1 /* 2 * $Id: pcmciamtd.c,v 1.55 2005/11/07 11:14:28 gleixner Exp $ 3 * 4 * pcmciamtd.c - MTD driver for PCMCIA flash memory cards 5 * 6 * Author: Simon Evans <spse@secret.org.uk> 7 * 8 * Copyright (C) 2002 Simon Evans 9 * 10 * Licence: GPL 11 * 12 */ 13 14 #include <linux/module.h> 15 #include <linux/slab.h> 16 #include <linux/timer.h> 17 #include <linux/init.h> 18 #include <asm/io.h> 19 #include <asm/system.h> 20 21 #include <pcmcia/cs_types.h> 22 #include <pcmcia/cs.h> 23 #include <pcmcia/cistpl.h> 24 #include <pcmcia/ds.h> 25 26 #include <linux/mtd/map.h> 27 #include <linux/mtd/mtd.h> 28 29 #ifdef CONFIG_MTD_DEBUG 30 static int debug = CONFIG_MTD_DEBUG_VERBOSE; 31 MODULE_PARM(debug, "i"); 32 MODULE_PARM_DESC(debug, "Set Debug Level 0=quiet, 5=noisy"); 33 #undef DEBUG 34 #define DEBUG(n, format, arg...) \ 35 if (n <= debug) { \ 36 printk(KERN_DEBUG __FILE__ ":%s(): " format "\n", __FUNCTION__ , ## arg); \ 37 } 38 39 #else 40 #undef DEBUG 41 #define DEBUG(n, arg...) 42 static const int debug = 0; 43 #endif 44 45 #define err(format, arg...) printk(KERN_ERR "pcmciamtd: " format "\n" , ## arg) 46 #define info(format, arg...) printk(KERN_INFO "pcmciamtd: " format "\n" , ## arg) 47 #define warn(format, arg...) printk(KERN_WARNING "pcmciamtd: " format "\n" , ## arg) 48 49 50 #define DRIVER_DESC "PCMCIA Flash memory card driver" 51 #define DRIVER_VERSION "$Revision: 1.55 $" 52 53 /* Size of the PCMCIA address space: 26 bits = 64 MB */ 54 #define MAX_PCMCIA_ADDR 0x4000000 55 56 struct pcmciamtd_dev { 57 dev_link_t link; /* PCMCIA link */ 58 dev_node_t node; /* device node */ 59 caddr_t win_base; /* ioremapped address of PCMCIA window */ 60 unsigned int win_size; /* size of window */ 61 unsigned int offset; /* offset into card the window currently points at */ 62 struct map_info pcmcia_map; 63 struct mtd_info *mtd_info; 64 int vpp; 65 char mtd_name[sizeof(struct cistpl_vers_1_t)]; 66 }; 67 68 69 static dev_info_t dev_info = "pcmciamtd"; 70 static dev_link_t *dev_list; 71 72 /* Module parameters */ 73 74 /* 2 = do 16-bit transfers, 1 = do 8-bit transfers */ 75 static int bankwidth = 2; 76 77 /* Speed of memory accesses, in ns */ 78 static int mem_speed; 79 80 /* Force the size of an SRAM card */ 81 static int force_size; 82 83 /* Force Vpp */ 84 static int vpp; 85 86 /* Set Vpp */ 87 static int setvpp; 88 89 /* Force card to be treated as FLASH, ROM or RAM */ 90 static int mem_type; 91 92 MODULE_LICENSE("GPL"); 93 MODULE_AUTHOR("Simon Evans <spse@secret.org.uk>"); 94 MODULE_DESCRIPTION(DRIVER_DESC); 95 MODULE_PARM(bankwidth, "i"); 96 MODULE_PARM_DESC(bankwidth, "Set bankwidth (1=8 bit, 2=16 bit, default=2)"); 97 MODULE_PARM(mem_speed, "i"); 98 MODULE_PARM_DESC(mem_speed, "Set memory access speed in ns"); 99 MODULE_PARM(force_size, "i"); 100 MODULE_PARM_DESC(force_size, "Force size of card in MiB (1-64)"); 101 MODULE_PARM(setvpp, "i"); 102 MODULE_PARM_DESC(setvpp, "Set Vpp (0=Never, 1=On writes, 2=Always on, default=0)"); 103 MODULE_PARM(vpp, "i"); 104 MODULE_PARM_DESC(vpp, "Vpp value in 1/10ths eg 33=3.3V 120=12V (Dangerous)"); 105 MODULE_PARM(mem_type, "i"); 106 MODULE_PARM_DESC(mem_type, "Set Memory type (0=Flash, 1=RAM, 2=ROM, default=0)"); 107 108 109 /* read/write{8,16} copy_{from,to} routines with window remapping to access whole card */ 110 static caddr_t remap_window(struct map_info *map, unsigned long to) 111 { 112 struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1; 113 window_handle_t win = (window_handle_t)map->map_priv_2; 114 memreq_t mrq; 115 int ret; 116 117 if(!