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
 320         DEBUG(2, "dev = %p on = %d vpp = %d\n", dev, on, dev->vpp);
 321         pcmcia_fixup_vpp(link, on ? dev->vpp : 0);
 322 }
 323
 324
 325 /* After a card is removed, pcmciamtd_release() will unregister the
 326  * device, and release the PCMCIA configuration.  If the device is
 327  * still open, this will be postponed until it is closed.
 328  */
 329
 330 static void pcmciamtd_release(struct pcmcia_device *link)
 331 {
 332         struct pcmciamtd_dev *dev = link->priv;
 333
 334         DEBUG(3, "link = 0x%p", link);
 335
 336         if (link->resource[2]->end) {
 337                 if(dev->win_base) {
 338                         iounmap(dev->win_base);
 339                         dev->win_base = NULL;
 340                 }
 341         }
 342         pcmcia_disable_device(link);
 343 }
 344
 345
 346 #ifdef CONFIG_MTD_DEBUG
 347 static int pcmciamtd_cistpl_format(struct pcmcia_device *p_dev,
 348                                 tuple_t *tuple,
 349                                 void *priv_data)
 350 {
 351         cisparse_t parse;
 352
 353         if (!pcmcia_parse_tuple(tuple, &parse)) {
 354                 cistpl_format_t *t = &parse.format;
 355                 (void)t; /* Shut up, gcc */
 356                 DEBUG(2, "Format type: %u, Error Detection: %u, offset = %u, length =%u",
 357                         t->type, t->edc, t->offset, t->length);
 358         }
 359         return -ENOSPC;
 360 }
 361
 362 static int pcmciamtd_cistpl_jedec(struct pcmcia_device *p_dev,
 363                                 tuple_t *tuple,
 364                                 void *priv_data)
 365 {
 366         cisparse_t parse;
 367         int i;
 368
 369         if (!pcmcia_parse_tuple(tuple, &parse)) {
 370                 cistpl_jedec_t *t = &parse.jedec;
 371                 for (i = 0; i < t->nid; i++)
 372                         DEBUG(2, "JEDEC: 0x%02x 0x%02x",
 373                               t->id[i].mfr, t->id[i].info);
 374         }
 375         return -ENOSPC;
 376 }
 377 #endif
 378
 379 static int pcmciamtd_cistpl_device(struct pcmcia_device *p_dev,
 380                                 tuple_t *tuple,
 381                                 void *priv_data)
 382 {
 383         struct pcmciamtd_dev *dev = priv_data;
 384         cisparse_t parse;
 385         cistpl_device_t *t = &parse.device;
 386         int i;
 387
 388         if (pcmcia_parse_tuple(tuple, &parse))
 389                 return -EINVAL;
 390
 391         DEBUG(2, "Common memory:");
 392         dev->pcmcia_map.size = t->dev[0].size;
 393         /* from here on: DEBUG only */
 394         for (i = 0; i < t->ndev; i++) {
 395                 DEBUG(2, "Region %d, type = %u", i, t->dev[i].type);
 396                 DEBUG(2, "Region %d, wp = %u", i, t->dev[i].wp);
 397                 DEBUG(2, "Region %d, speed = %u ns", i, t->dev[i].speed);
 398                 DEBUG(2, "Region %d, size = %u bytes", i, t->dev[i].size);
 399         }
 400         return 0;
 401 }
 402
 403 static int pcmciamtd_cistpl_geo(struct pcmcia_device *p_dev,
 404                                 tuple_t *tuple,
 405                                 void *priv_data)
 406 {
 407         struct pcmciamtd_dev *dev = priv_data;
 408         cisparse_t parse;
 409         cistpl_device_geo_t *t = &parse.device_geo;
 410         int i;
 411
 412         if (pcmcia_parse_tuple(tuple, &parse))
 413                 return -EINVAL;
 414
 415         dev->pcmcia_map.bankwidth = t->geo[0].buswidth;
 416         /* from here on: DEBUG only */
 417         for (i = 0; i < t->ngeo; i++) {
 418                 DEBUG(2, "region: %d bankwidth = %u", i, t->geo[i].buswidth);
 419                 DEBUG(2, "region: %d erase_block = %u", i, t->geo[i].erase_block);
 420                 DEBUG(2, "region: %d read_block = %u", i, t->geo[i].read_block);
