Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/net/wireless/orinoco_cs.c b/drivers/net/wireless/orinoco_cs.c
new file mode 100644
index 0000000..74a8227
--- /dev/null
+++ b/drivers/net/wireless/orinoco_cs.c
@@ -0,0 +1,636 @@
+/* orinoco_cs.c (formerly known as dldwd_cs.c)
+ *
+ * A driver for "Hermes" chipset based PCMCIA wireless adaptors, such
+ * as the Lucent WavelanIEEE/Orinoco cards and their OEM (Cabletron/
+ * EnteraSys RoamAbout 802.11, ELSA Airlancer, Melco Buffalo and others).
+ * It should also be usable on various Prism II based cards such as the
+ * Linksys, D-Link and Farallon Skyline. It should also work on Symbol
+ * cards such as the 3Com AirConnect and Ericsson WLAN.
+ *
+ * Copyright notice & release notes in file orinoco.c
+ */
+
+#define DRIVER_NAME "orinoco_cs"
+#define PFX DRIVER_NAME ": "
+
+#include <linux/config.h>
+#ifdef __IN_PCMCIA_PACKAGE__
+#include <pcmcia/k_compat.h>
+#endif /* __IN_PCMCIA_PACKAGE__ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/sched.h>
+#include <linux/ptrace.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/ioport.h>
+#include <linux/netdevice.h>
+#include <linux/if_arp.h>
+#include <linux/etherdevice.h>
+#include <linux/wireless.h>
+
+#include <pcmcia/version.h>
+#include <pcmcia/cs_types.h>
+#include <pcmcia/cs.h>
+#include <pcmcia/cistpl.h>
+#include <pcmcia/cisreg.h>
+#include <pcmcia/ds.h>
+
+#include <asm/uaccess.h>
+#include <asm/io.h>
+#include <asm/system.h>
+
+#include "orinoco.h"
+
+/********************************************************************/
+/* Module stuff */
+/********************************************************************/
+
+MODULE_AUTHOR("David Gibson <hermes@gibson.dropbear.id.au>");
+MODULE_DESCRIPTION("Driver for PCMCIA Lucent Orinoco, Prism II based and similar wireless cards");
+MODULE_LICENSE("Dual MPL/GPL");
+
+/* Module parameters */
+
+/* Some D-Link cards have buggy CIS. They do work at 5v properly, but
+ * don't have any CIS entry for it. This workaround it... */
+static int ignore_cis_vcc; /* = 0 */
+module_param(ignore_cis_vcc, int, 0);
+MODULE_PARM_DESC(ignore_cis_vcc, "Allow voltage mismatch between card and socket");
+
+/********************************************************************/
+/* Magic constants */
+/********************************************************************/
+
+/*
+ * The dev_info variable is the "key" that is used to match up this
+ * device driver with appropriate cards, through the card
+ * configuration database.
+ */
+static dev_info_t dev_info = DRIVER_NAME;
+
+/********************************************************************/
+/* Data structures */
+/********************************************************************/
+
+/* PCMCIA specific device information (goes in the card field of
+ * struct orinoco_private */
+struct orinoco_pccard {
+ dev_link_t link;
+ dev_node_t node;
+
+ /* Used to handle hard reset */
+ /* yuck, we need this hack to work around the insanity of the
+ * PCMCIA layer */
+ unsigned long hard_reset_in_progress;
+};
+
+/*
+ * A linked list of "instances" of the device. Each actual PCMCIA
+ * card corresponds to one device instance, and is described by one
+ * dev_link_t structure (defined in ds.h).
