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(win, &mrq);
 122                 if (ret != 0) {
 123                         cs_error(dev->p_dev, MapMemPage, ret);
 124                         return NULL;
 125                 }
 126                 dev->offset = mrq.CardOffset;
 127         }
 128         return dev->win_base + (to & (dev->win_size-1));
 129 }
 130
 131
 132 static map_word pcmcia_read8_remap(struct map_info *map, unsigned long ofs)
 133 {
 134         caddr_t addr;
 135         map_word d = {{0}};
 136
 137         addr = remap_window(map, ofs);
 138         if(!addr)
 139                 return d;
 140
 141         d.x[0] = readb(addr);
 142         DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%02x", ofs, addr, d.x[0]);
 143         return d;
 144 }
 145
 146
 147 static map_word pcmcia_read16_remap(struct map_info *map, unsigned long ofs)
 148 {
 149         caddr_t addr;
 150         map_word d = {{0}};
 151
 152         addr = remap_window(map, ofs);
 153         if(!addr)
 154                 return d;
 155
 156         d.x[0] = readw(addr);
 157         DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%04x", ofs, addr, d.x[0]);
 158         return d;
 159 }
 160
 161
 162 static void pcmcia_copy_from_remap(struct map_info *map, void *to, unsigned long from, ssize_t len)
 163 {
 164         struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1;
 165         unsigned long win_size = dev->win_size;
 166
 167         DEBUG(3, "to = %p from = %lu len = %u", to, from, len);
 168         while(len) {
 169                 int toread = win_size - (from & (win_size-1));
 170                 caddr_t addr;
 171
 172                 if(toread > len)
 173                         toread = len;
 174
 175                 addr = remap_window(map, from);
 176                 if(!addr)
 177                         return;
 178
 179                 DEBUG(4, "memcpy from %p to %p len = %d", addr, to, toread);
 180                 memcpy_fromio(to, addr, toread);
 181                 len -= toread;
 182                 to += toread;
 183                 from += toread;
 184         }
 185 }
 186
 187
 188 static void pcmcia_write8_remap(struct map_info *map, map_word d, unsigned long adr)
 189 {
 190         caddr_t addr = remap_window(map, adr);
 191
 192         if(!addr)
 193                 return;
 194
 195         DEBUG(3, "adr = 0x%08lx (%p)  data = 0x%02x", adr, addr, d.x[0]);
 196         writeb(d.x[0], addr);
 197 }
 198
 199
 200 static void pcmcia_write16_remap(struct map_info *map, map_word d, unsigned long adr)
 201 {
 202         caddr_t addr = remap_window(map, adr);
 203         if(!addr)
 204                 return;
 205
 206         DEBUG(3, "adr = 0x%08lx (%p)  data = 0x%04x", adr, addr, d.x[0]);
 207         writew(d.x[0], addr);
 208 }
 209
 210
 211 static void pcmcia_copy_to_remap(struct map_info *map, unsigned long to, const void *from, ssize_t len)
 212 {
 213         struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1;
 214         unsigned long win_size = dev->win_size;
 215
 216         DEBUG(3, "to = %lu from = %p len = %u", to, from, len);
 217         while(len) {
 218                 int towrite = win_size - (to & (win_size-1));
 219                 caddr_t addr;
 220
 221                 if(towrite > len)
 222                         towrite = len;
 223
 224                 addr = remap_window(map, to);
 225                 if(!addr)
 226                         return;
 227
 228                 DEBUG(4, "memcpy from %p to %p len = %d", from, addr, towrite);
 229                 memcpy_toio(addr, from, towrite);
 230                 len -= towrite;
 231                 to += towrite;
 232                 from += towrite;
 233         }
 234 }
 235
 236
 237 /* read/write{8,16} copy_{from,to} routines with direct access */
 238
 239 #define DEV_REMOVED(x)  (!(pcmcia_dev_present(((struct pcmciamtd_dev *)map->map_priv_1)->p_dev)))
 240
 241 static map_word pcmcia_read8(struct map_info *map, unsigned long ofs)
 242 {
 243         caddr_t win_base = (caddr_t)map->map_priv_2;
 244         map_word d = {{0}};
 245
 246         if(DEV_REMOVED(map))
 247                 return d;
 248
 249         d.x[0] = readb(win_base + ofs);