 421                 DEBUG(2, "region: %d write_block = %u", i, t->geo[i].write_block);
 422                 DEBUG(2, "region: %d partition = %u", i, t->geo[i].partition);
 423                 DEBUG(2, "region: %d interleave = %u", i, t->geo[i].interleave);
 424         }
 425         return 0;
 426 }
 427
 428
 429 static void card_settings(struct pcmciamtd_dev *dev, struct pcmcia_device *p_dev, int *new_name)
 430 {
 431         int i;
 432
 433         if (p_dev->prod_id[0]) {
 434                 dev->mtd_name[0] = '\0';
 435                 for (i = 0; i < 4; i++) {
 436                         if (i)
 437                                 strcat(dev->mtd_name, " ");
 438                         if (p_dev->prod_id[i])
 439                                 strcat(dev->mtd_name, p_dev->prod_id[i]);
 440                 }
 441                 DEBUG(2, "Found name: %s", dev->mtd_name);
 442         }
 443
 444 #ifdef CONFIG_MTD_DEBUG
 445         pcmcia_loop_tuple(p_dev, CISTPL_FORMAT, pcmciamtd_cistpl_format, NULL);
 446         pcmcia_loop_tuple(p_dev, CISTPL_JEDEC_C, pcmciamtd_cistpl_jedec, NULL);
 447 #endif
 448         pcmcia_loop_tuple(p_dev, CISTPL_DEVICE, pcmciamtd_cistpl_device, dev);
 449         pcmcia_loop_tuple(p_dev, CISTPL_DEVICE_GEO, pcmciamtd_cistpl_geo, dev);
 450
 451         if(!dev->pcmcia_map.size)
 452                 dev->pcmcia_map.size = MAX_PCMCIA_ADDR;
 453
 454         if(!dev->pcmcia_map.bankwidth)
 455                 dev->pcmcia_map.bankwidth = 2;
 456
 457         if(force_size) {
 458                 dev->pcmcia_map.size = force_size << 20;
 459                 DEBUG(2, "size forced to %dM", force_size);
 460         }
 461
 462         if(bankwidth) {
 463                 dev->pcmcia_map.bankwidth = bankwidth;
 464                 DEBUG(2, "bankwidth forced to %d", bankwidth);
 465         }
 466
 467         dev->pcmcia_map.name = dev->mtd_name;
 468         if(!dev->mtd_name[0]) {
 469                 strcpy(dev->mtd_name, "PCMCIA Memory card");
 470                 *new_name = 1;
 471         }
 472
 473         DEBUG(1, "Device: Size: %lu Width:%d Name: %s",
 474               dev->pcmcia_map.size,
 475               dev->pcmcia_map.bankwidth << 3, dev->mtd_name);
 476 }
 477
 478
 479 /* pcmciamtd_config() is scheduled to run after a CARD_INSERTION event
 480  * is received, to configure the PCMCIA socket, and to make the
 481  * MTD device available to the system.
 482  */
 483
 484 static int pcmciamtd_config(struct pcmcia_device *link)
 485 {
 486         struct pcmciamtd_dev *dev = link->priv;
 487         struct mtd_info *mtd = NULL;
 488         int ret;
 489         int i, j = 0;
 490         static char *probes[] = { "jedec_probe", "cfi_probe" };
 491         int new_name = 0;
 492
 493         DEBUG(3, "link=0x%p", link);
 494
 495         card_settings(dev, link, &new_name);
 496
 497         dev->pcmcia_map.phys = NO_XIP;
 498         dev->pcmcia_map.copy_from = pcmcia_copy_from_remap;
 499         dev->pcmcia_map.copy_to = pcmcia_copy_to_remap;
 500         if (dev->pcmcia_map.bankwidth == 1) {
 501                 dev->pcmcia_map.read = pcmcia_read8_remap;
 502                 dev->pcmcia_map.write = pcmcia_write8_remap;
 503         } else {
 504                 dev->pcmcia_map.read = pcmcia_read16_remap;
 505                 dev->pcmcia_map.write = pcmcia_write16_remap;
 506         }
 507         if(setvpp == 1)
 508                 dev->pcmcia_map.set_vpp = pcmciamtd_set_vpp;
 509
 510         /* Request a memory window for PCMCIA. Some architeures can map windows
 511          * upto the maximum that PCMCIA can support (64MiB) - this is ideal and
 512          * we aim for a window the size of the whole card - otherwise we try
 513          * smaller windows until we succeed
 514          */
 515
 516         link->resource[2]->flags |=  WIN_MEMORY_TYPE_CM | WIN_ENABLE;
 517         link->resource[2]->flags |= (dev->pcmcia_map.bankwidth == 1) ?
