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 - 2005 Dominik Brodowski 14 */ 15 16 #include <linux/config.h> 17 #include <linux/kernel.h> 18 #include <linux/module.h> 19 #include <linux/init.h> 20 #include <linux/errno.h> 21 #include <linux/list.h> 22 #include <linux/delay.h> 23 #include <linux/workqueue.h> 24 #include <linux/crc32.h> 25 #include <linux/firmware.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 static int unbind_request(struct pcmcia_socket *s); 61 62 /*====================================================================*/ 63 64 /* code which was in cs.c before */ 65 66 /* String tables for error messages */ 67 68 typedef struct lookup_t { 69 int key; 70 char *msg; 71 } lookup_t; 72 73 static const lookup_t error_table[] = { 74 { CS_SUCCESS, "Operation succeeded" }, 75 { CS_BAD_ADAPTER, "Bad adapter" }, 76 { CS_BAD_ATTRIBUTE, "Bad attribute", }, 77 { CS_BAD_BASE, "Bad base address" }, 78 { CS_BAD_EDC, "Bad EDC" }, 79 { CS_BAD_IRQ, "Bad IRQ" }, 80 { CS_BAD_OFFSET, "Bad offset" }, 81 { CS_BAD_PAGE, "Bad page number" }, 82 { CS_READ_FAILURE, "Read failure" }, 83 { CS_BAD_SIZE, "Bad size" }, 84 { CS_BAD_SOCKET, "Bad socket" }, 85 { CS_BAD_TYPE, "Bad type" }, 86 { CS_BAD_VCC, "Bad Vcc" }, 87 { CS_BAD_VPP, "Bad Vpp" }, 88 { CS_BAD_WINDOW, "Bad window" }, 89 { CS_WRITE_FAILURE, "Write failure" }, 90 { CS_NO_CARD, "No card present" }, 91 { CS_UNSUPPORTED_FUNCTION, "Usupported function" }, 92 { CS_UNSUPPORTED_MODE, "Unsupported mode" }, 93 { CS_BAD_SPEED, "Bad speed" }, 94 { CS_BUSY, "Resource busy" }, 95 { CS_GENERAL_FAILURE, "General failure" }, 96 { CS_WRITE_PROTECTED, "Write protected" }, 97 { CS_BAD_ARG_LENGTH, "Bad argument length" }, 98 { CS_BAD_ARGS, "Bad arguments" }, 99 { CS_CONFIGURATION_LOCKED, "Configuration locked" }, 100 { CS_IN_USE, "Resource in use" }, 101 { CS_NO_MORE_ITEMS, "No more items" }, 102 { CS_OUT_OF_RESOURCE, "Out of resource" }, 103 { CS_BAD_HANDLE, "Bad handle" }, 104 { CS_BAD_TUPLE, "Bad CIS tuple" } 105 }; 106 107 108 static const lookup_t service_table[] = { 109 { AccessConfigurationRegister, "AccessConfigurationRegister" }, 110 { AddSocketServices, "AddSocketServices" }, 111 { AdjustResourceInfo, "AdjustResourceInfo" }, 112 { CheckEraseQueue, "CheckEraseQueue" }, 113 { CloseMemory, "CloseMemory" }, 114 { DeregisterClient, "DeregisterClient" }, 115 { DeregisterEraseQueue, "DeregisterEraseQueue" }, 116 { GetCardServicesInfo, "GetCardServicesInfo" }, 117 { GetClientInfo, "GetClientInfo" }, 118 { GetConfigurationInfo, "GetConfigurationInfo" }, 119 { GetEventMask, "GetEventMask" }, 120 { GetFirstClient, "GetFirstClient" }, 121 { GetFirstRegion, "GetFirstRegion" }, 122 { GetFirstTuple, "GetFirstTuple" }, 123 { GetNextClient, "GetNextClient" }, 124 { GetNextRegion, "GetNextRegion" }, 125 { GetNextTuple, "GetNextTuple" }, 126 { GetStatus, "GetStatus" }, 127 { GetTupleData, "GetTupleData" }, 128 { MapMemPage, "MapMemPage" }, 129 { ModifyConfiguration, "ModifyConfiguration" }, 130 { ModifyWindow, "ModifyWindow" }, 131 { OpenMemory, "OpenMemory" }, 132 { ParseTuple, "ParseTuple" }, 133 { ReadMemory, "ReadMemory" }, 134 { RegisterClient, "RegisterClient" }, 135 { RegisterEraseQueue, "RegisterEraseQueue" }, 136 { RegisterMTD, "RegisterMTD" }, 137 { ReleaseConfiguration, "ReleaseConfiguration" }, 138 { ReleaseIO, "ReleaseIO" }, 139 { ReleaseIRQ, "ReleaseIRQ" }, 140 { ReleaseWindow, "ReleaseWindow" }, 141 { RequestConfiguration, "RequestConfiguration" }, 142 { RequestIO, "RequestIO" }, 143 { RequestIRQ, "RequestIRQ" }, 144 { RequestSocketMask, "RequestSocketMask" }, 145 { RequestWindow, "RequestWindow" }, 146 { ResetCard, "ResetCard" }, 147 { SetEventMask, "SetEventMask" }, 148 { ValidateCIS, "ValidateCIS" }, 149 { WriteMemory, "WriteMemory" }, 150 { BindDevice, "BindDevice" }, 151 { BindMTD, "BindMTD" }, 152 { ReportError, "ReportError" }, 153 { SuspendCard, "SuspendCard" }, 154 { ResumeCard, "ResumeCard" }, 155 { EjectCard, "EjectCard" }, 156 { InsertCard, "InsertCard" }, 157 { ReplaceCIS, "ReplaceCIS" } 158 }; 159 160 161 static int pcmcia_report_error(struct pcmcia_device *p_dev, error_info_t *err) 162 { 163 int i; 164 char *serv; 165 166 if (!p_dev) 167 printk(KERN_NOTICE); 168 else 169 printk(KERN_NOTICE "%s: ", p_dev->dev.bus_id); 170 171 for (i = 0; i < ARRAY_SIZE(service_table); i++) 172 if (service_table[i].key == err->func) 173 break; 174 if (i < ARRAY_SIZE(service_table)) 175 serv = service_table[i].msg; 176 else 177 serv = "Unknown service number"; 178 179 for (i = 0; i < ARRAY_SIZE(error_table); i++) 180 if (error_table[i].key == err->retcode) 181 break; 182 if (i < ARRAY_SIZE(error_table)) 183 printk("%s: %s\n", serv, error_table[i].msg); 184 else 185 printk("%s: Unknown error code %#x\n", serv, err->retcode); 186 187 return CS_SUCCESS; 188 } /* report_error */ 189 190 /* end of code which was in cs.c before */ 191 192 /*======================================================================*/ 193 194 void cs_error(struct pcmcia_device *p_dev, int func, int ret) 195 { 196 error_info_t err = { func, ret }; 197 pcmcia_report_error(p_dev, &err); 198 } 199 EXPORT_SYMBOL(cs_error); 200 201 202 static void pcmcia_check_driver(struct pcmcia_driver *p_drv) 203 { 204 struct pcmcia_device_id *did = p_drv->id_table; 205 unsigned int i; 206 u32 hash; 207 208 if (!p_drv->attach || !p_drv->event || !p_drv->detach) 209 printk(KERN_DEBUG "pcmcia: %s lacks a requisite callback " 210 "function\n", p_drv->drv.name); 211 212 while (did && did->match_flags) { 213 for (i=0; i<4; i++) { 214 if (!did->prod_id[i]) 215 continue; 216 217 hash = crc32(0, did->prod_id[i], strlen(did->prod_id[i])); 218 if (hash == did->prod_id_hash[i]) 219 continue; 220 221 printk(KERN_DEBUG "pcmcia: %s: invalid hash for " 222 "product string \"%s\": is 0x%x, should " 223 "be 0x%x\n", p_drv->drv.name, did->prod_id[i], 224 did->prod_id_hash[i], hash); 225 printk(KERN_DEBUG "pcmcia: see " 226 "Documentation/pcmcia/devicetable.txt for " 227 "details\n"); 228 } 229 did++; 230 } 231 232 return; 233 } 234 235 236 #ifdef CONFIG_PCMCIA_LOAD_CIS 237 238 /** 239 * pcmcia_load_firmware - load CIS from userspace if device-provided is broken 240 * @dev - the pcmcia device which needs a CIS override 241 * @filename - requested filename in /lib/firmware/cis/ 242 * 243 * This uses the in-kernel firmware loading mechanism to use a "fake CIS" if 244 * the one provided by the card is broken. The firmware files reside in 245 * /lib/firmware/cis/ in userspace. 246 */ 247 static int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename) 248 { 249 struct pcmcia_socket *s = dev->socket; 250 const struct firmware *fw; 251 char path[20]; 252 int ret=-ENOMEM; 253 cisdump_t *cis; 254 255 if (!filename) 256 return -EINVAL; 257 258 ds_dbg(1, "trying to load firmware %s\n", filename); 259 260 if (strlen(filename) > 14) 261 return -EINVAL; 262 263 snprintf(path, 20, "%s", filename); 264 265 if (request_firmware(&fw, path, &dev->dev) == 0) { 266 if (fw->size >= CISTPL_MAX_CIS_SIZE) 267 goto release; 268 269 cis = kmalloc(sizeof(cisdump_t), GFP_KERNEL); 270 if (!cis) 271 goto release; 272 273 memset(cis, 0, sizeof(cisdump_t)); 274 275 cis->Length = fw->size + 1; 276 memcpy(cis->Data, fw->data, fw->size); 277 278 if (!pcmcia_replace_cis(s, cis)) 279 ret = 0; 280 } 281 release: 282 release_firmware(fw); 283 284 return (ret); 285 } 286 287 #else /* !CONFIG_PCMCIA_LOAD_CIS */ 288 289 static inline int pcmcia_load_firmware(struct pcmcia_device *dev, char * filename) 290 { 291 return -ENODEV; 292 } 293 294 #endif 295 296 297 /*======================================================================*/ 298 299 300 /** 301 * pcmcia_register_driver - register a PCMCIA driver with the bus core 302 * 303 * Registers a PCMCIA driver with the PCMCIA bus core. 304 */ 305 static int pcmcia_device_probe(struct device *dev); 306 static int pcmcia_device_remove(struct device * dev); 307 308 int pcmcia_register_driver(struct pcmcia_driver *driver) 309 { 310 if (!driver) 311 return -EINVAL; 312 313 pcmcia_check_driver(driver); 314 315 /* initialize common fields */ 316 driver->drv.bus = &pcmcia_bus_type; 317 driver->drv.owner = driver->owner; 318 driver->drv.probe = pcmcia_device_probe; 319 driver->drv.remove = pcmcia_device_remove; 320 321 return driver_register(&driver->drv); 322 } 323 EXPORT_SYMBOL(pcmcia_register_driver); 324 325 /** 326 * pcmcia_unregister_driver - unregister a PCMCIA driver with the bus core 327 */ 