drivers/net/wireless/atmel_cs.c

   1 /*** -*- linux-c -*- **********************************************************
   2
   3      Driver for Atmel at76c502 at76c504 and at76c506 wireless cards.
   4
   5         Copyright 2000-2001 ATMEL Corporation.
   6         Copyright 2003 Simon Kelley.
   7
   8     This code was developed from version 2.1.1 of the Atmel drivers,
   9     released by Atmel corp. under the GPL in December 2002. It also
  10     includes code from the Linux aironet drivers (C) Benjamin Reed,
  11     and the Linux PCMCIA package, (C) David Hinds.
  12
  13     For all queries about this code, please contact the current author,
  14     Simon Kelley <simon@thekelleys.org.uk> and not Atmel Corporation.
  15
  16     This program is free software; you can redistribute it and/or modify
  17     it under the terms of the GNU General Public License as published by
  18     the Free Software Foundation; either version 2 of the License, or
  19     (at your option) any later version.
  20
  21     This software is distributed in the hope that it will be useful,
  22     but WITHOUT ANY WARRANTY; without even the implied warranty of
  23     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  24     GNU General Public License for more details.
  25
  26     You should have received a copy of the GNU General Public License
  27     along with Atmel wireless lan drivers; if not, write to the Free Software
  28     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  29
  30 ******************************************************************************/
  31
  32 #include <linux/config.h>
  33 #ifdef __IN_PCMCIA_PACKAGE__
  34 #include <pcmcia/k_compat.h>
  35 #endif
  36 #include <linux/init.h>
  37 #include <linux/kernel.h>
  38 #include <linux/module.h>
  39 #include <linux/ptrace.h>
  40 #include <linux/slab.h>
  41 #include <linux/string.h>
  42 #include <linux/netdevice.h>
  43 #include <linux/moduleparam.h>
  44 #include <linux/device.h>
  45
  46 #include <pcmcia/version.h>
  47 #include <pcmcia/cs_types.h>
  48 #include <pcmcia/cs.h>
  49 #include <pcmcia/cistpl.h>
  50 #include <pcmcia/cisreg.h>
  51 #include <pcmcia/ds.h>
  52 #include <pcmcia/ciscode.h>
  53
  54 #include <asm/io.h>
  55 #include <asm/system.h>
  56 #include <linux/wireless.h>
  57
  58 #include "atmel.h"
  59
  60 /*
  61    All the PCMCIA modules use PCMCIA_DEBUG to control debugging.  If
  62    you do not define PCMCIA_DEBUG at all, all the debug code will be
  63    left out.  If you compile with PCMCIA_DEBUG=0, the debug code will
  64    be present but disabled -- but it can then be enabled for specific
  65    modules at load time with a 'pc_debug=#' option to insmod.
  66 */
  67 #ifdef PCMCIA_DEBUG
  68 static int pc_debug = PCMCIA_DEBUG;
  69 module_param(pc_debug, int, 0);
  70 static char *version = "$Revision: 1.2 $";
  71 #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args);
  72 #else
  73 #define DEBUG(n, args...)
  74 #endif
  75
  76 /*====================================================================*/
  77
  78 MODULE_AUTHOR("Simon Kelley");
  79 MODULE_DESCRIPTION("Support for Atmel at76c50x 802.11 wireless ethernet cards.");
  80 MODULE_LICENSE("GPL");
  81 MODULE_SUPPORTED_DEVICE("Atmel at76c50x PCMCIA cards");
  82
  83 /*====================================================================*/
  84
  85 /*
  86    The event() function is this driver's Card Services event handler.
  87    It will be called by Card Services when an appropriate card status
  88    event is received.  The config() and release() entry points are
  89    used to configure or release a socket, in response to card
  90    insertion and ejection events.  They are invoked from the atmel_cs
  91    event handler.
  92 */
  93
  94 static void atmel_config(dev_link_t *link);
  95 static void atmel_release(dev_link_t *link);
  96 static int atmel_event(event_t event, int priority,
  97                        event_callback_args_t *args);
  98
  99 /*
 100    The attach() and detach() entry points are used to create and destroy
 101    "instances" of the driver, where each instance represents everything
 102    needed to manage one actual PCMCIA card.
