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/cs.h>
  20 #include <pcmcia/cistpl.h>
  21 #include <pcmcia/ds.h>
  22
  23 #include <linux/mtd/map.h>
  24 #include <linux/mtd/mtd.h>
  25
  26 #ifdef CONFIG_MTD_DEBUG
  27 static int debug = CONFIG_MTD_DEBUG_VERBOSE;
  28 module_param(debug, int, 0);
  29 MODULE_PARM_DESC(debug, "Set Debug Level 0=quiet, 5=noisy");
  30 #undef DEBUG
  31 #define DEBUG(n, format, arg...) \
  32         if (n <= debug) {        \
  33                 printk(KERN_DEBUG __FILE__ ":%s(): " format "\n", __func__ , ## arg); \
  34         }
  35
  36 #else
  37 #undef DEBUG
  38 #define DEBUG(n, arg...)
  39 static const int debug = 0;
  40 #endif
  41
  42 #define info(format, arg...) printk(KERN_INFO "pcmciamtd: " format "\n" , ## arg)
  43
  44 #define DRIVER_DESC     "PCMCIA Flash memory card driver"
  45
  46 /* Size of the PCMCIA address space: 26 bits = 64 MB */
  47 #define MAX_PCMCIA_ADDR 0x4000000
  48
  49 struct pcmciamtd_dev {
  50         struct pcmcia_device    *p_dev;
  51         caddr_t         win_base;       /* ioremapped address of PCMCIA window */
  52         unsigned int    win_size;       /* size of window */
  53         unsigned int    offset;         /* offset into card the window currently points at */
  54         struct map_info pcmcia_map;
  55         struct mtd_info *mtd_info;
  56         int             vpp;
  57         char            mtd_name[sizeof(struct cistpl_vers_1_t)];
  58 };
  59
  60
  61 /* Module parameters */
  62
  63 /* 2 = do 16-bit transfers, 1 = do 8-bit transfers */
  64 static int bankwidth = 2;
  65
  66 /* Speed of memory accesses, in ns */
  67 static int mem_speed;
  68
  69 /* Force the size of an SRAM card */
  70 static int force_size;
  71
  72 /* Force Vpp */
  73 static int vpp;
  74
  75 /* Set Vpp */
  76 static int setvpp;
  77
  78 /* Force card to be treated as FLASH, ROM or RAM */
  79 static int mem_type;
  80
  81 MODULE_LICENSE("GPL");
  82 MODULE_AUTHOR("Simon Evans <spse@secret.org.uk>");
  83 MODULE_DESCRIPTION(DRIVER_DESC);
  84 module_param(bankwidth, int, 0);
  85 MODULE_PARM_DESC(bankwidth, "Set bankwidth (1=8 bit, 2=16 bit, default=2)");
  86 module_param(mem_speed, int, 0);
  87 MODULE_PARM_DESC(mem_speed, "Set memory access speed in ns");
  88 module_param(force_size, int, 0);
  89 MODULE_PARM_DESC(force_size, "Force size of card in MiB (1-64)");
  90 module_param(setvpp, int, 0);
  91 MODULE_PARM_DESC(setvpp, "Set Vpp (0=Never, 1=On writes, 2=Always on, default=0)");
  92 module_param(vpp, int, 0);
  93 MODULE_PARM_DESC(vpp, "Vpp value in 1/10ths eg 33=3.3V 120=12V (Dangerous)");
  94 module_param(mem_type, int, 0);
  95 MODULE_PARM_DESC(mem_type, "Set Memory type (0=Flash, 1=RAM, 2=ROM, default=0)");
  96
  97
  98 /* read/write{8,16} copy_{from,to} routines with window remapping
  99  * to access whole card
 100  */
 101 static caddr_t remap_window(struct map_info *map, unsigned long to)
 102 {
 103         struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1;
 104         struct resource *win = (struct resource *) map->map_priv_2;
 105         unsigned int offset;
 106         int ret;
 107
 108         if (!pcmcia_dev_present(dev->p_dev)) {
 109                 DEBUG(1, "device removed");
 110                 return 0;
 111         }
 112
 113         offset = to & ~(dev->win_size-1);
 114         if (offset != dev->offset) {
 115                 DEBUG(2, "Remapping window from 0x%8.8x to 0x%8.8x",
 116                       dev->offset, offset);
