drivers/mtd/maps/pcmciamtd.c

   1 /*
   2  * $Id: pcmciamtd.c,v 1.51 2004/07/12 22:38:29 dwmw2 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/version.h>
  22 #include <pcmcia/cs_types.h>
  23 #include <pcmcia/cs.h>
  24 #include <pcmcia/cistpl.h>
  25 #include <pcmcia/ds.h>
  26
  27 #include <linux/mtd/map.h>
  28 #include <linux/mtd/mtd.h>
  29
  30 #ifdef CONFIG_MTD_DEBUG
  31 static int debug = CONFIG_MTD_DEBUG_VERBOSE;
  32 MODULE_PARM(debug, "i");
  33 MODULE_PARM_DESC(debug, "Set Debug Level 0=quiet, 5=noisy");
  34 #undef DEBUG
  35 #define DEBUG(n, format, arg...) \
  36         if (n <= debug) {        \
  37                 printk(KERN_DEBUG __FILE__ ":%s(): " format "\n", __FUNCTION__ , ## arg); \
  38         }
  39
  40 #else
  41 #undef DEBUG
  42 #define DEBUG(n, arg...)
  43 static const int debug = 0;
  44 #endif
  45
  46 #define err(format, arg...) printk(KERN_ERR "pcmciamtd: " format "\n" , ## arg)
  47 #define info(format, arg...) printk(KERN_INFO "pcmciamtd: " format "\n" , ## arg)
  48 #define warn(format, arg...) printk(KERN_WARNING "pcmciamtd: " format "\n" , ## arg)
  49
  50
  51 #define DRIVER_DESC     "PCMCIA Flash memory card driver"
  52 #define DRIVER_VERSION  "$Revision: 1.51 $"
  53
  54 /* Size of the PCMCIA address space: 26 bits = 64 MB */
  55 #define MAX_PCMCIA_ADDR 0x4000000
  56
  57 struct pcmciamtd_dev {
  58         dev_link_t      link;           /* PCMCIA link */
  59         dev_node_t      node;           /* device node */
  60         caddr_t         win_base;       /* ioremapped address of PCMCIA window */
  61         unsigned int    win_size;       /* size of window */
  62         unsigned int    offset;         /* offset into card the window currently points at */
  63         struct map_info pcmcia_map;
  64         struct mtd_info *mtd_info;
  65         int             vpp;
  66         char            mtd_name[sizeof(struct cistpl_vers_1_t)];
  67 };
  68
  69
  70 static dev_info_t dev_info = "pcmciamtd";
  71 static dev_link_t *dev_list;
  72
  73 /* Module parameters */
  74
  75 /* 2 = do 16-bit transfers, 1 = do 8-bit transfers */
  76 static int bankwidth = 2;
  77
  78 /* Speed of memory accesses, in ns */
  79 static int mem_speed;
  80
  81 /* Force the size of an SRAM card */
  82 static int force_size;
  83
  84 /* Force Vpp */
  85 static int vpp;
  86
  87 /* Set Vpp */
  88 static int setvpp;
  89
  90 /* Force card to be treated as FLASH, ROM or RAM */
  91 static int mem_type;
  92
  93 MODULE_LICENSE("GPL");
  94 MODULE_AUTHOR("Simon Evans <spse@secret.org.uk>");
  95 MODULE_DESCRIPTION(DRIVER_DESC);
  96 MODULE_PARM(bankwidth, "i");
  97 MODULE_PARM_DESC(bankwidth, "Set bankwidth (1=8 bit, 2=16 bit, default=2)");
  98 MODULE_PARM(mem_speed, "i");
  99 MODULE_PARM_DESC(mem_speed, "Set memory access speed in ns");
 100 MODULE_PARM(force_size, "i");
 101 MODULE_PARM_DESC(force_size, "Force size of card in MiB (1-64)");
 102 MODULE_PARM(setvpp, "i");
 103 MODULE_PARM_DESC(setvpp, "Set Vpp (0=Never, 1=On writes, 2=Always on, default=0)");
 104 MODULE_PARM(vpp, "i");
 105 MODULE_PARM_DESC(vpp, "Vpp value in 1/10ths eg 33=3.3V 120=12V (Dangerous)");
 106 MODULE_PARM(mem_type, "i");
 107 MODULE_PARM_DESC(mem_type, "Set Memory type (0=Flash, 1=RAM, 2=ROM, default=0)");
 108
 109
 110 /* read/write{8,16} copy_{from,to} routines with window remapping to access whole card */
 111 static caddr_t remap_window(struct map_info *map, unsigned long to)
 112 {
 113         struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1;
 114         window_handle_t win = (window_handle_t)map->map_priv_2;
 115         memreq_t mrq;
 116         int ret;
 117
 118         if(!(dev->link.state & DEV_PRESENT)) {
