1 /* 2 * $Id: pcmciamtd.c,v 1.51 2004/07/12 22:38:29 dwmw2 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/version.h> 22 #include <pcmcia/cs_types.h> 23 #include <pcmcia/cs.h> 24 #include <pcmcia/cistpl.h> 25 #include <pcmcia/ds.h> 26 27 #include <linux/mtd/map.h> 28 #include <linux/mtd/mtd.h> 29 30 #ifdef CONFIG_MTD_DEBUG 31 static int debug = CONFIG_MTD_DEBUG_VERBOSE; 32 MODULE_PARM(debug, "i"); 33 MODULE_PARM_DESC(debug, "Set Debug Level 0=quiet, 5=noisy"); 34 #undef DEBUG 35 #define DEBUG(n, format, arg...) \ 36 if (n <= debug) { \ 37 printk(KERN_DEBUG __FILE__ ":%s(): " format "\n", __FUNCTION__ , ## arg); \ 38 } 39 40 #else 41 #undef DEBUG 42 #define DEBUG(n, arg...) 43 static const int debug = 0; 44 #endif 45 46 #define err(format, arg...) printk(KERN_ERR "pcmciamtd: " format "\n" , ## arg) 47 #define info(format, arg...) printk(KERN_INFO "pcmciamtd: " format "\n" , ## arg) 48 #define warn(format, arg...) printk(KERN_WARNING "pcmciamtd: " format "\n" , ## arg) 49 50 51 #define DRIVER_DESC "PCMCIA Flash memory card driver" 52 #define DRIVER_VERSION "$Revision: 1.51 $" 53 54 /* Size of the PCMCIA address space: 26 bits = 64 MB */ 55 #define MAX_PCMCIA_ADDR 0x4000000 56 57 struct pcmciamtd_dev { 58 dev_link_t link; /* PCMCIA link */ 59 dev_node_t node; /* device node */ 60 caddr_t win_base; /* ioremapped address of PCMCIA window */ 61 unsigned int win_size; /* size of window */ 62 unsigned int offset; /* offset into card the window currently points at */ 63 struct map_info pcmcia_map; 64 struct mtd_info *mtd_info; 65 int vpp; 66 char mtd_name[sizeof(struct cistpl_vers_1_t)]; 67 }; 68 69 70 static dev_info_t dev_info = "pcmciamtd"; 71 static dev_link_t *dev_list; 72 73 /* Module parameters */ 74 75 /* 2 = do 16-bit transfers, 1 = do 8-bit transfers */ 76 static int bankwidth = 2; 77 78 /* Speed of memory accesses, in ns */ 79 static int mem_speed; 80 81 /* Force the size of an SRAM card */ 82 static int force_size; 83 84 /* Force Vpp */ 85 static int vpp; 86 87 /* Set Vpp */ 88 static int setvpp; 89 90 /* Force card to be treated as FLASH, ROM or RAM */ 91 static int mem_type; 92 93 MODULE_LICENSE("GPL"); 94 MODULE_AUTHOR("Simon Evans <spse@secret.org.uk>"); 95 MODULE_DESCRIPTION(DRIVER_DESC); 96 MODULE_PARM(bankwidth, "i"); 97 MODULE_PARM_DESC(bankwidth, "Set bankwidth (1=8 bit, 2=16 bit, default=2)"); 98 MODULE_PARM(mem_speed, "i"); 99 MODULE_PARM_DESC(mem_speed, "Set memory access speed in ns"); 100 MODULE_PARM(force_size, "i"); 101 MODULE_PARM_DESC(force_size, "Force size of card in MiB (1-64)"); 102 MODULE_PARM(setvpp, "i"); 103 MODULE_PARM_DESC(setvpp, "Set Vpp (0=Never, 1=On writes, 2=Always on, default=0)"); 104 MODULE_PARM(vpp, "i"); 105 MODULE_PARM_DESC(vpp, "Vpp value in 1/10ths eg 33=3.3V 120=12V (Dangerous)"); 106 MODULE_PARM(mem_type, "i"); 107 MODULE_PARM_DESC(mem_type, "Set Memory type (0=Flash, 1=RAM, 2=ROM, default=0)"); 108 109 110 /* read/write{8,16} copy_{from,to} routines with window remapping to access whole card */ 111 static caddr_t remap_window(struct map_info *map, unsigned long to) 112 { 113 struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1; 114 window_handle_t win = (window_handle_t)map->map_priv_2; 115 memreq_t mrq; 116 int ret; 117 118 if(!