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 INIT_LIST_HEAD(&dynid->node); 240 dynid->id.match_flags = match_flags; 241 dynid->id.manf_id = manf_id; 242 dynid->id.card_id = card_id; 243 dynid->id.func_id = func_id; 244 dynid->id.function = function; 245 dynid->id.device_no = device_no; 246 memcpy(dynid->id.prod_id_hash, prod_id_hash, sizeof(__u32) * 4); 247 248 spin_lock(&pdrv->dynids.lock); 249 list_add_tail(&pdrv->dynids.list, &dynid->node); 250 spin_unlock(&pdrv->dynids.lock); 251 252 if (get_driver(&pdrv->drv)) { 253 retval = driver_attach(&pdrv->drv); 254 put_driver(&pdrv->drv); 255 } 256 257 if (retval) 258 return retval; 259 return count; 260 } 261 static DRIVER_ATTR(new_id, S_IWUSR, NULL, pcmcia_store_new_id); 262 263 static void 264 pcmcia_free_dynids(struct pcmcia_driver *drv) 265 { 266 struct pcmcia_dynid *dynid, *n; 267 268 spin_lock(&drv->dynids.lock); 269 list_for_each_entry_safe(dynid, n, &drv->dynids.list, node) { 270 list_del(&dynid->node); 271 kfree(dynid); 272 } 273 spin_unlock(&drv->dynids.lock); 274 } 275 276 static int 277 pcmcia_create_newid_file(struct pcmcia_driver *drv) 278 { 279 int error = 0; 280 if (drv->probe != NULL) 281 error = driver_create_file(&drv->drv, &driver_attr_new_id); 282 return error; 283 } 284 285 286 /** 287 * pcmcia_register_driver - register a PCMCIA driver with the bus core 288 * @driver: the &driver being registered 289 * 290 * Registers a PCMCIA driver with the PCMCIA bus core. 291 */ 292 int pcmcia_register_driver(struct pcmcia_driver *driver) 293 { 294 int error; 295 296 if (!driver) 297 return -EINVAL; 298 299 pcmcia_check_driver(driver); 300 301 /* initialize common fields */ 302 driver->drv.bus = &pcmcia_bus_type; 303 driver->drv.owner = driver->owner; 304 spin_lock_init(&driver->dynids.lock); 305 INIT_LIST_HEAD(&driver->dynids.list); 306 307 ds_dbg(3, "registering driver %s\n", driver->drv.name); 308 309 error = driver_register(&driver->drv); 310 if (error < 0) 311 return error; 312 313 error = pcmcia_create_newid_file(driver); 314 if (error) 315 driver_unregister(&driver->drv); 316 317 return error; 318 } 319 EXPORT_SYMBOL(pcmcia_register_driver); 320 321 /** 322 * pcmcia_unregister_driver - unregister a PCMCIA driver with the bus core 323 * @driver: the &driver being unregistered 324 */ 325 void pcmcia_unregister_driver(struct pcmcia_driver *driver) 326 { 327 ds_dbg(3, "unregistering driver %s\n", driver->drv.name); 328 driver_unregister(&driver->drv); 329 pcmcia_free_dynids(driver); 330 } 331 EXPORT_SYMBOL(pcmcia_unregister_driver); 332 333 334 /* pcmcia_device handling */ 335 336 struct pcmcia_device * pcmcia_get_dev(struct pcmcia_device *p_dev) 337 { 338 struct device *tmp_dev; 339 tmp_dev = get_device(&p_dev->dev); 340 if (!tmp_dev) 341 return NULL; 342 return to_pcmcia_dev(tmp_dev); 343 } 344 345 void pcmcia_put_dev(struct pcmcia_device *p_dev) 346 { 347 if (p_dev) 348 put_device(&p_dev->dev); 349 } 350 351 static void pcmcia_release_function(struct kref *ref) 352 { 353 struct config_t *c = container_of(ref, struct config_t, ref); 354 ds_dbg(1, "releasing config_t\n"); 355 kfree(c); 356 } 357 358 static void pcmcia_release_dev(struct device *dev) 359 { 360 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); 361 ds_dev_dbg(1, dev, "releasing device\n"); 362 pcmcia_put_socket(p_dev->socket); 363 kfree(p_dev->devname); 364 kref_put(&p_dev->function_config->ref, pcmcia_release_function); 365 kfree(p_dev); 366 } 367 368 static void pcmcia_add_device_later(struct pcmcia_socket *s, int mfc) 369 { 370 if (!s->pcmcia_state.device_add_pending) { 371 ds_dev_dbg(1, &s->dev, "scheduling to add %s secondary" 372 " device to %d\n", mfc ? "mfc" : "pfc", s->sock); 373 s->pcmcia_state.device_add_pending = 1; 374 s->pcmcia_state.mfc_pfc = mfc; 375 schedule_work(&s->device_add); 376 } 377 return; 378 } 379 380 static int pcmcia_device_probe(struct device * dev) 381 { 382 struct pcmcia_device *p_dev; 383 struct pcmcia_driver *p_drv; 384 struct pcmcia_device_id *did; 385 struct pcmcia_socket *s; 386 cistpl_config_t cis_config; 387 int ret = 0; 388 389 dev = get_device(dev); 390 if (!dev) 391 return -ENODEV; 392 393 p_dev = to_pcmcia_dev(dev); 394 p_drv = to_pcmcia_drv(dev->driver); 395 s = p_dev->socket; 396 397 /* The PCMCIA code passes the match data in via dev_set_drvdata(dev) 398 * which is an ugly hack. Once the driver probe is called it may 399 * and often will overwrite the match data so we must save it first 400 * 401 * handle pseudo multifunction devices: 402 * there are at most two pseudo multifunction devices. 