328 void pcmcia_unregister_driver(struct pcmcia_driver *driver) 329 { 330 driver_unregister(&driver->drv); 331 } 332 EXPORT_SYMBOL(pcmcia_unregister_driver); 333 334 335 /* pcmcia_device handling */ 336 337 struct pcmcia_device * pcmcia_get_dev(struct pcmcia_device *p_dev) 338 { 339 struct device *tmp_dev; 340 tmp_dev = get_device(&p_dev->dev); 341 if (!tmp_dev) 342 return NULL; 343 return to_pcmcia_dev(tmp_dev); 344 } 345 346 void pcmcia_put_dev(struct pcmcia_device *p_dev) 347 { 348 if (p_dev) 349 put_device(&p_dev->dev); 350 } 351 352 static void pcmcia_release_dev(struct device *dev) 353 { 354 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); 355 ds_dbg(1, "releasing dev %p\n", p_dev); 356 pcmcia_put_socket(p_dev->socket); 357 kfree(p_dev->devname); 358 kfree(p_dev); 359 } 360 361 362 static int pcmcia_device_probe(struct device * dev) 363 { 364 struct pcmcia_device *p_dev; 365 struct pcmcia_driver *p_drv; 366 int ret = 0; 367 368 dev = get_device(dev); 369 if (!dev) 370 return -ENODEV; 371 372 p_dev = to_pcmcia_dev(dev); 373 p_drv = to_pcmcia_drv(dev->driver); 374 375 if (!try_module_get(p_drv->owner)) { 376 ret = -EINVAL; 377 goto put_dev; 378 } 379 380 if (p_drv->attach) { 381 p_dev->instance = p_drv->attach(); 382 if ((!p_dev->instance) || (p_dev->state & CLIENT_UNBOUND)) { 383 printk(KERN_NOTICE "ds: unable to create instance " 384 "of '%s'!\n", p_drv->drv.name); 385 ret = -EINVAL; 386 } 387 } 388 389 if (ret) 390 module_put(p_drv->owner); 391 put_dev: 392 if ((ret) || !(p_drv->attach)) 393 put_device(dev); 394 return (ret); 395 } 396 397 398 static int pcmcia_device_remove(struct device * dev) 399 { 400 struct pcmcia_device *p_dev; 401 struct pcmcia_driver *p_drv; 402 403 /* detach the "instance" */ 404 p_dev = to_pcmcia_dev(dev); 405 p_drv = to_pcmcia_drv(dev->driver); 406 407 if (p_drv) { 408 if ((p_drv->detach) && (p_dev->instance)) { 409 p_drv->detach(p_dev->instance); 410 /* from pcmcia_probe_device */ 411 put_device(&p_dev->dev); 412 } 413 module_put(p_drv->owner); 414 } 415 416 return 0; 417 } 418 419 420 421 /* 422 * pcmcia_device_query -- determine information about a pcmcia device 423 */ 424 static int pcmcia_device_query(struct pcmcia_device *p_dev) 425 { 426 cistpl_manfid_t manf_id; 427 cistpl_funcid_t func_id; 428 cistpl_vers_1_t *vers1; 429 unsigned int i; 430 431 vers1 = kmalloc(sizeof(*vers1), GFP_KERNEL); 432 if (!vers1) 433 return -ENOMEM; 434 435 if (!pccard_read_tuple(p_dev->socket, p_dev->func, 436 CISTPL_MANFID, &manf_id)) { 437 p_dev->manf_id = manf_id.manf; 438 p_dev->card_id = manf_id.card; 439 p_dev->has_manf_id = 1; 440 p_dev->has_card_id = 1; 441 } 442 443 if (!pccard_read_tuple(p_dev->socket, p_dev->func, 444 CISTPL_FUNCID, &func_id)) { 445 p_dev->func_id = func_id.func; 446 p_dev->has_func_id = 1; 447 } else { 448 /* rule of thumb: cards with no FUNCID, but with 449 * common memory device geometry information, are 450 * probably memory cards (from pcmcia-cs) */ 451 cistpl_device_geo_t *devgeo; 452 453 devgeo = kmalloc(sizeof(*devgeo), GFP_KERNEL); 454 if (!devgeo) { 455 kfree(vers1); 456 return -ENOMEM; 457 } 458 if (!pccard_read_tuple(p_dev->socket, p_dev->func, 459 CISTPL_DEVICE_GEO, devgeo)) { 460 ds_dbg(0, "mem device geometry probably means " 461 "FUNCID_MEMORY\n"); 462 p_dev->func_id = CISTPL_FUNCID_MEMORY; 463 p_dev->has_func_id = 1; 464 } 465 kfree(devgeo); 466 } 467 468 if (!pccard_read_tuple(p_dev->socket, p_dev->func, CISTPL_VERS_1, 469 vers1)) { 470 for (i=0; i < vers1->ns; i++) { 471 char *tmp; 472 unsigned int length; 473 474 tmp = vers1->str + vers1->ofs[i]; 475 476 length = strlen(tmp) + 1; 477 if ((length < 3) || (length > 255)) 478 continue; 479 480 p_dev->prod_id[i] = kmalloc(sizeof(char) * length, 481 GFP_KERNEL); 482 if (!p_dev->prod_id[i]) 483 continue; 484 485 p_dev->prod_id[i] = strncpy(p_dev->prod_id[i], 486 tmp, length); 487 } 488 } 489 490 kfree(vers1); 491 return 0; 492 } 493 494 495 /* device_add_lock is needed to avoid double registration by cardmgr and kernel. 496 * Serializes pcmcia_device_add; will most likely be removed in future. 497 * 498 * While it has the caveat that adding new PCMCIA devices inside(!) device_register() 499 * won't work, this doesn't matter much at the moment: the driver core doesn't 500 * support it either. 