(dev->link.state & DEV_PRESENT)) { 118 DEBUG(1, "device removed state = 0x%4.4X", dev->link.state); 119 return 0; 120 } 121 122 mrq.CardOffset = to & ~(dev->win_size-1); 123 if(mrq.CardOffset != dev->offset) { 124 DEBUG(2, "Remapping window from 0x%8.8x to 0x%8.8x", 125 dev->offset, mrq.CardOffset); 126 mrq.Page = 0; 127 if( (ret = pcmcia_map_mem_page(win, &mrq)) != CS_SUCCESS) { 128 cs_error(dev->link.handle, MapMemPage, ret); 129 return NULL; 130 } 131 dev->offset = mrq.CardOffset; 132 } 133 return dev->win_base + (to & (dev->win_size-1)); 134 } 135 136 137 static map_word pcmcia_read8_remap(struct map_info *map, unsigned long ofs) 138 { 139 caddr_t addr; 140 map_word d = {{0}}; 141 142 addr = remap_window(map, ofs); 143 if(!addr) 144 return d; 145 146 d.x[0] = readb(addr); 147 DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%02x", ofs, addr, d.x[0]); 148 return d; 149 } 150 151 152 static map_word pcmcia_read16_remap(struct map_info *map, unsigned long ofs) 153 { 154 caddr_t addr; 155 map_word d = {{0}}; 156 157 addr = remap_window(map, ofs); 158 if(!addr) 159 return d; 160 161 d.x[0] = readw(addr); 162 DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%04x", ofs, addr, d.x[0]); 163 return d; 164 } 165 166 167 static void pcmcia_copy_from_remap(struct map_info *map, void *to, unsigned long from, ssize_t len) 168 { 169 struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1; 170 unsigned long win_size = dev->win_size; 171 172 DEBUG(3, "to = %p from = %lu len = %u", to, from, len); 173 while(len) { 174 int toread = win_size - (from & (win_size-1)); 175 caddr_t addr; 176 177 if(toread > len) 178 toread = len; 179 180 addr = remap_window(map, from); 181 if(!addr) 182 return; 183 184 DEBUG(4, "memcpy from %p to %p len = %d", addr, to, toread); 185 memcpy_fromio(to, addr, toread); 186 len -= toread; 187 to += toread; 188 from += toread; 189 } 190 } 191 192 193 static void pcmcia_write8_remap(struct map_info *map, map_word d, unsigned long adr) 194 { 195 caddr_t addr = remap_window(map, adr); 196 197 if(!addr) 198 return; 199 200 DEBUG(3, "adr = 0x%08lx (%p) data = 0x%02x", adr, addr, d.x[0]); 201 writeb(d.x[0], addr); 202 } 203 204 205 static void pcmcia_write16_remap(struct map_info *map, map_word d, unsigned long adr) 206 { 207 caddr_t addr = remap_window(map, adr); 208 if(!addr) 209 return; 210 211 DEBUG(3, "adr = 0x%08lx (%p) data = 0x%04x", adr, addr, d.x[0]); 212 writew(d.x[0], addr); 213 } 214 215 216 static void pcmcia_copy_to_remap(struct map_info *map, unsigned long to, const void *from, ssize_t len) 217 { 218 struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1; 219 unsigned long win_size = dev->win_size; 220 221 DEBUG(3, "to = %lu from = %p len = %u", to, from, len); 222 while(len) { 223 int towrite = win_size - (to & (win_size-1)); 224 caddr_t addr; 225 226 if(towrite > len) 227 towrite = len; 228 229 addr = remap_window(map, to); 230 if(!addr) 231 return; 232 233 DEBUG(4, "memcpy from %p to %p len = %d", from, addr, towrite); 234 memcpy_toio(addr, from, towrite); 235 len -= towrite; 236 to += towrite; 237 from += towrite; 238 } 239 } 240 241 242 /* read/write{8,16} copy_{from,to} routines with direct access */ 243 244 #define DEV_REMOVED(x) (!