403 * if we're matching against the first, schedule a 404 * call which will then check whether there are two 405 * pseudo devices, and if not, add the second one. 406 */ 407 did = dev_get_drvdata(&p_dev->dev); 408 409 ds_dev_dbg(1, dev, "trying to bind to %s\n", p_drv->drv.name); 410 411 if ((!p_drv->probe) || (!p_dev->function_config) || 412 (!try_module_get(p_drv->owner))) { 413 ret = -EINVAL; 414 goto put_dev; 415 } 416 417 /* set up some more device information */ 418 ret = pccard_read_tuple(p_dev->socket, p_dev->func, CISTPL_CONFIG, 419 &cis_config); 420 if (!ret) { 421 p_dev->conf.ConfigBase = cis_config.base; 422 p_dev->conf.Present = cis_config.rmask[0]; 423 } else { 424 dev_printk(KERN_INFO, dev, 425 "pcmcia: could not parse base and rmask0 of CIS\n"); 426 p_dev->conf.ConfigBase = 0; 427 p_dev->conf.Present = 0; 428 } 429 430 ret = p_drv->probe(p_dev); 431 if (ret) { 432 ds_dev_dbg(1, dev, "binding to %s failed with %d\n", 433 p_drv->drv.name, ret); 434 goto put_module; 435 } 436 437 if (did && (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) && 438 (p_dev->socket->device_count == 1) && (p_dev->device_no == 0)) 439 pcmcia_add_device_later(p_dev->socket, 0); 440 441 put_module: 442 if (ret) 443 module_put(p_drv->owner); 444 put_dev: 445 if (ret) 446 put_device(dev); 447 return (ret); 448 } 449 450 451 /* 452 * Removes a PCMCIA card from the device tree and socket list. 453 */ 454 static void pcmcia_card_remove(struct pcmcia_socket *s, struct pcmcia_device *leftover) 455 { 456 struct pcmcia_device *p_dev; 457 struct pcmcia_device *tmp; 458 unsigned long flags; 459 460 ds_dev_dbg(2, leftover ? &leftover->dev : &s->dev, 461 "pcmcia_card_remove(%d) %s\n", s->sock, 462 leftover ? leftover->devname : ""); 463 464 if (!leftover) 465 s->device_count = 0; 466 else 467 s->device_count = 1; 468 469 /* unregister all pcmcia_devices registered with this socket, except leftover */ 470 list_for_each_entry_safe(p_dev, tmp, &s->devices_list, socket_device_list) { 471 if (p_dev == leftover) 472 continue; 473 474 spin_lock_irqsave(&pcmcia_dev_list_lock, flags); 475 list_del(&p_dev->socket_device_list); 476 p_dev->_removed=1; 477 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); 478 479 ds_dev_dbg(2, &p_dev->dev, "unregistering device\n"); 480 device_unregister(&p_dev->dev); 481 } 482 483 return; 484 } 485 486 static int pcmcia_device_remove(struct device * dev) 487 { 488 struct pcmcia_device *p_dev; 489 struct pcmcia_driver *p_drv; 490 struct pcmcia_device_id *did; 491 int i; 492 493 p_dev = to_pcmcia_dev(dev); 494 p_drv = to_pcmcia_drv(dev->driver); 495 496 ds_dev_dbg(1, dev, "removing device\n"); 497 498 /* If we're removing the primary module driving a 499 * pseudo multi-function card, we need to unbind 500 * all devices 501 */ 502 did = dev_get_drvdata(&p_dev->dev); 503 if (did && (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) && 504 (p_dev->socket->device_count != 0) && 505 (p_dev->device_no == 0)) 506 pcmcia_card_remove(p_dev->socket, p_dev); 507 508 /* detach the "instance" */ 509 if (!p_drv) 510 return 0; 511 512 if (p_drv->remove) 513 p_drv->remove(p_dev); 514 515 p_dev->dev_node = NULL; 516 517 /* check for proper unloading */ 518 if (p_dev->_irq || p_dev->_io || p_dev->_locked) 519 dev_printk(KERN_INFO, dev, 520 "pcmcia: driver %s did not release config properly\n", 521 p_drv->drv.name); 522 523 for (i = 0; i < MAX_WIN; i++) 524 if (p_dev->_win & CLIENT_WIN_REQ(i)) 525 dev_printk(KERN_INFO, dev, 526 "pcmcia: driver %s did not release window properly\n", 527 p_drv->drv.name); 528 529 /* references from pcmcia_probe_device */ 530 pcmcia_put_dev(p_dev); 531 module_put(p_drv->owner); 532 533 return 0; 534 } 535 536 537 /* 538 * pcmcia_device_query -- determine information about a pcmcia device 539 */ 540 static int pcmcia_device_query(struct pcmcia_device *p_dev) 541 { 542 cistpl_manfid_t manf_id; 543 cistpl_funcid_t func_id; 544 cistpl_vers_1_t *vers1; 545 unsigned int i; 546 547 vers1 = kmalloc(sizeof(*vers1), GFP_KERNEL); 548 if (!vers1) 549 return -ENOMEM; 550 551 if (!pccard_read_tuple(p_dev->socket, p_dev->func, 552 CISTPL_MANFID, &manf_id)) { 553 p_dev->manf_id = manf_id.manf; 554 p_dev->card_id = manf_id.card; 555 p_dev->has_manf_id = 1; 556 p_dev->has_card_id = 1; 557 } 558 559 if (!pccard_read_tuple(p_dev->socket, p_dev->func, 560 CISTPL_FUNCID, &func_id)) { 561 