 119                 DEBUG(1, "device removed state = 0x%4.4X", dev->link.state);
 120                 return 0;
 121         }
 122
 123         mrq.CardOffset = to & ~(dev->win_size-1);
 124         if(mrq.CardOffset != dev->offset) {
 125                 DEBUG(2, "Remapping window from 0x%8.8x to 0x%8.8x",
 126                       dev->offset, mrq.CardOffset);
 127                 mrq.Page = 0;
 128                 if( (ret = pcmcia_map_mem_page(win, &mrq)) != CS_SUCCESS) {
 129                         cs_error(dev->link.handle, MapMemPage, ret);
 130                         return NULL;
 131                 }
 132                 dev->offset = mrq.CardOffset;
 133         }
 134         return dev->win_base + (to & (dev->win_size-1));
 135 }
 136
 137
 138 static map_word pcmcia_read8_remap(struct map_info *map, unsigned long ofs)
 139 {
 140         caddr_t addr;
 141         map_word d = {{0}};
 142
 143         addr = remap_window(map, ofs);
 144         if(!addr)
 145                 return d;
 146
 147         d.x[0] = readb(addr);
 148         DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%02x", ofs, addr, d.x[0]);
 149         return d;
 150 }
 151
 152
 153 static map_word pcmcia_read16_remap(struct map_info *map, unsigned long ofs)
 154 {
 155         caddr_t addr;
 156         map_word d = {{0}};
 157
 158         addr = remap_window(map, ofs);
 159         if(!addr)
 160                 return d;
 161
 162         d.x[0] = readw(addr);
 163         DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%04x", ofs, addr, d.x[0]);
 164         return d;
 165 }
 166
 167
 168 static void pcmcia_copy_from_remap(struct map_info *map, void *to, unsigned long from, ssize_t len)
 169 {
 170         struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1;
 171         unsigned long win_size = dev->win_size;
 172
 173         DEBUG(3, "to = %p from = %lu len = %u", to, from, len);
 174         while(len) {
 175                 int toread = win_size - (from & (win_size-1));
 176                 caddr_t addr;
 177
 178                 if(toread > len)
 179                         toread = len;
 180
 181                 addr = remap_window(map, from);
 182                 if(!addr)
 183                         return;
 184
 185                 DEBUG(4, "memcpy from %p to %p len = %d", addr, to, toread);
 186                 memcpy_fromio(to, addr, toread);
 187                 len -= toread;
 188                 to += toread;
 189                 from += toread;
 190         }
 191 }
 192
 193
 194 static void pcmcia_write8_remap(struct map_info *map, map_word d, unsigned long adr)
 195 {
 196         caddr_t addr = remap_window(map, adr);
 197
 198         if(!addr)
 199                 return;
 200
 201         DEBUG(3, "adr = 0x%08lx (%p)  data = 0x%02x", adr, addr, d.x[0]);
 202         writeb(d.x[0], addr);
 203 }
 204
 205
 206 static void pcmcia_write16_remap(struct map_info *map, map_word d, unsigned long adr)
 207 {
 208         caddr_t addr = remap_window(map, adr);
 209         if(!addr)
 210                 return;
 211
 212         DEBUG(3, "adr = 0x%08lx (%p)  data = 0x%04x", adr, addr, d.x[0]);
 213         writew(d.x[0], addr);
 214 }
 215
 216
 217 static void pcmcia_copy_to_remap(struct map_info *map, unsigned long to, const void *from, ssize_t len)
 218 {
 219         struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1;
 220         unsigned long win_size = dev->win_size;
 221
 222         DEBUG(3, "to = %lu from = %p len = %u", to, from, len);
 223         while(len) {
 224                 int towrite = win_size - (to & (win_size-1));
 225                 caddr_t addr;
 226
 227                 if(towrite > len)
 228                         towrite = len;
 229
