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         void __iomem    *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 void __iomem *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 NULL;
  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         void __iomem *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         void __iomem *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                 void __iomem *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         void __iomem *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         void __iomem *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                 void __iomem *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         void __iomem *win_base = (void __iomem *)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         void __iomem *win_base = (void __iomem *)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         void __iomem *win_base = (void __iomem *)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         void __iomem *win_base = (void __iomem *)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         void __iomem *win_base = (void __iomem *)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         void __iomem *win_base = (void __iomem *)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_MUTEX(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
 304         pr_debug("dev = %p on = %d vpp = %d\n\n", dev, on, dev->vpp);
 305         mutex_lock(&pcmcia_vpp_lock);
 306         if (on) {
 307                 if (++pcmcia_vpp_refcnt == 1)   /* first nested 'on' */
 308                         pcmcia_fixup_vpp(link, dev->vpp);
 309         } else {
 310                 if (--pcmcia_vpp_refcnt == 0)   /* last nested 'off' */
 311                         pcmcia_fixup_vpp(link, 0);
 312         }
 313         mutex_unlock(&pcmcia_vpp_lock);
 314 }
 315
 316
 317 static void pcmciamtd_release(struct pcmcia_device *link)
 318 {
 319         struct pcmciamtd_dev *dev = link->priv;
 320
 321         pr_debug("link = 0x%p\n", link);
 322
 323         if (link->resource[2]->end) {
 324                 if(dev->win_base) {
 325                         iounmap(dev->win_base);
 326                         dev->win_base = NULL;
 327                 }
 328         }
 329         pcmcia_disable_device(link);
 330 }
 331
 332
 333 static int pcmciamtd_cistpl_format(struct pcmcia_device *p_dev,
 334                                 tuple_t *tuple,
 335                                 void *priv_data)
 336 {
 337         cisparse_t parse;
 338
 339         if (!pcmcia_parse_tuple(tuple, &parse)) {
 340                 cistpl_format_t *t = &parse.format;
 341                 (void)t; /* Shut up, gcc */
 342                 pr_debug("Format type: %u, Error Detection: %u, offset = %u, length =%u\n",
 343                         t->type, t->edc, t->offset, t->length);
 344         }
 345         return -ENOSPC;
 346 }
 347
 348 static int pcmciamtd_cistpl_jedec(struct pcmcia_device *p_dev,
 349                                 tuple_t *tuple,
 350                                 void *priv_data)
 351 {
 352         cisparse_t parse;
 353         int i;
 354
 355         if (!pcmcia_parse_tuple(tuple, &parse)) {
 356                 cistpl_jedec_t *t = &parse.jedec;
 357                 for (i = 0; i < t->nid; i++)
 358                         pr_debug("JEDEC: 0x%02x 0x%02x\n",
 359                               t->id[i].mfr, t->id[i].info);
 360         }
 361         return -ENOSPC;
 362 }
 363
 364 static int pcmciamtd_cistpl_device(struct pcmcia_device *p_dev,
