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(u_long arg);
 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 = CardServices(ResetCard, 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         CardServices(ReportError, handle, &err);
 154 }
 155
 156
 157 /* Remove zombie instances (card removed, detach pending) */
 158 static void
 159 flush_stale_links(void)
 160 {
 161         dev_link_t *link, *next;
 162
 163         TRACE_ENTER("");
 164
 165         for (link = dev_list; link; link = next) {
 166                 next = link->next;
 167                 if (link->state & DEV_STALE_LINK) {
 168                         orinoco_cs_detach(link);
 169                 }
 170         }
 171         TRACE_EXIT("");
 172 }
 173
 174 /*
 175  * This creates an "instance" of the driver, allocating local data
 176  * structures for one device.  The device is registered with Card
 177  * Services.
 178  *
 179  * The dev_link structure is initialized, but we don't actually
 180  * configure the card at this point -- we wait until we receive a card
 181  * insertion event.  */
 182 static dev_link_t *
 183 orinoco_cs_attach(void)
 184 {
 185         struct net_device *dev;
 186         struct orinoco_private *priv;
 187         struct orinoco_pccard *card;
 188         dev_link_t *link;
 189         client_reg_t client_reg;
 190         int ret, i;
 191
 192         /* A bit of cleanup */
 193         flush_stale_links();
 194
 195         dev = alloc_orinocodev(sizeof(*card), orinoco_cs_hard_reset);
 196         if (! dev)
 197                 return NULL;
 198         priv = dev->priv;
 199         card = priv->card;
 200
 201         /* Link both structures together */
 202         link = &card->link;
 203         link->priv = dev;
 204
 205         /* Initialize the dev_link_t structure */
 206         init_timer(&link->release);
 207         link->release.function = &orinoco_cs_release;
 208         link->release.data = (u_long) link;
 209
 210         /* Interrupt setup */
 211         link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
 212         link->irq.IRQInfo1 = IRQ_INFO2_VALID | IRQ_LEVEL_ID;
 213         if (irq_list[0] == -1)
 214                 link->irq.IRQInfo2 = irq_mask;
 215         else
 216                 for (i = 0; i < 4; i++)
 217                         link->irq.IRQInfo2 |= 1 << irq_list[i];
 218         link->irq.Handler = NULL;
 219
 220         /* General socket configuration defaults can go here.  In this
 221          * client, we assume very little, and rely on the CIS for
 222          * almost everything.  In most clients, many details (i.e.,
 223          * number, sizes, and attributes of IO windows) are fixed by
 224          * the nature of the device, and can be hard-wired here. */
 225         link->conf.Attributes = 0;
 226         link->conf.IntType = INT_MEMORY_AND_IO;
 227
 228         /* Register with Card Services */
 229         /* FIXME: need a lock? */
 230         link->next = dev_list;
 231         dev_list = link;
 232
 233         client_reg.dev_info = &dev_info;
 234         client_reg.Attributes = INFO_IO_CLIENT | INFO_CARD_SHARE;
 235         client_reg.EventMask =
 236                 CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL |
 237                 CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET |
 238                 CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME;
 239         client_reg.event_handler = &orinoco_cs_event;
 240         client_reg.Version = 0x0210; /* FIXME: what does this mean? */
 241         client_reg.event_callback_args.client_data = link;
 242
 243         ret = CardServices(RegisterClient, &link->handle, &client_reg);
 244         if (ret != CS_SUCCESS) {
 245                 orinoco_cs_error(link->handle, RegisterClient, ret);
 246                 orinoco_cs_detach(link);
 247                 return NULL;
 248         }
 249
 250         return link;
 251 }                               /* orinoco_cs_attach */
 252
 253 /*
 254  * This deletes a driver "instance".  The device is de-registered with
 255  * Card Services.  If it has been released, all local data structures
 256  * are freed.  Otherwise, the structures will be freed when the device
 257  * is released.
 258  */
 259 static void
 260 orinoco_cs_detach(dev_link_t * link)
 261 {
 262         dev_link_t **linkp;
 263         struct net_device *dev = link->priv;
 264
 265         /* Locate device structure */
 266         for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
 267                 if (*linkp == link)
 268                         break;
 269         if (*linkp == NULL) {
 270                 BUG();
 271                 return;
 272         }
 273
 274         if (link->state & DEV_CONFIG) {
 275                 orinoco_cs_release((u_long)link);
 276                 if (link->state & DEV_CONFIG) {
 277                         link->state |= DEV_STALE_LINK;
 278                         return;
 279                 }
 280         }
 281
 282         /* Break the link with Card Services */
 283         if (link->handle)
 284                 CardServices(DeregisterClient, link->handle);
 285
 286         /* Unlink device structure, and free it */
 287         *linkp = link->next;
 288         DEBUG(0, "orinoco_cs: detach: link=%p link->dev=%p\n", link, link->dev);
 289         if (link->dev) {
 290                 DEBUG(0, "orinoco_cs: About to unregister net device %p\n",
 291                       dev);
 292                 unregister_netdev(dev);
 293         }
 294         kfree(dev);
 295 }                               /* orinoco_cs_detach */
 296
 297 /*
 298  * orinoco_cs_config() is scheduled to run after a CARD_INSERTION
 299  * event is received, to configure the PCMCIA socket, and to make the
 300  * device available to the system.
