drivers/mtd/maps/pcmciamtd.c

   1 /*
   2  * pcmciamtd.c - MTD driver for PCMCIA flash memory cards
   3  *
   4  * Author: Simon Evans <spse@secret.org.uk>
   5  *
   6  * Copyright (C) 2002 Simon Evans
   7  *
   8  * Licence: GPL
   9  *
  10  */
  11
  12 #include <linux/module.h>
  13 #include <linux/slab.h>
  14 #include <linux/timer.h>
  15 #include <linux/init.h>
  16 #include <asm/io.h>
  17 #include <asm/system.h>
  18
  19 #include <pcmcia/cistpl.h>
  20 #include <pcmcia/ds.h>
  21
  22 #include <linux/mtd/map.h>
  23 #include <linux/mtd/mtd.h>
  24
  25 #ifdef CONFIG_MTD_DEBUG
  26 static int debug = CONFIG_MTD_DEBUG_VERBOSE;
  27 module_param(debug, int, 0);
  28 MODULE_PARM_DESC(debug, "Set Debug Level 0=quiet, 5=noisy");
  29 #undef DEBUG
  30 #define DEBUG(n, format, arg...) \
  31         if (n <= debug) {        \
  32                 printk(KERN_DEBUG __FILE__ ":%s(): " format "\n", __func__ , ## arg); \
  33         }
  34
  35 #else
  36 #undef DEBUG
  37 #define DEBUG(n, arg...)
  38 static const int debug = 0;
  39 #endif
  40
  41 #define info(format, arg...) printk(KERN_INFO "pcmciamtd: " format "\n" , ## arg)
  42
  43 #define DRIVER_DESC     "PCMCIA Flash memory card driver"
  44
  45 /* Size of the PCMCIA address space: 26 bits = 64 MB */
  46 #define MAX_PCMCIA_ADDR 0x4000000
  47
  48 struct pcmciamtd_dev {
  49         struct pcmcia_device    *p_dev;
  50         caddr_t         win_base;       /* ioremapped address of PCMCIA window */
  51         unsigned int    win_size;       /* size of window */
  52         unsigned int    offset;         /* offset into card the window currently points at */
  53         struct map_info pcmcia_map;
  54         struct mtd_info *mtd_info;
  55         int             vpp;
  56         char            mtd_name[sizeof(struct cistpl_vers_1_t)];
  57 };
  58
  59
  60 /* Module parameters */
  61
  62 /* 2 = do 16-bit transfers, 1 = do 8-bit transfers */
  63 static int bankwidth = 2;
  64
  65 /* Speed of memory accesses, in ns */
  66 static int mem_speed;
  67
  68 /* Force the size of an SRAM card */
  69 static int force_size;
  70
  71 /* Force Vpp */
  72 static int vpp;
  73
  74 /* Set Vpp */
  75 static int setvpp;
  76
  77 /* Force card to be treated as FLASH, ROM or RAM */
  78 static int mem_type;
  79
  80 MODULE_LICENSE("GPL");
  81 MODULE_AUTHOR("Simon Evans <spse@secret.org.uk>");
  82 MODULE_DESCRIPTION(DRIVER_DESC);
  83 module_param(bankwidth, int, 0);
  84 MODULE_PARM_DESC(bankwidth, "Set bankwidth (1=8 bit, 2=16 bit, default=2)");
  85 module_param(mem_speed, int, 0);
  86 MODULE_PARM_DESC(mem_speed, "Set memory access speed in ns");
  87 module_param(force_size, int, 0);
  88 MODULE_PARM_DESC(force_size, "Force size of card in MiB (1-64)");
  89 module_param(setvpp, int, 0);
  90 MODULE_PARM_DESC(setvpp, "Set Vpp (0=Never, 1=On writes, 2=Always on, default=0)");
  91 module_param(vpp, int, 0);
  92 MODULE_PARM_DESC(vpp, "Vpp value in 1/10ths eg 33=3.3V 120=12V (Dangerous)");
  93 module_param(mem_type, int, 0);
  94 MODULE_PARM_DESC(mem_type, "Set Memory type (0=Flash, 1=RAM, 2=ROM, default=0)");
  95
  96
  97 /* read/write{8,16} copy_{from,to} routines with window remapping
  98  * to access whole card
  99  */
 100 static caddr_t remap_window(struct map_info *map, unsigned long to)
 101 {
 102         struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1;
 103         struct resource *win = (struct resource *) map->map_priv_2;
 104         unsigned int offset;
 105         int ret;
 106
 107         if (!pcmcia_dev_present(dev->p_dev)) {