 365                                 tuple_t *tuple,
 366                                 void *priv_data)
 367 {
 368         struct pcmciamtd_dev *dev = priv_data;
 369         cisparse_t parse;
 370         cistpl_device_t *t = &parse.device;
 371         int i;
 372
 373         if (pcmcia_parse_tuple(tuple, &parse))
 374                 return -EINVAL;
 375
 376         pr_debug("Common memory:\n");
 377         dev->pcmcia_map.size = t->dev[0].size;
 378         /* from here on: DEBUG only */
 379         for (i = 0; i < t->ndev; i++) {
 380                 pr_debug("Region %d, type = %u\n", i, t->dev[i].type);
 381                 pr_debug("Region %d, wp = %u\n", i, t->dev[i].wp);
 382                 pr_debug("Region %d, speed = %u ns\n", i, t->dev[i].speed);
 383                 pr_debug("Region %d, size = %u bytes\n", i, t->dev[i].size);
 384         }
 385         return 0;
 386 }
 387
 388 static int pcmciamtd_cistpl_geo(struct pcmcia_device *p_dev,
 389                                 tuple_t *tuple,
 390                                 void *priv_data)
 391 {
 392         struct pcmciamtd_dev *dev = priv_data;
 393         cisparse_t parse;
 394         cistpl_device_geo_t *t = &parse.device_geo;
 395         int i;
 396
 397         if (pcmcia_parse_tuple(tuple, &parse))
 398                 return -EINVAL;
 399
 400         dev->pcmcia_map.bankwidth = t->geo[0].buswidth;
 401         /* from here on: DEBUG only */
 402         for (i = 0; i < t->ngeo; i++) {
 403                 pr_debug("region: %d bankwidth = %u\n", i, t->geo[i].buswidth);
 404                 pr_debug("region: %d erase_block = %u\n", i, t->geo[i].erase_block);
 405                 pr_debug("region: %d read_block = %u\n", i, t->geo[i].read_block);
 406                 pr_debug("region: %d write_block = %u\n", i, t->geo[i].write_block);
 407                 pr_debug("region: %d partition = %u\n", i, t->geo[i].partition);
 408                 pr_debug("region: %d interleave = %u\n", i, t->geo[i].interleave);
 409         }
 410         return 0;
 411 }
 412
 413
 414 static void card_settings(struct pcmciamtd_dev *dev, struct pcmcia_device *p_dev, int *new_name)
 415 {
 416         int i;
 417
 418         if (p_dev->prod_id[0]) {
 419                 dev->mtd_name[0] = '\0';
 420                 for (i = 0; i < 4; i++) {
 421                         if (i)
 422                                 strcat(dev->mtd_name, " ");
 423                         if (p_dev->prod_id[i])
 424                                 strcat(dev->mtd_name, p_dev->prod_id[i]);
 425                 }
 426                 pr_debug("Found name: %s\n", dev->mtd_name);
 427         }
 428
 429         pcmcia_loop_tuple(p_dev, CISTPL_FORMAT, pcmciamtd_cistpl_format, NULL);
 430         pcmcia_loop_tuple(p_dev, CISTPL_JEDEC_C, pcmciamtd_cistpl_jedec, NULL);
 431         pcmcia_loop_tuple(p_dev, CISTPL_DEVICE, pcmciamtd_cistpl_device, dev);
 432         pcmcia_loop_tuple(p_dev, CISTPL_DEVICE_GEO, pcmciamtd_cistpl_geo, dev);
 433
 434         if(!dev->pcmcia_map.size)
 435                 dev->pcmcia_map.size = MAX_PCMCIA_ADDR;
 436
 437         if(!dev->pcmcia_map.bankwidth)
 438                 dev->pcmcia_map.bankwidth = 2;
 439
 440         if(force_size) {
 441                 dev->pcmcia_map.size = force_size << 20;
 442                 pr_debug("size forced to %dM\n", force_size);
 443         }
 444
 445         if(bankwidth) {
 446                 dev->pcmcia_map.bankwidth = bankwidth;
 447                 pr_debug("bankwidth forced to %d\n", bankwidth);
 448         }
 449
