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 int bus_id_len; 626 627 s = pcmcia_get_socket(s); 628 if (!s) 629 return NULL; 630 631 mutex_lock(&device_add_lock); 632 633 ds_dbg(3, "adding device to %d, function %d\n", s->sock, function); 634 635 /* max of 4 devices per card */ 636 if (s->device_count == 4) 637 goto err_put; 638 639 p_dev = kzalloc(sizeof(struct pcmcia_device), GFP_KERNEL); 640 if (!p_dev) 641 goto err_put; 642 643 p_dev->socket = s; 644 p_dev->device_no = (s->device_count++); 645 p_dev->func = function; 646 647 p_dev->dev.bus = &pcmcia_bus_type; 648 p_dev->dev.parent = s->dev.parent; 649 p_dev->dev.release = pcmcia_release_dev; 650 /* by default don't allow DMA */ 651 p_dev->dma_mask = DMA_MASK_NONE; 652 p_dev->dev.dma_mask = &p_dev->dma_mask; 653 bus_id_len = sprintf (p_dev->dev.bus_id, "%d.%d", p_dev->socket->sock, p_dev->device_no); 654 655 p_dev->devname = kmalloc(6 + bus_id_len + 1, GFP_KERNEL); 656 if (!p_dev->devname) 657 goto err_free; 658 sprintf (p_dev->devname, "pcmcia%s", p_dev->dev.bus_id); 659 ds_dev_dbg(3, &p_dev->dev, "devname is %s\n", p_dev->devname); 660 661 spin_lock_irqsave(&pcmcia_dev_list_lock, flags); 662 663 /* 664 * p_dev->function_config must be the same for all card functions. 665 * Note that this is serialized by the device_add_lock, so that 666 * only one such struct will be created. 667 */ 668 list_for_each_entry(tmp_dev, &s->devices_list, socket_device_list) 669 if (p_dev->func == tmp_dev->func) { 670 p_dev->function_config = tmp_dev->function_config; 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, BIND_FN_ALL, &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 char path[FIRMWARE_NAME_MAX]; 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 (strlen(filename) > (FIRMWARE_NAME_MAX - 1)) { 842 dev_printk(KERN_WARNING, &dev->dev, 843 "pcmcia: CIS filename is too long [%s]\n", 844 filename); 845 return -EINVAL; 846 } 847 848 snprintf(path, sizeof(path), "%s", filename); 849 850 if (request_firmware(&fw, path, &dev->dev) == 0) { 851 if (fw->size >= CISTPL_MAX_CIS_SIZE) { 852 ret = -EINVAL; 853 dev_printk(KERN_ERR, &dev->dev, 854 "pcmcia: CIS override is too big\n"); 855 goto release; 856 } 857 858 if (!pcmcia_replace_cis(s, fw->data, fw->size)) 859 ret = 0; 860 else { 861 dev_printk(KERN_ERR, &dev->dev, 862 "pcmcia: CIS override failed\n"); 863 goto release; 864 } 865 866 867 /* update information */ 868 pcmcia_device_query(dev); 869 870 /* does this cis override add or remove functions? */ 871 old_funcs = s->functions; 872 873 if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC, &mfc)) 874 no_funcs = mfc.nfn; 875 else 876 no_funcs = 1; 877 s->functions = no_funcs; 878 879 if (old_funcs > no_funcs) 880 pcmcia_card_remove(s, dev); 881 else if (no_funcs > old_funcs) 882 pcmcia_add_device_later(s, 1); 883 } 884 release: 885 release_firmware(fw); 886 887 return (ret); 888 } 889 890 #else /* !CONFIG_PCMCIA_LOAD_CIS */ 891 892 static inline int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename) 893 { 894 return -ENODEV; 895 } 896 897 #endif 898 899 900 static inline int pcmcia_devmatch(struct pcmcia_device *dev, 901 struct pcmcia_device_id *did) 902 { 903 if (did->match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID) { 904 if ((!dev->has_manf_id) || (dev->manf_id != did->manf_id)) 905 return 0; 906 } 907 908 if (did->match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID) { 909 if ((!dev->has_card_id) || (dev->card_id != did->card_id)) 910 return 0; 911 } 912 913 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION) { 914 if (dev->func != did->function) 915 return 0; 916 } 917 918 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1) { 919 if (!dev->prod_id[0]) 920 return 0; 921 if (strcmp(did->prod_id[0], dev->prod_id[0])) 922 return 0; 923 } 924 925 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2) { 926 if (!dev->prod_id[1]) 927 return 0; 928 if (strcmp(did->prod_id[1], dev->prod_id[1])) 929 return 0; 930 } 931 932 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3) { 933 if (!dev->prod_id[2]) 934 return 0; 935 if (strcmp(did->prod_id[2], dev->prod_id[2])) 936 return 0; 937 } 938 939 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4) { 940 if (!dev->prod_id[3]) 941 return 0; 942 if (strcmp(did->prod_id[3], dev->prod_id[3])) 943 return 0; 944 } 945 946 if (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) { 947 if (dev->device_no != did->device_no) 948 return 0; 949 } 950 951 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID) { 952 if ((!dev->has_func_id) || (dev->func_id != did->func_id)) 953 return 0; 954 955 /* if this is a pseudo-multi-function device, 956 * we need explicit matches */ 957 if (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) 958 return 0; 959 if (dev->device_no) 960 return 0; 961 962 /* also, FUNC_ID matching needs to be activated by userspace 963 * after it has re-checked that there is no possible module 964 * with a prod_id/manf_id/card_id match. 965 */ 966 ds_dev_dbg(0, &dev->dev, 967 "skipping FUNC_ID match until userspace interaction\n"); 968 if (!dev->allow_func_id_match) 969 return 0; 970 } 971 972 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FAKE_CIS) { 973 ds_dev_dbg(0, &dev->dev, "device needs a fake CIS\n"); 974 if (!dev->socket->fake_cis) 975 pcmcia_load_firmware(dev, did->cisfile); 976 977 if (!dev->socket->fake_cis) 978 return 0; 979 } 980 981 if (did->match_flags & PCMCIA_DEV_ID_MATCH_ANONYMOUS) { 982 int i; 983 for (i=0; i<4; i++) 984 if (dev->prod_id[i]) 985 return 0; 986 if (dev->has_manf_id || dev->has_card_id || dev->has_func_id) 987 return 0; 988 } 989 990 dev->dev.driver_data = (void *) did; 991 992 return 1; 993 } 994 995 996 static int pcmcia_bus_match(struct device * dev, struct device_driver * drv) { 997 struct pcmcia_device * p_dev = to_pcmcia_dev(dev); 998 struct pcmcia_driver * p_drv = to_pcmcia_drv(drv); 999 struct pcmcia_device_id *did = p_drv->id_table; 1000 struct pcmcia_dynid *dynid; 1001 1002 /* match dynamic devices first */ 1003 spin_lock(&p_drv->dynids.lock); 1004 list_for_each_entry(dynid, &p_drv->dynids.list, node) { 1005 ds_dev_dbg(3, dev, "trying to match to %s\n", drv->name); 1006 if (pcmcia_devmatch(p_dev, &dynid->id)) { 1007 ds_dev_dbg(0, dev, "matched to %s\n", drv->name); 1008 spin_unlock(&p_drv->dynids.lock); 1009 return 1; 1010 } 1011 } 1012 spin_unlock(&p_drv->dynids.lock); 1013 1014 #ifdef CONFIG_PCMCIA_IOCTL 1015 /* matching by cardmgr */ 1016 if (p_dev->cardmgr == p_drv) { 1017 ds_dev_dbg(0, dev, "cardmgr matched to %s\n", drv->name); 1018 return 1; 1019 } 1020 #endif 1021 1022 while (did && did->match_flags) { 1023 ds_dev_dbg(3, dev, "trying to match to %s\n", drv->name); 1024 if (pcmcia_devmatch(p_dev, did)) { 1025 ds_dev_dbg(0, dev, "matched to %s\n", drv->name); 1026 return 1; 1027 } 1028 did++; 1029 } 1030 1031 return 0; 1032 } 1033 1034 #ifdef CONFIG_HOTPLUG 