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->driver_data 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 = p_dev->dev.driver_data; 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 = p_dev->dev.driver_data; 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 char path[FIRMWARE_NAME_MAX]; 832 int ret = -ENOMEM; 833 int no_funcs; 834 int old_funcs; 835 cistpl_longlink_mfc_t mfc; 836 837 if (!filename) 838 return -EINVAL; 839 840 ds_dev_dbg(1, &dev->dev, "trying to load CIS file %s\n", filename); 841 842 if (strlen(filename) > (FIRMWARE_NAME_MAX - 1)) { 843 dev_printk(KERN_WARNING, &dev->dev, 844 "pcmcia: CIS filename is too long [%s]\n", 845 filename); 846 return -EINVAL; 847 } 848 849 snprintf(path, sizeof(path), "%s", filename); 850 851 if (request_firmware(&fw, path, &dev->dev) == 0) { 852 if (fw->size >= CISTPL_MAX_CIS_SIZE) { 853 ret = -EINVAL; 854 dev_printk(KERN_ERR, &dev->dev, 855 "pcmcia: CIS override is too big\n"); 856 goto release; 857 } 858 859 if (!pcmcia_replace_cis(s, fw->data, fw->size)) 860 ret = 0; 861 else { 862 dev_printk(KERN_ERR, &dev->dev, 863 "pcmcia: CIS override failed\n"); 864 goto release; 865 } 866 867 868 /* update information */ 869 pcmcia_device_query(dev); 870 871 /* does this cis override add or remove functions? */ 872 old_funcs = s->functions; 873 874 if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC, &mfc)) 875 no_funcs = mfc.nfn; 876 else 877 no_funcs = 1; 878 s->functions = no_funcs; 879 880 if (old_funcs > no_funcs) 881 pcmcia_card_remove(s, dev); 882 else if (no_funcs > old_funcs) 883 pcmcia_add_device_later(s, 1); 884 } 885 release: 886 release_firmware(fw); 887 888 return (ret); 889 } 890 891 #else /* !CONFIG_PCMCIA_LOAD_CIS */ 892 893 static inline int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename) 894 { 895 return -ENODEV; 896 } 897 898 #endif 899 900 901 static inline int pcmcia_devmatch(struct pcmcia_device *dev, 902 struct pcmcia_device_id *did) 903 { 904 if (did->match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID) { 905 if ((!dev->has_manf_id) || (dev->manf_id != did->manf_id)) 906 return 0; 907 } 908 909 if (did->match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID) { 910 if ((!dev->has_card_id) || (dev->card_id != did->card_id)) 911 return 0; 912 } 913 914 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION) { 915 if (dev->func != did->function) 916 return 0; 917 } 918 919 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1) { 920 if (!dev->prod_id[0]) 921 return 0; 922 if (strcmp(did->prod_id[0], dev->prod_id[0])) 923 return 0; 924 } 925 926 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2) { 927 if (!dev->prod_id[1]) 928 return 0; 929 if (strcmp(did->prod_id[1], dev->prod_id[1])) 930 return 0; 931 } 932 933 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3) { 934 if (!dev->prod_id[2]) 935 return 0; 936 if (strcmp(did->prod_id[2], dev->prod_id[2])) 937 return 0; 938 } 939 940 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4) { 941 if (!dev->prod_id[3]) 942 return 0; 943 if (strcmp(did->prod_id[3], dev->prod_id[3])) 944 return 0; 945 } 946 947 if (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) { 948 if (dev->device_no != did->device_no) 949 return 0; 950 } 951 952 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID) { 953 if ((!dev->has_func_id) || (dev->func_id != did->func_id)) 954 return 0; 955 956 /* if this is a pseudo-multi-function device, 957 * we need explicit matches */ 958 if (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) 959 return 0; 960 if (dev->device_no) 961 return 0; 962 963 /* also, FUNC_ID matching needs to be activated by userspace 964 * after it has re-checked that there is no possible module 965 * with a prod_id/manf_id/card_id match. 966 */ 967 ds_dev_dbg(0, &dev->dev, 968 "skipping FUNC_ID match until userspace interaction\n"); 969 if (!dev->allow_func_id_match) 970 return 0; 971 } 972 973 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FAKE_CIS) { 974 ds_dev_dbg(0, &dev->dev, "device needs a fake CIS\n"); 975 if (!dev->socket->fake_cis) 976 pcmcia_load_firmware(dev, did->cisfile); 977 978 if (!dev->socket->fake_cis) 979 return 0; 980 } 981 982 if (did->match_flags & PCMCIA_DEV_ID_MATCH_ANONYMOUS) { 983 int i; 984 for (i=0; i<4; i++) 985 if (dev->prod_id[i]) 986 return 0; 987 if (dev->has_manf_id || dev->has_card_id || dev->has_func_id) 988 return 0; 989 } 990 991 dev->dev.driver_data = (void *) did; 992 993 return 1; 994 } 995 996 997 static int pcmcia_bus_match(struct device * dev, struct device_driver * drv) { 998 struct pcmcia_device * p_dev = to_pcmcia_dev(dev); 999 struct pcmcia_driver * p_drv = to_pcmcia_drv(drv); 1000 struct pcmcia_device_id *did = p_drv->id_table; 1001 struct pcmcia_dynid *dynid; 1002 1003 /* match dynamic devices first */ 1004 spin_lock(&p_drv->dynids.lock); 1005 list_for_each_entry(dynid, &p_drv->dynids.list, node) { 1006 ds_dev_dbg(3, dev, "trying to match to %s\n", drv->name); 1007 if (pcmcia_devmatch(p_dev, &dynid->id)) { 1008 ds_dev_dbg(0, dev, "matched to %s\n", drv->name); 1009 spin_unlock(&p_drv->dynids.lock); 1010 return 1; 1011 } 1012 } 1013 spin_unlock(&p_drv->dynids.lock); 1014 1015 #ifdef CONFIG_PCMCIA_IOCTL 1016 /* matching by cardmgr */ 1017 if (p_dev->cardmgr == p_drv) { 1018 ds_dev_dbg(0, dev, "cardmgr matched to %s\n", drv->name); 1019 return 1; 1020 } 1021 #endif 1022 1023 while (did && did->match_flags) { 1024 ds_dev_dbg(3, dev, "trying to match to %s\n", drv->name); 1025 if (pcmcia_devmatch(p_dev, did)) { 1026 ds_dev_dbg(0, dev, "matched to %s\n", drv->name); 1027 return 1; 1028 } 1029 did++; 1030 } 1031 1032 return 0; 1033 } 1034 1035 #ifdef CONFIG_HOTPLUG 1036 1037 static int pcmcia_bus_uevent(struct device *dev, struct kobj_uevent_env *env) 1038 { 1039 struct pcmcia_device *p_dev; 1040 int i; 1041 u32 hash[4] = { 0, 0, 0, 0}; 1042 1043 if (!dev) 1044 return -ENODEV; 1045 1046 p_dev = to_pcmcia_dev(dev); 1047 1048 /* calculate hashes */ 1049 for (i=0; i<4; i++) { 1050 if (!p_dev->prod_id[i]) 1051 continue; 1052 hash[i] = crc32(0, p_dev->prod_id[i], strlen(p_dev->prod_id[i])); 1053 } 1054 1055 if (add_uevent_var(env, "SOCKET_NO=%u", p_dev->socket->sock)) 1056 return -ENOMEM; 1057 1058 if (add_uevent_var(env, "DEVICE_NO=%02X", p_dev->device_no)) 1059 return -ENOMEM; 1060 1061 if (add_uevent_var(env, "MODALIAS=pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X" 1062 "pa%08Xpb%08Xpc%08Xpd%08X", 