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 28 #include <pcmcia/cs_types.h> 29 #include <pcmcia/cs.h> 30 #include <pcmcia/cistpl.h> 31 #include <pcmcia/ds.h> 32 #include <pcmcia/ss.h> 33 34 #include "cs_internal.h" 35 36 /*====================================================================*/ 37 38 /* Module parameters */ 39 40 MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>"); 41 MODULE_DESCRIPTION("PCMCIA Driver Services"); 42 MODULE_LICENSE("GPL"); 43 44 #ifdef CONFIG_PCMCIA_DEBUG 45 int ds_pc_debug; 46 47 module_param_named(pc_debug, ds_pc_debug, int, 0644); 48 49 #define ds_dbg(lvl, fmt, arg...) do { \ 50 if (ds_pc_debug > (lvl)) \ 51 printk(KERN_DEBUG "ds: " fmt , ## arg); \ 52 } while (0) 53 #define ds_dev_dbg(lvl, dev, fmt, arg...) do { \ 54 if (ds_pc_debug > (lvl)) \ 55 dev_printk(KERN_DEBUG, dev, "ds: " fmt , ## arg); \ 56 } while (0) 57 #else 58 #define ds_dbg(lvl, fmt, arg...) do { } while (0) 59 #define ds_dev_dbg(lvl, dev, fmt, arg...) do { } while (0) 60 #endif 61 62 spinlock_t pcmcia_dev_list_lock; 63 64 /*====================================================================*/ 65 66 /* code which was in cs.c before */ 67 68 /* String tables for error messages */ 69 70 typedef struct lookup_t { 71 const int key; 72 const char *msg; 73 } lookup_t; 74 75 static const lookup_t error_table[] = { 76 { 0, "Operation succeeded" }, 77 { -EIO, "Input/Output error" }, 78 { -ENODEV, "No card present" }, 79 { -EINVAL, "Bad parameter" }, 80 { -EACCES, "Configuration locked" }, 81 { -EBUSY, "Resource in use" }, 82 { -ENOSPC, "No more items" }, 83 { -ENOMEM, "Out of resource" }, 84 }; 85 86 87 static const lookup_t service_table[] = { 88 { AccessConfigurationRegister, "AccessConfigurationRegister" }, 89 { AddSocketServices, "AddSocketServices" }, 90 { AdjustResourceInfo, "AdjustResourceInfo" }, 91 { CheckEraseQueue, "CheckEraseQueue" }, 92 { CloseMemory, "CloseMemory" }, 93 { DeregisterClient, "DeregisterClient" }, 94 { DeregisterEraseQueue, "DeregisterEraseQueue" }, 95 { GetCardServicesInfo, "GetCardServicesInfo" }, 96 { GetClientInfo, "GetClientInfo" }, 97 { GetConfigurationInfo, "GetConfigurationInfo" }, 98 { GetEventMask, "GetEventMask" }, 99 { GetFirstClient, "GetFirstClient" }, 100 { GetFirstRegion, "GetFirstRegion" }, 101 { GetFirstTuple, "GetFirstTuple" }, 102 { GetNextClient, "GetNextClient" }, 103 { GetNextRegion, "GetNextRegion" }, 104 { GetNextTuple, "GetNextTuple" }, 105 { GetStatus, "GetStatus" }, 106 { GetTupleData, "GetTupleData" }, 107 { MapMemPage, "MapMemPage" }, 108 { ModifyConfiguration, "ModifyConfiguration" }, 109 { ModifyWindow, "ModifyWindow" }, 110 { OpenMemory, "OpenMemory" }, 111 { ParseTuple, "ParseTuple" }, 112 { ReadMemory, "ReadMemory" }, 113 { RegisterClient, "RegisterClient" }, 114 { RegisterEraseQueue, "RegisterEraseQueue" }, 115 { RegisterMTD, "RegisterMTD" }, 116 { ReleaseConfiguration, "ReleaseConfiguration" }, 117 { ReleaseIO, "ReleaseIO" }, 118 { ReleaseIRQ, "ReleaseIRQ" }, 119 { ReleaseWindow, "ReleaseWindow" }, 120 { RequestConfiguration, "RequestConfiguration" }, 121 { RequestIO, "RequestIO" }, 122 { RequestIRQ, "RequestIRQ" }, 123 { RequestSocketMask, "RequestSocketMask" }, 124 { RequestWindow, "RequestWindow" }, 125 { ResetCard, "ResetCard" }, 126 { SetEventMask, "SetEventMask" }, 127 { ValidateCIS, "ValidateCIS" }, 128 { WriteMemory, "WriteMemory" }, 129 { BindDevice, "BindDevice" }, 130 { BindMTD, "BindMTD" }, 131 { ReportError, "ReportError" }, 132 { SuspendCard, "SuspendCard" }, 133 { ResumeCard, "ResumeCard" }, 134 { EjectCard, "EjectCard" }, 135 { InsertCard, "InsertCard" }, 136 { ReplaceCIS, "ReplaceCIS" } 137 }; 138 139 const char *pcmcia_error_func(int func) 140 { 141 int i; 142 143 for (i = 0; i < ARRAY_SIZE(service_table); i++) 144 if (service_table[i].key == func) 145 return service_table[i].msg; 146 147 return "Unknown service number"; 148 } 149 EXPORT_SYMBOL(pcmcia_error_func); 150 151 const char *pcmcia_error_ret(int ret) 152 { 153 int i; 154 155 for (i = 0; i < ARRAY_SIZE(error_table); i++) 156 if (error_table[i].key == ret) 157 return error_table[i].msg; 158 159 return "unknown"; 160 } 161 EXPORT_SYMBOL(pcmcia_error_ret); 162 163 /*======================================================================*/ 164 165 166 167 static void pcmcia_check_driver(struct pcmcia_driver *p_drv) 168 { 169 struct pcmcia_device_id *did = p_drv->id_table; 170 unsigned int i; 171 u32 hash; 172 173 if (!p_drv->probe || !p_drv->remove) 174 printk(KERN_DEBUG "pcmcia: %s lacks a requisite callback " 175 "function\n", p_drv->drv.name); 176 177 while (did && did->match_flags) { 178 for (i=0; i<4; i++) { 179 if (!did->prod_id[i]) 180 continue; 181 182 hash = crc32(0, did->prod_id[i], strlen(did->prod_id[i])); 183 if (hash == did->prod_id_hash[i]) 184 continue; 185 186 printk(KERN_DEBUG "pcmcia: %s: invalid hash for " 187 "product string \"%s\": is 0x%x, should " 188 "be 0x%x\n", p_drv->drv.name, did->prod_id[i], 189 did->prod_id_hash[i], hash); 190 printk(KERN_DEBUG "pcmcia: see " 191 "Documentation/pcmcia/devicetable.txt for " 192 "details\n"); 193 } 194 did++; 195 } 196 197 return; 198 } 199 200 201 /*======================================================================*/ 202 203 204 struct pcmcia_dynid { 205 struct list_head node; 206 struct pcmcia_device_id id; 207 }; 208 209 /** 210 * pcmcia_store_new_id - add a new PCMCIA device ID to this driver and re-probe devices 211 * @driver: target device driver 212 * @buf: buffer for scanning device ID data 213 * @count: input size 214 * 215 * Adds a new dynamic PCMCIA device ID to this driver, 216 * and causes the driver to probe for all devices again. 