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_types.h>
  20 #include <pcmcia/cs.h>
  21 #include <pcmcia/cistpl.h>
  22 #include <pcmcia/ds.h>
  23
  24 #include <linux/mtd/map.h>
  25 #include <linux/mtd/mtd.h>
  26
  27 #ifdef CONFIG_MTD_DEBUG
  28 static int debug = CONFIG_MTD_DEBUG_VERBOSE;
  29 module_param(debug, int, 0);
  30 MODULE_PARM_DESC(debug, "Set Debug Level 0=quiet, 5=noisy");
  31 #undef DEBUG
  32 #define DEBUG(n, format, arg...) \
  33         if (n <= debug) {        \
  34                 printk(KERN_DEBUG __FILE__ ":%s(): " format "\n", __func__ , ## arg); \
  35         }
  36
  37 #else
  38 #undef DEBUG
  39 #define DEBUG(n, arg...)
  40 static const int debug = 0;
  41 #endif
  42
  43 #define err(format, arg...) printk(KERN_ERR "pcmciamtd: " format "\n" , ## arg)
  44 #define info(format, arg...) printk(KERN_INFO "pcmciamtd: " format "\n" , ## arg)
  45 #define warn(format, arg...) printk(KERN_WARNING "pcmciamtd: " format "\n" , ## arg)
  46
  47
  48 #define DRIVER_DESC     "PCMCIA Flash memory card driver"
  49
  50 /* Size of the PCMCIA address space: 26 bits = 64 MB */
  51 #define MAX_PCMCIA_ADDR 0x4000000
  52
  53 struct pcmciamtd_dev {
  54         struct pcmcia_device    *p_dev;
  55         dev_node_t      node;           /* device node */
  56         caddr_t         win_base;       /* ioremapped address of PCMCIA window */
  57         unsigned int    win_size;       /* size of window */
  58         unsigned int    offset;         /* offset into card the window currently points at */
  59         struct map_info pcmcia_map;
  60         struct mtd_info *mtd_info;
  61         int             vpp;
  62         char            mtd_name[sizeof(struct cistpl_vers_1_t)];
  63 };
  64
  65
  66 /* Module parameters */
  67
  68 /* 2 = do 16-bit transfers, 1 = do 8-bit transfers */
  69 static int bankwidth = 2;
  70
  71 /* Speed of memory accesses, in ns */
  72 static int mem_speed;
  73
  74 /* Force the size of an SRAM card */
  75 static int force_size;
  76
  77 /* Force Vpp */
  78 static int vpp;
  79
  80 /* Set Vpp */
  81 static int setvpp;
  82
  83 /* Force card to be treated as FLASH, ROM or RAM */
  84 static int mem_type;
  85
  86 MODULE_LICENSE("GPL");
  87 MODULE_AUTHOR("Simon Evans <spse@secret.org.uk>");
  88 MODULE_DESCRIPTION(DRIVER_DESC);
  89 module_param(bankwidth, int, 0);
  90 MODULE_PARM_DESC(bankwidth, "Set bankwidth (1=8 bit, 2=16 bit, default=2)");
  91 module_param(mem_speed, int, 0);
  92 MODULE_PARM_DESC(mem_speed, "Set memory access speed in ns");
  93 module_param(force_size, int, 0);
  94 MODULE_PARM_DESC(force_size, "Force size of card in MiB (1-64)");
  95 module_param(setvpp, int, 0);
  96 MODULE_PARM_DESC(setvpp, "Set Vpp (0=Never, 1=On writes, 2=Always on, default=0)");
  97 module_param(vpp, int, 0);
  98 MODULE_PARM_DESC(vpp, "Vpp value in 1/10ths eg 33=3.3V 120=12V (Dangerous)");
  99 module_param(mem_type, int, 0);
 100 MODULE_PARM_DESC(mem_type, "Set Memory type (0=Flash, 1=RAM, 2=ROM, default=0)");
 101
 102
 103 /* read/write{8,16} copy_{from,to} routines with window remapping to access whole card */
 104 static caddr_t remap_window(struct map_info *map, unsigned long to)
 105 {
 106         struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1;
 107         window_handle_t win = (window_handle_t)map->map_priv_2;
 108         memreq_t mrq;
 109         int ret;
 110
 111         if (!pcmcia_dev_present(dev->p_dev)) {
 112                 DEBUG(1, "device removed");
 113                 return 0;
 114         }
 115
 116         mrq.CardOffset = to & ~(dev->win_size-1);
 117         if(mrq.CardOffset != dev->offset) {
 118                 DEBUG(2, "Remapping window from 0x%8.8x to 0x%8.8x",
 119                       dev->offset, mrq.CardOffset);
 120                 mrq.Page = 0;
