drivers/net/wireless/orinoco_cs.c

   1 /* orinoco_cs.c 0.13e   - (formerly known as dldwd_cs.c)
   2  *
   3  * A driver for "Hermes" chipset based PCMCIA wireless adaptors, such
   4  * as the Lucent WavelanIEEE/Orinoco cards and their OEM (Cabletron/
   5  * EnteraSys RoamAbout 802.11, ELSA Airlancer, Melco Buffalo and others).
   6  * It should also be usable on various Prism II based cards such as the
   7  * Linksys, D-Link and Farallon Skyline. It should also work on Symbol
   8  * cards such as the 3Com AirConnect and Ericsson WLAN.
   9  *
  10  * Copyright notice & release notes in file orinoco.c
  11  */
  12
  13 #include <linux/config.h>
  14 #ifdef  __IN_PCMCIA_PACKAGE__
  15 #include <pcmcia/k_compat.h>
  16 #endif /* __IN_PCMCIA_PACKAGE__ */
  17
  18 #include <linux/module.h>
  19 #include <linux/kernel.h>
  20 #include <linux/init.h>
  21 #include <linux/sched.h>
  22 #include <linux/ptrace.h>
  23 #include <linux/slab.h>
  24 #include <linux/string.h>
  25 #include <linux/ioport.h>
  26 #include <linux/netdevice.h>
  27 #include <linux/if_arp.h>
  28 #include <linux/etherdevice.h>
  29 #include <linux/wireless.h>
  30
  31 #include <pcmcia/version.h>
  32 #include <pcmcia/cs_types.h>
  33 #include <pcmcia/cs.h>
  34 #include <pcmcia/cistpl.h>
  35 #include <pcmcia/cisreg.h>
  36 #include <pcmcia/ds.h>
  37
  38 #include <asm/uaccess.h>
  39 #include <asm/io.h>
  40 #include <asm/system.h>
  41
  42 #include "orinoco.h"
  43
  44 /********************************************************************/
  45 /* Module stuff                                                     */
  46 /********************************************************************/
  47
  48 MODULE_AUTHOR("David Gibson <hermes@gibson.dropbear.id.au>");
  49 MODULE_DESCRIPTION("Driver for PCMCIA Lucent Orinoco, Prism II based and similar wireless cards");
  50 #ifdef MODULE_LICENSE
  51 MODULE_LICENSE("Dual MPL/GPL");
  52 #endif
  53
  54 /* Module parameters */
  55
  56 /* The old way: bit map of interrupts to choose from */
  57 /* This means pick from 15, 14, 12, 11, 10, 9, 7, 5, 4, and 3 */
  58 static uint irq_mask = 0xdeb8;
  59 /* Newer, simpler way of listing specific interrupts */
  60 static int irq_list[4] = { -1 };
  61
  62 /* Some D-Link cards have buggy CIS. They do work at 5v properly, but
  63  * don't have any CIS entry for it. This workaround it... */
  64 static int ignore_cis_vcc; /* = 0 */
  65
  66 MODULE_PARM(irq_mask, "i");
  67 MODULE_PARM(irq_list, "1-4i");
  68 MODULE_PARM(ignore_cis_vcc, "i");
  69
  70 /********************************************************************/
  71 /* Magic constants                                                  */
  72 /********************************************************************/
  73
  74 /*
  75  * The dev_info variable is the "key" that is used to match up this
  76  * device driver with appropriate cards, through the card
  77  * configuration database.
  78  */
  79 static dev_info_t dev_info = "orinoco_cs";
  80
  81 /********************************************************************/
  82 /* Data structures                                                  */
  83 /********************************************************************/
  84
  85 /* PCMCIA specific device information (goes in the card field of
  86  * struct orinoco_private */
  87 struct orinoco_pccard {
  88         dev_link_t link;
  89         dev_node_t node;
  90
  91         /* Used to handle hard reset */
  92         /* yuck, we need this hack to work around the insanity of the
  93          * PCMCIA layer */
  94         unsigned long hard_reset_in_progress;
  95 };
  96
  97 /*
  98  * A linked list of "instances" of the device.  Each actual PCMCIA
  99  * card corresponds to one device instance, and is described by one
 100  * dev_link_t structure (defined in ds.h).