217 */ 218 static ssize_t 219 pcmcia_store_new_id(struct device_driver *driver, const char *buf, size_t count) 220 { 221 struct pcmcia_dynid *dynid; 222 struct pcmcia_driver *pdrv = to_pcmcia_drv(driver); 223 __u16 match_flags, manf_id, card_id; 224 __u8 func_id, function, device_no; 225 __u32 prod_id_hash[4] = {0, 0, 0, 0}; 226 int fields=0; 227 int retval = 0; 228 229 fields = sscanf(buf, "%hx %hx %hx %hhx %hhx %hhx %x %x %x %x", 230 &match_flags, &manf_id, &card_id, &func_id, &function, &device_no, 231 &prod_id_hash[0], &prod_id_hash[1], &prod_id_hash[2], &prod_id_hash[3]); 232 if (fields < 6) 233 return -EINVAL; 234 235 dynid = kzalloc(sizeof(struct pcmcia_dynid), GFP_KERNEL); 236 if (!dynid) 237 return -ENOMEM; 238 239 dynid->id.match_flags = match_flags; 240 dynid->id.manf_id = manf_id; 241 dynid->id.card_id = card_id; 242 dynid->id.func_id = func_id; 243 dynid->id.function = function; 244 dynid->id.device_no = device_no; 245 memcpy(dynid->id.prod_id_hash, prod_id_hash, sizeof(__u32) * 4); 246 247 spin_lock(&pdrv->dynids.lock); 248 list_add_tail(&dynid->node, &pdrv->dynids.list); 249 spin_unlock(&pdrv->dynids.lock); 250 251 if (get_driver(&pdrv->drv)) { 252 retval = driver_attach(&pdrv->drv); 253 put_driver(&pdrv->drv); 254 } 255 256 if (retval) 257 return retval; 258 return count; 259 } 260 static DRIVER_ATTR(new_id, S_IWUSR, NULL, pcmcia_store_new_id); 261 262 static void 263 pcmcia_free_dynids(struct pcmcia_driver *drv) 264 { 265 struct pcmcia_dynid *dynid, *n; 266 267 spin_lock(&drv->dynids.lock); 268 list_for_each_entry_safe(dynid, n, &drv->dynids.list, node) { 269 list_del(&dynid->node); 270 kfree(dynid); 271 } 272 spin_unlock(&drv->dynids.lock); 273 } 274 275 static int 276 pcmcia_create_newid_file(struct pcmcia_driver *drv) 277 { 278 int error = 0; 279 if (drv->probe != NULL) 280 error = driver_create_file(&drv->drv, &driver_attr_new_id); 281 return error; 282 } 283 284 285 /** 286 * pcmcia_register_driver - register a PCMCIA driver with the bus core 287 * @driver: the &driver being registered 288 * 289 * Registers a PCMCIA driver with the PCMCIA bus core. 290 */ 291 int pcmcia_register_driver(struct pcmcia_driver *driver) 292 { 293 int error; 294 295 if (!driver) 296 return -EINVAL; 297 298 pcmcia_check_driver(driver); 299 300 /* initialize common fields */ 301 driver->drv.bus = &pcmcia_bus_type; 302 driver->drv.owner = driver->owner; 303 spin_lock_init(&driver->dynids.lock); 304 INIT_LIST_HEAD(&driver->dynids.list); 305 306 ds_dbg(3, "registering driver %s\n", driver->drv.name); 307 308 error = driver_register(&driver->drv); 309 if (error < 0) 310 return error; 311 312 error = pcmcia_create_newid_file(driver); 313 if (error) 314 driver_unregister(&driver->drv); 315 316 return error; 317 } 318 EXPORT_SYMBOL(pcmcia_register_driver); 319 320 /** 321 * pcmcia_unregister_driver - unregister a PCMCIA driver with the bus core 322 * @driver: the &driver being unregistered 323 */ 324 void pcmcia_unregister_driver(struct pcmcia_driver *driver) 325 { 326 ds_dbg(3, "unregistering driver %s\n", driver->drv.name); 327 driver_unregister(&driver->drv); 328 pcmcia_free_dynids(driver); 329 } 330 EXPORT_SYMBOL(pcmcia_unregister_driver); 331 332 333 /* pcmcia_device handling */ 334 335 struct pcmcia_device * pcmcia_get_dev(struct pcmcia_device *p_dev) 336 { 337 struct device *tmp_dev; 338 tmp_dev = get_device(&p_dev->dev); 339 if (!tmp_dev) 340 return NULL; 341 return to_pcmcia_dev(tmp_dev); 342 } 343 344 void pcmcia_put_dev(struct pcmcia_device *p_dev) 345 { 346 if (p_dev) 347 put_device(&p_dev->dev); 348 } 349 350 static void pcmcia_release_function(struct kref *ref) 351 { 352 struct config_t *c = container_of(ref, struct config_t, ref); 353 ds_dbg(1, "releasing config_t\n"); 354 kfree(c); 355 } 356 357 static void pcmcia_release_dev(struct device *dev) 358 { 359 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); 360 ds_dev_dbg(1, dev, "releasing device\n"); 361 pcmcia_put_socket(p_dev->socket); 362 kfree(p_dev->devname); 363 kref_put(&p_dev->function_config->ref, pcmcia_release_function); 364 kfree(p_dev); 365 } 366 367 static void pcmcia_add_device_later(struct pcmcia_socket *s, int mfc) 368 { 369 if (!s->pcmcia_state.device_add_pending) { 370 ds_dev_dbg(1, &s->dev, "scheduling to add %s secondary" 371 " device to %d\n", mfc ? "mfc" : "pfc", s->sock); 372 s->pcmcia_state.device_add_pending = 1; 373 s->pcmcia_state.mfc_pfc = mfc; 374 schedule_work(&s->device_add); 375 } 376 return; 377 } 378 379 static int pcmcia_device_probe(struct device * dev) 380 { 381 struct pcmcia_device *p_dev; 382 struct pcmcia_driver *p_drv; 383 struct pcmcia_device_id *did; 384 struct pcmcia_socket *s; 385 cistpl_config_t cis_config; 386 int ret = 0; 387 388 dev = get_device(dev); 389 if (!dev) 390 return -ENODEV; 391 392 p_dev = to_pcmcia_dev(dev); 393 p_drv = to_pcmcia_drv(dev->driver); 394 s = p_dev->socket; 395 396 /* The PCMCIA code passes the match data in via dev_set_drvdata(dev) 397 * which is an ugly hack. Once the driver probe is called it may 398 * and often will overwrite the match data so we must save it first 399 * 400 * handle pseudo multifunction devices: 401 * there are at most two pseudo multifunction devices. 