Merge git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6: (32 commits)
ide-atapi: start dma in a drive-specific way
ide-atapi: put the rest of non-ide-cd code into the else-clause of ide_transfer_pc
ide-atapi: remove timeout arg to ide_issue_pc
ide-cd: remove handler wrappers
ide-cd: remove xferlen arg to cdrom_start_packet_command
ide-atapi: split drive-specific functionality in ide_issue_pc
ide-atapi: assign expiry and timeout based on device type
ide-atapi: compute cmd_len based on device type in ide_transfer_pc
ide: remove the last ide-scsi remnants
ide-atapi: remove ide-scsi remnants from ide_pc_intr()
ide-atapi: remove ide-scsi remnants from ide_transfer_pc()
ide-atapi: remove ide-scsi remnants from ide_issue_pc
ide-cd: move cdrom_timer_expiry to ide-atapi.c
ide-atapi: teach ide atapi about drive->waiting_for_dma
ide-atapi: accomodate transfer length calculation for ide-cd
ide-atapi: setup dma for ide-cd
ide-atapi: combine drive-specific assignments
ide-atapi: add a dev_is_idecd-inline
remove ide-scsi
ide-floppy: allocate only toplevel packet commands
...
diff --git a/Documentation/ABI/testing/sysfs-class-uwb_rc b/Documentation/ABI/testing/sysfs-class-uwb_rc
index a0d18db..6a5fd07 100644
--- a/Documentation/ABI/testing/sysfs-class-uwb_rc
+++ b/Documentation/ABI/testing/sysfs-class-uwb_rc
@@ -32,14 +32,16 @@
Description:
Write:
- <channel> [<bpst offset>]
+ <channel>
- to start beaconing on a specific channel, or stop
- beaconing if <channel> is -1. Valid channels depends
- on the radio controller's supported band groups.
+ to force a specific channel to be used when beaconing,
+ or, if <channel> is -1, to prohibit beaconing. If
+ <channel> is 0, then the default channel selection
+ algorithm will be used. Valid channels depends on the
+ radio controller's supported band groups.
- <bpst offset> may be used to try and join a specific
- beacon group if more than one was found during a scan.
+ Reading returns the currently active channel, or -1 if
+ the radio controller is not beaconing.
What: /sys/class/uwb_rc/uwbN/scan
Date: July 2008
diff --git a/Documentation/filesystems/devpts.txt b/Documentation/filesystems/devpts.txt
new file mode 100644
index 0000000..68dffd8
--- /dev/null
+++ b/Documentation/filesystems/devpts.txt
@@ -0,0 +1,132 @@
+
+To support containers, we now allow multiple instances of devpts filesystem,
+such that indices of ptys allocated in one instance are independent of indices
+allocated in other instances of devpts.
+
+To preserve backward compatibility, this support for multiple instances is
+enabled only if:
+
+ - CONFIG_DEVPTS_MULTIPLE_INSTANCES=y, and
+ - '-o newinstance' mount option is specified while mounting devpts
+
+IOW, devpts now supports both single-instance and multi-instance semantics.
+
+If CONFIG_DEVPTS_MULTIPLE_INSTANCES=n, there is no change in behavior and
+this referred to as the "legacy" mode. In this mode, the new mount options
+(-o newinstance and -o ptmxmode) will be ignored with a 'bogus option' message
+on console.
+
+If CONFIG_DEVPTS_MULTIPLE_INSTANCES=y and devpts is mounted without the
+'newinstance' option (as in current start-up scripts) the new mount binds
+to the initial kernel mount of devpts. This mode is referred to as the
+'single-instance' mode and the current, single-instance semantics are
+preserved, i.e PTYs are common across the system.
+
+The only difference between this single-instance mode and the legacy mode
+is the presence of new, '/dev/pts/ptmx' node with permissions 0000, which
+can safely be ignored.
+
+If CONFIG_DEVPTS_MULTIPLE_INSTANCES=y and 'newinstance' option is specified,
+the mount is considered to be in the multi-instance mode and a new instance
+of the devpts fs is created. Any ptys created in this instance are independent
+of ptys in other instances of devpts. Like in the single-instance mode, the
+/dev/pts/ptmx node is present. To effectively use the multi-instance mode,
+open of /dev/ptmx must be a redirected to '/dev/pts/ptmx' using a symlink or
+bind-mount.
+
+Eg: A container startup script could do the following:
+
+ $ chmod 0666 /dev/pts/ptmx
+ $ rm /dev/ptmx
+ $ ln -s pts/ptmx /dev/ptmx
+ $ ns_exec -cm /bin/bash
+
+ # We are now in new container
+
+ $ umount /dev/pts
+ $ mount -t devpts -o newinstance lxcpts /dev/pts
+ $ sshd -p 1234
+
+where 'ns_exec -cm /bin/bash' calls clone() with CLONE_NEWNS flag and execs
+/bin/bash in the child process. A pty created by the sshd is not visible in
+the original mount of /dev/pts.
+
+User-space changes
+------------------
+
+In multi-instance mode (i.e '-o newinstance' mount option is specified at least
+once), following user-space issues should be noted.
+
+1. If -o newinstance mount option is never used, /dev/pts/ptmx can be ignored
+ and no change is needed to system-startup scripts.
+
+2. To effectively use multi-instance mode (i.e -o newinstance is specified)
+ administrators or startup scripts should "redirect" open of /dev/ptmx to
+ /dev/pts/ptmx using either a bind mount or symlink.
+
+ $ mount -t devpts -o newinstance devpts /dev/pts
+
+ followed by either
+
+ $ rm /dev/ptmx
+ $ ln -s pts/ptmx /dev/ptmx
+ $ chmod 666 /dev/pts/ptmx
+ or
+ $ mount -o bind /dev/pts/ptmx /dev/ptmx
+
+3. The '/dev/ptmx -> pts/ptmx' symlink is the preferred method since it
+ enables better error-reporting and treats both single-instance and
+ multi-instance mounts similarly.
+
+ But this method requires that system-startup scripts set the mode of
+ /dev/pts/ptmx correctly (default mode is 0000). The scripts can set the
+ mode by, either
+
+ - adding ptmxmode mount option to devpts entry in /etc/fstab, or
+ - using 'chmod 0666 /dev/pts/ptmx'
+
+4. If multi-instance mode mount is needed for containers, but the system
+ startup scripts have not yet been updated, container-startup scripts
+ should bind mount /dev/ptmx to /dev/pts/ptmx to avoid breaking single-
+ instance mounts.
+
+ Or, in general, container-startup scripts should use:
+
+ mount -t devpts -o newinstance -o ptmxmode=0666 devpts /dev/pts
+ if [ ! -L /dev/ptmx ]; then
+ mount -o bind /dev/pts/ptmx /dev/ptmx
+ fi
+
+ When all devpts mounts are multi-instance, /dev/ptmx can permanently be
+ a symlink to pts/ptmx and the bind mount can be ignored.
+
+5. A multi-instance mount that is not accompanied by the /dev/ptmx to
+ /dev/pts/ptmx redirection would result in an unusable/unreachable pty.
+
+ mount -t devpts -o newinstance lxcpts /dev/pts
+
+ immediately followed by:
+
+ open("/dev/ptmx")
+
+ would create a pty, say /dev/pts/7, in the initial kernel mount.
+ But /dev/pts/7 would be invisible in the new mount.
+
+6. The permissions for /dev/pts/ptmx node should be specified when mounting
+ /dev/pts, using the '-o ptmxmode=%o' mount option (default is 0000).
+
+ mount -t devpts -o newinstance -o ptmxmode=0644 devpts /dev/pts
+
+ The permissions can be later be changed as usual with 'chmod'.
+
+ chmod 666 /dev/pts/ptmx
+
+7. A mount of devpts without the 'newinstance' option results in binding to
+ initial kernel mount. This behavior while preserving legacy semantics,
+ does not provide strict isolation in a container environment. i.e by
+ mounting devpts without the 'newinstance' option, a container could
+ get visibility into the 'host' or root container's devpts.
+
+ To workaround this and have strict isolation, all mounts of devpts,
+ including the mount in the root container, should use the newinstance
+ option.
diff --git a/Documentation/usb/wusb-cbaf b/Documentation/usb/wusb-cbaf
index 2e78b70..426ddaa 100644
--- a/Documentation/usb/wusb-cbaf
+++ b/Documentation/usb/wusb-cbaf
@@ -80,12 +80,6 @@
start)
for dev in ${2:-$hdevs}
do
- uwb_rc=$(readlink -f $dev/uwb_rc)
- if cat $uwb_rc/beacon | grep -q -- "-1"
- then
- echo 13 0 > $uwb_rc/beacon
- echo I: started beaconing on ch 13 on $(basename $uwb_rc) >&2
- fi
echo $host_CHID > $dev/wusb_chid
echo I: started host $(basename $dev) >&2
done
@@ -95,9 +89,6 @@
do
echo 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > $dev/wusb_chid
echo I: stopped host $(basename $dev) >&2
- uwb_rc=$(readlink -f $dev/uwb_rc)
- echo -1 | cat > $uwb_rc/beacon
- echo I: stopped beaconing on $(basename $uwb_rc) >&2
done
;;
set-chid)
diff --git a/MAINTAINERS b/MAINTAINERS
index 144766c..88f43e0 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2049,6 +2049,12 @@
W: http://artax.karlin.mff.cuni.cz/~mikulas/vyplody/hpfs/index-e.cgi
S: Maintained
+HSO 3G Modem Driver (hso.c)
+P: Denis Joseph Barrow
+M: d.barow@option.com
+W: http://www.pharscape.org
+S: Maintained
+
HTCPEN TOUCHSCREEN DRIVER
P: Pau Oliva Fora
M: pof@eslack.org
@@ -2630,13 +2636,13 @@
S: Maintained
LINUX FOR POWERPC (32-BIT AND 64-BIT)
-P: Paul Mackerras
-M: paulus@samba.org
P: Benjamin Herrenschmidt
M: benh@kernel.crashing.org
+P: Paul Mackerras
+M: paulus@samba.org
W: http://www.penguinppc.org/
L: linuxppc-dev@ozlabs.org
-T: git kernel.org:/pub/scm/linux/kernel/git/paulus/powerpc.git
+T: git kernel.org:/pub/scm/linux/kernel/git/benh/powerpc.git
S: Supported
LINUX FOR POWER MACINTOSH
diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c
index 8655b5b..f99a6c6 100644
--- a/arch/x86/mm/init_32.c
+++ b/arch/x86/mm/init_32.c
@@ -435,8 +435,12 @@
#endif /* !CONFIG_NUMA */
#else
-# define permanent_kmaps_init(pgd_base) do { } while (0)
-# define set_highmem_pages_init() do { } while (0)
+static inline void permanent_kmaps_init(pgd_t *pgd_base)
+{
+}
+static inline void set_highmem_pages_init(void)
+{
+}
#endif /* CONFIG_HIGHMEM */
void __init native_pagetable_setup_start(pgd_t *base)
diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig
index c602b54..1697043 100644
--- a/drivers/char/Kconfig
+++ b/drivers/char/Kconfig
@@ -190,7 +190,7 @@
config ESPSERIAL
tristate "Hayes ESP serial port support"
- depends on SERIAL_NONSTANDARD && ISA && ISA_DMA_API
+ depends on SERIAL_NONSTANDARD && ISA && ISA_DMA_API && BROKEN
help
This is a driver which supports Hayes ESP serial ports. Both single
port cards and multiport cards are supported. Make sure to read
@@ -443,6 +443,17 @@
All modern Linux systems use the Unix98 ptys. Say Y unless
you're on an embedded system and want to conserve memory.
+config DEVPTS_MULTIPLE_INSTANCES
+ bool "Support multiple instances of devpts"
+ depends on UNIX98_PTYS
+ default n
+ ---help---
+ Enable support for multiple instances of devpts filesystem.
+ If you want to have isolated PTY namespaces (eg: in containers),
+ say Y here. Otherwise, say N. If enabled, each mount of devpts
+ filesystem with the '-o newinstance' option will create an
+ independent PTY namespace.
+
config LEGACY_PTYS
bool "Legacy (BSD) PTY support"
default y
diff --git a/drivers/char/amiserial.c b/drivers/char/amiserial.c
index b97aebd..4e0cfde 100644
--- a/drivers/char/amiserial.c
+++ b/drivers/char/amiserial.c
@@ -170,7 +170,7 @@
*/
static void rs_stop(struct tty_struct *tty)
{
- struct async_struct *info = (struct async_struct *)tty->driver_data;
+ struct async_struct *info = tty->driver_data;
unsigned long flags;
if (serial_paranoia_check(info, tty->name, "rs_stop"))
@@ -190,7 +190,7 @@
static void rs_start(struct tty_struct *tty)
{
- struct async_struct *info = (struct async_struct *)tty->driver_data;
+ struct async_struct *info = tty->driver_data;
unsigned long flags;
if (serial_paranoia_check(info, tty->name, "rs_start"))
@@ -861,7 +861,7 @@
static void rs_flush_chars(struct tty_struct *tty)
{
- struct async_struct *info = (struct async_struct *)tty->driver_data;
+ struct async_struct *info = tty->driver_data;
unsigned long flags;
if (serial_paranoia_check(info, tty->name, "rs_flush_chars"))
@@ -934,7 +934,7 @@
static int rs_write_room(struct tty_struct *tty)
{
- struct async_struct *info = (struct async_struct *)tty->driver_data;
+ struct async_struct *info = tty->driver_data;
if (serial_paranoia_check(info, tty->name, "rs_write_room"))
return 0;
@@ -943,7 +943,7 @@
static int rs_chars_in_buffer(struct tty_struct *tty)
{
- struct async_struct *info = (struct async_struct *)tty->driver_data;
+ struct async_struct *info = tty->driver_data;
if (serial_paranoia_check(info, tty->name, "rs_chars_in_buffer"))
return 0;
@@ -952,7 +952,7 @@
static void rs_flush_buffer(struct tty_struct *tty)
{
- struct async_struct *info = (struct async_struct *)tty->driver_data;
+ struct async_struct *info = tty->driver_data;
unsigned long flags;
if (serial_paranoia_check(info, tty->name, "rs_flush_buffer"))
@@ -969,7 +969,7 @@
*/
static void rs_send_xchar(struct tty_struct *tty, char ch)
{
- struct async_struct *info = (struct async_struct *)tty->driver_data;
+ struct async_struct *info = tty->driver_data;
unsigned long flags;
if (serial_paranoia_check(info, tty->name, "rs_send_char"))
@@ -1004,7 +1004,7 @@
*/
static void rs_throttle(struct tty_struct * tty)
{
- struct async_struct *info = (struct async_struct *)tty->driver_data;
+ struct async_struct *info = tty->driver_data;
unsigned long flags;
#ifdef SERIAL_DEBUG_THROTTLE
char buf[64];
@@ -1029,7 +1029,7 @@
static void rs_unthrottle(struct tty_struct * tty)
{
- struct async_struct *info = (struct async_struct *)tty->driver_data;
+ struct async_struct *info = tty->driver_data;
unsigned long flags;
#ifdef SERIAL_DEBUG_THROTTLE
char buf[64];
@@ -1194,7 +1194,7 @@
static int rs_tiocmget(struct tty_struct *tty, struct file *file)
{
- struct async_struct * info = (struct async_struct *)tty->driver_data;
+ struct async_struct * info = tty->driver_data;
unsigned char control, status;
unsigned long flags;
@@ -1217,7 +1217,7 @@
static int rs_tiocmset(struct tty_struct *tty, struct file *file,
unsigned int set, unsigned int clear)
{
- struct async_struct * info = (struct async_struct *)tty->driver_data;
+ struct async_struct * info = tty->driver_data;
unsigned long flags;
if (serial_paranoia_check(info, tty->name, "rs_ioctl"))
@@ -1244,7 +1244,7 @@
*/
static int rs_break(struct tty_struct *tty, int break_state)
{
- struct async_struct * info = (struct async_struct *)tty->driver_data;
+ struct async_struct * info = tty->driver_data;
unsigned long flags;
if (serial_paranoia_check(info, tty->name, "rs_break"))
@@ -1264,7 +1264,7 @@
static int rs_ioctl(struct tty_struct *tty, struct file * file,
unsigned int cmd, unsigned long arg)
{
- struct async_struct * info = (struct async_struct *)tty->driver_data;
+ struct async_struct * info = tty->driver_data;
struct async_icount cprev, cnow; /* kernel counter temps */
struct serial_icounter_struct icount;
void __user *argp = (void __user *)arg;
@@ -1368,7 +1368,7 @@
static void rs_set_termios(struct tty_struct *tty, struct ktermios *old_termios)
{
- struct async_struct *info = (struct async_struct *)tty->driver_data;
+ struct async_struct *info = tty->driver_data;
unsigned long flags;
unsigned int cflag = tty->termios->c_cflag;
@@ -1428,7 +1428,7 @@
*/
static void rs_close(struct tty_struct *tty, struct file * filp)
{
- struct async_struct * info = (struct async_struct *)tty->driver_data;
+ struct async_struct * info = tty->driver_data;
struct serial_state *state;
unsigned long flags;
@@ -1523,7 +1523,7 @@
*/
static void rs_wait_until_sent(struct tty_struct *tty, int timeout)
{
- struct async_struct * info = (struct async_struct *)tty->driver_data;
+ struct async_struct * info = tty->driver_data;
unsigned long orig_jiffies, char_time;
int lsr;
@@ -1587,7 +1587,7 @@
*/
static void rs_hangup(struct tty_struct *tty)
{
- struct async_struct * info = (struct async_struct *)tty->driver_data;
+ struct async_struct * info = tty->driver_data;
struct serial_state *state = info->state;
if (serial_paranoia_check(info, tty->name, "rs_hangup"))
diff --git a/drivers/char/cyclades.c b/drivers/char/cyclades.c
index 5e5b1dc..6a59f72 100644
--- a/drivers/char/cyclades.c
+++ b/drivers/char/cyclades.c
@@ -5010,7 +5010,7 @@
if (nchan == 0) {
dev_err(&pdev->dev, "Cyclom-Y PCI host card with no "
"Serial-Modules\n");
- return -EIO;
+ goto err_unmap;
}
} else if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Hi) {
struct RUNTIME_9060 __iomem *ctl_addr;
diff --git a/drivers/char/epca.c b/drivers/char/epca.c
index cf2461d..39ad820 100644
--- a/drivers/char/epca.c
+++ b/drivers/char/epca.c
@@ -69,7 +69,9 @@
/*
* The ISA boards do window flipping into the same spaces so its only sane with
- * a single lock. It's still pretty efficient.
+ * a single lock. It's still pretty efficient. This lock guards the hardware
+ * and the tty_port lock guards the kernel side stuff like use counts. Take
+ * this lock inside the port lock if you must take both.
*/
static DEFINE_SPINLOCK(epca_lock);
@@ -156,14 +158,12 @@
static void pc_sched_event(struct channel *, int);
static void epca_error(int, char *);
static void pc_close(struct tty_struct *, struct file *);
-static void shutdown(struct channel *);
+static void shutdown(struct channel *, struct tty_struct *tty);
static void pc_hangup(struct tty_struct *);
static int pc_write_room(struct tty_struct *);
static int pc_chars_in_buffer(struct tty_struct *);
static void pc_flush_buffer(struct tty_struct *);
static void pc_flush_chars(struct tty_struct *);
-static int block_til_ready(struct tty_struct *, struct file *,
- struct channel *);
static int pc_open(struct tty_struct *, struct file *);
static void post_fep_init(unsigned int crd);
static void epcapoll(unsigned long);
@@ -173,7 +173,7 @@
static unsigned termios2digi_i(struct channel *ch, unsigned);
static unsigned termios2digi_c(struct channel *ch, unsigned);
static void epcaparam(struct tty_struct *, struct channel *);
-static void receive_data(struct channel *);
+static void receive_data(struct channel *, struct tty_struct *tty);
static int pc_ioctl(struct tty_struct *, struct file *,
unsigned int, unsigned long);
static int info_ioctl(struct tty_struct *, struct file *,
@@ -392,7 +392,7 @@
* through tty->driver_data this should catch it.
*/
if (tty) {
- struct channel *ch = (struct channel *)tty->driver_data;
+ struct channel *ch = tty->driver_data;
if (ch >= &digi_channels[0] && ch < &digi_channels[nbdevs]) {
if (ch->magic == EPCA_MAGIC)
return ch;
@@ -419,76 +419,34 @@
static void pc_close(struct tty_struct *tty, struct file *filp)
{
struct channel *ch;
- unsigned long flags;
+ struct tty_port *port;
/*
* verifyChannel returns the channel from the tty struct if it is
* valid. This serves as a sanity check.
*/
ch = verifyChannel(tty);
- if (ch != NULL) {
- spin_lock_irqsave(&epca_lock, flags);
- if (tty_hung_up_p(filp)) {
- spin_unlock_irqrestore(&epca_lock, flags);
- return;
- }
- if (ch->port.count-- > 1) {
- /* Begin channel is open more than once */
- /*
- * Return without doing anything. Someone might still
- * be using the channel.
- */
- spin_unlock_irqrestore(&epca_lock, flags);
- return;
- }
- /* Port open only once go ahead with shutdown & reset */
- BUG_ON(ch->port.count < 0);
+ if (ch == NULL)
+ return;
+ port = &ch->port;
- /*
- * Let the rest of the driver know the channel is being closed.
- * This becomes important if an open is attempted before close
- * is finished.
- */
- ch->port.flags |= ASYNC_CLOSING;
- tty->closing = 1;
+ if (tty_port_close_start(port, tty, filp) == 0)
+ return;
- spin_unlock_irqrestore(&epca_lock, flags);
+ pc_flush_buffer(tty);
+ shutdown(ch, tty);
- if (ch->port.flags & ASYNC_INITIALIZED) {
- /* Setup an event to indicate when the
- transmit buffer empties */
- setup_empty_event(tty, ch);
- /* 30 seconds timeout */
- tty_wait_until_sent(tty, 3000);
- }
- pc_flush_buffer(tty);
-
- tty_ldisc_flush(tty);
- shutdown(ch);
-
- spin_lock_irqsave(&epca_lock, flags);
- tty->closing = 0;
- ch->event = 0;
- ch->port.tty = NULL;
- spin_unlock_irqrestore(&epca_lock, flags);
-
- if (ch->port.blocked_open) {
- if (ch->close_delay)
- msleep_interruptible(jiffies_to_msecs(ch->close_delay));
- wake_up_interruptible(&ch->port.open_wait);
- }
- ch->port.flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_INITIALIZED |
- ASYNC_CLOSING);
- wake_up_interruptible(&ch->port.close_wait);
- }
+ tty_port_close_end(port, tty);
+ ch->event = 0; /* FIXME: review ch->event locking */
+ tty_port_tty_set(port, NULL);
}
-static void shutdown(struct channel *ch)
+static void shutdown(struct channel *ch, struct tty_struct *tty)
{
unsigned long flags;
- struct tty_struct *tty;
struct board_chan __iomem *bc;
+ struct tty_port *port = &ch->port;
- if (!(ch->port.flags & ASYNC_INITIALIZED))
+ if (!(port->flags & ASYNC_INITIALIZED))
return;
spin_lock_irqsave(&epca_lock, flags);
@@ -503,7 +461,6 @@
*/
if (bc)
writeb(0, &bc->idata);
- tty = ch->port.tty;
/* If we're a modem control device and HUPCL is on, drop RTS & DTR. */
if (tty->termios->c_cflag & HUPCL) {
@@ -517,32 +474,26 @@
* will have to reinitialized. Set a flag to indicate this.
*/
/* Prevent future Digi programmed interrupts from coming active */
- ch->port.flags &= ~ASYNC_INITIALIZED;
+ port->flags &= ~ASYNC_INITIALIZED;
spin_unlock_irqrestore(&epca_lock, flags);
}
static void pc_hangup(struct tty_struct *tty)
{
struct channel *ch;
+
/*
* verifyChannel returns the channel from the tty struct if it is
* valid. This serves as a sanity check.
*/
ch = verifyChannel(tty);
if (ch != NULL) {
- unsigned long flags;
-
pc_flush_buffer(tty);
tty_ldisc_flush(tty);
- shutdown(ch);
+ shutdown(ch, tty);
- spin_lock_irqsave(&epca_lock, flags);
- ch->port.tty = NULL;
- ch->event = 0;
- ch->port.count = 0;
- ch->port.flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_INITIALIZED);
- spin_unlock_irqrestore(&epca_lock, flags);
- wake_up_interruptible(&ch->port.open_wait);
+ ch->event = 0; /* FIXME: review locking of ch->event */
+ tty_port_hangup(&ch->port);
}
}
@@ -786,100 +737,22 @@
}
}
-static int block_til_ready(struct tty_struct *tty,
- struct file *filp, struct channel *ch)
+static int epca_carrier_raised(struct tty_port *port)
{
- DECLARE_WAITQUEUE(wait, current);
- int retval, do_clocal = 0;
- unsigned long flags;
-
- if (tty_hung_up_p(filp)) {
- if (ch->port.flags & ASYNC_HUP_NOTIFY)
- retval = -EAGAIN;
- else
- retval = -ERESTARTSYS;
- return retval;
- }
-
- /*
- * If the device is in the middle of being closed, then block until
- * it's done, and then try again.
- */
- if (ch->port.flags & ASYNC_CLOSING) {
- interruptible_sleep_on(&ch->port.close_wait);
-
- if (ch->port.flags & ASYNC_HUP_NOTIFY)
- return -EAGAIN;
- else
- return -ERESTARTSYS;
- }
-
- if (filp->f_flags & O_NONBLOCK) {
- /*
- * If non-blocking mode is set, then make the check up front
- * and then exit.
- */
- ch->port.flags |= ASYNC_NORMAL_ACTIVE;
- return 0;
- }
- if (tty->termios->c_cflag & CLOCAL)
- do_clocal = 1;
- /* Block waiting for the carrier detect and the line to become free */
-
- retval = 0;
- add_wait_queue(&ch->port.open_wait, &wait);
-
- spin_lock_irqsave(&epca_lock, flags);
- /* We dec count so that pc_close will know when to free things */
- if (!tty_hung_up_p(filp))
- ch->port.count--;
- ch->port.blocked_open++;
- while (1) {
- set_current_state(TASK_INTERRUPTIBLE);
- if (tty_hung_up_p(filp) ||
- !(ch->port.flags & ASYNC_INITIALIZED)) {
- if (ch->port.flags & ASYNC_HUP_NOTIFY)
- retval = -EAGAIN;
- else
- retval = -ERESTARTSYS;
- break;
- }
- if (!(ch->port.flags & ASYNC_CLOSING) &&
- (do_clocal || (ch->imodem & ch->dcd)))
- break;
- if (signal_pending(current)) {
- retval = -ERESTARTSYS;
- break;
- }
- spin_unlock_irqrestore(&epca_lock, flags);
- /*
- * Allow someone else to be scheduled. We will occasionally go
- * through this loop until one of the above conditions change.
- * The below schedule call will allow other processes to enter
- * and prevent this loop from hogging the cpu.
- */
- schedule();
- spin_lock_irqsave(&epca_lock, flags);
- }
-
- __set_current_state(TASK_RUNNING);
- remove_wait_queue(&ch->port.open_wait, &wait);
- if (!tty_hung_up_p(filp))
- ch->port.count++;
- ch->port.blocked_open--;
-
- spin_unlock_irqrestore(&epca_lock, flags);
-
- if (retval)
- return retval;
-
- ch->port.flags |= ASYNC_NORMAL_ACTIVE;
+ struct channel *ch = container_of(port, struct channel, port);
+ if (ch->imodem & ch->dcd)
+ return 1;
return 0;
}
+static void epca_raise_dtr_rts(struct tty_port *port)
+{
+}
+
static int pc_open(struct tty_struct *tty, struct file *filp)
{
struct channel *ch;
+ struct tty_port *port;
unsigned long flags;
int line, retval, boardnum;
struct board_chan __iomem *bc;
@@ -890,6 +763,7 @@
return -ENODEV;
ch = &digi_channels[line];
+ port = &ch->port;
boardnum = ch->boardnum;
/* Check status of board configured in system. */
@@ -926,22 +800,24 @@
return -ENODEV;
}
- spin_lock_irqsave(&epca_lock, flags);
+ spin_lock_irqsave(&port->lock, flags);
/*
* Every time a channel is opened, increment a counter. This is
* necessary because we do not wish to flush and shutdown the channel
* until the last app holding the channel open, closes it.
*/
- ch->port.count++;
+ port->count++;
/*
* Set a kernel structures pointer to our local channel structure. This
* way we can get to it when passed only a tty struct.
*/
tty->driver_data = ch;
+ port->tty = tty;
/*
* If this is the first time the channel has been opened, initialize
* the tty->termios struct otherwise let pc_close handle it.
*/
+ spin_lock(&epca_lock);
globalwinon(ch);
ch->statusflags = 0;
@@ -956,31 +832,33 @@
writew(head, &bc->rout);
/* Set the channels associated tty structure */
- ch->port.tty = tty;
/*
* The below routine generally sets up parity, baud, flow control
* issues, etc.... It effect both control flags and input flags.
*/
epcaparam(tty, ch);
- ch->port.flags |= ASYNC_INITIALIZED;
memoff(ch);
- spin_unlock_irqrestore(&epca_lock, flags);
+ spin_unlock(&epca_lock);
+ port->flags |= ASYNC_INITIALIZED;
+ spin_unlock_irqrestore(&port->lock, flags);
- retval = block_til_ready(tty, filp, ch);
+ retval = tty_port_block_til_ready(port, tty, filp);
if (retval)
return retval;
/*
* Set this again in case a hangup set it to zero while this open() was
* waiting for the line...
*/
- spin_lock_irqsave(&epca_lock, flags);
- ch->port.tty = tty;
+ spin_lock_irqsave(&port->lock, flags);
+ port->tty = tty;
+ spin_lock(&epca_lock);
globalwinon(ch);
/* Enable Digi Data events */
writeb(1, &bc->idata);
memoff(ch);
- spin_unlock_irqrestore(&epca_lock, flags);
+ spin_unlock(&epca_lock);
+ spin_unlock_irqrestore(&port->lock, flags);
return 0;
}
@@ -1016,8 +894,11 @@
}
ch = card_ptr[crd];
for (count = 0; count < bd->numports; count++, ch++) {
- if (ch && ch->port.tty)
- tty_hangup(ch->port.tty);
+ struct tty_struct *tty = tty_port_tty_get(&ch->port);
+ if (tty) {
+ tty_hangup(tty);
+ tty_kref_put(tty);
+ }
}
}
pci_unregister_driver(&epca_driver);
@@ -1042,6 +923,11 @@
.break_ctl = pc_send_break
};
+static const struct tty_port_operations epca_port_ops = {
+ .carrier_raised = epca_carrier_raised,
+ .raise_dtr_rts = epca_raise_dtr_rts,
+};
+
static int info_open(struct tty_struct *tty, struct file *filp)
{
return 0;
@@ -1377,6 +1263,7 @@
u16 tseg, rseg;
tty_port_init(&ch->port);
+ ch->port.ops = &epca_port_ops;
ch->brdchan = bc;
ch->mailbox = gd;
INIT_WORK(&ch->tqueue, do_softint);
@@ -1428,7 +1315,7 @@
ch->boardnum = crd;
ch->channelnum = i;
ch->magic = EPCA_MAGIC;
- ch->port.tty = NULL;
+ tty_port_tty_set(&ch->port, NULL);
if (shrinkmem) {
fepcmd(ch, SETBUFFER, 32, 0, 0, 0);
@@ -1510,7 +1397,7 @@
ch->fepstartca = 0;
ch->fepstopca = 0;
- ch->close_delay = 50;
+ ch->port.close_delay = 50;
spin_unlock_irqrestore(&epca_lock, flags);
}
@@ -1622,15 +1509,16 @@
if (bc == NULL)
goto next;
+ tty = tty_port_tty_get(&ch->port);
if (event & DATA_IND) { /* Begin DATA_IND */
- receive_data(ch);
+ receive_data(ch, tty);
assertgwinon(ch);
} /* End DATA_IND */
/* else *//* Fix for DCD transition missed bug */
if (event & MODEMCHG_IND) {
/* A modem signal change has been indicated */
ch->imodem = mstat;
- if (ch->port.flags & ASYNC_CHECK_CD) {
+ if (test_bit(ASYNC_CHECK_CD, &ch->port.flags)) {
/* We are now receiving dcd */
if (mstat & ch->dcd)
wake_up_interruptible(&ch->port.open_wait);
@@ -1638,7 +1526,6 @@
pc_sched_event(ch, EPCA_EVENT_HANGUP);
}
}
- tty = ch->port.tty;
if (tty) {
if (event & BREAK_IND) {
/* A break has been indicated */
@@ -1658,6 +1545,7 @@
tty_wakeup(tty);
}
}
+ tty_kref_put(tty);
}
next:
globalwinon(ch);
@@ -1877,9 +1765,9 @@
* that the driver will wait on carrier detect.
*/
if (ts->c_cflag & CLOCAL)
- ch->port.flags &= ~ASYNC_CHECK_CD;
+ clear_bit(ASYNC_CHECK_CD, &ch->port.flags);
else
- ch->port.flags |= ASYNC_CHECK_CD;
+ set_bit(ASYNC_CHECK_CD, &ch->port.flags);
mval = ch->m_dtr | ch->m_rts;
} /* End CBAUD not detected */
iflag = termios2digi_i(ch, ts->c_iflag);
@@ -1952,11 +1840,10 @@
}
/* Caller holds lock */
-static void receive_data(struct channel *ch)
+static void receive_data(struct channel *ch, struct tty_struct *tty)
{
unchar *rptr;
struct ktermios *ts = NULL;
- struct tty_struct *tty;
struct board_chan __iomem *bc;
int dataToRead, wrapgap, bytesAvailable;
unsigned int tail, head;
@@ -1969,7 +1856,6 @@
globalwinon(ch);
if (ch->statusflags & RXSTOPPED)
return;
- tty = ch->port.tty;
if (tty)
ts = tty->termios;
bc = ch->brdchan;
@@ -2029,7 +1915,7 @@
globalwinon(ch);
writew(tail, &bc->rout);
/* Must be called with global data */
- tty_schedule_flip(ch->port.tty);
+ tty_schedule_flip(tty);
}
static int info_ioctl(struct tty_struct *tty, struct file *file,
@@ -2097,7 +1983,7 @@
static int pc_tiocmget(struct tty_struct *tty, struct file *file)
{
- struct channel *ch = (struct channel *) tty->driver_data;
+ struct channel *ch = tty->driver_data;
struct board_chan __iomem *bc;
unsigned int mstat, mflag = 0;
unsigned long flags;
@@ -2131,7 +2017,7 @@
static int pc_tiocmset(struct tty_struct *tty, struct file *file,
unsigned int set, unsigned int clear)
{
- struct channel *ch = (struct channel *) tty->driver_data;
+ struct channel *ch = tty->driver_data;
unsigned long flags;
if (!ch)
@@ -2178,7 +2064,7 @@
unsigned int mflag, mstat;
unsigned char startc, stopc;
struct board_chan __iomem *bc;
- struct channel *ch = (struct channel *) tty->driver_data;
+ struct channel *ch = tty->driver_data;
void __user *argp = (void __user *)arg;
if (ch)
@@ -2352,15 +2238,16 @@
struct channel *ch = container_of(work, struct channel, tqueue);
/* Called in response to a modem change event */
if (ch && ch->magic == EPCA_MAGIC) {
- struct tty_struct *tty = ch->port.tty;
+ struct tty_struct *tty = tty_port_tty_get(&ch->port);;
if (tty && tty->driver_data) {
if (test_and_clear_bit(EPCA_EVENT_HANGUP, &ch->event)) {
tty_hangup(tty);
wake_up_interruptible(&ch->port.open_wait);
- ch->port.flags &= ~ASYNC_NORMAL_ACTIVE;
+ clear_bit(ASYNC_NORMAL_ACTIVE, &ch->port.flags);
}
}
+ tty_kref_put(tty);
}
}
@@ -2473,7 +2360,7 @@
static int pc_send_break(struct tty_struct *tty, int msec)
{
- struct channel *ch = (struct channel *) tty->driver_data;
+ struct channel *ch = tty->driver_data;
unsigned long flags;
if (msec == -1)
diff --git a/drivers/char/esp.c b/drivers/char/esp.c
index 7f077c0..45ec263 100644
--- a/drivers/char/esp.c
+++ b/drivers/char/esp.c
@@ -2054,6 +2054,15 @@
wake_up_interruptible(&info->port.open_wait);
}
+static int esp_carrier_raised(struct tty_port *port)
+{
+ struct esp_struct *info = container_of(port, struct esp_struct, port);
+ serial_out(info, UART_ESI_CMD1, ESI_GET_UART_STAT);
+ if (serial_in(info, UART_ESI_STAT2) & UART_MSR_DCD)
+ return 1;
+ return 0;
+}
+
/*
* ------------------------------------------------------------
* esp_open() and friends
@@ -2066,17 +2075,19 @@
int retval;
int do_clocal = 0;
unsigned long flags;
+ int cd;
+ struct tty_port *port = &info->port;
/*
* If the device is in the middle of being closed, then block
* until it's done, and then try again.
*/
if (tty_hung_up_p(filp) ||
- (info->port.flags & ASYNC_CLOSING)) {
- if (info->port.flags & ASYNC_CLOSING)
- interruptible_sleep_on(&info->port.close_wait);
+ (port->flags & ASYNC_CLOSING)) {
+ if (port->flags & ASYNC_CLOSING)
+ interruptible_sleep_on(&port->close_wait);
#ifdef SERIAL_DO_RESTART
- if (info->port.flags & ASYNC_HUP_NOTIFY)
+ if (port->flags & ASYNC_HUP_NOTIFY)
return -EAGAIN;
else
return -ERESTARTSYS;
@@ -2091,7 +2102,7 @@
*/
if ((filp->f_flags & O_NONBLOCK) ||
(tty->flags & (1 << TTY_IO_ERROR))) {
- info->port.flags |= ASYNC_NORMAL_ACTIVE;
+ port->flags |= ASYNC_NORMAL_ACTIVE;
return 0;
}
@@ -2101,20 +2112,20 @@
/*
* Block waiting for the carrier detect and the line to become
* free (i.e., not in use by the callout). While we are in
- * this loop, info->port.count is dropped by one, so that
+ * this loop, port->count is dropped by one, so that
* rs_close() knows when to free things. We restore it upon
* exit, either normal or abnormal.
*/
retval = 0;
- add_wait_queue(&info->port.open_wait, &wait);
+ add_wait_queue(&port->open_wait, &wait);
#ifdef SERIAL_DEBUG_OPEN
printk(KERN_DEBUG "block_til_ready before block: ttys%d, count = %d\n",
- info->line, info->port.count);
+ info->line, port->count);
#endif
spin_lock_irqsave(&info->lock, flags);
if (!tty_hung_up_p(filp))
- info->port.count--;
- info->port.blocked_open++;
+ port->count--;
+ port->blocked_open++;
while (1) {
if ((tty->termios->c_cflag & CBAUD)) {
unsigned int scratch;
@@ -2129,9 +2140,9 @@
}
set_current_state(TASK_INTERRUPTIBLE);
if (tty_hung_up_p(filp) ||
- !(info->port.flags & ASYNC_INITIALIZED)) {
+ !(port->flags & ASYNC_INITIALIZED)) {
#ifdef SERIAL_DO_RESTART
- if (info->port.flags & ASYNC_HUP_NOTIFY)
+ if (port->flags & ASYNC_HUP_NOTIFY)
retval = -EAGAIN;
else
retval = -ERESTARTSYS;
@@ -2141,11 +2152,9 @@
break;
}
- serial_out(info, UART_ESI_CMD1, ESI_GET_UART_STAT);
- if (serial_in(info, UART_ESI_STAT2) & UART_MSR_DCD)
- do_clocal = 1;
+ cd = tty_port_carrier_raised(port);
- if (!(info->port.flags & ASYNC_CLOSING) &&
+ if (!(port->flags & ASYNC_CLOSING) &&
(do_clocal))
break;
if (signal_pending(current)) {
@@ -2154,25 +2163,25 @@
}
#ifdef SERIAL_DEBUG_OPEN
printk(KERN_DEBUG "block_til_ready blocking: ttys%d, count = %d\n",
- info->line, info->port.count);
+ info->line, port->count);
#endif
spin_unlock_irqrestore(&info->lock, flags);
schedule();
spin_lock_irqsave(&info->lock, flags);
}
set_current_state(TASK_RUNNING);
- remove_wait_queue(&info->port.open_wait, &wait);
+ remove_wait_queue(&port->open_wait, &wait);
if (!tty_hung_up_p(filp))
- info->port.count++;
- info->port.blocked_open--;
+ port->count++;
+ port->blocked_open--;
spin_unlock_irqrestore(&info->lock, flags);
#ifdef SERIAL_DEBUG_OPEN
printk(KERN_DEBUG "block_til_ready after blocking: ttys%d, count = %d\n",
- info->line, info->port.count);
+ info->line, port->count);
#endif
if (retval)
return retval;
- info->port.flags |= ASYNC_NORMAL_ACTIVE;
+ port->flags |= ASYNC_NORMAL_ACTIVE;
return 0;
}
@@ -2329,6 +2338,10 @@
.tiocmset = esp_tiocmset,
};
+static const struct tty_port_operations esp_port_ops = {
+ .esp_carrier_raised,
+};
+
/*
* The serial driver boot-time initialization code!
*/
@@ -2415,6 +2428,8 @@
offset = 0;
do {
+ tty_port_init(&info->port);
+ info->port.ops = &esp_port_ops;
info->io_port = esp[i] + offset;
info->irq = irq[i];
info->line = (i * 8) + (offset / 8);
@@ -2437,8 +2452,6 @@
info->config.flow_off = flow_off;
info->config.pio_threshold = pio_threshold;
info->next_port = ports;
- init_waitqueue_head(&info->port.open_wait);
- init_waitqueue_head(&info->port.close_wait);
init_waitqueue_head(&info->delta_msr_wait);
init_waitqueue_head(&info->break_wait);
ports = info;
diff --git a/drivers/char/generic_serial.c b/drivers/char/generic_serial.c
index c6090f8..9e4e569 100644
--- a/drivers/char/generic_serial.c
+++ b/drivers/char/generic_serial.c
@@ -376,7 +376,8 @@
void gs_hangup(struct tty_struct *tty)
{
- struct gs_port *port;
+ struct gs_port *port;
+ unsigned long flags;
func_enter ();
@@ -386,9 +387,11 @@
return;
gs_shutdown_port (port);
+ spin_lock_irqsave(&port->port.lock, flags);
port->port.flags &= ~(ASYNC_NORMAL_ACTIVE|GS_ACTIVE);
port->port.tty = NULL;
port->port.count = 0;
+ spin_unlock_irqrestore(&port->port.lock, flags);
wake_up_interruptible(&port->port.open_wait);
func_exit ();
@@ -397,7 +400,8 @@
int gs_block_til_ready(void *port_, struct file * filp)
{
- struct gs_port *port = port_;
+ struct gs_port *gp = port_;
+ struct tty_port *port = &gp->port;
DECLARE_WAITQUEUE(wait, current);
int retval;
int do_clocal = 0;
@@ -409,16 +413,16 @@
if (!port) return 0;
- tty = port->port.tty;
+ tty = port->tty;
gs_dprintk (GS_DEBUG_BTR, "Entering gs_block_till_ready.\n");
/*
* If the device is in the middle of being closed, then block
* until it's done, and then try again.
*/
- if (tty_hung_up_p(filp) || port->port.flags & ASYNC_CLOSING) {
- interruptible_sleep_on(&port->port.close_wait);
- if (port->port.flags & ASYNC_HUP_NOTIFY)
+ if (tty_hung_up_p(filp) || port->flags & ASYNC_CLOSING) {
+ interruptible_sleep_on(&port->close_wait);
+ if (port->flags & ASYNC_HUP_NOTIFY)
return -EAGAIN;
else
return -ERESTARTSYS;
@@ -432,7 +436,7 @@
*/
if ((filp->f_flags & O_NONBLOCK) ||
(tty->flags & (1 << TTY_IO_ERROR))) {
- port->port.flags |= ASYNC_NORMAL_ACTIVE;
+ port->flags |= ASYNC_NORMAL_ACTIVE;
return 0;
}
@@ -444,34 +448,34 @@
/*
* Block waiting for the carrier detect and the line to become
* free (i.e., not in use by the callout). While we are in
- * this loop, port->port.count is dropped by one, so that
+ * this loop, port->count is dropped by one, so that
* rs_close() knows when to free things. We restore it upon
* exit, either normal or abnormal.
*/
retval = 0;
- add_wait_queue(&port->port.open_wait, &wait);
+ add_wait_queue(&port->open_wait, &wait);
gs_dprintk (GS_DEBUG_BTR, "after add waitq.\n");
- spin_lock_irqsave(&port->driver_lock, flags);
+ spin_lock_irqsave(&port->lock, flags);
if (!tty_hung_up_p(filp)) {
- port->port.count--;
+ port->count--;
}
- spin_unlock_irqrestore(&port->driver_lock, flags);
- port->port.blocked_open++;
+ port->blocked_open++;
+ spin_unlock_irqrestore(&port->lock, flags);
while (1) {
- CD = port->rd->get_CD (port);
+ CD = tty_port_carrier_raised(port);
gs_dprintk (GS_DEBUG_BTR, "CD is now %d.\n", CD);
set_current_state (TASK_INTERRUPTIBLE);
if (tty_hung_up_p(filp) ||
- !(port->port.flags & ASYNC_INITIALIZED)) {
- if (port->port.flags & ASYNC_HUP_NOTIFY)
+ !(port->flags & ASYNC_INITIALIZED)) {
+ if (port->flags & ASYNC_HUP_NOTIFY)
retval = -EAGAIN;
else
retval = -ERESTARTSYS;
break;
}
- if (!(port->port.flags & ASYNC_CLOSING) &&
+ if (!(port->flags & ASYNC_CLOSING) &&
(do_clocal || CD))
break;
gs_dprintk (GS_DEBUG_BTR, "signal_pending is now: %d (%lx)\n",
@@ -483,19 +487,20 @@
schedule();
}
gs_dprintk (GS_DEBUG_BTR, "Got out of the loop. (%d)\n",
- port->port.blocked_open);
+ port->blocked_open);
set_current_state (TASK_RUNNING);
- remove_wait_queue(&port->port.open_wait, &wait);
+ remove_wait_queue(&port->open_wait, &wait);
+
+ spin_lock_irqsave(&port->lock, flags);
if (!tty_hung_up_p(filp)) {
- port->port.count++;
+ port->count++;
}
- port->port.blocked_open--;
- if (retval)
- return retval;
-
- port->port.flags |= ASYNC_NORMAL_ACTIVE;
+ port->blocked_open--;
+ if (retval == 0)
+ port->flags |= ASYNC_NORMAL_ACTIVE;
+ spin_unlock_irqrestore(&port->lock, flags);
func_exit ();
- return 0;
+ return retval;
}
@@ -506,7 +511,7 @@
func_enter ();
- port = (struct gs_port *) tty->driver_data;
+ port = tty->driver_data;
if (!port) return;
@@ -516,10 +521,10 @@
port->port.tty = tty;
}
- spin_lock_irqsave(&port->driver_lock, flags);
+ spin_lock_irqsave(&port->port.lock, flags);
if (tty_hung_up_p(filp)) {
- spin_unlock_irqrestore(&port->driver_lock, flags);
+ spin_unlock_irqrestore(&port->port.lock, flags);
if (port->rd->hungup)
port->rd->hungup (port);
func_exit ();
@@ -538,7 +543,7 @@
if (port->port.count) {
gs_dprintk(GS_DEBUG_CLOSE, "gs_close port %p: count: %d\n", port, port->port.count);
- spin_unlock_irqrestore(&port->driver_lock, flags);
+ spin_unlock_irqrestore(&port->port.lock, flags);
func_exit ();
return;
}
@@ -559,8 +564,10 @@
* line status register.
*/
+ spin_lock_irqsave(&port->driver_lock, flags);
port->rd->disable_rx_interrupts (port);
spin_unlock_irqrestore(&port->driver_lock, flags);
+ spin_unlock_irqrestore(&port->port.lock, flags);
/* close has no way of returning "EINTR", so discard return value */
if (port->closing_wait != ASYNC_CLOSING_WAIT_NONE)
@@ -573,20 +580,25 @@
tty_ldisc_flush(tty);
tty->closing = 0;
+ spin_lock_irqsave(&port->driver_lock, flags);
port->event = 0;
port->rd->close (port);
port->rd->shutdown_port (port);
+ spin_unlock_irqrestore(&port->driver_lock, flags);
+
+ spin_lock_irqsave(&port->port.lock, flags);
port->port.tty = NULL;
if (port->port.blocked_open) {
if (port->close_delay) {
- spin_unlock_irqrestore(&port->driver_lock, flags);
+ spin_unlock_irqrestore(&port->port.lock, flags);
msleep_interruptible(jiffies_to_msecs(port->close_delay));
- spin_lock_irqsave(&port->driver_lock, flags);
+ spin_lock_irqsave(&port->port.lock, flags);
}
wake_up_interruptible(&port->port.open_wait);
}
port->port.flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING | ASYNC_INITIALIZED);
+ spin_unlock_irqrestore(&port->port.lock, flags);
wake_up_interruptible(&port->port.close_wait);
func_exit ();
diff --git a/drivers/char/hvc_console.c b/drivers/char/hvc_console.c
index 0587b66..5a8a4c2 100644
--- a/drivers/char/hvc_console.c
+++ b/drivers/char/hvc_console.c
@@ -529,7 +529,7 @@
tty = tty_kref_get(hp->tty);
spin_unlock_irqrestore(&hp->lock, hvc_flags);
- tty_do_resize(tty, tty, &ws);
+ tty_do_resize(tty, &ws);
tty_kref_put(tty);
}
diff --git a/drivers/char/hvsi.c b/drivers/char/hvsi.c
index af05528..406f874 100644
--- a/drivers/char/hvsi.c
+++ b/drivers/char/hvsi.c
@@ -997,14 +997,14 @@
static int hvsi_write_room(struct tty_struct *tty)
{
- struct hvsi_struct *hp = (struct hvsi_struct *)tty->driver_data;
+ struct hvsi_struct *hp = tty->driver_data;
return N_OUTBUF - hp->n_outbuf;
}
static int hvsi_chars_in_buffer(struct tty_struct *tty)
{
- struct hvsi_struct *hp = (struct hvsi_struct *)tty->driver_data;
+ struct hvsi_struct *hp = tty->driver_data;
return hp->n_outbuf;
}
@@ -1070,7 +1070,7 @@
*/
static void hvsi_throttle(struct tty_struct *tty)
{
- struct hvsi_struct *hp = (struct hvsi_struct *)tty->driver_data;
+ struct hvsi_struct *hp = tty->driver_data;
pr_debug("%s\n", __func__);
@@ -1079,7 +1079,7 @@
static void hvsi_unthrottle(struct tty_struct *tty)
{
- struct hvsi_struct *hp = (struct hvsi_struct *)tty->driver_data;
+ struct hvsi_struct *hp = tty->driver_data;
unsigned long flags;
int shouldflip = 0;
@@ -1100,7 +1100,7 @@
static int hvsi_tiocmget(struct tty_struct *tty, struct file *file)
{
- struct hvsi_struct *hp = (struct hvsi_struct *)tty->driver_data;
+ struct hvsi_struct *hp = tty->driver_data;
hvsi_get_mctrl(hp);
return hp->mctrl;
@@ -1109,7 +1109,7 @@
static int hvsi_tiocmset(struct tty_struct *tty, struct file *file,
unsigned int set, unsigned int clear)
{
- struct hvsi_struct *hp = (struct hvsi_struct *)tty->driver_data;
+ struct hvsi_struct *hp = tty->driver_data;
unsigned long flags;
uint16_t new_mctrl;
diff --git a/drivers/char/i8k.c b/drivers/char/i8k.c
index b60d425..fc8cf7a 100644
--- a/drivers/char/i8k.c
+++ b/drivers/char/i8k.c
@@ -485,7 +485,21 @@
DMI_MATCH(DMI_PRODUCT_NAME, "MP061"),
},
},
- { }
+ {
+ .ident = "Dell Precision",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Precision"),
+ },
+ },
+ {
+ .ident = "Dell Vostro",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Vostro"),
+ },
+ },
+ { }
};
/*
diff --git a/drivers/char/isicom.c b/drivers/char/isicom.c
index 04e4549..24aa6e8 100644
--- a/drivers/char/isicom.c
+++ b/drivers/char/isicom.c
@@ -328,11 +328,13 @@
}
/* card->lock MUST NOT be held */
-static inline void raise_dtr_rts(struct isi_port *port)
+
+static void isicom_raise_dtr_rts(struct tty_port *port)
{
- struct isi_board *card = port->card;
+ struct isi_port *ip = container_of(port, struct isi_port, port);
+ struct isi_board *card = ip->card;
unsigned long base = card->base;
- u16 channel = port->channel;
+ u16 channel = ip->channel;
if (!lock_card(card))
return;
@@ -340,7 +342,7 @@
outw(0x8000 | (channel << card->shift_count) | 0x02, base);
outw(0x0f04, base);
InterruptTheCard(base);
- port->status |= (ISI_DTR | ISI_RTS);
+ ip->status |= (ISI_DTR | ISI_RTS);
unlock_card(card);
}
@@ -830,80 +832,10 @@
return 0;
}
-static int block_til_ready(struct tty_struct *tty, struct file *filp,
- struct isi_port *port)
+static int isicom_carrier_raised(struct tty_port *port)
{
- struct isi_board *card = port->card;
- int do_clocal = 0, retval;
- unsigned long flags;
- DECLARE_WAITQUEUE(wait, current);
-
- /* block if port is in the process of being closed */
-
- if (tty_hung_up_p(filp) || port->port.flags & ASYNC_CLOSING) {
- pr_dbg("block_til_ready: close in progress.\n");
- interruptible_sleep_on(&port->port.close_wait);
- if (port->port.flags & ASYNC_HUP_NOTIFY)
- return -EAGAIN;
- else
- return -ERESTARTSYS;
- }
-
- /* if non-blocking mode is set ... */
-
- if ((filp->f_flags & O_NONBLOCK) ||
- (tty->flags & (1 << TTY_IO_ERROR))) {
- pr_dbg("block_til_ready: non-block mode.\n");
- port->port.flags |= ASYNC_NORMAL_ACTIVE;
- return 0;
- }
-
- if (C_CLOCAL(tty))
- do_clocal = 1;
-
- /* block waiting for DCD to be asserted, and while
- callout dev is busy */
- retval = 0;
- add_wait_queue(&port->port.open_wait, &wait);
-
- spin_lock_irqsave(&card->card_lock, flags);
- if (!tty_hung_up_p(filp))
- port->port.count--;
- port->port.blocked_open++;
- spin_unlock_irqrestore(&card->card_lock, flags);
-
- while (1) {
- raise_dtr_rts(port);
-
- set_current_state(TASK_INTERRUPTIBLE);
- if (tty_hung_up_p(filp) || !(port->port.flags & ASYNC_INITIALIZED)) {
- if (port->port.flags & ASYNC_HUP_NOTIFY)
- retval = -EAGAIN;
- else
- retval = -ERESTARTSYS;
- break;
- }
- if (!(port->port.flags & ASYNC_CLOSING) &&
- (do_clocal || (port->status & ISI_DCD))) {
- break;
- }
- if (signal_pending(current)) {
- retval = -ERESTARTSYS;
- break;
- }
- schedule();
- }
- set_current_state(TASK_RUNNING);
- remove_wait_queue(&port->port.open_wait, &wait);
- spin_lock_irqsave(&card->card_lock, flags);
- if (!tty_hung_up_p(filp))
- port->port.count++;
- port->port.blocked_open--;
- spin_unlock_irqrestore(&card->card_lock, flags);
- if (retval)
- return retval;
- port->port.flags |= ASYNC_NORMAL_ACTIVE;
- return 0;
+ struct isi_port *ip = container_of(port, struct isi_port, port);
+ return (ip->status & ISI_DCD)?1 : 0;
}
static int isicom_open(struct tty_struct *tty, struct file *filp)
@@ -932,12 +864,13 @@
isicom_setup_board(card);
+ /* FIXME: locking on port.count etc */
port->port.count++;
tty->driver_data = port;
tty_port_tty_set(&port->port, tty);
error = isicom_setup_port(tty);
if (error == 0)
- error = block_til_ready(tty, filp, port);
+ error = tty_port_block_til_ready(&port->port, tty, filp);
return error;
}
@@ -1012,76 +945,30 @@
static void isicom_close(struct tty_struct *tty, struct file *filp)
{
- struct isi_port *port = tty->driver_data;
+ struct isi_port *ip = tty->driver_data;
+ struct tty_port *port = &ip->port;
struct isi_board *card;
unsigned long flags;
- if (!port)
- return;
- card = port->card;
- if (isicom_paranoia_check(port, tty->name, "isicom_close"))
+ BUG_ON(!ip);
+
+ card = ip->card;
+ if (isicom_paranoia_check(ip, tty->name, "isicom_close"))
return;
- pr_dbg("Close start!!!.\n");
-
- spin_lock_irqsave(&card->card_lock, flags);
- if (tty_hung_up_p(filp)) {
- spin_unlock_irqrestore(&card->card_lock, flags);
- return;
- }
-
- if (tty->count == 1 && port->port.count != 1) {
- printk(KERN_WARNING "ISICOM:(0x%lx) isicom_close: bad port "
- "count tty->count = 1 port count = %d.\n",
- card->base, port->port.count);
- port->port.count = 1;
- }
- if (--port->port.count < 0) {
- printk(KERN_WARNING "ISICOM:(0x%lx) isicom_close: bad port "
- "count for channel%d = %d", card->base, port->channel,
- port->port.count);
- port->port.count = 0;
- }
-
- if (port->port.count) {
- spin_unlock_irqrestore(&card->card_lock, flags);
- return;
- }
- port->port.flags |= ASYNC_CLOSING;
- tty->closing = 1;
- spin_unlock_irqrestore(&card->card_lock, flags);
-
- if (port->port.closing_wait != ASYNC_CLOSING_WAIT_NONE)
- tty_wait_until_sent(tty, port->port.closing_wait);
/* indicate to the card that no more data can be received
on this port */
spin_lock_irqsave(&card->card_lock, flags);
- if (port->port.flags & ASYNC_INITIALIZED) {
- card->port_status &= ~(1 << port->channel);
+ if (port->flags & ASYNC_INITIALIZED) {
+ card->port_status &= ~(1 << ip->channel);
outw(card->port_status, card->base + 0x02);
}
- isicom_shutdown_port(port);
+ isicom_shutdown_port(ip);
spin_unlock_irqrestore(&card->card_lock, flags);
isicom_flush_buffer(tty);
- tty_ldisc_flush(tty);
-
- spin_lock_irqsave(&card->card_lock, flags);
- tty->closing = 0;
-
- if (port->port.blocked_open) {
- spin_unlock_irqrestore(&card->card_lock, flags);
- if (port->port.close_delay) {
- pr_dbg("scheduling until time out.\n");
- msleep_interruptible(
- jiffies_to_msecs(port->port.close_delay));
- }
- spin_lock_irqsave(&card->card_lock, flags);
- wake_up_interruptible(&port->port.open_wait);
- }
- port->port.flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING);
- wake_up_interruptible(&port->port.close_wait);
- spin_unlock_irqrestore(&card->card_lock, flags);
+
+ tty_port_close_end(port, tty);
}
/* write et all */
@@ -1420,10 +1307,7 @@
isicom_shutdown_port(port);
spin_unlock_irqrestore(&port->card->card_lock, flags);
- port->port.count = 0;
- port->port.flags &= ~ASYNC_NORMAL_ACTIVE;
- tty_port_tty_set(&port->port, NULL);
- wake_up_interruptible(&port->port.open_wait);
+ tty_port_hangup(&port->port);
}
@@ -1452,6 +1336,11 @@
.break_ctl = isicom_send_break,
};
+static const struct tty_port_operations isicom_port_ops = {
+ .carrier_raised = isicom_carrier_raised,
+ .raise_dtr_rts = isicom_raise_dtr_rts,
+};
+
static int __devinit reset_card(struct pci_dev *pdev,
const unsigned int card, unsigned int *signature)
{
@@ -1794,6 +1683,7 @@
spin_lock_init(&isi_card[idx].card_lock);
for (channel = 0; channel < 16; channel++, port++) {
tty_port_init(&port->port);
+ port->port.ops = &isicom_port_ops;
port->magic = ISICOM_MAGIC;
port->card = &isi_card[idx];
port->channel = channel;
diff --git a/drivers/char/istallion.c b/drivers/char/istallion.c
index 4b10770..5c3dc6b 100644
--- a/drivers/char/istallion.c
+++ b/drivers/char/istallion.c
@@ -151,7 +151,7 @@
static char *stli_serialname = "ttyE";
static struct tty_driver *stli_serial;
-
+static const struct tty_port_operations stli_port_ops;
#define STLI_TXBUFSIZE 4096
@@ -626,8 +626,6 @@
static int stli_initopen(struct tty_struct *tty, struct stlibrd *brdp, struct stliport *portp);
static int stli_rawopen(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait);
static int stli_rawclose(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait);
-static int stli_waitcarrier(struct tty_struct *tty, struct stlibrd *brdp,
- struct stliport *portp, struct file *filp);
static int stli_setport(struct tty_struct *tty);
static int stli_cmdwait(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback);
static void stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback);
@@ -769,7 +767,7 @@
break;
}
if (i == ARRAY_SIZE(stli_brdstr)) {
- printk("STALLION: unknown board name, %s?\n", argp[0]);
+ printk(KERN_WARNING "istallion: unknown board name, %s?\n", argp[0]);
return 0;
}
@@ -787,6 +785,7 @@
{
struct stlibrd *brdp;
struct stliport *portp;
+ struct tty_port *port;
unsigned int minordev, brdnr, portnr;
int rc;
@@ -808,30 +807,19 @@
return -ENODEV;
if (portp->devnr < 1)
return -ENODEV;
-
-
-/*
- * Check if this port is in the middle of closing. If so then wait
- * until it is closed then return error status based on flag settings.
- * The sleep here does not need interrupt protection since the wakeup
- * for it is done with the same context.
- */
- if (portp->port.flags & ASYNC_CLOSING) {
- interruptible_sleep_on(&portp->port.close_wait);
- if (portp->port.flags & ASYNC_HUP_NOTIFY)
- return -EAGAIN;
- return -ERESTARTSYS;
- }
+ port = &portp->port;
/*
* On the first open of the device setup the port hardware, and
* initialize the per port data structure. Since initializing the port
* requires several commands to the board we will need to wait for any
* other open that is already initializing the port.
+ *
+ * Review - locking
*/
- tty_port_tty_set(&portp->port, tty);
+ tty_port_tty_set(port, tty);
tty->driver_data = portp;
- portp->port.count++;
+ port->count++;
wait_event_interruptible(portp->raw_wait,
!test_bit(ST_INITIALIZING, &portp->state));
@@ -841,7 +829,8 @@
if ((portp->port.flags & ASYNC_INITIALIZED) == 0) {
set_bit(ST_INITIALIZING, &portp->state);
if ((rc = stli_initopen(tty, brdp, portp)) >= 0) {
- portp->port.flags |= ASYNC_INITIALIZED;
+ /* Locking */
+ port->flags |= ASYNC_INITIALIZED;
clear_bit(TTY_IO_ERROR, &tty->flags);
}
clear_bit(ST_INITIALIZING, &portp->state);
@@ -849,31 +838,7 @@
if (rc < 0)
return rc;
}
-
-/*
- * Check if this port is in the middle of closing. If so then wait
- * until it is closed then return error status, based on flag settings.
- * The sleep here does not need interrupt protection since the wakeup
- * for it is done with the same context.
- */
- if (portp->port.flags & ASYNC_CLOSING) {
- interruptible_sleep_on(&portp->port.close_wait);
- if (portp->port.flags & ASYNC_HUP_NOTIFY)
- return -EAGAIN;
- return -ERESTARTSYS;
- }
-
-/*
- * Based on type of open being done check if it can overlap with any
- * previous opens still in effect. If we are a normal serial device
- * then also we might have to wait for carrier.
- */
- if (!(filp->f_flags & O_NONBLOCK)) {
- if ((rc = stli_waitcarrier(tty, brdp, portp, filp)) != 0)
- return rc;
- }
- portp->port.flags |= ASYNC_NORMAL_ACTIVE;
- return 0;
+ return tty_port_block_til_ready(&portp->port, tty, filp);
}
/*****************************************************************************/
@@ -882,25 +847,16 @@
{
struct stlibrd *brdp;
struct stliport *portp;
+ struct tty_port *port;
unsigned long flags;
portp = tty->driver_data;
if (portp == NULL)
return;
+ port = &portp->port;
- spin_lock_irqsave(&stli_lock, flags);
- if (tty_hung_up_p(filp)) {
- spin_unlock_irqrestore(&stli_lock, flags);
+ if (tty_port_close_start(port, tty, filp) == 0)
return;
- }
- if ((tty->count == 1) && (portp->port.count != 1))
- portp->port.count = 1;
- if (portp->port.count-- > 1) {
- spin_unlock_irqrestore(&stli_lock, flags);
- return;
- }
-
- portp->port.flags |= ASYNC_CLOSING;
/*
* May want to wait for data to drain before closing. The BUSY flag
@@ -908,15 +864,19 @@
* updated by messages from the slave - indicating when all chars
* really have drained.
*/
+ spin_lock_irqsave(&stli_lock, flags);
if (tty == stli_txcooktty)
stli_flushchars(tty);
- tty->closing = 1;
spin_unlock_irqrestore(&stli_lock, flags);
+ /* We end up doing this twice for the moment. This needs looking at
+ eventually. Note we still use portp->closing_wait as a result */
if (portp->closing_wait != ASYNC_CLOSING_WAIT_NONE)
tty_wait_until_sent(tty, portp->closing_wait);
- portp->port.flags &= ~ASYNC_INITIALIZED;
+ /* FIXME: port locking here needs attending to */
+ port->flags &= ~ASYNC_INITIALIZED;
+
brdp = stli_brds[portp->brdnr];
stli_rawclose(brdp, portp, 0, 0);
if (tty->termios->c_cflag & HUPCL) {
@@ -934,17 +894,8 @@
set_bit(ST_DOFLUSHRX, &portp->state);
stli_flushbuffer(tty);
- tty->closing = 0;
- tty_port_tty_set(&portp->port, NULL);
-
- if (portp->openwaitcnt) {
- if (portp->close_delay)
- msleep_interruptible(jiffies_to_msecs(portp->close_delay));
- wake_up_interruptible(&portp->port.open_wait);
- }
-
- portp->port.flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
- wake_up_interruptible(&portp->port.close_wait);
+ tty_port_close_end(port, tty);
+ tty_port_tty_set(port, NULL);
}
/*****************************************************************************/
@@ -1183,62 +1134,23 @@
/*****************************************************************************/
-/*
- * Possibly need to wait for carrier (DCD signal) to come high. Say
- * maybe because if we are clocal then we don't need to wait...
- */
-
-static int stli_waitcarrier(struct tty_struct *tty, struct stlibrd *brdp,
- struct stliport *portp, struct file *filp)
+static int stli_carrier_raised(struct tty_port *port)
{
- unsigned long flags;
- int rc, doclocal;
-
- rc = 0;
- doclocal = 0;
-
- if (tty->termios->c_cflag & CLOCAL)
- doclocal++;
-
- spin_lock_irqsave(&stli_lock, flags);
- portp->openwaitcnt++;
- if (! tty_hung_up_p(filp))
- portp->port.count--;
- spin_unlock_irqrestore(&stli_lock, flags);
-
- for (;;) {
- stli_mkasysigs(&portp->asig, 1, 1);
- if ((rc = stli_cmdwait(brdp, portp, A_SETSIGNALS,
- &portp->asig, sizeof(asysigs_t), 0)) < 0)
- break;
- if (tty_hung_up_p(filp) ||
- ((portp->port.flags & ASYNC_INITIALIZED) == 0)) {
- if (portp->port.flags & ASYNC_HUP_NOTIFY)
- rc = -EBUSY;
- else
- rc = -ERESTARTSYS;
- break;
- }
- if (((portp->port.flags & ASYNC_CLOSING) == 0) &&
- (doclocal || (portp->sigs & TIOCM_CD))) {
- break;
- }
- if (signal_pending(current)) {
- rc = -ERESTARTSYS;
- break;
- }
- interruptible_sleep_on(&portp->port.open_wait);
- }
-
- spin_lock_irqsave(&stli_lock, flags);
- if (! tty_hung_up_p(filp))
- portp->port.count++;
- portp->openwaitcnt--;
- spin_unlock_irqrestore(&stli_lock, flags);
-
- return rc;
+ struct stliport *portp = container_of(port, struct stliport, port);
+ return (portp->sigs & TIOCM_CD) ? 1 : 0;
}
+static void stli_raise_dtr_rts(struct tty_port *port)
+{
+ struct stliport *portp = container_of(port, struct stliport, port);
+ struct stlibrd *brdp = stli_brds[portp->brdnr];
+ stli_mkasysigs(&portp->asig, 1, 1);
+ if (stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig,
+ sizeof(asysigs_t), 0) < 0)
+ printk(KERN_WARNING "istallion: dtr raise failed.\n");
+}
+
+
/*****************************************************************************/
/*
@@ -1550,7 +1462,7 @@
sio.irq = 0;
sio.flags = portp->port.flags;
sio.baud_base = portp->baud_base;
- sio.close_delay = portp->close_delay;
+ sio.close_delay = portp->port.close_delay;
sio.closing_wait = portp->closing_wait;
sio.custom_divisor = portp->custom_divisor;
sio.xmit_fifo_size = 0;
@@ -1582,7 +1494,7 @@
return -EFAULT;
if (!capable(CAP_SYS_ADMIN)) {
if ((sio.baud_base != portp->baud_base) ||
- (sio.close_delay != portp->close_delay) ||
+ (sio.close_delay != portp->port.close_delay) ||
((sio.flags & ~ASYNC_USR_MASK) !=
(portp->port.flags & ~ASYNC_USR_MASK)))
return -EPERM;
@@ -1591,7 +1503,7 @@
portp->port.flags = (portp->port.flags & ~ASYNC_USR_MASK) |
(sio.flags & ASYNC_USR_MASK);
portp->baud_base = sio.baud_base;
- portp->close_delay = sio.close_delay;
+ portp->port.close_delay = sio.close_delay;
portp->closing_wait = sio.closing_wait;
portp->custom_divisor = sio.custom_divisor;
@@ -1821,6 +1733,7 @@
{
struct stliport *portp;
struct stlibrd *brdp;
+ struct tty_port *port;
unsigned long flags;
portp = tty->driver_data;
@@ -1831,8 +1744,11 @@
brdp = stli_brds[portp->brdnr];
if (brdp == NULL)
return;
+ port = &portp->port;
- portp->port.flags &= ~ASYNC_INITIALIZED;
+ spin_lock_irqsave(&port->lock, flags);
+ port->flags &= ~ASYNC_INITIALIZED;
+ spin_unlock_irqrestore(&port->lock, flags);
if (!test_bit(ST_CLOSING, &portp->state))
stli_rawclose(brdp, portp, 0, 0);
@@ -1853,12 +1769,9 @@
clear_bit(ST_TXBUSY, &portp->state);
clear_bit(ST_RXSTOP, &portp->state);
set_bit(TTY_IO_ERROR, &tty->flags);
- tty_port_tty_set(&portp->port, NULL);
- portp->port.flags &= ~ASYNC_NORMAL_ACTIVE;
- portp->port.count = 0;
spin_unlock_irqrestore(&stli_lock, flags);
- wake_up_interruptible(&portp->port.open_wait);
+ tty_port_hangup(port);
}
/*****************************************************************************/
@@ -2132,7 +2045,7 @@
unsigned char __iomem *bits;
if (test_bit(ST_CMDING, &portp->state)) {
- printk(KERN_ERR "STALLION: command already busy, cmd=%x!\n",
+ printk(KERN_ERR "istallion: command already busy, cmd=%x!\n",
(int) cmd);
return;
}
@@ -2692,16 +2605,17 @@
for (i = 0, panelnr = 0, panelport = 0; (i < brdp->nrports); i++) {
portp = kzalloc(sizeof(struct stliport), GFP_KERNEL);
if (!portp) {
- printk("STALLION: failed to allocate port structure\n");
+ printk(KERN_WARNING "istallion: failed to allocate port structure\n");
continue;
}
tty_port_init(&portp->port);
+ portp->port.ops = &stli_port_ops;
portp->magic = STLI_PORTMAGIC;
portp->portnr = i;
portp->brdnr = brdp->brdnr;
portp->panelnr = panelnr;
portp->baud_base = STL_BAUDBASE;
- portp->close_delay = STL_CLOSEDELAY;
+ portp->port.close_delay = STL_CLOSEDELAY;
portp->closing_wait = 30 * HZ;
init_waitqueue_head(&portp->port.open_wait);
init_waitqueue_head(&portp->port.close_wait);
@@ -2758,7 +2672,7 @@
unsigned char val;
if (offset > brdp->memsize) {
- printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
+ printk(KERN_ERR "istallion: shared memory pointer=%x out of "
"range at line=%d(%d), brd=%d\n",
(int) offset, line, __LINE__, brdp->brdnr);
ptr = NULL;
@@ -2832,7 +2746,7 @@
unsigned char val;
if (offset > brdp->memsize) {
- printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
+ printk(KERN_ERR "istallion: shared memory pointer=%x out of "
"range at line=%d(%d), brd=%d\n",
(int) offset, line, __LINE__, brdp->brdnr);
ptr = NULL;
@@ -2884,7 +2798,7 @@
unsigned char val;
if (offset > brdp->memsize) {
- printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
+ printk(KERN_ERR "istallion: shared memory pointer=%x out of "
"range at line=%d(%d), brd=%d\n",
(int) offset, line, __LINE__, brdp->brdnr);
ptr = NULL;
@@ -2929,7 +2843,7 @@
unsigned char val;
if (offset > brdp->memsize) {
- printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
+ printk(KERN_ERR "istallion: shared memory pointer=%x out of "
"range at line=%d(%d), board=%d\n",
(int) offset, line, __LINE__, brdp->brdnr);
ptr = NULL;
@@ -2994,7 +2908,7 @@
void __iomem *ptr;
if (offset > brdp->memsize) {
- printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
+ printk(KERN_ERR "istallion: shared memory pointer=%x out of "
"range at line=%d(%d), brd=%d\n",
(int) offset, line, __LINE__, brdp->brdnr);
ptr = NULL;
@@ -3060,7 +2974,7 @@
unsigned char val;
if (offset > brdp->memsize) {
- printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
+ printk(KERN_ERR "istallion: shared memory pointer=%x out of "
"range at line=%d(%d), brd=%d\n",
(int) offset, line, __LINE__, brdp->brdnr);
ptr = NULL;
@@ -3499,7 +3413,7 @@
#endif
if (nrdevs < (brdp->nrports + 1)) {
- printk(KERN_ERR "STALLION: slave failed to allocate memory for "
+ printk(KERN_ERR "istallion: slave failed to allocate memory for "
"all devices, devices=%d\n", nrdevs);
brdp->nrports = nrdevs - 1;
}
@@ -3509,13 +3423,13 @@
brdp->bitsize = (nrdevs + 7) / 8;
memoff = readl(&hdrp->memp);
if (memoff > brdp->memsize) {
- printk(KERN_ERR "STALLION: corrupted shared memory region?\n");
+ printk(KERN_ERR "istallion: corrupted shared memory region?\n");
rc = -EIO;
goto stli_donestartup;
}
memp = (cdkmem_t __iomem *) EBRDGETMEMPTR(brdp, memoff);
if (readw(&memp->dtype) != TYP_ASYNCTRL) {
- printk(KERN_ERR "STALLION: no slave control device found\n");
+ printk(KERN_ERR "istallion: no slave control device found\n");
goto stli_donestartup;
}
memp++;
@@ -3600,7 +3514,7 @@
retval = stli_initonb(brdp);
break;
default:
- printk(KERN_ERR "STALLION: board=%d is unknown board "
+ printk(KERN_ERR "istallion: board=%d is unknown board "
"type=%d\n", brdp->brdnr, brdp->brdtype);
retval = -ENODEV;
}
@@ -3609,7 +3523,7 @@
return retval;
stli_initports(brdp);
- printk(KERN_INFO "STALLION: %s found, board=%d io=%x mem=%x "
+ printk(KERN_INFO "istallion: %s found, board=%d io=%x mem=%x "
"nrpanels=%d nrports=%d\n", stli_brdnames[brdp->brdtype],
brdp->brdnr, brdp->iobase, (int) brdp->memaddr,
brdp->nrpanels, brdp->nrports);
@@ -3703,7 +3617,7 @@
if (! foundit) {
brdp->memaddr = 0;
brdp->membase = NULL;
- printk(KERN_ERR "STALLION: failed to probe shared memory "
+ printk(KERN_ERR "istallion: failed to probe shared memory "
"region for %s in EISA slot=%d\n",
stli_brdnames[brdp->brdtype], (brdp->iobase >> 12));
return -ENODEV;
@@ -3848,7 +3762,7 @@
mutex_lock(&stli_brdslock);
brdnr = stli_getbrdnr();
if (brdnr < 0) {
- printk(KERN_INFO "STALLION: too many boards found, "
+ printk(KERN_INFO "istallion: too many boards found, "
"maximum supported %d\n", STL_MAXBRDS);
mutex_unlock(&stli_brdslock);
retval = -EIO;
@@ -3920,7 +3834,7 @@
brdp = kzalloc(sizeof(struct stlibrd), GFP_KERNEL);
if (!brdp) {
- printk(KERN_ERR "STALLION: failed to allocate memory "
+ printk(KERN_ERR "istallion: failed to allocate memory "
"(size=%Zd)\n", sizeof(struct stlibrd));
return NULL;
}
@@ -4518,6 +4432,11 @@
.tiocmset = stli_tiocmset,
};
+static const struct tty_port_operations stli_port_ops = {
+ .carrier_raised = stli_carrier_raised,
+ .raise_dtr_rts = stli_raise_dtr_rts,
+};
+
/*****************************************************************************/
/*
* Loadable module initialization stuff.
@@ -4554,7 +4473,7 @@
stli_txcookbuf = kmalloc(STLI_TXBUFSIZE, GFP_KERNEL);
if (!stli_txcookbuf) {
- printk(KERN_ERR "STALLION: failed to allocate memory "
+ printk(KERN_ERR "istallion: failed to allocate memory "
"(size=%d)\n", STLI_TXBUFSIZE);
retval = -ENOMEM;
goto err;
@@ -4579,7 +4498,7 @@
retval = tty_register_driver(stli_serial);
if (retval) {
- printk(KERN_ERR "STALLION: failed to register serial driver\n");
+ printk(KERN_ERR "istallion: failed to register serial driver\n");
goto err_ttyput;
}
@@ -4593,7 +4512,7 @@
*/
retval = register_chrdev(STL_SIOMEMMAJOR, "staliomem", &stli_fsiomem);
if (retval) {
- printk(KERN_ERR "STALLION: failed to register serial memory "
+ printk(KERN_ERR "istallion: failed to register serial memory "
"device\n");
goto err_deinit;
}
diff --git a/drivers/char/moxa.c b/drivers/char/moxa.c
index 12d327a..8b0da97 100644
--- a/drivers/char/moxa.c
+++ b/drivers/char/moxa.c
@@ -206,6 +206,7 @@
static void moxa_set_tty_param(struct tty_struct *, struct ktermios *);
static void moxa_setup_empty_event(struct tty_struct *);
static void moxa_shut_down(struct tty_struct *);
+static int moxa_carrier_raised(struct tty_port *);
/*
* moxa board interface functions:
*/
@@ -405,6 +406,10 @@
.tiocmset = moxa_tiocmset,
};
+static const struct tty_port_operations moxa_port_ops = {
+ .carrier_raised = moxa_carrier_raised,
+};
+
static struct tty_driver *moxaDriver;
static DEFINE_TIMER(moxaTimer, moxa_poll, 0, 0);
static DEFINE_SPINLOCK(moxa_lock);
@@ -826,6 +831,7 @@
for (i = 0, p = brd->ports; i < MAX_PORTS_PER_BOARD; i++, p++) {
tty_port_init(&p->port);
+ p->port.ops = &moxa_port_ops;
p->type = PORT_16550A;
p->cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL;
}
@@ -1115,15 +1121,27 @@
tty_port_tty_set(&ch->port, NULL);
}
+static int moxa_carrier_raised(struct tty_port *port)
+{
+ struct moxa_port *ch = container_of(port, struct moxa_port, port);
+ int dcd;
+
+ spin_lock_bh(&moxa_lock);
+ dcd = ch->DCDState;
+ spin_unlock_bh(&moxa_lock);
+ return dcd;
+}
+
static int moxa_block_till_ready(struct tty_struct *tty, struct file *filp,
struct moxa_port *ch)
{
+ struct tty_port *port = &ch->port;
DEFINE_WAIT(wait);
int retval = 0;
u8 dcd;
while (1) {
- prepare_to_wait(&ch->port.open_wait, &wait, TASK_INTERRUPTIBLE);
+ prepare_to_wait(&port->open_wait, &wait, TASK_INTERRUPTIBLE);
if (tty_hung_up_p(filp)) {
#ifdef SERIAL_DO_RESTART
retval = -ERESTARTSYS;
@@ -1132,9 +1150,7 @@
#endif
break;
}
- spin_lock_bh(&moxa_lock);
- dcd = ch->DCDState;
- spin_unlock_bh(&moxa_lock);
+ dcd = tty_port_carrier_raised(port);
if (dcd)
break;
@@ -1144,7 +1160,7 @@
}
schedule();
}
- finish_wait(&ch->port.open_wait, &wait);
+ finish_wait(&port->open_wait, &wait);
return retval;
}
diff --git a/drivers/char/mxser.c b/drivers/char/mxser.c
index 0477669..402c9f2 100644
--- a/drivers/char/mxser.c
+++ b/drivers/char/mxser.c
@@ -541,74 +541,21 @@
return status;
}
-static int mxser_block_til_ready(struct tty_struct *tty, struct file *filp,
- struct mxser_port *port)
+static int mxser_carrier_raised(struct tty_port *port)
{
- DECLARE_WAITQUEUE(wait, current);
- int retval;
- int do_clocal = 0;
+ struct mxser_port *mp = container_of(port, struct mxser_port, port);
+ return (inb(mp->ioaddr + UART_MSR) & UART_MSR_DCD)?1:0;
+}
+
+static void mxser_raise_dtr_rts(struct tty_port *port)
+{
+ struct mxser_port *mp = container_of(port, struct mxser_port, port);
unsigned long flags;
- /*
- * If non-blocking mode is set, or the port is not enabled,
- * then make the check up front and then exit.
- */
- if ((filp->f_flags & O_NONBLOCK) ||
- test_bit(TTY_IO_ERROR, &tty->flags)) {
- port->port.flags |= ASYNC_NORMAL_ACTIVE;
- return 0;
- }
-
- if (tty->termios->c_cflag & CLOCAL)
- do_clocal = 1;
-
- /*
- * Block waiting for the carrier detect and the line to become
- * free (i.e., not in use by the callout). While we are in
- * this loop, port->port.count is dropped by one, so that
- * mxser_close() knows when to free things. We restore it upon
- * exit, either normal or abnormal.
- */
- retval = 0;
- add_wait_queue(&port->port.open_wait, &wait);
-
- spin_lock_irqsave(&port->slock, flags);
- if (!tty_hung_up_p(filp))
- port->port.count--;
- spin_unlock_irqrestore(&port->slock, flags);
- port->port.blocked_open++;
- while (1) {
- spin_lock_irqsave(&port->slock, flags);
- outb(inb(port->ioaddr + UART_MCR) |
- UART_MCR_DTR | UART_MCR_RTS, port->ioaddr + UART_MCR);
- spin_unlock_irqrestore(&port->slock, flags);
- set_current_state(TASK_INTERRUPTIBLE);
- if (tty_hung_up_p(filp) || !(port->port.flags & ASYNC_INITIALIZED)) {
- if (port->port.flags & ASYNC_HUP_NOTIFY)
- retval = -EAGAIN;
- else
- retval = -ERESTARTSYS;
- break;
- }
- if (!(port->port.flags & ASYNC_CLOSING) &&
- (do_clocal ||
- (inb(port->ioaddr + UART_MSR) & UART_MSR_DCD)))
- break;
- if (signal_pending(current)) {
- retval = -ERESTARTSYS;
- break;
- }
- schedule();
- }
- set_current_state(TASK_RUNNING);
- remove_wait_queue(&port->port.open_wait, &wait);
- if (!tty_hung_up_p(filp))
- port->port.count++;
- port->port.blocked_open--;
- if (retval)
- return retval;
- port->port.flags |= ASYNC_NORMAL_ACTIVE;
- return 0;
+ spin_lock_irqsave(&mp->slock, flags);
+ outb(inb(mp->ioaddr + UART_MCR) |
+ UART_MCR_DTR | UART_MCR_RTS, mp->ioaddr + UART_MCR);
+ spin_unlock_irqrestore(&mp->slock, flags);
}
static int mxser_set_baud(struct tty_struct *tty, long newspd)
@@ -1087,14 +1034,14 @@
/*
* Start up serial port
*/
- spin_lock_irqsave(&info->slock, flags);
+ spin_lock_irqsave(&info->port.lock, flags);
info->port.count++;
- spin_unlock_irqrestore(&info->slock, flags);
+ spin_unlock_irqrestore(&info->port.lock, flags);
retval = mxser_startup(tty);
if (retval)
return retval;
- retval = mxser_block_til_ready(tty, filp, info);
+ retval = tty_port_block_til_ready(&info->port, tty, filp);
if (retval)
return retval;
@@ -1133,58 +1080,27 @@
static void mxser_close(struct tty_struct *tty, struct file *filp)
{
struct mxser_port *info = tty->driver_data;
+ struct tty_port *port = &info->port;
unsigned long timeout;
- unsigned long flags;
if (tty->index == MXSER_PORTS)
return;
if (!info)
return;
- spin_lock_irqsave(&info->slock, flags);
+ if (tty_port_close_start(port, tty, filp) == 0)
+ return;
- if (tty_hung_up_p(filp)) {
- spin_unlock_irqrestore(&info->slock, flags);
- return;
- }
- if ((tty->count == 1) && (info->port.count != 1)) {
- /*
- * Uh, oh. tty->count is 1, which means that the tty
- * structure will be freed. Info->port.count should always
- * be one in these conditions. If it's greater than
- * one, we've got real problems, since it means the
- * serial port won't be shutdown.
- */
- printk(KERN_ERR "mxser_close: bad serial port count; "
- "tty->count is 1, info->port.count is %d\n", info->port.count);
- info->port.count = 1;
- }
- if (--info->port.count < 0) {
- printk(KERN_ERR "mxser_close: bad serial port count for "
- "ttys%d: %d\n", tty->index, info->port.count);
- info->port.count = 0;
- }
- if (info->port.count) {
- spin_unlock_irqrestore(&info->slock, flags);
- return;
- }
- info->port.flags |= ASYNC_CLOSING;
- spin_unlock_irqrestore(&info->slock, flags);
/*
* Save the termios structure, since this port may have
* separate termios for callout and dialin.
+ *
+ * FIXME: Can this go ?
*/
if (info->port.flags & ASYNC_NORMAL_ACTIVE)
info->normal_termios = *tty->termios;
/*
- * Now we wait for the transmit buffer to clear; and we notify
- * the line discipline to only process XON/XOFF characters.
- */
- tty->closing = 1;
- if (info->port.closing_wait != ASYNC_CLOSING_WAIT_NONE)
- tty_wait_until_sent(tty, info->port.closing_wait);
- /*
* At this point we stop accepting input. To do this, we
* disable the receive line status interrupts, and tell the
* interrupt driver to stop checking the data ready bit in the
@@ -1209,19 +1125,12 @@
}
}
mxser_shutdown(tty);
-
mxser_flush_buffer(tty);
- tty_ldisc_flush(tty);
- tty->closing = 0;
- tty_port_tty_set(&info->port, NULL);
- if (info->port.blocked_open) {
- if (info->port.close_delay)
- schedule_timeout_interruptible(info->port.close_delay);
- wake_up_interruptible(&info->port.open_wait);
- }
-
- info->port.flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING);
+ /* Right now the tty_port set is done outside of the close_end helper
+ as we don't yet have everyone using refcounts */
+ tty_port_close_end(port, tty);
+ tty_port_tty_set(port, NULL);
}
static int mxser_write(struct tty_struct *tty, const unsigned char *buf, int count)
@@ -2146,10 +2055,7 @@
mxser_flush_buffer(tty);
mxser_shutdown(tty);
- info->port.count = 0;
- info->port.flags &= ~ASYNC_NORMAL_ACTIVE;
- tty_port_tty_set(&info->port, NULL);
- wake_up_interruptible(&info->port.open_wait);
+ tty_port_hangup(&info->port);
}
/*
@@ -2449,6 +2355,11 @@
.tiocmset = mxser_tiocmset,
};
+struct tty_port_operations mxser_port_ops = {
+ .carrier_raised = mxser_carrier_raised,
+ .raise_dtr_rts = mxser_raise_dtr_rts,
+};
+
/*
* The MOXA Smartio/Industio serial driver boot-time initialization code!
*/
@@ -2482,6 +2393,7 @@
for (i = 0; i < brd->info->nports; i++) {
info = &brd->ports[i];
tty_port_init(&info->port);
+ info->port.ops = &mxser_port_ops;
info->board = brd;
info->stop_rx = 0;
info->ldisc_stop_rx = 0;
diff --git a/drivers/char/n_r3964.c b/drivers/char/n_r3964.c
index 4a8215a..d2e93e3 100644
--- a/drivers/char/n_r3964.c
+++ b/drivers/char/n_r3964.c
@@ -1003,7 +1003,7 @@
static void r3964_close(struct tty_struct *tty)
{
- struct r3964_info *pInfo = (struct r3964_info *)tty->disc_data;
+ struct r3964_info *pInfo = tty->disc_data;
struct r3964_client_info *pClient, *pNext;
struct r3964_message *pMsg;
struct r3964_block_header *pHeader, *pNextHeader;
@@ -1058,7 +1058,7 @@
static ssize_t r3964_read(struct tty_struct *tty, struct file *file,
unsigned char __user * buf, size_t nr)
{
- struct r3964_info *pInfo = (struct r3964_info *)tty->disc_data;
+ struct r3964_info *pInfo = tty->disc_data;
struct r3964_client_info *pClient;
struct r3964_message *pMsg;
struct r3964_client_message theMsg;
@@ -1113,7 +1113,7 @@
static ssize_t r3964_write(struct tty_struct *tty, struct file *file,
const unsigned char *data, size_t count)
{
- struct r3964_info *pInfo = (struct r3964_info *)tty->disc_data;
+ struct r3964_info *pInfo = tty->disc_data;
struct r3964_block_header *pHeader;
struct r3964_client_info *pClient;
unsigned char *new_data;
@@ -1182,7 +1182,7 @@
static int r3964_ioctl(struct tty_struct *tty, struct file *file,
unsigned int cmd, unsigned long arg)
{
- struct r3964_info *pInfo = (struct r3964_info *)tty->disc_data;
+ struct r3964_info *pInfo = tty->disc_data;
if (pInfo == NULL)
return -EINVAL;
switch (cmd) {
@@ -1216,7 +1216,7 @@
static unsigned int r3964_poll(struct tty_struct *tty, struct file *file,
struct poll_table_struct *wait)
{
- struct r3964_info *pInfo = (struct r3964_info *)tty->disc_data;
+ struct r3964_info *pInfo = tty->disc_data;
struct r3964_client_info *pClient;
struct r3964_message *pMsg = NULL;
unsigned long flags;
@@ -1241,7 +1241,7 @@
static void r3964_receive_buf(struct tty_struct *tty, const unsigned char *cp,
char *fp, int count)
{
- struct r3964_info *pInfo = (struct r3964_info *)tty->disc_data;
+ struct r3964_info *pInfo = tty->disc_data;
const unsigned char *p;
char *f, flags = 0;
int i;
diff --git a/drivers/char/n_tty.c b/drivers/char/n_tty.c
index efbfe961..f6f0e4e 100644
--- a/drivers/char/n_tty.c
+++ b/drivers/char/n_tty.c
@@ -47,8 +47,8 @@
#include <linux/bitops.h>
#include <linux/audit.h>
#include <linux/file.h>
+#include <linux/uaccess.h>
-#include <asm/uaccess.h>
#include <asm/system.h>
/* number of characters left in xmit buffer before select has we have room */
@@ -62,6 +62,17 @@
#define TTY_THRESHOLD_THROTTLE 128 /* now based on remaining room */
#define TTY_THRESHOLD_UNTHROTTLE 128
+/*
+ * Special byte codes used in the echo buffer to represent operations
+ * or special handling of characters. Bytes in the echo buffer that
+ * are not part of such special blocks are treated as normal character
+ * codes.
+ */
+#define ECHO_OP_START 0xff
+#define ECHO_OP_MOVE_BACK_COL 0x80
+#define ECHO_OP_SET_CANON_COL 0x81
+#define ECHO_OP_ERASE_TAB 0x82
+
static inline unsigned char *alloc_buf(void)
{
gfp_t prio = in_interrupt() ? GFP_ATOMIC : GFP_KERNEL;
@@ -169,6 +180,7 @@
*
* Locking: tty_read_lock for read fields.
*/
+
static void reset_buffer_flags(struct tty_struct *tty)
{
unsigned long flags;
@@ -176,6 +188,11 @@
spin_lock_irqsave(&tty->read_lock, flags);
tty->read_head = tty->read_tail = tty->read_cnt = 0;
spin_unlock_irqrestore(&tty->read_lock, flags);
+
+ mutex_lock(&tty->echo_lock);
+ tty->echo_pos = tty->echo_cnt = tty->echo_overrun = 0;
+ mutex_unlock(&tty->echo_lock);
+
tty->canon_head = tty->canon_data = tty->erasing = 0;
memset(&tty->read_flags, 0, sizeof tty->read_flags);
n_tty_set_room(tty);
@@ -266,89 +283,118 @@
}
/**
- * opost - output post processor
+ * do_output_char - output one character
+ * @c: character (or partial unicode symbol)
+ * @tty: terminal device
+ * @space: space available in tty driver write buffer
+ *
+ * This is a helper function that handles one output character
+ * (including special characters like TAB, CR, LF, etc.),
+ * putting the results in the tty driver's write buffer.
+ *
+ * Note that Linux currently ignores TABDLY, CRDLY, VTDLY, FFDLY
+ * and NLDLY. They simply aren't relevant in the world today.
+ * If you ever need them, add them here.
+ *
+ * Returns the number of bytes of buffer space used or -1 if
+ * no space left.
+ *
+ * Locking: should be called under the output_lock to protect
+ * the column state and space left in the buffer
+ */
+
+static int do_output_char(unsigned char c, struct tty_struct *tty, int space)
+{
+ int spaces;
+
+ if (!space)
+ return -1;
+
+ switch (c) {
+ case '\n':
+ if (O_ONLRET(tty))
+ tty->column = 0;
+ if (O_ONLCR(tty)) {
+ if (space < 2)
+ return -1;
+ tty->canon_column = tty->column = 0;
+ tty_put_char(tty, '\r');
+ tty_put_char(tty, c);
+ return 2;
+ }
+ tty->canon_column = tty->column;
+ break;
+ case '\r':
+ if (O_ONOCR(tty) && tty->column == 0)
+ return 0;
+ if (O_OCRNL(tty)) {
+ c = '\n';
+ if (O_ONLRET(tty))
+ tty->canon_column = tty->column = 0;
+ break;
+ }
+ tty->canon_column = tty->column = 0;
+ break;
+ case '\t':
+ spaces = 8 - (tty->column & 7);
+ if (O_TABDLY(tty) == XTABS) {
+ if (space < spaces)
+ return -1;
+ tty->column += spaces;
+ tty->ops->write(tty, " ", spaces);
+ return spaces;
+ }
+ tty->column += spaces;
+ break;
+ case '\b':
+ if (tty->column > 0)
+ tty->column--;
+ break;
+ default:
+ if (!iscntrl(c)) {
+ if (O_OLCUC(tty))
+ c = toupper(c);
+ if (!is_continuation(c, tty))
+ tty->column++;
+ }
+ break;
+ }
+
+ tty_put_char(tty, c);
+ return 1;
+}
+
+/**
+ * process_output - output post processor
* @c: character (or partial unicode symbol)
* @tty: terminal device
*
* Perform OPOST processing. Returns -1 when the output device is
- * full and the character must be retried. Note that Linux currently
- * ignores TABDLY, CRDLY, VTDLY, FFDLY and NLDLY. They simply aren't
- * relevant in the world today. If you ever need them, add them here.
+ * full and the character must be retried.
*
- * Called from both the receive and transmit sides and can be called
- * re-entrantly. Relies on lock_kernel() for tty->column state.
+ * Locking: output_lock to protect column state and space left
+ * (also, this is called from n_tty_write under the
+ * tty layer write lock)
*/
-static int opost(unsigned char c, struct tty_struct *tty)
+static int process_output(unsigned char c, struct tty_struct *tty)
{
- int space, spaces;
+ int space, retval;
+
+ mutex_lock(&tty->output_lock);
space = tty_write_room(tty);
- if (!space)
- return -1;
+ retval = do_output_char(c, tty, space);
- lock_kernel();
- if (O_OPOST(tty)) {
- switch (c) {
- case '\n':
- if (O_ONLRET(tty))
- tty->column = 0;
- if (O_ONLCR(tty)) {
- if (space < 2) {
- unlock_kernel();
- return -1;
- }
- tty_put_char(tty, '\r');
- tty->column = 0;
- }
- tty->canon_column = tty->column;
- break;
- case '\r':
- if (O_ONOCR(tty) && tty->column == 0) {
- unlock_kernel();
- return 0;
- }
- if (O_OCRNL(tty)) {
- c = '\n';
- if (O_ONLRET(tty))
- tty->canon_column = tty->column = 0;
- break;
- }
- tty->canon_column = tty->column = 0;
- break;
- case '\t':
- spaces = 8 - (tty->column & 7);
- if (O_TABDLY(tty) == XTABS) {
- if (space < spaces) {
- unlock_kernel();
- return -1;
- }
- tty->column += spaces;
- tty->ops->write(tty, " ", spaces);
- unlock_kernel();
- return 0;
- }
- tty->column += spaces;
- break;
- case '\b':
- if (tty->column > 0)
- tty->column--;
- break;
- default:
- if (O_OLCUC(tty))
- c = toupper(c);
- if (!iscntrl(c) && !is_continuation(c, tty))
- tty->column++;
- break;
- }
- }
- tty_put_char(tty, c);
- unlock_kernel();
- return 0;
+ mutex_unlock(&tty->output_lock);
+ if (retval < 0)
+ return -1;
+ else
+ return 0;
}
/**
- * opost_block - block postprocess
+ * process_output_block - block post processor
* @tty: terminal device
* @inbuf: user buffer
* @nr: number of bytes
@@ -358,26 +404,32 @@
* the simple cases normally found and helps to generate blocks of
* symbols for the console driver and thus improve performance.
*
- * Called from n_tty_write under the tty layer write lock. Relies
- * on lock_kernel for the tty->column state.
+ * Locking: output_lock to protect column state and space left
+ * (also, this is called from n_tty_write under the
+ * tty layer write lock)
*/
-static ssize_t opost_block(struct tty_struct *tty,
- const unsigned char *buf, unsigned int nr)
+static ssize_t process_output_block(struct tty_struct *tty,
+ const unsigned char *buf, unsigned int nr)
{
int space;
int i;
const unsigned char *cp;
+ mutex_lock(&tty->output_lock);
+
space = tty_write_room(tty);
- if (!space)
+ if (!space) {
+ mutex_unlock(&tty->output_lock);
return 0;
+ }
if (nr > space)
nr = space;
- lock_kernel();
for (i = 0, cp = buf; i < nr; i++, cp++) {
- switch (*cp) {
+ unsigned char c = *cp;
+
+ switch (c) {
case '\n':
if (O_ONLRET(tty))
tty->column = 0;
@@ -399,54 +451,403 @@
tty->column--;
break;
default:
- if (O_OLCUC(tty))
- goto break_out;
- if (!iscntrl(*cp))
- tty->column++;
+ if (!iscntrl(c)) {
+ if (O_OLCUC(tty))
+ goto break_out;
+ if (!is_continuation(c, tty))
+ tty->column++;
+ }
break;
}
}
break_out:
- if (tty->ops->flush_chars)
- tty->ops->flush_chars(tty);
i = tty->ops->write(tty, buf, i);
- unlock_kernel();
+
+ mutex_unlock(&tty->output_lock);
return i;
}
+/**
+ * process_echoes - write pending echo characters
+ * @tty: terminal device
+ *
+ * Write previously buffered echo (and other ldisc-generated)
+ * characters to the tty.
+ *
+ * Characters generated by the ldisc (including echoes) need to
+ * be buffered because the driver's write buffer can fill during
+ * heavy program output. Echoing straight to the driver will
+ * often fail under these conditions, causing lost characters and
+ * resulting mismatches of ldisc state information.
+ *
+ * Since the ldisc state must represent the characters actually sent
+ * to the driver at the time of the write, operations like certain
+ * changes in column state are also saved in the buffer and executed
+ * here.
+ *
+ * A circular fifo buffer is used so that the most recent characters
+ * are prioritized. Also, when control characters are echoed with a
+ * prefixed "^", the pair is treated atomically and thus not separated.
+ *
+ * Locking: output_lock to protect column state and space left,
+ * echo_lock to protect the echo buffer
+ */
+
+static void process_echoes(struct tty_struct *tty)
+{
+ int space, nr;
+ unsigned char c;
+ unsigned char *cp, *buf_end;
+
+ if (!tty->echo_cnt)
+ return;
+
+ mutex_lock(&tty->output_lock);
+ mutex_lock(&tty->echo_lock);
+
+ space = tty_write_room(tty);
+
+ buf_end = tty->echo_buf + N_TTY_BUF_SIZE;
+ cp = tty->echo_buf + tty->echo_pos;
+ nr = tty->echo_cnt;
+ while (nr > 0) {
+ c = *cp;
+ if (c == ECHO_OP_START) {
+ unsigned char op;
+ unsigned char *opp;
+ int no_space_left = 0;
+
+ /*
+ * If the buffer byte is the start of a multi-byte
+ * operation, get the next byte, which is either the
+ * op code or a control character value.
+ */
+ opp = cp + 1;
+ if (opp == buf_end)
+ opp -= N_TTY_BUF_SIZE;
+ op = *opp;
+
+ switch (op) {
+ unsigned int num_chars, num_bs;
+
+ case ECHO_OP_ERASE_TAB:
+ if (++opp == buf_end)
+ opp -= N_TTY_BUF_SIZE;
+ num_chars = *opp;
+
+ /*
+ * Determine how many columns to go back
+ * in order to erase the tab.
+ * This depends on the number of columns
+ * used by other characters within the tab
+ * area. If this (modulo 8) count is from
+ * the start of input rather than from a
+ * previous tab, we offset by canon column.
+ * Otherwise, tab spacing is normal.
+ */
+ if (!(num_chars & 0x80))
+ num_chars += tty->canon_column;
+ num_bs = 8 - (num_chars & 7);
+
+ if (num_bs > space) {
+ no_space_left = 1;
+ break;
+ }
+ space -= num_bs;
+ while (num_bs--) {
+ tty_put_char(tty, '\b');
+ if (tty->column > 0)
+ tty->column--;
+ }
+ cp += 3;
+ nr -= 3;
+ break;
+
+ case ECHO_OP_SET_CANON_COL:
+ tty->canon_column = tty->column;
+ cp += 2;
+ nr -= 2;
+ break;
+
+ case ECHO_OP_MOVE_BACK_COL:
+ if (tty->column > 0)
+ tty->column--;
+ cp += 2;
+ nr -= 2;
+ break;
+
+ case ECHO_OP_START:
+ /* This is an escaped echo op start code */
+ if (!space) {
+ no_space_left = 1;
+ break;
+ }
+ tty_put_char(tty, ECHO_OP_START);
+ tty->column++;
+ space--;
+ cp += 2;
+ nr -= 2;
+ break;
+
+ default:
+ if (iscntrl(op)) {
+ if (L_ECHOCTL(tty)) {
+ /*
+ * Ensure there is enough space
+ * for the whole ctrl pair.
+ */
+ if (space < 2) {
+ no_space_left = 1;
+ break;
+ }
+ tty_put_char(tty, '^');
+ tty_put_char(tty, op ^ 0100);
+ tty->column += 2;
+ space -= 2;
+ } else {
+ if (!space) {
+ no_space_left = 1;
+ break;
+ }
+ tty_put_char(tty, op);
+ space--;
+ }
+ }
+ /*
+ * If above falls through, this was an
+ * undefined op.
+ */
+ cp += 2;
+ nr -= 2;
+ }
+
+ if (no_space_left)
+ break;
+ } else {
+ int retval;
+
+ retval = do_output_char(c, tty, space);
+ if (retval < 0)
+ break;
+ space -= retval;
+ cp += 1;
+ nr -= 1;
+ }
+
+ /* When end of circular buffer reached, wrap around */
+ if (cp >= buf_end)
+ cp -= N_TTY_BUF_SIZE;
+ }
+
+ if (nr == 0) {
+ tty->echo_pos = 0;
+ tty->echo_cnt = 0;
+ tty->echo_overrun = 0;
+ } else {
+ int num_processed = tty->echo_cnt - nr;
+ tty->echo_pos += num_processed;
+ tty->echo_pos &= N_TTY_BUF_SIZE - 1;
+ tty->echo_cnt = nr;
+ if (num_processed > 0)
+ tty->echo_overrun = 0;
+ }
+
+ mutex_unlock(&tty->echo_lock);
+ mutex_unlock(&tty->output_lock);
+
+ if (tty->ops->flush_chars)
+ tty->ops->flush_chars(tty);
+}
/**
- * echo_char - echo characters
+ * add_echo_byte - add a byte to the echo buffer
+ * @c: unicode byte to echo
+ * @tty: terminal device
+ *
+ * Add a character or operation byte to the echo buffer.
+ *
+ * Should be called under the echo lock to protect the echo buffer.
+ */
+
+static void add_echo_byte(unsigned char c, struct tty_struct *tty)
+{
+ int new_byte_pos;
+
+ if (tty->echo_cnt == N_TTY_BUF_SIZE) {
+ /* Circular buffer is already at capacity */
+ new_byte_pos = tty->echo_pos;
+
+ /*
+ * Since the buffer start position needs to be advanced,
+ * be sure to step by a whole operation byte group.
+ */
+ if (tty->echo_buf[tty->echo_pos] == ECHO_OP_START) {
+ if (tty->echo_buf[(tty->echo_pos + 1) &
+ (N_TTY_BUF_SIZE - 1)] ==
+ ECHO_OP_ERASE_TAB) {
+ tty->echo_pos += 3;
+ tty->echo_cnt -= 2;
+ } else {
+ tty->echo_pos += 2;
+ tty->echo_cnt -= 1;
+ }
+ } else {
+ tty->echo_pos++;
+ }
+ tty->echo_pos &= N_TTY_BUF_SIZE - 1;
+
+ tty->echo_overrun = 1;
+ } else {
+ new_byte_pos = tty->echo_pos + tty->echo_cnt;
+ new_byte_pos &= N_TTY_BUF_SIZE - 1;
+ tty->echo_cnt++;
+ }
+
+ tty->echo_buf[new_byte_pos] = c;
+}
+
+/**
+ * echo_move_back_col - add operation to move back a column
+ * @tty: terminal device
+ *
+ * Add an operation to the echo buffer to move back one column.
+ *
+ * Locking: echo_lock to protect the echo buffer
+ */
+
+static void echo_move_back_col(struct tty_struct *tty)
+{
+ mutex_lock(&tty->echo_lock);
+
+ add_echo_byte(ECHO_OP_START, tty);
+ add_echo_byte(ECHO_OP_MOVE_BACK_COL, tty);
+
+ mutex_unlock(&tty->echo_lock);
+}
+
+/**
+ * echo_set_canon_col - add operation to set the canon column
+ * @tty: terminal device
+ *
+ * Add an operation to the echo buffer to set the canon column
+ * to the current column.
+ *
+ * Locking: echo_lock to protect the echo buffer
+ */
+
+static void echo_set_canon_col(struct tty_struct *tty)
+{
+ mutex_lock(&tty->echo_lock);
+
+ add_echo_byte(ECHO_OP_START, tty);
+ add_echo_byte(ECHO_OP_SET_CANON_COL, tty);
+
+ mutex_unlock(&tty->echo_lock);
+}
+
+/**
+ * echo_erase_tab - add operation to erase a tab
+ * @num_chars: number of character columns already used
+ * @after_tab: true if num_chars starts after a previous tab
+ * @tty: terminal device
+ *
+ * Add an operation to the echo buffer to erase a tab.
+ *
+ * Called by the eraser function, which knows how many character
+ * columns have been used since either a previous tab or the start
+ * of input. This information will be used later, along with
+ * canon column (if applicable), to go back the correct number
+ * of columns.
+ *
+ * Locking: echo_lock to protect the echo buffer
+ */
+
+static void echo_erase_tab(unsigned int num_chars, int after_tab,
+ struct tty_struct *tty)
+{
+ mutex_lock(&tty->echo_lock);
+
+ add_echo_byte(ECHO_OP_START, tty);
+ add_echo_byte(ECHO_OP_ERASE_TAB, tty);
+
+ /* We only need to know this modulo 8 (tab spacing) */
+ num_chars &= 7;
+
+ /* Set the high bit as a flag if num_chars is after a previous tab */
+ if (after_tab)
+ num_chars |= 0x80;
+
+ add_echo_byte(num_chars, tty);
+
+ mutex_unlock(&tty->echo_lock);
+}
+
+/**
+ * echo_char_raw - echo a character raw
* @c: unicode byte to echo
* @tty: terminal device
*
* Echo user input back onto the screen. This must be called only when
* L_ECHO(tty) is true. Called from the driver receive_buf path.