(dev->link.state & DEV_PRESENT)) { 119 DEBUG(1, "device removed state = 0x%4.4X", dev->link.state); 120 return 0; 121 } 122 123 mrq.CardOffset = to & ~(dev->win_size-1); 124 if(mrq.CardOffset != dev->offset) { 125 DEBUG(2, "Remapping window from 0x%8.8x to 0x%8.8x", 126 dev->offset, mrq.CardOffset); 127 mrq.Page = 0; 128 if( (ret = pcmcia_map_mem_page(win, &mrq)) != CS_SUCCESS) { 129 cs_error(dev->link.handle, MapMemPage, ret); 130 return NULL; 131 } 132 dev->offset = mrq.CardOffset; 133 } 134 return dev->win_base + (to & (dev->win_size-1)); 135 } 136 137 138 static map_word pcmcia_read8_remap(struct map_info *map, unsigned long ofs) 139 { 140 caddr_t addr; 141 map_word d = {{0}}; 142 143 addr = remap_window(map, ofs); 144 if(!addr) 145 return d; 146 147 d.x[0] = readb(addr); 148 DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%02x", ofs, addr, d.x[0]); 149 return d; 150 } 151 152 153 static map_word pcmcia_read16_remap(struct map_info *map, unsigned long ofs) 154 { 155 caddr_t addr; 156 map_word d = {{0}}; 157 158 addr = remap_window(map, ofs); 159 if(!addr) 160 return d; 161 162 d.x[0] = readw(addr); 163 DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%04x", ofs, addr, d.x[0]); 164 return d; 165 } 166 167 168 static void pcmcia_copy_from_remap(struct map_info *map, void *to, unsigned long from, ssize_t len) 169 { 170 struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1; 171 unsigned long win_size = dev->win_size; 172 173 DEBUG(3, "to = %p from = %lu len = %u", to, from, len); 174 while(len) { 175 int toread = win_size - (from & (win_size-1)); 176 caddr_t addr; 177 178 if(toread > len) 179 toread = len; 180 181 addr = remap_window(map, from); 182 if(!addr) 183 return; 184 185 DEBUG(4, "memcpy from %p to %p len = %d", addr, to, toread); 186 memcpy_fromio(to, addr, toread); 187 len -= toread; 188 to += toread; 189 from += toread; 190 } 191 } 192 193 194 static void pcmcia_write8_remap(struct map_info *map, map_word d, unsigned long adr) 195 { 196 caddr_t addr = remap_window(map, adr); 197 198 if(!addr) 199 return; 200 201 DEBUG(3, "adr = 0x%08lx (%p) data = 0x%02x", adr, addr, d.x[0]); 202 writeb(d.x[0], addr); 203 } 204 205 206 static void pcmcia_write16_remap(struct map_info *map, map_word d, unsigned long adr) 207 { 208 caddr_t addr = remap_window(map, adr); 209 if(!addr) 210 return; 211 212 DEBUG(3, "adr = 0x%08lx (%p) data = 0x%04x", adr, addr, d.x[0]); 213 writew(d.x[0], addr); 214 } 215 216 217 static void pcmcia_copy_to_remap(struct map_info *map, unsigned long to, const void *from, ssize_t len) 218 { 219 struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1; 220 unsigned long win_size = dev->win_size; 221 222 DEBUG(3, "to = %lu from = %p len = %u", to, from, len); 223 while(len) { 224 int towrite = win_size - (to & (win_size-1)); 225 caddr_t addr; 226 227 if(towrite > len) 228 towrite = len; 229 230 addr = remap_window(map, to); 231 if(!addr) 232 return; 233 234 DEBUG(4, "memcpy from %p to %p len = %d", from, addr, towrite); 235 memcpy_toio(addr, from, towrite); 236 len -= towrite; 237 to += towrite; 238 from += towrite; 239 } 240 } 241 242 243 /* read/write{8,16} copy_{from,to} routines with direct access */ 244 245 #define DEV_REMOVED(x) (!