Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6: (55 commits)
ieee1394: sbp2: code formatting around work_struct stuff
ieee1394: nodemgr: remove a kcalloc
ieee1394: conditionally export ieee1394_bus_type
ieee1394: Consolidate driver registering
ieee1394: sbp2: convert from PCI DMA to generic DMA
ieee1394: nodemgr: spaces to tabs
ieee1394: nodemgr: fix deadlock in shutdown
ieee1394: nodemgr: remove duplicate assignment
sbp2: make 1bit bitfield unsigned
ieee1394: schedule *_oui sysfs attributes for removal
ieee1394: schedule unused symbol exports for removal
ieee1394: dv1394: schedule for feature removal
ieee1394: raw1394: defer feature removal of old isoch interface
ieee1394: ohci1394: call PMac code in shutdown only for proper machines
ieee1394: ohci1394: reformat PPC_PMAC platform code
ieee1394: ohci1394: add PPC_PMAC platform code to driver probe
ieee1394: sbp2: wrap two functions into one
ieee1394: sbp2: update comment on things to do
ieee1394: sbp2: use list_move_tail()
ieee1394: sbp2: more concise names for types and variables
...
diff --git a/Documentation/feature-removal-schedule.txt b/Documentation/feature-removal-schedule.txt
index 226ecf2..46f2a55 100644
--- a/Documentation/feature-removal-schedule.txt
+++ b/Documentation/feature-removal-schedule.txt
@@ -30,11 +30,39 @@
---------------------------
What: raw1394: requests of type RAW1394_REQ_ISO_SEND, RAW1394_REQ_ISO_LISTEN
-When: November 2006
-Why: Deprecated in favour of the new ioctl-based rawiso interface, which is
- more efficient. You should really be using libraw1394 for raw1394
- access anyway.
-Who: Jody McIntyre <scjody@modernduck.com>
+When: June 2007
+Why: Deprecated in favour of the more efficient and robust rawiso interface.
+ Affected are applications which use the deprecated part of libraw1394
+ (raw1394_iso_write, raw1394_start_iso_write, raw1394_start_iso_rcv,
+ raw1394_stop_iso_rcv) or bypass libraw1394.
+Who: Dan Dennedy <dan@dennedy.org>, Stefan Richter <stefanr@s5r6.in-berlin.de>
+
+---------------------------
+
+What: dv1394 driver (CONFIG_IEEE1394_DV1394)
+When: June 2007
+Why: Replaced by raw1394 + userspace libraries, notably libiec61883. This
+ shift of application support has been indicated on www.linux1394.org
+ and developers' mailinglists for quite some time. Major applications
+ have been converted, with the exception of ffmpeg and hence xine.
+ Piped output of dvgrab2 is a partial equivalent to dv1394.
+Who: Dan Dennedy <dan@dennedy.org>, Stefan Richter <stefanr@s5r6.in-berlin.de>
+
+---------------------------
+
+What: ieee1394 core's unused exports (CONFIG_IEEE1394_EXPORT_FULL_API)
+When: January 2007
+Why: There are no projects known to use these exported symbols, except
+ dfg1394 (uses one symbol whose functionality is core-internal now).
+Who: Stefan Richter <stefanr@s5r6.in-berlin.de>
+
+---------------------------
+
+What: ieee1394's *_oui sysfs attributes (CONFIG_IEEE1394_OUI_DB)
+When: January 2007
+Files: drivers/ieee1394/: oui.db, oui2c.sh
+Why: big size, little value
+Who: Stefan Richter <stefanr@s5r6.in-berlin.de>
---------------------------
diff --git a/drivers/ieee1394/Kconfig b/drivers/ieee1394/Kconfig
index 672b92e..e7d5657 100644
--- a/drivers/ieee1394/Kconfig
+++ b/drivers/ieee1394/Kconfig
@@ -36,7 +36,7 @@
else says N.
config IEEE1394_OUI_DB
- bool "OUI Database built-in"
+ bool "OUI Database built-in (deprecated)"
depends on IEEE1394
help
If you say Y here, then an OUI list (vendor unique ID's) will be
@@ -67,16 +67,11 @@
eth1394 option below.
config IEEE1394_EXPORT_FULL_API
- bool "Export all symbols of ieee1394's API"
+ bool "Export all symbols of ieee1394's API (deprecated)"
depends on IEEE1394
default n
help
- Export all symbols of ieee1394's driver programming interface, even
- those that are not currently used by the standard IEEE 1394 drivers.
-
- This option does not affect the interface to userspace applications.
- Say Y here if you want to compile externally developed drivers that
- make extended use of ieee1394's API. It is otherwise safe to say N.
+ This option will be removed soon. Don't worry, say N.
comment "Device Drivers"
depends on IEEE1394
@@ -125,7 +120,7 @@
config IEEE1394_SBP2
tristate "SBP-2 support (Harddisks etc.)"
- depends on IEEE1394 && SCSI && (PCI || BROKEN)
+ depends on IEEE1394 && SCSI
help
This option enables you to use SBP-2 devices connected to an IEEE
1394 bus. SBP-2 devices include storage devices like harddisks and
@@ -161,17 +156,12 @@
MCAP, therefore multicast support is significantly limited.
config IEEE1394_DV1394
- tristate "OHCI-DV I/O support"
+ tristate "OHCI-DV I/O support (deprecated)"
depends on IEEE1394 && IEEE1394_OHCI1394
help
- This driver allows you to transmit and receive DV (digital video)
- streams on an OHCI-1394 card using a simple frame-oriented
- interface.
-
- The user-space API for dv1394 is documented in dv1394.h.
-
- To compile this driver as a module, say M here: the
- module will be called dv1394.
+ The dv1394 driver will be removed from Linux in a future release.
+ Its functionality is now provided by raw1394 together with libraries
+ such as libiec61883.
config IEEE1394_RAWIO
tristate "Raw IEEE1394 I/O support"
diff --git a/drivers/ieee1394/Makefile b/drivers/ieee1394/Makefile
index 6f53611..d9650d3 100644
--- a/drivers/ieee1394/Makefile
+++ b/drivers/ieee1394/Makefile
@@ -3,8 +3,11 @@
#
ieee1394-objs := ieee1394_core.o ieee1394_transactions.o hosts.o \
- highlevel.o csr.o nodemgr.o oui.o dma.o iso.o \
+ highlevel.o csr.o nodemgr.o dma.o iso.o \
csr1212.o config_roms.o
+ifdef CONFIG_IEEE1394_OUI_DB
+ieee1394-objs += oui.o
+endif
obj-$(CONFIG_IEEE1394) += ieee1394.o
obj-$(CONFIG_IEEE1394_PCILYNX) += pcilynx.o
diff --git a/drivers/ieee1394/csr.c b/drivers/ieee1394/csr.c
index ab0c80f..52ac83e 100644
--- a/drivers/ieee1394/csr.c
+++ b/drivers/ieee1394/csr.c
@@ -158,12 +158,10 @@
*/
static inline void calculate_expire(struct csr_control *csr)
{
- unsigned long usecs =
- (csr->split_timeout_hi & 0x07) * USEC_PER_SEC +
- (csr->split_timeout_lo >> 19) * 125L;
+ unsigned int usecs = (csr->split_timeout_hi & 7) * 1000000 +
+ (csr->split_timeout_lo >> 19) * 125;
- csr->expire = usecs_to_jiffies(usecs > 100000L ? usecs : 100000L);
-
+ csr->expire = usecs_to_jiffies(usecs > 100000 ? usecs : 100000);
HPSB_VERBOSE("CSR: setting expire to %lu, HZ=%u", csr->expire, HZ);
}
diff --git a/drivers/ieee1394/dv1394.c b/drivers/ieee1394/dv1394.c
index 6c72f04..1084da4 100644
--- a/drivers/ieee1394/dv1394.c
+++ b/drivers/ieee1394/dv1394.c
@@ -1536,27 +1536,20 @@
static long dv1394_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
- struct video_card *video;
+ struct video_card *video = file_to_video_card(file);
unsigned long flags;
int ret = -EINVAL;
void __user *argp = (void __user *)arg;
DECLARE_WAITQUEUE(wait, current);
- lock_kernel();
- video = file_to_video_card(file);
-
/* serialize this to prevent multi-threaded mayhem */
if (file->f_flags & O_NONBLOCK) {
- if (!mutex_trylock(&video->mtx)) {
- unlock_kernel();
+ if (!mutex_trylock(&video->mtx))
return -EAGAIN;
- }
} else {
- if (mutex_lock_interruptible(&video->mtx)) {
- unlock_kernel();
+ if (mutex_lock_interruptible(&video->mtx))
return -ERESTARTSYS;
- }
}
switch(cmd)
@@ -1780,7 +1773,6 @@
out:
mutex_unlock(&video->mtx);
- unlock_kernel();
return ret;
}
@@ -2188,12 +2180,8 @@
MODULE_DEVICE_TABLE(ieee1394, dv1394_id_table);
static struct hpsb_protocol_driver dv1394_driver = {
- .name = "DV/1394 Driver",
+ .name = "dv1394",
.id_table = dv1394_id_table,
- .driver = {
- .name = "dv1394",
- .bus = &ieee1394_bus_type,
- },
};
@@ -2587,6 +2575,10 @@
{
int ret;
+ printk(KERN_WARNING
+ "WARNING: The dv1394 driver is unsupported and will be removed "
+ "from Linux soon. Use raw1394 instead.\n");
+
cdev_init(&dv1394_cdev, &dv1394_fops);
dv1394_cdev.owner = THIS_MODULE;
kobject_set_name(&dv1394_cdev.kobj, "dv1394");
diff --git a/drivers/ieee1394/eth1394.c b/drivers/ieee1394/eth1394.c
index 27d6c64..97e5c3d 100644
--- a/drivers/ieee1394/eth1394.c
+++ b/drivers/ieee1394/eth1394.c
@@ -474,12 +474,10 @@
MODULE_DEVICE_TABLE(ieee1394, eth1394_id_table);
static struct hpsb_protocol_driver eth1394_proto_driver = {
- .name = "IPv4 over 1394 Driver",
+ .name = ETH1394_DRIVER_NAME,
.id_table = eth1394_id_table,
.update = eth1394_update,
.driver = {
- .name = ETH1394_DRIVER_NAME,
- .bus = &ieee1394_bus_type,
.probe = eth1394_probe,
.remove = eth1394_remove,
},
diff --git a/drivers/ieee1394/highlevel.h b/drivers/ieee1394/highlevel.h
index 50f2dd2..4b33011 100644
--- a/drivers/ieee1394/highlevel.h
+++ b/drivers/ieee1394/highlevel.h
@@ -24,7 +24,6 @@
/* Only the following structures are of interest to actual highlevel drivers. */
struct hpsb_highlevel {
- struct module *owner;
const char *name;
/* Any of the following pointers can legally be NULL, except for
diff --git a/drivers/ieee1394/hosts.c b/drivers/ieee1394/hosts.c
index b935e08..ee82a53 100644
--- a/drivers/ieee1394/hosts.c
+++ b/drivers/ieee1394/hosts.c
@@ -44,9 +44,10 @@
CSR_SET_BUS_INFO_GENERATION(host->csr.rom, generation);
if (csr1212_generate_csr_image(host->csr.rom) != CSR1212_SUCCESS) {
- /* CSR image creation failed, reset generation field and do not
- * issue a bus reset. */
- CSR_SET_BUS_INFO_GENERATION(host->csr.rom, host->csr.generation);
+ /* CSR image creation failed.
+ * Reset generation field and do not issue a bus reset. */
+ CSR_SET_BUS_INFO_GENERATION(host->csr.rom,
+ host->csr.generation);
return;
}
@@ -54,7 +55,8 @@
host->update_config_rom = 0;
if (host->driver->set_hw_config_rom)
- host->driver->set_hw_config_rom(host, host->csr.rom->bus_info_data);
+ host->driver->set_hw_config_rom(host,
+ host->csr.rom->bus_info_data);
host->csr.gen_timestamp[host->csr.generation] = jiffies;
hpsb_reset_bus(host, SHORT_RESET);
@@ -70,7 +72,8 @@
return -1;
}
-static int dummy_isoctl(struct hpsb_iso *iso, enum isoctl_cmd command, unsigned long arg)
+static int dummy_isoctl(struct hpsb_iso *iso, enum isoctl_cmd command,
+ unsigned long arg)
{
return -1;
}
@@ -128,10 +131,8 @@
return NULL;
h->csr.rom = csr1212_create_csr(&csr_bus_ops, CSR_BUS_INFO_SIZE, h);
- if (!h->csr.rom) {
- kfree(h);
- return NULL;
- }
+ if (!h->csr.rom)
+ goto fail;
h->hostdata = h + 1;
h->driver = drv;
@@ -151,16 +152,15 @@
init_timer(&h->timeout);
h->timeout.data = (unsigned long) h;
h->timeout.function = abort_timedouts;
- h->timeout_interval = HZ / 20; // 50ms by default
+ h->timeout_interval = HZ / 20; /* 50ms, half of minimum SPLIT_TIMEOUT */
h->topology_map = h->csr.topology_map + 3;
h->speed_map = (u8 *)(h->csr.speed_map + 2);
mutex_lock(&host_num_alloc);
-
while (nodemgr_for_each_host(&hostnum, alloc_hostnum_cb))
hostnum++;
-
+ mutex_unlock(&host_num_alloc);
h->id = hostnum;
memcpy(&h->device, &nodemgr_dev_template_host, sizeof(h->device));
@@ -171,13 +171,19 @@
h->class_dev.class = &hpsb_host_class;
snprintf(h->class_dev.class_id, BUS_ID_SIZE, "fw-host%d", h->id);
- device_register(&h->device);
- class_device_register(&h->class_dev);
+ if (device_register(&h->device))
+ goto fail;
+ if (class_device_register(&h->class_dev)) {
+ device_unregister(&h->device);
+ goto fail;
+ }
get_device(&h->device);
- mutex_unlock(&host_num_alloc);
-
return h;
+
+fail:
+ kfree(h);
+ return NULL;
}
int hpsb_add_host(struct hpsb_host *host)
@@ -229,7 +235,8 @@
if (time_before(jiffies, host->csr.gen_timestamp[next_gen] + 60 * HZ))
/* Wait 60 seconds from the last time this generation number was
* used. */
- reset_delay = (60 * HZ) + host->csr.gen_timestamp[next_gen] - jiffies;
+ reset_delay =
+ (60 * HZ) + host->csr.gen_timestamp[next_gen] - jiffies;
else
/* Wait 1 second in case some other code wants to change the
* Config ROM in the near future. */
diff --git a/drivers/ieee1394/ieee1394_core.c b/drivers/ieee1394/ieee1394_core.c
index 5fccf9f..9a48ca2 100644
--- a/drivers/ieee1394/ieee1394_core.c
+++ b/drivers/ieee1394/ieee1394_core.c
@@ -1237,10 +1237,10 @@
/** nodemgr.c **/
EXPORT_SYMBOL(hpsb_node_fill_packet);
EXPORT_SYMBOL(hpsb_node_write);
-EXPORT_SYMBOL(hpsb_register_protocol);
+EXPORT_SYMBOL(__hpsb_register_protocol);
EXPORT_SYMBOL(hpsb_unregister_protocol);
-EXPORT_SYMBOL(ieee1394_bus_type);
#ifdef CONFIG_IEEE1394_EXPORT_FULL_API
+EXPORT_SYMBOL(ieee1394_bus_type);
EXPORT_SYMBOL(nodemgr_for_each_host);
#endif
diff --git a/drivers/ieee1394/nodemgr.c b/drivers/ieee1394/nodemgr.c
index e829c93..61307ca 100644
--- a/drivers/ieee1394/nodemgr.c
+++ b/drivers/ieee1394/nodemgr.c
@@ -14,6 +14,7 @@
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/kthread.h>
+#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/freezer.h>
#include <asm/atomic.h>
@@ -67,7 +68,7 @@
{
quadlet_t q;
u8 i, *speed, old_speed, good_speed;
- int ret;
+ int error;
speed = &(ci->host->speed[NODEID_TO_NODE(ci->nodeid)]);
old_speed = *speed;
@@ -79,9 +80,9 @@
* just finished its initialization. */
for (i = IEEE1394_SPEED_100; i <= old_speed; i++) {
*speed = i;
- ret = hpsb_read(ci->host, ci->nodeid, ci->generation, addr,
- &q, sizeof(quadlet_t));
- if (ret)
+ error = hpsb_read(ci->host, ci->nodeid, ci->generation, addr,
+ &q, sizeof(quadlet_t));
+ if (error)
break;
*buffer = q;
good_speed = i;
@@ -95,19 +96,19 @@
return 0;
}
*speed = old_speed;
- return ret;
+ return error;
}
static int nodemgr_bus_read(struct csr1212_csr *csr, u64 addr, u16 length,
- void *buffer, void *__ci)
+ void *buffer, void *__ci)
{
struct nodemgr_csr_info *ci = (struct nodemgr_csr_info*)__ci;
- int i, ret;
+ int i, error;
for (i = 1; ; i++) {
- ret = hpsb_read(ci->host, ci->nodeid, ci->generation, addr,
- buffer, length);
- if (!ret) {
+ error = hpsb_read(ci->host, ci->nodeid, ci->generation, addr,
+ buffer, length);
+ if (!error) {
ci->speed_unverified = 0;
break;
}
@@ -118,14 +119,14 @@
/* The ieee1394_core guessed the node's speed capability from
* the self ID. Check whether a lower speed works. */
if (ci->speed_unverified && length == sizeof(quadlet_t)) {
- ret = nodemgr_check_speed(ci, addr, buffer);
- if (!ret)
+ error = nodemgr_check_speed(ci, addr, buffer);
+ if (!error)
break;
}
if (msleep_interruptible(334))
return -EINTR;
}
- return ret;
+ return error;
}
static int nodemgr_get_max_rom(quadlet_t *bus_info_data, void *__ci)
@@ -260,9 +261,20 @@
.release = nodemgr_release_ne,
};
+/* This dummy driver prevents the host devices from being scanned. We have no
+ * useful drivers for them yet, and there would be a deadlock possible if the
+ * driver core scans the host device while the host's low-level driver (i.e.
+ * the host's parent device) is being removed. */
+static struct device_driver nodemgr_mid_layer_driver = {
+ .bus = &ieee1394_bus_type,
+ .name = "nodemgr",
+ .owner = THIS_MODULE,
+};
+
struct device nodemgr_dev_template_host = {
.bus = &ieee1394_bus_type,
.release = nodemgr_release_host,
+ .driver = &nodemgr_mid_layer_driver,
};
@@ -307,8 +319,8 @@
return sprintf(buf, format_string, (type)driver->field);\
} \
static struct driver_attribute driver_attr_drv_##field = { \
- .attr = {.name = __stringify(field), .mode = S_IRUGO }, \
- .show = fw_drv_show_##field, \
+ .attr = {.name = __stringify(field), .mode = S_IRUGO }, \
+ .show = fw_drv_show_##field, \
};
@@ -362,7 +374,7 @@
#endif
spin_unlock_irqrestore(&hpsb_tlabel_lock, flags);
- return sprintf(buf, "0x%016llx\n", tm);
+ return sprintf(buf, "0x%016llx\n", (unsigned long long)tm);
}
static DEVICE_ATTR(tlabels_mask, S_IRUGO, fw_show_ne_tlabels_mask, NULL);
#endif /* HPSB_DEBUG_TLABELS */
@@ -374,11 +386,11 @@
int state = simple_strtoul(buf, NULL, 10);
if (state == 1) {
- down_write(&dev->bus->subsys.rwsem);
- device_release_driver(dev);
ud->ignore_driver = 1;
- up_write(&dev->bus->subsys.rwsem);
- } else if (!state)
+ down_write(&ieee1394_bus_type.subsys.rwsem);
+ device_release_driver(dev);
+ up_write(&ieee1394_bus_type.subsys.rwsem);
+ } else if (state == 0)
ud->ignore_driver = 0;
return count;
@@ -413,11 +425,14 @@
static BUS_ATTR(destroy_node, S_IWUSR | S_IRUGO, fw_get_destroy_node, fw_set_destroy_node);
-static ssize_t fw_set_rescan(struct bus_type *bus, const char *buf, size_t count)
+static ssize_t fw_set_rescan(struct bus_type *bus, const char *buf,
+ size_t count)
{
+ int error = 0;
+
if (simple_strtoul(buf, NULL, 10) == 1)
- bus_rescan_devices(&ieee1394_bus_type);
- return count;
+ error = bus_rescan_devices(&ieee1394_bus_type);
+ return error ? error : count;
}
static ssize_t fw_get_rescan(struct bus_type *bus, char *buf)
{
@@ -433,7 +448,7 @@
if (state == 1)
ignore_drivers = 1;
- else if (!state)
+ else if (state == 0)
ignore_drivers = 0;
return count;
@@ -526,7 +541,7 @@
int length = 0;
char *scratch = buf;
- driver = container_of(drv, struct hpsb_protocol_driver, driver);
+ driver = container_of(drv, struct hpsb_protocol_driver, driver);
for (id = driver->id_table; id->match_flags != 0; id++) {
int need_coma = 0;
@@ -583,7 +598,11 @@
int i;
for (i = 0; i < ARRAY_SIZE(fw_drv_attrs); i++)
- driver_create_file(drv, fw_drv_attrs[i]);
+ if (driver_create_file(drv, fw_drv_attrs[i]))
+ goto fail;
+ return;
+fail:
+ HPSB_ERR("Failed to add sysfs attribute for driver %s", driver->name);
}
@@ -603,7 +622,12 @@
int i;
for (i = 0; i < ARRAY_SIZE(fw_ne_attrs); i++)
- device_create_file(dev, fw_ne_attrs[i]);
+ if (device_create_file(dev, fw_ne_attrs[i]))
+ goto fail;
+ return;
+fail:
+ HPSB_ERR("Failed to add sysfs attribute for node %016Lx",
+ (unsigned long long)ne->guid);
}
@@ -613,11 +637,16 @@
int i;
for (i = 0; i < ARRAY_SIZE(fw_host_attrs); i++)
- device_create_file(dev, fw_host_attrs[i]);
+ if (device_create_file(dev, fw_host_attrs[i]))
+ goto fail;
+ return;
+fail:
+ HPSB_ERR("Failed to add sysfs attribute for host %d", host->id);
}
-static struct node_entry *find_entry_by_nodeid(struct hpsb_host *host, nodeid_t nodeid);
+static struct node_entry *find_entry_by_nodeid(struct hpsb_host *host,
+ nodeid_t nodeid);
static void nodemgr_update_host_dev_links(struct hpsb_host *host)
{
@@ -628,12 +657,18 @@
sysfs_remove_link(&dev->kobj, "busmgr_id");
sysfs_remove_link(&dev->kobj, "host_id");
- if ((ne = find_entry_by_nodeid(host, host->irm_id)))
- sysfs_create_link(&dev->kobj, &ne->device.kobj, "irm_id");
- if ((ne = find_entry_by_nodeid(host, host->busmgr_id)))
- sysfs_create_link(&dev->kobj, &ne->device.kobj, "busmgr_id");
- if ((ne = find_entry_by_nodeid(host, host->node_id)))
- sysfs_create_link(&dev->kobj, &ne->device.kobj, "host_id");
+ if ((ne = find_entry_by_nodeid(host, host->irm_id)) &&
+ sysfs_create_link(&dev->kobj, &ne->device.kobj, "irm_id"))
+ goto fail;
+ if ((ne = find_entry_by_nodeid(host, host->busmgr_id)) &&
+ sysfs_create_link(&dev->kobj, &ne->device.kobj, "busmgr_id"))
+ goto fail;
+ if ((ne = find_entry_by_nodeid(host, host->node_id)) &&
+ sysfs_create_link(&dev->kobj, &ne->device.kobj, "host_id"))
+ goto fail;
+ return;
+fail:
+ HPSB_ERR("Failed to update sysfs attributes for host %d", host->id);
}
static void nodemgr_create_ud_dev_files(struct unit_directory *ud)
@@ -642,32 +677,39 @@
int i;
for (i = 0; i < ARRAY_SIZE(fw_ud_attrs); i++)
- device_create_file(dev, fw_ud_attrs[i]);
-
+ if (device_create_file(dev, fw_ud_attrs[i]))
+ goto fail;
if (ud->flags & UNIT_DIRECTORY_SPECIFIER_ID)
- device_create_file(dev, &dev_attr_ud_specifier_id);
-
+ if (device_create_file(dev, &dev_attr_ud_specifier_id))
+ goto fail;
if (ud->flags & UNIT_DIRECTORY_VERSION)
- device_create_file(dev, &dev_attr_ud_version);
-
+ if (device_create_file(dev, &dev_attr_ud_version))
+ goto fail;
if (ud->flags & UNIT_DIRECTORY_VENDOR_ID) {
- device_create_file(dev, &dev_attr_ud_vendor_id);
- if (ud->vendor_name_kv)
- device_create_file(dev, &dev_attr_ud_vendor_name_kv);
+ if (device_create_file(dev, &dev_attr_ud_vendor_id))
+ goto fail;
+ if (ud->vendor_name_kv &&
+ device_create_file(dev, &dev_attr_ud_vendor_name_kv))
+ goto fail;
}
-
if (ud->flags & UNIT_DIRECTORY_MODEL_ID) {
- device_create_file(dev, &dev_attr_ud_model_id);
- if (ud->model_name_kv)
- device_create_file(dev, &dev_attr_ud_model_name_kv);
+ if (device_create_file(dev, &dev_attr_ud_model_id))
+ goto fail;
+ if (ud->model_name_kv &&
+ device_create_file(dev, &dev_attr_ud_model_name_kv))
+ goto fail;
}
+ return;
+fail:
+ HPSB_ERR("Failed to add sysfs attributes for unit %s",
+ ud->device.bus_id);
}
static int nodemgr_bus_match(struct device * dev, struct device_driver * drv)
{
- struct hpsb_protocol_driver *driver;
- struct unit_directory *ud;
+ struct hpsb_protocol_driver *driver;
+ struct unit_directory *ud;
struct ieee1394_device_id *id;
/* We only match unit directories */
@@ -675,55 +717,77 @@
return 0;
ud = container_of(dev, struct unit_directory, device);
- driver = container_of(drv, struct hpsb_protocol_driver, driver);
-
if (ud->ne->in_limbo || ud->ignore_driver)
return 0;
- for (id = driver->id_table; id->match_flags != 0; id++) {
- if ((id->match_flags & IEEE1394_MATCH_VENDOR_ID) &&
- id->vendor_id != ud->vendor_id)
- continue;
+ /* We only match drivers of type hpsb_protocol_driver */
+ if (drv == &nodemgr_mid_layer_driver)
+ return 0;
- if ((id->match_flags & IEEE1394_MATCH_MODEL_ID) &&
- id->model_id != ud->model_id)
- continue;
+ driver = container_of(drv, struct hpsb_protocol_driver, driver);
+ for (id = driver->id_table; id->match_flags != 0; id++) {
+ if ((id->match_flags & IEEE1394_MATCH_VENDOR_ID) &&
+ id->vendor_id != ud->vendor_id)
+ continue;
- if ((id->match_flags & IEEE1394_MATCH_SPECIFIER_ID) &&
- id->specifier_id != ud->specifier_id)
- continue;
+ if ((id->match_flags & IEEE1394_MATCH_MODEL_ID) &&
+ id->model_id != ud->model_id)
+ continue;
- if ((id->match_flags & IEEE1394_MATCH_VERSION) &&
- id->version != ud->version)
- continue;
+ if ((id->match_flags & IEEE1394_MATCH_SPECIFIER_ID) &&
+ id->specifier_id != ud->specifier_id)
+ continue;
+
+ if ((id->match_flags & IEEE1394_MATCH_VERSION) &&
+ id->version != ud->version)
+ continue;
return 1;
- }
+ }
return 0;
}
+static DEFINE_MUTEX(nodemgr_serialize_remove_uds);
+
static void nodemgr_remove_uds(struct node_entry *ne)
{
- struct class_device *cdev, *next;
- struct unit_directory *ud;
+ struct class_device *cdev;
+ struct unit_directory *tmp, *ud;
- list_for_each_entry_safe(cdev, next, &nodemgr_ud_class.children, node) {
- ud = container_of(cdev, struct unit_directory, class_dev);
-
- if (ud->ne != ne)
- continue;
-
+ /* Iteration over nodemgr_ud_class.children has to be protected by
+ * nodemgr_ud_class.sem, but class_device_unregister() will eventually
+ * take nodemgr_ud_class.sem too. Therefore pick out one ud at a time,
+ * release the semaphore, and then unregister the ud. Since this code
+ * may be called from other contexts besides the knodemgrds, protect the
+ * gap after release of the semaphore by nodemgr_serialize_remove_uds.