 117                 ret = pcmcia_map_mem_page(dev->p_dev, win, offset);
 118                 if (ret != 0)
 119                         return NULL;
 120                 dev->offset = offset;
 121         }
 122         return dev->win_base + (to & (dev->win_size-1));
 123 }
 124
 125
 126 static map_word pcmcia_read8_remap(struct map_info *map, unsigned long ofs)
 127 {
 128         caddr_t addr;
 129         map_word d = {{0}};
 130
 131         addr = remap_window(map, ofs);
 132         if(!addr)
 133                 return d;
 134
 135         d.x[0] = readb(addr);
 136         DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%02lx", ofs, addr, d.x[0]);
 137         return d;
 138 }
 139
 140
 141 static map_word pcmcia_read16_remap(struct map_info *map, unsigned long ofs)
 142 {
 143         caddr_t addr;
 144         map_word d = {{0}};
 145
 146         addr = remap_window(map, ofs);
 147         if(!addr)
 148                 return d;
 149
 150         d.x[0] = readw(addr);
 151         DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%04lx", ofs, addr, d.x[0]);
 152         return d;
 153 }
 154
 155
 156 static void pcmcia_copy_from_remap(struct map_info *map, void *to, unsigned long from, ssize_t len)
 157 {
 158         struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1;
 159         unsigned long win_size = dev->win_size;
 160
 161         DEBUG(3, "to = %p from = %lu len = %zd", to, from, len);
 162         while(len) {
 163                 int toread = win_size - (from & (win_size-1));
 164                 caddr_t addr;
 165
 166                 if(toread > len)
 167                         toread = len;
 168
 169                 addr = remap_window(map, from);
 170                 if(!addr)
 171                         return;
 172
 173                 DEBUG(4, "memcpy from %p to %p len = %d", addr, to, toread);
 174                 memcpy_fromio(to, addr, toread);
 175                 len -= toread;
 176                 to += toread;
 177                 from += toread;
 178         }
 179 }
 180
 181
 182 static void pcmcia_write8_remap(struct map_info *map, map_word d, unsigned long adr)
 183 {
 184         caddr_t addr = remap_window(map, adr);
 185
 186         if(!addr)
 187                 return;
 188
 189         DEBUG(3, "adr = 0x%08lx (%p)  data = 0x%02lx", adr, addr, d.x[0]);
 190         writeb(d.x[0], addr);
 191 }
 192
 193
 194 static void pcmcia_write16_remap(struct map_info *map, map_word d, unsigned long adr)
 195 {
 196         caddr_t addr = remap_window(map, adr);
 197         if(!addr)
 198                 return;
 199
 200         DEBUG(3, "adr = 0x%08lx (%p)  data = 0x%04lx", adr, addr, d.x[0]);
 201         writew(d.x[0], addr);
 202 }
 203
 204
 205 static void pcmcia_copy_to_remap(struct map_info *map, unsigned long to, const void *from, ssize_t len)
 206 {
 207         struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1;
 208         unsigned long win_size = dev->win_size;
 209
 210         DEBUG(3, "to = %lu from = %p len = %zd", to, from, len);
 211         while(len) {
 212                 int towrite = win_size - (to & (win_size-1));
 213                 caddr_t addr;
 214
 215                 if(towrite > len)
 216                         towrite = len;
 217
 218                 addr = remap_window(map, to);
 219                 if(!addr)
 220                         return;
 221
 222                 DEBUG(4, "memcpy from %p to %p len = %d", from, addr, towrite);
 223                 memcpy_toio(addr, from, towrite);