1035 1036 static int pcmcia_bus_uevent(struct device *dev, struct kobj_uevent_env *env) 1037 { 1038 struct pcmcia_device *p_dev; 1039 int i; 1040 u32 hash[4] = { 0, 0, 0, 0}; 1041 1042 if (!dev) 1043 return -ENODEV; 1044 1045 p_dev = to_pcmcia_dev(dev); 1046 1047 /* calculate hashes */ 1048 for (i=0; i<4; i++) { 1049 if (!p_dev->prod_id[i]) 1050 continue; 1051 hash[i] = crc32(0, p_dev->prod_id[i], strlen(p_dev->prod_id[i])); 1052 } 1053 1054 if (add_uevent_var(env, "SOCKET_NO=%u", p_dev->socket->sock)) 1055 return -ENOMEM; 1056 1057 if (add_uevent_var(env, "DEVICE_NO=%02X", p_dev->device_no)) 1058 return -ENOMEM; 1059 1060 if (add_uevent_var(env, "MODALIAS=pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X" 1061 "pa%08Xpb%08Xpc%08Xpd%08X", 1062 p_dev->has_manf_id ? p_dev->manf_id : 0, 1063 p_dev->has_card_id ? p_dev->card_id : 0, 1064 p_dev->has_func_id ? p_dev->func_id : 0, 1065 p_dev->func, 1066 p_dev->device_no, 1067 hash[0], 1068 hash[1], 1069 hash[2], 1070 hash[3])) 1071 return -ENOMEM; 1072 1073 return 0; 1074 } 1075 1076 #else 1077 1078 static int pcmcia_bus_uevent(struct device *dev, struct kobj_uevent_env *env) 1079 { 1080 return -ENODEV; 1081 } 1082 1083 #endif 1084 1085 /************************ runtime PM support ***************************/ 1086 1087 static int pcmcia_dev_suspend(struct device *dev, pm_message_t state); 1088 static int pcmcia_dev_resume(struct device *dev); 1089 1090 static int runtime_suspend(struct device *dev) 1091 { 1092 int rc; 1093 1094 down(&dev->sem); 1095 rc = pcmcia_dev_suspend(dev, PMSG_SUSPEND); 1096 up(&dev->sem); 1097 return rc; 1098 } 1099 1100 static void runtime_resume(struct device *dev) 1101 { 1102 int rc; 1103 1104 down(&dev->sem); 1105 rc = pcmcia_dev_resume(dev); 1106 up(&dev->sem); 1107 } 1108 1109 /************************ per-device sysfs output ***************************/ 1110 1111 #define pcmcia_device_attr(field, test, format) \ 1112 static ssize_t field##_show (struct device *dev, struct device_attribute *attr, char *buf) \ 1113 { \ 1114 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \ 1115 return p_dev->test ? sprintf (buf, format, p_dev->field) : -ENODEV; \ 1116 } 1117 1118 #define pcmcia_device_stringattr(name, field) \ 1119 static ssize_t name##_show (struct device *dev, struct device_attribute *attr, char *buf) \ 1120 { \ 1121 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \ 1122 return p_dev->field ? sprintf (buf, "%s\n", p_dev->field) : -ENODEV; \ 1123 } 1124 1125 pcmcia_device_attr(func, socket, "0x%02x\n"); 1126 pcmcia_device_attr(func_id, has_func_id, "0x%02x\n"); 1127 pcmcia_device_attr(manf_id, has_manf_id, "0x%04x\n"); 1128 pcmcia_device_attr(card_id, has_card_id, "0x%04x\n"); 1129 pcmcia_device_stringattr(prod_id1, prod_id[0]); 1130 pcmcia_device_stringattr(prod_id2, prod_id[1]); 1131 pcmcia_device_stringattr(prod_id3, prod_id[2]); 1132 pcmcia_device_stringattr(prod_id4, prod_id[3]); 1133 1134 1135 static ssize_t pcmcia_show_pm_state(struct device *dev, struct device_attribute *attr, char *buf) 1136 { 1137 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); 1138 1139 if (p_dev->suspended) 1140 return sprintf(buf, "off\n"); 1141 else 1142 return sprintf(buf, "on\n"); 1143 } 1144 1145 static ssize_t pcmcia_store_pm_state(struct device *dev, struct device_attribute *attr, 1146 const char *buf, size_t count) 1147 { 1148 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); 1149 int ret = 0; 1150 1151 