 108                 DEBUG(1, "device removed");
 109                 return 0;
 110         }
 111
 112         offset = to & ~(dev->win_size-1);
 113         if (offset != dev->offset) {
 114                 DEBUG(2, "Remapping window from 0x%8.8x to 0x%8.8x",
 115                       dev->offset, offset);
 116                 ret = pcmcia_map_mem_page(dev->p_dev, win, offset);
 117                 if (ret != 0)
 118                         return NULL;
 119                 dev->offset = offset;
 120         }
 121         return dev->win_base + (to & (dev->win_size-1));
 122 }
 123
 124
 125 static map_word pcmcia_read8_remap(struct map_info *map, unsigned long ofs)
 126 {
 127         caddr_t addr;
 128         map_word d = {{0}};
 129
 130         addr = remap_window(map, ofs);
 131         if(!addr)
 132                 return d;
 133
 134         d.x[0] = readb(addr);
 135         DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%02lx", ofs, addr, d.x[0]);
 136         return d;
 137 }
 138
 139
 140 static map_word pcmcia_read16_remap(struct map_info *map, unsigned long ofs)
 141 {
 142         caddr_t addr;
 143         map_word d = {{0}};
 144
 145         addr = remap_window(map, ofs);
 146         if(!addr)
 147                 return d;
 148
 149         d.x[0] = readw(addr);
 150         DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%04lx", ofs, addr, d.x[0]);
 151         return d;
 152 }
 153
 154
 155 static void pcmcia_copy_from_remap(struct map_info *map, void *to, unsigned long from, ssize_t len)
 156 {
 157         struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1;
 158         unsigned long win_size = dev->win_size;
 159
 160         DEBUG(3, "to = %p from = %lu len = %zd", to, from, len);
 161         while(len) {
 162                 int toread = win_size - (from & (win_size-1));
 163                 caddr_t addr;
 164
 165                 if(toread > len)
 166                         toread = len;
 167
 168                 addr = remap_window(map, from);
 169                 if(!addr)
 170                         return;
 171
 172                 DEBUG(4, "memcpy from %p to %p len = %d", addr, to, toread);
 173                 memcpy_fromio(to, addr, toread);
 174                 len -= toread;
 175                 to += toread;
 176                 from += toread;
 177         }
 178 }
 179
 180
 181 static void pcmcia_write8_remap(struct map_info *map, map_word d, unsigned long adr)
 182 {
 183         caddr_t addr = remap_window(map, adr);
 184
 185         if(!addr)
 186                 return;
 187
 188         DEBUG(3, "adr = 0x%08lx (%p)  data = 0x%02lx", adr, addr, d.x[0]);
 189         writeb(d.x[0], addr);
 190 }
 191
 192
 193 static void pcmcia_write16_remap(struct map_info *map, map_word d, unsigned long adr)
 194 {
 195         caddr_t addr = remap_window(map, adr);
 196         if(!addr)
 197                 return;
 198
 199         DEBUG(3, "adr = 0x%08lx (%p)  data = 0x%04lx", adr, addr, d.x[0]);
 200         writew(d.x[0], addr);
 201 }
 202
 203
 204 static void pcmcia_copy_to_remap(struct map_info *map, unsigned long to, const void *from, ssize_t len)
 205 {
 206         struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1;
 207         unsigned long win_size = dev->win_size;
 208
 209         DEBUG(3, "to = %lu from = %p len = %zd", to, from, len);
 210         while(len) {
 211                 int towrite = win_size - (to & (win_size-1));
 212                 caddr_t addr;
 213
 214                 if(towrite > len)
 215                         towrite = len;