 103 */
 104
 105 static dev_link_t *atmel_attach(void);
 106 static void atmel_detach(dev_link_t *);
 107
 108 /*
 109    You'll also need to prototype all the functions that will actually
 110    be used to talk to your device.  See 'pcmem_cs' for a good example
 111    of a fully self-sufficient driver; the other drivers rely more or
 112    less on other parts of the kernel.
 113 */
 114
 115 /*
 116    The dev_info variable is the "key" that is used to match up this
 117    device driver with appropriate cards, through the card configuration
 118    database.
 119 */
 120
 121 static dev_info_t dev_info = "atmel_cs";
 122
 123 /*
 124    A linked list of "instances" of the  atmelnet device.  Each actual
 125    PCMCIA card corresponds to one device instance, and is described
 126    by one dev_link_t structure (defined in ds.h).
 127
 128    You may not want to use a linked list for this -- for example, the
 129    memory card driver uses an array of dev_link_t pointers, where minor
 130    device numbers are used to derive the corresponding array index.
 131 */
 132
 133 static dev_link_t *dev_list = NULL;
 134
 135 /*
 136    A dev_link_t structure has fields for most things that are needed
 137    to keep track of a socket, but there will usually be some device
 138    specific information that also needs to be kept track of.  The
 139    'priv' pointer in a dev_link_t structure can be used to point to
 140    a device-specific private data structure, like this.
 141
 142    A driver needs to provide a dev_node_t structure for each device
 143    on a card.  In some cases, there is only one device per card (for
 144    example, ethernet cards, modems).  In other cases, there may be
 145    many actual or logical devices (SCSI adapters, memory cards with
 146    multiple partitions).  The dev_node_t structures need to be kept
 147    in a linked list starting at the 'dev' field of a dev_link_t
 148    structure.  We allocate them in the card's private data structure,
 149    because they generally shouldn't be allocated dynamically.
 150
 151    In this case, we also provide a flag to indicate if a device is
 152    "stopped" due to a power management event, or card ejection.  The
 153    device IO routines can use a flag like this to throttle IO to a
 154    card that is not ready to accept it.
 155 */
 156
 157 typedef struct local_info_t {
 158         dev_node_t      node;
 159         struct net_device *eth_dev;
 160 } local_info_t;
 161
 162 /*======================================================================
 163
 164   atmel_attach() creates an "instance" of the driver, allocating
 165   local data structures for one device.  The device is registered
 166   with Card Services.
 167
 168   The dev_link structure is initialized, but we don't actually
 169   configure the card at this point -- we wait until we receive a
 170   card insertion event.
 171
 172   ======================================================================*/
 173
 174 static dev_link_t *atmel_attach(void)
 175 {
 176         client_reg_t client_reg;
 177         dev_link_t *link;
 178         local_info_t *local;
 179         int ret;
 180
 181         DEBUG(0, "atmel_attach()\n");
 182
 183         /* Initialize the dev_link_t structure */
 184         link = kmalloc(sizeof(struct dev_link_t), GFP_KERNEL);
 185         if (!link) {
 186                 printk(KERN_ERR "atmel_cs: no memory for new device\n");
 187                 return NULL;
 188         }
 189         memset(link, 0, sizeof(struct dev_link_t));
 190
 191         /* Interrupt setup */
 192         link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
 193         link->irq.IRQInfo1 = IRQ_LEVEL_ID;
 194         link->irq.Handler = NULL;
 195
 196         /*
 197           General socket configuration defaults can go here.  In this
 198           client, we assume very little, and rely on the CIS for almost
 199           everything.  In most clients, many details (i.e., number, sizes,
 200           and attributes of IO windows) are fixed by the nature of the
 201           device, and can be hard-wired here.