501 */ 502 static DECLARE_MUTEX(device_add_lock); 503 504 struct pcmcia_device * pcmcia_device_add(struct pcmcia_socket *s, unsigned int function) 505 { 506 struct pcmcia_device *p_dev; 507 unsigned long flags; 508 int bus_id_len; 509 510 s = pcmcia_get_socket(s); 511 if (!s) 512 return NULL; 513 514 down(&device_add_lock); 515 516 /* max of 2 devices per card */ 517 if (s->device_count == 2) 518 goto err_put; 519 520 p_dev = kmalloc(sizeof(struct pcmcia_device), GFP_KERNEL); 521 if (!p_dev) 522 goto err_put; 523 memset(p_dev, 0, sizeof(struct pcmcia_device)); 524 525 p_dev->socket = s; 526 p_dev->device_no = (s->device_count++); 527 p_dev->func = function; 528 529 p_dev->dev.bus = &pcmcia_bus_type; 530 p_dev->dev.parent = s->dev.dev; 531 p_dev->dev.release = pcmcia_release_dev; 532 bus_id_len = sprintf (p_dev->dev.bus_id, "%d.%d", p_dev->socket->sock, p_dev->device_no); 533 534 p_dev->devname = kmalloc(6 + bus_id_len + 1, GFP_KERNEL); 535 if (!p_dev->devname) 536 goto err_free; 537 sprintf (p_dev->devname, "pcmcia%s", p_dev->dev.bus_id); 538 539 /* compat */ 540 p_dev->state = CLIENT_UNBOUND; 541 542 /* Add to the list in pcmcia_bus_socket */ 543 spin_lock_irqsave(&pcmcia_dev_list_lock, flags); 544 list_add_tail(&p_dev->socket_device_list, &s->devices_list); 545 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); 546 547 printk(KERN_NOTICE "pcmcia: registering new device %s\n", 548 p_dev->devname); 549 550 pcmcia_device_query(p_dev); 551 552 if (device_register(&p_dev->dev)) { 553 spin_lock_irqsave(&pcmcia_dev_list_lock, flags); 554 list_del(&p_dev->socket_device_list); 555 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); 556 557 goto err_free; 558 } 559 560 up(&device_add_lock); 561 562 return p_dev; 563 564 err_free: 565 kfree(p_dev->devname); 566 kfree(p_dev); 567 s->device_count--; 568 err_put: 569 up(&device_add_lock); 570 pcmcia_put_socket(s); 571 572 return NULL; 573 } 574 575 576 static int pcmcia_card_add(struct pcmcia_socket *s) 577 { 578 cisinfo_t cisinfo; 579 cistpl_longlink_mfc_t mfc; 580 unsigned int no_funcs, i; 581 int ret = 0; 582 583 if (!(s->resource_setup_done)) 584 return -EAGAIN; /* try again, but later... */ 585 586 pcmcia_validate_mem(s); 587 ret = pccard_validate_cis(s, BIND_FN_ALL, &cisinfo); 588 if (ret || !cisinfo.Chains) { 589 ds_dbg(0, "invalid CIS or invalid resources\n"); 590 return -ENODEV; 591 } 592 593 if (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_LONGLINK_MFC, &mfc)) 594 no_funcs = mfc.nfn; 595 else 596 no_funcs = 1; 597 598 for (i=0; i < no_funcs; i++) 599 pcmcia_device_add(s, i); 600 601 return (ret); 602 } 603 604 605 static void pcmcia_delayed_add_pseudo_device(void *data) 606 { 607 struct pcmcia_socket *s = data; 608 pcmcia_device_add(s, 0); 609 s->pcmcia_state.device_add_pending = 0; 610 } 611 612 static inline void pcmcia_add_pseudo_device(struct pcmcia_socket *s) 613 { 614 if (!s->pcmcia_state.device_add_pending) { 615 s->pcmcia_state.device_add_pending = 1; 616 schedule_work(&s->device_add); 617 } 618 return; 619 } 620 621 static int pcmcia_requery(struct device *dev, void * _data) 622 { 623 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); 624 if (!p_dev->dev.driver) 625 pcmcia_device_query(p_dev); 626 627 return 0; 628 } 629 630 static void pcmcia_bus_rescan(struct pcmcia_socket *skt) 631 { 632 int no_devices=0; 633 unsigned long flags; 634 635 /* must be called with skt_sem held */ 636 spin_lock_irqsave(&pcmcia_dev_list_lock, flags); 637 if (list_empty(&skt->devices_list)) 638 no_devices=1; 639 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); 640 641 /* if no devices were added for this socket yet because of 642 * missing resource information or other trouble, we need to 643 * do this now. */ 644 if (no_devices) { 645 int ret = pcmcia_card_add(skt); 646 if (ret) 647 return; 648 } 649 650 /* some device information might have changed because of a CIS 651 * update or because we can finally read it correctly... so 652 * determine it again, overwriting old values if necessary. */ 653 bus_for_each_dev(&pcmcia_bus_type, NULL, NULL, pcmcia_requery); 654 655 /* we re-scan all devices, not just