 301  */
 302
 303 #define CS_CHECK(fn, args...) \
 304         while ((last_ret=CardServices(last_fn=(fn),args))!=0) goto cs_failed
 305
 306 #define CFG_CHECK(fn, args...) \
 307         if (CardServices(fn, args) != 0) goto next_entry
 308
 309 static void
 310 orinoco_cs_config(dev_link_t *link)
 311 {
 312         struct net_device *dev = link->priv;
 313         client_handle_t handle = link->handle;
 314         struct orinoco_private *priv = dev->priv;
 315         struct orinoco_pccard *card = priv->card;
 316         hermes_t *hw = &priv->hw;
 317         int last_fn, last_ret;
 318         u_char buf[64];
 319         config_info_t conf;
 320         cisinfo_t info;
 321         tuple_t tuple;
 322         cisparse_t parse;
 323
 324         CS_CHECK(ValidateCIS, handle, &info);
 325
 326         /*
 327          * This reads the card's CONFIG tuple to find its
 328          * configuration registers.
 329          */
 330         tuple.DesiredTuple = CISTPL_CONFIG;
 331         tuple.Attributes = 0;
 332         tuple.TupleData = buf;
 333         tuple.TupleDataMax = sizeof(buf);
 334         tuple.TupleOffset = 0;
 335         CS_CHECK(GetFirstTuple, handle, &tuple);
 336         CS_CHECK(GetTupleData, handle, &tuple);
 337         CS_CHECK(ParseTuple, handle, &tuple, &parse);
 338         link->conf.ConfigBase = parse.config.base;
 339         link->conf.Present = parse.config.rmask[0];
 340
 341         /* Configure card */
 342         link->state |= DEV_CONFIG;
 343
 344         /* Look up the current Vcc */
 345         CS_CHECK(GetConfigurationInfo, handle, &conf);
 346         link->conf.Vcc = conf.Vcc;
 347
 348         /*
 349          * In this loop, we scan the CIS for configuration table
 350          * entries, each of which describes a valid card
 351          * configuration, including voltage, IO window, memory window,
 352          * and interrupt settings.
 353          *
 354          * We make no assumptions about the card to be configured: we
 355          * use just the information available in the CIS.  In an ideal
 356          * world, this would work for any PCMCIA card, but it requires
 357          * a complete and accurate CIS.  In practice, a driver usually
 358          * "knows" most of these things without consulting the CIS,
 359          * and most client drivers will only use the CIS to fill in
 360          * implementation-defined details.
 361          */
 362         tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
 363         CS_CHECK(GetFirstTuple, handle, &tuple);
 364         while (1) {
 365                 cistpl_cftable_entry_t *cfg = &(parse.cftable_entry);
 366                 cistpl_cftable_entry_t dflt = { .index = 0 };
 367
 368                 CFG_CHECK(GetTupleData, handle, &tuple);
 369                 CFG_CHECK(ParseTuple, handle, &tuple, &parse);
 370
 371                 if (cfg->flags & CISTPL_CFTABLE_DEFAULT)
 372                         dflt = *cfg;
 373                 if (cfg->index == 0)
 374                         goto next_entry;
 375                 link->conf.ConfigIndex = cfg->index;
 376
 377                 /* Does this card need audio output? */
 378                 if (cfg->flags & CISTPL_CFTABLE_AUDIO) {
 379                         link->conf.Attributes |= CONF_ENABLE_SPKR;
 380                         link->conf.Status = CCSR_AUDIO_ENA;
 381                 }
 382
 383                 /* Use power settings for Vcc and Vpp if present */
 384                 /* Note that the CIS values need to be rescaled */
 385                 if (cfg->vcc.present & (1 << CISTPL_POWER_VNOM)) {
 386                         if (conf.Vcc != cfg->vcc.param[CISTPL_POWER_VNOM] / 10000) {
 387                                 DEBUG(2, "orinoco_cs_config: Vcc mismatch (conf.Vcc = %d, CIS = %d)\n",  conf.Vcc, cfg->vcc.param[CISTPL_POWER_VNOM] / 10000);
 388                                 if (!ignore_cis_vcc)
 389                                         goto next_entry;
 390                         }
 391                 } else if (dflt.vcc.present & (1 << CISTPL_POWER_VNOM)) {
 392                         if (conf.Vcc != dflt.vcc.param[CISTPL_POWER_VNOM] / 10000) {
 393                                 DEBUG(2, "orinoco_cs_config: Vcc mismatch (conf.Vcc = %d, CIS = %d)\n",  conf.Vcc, dflt.vcc.param[CISTPL_POWER_VNOM] / 10000);
 394                                 if(!ignore_cis_vcc)