 202         */
 203         link->conf.Attributes = 0;
 204         link->conf.Vcc = 50;
 205         link->conf.IntType = INT_MEMORY_AND_IO;
 206
 207         /* Allocate space for private device-specific data */
 208         local = kmalloc(sizeof(local_info_t), GFP_KERNEL);
 209         if (!local) {
 210                 printk(KERN_ERR "atmel_cs: no memory for new device\n");
 211                 kfree (link);
 212                 return NULL;
 213         }
 214         memset(local, 0, sizeof(local_info_t));
 215         link->priv = local;
 216
 217         /* Register with Card Services */
 218         link->next = dev_list;
 219         dev_list = link;
 220         client_reg.dev_info = &dev_info;
 221         client_reg.EventMask =
 222                 CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL |
 223                 CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET |
 224                 CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME;
 225         client_reg.event_handler = &atmel_event;
 226         client_reg.Version = 0x0210;
 227         client_reg.event_callback_args.client_data = link;
 228         ret = pcmcia_register_client(&link->handle, &client_reg);
 229         if (ret != 0) {
 230                 cs_error(link->handle, RegisterClient, ret);
 231                 atmel_detach(link);
 232                 return NULL;
 233         }
 234
 235         return link;
 236 } /* atmel_attach */
 237
 238 /*======================================================================
 239
 240   This deletes a driver "instance".  The device is de-registered
 241   with Card Services.  If it has been released, all local data
 242   structures are freed.  Otherwise, the structures will be freed
 243   when the device is released.
 244
 245   ======================================================================*/
 246
 247 static void atmel_detach(dev_link_t *link)
 248 {
 249         dev_link_t **linkp;
 250
 251         DEBUG(0, "atmel_detach(0x%p)\n", link);
 252
 253         /* Locate device structure */
 254         for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
 255                 if (*linkp == link) break;
 256         if (*linkp == NULL)
 257                 return;
 258
 259         if (link->state & DEV_CONFIG)
 260                 atmel_release(link);
 261
 262         /* Break the link with Card Services */
 263         if (link->handle)
 264                 pcmcia_deregister_client(link->handle);
 265
 266         /* Unlink device structure, free pieces */
 267         *linkp = link->next;
 268         if (link->priv)
 269                 kfree(link->priv);
 270         kfree(link);
 271 }
 272
 273 /*======================================================================
 274
 275   atmel_config() is scheduled to run after a CARD_INSERTION event
 276   is received, to configure the PCMCIA socket, and to make the
 277   device available to the system.
 278
 279   ======================================================================*/
 280
 281 #define CS_CHECK(fn, ret) \
 282 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
 283
 284 /* Call-back function to interrogate PCMCIA-specific information
 285    about the current existance of the card */
 286 static int card_present(void *arg)
 287 {
 288         dev_link_t *link = (dev_link_t *)arg;
 289         if (link->state & DEV_SUSPEND)
 290                 return 0;
 291         else if (link->state & DEV_PRESENT)
 292                 return 1;
 293
 294         return 0;
 295 }
 296
 297 /* list of cards we know about and their firmware requirements.
 298    Go either by Manfid or version strings.
 299    Cards not in this list will need a firmware parameter to the module
 300    in all probability. Note that the SMC 2632 V2 and V3 have the same
 301    manfids, so we ignore those and use the version1 strings. */
 302
 303 static struct {
 304         int manf, card;
 305         char *ver1;
 306         AtmelFWType firmware;
 307         char *name;
 308 } card_table[] = {
 309         { 0, 0, "WLAN/802.11b PC CARD", ATMEL_FW_TYPE_502D, "Actiontec 802CAT1" },
 310         { 0, 0, "ATMEL/AT76C502AR", ATMEL_FW_TYPE_502, "NoName-RFMD" },
 311         { 0, 0, "ATMEL/AT76C502AR_D", ATMEL_FW_TYPE_502D, "NoName-revD" },
 312         { 0, 0, "ATMEL/AT76C502AR_E", ATMEL_FW_TYPE_502E, "NoName-revE" },
 313         { 0, 0, "ATMEL/AT76C504", ATMEL_FW_TYPE_504, "NoName-504" },
 314         { 0, 0, "ATMEL/AT76C504A", ATMEL_FW_TYPE_504A_2958, "NoName-504a-2958" },
 315         { 0, 0, "ATMEL/AT76C504_R", ATMEL_FW_TYPE_504_2958, "NoName-504-2958" },