+ */
+ mutex_lock(&nodemgr_serialize_remove_uds);
+ for (;;) {
+ ud = NULL;
+ down(&nodemgr_ud_class.sem);
+ list_for_each_entry(cdev, &nodemgr_ud_class.children, node) {
+ tmp = container_of(cdev, struct unit_directory,
+ class_dev);
+ if (tmp->ne == ne) {
+ ud = tmp;
+ break;
+ }
+ }
+ up(&nodemgr_ud_class.sem);
+ if (ud == NULL)
+ break;
class_device_unregister(&ud->class_dev);
device_unregister(&ud->device);
}
+ mutex_unlock(&nodemgr_serialize_remove_uds);
}
static void nodemgr_remove_ne(struct node_entry *ne)
{
- struct device *dev = &ne->device;
+ struct device *dev;
dev = get_device(&ne->device);
if (!dev)
@@ -748,7 +812,7 @@
static void nodemgr_remove_host_dev(struct device *dev)
{
- device_for_each_child(dev, NULL, __nodemgr_remove_host_dev);
+ WARN_ON(device_for_each_child(dev, NULL, __nodemgr_remove_host_dev));
sysfs_remove_link(&dev->kobj, "irm_id");
sysfs_remove_link(&dev->kobj, "busmgr_id");
sysfs_remove_link(&dev->kobj, "host_id");
@@ -762,16 +826,16 @@
#endif
quadlet_t busoptions = be32_to_cpu(ne->csr->bus_info_data[2]);
- ne->busopt.irmc = (busoptions >> 31) & 1;
- ne->busopt.cmc = (busoptions >> 30) & 1;
- ne->busopt.isc = (busoptions >> 29) & 1;
- ne->busopt.bmc = (busoptions >> 28) & 1;
- ne->busopt.pmc = (busoptions >> 27) & 1;
- ne->busopt.cyc_clk_acc = (busoptions >> 16) & 0xff;
- ne->busopt.max_rec = 1 << (((busoptions >> 12) & 0xf) + 1);
+ ne->busopt.irmc = (busoptions >> 31) & 1;
+ ne->busopt.cmc = (busoptions >> 30) & 1;
+ ne->busopt.isc = (busoptions >> 29) & 1;
+ ne->busopt.bmc = (busoptions >> 28) & 1;
+ ne->busopt.pmc = (busoptions >> 27) & 1;
+ ne->busopt.cyc_clk_acc = (busoptions >> 16) & 0xff;
+ ne->busopt.max_rec = 1 << (((busoptions >> 12) & 0xf) + 1);
ne->busopt.max_rom = (busoptions >> 8) & 0x3;
- ne->busopt.generation = (busoptions >> 4) & 0xf;
- ne->busopt.lnkspd = busoptions & 0x7;
+ ne->busopt.generation = (busoptions >> 4) & 0xf;
+ ne->busopt.lnkspd = busoptions & 0x7;
HPSB_VERBOSE("NodeMgr: raw=0x%08x irmc=%d cmc=%d isc=%d bmc=%d pmc=%d "
"cyc_clk_acc=%d max_rec=%d max_rom=%d gen=%d lspd=%d",
@@ -792,7 +856,7 @@
ne = kzalloc(sizeof(*ne), GFP_KERNEL);
if (!ne)
- return NULL;
+ goto fail_alloc;
ne->host = host;
ne->nodeid = nodeid;
@@ -815,12 +879,15 @@
snprintf(ne->class_dev.class_id, BUS_ID_SIZE, "%016Lx",
(unsigned long long)(ne->guid));
- device_register(&ne->device);
- class_device_register(&ne->class_dev);
+ if (device_register(&ne->device))
+ goto fail_devreg;
+ if (class_device_register(&ne->class_dev))
+ goto fail_classdevreg;
get_device(&ne->device);
- if (ne->guid_vendor_oui)
- device_create_file(&ne->device, &dev_attr_ne_guid_vendor_oui);
+ if (ne->guid_vendor_oui &&
+ device_create_file(&ne->device, &dev_attr_ne_guid_vendor_oui))
+ goto fail_addoiu;
nodemgr_create_ne_dev_files(ne);
nodemgr_update_bus_options(ne);
@@ -830,17 +897,28 @@
NODE_BUS_ARGS(host, nodeid), (unsigned long long)guid);
return ne;
+
+fail_addoiu:
+ put_device(&ne->device);
+fail_classdevreg:
+ device_unregister(&ne->device);
+fail_devreg:
+ kfree(ne);
+fail_alloc:
+ HPSB_ERR("Failed to create node ID:BUS[" NODE_BUS_FMT "] GUID[%016Lx]",
+ NODE_BUS_ARGS(host, nodeid), (unsigned long long)guid);
+
+ return NULL;
}
static struct node_entry *find_entry_by_guid(u64 guid)
{
- struct class *class = &nodemgr_ne_class;
struct class_device *cdev;
struct node_entry *ne, *ret_ne = NULL;
- down_read(&class->subsys.rwsem);
- list_for_each_entry(cdev, &class->children, node) {
+ down(&nodemgr_ne_class.sem);
+ list_for_each_entry(cdev, &nodemgr_ne_class.children, node) {
ne = container_of(cdev, struct node_entry, class_dev);
if (ne->guid == guid) {
@@ -848,20 +926,20 @@
break;
}
}
- up_read(&class->subsys.rwsem);
+ up(&nodemgr_ne_class.sem);
- return ret_ne;
+ return ret_ne;
}
-static struct node_entry *find_entry_by_nodeid(struct hpsb_host *host, nodeid_t nodeid)
+static struct node_entry *find_entry_by_nodeid(struct hpsb_host *host,
+ nodeid_t nodeid)
{
- struct class *class = &nodemgr_ne_class;
struct class_device *cdev;
struct node_entry *ne, *ret_ne = NULL;
- down_read(&class->subsys.rwsem);
- list_for_each_entry(cdev, &class->children, node) {
+ down(&nodemgr_ne_class.sem);
+ list_for_each_entry(cdev, &nodemgr_ne_class.children, node) {
ne = container_of(cdev, struct node_entry, class_dev);
if (ne->host == host && ne->nodeid == nodeid) {
@@ -869,7 +947,7 @@
break;
}
}
- up_read(&class->subsys.rwsem);
+ up(&nodemgr_ne_class.sem);
return ret_ne;
}
@@ -891,13 +969,25 @@
snprintf(ud->class_dev.class_id, BUS_ID_SIZE, "%s-%u",
ne->device.bus_id, ud->id);
- device_register(&ud->device);
- class_device_register(&ud->class_dev);
+ if (device_register(&ud->device))
+ goto fail_devreg;
+ if (class_device_register(&ud->class_dev))
+ goto fail_classdevreg;
get_device(&ud->device);
- if (ud->vendor_oui)
- device_create_file(&ud->device, &dev_attr_ud_vendor_oui);
+ if (ud->vendor_oui &&
+ device_create_file(&ud->device, &dev_attr_ud_vendor_oui))
+ goto fail_addoui;
nodemgr_create_ud_dev_files(ud);
+
+ return;
+
+fail_addoui:
+ put_device(&ud->device);
+fail_classdevreg:
+ device_unregister(&ud->device);
+fail_devreg:
+ HPSB_ERR("Failed to create unit %s", ud->device.bus_id);
}
@@ -977,10 +1067,9 @@
/* Logical Unit Number */
if (kv->key.type == CSR1212_KV_TYPE_IMMEDIATE) {
if (ud->flags & UNIT_DIRECTORY_HAS_LUN) {
- ud_child = kmalloc(sizeof(*ud_child), GFP_KERNEL);
+ ud_child = kmemdup(ud, sizeof(*ud_child), GFP_KERNEL);
if (!ud_child)
goto unit_directory_error;
- memcpy(ud_child, ud, sizeof(*ud_child));
nodemgr_register_device(ne, ud_child, &ne->device);
ud_child = NULL;
@@ -1094,10 +1183,16 @@
last_key_id = kv->key.id;
}
- if (ne->vendor_oui)
- device_create_file(&ne->device, &dev_attr_ne_vendor_oui);
- if (ne->vendor_name_kv)
- device_create_file(&ne->device, &dev_attr_ne_vendor_name_kv);
+ if (ne->vendor_oui &&
+ device_create_file(&ne->device, &dev_attr_ne_vendor_oui))
+ goto fail;
+ if (ne->vendor_name_kv &&
+ device_create_file(&ne->device, &dev_attr_ne_vendor_name_kv))
+ goto fail;
+ return;
+fail:
+ HPSB_ERR("Failed to add sysfs attribute for node %016Lx",
+ (unsigned long long)ne->guid);
}
#ifdef CONFIG_HOTPLUG
@@ -1161,16 +1256,20 @@
#endif /* CONFIG_HOTPLUG */
-int hpsb_register_protocol(struct hpsb_protocol_driver *driver)
+int __hpsb_register_protocol(struct hpsb_protocol_driver *drv,
+ struct module *owner)
{
- int ret;
+ int error;
+
+ drv->driver.bus = &ieee1394_bus_type;
+ drv->driver.owner = owner;
+ drv->driver.name = drv->name;
/* This will cause a probe for devices */
- ret = driver_register(&driver->driver);
- if (!ret)
- nodemgr_create_drv_files(driver);
-
- return ret;
+ error = driver_register(&drv->driver);
+ if (!error)
+ nodemgr_create_drv_files(drv);
+ return error;
}
void hpsb_unregister_protocol(struct hpsb_protocol_driver *driver)
@@ -1298,26 +1397,25 @@
static void nodemgr_node_scan(struct host_info *hi, int generation)
{
- int count;
- struct hpsb_host *host = hi->host;
- struct selfid *sid = (struct selfid *)host->topology_map;
- nodeid_t nodeid = LOCAL_BUS;
+ int count;
+ struct hpsb_host *host = hi->host;
+ struct selfid *sid = (struct selfid *)host->topology_map;
+ nodeid_t nodeid = LOCAL_BUS;
- /* Scan each node on the bus */
- for (count = host->selfid_count; count; count--, sid++) {
- if (sid->extended)
- continue;
+ /* Scan each node on the bus */
+ for (count = host->selfid_count; count; count--, sid++) {
+ if (sid->extended)
+ continue;
- if (!sid->link_active) {
- nodeid++;
- continue;
- }
- nodemgr_node_scan_one(hi, nodeid++, generation);
- }
+ if (!sid->link_active) {
+ nodeid++;
+ continue;
+ }
+ nodemgr_node_scan_one(hi, nodeid++, generation);
+ }
}
-/* Caller needs to hold nodemgr_ud_class.subsys.rwsem as reader. */
static void nodemgr_suspend_ne(struct node_entry *ne)
{
struct class_device *cdev;
@@ -1327,21 +1425,22 @@
NODE_BUS_ARGS(ne->host, ne->nodeid), (unsigned long long)ne->guid);
ne->in_limbo = 1;
- device_create_file(&ne->device, &dev_attr_ne_in_limbo);
+ WARN_ON(device_create_file(&ne->device, &dev_attr_ne_in_limbo));
- down_write(&ne->device.bus->subsys.rwsem);
+ down(&nodemgr_ud_class.sem);
list_for_each_entry(cdev, &nodemgr_ud_class.children, node) {
ud = container_of(cdev, struct unit_directory, class_dev);
-
if (ud->ne != ne)
continue;
+ down_write(&ieee1394_bus_type.subsys.rwsem);
if (ud->device.driver &&
(!ud->device.driver->suspend ||
ud->device.driver->suspend(&ud->device, PMSG_SUSPEND)))
device_release_driver(&ud->device);
+ up_write(&ieee1394_bus_type.subsys.rwsem);
}
- up_write(&ne->device.bus->subsys.rwsem);
+ up(&nodemgr_ud_class.sem);
}
@@ -1353,45 +1452,47 @@
ne->in_limbo = 0;
device_remove_file(&ne->device, &dev_attr_ne_in_limbo);
- down_read(&nodemgr_ud_class.subsys.rwsem);
- down_read(&ne->device.bus->subsys.rwsem);
+ down(&nodemgr_ud_class.sem);
list_for_each_entry(cdev, &nodemgr_ud_class.children, node) {
ud = container_of(cdev, struct unit_directory, class_dev);
-
if (ud->ne != ne)
continue;
+ down_read(&ieee1394_bus_type.subsys.rwsem);
if (ud->device.driver && ud->device.driver->resume)
ud->device.driver->resume(&ud->device);
+ up_read(&ieee1394_bus_type.subsys.rwsem);
}
- up_read(&ne->device.bus->subsys.rwsem);
- up_read(&nodemgr_ud_class.subsys.rwsem);
+ up(&nodemgr_ud_class.sem);
HPSB_DEBUG("Node resumed: ID:BUS[" NODE_BUS_FMT "] GUID[%016Lx]",
NODE_BUS_ARGS(ne->host, ne->nodeid), (unsigned long long)ne->guid);
}
-/* Caller needs to hold nodemgr_ud_class.subsys.rwsem as reader. */
static void nodemgr_update_pdrv(struct node_entry *ne)
{
struct unit_directory *ud;
struct hpsb_protocol_driver *pdrv;
struct class_device *cdev;
+ down(&nodemgr_ud_class.sem);
list_for_each_entry(cdev, &nodemgr_ud_class.children, node) {
ud = container_of(cdev, struct unit_directory, class_dev);
- if (ud->ne != ne || !ud->device.driver)
+ if (ud->ne != ne)
continue;
- pdrv = container_of(ud->device.driver, struct hpsb_protocol_driver, driver);
-
- if (pdrv->update && pdrv->update(ud)) {
- down_write(&ud->device.bus->subsys.rwsem);
- device_release_driver(&ud->device);
- up_write(&ud->device.bus->subsys.rwsem);
+ down_write(&ieee1394_bus_type.subsys.rwsem);
+ if (ud->device.driver) {
+ pdrv = container_of(ud->device.driver,
+ struct hpsb_protocol_driver,
+ driver);
+ if (pdrv->update && pdrv->update(ud))
+ device_release_driver(&ud->device);
}
+ up_write(&ieee1394_bus_type.subsys.rwsem);
}
+ up(&nodemgr_ud_class.sem);
}
@@ -1405,7 +1506,7 @@
{
const u64 bc_addr = (CSR_REGISTER_BASE | CSR_BROADCAST_CHANNEL);
quadlet_t bc_remote, bc_local;
- int ret;
+ int error;
if (!ne->host->is_irm || ne->generation != generation ||
ne->nodeid == ne->host->node_id)
@@ -1414,16 +1515,14 @@
bc_local = cpu_to_be32(ne->host->csr.broadcast_channel);
/* Check if the register is implemented and 1394a compliant. */
- ret = hpsb_read(ne->host, ne->nodeid, generation, bc_addr, &bc_remote,
- sizeof(bc_remote));
- if (!ret && bc_remote & cpu_to_be32(0x80000000) &&
+ error = hpsb_read(ne->host, ne->nodeid, generation, bc_addr, &bc_remote,
+ sizeof(bc_remote));
+ if (!error && bc_remote & cpu_to_be32(0x80000000) &&
bc_remote != bc_local)
hpsb_node_write(ne, bc_addr, &bc_local, sizeof(bc_local));
}
-/* Caller needs to hold nodemgr_ud_class.subsys.rwsem as reader because the
- * calls to nodemgr_update_pdrv() and nodemgr_suspend_ne() here require it. */
static void nodemgr_probe_ne(struct host_info *hi, struct node_entry *ne, int generation)
{
struct device *dev;
@@ -1456,7 +1555,6 @@
static void nodemgr_node_probe(struct host_info *hi, int generation)
{
struct hpsb_host *host = hi->host;
- struct class *class = &nodemgr_ne_class;
struct class_device *cdev;
struct node_entry *ne;
@@ -1469,18 +1567,18 @@
* while probes are time-consuming. (Well, those probes need some
* improvement...) */
- down_read(&class->subsys.rwsem);
- list_for_each_entry(cdev, &class->children, node) {
+ down(&nodemgr_ne_class.sem);
+ list_for_each_entry(cdev, &nodemgr_ne_class.children, node) {
ne = container_of(cdev, struct node_entry, class_dev);
if (!ne->needs_probe)
nodemgr_probe_ne(hi, ne, generation);
}
- list_for_each_entry(cdev, &class->children, node) {
+ list_for_each_entry(cdev, &nodemgr_ne_class.children, node) {
ne = container_of(cdev, struct node_entry, class_dev);
if (ne->needs_probe)
nodemgr_probe_ne(hi, ne, generation);
}
- up_read(&class->subsys.rwsem);
+ up(&nodemgr_ne_class.sem);
/* If we had a bus reset while we were scanning the bus, it is
@@ -1498,15 +1596,14 @@
* just removed. */
if (generation == get_hpsb_generation(host))
- bus_rescan_devices(&ieee1394_bus_type);
-
- return;
+ if (bus_rescan_devices(&ieee1394_bus_type))
+ HPSB_DEBUG("bus_rescan_devices had an error");
}
static int nodemgr_send_resume_packet(struct hpsb_host *host)
{
struct hpsb_packet *packet;
- int ret = 1;
+ int error = -ENOMEM;
packet = hpsb_make_phypacket(host,
EXTPHYPACKET_TYPE_RESUME |
@@ -1514,12 +1611,12 @@
if (packet) {
packet->no_waiter = 1;
packet->generation = get_hpsb_generation(host);
- ret = hpsb_send_packet(packet);
+ error = hpsb_send_packet(packet);
}
- if (ret)
+ if (error)
HPSB_WARN("fw-host%d: Failed to broadcast resume packet",
host->id);
- return ret;
+ return error;
}
/* Perform a few high-level IRM responsibilities. */
@@ -1692,19 +1789,18 @@
int nodemgr_for_each_host(void *__data, int (*cb)(struct hpsb_host *, void *))
{
- struct class *class = &hpsb_host_class;
struct class_device *cdev;
struct hpsb_host *host;
int error = 0;
- down_read(&class->subsys.rwsem);
- list_for_each_entry(cdev, &class->children, node) {
+ down(&hpsb_host_class.sem);
+ list_for_each_entry(cdev, &hpsb_host_class.children, node) {
host = container_of(cdev, struct hpsb_host, class_dev);
if ((error = cb(host, __data)))
break;
}
- up_read(&class->subsys.rwsem);
+ up(&hpsb_host_class.sem);
return error;
}
@@ -1726,10 +1822,10 @@
void hpsb_node_fill_packet(struct node_entry *ne, struct hpsb_packet *pkt)
{
- pkt->host = ne->host;
- pkt->generation = ne->generation;
+ pkt->host = ne->host;
+ pkt->generation = ne->generation;
barrier();
- pkt->node_id = ne->nodeid;
+ pkt->node_id = ne->nodeid;
}
int hpsb_node_write(struct node_entry *ne, u64 addr,
@@ -1789,26 +1885,25 @@
int init_ieee1394_nodemgr(void)
{
- int ret;
+ int error;
- ret = class_register(&nodemgr_ne_class);
- if (ret < 0)
- return ret;
+ error = class_register(&nodemgr_ne_class);
+ if (error)
+ return error;
- ret = class_register(&nodemgr_ud_class);
- if (ret < 0) {
+ error = class_register(&nodemgr_ud_class);
+ if (error) {
class_unregister(&nodemgr_ne_class);
- return ret;
+ return error;
}
-
+ error = driver_register(&nodemgr_mid_layer_driver);
hpsb_register_highlevel(&nodemgr_highlevel);
-
return 0;
}
void cleanup_ieee1394_nodemgr(void)
{
- hpsb_unregister_highlevel(&nodemgr_highlevel);
+ hpsb_unregister_highlevel(&nodemgr_highlevel);
class_unregister(&nodemgr_ud_class);
class_unregister(&nodemgr_ne_class);
diff --git a/drivers/ieee1394/nodemgr.h b/drivers/ieee1394/nodemgr.h
index 0e1e7d9..e25cbad 100644
--- a/drivers/ieee1394/nodemgr.h
+++ b/drivers/ieee1394/nodemgr.h
@@ -144,7 +144,12 @@
struct device_driver driver;
};
-int hpsb_register_protocol(struct hpsb_protocol_driver *driver);
+int __hpsb_register_protocol(struct hpsb_protocol_driver *, struct module *);
+static inline int hpsb_register_protocol(struct hpsb_protocol_driver *driver)
+{
+ return __hpsb_register_protocol(driver, THIS_MODULE);
+}
+
void hpsb_unregister_protocol(struct hpsb_protocol_driver *driver);
static inline int hpsb_node_entry_valid(struct node_entry *ne)
diff --git a/drivers/ieee1394/ohci1394.c b/drivers/ieee1394/ohci1394.c
index eae97d8..628130a 100644
--- a/drivers/ieee1394/ohci1394.c
+++ b/drivers/ieee1394/ohci1394.c
@@ -468,7 +468,6 @@
/* Global initialization */
static void ohci_initialize(struct ti_ohci *ohci)
{
- char irq_buf[16];
quadlet_t buf;
int num_ports, i;
@@ -586,11 +585,10 @@
reg_write(ohci, OHCI1394_HCControlSet, OHCI1394_HCControl_linkEnable);
buf = reg_read(ohci, OHCI1394_Version);
- sprintf (irq_buf, "%d", ohci->dev->irq);
- PRINT(KERN_INFO, "OHCI-1394 %d.%d (PCI): IRQ=[%s] "
+ PRINT(KERN_INFO, "OHCI-1394 %d.%d (PCI): IRQ=[%d] "
"MMIO=[%llx-%llx] Max Packet=[%d] IR/IT contexts=[%d/%d]",
((((buf) >> 16) & 0xf) + (((buf) >> 20) & 0xf) * 10),
- ((((buf) >> 4) & 0xf) + ((buf) & 0xf) * 10), irq_buf,
+ ((((buf) >> 4) & 0xf) + ((buf) & 0xf) * 10), ohci->dev->irq,
(unsigned long long)pci_resource_start(ohci->dev, 0),
(unsigned long long)pci_resource_start(ohci->dev, 0) + OHCI1394_REGISTER_SIZE - 1,
ohci->max_packet_size,
@@ -3217,6 +3215,18 @@
struct ti_ohci *ohci; /* shortcut to currently handled device */
resource_size_t ohci_base;
+#ifdef CONFIG_PPC_PMAC
+ /* Necessary on some machines if ohci1394 was loaded/ unloaded before */
+ if (machine_is(powermac)) {
+ struct device_node *ofn = pci_device_to_OF_node(dev);
+
+ if (ofn) {
+ pmac_call_feature(PMAC_FTR_1394_CABLE_POWER, ofn, 0, 1);
+ pmac_call_feature(PMAC_FTR_1394_ENABLE, ofn, 0, 1);
+ }
+ }
+#endif /* CONFIG_PPC_PMAC */
+
if (pci_enable_device(dev))
FAIL(-ENXIO, "Failed to enable OHCI hardware");
pci_set_master(dev);
@@ -3505,17 +3515,14 @@
#endif
#ifdef CONFIG_PPC_PMAC
- /* On UniNorth, power down the cable and turn off the chip
- * clock when the module is removed to save power on
- * laptops. Turning it back ON is done by the arch code when
- * pci_enable_device() is called */
- {
- struct device_node* of_node;
+ /* On UniNorth, power down the cable and turn off the chip clock
+ * to save power on laptops */
+ if (machine_is(powermac)) {
+ struct device_node* ofn = pci_device_to_OF_node(ohci->dev);
- of_node = pci_device_to_OF_node(ohci->dev);
- if (of_node) {
- pmac_call_feature(PMAC_FTR_1394_ENABLE, of_node, 0, 0);
- pmac_call_feature(PMAC_FTR_1394_CABLE_POWER, of_node, 0, 0);
+ if (ofn) {
+ pmac_call_feature(PMAC_FTR_1394_ENABLE, ofn, 0, 0);
+ pmac_call_feature(PMAC_FTR_1394_CABLE_POWER, ofn, 0, 0);
}
}
#endif /* CONFIG_PPC_PMAC */
@@ -3529,56 +3536,99 @@
}
#ifdef CONFIG_PM
-static int ohci1394_pci_resume (struct pci_dev *pdev)
+static int ohci1394_pci_suspend(struct pci_dev *pdev, pm_message_t state)
{
+ int err;
+ struct ti_ohci *ohci = pci_get_drvdata(pdev);
+
+ printk(KERN_INFO "%s does not fully support suspend and resume yet\n",
+ OHCI1394_DRIVER_NAME);
+
+ if (!ohci) {
+ printk(KERN_ERR "%s: tried to suspend nonexisting host\n",
+ OHCI1394_DRIVER_NAME);
+ return -ENXIO;
+ }
+ DBGMSG("suspend called");
+
+ /* Clear the async DMA contexts and stop using the controller */
+ hpsb_bus_reset(ohci->host);
+
+ /* See ohci1394_pci_remove() for comments on this sequence */
+ reg_write(ohci, OHCI1394_ConfigROMhdr, 0);
+ reg_write(ohci, OHCI1394_BusOptions,
+ (reg_read(ohci, OHCI1394_BusOptions) & 0x0000f007) |
+ 0x00ff0000);
+ reg_write(ohci, OHCI1394_IntMaskClear, 0xffffffff);
+ reg_write(ohci, OHCI1394_IntEventClear, 0xffffffff);
+ reg_write(ohci, OHCI1394_IsoXmitIntMaskClear, 0xffffffff);
+ reg_write(ohci, OHCI1394_IsoXmitIntEventClear, 0xffffffff);
+ reg_write(ohci, OHCI1394_IsoRecvIntMaskClear, 0xffffffff);
+ reg_write(ohci, OHCI1394_IsoRecvIntEventClear, 0xffffffff);
+ set_phy_reg(ohci, 4, ~0xc0 & get_phy_reg(ohci, 4));
+ reg_write(ohci, OHCI1394_LinkControlClear, 0xffffffff);
+ ohci_devctl(ohci->host, RESET_BUS, LONG_RESET_NO_FORCE_ROOT);
+ ohci_soft_reset(ohci);
+
+ err = pci_save_state(pdev);
+ if (err) {
+ PRINT(KERN_ERR, "pci_save_state failed with %d", err);
+ return err;
+ }
+ err = pci_set_power_state(pdev, pci_choose_state(pdev, state));
+ if (err)
+ DBGMSG("pci_set_power_state failed with %d", err);
+
+/* PowerMac suspend code comes last */
+#ifdef CONFIG_PPC_PMAC
+ if (machine_is(powermac)) {
+ struct device_node *ofn = pci_device_to_OF_node(pdev);
+
+ if (ofn)
+ pmac_call_feature(PMAC_FTR_1394_ENABLE, ofn, 0, 0);
+ }
+#endif /* CONFIG_PPC_PMAC */
+
+ return 0;
+}
+
+static int ohci1394_pci_resume(struct pci_dev *pdev)
+{
+ int err;
+ struct ti_ohci *ohci = pci_get_drvdata(pdev);
+
+ if (!ohci) {
+ printk(KERN_ERR "%s: tried to resume nonexisting host\n",
+ OHCI1394_DRIVER_NAME);
+ return -ENXIO;
+ }
+ DBGMSG("resume called");
+
/* PowerMac resume code comes first */
#ifdef CONFIG_PPC_PMAC
if (machine_is(powermac)) {
- struct device_node *of_node;
+ struct device_node *ofn = pci_device_to_OF_node(pdev);
- /* Re-enable 1394 */
- of_node = pci_device_to_OF_node (pdev);
- if (of_node)
- pmac_call_feature (PMAC_FTR_1394_ENABLE, of_node, 0, 1);
+ if (ofn)
+ pmac_call_feature(PMAC_FTR_1394_ENABLE, ofn, 0, 1);
}
#endif /* CONFIG_PPC_PMAC */
pci_set_power_state(pdev, PCI_D0);
pci_restore_state(pdev);
- return pci_enable_device(pdev);
-}
-
-static int ohci1394_pci_suspend (struct pci_dev *pdev, pm_message_t state)
-{
- int err;
-
- printk(KERN_INFO "%s does not fully support suspend and resume yet\n",
- OHCI1394_DRIVER_NAME);
-
- err = pci_save_state(pdev);
+ err = pci_enable_device(pdev);
if (err) {
- printk(KERN_ERR "%s: pci_save_state failed with %d\n",
- OHCI1394_DRIVER_NAME, err);
+ PRINT(KERN_ERR, "pci_enable_device failed with %d", err);
return err;
}
- err = pci_set_power_state(pdev, pci_choose_state(pdev, state));
-#ifdef OHCI1394_DEBUG
- if (err)
- printk(KERN_DEBUG "%s: pci_set_power_state failed with %d\n",
- OHCI1394_DRIVER_NAME, err);
-#endif /* OHCI1394_DEBUG */
-/* PowerMac suspend code comes last */
-#ifdef CONFIG_PPC_PMAC
- if (machine_is(powermac)) {
- struct device_node *of_node;
-
- /* Disable 1394 */
- of_node = pci_device_to_OF_node (pdev);
- if (of_node)
- pmac_call_feature(PMAC_FTR_1394_ENABLE, of_node, 0, 0);
- }
-#endif /* CONFIG_PPC_PMAC */
+ /* See ohci1394_pci_probe() for comments on this sequence */
+ ohci_soft_reset(ohci);
+ reg_write(ohci, OHCI1394_HCControlSet, OHCI1394_HCControl_LPS);
+ reg_write(ohci, OHCI1394_IntEventClear, 0xffffffff);
+ reg_write(ohci, OHCI1394_IntMaskClear, 0xffffffff);
+ mdelay(50);
+ ohci_initialize(ohci);
return 0;
}
diff --git a/drivers/ieee1394/pcilynx.c b/drivers/ieee1394/pcilynx.c
index 9cab1d6..13a6179 100644
--- a/drivers/ieee1394/pcilynx.c
+++ b/drivers/ieee1394/pcilynx.c
@@ -1428,10 +1428,9 @@
struct i2c_algo_bit_data i2c_adapter_data;
error = -ENOMEM;
- i2c_ad = kmalloc(sizeof(*i2c_ad), GFP_KERNEL);
+ i2c_ad = kmemdup(&bit_ops, sizeof(*i2c_ad), GFP_KERNEL);
if (!i2c_ad) FAIL("failed to allocate I2C adapter memory");
- memcpy(i2c_ad, &bit_ops, sizeof(struct i2c_adapter));
i2c_adapter_data = bit_data;
i2c_ad->algo_data = &i2c_adapter_data;
i2c_adapter_data.data = lynx;
diff --git a/drivers/ieee1394/raw1394-private.h b/drivers/ieee1394/raw1394-private.h
index c7731d1..50daabf 100644
--- a/drivers/ieee1394/raw1394-private.h
+++ b/drivers/ieee1394/raw1394-private.h
@@ -27,12 +27,12 @@
struct hpsb_host *host;
- struct list_head req_pending;
- struct list_head req_complete;
+ struct list_head req_pending; /* protected by reqlists_lock */
+ struct list_head req_complete; /* protected by reqlists_lock */
spinlock_t reqlists_lock;
wait_queue_head_t wait_complete;
- struct list_head addr_list;
+ struct list_head addr_list; /* protected by host_info_lock */
u8 __user *fcp_buffer;
@@ -63,7 +63,7 @@
u8 client_transactions;
u64 recvb;
u16 rec_length;
- u8 *addr_space_buffer; /* accessed by read/write/lock */
+ u8 *addr_space_buffer; /* accessed by read/write/lock requests */
};
struct pending_request {
@@ -79,7 +79,7 @@
struct host_info {
struct list_head list;
struct hpsb_host *host;
- struct list_head file_info_list;
+ struct list_head file_info_list; /* protected by host_info_lock */
};
#endif /* IEEE1394_RAW1394_PRIVATE_H */
diff --git a/drivers/ieee1394/raw1394.c b/drivers/ieee1394/raw1394.c
index bf71e06..ad2108f 100644
--- a/drivers/ieee1394/raw1394.c
+++ b/drivers/ieee1394/raw1394.c
@@ -99,6 +99,21 @@
static void queue_complete_cb(struct pending_request *req);
+#include <asm/current.h>
+static void print_old_iso_deprecation(void)
+{
+ static pid_t p;
+
+ if (p == current->pid)
+ return;
+ p = current->pid;
+ printk(KERN_WARNING "raw1394: WARNING - Program \"%s\" uses unsupported"
+ " isochronous request types which will be removed in a next"
+ " kernel release\n", current->comm);
+ printk(KERN_WARNING "raw1394: Update your software to use libraw1394's"
+ " newer interface\n");
+}
+
static struct pending_request *__alloc_pending_request(gfp_t flags)
{
struct pending_request *req;
@@ -2292,6 +2307,7 @@
return sizeof(struct raw1394_request);
case RAW1394_REQ_ISO_SEND:
+ print_old_iso_deprecation();
return handle_iso_send(fi, req, node);
case RAW1394_REQ_ARM_REGISTER:
@@ -2310,6 +2326,7 @@
return reset_notification(fi, req);
case RAW1394_REQ_ISO_LISTEN:
+ print_old_iso_deprecation();
handle_iso_listen(fi, req);
return sizeof(struct raw1394_request);
@@ -2970,12 +2987,8 @@
MODULE_DEVICE_TABLE(ieee1394, raw1394_id_table);
static struct hpsb_protocol_driver raw1394_driver = {
- .name = "raw1394 Driver",
+ .name = "raw1394",
.id_table = raw1394_id_table,
- .driver = {
- .name = "raw1394",
- .bus = &ieee1394_bus_type,
- },
};
/******************************************************************************/
diff --git a/drivers/ieee1394/sbp2.c b/drivers/ieee1394/sbp2.c
index cd156d4..e68b80b 100644
--- a/drivers/ieee1394/sbp2.c
+++ b/drivers/ieee1394/sbp2.c
@@ -29,13 +29,26 @@
* driver. It also registers as a SCSI lower-level driver in order to accept
* SCSI commands for transport using SBP-2.