 121                 ret = pcmcia_map_mem_page(dev->p_dev, win, &mrq);
 122                 if (ret != 0)
 123                         return NULL;
 124                 dev->offset = mrq.CardOffset;
 125         }
 126         return dev->win_base + (to & (dev->win_size-1));
 127 }
 128
 129
 130 static map_word pcmcia_read8_remap(struct map_info *map, unsigned long ofs)
 131 {
 132         caddr_t addr;
 133         map_word d = {{0}};
 134
 135         addr = remap_window(map, ofs);
 136         if(!addr)
 137                 return d;
 138
 139         d.x[0] = readb(addr);
 140         DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%02x", ofs, addr, d.x[0]);
 141         return d;
 142 }
 143
 144
 145 static map_word pcmcia_read16_remap(struct map_info *map, unsigned long ofs)
 146 {
 147         caddr_t addr;
 148         map_word d = {{0}};
 149
 150         addr = remap_window(map, ofs);
 151         if(!addr)
 152                 return d;
 153
 154         d.x[0] = readw(addr);
 155         DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%04x", ofs, addr, d.x[0]);
 156         return d;
 157 }
 158
 159
 160 static void pcmcia_copy_from_remap(struct map_info *map, void *to, unsigned long from, ssize_t len)
 161 {
 162         struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1;
 163         unsigned long win_size = dev->win_size;
 164
 165         DEBUG(3, "to = %p from = %lu len = %u", to, from, len);
 166         while(len) {
 167                 int toread = win_size - (from & (win_size-1));
 168                 caddr_t addr;
 169
 170                 if(toread > len)
 171                         toread = len;
 172
 173                 addr = remap_window(map, from);
 174                 if(!addr)
 175                         return;
 176
 177                 DEBUG(4, "memcpy from %p to %p len = %d", addr, to, toread);
 178                 memcpy_fromio(to, addr, toread);
 179                 len -= toread;
 180                 to += toread;
 181                 from += toread;
 182         }
 183 }
 184
 185
 186 static void pcmcia_write8_remap(struct map_info *map, map_word d, unsigned long adr)
 187 {
 188         caddr_t addr = remap_window(map, adr);
 189
 190         if(!addr)
 191                 return;
 192
 193         DEBUG(3, "adr = 0x%08lx (%p)  data = 0x%02x", adr, addr, d.x[0]);
 194         writeb(d.x[0], addr);
 195 }
 196
 197
 198 static void pcmcia_write16_remap(struct map_info *map, map_word d, unsigned long adr)
 199 {
 200         caddr_t addr = remap_window(map, adr);
 201         if(!addr)
 202                 return;
 203
 204         DEBUG(3, "adr = 0x%08lx (%p)  data = 0x%04x", adr, addr, d.x[0]);
 205         writew(d.x[0], addr);
 206 }
 207
 208
 209 static void pcmcia_copy_to_remap(struct map_info *map, unsigned long to, const void *from, ssize_t len)
 210 {
 211         struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1;
 212         unsigned long win_size = dev->win_size;
 213
 214         DEBUG(3, "to = %lu from = %p len = %u", to, from, len);
 215         while(len) {
 216                 int towrite = win_size - (to & (win_size-1));
 217                 caddr_t addr;
 218
 219                 if(towrite > len)
 220                         towrite = len;
 221
 222                 addr = remap_window(map, to);
 223                 if(!addr)
 224                         return;
 225
 226                 DEBUG(4, "memcpy from %p to %p len = %d", from, addr, towrite);
 227                 memcpy_toio(addr, from, towrite);
 228                 len -= towrite;
 229                 to += towrite;
 230                 from += towrite;
 231         }
 232 }
 233
 234
 235 /* read/write{8,16} copy_{from,to} routines with direct access */
 236
 237 #define DEV_REMOVED(x)  (!(pcmcia_dev_present(((struct pcmciamtd_dev *)map->map_priv_1)->p_dev)))
