1 /* 2 * ds.c -- 16-bit PCMCIA core support 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License version 2 as 6 * published by the Free Software Foundation. 7 * 8 * The initial developer of the original code is David A. Hinds 9 * <dahinds@users.sourceforge.net>. Portions created by David A. Hinds 10 * are Copyright (C) 1999 David A. Hinds. All Rights Reserved. 11 * 12 * (C) 1999 David A. Hinds 13 * (C) 2003 - 2006 Dominik Brodowski 14 */ 15 16 #include <linux/kernel.h> 17 #include <linux/module.h> 18 #include <linux/init.h> 19 #include <linux/errno.h> 20 #include <linux/list.h> 21 #include <linux/delay.h> 22 #include <linux/workqueue.h> 23 #include <linux/crc32.h> 24 #include <linux/firmware.h> 25 #include <linux/kref.h> 26 #include <linux/dma-mapping.h> 27 #include <linux/slab.h> 28 29 #include <pcmcia/cs_types.h> 30 #include <pcmcia/cs.h> 31 #include <pcmcia/cistpl.h> 32 #include <pcmcia/ds.h> 33 #include <pcmcia/ss.h> 34 35 #include "cs_internal.h" 36 37 /*====================================================================*/ 38 39 /* Module parameters */ 40 41 MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>"); 42 MODULE_DESCRIPTION("PCMCIA Driver Services"); 43 MODULE_LICENSE("GPL"); 44 45 46 /*====================================================================*/ 47 48 static void pcmcia_check_driver(struct pcmcia_driver *p_drv) 49 { 50 struct pcmcia_device_id *did = p_drv->id_table; 51 unsigned int i; 52 u32 hash; 53 54 if (!p_drv->probe || !p_drv->remove) 55 printk(KERN_DEBUG "pcmcia: %s lacks a requisite callback " 56 "function\n", p_drv->drv.name); 57 58 while (did && did->match_flags) { 59 for (i = 0; i < 4; i++) { 60 if (!did->prod_id[i]) 61 continue; 62 63 hash = crc32(0, did->prod_id[i], strlen(did->prod_id[i])); 64 if (hash == did->prod_id_hash[i]) 65 continue; 66 67 printk(KERN_DEBUG "pcmcia: %s: invalid hash for " 68 "product string \"%s\": is 0x%x, should " 69 "be 0x%x\n", p_drv->drv.name, did->prod_id[i], 70 did->prod_id_hash[i], hash); 71 printk(KERN_DEBUG "pcmcia: see " 72 "Documentation/pcmcia/devicetable.txt for " 73 "details\n"); 74 } 75 did++; 76 } 77 78 return; 79 } 80 81 82 /*======================================================================*/ 83 84 85 struct pcmcia_dynid { 86 struct list_head node; 87 struct pcmcia_device_id id; 88 }; 89 90 /** 91 * pcmcia_store_new_id - add a new PCMCIA device ID to this driver and re-probe devices 92 * @driver: target device driver 93 * @buf: buffer for scanning device ID data 94 * @count: input size 95 * 96 * Adds a new dynamic PCMCIA device ID to this driver, 97 * and causes the driver to probe for all devices again. 98 */ 99 static ssize_t 100 pcmcia_store_new_id(struct device_driver *driver, const char *buf, size_t count) 101 { 102 struct pcmcia_dynid *dynid; 103 struct pcmcia_driver *pdrv = to_pcmcia_drv(driver); 104 __u16 match_flags, manf_id, card_id; 105 __u8 func_id, function, device_no; 106 __u32 prod_id_hash[4] = {0, 0, 0, 0}; 107 int fields = 0; 108 int retval = 0; 109 110 fields = sscanf(buf, "%hx %hx %hx %hhx %hhx %hhx %x %x %x %x", 111 &match_flags, &manf_id, &card_id, &func_id, &function, &device_no, 112 &prod_id_hash[0], &prod_id_hash[1], &prod_id_hash[2], &prod_id_hash[3]); 113 if (fields < 6) 114 return -EINVAL; 115 116 dynid = kzalloc(sizeof(struct pcmcia_dynid), GFP_KERNEL); 117 if (!dynid) 118 return -ENOMEM; 119 120 dynid->id.match_flags = match_flags; 121 dynid->id.manf_id = manf_id; 122 dynid->id.card_id = card_id; 123 dynid->id.func_id = func_id; 124 dynid->id.function = function; 125 dynid->id.device_no = device_no; 126 memcpy(dynid->id.prod_id_hash, prod_id_hash, sizeof(__u32) * 4); 127 128 mutex_lock(&pdrv->dynids.lock); 129 list_add_tail(&dynid->node, &pdrv->dynids.list); 130 mutex_unlock(&pdrv->dynids.lock); 131 132 if (get_driver(&pdrv->drv)) { 133 retval = driver_attach(&pdrv->drv); 134 put_driver(&pdrv->drv); 135 } 136 137 if (retval) 138 return retval; 139 return count; 140 } 141 static DRIVER_ATTR(new_id, S_IWUSR, NULL, pcmcia_store_new_id); 142 143 static void 144 pcmcia_free_dynids(struct pcmcia_driver *drv) 145 { 146 struct pcmcia_dynid *dynid, *n; 147 148 mutex_lock(&drv->dynids.lock); 149 list_for_each_entry_safe(dynid, n, &drv->dynids.list, node) { 150 list_del(&dynid->node); 151 kfree(dynid); 152 } 153 mutex_unlock(&drv->dynids.lock); 154 } 155 156 static int 157 pcmcia_create_newid_file(struct pcmcia_driver *drv) 158 { 159 int error = 0; 160 if (drv->probe != NULL) 161 error = driver_create_file(&drv->drv, &driver_attr_new_id); 162 return error; 163 } 164 165 166 /** 167 * pcmcia_register_driver - register a PCMCIA driver with the bus core 168 * @driver: the &driver being registered 169 * 170 * Registers a PCMCIA driver with the PCMCIA bus core. 171 */ 172 int pcmcia_register_driver(struct pcmcia_driver *driver) 173 { 174 int error; 175 176 if (!driver) 177 return -EINVAL; 178 179 pcmcia_check_driver(driver); 180 181 /* initialize common