 224                 len -= towrite;
 225                 to += towrite;
 226                 from += towrite;
 227         }
 228 }
 229
 230
 231 /* read/write{8,16} copy_{from,to} routines with direct access */
 232
 233 #define DEV_REMOVED(x)  (!(pcmcia_dev_present(((struct pcmciamtd_dev *)map->map_priv_1)->p_dev)))
 234
 235 static map_word pcmcia_read8(struct map_info *map, unsigned long ofs)
 236 {
 237         caddr_t win_base = (caddr_t)map->map_priv_2;
 238         map_word d = {{0}};
 239
 240         if(DEV_REMOVED(map))
 241                 return d;
 242
 243         d.x[0] = readb(win_base + ofs);
 244         DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%02lx",
 245               ofs, win_base + ofs, d.x[0]);
 246         return d;
 247 }
 248
 249
 250 static map_word pcmcia_read16(struct map_info *map, unsigned long ofs)
 251 {
 252         caddr_t win_base = (caddr_t)map->map_priv_2;
 253         map_word d = {{0}};
 254
 255         if(DEV_REMOVED(map))
 256                 return d;
 257
 258         d.x[0] = readw(win_base + ofs);
 259         DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%04lx",
 260               ofs, win_base + ofs, d.x[0]);
 261         return d;
 262 }
 263
 264
 265 static void pcmcia_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len)
 266 {
 267         caddr_t win_base = (caddr_t)map->map_priv_2;
 268
 269         if(DEV_REMOVED(map))
 270                 return;
 271
 272         DEBUG(3, "to = %p from = %lu len = %zd", to, from, len);
 273         memcpy_fromio(to, win_base + from, len);
 274 }
 275
 276
 277 static void pcmcia_write8(struct map_info *map, map_word d, unsigned long adr)
 278 {
 279         caddr_t win_base = (caddr_t)map->map_priv_2;
 280
 281         if(DEV_REMOVED(map))
 282                 return;
 283
 284         DEBUG(3, "adr = 0x%08lx (%p)  data = 0x%02lx",
 285               adr, win_base + adr, d.x[0]);
 286         writeb(d.x[0], win_base + adr);
 287 }
 288
 289
 290 static void pcmcia_write16(struct map_info *map, map_word d, unsigned long adr)
 291 {
 292         caddr_t win_base = (caddr_t)map->map_priv_2;
 293
 294         if(DEV_REMOVED(map))
 295                 return;
 296
 297         DEBUG(3, "adr = 0x%08lx (%p)  data = 0x%04lx",
 298               adr, win_base + adr, d.x[0]);
 299         writew(d.x[0], win_base + adr);
 300 }
 301
 302
 303 static void pcmcia_copy_to(struct map_info *map, unsigned long to, const void *from, ssize_t len)
 304 {
 305         caddr_t win_base = (caddr_t)map->map_priv_2;
 306
 307         if(DEV_REMOVED(map))
 308                 return;
 309
 310         DEBUG(3, "to = %lu from = %p len = %zd", to, from, len);
 311         memcpy_toio(win_base + to, from, len);
 312 }
 313
 314
 315 static void pcmciamtd_set_vpp(struct map_info *map, int on)
 316 {
 317         struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1;
 318         struct pcmcia_device *link = dev->p_dev;
 319         modconf_t mod;
 320         int ret;
 321
 322         mod.Attributes = CONF_VPP1_CHANGE_VALID | CONF_VPP2_CHANGE_VALID;
 323         mod.Vcc = 0;
 324         mod.Vpp1 = mod.Vpp2 = on ? dev->vpp : 0;
 325
 326         DEBUG(2, "dev = %p on = %d vpp = %d\n", dev, on, dev->vpp);
 327         ret = pcmcia_modify_configuration(link, &mod);
 328 }
 329
 330
 331 /* After a card is removed, pcmciamtd_release() will unregister the
 332  * device, and release the PCMCIA configuration.  If the device is
 333  * still open, this will be postponed until it is closed.