(*(u_int *)x->map_priv_1 & DEV_PRESENT)) 245 246 static map_word pcmcia_read8(struct map_info *map, unsigned long ofs) 247 { 248 caddr_t win_base = (caddr_t)map->map_priv_2; 249 map_word d = {{0}}; 250 251 if(DEV_REMOVED(map)) 252 return d; 253 254 d.x[0] = readb(win_base + ofs); 255 DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%02x", ofs, win_base + ofs, d.x[0]); 256 return d; 257 } 258 259 260 static map_word pcmcia_read16(struct map_info *map, unsigned long ofs) 261 { 262 caddr_t win_base = (caddr_t)map->map_priv_2; 263 map_word d = {{0}}; 264 265 if(DEV_REMOVED(map)) 266 return d; 267 268 d.x[0] = readw(win_base + ofs); 269 DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%04x", ofs, win_base + ofs, d.x[0]); 270 return d; 271 } 272 273 274 static void pcmcia_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len) 275 { 276 caddr_t win_base = (caddr_t)map->map_priv_2; 277 278 if(DEV_REMOVED(map)) 279 return; 280 281 DEBUG(3, "to = %p from = %lu len = %u", to, from, len); 282 memcpy_fromio(to, win_base + from, len); 283 } 284 285 286 static void pcmcia_write8(struct map_info *map, u8 d, unsigned long adr) 287 { 288 caddr_t win_base = (caddr_t)map->map_priv_2; 289 290 if(DEV_REMOVED(map)) 291 return; 292 293 DEBUG(3, "adr = 0x%08lx (%p) data = 0x%02x", adr, win_base + adr, d); 294 writeb(d, win_base + adr); 295 } 296 297 298 static void pcmcia_write16(struct map_info *map, u16 d, unsigned long adr) 299 { 300 caddr_t win_base = (caddr_t)map->map_priv_2; 301 302 if(DEV_REMOVED(map)) 303 return; 304 305 DEBUG(3, "adr = 0x%08lx (%p) data = 0x%04x", adr, win_base + adr, d); 306 writew(d, win_base + adr); 307 } 308 309 310 static void pcmcia_copy_to(struct map_info *map, unsigned long to, const void *from, ssize_t len) 311 { 312 caddr_t win_base = (caddr_t)map->map_priv_2; 313 314 if(DEV_REMOVED(map)) 315 return; 316 317 DEBUG(3, "to = %lu from = %p len = %u", to, from, len); 318 memcpy_toio(win_base + to, from, len); 319 } 320 321 322 static void pcmciamtd_set_vpp(struct map_info *map, int on) 323 { 324 struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1; 325 dev_link_t *link = &dev->link; 326 modconf_t mod; 327 int ret; 328 329 mod.Attributes = CONF_VPP1_CHANGE_VALID | CONF_VPP2_CHANGE_VALID; 330 mod.Vcc = 0; 331 mod.Vpp1 = mod.Vpp2 = on ? dev->vpp : 0; 332 333 DEBUG(2, "dev = %p on = %d vpp = %d\n", dev, on, dev->vpp); 334 ret = pcmcia_modify_configuration(link->handle, &mod); 335 if(ret != CS_SUCCESS) { 336 cs_error(link->handle, ModifyConfiguration, ret); 337 } 338 } 339 340 341 /* After a card is removed, pcmciamtd_release() will unregister the 342 * device, and release the PCMCIA configuration. If the device is 343 * still open, this will be postponed until it is closed. 