fields */ 182 driver->drv.bus = &pcmcia_bus_type; 183 driver->drv.owner = driver->owner; 184 mutex_init(&driver->dynids.lock); 185 INIT_LIST_HEAD(&driver->dynids.list); 186 187 pr_debug("registering driver %s\n", driver->drv.name); 188 189 error = driver_register(&driver->drv); 190 if (error < 0) 191 return error; 192 193 error = pcmcia_create_newid_file(driver); 194 if (error) 195 driver_unregister(&driver->drv); 196 197 return error; 198 } 199 EXPORT_SYMBOL(pcmcia_register_driver); 200 201 /** 202 * pcmcia_unregister_driver - unregister a PCMCIA driver with the bus core 203 * @driver: the &driver being unregistered 204 */ 205 void pcmcia_unregister_driver(struct pcmcia_driver *driver) 206 { 207 pr_debug("unregistering driver %s\n", driver->drv.name); 208 driver_unregister(&driver->drv); 209 pcmcia_free_dynids(driver); 210 } 211 EXPORT_SYMBOL(pcmcia_unregister_driver); 212 213 214 /* pcmcia_device handling */ 215 216 struct pcmcia_device *pcmcia_get_dev(struct pcmcia_device *p_dev) 217 { 218 struct device *tmp_dev; 219 tmp_dev = get_device(&p_dev->dev); 220 if (!tmp_dev) 221 return NULL; 222 return to_pcmcia_dev(tmp_dev); 223 } 224 225 void pcmcia_put_dev(struct pcmcia_device *p_dev) 226 { 227 if (p_dev) 228 put_device(&p_dev->dev); 229 } 230 231 static void pcmcia_release_function(struct kref *ref) 232 { 233 struct config_t *c = container_of(ref, struct config_t, ref); 234 pr_debug("releasing config_t\n"); 235 kfree(c); 236 } 237 238 static void pcmcia_release_dev(struct device *dev) 239 { 240 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); 241 int i; 242 dev_dbg(dev, "releasing device\n"); 243 pcmcia_put_socket(p_dev->socket); 244 for (i = 0; i < 4; i++) 245 kfree(p_dev->prod_id[i]); 246 kfree(p_dev->devname); 247 kref_put(&p_dev->function_config->ref, pcmcia_release_function); 248 kfree(p_dev); 249 } 250 251 252 static int pcmcia_device_probe(struct device *dev) 253 { 254 struct pcmcia_device *p_dev; 255 struct pcmcia_driver *p_drv; 256 struct pcmcia_socket *s; 257 cistpl_config_t cis_config; 258 int ret = 0; 259 260 dev = get_device(dev); 261 if (!dev) 262 return -ENODEV; 263 264 p_dev = to_pcmcia_dev(dev); 265 p_drv = to_pcmcia_drv(dev->driver); 266 s = p_dev->socket; 267 268 dev_dbg(dev, "trying to bind to %s\n", p_drv->drv.name); 269 270 if ((!p_drv->probe) || (!p_dev->function_config) || 271 (!try_module_get(p_drv->owner))) { 272 ret = -EINVAL; 273 goto put_dev; 274 } 275 276 /* set up some more device information */ 277 ret = pccard_read_tuple(p_dev->socket, p_dev->func, CISTPL_CONFIG, 278 &cis_config); 279 if (!ret) { 280 p_dev->conf.ConfigBase = cis_config.base; 281 p_dev->conf.Present = cis_config.rmask[0]; 282 } else { 283 dev_printk(KERN_INFO, dev, 284 "pcmcia: could not parse base and rmask0 of CIS\n"); 285 p_dev->conf.ConfigBase = 0; 286 p_dev->conf.Present = 0; 287 } 288 289 ret = p_drv->probe(p_dev); 290 if (ret) { 291 dev_dbg(dev, "binding to %s failed with %d\n", 292 p_drv->drv.name, ret); 293 goto put_module; 294 } 295 296 mutex_lock(&s->ops_mutex); 297 if ((s->pcmcia_state.has_pfc) && 298 (p_dev->socket->device_count == 1) && (p_dev->device_no == 0)) 299 pcmcia_parse_uevents(s, PCMCIA_UEVENT_REQUERY); 300 mutex_unlock(&s->ops_mutex); 301 302 put_module: 303 if (ret) 304 module_put(p_drv->owner); 305 put_dev: 306 if (ret) 307 put_device(dev); 308 return ret; 309 } 310 311 312 /* 313 * Removes a PCMCIA card from the device tree and socket list. 314 */ 315 static void pcmcia_card_remove(struct pcmcia_socket *s, struct pcmcia_device *leftover) 316 { 317 struct pcmcia_device *p_dev; 318 struct pcmcia_device *tmp; 319 320 dev_dbg(leftover ? &leftover->dev : &s->dev, 321 "pcmcia_card_remove(%d) %s\n", s->sock, 322 leftover ? leftover->devname : ""); 323 324 mutex_lock(&s->ops_mutex); 325 if (!leftover) 326 s->device_count = 0; 327 else 328 s->device_count = 1; 329 mutex_unlock(&s->ops_mutex); 330 331 /* unregister all pcmcia_devices registered with this socket, except leftover */ 332 list_for_each_entry_safe(p_dev, tmp, &s->devices_list, socket_device_list) { 333 if (p_dev == leftover) 334 continue; 335 336 mutex_lock(&s->ops_mutex); 337 list_del(&p_dev->socket_device_list); 338 mutex_unlock(&s->ops_mutex); 339 340 dev_dbg(&p_dev->dev, "unregistering device\n"); 341 device_unregister(&p_dev->dev); 342 } 343 344 return; 345 } 346 347 static int pcmcia_device_remove(struct device *dev) 348 { 349 struct pcmcia_device *p_dev; 350 struct pcmcia_driver *p_drv; 351 int i; 352 353 p_dev = to_pcmcia_dev(dev); 354 p_drv = to_pcmcia_drv(dev->driver); 355 356 dev_dbg(dev, "removing device\n"); 357 358 /* If we're removing the primary module driving a 359 * pseudo multi-function card, we need to unbind 360 * all devices 361 */ 362 if ((p_dev->socket->pcmcia_state.has_pfc) && 363 (p_dev->socket->device_count > 0) && 364 (p_dev->device_no == 0)) 365 pcmcia_card_remove(p_dev->socket, p_dev); 366 367 /* detach the "instance" */ 368 if (!p_drv) 369 return 