(*(u_int *)x->map_priv_1 & DEV_PRESENT)) 246 247 static map_word pcmcia_read8(struct map_info *map, unsigned long ofs) 248 { 249 caddr_t win_base = (caddr_t)map->map_priv_2; 250 map_word d = {{0}}; 251 252 if(DEV_REMOVED(map)) 253 return d; 254 255 d.x[0] = readb(win_base + ofs); 256 DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%02x", ofs, win_base + ofs, d.x[0]); 257 return d; 258 } 259 260 261 static map_word pcmcia_read16(struct map_info *map, unsigned long ofs) 262 { 263 caddr_t win_base = (caddr_t)map->map_priv_2; 264 map_word d = {{0}}; 265 266 if(DEV_REMOVED(map)) 267 return d; 268 269 d.x[0] = readw(win_base + ofs); 270 DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%04x", ofs, win_base + ofs, d.x[0]); 271 return d; 272 } 273 274 275 static void pcmcia_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len) 276 { 277 caddr_t win_base = (caddr_t)map->map_priv_2; 278 279 if(DEV_REMOVED(map)) 280 return; 281 282 DEBUG(3, "to = %p from = %lu len = %u", to, from, len); 283 memcpy_fromio(to, win_base + from, len); 284 } 285 286 287 static void pcmcia_write8(struct map_info *map, u8 d, unsigned long adr) 288 { 289 caddr_t win_base = (caddr_t)map->map_priv_2; 290 291 if(DEV_REMOVED(map)) 292 return; 293 294 DEBUG(3, "adr = 0x%08lx (%p) data = 0x%02x", adr, win_base + adr, d); 295 writeb(d, win_base + adr); 296 } 297 298 299 static void pcmcia_write16(struct map_info *map, u16 d, unsigned long adr) 300 { 301 caddr_t win_base = (caddr_t)map->map_priv_2; 302 303 if(DEV_REMOVED(map)) 304 return; 305 306 DEBUG(3, "adr = 0x%08lx (%p) data = 0x%04x", adr, win_base + adr, d); 307 writew(d, win_base + adr); 308 } 309 310 311 static void pcmcia_copy_to(struct map_info *map, unsigned long to, const void *from, ssize_t len) 312 { 313 caddr_t win_base = (caddr_t)map->map_priv_2; 314 315 if(DEV_REMOVED(map)) 316 return; 317 318 DEBUG(3, "to = %lu from = %p len = %u", to, from, len); 319 memcpy_toio(win_base + to, from, len); 320 } 321 322 323 static void pcmciamtd_set_vpp(struct map_info *map, int on) 324 { 325 struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1; 326 dev_link_t *link = &dev->link; 327 modconf_t mod; 328 int ret; 329 330 mod.Attributes = CONF_VPP1_CHANGE_VALID | CONF_VPP2_CHANGE_VALID; 331 mod.Vcc = 0; 332 mod.Vpp1 = mod.Vpp2 = on ? dev->vpp : 0; 333 334 DEBUG(2, "dev = %p on = %d vpp = %d\n", dev, on, dev->vpp); 335 ret = pcmcia_modify_configuration(link->handle, &mod); 336 if(ret != CS_SUCCESS) { 337 cs_error(link->handle, ModifyConfiguration, ret); 338 } 339 } 340 341 342 /* After a card is removed, pcmciamtd_release() will unregister the 343 * device, and release the PCMCIA configuration. If the device is 344 * still open, this will be postponed until it is closed. 345 */ 346 347 static void pcmciamtd_release(dev_link_t *link) 348 { 349 struct pcmciamtd_dev *dev = link->priv; 350 351 DEBUG(3, "link = 0x%p", link); 352 353 if (link->win) { 354 if(dev->win_base) { 355 iounmap(dev->win_base); 356 dev->win_base = NULL; 357 } 358 pcmcia_release_window(link->win); 359 } 360 pcmcia_release_configuration(link->handle); 361 link->state &= ~DEV_CONFIG; 362 } 363 364 365 static void card_settings(struct pcmciamtd_dev *dev, dev_link_t *link, int *new_name) 366 { 367 int rc; 368 tuple_t tuple; 369 cisparse_t