344 */ 345 346 static void pcmciamtd_release(dev_link_t *link) 347 { 348 struct pcmciamtd_dev *dev = link->priv; 349 350 DEBUG(3, "link = 0x%p", link); 351 352 if (link->win) { 353 if(dev->win_base) { 354 iounmap(dev->win_base); 355 dev->win_base = NULL; 356 } 357 pcmcia_release_window(link->win); 358 } 359 pcmcia_release_configuration(link->handle); 360 link->state &= ~DEV_CONFIG; 361 } 362 363 364 static void card_settings(struct pcmciamtd_dev *dev, dev_link_t *link, int *new_name) 365 { 366 int rc; 367 tuple_t tuple; 368 cisparse_t parse; 369 u_char buf[64]; 370 371 tuple.Attributes = 0; 372 tuple.TupleData = (cisdata_t *)buf; 373 tuple.TupleDataMax = sizeof(buf); 374 tuple.TupleOffset = 0; 375 tuple.DesiredTuple = RETURN_FIRST_TUPLE; 376 377 rc = pcmcia_get_first_tuple(link->handle, &tuple); 378 while(rc == CS_SUCCESS) { 379 rc = pcmcia_get_tuple_data(link->handle, &tuple); 380 if(rc != CS_SUCCESS) { 381 cs_error(link->handle, GetTupleData, rc); 382 break; 383 } 384 rc = pcmcia_parse_tuple(link->handle, &tuple, &parse); 385 if(rc != CS_SUCCESS) { 386 cs_error(link->handle, ParseTuple, rc); 387 break; 388 } 389 390 switch(tuple.TupleCode) { 391 case CISTPL_FORMAT: { 392 cistpl_format_t *t = &parse.format; 393 (void)t; /* Shut up, gcc */ 394 DEBUG(2, "Format type: %u, Error Detection: %u, offset = %u, length =%u", 395 t->type, t->edc, t->offset, t->length); 396 break; 397 398 } 399 400 case CISTPL_DEVICE: { 401 cistpl_device_t *t = &parse.device; 402 int i; 403 DEBUG(2, "Common memory:"); 404 dev->pcmcia_map.size = t->dev[0].size; 405 for(i = 0; i < t->ndev; i++) { 406 DEBUG(2, "Region %d, type = %u", i, t->dev[i].type); 407 DEBUG(2, "Region %d, wp = %u", i, t->dev[i].wp); 408 DEBUG(2, "Region %d, speed = %u ns", i, t->dev[i].speed); 409 DEBUG(2, "Region %d, size = %u bytes", i, t->dev[i].size); 410 } 411 break; 412 } 413 414 case CISTPL_VERS_1: { 415 cistpl_vers_1_t *t = &parse.version_1; 416 int i; 417 if(t->ns) { 418 dev->mtd_name[0] = '\0'; 419 for(i = 0; i < t->ns; i++) { 420 if(i) 421 strcat(dev->mtd_name, " "); 422 strcat(dev->mtd_name, t->str+t->ofs[i]); 423 } 424 } 425 DEBUG(2, "Found name: %s", dev->mtd_name); 426 break; 427 } 428 429 case CISTPL_JEDEC_C: { 430 cistpl_jedec_t *t = &parse.jedec; 431 int i; 432 for(i = 0; i < t->nid; i++) { 433 DEBUG(2, "JEDEC: 0x%02x 0x%02x", t->id[i].mfr, t->id[i].info); 434 } 435 break; 436 } 437 438 case CISTPL_DEVICE_GEO: { 439 cistpl_device_geo_t *t = &parse.device_geo; 440 int i; 441 dev->pcmcia_map.bankwidth = t->geo[0].buswidth; 442 for(i = 0; i < t->ngeo; i++) { 443 DEBUG(2, "region: %d bankwidth = %u", i, t->geo[i].buswidth); 444 DEBUG(2, "region: %d erase_block = %u", i, t->geo[i].erase_block); 445 DEBUG(2, "region: %d read_block = %u", i, t->geo[i].read_block); 446 DEBUG(2, "region: %d write_block = %u", i, t->geo[i].write_block); 447 DEBUG(2, "region: %d partition = %u", i, t->geo[i].partition); 448 DEBUG(2, "region: %d interleave = %u", i, t->geo[i].interleave); 449 } 450 break; 451 } 452 453 default: 454 DEBUG(2, "Unknown tuple code %d", tuple.TupleCode); 455 } 456 457 rc = pcmcia_get_next_tuple(link->handle, &tuple); 458 } 459 if(!dev->pcmcia_map.size) 460 dev->pcmcia_map.size = MAX_PCMCIA_ADDR; 461 462 if(!dev->pcmcia_map.bankwidth) 463 dev->pcmcia_map.bankwidth = 2; 464 465 if(force_size) { 466 dev->pcmcia_map.size = force_size << 20; 467 DEBUG(2, "size forced to %dM", force_size); 468 } 469 470 if(bankwidth) { 471 dev->pcmcia_map.bankwidth = bankwidth; 472 DEBUG(2, "bankwidth forced to %d", bankwidth); 473 } 474 475 dev->pcmcia_map.name = dev->mtd_name; 476 if(!dev->mtd_name[0]) { 477 strcpy(dev->mtd_name, "PCMCIA Memory card"); 478 *new_name = 1; 479 } 480 481 DEBUG(1, "Device: Size: %lu Width:%d Name: %s", 482 dev->pcmcia_map.size, dev->pcmcia_map.bankwidth << 3, dev->mtd_name); 483 } 484 485 486 /* pcmciamtd_config() is scheduled to run after a CARD_INSERTION event 487 * is received, to configure the PCMCIA socket, and to make the 488 * MTD device available to the system. 