*
- * Relies on BKL for tty column locking
+ * This variant does not treat control characters specially.
+ *
+ * Locking: echo_lock to protect the echo buffer
+ */
+
+static void echo_char_raw(unsigned char c, struct tty_struct *tty)
+{
+ mutex_lock(&tty->echo_lock);
+
+ if (c == ECHO_OP_START) {
+ add_echo_byte(ECHO_OP_START, tty);
+ add_echo_byte(ECHO_OP_START, tty);
+ } else {
+ add_echo_byte(c, tty);
+ }
+
+ mutex_unlock(&tty->echo_lock);
+}
+
+/**
+ * echo_char - echo a character
+ * @c: unicode byte to echo
+ * @tty: terminal device
+ *
+ * Echo user input back onto the screen. This must be called only when
+ * L_ECHO(tty) is true. Called from the driver receive_buf path.
+ *
+ * This variant tags control characters to be possibly echoed as
+ * as "^X" (where X is the letter representing the control char).
+ *
+ * Locking: echo_lock to protect the echo buffer
*/
static void echo_char(unsigned char c, struct tty_struct *tty)
{
- if (L_ECHOCTL(tty) && iscntrl(c) && c != '\t') {
- tty_put_char(tty, '^');
- tty_put_char(tty, c ^ 0100);
- tty->column += 2;
- } else
- opost(c, tty);
+ mutex_lock(&tty->echo_lock);
+
+ if (c == ECHO_OP_START) {
+ add_echo_byte(ECHO_OP_START, tty);
+ add_echo_byte(ECHO_OP_START, tty);
+ } else {
+ if (iscntrl(c) && c != '\t')
+ add_echo_byte(ECHO_OP_START, tty);
+ add_echo_byte(c, tty);
+ }
+
+ mutex_unlock(&tty->echo_lock);
}
/**
- * finsh_erasing - complete erase
+ * finish_erasing - complete erase
* @tty: tty doing the erase
- *
- * Relies on BKL for tty column locking
*/
+
static inline void finish_erasing(struct tty_struct *tty)
{
if (tty->erasing) {
- tty_put_char(tty, '/');
- tty->column++;
+ echo_char_raw('/', tty);
tty->erasing = 0;
}
}
@@ -460,7 +861,7 @@
* present in the stream from the driver layer. Handles the complexities
* of UTF-8 multibyte symbols.
*
- * Locking: read_lock for tty buffers, BKL for column/erasing state
+ * Locking: read_lock for tty buffers
*/
static void eraser(unsigned char c, struct tty_struct *tty)
@@ -471,7 +872,7 @@
/* FIXME: locking needed ? */
if (tty->read_head == tty->canon_head) {
- /* opost('\a', tty); */ /* what do you think? */
+ /* process_output('\a', tty); */ /* what do you think? */
return;
}
if (c == ERASE_CHAR(tty))
@@ -497,7 +898,7 @@
echo_char(KILL_CHAR(tty), tty);
/* Add a newline if ECHOK is on and ECHOKE is off. */
if (L_ECHOK(tty))
- opost('\n', tty);
+ echo_char_raw('\n', tty);
return;
}
kill_type = KILL;
@@ -533,67 +934,61 @@
if (L_ECHO(tty)) {
if (L_ECHOPRT(tty)) {
if (!tty->erasing) {
- tty_put_char(tty, '\\');
- tty->column++;
+ echo_char_raw('\\', tty);
tty->erasing = 1;
}
/* if cnt > 1, output a multi-byte character */
echo_char(c, tty);
while (--cnt > 0) {
head = (head+1) & (N_TTY_BUF_SIZE-1);
- tty_put_char(tty, tty->read_buf[head]);
+ echo_char_raw(tty->read_buf[head], tty);
+ echo_move_back_col(tty);
}
} else if (kill_type == ERASE && !L_ECHOE(tty)) {
echo_char(ERASE_CHAR(tty), tty);
} else if (c == '\t') {
- unsigned int col = tty->canon_column;
- unsigned long tail = tty->canon_head;
+ unsigned int num_chars = 0;
+ int after_tab = 0;
+ unsigned long tail = tty->read_head;
- /* Find the column of the last char. */
- while (tail != tty->read_head) {
+ /*
+ * Count the columns used for characters
+ * since the start of input or after a
+ * previous tab.
+ * This info is used to go back the correct
+ * number of columns.
+ */
+ while (tail != tty->canon_head) {
+ tail = (tail-1) & (N_TTY_BUF_SIZE-1);
c = tty->read_buf[tail];
- if (c == '\t')
- col = (col | 7) + 1;
- else if (iscntrl(c)) {
+ if (c == '\t') {
+ after_tab = 1;
+ break;
+ } else if (iscntrl(c)) {
if (L_ECHOCTL(tty))
- col += 2;
- } else if (!is_continuation(c, tty))
- col++;
- tail = (tail+1) & (N_TTY_BUF_SIZE-1);
+ num_chars += 2;
+ } else if (!is_continuation(c, tty)) {
+ num_chars++;
+ }
}
-
- /* should never happen */
- if (tty->column > 0x80000000)
- tty->column = 0;
-
- /* Now backup to that column. */
- while (tty->column > col) {
- /* Can't use opost here. */
- tty_put_char(tty, '\b');
- if (tty->column > 0)
- tty->column--;
- }
+ echo_erase_tab(num_chars, after_tab, tty);
} else {
if (iscntrl(c) && L_ECHOCTL(tty)) {
- tty_put_char(tty, '\b');
- tty_put_char(tty, ' ');
- tty_put_char(tty, '\b');
- if (tty->column > 0)
- tty->column--;
+ echo_char_raw('\b', tty);
+ echo_char_raw(' ', tty);
+ echo_char_raw('\b', tty);
}
if (!iscntrl(c) || L_ECHOCTL(tty)) {
- tty_put_char(tty, '\b');
- tty_put_char(tty, ' ');
- tty_put_char(tty, '\b');
- if (tty->column > 0)
- tty->column--;
+ echo_char_raw('\b', tty);
+ echo_char_raw(' ', tty);
+ echo_char_raw('\b', tty);
}
}
}
if (kill_type == ERASE)
break;
}
- if (tty->read_head == tty->canon_head)
+ if (tty->read_head == tty->canon_head && L_ECHO(tty))
finish_erasing(tty);
}
@@ -712,6 +1107,7 @@
static inline void n_tty_receive_char(struct tty_struct *tty, unsigned char c)
{
unsigned long flags;
+ int parmrk;
if (tty->raw) {
put_tty_queue(c, tty);
@@ -721,18 +1117,21 @@
if (I_ISTRIP(tty))
c &= 0x7f;
if (I_IUCLC(tty) && L_IEXTEN(tty))
- c=tolower(c);
+ c = tolower(c);
if (tty->stopped && !tty->flow_stopped && I_IXON(tty) &&
- ((I_IXANY(tty) && c != START_CHAR(tty) && c != STOP_CHAR(tty)) ||
- c == INTR_CHAR(tty) || c == QUIT_CHAR(tty) || c == SUSP_CHAR(tty)))
+ I_IXANY(tty) && c != START_CHAR(tty) && c != STOP_CHAR(tty) &&
+ c != INTR_CHAR(tty) && c != QUIT_CHAR(tty) && c != SUSP_CHAR(tty)) {
start_tty(tty);
+ process_echoes(tty);
+ }
if (tty->closing) {
if (I_IXON(tty)) {
- if (c == START_CHAR(tty))
+ if (c == START_CHAR(tty)) {
start_tty(tty);
- else if (c == STOP_CHAR(tty))
+ process_echoes(tty);
+ } else if (c == STOP_CHAR(tty))
stop_tty(tty);
}
return;
@@ -745,19 +1144,23 @@
* up.
*/
if (!test_bit(c, tty->process_char_map) || tty->lnext) {
- finish_erasing(tty);
tty->lnext = 0;
+ parmrk = (c == (unsigned char) '\377' && I_PARMRK(tty)) ? 1 : 0;
+ if (tty->read_cnt >= (N_TTY_BUF_SIZE - parmrk - 1)) {
+ /* beep if no space */
+ if (L_ECHO(tty))
+ process_output('\a', tty);
+ return;
+ }
if (L_ECHO(tty)) {
- if (tty->read_cnt >= N_TTY_BUF_SIZE-1) {
- tty_put_char(tty, '\a'); /* beep if no space */
- return;
- }
+ finish_erasing(tty);
/* Record the column of first canon char. */
if (tty->canon_head == tty->read_head)
- tty->canon_column = tty->column;
+ echo_set_canon_col(tty);
echo_char(c, tty);
+ process_echoes(tty);
}
- if (I_PARMRK(tty) && c == (unsigned char) '\377')
+ if (parmrk)
put_tty_queue(c, tty);
put_tty_queue(c, tty);
return;
@@ -766,6 +1169,7 @@
if (I_IXON(tty)) {
if (c == START_CHAR(tty)) {
start_tty(tty);
+ process_echoes(tty);
return;
}
if (c == STOP_CHAR(tty)) {
@@ -786,7 +1190,6 @@
if (c == SUSP_CHAR(tty)) {
send_signal:
/*
- * Echo character, and then send the signal.
* Note that we do not use isig() here because we want
* the order to be:
* 1) flush, 2) echo, 3) signal
@@ -795,8 +1198,12 @@
n_tty_flush_buffer(tty);
tty_driver_flush_buffer(tty);
}
- if (L_ECHO(tty))
+ if (I_IXON(tty))
+ start_tty(tty);
+ if (L_ECHO(tty)) {
echo_char(c, tty);
+ process_echoes(tty);
+ }
if (tty->pgrp)
kill_pgrp(tty->pgrp, signal, 1);
return;
@@ -815,6 +1222,7 @@
if (c == ERASE_CHAR(tty) || c == KILL_CHAR(tty) ||
(c == WERASE_CHAR(tty) && L_IEXTEN(tty))) {
eraser(c, tty);
+ process_echoes(tty);
return;
}
if (c == LNEXT_CHAR(tty) && L_IEXTEN(tty)) {
@@ -822,8 +1230,9 @@
if (L_ECHO(tty)) {
finish_erasing(tty);
if (L_ECHOCTL(tty)) {
- tty_put_char(tty, '^');
- tty_put_char(tty, '\b');
+ echo_char_raw('^', tty);
+ echo_char_raw('\b', tty);
+ process_echoes(tty);
}
}
return;
@@ -834,22 +1243,29 @@
finish_erasing(tty);
echo_char(c, tty);
- opost('\n', tty);
+ echo_char_raw('\n', tty);
while (tail != tty->read_head) {
echo_char(tty->read_buf[tail], tty);
tail = (tail+1) & (N_TTY_BUF_SIZE-1);
}
+ process_echoes(tty);
return;
}
if (c == '\n') {
+ if (tty->read_cnt >= N_TTY_BUF_SIZE) {
+ if (L_ECHO(tty))
+ process_output('\a', tty);
+ return;
+ }
if (L_ECHO(tty) || L_ECHONL(tty)) {
- if (tty->read_cnt >= N_TTY_BUF_SIZE-1)
- tty_put_char(tty, '\a');
- opost('\n', tty);
+ echo_char_raw('\n', tty);
+ process_echoes(tty);
}
goto handle_newline;
}
if (c == EOF_CHAR(tty)) {
+ if (tty->read_cnt >= N_TTY_BUF_SIZE)
+ return;
if (tty->canon_head != tty->read_head)
set_bit(TTY_PUSH, &tty->flags);
c = __DISABLED_CHAR;
@@ -857,22 +1273,28 @@
}
if ((c == EOL_CHAR(tty)) ||
(c == EOL2_CHAR(tty) && L_IEXTEN(tty))) {
+ parmrk = (c == (unsigned char) '\377' && I_PARMRK(tty))
+ ? 1 : 0;
+ if (tty->read_cnt >= (N_TTY_BUF_SIZE - parmrk)) {
+ if (L_ECHO(tty))
+ process_output('\a', tty);
+ return;
+ }
/*
* XXX are EOL_CHAR and EOL2_CHAR echoed?!?
*/
if (L_ECHO(tty)) {
- if (tty->read_cnt >= N_TTY_BUF_SIZE-1)
- tty_put_char(tty, '\a');
/* Record the column of first canon char. */
if (tty->canon_head == tty->read_head)
- tty->canon_column = tty->column;
+ echo_set_canon_col(tty);
echo_char(c, tty);
+ process_echoes(tty);
}
/*
* XXX does PARMRK doubling happen for
* EOL_CHAR and EOL2_CHAR?
*/
- if (I_PARMRK(tty) && c == (unsigned char) '\377')
+ if (parmrk)
put_tty_queue(c, tty);
handle_newline:
@@ -889,23 +1311,27 @@
}
}
- finish_erasing(tty);
+ parmrk = (c == (unsigned char) '\377' && I_PARMRK(tty)) ? 1 : 0;
+ if (tty->read_cnt >= (N_TTY_BUF_SIZE - parmrk - 1)) {
+ /* beep if no space */
+ if (L_ECHO(tty))
+ process_output('\a', tty);
+ return;
+ }
if (L_ECHO(tty)) {
- if (tty->read_cnt >= N_TTY_BUF_SIZE-1) {
- tty_put_char(tty, '\a'); /* beep if no space */
- return;
- }
+ finish_erasing(tty);
if (c == '\n')
- opost('\n', tty);
+ echo_char_raw('\n', tty);
else {
/* Record the column of first canon char. */
if (tty->canon_head == tty->read_head)
- tty->canon_column = tty->column;
+ echo_set_canon_col(tty);
echo_char(c, tty);
}
+ process_echoes(tty);
}
- if (I_PARMRK(tty) && c == (unsigned char) '\377')
+ if (parmrk)
put_tty_queue(c, tty);
put_tty_queue(c, tty);
@@ -923,10 +1349,11 @@
static void n_tty_write_wakeup(struct tty_struct *tty)
{
- if (tty->fasync) {
- set_bit(TTY_DO_WRITE_WAKEUP, &tty->flags);
+ /* Write out any echoed characters that are still pending */
+ process_echoes(tty);
+
+ if (tty->fasync && test_and_clear_bit(TTY_DO_WRITE_WAKEUP, &tty->flags))
kill_fasync(&tty->fasync, SIGIO, POLL_OUT);
- }
}
/**
@@ -1134,6 +1561,10 @@
free_buf(tty->read_buf);
tty->read_buf = NULL;
}
+ if (tty->echo_buf) {
+ free_buf(tty->echo_buf);
+ tty->echo_buf = NULL;
+ }
}
/**
@@ -1151,13 +1582,19 @@
if (!tty)
return -EINVAL;
- /* This one is ugly. Currently a malloc failure here can panic */
+ /* These are ugly. Currently a malloc failure here can panic */
if (!tty->read_buf) {
tty->read_buf = alloc_buf();
if (!tty->read_buf)
return -ENOMEM;
}
+ if (!tty->echo_buf) {
+ tty->echo_buf = alloc_buf();
+ if (!tty->echo_buf)
+ return -ENOMEM;
+ }
memset(tty->read_buf, 0, N_TTY_BUF_SIZE);
+ memset(tty->echo_buf, 0, N_TTY_BUF_SIZE);
reset_buffer_flags(tty);
tty->column = 0;
n_tty_set_termios(tty, NULL);
@@ -1487,16 +1924,23 @@
* @buf: userspace buffer pointer
* @nr: size of I/O
*
- * Write function of the terminal device. This is serialized with
+ * Write function of the terminal device. This is serialized with
* respect to other write callers but not to termios changes, reads
- * and other such events. We must be careful with N_TTY as the receive
- * code will echo characters, thus calling driver write methods.
+ * and other such events. Since the receive code will echo characters,
+ * thus calling driver write methods, the output_lock is used in
+ * the output processing functions called here as well as in the
+ * echo processing function to protect the column state and space
+ * left in the buffer.
*
* This code must be sure never to sleep through a hangup.
+ *
+ * Locking: output_lock to protect column state and space left
+ * (note that the process_output*() functions take this
+ * lock themselves)
*/
static ssize_t n_tty_write(struct tty_struct *tty, struct file *file,
- const unsigned char *buf, size_t nr)
+ const unsigned char *buf, size_t nr)
{
const unsigned char *b = buf;
DECLARE_WAITQUEUE(wait, current);
@@ -1510,6 +1954,9 @@
return retval;
}
+ /* Write out any echoed characters that are still pending */
+ process_echoes(tty);
+
add_wait_queue(&tty->write_wait, &wait);
while (1) {
set_current_state(TASK_INTERRUPTIBLE);
@@ -1523,7 +1970,7 @@
}
if (O_OPOST(tty) && !(test_bit(TTY_HW_COOK_OUT, &tty->flags))) {
while (nr > 0) {
- ssize_t num = opost_block(tty, b, nr);
+ ssize_t num = process_output_block(tty, b, nr);
if (num < 0) {
if (num == -EAGAIN)
break;
@@ -1535,7 +1982,7 @@
if (nr == 0)
break;
c = *b;
- if (opost(c, tty) < 0)
+ if (process_output(c, tty) < 0)
break;
b++; nr--;
}
@@ -1565,6 +2012,8 @@
break_out:
__set_current_state(TASK_RUNNING);
remove_wait_queue(&tty->write_wait, &wait);
+ if (b - buf != nr && tty->fasync)
+ set_bit(TTY_DO_WRITE_WAKEUP, &tty->flags);
return (b - buf) ? b - buf : retval;
}
@@ -1663,4 +2112,3 @@
.receive_buf = n_tty_receive_buf,
.write_wakeup = n_tty_write_wakeup
};
-
diff --git a/drivers/char/nozomi.c b/drivers/char/nozomi.c
index 9a34a19..d6102b6 100644
--- a/drivers/char/nozomi.c
+++ b/drivers/char/nozomi.c
@@ -353,6 +353,7 @@
/* This holds all information that is needed regarding a port */
struct port {
+ struct tty_port port;
u8 update_flow_control;
struct ctrl_ul ctrl_ul;
struct ctrl_dl ctrl_dl;
@@ -365,8 +366,6 @@
u8 toggle_ul;
u16 token_dl;
- struct tty_struct *tty;
- int tty_open_count;
/* mutex to ensure one access patch to this port */
struct mutex tty_sem;
wait_queue_head_t tty_wait;
@@ -788,14 +787,14 @@
* Return 1 - send buffer to card and ack.
* Return 0 - don't ack, don't send buffer to card.
*/
-static int send_data(enum port_type index, const struct nozomi *dc)
+static int send_data(enum port_type index, struct nozomi *dc)
{
u32 size = 0;
- const struct port *port = &dc->port[index];
+ struct port *port = &dc->port[index];
const u8 toggle = port->toggle_ul;
void __iomem *addr = port->ul_addr[toggle];
const u32 ul_size = port->ul_size[toggle];
- struct tty_struct *tty = port->tty;
+ struct tty_struct *tty = tty_port_tty_get(&port->port);
/* Get data from tty and place in buf for now */
size = __kfifo_get(port->fifo_ul, dc->send_buf,
@@ -803,6 +802,7 @@
if (size == 0) {
DBG4("No more data to send, disable link:");
+ tty_kref_put(tty);
return 0;
}
@@ -815,6 +815,7 @@
if (tty)
tty_wakeup(tty);
+ tty_kref_put(tty);
return 1;
}
@@ -826,7 +827,7 @@
u32 offset = 4;
struct port *port = &dc->port[index];
void __iomem *addr = port->dl_addr[port->toggle_dl];
- struct tty_struct *tty = port->tty;
+ struct tty_struct *tty = tty_port_tty_get(&port->port);
int i;
if (unlikely(!tty)) {
@@ -870,7 +871,7 @@
}
set_bit(index, &dc->flip);
-
+ tty_kref_put(tty);
return 1;
}
@@ -1276,9 +1277,15 @@
exit_handler:
spin_unlock(&dc->spin_mutex);
- for (a = 0; a < NOZOMI_MAX_PORTS; a++)
- if (test_and_clear_bit(a, &dc->flip))
- tty_flip_buffer_push(dc->port[a].tty);
+ for (a = 0; a < NOZOMI_MAX_PORTS; a++) {
+ struct tty_struct *tty;
+ if (test_and_clear_bit(a, &dc->flip)) {
+ tty = tty_port_tty_get(&dc->port[a].port);
+ if (tty)
+ tty_flip_buffer_push(tty);
+ tty_kref_put(tty);
+ }
+ }
return IRQ_HANDLED;
none:
spin_unlock(&dc->spin_mutex);
@@ -1453,12 +1460,10 @@
for (i = 0; i < MAX_PORT; i++) {
mutex_init(&dc->port[i].tty_sem);
- dc->port[i].tty_open_count = 0;
- dc->port[i].tty = NULL;
+ tty_port_init(&dc->port[i].port);
tty_register_device(ntty_driver, dc->index_start + i,
&pdev->dev);
}
-
return 0;
err_free_sbuf:
@@ -1482,14 +1487,16 @@
flush_scheduled_work();
- for (i = 0; i < MAX_PORT; ++i)
- if (dc->port[i].tty && \
- list_empty(&dc->port[i].tty->hangup_work.entry))
- tty_hangup(dc->port[i].tty);
-
+ for (i = 0; i < MAX_PORT; ++i) {
+ struct tty_struct *tty = tty_port_tty_get(&dc->port[i].port);
+ if (tty && list_empty(&tty->hangup_work.entry))
+ tty_hangup(tty);
+ tty_kref_put(tty);
+ }
+ /* Racy below - surely should wait for scheduled work to be done or
+ complete off a hangup method ? */
while (dc->open_ttys)
msleep(1);
-
for (i = dc->index_start; i < dc->index_start + MAX_PORT; ++i)
tty_unregister_device(ntty_driver, i);
}
@@ -1579,23 +1586,22 @@
if (mutex_lock_interruptible(&port->tty_sem))
return -ERESTARTSYS;
- port->tty_open_count++;
+ port->port.count++;
dc->open_ttys++;
/* Enable interrupt downlink for channel */
- if (port->tty_open_count == 1) {
+ if (port->port.count == 1) {
+ /* FIXME: is this needed now ? */
tty->low_latency = 1;
tty->driver_data = port;
- port->tty = tty;
+ tty_port_tty_set(&port->port, tty);
DBG1("open: %d", port->token_dl);
spin_lock_irqsave(&dc->spin_mutex, flags);
dc->last_ier = dc->last_ier | port->token_dl;
writew(dc->last_ier, dc->reg_ier);
spin_unlock_irqrestore(&dc->spin_mutex, flags);
}
-
mutex_unlock(&port->tty_sem);
-
return 0;
}
@@ -1606,31 +1612,30 @@
static void ntty_close(struct tty_struct *tty, struct file *file)
{
struct nozomi *dc = get_dc_by_tty(tty);
- struct port *port = tty->driver_data;
+ struct port *nport = tty->driver_data;
+ struct tty_port *port = &nport->port;
unsigned long flags;
- if (!dc || !port)
+ if (!dc || !nport)
return;
- if (mutex_lock_interruptible(&port->tty_sem))
- return;
+ /* Users cannot interrupt a close */
+ mutex_lock(&nport->tty_sem);
- if (!port->tty_open_count)
- goto exit;
+ WARN_ON(!port->count);
dc->open_ttys--;
- port->tty_open_count--;
+ port->count--;
+ tty_port_tty_set(port, NULL);
- if (port->tty_open_count == 0) {
- DBG1("close: %d", port->token_dl);
+ if (port->count == 0) {
+ DBG1("close: %d", nport->token_dl);
spin_lock_irqsave(&dc->spin_mutex, flags);
- dc->last_ier &= ~(port->token_dl);
+ dc->last_ier &= ~(nport->token_dl);
writew(dc->last_ier, dc->reg_ier);
spin_unlock_irqrestore(&dc->spin_mutex, flags);
}
-
-exit:
- mutex_unlock(&port->tty_sem);
+ mutex_unlock(&nport->tty_sem);
}
/*
@@ -1660,7 +1665,7 @@
return -EAGAIN;
}
- if (unlikely(!port->tty_open_count)) {
+ if (unlikely(!port->port.count)) {
DBG1(" ");
goto exit;
}
@@ -1710,7 +1715,7 @@
if (!mutex_trylock(&port->tty_sem))
return 0;
- if (!port->tty_open_count)
+ if (!port->port.count)
goto exit;
room = port->fifo_ul->size - __kfifo_len(port->fifo_ul);
@@ -1866,7 +1871,7 @@
goto exit_in_buffer;
}
- if (unlikely(!port->tty_open_count)) {
+ if (unlikely(!port->port.count)) {
dev_err(&dc->pdev->dev, "No tty open?\n");
rval = -ENODEV;
goto exit_in_buffer;
diff --git a/drivers/char/pcmcia/synclink_cs.c b/drivers/char/pcmcia/synclink_cs.c
index 4d64a02..dc073e1 100644
--- a/drivers/char/pcmcia/synclink_cs.c
+++ b/drivers/char/pcmcia/synclink_cs.c
@@ -138,20 +138,15 @@
*/
typedef struct _mgslpc_info {
+ struct tty_port port;
void *if_ptr; /* General purpose pointer (used by SPPP) */
int magic;
- int flags;
- int count; /* count of opens */
int line;
- unsigned short close_delay;
- unsigned short closing_wait; /* time to wait before closing */
struct mgsl_icount icount;
- struct tty_struct *tty;
int timeout;
int x_char; /* xon/xoff character */
- int blocked_open; /* # of blocked opens */
unsigned char read_status_mask;
unsigned char ignore_status_mask;
@@ -170,9 +165,6 @@
int rx_buf_count; /* total number of rx buffers */
int rx_frame_count; /* number of full rx buffers */
- wait_queue_head_t open_wait;
- wait_queue_head_t close_wait;
-
wait_queue_head_t status_event_wait_q;
wait_queue_head_t event_wait_q;
struct timer_list tx_timer; /* HDLC transmit timeout timer */
@@ -375,7 +367,7 @@
static void rx_start(MGSLPC_INFO *info);
static void rx_stop(MGSLPC_INFO *info);
-static void tx_start(MGSLPC_INFO *info);
+static void tx_start(MGSLPC_INFO *info, struct tty_struct *tty);
static void tx_stop(MGSLPC_INFO *info);
static void tx_set_idle(MGSLPC_INFO *info);
@@ -389,7 +381,8 @@
static void tx_timeout(unsigned long context);
-static int ioctl_common(MGSLPC_INFO *info, unsigned int cmd, unsigned long arg);
+static int carrier_raised(struct tty_port *port);
+static void raise_dtr_rts(struct tty_port *port);
#if SYNCLINK_GENERIC_HDLC
#define dev_to_port(D) (dev_to_hdlc(D)->priv)
@@ -410,7 +403,7 @@
static void mgslpc_add_device(MGSLPC_INFO *info);
static void mgslpc_remove_device(MGSLPC_INFO *info);
-static bool rx_get_frame(MGSLPC_INFO *info);
+static bool rx_get_frame(MGSLPC_INFO *info, struct tty_struct *tty);
static void rx_reset_buffers(MGSLPC_INFO *info);
static int rx_alloc_buffers(MGSLPC_INFO *info);
static void rx_free_buffers(MGSLPC_INFO *info);
@@ -421,7 +414,7 @@
* Bottom half interrupt handlers
*/
static void bh_handler(struct work_struct *work);
-static void bh_transmit(MGSLPC_INFO *info);
+static void bh_transmit(MGSLPC_INFO *info, struct tty_struct *tty);
static void bh_status(MGSLPC_INFO *info);
/*
@@ -432,10 +425,10 @@
unsigned int set, unsigned int clear);
static int get_stats(MGSLPC_INFO *info, struct mgsl_icount __user *user_icount);
static int get_params(MGSLPC_INFO *info, MGSL_PARAMS __user *user_params);
-static int set_params(MGSLPC_INFO *info, MGSL_PARAMS __user *new_params);
+static int set_params(MGSLPC_INFO *info, MGSL_PARAMS __user *new_params, struct tty_struct *tty);
static int get_txidle(MGSLPC_INFO *info, int __user *idle_mode);
static int set_txidle(MGSLPC_INFO *info, int idle_mode);
-static int set_txenable(MGSLPC_INFO *info, int enable);
+static int set_txenable(MGSLPC_INFO *info, int enable, struct tty_struct *tty);
static int tx_abort(MGSLPC_INFO *info);
static int set_rxenable(MGSLPC_INFO *info, int enable);
static int wait_events(MGSLPC_INFO *info, int __user *mask);
@@ -474,7 +467,7 @@
/* number of characters left in xmit buffer before we ask for more */
#define WAKEUP_CHARS 256
-static void mgslpc_change_params(MGSLPC_INFO *info);
+static void mgslpc_change_params(MGSLPC_INFO *info, struct tty_struct *tty);
static void mgslpc_wait_until_sent(struct tty_struct *tty, int timeout);
/* PCMCIA prototypes */
@@ -517,6 +510,11 @@
}
}
+static const struct tty_port_operations mgslpc_port_ops = {
+ .carrier_raised = carrier_raised,
+ .raise_dtr_rts = raise_dtr_rts
+};
+
static int mgslpc_probe(struct pcmcia_device *link)
{
MGSLPC_INFO *info;
@@ -532,12 +530,12 @@
}
info->magic = MGSLPC_MAGIC;
+ tty_port_init(&info->port);
+ info->port.ops = &mgslpc_port_ops;
INIT_WORK(&info->task, bh_handler);
info->max_frame_size = 4096;
- info->close_delay = 5*HZ/10;
- info->closing_wait = 30*HZ;
- init_waitqueue_head(&info->open_wait);
- init_waitqueue_head(&info->close_wait);
+ info->port.close_delay = 5*HZ/10;
+ info->port.closing_wait = 30*HZ;
init_waitqueue_head(&info->status_event_wait_q);
init_waitqueue_head(&info->event_wait_q);
spin_lock_init(&info->lock);
@@ -784,7 +782,7 @@
spin_lock_irqsave(&info->lock,flags);
if (!info->tx_enabled)
- tx_start(info);
+ tx_start(info, tty);
spin_unlock_irqrestore(&info->lock,flags);
}
@@ -823,6 +821,7 @@
static void bh_handler(struct work_struct *work)
{
MGSLPC_INFO *info = container_of(work, MGSLPC_INFO, task);
+ struct tty_struct *tty;
int action;
if (!info)
@@ -833,6 +832,7 @@
__FILE__,__LINE__,info->device_name);
info->bh_running = true;
+ tty = tty_port_tty_get(&info->port);
while((action = bh_action(info)) != 0) {
@@ -844,10 +844,10 @@
switch (action) {
case BH_RECEIVE:
- while(rx_get_frame(info));
+ while(rx_get_frame(info, tty));
break;
case BH_TRANSMIT:
- bh_transmit(info);
+ bh_transmit(info, tty);
break;
case BH_STATUS:
bh_status(info);
@@ -859,14 +859,14 @@
}
}
+ tty_kref_put(tty);
if (debug_level >= DEBUG_LEVEL_BH)
printk( "%s(%d):bh_handler(%s) exit\n",
__FILE__,__LINE__,info->device_name);
}
-static void bh_transmit(MGSLPC_INFO *info)
+static void bh_transmit(MGSLPC_INFO *info, struct tty_struct *tty)
{
- struct tty_struct *tty = info->tty;
if (debug_level >= DEBUG_LEVEL_BH)
printk("bh_transmit() entry on %s\n", info->device_name);
@@ -945,12 +945,11 @@
issue_command(info, CHA, CMD_RXFIFO);
}
-static void rx_ready_async(MGSLPC_INFO *info, int tcd)
+static void rx_ready_async(MGSLPC_INFO *info, int tcd, struct tty_struct *tty)
{
unsigned char data, status, flag;
int fifo_count;
int work = 0;
- struct tty_struct *tty = info->tty;
struct mgsl_icount *icount = &info->icount;
if (tcd) {
@@ -1013,7 +1012,7 @@
}
-static void tx_done(MGSLPC_INFO *info)
+static void tx_done(MGSLPC_INFO *info, struct tty_struct *tty)
{
if (!info->tx_active)
return;
@@ -1042,7 +1041,7 @@
else
#endif
{
- if (info->tty->stopped || info->tty->hw_stopped) {
+ if (tty->stopped || tty->hw_stopped) {
tx_stop(info);
return;
}
@@ -1050,7 +1049,7 @@
}
}
-static void tx_ready(MGSLPC_INFO *info)
+static void tx_ready(MGSLPC_INFO *info, struct tty_struct *tty)
{
unsigned char fifo_count = 32;
int c;
@@ -1062,7 +1061,7 @@
if (!info->tx_active)
return;
} else {
- if (info->tty->stopped || info->tty->hw_stopped) {
+ if (tty->stopped || tty->hw_stopped) {
tx_stop(info);
return;
}
@@ -1099,7 +1098,7 @@
}
}
-static void cts_change(MGSLPC_INFO *info)
+static void cts_change(MGSLPC_INFO *info, struct tty_struct *tty)
{
get_signals(info);
if ((info->cts_chkcount)++ >= IO_PIN_SHUTDOWN_LIMIT)
@@ -1112,14 +1111,14 @@
wake_up_interruptible(&info->status_event_wait_q);
wake_up_interruptible(&info->event_wait_q);
- if (info->flags & ASYNC_CTS_FLOW) {
- if (info->tty->hw_stopped) {
+ if (info->port.flags & ASYNC_CTS_FLOW) {
+ if (tty->hw_stopped) {
if (info->serial_signals & SerialSignal_CTS) {
if (debug_level >= DEBUG_LEVEL_ISR)
printk("CTS tx start...");
- if (info->tty)
- info->tty->hw_stopped = 0;
- tx_start(info);
+ if (tty)
+ tty->hw_stopped = 0;
+ tx_start(info, tty);
info->pending_bh |= BH_TRANSMIT;
return;
}
@@ -1127,8 +1126,8 @@
if (!(info->serial_signals & SerialSignal_CTS)) {
if (debug_level >= DEBUG_LEVEL_ISR)
printk("CTS tx stop...");
- if (info->tty)
- info->tty->hw_stopped = 1;
+ if (tty)
+ tty->hw_stopped = 1;
tx_stop(info);
}
}
@@ -1136,7 +1135,7 @@
info->pending_bh |= BH_STATUS;
}
-static void dcd_change(MGSLPC_INFO *info)
+static void dcd_change(MGSLPC_INFO *info, struct tty_struct *tty)
{
get_signals(info);
if ((info->dcd_chkcount)++ >= IO_PIN_SHUTDOWN_LIMIT)
@@ -1158,17 +1157,17 @@
wake_up_interruptible(&info->status_event_wait_q);
wake_up_interruptible(&info->event_wait_q);
- if (info->flags & ASYNC_CHECK_CD) {
+ if (info->port.flags & ASYNC_CHECK_CD) {
if (debug_level >= DEBUG_LEVEL_ISR)
printk("%s CD now %s...", info->device_name,
(info->serial_signals & SerialSignal_DCD) ? "on" : "off");
if (info->serial_signals & SerialSignal_DCD)
- wake_up_interruptible(&info->open_wait);
+ wake_up_interruptible(&info->port.open_wait);
else {
if (debug_level >= DEBUG_LEVEL_ISR)
printk("doing serial hangup...");
- if (info->tty)
- tty_hangup(info->tty);
+ if (tty)
+ tty_hangup(tty);
}
}
info->pending_bh |= BH_STATUS;
@@ -1214,6 +1213,7 @@
static irqreturn_t mgslpc_isr(int dummy, void *dev_id)
{
MGSLPC_INFO *info = dev_id;
+ struct tty_struct *tty;
unsigned short isr;
unsigned char gis, pis;
int count=0;
@@ -1224,6 +1224,8 @@
if (!(info->p_dev->_locked))
return IRQ_HANDLED;
+ tty = tty_port_tty_get(&info->port);
+
spin_lock(&info->lock);
while ((gis = read_reg(info, CHA + GIS))) {
@@ -1239,9 +1241,9 @@
if (gis & (BIT1 + BIT0)) {
isr = read_reg16(info, CHB + ISR);
if (isr & IRQ_DCD)
- dcd_change(info);
+ dcd_change(info, tty);
if (isr & IRQ_CTS)
- cts_change(info);
+ cts_change(info, tty);
}
if (gis & (BIT3 + BIT2))
{
@@ -1258,8 +1260,8 @@
}
if (isr & IRQ_BREAK_ON) {
info->icount.brk++;
- if (info->flags & ASYNC_SAK)
- do_SAK(info->tty);
+ if (info->port.flags & ASYNC_SAK)
+ do_SAK(tty);
}
if (isr & IRQ_RXTIME) {
issue_command(info, CHA, CMD_RXFIFO_READ);
@@ -1268,7 +1270,7 @@
if (info->params.mode == MGSL_MODE_HDLC)
rx_ready_hdlc(info, isr & IRQ_RXEOM);
else
- rx_ready_async(info, isr & IRQ_RXEOM);
+ rx_ready_async(info, isr & IRQ_RXEOM, tty);
}
/* transmit IRQs */
@@ -1277,14 +1279,14 @@
info->icount.txabort++;
else
info->icount.txunder++;
- tx_done(info);
+ tx_done(info, tty);
}
else if (isr & IRQ_ALLSENT) {
info->icount.txok++;
- tx_done(info);
+ tx_done(info, tty);
}
else if (isr & IRQ_TXFIFO)
- tx_ready(info);
+ tx_ready(info, tty);
}
if (gis & BIT7) {
pis = read_reg(info, CHA + PIS);
@@ -1308,6 +1310,7 @@
}
spin_unlock(&info->lock);
+ tty_kref_put(tty);
if (debug_level >= DEBUG_LEVEL_ISR)
printk("%s(%d):mgslpc_isr(%d)exit.\n",
@@ -1318,14 +1321,14 @@
/* Initialize and start device.
*/
-static int startup(MGSLPC_INFO * info)
+static int startup(MGSLPC_INFO * info, struct tty_struct *tty)
{
int retval = 0;
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):startup(%s)\n",__FILE__,__LINE__,info->device_name);
- if (info->flags & ASYNC_INITIALIZED)
+ if (info->port.flags & ASYNC_INITIALIZED)
return 0;
if (!info->tx_buf) {
@@ -1352,30 +1355,30 @@
retval = adapter_test(info);
if ( retval ) {
- if (capable(CAP_SYS_ADMIN) && info->tty)
- set_bit(TTY_IO_ERROR, &info->tty->flags);
+ if (capable(CAP_SYS_ADMIN) && tty)
+ set_bit(TTY_IO_ERROR, &tty->flags);
release_resources(info);
return retval;
}
/* program hardware for current parameters */
- mgslpc_change_params(info);
+ mgslpc_change_params(info, tty);
- if (info->tty)
- clear_bit(TTY_IO_ERROR, &info->tty->flags);
+ if (tty)
+ clear_bit(TTY_IO_ERROR, &tty->flags);
- info->flags |= ASYNC_INITIALIZED;
+ info->port.flags |= ASYNC_INITIALIZED;
return 0;
}
/* Called by mgslpc_close() and mgslpc_hangup() to shutdown hardware
*/
-static void shutdown(MGSLPC_INFO * info)
+static void shutdown(MGSLPC_INFO * info, struct tty_struct *tty)
{
unsigned long flags;
- if (!(info->flags & ASYNC_INITIALIZED))
+ if (!(info->port.flags & ASYNC_INITIALIZED))
return;
if (debug_level >= DEBUG_LEVEL_INFO)
@@ -1402,7 +1405,7 @@
/* TODO:disable interrupts instead of reset to preserve signal states */
reset_device(info);
- if (!info->tty || info->tty->termios->c_cflag & HUPCL) {
+ if (!tty || tty->termios->c_cflag & HUPCL) {
info->serial_signals &= ~(SerialSignal_DTR + SerialSignal_RTS);
set_signals(info);
}
@@ -1411,13 +1414,13 @@
release_resources(info);
- if (info->tty)
- set_bit(TTY_IO_ERROR, &info->tty->flags);
+ if (tty)
+ set_bit(TTY_IO_ERROR, &tty->flags);
- info->flags &= ~ASYNC_INITIALIZED;
+ info->port.flags &= ~ASYNC_INITIALIZED;
}
-static void mgslpc_program_hw(MGSLPC_INFO *info)
+static void mgslpc_program_hw(MGSLPC_INFO *info, struct tty_struct *tty)
{
unsigned long flags;
@@ -1443,7 +1446,7 @@
port_irq_enable(info, (unsigned char) PVR_DSR | PVR_RI);
get_signals(info);
- if (info->netcount || info->tty->termios->c_cflag & CREAD)
+ if (info->netcount || (tty && (tty->termios->c_cflag & CREAD)))
rx_start(info);
spin_unlock_irqrestore(&info->lock,flags);
@@ -1451,19 +1454,19 @@
/* Reconfigure adapter based on new parameters
*/
-static void mgslpc_change_params(MGSLPC_INFO *info)
+static void mgslpc_change_params(MGSLPC_INFO *info, struct tty_struct *tty)
{
unsigned cflag;
int bits_per_char;
- if (!info->tty || !info->tty->termios)
+ if (!tty || !tty->termios)
return;
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):mgslpc_change_params(%s)\n",
__FILE__,__LINE__, info->device_name );
- cflag = info->tty->termios->c_cflag;
+ cflag = tty->termios->c_cflag;
/* if B0 rate (hangup) specified then negate DTR and RTS */
/* otherwise assert DTR and RTS */
@@ -1510,7 +1513,7 @@
* current data rate.
*/
if (info->params.data_rate <= 460800) {
- info->params.data_rate = tty_get_baud_rate(info->tty);
+ info->params.data_rate = tty_get_baud_rate(tty);
}
if ( info->params.data_rate ) {
@@ -1520,24 +1523,24 @@
info->timeout += HZ/50; /* Add .02 seconds of slop */
if (cflag & CRTSCTS)
- info->flags |= ASYNC_CTS_FLOW;
+ info->port.flags |= ASYNC_CTS_FLOW;
else
- info->flags &= ~ASYNC_CTS_FLOW;
+ info->port.flags &= ~ASYNC_CTS_FLOW;
if (cflag & CLOCAL)
- info->flags &= ~ASYNC_CHECK_CD;
+ info->port.flags &= ~ASYNC_CHECK_CD;
else
- info->flags |= ASYNC_CHECK_CD;
+ info->port.flags |= ASYNC_CHECK_CD;
/* process tty input control flags */
info->read_status_mask = 0;
- if (I_INPCK(info->tty))
+ if (I_INPCK(tty))
info->read_status_mask |= BIT7 | BIT6;
- if (I_IGNPAR(info->tty))
+ if (I_IGNPAR(tty))
info->ignore_status_mask |= BIT7 | BIT6;
- mgslpc_program_hw(info);
+ mgslpc_program_hw(info, tty);
}
/* Add a character to the transmit buffer
@@ -1597,7 +1600,7 @@
spin_lock_irqsave(&info->lock,flags);
if (!info->tx_active)
- tx_start(info);
+ tx_start(info, tty);
spin_unlock_irqrestore(&info->lock,flags);
}
@@ -1659,7 +1662,7 @@
if (info->tx_count && !tty->stopped && !tty->hw_stopped) {
spin_lock_irqsave(&info->lock,flags);
if (!info->tx_active)
- tx_start(info);
+ tx_start(info, tty);
spin_unlock_irqrestore(&info->lock,flags);
}
cleanup:
@@ -1764,7 +1767,7 @@
if (ch) {
spin_lock_irqsave(&info->lock,flags);
if (!info->tx_enabled)
- tx_start(info);
+ tx_start(info, tty);
spin_unlock_irqrestore(&info->lock,flags);
}
}
@@ -1862,7 +1865,7 @@
*
* Returns: 0 if success, otherwise error code
*/
-static int set_params(MGSLPC_INFO * info, MGSL_PARAMS __user *new_params)
+static int set_params(MGSLPC_INFO * info, MGSL_PARAMS __user *new_params, struct tty_struct *tty)
{
unsigned long flags;
MGSL_PARAMS tmp_params;
@@ -1883,7 +1886,7 @@
memcpy(&info->params,&tmp_params,sizeof(MGSL_PARAMS));
spin_unlock_irqrestore(&info->lock,flags);
- mgslpc_change_params(info);
+ mgslpc_change_params(info, tty);
return 0;
}
@@ -1944,7 +1947,7 @@
return 0;
}
-static int set_txenable(MGSLPC_INFO * info, int enable)
+static int set_txenable(MGSLPC_INFO * info, int enable, struct tty_struct *tty)
{
unsigned long flags;
@@ -1954,7 +1957,7 @@
spin_lock_irqsave(&info->lock,flags);
if (enable) {
if (!info->tx_enabled)
- tx_start(info);
+ tx_start(info, tty);
} else {
if (info->tx_enabled)
tx_stop(info);
@@ -2263,6 +2266,11 @@
unsigned int cmd, unsigned long arg)
{
MGSLPC_INFO * info = (MGSLPC_INFO *)tty->driver_data;
+ int error;
+ struct mgsl_icount cnow; /* kernel counter temps */
+ struct serial_icounter_struct __user *p_cuser; /* user space */
+ void __user *argp = (void __user *)arg;
+ unsigned long flags;
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):mgslpc_ioctl %s cmd=%08X\n", __FILE__,__LINE__,
@@ -2277,22 +2285,11 @@
return -EIO;
}
- return ioctl_common(info, cmd, arg);
-}
-
-static int ioctl_common(MGSLPC_INFO *info, unsigned int cmd, unsigned long arg)
-{
- int error;
- struct mgsl_icount cnow; /* kernel counter temps */
- struct serial_icounter_struct __user *p_cuser; /* user space */
- void __user *argp = (void __user *)arg;
- unsigned long flags;
-
switch (cmd) {
case MGSL_IOCGPARAMS:
return get_params(info, argp);
case MGSL_IOCSPARAMS:
- return set_params(info, argp);
+ return set_params(info, argp, tty);
case MGSL_IOCGTXIDLE:
return get_txidle(info, argp);
case MGSL_IOCSTXIDLE:
@@ -2302,7 +2299,7 @@
case MGSL_IOCSIF:
return set_interface(info,(int)arg);
case MGSL_IOCTXENABLE:
- return set_txenable(info,(int)arg);
+ return set_txenable(info,(int)arg, tty);
case MGSL_IOCRXENABLE:
return set_rxenable(info,(int)arg);
case MGSL_IOCTXABORT:
@@ -2369,7 +2366,7 @@
== RELEVANT_IFLAG(old_termios->c_iflag)))
return;
- mgslpc_change_params(info);
+ mgslpc_change_params(info, tty);
/* Handle transition to B0 status */
if (old_termios->c_cflag & CBAUD &&
@@ -2404,81 +2401,34 @@
static void mgslpc_close(struct tty_struct *tty, struct file * filp)
{
MGSLPC_INFO * info = (MGSLPC_INFO *)tty->driver_data;
+ struct tty_port *port = &info->port;
if (mgslpc_paranoia_check(info, tty->name, "mgslpc_close"))
return;
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):mgslpc_close(%s) entry, count=%d\n",
- __FILE__,__LINE__, info->device_name, info->count);
+ __FILE__,__LINE__, info->device_name, port->count);
- if (!info->count)
- return;
+ WARN_ON(!port->count);
- if (tty_hung_up_p(filp))
+ if (tty_port_close_start(port, tty, filp) == 0)
goto cleanup;
- if ((tty->count == 1) && (info->count != 1)) {
- /*
- * tty->count is 1 and the tty structure will be freed.
- * info->count should be one in this case.
- * if it's not, correct it so that the port is shutdown.
- */
- printk("mgslpc_close: bad refcount; tty->count is 1, "
- "info->count is %d\n", info->count);
- info->count = 1;
- }
-
- info->count--;
-
- /* if at least one open remaining, leave hardware active */
- if (info->count)
- goto cleanup;
-
- info->flags |= ASYNC_CLOSING;
-
- /* set tty->closing to notify line discipline to
- * only process XON/XOFF characters. Only the N_TTY
- * discipline appears to use this (ppp does not).
- */
- tty->closing = 1;
-
- /* wait for transmit data to clear all layers */
-
- if (info->closing_wait != ASYNC_CLOSING_WAIT_NONE) {
- if (debug_level >= DEBUG_LEVEL_INFO)
- printk("%s(%d):mgslpc_close(%s) calling tty_wait_until_sent\n",
- __FILE__,__LINE__, info->device_name );
- tty_wait_until_sent(tty, info->closing_wait);
- }
-
- if (info->flags & ASYNC_INITIALIZED)
+ if (port->flags & ASYNC_INITIALIZED)
mgslpc_wait_until_sent(tty, info->timeout);
mgslpc_flush_buffer(tty);
tty_ldisc_flush(tty);
-
- shutdown(info);
-
- tty->closing = 0;
- info->tty = NULL;
-
- if (info->blocked_open) {
- if (info->close_delay) {
- msleep_interruptible(jiffies_to_msecs(info->close_delay));
- }
- wake_up_interruptible(&info->open_wait);
- }
-
- info->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
-
- wake_up_interruptible(&info->close_wait);
-
+ shutdown(info, tty);
+
+ tty_port_close_end(port, tty);
+ tty_port_tty_set(port, NULL);
cleanup:
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):mgslpc_close(%s) exit, count=%d\n", __FILE__,__LINE__,
- tty->driver->name, info->count);
+ tty->driver->name, port->count);
}
/* Wait until the transmitter is empty.
@@ -2498,7 +2448,7 @@
if (mgslpc_paranoia_check(info, tty->name, "mgslpc_wait_until_sent"))
return;
- if (!(info->flags & ASYNC_INITIALIZED))
+ if (!(info->port.flags & ASYNC_INITIALIZED))
goto exit;
orig_jiffies = jiffies;
@@ -2559,120 +2509,40 @@
return;
mgslpc_flush_buffer(tty);
- shutdown(info);
-
- info->count = 0;
- info->flags &= ~ASYNC_NORMAL_ACTIVE;
- info->tty = NULL;
-
- wake_up_interruptible(&info->open_wait);
+ shutdown(info, tty);
+ tty_port_hangup(&info->port);
}
-/* Block the current process until the specified port
- * is ready to be opened.
- */
-static int block_til_ready(struct tty_struct *tty, struct file *filp,
- MGSLPC_INFO *info)
+static int carrier_raised(struct tty_port *port)
{
- DECLARE_WAITQUEUE(wait, current);
- int retval;
- bool do_clocal = false;
- bool extra_count = false;
- unsigned long flags;
+ MGSLPC_INFO *info = container_of(port, MGSLPC_INFO, port);
+ unsigned long flags;
- if (debug_level >= DEBUG_LEVEL_INFO)
- printk("%s(%d):block_til_ready on %s\n",
- __FILE__,__LINE__, tty->driver->name );
+ spin_lock_irqsave(&info->lock,flags);
+ get_signals(info);
+ spin_unlock_irqrestore(&info->lock,flags);
- if (filp->f_flags & O_NONBLOCK || tty->flags & (1 << TTY_IO_ERROR)){
- /* nonblock mode is set or port is not enabled */
- /* just verify that callout device is not active */
- info->flags |= ASYNC_NORMAL_ACTIVE;
- return 0;
- }
-
- if (tty->termios->c_cflag & CLOCAL)
- do_clocal = true;
-
- /* Wait for carrier detect and the line to become
- * free (i.e., not in use by the callout). While we are in
- * this loop, info->count is dropped by one, so that
- * mgslpc_close() knows when to free things. We restore it upon
- * exit, either normal or abnormal.
- */
-
- retval = 0;
- add_wait_queue(&info->open_wait, &wait);
-
- if (debug_level >= DEBUG_LEVEL_INFO)
- printk("%s(%d):block_til_ready before block on %s count=%d\n",
- __FILE__,__LINE__, tty->driver->name, info->count );
-
- spin_lock_irqsave(&info->lock, flags);
- if (!tty_hung_up_p(filp)) {
- extra_count = true;
- info->count--;
- }
- spin_unlock_irqrestore(&info->lock, flags);
- info->blocked_open++;
-
- while (1) {
- if ((tty->termios->c_cflag & CBAUD)) {
- spin_lock_irqsave(&info->lock,flags);
- info->serial_signals |= SerialSignal_RTS + SerialSignal_DTR;
- set_signals(info);
- spin_unlock_irqrestore(&info->lock,flags);
- }
-
- set_current_state(TASK_INTERRUPTIBLE);
-
- if (tty_hung_up_p(filp) || !(info->flags & ASYNC_INITIALIZED)){
- retval = (info->flags & ASYNC_HUP_NOTIFY) ?
- -EAGAIN : -ERESTARTSYS;
- break;
- }
-
- spin_lock_irqsave(&info->lock,flags);
- get_signals(info);
- spin_unlock_irqrestore(&info->lock,flags);
-
- if (!(info->flags & ASYNC_CLOSING) &&
- (do_clocal || (info->serial_signals & SerialSignal_DCD)) ) {
- break;
- }
-
- if (signal_pending(current)) {
- retval = -ERESTARTSYS;
- break;
- }
-
- if (debug_level >= DEBUG_LEVEL_INFO)
- printk("%s(%d):block_til_ready blocking on %s count=%d\n",
- __FILE__,__LINE__, tty->driver->name, info->count );
-
- schedule();
- }
-
- set_current_state(TASK_RUNNING);
- remove_wait_queue(&info->open_wait, &wait);
-
- if (extra_count)
- info->count++;
- info->blocked_open--;
-
- if (debug_level >= DEBUG_LEVEL_INFO)
- printk("%s(%d):block_til_ready after blocking on %s count=%d\n",
- __FILE__,__LINE__, tty->driver->name, info->count );
-
- if (!retval)
- info->flags |= ASYNC_NORMAL_ACTIVE;
-
- return retval;
+ if (info->serial_signals & SerialSignal_DCD)
+ return 1;
+ return 0;
}
+static void raise_dtr_rts(struct tty_port *port)
+{
+ MGSLPC_INFO *info = container_of(port, MGSLPC_INFO, port);
+ unsigned long flags;
+
+ spin_lock_irqsave(&info->lock,flags);
+ info->serial_signals |= SerialSignal_RTS + SerialSignal_DTR;
+ set_signals(info);
+ spin_unlock_irqrestore(&info->lock,flags);
+}
+
+
static int mgslpc_open(struct tty_struct *tty, struct file * filp)
{
MGSLPC_INFO *info;
+ struct tty_port *port;
int retval, line;
unsigned long flags;
@@ -2691,23 +2561,24 @@
if (mgslpc_paranoia_check(info, tty->name, "mgslpc_open"))
return -ENODEV;
+ port = &info->port;
tty->driver_data = info;
- info->tty = tty;
+ tty_port_tty_set(port, tty);
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):mgslpc_open(%s), old ref count = %d\n",
- __FILE__,__LINE__,tty->driver->name, info->count);
+ __FILE__,__LINE__,tty->driver->name, port->count);
/* If port is closing, signal caller to try again */
- if (tty_hung_up_p(filp) || info->flags & ASYNC_CLOSING){
- if (info->flags & ASYNC_CLOSING)
- interruptible_sleep_on(&info->close_wait);
- retval = ((info->flags & ASYNC_HUP_NOTIFY) ?
+ if (tty_hung_up_p(filp) || port->flags & ASYNC_CLOSING){
+ if (port->flags & ASYNC_CLOSING)
+ interruptible_sleep_on(&port->close_wait);
+ retval = ((port->flags & ASYNC_HUP_NOTIFY) ?
-EAGAIN : -ERESTARTSYS);
goto cleanup;
}
- info->tty->low_latency = (info->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
+ tty->low_latency = (port->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
spin_lock_irqsave(&info->netlock, flags);
if (info->netcount) {
@@ -2715,17 +2586,19 @@
spin_unlock_irqrestore(&info->netlock, flags);
goto cleanup;
}
- info->count++;
+ spin_lock(&port->lock);
+ port->count++;
+ spin_unlock(&port->lock);
spin_unlock_irqrestore(&info->netlock, flags);
- if (info->count == 1) {
+ if (port->count == 1) {
/* 1st open on this device, init hardware */
- retval = startup(info);
+ retval = startup(info, tty);
if (retval < 0)
goto cleanup;
}
- retval = block_til_ready(tty, filp, info);
+ retval = tty_port_block_til_ready(&info->port, tty, filp);
if (retval) {
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):block_til_ready(%s) returned %d\n",
@@ -2739,13 +2612,6 @@
retval = 0;
cleanup:
- if (retval) {
- if (tty->count == 1)
- info->tty = NULL; /* tty layer will release tty struct */
- if(info->count)
- info->count--;
- }
-
return retval;
}
@@ -3500,7 +3366,7 @@
info->rx_enabled = true;
}
-static void tx_start(MGSLPC_INFO *info)
+static void tx_start(MGSLPC_INFO *info, struct tty_struct *tty)
{
if (debug_level >= DEBUG_LEVEL_ISR)
printk("%s(%d):tx_start(%s)\n",
@@ -3524,11 +3390,11 @@
if (info->params.mode == MGSL_MODE_ASYNC) {
if (!info->tx_active) {
info->tx_active = true;
- tx_ready(info);
+ tx_ready(info, tty);
}
} else {
info->tx_active = true;
- tx_ready(info);
+ tx_ready(info, tty);
mod_timer(&info->tx_timer, jiffies +
msecs_to_jiffies(5000));
}
@@ -3849,13 +3715,12 @@
*
* Returns true if frame returned, otherwise false
*/
-static bool rx_get_frame(MGSLPC_INFO *info)
+static bool rx_get_frame(MGSLPC_INFO *info, struct tty_struct *tty)
{
unsigned short status;
RXBUF *buf;
unsigned int framesize = 0;
unsigned long flags;
- struct tty_struct *tty = info->tty;
bool return_frame = false;
if (info->rx_frame_count == 0)
@@ -4075,7 +3940,11 @@
hdlcdev_tx_done(info);
else
#endif
- bh_transmit(info);
+ {
+ struct tty_struct *tty = tty_port_tty_get(&info->port);
+ bh_transmit(info, tty);
+ tty_kref_put(tty);
+ }
}
#if SYNCLINK_GENERIC_HDLC
@@ -4094,11 +3963,12 @@
unsigned short parity)
{
MGSLPC_INFO *info = dev_to_port(dev);
+ struct tty_struct *tty;
unsigned char new_encoding;
unsigned short new_crctype;
/* return error if TTY interface open */
- if (info->count)
+ if (info->port.count)
return -EBUSY;
switch (encoding)
@@ -4123,8 +3993,11 @@
info->params.crc_type = new_crctype;
/* if network interface up, reprogram hardware */
- if (info->netcount)
- mgslpc_program_hw(info);
+ if (info->netcount) {
+ tty = tty_port_tty_get(&info->port);
+ mgslpc_program_hw(info, tty);
+ tty_kref_put(tty);
+ }
return 0;
}
@@ -4165,8 +4038,11 @@
/* start hardware transmitter if necessary */
spin_lock_irqsave(&info->lock,flags);
- if (!info->tx_active)
- tx_start(info);
+ if (!info->tx_active) {
+ struct tty_struct *tty = tty_port_tty_get(&info->port);
+ tx_start(info, tty);
+ tty_kref_put(tty);
+ }
spin_unlock_irqrestore(&info->lock,flags);
return 0;
@@ -4183,6 +4059,7 @@
static int hdlcdev_open(struct net_device *dev)
{
MGSLPC_INFO *info = dev_to_port(dev);
+ struct tty_struct *tty;
int rc;
unsigned long flags;
@@ -4195,7 +4072,7 @@
/* arbitrate between network and tty opens */
spin_lock_irqsave(&info->netlock, flags);
- if (info->count != 0 || info->netcount != 0) {
+ if (info->port.count != 0 || info->netcount != 0) {
printk(KERN_WARNING "%s: hdlc_open returning busy\n", dev->name);
spin_unlock_irqrestore(&info->netlock, flags);
return -EBUSY;
@@ -4203,17 +4080,19 @@
info->netcount=1;
spin_unlock_irqrestore(&info->netlock, flags);
+ tty = tty_port_tty_get(&info->port);
/* claim resources and init adapter */
- if ((rc = startup(info)) != 0) {
+ if ((rc = startup(info, tty)) != 0) {
+ tty_kref_put(tty);
spin_lock_irqsave(&info->netlock, flags);
info->netcount=0;
spin_unlock_irqrestore(&info->netlock, flags);
return rc;
}
-
/* assert DTR and RTS, apply hardware settings */
info->serial_signals |= SerialSignal_RTS + SerialSignal_DTR;
- mgslpc_program_hw(info);
+ mgslpc_program_hw(info, tty);
+ tty_kref_put(tty);
/* enable network layer transmit */
dev->trans_start = jiffies;
@@ -4241,6 +4120,7 @@
static int hdlcdev_close(struct net_device *dev)
{
MGSLPC_INFO *info = dev_to_port(dev);
+ struct tty_struct *tty = tty_port_tty_get(&info->port);
unsigned long flags;
if (debug_level >= DEBUG_LEVEL_INFO)
@@ -4249,8 +4129,8 @@
netif_stop_queue(dev);
/* shutdown adapter and release resources */
- shutdown(info);
-
+ shutdown(info, tty);
+ tty_kref_put(tty);
hdlc_close(dev);
spin_lock_irqsave(&info->netlock, flags);
@@ -4281,7 +4161,7 @@
printk("%s:hdlcdev_ioctl(%s)\n",__FILE__,dev->name);
/* return error if TTY interface open */
- if (info->count)
+ if (info->port.count)
return -EBUSY;
if (cmd != SIOCWANDEV)
@@ -4354,8 +4234,11 @@
info->params.clock_speed = 0;
/* if network interface up, reprogram hardware */
- if (info->netcount)
- mgslpc_program_hw(info);
+ if (info->netcount) {
+ struct tty_struct *tty = tty_port_tty_get(&info->port);
+ mgslpc_program_hw(info, tty);
+ tty_kref_put(tty);
+ }
return 0;
default:
diff --git a/drivers/char/pty.c b/drivers/char/pty.c
index 6d45827..112a6ba 100644
--- a/drivers/char/pty.c
+++ b/drivers/char/pty.c
@@ -5,8 +5,6 @@
*
* Added support for a Unix98-style ptmx device.
* -- C. Scott Ananian <cananian@alumni.princeton.edu>, 14-Jan-1998
- * Added TTY_DO_WRITE_WAKEUP to enable n_tty to send POLL_OUT to
- * waiting writers -- Sapan Bhatia <sapan@corewars.org>
*
* When reading this code see also fs/devpts. In particular note that the
* driver_data field is used by the devpts side as a binding to the devpts
@@ -217,7 +215,6 @@
clear_bit(TTY_OTHER_CLOSED, &tty->link->flags);
set_bit(TTY_THROTTLED, &tty->flags);
- set_bit(TTY_DO_WRITE_WAKEUP, &tty->flags);
retval = 0;
out:
return retval;
@@ -230,6 +227,55 @@
tty->termios->c_cflag |= (CS8 | CREAD);
}
+/**
+ * pty_do_resize - resize event
+ * @tty: tty being resized
+ * @real_tty: real tty (not the same as tty if using a pty/tty pair)
+ * @rows: rows (character)
+ * @cols: cols (character)
+ *
+ * Update the termios variables and send the neccessary signals to
+ * peform a terminal resize correctly
+ */
+
+int pty_resize(struct tty_struct *tty, struct winsize *ws)
+{
+ struct pid *pgrp, *rpgrp;
+ unsigned long flags;
+ struct tty_struct *pty = tty->link;
+
+ /* For a PTY we need to lock the tty side */
+ mutex_lock(&tty->termios_mutex);
+ if (!memcmp(ws, &tty->winsize, sizeof(*ws)))
+ goto done;
+
+ /* Get the PID values and reference them so we can
+ avoid holding the tty ctrl lock while sending signals.
+ We need to lock these individually however. */
+
+ spin_lock_irqsave(&tty->ctrl_lock, flags);
+ pgrp = get_pid(tty->pgrp);
+ spin_unlock_irqrestore(&tty->ctrl_lock, flags);
+
+ spin_lock_irqsave(&pty->ctrl_lock, flags);
+ rpgrp = get_pid(pty->pgrp);
+ spin_unlock_irqrestore(&pty->ctrl_lock, flags);
+
+ if (pgrp)
+ kill_pgrp(pgrp, SIGWINCH, 1);
+ if (rpgrp != pgrp && rpgrp)
+ kill_pgrp(rpgrp, SIGWINCH, 1);
+
+ put_pid(pgrp);
+ put_pid(rpgrp);
+
+ tty->winsize = *ws;
+ pty->winsize = *ws; /* Never used so will go away soon */
+done:
+ mutex_unlock(&tty->termios_mutex);
+ return 0;
+}
+
static int pty_install(struct tty_driver *driver, struct tty_struct *tty)
{
struct tty_struct *o_tty;
@@ -290,6 +336,7 @@
.chars_in_buffer = pty_chars_in_buffer,
.unthrottle = pty_unthrottle,
.set_termios = pty_set_termios,
+ .resize = pty_resize
};
/* Traditional BSD devices */
@@ -319,6 +366,7 @@
.unthrottle = pty_unthrottle,
.set_termios = pty_set_termios,
.ioctl = pty_bsd_ioctl,
+ .resize = pty_resize
};
static void __init legacy_pty_init(void)
@@ -561,7 +609,8 @@
.unthrottle = pty_unthrottle,
.set_termios = pty_set_termios,
.ioctl = pty_unix98_ioctl,
- .shutdown = pty_unix98_shutdown
+ .shutdown = pty_unix98_shutdown,
+ .resize = pty_resize
};
static const struct tty_operations pty_unix98_ops = {
diff --git a/drivers/char/rio/rio_linux.c b/drivers/char/rio/rio_linux.c
index a8f68a3..2e8a6ee 100644
--- a/drivers/char/rio/rio_linux.c
+++ b/drivers/char/rio/rio_linux.c
@@ -173,7 +173,7 @@
static void rio_enable_tx_interrupts(void *ptr);
static void rio_disable_rx_interrupts(void *ptr);
static void rio_enable_rx_interrupts(void *ptr);
-static int rio_get_CD(void *ptr);
+static int rio_carrier_raised(struct tty_port *port);
static void rio_shutdown_port(void *ptr);
static int rio_set_real_termios(void *ptr);
static void rio_hungup(void *ptr);
@@ -224,7 +224,6 @@
rio_enable_tx_interrupts,
rio_disable_rx_interrupts,
rio_enable_rx_interrupts,
- rio_get_CD,
rio_shutdown_port,
rio_set_real_termios,
rio_chars_in_buffer,
@@ -476,9 +475,9 @@
/* Jeez. Isn't this simple? */
-static int rio_get_CD(void *ptr)
+static int rio_carrier_raised(struct tty_port *port)
{
- struct Port *PortP = ptr;
+ struct Port *PortP = container_of(port, struct Port, gs.port);
int rv;
func_enter();
@@ -797,16 +796,9 @@
return 1;
}
-
-static void *ckmalloc(int size)
-{
- void *p;
-
- p = kzalloc(size, GFP_KERNEL);
- return p;
-}
-
-
+static const struct tty_port_operations rio_port_ops = {
+ .carrier_raised = rio_carrier_raised,
+};
static int rio_init_datastructures(void)
{
@@ -826,33 +818,30 @@
#define TMIO_SZ sizeof(struct termios *)
rio_dprintk(RIO_DEBUG_INIT, "getting : %Zd %Zd %Zd %Zd %Zd bytes\n", RI_SZ, RIO_HOSTS * HOST_SZ, RIO_PORTS * PORT_SZ, RIO_PORTS * TMIO_SZ, RIO_PORTS * TMIO_SZ);
- if (!(p = ckmalloc(RI_SZ)))
+ if (!(p = kzalloc(RI_SZ, GFP_KERNEL)))
goto free0;
- if (!(p->RIOHosts = ckmalloc(RIO_HOSTS * HOST_SZ)))
+ if (!(p->RIOHosts = kzalloc(RIO_HOSTS * HOST_SZ, GFP_KERNEL)))
goto free1;
- if (!(p->RIOPortp = ckmalloc(RIO_PORTS * PORT_SZ)))
+ if (!(p->RIOPortp = kzalloc(RIO_PORTS * PORT_SZ, GFP_KERNEL)))
goto free2;
p->RIOConf = RIOConf;
rio_dprintk(RIO_DEBUG_INIT, "Got : %p %p %p\n", p, p->RIOHosts, p->RIOPortp);
#if 1
for (i = 0; i < RIO_PORTS; i++) {
- port = p->RIOPortp[i] = ckmalloc(sizeof(struct Port));
+ port = p->RIOPortp[i] = kzalloc(sizeof(struct Port), GFP_KERNEL);
if (!port) {
goto free6;
}
rio_dprintk(RIO_DEBUG_INIT, "initing port %d (%d)\n", i, port->Mapped);
+ tty_port_init(&port->gs.port);
+ port->gs.port.ops = &rio_port_ops;
port->PortNum = i;
port->gs.magic = RIO_MAGIC;
port->gs.close_delay = HZ / 2;
port->gs.closing_wait = 30 * HZ;
port->gs.rd = &rio_real_driver;
spin_lock_init(&port->portSem);
- /*
- * Initializing wait queue
- */
- init_waitqueue_head(&port->gs.port.open_wait);
- init_waitqueue_head(&port->gs.port.close_wait);
}
#else
/* We could postpone initializing them to when they are configured. */
diff --git a/drivers/char/riscom8.c b/drivers/char/riscom8.c
index 2c6c8f3..9af8d74 100644
--- a/drivers/char/riscom8.c
+++ b/drivers/char/riscom8.c
@@ -857,98 +857,21 @@
rc_shutdown_board(bp);
}
-static int block_til_ready(struct tty_struct *tty, struct file *filp,
- struct riscom_port *port)
+static int carrier_raised(struct tty_port *port)
{
- DECLARE_WAITQUEUE(wait, current);
- struct riscom_board *bp = port_Board(port);
- int retval;
- int do_clocal = 0;
- int CD;
+ struct riscom_port *p = container_of(port, struct riscom_port, port);
+ struct riscom_board *bp = port_Board(p);
unsigned long flags;
-
- /*
- * If the device is in the middle of being closed, then block
- * until it's done, and then try again.
- */
- if (tty_hung_up_p(filp) || port->port.flags & ASYNC_CLOSING) {
- interruptible_sleep_on(&port->port.close_wait);
- if (port->port.flags & ASYNC_HUP_NOTIFY)
- return -EAGAIN;
- else
- return -ERESTARTSYS;
- }
-
- /*
- * If non-blocking mode is set, or the port is not enabled,
- * then make the check up front and then exit.
- */
- if ((filp->f_flags & O_NONBLOCK) ||
- (tty->flags & (1 << TTY_IO_ERROR))) {
- port->port.flags |= ASYNC_NORMAL_ACTIVE;
- return 0;
- }
-
- if (C_CLOCAL(tty))
- do_clocal = 1;
-
- /*
- * Block waiting for the carrier detect and the line to become
- * free (i.e., not in use by the callout). While we are in
- * this loop, info->count is dropped by one, so that
- * rs_close() knows when to free things. We restore it upon
- * exit, either normal or abnormal.
- */
- retval = 0;
- add_wait_queue(&port->port.open_wait, &wait);
-
+ int CD;
+
spin_lock_irqsave(&riscom_lock, flags);
-
- if (!tty_hung_up_p(filp))
- port->port.count--;
-
+ rc_out(bp, CD180_CAR, port_No(p));
+ CD = rc_in(bp, CD180_MSVR) & MSVR_CD;
+ rc_out(bp, CD180_MSVR, MSVR_RTS);
+ bp->DTR &= ~(1u << port_No(p));
+ rc_out(bp, RC_DTR, bp->DTR);
spin_unlock_irqrestore(&riscom_lock, flags);
-
- port->port.blocked_open++;
- while (1) {
- spin_lock_irqsave(&riscom_lock, flags);
-
- rc_out(bp, CD180_CAR, port_No(port));
- CD = rc_in(bp, CD180_MSVR) & MSVR_CD;
- rc_out(bp, CD180_MSVR, MSVR_RTS);
- bp->DTR &= ~(1u << port_No(port));
- rc_out(bp, RC_DTR, bp->DTR);
-
- spin_unlock_irqrestore(&riscom_lock, flags);
-
- set_current_state(TASK_INTERRUPTIBLE);
- if (tty_hung_up_p(filp) ||
- !(port->port.flags & ASYNC_INITIALIZED)) {
- if (port->port.flags & ASYNC_HUP_NOTIFY)
- retval = -EAGAIN;
- else
- retval = -ERESTARTSYS;
- break;
- }
- if (!(port->port.flags & ASYNC_CLOSING) &&
- (do_clocal || CD))
- break;
- if (signal_pending(current)) {
- retval = -ERESTARTSYS;
- break;
- }
- schedule();
- }
- __set_current_state(TASK_RUNNING);
- remove_wait_queue(&port->port.open_wait, &wait);
- if (!tty_hung_up_p(filp))
- port->port.count++;
- port->port.blocked_open--;
- if (retval)
- return retval;
-
- port->port.flags |= ASYNC_NORMAL_ACTIVE;
- return 0;
+ return CD;
}
static int rc_open(struct tty_struct *tty, struct file *filp)
@@ -977,13 +900,13 @@
error = rc_setup_port(bp, port);
if (error == 0)
- error = block_til_ready(tty, filp, port);
+ error = tty_port_block_til_ready(&port->port, tty, filp);
return error;
}
static void rc_flush_buffer(struct tty_struct *tty)
{
- struct riscom_port *port = (struct riscom_port *)tty->driver_data;
+ struct riscom_port *port = tty->driver_data;
unsigned long flags;
if (rc_paranoia_check(port, tty->name, "rc_flush_buffer"))
@@ -998,7 +921,7 @@
static void rc_close(struct tty_struct *tty, struct file *filp)
{
- struct riscom_port *port = (struct riscom_port *) tty->driver_data;
+ struct riscom_port *port = tty->driver_data;
struct riscom_board *bp;
unsigned long flags;
unsigned long timeout;
@@ -1006,40 +929,19 @@
if (!port || rc_paranoia_check(port, tty->name, "close"))
return;
- spin_lock_irqsave(&riscom_lock, flags);
-
- if (tty_hung_up_p(filp))
- goto out;
-
bp = port_Board(port);
- if ((tty->count == 1) && (port->port.count != 1)) {
- printk(KERN_INFO "rc%d: rc_close: bad port count;"
- " tty->count is 1, port count is %d\n",
- board_No(bp), port->port.count);
- port->port.count = 1;
- }
- if (--port->port.count < 0) {
- printk(KERN_INFO "rc%d: rc_close: bad port count "
- "for tty%d: %d\n",
- board_No(bp), port_No(port), port->port.count);
- port->port.count = 0;
- }
- if (port->port.count)
- goto out;
- port->port.flags |= ASYNC_CLOSING;
- /*
- * Now we wait for the transmit buffer to clear; and we notify
- * the line discipline to only process XON/XOFF characters.
- */
- tty->closing = 1;
- if (port->port.closing_wait != ASYNC_CLOSING_WAIT_NONE)
- tty_wait_until_sent(tty, port->port.closing_wait);
+
+ if (tty_port_close_start(&port->port, tty, filp) == 0)
+ return;
+
/*
* At this point we stop accepting input. To do this, we
* disable the receive line status interrupts, and tell the
* interrupt driver to stop checking the data ready bit in the
* line status register.
*/
+
+ spin_lock_irqsave(&riscom_lock, flags);
port->IER &= ~IER_RXD;
if (port->port.flags & ASYNC_INITIALIZED) {
port->IER &= ~IER_TXRDY;
@@ -1053,33 +955,24 @@
*/
timeout = jiffies + HZ;
while (port->IER & IER_TXEMPTY) {
+ spin_unlock_irqrestore(&riscom_lock, flags);
msleep_interruptible(jiffies_to_msecs(port->timeout));
+ spin_lock_irqsave(&riscom_lock, flags);
if (time_after(jiffies, timeout))
break;
}
}
rc_shutdown_port(tty, bp, port);
rc_flush_buffer(tty);
- tty_ldisc_flush(tty);
-
- tty->closing = 0;
- port->port.tty = NULL;
- if (port->port.blocked_open) {
- if (port->port.close_delay)
- msleep_interruptible(jiffies_to_msecs(port->port.close_delay));
- wake_up_interruptible(&port->port.open_wait);
- }
- port->port.flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
- wake_up_interruptible(&port->port.close_wait);
-
-out:
spin_unlock_irqrestore(&riscom_lock, flags);
+
+ tty_port_close_end(&port->port, tty);
}
static int rc_write(struct tty_struct *tty,
const unsigned char *buf, int count)
{
- struct riscom_port *port = (struct riscom_port *)tty->driver_data;
+ struct riscom_port *port = tty->driver_data;
struct riscom_board *bp;
int c, total = 0;
unsigned long flags;
@@ -1122,7 +1015,7 @@
static int rc_put_char(struct tty_struct *tty, unsigned char ch)
{
- struct riscom_port *port = (struct riscom_port *)tty->driver_data;
+ struct riscom_port *port = tty->driver_data;
unsigned long flags;
int ret = 0;
@@ -1146,7 +1039,7 @@
static void rc_flush_chars(struct tty_struct *tty)
{
- struct riscom_port *port = (struct riscom_port *)tty->driver_data;
+ struct riscom_port *port = tty->driver_data;
unsigned long flags;
if (rc_paranoia_check(port, tty->name, "rc_flush_chars"))
@@ -1166,7 +1059,7 @@
static int rc_write_room(struct tty_struct *tty)
{
- struct riscom_port *port = (struct riscom_port *)tty->driver_data;
+ struct riscom_port *port = tty->driver_data;
int ret;
if (rc_paranoia_check(port, tty->name, "rc_write_room"))
@@ -1180,7 +1073,7 @@
static int rc_chars_in_buffer(struct tty_struct *tty)
{
- struct riscom_port *port = (struct riscom_port *)tty->driver_data;
+ struct riscom_port *port = tty->driver_data;
if (rc_paranoia_check(port, tty->name, "rc_chars_in_buffer"))
return 0;
@@ -1190,7 +1083,7 @@
static int rc_tiocmget(struct tty_struct *tty, struct file *file)
{
- struct riscom_port *port = (struct riscom_port *)tty->driver_data;
+ struct riscom_port *port = tty->driver_data;
struct riscom_board *bp;
unsigned char status;
unsigned int result;
@@ -1220,7 +1113,7 @@
static int rc_tiocmset(struct tty_struct *tty, struct file *file,
unsigned int set, unsigned int clear)
{
- struct riscom_port *port = (struct riscom_port *)tty->driver_data;
+ struct riscom_port *port = tty->driver_data;
unsigned long flags;
struct riscom_board *bp;
@@ -1252,7 +1145,7 @@
static int rc_send_break(struct tty_struct *tty, int length)
{
- struct riscom_port *port = (struct riscom_port *)tty->driver_data;
+ struct riscom_port *port = tty->driver_data;
struct riscom_board *bp = port_Board(port);
unsigned long flags;
@@ -1345,7 +1238,7 @@
static int rc_ioctl(struct tty_struct *tty, struct file *filp,
unsigned int cmd, unsigned long arg)
{
- struct riscom_port *port = (struct riscom_port *)tty->driver_data;
+ struct riscom_port *port = tty->driver_data;
void __user *argp = (void __user *)arg;
int retval;
@@ -1371,7 +1264,7 @@
static void rc_throttle(struct tty_struct *tty)
{
- struct riscom_port *port = (struct riscom_port *)tty->driver_data;
+ struct riscom_port *port = tty->driver_data;
struct riscom_board *bp;
unsigned long flags;
@@ -1393,7 +1286,7 @@
static void rc_unthrottle(struct tty_struct *tty)
{
- struct riscom_port *port = (struct riscom_port *)tty->driver_data;
+ struct riscom_port *port = tty->driver_data;
struct riscom_board *bp;
unsigned long flags;
@@ -1415,7 +1308,7 @@
static void rc_stop(struct tty_struct *tty)
{
- struct riscom_port *port = (struct riscom_port *)tty->driver_data;
+ struct riscom_port *port = tty->driver_data;
struct riscom_board *bp;
unsigned long flags;
@@ -1433,7 +1326,7 @@
static void rc_start(struct tty_struct *tty)
{
- struct riscom_port *port = (struct riscom_port *)tty->driver_data;
+ struct riscom_port *port = tty->driver_data;
struct riscom_board *bp;
unsigned long flags;
@@ -1454,8 +1347,9 @@
static void rc_hangup(struct tty_struct *tty)
{
- struct riscom_port *port = (struct riscom_port *)tty->driver_data;
+ struct riscom_port *port = tty->driver_data;
struct riscom_board *bp;
+ unsigned long flags;
if (rc_paranoia_check(port, tty->name, "rc_hangup"))
return;
@@ -1463,16 +1357,18 @@
bp = port_Board(port);
rc_shutdown_port(tty, bp, port);
+ spin_lock_irqsave(&port->port.lock, flags);
port->port.count = 0;
port->port.flags &= ~ASYNC_NORMAL_ACTIVE;
port->port.tty = NULL;
wake_up_interruptible(&port->port.open_wait);
+ spin_unlock_irqrestore(&port->port.lock, flags);
}
static void rc_set_termios(struct tty_struct *tty,
struct ktermios *old_termios)
{
- struct riscom_port *port = (struct riscom_port *)tty->driver_data;
+ struct riscom_port *port = tty->driver_data;
unsigned long flags;
if (rc_paranoia_check(port, tty->name, "rc_set_termios"))
@@ -1510,6 +1406,11 @@
.break_ctl = rc_send_break,
};
+static const struct tty_port_operations riscom_port_ops = {
+ .carrier_raised = carrier_raised,
+};
+
+
static int __init rc_init_drivers(void)
{
int error;
@@ -1541,6 +1442,7 @@
memset(rc_port, 0, sizeof(rc_port));
for (i = 0; i < RC_NPORT * RC_NBOARD; i++) {
tty_port_init(&rc_port[i].port);
+ rc_port[i].port.ops = &riscom_port_ops;
rc_port[i].magic = RISCOM8_MAGIC;
}
return 0;
diff --git a/drivers/char/rocket.c b/drivers/char/rocket.c
index 584d791..f59fc5c 100644
--- a/drivers/char/rocket.c
+++ b/drivers/char/rocket.c
@@ -135,6 +135,7 @@
static int is_PCI[NUM_BOARDS];
static rocketModel_t rocketModel[NUM_BOARDS];
static int max_board;
+static const struct tty_port_operations rocket_port_ops;
/*
* The following arrays define the interrupt bits corresponding to each AIOP.
@@ -435,15 +436,15 @@
#endif
if (!info)
return;
- if (!info->port.tty) {
- printk(KERN_WARNING "rp: WARNING %s called with "
- "info->port.tty==NULL\n", __func__);
+ tty = tty_port_tty_get(&info->port);
+
+ if (tty == NULL) {
+ printk(KERN_WARNING "rp: WARNING %s called with tty==NULL\n", __func__);
clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
return;
}
spin_lock_irqsave(&info->slock, flags);
- tty = info->port.tty;
info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp);
/* Loop sending data to FIFO until done or FIFO full */
@@ -477,6 +478,7 @@
}
spin_unlock_irqrestore(&info->slock, flags);
+ tty_kref_put(tty);
#ifdef ROCKET_DEBUG_INTR
printk(KERN_DEBUG "(%d,%d,%d,%d)...\n", info->xmit_cnt, info->xmit_head,
@@ -498,18 +500,18 @@
if (!info)
return;
- if ((info->flags & ROCKET_INITIALIZED) == 0) {
+ if ((info->port.flags & ASYNC_INITIALIZED) == 0) {
printk(KERN_WARNING "rp: WARNING: rp_handle_port called with "
"info->flags & NOT_INIT\n");
return;
}
- if (!info->port.tty) {
+ tty = tty_port_tty_get(&info->port);
+ if (!tty) {
printk(KERN_WARNING "rp: WARNING: rp_handle_port called with "
- "info->port.tty==NULL\n");
+ "tty==NULL\n");
return;
}
cp = &info->channel;
- tty = info->port.tty;
IntMask = sGetChanIntID(cp) & info->intmask;
#ifdef ROCKET_DEBUG_INTR
@@ -541,6 +543,7 @@
printk(KERN_INFO "DSR change...\n");
}
#endif
+ tty_kref_put(tty);
}
/*
@@ -649,9 +652,8 @@
info->board = board;
info->aiop = aiop;
info->chan = chan;
- info->port.closing_wait = 3000;
- info->port.close_delay = 50;
- init_waitqueue_head(&info->port.open_wait);
+ tty_port_init(&info->port);
+ info->port.ops = &rocket_port_ops;
init_completion(&info->close_wait);
info->flags &= ~ROCKET_MODE_MASK;
switch (pc104[board][line]) {
@@ -710,7 +712,7 @@
* Configures a rocketport port according to its termio settings. Called from
* user mode into the driver (exception handler). *info CD manipulation is spinlock protected.
*/
-static void configure_r_port(struct r_port *info,
+static void configure_r_port(struct tty_struct *tty, struct r_port *info,
struct ktermios *old_termios)
{
unsigned cflag;
@@ -718,7 +720,7 @@
unsigned rocketMode;
int bits, baud, divisor;
CHANNEL_t *cp;
- struct ktermios *t = info->port.tty->termios;
+ struct ktermios *t = tty->termios;
cp = &info->channel;
cflag = t->c_cflag;
@@ -751,7 +753,7 @@
}
/* baud rate */
- baud = tty_get_baud_rate(info->port.tty);
+ baud = tty_get_baud_rate(tty);
if (!baud)
baud = 9600;
divisor = ((rp_baud_base[info->board] + (baud >> 1)) / baud) - 1;
@@ -769,7 +771,7 @@
sSetBaud(cp, divisor);
/* FIXME: Should really back compute a baud rate from the divisor */
- tty_encode_baud_rate(info->port.tty, baud, baud);
+ tty_encode_baud_rate(tty, baud, baud);
if (cflag & CRTSCTS) {
info->intmask |= DELTA_CTS;
@@ -794,15 +796,15 @@
* Handle software flow control in the board
*/
#ifdef ROCKET_SOFT_FLOW
- if (I_IXON(info->port.tty)) {
+ if (I_IXON(tty)) {
sEnTxSoftFlowCtl(cp);
- if (I_IXANY(info->port.tty)) {
+ if (I_IXANY(tty)) {
sEnIXANY(cp);
} else {
sDisIXANY(cp);
}
- sSetTxXONChar(cp, START_CHAR(info->port.tty));
- sSetTxXOFFChar(cp, STOP_CHAR(info->port.tty));
+ sSetTxXONChar(cp, START_CHAR(tty));
+ sSetTxXOFFChar(cp, STOP_CHAR(tty));
} else {
sDisTxSoftFlowCtl(cp);
sDisIXANY(cp);
@@ -814,24 +816,24 @@
* Set up ignore/read mask words
*/
info->read_status_mask = STMRCVROVRH | 0xFF;
- if (I_INPCK(info->port.tty))
+ if (I_INPCK(tty))
info->read_status_mask |= STMFRAMEH | STMPARITYH;
- if (I_BRKINT(info->port.tty) || I_PARMRK(info->port.tty))
+ if (I_BRKINT(tty) || I_PARMRK(tty))
info->read_status_mask |= STMBREAKH;
/*
* Characters to ignore
*/
info->ignore_status_mask = 0;
- if (I_IGNPAR(info->port.tty))
+ if (I_IGNPAR(tty))
info->ignore_status_mask |= STMFRAMEH | STMPARITYH;
- if (I_IGNBRK(info->port.tty)) {
+ if (I_IGNBRK(tty)) {
info->ignore_status_mask |= STMBREAKH;
/*
* If we're ignoring parity and break indicators,
* ignore overruns too. (For real raw support).
*/
- if (I_IGNPAR(info->port.tty))
+ if (I_IGNPAR(tty))
info->ignore_status_mask |= STMRCVROVRH;
}
@@ -864,106 +866,17 @@
}
}
-/* info->port.count is considered critical, protected by spinlocks. */
-static int block_til_ready(struct tty_struct *tty, struct file *filp,
- struct r_port *info)
+static int carrier_raised(struct tty_port *port)
{
- DECLARE_WAITQUEUE(wait, current);
- int retval;
- int do_clocal = 0, extra_count = 0;
- unsigned long flags;
+ struct r_port *info = container_of(port, struct r_port, port);
+ return (sGetChanStatusLo(&info->channel) & CD_ACT) ? 1 : 0;
+}
- /*
- * If the device is in the middle of being closed, then block
- * until it's done, and then try again.
- */
- if (tty_hung_up_p(filp))
- return ((info->flags & ROCKET_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS);
- if (info->flags & ROCKET_CLOSING) {
- if (wait_for_completion_interruptible(&info->close_wait))
- return -ERESTARTSYS;
- return ((info->flags & ROCKET_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS);
- }
-
- /*
- * If non-blocking mode is set, or the port is not enabled,
- * then make the check up front and then exit.
- */
- if ((filp->f_flags & O_NONBLOCK) || (tty->flags & (1 << TTY_IO_ERROR))) {
- info->flags |= ROCKET_NORMAL_ACTIVE;
- return 0;
- }
- if (tty->termios->c_cflag & CLOCAL)
- do_clocal = 1;
-
- /*
- * Block waiting for the carrier detect and the line to become free. While we are in
- * this loop, info->port.count is dropped by one, so that rp_close() knows when to free things.
- * We restore it upon exit, either normal or abnormal.
- */
- retval = 0;
- add_wait_queue(&info->port.open_wait, &wait);
-#ifdef ROCKET_DEBUG_OPEN
- printk(KERN_INFO "block_til_ready before block: ttyR%d, count = %d\n", info->line, info->port.count);
-#endif
- spin_lock_irqsave(&info->slock, flags);
-
-#ifdef ROCKET_DISABLE_SIMUSAGE
- info->flags |= ROCKET_NORMAL_ACTIVE;
-#else
- if (!tty_hung_up_p(filp)) {
- extra_count = 1;
- info->port.count--;
- }
-#endif
- info->port.blocked_open++;
-
- spin_unlock_irqrestore(&info->slock, flags);
-
- while (1) {
- if (tty->termios->c_cflag & CBAUD) {
- sSetDTR(&info->channel);
- sSetRTS(&info->channel);
- }
- set_current_state(TASK_INTERRUPTIBLE);
- if (tty_hung_up_p(filp) || !(info->flags & ROCKET_INITIALIZED)) {
- if (info->flags & ROCKET_HUP_NOTIFY)
- retval = -EAGAIN;
- else
- retval = -ERESTARTSYS;
- break;
- }
- if (!(info->flags & ROCKET_CLOSING) && (do_clocal || (sGetChanStatusLo(&info->channel) & CD_ACT)))
- break;
- if (signal_pending(current)) {
- retval = -ERESTARTSYS;
- break;
- }
-#ifdef ROCKET_DEBUG_OPEN
- printk(KERN_INFO "block_til_ready blocking: ttyR%d, count = %d, flags=0x%0x\n",
- info->line, info->port.count, info->flags);
-#endif
- schedule(); /* Don't hold spinlock here, will hang PC */
- }
- __set_current_state(TASK_RUNNING);
- remove_wait_queue(&info->port.open_wait, &wait);
-
- spin_lock_irqsave(&info->slock, flags);
-
- if (extra_count)
- info->port.count++;
- info->port.blocked_open--;
-
- spin_unlock_irqrestore(&info->slock, flags);
-
-#ifdef ROCKET_DEBUG_OPEN
- printk(KERN_INFO "block_til_ready after blocking: ttyR%d, count = %d\n",
- info->line, info->port.count);
-#endif
- if (retval)
- return retval;
- info->flags |= ROCKET_NORMAL_ACTIVE;
- return 0;
+static void raise_dtr_rts(struct tty_port *port)
+{
+ struct r_port *info = container_of(port, struct r_port, port);
+ sSetDTR(&info->channel);
+ sSetRTS(&info->channel);
}
/*
@@ -973,24 +886,26 @@
static int rp_open(struct tty_struct *tty, struct file *filp)
{
struct r_port *info;
+ struct tty_port *port;
int line = 0, retval;
CHANNEL_t *cp;
unsigned long page;
line = tty->index;
- if ((line < 0) || (line >= MAX_RP_PORTS) || ((info = rp_table[line]) == NULL))
+ if (line < 0 || line >= MAX_RP_PORTS || ((info = rp_table[line]) == NULL))
return -ENXIO;
-
+ port = &info->port;
+
page = __get_free_page(GFP_KERNEL);
if (!page)
return -ENOMEM;
- if (info->flags & ROCKET_CLOSING) {
+ if (port->flags & ASYNC_CLOSING) {
retval = wait_for_completion_interruptible(&info->close_wait);
free_page(page);
if (retval)
return retval;
- return ((info->flags & ROCKET_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS);
+ return ((port->flags & ASYNC_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS);
}
/*
@@ -1002,9 +917,9 @@
info->xmit_buf = (unsigned char *) page;
tty->driver_data = info;
- info->port.tty = tty;
+ tty_port_tty_set(port, tty);
- if (info->port.count++ == 0) {
+ if (port->count++ == 0) {
atomic_inc(&rp_num_ports_open);
#ifdef ROCKET_DEBUG_OPEN
@@ -1019,7 +934,7 @@
/*
* Info->count is now 1; so it's safe to sleep now.
*/
- if ((info->flags & ROCKET_INITIALIZED) == 0) {
+ if (!test_bit(ASYNC_INITIALIZED, &port->flags)) {
cp = &info->channel;
sSetRxTrigger(cp, TRIG_1);
if (sGetChanStatus(cp) & CD_ACT)
@@ -1043,21 +958,21 @@
sEnRxFIFO(cp);
sEnTransmit(cp);
- info->flags |= ROCKET_INITIALIZED;
+ set_bit(ASYNC_INITIALIZED, &info->port.flags);
/*
* Set up the tty->alt_speed kludge
*/
if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_HI)
- info->port.tty->alt_speed = 57600;
+ tty->alt_speed = 57600;
if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_VHI)
- info->port.tty->alt_speed = 115200;
+ tty->alt_speed = 115200;
if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_SHI)
- info->port.tty->alt_speed = 230400;
+ tty->alt_speed = 230400;
if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_WARP)
- info->port.tty->alt_speed = 460800;
+ tty->alt_speed = 460800;
- configure_r_port(info, NULL);
+ configure_r_port(tty, info, NULL);
if (tty->termios->c_cflag & CBAUD) {
sSetDTR(cp);
sSetRTS(cp);
@@ -1066,7 +981,7 @@
/* Starts (or resets) the maint polling loop */
mod_timer(&rocket_timer, jiffies + POLL_PERIOD);
- retval = block_til_ready(tty, filp, info);
+ retval = tty_port_block_til_ready(port, tty, filp);
if (retval) {
#ifdef ROCKET_DEBUG_OPEN
printk(KERN_INFO "rp_open returning after block_til_ready with %d\n", retval);
@@ -1081,8 +996,8 @@
*/
static void rp_close(struct tty_struct *tty, struct file *filp)
{
- struct r_port *info = (struct r_port *) tty->driver_data;
- unsigned long flags;
+ struct r_port *info = tty->driver_data;
+ struct tty_port *port = &info->port;
int timeout;
CHANNEL_t *cp;
@@ -1093,53 +1008,10 @@
printk(KERN_INFO "rp_close ttyR%d, count = %d\n", info->line, info->port.count);
#endif
- if (tty_hung_up_p(filp))
+ if (tty_port_close_start(port, tty, filp) == 0)
return;
- spin_lock_irqsave(&info->slock, flags);
-
- if ((tty->count == 1) && (info->port.count != 1)) {
- /*
- * Uh, oh. tty->count is 1, which means that the tty
- * structure will be freed. Info->count should always
- * be one in these conditions. If it's greater than
- * one, we've got real problems, since it means the
- * serial port won't be shutdown.
- */
- printk(KERN_WARNING "rp_close: bad serial port count; "
- "tty->count is 1, info->port.count is %d\n", info->port.count);
- info->port.count = 1;
- }
- if (--info->port.count < 0) {
- printk(KERN_WARNING "rp_close: bad serial port count for "
- "ttyR%d: %d\n", info->line, info->port.count);
- info->port.count = 0;
- }
- if (info->port.count) {
- spin_unlock_irqrestore(&info->slock, flags);
- return;
- }
- info->flags |= ROCKET_CLOSING;
- spin_unlock_irqrestore(&info->slock, flags);
cp = &info->channel;
-
- /*
- * Notify the line discpline to only process XON/XOFF characters
- */
- tty->closing = 1;
-
- /*
- * If transmission was throttled by the application request,
- * just flush the xmit buffer.
- */
- if (tty->flow_stopped)
- rp_flush_buffer(tty);
-
- /*
- * Wait for the transmit buffer to clear
- */
- if (info->port.closing_wait != ROCKET_CLOSING_WAIT_NONE)
- tty_wait_until_sent(tty, info->port.closing_wait);
/*
* Before we drop DTR, make sure the UART transmitter
* has completely drained; this is especially
@@ -1168,19 +1040,24 @@
clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
- if (info->port.blocked_open) {
- if (info->port.close_delay) {
- msleep_interruptible(jiffies_to_msecs(info->port.close_delay));
+ /* We can't yet use tty_port_close_end as the buffer handling in this
+ driver is a bit different to the usual */
+
+ if (port->blocked_open) {
+ if (port->close_delay) {
+ msleep_interruptible(jiffies_to_msecs(port->close_delay));
}
- wake_up_interruptible(&info->port.open_wait);
+ wake_up_interruptible(&port->open_wait);
} else {
if (info->xmit_buf) {
free_page((unsigned long) info->xmit_buf);
info->xmit_buf = NULL;
}
}
- info->flags &= ~(ROCKET_INITIALIZED | ROCKET_CLOSING | ROCKET_NORMAL_ACTIVE);
+ info->port.flags &= ~(ASYNC_INITIALIZED | ASYNC_CLOSING | ASYNC_NORMAL_ACTIVE);
tty->closing = 0;
+ tty_port_tty_set(port, NULL);
+ wake_up_interruptible(&port->close_wait);
complete_all(&info->close_wait);
atomic_dec(&rp_num_ports_open);
@@ -1195,7 +1072,7 @@
static void rp_set_termios(struct tty_struct *tty,
struct ktermios *old_termios)
{
- struct r_port *info = (struct r_port *) tty->driver_data;
+ struct r_port *info = tty->driver_data;
CHANNEL_t *cp;
unsigned cflag;
@@ -1213,7 +1090,7 @@
/* Or CMSPAR */
tty->termios->c_cflag &= ~CMSPAR;
- configure_r_port(info, old_termios);
+ configure_r_port(tty, info, old_termios);
cp = &info->channel;
@@ -1238,7 +1115,7 @@
static int rp_break(struct tty_struct *tty, int break_state)
{
- struct r_port *info = (struct r_port *) tty->driver_data;
+ struct r_port *info = tty->driver_data;
unsigned long flags;
if (rocket_paranoia_check(info, "rp_break"))
@@ -1284,7 +1161,7 @@
*/
static int rp_tiocmget(struct tty_struct *tty, struct file *file)
{
- struct r_port *info = (struct r_port *)tty->driver_data;
+ struct r_port *info = tty->driver_data;
unsigned int control, result, ChanStatus;
ChanStatus = sGetChanStatusLo(&info->channel);
@@ -1305,7 +1182,7 @@
static int rp_tiocmset(struct tty_struct *tty, struct file *file,
unsigned int set, unsigned int clear)
{
- struct r_port *info = (struct r_port *)tty->driver_data;
+ struct r_port *info = tty->driver_data;
if (set & TIOCM_RTS)
info->channel.TxControl[3] |= SET_RTS;
@@ -1338,7 +1215,8 @@
return 0;
}
-static int set_config(struct r_port *info, struct rocket_config __user *new_info)
+static int set_config(struct tty_struct *tty, struct r_port *info,
+ struct rocket_config __user *new_info)
{
struct rocket_config new_serial;
@@ -1350,7 +1228,7 @@
if ((new_serial.flags & ~ROCKET_USR_MASK) != (info->flags & ~ROCKET_USR_MASK))
return -EPERM;
info->flags = ((info->flags & ~ROCKET_USR_MASK) | (new_serial.flags & ROCKET_USR_MASK));
- configure_r_port(info, NULL);
+ configure_r_port(tty, info, NULL);
return 0;
}
@@ -1359,15 +1237,15 @@
info->port.closing_wait = new_serial.closing_wait;
if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_HI)
- info->port.tty->alt_speed = 57600;
+ tty->alt_speed = 57600;
if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_VHI)
- info->port.tty->alt_speed = 115200;
+ tty->alt_speed = 115200;
if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_SHI)
- info->port.tty->alt_speed = 230400;
+ tty->alt_speed = 230400;
if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_WARP)
- info->port.tty->alt_speed = 460800;
+ tty->alt_speed = 460800;
- configure_r_port(info, NULL);
+ configure_r_port(tty, info, NULL);
return 0;
}
@@ -1434,7 +1312,7 @@
static int rp_ioctl(struct tty_struct *tty, struct file *file,
unsigned int cmd, unsigned long arg)
{
- struct r_port *info = (struct r_port *) tty->driver_data;
+ struct r_port *info = tty->driver_data;
void __user *argp = (void __user *)arg;
int ret = 0;
@@ -1452,7 +1330,7 @@
ret = get_config(info, argp);
break;
case RCKP_SET_CONFIG:
- ret = set_config(info, argp);
+ ret = set_config(tty, info, argp);
break;
case RCKP_GET_PORTS:
ret = get_ports(info, argp);
@@ -1472,7 +1350,7 @@
static void rp_send_xchar(struct tty_struct *tty, char ch)
{
- struct r_port *info = (struct r_port *) tty->driver_data;
+ struct r_port *info = tty->driver_data;
CHANNEL_t *cp;
if (rocket_paranoia_check(info, "rp_send_xchar"))
@@ -1487,7 +1365,7 @@
static void rp_throttle(struct tty_struct *tty)
{
- struct r_port *info = (struct r_port *) tty->driver_data;
+ struct r_port *info = tty->driver_data;
CHANNEL_t *cp;
#ifdef ROCKET_DEBUG_THROTTLE
@@ -1507,7 +1385,7 @@
static void rp_unthrottle(struct tty_struct *tty)
{
- struct r_port *info = (struct r_port *) tty->driver_data;
+ struct r_port *info = tty->driver_data;
CHANNEL_t *cp;
#ifdef ROCKET_DEBUG_THROTTLE
printk(KERN_INFO "unthrottle %s: %d....\n", tty->name,
@@ -1534,7 +1412,7 @@
*/
static void rp_stop(struct tty_struct *tty)
{
- struct r_port *info = (struct r_port *) tty->driver_data;
+ struct r_port *info = tty->driver_data;
#ifdef ROCKET_DEBUG_FLOW
printk(KERN_INFO "stop %s: %d %d....\n", tty->name,
@@ -1550,7 +1428,7 @@
static void rp_start(struct tty_struct *tty)
{
- struct r_port *info = (struct r_port *) tty->driver_data;
+ struct r_port *info = tty->driver_data;
#ifdef ROCKET_DEBUG_FLOW
printk(KERN_INFO "start %s: %d %d....\n", tty->name,
@@ -1570,7 +1448,7 @@
*/
static void rp_wait_until_sent(struct tty_struct *tty, int timeout)
{
- struct r_port *info = (struct r_port *) tty->driver_data;
+ struct r_port *info = tty->driver_data;
CHANNEL_t *cp;
unsigned long orig_jiffies;
int check_time, exit_time;
@@ -1627,7 +1505,7 @@
static void rp_hangup(struct tty_struct *tty)
{
CHANNEL_t *cp;
- struct r_port *info = (struct r_port *) tty->driver_data;
+ struct r_port *info = tty->driver_data;
if (rocket_paranoia_check(info, "rp_hangup"))
return;
@@ -1636,15 +1514,13 @@
printk(KERN_INFO "rp_hangup of ttyR%d...\n", info->line);
#endif
rp_flush_buffer(tty);
- if (info->flags & ROCKET_CLOSING)
+ if (info->port.flags & ASYNC_CLOSING)
return;
if (info->port.count)
atomic_dec(&rp_num_ports_open);
clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
- info->port.count = 0;
- info->flags &= ~ROCKET_NORMAL_ACTIVE;
- info->port.tty = NULL;
+ tty_port_hangup(&info->port);
cp = &info->channel;
sDisRxFIFO(cp);
@@ -1653,7 +1529,7 @@
sDisCTSFlowCtl(cp);
sDisTxSoftFlowCtl(cp);
sClrTxXOFF(cp);
- info->flags &= ~ROCKET_INITIALIZED;
+ info->port.flags &= ~ASYNC_INITIALIZED;
wake_up_interruptible(&info->port.open_wait);
}
@@ -1667,7 +1543,7 @@
*/
static int rp_put_char(struct tty_struct *tty, unsigned char ch)
{
- struct r_port *info = (struct r_port *) tty->driver_data;
+ struct r_port *info = tty->driver_data;
CHANNEL_t *cp;
unsigned long flags;
@@ -1714,7 +1590,7 @@
static int rp_write(struct tty_struct *tty,
const unsigned char *buf, int count)
{
- struct r_port *info = (struct r_port *) tty->driver_data;
+ struct r_port *info = tty->driver_data;
CHANNEL_t *cp;
const unsigned char *b;
int c, retval = 0;
@@ -1764,7 +1640,8 @@
/* Write remaining data into the port's xmit_buf */
while (1) {
- if (!info->port.tty) /* Seemingly obligatory check... */
+ /* Hung up ? */
+ if (!test_bit(ASYNC_NORMAL_ACTIVE, &info->port.flags))
goto end;
c = min(count, XMIT_BUF_SIZE - info->xmit_cnt - 1);
c = min(c, XMIT_BUF_SIZE - info->xmit_head);
@@ -1806,7 +1683,7 @@
*/
static int rp_write_room(struct tty_struct *tty)
{
- struct r_port *info = (struct r_port *) tty->driver_data;
+ struct r_port *info = tty->driver_data;
int ret;
if (rocket_paranoia_check(info, "rp_write_room"))
@@ -1827,7 +1704,7 @@
*/
static int rp_chars_in_buffer(struct tty_struct *tty)
{
- struct r_port *info = (struct r_port *) tty->driver_data;
+ struct r_port *info = tty->driver_data;
CHANNEL_t *cp;
if (rocket_paranoia_check(info, "rp_chars_in_buffer"))
@@ -1848,7 +1725,7 @@
*/
static void rp_flush_buffer(struct tty_struct *tty)
{
- struct r_port *info = (struct r_port *) tty->driver_data;
+ struct r_port *info = tty->driver_data;
CHANNEL_t *cp;
unsigned long flags;
@@ -2371,6 +2248,11 @@
.tiocmset = rp_tiocmset,
};
+static const struct tty_port_operations rocket_port_ops = {
+ .carrier_raised = carrier_raised,
+ .raise_dtr_rts = raise_dtr_rts,
+};
+
/*
* The module "startup" routine; it's run when the module is loaded.