 450         dev->pcmcia_map.name = dev->mtd_name;
 451         if(!dev->mtd_name[0]) {
 452                 strcpy(dev->mtd_name, "PCMCIA Memory card");
 453                 *new_name = 1;
 454         }
 455
 456         pr_debug("Device: Size: %lu Width:%d Name: %s\n",
 457               dev->pcmcia_map.size,
 458               dev->pcmcia_map.bankwidth << 3, dev->mtd_name);
 459 }
 460
 461
 462 static int pcmciamtd_config(struct pcmcia_device *link)
 463 {
 464         struct pcmciamtd_dev *dev = link->priv;
 465         struct mtd_info *mtd = NULL;
 466         int ret;
 467         int i, j = 0;
 468         static char *probes[] = { "jedec_probe", "cfi_probe" };
 469         int new_name = 0;
 470
 471         pr_debug("link=0x%p\n", link);
 472
 473         card_settings(dev, link, &new_name);
 474
 475         dev->pcmcia_map.phys = NO_XIP;
 476         dev->pcmcia_map.copy_from = pcmcia_copy_from_remap;
 477         dev->pcmcia_map.copy_to = pcmcia_copy_to_remap;
 478         if (dev->pcmcia_map.bankwidth == 1) {
 479                 dev->pcmcia_map.read = pcmcia_read8_remap;
 480                 dev->pcmcia_map.write = pcmcia_write8_remap;
 481         } else {
 482                 dev->pcmcia_map.read = pcmcia_read16_remap;
 483                 dev->pcmcia_map.write = pcmcia_write16_remap;
 484         }
 485         if(setvpp == 1)
 486                 dev->pcmcia_map.set_vpp = pcmciamtd_set_vpp;
 487
 488         /* Request a memory window for PCMCIA. Some architeures can map windows
 489          * up to the maximum that PCMCIA can support (64MiB) - this is ideal and
 490          * we aim for a window the size of the whole card - otherwise we try
 491          * smaller windows until we succeed
 492          */
 493
 494         link->resource[2]->flags |=  WIN_MEMORY_TYPE_CM | WIN_ENABLE;
 495         link->resource[2]->flags |= (dev->pcmcia_map.bankwidth == 1) ?
 496                                         WIN_DATA_WIDTH_8 : WIN_DATA_WIDTH_16;
 497         link->resource[2]->start = 0;
 498         link->resource[2]->end = (force_size) ? force_size << 20 :
 499                                         MAX_PCMCIA_ADDR;
 500         dev->win_size = 0;
 501
 502         do {
 503                 int ret;
 504                 pr_debug("requesting window with size = %luKiB memspeed = %d\n",
 505                         (unsigned long) resource_size(link->resource[2]) >> 10,
 506                         mem_speed);
 507                 ret = pcmcia_request_window(link, link->resource[2], mem_speed);
 508                 pr_debug("ret = %d dev->win_size = %d\n", ret, dev->win_size);
 509                 if(ret) {
 510                         j++;
 511                         link->resource[2]->start = 0;
 512                         link->resource[2]->end = (force_size) ?
 513                                         force_size << 20 : MAX_PCMCIA_ADDR;
 514                         link->resource[2]->end >>= j;
 515                 } else {
 516                         pr_debug("Got window of size %luKiB\n", (unsigned long)
 517                                 resource_size(link->resource[2]) >> 10);
 518                         dev->win_size = resource_size(link->resource[2]);
 519                         break;
 520                 }
 521         } while (link->resource[2]->end >= 0x1000);
 522
 523         pr_debug("dev->win_size = %d\n", dev->win_size);
 524
 525         if(!dev->win_size) {
 526                 dev_err(&dev->p_dev->dev, "Cannot allocate memory window\n");
 527                 pcmciamtd_release(link);
 528                 return -ENODEV;
 529         }