if (!count) 1152 return -EINVAL; 1153 1154 if ((!p_dev->suspended) && !strncmp(buf, "off", 3)) 1155 ret = runtime_suspend(dev); 1156 else if (p_dev->suspended && !strncmp(buf, "on", 2)) 1157 runtime_resume(dev); 1158 1159 return ret ? ret : count; 1160 } 1161 1162 1163 static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf) 1164 { 1165 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); 1166 int i; 1167 u32 hash[4] = { 0, 0, 0, 0}; 1168 1169 /* calculate hashes */ 1170 for (i=0; i<4; i++) { 1171 if (!p_dev->prod_id[i]) 1172 continue; 1173 hash[i] = crc32(0,p_dev->prod_id[i],strlen(p_dev->prod_id[i])); 1174 } 1175 return sprintf(buf, "pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X" 1176 "pa%08Xpb%08Xpc%08Xpd%08X\n", 1177 p_dev->has_manf_id ? p_dev->manf_id : 0, 1178 p_dev->has_card_id ? p_dev->card_id : 0, 1179 p_dev->has_func_id ? p_dev->func_id : 0, 1180 p_dev->func, p_dev->device_no, 1181 hash[0], hash[1], hash[2], hash[3]); 1182 } 1183 1184 static ssize_t pcmcia_store_allow_func_id_match(struct device *dev, 1185 struct device_attribute *attr, const char *buf, size_t count) 1186 { 1187 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); 1188 int ret; 1189 1190 if (!count) 1191 return -EINVAL; 1192 1193 mutex_lock(&p_dev->socket->skt_mutex); 1194 p_dev->allow_func_id_match = 1; 1195 mutex_unlock(&p_dev->socket->skt_mutex); 1196 1197 ret = bus_rescan_devices(&pcmcia_bus_type); 1198 if (ret) 1199 printk(KERN_INFO "pcmcia: bus_rescan_devices failed after " 1200 "allowing func_id matches\n"); 1201 1202 return count; 1203 } 1204 1205 static struct device_attribute pcmcia_dev_attrs[] = { 1206 __ATTR(function, 0444, func_show, NULL), 1207 __ATTR(pm_state, 0644, pcmcia_show_pm_state, pcmcia_store_pm_state), 1208 __ATTR_RO(func_id), 1209 __ATTR_RO(manf_id), 1210 __ATTR_RO(card_id), 1211 __ATTR_RO(prod_id1), 1212 __ATTR_RO(prod_id2), 1213 __ATTR_RO(prod_id3), 1214 __ATTR_RO(prod_id4), 1215 __ATTR_RO(modalias), 1216 __ATTR(allow_func_id_match, 0200, NULL, pcmcia_store_allow_func_id_match), 1217 __ATTR_NULL, 1218 }; 1219 1220 /* PM support, also needed for reset */ 1221 1222 static int pcmcia_dev_suspend(struct device * dev, pm_message_t state) 1223 { 1224 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); 1225 struct pcmcia_driver *p_drv = NULL; 1226 int ret = 0; 1227 1228 if (p_dev->suspended) 1229 return 0; 1230 1231 ds_dev_dbg(2, dev, "suspending\n"); 1232 1233 if (dev->driver) 1234 p_drv = to_pcmcia_drv(dev->driver); 1235 1236 if (!p_drv) 1237 goto out; 1238 1239 if (p_drv->suspend) { 1240 ret = p_drv->suspend(p_dev); 1241 if (ret) { 1242 dev_printk(KERN_ERR, dev, 1243 "pcmcia: device %s (driver %s) did " 1244 "not want to go to sleep (%d)\n", 1245 p_dev->devname, p_drv->drv.name, ret); 1246 goto out; 1247 } 1248 } 1249 1250 if (p_dev->device_no == p_dev->func) { 1251 ds_dev_dbg(2, dev, "releasing configuration\n"); 1252 pcmcia_release_configuration(p_dev); 1253 } 1254 1255 out: 1256 if (!ret) 1257 p_dev->suspended = 1; 1258 return ret; 1259 } 1260 1261 1262 static int pcmcia_dev_resume(struct device * dev) 1263 { 1264 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); 1265 struct pcmcia_driver *p_drv = NULL; 1266 int ret = 0; 1267 1268 if (!p_dev->suspended) 1269 return 0; 1270 1271 ds_dev_dbg(2, dev, "resuming\n"); 1272 1273 if (dev->driver) 1274 p_drv = to_pcmcia_drv(dev->driver); 1275 1276 if (!p_drv) 1277 goto out; 1278 1279 if (p_dev->device_no == p_dev->func) { 