 238
 239 static map_word pcmcia_read8(struct map_info *map, unsigned long ofs)
 240 {
 241         caddr_t win_base = (caddr_t)map->map_priv_2;
 242         map_word d = {{0}};
 243
 244         if(DEV_REMOVED(map))
 245                 return d;
 246
 247         d.x[0] = readb(win_base + ofs);
 248         DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%02x", ofs, win_base + ofs, d.x[0]);
 249         return d;
 250 }
 251
 252
 253 static map_word pcmcia_read16(struct map_info *map, unsigned long ofs)
 254 {
 255         caddr_t win_base = (caddr_t)map->map_priv_2;
 256         map_word d = {{0}};
 257
 258         if(DEV_REMOVED(map))
 259                 return d;
 260
 261         d.x[0] = readw(win_base + ofs);
 262         DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%04x", ofs, win_base + ofs, d.x[0]);
 263         return d;
 264 }
 265
 266
 267 static void pcmcia_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len)
 268 {
 269         caddr_t win_base = (caddr_t)map->map_priv_2;
 270
 271         if(DEV_REMOVED(map))
 272                 return;
 273
 274         DEBUG(3, "to = %p from = %lu len = %u", to, from, len);
 275         memcpy_fromio(to, win_base + from, len);
 276 }
 277
 278
 279 static void pcmcia_write8(struct map_info *map, u8 d, unsigned long adr)
 280 {
 281         caddr_t win_base = (caddr_t)map->map_priv_2;
 282
 283         if(DEV_REMOVED(map))
 284                 return;
 285
 286         DEBUG(3, "adr = 0x%08lx (%p)  data = 0x%02x", adr, win_base + adr, d);
 287         writeb(d, win_base + adr);
 288 }
 289
 290
 291 static void pcmcia_write16(struct map_info *map, u16 d, unsigned long adr)
 292 {
 293         caddr_t win_base = (caddr_t)map->map_priv_2;
 294
 295         if(DEV_REMOVED(map))
 296                 return;
 297
 298         DEBUG(3, "adr = 0x%08lx (%p)  data = 0x%04x", adr, win_base + adr, d);
 299         writew(d, 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 = %u", 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->win) {
 343                 if(dev->win_base) {
 344                         iounmap(dev->win_base);
 345                         dev->win_base = NULL;
 346                 }
 347                 pcmcia_release_window(link, link->win);
 348         }
 349         pcmcia_disable_device(link);
 350 }
 351
 352
 353 #ifdef CONFIG_MTD_DEBUG
 354 static int pcmciamtd_cistpl_format(struct pcmcia_device *p_dev,
 355                                 tuple_t *tuple,
 356                                 void *priv_data)
 357 {
 358         cisparse_t parse;
 359
 360         if (!pcmcia_parse_tuple(tuple, &parse)) {
 361                 cistpl_format_t *t = &parse.format;
 362                 (void)t; /* Shut up, gcc */
 363                 DEBUG(2, "Format type: %u, Error Detection: %u, offset = %u, length =%u",
 364                         t->type, t->edc, t->offset, t->length);
 365         }
 366         return -ENOSPC;
 367 }
 368
 369 static int pcmciamtd_cistpl_jedec(struct pcmcia_device *p_dev,
 370                                 tuple_t *tuple,
 371                                 void *priv_data)
 372 {
 373         cisparse_t parse;
 374         int i;
 375
 376         if (!pcmcia_parse_tuple(tuple, &parse)) {
 377                 cistpl_jedec_t *t = &parse.jedec;
 378                 for (i = 0; i < t->nid; i++)
 379                         DEBUG(2, "JEDEC: 0x%02x 0x%02x", 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 *link, 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, dev->pcmcia_map.bankwidth << 3, dev->mtd_name);
 481 }
 482
 483
 484 /* pcmciamtd_config() is scheduled to run after a CARD_INSERTION event
 485  * is received, to configure the PCMCIA socket, and to make the
 486  * MTD device available to the system.