 530         pr_debug("Allocated a window of %dKiB\n", dev->win_size >> 10);
 531
 532         /* Get write protect status */
 533         dev->win_base = ioremap(link->resource[2]->start,
 534                                 resource_size(link->resource[2]));
 535         if(!dev->win_base) {
 536                 dev_err(&dev->p_dev->dev, "ioremap(%pR) failed\n",
 537                         link->resource[2]);
 538                 pcmciamtd_release(link);
 539                 return -ENODEV;
 540         }
 541         pr_debug("mapped window dev = %p @ %pR, base = %p\n",
 542               dev, link->resource[2], dev->win_base);
 543
 544         dev->offset = 0;
 545         dev->pcmcia_map.map_priv_1 = (unsigned long)dev;
 546         dev->pcmcia_map.map_priv_2 = (unsigned long)link->resource[2];
 547
 548         dev->vpp = (vpp) ? vpp : link->socket->socket.Vpp;
 549         if(setvpp == 2) {
 550                 link->vpp = dev->vpp;
 551         } else {
 552                 link->vpp = 0;
 553         }
 554
 555         link->config_index = 0;
 556         pr_debug("Setting Configuration\n");
 557         ret = pcmcia_enable_device(link);
 558         if (ret != 0) {
 559                 if (dev->win_base) {
 560                         iounmap(dev->win_base);
 561                         dev->win_base = NULL;
 562                 }
 563                 return -ENODEV;
 564         }
 565
 566         if(mem_type == 1) {
 567                 mtd = do_map_probe("map_ram", &dev->pcmcia_map);
 568         } else if(mem_type == 2) {
 569                 mtd = do_map_probe("map_rom", &dev->pcmcia_map);
 570         } else {
 571                 for(i = 0; i < ARRAY_SIZE(probes); i++) {
 572                         pr_debug("Trying %s\n", probes[i]);
 573                         mtd = do_map_probe(probes[i], &dev->pcmcia_map);
 574                         if(mtd)
 575                                 break;
 576
 577                         pr_debug("FAILED: %s\n", probes[i]);
 578                 }
 579         }
 580
 581         if(!mtd) {
 582                 pr_debug("Can not find an MTD\n");
 583                 pcmciamtd_release(link);
 584                 return -ENODEV;
 585         }
 586
 587         dev->mtd_info = mtd;
 588         mtd->owner = THIS_MODULE;
 589
 590         if(new_name) {
 591                 int size = 0;
 592                 char unit = ' ';
 593                 /* Since we are using a default name, make it better by adding
 594                  * in the size
 595                  */
 596                 if(mtd->size < 1048576) { /* <1MiB in size, show size in KiB */
 597                         size = mtd->size >> 10;
 598                         unit = 'K';
 599                 } else {
 600                         size = mtd->size >> 20;
 601                         unit = 'M';
 602                 }
 603                 snprintf(dev->mtd_name, sizeof(dev->mtd_name), "%d%ciB %s", size, unit, "PCMCIA Memory card");
 604         }
 605
 606         /* If the memory found is fits completely into the mapped PCMCIA window,
 607            use the faster non-remapping read/write functions */
 608         if(mtd->size <= dev->win_size) {
 609                 pr_debug("Using non remapping memory functions\n");
 610                 dev->pcmcia_map.map_priv_2 = (unsigned long)dev->win_base;
 611                 if (dev->pcmcia_map.bankwidth == 1) {
 612                         dev->pcmcia_map.read = pcmcia_read8;
 613                         dev->pcmcia_map.write = pcmcia_write8;
 614                 } else {