+ */
+static dev_link_t *dev_list; /* = NULL */
+
+/********************************************************************/
+/* Function prototypes */
+/********************************************************************/
+
+/* device methods */
+static int orinoco_cs_hard_reset(struct orinoco_private *priv);
+
+/* PCMCIA gumpf */
+static void orinoco_cs_config(dev_link_t * link);
+static void orinoco_cs_release(dev_link_t * link);
+static int orinoco_cs_event(event_t event, int priority,
+ event_callback_args_t * args);
+
+static dev_link_t *orinoco_cs_attach(void);
+static void orinoco_cs_detach(dev_link_t *);
+
+/********************************************************************/
+/* Device methods */
+/********************************************************************/
+
+static int
+orinoco_cs_hard_reset(struct orinoco_private *priv)
+{
+ struct orinoco_pccard *card = priv->card;
+ dev_link_t *link = &card->link;
+ int err;
+
+ /* We need atomic ops here, because we're not holding the lock */
+ set_bit(0, &card->hard_reset_in_progress);
+
+ err = pcmcia_reset_card(link->handle, NULL);
+ if (err)
+ return err;
+
+ msleep(100);
+ clear_bit(0, &card->hard_reset_in_progress);
+
+ return 0;
+}
+
+/********************************************************************/
+/* PCMCIA stuff */
+/********************************************************************/
+
+/*
+ * This creates an "instance" of the driver, allocating local data
+ * structures for one device. The device is registered with Card
+ * Services.
+ *
+ * The dev_link structure is initialized, but we don't actually
+ * configure the card at this point -- we wait until we receive a card
+ * insertion event. */
+static dev_link_t *
+orinoco_cs_attach(void)
+{
+ struct net_device *dev;
+ struct orinoco_private *priv;
+ struct orinoco_pccard *card;
+ dev_link_t *link;
+ client_reg_t client_reg;
+ int ret;
+
+ dev = alloc_orinocodev(sizeof(*card), orinoco_cs_hard_reset);
+ if (! dev)
+ return NULL;
+ priv = netdev_priv(dev);
+ card = priv->card;
+
+ /* Link both structures together */
+ link = &card->link;
+ link->priv = dev;
+
+ /* Interrupt setup */
+ link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT;
+ link->irq.IRQInfo1 = IRQ_LEVEL_ID;
+ link->irq.Handler = orinoco_interrupt;
+ link->irq.Instance = dev;
+
+ /* General socket configuration defaults can go here. In this
+ * client, we assume very little, and rely on the CIS for
+ * almost everything. In most clients, many details (i.e.,
+ * number, sizes, and attributes of IO windows) are fixed by
+ * the nature of the device, and can be hard-wired here. */
+ link->conf.Attributes = 0;
+ link->conf.IntType = INT_MEMORY_AND_IO;
+
+ /* Register with Card Services */
+ /* FIXME: need a lock? */
+ link->next = dev_list;
+ dev_list = link;
+
+ client_reg.dev_info = &dev_info;
+ client_reg.EventMask =
+ CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL |
+ CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET |
+ CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME;
+ client_reg.event_handler = &orinoco_cs_event;
+ client_reg.Version = 0x0210; /* FIXME: what does this mean? */
+ client_reg.event_callback_args.client_data = link;
+
+ ret = pcmcia_register_client(&link->handle, &client_reg);
+ if (ret != CS_SUCCESS) {
+ cs_error(link->handle, RegisterClient, ret);
+ orinoco_cs_detach(link);
+ return NULL;
+ }
+
+ return link;
+} /* orinoco_cs_attach */
+
+/*
+ * This deletes a driver "instance". The device is de-registered with
+ * Card Services. If it has been released, all local data structures
+ * are freed. Otherwise, the structures will be freed when the device
+ * is released.