402 * if we're matching against the first, schedule a 403 * call which will then check whether there are two 404 * pseudo devices, and if not, add the second one. 405 */ 406 did = dev_get_drvdata(&p_dev->dev); 407 408 ds_dev_dbg(1, dev, "trying to bind to %s\n", p_drv->drv.name); 409 410 if ((!p_drv->probe) || (!p_dev->function_config) || 411 (!try_module_get(p_drv->owner))) { 412 ret = -EINVAL; 413 goto put_dev; 414 } 415 416 /* set up some more device information */ 417 ret = pccard_read_tuple(p_dev->socket, p_dev->func, CISTPL_CONFIG, 418 &cis_config); 419 if (!ret) { 420 p_dev->conf.ConfigBase = cis_config.base; 421 p_dev->conf.Present = cis_config.rmask[0]; 422 } else { 423 dev_printk(KERN_INFO, dev, 424 "pcmcia: could not parse base and rmask0 of CIS\n"); 425 p_dev->conf.ConfigBase = 0; 426 p_dev->conf.Present = 0; 427 } 428 429 ret = p_drv->probe(p_dev); 430 if (ret) { 431 ds_dev_dbg(1, dev, "binding to %s failed with %d\n", 432 p_drv->drv.name, ret); 433 goto put_module; 434 } 435 436 if (did && (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) && 437 (p_dev->socket->device_count == 1) && (p_dev->device_no == 0)) 438 pcmcia_add_device_later(p_dev->socket, 0); 439 440 put_module: 441 if (ret) 442 module_put(p_drv->owner); 443 put_dev: 444 if (ret) 445 put_device(dev); 446 return (ret); 447 } 448 449 450 /* 451 * Removes a PCMCIA card from the device tree and socket list. 452 */ 453 static void pcmcia_card_remove(struct pcmcia_socket *s, struct pcmcia_device *leftover) 454 { 455 struct pcmcia_device *p_dev; 456 struct pcmcia_device *tmp; 457 unsigned long flags; 458 459 ds_dev_dbg(2, leftover ? &leftover->dev : &s->dev, 460 "pcmcia_card_remove(%d) %s\n", s->sock, 461 leftover ? leftover->devname : ""); 462 463 if (!leftover) 464 s->device_count = 0; 465 else 466 s->device_count = 1; 467 468 /* unregister all pcmcia_devices registered with this socket, except leftover */ 469 list_for_each_entry_safe(p_dev, tmp, &s->devices_list, socket_device_list) { 470 if (p_dev == leftover) 471 continue; 472 473 spin_lock_irqsave(&pcmcia_dev_list_lock, flags); 474 list_del(&p_dev->socket_device_list); 475 p_dev->_removed=1; 476 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); 477 478 ds_dev_dbg(2, &p_dev->dev, "unregistering device\n"); 479 device_unregister(&p_dev->dev); 480 } 481 482 return; 483 } 484 485 static int pcmcia_device_remove(struct device * dev) 486 { 487 struct pcmcia_device *p_dev; 488 struct pcmcia_driver *p_drv; 489 struct pcmcia_device_id *did; 490 int i; 491 492 p_dev = to_pcmcia_dev(dev); 493 p_drv = to_pcmcia_drv(dev->driver); 494 495 ds_dev_dbg(1, dev, "removing device\n"); 496 497 /* If we're removing the primary module driving a 498 * pseudo multi-function card, we need to unbind 499 * all devices 500 */ 501 did = dev_get_drvdata(&p_dev->dev); 502 if (did && (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) && 503 (p_dev->socket->device_count != 0) && 504 (p_dev->device_no == 0)) 505 pcmcia_card_remove(p_dev->socket, p_dev); 506 507 /* detach the "instance" */ 508 if (!p_drv) 509 return 0; 510 511 if (p_drv->remove) 512 p_drv->remove(p_dev); 513 514 p_dev->dev_node = NULL; 515 516 /* check for proper unloading */ 517 if (p_dev->_irq || p_dev->_io || p_dev->_locked) 518 dev_printk(KERN_INFO, dev, 519 "pcmcia: driver %s did not release config properly\n", 520 p_drv->drv.name); 521 522 for (i = 0; i < MAX_WIN; i++) 523 if (p_dev->_win & CLIENT_WIN_REQ(i)) 524 dev_printk(KERN_INFO, dev, 525 "pcmcia: driver %s did not release window properly\n", 526 p_drv->drv.name); 527 528 /* references from pcmcia_probe_device */ 529 pcmcia_put_dev(p_dev); 530 module_put(p_drv->owner); 531 532 return 0; 533 } 534 535 536 /* 537 * pcmcia_device_query -- determine information about a pcmcia device 538 */ 539 static int pcmcia_device_query(struct pcmcia_device *p_dev) 540 { 541 cistpl_manfid_t manf_id; 542 cistpl_funcid_t func_id; 543 cistpl_vers_1_t *vers1; 544 unsigned int i; 545 546 vers1 = kmalloc(sizeof(*vers1), GFP_KERNEL); 547 if (!vers1) 548 return -ENOMEM; 549 550 if (!pccard_read_tuple(p_dev->socket, BIND_FN_ALL, 551 CISTPL_MANFID, &manf_id)) { 552 p_dev->manf_id = manf_id.manf; 553 p_dev->card_id = manf_id.card; 554 p_dev->has_manf_id = 1; 555 p_dev->has_card_id = 1; 556 } 557 558 if (!pccard_read_tuple(p_dev->socket, p_dev->func, 559 CISTPL_FUNCID, &func_id)) { 560 p_dev->func_id = func_id.func; 561 p_dev->has_func_id = 1; 562 } else { 563 /* rule of thumb: cards with no FUNCID, but with 564 * common memory device geometry information, are 565 * probably memory cards (from pcmcia-cs) */ 566 cistpl_device_geo_t *devgeo; 567 568 devgeo = kmalloc(sizeof(*devgeo), GFP_KERNEL); 569 if (!devgeo) { 570 kfree(vers1); 571 return -ENOMEM; 572 } 573 if (!pccard_read_tuple(p_dev->socket, p_dev->func, 574 CISTPL_DEVICE_GEO, devgeo)) { 575 ds_dev_dbg(0, &p_dev->dev, 576 "mem device geometry probably means " 577 "FUNCID_MEMORY\n"); 578 p_dev->func_id = CISTPL_FUNCID_MEMORY; 579 p_dev->has_func_id = 1; 580 } 581 kfree(devgeo); 582 } 583 584 if (!pccard_read_tuple(p_dev->socket, BIND_FN_ALL, CISTPL_VERS_1, 585 vers1)) { 586 for (i = 0; i < min_t(unsigned int, 4, vers1->ns); i++) { 587 char *tmp; 588 unsigned int length; 589 590 tmp = vers1->str + vers1->ofs[i]; 591 592 length = strlen(tmp) + 1; 593 if ((length < 2) || (length > 255)) 594 continue; 595 596 p_dev->prod_id[i] = kmalloc(sizeof(char) * length, 597 GFP_KERNEL); 598 if (!p_dev->prod_id[i]) 599 continue; 600 601 p_dev->prod_id[i] = strncpy(p_dev->prod_id[i], 602 tmp, length); 603 } 604 } 605 606 kfree(vers1); 607 return 0; 608 } 609 610 611 /* device_add_lock is needed to avoid double registration by cardmgr and kernel. 