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