+ */
+static void orinoco_cs_detach(dev_link_t *link)
+{
+ dev_link_t **linkp;
+ struct net_device *dev = link->priv;
+
+ /* Locate device structure */
+ for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
+ if (*linkp == link)
+ break;
+
+ BUG_ON(*linkp == NULL);
+
+ if (link->state & DEV_CONFIG)
+ orinoco_cs_release(link);
+
+ /* Break the link with Card Services */
+ if (link->handle)
+ pcmcia_deregister_client(link->handle);
+
+ /* Unlink device structure, and free it */
+ *linkp = link->next;
+ DEBUG(0, PFX "detach: link=%p link->dev=%p\n", link, link->dev);
+ if (link->dev) {
+ DEBUG(0, PFX "About to unregister net device %p\n",
+ dev);
+ unregister_netdev(dev);
+ }
+ free_orinocodev(dev);
+} /* orinoco_cs_detach */
+
+/*
+ * orinoco_cs_config() is scheduled to run after a CARD_INSERTION
+ * event is received, to configure the PCMCIA socket, and to make the
+ * device available to the system.
+ */
+
+#define CS_CHECK(fn, ret) do { \
+ last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; \
+ } while (0)
+
+static void
+orinoco_cs_config(dev_link_t *link)
+{
+ struct net_device *dev = link->priv;
+ client_handle_t handle = link->handle;
+ struct orinoco_private *priv = netdev_priv(dev);
+ struct orinoco_pccard *card = priv->card;
+ hermes_t *hw = &priv->hw;
+ int last_fn, last_ret;
+ u_char buf[64];
+ config_info_t conf;
+ cisinfo_t info;
+ tuple_t tuple;
+ cisparse_t parse;
+ void __iomem *mem;
+
+ CS_CHECK(ValidateCIS, pcmcia_validate_cis(handle, &info));
+
+ /*
+ * This reads the card's CONFIG tuple to find its
+ * configuration registers.
+ */
+ tuple.DesiredTuple = CISTPL_CONFIG;
+ tuple.Attributes = 0;
+ tuple.TupleData = buf;
+ tuple.TupleDataMax = sizeof(buf);
+ tuple.TupleOffset = 0;
+ CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
+ CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
+ CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
+ link->conf.ConfigBase = parse.config.base;
+ link->conf.Present = parse.config.rmask[0];
+
+ /* Configure card */
+ link->state |= DEV_CONFIG;
+
+ /* Look up the current Vcc */
+ CS_CHECK(GetConfigurationInfo,
+ pcmcia_get_configuration_info(handle, &conf));
+ link->conf.Vcc = conf.Vcc;
+
+ /*
+ * In this loop, we scan the CIS for configuration table
+ * entries, each of which describes a valid card
+ * configuration, including voltage, IO window, memory window,
+ * and interrupt settings.
+ *
+ * We make no assumptions about the card to be configured: we
+ * use just the information available in the CIS. In an ideal
+ * world, this would work for any PCMCIA card, but it requires
+ * a complete and accurate CIS. In practice, a driver usually
+ * "knows" most of these things without consulting the CIS,
+ * and most client drivers will only use the CIS to fill in
+ * implementation-defined details.
+ */
+ tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
+ CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
+ while (1) {
+ cistpl_cftable_entry_t *cfg = &(parse.cftable_entry);
+ cistpl_cftable_entry_t dflt = { .index = 0 };
+
+ if ( (pcmcia_get_tuple_data(handle, &tuple) != 0)
+ || (pcmcia_parse_tuple(handle, &tuple, &parse) != 0))
+ goto next_entry;
+
+ if (cfg->flags & CISTPL_CFTABLE_DEFAULT)
+ dflt = *cfg;
+ if (cfg->index == 0)