 216
 217                 addr = remap_window(map, to);
 218                 if(!addr)
 219                         return;
 220
 221                 DEBUG(4, "memcpy from %p to %p len = %d", from, addr, towrite);
 222                 memcpy_toio(addr, from, towrite);
 223                 len -= towrite;
 224                 to += towrite;
 225                 from += towrite;
 226         }
 227 }
 228
 229
 230 /* read/write{8,16} copy_{from,to} routines with direct access */
 231
 232 #define DEV_REMOVED(x)  (!(pcmcia_dev_present(((struct pcmciamtd_dev *)map->map_priv_1)->p_dev)))
 233
 234 static map_word pcmcia_read8(struct map_info *map, unsigned long ofs)
 235 {
 236         caddr_t win_base = (caddr_t)map->map_priv_2;
 237         map_word d = {{0}};
 238
 239         if(DEV_REMOVED(map))
 240                 return d;
 241
 242         d.x[0] = readb(win_base + ofs);
 243         DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%02lx",
 244               ofs, win_base + ofs, d.x[0]);
 245         return d;
 246 }
 247
 248
 249 static map_word pcmcia_read16(struct map_info *map, unsigned long ofs)
 250 {
 251         caddr_t win_base = (caddr_t)map->map_priv_2;
 252         map_word d = {{0}};
 253
 254         if(DEV_REMOVED(map))
 255                 return d;
 256
 257         d.x[0] = readw(win_base + ofs);
 258         DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%04lx",
 259               ofs, win_base + ofs, d.x[0]);
 260         return d;
 261 }
 262
 263
 264 static void pcmcia_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len)
 265 {
 266         caddr_t win_base = (caddr_t)map->map_priv_2;
 267
 268         if(DEV_REMOVED(map))
 269                 return;
 270
 271         DEBUG(3, "to = %p from = %lu len = %zd", to, from, len);
 272         memcpy_fromio(to, win_base + from, len);
 273 }
 274
 275
 276 static void pcmcia_write8(struct map_info *map, map_word d, unsigned long adr)
 277 {
 278         caddr_t win_base = (caddr_t)map->map_priv_2;
 279
 280         if(DEV_REMOVED(map))
 281                 return;
 282
 283         DEBUG(3, "adr = 0x%08lx (%p)  data = 0x%02lx",
 284               adr, win_base + adr, d.x[0]);
 285         writeb(d.x[0], win_base + adr);
 286 }
 287
 288
 289 static void pcmcia_write16(struct map_info *map, map_word d, unsigned long adr)
 290 {
 291         caddr_t win_base = (caddr_t)map->map_priv_2;
 292
 293         if(DEV_REMOVED(map))
 294                 return;
 295
 296         DEBUG(3, "adr = 0x%08lx (%p)  data = 0x%04lx",
 297               adr, win_base + adr, d.x[0]);
 298         writew(d.x[0], win_base + adr);
 299 }
 300
 301
 302 static void pcmcia_copy_to(struct map_info *map, unsigned long to, const void *from, ssize_t len)
 303 {
 304         caddr_t win_base = (caddr_t)map->map_priv_2;
 305
 306         if(DEV_REMOVED(map))
 307                 return;
 308
 309         DEBUG(3, "to = %lu from = %p len = %zd", to, from, len);
 310         memcpy_toio(win_base + to, from, len);
 311 }
 312
 313
 314 static void pcmciamtd_set_vpp(struct map_info *map, int on)
 315 {
 316         struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1;
 317         struct pcmcia_device *link = dev->p_dev;
 318
 319         DEBUG(2, "dev = %p on = %d vpp = %d\n", dev, on, dev->vpp);
 320         pcmcia_fixup_vpp(link, on ? dev->vpp : 0);
 321 }
 322
 323
 324 /* After a card is removed, pcmciamtd_release() will unregister the
 325  * device, and release the PCMCIA configuration.  If the device is
 326  * still open, this will be postponed until it is closed.
