drivers/mtd/maps/pcmciamtd.c

   1 /*
   2  * $Id: pcmciamtd.c,v 1.55 2005/11/07 11:14:28 gleixner Exp $
   3  *
   4  * pcmciamtd.c - MTD driver for PCMCIA flash memory cards
   5  *
   6  * Author: Simon Evans <spse@secret.org.uk>
   7  *
   8  * Copyright (C) 2002 Simon Evans
   9  *
  10  * Licence: GPL
  11  *
  12  */
  13
  14 #include <linux/module.h>
  15 #include <linux/slab.h>
  16 #include <linux/timer.h>
  17 #include <linux/init.h>
  18 #include <asm/io.h>
  19 #include <asm/system.h>
  20
  21 #include <pcmcia/cs_types.h>
  22 #include <pcmcia/cs.h>
  23 #include <pcmcia/cistpl.h>
  24 #include <pcmcia/ds.h>
  25
  26 #include <linux/mtd/map.h>
  27 #include <linux/mtd/mtd.h>
  28
  29 #ifdef CONFIG_MTD_DEBUG
  30 static int debug = CONFIG_MTD_DEBUG_VERBOSE;
  31 MODULE_PARM(debug, "i");
  32 MODULE_PARM_DESC(debug, "Set Debug Level 0=quiet, 5=noisy");
  33 #undef DEBUG
  34 #define DEBUG(n, format, arg...) \
  35         if (n <= debug) {        \
  36                 printk(KERN_DEBUG __FILE__ ":%s(): " format "\n", __FUNCTION__ , ## arg); \
  37         }
  38
  39 #else
  40 #undef DEBUG
  41 #define DEBUG(n, arg...)
  42 static const int debug = 0;
  43 #endif
  44
  45 #define err(format, arg...) printk(KERN_ERR "pcmciamtd: " format "\n" , ## arg)
  46 #define info(format, arg...) printk(KERN_INFO "pcmciamtd: " format "\n" , ## arg)
  47 #define warn(format, arg...) printk(KERN_WARNING "pcmciamtd: " format "\n" , ## arg)
  48
  49
  50 #define DRIVER_DESC     "PCMCIA Flash memory card driver"
  51 #define DRIVER_VERSION  "$Revision: 1.55 $"
  52
  53 /* Size of the PCMCIA address space: 26 bits = 64 MB */
  54 #define MAX_PCMCIA_ADDR 0x4000000
  55
  56 struct pcmciamtd_dev {
  57         dev_link_t      link;           /* PCMCIA link */
  58         dev_node_t      node;           /* device node */
  59         caddr_t         win_base;       /* ioremapped address of PCMCIA window */
  60         unsigned int    win_size;       /* size of window */
  61         unsigned int    offset;         /* offset into card the window currently points at */
  62         struct map_info pcmcia_map;
  63         struct mtd_info *mtd_info;
  64         int             vpp;
  65         char            mtd_name[sizeof(struct cistpl_vers_1_t)];
  66 };
  67
  68
  69 static dev_info_t dev_info = "pcmciamtd";
  70 static dev_link_t *dev_list;
  71
  72 /* Module parameters */
  73
  74 /* 2 = do 16-bit transfers, 1 = do 8-bit transfers */
  75 static int bankwidth = 2;
  76
  77 /* Speed of memory accesses, in ns */
  78 static int mem_speed;
  79
  80 /* Force the size of an SRAM card */
  81 static int force_size;
  82
  83 /* Force Vpp */
  84 static int vpp;
  85
  86 /* Set Vpp */
  87 static int setvpp;
  88
  89 /* Force card to be treated as FLASH, ROM or RAM */
  90 static int mem_type;
  91
  92 MODULE_LICENSE("GPL");
  93 MODULE_AUTHOR("Simon Evans <spse@secret.org.uk>");
  94 MODULE_DESCRIPTION(DRIVER_DESC);
  95 MODULE_PARM(bankwidth, "i");
  96 MODULE_PARM_DESC(bankwidth, "Set bankwidth (1=8 bit, 2=16 bit, default=2)");
  97 MODULE_PARM(mem_speed, "i");
  98 MODULE_PARM_DESC(mem_speed, "Set memory access speed in ns");
  99 MODULE_PARM(force_size, "i");
 100 MODULE_PARM_DESC(force_size, "Force size of card in MiB (1-64)");
 101 MODULE_PARM(setvpp, "i");
 102 MODULE_PARM_DESC(setvpp, "Set Vpp (0=Never, 1=On writes, 2=Always on, default=0)");
 103 MODULE_PARM(vpp, "i");
 104 MODULE_PARM_DESC(vpp, "Vpp value in 1/10ths eg 33=3.3V 120=12V (Dangerous)");
 105 MODULE_PARM(mem_type, "i");
 106 MODULE_PARM_DESC(mem_type, "Set Memory type (0=Flash, 1=RAM, 2=ROM, default=0)");
 107
 108
 109 /* read/write{8,16} copy_{from,to} routines with window remapping to access whole card */
 110 static caddr_t remap_window(struct map_info *map, unsigned long to)
 111 {
 112         struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1;