the ones connected to this 656 * socket. This does not matter, though. */ 657 bus_rescan_devices(&pcmcia_bus_type); 658 } 659 660 static inline int pcmcia_devmatch(struct pcmcia_device *dev, 661 struct pcmcia_device_id *did) 662 { 663 if (did->match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID) { 664 if ((!dev->has_manf_id) || (dev->manf_id != did->manf_id)) 665 return 0; 666 } 667 668 if (did->match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID) { 669 if ((!dev->has_card_id) || (dev->card_id != did->card_id)) 670 return 0; 671 } 672 673 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION) { 674 if (dev->func != did->function) 675 return 0; 676 } 677 678 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1) { 679 if (!dev->prod_id[0]) 680 return 0; 681 if (strcmp(did->prod_id[0], dev->prod_id[0])) 682 return 0; 683 } 684 685 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2) { 686 if (!dev->prod_id[1]) 687 return 0; 688 if (strcmp(did->prod_id[1], dev->prod_id[1])) 689 return 0; 690 } 691 692 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3) { 693 if (!dev->prod_id[2]) 694 return 0; 695 if (strcmp(did->prod_id[2], dev->prod_id[2])) 696 return 0; 697 } 698 699 if (did->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4) { 700 if (!dev->prod_id[3]) 701 return 0; 702 if (strcmp(did->prod_id[3], dev->prod_id[3])) 703 return 0; 704 } 705 706 if (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) { 707 /* handle pseudo multifunction devices: 708 * there are at most two pseudo multifunction devices. 709 * if we're matching against the first, schedule a 710 * call which will then check whether there are two 711 * pseudo devices, and if not, add the second one. 712 */ 713 if (dev->device_no == 0) 714 pcmcia_add_pseudo_device(dev->socket); 715 716 if (dev->device_no != did->device_no) 717 return 0; 718 } 719 720 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID) { 721 if ((!dev->has_func_id) || (dev->func_id != did->func_id)) 722 return 0; 723 724 /* if this is a pseudo-multi-function device, 725 * we need explicit matches */ 726 if (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) 727 return 0; 728 if (dev->device_no) 729 return 0; 730 731 /* also, FUNC_ID matching needs to be activated by userspace 732 * after it has re-checked that there is no possible module 733 * with a prod_id/manf_id/card_id match. 734 */ 735 if (!dev->allow_func_id_match) 736 return 0; 737 } 738 739 if (did->match_flags & PCMCIA_DEV_ID_MATCH_FAKE_CIS) { 740 if (!dev->socket->fake_cis) 741 pcmcia_load_firmware(dev, did->cisfile); 742 743 if (!dev->socket->fake_cis) 744 return 0; 745 } 746 747 if (did->match_flags & PCMCIA_DEV_ID_MATCH_ANONYMOUS) { 748 int i; 749 for (i=0; i<4; i++) 750 if (dev->prod_id[i]) 751 return 0; 752 if (dev->has_manf_id || dev->has_card_id || dev->has_func_id) 753 return 0; 754 } 755 756 dev->dev.driver_data = (void *) did; 757 758 return 1; 759 } 760 761 762 static int pcmcia_bus_match(struct device * dev, struct device_driver * drv) { 763 struct pcmcia_device * p_dev = to_pcmcia_dev(dev); 764 struct pcmcia_driver * p_drv = to_pcmcia_drv(drv); 765 struct pcmcia_device_id *did = p_drv->id_table; 766 767 /* matching by cardmgr */ 768 if (p_dev->cardmgr == p_drv) 769 return 1; 770 771 while (did && did->match_flags) { 772 if (pcmcia_devmatch(p_dev, did)) 773 return 1; 774 did++; 775 } 776 777 return 0; 778 } 779 780 #ifdef CONFIG_HOTPLUG 781 782 static int pcmcia_bus_hotplug(struct device *dev, char **envp, int num_envp, 783 char *buffer, int buffer_size) 784 { 785 struct pcmcia_device *p_dev; 786 int i, length = 0; 787 u32 hash[4] = { 0, 0, 0, 0}; 788 789 if (!dev) 790 return -ENODEV; 791 792 p_dev = to_pcmcia_dev(dev); 793 794 /* calculate hashes */ 795 for (i=0; i<4; i++) { 796 if (!p_dev->prod_id[i]) 797 continue; 798 hash[i] = crc32(0, p_dev->prod_id[i], strlen(p_dev->prod_id[i])); 799 } 800 801 i = 0; 802 803 if (add_hotplug_env_var(envp, num_envp, &i, 804 buffer, buffer_size, &length, 805 "SOCKET_NO=%u", 806 p_dev->socket->sock)) 807 return -ENOMEM; 808 809 if (add_hotplug_env_var(envp, num_envp, &i, 810 buffer, buffer_size, &length, 811 "DEVICE_NO=%02X", 812 p_dev->device_no)) 813 return -ENOMEM; 814 815 if (add_hotplug_env_var(envp, num_envp, &i, 816 buffer, buffer_size, &length, 817 "MODALIAS=pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X" 818 "pa%08Xpb%08Xpc%08Xpd%08X", 819 p_dev->has_manf_id ? p_dev->manf_id : 0, 820 p_dev->has_card_id ? p_dev->card_id : 0, 821 p_dev->has_func_id ? p_dev->func_id : 0, 822 p_dev->func, 823 p_dev->device_no, 824 hash[0], 825 hash[1], 826 hash[2], 827 hash[3])) 828 return -ENOMEM; 829 830 envp[i] = NULL; 831 832 return 0; 833 } 834 835 #else 836 837 static int pcmcia_bus_hotplug(struct device *dev, char **envp, int num_envp, 838 char *buffer, int buffer_size) 839 { 840 return -ENODEV; 841 } 842 843 #endif 844 845 /************************ per-device sysfs output ***************************/ 846 847 #define pcmcia_device_attr(field, test, format) \ 848 static ssize_t field##_show (struct device *dev, struct device_attribute *attr, char *buf) \ 849 { \ 850 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \ 851 return p_dev->test ? sprintf (buf, format, p_dev->field) : -ENODEV; \ 852 } 853 854 #define pcmcia_device_stringattr(name, field) \ 855 static ssize_t name##_show (struct device *dev, struct device_attribute *attr, char *buf) \ 856 { \ 857 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); \ 858 return p_dev->field ? sprintf (buf, "%s\n", p_dev->field) : -ENODEV; \ 859 } 860 861 pcmcia_device_attr(func, socket, "0x%02x\n"); 862 pcmcia_device_attr(func_id, has_func_id, "0x%02x\n"); 863 pcmcia_device_attr(manf_id, has_manf_id, "0x%04x\n"); 864 pcmcia_device_attr(card_id, has_card_id, "0x%04x\n"); 865 pcmcia_device_stringattr(prod_id1, prod_id[0]); 866 pcmcia_device_stringattr(prod_id2, prod_id[1]); 867 pcmcia_device_stringattr(prod_id3, prod_id[2]); 868 pcmcia_device_stringattr(prod_id4, prod_id[3]); 869 870 static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf) 871 { 872 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); 873 int i; 874 u32 hash[4] = { 0, 0, 0, 0}; 875 876 /* calculate hashes */ 877 for (i=0; i<4; i++) { 878 if (!p_dev->prod_id[i]) 879 continue; 880 hash[i] = crc32(0,p_dev->prod_id[i],strlen(p_dev->prod_id[i])); 881 } 882 return sprintf(buf, "pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X" 883 "pa%08Xpb%08Xpc%08Xpd%08X\n", 884 p_dev->has_manf_id ? p_dev->manf_id : 0, 885 p_dev->has_card_id ? p_dev->card_id : 0, 886 p_dev->has_func_id ? p_dev->func_id : 0, 887 p_dev->func, p_dev->device_no, 888 hash[0], hash[1], hash[2], hash[3]); 889 } 890 891 static ssize_t pcmcia_store_allow_func_id_match(struct device *dev, 892 struct device_attribute *attr, const char *buf, size_t count) 893 { 894 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); 895 if (!count) 896 return -EINVAL; 897 898 down(&p_dev->socket->skt_sem); 899 p_dev->allow_func_id_match = 1; 900 up(&p_dev->socket->skt_sem); 901 902 bus_rescan_devices(&pcmcia_bus_type); 903 904 return count; 905 } 906 907 static struct device_attribute pcmcia_dev_attrs[] = { 908 __ATTR(function, 0444, func_show, NULL), 909 __ATTR_RO(func_id), 910 __ATTR_RO(manf_id), 911 __ATTR_RO(card_id), 912 __ATTR_RO(prod_id1), 913 __ATTR_RO(prod_id2), 914 __ATTR_RO(prod_id3), 915 __ATTR_RO(prod_id4), 916 __ATTR_RO(modalias), 917 __ATTR(allow_func_id_match, 0200, NULL, pcmcia_store_allow_func_id_match), 918 __ATTR_NULL, 919 }; 920 921 922 /*====================================================================== 923 924 The card status event handler. 925 926 ======================================================================*/ 927 928 struct send_event_data { 929 struct pcmcia_socket *skt; 930 event_t event; 931 int priority; 932 }; 933 934 static int send_event_callback(struct device *dev, void * _data) 935 { 936 struct pcmcia_device *p_dev = to_pcmcia_dev(dev); 937 struct pcmcia_driver *p_drv; 938 struct send_event_data *data = _data; 939 940 /* we get called for all sockets, but may only pass the event 941 * for drivers _on the affected socket_ */ 942 if (p_dev->socket != data->skt) 943 return 0; 944 945 p_drv = to_pcmcia_drv(p_dev->dev.driver); 946 if (!p_drv) 947 return 0; 948 949 if (p_dev->state & (CLIENT_UNBOUND|CLIENT_STALE)) 950 return 0; 951 952 if (p_drv->event) 953 return p_drv->event(data->event, data->priority, 954 &p_dev->event_callback_args); 955 956 return 0; 957 } 958 959 static int send_event(struct pcmcia_socket *s, event_t event, int priority) 960 { 961 struct send_event_data private; 962 963 private.skt = s; 964 private.event = event; 965 private.priority = priority; 966 967 return bus_for_each_dev(&pcmcia_bus_type, NULL, &private, send_event_callback); 968 } /* send_event */ 969 970 971 /* Normally, the event is passed to individual drivers after 972 * informing userspace. Only for CS_EVENT_CARD_REMOVAL this 973 * is inversed to maintain historic compatibility. 