0; 370 371 if (p_drv->remove) 372 p_drv->remove(p_dev); 373 374 /* check for proper unloading */ 375 if (p_dev->_irq || p_dev->_io || p_dev->_locked) 376 dev_printk(KERN_INFO, dev, 377 "pcmcia: driver %s did not release config properly\n", 378 p_drv->drv.name); 379 380 for (i = 0; i < MAX_WIN; i++) 381 if (p_dev->_win & CLIENT_WIN_REQ(i)) 382 dev_printk(KERN_INFO, dev, 383 "pcmcia: driver %s did not release window properly\n", 384 p_drv->drv.name); 385 386 /* references from pcmcia_probe_device */ 387 pcmcia_put_dev(p_dev); 388 module_put(p_drv->owner); 389 390 return 0; 391 } 392 393 394 /* 395 * pcmcia_device_query -- determine information about a pcmcia device 396 */ 397 static int pcmcia_device_query(struct pcmcia_device *p_dev) 398 { 399 cistpl_manfid_t manf_id; 400 cistpl_funcid_t func_id; 401 cistpl_vers_1_t *vers1; 402 unsigned int i; 403 404 vers1 = kmalloc(sizeof(*vers1), GFP_KERNEL); 405 if (!vers1) 406 return -ENOMEM; 407 408 if (!pccard_read_tuple(p_dev->socket, BIND_FN_ALL, 409 CISTPL_MANFID, &manf_id)) { 410 mutex_lock(&p_dev->socket->ops_mutex); 411 p_dev->manf_id = manf_id.manf; 412 p_dev->card_id = manf_id.card; 413 p_dev->has_manf_id = 1; 414 p_dev->has_card_id = 1; 415 mutex_unlock(&p_dev->socket->ops_mutex); 416 } 417 418 if (!pccard_read_tuple(p_dev->socket, p_dev->func, 419 CISTPL_FUNCID, &func_id)) { 420 mutex_lock(&p_dev->socket->ops_mutex); 421 p_dev->func_id = func_id.func; 422 p_dev->has_func_id = 1; 423 mutex_unlock(&p_dev->socket->ops_mutex); 424 } else { 425 /* rule of thumb: cards with no FUNCID, but with 426 * common memory device geometry information, are 427 * probably memory cards (from pcmcia-cs) */ 428 cistpl_device_geo_t *devgeo; 429 430 devgeo = kmalloc(sizeof(*devgeo), GFP_KERNEL); 431 if (!devgeo) { 432 kfree(vers1); 433 return -ENOMEM; 434 } 435 if (!pccard_read_tuple(p_dev->socket, p_dev->func, 436 CISTPL_DEVICE_GEO, devgeo)) { 437 dev_dbg(&p_dev->dev, 438 "mem device geometry probably means " 439 "FUNCID_MEMORY\n"); 440 mutex_lock(&p_dev->socket->ops_mutex); 441 p_dev->func_id = CISTPL_FUNCID_MEMORY; 442 p_dev->has_func_id = 1; 443 mutex_unlock(&p_dev->socket->ops_mutex); 444 } 445 kfree(devgeo); 446 } 447 448 if (!pccard_read_tuple(p_dev->socket, BIND_FN_ALL, CISTPL_VERS_1, 449 vers1)) { 450 mutex_lock(&p_dev->socket->ops_mutex); 451 for (i = 0; i < min_t(unsigned int, 4, vers1->ns); i++) { 452 char *tmp; 453 unsigned int length; 454 char *new; 455 456 tmp = vers1->str + vers1->ofs[i]; 457 458 length = strlen(tmp) + 1; 459 if ((length < 2) || (length > 255)) 460 continue; 461 462 new = kmalloc(sizeof(char) * length, GFP_KERNEL); 463 if (!new) 464 continue; 465 466 new = strncpy(new, tmp, length); 467 468 tmp = p_dev->prod_id[i]; 469 p_dev->prod_id[i] = new; 470 kfree(tmp); 471 } 472 mutex_unlock(&p_dev->socket->ops_mutex); 473 } 474 475 kfree(vers1); 476 return 0; 477 } 478 479 480 struct pcmcia_device *pcmcia_device_add(struct pcmcia_socket *s, unsigned int function) 481 { 482 struct pcmcia_device *p_dev, *tmp_dev; 483 int i; 484 485 s = pcmcia_get_socket(s); 486 if (!s) 487 return NULL; 488 489 pr_debug("adding device to %d, function %d\n", s->sock, function); 490 491 p_dev = kzalloc(sizeof(struct pcmcia_device), GFP_KERNEL); 492 if (!p_dev) 493 goto err_put; 494 495 mutex_lock(&s->ops_mutex); 496 p_dev->device_no = (s->device_count++); 497 mutex_unlock(&s->ops_mutex); 498 499 /* max of 2 PFC devices */ 500 if ((p_dev->device_no >= 2) && (function == 0)) 501 goto err_free; 502 503 /* max of 4 devices overall */ 504 if (p_dev->device_no >= 4) 505 goto err_free; 506 507 p_dev->socket = s; 508 p_dev->func = function; 509 510 p_dev->dev.bus = &pcmcia_bus_type; 511 p_dev->dev.parent = s->dev.parent; 512 p_dev->dev.release = pcmcia_release_dev; 513 /* by default don't allow DMA */ 514 p_dev->dma_mask = DMA_MASK_NONE; 515 p_dev->dev.dma_mask = &p_dev->dma_mask; 516 dev_set_name(&p_dev->dev, "%d.%d", p_dev->socket->sock, p_dev->device_no); 517 if (!dev_name(&p_dev->dev)) 518 goto err_free; 519 p_dev->devname = kasprintf(GFP_KERNEL, "pcmcia%s", dev_name(&p_dev->dev)); 520 if (!p_dev->devname) 521 goto err_free; 522 dev_dbg(&p_dev->dev, "devname is %s\n", p_dev->devname); 523 524 mutex_lock(&s->ops_mutex); 525 526 /* 527 * p_dev->function_config must be the same for all card functions. 528 * Note that this is serialized by ops_mutex, so that only one 529 * such struct will be created. 