612 * Serializes pcmcia_device_add; will most likely be removed in future. 613 * 614 * While it has the caveat that adding new PCMCIA devices inside(!) device_register() 615 * won't work, this doesn't matter much at the moment: the driver core doesn't 616 * support it either. 617 */ 618 static DEFINE_MUTEX(device_add_lock); 619 620 struct pcmcia_device * pcmcia_device_add(struct pcmcia_socket *s, unsigned int function) 621 { 622 struct pcmcia_device *p_dev, *tmp_dev; 623 unsigned long flags; 624 625 s = pcmcia_get_socket(s); 626 if (!s) 627 return NULL; 628 629 mutex_lock(&device_add_lock); 630 631 ds_dbg(3, "adding device to %d, function %d\n", s->sock, function); 632 633 /* max of 4 devices per card */ 634 if (s->device_count == 4) 635 goto err_put; 636 637 p_dev = kzalloc(sizeof(struct pcmcia_device), GFP_KERNEL); 638 if (!p_dev) 639 goto err_put; 640 641 p_dev->socket = s; 642 p_dev->device_no = (s->device_count++); 643 p_dev->func = function; 644 645 p_dev->dev.bus = &pcmcia_bus_type; 646 p_dev->dev.parent = s->dev.parent; 647 p_dev->dev.release = pcmcia_release_dev; 648 /* by default don't allow DMA */ 649 p_dev->dma_mask = DMA_MASK_NONE; 650 p_dev->dev.dma_mask = &p_dev->dma_mask; 651 dev_set_name(&p_dev->dev, "%d.%d", p_dev->socket->sock, p_dev->device_no); 652 if (!dev_name(&p_dev->dev)) 653 goto err_free; 654 p_dev->devname = kasprintf(GFP_KERNEL, "pcmcia%s", dev_name(&p_dev->dev)); 655 if (!p_dev->devname) 656 goto err_free; 657 ds_dev_dbg(3, &p_dev->dev, "devname is %s\n", p_dev->devname); 658 659 spin_lock_irqsave(&pcmcia_dev_list_lock, flags); 660 661 /* 662 * p_dev->function_config must be the same for all card functions. 663 * Note that this is serialized by the device_add_lock, so that 664 * only one such struct will be created. 665 */ 666 list_for_each_entry(tmp_dev, &s->devices_list, socket_device_list) 667 if (p_dev->func == tmp_dev->func) { 668 p_dev->function_config = tmp_dev->function_config; 669 p_dev->io = tmp_dev->io; 670 p_dev->irq = tmp_dev->irq; 671 kref_get(&p_dev->function_config->ref); 672 } 673 674 /* Add to the list in pcmcia_bus_socket */ 675 list_add(&p_dev->socket_device_list, &s->devices_list); 676 677 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); 678 679 if (!p_dev->function_config) { 680 ds_dev_dbg(3, &p_dev->dev, "creating config_t\n"); 681 p_dev->function_config = kzalloc(sizeof(struct config_t), 682 GFP_KERNEL); 683 if (!p_dev->function_config) 684 goto err_unreg; 685 kref_init(&p_dev->function_config->ref); 686 } 687 688 dev_printk(KERN_NOTICE, &p_dev->dev, 689 "pcmcia: registering new device %s\n", 690 p_dev->devname); 691 692 pcmcia_device_query(p_dev); 693 694 if (device_register(&p_dev->dev)) 695 goto err_unreg; 696 697 mutex_unlock(&device_add_lock); 698 699 return p_dev; 700 701 err_unreg: 702 spin_lock_irqsave(&pcmcia_dev_list_lock, flags); 703 list_del(&p_dev->socket_device_list); 704 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); 705 706 err_free: 707 kfree(p_dev->devname); 708 kfree(p_dev); 709 s->device_count--; 710 err_put: 711 mutex_unlock(&device_add_lock); 712 pcmcia_put_socket(s); 713 714 return NULL; 715 } 716 717 718 static int pcmcia_card_add(struct pcmcia_socket *s) 719 { 720 cistpl_longlink_mfc_t mfc; 721 unsigned int no_funcs, i, no_chains; 722 int ret = 0; 723 724 if (!(s->resource_setup_done)) { 725 ds_dev_dbg(3, &s->dev, 726 "no resources available, delaying card_add\n"); 727 return -EAGAIN; /* try again, but later... */ 728 } 729 730 if (pcmcia_validate_mem(s)) { 731 ds_dev_dbg(3, &s->dev, "validating mem resources failed, " 732 "delaying card_add\n"); 733 return -EAGAIN; /* try again, but later... */ 734 } 735 736 ret = pccard_validate_cis(s, &no_chains); 737 if (ret || !no_chains) { 738 ds_dev_dbg(0, &s->dev, "invalid CIS or invalid resources\n"); 739 return -ENODEV; 740 } 741 742 if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC, &mfc)) 743 no_funcs = mfc.nfn; 744 else 745 no_funcs = 1; 746 s->functions = no_funcs; 747 748 for (i=0; i < no_funcs; i++) 749 pcmcia_device_add(s, i); 750 751 return (ret); 752 } 753 754 755 static void pcmcia_delayed_add_device(struct work_struct *work) 756 { 757 struct pcmcia_socket *s = 758 container_of(work, struct pcmcia_socket, device_add); 759 ds_dev_dbg(1, &s->dev, "adding additional device to %d\n", s->sock); 760 pcmcia_device_add(s, s->pcmcia_state.mfc_pfc); 761 s->pcmcia_state.device_add_pending = 0; 762 s->pcmcia_state.mfc_pfc = 0; 763 } 764 765 static int pcmcia_requery(struct device *dev, void * _data) 