+ goto next_entry;
+ link->conf.ConfigIndex = cfg->index;
+
+ /* Does this card need audio output? */
+ if (cfg->flags & CISTPL_CFTABLE_AUDIO) {
+ link->conf.Attributes |= CONF_ENABLE_SPKR;
+ link->conf.Status = CCSR_AUDIO_ENA;
+ }
+
+ /* Use power settings for Vcc and Vpp if present */
+ /* Note that the CIS values need to be rescaled */
+ if (cfg->vcc.present & (1 << CISTPL_POWER_VNOM)) {
+ if (conf.Vcc != cfg->vcc.param[CISTPL_POWER_VNOM] / 10000) {
+ DEBUG(2, "orinoco_cs_config: Vcc mismatch (conf.Vcc = %d, CIS = %d)\n", conf.Vcc, cfg->vcc.param[CISTPL_POWER_VNOM] / 10000);
+ if (!ignore_cis_vcc)
+ goto next_entry;
+ }
+ } else if (dflt.vcc.present & (1 << CISTPL_POWER_VNOM)) {
+ if (conf.Vcc != dflt.vcc.param[CISTPL_POWER_VNOM] / 10000) {
+ DEBUG(2, "orinoco_cs_config: Vcc mismatch (conf.Vcc = %d, CIS = %d)\n", conf.Vcc, dflt.vcc.param[CISTPL_POWER_VNOM] / 10000);
+ if(!ignore_cis_vcc)
+ goto next_entry;
+ }
+ }
+
+ if (cfg->vpp1.present & (1 << CISTPL_POWER_VNOM))
+ link->conf.Vpp1 = link->conf.Vpp2 =
+ cfg->vpp1.param[CISTPL_POWER_VNOM] / 10000;
+ else if (dflt.vpp1.present & (1 << CISTPL_POWER_VNOM))
+ link->conf.Vpp1 = link->conf.Vpp2 =
+ dflt.vpp1.param[CISTPL_POWER_VNOM] / 10000;
+
+ /* Do we need to allocate an interrupt? */
+ link->conf.Attributes |= CONF_ENABLE_IRQ;
+
+ /* IO window settings */
+ link->io.NumPorts1 = link->io.NumPorts2 = 0;
+ if ((cfg->io.nwin > 0) || (dflt.io.nwin > 0)) {
+ cistpl_io_t *io =
+ (cfg->io.nwin) ? &cfg->io : &dflt.io;
+ link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
+ if (!(io->flags & CISTPL_IO_8BIT))
+ link->io.Attributes1 =
+ IO_DATA_PATH_WIDTH_16;
+ if (!(io->flags & CISTPL_IO_16BIT))
+ link->io.Attributes1 =
+ IO_DATA_PATH_WIDTH_8;
+ link->io.IOAddrLines =
+ io->flags & CISTPL_IO_LINES_MASK;
+ link->io.BasePort1 = io->win[0].base;
+ link->io.NumPorts1 = io->win[0].len;
+ if (io->nwin > 1) {
+ link->io.Attributes2 =
+ link->io.Attributes1;
+ link->io.BasePort2 = io->win[1].base;
+ link->io.NumPorts2 = io->win[1].len;
+ }
+
+ /* This reserves IO space but doesn't actually enable it */
+ if (pcmcia_request_io(link->handle, &link->io) != 0)
+ goto next_entry;
+ }
+
+
+ /* If we got this far, we're cool! */
+
+ break;
+
+ next_entry:
+ if (link->io.NumPorts1)
+ pcmcia_release_io(link->handle, &link->io);
+ last_ret = pcmcia_get_next_tuple(handle, &tuple);
+ if (last_ret == CS_NO_MORE_ITEMS) {
+ printk(KERN_ERR PFX "GetNextTuple(): No matching "
+ "CIS configuration. Maybe you need the "
+ "ignore_cis_vcc=1 parameter.\n");
+ goto cs_failed;
+ }
+ }
+
+ /*
+ * Allocate an interrupt line. Note that this does not assign
+ * a handler to the interrupt, unless the 'Handler' member of
+ * the irq structure is initialized.
+ */
+ CS_CHECK(RequestIRQ, pcmcia_request_irq(link->handle, &link->irq));
+
+ /* We initialize the hermes structure before completing PCMCIA
+ * configuration just in case the interrupt handler gets
+ * called. */
+ mem = ioport_map(link->io.BasePort1, link->io.NumPorts1);
+ if (!mem)
+ goto cs_failed;
+
+ hermes_struct_init(hw, mem, HERMES_16BIT_REGSPACING);
+
+ /*
+ * This actually configures the PCMCIA socket -- setting up
+ * the I/O windows and the interrupt mapping, and putting the
+ * card and host interface into "Memory and IO" mode.