1280 ds_dev_dbg(2, dev, "requesting configuration\n"); 1281 ret = pcmcia_request_configuration(p_dev, &p_dev->conf); 1282 if (ret) 1283 goto out; 1284 } 1285 1286 if (p_drv->resume) 1287 ret = p_drv->resume(p_dev); 1288 1289 out: 1290 if (!ret) 1291 p_dev->suspended = 0; 1292 return ret; 1293 } 1294 1295 1296 static int pcmcia_bus_suspend_callback(struct device *dev, void * _data) 1297 { 1298 struct pcmcia_socket *skt = _data; 1299 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); 1300 1301 if (p_dev->socket != skt || p_dev->suspended) 1302 return 0; 1303 1304 return runtime_suspend(dev); 1305 } 1306 1307 static int pcmcia_bus_resume_callback(struct device *dev, void * _data) 1308 { 1309 struct pcmcia_socket *skt = _data; 1310 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); 1311 1312 if (p_dev->socket != skt || !p_dev->suspended) 1313 return 0; 1314 1315 runtime_resume(dev); 1316 1317 return 0; 1318 } 1319 1320 static int pcmcia_bus_resume(struct pcmcia_socket *skt) 1321 { 1322 ds_dev_dbg(2, &skt->dev, "resuming socket %d\n", skt->sock); 1323 bus_for_each_dev(&pcmcia_bus_type, NULL, skt, pcmcia_bus_resume_callback); 1324 return 0; 1325 } 1326 1327 static int pcmcia_bus_suspend(struct pcmcia_socket *skt) 1328 { 1329 ds_dev_dbg(2, &skt->dev, "suspending socket %d\n", skt->sock); 1330 if (bus_for_each_dev(&pcmcia_bus_type, NULL, skt, 1331 pcmcia_bus_suspend_callback)) { 1332 pcmcia_bus_resume(skt); 1333 return -EIO; 1334 } 1335 return 0; 1336 } 1337 1338 1339 /*====================================================================== 1340 1341 The card status event handler. 1342 1343 ======================================================================*/ 1344 1345 /* Normally, the event is passed to individual drivers after 1346 * informing userspace. Only for CS_EVENT_CARD_REMOVAL this 1347 * is inversed to maintain historic compatibility. 1348 */ 1349 1350 static int ds_event(struct pcmcia_socket *skt, event_t event, int priority) 1351 { 1352 struct pcmcia_socket *s = pcmcia_get_socket(skt); 1353 1354 if (!s) { 1355 dev_printk(KERN_ERR, &skt->dev, 1356 "PCMCIA obtaining reference to socket " \ 1357 "failed, event 0x%x lost!\n", event); 1358 return -ENODEV; 1359 } 1360 1361 ds_dev_dbg(1, &skt->dev, "ds_event(0x%06x, %d, 0x%p)\n", 1362 event, priority, skt); 1363 1364 switch (event) { 1365 case CS_EVENT_CARD_REMOVAL: 1366 s->pcmcia_state.present = 0; 1367 pcmcia_card_remove(skt, NULL); 1368 handle_event(skt, event); 1369 break; 1370 1371 case CS_EVENT_CARD_INSERTION: 1372 s->pcmcia_state.present = 1; 1373 pcmcia_card_add(skt); 1374 handle_event(skt, event); 1375 break; 1376 1377 case CS_EVENT_EJECTION_REQUEST: 1378 break; 1379 1380 case CS_EVENT_PM_SUSPEND: 1381 case CS_EVENT_PM_RESUME: 1382 case CS_EVENT_RESET_PHYSICAL: 1383 case CS_EVENT_CARD_RESET: 1384 default: 1385 handle_event(skt, event); 1386 break; 1387 } 1388 1389 pcmcia_put_socket(s); 1390 1391 return 0; 1392 } /* ds_event */ 1393 1394 1395 struct pcmcia_device * pcmcia_dev_present(struct pcmcia_device *_p_dev) 1396 { 1397 struct pcmcia_device *p_dev; 1398 struct pcmcia_device *ret = NULL; 1399 1400 p_dev = pcmcia_get_dev(_p_dev); 1401 if (!p_dev) 1402 return NULL; 1403 1404 if (!p_dev->socket->pcmcia_state.present) 1405 goto out; 1406 1407 if (p_dev->_removed) 1408 goto out; 1409 1410 if (p_dev->suspended) 1411 goto out; 1412 1413 ret = p_dev; 1414 out: 1415 pcmcia_put_dev(p_dev); 1416 return ret; 1417 } 1418 