 101  */
 102 static dev_link_t *dev_list; /* = NULL */
 103
 104 /********************************************************************/
 105 /* Function prototypes                                              */
 106 /********************************************************************/
 107
 108 /* device methods */
 109 static int orinoco_cs_hard_reset(struct orinoco_private *priv);
 110
 111 /* PCMCIA gumpf */
 112 static void orinoco_cs_config(dev_link_t * link);
 113 static void orinoco_cs_release(dev_link_t * link);
 114 static int orinoco_cs_event(event_t event, int priority,
 115                             event_callback_args_t * args);
 116
 117 static dev_link_t *orinoco_cs_attach(void);
 118 static void orinoco_cs_detach(dev_link_t *);
 119
 120 /********************************************************************/
 121 /* Device methods                                                   */
 122 /********************************************************************/
 123
 124 static int
 125 orinoco_cs_hard_reset(struct orinoco_private *priv)
 126 {
 127         struct orinoco_pccard *card = priv->card;
 128         dev_link_t *link = &card->link;
 129         int err;
 130
 131         /* We need atomic ops here, because we're not holding the lock */
 132         set_bit(0, &card->hard_reset_in_progress);
 133
 134         err = pcmcia_reset_card(link->handle, NULL);
 135         if (err)
 136                 return err;
 137
 138         clear_bit(0, &card->hard_reset_in_progress);
 139
 140         return 0;
 141 }
 142
 143 /********************************************************************/
 144 /* PCMCIA stuff                                                     */
 145 /********************************************************************/
 146
 147 /* In 2.5 (as of 2.5.69 at least) there is a cs_error exported which
 148  * does this, but it's not in 2.4 so we do our own for now. */
 149 static void
 150 orinoco_cs_error(client_handle_t handle, int func, int ret)
 151 {
 152         error_info_t err = { func, ret };
 153         pcmcia_report_error(handle, &err);
 154 }
 155
 156 /*
 157  * This creates an "instance" of the driver, allocating local data
 158  * structures for one device.  The device is registered with Card
 159  * Services.
 160  *
 161  * The dev_link structure is initialized, but we don't actually
 162  * configure the card at this point -- we wait until we receive a card
 163  * insertion event.  */
 164 static dev_link_t *
 165 orinoco_cs_attach(void)
 166 {
 167         struct net_device *dev;
 168         struct orinoco_private *priv;
 169         struct orinoco_pccard *card;
 170         dev_link_t *link;
 171         client_reg_t client_reg;
 172         int ret, i;
 173
 174         dev = alloc_orinocodev(sizeof(*card), orinoco_cs_hard_reset);
 175         if (! dev)
 176                 return NULL;
 177         priv = dev->priv;
 178         card = priv->card;
 179
 180         /* Link both structures together */
 181         link = &card->link;
 182         link->priv = dev;
 183
 184         /* Interrupt setup */
 185         link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
 186         link->irq.IRQInfo1 = IRQ_INFO2_VALID | IRQ_LEVEL_ID;
 187         if (irq_list[0] == -1)
 188                 link->irq.IRQInfo2 = irq_mask;
 189         else
 190                 for (i = 0; i < 4; i++)
 191                         link->irq.IRQInfo2 |= 1 << irq_list[i];
 192         link->irq.Handler = NULL;
 193
 194         /* General socket configuration defaults can go here.  In this
 195          * client, we assume very little, and rely on the CIS for
 196          * almost everything.  In most clients, many details (i.e.,
 197          * number, sizes, and attributes of IO windows) are fixed by
 198          * the nature of the device, and can be hard-wired here. */
 199         link->conf.Attributes = 0;
 200         link->conf.IntType = INT_MEMORY_AND_IO;
 201
 202         /* Register with Card Services */
 203         /* FIXME: need a lock? */
 204         link->next = dev_list;
 205         dev_list = link;
 206
 207         client_reg.dev_info = &dev_info;
 208         client_reg.Attributes = INFO_IO_CLIENT | INFO_CARD_SHARE;
 209         client_reg.EventMask =