489 */ 490 491 #define CS_CHECK(fn, ret) \ 492 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0) 493 494 static void pcmciamtd_config(dev_link_t *link) 495 { 496 struct pcmciamtd_dev *dev = link->priv; 497 struct mtd_info *mtd = NULL; 498 cs_status_t status; 499 win_req_t req; 500 int last_ret = 0, last_fn = 0; 501 int ret; 502 int i; 503 config_info_t t; 504 static char *probes[] = { "jedec_probe", "cfi_probe" }; 505 cisinfo_t cisinfo; 506 int new_name = 0; 507 508 DEBUG(3, "link=0x%p", link); 509 510 /* Configure card */ 511 link->state |= DEV_CONFIG; 512 513 DEBUG(2, "Validating CIS"); 514 ret = pcmcia_validate_cis(link->handle, &cisinfo); 515 if(ret != CS_SUCCESS) { 516 cs_error(link->handle, GetTupleData, ret); 517 } else { 518 DEBUG(2, "ValidateCIS found %d chains", cisinfo.Chains); 519 } 520 521 card_settings(dev, link, &new_name); 522 523 dev->pcmcia_map.phys = NO_XIP; 524 dev->pcmcia_map.copy_from = pcmcia_copy_from_remap; 525 dev->pcmcia_map.copy_to = pcmcia_copy_to_remap; 526 if (dev->pcmcia_map.bankwidth == 1) { 527 dev->pcmcia_map.read = pcmcia_read8_remap; 528 dev->pcmcia_map.write = pcmcia_write8_remap; 529 } else { 530 dev->pcmcia_map.read = pcmcia_read16_remap; 531 dev->pcmcia_map.write = pcmcia_write16_remap; 532 } 533 if(setvpp == 1) 534 dev->pcmcia_map.set_vpp = pcmciamtd_set_vpp; 535 536 /* Request a memory window for PCMCIA. Some architeures can map windows upto the maximum 537 that PCMCIA can support (64MiB) - this is ideal and we aim for a window the size of the 538 whole card - otherwise we try smaller windows until we succeed */ 539 540 req.Attributes = WIN_MEMORY_TYPE_CM | WIN_ENABLE; 541 req.Attributes |= (dev->pcmcia_map.bankwidth == 1) ? WIN_DATA_WIDTH_8 : WIN_DATA_WIDTH_16; 542 req.Base = 0; 543 req.AccessSpeed = mem_speed; 544 link->win = (window_handle_t)link->handle; 545 req.Size = (force_size) ? force_size << 20 : MAX_PCMCIA_ADDR; 546 dev->win_size = 0; 547 548 do { 549 int ret; 550 DEBUG(2, "requesting window with size = %dKiB memspeed = %d", 551 req.Size >> 10, req.AccessSpeed); 552 ret = pcmcia_request_window(&link->handle, &req, &link->win); 553 DEBUG(2, "ret = %d dev->win_size = %d", ret, dev->win_size); 554 if(ret) { 555 req.Size >>= 1; 556 } else { 557 DEBUG(2, "Got window of size %dKiB", req.Size >> 10); 558 dev->win_size = req.Size; 559 break; 560 } 561 } while(req.Size >= 0x1000); 562 563 DEBUG(2, "dev->win_size = %d", dev->win_size); 564 565 if(!dev->win_size) { 566 err("Cant allocate memory window"); 567 pcmciamtd_release(link); 568 return; 569 } 570 DEBUG(1, "Allocated a window of %dKiB", dev->win_size >> 10); 571 572 /* Get write protect status */ 573 CS_CHECK(GetStatus, pcmcia_get_status(link->handle, &status)); 574 DEBUG(2, "status value: 0x%x window handle = 0x%8.8lx", 575 