*
- * You may access any attached SBP-2 storage devices as if they were SCSI
- * devices (e.g. mount /dev/sda1, fdisk, mkfs, etc.).
+ * You may access any attached SBP-2 (usually storage devices) as regular
+ * SCSI devices. E.g. mount /dev/sda1, fdisk, mkfs, etc..
*
- * Current Issues:
+ * See http://www.t10.org/drafts.htm#sbp2 for the final draft of the SBP-2
+ * specification and for where to purchase the official standard.
*
- * - Error Handling: SCSI aborts and bus reset requests are handled somewhat
- * but the code needs additional debugging.
+ * TODO:
+ * - look into possible improvements of the SCSI error handlers
+ * - handle Unit_Characteristics.mgt_ORB_timeout and .ORB_size
+ * - handle Logical_Unit_Number.ordered
+ * - handle src == 1 in status blocks
+ * - reimplement the DMA mapping in absence of physical DMA so that
+ * bus_to_virt is no longer required
+ * - debug the handling of absent physical DMA
+ * - replace CONFIG_IEEE1394_SBP2_PHYS_DMA by automatic detection
+ * (this is easy but depends on the previous two TODO items)
+ * - make the parameter serialize_io configurable per device
+ * - move all requests to fetch agent registers into non-atomic context,
+ * replace all usages of sbp2util_node_write_no_wait by true transactions
+ * Grep for inline FIXME comments below.
*/
#include <linux/blkdev.h>
@@ -49,7 +62,6 @@
#include <linux/list.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
-#include <linux/pci.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/stat.h>
@@ -98,20 +110,20 @@
* (probably due to PCI latency/throughput issues with the part). You can
* bump down the speed if you are running into problems.
*/
-static int max_speed = IEEE1394_SPEED_MAX;
-module_param(max_speed, int, 0644);
-MODULE_PARM_DESC(max_speed, "Force max speed (3 = 800mb, 2 = 400mb, 1 = 200mb, 0 = 100mb)");
+static int sbp2_max_speed = IEEE1394_SPEED_MAX;
+module_param_named(max_speed, sbp2_max_speed, int, 0644);
+MODULE_PARM_DESC(max_speed, "Force max speed "
+ "(3 = 800Mb/s, 2 = 400Mb/s, 1 = 200Mb/s, 0 = 100Mb/s)");
/*
* Set serialize_io to 1 if you'd like only one scsi command sent
* down to us at a time (debugging). This might be necessary for very
* badly behaved sbp2 devices.
- *
- * TODO: Make this configurable per device.
*/
-static int serialize_io = 1;
-module_param(serialize_io, int, 0444);
-MODULE_PARM_DESC(serialize_io, "Serialize I/O coming from scsi drivers (default = 1, faster = 0)");
+static int sbp2_serialize_io = 1;
+module_param_named(serialize_io, sbp2_serialize_io, int, 0444);
+MODULE_PARM_DESC(serialize_io, "Serialize I/O coming from scsi drivers "
+ "(default = 1, faster = 0)");
/*
* Bump up max_sectors if you'd like to support very large sized
@@ -121,10 +133,10 @@
* the Oxsemi sbp2 chipsets have no problems supporting very large
* transfer sizes.
*/
-static int max_sectors = SBP2_MAX_SECTORS;
-module_param(max_sectors, int, 0444);
-MODULE_PARM_DESC(max_sectors, "Change max sectors per I/O supported (default = "
- __stringify(SBP2_MAX_SECTORS) ")");
+static int sbp2_max_sectors = SBP2_MAX_SECTORS;
+module_param_named(max_sectors, sbp2_max_sectors, int, 0444);
+MODULE_PARM_DESC(max_sectors, "Change max sectors per I/O supported "
+ "(default = " __stringify(SBP2_MAX_SECTORS) ")");
/*
* Exclusive login to sbp2 device? In most cases, the sbp2 driver should
@@ -139,9 +151,10 @@
* concurrent logins. Depending on firmware, four or two concurrent logins
* are possible on OXFW911 and newer Oxsemi bridges.
*/
-static int exclusive_login = 1;
-module_param(exclusive_login, int, 0644);
-MODULE_PARM_DESC(exclusive_login, "Exclusive login to sbp2 device (default = 1)");
+static int sbp2_exclusive_login = 1;
+module_param_named(exclusive_login, sbp2_exclusive_login, int, 0644);
+MODULE_PARM_DESC(exclusive_login, "Exclusive login to sbp2 device "
+ "(default = 1)");
/*
* If any of the following workarounds is required for your device to work,
@@ -179,123 +192,123 @@
", override internal blacklist = " __stringify(SBP2_WORKAROUND_OVERRIDE)
", or a combination)");
-/*
- * Export information about protocols/devices supported by this driver.
- */
-static struct ieee1394_device_id sbp2_id_table[] = {
- {
- .match_flags = IEEE1394_MATCH_SPECIFIER_ID | IEEE1394_MATCH_VERSION,
- .specifier_id = SBP2_UNIT_SPEC_ID_ENTRY & 0xffffff,
- .version = SBP2_SW_VERSION_ENTRY & 0xffffff},
- {}
-};
-MODULE_DEVICE_TABLE(ieee1394, sbp2_id_table);
-
-/*
- * Debug levels, configured via kernel config, or enable here.
- */
-
-#define CONFIG_IEEE1394_SBP2_DEBUG 0
-/* #define CONFIG_IEEE1394_SBP2_DEBUG_ORBS */
-/* #define CONFIG_IEEE1394_SBP2_DEBUG_DMA */
-/* #define CONFIG_IEEE1394_SBP2_DEBUG 1 */
-/* #define CONFIG_IEEE1394_SBP2_DEBUG 2 */
-/* #define CONFIG_IEEE1394_SBP2_PACKET_DUMP */
-
-#ifdef CONFIG_IEEE1394_SBP2_DEBUG_ORBS
-#define SBP2_ORB_DEBUG(fmt, args...) HPSB_ERR("sbp2(%s): "fmt, __FUNCTION__, ## args)
-static u32 global_outstanding_command_orbs = 0;
-#define outstanding_orb_incr global_outstanding_command_orbs++
-#define outstanding_orb_decr global_outstanding_command_orbs--
-#else
-#define SBP2_ORB_DEBUG(fmt, args...) do {} while (0)
-#define outstanding_orb_incr do {} while (0)
-#define outstanding_orb_decr do {} while (0)
-#endif
-
-#ifdef CONFIG_IEEE1394_SBP2_DEBUG_DMA
-#define SBP2_DMA_ALLOC(fmt, args...) \
- HPSB_ERR("sbp2(%s)alloc(%d): "fmt, __FUNCTION__, \
- ++global_outstanding_dmas, ## args)
-#define SBP2_DMA_FREE(fmt, args...) \
- HPSB_ERR("sbp2(%s)free(%d): "fmt, __FUNCTION__, \
- --global_outstanding_dmas, ## args)
-static u32 global_outstanding_dmas = 0;
-#else
-#define SBP2_DMA_ALLOC(fmt, args...) do {} while (0)
-#define SBP2_DMA_FREE(fmt, args...) do {} while (0)
-#endif
-
-#if CONFIG_IEEE1394_SBP2_DEBUG >= 2
-#define SBP2_DEBUG(fmt, args...) HPSB_ERR("sbp2: "fmt, ## args)
-#define SBP2_INFO(fmt, args...) HPSB_ERR("sbp2: "fmt, ## args)
-#define SBP2_NOTICE(fmt, args...) HPSB_ERR("sbp2: "fmt, ## args)
-#define SBP2_WARN(fmt, args...) HPSB_ERR("sbp2: "fmt, ## args)
-#elif CONFIG_IEEE1394_SBP2_DEBUG == 1
-#define SBP2_DEBUG(fmt, args...) HPSB_DEBUG("sbp2: "fmt, ## args)
-#define SBP2_INFO(fmt, args...) HPSB_INFO("sbp2: "fmt, ## args)
-#define SBP2_NOTICE(fmt, args...) HPSB_NOTICE("sbp2: "fmt, ## args)
-#define SBP2_WARN(fmt, args...) HPSB_WARN("sbp2: "fmt, ## args)
-#else
-#define SBP2_DEBUG(fmt, args...) do {} while (0)
-#define SBP2_INFO(fmt, args...) HPSB_INFO("sbp2: "fmt, ## args)
-#define SBP2_NOTICE(fmt, args...) HPSB_NOTICE("sbp2: "fmt, ## args)
-#define SBP2_WARN(fmt, args...) HPSB_WARN("sbp2: "fmt, ## args)
-#endif
-
-#define SBP2_ERR(fmt, args...) HPSB_ERR("sbp2: "fmt, ## args)
-#define SBP2_DEBUG_ENTER() SBP2_DEBUG("%s", __FUNCTION__)
+#define SBP2_INFO(fmt, args...) HPSB_INFO("sbp2: "fmt, ## args)
+#define SBP2_ERR(fmt, args...) HPSB_ERR("sbp2: "fmt, ## args)
/*
* Globals
*/
+static void sbp2scsi_complete_all_commands(struct sbp2_lu *, u32);
+static void sbp2scsi_complete_command(struct sbp2_lu *, u32, struct scsi_cmnd *,
+ void (*)(struct scsi_cmnd *));
+static struct sbp2_lu *sbp2_alloc_device(struct unit_directory *);
+static int sbp2_start_device(struct sbp2_lu *);
+static void sbp2_remove_device(struct sbp2_lu *);
+static int sbp2_login_device(struct sbp2_lu *);
+static int sbp2_reconnect_device(struct sbp2_lu *);
+static int sbp2_logout_device(struct sbp2_lu *);
+static void sbp2_host_reset(struct hpsb_host *);
+static int sbp2_handle_status_write(struct hpsb_host *, int, int, quadlet_t *,
+ u64, size_t, u16);
+static int sbp2_agent_reset(struct sbp2_lu *, int);
+static void sbp2_parse_unit_directory(struct sbp2_lu *,
+ struct unit_directory *);
+static int sbp2_set_busy_timeout(struct sbp2_lu *);
+static int sbp2_max_speed_and_size(struct sbp2_lu *);
-static void sbp2scsi_complete_all_commands(struct scsi_id_instance_data *scsi_id,
- u32 status);
-
-static void sbp2scsi_complete_command(struct scsi_id_instance_data *scsi_id,
- u32 scsi_status, struct scsi_cmnd *SCpnt,
- void (*done)(struct scsi_cmnd *));
-
-static struct scsi_host_template scsi_driver_template;
static const u8 sbp2_speedto_max_payload[] = { 0x7, 0x8, 0x9, 0xA, 0xB, 0xC };
-static void sbp2_host_reset(struct hpsb_host *host);
-
-static int sbp2_probe(struct device *dev);
-static int sbp2_remove(struct device *dev);
-static int sbp2_update(struct unit_directory *ud);
-
static struct hpsb_highlevel sbp2_highlevel = {
- .name = SBP2_DEVICE_NAME,
- .host_reset = sbp2_host_reset,
+ .name = SBP2_DEVICE_NAME,
+ .host_reset = sbp2_host_reset,
};
static struct hpsb_address_ops sbp2_ops = {
- .write = sbp2_handle_status_write
+ .write = sbp2_handle_status_write
};
#ifdef CONFIG_IEEE1394_SBP2_PHYS_DMA
+static int sbp2_handle_physdma_write(struct hpsb_host *, int, int, quadlet_t *,
+ u64, size_t, u16);
+static int sbp2_handle_physdma_read(struct hpsb_host *, int, quadlet_t *, u64,
+ size_t, u16);
+
static struct hpsb_address_ops sbp2_physdma_ops = {
- .read = sbp2_handle_physdma_read,
- .write = sbp2_handle_physdma_write,
+ .read = sbp2_handle_physdma_read,
+ .write = sbp2_handle_physdma_write,
};
#endif
+
+/*
+ * Interface to driver core and IEEE 1394 core
+ */
+static struct ieee1394_device_id sbp2_id_table[] = {
+ {
+ .match_flags = IEEE1394_MATCH_SPECIFIER_ID | IEEE1394_MATCH_VERSION,
+ .specifier_id = SBP2_UNIT_SPEC_ID_ENTRY & 0xffffff,
+ .version = SBP2_SW_VERSION_ENTRY & 0xffffff},
+ {}
+};
+MODULE_DEVICE_TABLE(ieee1394, sbp2_id_table);
+
+static int sbp2_probe(struct device *);
+static int sbp2_remove(struct device *);
+static int sbp2_update(struct unit_directory *);
+
static struct hpsb_protocol_driver sbp2_driver = {
- .name = "SBP2 Driver",
+ .name = SBP2_DEVICE_NAME,
.id_table = sbp2_id_table,
.update = sbp2_update,
.driver = {
- .name = SBP2_DEVICE_NAME,
- .bus = &ieee1394_bus_type,
.probe = sbp2_probe,
.remove = sbp2_remove,
},
};
+
+/*
+ * Interface to SCSI core
+ */
+static int sbp2scsi_queuecommand(struct scsi_cmnd *,
+ void (*)(struct scsi_cmnd *));
+static int sbp2scsi_abort(struct scsi_cmnd *);
+static int sbp2scsi_reset(struct scsi_cmnd *);
+static int sbp2scsi_slave_alloc(struct scsi_device *);
+static int sbp2scsi_slave_configure(struct scsi_device *);
+static void sbp2scsi_slave_destroy(struct scsi_device *);
+static ssize_t sbp2_sysfs_ieee1394_id_show(struct device *,
+ struct device_attribute *, char *);
+
+static DEVICE_ATTR(ieee1394_id, S_IRUGO, sbp2_sysfs_ieee1394_id_show, NULL);
+
+static struct device_attribute *sbp2_sysfs_sdev_attrs[] = {
+ &dev_attr_ieee1394_id,
+ NULL
+};
+
+static struct scsi_host_template sbp2_shost_template = {
+ .module = THIS_MODULE,
+ .name = "SBP-2 IEEE-1394",
+ .proc_name = SBP2_DEVICE_NAME,
+ .queuecommand = sbp2scsi_queuecommand,
+ .eh_abort_handler = sbp2scsi_abort,
+ .eh_device_reset_handler = sbp2scsi_reset,
+ .slave_alloc = sbp2scsi_slave_alloc,
+ .slave_configure = sbp2scsi_slave_configure,
+ .slave_destroy = sbp2scsi_slave_destroy,
+ .this_id = -1,
+ .sg_tablesize = SG_ALL,
+ .use_clustering = ENABLE_CLUSTERING,
+ .cmd_per_lun = SBP2_MAX_CMDS,
+ .can_queue = SBP2_MAX_CMDS,
+ .emulated = 1,
+ .sdev_attrs = sbp2_sysfs_sdev_attrs,
+};
+
+
/*
* List of devices with known bugs.
*
@@ -363,8 +376,6 @@
for (length = (length >> 2); length--; )
temp[length] = be32_to_cpu(temp[length]);
-
- return;
}
/*
@@ -376,8 +387,6 @@
for (length = (length >> 2); length--; )
temp[length] = cpu_to_be32(temp[length]);
-
- return;
}
#else /* BIG_ENDIAN */
/* Why waste the cpu cycles? */
@@ -385,344 +394,246 @@
#define sbp2util_cpu_to_be32_buffer(x,y) do {} while (0)
#endif
-#ifdef CONFIG_IEEE1394_SBP2_PACKET_DUMP
-/*
- * Debug packet dump routine. Length is in bytes.
- */
-static void sbp2util_packet_dump(void *buffer, int length, char *dump_name,
- u32 dump_phys_addr)
-{
- int i;
- unsigned char *dump = buffer;
-
- if (!dump || !length || !dump_name)
- return;
-
- if (dump_phys_addr)
- printk("[%s, 0x%x]", dump_name, dump_phys_addr);
- else
- printk("[%s]", dump_name);
- for (i = 0; i < length; i++) {
- if (i > 0x3f) {
- printk("\n ...");
- break;
- }
- if ((i & 0x3) == 0)
- printk(" ");
- if ((i & 0xf) == 0)
- printk("\n ");
- printk("%02x ", (int)dump[i]);
- }
- printk("\n");
-
- return;
-}
-#else
-#define sbp2util_packet_dump(w,x,y,z) do {} while (0)
-#endif
-
-static DECLARE_WAIT_QUEUE_HEAD(access_wq);
+static DECLARE_WAIT_QUEUE_HEAD(sbp2_access_wq);
/*
* Waits for completion of an SBP-2 access request.
* Returns nonzero if timed out or prematurely interrupted.
*/
-static int sbp2util_access_timeout(struct scsi_id_instance_data *scsi_id,
- int timeout)
+static int sbp2util_access_timeout(struct sbp2_lu *lu, int timeout)
{
- long leftover = wait_event_interruptible_timeout(
- access_wq, scsi_id->access_complete, timeout);
+ long leftover;
- scsi_id->access_complete = 0;
+ leftover = wait_event_interruptible_timeout(
+ sbp2_access_wq, lu->access_complete, timeout);
+ lu->access_complete = 0;
return leftover <= 0;
}
-/* Frees an allocated packet */
-static void sbp2_free_packet(struct hpsb_packet *packet)
+static void sbp2_free_packet(void *packet)
{
hpsb_free_tlabel(packet);
hpsb_free_packet(packet);
}
-/* This is much like hpsb_node_write(), except it ignores the response
- * subaction and returns immediately. Can be used from interrupts.
+/*
+ * This is much like hpsb_node_write(), except it ignores the response
+ * subaction and returns immediately. Can be used from atomic context.
*/
static int sbp2util_node_write_no_wait(struct node_entry *ne, u64 addr,
- quadlet_t *buffer, size_t length)
+ quadlet_t *buf, size_t len)
{
struct hpsb_packet *packet;
- packet = hpsb_make_writepacket(ne->host, ne->nodeid,
- addr, buffer, length);
+ packet = hpsb_make_writepacket(ne->host, ne->nodeid, addr, buf, len);
if (!packet)
return -ENOMEM;
- hpsb_set_packet_complete_task(packet,
- (void (*)(void *))sbp2_free_packet,
- packet);
-
+ hpsb_set_packet_complete_task(packet, sbp2_free_packet, packet);
hpsb_node_fill_packet(ne, packet);
-
if (hpsb_send_packet(packet) < 0) {
sbp2_free_packet(packet);
return -EIO;
}
-
return 0;
}
-static void sbp2util_notify_fetch_agent(struct scsi_id_instance_data *scsi_id,
- u64 offset, quadlet_t *data, size_t len)
+static void sbp2util_notify_fetch_agent(struct sbp2_lu *lu, u64 offset,
+ quadlet_t *data, size_t len)
{
- /*
- * There is a small window after a bus reset within which the node
- * entry's generation is current but the reconnect wasn't completed.
- */
- if (unlikely(atomic_read(&scsi_id->state) == SBP2LU_STATE_IN_RESET))
+ /* There is a small window after a bus reset within which the node
+ * entry's generation is current but the reconnect wasn't completed. */
+ if (unlikely(atomic_read(&lu->state) == SBP2LU_STATE_IN_RESET))
return;
- if (hpsb_node_write(scsi_id->ne,
- scsi_id->sbp2_command_block_agent_addr + offset,
+ if (hpsb_node_write(lu->ne, lu->command_block_agent_addr + offset,
data, len))
SBP2_ERR("sbp2util_notify_fetch_agent failed.");
- /*
- * Now accept new SCSI commands, unless a bus reset happended during
- * hpsb_node_write.
- */
- if (likely(atomic_read(&scsi_id->state) != SBP2LU_STATE_IN_RESET))
- scsi_unblock_requests(scsi_id->scsi_host);
+
+ /* Now accept new SCSI commands, unless a bus reset happended during
+ * hpsb_node_write. */
+ if (likely(atomic_read(&lu->state) != SBP2LU_STATE_IN_RESET))
+ scsi_unblock_requests(lu->shost);
}
static void sbp2util_write_orb_pointer(struct work_struct *work)
{
- struct scsi_id_instance_data *scsi_id =
- container_of(work, struct scsi_id_instance_data,
- protocol_work.work);
+ struct sbp2_lu *lu = container_of(work, struct sbp2_lu, protocol_work);
quadlet_t data[2];
- data[0] = ORB_SET_NODE_ID(scsi_id->hi->host->node_id);
- data[1] = scsi_id->last_orb_dma;
+ data[0] = ORB_SET_NODE_ID(lu->hi->host->node_id);
+ data[1] = lu->last_orb_dma;
sbp2util_cpu_to_be32_buffer(data, 8);
- sbp2util_notify_fetch_agent(scsi_id, SBP2_ORB_POINTER_OFFSET, data, 8);
+ sbp2util_notify_fetch_agent(lu, SBP2_ORB_POINTER_OFFSET, data, 8);
}
static void sbp2util_write_doorbell(struct work_struct *work)
{
- struct scsi_id_instance_data *scsi_id =
- container_of(work, struct scsi_id_instance_data,
- protocol_work.work);
- sbp2util_notify_fetch_agent(scsi_id, SBP2_DOORBELL_OFFSET, NULL, 4);
+ struct sbp2_lu *lu = container_of(work, struct sbp2_lu, protocol_work);
+
+ sbp2util_notify_fetch_agent(lu, SBP2_DOORBELL_OFFSET, NULL, 4);
}
-/*
- * This function is called to create a pool of command orbs used for
- * command processing. It is called when a new sbp2 device is detected.