 113         window_handle_t win = (window_handle_t)map->map_priv_2;
 114         memreq_t mrq;
 115         int ret;
 116
 117         if(!(dev->link.state & DEV_PRESENT)) {
 118                 DEBUG(1, "device removed state = 0x%4.4X", dev->link.state);
 119                 return 0;
 120         }
 121
 122         mrq.CardOffset = to & ~(dev->win_size-1);
 123         if(mrq.CardOffset != dev->offset) {
 124                 DEBUG(2, "Remapping window from 0x%8.8x to 0x%8.8x",
 125                       dev->offset, mrq.CardOffset);
 126                 mrq.Page = 0;
 127                 if( (ret = pcmcia_map_mem_page(win, &mrq)) != CS_SUCCESS) {
 128                         cs_error(dev->link.handle, MapMemPage, ret);
 129                         return NULL;
 130                 }
 131                 dev->offset = mrq.CardOffset;
 132         }
 133         return dev->win_base + (to & (dev->win_size-1));
 134 }
 135
 136
 137 static map_word pcmcia_read8_remap(struct map_info *map, unsigned long ofs)
 138 {
 139         caddr_t addr;
 140         map_word d = {{0}};
 141
 142         addr = remap_window(map, ofs);
 143         if(!addr)
 144                 return d;
 145
 146         d.x[0] = readb(addr);
 147         DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%02x", ofs, addr, d.x[0]);
 148         return d;
 149 }
 150
 151
 152 static map_word pcmcia_read16_remap(struct map_info *map, unsigned long ofs)
 153 {
 154         caddr_t addr;
 155         map_word d = {{0}};
 156
 157         addr = remap_window(map, ofs);
 158         if(!addr)
 159                 return d;
 160
 161         d.x[0] = readw(addr);
 162         DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%04x", ofs, addr, d.x[0]);
 163         return d;
 164 }
 165
 166
 167 static void pcmcia_copy_from_remap(struct map_info *map, void *to, unsigned long from, ssize_t len)
 168 {
 169         struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1;
 170         unsigned long win_size = dev->win_size;
 171
 172         DEBUG(3, "to = %p from = %lu len = %u", to, from, len);
 173         while(len) {
 174                 int toread = win_size - (from & (win_size-1));
 175                 caddr_t addr;
 176
 177                 if(toread > len)
 178                         toread = len;
 179
 180                 addr = remap_window(map, from);
 181                 if(!addr)
 182                         return;
 183
 184                 DEBUG(4, "memcpy from %p to %p len = %d", addr, to, toread);
 185                 memcpy_fromio(to, addr, toread);
 186                 len -= toread;
 187                 to += toread;
 188                 from += toread;
 189         }
 190 }
 191
 192
 193 static void pcmcia_write8_remap(struct map_info *map, map_word d, unsigned long adr)
 194 {
 195         caddr_t addr = remap_window(map, adr);
 196
 197         if(!addr)
 198                 return;
 199
 200         DEBUG(3, "adr = 0x%08lx (%p)  data = 0x%02x", adr, addr, d.x[0]);
 201         writeb(d.x[0], addr);
 202 }
 203
 204
 205 static void pcmcia_write16_remap(struct map_info *map, map_word d, unsigned long adr)
 206 {
 207         caddr_t addr = remap_window(map, adr);
 208         if(!addr)
 209                 return;
 210
 211         DEBUG(3, "adr = 0x%08lx (%p)  data = 0x%04x", adr, addr, d.x[0]);
 212         writew(d.x[0], addr);
 213 }
 214
 215
 216 static void pcmcia_copy_to_remap(struct map_info *map, unsigned long to, const void *from, ssize_t len)
 217 {
 218         struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1;
 219         unsigned long win_size = dev->win_size;
 220
 221         DEBUG(3, "to = %lu from = %p len = %u", to, from, len);
 222         while(len) {
 223                 int towrite = win_size - (to & (win_size-1));
 224                 caddr_t addr;