 487  */
 488
 489 static int pcmciamtd_config(struct pcmcia_device *link)
 490 {
 491         struct pcmciamtd_dev *dev = link->priv;
 492         struct mtd_info *mtd = NULL;
 493         cs_status_t status;
 494         win_req_t req;
 495         int ret;
 496         int i;
 497         static char *probes[] = { "jedec_probe", "cfi_probe" };
 498         int new_name = 0;
 499
 500         DEBUG(3, "link=0x%p", link);
 501
 502         card_settings(dev, link, &new_name);
 503
 504         dev->pcmcia_map.phys = NO_XIP;
 505         dev->pcmcia_map.copy_from = pcmcia_copy_from_remap;
 506         dev->pcmcia_map.copy_to = pcmcia_copy_to_remap;
 507         if (dev->pcmcia_map.bankwidth == 1) {
 508                 dev->pcmcia_map.read = pcmcia_read8_remap;
 509                 dev->pcmcia_map.write = pcmcia_write8_remap;
 510         } else {
 511                 dev->pcmcia_map.read = pcmcia_read16_remap;
 512                 dev->pcmcia_map.write = pcmcia_write16_remap;
 513         }
 514         if(setvpp == 1)
 515                 dev->pcmcia_map.set_vpp = pcmciamtd_set_vpp;
 516
 517         /* Request a memory window for PCMCIA. Some architeures can map windows upto the maximum
 518            that PCMCIA can support (64MiB) - this is ideal and we aim for a window the size of the
 519            whole card - otherwise we try smaller windows until we succeed */
 520
 521         req.Attributes =  WIN_MEMORY_TYPE_CM | WIN_ENABLE;
 522         req.Attributes |= (dev->pcmcia_map.bankwidth == 1) ? WIN_DATA_WIDTH_8 : WIN_DATA_WIDTH_16;
 523         req.Base = 0;
 524         req.AccessSpeed = mem_speed;
 525         link->win = (window_handle_t)link;
 526         req.Size = (force_size) ? force_size << 20 : MAX_PCMCIA_ADDR;
 527         dev->win_size = 0;
 528
 529         do {
 530                 int ret;
 531                 DEBUG(2, "requesting window with size = %dKiB memspeed = %d",
 532                       req.Size >> 10, req.AccessSpeed);
 533                 ret = pcmcia_request_window(link, &req, &link->win);
 534                 DEBUG(2, "ret = %d dev->win_size = %d", ret, dev->win_size);
 535                 if(ret) {
 536                         req.Size >>= 1;
 537                 } else {
 538                         DEBUG(2, "Got window of size %dKiB", req.Size >> 10);
 539                         dev->win_size = req.Size;
 540                         break;
 541                 }
 542         } while(req.Size >= 0x1000);
 543
 544         DEBUG(2, "dev->win_size = %d", dev->win_size);
 545
 546         if(!dev->win_size) {
 547                 err("Cant allocate memory window");
 548                 pcmciamtd_release(link);
 549                 return -ENODEV;
 550         }
 551         DEBUG(1, "Allocated a window of %dKiB", dev->win_size >> 10);
 552
 553         /* Get write protect status */
 554         DEBUG(2, "window handle = 0x%8.8lx", (unsigned long)link->win);
 555         dev->win_base = ioremap(req.Base, req.Size);
 556         if(!dev->win_base) {
 557                 err("ioremap(%lu, %u) failed", req.Base, req.Size);