 250         DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%02x", ofs, win_base + ofs, d.x[0]);
 251         return d;
 252 }
 253
 254
 255 static map_word pcmcia_read16(struct map_info *map, unsigned long ofs)
 256 {
 257         caddr_t win_base = (caddr_t)map->map_priv_2;
 258         map_word d = {{0}};
 259
 260         if(DEV_REMOVED(map))
 261                 return d;
 262
 263         d.x[0] = readw(win_base + ofs);
 264         DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%04x", ofs, win_base + ofs, d.x[0]);
 265         return d;
 266 }
 267
 268
 269 static void pcmcia_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len)
 270 {
 271         caddr_t win_base = (caddr_t)map->map_priv_2;
 272
 273         if(DEV_REMOVED(map))
 274                 return;
 275
 276         DEBUG(3, "to = %p from = %lu len = %u", to, from, len);
 277         memcpy_fromio(to, win_base + from, len);
 278 }
 279
 280
 281 static void pcmcia_write8(struct map_info *map, u8 d, unsigned long adr)
 282 {
 283         caddr_t win_base = (caddr_t)map->map_priv_2;
 284
 285         if(DEV_REMOVED(map))
 286                 return;
 287
 288         DEBUG(3, "adr = 0x%08lx (%p)  data = 0x%02x", adr, win_base + adr, d);
 289         writeb(d, win_base + adr);
 290 }
 291
 292
 293 static void pcmcia_write16(struct map_info *map, u16 d, unsigned long adr)
 294 {
 295         caddr_t win_base = (caddr_t)map->map_priv_2;
 296
 297         if(DEV_REMOVED(map))
 298                 return;
 299
 300         DEBUG(3, "adr = 0x%08lx (%p)  data = 0x%04x", adr, win_base + adr, d);
 301         writew(d, win_base + adr);
 302 }
 303
 304
 305 static void pcmcia_copy_to(struct map_info *map, unsigned long to, const void *from, ssize_t len)
 306 {
 307         caddr_t win_base = (caddr_t)map->map_priv_2;
 308
 309         if(DEV_REMOVED(map))
 310                 return;
 311
 312         DEBUG(3, "to = %lu from = %p len = %u", to, from, len);
 313         memcpy_toio(win_base + to, from, len);
 314 }
 315
 316
 317 static void pcmciamtd_set_vpp(struct map_info *map, int on)
 318 {
 319         struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1;
 320         struct pcmcia_device *link = dev->p_dev;
 321         modconf_t mod;
 322         int ret;
 323
 324         mod.Attributes = CONF_VPP1_CHANGE_VALID | CONF_VPP2_CHANGE_VALID;
 325         mod.Vcc = 0;
 326         mod.Vpp1 = mod.Vpp2 = on ? dev->vpp : 0;
 327
 328         DEBUG(2, "dev = %p on = %d vpp = %d\n", dev, on, dev->vpp);
 329         ret = pcmcia_modify_configuration(link, &mod);
 330         if (ret != 0)
 331                 cs_error(link, ModifyConfiguration, ret);
 332 }
 333
 334
 335 /* After a card is removed, pcmciamtd_release() will unregister the
 336  * device, and release the PCMCIA configuration.  If the device is
 337  * still open, this will be postponed until it is closed.
 338  */
 339
 340 static void pcmciamtd_release(struct pcmcia_device *link)
 341 {
 342         struct pcmciamtd_dev *dev = link->priv;
 343
 344         DEBUG(3, "link = 0x%p", link);
 345
 346         if (link->win) {
 347                 if(dev->win_base) {
 348                         iounmap(dev->win_base);
 349                         dev->win_base = NULL;
 350                 }
 351                 pcmcia_release_window(link->win);
 352         }
 353         pcmcia_disable_device(link);
 354 }
 355
 356
 357 static void card_settings(struct pcmciamtd_dev *dev, struct pcmcia_device *link, int *new_name)
 358 {
 359         int rc;
 360         tuple_t tuple;
 361         cisparse_t parse;
 362         u_char buf[64];
 363
 364         tuple.Attributes = 0;
 365         tuple.TupleData = (cisdata_t *)buf;
 366         tuple.TupleDataMax = sizeof(buf);
 367         tuple.TupleOffset = 0;
 368         tuple.DesiredTuple = RETURN_FIRST_TUPLE;
 369
 370         rc = pcmcia_get_first_tuple(link, &tuple);
 371         while (rc == 0) {
 372                 rc = pcmcia_get_tuple_data(link, &tuple);
 373                 if (rc != 0) {
 374                         cs_error(link, GetTupleData, rc);
 375                         break;
 376                 }
 377                 rc = pcmcia_parse_tuple(&tuple, &parse);
 378                 if (rc != 0) {