+ */
+ CS_CHECK(RequestConfiguration,
+ pcmcia_request_configuration(link->handle, &link->conf));
+
+ /* Ok, we have the configuration, prepare to register the netdev */
+ dev->base_addr = link->io.BasePort1;
+ dev->irq = link->irq.AssignedIRQ;
+ SET_MODULE_OWNER(dev);
+ card->node.major = card->node.minor = 0;
+
+ SET_NETDEV_DEV(dev, &handle_to_dev(handle));
+ /* Tell the stack we exist */
+ if (register_netdev(dev) != 0) {
+ printk(KERN_ERR PFX "register_netdev() failed\n");
+ goto failed;
+ }
+
+ /* At this point, the dev_node_t structure(s) needs to be
+ * initialized and arranged in a linked list at link->dev. */
+ strcpy(card->node.dev_name, dev->name);
+ link->dev = &card->node; /* link->dev being non-NULL is also
+ used to indicate that the
+ net_device has been registered */
+ link->state &= ~DEV_CONFIG_PENDING;
+
+ /* Finally, report what we've done */
+ printk(KERN_DEBUG "%s: index 0x%02x: Vcc %d.%d",
+ dev->name, link->conf.ConfigIndex,
+ link->conf.Vcc / 10, link->conf.Vcc % 10);
+ if (link->conf.Vpp1)
+ printk(", Vpp %d.%d", link->conf.Vpp1 / 10,
+ link->conf.Vpp1 % 10);
+ printk(", irq %d", link->irq.AssignedIRQ);
+ if (link->io.NumPorts1)
+ printk(", io 0x%04x-0x%04x", link->io.BasePort1,
+ link->io.BasePort1 + link->io.NumPorts1 - 1);
+ if (link->io.NumPorts2)
+ printk(" & 0x%04x-0x%04x", link->io.BasePort2,
+ link->io.BasePort2 + link->io.NumPorts2 - 1);
+ printk("\n");
+
+ return;
+
+ cs_failed:
+ cs_error(link->handle, last_fn, last_ret);
+
+ failed:
+ orinoco_cs_release(link);
+} /* orinoco_cs_config */
+
+/*
+ * After a card is removed, orinoco_cs_release() will unregister the
+ * device, and release the PCMCIA configuration. If the device is
+ * still open, this will be postponed until it is closed.
+ */
+static void
+orinoco_cs_release(dev_link_t *link)
+{
+ struct net_device *dev = link->priv;
+ struct orinoco_private *priv = netdev_priv(dev);
+ unsigned long flags;
+
+ /* We're committed to taking the device away now, so mark the
+ * hardware as unavailable */
+ spin_lock_irqsave(&priv->lock, flags);
+ priv->hw_unavailable++;
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ /* Don't bother checking to see if these succeed or not */
+ pcmcia_release_configuration(link->handle);
+ if (link->io.NumPorts1)
+ pcmcia_release_io(link->handle, &link->io);
+ if (link->irq.AssignedIRQ)
+ pcmcia_release_irq(link->handle, &link->irq);
+ link->state &= ~DEV_CONFIG;
+ if (priv->hw.iobase)
+ ioport_unmap(priv->hw.iobase);
+} /* orinoco_cs_release */
+
+/*
+ * The card status event handler. Mostly, this schedules other stuff
+ * to run after an event is received.