status.CardState, (unsigned long)link->win); 576 dev->win_base = ioremap(req.Base, req.Size); 577 if(!dev->win_base) { 578 err("ioremap(%lu, %u) failed", req.Base, req.Size); 579 pcmciamtd_release(link); 580 return; 581 } 582 DEBUG(1, "mapped window dev = %p req.base = 0x%lx base = %p size = 0x%x", 583 dev, req.Base, dev->win_base, req.Size); 584 585 dev->offset = 0; 586 dev->pcmcia_map.map_priv_1 = (unsigned long)dev; 587 dev->pcmcia_map.map_priv_2 = (unsigned long)link->win; 588 589 DEBUG(2, "Getting configuration"); 590 CS_CHECK(GetConfigurationInfo, pcmcia_get_configuration_info(link->handle, &t)); 591 DEBUG(2, "Vcc = %d Vpp1 = %d Vpp2 = %d", t.Vcc, t.Vpp1, t.Vpp2); 592 dev->vpp = (vpp) ? vpp : t.Vpp1; 593 link->conf.Attributes = 0; 594 link->conf.Vcc = t.Vcc; 595 if(setvpp == 2) { 596 link->conf.Vpp1 = dev->vpp; 597 link->conf.Vpp2 = dev->vpp; 598 } else { 599 link->conf.Vpp1 = 0; 600 link->conf.Vpp2 = 0; 601 } 602 603 link->conf.IntType = INT_MEMORY; 604 link->conf.ConfigBase = t.ConfigBase; 605 link->conf.Status = t.Status; 606 link->conf.Pin = t.Pin; 607 link->conf.Copy = t.Copy; 608 link->conf.ExtStatus = t.ExtStatus; 609 link->conf.ConfigIndex = 0; 610 link->conf.Present = t.Present; 611 DEBUG(2, "Setting Configuration"); 612 ret = pcmcia_request_configuration(link->handle, &link->conf); 613 if(ret != CS_SUCCESS) { 614 cs_error(link->handle, RequestConfiguration, ret); 615 } 616 617 if(mem_type == 1) { 618 mtd = do_map_probe("map_ram", &dev->pcmcia_map); 619 } else if(mem_type == 2) { 620 mtd = do_map_probe("map_rom", &dev->pcmcia_map); 621 } else { 622 for(i = 0; i < sizeof(probes) / sizeof(char *); i++) { 623 DEBUG(1, "Trying %s", probes[i]); 624 mtd = do_map_probe(probes[i], &dev->pcmcia_map); 625 if(mtd) 626 break; 627 628 DEBUG(1, "FAILED: %s", probes[i]); 629 } 630 } 631 632 if(!mtd) { 633 DEBUG(1, "Cant find an MTD"); 634 pcmciamtd_release(link); 635 return; 636 } 637 638 dev->mtd_info = mtd; 639 mtd->owner = THIS_MODULE; 640 641 if(new_name) { 642 int size = 0; 643 char unit = ' '; 644 /* Since we are using a default name, make it better by adding in the 645 size */ 646 if(mtd->size < 1048576) { /* <1MiB in size, show size in KiB */ 647 size = mtd->size >> 10; 648 unit = 'K'; 649 } else { 650 size = mtd->size >> 20; 651 unit = 'M'; 652 } 653 snprintf(dev->mtd_name, sizeof(dev->mtd_name), "%d%ciB %s", size, unit, "PCMCIA Memory card"); 654 } 655 656 /* If the memory found is fits completely into the mapped PCMCIA window, 657 use the faster non-remapping read/write functions */ 658 if(mtd->size <= dev->win_size) { 659 DEBUG(1, "Using non remapping memory functions"); 660 dev->pcmcia_map.map_priv_1 = (unsigned long)&(dev->link.state); 661 dev->pcmcia_map.map_priv_2 = (unsigned long)dev->win_base; 662 if (dev->pcmcia_map.bankwidth == 1) { 663 dev->pcmcia_map.read = pcmcia_read8; 664 dev->pcmcia_map.write = pcmcia_write8; 665 } else { 666 dev->pcmcia_map.read = pcmcia_read16; 667 dev->pcmcia_map.write = pcmcia_write16; 668 } 669 dev->pcmcia_map.copy_from = pcmcia_copy_from; 670 dev->pcmcia_map.copy_to = pcmcia_copy_to; 671 } 672 673 if(add_mtd_device(mtd)) { 674 map_destroy(mtd); 675 dev->mtd_info = NULL; 676 err("Couldnt register MTD device"); 677 pcmciamtd_release(link); 678 return; 679 } 680 