766 { 767 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); 768 if (!p_dev->dev.driver) { 769 ds_dev_dbg(1, dev, "update device information\n"); 770 pcmcia_device_query(p_dev); 771 } 772 773 return 0; 774 } 775 776 static void pcmcia_bus_rescan(struct pcmcia_socket *skt, int new_cis) 777 { 778 int no_devices = 0; 779 int ret = 0; 780 unsigned long flags; 781 782 /* must be called with skt_mutex held */ 783 ds_dev_dbg(0, &skt->dev, "re-scanning socket %d\n", skt->sock); 784 785 spin_lock_irqsave(&pcmcia_dev_list_lock, flags); 786 if (list_empty(&skt->devices_list)) 787 no_devices = 1; 788 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); 789 790 /* If this is because of a CIS override, start over */ 791 if (new_cis && !no_devices) 792 pcmcia_card_remove(skt, NULL); 793 794 /* if no devices were added for this socket yet because of 795 * missing resource information or other trouble, we need to 796 * do this now. */ 797 if (no_devices || new_cis) { 798 ret = pcmcia_card_add(skt); 799 if (ret) 800 return; 801 } 802 803 /* some device information might have changed because of a CIS 804 * update or because we can finally read it correctly... so 805 * determine it again, overwriting old values if necessary. */ 806 bus_for_each_dev(&pcmcia_bus_type, NULL, NULL, pcmcia_requery); 807 808 /* we re-scan all devices, not just the ones connected to this 809 * socket. This does not matter, though. */ 810 ret = bus_rescan_devices(&pcmcia_bus_type); 811 if (ret) 812 printk(KERN_INFO "pcmcia: bus_rescan_devices failed\n"); 813 } 814 815 #ifdef CONFIG_PCMCIA_LOAD_CIS 816 817 /** 818 * pcmcia_load_firmware - load CIS from userspace if device-provided is broken 819 * @dev: the pcmcia device which needs a CIS override 820 * @filename: requested filename in /lib/firmware/ 821 * 822 * This uses the in-kernel firmware loading mechanism to use a "fake CIS" if 823 * the one provided by the card is broken. The firmware files reside in 824 * /lib/firmware/ in userspace. 825 */ 826 static int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename) 827 { 828 struct pcmcia_socket *s = dev->socket; 829 const struct firmware *fw; 830 int ret = -ENOMEM; 831 int no_funcs; 832 int old_funcs; 833 cistpl_longlink_mfc_t mfc; 834 835 if (!filename) 836 return -EINVAL; 837 838 ds_dev_dbg(1, &dev->dev, "trying to load CIS file %s\n", filename); 839 840 if (request_firmware(&fw, filename, &dev->dev) == 0) { 841 if (fw->size >= CISTPL_MAX_CIS_SIZE) { 842 ret = -EINVAL; 843 dev_printk(KERN_ERR, &dev->dev, 844 "pcmcia: CIS override is too big\n"); 845 goto release; 846 } 847 848 if (!pcmcia_replace_cis(s, fw->data, fw->size)) 849 ret = 0; 850 else { 851 dev_printk(KERN_ERR, &dev->dev, 852 "pcmcia: CIS override failed\n"); 853 goto release; 854 } 855 856 857 /* update information */ 858 pcmcia_device_query(dev); 859 860 /* does this cis override add or remove functions? */ 861 old_funcs = s->functions; 862 863 if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC, &mfc)) 864 no_funcs = mfc.nfn; 865 else 866 no_funcs = 1; 867 s->functions = no_funcs; 868 869 if (old_funcs > no_funcs) 870 pcmcia_card_remove(s, dev); 871 else if (no_funcs > old_funcs) 872 pcmcia_add_device_later(s, 1); 873 } 874 release: 875 release_firmware(fw); 876 877 return (ret); 878 } 879 880 #else /* !CONFIG_PCMCIA_LOAD_CIS */ 881 882 static inline int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename) 883 { 884 return -ENODEV; 885 } 886 887 #endif 888 889 890 static inline int pcmcia_devmatch(struct pcmcia_device *dev, 891 struct pcmcia_device_id *did) 892 { 893 if (did->match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID) { 894 if ((!dev->has_manf_id) || (dev->manf_id != did->manf_id)) 895 return 0; 896 } 897 898 if (did->match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID) { 899 if ((!dev->has_card_id) || (dev->card_id != did->card_id)) 900 return 0; 901 } 902 903 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION) { 904 if (dev->func != did->function) 905 return 0; 906 } 907 908 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1) { 909 if (!dev->prod_id[0]) 910 return 0; 911 if (strcmp(did->prod_id[0], dev->prod_id[0])) 912 return 0; 913 } 914 915 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2) { 916 if (!dev->prod_id[1]) 917 return 0; 918 if (strcmp(did->prod_id[1], dev->prod_id[1])) 919 return 0; 920 } 921 922 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3) { 923 if (!dev->prod_id[2]) 924 return 0; 925 if (strcmp(did->prod_id[2], dev->prod_id[2])) 926 return 0; 927 } 928 929 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4) { 930 if (!dev->prod_id[3]) 931 return 0; 932 if (strcmp(did->prod_id[3], dev->prod_id[3])) 933 return 0; 934 } 935 936 if (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) { 937 if (dev->device_no != did->device_no) 938 return 0; 939 } 940 941 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID) { 942 if ((!dev->has_func_id) || (dev->func_id != did->func_id)) 943 return 0; 944 945 /* if this is a pseudo-multi-function device, 946 * we need explicit matches */ 947 if (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) 948 return 0; 949 if (dev->device_no) 950 return 0; 951 952 /* also, FUNC_ID matching needs to be activated by userspace 953 * after it has re-checked that there is no possible module 954 * with a prod_id/manf_id/card_id match. 