1063 p_dev->has_manf_id ? p_dev->manf_id : 0, 1064 p_dev->has_card_id ? p_dev->card_id : 0, 1065 p_dev->has_func_id ? p_dev->func_id : 0, 1066 p_dev->func, 1067 p_dev->device_no, 1068 hash[0], 1069 hash[1], 1070 hash[2], 1071 hash[3])) 1072 return -ENOMEM; 1073 1074 return 0; 1075 } 1076 1077 #else 1078 1079 static int pcmcia_bus_uevent(struct device *dev, struct kobj_uevent_env *env) 1080 { 1081 return -ENODEV; 1082 } 1083 1084 #endif 1085 1086 /************************ runtime PM support ***************************/ 1087 1088 static int pcmcia_dev_suspend(struct device *dev, pm_message_t state); 1089 static int pcmcia_dev_resume(struct device *dev); 1090 1091 static int runtime_suspend(struct device *dev) 1092 { 1093 int rc; 1094 1095 down(&dev->sem); 1096 rc = pcmcia_dev_suspend(dev, PMSG_SUSPEND); 1097 up(&dev->sem); 1098 return rc; 1099 } 1100 1101 static void runtime_resume(struct device *dev) 1102 { 1103 int rc; 1104 1105 down(&dev->sem); 1106 rc = pcmcia_dev_resume(dev); 1107 up(&dev->sem); 1108 } 1109 1110 /************************ per-device sysfs output ***************************/ 1111 1112 #define pcmcia_device_attr(field, test, format) \ 1113 static ssize_t field##_show (struct device *dev, struct device_attribute *attr, char *buf) \ 1114 { \ 1115 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \ 1116 return p_dev->test ? sprintf (buf, format, p_dev->field) : -ENODEV; \ 1117 } 1118 1119 #define pcmcia_device_stringattr(name, field) \ 1120 static ssize_t name##_show (struct device *dev, struct device_attribute *attr, char *buf) \ 1121 { \ 1122 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \ 1123 return p_dev->field ? sprintf (buf, "%s\n", p_dev->field) : -ENODEV; \ 1124 } 1125 1126 pcmcia_device_attr(func, socket, "0x%02x\n"); 1127 pcmcia_device_attr(func_id, has_func_id, "0x%02x\n"); 1128 pcmcia_device_attr(manf_id, has_manf_id, "0x%04x\n"); 1129 pcmcia_device_attr(card_id, has_card_id, "0x%04x\n"); 1130 pcmcia_device_stringattr(prod_id1, prod_id[0]); 1131 pcmcia_device_stringattr(prod_id2, prod_id[1]); 1132 pcmcia_device_stringattr(prod_id3, prod_id[2]); 1133 pcmcia_device_stringattr(prod_id4, prod_id[3]); 1134 1135 1136 static ssize_t pcmcia_show_pm_state(struct device *dev, struct device_attribute *attr, char *buf) 1137 { 1138 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); 1139 1140 if (p_dev->suspended) 1141 return sprintf(buf, "off\n"); 1142 else 1143 return sprintf(buf, "on\n"); 1144 } 1145 1146 static ssize_t pcmcia_store_pm_state(struct device *dev, struct device_attribute *attr, 1147 const char *buf, size_t count) 1148 { 1149 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); 1150 int ret = 0; 1151 1152 if (!count) 1153 return -EINVAL; 1154 1155 if ((!p_dev->suspended) && !strncmp(buf, "off", 3)) 1156 ret = runtime_suspend(dev); 1157 else if (p_dev->suspended && !strncmp(buf, "on", 2)) 1158 runtime_resume(dev); 1159 1160 return ret ? ret : count; 1161 } 1162 1163 1164 static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf) 1165 { 1166 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); 1167 int i; 1168 u32 hash[4] = { 0, 0, 0, 0}; 1169 1170 /* calculate hashes */ 1171 for (i=0; i<4; i++) { 1172 if (!p_dev->prod_id[i]) 1173 continue; 1174 hash[i] = crc32(0,p_dev->prod_id[i],strlen(p_dev->prod_id[i])); 1175 } 1176 return sprintf(buf, "pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X" 1177 "pa%08Xpb%08Xpc%08Xpd%08X\n", 1178 p_dev->has_manf_id ? p_dev->manf_id : 0, 1179 p_dev->has_card_id ? p_dev->card_id : 0, 1180 p_dev->has_func_id ? p_dev->func_id : 0, 1181 p_dev->func, p_dev->device_no, 1182 hash[0], hash[1], hash[2], hash[3]); 1183 } 1184 1185 static ssize_t pcmcia_store_allow_func_id_match(struct device *dev, 1186 struct device_attribute *attr, const char *buf, size_t count) 1187 { 1188 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); 1189 int ret; 1190 1191 if (!count) 1192 return -EINVAL; 1193 1194 mutex_lock(&p_dev->socket->skt_mutex); 1195 p_dev->allow_func_id_match = 1; 1196 mutex_unlock(&p_dev->socket->skt_mutex); 1197 1198 ret = bus_rescan_devices(&pcmcia_bus_type); 1199 if (ret) 1200 printk(KERN_INFO "pcmcia: bus_rescan_devices failed after " 1201 "allowing func_id matches\n"); 1202 1203 return count; 1204 } 1205 1206 static struct device_attribute pcmcia_dev_attrs[] = { 1207 __ATTR(function, 0444, func_show, NULL), 1208 __ATTR(pm_state, 0644, pcmcia_show_pm_state, pcmcia_store_pm_state), 1209 __ATTR_RO(func_id), 1210 __ATTR_RO(manf_id), 1211 __ATTR_RO(card_id), 1212 __ATTR_RO(prod_id1), 1213 __ATTR_RO(prod_id2), 1214 __ATTR_RO(prod_id3), 1215 __ATTR_RO(prod_id4), 1216 __ATTR_RO(modalias), 1217 __ATTR(allow_func_id_match, 0200, NULL, pcmcia_store_allow_func_id_match), 1218 __ATTR_NULL, 1219 }; 1220 1221 /* PM support, also needed for reset */ 1222 1223 static int pcmcia_dev_suspend(struct device * dev, pm_message_t state) 1224 { 1225 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); 1226 struct pcmcia_driver *p_drv = NULL; 1227 int ret = 0; 1228 1229 if (p_dev->suspended) 1230 return 0; 1231 1232 ds_dev_dbg(2, dev, "suspending\n"); 1233 1234 if (dev->driver) 1235 p_drv = to_pcmcia_drv(dev->driver); 1236 1237 if (!p_drv) 1238 goto out; 1239 1240 if (p_drv->suspend) { 1241 ret = p_drv->suspend(p_dev); 1242 if (ret) { 1243 dev_printk(KERN_ERR, dev, 1244 "pcmcia: device %s (driver %s) did " 1245 "not want to go to sleep (%d)\n", 1246 p_dev->devname, p_drv->drv.name, ret); 1247 goto out; 1248 } 1249 } 1250 1251 if (p_dev->device_no == p_dev->func) { 1252 ds_dev_dbg(2, dev, "releasing configuration\n"); 1253 pcmcia_release_configuration(p_dev); 1254 } 1255 1256 out: 1257 if (!ret) 1258 p_dev->suspended = 1; 1259 return ret; 1260 } 1261 1262 1263 static int pcmcia_dev_resume(struct device * dev) 1264 { 1265 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); 1266 struct pcmcia_driver *p_drv = NULL; 1267 int ret = 0; 1268 1269 if (!p_dev->suspended) 1270 return 0; 1271 1272 ds_dev_dbg(2, dev, "resuming\n"); 1273 1274 if (dev->driver) 1275 p_drv = to_pcmcia_drv(dev->driver); 1276 1277 if (!p_drv) 1278 goto out; 1279 1280 if (p_dev->device_no == p_dev->func) { 1281 ds_dev_dbg(2, dev, "requesting configuration\n"); 1282 ret = pcmcia_request_configuration(p_dev, &p_dev->conf); 1283 if (ret) 1284 goto out; 1285 } 1286 1287 if (p_drv->resume) 1288 ret = p_drv->resume(p_dev); 1289 1290 out: 1291 if (!ret) 1292 p_dev->suspended = 0; 1293 