p_dev->func_id = func_id.func; 562 p_dev->has_func_id = 1; 563 } else { 564 /* rule of thumb: cards with no FUNCID, but with 565 * common memory device geometry information, are 566 * probably memory cards (from pcmcia-cs) */ 567 cistpl_device_geo_t *devgeo; 568 569 devgeo = kmalloc(sizeof(*devgeo), GFP_KERNEL); 570 if (!devgeo) { 571 kfree(vers1); 572 return -ENOMEM; 573 } 574 if (!pccard_read_tuple(p_dev->socket, p_dev->func, 575 CISTPL_DEVICE_GEO, devgeo)) { 576 ds_dev_dbg(0, &p_dev->dev, 577 "mem device geometry probably means " 578 "FUNCID_MEMORY\n"); 579 p_dev->func_id = CISTPL_FUNCID_MEMORY; 580 p_dev->has_func_id = 1; 581 } 582 kfree(devgeo); 583 } 584 585 if (!pccard_read_tuple(p_dev->socket, p_dev->func, CISTPL_VERS_1, 586 vers1)) { 587 for (i=0; i < vers1->ns; i++) { 588 char *tmp; 589 unsigned int length; 590 591 tmp = vers1->str + vers1->ofs[i]; 592 593 length = strlen(tmp) + 1; 594 if ((length < 2) || (length > 255)) 595 continue; 596 597 p_dev->prod_id[i] = kmalloc(sizeof(char) * length, 598 GFP_KERNEL); 599 if (!p_dev->prod_id[i]) 600 continue; 601 602 p_dev->prod_id[i] = strncpy(p_dev->prod_id[i], 603 tmp, length); 604 } 605 } 606 607 kfree(vers1); 608 return 0; 609 } 610 611 612 /* device_add_lock is needed to avoid double registration by cardmgr and kernel. 613 * Serializes pcmcia_device_add; will most likely be removed in future. 614 * 615 * While it has the caveat that adding new PCMCIA devices inside(!) device_register() 616 * won't work, this doesn't matter much at the moment: the driver core doesn't 617 * support it either. 618 */ 619 static DEFINE_MUTEX(device_add_lock); 620 621 struct pcmcia_device * pcmcia_device_add(struct pcmcia_socket *s, unsigned int function) 622 { 623 struct pcmcia_device *p_dev, *tmp_dev; 624 unsigned long flags; 625 626 s = pcmcia_get_socket(s); 627 if (!s) 628 return NULL; 629 630 mutex_lock(&device_add_lock); 631 632 ds_dbg(3, "adding device to %d, function %d\n", s->sock, function); 633 634 /* max of 4 devices per card */ 635 if (s->device_count == 4) 636 goto err_put; 637 638 p_dev = kzalloc(sizeof(struct pcmcia_device), GFP_KERNEL); 639 if (!p_dev) 640 goto err_put; 641 642 p_dev->socket = s; 643 p_dev->device_no = (s->device_count++); 644 p_dev->func = function; 645 646 p_dev->dev.bus = &pcmcia_bus_type; 647 p_dev->dev.parent = s->dev.parent; 648 p_dev->dev.release = pcmcia_release_dev; 649 /* by default don't allow DMA */ 650 p_dev->dma_mask = DMA_MASK_NONE; 651 p_dev->dev.dma_mask = &p_dev->dma_mask; 652 dev_set_name(&p_dev->dev, "%d.%d", p_dev->socket->sock, p_dev->device_no); 653 if (!dev_name(&p_dev->dev)) 654 goto err_free; 655 p_dev->devname = kasprintf(GFP_KERNEL, "pcmcia%s", dev_name(&p_dev->dev)); 656 if (!p_dev->devname) 657 goto err_free; 658 ds_dev_dbg(3, &p_dev->dev, "devname is %s\n", p_dev->devname); 659 660 spin_lock_irqsave(&pcmcia_dev_list_lock, flags); 661 662 /* 663 * p_dev->function_config must be the same for all card functions. 664 * Note that this is serialized by the device_add_lock, so that 665 * only one such struct will be created. 666 */ 667 list_for_each_entry(tmp_dev, &s->devices_list, socket_device_list) 668 if (p_dev->func == tmp_dev->func) { 669 p_dev->function_config = tmp_dev->function_config; 670 p_dev->io = tmp_dev->io; 671 p_dev->irq = tmp_dev->irq; 672 kref_get(&p_dev->function_config->ref); 673 } 674 675 /* Add to the list in pcmcia_bus_socket */ 676 list_add(&p_dev->socket_device_list, &s->devices_list); 677 678 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); 679 680 if (!p_dev->function_config) { 681 ds_dev_dbg(3, &p_dev->dev, "creating config_t\n"); 682 p_dev->function_config = kzalloc(sizeof(struct config_t), 683 GFP_KERNEL); 684 if (!p_dev->function_config) 685 goto err_unreg; 686 kref_init(&p_dev->function_config->ref); 687 } 688 689 dev_printk(KERN_NOTICE, &p_dev->dev, 690 "pcmcia: registering new device %s\n", 691 p_dev->devname); 692 693 pcmcia_device_query(p_dev); 694 695 if (device_register(&p_dev->dev)) 696 goto err_unreg; 697 698 mutex_unlock(&device_add_lock); 699 700 return p_dev; 701 702 err_unreg: 703 spin_lock_irqsave(&pcmcia_dev_list_lock, flags); 704 list_del(&p_dev->socket_device_list); 705 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); 706 707 err_free: 708 kfree(p_dev->devname); 709 kfree(p_dev); 710 s->device_count--; 711 err_put: 712 mutex_unlock(&device_add_lock); 713 pcmcia_put_socket(s); 714 715 return NULL; 716 } 717 718 719 static int pcmcia_card_add(struct pcmcia_socket *s) 720 { 721 cistpl_longlink_mfc_t mfc; 722 unsigned int no_funcs, i, no_chains; 723 int ret = 0; 724 725 if (!