 327  */
 328
 329 static void pcmciamtd_release(struct pcmcia_device *link)
 330 {
 331         struct pcmciamtd_dev *dev = link->priv;
 332
 333         DEBUG(3, "link = 0x%p", link);
 334
 335         if (link->resource[2]->end) {
 336                 if(dev->win_base) {
 337                         iounmap(dev->win_base);
 338                         dev->win_base = NULL;
 339                 }
 340         }
 341         pcmcia_disable_device(link);
 342 }
 343
 344
 345 #ifdef CONFIG_MTD_DEBUG
 346 static int pcmciamtd_cistpl_format(struct pcmcia_device *p_dev,
 347                                 tuple_t *tuple,
 348                                 void *priv_data)
 349 {
 350         cisparse_t parse;
 351
 352         if (!pcmcia_parse_tuple(tuple, &parse)) {
 353                 cistpl_format_t *t = &parse.format;
 354                 (void)t; /* Shut up, gcc */
 355                 DEBUG(2, "Format type: %u, Error Detection: %u, offset = %u, length =%u",
 356                         t->type, t->edc, t->offset, t->length);
 357         }
 358         return -ENOSPC;
 359 }
 360
 361 static int pcmciamtd_cistpl_jedec(struct pcmcia_device *p_dev,
 362                                 tuple_t *tuple,
 363                                 void *priv_data)
 364 {
 365         cisparse_t parse;
 366         int i;
 367
 368         if (!pcmcia_parse_tuple(tuple, &parse)) {
 369                 cistpl_jedec_t *t = &parse.jedec;
 370                 for (i = 0; i < t->nid; i++)
 371                         DEBUG(2, "JEDEC: 0x%02x 0x%02x",
 372                               t->id[i].mfr, t->id[i].info);
 373         }
 374         return -ENOSPC;
 375 }
 376 #endif
 377
 378 static int pcmciamtd_cistpl_device(struct pcmcia_device *p_dev,
 379                                 tuple_t *tuple,
 380                                 void *priv_data)
 381 {
 382         struct pcmciamtd_dev *dev = priv_data;
 383         cisparse_t parse;
 384         cistpl_device_t *t = &parse.device;
 385         int i;
 386
 387         if (pcmcia_parse_tuple(tuple, &parse))
 388                 return -EINVAL;
 389
 390         DEBUG(2, "Common memory:");
 391         dev->pcmcia_map.size = t->dev[0].size;
 392         /* from here on: DEBUG only */
 393         for (i = 0; i < t->ndev; i++) {
 394                 DEBUG(2, "Region %d, type = %u", i, t->dev[i].type);
 395                 DEBUG(2, "Region %d, wp = %u", i, t->dev[i].wp);
 396                 DEBUG(2, "Region %d, speed = %u ns", i, t->dev[i].speed);
 397                 DEBUG(2, "Region %d, size = %u bytes", i, t->dev[i].size);
 398         }
 399         return 0;
 400 }
 401
 402 static int pcmciamtd_cistpl_geo(struct pcmcia_device *p_dev,
 403                                 tuple_t *tuple,
 404                                 void *priv_data)
 405 {
 406         struct pcmciamtd_dev *dev = priv_data;
 407         cisparse_t parse;
 408         cistpl_device_geo_t *t = &parse.device_geo;
 409         int i;
 410
 411         if (pcmcia_parse_tuple(tuple, &parse))
 412                 return -EINVAL;
 413
 414         dev->pcmcia_map.bankwidth = t->geo[0].buswidth;
 415         /* from here on: DEBUG only */
 416         for (i = 0; i < t->ngeo; i++) {
 417                 DEBUG(2, "region: %d bankwidth = %u", i, t->geo[i].buswidth);
 418                 DEBUG(2, "region: %d erase_block = %u", i, t->geo[i].erase_block);
 419                 DEBUG(2, "region: %d read_block = %u", i, t->geo[i].read_block);
 420                 DEBUG(2, "region: %d write_block = %u", i, t->geo[i].write_block);
 421                 DEBUG(2, "region: %d partition = %u", i, t->geo[i].partition);
 422                 DEBUG(2, "region: %d interleave = %u", i, t->geo[i].interleave);
 423         }
 424         return 0;
 425 }
 426
 427
 428 static void card_settings(struct pcmciamtd_dev *dev, struct pcmcia_device *p_dev, int *new_name)
 429 {
 430         int i;
 431
 432         if (p_dev->prod_id[0]) {
 433                 dev->mtd_name[0] = '\0';
 434                 for (i = 0; i < 4; i++) {
 435                         if (i)
 436                                 strcat(dev->mtd_name, " ");