 210                 CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL |
 211                 CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET |
 212                 CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME;
 213         client_reg.event_handler = &orinoco_cs_event;
 214         client_reg.Version = 0x0210; /* FIXME: what does this mean? */
 215         client_reg.event_callback_args.client_data = link;
 216
 217         ret = pcmcia_register_client(&link->handle, &client_reg);
 218         if (ret != CS_SUCCESS) {
 219                 orinoco_cs_error(link->handle, RegisterClient, ret);
 220                 orinoco_cs_detach(link);
 221                 return NULL;
 222         }
 223
 224         return link;
 225 }                               /* orinoco_cs_attach */
 226
 227 /*
 228  * This deletes a driver "instance".  The device is de-registered with
 229  * Card Services.  If it has been released, all local data structures
 230  * are freed.  Otherwise, the structures will be freed when the device
 231  * is released.
 232  */
 233 static void
 234 orinoco_cs_detach(dev_link_t * link)
 235 {
 236         dev_link_t **linkp;
 237         struct net_device *dev = link->priv;
 238
 239         /* Locate device structure */
 240         for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
 241                 if (*linkp == link)
 242                         break;
 243         if (*linkp == NULL) {
 244                 BUG();
 245                 return;
 246         }
 247
 248         if (link->state & DEV_CONFIG)
 249                 orinoco_cs_release(link);
 250
 251         /* Break the link with Card Services */
 252         if (link->handle)
 253                 pcmcia_deregister_client(link->handle);
 254
 255         /* Unlink device structure, and free it */
 256         *linkp = link->next;
 257         DEBUG(0, "orinoco_cs: detach: link=%p link->dev=%p\n", link, link->dev);
 258         if (link->dev) {
 259                 DEBUG(0, "orinoco_cs: About to unregister net device %p\n",
 260                       dev);
 261                 unregister_netdev(dev);
 262         }
 263         free_netdev(dev);
 264 }                               /* orinoco_cs_detach */
 265
 266 /*
 267  * orinoco_cs_config() is scheduled to run after a CARD_INSERTION
 268  * event is received, to configure the PCMCIA socket, and to make the
 269  * device available to the system.
 270  */
 271
 272 #define CS_CHECK(fn, ret) \
 273 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
 274
 275 static void
 276 orinoco_cs_config(dev_link_t *link)
 277 {
 278         struct net_device *dev = link->priv;
 279         client_handle_t handle = link->handle;
 280         struct orinoco_private *priv = dev->priv;
 281         struct orinoco_pccard *card = priv->card;
 282         hermes_t *hw = &priv->hw;
 283         int last_fn, last_ret;
 284         u_char buf[64];
 285         config_info_t conf;
 286         cisinfo_t info;
 287         tuple_t tuple;
 288         cisparse_t parse;
 289
 290         CS_CHECK(ValidateCIS, pcmcia_validate_cis(handle, &info));
 291
 292         /*
 293          * This reads the card's CONFIG tuple to find its
 294          * configuration registers.
 295          */
 296         tuple.DesiredTuple = CISTPL_CONFIG;
 297         tuple.Attributes = 0;
 298         tuple.TupleData = buf;
 299         tuple.TupleDataMax = sizeof(buf);
 300         tuple.TupleOffset = 0;
 301         CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
 302         CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
 303         CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
 304         link->conf.ConfigBase = parse.config.base;
 305         link->conf.Present = parse.config.rmask[0];
 306
 307         /* Configure card */
 308         link->state |= DEV_CONFIG;
 309
 310         /* Look up the current Vcc */
 311         CS_CHECK(GetConfigurationInfo, pcmcia_get_configuration_info(handle, &conf));
 312         link->conf.Vcc = conf.Vcc;
 313
 314         /*
 315          * In this loop, we scan the CIS for configuration table
 316          * entries, each of which describes a valid card
 317          * configuration, including voltage, IO window, memory window,
 318          * and interrupt settings.