+ */
+static int
+orinoco_cs_event(event_t event, int priority,
+ event_callback_args_t * args)
+{
+ dev_link_t *link = args->client_data;
+ struct net_device *dev = link->priv;
+ struct orinoco_private *priv = netdev_priv(dev);
+ struct orinoco_pccard *card = priv->card;
+ int err = 0;
+ unsigned long flags;
+
+ switch (event) {
+ case CS_EVENT_CARD_REMOVAL:
+ link->state &= ~DEV_PRESENT;
+ if (link->state & DEV_CONFIG) {
+ unsigned long flags;
+
+ spin_lock_irqsave(&priv->lock, flags);
+ netif_device_detach(dev);
+ priv->hw_unavailable++;
+ spin_unlock_irqrestore(&priv->lock, flags);
+ }
+ break;
+
+ case CS_EVENT_CARD_INSERTION:
+ link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
+ orinoco_cs_config(link);
+ break;
+
+ case CS_EVENT_PM_SUSPEND:
+ link->state |= DEV_SUSPEND;
+ /* Fall through... */
+ case CS_EVENT_RESET_PHYSICAL:
+ /* Mark the device as stopped, to block IO until later */
+ if (link->state & DEV_CONFIG) {
+ /* This is probably racy, but I can't think of
+ a better way, short of rewriting the PCMCIA
+ layer to not suck :-( */
+ if (! test_bit(0, &card->hard_reset_in_progress)) {
+ spin_lock_irqsave(&priv->lock, flags);
+
+ err = __orinoco_down(dev);
+ if (err)
+ printk(KERN_WARNING "%s: %s: Error %d downing interface\n",
+ dev->name,
+ event == CS_EVENT_PM_SUSPEND ? "SUSPEND" : "RESET_PHYSICAL",
+ err);
+
+ netif_device_detach(dev);
+ priv->hw_unavailable++;
+
+ spin_unlock_irqrestore(&priv->lock, flags);
+ }
+
+ pcmcia_release_configuration(link->handle);
+ }
+ break;
+
+ case CS_EVENT_PM_RESUME:
+ link->state &= ~DEV_SUSPEND;
+ /* Fall through... */
+ case CS_EVENT_CARD_RESET:
+ if (link->state & DEV_CONFIG) {
+ /* FIXME: should we double check that this is
+ * the same card as we had before */
+ pcmcia_request_configuration(link->handle, &link->conf);
+
+ if (! test_bit(0, &card->hard_reset_in_progress)) {
+ err = orinoco_reinit_firmware(dev);
+ if (err) {
+ printk(KERN_ERR "%s: Error %d re-initializing firmware\n",
+ dev->name, err);
+ break;
+ }
+
+ spin_lock_irqsave(&priv->lock, flags);
+
+ netif_device_attach(dev);
+ priv->hw_unavailable--;
+
+ if (priv->open && ! priv->hw_unavailable) {
+ err = __orinoco_up(dev);
+ if (err)
+ printk(KERN_ERR "%s: Error %d restarting card\n",
+ dev->name, err);
+
+ }
+
+ spin_unlock_irqrestore(&priv->lock, flags);
+ }
+ }
+ break;
+ }
+
+ return err;
+} /* orinoco_cs_event */
+
+/********************************************************************/
+/* Module initialization */
+/********************************************************************/
+
+/* Can't be declared "const" or the whole __initdata section will
+ * become const */
+static char version[] __initdata = DRIVER_NAME " " DRIVER_VERSION
+ " (David Gibson <hermes@gibson.dropbear.id.au>, "
+ "Pavel Roskin <proski@gnu.org>, et al)";
+
+static struct pcmcia_driver orinoco_driver = {
+ .owner = THIS_MODULE,
+ .drv = {
+ .name = DRIVER_NAME,
+ },
+ .attach = orinoco_cs_attach,
+ .detach = orinoco_cs_detach,
+};
+
+static int __init
+init_orinoco_cs(void)
+{
+ printk(KERN_DEBUG "%s\n", version);
+
+ return pcmcia_register_driver(&orinoco_driver);
+}
+
+static void __exit
+exit_orinoco_cs(void)
+{
+ pcmcia_unregister_driver(&orinoco_driver);
+ BUG_ON(dev_list != NULL);
+}
+
+module_init(init_orinoco_cs);
+module_exit(exit_orinoco_cs);