- */
-static int sbp2util_create_command_orb_pool(struct scsi_id_instance_data *scsi_id)
+static int sbp2util_create_command_orb_pool(struct sbp2_lu *lu)
{
- struct sbp2scsi_host_info *hi = scsi_id->hi;
+ struct sbp2_fwhost_info *hi = lu->hi;
int i;
unsigned long flags, orbs;
- struct sbp2_command_info *command;
+ struct sbp2_command_info *cmd;
- orbs = serialize_io ? 2 : SBP2_MAX_CMDS;
+ orbs = sbp2_serialize_io ? 2 : SBP2_MAX_CMDS;
- spin_lock_irqsave(&scsi_id->sbp2_command_orb_lock, flags);
+ spin_lock_irqsave(&lu->cmd_orb_lock, flags);
for (i = 0; i < orbs; i++) {
- command = kzalloc(sizeof(*command), GFP_ATOMIC);
- if (!command) {
- spin_unlock_irqrestore(&scsi_id->sbp2_command_orb_lock,
- flags);
+ cmd = kzalloc(sizeof(*cmd), GFP_ATOMIC);
+ if (!cmd) {
+ spin_unlock_irqrestore(&lu->cmd_orb_lock, flags);
return -ENOMEM;
}
- command->command_orb_dma =
- pci_map_single(hi->host->pdev, &command->command_orb,
- sizeof(struct sbp2_command_orb),
- PCI_DMA_TODEVICE);
- SBP2_DMA_ALLOC("single command orb DMA");
- command->sge_dma =
- pci_map_single(hi->host->pdev,
- &command->scatter_gather_element,
- sizeof(command->scatter_gather_element),
- PCI_DMA_BIDIRECTIONAL);
- SBP2_DMA_ALLOC("scatter_gather_element");
- INIT_LIST_HEAD(&command->list);
- list_add_tail(&command->list, &scsi_id->sbp2_command_orb_completed);
+ cmd->command_orb_dma = dma_map_single(&hi->host->device,
+ &cmd->command_orb,
+ sizeof(struct sbp2_command_orb),
+ DMA_TO_DEVICE);
+ cmd->sge_dma = dma_map_single(&hi->host->device,
+ &cmd->scatter_gather_element,
+ sizeof(cmd->scatter_gather_element),
+ DMA_BIDIRECTIONAL);
+ INIT_LIST_HEAD(&cmd->list);
+ list_add_tail(&cmd->list, &lu->cmd_orb_completed);
}
- spin_unlock_irqrestore(&scsi_id->sbp2_command_orb_lock, flags);
+ spin_unlock_irqrestore(&lu->cmd_orb_lock, flags);
return 0;
}
-/*
- * This function is called to delete a pool of command orbs.
- */
-static void sbp2util_remove_command_orb_pool(struct scsi_id_instance_data *scsi_id)
+static void sbp2util_remove_command_orb_pool(struct sbp2_lu *lu)
{
- struct hpsb_host *host = scsi_id->hi->host;
+ struct hpsb_host *host = lu->hi->host;
struct list_head *lh, *next;
- struct sbp2_command_info *command;
+ struct sbp2_command_info *cmd;
unsigned long flags;
- spin_lock_irqsave(&scsi_id->sbp2_command_orb_lock, flags);
- if (!list_empty(&scsi_id->sbp2_command_orb_completed)) {
- list_for_each_safe(lh, next, &scsi_id->sbp2_command_orb_completed) {
- command = list_entry(lh, struct sbp2_command_info, list);
-
- /* Release our generic DMA's */
- pci_unmap_single(host->pdev, command->command_orb_dma,
+ spin_lock_irqsave(&lu->cmd_orb_lock, flags);
+ if (!list_empty(&lu->cmd_orb_completed))
+ list_for_each_safe(lh, next, &lu->cmd_orb_completed) {
+ cmd = list_entry(lh, struct sbp2_command_info, list);
+ dma_unmap_single(&host->device, cmd->command_orb_dma,
sizeof(struct sbp2_command_orb),
- PCI_DMA_TODEVICE);
- SBP2_DMA_FREE("single command orb DMA");
- pci_unmap_single(host->pdev, command->sge_dma,
- sizeof(command->scatter_gather_element),
- PCI_DMA_BIDIRECTIONAL);
- SBP2_DMA_FREE("scatter_gather_element");
-
- kfree(command);
+ DMA_TO_DEVICE);
+ dma_unmap_single(&host->device, cmd->sge_dma,
+ sizeof(cmd->scatter_gather_element),
+ DMA_BIDIRECTIONAL);
+ kfree(cmd);
}
- }
- spin_unlock_irqrestore(&scsi_id->sbp2_command_orb_lock, flags);
+ spin_unlock_irqrestore(&lu->cmd_orb_lock, flags);
return;
}
/*
- * This function finds the sbp2_command for a given outstanding command
- * orb.Only looks at the inuse list.
+ * Finds the sbp2_command for a given outstanding command ORB.
+ * Only looks at the in-use list.
*/
static struct sbp2_command_info *sbp2util_find_command_for_orb(
- struct scsi_id_instance_data *scsi_id, dma_addr_t orb)
+ struct sbp2_lu *lu, dma_addr_t orb)
{
- struct sbp2_command_info *command;
+ struct sbp2_command_info *cmd;
unsigned long flags;
- spin_lock_irqsave(&scsi_id->sbp2_command_orb_lock, flags);
- if (!list_empty(&scsi_id->sbp2_command_orb_inuse)) {
- list_for_each_entry(command, &scsi_id->sbp2_command_orb_inuse, list) {
- if (command->command_orb_dma == orb) {
- spin_unlock_irqrestore(&scsi_id->sbp2_command_orb_lock, flags);
- return command;
+ spin_lock_irqsave(&lu->cmd_orb_lock, flags);
+ if (!list_empty(&lu->cmd_orb_inuse))
+ list_for_each_entry(cmd, &lu->cmd_orb_inuse, list)
+ if (cmd->command_orb_dma == orb) {
+ spin_unlock_irqrestore(
+ &lu->cmd_orb_lock, flags);
+ return cmd;
}
- }
- }
- spin_unlock_irqrestore(&scsi_id->sbp2_command_orb_lock, flags);
-
- SBP2_ORB_DEBUG("could not match command orb %x", (unsigned int)orb);
-
+ spin_unlock_irqrestore(&lu->cmd_orb_lock, flags);
return NULL;
}
/*
- * This function finds the sbp2_command for a given outstanding SCpnt.
- * Only looks at the inuse list.
- * Must be called with scsi_id->sbp2_command_orb_lock held.
+ * Finds the sbp2_command for a given outstanding SCpnt.
+ * Only looks at the in-use list.
+ * Must be called with lu->cmd_orb_lock held.
*/
static struct sbp2_command_info *sbp2util_find_command_for_SCpnt(
- struct scsi_id_instance_data *scsi_id, void *SCpnt)
+ struct sbp2_lu *lu, void *SCpnt)
{
- struct sbp2_command_info *command;
+ struct sbp2_command_info *cmd;
- if (!list_empty(&scsi_id->sbp2_command_orb_inuse))
- list_for_each_entry(command, &scsi_id->sbp2_command_orb_inuse, list)
- if (command->Current_SCpnt == SCpnt)
- return command;
+ if (!list_empty(&lu->cmd_orb_inuse))
+ list_for_each_entry(cmd, &lu->cmd_orb_inuse, list)
+ if (cmd->Current_SCpnt == SCpnt)
+ return cmd;
return NULL;
}
-/*
- * This function allocates a command orb used to send a scsi command.
- */
static struct sbp2_command_info *sbp2util_allocate_command_orb(
- struct scsi_id_instance_data *scsi_id,
- struct scsi_cmnd *Current_SCpnt,
- void (*Current_done)(struct scsi_cmnd *))
+ struct sbp2_lu *lu,
+ struct scsi_cmnd *Current_SCpnt,
+ void (*Current_done)(struct scsi_cmnd *))
{
struct list_head *lh;
- struct sbp2_command_info *command = NULL;
+ struct sbp2_command_info *cmd = NULL;
unsigned long flags;
- spin_lock_irqsave(&scsi_id->sbp2_command_orb_lock, flags);
- if (!list_empty(&scsi_id->sbp2_command_orb_completed)) {
- lh = scsi_id->sbp2_command_orb_completed.next;
+ spin_lock_irqsave(&lu->cmd_orb_lock, flags);
+ if (!list_empty(&lu->cmd_orb_completed)) {
+ lh = lu->cmd_orb_completed.next;
list_del(lh);
- command = list_entry(lh, struct sbp2_command_info, list);
- command->Current_done = Current_done;
- command->Current_SCpnt = Current_SCpnt;
- list_add_tail(&command->list, &scsi_id->sbp2_command_orb_inuse);
- } else {
+ cmd = list_entry(lh, struct sbp2_command_info, list);
+ cmd->Current_done = Current_done;
+ cmd->Current_SCpnt = Current_SCpnt;
+ list_add_tail(&cmd->list, &lu->cmd_orb_inuse);
+ } else
SBP2_ERR("%s: no orbs available", __FUNCTION__);
- }
- spin_unlock_irqrestore(&scsi_id->sbp2_command_orb_lock, flags);
- return command;
-}
-
-/* Free our DMA's */
-static void sbp2util_free_command_dma(struct sbp2_command_info *command)
-{
- struct scsi_id_instance_data *scsi_id =
- (struct scsi_id_instance_data *)command->Current_SCpnt->device->host->hostdata[0];
- struct hpsb_host *host;
-
- if (!scsi_id) {
- SBP2_ERR("%s: scsi_id == NULL", __FUNCTION__);
- return;
- }
-
- host = scsi_id->ud->ne->host;
-
- if (command->cmd_dma) {
- if (command->dma_type == CMD_DMA_SINGLE) {
- pci_unmap_single(host->pdev, command->cmd_dma,
- command->dma_size, command->dma_dir);
- SBP2_DMA_FREE("single bulk");
- } else if (command->dma_type == CMD_DMA_PAGE) {
- pci_unmap_page(host->pdev, command->cmd_dma,
- command->dma_size, command->dma_dir);
- SBP2_DMA_FREE("single page");
- } /* XXX: Check for CMD_DMA_NONE bug */
- command->dma_type = CMD_DMA_NONE;
- command->cmd_dma = 0;
- }
-
- if (command->sge_buffer) {
- pci_unmap_sg(host->pdev, command->sge_buffer,
- command->dma_size, command->dma_dir);
- SBP2_DMA_FREE("scatter list");
- command->sge_buffer = NULL;
- }
+ spin_unlock_irqrestore(&lu->cmd_orb_lock, flags);
+ return cmd;
}
/*
- * This function moves a command to the completed orb list.
- * Must be called with scsi_id->sbp2_command_orb_lock held.
+ * Unmaps the DMAs of a command and moves the command to the completed ORB list.
+ * Must be called with lu->cmd_orb_lock held.
*/
-static void sbp2util_mark_command_completed(
- struct scsi_id_instance_data *scsi_id,
- struct sbp2_command_info *command)
+static void sbp2util_mark_command_completed(struct sbp2_lu *lu,
+ struct sbp2_command_info *cmd)
{
- list_del(&command->list);
- sbp2util_free_command_dma(command);
- list_add_tail(&command->list, &scsi_id->sbp2_command_orb_completed);
+ struct hpsb_host *host = lu->ud->ne->host;
+
+ if (cmd->cmd_dma) {
+ if (cmd->dma_type == CMD_DMA_SINGLE)
+ dma_unmap_single(&host->device, cmd->cmd_dma,
+ cmd->dma_size, cmd->dma_dir);
+ else if (cmd->dma_type == CMD_DMA_PAGE)
+ dma_unmap_page(&host->device, cmd->cmd_dma,
+ cmd->dma_size, cmd->dma_dir);
+ /* XXX: Check for CMD_DMA_NONE bug */
+ cmd->dma_type = CMD_DMA_NONE;
+ cmd->cmd_dma = 0;
+ }
+ if (cmd->sge_buffer) {
+ dma_unmap_sg(&host->device, cmd->sge_buffer,
+ cmd->dma_size, cmd->dma_dir);
+ cmd->sge_buffer = NULL;
+ }
+ list_move_tail(&cmd->list, &lu->cmd_orb_completed);
}
/*
- * Is scsi_id valid? Is the 1394 node still present?
+ * Is lu valid? Is the 1394 node still present?
*/
-static inline int sbp2util_node_is_available(struct scsi_id_instance_data *scsi_id)
+static inline int sbp2util_node_is_available(struct sbp2_lu *lu)
{
- return scsi_id && scsi_id->ne && !scsi_id->ne->in_limbo;
+ return lu && lu->ne && !lu->ne->in_limbo;
}
/*********************************************
* IEEE-1394 core driver stack related section
*********************************************/
-static struct scsi_id_instance_data *sbp2_alloc_device(struct unit_directory *ud);
static int sbp2_probe(struct device *dev)
{
struct unit_directory *ud;
- struct scsi_id_instance_data *scsi_id;
-
- SBP2_DEBUG_ENTER();
+ struct sbp2_lu *lu;
ud = container_of(dev, struct unit_directory, device);
@@ -731,67 +642,58 @@
if (ud->flags & UNIT_DIRECTORY_HAS_LUN_DIRECTORY)
return -ENODEV;
- scsi_id = sbp2_alloc_device(ud);
-
- if (!scsi_id)
+ lu = sbp2_alloc_device(ud);
+ if (!lu)
return -ENOMEM;
- sbp2_parse_unit_directory(scsi_id, ud);
-
- return sbp2_start_device(scsi_id);
+ sbp2_parse_unit_directory(lu, ud);
+ return sbp2_start_device(lu);
}
static int sbp2_remove(struct device *dev)
{
struct unit_directory *ud;
- struct scsi_id_instance_data *scsi_id;
+ struct sbp2_lu *lu;
struct scsi_device *sdev;
- SBP2_DEBUG_ENTER();
-
ud = container_of(dev, struct unit_directory, device);
- scsi_id = ud->device.driver_data;
- if (!scsi_id)
+ lu = ud->device.driver_data;
+ if (!lu)
return 0;
- if (scsi_id->scsi_host) {
+ if (lu->shost) {
/* Get rid of enqueued commands if there is no chance to
* send them. */
- if (!sbp2util_node_is_available(scsi_id))
- sbp2scsi_complete_all_commands(scsi_id, DID_NO_CONNECT);
- /* scsi_remove_device() will trigger shutdown functions of SCSI
+ if (!sbp2util_node_is_available(lu))
+ sbp2scsi_complete_all_commands(lu, DID_NO_CONNECT);
+ /* scsi_remove_device() may trigger shutdown functions of SCSI
* highlevel drivers which would deadlock if blocked. */
- atomic_set(&scsi_id->state, SBP2LU_STATE_IN_SHUTDOWN);
- scsi_unblock_requests(scsi_id->scsi_host);
+ atomic_set(&lu->state, SBP2LU_STATE_IN_SHUTDOWN);
+ scsi_unblock_requests(lu->shost);
}
- sdev = scsi_id->sdev;
+ sdev = lu->sdev;
if (sdev) {
- scsi_id->sdev = NULL;
+ lu->sdev = NULL;
scsi_remove_device(sdev);
}
- sbp2_logout_device(scsi_id);
- sbp2_remove_device(scsi_id);
+ sbp2_logout_device(lu);
+ sbp2_remove_device(lu);
return 0;
}
static int sbp2_update(struct unit_directory *ud)
{
- struct scsi_id_instance_data *scsi_id = ud->device.driver_data;
+ struct sbp2_lu *lu = ud->device.driver_data;
- SBP2_DEBUG_ENTER();
+ if (sbp2_reconnect_device(lu)) {
+ /* Reconnect has failed. Perhaps we didn't reconnect fast
+ * enough. Try a regular login, but first log out just in
+ * case of any weirdness. */
+ sbp2_logout_device(lu);
- if (sbp2_reconnect_device(scsi_id)) {
-
- /*
- * Ok, reconnect has failed. Perhaps we didn't
- * reconnect fast enough. Try doing a regular login, but
- * first do a logout just in case of any weirdness.
- */
- sbp2_logout_device(scsi_id);
-
- if (sbp2_login_device(scsi_id)) {
+ if (sbp2_login_device(lu)) {
/* Login failed too, just fail, and the backend
* will call our sbp2_remove for us */
SBP2_ERR("Failed to reconnect to sbp2 device!");
@@ -799,69 +701,59 @@
}
}
- /* Set max retries to something large on the device. */
- sbp2_set_busy_timeout(scsi_id);
+ sbp2_set_busy_timeout(lu);
+ sbp2_agent_reset(lu, 1);
+ sbp2_max_speed_and_size(lu);
- /* Do a SBP-2 fetch agent reset. */
- sbp2_agent_reset(scsi_id, 1);
-
- /* Get the max speed and packet size that we can use. */
- sbp2_max_speed_and_size(scsi_id);
-
- /* Complete any pending commands with busy (so they get
- * retried) and remove them from our queue
- */
- sbp2scsi_complete_all_commands(scsi_id, DID_BUS_BUSY);
+ /* Complete any pending commands with busy (so they get retried)
+ * and remove them from our queue. */
+ sbp2scsi_complete_all_commands(lu, DID_BUS_BUSY);
/* Accept new commands unless there was another bus reset in the
* meantime. */
- if (hpsb_node_entry_valid(scsi_id->ne)) {
- atomic_set(&scsi_id->state, SBP2LU_STATE_RUNNING);
- scsi_unblock_requests(scsi_id->scsi_host);
+ if (hpsb_node_entry_valid(lu->ne)) {
+ atomic_set(&lu->state, SBP2LU_STATE_RUNNING);
+ scsi_unblock_requests(lu->shost);
}
return 0;
}
-/* This functions is called by the sbp2_probe, for each new device. We now
- * allocate one scsi host for each scsi_id (unit directory). */
-static struct scsi_id_instance_data *sbp2_alloc_device(struct unit_directory *ud)
+static struct sbp2_lu *sbp2_alloc_device(struct unit_directory *ud)
{
- struct sbp2scsi_host_info *hi;
- struct Scsi_Host *scsi_host = NULL;
- struct scsi_id_instance_data *scsi_id = NULL;
+ struct sbp2_fwhost_info *hi;
+ struct Scsi_Host *shost = NULL;
+ struct sbp2_lu *lu = NULL;
- SBP2_DEBUG_ENTER();
-
- scsi_id = kzalloc(sizeof(*scsi_id), GFP_KERNEL);
- if (!scsi_id) {
- SBP2_ERR("failed to create scsi_id");
+ lu = kzalloc(sizeof(*lu), GFP_KERNEL);
+ if (!lu) {
+ SBP2_ERR("failed to create lu");
goto failed_alloc;
}
- scsi_id->ne = ud->ne;
- scsi_id->ud = ud;
- scsi_id->speed_code = IEEE1394_SPEED_100;
- scsi_id->max_payload_size = sbp2_speedto_max_payload[IEEE1394_SPEED_100];
- scsi_id->status_fifo_addr = CSR1212_INVALID_ADDR_SPACE;
- INIT_LIST_HEAD(&scsi_id->sbp2_command_orb_inuse);
- INIT_LIST_HEAD(&scsi_id->sbp2_command_orb_completed);
- INIT_LIST_HEAD(&scsi_id->scsi_list);
- spin_lock_init(&scsi_id->sbp2_command_orb_lock);
- atomic_set(&scsi_id->state, SBP2LU_STATE_RUNNING);
- INIT_DELAYED_WORK(&scsi_id->protocol_work, NULL);
+ lu->ne = ud->ne;
+ lu->ud = ud;
+ lu->speed_code = IEEE1394_SPEED_100;
+ lu->max_payload_size = sbp2_speedto_max_payload[IEEE1394_SPEED_100];
+ lu->status_fifo_addr = CSR1212_INVALID_ADDR_SPACE;
+ INIT_LIST_HEAD(&lu->cmd_orb_inuse);
+ INIT_LIST_HEAD(&lu->cmd_orb_completed);
+ INIT_LIST_HEAD(&lu->lu_list);
+ spin_lock_init(&lu->cmd_orb_lock);
+ atomic_set(&lu->state, SBP2LU_STATE_RUNNING);
+ INIT_WORK(&lu->protocol_work, NULL);
- ud->device.driver_data = scsi_id;
+ ud->device.driver_data = lu;
hi = hpsb_get_hostinfo(&sbp2_highlevel, ud->ne->host);
if (!hi) {
- hi = hpsb_create_hostinfo(&sbp2_highlevel, ud->ne->host, sizeof(*hi));
+ hi = hpsb_create_hostinfo(&sbp2_highlevel, ud->ne->host,
+ sizeof(*hi));
if (!hi) {
SBP2_ERR("failed to allocate hostinfo");
goto failed_alloc;
}
- SBP2_DEBUG("sbp2_alloc_device: allocated hostinfo");
hi->host = ud->ne->host;
- INIT_LIST_HEAD(&hi->scsi_ids);
+ INIT_LIST_HEAD(&hi->logical_units);
#ifdef CONFIG_IEEE1394_SBP2_PHYS_DMA
/* Handle data movement if physical dma is not
@@ -881,9 +773,9 @@
goto failed_alloc;
}
- scsi_id->hi = hi;
+ lu->hi = hi;
- list_add_tail(&scsi_id->scsi_list, &hi->scsi_ids);
+ list_add_tail(&lu->lu_list, &hi->logical_units);
/* Register the status FIFO address range. We could use the same FIFO
* for targets at different nodes. However we need different FIFOs per
@@ -893,302 +785,214 @@
* then be performed as unified transactions. This slightly reduces
* bandwidth usage, and some Prolific based devices seem to require it.
*/
- scsi_id->status_fifo_addr = hpsb_allocate_and_register_addrspace(
+ lu->status_fifo_addr = hpsb_allocate_and_register_addrspace(
&sbp2_highlevel, ud->ne->host, &sbp2_ops,
sizeof(struct sbp2_status_block), sizeof(quadlet_t),
ud->ne->host->low_addr_space, CSR1212_ALL_SPACE_END);
- if (scsi_id->status_fifo_addr == CSR1212_INVALID_ADDR_SPACE) {
+ if (lu->status_fifo_addr == CSR1212_INVALID_ADDR_SPACE) {
SBP2_ERR("failed to allocate status FIFO address range");
goto failed_alloc;
}
- /* Register our host with the SCSI stack. */
- scsi_host = scsi_host_alloc(&scsi_driver_template,
- sizeof(unsigned long));
- if (!scsi_host) {
+ shost = scsi_host_alloc(&sbp2_shost_template, sizeof(unsigned long));
+ if (!shost) {
SBP2_ERR("failed to register scsi host");
goto failed_alloc;
}
- scsi_host->hostdata[0] = (unsigned long)scsi_id;
+ shost->hostdata[0] = (unsigned long)lu;
- if (!scsi_add_host(scsi_host, &ud->device)) {
- scsi_id->scsi_host = scsi_host;
- return scsi_id;
+ if (!scsi_add_host(shost, &ud->device)) {
+ lu->shost = shost;
+ return lu;
}
SBP2_ERR("failed to add scsi host");
- scsi_host_put(scsi_host);
+ scsi_host_put(shost);
failed_alloc:
- sbp2_remove_device(scsi_id);
+ sbp2_remove_device(lu);
return NULL;
}
static void sbp2_host_reset(struct hpsb_host *host)
{
- struct sbp2scsi_host_info *hi;
- struct scsi_id_instance_data *scsi_id;
+ struct sbp2_fwhost_info *hi;
+ struct sbp2_lu *lu;
hi = hpsb_get_hostinfo(&sbp2_highlevel, host);
if (!hi)
return;
- list_for_each_entry(scsi_id, &hi->scsi_ids, scsi_list)
- if (likely(atomic_read(&scsi_id->state) !=
+ list_for_each_entry(lu, &hi->logical_units, lu_list)
+ if (likely(atomic_read(&lu->state) !=
SBP2LU_STATE_IN_SHUTDOWN)) {
- atomic_set(&scsi_id->state, SBP2LU_STATE_IN_RESET);
- scsi_block_requests(scsi_id->scsi_host);
+ atomic_set(&lu->state, SBP2LU_STATE_IN_RESET);
+ scsi_block_requests(lu->shost);
}
}
-/*
- * This function is where we first pull the node unique ids, and then
- * allocate memory and register a SBP-2 device.
- */
-static int sbp2_start_device(struct scsi_id_instance_data *scsi_id)
+static int sbp2_start_device(struct sbp2_lu *lu)
{
- struct sbp2scsi_host_info *hi = scsi_id->hi;
+ struct sbp2_fwhost_info *hi = lu->hi;
int error;
- SBP2_DEBUG_ENTER();
-
- /* Login FIFO DMA */
- scsi_id->login_response =
- pci_alloc_consistent(hi->host->pdev,
+ lu->login_response = dma_alloc_coherent(&hi->host->device,
sizeof(struct sbp2_login_response),
- &scsi_id->login_response_dma);
- if (!scsi_id->login_response)
+ &lu->login_response_dma, GFP_KERNEL);
+ if (!lu->login_response)
goto alloc_fail;
- SBP2_DMA_ALLOC("consistent DMA region for login FIFO");
- /* Query logins ORB DMA */
- scsi_id->query_logins_orb =
- pci_alloc_consistent(hi->host->pdev,
+ lu->query_logins_orb = dma_alloc_coherent(&hi->host->device,
sizeof(struct sbp2_query_logins_orb),
- &scsi_id->query_logins_orb_dma);
- if (!scsi_id->query_logins_orb)
+ &lu->query_logins_orb_dma, GFP_KERNEL);
+ if (!lu->query_logins_orb)
goto alloc_fail;
- SBP2_DMA_ALLOC("consistent DMA region for query logins ORB");
- /* Query logins response DMA */
- scsi_id->query_logins_response =
- pci_alloc_consistent(hi->host->pdev,
+ lu->query_logins_response = dma_alloc_coherent(&hi->host->device,
sizeof(struct sbp2_query_logins_response),
- &scsi_id->query_logins_response_dma);
- if (!scsi_id->query_logins_response)
+ &lu->query_logins_response_dma, GFP_KERNEL);
+ if (!lu->query_logins_response)
goto alloc_fail;
- SBP2_DMA_ALLOC("consistent DMA region for query logins response");
- /* Reconnect ORB DMA */
- scsi_id->reconnect_orb =
- pci_alloc_consistent(hi->host->pdev,
+ lu->reconnect_orb = dma_alloc_coherent(&hi->host->device,
sizeof(struct sbp2_reconnect_orb),
- &scsi_id->reconnect_orb_dma);
- if (!scsi_id->reconnect_orb)
+ &lu->reconnect_orb_dma, GFP_KERNEL);
+ if (!lu->reconnect_orb)
goto alloc_fail;
- SBP2_DMA_ALLOC("consistent DMA region for reconnect ORB");
- /* Logout ORB DMA */
- scsi_id->logout_orb =
- pci_alloc_consistent(hi->host->pdev,
+ lu->logout_orb = dma_alloc_coherent(&hi->host->device,
sizeof(struct sbp2_logout_orb),
- &scsi_id->logout_orb_dma);
- if (!scsi_id->logout_orb)
+ &lu->logout_orb_dma, GFP_KERNEL);
+ if (!lu->logout_orb)
goto alloc_fail;
- SBP2_DMA_ALLOC("consistent DMA region for logout ORB");
- /* Login ORB DMA */
- scsi_id->login_orb =
- pci_alloc_consistent(hi->host->pdev,
+ lu->login_orb = dma_alloc_coherent(&hi->host->device,
sizeof(struct sbp2_login_orb),
- &scsi_id->login_orb_dma);
- if (!scsi_id->login_orb)
+ &lu->login_orb_dma, GFP_KERNEL);
+ if (!lu->login_orb)
goto alloc_fail;
- SBP2_DMA_ALLOC("consistent DMA region for login ORB");
- SBP2_DEBUG("New SBP-2 device inserted, SCSI ID = %x", scsi_id->ud->id);
-
- /*
- * Create our command orb pool
- */
- if (sbp2util_create_command_orb_pool(scsi_id)) {
+ if (sbp2util_create_command_orb_pool(lu)) {
SBP2_ERR("sbp2util_create_command_orb_pool failed!");
- sbp2_remove_device(scsi_id);
+ sbp2_remove_device(lu);
return -ENOMEM;
}
- /* Schedule a timeout here. The reason is that we may be so close
- * to a bus reset, that the device is not available for logins.