 225
 226                 if(towrite > len)
 227                         towrite = len;
 228
 229                 addr = remap_window(map, to);
 230                 if(!addr)
 231                         return;
 232
 233                 DEBUG(4, "memcpy from %p to %p len = %d", from, addr, towrite);
 234                 memcpy_toio(addr, from, towrite);
 235                 len -= towrite;
 236                 to += towrite;
 237                 from += towrite;
 238         }
 239 }
 240
 241
 242 /* read/write{8,16} copy_{from,to} routines with direct access */
 243
 244 #define DEV_REMOVED(x)  (!(*(u_int *)x->map_priv_1 & DEV_PRESENT))
 245
 246 static map_word pcmcia_read8(struct map_info *map, unsigned long ofs)
 247 {
 248         caddr_t win_base = (caddr_t)map->map_priv_2;
 249         map_word d = {{0}};
 250
 251         if(DEV_REMOVED(map))
 252                 return d;
 253
 254         d.x[0] = readb(win_base + ofs);
 255         DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%02x", ofs, win_base + ofs, d.x[0]);
 256         return d;
 257 }
 258
 259
 260 static map_word pcmcia_read16(struct map_info *map, unsigned long ofs)
 261 {
 262         caddr_t win_base = (caddr_t)map->map_priv_2;
 263         map_word d = {{0}};
 264
 265         if(DEV_REMOVED(map))
 266                 return d;
 267
 268         d.x[0] = readw(win_base + ofs);
 269         DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%04x", ofs, win_base + ofs, d.x[0]);
 270         return d;
 271 }
 272
 273
 274 static void pcmcia_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len)
 275 {
 276         caddr_t win_base = (caddr_t)map->map_priv_2;
 277
 278         if(DEV_REMOVED(map))
 279                 return;
 280
 281         DEBUG(3, "to = %p from = %lu len = %u", to, from, len);
 282         memcpy_fromio(to, win_base + from, len);
 283 }
 284
 285
 286 static void pcmcia_write8(struct map_info *map, u8 d, unsigned long adr)
 287 {
 288         caddr_t win_base = (caddr_t)map->map_priv_2;
 289
 290         if(DEV_REMOVED(map))
 291                 return;
 292
 293         DEBUG(3, "adr = 0x%08lx (%p)  data = 0x%02x", adr, win_base + adr, d);
 294         writeb(d, win_base + adr);
 295 }
 296
 297
 298 static void pcmcia_write16(struct map_info *map, u16 d, unsigned long adr)
 299 {
 300         caddr_t win_base = (caddr_t)map->map_priv_2;
 301
 302         if(DEV_REMOVED(map))
 303                 return;
 304
 305         DEBUG(3, "adr = 0x%08lx (%p)  data = 0x%04x", adr, win_base + adr, d);
 306         writew(d, win_base + adr);
 307 }
 308
 309
 310 static void pcmcia_copy_to(struct map_info *map, unsigned long to, const void *from, ssize_t len)
 311 {
 312         caddr_t win_base = (caddr_t)map->map_priv_2;
 313
 314         if(DEV_REMOVED(map))
 315                 return;
 316
 317         DEBUG(3, "to = %lu from = %p len = %u", to, from, len);
 318         memcpy_toio(win_base + to, from, len);
 319 }
 320
 321
 322 static void pcmciamtd_set_vpp(struct map_info *map, int on)
 323 {
 324         struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1;
 325         dev_link_t *link = &dev->link;
 326         modconf_t mod;
 327         int ret;
 328
 329         mod.Attributes = CONF_VPP1_CHANGE_VALID | CONF_VPP2_CHANGE_VALID;
 330         mod.Vcc = 0;
 331         mod.Vpp1 = mod.Vpp2 = on ? dev->vpp : 0;
 332
 333         DEBUG(2, "dev = %p on = %d vpp = %d\n", dev, on, dev->vpp);
 334         ret = pcmcia_modify_configuration(link->handle, &mod);
 335         if(ret != CS_SUCCESS) {
 336                 cs_error(link->handle, ModifyConfiguration, ret);
 337         }
 338 }
 339
 340
 341 /* After a card is removed, pcmciamtd_release() will unregister the
 342  * device, and release the PCMCIA configuration.  If the device is
 343  * still open, this will be postponed until it is closed.