 316         { MANFID_3COM, 0x0620, NULL, ATMEL_FW_TYPE_502_3COM, "3com 3CRWE62092B" },
 317         { MANFID_3COM, 0x0696, NULL, ATMEL_FW_TYPE_502_3COM, "3com 3CRSHPW196" },
 318         { 0, 0, "SMC/2632W-V2", ATMEL_FW_TYPE_502, "SMC 2632W-V2" },
 319         { 0, 0, "SMC/2632W", ATMEL_FW_TYPE_502D, "SMC 2632W-V3" },
 320         { 0xd601, 0x0007, NULL, ATMEL_FW_TYPE_502, "Sitecom WLAN-011" },
 321         { 0x01bf, 0x3302, NULL, ATMEL_FW_TYPE_502E, "Belkin F5D6020-V2" },
 322         { 0, 0, "BT/Voyager 1020 Laptop Adapter", ATMEL_FW_TYPE_502, "BT Voyager 1020" },
 323         { 0, 0, "IEEE 802.11b/Wireless LAN PC Card", ATMEL_FW_TYPE_502, "Siemens Gigaset PC Card II" },
 324         { 0, 0, "CNet/CNWLC 11Mbps Wireless PC Card V-5", ATMEL_FW_TYPE_502E, "CNet CNWLC-811ARL" },
 325         { 0, 0, "Wireless/PC_CARD", ATMEL_FW_TYPE_502D, "Planet WL-3552" },
 326         { 0, 0, "OEM/11Mbps Wireless LAN PC Card V-3", ATMEL_FW_TYPE_502, "OEM 11Mbps WLAN PCMCIA Card" },
 327         { 0, 0, "11WAVE/11WP611AL-E", ATMEL_FW_TYPE_502E, "11WAVE WaveBuddy" },
 328         { 0, 0, "LG/LW2100N", ATMEL_FW_TYPE_502E, "LG LW2100N 11Mbps WLAN PCMCIA Card" },
 329 };
 330
 331 static void atmel_config(dev_link_t *link)
 332 {
 333         client_handle_t handle;
 334         tuple_t tuple;
 335         cisparse_t parse;
 336         local_info_t *dev;
 337         int last_fn, last_ret;
 338         u_char buf[64];
 339         int card_index = -1, done = 0;
 340
 341         handle = link->handle;
 342         dev = link->priv;
 343
 344         DEBUG(0, "atmel_config(0x%p)\n", link);
 345
 346         tuple.Attributes = 0;
 347         tuple.TupleData = buf;
 348         tuple.TupleDataMax = sizeof(buf);
 349         tuple.TupleOffset = 0;
 350
 351         tuple.DesiredTuple = CISTPL_MANFID;
 352         if (pcmcia_get_first_tuple(handle, &tuple) == 0) {
 353                 int i;
 354                 cistpl_manfid_t *manfid;
 355                 CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
 356                 CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
 357                 manfid = &(parse.manfid);
 358                 for (i = 0; i < sizeof(card_table)/sizeof(card_table[0]); i++) {
 359                         if (!card_table[i].ver1 &&
 360                             manfid->manf == card_table[i].manf &&
 361                             manfid->card == card_table[i].card) {
 362                                 card_index = i;
 363                                 done = 1;
 364                         }
 365                 }
 366         }
 367
 368         tuple.DesiredTuple = CISTPL_VERS_1;
 369         if (!done && (pcmcia_get_first_tuple(handle, &tuple) == 0)) {
 370                 int i, j, k;
 371                 cistpl_vers_1_t *ver1;
 372                 CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
 373                 CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
 374                 ver1 = &(parse.version_1);
 375
 376                 for (i = 0; i < sizeof(card_table)/sizeof(card_table[0]); i++) {
 377                         for (j = 0; j < ver1->ns; j++) {
 378                                 char *p = card_table[i].ver1;
 379                                 char *q = &ver1->str[ver1->ofs[j]];
 380                                 if (!p)
 381                                         goto mismatch;
 382                                 for (k = 0; k < j; k++) {
 383                                         while ((*p != '\0') && (*p != '/')) p++;
 384                                         if (*p == '\0') {
 385                                                 if (*q != '\0')
 386                                                         goto mismatch;
 387                                         } else {
 388                                                 p++;
 389                                         }
 390                                 }
 391                                 while((*q != '\0') && (*p != '\0') &&
 392                                       (*p != '/') && (*p == *q)) p++, q++;
 393                                 if (((*p != '\0') && *p != '/') || *q != '\0')
 394                                         goto mismatch;
 395                         }
 396                         card_index = i;
 397                         break;  /* done */
 398
 399                 mismatch:
 400                         j = 0; /* dummy stmt to shut up compiler */
 401                 }
 402         }
 403
 404         /*
 405           This reads the card's CONFIG tuple to find its configuration
 406           registers.