 437                         if (p_dev->prod_id[i])
 438                                 strcat(dev->mtd_name, p_dev->prod_id[i]);
 439                 }
 440                 DEBUG(2, "Found name: %s", dev->mtd_name);
 441         }
 442
 443 #ifdef CONFIG_MTD_DEBUG
 444         pcmcia_loop_tuple(p_dev, CISTPL_FORMAT, pcmciamtd_cistpl_format, NULL);
 445         pcmcia_loop_tuple(p_dev, CISTPL_JEDEC_C, pcmciamtd_cistpl_jedec, NULL);
 446 #endif
 447         pcmcia_loop_tuple(p_dev, CISTPL_DEVICE, pcmciamtd_cistpl_device, dev);
 448         pcmcia_loop_tuple(p_dev, CISTPL_DEVICE_GEO, pcmciamtd_cistpl_geo, dev);
 449
 450         if(!dev->pcmcia_map.size)
 451                 dev->pcmcia_map.size = MAX_PCMCIA_ADDR;
 452
 453         if(!dev->pcmcia_map.bankwidth)
 454                 dev->pcmcia_map.bankwidth = 2;
 455
 456         if(force_size) {
 457                 dev->pcmcia_map.size = force_size << 20;
 458                 DEBUG(2, "size forced to %dM", force_size);
 459         }
 460
 461         if(bankwidth) {
 462                 dev->pcmcia_map.bankwidth = bankwidth;
 463                 DEBUG(2, "bankwidth forced to %d", bankwidth);
 464         }
 465
 466         dev->pcmcia_map.name = dev->mtd_name;
 467         if(!dev->mtd_name[0]) {
 468                 strcpy(dev->mtd_name, "PCMCIA Memory card");
 469                 *new_name = 1;
 470         }
 471
 472         DEBUG(1, "Device: Size: %lu Width:%d Name: %s",
 473               dev->pcmcia_map.size,
 474               dev->pcmcia_map.bankwidth << 3, dev->mtd_name);
 475 }
 476
 477
 478 /* pcmciamtd_config() is scheduled to run after a CARD_INSERTION event
 479  * is received, to configure the PCMCIA socket, and to make the
 480  * MTD device available to the system.
 481  */
 482
 483 static int pcmciamtd_config(struct pcmcia_device *link)
 484 {
 485         struct pcmciamtd_dev *dev = link->priv;
 486         struct mtd_info *mtd = NULL;
 487         int ret;
 488         int i, j = 0;
 489         static char *probes[] = { "jedec_probe", "cfi_probe" };
 490         int new_name = 0;
 491
 492         DEBUG(3, "link=0x%p", link);
 493
 494         card_settings(dev, link, &new_name);
 495
 496         dev->pcmcia_map.phys = NO_XIP;
 497         dev->pcmcia_map.copy_from = pcmcia_copy_from_remap;
 498         dev->pcmcia_map.copy_to = pcmcia_copy_to_remap;
 499         if (dev->pcmcia_map.bankwidth == 1) {
 500                 dev->pcmcia_map.read = pcmcia_read8_remap;
 501                 dev->pcmcia_map.write = pcmcia_write8_remap;
 502         } else {
 503                 dev->pcmcia_map.read = pcmcia_read16_remap;
 504                 dev->pcmcia_map.write = pcmcia_write16_remap;
 505         }
 506         if(setvpp == 1)
 507                 dev->pcmcia_map.set_vpp = pcmciamtd_set_vpp;
 508
 509         /* Request a memory window for PCMCIA. Some architeures can map windows
 510          * upto the maximum that PCMCIA can support (64MiB) - this is ideal and
 511          * we aim for a window the size of the whole card - otherwise we try
 512          * smaller windows until we succeed
 513          */
 514
 515         link->resource[2]->flags |=  WIN_MEMORY_TYPE_CM | WIN_ENABLE;
 516         link->resource[2]->flags |= (dev->pcmcia_map.bankwidth == 1) ?
 517                                         WIN_DATA_WIDTH_8 : WIN_DATA_WIDTH_16;
 518         link->resource[2]->start = 0;
 519         link->resource[2]->end = (force_size) ? force_size << 20 :
 520                                         MAX_PCMCIA_ADDR;
 521         dev->win_size = 0;
 522
 523         do {
 524                 int ret;
 525                 DEBUG(2, "requesting window with size = %luKiB memspeed = %d",
 526                         (unsigned long) resource_size(link->resource[2]) >> 10,
 527                         mem_speed);
 528                 ret = pcmcia_request_window(link, link->resource[2], mem_speed);
 529                 DEBUG(2, "ret = %d dev->win_size = %d", ret, dev->win_size);
 530                 if(ret) {
 531                         j++;
 532                         link->resource[2]->start = 0;
 533                         link->resource[2]->end = (force_size) ?