EXPORT_SYMBOL(pcmcia_dev_present); 1419 1420 1421 static struct pcmcia_callback pcmcia_bus_callback = { 1422 .owner = THIS_MODULE, 1423 .event = ds_event, 1424 .requery = pcmcia_bus_rescan, 1425 .suspend = pcmcia_bus_suspend, 1426 .resume = pcmcia_bus_resume, 1427 }; 1428 1429 static int __devinit pcmcia_bus_add_socket(struct device *dev, 1430 struct class_interface *class_intf) 1431 { 1432 struct pcmcia_socket *socket = dev_get_drvdata(dev); 1433 int ret; 1434 1435 socket = pcmcia_get_socket(socket); 1436 if (!socket) { 1437 dev_printk(KERN_ERR, dev, 1438 "PCMCIA obtaining reference to socket failed\n"); 1439 return -ENODEV; 1440 } 1441 1442 /* 1443 * Ugly. But we want to wait for the socket threads to have started up. 1444 * We really should let the drivers themselves drive some of this.. 1445 */ 1446 msleep(250); 1447 1448 #ifdef CONFIG_PCMCIA_IOCTL 1449 init_waitqueue_head(&socket->queue); 1450 #endif 1451 INIT_LIST_HEAD(&socket->devices_list); 1452 INIT_WORK(&socket->device_add, pcmcia_delayed_add_device); 1453 memset(&socket->pcmcia_state, 0, sizeof(u8)); 1454 socket->device_count = 0; 1455 1456 ret = pccard_register_pcmcia(socket, &pcmcia_bus_callback); 1457 if (ret) { 1458 dev_printk(KERN_ERR, dev, "PCMCIA registration failed\n"); 1459 pcmcia_put_socket(socket); 1460 return (ret); 1461 } 1462 1463 return 0; 1464 } 1465 1466 static void pcmcia_bus_remove_socket(struct device *dev, 1467 struct class_interface *class_intf) 1468 { 1469 struct pcmcia_socket *socket = dev_get_drvdata(dev); 1470 1471 if (!socket) 1472 return; 1473 1474 socket->pcmcia_state.dead = 1; 1475 pccard_register_pcmcia(socket, NULL); 1476 1477 /* unregister any unbound devices */ 1478 mutex_lock(&socket->skt_mutex); 1479 pcmcia_card_remove(socket, NULL); 1480 mutex_unlock(&socket->skt_mutex); 1481 1482 pcmcia_put_socket(socket); 1483 1484 return; 1485 } 1486 1487 1488 /* the pcmcia_bus_interface is used to handle pcmcia socket devices */ 1489 static struct class_interface pcmcia_bus_interface __refdata = { 1490 .class = &pcmcia_socket_class, 1491 .add_dev = &pcmcia_bus_add_socket, 1492 .remove_dev = &pcmcia_bus_remove_socket, 1493 }; 1494 1495 1496 struct bus_type pcmcia_bus_type = { 1497 .name = "pcmcia", 1498 .uevent = pcmcia_bus_uevent, 1499 .match = pcmcia_bus_match, 1500 .dev_attrs = pcmcia_dev_attrs, 1501 .probe = pcmcia_device_probe, 1502 .remove = pcmcia_device_remove, 1503 .suspend = pcmcia_dev_suspend, 1504 .resume = pcmcia_dev_resume, 1505 }; 1506 1507 1508 static int __init init_pcmcia_bus(void) 1509 { 1510 int ret; 1511 1512 spin_lock_init(&pcmcia_dev_list_lock); 1513 1514 ret = bus_register(&pcmcia_bus_type); 1515 if (ret < 0) { 1516 printk(KERN_WARNING "pcmcia: bus_register error: %d\n", ret); 1517 return ret; 1518 } 1519 ret = class_interface_register(&pcmcia_bus_interface); 1520 if (ret < 0) { 1521 printk(KERN_WARNING 1522 "pcmcia: class_interface_register error: %d\n", ret); 1523 bus_unregister(&pcmcia_bus_type); 1524 return ret; 1525 } 1526 1527 pcmcia_setup_ioctl(); 1528 1529 return 0; 1530 } 1531 fs_initcall(init_pcmcia_bus); /* one level after subsys_initcall so that 1532 * pcmcia_socket_class is already registered */ 1533 1534 1535 static void __exit exit_pcmcia_bus(void) 1536 { 1537 pcmcia_cleanup_ioctl(); 1538 1539 class_interface_unregister(&pcmcia_bus_interface); 1540 1541 bus_unregister(&pcmcia_bus_type); 1542 } 1543 module_exit(exit_pcmcia_bus); 1544 1545 1546 MODULE_ALIAS("ds"); 1547