 319          *
 320          * We make no assumptions about the card to be configured: we
 321          * use just the information available in the CIS.  In an ideal
 322          * world, this would work for any PCMCIA card, but it requires
 323          * a complete and accurate CIS.  In practice, a driver usually
 324          * "knows" most of these things without consulting the CIS,
 325          * and most client drivers will only use the CIS to fill in
 326          * implementation-defined details.
 327          */
 328         tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
 329         CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
 330         while (1) {
 331                 cistpl_cftable_entry_t *cfg = &(parse.cftable_entry);
 332                 cistpl_cftable_entry_t dflt = { .index = 0 };
 333
 334                 if (pcmcia_get_tuple_data(handle, &tuple) != 0 ||
 335                                 pcmcia_parse_tuple(handle, &tuple, &parse) != 0)
 336                         goto next_entry;
 337
 338                 if (cfg->flags & CISTPL_CFTABLE_DEFAULT)
 339                         dflt = *cfg;
 340                 if (cfg->index == 0)
 341                         goto next_entry;
 342                 link->conf.ConfigIndex = cfg->index;
 343
 344                 /* Does this card need audio output? */
 345                 if (cfg->flags & CISTPL_CFTABLE_AUDIO) {
 346                         link->conf.Attributes |= CONF_ENABLE_SPKR;
 347                         link->conf.Status = CCSR_AUDIO_ENA;
 348                 }
 349
 350                 /* Use power settings for Vcc and Vpp if present */
 351                 /* Note that the CIS values need to be rescaled */
 352                 if (cfg->vcc.present & (1 << CISTPL_POWER_VNOM)) {
 353                         if (conf.Vcc != cfg->vcc.param[CISTPL_POWER_VNOM] / 10000) {
 354                                 DEBUG(2, "orinoco_cs_config: Vcc mismatch (conf.Vcc = %d, CIS = %d)\n",  conf.Vcc, cfg->vcc.param[CISTPL_POWER_VNOM] / 10000);
 355                                 if (!ignore_cis_vcc)
 356                                         goto next_entry;
 357                         }
 358                 } else if (dflt.vcc.present & (1 << CISTPL_POWER_VNOM)) {
 359                         if (conf.Vcc != dflt.vcc.param[CISTPL_POWER_VNOM] / 10000) {
 360                                 DEBUG(2, "orinoco_cs_config: Vcc mismatch (conf.Vcc = %d, CIS = %d)\n",  conf.Vcc, dflt.vcc.param[CISTPL_POWER_VNOM] / 10000);
 361                                 if(!ignore_cis_vcc)
 362                                         goto next_entry;
 363                         }
 364                 }
 365
 366                 if (cfg->vpp1.present & (1 << CISTPL_POWER_VNOM))
 367                         link->conf.Vpp1 = link->conf.Vpp2 =
 368                             cfg->vpp1.param[CISTPL_POWER_VNOM] / 10000;
 369                 else if (dflt.vpp1.present & (1 << CISTPL_POWER_VNOM))
 370                         link->conf.Vpp1 = link->conf.Vpp2 =
 371                             dflt.vpp1.param[CISTPL_POWER_VNOM] / 10000;
 372
 373                 /* Do we need to allocate an interrupt? */
 374                 if (cfg->irq.IRQInfo1 || dflt.irq.IRQInfo1)
 375                         link->conf.Attributes |= CONF_ENABLE_IRQ;
 376
 377                 /* IO window settings */
 378                 link->io.NumPorts1 = link->io.NumPorts2 = 0;
 379                 if ((cfg->io.nwin > 0) || (dflt.io.nwin > 0)) {
 380                         cistpl_io_t *io =