(s->resource_setup_done)) { 726 ds_dev_dbg(3, &s->dev, 727 "no resources available, delaying card_add\n"); 728 return -EAGAIN; /* try again, but later... */ 729 } 730 731 if (pcmcia_validate_mem(s)) { 732 ds_dev_dbg(3, &s->dev, "validating mem resources failed, " 733 "delaying card_add\n"); 734 return -EAGAIN; /* try again, but later... */ 735 } 736 737 ret = pccard_validate_cis(s, BIND_FN_ALL, &no_chains); 738 if (ret || !no_chains) { 739 ds_dev_dbg(0, &s->dev, "invalid CIS or invalid resources\n"); 740 return -ENODEV; 741 } 742 743 if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC, &mfc)) 744 no_funcs = mfc.nfn; 745 else 746 no_funcs = 1; 747 s->functions = no_funcs; 748 749 for (i=0; i < no_funcs; i++) 750 pcmcia_device_add(s, i); 751 752 return (ret); 753 } 754 755 756 static void pcmcia_delayed_add_device(struct work_struct *work) 757 { 758 struct pcmcia_socket *s = 759 container_of(work, struct pcmcia_socket, device_add); 760 ds_dev_dbg(1, &s->dev, "adding additional device to %d\n", s->sock); 761 pcmcia_device_add(s, s->pcmcia_state.mfc_pfc); 762 s->pcmcia_state.device_add_pending = 0; 763 s->pcmcia_state.mfc_pfc = 0; 764 } 765 766 static int pcmcia_requery(struct device *dev, void * _data) 767 { 768 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); 769 if (!p_dev->dev.driver) { 770 ds_dev_dbg(1, dev, "update device information\n"); 771 pcmcia_device_query(p_dev); 772 } 773 774 return 0; 775 } 776 777 static void pcmcia_bus_rescan(struct pcmcia_socket *skt, int new_cis) 778 { 779 int no_devices = 0; 780 int ret = 0; 781 unsigned long flags; 782 783 /* must be called with skt_mutex held */ 784 ds_dev_dbg(0, &skt->dev, "re-scanning socket %d\n", skt->sock); 785 786 spin_lock_irqsave(&pcmcia_dev_list_lock, flags); 787 if (list_empty(&skt->devices_list)) 788 no_devices = 1; 789 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); 790 791 /* If this is because of a CIS override, start over */ 792 if (new_cis && !no_devices) 793 pcmcia_card_remove(skt, NULL); 794 795 /* if no devices were added for this socket yet because of 796 * missing resource information or other trouble, we need to 797 * do this now. */ 798 if (no_devices || new_cis) { 799 ret = pcmcia_card_add(skt); 800 if (ret) 801 return; 802 } 803 804 /* some device information might have changed because of a CIS 805 * update or because we can finally read it correctly... so 806 * determine it again, overwriting old values if necessary. */ 807 bus_for_each_dev(&pcmcia_bus_type, NULL, NULL, pcmcia_requery); 808 809 /* we re-scan all devices, not just the ones connected to this 810 * socket. This does not matter, though. */ 811 ret = bus_rescan_devices(&pcmcia_bus_type); 812 if (ret) 813 printk(KERN_INFO "pcmcia: bus_rescan_devices failed\n"); 814 } 815 816 #ifdef CONFIG_PCMCIA_LOAD_CIS 817 818 /** 819 * pcmcia_load_firmware - load CIS from userspace if device-provided is broken 820 * @dev: the pcmcia device which needs a CIS override 821 * @filename: requested filename in /lib/firmware/ 822 * 823 * This uses the in-kernel firmware loading mechanism to use a "fake CIS" if 824 * the one provided by the card is broken. The firmware files reside in 825 * /lib/firmware/ in userspace. 826 */ 827 static int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename) 828 { 829 struct pcmcia_socket *s = dev->socket; 830 const struct firmware *fw; 831 int ret = -ENOMEM; 832 int no_funcs; 833 int old_funcs; 834 cistpl_longlink_mfc_t mfc; 835 836 if (!filename) 837 return -EINVAL; 838 839 ds_dev_dbg(1, &dev->dev, "trying to load CIS file %s\n", filename); 840 841 if (request_firmware(&fw, filename, &dev->dev) == 0) { 842 if (fw->size >= CISTPL_MAX_CIS_SIZE) { 843 ret = -EINVAL; 844 dev_printk(KERN_ERR, &dev->dev, 845 "pcmcia: CIS override is too big\n"); 846 goto release; 847 } 848 849 if (!pcmcia_replace_cis(s, fw->data, fw->size)) 850 ret = 0; 851 else { 852 dev_printk(KERN_ERR, &dev->dev, 853 "pcmcia: CIS override failed\n"); 854 goto release; 855 } 856 857 858 /* update information */ 859 pcmcia_device_query(dev); 860 861 /* does this cis override add or remove functions? */ 862 old_funcs = s->functions; 863 864 if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC, &mfc)) 865 no_funcs = mfc.nfn; 866 else 867 no_funcs = 1; 868 s->functions = no_funcs; 869 870 if (old_funcs > no_funcs) 