 534                                         force_size << 20 : MAX_PCMCIA_ADDR;
 535                         link->resource[2]->end >>= j;
 536                 } else {
 537                         DEBUG(2, "Got window of size %luKiB", (unsigned long)
 538                                 resource_size(link->resource[2]) >> 10);
 539                         dev->win_size = resource_size(link->resource[2]);
 540                         break;
 541                 }
 542         } while (link->resource[2]->end >= 0x1000);
 543
 544         DEBUG(2, "dev->win_size = %d", dev->win_size);
 545
 546         if(!dev->win_size) {
 547                 dev_err(&dev->p_dev->dev, "Cannot allocate memory window\n");
 548                 pcmciamtd_release(link);
 549                 return -ENODEV;
 550         }
 551         DEBUG(1, "Allocated a window of %dKiB", dev->win_size >> 10);
 552
 553         /* Get write protect status */
 554         dev->win_base = ioremap(link->resource[2]->start,
 555                                 resource_size(link->resource[2]));
 556         if(!dev->win_base) {
 557                 dev_err(&dev->p_dev->dev, "ioremap(%pR) failed\n",
 558                         link->resource[2]);
 559                 pcmciamtd_release(link);
 560                 return -ENODEV;
 561         }
 562         DEBUG(1, "mapped window dev = %p @ %pR, base = %p",
 563               dev, link->resource[2], dev->win_base);
 564
 565         dev->offset = 0;
 566         dev->pcmcia_map.map_priv_1 = (unsigned long)dev;
 567         dev->pcmcia_map.map_priv_2 = (unsigned long)link->resource[2];
 568
 569         dev->vpp = (vpp) ? vpp : link->socket->socket.Vpp;
 570         if(setvpp == 2) {
 571                 link->vpp = dev->vpp;
 572         } else {
 573                 link->vpp = 0;
 574         }
 575
 576         link->config_index = 0;
 577         DEBUG(2, "Setting Configuration");
 578         ret = pcmcia_enable_device(link);
 579         if (ret != 0) {
 580                 if (dev->win_base) {
 581                         iounmap(dev->win_base);
 582                         dev->win_base = NULL;
 583                 }
 584                 return -ENODEV;
 585         }
 586
 587         if(mem_type == 1) {
 588                 mtd = do_map_probe("map_ram", &dev->pcmcia_map);
 589         } else if(mem_type == 2) {
 590                 mtd = do_map_probe("map_rom", &dev->pcmcia_map);
 591         } else {
 592                 for(i = 0; i < ARRAY_SIZE(probes); i++) {
 593                         DEBUG(1, "Trying %s", probes[i]);
 594                         mtd = do_map_probe(probes[i], &dev->pcmcia_map);
 595                         if(mtd)
 596                                 break;
 597
 598                         DEBUG(1, "FAILED: %s", probes[i]);
 599                 }
 600         }
 601
 602         if(!mtd) {
 603                 DEBUG(1, "Can not find an MTD");
 604                 pcmciamtd_release(link);
 605                 return -ENODEV;
 606         }
 607
 608         dev->mtd_info = mtd;
 609         mtd->owner = THIS_MODULE;
 610
 611         if(new_name) {
 612                 int size = 0;
 613                 char unit = ' ';
 614                 /* Since we are using a default name, make it better by adding
 615                  * in the size
 616                  */
 617                 if(mtd->size < 1048576) { /* <1MiB in size, show size in KiB */
 618                         size = mtd->size >> 10;
 619                         unit = 'K';
 620                 } else {