 381                             (cfg->io.nwin) ? &cfg->io : &dflt.io;
 382                         link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
 383                         if (!(io->flags & CISTPL_IO_8BIT))
 384                                 link->io.Attributes1 =
 385                                     IO_DATA_PATH_WIDTH_16;
 386                         if (!(io->flags & CISTPL_IO_16BIT))
 387                                 link->io.Attributes1 =
 388                                     IO_DATA_PATH_WIDTH_8;
 389                         link->io.IOAddrLines =
 390                             io->flags & CISTPL_IO_LINES_MASK;
 391                         link->io.BasePort1 = io->win[0].base;
 392                         link->io.NumPorts1 = io->win[0].len;
 393                         if (io->nwin > 1) {
 394                                 link->io.Attributes2 =
 395                                     link->io.Attributes1;
 396                                 link->io.BasePort2 = io->win[1].base;
 397                                 link->io.NumPorts2 = io->win[1].len;
 398                         }
 399
 400                         /* This reserves IO space but doesn't actually enable it */
 401                         if (pcmcia_request_io(link->handle, &link->io) != 0)
 402                                 goto next_entry;
 403                 }
 404
 405
 406                 /* If we got this far, we're cool! */
 407
 408                 break;
 409
 410         next_entry:
 411                 if (link->io.NumPorts1)
 412                         pcmcia_release_io(link->handle, &link->io);
 413                 last_ret = pcmcia_get_next_tuple(handle, &tuple);
 414                 if (last_ret  == CS_NO_MORE_ITEMS) {
 415                         printk(KERN_ERR "GetNextTuple().  No matching CIS configuration, "
 416                                "maybe you need the ignore_cis_vcc=1 parameter.\n");
 417                         goto cs_failed;
 418                 }
 419         }
 420
 421         /*
 422          * Allocate an interrupt line.  Note that this does not assign
 423          * a handler to the interrupt, unless the 'Handler' member of
 424          * the irq structure is initialized.
 425          */
 426         if (link->conf.Attributes & CONF_ENABLE_IRQ) {
 427                 int i;
 428
 429                 link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT;
 430                 link->irq.IRQInfo1 = IRQ_INFO2_VALID | IRQ_LEVEL_ID;
 431                 if (irq_list[0] == -1)
 432                         link->irq.IRQInfo2 = irq_mask;
 433                 else
 434                         for (i=0; i<4; i++)
 435                                 link->irq.IRQInfo2 |= 1 << irq_list[i];
 436
 437                 link->irq.Handler = orinoco_interrupt;
 438                 link->irq.Instance = dev;
 439
 440                 CS_CHECK(RequestIRQ, pcmcia_request_irq(link->handle, &link->irq));
 441         }
 442
 443         /* We initialize the hermes structure before completing PCMCIA
 444          * configuration just in case the interrupt handler gets
 445          * called. */
 446         hermes_struct_init(hw, link->io.BasePort1,
 447                                 HERMES_IO, HERMES_16BIT_REGSPACING);
 448
 449         /*
 450          * This actually configures the PCMCIA socket -- setting up
 451          * the I/O windows and the interrupt mapping, and putting the
 452          * card and host interface into "Memory and IO" mode.