 379                         cs_error(link, ParseTuple, rc);
 380                         break;
 381                 }
 382
 383                 switch(tuple.TupleCode) {
 384                 case  CISTPL_FORMAT: {
 385                         cistpl_format_t *t = &parse.format;
 386                         (void)t; /* Shut up, gcc */
 387                         DEBUG(2, "Format type: %u, Error Detection: %u, offset = %u, length =%u",
 388                               t->type, t->edc, t->offset, t->length);
 389                         break;
 390
 391                 }
 392
 393                 case CISTPL_DEVICE: {
 394                         cistpl_device_t *t = &parse.device;
 395                         int i;
 396                         DEBUG(2, "Common memory:");
 397                         dev->pcmcia_map.size = t->dev[0].size;
 398                         for(i = 0; i < t->ndev; i++) {
 399                                 DEBUG(2, "Region %d, type = %u", i, t->dev[i].type);
 400                                 DEBUG(2, "Region %d, wp = %u", i, t->dev[i].wp);
 401                                 DEBUG(2, "Region %d, speed = %u ns", i, t->dev[i].speed);
 402                                 DEBUG(2, "Region %d, size = %u bytes", i, t->dev[i].size);
 403                         }
 404                         break;
 405                 }
 406
 407                 case CISTPL_VERS_1: {
 408                         cistpl_vers_1_t *t = &parse.version_1;
 409                         int i;
 410                         if(t->ns) {
 411                                 dev->mtd_name[0] = '\0';
 412                                 for(i = 0; i < t->ns; i++) {
 413                                         if(i)
 414                                                 strcat(dev->mtd_name, " ");
 415                                         strcat(dev->mtd_name, t->str+t->ofs[i]);
 416                                 }
 417                         }
 418                         DEBUG(2, "Found name: %s", dev->mtd_name);
 419                         break;
 420                 }
 421
 422                 case CISTPL_JEDEC_C: {
 423                         cistpl_jedec_t *t = &parse.jedec;
 424                         int i;
 425                         for(i = 0; i < t->nid; i++) {
 426                                 DEBUG(2, "JEDEC: 0x%02x 0x%02x", t->id[i].mfr, t->id[i].info);
 427                         }
 428                         break;
 429                 }
 430
 431                 case CISTPL_DEVICE_GEO: {
 432                         cistpl_device_geo_t *t = &parse.device_geo;
 433                         int i;
 434                         dev->pcmcia_map.bankwidth = t->geo[0].buswidth;
 435                         for(i = 0; i < t->ngeo; i++) {
 436                                 DEBUG(2, "region: %d bankwidth = %u", i, t->geo[i].buswidth);
 437                                 DEBUG(2, "region: %d erase_block = %u", i, t->geo[i].erase_block);
 438                                 DEBUG(2, "region: %d read_block = %u", i, t->geo[i].read_block);
 439                                 DEBUG(2, "region: %d write_block = %u", i, t->geo[i].write_block);
 440                                 DEBUG(2, "region: %d partition = %u", i, t->geo[i].partition);
 441                                 DEBUG(2, "region: %d interleave = %u", i, t->geo[i].interleave);
 442                         }
 443                         break;
 444                 }
 445
 446                 default:
 447                         DEBUG(2, "Unknown tuple code %d", tuple.TupleCode);
 448                 }
 449
 450                 rc = pcmcia_get_next_tuple(link, &tuple);
 451         }
 452         if(!dev->pcmcia_map.size)
 453                 dev->pcmcia_map.size = MAX_PCMCIA_ADDR;
 454
 455         if(!dev->pcmcia_map.bankwidth)
 456                 dev->pcmcia_map.bankwidth = 2;
 457
 458         if(force_size) {
 459                 dev->pcmcia_map.size = force_size << 20;
 460                 DEBUG(2, "size forced to %dM", force_size);
 461         }
 462
 463         if(bankwidth) {
 464                 dev->pcmcia_map.bankwidth = bankwidth;
 465                 DEBUG(2, "bankwidth forced to %d", bankwidth);
 466         }
 467