 621                         size = mtd->size >> 20;
 622                         unit = 'M';
 623                 }
 624                 snprintf(dev->mtd_name, sizeof(dev->mtd_name), "%d%ciB %s", size, unit, "PCMCIA Memory card");
 625         }
 626
 627         /* If the memory found is fits completely into the mapped PCMCIA window,
 628            use the faster non-remapping read/write functions */
 629         if(mtd->size <= dev->win_size) {
 630                 DEBUG(1, "Using non remapping memory functions");
 631                 dev->pcmcia_map.map_priv_2 = (unsigned long)dev->win_base;
 632                 if (dev->pcmcia_map.bankwidth == 1) {
 633                         dev->pcmcia_map.read = pcmcia_read8;
 634                         dev->pcmcia_map.write = pcmcia_write8;
 635                 } else {
 636                         dev->pcmcia_map.read = pcmcia_read16;
 637                         dev->pcmcia_map.write = pcmcia_write16;
 638                 }
 639                 dev->pcmcia_map.copy_from = pcmcia_copy_from;
 640                 dev->pcmcia_map.copy_to = pcmcia_copy_to;
 641         }
 642
 643         if(add_mtd_device(mtd)) {
 644                 map_destroy(mtd);
 645                 dev->mtd_info = NULL;
 646                 dev_err(&dev->p_dev->dev,
 647                         "Could not register the MTD device\n");
 648                 pcmciamtd_release(link);
 649                 return -ENODEV;
 650         }
 651         dev_info(&dev->p_dev->dev, "mtd%d: %s\n", mtd->index, mtd->name);
 652         return 0;
 653
 654         dev_err(&dev->p_dev->dev, "CS Error, exiting\n");
 655         pcmciamtd_release(link);
 656         return -ENODEV;
 657 }
 658
 659
 660 static int pcmciamtd_suspend(struct pcmcia_device *dev)
 661 {
 662         DEBUG(2, "EVENT_PM_RESUME");
 663
 664         /* get_lock(link); */
 665
 666         return 0;
 667 }
 668
 669 static int pcmciamtd_resume(struct pcmcia_device *dev)
 670 {
 671         DEBUG(2, "EVENT_PM_SUSPEND");
 672
 673         /* free_lock(link); */
 674
 675         return 0;
 676 }
 677
 678
 679 /* This deletes a driver "instance".  The device is de-registered
 680  * with Card Services.  If it has been released, all local data
 681  * structures are freed.  Otherwise, the structures will be freed
 682  * when the device is released.
 683  */
 684
 685 static void pcmciamtd_detach(struct pcmcia_device *link)
 686 {
 687         struct pcmciamtd_dev *dev = link->priv;
 688
 689         DEBUG(3, "link=0x%p", link);
 690
 691         if(dev->mtd_info) {
 692                 del_mtd_device(dev->mtd_info);
 693                 dev_info(&dev->p_dev->dev, "mtd%d: Removing\n",
 694                          dev->mtd_info->index);
 695                 map_destroy(dev->mtd_info);
 696         }
 697
 698         pcmciamtd_release(link);
 699 }
 700
 701
 702 /* pcmciamtd_attach() creates an "instance" of the driver, allocating
 703  * local data structures for one device.  The device is registered
 704  * with Card Services.
 705  */
 706
 707 static int pcmciamtd_probe(struct pcmcia_device *link)
 708 {
 709         struct pcmciamtd_dev *dev;
 710
 711         /* Create new memory card device */
 712         dev = kzalloc(sizeof(*dev), GFP_KERNEL);
 713         if (!dev) return -ENOMEM;
 714         DEBUG(1, "dev=0x%p", dev);
 715
 716         dev->p_dev = link;
 717         link->priv = dev;
 718
 719         return pcmciamtd_config(link);
 720 }
 721
 722 static struct pcmcia_device_id pcmciamtd_ids[] = {
 723         PCMCIA_DEVICE_FUNC_ID(1),