 453          */
 454         CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link->handle, &link->conf));
 455
 456         /* Ok, we have the configuration, prepare to register the netdev */
 457         dev->base_addr = link->io.BasePort1;
 458         dev->irq = link->irq.AssignedIRQ;
 459         SET_MODULE_OWNER(dev);
 460         card->node.major = card->node.minor = 0;
 461
 462         /* register_netdev will give us an ethX name */
 463         dev->name[0] = '\0';
 464         /* Tell the stack we exist */
 465         if (register_netdev(dev) != 0) {
 466                 printk(KERN_ERR "orinoco_cs: register_netdev() failed\n");
 467                 goto failed;
 468         }
 469
 470         /* At this point, the dev_node_t structure(s) needs to be
 471          * initialized and arranged in a linked list at link->dev. */
 472         strcpy(card->node.dev_name, dev->name);
 473         link->dev = &card->node; /* link->dev being non-NULL is also
 474                                     used to indicate that the
 475                                     net_device has been registered */
 476         link->state &= ~DEV_CONFIG_PENDING;
 477
 478         /* Finally, report what we've done */
 479         printk(KERN_DEBUG "%s: index 0x%02x: Vcc %d.%d",
 480                dev->name, link->conf.ConfigIndex,
 481                link->conf.Vcc / 10, link->conf.Vcc % 10);
 482         if (link->conf.Vpp1)
 483                 printk(", Vpp %d.%d", link->conf.Vpp1 / 10,
 484                        link->conf.Vpp1 % 10);
 485         if (link->conf.Attributes & CONF_ENABLE_IRQ)
 486                 printk(", irq %d", link->irq.AssignedIRQ);
 487         if (link->io.NumPorts1)
 488                 printk(", io 0x%04x-0x%04x", link->io.BasePort1,
 489                        link->io.BasePort1 + link->io.NumPorts1 - 1);
 490         if (link->io.NumPorts2)
 491                 printk(" & 0x%04x-0x%04x", link->io.BasePort2,
 492                        link->io.BasePort2 + link->io.NumPorts2 - 1);
 493         printk("\n");
 494
 495         return;
 496
 497  cs_failed:
 498         orinoco_cs_error(link->handle, last_fn, last_ret);
 499
 500  failed:
 501         orinoco_cs_release(link);
 502 }                               /* orinoco_cs_config */
 503
 504 /*
 505  * After a card is removed, orinoco_cs_release() will unregister the
 506  * device, and release the PCMCIA configuration.  If the device is
 507  * still open, this will be postponed until it is closed.
 508  */
 509 static void
 510 orinoco_cs_release(dev_link_t *link)
 511 {
 512         struct net_device *dev = link->priv;
 513         struct orinoco_private *priv = dev->priv;
 514         unsigned long flags;
 515
 516         /* We're committed to taking the device away now, so mark the
 517          * hardware as unavailable */
 518         spin_lock_irqsave(&priv->lock, flags);
 519         priv->hw_unavailable++;
 520         spin_unlock_irqrestore(&priv->lock, flags);
 521
 522         /* Don't bother checking to see if these succeed or not */
 523         pcmcia_release_configuration(link->handle);
 524         if (link->io.NumPorts1)
 525                 pcmcia_release_io(link->handle, &link->io);
 526         if (link->irq.AssignedIRQ)
 527                 pcmcia_release_irq(link->handle, &link->irq);
 528         link->state &= ~DEV_CONFIG;
 529 }                               /* orinoco_cs_release */
 530
 531 /*
 532  * The card status event handler.  Mostly, this schedules other stuff
 533  * to run after an event is received.