 518                                         WIN_DATA_WIDTH_8 : WIN_DATA_WIDTH_16;
 519         link->resource[2]->start = 0;
 520         link->resource[2]->end = (force_size) ? force_size << 20 :
 521                                         MAX_PCMCIA_ADDR;
 522         dev->win_size = 0;
 523
 524         do {
 525                 int ret;
 526                 DEBUG(2, "requesting window with size = %luKiB memspeed = %d",
 527                         (unsigned long) resource_size(link->resource[2]) >> 10,
 528                         mem_speed);
 529                 ret = pcmcia_request_window(link, link->resource[2], mem_speed);
 530                 DEBUG(2, "ret = %d dev->win_size = %d", ret, dev->win_size);
 531                 if(ret) {
 532                         j++;
 533                         link->resource[2]->start = 0;
 534                         link->resource[2]->end = (force_size) ?
 535                                         force_size << 20 : MAX_PCMCIA_ADDR;
 536                         link->resource[2]->end >>= j;
 537                 } else {
 538                         DEBUG(2, "Got window of size %luKiB", (unsigned long)
 539                                 resource_size(link->resource[2]) >> 10);
 540                         dev->win_size = resource_size(link->resource[2]);
 541                         break;
 542                 }
 543         } while (link->resource[2]->end >= 0x1000);
 544
 545         DEBUG(2, "dev->win_size = %d", dev->win_size);
 546
 547         if(!dev->win_size) {
 548                 dev_err(&dev->p_dev->dev, "Cannot allocate memory window\n");
 549                 pcmciamtd_release(link);
 550                 return -ENODEV;
 551         }
 552         DEBUG(1, "Allocated a window of %dKiB", dev->win_size >> 10);
 553
 554         /* Get write protect status */
 555         dev->win_base = ioremap(link->resource[2]->start,
 556                                 resource_size(link->resource[2]));
 557         if(!dev->win_base) {
 558                 dev_err(&dev->p_dev->dev, "ioremap(%pR) failed\n",
 559                         link->resource[2]);
 560                 pcmciamtd_release(link);
 561                 return -ENODEV;
 562         }
 563         DEBUG(1, "mapped window dev = %p @ %pR, base = %p",
 564               dev, link->resource[2], dev->win_base);
 565
 566         dev->offset = 0;
 567         dev->pcmcia_map.map_priv_1 = (unsigned long)dev;
 568         dev->pcmcia_map.map_priv_2 = (unsigned long)link->resource[2];
 569
 570         dev->vpp = (vpp) ? vpp : link->socket->socket.Vpp;
 571         link->conf.Attributes = 0;
 572         if(setvpp == 2) {
 573                 link->conf.Vpp = dev->vpp;
 574         } else {
 575                 link->conf.Vpp = 0;
 576         }
 577
 578         link->conf.IntType = INT_MEMORY;
 579         link->conf.ConfigIndex = 0;
 580         DEBUG(2, "Setting Configuration");
 581         ret = pcmcia_request_configuration(link, &link->conf);
 582         if (ret != 0) {
 583                 if (dev->win_base) {
 584                         iounmap(dev->win_base);
 585                         dev->win_base = NULL;
 586                 }
 587                 return -ENODEV;
 588         }
 589
 590         if(mem_type == 1) {
 591                 mtd = do_map_probe("map_ram", &dev->pcmcia_map);
 592         } else if(mem_type == 2) {
 593                 mtd = do_map_probe("map_rom", &dev->pcmcia_map);
 594         } else {
 595                 for(i = 0; i < ARRAY_SIZE(probes); i++) {
 596                         DEBUG(1, "Trying %s", probes[i]);
 597                         mtd = do_map_probe(probes[i], &dev->pcmcia_map);
 598                         if(mtd)
 599                                 break;
 600
 601                         DEBUG(1, "FAILED: %s", probes[i]);
 602                 }
 603         }
 604
 605         if(!mtd) {
 606                 DEBUG(1, "Can not find an MTD");