871 pcmcia_card_remove(s, dev); 872 else if (no_funcs > old_funcs) 873 pcmcia_add_device_later(s, 1); 874 } 875 release: 876 release_firmware(fw); 877 878 return (ret); 879 } 880 881 #else /* !CONFIG_PCMCIA_LOAD_CIS */ 882 883 static inline int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename) 884 { 885 return -ENODEV; 886 } 887 888 #endif 889 890 891 static inline int pcmcia_devmatch(struct pcmcia_device *dev, 892 struct pcmcia_device_id *did) 893 { 894 if (did->match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID) { 895 if ((!dev->has_manf_id) || (dev->manf_id != did->manf_id)) 896 return 0; 897 } 898 899 if (did->match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID) { 900 if ((!dev->has_card_id) || (dev->card_id != did->card_id)) 901 return 0; 902 } 903 904 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION) { 905 if (dev->func != did->function) 906 return 0; 907 } 908 909 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1) { 910 if (!dev->prod_id[0]) 911 return 0; 912 if (strcmp(did->prod_id[0], dev->prod_id[0])) 913 return 0; 914 } 915 916 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2) { 917 if (!dev->prod_id[1]) 918 return 0; 919 if (strcmp(did->prod_id[1], dev->prod_id[1])) 920 return 0; 921 } 922 923 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3) { 924 if (!dev->prod_id[2]) 925 return 0; 926 if (strcmp(did->prod_id[2], dev->prod_id[2])) 927 return 0; 928 } 929 930 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4) { 931 if (!dev->prod_id[3]) 932 return 0; 933 if (strcmp(did->prod_id[3], dev->prod_id[3])) 934 return 0; 935 } 936 937 if (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) { 938 if (dev->device_no != did->device_no) 939 return 0; 940 } 941 942 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID) { 943 if ((!dev->has_func_id) || (dev->func_id != did->func_id)) 944 return 0; 945 946 /* if this is a pseudo-multi-function device, 947 * we need explicit matches */ 948 if (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) 949 return 0; 950 if (dev->device_no) 951 return 0; 952 953 /* also, FUNC_ID matching needs to be activated by userspace 954 * after it has re-checked that there is no possible module 955 * with a prod_id/manf_id/card_id match. 956 */ 957 ds_dev_dbg(0, &dev->dev, 958 "skipping FUNC_ID match until userspace interaction\n"); 959 if (!dev->allow_func_id_match) 960 return 0; 961 } 962 963 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FAKE_CIS) { 964 ds_dev_dbg(0, &dev->dev, "device needs a fake CIS\n"); 965 if (!dev->socket->fake_cis) 966 pcmcia_load_firmware(dev, did->cisfile); 967 968 if (!dev->socket->fake_cis) 969 return 0; 970 } 971 972 if (did->match_flags & PCMCIA_DEV_ID_MATCH_ANONYMOUS) { 973 int i; 974 for (i=0; i<4; i++) 975 if (dev->prod_id[i]) 976 return 0; 977 if (dev->has_manf_id || dev->has_card_id || dev->has_func_id) 978 return 0; 979 } 980 981 dev_set_drvdata(&dev->dev, did); 982 983 return 1; 984 } 985 986 987 static int pcmcia_bus_match(struct device * dev, struct device_driver * drv) { 988 struct pcmcia_device * p_dev = to_pcmcia_dev(dev); 989 struct pcmcia_driver * p_drv = to_pcmcia_drv(drv); 990 struct pcmcia_device_id *did = p_drv->id_table; 991 struct pcmcia_dynid *dynid; 992 993 /* match dynamic devices first */ 994 spin_lock(&p_drv->dynids.lock); 995 list_for_each_entry(dynid, &p_drv->dynids.list, node) { 996 ds_dev_dbg(3, dev, "trying to match to %s\n", drv->name); 997 if (pcmcia_devmatch(p_dev, &dynid->id)) { 998 ds_dev_dbg(0, dev, "matched to %s\n", drv->name); 999 spin_unlock(&p_drv->dynids.lock); 1000 return 1; 1001 } 1002 } 1003 spin_unlock(&p_drv->dynids.lock); 1004 1005 #ifdef CONFIG_PCMCIA_IOCTL 1006 /* matching by cardmgr */ 1007 if (p_dev->cardmgr == p_drv) { 1008 ds_dev_dbg(0, dev, "cardmgr matched to %s\n", drv->name); 1009 return 1; 1010 } 1011 #endif 1012 1013 while (did && did->match_flags) { 1014 ds_dev_dbg(3, dev, "trying to match to %s\n", drv->name); 1015 if (pcmcia_devmatch(p_dev, did)) { 1016 ds_dev_dbg(0, dev, "matched to %s\n", drv->name); 1017 return 1; 1018 } 1019 did++; 1020 } 1021 1022 return 0; 1023 } 1024 1025 #ifdef CONFIG_HOTPLUG 1026 1027 static int pcmcia_bus_uevent(struct device *dev, struct kobj_uevent_env *env) 1028 { 1029 struct pcmcia_device *p_dev; 1030 int i; 1031 u32 hash[4] = { 0, 0, 0, 0}; 1032 1033 if (!dev) 1034 return -ENODEV; 1035 1036 p_dev = to_pcmcia_dev(dev); 1037 1038 /* calculate hashes */ 1039 for (i=0; i<4; i++) { 1040 if (!p_dev->prod_id[i]) 1041 continue; 1042 hash[i] = crc32(0, p_dev->prod_id[i], strlen(p_dev->prod_id[i])); 1043 } 1044 1045 if (add_uevent_var(env, "SOCKET_NO=%u", p_dev->socket->sock)) 1046 return -ENOMEM; 1047 1048 if (add_uevent_var(env, "DEVICE_NO=%02X", p_dev->device_no)) 1049 return -ENOMEM; 1050 1051 if (add_uevent_var(env, "MODALIAS=pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X" 1052 "pa%08Xpb%08Xpc%08Xpd%08X", 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, 1057 p_dev->device_no, 1058 hash[0], 1059 hash[1], 1060 hash[2], 1061 hash[3])) 1062 return -ENOMEM; 1063 1064 return 0; 1065 } 1066 1067 #else 1068 1069 static int pcmcia_bus_uevent(struct device *dev, struct kobj_uevent_env *env) 1070 { 1071 return -ENODEV; 1072 } 1073 1074 #endif 1075 1076 /************************ runtime PM support ***************************/ 1077 1078 static int pcmcia_dev_suspend(struct device *dev, pm_message_t state); 1079 static int pcmcia_dev_resume(struct device *dev); 1080 1081 static int runtime_suspend(struct device *dev) 1082 { 1083 int rc; 1084 1085 down(&dev->sem); 1086 rc = pcmcia_dev_suspend(dev, PMSG_SUSPEND); 1087 up(&dev->sem); 1088 return rc; 1089 } 1090 1091 static void runtime_resume(struct device *dev) 1092 { 1093 int rc; 1094 1095 down(&dev->sem); 1096 rc = pcmcia_dev_resume(dev); 1097 up(&dev->sem); 1098 } 1099 1100 /************************ per-device sysfs output ***************************/ 1101 1102 #define pcmcia_device_attr(field, test, format) \ 1103 static ssize_t field##_show (struct device *dev, struct device_attribute *attr, char *buf) \ 1104 { \ 1105 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \ 1106 return p_dev->test ? sprintf (buf, format, p_dev->field) : -ENODEV; \ 1107 } 1108 1109 #define pcmcia_device_stringattr(name, field) \ 1110 static ssize_t name##_show (struct device *dev, struct device_attribute *attr, char *buf) \ 1111 { \ 1112 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \ 1113 return p_dev->field ? sprintf (buf, "%s\n", p_dev->field) : -ENODEV; \ 1114 } 1115 1116 pcmcia_device_attr(func, socket, "0x%02x\n"); 1117 pcmcia_device_attr(func_id, has_func_id, "0x%02x\n"); 1118 pcmcia_device_attr(manf_id, has_manf_id, "0x%04x\n"); 1119 pcmcia_device_attr(card_id, has_card_id, "0x%04x\n"); 1120 pcmcia_device_stringattr(prod_id1, prod_id[0]); 1121 pcmcia_device_stringattr(prod_id2, prod_id[1]); 1122 pcmcia_device_stringattr(prod_id3, prod_id[2]); 1123 pcmcia_device_stringattr(prod_id4, prod_id[3]); 1124 1125 1126 static ssize_t pcmcia_show_pm_state(struct device *dev, struct device_attribute *attr, char *buf) 1127 { 1128 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); 1129 1130 if (p_dev->suspended) 1131 return sprintf(buf, "off\n"); 1132 else 1133 return sprintf(buf, "on\n"); 1134 } 1135 1136 static ssize_t pcmcia_store_pm_state(struct device *dev, struct device_attribute *attr, 1137 const char *buf, size_t count) 1138 { 1139 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); 1140 int ret = 0; 1141 1142 if (!count) 1143 return -EINVAL; 1144 1145 if ((!p_dev->suspended) && !strncmp(buf, "off", 3)) 1146 ret = runtime_suspend(dev); 1147 else if (p_dev->suspended && !strncmp(buf, "on", 2)) 1148 runtime_resume(dev); 1149 1150 return ret ? ret : count; 1151 } 1152 1153 1154 static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf) 1155 { 1156 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); 1157 int i; 1158 u32 hash[4] = { 0, 0, 0, 0}; 1159 1160 /* calculate hashes */ 1161 for (i=0; i<4; i++) { 1162 if (!p_dev->prod_id[i]) 1163 continue; 1164 hash[i] = crc32(0,p_dev->prod_id[i],strlen(p_dev->prod_id[i])); 1165 } 1166 return sprintf(buf, "pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X" 1167 "pa%08Xpb%08Xpc%08Xpd%08X\n", 1168 p_dev->has_manf_id ? p_dev->manf_id : 0, 1169 p_dev->has_card_id ? p_dev->card_id : 0, 1170 p_dev->has_func_id ? p_dev->func_id : 0, 1171 p_dev->func, p_dev->device_no, 1172 hash[0], hash[1], hash[2], hash[3]); 1173 } 1174 1175 static ssize_t pcmcia_store_allow_func_id_match(struct device *dev, 1176 struct device_attribute *attr, const char *buf, size_t count) 1177 { 1178 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); 1179 int ret; 1180 1181 if (!count) 1182 return -EINVAL; 1183 1184 mutex_lock(&p_dev->socket->skt_mutex); 1185 p_dev->allow_func_id_match = 1; 1186 mutex_unlock(&p_dev->socket->skt_mutex); 1187 1188 ret = bus_rescan_devices(&pcmcia_bus_type); 