955 */ 956 ds_dev_dbg(0, &dev->dev, 957 "skipping FUNC_ID match until userspace interaction\n"); 958 if (!dev->allow_func_id_match) 959 return 0; 960 } 961 962 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FAKE_CIS) { 963 ds_dev_dbg(0, &dev->dev, "device needs a fake CIS\n"); 964 if (!dev->socket->fake_cis) 965 pcmcia_load_firmware(dev, did->cisfile); 966 967 if (!dev->socket->fake_cis) 968 return 0; 969 } 970 971 if (did->match_flags & PCMCIA_DEV_ID_MATCH_ANONYMOUS) { 972 int i; 973 for (i=0; i<4; i++) 974 if (dev->prod_id[i]) 975 return 0; 976 if (dev->has_manf_id || dev->has_card_id || dev->has_func_id) 977 return 0; 978 } 979 980 dev_set_drvdata(&dev->dev, did); 981 982 return 1; 983 } 984 985 986 static int pcmcia_bus_match(struct device * dev, struct device_driver * drv) { 987 struct pcmcia_device * p_dev = to_pcmcia_dev(dev); 988 struct pcmcia_driver * p_drv = to_pcmcia_drv(drv); 989 struct pcmcia_device_id *did = p_drv->id_table; 990 struct pcmcia_dynid *dynid; 991 992 /* match dynamic devices first */ 993 spin_lock(&p_drv->dynids.lock); 994 list_for_each_entry(dynid, &p_drv->dynids.list, node) { 995 ds_dev_dbg(3, dev, "trying to match to %s\n", drv->name); 996 if (pcmcia_devmatch(p_dev, &dynid->id)) { 997 ds_dev_dbg(0, dev, "matched to %s\n", drv->name); 998 spin_unlock(&p_drv->dynids.lock); 999 return 1; 1000 } 1001 } 1002 spin_unlock(&p_drv->dynids.lock); 1003 1004 #ifdef CONFIG_PCMCIA_IOCTL 1005 /* matching by cardmgr */ 1006 if (p_dev->cardmgr == p_drv) { 1007 ds_dev_dbg(0, dev, "cardmgr matched to %s\n", drv->name); 1008 return 1; 1009 } 1010 #endif 1011 1012 while (did && did->match_flags) { 1013 ds_dev_dbg(3, dev, "trying to match to %s\n", drv->name); 1014 if (pcmcia_devmatch(p_dev, did)) { 1015 ds_dev_dbg(0, dev, "matched to %s\n", drv->name); 1016 return 1; 1017 } 1018 did++; 1019 } 1020 1021 return 0; 1022 } 1023 1024 #ifdef CONFIG_HOTPLUG 1025 1026 static int pcmcia_bus_uevent(struct device *dev, struct kobj_uevent_env *env) 1027 { 1028 struct pcmcia_device *p_dev; 1029 int i; 1030 u32 hash[4] = { 0, 0, 0, 0}; 1031 1032 if (!dev) 1033 return -ENODEV; 1034 1035 p_dev = to_pcmcia_dev(dev); 1036 1037 /* calculate hashes */ 1038 for (i=0; i<4; i++) { 1039 if (!p_dev->prod_id[i]) 1040 continue; 1041 hash[i] = crc32(0, p_dev->prod_id[i], strlen(p_dev->prod_id[i])); 1042 } 1043 1044 if (add_uevent_var(env, "SOCKET_NO=%u", p_dev->socket->sock)) 1045 return -ENOMEM; 1046 1047 if (add_uevent_var(env, "DEVICE_NO=%02X", p_dev->device_no)) 1048 return -ENOMEM; 1049 1050 if (add_uevent_var(env, "MODALIAS=pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X" 1051 "pa%08Xpb%08Xpc%08Xpd%08X", 1052 p_dev->has_manf_id ? p_dev->manf_id : 0, 1053 p_dev->has_card_id ? p_dev->card_id : 0, 1054 p_dev->has_func_id ? p_dev->func_id : 0, 1055 p_dev->func, 1056 p_dev->device_no, 1057 hash[0], 1058 hash[1], 1059 hash[2], 1060 hash[3])) 1061 return -ENOMEM; 1062 1063 return 0; 1064 } 1065 1066 #else 1067 1068 static int pcmcia_bus_uevent(struct device *dev, struct kobj_uevent_env *env) 1069 { 1070 return -ENODEV; 1071 } 1072 1073 #endif 1074 1075 /************************ runtime PM support ***************************/ 1076 1077 static int pcmcia_dev_suspend(struct device *dev, pm_message_t state); 1078 static int pcmcia_dev_resume(struct device *dev); 1079 1080 static int runtime_suspend(struct device *dev) 1081 { 1082 int rc; 1083 1084 down(&dev->sem); 1085 rc = pcmcia_dev_suspend(dev, PMSG_SUSPEND); 1086 up(&dev->sem); 1087 return rc; 1088 } 1089 1090 static void runtime_resume(struct device *dev) 1091 { 1092 int rc; 1093 1094 down(&dev->sem); 1095 rc = pcmcia_dev_resume(dev); 1096 up(&dev->sem); 1097 } 1098 1099 /************************ per-device sysfs output ***************************/ 1100 1101 #define pcmcia_device_attr(field, test, format) \ 1102 static ssize_t field##_show (struct device *dev, struct device_attribute *attr, char *buf) \ 1103 { \ 1104 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \ 1105 return p_dev->test ? sprintf (buf, format, p_dev->field) : -ENODEV; \ 1106 } 1107 1108 #define pcmcia_device_stringattr(name, field) \ 1109 static ssize_t name##_show (struct device *dev, struct device_attribute *attr, char *buf) \ 1110 { \ 1111 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \ 1112 return p_dev->field ? sprintf (buf, "%s\n", p_dev->field) : -ENODEV; \ 1113 } 1114 1115 pcmcia_device_attr(func, socket, "0x%02x\n"); 1116 pcmcia_device_attr(func_id, has_func_id, "0x%02x\n"); 1117 pcmcia_device_attr(manf_id, has_manf_id, "0x%04x\n"); 1118 pcmcia_device_attr(card_id, has_card_id, "0x%04x\n"); 1119 pcmcia_device_stringattr(prod_id1, prod_id[0]); 1120 pcmcia_device_stringattr(prod_id2, prod_id[1]); 1121 pcmcia_device_stringattr(prod_id3, prod_id[2]); 1122 pcmcia_device_stringattr(prod_id4, prod_id[3]); 1123 1124 1125 static ssize_t pcmcia_show_pm_state(struct device *dev, struct device_attribute *attr, char *buf) 1126 { 1127 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); 1128 1129 if (p_dev->suspended) 1130 return sprintf(buf, "off\n"); 1131 else 1132 return sprintf(buf, "on\n"); 1133 } 1134 1135 static ssize_t