 407         */
 408         tuple.DesiredTuple = CISTPL_CONFIG;
 409         CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
 410         CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
 411         CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
 412         link->conf.ConfigBase = parse.config.base;
 413         link->conf.Present = parse.config.rmask[0];
 414
 415         /* Configure card */
 416         link->state |= DEV_CONFIG;
 417
 418         /*
 419           In this loop, we scan the CIS for configuration table entries,
 420           each of which describes a valid card configuration, including
 421           voltage, IO window, memory window, and interrupt settings.
 422
 423           We make no assumptions about the card to be configured: we use
 424           just the information available in the CIS.  In an ideal world,
 425           this would work for any PCMCIA card, but it requires a complete
 426           and accurate CIS.  In practice, a driver usually "knows" most of
 427           these things without consulting the CIS, and most client drivers
 428           will only use the CIS to fill in implementation-defined details.
 429         */
 430         tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
 431         CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
 432         while (1) {
 433                 cistpl_cftable_entry_t dflt = { 0 };
 434                 cistpl_cftable_entry_t *cfg = &(parse.cftable_entry);
 435                 if (pcmcia_get_tuple_data(handle, &tuple) != 0 ||
 436                                 pcmcia_parse_tuple(handle, &tuple, &parse) != 0)
 437                         goto next_entry;
 438
 439                 if (cfg->flags & CISTPL_CFTABLE_DEFAULT) dflt = *cfg;
 440                 if (cfg->index == 0) goto next_entry;
 441                 link->conf.ConfigIndex = cfg->index;
 442
 443                 /* Does this card need audio output? */
 444                 if (cfg->flags & CISTPL_CFTABLE_AUDIO) {
 445                         link->conf.Attributes |= CONF_ENABLE_SPKR;
 446                         link->conf.Status = CCSR_AUDIO_ENA;
 447                 }
 448
 449                 /* Use power settings for Vcc and Vpp if present */
 450                 /*  Note that the CIS values need to be rescaled */
 451                 if (cfg->vcc.present & (1<<CISTPL_POWER_VNOM))
 452                         link->conf.Vcc = cfg->vcc.param[CISTPL_POWER_VNOM]/10000;
 453                 else if (dflt.vcc.present & (1<<CISTPL_POWER_VNOM))
 454                         link->conf.Vcc = dflt.vcc.param[CISTPL_POWER_VNOM]/10000;
 455
 456                 if (cfg->vpp1.present & (1<<CISTPL_POWER_VNOM))
 457                         link->conf.Vpp1 = link->conf.Vpp2 =
 458                                 cfg->vpp1.param[CISTPL_POWER_VNOM]/10000;
 459                 else if (dflt.vpp1.present & (1<<CISTPL_POWER_VNOM))
 460                         link->conf.Vpp1 = link->conf.Vpp2 =
 461                                 dflt.vpp1.param[CISTPL_POWER_VNOM]/10000;
 462
 463                 /* Do we need to allocate an interrupt? */
 464                 if (cfg->irq.IRQInfo1 || dflt.irq.IRQInfo1)
 465                         link->conf.Attributes |= CONF_ENABLE_IRQ;
 466
 467                 /* IO window settings */
 468                 link->io.NumPorts1 = link->io.NumPorts2 = 0;
 469                 if ((cfg->io.nwin > 0) || (dflt.io.nwin > 0)) {
 470                         cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt.io;
 471                         link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
 472                         if (!(io->flags & CISTPL_IO_8BIT))
 473                                 link->io.Attributes1 = IO_DATA_PATH_WIDTH_16;
 474                         if (!(io->flags & CISTPL_IO_16BIT))
 475                                 link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
 476                         link->io.BasePort1 = io->win[0].base;
 477                         link->io.NumPorts1 = io->win[0].len;
 478                         if (io->nwin > 1) {
 479                                 link->io.Attributes2 = link->io.Attributes1;
 480                                 link->io.BasePort2 = io->win[1].base;
 481                                 link->io.NumPorts2 = io->win[1].len;
 482                         }
 483                 }
 484
 485                 /* This reserves IO space but doesn't actually enable it */
 486                 if (pcmcia_request_io(link->handle, &link->io) != 0)
 487                         goto next_entry;
 488
 489                 /* If we got this far, we're cool! */
 490                 break;
 491
 492         next_entry:
 493                 CS_CHECK(GetNextTuple, pcmcia_get_next_tuple(handle, &tuple));
 494         }
 495
 496         /*
 497           Allocate an interrupt line.  Note that this does not assign a
 498           handler to the interrupt, unless the 'Handler' member of the
 499           irq structure is initialized.