*/
diff --git a/drivers/char/rocket.h b/drivers/char/rocket.h
index a8b0919..ec863f3 100644
--- a/drivers/char/rocket.h
+++ b/drivers/char/rocket.h
@@ -39,7 +39,7 @@
/*
* Rocketport flags
*/
-#define ROCKET_CALLOUT_NOHUP 0x00000001
+/*#define ROCKET_CALLOUT_NOHUP 0x00000001 */
#define ROCKET_FORCE_CD 0x00000002
#define ROCKET_HUP_NOTIFY 0x00000004
#define ROCKET_SPLIT_TERMIOS 0x00000008
diff --git a/drivers/char/rocket_int.h b/drivers/char/rocket_int.h
index 21f3ff5..67e0f1e 100644
--- a/drivers/char/rocket_int.h
+++ b/drivers/char/rocket_int.h
@@ -1162,11 +1162,6 @@
/* number of characters left in xmit buffer before we ask for more */
#define WAKEUP_CHARS 256
-/* Internal flags used only by the rocketport driver */
-#define ROCKET_INITIALIZED 0x80000000 /* Port is active */
-#define ROCKET_CLOSING 0x40000000 /* Serial port is closing */
-#define ROCKET_NORMAL_ACTIVE 0x20000000 /* Normal port is active */
-
/*
* Assigned major numbers for the Comtrol Rocketport
*/
diff --git a/drivers/char/selection.c b/drivers/char/selection.c
index 2978a49..f29fbe9 100644
--- a/drivers/char/selection.c
+++ b/drivers/char/selection.c
@@ -306,7 +306,7 @@
*/
int paste_selection(struct tty_struct *tty)
{
- struct vc_data *vc = (struct vc_data *)tty->driver_data;
+ struct vc_data *vc = tty->driver_data;
int pasted = 0;
unsigned int count;
struct tty_ldisc *ld;
diff --git a/drivers/char/ser_a2232.c b/drivers/char/ser_a2232.c
index 7b0c352..33872a2 100644
--- a/drivers/char/ser_a2232.c
+++ b/drivers/char/ser_a2232.c
@@ -122,7 +122,7 @@
static void a2232_enable_tx_interrupts(void *ptr);
static void a2232_disable_rx_interrupts(void *ptr);
static void a2232_enable_rx_interrupts(void *ptr);
-static int a2232_get_CD(void *ptr);
+static int a2232_carrier_raised(struct tty_port *port);
static void a2232_shutdown_port(void *ptr);
static int a2232_set_real_termios(void *ptr);
static int a2232_chars_in_buffer(void *ptr);
@@ -148,7 +148,6 @@
a2232_enable_tx_interrupts,
a2232_disable_rx_interrupts,
a2232_enable_rx_interrupts,
- a2232_get_CD,
a2232_shutdown_port,
a2232_set_real_termios,
a2232_chars_in_buffer,
@@ -260,9 +259,10 @@
port->disable_rx = 0;
}
-static int a2232_get_CD(void *ptr)
+static int a2232_carrier_raised(struct tty_port *port)
{
- return ((struct a2232_port *) ptr)->cd_status;
+ struct a2232_port *ap = container_of(port, struct a2232_port, gs.port);
+ return ap->cd_status;
}
static void a2232_shutdown_port(void *ptr)
@@ -460,14 +460,14 @@
if switched on. So the only thing we can do at this
layer here is not taking any characters out of the
A2232 buffer any more. */
- struct a2232_port *port = (struct a2232_port *) tty->driver_data;
+ struct a2232_port *port = tty->driver_data;
port->throttle_input = -1;
}
static void a2232_unthrottle(struct tty_struct *tty)
{
/* Unthrottle: dual to "throttle()" above. */
- struct a2232_port *port = (struct a2232_port *) tty->driver_data;
+ struct a2232_port *port = tty->driver_data;
port->throttle_input = 0;
}
@@ -638,6 +638,10 @@
return IRQ_HANDLED;
}
+static const struct tty_port_operations a2232_port_ops = {
+ .carrier_raised = a2232_carrier_raised,
+};
+
static void a2232_init_portstructs(void)
{
struct a2232_port *port;
@@ -645,6 +649,8 @@
for (i = 0; i < MAX_A2232_BOARDS*NUMLINES; i++) {
port = a2232_ports + i;
+ tty_port_init(&port->gs.port);
+ port->gs.port.ops = &a2232_port_ops;
port->which_a2232 = i/NUMLINES;
port->which_port_on_a2232 = i%NUMLINES;
port->disable_rx = port->throttle_input = port->cd_status = 0;
@@ -652,11 +658,6 @@
port->gs.close_delay = HZ/2;
port->gs.closing_wait = 30 * HZ;
port->gs.rd = &a2232_real_driver;
-#ifdef NEW_WRITE_LOCKING
- mutex_init(&(port->gs.port_write_mutex));
-#endif
- init_waitqueue_head(&port->gs.port.open_wait);
- init_waitqueue_head(&port->gs.port.close_wait);
}
}
diff --git a/drivers/char/serial167.c b/drivers/char/serial167.c
index a8f15e6..f1f24f0 100644
--- a/drivers/char/serial167.c
+++ b/drivers/char/serial167.c
@@ -315,7 +315,7 @@
static void cy_stop(struct tty_struct *tty)
{
- struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
+ struct cyclades_port *info = tty->driver_data;
volatile unsigned char *base_addr = (unsigned char *)BASE_ADDR;
int channel;
unsigned long flags;
@@ -337,7 +337,7 @@
static void cy_start(struct tty_struct *tty)
{
- struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
+ struct cyclades_port *info = tty->driver_data;
volatile unsigned char *base_addr = (unsigned char *)BASE_ADDR;
int channel;
unsigned long flags;
@@ -1062,7 +1062,7 @@
static int cy_put_char(struct tty_struct *tty, unsigned char ch)
{
- struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
+ struct cyclades_port *info = tty->driver_data;
unsigned long flags;
#ifdef SERIAL_DEBUG_IO
@@ -1090,7 +1090,7 @@
static void cy_flush_chars(struct tty_struct *tty)
{
- struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
+ struct cyclades_port *info = tty->driver_data;
unsigned long flags;
volatile unsigned char *base_addr = (u_char *) BASE_ADDR;
int channel;
@@ -1122,7 +1122,7 @@
*/
static int cy_write(struct tty_struct *tty, const unsigned char *buf, int count)
{
- struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
+ struct cyclades_port *info = tty->driver_data;
unsigned long flags;
int c, total = 0;
@@ -1166,7 +1166,7 @@
static int cy_write_room(struct tty_struct *tty)
{
- struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
+ struct cyclades_port *info = tty->driver_data;
int ret;
#ifdef SERIAL_DEBUG_IO
@@ -1183,7 +1183,7 @@
static int cy_chars_in_buffer(struct tty_struct *tty)
{
- struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
+ struct cyclades_port *info = tty->driver_data;
#ifdef SERIAL_DEBUG_IO
printk("cy_chars_in_buffer %s %d\n", tty->name, info->xmit_cnt); /* */
@@ -1197,7 +1197,7 @@
static void cy_flush_buffer(struct tty_struct *tty)
{
- struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
+ struct cyclades_port *info = tty->driver_data;
unsigned long flags;
#ifdef SERIAL_DEBUG_IO
@@ -1218,7 +1218,7 @@
*/
static void cy_throttle(struct tty_struct *tty)
{
- struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
+ struct cyclades_port *info = tty->driver_data;
unsigned long flags;
volatile unsigned char *base_addr = (u_char *) BASE_ADDR;
int channel;
@@ -1250,7 +1250,7 @@
static void cy_unthrottle(struct tty_struct *tty)
{
- struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
+ struct cyclades_port *info = tty->driver_data;
unsigned long flags;
volatile unsigned char *base_addr = (u_char *) BASE_ADDR;
int channel;
@@ -1345,7 +1345,7 @@
static int cy_tiocmget(struct tty_struct *tty, struct file *file)
{
- struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
+ struct cyclades_port *info = tty->driver_data;
int channel;
volatile unsigned char *base_addr = (u_char *) BASE_ADDR;
unsigned long flags;
@@ -1369,7 +1369,7 @@
cy_tiocmset(struct tty_struct *tty, struct file *file,
unsigned int set, unsigned int clear)
{
- struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
+ struct cyclades_port *info = tty->driver_data;
int channel;
volatile unsigned char *base_addr = (u_char *) BASE_ADDR;
unsigned long flags;
@@ -1532,7 +1532,7 @@
unsigned int cmd, unsigned long arg)
{
unsigned long val;
- struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
+ struct cyclades_port *info = tty->driver_data;
int ret_val = 0;
void __user *argp = (void __user *)arg;
@@ -1607,7 +1607,7 @@
static void cy_set_termios(struct tty_struct *tty, struct ktermios *old_termios)
{
- struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
+ struct cyclades_port *info = tty->driver_data;
#ifdef SERIAL_DEBUG_OTHER
printk("cy_set_termios %s\n", tty->name);
@@ -1631,7 +1631,7 @@
static void cy_close(struct tty_struct *tty, struct file *filp)
{
- struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
+ struct cyclades_port *info = tty->driver_data;
/* CP('C'); */
#ifdef SERIAL_DEBUG_OTHER
@@ -1698,7 +1698,7 @@
*/
void cy_hangup(struct tty_struct *tty)
{
- struct cyclades_port *info = (struct cyclades_port *)tty->driver_data;
+ struct cyclades_port *info = tty->driver_data;
#ifdef SERIAL_DEBUG_OTHER
printk("cy_hangup %s\n", tty->name); /* */
diff --git a/drivers/char/specialix.c b/drivers/char/specialix.c
index a16b94f..3c67c3d 100644
--- a/drivers/char/specialix.c
+++ b/drivers/char/specialix.c
@@ -1450,7 +1450,7 @@
static void sx_flush_buffer(struct tty_struct *tty)
{
- struct specialix_port *port = (struct specialix_port *)tty->driver_data;
+ struct specialix_port *port = tty->driver_data;
unsigned long flags;
struct specialix_board *bp;
@@ -1472,7 +1472,7 @@
static void sx_close(struct tty_struct *tty, struct file *filp)
{
- struct specialix_port *port = (struct specialix_port *)tty->driver_data;
+ struct specialix_port *port = tty->driver_data;
struct specialix_board *bp;
unsigned long flags;
unsigned long timeout;
@@ -1585,7 +1585,7 @@
static int sx_write(struct tty_struct *tty,
const unsigned char *buf, int count)
{
- struct specialix_port *port = (struct specialix_port *)tty->driver_data;
+ struct specialix_port *port = tty->driver_data;
struct specialix_board *bp;
int c, total = 0;
unsigned long flags;
@@ -1637,7 +1637,7 @@
static int sx_put_char(struct tty_struct *tty, unsigned char ch)
{
- struct specialix_port *port = (struct specialix_port *)tty->driver_data;
+ struct specialix_port *port = tty->driver_data;
unsigned long flags;
struct specialix_board *bp;
@@ -1676,7 +1676,7 @@
static void sx_flush_chars(struct tty_struct *tty)
{
- struct specialix_port *port = (struct specialix_port *)tty->driver_data;
+ struct specialix_port *port = tty->driver_data;
unsigned long flags;
struct specialix_board *bp = port_Board(port);
@@ -1703,7 +1703,7 @@
static int sx_write_room(struct tty_struct *tty)
{
- struct specialix_port *port = (struct specialix_port *)tty->driver_data;
+ struct specialix_port *port = tty->driver_data;
int ret;
func_enter();
@@ -1724,7 +1724,7 @@
static int sx_chars_in_buffer(struct tty_struct *tty)
{
- struct specialix_port *port = (struct specialix_port *)tty->driver_data;
+ struct specialix_port *port = tty->driver_data;
func_enter();
@@ -1738,7 +1738,7 @@
static int sx_tiocmget(struct tty_struct *tty, struct file *file)
{
- struct specialix_port *port = (struct specialix_port *)tty->driver_data;
+ struct specialix_port *port = tty->driver_data;
struct specialix_board *bp;
unsigned char status;
unsigned int result;
@@ -1780,7 +1780,7 @@
static int sx_tiocmset(struct tty_struct *tty, struct file *file,
unsigned int set, unsigned int clear)
{
- struct specialix_port *port = (struct specialix_port *)tty->driver_data;
+ struct specialix_port *port = tty->driver_data;
unsigned long flags;
struct specialix_board *bp;
@@ -1820,7 +1820,7 @@
static int sx_send_break(struct tty_struct *tty, int length)
{
- struct specialix_port *port = (struct specialix_port *)tty->driver_data;
+ struct specialix_port *port = tty->driver_data;
struct specialix_board *bp = port_Board(port);
unsigned long flags;
@@ -1931,7 +1931,7 @@
static int sx_ioctl(struct tty_struct *tty, struct file *filp,
unsigned int cmd, unsigned long arg)
{
- struct specialix_port *port = (struct specialix_port *)tty->driver_data;
+ struct specialix_port *port = tty->driver_data;
void __user *argp = (void __user *)arg;
func_enter();
@@ -1959,7 +1959,7 @@
static void sx_throttle(struct tty_struct *tty)
{
- struct specialix_port *port = (struct specialix_port *)tty->driver_data;
+ struct specialix_port *port = tty->driver_data;
struct specialix_board *bp;
unsigned long flags;
@@ -2004,7 +2004,7 @@
static void sx_unthrottle(struct tty_struct *tty)
{
- struct specialix_port *port = (struct specialix_port *)tty->driver_data;
+ struct specialix_port *port = tty->driver_data;
struct specialix_board *bp;
unsigned long flags;
@@ -2045,7 +2045,7 @@
static void sx_stop(struct tty_struct *tty)
{
- struct specialix_port *port = (struct specialix_port *)tty->driver_data;
+ struct specialix_port *port = tty->driver_data;
struct specialix_board *bp;
unsigned long flags;
@@ -2072,7 +2072,7 @@
static void sx_start(struct tty_struct *tty)
{
- struct specialix_port *port = (struct specialix_port *)tty->driver_data;
+ struct specialix_port *port = tty->driver_data;
struct specialix_board *bp;
unsigned long flags;
@@ -2100,7 +2100,7 @@
static void sx_hangup(struct tty_struct *tty)
{
- struct specialix_port *port = (struct specialix_port *)tty->driver_data;
+ struct specialix_port *port = tty->driver_data;
struct specialix_board *bp;
unsigned long flags;
@@ -2135,7 +2135,7 @@
static void sx_set_termios(struct tty_struct *tty,
struct ktermios *old_termios)
{
- struct specialix_port *port = (struct specialix_port *)tty->driver_data;
+ struct specialix_port *port = tty->driver_data;
unsigned long flags;
struct specialix_board *bp;
diff --git a/drivers/char/stallion.c b/drivers/char/stallion.c
index 963b03f..e1e0dd8 100644
--- a/drivers/char/stallion.c
+++ b/drivers/char/stallion.c
@@ -130,6 +130,8 @@
static DEFINE_MUTEX(stl_brdslock);
static struct stlbrd *stl_brds[STL_MAXBRDS];
+static const struct tty_port_operations stl_port_ops;
+
/*
* Per board state flags. Used with the state field of the board struct.
* Not really much here!
@@ -407,7 +409,6 @@
static int stl_brdinit(struct stlbrd *brdp);
static int stl_getportstats(struct tty_struct *tty, struct stlport *portp, comstats_t __user *cp);
static int stl_clrportstats(struct stlport *portp, comstats_t __user *cp);
-static int stl_waitcarrier(struct tty_struct *tty, struct stlport *portp, struct file *filp);
/*
* CD1400 uart specific handling functions.
@@ -703,8 +704,9 @@
{
struct stlport *portp;
struct stlbrd *brdp;
+ struct tty_port *port;
unsigned int minordev, brdnr, panelnr;
- int portnr, rc;
+ int portnr;
pr_debug("stl_open(tty=%p,filp=%p): device=%s\n", tty, filp, tty->name);
@@ -715,6 +717,7 @@
brdp = stl_brds[brdnr];
if (brdp == NULL)
return -ENODEV;
+
minordev = MINOR2PORT(minordev);
for (portnr = -1, panelnr = 0; panelnr < STL_MAXPANELS; panelnr++) {
if (brdp->panels[panelnr] == NULL)
@@ -731,16 +734,17 @@
portp = brdp->panels[panelnr]->ports[portnr];
if (portp == NULL)
return -ENODEV;
+ port = &portp->port;
/*
* On the first open of the device setup the port hardware, and
* initialize the per port data structure.
*/
- tty_port_tty_set(&portp->port, tty);
+ tty_port_tty_set(port, tty);
tty->driver_data = portp;
- portp->port.count++;
+ port->count++;
- if ((portp->port.flags & ASYNC_INITIALIZED) == 0) {
+ if ((port->flags & ASYNC_INITIALIZED) == 0) {
if (!portp->tx.buf) {
portp->tx.buf = kmalloc(STL_TXBUFSIZE, GFP_KERNEL);
if (!portp->tx.buf)
@@ -754,91 +758,24 @@
stl_enablerxtx(portp, 1, 1);
stl_startrxtx(portp, 1, 0);
clear_bit(TTY_IO_ERROR, &tty->flags);
- portp->port.flags |= ASYNC_INITIALIZED;
+ port->flags |= ASYNC_INITIALIZED;
}
-
-/*
- * Check if this port is in the middle of closing. If so then wait
- * until it is closed then return error status, based on flag settings.
- * The sleep here does not need interrupt protection since the wakeup
- * for it is done with the same context.
- */
- if (portp->port.flags & ASYNC_CLOSING) {
- interruptible_sleep_on(&portp->port.close_wait);
- if (portp->port.flags & ASYNC_HUP_NOTIFY)
- return -EAGAIN;
- return -ERESTARTSYS;
- }
-
-/*
- * Based on type of open being done check if it can overlap with any
- * previous opens still in effect. If we are a normal serial device
- * then also we might have to wait for carrier.
- */
- if (!(filp->f_flags & O_NONBLOCK))
- if ((rc = stl_waitcarrier(tty, portp, filp)) != 0)
- return rc;
-
- portp->port.flags |= ASYNC_NORMAL_ACTIVE;
-
- return 0;
+ return tty_port_block_til_ready(port, tty, filp);
}
/*****************************************************************************/
-/*
- * Possibly need to wait for carrier (DCD signal) to come high. Say
- * maybe because if we are clocal then we don't need to wait...
- */
-
-static int stl_waitcarrier(struct tty_struct *tty, struct stlport *portp,
- struct file *filp)
+static int stl_carrier_raised(struct tty_port *port)
{
- unsigned long flags;
- int rc, doclocal;
+ struct stlport *portp = container_of(port, struct stlport, port);
+ return (portp->sigs & TIOCM_CD) ? 1 : 0;
+}
- pr_debug("stl_waitcarrier(portp=%p,filp=%p)\n", portp, filp);
-
- rc = 0;
- doclocal = 0;
-
- spin_lock_irqsave(&stallion_lock, flags);
-
- if (tty->termios->c_cflag & CLOCAL)
- doclocal++;
-
- portp->openwaitcnt++;
- if (! tty_hung_up_p(filp))
- portp->port.count--;
-
- for (;;) {
- /* Takes brd_lock internally */
- stl_setsignals(portp, 1, 1);
- if (tty_hung_up_p(filp) ||
- ((portp->port.flags & ASYNC_INITIALIZED) == 0)) {
- if (portp->port.flags & ASYNC_HUP_NOTIFY)
- rc = -EBUSY;
- else
- rc = -ERESTARTSYS;
- break;
- }
- if (((portp->port.flags & ASYNC_CLOSING) == 0) &&
- (doclocal || (portp->sigs & TIOCM_CD)))
- break;
- if (signal_pending(current)) {
- rc = -ERESTARTSYS;
- break;
- }
- /* FIXME */
- interruptible_sleep_on(&portp->port.open_wait);
- }
-
- if (! tty_hung_up_p(filp))
- portp->port.count++;
- portp->openwaitcnt--;
- spin_unlock_irqrestore(&stallion_lock, flags);
-
- return rc;
+static void stl_raise_dtr_rts(struct tty_port *port)
+{
+ struct stlport *portp = container_of(port, struct stlport, port);
+ /* Takes brd_lock internally */
+ stl_setsignals(portp, 1, 1);
}
/*****************************************************************************/
@@ -890,47 +827,29 @@
static void stl_close(struct tty_struct *tty, struct file *filp)
{
struct stlport *portp;
+ struct tty_port *port;
unsigned long flags;
pr_debug("stl_close(tty=%p,filp=%p)\n", tty, filp);
portp = tty->driver_data;
- if (portp == NULL)
- return;
+ BUG_ON(portp == NULL);
- spin_lock_irqsave(&stallion_lock, flags);
- if (tty_hung_up_p(filp)) {
- spin_unlock_irqrestore(&stallion_lock, flags);
- return;
- }
- if ((tty->count == 1) && (portp->port.count != 1))
- portp->port.count = 1;
- if (portp->port.count-- > 1) {
- spin_unlock_irqrestore(&stallion_lock, flags);
- return;
- }
+ port = &portp->port;
- portp->port.count = 0;
- portp->port.flags |= ASYNC_CLOSING;
-
+ if (tty_port_close_start(port, tty, filp) == 0)
+ return;
/*
* May want to wait for any data to drain before closing. The BUSY
* flag keeps track of whether we are still sending or not - it is
* very accurate for the cd1400, not quite so for the sc26198.
* (The sc26198 has no "end-of-data" interrupt only empty FIFO)
*/
- tty->closing = 1;
-
- spin_unlock_irqrestore(&stallion_lock, flags);
-
- if (portp->closing_wait != ASYNC_CLOSING_WAIT_NONE)
- tty_wait_until_sent(tty, portp->closing_wait);
stl_waituntilsent(tty, (HZ / 2));
-
- spin_lock_irqsave(&stallion_lock, flags);
+ spin_lock_irqsave(&port->lock, flags);
portp->port.flags &= ~ASYNC_INITIALIZED;
- spin_unlock_irqrestore(&stallion_lock, flags);
+ spin_unlock_irqrestore(&port->lock, flags);
stl_disableintrs(portp);
if (tty->termios->c_cflag & HUPCL)
@@ -944,20 +863,9 @@
portp->tx.head = NULL;
portp->tx.tail = NULL;
}
- set_bit(TTY_IO_ERROR, &tty->flags);
- tty_ldisc_flush(tty);
- tty->closing = 0;
- tty_port_tty_set(&portp->port, NULL);
-
- if (portp->openwaitcnt) {
- if (portp->close_delay)
- msleep_interruptible(jiffies_to_msecs(portp->close_delay));
- wake_up_interruptible(&portp->port.open_wait);
- }
-
- portp->port.flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
- wake_up_interruptible(&portp->port.close_wait);
+ tty_port_close_end(port, tty);
+ tty_port_tty_set(port, NULL);
}
/*****************************************************************************/
@@ -1405,14 +1313,20 @@
static void stl_hangup(struct tty_struct *tty)
{
struct stlport *portp;
+ struct tty_port *port;
+ unsigned long flags;
pr_debug("stl_hangup(tty=%p)\n", tty);
portp = tty->driver_data;
if (portp == NULL)
return;
+ port = &portp->port;
- portp->port.flags &= ~ASYNC_INITIALIZED;
+ spin_lock_irqsave(&port->lock, flags);
+ port->flags &= ~ASYNC_INITIALIZED;
+ spin_unlock_irqrestore(&port->lock, flags);
+
stl_disableintrs(portp);
if (tty->termios->c_cflag & HUPCL)
stl_setsignals(portp, 0, 0);
@@ -1426,10 +1340,7 @@
portp->tx.head = NULL;
portp->tx.tail = NULL;
}
- tty_port_tty_set(&portp->port, NULL);
- portp->port.flags &= ~ASYNC_NORMAL_ACTIVE;
- portp->port.count = 0;
- wake_up_interruptible(&portp->port.open_wait);
+ tty_port_hangup(port);
}
/*****************************************************************************/
@@ -1776,6 +1687,7 @@
break;
}
tty_port_init(&portp->port);
+ portp->port.ops = &stl_port_ops;
portp->magic = STL_PORTMAGIC;
portp->portnr = i;
portp->brdnr = panelp->brdnr;
@@ -2659,6 +2571,11 @@
.tiocmset = stl_tiocmset,
};
+static const struct tty_port_operations stl_port_ops = {
+ .carrier_raised = stl_carrier_raised,
+ .raise_dtr_rts = stl_raise_dtr_rts,
+};
+
/*****************************************************************************/
/* CD1400 HARDWARE FUNCTIONS */
/*****************************************************************************/
diff --git a/drivers/char/sx.c b/drivers/char/sx.c
index ba4e862..b60be7b 100644
--- a/drivers/char/sx.c
+++ b/drivers/char/sx.c
@@ -279,7 +279,7 @@
static void sx_enable_tx_interrupts(void *ptr);
static void sx_disable_rx_interrupts(void *ptr);
static void sx_enable_rx_interrupts(void *ptr);
-static int sx_get_CD(void *ptr);
+static int sx_carrier_raised(struct tty_port *port);
static void sx_shutdown_port(void *ptr);
static int sx_set_real_termios(void *ptr);
static void sx_close(void *ptr);
@@ -360,7 +360,6 @@
sx_enable_tx_interrupts,
sx_disable_rx_interrupts,
sx_enable_rx_interrupts,
- sx_get_CD,
sx_shutdown_port,
sx_set_real_termios,
sx_chars_in_buffer,
@@ -791,7 +790,7 @@
sx_dprintk(SX_DEBUG_MODEMSIGNALS, "getsignals: %d/%d (%d/%d) "
"%02x/%02x\n",
(o_stat & OP_DTR) != 0, (o_stat & OP_RTS) != 0,
- port->c_dcd, sx_get_CD(port),
+ port->c_dcd, tty_port_carrier_raised(&port->gs.port),
sx_read_channel_byte(port, hi_ip),
sx_read_channel_byte(port, hi_state));
@@ -1190,7 +1189,7 @@
hi_state = sx_read_channel_byte(port, hi_state);
sx_dprintk(SX_DEBUG_MODEMSIGNALS, "Checking modem signals (%d/%d)\n",
- port->c_dcd, sx_get_CD(port));
+ port->c_dcd, tty_port_carrier_raised(&port->gs.port));
if (hi_state & ST_BREAK) {
hi_state &= ~ST_BREAK;
@@ -1202,11 +1201,11 @@
hi_state &= ~ST_DCD;
sx_dprintk(SX_DEBUG_MODEMSIGNALS, "got a DCD change.\n");
sx_write_channel_byte(port, hi_state, hi_state);
- c_dcd = sx_get_CD(port);
+ c_dcd = tty_port_carrier_raised(&port->gs.port);
sx_dprintk(SX_DEBUG_MODEMSIGNALS, "DCD is now %d\n", c_dcd);
if (c_dcd != port->c_dcd) {
port->c_dcd = c_dcd;
- if (sx_get_CD(port)) {
+ if (tty_port_carrier_raised(&port->gs.port)) {
/* DCD went UP */
if ((sx_read_channel_byte(port, hi_hstat) !=
HS_IDLE_CLOSED) &&
@@ -1415,13 +1414,10 @@
}
/* Jeez. Isn't this simple? */
-static int sx_get_CD(void *ptr)
+static int sx_carrier_raised(struct tty_port *port)
{
- struct sx_port *port = ptr;
- func_enter2();
-
- func_exit();
- return ((sx_read_channel_byte(port, hi_ip) & IP_DCD) != 0);
+ struct sx_port *sp = container_of(port, struct sx_port, gs.port);
+ return ((sx_read_channel_byte(sp, hi_ip) & IP_DCD) != 0);
}
/* Jeez. Isn't this simple? */
@@ -1536,7 +1532,7 @@
}
/* tty->low_latency = 1; */
- port->c_dcd = sx_get_CD(port);
+ port->c_dcd = sx_carrier_raised(&port->gs.port);
sx_dprintk(SX_DEBUG_OPEN, "at open: cd=%d\n", port->c_dcd);
func_exit();
@@ -1945,7 +1941,7 @@
static void sx_throttle(struct tty_struct *tty)
{
- struct sx_port *port = (struct sx_port *)tty->driver_data;
+ struct sx_port *port = tty->driver_data;
func_enter2();
/* If the port is using any type of input flow
@@ -1959,7 +1955,7 @@
static void sx_unthrottle(struct tty_struct *tty)
{
- struct sx_port *port = (struct sx_port *)tty->driver_data;
+ struct sx_port *port = tty->driver_data;
func_enter2();
/* Always unthrottle even if flow control is not enabled on
@@ -2354,6 +2350,10 @@
.tiocmset = sx_tiocmset,
};
+static const struct tty_port_operations sx_port_ops = {
+ .carrier_raised = sx_carrier_raised,
+};
+
static int sx_init_drivers(void)
{
int error;
@@ -2410,6 +2410,7 @@
for (j = 0; j < boards[i].nports; j++) {
sx_dprintk(SX_DEBUG_INIT, "initing port %d\n", j);
tty_port_init(&port->gs.port);
+ port->gs.port.ops = &sx_port_ops;
port->gs.magic = SX_MAGIC;
port->gs.close_delay = HZ / 2;
port->gs.closing_wait = 30 * HZ;
diff --git a/drivers/char/synclink.c b/drivers/char/synclink.c
index 500f517..b8063d4 100644
--- a/drivers/char/synclink.c
+++ b/drivers/char/synclink.c
@@ -977,7 +977,7 @@
*/
static void mgsl_stop(struct tty_struct *tty)
{
- struct mgsl_struct *info = (struct mgsl_struct *)tty->driver_data;
+ struct mgsl_struct *info = tty->driver_data;
unsigned long flags;
if (mgsl_paranoia_check(info, tty->name, "mgsl_stop"))
@@ -1000,7 +1000,7 @@
*/
static void mgsl_start(struct tty_struct *tty)
{
- struct mgsl_struct *info = (struct mgsl_struct *)tty->driver_data;
+ struct mgsl_struct *info = tty->driver_data;
unsigned long flags;
if (mgsl_paranoia_check(info, tty->name, "mgsl_start"))
@@ -2057,7 +2057,7 @@
*/
static void mgsl_flush_chars(struct tty_struct *tty)
{
- struct mgsl_struct *info = (struct mgsl_struct *)tty->driver_data;
+ struct mgsl_struct *info = tty->driver_data;
unsigned long flags;
if ( debug_level >= DEBUG_LEVEL_INFO )
@@ -2109,7 +2109,7 @@
const unsigned char *buf, int count)
{
int c, ret = 0;
- struct mgsl_struct *info = (struct mgsl_struct *)tty->driver_data;
+ struct mgsl_struct *info = tty->driver_data;
unsigned long flags;
if ( debug_level >= DEBUG_LEVEL_INFO )
@@ -2232,7 +2232,7 @@
*/
static int mgsl_write_room(struct tty_struct *tty)
{
- struct mgsl_struct *info = (struct mgsl_struct *)tty->driver_data;
+ struct mgsl_struct *info = tty->driver_data;
int ret;
if (mgsl_paranoia_check(info, tty->name, "mgsl_write_room"))
@@ -2267,7 +2267,7 @@
*/
static int mgsl_chars_in_buffer(struct tty_struct *tty)
{
- struct mgsl_struct *info = (struct mgsl_struct *)tty->driver_data;
+ struct mgsl_struct *info = tty->driver_data;
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):mgsl_chars_in_buffer(%s)\n",
@@ -2301,7 +2301,7 @@
*/
static void mgsl_flush_buffer(struct tty_struct *tty)
{
- struct mgsl_struct *info = (struct mgsl_struct *)tty->driver_data;
+ struct mgsl_struct *info = tty->driver_data;
unsigned long flags;
if (debug_level >= DEBUG_LEVEL_INFO)
@@ -2329,7 +2329,7 @@
*/
static void mgsl_send_xchar(struct tty_struct *tty, char ch)
{
- struct mgsl_struct *info = (struct mgsl_struct *)tty->driver_data;
+ struct mgsl_struct *info = tty->driver_data;
unsigned long flags;
if (debug_level >= DEBUG_LEVEL_INFO)
@@ -2358,7 +2358,7 @@
*/
static void mgsl_throttle(struct tty_struct * tty)
{
- struct mgsl_struct *info = (struct mgsl_struct *)tty->driver_data;
+ struct mgsl_struct *info = tty->driver_data;
unsigned long flags;
if (debug_level >= DEBUG_LEVEL_INFO)
@@ -2388,7 +2388,7 @@
*/
static void mgsl_unthrottle(struct tty_struct * tty)
{
- struct mgsl_struct *info = (struct mgsl_struct *)tty->driver_data;
+ struct mgsl_struct *info = tty->driver_data;
unsigned long flags;
if (debug_level >= DEBUG_LEVEL_INFO)
@@ -2841,7 +2841,7 @@
*/
static int tiocmget(struct tty_struct *tty, struct file *file)
{
- struct mgsl_struct *info = (struct mgsl_struct *)tty->driver_data;
+ struct mgsl_struct *info = tty->driver_data;
unsigned int result;
unsigned long flags;
@@ -2867,7 +2867,7 @@
static int tiocmset(struct tty_struct *tty, struct file *file,
unsigned int set, unsigned int clear)
{
- struct mgsl_struct *info = (struct mgsl_struct *)tty->driver_data;
+ struct mgsl_struct *info = tty->driver_data;
unsigned long flags;
if (debug_level >= DEBUG_LEVEL_INFO)
@@ -2898,7 +2898,7 @@
*/
static int mgsl_break(struct tty_struct *tty, int break_state)
{
- struct mgsl_struct * info = (struct mgsl_struct *)tty->driver_data;
+ struct mgsl_struct * info = tty->driver_data;
unsigned long flags;
if (debug_level >= DEBUG_LEVEL_INFO)
@@ -2932,7 +2932,7 @@
static int mgsl_ioctl(struct tty_struct *tty, struct file * file,
unsigned int cmd, unsigned long arg)
{
- struct mgsl_struct * info = (struct mgsl_struct *)tty->driver_data;
+ struct mgsl_struct * info = tty->driver_data;
int ret;
if (debug_level >= DEBUG_LEVEL_INFO)
@@ -3042,7 +3042,7 @@
*/
static void mgsl_set_termios(struct tty_struct *tty, struct ktermios *old_termios)
{
- struct mgsl_struct *info = (struct mgsl_struct *)tty->driver_data;
+ struct mgsl_struct *info = tty->driver_data;
unsigned long flags;
if (debug_level >= DEBUG_LEVEL_INFO)
@@ -3096,7 +3096,7 @@
*/
static void mgsl_close(struct tty_struct *tty, struct file * filp)
{
- struct mgsl_struct * info = (struct mgsl_struct *)tty->driver_data;
+ struct mgsl_struct * info = tty->driver_data;
if (mgsl_paranoia_check(info, tty->name, "mgsl_close"))
return;
@@ -3104,70 +3104,18 @@
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):mgsl_close(%s) entry, count=%d\n",
__FILE__,__LINE__, info->device_name, info->port.count);
-
- if (!info->port.count)
- return;
- if (tty_hung_up_p(filp))
+ if (tty_port_close_start(&info->port, tty, filp) == 0)
goto cleanup;
- if ((tty->count == 1) && (info->port.count != 1)) {
- /*
- * tty->count is 1 and the tty structure will be freed.
- * info->port.count should be one in this case.
- * if it's not, correct it so that the port is shutdown.
- */
- printk("mgsl_close: bad refcount; tty->count is 1, "
- "info->port.count is %d\n", info->port.count);
- info->port.count = 1;
- }
-
- info->port.count--;
-
- /* if at least one open remaining, leave hardware active */
- if (info->port.count)
- goto cleanup;
-
- info->port.flags |= ASYNC_CLOSING;
-
- /* set tty->closing to notify line discipline to
- * only process XON/XOFF characters. Only the N_TTY
- * discipline appears to use this (ppp does not).
- */
- tty->closing = 1;
-
- /* wait for transmit data to clear all layers */
-
- if (info->port.closing_wait != ASYNC_CLOSING_WAIT_NONE) {
- if (debug_level >= DEBUG_LEVEL_INFO)
- printk("%s(%d):mgsl_close(%s) calling tty_wait_until_sent\n",
- __FILE__,__LINE__, info->device_name );
- tty_wait_until_sent(tty, info->port.closing_wait);
- }
-
if (info->port.flags & ASYNC_INITIALIZED)
mgsl_wait_until_sent(tty, info->timeout);
-
mgsl_flush_buffer(tty);
-
tty_ldisc_flush(tty);
-
shutdown(info);
-
- tty->closing = 0;
+
+ tty_port_close_end(&info->port, tty);
info->port.tty = NULL;
-
- if (info->port.blocked_open) {
- if (info->port.close_delay) {
- msleep_interruptible(jiffies_to_msecs(info->port.close_delay));
- }
- wake_up_interruptible(&info->port.open_wait);
- }
-
- info->port.flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
-
- wake_up_interruptible(&info->port.close_wait);
-
cleanup:
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):mgsl_close(%s) exit, count=%d\n", __FILE__,__LINE__,
@@ -3188,7 +3136,7 @@
*/
static void mgsl_wait_until_sent(struct tty_struct *tty, int timeout)
{
- struct mgsl_struct * info = (struct mgsl_struct *)tty->driver_data;
+ struct mgsl_struct * info = tty->driver_data;
unsigned long orig_jiffies, char_time;
if (!info )
@@ -3261,7 +3209,7 @@
*/
static void mgsl_hangup(struct tty_struct *tty)
{
- struct mgsl_struct * info = (struct mgsl_struct *)tty->driver_data;
+ struct mgsl_struct * info = tty->driver_data;
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):mgsl_hangup(%s)\n",
@@ -3281,6 +3229,35 @@
} /* end of mgsl_hangup() */
+/*
+ * carrier_raised()
+ *
+ * Return true if carrier is raised
+ */
+
+static int carrier_raised(struct tty_port *port)
+{
+ unsigned long flags;
+ struct mgsl_struct *info = container_of(port, struct mgsl_struct, port);
+
+ spin_lock_irqsave(&info->irq_spinlock, flags);
+ usc_get_serial_signals(info);
+ spin_unlock_irqrestore(&info->irq_spinlock, flags);
+ return (info->serial_signals & SerialSignal_DCD) ? 1 : 0;
+}
+
+static void raise_dtr_rts(struct tty_port *port)
+{
+ struct mgsl_struct *info = container_of(port, struct mgsl_struct, port);
+ unsigned long flags;
+
+ spin_lock_irqsave(&info->irq_spinlock,flags);
+ info->serial_signals |= SerialSignal_RTS + SerialSignal_DTR;
+ usc_set_serial_signals(info);
+ spin_unlock_irqrestore(&info->irq_spinlock,flags);
+}
+
+
/* block_til_ready()
*
* Block the current process until the specified port
@@ -3302,6 +3279,8 @@
bool do_clocal = false;
bool extra_count = false;
unsigned long flags;
+ int dcd;
+ struct tty_port *port = &info->port;
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):block_til_ready on %s\n",
@@ -3309,7 +3288,7 @@
if (filp->f_flags & O_NONBLOCK || tty->flags & (1 << TTY_IO_ERROR)){
/* nonblock mode is set or port is not enabled */
- info->port.flags |= ASYNC_NORMAL_ACTIVE;
+ port->flags |= ASYNC_NORMAL_ACTIVE;
return 0;
}
@@ -3318,50 +3297,42 @@
/* Wait for carrier detect and the line to become
* free (i.e., not in use by the callout). While we are in
- * this loop, info->port.count is dropped by one, so that
+ * this loop, port->count is dropped by one, so that
* mgsl_close() knows when to free things. We restore it upon
* exit, either normal or abnormal.
*/
retval = 0;
- add_wait_queue(&info->port.open_wait, &wait);
+ add_wait_queue(&port->open_wait, &wait);
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):block_til_ready before block on %s count=%d\n",
- __FILE__,__LINE__, tty->driver->name, info->port.count );
+ __FILE__,__LINE__, tty->driver->name, port->count );
spin_lock_irqsave(&info->irq_spinlock, flags);
if (!tty_hung_up_p(filp)) {
extra_count = true;
- info->port.count--;
+ port->count--;
}
spin_unlock_irqrestore(&info->irq_spinlock, flags);
- info->port.blocked_open++;
+ port->blocked_open++;
while (1) {
- if (tty->termios->c_cflag & CBAUD) {
- spin_lock_irqsave(&info->irq_spinlock,flags);
- info->serial_signals |= SerialSignal_RTS + SerialSignal_DTR;
- usc_set_serial_signals(info);
- spin_unlock_irqrestore(&info->irq_spinlock,flags);
- }
+ if (tty->termios->c_cflag & CBAUD)
+ tty_port_raise_dtr_rts(port);
set_current_state(TASK_INTERRUPTIBLE);
- if (tty_hung_up_p(filp) || !(info->port.flags & ASYNC_INITIALIZED)){
- retval = (info->port.flags & ASYNC_HUP_NOTIFY) ?
+ if (tty_hung_up_p(filp) || !(port->flags & ASYNC_INITIALIZED)){
+ retval = (port->flags & ASYNC_HUP_NOTIFY) ?
-EAGAIN : -ERESTARTSYS;
break;
}
- spin_lock_irqsave(&info->irq_spinlock,flags);
- usc_get_serial_signals(info);
- spin_unlock_irqrestore(&info->irq_spinlock,flags);
+ dcd = tty_port_carrier_raised(&info->port);
- if (!(info->port.flags & ASYNC_CLOSING) &&
- (do_clocal || (info->serial_signals & SerialSignal_DCD)) ) {
+ if (!(port->flags & ASYNC_CLOSING) && (do_clocal || dcd))
break;
- }
if (signal_pending(current)) {
retval = -ERESTARTSYS;
@@ -3370,24 +3341,25 @@
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):block_til_ready blocking on %s count=%d\n",
- __FILE__,__LINE__, tty->driver->name, info->port.count );
+ __FILE__,__LINE__, tty->driver->name, port->count );
schedule();
}
set_current_state(TASK_RUNNING);
- remove_wait_queue(&info->port.open_wait, &wait);
+ remove_wait_queue(&port->open_wait, &wait);
+ /* FIXME: Racy on hangup during close wait */
if (extra_count)
- info->port.count++;
- info->port.blocked_open--;
+ port->count++;
+ port->blocked_open--;
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):block_til_ready after blocking on %s count=%d\n",
- __FILE__,__LINE__, tty->driver->name, info->port.count );
+ __FILE__,__LINE__, tty->driver->name, port->count );
if (!retval)
- info->port.flags |= ASYNC_NORMAL_ACTIVE;
+ port->flags |= ASYNC_NORMAL_ACTIVE;
return retval;
@@ -4304,6 +4276,12 @@
} /* end of mgsl_add_device() */
+static const struct tty_port_operations mgsl_port_ops = {
+ .carrier_raised = carrier_raised,
+ .raise_dtr_rts = raise_dtr_rts,
+};
+
+
/* mgsl_allocate_device()
*
* Allocate and initialize a device instance structure
@@ -4322,6 +4300,7 @@
printk("Error can't allocate device instance data\n");
} else {
tty_port_init(&info->port);
+ info->port.ops = &mgsl_port_ops;
info->magic = MGSL_MAGIC;
INIT_WORK(&info->task, mgsl_bh_handler);
info->max_frame_size = 4096;
diff --git a/drivers/char/synclink_gt.c b/drivers/char/synclink_gt.c
index 08911ed..53544e2 100644
--- a/drivers/char/synclink_gt.c
+++ b/drivers/char/synclink_gt.c
@@ -720,44 +720,9 @@
return;
DBGINFO(("%s close entry, count=%d\n", info->device_name, info->port.count));
- if (!info->port.count)
- return;
-
- if (tty_hung_up_p(filp))
+ if (tty_port_close_start(&info->port, tty, filp) == 0)
goto cleanup;
- if ((tty->count == 1) && (info->port.count != 1)) {
- /*
- * tty->count is 1 and the tty structure will be freed.
- * info->port.count should be one in this case.
- * if it's not, correct it so that the port is shutdown.
- */
- DBGERR(("%s close: bad refcount; tty->count=1, "
- "info->port.count=%d\n", info->device_name, info->port.count));
- info->port.count = 1;
- }
-
- info->port.count--;
-
- /* if at least one open remaining, leave hardware active */
- if (info->port.count)
- goto cleanup;
-
- info->port.flags |= ASYNC_CLOSING;
-
- /* set tty->closing to notify line discipline to
- * only process XON/XOFF characters. Only the N_TTY
- * discipline appears to use this (ppp does not).
- */
- tty->closing = 1;
-
- /* wait for transmit data to clear all layers */
-
- if (info->port.closing_wait != ASYNC_CLOSING_WAIT_NONE) {
- DBGINFO(("%s call tty_wait_until_sent\n", info->device_name));
- tty_wait_until_sent(tty, info->port.closing_wait);
- }
-
if (info->port.flags & ASYNC_INITIALIZED)
wait_until_sent(tty, info->timeout);
flush_buffer(tty);
@@ -765,20 +730,8 @@
shutdown(info);
- tty->closing = 0;
+ tty_port_close_end(&info->port, tty);
info->port.tty = NULL;
-
- if (info->port.blocked_open) {
- if (info->port.close_delay) {
- msleep_interruptible(jiffies_to_msecs(info->port.close_delay));
- }
- wake_up_interruptible(&info->port.open_wait);
- }
-
- info->port.flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
-
- wake_up_interruptible(&info->port.close_wait);
-
cleanup:
DBGINFO(("%s close exit, count=%d\n", tty->driver->name, info->port.count));
}
@@ -3132,6 +3085,29 @@
return 0;
}
+static int carrier_raised(struct tty_port *port)
+{
+ unsigned long flags;
+ struct slgt_info *info = container_of(port, struct slgt_info, port);
+
+ spin_lock_irqsave(&info->lock,flags);
+ get_signals(info);
+ spin_unlock_irqrestore(&info->lock,flags);
+ return (info->signals & SerialSignal_DCD) ? 1 : 0;
+}
+
+static void raise_dtr_rts(struct tty_port *port)
+{
+ unsigned long flags;
+ struct slgt_info *info = container_of(port, struct slgt_info, port);
+
+ spin_lock_irqsave(&info->lock,flags);
+ info->signals |= SerialSignal_RTS + SerialSignal_DTR;
+ set_signals(info);
+ spin_unlock_irqrestore(&info->lock,flags);
+}
+
+
/*
* block current process until the device is ready to open
*/
@@ -3143,12 +3119,14 @@
bool do_clocal = false;
bool extra_count = false;
unsigned long flags;
+ int cd;
+ struct tty_port *port = &info->port;
DBGINFO(("%s block_til_ready\n", tty->driver->name));
if (filp->f_flags & O_NONBLOCK || tty->flags & (1 << TTY_IO_ERROR)){
/* nonblock mode is set or port is not enabled */
- info->port.flags |= ASYNC_NORMAL_ACTIVE;
+ port->flags |= ASYNC_NORMAL_ACTIVE;
return 0;
}
@@ -3157,46 +3135,38 @@
/* Wait for carrier detect and the line to become
* free (i.e., not in use by the callout). While we are in
- * this loop, info->port.count is dropped by one, so that
+ * this loop, port->count is dropped by one, so that
* close() knows when to free things. We restore it upon
* exit, either normal or abnormal.
*/
retval = 0;
- add_wait_queue(&info->port.open_wait, &wait);
+ add_wait_queue(&port->open_wait, &wait);
spin_lock_irqsave(&info->lock, flags);
if (!tty_hung_up_p(filp)) {
extra_count = true;
- info->port.count--;
+ port->count--;
}
spin_unlock_irqrestore(&info->lock, flags);
- info->port.blocked_open++;
+ port->blocked_open++;
while (1) {
- if ((tty->termios->c_cflag & CBAUD)) {
- spin_lock_irqsave(&info->lock,flags);
- info->signals |= SerialSignal_RTS + SerialSignal_DTR;
- set_signals(info);
- spin_unlock_irqrestore(&info->lock,flags);
- }
+ if ((tty->termios->c_cflag & CBAUD))
+ tty_port_raise_dtr_rts(port);
set_current_state(TASK_INTERRUPTIBLE);
- if (tty_hung_up_p(filp) || !(info->port.flags & ASYNC_INITIALIZED)){
- retval = (info->port.flags & ASYNC_HUP_NOTIFY) ?
+ if (tty_hung_up_p(filp) || !(port->flags & ASYNC_INITIALIZED)){
+ retval = (port->flags & ASYNC_HUP_NOTIFY) ?
-EAGAIN : -ERESTARTSYS;
break;
}
- spin_lock_irqsave(&info->lock,flags);
- get_signals(info);
- spin_unlock_irqrestore(&info->lock,flags);
+ cd = tty_port_carrier_raised(port);
- if (!(info->port.flags & ASYNC_CLOSING) &&
- (do_clocal || (info->signals & SerialSignal_DCD)) ) {
+ if (!(port->flags & ASYNC_CLOSING) && (do_clocal || cd ))
break;
- }
if (signal_pending(current)) {
retval = -ERESTARTSYS;
@@ -3208,14 +3178,14 @@
}
set_current_state(TASK_RUNNING);
- remove_wait_queue(&info->port.open_wait, &wait);
+ remove_wait_queue(&port->open_wait, &wait);
if (extra_count)
- info->port.count++;
- info->port.blocked_open--;
+ port->count++;
+ port->blocked_open--;
if (!retval)
- info->port.flags |= ASYNC_NORMAL_ACTIVE;
+ port->flags |= ASYNC_NORMAL_ACTIVE;
DBGINFO(("%s block_til_ready ready, rc=%d\n", tty->driver->name, retval));
return retval;
@@ -3444,6 +3414,11 @@
#endif
}
+static const struct tty_port_operations slgt_port_ops = {
+ .carrier_raised = carrier_raised,
+ .raise_dtr_rts = raise_dtr_rts,
+};
+
/*
* allocate device instance structure, return NULL on failure
*/
@@ -3458,6 +3433,7 @@
driver_name, adapter_num, port_num));
} else {
tty_port_init(&info->port);
+ info->port.ops = &slgt_port_ops;
info->magic = MGSL_MAGIC;
INIT_WORK(&info->task, bh_handler);
info->max_frame_size = 4096;
diff --git a/drivers/char/synclinkmp.c b/drivers/char/synclinkmp.c
index 6bdb44f..7b0c5b2 100644
--- a/drivers/char/synclinkmp.c
+++ b/drivers/char/synclinkmp.c
@@ -558,6 +558,7 @@
static int startup(SLMP_INFO *info);
static int block_til_ready(struct tty_struct *tty, struct file * filp,SLMP_INFO *info);
+static int carrier_raised(struct tty_port *port);
static void shutdown(SLMP_INFO *info);
static void program_hw(SLMP_INFO *info);
static void change_params(SLMP_INFO *info);
@@ -800,7 +801,7 @@
*/
static void close(struct tty_struct *tty, struct file *filp)
{
- SLMP_INFO * info = (SLMP_INFO *)tty->driver_data;
+ SLMP_INFO * info = tty->driver_data;
if (sanity_check(info, tty->name, "close"))
return;
@@ -809,70 +810,18 @@
printk("%s(%d):%s close() entry, count=%d\n",
__FILE__,__LINE__, info->device_name, info->port.count);
- if (!info->port.count)
- return;
-
- if (tty_hung_up_p(filp))
+ if (tty_port_close_start(&info->port, tty, filp) == 0)
goto cleanup;
-
- if ((tty->count == 1) && (info->port.count != 1)) {
- /*
- * tty->count is 1 and the tty structure will be freed.
- * info->port.count should be one in this case.
- * if it's not, correct it so that the port is shutdown.
- */
- printk("%s(%d):%s close: bad refcount; tty->count is 1, "
- "info->port.count is %d\n",
- __FILE__,__LINE__, info->device_name, info->port.count);
- info->port.count = 1;
- }
-
- info->port.count--;
-
- /* if at least one open remaining, leave hardware active */
- if (info->port.count)
- goto cleanup;
-
- info->port.flags |= ASYNC_CLOSING;
-
- /* set tty->closing to notify line discipline to
- * only process XON/XOFF characters. Only the N_TTY
- * discipline appears to use this (ppp does not).
- */
- tty->closing = 1;
-
- /* wait for transmit data to clear all layers */
-
- if (info->port.closing_wait != ASYNC_CLOSING_WAIT_NONE) {
- if (debug_level >= DEBUG_LEVEL_INFO)
- printk("%s(%d):%s close() calling tty_wait_until_sent\n",
- __FILE__,__LINE__, info->device_name );
- tty_wait_until_sent(tty, info->port.closing_wait);
- }
-
+
if (info->port.flags & ASYNC_INITIALIZED)
wait_until_sent(tty, info->timeout);
flush_buffer(tty);
-
tty_ldisc_flush(tty);
-
shutdown(info);
- tty->closing = 0;
+ tty_port_close_end(&info->port, tty);
info->port.tty = NULL;
-
- if (info->port.blocked_open) {
- if (info->port.close_delay) {
- msleep_interruptible(jiffies_to_msecs(info->port.close_delay));
- }
- wake_up_interruptible(&info->port.open_wait);
- }
-
- info->port.flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
-
- wake_up_interruptible(&info->port.close_wait);
-
cleanup:
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):%s close() exit, count=%d\n", __FILE__,__LINE__,
@@ -884,7 +833,7 @@
*/
static void hangup(struct tty_struct *tty)
{
- SLMP_INFO *info = (SLMP_INFO *)tty->driver_data;
+ SLMP_INFO *info = tty->driver_data;
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):%s hangup()\n",
@@ -907,7 +856,7 @@
*/
static void set_termios(struct tty_struct *tty, struct ktermios *old_termios)
{
- SLMP_INFO *info = (SLMP_INFO *)tty->driver_data;
+ SLMP_INFO *info = tty->driver_data;
unsigned long flags;
if (debug_level >= DEBUG_LEVEL_INFO)
@@ -960,7 +909,7 @@
const unsigned char *buf, int count)
{
int c, ret = 0;
- SLMP_INFO *info = (SLMP_INFO *)tty->driver_data;
+ SLMP_INFO *info = tty->driver_data;
unsigned long flags;
if (debug_level >= DEBUG_LEVEL_INFO)
@@ -1038,7 +987,7 @@
*/
static int put_char(struct tty_struct *tty, unsigned char ch)
{
- SLMP_INFO *info = (SLMP_INFO *)tty->driver_data;
+ SLMP_INFO *info = tty->driver_data;
unsigned long flags;
int ret = 0;
@@ -1075,7 +1024,7 @@
*/
static void send_xchar(struct tty_struct *tty, char ch)
{
- SLMP_INFO *info = (SLMP_INFO *)tty->driver_data;
+ SLMP_INFO *info = tty->driver_data;
unsigned long flags;
if (debug_level >= DEBUG_LEVEL_INFO)
@@ -1099,7 +1048,7 @@
*/
static void wait_until_sent(struct tty_struct *tty, int timeout)
{
- SLMP_INFO * info = (SLMP_INFO *)tty->driver_data;
+ SLMP_INFO * info = tty->driver_data;
unsigned long orig_jiffies, char_time;
if (!info )
@@ -1166,7 +1115,7 @@
*/
static int write_room(struct tty_struct *tty)
{
- SLMP_INFO *info = (SLMP_INFO *)tty->driver_data;
+ SLMP_INFO *info = tty->driver_data;
int ret;
if (sanity_check(info, tty->name, "write_room"))
@@ -1193,7 +1142,7 @@
*/
static void flush_chars(struct tty_struct *tty)
{
- SLMP_INFO *info = (SLMP_INFO *)tty->driver_data;
+ SLMP_INFO *info = tty->driver_data;
unsigned long flags;
if ( debug_level >= DEBUG_LEVEL_INFO )
@@ -1232,7 +1181,7 @@
*/
static void flush_buffer(struct tty_struct *tty)
{
- SLMP_INFO *info = (SLMP_INFO *)tty->driver_data;
+ SLMP_INFO *info = tty->driver_data;
unsigned long flags;
if (debug_level >= DEBUG_LEVEL_INFO)
@@ -1254,7 +1203,7 @@
*/
static void tx_hold(struct tty_struct *tty)
{
- SLMP_INFO *info = (SLMP_INFO *)tty->driver_data;
+ SLMP_INFO *info = tty->driver_data;
unsigned long flags;
if (sanity_check(info, tty->name, "tx_hold"))
@@ -1274,7 +1223,7 @@
*/
static void tx_release(struct tty_struct *tty)
{
- SLMP_INFO *info = (SLMP_INFO *)tty->driver_data;
+ SLMP_INFO *info = tty->driver_data;
unsigned long flags;
if (sanity_check(info, tty->name, "tx_release"))
@@ -1304,7 +1253,7 @@
static int do_ioctl(struct tty_struct *tty, struct file *file,
unsigned int cmd, unsigned long arg)
{
- SLMP_INFO *info = (SLMP_INFO *)tty->driver_data;
+ SLMP_INFO *info = tty->driver_data;
int error;
struct mgsl_icount cnow; /* kernel counter temps */
struct serial_icounter_struct __user *p_cuser; /* user space */
@@ -1515,7 +1464,7 @@
*/
static int chars_in_buffer(struct tty_struct *tty)
{
- SLMP_INFO *info = (SLMP_INFO *)tty->driver_data;
+ SLMP_INFO *info = tty->driver_data;
if (sanity_check(info, tty->name, "chars_in_buffer"))
return 0;
@@ -1531,7 +1480,7 @@
*/
static void throttle(struct tty_struct * tty)
{
- SLMP_INFO *info = (SLMP_INFO *)tty->driver_data;
+ SLMP_INFO *info = tty->driver_data;
unsigned long flags;
if (debug_level >= DEBUG_LEVEL_INFO)
@@ -1556,7 +1505,7 @@
*/
static void unthrottle(struct tty_struct * tty)
{
- SLMP_INFO *info = (SLMP_INFO *)tty->driver_data;
+ SLMP_INFO *info = tty->driver_data;
unsigned long flags;
if (debug_level >= DEBUG_LEVEL_INFO)
@@ -1587,7 +1536,7 @@
static int set_break(struct tty_struct *tty, int break_state)
{
unsigned char RegValue;
- SLMP_INFO * info = (SLMP_INFO *)tty->driver_data;
+ SLMP_INFO * info = tty->driver_data;
unsigned long flags;
if (debug_level >= DEBUG_LEVEL_INFO)
@@ -3269,7 +3218,7 @@
*/
static int tiocmget(struct tty_struct *tty, struct file *file)
{
- SLMP_INFO *info = (SLMP_INFO *)tty->driver_data;
+ SLMP_INFO *info = tty->driver_data;
unsigned int result;
unsigned long flags;
@@ -3295,7 +3244,7 @@
static int tiocmset(struct tty_struct *tty, struct file *file,
unsigned int set, unsigned int clear)
{
- SLMP_INFO *info = (SLMP_INFO *)tty->driver_data;
+ SLMP_INFO *info = tty->driver_data;
unsigned long flags;
if (debug_level >= DEBUG_LEVEL_INFO)
@@ -3318,7 +3267,28 @@
return 0;
}
+static int carrier_raised(struct tty_port *port)
+{
+ SLMP_INFO *info = container_of(port, SLMP_INFO, port);
+ unsigned long flags;
+ spin_lock_irqsave(&info->lock,flags);
+ get_signals(info);
+ spin_unlock_irqrestore(&info->lock,flags);
+
+ return (info->serial_signals & SerialSignal_DCD) ? 1 : 0;
+}
+
+static void raise_dtr_rts(struct tty_port *port)
+{
+ SLMP_INFO *info = container_of(port, SLMP_INFO, port);
+ unsigned long flags;
+
+ spin_lock_irqsave(&info->lock,flags);
+ info->serial_signals |= SerialSignal_RTS + SerialSignal_DTR;
+ set_signals(info);
+ spin_unlock_irqrestore(&info->lock,flags);
+}
/* Block the current process until the specified port is ready to open.
*/
@@ -3330,6 +3300,8 @@
bool do_clocal = false;
bool extra_count = false;
unsigned long flags;
+ int cd;
+ struct tty_port *port = &info->port;
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):%s block_til_ready()\n",
@@ -3338,7 +3310,7 @@
if (filp->f_flags & O_NONBLOCK || tty->flags & (1 << TTY_IO_ERROR)){
/* nonblock mode is set or port is not enabled */
/* just verify that callout device is not active */
- info->port.flags |= ASYNC_NORMAL_ACTIVE;
+ port->flags |= ASYNC_NORMAL_ACTIVE;
return 0;
}
@@ -3347,50 +3319,42 @@
/* Wait for carrier detect and the line to become
* free (i.e., not in use by the callout). While we are in
- * this loop, info->port.count is dropped by one, so that
+ * this loop, port->count is dropped by one, so that
* close() knows when to free things. We restore it upon
* exit, either normal or abnormal.
*/
retval = 0;
- add_wait_queue(&info->port.open_wait, &wait);
+ add_wait_queue(&port->open_wait, &wait);
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):%s block_til_ready() before block, count=%d\n",
- __FILE__,__LINE__, tty->driver->name, info->port.count );
+ __FILE__,__LINE__, tty->driver->name, port->count );
spin_lock_irqsave(&info->lock, flags);
if (!tty_hung_up_p(filp)) {
extra_count = true;
- info->port.count--;
+ port->count--;
}
spin_unlock_irqrestore(&info->lock, flags);
- info->port.blocked_open++;
+ port->blocked_open++;
while (1) {
- if ((tty->termios->c_cflag & CBAUD)) {
- spin_lock_irqsave(&info->lock,flags);
- info->serial_signals |= SerialSignal_RTS + SerialSignal_DTR;
- set_signals(info);
- spin_unlock_irqrestore(&info->lock,flags);
- }
+ if (tty->termios->c_cflag & CBAUD)
+ tty_port_raise_dtr_rts(port);
set_current_state(TASK_INTERRUPTIBLE);
- if (tty_hung_up_p(filp) || !(info->port.flags & ASYNC_INITIALIZED)){
- retval = (info->port.flags & ASYNC_HUP_NOTIFY) ?
+ if (tty_hung_up_p(filp) || !(port->flags & ASYNC_INITIALIZED)){
+ retval = (port->flags & ASYNC_HUP_NOTIFY) ?
-EAGAIN : -ERESTARTSYS;
break;
}
- spin_lock_irqsave(&info->lock,flags);
- get_signals(info);
- spin_unlock_irqrestore(&info->lock,flags);
+ cd = tty_port_carrier_raised(port);
- if (!(info->port.flags & ASYNC_CLOSING) &&
- (do_clocal || (info->serial_signals & SerialSignal_DCD)) ) {
+ if (!(port->flags & ASYNC_CLOSING) && (do_clocal || cd))
break;
- }
if (signal_pending(current)) {
retval = -ERESTARTSYS;
@@ -3399,24 +3363,24 @@
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):%s block_til_ready() count=%d\n",
- __FILE__,__LINE__, tty->driver->name, info->port.count );
+ __FILE__,__LINE__, tty->driver->name, port->count );
schedule();
}
set_current_state(TASK_RUNNING);
- remove_wait_queue(&info->port.open_wait, &wait);
+ remove_wait_queue(&port->open_wait, &wait);
if (extra_count)
- info->port.count++;
- info->port.blocked_open--;
+ port->count++;
+ port->blocked_open--;
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):%s block_til_ready() after, count=%d\n",
- __FILE__,__LINE__, tty->driver->name, info->port.count );
+ __FILE__,__LINE__, tty->driver->name, port->count );
if (!retval)
- info->port.flags |= ASYNC_NORMAL_ACTIVE;
+ port->flags |= ASYNC_NORMAL_ACTIVE;
return retval;
}
@@ -3782,6 +3746,11 @@
#endif
}
+static const struct tty_port_operations port_ops = {
+ .carrier_raised = carrier_raised,
+ .raise_dtr_rts = raise_dtr_rts,
+};
+
/* Allocate and initialize a device instance structure
*
* Return Value: pointer to SLMP_INFO if success, otherwise NULL
@@ -3798,6 +3767,7 @@
__FILE__,__LINE__, adapter_num, port_num);
} else {
tty_port_init(&info->port);
+ info->port.ops = &port_ops;
info->magic = MGSL_MAGIC;
INIT_WORK(&info->task, bh_handler);
info->max_frame_size = 4096;
@@ -3940,6 +3910,7 @@
.tiocmset = tiocmset,
};
+
static void synclinkmp_cleanup(void)
{
int rc;
diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c
index db15f9b..d33e5ab 100644
--- a/drivers/char/tty_io.c
+++ b/drivers/char/tty_io.c
@@ -1111,9 +1111,7 @@
* Locks the line discipline as required
* Writes to the tty driver are serialized by the atomic_write_lock
* and are then processed in chunks to the device. The line discipline
- * write method will not be involked in parallel for each device
- * The line discipline write method is called under the big
- * kernel lock for historical reasons. New code should not rely on this.
+ * write method will not be invoked in parallel for each device.
*/
static ssize_t tty_write(struct file *file, const char __user *buf,
@@ -1213,7 +1211,7 @@
* be held until the 'fast-open' is also done. Will change once we
* have refcounting in the driver and per driver locking
*/
-struct tty_struct *tty_driver_lookup_tty(struct tty_driver *driver,
+static struct tty_struct *tty_driver_lookup_tty(struct tty_driver *driver,
struct inode *inode, int idx)
{
struct tty_struct *tty;
@@ -2050,7 +2048,6 @@
/**
* tty_do_resize - resize event
* @tty: tty being resized
- * @real_tty: real tty (not the same as tty if using a pty/tty pair)
* @rows: rows (character)
* @cols: cols (character)
*
@@ -2058,41 +2055,34 @@
* peform a terminal resize correctly
*/
-int tty_do_resize(struct tty_struct *tty, struct tty_struct *real_tty,
- struct winsize *ws)
+int tty_do_resize(struct tty_struct *tty, struct winsize *ws)
{
- struct pid *pgrp, *rpgrp;
+ struct pid *pgrp;
unsigned long flags;
- /* For a PTY we need to lock the tty side */
- mutex_lock(&real_tty->termios_mutex);
- if (!memcmp(ws, &real_tty->winsize, sizeof(*ws)))
+ /* Lock the tty */
+ mutex_lock(&tty->termios_mutex);
+ if (!memcmp(ws, &tty->winsize, sizeof(*ws)))
goto done;
/* Get the PID values and reference them so we can
avoid holding the tty ctrl lock while sending signals */
spin_lock_irqsave(&tty->ctrl_lock, flags);
pgrp = get_pid(tty->pgrp);
- rpgrp = get_pid(real_tty->pgrp);
spin_unlock_irqrestore(&tty->ctrl_lock, flags);
if (pgrp)
kill_pgrp(pgrp, SIGWINCH, 1);
- if (rpgrp != pgrp && rpgrp)
- kill_pgrp(rpgrp, SIGWINCH, 1);
-
put_pid(pgrp);
- put_pid(rpgrp);
tty->winsize = *ws;
- real_tty->winsize = *ws;
done:
- mutex_unlock(&real_tty->termios_mutex);
+ mutex_unlock(&tty->termios_mutex);
return 0;
}
/**
* tiocswinsz - implement window size set ioctl
- * @tty; tty
+ * @tty; tty side of tty
* @arg: user buffer for result
*
* Copies the user idea of the window size to the kernel. Traditionally
@@ -2105,17 +2095,16 @@
* then calls into the default method.
*/
-static int tiocswinsz(struct tty_struct *tty, struct tty_struct *real_tty,
- struct winsize __user *arg)
+static int tiocswinsz(struct tty_struct *tty, struct winsize __user *arg)
{
struct winsize tmp_ws;
if (copy_from_user(&tmp_ws, arg, sizeof(*arg)))
return -EFAULT;
if (tty->ops->resize)
- return tty->ops->resize(tty, real_tty, &tmp_ws);
+ return tty->ops->resize(tty, &tmp_ws);
else
- return tty_do_resize(tty, real_tty, &tmp_ws);
+ return tty_do_resize(tty, &tmp_ws);
}
/**
@@ -2540,7 +2529,7 @@
case TIOCGWINSZ:
return tiocgwinsz(real_tty, p);
case TIOCSWINSZ:
- return tiocswinsz(tty, real_tty, p);
+ return tiocswinsz(real_tty, p);
case TIOCCONS:
return real_tty != tty ? -EINVAL : tioccons(file);
case FIONBIO:
@@ -2785,6 +2774,8 @@
INIT_WORK(&tty->hangup_work, do_tty_hangup);
mutex_init(&tty->atomic_read_lock);
mutex_init(&tty->atomic_write_lock);
+ mutex_init(&tty->output_lock);
+ mutex_init(&tty->echo_lock);
spin_lock_init(&tty->read_lock);
spin_lock_init(&tty->ctrl_lock);
INIT_LIST_HEAD(&tty->tty_files);
diff --git a/drivers/char/tty_ldisc.c b/drivers/char/tty_ldisc.c
index f307f13..7a84b40 100644
--- a/drivers/char/tty_ldisc.c
+++ b/drivers/char/tty_ldisc.c
@@ -316,8 +316,7 @@
{
/* wait_event is a macro */
wait_event(tty_ldisc_wait, tty_ldisc_try(tty));
- if (tty->ldisc.refcount == 0)
- printk(KERN_ERR "tty_ldisc_ref_wait\n");
+ WARN_ON(tty->ldisc.refcount == 0);
return &tty->ldisc;
}
@@ -376,15 +375,17 @@
* @tty: terminal to activate ldisc on
*
* Set the TTY_LDISC flag when the line discipline can be called
- * again. Do necessary wakeups for existing sleepers.
+ * again. Do necessary wakeups for existing sleepers. Clear the LDISC
+ * changing flag to indicate any ldisc change is now over.
*
- * Note: nobody should set this bit except via this function. Clearing
- * directly is allowed.
+ * Note: nobody should set the TTY_LDISC bit except via this function.
+ * Clearing directly is allowed.
*/
void tty_ldisc_enable(struct tty_struct *tty)
{
set_bit(TTY_LDISC, &tty->flags);
+ clear_bit(TTY_LDISC_CHANGING, &tty->flags);
wake_up(&tty_ldisc_wait);
}
@@ -496,7 +497,14 @@
* reference to the line discipline. The TTY_LDISC bit
* prevents anyone taking a reference once it is clear.
* We need the lock to avoid racing reference takers.
+ *
+ * We must clear the TTY_LDISC bit here to avoid a livelock
+ * with a userspace app continually trying to use the tty in
+ * parallel to the change and re-referencing the tty.
*/
+ clear_bit(TTY_LDISC, &tty->flags);
+ if (o_tty)
+ clear_bit(TTY_LDISC, &o_tty->flags);
spin_lock_irqsave(&tty_ldisc_lock, flags);
if (tty->ldisc.refcount || (o_tty && o_tty->ldisc.refcount)) {
@@ -528,7 +536,7 @@
* If the TTY_LDISC bit is set, then we are racing against
* another ldisc change
*/
- if (!test_bit(TTY_LDISC, &tty->flags)) {
+ if (test_bit(TTY_LDISC_CHANGING, &tty->flags)) {
struct tty_ldisc *ld;
spin_unlock_irqrestore(&tty_ldisc_lock, flags);
tty_ldisc_put(new_ldisc.ops);
@@ -536,10 +544,14 @@
tty_ldisc_deref(ld);
goto restart;
}
-
- clear_bit(TTY_LDISC, &tty->flags);
+ /*
+ * This flag is used to avoid two parallel ldisc changes. Once
+ * open and close are fine grained locked this may work better
+ * as a mutex shared with the open/close/hup paths
+ */
+ set_bit(TTY_LDISC_CHANGING, &tty->flags);
if (o_tty)
- clear_bit(TTY_LDISC, &o_tty->flags);
+ set_bit(TTY_LDISC_CHANGING, &o_tty->flags);
spin_unlock_irqrestore(&tty_ldisc_lock, flags);
/*
diff --git a/drivers/char/tty_port.c b/drivers/char/tty_port.c
index c8f8024..9b8004c 100644
--- a/drivers/char/tty_port.c
+++ b/drivers/char/tty_port.c
@@ -7,6 +7,7 @@
#include <linux/tty.h>
#include <linux/tty_driver.h>
#include <linux/tty_flip.h>
+#include <linux/serial.h>
#include <linux/timer.h>
#include <linux/string.h>
#include <linux/slab.h>
@@ -94,3 +95,227 @@
spin_unlock_irqrestore(&port->lock, flags);
}
EXPORT_SYMBOL(tty_port_tty_set);
+
+/**
+ * tty_port_hangup - hangup helper
+ * @port: tty port
+ *
+ * Perform port level tty hangup flag and count changes. Drop the tty
+ * reference.
+ */
+
+void tty_port_hangup(struct tty_port *port)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&port->lock, flags);
+ port->count = 0;
+ port->flags &= ~ASYNC_NORMAL_ACTIVE;
+ if (port->tty)
+ tty_kref_put(port->tty);
+ port->tty = NULL;
+ spin_unlock_irqrestore(&port->lock, flags);
+ wake_up_interruptible(&port->open_wait);
+}
+EXPORT_SYMBOL(tty_port_hangup);
+
+/**
+ * tty_port_carrier_raised - carrier raised check
+ * @port: tty port
+ *
+ * Wrapper for the carrier detect logic. For the moment this is used
+ * to hide some internal details. This will eventually become entirely
+ * internal to the tty port.
+ */
+
+int tty_port_carrier_raised(struct tty_port *port)
+{
+ if (port->ops->carrier_raised == NULL)
+ return 1;
+ return port->ops->carrier_raised(port);
+}
+EXPORT_SYMBOL(tty_port_carrier_raised);
+
+/**
+ * tty_port_raise_dtr_rts - Riase DTR/RTS
+ * @port: tty port
+ *
+ * Wrapper for the DTR/RTS raise logic. For the moment this is used
+ * to hide some internal details. This will eventually become entirely
+ * internal to the tty port.
+ */
+
+void tty_port_raise_dtr_rts(struct tty_port *port)
+{
+ if (port->ops->raise_dtr_rts)
+ port->ops->raise_dtr_rts(port);
+}
+EXPORT_SYMBOL(tty_port_raise_dtr_rts);
+
+/**
+ * tty_port_block_til_ready - Waiting logic for tty open
+ * @port: the tty port being opened
+ * @tty: the tty device being bound
+ * @filp: the file pointer of the opener
+ *
+ * Implement the core POSIX/SuS tty behaviour when opening a tty device.
+ * Handles:
+ * - hangup (both before and during)
+ * - non blocking open
+ * - rts/dtr/dcd
+ * - signals
+ * - port flags and counts
+ *
+ * The passed tty_port must implement the carrier_raised method if it can
+ * do carrier detect and the raise_dtr_rts method if it supports software
+ * management of these lines. Note that the dtr/rts raise is done each
+ * iteration as a hangup may have previously dropped them while we wait.
+ */
+
+int tty_port_block_til_ready(struct tty_port *port,
+ struct tty_struct *tty, struct file *filp)
+{
+ int do_clocal = 0, retval;
+ unsigned long flags;
+ DECLARE_WAITQUEUE(wait, current);
+ int cd;
+
+ /* block if port is in the process of being closed */
+ if (tty_hung_up_p(filp) || port->flags & ASYNC_CLOSING) {
+ interruptible_sleep_on(&port->close_wait);
+ if (port->flags & ASYNC_HUP_NOTIFY)
+ return -EAGAIN;
+ else
+ return -ERESTARTSYS;
+ }
+
+ /* if non-blocking mode is set we can pass directly to open unless
+ the port has just hung up or is in another error state */
+ if ((filp->f_flags & O_NONBLOCK) ||
+ (tty->flags & (1 << TTY_IO_ERROR))) {
+ port->flags |= ASYNC_NORMAL_ACTIVE;
+ return 0;
+ }
+
+ if (C_CLOCAL(tty))
+ do_clocal = 1;
+
+ /* Block waiting until we can proceed. We may need to wait for the
+ carrier, but we must also wait for any close that is in progress
+ before the next open may complete */
+
+ retval = 0;
+ add_wait_queue(&port->open_wait, &wait);
+
+ /* The port lock protects the port counts */
+ spin_lock_irqsave(&port->lock, flags);
+ if (!tty_hung_up_p(filp))
+ port->count--;
+ port->blocked_open++;
+ spin_unlock_irqrestore(&port->lock, flags);
+
+ while (1) {
+ /* Indicate we are open */
+ if (tty->termios->c_cflag & CBAUD)
+ tty_port_raise_dtr_rts(port);
+
+ set_current_state(TASK_INTERRUPTIBLE);
+ /* Check for a hangup or uninitialised port. Return accordingly */
+ if (tty_hung_up_p(filp) || !(port->flags & ASYNC_INITIALIZED)) {
+ if (port->flags & ASYNC_HUP_NOTIFY)
+ retval = -EAGAIN;
+ else
+ retval = -ERESTARTSYS;
+ break;
+ }
+ /* Probe the carrier. For devices with no carrier detect this
+ will always return true */
+ cd = tty_port_carrier_raised(port);
+ if (!(port->flags & ASYNC_CLOSING) &&
+ (do_clocal || cd))
+ break;
+ if (signal_pending(current)) {
+ retval = -ERESTARTSYS;
+ break;
+ }
+ schedule();
+ }
+ set_current_state(TASK_RUNNING);
+ remove_wait_queue(&port->open_wait, &wait);
+
+ /* Update counts. A parallel hangup will have set count to zero and
+ we must not mess that up further */
+ spin_lock_irqsave(&port->lock, flags);
+ if (!tty_hung_up_p(filp))
+ port->count++;
+ port->blocked_open--;
+ if (retval == 0)
+ port->flags |= ASYNC_NORMAL_ACTIVE;
+ spin_unlock_irqrestore(&port->lock, flags);
+ return 0;
+
+}
+EXPORT_SYMBOL(tty_port_block_til_ready);
+
+int tty_port_close_start(struct tty_port *port, struct tty_struct *tty, struct file *filp)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&port->lock, flags);
+ if (tty_hung_up_p(filp)) {
+ spin_unlock_irqrestore(&port->lock, flags);
+ return 0;
+ }
+
+ if( tty->count == 1 && port->count != 1) {
+ printk(KERN_WARNING
+ "tty_port_close_start: tty->count = 1 port count = %d.\n",
+ port->count);
+ port->count = 1;
+ }
+ if (--port->count < 0) {
+ printk(KERN_WARNING "tty_port_close_start: count = %d\n",
+ port->count);
+ port->count = 0;
+ }
+
+ if (port->count) {
+ spin_unlock_irqrestore(&port->lock, flags);
+ return 0;
+ }
+ port->flags |= ASYNC_CLOSING;
+ tty->closing = 1;
+ spin_unlock_irqrestore(&port->lock, flags);
+ /* Don't block on a stalled port, just pull the chain */
+ if (tty->flow_stopped)
+ tty_driver_flush_buffer(tty);
+ if (port->flags & ASYNC_INITIALIZED &&
+ port->closing_wait != ASYNC_CLOSING_WAIT_NONE)
+ tty_wait_until_sent(tty, port->closing_wait);
+ return 1;
+}
+EXPORT_SYMBOL(tty_port_close_start);
+
+void tty_port_close_end(struct tty_port *port, struct tty_struct *tty)
+{
+ unsigned long flags;
+
+ tty_ldisc_flush(tty);
+
+ spin_lock_irqsave(&port->lock, flags);
+ tty->closing = 0;
+
+ if (port->blocked_open) {
+ spin_unlock_irqrestore(&port->lock, flags);
+ if (port->close_delay) {
+ msleep_interruptible(
+ jiffies_to_msecs(port->close_delay));
+ }
+ spin_lock_irqsave(&port->lock, flags);
+ wake_up_interruptible(&port->open_wait);
+ }
+ port->flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING);
+ wake_up_interruptible(&port->close_wait);
+ spin_unlock_irqrestore(&port->lock, flags);
+}
+EXPORT_SYMBOL(tty_port_close_end);
diff --git a/drivers/char/vme_scc.c b/drivers/char/vme_scc.c
index 1718b3c..0e8234b 100644
--- a/drivers/char/vme_scc.c
+++ b/drivers/char/vme_scc.c
@@ -69,7 +69,7 @@
static void scc_enable_tx_interrupts(void * ptr);
static void scc_disable_rx_interrupts(void * ptr);
static void scc_enable_rx_interrupts(void * ptr);
-static int scc_get_CD(void * ptr);
+static int scc_carrier_raised(struct tty_port *port);
static void scc_shutdown_port(void * ptr);
static int scc_set_real_termios(void *ptr);
static void scc_hungup(void *ptr);
@@ -100,7 +100,6 @@
scc_enable_tx_interrupts,
scc_disable_rx_interrupts,
scc_enable_rx_interrupts,
- scc_get_CD,
scc_shutdown_port,
scc_set_real_termios,
scc_chars_in_buffer,
@@ -129,6 +128,10 @@
.break_ctl = scc_break_ctl,
};
+static const struct tty_port_operations scc_port_ops = {
+ .carrier_raised = scc_carrier_raised,
+};
+
/*----------------------------------------------------------------------------
* vme_scc_init() and support functions
*---------------------------------------------------------------------------*/
@@ -176,6 +179,8 @@
for (i = 0; i < 2; i++) {
port = scc_ports + i;
+ tty_port_init(&port->gs.port);
+ port->gs.port.ops = &scc_port_ops;
port->gs.magic = SCC_MAGIC;
port->gs.close_delay = HZ/2;
port->gs.closing_wait = 30 * HZ;
@@ -624,10 +629,10 @@
}
-static int scc_get_CD(void *ptr)
+static int scc_carrier_raised(struct tty_port *port)
{
- struct scc_port *port = ptr;
- unsigned channel = port->channel;
+ struct scc_port *sc = container_of(port, struct scc_port, gs.port);
+ unsigned channel = sc->channel;
return !!(scc_last_status_reg[channel] & SR_DCD);
}
@@ -638,7 +643,7 @@
struct scc_port *port = ptr;
port->gs.port.flags &= ~ GS_ACTIVE;
- if (port->gs.port.tty && port->gs.port.tty->termios->c_cflag & HUPCL) {
+ if (port->gs.port.tty && (port->gs.port.tty->termios->c_cflag & HUPCL)) {
scc_setsignals (port, 0, 0);
}
}
@@ -779,7 +784,7 @@
static void scc_send_xchar(struct tty_struct *tty, char ch)
{
- struct scc_port *port = (struct scc_port *)tty->driver_data;
+ struct scc_port *port = tty->driver_data;
port->x_char = ch;
if (ch)
@@ -896,7 +901,7 @@
return retval;
}
- port->c_dcd = scc_get_CD (port);
+ port->c_dcd = tty_port_carrier_raised(&port->gs.port);
scc_enable_rx_interrupts(port);
@@ -906,7 +911,7 @@
static void scc_throttle (struct tty_struct * tty)
{
- struct scc_port *port = (struct scc_port *)tty->driver_data;
+ struct scc_port *port = tty->driver_data;
unsigned long flags;
SCC_ACCESS_INIT(port);
@@ -922,7 +927,7 @@
static void scc_unthrottle (struct tty_struct * tty)
{
- struct scc_port *port = (struct scc_port *)tty->driver_data;
+ struct scc_port *port = tty->driver_data;
unsigned long flags;
SCC_ACCESS_INIT(port);
@@ -945,7 +950,7 @@
static int scc_break_ctl(struct tty_struct *tty, int break_state)
{
- struct scc_port *port = (struct scc_port *)tty->driver_data;
+ struct scc_port *port = tty->driver_data;
unsigned long flags;
SCC_ACCESS_INIT(port);
diff --git a/drivers/char/vt.c b/drivers/char/vt.c
index 008176e..8001421 100644
--- a/drivers/char/vt.c
+++ b/drivers/char/vt.c
@@ -819,8 +819,8 @@
* ctrl_lock of the tty IFF a tty is passed.
*/
-static int vc_do_resize(struct tty_struct *tty, struct tty_struct *real_tty,
- struct vc_data *vc, unsigned int cols, unsigned int lines)
+static int vc_do_resize(struct tty_struct *tty, struct vc_data *vc,
+ unsigned int cols, unsigned int lines)
{
unsigned long old_origin, new_origin, new_scr_end, rlth, rrem, err = 0;
unsigned int old_cols, old_rows, old_row_size, old_screen_size;
@@ -932,7 +932,7 @@
ws.ws_row = vc->vc_rows;
ws.ws_col = vc->vc_cols;
ws.ws_ypixel = vc->vc_scan_lines;
- tty_do_resize(tty, real_tty, &ws);
+ tty_do_resize(tty, &ws);
}
if (CON_IS_VISIBLE(vc))
@@ -954,13 +954,12 @@
int vc_resize(struct vc_data *vc, unsigned int cols, unsigned int rows)
{
- return vc_do_resize(vc->vc_tty, vc->vc_tty, vc, cols, rows);
+ return vc_do_resize(vc->vc_tty, vc, cols, rows);
}
/**
* vt_resize - resize a VT
* @tty: tty to resize
- * @real_tty: tty if a pty/tty pair
* @ws: winsize attributes
*
* Resize a virtual terminal. This is called by the tty layer as we
@@ -971,14 +970,13 @@
* termios_mutex and the tty ctrl_lock in that order.
*/
-int vt_resize(struct tty_struct *tty, struct tty_struct *real_tty,
- struct winsize *ws)
+int vt_resize(struct tty_struct *tty, struct winsize *ws)
{
struct vc_data *vc = tty->driver_data;
int ret;
acquire_console_sem();
- ret = vc_do_resize(tty, real_tty, vc, ws->ws_col, ws->ws_row);
+ ret = vc_do_resize(tty, vc, ws->ws_col, ws->ws_row);
release_console_sem();
return ret;
}
@@ -2679,7 +2677,7 @@
{
if (tty->stopped)
return 0;
- return 4096; /* No limit, really; we're not buffering */
+ return 32768; /* No limit, really; we're not buffering */
}
static int con_chars_in_buffer(struct tty_struct *tty)
diff --git a/drivers/char/vt_ioctl.c b/drivers/char/vt_ioctl.c
index 8944ce5..a2dee0e 100644
--- a/drivers/char/vt_ioctl.c
+++ b/drivers/char/vt_ioctl.c
@@ -366,7 +366,7 @@
int vt_ioctl(struct tty_struct *tty, struct file * file,
unsigned int cmd, unsigned long arg)
{
- struct vc_data *vc = (struct vc_data *)tty->driver_data;
+ struct vc_data *vc = tty->driver_data;
struct console_font_op op; /* used in multiple places here */
struct kbd_struct * kbd;
unsigned int console;
diff --git a/drivers/net/usb/hso.c b/drivers/net/usb/hso.c
index 9f7896a..c4918b8 100644
--- a/drivers/net/usb/hso.c
+++ b/drivers/net/usb/hso.c
@@ -3,6 +3,8 @@
* Driver for Option High Speed Mobile Devices.
*
* Copyright (C) 2008 Option International
+ * Filip Aben <f.aben@option.com>
+ * Denis Joseph Barrow <d.barow@option.com>
* Copyright (C) 2007 Andrew Bird (Sphere Systems Ltd)
* <ajb@spheresystems.co.uk>
* Copyright (C) 2008 Greg Kroah-Hartman <gregkh@suse.de>
@@ -39,8 +41,11 @@
* port is opened, as this have a huge impact on the network port
* throughput.
*
- * Interface 2: Standard modem interface - circuit switched interface, should
- * not be used.
+ * Interface 2: Standard modem interface - circuit switched interface, this
+ * can be used to make a standard ppp connection however it
+ * should not be used in conjunction with the IP network interface
+ * enabled for USB performance reasons i.e. if using this set
+ * ideally disable_net=1.
*
*****************************************************************************/
@@ -63,6 +68,8 @@
#include <linux/usb/cdc.h>
#include <net/arp.h>
#include <asm/byteorder.h>
+#include <linux/serial_core.h>
+#include <linux/serial.h>
#define DRIVER_VERSION "1.2"
@@ -182,6 +189,41 @@
RX_PENDING
};
+#define BM_REQUEST_TYPE (0xa1)
+#define B_NOTIFICATION (0x20)
+#define W_VALUE (0x0)
+#define W_INDEX (0x2)
+#define W_LENGTH (0x2)
+
+#define B_OVERRUN (0x1<<6)
+#define B_PARITY (0x1<<5)
+#define B_FRAMING (0x1<<4)
+#define B_RING_SIGNAL (0x1<<3)
+#define B_BREAK (0x1<<2)
+#define B_TX_CARRIER (0x1<<1)
+#define B_RX_CARRIER (0x1<<0)
+
+struct hso_serial_state_notification {
+ u8 bmRequestType;
+ u8 bNotification;
+ u16 wValue;
+ u16 wIndex;
+ u16 wLength;
+ u16 UART_state_bitmap;
+} __attribute__((packed));
+
+struct hso_tiocmget {
+ struct mutex mutex;
+ wait_queue_head_t waitq;
+ int intr_completed;
+ struct usb_endpoint_descriptor *endp;
+ struct urb *urb;
+ struct hso_serial_state_notification serial_state_notification;
+ u16 prev_UART_state_bitmap;
+ struct uart_icount icount;
+};
+
+
struct hso_serial {
struct hso_device *parent;
int magic;
@@ -219,6 +261,7 @@
spinlock_t serial_lock;
int (*write_data) (struct hso_serial *serial);
+ struct hso_tiocmget *tiocmget;
/* Hacks required to get flow control
* working on the serial receive buffers
* so as not to drop characters on the floor.
@@ -305,7 +348,7 @@
static void async_put_intf(struct work_struct *data);
static int hso_put_activity(struct hso_device *hso_dev);
static int hso_get_activity(struct hso_device *hso_dev);
-
+static void tiocmget_intr_callback(struct urb *urb);
/*****************************************************************************/
/* Helping functions */
/*****************************************************************************/
@@ -362,8 +405,6 @@
static struct hso_device *serial_table[HSO_SERIAL_TTY_MINORS];
static struct hso_device *network_table[HSO_MAX_NET_DEVICES];
static spinlock_t serial_table_lock;
-static struct ktermios *hso_serial_termios[HSO_SERIAL_TTY_MINORS];
-static struct ktermios *hso_serial_termios_locked[HSO_SERIAL_TTY_MINORS];
static const s32 default_port_spec[] = {
HSO_INTF_MUX | HSO_PORT_NETWORK,
@@ -1009,23 +1050,11 @@
/* Serial driver functions */
-static void _hso_serial_set_termios(struct tty_struct *tty,
- struct ktermios *old)
+static void hso_init_termios(struct ktermios *termios)
{
- struct hso_serial *serial = get_serial_by_tty(tty);
- struct ktermios *termios;
-
- if ((!tty) || (!tty->termios) || (!serial)) {
- printk(KERN_ERR "%s: no tty structures", __func__);
- return;
- }
-
- D4("port %d", serial->minor);
-
/*
* The default requirements for this device are:
*/
- termios = tty->termios;
termios->c_iflag &=
~(IGNBRK /* disable ignore break */
| BRKINT /* disable break causes interrupt */
@@ -1057,15 +1086,38 @@
termios->c_cflag |= CS8; /* character size 8 bits */
/* baud rate 115200 */
- tty_encode_baud_rate(serial->tty, 115200, 115200);
+ tty_termios_encode_baud_rate(termios, 115200, 115200);
+}
+
+static void _hso_serial_set_termios(struct tty_struct *tty,
+ struct ktermios *old)
+{
+ struct hso_serial *serial = get_serial_by_tty(tty);
+ struct ktermios *termios;
+
+ if (!serial) {
+ printk(KERN_ERR "%s: no tty structures", __func__);
+ return;
+ }
+
+ D4("port %d", serial->minor);
/*
- * Force low_latency on; otherwise the pushes are scheduled;
- * this is bad as it opens up the possibility of dropping bytes
- * on the floor. We don't want to drop bytes on the floor. :)
+ * Fix up unsupported bits
*/
- serial->tty->low_latency = 1;
- return;
+ termios = tty->termios;
+ termios->c_iflag &= ~IXON; /* disable enable XON/XOFF flow control */
+
+ termios->c_cflag &=
+ ~(CSIZE /* no size */
+ | PARENB /* disable parity bit */
+ | CBAUD /* clear current baud rate */
+ | CBAUDEX); /* clear current buad rate */
+
+ termios->c_cflag |= CS8; /* character size 8 bits */
+
+ /* baud rate 115200 */
+ tty_encode_baud_rate(tty, 115200, 115200);
}
static void hso_resubmit_rx_bulk_urb(struct hso_serial *serial, struct urb *urb)
@@ -1228,6 +1280,7 @@
/* sanity check */
if (serial == NULL || serial->magic != HSO_SERIAL_MAGIC) {
+ WARN_ON(1);
tty->driver_data = NULL;
D1("Failed to open port");
return -ENODEV;
@@ -1242,8 +1295,10 @@
kref_get(&serial->parent->ref);
/* setup */
+ spin_lock_irq(&serial->serial_lock);
tty->driver_data = serial;
- serial->tty = tty;
+ serial->tty = tty_kref_get(tty);
+ spin_unlock_irq(&serial->serial_lock);
/* check for port already opened, if not set the termios */
serial->open_count++;
@@ -1285,6 +1340,10 @@
D1("Closing serial port");
+ /* Open failed, no close cleanup required */
+ if (serial == NULL)
+ return;
+
mutex_lock(&serial->parent->mutex);
usb_gone = serial->parent->usb_gone;
@@ -1297,10 +1356,13 @@
kref_put(&serial->parent->ref, hso_serial_ref_free);
if (serial->open_count <= 0) {
serial->open_count = 0;
- if (serial->tty) {
+ spin_lock_irq(&serial->serial_lock);
+ if (serial->tty == tty) {
serial->tty->driver_data = NULL;
serial->tty = NULL;
+ tty_kref_put(tty);
}
+ spin_unlock_irq(&serial->serial_lock);
if (!usb_gone)
hso_stop_serial_device(serial->parent);
tasklet_kill(&serial->unthrottle_tasklet);
@@ -1400,25 +1462,217 @@
return chars;
}
+int tiocmget_submit_urb(struct hso_serial *serial,
+ struct hso_tiocmget *tiocmget,
+ struct usb_device *usb)
+{
+ int result;
+
+ if (serial->parent->usb_gone)
+ return -ENODEV;
+ usb_fill_int_urb(tiocmget->urb, usb,
+ usb_rcvintpipe(usb,
+ tiocmget->endp->
+ bEndpointAddress & 0x7F),
+ &tiocmget->serial_state_notification,
+ sizeof(struct hso_serial_state_notification),
+ tiocmget_intr_callback, serial,
+ tiocmget->endp->bInterval);
+ result = usb_submit_urb(tiocmget->urb, GFP_ATOMIC);
+ if (result) {
+ dev_warn(&usb->dev, "%s usb_submit_urb failed %d\n", __func__,
+ result);
+ }
+ return result;
+
+}
+
+static void tiocmget_intr_callback(struct urb *urb)
+{
+ struct hso_serial *serial = urb->context;
+ struct hso_tiocmget *tiocmget;
+ int status = urb->status;
+ u16 UART_state_bitmap, prev_UART_state_bitmap;
+ struct uart_icount *icount;
+ struct hso_serial_state_notification *serial_state_notification;
+ struct usb_device *usb;
+
+ /* Sanity checks */
+ if (!serial)
+ return;
+ if (status) {
+ log_usb_status(status, __func__);
+ return;
+ }
+ tiocmget = serial->tiocmget;
+ if (!tiocmget)
+ return;
+ usb = serial->parent->usb;
+ serial_state_notification = &tiocmget->serial_state_notification;
+ if (serial_state_notification->bmRequestType != BM_REQUEST_TYPE ||
+ serial_state_notification->bNotification != B_NOTIFICATION ||
+ le16_to_cpu(serial_state_notification->wValue) != W_VALUE ||
+ le16_to_cpu(serial_state_notification->wIndex) != W_INDEX ||
+ le16_to_cpu(serial_state_notification->wLength) != W_LENGTH) {
+ dev_warn(&usb->dev,
+ "hso received invalid serial state notification\n");
+ DUMP(serial_state_notification,
+ sizeof(hso_serial_state_notifation))
+ } else {
+
+ UART_state_bitmap = le16_to_cpu(serial_state_notification->
+ UART_state_bitmap);
+ prev_UART_state_bitmap = tiocmget->prev_UART_state_bitmap;
+ icount = &tiocmget->icount;
+ spin_lock(&serial->serial_lock);
+ if ((UART_state_bitmap & B_OVERRUN) !=
+ (prev_UART_state_bitmap & B_OVERRUN))
+ icount->parity++;
+ if ((UART_state_bitmap & B_PARITY) !=
+ (prev_UART_state_bitmap & B_PARITY))
+ icount->parity++;
+ if ((UART_state_bitmap & B_FRAMING) !=
+ (prev_UART_state_bitmap & B_FRAMING))
+ icount->frame++;
+ if ((UART_state_bitmap & B_RING_SIGNAL) &&
+ !(prev_UART_state_bitmap & B_RING_SIGNAL))
+ icount->rng++;
+ if ((UART_state_bitmap & B_BREAK) !=
+ (prev_UART_state_bitmap & B_BREAK))
+ icount->brk++;
+ if ((UART_state_bitmap & B_TX_CARRIER) !=
+ (prev_UART_state_bitmap & B_TX_CARRIER))
+ icount->dsr++;
+ if ((UART_state_bitmap & B_RX_CARRIER) !=
+ (prev_UART_state_bitmap & B_RX_CARRIER))
+ icount->dcd++;
+ tiocmget->prev_UART_state_bitmap = UART_state_bitmap;
+ spin_unlock(&serial->serial_lock);
+ tiocmget->intr_completed = 1;
+ wake_up_interruptible(&tiocmget->waitq);
+ }
+ memset(serial_state_notification, 0,
+ sizeof(struct hso_serial_state_notification));
+ tiocmget_submit_urb(serial,
+ tiocmget,
+ serial->parent->usb);
+}
+
+/*
+ * next few functions largely stolen from drivers/serial/serial_core.c
+ */
+/* Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change
+ * - mask passed in arg for lines of interest
+ * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking)
+ * Caller should use TIOCGICOUNT to see which one it was
+ */
+static int
+hso_wait_modem_status(struct hso_serial *serial, unsigned long arg)
+{
+ DECLARE_WAITQUEUE(wait, current);
+ struct uart_icount cprev, cnow;
+ struct hso_tiocmget *tiocmget;
+ int ret;
+
+ tiocmget = serial->tiocmget;
+ if (!tiocmget)
+ return -ENOENT;
+ /*
+ * note the counters on entry
+ */
+ spin_lock_irq(&serial->serial_lock);
+ memcpy(&cprev, &tiocmget->icount, sizeof(struct uart_icount));
+ spin_unlock_irq(&serial->serial_lock);
+ add_wait_queue(&tiocmget->waitq, &wait);
+ for (;;) {
+ spin_lock_irq(&serial->serial_lock);
+ memcpy(&cnow, &tiocmget->icount, sizeof(struct uart_icount));
+ spin_unlock_irq(&serial->serial_lock);
+ set_current_state(TASK_INTERRUPTIBLE);
+ if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
+ ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
+ ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd))) {
+ ret = 0;
+ break;
+ }
+ schedule();
+ /* see if a signal did it */
+ if (signal_pending(current)) {
+ ret = -ERESTARTSYS;
+ break;
+ }
+ cprev = cnow;
+ }
+ current->state = TASK_RUNNING;
+ remove_wait_queue(&tiocmget->waitq, &wait);
+
+ return ret;
+}
+
+/*
+ * Get counter of input serial line interrupts (DCD,RI,DSR,CTS)
+ * Return: write counters to the user passed counter struct
+ * NB: both 1->0 and 0->1 transitions are counted except for
+ * RI where only 0->1 is counted.
+ */
+static int hso_get_count(struct hso_serial *serial,
+ struct serial_icounter_struct __user *icnt)
+{
+ struct serial_icounter_struct icount;
+ struct uart_icount cnow;
+ struct hso_tiocmget *tiocmget = serial->tiocmget;
+
+ if (!tiocmget)
+ return -ENOENT;
+ spin_lock_irq(&serial->serial_lock);
+ memcpy(&cnow, &tiocmget->icount, sizeof(struct uart_icount));
+ spin_unlock_irq(&serial->serial_lock);
+
+ icount.cts = cnow.cts;
+ icount.dsr = cnow.dsr;
+ icount.rng = cnow.rng;
+ icount.dcd = cnow.dcd;
+ icount.rx = cnow.rx;
+ icount.tx = cnow.tx;
+ icount.frame = cnow.frame;
+ icount.overrun = cnow.overrun;
+ icount.parity = cnow.parity;
+ icount.brk = cnow.brk;
+ icount.buf_overrun = cnow.buf_overrun;
+
+ return copy_to_user(icnt, &icount, sizeof(icount)) ? -EFAULT : 0;
+}
+
static int hso_serial_tiocmget(struct tty_struct *tty, struct file *file)
{
- unsigned int value;
+ int retval;
struct hso_serial *serial = get_serial_by_tty(tty);
- unsigned long flags;
+ struct hso_tiocmget *tiocmget;
+ u16 UART_state_bitmap;
/* sanity check */
if (!serial) {
D1("no tty structures");
return -EINVAL;
}
-
- spin_lock_irqsave(&serial->serial_lock, flags);
- value = ((serial->rts_state) ? TIOCM_RTS : 0) |
+ spin_lock_irq(&serial->serial_lock);
+ retval = ((serial->rts_state) ? TIOCM_RTS : 0) |
((serial->dtr_state) ? TIOCM_DTR : 0);
- spin_unlock_irqrestore(&serial->serial_lock, flags);
+ tiocmget = serial->tiocmget;
+ if (tiocmget) {
- return value;
+ UART_state_bitmap = le16_to_cpu(
+ tiocmget->prev_UART_state_bitmap);
+ if (UART_state_bitmap & B_RING_SIGNAL)
+ retval |= TIOCM_RNG;
+ if (UART_state_bitmap & B_RX_CARRIER)
+ retval |= TIOCM_CD;
+ if (UART_state_bitmap & B_TX_CARRIER)
+ retval |= TIOCM_DSR;
+ }
+ spin_unlock_irq(&serial->serial_lock);
+ return retval;
}
static int hso_serial_tiocmset(struct tty_struct *tty, struct file *file,
@@ -1460,6 +1714,32 @@
USB_CTRL_SET_TIMEOUT);
}
+static int hso_serial_ioctl(struct tty_struct *tty, struct file *file,
+ unsigned int cmd, unsigned long arg)
+{
+ struct hso_serial *serial = get_serial_by_tty(tty);
+ void __user *uarg = (void __user *)arg;
+ int ret = 0;
+ D4("IOCTL cmd: %d, arg: %ld", cmd, arg);
+
+ if (!serial)
+ return -ENODEV;
+ switch (cmd) {
+ case TIOCMIWAIT:
+ ret = hso_wait_modem_status(serial, arg);
+ break;
+
+ case TIOCGICOUNT:
+ ret = hso_get_count(serial, uarg);
+ break;
+ default:
+ ret = -ENOIOCTLCMD;
+ break;
+ }
+ return ret;
+}
+
+
/* starts a transmit */
static void hso_kick_transmit(struct hso_serial *serial)
{
@@ -1653,6 +1933,7 @@
{
struct hso_serial *serial = urb->context;
int status = urb->status;
+ struct tty_struct *tty;
/* sanity check */
if (!serial) {
@@ -1662,14 +1943,18 @@
spin_lock(&serial->serial_lock);
serial->tx_urb_used = 0;
+ tty = tty_kref_get(serial->tty);
spin_unlock(&serial->serial_lock);
if (status) {
log_usb_status(status, __func__);
+ tty_kref_put(tty);
return;
}
hso_put_activity(serial->parent);
- if (serial->tty)
- tty_wakeup(serial->tty);
+ if (tty) {
+ tty_wakeup(tty);
+ tty_kref_put(tty);
+ }
hso_kick_transmit(serial);
D1(" ");
@@ -1706,6 +1991,7 @@
struct hso_serial *serial = urb->context;
struct usb_ctrlrequest *req;
int status = urb->status;
+ struct tty_struct *tty;
/* sanity check */
if (!serial)
@@ -1713,9 +1999,11 @@
spin_lock(&serial->serial_lock);
serial->tx_urb_used = 0;
+ tty = tty_kref_get(serial->tty);
spin_unlock(&serial->serial_lock);
if (status) {
log_usb_status(status, __func__);
+ tty_kref_put(tty);
return;
}
@@ -1734,25 +2022,31 @@
spin_unlock(&serial->serial_lock);
} else {
hso_put_activity(serial->parent);
- if (serial->tty)
- tty_wakeup(serial->tty);
+ if (tty)
+ tty_wakeup(tty);
/* response to a write command */
hso_kick_transmit(serial);
}
+ tty_kref_put(tty);
}
/* handle RX data for serial port */
static int put_rxbuf_data(struct urb *urb, struct hso_serial *serial)
{
- struct tty_struct *tty = serial->tty;
+ struct tty_struct *tty;
int write_length_remaining = 0;
int curr_write_len;
+
/* Sanity check */
if (urb == NULL || serial == NULL) {
D1("serial = NULL");
return -2;
}
+ spin_lock(&serial->serial_lock);
+ tty = tty_kref_get(serial->tty);
+ spin_unlock(&serial->serial_lock);
+
/* Push data to tty */
if (tty) {
write_length_remaining = urb->actual_length -
@@ -1774,6 +2068,7 @@
serial->curr_rx_urb_offset = 0;
serial->rx_urb_filled[hso_urb_to_index(serial, urb)] = 0;
}
+ tty_kref_put(tty);
return write_length_remaining;
}
@@ -1922,7 +2217,10 @@
serial->shared_int->use_count++;
mutex_unlock(&serial->shared_int->shared_int_lock);
}
-
+ if (serial->tiocmget)
+ tiocmget_submit_urb(serial,
+ serial->tiocmget,
+ serial->parent->usb);
return result;
}
@@ -1930,6 +2228,7 @@
{
int i;
struct hso_serial *serial = dev2ser(hso_dev);
+ struct hso_tiocmget *tiocmget;
if (!serial)
return -ENODEV;
@@ -1958,6 +2257,11 @@
}
mutex_unlock(&serial->shared_int->shared_int_lock);
}
+ tiocmget = serial->tiocmget;
+ if (tiocmget) {
+ wake_up_interruptible(&tiocmget->waitq);
+ usb_kill_urb(tiocmget->urb);
+ }
return 0;
}
@@ -2304,6 +2608,20 @@
return NULL;
}
+static void hso_free_tiomget(struct hso_serial *serial)
+{
+ struct hso_tiocmget *tiocmget = serial->tiocmget;
+ if (tiocmget) {
+ kfree(tiocmget);
+ if (tiocmget->urb) {
+ usb_free_urb(tiocmget->urb);
+ tiocmget->urb = NULL;
+ }
+ serial->tiocmget = NULL;
+
+ }
+}
+
/* Frees an AT channel ( goes for both mux and non-mux ) */
static void hso_free_serial_device(struct hso_device *hso_dev)
{
@@ -2322,6 +2640,7 @@
else
mutex_unlock(&serial->shared_int->shared_int_lock);
}
+ hso_free_tiomget(serial);
kfree(serial);
hso_free_device(hso_dev);
}
@@ -2333,6 +2652,7 @@
struct hso_device *hso_dev;
struct hso_serial *serial;
int num_urbs;
+ struct hso_tiocmget *tiocmget;
hso_dev = hso_create_device(interface, port);
if (!hso_dev)
@@ -2345,8 +2665,27 @@
serial->parent = hso_dev;
hso_dev->port_data.dev_serial = serial;
- if (port & HSO_PORT_MODEM)
+ if ((port & HSO_PORT_MASK) == HSO_PORT_MODEM) {
num_urbs = 2;
+ serial->tiocmget = kzalloc(sizeof(struct hso_tiocmget),
+ GFP_KERNEL);
+ /* it isn't going to break our heart if serial->tiocmget
+ * allocation fails don't bother checking this.