 395                                         goto next_entry;
 396                         }
 397                 }
 398
 399                 if (cfg->vpp1.present & (1 << CISTPL_POWER_VNOM))
 400                         link->conf.Vpp1 = link->conf.Vpp2 =
 401                             cfg->vpp1.param[CISTPL_POWER_VNOM] / 10000;
 402                 else if (dflt.vpp1.present & (1 << CISTPL_POWER_VNOM))
 403                         link->conf.Vpp1 = link->conf.Vpp2 =
 404                             dflt.vpp1.param[CISTPL_POWER_VNOM] / 10000;
 405
 406                 /* Do we need to allocate an interrupt? */
 407                 if (cfg->irq.IRQInfo1 || dflt.irq.IRQInfo1)
 408                         link->conf.Attributes |= CONF_ENABLE_IRQ;
 409
 410                 /* IO window settings */
 411                 link->io.NumPorts1 = link->io.NumPorts2 = 0;
 412                 if ((cfg->io.nwin > 0) || (dflt.io.nwin > 0)) {
 413                         cistpl_io_t *io =
 414                             (cfg->io.nwin) ? &cfg->io : &dflt.io;
 415                         link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
 416                         if (!(io->flags & CISTPL_IO_8BIT))
 417                                 link->io.Attributes1 =
 418                                     IO_DATA_PATH_WIDTH_16;
 419                         if (!(io->flags & CISTPL_IO_16BIT))
 420                                 link->io.Attributes1 =
 421                                     IO_DATA_PATH_WIDTH_8;
 422                         link->io.IOAddrLines =
 423                             io->flags & CISTPL_IO_LINES_MASK;
 424                         link->io.BasePort1 = io->win[0].base;
 425                         link->io.NumPorts1 = io->win[0].len;
 426                         if (io->nwin > 1) {
 427                                 link->io.Attributes2 =
 428                                     link->io.Attributes1;
 429                                 link->io.BasePort2 = io->win[1].base;
 430                                 link->io.NumPorts2 = io->win[1].len;
 431                         }
 432
 433                         /* This reserves IO space but doesn't actually enable it */
 434                         CFG_CHECK(RequestIO, link->handle, &link->io);
 435                 }
 436
 437
 438                 /* If we got this far, we're cool! */
 439
 440                 break;
 441
 442         next_entry:
 443                 if (link->io.NumPorts1)
 444                         CardServices(ReleaseIO, link->handle, &link->io);
 445                 last_ret = CardServices(GetNextTuple, handle, &tuple);
 446                 if (last_ret  == CS_NO_MORE_ITEMS) {
 447                         printk(KERN_ERR "GetNextTuple().  No matching CIS configuration, "
 448                                "maybe you need the ignore_cis_vcc=1 parameter.\n");
 449                         goto cs_failed;
 450                 }
 451         }
 452
 453         /*
 454          * Allocate an interrupt line.  Note that this does not assign
 455          * a handler to the interrupt, unless the 'Handler' member of
 456          * the irq structure is initialized.
 457          */
 458         if (link->conf.Attributes & CONF_ENABLE_IRQ) {
 459                 int i;
 460
 461                 link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT;
 462                 link->irq.IRQInfo1 = IRQ_INFO2_VALID | IRQ_LEVEL_ID;
 463                 if (irq_list[0] == -1)
 464                         link->irq.IRQInfo2 = irq_mask;
 465                 else
 466                         for (i=0; i<4; i++)
 467                                 link->irq.IRQInfo2 |= 1 << irq_list[i];
 468
 469                 link->irq.Handler = orinoco_interrupt;
 470                 link->irq.Instance = dev;
 471
 472                 CS_CHECK(RequestIRQ, link->handle, &link->irq);
 473         }
 474
 475         /* We initialize the hermes structure before completing PCMCIA
 476          * configuration just in case the interrupt handler gets
 477          * called. */
 478         hermes_struct_init(hw, link->io.BasePort1,
 479                                 HERMES_IO, HERMES_16BIT_REGSPACING);
 480
 481         /*
 482          * This actually configures the PCMCIA socket -- setting up
 483          * the I/O windows and the interrupt mapping, and putting the
 484          * card and host interface into "Memory and IO" mode.