 230                 addr = remap_window(map, to);
 231                 if(!addr)
 232                         return;
 233
 234                 DEBUG(4, "memcpy from %p to %p len = %d", from, addr, towrite);
 235                 memcpy_toio(addr, from, towrite);
 236                 len -= towrite;
 237                 to += towrite;
 238                 from += towrite;
 239         }
 240 }
 241
 242
 243 /* read/write{8,16} copy_{from,to} routines with direct access */
 244
 245 #define DEV_REMOVED(x)  (!(*(u_int *)x->map_priv_1 & DEV_PRESENT))
 246
 247 static map_word pcmcia_read8(struct map_info *map, unsigned long ofs)
 248 {
 249         caddr_t win_base = (caddr_t)map->map_priv_2;
 250         map_word d = {{0}};
 251
 252         if(DEV_REMOVED(map))
 253                 return d;
 254
 255         d.x[0] = readb(win_base + ofs);
 256         DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%02x", ofs, win_base + ofs, d.x[0]);
 257         return d;
 258 }
 259
 260
 261 static map_word pcmcia_read16(struct map_info *map, unsigned long ofs)
 262 {
 263         caddr_t win_base = (caddr_t)map->map_priv_2;
 264         map_word d = {{0}};
 265
 266         if(DEV_REMOVED(map))
 267                 return d;
 268
 269         d.x[0] = readw(win_base + ofs);
 270         DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%04x", ofs, win_base + ofs, d.x[0]);
 271         return d;
 272 }
 273
 274
 275 static void pcmcia_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len)
 276 {
 277         caddr_t win_base = (caddr_t)map->map_priv_2;
 278
 279         if(DEV_REMOVED(map))
 280                 return;
 281
 282         DEBUG(3, "to = %p from = %lu len = %u", to, from, len);
 283         memcpy_fromio(to, win_base + from, len);
 284 }
 285
 286
 287 static void pcmcia_write8(struct map_info *map, u8 d, unsigned long adr)
 288 {
 289         caddr_t win_base = (caddr_t)map->map_priv_2;
 290
 291         if(DEV_REMOVED(map))
 292                 return;
 293
 294         DEBUG(3, "adr = 0x%08lx (%p)  data = 0x%02x", adr, win_base + adr, d);
 295         writeb(d, win_base + adr);
 296 }
 297
 298
 299 static void pcmcia_write16(struct map_info *map, u16 d, unsigned long adr)
 300 {
 301         caddr_t win_base = (caddr_t)map->map_priv_2;
 302
 303         if(DEV_REMOVED(map))
 304                 return;
 305
 306         DEBUG(3, "adr = 0x%08lx (%p)  data = 0x%04x", adr, win_base + adr, d);
 307         writew(d, win_base + adr);
 308 }
 309
 310
 311 static void pcmcia_copy_to(struct map_info *map, unsigned long to, const void *from, ssize_t len)
 312 {
 313         caddr_t win_base = (caddr_t)map->map_priv_2;
 314
 315         if(DEV_REMOVED(map))
 316                 return;
 317
 318         DEBUG(3, "to = %lu from = %p len = %u", to, from, len);
 319         memcpy_toio(win_base + to, from, len);
 320 }
 321
 322
 323 static void pcmciamtd_set_vpp(struct map_info *map, int on)
 324 {
 325         struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1;
 326         dev_link_t *link = &dev->link;
 327         modconf_t mod;
 328         int ret;
 329
 330         mod.Attributes = CONF_VPP1_CHANGE_VALID | CONF_VPP2_CHANGE_VALID;
 331         mod.Vcc = 0;
 332         mod.Vpp1 = mod.Vpp2 = on ? dev->vpp : 0;
 333
 334         DEBUG(2, "dev = %p on = %d vpp = %d\n", dev, on, dev->vpp);
 335         ret = pcmcia_modify_configuration(link->handle, &mod);
 336         if(ret != CS_SUCCESS) {
 337                 cs_error(link->handle, ModifyConfiguration, ret);
 338         }
 339 }
 340
 341
 342 /* After a card is removed, pcmciamtd_release() will unregister the
 343  * device, and release the PCMCIA configuration.  If the device is
 344  * still open, this will be postponed until it is closed.