+ */
+ if (serial->tiocmget) {
+ tiocmget = serial->tiocmget;
+ tiocmget->urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (tiocmget->urb) {
+ mutex_init(&tiocmget->mutex);
+ init_waitqueue_head(&tiocmget->waitq);
+ tiocmget->endp = hso_get_ep(
+ interface,
+ USB_ENDPOINT_XFER_INT,
+ USB_DIR_IN);
+ } else
+ hso_free_tiomget(serial);
+ }
+ }
else
num_urbs = 1;
@@ -2382,6 +2721,7 @@
exit2:
hso_serial_common_free(serial);
exit:
+ hso_free_tiomget(serial);
kfree(serial);
hso_free_device(hso_dev);
return NULL;
@@ -2786,15 +3126,20 @@
static void hso_free_interface(struct usb_interface *interface)
{
struct hso_serial *hso_dev;
+ struct tty_struct *tty;
int i;
for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) {
if (serial_table[i]
&& (serial_table[i]->interface == interface)) {
hso_dev = dev2ser(serial_table[i]);
- if (hso_dev->tty)
- tty_hangup(hso_dev->tty);
+ spin_lock_irq(&hso_dev->serial_lock);
+ tty = tty_kref_get(hso_dev->tty);
+ spin_unlock_irq(&hso_dev->serial_lock);
+ if (tty)
+ tty_hangup(tty);
mutex_lock(&hso_dev->parent->mutex);
+ tty_kref_put(tty);
hso_dev->parent->usb_gone = 1;
mutex_unlock(&hso_dev->parent->mutex);
kref_put(&serial_table[i]->ref, hso_serial_ref_free);
@@ -2887,6 +3232,7 @@
.close = hso_serial_close,
.write = hso_serial_write,
.write_room = hso_serial_write_room,
+ .ioctl = hso_serial_ioctl,
.set_termios = hso_serial_set_termios,
.chars_in_buffer = hso_serial_chars_in_buffer,
.tiocmget = hso_serial_tiocmget,
@@ -2939,9 +3285,7 @@
tty_drv->subtype = SERIAL_TYPE_NORMAL;
tty_drv->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
tty_drv->init_termios = tty_std_termios;
- tty_drv->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL;
- tty_drv->termios = hso_serial_termios;
- tty_drv->termios_locked = hso_serial_termios_locked;
+ hso_init_termios(&tty_drv->init_termios);
tty_set_operations(tty_drv, &hso_serial_ops);
/* register the tty driver */
diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c
index 303272a..daa0056 100644
--- a/drivers/serial/8250.c
+++ b/drivers/serial/8250.c
@@ -279,6 +279,13 @@
.fcr = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_10,
.flags = UART_CAP_FIFO,
},
+ [PORT_OCTEON] = {
+ .name = "OCTEON",
+ .fifo_size = 64,
+ .tx_loadsz = 64,
+ .fcr = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_10,
+ .flags = UART_CAP_FIFO,
+ },
};
#if defined (CONFIG_SERIAL_8250_AU1X00)
@@ -303,16 +310,16 @@
};
/* sane hardware needs no mapping */
-static inline int map_8250_in_reg(struct uart_8250_port *up, int offset)
+static inline int map_8250_in_reg(struct uart_port *p, int offset)
{
- if (up->port.iotype != UPIO_AU)
+ if (p->iotype != UPIO_AU)
return offset;
return au_io_in_map[offset];
}
-static inline int map_8250_out_reg(struct uart_8250_port *up, int offset)
+static inline int map_8250_out_reg(struct uart_port *p, int offset)
{
- if (up->port.iotype != UPIO_AU)
+ if (p->iotype != UPIO_AU)
return offset;
return au_io_out_map[offset];
}
@@ -341,16 +348,16 @@
[UART_SCR] = 0x2c
};
-static inline int map_8250_in_reg(struct uart_8250_port *up, int offset)
+static inline int map_8250_in_reg(struct uart_port *p, int offset)
{
- if (up->port.iotype != UPIO_RM9000)
+ if (p->iotype != UPIO_RM9000)
return offset;
return regmap_in[offset];
}
-static inline int map_8250_out_reg(struct uart_8250_port *up, int offset)
+static inline int map_8250_out_reg(struct uart_port *p, int offset)
{
- if (up->port.iotype != UPIO_RM9000)
+ if (p->iotype != UPIO_RM9000)
return offset;
return regmap_out[offset];
}
@@ -363,108 +370,170 @@
#endif
-static unsigned int serial_in(struct uart_8250_port *up, int offset)
+static unsigned int hub6_serial_in(struct uart_port *p, int offset)
{
- unsigned int tmp;
- offset = map_8250_in_reg(up, offset) << up->port.regshift;
-
- switch (up->port.iotype) {
- case UPIO_HUB6:
- outb(up->port.hub6 - 1 + offset, up->port.iobase);
- return inb(up->port.iobase + 1);
-
- case UPIO_MEM:
- case UPIO_DWAPB:
- return readb(up->port.membase + offset);
-
- case UPIO_RM9000:
- case UPIO_MEM32:
- return readl(up->port.membase + offset);
-
-#ifdef CONFIG_SERIAL_8250_AU1X00
- case UPIO_AU:
- return __raw_readl(up->port.membase + offset);
-#endif
-
- case UPIO_TSI:
- if (offset == UART_IIR) {
- tmp = readl(up->port.membase + (UART_IIR & ~3));
- return (tmp >> 16) & 0xff; /* UART_IIR % 4 == 2 */
- } else
- return readb(up->port.membase + offset);
-
- default:
- return inb(up->port.iobase + offset);
- }
+ offset = map_8250_in_reg(p, offset) << p->regshift;
+ outb(p->hub6 - 1 + offset, p->iobase);
+ return inb(p->iobase + 1);
}
-static void
-serial_out(struct uart_8250_port *up, int offset, int value)
+static void hub6_serial_out(struct uart_port *p, int offset, int value)
{
- /* Save the offset before it's remapped */
- int save_offset = offset;
- offset = map_8250_out_reg(up, offset) << up->port.regshift;
+ offset = map_8250_out_reg(p, offset) << p->regshift;
+ outb(p->hub6 - 1 + offset, p->iobase);
+ outb(value, p->iobase + 1);
+}
- switch (up->port.iotype) {
+static unsigned int mem_serial_in(struct uart_port *p, int offset)
+{
+ offset = map_8250_in_reg(p, offset) << p->regshift;
+ return readb(p->membase + offset);
+}
+
+static void mem_serial_out(struct uart_port *p, int offset, int value)
+{
+ offset = map_8250_out_reg(p, offset) << p->regshift;
+ writeb(value, p->membase + offset);
+}
+
+static void mem32_serial_out(struct uart_port *p, int offset, int value)
+{
+ offset = map_8250_out_reg(p, offset) << p->regshift;
+ writel(value, p->membase + offset);
+}
+
+static unsigned int mem32_serial_in(struct uart_port *p, int offset)
+{
+ offset = map_8250_in_reg(p, offset) << p->regshift;
+ return readl(p->membase + offset);
+}
+
+#ifdef CONFIG_SERIAL_8250_AU1X00
+static unsigned int au_serial_in(struct uart_port *p, int offset)
+{
+ offset = map_8250_in_reg(p, offset) << p->regshift;
+ return __raw_readl(p->membase + offset);
+}
+
+static void au_serial_out(struct uart_port *p, int offset, int value)
+{
+ offset = map_8250_out_reg(p, offset) << p->regshift;
+ __raw_writel(value, p->membase + offset);
+}
+#endif
+
+static unsigned int tsi_serial_in(struct uart_port *p, int offset)
+{
+ unsigned int tmp;
+ offset = map_8250_in_reg(p, offset) << p->regshift;
+ if (offset == UART_IIR) {
+ tmp = readl(p->membase + (UART_IIR & ~3));
+ return (tmp >> 16) & 0xff; /* UART_IIR % 4 == 2 */
+ } else
+ return readb(p->membase + offset);
+}
+
+static void tsi_serial_out(struct uart_port *p, int offset, int value)
+{
+ offset = map_8250_out_reg(p, offset) << p->regshift;
+ if (!((offset == UART_IER) && (value & UART_IER_UUE)))
+ writeb(value, p->membase + offset);
+}
+
+static void dwapb_serial_out(struct uart_port *p, int offset, int value)
+{
+ int save_offset = offset;
+ offset = map_8250_out_reg(p, offset) << p->regshift;
+ /* Save the LCR value so it can be re-written when a
+ * Busy Detect interrupt occurs. */
+ if (save_offset == UART_LCR) {
+ struct uart_8250_port *up = (struct uart_8250_port *)p;
+ up->lcr = value;
+ }
+ writeb(value, p->membase + offset);
+ /* Read the IER to ensure any interrupt is cleared before
+ * returning from ISR. */
+ if (save_offset == UART_TX || save_offset == UART_IER)
+ value = p->serial_in(p, UART_IER);
+}
+
+static unsigned int io_serial_in(struct uart_port *p, int offset)
+{
+ offset = map_8250_in_reg(p, offset) << p->regshift;
+ return inb(p->iobase + offset);
+}
+
+static void io_serial_out(struct uart_port *p, int offset, int value)
+{
+ offset = map_8250_out_reg(p, offset) << p->regshift;
+ outb(value, p->iobase + offset);
+}
+
+static void set_io_from_upio(struct uart_port *p)
+{
+ switch (p->iotype) {
case UPIO_HUB6:
- outb(up->port.hub6 - 1 + offset, up->port.iobase);
- outb(value, up->port.iobase + 1);
+ p->serial_in = hub6_serial_in;
+ p->serial_out = hub6_serial_out;
break;
case UPIO_MEM:
- writeb(value, up->port.membase + offset);
+ p->serial_in = mem_serial_in;
+ p->serial_out = mem_serial_out;
break;
case UPIO_RM9000:
case UPIO_MEM32:
- writel(value, up->port.membase + offset);
+ p->serial_in = mem32_serial_in;
+ p->serial_out = mem32_serial_out;
break;
#ifdef CONFIG_SERIAL_8250_AU1X00
case UPIO_AU:
- __raw_writel(value, up->port.membase + offset);
+ p->serial_in = au_serial_in;
+ p->serial_out = au_serial_out;
break;
#endif
case UPIO_TSI:
- if (!((offset == UART_IER) && (value & UART_IER_UUE)))
- writeb(value, up->port.membase + offset);
+ p->serial_in = tsi_serial_in;
+ p->serial_out = tsi_serial_out;
break;
case UPIO_DWAPB:
- /* Save the LCR value so it can be re-written when a
- * Busy Detect interrupt occurs. */
- if (save_offset == UART_LCR)
- up->lcr = value;
- writeb(value, up->port.membase + offset);
- /* Read the IER to ensure any interrupt is cleared before
- * returning from ISR. */
- if (save_offset == UART_TX || save_offset == UART_IER)
- value = serial_in(up, UART_IER);
+ p->serial_in = mem_serial_in;
+ p->serial_out = dwapb_serial_out;
break;
default:
- outb(value, up->port.iobase + offset);
+ p->serial_in = io_serial_in;
+ p->serial_out = io_serial_out;
+ break;
}
}
static void
serial_out_sync(struct uart_8250_port *up, int offset, int value)
{
- switch (up->port.iotype) {
+ struct uart_port *p = &up->port;
+ switch (p->iotype) {
case UPIO_MEM:
case UPIO_MEM32:
#ifdef CONFIG_SERIAL_8250_AU1X00
case UPIO_AU:
#endif
case UPIO_DWAPB:
- serial_out(up, offset, value);
- serial_in(up, UART_LCR); /* safe, no side-effects */
+ p->serial_out(p, offset, value);
+ p->serial_in(p, UART_LCR); /* safe, no side-effects */
break;
default:
- serial_out(up, offset, value);
+ p->serial_out(p, offset, value);
}
}
+#define serial_in(up, offset) \
+ (up->port.serial_in(&(up)->port, (offset)))
+#define serial_out(up, offset, value) \
+ (up->port.serial_out(&(up)->port, (offset), (value)))
/*
* We used to support using pause I/O for certain machines. We
* haven't supported this for a while, but just in case it's badly
@@ -2576,6 +2645,7 @@
up->port.membase = old_serial_port[i].iomem_base;
up->port.iotype = old_serial_port[i].io_type;
up->port.regshift = old_serial_port[i].iomem_reg_shift;
+ set_io_from_upio(&up->port);
if (share_irqs)
up->port.flags |= UPF_SHARE_IRQ;
}
@@ -2752,12 +2822,30 @@
*/
int __init early_serial_setup(struct uart_port *port)
{
+ struct uart_port *p;
+
if (port->line >= ARRAY_SIZE(serial8250_ports))
return -ENODEV;
serial8250_isa_init_ports();
- serial8250_ports[port->line].port = *port;
- serial8250_ports[port->line].port.ops = &serial8250_pops;
+ p = &serial8250_ports[port->line].port;
+ p->iobase = port->iobase;
+ p->membase = port->membase;
+ p->irq = port->irq;
+ p->uartclk = port->uartclk;
+ p->fifosize = port->fifosize;
+ p->regshift = port->regshift;
+ p->iotype = port->iotype;
+ p->flags = port->flags;
+ p->mapbase = port->mapbase;
+ p->private_data = port->private_data;
+
+ set_io_from_upio(p);
+ if (port->serial_in)
+ p->serial_in = port->serial_in;
+ if (port->serial_out)
+ p->serial_out = port->serial_out;
+
return 0;
}
@@ -2822,6 +2910,9 @@
port.mapbase = p->mapbase;
port.hub6 = p->hub6;
port.private_data = p->private_data;
+ port.type = p->type;
+ port.serial_in = p->serial_in;
+ port.serial_out = p->serial_out;
port.dev = &dev->dev;
if (share_irqs)
port.flags |= UPF_SHARE_IRQ;
@@ -2976,6 +3067,20 @@
if (port->dev)
uart->port.dev = port->dev;
+ if (port->flags & UPF_FIXED_TYPE) {
+ uart->port.type = port->type;
+ uart->port.fifosize = uart_config[port->type].fifo_size;
+ uart->capabilities = uart_config[port->type].flags;
+ uart->tx_loadsz = uart_config[port->type].tx_loadsz;
+ }
+
+ set_io_from_upio(&uart->port);
+ /* Possibly override default I/O functions. */
+ if (port->serial_in)
+ uart->port.serial_in = port->serial_in;
+ if (port->serial_out)
+ uart->port.serial_out = port->serial_out;
+
ret = uart_add_one_port(&serial8250_reg, &uart->port);
if (ret == 0)
ret = uart->port.line;
diff --git a/drivers/serial/8250_pci.c b/drivers/serial/8250_pci.c
index 5450a0e..c088146 100644
--- a/drivers/serial/8250_pci.c
+++ b/drivers/serial/8250_pci.c
@@ -42,7 +42,8 @@
u32 subvendor;
u32 subdevice;
int (*init)(struct pci_dev *dev);
- int (*setup)(struct serial_private *, struct pciserial_board *,
+ int (*setup)(struct serial_private *,
+ const struct pciserial_board *,
struct uart_port *, int);
void (*exit)(struct pci_dev *dev);
};
@@ -107,7 +108,7 @@
* ADDI-DATA GmbH communication cards <info@addi-data.com>
*/
static int addidata_apci7800_setup(struct serial_private *priv,
- struct pciserial_board *board,
+ const struct pciserial_board *board,
struct uart_port *port, int idx)
{
unsigned int bar = 0, offset = board->first_offset;
@@ -134,7 +135,7 @@
* Not that ugly ;) -- HW
*/
static int
-afavlab_setup(struct serial_private *priv, struct pciserial_board *board,
+afavlab_setup(struct serial_private *priv, const struct pciserial_board *board,
struct uart_port *port, int idx)
{
unsigned int bar, offset = board->first_offset;
@@ -188,8 +189,9 @@
* some serial ports are supposed to be hidden on certain models.
*/
static int
-pci_hp_diva_setup(struct serial_private *priv, struct pciserial_board *board,
- struct uart_port *port, int idx)
+pci_hp_diva_setup(struct serial_private *priv,
+ const struct pciserial_board *board,
+ struct uart_port *port, int idx)
{
unsigned int offset = board->first_offset;
unsigned int bar = FL_GET_BASE(board->flags);
@@ -306,7 +308,7 @@
/* SBS Technologies Inc. PMC-OCTPRO and P-OCTAL cards */
static int
-sbs_setup(struct serial_private *priv, struct pciserial_board *board,
+sbs_setup(struct serial_private *priv, const struct pciserial_board *board,
struct uart_port *port, int idx)
{
unsigned int bar, offset = board->first_offset;
@@ -463,7 +465,7 @@
}
static int pci_siig_setup(struct serial_private *priv,
- struct pciserial_board *board,
+ const struct pciserial_board *board,
struct uart_port *port, int idx)
{
unsigned int bar = FL_GET_BASE(board->flags) + idx, offset = 0;
@@ -534,7 +536,8 @@
* Ugh, this is ugly as all hell --- TYT
*/
static int
-pci_timedia_setup(struct serial_private *priv, struct pciserial_board *board,
+pci_timedia_setup(struct serial_private *priv,
+ const struct pciserial_board *board,
struct uart_port *port, int idx)
{
unsigned int bar = 0, offset = board->first_offset;
@@ -568,7 +571,7 @@
*/
static int
titan_400l_800l_setup(struct serial_private *priv,
- struct pciserial_board *board,
+ const struct pciserial_board *board,
struct uart_port *port, int idx)
{
unsigned int bar, offset = board->first_offset;
@@ -737,8 +740,41 @@
release_region(ioport, ITE_887x_IOSIZE);
}
+/*
+ * Oxford Semiconductor Inc.
+ * Check that device is part of the Tornado range of devices, then determine
+ * the number of ports available on the device.
+ */
+static int pci_oxsemi_tornado_init(struct pci_dev *dev)
+{
+ u8 __iomem *p;
+ unsigned long deviceID;
+ unsigned int number_uarts = 0;
+
+ /* OxSemi Tornado devices are all 0xCxxx */
+ if (dev->vendor == PCI_VENDOR_ID_OXSEMI &&
+ (dev->device & 0xF000) != 0xC000)
+ return 0;
+
+ p = pci_iomap(dev, 0, 5);
+ if (p == NULL)
+ return -ENOMEM;
+
+ deviceID = ioread32(p);
+ /* Tornado device */
+ if (deviceID == 0x07000200) {
+ number_uarts = ioread8(p + 4);
+ printk(KERN_DEBUG
+ "%d ports detected on Oxford PCI Express device\n",
+ number_uarts);
+ }
+ pci_iounmap(dev, p);
+ return number_uarts;
+}
+
static int
-pci_default_setup(struct serial_private *priv, struct pciserial_board *board,
+pci_default_setup(struct serial_private *priv,
+ const struct pciserial_board *board,
struct uart_port *port, int idx)
{
unsigned int bar, offset = board->first_offset, maxnr;
@@ -1018,6 +1054,25 @@
.setup = pci_default_setup,
},
/*
+ * For Oxford Semiconductor and Mainpine
+ */
+ {
+ .vendor = PCI_VENDOR_ID_OXSEMI,
+ .device = PCI_ANY_ID,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ .init = pci_oxsemi_tornado_init,
+ .setup = pci_default_setup,
+ },
+ {
+ .vendor = PCI_VENDOR_ID_MAINPINE,
+ .device = PCI_ANY_ID,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ .init = pci_oxsemi_tornado_init,
+ .setup = pci_default_setup,
+ },
+ /*
* Default "match everything" terminator entry
*/
{
@@ -1048,7 +1103,7 @@
}
static inline int get_pci_irq(struct pci_dev *dev,
- struct pciserial_board *board)
+ const struct pciserial_board *board)
{
if (board->flags & FL_NOIRQ)
return 0;
@@ -1843,8 +1898,8 @@
}
static inline int
-serial_pci_matches(struct pciserial_board *board,
- struct pciserial_board *guessed)
+serial_pci_matches(const struct pciserial_board *board,
+ const struct pciserial_board *guessed)
{
return
board->num_ports == guessed->num_ports &&
@@ -1854,54 +1909,14 @@
board->first_offset == guessed->first_offset;
}
-/*
- * Oxford Semiconductor Inc.
- * Check that device is part of the Tornado range of devices, then determine
- * the number of ports available on the device.
- */
-static int pci_oxsemi_tornado_init(struct pci_dev *dev, struct pciserial_board *board)
-{
- u8 __iomem *p;
- unsigned long deviceID;
- unsigned int number_uarts;
-
- /* OxSemi Tornado devices are all 0xCxxx */
- if (dev->vendor == PCI_VENDOR_ID_OXSEMI &&
- (dev->device & 0xF000) != 0xC000)
- return 0;
-
- p = pci_iomap(dev, 0, 5);
- if (p == NULL)
- return -ENOMEM;
-
- deviceID = ioread32(p);
- /* Tornado device */
- if (deviceID == 0x07000200) {
- number_uarts = ioread8(p + 4);
- board->num_ports = number_uarts;
- printk(KERN_DEBUG
- "%d ports detected on Oxford PCI Express device\n",
- number_uarts);
- }
- pci_iounmap(dev, p);
- return 0;
-}
-
struct serial_private *
-pciserial_init_ports(struct pci_dev *dev, struct pciserial_board *board)
+pciserial_init_ports(struct pci_dev *dev, const struct pciserial_board *board)
{
struct uart_port serial_port;
struct serial_private *priv;
struct pci_serial_quirk *quirk;
int rc, nr_ports, i;
- /*
- * Find number of ports on board
- */
- if (dev->vendor == PCI_VENDOR_ID_OXSEMI ||
- dev->vendor == PCI_VENDOR_ID_MAINPINE)
- pci_oxsemi_tornado_init(dev, board);
-
nr_ports = board->num_ports;
/*
@@ -2028,7 +2043,8 @@
pciserial_init_one(struct pci_dev *dev, const struct pci_device_id *ent)
{
struct serial_private *priv;
- struct pciserial_board *board, tmp;
+ const struct pciserial_board *board;
+ struct pciserial_board tmp;
int rc;
if (ent->driver_data >= ARRAY_SIZE(pci_boards)) {
@@ -2055,7 +2071,7 @@
* We matched one of our class entries. Try to
* determine the parameters of this board.
*/
- rc = serial_pci_guess_board(dev, board);
+ rc = serial_pci_guess_board(dev, &tmp);
if (rc)
goto disable;
} else {
@@ -2271,6 +2287,9 @@
{ PCI_VENDOR_ID_SEALEVEL, PCI_DEVICE_ID_SEALEVEL_COMM8,
PCI_ANY_ID, PCI_ANY_ID, 0, 0,
pbn_b2_8_115200 },
+ { PCI_VENDOR_ID_SEALEVEL, PCI_DEVICE_ID_SEALEVEL_7803,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_b2_8_460800 },
{ PCI_VENDOR_ID_SEALEVEL, PCI_DEVICE_ID_SEALEVEL_UCOMM8,
PCI_ANY_ID, PCI_ANY_ID, 0, 0,
pbn_b2_8_115200 },
@@ -2372,6 +2391,9 @@
* For now just used the hex ID 0x950a.
*/
{ PCI_VENDOR_ID_OXSEMI, 0x950a,
+ PCI_SUBVENDOR_ID_SIIG, PCI_SUBDEVICE_ID_SIIG_DUAL_SERIAL, 0, 0,
+ pbn_b0_2_115200 },
+ { PCI_VENDOR_ID_OXSEMI, 0x950a,
PCI_ANY_ID, PCI_ANY_ID, 0, 0,
pbn_b0_2_1130000 },
{ PCI_VENDOR_ID_OXSEMI, PCI_DEVICE_ID_OXSEMI_16PCI954,
diff --git a/drivers/serial/bfin_5xx.c b/drivers/serial/bfin_5xx.c
index 569f0e2..318d69d 100644
--- a/drivers/serial/bfin_5xx.c
+++ b/drivers/serial/bfin_5xx.c
@@ -22,7 +22,8 @@
#include <linux/tty_flip.h>
#include <linux/serial_core.h>
-#ifdef CONFIG_KGDB_UART
+#if defined(CONFIG_KGDB_SERIAL_CONSOLE) || \
+ defined(CONFIG_KGDB_SERIAL_CONSOLE_MODULE)
#include <linux/kgdb.h>
#include <asm/irq_regs.h>
#endif
@@ -45,6 +46,16 @@
static struct bfin_serial_port bfin_serial_ports[BFIN_UART_NR_PORTS];
static int nr_active_ports = ARRAY_SIZE(bfin_serial_resource);
+#if defined(CONFIG_KGDB_SERIAL_CONSOLE) || \
+ defined(CONFIG_KGDB_SERIAL_CONSOLE_MODULE)
+
+# ifndef CONFIG_SERIAL_BFIN_PIO
+# error KGDB only support UART in PIO mode.
+# endif
+
+static int kgdboc_port_line;
+static int kgdboc_break_enabled;
+#endif
/*
* Setup for console. Argument comes from the menuconfig
*/
@@ -62,13 +73,17 @@
static void bfin_serial_mctrl_check(struct bfin_serial_port *uart);
+static void bfin_serial_reset_irda(struct uart_port *port);
+
/*
* interrupts are disabled on entry
*/
static void bfin_serial_stop_tx(struct uart_port *port)
{
struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
+#ifdef CONFIG_SERIAL_BFIN_DMA
struct circ_buf *xmit = &uart->port.info->xmit;
+#endif
while (!(UART_GET_LSR(uart) & TEMT))
cpu_relax();
@@ -94,6 +109,14 @@
static void bfin_serial_start_tx(struct uart_port *port)
{
struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
+ struct tty_struct *tty = uart->port.info->port.tty;
+
+ /*
+ * To avoid losting RX interrupt, we reset IR function
+ * before sending data.
+ */
+ if (tty->termios->c_line == N_IRDA)
+ bfin_serial_reset_irda(port);
#ifdef CONFIG_SERIAL_BFIN_DMA
if (uart->tx_done)
@@ -110,9 +133,7 @@
static void bfin_serial_stop_rx(struct uart_port *port)
{
struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
-#ifdef CONFIG_KGDB_UART
- if (uart->port.line != CONFIG_KGDB_UART_PORT)
-#endif
+
UART_CLEAR_IER(uart, ERBFI);
}
@@ -123,49 +144,6 @@
{
}
-#ifdef CONFIG_KGDB_UART
-static int kgdb_entry_state;
-
-void kgdb_put_debug_char(int chr)
-{
- struct bfin_serial_port *uart;
-
- if (CONFIG_KGDB_UART_PORT < 0
- || CONFIG_KGDB_UART_PORT >= BFIN_UART_NR_PORTS)
- uart = &bfin_serial_ports[0];
- else
- uart = &bfin_serial_ports[CONFIG_KGDB_UART_PORT];
-
- while (!(UART_GET_LSR(uart) & THRE)) {
- SSYNC();
- }
-
- UART_CLEAR_DLAB(uart);
- UART_PUT_CHAR(uart, (unsigned char)chr);
- SSYNC();
-}
-
-int kgdb_get_debug_char(void)
-{
- struct bfin_serial_port *uart;
- unsigned char chr;
-
- if (CONFIG_KGDB_UART_PORT < 0
- || CONFIG_KGDB_UART_PORT >= BFIN_UART_NR_PORTS)
- uart = &bfin_serial_ports[0];
- else
- uart = &bfin_serial_ports[CONFIG_KGDB_UART_PORT];
-
- while(!(UART_GET_LSR(uart) & DR)) {
- SSYNC();
- }
- UART_CLEAR_DLAB(uart);
- chr = UART_GET_CHAR(uart);
- SSYNC();
-
- return chr;
-}
-#endif
#if ANOMALY_05000363 && defined(CONFIG_SERIAL_BFIN_PIO)
# define UART_GET_ANOMALY_THRESHOLD(uart) ((uart)->anomaly_threshold)
@@ -178,7 +156,7 @@
#ifdef CONFIG_SERIAL_BFIN_PIO
static void bfin_serial_rx_chars(struct bfin_serial_port *uart)
{
- struct tty_struct *tty = uart->port.info->port.tty;
+ struct tty_struct *tty = NULL;
unsigned int status, ch, flg;
static struct timeval anomaly_start = { .tv_sec = 0 };
@@ -188,27 +166,18 @@
ch = UART_GET_CHAR(uart);
uart->port.icount.rx++;
-#ifdef CONFIG_KGDB_UART
- if (uart->port.line == CONFIG_KGDB_UART_PORT) {
- struct pt_regs *regs = get_irq_regs();
- if (uart->port.cons->index == CONFIG_KGDB_UART_PORT && ch == 0x1) { /* Ctrl + A */
- kgdb_breakkey_pressed(regs);
+#if defined(CONFIG_KGDB_SERIAL_CONSOLE) || \
+ defined(CONFIG_KGDB_SERIAL_CONSOLE_MODULE)
+ if (kgdb_connected && kgdboc_port_line == uart->port.line)
+ if (ch == 0x3) {/* Ctrl + C */
+ kgdb_breakpoint();
return;
- } else if (kgdb_entry_state == 0 && ch == '$') {/* connection from KGDB */
- kgdb_entry_state = 1;
- } else if (kgdb_entry_state == 1 && ch == 'q') {
- kgdb_entry_state = 0;
- kgdb_breakkey_pressed(regs);
- return;
- } else if (ch == 0x3) {/* Ctrl + C */
- kgdb_entry_state = 0;
- kgdb_breakkey_pressed(regs);
- return;
- } else {
- kgdb_entry_state = 0;
}
- }
+
+ if (!uart->port.info || !uart->port.info->tty)
+ return;
#endif
+ tty = uart->port.info->tty;
if (ANOMALY_05000363) {
/* The BF533 (and BF561) family of processors have a nice anomaly
@@ -250,6 +219,7 @@
return;
known_good_char:
+ status &= ~BI;
anomaly_start.tv_sec = 0;
}
}
@@ -445,7 +415,9 @@
void bfin_serial_rx_dma_timeout(struct bfin_serial_port *uart)
{
- int x_pos, pos;
+ int x_pos, pos, flags;
+
+ spin_lock_irqsave(&uart->port.lock, flags);
uart->rx_dma_nrows = get_dma_curr_ycount(uart->rx_dma_channel);
x_pos = get_dma_curr_xcount(uart->rx_dma_channel);
@@ -463,6 +435,8 @@
uart->rx_dma_buf.tail = uart->rx_dma_buf.head;
}
+ spin_unlock_irqrestore(&uart->port.lock, flags);
+
mod_timer(&(uart->rx_dma_timer), jiffies + DMA_RX_FLUSH_JIFFIES);
}
@@ -497,10 +471,9 @@
spin_lock(&uart->port.lock);
irqstat = get_dma_curr_irqstat(uart->rx_dma_channel);
clear_dma_irqstat(uart->rx_dma_channel);
+ bfin_serial_dma_rx_chars(uart);
spin_unlock(&uart->port.lock);
- mod_timer(&(uart->rx_dma_timer), jiffies);
-
return IRQ_HANDLED;
}
#endif
@@ -630,16 +603,16 @@
uart->rx_dma_timer.expires = jiffies + DMA_RX_FLUSH_JIFFIES;
add_timer(&(uart->rx_dma_timer));
#else
+#if defined(CONFIG_KGDB_SERIAL_CONSOLE) || \
+ defined(CONFIG_KGDB_SERIAL_CONSOLE_MODULE)
+ if (kgdboc_port_line == uart->port.line && kgdboc_break_enabled)
+ kgdboc_break_enabled = 0;
+ else {
+# endif
if (request_irq(uart->port.irq, bfin_serial_rx_int, IRQF_DISABLED,
"BFIN_UART_RX", uart)) {
-# ifdef CONFIG_KGDB_UART
- if (uart->port.line != CONFIG_KGDB_UART_PORT) {
-# endif
printk(KERN_NOTICE "Unable to attach BlackFin UART RX interrupt\n");
return -EBUSY;
-# ifdef CONFIG_KGDB_UART
- }
-# endif
}
if (request_irq
@@ -685,6 +658,10 @@
}
}
# endif
+#if defined(CONFIG_KGDB_SERIAL_CONSOLE) || \
+ defined(CONFIG_KGDB_SERIAL_CONSOLE_MODULE)
+ }
+# endif
#endif
UART_SET_IER(uart, ERBFI);
return 0;
@@ -716,9 +693,6 @@
break;
};
#endif
-#ifdef CONFIG_KGDB_UART
- if (uart->port.line != CONFIG_KGDB_UART_PORT)
-#endif
free_irq(uart->port.irq, uart);
free_irq(uart->port.irq+1, uart);
#endif
@@ -887,6 +861,65 @@
}
}
+#ifdef CONFIG_CONSOLE_POLL
+static void bfin_serial_poll_put_char(struct uart_port *port, unsigned char chr)
+{
+ struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
+
+ while (!(UART_GET_LSR(uart) & THRE))
+ cpu_relax();
+
+ UART_CLEAR_DLAB(uart);
+ UART_PUT_CHAR(uart, (unsigned char)chr);
+}
+
+static int bfin_serial_poll_get_char(struct uart_port *port)
+{
+ struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
+ unsigned char chr;
+
+ while (!(UART_GET_LSR(uart) & DR))
+ cpu_relax();
+
+ UART_CLEAR_DLAB(uart);
+ chr = UART_GET_CHAR(uart);
+
+ return chr;
+}
+#endif
+
+#if defined(CONFIG_KGDB_SERIAL_CONSOLE) || \
+ defined(CONFIG_KGDB_SERIAL_CONSOLE_MODULE)
+static void bfin_kgdboc_port_shutdown(struct uart_port *port)
+{
+ if (kgdboc_break_enabled) {
+ kgdboc_break_enabled = 0;
+ bfin_serial_shutdown(port);
+ }
+}
+
+static int bfin_kgdboc_port_startup(struct uart_port *port)
+{
+ kgdboc_port_line = port->line;
+ kgdboc_break_enabled = !bfin_serial_startup(port);
+ return 0;
+}
+#endif
+
+static void bfin_serial_reset_irda(struct uart_port *port)
+{
+ int line = port->line;
+ unsigned short val;
+
+ val = UART_GET_GCTL(&bfin_serial_ports[line]);
+ val &= ~(IREN | RPOLC);
+ UART_PUT_GCTL(&bfin_serial_ports[line], val);
+ SSYNC();
+ val |= (IREN | RPOLC);
+ UART_PUT_GCTL(&bfin_serial_ports[line], val);
+ SSYNC();
+}
+
static struct uart_ops bfin_serial_pops = {
.tx_empty = bfin_serial_tx_empty,
.set_mctrl = bfin_serial_set_mctrl,
@@ -905,6 +938,15 @@
.request_port = bfin_serial_request_port,
.config_port = bfin_serial_config_port,
.verify_port = bfin_serial_verify_port,
+#if defined(CONFIG_KGDB_SERIAL_CONSOLE) || \
+ defined(CONFIG_KGDB_SERIAL_CONSOLE_MODULE)
+ .kgdboc_port_startup = bfin_kgdboc_port_startup,
+ .kgdboc_port_shutdown = bfin_kgdboc_port_shutdown,
+#endif
+#ifdef CONFIG_CONSOLE_POLL
+ .poll_put_char = bfin_serial_poll_put_char,
+ .poll_get_char = bfin_serial_poll_get_char,
+#endif
};
static void __init bfin_serial_init_ports(void)
@@ -950,7 +992,7 @@
}
-#ifdef CONFIG_SERIAL_BFIN_CONSOLE
+#if defined(CONFIG_SERIAL_BFIN_CONSOLE) || defined(CONFIG_EARLY_PRINTK)
/*
* If the port was already initialised (eg, by a boot loader),
* try to determine the current setup.
@@ -994,24 +1036,20 @@
}
pr_debug("%s:baud = %d, parity = %c, bits= %d\n", __func__, *baud, *parity, *bits);
}
-#endif
-#if defined(CONFIG_SERIAL_BFIN_CONSOLE) || defined(CONFIG_EARLY_PRINTK)
static struct uart_driver bfin_serial_reg;
static int __init
bfin_serial_console_setup(struct console *co, char *options)
{
struct bfin_serial_port *uart;
-# ifdef CONFIG_SERIAL_BFIN_CONSOLE
int baud = 57600;
int bits = 8;
int parity = 'n';
-# ifdef CONFIG_SERIAL_BFIN_CTSRTS
+# ifdef CONFIG_SERIAL_BFIN_CTSRTS
int flow = 'r';
-# else
+# else
int flow = 'n';
-# endif
# endif
/*
@@ -1023,16 +1061,12 @@
co->index = 0;
uart = &bfin_serial_ports[co->index];
-# ifdef CONFIG_SERIAL_BFIN_CONSOLE
if (options)
uart_parse_options(options, &baud, &parity, &bits, &flow);
else
bfin_serial_console_get_options(uart, &baud, &parity, &bits);
return uart_set_options(&uart->port, co, baud, parity, bits, flow);
-# else
- return 0;
-# endif
}
#endif /* defined (CONFIG_SERIAL_BFIN_CONSOLE) ||
defined (CONFIG_EARLY_PRINTK) */
@@ -1076,10 +1110,7 @@
{
bfin_serial_init_ports();
register_console(&bfin_serial_console);
-#ifdef CONFIG_KGDB_UART
- kgdb_entry_state = 0;
- init_kgdb_uart();
-#endif
+
return 0;
}
console_initcall(bfin_serial_rs_console_init);
@@ -1144,7 +1175,7 @@
return &bfin_early_serial_console;
}
-#endif /* CONFIG_SERIAL_BFIN_CONSOLE */
+#endif /* CONFIG_EARLY_PRINTK */
static struct uart_driver bfin_serial_reg = {
.owner = THIS_MODULE,
@@ -1235,10 +1266,6 @@
static int __init bfin_serial_init(void)
{
int ret;
-#ifdef CONFIG_KGDB_UART
- struct bfin_serial_port *uart = &bfin_serial_ports[CONFIG_KGDB_UART_PORT];
- struct ktermios t;
-#endif
pr_info("Serial: Blackfin serial driver\n");
@@ -1252,21 +1279,6 @@
uart_unregister_driver(&bfin_serial_reg);
}
}
-#ifdef CONFIG_KGDB_UART
- if (uart->port.cons->index != CONFIG_KGDB_UART_PORT) {
- request_irq(uart->port.irq, bfin_serial_rx_int,
- IRQF_DISABLED, "BFIN_UART_RX", uart);
- pr_info("Request irq for kgdb uart port\n");
- UART_SET_IER(uart, ERBFI);
- SSYNC();
- t.c_cflag = CS8|B57600;
- t.c_iflag = 0;
- t.c_oflag = 0;
- t.c_lflag = ICANON;
- t.c_line = CONFIG_KGDB_UART_PORT;
- bfin_serial_set_termios(&uart->port, &t, &t);
- }
-#endif
return ret;
}
@@ -1276,6 +1288,7 @@
uart_unregister_driver(&bfin_serial_reg);
}
+
module_init(bfin_serial_init);
module_exit(bfin_serial_exit);
diff --git a/drivers/serial/bfin_sport_uart.c b/drivers/serial/bfin_sport_uart.c
index dd8564d..529c0ff 100644
--- a/drivers/serial/bfin_sport_uart.c
+++ b/drivers/serial/bfin_sport_uart.c
@@ -99,7 +99,7 @@
static inline void tx_one_byte(struct sport_uart_port *up, unsigned int value)
{
- pr_debug("%s value:%x\n", __FUNCTION__, value);
+ pr_debug("%s value:%x\n", __func__, value);
/* Place a Start and Stop bit */
__asm__ volatile (
"R2 = b#01111111100;\n\t"
@@ -110,7 +110,7 @@
:"=r"(value)
:"0"(value)
:"R2", "R3");
- pr_debug("%s value:%x\n", __FUNCTION__, value);
+ pr_debug("%s value:%x\n", __func__, value);
SPORT_PUT_TX(up, value);
}
@@ -120,7 +120,7 @@
unsigned int value, extract;
value = SPORT_GET_RX32(up);
- pr_debug("%s value:%x\n", __FUNCTION__, value);
+ pr_debug("%s value:%x\n", __func__, value);
/* Extract 8 bits data */
__asm__ volatile (
@@ -151,12 +151,12 @@
/* Set TCR1 and TCR2 */
SPORT_PUT_TCR1(up, (LTFS | ITFS | TFSR | TLSBIT | ITCLK));
SPORT_PUT_TCR2(up, 10);
- pr_debug("%s TCR1:%x, TCR2:%x\n", __FUNCTION__, SPORT_GET_TCR1(up), SPORT_GET_TCR2(up));
+ pr_debug("%s TCR1:%x, TCR2:%x\n", __func__, SPORT_GET_TCR1(up), SPORT_GET_TCR2(up));
/* Set RCR1 and RCR2 */
SPORT_PUT_RCR1(up, (RCKFE | LARFS | LRFS | RFSR | IRCLK));
SPORT_PUT_RCR2(up, 28);
- pr_debug("%s RCR1:%x, RCR2:%x\n", __FUNCTION__, SPORT_GET_RCR1(up), SPORT_GET_RCR2(up));
+ pr_debug("%s RCR1:%x, RCR2:%x\n", __func__, SPORT_GET_RCR1(up), SPORT_GET_RCR2(up));
tclkdiv = sclk/(2 * baud_rate) - 1;
tfsdiv = 12;
@@ -166,7 +166,7 @@
SPORT_PUT_RCLKDIV(up, rclkdiv);
SSYNC();
pr_debug("%s sclk:%d, baud_rate:%d, tclkdiv:%d, tfsdiv:%d, rclkdiv:%d\n",
- __FUNCTION__, sclk, baud_rate, tclkdiv, tfsdiv, rclkdiv);
+ __func__, sclk, baud_rate, tclkdiv, tfsdiv, rclkdiv);
return 0;
}
@@ -231,7 +231,7 @@
char buffer[20];
int retval;
- pr_debug("%s enter\n", __FUNCTION__);
+ pr_debug("%s enter\n", __func__);
memset(buffer, 20, '\0');
snprintf(buffer, 20, "%s rx", up->name);
retval = request_irq(up->rx_irq, sport_uart_rx_irq, IRQF_SAMPLE_RANDOM, buffer, up);
@@ -320,7 +320,7 @@
unsigned int stat;
stat = SPORT_GET_STAT(up);
- pr_debug("%s stat:%04x\n", __FUNCTION__, stat);
+ pr_debug("%s stat:%04x\n", __func__, stat);
if (stat & TXHRE) {
return TIOCSER_TEMT;
} else
@@ -329,13 +329,13 @@
static unsigned int sport_get_mctrl(struct uart_port *port)
{
- pr_debug("%s enter\n", __FUNCTION__);
+ pr_debug("%s enter\n", __func__);
return (TIOCM_CTS | TIOCM_CD | TIOCM_DSR);
}
static void sport_set_mctrl(struct uart_port *port, unsigned int mctrl)
{
- pr_debug("%s enter\n", __FUNCTION__);
+ pr_debug("%s enter\n", __func__);
}
static void sport_stop_tx(struct uart_port *port)
@@ -343,7 +343,7 @@
struct sport_uart_port *up = (struct sport_uart_port *)port;
unsigned int stat;
- pr_debug("%s enter\n", __FUNCTION__);
+ pr_debug("%s enter\n", __func__);
stat = SPORT_GET_STAT(up);
while(!(stat & TXHRE)) {
@@ -366,21 +366,21 @@
{
struct sport_uart_port *up = (struct sport_uart_port *)port;
- pr_debug("%s enter\n", __FUNCTION__);
+ pr_debug("%s enter\n", __func__);
/* Write data into SPORT FIFO before enable SPROT to transmit */
sport_uart_tx_chars(up);
/* Enable transmit, then an interrupt will generated */
SPORT_PUT_TCR1(up, (SPORT_GET_TCR1(up) | TSPEN));
SSYNC();
- pr_debug("%s exit\n", __FUNCTION__);
+ pr_debug("%s exit\n", __func__);
}
static void sport_stop_rx(struct uart_port *port)
{
struct sport_uart_port *up = (struct sport_uart_port *)port;
- pr_debug("%s enter\n", __FUNCTION__);
+ pr_debug("%s enter\n", __func__);
/* Disable sport to stop rx */
SPORT_PUT_RCR1(up, (SPORT_GET_RCR1(up) & ~RSPEN));
SSYNC();
@@ -388,19 +388,19 @@
static void sport_enable_ms(struct uart_port *port)
{
- pr_debug("%s enter\n", __FUNCTION__);
+ pr_debug("%s enter\n", __func__);
}
static void sport_break_ctl(struct uart_port *port, int break_state)
{
- pr_debug("%s enter\n", __FUNCTION__);
+ pr_debug("%s enter\n", __func__);
}
static void sport_shutdown(struct uart_port *port)
{
struct sport_uart_port *up = (struct sport_uart_port *)port;
- pr_debug("%s enter\n", __FUNCTION__);
+ pr_debug("%s enter\n", __func__);
/* Disable sport */
SPORT_PUT_TCR1(up, (SPORT_GET_TCR1(up) & ~TSPEN));
@@ -421,7 +421,7 @@
static void sport_set_termios(struct uart_port *port,
struct termios *termios, struct termios *old)
{
- pr_debug("%s enter, c_cflag:%08x\n", __FUNCTION__, termios->c_cflag);
+ pr_debug("%s enter, c_cflag:%08x\n", __func__, termios->c_cflag);
uart_update_timeout(port, CS8 ,port->uartclk);
}
@@ -429,18 +429,18 @@
{
struct sport_uart_port *up = (struct sport_uart_port *)port;
- pr_debug("%s enter\n", __FUNCTION__);
+ pr_debug("%s enter\n", __func__);
return up->name;
}
static void sport_release_port(struct uart_port *port)
{
- pr_debug("%s enter\n", __FUNCTION__);
+ pr_debug("%s enter\n", __func__);
}
static int sport_request_port(struct uart_port *port)
{
- pr_debug("%s enter\n", __FUNCTION__);
+ pr_debug("%s enter\n", __func__);
return 0;
}
@@ -448,13 +448,13 @@
{
struct sport_uart_port *up = (struct sport_uart_port *)port;
- pr_debug("%s enter\n", __FUNCTION__);
+ pr_debug("%s enter\n", __func__);
up->port.type = PORT_BFIN_SPORT;
}
static int sport_verify_port(struct uart_port *port, struct serial_struct *ser)
{
- pr_debug("%s enter\n", __FUNCTION__);
+ pr_debug("%s enter\n", __func__);
return 0;
}
@@ -527,7 +527,7 @@
{
struct sport_uart_port *sport = platform_get_drvdata(dev);
- pr_debug("%s enter\n", __FUNCTION__);
+ pr_debug("%s enter\n", __func__);
if (sport)
uart_suspend_port(&sport_uart_reg, &sport->port);
@@ -538,7 +538,7 @@
{
struct sport_uart_port *sport = platform_get_drvdata(dev);
- pr_debug("%s enter\n", __FUNCTION__);
+ pr_debug("%s enter\n", __func__);
if (sport)
uart_resume_port(&sport_uart_reg, &sport->port);
@@ -547,7 +547,7 @@
static int sport_uart_probe(struct platform_device *dev)
{
- pr_debug("%s enter\n", __FUNCTION__);
+ pr_debug("%s enter\n", __func__);
sport_uart_ports[dev->id].port.dev = &dev->dev;
uart_add_one_port(&sport_uart_reg, &sport_uart_ports[dev->id].port);
platform_set_drvdata(dev, &sport_uart_ports[dev->id]);
@@ -559,7 +559,7 @@
{
struct sport_uart_port *sport = platform_get_drvdata(dev);
- pr_debug("%s enter\n", __FUNCTION__);
+ pr_debug("%s enter\n", __func__);
platform_set_drvdata(dev, NULL);
if (sport)
@@ -582,7 +582,7 @@
{
int ret;
- pr_debug("%s enter\n", __FUNCTION__);
+ pr_debug("%s enter\n", __func__);
ret = uart_register_driver(&sport_uart_reg);
if (ret != 0) {
printk(KERN_ERR "Failed to register %s:%d\n",
@@ -597,13 +597,13 @@
}
- pr_debug("%s exit\n", __FUNCTION__);
+ pr_debug("%s exit\n", __func__);
return ret;
}
static void __exit sport_uart_exit(void)
{
- pr_debug("%s enter\n", __FUNCTION__);
+ pr_debug("%s enter\n", __func__);
platform_driver_unregister(&sport_uart_driver);
uart_unregister_driver(&sport_uart_reg);
}
diff --git a/drivers/serial/jsm/jsm_tty.c b/drivers/serial/jsm/jsm_tty.c
index a697914..3547558 100644
--- a/drivers/serial/jsm/jsm_tty.c
+++ b/drivers/serial/jsm/jsm_tty.c
@@ -272,7 +272,7 @@
jsm_printk(CLOSE, INFO, &channel->ch_bd->pci_dev, "start\n");
bd = channel->ch_bd;
- ts = channel->uart_port.info->port.tty->termios;
+ ts = port->info->port.tty->termios;
channel->ch_flags &= ~(CH_STOPI);
diff --git a/drivers/serial/serial_core.c b/drivers/serial/serial_core.c
index 874786a..dc68b7e 100644
--- a/drivers/serial/serial_core.c
+++ b/drivers/serial/serial_core.c
@@ -50,7 +50,7 @@
#define HIGH_BITS_OFFSET ((sizeof(long)-sizeof(int))*8)
-#define uart_users(state) ((state)->count + ((state)->info ? (state)->info->port.blocked_open : 0))
+#define uart_users(state) ((state)->count + (state)->info.port.blocked_open)
#ifdef CONFIG_SERIAL_CORE_CONSOLE
#define uart_console(port) ((port)->cons && (port)->cons->index == (port)->line)
@@ -94,7 +94,7 @@
struct uart_state *state = tty->driver_data;
struct uart_port *port = state->port;
- if (!uart_circ_empty(&state->info->xmit) && state->info->xmit.buf &&
+ if (!uart_circ_empty(&state->info.xmit) && state->info.xmit.buf &&
!tty->stopped && !tty->hw_stopped)
port->ops->start_tx(port);
}
@@ -113,7 +113,7 @@
static void uart_tasklet_action(unsigned long data)
{
struct uart_state *state = (struct uart_state *)data;
- tty_wakeup(state->info->port.tty);
+ tty_wakeup(state->info.port.tty);
}
static inline void
@@ -139,7 +139,7 @@
*/
static int uart_startup(struct uart_state *state, int init_hw)
{
- struct uart_info *info = state->info;
+ struct uart_info *info = &state->info;
struct uart_port *port = state->port;
unsigned long page;
int retval = 0;
@@ -212,14 +212,15 @@
*/
static void uart_shutdown(struct uart_state *state)
{
- struct uart_info *info = state->info;
+ struct uart_info *info = &state->info;
struct uart_port *port = state->port;
+ struct tty_struct *tty = info->port.tty;
/*
* Set the TTY IO error marker
*/
- if (info->port.tty)
- set_bit(TTY_IO_ERROR, &info->port.tty->flags);
+ if (tty)
+ set_bit(TTY_IO_ERROR, &tty->flags);
if (info->flags & UIF_INITIALIZED) {
info->flags &= ~UIF_INITIALIZED;
@@ -227,7 +228,7 @@
/*
* Turn off DTR and RTS early.
*/
- if (!info->port.tty || (info->port.tty->termios->c_cflag & HUPCL))
+ if (!tty || (tty->termios->c_cflag & HUPCL))
uart_clear_mctrl(port, TIOCM_DTR | TIOCM_RTS);
/*
@@ -427,7 +428,7 @@
static void
uart_change_speed(struct uart_state *state, struct ktermios *old_termios)
{
- struct tty_struct *tty = state->info->port.tty;
+ struct tty_struct *tty = state->info.port.tty;
struct uart_port *port = state->port;
struct ktermios *termios;
@@ -444,14 +445,14 @@
* Set flags based on termios cflag
*/
if (termios->c_cflag & CRTSCTS)
- state->info->flags |= UIF_CTS_FLOW;
+ state->info.flags |= UIF_CTS_FLOW;
else
- state->info->flags &= ~UIF_CTS_FLOW;
+ state->info.flags &= ~UIF_CTS_FLOW;
if (termios->c_cflag & CLOCAL)
- state->info->flags &= ~UIF_CHECK_CD;
+ state->info.flags &= ~UIF_CHECK_CD;
else
- state->info->flags |= UIF_CHECK_CD;
+ state->info.flags |= UIF_CHECK_CD;
port->ops->set_termios(port, termios, old_termios);
}
@@ -479,7 +480,7 @@
{
struct uart_state *state = tty->driver_data;
- return __uart_put_char(state->port, &state->info->xmit, ch);
+ return __uart_put_char(state->port, &state->info.xmit, ch);
}
static void uart_flush_chars(struct tty_struct *tty)
@@ -500,13 +501,13 @@
* This means you called this function _after_ the port was
* closed. No cookie for you.
*/
- if (!state || !state->info) {
+ if (!state) {
WARN_ON(1);
return -EL3HLT;
}
port = state->port;
- circ = &state->info->xmit;
+ circ = &state->info.xmit;
if (!circ->buf)
return 0;
@@ -537,7 +538,7 @@
int ret;
spin_lock_irqsave(&state->port->lock, flags);
- ret = uart_circ_chars_free(&state->info->xmit);
+ ret = uart_circ_chars_free(&state->info.xmit);
spin_unlock_irqrestore(&state->port->lock, flags);
return ret;
}
@@ -549,7 +550,7 @@
int ret;
spin_lock_irqsave(&state->port->lock, flags);
- ret = uart_circ_chars_pending(&state->info->xmit);
+ ret = uart_circ_chars_pending(&state->info.xmit);
spin_unlock_irqrestore(&state->port->lock, flags);
return ret;
}
@@ -564,7 +565,7 @@
* This means you called this function _after_ the port was
* closed. No cookie for you.
*/
- if (!state || !state->info) {
+ if (!state) {
WARN_ON(1);
return;
}
@@ -573,7 +574,7 @@
pr_debug("uart_flush_buffer(%d) called\n", tty->index);
spin_lock_irqsave(&port->lock, flags);
- uart_circ_clear(&state->info->xmit);
+ uart_circ_clear(&state->info.xmit);
if (port->ops->flush_buffer)
port->ops->flush_buffer(port);
spin_unlock_irqrestore(&port->lock, flags);
@@ -837,15 +838,15 @@
state->closing_wait = closing_wait;
if (new_serial.xmit_fifo_size)
port->fifosize = new_serial.xmit_fifo_size;
- if (state->info->port.tty)
- state->info->port.tty->low_latency =
+ if (state->info.port.tty)
+ state->info.port.tty->low_latency =
(port->flags & UPF_LOW_LATENCY) ? 1 : 0;
check_and_exit:
retval = 0;
if (port->type == PORT_UNKNOWN)
goto exit;
- if (state->info->flags & UIF_INITIALIZED) {
+ if (state->info.flags & UIF_INITIALIZED) {
if (((old_flags ^ port->flags) & UPF_SPD_MASK) ||
old_custom_divisor != port->custom_divisor) {
/*
@@ -858,7 +859,7 @@
printk(KERN_NOTICE
"%s sets custom speed on %s. This "
"is deprecated.\n", current->comm,
- tty_name(state->info->port.tty, buf));
+ tty_name(state->info.port.tty, buf));
}
uart_change_speed(state, NULL);
}
@@ -889,8 +890,8 @@
* interrupt happens).
*/
if (port->x_char ||
- ((uart_circ_chars_pending(&state->info->xmit) > 0) &&
- !state->info->port.tty->stopped && !state->info->port.tty->hw_stopped))
+ ((uart_circ_chars_pending(&state->info.xmit) > 0) &&
+ !state->info.port.tty->stopped && !state->info.port.tty->hw_stopped))
result &= ~TIOCSER_TEMT;
return put_user(result, value);
@@ -1017,7 +1018,7 @@
port->ops->enable_ms(port);
spin_unlock_irq(&port->lock);
- add_wait_queue(&state->info->delta_msr_wait, &wait);
+ add_wait_queue(&state->info.delta_msr_wait, &wait);
for (;;) {
spin_lock_irq(&port->lock);
memcpy(&cnow, &port->icount, sizeof(struct uart_icount));
@@ -1045,7 +1046,7 @@
}
current->state = TASK_RUNNING;
- remove_wait_queue(&state->info->delta_msr_wait, &wait);
+ remove_wait_queue(&state->info.delta_msr_wait, &wait);
return ret;
}
@@ -1241,7 +1242,7 @@
*/
if (!(old_termios->c_cflag & CLOCAL) &&
(tty->termios->c_cflag & CLOCAL))
- wake_up_interruptible(&state->info->port.open_wait);
+ wake_up_interruptible(&info->port.open_wait);
#endif
}
@@ -1303,7 +1304,7 @@
* At this point, we stop accepting input. To do this, we
* disable the receive line status interrupts.
*/
- if (state->info->flags & UIF_INITIALIZED) {
+ if (state->info.flags & UIF_INITIALIZED) {
unsigned long flags;
spin_lock_irqsave(&port->lock, flags);
port->ops->stop_rx(port);
@@ -1322,9 +1323,9 @@
tty_ldisc_flush(tty);
tty->closing = 0;
- state->info->port.tty = NULL;
+ state->info.port.tty = NULL;
- if (state->info->port.blocked_open) {
+ if (state->info.port.blocked_open) {
if (state->close_delay)
msleep_interruptible(state->close_delay);
} else if (!uart_console(port)) {
@@ -1334,8 +1335,8 @@
/*
* Wake up anyone trying to open this port.
*/
- state->info->flags &= ~UIF_NORMAL_ACTIVE;
- wake_up_interruptible(&state->info->port.open_wait);
+ state->info.flags &= ~UIF_NORMAL_ACTIVE;
+ wake_up_interruptible(&state->info.port.open_wait);
done:
mutex_unlock(&state->mutex);
@@ -1409,19 +1410,20 @@
static void uart_hangup(struct tty_struct *tty)
{
struct uart_state *state = tty->driver_data;
+ struct uart_info *info = &state->info;
BUG_ON(!kernel_locked());
pr_debug("uart_hangup(%d)\n", state->port->line);
mutex_lock(&state->mutex);
- if (state->info && state->info->flags & UIF_NORMAL_ACTIVE) {
+ if (info->flags & UIF_NORMAL_ACTIVE) {
uart_flush_buffer(tty);
uart_shutdown(state);
state->count = 0;
- state->info->flags &= ~UIF_NORMAL_ACTIVE;
- state->info->port.tty = NULL;
- wake_up_interruptible(&state->info->port.open_wait);
- wake_up_interruptible(&state->info->delta_msr_wait);
+ info->flags &= ~UIF_NORMAL_ACTIVE;
+ info->port.tty = NULL;
+ wake_up_interruptible(&info->port.open_wait);
+ wake_up_interruptible(&info->delta_msr_wait);
}
mutex_unlock(&state->mutex);
}
@@ -1434,7 +1436,7 @@
*/
static void uart_update_termios(struct uart_state *state)
{
- struct tty_struct *tty = state->info->port.tty;
+ struct tty_struct *tty = state->info.port.tty;
struct uart_port *port = state->port;
if (uart_console(port) && port->cons->cflag) {
@@ -1469,7 +1471,7 @@
uart_block_til_ready(struct file *filp, struct uart_state *state)
{
DECLARE_WAITQUEUE(wait, current);
- struct uart_info *info = state->info;
+ struct uart_info *info = &state->info;
struct uart_port *port = state->port;
unsigned int mctrl;
@@ -1563,28 +1565,6 @@
ret = -ENXIO;
goto err_unlock;
}
-
- /* BKL: RACE HERE - LEAK */
- /* We should move this into the uart_state structure and kill off
- this whole complexity */
- if (!state->info) {
- state->info = kzalloc(sizeof(struct uart_info), GFP_KERNEL);
- if (state->info) {
- init_waitqueue_head(&state->info->port.open_wait);
- init_waitqueue_head(&state->info->delta_msr_wait);
-
- /*
- * Link the info into the other structures.
- */
- state->port->info = state->info;
-
- tasklet_init(&state->info->tlet, uart_tasklet_action,
- (unsigned long)state);
- } else {
- ret = -ENOMEM;
- goto err_unlock;
- }
- }
return state;
err_unlock:
@@ -1641,9 +1621,10 @@
* Any failures from here onwards should not touch the count.
*/
tty->driver_data = state;
+ state->port->info = &state->info;
tty->low_latency = (state->port->flags & UPF_LOW_LATENCY) ? 1 : 0;
tty->alt_speed = 0;
- state->info->port.tty = tty;
+ state->info.port.tty = tty;
/*
* If the port is in the middle of closing, bail out now.
@@ -1676,8 +1657,8 @@
/*
* If this is the first open to succeed, adjust things to suit.
*/
- if (retval == 0 && !(state->info->flags & UIF_NORMAL_ACTIVE)) {
- state->info->flags |= UIF_NORMAL_ACTIVE;
+ if (retval == 0 && !(state->info.flags & UIF_NORMAL_ACTIVE)) {
+ state->info.flags |= UIF_NORMAL_ACTIVE;
uart_update_termios(state);
}
@@ -2028,11 +2009,11 @@
}
port->suspended = 1;
- if (state->info && state->info->flags & UIF_INITIALIZED) {
+ if (state->info.flags & UIF_INITIALIZED) {
const struct uart_ops *ops = port->ops;
int tries;
- state->info->flags = (state->info->flags & ~UIF_INITIALIZED)
+ state->info.flags = (state->info.flags & ~UIF_INITIALIZED)
| UIF_SUSPENDED;
spin_lock_irq(&port->lock);
@@ -2107,15 +2088,15 @@
/*
* If that's unset, use the tty termios setting.
*/
- if (state->info && state->info->port.tty && termios.c_cflag == 0)
- termios = *state->info->port.tty->termios;
+ if (state->info.port.tty && termios.c_cflag == 0)
+ termios = *state->info.port.tty->termios;
uart_change_pm(state, 0);
port->ops->set_termios(port, &termios, NULL);
console_start(port->cons);
}
- if (state->info && state->info->flags & UIF_SUSPENDED) {
+ if (state->info.flags & UIF_SUSPENDED) {
const struct uart_ops *ops = port->ops;
int ret;
@@ -2130,7 +2111,7 @@
ops->set_mctrl(port, port->mctrl);
ops->start_tx(port);
spin_unlock_irq(&port->lock);
- state->info->flags |= UIF_INITIALIZED;
+ state->info.flags |= UIF_INITIALIZED;
} else {
/*
* Failed to resume - maybe hardware went away?
@@ -2140,7 +2121,7 @@
uart_shutdown(state);
}
- state->info->flags &= ~UIF_SUSPENDED;
+ state->info.flags &= ~UIF_SUSPENDED;
}
mutex_unlock(&state->mutex);
@@ -2198,11 +2179,14 @@
* Now do the auto configuration stuff. Note that config_port
* is expected to claim the resources and map the port for us.
*/
- flags = UART_CONFIG_TYPE;
+ flags = 0;
if (port->flags & UPF_AUTO_IRQ)
flags |= UART_CONFIG_IRQ;
if (port->flags & UPF_BOOT_AUTOCONF) {
- port->type = PORT_UNKNOWN;
+ if (!(port->flags & UPF_FIXED_TYPE)) {
+ port->type = PORT_UNKNOWN;
+ flags |= UART_CONFIG_TYPE;
+ }
port->ops->config_port(port, flags);
}
@@ -2383,8 +2367,12 @@
state->close_delay = 500; /* .5 seconds */
state->closing_wait = 30000; /* 30 seconds */
-
mutex_init(&state->mutex);
+
+ tty_port_init(&state->info.port);
+ init_waitqueue_head(&state->info.delta_msr_wait);
+ tasklet_init(&state->info.tlet, uart_tasklet_action,
+ (unsigned long)state);
}
retval = tty_register_driver(normal);
@@ -2455,7 +2443,7 @@
state->pm_state = -1;
port->cons = drv->cons;
- port->info = state->info;
+ port->info = &state->info;
/*
* If this port is a console, then the spinlock is already
@@ -2527,18 +2515,11 @@
*/
tty_unregister_device(drv->tty_driver, port->line);
- info = state->info;
+ info = &state->info;
if (info && info->port.tty)
tty_vhangup(info->port.tty);
/*
- * All users of this port should now be disconnected from
- * this driver, and the port shut down. We should be the
- * only thread fiddling with this port from now on.
- */
- state->info = NULL;
-
- /*
* Free the port IO and memory resources, if any.
*/
if (port->type != PORT_UNKNOWN)
@@ -2552,10 +2533,8 @@
/*
* Kill the tasklet, and free resources.
*/
- if (info) {
+ if (info)
tasklet_kill(&info->tlet);
- kfree(info);
- }
state->port = NULL;
mutex_unlock(&port_mutex);
diff --git a/drivers/usb/host/hwa-hc.c b/drivers/usb/host/hwa-hc.c
index 64be4d8..8582236 100644
--- a/drivers/usb/host/hwa-hc.c
+++ b/drivers/usb/host/hwa-hc.c
@@ -54,7 +54,6 @@
* DWA).
*/
#include <linux/kernel.h>
-#include <linux/version.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/workqueue.h>
@@ -63,16 +62,12 @@
#include "../wusbcore/wa-hc.h"
#include "../wusbcore/wusbhc.h"
-#define D_LOCAL 0
-#include <linux/uwb/debug.h>
-
struct hwahc {
struct wusbhc wusbhc; /* has to be 1st */
struct wahc wa;
- u8 buffer[16]; /* for misc usb transactions */
};
-/**
+/*
* FIXME should be wusbhc
*
* NOTE: we need to cache the Cluster ID because later...there is no
@@ -126,7 +121,6 @@
struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc);
struct device *dev = &hwahc->wa.usb_iface->dev;
- d_fnstart(4, dev, "(hwahc %p)\n", hwahc);
mutex_lock(&wusbhc->mutex);
wa_nep_disarm(&hwahc->wa);
result = __wa_set_feature(&hwahc->wa, WA_RESET);
@@ -134,7 +128,6 @@
dev_err(dev, "error commanding HC to reset: %d\n", result);
goto error_unlock;
}
- d_printf(3, dev, "reset: waiting for device to change state\n");
result = __wa_wait_status(&hwahc->wa, WA_STATUS_RESETTING, 0);
if (result < 0) {
dev_err(dev, "error waiting for HC to reset: %d\n", result);
@@ -142,7 +135,6 @@
}
error_unlock:
mutex_unlock(&wusbhc->mutex);
- d_fnend(4, dev, "(hwahc %p) = %d\n", hwahc, result);
return result;
}
@@ -155,15 +147,9 @@
int result;
struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc);
- struct device *dev = &hwahc->wa.usb_iface->dev;
- /* Set up a Host Info WUSB Information Element */
- d_fnstart(4, dev, "(hwahc %p)\n", hwahc);
result = -ENOSPC;
mutex_lock(&wusbhc->mutex);
- /* Start the numbering from the top so that the bottom
- * range of the unauth addr space is used for devices,
- * the top for HCs; use 0xfe - RC# */
addr = wusb_cluster_id_get();
if (addr == 0)
goto error_cluster_id_get;
@@ -171,22 +157,14 @@
if (result < 0)
goto error_set_cluster_id;
- result = wa_nep_arm(&hwahc->wa, GFP_KERNEL);
- if (result < 0) {
- dev_err(dev, "cannot listen to notifications: %d\n", result);
- goto error_stop;
- }
usb_hcd->uses_new_polling = 1;
usb_hcd->poll_rh = 1;
usb_hcd->state = HC_STATE_RUNNING;
result = 0;
out:
mutex_unlock(&wusbhc->mutex);
- d_fnend(4, dev, "(hwahc %p) = %d\n", hwahc, result);
return result;
-error_stop:
- __wa_stop(&hwahc->wa);
error_set_cluster_id:
wusb_cluster_id_put(wusbhc->cluster_id);
error_cluster_id_get:
@@ -194,39 +172,6 @@
}
-/*
- * FIXME: break this function up
- */
-static int __hwahc_op_wusbhc_start(struct wusbhc *wusbhc)
-{
- int result;
- struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc);
- struct device *dev = &hwahc->wa.usb_iface->dev;
-
- /* Set up a Host Info WUSB Information Element */
- d_fnstart(4, dev, "(hwahc %p)\n", hwahc);
- result = -ENOSPC;
-
- result = __wa_set_feature(&hwahc->wa, WA_ENABLE);
- if (result < 0) {
- dev_err(dev, "error commanding HC to start: %d\n", result);
- goto error_stop;
- }
- result = __wa_wait_status(&hwahc->wa, WA_ENABLE, WA_ENABLE);
- if (result < 0) {
- dev_err(dev, "error waiting for HC to start: %d\n", result);
- goto error_stop;
- }
- result = 0;
-out:
- d_fnend(4, dev, "(hwahc %p) = %d\n", hwahc, result);
- return result;
-
-error_stop:
- result = __wa_clear_feature(&hwahc->wa, WA_ENABLE);
- goto out;
-}
-
static int hwahc_op_suspend(struct usb_hcd *usb_hcd, pm_message_t msg)
{
struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
@@ -246,18 +191,6 @@
return -ENOSYS;
}
-static void __hwahc_op_wusbhc_stop(struct wusbhc *wusbhc)
-{
- int result;
- struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc);
- struct device *dev = &hwahc->wa.usb_iface->dev;
-
- d_fnstart(4, dev, "(hwahc %p)\n", hwahc);
- /* Nothing for now */
- d_fnend(4, dev, "(hwahc %p) = %d\n", hwahc, result);
- return;
-}
-
/*
* No need to abort pipes, as when this is called, all the children
* has been disconnected and that has done it [through
@@ -266,21 +199,11 @@
*/
static void hwahc_op_stop(struct usb_hcd *usb_hcd)
{
- int result;
struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
- struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc);
- struct wahc *wa = &hwahc->wa;
- struct device *dev = &wa->usb_iface->dev;
- d_fnstart(4, dev, "(hwahc %p)\n", hwahc);
mutex_lock(&wusbhc->mutex);
- wusbhc_stop(wusbhc);
- wa_nep_disarm(&hwahc->wa);
- result = __wa_stop(&hwahc->wa);
wusb_cluster_id_put(wusbhc->cluster_id);
mutex_unlock(&wusbhc->mutex);
- d_fnend(4, dev, "(hwahc %p) = %d\n", hwahc, result);
- return;
}
static int hwahc_op_get_frame_number(struct usb_hcd *usb_hcd)
@@ -325,6 +248,54 @@
rpipe_ep_disable(&hwahc->wa, ep);
}
+static int __hwahc_op_wusbhc_start(struct wusbhc *wusbhc)
+{
+ int result;
+ struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc);
+ struct device *dev = &hwahc->wa.usb_iface->dev;
+
+ result = __wa_set_feature(&hwahc->wa, WA_ENABLE);
+ if (result < 0) {
+ dev_err(dev, "error commanding HC to start: %d\n", result);
+ goto error_stop;
+ }
+ result = __wa_wait_status(&hwahc->wa, WA_ENABLE, WA_ENABLE);
+ if (result < 0) {
+ dev_err(dev, "error waiting for HC to start: %d\n", result);
+ goto error_stop;
+ }
+ result = wa_nep_arm(&hwahc->wa, GFP_KERNEL);
+ if (result < 0) {
+ dev_err(dev, "cannot listen to notifications: %d\n", result);
+ goto error_stop;
+ }
+ return result;
+
+error_stop:
+ __wa_clear_feature(&hwahc->wa, WA_ENABLE);
+ return result;
+}
+
+static void __hwahc_op_wusbhc_stop(struct wusbhc *wusbhc, int delay)
+{
+ struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc);
+ struct wahc *wa = &hwahc->wa;
+ u8 iface_no = wa->usb_iface->cur_altsetting->desc.bInterfaceNumber;
+ int ret;
+
+ ret = usb_control_msg(wa->usb_dev, usb_sndctrlpipe(wa->usb_dev, 0),
+ WUSB_REQ_CHAN_STOP,
+ USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
+ delay * 1000,
+ iface_no,
+ NULL, 0, 1000 /* FIXME: arbitrary */);
+ if (ret == 0)
+ msleep(delay);
+
+ wa_nep_disarm(&hwahc->wa);
+ __wa_stop(&hwahc->wa);
+}
+
/*
* Set the UWB MAS allocation for the WUSB cluster
*
@@ -581,11 +552,11 @@
itr_size = le16_to_cpu(usb_dev->actconfig->desc.wTotalLength);
while (itr_size >= sizeof(*hdr)) {
hdr = (struct usb_descriptor_header *) itr;
- d_printf(3, dev, "Extra device descriptor: "
- "type %02x/%u bytes @ %zu (%zu left)\n",
- hdr->bDescriptorType, hdr->bLength,
- (itr - usb_dev->rawdescriptors[actconfig_idx]),
- itr_size);
+ dev_dbg(dev, "Extra device descriptor: "
+ "type %02x/%u bytes @ %zu (%zu left)\n",
+ hdr->bDescriptorType, hdr->bLength,
+ (itr - usb_dev->rawdescriptors[actconfig_idx]),
+ itr_size);
if (hdr->bDescriptorType == USB_DT_WIRE_ADAPTER)
goto found;
itr += hdr->bLength;
@@ -794,7 +765,6 @@
{
struct wusbhc *wusbhc = &hwahc->wusbhc;
- d_fnstart(1, NULL, "(hwahc %p)\n", hwahc);
mutex_lock(&wusbhc->mutex);
__wa_destroy(&hwahc->wa);
wusbhc_destroy(&hwahc->wusbhc);
@@ -804,7 +774,6 @@
usb_put_intf(hwahc->wa.usb_iface);
usb_put_dev(hwahc->wa.usb_dev);
mutex_unlock(&wusbhc->mutex);
- d_fnend(1, NULL, "(hwahc %p) = void\n", hwahc);
}
static void hwahc_init(struct hwahc *hwahc)
@@ -821,7 +790,6 @@
struct hwahc *hwahc;
struct device *dev = &usb_iface->dev;
- d_fnstart(4, dev, "(%p, %p)\n", usb_iface, id);
result = -ENOMEM;
usb_hcd = usb_create_hcd(&hwahc_hc_driver, &usb_iface->dev, "wusb-hwa");
if (usb_hcd == NULL) {
@@ -848,7 +816,6 @@
dev_err(dev, "Cannot setup phase B of WUSBHC: %d\n", result);
goto error_wusbhc_b_create;
}
- d_fnend(4, dev, "(%p, %p) = 0\n", usb_iface, id);
return 0;
error_wusbhc_b_create:
@@ -858,7 +825,6 @@
error_hwahc_create:
usb_put_hcd(usb_hcd);
error_alloc:
- d_fnend(4, dev, "(%p, %p) = %d\n", usb_iface, id, result);
return result;
}
@@ -872,16 +838,12 @@
wusbhc = usb_hcd_to_wusbhc(usb_hcd);
hwahc = container_of(wusbhc, struct hwahc, wusbhc);
- d_fnstart(1, NULL, "(hwahc %p [usb_iface %p])\n", hwahc, usb_iface);
wusbhc_b_destroy(&hwahc->wusbhc);
usb_remove_hcd(usb_hcd);
hwahc_destroy(hwahc);
usb_put_hcd(usb_hcd);
- d_fnend(1, NULL, "(hwahc %p [usb_iface %p]) = void\n", hwahc,
- usb_iface);
}
-/** USB device ID's that we handle */
static struct usb_device_id hwahc_id_table[] = {
/* FIXME: use class labels for this */
{ USB_INTERFACE_INFO(0xe0, 0x02, 0x01), },
@@ -898,18 +860,7 @@
static int __init hwahc_driver_init(void)
{
- int result;
- result = usb_register(&hwahc_driver);
- if (result < 0) {
- printk(KERN_ERR "WA-CDS: Cannot register USB driver: %d\n",
- result);
- goto error_usb_register;
- }
- return 0;
-
-error_usb_register:
- return result;
-
+ return usb_register(&hwahc_driver);
}
module_init(hwahc_driver_init);
diff --git a/drivers/usb/host/whci/Kbuild b/drivers/usb/host/whci/Kbuild
index 26a3871..11e5040 100644
--- a/drivers/usb/host/whci/Kbuild
+++ b/drivers/usb/host/whci/Kbuild
@@ -2,6 +2,7 @@
whci-hcd-y := \
asl.o \
+ debug.o \
hcd.o \
hw.o \
init.o \
diff --git a/drivers/usb/host/whci/asl.c b/drivers/usb/host/whci/asl.c
index 4d7078e..577c0d2 100644
--- a/drivers/usb/host/whci/asl.c
+++ b/drivers/usb/host/whci/asl.c
@@ -19,32 +19,11 @@
#include <linux/dma-mapping.h>
#include <linux/uwb/umc.h>
#include <linux/usb.h>
-#define D_LOCAL 0
-#include <linux/uwb/debug.h>
#include "../../wusbcore/wusbhc.h"
#include "whcd.h"
-#if D_LOCAL >= 4
-static void dump_asl(struct whc *whc, const char *tag)
-{
- struct device *dev = &whc->umc->dev;
- struct whc_qset *qset;
-
- d_printf(4, dev, "ASL %s\n", tag);
-
- list_for_each_entry(qset, &whc->async_list, list_node) {
- dump_qset(qset, dev);
- }
-}
-#else
-static inline void dump_asl(struct whc *whc, const char *tag)
-{
-}
-#endif
-
-
static void qset_get_next_prev(struct whc *whc, struct whc_qset *qset,
struct whc_qset **next, struct whc_qset **prev)
{
@@ -179,11 +158,26 @@
1000, "stop ASL");
}
+/**
+ * asl_update - request an ASL update and wait for the hardware to be synced
+ * @whc: the WHCI HC
+ * @wusbcmd: WUSBCMD value to start the update.
+ *
+ * If the WUSB HC is inactive (i.e., the ASL is stopped) then the
+ * update must be skipped as the hardware may not respond to update
+ * requests.
+ */
void asl_update(struct whc *whc, uint32_t wusbcmd)
{
- whc_write_wusbcmd(whc, wusbcmd, wusbcmd);
- wait_event(whc->async_list_wq,
- (le_readl(whc->base + WUSBCMD) & WUSBCMD_ASYNC_UPDATED) == 0);
+ struct wusbhc *wusbhc = &whc->wusbhc;
+
+ mutex_lock(&wusbhc->mutex);
+ if (wusbhc->active) {
+ whc_write_wusbcmd(whc, wusbcmd, wusbcmd);
+ wait_event(whc->async_list_wq,
+ (le_readl(whc->base + WUSBCMD) & WUSBCMD_ASYNC_UPDATED) == 0);
+ }
+ mutex_unlock(&wusbhc->mutex);
}
/**
@@ -202,8 +196,6 @@
spin_lock_irq(&whc->lock);
- dump_asl(whc, "before processing");
-
/*
* Transerve the software list backwards so new qsets can be
* safely inserted into the ASL without making it non-circular.
@@ -217,8 +209,6 @@
update |= process_qset(whc, qset);
}
- dump_asl(whc, "after processing");
-
spin_unlock_irq(&whc->lock);
if (update) {
diff --git a/drivers/usb/host/whci/debug.c b/drivers/usb/host/whci/debug.c
new file mode 100644
index 0000000..cf2d459
--- /dev/null
+++ b/drivers/usb/host/whci/debug.c
@@ -0,0 +1,189 @@
+/*
+ * Wireless Host Controller (WHC) debug.
+ *
+ * Copyright (C) 2008 Cambridge Silicon Radio Ltd.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <linux/kernel.h>
+#include <linux/debugfs.h>
+#include <linux/seq_file.h>
+
+#include "../../wusbcore/wusbhc.h"
+
+#include "whcd.h"
+
+struct whc_dbg {
+ struct dentry *di_f;
+ struct dentry *asl_f;
+ struct dentry *pzl_f;
+};
+
+void qset_print(struct seq_file *s, struct whc_qset *qset)
+{
+ struct whc_std *std;
+ struct urb *urb = NULL;
+ int i;
+
+ seq_printf(s, "qset %08x\n", (u32)qset->qset_dma);
+ seq_printf(s, " -> %08x\n", (u32)qset->qh.link);
+ seq_printf(s, " info: %08x %08x %08x\n",
+ qset->qh.info1, qset->qh.info2, qset->qh.info3);
+ seq_printf(s, " sts: %04x errs: %d\n", qset->qh.status, qset->qh.err_count);
+ seq_printf(s, " TD: sts: %08x opts: %08x\n",
+ qset->qh.overlay.qtd.status, qset->qh.overlay.qtd.options);
+
+ for (i = 0; i < WHCI_QSET_TD_MAX; i++) {
+ seq_printf(s, " %c%c TD[%d]: sts: %08x opts: %08x ptr: %08x\n",
+ i == qset->td_start ? 'S' : ' ',
+ i == qset->td_end ? 'E' : ' ',
+ i, qset->qtd[i].status, qset->qtd[i].options,
+ (u32)qset->qtd[i].page_list_ptr);
+ }
+ seq_printf(s, " ntds: %d\n", qset->ntds);
+ list_for_each_entry(std, &qset->stds, list_node) {
+ if (urb != std->urb) {
+ urb = std->urb;
+ seq_printf(s, " urb %p transferred: %d bytes\n", urb,
+ urb->actual_length);
+ }
+ if (std->qtd)
+ seq_printf(s, " sTD[%td]: %zu bytes @ %08x\n",
+ std->qtd - &qset->qtd[0],
+ std->len, std->num_pointers ?
+ (u32)(std->pl_virt[0].buf_ptr) : (u32)std->dma_addr);
+ else
+ seq_printf(s, " sTD[-]: %zd bytes @ %08x\n",
+ std->len, std->num_pointers ?
+ (u32)(std->pl_virt[0].buf_ptr) : (u32)std->dma_addr);
+ }
+}
+
+static int di_print(struct seq_file *s, void *p)
+{
+ struct whc *whc = s->private;
+ char buf[72];
+ int d;
+
+ for (d = 0; d < whc->n_devices; d++) {
+ struct di_buf_entry *di = &whc->di_buf[d];
+
+ bitmap_scnprintf(buf, sizeof(buf),
+ (unsigned long *)di->availability_info, UWB_NUM_MAS);
+
+ seq_printf(s, "DI[%d]\n", d);
+ seq_printf(s, " availability: %s\n", buf);
+ seq_printf(s, " %c%c key idx: %d dev addr: %d\n",
+ (di->addr_sec_info & WHC_DI_SECURE) ? 'S' : ' ',
+ (di->addr_sec_info & WHC_DI_DISABLE) ? 'D' : ' ',
+ (di->addr_sec_info & WHC_DI_KEY_IDX_MASK) >> 8,
+ (di->addr_sec_info & WHC_DI_DEV_ADDR_MASK));
+ }
+ return 0;
+}
+
+static int asl_print(struct seq_file *s, void *p)
+{
+ struct whc *whc = s->private;
+ struct whc_qset *qset;
+
+ list_for_each_entry(qset, &whc->async_list, list_node) {
+ qset_print(s, qset);
+ }
+
+ return 0;
+}
+
+static int pzl_print(struct seq_file *s, void *p)
+{
+ struct whc *whc = s->private;
+ struct whc_qset *qset;
+ int period;
+
+ for (period = 0; period < 5; period++) {
+ seq_printf(s, "Period %d\n", period);
+ list_for_each_entry(qset, &whc->periodic_list[period], list_node) {
+ qset_print(s, qset);
+ }
+ }
+ return 0;
+}
+
+static int di_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, di_print, inode->i_private);
+}
+
+static int asl_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, asl_print, inode->i_private);
+}
+
+static int pzl_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, pzl_print, inode->i_private);
+}
+
+static struct file_operations di_fops = {
+ .open = di_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .owner = THIS_MODULE,
+};
+
+static struct file_operations asl_fops = {
+ .open = asl_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .owner = THIS_MODULE,
+};
+
+static struct file_operations pzl_fops = {
+ .open = pzl_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .owner = THIS_MODULE,
+};
+
+void whc_dbg_init(struct whc *whc)
+{
+ if (whc->wusbhc.pal.debugfs_dir == NULL)
+ return;
+
+ whc->dbg = kzalloc(sizeof(struct whc_dbg), GFP_KERNEL);
+ if (whc->dbg == NULL)
+ return;
+
+ whc->dbg->di_f = debugfs_create_file("di", 0444,
+ whc->wusbhc.pal.debugfs_dir, whc,
+ &di_fops);
+ whc->dbg->asl_f = debugfs_create_file("asl", 0444,
+ whc->wusbhc.pal.debugfs_dir, whc,
+ &asl_fops);
+ whc->dbg->pzl_f = debugfs_create_file("pzl", 0444,
+ whc->wusbhc.pal.debugfs_dir, whc,
+ &pzl_fops);
+}
+
+void whc_dbg_clean_up(struct whc *whc)
+{
+ if (whc->dbg) {
+ debugfs_remove(whc->dbg->pzl_f);
+ debugfs_remove(whc->dbg->asl_f);
+ debugfs_remove(whc->dbg->di_f);
+ kfree(whc->dbg);
+ }
+}
diff --git a/drivers/usb/host/whci/hcd.c b/drivers/usb/host/whci/hcd.c
index ef3ad4d..1569afd 100644
--- a/drivers/usb/host/whci/hcd.c
+++ b/drivers/usb/host/whci/hcd.c
@@ -15,7 +15,6 @@
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
-#include <linux/version.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/uwb/umc.h>
@@ -92,8 +91,6 @@
mutex_lock(&wusbhc->mutex);
- wusbhc_stop(wusbhc);
-
/* stop HC */
le_writel(0, whc->base + WUSBINTR);
whc_write_wusbcmd(whc, WUSBCMD_RUN, 0);
@@ -276,6 +273,8 @@
goto error_wusbhc_b_create;
}
+ whc_dbg_init(whc);
+
return 0;
error_wusbhc_b_create:
@@ -299,6 +298,7 @@
struct whc *whc = wusbhc_to_whc(wusbhc);
if (usb_hcd) {
+ whc_dbg_clean_up(whc);
wusbhc_b_destroy(wusbhc);
usb_remove_hcd(usb_hcd);
wusbhc_destroy(wusbhc);
diff --git a/drivers/usb/host/whci/hw.c b/drivers/usb/host/whci/hw.c
index ac86e59..d498e72 100644
--- a/drivers/usb/host/whci/hw.c
+++ b/drivers/usb/host/whci/hw.c
@@ -50,6 +50,7 @@
unsigned long flags;
dma_addr_t dma_addr;
int t;
+ int ret = 0;
mutex_lock(&whc->mutex);
@@ -61,7 +62,8 @@
dev_err(&whc->umc->dev, "generic command timeout (%04x/%04x)\n",
le_readl(whc->base + WUSBGENCMDSTS),
le_readl(whc->base + WUSBGENCMDPARAMS));
- return -ETIMEDOUT;
+ ret = -ETIMEDOUT;
+ goto out;
}
if (addr) {
@@ -80,8 +82,8 @@
whc->base + WUSBGENCMDSTS);
spin_unlock_irqrestore(&whc->lock, flags);
-
+out:
mutex_unlock(&whc->mutex);
- return 0;
+ return ret;
}
diff --git a/drivers/usb/host/whci/int.c b/drivers/usb/host/whci/int.c
index fce0117..6aae700 100644
--- a/drivers/usb/host/whci/int.c
+++ b/drivers/usb/host/whci/int.c
@@ -15,7 +15,6 @@
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
-#include <linux/version.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/uwb/umc.h>
diff --git a/drivers/usb/host/whci/pzl.c b/drivers/usb/host/whci/pzl.c
index 8d62df0..2ae5abf 100644
--- a/drivers/usb/host/whci/pzl.c
+++ b/drivers/usb/host/whci/pzl.c
@@ -19,35 +19,11 @@
#include <linux/dma-mapping.h>
#include <linux/uwb/umc.h>
#include <linux/usb.h>
-#define D_LOCAL 0
-#include <linux/uwb/debug.h>
#include "../../wusbcore/wusbhc.h"
#include "whcd.h"
-#if D_LOCAL >= 4
-static void dump_pzl(struct whc *whc, const char *tag)
-{
- struct device *dev = &whc->umc->dev;
- struct whc_qset *qset;
- int period = 0;
-
- d_printf(4, dev, "PZL %s\n", tag);
-
- for (period = 0; period < 5; period++) {
- d_printf(4, dev, "Period %d\n", period);
- list_for_each_entry(qset, &whc->periodic_list[period], list_node) {
- dump_qset(qset, dev);
- }
- }
-}
-#else
-static inline void dump_pzl(struct whc *whc, const char *tag)
-{
-}
-#endif
-
static void update_pzl_pointers(struct whc *whc, int period, u64 addr)
{
switch (period) {
@@ -195,11 +171,26 @@
1000, "stop PZL");
}
+/**
+ * pzl_update - request a PZL update and wait for the hardware to be synced
+ * @whc: the WHCI HC
+ * @wusbcmd: WUSBCMD value to start the update.
+ *
+ * If the WUSB HC is inactive (i.e., the PZL is stopped) then the
+ * update must be skipped as the hardware may not respond to update
+ * requests.
+ */
void pzl_update(struct whc *whc, uint32_t wusbcmd)
{
- whc_write_wusbcmd(whc, wusbcmd, wusbcmd);
- wait_event(whc->periodic_list_wq,
- (le_readl(whc->base + WUSBCMD) & WUSBCMD_PERIODIC_UPDATED) == 0);
+ struct wusbhc *wusbhc = &whc->wusbhc;
+
+ mutex_lock(&wusbhc->mutex);
+ if (wusbhc->active) {
+ whc_write_wusbcmd(whc, wusbcmd, wusbcmd);
+ wait_event(whc->periodic_list_wq,
+ (le_readl(whc->base + WUSBCMD) & WUSBCMD_PERIODIC_UPDATED) == 0);
+ }
+ mutex_unlock(&wusbhc->mutex);
}
static void update_pzl_hw_view(struct whc *whc)
@@ -235,8 +226,6 @@
spin_lock_irq(&whc->lock);
- dump_pzl(whc, "before processing");
-
for (period = 4; period >= 0; period--) {
list_for_each_entry_safe(qset, t, &whc->periodic_list[period], list_node) {
if (!qset->in_hw_list)
@@ -248,8 +237,6 @@
if (update & (WHC_UPDATE_ADDED | WHC_UPDATE_REMOVED))
update_pzl_hw_view(whc);
- dump_pzl(whc, "after processing");
-
spin_unlock_irq(&whc->lock);
if (update) {
diff --git a/drivers/usb/host/whci/qset.c b/drivers/usb/host/whci/qset.c
index 0420037..7be7431 100644
--- a/drivers/usb/host/whci/qset.c
+++ b/drivers/usb/host/whci/qset.c
@@ -24,46 +24,6 @@
#include "whcd.h"
-void dump_qset(struct whc_qset *qset, struct device *dev)
-{
- struct whc_std *std;
- struct urb *urb = NULL;
- int i;
-
- dev_dbg(dev, "qset %08x\n", (u32)qset->qset_dma);
- dev_dbg(dev, " -> %08x\n", (u32)qset->qh.link);
- dev_dbg(dev, " info: %08x %08x %08x\n",
- qset->qh.info1, qset->qh.info2, qset->qh.info3);
- dev_dbg(dev, " sts: %04x errs: %d\n", qset->qh.status, qset->qh.err_count);
- dev_dbg(dev, " TD: sts: %08x opts: %08x\n",
- qset->qh.overlay.qtd.status, qset->qh.overlay.qtd.options);
-
- for (i = 0; i < WHCI_QSET_TD_MAX; i++) {
- dev_dbg(dev, " %c%c TD[%d]: sts: %08x opts: %08x ptr: %08x\n",
- i == qset->td_start ? 'S' : ' ',
- i == qset->td_end ? 'E' : ' ',
- i, qset->qtd[i].status, qset->qtd[i].options,
- (u32)qset->qtd[i].page_list_ptr);
- }
- dev_dbg(dev, " ntds: %d\n", qset->ntds);
- list_for_each_entry(std, &qset->stds, list_node) {
- if (urb != std->urb) {
- urb = std->urb;
- dev_dbg(dev, " urb %p transferred: %d bytes\n", urb,
- urb->actual_length);
- }
- if (std->qtd)
- dev_dbg(dev, " sTD[%td]: %zu bytes @ %08x\n",
- std->qtd - &qset->qtd[0],
- std->len, std->num_pointers ?
- (u32)(std->pl_virt[0].buf_ptr) : (u32)std->dma_addr);
- else
- dev_dbg(dev, " sTD[-]: %zd bytes @ %08x\n",
- std->len, std->num_pointers ?
- (u32)(std->pl_virt[0].buf_ptr) : (u32)std->dma_addr);
- }
-}
-
struct whc_qset *qset_alloc(struct whc *whc, gfp_t mem_flags)
{
struct whc_qset *qset;
diff --git a/drivers/usb/host/whci/whcd.h b/drivers/usb/host/whci/whcd.h
index 1d2a53b..0f3540f 100644
--- a/drivers/usb/host/whci/whcd.h
+++ b/drivers/usb/host/whci/whcd.h
@@ -21,6 +21,7 @@
#define __WHCD_H
#include <linux/uwb/whci.h>
+#include <linux/uwb/umc.h>
#include <linux/workqueue.h>
#include "whci-hc.h"
@@ -28,6 +29,7 @@
/* Generic command timeout. */
#define WHC_GENCMD_TIMEOUT_MS 100
+struct whc_dbg;
struct whc {
struct wusbhc wusbhc;
@@ -69,6 +71,8 @@
struct list_head periodic_removed_list;
wait_queue_head_t periodic_list_wq;
struct work_struct periodic_work;
+
+ struct whc_dbg *dbg;
};
#define wusbhc_to_whc(w) (container_of((w), struct whc, wusbhc))
@@ -136,7 +140,7 @@
/* wusb.c */
int whc_wusbhc_start(struct wusbhc *wusbhc);
-void whc_wusbhc_stop(struct wusbhc *wusbhc);
+void whc_wusbhc_stop(struct wusbhc *wusbhc, int delay);
int whc_mmcie_add(struct wusbhc *wusbhc, u8 interval, u8 repeat_cnt,
u8 handle, struct wuie_hdr *wuie);
int whc_mmcie_rm(struct wusbhc *wusbhc, u8 handle);
@@ -190,8 +194,11 @@
struct whc_qtd *qtd);
enum whc_update qset_add_qtds(struct whc *whc, struct whc_qset *qset);
void qset_remove_complete(struct whc *whc, struct whc_qset *qset);
-void dump_qset(struct whc_qset *qset, struct device *dev);
void pzl_update(struct whc *whc, uint32_t wusbcmd);
void asl_update(struct whc *whc, uint32_t wusbcmd);
+/* debug.c */
+void whc_dbg_init(struct whc *whc);
+void whc_dbg_clean_up(struct whc *whc);
+
#endif /* #ifndef __WHCD_H */
diff --git a/drivers/usb/host/whci/whci-hc.h b/drivers/usb/host/whci/whci-hc.h
index bff1eb7..51df7e3 100644
--- a/drivers/usb/host/whci/whci-hc.h
+++ b/drivers/usb/host/whci/whci-hc.h
@@ -410,6 +410,8 @@
# define WUSBDNTSCTRL_SLOTS(s) ((s) << 0)
#define WUSBTIME 0x68
+# define WUSBTIME_CHANNEL_TIME_MASK 0x00ffffff
+
#define WUSBBPST 0x6c
#define WUSBDIBUPDATED 0x70
diff --git a/drivers/usb/host/whci/wusb.c b/drivers/usb/host/whci/wusb.c
index 66e4ddc..f24efde 100644
--- a/drivers/usb/host/whci/wusb.c
+++ b/drivers/usb/host/whci/wusb.c
@@ -15,47 +15,19 @@
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
-#include <linux/version.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/uwb/umc.h>
-#define D_LOCAL 1
-#include <linux/uwb/debug.h>
#include "../../wusbcore/wusbhc.h"
#include "whcd.h"
-#if D_LOCAL >= 1
-static void dump_di(struct whc *whc, int idx)
-{
- struct di_buf_entry *di = &whc->di_buf[idx];
- struct device *dev = &whc->umc->dev;
- char buf[128];
-
- bitmap_scnprintf(buf, sizeof(buf), (unsigned long *)di->availability_info, UWB_NUM_MAS);
-
- d_printf(1, dev, "DI[%d]\n", idx);
- d_printf(1, dev, " availability: %s\n", buf);
- d_printf(1, dev, " %c%c key idx: %d dev addr: %d\n",
- (di->addr_sec_info & WHC_DI_SECURE) ? 'S' : ' ',
- (di->addr_sec_info & WHC_DI_DISABLE) ? 'D' : ' ',
- (di->addr_sec_info & WHC_DI_KEY_IDX_MASK) >> 8,
- (di->addr_sec_info & WHC_DI_DEV_ADDR_MASK));
-}
-#else
-static inline void dump_di(struct whc *whc, int idx)
-{
-}
-#endif
-
static int whc_update_di(struct whc *whc, int idx)
{
int offset = idx / 32;
u32 bit = 1 << (idx % 32);
- dump_di(whc, idx);
-
le_writel(bit, whc->base + WUSBDIBUPDATED + offset);
return whci_wait_for(&whc->umc->dev,
@@ -64,8 +36,9 @@
}
/*
- * WHCI starts and stops MMCs based on there being a valid GTK so
- * these need only start/stop the asynchronous and periodic schedules.
+ * WHCI starts MMCs based on there being a valid GTK so these need
+ * only start/stop the asynchronous and periodic schedules and send a
+ * channel stop command.
*/
int whc_wusbhc_start(struct wusbhc *wusbhc)
@@ -78,12 +51,20 @@
return 0;
}
-void whc_wusbhc_stop(struct wusbhc *wusbhc)
+void whc_wusbhc_stop(struct wusbhc *wusbhc, int delay)
{
struct whc *whc = wusbhc_to_whc(wusbhc);
+ u32 stop_time, now_time;
+ int ret;
pzl_stop(whc);
asl_stop(whc);
+
+ now_time = le_readl(whc->base + WUSBTIME) & WUSBTIME_CHANNEL_TIME_MASK;
+ stop_time = (now_time + ((delay * 8) << 7)) & 0x00ffffff;
+ ret = whc_do_gencmd(whc, WUSBGENCMDSTS_CHAN_STOP, stop_time, NULL, 0);
+ if (ret == 0)
+ msleep(delay);
}
int whc_mmcie_add(struct wusbhc *wusbhc, u8 interval, u8 repeat_cnt,
diff --git a/drivers/usb/serial/console.c b/drivers/usb/serial/console.c
index 5b95009..19e2404 100644
--- a/drivers/usb/serial/console.c
+++ b/drivers/usb/serial/console.c
@@ -241,12 +241,25 @@
}
}
+static struct tty_driver *usb_console_device(struct console *co, int *index)
+{
+ struct tty_driver **p = (struct tty_driver **)co->data;
+
+ if (!*p)
+ return NULL;
+
+ *index = co->index;
+ return *p;
+}
+
static struct console usbcons = {
.name = "ttyUSB",
.write = usb_console_write,
+ .device = usb_console_device,
.setup = usb_console_setup,
.flags = CON_PRINTBUFFER,
.index = -1,
+ .data = &usb_serial_tty_driver,
};
void usb_serial_console_disconnect(struct usb_serial *serial)
diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
index fb6f293..ef6cfa5 100644
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -1054,6 +1054,8 @@
if (copy_from_user(&new_serial, newinfo, sizeof(new_serial)))
return -EFAULT;
+
+ lock_kernel();
old_priv = *priv;
/* Do error checking and permission checking */
@@ -1069,8 +1071,10 @@
}
if ((new_serial.baud_base != priv->baud_base) &&
- (new_serial.baud_base < 9600))
+ (new_serial.baud_base < 9600)) {
+ unlock_kernel();
return -EINVAL;
+ }
/* Make the changes - these are privileged changes! */
@@ -1098,8 +1102,11 @@
(priv->flags & ASYNC_SPD_MASK)) ||
(((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST) &&
(old_priv.custom_divisor != priv->custom_divisor))) {
+ unlock_kernel();
change_speed(tty, port);
}
+ else
+ unlock_kernel();
return 0;
} /* set_serial_info */
diff --git a/drivers/usb/serial/kl5kusb105.c b/drivers/usb/serial/kl5kusb105.c
index dc36a05..fcd9082 100644
--- a/drivers/usb/serial/kl5kusb105.c
+++ b/drivers/usb/serial/kl5kusb105.c
@@ -878,6 +878,7 @@
dbg("%sstate=%d", __func__, break_state);
+ /* LOCKING */
if (break_state)
lcr |= MCT_U232_SET_BREAK;
diff --git a/drivers/usb/serial/mct_u232.c b/drivers/usb/serial/mct_u232.c
index 07710cf..82930a7 100644
--- a/drivers/usb/serial/mct_u232.c
+++ b/drivers/usb/serial/mct_u232.c
@@ -721,10 +721,10 @@
spin_lock_irqsave(&priv->lock, flags);
lcr = priv->last_lcr;
- spin_unlock_irqrestore(&priv->lock, flags);
if (break_state)
lcr |= MCT_U232_SET_BREAK;
+ spin_unlock_irqrestore(&priv->lock, flags);
mct_u232_set_line_ctrl(serial, lcr);
} /* mct_u232_break_ctl */
diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c
index fda4a64..96a8c77 100644
--- a/drivers/usb/serial/mos7840.c
+++ b/drivers/usb/serial/mos7840.c
@@ -1343,6 +1343,7 @@
else
data = mos7840_port->shadowLCR & ~LCR_SET_BREAK;
+ /* FIXME: no locking on shadowLCR anywhere in driver */
mos7840_port->shadowLCR = data;
dbg("mcs7840_break mos7840_port->shadowLCR is %x\n",
mos7840_port->shadowLCR);
@@ -2214,10 +2215,12 @@
break;
}
+ lock_kernel();
mos7840_port->shadowMCR = mcr;
Data = mos7840_port->shadowMCR;
status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data);
+ unlock_kernel();
if (status < 0) {
dbg("setting MODEM_CONTROL_REGISTER Failed\n");
return -1;
diff --git a/drivers/usb/serial/sierra.c b/drivers/usb/serial/sierra.c
index 0f2b672..d9bf9a5 100644
--- a/drivers/usb/serial/sierra.c
+++ b/drivers/usb/serial/sierra.c
@@ -442,7 +442,7 @@
" endpoint %02x.", __func__, status, endpoint);
} else {
if (urb->actual_length) {
- tty = tty_port_tty_get(&port->port);
+ tty = tty_port_tty_get(&port->port);
tty_buffer_request_room(tty, urb->actual_length);
tty_insert_flip_string(tty, data, urb->actual_length);
tty_flip_buffer_push(tty);
diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c
index 794b5ff..080ade2 100644
--- a/drivers/usb/serial/usb-serial.c
+++ b/drivers/usb/serial/usb-serial.c
@@ -269,15 +269,19 @@
return;
}
- --port->port.count;
- if (port->port.count == 0)
+ if (port->port.count == 1)
/* only call the device specific close if this
- * port is being closed by the last owner */
+ * port is being closed by the last owner. Ensure we do
+ * this before we drop the port count. The call is protected
+ * by the port mutex
+ */
port->serial->type->close(tty, port, filp);
- if (port->port.count == (port->console? 1 : 0)) {
+ if (port->port.count == (port->console ? 2 : 1)) {
struct tty_struct *tty = tty_port_tty_get(&port->port);
if (tty) {
+ /* We must do this before we drop the port count to
+ zero. */
if (tty->driver_data)
tty->driver_data = NULL;
tty_port_tty_set(&port->port, NULL);
@@ -285,13 +289,14 @@
}
}
- if (port->port.count == 0) {
+ if (port->port.count == 1) {
mutex_lock(&port->serial->disc_mutex);
if (!port->serial->disconnected)
usb_autopm_put_interface(port->serial->interface);
mutex_unlock(&port->serial->disc_mutex);
module_put(port->serial->type->driver.owner);
}
+ --port->port.count;
mutex_unlock(&port->mutex);
usb_serial_put(port->serial);
@@ -334,6 +339,10 @@
dbg("%s = port %d", __func__, port->number);
WARN_ON(!port->port.count);
+ /* if the device was unplugged then any remaining characters
+ fell out of the connector ;) */
+ if (port->serial->disconnected)
+ return 0;
/* pass on to the driver specific version of this function */
return port->serial->type->chars_in_buffer(tty);
}
@@ -373,9 +382,7 @@
/* pass on to the driver specific version of this function
if it is available */
if (port->serial->type->ioctl) {
- lock_kernel();
retval = port->serial->type->ioctl(tty, file, cmd, arg);
- unlock_kernel();
} else
retval = -ENOIOCTLCMD;
return retval;
@@ -404,11 +411,8 @@
WARN_ON(!port->port.count);
/* pass on to the driver specific version of this function
if it is available */
- if (port->serial->type->break_ctl) {
- lock_kernel();
+ if (port->serial->type->break_ctl)
port->serial->type->break_ctl(tty, break_state);
- unlock_kernel();
- }
return 0;
}
diff --git a/drivers/usb/wusbcore/cbaf.c b/drivers/usb/wusbcore/cbaf.c
index ab4788d..1335cbe 100644
--- a/drivers/usb/wusbcore/cbaf.c
+++ b/drivers/usb/wusbcore/cbaf.c
@@ -88,7 +88,6 @@
*/
#include <linux/module.h>
#include <linux/ctype.h>
-#include <linux/version.h>
#include <linux/usb.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
diff --git a/drivers/usb/wusbcore/crypto.c b/drivers/usb/wusbcore/crypto.c
index c36c438..9ec7fd5 100644
--- a/drivers/usb/wusbcore/crypto.c
+++ b/drivers/usb/wusbcore/crypto.c
@@ -51,9 +51,17 @@
#include <linux/uwb.h>
#include <linux/usb/wusb.h>
#include <linux/scatterlist.h>
-#define D_LOCAL 0
-#include <linux/uwb/debug.h>
+static int debug_crypto_verify = 0;
+
+module_param(debug_crypto_verify, int, 0);
+MODULE_PARM_DESC(debug_crypto_verify, "verify the key generation algorithms");
+
+static void wusb_key_dump(const void *buf, size_t len)
+{
+ print_hex_dump(KERN_ERR, " ", DUMP_PREFIX_OFFSET, 16, 1,
+ buf, len, 0);
+}
/*
* Block of data, as understood by AES-CCM
@@ -203,9 +211,6 @@
const u8 bzero[16] = { 0 };
size_t zero_padding;
- d_fnstart(3, NULL, "(tfm_cbc %p, tfm_aes %p, mic %p, "
- "n %p, a %p, b %p, blen %zu)\n",
- tfm_cbc, tfm_aes, mic, n, a, b, blen);
/*
* These checks should be compile time optimized out
* ensure @a fills b1's mac_header and following fields
@@ -247,16 +252,6 @@
b1.la = cpu_to_be16(blen + 14);
memcpy(&b1.mac_header, a, sizeof(*a));
- d_printf(4, NULL, "I: B0 (%zu bytes)\n", sizeof(b0));
- d_dump(4, NULL, &b0, sizeof(b0));
- d_printf(4, NULL, "I: B1 (%zu bytes)\n", sizeof(b1));
- d_dump(4, NULL, &b1, sizeof(b1));
- d_printf(4, NULL, "I: B (%zu bytes)\n", blen);
- d_dump(4, NULL, b, blen);
- d_printf(4, NULL, "I: B 0-padding (%zu bytes)\n", zero_padding);
- d_printf(4, NULL, "D: IV before crypto (%zu)\n", ivsize);
- d_dump(4, NULL, iv, ivsize);
-
sg_init_table(sg, ARRAY_SIZE(sg));
sg_set_buf(&sg[0], &b0, sizeof(b0));
sg_set_buf(&sg[1], &b1, sizeof(b1));
@@ -273,8 +268,6 @@
result);
goto error_cbc_crypt;
}
- d_printf(4, NULL, "D: MIC tag\n");
- d_dump(4, NULL, iv, ivsize);
/* Now we crypt the MIC Tag (*iv) with Ax -- values per WUSB1.0[6.5]
* The procedure is to AES crypt the A0 block and XOR the MIC
@@ -289,17 +282,10 @@
ax.counter = 0;
crypto_cipher_encrypt_one(tfm_aes, (void *)&ax, (void *)&ax);
bytewise_xor(mic, &ax, iv, 8);
- d_printf(4, NULL, "D: CTR[MIC]\n");
- d_dump(4, NULL, &ax, 8);
- d_printf(4, NULL, "D: CCM-MIC tag\n");
- d_dump(4, NULL, mic, 8);
result = 8;
error_cbc_crypt:
kfree(dst_buf);
error_dst_buf:
- d_fnend(3, NULL, "(tfm_cbc %p, tfm_aes %p, mic %p, "
- "n %p, a %p, b %p, blen %zu)\n",
- tfm_cbc, tfm_aes, mic, n, a, b, blen);
return result;
}
@@ -321,10 +307,6 @@
u64 sfn = 0;
__le64 sfn_le;
- d_fnstart(3, NULL, "(out %p, out_size %zu, key %p, _n %p, "
- "a %p, b %p, blen %zu, len %zu)\n", out, out_size,
- key, _n, a, b, blen, len);
-
tfm_cbc = crypto_alloc_blkcipher("cbc(aes)", 0, CRYPTO_ALG_ASYNC);
if (IS_ERR(tfm_cbc)) {
result = PTR_ERR(tfm_cbc);
@@ -366,9 +348,6 @@
error_setkey_cbc:
crypto_free_blkcipher(tfm_cbc);
error_alloc_cbc:
- d_fnend(3, NULL, "(out %p, out_size %zu, key %p, _n %p, "
- "a %p, b %p, blen %zu, len %zu) = %d\n", out, out_size,
- key, _n, a, b, blen, len, (int)bytes);
return result;
}
@@ -422,14 +401,14 @@
"mismatch between MIC result and WUSB1.0[A2]\n");
hs_size = sizeof(stv_hsmic_hs) - sizeof(stv_hsmic_hs.MIC);
printk(KERN_ERR "E: Handshake2 in: (%zu bytes)\n", hs_size);
- dump_bytes(NULL, &stv_hsmic_hs, hs_size);
+ wusb_key_dump(&stv_hsmic_hs, hs_size);
printk(KERN_ERR "E: CCM Nonce in: (%zu bytes)\n",
sizeof(stv_hsmic_n));
- dump_bytes(NULL, &stv_hsmic_n, sizeof(stv_hsmic_n));
+ wusb_key_dump(&stv_hsmic_n, sizeof(stv_hsmic_n));
printk(KERN_ERR "E: MIC out:\n");
- dump_bytes(NULL, mic, sizeof(mic));
+ wusb_key_dump(mic, sizeof(mic));
printk(KERN_ERR "E: MIC out (from WUSB1.0[A.2]):\n");
- dump_bytes(NULL, stv_hsmic_hs.MIC, sizeof(stv_hsmic_hs.MIC));
+ wusb_key_dump(stv_hsmic_hs.MIC, sizeof(stv_hsmic_hs.MIC));
result = -EINVAL;
} else
result = 0;
@@ -497,19 +476,16 @@
printk(KERN_ERR "E: WUSB key derivation test: "
"mismatch between key derivation result "
"and WUSB1.0[A1] Errata 2006/12\n");
- printk(KERN_ERR "E: keydvt in: key (%zu bytes)\n",
- sizeof(stv_key_a1));
- dump_bytes(NULL, stv_key_a1, sizeof(stv_key_a1));
- printk(KERN_ERR "E: keydvt in: nonce (%zu bytes)\n",
- sizeof(stv_keydvt_n_a1));
- dump_bytes(NULL, &stv_keydvt_n_a1, sizeof(stv_keydvt_n_a1));
- printk(KERN_ERR "E: keydvt in: hnonce & dnonce (%zu bytes)\n",
- sizeof(stv_keydvt_in_a1));
- dump_bytes(NULL, &stv_keydvt_in_a1, sizeof(stv_keydvt_in_a1));
+ printk(KERN_ERR "E: keydvt in: key\n");
+ wusb_key_dump(stv_key_a1, sizeof(stv_key_a1));
+ printk(KERN_ERR "E: keydvt in: nonce\n");
+ wusb_key_dump( &stv_keydvt_n_a1, sizeof(stv_keydvt_n_a1));
+ printk(KERN_ERR "E: keydvt in: hnonce & dnonce\n");
+ wusb_key_dump(&stv_keydvt_in_a1, sizeof(stv_keydvt_in_a1));
printk(KERN_ERR "E: keydvt out: KCK\n");
- dump_bytes(NULL, &keydvt_out.kck, sizeof(keydvt_out.kck));
+ wusb_key_dump(&keydvt_out.kck, sizeof(keydvt_out.kck));
printk(KERN_ERR "E: keydvt out: PTK\n");
- dump_bytes(NULL, &keydvt_out.ptk, sizeof(keydvt_out.ptk));
+ wusb_key_dump(&keydvt_out.ptk, sizeof(keydvt_out.ptk));
result = -EINVAL;
} else
result = 0;
@@ -526,10 +502,13 @@
{
int result;
- result = wusb_key_derive_verify();
- if (result < 0)
- return result;
- return wusb_oob_mic_verify();
+ if (debug_crypto_verify) {
+ result = wusb_key_derive_verify();
+ if (result < 0)
+ return result;
+ return wusb_oob_mic_verify();
+ }
+ return 0;
}
void wusb_crypto_exit(void)
diff --git a/drivers/usb/wusbcore/dev-sysfs.c b/drivers/usb/wusbcore/dev-sysfs.c
index 7897a19..1018345 100644
--- a/drivers/usb/wusbcore/dev-sysfs.c
+++ b/drivers/usb/wusbcore/dev-sysfs.c
@@ -28,10 +28,6 @@
#include <linux/workqueue.h>
#include "wusbhc.h"
-#undef D_LOCAL
-#define D_LOCAL 4
-#include <linux/uwb/debug.h>
-
static ssize_t wusb_disconnect_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t size)
diff --git a/drivers/usb/wusbcore/devconnect.c b/drivers/usb/wusbcore/devconnect.c
index f45d777..e2e7e4b 100644
--- a/drivers/usb/wusbcore/devconnect.c
+++ b/drivers/usb/wusbcore/devconnect.c
@@ -57,9 +57,6 @@
* Called by notif.c:wusb_handle_dn_connect()
* when a DN_Connect is received.
*
- * wusbhc_devconnect_auth() Called by rh.c:wusbhc_rh_port_reset() when
- * doing the device connect sequence.
- *
* wusb_devconnect_acked() Ack done, release resources.
*
* wusb_handle_dn_alive() Called by notif.c:wusb_handle_dn()
@@ -69,9 +66,6 @@
* process a disconenct request from a
* device.
*
- * wusb_dev_reset() Called by rh.c:wusbhc_rh_port_reset() when
- * resetting a device.
- *
* __wusb_dev_disable() Called by rh.c:wusbhc_rh_clear_port_feat() when
* disabling a port.