 485          */
 486         CS_CHECK(RequestConfiguration, link->handle, &link->conf);
 487
 488         /* Ok, we have the configuration, prepare to register the netdev */
 489         dev->base_addr = link->io.BasePort1;
 490         dev->irq = link->irq.AssignedIRQ;
 491         SET_MODULE_OWNER(dev);
 492         card->node.major = card->node.minor = 0;
 493
 494         /* register_netdev will give us an ethX name */
 495         dev->name[0] = '\0';
 496         /* Tell the stack we exist */
 497         if (register_netdev(dev) != 0) {
 498                 printk(KERN_ERR "orinoco_cs: register_netdev() failed\n");
 499                 goto failed;
 500         }
 501
 502         /* At this point, the dev_node_t structure(s) needs to be
 503          * initialized and arranged in a linked list at link->dev. */
 504         strcpy(card->node.dev_name, dev->name);
 505         link->dev = &card->node; /* link->dev being non-NULL is also
 506                                     used to indicate that the
 507                                     net_device has been registered */
 508         link->state &= ~DEV_CONFIG_PENDING;
 509
 510         /* Finally, report what we've done */
 511         printk(KERN_DEBUG "%s: index 0x%02x: Vcc %d.%d",
 512                dev->name, link->conf.ConfigIndex,
 513                link->conf.Vcc / 10, link->conf.Vcc % 10);
 514         if (link->conf.Vpp1)
 515                 printk(", Vpp %d.%d", link->conf.Vpp1 / 10,
 516                        link->conf.Vpp1 % 10);
 517         if (link->conf.Attributes & CONF_ENABLE_IRQ)
 518                 printk(", irq %d", link->irq.AssignedIRQ);
 519         if (link->io.NumPorts1)
 520                 printk(", io 0x%04x-0x%04x", link->io.BasePort1,
 521                        link->io.BasePort1 + link->io.NumPorts1 - 1);
 522         if (link->io.NumPorts2)
 523                 printk(" & 0x%04x-0x%04x", link->io.BasePort2,
 524                        link->io.BasePort2 + link->io.NumPorts2 - 1);
 525         printk("\n");
 526
 527         return;
 528
 529  cs_failed:
 530         orinoco_cs_error(link->handle, last_fn, last_ret);
 531
 532  failed:
 533         orinoco_cs_release((u_long) link);
 534 }                               /* orinoco_cs_config */
 535
 536 /*
 537  * After a card is removed, orinoco_cs_release() will unregister the
 538  * device, and release the PCMCIA configuration.  If the device is
 539  * still open, this will be postponed until it is closed.
 540  */
 541 static void
 542 orinoco_cs_release(u_long arg)
 543 {
 544         dev_link_t *link = (dev_link_t *) arg;
 545         struct net_device *dev = link->priv;
 546         struct orinoco_private *priv = dev->priv;
 547         unsigned long flags;
 548
 549         /* We're committed to taking the device away now, so mark the
 550          * hardware as unavailable */
 551         spin_lock_irqsave(&priv->lock, flags);
 552         priv->hw_unavailable++;
 553         spin_unlock_irqrestore(&priv->lock, flags);
 554
 555         /* Don't bother checking to see if these succeed or not */
 556         CardServices(ReleaseConfiguration, link->handle);
 557         if (link->io.NumPorts1)
 558                 CardServices(ReleaseIO, link->handle, &link->io);
 559         if (link->irq.AssignedIRQ)
 560                 CardServices(ReleaseIRQ, link->handle, &link->irq);
 561         link->state &= ~DEV_CONFIG;
 562 }                               /* orinoco_cs_release */
 563
 564 /*
 565  * The card status event handler.  Mostly, this schedules other stuff
 566  * to run after an event is received.
