drivers/net/wireless/orinoco_cs.c

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