*
@@ -97,10 +91,6 @@
#include <linux/workqueue.h>
#include "wusbhc.h"
-#undef D_LOCAL
-#define D_LOCAL 1
-#include <linux/uwb/debug.h>
-
static void wusbhc_devconnect_acked_work(struct work_struct *work);
static void wusb_dev_free(struct wusb_dev *wusb_dev)
@@ -240,6 +230,7 @@
list_add_tail(&wusb_dev->cack_node, &wusbhc->cack_list);
wusbhc->cack_count++;
wusbhc_fill_cack_ie(wusbhc);
+
return wusb_dev;
}
@@ -250,12 +241,9 @@
*/
static void wusbhc_cack_rm(struct wusbhc *wusbhc, struct wusb_dev *wusb_dev)
{
- struct device *dev = wusbhc->dev;
- d_fnstart(3, dev, "(wusbhc %p wusb_dev %p)\n", wusbhc, wusb_dev);
list_del_init(&wusb_dev->cack_node);
wusbhc->cack_count--;
wusbhc_fill_cack_ie(wusbhc);
- d_fnend(3, dev, "(wusbhc %p wusb_dev %p) = void\n", wusbhc, wusb_dev);
}
/*
@@ -263,14 +251,11 @@
static
void wusbhc_devconnect_acked(struct wusbhc *wusbhc, struct wusb_dev *wusb_dev)
{
- struct device *dev = wusbhc->dev;
- d_fnstart(3, dev, "(wusbhc %p wusb_dev %p)\n", wusbhc, wusb_dev);
wusbhc_cack_rm(wusbhc, wusb_dev);
if (wusbhc->cack_count)
wusbhc_mmcie_set(wusbhc, 0, 0, &wusbhc->cack_ie.hdr);
else
wusbhc_mmcie_rm(wusbhc, &wusbhc->cack_ie.hdr);
- d_fnend(3, dev, "(wusbhc %p wusb_dev %p) = void\n", wusbhc, wusb_dev);
}
static void wusbhc_devconnect_acked_work(struct work_struct *work)
@@ -320,7 +305,6 @@
struct wusb_port *port;
unsigned idx, devnum;
- d_fnstart(3, dev, "(%p, %p, %s)\n", wusbhc, dnc, pr_cdid);
mutex_lock(&wusbhc->mutex);
/* Check we are not handling it already */
@@ -366,16 +350,13 @@
port->wusb_dev = wusb_dev;
port->status |= USB_PORT_STAT_CONNECTION;
port->change |= USB_PORT_STAT_C_CONNECTION;
- port->reset_count = 0;
/* Now the port status changed to connected; khubd will
* pick the change up and try to reset the port to bring it to
* the enabled state--so this process returns up to the stack
- * and it calls back into wusbhc_rh_port_reset() who will call
- * devconnect_auth().
+ * and it calls back into wusbhc_rh_port_reset().
*/
error_unlock:
mutex_unlock(&wusbhc->mutex);
- d_fnend(3, dev, "(%p, %p, %s) = void\n", wusbhc, dnc, pr_cdid);
return;
}
@@ -398,10 +379,8 @@
static void __wusbhc_dev_disconnect(struct wusbhc *wusbhc,
struct wusb_port *port)
{
- struct device *dev = wusbhc->dev;
struct wusb_dev *wusb_dev = port->wusb_dev;
- d_fnstart(3, dev, "(wusbhc %p, port %p)\n", wusbhc, port);
port->status &= ~(USB_PORT_STAT_CONNECTION | USB_PORT_STAT_ENABLE
| USB_PORT_STAT_SUSPEND | USB_PORT_STAT_RESET
| USB_PORT_STAT_LOW_SPEED | USB_PORT_STAT_HIGH_SPEED);
@@ -413,15 +392,11 @@
wusb_dev_put(wusb_dev);
}
port->wusb_dev = NULL;
- /* don't reset the reset_count to zero or wusbhc_rh_port_reset will get
- * confused! We only reset to zero when we connect a new device.
- */
/* After a device disconnects, change the GTK (see [WUSB]
* section 6.2.11.2). */
wusbhc_gtk_rekey(wusbhc);
- d_fnend(3, dev, "(wusbhc %p, port %p) = void\n", wusbhc, port);
/* The Wireless USB part has forgotten about the device already; now
* khubd's timer will pick up the disconnection and remove the USB
* device from the system
@@ -429,39 +404,6 @@
}
/*
- * Authenticate a device into the WUSB Cluster
- *
- * Called from the Root Hub code (rh.c:wusbhc_rh_port_reset()) when
- * asking for a reset on a port that is not enabled (ie: first connect
- * on the port).
- *
- * Performs the 4way handshake to allow the device to comunicate w/ the
- * WUSB Cluster securely; once done, issue a request to the device for
- * it to change to address 0.
- *
- * This mimics the reset step of Wired USB that once resetting a
- * device, leaves the port in enabled state and the dev with the
- * default address (0).
- *
- * WUSB1.0[7.1.2]
- *
- * @port_idx: port where the change happened--This is the index into
- * the wusbhc port array, not the USB port number.
- */
-int wusbhc_devconnect_auth(struct wusbhc *wusbhc, u8 port_idx)
-{
- struct device *dev = wusbhc->dev;
- struct wusb_port *port = wusb_port_by_idx(wusbhc, port_idx);
-
- d_fnstart(3, dev, "(%p, %u)\n", wusbhc, port_idx);
- port->status &= ~USB_PORT_STAT_RESET;
- port->status |= USB_PORT_STAT_ENABLE;
- port->change |= USB_PORT_STAT_C_RESET | USB_PORT_STAT_C_ENABLE;
- d_fnend(3, dev, "(%p, %u) = 0\n", wusbhc, port_idx);
- return 0;
-}
-
-/*
* Refresh the list of keep alives to emit in the MMC
*
* Some devices don't respond to keep alives unless they've been
@@ -528,21 +470,15 @@
*/
static void wusbhc_keep_alive_run(struct work_struct *ws)
{
- struct delayed_work *dw =
- container_of(ws, struct delayed_work, work);
- struct wusbhc *wusbhc =
- container_of(dw, struct wusbhc, keep_alive_timer);
+ struct delayed_work *dw = container_of(ws, struct delayed_work, work);
+ struct wusbhc *wusbhc = container_of(dw, struct wusbhc, keep_alive_timer);
- d_fnstart(5, wusbhc->dev, "(wusbhc %p)\n", wusbhc);
- if (wusbhc->active) {
- mutex_lock(&wusbhc->mutex);
- __wusbhc_keep_alive(wusbhc);
- mutex_unlock(&wusbhc->mutex);
- queue_delayed_work(wusbd, &wusbhc->keep_alive_timer,
- (wusbhc->trust_timeout * CONFIG_HZ)/1000/2);
- }
- d_fnend(5, wusbhc->dev, "(wusbhc %p) = void\n", wusbhc);
- return;
+ mutex_lock(&wusbhc->mutex);
+ __wusbhc_keep_alive(wusbhc);
+ mutex_unlock(&wusbhc->mutex);
+
+ queue_delayed_work(wusbd, &wusbhc->keep_alive_timer,
+ msecs_to_jiffies(wusbhc->trust_timeout / 2));
}
/*
@@ -585,10 +521,6 @@
*/
static void wusbhc_handle_dn_alive(struct wusbhc *wusbhc, struct wusb_dev *wusb_dev)
{
- struct device *dev = wusbhc->dev;
-
- d_printf(2, dev, "DN ALIVE: device 0x%02x pong\n", wusb_dev->addr);
-
mutex_lock(&wusbhc->mutex);
wusb_dev->entry_ts = jiffies;
__wusbhc_keep_alive(wusbhc);
@@ -621,11 +553,10 @@
"no-beacon"
};
- d_fnstart(3, dev, "(%p, %p, %zu)\n", wusbhc, dn_hdr, size);
if (size < sizeof(*dnc)) {
dev_err(dev, "DN CONNECT: short notification (%zu < %zu)\n",
size, sizeof(*dnc));
- goto out;
+ return;
}
dnc = container_of(dn_hdr, struct wusb_dn_connect, hdr);
@@ -637,10 +568,6 @@
wusb_dn_connect_new_connection(dnc) ? "connect" : "reconnect");
/* ACK the connect */
wusbhc_devconnect_ack(wusbhc, dnc, pr_cdid);
-out:
- d_fnend(3, dev, "(%p, %p, %zu) = void\n",
- wusbhc, dn_hdr, size);
- return;
}
/*
@@ -662,60 +589,6 @@
}
/*
- * Reset a WUSB device on a HWA
- *
- * @wusbhc
- * @port_idx Index of the port where the device is
- *
- * In Wireless USB, a reset is more or less equivalent to a full
- * disconnect; so we just do a full disconnect and send the device a
- * Device Reset IE (WUSB1.0[7.5.11]) giving it a few millisecs (6 MMCs).
- *
- * @wusbhc should be refcounted and unlocked
- */
-int wusbhc_dev_reset(struct wusbhc *wusbhc, u8 port_idx)
-{
- int result;
- struct device *dev = wusbhc->dev;
- struct wusb_dev *wusb_dev;
- struct wuie_reset *ie;
-
- d_fnstart(3, dev, "(%p, %u)\n", wusbhc, port_idx);
- mutex_lock(&wusbhc->mutex);
- result = 0;
- wusb_dev = wusb_port_by_idx(wusbhc, port_idx)->wusb_dev;
- if (wusb_dev == NULL) {
- /* reset no device? ignore */
- dev_dbg(dev, "RESET: no device at port %u, ignoring\n",
- port_idx);
- goto error_unlock;
- }
- result = -ENOMEM;
- ie = kzalloc(sizeof(*ie), GFP_KERNEL);
- if (ie == NULL)
- goto error_unlock;
- ie->hdr.bLength = sizeof(ie->hdr) + sizeof(ie->CDID);
- ie->hdr.bIEIdentifier = WUIE_ID_RESET_DEVICE;
- ie->CDID = wusb_dev->cdid;
- result = wusbhc_mmcie_set(wusbhc, 0xff, 6, &ie->hdr);
- if (result < 0) {
- dev_err(dev, "RESET: cant's set MMC: %d\n", result);
- goto error_kfree;
- }
- __wusbhc_dev_disconnect(wusbhc, wusb_port_by_idx(wusbhc, port_idx));
-
- /* 120ms, hopefully 6 MMCs (FIXME) */
- msleep(120);
- wusbhc_mmcie_rm(wusbhc, &ie->hdr);
-error_kfree:
- kfree(ie);
-error_unlock:
- mutex_unlock(&wusbhc->mutex);
- d_fnend(3, dev, "(%p, %u) = %d\n", wusbhc, port_idx, result);
- return result;
-}
-
-/*
* Handle a Device Notification coming a host
*
* The Device Notification comes from a host (HWA, DWA or WHCI)
@@ -735,19 +608,17 @@
struct device *dev = wusbhc->dev;
struct wusb_dev *wusb_dev;
- d_fnstart(3, dev, "(%p, %p)\n", wusbhc, dn_hdr);
-
if (size < sizeof(struct wusb_dn_hdr)) {
dev_err(dev, "DN data shorter than DN header (%d < %d)\n",
(int)size, (int)sizeof(struct wusb_dn_hdr));
- goto out;
+ return;
}
wusb_dev = wusbhc_find_dev_by_addr(wusbhc, srcaddr);
if (wusb_dev == NULL && dn_hdr->bType != WUSB_DN_CONNECT) {
dev_dbg(dev, "ignoring DN %d from unconnected device %02x\n",
dn_hdr->bType, srcaddr);
- goto out;
+ return;
}
switch (dn_hdr->bType) {
@@ -772,9 +643,6 @@
dev_warn(dev, "unknown DN %u (%d octets) from %u\n",
dn_hdr->bType, (int)size, srcaddr);
}
-out:
- d_fnend(3, dev, "(%p, %p) = void\n", wusbhc, dn_hdr);
- return;
}
EXPORT_SYMBOL_GPL(wusbhc_handle_dn);
@@ -804,59 +672,30 @@
struct wusb_dev *wusb_dev;
struct wuie_disconnect *ie;
- d_fnstart(3, dev, "(%p, %u)\n", wusbhc, port_idx);
- result = 0;
wusb_dev = wusb_port_by_idx(wusbhc, port_idx)->wusb_dev;
if (wusb_dev == NULL) {
/* reset no device? ignore */
dev_dbg(dev, "DISCONNECT: no device at port %u, ignoring\n",
port_idx);
- goto error;
+ return;
}
__wusbhc_dev_disconnect(wusbhc, wusb_port_by_idx(wusbhc, port_idx));
- result = -ENOMEM;
ie = kzalloc(sizeof(*ie), GFP_KERNEL);
if (ie == NULL)
- goto error;
+ return;
ie->hdr.bLength = sizeof(*ie);
ie->hdr.bIEIdentifier = WUIE_ID_DEVICE_DISCONNECT;
ie->bDeviceAddress = wusb_dev->addr;
result = wusbhc_mmcie_set(wusbhc, 0, 0, &ie->hdr);
- if (result < 0) {
+ if (result < 0)
dev_err(dev, "DISCONNECT: can't set MMC: %d\n", result);
- goto error_kfree;
+ else {
+ /* At least 6 MMCs, assuming at least 1 MMC per zone. */
+ msleep(7*4);
+ wusbhc_mmcie_rm(wusbhc, &ie->hdr);
}
-
- /* 120ms, hopefully 6 MMCs */
- msleep(100);
- wusbhc_mmcie_rm(wusbhc, &ie->hdr);
-error_kfree:
kfree(ie);
-error:
- d_fnend(3, dev, "(%p, %u) = %d\n", wusbhc, port_idx, result);
- return;
-}
-
-static void wusb_cap_descr_printf(const unsigned level, struct device *dev,
- const struct usb_wireless_cap_descriptor *wcd)
-{
- d_printf(level, dev,
- "WUSB Capability Descriptor\n"
- " bDevCapabilityType 0x%02x\n"
- " bmAttributes 0x%02x\n"
- " wPhyRates 0x%04x\n"
- " bmTFITXPowerInfo 0x%02x\n"
- " bmFFITXPowerInfo 0x%02x\n"
- " bmBandGroup 0x%04x\n"
- " bReserved 0x%02x\n",
- wcd->bDevCapabilityType,
- wcd->bmAttributes,
- le16_to_cpu(wcd->wPHYRates),
- wcd->bmTFITXPowerInfo,
- wcd->bmFFITXPowerInfo,
- wcd->bmBandGroup,
- wcd->bReserved);
}
/*
@@ -899,8 +738,6 @@
}
cap_size = cap_hdr->bLength;
cap_type = cap_hdr->bDevCapabilityType;
- d_printf(4, dev, "BOS Capability: 0x%02x (%zu bytes)\n",
- cap_type, cap_size);
if (cap_size == 0)
break;
if (cap_size > top - itr) {
@@ -912,7 +749,6 @@
result = -EBADF;
goto error_bad_cap;
}
- d_dump(3, dev, itr, cap_size);
switch (cap_type) {
case USB_CAP_TYPE_WIRELESS_USB:
if (cap_size != sizeof(*wusb_dev->wusb_cap_descr))
@@ -920,10 +756,8 @@
"descriptor is %zu bytes vs %zu "
"needed\n", cap_size,
sizeof(*wusb_dev->wusb_cap_descr));
- else {
+ else
wusb_dev->wusb_cap_descr = itr;
- wusb_cap_descr_printf(3, dev, itr);
- }
break;
default:
dev_err(dev, "BUG? Unknown BOS capability 0x%02x "
@@ -988,9 +822,7 @@
"%zu bytes): %zd\n", desc_size, result);
goto error_get_descriptor;
}
- d_printf(2, dev, "Got BOS descriptor %zd bytes, %u capabilities\n",
- result, bos->bNumDeviceCaps);
- d_dump(2, dev, bos, result);
+
result = wusb_dev_bos_grok(usb_dev, wusb_dev, bos, result);
if (result < 0)
goto error_bad_bos;
@@ -1056,8 +888,6 @@
if (usb_dev->wusb == 0 || usb_dev->devnum == 1)
return; /* skip non wusb and wusb RHs */
- d_fnstart(3, dev, "(usb_dev %p)\n", usb_dev);
-
wusbhc = wusbhc_get_by_usb_dev(usb_dev);
if (wusbhc == NULL)
goto error_nodev;
@@ -1087,7 +917,6 @@
wusb_dev_put(wusb_dev);
wusbhc_put(wusbhc);
error_nodev:
- d_fnend(3, dev, "(usb_dev %p) = void\n", usb_dev);
return;
wusb_dev_sysfs_rm(wusb_dev);
@@ -1174,11 +1003,10 @@
void wusb_dev_destroy(struct kref *_wusb_dev)
{
- struct wusb_dev *wusb_dev
- = container_of(_wusb_dev, struct wusb_dev, refcnt);
+ struct wusb_dev *wusb_dev = container_of(_wusb_dev, struct wusb_dev, refcnt);
+
list_del_init(&wusb_dev->cack_node);
wusb_dev_free(wusb_dev);
- d_fnend(1, NULL, "%s (wusb_dev %p) = void\n", __func__, wusb_dev);
}
EXPORT_SYMBOL_GPL(wusb_dev_destroy);
@@ -1190,8 +1018,6 @@
*/
int wusbhc_devconnect_create(struct wusbhc *wusbhc)
{
- d_fnstart(3, wusbhc->dev, "(wusbhc %p)\n", wusbhc);
-
wusbhc->keep_alive_ie.hdr.bIEIdentifier = WUIE_ID_KEEP_ALIVE;
wusbhc->keep_alive_ie.hdr.bLength = sizeof(wusbhc->keep_alive_ie.hdr);
INIT_DELAYED_WORK(&wusbhc->keep_alive_timer, wusbhc_keep_alive_run);
@@ -1200,7 +1026,6 @@
wusbhc->cack_ie.hdr.bLength = sizeof(wusbhc->cack_ie.hdr);
INIT_LIST_HEAD(&wusbhc->cack_list);
- d_fnend(3, wusbhc->dev, "(wusbhc %p) = void\n", wusbhc);
return 0;
}
@@ -1209,8 +1034,7 @@
*/
void wusbhc_devconnect_destroy(struct wusbhc *wusbhc)
{
- d_fnstart(3, wusbhc->dev, "(wusbhc %p)\n", wusbhc);
- d_fnend(3, wusbhc->dev, "(wusbhc %p) = void\n", wusbhc);
+ /* no op */
}
/*
@@ -1222,8 +1046,7 @@
* FIXME: This also enables the keep alives but this is not necessary
* until there are connected and authenticated devices.
*/
-int wusbhc_devconnect_start(struct wusbhc *wusbhc,
- const struct wusb_ckhdid *chid)
+int wusbhc_devconnect_start(struct wusbhc *wusbhc)
{
struct device *dev = wusbhc->dev;
struct wuie_host_info *hi;
@@ -1236,7 +1059,7 @@
hi->hdr.bLength = sizeof(*hi);
hi->hdr.bIEIdentifier = WUIE_ID_HOST_INFO;
hi->attributes = cpu_to_le16((wusbhc->rsv->stream << 3) | WUIE_HI_CAP_ALL);
- hi->CHID = *chid;
+ hi->CHID = wusbhc->chid;
result = wusbhc_mmcie_set(wusbhc, 0, 0, &hi->hdr);
if (result < 0) {
dev_err(dev, "Cannot add Host Info MMCIE: %d\n", result);
diff --git a/drivers/usb/wusbcore/mmc.c b/drivers/usb/wusbcore/mmc.c
index cfa77a0..3b52161 100644
--- a/drivers/usb/wusbcore/mmc.c
+++ b/drivers/usb/wusbcore/mmc.c
@@ -159,15 +159,35 @@
}
EXPORT_SYMBOL_GPL(wusbhc_mmcie_rm);
+static int wusbhc_mmc_start(struct wusbhc *wusbhc)
+{
+ int ret;
+
+ mutex_lock(&wusbhc->mutex);
+ ret = wusbhc->start(wusbhc);
+ if (ret >= 0)
+ wusbhc->active = 1;
+ mutex_unlock(&wusbhc->mutex);
+
+ return ret;
+}
+
+static void wusbhc_mmc_stop(struct wusbhc *wusbhc)
+{
+ mutex_lock(&wusbhc->mutex);
+ wusbhc->active = 0;
+ wusbhc->stop(wusbhc, WUSB_CHANNEL_STOP_DELAY_MS);
+ mutex_unlock(&wusbhc->mutex);
+}
+
/*
* wusbhc_start - start transmitting MMCs and accepting connections
* @wusbhc: the HC to start
- * @chid: the CHID to use for this host
*
* Establishes a cluster reservation, enables device connections, and
* starts MMCs with appropriate DNTS parameters.
*/
-int wusbhc_start(struct wusbhc *wusbhc, const struct wusb_ckhdid *chid)
+int wusbhc_start(struct wusbhc *wusbhc)
{
int result;
struct device *dev = wusbhc->dev;
@@ -181,7 +201,7 @@
goto error_rsv_establish;
}
- result = wusbhc_devconnect_start(wusbhc, chid);
+ result = wusbhc_devconnect_start(wusbhc);
if (result < 0) {
dev_err(dev, "error enabling device connections: %d\n", result);
goto error_devconnect_start;
@@ -199,12 +219,12 @@
dev_err(dev, "Cannot set DNTS parameters: %d\n", result);
goto error_set_num_dnts;
}
- result = wusbhc->start(wusbhc);
+ result = wusbhc_mmc_start(wusbhc);
if (result < 0) {
dev_err(dev, "error starting wusbch: %d\n", result);
goto error_wusbhc_start;
}
- wusbhc->active = 1;
+
return 0;
error_wusbhc_start:
@@ -219,76 +239,17 @@
}
/*
- * Disconnect all from the WUSB Channel
- *
- * Send a Host Disconnect IE in the MMC, wait, don't send it any more
- */
-static int __wusbhc_host_disconnect_ie(struct wusbhc *wusbhc)
-{
- int result = -ENOMEM;
- struct wuie_host_disconnect *host_disconnect_ie;
- might_sleep();
- host_disconnect_ie = kmalloc(sizeof(*host_disconnect_ie), GFP_KERNEL);
- if (host_disconnect_ie == NULL)
- goto error_alloc;
- host_disconnect_ie->hdr.bLength = sizeof(*host_disconnect_ie);
- host_disconnect_ie->hdr.bIEIdentifier = WUIE_ID_HOST_DISCONNECT;
- result = wusbhc_mmcie_set(wusbhc, 0, 0, &host_disconnect_ie->hdr);
- if (result < 0)
- goto error_mmcie_set;
-
- /* WUSB1.0[8.5.3.1 & 7.5.2] */
- msleep(100);
- wusbhc_mmcie_rm(wusbhc, &host_disconnect_ie->hdr);
-error_mmcie_set:
- kfree(host_disconnect_ie);
-error_alloc:
- return result;
-}
-
-/*
* wusbhc_stop - stop transmitting MMCs
* @wusbhc: the HC to stop
*
- * Send a Host Disconnect IE, wait, remove all the MMCs (stop sending MMCs).
- *
- * If we can't allocate a Host Stop IE, screw it, we don't notify the
- * devices we are disconnecting...
+ * Stops the WUSB channel and removes the cluster reservation.
*/
void wusbhc_stop(struct wusbhc *wusbhc)
{
- if (wusbhc->active) {
- wusbhc->active = 0;
- wusbhc->stop(wusbhc);
- wusbhc_sec_stop(wusbhc);
- __wusbhc_host_disconnect_ie(wusbhc);
- wusbhc_devconnect_stop(wusbhc);
- wusbhc_rsv_terminate(wusbhc);
- }
-}
-EXPORT_SYMBOL_GPL(wusbhc_stop);
-
-/*
- * Change the CHID in a WUSB Channel
- *
- * If it is just a new CHID, send a Host Disconnect IE and then change
- * the CHID IE.
- */
-static int __wusbhc_chid_change(struct wusbhc *wusbhc,
- const struct wusb_ckhdid *chid)
-{
- int result = -ENOSYS;
- struct device *dev = wusbhc->dev;
- dev_err(dev, "%s() not implemented yet\n", __func__);
- return result;
-
- BUG_ON(wusbhc->wuie_host_info == NULL);
- __wusbhc_host_disconnect_ie(wusbhc);
- wusbhc->wuie_host_info->CHID = *chid;
- result = wusbhc_mmcie_set(wusbhc, 0, 0, &wusbhc->wuie_host_info->hdr);
- if (result < 0)
- dev_err(dev, "Can't update Host Info WUSB IE: %d\n", result);
- return result;
+ wusbhc_mmc_stop(wusbhc);
+ wusbhc_sec_stop(wusbhc);
+ wusbhc_devconnect_stop(wusbhc);
+ wusbhc_rsv_terminate(wusbhc);
}
/*
@@ -306,16 +267,19 @@
chid = NULL;
mutex_lock(&wusbhc->mutex);
- if (wusbhc->active) {
- if (chid)
- result = __wusbhc_chid_change(wusbhc, chid);
- else
- wusbhc_stop(wusbhc);
- } else {
- if (chid)
- wusbhc_start(wusbhc, chid);
+ if (chid) {
+ if (wusbhc->active) {
+ mutex_unlock(&wusbhc->mutex);
+ return -EBUSY;
+ }
+ wusbhc->chid = *chid;
}
mutex_unlock(&wusbhc->mutex);
+
+ if (chid)
+ result = uwb_radio_start(&wusbhc->pal);
+ else
+ uwb_radio_stop(&wusbhc->pal);
return result;
}
EXPORT_SYMBOL_GPL(wusbhc_chid_set);
diff --git a/drivers/usb/wusbcore/pal.c b/drivers/usb/wusbcore/pal.c
index 7cc51e9..d0b172c 100644
--- a/drivers/usb/wusbcore/pal.c
+++ b/drivers/usb/wusbcore/pal.c
@@ -18,6 +18,16 @@
*/
#include "wusbhc.h"
+static void wusbhc_channel_changed(struct uwb_pal *pal, int channel)
+{
+ struct wusbhc *wusbhc = container_of(pal, struct wusbhc, pal);
+
+ if (channel < 0)
+ wusbhc_stop(wusbhc);
+ else
+ wusbhc_start(wusbhc);
+}
+
/**
* wusbhc_pal_register - register the WUSB HC as a UWB PAL
* @wusbhc: the WUSB HC
@@ -28,8 +38,10 @@
wusbhc->pal.name = "wusbhc";
wusbhc->pal.device = wusbhc->usb_hcd.self.controller;
+ wusbhc->pal.rc = wusbhc->uwb_rc;
+ wusbhc->pal.channel_changed = wusbhc_channel_changed;
- return uwb_pal_register(wusbhc->uwb_rc, &wusbhc->pal);
+ return uwb_pal_register(&wusbhc->pal);
}
/**
@@ -38,5 +50,5 @@
*/
void wusbhc_pal_unregister(struct wusbhc *wusbhc)
{
- uwb_pal_unregister(wusbhc->uwb_rc, &wusbhc->pal);
+ uwb_pal_unregister(&wusbhc->pal);
}
diff --git a/drivers/usb/wusbcore/reservation.c b/drivers/usb/wusbcore/reservation.c
index fc63e77..4ed9736 100644
--- a/drivers/usb/wusbcore/reservation.c
+++ b/drivers/usb/wusbcore/reservation.c
@@ -48,18 +48,19 @@
{
struct wusbhc *wusbhc = rsv->pal_priv;
struct device *dev = wusbhc->dev;
+ struct uwb_mas_bm mas;
char buf[72];
switch (rsv->state) {
case UWB_RSV_STATE_O_ESTABLISHED:
- bitmap_scnprintf(buf, sizeof(buf), rsv->mas.bm, UWB_NUM_MAS);
+ uwb_rsv_get_usable_mas(rsv, &mas);
+ bitmap_scnprintf(buf, sizeof(buf), mas.bm, UWB_NUM_MAS);
dev_dbg(dev, "established reservation: %s\n", buf);
- wusbhc_bwa_set(wusbhc, rsv->stream, &rsv->mas);
+ wusbhc_bwa_set(wusbhc, rsv->stream, &mas);
break;
case UWB_RSV_STATE_NONE:
dev_dbg(dev, "removed reservation\n");
wusbhc_bwa_set(wusbhc, 0, NULL);
- wusbhc->rsv = NULL;
break;
default:
dev_dbg(dev, "unexpected reservation state: %d\n", rsv->state);
@@ -86,13 +87,12 @@
bcid.data[0] = wusbhc->cluster_id;
bcid.data[1] = 0;
- rsv->owner = &rc->uwb_dev;
rsv->target.type = UWB_RSV_TARGET_DEVADDR;
rsv->target.devaddr = bcid;
rsv->type = UWB_DRP_TYPE_PRIVATE;
- rsv->max_mas = 256;
- rsv->min_mas = 16; /* one MAS per zone? */
- rsv->sparsity = 16; /* at least one MAS in each zone? */
+ rsv->max_mas = 256; /* try to get as much as possible */
+ rsv->min_mas = 15; /* one MAS per zone */
+ rsv->max_interval = 1; /* max latency is one zone */
rsv->is_multicast = true;
ret = uwb_rsv_establish(rsv);
@@ -105,11 +105,14 @@
/**
- * wusbhc_rsv_terminate - terminate any cluster reservation
+ * wusbhc_rsv_terminate - terminate the cluster reservation
* @wusbhc: the WUSB host whose reservation is to be terminated
*/
void wusbhc_rsv_terminate(struct wusbhc *wusbhc)
{
- if (wusbhc->rsv)
+ if (wusbhc->rsv) {
uwb_rsv_terminate(wusbhc->rsv);
+ uwb_rsv_destroy(wusbhc->rsv);
+ wusbhc->rsv = NULL;
+ }
}
diff --git a/drivers/usb/wusbcore/rh.c b/drivers/usb/wusbcore/rh.c
index 267a643..95c6fa3 100644
--- a/drivers/usb/wusbcore/rh.c
+++ b/drivers/usb/wusbcore/rh.c
@@ -71,19 +71,20 @@
*/
#include "wusbhc.h"
-#define D_LOCAL 0
-#include <linux/uwb/debug.h>
-
/*
* Reset a fake port
*
- * This can be called to reset a port from any other state or to reset
- * it when connecting. In Wireless USB they are different; when doing
- * a new connect that involves going over the authentication. When
- * just reseting, its a different story.
+ * Using a Reset Device IE is too heavyweight as it causes the device
+ * to enter the UnConnected state and leave the cluster, this can mean
+ * that when the device reconnects it is connected to a different fake
+ * port.
*
- * The Linux USB stack resets a port twice before it considers it
- * enabled, so we have to detect and ignore that.
+ * Instead, reset authenticated devices with a SetAddress(0), followed
+ * by a SetAddresss(AuthAddr).
+ *
+ * For unauthenticated devices just pretend to reset but do nothing.
+ * If the device initialization continues to fail it will eventually
+ * time out after TrustTimeout and enter the UnConnected state.
*
* @wusbhc is assumed referenced and @wusbhc->mutex unlocked.
*
@@ -97,20 +98,20 @@
{
int result = 0;
struct wusb_port *port = wusb_port_by_idx(wusbhc, port_idx);
+ struct wusb_dev *wusb_dev = port->wusb_dev;
- d_fnstart(3, wusbhc->dev, "(wusbhc %p port_idx %u)\n",
- wusbhc, port_idx);
- if (port->reset_count == 0) {
- wusbhc_devconnect_auth(wusbhc, port_idx);
- port->reset_count++;
- } else if (port->reset_count == 1)
- /* see header */
- d_printf(2, wusbhc->dev, "Ignoring second reset on port_idx "
- "%u\n", port_idx);
+ port->status |= USB_PORT_STAT_RESET;
+ port->change |= USB_PORT_STAT_C_RESET;
+
+ if (wusb_dev->addr & WUSB_DEV_ADDR_UNAUTH)
+ result = 0;
else
- result = wusbhc_dev_reset(wusbhc, port_idx);
- d_fnend(3, wusbhc->dev, "(wusbhc %p port_idx %u) = %d\n",
- wusbhc, port_idx, result);
+ result = wusb_dev_update_address(wusbhc, wusb_dev);
+
+ port->status &= ~USB_PORT_STAT_RESET;
+ port->status |= USB_PORT_STAT_ENABLE;
+ port->change |= USB_PORT_STAT_C_RESET | USB_PORT_STAT_C_ENABLE;
+
return result;
}
@@ -138,7 +139,6 @@
size_t cnt, size;
unsigned long *buf = (unsigned long *) _buf;
- d_fnstart(1, wusbhc->dev, "(wusbhc %p)\n", wusbhc);
/* WE DON'T LOCK, see comment */
size = wusbhc->ports_max + 1 /* hub bit */;
size = (size + 8 - 1) / 8; /* round to bytes */
@@ -147,8 +147,6 @@
set_bit(cnt + 1, buf);
else
clear_bit(cnt + 1, buf);
- d_fnend(1, wusbhc->dev, "(wusbhc %p) %u, buffer:\n", wusbhc, (int)size);
- d_dump(1, wusbhc->dev, _buf, size);
return size;
}
EXPORT_SYMBOL_GPL(wusbhc_rh_status_data);
@@ -197,9 +195,7 @@
static int wusbhc_rh_clear_hub_feat(struct wusbhc *wusbhc, u16 feature)
{
int result;
- struct device *dev = wusbhc->dev;
- d_fnstart(4, dev, "(%p, feature 0x%04u)\n", wusbhc, feature);
switch (feature) {
case C_HUB_LOCAL_POWER:
/* FIXME: maybe plug bit 0 to the power input status,
@@ -211,7 +207,6 @@
default:
result = -EPIPE;
}
- d_fnend(4, dev, "(%p, feature 0x%04u), %d\n", wusbhc, feature, result);
return result;
}
@@ -238,14 +233,10 @@
static int wusbhc_rh_set_port_feat(struct wusbhc *wusbhc, u16 feature,
u8 selector, u8 port_idx)
{
- int result = -EINVAL;
struct device *dev = wusbhc->dev;
- d_fnstart(4, dev, "(feat 0x%04u, selector 0x%u, port_idx %d)\n",
- feature, selector, port_idx);
-
if (port_idx > wusbhc->ports_max)
- goto error;
+ return -EINVAL;
switch (feature) {
/* According to USB2.0[11.24.2.13]p2, these features
@@ -255,35 +246,27 @@
case USB_PORT_FEAT_C_SUSPEND:
case USB_PORT_FEAT_C_CONNECTION:
case USB_PORT_FEAT_C_RESET:
- result = 0;
- break;
-
+ return 0;
case USB_PORT_FEAT_POWER:
/* No such thing, but we fake it works */
mutex_lock(&wusbhc->mutex);
wusb_port_by_idx(wusbhc, port_idx)->status |= USB_PORT_STAT_POWER;
mutex_unlock(&wusbhc->mutex);
- result = 0;
- break;
+ return 0;
case USB_PORT_FEAT_RESET:
- result = wusbhc_rh_port_reset(wusbhc, port_idx);
- break;
+ return wusbhc_rh_port_reset(wusbhc, port_idx);
case USB_PORT_FEAT_ENABLE:
case USB_PORT_FEAT_SUSPEND:
dev_err(dev, "(port_idx %d) set feat %d/%d UNIMPLEMENTED\n",
port_idx, feature, selector);
- result = -ENOSYS;
- break;
+ return -ENOSYS;
default:
dev_err(dev, "(port_idx %d) set feat %d/%d UNKNOWN\n",
port_idx, feature, selector);
- result = -EPIPE;
- break;
+ return -EPIPE;
}
-error:
- d_fnend(4, dev, "(feat 0x%04u, selector 0x%u, port_idx %d) = %d\n",
- feature, selector, port_idx, result);
- return result;
+
+ return 0;
}
/*
@@ -294,17 +277,13 @@
static int wusbhc_rh_clear_port_feat(struct wusbhc *wusbhc, u16 feature,
u8 selector, u8 port_idx)
{
- int result = -EINVAL;
+ int result = 0;
struct device *dev = wusbhc->dev;
- d_fnstart(4, dev, "(wusbhc %p feat 0x%04x selector %d port_idx %d)\n",
- wusbhc, feature, selector, port_idx);
-
if (port_idx > wusbhc->ports_max)
- goto error;
+ return -EINVAL;
mutex_lock(&wusbhc->mutex);
- result = 0;
switch (feature) {
case USB_PORT_FEAT_POWER: /* fake port always on */
/* According to USB2.0[11.24.2.7.1.4], no need to implement? */
@@ -324,10 +303,8 @@
break;
case USB_PORT_FEAT_SUSPEND:
case USB_PORT_FEAT_C_SUSPEND:
- case 0xffff: /* ??? FIXME */
dev_err(dev, "(port_idx %d) Clear feat %d/%d UNIMPLEMENTED\n",
port_idx, feature, selector);
- /* dump_stack(); */
result = -ENOSYS;
break;
default:
@@ -337,9 +314,7 @@
break;
}
mutex_unlock(&wusbhc->mutex);
-error:
- d_fnend(4, dev, "(wusbhc %p feat 0x%04x selector %d port_idx %d) = "
- "%d\n", wusbhc, feature, selector, port_idx, result);
+
return result;
}
@@ -351,22 +326,17 @@
static int wusbhc_rh_get_port_status(struct wusbhc *wusbhc, u16 port_idx,
u32 *_buf, u16 wLength)
{
- int result = -EINVAL;
u16 *buf = (u16 *) _buf;
- d_fnstart(1, wusbhc->dev, "(wusbhc %p port_idx %u wLength %u)\n",
- wusbhc, port_idx, wLength);
if (port_idx > wusbhc->ports_max)
- goto error;
+ return -EINVAL;
+
mutex_lock(&wusbhc->mutex);
buf[0] = cpu_to_le16(wusb_port_by_idx(wusbhc, port_idx)->status);
buf[1] = cpu_to_le16(wusb_port_by_idx(wusbhc, port_idx)->change);
- result = 0;
mutex_unlock(&wusbhc->mutex);
-error:
- d_fnend(1, wusbhc->dev, "(wusbhc %p) = %d, buffer:\n", wusbhc, result);
- d_dump(1, wusbhc->dev, _buf, wLength);
- return result;
+
+ return 0;
}
/*
diff --git a/drivers/usb/wusbcore/security.c b/drivers/usb/wusbcore/security.c
index a101cad..f4aa28e 100644
--- a/drivers/usb/wusbcore/security.c
+++ b/drivers/usb/wusbcore/security.c
@@ -27,19 +27,6 @@
#include <linux/random.h>
#include "wusbhc.h"
-/*
- * DEBUG & SECURITY WARNING!!!!
- *
- * If you enable this past 1, the debug code will weaken the
- * cryptographic safety of the system (on purpose, for debugging).
- *
- * Weaken means:
- * we print secret keys and intermediate values all the way,
- */
-#undef D_LOCAL
-#define D_LOCAL 2
-#include <linux/uwb/debug.h>
-
static void wusbhc_set_gtk_callback(struct urb *urb);
static void wusbhc_gtk_rekey_done_work(struct work_struct *work);
@@ -219,7 +206,6 @@
const void *itr, *top;
char buf[64];
- d_fnstart(3, dev, "(usb_dev %p, wusb_dev %p)\n", usb_dev, wusb_dev);
result = usb_get_descriptor(usb_dev, USB_DT_SECURITY,
0, &secd, sizeof(secd));
if (result < sizeof(secd)) {
@@ -228,8 +214,6 @@
goto error_secd;
}
secd_size = le16_to_cpu(secd.wTotalLength);
- d_printf(5, dev, "got %d bytes of sec descriptor, total is %d\n",
- result, secd_size);
secd_buf = kmalloc(secd_size, GFP_KERNEL);
if (secd_buf == NULL) {
dev_err(dev, "Can't allocate space for security descriptors\n");
@@ -242,7 +226,6 @@
"not enough data: %d\n", result);
goto error_secd_all;
}
- d_printf(5, dev, "got %d bytes of sec descriptors\n", result);
bytes = 0;
itr = secd_buf + sizeof(secd);
top = secd_buf + result;
@@ -279,14 +262,12 @@
goto error_no_ccm1;
}
wusb_dev->ccm1_etd = *ccm1_etd;
- dev_info(dev, "supported encryption: %s; using %s (0x%02x/%02x)\n",
- buf, wusb_et_name(ccm1_etd->bEncryptionType),
- ccm1_etd->bEncryptionValue, ccm1_etd->bAuthKeyIndex);
+ dev_dbg(dev, "supported encryption: %s; using %s (0x%02x/%02x)\n",
+ buf, wusb_et_name(ccm1_etd->bEncryptionType),
+ ccm1_etd->bEncryptionValue, ccm1_etd->bAuthKeyIndex);
result = 0;
kfree(secd_buf);
out:
- d_fnend(3, dev, "(usb_dev %p, wusb_dev %p) = %d\n",
- usb_dev, wusb_dev, result);
return result;
@@ -303,32 +284,6 @@
/* Nothing so far */
}
-static void hs_printk(unsigned level, struct device *dev,
- struct usb_handshake *hs)
-{
- d_printf(level, dev,
- " bMessageNumber: %u\n"
- " bStatus: %u\n"
- " tTKID: %02x %02x %02x\n"
- " CDID: %02x %02x %02x %02x %02x %02x %02x %02x\n"
- " %02x %02x %02x %02x %02x %02x %02x %02x\n"
- " nonce: %02x %02x %02x %02x %02x %02x %02x %02x\n"
- " %02x %02x %02x %02x %02x %02x %02x %02x\n"
- " MIC: %02x %02x %02x %02x %02x %02x %02x %02x\n",
- hs->bMessageNumber, hs->bStatus,
- hs->tTKID[2], hs->tTKID[1], hs->tTKID[0],
- hs->CDID[0], hs->CDID[1], hs->CDID[2], hs->CDID[3],
- hs->CDID[4], hs->CDID[5], hs->CDID[6], hs->CDID[7],
- hs->CDID[8], hs->CDID[9], hs->CDID[10], hs->CDID[11],
- hs->CDID[12], hs->CDID[13], hs->CDID[14], hs->CDID[15],
- hs->nonce[0], hs->nonce[1], hs->nonce[2], hs->nonce[3],
- hs->nonce[4], hs->nonce[5], hs->nonce[6], hs->nonce[7],
- hs->nonce[8], hs->nonce[9], hs->nonce[10], hs->nonce[11],
- hs->nonce[12], hs->nonce[13], hs->nonce[14], hs->nonce[15],
- hs->MIC[0], hs->MIC[1], hs->MIC[2], hs->MIC[3],
- hs->MIC[4], hs->MIC[5], hs->MIC[6], hs->MIC[7]);
-}
-
/**
* Update the address of an unauthenticated WUSB device
*
@@ -338,8 +293,7 @@
* Before the device's address (as known by it) was usb_dev->devnum |
* 0x80 (unauthenticated address). With this we update it to usb_dev->devnum.
*/
-static int wusb_dev_update_address(struct wusbhc *wusbhc,
- struct wusb_dev *wusb_dev)
+int wusb_dev_update_address(struct wusbhc *wusbhc, struct wusb_dev *wusb_dev)
{
int result = -ENOMEM;
struct usb_device *usb_dev = wusb_dev->usb_dev;
@@ -422,9 +376,6 @@
get_random_bytes(&hs[0].nonce, sizeof(hs[0].nonce));
memset(hs[0].MIC, 0, sizeof(hs[0].MIC)); /* Per WUSB1.0[T7-22] */
- d_printf(1, dev, "I: sending hs1:\n");
- hs_printk(2, dev, &hs[0]);
-
result = usb_control_msg(
usb_dev, usb_sndctrlpipe(usb_dev, 0),
USB_REQ_SET_HANDSHAKE,
@@ -445,8 +396,6 @@
dev_err(dev, "Handshake2: request failed: %d\n", result);
goto error_hs2;
}
- d_printf(1, dev, "got HS2:\n");
- hs_printk(2, dev, &hs[1]);
result = -EINVAL;
if (hs[1].bMessageNumber != 2) {
@@ -487,10 +436,6 @@
result);
goto error_hs2;
}
- d_printf(2, dev, "KCK:\n");
- d_dump(2, dev, keydvt_out.kck, sizeof(keydvt_out.kck));
- d_printf(2, dev, "PTK:\n");
- d_dump(2, dev, keydvt_out.ptk, sizeof(keydvt_out.ptk));
/* Compute MIC and verify it */
result = wusb_oob_mic(mic, keydvt_out.kck, &ccm_n, &hs[1]);
@@ -500,8 +445,6 @@
goto error_hs2;
}
- d_printf(2, dev, "MIC:\n");
- d_dump(2, dev, mic, sizeof(mic));
if (memcmp(hs[1].MIC, mic, sizeof(hs[1].MIC))) {
dev_err(dev, "Handshake2 failed: MIC mismatch\n");
goto error_hs2;
@@ -521,9 +464,6 @@
goto error_hs2;
}
- d_printf(1, dev, "I: sending hs3:\n");
- hs_printk(2, dev, &hs[2]);
-
result = usb_control_msg(
usb_dev, usb_sndctrlpipe(usb_dev, 0),
USB_REQ_SET_HANDSHAKE,
@@ -534,14 +474,11 @@
goto error_hs3;
}
- d_printf(1, dev, "I: turning on encryption on host for device\n");
- d_dump(2, dev, keydvt_out.ptk, sizeof(keydvt_out.ptk));
result = wusbhc->set_ptk(wusbhc, wusb_dev->port_idx, tkid,
keydvt_out.ptk, sizeof(keydvt_out.ptk));
if (result < 0)
goto error_wusbhc_set_ptk;
- d_printf(1, dev, "I: setting a GTK\n");
result = wusb_dev_set_gtk(wusbhc, wusb_dev);
if (result < 0) {
dev_err(dev, "Set GTK for device: request failed: %d\n",
@@ -551,13 +488,12 @@
/* Update the device's address from unauth to auth */
if (usb_dev->authenticated == 0) {
- d_printf(1, dev, "I: updating addres to auth from non-auth\n");
result = wusb_dev_update_address(wusbhc, wusb_dev);
if (result < 0)
goto error_dev_update_address;
}
result = 0;
- d_printf(1, dev, "I: 4way handshke done, device authenticated\n");
+ dev_info(dev, "device authenticated\n");
error_dev_update_address:
error_wusbhc_set_gtk:
@@ -570,10 +506,8 @@
memset(&keydvt_in, 0, sizeof(keydvt_in));
memset(&ccm_n, 0, sizeof(ccm_n));
memset(mic, 0, sizeof(mic));
- if (result < 0) {
- /* error path */
+ if (result < 0)
wusb_dev_set_encryption(usb_dev, 0);
- }
error_dev_set_encryption:
kfree(hs);
error_kzalloc:
diff --git a/drivers/usb/wusbcore/wa-nep.c b/drivers/usb/wusbcore/wa-nep.c
index 3f54299..17d2626 100644
--- a/drivers/usb/wusbcore/wa-nep.c
+++ b/drivers/usb/wusbcore/wa-nep.c
@@ -51,7 +51,7 @@
*/
#include <linux/workqueue.h>
#include <linux/ctype.h>
-#include <linux/uwb/debug.h>
+
#include "wa-hc.h"
#include "wusbhc.h"
@@ -139,13 +139,10 @@
/* FIXME: unimplemented WA NOTIFs */
/* fallthru */
default:
- if (printk_ratelimit()) {
- dev_err(dev, "HWA: unknown notification 0x%x, "
- "%zu bytes; discarding\n",
- notif_hdr->bNotifyType,
- (size_t)notif_hdr->bLength);
- dump_bytes(dev, notif_hdr, 16);
- }
+ dev_err(dev, "HWA: unknown notification 0x%x, "
+ "%zu bytes; discarding\n",
+ notif_hdr->bNotifyType,
+ (size_t)notif_hdr->bLength);
break;
}
}
@@ -160,12 +157,9 @@
* discard the data, as this should not happen.
*/
exhausted_buffer:
- if (!printk_ratelimit())
- goto out;
dev_warn(dev, "HWA: device sent short notification, "
"%d bytes missing; discarding %d bytes.\n",
missing, (int)size);
- dump_bytes(dev, itr, size);
goto out;
}
diff --git a/drivers/usb/wusbcore/wa-rpipe.c b/drivers/usb/wusbcore/wa-rpipe.c
index f18e4aa..7369655 100644
--- a/drivers/usb/wusbcore/wa-rpipe.c
+++ b/drivers/usb/wusbcore/wa-rpipe.c
@@ -60,13 +60,10 @@
#include <linux/init.h>
#include <asm/atomic.h>
#include <linux/bitmap.h>
+
#include "wusbhc.h"
#include "wa-hc.h"
-#define D_LOCAL 0
-#include <linux/uwb/debug.h>
-
-
static int __rpipe_get_descr(struct wahc *wa,
struct usb_rpipe_descriptor *descr, u16 index)
{
@@ -76,7 +73,6 @@
/* Get the RPIPE descriptor -- we cannot use the usb_get_descriptor()
* function because the arguments are different.
*/
- d_printf(1, dev, "rpipe %u: get descr\n", index);
result = usb_control_msg(
wa->usb_dev, usb_rcvctrlpipe(wa->usb_dev, 0),
USB_REQ_GET_DESCRIPTOR,
@@ -115,7 +111,6 @@
/* we cannot use the usb_get_descriptor() function because the
* arguments are different.
*/
- d_printf(1, dev, "rpipe %u: set descr\n", index);
result = usb_control_msg(
wa->usb_dev, usb_sndctrlpipe(wa->usb_dev, 0),
USB_REQ_SET_DESCRIPTOR,
@@ -174,13 +169,12 @@
{
struct wa_rpipe *rpipe = container_of(_rpipe, struct wa_rpipe, refcnt);
u8 index = le16_to_cpu(rpipe->descr.wRPipeIndex);
- d_fnstart(1, NULL, "(rpipe %p %u)\n", rpipe, index);
+
if (rpipe->ep)
rpipe->ep->hcpriv = NULL;
rpipe_put_idx(rpipe->wa, index);
wa_put(rpipe->wa);
kfree(rpipe);
- d_fnend(1, NULL, "(rpipe %p %u)\n", rpipe, index);
}
EXPORT_SYMBOL_GPL(rpipe_destroy);
@@ -202,7 +196,6 @@
struct wa_rpipe *rpipe;
struct device *dev = &wa->usb_iface->dev;
- d_fnstart(3, dev, "(wa %p crs 0x%02x)\n", wa, crs);
rpipe = kzalloc(sizeof(*rpipe), gfp);
if (rpipe == NULL)
return -ENOMEM;
@@ -223,14 +216,12 @@
}
*prpipe = NULL;
kfree(rpipe);
- d_fnend(3, dev, "(wa %p crs 0x%02x) = -ENXIO\n", wa, crs);
return -ENXIO;
found:
set_bit(rpipe_idx, wa->rpipe_bm);
rpipe->wa = wa_get(wa);
*prpipe = rpipe;
- d_fnstart(3, dev, "(wa %p crs 0x%02x) = 0\n", wa, crs);
return 0;
}
@@ -239,7 +230,6 @@
int result;
struct device *dev = &wa->usb_iface->dev;
- d_printf(1, dev, "rpipe %u: reset\n", index);
result = usb_control_msg(
wa->usb_dev, usb_sndctrlpipe(wa->usb_dev, 0),
USB_REQ_RPIPE_RESET,
@@ -276,7 +266,6 @@
struct usb_descriptor_header *hdr;
struct usb_wireless_ep_comp_descriptor *epcd;
- d_fnstart(3, dev, "(ep %p)\n", ep);
if (ep->desc.bEndpointAddress == 0) {
epcd = &epc0;
goto out;
@@ -310,7 +299,6 @@
itr_size -= hdr->bDescriptorType;
}
out:
- d_fnend(3, dev, "(ep %p) = %p\n", ep, epcd);
return epcd;
}
@@ -329,8 +317,6 @@
struct usb_wireless_ep_comp_descriptor *epcd;
u8 unauth;
- d_fnstart(3, dev, "(rpipe %p wa %p ep %p, urb %p)\n",
- rpipe, wa, ep, urb);
epcd = rpipe_epc_find(dev, ep);
if (epcd == NULL) {
dev_err(dev, "ep 0x%02x: can't find companion descriptor\n",
@@ -350,10 +336,12 @@
/* FIXME: use maximum speed as supported or recommended by device */
rpipe->descr.bSpeed = usb_pipeendpoint(urb->pipe) == 0 ?
UWB_PHY_RATE_53 : UWB_PHY_RATE_200;
- d_printf(2, dev, "addr %u (0x%02x) rpipe #%u ep# %u speed %d\n",
- urb->dev->devnum, urb->dev->devnum | unauth,
- le16_to_cpu(rpipe->descr.wRPipeIndex),
- usb_pipeendpoint(urb->pipe), rpipe->descr.bSpeed);
+
+ dev_dbg(dev, "addr %u (0x%02x) rpipe #%u ep# %u speed %d\n",
+ urb->dev->devnum, urb->dev->devnum | unauth,
+ le16_to_cpu(rpipe->descr.wRPipeIndex),
+ usb_pipeendpoint(urb->pipe), rpipe->descr.bSpeed);
+
/* see security.c:wusb_update_address() */
if (unlikely(urb->dev->devnum == 0x80))
rpipe->descr.bDeviceAddress = 0;
@@ -384,8 +372,6 @@
}
result = 0;
error:
- d_fnend(3, dev, "(rpipe %p wa %p ep %p urb %p) = %d\n",
- rpipe, wa, ep, urb, result);
return result;
}
@@ -405,8 +391,6 @@
u8 unauth = (usb_dev->wusb && !usb_dev->authenticated) ? 0x80 : 0;
u8 portnum = wusb_port_no_to_idx(urb->dev->portnum);
- d_fnstart(3, dev, "(rpipe %p wa %p ep %p, urb %p)\n",
- rpipe, wa, ep, urb);
#define AIM_CHECK(rdf, val, text) \
do { \
if (rpipe->descr.rdf != (val)) { \
@@ -451,8 +435,6 @@
struct wa_rpipe *rpipe;
u8 eptype;
- d_fnstart(3, dev, "(wa %p ep %p urb %p gfp 0x%08x)\n", wa, ep, urb,
- gfp);
mutex_lock(&wa->rpipe_mutex);
rpipe = ep->hcpriv;
if (rpipe != NULL) {
@@ -462,9 +444,9 @@
goto error;
}
__rpipe_get(rpipe);
- d_printf(2, dev, "ep 0x%02x: reusing rpipe %u\n",
- ep->desc.bEndpointAddress,
- le16_to_cpu(rpipe->descr.wRPipeIndex));
+ dev_dbg(dev, "ep 0x%02x: reusing rpipe %u\n",
+ ep->desc.bEndpointAddress,
+ le16_to_cpu(rpipe->descr.wRPipeIndex));
} else {
/* hmm, assign idle rpipe, aim it */
result = -ENOBUFS;
@@ -480,14 +462,12 @@
ep->hcpriv = rpipe;
rpipe->ep = ep;
__rpipe_get(rpipe); /* for caching into ep->hcpriv */
- d_printf(2, dev, "ep 0x%02x: using rpipe %u\n",
- ep->desc.bEndpointAddress,
- le16_to_cpu(rpipe->descr.wRPipeIndex));
+ dev_dbg(dev, "ep 0x%02x: using rpipe %u\n",
+ ep->desc.bEndpointAddress,
+ le16_to_cpu(rpipe->descr.wRPipeIndex));
}
- d_dump(4, dev, &rpipe->descr, sizeof(rpipe->descr));
error:
mutex_unlock(&wa->rpipe_mutex);
- d_fnend(3, dev, "(wa %p ep %p urb %p gfp 0x%08x)\n", wa, ep, urb, gfp);
return result;
}
@@ -507,7 +487,7 @@
void wa_rpipes_destroy(struct wahc *wa)
{
struct device *dev = &wa->usb_iface->dev;
- d_fnstart(3, dev, "(wa %p)\n", wa);
+
if (!bitmap_empty(wa->rpipe_bm, wa->rpipes)) {
char buf[256];
WARN_ON(1);
@@ -515,7 +495,6 @@
dev_err(dev, "BUG: pipes not released on exit: %s\n", buf);
}
kfree(wa->rpipe_bm);
- d_fnend(3, dev, "(wa %p)\n", wa);
}
/*
@@ -530,33 +509,20 @@
*/
void rpipe_ep_disable(struct wahc *wa, struct usb_host_endpoint *ep)
{
- struct device *dev = &wa->usb_iface->dev;
struct wa_rpipe *rpipe;
- d_fnstart(2, dev, "(wa %p ep %p)\n", wa, ep);
+
mutex_lock(&wa->rpipe_mutex);
rpipe = ep->hcpriv;
if (rpipe != NULL) {
- unsigned rc = atomic_read(&rpipe->refcnt.refcount);
- int result;
u16 index = le16_to_cpu(rpipe->descr.wRPipeIndex);
- if (rc != 1)
- d_printf(1, dev, "(wa %p ep %p) rpipe %p refcnt %u\n",
- wa, ep, rpipe, rc);
-
- d_printf(1, dev, "rpipe %u: abort\n", index);
- result = usb_control_msg(
+ usb_control_msg(
wa->usb_dev, usb_rcvctrlpipe(wa->usb_dev, 0),
USB_REQ_RPIPE_ABORT,
USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_RPIPE,
0, index, NULL, 0, 1000 /* FIXME: arbitrary */);
- if (result < 0 && result != -ENODEV /* dev is gone */)
- d_printf(1, dev, "(wa %p rpipe %u): abort failed: %d\n",
- wa, index, result);
rpipe_put(rpipe);
}
mutex_unlock(&wa->rpipe_mutex);
- d_fnend(2, dev, "(wa %p ep %p)\n", wa, ep);
- return;
}
EXPORT_SYMBOL_GPL(rpipe_ep_disable);
diff --git a/drivers/usb/wusbcore/wa-xfer.c b/drivers/usb/wusbcore/wa-xfer.c
index c038635..238a96a 100644
--- a/drivers/usb/wusbcore/wa-xfer.c
+++ b/drivers/usb/wusbcore/wa-xfer.c
@@ -82,13 +82,10 @@
#include <linux/init.h>
#include <linux/spinlock.h>
#include <linux/hash.h>
+
#include "wa-hc.h"
#include "wusbhc.h"
-#undef D_LOCAL
-#define D_LOCAL 0 /* 0 disabled, > 0 different levels... */
-#include <linux/uwb/debug.h>
-
enum {
WA_SEGS_MAX = 255,
};
@@ -180,7 +177,6 @@
}
}
kfree(xfer);
- d_printf(2, NULL, "xfer %p destroyed\n", xfer);
}
static void wa_xfer_get(struct wa_xfer *xfer)
@@ -190,10 +186,7 @@
static void wa_xfer_put(struct wa_xfer *xfer)
{
- d_fnstart(3, NULL, "(xfer %p) -- ref count bef put %d\n",
- xfer, atomic_read(&xfer->refcnt.refcount));
kref_put(&xfer->refcnt, wa_xfer_destroy);
- d_fnend(3, NULL, "(xfer %p) = void\n", xfer);
}
/*
@@ -209,7 +202,7 @@
static void wa_xfer_giveback(struct wa_xfer *xfer)
{
unsigned long flags;
- d_fnstart(3, NULL, "(xfer %p)\n", xfer);
+
spin_lock_irqsave(&xfer->wa->xfer_list_lock, flags);
list_del_init(&xfer->list_node);
spin_unlock_irqrestore(&xfer->wa->xfer_list_lock, flags);
@@ -217,7 +210,6 @@
wusbhc_giveback_urb(xfer->wa->wusb, xfer->urb, xfer->result);
wa_put(xfer->wa);
wa_xfer_put(xfer);
- d_fnend(3, NULL, "(xfer %p) = void\n", xfer);
}
/*
@@ -227,13 +219,10 @@
*/
static void wa_xfer_completion(struct wa_xfer *xfer)
{
- d_fnstart(3, NULL, "(xfer %p)\n", xfer);
if (xfer->wusb_dev)
wusb_dev_put(xfer->wusb_dev);
rpipe_put(xfer->ep->hcpriv);
wa_xfer_giveback(xfer);
- d_fnend(3, NULL, "(xfer %p) = void\n", xfer);
- return;
}
/*
@@ -243,12 +232,12 @@
*/
static unsigned __wa_xfer_is_done(struct wa_xfer *xfer)
{
+ struct device *dev = &xfer->wa->usb_iface->dev;
unsigned result, cnt;
struct wa_seg *seg;
struct urb *urb = xfer->urb;
unsigned found_short = 0;
- d_fnstart(3, NULL, "(xfer %p)\n", xfer);
result = xfer->segs_done == xfer->segs_submitted;
if (result == 0)
goto out;
@@ -258,10 +247,8 @@
switch (seg->status) {
case WA_SEG_DONE:
if (found_short && seg->result > 0) {
- if (printk_ratelimit())
- printk(KERN_ERR "xfer %p#%u: bad short "
- "segments (%zu)\n", xfer, cnt,
- seg->result);
+ dev_dbg(dev, "xfer %p#%u: bad short segments (%zu)\n",
+ xfer, cnt, seg->result);
urb->status = -EINVAL;
goto out;
}
@@ -269,36 +256,30 @@
if (seg->result < xfer->seg_size
&& cnt != xfer->segs-1)
found_short = 1;
- d_printf(2, NULL, "xfer %p#%u: DONE short %d "
- "result %zu urb->actual_length %d\n",
- xfer, seg->index, found_short, seg->result,
- urb->actual_length);
+ dev_dbg(dev, "xfer %p#%u: DONE short %d "
+ "result %zu urb->actual_length %d\n",
+ xfer, seg->index, found_short, seg->result,
+ urb->actual_length);
break;
case WA_SEG_ERROR:
xfer->result = seg->result;
- d_printf(2, NULL, "xfer %p#%u: ERROR result %zu\n",
- xfer, seg->index, seg->result);
+ dev_dbg(dev, "xfer %p#%u: ERROR result %zu\n",
+ xfer, seg->index, seg->result);
goto out;
case WA_SEG_ABORTED:
- WARN_ON(urb->status != -ECONNRESET
- && urb->status != -ENOENT);
- d_printf(2, NULL, "xfer %p#%u ABORTED: result %d\n",
- xfer, seg->index, urb->status);
+ dev_dbg(dev, "xfer %p#%u ABORTED: result %d\n",
+ xfer, seg->index, urb->status);
xfer->result = urb->status;
goto out;
default:
- /* if (printk_ratelimit()) */
- printk(KERN_ERR "xfer %p#%u: "
- "is_done bad state %d\n",
- xfer, cnt, seg->status);
+ dev_warn(dev, "xfer %p#%u: is_done bad state %d\n",
+ xfer, cnt, seg->status);
xfer->result = -EINVAL;
- WARN_ON(1);
goto out;
}
}
xfer->result = 0;
out:
- d_fnend(3, NULL, "(xfer %p) = void\n", xfer);
return result;
}
@@ -424,8 +405,6 @@
struct urb *urb = xfer->urb;
struct wa_rpipe *rpipe = xfer->ep->hcpriv;
- d_fnstart(3, dev, "(xfer %p [rpipe %p] urb %p)\n",
- xfer, rpipe, urb);
switch (rpipe->descr.bmAttribute & 0x3) {
case USB_ENDPOINT_XFER_CONTROL:
*pxfer_type = WA_XFER_TYPE_CTL;
@@ -472,12 +451,10 @@
if (xfer->segs == 0 && *pxfer_type == WA_XFER_TYPE_CTL)
xfer->segs = 1;
error:
- d_fnend(3, dev, "(xfer %p [rpipe %p] urb %p) = %d\n",
- xfer, rpipe, urb, (int)result);
return result;
}
-/** Fill in the common request header and xfer-type specific data. */
+/* Fill in the common request header and xfer-type specific data. */
static void __wa_xfer_setup_hdr0(struct wa_xfer *xfer,
struct wa_xfer_hdr *xfer_hdr0,
enum wa_xfer_type xfer_type,
@@ -534,14 +511,13 @@
unsigned rpipe_ready = 0;
u8 done = 0;
- d_fnstart(3, NULL, "(urb %p [%d])\n", urb, urb->status);
switch (urb->status) {
case 0:
spin_lock_irqsave(&xfer->lock, flags);
wa = xfer->wa;
dev = &wa->usb_iface->dev;
- d_printf(2, dev, "xfer %p#%u: data out done (%d bytes)\n",
- xfer, seg->index, urb->actual_length);
+ dev_dbg(dev, "xfer %p#%u: data out done (%d bytes)\n",
+ xfer, seg->index, urb->actual_length);
if (seg->status < WA_SEG_PENDING)
seg->status = WA_SEG_PENDING;
seg->result = urb->actual_length;
@@ -555,9 +531,8 @@
wa = xfer->wa;
dev = &wa->usb_iface->dev;
rpipe = xfer->ep->hcpriv;
- if (printk_ratelimit())
- dev_err(dev, "xfer %p#%u: data out error %d\n",
- xfer, seg->index, urb->status);
+ dev_dbg(dev, "xfer %p#%u: data out error %d\n",
+ xfer, seg->index, urb->status);
if (edc_inc(&wa->nep_edc, EDC_MAX_ERRORS,
EDC_ERROR_TIMEFRAME)){
dev_err(dev, "DTO: URB max acceptable errors "
@@ -578,7 +553,6 @@
if (rpipe_ready)
wa_xfer_delayed_run(rpipe);
}
- d_fnend(3, NULL, "(urb %p [%d]) = void\n", urb, urb->status);
}
/*
@@ -610,14 +584,12 @@
unsigned rpipe_ready;
u8 done = 0;
- d_fnstart(3, NULL, "(urb %p [%d])\n", urb, urb->status);
switch (urb->status) {
case 0:
spin_lock_irqsave(&xfer->lock, flags);
wa = xfer->wa;
dev = &wa->usb_iface->dev;
- d_printf(2, dev, "xfer %p#%u: request done\n",
- xfer, seg->index);
+ dev_dbg(dev, "xfer %p#%u: request done\n", xfer, seg->index);
if (xfer->is_inbound && seg->status < WA_SEG_PENDING)
seg->status = WA_SEG_PENDING;
spin_unlock_irqrestore(&xfer->lock, flags);
@@ -652,7 +624,6 @@
if (rpipe_ready)
wa_xfer_delayed_run(rpipe);
}
- d_fnend(3, NULL, "(urb %p [%d]) = void\n", urb, urb->status);
}
/*
@@ -750,9 +721,6 @@
size_t xfer_hdr_size, cnt, transfer_size;
struct wa_xfer_hdr *xfer_hdr0, *xfer_hdr;
- d_fnstart(3, dev, "(xfer %p [rpipe %p] urb %p)\n",
- xfer, xfer->ep->hcpriv, urb);
-
result = __wa_xfer_setup_sizes(xfer, &xfer_type);
if (result < 0)
goto error_setup_sizes;
@@ -788,8 +756,6 @@
result = 0;
error_setup_segs:
error_setup_sizes:
- d_fnend(3, dev, "(xfer %p [rpipe %p] urb %p) = %d\n",
- xfer, xfer->ep->hcpriv, urb, result);
return result;
}
@@ -843,9 +809,6 @@
struct wa_xfer *xfer;
unsigned long flags;
- d_fnstart(1, dev, "(rpipe #%d) %d segments available\n",
- le16_to_cpu(rpipe->descr.wRPipeIndex),
- atomic_read(&rpipe->segs_available));
spin_lock_irqsave(&rpipe->seg_lock, flags);
while (atomic_read(&rpipe->segs_available) > 0
&& !list_empty(&rpipe->seg_list)) {
@@ -854,10 +817,8 @@
list_del(&seg->list_node);
xfer = seg->xfer;
result = __wa_seg_submit(rpipe, xfer, seg);
- d_printf(1, dev, "xfer %p#%u submitted from delayed "
- "[%d segments available] %d\n",
- xfer, seg->index,
- atomic_read(&rpipe->segs_available), result);
+ dev_dbg(dev, "xfer %p#%u submitted from delayed [%d segments available] %d\n",
+ xfer, seg->index, atomic_read(&rpipe->segs_available), result);
if (unlikely(result < 0)) {
spin_unlock_irqrestore(&rpipe->seg_lock, flags);
spin_lock_irqsave(&xfer->lock, flags);
@@ -868,10 +829,6 @@
}
}
spin_unlock_irqrestore(&rpipe->seg_lock, flags);
- d_fnend(1, dev, "(rpipe #%d) = void, %d segments available\n",
- le16_to_cpu(rpipe->descr.wRPipeIndex),
- atomic_read(&rpipe->segs_available));
-
}
/*
@@ -894,9 +851,6 @@
u8 available;
u8 empty;
- d_fnstart(3, dev, "(xfer %p [rpipe %p])\n",
- xfer, xfer->ep->hcpriv);
-
spin_lock_irqsave(&wa->xfer_list_lock, flags);
list_add_tail(&xfer->list_node, &wa->xfer_list);
spin_unlock_irqrestore(&wa->xfer_list_lock, flags);
@@ -908,30 +862,24 @@
available = atomic_read(&rpipe->segs_available);
empty = list_empty(&rpipe->seg_list);
seg = xfer->seg[cnt];
- d_printf(2, dev, "xfer %p#%u: available %u empty %u (%s)\n",
- xfer, cnt, available, empty,
- available == 0 || !empty ? "delayed" : "submitted");
+ dev_dbg(dev, "xfer %p#%u: available %u empty %u (%s)\n",
+ xfer, cnt, available, empty,
+ available == 0 || !empty ? "delayed" : "submitted");
if (available == 0 || !empty) {
- d_printf(1, dev, "xfer %p#%u: delayed\n", xfer, cnt);
+ dev_dbg(dev, "xfer %p#%u: delayed\n", xfer, cnt);
seg->status = WA_SEG_DELAYED;
list_add_tail(&seg->list_node, &rpipe->seg_list);
} else {
result = __wa_seg_submit(rpipe, xfer, seg);
- if (result < 0)
+ if (result < 0) {
+ __wa_xfer_abort(xfer);
goto error_seg_submit;
+ }
}
xfer->segs_submitted++;
}
- spin_unlock_irqrestore(&rpipe->seg_lock, flags);
- d_fnend(3, dev, "(xfer %p [rpipe %p]) = void\n", xfer,
- xfer->ep->hcpriv);
- return result;
-
error_seg_submit:
- __wa_xfer_abort(xfer);
spin_unlock_irqrestore(&rpipe->seg_lock, flags);
- d_fnend(3, dev, "(xfer %p [rpipe %p]) = void\n", xfer,
- xfer->ep->hcpriv);
return result;
}
@@ -964,11 +912,9 @@
struct urb *urb = xfer->urb;
struct wahc *wa = xfer->wa;
struct wusbhc *wusbhc = wa->wusb;
- struct device *dev = &wa->usb_iface->dev;
struct wusb_dev *wusb_dev;
unsigned done;
- d_fnstart(3, dev, "(wa %p urb %p)\n", wa, urb);
result = rpipe_get_by_ep(wa, xfer->ep, urb, xfer->gfp);
if (result < 0)
goto error_rpipe_get;
@@ -997,7 +943,6 @@
if (result < 0)
goto error_xfer_submit;
spin_unlock_irqrestore(&xfer->lock, flags);
- d_fnend(3, dev, "(wa %p urb %p) = void\n", wa, urb);
return;
/* this is basically wa_xfer_completion() broken up wa_xfer_giveback()
@@ -1015,7 +960,6 @@
error_rpipe_get:
xfer->result = result;
wa_xfer_giveback(xfer);
- d_fnend(3, dev, "(wa %p urb %p) = (void) %d\n", wa, urb, result);
return;
error_xfer_submit:
@@ -1024,8 +968,6 @@
spin_unlock_irqrestore(&xfer->lock, flags);
if (done)
wa_xfer_completion(xfer);
- d_fnend(3, dev, "(wa %p urb %p) = (void) %d\n", wa, urb, result);
- return;
}
/*
@@ -1041,11 +983,9 @@
void wa_urb_enqueue_run(struct work_struct *ws)
{
struct wahc *wa = container_of(ws, struct wahc, xfer_work);
- struct device *dev = &wa->usb_iface->dev;
struct wa_xfer *xfer, *next;
struct urb *urb;
- d_fnstart(3, dev, "(wa %p)\n", wa);
spin_lock_irq(&wa->xfer_list_lock);
list_for_each_entry_safe(xfer, next, &wa->xfer_delayed_list,
list_node) {
@@ -1059,7 +999,6 @@
spin_lock_irq(&wa->xfer_list_lock);
}
spin_unlock_irq(&wa->xfer_list_lock);
- d_fnend(3, dev, "(wa %p) = void\n", wa);
}
EXPORT_SYMBOL_GPL(wa_urb_enqueue_run);
@@ -1084,9 +1023,6 @@
unsigned long my_flags;
unsigned cant_sleep = irqs_disabled() | in_atomic();
- d_fnstart(3, dev, "(wa %p ep %p urb %p [%d] gfp 0x%x)\n",
- wa, ep, urb, urb->transfer_buffer_length, gfp);
-
if (urb->transfer_buffer == NULL
&& !(urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP)
&& urb->transfer_buffer_length != 0) {
@@ -1108,11 +1044,13 @@
xfer->gfp = gfp;
xfer->ep = ep;
urb->hcpriv = xfer;
- d_printf(2, dev, "xfer %p urb %p pipe 0x%02x [%d bytes] %s %s %s\n",
- xfer, urb, urb->pipe, urb->transfer_buffer_length,
- urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP ? "dma" : "nodma",
- urb->pipe & USB_DIR_IN ? "inbound" : "outbound",
- cant_sleep ? "deferred" : "inline");
+
+ dev_dbg(dev, "xfer %p urb %p pipe 0x%02x [%d bytes] %s %s %s\n",
+ xfer, urb, urb->pipe, urb->transfer_buffer_length,
+ urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP ? "dma" : "nodma",
+ urb->pipe & USB_DIR_IN ? "inbound" : "outbound",
+ cant_sleep ? "deferred" : "inline");
+
if (cant_sleep) {
usb_get_urb(urb);
spin_lock_irqsave(&wa->xfer_list_lock, my_flags);
@@ -1122,15 +1060,11 @@
} else {
wa_urb_enqueue_b(xfer);
}
- d_fnend(3, dev, "(wa %p ep %p urb %p [%d] gfp 0x%x) = 0\n",
- wa, ep, urb, urb->transfer_buffer_length, gfp);
return 0;
error_dequeued:
kfree(xfer);
error_kmalloc:
- d_fnend(3, dev, "(wa %p ep %p urb %p [%d] gfp 0x%x) = %d\n",
- wa, ep, urb, urb->transfer_buffer_length, gfp, result);
return result;
}
EXPORT_SYMBOL_GPL(wa_urb_enqueue);
@@ -1155,7 +1089,6 @@
*/
int wa_urb_dequeue(struct wahc *wa, struct urb *urb)
{
- struct device *dev = &wa->usb_iface->dev;
unsigned long flags, flags2;
struct wa_xfer *xfer;
struct wa_seg *seg;
@@ -1163,9 +1096,6 @@
unsigned cnt;
unsigned rpipe_ready = 0;
- d_fnstart(3, dev, "(wa %p, urb %p)\n", wa, urb);
-
- d_printf(1, dev, "xfer %p urb %p: aborting\n", urb->hcpriv, urb);
xfer = urb->hcpriv;
if (xfer == NULL) {
/* NOthing setup yet enqueue will see urb->status !=
@@ -1234,13 +1164,11 @@
wa_xfer_completion(xfer);
if (rpipe_ready)
wa_xfer_delayed_run(rpipe);
- d_fnend(3, dev, "(wa %p, urb %p) = 0\n", wa, urb);
return 0;
out_unlock:
spin_unlock_irqrestore(&xfer->lock, flags);
out:
- d_fnend(3, dev, "(wa %p, urb %p) = 0\n", wa, urb);
return 0;
dequeue_delayed:
@@ -1250,7 +1178,6 @@
spin_unlock_irqrestore(&xfer->lock, flags);
wa_xfer_giveback(xfer);
usb_put_urb(urb); /* we got a ref in enqueue() */
- d_fnend(3, dev, "(wa %p, urb %p) = 0\n", wa, urb);
return 0;
}
EXPORT_SYMBOL_GPL(wa_urb_dequeue);
@@ -1326,7 +1253,6 @@
u8 usb_status;
unsigned rpipe_ready = 0;
- d_fnstart(3, dev, "(wa %p xfer %p)\n", wa, xfer);
spin_lock_irqsave(&xfer->lock, flags);
seg_idx = xfer_result->bTransferSegment & 0x7f;
if (unlikely(seg_idx >= xfer->segs))
@@ -1334,8 +1260,8 @@
seg = xfer->seg[seg_idx];
rpipe = xfer->ep->hcpriv;
usb_status = xfer_result->bTransferStatus;
- d_printf(2, dev, "xfer %p#%u: bTransferStatus 0x%02x (seg %u)\n",
- xfer, seg_idx, usb_status, seg->status);
+ dev_dbg(dev, "xfer %p#%u: bTransferStatus 0x%02x (seg %u)\n",
+ xfer, seg_idx, usb_status, seg->status);
if (seg->status == WA_SEG_ABORTED
|| seg->status == WA_SEG_ERROR) /* already handled */
goto segment_aborted;
@@ -1391,10 +1317,8 @@
wa_xfer_completion(xfer);
if (rpipe_ready)
wa_xfer_delayed_run(rpipe);
- d_fnend(3, dev, "(wa %p xfer %p) = void\n", wa, xfer);
return;
-
error_submit_buf_in:
if (edc_inc(&wa->dti_edc, EDC_MAX_ERRORS, EDC_ERROR_TIMEFRAME)) {
dev_err(dev, "DTI: URB max acceptable errors "
@@ -1416,11 +1340,8 @@
wa_xfer_completion(xfer);
if (rpipe_ready)
wa_xfer_delayed_run(rpipe);
- d_fnend(3, dev, "(wa %p xfer %p) = void [segment/DTI-submit error]\n",
- wa, xfer);
return;
-
error_bad_seg:
spin_unlock_irqrestore(&xfer->lock, flags);
wa_urb_dequeue(wa, xfer->urb);
@@ -1431,17 +1352,11 @@
"exceeded, resetting device\n");
wa_reset_all(wa);
}
- d_fnend(3, dev, "(wa %p xfer %p) = void [bad seg]\n", wa, xfer);
return;
-
segment_aborted:
/* nothing to do, as the aborter did the completion */
spin_unlock_irqrestore(&xfer->lock, flags);
- d_fnend(3, dev, "(wa %p xfer %p) = void [segment aborted]\n",
- wa, xfer);
- return;
-
}
/*
@@ -1465,15 +1380,14 @@
unsigned long flags;
u8 done = 0;
- d_fnstart(3, NULL, "(urb %p [%d])\n", urb, urb->status);
switch (urb->status) {
case 0:
spin_lock_irqsave(&xfer->lock, flags);
wa = xfer->wa;
dev = &wa->usb_iface->dev;
rpipe = xfer->ep->hcpriv;
- d_printf(2, dev, "xfer %p#%u: data in done (%zu bytes)\n",
- xfer, seg->index, (size_t)urb->actual_length);
+ dev_dbg(dev, "xfer %p#%u: data in done (%zu bytes)\n",
+ xfer, seg->index, (size_t)urb->actual_length);
seg->status = WA_SEG_DONE;
seg->result = urb->actual_length;
xfer->segs_done++;
@@ -1514,7 +1428,6 @@
if (rpipe_ready)
wa_xfer_delayed_run(rpipe);
}
- d_fnend(3, NULL, "(urb %p [%d]) = void\n", urb, urb->status);
}
/*
@@ -1553,14 +1466,12 @@
struct wa_xfer *xfer;
u8 usb_status;
- d_fnstart(3, dev, "(%p)\n", wa);
BUG_ON(wa->dti_urb != urb);
switch (wa->dti_urb->status) {
case 0:
/* We have a xfer result buffer; check it */
- d_printf(2, dev, "DTI: xfer result %d bytes at %p\n",
- urb->actual_length, urb->transfer_buffer);
- d_dump(3, dev, urb->transfer_buffer, urb->actual_length);
+ dev_dbg(dev, "DTI: xfer result %d bytes at %p\n",
+ urb->actual_length, urb->transfer_buffer);
if (wa->dti_urb->actual_length != sizeof(*xfer_result)) {
dev_err(dev, "DTI Error: xfer result--bad size "
"xfer result (%d bytes vs %zu needed)\n",
@@ -1622,7 +1533,6 @@
wa_reset_all(wa);
}
out:
- d_fnend(3, dev, "(%p) = void\n", wa);
return;
}
@@ -1653,7 +1563,6 @@
struct wa_notif_xfer *notif_xfer;
const struct usb_endpoint_descriptor *dti_epd = wa->dti_epd;
- d_fnstart(4, dev, "(%p, %p)\n", wa, notif_hdr);
notif_xfer = container_of(notif_hdr, struct wa_notif_xfer, hdr);
BUG_ON(notif_hdr->bNotifyType != WA_NOTIF_TRANSFER);
@@ -1693,7 +1602,6 @@
goto error_dti_urb_submit;
}
out:
- d_fnend(4, dev, "(%p, %p) = void\n", wa, notif_hdr);
return;
error_dti_urb_submit:
@@ -1704,6 +1612,4 @@
error_dti_urb_alloc:
error:
wa_reset_all(wa);
- d_fnend(4, dev, "(%p, %p) = void\n", wa, notif_hdr);
- return;
}
diff --git a/drivers/usb/wusbcore/wusbhc.h b/drivers/usb/wusbcore/wusbhc.h
index d0c1324..797c245 100644
--- a/drivers/usb/wusbcore/wusbhc.h
+++ b/drivers/usb/wusbcore/wusbhc.h
@@ -64,6 +64,13 @@
#include <linux/uwb.h>
#include <linux/usb/wusb.h>
+/*
+ * Time from a WUSB channel stop request to the last transmitted MMC.
+ *
+ * This needs to be > 4.096 ms in case no MMCs can be transmitted in
+ * zone 0.
+ */
+#define WUSB_CHANNEL_STOP_DELAY_MS 8
/**
* Wireless USB device
@@ -147,7 +154,6 @@
u16 status;
u16 change;
struct wusb_dev *wusb_dev; /* connected device's info */
- unsigned reset_count;
u32 ptk_tkid;
};
@@ -198,21 +204,18 @@
* @mmcies_max Max number of Information Elements this HC can send
* in its MMC. Read-only.
*
+ * @start Start the WUSB channel.
+ *
+ * @stop Stop the WUSB channel after the specified number of
+ * milliseconds. Channel Stop IEs should be transmitted
+ * as required by [WUSB] 4.16.2.1.
+ *
* @mmcie_add HC specific operation (WHCI or HWA) for adding an
* MMCIE.
*
* @mmcie_rm HC specific operation (WHCI or HWA) for removing an
* MMCIE.
*
- * @enc_types Array which describes the encryptions methods
- * supported by the host as described in WUSB1.0 --
- * one entry per supported method. As of WUSB1.0 there
- * is only four methods, we make space for eight just in
- * case they decide to add some more (and pray they do
- * it in sequential order). if 'enc_types[enc_method]
- * != 0', then it is supported by the host. enc_method
- * is USB_ENC_TYPE*.
- *
* @set_ptk: Set the PTK and enable encryption for a device. Or, if
* the supplied key is NULL, disable encryption for that
* device.
@@ -249,7 +252,8 @@
struct uwb_pal pal;
unsigned trust_timeout; /* in jiffies */
- struct wuie_host_info *wuie_host_info; /* Includes CHID */
+ struct wusb_ckhdid chid;
+ struct wuie_host_info *wuie_host_info;
struct mutex mutex; /* locks everything else */
u16 cluster_id; /* Wireless USB Cluster ID */
@@ -269,7 +273,7 @@
u8 mmcies_max;
/* FIXME: make wusbhc_ops? */
int (*start)(struct wusbhc *wusbhc);
- void (*stop)(struct wusbhc *wusbhc);
+ void (*stop)(struct wusbhc *wusbhc, int delay);
int (*mmcie_add)(struct wusbhc *wusbhc, u8 interval, u8 repeat_cnt,
u8 handle, struct wuie_hdr *wuie);
int (*mmcie_rm)(struct wusbhc *wusbhc, u8 handle);
@@ -373,20 +377,17 @@
usb_put_hcd(&wusbhc->usb_hcd);
}
-int wusbhc_start(struct wusbhc *wusbhc, const struct wusb_ckhdid *chid);
+int wusbhc_start(struct wusbhc *wusbhc);
void wusbhc_stop(struct wusbhc *wusbhc);
extern int wusbhc_chid_set(struct wusbhc *, const struct wusb_ckhdid *);
/* Device connect handling */
extern int wusbhc_devconnect_create(struct wusbhc *);
extern void wusbhc_devconnect_destroy(struct wusbhc *);
-extern int wusbhc_devconnect_start(struct wusbhc *wusbhc,
- const struct wusb_ckhdid *chid);
+extern int wusbhc_devconnect_start(struct wusbhc *wusbhc);
extern void wusbhc_devconnect_stop(struct wusbhc *wusbhc);
-extern int wusbhc_devconnect_auth(struct wusbhc *, u8);
extern void wusbhc_handle_dn(struct wusbhc *, u8 srcaddr,
struct wusb_dn_hdr *dn_hdr, size_t size);
-extern int wusbhc_dev_reset(struct wusbhc *wusbhc, u8 port);
extern void __wusbhc_dev_disable(struct wusbhc *wusbhc, u8 port);
extern int wusb_usb_ncb(struct notifier_block *nb, unsigned long val,
void *priv);
@@ -432,6 +433,7 @@
extern int wusb_dev_4way_handshake(struct wusbhc *, struct wusb_dev *,
struct wusb_ckhdid *ck);
void wusbhc_gtk_rekey(struct wusbhc *wusbhc);
+int wusb_dev_update_address(struct wusbhc *wusbhc, struct wusb_dev *wusb_dev);
/* WUSB Cluster ID handling */
diff --git a/drivers/uwb/Makefile b/drivers/uwb/Makefile
index 257e690..2f98d08 100644
--- a/drivers/uwb/Makefile
+++ b/drivers/uwb/Makefile
@@ -6,6 +6,7 @@
uwb-objs := \
address.o \
+ allocator.o \
beacon.o \
driver.o \
drp.o \
@@ -13,10 +14,12 @@
drp-ie.o \
est.o \
ie.o \
+ ie-rcv.o \
lc-dev.o \
lc-rc.o \
neh.o \
pal.o \
+ radio.o \
reset.o \
rsv.o \
scan.o \
diff --git a/drivers/uwb/address.c b/drivers/uwb/address.c
index 1664ae5..ad21b1d 100644
--- a/drivers/uwb/address.c
+++ b/drivers/uwb/address.c
@@ -28,7 +28,7 @@
#include <linux/device.h>
#include <linux/random.h>
#include <linux/etherdevice.h>
-#include <linux/uwb/debug.h>
+
#include "uwb-internal.h"
diff --git a/drivers/uwb/allocator.c b/drivers/uwb/allocator.c
new file mode 100644
index 0000000..c8185e6
--- /dev/null
+++ b/drivers/uwb/allocator.c
@@ -0,0 +1,386 @@
+/*
+ * UWB reservation management.
+ *
+ * Copyright (C) 2008 Cambridge Silicon Radio Ltd.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <linux/version.h>
+#include <linux/kernel.h>
+#include <linux/uwb.h>
+
+#include "uwb-internal.h"
+
+static void uwb_rsv_fill_column_alloc(struct uwb_rsv_alloc_info *ai)
+{
+ int col, mas, safe_mas, unsafe_mas;
+ unsigned char *bm = ai->bm;
+ struct uwb_rsv_col_info *ci = ai->ci;
+ unsigned char c;
+
+ for (col = ci->csi.start_col; col < UWB_NUM_ZONES; col += ci->csi.interval) {
+
+ safe_mas = ci->csi.safe_mas_per_col;
+ unsafe_mas = ci->csi.unsafe_mas_per_col;
+
+ for (mas = 0; mas < UWB_MAS_PER_ZONE; mas++ ) {
+ if (bm[col * UWB_MAS_PER_ZONE + mas] == 0) {
+
+ if (safe_mas > 0) {
+ safe_mas--;
+ c = UWB_RSV_MAS_SAFE;
+ } else if (unsafe_mas > 0) {
+ unsafe_mas--;
+ c = UWB_RSV_MAS_UNSAFE;
+ } else {
+ break;
+ }
+ bm[col * UWB_MAS_PER_ZONE + mas] = c;
+ }
+ }
+ }
+}
+
+static void uwb_rsv_fill_row_alloc(struct uwb_rsv_alloc_info *ai)
+{
+ int mas, col, rows;
+ unsigned char *bm = ai->bm;
+ struct uwb_rsv_row_info *ri = &ai->ri;
+ unsigned char c;
+
+ rows = 1;
+ c = UWB_RSV_MAS_SAFE;
+ for (mas = UWB_MAS_PER_ZONE - 1; mas >= 0; mas--) {
+ if (ri->avail[mas] == 1) {
+
+ if (rows > ri->used_rows) {
+ break;
+ } else if (rows > 7) {
+ c = UWB_RSV_MAS_UNSAFE;
+ }
+
+ for (col = 0; col < UWB_NUM_ZONES; col++) {
+ if (bm[col * UWB_NUM_ZONES + mas] != UWB_RSV_MAS_NOT_AVAIL) {
+ bm[col * UWB_NUM_ZONES + mas] = c;
+ if(c == UWB_RSV_MAS_SAFE)
+ ai->safe_allocated_mases++;
+ else
+ ai->unsafe_allocated_mases++;
+ }
+ }
+ rows++;
+ }
+ }
+ ai->total_allocated_mases = ai->safe_allocated_mases + ai->unsafe_allocated_mases;
+}
+
+/*
+ * Find the best column set for a given availability, interval, num safe mas and
+ * num unsafe mas.
+ *
+ * The different sets are tried in order as shown below, depending on the interval.
+ *
+ * interval = 16
+ * deep = 0
+ * set 1 -> { 8 }
+ * deep = 1
+ * set 1 -> { 4 }
+ * set 2 -> { 12 }
+ * deep = 2
+ * set 1 -> { 2 }
+ * set 2 -> { 6 }
+ * set 3 -> { 10 }
+ * set 4 -> { 14 }
+ * deep = 3
+ * set 1 -> { 1 }
+ * set 2 -> { 3 }
+ * set 3 -> { 5 }
+ * set 4 -> { 7 }
+ * set 5 -> { 9 }
+ * set 6 -> { 11 }
+ * set 7 -> { 13 }
+ * set 8 -> { 15 }
+ *
+ * interval = 8
+ * deep = 0
+ * set 1 -> { 4 12 }
+ * deep = 1
+ * set 1 -> { 2 10 }
+ * set 2 -> { 6 14 }
+ * deep = 2
+ * set 1 -> { 1 9 }
+ * set 2 -> { 3 11 }
+ * set 3 -> { 5 13 }
+ * set 4 -> { 7 15 }
+ *
+ * interval = 4
+ * deep = 0
+ * set 1 -> { 2 6 10 14 }
+ * deep = 1
+ * set 1 -> { 1 5 9 13 }
+ * set 2 -> { 3 7 11 15 }
+ *
+ * interval = 2
+ * deep = 0
+ * set 1 -> { 1 3 5 7 9 11 13 15 }
+ */
+static int uwb_rsv_find_best_column_set(struct uwb_rsv_alloc_info *ai, int interval,
+ int num_safe_mas, int num_unsafe_mas)
+{
+ struct uwb_rsv_col_info *ci = ai->ci;
+ struct uwb_rsv_col_set_info *csi = &ci->csi;
+ struct uwb_rsv_col_set_info tmp_csi;
+ int deep, set, col, start_col_deep, col_start_set;
+ int start_col, max_mas_in_set, lowest_max_mas_in_deep;
+ int n_mas;
+ int found = UWB_RSV_ALLOC_NOT_FOUND;
+
+ tmp_csi.start_col = 0;
+ start_col_deep = interval;
+ n_mas = num_unsafe_mas + num_safe_mas;
+
+ for (deep = 0; ((interval >> deep) & 0x1) == 0; deep++) {
+ start_col_deep /= 2;
+ col_start_set = 0;
+ lowest_max_mas_in_deep = UWB_MAS_PER_ZONE;
+
+ for (set = 1; set <= (1 << deep); set++) {
+ max_mas_in_set = 0;
+ start_col = start_col_deep + col_start_set;
+ for (col = start_col; col < UWB_NUM_ZONES; col += interval) {
+
+ if (ci[col].max_avail_safe >= num_safe_mas &&
+ ci[col].max_avail_unsafe >= n_mas) {
+ if (ci[col].highest_mas[n_mas] > max_mas_in_set)
+ max_mas_in_set = ci[col].highest_mas[n_mas];
+ } else {
+ max_mas_in_set = 0;
+ break;
+ }
+ }
+ if ((lowest_max_mas_in_deep > max_mas_in_set) && max_mas_in_set) {
+ lowest_max_mas_in_deep = max_mas_in_set;
+
+ tmp_csi.start_col = start_col;
+ }
+ col_start_set += (interval >> deep);
+ }
+
+ if (lowest_max_mas_in_deep < 8) {
+ csi->start_col = tmp_csi.start_col;
+ found = UWB_RSV_ALLOC_FOUND;
+ break;
+ } else if ((lowest_max_mas_in_deep > 8) &&
+ (lowest_max_mas_in_deep != UWB_MAS_PER_ZONE) &&
+ (found == UWB_RSV_ALLOC_NOT_FOUND)) {
+ csi->start_col = tmp_csi.start_col;
+ found = UWB_RSV_ALLOC_FOUND;
+ }
+ }
+
+ if (found == UWB_RSV_ALLOC_FOUND) {
+ csi->interval = interval;
+ csi->safe_mas_per_col = num_safe_mas;
+ csi->unsafe_mas_per_col = num_unsafe_mas;
+
+ ai->safe_allocated_mases = (UWB_NUM_ZONES / interval) * num_safe_mas;
+ ai->unsafe_allocated_mases = (UWB_NUM_ZONES / interval) * num_unsafe_mas;
+ ai->total_allocated_mases = ai->safe_allocated_mases + ai->unsafe_allocated_mases;
+ ai->interval = interval;
+ }
+ return found;
+}
+
+static void get_row_descriptors(struct uwb_rsv_alloc_info *ai)
+{
+ unsigned char *bm = ai->bm;
+ struct uwb_rsv_row_info *ri = &ai->ri;
+ int col, mas;
+
+ ri->free_rows = 16;
+ for (mas = 0; mas < UWB_MAS_PER_ZONE; mas ++) {
+ ri->avail[mas] = 1;
+ for (col = 1; col < UWB_NUM_ZONES; col++) {
+ if (bm[col * UWB_NUM_ZONES + mas] == UWB_RSV_MAS_NOT_AVAIL) {
+ ri->free_rows--;
+ ri->avail[mas]=0;
+ break;
+ }
+ }
+ }
+}
+
+static void uwb_rsv_fill_column_info(unsigned char *bm, int column, struct uwb_rsv_col_info *rci)
+{
+ int mas;
+ int block_count = 0, start_block = 0;
+ int previous_avail = 0;
+ int available = 0;
+ int safe_mas_in_row[UWB_MAS_PER_ZONE] = {
+ 8, 7, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1,
+ };
+
+ rci->max_avail_safe = 0;
+
+ for (mas = 0; mas < UWB_MAS_PER_ZONE; mas ++) {
+ if (!bm[column * UWB_NUM_ZONES + mas]) {
+ available++;
+ rci->max_avail_unsafe = available;
+
+ rci->highest_mas[available] = mas;
+
+ if (previous_avail) {
+ block_count++;
+ if ((block_count > safe_mas_in_row[start_block]) &&
+ (!rci->max_avail_safe))
+ rci->max_avail_safe = available - 1;
+ } else {
+ previous_avail = 1;
+ start_block = mas;
+ block_count = 1;
+ }
+ } else {
+ previous_avail = 0;
+ }
+ }
+ if (!rci->max_avail_safe)
+ rci->max_avail_safe = rci->max_avail_unsafe;
+}
+
+static void get_column_descriptors(struct uwb_rsv_alloc_info *ai)
+{
+ unsigned char *bm = ai->bm;
+ struct uwb_rsv_col_info *ci = ai->ci;
+ int col;
+
+ for (col = 1; col < UWB_NUM_ZONES; col++) {
+ uwb_rsv_fill_column_info(bm, col, &ci[col]);
+ }
+}
+
+static int uwb_rsv_find_best_row_alloc(struct uwb_rsv_alloc_info *ai)
+{
+ int n_rows;
+ int max_rows = ai->max_mas / UWB_USABLE_MAS_PER_ROW;
+ int min_rows = ai->min_mas / UWB_USABLE_MAS_PER_ROW;
+ if (ai->min_mas % UWB_USABLE_MAS_PER_ROW)
+ min_rows++;
+ for (n_rows = max_rows; n_rows >= min_rows; n_rows--) {
+ if (n_rows <= ai->ri.free_rows) {
+ ai->ri.used_rows = n_rows;
+ ai->interval = 1; /* row reservation */
+ uwb_rsv_fill_row_alloc(ai);
+ return UWB_RSV_ALLOC_FOUND;
+ }
+ }
+ return UWB_RSV_ALLOC_NOT_FOUND;
+}
+
+static int uwb_rsv_find_best_col_alloc(struct uwb_rsv_alloc_info *ai, int interval)
+{
+ int n_safe, n_unsafe, n_mas;
+ int n_column = UWB_NUM_ZONES / interval;
+ int max_per_zone = ai->max_mas / n_column;
+ int min_per_zone = ai->min_mas / n_column;
+
+ if (ai->min_mas % n_column)
+ min_per_zone++;
+
+ if (min_per_zone > UWB_MAS_PER_ZONE) {
+ return UWB_RSV_ALLOC_NOT_FOUND;
+ }
+
+ if (max_per_zone > UWB_MAS_PER_ZONE) {
+ max_per_zone = UWB_MAS_PER_ZONE;
+ }
+
+ for (n_mas = max_per_zone; n_mas >= min_per_zone; n_mas--) {
+ if (uwb_rsv_find_best_column_set(ai, interval, 0, n_mas) == UWB_RSV_ALLOC_NOT_FOUND)
+ continue;
+ for (n_safe = n_mas; n_safe >= 0; n_safe--) {
+ n_unsafe = n_mas - n_safe;
+ if (uwb_rsv_find_best_column_set(ai, interval, n_safe, n_unsafe) == UWB_RSV_ALLOC_FOUND) {
+ uwb_rsv_fill_column_alloc(ai);
+ return UWB_RSV_ALLOC_FOUND;
+ }
+ }
+ }
+ return UWB_RSV_ALLOC_NOT_FOUND;
+}
+
+int uwb_rsv_find_best_allocation(struct uwb_rsv *rsv, struct uwb_mas_bm *available,
+ struct uwb_mas_bm *result)
+{
+ struct uwb_rsv_alloc_info *ai;
+ int interval;
+ int bit_index;
+
+ ai = kzalloc(sizeof(struct uwb_rsv_alloc_info), GFP_KERNEL);
+
+ ai->min_mas = rsv->min_mas;
+ ai->max_mas = rsv->max_mas;
+ ai->max_interval = rsv->max_interval;
+
+
+ /* fill the not available vector from the available bm */
+ for (bit_index = 0; bit_index < UWB_NUM_MAS; bit_index++) {
+ if (!test_bit(bit_index, available->bm))
+ ai->bm[bit_index] = UWB_RSV_MAS_NOT_AVAIL;
+ }
+
+ if (ai->max_interval == 1) {
+ get_row_descriptors(ai);
+ if (uwb_rsv_find_best_row_alloc(ai) == UWB_RSV_ALLOC_FOUND)
+ goto alloc_found;
+ else
+ goto alloc_not_found;
+ }
+
+ get_column_descriptors(ai);
+
+ for (interval = 16; interval >= 2; interval>>=1) {
+ if (interval > ai->max_interval)
+ continue;
+ if (uwb_rsv_find_best_col_alloc(ai, interval) == UWB_RSV_ALLOC_FOUND)
+ goto alloc_found;
+ }
+
+ /* try row reservation if no column is found */
+ get_row_descriptors(ai);
+ if (uwb_rsv_find_best_row_alloc(ai) == UWB_RSV_ALLOC_FOUND)
+ goto alloc_found;
+ else
+ goto alloc_not_found;
+
+ alloc_found:
+ bitmap_zero(result->bm, UWB_NUM_MAS);
+ bitmap_zero(result->unsafe_bm, UWB_NUM_MAS);
+ /* fill the safe and unsafe bitmaps */
+ for (bit_index = 0; bit_index < UWB_NUM_MAS; bit_index++) {
+ if (ai->bm[bit_index] == UWB_RSV_MAS_SAFE)
+ set_bit(bit_index, result->bm);
+ else if (ai->bm[bit_index] == UWB_RSV_MAS_UNSAFE)
+ set_bit(bit_index, result->unsafe_bm);
+ }
+ bitmap_or(result->bm, result->bm, result->unsafe_bm, UWB_NUM_MAS);
+
+ result->safe = ai->safe_allocated_mases;
+ result->unsafe = ai->unsafe_allocated_mases;
+
+ kfree(ai);
+ return UWB_RSV_ALLOC_FOUND;
+
+ alloc_not_found:
+ kfree(ai);
+ return UWB_RSV_ALLOC_NOT_FOUND;
+}
diff --git a/drivers/uwb/beacon.c b/drivers/uwb/beacon.c
index 46b18ee..36bc315 100644
--- a/drivers/uwb/beacon.c
+++ b/drivers/uwb/beacon.c
@@ -22,19 +22,16 @@
*
* FIXME: docs
*/
-
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/device.h>
#include <linux/err.h>
#include <linux/kdev_t.h>
+
#include "uwb-internal.h"
-#define D_LOCAL 0
-#include <linux/uwb/debug.h>
-
-/** Start Beaconing command structure */
+/* Start Beaconing command structure */
struct uwb_rc_cmd_start_beacon {
struct uwb_rccb rccb;
__le16 wBPSTOffset;
@@ -119,7 +116,6 @@
int result;
struct device *dev = &rc->uwb_dev.dev;
- mutex_lock(&rc->uwb_dev.mutex);
if (channel < 0)
channel = -1;
if (channel == -1)
@@ -128,7 +124,7 @@
/* channel >= 0...dah */
result = uwb_rc_start_beacon(rc, bpst_offset, channel);
if (result < 0)
- goto out_up;
+ return result;
if (le16_to_cpu(rc->ies->wIELength) > 0) {
result = uwb_rc_set_ie(rc, rc->ies);
if (result < 0) {
@@ -137,19 +133,12 @@
result = uwb_rc_stop_beacon(rc);
channel = -1;
bpst_offset = 0;
- } else
- result = 0;
+ }
}
}
- if (result < 0)
- goto out_up;
- rc->beaconing = channel;
-
- uwb_notify(rc, NULL, uwb_bg_joined(rc) ? UWB_NOTIF_BG_JOIN : UWB_NOTIF_BG_LEAVE);
-
-out_up:
- mutex_unlock(&rc->uwb_dev.mutex);
+ if (result >= 0)
+ rc->beaconing = channel;
return result;
}
@@ -168,12 +157,6 @@
* FIXME: use something faster for search than a list
*/
-struct uwb_beca uwb_beca = {
- .list = LIST_HEAD_INIT(uwb_beca.list),
- .mutex = __MUTEX_INITIALIZER(uwb_beca.mutex)
-};
-
-
void uwb_bce_kfree(struct kref *_bce)
{
struct uwb_beca_e *bce = container_of(_bce, struct uwb_beca_e, refcnt);
@@ -185,13 +168,11 @@
/* Find a beacon by dev addr in the cache */
static
-struct uwb_beca_e *__uwb_beca_find_bydev(const struct uwb_dev_addr *dev_addr)
+struct uwb_beca_e *__uwb_beca_find_bydev(struct uwb_rc *rc,
+ const struct uwb_dev_addr *dev_addr)
{
struct uwb_beca_e *bce, *next;
- list_for_each_entry_safe(bce, next, &uwb_beca.list, node) {
- d_printf(6, NULL, "looking for addr %02x:%02x in %02x:%02x\n",
- dev_addr->data[0], dev_addr->data[1],
- bce->dev_addr.data[0], bce->dev_addr.data[1]);
+ list_for_each_entry_safe(bce, next, &rc->uwb_beca.list, node) {
if (!memcmp(&bce->dev_addr, dev_addr, sizeof(bce->dev_addr)))
goto out;
}
@@ -202,10 +183,11 @@
/* Find a beacon by dev addr in the cache */
static
-struct uwb_beca_e *__uwb_beca_find_bymac(const struct uwb_mac_addr *mac_addr)
+struct uwb_beca_e *__uwb_beca_find_bymac(struct uwb_rc *rc,
+ const struct uwb_mac_addr *mac_addr)
{
struct uwb_beca_e *bce, *next;
- list_for_each_entry_safe(bce, next, &uwb_beca.list, node) {
+ list_for_each_entry_safe(bce, next, &rc->uwb_beca.list, node) {
if (!memcmp(bce->mac_addr, mac_addr->data,
sizeof(struct uwb_mac_addr)))
goto out;
@@ -229,11 +211,11 @@
struct uwb_dev *found = NULL;
struct uwb_beca_e *bce;
- mutex_lock(&uwb_beca.mutex);
- bce = __uwb_beca_find_bydev(devaddr);
+ mutex_lock(&rc->uwb_beca.mutex);
+ bce = __uwb_beca_find_bydev(rc, devaddr);
if (bce)
found = uwb_dev_try_get(rc, bce->uwb_dev);
- mutex_unlock(&uwb_beca.mutex);
+ mutex_unlock(&rc->uwb_beca.mutex);
return found;
}
@@ -249,11 +231,11 @@
struct uwb_dev *found = NULL;
struct uwb_beca_e *bce;
- mutex_lock(&uwb_beca.mutex);
- bce = __uwb_beca_find_bymac(macaddr);
+ mutex_lock(&rc->uwb_beca.mutex);
+ bce = __uwb_beca_find_bymac(rc, macaddr);
if (bce)
found = uwb_dev_try_get(rc, bce->uwb_dev);
- mutex_unlock(&uwb_beca.mutex);
+ mutex_unlock(&rc->uwb_beca.mutex);
return found;
}
@@ -274,7 +256,9 @@
* @bf: Beacon frame (part of b, really)
* @ts_jiffies: Timestamp (in jiffies) when the beacon was received
*/
-struct uwb_beca_e *__uwb_beca_add(struct uwb_rc_evt_beacon *be,
+static
+struct uwb_beca_e *__uwb_beca_add(struct uwb_rc *rc,
+ struct uwb_rc_evt_beacon *be,
struct uwb_beacon_frame *bf,
unsigned long ts_jiffies)
{
@@ -286,7 +270,7 @@
uwb_beca_e_init(bce);
bce->ts_jiffies = ts_jiffies;
bce->uwb_dev = NULL;
- list_add(&bce->node, &uwb_beca.list);
+ list_add(&bce->node, &rc->uwb_beca.list);
return bce;
}
@@ -295,33 +279,32 @@
*
* Remove associated devicest too.
*/
-void uwb_beca_purge(void)
+void uwb_beca_purge(struct uwb_rc *rc)
{
struct uwb_beca_e *bce, *next;
unsigned long expires;
- mutex_lock(&uwb_beca.mutex);
- list_for_each_entry_safe(bce, next, &uwb_beca.list, node) {
+ mutex_lock(&rc->uwb_beca.mutex);
+ list_for_each_entry_safe(bce, next, &rc->uwb_beca.list, node) {
expires = bce->ts_jiffies + msecs_to_jiffies(beacon_timeout_ms);
if (time_after(jiffies, expires)) {
uwbd_dev_offair(bce);
- list_del(&bce->node);
- uwb_bce_put(bce);
}
}
- mutex_unlock(&uwb_beca.mutex);
+ mutex_unlock(&rc->uwb_beca.mutex);
}
/* Clean up the whole beacon cache. Called on shutdown */
-void uwb_beca_release(void)
+void uwb_beca_release(struct uwb_rc *rc)
{
struct uwb_beca_e *bce, *next;
- mutex_lock(&uwb_beca.mutex);
- list_for_each_entry_safe(bce, next, &uwb_beca.list, node) {
+
+ mutex_lock(&rc->uwb_beca.mutex);
+ list_for_each_entry_safe(bce, next, &rc->uwb_beca.list, node) {
list_del(&bce->node);
uwb_bce_put(bce);
}
- mutex_unlock(&uwb_beca.mutex);
+ mutex_unlock(&rc->uwb_beca.mutex);
}
static void uwb_beacon_print(struct uwb_rc *rc, struct uwb_rc_evt_beacon *be,
@@ -349,22 +332,22 @@
ssize_t result = 0;
struct uwb_rc_evt_beacon *be;
struct uwb_beacon_frame *bf;
- struct uwb_buf_ctx ctx = {
- .buf = buf,
- .bytes = 0,
- .size = size
- };
+ int ies_len;
+ struct uwb_ie_hdr *ies;
mutex_lock(&bce->mutex);
+
be = bce->be;
- if (be == NULL)
- goto out;
- bf = (void *) be->BeaconInfo;
- uwb_ie_for_each(uwb_dev, uwb_ie_dump_hex, &ctx,
- bf->IEData, be->wBeaconInfoLength - sizeof(*bf));
- result = ctx.bytes;
-out:
+ if (be) {
+ bf = (struct uwb_beacon_frame *)bce->be->BeaconInfo;
+ ies_len = be->wBeaconInfoLength - sizeof(struct uwb_beacon_frame);
+ ies = (struct uwb_ie_hdr *)bf->IEData;
+
+ result = uwb_ie_dump_hex(ies, ies_len, buf, size);
+ }
+
mutex_unlock(&bce->mutex);
+
return result;
}
@@ -437,18 +420,18 @@
if (uwb_mac_addr_bcast(&bf->Device_Identifier))
return 0;
- mutex_lock(&uwb_beca.mutex);
- bce = __uwb_beca_find_bymac(&bf->Device_Identifier);
+ mutex_lock(&rc->uwb_beca.mutex);
+ bce = __uwb_beca_find_bymac(rc, &bf->Device_Identifier);
if (bce == NULL) {
/* Not in there, a new device is pinging */
uwb_beacon_print(evt->rc, be, bf);
- bce = __uwb_beca_add(be, bf, evt->ts_jiffies);
+ bce = __uwb_beca_add(rc, be, bf, evt->ts_jiffies);
if (bce == NULL) {
- mutex_unlock(&uwb_beca.mutex);
+ mutex_unlock(&rc->uwb_beca.mutex);
return -ENOMEM;
}
}
- mutex_unlock(&uwb_beca.mutex);
+ mutex_unlock(&rc->uwb_beca.mutex);
mutex_lock(&bce->mutex);
/* purge old beacon data */
@@ -588,19 +571,6 @@
return result;
}
-/**
- * uwb_bg_joined - is the RC in a beacon group?