1189 if (ret) 1190 printk(KERN_INFO "pcmcia: bus_rescan_devices failed after " 1191 "allowing func_id matches\n"); 1192 1193 return count; 1194 } 1195 1196 static struct device_attribute pcmcia_dev_attrs[] = { 1197 __ATTR(function, 0444, func_show, NULL), 1198 __ATTR(pm_state, 0644, pcmcia_show_pm_state, pcmcia_store_pm_state), 1199 __ATTR_RO(func_id), 1200 __ATTR_RO(manf_id), 1201 __ATTR_RO(card_id), 1202 __ATTR_RO(prod_id1), 1203 __ATTR_RO(prod_id2), 1204 __ATTR_RO(prod_id3), 1205 __ATTR_RO(prod_id4), 1206 __ATTR_RO(modalias), 1207 __ATTR(allow_func_id_match, 0200, NULL, pcmcia_store_allow_func_id_match), 1208 __ATTR_NULL, 1209 }; 1210 1211 /* PM support, also needed for reset */ 1212 1213 static int pcmcia_dev_suspend(struct device * dev, pm_message_t state) 1214 { 1215 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); 1216 struct pcmcia_driver *p_drv = NULL; 1217 int ret = 0; 1218 1219 if (p_dev->suspended) 1220 return 0; 1221 1222 ds_dev_dbg(2, dev, "suspending\n"); 1223 1224 if (dev->driver) 1225 p_drv = to_pcmcia_drv(dev->driver); 1226 1227 if (!p_drv) 1228 goto out; 1229 1230 if (p_drv->suspend) { 1231 ret = p_drv->suspend(p_dev); 1232 if (ret) { 1233 dev_printk(KERN_ERR, dev, 1234 "pcmcia: device %s (driver %s) did " 1235 "not want to go to sleep (%d)\n", 1236 p_dev->devname, p_drv->drv.name, ret); 1237 goto out; 1238 } 1239 } 1240 1241 if (p_dev->device_no == p_dev->func) { 1242 ds_dev_dbg(2, dev, "releasing configuration\n"); 1243 pcmcia_release_configuration(p_dev); 1244 } 1245 1246 out: 1247 if (!ret) 1248 p_dev->suspended = 1; 1249 return ret; 1250 } 1251 1252 1253 static int pcmcia_dev_resume(struct device * dev) 1254 { 1255 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); 1256 struct pcmcia_driver *p_drv = NULL; 1257 int ret = 0; 1258 1259 if (!p_dev->suspended) 1260 return 0; 1261 1262 ds_dev_dbg(2, dev, "resuming\n"); 1263 1264 if (dev->driver) 1265 p_drv = to_pcmcia_drv(dev->driver); 1266 1267 if (!p_drv) 1268 goto out; 1269 1270 if (p_dev->device_no == p_dev->func) { 1271 ds_dev_dbg(2, dev, "requesting configuration\n"); 1272 ret = pcmcia_request_configuration(p_dev, &p_dev->conf); 1273 if (ret) 1274 goto out; 1275 } 1276 1277 if (p_drv->resume) 1278 ret = p_drv->resume(p_dev); 1279 1280 out: 1281 if (!ret) 1282 p_dev->suspended = 0; 1283 return ret; 1284 } 1285 1286 1287 static int pcmcia_bus_suspend_callback(struct device *dev, void * _data) 1288 { 1289 struct pcmcia_socket *skt = _data; 1290 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); 1291 1292 if (p_dev->socket != skt || p_dev->suspended) 1293 return 0; 1294 1295 return runtime_suspend(dev); 1296 } 1297 1298 static int pcmcia_bus_resume_callback(struct device *dev, void * _data) 1299 { 1300 struct pcmcia_socket *skt = _data; 1301 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); 1302 1303 if (p_dev->socket != skt || !p_dev->suspended) 1304 return 0; 1305 1306 runtime_resume(dev); 1307 1308 return 0; 1309 } 1310 1311 static int pcmcia_bus_resume(struct pcmcia_socket *skt) 1312 { 1313 ds_dev_dbg(2, &skt->dev, "resuming socket %d\n", skt->sock); 1314 bus_for_each_dev(&pcmcia_bus_type, NULL, skt, pcmcia_bus_resume_callback); 1315 return 0; 1316 } 1317 1318 static int pcmcia_bus_suspend(struct pcmcia_socket *skt) 1319 { 1320 ds_dev_dbg(2, &skt->dev, "suspending socket %d\n", skt->sock); 1321 if (bus_for_each_dev(&pcmcia_bus_type, NULL, skt, 1322 pcmcia_bus_suspend_callback)) { 1323 pcmcia_bus_resume(skt); 1324 return -EIO; 1325 } 1326 return 0; 1327 } 1328 1329 1330 /*====================================================================== 1331 1332 The card status event handler. 1333 1334 ======================================================================*/ 1335 1336 /* Normally, the event is passed to individual drivers after 1337 * informing userspace. Only for CS_EVENT_CARD_REMOVAL this 1338 * is inversed to maintain historic compatibility. 1339 */ 1340 1341 static int ds_event(struct pcmcia_socket *skt, event_t event, int priority) 1342 { 1343 struct pcmcia_socket *s = pcmcia_get_socket(skt); 1344 1345 if (!s) { 1346 dev_printk(KERN_ERR, &skt->dev, 1347 "PCMCIA obtaining reference to socket " \ 1348 "failed, event 0x%x lost!