 724         PCMCIA_DEVICE_PROD_ID123("IO DATA", "PCS-2M", "2MB SRAM", 0x547e66dc, 0x1fed36cd, 0x36eadd21),
 725         PCMCIA_DEVICE_PROD_ID12("IBM", "2MB SRAM", 0xb569a6e5, 0x36eadd21),
 726         PCMCIA_DEVICE_PROD_ID12("IBM", "4MB FLASH", 0xb569a6e5, 0x8bc54d2a),
 727         PCMCIA_DEVICE_PROD_ID12("IBM", "8MB FLASH", 0xb569a6e5, 0x6df1be3e),
 728         PCMCIA_DEVICE_PROD_ID12("Intel", "S2E20SW", 0x816cc815, 0xd14c9dcf),
 729         PCMCIA_DEVICE_PROD_ID12("Intel", "S2E8 SW", 0x816cc815, 0xa2d7dedb),
 730         PCMCIA_DEVICE_PROD_ID12("intel", "SERIES2-02 ", 0x40ade711, 0x145cea5c),
 731         PCMCIA_DEVICE_PROD_ID12("intel", "SERIES2-04 ", 0x40ade711, 0x42064dda),
 732         PCMCIA_DEVICE_PROD_ID12("intel", "SERIES2-20 ", 0x40ade711, 0x25ee5cb0),
 733         PCMCIA_DEVICE_PROD_ID12("intel", "VALUE SERIES 100 ", 0x40ade711, 0xdf8506d8),
 734         PCMCIA_DEVICE_PROD_ID12("KINGMAX TECHNOLOGY INC.", "SRAM 256K Bytes", 0x54d0c69c, 0xad12c29c),
 735         PCMCIA_DEVICE_PROD_ID12("Maxtor", "MAXFL MobileMax Flash Memory Card", 0xb68968c8, 0x2dfb47b0),
 736         PCMCIA_DEVICE_PROD_ID123("M-Systems", "M-SYS Flash Memory Card", "(c) M-Systems", 0x7ed2ad87, 0x675dc3fb, 0x7aef3965),
 737         PCMCIA_DEVICE_PROD_ID12("PRETEC", "  2MB SRAM CARD", 0xebf91155, 0x805360ca),
 738         PCMCIA_DEVICE_PROD_ID12("SEIKO EPSON", "WWB101EN20", 0xf9876baf, 0xad0b207b),
 739         PCMCIA_DEVICE_PROD_ID12("SEIKO EPSON", "WWB513EN20", 0xf9876baf, 0xe8d884ad),
 740         PCMCIA_DEVICE_PROD_ID12("SMART Modular Technologies", " 4MB FLASH Card", 0x96fd8277, 0x737a5b05),
 741         PCMCIA_DEVICE_PROD_ID12("Starfish, Inc.", "REX-3000", 0x05ddca47, 0xe7d67bca),
 742         PCMCIA_DEVICE_PROD_ID12("Starfish, Inc.", "REX-4100", 0x05ddca47, 0x7bc32944),
 743         /* the following was commented out in pcmcia-cs-3.2.7 */
 744         /* PCMCIA_DEVICE_PROD_ID12("RATOC Systems,Inc.", "SmartMedia ADAPTER PC Card", 0xf4a2fefe, 0x5885b2ae), */
 745 #ifdef CONFIG_MTD_PCMCIA_ANONYMOUS
 746         { .match_flags = PCMCIA_DEV_ID_MATCH_ANONYMOUS, },
 747 #endif
 748         PCMCIA_DEVICE_NULL
 749 };
 750 MODULE_DEVICE_TABLE(pcmcia, pcmciamtd_ids);
 751
 752 static struct pcmcia_driver pcmciamtd_driver = {
 753         .name           = "pcmciamtd",
 754         .probe          = pcmciamtd_probe,
 755         .remove         = pcmciamtd_detach,
 756         .owner          = THIS_MODULE,
 757         .id_table       = pcmciamtd_ids,
 758         .suspend        = pcmciamtd_suspend,
 759         .resume         = pcmciamtd_resume,
 760 };
 761
 762
 763 static int __init init_pcmciamtd(void)
 764 {
 765         info(DRIVER_DESC);
 766
 767         if(bankwidth && bankwidth != 1 && bankwidth != 2) {
 768                 info("bad bankwidth (%d), using default", bankwidth);
 769                 bankwidth = 2;
 770         }
 771         if(force_size && (force_size < 1 || force_size > 64)) {
 772                 info("bad force_size (%d), using default", force_size);
 773                 force_size = 0;
 774         }
 775         if(mem_type && mem_type != 1 && mem_type != 2) {
 776                 info("bad mem_type (%d), using default", mem_type);
 777                 mem_type = 0;
 778         }
 779         return pcmcia_register_driver(&pcmciamtd_driver);
 780 }
 781
 782
 783 static void __exit exit_pcmciamtd(void)
 784 {
 785         DEBUG(1, DRIVER_DESC " unloading");
 786         pcmcia_unregister_driver(&pcmciamtd_driver);
 787 }
 788
 789 module_init(init_pcmciamtd);
 790 module_exit(exit_pcmciamtd);