 334  */
 335
 336 static void pcmciamtd_release(struct pcmcia_device *link)
 337 {
 338         struct pcmciamtd_dev *dev = link->priv;
 339
 340         DEBUG(3, "link = 0x%p", link);
 341
 342         if (link->resource[2]->end) {
 343                 if(dev->win_base) {
 344                         iounmap(dev->win_base);
 345                         dev->win_base = NULL;
 346                 }
 347         }
 348         pcmcia_disable_device(link);
 349 }
 350
 351
 352 #ifdef CONFIG_MTD_DEBUG
 353 static int pcmciamtd_cistpl_format(struct pcmcia_device *p_dev,
 354                                 tuple_t *tuple,
 355                                 void *priv_data)
 356 {
 357         cisparse_t parse;
 358
 359         if (!pcmcia_parse_tuple(tuple, &parse)) {
 360                 cistpl_format_t *t = &parse.format;
 361                 (void)t; /* Shut up, gcc */
 362                 DEBUG(2, "Format type: %u, Error Detection: %u, offset = %u, length =%u",
 363                         t->type, t->edc, t->offset, t->length);
 364         }
 365         return -ENOSPC;
 366 }
 367
 368 static int pcmciamtd_cistpl_jedec(struct pcmcia_device *p_dev,
 369                                 tuple_t *tuple,
 370                                 void *priv_data)
 371 {
 372         cisparse_t parse;
 373         int i;
 374
 375         if (!pcmcia_parse_tuple(tuple, &parse)) {
 376                 cistpl_jedec_t *t = &parse.jedec;
 377                 for (i = 0; i < t->nid; i++)
 378                         DEBUG(2, "JEDEC: 0x%02x 0x%02x",
 379                               t->id[i].mfr, t->id[i].info);
 380         }
 381         return -ENOSPC;
 382 }
 383 #endif
 384
 385 static int pcmciamtd_cistpl_device(struct pcmcia_device *p_dev,
 386                                 tuple_t *tuple,
 387                                 void *priv_data)
 388 {
 389         struct pcmciamtd_dev *dev = priv_data;
 390         cisparse_t parse;
 391         cistpl_device_t *t = &parse.device;
 392         int i;
 393
 394         if (pcmcia_parse_tuple(tuple, &parse))
 395                 return -EINVAL;
 396
 397         DEBUG(2, "Common memory:");
 398         dev->pcmcia_map.size = t->dev[0].size;
 399         /* from here on: DEBUG only */
 400         for (i = 0; i < t->ndev; i++) {
 401                 DEBUG(2, "Region %d, type = %u", i, t->dev[i].type);
 402                 DEBUG(2, "Region %d, wp = %u", i, t->dev[i].wp);
 403                 DEBUG(2, "Region %d, speed = %u ns", i, t->dev[i].speed);
 404                 DEBUG(2, "Region %d, size = %u bytes", i, t->dev[i].size);
 405         }
 406         return 0;
 407 }
 408
 409 static int pcmciamtd_cistpl_geo(struct pcmcia_device *p_dev,
 410                                 tuple_t *tuple,
 411                                 void *priv_data)
 412 {
 413         struct pcmciamtd_dev *dev = priv_data;
 414         cisparse_t parse;
 415         cistpl_device_geo_t *t = &parse.device_geo;
 416         int i;
 417
 418         if (pcmcia_parse_tuple(tuple, &parse))
 419                 return -EINVAL;
 420
 421         dev->pcmcia_map.bankwidth = t->geo[0].buswidth;
 422         /* from here on: DEBUG only */
 423         for (i = 0; i < t->ngeo; i++) {
 424                 DEBUG(2, "region: %d bankwidth = %u", i, t->geo[i].buswidth);
 425                 DEBUG(2, "region: %d erase_block = %u", i, t->geo[i].erase_block);
 426                 DEBUG(2, "region: %d read_block = %u", i, t->geo[i].read_block);
 427                 DEBUG(2, "region: %d write_block = %u", i, t->geo[i].write_block);
 428                 DEBUG(2, "region: %d partition = %u", i, t->geo[i].partition);
 429                 DEBUG(2, "region: %d interleave = %u", i, t->geo[i].interleave);
 430         }
 431         return 0;
 432 }
 433
 434
 435 static void card_settings(struct pcmciamtd_dev *dev, struct pcmcia_device *p_dev, int *new_name)
 436 {
 437         int i;
 438
 439         if (p_dev->prod_id[0]) {
 440                 dev->mtd_name[0] = '\0';
 441                 for (i = 0; i < 4; i++) {
 442                         if (i)
 443                                 strcat(dev->mtd_name, " ");