return ret; 1294 } 1295 1296 1297 static int pcmcia_bus_suspend_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 return runtime_suspend(dev); 1306 } 1307 1308 static int pcmcia_bus_resume_callback(struct device *dev, void * _data) 1309 { 1310 struct pcmcia_socket *skt = _data; 1311 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); 1312 1313 if (p_dev->socket != skt || !p_dev->suspended) 1314 return 0; 1315 1316 runtime_resume(dev); 1317 1318 return 0; 1319 } 1320 1321 static int pcmcia_bus_resume(struct pcmcia_socket *skt) 1322 { 1323 ds_dev_dbg(2, &skt->dev, "resuming socket %d\n", skt->sock); 1324 bus_for_each_dev(&pcmcia_bus_type, NULL, skt, pcmcia_bus_resume_callback); 1325 return 0; 1326 } 1327 1328 static int pcmcia_bus_suspend(struct pcmcia_socket *skt) 1329 { 1330 ds_dev_dbg(2, &skt->dev, "suspending socket %d\n", skt->sock); 1331 if (bus_for_each_dev(&pcmcia_bus_type, NULL, skt, 1332 pcmcia_bus_suspend_callback)) { 1333 pcmcia_bus_resume(skt); 1334 return -EIO; 1335 } 1336 return 0; 1337 } 1338 1339 1340 /*====================================================================== 1341 1342 The card status event handler. 1343 1344 ======================================================================*/ 1345 1346 /* Normally, the event is passed to individual drivers after 1347 * informing userspace. Only for CS_EVENT_CARD_REMOVAL this 1348 * is inversed to maintain historic compatibility. 1349 */ 1350 1351 static int ds_event(struct pcmcia_socket *skt, event_t event, int priority) 1352 { 1353 struct pcmcia_socket *s = pcmcia_get_socket(skt); 1354 1355 if (!s) { 1356 dev_printk(KERN_ERR, &skt->dev, 1357 "PCMCIA obtaining reference to socket " \ 1358 "failed, event 0x%x lost!\n", event); 1359 return -ENODEV; 1360 } 1361 1362 ds_dev_dbg(1, &skt->dev, "ds_event(0x%06x, %d, 0x%p)\n", 1363 event, priority, skt); 1364 1365 switch (event) { 1366 case CS_EVENT_CARD_REMOVAL: 1367 s->pcmcia_state.present = 0; 1368 pcmcia_card_remove(skt, NULL); 1369 handle_event(skt, event); 1370 break; 1371 1372 case CS_EVENT_CARD_INSERTION: 1373 s->pcmcia_state.present = 1; 1374 pcmcia_card_add(skt); 1375 handle_event(skt, event); 1376 break; 1377 1378 case CS_EVENT_EJECTION_REQUEST: 1379 break; 1380 1381 case CS_EVENT_PM_SUSPEND: 1382 case CS_EVENT_PM_RESUME: 1383 case CS_EVENT_RESET_PHYSICAL: 1384 case CS_EVENT_CARD_RESET: 1385 default: 1386 handle_event(skt, event); 1387 break; 1388 } 1389 1390 pcmcia_put_socket(s); 1391 1392 return 0; 1393 } /* ds_event */ 1394 1395 1396 struct pcmcia_device * pcmcia_dev_present(struct pcmcia_device *_p_dev) 1397 { 1398 struct pcmcia_device *p_dev; 1399 struct pcmcia_device *ret = NULL; 1400 1401 p_dev = pcmcia_get_dev(_p_dev); 1402 if (!p_dev) 1403 return NULL; 1404 1405 if (!p_dev->socket->pcmcia_state.present) 1406 goto out; 1407 1408 if (p_dev->_removed) 1409 goto out; 1410 1411 if (p_dev->suspended) 1412 goto out; 1413 1414 ret = p_dev; 1415 out: 1416 pcmcia_put_dev(p_dev); 1417 return ret; 1418 } 1419 EXPORT_SYMBOL(pcmcia_dev_present); 1420 1421 1422 static struct pcmcia_callback pcmcia_bus_callback = { 1423 .owner = THIS_MODULE, 1424 .event = ds_event, 1425 .requery = pcmcia_bus_rescan, 1426 .suspend = pcmcia_bus_suspend, 1427 .resume = pcmcia_bus_resume, 1428 }; 1429 1430 static int __devinit pcmcia_bus_add_socket(struct device *dev, 1431 struct class_interface *class_intf) 1432 { 1433 struct pcmcia_socket *socket = dev_get_drvdata(dev); 1434 int ret; 1435 1436 socket = pcmcia_get_socket(socket); 1437 if (!socket) { 1438 dev_printk(KERN_ERR, dev, 1439 "PCMCIA obtaining reference to socket failed\n"); 1440 return -ENODEV; 1441 } 1442 1443 /* 1444 * Ugly. But we want to wait for the socket threads to have started up. 1445 * We really should let the drivers themselves drive some of this.. 1446 */ 1447 msleep(250); 1448 1449 #ifdef CONFIG_PCMCIA_IOCTL 1450 init_waitqueue_head(&socket->queue); 1451 #endif 1452 INIT_LIST_HEAD(&socket->devices_list); 1453 INIT_WORK(&socket->device_add, pcmcia_delayed_add_device); 1454 memset(&socket->pcmcia_state, 0, sizeof(u8)); 1455 socket->device_count = 0; 1456 1457 ret = pccard_register_pcmcia(socket, &pcmcia_bus_callback); 1458 if (ret) { 1459 dev_printk(KERN_ERR, dev, "PCMCIA registration failed\n"); 1460 pcmcia_put_socket(socket); 1461 return (ret); 1462 } 1463 1464 return 0; 1465 } 1466 1467 static void pcmcia_bus_remove_socket(struct device *dev, 1468 struct class_interface *class_intf) 1469 { 1470 struct pcmcia_socket *socket = dev_get_drvdata(dev); 1471 1472 if (!socket) 1473 return; 1474 1475 socket->pcmcia_state.dead = 1; 1476 pccard_register_pcmcia(socket, NULL); 1477 1478 /* unregister any unbound devices */ 1479 mutex_lock(&socket->skt_mutex); 1480 pcmcia_card_remove(socket, NULL); 1481 mutex_unlock(&socket->skt_mutex); 1482 1483 pcmcia_put_socket(socket); 1484 1485 return; 1486 } 1487 1488 1489 /* the pcmcia_bus_interface is used to handle pcmcia socket devices */ 1490 static struct class_interface pcmcia_bus_interface __refdata = { 1491 .class = &pcmcia_socket_class, 1492 .add_dev = &pcmcia_bus_add_socket, 1493 .remove_dev = &pcmcia_bus_remove_socket, 1494 }; 1495 1496 1497 struct bus_type pcmcia_bus_type = { 1498 .name = "pcmcia", 1499 .uevent = pcmcia_bus_uevent, 1500 .match = pcmcia_bus_match, 1501 .dev_attrs = pcmcia_dev_attrs, 1502 .probe = pcmcia_device_probe, 1503 .remove = pcmcia_device_remove, 1504 .suspend = pcmcia_dev_suspend, 1505 .resume = pcmcia_dev_resume, 1506 }; 1507 1508 1509 static int __init init_pcmcia_bus(void) 1510 { 1511 int ret; 1512 1513 spin_lock_init(&pcmcia_dev_list_lock); 1514 1515 ret = bus_register(&pcmcia_bus_type); 1516 if (ret < 0) { 1517 printk(KERN_WARNING "pcmcia: bus_register error: %d\n", ret); 1518 return ret; 1519 } 1520 ret = class_interface_register(&pcmcia_bus_interface); 1521 if (ret < 0) { 1522 printk(KERN_WARNING 1523 "pcmcia: class_interface_register error: %d\n", ret); 1524 bus_unregister(&pcmcia_bus_type); 1525 return ret; 1526 } 1527 1528 pcmcia_setup_ioctl(); 1529 1530 return 0; 1531 } 1532 fs_initcall(init_pcmcia_bus); /* one level after subsys_initcall so that 1533 * pcmcia_socket_class is already registered */ 1534 1535 1536 static void __exit exit_pcmcia_bus(void) 1537 { 1538 pcmcia_cleanup_ioctl(); 1539 1540 class_interface_unregister(&pcmcia_bus_interface); 1541 1542 bus_unregister(&pcmcia_bus_type); 1543 } 1544 module_exit(exit_pcmcia_bus); 1545 1546 1547 MODULE_ALIAS("ds"); 1548