 345  */
 346
 347 static void pcmciamtd_release(dev_link_t *link)
 348 {
 349         struct pcmciamtd_dev *dev = link->priv;
 350
 351         DEBUG(3, "link = 0x%p", link);
 352
 353         if (link->win) {
 354                 if(dev->win_base) {
 355                         iounmap(dev->win_base);
 356                         dev->win_base = NULL;
 357                 }
 358                 pcmcia_release_window(link->win);
 359         }
 360         pcmcia_release_configuration(link->handle);
 361         link->state &= ~DEV_CONFIG;
 362 }
 363
 364
 365 static void card_settings(struct pcmciamtd_dev *dev, dev_link_t *link, int *new_name)
 366 {
 367         int rc;
 368         tuple_t tuple;
 369         cisparse_t parse;
 370         u_char buf[64];
 371
 372         tuple.Attributes = 0;
 373         tuple.TupleData = (cisdata_t *)buf;
 374         tuple.TupleDataMax = sizeof(buf);
 375         tuple.TupleOffset = 0;
 376         tuple.DesiredTuple = RETURN_FIRST_TUPLE;
 377
 378         rc = pcmcia_get_first_tuple(link->handle, &tuple);
 379         while(rc == CS_SUCCESS) {
 380                 rc = pcmcia_get_tuple_data(link->handle, &tuple);
 381                 if(rc != CS_SUCCESS) {
 382                         cs_error(link->handle, GetTupleData, rc);
 383                         break;
 384                 }
 385                 rc = pcmcia_parse_tuple(link->handle, &tuple, &parse);
 386                 if(rc != CS_SUCCESS) {
 387                         cs_error(link->handle, ParseTuple, rc);
 388                         break;
 389                 }
 390
 391                 switch(tuple.TupleCode) {
 392                 case  CISTPL_FORMAT: {
 393                         cistpl_format_t *t = &parse.format;
 394                         (void)t; /* Shut up, gcc */
 395                         DEBUG(2, "Format type: %u, Error Detection: %u, offset = %u, length =%u",
 396                               t->type, t->edc, t->offset, t->length);
 397                         break;
 398
 399                 }
 400
 401                 case CISTPL_DEVICE: {
 402                         cistpl_device_t *t = &parse.device;
 403                         int i;
 404                         DEBUG(2, "Common memory:");
 405                         dev->pcmcia_map.size = t->dev[0].size;
 406                         for(i = 0; i < t->ndev; i++) {
 407                                 DEBUG(2, "Region %d, type = %u", i, t->dev[i].type);
 408                                 DEBUG(2, "Region %d, wp = %u", i, t->dev[i].wp);
 409                                 DEBUG(2, "Region %d, speed = %u ns", i, t->dev[i].speed);
 410                                 DEBUG(2, "Region %d, size = %u bytes", i, t->dev[i].size);
 411                         }
 412                         break;
 413                 }
 414
 415                 case CISTPL_VERS_1: {
 416                         cistpl_vers_1_t *t = &parse.version_1;
 417                         int i;
 418                         if(t->ns) {
 419                                 dev->mtd_name[0] = '\0';
 420                                 for(i = 0; i < t->ns; i++) {
 421                                         if(i)
 422                                                 strcat(dev->mtd_name, " ");
 423                                         strcat(dev->mtd_name, t->str+t->ofs[i]);
 424                                 }
 425                         }
 426                         DEBUG(2, "Found name: %s", dev->mtd_name);
 427                         break;
 428                 }
 429
 430                 case CISTPL_JEDEC_C: {
 431                         cistpl_jedec_t *t = &parse.jedec;
 432                         int i;
 433                         for(i = 0; i < t->nid; i++) {
 434                                 DEBUG(2, "JEDEC: 0x%02x 0x%02x", t->id[i].mfr, t->id[i].info);
 435                         }
 436                         break;
 437                 }
 438
 439                 case CISTPL_DEVICE_GEO: {
 440                         cistpl_device_geo_t *t = &parse.device_geo;