parse; 370 u_char buf[64]; 371 372 tuple.Attributes = 0; 373 tuple.TupleData = (cisdata_t *)buf; 374 tuple.TupleDataMax = sizeof(buf); 375 tuple.TupleOffset = 0; 376 tuple.DesiredTuple = RETURN_FIRST_TUPLE; 377 378 rc = pcmcia_get_first_tuple(link->handle, &tuple); 379 while(rc == CS_SUCCESS) { 380 rc = pcmcia_get_tuple_data(link->handle, &tuple); 381 if(rc != CS_SUCCESS) { 382 cs_error(link->handle, GetTupleData, rc); 383 break; 384 } 385 rc = pcmcia_parse_tuple(link->handle, &tuple, &parse); 386 if(rc != CS_SUCCESS) { 387 cs_error(link->handle, ParseTuple, rc); 388 break; 389 } 390 391 switch(tuple.TupleCode) { 392 case CISTPL_FORMAT: { 393 cistpl_format_t *t = &parse.format; 394 (void)t; /* Shut up, gcc */ 395 DEBUG(2, "Format type: %u, Error Detection: %u, offset = %u, length =%u", 396 t->type, t->edc, t->offset, t->length); 397 break; 398 399 } 400 401 case CISTPL_DEVICE: { 402 cistpl_device_t *t = &parse.device; 403 int i; 404 DEBUG(2, "Common memory:"); 405 dev->pcmcia_map.size = t->dev[0].size; 406 for(i = 0; i < t->ndev; i++) { 407 DEBUG(2, "Region %d, type = %u", i, t->dev[i].type); 408 DEBUG(2, "Region %d, wp = %u", i, t->dev[i].wp); 409 DEBUG(2, "Region %d, speed = %u ns", i, t->dev[i].speed); 410 DEBUG(2, "Region %d, size = %u bytes", i, t->dev[i].size); 411 } 412 break; 413 } 414 415 case CISTPL_VERS_1: { 416 cistpl_vers_1_t *t = &parse.version_1; 417 int i; 418 if(t->ns) { 419 dev->mtd_name[0] = '\0'; 420 for(i = 0; i < t->ns; i++) { 421 if(i) 422 strcat(dev->mtd_name, " "); 423 strcat(dev->mtd_name, t->str+t->ofs[i]); 424 } 425 } 426 DEBUG(2, "Found name: %s", dev->mtd_name); 427 break; 428 } 429 430 case CISTPL_JEDEC_C: { 431 cistpl_jedec_t *t = &parse.jedec; 432 int i; 433 for(i = 0; i < t->nid; i++) { 434 DEBUG(2, "JEDEC: 0x%02x 0x%02x", t->id[i].mfr, t->id[i].info); 435 } 436 break; 437 } 438 439 case CISTPL_DEVICE_GEO: { 440 cistpl_device_geo_t *t = &parse.device_geo; 441 int i; 442 dev->pcmcia_map.bankwidth = t->geo[0].buswidth; 443 for(i = 0; i < t->ngeo; i++) { 444 DEBUG(2, "region: %d bankwidth = %u", i, t->geo[i].buswidth); 445 DEBUG(2, "region: %d erase_block = %u", i, t->geo[i].erase_block); 446 DEBUG(2, "region: %d read_block = %u", i, t->geo[i].read_block); 447 DEBUG(2, "region: %d write_block = %u", i, t->geo[i].write_block); 448 DEBUG(2, "region: %d partition = %u", i, t->geo[i].partition); 449 DEBUG(2, "region: %d interleave = %u", i, t->geo[i].interleave); 450 } 451 break; 452 } 453 454 default: 455 DEBUG(2, "Unknown tuple code %d", tuple.TupleCode); 456 } 457 458 rc = pcmcia_get_next_tuple(link->handle, &tuple); 459 } 460 if(!dev->pcmcia_map.size) 461 dev->pcmcia_map.size = MAX_PCMCIA_ADDR; 462 463 if(!dev->pcmcia_map.bankwidth) 464 dev->pcmcia_map.bankwidth = 2; 465 466 if(force_size) { 467 dev->pcmcia_map.size = force_size << 20; 468 DEBUG(2, "size forced to %dM", force_size); 469 } 470 471 if(bankwidth) { 472 dev->pcmcia_map.bankwidth = bankwidth; 473 DEBUG(2, "bankwidth forced to %d", bankwidth); 474 } 475 476 dev->pcmcia_map.name = dev->mtd_name; 477 if(!dev->mtd_name[0]) { 478 strcpy(dev->mtd_name, "PCMCIA Memory card"); 479 *new_name = 1; 480 } 481 482 DEBUG(1, "Device: Size: %lu Width:%d Name: %s", 483 dev->pcmcia_map.size, dev->pcmcia_map.bankwidth << 3, dev->mtd_name); 484 } 485 486 487 /* pcmciamtd_config() is scheduled to run after a CARD_INSERTION event 488 * is received, to configure the PCMCIA socket, and to make the 489 * MTD device available to the system. 