530 */ 531 list_for_each_entry(tmp_dev, &s->devices_list, socket_device_list) 532 if (p_dev->func == tmp_dev->func) { 533 p_dev->function_config = tmp_dev->function_config; 534 p_dev->io = tmp_dev->io; 535 p_dev->irq = tmp_dev->irq; 536 kref_get(&p_dev->function_config->ref); 537 } 538 539 /* Add to the list in pcmcia_bus_socket */ 540 list_add(&p_dev->socket_device_list, &s->devices_list); 541 542 if (pcmcia_setup_irq(p_dev)) 543 dev_warn(&p_dev->dev, 544 "IRQ setup failed -- device might not work\n"); 545 546 if (!p_dev->function_config) { 547 dev_dbg(&p_dev->dev, "creating config_t\n"); 548 p_dev->function_config = kzalloc(sizeof(struct config_t), 549 GFP_KERNEL); 550 if (!p_dev->function_config) { 551 mutex_unlock(&s->ops_mutex); 552 goto err_unreg; 553 } 554 kref_init(&p_dev->function_config->ref); 555 } 556 mutex_unlock(&s->ops_mutex); 557 558 dev_printk(KERN_NOTICE, &p_dev->dev, 559 "pcmcia: registering new device %s (IRQ: %d)\n", 560 p_dev->devname, p_dev->irq); 561 562 pcmcia_device_query(p_dev); 563 564 if (device_register(&p_dev->dev)) 565 goto err_unreg; 566 567 return p_dev; 568 569 err_unreg: 570 mutex_lock(&s->ops_mutex); 571 list_del(&p_dev->socket_device_list); 572 mutex_unlock(&s->ops_mutex); 573 574 err_free: 575 mutex_lock(&s->ops_mutex); 576 s->device_count--; 577 mutex_unlock(&s->ops_mutex); 578 579 for (i = 0; i < 4; i++) 580 kfree(p_dev->prod_id[i]); 581 kfree(p_dev->devname); 582 kfree(p_dev); 583 err_put: 584 pcmcia_put_socket(s); 585 586 return NULL; 587 } 588 589 590 static int pcmcia_card_add(struct pcmcia_socket *s) 591 { 592 cistpl_longlink_mfc_t mfc; 593 unsigned int no_funcs, i, no_chains; 594 int ret = -EAGAIN; 595 596 mutex_lock(&s->ops_mutex); 597 if (!(s->resource_setup_done)) { 598 dev_dbg(&s->dev, 599 "no resources available, delaying card_add\n"); 600 mutex_unlock(&s->ops_mutex); 601 return -EAGAIN; /* try again, but later... */ 602 } 603 604 if (pcmcia_validate_mem(s)) { 605 dev_dbg(&s->dev, "validating mem resources failed, " 606 "delaying card_add\n"); 607 mutex_unlock(&s->ops_mutex); 608 return -EAGAIN; /* try again, but later... */ 609 } 610 mutex_unlock(&s->ops_mutex); 611 612 ret = pccard_validate_cis(s, &no_chains); 613 if (ret || !no_chains) { 614 dev_dbg(&s->dev, "invalid CIS or invalid resources\n"); 615 return -ENODEV; 616 } 617 618 if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC, &mfc)) 619 no_funcs = mfc.nfn; 620 else 621 no_funcs = 1; 622 s->functions = no_funcs; 623 624 for (i = 0; i < no_funcs; i++) 625 pcmcia_device_add(s, i); 626 627 return ret; 628 } 629 630 631 static int pcmcia_requery_callback(struct device *dev, void * _data) 632 { 633 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); 634 if (!p_dev->dev.driver) { 635 dev_dbg(dev, "update device information\n"); 636 pcmcia_device_query(p_dev); 637 } 638 639 return 0; 640 } 641 642 643 static void pcmcia_requery(struct pcmcia_socket *s) 644 { 645 int has_pfc; 646 647 if (s->functions == 0) { 648 pcmcia_card_add(s); 649 return; 650 } 651 652 /* some device information might have changed because of a CIS 653 * update or because we can finally read it correctly... so 654 * determine it again, overwriting old values if necessary. */ 655 bus_for_each_dev(&pcmcia_bus_type, NULL, NULL, pcmcia_requery_callback); 656 657 /* if the CIS changed, we need to check whether the number of 658 * functions changed. */ 659 if (s->fake_cis) { 660 int old_funcs, new_funcs; 661 cistpl_longlink_mfc_t mfc; 662 663 /* does this cis override add or remove functions? */ 664 old_funcs = s->functions; 665 666 if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC, 667 &mfc)) 668 new_funcs = mfc.nfn; 669 else 670 new_funcs = 1; 671 if (old_funcs != new_funcs) { 672 /* we need to re-start */ 673 pcmcia_card_remove(s, NULL); 674 s->functions = 0; 675 pcmcia_card_add(s); 676 } 677 } 678 679 /* If the PCMCIA device consists of two pseudo devices, 680 * call pcmcia_device_add() -- which will fail if both 681 * devices are already registered. */ 682 mutex_lock(&s->ops_mutex); 683 has_pfc = s->pcmcia_state.has_pfc; 684 mutex_unlock(&s->ops_mutex); 685 if (has_pfc) 686 pcmcia_device_add(s, 0); 687 688 /* we re-scan all devices, not just the ones connected to this 689 * socket. This does not matter, though. */ 690 if (bus_rescan_devices(&pcmcia_bus_type)) 691 dev_warn(&s->dev, "rescanning the bus failed\n"); 692 } 693 694 695 #ifdef CONFIG_PCMCIA_LOAD_CIS 696 697 /** 698 * pcmcia_load_firmware - load CIS from userspace if device-provided is broken 699 * @dev: the pcmcia device which needs a CIS override 700 * @filename: requested filename in /lib/firmware/ 701 * 702 * This uses the in-kernel firmware loading mechanism to use a "fake CIS" if 703 * the one provided by the card is broken. The firmware files reside in 704 * /lib/firmware/ in userspace. 