 607                 pcmciamtd_release(link);
 608                 return -ENODEV;
 609         }
 610
 611         dev->mtd_info = mtd;
 612         mtd->owner = THIS_MODULE;
 613
 614         if(new_name) {
 615                 int size = 0;
 616                 char unit = ' ';
 617                 /* Since we are using a default name, make it better by adding
 618                  * in the size
 619                  */
 620                 if(mtd->size < 1048576) { /* <1MiB in size, show size in KiB */
 621                         size = mtd->size >> 10;
 622                         unit = 'K';
 623                 } else {
 624                         size = mtd->size >> 20;
 625                         unit = 'M';
 626                 }
 627                 snprintf(dev->mtd_name, sizeof(dev->mtd_name), "%d%ciB %s", size, unit, "PCMCIA Memory card");
 628         }
 629
 630         /* If the memory found is fits completely into the mapped PCMCIA window,
 631            use the faster non-remapping read/write functions */
 632         if(mtd->size <= dev->win_size) {
 633                 DEBUG(1, "Using non remapping memory functions");
 634                 dev->pcmcia_map.map_priv_2 = (unsigned long)dev->win_base;
 635                 if (dev->pcmcia_map.bankwidth == 1) {
 636                         dev->pcmcia_map.read = pcmcia_read8;
 637                         dev->pcmcia_map.write = pcmcia_write8;
 638                 } else {
 639                         dev->pcmcia_map.read = pcmcia_read16;
 640                         dev->pcmcia_map.write = pcmcia_write16;
 641                 }
 642                 dev->pcmcia_map.copy_from = pcmcia_copy_from;
 643                 dev->pcmcia_map.copy_to = pcmcia_copy_to;
 644         }
 645
 646         if(add_mtd_device(mtd)) {
 647                 map_destroy(mtd);
 648                 dev->mtd_info = NULL;
 649                 dev_err(&dev->p_dev->dev,
 650                         "Could not register the MTD device\n");
 651                 pcmciamtd_release(link);
 652                 return -ENODEV;
 653         }
 654         dev_info(&dev->p_dev->dev, "mtd%d: %s\n", mtd->index, mtd->name);
 655         return 0;
 656
 657         dev_err(&dev->p_dev->dev, "CS Error, exiting\n");
 658         pcmciamtd_release(link);
 659         return -ENODEV;
 660 }
 661
 662
 663 static int pcmciamtd_suspend(struct pcmcia_device *dev)
 664 {
 665         DEBUG(2, "EVENT_PM_RESUME");
 666
 667         /* get_lock(link); */
 668
 669         return 0;
 670 }
 671
 672 static int pcmciamtd_resume(struct pcmcia_device *dev)
 673 {
 674         DEBUG(2, "EVENT_PM_SUSPEND");
 675
 676         /* free_lock(link); */
 677
 678         return 0;
 679 }
 680
 681
 682 /* This deletes a driver "instance".  The device is de-registered
 683  * with Card Services.  If it has been released, all local data
 684  * structures are freed.  Otherwise, the structures will be freed
 685  * when the device is released.
 686  */
 687
 688 static void pcmciamtd_detach(struct pcmcia_device *link)
 689 {
 690         struct pcmciamtd_dev *dev = link->priv;
 691
 692         DEBUG(3, "link=0x%p", link);
 693
 694         if(dev->mtd_info) {
 695                 del_mtd_device(dev->mtd_info);
 696                 dev_info(&dev->p_dev->dev, "mtd%d: Removing\n",
 697                          dev->mtd_info->index);
 698                 map_destroy(dev->mtd_info);
 699         }
 700
 701         pcmciamtd_release(link);
 702 }
 703
 704
 705 /* pcmciamtd_attach() creates an "instance" of the driver, allocating
 706  * local data structures for one device.  The device is registered
 707  * with Card Services.
 708  */
 709
 710 static int pcmciamtd_probe(struct pcmcia_device *link)
 711 {
 712         struct pcmciamtd_dev *dev;
 713
 714         /* Create new memory card device */
 715         dev = kzalloc(sizeof(*dev), GFP_KERNEL);
 716         if (!dev) return -ENOMEM;