490 */ 491 492 #define CS_CHECK(fn, ret) \ 493 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0) 494 495 static void pcmciamtd_config(dev_link_t *link) 496 { 497 struct pcmciamtd_dev *dev = link->priv; 498 struct mtd_info *mtd = NULL; 499 cs_status_t status; 500 win_req_t req; 501 int last_ret = 0, last_fn = 0; 502 int ret; 503 int i; 504 config_info_t t; 505 static char *probes[] = { "jedec_probe", "cfi_probe" }; 506 cisinfo_t cisinfo; 507 int new_name = 0; 508 509 DEBUG(3, "link=0x%p", link); 510 511 /* Configure card */ 512 link->state |= DEV_CONFIG; 513 514 DEBUG(2, "Validating CIS"); 515 ret = pcmcia_validate_cis(link->handle, &cisinfo); 516 if(ret != CS_SUCCESS) { 517 cs_error(link->handle, GetTupleData, ret); 518 } else { 519 DEBUG(2, "ValidateCIS found %d chains", cisinfo.Chains); 520 } 521 522 card_settings(dev, link, &new_name); 523 524 dev->pcmcia_map.phys = NO_XIP; 525 dev->pcmcia_map.copy_from = pcmcia_copy_from_remap; 526 dev->pcmcia_map.copy_to = pcmcia_copy_to_remap; 527 if (dev->pcmcia_map.bankwidth == 1) { 528 dev->pcmcia_map.read = pcmcia_read8_remap; 529 dev->pcmcia_map.write = pcmcia_write8_remap; 530 } else { 531 dev->pcmcia_map.read = pcmcia_read16_remap; 532 dev->pcmcia_map.write = pcmcia_write16_remap; 533 } 534 if(setvpp == 1) 535 dev->pcmcia_map.set_vpp = pcmciamtd_set_vpp; 536 537 /* Request a memory window for PCMCIA. Some architeures can map windows upto the maximum 538 that PCMCIA can support (64MiB) - this is ideal and we aim for a window the size of the 539 whole card - otherwise we try smaller windows until we succeed */ 540 541 req.Attributes = WIN_MEMORY_TYPE_CM | WIN_ENABLE; 542 req.Attributes |= (dev->pcmcia_map.bankwidth == 1) ? WIN_DATA_WIDTH_8 : WIN_DATA_WIDTH_16; 543 req.Base = 0; 544 req.AccessSpeed = mem_speed; 545 link->win = (window_handle_t)link->handle; 546 req.Size = (force_size) ? force_size << 20 : MAX_PCMCIA_ADDR; 547 dev->win_size = 0; 548 549 do { 550 int ret; 551 DEBUG(2, "requesting window with size = %dKiB memspeed = %d", 552 req.Size >> 10, req.AccessSpeed); 553 ret = pcmcia_request_window(&link->handle, &req, &link->win); 554 DEBUG(2, "ret = %d dev->win_size = %d", ret, dev->win_size); 555 if(ret) { 556 req.Size >>= 1; 557 } else { 558 DEBUG(2, "Got window of size %dKiB", req.Size >> 10); 559 dev->win_size = req.Size; 560 break; 561 } 562 } while(req.Size >= 0x1000); 563 564 DEBUG(2, "dev->win_size = %d", dev->win_size); 565 566 if(!dev->win_size) { 567 err("Cant allocate memory window"); 568 pcmciamtd_release(link); 569 return; 570 } 571 DEBUG(1, "Allocated a window of %dKiB", dev->win_size >> 10); 572 573 /* Get write protect status */ 574 CS_CHECK(GetStatus, pcmcia_get_status(link->handle, &status)); 575 DEBUG(2, "status value: 0x%x window handle = 0x%8.8lx", 576 status.CardState, (unsigned long)link->win); 577 dev->win_base = ioremap(req.Base, req.Size); 578 if(!dev->win_base) { 579 err("ioremap(%lu, %u) failed", req.Base, req.Size); 580 pcmciamtd_release(link); 581 return; 582 } 583 DEBUG(1, "mapped window dev = %p