 534  */
 535 static int
 536 orinoco_cs_event(event_t event, int priority,
 537                        event_callback_args_t * args)
 538 {
 539         dev_link_t *link = args->client_data;
 540         struct net_device *dev = link->priv;
 541         struct orinoco_private *priv = dev->priv;
 542         struct orinoco_pccard *card = priv->card;
 543         int err = 0;
 544         unsigned long flags;
 545
 546         switch (event) {
 547         case CS_EVENT_CARD_REMOVAL:
 548                 link->state &= ~DEV_PRESENT;
 549                 if (link->state & DEV_CONFIG) {
 550                         orinoco_lock(priv, &flags);
 551
 552                         netif_device_detach(dev);
 553                         priv->hw_unavailable++;
 554
 555                         orinoco_unlock(priv, &flags);
 556                 }
 557                 break;
 558
 559         case CS_EVENT_CARD_INSERTION:
 560                 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
 561                 orinoco_cs_config(link);
 562                 break;
 563
 564         case CS_EVENT_PM_SUSPEND:
 565                 link->state |= DEV_SUSPEND;
 566                 /* Fall through... */
 567         case CS_EVENT_RESET_PHYSICAL:
 568                 /* Mark the device as stopped, to block IO until later */
 569                 if (link->state & DEV_CONFIG) {
 570                         /* This is probably racy, but I can't think of
 571                            a better way, short of rewriting the PCMCIA
 572                            layer to not suck :-( */
 573                         if (! test_bit(0, &card->hard_reset_in_progress)) {
 574                                 spin_lock_irqsave(&priv->lock, flags);
 575
 576                                 err = __orinoco_down(dev);
 577                                 if (err)
 578                                         printk(KERN_WARNING "%s: %s: Error %d downing interface\n",
 579                                                dev->name,
 580                                                event == CS_EVENT_PM_SUSPEND ? "SUSPEND" : "RESET_PHYSICAL",
 581                                                err);
 582
 583                                 netif_device_detach(dev);
 584                                 priv->hw_unavailable++;
 585
 586                                 spin_unlock_irqrestore(&priv->lock, flags);
 587                         }
 588
 589                         pcmcia_release_configuration(link->handle);
 590                 }
 591                 break;
 592
 593         case CS_EVENT_PM_RESUME:
 594                 link->state &= ~DEV_SUSPEND;
 595                 /* Fall through... */
 596         case CS_EVENT_CARD_RESET:
 597                 if (link->state & DEV_CONFIG) {
 598                         /* FIXME: should we double check that this is
 599                          * the same card as we had before */
 600                         pcmcia_request_configuration(link->handle, &link->conf);
 601
 602                         if (! test_bit(0, &card->hard_reset_in_progress)) {
 603                                 err = orinoco_reinit_firmware(dev);
 604                                 if (err) {
 605                                         printk(KERN_ERR "%s: Error %d re-initializing firmware\n",
 606                                                dev->name, err);
 607                                         break;
 608                                 }
 609
 610                                 spin_lock_irqsave(&priv->lock, flags);
 611
 612                                 netif_device_attach(dev);
 613                                 priv->hw_unavailable--;
 614
 615                                 if (priv->open && ! priv->hw_unavailable) {
 616                                         err = __orinoco_up(dev);
 617                                         if (err)
 618                                                 printk(KERN_ERR "%s: Error %d restarting card\n",
 619                                                        dev->name, err);
 620
 621                                 }
 622
 623                                 spin_unlock_irqrestore(&priv->lock, flags);
 624                         }
 625                 }
 626                 break;
 627         }
 628
 629         return err;
 630 }                               /* orinoco_cs_event */
 631
 632 /********************************************************************/
 633 /* Module initialization                                            */
 634 /********************************************************************/
 635
 636 /* Can't be declared "const" or the whole __initdata section will
 637  * become const */
 638 static char version[] __initdata = "orinoco_cs.c 0.13e (David Gibson <hermes@gibson.dropbear.id.au> and others)";
 639
 640 static struct pcmcia_driver orinoco_driver = {
 641         .owner          = THIS_MODULE,
 642         .drv            = {
 643                 .name   = "orinoco_cs",
 644         },
 645         .attach         = orinoco_cs_attach,
 646         .detach         = orinoco_cs_detach,
 647 };
 648
 649 static int __init
 650 init_orinoco_cs(void)
 651 {
 652         printk(KERN_DEBUG "%s\n", version);
 653
 654         return pcmcia_register_driver(&orinoco_driver);
 655 }
 656
 657 static void __exit
 658 exit_orinoco_cs(void)
 659 {
 660         pcmcia_unregister_driver(&orinoco_driver);
 661
 662         if (dev_list)
 663                 DEBUG(0, "orinoco_cs: Removing leftover devices.\n");
 664         while (dev_list != NULL) {
 665                 if (dev_list->state & DEV_CONFIG)
 666                         orinoco_cs_release(dev_list);
 667                 orinoco_cs_detach(dev_list);
 668         }
 669 }
 670
 671 module_init(init_orinoco_cs);
 672 module_exit(exit_orinoco_cs);
 673