- * This can happen when the bus reset is caused by the host
- * connected to the sbp2 device being removed. That host would
- * have a certain amount of time to relogin before the sbp2 device
- * allows someone else to login instead. One second makes sense. */
+ /* Wait a second before trying to log in. Previously logged in
+ * initiators need a chance to reconnect. */
if (msleep_interruptible(1000)) {
- sbp2_remove_device(scsi_id);
+ sbp2_remove_device(lu);
return -EINTR;
}
- /*
- * Login to the sbp-2 device
- */
- if (sbp2_login_device(scsi_id)) {
- /* Login failed, just remove the device. */
- sbp2_remove_device(scsi_id);
+ if (sbp2_login_device(lu)) {
+ sbp2_remove_device(lu);
return -EBUSY;
}
- /*
- * Set max retries to something large on the device
- */
- sbp2_set_busy_timeout(scsi_id);
+ sbp2_set_busy_timeout(lu);
+ sbp2_agent_reset(lu, 1);
+ sbp2_max_speed_and_size(lu);
- /*
- * Do a SBP-2 fetch agent reset
- */
- sbp2_agent_reset(scsi_id, 1);
-
- /*
- * Get the max speed and packet size that we can use
- */
- sbp2_max_speed_and_size(scsi_id);
-
- /* Add this device to the scsi layer now */
- error = scsi_add_device(scsi_id->scsi_host, 0, scsi_id->ud->id, 0);
+ error = scsi_add_device(lu->shost, 0, lu->ud->id, 0);
if (error) {
SBP2_ERR("scsi_add_device failed");
- sbp2_logout_device(scsi_id);
- sbp2_remove_device(scsi_id);
+ sbp2_logout_device(lu);
+ sbp2_remove_device(lu);
return error;
}
return 0;
alloc_fail:
- SBP2_ERR("Could not allocate memory for scsi_id");
- sbp2_remove_device(scsi_id);
+ SBP2_ERR("Could not allocate memory for lu");
+ sbp2_remove_device(lu);
return -ENOMEM;
}
-/*
- * This function removes an sbp2 device from the sbp2scsi_host_info struct.
- */
-static void sbp2_remove_device(struct scsi_id_instance_data *scsi_id)
+static void sbp2_remove_device(struct sbp2_lu *lu)
{
- struct sbp2scsi_host_info *hi;
+ struct sbp2_fwhost_info *hi;
- SBP2_DEBUG_ENTER();
-
- if (!scsi_id)
+ if (!lu)
return;
- hi = scsi_id->hi;
+ hi = lu->hi;
- /* This will remove our scsi device aswell */
- if (scsi_id->scsi_host) {
- scsi_remove_host(scsi_id->scsi_host);
- scsi_host_put(scsi_id->scsi_host);
+ if (lu->shost) {
+ scsi_remove_host(lu->shost);
+ scsi_host_put(lu->shost);
}
flush_scheduled_work();
- sbp2util_remove_command_orb_pool(scsi_id);
+ sbp2util_remove_command_orb_pool(lu);
- list_del(&scsi_id->scsi_list);
+ list_del(&lu->lu_list);
- if (scsi_id->login_response) {
- pci_free_consistent(hi->host->pdev,
+ if (lu->login_response)
+ dma_free_coherent(&hi->host->device,
sizeof(struct sbp2_login_response),
- scsi_id->login_response,
- scsi_id->login_response_dma);
- SBP2_DMA_FREE("single login FIFO");
- }
-
- if (scsi_id->login_orb) {
- pci_free_consistent(hi->host->pdev,
+ lu->login_response,
+ lu->login_response_dma);
+ if (lu->login_orb)
+ dma_free_coherent(&hi->host->device,
sizeof(struct sbp2_login_orb),
- scsi_id->login_orb,
- scsi_id->login_orb_dma);
- SBP2_DMA_FREE("single login ORB");
- }
-
- if (scsi_id->reconnect_orb) {
- pci_free_consistent(hi->host->pdev,
+ lu->login_orb,
+ lu->login_orb_dma);
+ if (lu->reconnect_orb)
+ dma_free_coherent(&hi->host->device,
sizeof(struct sbp2_reconnect_orb),
- scsi_id->reconnect_orb,
- scsi_id->reconnect_orb_dma);
- SBP2_DMA_FREE("single reconnect orb");
- }
-
- if (scsi_id->logout_orb) {
- pci_free_consistent(hi->host->pdev,
+ lu->reconnect_orb,
+ lu->reconnect_orb_dma);
+ if (lu->logout_orb)
+ dma_free_coherent(&hi->host->device,
sizeof(struct sbp2_logout_orb),
- scsi_id->logout_orb,
- scsi_id->logout_orb_dma);
- SBP2_DMA_FREE("single logout orb");
- }
-
- if (scsi_id->query_logins_orb) {
- pci_free_consistent(hi->host->pdev,
+ lu->logout_orb,
+ lu->logout_orb_dma);
+ if (lu->query_logins_orb)
+ dma_free_coherent(&hi->host->device,
sizeof(struct sbp2_query_logins_orb),
- scsi_id->query_logins_orb,
- scsi_id->query_logins_orb_dma);
- SBP2_DMA_FREE("single query logins orb");
- }
-
- if (scsi_id->query_logins_response) {
- pci_free_consistent(hi->host->pdev,
+ lu->query_logins_orb,
+ lu->query_logins_orb_dma);
+ if (lu->query_logins_response)
+ dma_free_coherent(&hi->host->device,
sizeof(struct sbp2_query_logins_response),
- scsi_id->query_logins_response,
- scsi_id->query_logins_response_dma);
- SBP2_DMA_FREE("single query logins data");
- }
+ lu->query_logins_response,
+ lu->query_logins_response_dma);
- if (scsi_id->status_fifo_addr != CSR1212_INVALID_ADDR_SPACE)
+ if (lu->status_fifo_addr != CSR1212_INVALID_ADDR_SPACE)
hpsb_unregister_addrspace(&sbp2_highlevel, hi->host,
- scsi_id->status_fifo_addr);
+ lu->status_fifo_addr);
- scsi_id->ud->device.driver_data = NULL;
+ lu->ud->device.driver_data = NULL;
if (hi)
module_put(hi->host->driver->owner);
- SBP2_DEBUG("SBP-2 device removed, SCSI ID = %d", scsi_id->ud->id);
-
- kfree(scsi_id);
+ kfree(lu);
}
#ifdef CONFIG_IEEE1394_SBP2_PHYS_DMA
/*
- * This function deals with physical dma write requests (for adapters that do not support
- * physical dma in hardware). Mostly just here for debugging...
+ * Deal with write requests on adapters which do not support physical DMA or
+ * have it switched off.
*/
static int sbp2_handle_physdma_write(struct hpsb_host *host, int nodeid,
int destid, quadlet_t *data, u64 addr,
size_t length, u16 flags)
{
-
- /*
- * Manually put the data in the right place.
- */
memcpy(bus_to_virt((u32) addr), data, length);
- sbp2util_packet_dump(data, length, "sbp2 phys dma write by device",
- (u32) addr);
return RCODE_COMPLETE;
}
/*
- * This function deals with physical dma read requests (for adapters that do not support
- * physical dma in hardware). Mostly just here for debugging...
+ * Deal with read requests on adapters which do not support physical DMA or
+ * have it switched off.
*/
static int sbp2_handle_physdma_read(struct hpsb_host *host, int nodeid,
quadlet_t *data, u64 addr, size_t length,
u16 flags)
{
-
- /*
- * Grab data from memory and send a read response.
- */
memcpy(data, bus_to_virt((u32) addr), length);
- sbp2util_packet_dump(data, length, "sbp2 phys dma read by device",
- (u32) addr);
return RCODE_COMPLETE;
}
#endif
@@ -1197,74 +1001,69 @@
* SBP-2 protocol related section
**************************************/
-/*
- * This function queries the device for the maximum concurrent logins it
- * supports.
- */
-static int sbp2_query_logins(struct scsi_id_instance_data *scsi_id)
+static int sbp2_query_logins(struct sbp2_lu *lu)
{
- struct sbp2scsi_host_info *hi = scsi_id->hi;
+ struct sbp2_fwhost_info *hi = lu->hi;
quadlet_t data[2];
int max_logins;
int active_logins;
- SBP2_DEBUG_ENTER();
+ lu->query_logins_orb->reserved1 = 0x0;
+ lu->query_logins_orb->reserved2 = 0x0;
- scsi_id->query_logins_orb->reserved1 = 0x0;
- scsi_id->query_logins_orb->reserved2 = 0x0;
+ lu->query_logins_orb->query_response_lo = lu->query_logins_response_dma;
+ lu->query_logins_orb->query_response_hi =
+ ORB_SET_NODE_ID(hi->host->node_id);
+ lu->query_logins_orb->lun_misc =
+ ORB_SET_FUNCTION(SBP2_QUERY_LOGINS_REQUEST);
+ lu->query_logins_orb->lun_misc |= ORB_SET_NOTIFY(1);
+ lu->query_logins_orb->lun_misc |= ORB_SET_LUN(lu->lun);
- scsi_id->query_logins_orb->query_response_lo = scsi_id->query_logins_response_dma;
- scsi_id->query_logins_orb->query_response_hi = ORB_SET_NODE_ID(hi->host->node_id);
+ lu->query_logins_orb->reserved_resp_length =
+ ORB_SET_QUERY_LOGINS_RESP_LENGTH(
+ sizeof(struct sbp2_query_logins_response));
- scsi_id->query_logins_orb->lun_misc = ORB_SET_FUNCTION(SBP2_QUERY_LOGINS_REQUEST);
- scsi_id->query_logins_orb->lun_misc |= ORB_SET_NOTIFY(1);
- scsi_id->query_logins_orb->lun_misc |= ORB_SET_LUN(scsi_id->sbp2_lun);
+ lu->query_logins_orb->status_fifo_hi =
+ ORB_SET_STATUS_FIFO_HI(lu->status_fifo_addr, hi->host->node_id);
+ lu->query_logins_orb->status_fifo_lo =
+ ORB_SET_STATUS_FIFO_LO(lu->status_fifo_addr);
- scsi_id->query_logins_orb->reserved_resp_length =
- ORB_SET_QUERY_LOGINS_RESP_LENGTH(sizeof(struct sbp2_query_logins_response));
+ sbp2util_cpu_to_be32_buffer(lu->query_logins_orb,
+ sizeof(struct sbp2_query_logins_orb));
- scsi_id->query_logins_orb->status_fifo_hi =
- ORB_SET_STATUS_FIFO_HI(scsi_id->status_fifo_addr, hi->host->node_id);
- scsi_id->query_logins_orb->status_fifo_lo =
- ORB_SET_STATUS_FIFO_LO(scsi_id->status_fifo_addr);
-
- sbp2util_cpu_to_be32_buffer(scsi_id->query_logins_orb, sizeof(struct sbp2_query_logins_orb));
-
- sbp2util_packet_dump(scsi_id->query_logins_orb, sizeof(struct sbp2_query_logins_orb),
- "sbp2 query logins orb", scsi_id->query_logins_orb_dma);
-
- memset(scsi_id->query_logins_response, 0, sizeof(struct sbp2_query_logins_response));
+ memset(lu->query_logins_response, 0,
+ sizeof(struct sbp2_query_logins_response));
data[0] = ORB_SET_NODE_ID(hi->host->node_id);
- data[1] = scsi_id->query_logins_orb_dma;
+ data[1] = lu->query_logins_orb_dma;
sbp2util_cpu_to_be32_buffer(data, 8);
- hpsb_node_write(scsi_id->ne, scsi_id->sbp2_management_agent_addr, data, 8);
+ hpsb_node_write(lu->ne, lu->management_agent_addr, data, 8);
- if (sbp2util_access_timeout(scsi_id, 2*HZ)) {
+ if (sbp2util_access_timeout(lu, 2*HZ)) {
SBP2_INFO("Error querying logins to SBP-2 device - timed out");
return -EIO;
}
- if (scsi_id->status_block.ORB_offset_lo != scsi_id->query_logins_orb_dma) {
+ if (lu->status_block.ORB_offset_lo != lu->query_logins_orb_dma) {
SBP2_INFO("Error querying logins to SBP-2 device - timed out");
return -EIO;
}
- if (STATUS_TEST_RDS(scsi_id->status_block.ORB_offset_hi_misc)) {
+ if (STATUS_TEST_RDS(lu->status_block.ORB_offset_hi_misc)) {
SBP2_INFO("Error querying logins to SBP-2 device - failed");
return -EIO;
}
- sbp2util_cpu_to_be32_buffer(scsi_id->query_logins_response, sizeof(struct sbp2_query_logins_response));
+ sbp2util_cpu_to_be32_buffer(lu->query_logins_response,
+ sizeof(struct sbp2_query_logins_response));
- SBP2_DEBUG("length_max_logins = %x",
- (unsigned int)scsi_id->query_logins_response->length_max_logins);
-
- max_logins = RESPONSE_GET_MAX_LOGINS(scsi_id->query_logins_response->length_max_logins);
+ max_logins = RESPONSE_GET_MAX_LOGINS(
+ lu->query_logins_response->length_max_logins);
SBP2_INFO("Maximum concurrent logins supported: %d", max_logins);
- active_logins = RESPONSE_GET_ACTIVE_LOGINS(scsi_id->query_logins_response->length_max_logins);
+ active_logins = RESPONSE_GET_ACTIVE_LOGINS(
+ lu->query_logins_response->length_max_logins);
SBP2_INFO("Number of active logins: %d", active_logins);
if (active_logins >= max_logins) {
@@ -1274,332 +1073,231 @@
return 0;
}
-/*
- * This function is called in order to login to a particular SBP-2 device,
- * after a bus reset.
- */
-static int sbp2_login_device(struct scsi_id_instance_data *scsi_id)
+static int sbp2_login_device(struct sbp2_lu *lu)
{
- struct sbp2scsi_host_info *hi = scsi_id->hi;
+ struct sbp2_fwhost_info *hi = lu->hi;
quadlet_t data[2];
- SBP2_DEBUG_ENTER();
+ if (!lu->login_orb)
+ return -EIO;
- if (!scsi_id->login_orb) {
- SBP2_DEBUG("%s: login_orb not alloc'd!", __FUNCTION__);
+ if (!sbp2_exclusive_login && sbp2_query_logins(lu)) {
+ SBP2_INFO("Device does not support any more concurrent logins");
return -EIO;
}
- if (!exclusive_login) {
- if (sbp2_query_logins(scsi_id)) {
- SBP2_INFO("Device does not support any more concurrent logins");
- return -EIO;
- }
- }
+ /* assume no password */
+ lu->login_orb->password_hi = 0;
+ lu->login_orb->password_lo = 0;
- /* Set-up login ORB, assume no password */
- scsi_id->login_orb->password_hi = 0;
- scsi_id->login_orb->password_lo = 0;
+ lu->login_orb->login_response_lo = lu->login_response_dma;
+ lu->login_orb->login_response_hi = ORB_SET_NODE_ID(hi->host->node_id);
+ lu->login_orb->lun_misc = ORB_SET_FUNCTION(SBP2_LOGIN_REQUEST);
- scsi_id->login_orb->login_response_lo = scsi_id->login_response_dma;
- scsi_id->login_orb->login_response_hi = ORB_SET_NODE_ID(hi->host->node_id);
+ /* one second reconnect time */
+ lu->login_orb->lun_misc |= ORB_SET_RECONNECT(0);
+ lu->login_orb->lun_misc |= ORB_SET_EXCLUSIVE(sbp2_exclusive_login);
+ lu->login_orb->lun_misc |= ORB_SET_NOTIFY(1);
+ lu->login_orb->lun_misc |= ORB_SET_LUN(lu->lun);
- scsi_id->login_orb->lun_misc = ORB_SET_FUNCTION(SBP2_LOGIN_REQUEST);
- scsi_id->login_orb->lun_misc |= ORB_SET_RECONNECT(0); /* One second reconnect time */
- scsi_id->login_orb->lun_misc |= ORB_SET_EXCLUSIVE(exclusive_login); /* Exclusive access to device */
- scsi_id->login_orb->lun_misc |= ORB_SET_NOTIFY(1); /* Notify us of login complete */
- scsi_id->login_orb->lun_misc |= ORB_SET_LUN(scsi_id->sbp2_lun);
-
- scsi_id->login_orb->passwd_resp_lengths =
+ lu->login_orb->passwd_resp_lengths =
ORB_SET_LOGIN_RESP_LENGTH(sizeof(struct sbp2_login_response));
- scsi_id->login_orb->status_fifo_hi =
- ORB_SET_STATUS_FIFO_HI(scsi_id->status_fifo_addr, hi->host->node_id);
- scsi_id->login_orb->status_fifo_lo =
- ORB_SET_STATUS_FIFO_LO(scsi_id->status_fifo_addr);
+ lu->login_orb->status_fifo_hi =
+ ORB_SET_STATUS_FIFO_HI(lu->status_fifo_addr, hi->host->node_id);
+ lu->login_orb->status_fifo_lo =
+ ORB_SET_STATUS_FIFO_LO(lu->status_fifo_addr);
- sbp2util_cpu_to_be32_buffer(scsi_id->login_orb, sizeof(struct sbp2_login_orb));
+ sbp2util_cpu_to_be32_buffer(lu->login_orb,
+ sizeof(struct sbp2_login_orb));
- sbp2util_packet_dump(scsi_id->login_orb, sizeof(struct sbp2_login_orb),
- "sbp2 login orb", scsi_id->login_orb_dma);
-
- memset(scsi_id->login_response, 0, sizeof(struct sbp2_login_response));
+ memset(lu->login_response, 0, sizeof(struct sbp2_login_response));
data[0] = ORB_SET_NODE_ID(hi->host->node_id);
- data[1] = scsi_id->login_orb_dma;
+ data[1] = lu->login_orb_dma;
sbp2util_cpu_to_be32_buffer(data, 8);
- hpsb_node_write(scsi_id->ne, scsi_id->sbp2_management_agent_addr, data, 8);
+ hpsb_node_write(lu->ne, lu->management_agent_addr, data, 8);
- /*
- * Wait for login status (up to 20 seconds)...
- */
- if (sbp2util_access_timeout(scsi_id, 20*HZ)) {
+ /* wait up to 20 seconds for login status */
+ if (sbp2util_access_timeout(lu, 20*HZ)) {
SBP2_ERR("Error logging into SBP-2 device - timed out");
return -EIO;
}
- /*
- * Sanity. Make sure status returned matches login orb.
- */
- if (scsi_id->status_block.ORB_offset_lo != scsi_id->login_orb_dma) {
+ /* make sure that the returned status matches the login ORB */
+ if (lu->status_block.ORB_offset_lo != lu->login_orb_dma) {
SBP2_ERR("Error logging into SBP-2 device - timed out");
return -EIO;
}
- if (STATUS_TEST_RDS(scsi_id->status_block.ORB_offset_hi_misc)) {
+ if (STATUS_TEST_RDS(lu->status_block.ORB_offset_hi_misc)) {
SBP2_ERR("Error logging into SBP-2 device - failed");
return -EIO;
}
- /*
- * Byte swap the login response, for use when reconnecting or
- * logging out.
- */
- sbp2util_cpu_to_be32_buffer(scsi_id->login_response, sizeof(struct sbp2_login_response));
-
- /*
- * Grab our command block agent address from the login response.
- */
- SBP2_DEBUG("command_block_agent_hi = %x",
- (unsigned int)scsi_id->login_response->command_block_agent_hi);
- SBP2_DEBUG("command_block_agent_lo = %x",
- (unsigned int)scsi_id->login_response->command_block_agent_lo);
-
- scsi_id->sbp2_command_block_agent_addr =
- ((u64)scsi_id->login_response->command_block_agent_hi) << 32;
- scsi_id->sbp2_command_block_agent_addr |= ((u64)scsi_id->login_response->command_block_agent_lo);
- scsi_id->sbp2_command_block_agent_addr &= 0x0000ffffffffffffULL;
+ sbp2util_cpu_to_be32_buffer(lu->login_response,
+ sizeof(struct sbp2_login_response));
+ lu->command_block_agent_addr =
+ ((u64)lu->login_response->command_block_agent_hi) << 32;
+ lu->command_block_agent_addr |=
+ ((u64)lu->login_response->command_block_agent_lo);
+ lu->command_block_agent_addr &= 0x0000ffffffffffffULL;
SBP2_INFO("Logged into SBP-2 device");
return 0;
}
-/*
- * This function is called in order to logout from a particular SBP-2
- * device, usually called during driver unload.
- */
-static int sbp2_logout_device(struct scsi_id_instance_data *scsi_id)
+static int sbp2_logout_device(struct sbp2_lu *lu)
{
- struct sbp2scsi_host_info *hi = scsi_id->hi;
+ struct sbp2_fwhost_info *hi = lu->hi;
quadlet_t data[2];
int error;
- SBP2_DEBUG_ENTER();
+ lu->logout_orb->reserved1 = 0x0;
+ lu->logout_orb->reserved2 = 0x0;
+ lu->logout_orb->reserved3 = 0x0;
+ lu->logout_orb->reserved4 = 0x0;
- /*
- * Set-up logout ORB
- */
- scsi_id->logout_orb->reserved1 = 0x0;
- scsi_id->logout_orb->reserved2 = 0x0;
- scsi_id->logout_orb->reserved3 = 0x0;
- scsi_id->logout_orb->reserved4 = 0x0;
+ lu->logout_orb->login_ID_misc = ORB_SET_FUNCTION(SBP2_LOGOUT_REQUEST);
+ lu->logout_orb->login_ID_misc |=
+ ORB_SET_LOGIN_ID(lu->login_response->length_login_ID);
+ lu->logout_orb->login_ID_misc |= ORB_SET_NOTIFY(1);
- scsi_id->logout_orb->login_ID_misc = ORB_SET_FUNCTION(SBP2_LOGOUT_REQUEST);
- scsi_id->logout_orb->login_ID_misc |= ORB_SET_LOGIN_ID(scsi_id->login_response->length_login_ID);
+ lu->logout_orb->reserved5 = 0x0;
+ lu->logout_orb->status_fifo_hi =
+ ORB_SET_STATUS_FIFO_HI(lu->status_fifo_addr, hi->host->node_id);
+ lu->logout_orb->status_fifo_lo =
+ ORB_SET_STATUS_FIFO_LO(lu->status_fifo_addr);
- /* Notify us when complete */
- scsi_id->logout_orb->login_ID_misc |= ORB_SET_NOTIFY(1);
+ sbp2util_cpu_to_be32_buffer(lu->logout_orb,
+ sizeof(struct sbp2_logout_orb));
- scsi_id->logout_orb->reserved5 = 0x0;
- scsi_id->logout_orb->status_fifo_hi =
- ORB_SET_STATUS_FIFO_HI(scsi_id->status_fifo_addr, hi->host->node_id);
- scsi_id->logout_orb->status_fifo_lo =
- ORB_SET_STATUS_FIFO_LO(scsi_id->status_fifo_addr);
-
- /*
- * Byte swap ORB if necessary
- */
- sbp2util_cpu_to_be32_buffer(scsi_id->logout_orb, sizeof(struct sbp2_logout_orb));
-
- sbp2util_packet_dump(scsi_id->logout_orb, sizeof(struct sbp2_logout_orb),
- "sbp2 logout orb", scsi_id->logout_orb_dma);
-
- /*
- * Ok, let's write to the target's management agent register
- */
data[0] = ORB_SET_NODE_ID(hi->host->node_id);
- data[1] = scsi_id->logout_orb_dma;
+ data[1] = lu->logout_orb_dma;
sbp2util_cpu_to_be32_buffer(data, 8);
- error = hpsb_node_write(scsi_id->ne,
- scsi_id->sbp2_management_agent_addr, data, 8);
+ error = hpsb_node_write(lu->ne, lu->management_agent_addr, data, 8);
if (error)
return error;
- /* Wait for device to logout...1 second. */
- if (sbp2util_access_timeout(scsi_id, HZ))
+ /* wait up to 1 second for the device to complete logout */
+ if (sbp2util_access_timeout(lu, HZ))
return -EIO;
SBP2_INFO("Logged out of SBP-2 device");
return 0;
}
-/*
- * This function is called in order to reconnect to a particular SBP-2
- * device, after a bus reset.
- */
-static int sbp2_reconnect_device(struct scsi_id_instance_data *scsi_id)
+static int sbp2_reconnect_device(struct sbp2_lu *lu)
{
- struct sbp2scsi_host_info *hi = scsi_id->hi;
+ struct sbp2_fwhost_info *hi = lu->hi;
quadlet_t data[2];
int error;
- SBP2_DEBUG_ENTER();
+ lu->reconnect_orb->reserved1 = 0x0;
+ lu->reconnect_orb->reserved2 = 0x0;
+ lu->reconnect_orb->reserved3 = 0x0;
+ lu->reconnect_orb->reserved4 = 0x0;
- /*
- * Set-up reconnect ORB
- */
- scsi_id->reconnect_orb->reserved1 = 0x0;
- scsi_id->reconnect_orb->reserved2 = 0x0;
- scsi_id->reconnect_orb->reserved3 = 0x0;
- scsi_id->reconnect_orb->reserved4 = 0x0;
+ lu->reconnect_orb->login_ID_misc =
+ ORB_SET_FUNCTION(SBP2_RECONNECT_REQUEST);
+ lu->reconnect_orb->login_ID_misc |=
+ ORB_SET_LOGIN_ID(lu->login_response->length_login_ID);
+ lu->reconnect_orb->login_ID_misc |= ORB_SET_NOTIFY(1);
- scsi_id->reconnect_orb->login_ID_misc = ORB_SET_FUNCTION(SBP2_RECONNECT_REQUEST);
- scsi_id->reconnect_orb->login_ID_misc |=
- ORB_SET_LOGIN_ID(scsi_id->login_response->length_login_ID);
+ lu->reconnect_orb->reserved5 = 0x0;
+ lu->reconnect_orb->status_fifo_hi =
+ ORB_SET_STATUS_FIFO_HI(lu->status_fifo_addr, hi->host->node_id);
+ lu->reconnect_orb->status_fifo_lo =
+ ORB_SET_STATUS_FIFO_LO(lu->status_fifo_addr);
- /* Notify us when complete */
- scsi_id->reconnect_orb->login_ID_misc |= ORB_SET_NOTIFY(1);
-
- scsi_id->reconnect_orb->reserved5 = 0x0;
- scsi_id->reconnect_orb->status_fifo_hi =
- ORB_SET_STATUS_FIFO_HI(scsi_id->status_fifo_addr, hi->host->node_id);
- scsi_id->reconnect_orb->status_fifo_lo =
- ORB_SET_STATUS_FIFO_LO(scsi_id->status_fifo_addr);
-
- /*
- * Byte swap ORB if necessary
- */
- sbp2util_cpu_to_be32_buffer(scsi_id->reconnect_orb, sizeof(struct sbp2_reconnect_orb));
-
- sbp2util_packet_dump(scsi_id->reconnect_orb, sizeof(struct sbp2_reconnect_orb),
- "sbp2 reconnect orb", scsi_id->reconnect_orb_dma);
+ sbp2util_cpu_to_be32_buffer(lu->reconnect_orb,
+ sizeof(struct sbp2_reconnect_orb));
data[0] = ORB_SET_NODE_ID(hi->host->node_id);
- data[1] = scsi_id->reconnect_orb_dma;
+ data[1] = lu->reconnect_orb_dma;
sbp2util_cpu_to_be32_buffer(data, 8);
- error = hpsb_node_write(scsi_id->ne,
- scsi_id->sbp2_management_agent_addr, data, 8);
+ error = hpsb_node_write(lu->ne, lu->management_agent_addr, data, 8);
if (error)
return error;
- /*
- * Wait for reconnect status (up to 1 second)...
- */
- if (sbp2util_access_timeout(scsi_id, HZ)) {
+ /* wait up to 1 second for reconnect status */
+ if (sbp2util_access_timeout(lu, HZ)) {
SBP2_ERR("Error reconnecting to SBP-2 device - timed out");
return -EIO;
}
- /*
- * Sanity. Make sure status returned matches reconnect orb.
- */
- if (scsi_id->status_block.ORB_offset_lo != scsi_id->reconnect_orb_dma) {
+ /* make sure that the returned status matches the reconnect ORB */
+ if (lu->status_block.ORB_offset_lo != lu->reconnect_orb_dma) {
SBP2_ERR("Error reconnecting to SBP-2 device - timed out");
return -EIO;
}
- if (STATUS_TEST_RDS(scsi_id->status_block.ORB_offset_hi_misc)) {
+ if (STATUS_TEST_RDS(lu->status_block.ORB_offset_hi_misc)) {
SBP2_ERR("Error reconnecting to SBP-2 device - failed");
return -EIO;
}
- HPSB_DEBUG("Reconnected to SBP-2 device");
+ SBP2_INFO("Reconnected to SBP-2 device");
return 0;
}
/*
- * This function is called in order to set the busy timeout (number of
- * retries to attempt) on the sbp2 device.
+ * Set the target node's Single Phase Retry limit. Affects the target's retry
+ * behaviour if our node is too busy to accept requests.