req.base = 0x%lx base = %p size = 0x%x", 584 dev, req.Base, dev->win_base, req.Size); 585 586 dev->offset = 0; 587 dev->pcmcia_map.map_priv_1 = (unsigned long)dev; 588 dev->pcmcia_map.map_priv_2 = (unsigned long)link->win; 589 590 DEBUG(2, "Getting configuration"); 591 CS_CHECK(GetConfigurationInfo, pcmcia_get_configuration_info(link->handle, &t)); 592 DEBUG(2, "Vcc = %d Vpp1 = %d Vpp2 = %d", t.Vcc, t.Vpp1, t.Vpp2); 593 dev->vpp = (vpp) ? vpp : t.Vpp1; 594 link->conf.Attributes = 0; 595 link->conf.Vcc = t.Vcc; 596 if(setvpp == 2) { 597 link->conf.Vpp1 = dev->vpp; 598 link->conf.Vpp2 = dev->vpp; 599 } else { 600 link->conf.Vpp1 = 0; 601 link->conf.Vpp2 = 0; 602 } 603 604 link->conf.IntType = INT_MEMORY; 605 link->conf.ConfigBase = t.ConfigBase; 606 link->conf.Status = t.Status; 607 link->conf.Pin = t.Pin; 608 link->conf.Copy = t.Copy; 609 link->conf.ExtStatus = t.ExtStatus; 610 link->conf.ConfigIndex = 0; 611 link->conf.Present = t.Present; 612 DEBUG(2, "Setting Configuration"); 613 ret = pcmcia_request_configuration(link->handle, &link->conf); 614 if(ret != CS_SUCCESS) { 615 cs_error(link->handle, RequestConfiguration, ret); 616 } 617 618 if(mem_type == 1) { 619 mtd = do_map_probe("map_ram", &dev->pcmcia_map); 620 } else if(mem_type == 2) { 621 mtd = do_map_probe("map_rom", &dev->pcmcia_map); 622 } else { 623 for(i = 0; i < sizeof(probes) / sizeof(char *); i++) { 624 DEBUG(1, "Trying %s", probes[i]); 625 mtd = do_map_probe(probes[i], &dev->pcmcia_map); 626 if(mtd) 627 break; 628 629 DEBUG(1, "FAILED: %s", probes[i]); 630 } 631 } 632 633 if(!mtd) { 634 DEBUG(1, "Cant find an MTD"); 635 pcmciamtd_release(link); 636 return; 637 } 638 639 dev->mtd_info = mtd; 640 mtd->owner = THIS_MODULE; 641 642 if(new_name) { 643 int size = 0; 644 char unit = ' '; 645 /* Since we are using a default name, make it better by adding in the 646 size */ 647 if(mtd->size < 1048576) { /* <1MiB in size, show size in KiB */ 648 size = mtd->size >> 10; 649 unit = 'K'; 650 } else { 651 size = mtd->size >> 20; 652 unit = 'M'; 653 } 654 snprintf(dev->mtd_name, sizeof(dev->mtd_name), "%d%ciB %s", size, unit, "PCMCIA Memory card"); 655 } 656 657 /* If the memory found is fits completely into the mapped PCMCIA window, 658 use the faster non-remapping read/write functions */ 659 if(mtd->size <= dev->win_size) { 660 DEBUG(1, "Using non remapping memory functions"); 661 dev->pcmcia_map.map_priv_1 = (unsigned long)&(dev->link.state); 662 dev->pcmcia_map.map_priv_2 = (unsigned long)dev->win_base; 663 if (dev->pcmcia_map.bankwidth == 1) { 664 dev->pcmcia_map.read = pcmcia_read8; 665 dev->pcmcia_map.write = pcmcia_write8; 666 } else { 667 dev->pcmcia_map.read = pcmcia_read16; 668 dev->pcmcia_map.write = pcmcia_write16; 669 } 670 dev->pcmcia_map.copy_from = pcmcia_copy_from; 671 dev->pcmcia_map.copy_to = pcmcia_copy_to; 672 } 673 674 if(add_mtd_device(mtd)) { 675 map_destroy(mtd); 676 dev->mtd_info = NULL; 677 err("Couldnt register MTD device"); 678 pcmciamtd_release(link); 679 return; 680 } 681 snprintf(dev->node.dev_name, sizeof(dev->node.dev_name), "mtd%d", mtd->index); 682 info("mtd%d: %s", mtd->index, mtd->name); 683 link->state &= ~DEV_CONFIG_PENDING; 684 link->dev = &dev->node; 685 return; 686 687 cs_failed: 688 