snprintf(dev->node.dev_name, sizeof(dev->node.dev_name), "mtd%d", mtd->index); 681 info("mtd%d: %s", mtd->index, mtd->name); 682 link->state &= ~DEV_CONFIG_PENDING; 683 link->dev = &dev->node; 684 return; 685 686 cs_failed: 687 cs_error(link->handle, last_fn, last_ret); 688 err("CS Error, exiting"); 689 pcmciamtd_release(link); 690 return; 691 } 692 693 694 /* The card status event handler. Mostly, this schedules other 695 * stuff to run after an event is received. A CARD_REMOVAL event 696 * also sets some flags to discourage the driver from trying 697 * to talk to the card any more. 698 */ 699 700 static int pcmciamtd_event(event_t event, int priority, 701 event_callback_args_t *args) 702 { 703 dev_link_t *link = args->client_data; 704 705 DEBUG(1, "event=0x%06x", event); 706 switch (event) { 707 case CS_EVENT_CARD_REMOVAL: 708 DEBUG(2, "EVENT_CARD_REMOVAL"); 709 link->state &= ~DEV_PRESENT; 710 if (link->state & DEV_CONFIG) { 711 struct pcmciamtd_dev *dev = link->priv; 712 if(dev->mtd_info) { 713 del_mtd_device(dev->mtd_info); 714 info("mtd%d: Removed", dev->mtd_info->index); 715 } 716 pcmciamtd_release(link); 717 } 718 break; 719 case CS_EVENT_CARD_INSERTION: 720 DEBUG(2, "EVENT_CARD_INSERTION"); 721 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING; 722 pcmciamtd_config(link); 723 break; 724 case CS_EVENT_PM_SUSPEND: 725 DEBUG(2, "EVENT_PM_SUSPEND"); 726 link->state |= DEV_SUSPEND; 727 /* Fall through... */ 728 case CS_EVENT_RESET_PHYSICAL: 729 DEBUG(2, "EVENT_RESET_PHYSICAL"); 730 /* get_lock(link); */ 731 break; 732 case CS_EVENT_PM_RESUME: 733 DEBUG(2, "EVENT_PM_RESUME"); 734 link->state &= ~DEV_SUSPEND; 735 /* Fall through... */ 736 case CS_EVENT_CARD_RESET: 737 DEBUG(2, "EVENT_CARD_RESET"); 738 /* free_lock(link); */ 739 break; 740 default: 741 DEBUG(2, "Unknown event %d", event); 742 } 743 return 0; 744 } 745 746 747 /* This deletes a driver "instance". The device is de-registered 748 * with Card Services. If it has been released, all local data 749 * structures are freed. Otherwise, the structures will be freed 750 * when the device is released. 751 */ 752 753 static void pcmciamtd_detach(dev_link_t *link) 754 { 755 DEBUG(3, "link=0x%p", link); 756 757 if(link->state & DEV_CONFIG) { 758 pcmciamtd_release(link); 759 } 760 761 if (link->handle) { 762 int ret; 763 DEBUG(2, "Deregistering with card services"); 764 ret = pcmcia_deregister_client(link->handle); 765 if (ret != CS_SUCCESS) 766 cs_error(link->handle, DeregisterClient, ret); 767 } 768 769 link->state |= DEV_STALE_LINK; 770 } 771 772 773 /* pcmciamtd_attach() creates an "instance" of the driver, allocating 774 * local data structures for one device. The device is registered 775 * with Card Services. 776 */ 777 778 static dev_link_t *pcmciamtd_attach(void) 779 { 780 struct pcmciamtd_dev *dev; 781 dev_link_t *link; 782 client_reg_t client_reg; 783 int ret; 784 785 /* Create new memory card device */ 786 dev = kmalloc(sizeof(*dev), GFP_KERNEL); 787 if (!dev) return NULL; 788 DEBUG(1, "dev=0x%p", dev); 789 790 memset(dev, 0, sizeof(*dev)); 791 link = &dev->link; 792 link->priv = dev; 793 794 link->conf.Attributes = 0; 795 link->conf.IntType = INT_MEMORY; 796 797 link->next = dev_list; 798 dev_list = link; 799 800 /* Register with Card