 444                         if (p_dev->prod_id[i])
 445                                 strcat(dev->mtd_name, p_dev->prod_id[i]);
 446                 }
 447                 DEBUG(2, "Found name: %s", dev->mtd_name);
 448         }
 449
 450 #ifdef CONFIG_MTD_DEBUG
 451         pcmcia_loop_tuple(p_dev, CISTPL_FORMAT, pcmciamtd_cistpl_format, NULL);
 452         pcmcia_loop_tuple(p_dev, CISTPL_JEDEC_C, pcmciamtd_cistpl_jedec, NULL);
 453 #endif
 454         pcmcia_loop_tuple(p_dev, CISTPL_DEVICE, pcmciamtd_cistpl_device, dev);
 455         pcmcia_loop_tuple(p_dev, CISTPL_DEVICE_GEO, pcmciamtd_cistpl_geo, dev);
 456
 457         if(!dev->pcmcia_map.size)
 458                 dev->pcmcia_map.size = MAX_PCMCIA_ADDR;
 459
 460         if(!dev->pcmcia_map.bankwidth)
 461                 dev->pcmcia_map.bankwidth = 2;
 462
 463         if(force_size) {
 464                 dev->pcmcia_map.size = force_size << 20;
 465                 DEBUG(2, "size forced to %dM", force_size);
 466         }
 467
 468         if(bankwidth) {
 469                 dev->pcmcia_map.bankwidth = bankwidth;
 470                 DEBUG(2, "bankwidth forced to %d", bankwidth);
 471         }
 472
 473         dev->pcmcia_map.name = dev->mtd_name;
 474         if(!dev->mtd_name[0]) {
 475                 strcpy(dev->mtd_name, "PCMCIA Memory card");
 476                 *new_name = 1;
 477         }
 478
 479         DEBUG(1, "Device: Size: %lu Width:%d Name: %s",
 480               dev->pcmcia_map.size,
 481               dev->pcmcia_map.bankwidth << 3, dev->mtd_name);
 482 }
 483
 484
 485 /* pcmciamtd_config() is scheduled to run after a CARD_INSERTION event
 486  * is received, to configure the PCMCIA socket, and to make the
 487  * MTD device available to the system.
 488  */
 489
 490 static int pcmciamtd_config(struct pcmcia_device *link)
 491 {
 492         struct pcmciamtd_dev *dev = link->priv;
 493         struct mtd_info *mtd = NULL;
 494         int ret;
 495         int i, j = 0;
 496         static char *probes[] = { "jedec_probe", "cfi_probe" };
 497         int new_name = 0;
 498
 499         DEBUG(3, "link=0x%p", link);
 500
 501         card_settings(dev, link, &new_name);
 502
 503         dev->pcmcia_map.phys = NO_XIP;
 504         dev->pcmcia_map.copy_from = pcmcia_copy_from_remap;
 505         dev->pcmcia_map.copy_to = pcmcia_copy_to_remap;
 506         if (dev->pcmcia_map.bankwidth == 1) {
 507                 dev->pcmcia_map.read = pcmcia_read8_remap;
 508                 dev->pcmcia_map.write = pcmcia_write8_remap;
 509         } else {
 510                 dev->pcmcia_map.read = pcmcia_read16_remap;
 511                 dev->pcmcia_map.write = pcmcia_write16_remap;
 512         }
 513         if(setvpp == 1)
 514                 dev->pcmcia_map.set_vpp = pcmciamtd_set_vpp;
 515
 516         /* Request a memory window for PCMCIA. Some architeures can map windows
 517          * upto the maximum that PCMCIA can support (64MiB) - this is ideal and
 518          * we aim for a window the size of the whole card - otherwise we try
 519          * smaller windows until we succeed
 520          */
 521
 522         link->resource[2]->flags |=  WIN_MEMORY_TYPE_CM | WIN_ENABLE;
 523         link->resource[2]->flags |= (dev->pcmcia_map.bankwidth == 1) ?
 524                                         WIN_DATA_WIDTH_8 : WIN_DATA_WIDTH_16;
 525         link->resource[2]->start = 0;
 526         link->resource[2]->end = (force_size) ? force_size << 20 :
 527                                         MAX_PCMCIA_ADDR;
 528         dev->win_size = 0;
 529
 530         do {
 531                 int ret;
 532                 DEBUG(2, "requesting window with size = %luKiB memspeed = %d",
 533                         (unsigned long) resource_size(link->resource[2]) >> 10,
 534                         mem_speed);
 535                 ret = pcmcia_request_window(link, link->resource[2], mem_speed);
 536                 DEBUG(2, "ret = %d dev->win_size = %d", ret, dev->win_size);
 537                 if(ret) {
 538                         j++;
 539                         link->resource[2]->start = 0;
 540                         link->resource[2]->end = (force_size) ?