705 */ 706 static int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename) 707 { 708 struct pcmcia_socket *s = dev->socket; 709 const struct firmware *fw; 710 int ret = -ENOMEM; 711 cistpl_longlink_mfc_t mfc; 712 int old_funcs, new_funcs = 1; 713 714 if (!filename) 715 return -EINVAL; 716 717 dev_dbg(&dev->dev, "trying to load CIS file %s\n", filename); 718 719 if (request_firmware(&fw, filename, &dev->dev) == 0) { 720 if (fw->size >= CISTPL_MAX_CIS_SIZE) { 721 ret = -EINVAL; 722 dev_printk(KERN_ERR, &dev->dev, 723 "pcmcia: CIS override is too big\n"); 724 goto release; 725 } 726 727 if (!pcmcia_replace_cis(s, fw->data, fw->size)) 728 ret = 0; 729 else { 730 dev_printk(KERN_ERR, &dev->dev, 731 "pcmcia: CIS override failed\n"); 732 goto release; 733 } 734 735 /* we need to re-start if the number of functions changed */ 736 old_funcs = s->functions; 737 if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC, 738 &mfc)) 739 new_funcs = mfc.nfn; 740 741 if (old_funcs != new_funcs) 742 ret = -EBUSY; 743 744 /* update information */ 745 pcmcia_device_query(dev); 746 747 /* requery (as number of functions might have changed) */ 748 pcmcia_parse_uevents(s, PCMCIA_UEVENT_REQUERY); 749 } 750 release: 751 release_firmware(fw); 752 753 return ret; 754 } 755 756 #else /* !CONFIG_PCMCIA_LOAD_CIS */ 757 758 static inline int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename) 759 { 760 return -ENODEV; 761 } 762 763 #endif 764 765 766 static inline int pcmcia_devmatch(struct pcmcia_device *dev, 767 struct pcmcia_device_id *did) 768 { 769 if (did->match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID) { 770 if ((!dev->has_manf_id) || (dev->manf_id != did->manf_id)) 771 return 0; 772 } 773 774 if (did->match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID) { 775 if ((!dev->has_card_id) || (dev->card_id != did->card_id)) 776 return 0; 777 } 778 779 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION) { 780 if (dev->func != did->function) 781 return 0; 782 } 783 784 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1) { 785 if (!dev->prod_id[0]) 786 return 0; 787 if (strcmp(did->prod_id[0], dev->prod_id[0])) 788 return 0; 789 } 790 791 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2) { 792 if (!dev->prod_id[1]) 793 return 0; 794 if (strcmp(did->prod_id[1], dev->prod_id[1])) 795 return 0; 796 } 797 798 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3) { 799 if (!dev->prod_id[2]) 800 return 0; 801 if (strcmp(did->prod_id[2], dev->prod_id[2])) 802 return 0; 803 } 804 805 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4) { 806 if (!dev->prod_id[3]) 807 return 0; 808 if (strcmp(did->prod_id[3], dev->prod_id[3])) 809 return 0; 810 } 811 812 if (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) { 813 dev_dbg(&dev->dev, "this is a pseudo-multi-function device\n"); 814 mutex_lock(&dev->socket->ops_mutex); 815 dev->socket->pcmcia_state.has_pfc = 1; 816 mutex_unlock(&dev->socket->ops_mutex); 817 if (dev->device_no != did->device_no) 818 return 0; 819 } 820 821 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID) { 822 int ret; 823 824 if ((!dev->has_func_id) || (dev->func_id != did->func_id)) 825 return 0; 826 827 /* if this is a pseudo-multi-function device, 828 * we need explicit matches */ 829 if (dev->socket->pcmcia_state.has_pfc) 830 return 0; 831 if (dev->device_no) 832 return 0; 833 834 /* also, FUNC_ID matching needs to be activated by userspace 835 * after it has re-checked that there is no possible module 836 * with a prod_id/manf_id/card_id match. 837 */ 838 mutex_lock(&dev->socket->ops_mutex); 839 ret = dev->allow_func_id_match; 840 mutex_unlock(&dev->socket->ops_mutex); 841 842 if (!ret) { 843 dev_dbg(&dev->dev, 844 "skipping FUNC_ID match until userspace ACK\n"); 845 return 0; 846 } 847 } 848 849 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FAKE_CIS) { 850 dev_dbg(&dev->dev, "device needs a fake CIS\n"); 851 if (!dev->socket->fake_cis) 852 if (pcmcia_load_firmware(dev, did->cisfile)) 853 return 0; 854 } 855 856 if (did->match_flags & PCMCIA_DEV_ID_MATCH_ANONYMOUS) { 857 int i; 858 for (i = 0; i < 4; i++) 859 if (dev->prod_id[i]) 860 return 0; 861 if (dev->has_manf_id || dev->has_card_id || dev->has_func_id) 862 return 0; 863 } 864 865 return 1; 866 } 867 868 869 static int pcmcia_bus_match(struct device *dev, struct device_driver *drv) 870 { 871 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); 872 struct pcmcia_driver *p_drv = to_pcmcia_drv(drv); 873 struct pcmcia_device_id *did = p_drv->id_table; 874 struct pcmcia_dynid *dynid; 875 876 /* match dynamic devices first */ 877 mutex_lock(&p_drv->dynids.lock); 878 list_for_each_entry(dynid, &p_drv->dynids.list, node) { 879 dev_dbg(dev, "trying to match to %s\n", drv->name); 880 if (pcmcia_devmatch(p_dev, &dynid->id)) { 881 dev_dbg(dev, "matched to %s\n", drv->name); 882 mutex_unlock(&p_drv->dynids.lock); 883 return 1; 884 } 885 } 886 mutex_unlock(&p_drv->dynids.lock); 887 888 #ifdef CONFIG_PCMCIA_IOCTL 889 /* matching by cardmgr */ 890 if (p_dev->cardmgr == p_drv) { 891 dev_dbg(dev, "cardmgr matched to %s\n", drv->name); 892 return 1; 893 } 894 #endif 895 896 while (did && did->match_flags) { 897 dev_dbg(dev, "trying to match to %s\n", drv->name); 898 if (pcmcia_devmatch(p_dev, did)) { 899 dev_dbg(dev, "matched to %s\n", drv->name); 900 return 1; 901 } 902 did++; 903 } 904 905 return 0; 906 } 907 908 #ifdef CONFIG_HOTPLUG 909 910 static int pcmcia_bus_uevent(struct device *dev, struct kobj_uevent_env *env) 911 { 912 struct pcmcia_device *p_dev; 913 int i; 914 u32 hash[4] = { 0, 0, 0, 0}; 915 916 if (!dev) 917 