- * @rc: the radio controller
- *
- * Returns true if the radio controller is in a beacon group (even if
- * it's the sole member).
- */
-int uwb_bg_joined(struct uwb_rc *rc)
-{
- return rc->beaconing != -1;
-}
-EXPORT_SYMBOL_GPL(uwb_bg_joined);
-
/*
* Print beaconing state.
*/
@@ -619,9 +589,6 @@
/*
* Start beaconing on the specified channel, or stop beaconing.
- *
- * The BPST offset of when to start searching for a beacon group to
- * join may be specified.
*/
static ssize_t uwb_rc_beacon_store(struct device *dev,
struct device_attribute *attr,
@@ -630,12 +597,11 @@
struct uwb_dev *uwb_dev = to_uwb_dev(dev);
struct uwb_rc *rc = uwb_dev->rc;
int channel;
- unsigned bpst_offset = 0;
ssize_t result = -EINVAL;
- result = sscanf(buf, "%d %u\n", &channel, &bpst_offset);
+ result = sscanf(buf, "%d", &channel);
if (result >= 1)
- result = uwb_rc_beacon(rc, channel, bpst_offset);
+ result = uwb_radio_force_channel(rc, channel);
return result < 0 ? result : size;
}
diff --git a/drivers/uwb/driver.c b/drivers/uwb/driver.c
index 521cdeb..da77e41 100644
--- a/drivers/uwb/driver.c
+++ b/drivers/uwb/driver.c
@@ -53,7 +53,7 @@
#include <linux/err.h>
#include <linux/kdev_t.h>
#include <linux/random.h>
-#include <linux/uwb/debug.h>
+
#include "uwb-internal.h"
@@ -118,7 +118,6 @@
result = class_register(&uwb_rc_class);
if (result < 0)
goto error_uwb_rc_class_register;
- uwbd_start();
uwb_dbg_init();
return 0;
@@ -132,7 +131,6 @@
static void __exit uwb_subsys_exit(void)
{
uwb_dbg_exit();
- uwbd_stop();
class_unregister(&uwb_rc_class);
uwb_est_destroy();
return;
diff --git a/drivers/uwb/drp-avail.c b/drivers/uwb/drp-avail.c
index 3febd85..40a540a 100644
--- a/drivers/uwb/drp-avail.c
+++ b/drivers/uwb/drp-avail.c
@@ -58,7 +58,7 @@
*
* avail = global & local & pending
*/
-static void uwb_drp_available(struct uwb_rc *rc, struct uwb_mas_bm *avail)
+void uwb_drp_available(struct uwb_rc *rc, struct uwb_mas_bm *avail)
{
bitmap_and(avail->bm, rc->drp_avail.global, rc->drp_avail.local, UWB_NUM_MAS);
bitmap_and(avail->bm, avail->bm, rc->drp_avail.pending, UWB_NUM_MAS);
@@ -105,6 +105,7 @@
bitmap_or(rc->drp_avail.local, rc->drp_avail.local, mas->bm, UWB_NUM_MAS);
bitmap_or(rc->drp_avail.pending, rc->drp_avail.pending, mas->bm, UWB_NUM_MAS);
rc->drp_avail.ie_valid = false;
+ uwb_rsv_handle_drp_avail_change(rc);
}
/**
@@ -280,6 +281,7 @@
mutex_lock(&rc->rsvs_mutex);
bitmap_copy(rc->drp_avail.global, bmp, UWB_NUM_MAS);
rc->drp_avail.ie_valid = false;
+ uwb_rsv_handle_drp_avail_change(rc);
mutex_unlock(&rc->rsvs_mutex);
uwb_rsv_sched_update(rc);
diff --git a/drivers/uwb/drp-ie.c b/drivers/uwb/drp-ie.c
index 882724c..2840d7b 100644
--- a/drivers/uwb/drp-ie.c
+++ b/drivers/uwb/drp-ie.c
@@ -16,13 +16,102 @@
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
-#include <linux/version.h>
#include <linux/kernel.h>
#include <linux/random.h>
#include <linux/uwb.h>
#include "uwb-internal.h"
+
+/*
+ * Return the reason code for a reservations's DRP IE.
+ */
+int uwb_rsv_reason_code(struct uwb_rsv *rsv)
+{
+ static const int reason_codes[] = {
+ [UWB_RSV_STATE_O_INITIATED] = UWB_DRP_REASON_ACCEPTED,
+ [UWB_RSV_STATE_O_PENDING] = UWB_DRP_REASON_ACCEPTED,
+ [UWB_RSV_STATE_O_MODIFIED] = UWB_DRP_REASON_MODIFIED,
+ [UWB_RSV_STATE_O_ESTABLISHED] = UWB_DRP_REASON_ACCEPTED,
+ [UWB_RSV_STATE_O_TO_BE_MOVED] = UWB_DRP_REASON_ACCEPTED,
+ [UWB_RSV_STATE_O_MOVE_COMBINING] = UWB_DRP_REASON_MODIFIED,
+ [UWB_RSV_STATE_O_MOVE_REDUCING] = UWB_DRP_REASON_MODIFIED,
+ [UWB_RSV_STATE_O_MOVE_EXPANDING] = UWB_DRP_REASON_ACCEPTED,
+ [UWB_RSV_STATE_T_ACCEPTED] = UWB_DRP_REASON_ACCEPTED,
+ [UWB_RSV_STATE_T_CONFLICT] = UWB_DRP_REASON_CONFLICT,
+ [UWB_RSV_STATE_T_PENDING] = UWB_DRP_REASON_PENDING,
+ [UWB_RSV_STATE_T_DENIED] = UWB_DRP_REASON_DENIED,
+ [UWB_RSV_STATE_T_RESIZED] = UWB_DRP_REASON_ACCEPTED,
+ [UWB_RSV_STATE_T_EXPANDING_ACCEPTED] = UWB_DRP_REASON_ACCEPTED,
+ [UWB_RSV_STATE_T_EXPANDING_CONFLICT] = UWB_DRP_REASON_CONFLICT,
+ [UWB_RSV_STATE_T_EXPANDING_PENDING] = UWB_DRP_REASON_PENDING,
+ [UWB_RSV_STATE_T_EXPANDING_DENIED] = UWB_DRP_REASON_DENIED,
+ };
+
+ return reason_codes[rsv->state];
+}
+
+/*
+ * Return the reason code for a reservations's companion DRP IE .
+ */
+int uwb_rsv_companion_reason_code(struct uwb_rsv *rsv)
+{
+ static const int companion_reason_codes[] = {
+ [UWB_RSV_STATE_O_MOVE_EXPANDING] = UWB_DRP_REASON_ACCEPTED,
+ [UWB_RSV_STATE_T_EXPANDING_ACCEPTED] = UWB_DRP_REASON_ACCEPTED,
+ [UWB_RSV_STATE_T_EXPANDING_CONFLICT] = UWB_DRP_REASON_CONFLICT,
+ [UWB_RSV_STATE_T_EXPANDING_PENDING] = UWB_DRP_REASON_PENDING,
+ [UWB_RSV_STATE_T_EXPANDING_DENIED] = UWB_DRP_REASON_DENIED,
+ };
+
+ return companion_reason_codes[rsv->state];
+}
+
+/*
+ * Return the status bit for a reservations's DRP IE.
+ */
+int uwb_rsv_status(struct uwb_rsv *rsv)
+{
+ static const int statuses[] = {
+ [UWB_RSV_STATE_O_INITIATED] = 0,
+ [UWB_RSV_STATE_O_PENDING] = 0,
+ [UWB_RSV_STATE_O_MODIFIED] = 1,
+ [UWB_RSV_STATE_O_ESTABLISHED] = 1,
+ [UWB_RSV_STATE_O_TO_BE_MOVED] = 0,
+ [UWB_RSV_STATE_O_MOVE_COMBINING] = 1,
+ [UWB_RSV_STATE_O_MOVE_REDUCING] = 1,
+ [UWB_RSV_STATE_O_MOVE_EXPANDING] = 1,
+ [UWB_RSV_STATE_T_ACCEPTED] = 1,
+ [UWB_RSV_STATE_T_CONFLICT] = 0,
+ [UWB_RSV_STATE_T_PENDING] = 0,
+ [UWB_RSV_STATE_T_DENIED] = 0,
+ [UWB_RSV_STATE_T_RESIZED] = 1,
+ [UWB_RSV_STATE_T_EXPANDING_ACCEPTED] = 1,
+ [UWB_RSV_STATE_T_EXPANDING_CONFLICT] = 1,
+ [UWB_RSV_STATE_T_EXPANDING_PENDING] = 1,
+ [UWB_RSV_STATE_T_EXPANDING_DENIED] = 1,
+
+ };
+
+ return statuses[rsv->state];
+}
+
+/*
+ * Return the status bit for a reservations's companion DRP IE .
+ */
+int uwb_rsv_companion_status(struct uwb_rsv *rsv)
+{
+ static const int companion_statuses[] = {
+ [UWB_RSV_STATE_O_MOVE_EXPANDING] = 0,
+ [UWB_RSV_STATE_T_EXPANDING_ACCEPTED] = 1,
+ [UWB_RSV_STATE_T_EXPANDING_CONFLICT] = 0,
+ [UWB_RSV_STATE_T_EXPANDING_PENDING] = 0,
+ [UWB_RSV_STATE_T_EXPANDING_DENIED] = 0,
+ };
+
+ return companion_statuses[rsv->state];
+}
+
/*
* Allocate a DRP IE.
*
@@ -34,16 +123,12 @@
static struct uwb_ie_drp *uwb_drp_ie_alloc(void)
{
struct uwb_ie_drp *drp_ie;
- unsigned tiebreaker;
drp_ie = kzalloc(sizeof(struct uwb_ie_drp) +
UWB_NUM_ZONES * sizeof(struct uwb_drp_alloc),
GFP_KERNEL);
if (drp_ie) {
drp_ie->hdr.element_id = UWB_IE_DRP;
-
- get_random_bytes(&tiebreaker, sizeof(unsigned));
- uwb_ie_drp_set_tiebreaker(drp_ie, tiebreaker & 1);
}
return drp_ie;
}
@@ -104,43 +189,17 @@
*/
int uwb_drp_ie_update(struct uwb_rsv *rsv)
{
- struct device *dev = &rsv->rc->uwb_dev.dev;
struct uwb_ie_drp *drp_ie;
- int reason_code, status;
+ struct uwb_rsv_move *mv;
+ int unsafe;
- switch (rsv->state) {
- case UWB_RSV_STATE_NONE:
+ if (rsv->state == UWB_RSV_STATE_NONE) {
kfree(rsv->drp_ie);
rsv->drp_ie = NULL;
return 0;
- case UWB_RSV_STATE_O_INITIATED:
- reason_code = UWB_DRP_REASON_ACCEPTED;
- status = 0;
- break;
- case UWB_RSV_STATE_O_PENDING:
- reason_code = UWB_DRP_REASON_ACCEPTED;
- status = 0;
- break;
- case UWB_RSV_STATE_O_MODIFIED:
- reason_code = UWB_DRP_REASON_MODIFIED;
- status = 1;
- break;
- case UWB_RSV_STATE_O_ESTABLISHED:
- reason_code = UWB_DRP_REASON_ACCEPTED;
- status = 1;
- break;
- case UWB_RSV_STATE_T_ACCEPTED:
- reason_code = UWB_DRP_REASON_ACCEPTED;
- status = 1;
- break;
- case UWB_RSV_STATE_T_DENIED:
- reason_code = UWB_DRP_REASON_DENIED;
- status = 0;
- break;
- default:
- dev_dbg(dev, "rsv with unhandled state (%d)\n", rsv->state);
- return -EINVAL;
}
+
+ unsafe = rsv->mas.unsafe ? 1 : 0;
if (rsv->drp_ie == NULL) {
rsv->drp_ie = uwb_drp_ie_alloc();
@@ -149,9 +208,11 @@
}
drp_ie = rsv->drp_ie;
+ uwb_ie_drp_set_unsafe(drp_ie, unsafe);
+ uwb_ie_drp_set_tiebreaker(drp_ie, rsv->tiebreaker);
uwb_ie_drp_set_owner(drp_ie, uwb_rsv_is_owner(rsv));
- uwb_ie_drp_set_status(drp_ie, status);
- uwb_ie_drp_set_reason_code(drp_ie, reason_code);
+ uwb_ie_drp_set_status(drp_ie, uwb_rsv_status(rsv));
+ uwb_ie_drp_set_reason_code(drp_ie, uwb_rsv_reason_code(rsv));
uwb_ie_drp_set_stream_index(drp_ie, rsv->stream);
uwb_ie_drp_set_type(drp_ie, rsv->type);
@@ -169,6 +230,27 @@
uwb_drp_ie_from_bm(drp_ie, &rsv->mas);
+ if (uwb_rsv_has_two_drp_ies(rsv)) {
+ mv = &rsv->mv;
+ if (mv->companion_drp_ie == NULL) {
+ mv->companion_drp_ie = uwb_drp_ie_alloc();
+ if (mv->companion_drp_ie == NULL)
+ return -ENOMEM;
+ }
+ drp_ie = mv->companion_drp_ie;
+
+ /* keep all the same configuration of the main drp_ie */
+ memcpy(drp_ie, rsv->drp_ie, sizeof(struct uwb_ie_drp));
+
+
+ /* FIXME: handle properly the unsafe bit */
+ uwb_ie_drp_set_unsafe(drp_ie, 1);
+ uwb_ie_drp_set_status(drp_ie, uwb_rsv_companion_status(rsv));
+ uwb_ie_drp_set_reason_code(drp_ie, uwb_rsv_companion_reason_code(rsv));
+
+ uwb_drp_ie_from_bm(drp_ie, &mv->companion_mas);
+ }
+
rsv->ie_valid = true;
return 0;
}
@@ -219,6 +301,8 @@
u8 zone;
u16 zone_mask;
+ bitmap_zero(bm->bm, UWB_NUM_MAS);
+
for (cnt = 0; cnt < numallocs; cnt++) {
alloc = &drp_ie->allocs[cnt];
zone_bm = le16_to_cpu(alloc->zone_bm);
@@ -230,3 +314,4 @@
}
}
}
+
diff --git a/drivers/uwb/drp.c b/drivers/uwb/drp.c
index c0b1e5e..2b4f940 100644
--- a/drivers/uwb/drp.c
+++ b/drivers/uwb/drp.c
@@ -23,6 +23,59 @@
#include <linux/delay.h>
#include "uwb-internal.h"
+
+/* DRP Conflict Actions ([ECMA-368 2nd Edition] 17.4.6) */
+enum uwb_drp_conflict_action {
+ /* Reservation is mantained, no action needed */
+ UWB_DRP_CONFLICT_MANTAIN = 0,
+
+ /* the device shall not transmit frames in conflicting MASs in
+ * the following superframe. If the device is the reservation
+ * target, it shall also set the Reason Code in its DRP IE to
+ * Conflict in its beacon in the following superframe.
+ */
+ UWB_DRP_CONFLICT_ACT1,
+
+ /* the device shall not set the Reservation Status bit to ONE
+ * and shall not transmit frames in conflicting MASs. If the
+ * device is the reservation target, it shall also set the
+ * Reason Code in its DRP IE to Conflict.
+ */
+ UWB_DRP_CONFLICT_ACT2,
+
+ /* the device shall not transmit frames in conflicting MASs in
+ * the following superframe. It shall remove the conflicting
+ * MASs from the reservation or set the Reservation Status to
+ * ZERO in its beacon in the following superframe. If the
+ * device is the reservation target, it shall also set the
+ * Reason Code in its DRP IE to Conflict.
+ */
+ UWB_DRP_CONFLICT_ACT3,
+};
+
+
+static void uwb_rc_set_drp_cmd_done(struct uwb_rc *rc, void *arg,
+ struct uwb_rceb *reply, ssize_t reply_size)
+{
+ struct uwb_rc_evt_set_drp_ie *r = (struct uwb_rc_evt_set_drp_ie *)reply;
+
+ if (r != NULL) {
+ if (r->bResultCode != UWB_RC_RES_SUCCESS)
+ dev_err(&rc->uwb_dev.dev, "SET-DRP-IE failed: %s (%d)\n",
+ uwb_rc_strerror(r->bResultCode), r->bResultCode);
+ } else
+ dev_err(&rc->uwb_dev.dev, "SET-DRP-IE: timeout\n");
+
+ spin_lock(&rc->rsvs_lock);
+ if (rc->set_drp_ie_pending > 1) {
+ rc->set_drp_ie_pending = 0;
+ uwb_rsv_queue_update(rc);
+ } else {
+ rc->set_drp_ie_pending = 0;
+ }
+ spin_unlock(&rc->rsvs_lock);
+}
+
/**
* Construct and send the SET DRP IE
*
@@ -37,28 +90,32 @@
*
* A DRP Availability IE is appended.
*
- * rc->uwb_dev.mutex is held
+ * rc->rsvs_mutex is held
*
* FIXME We currently ignore the returned value indicating the remaining space
* in beacon. This could be used to deny reservation requests earlier if
* determined that they would cause the beacon space to be exceeded.
*/
-static
-int uwb_rc_gen_send_drp_ie(struct uwb_rc *rc)
+int uwb_rc_send_all_drp_ie(struct uwb_rc *rc)
{
int result;
- struct device *dev = &rc->uwb_dev.dev;
struct uwb_rc_cmd_set_drp_ie *cmd;
- struct uwb_rc_evt_set_drp_ie reply;
struct uwb_rsv *rsv;
+ struct uwb_rsv_move *mv;
int num_bytes = 0;
u8 *IEDataptr;
result = -ENOMEM;
/* First traverse all reservations to determine memory needed. */
list_for_each_entry(rsv, &rc->reservations, rc_node) {
- if (rsv->drp_ie != NULL)
+ if (rsv->drp_ie != NULL) {
num_bytes += rsv->drp_ie->hdr.length + 2;
+ if (uwb_rsv_has_two_drp_ies(rsv) &&
+ (rsv->mv.companion_drp_ie != NULL)) {
+ mv = &rsv->mv;
+ num_bytes += mv->companion_drp_ie->hdr.length + 2;
+ }
+ }
}
num_bytes += sizeof(rc->drp_avail.ie);
cmd = kzalloc(sizeof(*cmd) + num_bytes, GFP_KERNEL);
@@ -69,128 +126,322 @@
cmd->wIELength = num_bytes;
IEDataptr = (u8 *)&cmd->IEData[0];
+ /* FIXME: DRV avail IE is not always needed */
+ /* put DRP avail IE first */
+ memcpy(IEDataptr, &rc->drp_avail.ie, sizeof(rc->drp_avail.ie));
+ IEDataptr += sizeof(struct uwb_ie_drp_avail);
+
/* Next traverse all reservations to place IEs in allocated memory. */
list_for_each_entry(rsv, &rc->reservations, rc_node) {
if (rsv->drp_ie != NULL) {
memcpy(IEDataptr, rsv->drp_ie,
rsv->drp_ie->hdr.length + 2);
IEDataptr += rsv->drp_ie->hdr.length + 2;
+
+ if (uwb_rsv_has_two_drp_ies(rsv) &&
+ (rsv->mv.companion_drp_ie != NULL)) {
+ mv = &rsv->mv;
+ memcpy(IEDataptr, mv->companion_drp_ie,
+ mv->companion_drp_ie->hdr.length + 2);
+ IEDataptr += mv->companion_drp_ie->hdr.length + 2;
+ }
}
}
- memcpy(IEDataptr, &rc->drp_avail.ie, sizeof(rc->drp_avail.ie));
- reply.rceb.bEventType = UWB_RC_CET_GENERAL;
- reply.rceb.wEvent = UWB_RC_CMD_SET_DRP_IE;
- result = uwb_rc_cmd(rc, "SET-DRP-IE", &cmd->rccb,
- sizeof(*cmd) + num_bytes, &reply.rceb,
- sizeof(reply));
- if (result < 0)
- goto error_cmd;
- result = le16_to_cpu(reply.wRemainingSpace);
- if (reply.bResultCode != UWB_RC_RES_SUCCESS) {
- dev_err(&rc->uwb_dev.dev, "SET-DRP-IE: command execution "
- "failed: %s (%d). RemainingSpace in beacon "
- "= %d\n", uwb_rc_strerror(reply.bResultCode),
- reply.bResultCode, result);
- result = -EIO;
- } else {
- dev_dbg(dev, "SET-DRP-IE sent. RemainingSpace in beacon "
- "= %d.\n", result);
- result = 0;
- }
-error_cmd:
+ result = uwb_rc_cmd_async(rc, "SET-DRP-IE", &cmd->rccb, sizeof(*cmd) + num_bytes,
+ UWB_RC_CET_GENERAL, UWB_RC_CMD_SET_DRP_IE,
+ uwb_rc_set_drp_cmd_done, NULL);
+
+ rc->set_drp_ie_pending = 1;
+
kfree(cmd);
error:
return result;
-
}
-/**
- * Send all DRP IEs associated with this host
+
+/*
+ * Evaluate the action to perform using conflict resolution rules
*
- * @returns: >= 0 number of bytes still available in the beacon
- * < 0 errno code on error.
- *
- * As per the protocol we obtain the host controller device lock to access
- * bandwidth structures.
+ * Return a uwb_drp_conflict_action.
*/
-int uwb_rc_send_all_drp_ie(struct uwb_rc *rc)
+static int evaluate_conflict_action(struct uwb_ie_drp *ext_drp_ie, int ext_beacon_slot,
+ struct uwb_rsv *rsv, int our_status)
{
- int result;
+ int our_tie_breaker = rsv->tiebreaker;
+ int our_type = rsv->type;
+ int our_beacon_slot = rsv->rc->uwb_dev.beacon_slot;
- mutex_lock(&rc->uwb_dev.mutex);
- result = uwb_rc_gen_send_drp_ie(rc);
- mutex_unlock(&rc->uwb_dev.mutex);
- return result;
-}
-
-void uwb_drp_handle_timeout(struct uwb_rsv *rsv)
-{
- struct device *dev = &rsv->rc->uwb_dev.dev;
-
- dev_dbg(dev, "reservation timeout in state %s (%d)\n",
- uwb_rsv_state_str(rsv->state), rsv->state);
-
- switch (rsv->state) {
- case UWB_RSV_STATE_O_INITIATED:
- if (rsv->is_multicast) {
- uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_ESTABLISHED);
- return;
- }
- break;
- case UWB_RSV_STATE_O_ESTABLISHED:
- if (rsv->is_multicast)
- return;
- break;
- default:
- break;
+ int ext_tie_breaker = uwb_ie_drp_tiebreaker(ext_drp_ie);
+ int ext_status = uwb_ie_drp_status(ext_drp_ie);
+ int ext_type = uwb_ie_drp_type(ext_drp_ie);
+
+
+ /* [ECMA-368 2nd Edition] 17.4.6 */
+ if (ext_type == UWB_DRP_TYPE_PCA && our_type == UWB_DRP_TYPE_PCA) {
+ return UWB_DRP_CONFLICT_MANTAIN;
}
- uwb_rsv_remove(rsv);
+
+ /* [ECMA-368 2nd Edition] 17.4.6-1 */
+ if (our_type == UWB_DRP_TYPE_ALIEN_BP) {
+ return UWB_DRP_CONFLICT_MANTAIN;
+ }
+
+ /* [ECMA-368 2nd Edition] 17.4.6-2 */
+ if (ext_type == UWB_DRP_TYPE_ALIEN_BP) {
+ /* here we know our_type != UWB_DRP_TYPE_ALIEN_BP */
+ return UWB_DRP_CONFLICT_ACT1;
+ }
+
+ /* [ECMA-368 2nd Edition] 17.4.6-3 */
+ if (our_status == 0 && ext_status == 1) {
+ return UWB_DRP_CONFLICT_ACT2;
+ }
+
+ /* [ECMA-368 2nd Edition] 17.4.6-4 */
+ if (our_status == 1 && ext_status == 0) {
+ return UWB_DRP_CONFLICT_MANTAIN;
+ }
+
+ /* [ECMA-368 2nd Edition] 17.4.6-5a */
+ if (our_tie_breaker == ext_tie_breaker &&
+ our_beacon_slot < ext_beacon_slot) {
+ return UWB_DRP_CONFLICT_MANTAIN;
+ }
+
+ /* [ECMA-368 2nd Edition] 17.4.6-5b */
+ if (our_tie_breaker != ext_tie_breaker &&
+ our_beacon_slot > ext_beacon_slot) {
+ return UWB_DRP_CONFLICT_MANTAIN;
+ }
+
+ if (our_status == 0) {
+ if (our_tie_breaker == ext_tie_breaker) {
+ /* [ECMA-368 2nd Edition] 17.4.6-6a */
+ if (our_beacon_slot > ext_beacon_slot) {
+ return UWB_DRP_CONFLICT_ACT2;
+ }
+ } else {
+ /* [ECMA-368 2nd Edition] 17.4.6-6b */
+ if (our_beacon_slot < ext_beacon_slot) {
+ return UWB_DRP_CONFLICT_ACT2;
+ }
+ }
+ } else {
+ if (our_tie_breaker == ext_tie_breaker) {
+ /* [ECMA-368 2nd Edition] 17.4.6-7a */
+ if (our_beacon_slot > ext_beacon_slot) {
+ return UWB_DRP_CONFLICT_ACT3;
+ }
+ } else {
+ /* [ECMA-368 2nd Edition] 17.4.6-7b */
+ if (our_beacon_slot < ext_beacon_slot) {
+ return UWB_DRP_CONFLICT_ACT3;
+ }
+ }
+ }
+ return UWB_DRP_CONFLICT_MANTAIN;
}
+static void handle_conflict_normal(struct uwb_ie_drp *drp_ie,
+ int ext_beacon_slot,
+ struct uwb_rsv *rsv,
+ struct uwb_mas_bm *conflicting_mas)
+{
+ struct uwb_rc *rc = rsv->rc;
+ struct uwb_rsv_move *mv = &rsv->mv;
+ struct uwb_drp_backoff_win *bow = &rc->bow;
+ int action;
+
+ action = evaluate_conflict_action(drp_ie, ext_beacon_slot, rsv, uwb_rsv_status(rsv));
+
+ if (uwb_rsv_is_owner(rsv)) {
+ switch(action) {
+ case UWB_DRP_CONFLICT_ACT2:
+ /* try move */
+ uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_TO_BE_MOVED);
+ if (bow->can_reserve_extra_mases == false)
+ uwb_rsv_backoff_win_increment(rc);
+
+ break;
+ case UWB_DRP_CONFLICT_ACT3:
+ uwb_rsv_backoff_win_increment(rc);
+ /* drop some mases with reason modified */
+ /* put in the companion the mases to be dropped */
+ bitmap_and(mv->companion_mas.bm, rsv->mas.bm, conflicting_mas->bm, UWB_NUM_MAS);
+ uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_MODIFIED);
+ default:
+ break;
+ }
+ } else {
+ switch(action) {
+ case UWB_DRP_CONFLICT_ACT2:
+ case UWB_DRP_CONFLICT_ACT3:
+ uwb_rsv_set_state(rsv, UWB_RSV_STATE_T_CONFLICT);
+ default:
+ break;
+ }
+
+ }
+
+}
+
+static void handle_conflict_expanding(struct uwb_ie_drp *drp_ie, int ext_beacon_slot,
+ struct uwb_rsv *rsv, bool companion_only,
+ struct uwb_mas_bm *conflicting_mas)
+{
+ struct uwb_rc *rc = rsv->rc;
+ struct uwb_drp_backoff_win *bow = &rc->bow;
+ struct uwb_rsv_move *mv = &rsv->mv;
+ int action;
+
+ if (companion_only) {
+ /* status of companion is 0 at this point */
+ action = evaluate_conflict_action(drp_ie, ext_beacon_slot, rsv, 0);
+ if (uwb_rsv_is_owner(rsv)) {
+ switch(action) {
+ case UWB_DRP_CONFLICT_ACT2:
+ case UWB_DRP_CONFLICT_ACT3:
+ uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_ESTABLISHED);
+ rsv->needs_release_companion_mas = false;
+ if (bow->can_reserve_extra_mases == false)
+ uwb_rsv_backoff_win_increment(rc);
+ uwb_drp_avail_release(rsv->rc, &rsv->mv.companion_mas);
+ }
+ } else { /* rsv is target */
+ switch(action) {
+ case UWB_DRP_CONFLICT_ACT2:
+ case UWB_DRP_CONFLICT_ACT3:
+ uwb_rsv_set_state(rsv, UWB_RSV_STATE_T_EXPANDING_CONFLICT);
+ /* send_drp_avail_ie = true; */
+ }
+ }
+ } else { /* also base part of the reservation is conflicting */
+ if (uwb_rsv_is_owner(rsv)) {
+ uwb_rsv_backoff_win_increment(rc);
+ /* remove companion part */
+ uwb_drp_avail_release(rsv->rc, &rsv->mv.companion_mas);
+
+ /* drop some mases with reason modified */
+
+ /* put in the companion the mases to be dropped */
+ bitmap_andnot(mv->companion_mas.bm, rsv->mas.bm, conflicting_mas->bm, UWB_NUM_MAS);
+ uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_MODIFIED);
+ } else { /* it is a target rsv */
+ uwb_rsv_set_state(rsv, UWB_RSV_STATE_T_CONFLICT);
+ /* send_drp_avail_ie = true; */
+ }
+ }
+}
+
+static void uwb_drp_handle_conflict_rsv(struct uwb_rc *rc, struct uwb_rsv *rsv,
+ struct uwb_rc_evt_drp *drp_evt,
+ struct uwb_ie_drp *drp_ie,
+ struct uwb_mas_bm *conflicting_mas)
+{
+ struct uwb_rsv_move *mv;
+
+ /* check if the conflicting reservation has two drp_ies */
+ if (uwb_rsv_has_two_drp_ies(rsv)) {
+ mv = &rsv->mv;
+ if (bitmap_intersects(rsv->mas.bm, conflicting_mas->bm, UWB_NUM_MAS)) {
+ handle_conflict_expanding(drp_ie, drp_evt->beacon_slot_number,
+ rsv, false, conflicting_mas);
+ } else {
+ if (bitmap_intersects(mv->companion_mas.bm, conflicting_mas->bm, UWB_NUM_MAS)) {
+ handle_conflict_expanding(drp_ie, drp_evt->beacon_slot_number,
+ rsv, true, conflicting_mas);
+ }
+ }
+ } else if (bitmap_intersects(rsv->mas.bm, conflicting_mas->bm, UWB_NUM_MAS)) {
+ handle_conflict_normal(drp_ie, drp_evt->beacon_slot_number, rsv, conflicting_mas);
+ }
+}
+
+static void uwb_drp_handle_all_conflict_rsv(struct uwb_rc *rc,
+ struct uwb_rc_evt_drp *drp_evt,
+ struct uwb_ie_drp *drp_ie,
+ struct uwb_mas_bm *conflicting_mas)
+{
+ struct uwb_rsv *rsv;
+
+ list_for_each_entry(rsv, &rc->reservations, rc_node) {
+ uwb_drp_handle_conflict_rsv(rc, rsv, drp_evt, drp_ie, conflicting_mas);
+ }
+}
+
/*
* Based on the DRP IE, transition a target reservation to a new
* state.
*/
static void uwb_drp_process_target(struct uwb_rc *rc, struct uwb_rsv *rsv,
- struct uwb_ie_drp *drp_ie)
+ struct uwb_ie_drp *drp_ie, struct uwb_rc_evt_drp *drp_evt)
{
struct device *dev = &rc->uwb_dev.dev;
+ struct uwb_rsv_move *mv = &rsv->mv;
int status;
enum uwb_drp_reason reason_code;
-
+ struct uwb_mas_bm mas;
+
status = uwb_ie_drp_status(drp_ie);
reason_code = uwb_ie_drp_reason_code(drp_ie);
+ uwb_drp_ie_to_bm(&mas, drp_ie);
- if (status) {
- switch (reason_code) {
- case UWB_DRP_REASON_ACCEPTED:
+ switch (reason_code) {
+ case UWB_DRP_REASON_ACCEPTED:
+
+ if (rsv->state == UWB_RSV_STATE_T_CONFLICT) {
+ uwb_rsv_set_state(rsv, UWB_RSV_STATE_T_CONFLICT);
+ break;
+ }
+
+ if (rsv->state == UWB_RSV_STATE_T_EXPANDING_ACCEPTED) {
+ /* drp_ie is companion */
+ if (!bitmap_equal(rsv->mas.bm, mas.bm, UWB_NUM_MAS))
+ /* stroke companion */
+ uwb_rsv_set_state(rsv, UWB_RSV_STATE_T_EXPANDING_ACCEPTED);
+ } else {
+ if (!bitmap_equal(rsv->mas.bm, mas.bm, UWB_NUM_MAS)) {
+ if (uwb_drp_avail_reserve_pending(rc, &mas) == -EBUSY) {
+ /* FIXME: there is a conflict, find
+ * the conflicting reservations and
+ * take a sensible action. Consider
+ * that in drp_ie there is the
+ * "neighbour" */
+ uwb_drp_handle_all_conflict_rsv(rc, drp_evt, drp_ie, &mas);
+ } else {
+ /* accept the extra reservation */
+ bitmap_copy(mv->companion_mas.bm, mas.bm, UWB_NUM_MAS);
+ uwb_rsv_set_state(rsv, UWB_RSV_STATE_T_EXPANDING_ACCEPTED);
+ }
+ } else {
+ if (status) {
+ uwb_rsv_set_state(rsv, UWB_RSV_STATE_T_ACCEPTED);
+ }
+ }
+
+ }
+ break;
+
+ case UWB_DRP_REASON_MODIFIED:
+ /* check to see if we have already modified the reservation */
+ if (bitmap_equal(rsv->mas.bm, mas.bm, UWB_NUM_MAS)) {
uwb_rsv_set_state(rsv, UWB_RSV_STATE_T_ACCEPTED);
break;
- case UWB_DRP_REASON_MODIFIED:
- dev_err(dev, "FIXME: unhandled reason code (%d/%d)\n",
- reason_code, status);
- break;
- default:
- dev_warn(dev, "ignoring invalid DRP IE state (%d/%d)\n",
- reason_code, status);
}
- } else {
- switch (reason_code) {
- case UWB_DRP_REASON_ACCEPTED:
- /* New reservations are handled in uwb_rsv_find(). */
- break;
- case UWB_DRP_REASON_DENIED:
- uwb_rsv_set_state(rsv, UWB_RSV_STATE_NONE);
- break;
- case UWB_DRP_REASON_CONFLICT:
- case UWB_DRP_REASON_MODIFIED:
- dev_err(dev, "FIXME: unhandled reason code (%d/%d)\n",
- reason_code, status);
- break;
- default:
- dev_warn(dev, "ignoring invalid DRP IE state (%d/%d)\n",
- reason_code, status);
+
+ /* find if the owner wants to expand or reduce */
+ if (bitmap_subset(mas.bm, rsv->mas.bm, UWB_NUM_MAS)) {
+ /* owner is reducing */
+ bitmap_andnot(mv->companion_mas.bm, rsv->mas.bm, mas.bm, UWB_NUM_MAS);
+ uwb_drp_avail_release(rsv->rc, &mv->companion_mas);
}
+
+ bitmap_copy(rsv->mas.bm, mas.bm, UWB_NUM_MAS);
+ uwb_rsv_set_state(rsv, UWB_RSV_STATE_T_RESIZED);
+ break;
+ default:
+ dev_warn(dev, "ignoring invalid DRP IE state (%d/%d)\n",
+ reason_code, status);
}
}
@@ -199,23 +450,60 @@
* state.
*/
static void uwb_drp_process_owner(struct uwb_rc *rc, struct uwb_rsv *rsv,
- struct uwb_ie_drp *drp_ie)
+ struct uwb_dev *src, struct uwb_ie_drp *drp_ie,
+ struct uwb_rc_evt_drp *drp_evt)
{
struct device *dev = &rc->uwb_dev.dev;
+ struct uwb_rsv_move *mv = &rsv->mv;
int status;
enum uwb_drp_reason reason_code;
+ struct uwb_mas_bm mas;
status = uwb_ie_drp_status(drp_ie);
reason_code = uwb_ie_drp_reason_code(drp_ie);
+ uwb_drp_ie_to_bm(&mas, drp_ie);
if (status) {
switch (reason_code) {
case UWB_DRP_REASON_ACCEPTED:
- uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_ESTABLISHED);
- break;
- case UWB_DRP_REASON_MODIFIED:
- dev_err(dev, "FIXME: unhandled reason code (%d/%d)\n",
- reason_code, status);
+ switch (rsv->state) {
+ case UWB_RSV_STATE_O_PENDING:
+ case UWB_RSV_STATE_O_INITIATED:
+ case UWB_RSV_STATE_O_ESTABLISHED:
+ uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_ESTABLISHED);
+ break;
+ case UWB_RSV_STATE_O_MODIFIED:
+ if (bitmap_equal(mas.bm, rsv->mas.bm, UWB_NUM_MAS)) {
+ uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_ESTABLISHED);
+ } else {
+ uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_MODIFIED);
+ }
+ break;
+
+ case UWB_RSV_STATE_O_MOVE_REDUCING: /* shouldn' t be a problem */
+ if (bitmap_equal(mas.bm, rsv->mas.bm, UWB_NUM_MAS)) {
+ uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_ESTABLISHED);
+ } else {
+ uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_MOVE_REDUCING);
+ }
+ break;
+ case UWB_RSV_STATE_O_MOVE_EXPANDING:
+ if (bitmap_equal(mas.bm, mv->companion_mas.bm, UWB_NUM_MAS)) {
+ /* Companion reservation accepted */
+ uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_MOVE_COMBINING);
+ } else {
+ uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_MOVE_EXPANDING);
+ }
+ break;
+ case UWB_RSV_STATE_O_MOVE_COMBINING:
+ if (bitmap_equal(mas.bm, rsv->mas.bm, UWB_NUM_MAS))
+ uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_MOVE_REDUCING);
+ else
+ uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_MOVE_COMBINING);
+ break;
+ default:
+ break;
+ }
break;
default:
dev_warn(dev, "ignoring invalid DRP IE state (%d/%d)\n",
@@ -230,9 +518,10 @@
uwb_rsv_set_state(rsv, UWB_RSV_STATE_NONE);
break;
case UWB_DRP_REASON_CONFLICT:
- case UWB_DRP_REASON_MODIFIED:
- dev_err(dev, "FIXME: unhandled reason code (%d/%d)\n",
- reason_code, status);
+ /* resolve the conflict */
+ bitmap_complement(mas.bm, src->last_availability_bm,
+ UWB_NUM_MAS);
+ uwb_drp_handle_conflict_rsv(rc, rsv, drp_evt, drp_ie, &mas);
break;
default:
dev_warn(dev, "ignoring invalid DRP IE state (%d/%d)\n",
@@ -241,12 +530,110 @@
}
}
+static void uwb_cnflt_alien_stroke_timer(struct uwb_cnflt_alien *cnflt)
+{
+ unsigned timeout_us = UWB_MAX_LOST_BEACONS * UWB_SUPERFRAME_LENGTH_US;
+ mod_timer(&cnflt->timer, jiffies + usecs_to_jiffies(timeout_us));
+}
+
+static void uwb_cnflt_update_work(struct work_struct *work)
+{
+ struct uwb_cnflt_alien *cnflt = container_of(work,
+ struct uwb_cnflt_alien,
+ cnflt_update_work);
+ struct uwb_cnflt_alien *c;
+ struct uwb_rc *rc = cnflt->rc;
+
+ unsigned long delay_us = UWB_MAS_LENGTH_US * UWB_MAS_PER_ZONE;
+
+ mutex_lock(&rc->rsvs_mutex);
+
+ list_del(&cnflt->rc_node);
+
+ /* update rc global conflicting alien bitmap */
+ bitmap_zero(rc->cnflt_alien_bitmap.bm, UWB_NUM_MAS);
+
+ list_for_each_entry(c, &rc->cnflt_alien_list, rc_node) {
+ bitmap_or(rc->cnflt_alien_bitmap.bm, rc->cnflt_alien_bitmap.bm, c->mas.bm, UWB_NUM_MAS);
+ }
+
+ queue_delayed_work(rc->rsv_workq, &rc->rsv_alien_bp_work, usecs_to_jiffies(delay_us));
+
+ kfree(cnflt);
+ mutex_unlock(&rc->rsvs_mutex);
+}
+
+static void uwb_cnflt_timer(unsigned long arg)
+{
+ struct uwb_cnflt_alien *cnflt = (struct uwb_cnflt_alien *)arg;
+
+ queue_work(cnflt->rc->rsv_workq, &cnflt->cnflt_update_work);
+}
+
/*
- * Process a received DRP IE, it's either for a reservation owned by
- * the RC or targeted at it (or it's for a WUSB cluster reservation).
+ * We have received an DRP_IE of type Alien BP and we need to make
+ * sure we do not transmit in conflicting MASs.
*/
-static void uwb_drp_process(struct uwb_rc *rc, struct uwb_dev *src,
- struct uwb_ie_drp *drp_ie)
+static void uwb_drp_handle_alien_drp(struct uwb_rc *rc, struct uwb_ie_drp *drp_ie)
+{
+ struct device *dev = &rc->uwb_dev.dev;
+ struct uwb_mas_bm mas;
+ struct uwb_cnflt_alien *cnflt;
+ char buf[72];
+ unsigned long delay_us = UWB_MAS_LENGTH_US * UWB_MAS_PER_ZONE;
+
+ uwb_drp_ie_to_bm(&mas, drp_ie);
+ bitmap_scnprintf(buf, sizeof(buf), mas.bm, UWB_NUM_MAS);
+
+ list_for_each_entry(cnflt, &rc->cnflt_alien_list, rc_node) {
+ if (bitmap_equal(cnflt->mas.bm, mas.bm, UWB_NUM_MAS)) {
+ /* Existing alien BP reservation conflicting
+ * bitmap, just reset the timer */
+ uwb_cnflt_alien_stroke_timer(cnflt);
+ return;
+ }
+ }
+
+ /* New alien BP reservation conflicting bitmap */
+
+ /* alloc and initialize new uwb_cnflt_alien */
+ cnflt = kzalloc(sizeof(struct uwb_cnflt_alien), GFP_KERNEL);
+ if (!cnflt)
+ dev_err(dev, "failed to alloc uwb_cnflt_alien struct\n");
+ INIT_LIST_HEAD(&cnflt->rc_node);
+ init_timer(&cnflt->timer);
+ cnflt->timer.function = uwb_cnflt_timer;
+ cnflt->timer.data = (unsigned long)cnflt;
+
+ cnflt->rc = rc;
+ INIT_WORK(&cnflt->cnflt_update_work, uwb_cnflt_update_work);
+
+ bitmap_copy(cnflt->mas.bm, mas.bm, UWB_NUM_MAS);
+
+ list_add_tail(&cnflt->rc_node, &rc->cnflt_alien_list);
+
+ /* update rc global conflicting alien bitmap */
+ bitmap_or(rc->cnflt_alien_bitmap.bm, rc->cnflt_alien_bitmap.bm, mas.bm, UWB_NUM_MAS);
+
+ queue_delayed_work(rc->rsv_workq, &rc->rsv_alien_bp_work, usecs_to_jiffies(delay_us));
+
+ /* start the timer */
+ uwb_cnflt_alien_stroke_timer(cnflt);
+}
+
+static void uwb_drp_process_not_involved(struct uwb_rc *rc,
+ struct uwb_rc_evt_drp *drp_evt,
+ struct uwb_ie_drp *drp_ie)
+{
+ struct uwb_mas_bm mas;
+
+ uwb_drp_ie_to_bm(&mas, drp_ie);
+ uwb_drp_handle_all_conflict_rsv(rc, drp_evt, drp_ie, &mas);
+}
+
+static void uwb_drp_process_involved(struct uwb_rc *rc, struct uwb_dev *src,
+ struct uwb_rc_evt_drp *drp_evt,
+ struct uwb_ie_drp *drp_ie)
{
struct uwb_rsv *rsv;
@@ -259,7 +646,7 @@
*/
return;
}
-
+
/*
* Do nothing with DRP IEs for reservations that have been
* terminated.
@@ -268,14 +655,44 @@
uwb_rsv_set_state(rsv, UWB_RSV_STATE_NONE);
return;
}
-
+
if (uwb_ie_drp_owner(drp_ie))
- uwb_drp_process_target(rc, rsv, drp_ie);
+ uwb_drp_process_target(rc, rsv, drp_ie, drp_evt);
else
- uwb_drp_process_owner(rc, rsv, drp_ie);
+ uwb_drp_process_owner(rc, rsv, src, drp_ie, drp_evt);
+
}
+static bool uwb_drp_involves_us(struct uwb_rc *rc, struct uwb_ie_drp *drp_ie)
+{
+ return uwb_dev_addr_cmp(&rc->uwb_dev.dev_addr, &drp_ie->dev_addr) == 0;
+}
+
+/*
+ * Process a received DRP IE.
+ */
+static void uwb_drp_process(struct uwb_rc *rc, struct uwb_rc_evt_drp *drp_evt,
+ struct uwb_dev *src, struct uwb_ie_drp *drp_ie)
+{
+ if (uwb_ie_drp_type(drp_ie) == UWB_DRP_TYPE_ALIEN_BP)
+ uwb_drp_handle_alien_drp(rc, drp_ie);
+ else if (uwb_drp_involves_us(rc, drp_ie))
+ uwb_drp_process_involved(rc, src, drp_evt, drp_ie);
+ else
+ uwb_drp_process_not_involved(rc, drp_evt, drp_ie);
+}
+
+/*
+ * Process a received DRP Availability IE
+ */
+static void uwb_drp_availability_process(struct uwb_rc *rc, struct uwb_dev *src,
+ struct uwb_ie_drp_avail *drp_availability_ie)
+{
+ bitmap_copy(src->last_availability_bm,
+ drp_availability_ie->bmp, UWB_NUM_MAS);
+}
+
/*
* Process all the DRP IEs (both DRP IEs and the DRP Availability IE)
* from a device.
@@ -296,10 +713,10 @@
switch (ie_hdr->element_id) {
case UWB_IE_DRP_AVAILABILITY:
- /* FIXME: does something need to be done with this? */
+ uwb_drp_availability_process(rc, src_dev, (struct uwb_ie_drp_avail *)ie_hdr);
break;
case UWB_IE_DRP:
- uwb_drp_process(rc, src_dev, (struct uwb_ie_drp *)ie_hdr);
+ uwb_drp_process(rc, drp_evt, src_dev, (struct uwb_ie_drp *)ie_hdr);
break;
default:
dev_warn(dev, "unexpected IE in DRP notification\n");
@@ -312,55 +729,6 @@
(int)ielen);
}
-
-/*
- * Go through all the DRP IEs and find the ones that conflict with our
- * reservations.
- *
- * FIXME: must resolve the conflict according the the rules in
- * [ECMA-368].
- */
-static
-void uwb_drp_process_conflict_all(struct uwb_rc *rc, struct uwb_rc_evt_drp *drp_evt,
- size_t ielen, struct uwb_dev *src_dev)
-{
- struct device *dev = &rc->uwb_dev.dev;
- struct uwb_ie_hdr *ie_hdr;
- struct uwb_ie_drp *drp_ie;
- void *ptr;
-
- ptr = drp_evt->ie_data;
- for (;;) {
- ie_hdr = uwb_ie_next(&ptr, &ielen);
- if (!ie_hdr)
- break;
-
- drp_ie = container_of(ie_hdr, struct uwb_ie_drp, hdr);
-
- /* FIXME: check if this DRP IE conflicts. */
- }
-
- if (ielen > 0)
- dev_warn(dev, "%d octets remaining in DRP notification\n",
- (int)ielen);
-}
-
-
-/*
- * Terminate all reservations owned by, or targeted at, 'uwb_dev'.
- */
-static void uwb_drp_terminate_all(struct uwb_rc *rc, struct uwb_dev *uwb_dev)
-{
- struct uwb_rsv *rsv;
-
- list_for_each_entry(rsv, &rc->reservations, rc_node) {
- if (rsv->owner == uwb_dev
- || (rsv->target.type == UWB_RSV_TARGET_DEV && rsv->target.dev == uwb_dev))
- uwb_rsv_remove(rsv);
- }
-}
-
-
/**
* uwbd_evt_handle_rc_drp - handle a DRP_IE event
* @evt: the DRP_IE event from the radio controller
@@ -401,7 +769,6 @@
size_t ielength, bytes_left;
struct uwb_dev_addr src_addr;
struct uwb_dev *src_dev;
- int reason;
/* Is there enough data to decode the event (and any IEs in
its payload)? */
@@ -437,22 +804,8 @@
mutex_lock(&rc->rsvs_mutex);
- reason = uwb_rc_evt_drp_reason(drp_evt);
-
- switch (reason) {
- case UWB_DRP_NOTIF_DRP_IE_RCVD:
- uwb_drp_process_all(rc, drp_evt, ielength, src_dev);
- break;
- case UWB_DRP_NOTIF_CONFLICT:
- uwb_drp_process_conflict_all(rc, drp_evt, ielength, src_dev);
- break;
- case UWB_DRP_NOTIF_TERMINATE:
- uwb_drp_terminate_all(rc, src_dev);
- break;
- default:
- dev_warn(dev, "ignored DRP event with reason code: %d\n", reason);
- break;
- }
+ /* We do not distinguish from the reason */
+ uwb_drp_process_all(rc, drp_evt, ielength, src_dev);
mutex_unlock(&rc->rsvs_mutex);
diff --git a/drivers/uwb/est.c b/drivers/uwb/est.c
index 5fe566b..328fcc2 100644
--- a/drivers/uwb/est.c
+++ b/drivers/uwb/est.c
@@ -40,10 +40,8 @@
* uwb_est_get_size()
*/
#include <linux/spinlock.h>
-#define D_LOCAL 0
-#include <linux/uwb/debug.h>
-#include "uwb-internal.h"
+#include "uwb-internal.h"
struct uwb_est {
u16 type_event_high;
@@ -52,7 +50,6 @@
const struct uwb_est_entry *entry;
};
-
static struct uwb_est *uwb_est;
static u8 uwb_est_size;
static u8 uwb_est_used;
@@ -440,21 +437,12 @@
u8 *ptr = (u8 *) rceb;
read_lock_irqsave(&uwb_est_lock, flags);
- d_printf(2, dev, "Size query for event 0x%02x/%04x/%02x,"
- " buffer size %ld\n",
- (unsigned) rceb->bEventType,
- (unsigned) le16_to_cpu(rceb->wEvent),
- (unsigned) rceb->bEventContext,
- (long) rceb_size);
size = -ENOSPC;
if (rceb_size < sizeof(*rceb))
goto out;
event = le16_to_cpu(rceb->wEvent);
type_event_high = rceb->bEventType << 8 | (event & 0xff00) >> 8;
for (itr = 0; itr < uwb_est_used; itr++) {
- d_printf(3, dev, "Checking EST 0x%04x/%04x/%04x\n",
- uwb_est[itr].type_event_high, uwb_est[itr].vendor,
- uwb_est[itr].product);
if (uwb_est[itr].type_event_high != type_event_high)
continue;
size = uwb_est_get_size(rc, &uwb_est[itr],
diff --git a/drivers/uwb/hwa-rc.c b/drivers/uwb/hwa-rc.c
index 3d26fa0..559f878 100644
--- a/drivers/uwb/hwa-rc.c
+++ b/drivers/uwb/hwa-rc.c
@@ -51,16 +51,14 @@
*
*
*/
-#include <linux/version.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/usb.h>
#include <linux/usb/wusb.h>
#include <linux/usb/wusb-wa.h>
#include <linux/uwb.h>
+
#include "uwb-internal.h"
-#define D_LOCAL 1
-#include <linux/uwb/debug.h>
/* The device uses commands and events from the WHCI specification, although
* reporting itself as WUSB compliant. */
@@ -631,17 +629,13 @@
switch (result = urb->status) {
case 0:
- d_printf(3, dev, "NEEP: receive stat %d, %zu bytes\n",
- urb->status, (size_t)urb->actual_length);
uwb_rc_neh_grok(hwarc->uwb_rc, urb->transfer_buffer,
urb->actual_length);
break;
case -ECONNRESET: /* Not an error, but a controlled situation; */
case -ENOENT: /* (we killed the URB)...so, no broadcast */
- d_printf(2, dev, "NEEP: URB reset/noent %d\n", urb->status);
goto out;
case -ESHUTDOWN: /* going away! */
- d_printf(2, dev, "NEEP: URB down %d\n", urb->status);
goto out;
default: /* On general errors, retry unless it gets ugly */
if (edc_inc(&hwarc->neep_edc, EDC_MAX_ERRORS,
@@ -650,7 +644,6 @@
dev_err(dev, "NEEP: URB error %d\n", urb->status);
}
result = usb_submit_urb(urb, GFP_ATOMIC);
- d_printf(3, dev, "NEEP: submit %d\n", result);
if (result < 0) {
dev_err(dev, "NEEP: Can't resubmit URB (%d) resetting device\n",
result);
@@ -759,11 +752,11 @@
itr_size = le16_to_cpu(usb_dev->actconfig->desc.wTotalLength);
while (itr_size >= sizeof(*hdr)) {
hdr = (struct usb_descriptor_header *) itr;
- d_printf(3, dev, "Extra device descriptor: "
- "type %02x/%u bytes @ %zu (%zu left)\n",
- hdr->bDescriptorType, hdr->bLength,
- (itr - usb_dev->rawdescriptors[actconfig_idx]),
- itr_size);
+ dev_dbg(dev, "Extra device descriptor: "
+ "type %02x/%u bytes @ %zu (%zu left)\n",
+ hdr->bDescriptorType, hdr->bLength,
+ (itr - usb_dev->rawdescriptors[actconfig_idx]),
+ itr_size);
if (hdr->bDescriptorType == USB_DT_CS_RADIO_CONTROL)
goto found;
itr += hdr->bLength;
@@ -795,8 +788,7 @@
goto error;
}
rc->version = version;
- d_printf(3, dev, "Device supports WUSB protocol version 0x%04x \n",
- rc->version);
+ dev_dbg(dev, "Device supports WUSB protocol version 0x%04x \n", rc->version);
result = 0;
error:
return result;
@@ -877,11 +869,28 @@
uwb_rc_rm(uwb_rc);
usb_put_intf(hwarc->usb_iface);
usb_put_dev(hwarc->usb_dev);
- d_printf(1, &hwarc->usb_iface->dev, "freed hwarc %p\n", hwarc);
kfree(hwarc);
uwb_rc_put(uwb_rc); /* when creating the device, refcount = 1 */
}
+static int hwarc_pre_reset(struct usb_interface *iface)
+{
+ struct hwarc *hwarc = usb_get_intfdata(iface);
+ struct uwb_rc *uwb_rc = hwarc->uwb_rc;
+
+ uwb_rc_pre_reset(uwb_rc);
+ return 0;
+}
+
+static int hwarc_post_reset(struct usb_interface *iface)
+{
+ struct hwarc *hwarc = usb_get_intfdata(iface);
+ struct uwb_rc *uwb_rc = hwarc->uwb_rc;
+
+ uwb_rc_post_reset(uwb_rc);
+ return 0;
+}
+
/** USB device ID's that we handle */
static struct usb_device_id hwarc_id_table[] = {
/* D-Link DUB-1210 */
@@ -898,20 +907,16 @@
static struct usb_driver hwarc_driver = {
.name = "hwa-rc",
+ .id_table = hwarc_id_table,
.probe = hwarc_probe,
.disconnect = hwarc_disconnect,
- .id_table = hwarc_id_table,
+ .pre_reset = hwarc_pre_reset,
+ .post_reset = hwarc_post_reset,
};
static int __init hwarc_driver_init(void)
{
- int result;
- result = usb_register(&hwarc_driver);
- if (result < 0)
- printk(KERN_ERR "HWA-RC: Cannot register USB driver: %d\n",
- result);
- return result;
-
+ return usb_register(&hwarc_driver);
}
module_init(hwarc_driver_init);
diff --git a/drivers/uwb/i1480/dfu/dfu.c b/drivers/uwb/i1480/dfu/dfu.c
index 9097b3b..da7b1d0 100644
--- a/drivers/uwb/i1480/dfu/dfu.c
+++ b/drivers/uwb/i1480/dfu/dfu.c
@@ -34,10 +34,7 @@
#include <linux/uwb.h>
#include <linux/random.h>
-#define D_LOCAL 0
-#include <linux/uwb/debug.h>
-
-/**
+/*
* i1480_rceb_check - Check RCEB for expected field values
* @i1480: pointer to device for which RCEB is being checked
* @rceb: RCEB being checked
@@ -83,7 +80,7 @@
EXPORT_SYMBOL_GPL(i1480_rceb_check);
-/**
+/*
* Execute a Radio Control Command
*
* Command data has to be in i1480->cmd_buf.
@@ -101,7 +98,6 @@
u8 expected_type = reply->bEventType;
u8 context;
- d_fnstart(3, i1480->dev, "(%p, %s, %zu)\n", i1480, cmd_name, cmd_size);
init_completion(&i1480->evt_complete);
i1480->evt_result = -EINPROGRESS;
do {
@@ -150,8 +146,6 @@
result = i1480_rceb_check(i1480, i1480->evt_buf, cmd_name, context,
expected_type, expected_event);
error:
- d_fnend(3, i1480->dev, "(%p, %s, %zu) = %zd\n",
- i1480, cmd_name, cmd_size, result);
return result;
}
EXPORT_SYMBOL_GPL(i1480_cmd);
diff --git a/drivers/uwb/i1480/dfu/mac.c b/drivers/uwb/i1480/dfu/mac.c
index 2e4d8f0..694d0da 100644
--- a/drivers/uwb/i1480/dfu/mac.c
+++ b/drivers/uwb/i1480/dfu/mac.c
@@ -31,9 +31,6 @@
#include <linux/uwb.h>
#include "i1480-dfu.h"
-#define D_LOCAL 0
-#include <linux/uwb/debug.h>
-
/*
* Descriptor for a continuous segment of MAC fw data
*/
@@ -184,10 +181,6 @@
}
if (memcmp(i1480->cmd_buf, bin + src_itr, result)) {
u8 *buf = i1480->cmd_buf;
- d_printf(2, i1480->dev,
- "original data @ %p + %u, %zu bytes\n",
- bin, src_itr, result);
- d_dump(4, i1480->dev, bin + src_itr, result);
for (cnt = 0; cnt < result; cnt++)
if (bin[src_itr + cnt] != buf[cnt]) {
dev_err(i1480->dev, "byte failed at "
@@ -224,7 +217,6 @@
struct fw_hdr *hdr_itr;
int verif_retry_count;
- d_fnstart(3, dev, "(%p, %p)\n", i1480, hdr);
/* Now, header by header, push them to the hw */
for (hdr_itr = hdr; hdr_itr != NULL; hdr_itr = hdr_itr->next) {
verif_retry_count = 0;
@@ -264,7 +256,6 @@
break;
}
}
- d_fnend(3, dev, "(%zd)\n", result);
return result;
}
@@ -337,11 +328,9 @@
const struct firmware *fw;
struct fw_hdr *fw_hdrs;
- d_fnstart(3, i1480->dev, "(%p, %s, %s)\n", i1480, fw_name, fw_tag);
result = request_firmware(&fw, fw_name, i1480->dev);
if (result < 0) /* Up to caller to complain on -ENOENT */
goto out;
- d_printf(3, i1480->dev, "%s fw '%s': uploading\n", fw_tag, fw_name);
result = fw_hdrs_load(i1480, &fw_hdrs, fw->data, fw->size);
if (result < 0) {
dev_err(i1480->dev, "%s fw '%s': failed to parse firmware "
@@ -363,8 +352,6 @@
out_release:
release_firmware(fw);
out:
- d_fnend(3, i1480->dev, "(%p, %s, %s) = %d\n", i1480, fw_name, fw_tag,
- result);
return result;
}
@@ -433,7 +420,6 @@
int result;
u32 *val = (u32 *) i1480->cmd_buf;
- d_fnstart(3, i1480->dev, "(i1480 %p)\n", i1480);
for (cnt = 0; cnt < 10; cnt++) {
msleep(100);
result = i1480->read(i1480, 0x80080000, 4);
@@ -447,7 +433,6 @@
dev_err(i1480->dev, "Timed out waiting for fw to start\n");
result = -ETIMEDOUT;
out:
- d_fnend(3, i1480->dev, "(i1480 %p) = %d\n", i1480, result);
return result;
}
@@ -467,7 +452,6 @@
int result = 0, deprecated_name = 0;
struct i1480_rceb *rcebe = (void *) i1480->evt_buf;
- d_fnstart(3, i1480->dev, "(%p)\n", i1480);
result = __mac_fw_upload(i1480, i1480->mac_fw_name, "MAC");
if (result == -ENOENT) {
result = __mac_fw_upload(i1480, i1480->mac_fw_name_deprecate,
@@ -501,7 +485,6 @@
dev_err(i1480->dev, "MAC fw '%s': initialization event returns "
"wrong size (%zu bytes vs %zu needed)\n",
i1480->mac_fw_name, i1480->evt_result, sizeof(*rcebe));
- dump_bytes(i1480->dev, rcebe, min(i1480->evt_result, (ssize_t)32));
goto error_size;
}
result = -EIO;
@@ -522,6 +505,5 @@
error_init_timeout:
error_size:
error_setup:
- d_fnend(3, i1480->dev, "(i1480 %p) = %d\n", i1480, result);
return result;
}
diff --git a/drivers/uwb/i1480/dfu/usb.c b/drivers/uwb/i1480/dfu/usb.c
index 98eeeff..686795e 100644
--- a/drivers/uwb/i1480/dfu/usb.c
+++ b/drivers/uwb/i1480/dfu/usb.c
@@ -35,7 +35,6 @@
* the functions are i1480_usb_NAME().
*/
#include <linux/module.h>
-#include <linux/version.h>
#include <linux/usb.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
@@ -44,10 +43,6 @@
#include <linux/usb/wusb-wa.h>
#include "i1480-dfu.h"
-#define D_LOCAL 0
-#include <linux/uwb/debug.h>
-
-
struct i1480_usb {
struct i1480 i1480;
struct usb_device *usb_dev;
@@ -118,8 +113,6 @@
struct i1480_usb *i1480_usb = container_of(i1480, struct i1480_usb, i1480);
size_t buffer_size, itr = 0;
- d_fnstart(3, i1480->dev, "(%p, 0x%08x, %p, %zu)\n",
- i1480, memory_address, buffer, size);
BUG_ON(size & 0x3); /* Needs to be a multiple of 4 */
while (size > 0) {
buffer_size = size < i1480->buf_size ? size : i1480->buf_size;
@@ -132,16 +125,10 @@
i1480->cmd_buf, buffer_size, 100 /* FIXME: arbitrary */);
if (result < 0)
break;
- d_printf(3, i1480->dev,
- "wrote @ 0x%08x %u bytes (of %zu bytes requested)\n",
- memory_address, result, buffer_size);
- d_dump(4, i1480->dev, i1480->cmd_buf, result);
itr += result;
memory_address += result;
size -= result;
}
- d_fnend(3, i1480->dev, "(%p, 0x%08x, %p, %zu) = %d\n",
- i1480, memory_address, buffer, size, result);
return result;
}
@@ -166,8 +153,6 @@
size_t itr, read_size = i1480->buf_size;
struct i1480_usb *i1480_usb = container_of(i1480, struct i1480_usb, i1480);
- d_fnstart(3, i1480->dev, "(%p, 0x%08x, %zu)\n",
- i1480, addr, size);
BUG_ON(size > i1480->buf_size);
BUG_ON(size & 0x3); /* Needs to be a multiple of 4 */
BUG_ON(read_size > 512);
@@ -201,10 +186,6 @@
}
result = bytes;
out:
- d_fnend(3, i1480->dev, "(%p, 0x%08x, %zu) = %zd\n",
- i1480, addr, size, result);
- if (result > 0)
- d_dump(4, i1480->dev, i1480->cmd_buf, result);
return result;
}
@@ -260,7 +241,6 @@
struct i1480_usb *i1480_usb = container_of(i1480, struct i1480_usb, i1480);
struct usb_endpoint_descriptor *epd;
- d_fnstart(3, dev, "(%p)\n", i1480);
init_completion(&i1480->evt_complete);
i1480->evt_result = -EINPROGRESS;
epd = &i1480_usb->usb_iface->cur_altsetting->endpoint[0].desc;
@@ -282,14 +262,12 @@
goto error_wait;
}
usb_kill_urb(i1480_usb->neep_urb);
- d_fnend(3, dev, "(%p) = 0\n", i1480);
return 0;
error_wait:
usb_kill_urb(i1480_usb->neep_urb);
error_submit:
i1480->evt_result = result;
- d_fnend(3, dev, "(%p) = %d\n", i1480, result);
return result;
}
@@ -320,7 +298,6 @@
struct uwb_rccb *cmd = i1480->cmd_buf;
u8 iface_no;
- d_fnstart(3, dev, "(%p, %s, %zu)\n", i1480, cmd_name, cmd_size);
/* Post a read on the notification & event endpoint */
iface_no = i1480_usb->usb_iface->cur_altsetting->desc.bInterfaceNumber;
epd = &i1480_usb->usb_iface->cur_altsetting->endpoint[0].desc;
@@ -348,15 +325,11 @@
cmd_name, result);
goto error_submit_ep0;
}
- d_fnend(3, dev, "(%p, %s, %zu) = %d\n",
- i1480, cmd_name, cmd_size, result);
return result;
error_submit_ep0:
usb_kill_urb(i1480_usb->neep_urb);
error_submit_ep1:
- d_fnend(3, dev, "(%p, %s, %zu) = %d\n",
- i1480, cmd_name, cmd_size, result);
return result;
}
diff --git a/drivers/uwb/i1480/i1480u-wlp/lc.c b/drivers/uwb/i1480/i1480u-wlp/lc.c
index 737d60c..049c05d 100644
--- a/drivers/uwb/i1480/i1480u-wlp/lc.c
+++ b/drivers/uwb/i1480/i1480u-wlp/lc.c
@@ -55,10 +55,9 @@
* is being removed.
* i1480u_rm()
*/
-#include <linux/version.h>
#include <linux/if_arp.h>
#include <linux/etherdevice.h>
-#include <linux/uwb/debug.h>
+
#include "i1480u-wlp.h"
@@ -207,7 +206,7 @@
wlp->fill_device_info = i1480u_fill_device_info;
wlp->stop_queue = i1480u_stop_queue;
wlp->start_queue = i1480u_start_queue;
- result = wlp_setup(wlp, rc);
+ result = wlp_setup(wlp, rc, net_dev);
if (result < 0) {
dev_err(&iface->dev, "Cannot setup WLP\n");
goto error_wlp_setup;
diff --git a/drivers/uwb/i1480/i1480u-wlp/netdev.c b/drivers/uwb/i1480/i1480u-wlp/netdev.c
index 8802ac4..e3873ff 100644
--- a/drivers/uwb/i1480/i1480u-wlp/netdev.c
+++ b/drivers/uwb/i1480/i1480u-wlp/netdev.c
@@ -41,7 +41,7 @@
#include <linux/if_arp.h>
#include <linux/etherdevice.h>
-#include <linux/uwb/debug.h>
+
#include "i1480u-wlp.h"
struct i1480u_cmd_set_ip_mas {
@@ -207,6 +207,11 @@
result = i1480u_rx_setup(i1480u); /* Alloc RX stuff */
if (result < 0)
goto error_rx_setup;
+
+ result = uwb_radio_start(&wlp->pal);
+ if (result < 0)
+ goto error_radio_start;
+
netif_wake_queue(net_dev);
#ifdef i1480u_FLOW_CONTROL
result = usb_submit_urb(i1480u->notif_urb, GFP_KERNEL);;
@@ -215,25 +220,20 @@
goto error_notif_urb_submit;
}
#endif
- i1480u->uwb_notifs_handler.cb = i1480u_uwb_notifs_cb;
- i1480u->uwb_notifs_handler.data = i1480u;
- if (uwb_bg_joined(rc))
- netif_carrier_on(net_dev);
- else
- netif_carrier_off(net_dev);
- uwb_notifs_register(rc, &i1480u->uwb_notifs_handler);
/* Interface is up with an address, now we can create WSS */
result = wlp_wss_setup(net_dev, &wlp->wss);
if (result < 0) {
dev_err(dev, "Can't create WSS: %d. \n", result);
- goto error_notif_deregister;
+ goto error_wss_setup;
}
return 0;
-error_notif_deregister:
- uwb_notifs_deregister(rc, &i1480u->uwb_notifs_handler);
+error_wss_setup:
#ifdef i1480u_FLOW_CONTROL
+ usb_kill_urb(i1480u->notif_urb);
error_notif_urb_submit:
#endif
+ uwb_radio_stop(&wlp->pal);
+error_radio_start:
netif_stop_queue(net_dev);
i1480u_rx_release(i1480u);
error_rx_setup:
@@ -248,16 +248,15 @@
{
struct i1480u *i1480u = netdev_priv(net_dev);
struct wlp *wlp = &i1480u->wlp;
- struct uwb_rc *rc = wlp->rc;
BUG_ON(wlp->rc == NULL);
wlp_wss_remove(&wlp->wss);
- uwb_notifs_deregister(rc, &i1480u->uwb_notifs_handler);
netif_carrier_off(net_dev);
#ifdef i1480u_FLOW_CONTROL
usb_kill_urb(i1480u->notif_urb);
#endif
netif_stop_queue(net_dev);
+ uwb_radio_stop(&wlp->pal);
i1480u_rx_release(i1480u);
i1480u_tx_release(i1480u);
return 0;
@@ -303,34 +302,6 @@
return 0;
}
-
-/**
- * Callback function to handle events from UWB
- * When we see other devices we know the carrier is ok,
- * if we are the only device in the beacon group we set the carrier
- * state to off.
- * */
-void i1480u_uwb_notifs_cb(void *data, struct uwb_dev *uwb_dev,
- enum uwb_notifs event)
-{
- struct i1480u *i1480u = data;
- struct net_device *net_dev = i1480u->net_dev;
- struct device *dev = &i1480u->usb_iface->dev;
- switch (event) {
- case UWB_NOTIF_BG_JOIN:
- netif_carrier_on(net_dev);
- dev_info(dev, "Link is up\n");
- break;
- case UWB_NOTIF_BG_LEAVE:
- netif_carrier_off(net_dev);
- dev_info(dev, "Link is down\n");
- break;
- default:
- dev_err(dev, "don't know how to handle event %d from uwb\n",
- event);
- }
-}
-
/**
* Stop the network queue
*
diff --git a/drivers/uwb/i1480/i1480u-wlp/rx.c b/drivers/uwb/i1480/i1480u-wlp/rx.c
index 9fc0353..34f4cf9 100644
--- a/drivers/uwb/i1480/i1480u-wlp/rx.c
+++ b/drivers/uwb/i1480/i1480u-wlp/rx.c
@@ -68,11 +68,7 @@
#include <linux/etherdevice.h>
#include "i1480u-wlp.h"
-#define D_LOCAL 0
-#include <linux/uwb/debug.h>
-
-
-/**
+/*
* Setup the RX context
*
* Each URB is provided with a transfer_buffer that is the data field
@@ -129,7 +125,7 @@
}
-/** Release resources associated to the rx context */
+/* Release resources associated to the rx context */
void i1480u_rx_release(struct i1480u *i1480u)
{
int cnt;
@@ -155,7 +151,7 @@
}
}
-/** Fix an out-of-sequence packet */
+/* Fix an out-of-sequence packet */
#define i1480u_fix(i1480u, msg...) \
do { \
if (printk_ratelimit()) \
@@ -166,7 +162,7 @@
} while (0)
-/** Drop an out-of-sequence packet */
+/* Drop an out-of-sequence packet */
#define i1480u_drop(i1480u, msg...) \
do { \
if (printk_ratelimit()) \
@@ -177,7 +173,7 @@
-/** Finalizes setting up the SKB and delivers it
+/* Finalizes setting up the SKB and delivers it
*
* We first pass the incoming frame to WLP substack for verification. It
* may also be a WLP association frame in which case WLP will take over the
@@ -192,18 +188,11 @@
struct net_device *net_dev = i1480u->net_dev;
struct device *dev = &i1480u->usb_iface->dev;
- d_printf(6, dev, "RX delivered pre skb(%p), %u bytes\n",
- i1480u->rx_skb, i1480u->rx_skb->len);
- d_dump(7, dev, i1480u->rx_skb->data, i1480u->rx_skb->len);
should_parse = wlp_receive_frame(dev, &i1480u->wlp, i1480u->rx_skb,
&i1480u->rx_srcaddr);
if (!should_parse)
goto out;
i1480u->rx_skb->protocol = eth_type_trans(i1480u->rx_skb, net_dev);
- d_printf(5, dev, "RX delivered skb(%p), %u bytes\n",
- i1480u->rx_skb, i1480u->rx_skb->len);
- d_dump(7, dev, i1480u->rx_skb->data,
- i1480u->rx_skb->len > 72 ? 72 : i1480u->rx_skb->len);
i1480u->stats.rx_packets++;
i1480u->stats.rx_bytes += i1480u->rx_untd_pkt_size;
net_dev->last_rx = jiffies;
@@ -216,7 +205,7 @@
}
-/**
+/*
* Process a buffer of data received from the USB RX endpoint
*
* First fragment arrives with next or last fragment. All other fragments
@@ -404,7 +393,7 @@
}
-/**
+/*
* Called when an RX URB has finished receiving or has found some kind
* of error condition.
*
diff --git a/drivers/uwb/i1480/i1480u-wlp/sysfs.c b/drivers/uwb/i1480/i1480u-wlp/sysfs.c
index a1d8ca6..4ffaf54 100644
--- a/drivers/uwb/i1480/i1480u-wlp/sysfs.c
+++ b/drivers/uwb/i1480/i1480u-wlp/sysfs.c
@@ -25,8 +25,8 @@
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
-#include <linux/uwb/debug.h>
#include <linux/device.h>
+
#include "i1480u-wlp.h"
@@ -226,7 +226,6 @@
* (CLASS_DEVICE_ATTR or DEVICE_ATTR) and i1480u_ATTR_NAME produces a
* class_device_attr_NAME or device_attr_NAME (for group registration).
*/
-#include <linux/version.h>
#define i1480u_SHOW(name, fn, param) \
static ssize_t i1480u_show_##name(struct device *dev, \
diff --git a/drivers/uwb/i1480/i1480u-wlp/tx.c b/drivers/uwb/i1480/i1480u-wlp/tx.c
index 3426bfb..39032cc 100644
--- a/drivers/uwb/i1480/i1480u-wlp/tx.c
+++ b/drivers/uwb/i1480/i1480u-wlp/tx.c
@@ -55,8 +55,6 @@
*/
#include "i1480u-wlp.h"
-#define D_LOCAL 5
-#include <linux/uwb/debug.h>
enum {
/* This is only for Next and Last TX packets */
@@ -64,7 +62,7 @@
- sizeof(struct untd_hdr_rst),
};
-/** Free resources allocated to a i1480u tx context. */
+/* Free resources allocated to a i1480u tx context. */
static
void i1480u_tx_free(struct i1480u_tx *wtx)
{
@@ -99,7 +97,7 @@
}
-/**
+/*
* Callback for a completed tx USB URB.
*
* TODO:
@@ -149,8 +147,6 @@
<= i1480u->tx_inflight.threshold
&& netif_queue_stopped(net_dev)
&& i1480u->tx_inflight.threshold != 0) {
- if (d_test(2) && printk_ratelimit())
- d_printf(2, dev, "Restart queue. \n");
netif_start_queue(net_dev);
atomic_inc(&i1480u->tx_inflight.restart_count);
}
@@ -158,7 +154,7 @@
}
-/**
+/*
* Given a buffer that doesn't fit in a single fragment, create an
* scatter/gather structure for delivery to the USB pipe.
*
@@ -253,15 +249,11 @@
/* Now do each remaining fragment */
result = -EINVAL;
while (pl_size_left > 0) {
- d_printf(5, NULL, "ITR HDR: pl_size_left %zu buf_itr %zu\n",
- pl_size_left, buf_itr - wtx->buf);
if (buf_itr + sizeof(*untd_hdr_rst) - wtx->buf
> wtx->buf_size) {
printk(KERN_ERR "BUG: no space for header\n");
goto error_bug;
}
- d_printf(5, NULL, "ITR HDR 2: pl_size_left %zu buf_itr %zu\n",
- pl_size_left, buf_itr - wtx->buf);
untd_hdr_rst = buf_itr;
buf_itr += sizeof(*untd_hdr_rst);
if (pl_size_left > i1480u_MAX_PL_SIZE) {
@@ -271,9 +263,6 @@
frg_pl_size = pl_size_left;
untd_hdr_set_type(&untd_hdr_rst->hdr, i1480u_PKT_FRAG_LST);
}
- d_printf(5, NULL,
- "ITR PL: pl_size_left %zu buf_itr %zu frg_pl_size %zu\n",
- pl_size_left, buf_itr - wtx->buf, frg_pl_size);
untd_hdr_set_rx_tx(&untd_hdr_rst->hdr, 0);
untd_hdr_rst->hdr.len = cpu_to_le16(frg_pl_size);
untd_hdr_rst->padding = 0;
@@ -286,9 +275,6 @@
buf_itr += frg_pl_size;
pl_itr += frg_pl_size;
pl_size_left -= frg_pl_size;
- d_printf(5, NULL,
- "ITR PL 2: pl_size_left %zu buf_itr %zu frg_pl_size %zu\n",
- pl_size_left, buf_itr - wtx->buf, frg_pl_size);
}
dev_kfree_skb_irq(skb);
return 0;
@@ -308,7 +294,7 @@
}
-/**
+/*
* Given a buffer that fits in a single fragment, fill out a @wtx
* struct for transmitting it down the USB pipe.
*
@@ -346,7 +332,7 @@
}
-/**
+/*
* Given a skb to transmit, massage it to become palatable for the TX pipe
*
* This will break the buffer in chunks smaller than
@@ -425,7 +411,7 @@
return NULL;
}
-/**
+/*
* Actual fragmentation and transmission of frame
*
* @wlp: WLP substack data structure
@@ -447,20 +433,12 @@
struct i1480u_tx *wtx;
struct wlp_tx_hdr *wlp_tx_hdr;
static unsigned char dev_bcast[2] = { 0xff, 0xff };
-#if 0
- int lockup = 50;
-#endif
- d_fnstart(6, dev, "(skb %p (%u), net_dev %p)\n", skb, skb->len,
- net_dev);
BUG_ON(i1480u->wlp.rc == NULL);
if ((net_dev->flags & IFF_UP) == 0)
goto out;
result = -EBUSY;
if (atomic_read(&i1480u->tx_inflight.count) >= i1480u->tx_inflight.max) {
- if (d_test(2) && printk_ratelimit())
- d_printf(2, dev, "Max frames in flight "
- "stopping queue.\n");
netif_stop_queue(net_dev);
goto error_max_inflight;
}
@@ -489,21 +467,6 @@
wlp_tx_hdr_set_delivery_id_type(wlp_tx_hdr, i1480u->options.pca_base_priority);
}
-#if 0
- dev_info(dev, "TX delivering skb -> USB, %zu bytes\n", skb->len);
- dump_bytes(dev, skb->data, skb->len > 72 ? 72 : skb->len);
-#endif
-#if 0
- /* simulates a device lockup after every lockup# packets */
- if (lockup && ((i1480u->stats.tx_packets + 1) % lockup) == 0) {
- /* Simulate a dropped transmit interrupt */
- net_dev->trans_start = jiffies;
- netif_stop_queue(net_dev);
- dev_err(dev, "Simulate lockup at %ld\n", jiffies);
- return result;
- }
-#endif
-
result = usb_submit_urb(wtx->urb, GFP_ATOMIC); /* Go baby */
if (result < 0) {
dev_err(dev, "TX: cannot submit URB: %d\n", result);
@@ -513,8 +476,6 @@
}
atomic_inc(&i1480u->tx_inflight.count);
net_dev->trans_start = jiffies;
- d_fnend(6, dev, "(skb %p (%u), net_dev %p) = %d\n", skb, skb->len,
- net_dev, result);
return result;
error_tx_urb_submit:
@@ -522,13 +483,11 @@
error_wtx_alloc:
error_max_inflight:
out:
- d_fnend(6, dev, "(skb %p (%u), net_dev %p) = %d\n", skb, skb->len,
- net_dev, result);
return result;
}
-/**
+/*
* Transmit an skb Called when an skbuf has to be transmitted
*
* The skb is first passed to WLP substack to ensure this is a valid
@@ -551,9 +510,6 @@
struct device *dev = &i1480u->usb_iface->dev;
struct uwb_dev_addr dst;
- d_fnstart(6, dev, "(skb %p (%u), net_dev %p)\n", skb, skb->len,
- net_dev);
- BUG_ON(i1480u->wlp.rc == NULL);
if ((net_dev->flags & IFF_UP) == 0)
goto error;
result = wlp_prepare_tx_frame(dev, &i1480u->wlp, skb, &dst);
@@ -562,31 +518,25 @@
"Dropping packet.\n", result);
goto error;
} else if (result == 1) {
- d_printf(6, dev, "WLP will transmit frame. \n");
/* trans_start time will be set when WLP actually transmits
* the frame */
goto out;
}
- d_printf(6, dev, "Transmitting frame. \n");
result = i1480u_xmit_frame(&i1480u->wlp, skb, &dst);
if (result < 0) {
dev_err(dev, "Frame TX failed (%d).\n", result);
goto error;
}
- d_fnend(6, dev, "(skb %p (%u), net_dev %p) = %d\n", skb, skb->len,
- net_dev, result);
return NETDEV_TX_OK;
error:
dev_kfree_skb_any(skb);
i1480u->stats.tx_dropped++;
out:
- d_fnend(6, dev, "(skb %p (%u), net_dev %p) = %d\n", skb, skb->len,
- net_dev, result);
return NETDEV_TX_OK;
}
-/**
+/*
* Called when a pkt transmission doesn't complete in a reasonable period
* Device reset may sleep - do it outside of interrupt context (delayed)
*/
diff --git a/drivers/uwb/ie-rcv.c b/drivers/uwb/ie-rcv.c
new file mode 100644
index 0000000..917e6d7
--- /dev/null
+++ b/drivers/uwb/ie-rcv.c
@@ -0,0 +1,55 @@
+/*
+ * Ultra Wide Band
+ * IE Received notification handling.
+ *
+ * Copyright (C) 2008 Cambridge Silicon Radio Ltd.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/errno.h>
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/bitmap.h>
+#include "uwb-internal.h"
+
+/*
+ * Process an incoming IE Received notification.
+ */
+int uwbd_evt_handle_rc_ie_rcv(struct uwb_event *evt)
+{
+ int result = -EINVAL;
+ struct device *dev = &evt->rc->uwb_dev.dev;
+ struct uwb_rc_evt_ie_rcv *iercv;
+ size_t iesize;
+
+ /* Is there enough data to decode it? */
+ if (evt->notif.size < sizeof(*iercv)) {
+ dev_err(dev, "IE Received notification: Not enough data to "
+ "decode (%zu vs %zu bytes needed)\n",
+ evt->notif.size, sizeof(*iercv));
+ goto error;
+ }
+ iercv = container_of(evt->notif.rceb, struct uwb_rc_evt_ie_rcv, rceb);
+ iesize = le16_to_cpu(iercv->wIELength);
+
+ dev_dbg(dev, "IE received, element ID=%d\n", iercv->IEData[0]);
+
+ if (iercv->IEData[0] == UWB_RELINQUISH_REQUEST_IE) {
+ dev_warn(dev, "unhandled Relinquish Request IE\n");
+ }
+
+ return 0;
+error:
+ return result;
+}
diff --git a/drivers/uwb/ie.c b/drivers/uwb/ie.c
index cf6f3d1..ab97668 100644
--- a/drivers/uwb/ie.c
+++ b/drivers/uwb/ie.c
@@ -25,8 +25,6 @@
*/
#include "uwb-internal.h"
-#define D_LOCAL 0
-#include <linux/uwb/debug.h>
/**
* uwb_ie_next - get the next IE in a buffer
@@ -61,6 +59,42 @@
EXPORT_SYMBOL_GPL(uwb_ie_next);
/**
+ * uwb_ie_dump_hex - print IEs to a character buffer
+ * @ies: the IEs to print.
+ * @len: length of all the IEs.
+ * @buf: the destination buffer.
+ * @size: size of @buf.
+ *
+ * Returns the number of characters written.
+ */
+int uwb_ie_dump_hex(const struct uwb_ie_hdr *ies, size_t len,
+ char *buf, size_t size)
+{
+ void *ptr;
+ const struct uwb_ie_hdr *ie;
+ int r = 0;
+ u8 *d;
+
+ ptr = (void *)ies;
+ for (;;) {
+ ie = uwb_ie_next(&ptr, &len);
+ if (!ie)
+ break;
+
+ r += scnprintf(buf + r, size - r, "%02x %02x",
+ (unsigned)ie->element_id,
+ (unsigned)ie->length);
+ d = (uint8_t *)ie + sizeof(struct uwb_ie_hdr);
+ while (d != ptr && r < size)
+ r += scnprintf(buf + r, size - r, " %02x", (unsigned)*d++);
+ if (r < size)
+ buf[r++] = '\n';
+ };
+
+ return r;
+}
+
+/**
* Get the IEs that a radio controller is sending in its beacon
*
* @uwb_rc: UWB Radio Controller
@@ -70,6 +104,7 @@
* anything. Once done with the iedata buffer, call
* uwb_rc_ie_release(iedata). Don't call kfree on it.
*/
+static
ssize_t uwb_rc_get_ie(struct uwb_rc *uwb_rc, struct uwb_rc_evt_get_ie **pget_ie)
{
ssize_t result;
@@ -78,148 +113,35 @@
struct uwb_rceb *reply = NULL;
struct uwb_rc_evt_get_ie *get_ie;
- d_fnstart(3, dev, "(%p, %p)\n", uwb_rc, pget_ie);
- result = -ENOMEM;
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (cmd == NULL)
- goto error_kzalloc;
+ return -ENOMEM;
+
cmd->bCommandType = UWB_RC_CET_GENERAL;
cmd->wCommand = cpu_to_le16(UWB_RC_CMD_GET_IE);
result = uwb_rc_vcmd(uwb_rc, "GET_IE", cmd, sizeof(*cmd),
UWB_RC_CET_GENERAL, UWB_RC_CMD_GET_IE,
&reply);
+ kfree(cmd);
if (result < 0)
- goto error_cmd;
+ return result;
+
get_ie = container_of(reply, struct uwb_rc_evt_get_ie, rceb);
if (result < sizeof(*get_ie)) {
dev_err(dev, "not enough data returned for decoding GET IE "
"(%zu bytes received vs %zu needed)\n",
result, sizeof(*get_ie));
- result = -EINVAL;
+ return -EINVAL;
} else if (result < sizeof(*get_ie) + le16_to_cpu(get_ie->wIELength)) {
dev_err(dev, "not enough data returned for decoding GET IE "
"payload (%zu bytes received vs %zu needed)\n", result,
sizeof(*get_ie) + le16_to_cpu(get_ie->wIELength));
- result = -EINVAL;
- } else
- *pget_ie = get_ie;
-error_cmd:
- kfree(cmd);
-error_kzalloc:
- d_fnend(3, dev, "(%p, %p) = %d\n", uwb_rc, pget_ie, (int)result);
- return result;
-}
-EXPORT_SYMBOL_GPL(uwb_rc_get_ie);
-
-
-/*
- * Given a pointer to an IE, print it in ASCII/hex followed by a new line
- *
- * @ie_hdr: pointer to the IE header. Length is in there, and it is
- * guaranteed that the ie_hdr->length bytes following it are
- * safely accesible.
- *
- * @_data: context data passed from uwb_ie_for_each(), an struct output_ctx
- */
-int uwb_ie_dump_hex(struct uwb_dev *uwb_dev, const struct uwb_ie_hdr *ie_hdr,
- size_t offset, void *_ctx)
-{
- struct uwb_buf_ctx *ctx = _ctx;
- const u8 *pl = (void *)(ie_hdr + 1);
- u8 pl_itr;
-
- ctx->bytes += scnprintf(ctx->buf + ctx->bytes, ctx->size - ctx->bytes,
- "%02x %02x ", (unsigned) ie_hdr->element_id,
- (unsigned) ie_hdr->length);
- pl_itr = 0;
- while (pl_itr < ie_hdr->length && ctx->bytes < ctx->size)
- ctx->bytes += scnprintf(ctx->buf + ctx->bytes,
- ctx->size - ctx->bytes,
- "%02x ", (unsigned) pl[pl_itr++]);
- if (ctx->bytes < ctx->size)
- ctx->buf[ctx->bytes++] = '\n';
- return 0;
-}
-EXPORT_SYMBOL_GPL(uwb_ie_dump_hex);
-
-
-/**
- * Verify that a pointer in a buffer points to valid IE
- *
- * @start: pointer to start of buffer in which IE appears
- * @itr: pointer to IE inside buffer that will be verified
- * @top: pointer to end of buffer
- *
- * @returns: 0 if IE is valid, <0 otherwise
- *
- * Verification involves checking that the buffer can contain a
- * header and the amount of data reported in the IE header can be found in
- * the buffer.
- */
-static
-int uwb_rc_ie_verify(struct uwb_dev *uwb_dev, const void *start,
- const void *itr, const void *top)
-{
- struct device *dev = &uwb_dev->dev;
- const struct uwb_ie_hdr *ie_hdr;
-
- if (top - itr < sizeof(*ie_hdr)) {
- dev_err(dev, "Bad IE: no data to decode header "
- "(%zu bytes left vs %zu needed) at offset %zu\n",
- top - itr, sizeof(*ie_hdr), itr - start);
return -EINVAL;
}
- ie_hdr = itr;
- itr += sizeof(*ie_hdr);
- if (top - itr < ie_hdr->length) {
- dev_err(dev, "Bad IE: not enough data for payload "
- "(%zu bytes left vs %zu needed) at offset %zu\n",
- top - itr, (size_t)ie_hdr->length,
- (void *)ie_hdr - start);
- return -EINVAL;
- }
- return 0;
-}
-
-/**
- * Walk a buffer filled with consecutive IE's a buffer
- *
- * @uwb_dev: UWB device this IEs belong to (for err messages mainly)
- *
- * @fn: function to call with each IE; if it returns 0, we keep
- * traversing the buffer. If it returns !0, we'll stop and return
- * that value.
- *
- * @data: pointer passed to @fn
- *
- * @buf: buffer where the consecutive IEs are located
- *
- * @size: size of @buf
- *
- * Each IE is checked for basic correctness (there is space left for
- * the header and the payload). If that test is failed, we stop
- * processing. For every good IE, @fn is called.
- */
-ssize_t uwb_ie_for_each(struct uwb_dev *uwb_dev, uwb_ie_f fn, void *data,
- const void *buf, size_t size)
-{
- ssize_t result = 0;
- const struct uwb_ie_hdr *ie_hdr;
- const void *itr = buf, *top = itr + size;
-
- while (itr < top) {
- if (uwb_rc_ie_verify(uwb_dev, buf, itr, top) != 0)
- break;
- ie_hdr = itr;
- itr += sizeof(*ie_hdr) + ie_hdr->length;
- result = fn(uwb_dev, ie_hdr, itr - buf, data);
- if (result != 0)
- break;
- }
+ *pget_ie = get_ie;
return result;
}
-EXPORT_SYMBOL_GPL(uwb_ie_for_each);
/**
@@ -256,70 +178,6 @@
return result;
}
-/**
- * Determine by IE id if IE is host settable
- * WUSB 1.0 [8.6.2.8 Table 8.85]
- *
- * EXCEPTION:
- * All but UWB_IE_WLP appears in Table 8.85 from WUSB 1.0. Setting this IE
- * is required for the WLP substack to perform association with its WSS so
- * we hope that the WUSB spec will be changed to reflect this.
- */
-static
-int uwb_rc_ie_is_host_settable(enum uwb_ie element_id)
-{
- if (element_id == UWB_PCA_AVAILABILITY ||
- element_id == UWB_BP_SWITCH_IE ||
- element_id == UWB_MAC_CAPABILITIES_IE ||
- element_id == UWB_PHY_CAPABILITIES_IE ||
- element_id == UWB_APP_SPEC_PROBE_IE ||
- element_id == UWB_IDENTIFICATION_IE ||
- element_id == UWB_MASTER_KEY_ID_IE ||
- element_id == UWB_IE_WLP ||
- element_id == UWB_APP_SPEC_IE)
- return 1;
- return 0;
-}
-
-
-/**
- * Extract Host Settable IEs from IE
- *
- * @ie_data: pointer to buffer containing all IEs
- * @size: size of buffer
- *
- * @returns: length of buffer that only includes host settable IEs
- *
- * Given a buffer of IEs we move all Host Settable IEs to front of buffer
- * by overwriting the IEs that are not Host Settable.
- * Buffer length is adjusted accordingly.
- */
-static
-ssize_t uwb_rc_parse_host_settable_ie(struct uwb_dev *uwb_dev,
- void *ie_data, size_t size)
-{
- size_t new_len = size;
- struct uwb_ie_hdr *ie_hdr;
- size_t ie_length;
- void *itr = ie_data, *top = itr + size;
-
- while (itr < top) {
- if (uwb_rc_ie_verify(uwb_dev, ie_data, itr, top) != 0)
- break;
- ie_hdr = itr;
- ie_length = sizeof(*ie_hdr) + ie_hdr->length;
- if (uwb_rc_ie_is_host_settable(ie_hdr->element_id)) {
- itr += ie_length;
- } else {
- memmove(itr, itr + ie_length, top - (itr + ie_length));
- new_len -= ie_length;
- top -= ie_length;
- }
- }
- return new_len;
-}
-
-
/* Cleanup the whole IE management subsystem */
void uwb_rc_ie_init(struct uwb_rc *uwb_rc)
{
@@ -328,49 +186,34 @@
/**
- * Set up cache for host settable IEs currently being transmitted
+ * uwb_rc_ie_setup - setup a radio controller's IE manager
+ * @uwb_rc: the radio controller.
*
- * First we just call GET-IE to get the current IEs being transmitted
- * (or we workaround and pretend we did) and (because the format is
- * the same) reuse that as the IE cache (with the command prefix, as
- * explained in 'struct uwb_rc').
+ * The current set of IEs are obtained from the hardware with a GET-IE
+ * command (since the radio controller is not yet beaconing this will
+ * be just the hardware's MAC and PHY Capability IEs).
*
- * @returns: size of cache created
+ * Returns 0 on success; -ve on an error.
*/
-ssize_t uwb_rc_ie_setup(struct uwb_rc *uwb_rc)
+int uwb_rc_ie_setup(struct uwb_rc *uwb_rc)
{
- struct device *dev = &uwb_rc->uwb_dev.dev;
- ssize_t result;
- size_t capacity;
- struct uwb_rc_evt_get_ie *ie_info;
+ struct uwb_rc_evt_get_ie *ie_info = NULL;
+ int capacity;
- d_fnstart(3, dev, "(%p)\n", uwb_rc);
+ capacity = uwb_rc_get_ie(uwb_rc, &ie_info);
+ if (capacity < 0)
+ return capacity;
+
mutex_lock(&uwb_rc->ies_mutex);
- result = uwb_rc_get_ie(uwb_rc, &ie_info);
- if (result < 0)
- goto error_get_ie;
- capacity = result;
- d_printf(5, dev, "Got IEs %zu bytes (%zu long at %p)\n", result,
- (size_t)le16_to_cpu(ie_info->wIELength), ie_info);
- /* Remove IEs that host should not set. */
- result = uwb_rc_parse_host_settable_ie(&uwb_rc->uwb_dev,
- ie_info->IEData, le16_to_cpu(ie_info->wIELength));
- if (result < 0)
- goto error_parse;
- d_printf(5, dev, "purged non-settable IEs to %zu bytes\n", result);
- uwb_rc->ies = (void *) ie_info;
+ uwb_rc->ies = (struct uwb_rc_cmd_set_ie *)ie_info;
uwb_rc->ies->rccb.bCommandType = UWB_RC_CET_GENERAL;
uwb_rc->ies->rccb.wCommand = cpu_to_le16(UWB_RC_CMD_SET_IE);
uwb_rc->ies_capacity = capacity;
- d_printf(5, dev, "IE cache at %p %zu bytes, %zu capacity\n",
- ie_info, result, capacity);
- result = 0;
-error_parse:
-error_get_ie:
+
mutex_unlock(&uwb_rc->ies_mutex);
- d_fnend(3, dev, "(%p) = %zu\n", uwb_rc, result);
- return result;
+
+ return 0;
}
@@ -383,26 +226,47 @@
}
-static
-int __acc_size(struct uwb_dev *uwb_dev, const struct uwb_ie_hdr *ie_hdr,
- size_t offset, void *_ctx)
+static int uwb_rc_ie_add_one(struct uwb_rc *rc, const struct uwb_ie_hdr *new_ie)
{
- size_t *acc_size = _ctx;
- *acc_size += sizeof(*ie_hdr) + ie_hdr->length;
- d_printf(6, &uwb_dev->dev, "new acc size %zu\n", *acc_size);
+ struct uwb_rc_cmd_set_ie *new_ies;
+ void *ptr, *prev_ie;
+ struct uwb_ie_hdr *ie;
+ size_t length, new_ie_len, new_capacity, size, prev_size;
+
+ length = le16_to_cpu(rc->ies->wIELength);
+ new_ie_len = sizeof(struct uwb_ie_hdr) + new_ie->length;
+ new_capacity = sizeof(struct uwb_rc_cmd_set_ie) + length + new_ie_len;
+
+ if (new_capacity > rc->ies_capacity) {
+ new_ies = krealloc(rc->ies, new_capacity, GFP_KERNEL);
+ if (!new_ies)
+ return -ENOMEM;
+ rc->ies = new_ies;
+ }
+
+ ptr = rc->ies->IEData;
+ size = length;
+ for (;;) {
+ prev_ie = ptr;
+ prev_size = size;
+ ie = uwb_ie_next(&ptr, &size);
+ if (!ie || ie->element_id > new_ie->element_id)
+ break;
+ }
+
+ memmove(prev_ie + new_ie_len, prev_ie, prev_size);
+ memcpy(prev_ie, new_ie, new_ie_len);
+ rc->ies->wIELength = cpu_to_le16(length + new_ie_len);
+
return 0;
}
-
/**
- * Add a new IE to IEs currently being transmitted by device
- *
+ * uwb_rc_ie_add - add new IEs to the radio controller's beacon
+ * @uwb_rc: the radio controller.
* @ies: the buffer containing the new IE or IEs to be added to
- * the device's beacon. The buffer will be verified for
- * consistence (meaning the headers should be right) and
- * consistent with the buffer size.
- * @size: size of @ies (in bytes, total buffer size)
- * @returns: 0 if ok, <0 errno code on error
+ * the device's beacon.
+ * @size: length of all the IEs.
*
* According to WHCI 0.95 [4.13.6] the driver will only receive the RCEB
* after the device sent the first beacon that includes the IEs specified
@@ -411,66 +275,40 @@
* we start beaconing.
*
* Setting an IE on the device will overwrite all current IEs in device. So
- * we take the current IEs being transmitted by the device, append the
+ * we take the current IEs being transmitted by the device, insert the
* new one, and call SET IE with all the IEs needed.
*
- * The local IE cache will only be updated with the new IE if SET IE
- * completed successfully.
+ * Returns 0 on success; or -ENOMEM.
*/
int uwb_rc_ie_add(struct uwb_rc *uwb_rc,
const struct uwb_ie_hdr *ies, size_t size)
{
int result = 0;
- struct device *dev = &uwb_rc->uwb_dev.dev;
- struct uwb_rc_cmd_set_ie *new_ies;
- size_t ies_size, total_size, acc_size = 0;
+ void *ptr;
+ const struct uwb_ie_hdr *ie;
- if (uwb_rc->ies == NULL)
- return -ESHUTDOWN;
- uwb_ie_for_each(&uwb_rc->uwb_dev, __acc_size, &acc_size, ies, size);
- if (acc_size != size) {
- dev_err(dev, "BUG: bad IEs, misconstructed headers "
- "[%zu bytes reported vs %zu calculated]\n",
- size, acc_size);
- WARN_ON(1);
- return -EINVAL;
- }
mutex_lock(&uwb_rc->ies_mutex);
- ies_size = le16_to_cpu(uwb_rc->ies->wIELength);
- total_size = sizeof(*uwb_rc->ies) + ies_size;
- if (total_size + size > uwb_rc->ies_capacity) {
- d_printf(4, dev, "Reallocating IE cache from %p capacity %zu "
- "to capacity %zu\n", uwb_rc->ies, uwb_rc->ies_capacity,
- total_size + size);
- new_ies = kzalloc(total_size + size, GFP_KERNEL);
- if (new_ies == NULL) {
- dev_err(dev, "No memory for adding new IE\n");
- result = -ENOMEM;
- goto error_alloc;
- }
- memcpy(new_ies, uwb_rc->ies, total_size);
- uwb_rc->ies_capacity = total_size + size;
- kfree(uwb_rc->ies);
- uwb_rc->ies = new_ies;
- d_printf(4, dev, "New IE cache at %p capacity %zu\n",
- uwb_rc->ies, uwb_rc->ies_capacity);
+
+ ptr = (void *)ies;
+ for (;;) {
+ ie = uwb_ie_next(&ptr, &size);
+ if (!ie)
+ break;
+
+ result = uwb_rc_ie_add_one(uwb_rc, ie);
+ if (result < 0)
+ break;
}
- memcpy((void *)uwb_rc->ies + total_size, ies, size);
- uwb_rc->ies->wIELength = cpu_to_le16(ies_size + size);
- if (uwb_rc->beaconing != -1) {
- result = uwb_rc_set_ie(uwb_rc, uwb_rc->ies);
- if (result < 0) {
- dev_err(dev, "Cannot set new IE on device: %d\n",
- result);
- uwb_rc->ies->wIELength = cpu_to_le16(ies_size);
+ if (result >= 0) {
+ if (size == 0) {
+ if (uwb_rc->beaconing != -1)
+ result = uwb_rc_set_ie(uwb_rc, uwb_rc->ies);
} else
- result = 0;
+ result = -EINVAL;
}
- d_printf(4, dev, "IEs now occupy %hu bytes of %zu capacity at %p\n",
- le16_to_cpu(uwb_rc->ies->wIELength), uwb_rc->ies_capacity,
- uwb_rc->ies);
-error_alloc:
+
mutex_unlock(&uwb_rc->ies_mutex);
+
return result;
}
EXPORT_SYMBOL_GPL(uwb_rc_ie_add);
@@ -489,53 +327,52 @@
* beacon. We don't reallocate, we just mark the size smaller.
*/
static
-int uwb_rc_ie_cache_rm(struct uwb_rc *uwb_rc, enum uwb_ie to_remove)
+void uwb_rc_ie_cache_rm(struct uwb_rc *uwb_rc, enum uwb_ie to_remove)
{
- struct uwb_ie_hdr *ie_hdr;
- size_t new_len = le16_to_cpu(uwb_rc->ies->wIELength);
- void *itr = uwb_rc->ies->IEData;
- void *top = itr + new_len;
+ struct uwb_ie_hdr *ie;
+ size_t len = le16_to_cpu(uwb_rc->ies->wIELength);
+ void *ptr;
+ size_t size;
- while (itr < top) {
- ie_hdr = itr;
- if (ie_hdr->element_id != to_remove) {
- itr += sizeof(*ie_hdr) + ie_hdr->length;
- } else {
- int ie_length;
- ie_length = sizeof(*ie_hdr) + ie_hdr->length;
- if (top - itr != ie_length)
- memmove(itr, itr + ie_length, top - itr + ie_length);
- top -= ie_length;
- new_len -= ie_length;
+ ptr = uwb_rc->ies->IEData;
+ size = len;
+ for (;;) {
+ ie = uwb_ie_next(&ptr, &size);
+ if (!ie)
+ break;
+ if (ie->element_id == to_remove) {
+ len -= sizeof(struct uwb_ie_hdr) + ie->length;
+ memmove(ie, ptr, size);
+ ptr = ie;
}
}
- uwb_rc->ies->wIELength = cpu_to_le16(new_len);
- return 0;
+ uwb_rc->ies->wIELength = cpu_to_le16(len);
}
/**
- * Remove an IE currently being transmitted by device
+ * uwb_rc_ie_rm - remove an IE from the radio controller's beacon
+ * @uwb_rc: the radio controller.
+ * @element_id: the element ID of the IE to remove.
*
- * @element_id: id of IE to be removed from device's beacon
+ * Only IEs previously added with uwb_rc_ie_add() may be removed.
+ *
+ * Returns 0 on success; or -ve the SET-IE command to the radio
+ * controller failed.