974 */ 975 976 static int ds_event(struct pcmcia_socket *skt, event_t event, int priority) 977 { 978 struct pcmcia_socket *s = pcmcia_get_socket(skt); 979 int ret = 0; 980 981 ds_dbg(1, "ds_event(0x%06x, %d, 0x%p)\n", 982 event, priority, skt); 983 984 switch (event) { 985 986 case CS_EVENT_CARD_REMOVAL: 987 s->pcmcia_state.present = 0; 988 send_event(skt, event, priority); 989 unbind_request(skt); 990 handle_event(skt, event); 991 break; 992 993 case CS_EVENT_CARD_INSERTION: 994 s->pcmcia_state.present = 1; 995 pcmcia_card_add(skt); 996 handle_event(skt, event); 997 break; 998 999 case CS_EVENT_EJECTION_REQUEST: 1000 ret = send_event(skt, event, priority); 1001 break; 1002 1003 default: 1004 handle_event(skt, event); 1005 send_event(skt, event, priority); 1006 break; 1007 } 1008 1009 pcmcia_put_socket(s); 1010 1011 return 0; 1012 } /* ds_event */ 1013 1014 1015 1016 int pcmcia_register_client(struct pcmcia_device **handle, client_reg_t *req) 1017 { 1018 struct pcmcia_socket *s = NULL; 1019 struct pcmcia_device *p_dev = NULL; 1020 struct pcmcia_driver *p_drv = NULL; 1021 1022 /* Look for unbound client with matching dev_info */ 1023 down_read(&pcmcia_socket_list_rwsem); 1024 list_for_each_entry(s, &pcmcia_socket_list, socket_list) { 1025 unsigned long flags; 1026 1027 if (s->state & SOCKET_CARDBUS) 1028 continue; 1029 1030 s = pcmcia_get_socket(s); 1031 if (!s) 1032 continue; 1033 spin_lock_irqsave(&pcmcia_dev_list_lock, flags); 1034 list_for_each_entry(p_dev, &s->devices_list, socket_device_list) { 1035 p_dev = pcmcia_get_dev(p_dev); 1036 if (!p_dev) 1037 continue; 1038 if (!(p_dev->state & CLIENT_UNBOUND) || 1039 (!p_dev->dev.driver)) { 1040 pcmcia_put_dev(p_dev); 1041 continue; 1042 } 1043 p_drv = to_pcmcia_drv(p_dev->dev.driver); 1044 if (!strncmp(p_drv->drv.name, (char *)req->dev_info, DEV_NAME_LEN)) { 1045 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); 1046 goto found; 1047 } 1048 pcmcia_put_dev(p_dev); 1049 } 1050 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); 1051 pcmcia_put_socket(s); 1052 } 1053 found: 1054 up_read(&pcmcia_socket_list_rwsem); 1055 if (!p_dev) 1056 return -ENODEV; 1057 1058 pcmcia_put_socket(s); /* safe, as we already hold a reference from bind_device */ 1059 1060 *handle = p_dev; 1061 p_dev->state &= ~CLIENT_UNBOUND; 1062 p_dev->event_callback_args = req->event_callback_args; 1063 p_dev->event_callback_args.client_handle = p_dev; 1064 1065 1066 if (!s->functions) { 1067 cistpl_longlink_mfc_t mfc; 1068 if (pccard_read_tuple(s, p_dev->func, CISTPL_LONGLINK_MFC, &mfc) 1069 == CS_SUCCESS) 1070 s->functions = mfc.nfn; 1071 else 1072 s->functions = 1; 1073 s->config = kmalloc(sizeof(config_t) * s->functions, 1074 GFP_KERNEL); 1075 if (!s->config) 1076 goto out_no_resource; 1077 memset(s->config, 0, sizeof(config_t) * s->functions); 1078 } 1079 1080 ds_dbg(1, "register_client(): client 0x%p, dev %s\n", 1081 p_dev, p_dev->dev.bus_id); 1082 1083 if ((s->state & (SOCKET_PRESENT|SOCKET_CARDBUS)) == SOCKET_PRESENT) { 1084 if (p_drv->event) 1085 p_drv->event(CS_EVENT_CARD_INSERTION, CS_EVENT_PRI_LOW, 1086 &p_dev->event_callback_args); 1087 1088 } 1089 1090 return CS_SUCCESS; 1091 1092 out_no_resource: 1093 pcmcia_put_dev(p_dev); 1094 return CS_OUT_OF_RESOURCE; 1095 } /* register_client */ 1096 EXPORT_SYMBOL(pcmcia_register_client); 1097 1098 1099 /* unbind _all_ devices attached to a given pcmcia_bus_socket. The 1100 * drivers have been called with EVENT_CARD_REMOVAL before. 