 541                                         force_size << 20 : MAX_PCMCIA_ADDR;
 542                         link->resource[2]->end >>= j;
 543                 } else {
 544                         DEBUG(2, "Got window of size %luKiB", (unsigned long)
 545                                 resource_size(link->resource[2]) >> 10);
 546                         dev->win_size = resource_size(link->resource[2]);
 547                         break;
 548                 }
 549         } while (link->resource[2]->end >= 0x1000);
 550
 551         DEBUG(2, "dev->win_size = %d", dev->win_size);
 552
 553         if(!dev->win_size) {
 554                 dev_err(&dev->p_dev->dev, "Cannot allocate memory window\n");
 555                 pcmciamtd_release(link);
 556                 return -ENODEV;
 557         }
 558         DEBUG(1, "Allocated a window of %dKiB", dev->win_size >> 10);
 559
 560         /* Get write protect status */
 561         dev->win_base = ioremap(link->resource[2]->start,
 562                                 resource_size(link->resource[2]));
 563         if(!dev->win_base) {
 564                 dev_err(&dev->p_dev->dev, "ioremap(%pR) failed\n",
 565                         link->resource[2]);
 566                 pcmciamtd_release(link);
 567                 return -ENODEV;
 568         }
 569         DEBUG(1, "mapped window dev = %p @ %pR, base = %p",
 570               dev, link->resource[2], dev->win_base);
 571
 572         dev->offset = 0;
 573         dev->pcmcia_map.map_priv_1 = (unsigned long)dev;
 574         dev->pcmcia_map.map_priv_2 = (unsigned long)link->resource[2];
 575
 576         dev->vpp = (vpp) ? vpp : link->socket->socket.Vpp;
 577         link->conf.Attributes = 0;
 578         if(setvpp == 2) {
 579                 link->conf.Vpp = dev->vpp;
 580         } else {
 581                 link->conf.Vpp = 0;
 582         }
 583
 584         link->conf.IntType = INT_MEMORY;
 585         link->conf.ConfigIndex = 0;
 586         DEBUG(2, "Setting Configuration");
 587         ret = pcmcia_request_configuration(link, &link->conf);
 588         if (ret != 0) {
 589                 if (dev->win_base) {
 590                         iounmap(dev->win_base);
 591                         dev->win_base = NULL;
 592                 }
 593                 return -ENODEV;
 594         }
 595
 596         if(mem_type == 1) {
 597                 mtd = do_map_probe("map_ram", &dev->pcmcia_map);
 598         } else if(mem_type == 2) {
 599                 mtd = do_map_probe("map_rom", &dev->pcmcia_map);
 600         } else {
 601                 for(i = 0; i < ARRAY_SIZE(probes); i++) {
 602                         DEBUG(1, "Trying %s", probes[i]);
 603                         mtd = do_map_probe(probes[i], &dev->pcmcia_map);
 604                         if(mtd)
 605                                 break;
 606
 607                         DEBUG(1, "FAILED: %s", probes[i]);
 608                 }
 609         }
 610
 611         if(!mtd) {
 612                 DEBUG(1, "Can not find an MTD");
 613                 pcmciamtd_release(link);
 614                 return -ENODEV;
 615         }
 616
 617         dev->mtd_info = mtd;
 618         mtd->owner = THIS_MODULE;
 619
 620         if(new_name) {
 621                 int size = 0;
 622                 char unit = ' ';
 623                 /* Since we are using a default name, make it better by adding
 624                  * in the size
 625                  */
 626                 if(mtd->size < 1048576) { /* <1MiB in size, show size in KiB */
 627                         size = mtd->size >> 10;
 628                         unit = 'K';