\n", event); 1349 return -ENODEV; 1350 } 1351 1352 ds_dev_dbg(1, &skt->dev, "ds_event(0x%06x, %d, 0x%p)\n", 1353 event, priority, skt); 1354 1355 switch (event) { 1356 case CS_EVENT_CARD_REMOVAL: 1357 s->pcmcia_state.present = 0; 1358 pcmcia_card_remove(skt, NULL); 1359 handle_event(skt, event); 1360 break; 1361 1362 case CS_EVENT_CARD_INSERTION: 1363 s->pcmcia_state.present = 1; 1364 pcmcia_card_add(skt); 1365 handle_event(skt, event); 1366 break; 1367 1368 case CS_EVENT_EJECTION_REQUEST: 1369 break; 1370 1371 case CS_EVENT_PM_SUSPEND: 1372 case CS_EVENT_PM_RESUME: 1373 case CS_EVENT_RESET_PHYSICAL: 1374 case CS_EVENT_CARD_RESET: 1375 default: 1376 handle_event(skt, event); 1377 break; 1378 } 1379 1380 pcmcia_put_socket(s); 1381 1382 return 0; 1383 } /* ds_event */ 1384 1385 1386 struct pcmcia_device * pcmcia_dev_present(struct pcmcia_device *_p_dev) 1387 { 1388 struct pcmcia_device *p_dev; 1389 struct pcmcia_device *ret = NULL; 1390 1391 p_dev = pcmcia_get_dev(_p_dev); 1392 if (!p_dev) 1393 return NULL; 1394 1395 if (!p_dev->socket->pcmcia_state.present) 1396 goto out; 1397 1398 if (p_dev->_removed) 1399 goto out; 1400 1401 if (p_dev->suspended) 1402 goto out; 1403 1404 ret = p_dev; 1405 out: 1406 pcmcia_put_dev(p_dev); 1407 return ret; 1408 } 1409 EXPORT_SYMBOL(pcmcia_dev_present); 1410 1411 1412 static struct pcmcia_callback pcmcia_bus_callback = { 1413 .owner = THIS_MODULE, 1414 .event = ds_event, 1415 .requery = pcmcia_bus_rescan, 1416 .suspend = pcmcia_bus_suspend, 1417 .resume = pcmcia_bus_resume, 1418 }; 1419 1420 static int __devinit pcmcia_bus_add_socket(struct device *dev, 1421 struct class_interface *class_intf) 1422 { 1423 struct pcmcia_socket *socket = dev_get_drvdata(dev); 1424 int ret; 1425 1426 socket = pcmcia_get_socket(socket); 1427 if (!socket) { 1428 dev_printk(KERN_ERR, dev, 1429 "PCMCIA obtaining reference to socket failed\n"); 1430 return -ENODEV; 1431 } 1432 1433 /* 1434 * Ugly. But we want to wait for the socket threads to have started up. 1435 * We really should let the drivers themselves drive some of this.. 1436 */ 1437 msleep(250); 1438 1439 #ifdef CONFIG_PCMCIA_IOCTL 1440 init_waitqueue_head(&socket->queue); 1441 #endif 1442 INIT_LIST_HEAD(&socket->devices_list); 1443 INIT_WORK(&socket->device_add, pcmcia_delayed_add_device); 1444 memset(&socket->pcmcia_state, 0, sizeof(u8)); 1445 socket->device_count = 0; 1446 1447 ret = pccard_register_pcmcia(socket, &pcmcia_bus_callback); 1448 if (ret) { 1449 dev_printk(KERN_ERR, dev, "PCMCIA registration failed\n"); 1450 pcmcia_put_socket(socket); 1451 return (ret); 1452 } 1453 1454 return 0; 1455 } 1456 1457 static void pcmcia_bus_remove_socket(struct device *dev, 1458 struct class_interface *class_intf) 1459 { 1460 struct pcmcia_socket *socket = dev_get_drvdata(dev); 1461 1462 if (!socket) 1463 return; 1464 1465 socket->pcmcia_state.dead = 1; 1466 pccard_register_pcmcia(socket, NULL); 1467 1468 /* unregister any unbound devices */ 1469 mutex_lock(&socket->skt_mutex); 1470 pcmcia_card_remove(socket, NULL); 1471 mutex_unlock(&socket->skt_mutex); 1472 1473 pcmcia_put_socket(socket); 1474 1475 return; 1476 } 1477 1478 1479 /* the pcmcia_bus_interface is used to handle pcmcia socket devices */ 1480 static struct class_interface pcmcia_bus_interface __refdata = { 1481 .class = &pcmcia_socket_class, 1482 .add_dev = &pcmcia_bus_add_socket, 1483 .remove_dev = &pcmcia_bus_remove_socket, 1484 }; 1485 1486 1487 struct bus_type pcmcia_bus_type = { 1488 .name = "pcmcia", 1489 .uevent = pcmcia_bus_uevent, 1490 .match = pcmcia_bus_match, 1491 .dev_attrs = pcmcia_dev_attrs, 1492 .probe = pcmcia_device_probe, 1493 .remove = pcmcia_device_remove, 1494 .suspend = pcmcia_dev_suspend, 1495 .resume = pcmcia_dev_resume, 1496 }; 1497 1498 1499 static int __init init_pcmcia_bus(void) 1500 { 1501 int ret; 1502 1503 spin_lock_init(&pcmcia_dev_list_lock); 1504 1505 ret = bus_register(&pcmcia_bus_type); 1506 if (ret < 0) { 1507 printk(KERN_WARNING "pcmcia: bus_register error: %d\n", ret); 1508 return ret; 1509 } 1510 ret = class_interface_register(&pcmcia_bus_interface); 1511 if (ret < 0) { 1512 printk(KERN_WARNING 1513 "pcmcia: class_interface_register error: %d\n", ret); 1514 bus_unregister(&pcmcia_bus_type); 1515 return ret; 1516 } 1517 1518 pcmcia_setup_ioctl(); 1519 1520 return 0; 1521 } 1522 fs_initcall(init_pcmcia_bus); /* one level after subsys_initcall so that 1523 * pcmcia_socket_class is already registered */ 1524 1525 1526 static void __exit exit_pcmcia_bus(void) 1527 { 1528 pcmcia_cleanup_ioctl(); 1529 1530 class_interface_unregister(&pcmcia_bus_interface); 1531 1532 bus_unregister(&pcmcia_bus_type); 1533 } 1534 module_exit(exit_pcmcia_bus); 1535 1536 1537 MODULE_ALIAS("ds"); 1538