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