 717         DEBUG(1, "dev=0x%p", dev);
 718
 719         dev->p_dev = link;
 720         link->priv = dev;
 721
 722         link->conf.Attributes = 0;
 723         link->conf.IntType = INT_MEMORY;
 724
 725         return pcmciamtd_config(link);
 726 }
 727
 728 static struct pcmcia_device_id pcmciamtd_ids[] = {
 729         PCMCIA_DEVICE_FUNC_ID(1),
 730         PCMCIA_DEVICE_PROD_ID123("IO DATA", "PCS-2M", "2MB SRAM", 0x547e66dc, 0x1fed36cd, 0x36eadd21),
 731         PCMCIA_DEVICE_PROD_ID12("IBM", "2MB SRAM", 0xb569a6e5, 0x36eadd21),
 732         PCMCIA_DEVICE_PROD_ID12("IBM", "4MB FLASH", 0xb569a6e5, 0x8bc54d2a),
 733         PCMCIA_DEVICE_PROD_ID12("IBM", "8MB FLASH", 0xb569a6e5, 0x6df1be3e),
 734         PCMCIA_DEVICE_PROD_ID12("Intel", "S2E20SW", 0x816cc815, 0xd14c9dcf),
 735         PCMCIA_DEVICE_PROD_ID12("Intel", "S2E8 SW", 0x816cc815, 0xa2d7dedb),
 736         PCMCIA_DEVICE_PROD_ID12("intel", "SERIES2-02 ", 0x40ade711, 0x145cea5c),
 737         PCMCIA_DEVICE_PROD_ID12("intel", "SERIES2-04 ", 0x40ade711, 0x42064dda),
 738         PCMCIA_DEVICE_PROD_ID12("intel", "SERIES2-20 ", 0x40ade711, 0x25ee5cb0),
 739         PCMCIA_DEVICE_PROD_ID12("intel", "VALUE SERIES 100 ", 0x40ade711, 0xdf8506d8),
 740         PCMCIA_DEVICE_PROD_ID12("KINGMAX TECHNOLOGY INC.", "SRAM 256K Bytes", 0x54d0c69c, 0xad12c29c),
 741         PCMCIA_DEVICE_PROD_ID12("Maxtor", "MAXFL MobileMax Flash Memory Card", 0xb68968c8, 0x2dfb47b0),
 742         PCMCIA_DEVICE_PROD_ID123("M-Systems", "M-SYS Flash Memory Card", "(c) M-Systems", 0x7ed2ad87, 0x675dc3fb, 0x7aef3965),
 743         PCMCIA_DEVICE_PROD_ID12("PRETEC", "  2MB SRAM CARD", 0xebf91155, 0x805360ca),
 744         PCMCIA_DEVICE_PROD_ID12("SEIKO EPSON", "WWB101EN20", 0xf9876baf, 0xad0b207b),
 745         PCMCIA_DEVICE_PROD_ID12("SEIKO EPSON", "WWB513EN20", 0xf9876baf, 0xe8d884ad),
 746         PCMCIA_DEVICE_PROD_ID12("SMART Modular Technologies", " 4MB FLASH Card", 0x96fd8277, 0x737a5b05),
 747         PCMCIA_DEVICE_PROD_ID12("Starfish, Inc.", "REX-3000", 0x05ddca47, 0xe7d67bca),
 748         PCMCIA_DEVICE_PROD_ID12("Starfish, Inc.", "REX-4100", 0x05ddca47, 0x7bc32944),
 749         /* the following was commented out in pcmcia-cs-3.2.7 */
 750         /* PCMCIA_DEVICE_PROD_ID12("RATOC Systems,Inc.", "SmartMedia ADAPTER PC Card", 0xf4a2fefe, 0x5885b2ae), */
 751 #ifdef CONFIG_MTD_PCMCIA_ANONYMOUS
 752         { .match_flags = PCMCIA_DEV_ID_MATCH_ANONYMOUS, },
 753 #endif
 754         PCMCIA_DEVICE_NULL
 755 };
 756 MODULE_DEVICE_TABLE(pcmcia, pcmciamtd_ids);
 757
 758 static struct pcmcia_driver pcmciamtd_driver = {
 759         .drv            = {
 760                 .name   = "pcmciamtd"
 761         },
 762         .probe          = pcmciamtd_probe,
 763         .remove         = pcmciamtd_detach,
 764         .owner          = THIS_MODULE,
 765         .id_table       = pcmciamtd_ids,
 766         .suspend        = pcmciamtd_suspend,
 767         .resume         = pcmciamtd_resume,
 768 };
 769
 770
 771 static int __init init_pcmciamtd(void)
 772 {
 773         info(DRIVER_DESC);
 774
 775         if(bankwidth && bankwidth != 1 && bankwidth != 2) {
 776                 info("bad bankwidth (%d), using default", bankwidth);
 777                 bankwidth = 2;
 778         }
 779         if(force_size && (force_size < 1 || force_size > 64)) {
 780                 info("bad force_size (%d), using default", force_size);
 781                 force_size = 0;
 782         }
 783         if(mem_type && mem_type != 1 && mem_type != 2) {
 784                 info("bad mem_type (%d), using default", mem_type);
 785                 mem_type = 0;
 786         }
 787         return pcmcia_register_driver(&pcmciamtd_driver);
 788 }
 789
 790
 791 static void __exit exit_pcmciamtd(void)
 792 {
 793         DEBUG(1, DRIVER_DESC " unloading");
 794         pcmcia_unregister_driver(&pcmciamtd_driver);
 795 }
 796
 797 module_init(init_pcmciamtd);
 798 module_exit(exit_pcmciamtd);