 615                         dev->pcmcia_map.read = pcmcia_read16;
 616                         dev->pcmcia_map.write = pcmcia_write16;
 617                 }
 618                 dev->pcmcia_map.copy_from = pcmcia_copy_from;
 619                 dev->pcmcia_map.copy_to = pcmcia_copy_to;
 620         }
 621
 622         if (mtd_device_register(mtd, NULL, 0)) {
 623                 map_destroy(mtd);
 624                 dev->mtd_info = NULL;
 625                 dev_err(&dev->p_dev->dev,
 626                         "Could not register the MTD device\n");
 627                 pcmciamtd_release(link);
 628                 return -ENODEV;
 629         }
 630         dev_info(&dev->p_dev->dev, "mtd%d: %s\n", mtd->index, mtd->name);
 631         return 0;
 632 }
 633
 634
 635 static int pcmciamtd_suspend(struct pcmcia_device *dev)
 636 {
 637         pr_debug("EVENT_PM_RESUME\n");
 638
 639         /* get_lock(link); */
 640
 641         return 0;
 642 }
 643
 644 static int pcmciamtd_resume(struct pcmcia_device *dev)
 645 {
 646         pr_debug("EVENT_PM_SUSPEND\n");
 647
 648         /* free_lock(link); */
 649
 650         return 0;
 651 }
 652
 653
 654 static void pcmciamtd_detach(struct pcmcia_device *link)
 655 {
 656         struct pcmciamtd_dev *dev = link->priv;
 657
 658         pr_debug("link=0x%p\n", link);
 659
 660         if(dev->mtd_info) {
 661                 mtd_device_unregister(dev->mtd_info);
 662                 dev_info(&dev->p_dev->dev, "mtd%d: Removing\n",
 663                          dev->mtd_info->index);
 664                 map_destroy(dev->mtd_info);
 665         }
 666
 667         pcmciamtd_release(link);
 668 }
 669
 670
 671 static int pcmciamtd_probe(struct pcmcia_device *link)
 672 {
 673         struct pcmciamtd_dev *dev;
 674
 675         /* Create new memory card device */
 676         dev = kzalloc(sizeof(*dev), GFP_KERNEL);
 677         if (!dev) return -ENOMEM;
 678         pr_debug("dev=0x%p\n", dev);
 679
 680         dev->p_dev = link;
 681         link->priv = dev;
 682
 683         return pcmciamtd_config(link);
 684 }
 685
 686 static const struct pcmcia_device_id pcmciamtd_ids[] = {
 687         PCMCIA_DEVICE_FUNC_ID(1),
 688         PCMCIA_DEVICE_PROD_ID123("IO DATA", "PCS-2M", "2MB SRAM", 0x547e66dc, 0x1fed36cd, 0x36eadd21),
 689         PCMCIA_DEVICE_PROD_ID12("IBM", "2MB SRAM", 0xb569a6e5, 0x36eadd21),
 690         PCMCIA_DEVICE_PROD_ID12("IBM", "4MB FLASH", 0xb569a6e5, 0x8bc54d2a),
 691         PCMCIA_DEVICE_PROD_ID12("IBM", "8MB FLASH", 0xb569a6e5, 0x6df1be3e),
 692         PCMCIA_DEVICE_PROD_ID12("Intel", "S2E20SW", 0x816cc815, 0xd14c9dcf),
 693         PCMCIA_DEVICE_PROD_ID12("Intel", "S2E8 SW", 0x816cc815, 0xa2d7dedb),
 694         PCMCIA_DEVICE_PROD_ID12("intel", "SERIES2-02 ", 0x40ade711, 0x145cea5c),
 695         PCMCIA_DEVICE_PROD_ID12("intel", "SERIES2-04 ", 0x40ade711, 0x42064dda),
 696         PCMCIA_DEVICE_PROD_ID12("intel", "SERIES2-20 ", 0x40ade711, 0x25ee5cb0),
 697         PCMCIA_DEVICE_PROD_ID12("intel", "VALUE SERIES 100 ", 0x40ade711, 0xdf8506d8),
 698         PCMCIA_DEVICE_PROD_ID12("KINGMAX TECHNOLOGY INC.", "SRAM 256K Bytes", 0x54d0c69c, 0xad12c29c),
 699         PCMCIA_DEVICE_PROD_ID12("Maxtor", "MAXFL MobileMax Flash Memory Card", 0xb68968c8, 0x2dfb47b0),
 700         PCMCIA_DEVICE_PROD_ID123("M-Systems", "M-SYS Flash Memory Card", "(c) M-Systems", 0x7ed2ad87, 0x675dc3fb, 0x7aef3965),
 701         PCMCIA_DEVICE_PROD_ID12("PRETEC", "  2MB SRAM CARD", 0xebf91155, 0x805360ca),
 702         PCMCIA_DEVICE_PROD_ID12("PRETEC", "  4MB SRAM CARD", 0xebf91155, 0x20b6bf17),
 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);