 344  */
 345
 346 static void pcmciamtd_release(dev_link_t *link)
 347 {
 348         struct pcmciamtd_dev *dev = link->priv;
 349
 350         DEBUG(3, "link = 0x%p", link);
 351
 352         if (link->win) {
 353                 if(dev->win_base) {
 354                         iounmap(dev->win_base);
 355                         dev->win_base = NULL;
 356                 }
 357                 pcmcia_release_window(link->win);
 358         }
 359         pcmcia_release_configuration(link->handle);
 360         link->state &= ~DEV_CONFIG;
 361 }
 362
 363
 364 static void card_settings(struct pcmciamtd_dev *dev, dev_link_t *link, int *new_name)
 365 {
 366         int rc;
 367         tuple_t tuple;
 368         cisparse_t parse;
 369         u_char buf[64];
 370
 371         tuple.Attributes = 0;
 372         tuple.TupleData = (cisdata_t *)buf;
 373         tuple.TupleDataMax = sizeof(buf);
 374         tuple.TupleOffset = 0;
 375         tuple.DesiredTuple = RETURN_FIRST_TUPLE;
 376
 377         rc = pcmcia_get_first_tuple(link->handle, &tuple);
 378         while(rc == CS_SUCCESS) {
 379                 rc = pcmcia_get_tuple_data(link->handle, &tuple);
 380                 if(rc != CS_SUCCESS) {
 381                         cs_error(link->handle, GetTupleData, rc);
 382                         break;
 383                 }
 384                 rc = pcmcia_parse_tuple(link->handle, &tuple, &parse);
 385                 if(rc != CS_SUCCESS) {
 386                         cs_error(link->handle, ParseTuple, rc);
 387                         break;
 388                 }
 389
 390                 switch(tuple.TupleCode) {
 391                 case  CISTPL_FORMAT: {
 392                         cistpl_format_t *t = &parse.format;
 393                         (void)t; /* Shut up, gcc */
 394                         DEBUG(2, "Format type: %u, Error Detection: %u, offset = %u, length =%u",
 395                               t->type, t->edc, t->offset, t->length);
 396                         break;
 397
 398                 }
 399
 400                 case CISTPL_DEVICE: {
 401                         cistpl_device_t *t = &parse.device;
 402                         int i;
 403                         DEBUG(2, "Common memory:");
 404                         dev->pcmcia_map.size = t->dev[0].size;
 405                         for(i = 0; i < t->ndev; i++) {
 406                                 DEBUG(2, "Region %d, type = %u", i, t->dev[i].type);
 407                                 DEBUG(2, "Region %d, wp = %u", i, t->dev[i].wp);
 408                                 DEBUG(2, "Region %d, speed = %u ns", i, t->dev[i].speed);
 409                                 DEBUG(2, "Region %d, size = %u bytes", i, t->dev[i].size);
 410                         }
 411                         break;
 412                 }
 413
 414                 case CISTPL_VERS_1: {
 415                         cistpl_vers_1_t *t = &parse.version_1;
 416                         int i;
 417                         if(t->ns) {
 418                                 dev->mtd_name[0] = '\0';
 419                                 for(i = 0; i < t->ns; i++) {
 420                                         if(i)
 421                                                 strcat(dev->mtd_name, " ");
 422                                         strcat(dev->mtd_name, t->str+t->ofs[i]);
 423                                 }
 424                         }
 425                         DEBUG(2, "Found name: %s", dev->mtd_name);
 426                         break;
 427                 }
 428
 429                 case CISTPL_JEDEC_C: {
 430                         cistpl_jedec_t *t = &parse.jedec;
 431                         int i;
 432                         for(i = 0; i < t->nid; i++) {
 433                                 DEBUG(2, "JEDEC: 0x%02x 0x%02x", t->id[i].mfr, t->id[i].info);
 434                         }
 435                         break;
 436                 }
 437
 438                 case CISTPL_DEVICE_GEO: {
 439                         cistpl_device_geo_t *t = &parse.device_geo;
 440                         int i;
 441                         dev->pcmcia_map.bankwidth = t->geo[0].buswidth;
 442                         for(i = 0; i < t->ngeo; i++) {
 443                                 DEBUG(2, "region: %d bankwidth = %u", i, t->geo[i].buswidth);
 444                                 DEBUG(2, "region: %d erase_block = %u", i, t->geo[i].erase_block);
 445                                 DEBUG(2, "region: %d read_block = %u", i, t->geo[i].read_block);
 446                                 DEBUG(2, "region: %d write_block = %u", i, t->geo[i].write_block);
 447                                 DEBUG(2, "region: %d partition = %u", i, t->geo[i].partition);
 448                                 DEBUG(2, "region: %d interleave = %u", i, t->geo[i].interleave);
 449                         }
 450                         break;
 451                 }
 452
 453                 default:
 454                         DEBUG(2, "Unknown tuple code %d", tuple.TupleCode);
 455                 }
 456
 457                 rc = pcmcia_get_next_tuple(link->handle, &tuple);
 458         }
 459         if(!dev->pcmcia_map.size)
 460                 dev->pcmcia_map.size = MAX_PCMCIA_ADDR;
 461
 462         if(!dev->pcmcia_map.bankwidth)
 463                 dev->pcmcia_map.bankwidth = 2;
 464
 465         if(force_size) {
 466                 dev->pcmcia_map.size = force_size << 20;
 467                 DEBUG(2, "size forced to %dM", force_size);
 468         }
 469
 470         if(bankwidth) {
 471                 dev->pcmcia_map.bankwidth = bankwidth;
 472                 DEBUG(2, "bankwidth forced to %d", bankwidth);
 473         }
 474
 475         dev->pcmcia_map.name = dev->mtd_name;
 476         if(!dev->mtd_name[0]) {
 477                 strcpy(dev->mtd_name, "PCMCIA Memory card");
 478                 *new_name = 1;
 479         }
 480
 481         DEBUG(1, "Device: Size: %lu Width:%d Name: %s",
 482               dev->pcmcia_map.size, dev->pcmcia_map.bankwidth << 3, dev->mtd_name);
 483 }
 484
 485
 486 /* pcmciamtd_config() is scheduled to run after a CARD_INSERTION event
 487  * is received, to configure the PCMCIA socket, and to make the
 488  * MTD device available to the system.