 629                 } else {
 630                         size = mtd->size >> 20;
 631                         unit = 'M';
 632                 }
 633                 snprintf(dev->mtd_name, sizeof(dev->mtd_name), "%d%ciB %s", size, unit, "PCMCIA Memory card");
 634         }
 635
 636         /* If the memory found is fits completely into the mapped PCMCIA window,
 637            use the faster non-remapping read/write functions */
 638         if(mtd->size <= dev->win_size) {
 639                 DEBUG(1, "Using non remapping memory functions");
 640                 dev->pcmcia_map.map_priv_2 = (unsigned long)dev->win_base;
 641                 if (dev->pcmcia_map.bankwidth == 1) {
 642                         dev->pcmcia_map.read = pcmcia_read8;
 643                         dev->pcmcia_map.write = pcmcia_write8;
 644                 } else {
 645                         dev->pcmcia_map.read = pcmcia_read16;
 646                         dev->pcmcia_map.write = pcmcia_write16;
 647                 }
 648                 dev->pcmcia_map.copy_from = pcmcia_copy_from;
 649                 dev->pcmcia_map.copy_to = pcmcia_copy_to;
 650         }
 651
 652         if(add_mtd_device(mtd)) {
 653                 map_destroy(mtd);
 654                 dev->mtd_info = NULL;
 655                 dev_err(&dev->p_dev->dev,
 656                         "Could not register the MTD device\n");
 657                 pcmciamtd_release(link);
 658                 return -ENODEV;
 659         }
 660         dev_info(&dev->p_dev->dev, "mtd%d: %s\n", mtd->index, mtd->name);
 661         return 0;
 662
 663         dev_err(&dev->p_dev->dev, "CS Error, exiting\n");
 664         pcmciamtd_release(link);
 665         return -ENODEV;
 666 }
 667
 668
 669 static int pcmciamtd_suspend(struct pcmcia_device *dev)
 670 {
 671         DEBUG(2, "EVENT_PM_RESUME");
 672
 673         /* get_lock(link); */
 674
 675         return 0;
 676 }
 677
 678 static int pcmciamtd_resume(struct pcmcia_device *dev)
 679 {
 680         DEBUG(2, "EVENT_PM_SUSPEND");
 681
 682         /* free_lock(link); */
 683
 684         return 0;
 685 }
 686
 687
 688 /* This deletes a driver "instance".  The device is de-registered
 689  * with Card Services.  If it has been released, all local data
 690  * structures are freed.  Otherwise, the structures will be freed
 691  * when the device is released.
 692  */
 693
 694 static void pcmciamtd_detach(struct pcmcia_device *link)
 695 {
 696         struct pcmciamtd_dev *dev = link->priv;
 697
 698         DEBUG(3, "link=0x%p", link);
 699
 700         if(dev->mtd_info) {
 701                 del_mtd_device(dev->mtd_info);
 702                 dev_info(&dev->p_dev->dev, "mtd%d: Removing\n",
 703                          dev->mtd_info->index);
 704                 map_destroy(dev->mtd_info);
 705         }
 706
 707         pcmciamtd_release(link);
 708 }
 709
 710
 711 /* pcmciamtd_attach() creates an "instance" of the driver, allocating
 712  * local data structures for one device.  The device is registered
 713  * with Card Services.
 714  */
 715
 716 static int pcmciamtd_probe(struct pcmcia_device *link)
 717 {
 718         struct pcmciamtd_dev *dev;
 719
 720         /* Create new memory card device */
 721         dev = kzalloc(sizeof(*dev), GFP_KERNEL);
 722         if (!dev) return -ENOMEM;
 723         DEBUG(1, "dev=0x%p", dev);
 724
 725         dev->p_dev = link;
 726         link->priv = dev;
 727
 728         link->conf.Attributes = 0;
 729         link->conf.IntType = INT_MEMORY;
 730
 731         return pcmciamtd_config(link);
 732 }
 733
 734 static struct pcmcia_device_id pcmciamtd_ids[] = {