cs_error(link->handle, last_fn, last_ret); 689 err("CS Error, exiting"); 690 pcmciamtd_release(link); 691 return; 692 } 693 694 695 /* The card status event handler. Mostly, this schedules other 696 * stuff to run after an event is received. A CARD_REMOVAL event 697 * also sets some flags to discourage the driver from trying 698 * to talk to the card any more. 699 */ 700 701 static int pcmciamtd_event(event_t event, int priority, 702 event_callback_args_t *args) 703 { 704 dev_link_t *link = args->client_data; 705 706 DEBUG(1, "event=0x%06x", event); 707 switch (event) { 708 case CS_EVENT_CARD_REMOVAL: 709 DEBUG(2, "EVENT_CARD_REMOVAL"); 710 link->state &= ~DEV_PRESENT; 711 if (link->state & DEV_CONFIG) { 712 struct pcmciamtd_dev *dev = link->priv; 713 if(dev->mtd_info) { 714 del_mtd_device(dev->mtd_info); 715 info("mtd%d: Removed", dev->mtd_info->index); 716 } 717 pcmciamtd_release(link); 718 } 719 break; 720 case CS_EVENT_CARD_INSERTION: 721 DEBUG(2, "EVENT_CARD_INSERTION"); 722 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING; 723 pcmciamtd_config(link); 724 break; 725 case CS_EVENT_PM_SUSPEND: 726 DEBUG(2, "EVENT_PM_SUSPEND"); 727 link->state |= DEV_SUSPEND; 728 /* Fall through... */ 729 case CS_EVENT_RESET_PHYSICAL: 730 DEBUG(2, "EVENT_RESET_PHYSICAL"); 731 /* get_lock(link); */ 732 break; 733 case CS_EVENT_PM_RESUME: 734 DEBUG(2, "EVENT_PM_RESUME"); 735 link->state &= ~DEV_SUSPEND; 736 /* Fall through... */ 737 case CS_EVENT_CARD_RESET: 738 DEBUG(2, "EVENT_CARD_RESET"); 739 /* free_lock(link); */ 740 break; 741 default: 742 DEBUG(2, "Unknown event %d", event); 743 } 744 return 0; 745 } 746 747 748 /* This deletes a driver "instance". The device is de-registered 749 * with Card Services. If it has been released, all local data 750 * structures are freed. Otherwise, the structures will be freed 751 * when the device is released. 752 */ 753 754 static void pcmciamtd_detach(dev_link_t *link) 755 { 756 DEBUG(3, "link=0x%p", link); 757 758 if(link->state & DEV_CONFIG) { 759 pcmciamtd_release(link); 760 } 761 762 if (link->handle) { 763 int ret; 764 DEBUG(2, "Deregistering with card services"); 765 ret = pcmcia_deregister_client(link->handle); 766 if (ret != CS_SUCCESS) 767 cs_error(link->handle, DeregisterClient, ret); 768 } 769 770 link->state |= DEV_STALE_LINK; 771 } 772 773 774 /* pcmciamtd_attach() creates an "instance" of the driver, allocating 775 * local data structures for one device. The device is registered 776 * with Card Services. 777 */ 778 779 static dev_link_t *pcmciamtd_attach(void) 780 { 781 struct pcmciamtd_dev *dev; 782 dev_link_t *link; 783 client_reg_t client_reg; 784 int ret; 785 786 /* Create new memory card device */ 787 dev = kmalloc(sizeof(*dev), GFP_KERNEL); 788 if (!dev) return NULL; 789 DEBUG(1, "dev=0x%p", dev); 790 791 memset(dev, 0, sizeof(*dev)); 792 link = &dev->link; 793 link->priv = dev; 794 795 link->conf.Attributes = 0; 796 link->conf.IntType = INT_MEMORY; 797 798 link->next = dev_list; 799 dev_list = link; 800 801 /* Register with Card Services */ 802 client_reg.dev_info = &dev_info; 803 client_reg.EventMask = 804 CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET | 805 CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL | 806 CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME; 