 567  */
 568 static int
 569 orinoco_cs_event(event_t event, int priority,
 570                        event_callback_args_t * args)
 571 {
 572         dev_link_t *link = args->client_data;
 573         struct net_device *dev = link->priv;
 574         struct orinoco_private *priv = dev->priv;
 575         struct orinoco_pccard *card = priv->card;
 576         int err = 0;
 577         unsigned long flags;
 578
 579         switch (event) {
 580         case CS_EVENT_CARD_REMOVAL:
 581                 link->state &= ~DEV_PRESENT;
 582                 if (link->state & DEV_CONFIG) {
 583                         orinoco_lock(priv, &flags);
 584
 585                         netif_device_detach(dev);
 586                         priv->hw_unavailable++;
 587
 588                         orinoco_unlock(priv, &flags);
 589                 }
 590                 break;
 591
 592         case CS_EVENT_CARD_INSERTION:
 593                 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
 594                 orinoco_cs_config(link);
 595                 break;
 596
 597         case CS_EVENT_PM_SUSPEND:
 598                 link->state |= DEV_SUSPEND;
 599                 /* Fall through... */
 600         case CS_EVENT_RESET_PHYSICAL:
 601                 /* Mark the device as stopped, to block IO until later */
 602                 if (link->state & DEV_CONFIG) {
 603                         /* This is probably racy, but I can't think of
 604                            a better way, short of rewriting the PCMCIA
 605                            layer to not suck :-( */
 606                         if (! test_bit(0, &card->hard_reset_in_progress)) {
 607                                 spin_lock_irqsave(&priv->lock, flags);
 608
 609                                 err = __orinoco_down(dev);
 610                                 if (err)
 611                                         printk(KERN_WARNING "%s: %s: Error %d downing interface\n",
 612                                                dev->name,
 613                                                event == CS_EVENT_PM_SUSPEND ? "SUSPEND" : "RESET_PHYSICAL",
 614                                                err);
 615
 616                                 netif_device_detach(dev);
 617                                 priv->hw_unavailable++;
 618
 619                                 spin_unlock_irqrestore(&priv->lock, flags);
 620                         }
 621
 622                         CardServices(ReleaseConfiguration, link->handle);
 623                 }
 624                 break;
 625
 626         case CS_EVENT_PM_RESUME:
 627                 link->state &= ~DEV_SUSPEND;
 628                 /* Fall through... */
 629         case CS_EVENT_CARD_RESET:
 630                 if (link->state & DEV_CONFIG) {
 631                         /* FIXME: should we double check that this is
 632                          * the same card as we had before */
 633                         CardServices(RequestConfiguration, link->handle,
 634                                      &link->conf);
 635
 636                         if (! test_bit(0, &card->hard_reset_in_progress)) {
 637                                 err = orinoco_reinit_firmware(dev);
 638                                 if (err) {
 639                                         printk(KERN_ERR "%s: Error %d re-initializing firmware\n",
 640                                                dev->name, err);
 641                                         break;
 642                                 }
 643
 644                                 spin_lock_irqsave(&priv->lock, flags);
 645
 646                                 netif_device_attach(dev);
 647                                 priv->hw_unavailable--;
 648
 649                                 if (priv->open && ! priv->hw_unavailable) {
 650                                         err = __orinoco_up(dev);
 651                                         if (err)
 652                                                 printk(KERN_ERR "%s: Error %d restarting card\n",
 653                                                        dev->name, err);
 654
 655                                 }
 656
 657                                 spin_unlock_irqrestore(&priv->lock, flags);
 658                         }
 659                 }
 660                 break;
 661         }
 662
 663         return err;
 664 }                               /* orinoco_cs_event */
 665
 666 /********************************************************************/
 667 /* Module initialization                                            */
 668 /********************************************************************/
 669
 670 /* Can't be declared "const" or the whole __initdata section will
 671  * become const */
 672 static char version[] __initdata = "orinoco_cs.c 0.13e (David Gibson <hermes@gibson.dropbear.id.au> and others)";
 673
 674 static struct pcmcia_driver orinoco_driver = {
 675         .owner          = THIS_MODULE,
 676         .drv            = {
 677                 .name   = "orinoco_cs",
 678         },
 679         .attach         = orinoco_cs_attach,
 680         .detach         = orinoco_cs_detach,
 681 };
 682
 683 static int __init
 684 init_orinoco_cs(void)
 685 {
 686         printk(KERN_DEBUG "%s\n", version);
 687
 688         return pcmcia_register_driver(&orinoco_driver);
 689 }
 690
 691 static void __exit
 692 exit_orinoco_cs(void)
 693 {
 694         pcmcia_unregister_driver(&orinoco_driver);
 695
 696         if (dev_list)
 697                 DEBUG(0, "orinoco_cs: Removing leftover devices.\n");
 698         while (dev_list != NULL) {
 699                 if (dev_list->state & DEV_CONFIG)
 700                         orinoco_cs_release((u_long) dev_list);
 701                 orinoco_cs_detach(dev_list);
 702         }
 703 }
 704
 705 module_init(init_orinoco_cs);
 706 module_exit(exit_orinoco_cs);
 707