 500         */
 501         if (link->conf.Attributes & CONF_ENABLE_IRQ)
 502                 CS_CHECK(RequestIRQ, pcmcia_request_irq(link->handle, &link->irq));
 503
 504         /*
 505           This actually configures the PCMCIA socket -- setting up
 506           the I/O windows and the interrupt mapping, and putting the
 507           card and host interface into "Memory and IO" mode.
 508         */
 509         CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link->handle, &link->conf));
 510
 511         if (link->irq.AssignedIRQ == 0) {
 512                 printk(KERN_ALERT
 513                        "atmel: cannot assign IRQ: check that CONFIG_ISA is set in kernel config.");
 514                 goto cs_failed;
 515         }
 516
 517         ((local_info_t*)link->priv)->eth_dev =
 518                 init_atmel_card(link->irq.AssignedIRQ,
 519                                 link->io.BasePort1,
 520                                 card_index == -1 ? ATMEL_FW_TYPE_NONE :  card_table[card_index].firmware,
 521                                 &handle_to_dev(handle),
 522                                 card_present,
 523                                 link);
 524         if (!((local_info_t*)link->priv)->eth_dev)
 525                 goto cs_failed;
 526
 527         /*
 528           At this point, the dev_node_t structure(s) need to be
 529           initialized and arranged in a linked list at link->dev.
 530         */
 531         strcpy(dev->node.dev_name, ((local_info_t*)link->priv)->eth_dev->name );
 532         dev->node.major = dev->node.minor = 0;
 533         link->dev = &dev->node;
 534
 535         /* Finally, report what we've done */
 536         printk(KERN_INFO "%s: %s%sindex 0x%02x: Vcc %d.%d",
 537                dev->node.dev_name,
 538                card_index == -1 ? "" :  card_table[card_index].name,
 539                card_index == -1 ? "" : " ",
 540                link->conf.ConfigIndex,
 541                link->conf.Vcc/10, link->conf.Vcc%10);
 542         if (link->conf.Vpp1)
 543                 printk(", Vpp %d.%d", link->conf.Vpp1/10, link->conf.Vpp1%10);
 544         if (link->conf.Attributes & CONF_ENABLE_IRQ)
 545                 printk(", irq %d", link->irq.AssignedIRQ);
 546         if (link->io.NumPorts1)
 547                 printk(", io 0x%04x-0x%04x", link->io.BasePort1,
 548                        link->io.BasePort1+link->io.NumPorts1-1);
 549         if (link->io.NumPorts2)
 550                 printk(" & 0x%04x-0x%04x", link->io.BasePort2,
 551                        link->io.BasePort2+link->io.NumPorts2-1);
 552         printk("\n");
 553
 554         link->state &= ~DEV_CONFIG_PENDING;
 555         return;
 556
 557  cs_failed:
 558         cs_error(link->handle, last_fn, last_ret);
 559         atmel_release(link);
 560 }
 561
 562 /*======================================================================
 563
 564   After a card is removed, atmel_release() will unregister the
 565   device, and release the PCMCIA configuration.  If the device is
 566   still open, this will be postponed until it is closed.
 567
 568   ======================================================================*/
 569
 570 static void atmel_release(dev_link_t *link)
 571 {
 572         struct net_device *dev = ((local_info_t*)link->priv)->eth_dev;
 573
 574         DEBUG(0, "atmel_release(0x%p)\n", link);
 575
 576         /* Unlink the device chain */
 577         link->dev = NULL;
 578
 579         if (dev)
 580                 stop_atmel_card(dev, 0);
 581         ((local_info_t*)link->priv)->eth_dev = NULL;
 582
 583         /* Don't bother checking to see if these succeed or not */
 584         pcmcia_release_configuration(link->handle);
 585         if (link->io.NumPorts1)
 586                 pcmcia_release_io(link->handle, &link->io);
 587         if (link->irq.AssignedIRQ)
 588                 pcmcia_release_irq(link->handle, &link->irq);
 589         link->state &= ~DEV_CONFIG;
 590 }
 591
 592 /*======================================================================
 593
 594   The card status event handler.  Mostly, this schedules other
 595   stuff to run after an event is received.