 489  */
 490
 491 #define CS_CHECK(fn, ret) \
 492 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
 493
 494 static void pcmciamtd_config(dev_link_t *link)
 495 {
 496         struct pcmciamtd_dev *dev = link->priv;
 497         struct mtd_info *mtd = NULL;
 498         cs_status_t status;
 499         win_req_t req;
 500         int last_ret = 0, last_fn = 0;
 501         int ret;
 502         int i;
 503         config_info_t t;
 504         static char *probes[] = { "jedec_probe", "cfi_probe" };
 505         cisinfo_t cisinfo;
 506         int new_name = 0;
 507
 508         DEBUG(3, "link=0x%p", link);
 509
 510         /* Configure card */
 511         link->state |= DEV_CONFIG;
 512
 513         DEBUG(2, "Validating CIS");
 514         ret = pcmcia_validate_cis(link->handle, &cisinfo);
 515         if(ret != CS_SUCCESS) {
 516                 cs_error(link->handle, GetTupleData, ret);
 517         } else {
 518                 DEBUG(2, "ValidateCIS found %d chains", cisinfo.Chains);
 519         }
 520
 521         card_settings(dev, link, &new_name);
 522
 523         dev->pcmcia_map.phys = NO_XIP;
 524         dev->pcmcia_map.copy_from = pcmcia_copy_from_remap;
 525         dev->pcmcia_map.copy_to = pcmcia_copy_to_remap;
 526         if (dev->pcmcia_map.bankwidth == 1) {
 527                 dev->pcmcia_map.read = pcmcia_read8_remap;
 528                 dev->pcmcia_map.write = pcmcia_write8_remap;
 529         } else {
 530                 dev->pcmcia_map.read = pcmcia_read16_remap;
 531                 dev->pcmcia_map.write = pcmcia_write16_remap;
 532         }
 533         if(setvpp == 1)
 534                 dev->pcmcia_map.set_vpp = pcmciamtd_set_vpp;
 535
 536         /* Request a memory window for PCMCIA. Some architeures can map windows upto the maximum
 537            that PCMCIA can support (64MiB) - this is ideal and we aim for a window the size of the
 538            whole card - otherwise we try smaller windows until we succeed */
 539
 540         req.Attributes =  WIN_MEMORY_TYPE_CM | WIN_ENABLE;
 541         req.Attributes |= (dev->pcmcia_map.bankwidth == 1) ? WIN_DATA_WIDTH_8 : WIN_DATA_WIDTH_16;
 542         req.Base = 0;
 543         req.AccessSpeed = mem_speed;
 544         link->win = (window_handle_t)link->handle;
 545         req.Size = (force_size) ? force_size << 20 : MAX_PCMCIA_ADDR;
 546         dev->win_size = 0;
 547
 548         do {
 549                 int ret;
 550                 DEBUG(2, "requesting window with size = %dKiB memspeed = %d",
 551                       req.Size >> 10, req.AccessSpeed);
 552                 ret = pcmcia_request_window(&link->handle, &req, &link->win);
 553                 DEBUG(2, "ret = %d dev->win_size = %d", ret, dev->win_size);
 554                 if(ret) {
 555                         req.Size >>= 1;
 556                 } else {
 557                         DEBUG(2, "Got window of size %dKiB", req.Size >> 10);
 558                         dev->win_size = req.Size;
 559                         break;
 560                 }
 561         } while(req.Size >= 0x1000);
 562
 563         DEBUG(2, "dev->win_size = %d", dev->win_size);
 564
 565         if(!dev->win_size) {
 566                 err("Cant allocate memory window");
 567                 pcmciamtd_release(link);
 568                 return;
 569         }
 570         DEBUG(1, "Allocated a window of %dKiB", dev->win_size >> 10);
 571
 572         /* Get write protect status */
 573         CS_CHECK(GetStatus, pcmcia_get_status(link->handle, &status));
 574         DEBUG(2, "status value: 0x%x window handle = 0x%8.8lx",
 575               status.CardState, (unsigned long)link->win);
 576         dev->win_base = ioremap(req.Base, req.Size);
 577         if(!dev->win_base) {
 578                 err("ioremap(%lu, %u) failed", req.Base, req.Size);
 579                 pcmciamtd_release(link);
 580                 return;
 581         }
 582         DEBUG(1, "mapped window dev = %p req.base = 0x%lx base = %p size = 0x%x",
 583               dev, req.Base, dev->win_base, req.Size);
 584
 585         dev->offset = 0;
 586         dev->pcmcia_map.map_priv_1 = (unsigned long)dev;
 587         dev->pcmcia_map.map_priv_2 = (unsigned long)link->win;
 588
 589         DEBUG(2, "Getting configuration");
 590         CS_CHECK(GetConfigurationInfo, pcmcia_get_configuration_info(link->handle, &t));
 591         DEBUG(2, "Vcc = %d Vpp1 = %d Vpp2 = %d", t.Vcc, t.Vpp1, t.Vpp2);