*/
-static int sbp2_set_busy_timeout(struct scsi_id_instance_data *scsi_id)
+static int sbp2_set_busy_timeout(struct sbp2_lu *lu)
{
quadlet_t data;
- SBP2_DEBUG_ENTER();
-
data = cpu_to_be32(SBP2_BUSY_TIMEOUT_VALUE);
- if (hpsb_node_write(scsi_id->ne, SBP2_BUSY_TIMEOUT_ADDRESS, &data, 4))
+ if (hpsb_node_write(lu->ne, SBP2_BUSY_TIMEOUT_ADDRESS, &data, 4))
SBP2_ERR("%s error", __FUNCTION__);
return 0;
}
-/*
- * This function is called to parse sbp2 device's config rom unit
- * directory. Used to determine things like sbp2 management agent offset,
- * and command set used (SCSI or RBC).
- */
-static void sbp2_parse_unit_directory(struct scsi_id_instance_data *scsi_id,
+static void sbp2_parse_unit_directory(struct sbp2_lu *lu,
struct unit_directory *ud)
{
struct csr1212_keyval *kv;
struct csr1212_dentry *dentry;
u64 management_agent_addr;
- u32 command_set_spec_id, command_set, unit_characteristics,
- firmware_revision;
+ u32 unit_characteristics, firmware_revision;
unsigned workarounds;
int i;
- SBP2_DEBUG_ENTER();
+ management_agent_addr = 0;
+ unit_characteristics = 0;
+ firmware_revision = 0;
- management_agent_addr = 0x0;
- command_set_spec_id = 0x0;
- command_set = 0x0;
- unit_characteristics = 0x0;
- firmware_revision = 0x0;
-
- /* Handle different fields in the unit directory, based on keys */
csr1212_for_each_dir_entry(ud->ne->csr, kv, ud->ud_kv, dentry) {
switch (kv->key.id) {
case CSR1212_KV_ID_DEPENDENT_INFO:
- if (kv->key.type == CSR1212_KV_TYPE_CSR_OFFSET) {
- /* Save off the management agent address */
+ if (kv->key.type == CSR1212_KV_TYPE_CSR_OFFSET)
management_agent_addr =
CSR1212_REGISTER_SPACE_BASE +
(kv->value.csr_offset << 2);
- SBP2_DEBUG("sbp2_management_agent_addr = %x",
- (unsigned int)management_agent_addr);
- } else if (kv->key.type == CSR1212_KV_TYPE_IMMEDIATE) {
- scsi_id->sbp2_lun =
- ORB_SET_LUN(kv->value.immediate);
- }
- break;
-
- case SBP2_COMMAND_SET_SPEC_ID_KEY:
- /* Command spec organization */
- command_set_spec_id = kv->value.immediate;
- SBP2_DEBUG("sbp2_command_set_spec_id = %x",
- (unsigned int)command_set_spec_id);
- break;
-
- case SBP2_COMMAND_SET_KEY:
- /* Command set used by sbp2 device */
- command_set = kv->value.immediate;
- SBP2_DEBUG("sbp2_command_set = %x",
- (unsigned int)command_set);
+ else if (kv->key.type == CSR1212_KV_TYPE_IMMEDIATE)
+ lu->lun = ORB_SET_LUN(kv->value.immediate);
break;
case SBP2_UNIT_CHARACTERISTICS_KEY:
- /*
- * Unit characterisitcs (orb related stuff
- * that I'm not yet paying attention to)
- */
+ /* FIXME: This is ignored so far.
+ * See SBP-2 clause 7.4.8. */
unit_characteristics = kv->value.immediate;
- SBP2_DEBUG("sbp2_unit_characteristics = %x",
- (unsigned int)unit_characteristics);
break;
case SBP2_FIRMWARE_REVISION_KEY:
- /* Firmware revision */
firmware_revision = kv->value.immediate;
- SBP2_DEBUG("sbp2_firmware_revision = %x",
- (unsigned int)firmware_revision);
break;
default:
+ /* FIXME: Check for SBP2_DEVICE_TYPE_AND_LUN_KEY.
+ * Its "ordered" bit has consequences for command ORB
+ * list handling. See SBP-2 clauses 4.6, 7.4.11, 10.2 */
break;
}
}
@@ -1631,28 +1329,24 @@
/* We would need one SCSI host template for each target to adjust
* max_sectors on the fly, therefore warn only. */
if (workarounds & SBP2_WORKAROUND_128K_MAX_TRANS &&
- (max_sectors * 512) > (128 * 1024))
- SBP2_WARN("Node " NODE_BUS_FMT ": Bridge only supports 128KB "
+ (sbp2_max_sectors * 512) > (128 * 1024))
+ SBP2_INFO("Node " NODE_BUS_FMT ": Bridge only supports 128KB "
"max transfer size. WARNING: Current max_sectors "
"setting is larger than 128KB (%d sectors)",
NODE_BUS_ARGS(ud->ne->host, ud->ne->nodeid),
- max_sectors);
+ sbp2_max_sectors);
/* If this is a logical unit directory entry, process the parent
* to get the values. */
if (ud->flags & UNIT_DIRECTORY_LUN_DIRECTORY) {
- struct unit_directory *parent_ud =
- container_of(ud->device.parent, struct unit_directory, device);
- sbp2_parse_unit_directory(scsi_id, parent_ud);
+ struct unit_directory *parent_ud = container_of(
+ ud->device.parent, struct unit_directory, device);
+ sbp2_parse_unit_directory(lu, parent_ud);
} else {
- scsi_id->sbp2_management_agent_addr = management_agent_addr;
- scsi_id->sbp2_command_set_spec_id = command_set_spec_id;
- scsi_id->sbp2_command_set = command_set;
- scsi_id->sbp2_unit_characteristics = unit_characteristics;
- scsi_id->sbp2_firmware_revision = firmware_revision;
- scsi_id->workarounds = workarounds;
+ lu->management_agent_addr = management_agent_addr;
+ lu->workarounds = workarounds;
if (ud->flags & UNIT_DIRECTORY_HAS_LUN)
- scsi_id->sbp2_lun = ORB_SET_LUN(ud->lun);
+ lu->lun = ORB_SET_LUN(ud->lun);
}
}
@@ -1667,133 +1361,114 @@
* the speed that it needs to use, and the max_rec the host supports, and
* it takes care of the rest.
*/
-static int sbp2_max_speed_and_size(struct scsi_id_instance_data *scsi_id)
+static int sbp2_max_speed_and_size(struct sbp2_lu *lu)
{
- struct sbp2scsi_host_info *hi = scsi_id->hi;
+ struct sbp2_fwhost_info *hi = lu->hi;
u8 payload;
- SBP2_DEBUG_ENTER();
+ lu->speed_code = hi->host->speed[NODEID_TO_NODE(lu->ne->nodeid)];
- scsi_id->speed_code =
- hi->host->speed[NODEID_TO_NODE(scsi_id->ne->nodeid)];
-
- /* Bump down our speed if the user requested it */
- if (scsi_id->speed_code > max_speed) {
- scsi_id->speed_code = max_speed;
- SBP2_ERR("Forcing SBP-2 max speed down to %s",
- hpsb_speedto_str[scsi_id->speed_code]);
+ if (lu->speed_code > sbp2_max_speed) {
+ lu->speed_code = sbp2_max_speed;
+ SBP2_INFO("Reducing speed to %s",
+ hpsb_speedto_str[sbp2_max_speed]);
}
/* Payload size is the lesser of what our speed supports and what
* our host supports. */
- payload = min(sbp2_speedto_max_payload[scsi_id->speed_code],
+ payload = min(sbp2_speedto_max_payload[lu->speed_code],
(u8) (hi->host->csr.max_rec - 1));
/* If physical DMA is off, work around limitation in ohci1394:
* packet size must not exceed PAGE_SIZE */
- if (scsi_id->ne->host->low_addr_space < (1ULL << 32))
+ if (lu->ne->host->low_addr_space < (1ULL << 32))
while (SBP2_PAYLOAD_TO_BYTES(payload) + 24 > PAGE_SIZE &&
payload)
payload--;
- HPSB_DEBUG("Node " NODE_BUS_FMT ": Max speed [%s] - Max payload [%u]",
- NODE_BUS_ARGS(hi->host, scsi_id->ne->nodeid),
- hpsb_speedto_str[scsi_id->speed_code],
- SBP2_PAYLOAD_TO_BYTES(payload));
+ SBP2_INFO("Node " NODE_BUS_FMT ": Max speed [%s] - Max payload [%u]",
+ NODE_BUS_ARGS(hi->host, lu->ne->nodeid),
+ hpsb_speedto_str[lu->speed_code],
+ SBP2_PAYLOAD_TO_BYTES(payload));
- scsi_id->max_payload_size = payload;
+ lu->max_payload_size = payload;
return 0;
}
-/*
- * This function is called in order to perform a SBP-2 agent reset.
- */
-static int sbp2_agent_reset(struct scsi_id_instance_data *scsi_id, int wait)
+static int sbp2_agent_reset(struct sbp2_lu *lu, int wait)
{
quadlet_t data;
u64 addr;
int retval;
unsigned long flags;
- SBP2_DEBUG_ENTER();
-
- cancel_delayed_work(&scsi_id->protocol_work);
+ /* flush lu->protocol_work */
if (wait)
flush_scheduled_work();
data = ntohl(SBP2_AGENT_RESET_DATA);
- addr = scsi_id->sbp2_command_block_agent_addr + SBP2_AGENT_RESET_OFFSET;
+ addr = lu->command_block_agent_addr + SBP2_AGENT_RESET_OFFSET;
if (wait)
- retval = hpsb_node_write(scsi_id->ne, addr, &data, 4);
+ retval = hpsb_node_write(lu->ne, addr, &data, 4);
else
- retval = sbp2util_node_write_no_wait(scsi_id->ne, addr, &data, 4);
+ retval = sbp2util_node_write_no_wait(lu->ne, addr, &data, 4);
if (retval < 0) {
SBP2_ERR("hpsb_node_write failed.\n");
return -EIO;
}
- /*
- * Need to make sure orb pointer is written on next command
- */
- spin_lock_irqsave(&scsi_id->sbp2_command_orb_lock, flags);
- scsi_id->last_orb = NULL;
- spin_unlock_irqrestore(&scsi_id->sbp2_command_orb_lock, flags);
+ /* make sure that the ORB_POINTER is written on next command */
+ spin_lock_irqsave(&lu->cmd_orb_lock, flags);
+ lu->last_orb = NULL;
+ spin_unlock_irqrestore(&lu->cmd_orb_lock, flags);
return 0;
}
static void sbp2_prep_command_orb_sg(struct sbp2_command_orb *orb,
- struct sbp2scsi_host_info *hi,
- struct sbp2_command_info *command,
+ struct sbp2_fwhost_info *hi,
+ struct sbp2_command_info *cmd,
unsigned int scsi_use_sg,
struct scatterlist *sgpnt,
u32 orb_direction,
enum dma_data_direction dma_dir)
{
- command->dma_dir = dma_dir;
+ cmd->dma_dir = dma_dir;
orb->data_descriptor_hi = ORB_SET_NODE_ID(hi->host->node_id);
orb->misc |= ORB_SET_DIRECTION(orb_direction);
- /* Special case if only one element (and less than 64KB in size) */
+ /* special case if only one element (and less than 64KB in size) */
if ((scsi_use_sg == 1) &&
(sgpnt[0].length <= SBP2_MAX_SG_ELEMENT_LENGTH)) {
- SBP2_DEBUG("Only one s/g element");
- command->dma_size = sgpnt[0].length;
- command->dma_type = CMD_DMA_PAGE;
- command->cmd_dma = pci_map_page(hi->host->pdev,
- sgpnt[0].page,
- sgpnt[0].offset,
- command->dma_size,
- command->dma_dir);
- SBP2_DMA_ALLOC("single page scatter element");
+ cmd->dma_size = sgpnt[0].length;
+ cmd->dma_type = CMD_DMA_PAGE;
+ cmd->cmd_dma = dma_map_page(&hi->host->device,
+ sgpnt[0].page, sgpnt[0].offset,
+ cmd->dma_size, cmd->dma_dir);
- orb->data_descriptor_lo = command->cmd_dma;
- orb->misc |= ORB_SET_DATA_SIZE(command->dma_size);
+ orb->data_descriptor_lo = cmd->cmd_dma;
+ orb->misc |= ORB_SET_DATA_SIZE(cmd->dma_size);
} else {
struct sbp2_unrestricted_page_table *sg_element =
- &command->scatter_gather_element[0];
+ &cmd->scatter_gather_element[0];
u32 sg_count, sg_len;
dma_addr_t sg_addr;
- int i, count = pci_map_sg(hi->host->pdev, sgpnt, scsi_use_sg,
+ int i, count = dma_map_sg(&hi->host->device, sgpnt, scsi_use_sg,
dma_dir);
- SBP2_DMA_ALLOC("scatter list");
-
- command->dma_size = scsi_use_sg;
- command->sge_buffer = sgpnt;
+ cmd->dma_size = scsi_use_sg;
+ cmd->sge_buffer = sgpnt;
/* use page tables (s/g) */
orb->misc |= ORB_SET_PAGE_TABLE_PRESENT(0x1);
- orb->data_descriptor_lo = command->sge_dma;
+ orb->data_descriptor_lo = cmd->sge_dma;
- /*
- * Loop through and fill out our sbp-2 page tables
- * (and split up anything too large)
- */
+ /* loop through and fill out our SBP-2 page tables
+ * (and split up anything too large) */
for (i = 0, sg_count = 0 ; i < count; i++, sgpnt++) {
sg_len = sg_dma_len(sgpnt);
sg_addr = sg_dma_address(sgpnt);
@@ -1813,70 +1488,53 @@
}
}
- /* Number of page table (s/g) elements */
orb->misc |= ORB_SET_DATA_SIZE(sg_count);
- sbp2util_packet_dump(sg_element,
- (sizeof(struct sbp2_unrestricted_page_table)) * sg_count,
- "sbp2 s/g list", command->sge_dma);
-
- /* Byte swap page tables if necessary */
sbp2util_cpu_to_be32_buffer(sg_element,
- (sizeof(struct sbp2_unrestricted_page_table)) *
- sg_count);
+ (sizeof(struct sbp2_unrestricted_page_table)) *
+ sg_count);
}
}
static void sbp2_prep_command_orb_no_sg(struct sbp2_command_orb *orb,
- struct sbp2scsi_host_info *hi,
- struct sbp2_command_info *command,
+ struct sbp2_fwhost_info *hi,
+ struct sbp2_command_info *cmd,
struct scatterlist *sgpnt,
u32 orb_direction,
unsigned int scsi_request_bufflen,
void *scsi_request_buffer,
enum dma_data_direction dma_dir)
{
- command->dma_dir = dma_dir;
- command->dma_size = scsi_request_bufflen;
- command->dma_type = CMD_DMA_SINGLE;
- command->cmd_dma = pci_map_single(hi->host->pdev, scsi_request_buffer,
- command->dma_size, command->dma_dir);
+ cmd->dma_dir = dma_dir;
+ cmd->dma_size = scsi_request_bufflen;
+ cmd->dma_type = CMD_DMA_SINGLE;
+ cmd->cmd_dma = dma_map_single(&hi->host->device, scsi_request_buffer,
+ cmd->dma_size, cmd->dma_dir);
orb->data_descriptor_hi = ORB_SET_NODE_ID(hi->host->node_id);
orb->misc |= ORB_SET_DIRECTION(orb_direction);
- SBP2_DMA_ALLOC("single bulk");
-
- /*
- * Handle case where we get a command w/o s/g enabled (but
- * check for transfers larger than 64K)
- */
+ /* handle case where we get a command w/o s/g enabled
+ * (but check for transfers larger than 64K) */
if (scsi_request_bufflen <= SBP2_MAX_SG_ELEMENT_LENGTH) {
- orb->data_descriptor_lo = command->cmd_dma;
+ orb->data_descriptor_lo = cmd->cmd_dma;
orb->misc |= ORB_SET_DATA_SIZE(scsi_request_bufflen);
} else {
+ /* The buffer is too large. Turn this into page tables. */
+
struct sbp2_unrestricted_page_table *sg_element =
- &command->scatter_gather_element[0];
+ &cmd->scatter_gather_element[0];
u32 sg_count, sg_len;
dma_addr_t sg_addr;
- /*
- * Need to turn this into page tables, since the
- * buffer is too large.
- */
- orb->data_descriptor_lo = command->sge_dma;
-
- /* Use page tables (s/g) */
+ orb->data_descriptor_lo = cmd->sge_dma;
orb->misc |= ORB_SET_PAGE_TABLE_PRESENT(0x1);
- /*
- * fill out our sbp-2 page tables (and split up
- * the large buffer)
- */
+ /* fill out our SBP-2 page tables; split up the large buffer */
sg_count = 0;
sg_len = scsi_request_bufflen;
- sg_addr = command->cmd_dma;
+ sg_addr = cmd->cmd_dma;
while (sg_len) {
sg_element[sg_count].segment_base_lo = sg_addr;
if (sg_len > SBP2_MAX_SG_ELEMENT_LENGTH) {
@@ -1892,50 +1550,40 @@
sg_count++;
}
- /* Number of page table (s/g) elements */
orb->misc |= ORB_SET_DATA_SIZE(sg_count);
- sbp2util_packet_dump(sg_element,
- (sizeof(struct sbp2_unrestricted_page_table)) * sg_count,
- "sbp2 s/g list", command->sge_dma);
-
- /* Byte swap page tables if necessary */
sbp2util_cpu_to_be32_buffer(sg_element,
- (sizeof(struct sbp2_unrestricted_page_table)) *
- sg_count);
+ (sizeof(struct sbp2_unrestricted_page_table)) *
+ sg_count);
}
}
-/*
- * This function is called to create the actual command orb and s/g list
- * out of the scsi command itself.
- */
-static void sbp2_create_command_orb(struct scsi_id_instance_data *scsi_id,
- struct sbp2_command_info *command,
+static void sbp2_create_command_orb(struct sbp2_lu *lu,
+ struct sbp2_command_info *cmd,
unchar *scsi_cmd,
unsigned int scsi_use_sg,
unsigned int scsi_request_bufflen,
void *scsi_request_buffer,
enum dma_data_direction dma_dir)
{
- struct sbp2scsi_host_info *hi = scsi_id->hi;
+ struct sbp2_fwhost_info *hi = lu->hi;
struct scatterlist *sgpnt = (struct scatterlist *)scsi_request_buffer;
- struct sbp2_command_orb *command_orb = &command->command_orb;
+ struct sbp2_command_orb *orb = &cmd->command_orb;
u32 orb_direction;
/*
- * Set-up our command ORB..
+ * Set-up our command ORB.
*
* NOTE: We're doing unrestricted page tables (s/g), as this is
* best performance (at least with the devices I have). This means
* that data_size becomes the number of s/g elements, and
* page_size should be zero (for unrestricted).
*/
- command_orb->next_ORB_hi = ORB_SET_NULL_PTR(1);
- command_orb->next_ORB_lo = 0x0;
- command_orb->misc = ORB_SET_MAX_PAYLOAD(scsi_id->max_payload_size);
- command_orb->misc |= ORB_SET_SPEED(scsi_id->speed_code);
- command_orb->misc |= ORB_SET_NOTIFY(1); /* Notify us when complete */
+ orb->next_ORB_hi = ORB_SET_NULL_PTR(1);
+ orb->next_ORB_lo = 0x0;
+ orb->misc = ORB_SET_MAX_PAYLOAD(lu->max_payload_size);
+ orb->misc |= ORB_SET_SPEED(lu->speed_code);
+ orb->misc |= ORB_SET_NOTIFY(1);
if (dma_dir == DMA_NONE)
orb_direction = ORB_DIRECTION_NO_DATA_TRANSFER;
@@ -1944,66 +1592,51 @@
else if (dma_dir == DMA_FROM_DEVICE && scsi_request_bufflen)
orb_direction = ORB_DIRECTION_READ_FROM_MEDIA;
else {
- SBP2_WARN("Falling back to DMA_NONE");
+ SBP2_INFO("Falling back to DMA_NONE");
orb_direction = ORB_DIRECTION_NO_DATA_TRANSFER;
}
- /* Set-up our pagetable stuff */
+ /* set up our page table stuff */
if (orb_direction == ORB_DIRECTION_NO_DATA_TRANSFER) {
- SBP2_DEBUG("No data transfer");
- command_orb->data_descriptor_hi = 0x0;
- command_orb->data_descriptor_lo = 0x0;
- command_orb->misc |= ORB_SET_DIRECTION(1);
- } else if (scsi_use_sg) {
- SBP2_DEBUG("Use scatter/gather");
- sbp2_prep_command_orb_sg(command_orb, hi, command, scsi_use_sg,
- sgpnt, orb_direction, dma_dir);
- } else {
- SBP2_DEBUG("No scatter/gather");
- sbp2_prep_command_orb_no_sg(command_orb, hi, command, sgpnt,
- orb_direction, scsi_request_bufflen,
+ orb->data_descriptor_hi = 0x0;
+ orb->data_descriptor_lo = 0x0;
+ orb->misc |= ORB_SET_DIRECTION(1);
+ } else if (scsi_use_sg)
+ sbp2_prep_command_orb_sg(orb, hi, cmd, scsi_use_sg, sgpnt,
+ orb_direction, dma_dir);
+ else
+ sbp2_prep_command_orb_no_sg(orb, hi, cmd, sgpnt, orb_direction,
+ scsi_request_bufflen,
scsi_request_buffer, dma_dir);
- }
- /* Byte swap command ORB if necessary */
- sbp2util_cpu_to_be32_buffer(command_orb, sizeof(struct sbp2_command_orb));
+ sbp2util_cpu_to_be32_buffer(orb, sizeof(*orb));
- /* Put our scsi command in the command ORB */
- memset(command_orb->cdb, 0, 12);
- memcpy(command_orb->cdb, scsi_cmd, COMMAND_SIZE(*scsi_cmd));
+ memset(orb->cdb, 0, 12);
+ memcpy(orb->cdb, scsi_cmd, COMMAND_SIZE(*scsi_cmd));
}
-/*
- * This function is called in order to begin a regular SBP-2 command.
- */
-static void sbp2_link_orb_command(struct scsi_id_instance_data *scsi_id,
- struct sbp2_command_info *command)
+static void sbp2_link_orb_command(struct sbp2_lu *lu,
+ struct sbp2_command_info *cmd)
{
- struct sbp2scsi_host_info *hi = scsi_id->hi;
- struct sbp2_command_orb *command_orb = &command->command_orb;
+ struct sbp2_fwhost_info *hi = lu->hi;
struct sbp2_command_orb *last_orb;
dma_addr_t last_orb_dma;
- u64 addr = scsi_id->sbp2_command_block_agent_addr;
+ u64 addr = lu->command_block_agent_addr;
quadlet_t data[2];
size_t length;
unsigned long flags;
- outstanding_orb_incr;
- SBP2_ORB_DEBUG("sending command orb %p, total orbs = %x",
- command_orb, global_outstanding_command_orbs);
+ dma_sync_single_for_device(&hi->host->device, cmd->command_orb_dma,
+ sizeof(struct sbp2_command_orb),
+ DMA_TO_DEVICE);
+ dma_sync_single_for_device(&hi->host->device, cmd->sge_dma,
+ sizeof(cmd->scatter_gather_element),
+ DMA_BIDIRECTIONAL);
- pci_dma_sync_single_for_device(hi->host->pdev, command->command_orb_dma,
- sizeof(struct sbp2_command_orb),
- PCI_DMA_TODEVICE);
- pci_dma_sync_single_for_device(hi->host->pdev, command->sge_dma,
- sizeof(command->scatter_gather_element),
- PCI_DMA_BIDIRECTIONAL);
- /*
- * Check to see if there are any previous orbs to use
- */
- spin_lock_irqsave(&scsi_id->sbp2_command_orb_lock, flags);
- last_orb = scsi_id->last_orb;
- last_orb_dma = scsi_id->last_orb_dma;
+ /* check to see if there are any previous orbs to use */
+ spin_lock_irqsave(&lu->cmd_orb_lock, flags);
+ last_orb = lu->last_orb;
+ last_orb_dma = lu->last_orb_dma;
if (!last_orb) {
/*
* last_orb == NULL means: We know that the target's fetch agent
@@ -2011,7 +1644,7 @@
*/
addr += SBP2_ORB_POINTER_OFFSET;
data[0] = ORB_SET_NODE_ID(hi->host->node_id);
- data[1] = command->command_orb_dma;
+ data[1] = cmd->command_orb_dma;
sbp2util_cpu_to_be32_buffer(data, 8);
length = 8;
} else {
@@ -2022,27 +1655,25 @@
* The target's fetch agent may or may not have read this
* previous ORB yet.
*/
- pci_dma_sync_single_for_cpu(hi->host->pdev, last_orb_dma,
- sizeof(struct sbp2_command_orb),
- PCI_DMA_TODEVICE);
- last_orb->next_ORB_lo = cpu_to_be32(command->command_orb_dma);
+ dma_sync_single_for_cpu(&hi->host->device, last_orb_dma,
+ sizeof(struct sbp2_command_orb),
+ DMA_TO_DEVICE);
+ last_orb->next_ORB_lo = cpu_to_be32(cmd->command_orb_dma);
wmb();
/* Tells hardware that this pointer is valid */
last_orb->next_ORB_hi = 0;
- pci_dma_sync_single_for_device(hi->host->pdev, last_orb_dma,
- sizeof(struct sbp2_command_orb),
- PCI_DMA_TODEVICE);
+ dma_sync_single_for_device(&hi->host->device, last_orb_dma,
+ sizeof(struct sbp2_command_orb),
+ DMA_TO_DEVICE);
addr += SBP2_DOORBELL_OFFSET;
data[0] = 0;
length = 4;
}
- scsi_id->last_orb = command_orb;
- scsi_id->last_orb_dma = command->command_orb_dma;
- spin_unlock_irqrestore(&scsi_id->sbp2_command_orb_lock, flags);
+ lu->last_orb = &cmd->command_orb;
+ lu->last_orb_dma = cmd->command_orb_dma;
+ spin_unlock_irqrestore(&lu->cmd_orb_lock, flags);
- SBP2_ORB_DEBUG("write to %s register, command orb %p",
- last_orb ? "DOORBELL" : "ORB_POINTER", command_orb);
- if (sbp2util_node_write_no_wait(scsi_id->ne, addr, data, length)) {
+ if (sbp2util_node_write_no_wait(lu->ne, addr, data, length)) {
/*
* sbp2util_node_write_no_wait failed. We certainly ran out
* of transaction labels, perhaps just because there were no
@@ -2051,51 +1682,29 @@
* the workqueue job will sleep to guaranteedly get a tlabel.
* We do not accept new commands until the job is over.
*/
- scsi_block_requests(scsi_id->scsi_host);
- PREPARE_DELAYED_WORK(&scsi_id->protocol_work,
+ scsi_block_requests(lu->shost);
+ PREPARE_WORK(&lu->protocol_work,
last_orb ? sbp2util_write_doorbell:
sbp2util_write_orb_pointer);
- schedule_delayed_work(&scsi_id->protocol_work, 0);
+ schedule_work(&lu->protocol_work);
}
}
-/*
- * This function is called in order to begin a regular SBP-2 command.