 735         PCMCIA_DEVICE_FUNC_ID(1),
 736         PCMCIA_DEVICE_PROD_ID123("IO DATA", "PCS-2M", "2MB SRAM", 0x547e66dc, 0x1fed36cd, 0x36eadd21),
 737         PCMCIA_DEVICE_PROD_ID12("IBM", "2MB SRAM", 0xb569a6e5, 0x36eadd21),
 738         PCMCIA_DEVICE_PROD_ID12("IBM", "4MB FLASH", 0xb569a6e5, 0x8bc54d2a),
 739         PCMCIA_DEVICE_PROD_ID12("IBM", "8MB FLASH", 0xb569a6e5, 0x6df1be3e),
 740         PCMCIA_DEVICE_PROD_ID12("Intel", "S2E20SW", 0x816cc815, 0xd14c9dcf),
 741         PCMCIA_DEVICE_PROD_ID12("Intel", "S2E8 SW", 0x816cc815, 0xa2d7dedb),
 742         PCMCIA_DEVICE_PROD_ID12("intel", "SERIES2-02 ", 0x40ade711, 0x145cea5c),
 743         PCMCIA_DEVICE_PROD_ID12("intel", "SERIES2-04 ", 0x40ade711, 0x42064dda),
 744         PCMCIA_DEVICE_PROD_ID12("intel", "SERIES2-20 ", 0x40ade711, 0x25ee5cb0),
 745         PCMCIA_DEVICE_PROD_ID12("intel", "VALUE SERIES 100 ", 0x40ade711, 0xdf8506d8),
 746         PCMCIA_DEVICE_PROD_ID12("KINGMAX TECHNOLOGY INC.", "SRAM 256K Bytes", 0x54d0c69c, 0xad12c29c),
 747         PCMCIA_DEVICE_PROD_ID12("Maxtor", "MAXFL MobileMax Flash Memory Card", 0xb68968c8, 0x2dfb47b0),
 748         PCMCIA_DEVICE_PROD_ID123("M-Systems", "M-SYS Flash Memory Card", "(c) M-Systems", 0x7ed2ad87, 0x675dc3fb, 0x7aef3965),
 749         PCMCIA_DEVICE_PROD_ID12("PRETEC", "  2MB SRAM CARD", 0xebf91155, 0x805360ca),
 750         PCMCIA_DEVICE_PROD_ID12("SEIKO EPSON", "WWB101EN20", 0xf9876baf, 0xad0b207b),
 751         PCMCIA_DEVICE_PROD_ID12("SEIKO EPSON", "WWB513EN20", 0xf9876baf, 0xe8d884ad),
 752         PCMCIA_DEVICE_PROD_ID12("SMART Modular Technologies", " 4MB FLASH Card", 0x96fd8277, 0x737a5b05),
 753         PCMCIA_DEVICE_PROD_ID12("Starfish, Inc.", "REX-3000", 0x05ddca47, 0xe7d67bca),
 754         PCMCIA_DEVICE_PROD_ID12("Starfish, Inc.", "REX-4100", 0x05ddca47, 0x7bc32944),
 755         /* the following was commented out in pcmcia-cs-3.2.7 */
 756         /* PCMCIA_DEVICE_PROD_ID12("RATOC Systems,Inc.", "SmartMedia ADAPTER PC Card", 0xf4a2fefe, 0x5885b2ae), */
 757 #ifdef CONFIG_MTD_PCMCIA_ANONYMOUS
 758         { .match_flags = PCMCIA_DEV_ID_MATCH_ANONYMOUS, },
 759 #endif
 760         PCMCIA_DEVICE_NULL
 761 };
 762 MODULE_DEVICE_TABLE(pcmcia, pcmciamtd_ids);
 763
 764 static struct pcmcia_driver pcmciamtd_driver = {
 765         .drv            = {
 766                 .name   = "pcmciamtd"
 767         },
 768         .probe          = pcmciamtd_probe,
 769         .remove         = pcmciamtd_detach,
 770         .owner          = THIS_MODULE,
 771         .id_table       = pcmciamtd_ids,
 772         .suspend        = pcmciamtd_suspend,
 773         .resume         = pcmciamtd_resume,
 774 };
 775
 776
 777 static int __init init_pcmciamtd(void)
 778 {
 779         info(DRIVER_DESC);
 780
 781         if(bankwidth && bankwidth != 1 && bankwidth != 2) {
 782                 info("bad bankwidth (%d), using default", bankwidth);
 783                 bankwidth = 2;
 784         }
 785         if(force_size && (force_size < 1 || force_size > 64)) {
 786                 info("bad force_size (%d), using default", force_size);
 787                 force_size = 0;
 788         }
 789         if(mem_type && mem_type != 1 && mem_type != 2) {
 790                 info("bad mem_type (%d), using default", mem_type);
 791                 mem_type = 0;
 792         }
 793         return pcmcia_register_driver(&pcmciamtd_driver);
 794 }
 795
 796
 797 static void __exit exit_pcmciamtd(void)
 798 {
 799         DEBUG(1, DRIVER_DESC " unloading");
 800         pcmcia_unregister_driver(&pcmciamtd_driver);
 801 }
 802
 803 module_init(init_pcmciamtd);
 804 module_exit(exit_pcmciamtd);