 596
 597   When a CARD_REMOVAL event is received, we immediately set a
 598   private flag to block future accesses to this device.  All the
 599   functions that actually access the device should check this flag
 600   to make sure the card is still present.
 601
 602   ======================================================================*/
 603
 604 static int atmel_event(event_t event, int priority,
 605                       event_callback_args_t *args)
 606 {
 607         dev_link_t *link = args->client_data;
 608         local_info_t *local = link->priv;
 609
 610         DEBUG(1, "atmel_event(0x%06x)\n", event);
 611
 612         switch (event) {
 613         case CS_EVENT_CARD_REMOVAL:
 614                 link->state &= ~DEV_PRESENT;
 615                 if (link->state & DEV_CONFIG) {
 616                         netif_device_detach(local->eth_dev);
 617                         atmel_release(link);
 618                 }
 619                 break;
 620         case CS_EVENT_CARD_INSERTION:
 621                 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
 622                 atmel_config(link);
 623                 break;
 624         case CS_EVENT_PM_SUSPEND:
 625                 link->state |= DEV_SUSPEND;
 626                 /* Fall through... */
 627         case CS_EVENT_RESET_PHYSICAL:
 628                 if (link->state & DEV_CONFIG) {
 629                         netif_device_detach(local->eth_dev);
 630                         pcmcia_release_configuration(link->handle);
 631                 }
 632                 break;
 633         case CS_EVENT_PM_RESUME:
 634                 link->state &= ~DEV_SUSPEND;
 635                 /* Fall through... */
 636         case CS_EVENT_CARD_RESET:
 637                 if (link->state & DEV_CONFIG) {
 638                         pcmcia_request_configuration(link->handle, &link->conf);
 639                         atmel_open(local->eth_dev);
 640                         netif_device_attach(local->eth_dev);
 641                 }
 642                 break;
 643         }
 644         return 0;
 645 } /* atmel_event */
 646
 647 /*====================================================================*/
 648 static struct pcmcia_driver atmel_driver = {
 649         .owner          = THIS_MODULE,
 650         .drv            = {
 651                 .name   = "atmel_cs",
 652         },
 653         .attach         = atmel_attach,
 654         .detach         = atmel_detach,
 655 };
 656
 657 static int atmel_cs_init(void)
 658 {
 659         return pcmcia_register_driver(&atmel_driver);
 660 }
 661
 662 static void atmel_cs_cleanup(void)
 663 {
 664         pcmcia_unregister_driver(&atmel_driver);
 665         BUG_ON(dev_list != NULL);
 666 }
 667
 668 /*
 669     This program is free software; you can redistribute it and/or
 670     modify it under the terms of the GNU General Public License
 671     as published by the Free Software Foundation; either version 2
 672     of the License, or (at your option) any later version.
 673
 674     This program is distributed in the hope that it will be useful,
 675     but WITHOUT ANY WARRANTY; without even the implied warranty of
 676     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 677     GNU General Public License for more details.
 678
 679     In addition:
 680
 681     Redistribution and use in source and binary forms, with or without
 682     modification, are permitted provided that the following conditions
 683     are met:
 684
 685     1. Redistributions of source code must retain the above copyright
 686        notice, this list of conditions and the following disclaimer.
 687     2. Redistributions in binary form must reproduce the above copyright
 688        notice, this list of conditions and the following disclaimer in the
 689        documentation and/or other materials provided with the distribution.
 690     3. The name of the author may not be used to endorse or promote
 691        products derived from this software without specific prior written
 692        permission.
 693
 694     THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 695     IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 696     WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 697     ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
 698     INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 699     (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 700     SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 701     HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 702     STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
 703     IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 704     POSSIBILITY OF SUCH DAMAGE.
 705 */
 706
 707 module_init(atmel_cs_init);
 708 module_exit(atmel_cs_cleanup);