- */
-static int sbp2_send_command(struct scsi_id_instance_data *scsi_id,
- struct scsi_cmnd *SCpnt,
+static int sbp2_send_command(struct sbp2_lu *lu, struct scsi_cmnd *SCpnt,
void (*done)(struct scsi_cmnd *))
{
- unchar *cmd = (unchar *) SCpnt->cmnd;
+ unchar *scsi_cmd = (unchar *)SCpnt->cmnd;
unsigned int request_bufflen = SCpnt->request_bufflen;
- struct sbp2_command_info *command;
+ struct sbp2_command_info *cmd;
- SBP2_DEBUG_ENTER();
- SBP2_DEBUG("SCSI transfer size = %x", request_bufflen);
- SBP2_DEBUG("SCSI s/g elements = %x", (unsigned int)SCpnt->use_sg);
-
- /*
- * Allocate a command orb and s/g structure
- */
- command = sbp2util_allocate_command_orb(scsi_id, SCpnt, done);
- if (!command) {
+ cmd = sbp2util_allocate_command_orb(lu, SCpnt, done);
+ if (!cmd)
return -EIO;
- }
- /*
- * Now actually fill in the comamnd orb and sbp2 s/g list
- */
- sbp2_create_command_orb(scsi_id, command, cmd, SCpnt->use_sg,
+ sbp2_create_command_orb(lu, cmd, scsi_cmd, SCpnt->use_sg,
request_bufflen, SCpnt->request_buffer,
SCpnt->sc_data_direction);
-
- sbp2util_packet_dump(&command->command_orb, sizeof(struct sbp2_command_orb),
- "sbp2 command orb", command->command_orb_dma);
-
- /*
- * Link up the orb, and ring the doorbell if needed
- */
- sbp2_link_orb_command(scsi_id, command);
+ sbp2_link_orb_command(lu, cmd);
return 0;
}
@@ -2103,13 +1712,10 @@
/*
* Translates SBP-2 status into SCSI sense data for check conditions
*/
-static unsigned int sbp2_status_to_sense_data(unchar *sbp2_status, unchar *sense_data)
+static unsigned int sbp2_status_to_sense_data(unchar *sbp2_status,
+ unchar *sense_data)
{
- SBP2_DEBUG_ENTER();
-
- /*
- * Ok, it's pretty ugly... ;-)
- */
+ /* OK, it's pretty ugly... ;-) */
sense_data[0] = 0x70;
sense_data[1] = 0x0;
sense_data[2] = sbp2_status[9];
@@ -2127,28 +1733,21 @@
sense_data[14] = sbp2_status[20];
sense_data[15] = sbp2_status[21];
- return sbp2_status[8] & 0x3f; /* return scsi status */
+ return sbp2_status[8] & 0x3f;
}
-/*
- * This function deals with status writes from the SBP-2 device
- */
static int sbp2_handle_status_write(struct hpsb_host *host, int nodeid,
int destid, quadlet_t *data, u64 addr,
size_t length, u16 fl)
{
- struct sbp2scsi_host_info *hi;
- struct scsi_id_instance_data *scsi_id = NULL, *scsi_id_tmp;
+ struct sbp2_fwhost_info *hi;
+ struct sbp2_lu *lu = NULL, *lu_tmp;
struct scsi_cmnd *SCpnt = NULL;
struct sbp2_status_block *sb;
u32 scsi_status = SBP2_SCSI_STATUS_GOOD;
- struct sbp2_command_info *command;
+ struct sbp2_command_info *cmd;
unsigned long flags;
- SBP2_DEBUG_ENTER();
-
- sbp2util_packet_dump(data, length, "sbp2 status write by device", (u32)addr);
-
if (unlikely(length < 8 || length > sizeof(struct sbp2_status_block))) {
SBP2_ERR("Wrong size of status block");
return RCODE_ADDRESS_ERROR;
@@ -2162,131 +1761,97 @@
SBP2_ERR("host info is NULL - this is bad!");
return RCODE_ADDRESS_ERROR;
}
- /*
- * Find our scsi_id structure by looking at the status fifo address
- * written to by the sbp2 device.
- */
- list_for_each_entry(scsi_id_tmp, &hi->scsi_ids, scsi_list) {
- if (scsi_id_tmp->ne->nodeid == nodeid &&
- scsi_id_tmp->status_fifo_addr == addr) {
- scsi_id = scsi_id_tmp;
+
+ /* Find the unit which wrote the status. */
+ list_for_each_entry(lu_tmp, &hi->logical_units, lu_list) {
+ if (lu_tmp->ne->nodeid == nodeid &&
+ lu_tmp->status_fifo_addr == addr) {
+ lu = lu_tmp;
break;
}
}
- if (unlikely(!scsi_id)) {
- SBP2_ERR("scsi_id is NULL - device is gone?");
+ if (unlikely(!lu)) {
+ SBP2_ERR("lu is NULL - device is gone?");
return RCODE_ADDRESS_ERROR;
}
- /*
- * Put response into scsi_id status fifo buffer. The first two bytes
+ /* Put response into lu status fifo buffer. The first two bytes
* come in big endian bit order. Often the target writes only a
* truncated status block, minimally the first two quadlets. The rest
- * is implied to be zeros.
- */
- sb = &scsi_id->status_block;
+ * is implied to be zeros. */
+ sb = &lu->status_block;
memset(sb->command_set_dependent, 0, sizeof(sb->command_set_dependent));
memcpy(sb, data, length);
sbp2util_be32_to_cpu_buffer(sb, 8);
- /*
- * Ignore unsolicited status. Handle command ORB status.
- */
+ /* Ignore unsolicited status. Handle command ORB status. */
if (unlikely(STATUS_GET_SRC(sb->ORB_offset_hi_misc) == 2))
- command = NULL;
+ cmd = NULL;
else
- command = sbp2util_find_command_for_orb(scsi_id,
- sb->ORB_offset_lo);
- if (command) {
- SBP2_DEBUG("Found status for command ORB");
- pci_dma_sync_single_for_cpu(hi->host->pdev, command->command_orb_dma,
- sizeof(struct sbp2_command_orb),
- PCI_DMA_TODEVICE);
- pci_dma_sync_single_for_cpu(hi->host->pdev, command->sge_dma,
- sizeof(command->scatter_gather_element),
- PCI_DMA_BIDIRECTIONAL);
-
- SBP2_ORB_DEBUG("matched command orb %p", &command->command_orb);
- outstanding_orb_decr;
-
- /*
- * Matched status with command, now grab scsi command pointers
- * and check status.
- */
+ cmd = sbp2util_find_command_for_orb(lu, sb->ORB_offset_lo);
+ if (cmd) {
+ dma_sync_single_for_cpu(&hi->host->device, cmd->command_orb_dma,
+ sizeof(struct sbp2_command_orb),
+ DMA_TO_DEVICE);
+ dma_sync_single_for_cpu(&hi->host->device, cmd->sge_dma,
+ sizeof(cmd->scatter_gather_element),
+ DMA_BIDIRECTIONAL);
+ /* Grab SCSI command pointers and check status. */
/*
* FIXME: If the src field in the status is 1, the ORB DMA must
* not be reused until status for a subsequent ORB is received.
*/
- SCpnt = command->Current_SCpnt;
- spin_lock_irqsave(&scsi_id->sbp2_command_orb_lock, flags);
- sbp2util_mark_command_completed(scsi_id, command);
- spin_unlock_irqrestore(&scsi_id->sbp2_command_orb_lock, flags);
+ SCpnt = cmd->Current_SCpnt;
+ spin_lock_irqsave(&lu->cmd_orb_lock, flags);
+ sbp2util_mark_command_completed(lu, cmd);
+ spin_unlock_irqrestore(&lu->cmd_orb_lock, flags);
if (SCpnt) {
u32 h = sb->ORB_offset_hi_misc;
u32 r = STATUS_GET_RESP(h);
if (r != RESP_STATUS_REQUEST_COMPLETE) {
- SBP2_WARN("resp 0x%x, sbp_status 0x%x",
+ SBP2_INFO("resp 0x%x, sbp_status 0x%x",
r, STATUS_GET_SBP_STATUS(h));
scsi_status =
r == RESP_STATUS_TRANSPORT_FAILURE ?
SBP2_SCSI_STATUS_BUSY :
SBP2_SCSI_STATUS_COMMAND_TERMINATED;
}
- /*
- * See if the target stored any scsi status information.
- */
- if (STATUS_GET_LEN(h) > 1) {
- SBP2_DEBUG("CHECK CONDITION");
+
+ if (STATUS_GET_LEN(h) > 1)
scsi_status = sbp2_status_to_sense_data(
(unchar *)sb, SCpnt->sense_buffer);
- }
- /*
- * Check to see if the dead bit is set. If so, we'll
- * have to initiate a fetch agent reset.
- */
- if (STATUS_TEST_DEAD(h)) {
- SBP2_DEBUG("Dead bit set - "
- "initiating fetch agent reset");
- sbp2_agent_reset(scsi_id, 0);
- }
- SBP2_ORB_DEBUG("completing command orb %p", &command->command_orb);
+
+ if (STATUS_TEST_DEAD(h))
+ sbp2_agent_reset(lu, 0);
}
- /*
- * Check here to see if there are no commands in-use. If there
+ /* Check here to see if there are no commands in-use. If there
* are none, we know that the fetch agent left the active state
* _and_ that we did not reactivate it yet. Therefore clear
* last_orb so that next time we write directly to the
* ORB_POINTER register. That way the fetch agent does not need
- * to refetch the next_ORB.
- */
- spin_lock_irqsave(&scsi_id->sbp2_command_orb_lock, flags);
- if (list_empty(&scsi_id->sbp2_command_orb_inuse))
- scsi_id->last_orb = NULL;
- spin_unlock_irqrestore(&scsi_id->sbp2_command_orb_lock, flags);
+ * to refetch the next_ORB. */
+ spin_lock_irqsave(&lu->cmd_orb_lock, flags);
+ if (list_empty(&lu->cmd_orb_inuse))
+ lu->last_orb = NULL;
+ spin_unlock_irqrestore(&lu->cmd_orb_lock, flags);
} else {
- /*
- * It's probably a login/logout/reconnect status.
- */
- if ((sb->ORB_offset_lo == scsi_id->reconnect_orb_dma) ||
- (sb->ORB_offset_lo == scsi_id->login_orb_dma) ||
- (sb->ORB_offset_lo == scsi_id->query_logins_orb_dma) ||
- (sb->ORB_offset_lo == scsi_id->logout_orb_dma)) {
- scsi_id->access_complete = 1;
- wake_up_interruptible(&access_wq);
+ /* It's probably status after a management request. */
+ if ((sb->ORB_offset_lo == lu->reconnect_orb_dma) ||
+ (sb->ORB_offset_lo == lu->login_orb_dma) ||
+ (sb->ORB_offset_lo == lu->query_logins_orb_dma) ||
+ (sb->ORB_offset_lo == lu->logout_orb_dma)) {
+ lu->access_complete = 1;
+ wake_up_interruptible(&sbp2_access_wq);
}
}
- if (SCpnt) {
- SBP2_DEBUG("Completing SCSI command");
- sbp2scsi_complete_command(scsi_id, scsi_status, SCpnt,
- command->Current_done);
- SBP2_ORB_DEBUG("command orb completed");
- }
-
+ if (SCpnt)
+ sbp2scsi_complete_command(lu, scsi_status, SCpnt,
+ cmd->Current_done);
return RCODE_COMPLETE;
}
@@ -2294,77 +1859,57 @@
* SCSI interface related section
**************************************/
-/*
- * This routine is the main request entry routine for doing I/O. It is
- * called from the scsi stack directly.
- */
static int sbp2scsi_queuecommand(struct scsi_cmnd *SCpnt,
void (*done)(struct scsi_cmnd *))
{
- struct scsi_id_instance_data *scsi_id =
- (struct scsi_id_instance_data *)SCpnt->device->host->hostdata[0];
- struct sbp2scsi_host_info *hi;
+ struct sbp2_lu *lu = (struct sbp2_lu *)SCpnt->device->host->hostdata[0];
+ struct sbp2_fwhost_info *hi;
int result = DID_NO_CONNECT << 16;
- SBP2_DEBUG_ENTER();
-#if (CONFIG_IEEE1394_SBP2_DEBUG >= 2) || defined(CONFIG_IEEE1394_SBP2_PACKET_DUMP)
- scsi_print_command(SCpnt);
-#endif
-
- if (!sbp2util_node_is_available(scsi_id))
+ if (unlikely(!sbp2util_node_is_available(lu)))
goto done;
- hi = scsi_id->hi;
+ hi = lu->hi;
- if (!hi) {
- SBP2_ERR("sbp2scsi_host_info is NULL - this is bad!");
+ if (unlikely(!hi)) {
+ SBP2_ERR("sbp2_fwhost_info is NULL - this is bad!");
goto done;
}
- /*
- * Until we handle multiple luns, just return selection time-out
- * to any IO directed at non-zero LUNs
- */
- if (SCpnt->device->lun)
+ /* Multiple units are currently represented to the SCSI core as separate
+ * targets, not as one target with multiple LUs. Therefore return
+ * selection time-out to any IO directed at non-zero LUNs. */
+ if (unlikely(SCpnt->device->lun))
goto done;
- /*
- * Check for request sense command, and handle it here
- * (autorequest sense)
- */
+ /* handle the request sense command here (auto-request sense) */
if (SCpnt->cmnd[0] == REQUEST_SENSE) {
- SBP2_DEBUG("REQUEST_SENSE");
- memcpy(SCpnt->request_buffer, SCpnt->sense_buffer, SCpnt->request_bufflen);
+ memcpy(SCpnt->request_buffer, SCpnt->sense_buffer,
+ SCpnt->request_bufflen);
memset(SCpnt->sense_buffer, 0, sizeof(SCpnt->sense_buffer));
- sbp2scsi_complete_command(scsi_id, SBP2_SCSI_STATUS_GOOD, SCpnt, done);
+ sbp2scsi_complete_command(lu, SBP2_SCSI_STATUS_GOOD, SCpnt,
+ done);
return 0;
}
- /*
- * Check to see if we are in the middle of a bus reset.
- */
- if (!hpsb_node_entry_valid(scsi_id->ne)) {
+ if (unlikely(!hpsb_node_entry_valid(lu->ne))) {
SBP2_ERR("Bus reset in progress - rejecting command");
result = DID_BUS_BUSY << 16;
goto done;
}
- /*
- * Bidirectional commands are not yet implemented,
- * and unknown transfer direction not handled.
- */
- if (SCpnt->sc_data_direction == DMA_BIDIRECTIONAL) {
+ /* Bidirectional commands are not yet implemented,
+ * and unknown transfer direction not handled. */
+ if (unlikely(SCpnt->sc_data_direction == DMA_BIDIRECTIONAL)) {
SBP2_ERR("Cannot handle DMA_BIDIRECTIONAL - rejecting command");
result = DID_ERROR << 16;
goto done;
}
- /*
- * Try and send our SCSI command
- */
- if (sbp2_send_command(scsi_id, SCpnt, done)) {
+ if (sbp2_send_command(lu, SCpnt, done)) {
SBP2_ERR("Error sending SCSI command");
- sbp2scsi_complete_command(scsi_id, SBP2_SCSI_STATUS_SELECTION_TIMEOUT,
+ sbp2scsi_complete_command(lu,
+ SBP2_SCSI_STATUS_SELECTION_TIMEOUT,
SCpnt, done);
}
return 0;
@@ -2375,75 +1920,46 @@
return 0;
}
-/*
- * This function is called in order to complete all outstanding SBP-2
- * commands (in case of resets, etc.).
- */
-static void sbp2scsi_complete_all_commands(struct scsi_id_instance_data *scsi_id,
- u32 status)
+static void sbp2scsi_complete_all_commands(struct sbp2_lu *lu, u32 status)
{
- struct sbp2scsi_host_info *hi = scsi_id->hi;
+ struct sbp2_fwhost_info *hi = lu->hi;
struct list_head *lh;
- struct sbp2_command_info *command;
+ struct sbp2_command_info *cmd;
unsigned long flags;
- SBP2_DEBUG_ENTER();
-
- spin_lock_irqsave(&scsi_id->sbp2_command_orb_lock, flags);
- while (!list_empty(&scsi_id->sbp2_command_orb_inuse)) {
- SBP2_DEBUG("Found pending command to complete");
- lh = scsi_id->sbp2_command_orb_inuse.next;
- command = list_entry(lh, struct sbp2_command_info, list);
- pci_dma_sync_single_for_cpu(hi->host->pdev, command->command_orb_dma,
- sizeof(struct sbp2_command_orb),
- PCI_DMA_TODEVICE);
- pci_dma_sync_single_for_cpu(hi->host->pdev, command->sge_dma,
- sizeof(command->scatter_gather_element),
- PCI_DMA_BIDIRECTIONAL);
- sbp2util_mark_command_completed(scsi_id, command);
- if (command->Current_SCpnt) {
- command->Current_SCpnt->result = status << 16;
- command->Current_done(command->Current_SCpnt);
+ spin_lock_irqsave(&lu->cmd_orb_lock, flags);
+ while (!list_empty(&lu->cmd_orb_inuse)) {
+ lh = lu->cmd_orb_inuse.next;
+ cmd = list_entry(lh, struct sbp2_command_info, list);
+ dma_sync_single_for_cpu(&hi->host->device, cmd->command_orb_dma,
+ sizeof(struct sbp2_command_orb),
+ DMA_TO_DEVICE);
+ dma_sync_single_for_cpu(&hi->host->device, cmd->sge_dma,
+ sizeof(cmd->scatter_gather_element),
+ DMA_BIDIRECTIONAL);
+ sbp2util_mark_command_completed(lu, cmd);
+ if (cmd->Current_SCpnt) {
+ cmd->Current_SCpnt->result = status << 16;
+ cmd->Current_done(cmd->Current_SCpnt);
}
}
- spin_unlock_irqrestore(&scsi_id->sbp2_command_orb_lock, flags);
+ spin_unlock_irqrestore(&lu->cmd_orb_lock, flags);
return;
}
/*
- * This function is called in order to complete a regular SBP-2 command.
- *
- * This can be called in interrupt context.
+ * Complete a regular SCSI command. Can be called in atomic context.
*/
-static void sbp2scsi_complete_command(struct scsi_id_instance_data *scsi_id,
- u32 scsi_status, struct scsi_cmnd *SCpnt,
+static void sbp2scsi_complete_command(struct sbp2_lu *lu, u32 scsi_status,
+ struct scsi_cmnd *SCpnt,
void (*done)(struct scsi_cmnd *))
{
- SBP2_DEBUG_ENTER();
-
- /*
- * Sanity
- */
if (!SCpnt) {
SBP2_ERR("SCpnt is NULL");
return;
}
- /*
- * If a bus reset is in progress and there was an error, don't
- * complete the command, just let it get retried at the end of the
- * bus reset.
- */
- if (!hpsb_node_entry_valid(scsi_id->ne)
- && (scsi_status != SBP2_SCSI_STATUS_GOOD)) {
- SBP2_ERR("Bus reset in progress - retry command later");
- return;
- }
-
- /*
- * Switch on scsi status
- */
switch (scsi_status) {
case SBP2_SCSI_STATUS_GOOD:
SCpnt->result = DID_OK << 16;
@@ -2455,12 +1971,7 @@
break;
case SBP2_SCSI_STATUS_CHECK_CONDITION:
- SBP2_DEBUG("SBP2_SCSI_STATUS_CHECK_CONDITION");
SCpnt->result = CHECK_CONDITION << 1 | DID_OK << 16;
-#if CONFIG_IEEE1394_SBP2_DEBUG >= 1
- scsi_print_command(SCpnt);
- scsi_print_sense(SBP2_DEVICE_NAME, SCpnt);
-#endif
break;
case SBP2_SCSI_STATUS_SELECTION_TIMEOUT:
@@ -2482,118 +1993,88 @@
SCpnt->result = DID_ERROR << 16;
}
- /*
- * If a bus reset is in progress and there was an error, complete
- * the command as busy so that it will get retried.
- */
- if (!hpsb_node_entry_valid(scsi_id->ne)
+ /* If a bus reset is in progress and there was an error, complete
+ * the command as busy so that it will get retried. */
+ if (!hpsb_node_entry_valid(lu->ne)
&& (scsi_status != SBP2_SCSI_STATUS_GOOD)) {
SBP2_ERR("Completing command with busy (bus reset)");
SCpnt->result = DID_BUS_BUSY << 16;
}
- /*
- * If a unit attention occurs, return busy status so it gets
- * retried... it could have happened because of a 1394 bus reset
- * or hot-plug...
- * XXX DID_BUS_BUSY is actually a bad idea because it will defy
- * the scsi layer's retry logic.
- */
-#if 0
- if ((scsi_status == SBP2_SCSI_STATUS_CHECK_CONDITION) &&
- (SCpnt->sense_buffer[2] == UNIT_ATTENTION)) {
- SBP2_DEBUG("UNIT ATTENTION - return busy");
- SCpnt->result = DID_BUS_BUSY << 16;
- }
-#endif
-
- /*
- * Tell scsi stack that we're done with this command
- */
+ /* Tell the SCSI stack that we're done with this command. */
done(SCpnt);
}
static int sbp2scsi_slave_alloc(struct scsi_device *sdev)
{
- struct scsi_id_instance_data *scsi_id =
- (struct scsi_id_instance_data *)sdev->host->hostdata[0];
+ struct sbp2_lu *lu = (struct sbp2_lu *)sdev->host->hostdata[0];
- scsi_id->sdev = sdev;
+ lu->sdev = sdev;
sdev->allow_restart = 1;
- if (scsi_id->workarounds & SBP2_WORKAROUND_INQUIRY_36)
+ if (lu->workarounds & SBP2_WORKAROUND_INQUIRY_36)
sdev->inquiry_len = 36;
return 0;
}
static int sbp2scsi_slave_configure(struct scsi_device *sdev)
{
- struct scsi_id_instance_data *scsi_id =
- (struct scsi_id_instance_data *)sdev->host->hostdata[0];
+ struct sbp2_lu *lu = (struct sbp2_lu *)sdev->host->hostdata[0];
blk_queue_dma_alignment(sdev->request_queue, (512 - 1));
sdev->use_10_for_rw = 1;
if (sdev->type == TYPE_DISK &&
- scsi_id->workarounds & SBP2_WORKAROUND_MODE_SENSE_8)
+ lu->workarounds & SBP2_WORKAROUND_MODE_SENSE_8)
sdev->skip_ms_page_8 = 1;
- if (scsi_id->workarounds & SBP2_WORKAROUND_FIX_CAPACITY)
+ if (lu->workarounds & SBP2_WORKAROUND_FIX_CAPACITY)
sdev->fix_capacity = 1;
return 0;
}
static void sbp2scsi_slave_destroy(struct scsi_device *sdev)
{
- ((struct scsi_id_instance_data *)sdev->host->hostdata[0])->sdev = NULL;
+ ((struct sbp2_lu *)sdev->host->hostdata[0])->sdev = NULL;
return;
}
/*
- * Called by scsi stack when something has really gone wrong. Usually
- * called when a command has timed-out for some reason.
+ * Called by scsi stack when something has really gone wrong.
+ * Usually called when a command has timed-out for some reason.
*/
static int sbp2scsi_abort(struct scsi_cmnd *SCpnt)
{
- struct scsi_id_instance_data *scsi_id =
- (struct scsi_id_instance_data *)SCpnt->device->host->hostdata[0];
- struct sbp2scsi_host_info *hi = scsi_id->hi;
- struct sbp2_command_info *command;
+ struct sbp2_lu *lu = (struct sbp2_lu *)SCpnt->device->host->hostdata[0];
+ struct sbp2_fwhost_info *hi = lu->hi;
+ struct sbp2_command_info *cmd;
unsigned long flags;
- SBP2_ERR("aborting sbp2 command");
+ SBP2_INFO("aborting sbp2 command");
scsi_print_command(SCpnt);
- if (sbp2util_node_is_available(scsi_id)) {
+ if (sbp2util_node_is_available(lu)) {
+ sbp2_agent_reset(lu, 1);
- /*
- * Right now, just return any matching command structures
- * to the free pool.
- */
- spin_lock_irqsave(&scsi_id->sbp2_command_orb_lock, flags);
- command = sbp2util_find_command_for_SCpnt(scsi_id, SCpnt);
- if (command) {
- SBP2_DEBUG("Found command to abort");
- pci_dma_sync_single_for_cpu(hi->host->pdev,
- command->command_orb_dma,
- sizeof(struct sbp2_command_orb),
- PCI_DMA_TODEVICE);
- pci_dma_sync_single_for_cpu(hi->host->pdev,
- command->sge_dma,
- sizeof(command->scatter_gather_element),
- PCI_DMA_BIDIRECTIONAL);
- sbp2util_mark_command_completed(scsi_id, command);
- if (command->Current_SCpnt) {
- command->Current_SCpnt->result = DID_ABORT << 16;
- command->Current_done(command->Current_SCpnt);
+ /* Return a matching command structure to the free pool. */
+ spin_lock_irqsave(&lu->cmd_orb_lock, flags);
+ cmd = sbp2util_find_command_for_SCpnt(lu, SCpnt);
+ if (cmd) {
+ dma_sync_single_for_cpu(&hi->host->device,
+ cmd->command_orb_dma,
+ sizeof(struct sbp2_command_orb),
+ DMA_TO_DEVICE);
+ dma_sync_single_for_cpu(&hi->host->device, cmd->sge_dma,
+ sizeof(cmd->scatter_gather_element),
+ DMA_BIDIRECTIONAL);
+ sbp2util_mark_command_completed(lu, cmd);
+ if (cmd->Current_SCpnt) {
+ cmd->Current_SCpnt->result = DID_ABORT << 16;
+ cmd->Current_done(cmd->Current_SCpnt);
}
}
- spin_unlock_irqrestore(&scsi_id->sbp2_command_orb_lock, flags);
+ spin_unlock_irqrestore(&lu->cmd_orb_lock, flags);
- /*
- * Initiate a fetch agent reset.