 558                 pcmciamtd_release(link);
 559                 return -ENODEV;
 560         }
 561         DEBUG(1, "mapped window dev = %p req.base = 0x%lx base = %p size = 0x%x",
 562               dev, req.Base, dev->win_base, req.Size);
 563
 564         dev->offset = 0;
 565         dev->pcmcia_map.map_priv_1 = (unsigned long)dev;
 566         dev->pcmcia_map.map_priv_2 = (unsigned long)link->win;
 567
 568         dev->vpp = (vpp) ? vpp : link->socket.socket.Vpp;
 569         link->conf.Attributes = 0;
 570         if(setvpp == 2) {
 571                 link->conf.Vpp = dev->vpp;
 572         } else {
 573                 link->conf.Vpp = 0;
 574         }
 575
 576         link->conf.IntType = INT_MEMORY;
 577         link->conf.ConfigIndex = 0;
 578         DEBUG(2, "Setting Configuration");
 579         ret = pcmcia_request_configuration(link, &link->conf);
 580         if (ret != 0) {
 581                 if (dev->win_base) {
 582                         iounmap(dev->win_base);
 583                         dev->win_base = NULL;
 584                 }
 585                 return -ENODEV;
 586         }
 587
 588         if(mem_type == 1) {
 589                 mtd = do_map_probe("map_ram", &dev->pcmcia_map);
 590         } else if(mem_type == 2) {
 591                 mtd = do_map_probe("map_rom", &dev->pcmcia_map);
 592         } else {
 593                 for(i = 0; i < ARRAY_SIZE(probes); i++) {
 594                         DEBUG(1, "Trying %s", probes[i]);
 595                         mtd = do_map_probe(probes[i], &dev->pcmcia_map);
 596                         if(mtd)
 597                                 break;
 598
 599                         DEBUG(1, "FAILED: %s", probes[i]);
 600                 }
 601         }
 602
 603         if(!mtd) {
 604                 DEBUG(1, "Cant find an MTD");
 605                 pcmciamtd_release(link);
 606                 return -ENODEV;
 607         }
 608
 609         dev->mtd_info = mtd;
 610         mtd->owner = THIS_MODULE;
 611
 612         if(new_name) {
 613                 int size = 0;
 614                 char unit = ' ';
 615                 /* Since we are using a default name, make it better by adding in the
 616                    size */
 617                 if(mtd->size < 1048576) { /* <1MiB in size, show size in KiB */
 618                         size = mtd->size >> 10;
 619                         unit = 'K';
 620                 } else {
 621                         size = mtd->size >> 20;
 622                         unit = 'M';
 623                 }
 624                 snprintf(dev->mtd_name, sizeof(dev->mtd_name), "%d%ciB %s", size, unit, "PCMCIA Memory card");
 625         }
 626
 627         /* If the memory found is fits completely into the mapped PCMCIA window,
 628            use the faster non-remapping read/write functions */
 629         if(mtd->size <= dev->win_size) {
 630                 DEBUG(1, "Using non remapping memory functions");
 631                 dev->pcmcia_map.map_priv_2 = (unsigned long)dev->win_base;
 632                 if (dev->pcmcia_map.bankwidth == 1) {