return -ENODEV; 918 919 p_dev = to_pcmcia_dev(dev); 920 921 /* calculate hashes */ 922 for (i = 0; i < 4; i++) { 923 if (!p_dev->prod_id[i]) 924 continue; 925 hash[i] = crc32(0, p_dev->prod_id[i], strlen(p_dev->prod_id[i])); 926 } 927 928 if (add_uevent_var(env, "SOCKET_NO=%u", p_dev->socket->sock)) 929 return -ENOMEM; 930 931 if (add_uevent_var(env, "DEVICE_NO=%02X", p_dev->device_no)) 932 return -ENOMEM; 933 934 if (add_uevent_var(env, "MODALIAS=pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X" 935 "pa%08Xpb%08Xpc%08Xpd%08X", 936 p_dev->has_manf_id ? p_dev->manf_id : 0, 937 p_dev->has_card_id ? p_dev->card_id : 0, 938 p_dev->has_func_id ? p_dev->func_id : 0, 939 p_dev->func, 940 p_dev->device_no, 941 hash[0], 942 hash[1], 943 hash[2], 944 hash[3])) 945 return -ENOMEM; 946 947 return 0; 948 } 949 950 #else 951 952 static int pcmcia_bus_uevent(struct device *dev, struct kobj_uevent_env *env) 953 { 954 return -ENODEV; 955 } 956 957 #endif 958 959 /************************ runtime PM support ***************************/ 960 961 static int pcmcia_dev_suspend(struct device *dev, pm_message_t state); 962 static int pcmcia_dev_resume(struct device *dev); 963 964 static int runtime_suspend(struct device *dev) 965 { 966 int rc; 967 968 device_lock(dev); 969 rc = pcmcia_dev_suspend(dev, PMSG_SUSPEND); 970 device_unlock(dev); 971 return rc; 972 } 973 974 static int runtime_resume(struct device *dev) 975 { 976 int rc; 977 978 device_lock(dev); 979 rc = pcmcia_dev_resume(dev); 980 device_unlock(dev); 981 return rc; 982 } 983 984 /************************ per-device sysfs output ***************************/ 985 986 #define pcmcia_device_attr(field, test, format) \ 987 static ssize_t field##_show (struct device *dev, struct device_attribute *attr, char *buf) \ 988 { \ 989 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \ 990 return p_dev->test ? sprintf(buf, format, p_dev->field) : -ENODEV; \ 991 } 992 993 #define pcmcia_device_stringattr(name, field) \ 994 static ssize_t name##_show (struct device *dev, struct device_attribute *attr, char *buf) \ 995 { \ 996 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \ 997 return p_dev->field ? sprintf(buf, "%s\n", p_dev->field) : -ENODEV; \ 998 } 999 1000 pcmcia_device_attr(func, socket, "0x%02x\n"); 1001 pcmcia_device_attr(func_id, has_func_id, "0x%02x\n"); 1002 pcmcia_device_attr(manf_id, has_manf_id, "0x%04x\n"); 1003 pcmcia_device_attr(card_id, has_card_id, "0x%04x\n"); 1004 pcmcia_device_stringattr(prod_id1, prod_id[0]); 1005 pcmcia_device_stringattr(prod_id2, prod_id[1]); 1006 pcmcia_device_stringattr(prod_id3, prod_id[2]); 1007 pcmcia_device_stringattr(prod_id4, prod_id[3]); 1008 1009 1010 static ssize_t pcmcia_show_pm_state(struct device *dev, struct device_attribute *attr, char *buf) 1011 { 1012 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); 1013 1014 if (p_dev->suspended) 1015 return sprintf(buf, "off\n"); 1016 else 1017 return sprintf(buf, "on\n"); 1018 } 1019 1020 static ssize_t pcmcia_store_pm_state(struct device *dev, struct device_attribute *attr, 1021 const char *buf, size_t count) 1022 { 1023 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); 1024 int ret = 0; 1025 1026 if (!count) 1027 return -EINVAL; 1028 1029 if ((!p_dev->suspended) && !strncmp(buf, "off", 3)) 1030 ret = runtime_suspend(dev); 1031 else if (p_dev->suspended && !strncmp(buf, "on", 2)) 1032 ret = runtime_resume(dev); 1033 1034 return ret ? ret : count; 1035 } 1036 1037 1038 static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf) 1039 { 1040 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); 1041 int i; 1042 u32 hash[4] = { 0, 0, 0, 0}; 1043 1044 /* calculate hashes */ 1045 for (i = 0; i < 4; i++) { 1046 if (!p_dev->prod_id[i]) 1047 continue; 1048 hash[i] = crc32(0, p_dev->prod_id[i], 1049 strlen(p_dev->prod_id[i])); 1050 } 1051 return sprintf(buf, "pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X" 1052 "pa%08Xpb%08Xpc%08Xpd%08X\n", 1053 p_dev->has_manf_id ? p_dev->manf_id : 0, 1054 p_dev->has_card_id ? p_dev->card_id : 0, 1055 p_dev->has_func_id ? p_dev->func_id : 0, 1056 p_dev->func, p_dev->device_no, 1057 hash[0], hash[1], hash[2], hash[3]); 1058 } 1059 1060 static ssize_t pcmcia_store_allow_func_id_match(struct device *dev, 1061 struct device_attribute *attr, const char *buf, size_t count) 1062 { 1063 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); 1064 1065 if (!count) 1066 return -EINVAL; 1067 1068 mutex_lock(&p_dev->socket->ops_mutex); 1069 p_dev->allow_func_id_match = 1; 1070 mutex_unlock(&p_dev->socket->ops_mutex); 1071 pcmcia_parse_uevents(p_dev->socket, PCMCIA_UEVENT_REQUERY); 1072 1073 return count; 1074 } 1075 1076 static struct device_attribute pcmcia_dev_attrs[] = { 1077 __ATTR(function, 0444, func_show, NULL), 1078 __ATTR(pm_state, 0644, pcmcia_show_pm_state, pcmcia_store_pm_state), 1079 __ATTR_RO(func_id), 1080 __ATTR_RO(manf_id), 1081 __ATTR_RO(card_id), 1082 __ATTR_RO(prod_id1), 