- */
- sbp2_agent_reset(scsi_id, 1);
- sbp2scsi_complete_all_commands(scsi_id, DID_BUS_BUSY);
+ sbp2scsi_complete_all_commands(lu, DID_BUS_BUSY);
}
return SUCCESS;
@@ -2604,14 +2085,13 @@
*/
static int sbp2scsi_reset(struct scsi_cmnd *SCpnt)
{
- struct scsi_id_instance_data *scsi_id =
- (struct scsi_id_instance_data *)SCpnt->device->host->hostdata[0];
+ struct sbp2_lu *lu = (struct sbp2_lu *)SCpnt->device->host->hostdata[0];
- SBP2_ERR("reset requested");
+ SBP2_INFO("reset requested");
- if (sbp2util_node_is_available(scsi_id)) {
- SBP2_ERR("Generating sbp2 fetch agent reset");
- sbp2_agent_reset(scsi_id, 1);
+ if (sbp2util_node_is_available(lu)) {
+ SBP2_INFO("generating sbp2 fetch agent reset");
+ sbp2_agent_reset(lu, 1);
}
return SUCCESS;
@@ -2622,90 +2102,50 @@
char *buf)
{
struct scsi_device *sdev;
- struct scsi_id_instance_data *scsi_id;
- int lun;
+ struct sbp2_lu *lu;
if (!(sdev = to_scsi_device(dev)))
return 0;
- if (!(scsi_id = (struct scsi_id_instance_data *)sdev->host->hostdata[0]))
+ if (!(lu = (struct sbp2_lu *)sdev->host->hostdata[0]))
return 0;
- lun = ORB_SET_LUN(scsi_id->sbp2_lun);
-
- return sprintf(buf, "%016Lx:%d:%d\n", (unsigned long long)scsi_id->ne->guid,
- scsi_id->ud->id, lun);
+ return sprintf(buf, "%016Lx:%d:%d\n", (unsigned long long)lu->ne->guid,
+ lu->ud->id, ORB_SET_LUN(lu->lun));
}
-static DEVICE_ATTR(ieee1394_id, S_IRUGO, sbp2_sysfs_ieee1394_id_show, NULL);
-
-static struct device_attribute *sbp2_sysfs_sdev_attrs[] = {
- &dev_attr_ieee1394_id,
- NULL
-};
MODULE_AUTHOR("Ben Collins <bcollins@debian.org>");
MODULE_DESCRIPTION("IEEE-1394 SBP-2 protocol driver");
MODULE_SUPPORTED_DEVICE(SBP2_DEVICE_NAME);
MODULE_LICENSE("GPL");
-/* SCSI host template */
-static struct scsi_host_template scsi_driver_template = {
- .module = THIS_MODULE,
- .name = "SBP-2 IEEE-1394",
- .proc_name = SBP2_DEVICE_NAME,
- .queuecommand = sbp2scsi_queuecommand,
- .eh_abort_handler = sbp2scsi_abort,
- .eh_device_reset_handler = sbp2scsi_reset,
- .slave_alloc = sbp2scsi_slave_alloc,
- .slave_configure = sbp2scsi_slave_configure,
- .slave_destroy = sbp2scsi_slave_destroy,
- .this_id = -1,
- .sg_tablesize = SG_ALL,
- .use_clustering = ENABLE_CLUSTERING,
- .cmd_per_lun = SBP2_MAX_CMDS,
- .can_queue = SBP2_MAX_CMDS,
- .emulated = 1,
- .sdev_attrs = sbp2_sysfs_sdev_attrs,
-};
-
static int sbp2_module_init(void)
{
int ret;
- SBP2_DEBUG_ENTER();
-
- /* Module load debug option to force one command at a time (serializing I/O) */
- if (serialize_io) {
- SBP2_INFO("Driver forced to serialize I/O (serialize_io=1)");
- SBP2_INFO("Try serialize_io=0 for better performance");
- scsi_driver_template.can_queue = 1;
- scsi_driver_template.cmd_per_lun = 1;
+ if (sbp2_serialize_io) {
+ sbp2_shost_template.can_queue = 1;
+ sbp2_shost_template.cmd_per_lun = 1;
}
if (sbp2_default_workarounds & SBP2_WORKAROUND_128K_MAX_TRANS &&
- (max_sectors * 512) > (128 * 1024))
- max_sectors = 128 * 1024 / 512;
- scsi_driver_template.max_sectors = max_sectors;
+ (sbp2_max_sectors * 512) > (128 * 1024))
+ sbp2_max_sectors = 128 * 1024 / 512;
+ sbp2_shost_template.max_sectors = sbp2_max_sectors;
- /* Register our high level driver with 1394 stack */
hpsb_register_highlevel(&sbp2_highlevel);
-
ret = hpsb_register_protocol(&sbp2_driver);
if (ret) {
SBP2_ERR("Failed to register protocol");
hpsb_unregister_highlevel(&sbp2_highlevel);
return ret;
}
-
return 0;
}
static void __exit sbp2_module_exit(void)
{
- SBP2_DEBUG_ENTER();
-
hpsb_unregister_protocol(&sbp2_driver);
-
hpsb_unregister_highlevel(&sbp2_highlevel);
}
diff --git a/drivers/ieee1394/sbp2.h b/drivers/ieee1394/sbp2.h
index 1b16d6b..9ae8423 100644
--- a/drivers/ieee1394/sbp2.h
+++ b/drivers/ieee1394/sbp2.h
@@ -25,25 +25,25 @@
#define SBP2_DEVICE_NAME "sbp2"
/*
- * SBP2 specific structures and defines
+ * SBP-2 specific definitions
*/
-#define ORB_DIRECTION_WRITE_TO_MEDIA 0x0
-#define ORB_DIRECTION_READ_FROM_MEDIA 0x1
-#define ORB_DIRECTION_NO_DATA_TRANSFER 0x2
+#define ORB_DIRECTION_WRITE_TO_MEDIA 0x0
+#define ORB_DIRECTION_READ_FROM_MEDIA 0x1
+#define ORB_DIRECTION_NO_DATA_TRANSFER 0x2
-#define ORB_SET_NULL_PTR(value) ((value & 0x1) << 31)
-#define ORB_SET_NOTIFY(value) ((value & 0x1) << 31)
-#define ORB_SET_RQ_FMT(value) ((value & 0x3) << 29) /* unused ? */
-#define ORB_SET_NODE_ID(value) ((value & 0xffff) << 16)
-#define ORB_SET_STATUS_FIFO_HI(value, id) (value >> 32 | ORB_SET_NODE_ID(id))
-#define ORB_SET_STATUS_FIFO_LO(value) (value & 0xffffffff)
-#define ORB_SET_DATA_SIZE(value) (value & 0xffff)
-#define ORB_SET_PAGE_SIZE(value) ((value & 0x7) << 16)
-#define ORB_SET_PAGE_TABLE_PRESENT(value) ((value & 0x1) << 19)
-#define ORB_SET_MAX_PAYLOAD(value) ((value & 0xf) << 20)
-#define ORB_SET_SPEED(value) ((value & 0x7) << 24)
-#define ORB_SET_DIRECTION(value) ((value & 0x1) << 27)
+#define ORB_SET_NULL_PTR(v) (((v) & 0x1) << 31)
+#define ORB_SET_NOTIFY(v) (((v) & 0x1) << 31)
+#define ORB_SET_RQ_FMT(v) (((v) & 0x3) << 29)
+#define ORB_SET_NODE_ID(v) (((v) & 0xffff) << 16)
+#define ORB_SET_STATUS_FIFO_HI(v, id) ((v) >> 32 | ORB_SET_NODE_ID(id))
+#define ORB_SET_STATUS_FIFO_LO(v) ((v) & 0xffffffff)
+#define ORB_SET_DATA_SIZE(v) ((v) & 0xffff)
+#define ORB_SET_PAGE_SIZE(v) (((v) & 0x7) << 16)
+#define ORB_SET_PAGE_TABLE_PRESENT(v) (((v) & 0x1) << 19)
+#define ORB_SET_MAX_PAYLOAD(v) (((v) & 0xf) << 20)
+#define ORB_SET_SPEED(v) (((v) & 0x7) << 24)
+#define ORB_SET_DIRECTION(v) (((v) & 0x1) << 27)
struct sbp2_command_orb {
u32 next_ORB_hi;
@@ -64,12 +64,12 @@
#define SBP2_LOGICAL_UNIT_RESET 0xe
#define SBP2_TARGET_RESET_REQUEST 0xf
-#define ORB_SET_LUN(value) (value & 0xffff)
-#define ORB_SET_FUNCTION(value) ((value & 0xf) << 16)
-#define ORB_SET_RECONNECT(value) ((value & 0xf) << 20)
-#define ORB_SET_EXCLUSIVE(value) ((value & 0x1) << 28)
-#define ORB_SET_LOGIN_RESP_LENGTH(value) (value & 0xffff)
-#define ORB_SET_PASSWD_LENGTH(value) ((value & 0xffff) << 16)
+#define ORB_SET_LUN(v) ((v) & 0xffff)
+#define ORB_SET_FUNCTION(v) (((v) & 0xf) << 16)
+#define ORB_SET_RECONNECT(v) (((v) & 0xf) << 20)
+#define ORB_SET_EXCLUSIVE(v) (((v) & 0x1) << 28)
+#define ORB_SET_LOGIN_RESP_LENGTH(v) ((v) & 0xffff)
+#define ORB_SET_PASSWD_LENGTH(v) (((v) & 0xffff) << 16)
struct sbp2_login_orb {
u32 password_hi;
@@ -82,9 +82,9 @@
u32 status_fifo_lo;
} __attribute__((packed));
-#define RESPONSE_GET_LOGIN_ID(value) (value & 0xffff)
-#define RESPONSE_GET_LENGTH(value) ((value >> 16) & 0xffff)
-#define RESPONSE_GET_RECONNECT_HOLD(value) (value & 0xffff)
+#define RESPONSE_GET_LOGIN_ID(v) ((v) & 0xffff)
+#define RESPONSE_GET_LENGTH(v) (((v) >> 16) & 0xffff)
+#define RESPONSE_GET_RECONNECT_HOLD(v) ((v) & 0xffff)
struct sbp2_login_response {
u32 length_login_ID;
@@ -93,9 +93,8 @@
u32 reconnect_hold;
} __attribute__((packed));
-#define ORB_SET_LOGIN_ID(value) (value & 0xffff)
-
-#define ORB_SET_QUERY_LOGINS_RESP_LENGTH(value) (value & 0xffff)
+#define ORB_SET_LOGIN_ID(v) ((v) & 0xffff)
+#define ORB_SET_QUERY_LOGINS_RESP_LENGTH(v) ((v) & 0xffff)
struct sbp2_query_logins_orb {
u32 reserved1;
@@ -108,8 +107,8 @@
u32 status_fifo_lo;
} __attribute__((packed));
-#define RESPONSE_GET_MAX_LOGINS(value) (value & 0xffff)
-#define RESPONSE_GET_ACTIVE_LOGINS(value) ((RESPONSE_GET_LENGTH(value) - 4) / 12)
+#define RESPONSE_GET_MAX_LOGINS(v) ((v) & 0xffff)
+#define RESPONSE_GET_ACTIVE_LOGINS(v) ((RESPONSE_GET_LENGTH((v)) - 4) / 12)
struct sbp2_query_logins_response {
u32 length_max_logins;
@@ -140,8 +139,8 @@
u32 status_fifo_lo;
} __attribute__((packed));
-#define PAGE_TABLE_SET_SEGMENT_BASE_HI(value) (value & 0xffff)
-#define PAGE_TABLE_SET_SEGMENT_LENGTH(value) ((value & 0xffff) << 16)
+#define PAGE_TABLE_SET_SEGMENT_BASE_HI(v) ((v) & 0xffff)
+#define PAGE_TABLE_SET_SEGMENT_LENGTH(v) (((v) & 0xffff) << 16)
struct sbp2_unrestricted_page_table {
u32 length_segment_base_hi;
@@ -171,23 +170,14 @@
#define SFMT_DEFERRED_ERROR 0x1
#define SFMT_VENDOR_DEPENDENT_STATUS 0x3
-#define SBP2_SCSI_STATUS_GOOD 0x0
-#define SBP2_SCSI_STATUS_CHECK_CONDITION 0x2
-#define SBP2_SCSI_STATUS_CONDITION_MET 0x4
-#define SBP2_SCSI_STATUS_BUSY 0x8
-#define SBP2_SCSI_STATUS_RESERVATION_CONFLICT 0x18
-#define SBP2_SCSI_STATUS_COMMAND_TERMINATED 0x22
-
-#define SBP2_SCSI_STATUS_SELECTION_TIMEOUT 0xff
-
-#define STATUS_GET_SRC(value) (((value) >> 30) & 0x3)
-#define STATUS_GET_RESP(value) (((value) >> 28) & 0x3)
-#define STATUS_GET_LEN(value) (((value) >> 24) & 0x7)
-#define STATUS_GET_SBP_STATUS(value) (((value) >> 16) & 0xff)
-#define STATUS_GET_ORB_OFFSET_HI(value) ((value) & 0x0000ffff)
-#define STATUS_TEST_DEAD(value) ((value) & 0x08000000)
+#define STATUS_GET_SRC(v) (((v) >> 30) & 0x3)
+#define STATUS_GET_RESP(v) (((v) >> 28) & 0x3)
+#define STATUS_GET_LEN(v) (((v) >> 24) & 0x7)
+#define STATUS_GET_SBP_STATUS(v) (((v) >> 16) & 0xff)
+#define STATUS_GET_ORB_OFFSET_HI(v) ((v) & 0x0000ffff)
+#define STATUS_TEST_DEAD(v) ((v) & 0x08000000)
/* test 'resp' | 'dead' | 'sbp2_status' */
-#define STATUS_TEST_RDS(value) ((value) & 0x38ff0000)
+#define STATUS_TEST_RDS(v) ((v) & 0x38ff0000)
struct sbp2_status_block {
u32 ORB_offset_hi_misc;
@@ -195,66 +185,70 @@
u8 command_set_dependent[24];
} __attribute__((packed));
-/*
- * Miscellaneous SBP2 related config rom defines
- */
-
-#define SBP2_UNIT_DIRECTORY_OFFSET_KEY 0xd1
-#define SBP2_CSR_OFFSET_KEY 0x54
-#define SBP2_UNIT_SPEC_ID_KEY 0x12
-#define SBP2_UNIT_SW_VERSION_KEY 0x13
-#define SBP2_COMMAND_SET_SPEC_ID_KEY 0x38
-#define SBP2_COMMAND_SET_KEY 0x39
-#define SBP2_UNIT_CHARACTERISTICS_KEY 0x3a
-#define SBP2_DEVICE_TYPE_AND_LUN_KEY 0x14
-#define SBP2_FIRMWARE_REVISION_KEY 0x3c
-
-#define SBP2_AGENT_STATE_OFFSET 0x00ULL
-#define SBP2_AGENT_RESET_OFFSET 0x04ULL
-#define SBP2_ORB_POINTER_OFFSET 0x08ULL
-#define SBP2_DOORBELL_OFFSET 0x10ULL
-#define SBP2_UNSOLICITED_STATUS_ENABLE_OFFSET 0x14ULL
-#define SBP2_UNSOLICITED_STATUS_VALUE 0xf
-
-#define SBP2_BUSY_TIMEOUT_ADDRESS 0xfffff0000210ULL
-#define SBP2_BUSY_TIMEOUT_VALUE 0xf
-
-#define SBP2_AGENT_RESET_DATA 0xf
/*
- * Unit spec id and sw version entry for SBP-2 devices
+ * SBP2 related configuration ROM definitions
*/
-#define SBP2_UNIT_SPEC_ID_ENTRY 0x0000609e
-#define SBP2_SW_VERSION_ENTRY 0x00010483
+#define SBP2_UNIT_DIRECTORY_OFFSET_KEY 0xd1
+#define SBP2_CSR_OFFSET_KEY 0x54
+#define SBP2_UNIT_SPEC_ID_KEY 0x12
+#define SBP2_UNIT_SW_VERSION_KEY 0x13
+#define SBP2_COMMAND_SET_SPEC_ID_KEY 0x38
+#define SBP2_COMMAND_SET_KEY 0x39
+#define SBP2_UNIT_CHARACTERISTICS_KEY 0x3a
+#define SBP2_DEVICE_TYPE_AND_LUN_KEY 0x14
+#define SBP2_FIRMWARE_REVISION_KEY 0x3c
+
+#define SBP2_AGENT_STATE_OFFSET 0x00ULL
+#define SBP2_AGENT_RESET_OFFSET 0x04ULL
+#define SBP2_ORB_POINTER_OFFSET 0x08ULL
+#define SBP2_DOORBELL_OFFSET 0x10ULL
+#define SBP2_UNSOLICITED_STATUS_ENABLE_OFFSET 0x14ULL
+#define SBP2_UNSOLICITED_STATUS_VALUE 0xf
+
+#define SBP2_BUSY_TIMEOUT_ADDRESS 0xfffff0000210ULL
+/* biggest possible value for Single Phase Retry count is 0xf */
+#define SBP2_BUSY_TIMEOUT_VALUE 0xf
+
+#define SBP2_AGENT_RESET_DATA 0xf
+
+#define SBP2_UNIT_SPEC_ID_ENTRY 0x0000609e
+#define SBP2_SW_VERSION_ENTRY 0x00010483
+
/*
- * SCSI specific stuff
+ * SCSI specific definitions
*/
-#define SBP2_MAX_SG_ELEMENT_LENGTH 0xf000
-#define SBP2_MAX_SECTORS 255 /* Max sectors supported */
-#define SBP2_MAX_CMDS 8 /* This should be safe */
+#define SBP2_MAX_SG_ELEMENT_LENGTH 0xf000
+#define SBP2_MAX_SECTORS 255
+/* There is no real limitation of the queue depth (i.e. length of the linked
+ * list of command ORBs) at the target. The chosen depth is merely an
+ * implementation detail of the sbp2 driver. */
+#define SBP2_MAX_CMDS 8
-/* Flags for detected oddities and brokeness */
-#define SBP2_WORKAROUND_128K_MAX_TRANS 0x1
-#define SBP2_WORKAROUND_INQUIRY_36 0x2
-#define SBP2_WORKAROUND_MODE_SENSE_8 0x4
-#define SBP2_WORKAROUND_FIX_CAPACITY 0x8
-#define SBP2_WORKAROUND_OVERRIDE 0x100
+#define SBP2_SCSI_STATUS_GOOD 0x0
+#define SBP2_SCSI_STATUS_CHECK_CONDITION 0x2
+#define SBP2_SCSI_STATUS_CONDITION_MET 0x4
+#define SBP2_SCSI_STATUS_BUSY 0x8
+#define SBP2_SCSI_STATUS_RESERVATION_CONFLICT 0x18
+#define SBP2_SCSI_STATUS_COMMAND_TERMINATED 0x22
+#define SBP2_SCSI_STATUS_SELECTION_TIMEOUT 0xff
-/* This is the two dma types we use for cmd_dma below */
-enum cmd_dma_types {
+
+/*
+ * Representations of commands and devices
+ */
+
+enum sbp2_dma_types {
CMD_DMA_NONE,
CMD_DMA_PAGE,
CMD_DMA_SINGLE
};
-/*
- * Encapsulates all the info necessary for an outstanding command.
- */
+/* Per SCSI command */
struct sbp2_command_info {
-
struct list_head list;
struct sbp2_command_orb command_orb ____cacheline_aligned;
dma_addr_t command_orb_dma ____cacheline_aligned;
@@ -262,25 +256,25 @@
void (*Current_done)(struct scsi_cmnd *);
/* Also need s/g structure for each sbp2 command */
- struct sbp2_unrestricted_page_table scatter_gather_element[SG_ALL] ____cacheline_aligned;
+ struct sbp2_unrestricted_page_table
+ scatter_gather_element[SG_ALL] ____cacheline_aligned;
dma_addr_t sge_dma ____cacheline_aligned;
void *sge_buffer;
dma_addr_t cmd_dma;
- enum cmd_dma_types dma_type;
+ enum sbp2_dma_types dma_type;
unsigned long dma_size;
- int dma_dir;
-
+ enum dma_data_direction dma_dir;
};
-struct sbp2scsi_host_info;
+/* Per FireWire host */
+struct sbp2_fwhost_info {
+ struct hpsb_host *host;
+ struct list_head logical_units;
+};
-/*
- * Information needed on a per scsi id basis (one for each sbp2 device)
- */
-struct scsi_id_instance_data {
- /*
- * Various sbp2 specific structures
- */
+/* Per logical unit */
+struct sbp2_lu {
+ /* Operation request blocks */
struct sbp2_command_orb *last_orb;
dma_addr_t last_orb_dma;
struct sbp2_login_orb *login_orb;
@@ -297,116 +291,59 @@
dma_addr_t logout_orb_dma;
struct sbp2_status_block status_block;
- /*
- * Stuff we need to know about the sbp2 device itself
- */
- u64 sbp2_management_agent_addr;
- u64 sbp2_command_block_agent_addr;
+ /* How to talk to the unit */
+ u64 management_agent_addr;
+ u64 command_block_agent_addr;
u32 speed_code;
u32 max_payload_size;
+ u16 lun;
- /*
- * Values pulled from the device's unit directory
- */
- u32 sbp2_command_set_spec_id;
- u32 sbp2_command_set;
- u32 sbp2_unit_characteristics;
- u32 sbp2_lun;
- u32 sbp2_firmware_revision;
-
- /*
- * Address for the device to write status blocks to
- */
+ /* Address for the unit to write status blocks to */
u64 status_fifo_addr;
- /*
- * Waitqueue flag for logins, reconnects, logouts, query logins
- */
- int access_complete:1;
+ /* Waitqueue flag for logins, reconnects, logouts, query logins */
+ unsigned int access_complete:1;
- /*
- * Pool of command orbs, so we can have more than overlapped command per id
- */
- spinlock_t sbp2_command_orb_lock;
- struct list_head sbp2_command_orb_inuse;
- struct list_head sbp2_command_orb_completed;
+ /* Pool of command ORBs for this logical unit */
+ spinlock_t cmd_orb_lock;
+ struct list_head cmd_orb_inuse;
+ struct list_head cmd_orb_completed;
- struct list_head scsi_list;
+ /* Backlink to FireWire host; list of units attached to the host */
+ struct sbp2_fwhost_info *hi;
+ struct list_head lu_list;
- /* Node entry, as retrieved from NodeMgr entries */
+ /* IEEE 1394 core's device representations */
struct node_entry *ne;
struct unit_directory *ud;
- /* A backlink to our host_info */
- struct sbp2scsi_host_info *hi;
-
- /* SCSI related pointers */
+ /* SCSI core's device representations */
struct scsi_device *sdev;
- struct Scsi_Host *scsi_host;
+ struct Scsi_Host *shost;
/* Device specific workarounds/brokeness */
unsigned workarounds;
+ /* Connection state */
atomic_t state;
- struct delayed_work protocol_work;
+
+ /* For deferred requests to the fetch agent */
+ struct work_struct protocol_work;
};
-/* For use in scsi_id_instance_data.state */
+/* For use in sbp2_lu.state */
enum sbp2lu_state_types {
SBP2LU_STATE_RUNNING, /* all normal */
SBP2LU_STATE_IN_RESET, /* between bus reset and reconnect */
SBP2LU_STATE_IN_SHUTDOWN /* when sbp2_remove was called */
};
-/* Sbp2 host data structure (one per IEEE1394 host) */
-struct sbp2scsi_host_info {
- struct hpsb_host *host; /* IEEE1394 host */
- struct list_head scsi_ids; /* List of scsi ids on this host */
-};
-
-/*
- * Function prototypes
- */
-
-/*
- * Various utility prototypes
- */
-static int sbp2util_create_command_orb_pool(struct scsi_id_instance_data *scsi_id);
-static void sbp2util_remove_command_orb_pool(struct scsi_id_instance_data *scsi_id);
-static struct sbp2_command_info *sbp2util_find_command_for_orb(struct scsi_id_instance_data *scsi_id, dma_addr_t orb);
-static struct sbp2_command_info *sbp2util_find_command_for_SCpnt(struct scsi_id_instance_data *scsi_id, void *SCpnt);
-static struct sbp2_command_info *sbp2util_allocate_command_orb(struct scsi_id_instance_data *scsi_id,
- struct scsi_cmnd *Current_SCpnt,
- void (*Current_done)(struct scsi_cmnd *));
-static void sbp2util_mark_command_completed(struct scsi_id_instance_data *scsi_id,
- struct sbp2_command_info *command);
-
-
-static int sbp2_start_device(struct scsi_id_instance_data *scsi_id);
-static void sbp2_remove_device(struct scsi_id_instance_data *scsi_id);
-
-#ifdef CONFIG_IEEE1394_SBP2_PHYS_DMA
-static int sbp2_handle_physdma_write(struct hpsb_host *host, int nodeid, int destid, quadlet_t *data,
- u64 addr, size_t length, u16 flags);
-static int sbp2_handle_physdma_read(struct hpsb_host *host, int nodeid, quadlet_t *data,
- u64 addr, size_t length, u16 flags);
-#endif
-
-/*
- * SBP-2 protocol related prototypes
- */
-static int sbp2_query_logins(struct scsi_id_instance_data *scsi_id);
-static int sbp2_login_device(struct scsi_id_instance_data *scsi_id);
-static int sbp2_reconnect_device(struct scsi_id_instance_data *scsi_id);
-static int sbp2_logout_device(struct scsi_id_instance_data *scsi_id);
-static int sbp2_handle_status_write(struct hpsb_host *host, int nodeid, int destid,
- quadlet_t *data, u64 addr, size_t length, u16 flags);
-static int sbp2_agent_reset(struct scsi_id_instance_data *scsi_id, int wait);
-static unsigned int sbp2_status_to_sense_data(unchar *sbp2_status,
- unchar *sense_data);
-static void sbp2_parse_unit_directory(struct scsi_id_instance_data *scsi_id,
- struct unit_directory *ud);
-static int sbp2_set_busy_timeout(struct scsi_id_instance_data *scsi_id);
-static int sbp2_max_speed_and_size(struct scsi_id_instance_data *scsi_id);
+/* For use in sbp2_lu.workarounds and in the corresponding
+ * module load parameter */
+#define SBP2_WORKAROUND_128K_MAX_TRANS 0x1
+#define SBP2_WORKAROUND_INQUIRY_36 0x2
+#define SBP2_WORKAROUND_MODE_SENSE_8 0x4
+#define SBP2_WORKAROUND_FIX_CAPACITY 0x8
+#define SBP2_WORKAROUND_OVERRIDE 0x100
#endif /* SBP2_H */
diff --git a/drivers/ieee1394/video1394.c b/drivers/ieee1394/video1394.c
index 9bc6505..598b19f 100644
--- a/drivers/ieee1394/video1394.c
+++ b/drivers/ieee1394/video1394.c
@@ -714,8 +714,8 @@
return ret;
}
-static int __video1394_ioctl(struct file *file,
- unsigned int cmd, unsigned long arg)
+static long video1394_ioctl(struct file *file,
+ unsigned int cmd, unsigned long arg)
{
struct file_ctx *ctx = (struct file_ctx *)file->private_data;
struct ti_ohci *ohci = ctx->ohci;
@@ -884,13 +884,14 @@
struct dma_iso_ctx *d;
int next_prg;
- if (copy_from_user(&v, argp, sizeof(v)))
+ if (unlikely(copy_from_user(&v, argp, sizeof(v))))
return -EFAULT;
d = find_ctx(&ctx->context_list, OHCI_ISO_RECEIVE, v.channel);
- if (d == NULL) return -EFAULT;
+ if (unlikely(d == NULL))
+ return -EFAULT;
- if ((v.buffer<0) || (v.buffer>=d->num_desc - 1)) {
+ if (unlikely((v.buffer<0) || (v.buffer>=d->num_desc - 1))) {
PRINT(KERN_ERR, ohci->host->id,
"Buffer %d out of range",v.buffer);
return -EINVAL;
@@ -898,7 +899,7 @@
spin_lock_irqsave(&d->lock,flags);
- if (d->buffer_status[v.buffer]==VIDEO1394_BUFFER_QUEUED) {
+ if (unlikely(d->buffer_status[v.buffer]==VIDEO1394_BUFFER_QUEUED)) {
PRINT(KERN_ERR, ohci->host->id,
"Buffer %d is already used",v.buffer);
spin_unlock_irqrestore(&d->lock,flags);
@@ -949,13 +950,14 @@
struct dma_iso_ctx *d;
int i = 0;
- if (copy_from_user(&v, argp, sizeof(v)))
+ if (unlikely(copy_from_user(&v, argp, sizeof(v))))
return -EFAULT;
d = find_ctx(&ctx->context_list, OHCI_ISO_RECEIVE, v.channel);
- if (d == NULL) return -EFAULT;
+ if (unlikely(d == NULL))
+ return -EFAULT;
- if ((v.buffer<0) || (v.buffer>d->num_desc - 1)) {
+ if (unlikely((v.buffer<0) || (v.buffer>d->num_desc - 1))) {
PRINT(KERN_ERR, ohci->host->id,
"Buffer %d out of range",v.buffer);
return -EINVAL;
@@ -1008,7 +1010,7 @@
spin_unlock_irqrestore(&d->lock, flags);
v.buffer=i;
- if (copy_to_user(argp, &v, sizeof(v)))
+ if (unlikely(copy_to_user(argp, &v, sizeof(v))))
return -EFAULT;
return 0;
@@ -1156,15 +1158,6 @@
}
}
-static long video1394_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
-{
- int err;
- lock_kernel();
- err = __video1394_ioctl(file, cmd, arg);
- unlock_kernel();
- return err;
-}
-
/*
* This maps the vmalloced and reserved buffer to user space.
*
@@ -1177,17 +1170,14 @@
static int video1394_mmap(struct file *file, struct vm_area_struct *vma)
{
struct file_ctx *ctx = (struct file_ctx *)file->private_data;
- int res = -EINVAL;
- lock_kernel();
if (ctx->current_ctx == NULL) {
PRINT(KERN_ERR, ctx->ohci->host->id,
"Current iso context not set");
- } else
- res = dma_region_mmap(&ctx->current_ctx->dma, file, vma);
- unlock_kernel();
+ return -EINVAL;
+ }
- return res;
+ return dma_region_mmap(&ctx->current_ctx->dma, file, vma);
}
static unsigned int video1394_poll(struct file *file, poll_table *pt)
@@ -1198,14 +1188,12 @@
struct dma_iso_ctx *d;
int i;
- lock_kernel();
ctx = file->private_data;
d = ctx->current_ctx;
if (d == NULL) {
PRINT(KERN_ERR, ctx->ohci->host->id,
"Current iso context not set");
- mask = POLLERR;
- goto done;
+ return POLLERR;
}
poll_wait(file, &d->waitq, pt);
@@ -1218,8 +1206,6 @@
}
}
spin_unlock_irqrestore(&d->lock, flags);
-done:
- unlock_kernel();
return mask;
}
@@ -1255,7 +1241,6 @@
struct list_head *lh, *next;
u64 mask;
- lock_kernel();
list_for_each_safe(lh, next, &ctx->context_list) {
struct dma_iso_ctx *d;
d = list_entry(lh, struct dma_iso_ctx, link);
@@ -1276,7 +1261,6 @@
kfree(ctx);
file->private_data = NULL;
- unlock_kernel();
return 0;
}
@@ -1324,12 +1308,8 @@
MODULE_DEVICE_TABLE(ieee1394, video1394_id_table);
static struct hpsb_protocol_driver video1394_driver = {
- .name = "1394 Digital Camera Driver",
+ .name = VIDEO1394_DRIVER_NAME,
.id_table = video1394_id_table,
- .driver = {
- .name = VIDEO1394_DRIVER_NAME,
- .bus = &ieee1394_bus_type,
- },
};