*/
int uwb_rc_ie_rm(struct uwb_rc *uwb_rc, enum uwb_ie element_id)
{
- struct device *dev = &uwb_rc->uwb_dev.dev;
- int result;
+ int result = 0;
- if (uwb_rc->ies == NULL)
- return -ESHUTDOWN;
mutex_lock(&uwb_rc->ies_mutex);
- result = uwb_rc_ie_cache_rm(uwb_rc, element_id);
- if (result < 0)
- dev_err(dev, "Cannot remove IE from cache.\n");
- if (uwb_rc->beaconing != -1) {
+
+ uwb_rc_ie_cache_rm(uwb_rc, element_id);
+
+ if (uwb_rc->beaconing != -1)
result = uwb_rc_set_ie(uwb_rc, uwb_rc->ies);
- if (result < 0)
- dev_err(dev, "Cannot set new IE on device.\n");
- }
+
mutex_unlock(&uwb_rc->ies_mutex);
+
return result;
}
EXPORT_SYMBOL_GPL(uwb_rc_ie_rm);
diff --git a/drivers/uwb/lc-dev.c b/drivers/uwb/lc-dev.c
index 15f856c..e9fe1bb 100644
--- a/drivers/uwb/lc-dev.c
+++ b/drivers/uwb/lc-dev.c
@@ -22,7 +22,6 @@
*
* FIXME: docs
*/
-
#include <linux/kernel.h>
#include <linux/device.h>
#include <linux/err.h>
@@ -30,10 +29,6 @@
#include <linux/random.h>
#include "uwb-internal.h"
-#define D_LOCAL 1
-#include <linux/uwb/debug.h>
-
-
/* We initialize addresses to 0xff (invalid, as it is bcast) */
static inline void uwb_dev_addr_init(struct uwb_dev_addr *addr)
{
@@ -104,12 +99,9 @@
{
struct uwb_dev *uwb_dev = to_uwb_dev(dev);
- d_fnstart(4, NULL, "(dev %p uwb_dev %p)\n", dev, uwb_dev);
uwb_bce_put(uwb_dev->bce);
- d_printf(0, &uwb_dev->dev, "uwb_dev %p freed\n", uwb_dev);
memset(uwb_dev, 0x69, sizeof(*uwb_dev));
kfree(uwb_dev);
- d_fnend(4, NULL, "(dev %p uwb_dev %p) = void\n", dev, uwb_dev);
}
/*
@@ -275,12 +267,8 @@
*/
static int __uwb_dev_sys_add(struct uwb_dev *uwb_dev, struct device *parent_dev)
{
- int result;
struct device *dev;
- d_fnstart(4, NULL, "(uwb_dev %p parent_dev %p)\n", uwb_dev, parent_dev);
- BUG_ON(parent_dev == NULL);
-
dev = &uwb_dev->dev;
/* Device sysfs files are only useful for neighbor devices not
local radio controllers. */
@@ -289,18 +277,14 @@
dev->parent = parent_dev;
dev_set_drvdata(dev, uwb_dev);
- result = device_add(dev);
- d_fnend(4, NULL, "(uwb_dev %p parent_dev %p) = %d\n", uwb_dev, parent_dev, result);
- return result;
+ return device_add(dev);
}
static void __uwb_dev_sys_rm(struct uwb_dev *uwb_dev)
{
- d_fnstart(4, NULL, "(uwb_dev %p)\n", uwb_dev);
dev_set_drvdata(&uwb_dev->dev, NULL);
device_del(&uwb_dev->dev);
- d_fnend(4, NULL, "(uwb_dev %p) = void\n", uwb_dev);
}
@@ -384,7 +368,6 @@
struct device *dev = &uwb_dev->dev;
char macbuf[UWB_ADDR_STRSIZE], devbuf[UWB_ADDR_STRSIZE];
- d_fnstart(3, NULL, "(dev %p [uwb_dev %p], uwb_rc %p)\n", dev, uwb_dev, rc);
uwb_mac_addr_print(macbuf, sizeof(macbuf), &uwb_dev->mac_addr);
uwb_dev_addr_print(devbuf, sizeof(devbuf), &uwb_dev->dev_addr);
dev_info(dev, "uwb device (mac %s dev %s) disconnected from %s %s\n",
@@ -392,8 +375,10 @@
rc ? rc->uwb_dev.dev.parent->bus->name : "n/a",
rc ? dev_name(rc->uwb_dev.dev.parent) : "");
uwb_dev_rm(uwb_dev);
+ list_del(&uwb_dev->bce->node);
+ uwb_bce_put(uwb_dev->bce);
uwb_dev_put(uwb_dev); /* for the creation in _onair() */
- d_fnend(3, NULL, "(dev %p [uwb_dev %p], uwb_rc %p) = 0\n", dev, uwb_dev, rc);
+
return 0;
}
diff --git a/drivers/uwb/lc-rc.c b/drivers/uwb/lc-rc.c
index ee5772f..9cf21e6 100644
--- a/drivers/uwb/lc-rc.c
+++ b/drivers/uwb/lc-rc.c
@@ -36,8 +36,6 @@
#include <linux/etherdevice.h>
#include <linux/usb.h>
-#define D_LOCAL 1
-#include <linux/uwb/debug.h>
#include "uwb-internal.h"
static int uwb_rc_index_match(struct device *dev, void *data)
@@ -81,9 +79,7 @@
struct uwb_dev *uwb_dev = container_of(dev, struct uwb_dev, dev);
struct uwb_rc *rc = container_of(uwb_dev, struct uwb_rc, uwb_dev);
- uwb_rc_neh_destroy(rc);
uwb_rc_ie_release(rc);
- d_printf(1, dev, "freed uwb_rc %p\n", rc);
kfree(rc);
}
@@ -100,6 +96,8 @@
rc->scan_type = UWB_SCAN_DISABLED;
INIT_LIST_HEAD(&rc->notifs_chain.list);
mutex_init(&rc->notifs_chain.mutex);
+ INIT_LIST_HEAD(&rc->uwb_beca.list);
+ mutex_init(&rc->uwb_beca.mutex);
uwb_drp_avail_init(rc);
uwb_rc_ie_init(rc);
uwb_rsv_init(rc);
@@ -191,9 +189,9 @@
int result;
struct device *dev = &rc->uwb_dev.dev;
- result = uwb_rc_reset(rc);
+ result = uwb_radio_setup(rc);
if (result < 0) {
- dev_err(dev, "cannot reset UWB radio: %d\n", result);
+ dev_err(dev, "cannot setup UWB radio: %d\n", result);
goto error;
}
result = uwb_rc_mac_addr_setup(rc);
@@ -250,6 +248,12 @@
rc->priv = priv;
+ init_waitqueue_head(&rc->uwbd.wq);
+ INIT_LIST_HEAD(&rc->uwbd.event_list);
+ spin_lock_init(&rc->uwbd.event_list_lock);
+
+ uwbd_start(rc);
+
result = rc->start(rc);
if (result < 0)
goto error_rc_start;
@@ -284,7 +288,7 @@
error_dev_add:
error_rc_setup:
rc->stop(rc);
- uwbd_flush(rc);
+ uwbd_stop(rc);
error_rc_start:
return result;
}
@@ -306,25 +310,24 @@
rc->ready = 0;
uwb_dbg_del_rc(rc);
- uwb_rsv_cleanup(rc);
- uwb_rc_ie_rm(rc, UWB_IDENTIFICATION_IE);
- if (rc->beaconing >= 0)
- uwb_rc_beacon(rc, -1, 0);
- if (rc->scan_type != UWB_SCAN_DISABLED)
- uwb_rc_scan(rc, rc->scanning, UWB_SCAN_DISABLED, 0);
- uwb_rc_reset(rc);
+ uwb_rsv_remove_all(rc);
+ uwb_radio_shutdown(rc);
rc->stop(rc);
- uwbd_flush(rc);
+
+ uwbd_stop(rc);
+ uwb_rc_neh_destroy(rc);
uwb_dev_lock(&rc->uwb_dev);
rc->priv = NULL;
rc->cmd = NULL;
uwb_dev_unlock(&rc->uwb_dev);
- mutex_lock(&uwb_beca.mutex);
+ mutex_lock(&rc->uwb_beca.mutex);
uwb_dev_for_each(rc, uwb_dev_offair_helper, NULL);
__uwb_rc_sys_rm(rc);
- mutex_unlock(&uwb_beca.mutex);
+ mutex_unlock(&rc->uwb_beca.mutex);
+ uwb_rsv_cleanup(rc);
+ uwb_beca_release(rc);
uwb_dev_rm(&rc->uwb_dev);
}
EXPORT_SYMBOL_GPL(uwb_rc_rm);
@@ -468,28 +471,3 @@
__uwb_rc_put(rc);
}
EXPORT_SYMBOL_GPL(uwb_rc_put);
-
-/*
- *
- *
- */
-ssize_t uwb_rc_print_IEs(struct uwb_rc *uwb_rc, char *buf, size_t size)
-{
- ssize_t result;
- struct uwb_rc_evt_get_ie *ie_info;
- struct uwb_buf_ctx ctx;
-
- result = uwb_rc_get_ie(uwb_rc, &ie_info);
- if (result < 0)
- goto error_get_ie;
- ctx.buf = buf;
- ctx.size = size;
- ctx.bytes = 0;
- uwb_ie_for_each(&uwb_rc->uwb_dev, uwb_ie_dump_hex, &ctx,
- ie_info->IEData, result - sizeof(*ie_info));
- result = ctx.bytes;
- kfree(ie_info);
-error_get_ie:
- return result;
-}
-
diff --git a/drivers/uwb/neh.c b/drivers/uwb/neh.c
index 9b4eb64..0af8916 100644
--- a/drivers/uwb/neh.c
+++ b/drivers/uwb/neh.c
@@ -86,8 +86,6 @@
#include <linux/err.h>
#include "uwb-internal.h"
-#define D_LOCAL 0
-#include <linux/uwb/debug.h>
/*
* UWB Radio Controller Notification/Event Handle
@@ -254,7 +252,6 @@
static void __uwb_rc_neh_rm(struct uwb_rc *rc, struct uwb_rc_neh *neh)
{
- del_timer(&neh->timer);
__uwb_rc_ctx_put(rc, neh);
list_del(&neh->list_node);
}
@@ -275,6 +272,7 @@
__uwb_rc_neh_rm(rc, neh);
spin_unlock_irqrestore(&rc->neh_lock, flags);
+ del_timer_sync(&neh->timer);
uwb_rc_neh_put(neh);
}
@@ -349,7 +347,7 @@
}
-/**
+/*
* Process notifications coming from the radio control interface
*
* @rc: UWB Radio Control Interface descriptor
@@ -401,23 +399,6 @@
uwb_evt->notif.size = size;
uwb_evt->notif.rceb = rceb;
- switch (le16_to_cpu(rceb->wEvent)) {
- /* Trap some vendor specific events
- *
- * FIXME: move this to handling in ptc-est, where we
- * register a NULL event handler for these two guys
- * using the Intel IDs.
- */
- case 0x0103:
- dev_info(dev, "FIXME: DEVICE ADD\n");
- return;
- case 0x0104:
- dev_info(dev, "FIXME: DEVICE RM\n");
- return;
- default:
- break;
- }
-
uwbd_event_queue(uwb_evt);
}
@@ -438,9 +419,10 @@
rceb->bEventContext, size);
} else {
neh = uwb_rc_neh_lookup(rc, rceb);
- if (neh)
+ if (neh) {
+ del_timer_sync(&neh->timer);
uwb_rc_neh_cb(neh, rceb, size);
- else
+ } else
dev_warn(dev, "event 0x%02x/%04x/%02x (%zu bytes): nobody cared\n",
rceb->bEventType, le16_to_cpu(rceb->wEvent),
rceb->bEventContext, size);
@@ -495,8 +477,6 @@
size_t size, real_size, event_size;
int needtofree;
- d_fnstart(3, dev, "(rc %p buf %p %zu buf_size)\n", rc, buf, buf_size);
- d_printf(2, dev, "groking event block: %zu bytes\n", buf_size);
itr = buf;
size = buf_size;
while (size > 0) {
@@ -544,10 +524,7 @@
itr += real_size;
size -= real_size;
- d_printf(2, dev, "consumed %zd bytes, %zu left\n",
- event_size, size);
}
- d_fnend(3, dev, "(rc %p buf %p %zu buf_size) = void\n", rc, buf, buf_size);
}
EXPORT_SYMBOL_GPL(uwb_rc_neh_grok);
@@ -562,16 +539,22 @@
*/
void uwb_rc_neh_error(struct uwb_rc *rc, int error)
{
- struct uwb_rc_neh *neh, *next;
+ struct uwb_rc_neh *neh;
unsigned long flags;
- BUG_ON(error >= 0);
- spin_lock_irqsave(&rc->neh_lock, flags);
- list_for_each_entry_safe(neh, next, &rc->neh_list, list_node) {
+ for (;;) {
+ spin_lock_irqsave(&rc->neh_lock, flags);
+ if (list_empty(&rc->neh_list)) {
+ spin_unlock_irqrestore(&rc->neh_lock, flags);
+ break;
+ }
+ neh = list_first_entry(&rc->neh_list, struct uwb_rc_neh, list_node);
__uwb_rc_neh_rm(rc, neh);
+ spin_unlock_irqrestore(&rc->neh_lock, flags);
+
+ del_timer_sync(&neh->timer);
uwb_rc_neh_cb(neh, NULL, error);
}
- spin_unlock_irqrestore(&rc->neh_lock, flags);
}
EXPORT_SYMBOL_GPL(uwb_rc_neh_error);
@@ -583,10 +566,14 @@
unsigned long flags;
spin_lock_irqsave(&rc->neh_lock, flags);
- __uwb_rc_neh_rm(rc, neh);
+ if (neh->context)
+ __uwb_rc_neh_rm(rc, neh);
+ else
+ neh = NULL;
spin_unlock_irqrestore(&rc->neh_lock, flags);
- uwb_rc_neh_cb(neh, NULL, -ETIMEDOUT);
+ if (neh)
+ uwb_rc_neh_cb(neh, NULL, -ETIMEDOUT);
}
/** Initializes the @rc's neh subsystem
@@ -605,12 +592,19 @@
void uwb_rc_neh_destroy(struct uwb_rc *rc)
{
unsigned long flags;
- struct uwb_rc_neh *neh, *next;
+ struct uwb_rc_neh *neh;
- spin_lock_irqsave(&rc->neh_lock, flags);
- list_for_each_entry_safe(neh, next, &rc->neh_list, list_node) {
+ for (;;) {
+ spin_lock_irqsave(&rc->neh_lock, flags);
+ if (list_empty(&rc->neh_list)) {
+ spin_unlock_irqrestore(&rc->neh_lock, flags);
+ break;
+ }
+ neh = list_first_entry(&rc->neh_list, struct uwb_rc_neh, list_node);
__uwb_rc_neh_rm(rc, neh);
+ spin_unlock_irqrestore(&rc->neh_lock, flags);
+
+ del_timer_sync(&neh->timer);
uwb_rc_neh_put(neh);
}
- spin_unlock_irqrestore(&rc->neh_lock, flags);
}
diff --git a/drivers/uwb/pal.c b/drivers/uwb/pal.c
index 1afb38e..99a19c1 100644
--- a/drivers/uwb/pal.c
+++ b/drivers/uwb/pal.c
@@ -16,6 +16,7 @@
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <linux/kernel.h>
+#include <linux/debugfs.h>
#include <linux/uwb.h>
#include "uwb-internal.h"
@@ -32,13 +33,13 @@
/**
* uwb_pal_register - register a UWB PAL
- * @rc: the radio controller the PAL will be using
* @pal: the PAL
*
* The PAL must be initialized with uwb_pal_init().
*/
-int uwb_pal_register(struct uwb_rc *rc, struct uwb_pal *pal)
+int uwb_pal_register(struct uwb_pal *pal)
{
+ struct uwb_rc *rc = pal->rc;
int ret;
if (pal->device) {
@@ -54,9 +55,11 @@
}
}
- spin_lock(&rc->pal_lock);
+ pal->debugfs_dir = uwb_dbg_create_pal_dir(pal);
+
+ mutex_lock(&rc->uwb_dev.mutex);
list_add(&pal->node, &rc->pals);
- spin_unlock(&rc->pal_lock);
+ mutex_unlock(&rc->uwb_dev.mutex);
return 0;
}
@@ -64,14 +67,19 @@
/**
* uwb_pal_register - unregister a UWB PAL
- * @rc: the radio controller the PAL was using
* @pal: the PAL
*/
-void uwb_pal_unregister(struct uwb_rc *rc, struct uwb_pal *pal)
+void uwb_pal_unregister(struct uwb_pal *pal)
{
- spin_lock(&rc->pal_lock);
+ struct uwb_rc *rc = pal->rc;
+
+ uwb_radio_stop(pal);
+
+ mutex_lock(&rc->uwb_dev.mutex);
list_del(&pal->node);
- spin_unlock(&rc->pal_lock);
+ mutex_unlock(&rc->uwb_dev.mutex);
+
+ debugfs_remove(pal->debugfs_dir);
if (pal->device) {
sysfs_remove_link(&rc->uwb_dev.dev.kobj, pal->name);
@@ -86,6 +94,5 @@
*/
void uwb_rc_pal_init(struct uwb_rc *rc)
{
- spin_lock_init(&rc->pal_lock);
INIT_LIST_HEAD(&rc->pals);
}
diff --git a/drivers/uwb/radio.c b/drivers/uwb/radio.c
new file mode 100644
index 0000000..f0d5549
--- /dev/null
+++ b/drivers/uwb/radio.c
@@ -0,0 +1,202 @@
+/*
+ * UWB radio (channel) management.
+ *
+ * Copyright (C) 2008 Cambridge Silicon Radio Ltd.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <linux/kernel.h>
+#include <linux/uwb.h>
+
+#include "uwb-internal.h"
+
+
+static int uwb_radio_select_channel(struct uwb_rc *rc)
+{
+ /*
+ * Default to channel 9 (BG1, TFC1) unless the user has
+ * selected a specific channel or there are no active PALs.
+ */
+ if (rc->active_pals == 0)
+ return -1;
+ if (rc->beaconing_forced)
+ return rc->beaconing_forced;
+ return 9;
+}
+
+
+/*
+ * Notify all active PALs that the channel has changed.
+ */
+static void uwb_radio_channel_changed(struct uwb_rc *rc, int channel)
+{
+ struct uwb_pal *pal;
+
+ list_for_each_entry(pal, &rc->pals, node) {
+ if (pal->channel && channel != pal->channel) {
+ pal->channel = channel;
+ if (pal->channel_changed)
+ pal->channel_changed(pal, pal->channel);
+ }
+ }
+}
+
+/*
+ * Change to a new channel and notify any active PALs of the new
+ * channel.
+ *
+ * When stopping the radio, PALs need to be notified first so they can
+ * terminate any active reservations.
+ */
+static int uwb_radio_change_channel(struct uwb_rc *rc, int channel)
+{
+ int ret = 0;
+
+ if (channel == -1)
+ uwb_radio_channel_changed(rc, channel);
+
+ if (channel != rc->beaconing) {
+ if (rc->beaconing != -1 && channel != -1) {
+ /*
+ * FIXME: should signal the channel change
+ * with a Channel Change IE.
+ */
+ ret = uwb_radio_change_channel(rc, -1);
+ if (ret < 0)
+ return ret;
+ }
+ ret = uwb_rc_beacon(rc, channel, 0);
+ }
+
+ if (channel != -1)
+ uwb_radio_channel_changed(rc, rc->beaconing);
+
+ return ret;
+}
+
+/**
+ * uwb_radio_start - request that the radio be started
+ * @pal: the PAL making the request.
+ *
+ * If the radio is not already active, aa suitable channel is selected
+ * and beacons are started.
+ */
+int uwb_radio_start(struct uwb_pal *pal)
+{
+ struct uwb_rc *rc = pal->rc;
+ int ret = 0;
+
+ mutex_lock(&rc->uwb_dev.mutex);
+
+ if (!pal->channel) {
+ pal->channel = -1;
+ rc->active_pals++;
+ ret = uwb_radio_change_channel(rc, uwb_radio_select_channel(rc));
+ }
+
+ mutex_unlock(&rc->uwb_dev.mutex);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(uwb_radio_start);
+
+/**
+ * uwb_radio_stop - request tha the radio be stopped.
+ * @pal: the PAL making the request.
+ *
+ * Stops the radio if no other PAL is making use of it.
+ */
+void uwb_radio_stop(struct uwb_pal *pal)
+{
+ struct uwb_rc *rc = pal->rc;
+
+ mutex_lock(&rc->uwb_dev.mutex);
+
+ if (pal->channel) {
+ rc->active_pals--;
+ uwb_radio_change_channel(rc, uwb_radio_select_channel(rc));
+ pal->channel = 0;
+ }
+
+ mutex_unlock(&rc->uwb_dev.mutex);
+}
+EXPORT_SYMBOL_GPL(uwb_radio_stop);
+
+/*
+ * uwb_radio_force_channel - force a specific channel to be used
+ * @rc: the radio controller.
+ * @channel: the channel to use; -1 to force the radio to stop; 0 to
+ * use the default channel selection algorithm.
+ */
+int uwb_radio_force_channel(struct uwb_rc *rc, int channel)
+{
+ int ret = 0;
+
+ mutex_lock(&rc->uwb_dev.mutex);
+
+ rc->beaconing_forced = channel;
+ ret = uwb_radio_change_channel(rc, uwb_radio_select_channel(rc));
+
+ mutex_unlock(&rc->uwb_dev.mutex);
+ return ret;
+}
+
+/*
+ * uwb_radio_setup - setup the radio manager
+ * @rc: the radio controller.
+ *
+ * The radio controller is reset to ensure it's in a known state
+ * before it's used.
+ */
+int uwb_radio_setup(struct uwb_rc *rc)
+{
+ return uwb_rc_reset(rc);
+}
+
+/*
+ * uwb_radio_reset_state - reset any radio manager state
+ * @rc: the radio controller.
+ *
+ * All internal radio manager state is reset to values corresponding
+ * to a reset radio controller.
+ */
+void uwb_radio_reset_state(struct uwb_rc *rc)
+{
+ struct uwb_pal *pal;
+
+ mutex_lock(&rc->uwb_dev.mutex);
+
+ list_for_each_entry(pal, &rc->pals, node) {
+ if (pal->channel) {
+ pal->channel = -1;
+ if (pal->channel_changed)
+ pal->channel_changed(pal, -1);
+ }
+ }
+
+ rc->beaconing = -1;
+ rc->scanning = -1;
+
+ mutex_unlock(&rc->uwb_dev.mutex);
+}
+
+/*
+ * uwb_radio_shutdown - shutdown the radio manager
+ * @rc: the radio controller.
+ *
+ * The radio controller is reset.
+ */
+void uwb_radio_shutdown(struct uwb_rc *rc)
+{
+ uwb_radio_reset_state(rc);
+ uwb_rc_reset(rc);
+}
diff --git a/drivers/uwb/reset.c b/drivers/uwb/reset.c
index 8de856f..70f8050 100644
--- a/drivers/uwb/reset.c
+++ b/drivers/uwb/reset.c
@@ -32,8 +32,6 @@
#include <linux/err.h>
#include "uwb-internal.h"
-#define D_LOCAL 0
-#include <linux/uwb/debug.h>
/**
* Command result codes (WUSB1.0[T8-69])
@@ -323,17 +321,16 @@
struct uwb_rc *rc = evt->rc;
int ret;
- /* Need to prevent the RC hardware module going away while in
- the rc->reset() call. */
- if (!try_module_get(rc->owner))
- return 0;
-
dev_info(&rc->uwb_dev.dev, "resetting radio controller\n");
ret = rc->reset(rc);
- if (ret)
+ if (ret) {
dev_err(&rc->uwb_dev.dev, "failed to reset hardware: %d\n", ret);
-
- module_put(rc->owner);
+ goto error;
+ }
+ return 0;
+error:
+ /* Nothing can be done except try the reset again. */
+ uwb_rc_reset_all(rc);
return ret;
}
@@ -360,3 +357,33 @@
uwbd_event_queue(evt);
}
EXPORT_SYMBOL_GPL(uwb_rc_reset_all);
+
+void uwb_rc_pre_reset(struct uwb_rc *rc)
+{
+ rc->stop(rc);
+ uwbd_flush(rc);
+
+ uwb_radio_reset_state(rc);
+ uwb_rsv_remove_all(rc);
+}
+EXPORT_SYMBOL_GPL(uwb_rc_pre_reset);
+
+void uwb_rc_post_reset(struct uwb_rc *rc)
+{
+ int ret;
+
+ ret = rc->start(rc);
+ if (ret)
+ goto error;
+ ret = uwb_rc_mac_addr_set(rc, &rc->uwb_dev.mac_addr);
+ if (ret)
+ goto error;
+ ret = uwb_rc_dev_addr_set(rc, &rc->uwb_dev.dev_addr);
+ if (ret)
+ goto error;
+ return;
+error:
+ /* Nothing can be done except try the reset again. */
+ uwb_rc_reset_all(rc);
+}
+EXPORT_SYMBOL_GPL(uwb_rc_post_reset);
diff --git a/drivers/uwb/rsv.c b/drivers/uwb/rsv.c
index bae16204..ec6eecb 100644
--- a/drivers/uwb/rsv.c
+++ b/drivers/uwb/rsv.c
@@ -15,23 +15,33 @@
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
-#include <linux/version.h>
#include <linux/kernel.h>
#include <linux/uwb.h>
+#include <linux/random.h>
#include "uwb-internal.h"
static void uwb_rsv_timer(unsigned long arg);
static const char *rsv_states[] = {
- [UWB_RSV_STATE_NONE] = "none",
- [UWB_RSV_STATE_O_INITIATED] = "initiated",
- [UWB_RSV_STATE_O_PENDING] = "pending",
- [UWB_RSV_STATE_O_MODIFIED] = "modified",
- [UWB_RSV_STATE_O_ESTABLISHED] = "established",
- [UWB_RSV_STATE_T_ACCEPTED] = "accepted",
- [UWB_RSV_STATE_T_DENIED] = "denied",
- [UWB_RSV_STATE_T_PENDING] = "pending",
+ [UWB_RSV_STATE_NONE] = "none ",
+ [UWB_RSV_STATE_O_INITIATED] = "o initiated ",
+ [UWB_RSV_STATE_O_PENDING] = "o pending ",
+ [UWB_RSV_STATE_O_MODIFIED] = "o modified ",
+ [UWB_RSV_STATE_O_ESTABLISHED] = "o established ",
+ [UWB_RSV_STATE_O_TO_BE_MOVED] = "o to be moved ",
+ [UWB_RSV_STATE_O_MOVE_EXPANDING] = "o move expanding",
+ [UWB_RSV_STATE_O_MOVE_COMBINING] = "o move combining",
+ [UWB_RSV_STATE_O_MOVE_REDUCING] = "o move reducing ",
+ [UWB_RSV_STATE_T_ACCEPTED] = "t accepted ",
+ [UWB_RSV_STATE_T_CONFLICT] = "t conflict ",
+ [UWB_RSV_STATE_T_PENDING] = "t pending ",
+ [UWB_RSV_STATE_T_DENIED] = "t denied ",
+ [UWB_RSV_STATE_T_RESIZED] = "t resized ",
+ [UWB_RSV_STATE_T_EXPANDING_ACCEPTED] = "t expanding acc ",
+ [UWB_RSV_STATE_T_EXPANDING_CONFLICT] = "t expanding conf",
+ [UWB_RSV_STATE_T_EXPANDING_PENDING] = "t expanding pend",
+ [UWB_RSV_STATE_T_EXPANDING_DENIED] = "t expanding den ",
};
static const char *rsv_types[] = {
@@ -42,6 +52,31 @@
[UWB_DRP_TYPE_PCA] = "pca",
};
+bool uwb_rsv_has_two_drp_ies(struct uwb_rsv *rsv)
+{
+ static const bool has_two_drp_ies[] = {
+ [UWB_RSV_STATE_O_INITIATED] = false,
+ [UWB_RSV_STATE_O_PENDING] = false,
+ [UWB_RSV_STATE_O_MODIFIED] = false,
+ [UWB_RSV_STATE_O_ESTABLISHED] = false,
+ [UWB_RSV_STATE_O_TO_BE_MOVED] = false,
+ [UWB_RSV_STATE_O_MOVE_COMBINING] = false,
+ [UWB_RSV_STATE_O_MOVE_REDUCING] = false,
+ [UWB_RSV_STATE_O_MOVE_EXPANDING] = true,
+ [UWB_RSV_STATE_T_ACCEPTED] = false,
+ [UWB_RSV_STATE_T_CONFLICT] = false,
+ [UWB_RSV_STATE_T_PENDING] = false,
+ [UWB_RSV_STATE_T_DENIED] = false,
+ [UWB_RSV_STATE_T_RESIZED] = false,
+ [UWB_RSV_STATE_T_EXPANDING_ACCEPTED] = true,
+ [UWB_RSV_STATE_T_EXPANDING_CONFLICT] = true,
+ [UWB_RSV_STATE_T_EXPANDING_PENDING] = true,
+ [UWB_RSV_STATE_T_EXPANDING_DENIED] = true,
+ };
+
+ return has_two_drp_ies[rsv->state];
+}
+
/**
* uwb_rsv_state_str - return a string for a reservation state
* @state: the reservation state.
@@ -66,7 +101,7 @@
}
EXPORT_SYMBOL_GPL(uwb_rsv_type_str);
-static void uwb_rsv_dump(struct uwb_rsv *rsv)
+void uwb_rsv_dump(char *text, struct uwb_rsv *rsv)
{
struct device *dev = &rsv->rc->uwb_dev.dev;
struct uwb_dev_addr devaddr;
@@ -82,6 +117,23 @@
dev_dbg(dev, "rsv %s -> %s: %s\n", owner, target, uwb_rsv_state_str(rsv->state));
}
+static void uwb_rsv_release(struct kref *kref)
+{
+ struct uwb_rsv *rsv = container_of(kref, struct uwb_rsv, kref);
+
+ kfree(rsv);
+}
+
+void uwb_rsv_get(struct uwb_rsv *rsv)
+{
+ kref_get(&rsv->kref);
+}
+
+void uwb_rsv_put(struct uwb_rsv *rsv)
+{
+ kref_put(&rsv->kref, uwb_rsv_release);
+}
+
/*
* Get a free stream index for a reservation.
*
@@ -92,6 +144,7 @@
static int uwb_rsv_get_stream(struct uwb_rsv *rsv)
{
struct uwb_rc *rc = rsv->rc;
+ struct device *dev = &rc->uwb_dev.dev;
unsigned long *streams_bm;
int stream;
@@ -113,12 +166,15 @@
rsv->stream = stream;
set_bit(stream, streams_bm);
+ dev_dbg(dev, "get stream %d\n", rsv->stream);
+
return 0;
}
static void uwb_rsv_put_stream(struct uwb_rsv *rsv)
{
struct uwb_rc *rc = rsv->rc;
+ struct device *dev = &rc->uwb_dev.dev;
unsigned long *streams_bm;
switch (rsv->target.type) {
@@ -133,86 +189,52 @@
}
clear_bit(rsv->stream, streams_bm);
+
+ dev_dbg(dev, "put stream %d\n", rsv->stream);
}
-/*
- * Generate a MAS allocation with a single row component.
- */
-static void uwb_rsv_gen_alloc_row(struct uwb_mas_bm *mas,
- int first_mas, int mas_per_zone,
- int zs, int ze)
+void uwb_rsv_backoff_win_timer(unsigned long arg)
{
- struct uwb_mas_bm col;
- int z;
+ struct uwb_drp_backoff_win *bow = (struct uwb_drp_backoff_win *)arg;
+ struct uwb_rc *rc = container_of(bow, struct uwb_rc, bow);
+ struct device *dev = &rc->uwb_dev.dev;
- bitmap_zero(mas->bm, UWB_NUM_MAS);
- bitmap_zero(col.bm, UWB_NUM_MAS);
- bitmap_fill(col.bm, mas_per_zone);
- bitmap_shift_left(col.bm, col.bm, first_mas + zs * UWB_MAS_PER_ZONE, UWB_NUM_MAS);
-
- for (z = zs; z <= ze; z++) {
- bitmap_or(mas->bm, mas->bm, col.bm, UWB_NUM_MAS);
- bitmap_shift_left(col.bm, col.bm, UWB_MAS_PER_ZONE, UWB_NUM_MAS);
+ bow->can_reserve_extra_mases = true;
+ if (bow->total_expired <= 4) {
+ bow->total_expired++;
+ } else {
+ /* after 4 backoff window has expired we can exit from
+ * the backoff procedure */
+ bow->total_expired = 0;
+ bow->window = UWB_DRP_BACKOFF_WIN_MIN >> 1;
}
+ dev_dbg(dev, "backoff_win_timer total_expired=%d, n=%d\n: ", bow->total_expired, bow->n);
+
+ /* try to relocate all the "to be moved" relocations */
+ uwb_rsv_handle_drp_avail_change(rc);
}
-/*
- * Allocate some MAS for this reservation based on current local
- * availability, the reservation parameters (max_mas, min_mas,
- * sparsity), and the WiMedia rules for MAS allocations.
- *
- * Returns -EBUSY is insufficient free MAS are available.
- *
- * FIXME: to simplify this, only safe reservations with a single row
- * component in zones 1 to 15 are tried (zone 0 is skipped to avoid
- * problems with the MAS reserved for the BP).
- *
- * [ECMA-368] section B.2.
- */
-static int uwb_rsv_alloc_mas(struct uwb_rsv *rsv)
+void uwb_rsv_backoff_win_increment(struct uwb_rc *rc)
{
- static const int safe_mas_in_row[UWB_NUM_ZONES] = {
- 8, 7, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1,
- };
- int n, r;
- struct uwb_mas_bm mas;
- bool found = false;
+ struct uwb_drp_backoff_win *bow = &rc->bow;
+ struct device *dev = &rc->uwb_dev.dev;
+ unsigned timeout_us;
- /*
- * Search all valid safe allocations until either: too few MAS
- * are available; or the smallest allocation with sufficient
- * MAS is found.
- *
- * The top of the zones are preferred, so space for larger
- * allocations is available in the bottom of the zone (e.g., a
- * 15 MAS allocation should start in row 14 leaving space for
- * a 120 MAS allocation at row 0).
- */
- for (n = safe_mas_in_row[0]; n >= 1; n--) {
- int num_mas;
+ dev_dbg(dev, "backoff_win_increment: window=%d\n", bow->window);
- num_mas = n * (UWB_NUM_ZONES - 1);
- if (num_mas < rsv->min_mas)
- break;
- if (found && num_mas < rsv->max_mas)
- break;
+ bow->can_reserve_extra_mases = false;
- for (r = UWB_MAS_PER_ZONE-1; r >= 0; r--) {
- if (safe_mas_in_row[r] < n)
- continue;
- uwb_rsv_gen_alloc_row(&mas, r, n, 1, UWB_NUM_ZONES);
- if (uwb_drp_avail_reserve_pending(rsv->rc, &mas) == 0) {
- found = true;
- break;
- }
- }
- }
+ if((bow->window << 1) == UWB_DRP_BACKOFF_WIN_MAX)
+ return;
- if (!found)
- return -EBUSY;
+ bow->window <<= 1;
+ bow->n = random32() & (bow->window - 1);
+ dev_dbg(dev, "new_window=%d, n=%d\n: ", bow->window, bow->n);
- bitmap_copy(rsv->mas.bm, mas.bm, UWB_NUM_MAS);
- return 0;
+ /* reset the timer associated variables */
+ timeout_us = bow->n * UWB_SUPERFRAME_LENGTH_US;
+ bow->total_expired = 0;
+ mod_timer(&bow->timer, jiffies + usecs_to_jiffies(timeout_us));
}
static void uwb_rsv_stroke_timer(struct uwb_rsv *rsv)
@@ -225,13 +247,16 @@
* received.
*/
if (rsv->is_multicast) {
- if (rsv->state == UWB_RSV_STATE_O_INITIATED)
+ if (rsv->state == UWB_RSV_STATE_O_INITIATED
+ || rsv->state == UWB_RSV_STATE_O_MOVE_EXPANDING
+ || rsv->state == UWB_RSV_STATE_O_MOVE_COMBINING
+ || rsv->state == UWB_RSV_STATE_O_MOVE_REDUCING)
sframes = 1;
if (rsv->state == UWB_RSV_STATE_O_ESTABLISHED)
sframes = 0;
+
}
- rsv->expired = false;
if (sframes > 0) {
/*
* Add an additional 2 superframes to account for the
@@ -253,7 +278,7 @@
rsv->state = new_state;
rsv->ie_valid = false;
- uwb_rsv_dump(rsv);
+ uwb_rsv_dump("SU", rsv);
uwb_rsv_stroke_timer(rsv);
uwb_rsv_sched_update(rsv->rc);
@@ -267,10 +292,17 @@
void uwb_rsv_set_state(struct uwb_rsv *rsv, enum uwb_rsv_state new_state)
{
+ struct uwb_rsv_move *mv = &rsv->mv;
+
if (rsv->state == new_state) {
switch (rsv->state) {
case UWB_RSV_STATE_O_ESTABLISHED:
+ case UWB_RSV_STATE_O_MOVE_EXPANDING:
+ case UWB_RSV_STATE_O_MOVE_COMBINING:
+ case UWB_RSV_STATE_O_MOVE_REDUCING:
case UWB_RSV_STATE_T_ACCEPTED:
+ case UWB_RSV_STATE_T_EXPANDING_ACCEPTED:
+ case UWB_RSV_STATE_T_RESIZED:
case UWB_RSV_STATE_NONE:
uwb_rsv_stroke_timer(rsv);
break;
@@ -282,10 +314,10 @@
return;
}
+ uwb_rsv_dump("SC", rsv);
+
switch (new_state) {
case UWB_RSV_STATE_NONE:
- uwb_drp_avail_release(rsv->rc, &rsv->mas);
- uwb_rsv_put_stream(rsv);
uwb_rsv_state_update(rsv, UWB_RSV_STATE_NONE);
uwb_rsv_callback(rsv);
break;
@@ -295,12 +327,45 @@
case UWB_RSV_STATE_O_PENDING:
uwb_rsv_state_update(rsv, UWB_RSV_STATE_O_PENDING);
break;
+ case UWB_RSV_STATE_O_MODIFIED:
+ /* in the companion there are the MASes to drop */
+ bitmap_andnot(rsv->mas.bm, rsv->mas.bm, mv->companion_mas.bm, UWB_NUM_MAS);
+ uwb_rsv_state_update(rsv, UWB_RSV_STATE_O_MODIFIED);
+ break;
case UWB_RSV_STATE_O_ESTABLISHED:
+ if (rsv->state == UWB_RSV_STATE_O_MODIFIED
+ || rsv->state == UWB_RSV_STATE_O_MOVE_REDUCING) {
+ uwb_drp_avail_release(rsv->rc, &mv->companion_mas);
+ rsv->needs_release_companion_mas = false;
+ }
uwb_drp_avail_reserve(rsv->rc, &rsv->mas);
uwb_rsv_state_update(rsv, UWB_RSV_STATE_O_ESTABLISHED);
uwb_rsv_callback(rsv);
break;
+ case UWB_RSV_STATE_O_MOVE_EXPANDING:
+ rsv->needs_release_companion_mas = true;
+ uwb_rsv_state_update(rsv, UWB_RSV_STATE_O_MOVE_EXPANDING);
+ break;
+ case UWB_RSV_STATE_O_MOVE_COMBINING:
+ rsv->needs_release_companion_mas = false;
+ uwb_drp_avail_reserve(rsv->rc, &mv->companion_mas);
+ bitmap_or(rsv->mas.bm, rsv->mas.bm, mv->companion_mas.bm, UWB_NUM_MAS);
+ rsv->mas.safe += mv->companion_mas.safe;
+ rsv->mas.unsafe += mv->companion_mas.unsafe;
+ uwb_rsv_state_update(rsv, UWB_RSV_STATE_O_MOVE_COMBINING);
+ break;
+ case UWB_RSV_STATE_O_MOVE_REDUCING:
+ bitmap_andnot(mv->companion_mas.bm, rsv->mas.bm, mv->final_mas.bm, UWB_NUM_MAS);
+ rsv->needs_release_companion_mas = true;
+ rsv->mas.safe = mv->final_mas.safe;
+ rsv->mas.unsafe = mv->final_mas.unsafe;
+ bitmap_copy(rsv->mas.bm, mv->final_mas.bm, UWB_NUM_MAS);
+ bitmap_copy(rsv->mas.unsafe_bm, mv->final_mas.unsafe_bm, UWB_NUM_MAS);
+ uwb_rsv_state_update(rsv, UWB_RSV_STATE_O_MOVE_REDUCING);
+ break;
case UWB_RSV_STATE_T_ACCEPTED:
+ case UWB_RSV_STATE_T_RESIZED:
+ rsv->needs_release_companion_mas = false;
uwb_drp_avail_reserve(rsv->rc, &rsv->mas);
uwb_rsv_state_update(rsv, UWB_RSV_STATE_T_ACCEPTED);
uwb_rsv_callback(rsv);
@@ -308,12 +373,82 @@
case UWB_RSV_STATE_T_DENIED:
uwb_rsv_state_update(rsv, UWB_RSV_STATE_T_DENIED);
break;
+ case UWB_RSV_STATE_T_CONFLICT:
+ uwb_rsv_state_update(rsv, UWB_RSV_STATE_T_CONFLICT);
+ break;
+ case UWB_RSV_STATE_T_PENDING:
+ uwb_rsv_state_update(rsv, UWB_RSV_STATE_T_PENDING);
+ break;
+ case UWB_RSV_STATE_T_EXPANDING_ACCEPTED:
+ rsv->needs_release_companion_mas = true;
+ uwb_drp_avail_reserve(rsv->rc, &mv->companion_mas);
+ uwb_rsv_state_update(rsv, UWB_RSV_STATE_T_EXPANDING_ACCEPTED);
+ break;
default:
dev_err(&rsv->rc->uwb_dev.dev, "unhandled state: %s (%d)\n",
uwb_rsv_state_str(new_state), new_state);
}
}
+static void uwb_rsv_handle_timeout_work(struct work_struct *work)
+{
+ struct uwb_rsv *rsv = container_of(work, struct uwb_rsv,
+ handle_timeout_work);
+ struct uwb_rc *rc = rsv->rc;
+
+ mutex_lock(&rc->rsvs_mutex);
+
+ uwb_rsv_dump("TO", rsv);
+
+ switch (rsv->state) {
+ case UWB_RSV_STATE_O_INITIATED:
+ if (rsv->is_multicast) {
+ uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_ESTABLISHED);
+ goto unlock;
+ }
+ break;
+ case UWB_RSV_STATE_O_MOVE_EXPANDING:
+ if (rsv->is_multicast) {
+ uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_MOVE_COMBINING);
+ goto unlock;
+ }
+ break;
+ case UWB_RSV_STATE_O_MOVE_COMBINING:
+ if (rsv->is_multicast) {
+ uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_MOVE_REDUCING);
+ goto unlock;
+ }
+ break;
+ case UWB_RSV_STATE_O_MOVE_REDUCING:
+ if (rsv->is_multicast) {
+ uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_ESTABLISHED);
+ goto unlock;
+ }
+ break;
+ case UWB_RSV_STATE_O_ESTABLISHED:
+ if (rsv->is_multicast)
+ goto unlock;
+ break;
+ case UWB_RSV_STATE_T_EXPANDING_ACCEPTED:
+ /*
+ * The time out could be for the main or of the
+ * companion DRP, assume it's for the companion and
+ * drop that first. A further time out is required to
+ * drop the main.
+ */
+ uwb_rsv_set_state(rsv, UWB_RSV_STATE_T_ACCEPTED);
+ uwb_drp_avail_release(rsv->rc, &rsv->mv.companion_mas);
+ goto unlock;
+ default:
+ break;
+ }
+
+ uwb_rsv_remove(rsv);
+
+unlock:
+ mutex_unlock(&rc->rsvs_mutex);
+}
+
static struct uwb_rsv *uwb_rsv_alloc(struct uwb_rc *rc)
{
struct uwb_rsv *rsv;
@@ -324,23 +459,17 @@
INIT_LIST_HEAD(&rsv->rc_node);
INIT_LIST_HEAD(&rsv->pal_node);
+ kref_init(&rsv->kref);
init_timer(&rsv->timer);
rsv->timer.function = uwb_rsv_timer;
rsv->timer.data = (unsigned long)rsv;
rsv->rc = rc;
+ INIT_WORK(&rsv->handle_timeout_work, uwb_rsv_handle_timeout_work);
return rsv;
}
-static void uwb_rsv_free(struct uwb_rsv *rsv)
-{
- uwb_dev_put(rsv->owner);
- if (rsv->target.type == UWB_RSV_TARGET_DEV)
- uwb_dev_put(rsv->target.dev);
- kfree(rsv);
-}
-
/**
* uwb_rsv_create - allocate and initialize a UWB reservation structure
* @rc: the radio controller
@@ -371,26 +500,36 @@
void uwb_rsv_remove(struct uwb_rsv *rsv)
{
+ uwb_rsv_dump("RM", rsv);
+
if (rsv->state != UWB_RSV_STATE_NONE)
uwb_rsv_set_state(rsv, UWB_RSV_STATE_NONE);
+
+ if (rsv->needs_release_companion_mas)
+ uwb_drp_avail_release(rsv->rc, &rsv->mv.companion_mas);
+ uwb_drp_avail_release(rsv->rc, &rsv->mas);
+
+ if (uwb_rsv_is_owner(rsv))
+ uwb_rsv_put_stream(rsv);
+
del_timer_sync(&rsv->timer);
- list_del(&rsv->rc_node);
- uwb_rsv_free(rsv);
+ uwb_dev_put(rsv->owner);
+ if (rsv->target.type == UWB_RSV_TARGET_DEV)
+ uwb_dev_put(rsv->target.dev);
+
+ list_del_init(&rsv->rc_node);
+ uwb_rsv_put(rsv);
}
/**
* uwb_rsv_destroy - free a UWB reservation structure
* @rsv: the reservation to free
*
- * The reservation will be terminated if it is pending or established.
+ * The reservation must already be terminated.
*/
void uwb_rsv_destroy(struct uwb_rsv *rsv)
{
- struct uwb_rc *rc = rsv->rc;
-
- mutex_lock(&rc->rsvs_mutex);
- uwb_rsv_remove(rsv);
- mutex_unlock(&rc->rsvs_mutex);
+ uwb_rsv_put(rsv);
}
EXPORT_SYMBOL_GPL(uwb_rsv_destroy);
@@ -399,7 +538,7 @@
* @rsv: the reservation
*
* The PAL should fill in @rsv's owner, target, type, max_mas,
- * min_mas, sparsity and is_multicast fields. If the target is a
+ * min_mas, max_interval and is_multicast fields. If the target is a
* uwb_dev it must be referenced.
*
* The reservation's callback will be called when the reservation is
@@ -408,20 +547,32 @@
int uwb_rsv_establish(struct uwb_rsv *rsv)
{
struct uwb_rc *rc = rsv->rc;
+ struct uwb_mas_bm available;
int ret;
mutex_lock(&rc->rsvs_mutex);
-
ret = uwb_rsv_get_stream(rsv);
if (ret)
goto out;
- ret = uwb_rsv_alloc_mas(rsv);
- if (ret) {
+ rsv->tiebreaker = random32() & 1;
+ /* get available mas bitmap */
+ uwb_drp_available(rc, &available);
+
+ ret = uwb_rsv_find_best_allocation(rsv, &available, &rsv->mas);
+ if (ret == UWB_RSV_ALLOC_NOT_FOUND) {
+ ret = -EBUSY;
uwb_rsv_put_stream(rsv);
goto out;
}
+ ret = uwb_drp_avail_reserve_pending(rc, &rsv->mas);
+ if (ret != 0) {
+ uwb_rsv_put_stream(rsv);
+ goto out;
+ }
+
+ uwb_rsv_get(rsv);
list_add_tail(&rsv->rc_node, &rc->reservations);
rsv->owner = &rc->uwb_dev;
uwb_dev_get(rsv->owner);
@@ -437,16 +588,71 @@
* @rsv: the reservation to modify
* @max_mas: new maximum MAS to reserve
* @min_mas: new minimum MAS to reserve
- * @sparsity: new sparsity to use
+ * @max_interval: new max_interval to use
*
* FIXME: implement this once there are PALs that use it.
*/
-int uwb_rsv_modify(struct uwb_rsv *rsv, int max_mas, int min_mas, int sparsity)
+int uwb_rsv_modify(struct uwb_rsv *rsv, int max_mas, int min_mas, int max_interval)
{
return -ENOSYS;
}
EXPORT_SYMBOL_GPL(uwb_rsv_modify);
+/*
+ * move an already established reservation (rc->rsvs_mutex must to be
+ * taken when tis function is called)
+ */
+int uwb_rsv_try_move(struct uwb_rsv *rsv, struct uwb_mas_bm *available)
+{
+ struct uwb_rc *rc = rsv->rc;
+ struct uwb_drp_backoff_win *bow = &rc->bow;
+ struct device *dev = &rc->uwb_dev.dev;
+ struct uwb_rsv_move *mv;
+ int ret = 0;
+
+ if (bow->can_reserve_extra_mases == false)
+ return -EBUSY;
+
+ mv = &rsv->mv;
+
+ if (uwb_rsv_find_best_allocation(rsv, available, &mv->final_mas) == UWB_RSV_ALLOC_FOUND) {
+
+ if (!bitmap_equal(rsv->mas.bm, mv->final_mas.bm, UWB_NUM_MAS)) {
+ /* We want to move the reservation */
+ bitmap_andnot(mv->companion_mas.bm, mv->final_mas.bm, rsv->mas.bm, UWB_NUM_MAS);
+ uwb_drp_avail_reserve_pending(rc, &mv->companion_mas);
+ uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_MOVE_EXPANDING);
+ }
+ } else {
+ dev_dbg(dev, "new allocation not found\n");
+ }
+
+ return ret;
+}
+
+/* It will try to move every reservation in state O_ESTABLISHED giving
+ * to the MAS allocator algorithm an availability that is the real one
+ * plus the allocation already established from the reservation. */
+void uwb_rsv_handle_drp_avail_change(struct uwb_rc *rc)
+{
+ struct uwb_drp_backoff_win *bow = &rc->bow;
+ struct uwb_rsv *rsv;
+ struct uwb_mas_bm mas;
+
+ if (bow->can_reserve_extra_mases == false)
+ return;
+
+ list_for_each_entry(rsv, &rc->reservations, rc_node) {
+ if (rsv->state == UWB_RSV_STATE_O_ESTABLISHED ||
+ rsv->state == UWB_RSV_STATE_O_TO_BE_MOVED) {
+ uwb_drp_available(rc, &mas);
+ bitmap_or(mas.bm, mas.bm, rsv->mas.bm, UWB_NUM_MAS);
+ uwb_rsv_try_move(rsv, &mas);
+ }
+ }
+
+}
+
/**
* uwb_rsv_terminate - terminate an established reservation
* @rsv: the reservation to terminate
@@ -463,7 +669,8 @@
mutex_lock(&rc->rsvs_mutex);
- uwb_rsv_set_state(rsv, UWB_RSV_STATE_NONE);
+ if (rsv->state != UWB_RSV_STATE_NONE)
+ uwb_rsv_set_state(rsv, UWB_RSV_STATE_NONE);
mutex_unlock(&rc->rsvs_mutex);
}
@@ -477,9 +684,14 @@
*
* Reservation requests from peers are denied unless a PAL accepts it
* by calling this function.
+ *
+ * The PAL call uwb_rsv_destroy() for all accepted reservations before
+ * calling uwb_pal_unregister().
*/
void uwb_rsv_accept(struct uwb_rsv *rsv, uwb_rsv_cb_f cb, void *pal_priv)
{
+ uwb_rsv_get(rsv);
+
rsv->callback = cb;
rsv->pal_priv = pal_priv;
rsv->state = UWB_RSV_STATE_T_ACCEPTED;
@@ -530,9 +742,9 @@
uwb_dev_get(rsv->owner);
rsv->target.type = UWB_RSV_TARGET_DEV;
rsv->target.dev = &rc->uwb_dev;
+ uwb_dev_get(&rc->uwb_dev);
rsv->type = uwb_ie_drp_type(drp_ie);
rsv->stream = uwb_ie_drp_stream_index(drp_ie);
- set_bit(rsv->stream, rsv->owner->streams);
uwb_drp_ie_to_bm(&rsv->mas, drp_ie);
/*
@@ -540,24 +752,46 @@
* deny the request.
*/
rsv->state = UWB_RSV_STATE_T_DENIED;
- spin_lock(&rc->pal_lock);
+ mutex_lock(&rc->uwb_dev.mutex);
list_for_each_entry(pal, &rc->pals, node) {
if (pal->new_rsv)
- pal->new_rsv(rsv);
+ pal->new_rsv(pal, rsv);
if (rsv->state == UWB_RSV_STATE_T_ACCEPTED)
break;
}
- spin_unlock(&rc->pal_lock);
+ mutex_unlock(&rc->uwb_dev.mutex);
list_add_tail(&rsv->rc_node, &rc->reservations);
state = rsv->state;
rsv->state = UWB_RSV_STATE_NONE;
- uwb_rsv_set_state(rsv, state);
+
+ /* FIXME: do something sensible here */
+ if (state == UWB_RSV_STATE_T_ACCEPTED
+ && uwb_drp_avail_reserve_pending(rc, &rsv->mas) == -EBUSY) {
+ /* FIXME: do something sensible here */
+ } else {
+ uwb_rsv_set_state(rsv, state);
+ }
return rsv;
}
/**
+ * uwb_rsv_get_usable_mas - get the bitmap of the usable MAS of a reservations
+ * @rsv: the reservation.
+ * @mas: returns the available MAS.
+ *
+ * The usable MAS of a reservation may be less than the negotiated MAS
+ * if alien BPs are present.
+ */
+void uwb_rsv_get_usable_mas(struct uwb_rsv *rsv, struct uwb_mas_bm *mas)
+{
+ bitmap_zero(mas->bm, UWB_NUM_MAS);
+ bitmap_andnot(mas->bm, rsv->mas.bm, rsv->rc->cnflt_alien_bitmap.bm, UWB_NUM_MAS);
+}
+EXPORT_SYMBOL_GPL(uwb_rsv_get_usable_mas);
+
+/**
* uwb_rsv_find - find a reservation for a received DRP IE.
* @rc: the radio controller
* @src: source of the DRP IE
@@ -596,8 +830,6 @@
bool ie_updated = false;
list_for_each_entry_safe(rsv, t, &rc->reservations, rc_node) {
- if (rsv->expired)
- uwb_drp_handle_timeout(rsv);
if (!rsv->ie_valid) {
uwb_drp_ie_update(rsv);
ie_updated = true;
@@ -607,9 +839,47 @@
return ie_updated;
}
+void uwb_rsv_queue_update(struct uwb_rc *rc)
+{
+ unsigned long delay_us = UWB_MAS_LENGTH_US * UWB_MAS_PER_ZONE;
+
+ queue_delayed_work(rc->rsv_workq, &rc->rsv_update_work, usecs_to_jiffies(delay_us));
+}
+
+/**
+ * uwb_rsv_sched_update - schedule an update of the DRP IEs
+ * @rc: the radio controller.
+ *
+ * To improve performance and ensure correctness with [ECMA-368] the
+ * number of SET-DRP-IE commands that are done are limited.
+ *
+ * DRP IEs update come from two sources: DRP events from the hardware
+ * which all occur at the beginning of the superframe ('syncronous'
+ * events) and reservation establishment/termination requests from
+ * PALs or timers ('asynchronous' events).
+ *
+ * A delayed work ensures that all the synchronous events result in
+ * one SET-DRP-IE command.
+ *
+ * Additional logic (the set_drp_ie_pending and rsv_updated_postponed
+ * flags) will prevent an asynchrous event starting a SET-DRP-IE
+ * command if one is currently awaiting a response.
+ *
+ * FIXME: this does leave a window where an asynchrous event can delay
+ * the SET-DRP-IE for a synchronous event by one superframe.
+ */
void uwb_rsv_sched_update(struct uwb_rc *rc)
{
- queue_work(rc->rsv_workq, &rc->rsv_update_work);
+ spin_lock(&rc->rsvs_lock);
+ if (!delayed_work_pending(&rc->rsv_update_work)) {
+ if (rc->set_drp_ie_pending > 0) {
+ rc->set_drp_ie_pending++;
+ goto unlock;
+ }
+ uwb_rsv_queue_update(rc);
+ }
+unlock:
+ spin_unlock(&rc->rsvs_lock);
}
/*
@@ -618,7 +888,8 @@
*/
static void uwb_rsv_update_work(struct work_struct *work)
{
- struct uwb_rc *rc = container_of(work, struct uwb_rc, rsv_update_work);
+ struct uwb_rc *rc = container_of(work, struct uwb_rc,
+ rsv_update_work.work);
bool ie_updated;
mutex_lock(&rc->rsvs_mutex);
@@ -630,25 +901,71 @@
ie_updated = true;
}
- if (ie_updated)
+ if (ie_updated && (rc->set_drp_ie_pending == 0))
uwb_rc_send_all_drp_ie(rc);
mutex_unlock(&rc->rsvs_mutex);
}
+static void uwb_rsv_alien_bp_work(struct work_struct *work)
+{
+ struct uwb_rc *rc = container_of(work, struct uwb_rc,
+ rsv_alien_bp_work.work);
+ struct uwb_rsv *rsv;
+
+ mutex_lock(&rc->rsvs_mutex);
+
+ list_for_each_entry(rsv, &rc->reservations, rc_node) {
+ if (rsv->type != UWB_DRP_TYPE_ALIEN_BP) {
+ rsv->callback(rsv);
+ }
+ }
+
+ mutex_unlock(&rc->rsvs_mutex);
+}
+
static void uwb_rsv_timer(unsigned long arg)
{
struct uwb_rsv *rsv = (struct uwb_rsv *)arg;
- rsv->expired = true;
- uwb_rsv_sched_update(rsv->rc);
+ queue_work(rsv->rc->rsv_workq, &rsv->handle_timeout_work);
+}
+
+/**
+ * uwb_rsv_remove_all - remove all reservations
+ * @rc: the radio controller
+ *
+ * A DRP IE update is not done.
+ */
+void uwb_rsv_remove_all(struct uwb_rc *rc)
+{
+ struct uwb_rsv *rsv, *t;
+
+ mutex_lock(&rc->rsvs_mutex);
+ list_for_each_entry_safe(rsv, t, &rc->reservations, rc_node) {
+ uwb_rsv_remove(rsv);
+ }
+ /* Cancel any postponed update. */
+ rc->set_drp_ie_pending = 0;
+ mutex_unlock(&rc->rsvs_mutex);
+
+ cancel_delayed_work_sync(&rc->rsv_update_work);
}
void uwb_rsv_init(struct uwb_rc *rc)
{
INIT_LIST_HEAD(&rc->reservations);
+ INIT_LIST_HEAD(&rc->cnflt_alien_list);
mutex_init(&rc->rsvs_mutex);
- INIT_WORK(&rc->rsv_update_work, uwb_rsv_update_work);
+ spin_lock_init(&rc->rsvs_lock);
+ INIT_DELAYED_WORK(&rc->rsv_update_work, uwb_rsv_update_work);
+ INIT_DELAYED_WORK(&rc->rsv_alien_bp_work, uwb_rsv_alien_bp_work);
+ rc->bow.can_reserve_extra_mases = true;
+ rc->bow.total_expired = 0;
+ rc->bow.window = UWB_DRP_BACKOFF_WIN_MIN >> 1;
+ init_timer(&rc->bow.timer);
+ rc->bow.timer.function = uwb_rsv_backoff_win_timer;
+ rc->bow.timer.data = (unsigned long)&rc->bow;
bitmap_complement(rc->uwb_dev.streams, rc->uwb_dev.streams, UWB_NUM_STREAMS);
}
@@ -667,14 +984,6 @@
void uwb_rsv_cleanup(struct uwb_rc *rc)
{
- struct uwb_rsv *rsv, *t;
-
- mutex_lock(&rc->rsvs_mutex);
- list_for_each_entry_safe(rsv, t, &rc->reservations, rc_node) {
- uwb_rsv_remove(rsv);
- }
- mutex_unlock(&rc->rsvs_mutex);
-
- cancel_work_sync(&rc->rsv_update_work);
+ uwb_rsv_remove_all(rc);
destroy_workqueue(rc->rsv_workq);
}
diff --git a/drivers/uwb/umc-bus.c b/drivers/uwb/umc-bus.c
index 2d8d62d..5ad3616 100644
--- a/drivers/uwb/umc-bus.c
+++ b/drivers/uwb/umc-bus.c
@@ -11,23 +11,48 @@
#include <linux/uwb/umc.h>
#include <linux/pci.h>
-static int umc_bus_unbind_helper(struct device *dev, void *data)
+static int umc_bus_pre_reset_helper(struct device *dev, void *data)
{
- struct device *parent = data;
+ int ret = 0;
- if (dev->parent == parent && dev->driver)
- device_release_driver(dev);
- return 0;
+ if (dev->driver) {
+ struct umc_dev *umc = to_umc_dev(dev);
+ struct umc_driver *umc_drv = to_umc_driver(dev->driver);
+
+ if (umc_drv->pre_reset)
+ ret = umc_drv->pre_reset(umc);
+ else
+ device_release_driver(dev);
+ }
+ return ret;
+}
+
+static int umc_bus_post_reset_helper(struct device *dev, void *data)
+{
+ int ret = 0;
+
+ if (dev->driver) {
+ struct umc_dev *umc = to_umc_dev(dev);
+ struct umc_driver *umc_drv = to_umc_driver(dev->driver);
+
+ if (umc_drv->post_reset)
+ ret = umc_drv->post_reset(umc);
+ } else
+ ret = device_attach(dev);
+
+ return ret;
}
/**
* umc_controller_reset - reset the whole UMC controller
* @umc: the UMC device for the radio controller.
*
- * Drivers will be unbound from all UMC devices belonging to the
- * controller and then the radio controller will be rebound. The
- * radio controller is expected to do a full hardware reset when it is
- * probed.
+ * Drivers or all capabilities of the controller will have their
+ * pre_reset methods called or be unbound from their device. Then all
+ * post_reset methods will be called or the drivers will be rebound.
+ *
+ * Radio controllers must provide pre_reset and post_reset methods and
+ * reset the hardware in their start method.
*
* If this is called while a probe() or remove() is in progress it
* will return -EAGAIN and not perform the reset.
@@ -35,14 +60,13 @@
int umc_controller_reset(struct umc_dev *umc)
{
struct device *parent = umc->dev.parent;
- int ret;
+ int ret = 0;
- if (down_trylock(&parent->sem))
+ if(down_trylock(&parent->sem))
return -EAGAIN;
- bus_for_each_dev(&umc_bus_type, NULL, parent, umc_bus_unbind_helper);
- ret = device_attach(&umc->dev);
- if (ret == 1)
- ret = 0;
+ ret = device_for_each_child(parent, parent, umc_bus_pre_reset_helper);
+ if (ret >= 0)
+ device_for_each_child(parent, parent, umc_bus_post_reset_helper);
up(&parent->sem);
return ret;
@@ -75,10 +99,10 @@
if (!dev->driver)
ret = device_attach(dev);
- return ret < 0 ? ret : 0;
+ return ret;
}
-static void umc_bus_rescan(void)
+static void umc_bus_rescan(struct device *parent)
{
int err;
@@ -86,7 +110,7 @@
* We can't use bus_rescan_devices() here as it deadlocks when
* it tries to retake the dev->parent semaphore.
*/
- err = bus_for_each_dev(&umc_bus_type, NULL, NULL, umc_bus_rescan_helper);
+ err = device_for_each_child(parent, NULL, umc_bus_rescan_helper);
if (err < 0)
printk(KERN_WARNING "%s: rescan of bus failed: %d\n",
KBUILD_MODNAME, err);
@@ -120,7 +144,7 @@
if (err)
put_device(dev);
else
- umc_bus_rescan();
+ umc_bus_rescan(dev->parent);
return err;
}
diff --git a/drivers/uwb/umc-dev.c b/drivers/uwb/umc-dev.c
index aa44e1c..1fc7d82 100644
--- a/drivers/uwb/umc-dev.c
+++ b/drivers/uwb/umc-dev.c
@@ -7,8 +7,6 @@
*/
#include <linux/kernel.h>
#include <linux/uwb/umc.h>
-#define D_LOCAL 0
-#include <linux/uwb/debug.h>
static void umc_device_release(struct device *dev)
{
@@ -31,8 +29,7 @@
umc = kzalloc(sizeof(struct umc_dev), GFP_KERNEL);
if (umc) {
- snprintf(umc->dev.bus_id, sizeof(umc->dev.bus_id), "%s-%d",
- parent->bus_id, n);
+ dev_set_name(&umc->dev, "%s-%d", dev_name(parent), n);
umc->dev.parent = parent;
umc->dev.bus = &umc_bus_type;
umc->dev.release = umc_device_release;
@@ -54,8 +51,6 @@
{
int err;
- d_fnstart(3, &umc->dev, "(umc_dev %p)\n", umc);
-
err = request_resource(umc->resource.parent, &umc->resource);
if (err < 0) {
dev_err(&umc->dev, "can't allocate resource range "
@@ -69,13 +64,11 @@
err = device_register(&umc->dev);
if (err < 0)
goto error_device_register;
- d_fnend(3, &umc->dev, "(umc_dev %p) = 0\n", umc);
return 0;
error_device_register:
release_resource(&umc->resource);
error_request_resource:
- d_fnend(3, &umc->dev, "(umc_dev %p) = %d\n", umc, err);
return err;
}
EXPORT_SYMBOL_GPL(umc_device_register);
@@ -95,10 +88,8 @@
if (!umc)
return;
dev = get_device(&umc->dev);
- d_fnstart(3, dev, "(umc_dev %p)\n", umc);
device_unregister(&umc->dev);
release_resource(&umc->resource);
- d_fnend(3, dev, "(umc_dev %p) = void\n", umc);
put_device(dev);
}
EXPORT_SYMBOL_GPL(umc_device_unregister);
diff --git a/drivers/uwb/uwb-debug.c b/drivers/uwb/uwb-debug.c
index 6d232c3..4a42993 100644
--- a/drivers/uwb/uwb-debug.c
+++ b/drivers/uwb/uwb-debug.c
@@ -4,6 +4,7 @@
*
* Copyright (C) 2005-2006 Intel Corporation
* Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ * Copyright (C) 2008 Cambridge Silicon Radio Ltd.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version
@@ -33,31 +34,9 @@
#include <linux/seq_file.h>
#include <linux/uwb/debug-cmd.h>
-#define D_LOCAL 0
-#include <linux/uwb/debug.h>
#include "uwb-internal.h"
-void dump_bytes(struct device *dev, const void *_buf, size_t rsize)
-{
- const char *buf = _buf;
- char line[32];
- size_t offset = 0;
- int cnt, cnt2;
- for (cnt = 0; cnt < rsize; cnt += 8) {
- size_t rtop = rsize - cnt < 8 ? rsize - cnt : 8;
- for (offset = cnt2 = 0; cnt2 < rtop; cnt2++) {
- offset += scnprintf(line + offset, sizeof(line) - offset,
- "%02x ", buf[cnt + cnt2] & 0xff);
- }
- if (dev)
- dev_info(dev, "%s\n", line);
- else
- printk(KERN_INFO "%s\n", line);
- }
-}
-EXPORT_SYMBOL_GPL(dump_bytes);
-
/*
* Debug interface
*
@@ -84,26 +63,23 @@
struct dentry *reservations_f;
struct dentry *accept_f;
struct dentry *drp_avail_f;
+ spinlock_t list_lock;
};
static struct dentry *root_dir;
static void uwb_dbg_rsv_cb(struct uwb_rsv *rsv)
{
- struct uwb_rc *rc = rsv->rc;
- struct device *dev = &rc->uwb_dev.dev;
- struct uwb_dev_addr devaddr;
- char owner[UWB_ADDR_STRSIZE], target[UWB_ADDR_STRSIZE];
+ struct uwb_dbg *dbg = rsv->pal_priv;
- uwb_dev_addr_print(owner, sizeof(owner), &rsv->owner->dev_addr);
- if (rsv->target.type == UWB_RSV_TARGET_DEV)
- devaddr = rsv->target.dev->dev_addr;
- else
- devaddr = rsv->target.devaddr;
- uwb_dev_addr_print(target, sizeof(target), &devaddr);
+ uwb_rsv_dump("debug", rsv);
- dev_dbg(dev, "debug: rsv %s -> %s: %s\n",
- owner, target, uwb_rsv_state_str(rsv->state));
+ if (rsv->state == UWB_RSV_STATE_NONE) {
+ spin_lock(&dbg->list_lock);
+ list_del(&rsv->pal_node);
+ spin_unlock(&dbg->list_lock);
+ uwb_rsv_destroy(rsv);
+ }
}
static int cmd_rsv_establish(struct uwb_rc *rc,
@@ -119,26 +95,27 @@
if (target == NULL)
return -ENODEV;
- rsv = uwb_rsv_create(rc, uwb_dbg_rsv_cb, NULL);
+ rsv = uwb_rsv_create(rc, uwb_dbg_rsv_cb, rc->dbg);
if (rsv == NULL) {
uwb_dev_put(target);
return -ENOMEM;
}
- rsv->owner = &rc->uwb_dev;
- rsv->target.type = UWB_RSV_TARGET_DEV;
- rsv->target.dev = target;
- rsv->type = cmd->type;
- rsv->max_mas = cmd->max_mas;
- rsv->min_mas = cmd->min_mas;
- rsv->sparsity = cmd->sparsity;
+ rsv->target.type = UWB_RSV_TARGET_DEV;
+ rsv->target.dev = target;
+ rsv->type = cmd->type;
+ rsv->max_mas = cmd->max_mas;
+ rsv->min_mas = cmd->min_mas;
+ rsv->max_interval = cmd->max_interval;
ret = uwb_rsv_establish(rsv);
if (ret)
uwb_rsv_destroy(rsv);
- else
+ else {
+ spin_lock(&(rc->dbg)->list_lock);
list_add_tail(&rsv->pal_node, &rc->dbg->rsvs);
-
+ spin_unlock(&(rc->dbg)->list_lock);
+ }
return ret;
}
@@ -148,21 +125,40 @@
struct uwb_rsv *rsv, *found = NULL;
int i = 0;
+ spin_lock(&(rc->dbg)->list_lock);
+
list_for_each_entry(rsv, &rc->dbg->rsvs, pal_node) {
if (i == cmd->index) {
found = rsv;
+ uwb_rsv_get(found);
break;
}
+ i++;
}
+
+ spin_unlock(&(rc->dbg)->list_lock);
+
if (!found)
return -EINVAL;
- list_del(&found->pal_node);
uwb_rsv_terminate(found);
+ uwb_rsv_put(found);
return 0;
}
+static int cmd_ie_add(struct uwb_rc *rc, struct uwb_dbg_cmd_ie *ie_to_add)
+{
+ return uwb_rc_ie_add(rc,
+ (const struct uwb_ie_hdr *) ie_to_add->data,
+ ie_to_add->len);
+}
+
+static int cmd_ie_rm(struct uwb_rc *rc, struct uwb_dbg_cmd_ie *ie_to_rm)
+{
+ return uwb_rc_ie_rm(rc, ie_to_rm->data[0]);
+}
+
static int command_open(struct inode *inode, struct file *file)
{
file->private_data = inode->i_private;
@@ -175,8 +171,8 @@
{
struct uwb_rc *rc = file->private_data;
struct uwb_dbg_cmd cmd;
- int ret;
-
+ int ret = 0;
+
if (len != sizeof(struct uwb_dbg_cmd))
return -EINVAL;
@@ -190,6 +186,18 @@
case UWB_DBG_CMD_RSV_TERMINATE:
ret = cmd_rsv_terminate(rc, &cmd.rsv_terminate);
break;
+ case UWB_DBG_CMD_IE_ADD:
+ ret = cmd_ie_add(rc, &cmd.ie_add);
+ break;
+ case UWB_DBG_CMD_IE_RM:
+ ret = cmd_ie_rm(rc, &cmd.ie_rm);
+ break;
+ case UWB_DBG_CMD_RADIO_START:
+ ret = uwb_radio_start(&rc->dbg->pal);
+ break;
+ case UWB_DBG_CMD_RADIO_STOP:
+ uwb_radio_stop(&rc->dbg->pal);
+ break;
default:
return -EINVAL;
}
@@ -283,12 +291,26 @@
.owner = THIS_MODULE,
};
-static void uwb_dbg_new_rsv(struct uwb_rsv *rsv)
+static void uwb_dbg_channel_changed(struct uwb_pal *pal, int channel)
{
- struct uwb_rc *rc = rsv->rc;
+ struct device *dev = &pal->rc->uwb_dev.dev;
- if (rc->dbg->accept)
- uwb_rsv_accept(rsv, uwb_dbg_rsv_cb, NULL);
+ if (channel > 0)
+ dev_info(dev, "debug: channel %d started\n", channel);
+ else
+ dev_info(dev, "debug: channel stopped\n");
+}
+
+static void uwb_dbg_new_rsv(struct uwb_pal *pal, struct uwb_rsv *rsv)
+{
+ struct uwb_dbg *dbg = container_of(pal, struct uwb_dbg, pal);
+
+ if (dbg->accept) {
+ spin_lock(&dbg->list_lock);
+ list_add_tail(&rsv->pal_node, &dbg->rsvs);
+ spin_unlock(&dbg->list_lock);
+ uwb_rsv_accept(rsv, uwb_dbg_rsv_cb, dbg);
+ }
}
/**
@@ -302,10 +324,14 @@
return;
INIT_LIST_HEAD(&rc->dbg->rsvs);
+ spin_lock_init(&(rc->dbg)->list_lock);
uwb_pal_init(&rc->dbg->pal);
+ rc->dbg->pal.rc = rc;
+ rc->dbg->pal.channel_changed = uwb_dbg_channel_changed;
rc->dbg->pal.new_rsv = uwb_dbg_new_rsv;
- uwb_pal_register(rc, &rc->dbg->pal);
+ uwb_pal_register(&rc->dbg->pal);
+
if (root_dir) {
rc->dbg->root_d = debugfs_create_dir(dev_name(&rc->uwb_dev.dev),
root_dir);
@@ -325,7 +351,7 @@
}
/**
- * uwb_dbg_add_rc - remove a radio controller's debug interface
+ * uwb_dbg_del_rc - remove a radio controller's debug interface
* @rc: the radio controller
*/
void uwb_dbg_del_rc(struct uwb_rc *rc)
@@ -336,10 +362,10 @@
return;
list_for_each_entry_safe(rsv, t, &rc->dbg->rsvs, pal_node) {
- uwb_rsv_destroy(rsv);
+ uwb_rsv_terminate(rsv);
}
- uwb_pal_unregister(rc, &rc->dbg->pal);
+ uwb_pal_unregister(&rc->dbg->pal);
if (root_dir) {
debugfs_remove(rc->dbg->drp_avail_f);
@@ -365,3 +391,16 @@
{
debugfs_remove(root_dir);
}
+
+/**
+ * uwb_dbg_create_pal_dir - create a debugfs directory for a PAL
+ * @pal: The PAL.
+ */
+struct dentry *uwb_dbg_create_pal_dir(struct uwb_pal *pal)
+{
+ struct uwb_rc *rc = pal->rc;
+
+ if (root_dir && rc->dbg && rc->dbg->root_d && pal->name)
+ return debugfs_create_dir(pal->name, rc->dbg->root_d);
+ return NULL;
+}
diff --git a/drivers/uwb/uwb-internal.h b/drivers/uwb/uwb-internal.h
index 2ad307d..d5bcfc1 100644
--- a/drivers/uwb/uwb-internal.h
+++ b/drivers/uwb/uwb-internal.h
@@ -66,14 +66,14 @@
unsigned channel, enum uwb_scan_type type,
unsigned bpst_offset);
extern int uwb_rc_send_all_drp_ie(struct uwb_rc *rc);
-extern ssize_t uwb_rc_print_IEs(struct uwb_rc *rc, char *, size_t);
-extern void uwb_rc_ie_init(struct uwb_rc *);
-extern void uwb_rc_ie_init(struct uwb_rc *);
-extern ssize_t uwb_rc_ie_setup(struct uwb_rc *);
-extern void uwb_rc_ie_release(struct uwb_rc *);
-extern int uwb_rc_ie_add(struct uwb_rc *,
- const struct uwb_ie_hdr *, size_t);
-extern int uwb_rc_ie_rm(struct uwb_rc *, enum uwb_ie);
+
+void uwb_rc_ie_init(struct uwb_rc *);
+int uwb_rc_ie_setup(struct uwb_rc *);
+void uwb_rc_ie_release(struct uwb_rc *);
+int uwb_ie_dump_hex(const struct uwb_ie_hdr *ies, size_t len,
+ char *buf, size_t size);
+int uwb_rc_set_ie(struct uwb_rc *, struct uwb_rc_cmd_set_ie *);
+
extern const char *uwb_rc_strerror(unsigned code);
@@ -92,6 +92,12 @@
struct uwb_rc_neh;
+extern int uwb_rc_cmd_async(struct uwb_rc *rc, const char *cmd_name,
+ struct uwb_rccb *cmd, size_t cmd_size,
+ u8 expected_type, u16 expected_event,
+ uwb_rc_cmd_cb_f cb, void *arg);
+
+
void uwb_rc_neh_create(struct uwb_rc *rc);
void uwb_rc_neh_destroy(struct uwb_rc *rc);
@@ -106,7 +112,69 @@
extern int uwb_est_create(void);
extern void uwb_est_destroy(void);
+/*
+ * UWB conflicting alien reservations
+ */
+struct uwb_cnflt_alien {
+ struct uwb_rc *rc;
+ struct list_head rc_node;
+ struct uwb_mas_bm mas;
+ struct timer_list timer;
+ struct work_struct cnflt_update_work;
+};
+enum uwb_uwb_rsv_alloc_result {
+ UWB_RSV_ALLOC_FOUND = 0,
+ UWB_RSV_ALLOC_NOT_FOUND,
+};
+
+enum uwb_rsv_mas_status {
+ UWB_RSV_MAS_NOT_AVAIL = 1,
+ UWB_RSV_MAS_SAFE,
+ UWB_RSV_MAS_UNSAFE,
+};
+
+struct uwb_rsv_col_set_info {
+ unsigned char start_col;
+ unsigned char interval;
+ unsigned char safe_mas_per_col;
+ unsigned char unsafe_mas_per_col;
+};
+
+struct uwb_rsv_col_info {
+ unsigned char max_avail_safe;
+ unsigned char max_avail_unsafe;
+ unsigned char highest_mas[UWB_MAS_PER_ZONE];
+ struct uwb_rsv_col_set_info csi;
+};
+
+struct uwb_rsv_row_info {
+ unsigned char avail[UWB_MAS_PER_ZONE];
+ unsigned char free_rows;
+ unsigned char used_rows;
+};
+
+/*
+ * UWB find allocation
+ */
+struct uwb_rsv_alloc_info {
+ unsigned char bm[UWB_MAS_PER_ZONE * UWB_NUM_ZONES];
+ struct uwb_rsv_col_info ci[UWB_NUM_ZONES];
+ struct uwb_rsv_row_info ri;
+ struct uwb_mas_bm *not_available;
+ struct uwb_mas_bm *result;
+ int min_mas;
+ int max_mas;
+ int max_interval;
+ int total_allocated_mases;
+ int safe_allocated_mases;
+ int unsafe_allocated_mases;
+ int interval;
+};
+
+int uwb_rsv_find_best_allocation(struct uwb_rsv *rsv, struct uwb_mas_bm *available,
+ struct uwb_mas_bm *result);
+void uwb_rsv_handle_drp_avail_change(struct uwb_rc *rc);
/*
* UWB Events & management daemon
*/
@@ -160,13 +228,14 @@
};
};
-extern void uwbd_start(void);
-extern void uwbd_stop(void);
+extern void uwbd_start(struct uwb_rc *rc);
+extern void uwbd_stop(struct uwb_rc *rc);
extern struct uwb_event *uwb_event_alloc(size_t, gfp_t gfp_mask);
extern void uwbd_event_queue(struct uwb_event *);
void uwbd_flush(struct uwb_rc *rc);
/* UWB event handlers */
+extern int uwbd_evt_handle_rc_ie_rcv(struct uwb_event *);
extern int uwbd_evt_handle_rc_beacon(struct uwb_event *);
extern int uwbd_evt_handle_rc_beacon_size(struct uwb_event *);
extern int uwbd_evt_handle_rc_bpoie_change(struct uwb_event *);
@@ -193,15 +262,6 @@
extern unsigned long beacon_timeout_ms;
-/** Beacon cache list */
-struct uwb_beca {
- struct list_head list;
- size_t entries;
- struct mutex mutex;
-};
-
-extern struct uwb_beca uwb_beca;
-
/**
* Beacon cache entry
*
@@ -228,9 +288,6 @@
struct uwb_beacon_frame;
extern ssize_t uwb_bce_print_IEs(struct uwb_dev *, struct uwb_beca_e *,
char *, size_t);
-extern struct uwb_beca_e *__uwb_beca_add(struct uwb_rc_evt_beacon *,
- struct uwb_beacon_frame *,
- unsigned long);
extern void uwb_bce_kfree(struct kref *_bce);
static inline void uwb_bce_get(struct uwb_beca_e *bce)
@@ -241,14 +298,19 @@
{
kref_put(&bce->refcnt, uwb_bce_kfree);
}
-extern void uwb_beca_purge(void);
-extern void uwb_beca_release(void);
+extern void uwb_beca_purge(struct uwb_rc *rc);
+extern void uwb_beca_release(struct uwb_rc *rc);
struct uwb_dev *uwb_dev_get_by_devaddr(struct uwb_rc *rc,
const struct uwb_dev_addr *devaddr);
struct uwb_dev *uwb_dev_get_by_macaddr(struct uwb_rc *rc,
const struct uwb_mac_addr *macaddr);
+int uwb_radio_setup(struct uwb_rc *rc);
+void uwb_radio_reset_state(struct uwb_rc *rc);
+void uwb_radio_shutdown(struct uwb_rc *rc);
+int uwb_radio_force_channel(struct uwb_rc *rc, int channel);
+
/* -- UWB Sysfs representation */
extern struct class uwb_rc_class;
extern struct device_attribute dev_attr_mac_address;
@@ -259,18 +321,29 @@
void uwb_rsv_init(struct uwb_rc *rc);
int uwb_rsv_setup(struct uwb_rc *rc);
void uwb_rsv_cleanup(struct uwb_rc *rc);
+void uwb_rsv_remove_all(struct uwb_rc *rc);
+void uwb_rsv_get(struct uwb_rsv *rsv);
+void uwb_rsv_put(struct uwb_rsv *rsv);
+bool uwb_rsv_has_two_drp_ies(struct uwb_rsv *rsv);
+void uwb_rsv_dump(char *text, struct uwb_rsv *rsv);
+int uwb_rsv_try_move(struct uwb_rsv *rsv, struct uwb_mas_bm *available);
+void uwb_rsv_backoff_win_timer(unsigned long arg);
+void uwb_rsv_backoff_win_increment(struct uwb_rc *rc);
+int uwb_rsv_status(struct uwb_rsv *rsv);
+int uwb_rsv_companion_status(struct uwb_rsv *rsv);
void uwb_rsv_set_state(struct uwb_rsv *rsv, enum uwb_rsv_state new_state);
void uwb_rsv_remove(struct uwb_rsv *rsv);
struct uwb_rsv *uwb_rsv_find(struct uwb_rc *rc, struct uwb_dev *src,
struct uwb_ie_drp *drp_ie);
void uwb_rsv_sched_update(struct uwb_rc *rc);
+void uwb_rsv_queue_update(struct uwb_rc *rc);
-void uwb_drp_handle_timeout(struct uwb_rsv *rsv);
int uwb_drp_ie_update(struct uwb_rsv *rsv);
void uwb_drp_ie_to_bm(struct uwb_mas_bm *bm, const struct uwb_ie_drp *drp_ie);
void uwb_drp_avail_init(struct uwb_rc *rc);
+void uwb_drp_available(struct uwb_rc *rc, struct uwb_mas_bm *avail);
int uwb_drp_avail_reserve_pending(struct uwb_rc *rc, struct uwb_mas_bm *mas);
void uwb_drp_avail_reserve(struct uwb_rc *rc, struct uwb_mas_bm *mas);
void uwb_drp_avail_release(struct uwb_rc *rc, struct uwb_mas_bm *mas);
@@ -289,8 +362,7 @@
void uwb_dbg_exit(void);
void uwb_dbg_add_rc(struct uwb_rc *rc);
void uwb_dbg_del_rc(struct uwb_rc *rc);
-
-/* Workarounds for version specific stuff */
+struct dentry *uwb_dbg_create_pal_dir(struct uwb_pal *pal);
static inline void uwb_dev_lock(struct uwb_dev *uwb_dev)
{
diff --git a/drivers/uwb/uwbd.c b/drivers/uwb/uwbd.c
index 7890841..57bd6bf 100644
--- a/drivers/uwb/uwbd.c
+++ b/drivers/uwb/uwbd.c
@@ -68,17 +68,13 @@
*
* Handler functions are called normally uwbd_evt_handle_*().
*/
-
#include <linux/kthread.h>
#include <linux/module.h>
#include <linux/freezer.h>
+
#include "uwb-internal.h"
-#define D_LOCAL 1
-#include <linux/uwb/debug.h>
-
-
-/**
+/*
* UWBD Event handler function signature
*
* Return !0 if the event needs not to be freed (ie the handler
@@ -101,9 +97,12 @@
const char *name;
};
-/** Table of handlers for and properties of the UWBD Radio Control Events */
-static
-struct uwbd_event uwbd_events[] = {
+/* Table of handlers for and properties of the UWBD Radio Control Events */
+static struct uwbd_event uwbd_urc_events[] = {
+ [UWB_RC_EVT_IE_RCV] = {
+ .handler = uwbd_evt_handle_rc_ie_rcv,
+ .name = "IE_RECEIVED"
+ },
[UWB_RC_EVT_BEACON] = {
.handler = uwbd_evt_handle_rc_beacon,
.name = "BEACON_RECEIVED"
@@ -142,23 +141,15 @@
size_t size;
};
-#define UWBD_EVT_TYPE_HANDLER(n,a) { \
- .name = (n), \
- .uwbd_events = (a), \
- .size = sizeof(a)/sizeof((a)[0]) \
-}
-
-
-/** Table of handlers for each UWBD Event type. */
-static
-struct uwbd_evt_type_handler uwbd_evt_type_handlers[] = {
- [UWB_RC_CET_GENERAL] = UWBD_EVT_TYPE_HANDLER("RC", uwbd_events)
+/* Table of handlers for each UWBD Event type. */
+static struct uwbd_evt_type_handler uwbd_urc_evt_type_handlers[] = {
+ [UWB_RC_CET_GENERAL] = {
+ .name = "URC",
+ .uwbd_events = uwbd_urc_events,
+ .size = ARRAY_SIZE(uwbd_urc_events),
+ },
};
-static const
-size_t uwbd_evt_type_handlers_len =
- sizeof(uwbd_evt_type_handlers) / sizeof(uwbd_evt_type_handlers[0]);
-
static const struct uwbd_event uwbd_message_handlers[] = {
[UWB_EVT_MSG_RESET] = {
.handler = uwbd_msg_handle_reset,
@@ -166,9 +157,7 @@
},
};
-static DEFINE_MUTEX(uwbd_event_mutex);
-
-/**
+/*
* Handle an URC event passed to the UWB Daemon
*
* @evt: the event to handle
@@ -188,6 +177,7 @@
static
int uwbd_event_handle_urc(struct uwb_event *evt)
{
+ int result = -EINVAL;
struct uwbd_evt_type_handler *type_table;
uwbd_evt_handler_f handler;
u8 type, context;
@@ -197,26 +187,24 @@
event = le16_to_cpu(evt->notif.rceb->wEvent);
context = evt->notif.rceb->bEventContext;
- if (type > uwbd_evt_type_handlers_len) {
- printk(KERN_ERR "UWBD: event type %u: unknown (too high)\n", type);
- return -EINVAL;
- }
- type_table = &uwbd_evt_type_handlers[type];
- if (type_table->uwbd_events == NULL) {
- printk(KERN_ERR "UWBD: event type %u: unknown\n", type);
- return -EINVAL;
- }
- if (event > type_table->size) {
- printk(KERN_ERR "UWBD: event %s[%u]: unknown (too high)\n",
- type_table->name, event);
- return -EINVAL;
- }
+ if (type > ARRAY_SIZE(uwbd_urc_evt_type_handlers))
+ goto out;
+ type_table = &uwbd_urc_evt_type_handlers[type];
+ if (type_table->uwbd_events == NULL)
+ goto out;
+ if (event > type_table->size)
+ goto out;
handler = type_table->uwbd_events[event].handler;
- if (handler == NULL) {
- printk(KERN_ERR "UWBD: event %s[%u]: unknown\n", type_table->name, event);
- return -EINVAL;
- }
- return (*handler)(evt);
+ if (handler == NULL)
+ goto out;
+
+ result = (*handler)(evt);
+out:
+ if (result < 0)
+ dev_err(&evt->rc->uwb_dev.dev,
+ "UWBD: event 0x%02x/%04x/%02x, handling failed: %d\n",
+ type, event, context, result);
+ return result;
}
static void uwbd_event_handle_message(struct uwb_event *evt)
@@ -231,19 +219,10 @@
return;
}
- /* If this is a reset event we need to drop the
- * uwbd_event_mutex or it deadlocks when the reset handler
- * attempts to flush the uwbd events. */
- if (evt->message == UWB_EVT_MSG_RESET)
- mutex_unlock(&uwbd_event_mutex);
-
result = uwbd_message_handlers[evt->message].handler(evt);
if (result < 0)
dev_err(&rc->uwb_dev.dev, "UWBD: '%s' message failed: %d\n",
uwbd_message_handlers[evt->message].name, result);
-
- if (evt->message == UWB_EVT_MSG_RESET)
- mutex_lock(&uwbd_event_mutex);
}
static void uwbd_event_handle(struct uwb_event *evt)
@@ -271,20 +250,6 @@
__uwb_rc_put(rc); /* for the __uwb_rc_get() in uwb_rc_notif_cb() */
}
-/* The UWB Daemon */
-
-
-/** Daemon's PID: used to decide if we can queue or not */
-static int uwbd_pid;
-/** Daemon's task struct for managing the kthread */
-static struct task_struct *uwbd_task;
-/** Daemon's waitqueue for waiting for new events */
-static DECLARE_WAIT_QUEUE_HEAD(uwbd_wq);
-/** Daemon's list of events; we queue/dequeue here */
-static struct list_head uwbd_event_list = LIST_HEAD_INIT(uwbd_event_list);
-/** Daemon's list lock to protect concurent access */
-static DEFINE_SPINLOCK(uwbd_event_list_lock);
-
/**
* UWB Daemon
@@ -298,65 +263,58 @@
* FIXME: should change so we don't have a 1HZ timer all the time, but
* only if there are devices.
*/
-static int uwbd(void *unused)
+static int uwbd(void *param)
{
+ struct uwb_rc *rc = param;
unsigned long flags;
- struct list_head list = LIST_HEAD_INIT(list);
- struct uwb_event *evt, *nxt;
+ struct uwb_event *evt;
int should_stop = 0;
+
while (1) {
wait_event_interruptible_timeout(
- uwbd_wq,
- !list_empty(&uwbd_event_list)
+ rc->uwbd.wq,
+ !list_empty(&rc->uwbd.event_list)
|| (should_stop = kthread_should_stop()),
HZ);
if (should_stop)
break;
try_to_freeze();
- mutex_lock(&uwbd_event_mutex);
- spin_lock_irqsave(&uwbd_event_list_lock, flags);
- list_splice_init(&uwbd_event_list, &list);
- spin_unlock_irqrestore(&uwbd_event_list_lock, flags);
- list_for_each_entry_safe(evt, nxt, &list, list_node) {
+ spin_lock_irqsave(&rc->uwbd.event_list_lock, flags);
+ if (!list_empty(&rc->uwbd.event_list)) {
+ evt = list_first_entry(&rc->uwbd.event_list, struct uwb_event, list_node);
list_del(&evt->list_node);
+ } else
+ evt = NULL;
+ spin_unlock_irqrestore(&rc->uwbd.event_list_lock, flags);
+
+ if (evt) {
uwbd_event_handle(evt);
kfree(evt);
}
- mutex_unlock(&uwbd_event_mutex);
- uwb_beca_purge(); /* Purge devices that left */
+ uwb_beca_purge(rc); /* Purge devices that left */
}
return 0;
}
/** Start the UWB daemon */
-void uwbd_start(void)
+void uwbd_start(struct uwb_rc *rc)
{
- uwbd_task = kthread_run(uwbd, NULL, "uwbd");
- if (uwbd_task == NULL)
+ rc->uwbd.task = kthread_run(uwbd, rc, "uwbd");
+ if (rc->uwbd.task == NULL)
printk(KERN_ERR "UWB: Cannot start management daemon; "
"UWB won't work\n");
else
- uwbd_pid = uwbd_task->pid;
+ rc->uwbd.pid = rc->uwbd.task->pid;
}
/* Stop the UWB daemon and free any unprocessed events */
-void uwbd_stop(void)
+void uwbd_stop(struct uwb_rc *rc)
{
- unsigned long flags;
- struct uwb_event *evt, *nxt;
- kthread_stop(uwbd_task);
- spin_lock_irqsave(&uwbd_event_list_lock, flags);
- uwbd_pid = 0;
- list_for_each_entry_safe(evt, nxt, &uwbd_event_list, list_node) {
- if (evt->type == UWB_EVT_TYPE_NOTIF)
- kfree(evt->notif.rceb);
- kfree(evt);
- }
- spin_unlock_irqrestore(&uwbd_event_list_lock, flags);
- uwb_beca_release();
+ kthread_stop(rc->uwbd.task);
+ uwbd_flush(rc);
}
/*
@@ -373,18 +331,20 @@
*/
void uwbd_event_queue(struct uwb_event *evt)
{
+ struct uwb_rc *rc = evt->rc;
unsigned long flags;
- spin_lock_irqsave(&uwbd_event_list_lock, flags);
- if (uwbd_pid != 0) {
- list_add(&evt->list_node, &uwbd_event_list);
- wake_up_all(&uwbd_wq);
+
+ spin_lock_irqsave(&rc->uwbd.event_list_lock, flags);
+ if (rc->uwbd.pid != 0) {
+ list_add(&evt->list_node, &rc->uwbd.event_list);
+ wake_up_all(&rc->uwbd.wq);
} else {
__uwb_rc_put(evt->rc);
if (evt->type == UWB_EVT_TYPE_NOTIF)
kfree(evt->notif.rceb);
kfree(evt);
}
- spin_unlock_irqrestore(&uwbd_event_list_lock, flags);
+ spin_unlock_irqrestore(&rc->uwbd.event_list_lock, flags);
return;
}
@@ -392,10 +352,8 @@
{
struct uwb_event *evt, *nxt;
- mutex_lock(&uwbd_event_mutex);
-
- spin_lock_irq(&uwbd_event_list_lock);
- list_for_each_entry_safe(evt, nxt, &uwbd_event_list, list_node) {
+ spin_lock_irq(&rc->uwbd.event_list_lock);
+ list_for_each_entry_safe(evt, nxt, &rc->uwbd.event_list, list_node) {
if (evt->rc == rc) {
__uwb_rc_put(rc);
list_del(&evt->list_node);
@@ -404,7 +362,5 @@
kfree(evt);
}
}
- spin_unlock_irq(&uwbd_event_list_lock);
-
- mutex_unlock(&uwbd_event_mutex);
+ spin_unlock_irq(&rc->uwbd.event_list_lock);
}
diff --git a/drivers/uwb/whc-rc.c b/drivers/uwb/whc-rc.c
index 1711dea..19a1dd1 100644
--- a/drivers/uwb/whc-rc.c
+++ b/drivers/uwb/whc-rc.c
@@ -39,7 +39,6 @@
* them to the hw and transfer the replies/notifications back to the
* UWB stack through the UWB daemon (UWBD).
*/
-#include <linux/version.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/pci.h>
@@ -49,10 +48,8 @@
#include <linux/uwb.h>
#include <linux/uwb/whci.h>
#include <linux/uwb/umc.h>
-#include "uwb-internal.h"
-#define D_LOCAL 0
-#include <linux/uwb/debug.h>
+#include "uwb-internal.h"
/**
* Descriptor for an instance of the UWB Radio Control Driver that
@@ -98,13 +95,8 @@
struct device *dev = &whcrc->umc_dev->dev;
u32 urccmd;
- d_fnstart(3, dev, "(%p, %p, %zu)\n", uwb_rc, cmd, cmd_size);
- might_sleep();
-
- if (cmd_size >= 4096) {
- result = -E2BIG;
- goto error;
- }
+ if (cmd_size >= 4096)
+ return -EINVAL;
/*
* If the URC is halted, then the hardware has reset itself.
@@ -115,16 +107,14 @@
if (le_readl(whcrc->rc_base + URCSTS) & URCSTS_HALTED) {
dev_err(dev, "requesting reset of halted radio controller\n");
uwb_rc_reset_all(uwb_rc);
- result = -EIO;
- goto error;
+ return -EIO;
}
result = wait_event_timeout(whcrc->cmd_wq,
!(le_readl(whcrc->rc_base + URCCMD) & URCCMD_ACTIVE), HZ/2);
if (result == 0) {
dev_err(dev, "device is not ready to execute commands\n");
- result = -ETIMEDOUT;
- goto error;
+ return -ETIMEDOUT;
}
memmove(whcrc->cmd_buf, cmd, cmd_size);
@@ -137,10 +127,7 @@
whcrc->rc_base + URCCMD);
spin_unlock(&whcrc->irq_lock);
-error:
- d_fnend(3, dev, "(%p, %p, %zu) = %d\n",
- uwb_rc, cmd, cmd_size, result);
- return result;
+ return 0;
}
static int whcrc_reset(struct uwb_rc *rc)
@@ -167,34 +154,25 @@
static
void whcrc_enable_events(struct whcrc *whcrc)
{
- struct device *dev = &whcrc->umc_dev->dev;
u32 urccmd;
- d_fnstart(4, dev, "(whcrc %p)\n", whcrc);
-
le_writeq(whcrc->evt_dma_buf, whcrc->rc_base + URCEVTADDR);
spin_lock(&whcrc->irq_lock);
urccmd = le_readl(whcrc->rc_base + URCCMD) & ~URCCMD_ACTIVE;
le_writel(urccmd | URCCMD_EARV, whcrc->rc_base + URCCMD);
spin_unlock(&whcrc->irq_lock);
-
- d_fnend(4, dev, "(whcrc %p) = void\n", whcrc);
}
static void whcrc_event_work(struct work_struct *work)
{
struct whcrc *whcrc = container_of(work, struct whcrc, event_work);
- struct device *dev = &whcrc->umc_dev->dev;
size_t size;
u64 urcevtaddr;
urcevtaddr = le_readq(whcrc->rc_base + URCEVTADDR);
size = urcevtaddr & URCEVTADDR_OFFSET_MASK;
- d_printf(3, dev, "received %zu octet event\n", size);
- d_dump(4, dev, whcrc->evt_buf, size > 32 ? 32 : size);
-
uwb_rc_neh_grok(whcrc->uwb_rc, whcrc->evt_buf, size);
whcrc_enable_events(whcrc);
}
@@ -217,22 +195,15 @@
return IRQ_NONE;
le_writel(urcsts & URCSTS_INT_MASK, whcrc->rc_base + URCSTS);
- d_printf(4, dev, "acked 0x%08x, urcsts 0x%08x\n",
- le_readl(whcrc->rc_base + URCSTS), urcsts);
-
if (urcsts & URCSTS_HSE) {
dev_err(dev, "host system error -- hardware halted\n");
/* FIXME: do something sensible here */
goto out;
}
- if (urcsts & URCSTS_ER) {
- d_printf(3, dev, "ER: event ready\n");
+ if (urcsts & URCSTS_ER)
schedule_work(&whcrc->event_work);
- }
- if (urcsts & URCSTS_RCI) {
- d_printf(3, dev, "RCI: ready to execute another command\n");
+ if (urcsts & URCSTS_RCI)
wake_up_all(&whcrc->cmd_wq);
- }
out:
return IRQ_HANDLED;
}
@@ -251,8 +222,7 @@
whcrc->area = umc_dev->resource.start;
whcrc->rc_len = umc_dev->resource.end - umc_dev->resource.start + 1;
result = -EBUSY;
- if (request_mem_region(whcrc->area, whcrc->rc_len, KBUILD_MODNAME)
- == NULL) {
+ if (request_mem_region(whcrc->area, whcrc->rc_len, KBUILD_MODNAME) == NULL) {
dev_err(dev, "can't request URC region (%zu bytes @ 0x%lx): %d\n",
whcrc->rc_len, whcrc->area, result);
goto error_request_region;
@@ -287,8 +257,6 @@
dev_err(dev, "Can't allocate evt transfer buffer\n");
goto error_evt_buffer;
}
- d_printf(3, dev, "UWB RC Interface: %zu bytes at 0x%p, irq %u\n",
- whcrc->rc_len, whcrc->rc_base, umc_dev->irq);
return 0;
error_evt_buffer:
@@ -333,47 +301,23 @@
static int whcrc_start_rc(struct uwb_rc *rc)
{
struct whcrc *whcrc = rc->priv;
- int result = 0;
struct device *dev = &whcrc->umc_dev->dev;
- unsigned long start, duration;
/* Reset the thing */
le_writel(URCCMD_RESET, whcrc->rc_base + URCCMD);
- if (d_test(3))
- start = jiffies;
if (whci_wait_for(dev, whcrc->rc_base + URCCMD, URCCMD_RESET, 0,
- 5000, "device to reset at init") < 0) {
- result = -EBUSY;
- goto error;
- } else if (d_test(3)) {
- duration = jiffies - start;
- if (duration > msecs_to_jiffies(40))
- dev_err(dev, "Device took %ums to "
- "reset. MAX expected: 40ms\n",
- jiffies_to_msecs(duration));
- }
+ 5000, "hardware reset") < 0)
+ return -EBUSY;
/* Set the event buffer, start the controller (enable IRQs later) */
le_writel(0, whcrc->rc_base + URCINTR);
le_writel(URCCMD_RS, whcrc->rc_base + URCCMD);
- result = -ETIMEDOUT;
- if (d_test(3))
- start = jiffies;
if (whci_wait_for(dev, whcrc->rc_base + URCSTS, URCSTS_HALTED, 0,
- 5000, "device to start") < 0)
- goto error;
- if (d_test(3)) {
- duration = jiffies - start;
- if (duration > msecs_to_jiffies(40))
- dev_err(dev, "Device took %ums to start. "
- "MAX expected: 40ms\n",
- jiffies_to_msecs(duration));
- }
+ 5000, "radio controller start") < 0)
+ return -ETIMEDOUT;
whcrc_enable_events(whcrc);
- result = 0;
le_writel(URCINTR_EN_ALL, whcrc->rc_base + URCINTR);
-error:
- return result;
+ return 0;
}
@@ -395,7 +339,7 @@
le_writel(0, whcrc->rc_base + URCCMD);
whci_wait_for(&umc_dev->dev, whcrc->rc_base + URCSTS,
- URCSTS_HALTED, 0, 40, "URCSTS.HALTED");
+ URCSTS_HALTED, URCSTS_HALTED, 100, "radio controller stop");
}
static void whcrc_init(struct whcrc *whcrc)
@@ -421,7 +365,6 @@
struct whcrc *whcrc;
struct device *dev = &umc_dev->dev;
- d_fnstart(3, dev, "(umc_dev %p)\n", umc_dev);
result = -ENOMEM;
uwb_rc = uwb_rc_alloc();
if (uwb_rc == NULL) {
@@ -453,7 +396,6 @@
if (result < 0)
goto error_rc_add;
umc_set_drvdata(umc_dev, whcrc);
- d_fnend(3, dev, "(umc_dev %p) = 0\n", umc_dev);
return 0;
error_rc_add:
@@ -463,7 +405,6 @@
error_alloc:
uwb_rc_put(uwb_rc);
error_rc_alloc:
- d_fnend(3, dev, "(umc_dev %p) = %d\n", umc_dev, result);
return result;
}
@@ -486,7 +427,24 @@
whcrc_release_rc_umc(whcrc);
kfree(whcrc);
uwb_rc_put(uwb_rc);
- d_printf(1, &umc_dev->dev, "freed whcrc %p\n", whcrc);
+}
+
+static int whcrc_pre_reset(struct umc_dev *umc)
+{
+ struct whcrc *whcrc = umc_get_drvdata(umc);
+ struct uwb_rc *uwb_rc = whcrc->uwb_rc;
+
+ uwb_rc_pre_reset(uwb_rc);
+ return 0;
+}
+
+static int whcrc_post_reset(struct umc_dev *umc)
+{
+ struct whcrc *whcrc = umc_get_drvdata(umc);
+ struct uwb_rc *uwb_rc = whcrc->uwb_rc;
+
+ uwb_rc_post_reset(uwb_rc);
+ return 0;
}
/* PCI device ID's that we handle [so it gets loaded] */
@@ -497,10 +455,12 @@
MODULE_DEVICE_TABLE(pci, whcrc_id_table);
static struct umc_driver whcrc_driver = {
- .name = "whc-rc",
- .cap_id = UMC_CAP_ID_WHCI_RC,
- .probe = whcrc_probe,
- .remove = whcrc_remove,
+ .name = "whc-rc",
+ .cap_id = UMC_CAP_ID_WHCI_RC,
+ .probe = whcrc_probe,
+ .remove = whcrc_remove,
+ .pre_reset = whcrc_pre_reset,
+ .post_reset = whcrc_post_reset,
};
static int __init whcrc_driver_init(void)
diff --git a/drivers/uwb/whci.c b/drivers/uwb/whci.c
index 3df2388..1f8964e 100644
--- a/drivers/uwb/whci.c
+++ b/drivers/uwb/whci.c
@@ -67,11 +67,11 @@
val = le_readl(reg);
if ((val & mask) == result)
break;
- msleep(10);
if (t >= max_ms) {
- dev_err(dev, "timed out waiting for %s ", tag);
+ dev_err(dev, "%s timed out\n", tag);
return -ETIMEDOUT;
}
+ msleep(10);
t += 10;
}
return 0;
@@ -111,7 +111,7 @@
+ UWBCAPDATA_TO_OFFSET(capdata);
umc->resource.end = umc->resource.start
+ (n == 0 ? 0x20 : UWBCAPDATA_TO_SIZE(capdata)) - 1;
- umc->resource.name = umc->dev.bus_id;
+ umc->resource.name = dev_name(&umc->dev);
umc->resource.flags = card->pci->resource[bar].flags;
umc->resource.parent = &card->pci->resource[bar];
umc->irq = card->pci->irq;
diff --git a/drivers/uwb/wlp/eda.c b/drivers/uwb/wlp/eda.c
index 10985fa..69e0200 100644
--- a/drivers/uwb/wlp/eda.c
+++ b/drivers/uwb/wlp/eda.c
@@ -51,9 +51,7 @@
* the tag and address of the transmitting neighbor.