1083 __ATTR_RO(prod_id2), 1084 __ATTR_RO(prod_id3), 1085 __ATTR_RO(prod_id4), 1086 __ATTR_RO(modalias), 1087 __ATTR(allow_func_id_match, 0200, NULL, pcmcia_store_allow_func_id_match), 1088 __ATTR_NULL, 1089 }; 1090 1091 /* PM support, also needed for reset */ 1092 1093 static int pcmcia_dev_suspend(struct device *dev, pm_message_t state) 1094 { 1095 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); 1096 struct pcmcia_driver *p_drv = NULL; 1097 int ret = 0; 1098 1099 mutex_lock(&p_dev->socket->ops_mutex); 1100 if (p_dev->suspended) { 1101 mutex_unlock(&p_dev->socket->ops_mutex); 1102 return 0; 1103 } 1104 p_dev->suspended = 1; 1105 mutex_unlock(&p_dev->socket->ops_mutex); 1106 1107 dev_dbg(dev, "suspending\n"); 1108 1109 if (dev->driver) 1110 p_drv = to_pcmcia_drv(dev->driver); 1111 1112 if (!p_drv) 1113 goto out; 1114 1115 if (p_drv->suspend) { 1116 ret = p_drv->suspend(p_dev); 1117 if (ret) { 1118 dev_printk(KERN_ERR, dev, 1119 "pcmcia: device %s (driver %s) did " 1120 "not want to go to sleep (%d)\n", 1121 p_dev->devname, p_drv->drv.name, ret); 1122 mutex_lock(&p_dev->socket->ops_mutex); 1123 p_dev->suspended = 0; 1124 mutex_unlock(&p_dev->socket->ops_mutex); 1125 goto out; 1126 } 1127 } 1128 1129 if (p_dev->device_no == p_dev->func) { 1130 dev_dbg(dev, "releasing configuration\n"); 1131 pcmcia_release_configuration(p_dev); 1132 } 1133 1134 out: 1135 return ret; 1136 } 1137 1138 1139 static int pcmcia_dev_resume(struct device *dev) 1140 { 1141 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); 1142 struct pcmcia_driver *p_drv = NULL; 1143 int ret = 0; 1144 1145 mutex_lock(&p_dev->socket->ops_mutex); 1146 if (!p_dev->suspended) { 1147 mutex_unlock(&p_dev->socket->ops_mutex); 1148 return 0; 1149 } 1150 p_dev->suspended = 0; 1151 mutex_unlock(&p_dev->socket->ops_mutex); 1152 1153 dev_dbg(dev, "resuming\n"); 1154 1155 if (dev->driver) 1156 p_drv = to_pcmcia_drv(dev->driver); 1157 1158 if (!p_drv) 1159 goto out; 1160 1161 if (p_dev->device_no == p_dev->func) { 1162 dev_dbg(dev, "requesting configuration\n"); 1163 ret = pcmcia_request_configuration(p_dev, &p_dev->conf); 1164 if (ret) 1165 goto out; 1166 } 1167 1168 if (p_drv->resume) 1169 ret = p_drv->resume(p_dev); 1170 1171 out: 1172 return ret; 1173 } 1174 1175 1176 static int pcmcia_bus_suspend_callback(struct device *dev, void * _data) 1177 { 1178 struct pcmcia_socket *skt = _data; 1179 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); 1180 1181 if (p_dev->socket != skt || p_dev->suspended) 1182 return 0; 1183 1184 return runtime_suspend(dev); 1185 } 1186 1187 static int pcmcia_bus_resume_callback(struct device *dev, void * _data) 1188 { 1189 struct pcmcia_socket *skt = _data; 1190 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); 1191 1192 if (p_dev->socket != skt || !p_dev->suspended) 1193 return 0; 1194 1195 runtime_resume(dev); 1196 1197 return 0; 1198 } 1199 1200 static int pcmcia_bus_resume(struct pcmcia_socket *skt) 1201 { 1202 dev_dbg(&skt->dev, "resuming socket %d\n", skt->sock); 1203 bus_for_each_dev(&pcmcia_bus_type, NULL, skt, pcmcia_bus_resume_callback); 1204 return 0; 1205 } 1206 1207 static int pcmcia_bus_suspend(struct pcmcia_socket *skt) 1208 { 1209 dev_dbg(&skt->dev, "suspending socket %d\n", skt->sock); 1210 if (bus_for_each_dev(&pcmcia_bus_type, NULL, skt, 1211 pcmcia_bus_suspend_callback)) { 1212 pcmcia_bus_resume(skt); 1213 return -EIO; 1214 } 1215 return 0; 1216 } 1217 1218 1219 /*====================================================================== 1220 1221 The card status event handler. 1222 1223 ======================================================================*/ 1224 1225 /* Normally, the event is passed to individual drivers after 1226 * informing userspace. Only for CS_EVENT_CARD_REMOVAL this 1227 * is inversed to maintain historic compatibility. 1228 */ 1229 1230 static int ds_event(struct pcmcia_socket *skt, event_t event, int priority) 1231 { 1232 struct pcmcia_socket *s = pcmcia_get_socket(skt); 1233 1234 if (!s) { 1235 dev_printk(KERN_ERR, &skt->dev, 1236 "PCMCIA obtaining reference to socket " \ 1237 "failed, event 0x%x lost!\n", event); 1238 return -ENODEV; 1239 } 1240 1241 dev_dbg(&skt->dev, "ds_event(0x%06x, %d, 0x%p)\n", 1242 event, priority, skt); 1243 1244 switch (event) { 1245 case CS_EVENT_CARD_REMOVAL: 1246 atomic_set(&skt->present, 0); 1247 pcmcia_card_remove(skt, NULL); 1248 handle_event(skt, event); 1249 mutex_lock(&s->ops_mutex); 1250 destroy_cis_cache(s); 1251 pcmcia_cleanup_irq(s); 1252 mutex_unlock(&s->ops_mutex); 1253 break; 1254 1255 case CS_EVENT_CARD_INSERTION: 1256 atomic_set(&skt->present, 1); 1257 mutex_lock(&s->ops_mutex); 1258 s->pcmcia_state.has_pfc = 0; 1259 destroy_cis_cache(s); /* to be on the safe side... */ 1260 mutex_unlock(&s->ops_mutex); 1261 pcmcia_card_add(skt); 1262 handle_event(skt, event); 1263 break; 1264 1265 case CS_EVENT_EJECTION_REQUEST: 1266 break; 1267 1268 case CS_EVENT_PM_RESUME: 1269 if (verify_cis_cache(skt) != 0) { 1270 dev_dbg(&skt->dev, "cis mismatch - different card\n"); 1271 /* first, remove the card */ 1272 ds_event(skt, CS_EVENT_CARD_REMOVAL, CS_EVENT_PRI_HIGH); 1273 mutex_lock(&s->ops_mutex); 1274 destroy_cis_cache(skt); 1275 kfree(skt->fake_cis); 1276 skt->fake_cis = NULL; 1277 s->functions = 0; 1278 mutex_unlock(&s->ops_mutex); 1279 /* now, add the new card */ 1280 ds_event(skt, CS_EVENT_CARD_INSERTION, 1281 CS_EVENT_PRI_LOW); 1282 } 1283 handle_event(skt, event); 1284 break; 1285 1286 case CS_EVENT_PM_SUSPEND: 1287 case CS_EVENT_RESET_PHYSICAL: 1288 case CS_EVENT_CARD_RESET: 1289 default: 1290 handle_event(skt, event); 1291 break; 1292 } 1293 1294 pcmcia_put_socket(s); 1295 1296 return 0; 1297 } /* ds_event */ 1298 1299 /* 1300 * NOTE: This is racy. There's no guarantee the card will still be 1301 * physically present, even if the call to this function returns 1302 * non-NULL. Furthermore, the device driver most likely is unbound 1303 * almost immediately, so the timeframe where pcmcia_dev_present 1304 * returns NULL is probably really really small. 1305 */ 1306 struct pcmcia_device *pcmcia_dev_present(struct pcmcia_device *_p_dev) 1307 { 1308 struct pcmcia_device *p_dev; 1309 struct pcmcia_device *ret = NULL; 1310 1311 p_dev = pcmcia_get_dev(_p_dev); 1312 if (!p_dev) 1313 return NULL; 1314 1315 if (atomic_read(&p_dev->socket->present) != 0) 1316 ret = p_dev; 1317 1318 pcmcia_put_dev(p_dev); 1319 return ret; 1320 } 1321 EXPORT_SYMBOL(pcmcia_dev_present); 1322 1323 1324 static struct pcmcia_callback pcmcia_bus_callback = { 1325 .owner = THIS_MODULE, 1326 .event = ds_event, 1327 .requery = pcmcia_requery, 1328 .validate = pccard_validate_cis, 1329 .suspend = pcmcia_bus_suspend, 1330 .resume = pcmcia_bus_resume, 1331 }; 1332 1333 static int __devinit pcmcia_bus_add_socket(struct device *dev, 1334 struct class_interface *class_intf) 1335 { 1336 struct pcmcia_socket *socket = dev_get_drvdata(dev); 1337 int ret; 1338 1339 socket = pcmcia_get_socket(socket); 1340 if (!socket) { 1341 dev_printk(KERN_ERR, dev, 1342 "PCMCIA obtaining reference to socket failed\n"); 1343 return -ENODEV; 1344 } 1345 1346 ret = sysfs_create_bin_file(&dev->kobj, &pccard_cis_attr); 1347 if (ret) { 1348 dev_printk(KERN_ERR, dev, "PCMCIA registration failed\n"); 1349 pcmcia_put_socket(socket); 1350 return ret; 1351 } 1352 1353 #ifdef CONFIG_PCMCIA_IOCTL 1354 init_waitqueue_head(&socket->queue); 1355 #endif 1356 INIT_LIST_HEAD(&socket->devices_list); 1357 memset(&socket->pcmcia_state, 0, sizeof(u8)); 1358 socket->device_count = 0; 1359 1360 ret = pccard_register_pcmcia(socket, &pcmcia_bus_callback); 1361 if (ret) { 1362 dev_printk(KERN_ERR, dev, "PCMCIA registration failed\n"); 1363 pcmcia_put_socket(socket); 1364 return ret; 1365 } 1366 1367 atomic_set(&socket->present, 0); 1368 1369 return 0; 1370 } 1371 1372 static void pcmcia_bus_remove_socket(struct device *dev, 1373 struct class_interface *class_intf) 1374 { 1375 struct pcmcia_socket *socket = dev_get_drvdata(dev); 1376 1377 if (!socket) 1378 return; 1379 1380 pccard_register_pcmcia(socket, NULL); 1381 1382 /* unregister any unbound devices */ 1383 mutex_lock(&socket->skt_mutex); 1384 pcmcia_card_remove(socket, NULL); 1385 release_cis_mem(socket); 1386 mutex_unlock(&socket->skt_mutex); 1387 1388 sysfs_remove_bin_file(&dev->kobj, &pccard_cis_attr); 1389 1390 pcmcia_put_socket(socket); 1391 1392 return; 1393 } 1394 1395 1396 /* the pcmcia_bus_interface is used to handle pcmcia socket devices */ 1397 static struct class_interface pcmcia_bus_interface __refdata = { 1398 .class = &pcmcia_socket_class, 1399 .add_dev = &pcmcia_bus_add_socket, 1400 .remove_dev = &pcmcia_bus_remove_socket, 1401 }; 1402 1403 1404 struct bus_type pcmcia_bus_type = { 1405 .name = "pcmcia", 1406 .uevent = pcmcia_bus_uevent, 1407 .match = pcmcia_bus_match, 1408 .dev_attrs = pcmcia_dev_attrs, 1409 .probe = pcmcia_device_probe, 1410 .remove = pcmcia_device_remove, 1411 .suspend = pcmcia_dev_suspend, 1412 .resume = pcmcia_dev_resume, 1413 }; 1414 1415 1416 static int __init init_pcmcia_bus(void) 1417 { 1418 int ret; 1419 1420 ret = bus_register(&pcmcia_bus_type); 1421 if (ret < 0) { 1422 printk(KERN_WARNING "pcmcia: bus_register error: %d\n", ret); 1423 return ret; 1424 } 1425 ret = class_interface_register(&pcmcia_bus_interface); 1426 if (ret < 0) { 1427 printk(KERN_WARNING 1428 "pcmcia: class_interface_register error: %d\n", ret); 1429 bus_unregister(&pcmcia_bus_type); 1430 return ret; 1431 } 1432 1433 pcmcia_setup_ioctl(); 1434 1435 return 0; 1436 } 1437 fs_initcall(init_pcmcia_bus); /* one level after subsys_initcall so that 1438 * pcmcia_socket_class is already registered */ 1439 1440 1441 static void __exit exit_pcmcia_bus(void) 1442 { 1443 pcmcia_cleanup_ioctl(); 1444 1445 class_interface_unregister(&pcmcia_bus_interface); 1446 1447 bus_unregister(&pcmcia_bus_type); 1448 } 1449 module_exit(exit_pcmcia_bus); 1450 1451 1452 MODULE_ALIAS("ds"); 1453