 633                         dev->pcmcia_map.read = pcmcia_read8;
 634                         dev->pcmcia_map.write = pcmcia_write8;
 635                 } else {
 636                         dev->pcmcia_map.read = pcmcia_read16;
 637                         dev->pcmcia_map.write = pcmcia_write16;
 638                 }
 639                 dev->pcmcia_map.copy_from = pcmcia_copy_from;
 640                 dev->pcmcia_map.copy_to = pcmcia_copy_to;
 641         }
 642
 643         if(add_mtd_device(mtd)) {
 644                 map_destroy(mtd);
 645                 dev->mtd_info = NULL;
 646                 err("Couldnt register MTD device");
 647                 pcmciamtd_release(link);
 648                 return -ENODEV;
 649         }
 650         snprintf(dev->node.dev_name, sizeof(dev->node.dev_name), "mtd%d", mtd->index);
 651         info("mtd%d: %s", mtd->index, mtd->name);
 652         link->dev_node = &dev->node;
 653         return 0;
 654
 655  failed:
 656         err("CS Error, exiting");
 657         pcmciamtd_release(link);
 658         return -ENODEV;
 659 }
 660
 661
 662 static int pcmciamtd_suspend(struct pcmcia_device *dev)
 663 {
 664         DEBUG(2, "EVENT_PM_RESUME");
 665
 666         /* get_lock(link); */
 667
 668         return 0;
 669 }
 670
 671 static int pcmciamtd_resume(struct pcmcia_device *dev)
 672 {
 673         DEBUG(2, "EVENT_PM_SUSPEND");
 674
 675         /* free_lock(link); */
 676
 677         return 0;
 678 }
 679
 680
 681 /* This deletes a driver "instance".  The device is de-registered
 682  * with Card Services.  If it has been released, all local data
 683  * structures are freed.  Otherwise, the structures will be freed
 684  * when the device is released.
 685  */
 686
 687 static void pcmciamtd_detach(struct pcmcia_device *link)
 688 {
 689         struct pcmciamtd_dev *dev = link->priv;
 690
 691         DEBUG(3, "link=0x%p", link);
 692
 693         if(dev->mtd_info) {
 694                 del_mtd_device(dev->mtd_info);
 695                 map_destroy(dev->mtd_info);
 696                 info("mtd%d: Removed", dev->mtd_info->index);
 697         }
 698
 699         pcmciamtd_release(link);
 700 }
 701
 702
 703 /* pcmciamtd_attach() creates an "instance" of the driver, allocating
 704  * local data structures for one device.  The device is registered
 705  * with Card Services.
 706  */
 707
 708 static int pcmciamtd_probe(struct pcmcia_device *link)
 709 {
 710         struct pcmciamtd_dev *dev;
 711
 712         /* Create new memory card device */
 713         dev = kzalloc(sizeof(*dev), GFP_KERNEL);
 714         if (!dev) return -ENOMEM;
 715         DEBUG(1, "dev=0x%p", dev);
 716
 717         dev->p_dev = link;
 718         link->priv = dev;
 719
 720         link->conf.Attributes = 0;
 721         link->conf.IntType = INT_MEMORY;
 722
 723         return pcmciamtd_config(link);
 724 }
 725
 726 static struct pcmcia_device_id pcmciamtd_ids[] = {
 727         PCMCIA_DEVICE_FUNC_ID(1),
 728         PCMCIA_DEVICE_PROD_ID123("IO DATA", "PCS-2M", "2MB SRAM", 0x547e66dc, 0x1fed36cd, 0x36eadd21),
 729         PCMCIA_DEVICE_PROD_ID12("IBM", "2MB SRAM", 0xb569a6e5, 0x36eadd21),