pcmcia_store_pm_state(struct device *dev, struct device_attribute *attr, 1136 const char *buf, size_t count) 1137 { 1138 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); 1139 int ret = 0; 1140 1141 if (!count) 1142 return -EINVAL; 1143 1144 if ((!p_dev->suspended) && !strncmp(buf, "off", 3)) 1145 ret = runtime_suspend(dev); 1146 else if (p_dev->suspended && !strncmp(buf, "on", 2)) 1147 runtime_resume(dev); 1148 1149 return ret ? ret : count; 1150 } 1151 1152 1153 static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf) 1154 { 1155 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); 1156 int i; 1157 u32 hash[4] = { 0, 0, 0, 0}; 1158 1159 /* calculate hashes */ 1160 for (i=0; i<4; i++) { 1161 if (!p_dev->prod_id[i]) 1162 continue; 1163 hash[i] = crc32(0,p_dev->prod_id[i],strlen(p_dev->prod_id[i])); 1164 } 1165 return sprintf(buf, "pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X" 1166 "pa%08Xpb%08Xpc%08Xpd%08X\n", 1167 p_dev->has_manf_id ? p_dev->manf_id : 0, 1168 p_dev->has_card_id ? p_dev->card_id : 0, 1169 p_dev->has_func_id ? p_dev->func_id : 0, 1170 p_dev->func, p_dev->device_no, 1171 hash[0], hash[1], hash[2], hash[3]); 1172 } 1173 1174 static ssize_t pcmcia_store_allow_func_id_match(struct device *dev, 1175 struct device_attribute *attr, const char *buf, size_t count) 1176 { 1177 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); 1178 int ret; 1179 1180 if (!count) 1181 return -EINVAL; 1182 1183 mutex_lock(&p_dev->socket->skt_mutex); 1184 p_dev->allow_func_id_match = 1; 1185 mutex_unlock(&p_dev->socket->skt_mutex); 1186 1187 ret = bus_rescan_devices(&pcmcia_bus_type); 1188 if (ret) 1189 printk(KERN_INFO "pcmcia: bus_rescan_devices failed after " 1190 "allowing func_id matches\n"); 1191 1192 return count; 1193 } 1194 1195 static struct device_attribute pcmcia_dev_attrs[] = { 1196 __ATTR(function, 0444, func_show, NULL), 1197 __ATTR(pm_state, 0644, pcmcia_show_pm_state, pcmcia_store_pm_state), 1198 __ATTR_RO(func_id), 1199 __ATTR_RO(manf_id), 1200 __ATTR_RO(card_id), 1201 __ATTR_RO(prod_id1), 1202 __ATTR_RO(prod_id2), 1203 __ATTR_RO(prod_id3), 1204 __ATTR_RO(prod_id4), 1205 __ATTR_RO(modalias), 1206 __ATTR(allow_func_id_match, 0200, NULL, pcmcia_store_allow_func_id_match), 1207 __ATTR_NULL, 1208 }; 1209 1210 /* PM support, also needed for reset */ 1211 1212 static int pcmcia_dev_suspend(struct device * dev, pm_message_t state) 1213 { 1214 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); 1215 struct pcmcia_driver *p_drv = NULL; 1216 int ret = 0; 1217 1218 if (p_dev->suspended) 1219 return 0; 1220 1221 ds_dev_dbg(2, dev, "suspending\n"); 1222 1223 if (dev->driver) 1224 p_drv = to_pcmcia_drv(dev->driver); 1225 1226 if (!p_drv) 1227 goto out; 1228 1229 if (p_drv->suspend) { 1230 ret = p_drv->suspend(p_dev); 1231 if (ret) { 1232 dev_printk(KERN_ERR, dev, 1233 "pcmcia: device %s (driver %s) did " 1234 "not want to go to sleep (%d)\n", 1235 p_dev->devname, p_drv->drv.name, ret); 1236 goto out; 1237 } 1238 } 1239 1240 if (p_dev->device_no == p_dev->func) { 1241 ds_dev_dbg(2, dev, "releasing configuration\n"); 1242 pcmcia_release_configuration(p_dev); 1243 } 1244 1245 out: 1246 if (!ret) 1247 p_dev->suspended = 1; 1248 return ret; 1249 } 1250 1251 1252 static int pcmcia_dev_resume(struct device * dev) 1253 { 1254 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); 1255 struct pcmcia_driver *p_drv = NULL; 1256 int ret = 0; 1257 1258 if (!p_dev->suspended) 1259 return 0; 1260 1261 ds_dev_dbg(2, dev, "resuming\n"); 1262 1263 if (dev->driver) 1264 p_drv = to_pcmcia_drv(dev->driver); 1265 1266 if (!p_drv) 1267 goto out; 1268 1269 if (p_dev->device_no == p_dev->func) { 1270 ds_dev_dbg(2, dev, "requesting configuration\n"); 1271 ret = pcmcia_request_configuration(p_dev, &p_dev->conf); 1272 if (ret) 1273 goto out; 1274 } 1275 1276 if (p_drv->resume) 1277 ret = p_drv->resume(p_dev); 1278 1279 out: 1280 if (!ret) 1281 p_dev->suspended = 0; 1282 return ret; 1283 } 1284 1285 1286 static int pcmcia_bus_suspend_callback(struct device *dev, void * _data) 1287 { 1288 struct pcmcia_socket *skt = _data; 1289 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); 1290 1291 if (p_dev->socket != skt || p_dev->suspended) 1292 return 0; 1293 1294 return runtime_suspend(dev); 1295 } 1296 1297 static int pcmcia_bus_resume_callback(struct device *dev, void * _data) 1298 { 1299 struct pcmcia_socket *skt = _data; 1300 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); 1301 1302 if (p_dev->socket != skt || !p_dev->suspended) 1303 return 0; 1304 1305 runtime_resume(dev); 1306 1307 return 0; 1308 } 1309 1310 static int pcmcia_bus_resume(struct pcmcia_socket *skt) 1311 { 1312 ds_dev_dbg(2, &skt->dev, "resuming socket %d\n", skt->sock); 1313 bus_for_each_dev(&pcmcia_bus_type, NULL, skt, pcmcia_bus_resume_callback); 1314 return 0; 1315 } 1316 1317 static int pcmcia_bus_suspend(struct pcmcia_socket *skt) 1318 { 1319 ds_dev_dbg(2, &skt->dev, "suspending socket %d\n", skt->sock); 1320 if (bus_for_each_dev(&pcmcia_bus_type, NULL, skt, 1321 pcmcia_bus_suspend_callback)) { 1322 pcmcia_bus_resume(skt); 1323 return -EIO; 1324 } 1325 return 0; 1326 } 1327 1328 1329 /*====================================================================== 1330 1331 The card status event handler. 