 468         dev->pcmcia_map.name = dev->mtd_name;
 469         if(!dev->mtd_name[0]) {
 470                 strcpy(dev->mtd_name, "PCMCIA Memory card");
 471                 *new_name = 1;
 472         }
 473
 474         DEBUG(1, "Device: Size: %lu Width:%d Name: %s",
 475               dev->pcmcia_map.size, 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 #define CS_CHECK(fn, ret) \
 485 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
 486
 487 static int pcmciamtd_config(struct pcmcia_device *link)
 488 {
 489         struct pcmciamtd_dev *dev = link->priv;
 490         struct mtd_info *mtd = NULL;
 491         cs_status_t status;
 492         win_req_t req;
 493         int last_ret = 0, last_fn = 0;
 494         int ret;
 495         int i;
 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 upto the maximum
 517            that PCMCIA can support (64MiB) - this is ideal and we aim for a window the size of the
 518            whole card - otherwise we try smaller windows until we succeed */
 519
 520         req.Attributes =  WIN_MEMORY_TYPE_CM | WIN_ENABLE;
 521         req.Attributes |= (dev->pcmcia_map.bankwidth == 1) ? WIN_DATA_WIDTH_8 : WIN_DATA_WIDTH_16;
 522         req.Base = 0;
 523         req.AccessSpeed = mem_speed;
 524         link->win = (window_handle_t)link;
 525         req.Size = (force_size) ? force_size << 20 : MAX_PCMCIA_ADDR;
 526         dev->win_size = 0;
 527
 528         do {
 529                 int ret;
 530                 DEBUG(2, "requesting window with size = %dKiB memspeed = %d",
 531                       req.Size >> 10, req.AccessSpeed);
 532                 ret = pcmcia_request_window(&link, &req, &link->win);
 533                 DEBUG(2, "ret = %d dev->win_size = %d", ret, dev->win_size);
 534                 if(ret) {
 535                         req.Size >>= 1;
 536                 } else {
 537                         DEBUG(2, "Got window of size %dKiB", req.Size >> 10);
 538                         dev->win_size = req.Size;
 539                         break;
 540                 }
 541         } while(req.Size >= 0x1000);
 542
 543         DEBUG(2, "dev->win_size = %d", dev->win_size);
 544
 545         if(!dev->win_size) {
 546                 err("Cant allocate memory window");
 547                 pcmciamtd_release(link);
 548                 return -ENODEV;
 549         }
 550         DEBUG(1, "Allocated a window of %dKiB", dev->win_size >> 10);
 551
 552         /* Get write protect status */
 553         DEBUG(2, "window handle = 0x%8.8lx", (unsigned long)link->win);
 554         dev->win_base = ioremap(req.Base, req.Size);
 555         if(!dev->win_base) {
 556                 err("ioremap(%lu, %u) failed", req.Base, req.Size);
 557                 pcmciamtd_release(link);
 558                 return -ENODEV;
 559         }
 560         DEBUG(1, "mapped window dev = %p req.base = 0x%lx base = %p size = 0x%x",
 561               dev, req.Base, dev->win_base, req.Size);
 562
 563         dev->offset = 0;
 564         dev->pcmcia_map.map_priv_1 = (unsigned long)dev;
 565         dev->pcmcia_map.map_priv_2 = (unsigned long)link->win;
 566
 567         dev->vpp = (vpp) ? vpp : link->socket.socket.Vpp;
 568         link->conf.Attributes = 0;
 569         if(setvpp == 2) {
 570                 link->conf.Vpp = dev->vpp;
 571         } else {
 572                 link->conf.Vpp = 0;
 573         }
 574
 575         link->conf.IntType = INT_MEMORY;
 576         link->conf.ConfigIndex = 0;
 577         DEBUG(2, "Setting Configuration");
 578         ret = pcmcia_request_configuration(link, &link->conf);
 579         if (ret != 0) {
 580                 cs_error(link, RequestConfiguration, ret);
 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  cs_failed:
 656         cs_error(link, last_fn, last_ret);
 657         err("CS Error, exiting");
 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                 map_destroy(dev->mtd_info);
 697                 info("mtd%d: Removed", dev->mtd_info->index);
 698         }
 699
 700         pcmciamtd_release(link);
 701 }
 702
 703
 704 /* pcmciamtd_attach() creates an "instance" of the driver, allocating
 705  * local data structures for one device.  The device is registered
 706  * with Card Services.