*/
-#define D_LOCAL 5
#include <linux/netdevice.h>
-#include <linux/uwb/debug.h>
#include <linux/etherdevice.h>
#include <linux/wlp.h>
#include "wlp-internal.h"
@@ -304,7 +302,6 @@
{
int result = 0;
struct wlp *wlp = container_of(eda, struct wlp, eda);
- struct device *dev = &wlp->rc->uwb_dev.dev;
struct wlp_eda_node *itr;
unsigned long flags;
int found = 0;
@@ -313,26 +310,14 @@
list_for_each_entry(itr, &eda->cache, list_node) {
if (!memcmp(itr->virt_addr, virt_addr,
sizeof(itr->virt_addr))) {
- d_printf(6, dev, "EDA: looking for %pM hit %02x:%02x "
- "wss %p tag 0x%02x state %u\n",
- virt_addr,
- itr->dev_addr.data[1],
- itr->dev_addr.data[0], itr->wss,
- itr->tag, itr->state);
result = (*function)(wlp, itr, priv);
*dev_addr = itr->dev_addr;
found = 1;
break;
- } else
- d_printf(6, dev, "EDA: looking for %pM against %pM miss\n",
- virt_addr, itr->virt_addr);
+ }
}
- if (!found) {
- if (printk_ratelimit())
- dev_err(dev, "EDA: Eth addr %pM not found.\n",
- virt_addr);
+ if (!found)
result = -ENODEV;
- }
spin_unlock_irqrestore(&eda->lock, flags);
return result;
}
diff --git a/drivers/uwb/wlp/messages.c b/drivers/uwb/wlp/messages.c
index a64cb82..aa42fce 100644
--- a/drivers/uwb/wlp/messages.c
+++ b/drivers/uwb/wlp/messages.c
@@ -24,8 +24,7 @@
*/
#include <linux/wlp.h>
-#define D_LOCAL 6
-#include <linux/uwb/debug.h>
+
#include "wlp-internal.h"
static
@@ -105,24 +104,18 @@
#define wlp_set(type, type_code, name) \
static size_t wlp_set_##name(struct wlp_attr_##name *attr, type value) \
{ \
- d_fnstart(6, NULL, "(attribute %p)\n", attr); \
wlp_set_attr_hdr(&attr->hdr, type_code, \
sizeof(*attr) - sizeof(struct wlp_attr_hdr)); \
attr->name = value; \
- d_dump(6, NULL, attr, sizeof(*attr)); \
- d_fnend(6, NULL, "(attribute %p)\n", attr); \
return sizeof(*attr); \
}
#define wlp_pset(type, type_code, name) \
static size_t wlp_set_##name(struct wlp_attr_##name *attr, type value) \
{ \
- d_fnstart(6, NULL, "(attribute %p)\n", attr); \
wlp_set_attr_hdr(&attr->hdr, type_code, \
sizeof(*attr) - sizeof(struct wlp_attr_hdr)); \
attr->name = *value; \
- d_dump(6, NULL, attr, sizeof(*attr)); \
- d_fnend(6, NULL, "(attribute %p)\n", attr); \
return sizeof(*attr); \
}
@@ -139,11 +132,8 @@
static size_t wlp_set_##name(struct wlp_attr_##name *attr, type value, \
size_t len) \
{ \
- d_fnstart(6, NULL, "(attribute %p)\n", attr); \
wlp_set_attr_hdr(&attr->hdr, type_code, len); \
memcpy(attr->name, value, len); \
- d_dump(6, NULL, attr, sizeof(*attr) + len); \
- d_fnend(6, NULL, "(attribute %p)\n", attr); \
return sizeof(*attr) + len; \
}
@@ -182,7 +172,7 @@
size_t datalen;
void *ptr = attr->wss_info;
size_t used = sizeof(*attr);
- d_fnstart(6, NULL, "(attribute %p)\n", attr);
+
datalen = sizeof(struct wlp_wss_info) + strlen(wss->name);
wlp_set_attr_hdr(&attr->hdr, WLP_ATTR_WSS_INFO, datalen);
used = wlp_set_wssid(ptr, &wss->wssid);
@@ -190,9 +180,6 @@
used += wlp_set_accept_enrl(ptr + used, wss->accept_enroll);
used += wlp_set_wss_sec_status(ptr + used, wss->secure_status);
used += wlp_set_wss_bcast(ptr + used, &wss->bcast);
- d_dump(6, NULL, attr, sizeof(*attr) + datalen);
- d_fnend(6, NULL, "(attribute %p, used %d)\n",
- attr, (int)(sizeof(*attr) + used));
return sizeof(*attr) + used;
}
@@ -414,7 +401,6 @@
size_t used = 0;
ssize_t result = -EINVAL;
- d_printf(6, dev, "WLP: WSS info: Retrieving WSS name\n");
result = wlp_get_wss_name(wlp, ptr, info->name, buflen);
if (result < 0) {
dev_err(dev, "WLP: unable to obtain WSS name from "
@@ -422,7 +408,7 @@
goto error_parse;
}
used += result;
- d_printf(6, dev, "WLP: WSS info: Retrieving accept enroll\n");
+
result = wlp_get_accept_enrl(wlp, ptr + used, &info->accept_enroll,
buflen - used);
if (result < 0) {
@@ -437,7 +423,7 @@
goto error_parse;
}
used += result;
- d_printf(6, dev, "WLP: WSS info: Retrieving secure status\n");
+
result = wlp_get_wss_sec_status(wlp, ptr + used, &info->sec_status,
buflen - used);
if (result < 0) {
@@ -452,7 +438,7 @@
goto error_parse;
}
used += result;
- d_printf(6, dev, "WLP: WSS info: Retrieving broadcast\n");
+
result = wlp_get_wss_bcast(wlp, ptr + used, &info->bcast,
buflen - used);
if (result < 0) {
@@ -530,7 +516,7 @@
len = result;
used = sizeof(*attr);
ptr = attr;
- d_printf(6, dev, "WLP: WSS info: Retrieving WSSID\n");
+
result = wlp_get_wssid(wlp, ptr + used, wssid, buflen - used);
if (result < 0) {
dev_err(dev, "WLP: unable to obtain WSSID from WSS info.\n");
@@ -553,8 +539,6 @@
goto out;
}
result = used;
- d_printf(6, dev, "WLP: Successfully parsed WLP information "
- "attribute. used %zu bytes\n", used);
out:
return result;
}
@@ -598,8 +582,6 @@
struct wlp_wssid_e *wssid_e;
char buf[WLP_WSS_UUID_STRSIZE];
- d_fnstart(6, dev, "wlp %p, attr %p, neighbor %p, wss %p, buflen %d \n",
- wlp, attr, neighbor, wss, (int)buflen);
if (buflen < 0)
goto out;
@@ -638,8 +620,7 @@
wss->accept_enroll = wss_info.accept_enroll;
wss->state = WLP_WSS_STATE_PART_ENROLLED;
wlp_wss_uuid_print(buf, sizeof(buf), &wssid);
- d_printf(2, dev, "WLP: Found WSS %s. Enrolling.\n",
- buf);
+ dev_dbg(dev, "WLP: Found WSS %s. Enrolling.\n", buf);
} else {
wssid_e = wlp_create_wssid_e(wlp, neighbor);
if (wssid_e == NULL) {
@@ -660,9 +641,6 @@
if (result < 0 && !enroll) /* this was a discovery */
wlp_remove_neighbor_tmp_info(neighbor);
out:
- d_fnend(6, dev, "wlp %p, attr %p, neighbor %p, wss %p, buflen %d, "
- "result %d \n", wlp, attr, neighbor, wss, (int)buflen,
- (int)result);
return result;
}
@@ -718,7 +696,6 @@
struct sk_buff *_skb;
void *d1_itr;
- d_fnstart(6, dev, "wlp %p\n", wlp);
if (wlp->dev_info == NULL) {
result = __wlp_setup_device_info(wlp);
if (result < 0) {
@@ -728,24 +705,6 @@
}
}
info = wlp->dev_info;
- d_printf(6, dev, "Local properties:\n"
- "Device name (%d bytes): %s\n"
- "Model name (%d bytes): %s\n"
- "Manufacturer (%d bytes): %s\n"
- "Model number (%d bytes): %s\n"
- "Serial number (%d bytes): %s\n"
- "Primary device type: \n"
- " Category: %d \n"
- " OUI: %02x:%02x:%02x \n"
- " OUI Subdivision: %u \n",
- (int)strlen(info->name), info->name,
- (int)strlen(info->model_name), info->model_name,
- (int)strlen(info->manufacturer), info->manufacturer,
- (int)strlen(info->model_nr), info->model_nr,
- (int)strlen(info->serial), info->serial,
- info->prim_dev_type.category,
- info->prim_dev_type.OUI[0], info->prim_dev_type.OUI[1],
- info->prim_dev_type.OUI[2], info->prim_dev_type.OUIsubdiv);
_skb = dev_alloc_skb(sizeof(*_d1)
+ sizeof(struct wlp_attr_uuid_e)
+ sizeof(struct wlp_attr_wss_sel_mthd)
@@ -768,7 +727,6 @@
goto error;
}
_d1 = (void *) _skb->data;
- d_printf(6, dev, "D1 starts at %p \n", _d1);
_d1->hdr.mux_hdr = cpu_to_le16(WLP_PROTOCOL_ID);
_d1->hdr.type = WLP_FRAME_ASSOCIATION;
_d1->type = WLP_ASSOC_D1;
@@ -791,25 +749,8 @@
used += wlp_set_prim_dev_type(d1_itr + used, &info->prim_dev_type);
used += wlp_set_wlp_assc_err(d1_itr + used, WLP_ASSOC_ERROR_NONE);
skb_put(_skb, sizeof(*_d1) + used);
- d_printf(6, dev, "D1 message:\n");
- d_dump(6, dev, _d1, sizeof(*_d1)
- + sizeof(struct wlp_attr_uuid_e)
- + sizeof(struct wlp_attr_wss_sel_mthd)
- + sizeof(struct wlp_attr_dev_name)
- + strlen(info->name)
- + sizeof(struct wlp_attr_manufacturer)
- + strlen(info->manufacturer)
- + sizeof(struct wlp_attr_model_name)
- + strlen(info->model_name)
- + sizeof(struct wlp_attr_model_nr)
- + strlen(info->model_nr)
- + sizeof(struct wlp_attr_serial)
- + strlen(info->serial)
- + sizeof(struct wlp_attr_prim_dev_type)
- + sizeof(struct wlp_attr_wlp_assc_err));
*skb = _skb;
error:
- d_fnend(6, dev, "wlp %p, result = %d\n", wlp, result);
return result;
}
@@ -837,7 +778,6 @@
void *d2_itr;
size_t mem_needed;
- d_fnstart(6, dev, "wlp %p\n", wlp);
if (wlp->dev_info == NULL) {
result = __wlp_setup_device_info(wlp);
if (result < 0) {
@@ -847,24 +787,6 @@
}
}
info = wlp->dev_info;
- d_printf(6, dev, "Local properties:\n"
- "Device name (%d bytes): %s\n"
- "Model name (%d bytes): %s\n"
- "Manufacturer (%d bytes): %s\n"
- "Model number (%d bytes): %s\n"
- "Serial number (%d bytes): %s\n"
- "Primary device type: \n"
- " Category: %d \n"
- " OUI: %02x:%02x:%02x \n"
- " OUI Subdivision: %u \n",
- (int)strlen(info->name), info->name,
- (int)strlen(info->model_name), info->model_name,
- (int)strlen(info->manufacturer), info->manufacturer,
- (int)strlen(info->model_nr), info->model_nr,
- (int)strlen(info->serial), info->serial,
- info->prim_dev_type.category,
- info->prim_dev_type.OUI[0], info->prim_dev_type.OUI[1],
- info->prim_dev_type.OUI[2], info->prim_dev_type.OUIsubdiv);
mem_needed = sizeof(*_d2)
+ sizeof(struct wlp_attr_uuid_e)
+ sizeof(struct wlp_attr_uuid_r)
@@ -892,7 +814,6 @@
goto error;
}
_d2 = (void *) _skb->data;
- d_printf(6, dev, "D2 starts at %p \n", _d2);
_d2->hdr.mux_hdr = cpu_to_le16(WLP_PROTOCOL_ID);
_d2->hdr.type = WLP_FRAME_ASSOCIATION;
_d2->type = WLP_ASSOC_D2;
@@ -917,11 +838,8 @@
used += wlp_set_prim_dev_type(d2_itr + used, &info->prim_dev_type);
used += wlp_set_wlp_assc_err(d2_itr + used, WLP_ASSOC_ERROR_NONE);
skb_put(_skb, sizeof(*_d2) + used);
- d_printf(6, dev, "D2 message:\n");
- d_dump(6, dev, _d2, mem_needed);
*skb = _skb;
error:
- d_fnend(6, dev, "wlp %p, result = %d\n", wlp, result);
return result;
}
@@ -947,7 +865,6 @@
struct sk_buff *_skb;
struct wlp_nonce tmp;
- d_fnstart(6, dev, "wlp %p\n", wlp);
_skb = dev_alloc_skb(sizeof(*f0));
if (_skb == NULL) {
dev_err(dev, "WLP: Unable to allocate memory for F0 "
@@ -955,7 +872,6 @@
goto error_alloc;
}
f0 = (void *) _skb->data;
- d_printf(6, dev, "F0 starts at %p \n", f0);
f0->f0_hdr.hdr.mux_hdr = cpu_to_le16(WLP_PROTOCOL_ID);
f0->f0_hdr.hdr.type = WLP_FRAME_ASSOCIATION;
f0->f0_hdr.type = WLP_ASSOC_F0;
@@ -969,7 +885,6 @@
*skb = _skb;
result = 0;
error_alloc:
- d_fnend(6, dev, "wlp %p, result %d \n", wlp, result);
return result;
}
@@ -1242,12 +1157,9 @@
enum wlp_wss_sel_mthd sel_mthd = 0;
struct wlp_device_info dev_info;
enum wlp_assc_error assc_err;
- char uuid[WLP_WSS_UUID_STRSIZE];
struct sk_buff *resp = NULL;
/* Parse D1 frame */
- d_fnstart(6, dev, "WLP: handle D1 frame. wlp = %p, skb = %p\n",
- wlp, skb);
mutex_lock(&wss->mutex);
mutex_lock(&wlp->mutex); /* to access wlp->uuid */
memset(&dev_info, 0, sizeof(dev_info));
@@ -1258,30 +1170,6 @@
kfree_skb(skb);
goto out;
}
- wlp_wss_uuid_print(uuid, sizeof(uuid), &uuid_e);
- d_printf(6, dev, "From D1 frame:\n"
- "UUID-E: %s\n"
- "Selection method: %d\n"
- "Device name (%d bytes): %s\n"
- "Model name (%d bytes): %s\n"
- "Manufacturer (%d bytes): %s\n"
- "Model number (%d bytes): %s\n"
- "Serial number (%d bytes): %s\n"
- "Primary device type: \n"
- " Category: %d \n"
- " OUI: %02x:%02x:%02x \n"
- " OUI Subdivision: %u \n",
- uuid, sel_mthd,
- (int)strlen(dev_info.name), dev_info.name,
- (int)strlen(dev_info.model_name), dev_info.model_name,
- (int)strlen(dev_info.manufacturer), dev_info.manufacturer,
- (int)strlen(dev_info.model_nr), dev_info.model_nr,
- (int)strlen(dev_info.serial), dev_info.serial,
- dev_info.prim_dev_type.category,
- dev_info.prim_dev_type.OUI[0],
- dev_info.prim_dev_type.OUI[1],
- dev_info.prim_dev_type.OUI[2],
- dev_info.prim_dev_type.OUIsubdiv);
kfree_skb(skb);
if (!wlp_uuid_is_set(&wlp->uuid)) {
@@ -1316,7 +1204,6 @@
kfree(frame_ctx);
mutex_unlock(&wlp->mutex);
mutex_unlock(&wss->mutex);
- d_fnend(6, dev, "WLP: handle D1 frame. wlp = %p\n", wlp);
}
/**
@@ -1546,10 +1433,8 @@
void *ptr = skb->data;
size_t len = skb->len;
size_t used;
- char buf[WLP_WSS_UUID_STRSIZE];
struct wlp_frame_assoc *assoc = ptr;
- d_fnstart(6, dev, "wlp %p, skb %p \n", wlp, skb);
used = sizeof(*assoc);
result = wlp_get_wssid(wlp, ptr + used, wssid, len - used);
if (result < 0) {
@@ -1572,14 +1457,7 @@
wlp_assoc_frame_str(assoc->type));
goto error_parse;
}
- wlp_wss_uuid_print(buf, sizeof(buf), wssid);
- d_printf(6, dev, "WLP: parsed: WSSID %s, tag 0x%02x, virt "
- "%02x:%02x:%02x:%02x:%02x:%02x \n", buf, *tag,
- virt_addr->data[0], virt_addr->data[1], virt_addr->data[2],
- virt_addr->data[3], virt_addr->data[4], virt_addr->data[5]);
-
error_parse:
- d_fnend(6, dev, "wlp %p, skb %p, result = %d \n", wlp, skb, result);
return result;
}
@@ -1600,7 +1478,6 @@
} *c;
struct sk_buff *_skb;
- d_fnstart(6, dev, "wlp %p, wss %p \n", wlp, wss);
_skb = dev_alloc_skb(sizeof(*c));
if (_skb == NULL) {
dev_err(dev, "WLP: Unable to allocate memory for C1/C2 "
@@ -1608,7 +1485,6 @@
goto error_alloc;
}
c = (void *) _skb->data;
- d_printf(6, dev, "C1/C2 starts at %p \n", c);
c->c_hdr.hdr.mux_hdr = cpu_to_le16(WLP_PROTOCOL_ID);
c->c_hdr.hdr.type = WLP_FRAME_ASSOCIATION;
c->c_hdr.type = type;
@@ -1616,12 +1492,9 @@
wlp_set_msg_type(&c->c_hdr.msg_type, type);
wlp_set_wssid(&c->wssid, &wss->wssid);
skb_put(_skb, sizeof(*c));
- d_printf(6, dev, "C1/C2 message:\n");
- d_dump(6, dev, c, sizeof(*c));
*skb = _skb;
result = 0;
error_alloc:
- d_fnend(6, dev, "wlp %p, wss %p, result %d \n", wlp, wss, result);
return result;
}
@@ -1660,7 +1533,6 @@
} *c;
struct sk_buff *_skb;
- d_fnstart(6, dev, "wlp %p, wss %p \n", wlp, wss);
_skb = dev_alloc_skb(sizeof(*c));
if (_skb == NULL) {
dev_err(dev, "WLP: Unable to allocate memory for C3/C4 "
@@ -1668,7 +1540,6 @@
goto error_alloc;
}
c = (void *) _skb->data;
- d_printf(6, dev, "C3/C4 starts at %p \n", c);
c->c_hdr.hdr.mux_hdr = cpu_to_le16(WLP_PROTOCOL_ID);
c->c_hdr.hdr.type = WLP_FRAME_ASSOCIATION;
c->c_hdr.type = type;
@@ -1678,12 +1549,9 @@
wlp_set_wss_tag(&c->wss_tag, wss->tag);
wlp_set_wss_virt(&c->wss_virt, &wss->virtual_addr);
skb_put(_skb, sizeof(*c));
- d_printf(6, dev, "C3/C4 message:\n");
- d_dump(6, dev, c, sizeof(*c));
*skb = _skb;
result = 0;
error_alloc:
- d_fnend(6, dev, "wlp %p, wss %p, result %d \n", wlp, wss, result);
return result;
}
@@ -1709,10 +1577,7 @@
struct device *dev = &wlp->rc->uwb_dev.dev; \
int result; \
struct sk_buff *skb = NULL; \
- d_fnstart(6, dev, "wlp %p, wss %p, neighbor: %02x:%02x\n", \
- wlp, wss, dev_addr->data[1], dev_addr->data[0]); \
- d_printf(6, dev, "WLP: Constructing %s frame. \n", \
- wlp_assoc_frame_str(id)); \
+ \
/* Build the frame */ \
result = wlp_build_assoc_##type(wlp, wss, &skb); \
if (result < 0) { \
@@ -1721,9 +1586,6 @@
goto error_build_assoc; \
} \
/* Send the frame */ \
- d_printf(6, dev, "Transmitting %s frame to %02x:%02x \n", \
- wlp_assoc_frame_str(id), \
- dev_addr->data[1], dev_addr->data[0]); \
BUG_ON(wlp->xmit_frame == NULL); \
result = wlp->xmit_frame(wlp, skb, dev_addr); \
if (result < 0) { \
@@ -1740,8 +1602,6 @@
/* We could try again ... */ \
dev_kfree_skb_any(skb);/*we need to free if tx fails*/ \
error_build_assoc: \
- d_fnend(6, dev, "wlp %p, wss %p, neighbor: %02x:%02x\n", \
- wlp, wss, dev_addr->data[1], dev_addr->data[0]); \
return result; \
}
@@ -1794,12 +1654,9 @@
struct uwb_dev_addr *src = &frame_ctx->src;
int result;
struct wlp_uuid wssid;
- char buf[WLP_WSS_UUID_STRSIZE];
struct sk_buff *resp = NULL;
/* Parse C1 frame */
- d_fnstart(6, dev, "WLP: handle C1 frame. wlp = %p, c1 = %p\n",
- wlp, c1);
mutex_lock(&wss->mutex);
result = wlp_get_wssid(wlp, (void *)c1 + sizeof(*c1), &wssid,
len - sizeof(*c1));
@@ -1807,12 +1664,8 @@
dev_err(dev, "WLP: unable to obtain WSSID from C1 frame.\n");
goto out;
}
- wlp_wss_uuid_print(buf, sizeof(buf), &wssid);
- d_printf(6, dev, "Received C1 frame with WSSID %s \n", buf);
if (!memcmp(&wssid, &wss->wssid, sizeof(wssid))
&& wss->state == WLP_WSS_STATE_ACTIVE) {
- d_printf(6, dev, "WSSID from C1 frame is known locally "
- "and is active\n");
/* Construct C2 frame */
result = wlp_build_assoc_c2(wlp, wss, &resp);
if (result < 0) {
@@ -1820,8 +1673,6 @@
goto out;
}
} else {
- d_printf(6, dev, "WSSID from C1 frame is not known locally "
- "or is not active\n");
/* Construct F0 frame */
result = wlp_build_assoc_f0(wlp, &resp, WLP_ASSOC_ERROR_INV);
if (result < 0) {
@@ -1830,8 +1681,6 @@
}
}
/* Send C2 frame */
- d_printf(6, dev, "Transmitting response (C2/F0) frame to %02x:%02x \n",
- src->data[1], src->data[0]);
BUG_ON(wlp->xmit_frame == NULL);
result = wlp->xmit_frame(wlp, resp, src);
if (result < 0) {
@@ -1846,7 +1695,6 @@
kfree_skb(frame_ctx->skb);
kfree(frame_ctx);
mutex_unlock(&wss->mutex);
- d_fnend(6, dev, "WLP: handle C1 frame. wlp = %p\n", wlp);
}
/**
@@ -1868,27 +1716,20 @@
struct sk_buff *skb = frame_ctx->skb;
struct uwb_dev_addr *src = &frame_ctx->src;
int result;
- char buf[WLP_WSS_UUID_STRSIZE];
struct sk_buff *resp = NULL;
struct wlp_uuid wssid;
u8 tag;
struct uwb_mac_addr virt_addr;
/* Parse C3 frame */
- d_fnstart(6, dev, "WLP: handle C3 frame. wlp = %p, skb = %p\n",
- wlp, skb);
mutex_lock(&wss->mutex);
result = wlp_parse_c3c4_frame(wlp, skb, &wssid, &tag, &virt_addr);
if (result < 0) {
dev_err(dev, "WLP: unable to obtain values from C3 frame.\n");
goto out;
}
- wlp_wss_uuid_print(buf, sizeof(buf), &wssid);
- d_printf(6, dev, "Received C3 frame with WSSID %s \n", buf);
if (!memcmp(&wssid, &wss->wssid, sizeof(wssid))
&& wss->state >= WLP_WSS_STATE_ACTIVE) {
- d_printf(6, dev, "WSSID from C3 frame is known locally "
- "and is active\n");
result = wlp_eda_update_node(&wlp->eda, src, wss,
(void *) virt_addr.data, tag,
WLP_WSS_CONNECTED);
@@ -1913,8 +1754,6 @@
}
}
} else {
- d_printf(6, dev, "WSSID from C3 frame is not known locally "
- "or is not active\n");
/* Construct F0 frame */
result = wlp_build_assoc_f0(wlp, &resp, WLP_ASSOC_ERROR_INV);
if (result < 0) {
@@ -1923,8 +1762,6 @@
}
}
/* Send C4 frame */
- d_printf(6, dev, "Transmitting response (C4/F0) frame to %02x:%02x \n",
- src->data[1], src->data[0]);
BUG_ON(wlp->xmit_frame == NULL);
result = wlp->xmit_frame(wlp, resp, src);
if (result < 0) {
@@ -1939,8 +1776,6 @@
kfree_skb(frame_ctx->skb);
kfree(frame_ctx);
mutex_unlock(&wss->mutex);
- d_fnend(6, dev, "WLP: handle C3 frame. wlp = %p, skb = %p\n",
- wlp, skb);
}
diff --git a/drivers/uwb/wlp/sysfs.c b/drivers/uwb/wlp/sysfs.c
index 1bb9b1f..0370399 100644
--- a/drivers/uwb/wlp/sysfs.c
+++ b/drivers/uwb/wlp/sysfs.c
@@ -23,8 +23,8 @@
* FIXME: Docs
*
*/
-
#include <linux/wlp.h>
+
#include "wlp-internal.h"
static
diff --git a/drivers/uwb/wlp/txrx.c b/drivers/uwb/wlp/txrx.c
index c701bd1..cd20357 100644
--- a/drivers/uwb/wlp/txrx.c
+++ b/drivers/uwb/wlp/txrx.c
@@ -26,12 +26,10 @@
#include <linux/etherdevice.h>
#include <linux/wlp.h>
-#define D_LOCAL 5
-#include <linux/uwb/debug.h>
+
#include "wlp-internal.h"
-
-/**
+/*
* Direct incoming association msg to correct parsing routine
*
* We only expect D1, E1, C1, C3 messages as new. All other incoming
@@ -48,35 +46,31 @@
struct device *dev = &wlp->rc->uwb_dev.dev;
struct wlp_frame_assoc *assoc = (void *) skb->data;
struct wlp_assoc_frame_ctx *frame_ctx;
- d_fnstart(5, dev, "wlp %p, skb %p\n", wlp, skb);
+
frame_ctx = kmalloc(sizeof(*frame_ctx), GFP_ATOMIC);
if (frame_ctx == NULL) {
dev_err(dev, "WLP: Unable to allocate memory for association "
"frame handling.\n");
kfree_skb(skb);
- goto out;
+ return;
}
frame_ctx->wlp = wlp;
frame_ctx->skb = skb;
frame_ctx->src = *src;
switch (assoc->type) {
case WLP_ASSOC_D1:
- d_printf(5, dev, "Received a D1 frame.\n");
INIT_WORK(&frame_ctx->ws, wlp_handle_d1_frame);
schedule_work(&frame_ctx->ws);
break;
case WLP_ASSOC_E1:
- d_printf(5, dev, "Received a E1 frame. FIXME?\n");
kfree_skb(skb); /* Temporary until we handle it */
kfree(frame_ctx); /* Temporary until we handle it */
break;
case WLP_ASSOC_C1:
- d_printf(5, dev, "Received a C1 frame.\n");
INIT_WORK(&frame_ctx->ws, wlp_handle_c1_frame);
schedule_work(&frame_ctx->ws);
break;
case WLP_ASSOC_C3:
- d_printf(5, dev, "Received a C3 frame.\n");
INIT_WORK(&frame_ctx->ws, wlp_handle_c3_frame);
schedule_work(&frame_ctx->ws);
break;
@@ -87,11 +81,9 @@
kfree(frame_ctx);
break;
}
-out:
- d_fnend(5, dev, "wlp %p\n", wlp);
}
-/**
+/*
* Process incoming association frame
*
* Although it could be possible to deal with some incoming association
@@ -112,7 +104,6 @@
struct wlp_frame_assoc *assoc = (void *) skb->data;
struct wlp_session *session = wlp->session;
u8 version;
- d_fnstart(5, dev, "wlp %p, skb %p\n", wlp, skb);
if (wlp_get_version(wlp, &assoc->version, &version,
sizeof(assoc->version)) < 0)
@@ -150,14 +141,12 @@
} else {
wlp_direct_assoc_frame(wlp, skb, src);
}
- d_fnend(5, dev, "wlp %p\n", wlp);
return;
error:
kfree_skb(skb);
- d_fnend(5, dev, "wlp %p\n", wlp);
}
-/**
+/*
* Verify incoming frame is from connected neighbor, prep to pass to WLP client
*
* Verification proceeds according to WLP 0.99 [7.3.1]. The source address
@@ -176,7 +165,6 @@
struct wlp_eda_node eda_entry;
struct wlp_frame_std_abbrv_hdr *hdr = (void *) skb->data;
- d_fnstart(6, dev, "wlp %p, skb %p \n", wlp, skb);
/*verify*/
result = wlp_copy_eda_node(&wlp->eda, src, &eda_entry);
if (result < 0) {
@@ -207,11 +195,10 @@
/*prep*/
skb_pull(skb, sizeof(*hdr));
out:
- d_fnend(6, dev, "wlp %p, skb %p, result = %d \n", wlp, skb, result);
return result;
}
-/**
+/*
* Receive a WLP frame from device
*
* @returns: 1 if calling function should free the skb
@@ -226,14 +213,12 @@
struct wlp_frame_hdr *hdr;
int result = 0;
- d_fnstart(6, dev, "skb (%p), len (%u)\n", skb, len);
if (len < sizeof(*hdr)) {
dev_err(dev, "Not enough data to parse WLP header.\n");
result = -EINVAL;
goto out;
}
hdr = ptr;
- d_dump(6, dev, hdr, sizeof(*hdr));
if (le16_to_cpu(hdr->mux_hdr) != WLP_PROTOCOL_ID) {
dev_err(dev, "Not a WLP frame type.\n");
result = -EINVAL;
@@ -270,7 +255,6 @@
"WLP header.\n");
goto out;
}
- d_printf(5, dev, "Association frame received.\n");
wlp_receive_assoc_frame(wlp, skb, src);
break;
default:
@@ -283,13 +267,12 @@
kfree_skb(skb);
result = 0;
}
- d_fnend(6, dev, "skb (%p)\n", skb);
return result;
}
EXPORT_SYMBOL_GPL(wlp_receive_frame);
-/**
+/*
* Verify frame from network stack, prepare for further transmission
*
* @skb: the socket buffer that needs to be prepared for transmission (it
@@ -343,9 +326,7 @@
int result = -EINVAL;
struct ethhdr *eth_hdr = (void *) skb->data;
- d_fnstart(6, dev, "wlp (%p), skb (%p) \n", wlp, skb);
if (is_broadcast_ether_addr(eth_hdr->h_dest)) {
- d_printf(6, dev, "WLP: handling broadcast frame. \n");
result = wlp_eda_for_each(&wlp->eda, wlp_wss_send_copy, skb);
if (result < 0) {
if (printk_ratelimit())
@@ -357,7 +338,6 @@
result = 1;
/* Frame will be transmitted by WLP. */
} else {
- d_printf(6, dev, "WLP: handling unicast frame. \n");
result = wlp_eda_for_virtual(&wlp->eda, eth_hdr->h_dest, dst,
wlp_wss_prep_hdr, skb);
if (unlikely(result < 0)) {
@@ -368,7 +348,6 @@
}
}
out:
- d_fnend(6, dev, "wlp (%p), skb (%p). result = %d \n", wlp, skb, result);
return result;
}
EXPORT_SYMBOL_GPL(wlp_prepare_tx_frame);
diff --git a/drivers/uwb/wlp/wlp-internal.h b/drivers/uwb/wlp/wlp-internal.h
index 1c94fab..3e8d5de 100644
--- a/drivers/uwb/wlp/wlp-internal.h
+++ b/drivers/uwb/wlp/wlp-internal.h
@@ -42,10 +42,6 @@
extern struct kobj_type wss_ktype;
extern struct attribute_group wss_attr_group;
-extern int uwb_rc_ie_add(struct uwb_rc *, const struct uwb_ie_hdr *, size_t);
-extern int uwb_rc_ie_rm(struct uwb_rc *, enum uwb_ie);
-
-
/* This should be changed to a dynamic array where entries are sorted
* by eth_addr and search is done in a binary form
*
diff --git a/drivers/uwb/wlp/wlp-lc.c b/drivers/uwb/wlp/wlp-lc.c
index 0799402..13db739 100644
--- a/drivers/uwb/wlp/wlp-lc.c
+++ b/drivers/uwb/wlp/wlp-lc.c
@@ -21,12 +21,9 @@
*
* FIXME: docs
*/
-
#include <linux/wlp.h>
-#define D_LOCAL 6
-#include <linux/uwb/debug.h>
-#include "wlp-internal.h"
+#include "wlp-internal.h"
static
void wlp_neighbor_init(struct wlp_neighbor_e *neighbor)
@@ -61,11 +58,6 @@
static
void __wlp_fill_device_info(struct wlp *wlp)
{
- struct device *dev = &wlp->rc->uwb_dev.dev;
-
- BUG_ON(wlp->fill_device_info == NULL);
- d_printf(6, dev, "Retrieving device information "
- "from device driver.\n");
wlp->fill_device_info(wlp, wlp->dev_info);
}
@@ -127,7 +119,7 @@
}
}
-/**
+/*
* Populate WLP neighborhood cache with neighbor information
*
* A new neighbor is found. If it is discoverable then we add it to the
@@ -141,10 +133,7 @@
int discoverable;
struct wlp_neighbor_e *neighbor;
- d_fnstart(6, &dev->dev, "uwb %p \n", dev);
- d_printf(6, &dev->dev, "Found neighbor device %02x:%02x \n",
- dev->dev_addr.data[1], dev->dev_addr.data[0]);
- /**
+ /*
* FIXME:
* Use contents of WLP IE found in beacon cache to determine if
* neighbor is discoverable.
@@ -167,7 +156,6 @@
list_add(&neighbor->node, &wlp->neighbors);
}
error_no_mem:
- d_fnend(6, &dev->dev, "uwb %p, result = %d \n", dev, result);
return result;
}
@@ -255,8 +243,6 @@
dev_err(dev, "Unable to send D1 frame to neighbor "
"%02x:%02x (%d)\n", dev_addr->data[1],
dev_addr->data[0], result);
- d_printf(6, dev, "Add placeholders into buffer next to "
- "neighbor information we have (dev address).\n");
goto out;
}
/* Create session, wait for response */
@@ -284,8 +270,6 @@
/* Parse message in session->data: it will be either D2 or F0 */
skb = session.data;
resp = (void *) skb->data;
- d_printf(6, dev, "Received response to D1 frame. \n");
- d_dump(6, dev, skb->data, skb->len > 72 ? 72 : skb->len);
if (resp->type == WLP_ASSOC_F0) {
result = wlp_parse_f0(wlp, skb);
@@ -337,10 +321,9 @@
struct device *dev = &wlp->rc->uwb_dev.dev;
char buf[WLP_WSS_UUID_STRSIZE];
struct uwb_dev_addr *dev_addr = &neighbor->uwb_dev->dev_addr;
+
wlp_wss_uuid_print(buf, sizeof(buf), wssid);
- d_fnstart(6, dev, "wlp %p, neighbor %p, wss %p, wssid %p (%s)\n",
- wlp, neighbor, wss, wssid, buf);
- d_printf(6, dev, "Complete me.\n");
+
result = wlp_d1d2_exchange(wlp, neighbor, wss, wssid);
if (result < 0) {
dev_err(dev, "WLP: D1/D2 message exchange for enrollment "
@@ -360,13 +343,10 @@
goto error;
} else {
wss->state = WLP_WSS_STATE_ENROLLED;
- d_printf(2, dev, "WLP: Success Enrollment into unsecure WSS "
- "%s using neighbor %02x:%02x. \n", buf,
- dev_addr->data[1], dev_addr->data[0]);
+ dev_dbg(dev, "WLP: Success Enrollment into unsecure WSS "
+ "%s using neighbor %02x:%02x. \n",
+ buf, dev_addr->data[1], dev_addr->data[0]);
}
-
- d_fnend(6, dev, "wlp %p, neighbor %p, wss %p, wssid %p (%s)\n",
- wlp, neighbor, wss, wssid, buf);
out:
return result;
error:
@@ -449,7 +429,6 @@
int result = 0;
struct device *dev = &wlp->rc->uwb_dev.dev;
- d_fnstart(6, dev, "wlp %p \n", wlp);
mutex_lock(&wlp->nbmutex);
/* Clear current neighborhood cache. */
__wlp_neighbors_release(wlp);
@@ -469,7 +448,6 @@
}
error_dev_for_each:
mutex_unlock(&wlp->nbmutex);
- d_fnend(6, dev, "wlp %p \n", wlp);
return result;
}
@@ -492,9 +470,6 @@
int result;
switch (event) {
case UWB_NOTIF_ONAIR:
- d_printf(6, dev, "UWB device %02x:%02x is onair\n",
- uwb_dev->dev_addr.data[1],
- uwb_dev->dev_addr.data[0]);
result = wlp_eda_create_node(&wlp->eda,
uwb_dev->mac_addr.data,
&uwb_dev->dev_addr);
@@ -505,18 +480,11 @@
uwb_dev->dev_addr.data[0]);
break;
case UWB_NOTIF_OFFAIR:
- d_printf(6, dev, "UWB device %02x:%02x is offair\n",
- uwb_dev->dev_addr.data[1],
- uwb_dev->dev_addr.data[0]);
wlp_eda_rm_node(&wlp->eda, &uwb_dev->dev_addr);
mutex_lock(&wlp->nbmutex);
- list_for_each_entry_safe(neighbor, next, &wlp->neighbors,
- node) {
- if (neighbor->uwb_dev == uwb_dev) {
- d_printf(6, dev, "Removing device from "
- "neighborhood.\n");
+ list_for_each_entry_safe(neighbor, next, &wlp->neighbors, node) {
+ if (neighbor->uwb_dev == uwb_dev)
__wlp_neighbor_release(neighbor);
- }
}
mutex_unlock(&wlp->nbmutex);
break;
@@ -526,38 +494,47 @@
}
}
-int wlp_setup(struct wlp *wlp, struct uwb_rc *rc)
+static void wlp_channel_changed(struct uwb_pal *pal, int channel)
{
- struct device *dev = &rc->uwb_dev.dev;
+ struct wlp *wlp = container_of(pal, struct wlp, pal);
+
+ if (channel < 0)
+ netif_carrier_off(wlp->ndev);
+ else
+ netif_carrier_on(wlp->ndev);
+}
+
+int wlp_setup(struct wlp *wlp, struct uwb_rc *rc, struct net_device *ndev)
+{
int result;
- d_fnstart(6, dev, "wlp %p\n", wlp);
BUG_ON(wlp->fill_device_info == NULL);
BUG_ON(wlp->xmit_frame == NULL);
BUG_ON(wlp->stop_queue == NULL);
BUG_ON(wlp->start_queue == NULL);
+
wlp->rc = rc;
+ wlp->ndev = ndev;
wlp_eda_init(&wlp->eda);/* Set up address cache */
wlp->uwb_notifs_handler.cb = wlp_uwb_notifs_cb;
wlp->uwb_notifs_handler.data = wlp;
uwb_notifs_register(rc, &wlp->uwb_notifs_handler);
uwb_pal_init(&wlp->pal);
- result = uwb_pal_register(rc, &wlp->pal);
+ wlp->pal.rc = rc;
+ wlp->pal.channel_changed = wlp_channel_changed;
+ result = uwb_pal_register(&wlp->pal);
if (result < 0)
uwb_notifs_deregister(wlp->rc, &wlp->uwb_notifs_handler);
- d_fnend(6, dev, "wlp %p, result = %d\n", wlp, result);
return result;
}
EXPORT_SYMBOL_GPL(wlp_setup);
void wlp_remove(struct wlp *wlp)
{
- struct device *dev = &wlp->rc->uwb_dev.dev;
- d_fnstart(6, dev, "wlp %p\n", wlp);
wlp_neighbors_release(wlp);
- uwb_pal_unregister(wlp->rc, &wlp->pal);
+ uwb_pal_unregister(&wlp->pal);
uwb_notifs_deregister(wlp->rc, &wlp->uwb_notifs_handler);
wlp_eda_release(&wlp->eda);
mutex_lock(&wlp->mutex);
@@ -565,9 +542,6 @@
kfree(wlp->dev_info);
mutex_unlock(&wlp->mutex);
wlp->rc = NULL;
- /* We have to use NULL here because this function can be called
- * when the device disappeared. */
- d_fnend(6, NULL, "wlp %p\n", wlp);
}
EXPORT_SYMBOL_GPL(wlp_remove);
diff --git a/drivers/uwb/wlp/wss-lc.c b/drivers/uwb/wlp/wss-lc.c
index 96b18c9..5913c7a 100644
--- a/drivers/uwb/wlp/wss-lc.c
+++ b/drivers/uwb/wlp/wss-lc.c
@@ -43,14 +43,11 @@
* wlp_wss_release()
* wlp_wss_reset()
*/
-
#include <linux/etherdevice.h> /* for is_valid_ether_addr */
#include <linux/skbuff.h>
#include <linux/wlp.h>
-#define D_LOCAL 5
-#include <linux/uwb/debug.h>
-#include "wlp-internal.h"
+#include "wlp-internal.h"
size_t wlp_wss_key_print(char *buf, size_t bufsize, u8 *key)
{
@@ -116,9 +113,6 @@
*/
void wlp_wss_reset(struct wlp_wss *wss)
{
- struct wlp *wlp = container_of(wss, struct wlp, wss);
- struct device *dev = &wlp->rc->uwb_dev.dev;
- d_fnstart(5, dev, "wss (%p) \n", wss);
memset(&wss->wssid, 0, sizeof(wss->wssid));
wss->hash = 0;
memset(&wss->name[0], 0, sizeof(wss->name));
@@ -127,7 +121,6 @@
memset(&wss->master_key[0], 0, sizeof(wss->master_key));
wss->tag = 0;
wss->state = WLP_WSS_STATE_NONE;
- d_fnend(5, dev, "wss (%p) \n", wss);
}
/**
@@ -145,7 +138,6 @@
struct device *dev = &wlp->rc->uwb_dev.dev;
int result;
- d_fnstart(5, dev, "wss (%p), wssid: %s\n", wss, wssid_str);
result = kobject_set_name(&wss->kobj, "wss-%s", wssid_str);
if (result < 0)
return result;
@@ -162,7 +154,6 @@
result);
goto error_sysfs_create_group;
}
- d_fnend(5, dev, "Completed. result = %d \n", result);
return 0;
error_sysfs_create_group:
@@ -214,22 +205,14 @@
struct wlp *wlp = container_of(wss, struct wlp, wss);
struct device *dev = &wlp->rc->uwb_dev.dev;
struct wlp_neighbor_e *neighbor;
- char buf[WLP_WSS_UUID_STRSIZE];
int result = -ENXIO;
struct uwb_dev_addr *dev_addr;
- wlp_wss_uuid_print(buf, sizeof(buf), wssid);
- d_fnstart(5, dev, "wss %p, wssid %s, registrar %02x:%02x \n",
- wss, buf, dest->data[1], dest->data[0]);
mutex_lock(&wlp->nbmutex);
list_for_each_entry(neighbor, &wlp->neighbors, node) {
dev_addr = &neighbor->uwb_dev->dev_addr;
if (!memcmp(dest, dev_addr, sizeof(*dest))) {
- d_printf(5, dev, "Neighbor %02x:%02x is valid, "
- "enrolling. \n",
- dev_addr->data[1], dev_addr->data[0]);
- result = wlp_enroll_neighbor(wlp, neighbor, wss,
- wssid);
+ result = wlp_enroll_neighbor(wlp, neighbor, wss, wssid);
break;
}
}
@@ -237,8 +220,6 @@
dev_err(dev, "WLP: Cannot find neighbor %02x:%02x. \n",
dest->data[1], dest->data[0]);
mutex_unlock(&wlp->nbmutex);
- d_fnend(5, dev, "wss %p, wssid %s, registrar %02x:%02x, result %d \n",
- wss, buf, dest->data[1], dest->data[0], result);
return result;
}
@@ -260,16 +241,11 @@
char buf[WLP_WSS_UUID_STRSIZE];
int result = -ENXIO;
- wlp_wss_uuid_print(buf, sizeof(buf), wssid);
- d_fnstart(5, dev, "wss %p, wssid %s \n", wss, buf);
+
mutex_lock(&wlp->nbmutex);
list_for_each_entry(neighbor, &wlp->neighbors, node) {
list_for_each_entry(wssid_e, &neighbor->wssid, node) {
if (!memcmp(wssid, &wssid_e->wssid, sizeof(*wssid))) {
- d_printf(5, dev, "Found WSSID %s in neighbor "
- "%02x:%02x cache. \n", buf,
- neighbor->uwb_dev->dev_addr.data[1],
- neighbor->uwb_dev->dev_addr.data[0]);
result = wlp_enroll_neighbor(wlp, neighbor,
wss, wssid);
if (result == 0) /* enrollment success */
@@ -279,10 +255,11 @@
}
}
out:
- if (result == -ENXIO)
+ if (result == -ENXIO) {
+ wlp_wss_uuid_print(buf, sizeof(buf), wssid);
dev_err(dev, "WLP: Cannot find WSSID %s in cache. \n", buf);
+ }
mutex_unlock(&wlp->nbmutex);
- d_fnend(5, dev, "wss %p, wssid %s, result %d \n", wss, buf, result);
return result;
}
@@ -307,27 +284,22 @@
struct uwb_dev_addr bcast = {.data = {0xff, 0xff} };
wlp_wss_uuid_print(buf, sizeof(buf), wssid);
+
if (wss->state != WLP_WSS_STATE_NONE) {
dev_err(dev, "WLP: Already enrolled in WSS %s.\n", buf);
result = -EEXIST;
goto error;
}
- if (!memcmp(&bcast, devaddr, sizeof(bcast))) {
- d_printf(5, dev, "Request to enroll in discovered WSS "
- "with WSSID %s \n", buf);
+ if (!memcmp(&bcast, devaddr, sizeof(bcast)))
result = wlp_wss_enroll_discovered(wss, wssid);
- } else {
- d_printf(5, dev, "Request to enroll in WSSID %s with "
- "registrar %02x:%02x\n", buf, devaddr->data[1],
- devaddr->data[0]);
+ else
result = wlp_wss_enroll_target(wss, wssid, devaddr);
- }
if (result < 0) {
dev_err(dev, "WLP: Unable to enroll into WSS %s, result %d \n",
buf, result);
goto error;
}
- d_printf(2, dev, "Successfully enrolled into WSS %s \n", buf);
+ dev_dbg(dev, "Successfully enrolled into WSS %s \n", buf);
result = wlp_wss_sysfs_add(wss, buf);
if (result < 0) {
dev_err(dev, "WLP: Unable to set up sysfs for WSS kobject.\n");
@@ -363,7 +335,6 @@
u8 hash; /* only include one hash */
} ie_data;
- d_fnstart(5, dev, "Activating WSS %p. \n", wss);
BUG_ON(wss->state != WLP_WSS_STATE_ENROLLED);
wss->hash = wlp_wss_comp_wssid_hash(&wss->wssid);
wss->tag = wss->hash;
@@ -382,7 +353,6 @@
wss->state = WLP_WSS_STATE_ACTIVE;
result = 0;
error_wlp_ie:
- d_fnend(5, dev, "Activating WSS %p, result = %d \n", wss, result);
return result;
}
@@ -405,7 +375,6 @@
int result = 0;
char buf[WLP_WSS_UUID_STRSIZE];
- d_fnstart(5, dev, "Enrollment and activation requested. \n");
mutex_lock(&wss->mutex);
result = wlp_wss_enroll(wss, wssid, devaddr);
if (result < 0) {
@@ -424,7 +393,6 @@
error_activate:
error_enroll:
mutex_unlock(&wss->mutex);
- d_fnend(5, dev, "Completed. result = %d \n", result);
return result;
}
@@ -447,11 +415,9 @@
struct device *dev = &wlp->rc->uwb_dev.dev;
int result = 0;
char buf[WLP_WSS_UUID_STRSIZE];
- d_fnstart(5, dev, "Request to create new WSS.\n");
+
result = wlp_wss_uuid_print(buf, sizeof(buf), wssid);
- d_printf(5, dev, "Request to create WSS: WSSID=%s, name=%s, "
- "sec_status=%u, accepting enrollment=%u \n",
- buf, name, sec_status, accept);
+
if (!mutex_trylock(&wss->mutex)) {
dev_err(dev, "WLP: WLP association session in progress.\n");
return -EBUSY;
@@ -498,7 +464,6 @@
result = 0;
out:
mutex_unlock(&wss->mutex);
- d_fnend(5, dev, "Completed. result = %d \n", result);
return result;
}
@@ -520,16 +485,12 @@
{
int result = 0;
struct device *dev = &wlp->rc->uwb_dev.dev;
- char buf[WLP_WSS_UUID_STRSIZE];
DECLARE_COMPLETION_ONSTACK(completion);
struct wlp_session session;
struct sk_buff *skb;
struct wlp_frame_assoc *resp;
struct wlp_uuid wssid;
- wlp_wss_uuid_print(buf, sizeof(buf), &wss->wssid);
- d_fnstart(5, dev, "wlp %p, wss %p (wssid %s), neighbor %02x:%02x \n",
- wlp, wss, buf, dev_addr->data[1], dev_addr->data[0]);
mutex_lock(&wlp->mutex);
/* Send C1 association frame */
result = wlp_send_assoc_frame(wlp, wss, dev_addr, WLP_ASSOC_C1);
@@ -565,8 +526,6 @@
/* Parse message in session->data: it will be either C2 or F0 */
skb = session.data;
resp = (void *) skb->data;
- d_printf(5, dev, "Received response to C1 frame. \n");
- d_dump(5, dev, skb->data, skb->len > 72 ? 72 : skb->len);
if (resp->type == WLP_ASSOC_F0) {
result = wlp_parse_f0(wlp, skb);
if (result < 0)
@@ -584,11 +543,9 @@
result = 0;
goto error_resp_parse;
}
- if (!memcmp(&wssid, &wss->wssid, sizeof(wssid))) {
- d_printf(5, dev, "WSSID in C2 frame matches local "
- "active WSS.\n");
+ if (!memcmp(&wssid, &wss->wssid, sizeof(wssid)))
result = 1;
- } else {
+ else {
dev_err(dev, "WLP: Received a C2 frame without matching "
"WSSID.\n");
result = 0;
@@ -598,8 +555,6 @@
out:
wlp->session = NULL;
mutex_unlock(&wlp->mutex);
- d_fnend(5, dev, "wlp %p, wss %p (wssid %s), neighbor %02x:%02x \n",
- wlp, wss, buf, dev_addr->data[1], dev_addr->data[0]);
return result;
}
@@ -620,16 +575,8 @@
{
struct device *dev = &wlp->rc->uwb_dev.dev;
int result = 0;
- char buf[WLP_WSS_UUID_STRSIZE];
- wlp_wss_uuid_print(buf, sizeof(buf), wssid);
- d_fnstart(5, dev, "wlp %p, wss %p, wssid %s, tag %u, virtual "
- "%02x:%02x:%02x:%02x:%02x:%02x \n", wlp, wss, buf, *tag,
- virt_addr->data[0], virt_addr->data[1], virt_addr->data[2],
- virt_addr->data[3], virt_addr->data[4], virt_addr->data[5]);
if (!memcmp(wssid, &wss->wssid, sizeof(*wssid))) {
- d_printf(5, dev, "WSSID from neighbor frame matches local "
- "active WSS.\n");
/* Update EDA cache */
result = wlp_eda_update_node(&wlp->eda, dev_addr, wss,
(void *) virt_addr->data, *tag,
@@ -638,18 +585,9 @@
dev_err(dev, "WLP: Unable to update EDA cache "
"with new connected neighbor information.\n");
} else {
- dev_err(dev, "WLP: Neighbor does not have matching "
- "WSSID.\n");
+ dev_err(dev, "WLP: Neighbor does not have matching WSSID.\n");
result = -EINVAL;
}
-
- d_fnend(5, dev, "wlp %p, wss %p, wssid %s, tag %u, virtual "
- "%02x:%02x:%02x:%02x:%02x:%02x, result = %d \n",
- wlp, wss, buf, *tag,
- virt_addr->data[0], virt_addr->data[1], virt_addr->data[2],
- virt_addr->data[3], virt_addr->data[4], virt_addr->data[5],
- result);
-
return result;
}
@@ -665,7 +603,6 @@
{
int result;
struct device *dev = &wlp->rc->uwb_dev.dev;
- char buf[WLP_WSS_UUID_STRSIZE];
struct wlp_uuid wssid;
u8 tag;
struct uwb_mac_addr virt_addr;
@@ -674,9 +611,6 @@
struct wlp_frame_assoc *resp;
struct sk_buff *skb;
- wlp_wss_uuid_print(buf, sizeof(buf), &wss->wssid);
- d_fnstart(5, dev, "wlp %p, wss %p (wssid %s), neighbor %02x:%02x \n",
- wlp, wss, buf, dev_addr->data[1], dev_addr->data[0]);
mutex_lock(&wlp->mutex);
/* Send C3 association frame */
result = wlp_send_assoc_frame(wlp, wss, dev_addr, WLP_ASSOC_C3);
@@ -711,8 +645,6 @@
/* Parse message in session->data: it will be either C4 or F0 */
skb = session.data;
resp = (void *) skb->data;
- d_printf(5, dev, "Received response to C3 frame. \n");
- d_dump(5, dev, skb->data, skb->len > 72 ? 72 : skb->len);
if (resp->type == WLP_ASSOC_F0) {
result = wlp_parse_f0(wlp, skb);
if (result < 0)
@@ -744,8 +676,6 @@
WLP_WSS_CONNECT_FAILED);
wlp->session = NULL;
mutex_unlock(&wlp->mutex);
- d_fnend(5, dev, "wlp %p, wss %p (wssid %s), neighbor %02x:%02x \n",
- wlp, wss, buf, dev_addr->data[1], dev_addr->data[0]);
return result;
}
@@ -780,12 +710,8 @@
struct wlp_wss *wss = &wlp->wss;
int result;
struct device *dev = &wlp->rc->uwb_dev.dev;
- char buf[WLP_WSS_UUID_STRSIZE];
mutex_lock(&wss->mutex);
- wlp_wss_uuid_print(buf, sizeof(buf), &wss->wssid);
- d_fnstart(5, dev, "wlp %p, wss %p (wssid %s), neighbor %02x:%02x \n",
- wlp, wss, buf, dev_addr->data[1], dev_addr->data[0]);
if (wss->state < WLP_WSS_STATE_ACTIVE) {
if (printk_ratelimit())
dev_err(dev, "WLP: Attempting to connect with "
@@ -836,7 +762,6 @@
BUG_ON(wlp->start_queue == NULL);
wlp->start_queue(wlp);
mutex_unlock(&wss->mutex);
- d_fnend(5, dev, "wlp %p, wss %p (wssid %s)\n", wlp, wss, buf);
}
/**
@@ -855,7 +780,6 @@
struct sk_buff *skb = _skb;
struct wlp_frame_std_abbrv_hdr *std_hdr;
- d_fnstart(6, dev, "wlp %p \n", wlp);
if (eda_entry->state == WLP_WSS_CONNECTED) {
/* Add WLP header */
BUG_ON(skb_headroom(skb) < sizeof(*std_hdr));
@@ -873,7 +797,6 @@
dev_addr->data[0]);
result = -EINVAL;
}
- d_fnend(6, dev, "wlp %p \n", wlp);
return result;
}
@@ -893,16 +816,9 @@
{
int result = 0;
struct device *dev = &wlp->rc->uwb_dev.dev;
- struct uwb_dev_addr *dev_addr = &eda_entry->dev_addr;
- unsigned char *eth_addr = eda_entry->eth_addr;
struct sk_buff *skb = _skb;
struct wlp_assoc_conn_ctx *conn_ctx;
- d_fnstart(5, dev, "wlp %p\n", wlp);
- d_printf(5, dev, "To neighbor %02x:%02x with eth "
- "%02x:%02x:%02x:%02x:%02x:%02x\n", dev_addr->data[1],
- dev_addr->data[0], eth_addr[0], eth_addr[1], eth_addr[2],
- eth_addr[3], eth_addr[4], eth_addr[5]);
if (eda_entry->state == WLP_WSS_UNCONNECTED) {
/* We don't want any more packets while we set up connection */
BUG_ON(wlp->stop_queue == NULL);
@@ -929,12 +845,9 @@
"previously. Not retrying. \n");
result = -ENONET;
goto out;
- } else { /* eda_entry->state == WLP_WSS_CONNECTED */
- d_printf(5, dev, "Neighbor is connected, preparing frame.\n");
+ } else /* eda_entry->state == WLP_WSS_CONNECTED */
result = wlp_wss_prep_hdr(wlp, eda_entry, skb);
- }
out:
- d_fnend(5, dev, "wlp %p, result = %d \n", wlp, result);
return result;
}
@@ -957,8 +870,6 @@
struct sk_buff *copy;
struct uwb_dev_addr *dev_addr = &eda_entry->dev_addr;
- d_fnstart(5, dev, "to neighbor %02x:%02x, skb (%p) \n",
- dev_addr->data[1], dev_addr->data[0], skb);
copy = skb_copy(skb, GFP_ATOMIC);
if (copy == NULL) {
if (printk_ratelimit())
@@ -988,8 +899,6 @@
dev_kfree_skb_irq(copy);/*we need to free if tx fails */
}
out:
- d_fnend(5, dev, "to neighbor %02x:%02x \n", dev_addr->data[1],
- dev_addr->data[0]);
return result;
}
@@ -1005,7 +914,7 @@
struct wlp *wlp = container_of(wss, struct wlp, wss);
struct device *dev = &wlp->rc->uwb_dev.dev;
int result = 0;
- d_fnstart(5, dev, "wss (%p) \n", wss);
+
mutex_lock(&wss->mutex);
wss->kobj.parent = &net_dev->dev.kobj;
if (!is_valid_ether_addr(net_dev->dev_addr)) {
@@ -1018,7 +927,6 @@
sizeof(wss->virtual_addr.data));
out:
mutex_unlock(&wss->mutex);
- d_fnend(5, dev, "wss (%p) \n", wss);
return result;
}
EXPORT_SYMBOL_GPL(wlp_wss_setup);
@@ -1035,8 +943,7 @@
void wlp_wss_remove(struct wlp_wss *wss)
{
struct wlp *wlp = container_of(wss, struct wlp, wss);
- struct device *dev = &wlp->rc->uwb_dev.dev;
- d_fnstart(5, dev, "wss (%p) \n", wss);
+
mutex_lock(&wss->mutex);
if (wss->state == WLP_WSS_STATE_ACTIVE)
uwb_rc_ie_rm(wlp->rc, UWB_IE_WLP);
@@ -1050,6 +957,5 @@
wlp_eda_release(&wlp->eda);
wlp_eda_init(&wlp->eda);
mutex_unlock(&wss->mutex);
- d_fnend(5, dev, "wss (%p) \n", wss);
}
EXPORT_SYMBOL_GPL(wlp_wss_remove);
diff --git a/fs/devpts/inode.c b/fs/devpts/inode.c
index 5d61b7c..fff96e1 100644
--- a/fs/devpts/inode.c
+++ b/fs/devpts/inode.c
@@ -27,25 +27,32 @@
#define DEVPTS_SUPER_MAGIC 0x1cd1
#define DEVPTS_DEFAULT_MODE 0600
+/*
+ * ptmx is a new node in /dev/pts and will be unused in legacy (single-
+ * instance) mode. To prevent surprises in user space, set permissions of
+ * ptmx to 0. Use 'chmod' or remount with '-o ptmxmode' to set meaningful
+ * permissions.
+ */
+#define DEVPTS_DEFAULT_PTMX_MODE 0000
#define PTMX_MINOR 2
extern int pty_limit; /* Config limit on Unix98 ptys */
-static DEFINE_IDA(allocated_ptys);
static DEFINE_MUTEX(allocated_ptys_lock);
static struct vfsmount *devpts_mnt;
-static struct dentry *devpts_root;
-static struct {
+struct pts_mount_opts {
int setuid;
int setgid;
uid_t uid;
gid_t gid;
umode_t mode;
-} config = {.mode = DEVPTS_DEFAULT_MODE};
+ umode_t ptmxmode;
+ int newinstance;
+};
enum {
- Opt_uid, Opt_gid, Opt_mode,
+ Opt_uid, Opt_gid, Opt_mode, Opt_ptmxmode, Opt_newinstance,
Opt_err
};
@@ -53,18 +60,50 @@
{Opt_uid, "uid=%u"},
{Opt_gid, "gid=%u"},
{Opt_mode, "mode=%o"},
+#ifdef CONFIG_DEVPTS_MULTIPLE_INSTANCES
+ {Opt_ptmxmode, "ptmxmode=%o"},
+ {Opt_newinstance, "newinstance"},
+#endif
{Opt_err, NULL}
};
-static int devpts_remount(struct super_block *sb, int *flags, char *data)
+struct pts_fs_info {
+ struct ida allocated_ptys;
+ struct pts_mount_opts mount_opts;
+ struct dentry *ptmx_dentry;
+};
+
+static inline struct pts_fs_info *DEVPTS_SB(struct super_block *sb)
+{
+ return sb->s_fs_info;
+}
+
+static inline struct super_block *pts_sb_from_inode(struct inode *inode)
+{
+#ifdef CONFIG_DEVPTS_MULTIPLE_INSTANCES
+ if (inode->i_sb->s_magic == DEVPTS_SUPER_MAGIC)
+ return inode->i_sb;
+#endif
+ return devpts_mnt->mnt_sb;
+}
+
+#define PARSE_MOUNT 0
+#define PARSE_REMOUNT 1
+
+static int parse_mount_options(char *data, int op, struct pts_mount_opts *opts)
{
char *p;
- config.setuid = 0;
- config.setgid = 0;
- config.uid = 0;
- config.gid = 0;
- config.mode = DEVPTS_DEFAULT_MODE;
+ opts->setuid = 0;
+ opts->setgid = 0;
+ opts->uid = 0;
+ opts->gid = 0;
+ opts->mode = DEVPTS_DEFAULT_MODE;
+ opts->ptmxmode = DEVPTS_DEFAULT_PTMX_MODE;
+
+ /* newinstance makes sense only on initial mount */
+ if (op == PARSE_MOUNT)
+ opts->newinstance = 0;
while ((p = strsep(&data, ",")) != NULL) {
substring_t args[MAX_OPT_ARGS];
@@ -79,20 +118,32 @@
case Opt_uid:
if (match_int(&args[0], &option))
return -EINVAL;
- config.uid = option;
- config.setuid = 1;
+ opts->uid = option;
+ opts->setuid = 1;
break;
case Opt_gid:
if (match_int(&args[0], &option))
return -EINVAL;
- config.gid = option;
- config.setgid = 1;
+ opts->gid = option;
+ opts->setgid = 1;
break;
case Opt_mode:
if (match_octal(&args[0], &option))
return -EINVAL;
- config.mode = option & S_IALLUGO;
+ opts->mode = option & S_IALLUGO;
break;
+#ifdef CONFIG_DEVPTS_MULTIPLE_INSTANCES
+ case Opt_ptmxmode:
+ if (match_octal(&args[0], &option))
+ return -EINVAL;
+ opts->ptmxmode = option & S_IALLUGO;
+ break;
+ case Opt_newinstance:
+ /* newinstance makes sense only on initial mount */
+ if (op == PARSE_MOUNT)
+ opts->newinstance = 1;
+ break;
+#endif
default:
printk(KERN_ERR "devpts: called with bogus options\n");
return -EINVAL;
@@ -102,13 +153,108 @@
return 0;
}
+#ifdef CONFIG_DEVPTS_MULTIPLE_INSTANCES
+static int mknod_ptmx(struct super_block *sb)
+{
+ int mode;
+ int rc = -ENOMEM;
+ struct dentry *dentry;
+ struct inode *inode;
+ struct dentry *root = sb->s_root;
+ struct pts_fs_info *fsi = DEVPTS_SB(sb);
+ struct pts_mount_opts *opts = &fsi->mount_opts;
+
+ mutex_lock(&root->d_inode->i_mutex);
+
+ /* If we have already created ptmx node, return */
+ if (fsi->ptmx_dentry) {
+ rc = 0;
+ goto out;
+ }
+
+ dentry = d_alloc_name(root, "ptmx");
+ if (!dentry) {
+ printk(KERN_NOTICE "Unable to alloc dentry for ptmx node\n");
+ goto out;
+ }
+
+ /*
+ * Create a new 'ptmx' node in this mount of devpts.
+ */
+ inode = new_inode(sb);
+ if (!inode) {
+ printk(KERN_ERR "Unable to alloc inode for ptmx node\n");
+ dput(dentry);
+ goto out;
+ }
+
+ inode->i_ino = 2;
+ inode->i_uid = inode->i_gid = 0;
+ inode->i_blocks = 0;
+ inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
+
+ mode = S_IFCHR|opts->ptmxmode;
+ init_special_inode(inode, mode, MKDEV(TTYAUX_MAJOR, 2));
+
+ d_add(dentry, inode);
+
+ fsi->ptmx_dentry = dentry;
+ rc = 0;
+
+ printk(KERN_DEBUG "Created ptmx node in devpts ino %lu\n",
+ inode->i_ino);
+out:
+ mutex_unlock(&root->d_inode->i_mutex);
+ return rc;
+}
+
+static void update_ptmx_mode(struct pts_fs_info *fsi)
+{
+ struct inode *inode;
+ if (fsi->ptmx_dentry) {
+ inode = fsi->ptmx_dentry->d_inode;
+ inode->i_mode = S_IFCHR|fsi->mount_opts.ptmxmode;
+ }
+}
+#else
+static inline void update_ptmx_mode(struct pts_fs_info *fsi)
+{
+ return;
+}
+#endif
+
+static int devpts_remount(struct super_block *sb, int *flags, char *data)
+{
+ int err;
+ struct pts_fs_info *fsi = DEVPTS_SB(sb);
+ struct pts_mount_opts *opts = &fsi->mount_opts;
+
+ err = parse_mount_options(data, PARSE_REMOUNT, opts);
+
+ /*
+ * parse_mount_options() restores options to default values
+ * before parsing and may have changed ptmxmode. So, update the
+ * mode in the inode too. Bogus options don't fail the remount,
+ * so do this even on error return.
+ */
+ update_ptmx_mode(fsi);
+
+ return err;
+}
+
static int devpts_show_options(struct seq_file *seq, struct vfsmount *vfs)
{
- if (config.setuid)
- seq_printf(seq, ",uid=%u", config.uid);
- if (config.setgid)
- seq_printf(seq, ",gid=%u", config.gid);
- seq_printf(seq, ",mode=%03o", config.mode);
+ struct pts_fs_info *fsi = DEVPTS_SB(vfs->mnt_sb);
+ struct pts_mount_opts *opts = &fsi->mount_opts;
+
+ if (opts->setuid)
+ seq_printf(seq, ",uid=%u", opts->uid);
+ if (opts->setgid)
+ seq_printf(seq, ",gid=%u", opts->gid);
+ seq_printf(seq, ",mode=%03o", opts->mode);
+#ifdef CONFIG_DEVPTS_MULTIPLE_INSTANCES
+ seq_printf(seq, ",ptmxmode=%03o", opts->ptmxmode);
+#endif
return 0;
}
@@ -119,10 +265,25 @@
.show_options = devpts_show_options,
};
+static void *new_pts_fs_info(void)
+{
+ struct pts_fs_info *fsi;
+
+ fsi = kzalloc(sizeof(struct pts_fs_info), GFP_KERNEL);
+ if (!fsi)
+ return NULL;
+
+ ida_init(&fsi->allocated_ptys);
+ fsi->mount_opts.mode = DEVPTS_DEFAULT_MODE;
+ fsi->mount_opts.ptmxmode = DEVPTS_DEFAULT_PTMX_MODE;
+
+ return fsi;
+}
+
static int
devpts_fill_super(struct super_block *s, void *data, int silent)
{
- struct inode * inode;
+ struct inode *inode;
s->s_blocksize = 1024;
s->s_blocksize_bits = 10;
@@ -130,9 +291,13 @@
s->s_op = &devpts_sops;
s->s_time_gran = 1;
+ s->s_fs_info = new_pts_fs_info();
+ if (!s->s_fs_info)
+ goto fail;
+
inode = new_inode(s);
if (!inode)
- goto fail;
+ goto free_fsi;
inode->i_ino = 1;
inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
inode->i_blocks = 0;
@@ -142,27 +307,226 @@
inode->i_fop = &simple_dir_operations;
inode->i_nlink = 2;
- devpts_root = s->s_root = d_alloc_root(inode);
+ s->s_root = d_alloc_root(inode);
if (s->s_root)
return 0;
-
- printk("devpts: get root dentry failed\n");
+
+ printk(KERN_ERR "devpts: get root dentry failed\n");
iput(inode);
+
+free_fsi:
+ kfree(s->s_fs_info);
fail:
return -ENOMEM;
}
+#ifdef CONFIG_DEVPTS_MULTIPLE_INSTANCES
+static int compare_init_pts_sb(struct super_block *s, void *p)
+{
+ if (devpts_mnt)
+ return devpts_mnt->mnt_sb == s;
+ return 0;
+}
+
+/*
+ * Safely parse the mount options in @data and update @opts.
+ *
+ * devpts ends up parsing options two times during mount, due to the
+ * two modes of operation it supports. The first parse occurs in
+ * devpts_get_sb() when determining the mode (single-instance or
+ * multi-instance mode). The second parse happens in devpts_remount()
+ * or new_pts_mount() depending on the mode.
+ *
+ * Parsing of options modifies the @data making subsequent parsing
+ * incorrect. So make a local copy of @data and parse it.
+ *
+ * Return: 0 On success, -errno on error
+ */
+static int safe_parse_mount_options(void *data, struct pts_mount_opts *opts)
+{
+ int rc;
+ void *datacp;
+
+ if (!data)
+ return 0;
+
+ /* Use kstrdup() ? */
+ datacp = kmalloc(PAGE_SIZE, GFP_KERNEL);
+ if (!datacp)
+ return -ENOMEM;
+
+ memcpy(datacp, data, PAGE_SIZE);
+ rc = parse_mount_options((char *)datacp, PARSE_MOUNT, opts);
+ kfree(datacp);
+
+ return rc;
+}
+
+/*
+ * Mount a new (private) instance of devpts. PTYs created in this
+ * instance are independent of the PTYs in other devpts instances.
+ */
+static int new_pts_mount(struct file_system_type *fs_type, int flags,
+ void *data, struct vfsmount *mnt)
+{
+ int err;
+ struct pts_fs_info *fsi;
+ struct pts_mount_opts *opts;
+
+ printk(KERN_NOTICE "devpts: newinstance mount\n");
+
+ err = get_sb_nodev(fs_type, flags, data, devpts_fill_super, mnt);
+ if (err)
+ return err;
+
+ fsi = DEVPTS_SB(mnt->mnt_sb);
+ opts = &fsi->mount_opts;
+
+ err = parse_mount_options(data, PARSE_MOUNT, opts);
+ if (err)
+ goto fail;
+
+ err = mknod_ptmx(mnt->mnt_sb);
+ if (err)
+ goto fail;
+
+ return 0;
+
+fail:
+ dput(mnt->mnt_sb->s_root);
+ deactivate_super(mnt->mnt_sb);
+ return err;
+}
+
+/*
+ * Check if 'newinstance' mount option was specified in @data.
+ *
+ * Return: -errno on error (eg: invalid mount options specified)
+ * : 1 if 'newinstance' mount option was specified
+ * : 0 if 'newinstance' mount option was NOT specified
+ */
+static int is_new_instance_mount(void *data)
+{
+ int rc;
+ struct pts_mount_opts opts;
+
+ if (!data)
+ return 0;
+
+ rc = safe_parse_mount_options(data, &opts);
+ if (!rc)
+ rc = opts.newinstance;
+
+ return rc;
+}
+
+/*
+ * get_init_pts_sb()
+ *
+ * This interface is needed to support multiple namespace semantics in
+ * devpts while preserving backward compatibility of the current 'single-
+ * namespace' semantics. i.e all mounts of devpts without the 'newinstance'
+ * mount option should bind to the initial kernel mount, like
+ * get_sb_single().
+ *
+ * Mounts with 'newinstance' option create a new private namespace.
+ *
+ * But for single-mount semantics, devpts cannot use get_sb_single(),
+ * because get_sb_single()/sget() find and use the super-block from
+ * the most recent mount of devpts. But that recent mount may be a
+ * 'newinstance' mount and get_sb_single() would pick the newinstance
+ * super-block instead of the initial super-block.
+ *
+ * This interface is identical to get_sb_single() except that it
+ * consistently selects the 'single-namespace' superblock even in the
+ * presence of the private namespace (i.e 'newinstance') super-blocks.
+ */
+static int get_init_pts_sb(struct file_system_type *fs_type, int flags,
+ void *data, struct vfsmount *mnt)
+{
+ struct super_block *s;
+ int error;
+
+ s = sget(fs_type, compare_init_pts_sb, set_anon_super, NULL);
+ if (IS_ERR(s))
+ return PTR_ERR(s);
+
+ if (!s->s_root) {
+ s->s_flags = flags;
+ error = devpts_fill_super(s, data, flags & MS_SILENT ? 1 : 0);
+ if (error) {
+ up_write(&s->s_umount);
+ deactivate_super(s);
+ return error;
+ }
+ s->s_flags |= MS_ACTIVE;
+ }
+ do_remount_sb(s, flags, data, 0);
+ return simple_set_mnt(mnt, s);
+}
+
+/*
+ * Mount or remount the initial kernel mount of devpts. This type of
+ * mount maintains the legacy, single-instance semantics, while the
+ * kernel still allows multiple-instances.
+ */
+static int init_pts_mount(struct file_system_type *fs_type, int flags,
+ void *data, struct vfsmount *mnt)
+{
+ int err;
+
+ err = get_init_pts_sb(fs_type, flags, data, mnt);
+ if (err)
+ return err;
+
+ err = mknod_ptmx(mnt->mnt_sb);
+ if (err) {
+ dput(mnt->mnt_sb->s_root);
+ deactivate_super(mnt->mnt_sb);
+ }
+
+ return err;
+}
+
static int devpts_get_sb(struct file_system_type *fs_type,
int flags, const char *dev_name, void *data, struct vfsmount *mnt)
{
+ int new;
+
+ new = is_new_instance_mount(data);
+ if (new < 0)
+ return new;
+
+ if (new)
+ return new_pts_mount(fs_type, flags, data, mnt);
+
+ return init_pts_mount(fs_type, flags, data, mnt);
+}
+#else
+/*
+ * This supports only the legacy single-instance semantics (no
+ * multiple-instance semantics)
+ */
+static int devpts_get_sb(struct file_system_type *fs_type, int flags,
+ const char *dev_name, void *data, struct vfsmount *mnt)
+{
return get_sb_single(fs_type, flags, data, devpts_fill_super, mnt);
}
+#endif
+
+static void devpts_kill_sb(struct super_block *sb)
+{
+ struct pts_fs_info *fsi = DEVPTS_SB(sb);
+
+ kfree(fsi);
+ kill_litter_super(sb);
+}
static struct file_system_type devpts_fs_type = {
.owner = THIS_MODULE,
.name = "devpts",
.get_sb = devpts_get_sb,
- .kill_sb = kill_anon_super,
+ .kill_sb = devpts_kill_sb,
};
/*
@@ -172,16 +536,17 @@
int devpts_new_index(struct inode *ptmx_inode)
{
+ struct super_block *sb = pts_sb_from_inode(ptmx_inode);
+ struct pts_fs_info *fsi = DEVPTS_SB(sb);
int index;
int ida_ret;
retry:
- if (!ida_pre_get(&allocated_ptys, GFP_KERNEL)) {
+ if (!ida_pre_get(&fsi->allocated_ptys, GFP_KERNEL))
return -ENOMEM;
- }
mutex_lock(&allocated_ptys_lock);
- ida_ret = ida_get_new(&allocated_ptys, &index);
+ ida_ret = ida_get_new(&fsi->allocated_ptys, &index);
if (ida_ret < 0) {
mutex_unlock(&allocated_ptys_lock);
if (ida_ret == -EAGAIN)
@@ -190,7 +555,7 @@
}
if (index >= pty_limit) {
- ida_remove(&allocated_ptys, index);
+ ida_remove(&fsi->allocated_ptys, index);
mutex_unlock(&allocated_ptys_lock);
return -EIO;
}
@@ -200,18 +565,26 @@
void devpts_kill_index(struct inode *ptmx_inode, int idx)
{
+ struct super_block *sb = pts_sb_from_inode(ptmx_inode);
+ struct pts_fs_info *fsi = DEVPTS_SB(sb);
+
mutex_lock(&allocated_ptys_lock);
- ida_remove(&allocated_ptys, idx);
+ ida_remove(&fsi->allocated_ptys, idx);
mutex_unlock(&allocated_ptys_lock);
}
int devpts_pty_new(struct inode *ptmx_inode, struct tty_struct *tty)
{
- int number = tty->index; /* tty layer puts index from devpts_new_index() in here */
+ /* tty layer puts index from devpts_new_index() in here */
+ int number = tty->index;
struct tty_driver *driver = tty->driver;
dev_t device = MKDEV(driver->major, driver->minor_start+number);
struct dentry *dentry;
- struct inode *inode = new_inode(devpts_mnt->mnt_sb);
+ struct super_block *sb = pts_sb_from_inode(ptmx_inode);
+ struct inode *inode = new_inode(sb);
+ struct dentry *root = sb->s_root;
+ struct pts_fs_info *fsi = DEVPTS_SB(sb);
+ struct pts_mount_opts *opts = &fsi->mount_opts;
char s[12];
/* We're supposed to be given the slave end of a pty */
@@ -221,25 +594,25 @@
if (!inode)
return -ENOMEM;
- inode->i_ino = number+2;
- inode->i_uid = config.setuid ? config.uid : current_fsuid();
- inode->i_gid = config.setgid ? config.gid : current_fsgid();
+ inode->i_ino = number + 3;
+ inode->i_uid = opts->setuid ? opts->uid : current_fsuid();
+ inode->i_gid = opts->setgid ? opts->gid : current_fsgid();
inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
- init_special_inode(inode, S_IFCHR|config.mode, device);
+ init_special_inode(inode, S_IFCHR|opts->mode, device);
inode->i_private = tty;
tty->driver_data = inode;
sprintf(s, "%d", number);
- mutex_lock(&devpts_root->d_inode->i_mutex);
+ mutex_lock(&root->d_inode->i_mutex);
- dentry = d_alloc_name(devpts_root, s);
+ dentry = d_alloc_name(root, s);
if (!IS_ERR(dentry)) {
d_add(dentry, inode);
- fsnotify_create(devpts_root->d_inode, dentry);
+ fsnotify_create(root->d_inode, dentry);
}
- mutex_unlock(&devpts_root->d_inode->i_mutex);
+ mutex_unlock(&root->d_inode->i_mutex);
return 0;
}
@@ -256,20 +629,27 @@
void devpts_pty_kill(struct tty_struct *tty)
{
struct inode *inode = tty->driver_data;
+ struct super_block *sb = pts_sb_from_inode(inode);
+ struct dentry *root = sb->s_root;
struct dentry *dentry;
BUG_ON(inode->i_rdev == MKDEV(TTYAUX_MAJOR, PTMX_MINOR));
- mutex_lock(&devpts_root->d_inode->i_mutex);
+ mutex_lock(&root->d_inode->i_mutex);
dentry = d_find_alias(inode);
- if (dentry && !IS_ERR(dentry)) {
+ if (IS_ERR(dentry))
+ goto out;
+
+ if (dentry) {
inode->i_nlink--;
d_delete(dentry);
- dput(dentry);
+ dput(dentry); /* d_alloc_name() in devpts_pty_new() */
}
- mutex_unlock(&devpts_root->d_inode->i_mutex);
+ dput(dentry); /* d_find_alias above */
+out:
+ mutex_unlock(&root->d_inode->i_mutex);
}
static int __init init_devpts_fs(void)
diff --git a/include/linux/8250_pci.h b/include/linux/8250_pci.h
index 3209dd4..b24ff08 100644
--- a/include/linux/8250_pci.h
+++ b/include/linux/8250_pci.h
@@ -31,7 +31,7 @@
struct serial_private;
struct serial_private *
-pciserial_init_ports(struct pci_dev *dev, struct pciserial_board *board);
+pciserial_init_ports(struct pci_dev *dev, const struct pciserial_board *board);
void pciserial_remove_ports(struct serial_private *priv);
void pciserial_suspend_ports(struct serial_private *priv);
void pciserial_resume_ports(struct serial_private *priv);
diff --git a/include/linux/compiler-gcc.h b/include/linux/compiler-gcc.h
index 5c8351b..af40f8e 100644
--- a/include/linux/compiler-gcc.h
+++ b/include/linux/compiler-gcc.h
@@ -61,3 +61,8 @@
#define noinline __attribute__((noinline))
#define __attribute_const__ __attribute__((__const__))
#define __maybe_unused __attribute__((unused))
+
+#define __gcc_header(x) #x
+#define _gcc_header(x) __gcc_header(linux/compiler-gcc##x.h)
+#define gcc_header(x) _gcc_header(x)
+#include gcc_header(__GNUC__)
diff --git a/include/linux/compiler-gcc3.h b/include/linux/compiler-gcc3.h
index e5eb795..2befe65 100644
--- a/include/linux/compiler-gcc3.h
+++ b/include/linux/compiler-gcc3.h
@@ -2,9 +2,6 @@
#error "Please don't include <linux/compiler-gcc3.h> directly, include <linux/compiler.h> instead."
#endif
-/* These definitions are for GCC v3.x. */
-#include <linux/compiler-gcc.h>
-
#if __GNUC_MINOR__ >= 3
# define __used __attribute__((__used__))
#else
diff --git a/include/linux/compiler-gcc4.h b/include/linux/compiler-gcc4.h
index 974f5b7..0999271 100644
--- a/include/linux/compiler-gcc4.h
+++ b/include/linux/compiler-gcc4.h
@@ -2,8 +2,10 @@
#error "Please don't include <linux/compiler-gcc4.h> directly, include <linux/compiler.h> instead."
#endif
-/* These definitions are for GCC v4.x. */
-#include <linux/compiler-gcc.h>
+/* GCC 4.1.[01] miscompiles __weak */
+#if __GNUC_MINOR__ == 1 && __GNUC_PATCHLEVEL__ <= 1
+# error Your version of gcc miscompiles the __weak directive
+#endif
#define __used __attribute__((__used__))
#define __must_check __attribute__((warn_unused_result))
@@ -16,7 +18,7 @@
*/
#define uninitialized_var(x) x = x
-#if !(__GNUC__ == 4 && __GNUC_MINOR__ < 3)
+#if __GNUC_MINOR__ >= 3
/* Mark functions as cold. gcc will assume any path leading to a call
to them will be unlikely. This means a lot of manual unlikely()s
are unnecessary now for any paths leading to the usual suspects
diff --git a/include/linux/compiler.h b/include/linux/compiler.h
index ea7c6be..d95da10 100644
--- a/include/linux/compiler.h
+++ b/include/linux/compiler.h
@@ -36,12 +36,8 @@
#ifdef __KERNEL__
-#if __GNUC__ >= 4
-# include <linux/compiler-gcc4.h>
-#elif __GNUC__ == 3 && __GNUC_MINOR__ >= 2
-# include <linux/compiler-gcc3.h>
-#else
-# error Sorry, your compiler is too old/not recognized.
+#ifdef __GNUC__
+#include <linux/compiler-gcc.h>
#endif
#define notrace __attribute__((no_instrument_function))
diff --git a/include/linux/generic_serial.h b/include/linux/generic_serial.h
index 4cc9139..fadff28 100644
--- a/include/linux/generic_serial.h
+++ b/include/linux/generic_serial.h
@@ -21,7 +21,6 @@
void (*enable_tx_interrupts) (void *);
void (*disable_rx_interrupts) (void *);
void (*enable_rx_interrupts) (void *);
- int (*get_CD) (void *);
void (*shutdown_port) (void*);
int (*set_real_termios) (void*);
int (*chars_in_buffer) (void*);
diff --git a/include/linux/istallion.h b/include/linux/istallion.h
index 0d18407..7faca98 100644
--- a/include/linux/istallion.h
+++ b/include/linux/istallion.h
@@ -59,9 +59,7 @@
unsigned int devnr;
int baud_base;
int custom_divisor;
- int close_delay;
int closing_wait;
- int openwaitcnt;
int rc;
int argsize;
void *argp;
diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
index b6e6944..218c73b 100644
--- a/include/linux/pci_ids.h
+++ b/include/linux/pci_ids.h
@@ -1766,6 +1766,7 @@
#define PCI_DEVICE_ID_SIIG_8S_20x_650 0x2081
#define PCI_DEVICE_ID_SIIG_8S_20x_850 0x2082
#define PCI_SUBDEVICE_ID_SIIG_QUARTET_SERIAL 0x2050
+#define PCI_SUBDEVICE_ID_SIIG_DUAL_SERIAL 0x2530
#define PCI_VENDOR_ID_RADISYS 0x1331
@@ -1795,6 +1796,7 @@
#define PCI_DEVICE_ID_SEALEVEL_UCOMM232 0x7202
#define PCI_DEVICE_ID_SEALEVEL_COMM4 0x7401
#define PCI_DEVICE_ID_SEALEVEL_COMM8 0x7801
+#define PCI_DEVICE_ID_SEALEVEL_7803 0x7803
#define PCI_DEVICE_ID_SEALEVEL_UCOMM8 0x7804
#define PCI_VENDOR_ID_HYPERCOPE 0x1365
diff --git a/include/linux/serial.h b/include/linux/serial.h
index 1ea8d92..9136cc5 100644
--- a/include/linux/serial.h
+++ b/include/linux/serial.h
@@ -10,8 +10,9 @@
#ifndef _LINUX_SERIAL_H
#define _LINUX_SERIAL_H
-#ifdef __KERNEL__
#include <linux/types.h>
+
+#ifdef __KERNEL__
#include <asm/page.h>
/*
diff --git a/include/linux/serial_8250.h b/include/linux/serial_8250.h
index 3d37c94..d4d2a78 100644
--- a/include/linux/serial_8250.h
+++ b/include/linux/serial_8250.h
@@ -28,6 +28,9 @@
unsigned char iotype; /* UPIO_* */
unsigned char hub6;
upf_t flags; /* UPF_* flags */
+ unsigned int type; /* If UPF_FIXED_TYPE */
+ unsigned int (*serial_in)(struct uart_port *, int);
+ void (*serial_out)(struct uart_port *, int, int);
};
/*
diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h
index feb3b93..b419984 100644
--- a/include/linux/serial_core.h
+++ b/include/linux/serial_core.h
@@ -40,7 +40,8 @@
#define PORT_NS16550A 14
#define PORT_XSCALE 15
#define PORT_RM9000 16 /* PMC-Sierra RM9xxx internal UART */
-#define PORT_MAX_8250 16 /* max port ID */
+#define PORT_OCTEON 17 /* Cavium OCTEON internal UART */
+#define PORT_MAX_8250 17 /* max port ID */
/*
* ARM specific type numbers. These are not currently guaranteed
@@ -248,6 +249,8 @@
spinlock_t lock; /* port lock */
unsigned long iobase; /* in/out[bwl] */
unsigned char __iomem *membase; /* read/write[bwl] */
+ unsigned int (*serial_in)(struct uart_port *, int);
+ void (*serial_out)(struct uart_port *, int, int);
unsigned int irq; /* irq number */
unsigned int uartclk; /* base uart clock */
unsigned int fifosize; /* tx fifo size */
@@ -293,6 +296,8 @@
#define UPF_MAGIC_MULTIPLIER ((__force upf_t) (1 << 16))
#define UPF_CONS_FLOW ((__force upf_t) (1 << 23))
#define UPF_SHARE_IRQ ((__force upf_t) (1 << 24))
+/* The exact UART type is known and should not be probed. */
+#define UPF_FIXED_TYPE ((__force upf_t) (1 << 27))
#define UPF_BOOT_AUTOCONF ((__force upf_t) (1 << 28))
#define UPF_FIXED_PORT ((__force upf_t) (1 << 29))
#define UPF_DEAD ((__force upf_t) (1 << 30))
@@ -316,35 +321,13 @@
};
/*
- * This is the state information which is persistent across opens.
- * The low level driver must not to touch any elements contained
- * within.
- */
-struct uart_state {
- unsigned int close_delay; /* msec */
- unsigned int closing_wait; /* msec */
-
-#define USF_CLOSING_WAIT_INF (0)
-#define USF_CLOSING_WAIT_NONE (~0U)
-
- int count;
- int pm_state;
- struct uart_info *info;
- struct uart_port *port;
-
- struct mutex mutex;
-};
-
-#define UART_XMIT_SIZE PAGE_SIZE
-
-typedef unsigned int __bitwise__ uif_t;
-
-/*
* This is the state information which is only valid when the port
- * is open; it may be freed by the core driver once the device has
+ * is open; it may be cleared the core driver once the device has
* been closed. Either the low level driver or the core can modify
* stuff here.
*/
+typedef unsigned int __bitwise__ uif_t;
+
struct uart_info {
struct tty_port port;
struct circ_buf xmit;
@@ -366,6 +349,29 @@
wait_queue_head_t delta_msr_wait;
};
+/*
+ * This is the state information which is persistent across opens.
+ * The low level driver must not to touch any elements contained
+ * within.
+ */
+struct uart_state {
+ unsigned int close_delay; /* msec */
+ unsigned int closing_wait; /* msec */
+
+#define USF_CLOSING_WAIT_INF (0)
+#define USF_CLOSING_WAIT_NONE (~0U)
+
+ int count;
+ int pm_state;
+ struct uart_info info;
+ struct uart_port *port;
+
+ struct mutex mutex;
+};
+
+#define UART_XMIT_SIZE PAGE_SIZE
+
+
/* number of characters left in xmit buffer before we ask for more */
#define WAKEUP_CHARS 256
@@ -439,8 +445,13 @@
#define uart_circ_chars_free(circ) \
(CIRC_SPACE((circ)->head, (circ)->tail, UART_XMIT_SIZE))
-#define uart_tx_stopped(portp) \
- ((portp)->info->port.tty->stopped || (portp)->info->port.tty->hw_stopped)
+static inline int uart_tx_stopped(struct uart_port *port)
+{
+ struct tty_struct *tty = port->info->port.tty;
+ if(tty->stopped || tty->hw_stopped)
+ return 1;
+ return 0;
+}
/*
* The following are helper functions for the low level drivers.
@@ -451,7 +462,7 @@
#ifdef SUPPORT_SYSRQ
if (port->sysrq) {
if (ch && time_before(jiffies, port->sysrq)) {
- handle_sysrq(ch, port->info ? port->info->port.tty : NULL);
+ handle_sysrq(ch, port->info->port.tty);
port->sysrq = 0;
return 1;
}
diff --git a/include/linux/tty.h b/include/linux/tty.h
index 3f4954c..fc39db9 100644
--- a/include/linux/tty.h
+++ b/include/linux/tty.h
@@ -180,8 +180,17 @@
* until a hangup so don't use the wrong path.
*/
+struct tty_port;
+
+struct tty_port_operations {
+ /* Return 1 if the carrier is raised */
+ int (*carrier_raised)(struct tty_port *port);
+ void (*raise_dtr_rts)(struct tty_port *port);
+};
+
struct tty_port {
struct tty_struct *tty; /* Back pointer */
+ const struct tty_port_operations *ops; /* Port operations */
spinlock_t lock; /* Lock protecting tty field */
int blocked_open; /* Waiting to open */
int count; /* Usage count */
@@ -253,6 +262,7 @@
unsigned int column;
unsigned char lnext:1, erasing:1, raw:1, real_raw:1, icanon:1;
unsigned char closing:1;
+ unsigned char echo_overrun:1;
unsigned short minimum_to_wake;
unsigned long overrun_time;
int num_overrun;
@@ -262,11 +272,16 @@
int read_tail;
int read_cnt;
unsigned long read_flags[N_TTY_BUF_SIZE/(8*sizeof(unsigned long))];
+ unsigned char *echo_buf;
+ unsigned int echo_pos;
+ unsigned int echo_cnt;
int canon_data;
unsigned long canon_head;
unsigned int canon_column;
struct mutex atomic_read_lock;
struct mutex atomic_write_lock;
+ struct mutex output_lock;
+ struct mutex echo_lock;
unsigned char *write_buf;
int write_cnt;
spinlock_t read_lock;
@@ -295,6 +310,7 @@
#define TTY_PUSH 6 /* n_tty private */
#define TTY_CLOSING 7 /* ->close() in progress */
#define TTY_LDISC 9 /* Line discipline attached */
+#define TTY_LDISC_CHANGING 10 /* Line discipline changing */
#define TTY_HW_COOK_OUT 14 /* Hardware can do output cooking */
#define TTY_HW_COOK_IN 15 /* Hardware can do input cooking */
#define TTY_PTY_LOCK 16 /* pty private */
@@ -354,8 +370,7 @@
extern void tty_driver_flush_buffer(struct tty_struct *tty);
extern void tty_throttle(struct tty_struct *tty);
extern void tty_unthrottle(struct tty_struct *tty);
-extern int tty_do_resize(struct tty_struct *tty, struct tty_struct *real_tty,
- struct winsize *ws);
+extern int tty_do_resize(struct tty_struct *tty, struct winsize *ws);
extern void tty_shutdown(struct tty_struct *tty);
extern void tty_free_termios(struct tty_struct *tty);
extern int is_current_pgrp_orphaned(void);
@@ -421,6 +436,14 @@
extern void tty_port_free_xmit_buf(struct tty_port *port);
extern struct tty_struct *tty_port_tty_get(struct tty_port *port);
extern void tty_port_tty_set(struct tty_port *port, struct tty_struct *tty);
+extern int tty_port_carrier_raised(struct tty_port *port);
+extern void tty_port_raise_dtr_rts(struct tty_port *port);
+extern void tty_port_hangup(struct tty_port *port);
+extern int tty_port_block_til_ready(struct tty_port *port,
+ struct tty_struct *tty, struct file *filp);
+extern int tty_port_close_start(struct tty_port *port,
+ struct tty_struct *tty, struct file *filp);
+extern void tty_port_close_end(struct tty_port *port, struct tty_struct *tty);
extern int tty_register_ldisc(int disc, struct tty_ldisc_ops *new_ldisc);
extern int tty_unregister_ldisc(int disc);
diff --git a/include/linux/tty_driver.h b/include/linux/tty_driver.h
index 78416b9..08e0883 100644
--- a/include/linux/tty_driver.h
+++ b/include/linux/tty_driver.h
@@ -196,8 +196,7 @@
* Optional: If not provided then the write method is called under
* the atomic write lock to keep it serialized with the ldisc.
*
- * int (*resize)(struct tty_struct *tty, struct tty_struct *real_tty,
- * unsigned int rows, unsigned int cols);
+ * int (*resize)(struct tty_struct *tty, struct winsize *ws)
*
* Called when a termios request is issued which changes the
* requested terminal geometry.
@@ -258,8 +257,7 @@
int (*tiocmget)(struct tty_struct *tty, struct file *file);
int (*tiocmset)(struct tty_struct *tty, struct file *file,
unsigned int set, unsigned int clear);
- int (*resize)(struct tty_struct *tty, struct tty_struct *real_tty,
- struct winsize *ws);
+ int (*resize)(struct tty_struct *tty, struct winsize *ws);
int (*set_termiox)(struct tty_struct *tty, struct termiox *tnew);
#ifdef CONFIG_CONSOLE_POLL
int (*poll_init)(struct tty_driver *driver, int line, char *options);
diff --git a/include/linux/usb/wusb-wa.h b/include/linux/usb/wusb-wa.h
index a102561..fb7c359 100644
--- a/include/linux/usb/wusb-wa.h
+++ b/include/linux/usb/wusb-wa.h
@@ -51,6 +51,7 @@
WUSB_REQ_GET_TIME = 25,
WUSB_REQ_SET_STREAM_IDX = 26,
WUSB_REQ_SET_WUSB_MAS = 27,
+ WUSB_REQ_CHAN_STOP = 28,
};
diff --git a/include/linux/uwb.h b/include/linux/uwb.h
index f9ccbd9..c021289 100644
--- a/include/linux/uwb.h
+++ b/include/linux/uwb.h
@@ -30,6 +30,7 @@
#include <linux/device.h>
#include <linux/mutex.h>
#include <linux/timer.h>
+#include <linux/wait.h>
#include <linux/workqueue.h>
#include <linux/uwb/spec.h>
@@ -66,6 +67,7 @@
struct uwb_dev_addr dev_addr;
int beacon_slot;
DECLARE_BITMAP(streams, UWB_NUM_STREAMS);
+ DECLARE_BITMAP(last_availability_bm, UWB_NUM_MAS);
};
#define to_uwb_dev(d) container_of(d, struct uwb_dev, dev)
@@ -86,12 +88,31 @@
struct mutex mutex;
};
+/* Beacon cache list */
+struct uwb_beca {
+ struct list_head list;
+ size_t entries;
+ struct mutex mutex;
+};
+
+/* Event handling thread. */
+struct uwbd {
+ int pid;
+ struct task_struct *task;
+ wait_queue_head_t wq;
+ struct list_head event_list;
+ spinlock_t event_list_lock;
+};
+
/**
* struct uwb_mas_bm - a bitmap of all MAS in a superframe
* @bm: a bitmap of length #UWB_NUM_MAS
*/
struct uwb_mas_bm {
DECLARE_BITMAP(bm, UWB_NUM_MAS);
+ DECLARE_BITMAP(unsafe_bm, UWB_NUM_MAS);
+ int safe;
+ int unsafe;
};
/**
@@ -117,14 +138,24 @@
* FIXME: further target states TBD.
*/
enum uwb_rsv_state {
- UWB_RSV_STATE_NONE,
+ UWB_RSV_STATE_NONE = 0,
UWB_RSV_STATE_O_INITIATED,
UWB_RSV_STATE_O_PENDING,
UWB_RSV_STATE_O_MODIFIED,
UWB_RSV_STATE_O_ESTABLISHED,
+ UWB_RSV_STATE_O_TO_BE_MOVED,
+ UWB_RSV_STATE_O_MOVE_EXPANDING,
+ UWB_RSV_STATE_O_MOVE_COMBINING,
+ UWB_RSV_STATE_O_MOVE_REDUCING,
UWB_RSV_STATE_T_ACCEPTED,
UWB_RSV_STATE_T_DENIED,
+ UWB_RSV_STATE_T_CONFLICT,
UWB_RSV_STATE_T_PENDING,
+ UWB_RSV_STATE_T_EXPANDING_ACCEPTED,
+ UWB_RSV_STATE_T_EXPANDING_CONFLICT,
+ UWB_RSV_STATE_T_EXPANDING_PENDING,
+ UWB_RSV_STATE_T_EXPANDING_DENIED,
+ UWB_RSV_STATE_T_RESIZED,
UWB_RSV_STATE_LAST,
};
@@ -149,6 +180,12 @@
};
};
+struct uwb_rsv_move {
+ struct uwb_mas_bm final_mas;
+ struct uwb_ie_drp *companion_drp_ie;
+ struct uwb_mas_bm companion_mas;
+};
+
/*
* Number of streams reserved for reservations targeted at DevAddrs.
*/
@@ -186,6 +223,7 @@
*
* @status: negotiation status
* @stream: stream index allocated for this reservation
+ * @tiebreaker: conflict tiebreaker for this reservation
* @mas: reserved MAS
* @drp_ie: the DRP IE
* @ie_valid: true iff the DRP IE matches the reservation parameters
@@ -201,25 +239,29 @@
struct uwb_rc *rc;
struct list_head rc_node;
struct list_head pal_node;
+ struct kref kref;
struct uwb_dev *owner;
struct uwb_rsv_target target;
enum uwb_drp_type type;
int max_mas;
int min_mas;
- int sparsity;
+ int max_interval;
bool is_multicast;
uwb_rsv_cb_f callback;
void *pal_priv;
enum uwb_rsv_state state;
+ bool needs_release_companion_mas;
u8 stream;
+ u8 tiebreaker;
struct uwb_mas_bm mas;
struct uwb_ie_drp *drp_ie;
+ struct uwb_rsv_move mv;
bool ie_valid;
struct timer_list timer;
- bool expired;
+ struct work_struct handle_timeout_work;
};
static const
@@ -261,6 +303,13 @@
bool ie_valid;
};
+struct uwb_drp_backoff_win {
+ u8 window;
+ u8 n;
+ int total_expired;
+ struct timer_list timer;
+ bool can_reserve_extra_mases;
+};
const char *uwb_rsv_state_str(enum uwb_rsv_state state);
const char *uwb_rsv_type_str(enum uwb_drp_type type);
@@ -276,6 +325,8 @@
void uwb_rsv_accept(struct uwb_rsv *rsv, uwb_rsv_cb_f cb, void *pal_priv);
+void uwb_rsv_get_usable_mas(struct uwb_rsv *orig_rsv, struct uwb_mas_bm *mas);
+
/**
* Radio Control Interface instance
*
@@ -337,23 +388,33 @@
u8 ctx_roll;
int beaconing; /* Beaconing state [channel number] */
+ int beaconing_forced;
int scanning;
enum uwb_scan_type scan_type:3;
unsigned ready:1;
struct uwb_notifs_chain notifs_chain;
+ struct uwb_beca uwb_beca;
+ struct uwbd uwbd;
+
+ struct uwb_drp_backoff_win bow;
struct uwb_drp_avail drp_avail;
struct list_head reservations;
+ struct list_head cnflt_alien_list;
+ struct uwb_mas_bm cnflt_alien_bitmap;
struct mutex rsvs_mutex;
+ spinlock_t rsvs_lock;
struct workqueue_struct *rsv_workq;
- struct work_struct rsv_update_work;
+ struct delayed_work rsv_update_work;
+ struct delayed_work rsv_alien_bp_work;
+ int set_drp_ie_pending;
struct mutex ies_mutex;
struct uwb_rc_cmd_set_ie *ies;
size_t ies_capacity;
- spinlock_t pal_lock;
struct list_head pals;
+ int active_pals;
struct uwb_dbg *dbg;
};
@@ -361,11 +422,19 @@
/**
* struct uwb_pal - a UWB PAL
- * @name: descriptive name for this PAL (wushc, wlp, etc.).
+ * @name: descriptive name for this PAL (wusbhc, wlp, etc.).
* @device: a device for the PAL. Used to link the PAL and the radio
* controller in sysfs.
+ * @rc: the radio controller the PAL uses.
+ * @channel_changed: called when the channel used by the radio changes.
+ * A channel of -1 means the channel has been stopped.
* @new_rsv: called when a peer requests a reservation (may be NULL if
* the PAL cannot accept reservation requests).
+ * @channel: channel being used by the PAL; 0 if the PAL isn't using
+ * the radio; -1 if the PAL wishes to use the radio but
+ * cannot.
+ * @debugfs_dir: a debugfs directory which the PAL can use for its own
+ * debugfs files.
*
* A Protocol Adaptation Layer (PAL) is a user of the WiMedia UWB
* radio platform (e.g., WUSB, WLP or Bluetooth UWB AMP).
@@ -384,12 +453,21 @@
struct list_head node;
const char *name;
struct device *device;
- void (*new_rsv)(struct uwb_rsv *rsv);
+ struct uwb_rc *rc;
+
+ void (*channel_changed)(struct uwb_pal *pal, int channel);
+ void (*new_rsv)(struct uwb_pal *pal, struct uwb_rsv *rsv);
+
+ int channel;
+ struct dentry *debugfs_dir;
};
void uwb_pal_init(struct uwb_pal *pal);
-int uwb_pal_register(struct uwb_rc *rc, struct uwb_pal *pal);
-void uwb_pal_unregister(struct uwb_rc *rc, struct uwb_pal *pal);
+int uwb_pal_register(struct uwb_pal *pal);
+void uwb_pal_unregister(struct uwb_pal *pal);
+
+int uwb_radio_start(struct uwb_pal *pal);
+void uwb_radio_stop(struct uwb_pal *pal);
/*
* General public API
@@ -443,8 +521,6 @@
struct uwb_rccb *cmd, size_t cmd_size,
u8 expected_type, u16 expected_event,
struct uwb_rceb **preply);
-ssize_t uwb_rc_get_ie(struct uwb_rc *, struct uwb_rc_evt_get_ie **);
-int uwb_bg_joined(struct uwb_rc *rc);
size_t __uwb_addr_print(char *, size_t, const unsigned char *, int);
@@ -520,6 +596,8 @@
void uwb_rc_neh_grok(struct uwb_rc *, void *, size_t);
void uwb_rc_neh_error(struct uwb_rc *, int);
void uwb_rc_reset_all(struct uwb_rc *rc);
+void uwb_rc_pre_reset(struct uwb_rc *rc);
+void uwb_rc_post_reset(struct uwb_rc *rc);
/**
* uwb_rsv_is_owner - is the owner of this reservation the RC?
@@ -531,7 +609,9 @@
}
/**
- * Events generated by UWB that can be passed to any listeners
+ * enum uwb_notifs - UWB events that can be passed to any listeners
+ * @UWB_NOTIF_ONAIR: a new neighbour has joined the beacon group.
+ * @UWB_NOTIF_OFFAIR: a neighbour has left the beacon group.
*
* Higher layers can register callback functions with the radio
* controller using uwb_notifs_register(). The radio controller
@@ -539,8 +619,6 @@
* nodes when an event occurs.
*/
enum uwb_notifs {
- UWB_NOTIF_BG_JOIN = 0, /* radio controller joined a beacon group */
- UWB_NOTIF_BG_LEAVE = 1, /* radio controller left a beacon group */
UWB_NOTIF_ONAIR,
UWB_NOTIF_OFFAIR,
};
@@ -652,22 +730,9 @@
/* Information Element handling */
-/* For representing the state of writing to a buffer when iterating */
-struct uwb_buf_ctx {
- char *buf;
- size_t bytes, size;
-};
-
-typedef int (*uwb_ie_f)(struct uwb_dev *, const struct uwb_ie_hdr *,
- size_t, void *);
struct uwb_ie_hdr *uwb_ie_next(void **ptr, size_t *len);
-ssize_t uwb_ie_for_each(struct uwb_dev *uwb_dev, uwb_ie_f fn, void *data,
- const void *buf, size_t size);
-int uwb_ie_dump_hex(struct uwb_dev *, const struct uwb_ie_hdr *,
- size_t, void *);
-int uwb_rc_set_ie(struct uwb_rc *, struct uwb_rc_cmd_set_ie *);
-struct uwb_ie_hdr *uwb_ie_next(void **ptr, size_t *len);
-
+int uwb_rc_ie_add(struct uwb_rc *uwb_rc, const struct uwb_ie_hdr *ies, size_t size);
+int uwb_rc_ie_rm(struct uwb_rc *uwb_rc, enum uwb_ie element_id);
/*
* Transmission statistics
diff --git a/include/linux/uwb/debug-cmd.h b/include/linux/uwb/debug-cmd.h
index 1141f41..8da004e 100644
--- a/include/linux/uwb/debug-cmd.h
+++ b/include/linux/uwb/debug-cmd.h
@@ -32,6 +32,10 @@
enum uwb_dbg_cmd_type {
UWB_DBG_CMD_RSV_ESTABLISH = 1,
UWB_DBG_CMD_RSV_TERMINATE = 2,
+ UWB_DBG_CMD_IE_ADD = 3,
+ UWB_DBG_CMD_IE_RM = 4,
+ UWB_DBG_CMD_RADIO_START = 5,
+ UWB_DBG_CMD_RADIO_STOP = 6,
};
struct uwb_dbg_cmd_rsv_establish {
@@ -39,18 +43,25 @@
__u8 type;
__u16 max_mas;
__u16 min_mas;
- __u8 sparsity;
+ __u8 max_interval;
};
struct uwb_dbg_cmd_rsv_terminate {
int index;
};
+struct uwb_dbg_cmd_ie {
+ __u8 data[128];
+ int len;
+};
+
struct uwb_dbg_cmd {
__u32 type;
union {
struct uwb_dbg_cmd_rsv_establish rsv_establish;
struct uwb_dbg_cmd_rsv_terminate rsv_terminate;
+ struct uwb_dbg_cmd_ie ie_add;
+ struct uwb_dbg_cmd_ie ie_rm;
};
};
diff --git a/include/linux/uwb/debug.h b/include/linux/uwb/debug.h
deleted file mode 100644
index a86a73f..0000000
--- a/include/linux/uwb/debug.h
+++ /dev/null
@@ -1,82 +0,0 @@
-/*
- * Ultra Wide Band
- * Debug Support
- *
- * Copyright (C) 2005-2006 Intel Corporation
- * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License version
- * 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA.
- *
- *
- * FIXME: doc
- * Invoke like:
- *
- * #define D_LOCAL 4
- * #include <linux/uwb/debug.h>
- *
- * At the end of your include files.
- */
-#include <linux/types.h>
-
-struct device;
-extern void dump_bytes(struct device *dev, const void *_buf, size_t rsize);
-
-/* Master debug switch; !0 enables, 0 disables */
-#define D_MASTER (!0)
-
-/* Local (per-file) debug switch; #define before #including */
-#ifndef D_LOCAL
-#define D_LOCAL 0
-#endif
-
-#undef __d_printf
-#undef d_fnstart
-#undef d_fnend
-#undef d_printf
-#undef d_dump
-
-#define __d_printf(l, _tag, _dev, f, a...) \
-do { \
- struct device *__dev = (_dev); \
- if (D_MASTER && D_LOCAL >= (l)) { \
- char __head[64] = ""; \
- if (_dev != NULL) { \
- if ((unsigned long)__dev < 4096) \
- printk(KERN_ERR "E: Corrupt dev %p\n", \
- __dev); \
- else \
- snprintf(__head, sizeof(__head), \
- "%s %s: ", \
- dev_driver_string(__dev), \
- __dev->bus_id); \
- } \
- printk(KERN_ERR "%s%s" _tag ": " f, __head, \
- __func__, ## a); \
- } \
-} while (0 && _dev)
-
-#define d_fnstart(l, _dev, f, a...) \
- __d_printf(l, " FNSTART", _dev, f, ## a)
-#define d_fnend(l, _dev, f, a...) \
- __d_printf(l, " FNEND", _dev, f, ## a)
-#define d_printf(l, _dev, f, a...) \
- __d_printf(l, "", _dev, f, ## a)
-#define d_dump(l, _dev, ptr, size) \
-do { \
- struct device *__dev = _dev; \
- if (D_MASTER && D_LOCAL >= (l)) \
- dump_bytes(__dev, ptr, size); \
-} while (0 && _dev)
-#define d_test(l) (D_MASTER && D_LOCAL >= (l))
diff --git a/include/linux/uwb/spec.h b/include/linux/uwb/spec.h
index 198c15f..b52e44f 100644
--- a/include/linux/uwb/spec.h
+++ b/include/linux/uwb/spec.h
@@ -59,6 +59,11 @@
#define UWB_MAS_PER_ZONE (UWB_NUM_MAS / UWB_NUM_ZONES)
/*
+ * Number of MAS required before a row can be considered available.
+ */
+#define UWB_USABLE_MAS_PER_ROW (UWB_NUM_ZONES - 1)
+
+/*
* Number of streams per DRP reservation between a pair of devices.
*
* [ECMA-368] section 16.8.6.
@@ -94,6 +99,26 @@
enum { UWB_MAX_LOST_BEACONS = 3 };
/*
+ * mDRPBackOffWinMin
+ *
+ * The minimum number of superframes to wait before trying to reserve
+ * extra MAS.
+ *
+ * [ECMA-368] section 17.16
+ */
+enum { UWB_DRP_BACKOFF_WIN_MIN = 2 };
+
+/*
+ * mDRPBackOffWinMax
+ *
+ * The maximum number of superframes to wait before trying to reserve
+ * extra MAS.
+ *
+ * [ECMA-368] section 17.16
+ */
+enum { UWB_DRP_BACKOFF_WIN_MAX = 16 };
+
+/*
* Length of a superframe in microseconds.
*/
#define UWB_SUPERFRAME_LENGTH_US (UWB_MAS_LENGTH_US * UWB_NUM_MAS)
@@ -200,6 +225,12 @@
UWB_DRP_REASON_MODIFIED,
};
+/** Relinquish Request Reason Codes ([ECMA-368] table 113) */
+enum uwb_relinquish_req_reason {
+ UWB_RELINQUISH_REQ_REASON_NON_SPECIFIC = 0,
+ UWB_RELINQUISH_REQ_REASON_OVER_ALLOCATION,
+};
+
/**
* DRP Notification Reason Codes (WHCI 0.95 [3.1.4.9])
*/
@@ -252,6 +283,7 @@
UWB_APP_SPEC_PROBE_IE = 15,
UWB_IDENTIFICATION_IE = 19,
UWB_MASTER_KEY_ID_IE = 20,
+ UWB_RELINQUISH_REQUEST_IE = 21,
UWB_IE_WLP = 250, /* WiMedia Logical Link Control Protocol WLP 0.99 */
UWB_APP_SPEC_IE = 255,
};
@@ -365,6 +397,27 @@
DECLARE_BITMAP(bmp, UWB_NUM_MAS);
} __attribute__((packed));
+/* Relinqish Request IE ([ECMA-368] section 16.8.19). */
+struct uwb_relinquish_request_ie {
+ struct uwb_ie_hdr hdr;
+ __le16 relinquish_req_control;
+ struct uwb_dev_addr dev_addr;
+ struct uwb_drp_alloc allocs[];
+} __attribute__((packed));
+
+static inline int uwb_ie_relinquish_req_reason_code(struct uwb_relinquish_request_ie *ie)
+{
+ return (le16_to_cpu(ie->relinquish_req_control) >> 0) & 0xf;
+}
+
+static inline void uwb_ie_relinquish_req_set_reason_code(struct uwb_relinquish_request_ie *ie,
+ int reason_code)
+{
+ u16 ctrl = le16_to_cpu(ie->relinquish_req_control);
+ ctrl = (ctrl & ~(0xf << 0)) | (reason_code << 0);
+ ie->relinquish_req_control = cpu_to_le16(ctrl);
+}
+
/**
* The Vendor ID is set to an OUI that indicates the vendor of the device.
* ECMA-368 [16.8.10]
diff --git a/include/linux/uwb/umc.h b/include/linux/uwb/umc.h
index 36a39e3..4b4fc0f 100644
--- a/include/linux/uwb/umc.h
+++ b/include/linux/uwb/umc.h
@@ -89,6 +89,8 @@
void (*remove)(struct umc_dev *);
int (*suspend)(struct umc_dev *, pm_message_t state);
int (*resume)(struct umc_dev *);
+ int (*pre_reset)(struct umc_dev *);
+ int (*post_reset)(struct umc_dev *);
struct device_driver driver;
};
diff --git a/include/linux/wlp.h b/include/linux/wlp.h
index 033545e..ac95ce6 100644
--- a/include/linux/wlp.h
+++ b/include/linux/wlp.h
@@ -646,6 +646,7 @@
struct wlp {
struct mutex mutex;
struct uwb_rc *rc; /* UWB radio controller */
+ struct net_device *ndev;
struct uwb_pal pal;
struct wlp_eda eda;
struct wlp_uuid uuid;
@@ -675,7 +676,7 @@
static struct wlp_wss_attribute wss_attr_##_name = __ATTR(_name, _mode, \
_show, _store)
-extern int wlp_setup(struct wlp *, struct uwb_rc *);
+extern int wlp_setup(struct wlp *, struct uwb_rc *, struct net_device *ndev);
extern void wlp_remove(struct wlp *);
extern ssize_t wlp_neighborhood_show(struct wlp *, char *);
extern int wlp_wss_setup(struct net_device *, struct wlp_wss *);
diff --git a/init/main.c b/init/main.c
index f5e64f2..ad8f9f5 100644
--- a/init/main.c
+++ b/init/main.c
@@ -75,15 +75,6 @@
#include <asm/smp.h>
#endif
-/*
- * This is one of the first .c files built. Error out early if we have compiler
- * trouble.
- */
-
-#if __GNUC__ == 4 && __GNUC_MINOR__ == 1 && __GNUC_PATCHLEVEL__ == 0
-#warning gcc-4.1.0 is known to miscompile the kernel. A different compiler version is recommended.
-#endif
-
static int kernel_init(void *);
extern void init_IRQ(void);
diff --git a/net/irda/ircomm/ircomm_tty.c b/net/irda/ircomm/ircomm_tty.c
index e4e2cae..086d5ef 100644
--- a/net/irda/ircomm/ircomm_tty.c
+++ b/net/irda/ircomm/ircomm_tty.c
@@ -371,9 +371,8 @@
IRDA_DEBUG(2, "%s()\n", __func__ );
line = tty->index;
- if ((line < 0) || (line >= IRCOMM_TTY_PORTS)) {
+ if (line >= IRCOMM_TTY_PORTS)
return -ENODEV;
- }
/* Check if instance already exists */
self = hashbin_lock_find(ircomm_tty, line, NULL);
@@ -405,6 +404,8 @@
* Force TTY into raw mode by default which is usually what
* we want for IrCOMM and IrLPT. This way applications will
* not have to twiddle with printcap etc.
+ *
+ * Note this is completely usafe and doesn't work properly
*/
tty->termios->c_iflag = 0;
tty->termios->c_oflag = 0;