 730         PCMCIA_DEVICE_PROD_ID12("IBM", "4MB FLASH", 0xb569a6e5, 0x8bc54d2a),
 731         PCMCIA_DEVICE_PROD_ID12("IBM", "8MB FLASH", 0xb569a6e5, 0x6df1be3e),
 732         PCMCIA_DEVICE_PROD_ID12("Intel", "S2E20SW", 0x816cc815, 0xd14c9dcf),
 733         PCMCIA_DEVICE_PROD_ID12("Intel", "S2E8 SW", 0x816cc815, 0xa2d7dedb),
 734         PCMCIA_DEVICE_PROD_ID12("intel", "SERIES2-02 ", 0x40ade711, 0x145cea5c),
 735         PCMCIA_DEVICE_PROD_ID12("intel", "SERIES2-04 ", 0x40ade711, 0x42064dda),
 736         PCMCIA_DEVICE_PROD_ID12("intel", "SERIES2-20 ", 0x40ade711, 0x25ee5cb0),
 737         PCMCIA_DEVICE_PROD_ID12("intel", "VALUE SERIES 100 ", 0x40ade711, 0xdf8506d8),
 738         PCMCIA_DEVICE_PROD_ID12("KINGMAX TECHNOLOGY INC.", "SRAM 256K Bytes", 0x54d0c69c, 0xad12c29c),
 739         PCMCIA_DEVICE_PROD_ID12("Maxtor", "MAXFL MobileMax Flash Memory Card", 0xb68968c8, 0x2dfb47b0),
 740         PCMCIA_DEVICE_PROD_ID12("SEIKO EPSON", "WWB101EN20", 0xf9876baf, 0xad0b207b),
 741         PCMCIA_DEVICE_PROD_ID12("SEIKO EPSON", "WWB513EN20", 0xf9876baf, 0xe8d884ad),
 742         PCMCIA_DEVICE_PROD_ID12("Starfish, Inc.", "REX-3000", 0x05ddca47, 0xe7d67bca),
 743         PCMCIA_DEVICE_PROD_ID12("Starfish, Inc.", "REX-4100", 0x05ddca47, 0x7bc32944),
 744         /* the following was commented out in pcmcia-cs-3.2.7 */
 745         /* PCMCIA_DEVICE_PROD_ID12("RATOC Systems,Inc.", "SmartMedia ADAPTER PC Card", 0xf4a2fefe, 0x5885b2ae), */
 746 #ifdef CONFIG_MTD_PCMCIA_ANONYMOUS
 747         { .match_flags = PCMCIA_DEV_ID_MATCH_ANONYMOUS, },
 748 #endif
 749         PCMCIA_DEVICE_NULL
 750 };
 751 MODULE_DEVICE_TABLE(pcmcia, pcmciamtd_ids);
 752
 753 static struct pcmcia_driver pcmciamtd_driver = {
 754         .drv            = {
 755                 .name   = "pcmciamtd"
 756         },
 757         .probe          = pcmciamtd_probe,
 758         .remove         = pcmciamtd_detach,
 759         .owner          = THIS_MODULE,
 760         .id_table       = pcmciamtd_ids,
 761         .suspend        = pcmciamtd_suspend,
 762         .resume         = pcmciamtd_resume,
 763 };
 764
 765
 766 static int __init init_pcmciamtd(void)
 767 {
 768         info(DRIVER_DESC);
 769
 770         if(bankwidth && bankwidth != 1 && bankwidth != 2) {
 771                 info("bad bankwidth (%d), using default", bankwidth);
 772                 bankwidth = 2;
 773         }
 774         if(force_size && (force_size < 1 || force_size > 64)) {
 775                 info("bad force_size (%d), using default", force_size);
 776                 force_size = 0;
 777         }
 778         if(mem_type && mem_type != 1 && mem_type != 2) {
 779                 info("bad mem_type (%d), using default", mem_type);
 780                 mem_type = 0;
 781         }
 782         return pcmcia_register_driver(&pcmciamtd_driver);
 783 }
 784
 785
 786 static void __exit exit_pcmciamtd(void)
 787 {
 788         DEBUG(1, DRIVER_DESC " unloading");
 789         pcmcia_unregister_driver(&pcmciamtd_driver);
 790 }
 791
 792 module_init(init_pcmciamtd);
 793 module_exit(exit_pcmciamtd);