807 client_reg.event_handler = &pcmciamtd_event; 808 client_reg.Version = 0x0210; 809 client_reg.event_callback_args.client_data = link; 810 DEBUG(2, "Calling RegisterClient"); 811 ret = pcmcia_register_client(&link->handle, &client_reg); 812 if (ret != 0) { 813 cs_error(link->handle, RegisterClient, ret); 814 pcmciamtd_detach(link); 815 return NULL; 816 } 817 DEBUG(2, "link = %p", link); 818 return link; 819 } 820 821 static struct pcmcia_device_id pcmciamtd_ids[] = { 822 PCMCIA_DEVICE_FUNC_ID(1), 823 PCMCIA_DEVICE_PROD_ID123("IO DATA", "PCS-2M", "2MB SRAM", 0x547e66dc, 0x1fed36cd, 0x36eadd21), 824 PCMCIA_DEVICE_PROD_ID12("IBM", "2MB SRAM", 0xb569a6e5, 0x36eadd21), 825 PCMCIA_DEVICE_PROD_ID12("IBM", "4MB FLASH", 0xb569a6e5, 0x8bc54d2a), 826 PCMCIA_DEVICE_PROD_ID12("IBM", "8MB FLASH", 0xb569a6e5, 0x6df1be3e), 827 PCMCIA_DEVICE_PROD_ID12("Intel", "S2E20SW", 0x816cc815, 0xd14c9dcf), 828 PCMCIA_DEVICE_PROD_ID12("Intel", "S2E8 SW", 0x816cc815, 0xa2d7dedb), 829 PCMCIA_DEVICE_PROD_ID12("intel", "SERIES2-02 ", 0x40ade711, 0x145cea5c), 830 PCMCIA_DEVICE_PROD_ID12("intel", "SERIES2-04 ", 0x40ade711, 0x42064dda), 831 PCMCIA_DEVICE_PROD_ID12("intel", "SERIES2-20 ", 0x40ade711, 0x25ee5cb0), 832 PCMCIA_DEVICE_PROD_ID12("intel", "VALUE SERIES 100 ", 0x40ade711, 0xdf8506d8), 833 PCMCIA_DEVICE_PROD_ID12("KINGMAX TECHNOLOGY INC.", "SRAM 256K Bytes", 0x54d0c69c, 0xad12c29c), 834 PCMCIA_DEVICE_PROD_ID12("Maxtor", "MAXFL MobileMax Flash Memory Card", 0xb68968c8, 0x2dfb47b0), 835 PCMCIA_DEVICE_PROD_ID12("SEIKO EPSON", "WWB101EN20", 0xf9876baf, 0xad0b207b), 836 PCMCIA_DEVICE_PROD_ID12("SEIKO EPSON", "WWB513EN20", 0xf9876baf, 0xe8d884ad), 837 PCMCIA_DEVICE_PROD_ID12("Starfish, Inc.", "REX-3000", 0x05ddca47, 0xe7d67bca), 838 PCMCIA_DEVICE_PROD_ID12("Starfish, Inc.", "REX-4100", 0x05ddca47, 0x7bc32944), 839 /* the following was commented out in pcmcia-cs-3.2.7 */ 840 /* PCMCIA_DEVICE_PROD_ID12("RATOC Systems,Inc.", "SmartMedia ADAPTER PC Card", 0xf4a2fefe, 0x5885b2ae), */ 841 #ifdef CONFIG_MTD_PCMCIA_ANONYMOUS 842 { .match_flags = PCMCIA_DEV_ID_MATCH_ANONYMOUS, }, 843 #endif 844 PCMCIA_DEVICE_NULL 845 }; 846 MODULE_DEVICE_TABLE(pcmcia, pcmciamtd_ids); 847 848 static struct pcmcia_driver pcmciamtd_driver = { 849 .drv = { 850 .name = "pcmciamtd" 851 }, 852 .attach = pcmciamtd_attach, 853 .detach = pcmciamtd_detach, 854 .owner = THIS_MODULE, 855 .id_table = pcmciamtd_ids, 856 }; 857 858 859 static int __init init_pcmciamtd(void) 860 { 861 info(DRIVER_DESC " " DRIVER_VERSION); 862 863 if(bankwidth && bankwidth != 1 && bankwidth != 2) { 864 info("bad bankwidth (%d), using default", bankwidth); 865 bankwidth = 2; 866 } 867 if(force_size && (force_size < 1 || force_size > 64)) { 868 info("bad force_size (%d), using default", force_size); 869 force_size = 0; 870 } 871 if(mem_type && mem_type != 1 && mem_type != 2) { 872 info("bad mem_type (%d), using default", mem_type); 873 mem_type = 0; 874 } 875 return pcmcia_register_driver(&pcmciamtd_driver); 876 } 877 878 879 static void __exit exit_pcmciamtd(void) 880 { 881 DEBUG(1, DRIVER_DESC " unloading"); 882 pcmcia_unregister_driver(&pcmciamtd_driver); 883 BUG_ON(dev_list != NULL); 884 } 885 886 module_init(init_pcmciamtd); 887 module_exit(exit_pcmciamtd); 888