 592         dev->vpp = (vpp) ? vpp : t.Vpp1;
 593         link->conf.Attributes = 0;
 594         link->conf.Vcc = t.Vcc;
 595         if(setvpp == 2) {
 596                 link->conf.Vpp1 = dev->vpp;
 597                 link->conf.Vpp2 = dev->vpp;
 598         } else {
 599                 link->conf.Vpp1 = 0;
 600                 link->conf.Vpp2 = 0;
 601         }
 602
 603         link->conf.IntType = INT_MEMORY;
 604         link->conf.ConfigBase = t.ConfigBase;
 605         link->conf.Status = t.Status;
 606         link->conf.Pin = t.Pin;
 607         link->conf.Copy = t.Copy;
 608         link->conf.ExtStatus = t.ExtStatus;
 609         link->conf.ConfigIndex = 0;
 610         link->conf.Present = t.Present;
 611         DEBUG(2, "Setting Configuration");
 612         ret = pcmcia_request_configuration(link->handle, &link->conf);
 613         if(ret != CS_SUCCESS) {
 614                 cs_error(link->handle, RequestConfiguration, ret);
 615         }
 616
 617         if(mem_type == 1) {
 618                 mtd = do_map_probe("map_ram", &dev->pcmcia_map);
 619         } else if(mem_type == 2) {
 620                 mtd = do_map_probe("map_rom", &dev->pcmcia_map);
 621         } else {
 622                 for(i = 0; i < sizeof(probes) / sizeof(char *); i++) {
 623                         DEBUG(1, "Trying %s", probes[i]);
 624                         mtd = do_map_probe(probes[i], &dev->pcmcia_map);
 625                         if(mtd)
 626                                 break;
 627
 628                         DEBUG(1, "FAILED: %s", probes[i]);
 629                 }
 630         }
 631
 632         if(!mtd) {
 633                 DEBUG(1, "Cant find an MTD");
 634                 pcmciamtd_release(link);
 635                 return;
 636         }
 637
 638         dev->mtd_info = mtd;
 639         mtd->owner = THIS_MODULE;
 640
 641         if(new_name) {
 642                 int size = 0;
 643                 char unit = ' ';
 644                 /* Since we are using a default name, make it better by adding in the
 645                    size */
 646                 if(mtd->size < 1048576) { /* <1MiB in size, show size in KiB */
 647                         size = mtd->size >> 10;
 648                         unit = 'K';
 649                 } else {
 650                         size = mtd->size >> 20;
 651                         unit = 'M';
 652                 }
 653                 snprintf(dev->mtd_name, sizeof(dev->mtd_name), "%d%ciB %s", size, unit, "PCMCIA Memory card");
 654         }
 655
 656         /* If the memory found is fits completely into the mapped PCMCIA window,
 657            use the faster non-remapping read/write functions */
 658         if(mtd->size <= dev->win_size) {
 659                 DEBUG(1, "Using non remapping memory functions");
 660                 dev->pcmcia_map.map_priv_1 = (unsigned long)&(dev->link.state);
 661                 dev->pcmcia_map.map_priv_2 = (unsigned long)dev->win_base;
 662                 if (dev->pcmcia_map.bankwidth == 1) {
 663                         dev->pcmcia_map.read = pcmcia_read8;
 664                         dev->pcmcia_map.write = pcmcia_write8;
 665                 } else {
 666                         dev->pcmcia_map.read = pcmcia_read16;
 667                         dev->pcmcia_map.write = pcmcia_write16;
 668                 }
 669                 dev->pcmcia_map.copy_from = pcmcia_copy_from;
 670                 dev->pcmcia_map.copy_to = pcmcia_copy_to;
 671         }
 672
 673         if(add_mtd_device(mtd)) {
 674                 map_destroy(mtd);
 675                 dev->mtd_info = NULL;
 676                 err("Couldnt register MTD device");
 677                 pcmciamtd_release(link);
 678                 return;
 679         }
 680         snprintf(dev->node.dev_name, sizeof(dev->node.dev_name), "mtd%d", mtd->index);
 681         info("mtd%d: %s", mtd->index, mtd->name);
 682         link->state &= ~DEV_CONFIG_PENDING;
 683         link->dev = &dev->node;
 684         return;
 685
 686  cs_failed:
 687         cs_error(link->handle, last_fn, last_ret);
 688         err("CS Error, exiting");
 689         pcmciamtd_release(link);
 690         return;
 691 }
 692
 693
 694 /* The card status event handler.  Mostly, this schedules other
 695  * stuff to run after an event is received.  A CARD_REMOVAL event
 696  * also sets some flags to discourage the driver from trying
 697  * to talk to the card any more.