Services */ 801 client_reg.dev_info = &dev_info; 802 client_reg.Version = 0x0210; 803 client_reg.event_callback_args.client_data = link; 804 DEBUG(2, "Calling RegisterClient"); 805 ret = pcmcia_register_client(&link->handle, &client_reg); 806 if (ret != 0) { 807 cs_error(link->handle, RegisterClient, ret); 808 pcmciamtd_detach(link); 809 return NULL; 810 } 811 DEBUG(2, "link = %p", link); 812 return link; 813 } 814 815 static struct pcmcia_device_id pcmciamtd_ids[] = { 816 PCMCIA_DEVICE_FUNC_ID(1), 817 PCMCIA_DEVICE_PROD_ID123("IO DATA", "PCS-2M", "2MB SRAM", 0x547e66dc, 0x1fed36cd, 0x36eadd21), 818 PCMCIA_DEVICE_PROD_ID12("IBM", "2MB SRAM", 0xb569a6e5, 0x36eadd21), 819 PCMCIA_DEVICE_PROD_ID12("IBM", "4MB FLASH", 0xb569a6e5, 0x8bc54d2a), 820 PCMCIA_DEVICE_PROD_ID12("IBM", "8MB FLASH", 0xb569a6e5, 0x6df1be3e), 821 PCMCIA_DEVICE_PROD_ID12("Intel", "S2E20SW", 0x816cc815, 0xd14c9dcf), 822 PCMCIA_DEVICE_PROD_ID12("Intel", "S2E8 SW", 0x816cc815, 0xa2d7dedb), 823 PCMCIA_DEVICE_PROD_ID12("intel", "SERIES2-02 ", 0x40ade711, 0x145cea5c), 824 PCMCIA_DEVICE_PROD_ID12("intel", "SERIES2-04 ", 0x40ade711, 0x42064dda), 825 PCMCIA_DEVICE_PROD_ID12("intel", "SERIES2-20 ", 0x40ade711, 0x25ee5cb0), 826 PCMCIA_DEVICE_PROD_ID12("intel", "VALUE SERIES 100 ", 0x40ade711, 0xdf8506d8), 827 PCMCIA_DEVICE_PROD_ID12("KINGMAX TECHNOLOGY INC.", "SRAM 256K Bytes", 0x54d0c69c, 0xad12c29c), 828 PCMCIA_DEVICE_PROD_ID12("Maxtor", "MAXFL MobileMax Flash Memory Card", 0xb68968c8, 0x2dfb47b0), 829 PCMCIA_DEVICE_PROD_ID12("SEIKO EPSON", "WWB101EN20", 0xf9876baf, 0xad0b207b), 830 PCMCIA_DEVICE_PROD_ID12("SEIKO EPSON", "WWB513EN20", 0xf9876baf, 0xe8d884ad), 831 PCMCIA_DEVICE_PROD_ID12("Starfish, Inc.", "REX-3000", 0x05ddca47, 0xe7d67bca), 832 PCMCIA_DEVICE_PROD_ID12("Starfish, Inc.", "REX-4100", 0x05ddca47, 0x7bc32944), 833 /* the following was commented out in pcmcia-cs-3.2.7 */ 834 /* PCMCIA_DEVICE_PROD_ID12("RATOC Systems,Inc.", "SmartMedia ADAPTER PC Card", 0xf4a2fefe, 0x5885b2ae), */ 835 #ifdef CONFIG_MTD_PCMCIA_ANONYMOUS 836 { .match_flags = PCMCIA_DEV_ID_MATCH_ANONYMOUS, }, 837 #endif 838 PCMCIA_DEVICE_NULL 839 }; 840 MODULE_DEVICE_TABLE(pcmcia, pcmciamtd_ids); 841 842 static struct pcmcia_driver pcmciamtd_driver = { 843 .drv = { 844 .name = "pcmciamtd" 845 }, 846 .attach = pcmciamtd_attach, 847 .event = pcmciamtd_event, 848 .detach = pcmciamtd_detach, 849 .owner = THIS_MODULE, 850 .id_table = pcmciamtd_ids, 851 }; 852 853 854 static int __init init_pcmciamtd(void) 855 { 856 info(DRIVER_DESC " " DRIVER_VERSION); 857 858 if(bankwidth && bankwidth != 1 && bankwidth != 2) { 859 info("bad bankwidth (%d), using default", bankwidth); 860 bankwidth = 2; 861 } 862 if(force_size && (force_size < 1 || force_size > 64)) { 863 info("bad force_size (%d), using default", force_size); 864 force_size = 0; 865 } 866 if(mem_type && mem_type != 1 && mem_type != 2) { 867 info("bad mem_type (%d), using default", mem_type); 868 mem_type = 0; 869 } 870 return pcmcia_register_driver(&pcmciamtd_driver); 871 } 872 873 874 static void __exit exit_pcmciamtd(void) 875 { 876 DEBUG(1, DRIVER_DESC " unloading"); 877 pcmcia_unregister_driver(&pcmciamtd_driver); 878 BUG_ON(dev_list != NULL); 879 } 880 881 module_init(init_pcmciamtd); 882 module_exit(exit_pcmciamtd); 883