 707  */
 708
 709 static int pcmciamtd_probe(struct pcmcia_device *link)
 710 {
 711         struct pcmciamtd_dev *dev;
 712
 713         /* Create new memory card device */
 714         dev = kzalloc(sizeof(*dev), GFP_KERNEL);
 715         if (!dev) return -ENOMEM;
 716         DEBUG(1, "dev=0x%p", dev);
 717
 718         dev->p_dev = link;
 719         link->priv = dev;
 720
 721         link->conf.Attributes = 0;
 722         link->conf.IntType = INT_MEMORY;
 723
 724         return pcmciamtd_config(link);
 725 }
 726
 727 static struct pcmcia_device_id pcmciamtd_ids[] = {
 728         PCMCIA_DEVICE_FUNC_ID(1),
 729         PCMCIA_DEVICE_PROD_ID123("IO DATA", "PCS-2M", "2MB SRAM", 0x547e66dc, 0x1fed36cd, 0x36eadd21),
 730         PCMCIA_DEVICE_PROD_ID12("IBM", "2MB SRAM", 0xb569a6e5, 0x36eadd21),
 731         PCMCIA_DEVICE_PROD_ID12("IBM", "4MB FLASH", 0xb569a6e5, 0x8bc54d2a),
 732         PCMCIA_DEVICE_PROD_ID12("IBM", "8MB FLASH", 0xb569a6e5, 0x6df1be3e),
 733         PCMCIA_DEVICE_PROD_ID12("Intel", "S2E20SW", 0x816cc815, 0xd14c9dcf),
 734         PCMCIA_DEVICE_PROD_ID12("Intel", "S2E8 SW", 0x816cc815, 0xa2d7dedb),
 735         PCMCIA_DEVICE_PROD_ID12("intel", "SERIES2-02 ", 0x40ade711, 0x145cea5c),
 736         PCMCIA_DEVICE_PROD_ID12("intel", "SERIES2-04 ", 0x40ade711, 0x42064dda),
 737         PCMCIA_DEVICE_PROD_ID12("intel", "SERIES2-20 ", 0x40ade711, 0x25ee5cb0),
 738         PCMCIA_DEVICE_PROD_ID12("intel", "VALUE SERIES 100 ", 0x40ade711, 0xdf8506d8),
 739         PCMCIA_DEVICE_PROD_ID12("KINGMAX TECHNOLOGY INC.", "SRAM 256K Bytes", 0x54d0c69c, 0xad12c29c),
 740         PCMCIA_DEVICE_PROD_ID12("Maxtor", "MAXFL MobileMax Flash Memory Card", 0xb68968c8, 0x2dfb47b0),
 741         PCMCIA_DEVICE_PROD_ID12("SEIKO EPSON", "WWB101EN20", 0xf9876baf, 0xad0b207b),
 742         PCMCIA_DEVICE_PROD_ID12("SEIKO EPSON", "WWB513EN20", 0xf9876baf, 0xe8d884ad),
 743         PCMCIA_DEVICE_PROD_ID12("Starfish, Inc.", "REX-3000", 0x05ddca47, 0xe7d67bca),
 744         PCMCIA_DEVICE_PROD_ID12("Starfish, Inc.", "REX-4100", 0x05ddca47, 0x7bc32944),
 745         /* the following was commented out in pcmcia-cs-3.2.7 */
 746         /* PCMCIA_DEVICE_PROD_ID12("RATOC Systems,Inc.", "SmartMedia ADAPTER PC Card", 0xf4a2fefe, 0x5885b2ae), */
 747 #ifdef CONFIG_MTD_PCMCIA_ANONYMOUS
 748         { .match_flags = PCMCIA_DEV_ID_MATCH_ANONYMOUS, },
 749 #endif
 750         PCMCIA_DEVICE_NULL
 751 };
 752 MODULE_DEVICE_TABLE(pcmcia, pcmciamtd_ids);
 753
 754 static struct pcmcia_driver pcmciamtd_driver = {
 755         .drv            = {
 756                 .name   = "pcmciamtd"
 757         },
 758         .probe          = pcmciamtd_probe,
 759         .remove         = pcmciamtd_detach,
 760         .owner          = THIS_MODULE,
 761         .id_table       = pcmciamtd_ids,
 762         .suspend        = pcmciamtd_suspend,
 763         .resume         = pcmciamtd_resume,
 764 };
 765
 766
 767 static int __init init_pcmciamtd(void)
 768 {
 769         info(DRIVER_DESC);
 770
 771         if(bankwidth && bankwidth != 1 && bankwidth != 2) {
 772                 info("bad bankwidth (%d), using default", bankwidth);
 773                 bankwidth = 2;
 774         }
 775         if(force_size && (force_size < 1 || force_size > 64)) {
 776                 info("bad force_size (%d), using default", force_size);
 777                 force_size = 0;
 778         }
 779         if(mem_type && mem_type != 1 && mem_type != 2) {
 780                 info("bad mem_type (%d), using default", mem_type);
 781                 mem_type = 0;
 782         }
 783         return pcmcia_register_driver(&pcmciamtd_driver);
 784 }
 785
 786
 787 static void __exit exit_pcmciamtd(void)
 788 {
 789         DEBUG(1, DRIVER_DESC " unloading");
 790         pcmcia_unregister_driver(&pcmciamtd_driver);
 791 }
 792
 793 module_init(init_pcmciamtd);
 794 module_exit(exit_pcmciamtd);