 698  */
 699
 700 static int pcmciamtd_event(event_t event, int priority,
 701                         event_callback_args_t *args)
 702 {
 703         dev_link_t *link = args->client_data;
 704
 705         DEBUG(1, "event=0x%06x", event);
 706         switch (event) {
 707         case CS_EVENT_CARD_REMOVAL:
 708                 DEBUG(2, "EVENT_CARD_REMOVAL");
 709                 link->state &= ~DEV_PRESENT;
 710                 if (link->state & DEV_CONFIG) {
 711                         struct pcmciamtd_dev *dev = link->priv;
 712                         if(dev->mtd_info) {
 713                                 del_mtd_device(dev->mtd_info);
 714                                 info("mtd%d: Removed", dev->mtd_info->index);
 715                         }
 716                         pcmciamtd_release(link);
 717                 }
 718                 break;
 719         case CS_EVENT_CARD_INSERTION:
 720                 DEBUG(2, "EVENT_CARD_INSERTION");
 721                 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
 722                 pcmciamtd_config(link);
 723                 break;
 724         case CS_EVENT_PM_SUSPEND:
 725                 DEBUG(2, "EVENT_PM_SUSPEND");
 726                 link->state |= DEV_SUSPEND;
 727                 /* Fall through... */
 728         case CS_EVENT_RESET_PHYSICAL:
 729                 DEBUG(2, "EVENT_RESET_PHYSICAL");
 730                 /* get_lock(link); */
 731                 break;
 732         case CS_EVENT_PM_RESUME:
 733                 DEBUG(2, "EVENT_PM_RESUME");
 734                 link->state &= ~DEV_SUSPEND;
 735                 /* Fall through... */
 736         case CS_EVENT_CARD_RESET:
 737                 DEBUG(2, "EVENT_CARD_RESET");
 738                 /* free_lock(link); */
 739                 break;
 740         default:
 741                 DEBUG(2, "Unknown event %d", event);
 742         }
 743         return 0;
 744 }
 745
 746
 747 /* This deletes a driver "instance".  The device is de-registered
 748  * with Card Services.  If it has been released, all local data
 749  * structures are freed.  Otherwise, the structures will be freed
 750  * when the device is released.
 751  */
 752
 753 static void pcmciamtd_detach(dev_link_t *link)
 754 {
 755         DEBUG(3, "link=0x%p", link);
 756
 757         if(link->state & DEV_CONFIG) {
 758                 pcmciamtd_release(link);
 759         }
 760
 761         if (link->handle) {
 762                 int ret;
 763                 DEBUG(2, "Deregistering with card services");
 764                 ret = pcmcia_deregister_client(link->handle);
 765                 if (ret != CS_SUCCESS)
 766                         cs_error(link->handle, DeregisterClient, ret);
 767         }
 768
 769         link->state |= DEV_STALE_LINK;
 770 }
 771
 772
 773 /* pcmciamtd_attach() creates an "instance" of the driver, allocating
 774  * local data structures for one device.  The device is registered
 775  * with Card Services.