1101 */ 1102 static int unbind_request(struct pcmcia_socket *s) 1103 { 1104 struct pcmcia_device *p_dev; 1105 unsigned long flags; 1106 1107 ds_dbg(2, "unbind_request(%d)\n", s->sock); 1108 1109 s->device_count = 0; 1110 1111 for (;;) { 1112 /* unregister all pcmcia_devices registered with this socket*/ 1113 spin_lock_irqsave(&pcmcia_dev_list_lock, flags); 1114 if (list_empty(&s->devices_list)) { 1115 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); 1116 return 0; 1117 } 1118 p_dev = list_entry((&s->devices_list)->next, struct pcmcia_device, socket_device_list); 1119 list_del(&p_dev->socket_device_list); 1120 p_dev->state |= CLIENT_STALE; 1121 spin_unlock_irqrestore(&pcmcia_dev_list_lock, flags); 1122 1123 device_unregister(&p_dev->dev); 1124 } 1125 1126 return 0; 1127 } /* unbind_request */ 1128 1129 int pcmcia_deregister_client(struct pcmcia_device *p_dev) 1130 { 1131 struct pcmcia_socket *s; 1132 int i; 1133 1134 s = p_dev->socket; 1135 ds_dbg(1, "deregister_client(%p)\n", p_dev); 1136 1137 if (p_dev->state & (CLIENT_IRQ_REQ|CLIENT_IO_REQ|CLIENT_CONFIG_LOCKED)) 1138 goto warn_out; 1139 for (i = 0; i < MAX_WIN; i++) 1140 if (p_dev->state & CLIENT_WIN_REQ(i)) 1141 goto warn_out; 1142 1143 if (p_dev->state & CLIENT_STALE) { 1144 p_dev->state &= ~CLIENT_STALE; 1145 pcmcia_put_dev(p_dev); 1146 } else { 1147 p_dev->state = CLIENT_UNBOUND; 1148 } 1149 1150 return CS_SUCCESS; 1151 warn_out: 1152 printk(KERN_WARNING "ds: deregister_client was called too early.\n"); 1153 return CS_IN_USE; 1154 } /* deregister_client */ 1155 EXPORT_SYMBOL(pcmcia_deregister_client); 1156 1157 static struct pcmcia_callback pcmcia_bus_callback = { 1158 .owner = THIS_MODULE, 1159 .event = ds_event, 1160 .requery = pcmcia_bus_rescan, 1161 }; 1162 1163 static int __devinit pcmcia_bus_add_socket(struct class_device *class_dev, 1164 struct class_interface *class_intf) 1165 { 1166 struct pcmcia_socket *socket = class_get_devdata(class_dev); 1167 int ret; 1168 1169 socket = pcmcia_get_socket(socket); 1170 if (!socket) { 1171 printk(KERN_ERR "PCMCIA obtaining reference to socket %p failed\n", socket); 1172 return -ENODEV; 1173 } 1174 1175 /* 1176 * Ugly. But we want to wait for the socket threads to have started up. 1177 * We really should let the drivers themselves drive some of this.. 1178 */ 1179 msleep(250); 1180 1181 #ifdef CONFIG_PCMCIA_IOCTL 1182 init_waitqueue_head(&socket->queue); 1183 #endif 1184 INIT_LIST_HEAD(&socket->devices_list); 1185 INIT_WORK(&socket->device_add, pcmcia_delayed_add_pseudo_device, socket); 1186 memset(&socket->pcmcia_state, 0, sizeof(u8)); 1187 socket->device_count = 0; 1188 1189 ret = pccard_register_pcmcia(socket, &pcmcia_bus_callback); 1190 if (ret) { 1191 printk(KERN_ERR "PCMCIA registration PCCard core failed for socket %p\n", socket); 1192 pcmcia_put_socket(socket); 1193 return (ret); 1194 } 1195 1196 return 0; 1197 } 1198 1199 static void pcmcia_bus_remove_socket(struct class_device *class_dev, 1200 struct class_interface *class_intf) 1201 { 1202 struct pcmcia_socket *socket = class_get_devdata(class_dev); 1203 1204 if (!socket) 1205 return; 1206 1207 socket->pcmcia_state.dead = 1; 1208 pccard_register_pcmcia(socket, NULL); 1209 1210 pcmcia_put_socket(socket); 1211 1212 return; 1213 } 1214 1215 1216 /* the pcmcia_bus_interface is used to handle pcmcia socket devices */ 1217 static struct class_interface pcmcia_bus_interface = { 1218 .class = &pcmcia_socket_class, 1219 .add = &pcmcia_bus_add_socket, 1220 .remove = &pcmcia_bus_remove_socket, 1221 }; 1222 1223 1224 struct bus_type pcmcia_bus_type = { 1225 .name = "pcmcia", 1226 .hotplug = pcmcia_bus_hotplug, 1227 .match = pcmcia_bus_match, 1228 .dev_attrs = pcmcia_dev_attrs, 1229 }; 1230 1231 1232 static int __init init_pcmcia_bus(void) 1233 { 1234 spin_lock_init(&pcmcia_dev_list_lock); 1235 1236 bus_register(&pcmcia_bus_type); 1237 class_interface_register(&pcmcia_bus_interface); 1238 1239 pcmcia_setup_ioctl(); 1240 1241 return 0; 1242 } 1243 fs_initcall(init_pcmcia_bus); /* one level after subsys_initcall so that 1244 * pcmcia_socket_class is already registered */ 1245 1246 1247 static void __exit exit_pcmcia_bus(void) 1248 { 1249 pcmcia_cleanup_ioctl(); 1250 1251 class_interface_unregister(&pcmcia_bus_interface); 1252 1253 bus_unregister(&pcmcia_bus_type); 1254 } 1255 module_exit(exit_pcmcia_bus); 1256 1257 1258 MODULE_ALIAS("ds"); 1259