1332 1333 ======================================================================*/ 1334 1335 /* Normally, the event is passed to individual drivers after 1336 * informing userspace. Only for CS_EVENT_CARD_REMOVAL this 1337 * is inversed to maintain historic compatibility. 1338 */ 1339 1340 static int ds_event(struct pcmcia_socket *skt, event_t event, int priority) 1341 { 1342 struct pcmcia_socket *s = pcmcia_get_socket(skt); 1343 1344 if (!s) { 1345 dev_printk(KERN_ERR, &skt->dev, 1346 "PCMCIA obtaining reference to socket " \ 1347 "failed, event 0x%x lost!\n", event); 1348 return -ENODEV; 1349 } 1350 1351 ds_dev_dbg(1, &skt->dev, "ds_event(0x%06x, %d, 0x%p)\n", 1352 event, priority, skt); 1353 1354 switch (event) { 1355 case CS_EVENT_CARD_REMOVAL: 1356 s->pcmcia_state.present = 0; 1357 pcmcia_card_remove(skt, NULL); 1358 handle_event(skt, event); 1359 break; 1360 1361 case CS_EVENT_CARD_INSERTION: 1362 s->pcmcia_state.present = 1; 1363 pcmcia_card_add(skt); 1364 handle_event(skt, event); 1365 break; 1366 1367 case CS_EVENT_EJECTION_REQUEST: 1368 break; 1369 1370 case CS_EVENT_PM_SUSPEND: 1371 case CS_EVENT_PM_RESUME: 1372 case CS_EVENT_RESET_PHYSICAL: 1373 case CS_EVENT_CARD_RESET: 1374 default: 1375 handle_event(skt, event); 1376 break; 1377 } 1378 1379 pcmcia_put_socket(s); 1380 1381 return 0; 1382 } /* ds_event */ 1383 1384 1385 struct pcmcia_device * pcmcia_dev_present(struct pcmcia_device *_p_dev) 1386 { 1387 struct pcmcia_device *p_dev; 1388 struct pcmcia_device *ret = NULL; 1389 1390 p_dev = pcmcia_get_dev(_p_dev); 1391 if (!p_dev) 1392 return NULL; 1393 1394 if (!p_dev->socket->pcmcia_state.present) 1395 goto out; 1396 1397 if (p_dev->_removed) 1398 goto out; 1399 1400 if (p_dev->suspended) 1401 goto out; 1402 1403 ret = p_dev; 1404 out: 1405 pcmcia_put_dev(p_dev); 1406 return ret; 1407 } 1408 EXPORT_SYMBOL(pcmcia_dev_present); 1409 1410 1411 static struct pcmcia_callback pcmcia_bus_callback = { 1412 .owner = THIS_MODULE, 1413 .event = ds_event, 1414 .requery = pcmcia_bus_rescan, 1415 .suspend = pcmcia_bus_suspend, 1416 .resume = pcmcia_bus_resume, 1417 }; 1418 1419 static int __devinit pcmcia_bus_add_socket(struct device *dev, 1420 struct class_interface *class_intf) 1421 { 1422 struct pcmcia_socket *socket = dev_get_drvdata(dev); 1423 int ret; 1424 1425 socket = pcmcia_get_socket(socket); 1426 if (!socket) { 1427 dev_printk(KERN_ERR, dev, 1428 "PCMCIA obtaining reference to socket failed\n"); 1429 return -ENODEV; 1430 } 1431 1432 /* 1433 * Ugly. But we want to wait for the socket threads to have started up. 1434 * We really should let the drivers themselves drive some of this.. 1435 */ 1436 msleep(250); 1437 1438 #ifdef CONFIG_PCMCIA_IOCTL 1439 init_waitqueue_head(&socket->queue); 1440 #endif 1441 INIT_LIST_HEAD(&socket->devices_list); 1442 INIT_WORK(&socket->device_add, pcmcia_delayed_add_device); 1443 memset(&socket->pcmcia_state, 0, sizeof(u8)); 1444 socket->device_count = 0; 1445 1446 ret = pccard_register_pcmcia(socket, &pcmcia_bus_callback); 1447 if (ret) { 1448 dev_printk(KERN_ERR, dev, "PCMCIA registration failed\n"); 1449 pcmcia_put_socket(socket); 1450 return (ret); 1451 } 1452 1453 return 0; 1454 } 1455 1456 static void pcmcia_bus_remove_socket(struct device *dev, 1457 struct class_interface *class_intf) 1458 { 1459 struct pcmcia_socket *socket = dev_get_drvdata(dev); 1460 1461 if (!socket) 1462 return; 1463 1464 socket->pcmcia_state.dead = 1; 1465 pccard_register_pcmcia(socket, NULL); 1466 1467 /* unregister any unbound devices */ 1468 mutex_lock(&socket->skt_mutex); 1469 pcmcia_card_remove(socket, NULL); 1470 mutex_unlock(&socket->skt_mutex); 1471 1472 pcmcia_put_socket(socket); 1473 1474 return; 1475 } 1476 1477 1478 /* the pcmcia_bus_interface is used to handle pcmcia socket devices */ 1479 static struct class_interface pcmcia_bus_interface __refdata = { 1480 .class = &pcmcia_socket_class, 1481 .add_dev = &pcmcia_bus_add_socket, 1482 .remove_dev = &pcmcia_bus_remove_socket, 1483 }; 1484 1485 1486 struct bus_type pcmcia_bus_type = { 1487 .name = "pcmcia", 1488 .uevent = pcmcia_bus_uevent, 1489 .match = pcmcia_bus_match, 1490 .dev_attrs = pcmcia_dev_attrs, 1491 .probe = pcmcia_device_probe, 1492 .remove = pcmcia_device_remove, 1493 .suspend = pcmcia_dev_suspend, 1494 .resume = pcmcia_dev_resume, 1495 }; 1496 1497 1498 static int __init init_pcmcia_bus(void) 1499 { 1500 int ret; 1501 1502 spin_lock_init(&pcmcia_dev_list_lock); 1503 1504 ret = bus_register(&pcmcia_bus_type); 1505 if (ret < 0) { 1506 printk(KERN_WARNING "pcmcia: bus_register error: %d\n", ret); 1507 return ret; 1508 } 1509 ret = class_interface_register(&pcmcia_bus_interface); 1510 if (ret < 0) { 1511 printk(KERN_WARNING 1512 "pcmcia: class_interface_register error: %d\n", ret); 1513 bus_unregister(&pcmcia_bus_type); 1514 return ret; 1515 } 1516 1517 pcmcia_setup_ioctl(); 1518 1519 return 0; 1520 } 1521 fs_initcall(init_pcmcia_bus); /* one level after subsys_initcall so that 1522 * pcmcia_socket_class is already registered */ 1523 1524 1525 static void __exit exit_pcmcia_bus(void) 1526 { 1527 pcmcia_cleanup_ioctl(); 1528 1529 class_interface_unregister(&pcmcia_bus_interface); 1530 1531 bus_unregister(&pcmcia_bus_type); 1532 } 1533 module_exit(exit_pcmcia_bus); 1534 1535 1536 MODULE_ALIAS("ds"); 1537