 776  */
 777
 778 static dev_link_t *pcmciamtd_attach(void)
 779 {
 780         struct pcmciamtd_dev *dev;
 781         dev_link_t *link;
 782         client_reg_t client_reg;
 783         int ret;
 784
 785         /* Create new memory card device */
 786         dev = kmalloc(sizeof(*dev), GFP_KERNEL);
 787         if (!dev) return NULL;
 788         DEBUG(1, "dev=0x%p", dev);
 789
 790         memset(dev, 0, sizeof(*dev));
 791         link = &dev->link;
 792         link->priv = dev;
 793
 794         link->conf.Attributes = 0;
 795         link->conf.IntType = INT_MEMORY;
 796
 797         link->next = dev_list;
 798         dev_list = link;
 799
 800         /* Register with Card Services */
 801         client_reg.dev_info = &dev_info;
 802         client_reg.Version = 0x0210;
 803         client_reg.event_callback_args.client_data = link;
 804         DEBUG(2, "Calling RegisterClient");
 805         ret = pcmcia_register_client(&link->handle, &client_reg);
 806         if (ret != 0) {
 807                 cs_error(link->handle, RegisterClient, ret);
 808                 pcmciamtd_detach(link);
 809                 return NULL;
 810         }
 811         DEBUG(2, "link = %p", link);
 812         return link;
 813 }
 814
 815 static struct pcmcia_device_id pcmciamtd_ids[] = {
 816         PCMCIA_DEVICE_FUNC_ID(1),
 817         PCMCIA_DEVICE_PROD_ID123("IO DATA", "PCS-2M", "2MB SRAM", 0x547e66dc, 0x1fed36cd, 0x36eadd21),
 818         PCMCIA_DEVICE_PROD_ID12("IBM", "2MB SRAM", 0xb569a6e5, 0x36eadd21),
 819         PCMCIA_DEVICE_PROD_ID12("IBM", "4MB FLASH", 0xb569a6e5, 0x8bc54d2a),
 820         PCMCIA_DEVICE_PROD_ID12("IBM", "8MB FLASH", 0xb569a6e5, 0x6df1be3e),
 821         PCMCIA_DEVICE_PROD_ID12("Intel", "S2E20SW", 0x816cc815, 0xd14c9dcf),
 822         PCMCIA_DEVICE_PROD_ID12("Intel", "S2E8 SW", 0x816cc815, 0xa2d7dedb),
 823         PCMCIA_DEVICE_PROD_ID12("intel", "SERIES2-02 ", 0x40ade711, 0x145cea5c),
 824         PCMCIA_DEVICE_PROD_ID12("intel", "SERIES2-04 ", 0x40ade711, 0x42064dda),
 825         PCMCIA_DEVICE_PROD_ID12("intel", "SERIES2-20 ", 0x40ade711, 0x25ee5cb0),
 826         PCMCIA_DEVICE_PROD_ID12("intel", "VALUE SERIES 100 ", 0x40ade711, 0xdf8506d8),
 827         PCMCIA_DEVICE_PROD_ID12("KINGMAX TECHNOLOGY INC.", "SRAM 256K Bytes", 0x54d0c69c, 0xad12c29c),
 828         PCMCIA_DEVICE_PROD_ID12("Maxtor", "MAXFL MobileMax Flash Memory Card", 0xb68968c8, 0x2dfb47b0),
 829         PCMCIA_DEVICE_PROD_ID12("SEIKO EPSON", "WWB101EN20", 0xf9876baf, 0xad0b207b),
 830         PCMCIA_DEVICE_PROD_ID12("SEIKO EPSON", "WWB513EN20", 0xf9876baf, 0xe8d884ad),
 831         PCMCIA_DEVICE_PROD_ID12("Starfish, Inc.", "REX-3000", 0x05ddca47, 0xe7d67bca),
 832         PCMCIA_DEVICE_PROD_ID12("Starfish, Inc.", "REX-4100", 0x05ddca47, 0x7bc32944),
 833         /* the following was commented out in pcmcia-cs-3.2.7 */
 834         /* PCMCIA_DEVICE_PROD_ID12("RATOC Systems,Inc.", "SmartMedia ADAPTER PC Card", 0xf4a2fefe, 0x5885b2ae), */
 835 #ifdef CONFIG_MTD_PCMCIA_ANONYMOUS
 836         { .match_flags = PCMCIA_DEV_ID_MATCH_ANONYMOUS, },
 837 #endif
 838         PCMCIA_DEVICE_NULL
 839 };
 840 MODULE_DEVICE_TABLE(pcmcia, pcmciamtd_ids);
 841
 842 static struct pcmcia_driver pcmciamtd_driver = {
 843         .drv            = {
 844                 .name   = "pcmciamtd"
 845         },
 846         .attach         = pcmciamtd_attach,
 847         .event          = pcmciamtd_event,
 848         .detach         = pcmciamtd_detach,
 849         .owner          = THIS_MODULE,
 850         .id_table       = pcmciamtd_ids,
 851 };
 852
 853
 854 static int __init init_pcmciamtd(void)
 855 {
 856         info(DRIVER_DESC " " DRIVER_VERSION);
 857
 858         if(bankwidth && bankwidth != 1 && bankwidth != 2) {
 859                 info("bad bankwidth (%d), using default", bankwidth);
 860                 bankwidth = 2;
 861         }
 862         if(force_size && (force_size < 1 || force_size > 64)) {
 863                 info("bad force_size (%d), using default", force_size);
 864                 force_size = 0;
 865         }
 866         if(mem_type && mem_type != 1 && mem_type != 2) {
 867                 info("bad mem_type (%d), using default", mem_type);
 868                 mem_type = 0;
 869         }
 870         return pcmcia_register_driver(&pcmciamtd_driver);
 871 }
 872
 873
 874 static void __exit exit_pcmciamtd(void)
 875 {
 876         DEBUG(1, DRIVER_DESC " unloading");
 877         pcmcia_unregister_driver(&pcmciamtd_driver);
 878         BUG_ON(dev_list != NULL);
 879 }
 880
 881 module_init(init_pcmciamtd);
 882 module_exit(exit_pcmciamtd);