 441                         int i;
 442                         dev->pcmcia_map.bankwidth = t->geo[0].buswidth;
 443                         for(i = 0; i < t->ngeo; i++) {
 444                                 DEBUG(2, "region: %d bankwidth = %u", i, t->geo[i].buswidth);
 445                                 DEBUG(2, "region: %d erase_block = %u", i, t->geo[i].erase_block);
 446                                 DEBUG(2, "region: %d read_block = %u", i, t->geo[i].read_block);
 447                                 DEBUG(2, "region: %d write_block = %u", i, t->geo[i].write_block);
 448                                 DEBUG(2, "region: %d partition = %u", i, t->geo[i].partition);
 449                                 DEBUG(2, "region: %d interleave = %u", i, t->geo[i].interleave);
 450                         }
 451                         break;
 452                 }
 453
 454                 default:
 455                         DEBUG(2, "Unknown tuple code %d", tuple.TupleCode);
 456                 }
 457
 458                 rc = pcmcia_get_next_tuple(link->handle, &tuple);
 459         }
 460         if(!dev->pcmcia_map.size)
 461                 dev->pcmcia_map.size = MAX_PCMCIA_ADDR;
 462
 463         if(!dev->pcmcia_map.bankwidth)
 464                 dev->pcmcia_map.bankwidth = 2;
 465
 466         if(force_size) {
 467                 dev->pcmcia_map.size = force_size << 20;
 468                 DEBUG(2, "size forced to %dM", force_size);
 469         }
 470
 471         if(bankwidth) {
 472                 dev->pcmcia_map.bankwidth = bankwidth;
 473                 DEBUG(2, "bankwidth forced to %d", bankwidth);
 474         }
 475
 476         dev->pcmcia_map.name = dev->mtd_name;
 477         if(!dev->mtd_name[0]) {
 478                 strcpy(dev->mtd_name, "PCMCIA Memory card");
 479                 *new_name = 1;
 480         }
 481
 482         DEBUG(1, "Device: Size: %lu Width:%d Name: %s",
 483               dev->pcmcia_map.size, dev->pcmcia_map.bankwidth << 3, dev->mtd_name);
 484 }
 485
 486
 487 /* pcmciamtd_config() is scheduled to run after a CARD_INSERTION event
 488  * is received, to configure the PCMCIA socket, and to make the
 489  * MTD device available to the system.
 490  */
 491
 492 #define CS_CHECK(fn, ret) \
 493 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
 494
 495 static void pcmciamtd_config(dev_link_t *link)
 496 {
 497         struct pcmciamtd_dev *dev = link->priv;
 498         struct mtd_info *mtd = NULL;
 499         cs_status_t status;
 500         win_req_t req;
 501         int last_ret = 0, last_fn = 0;
 502         int ret;
 503         int i;
 504         config_info_t t;
 505         static char *probes[] = { "jedec_probe", "cfi_probe" };
 506         cisinfo_t cisinfo;
 507         int new_name = 0;
 508
 509         DEBUG(3, "link=0x%p", link);
 510
 511         /* Configure card */
 512         link->state |= DEV_CONFIG;
 513
 514         DEBUG(2, "Validating CIS");
 515         ret = pcmcia_validate_cis(link->handle, &cisinfo);
 516         if(ret != CS_SUCCESS) {
 517                 cs_error(link->handle, GetTupleData, ret);
 518         } else {
 519                 DEBUG(2, "ValidateCIS found %d chains", cisinfo.Chains);
 520         }
 521
 522         card_settings(dev, link, &new_name);
 523
 524         dev->pcmcia_map.phys = NO_XIP;
 525         dev->pcmcia_map.copy_from = pcmcia_copy_from_remap;
 526         dev->pcmcia_map.copy_to = pcmcia_copy_to_remap;
 527         if (dev->pcmcia_map.bankwidth == 1) {
 528                 dev->pcmcia_map.read = pcmcia_read8_remap;
 529                 dev->pcmcia_map.write = pcmcia_write8_remap;
 530         } else {
 531                 dev->pcmcia_map.read = pcmcia_read16_remap;
 532                 dev->pcmcia_map.write = pcmcia_write16_remap;
 533         }
 534         if(setvpp == 1)
 535                 dev->pcmcia_map.set_vpp = pcmciamtd_set_vpp;
 536
 537         /* Request a memory window for PCMCIA. Some architeures can map windows upto the maximum
 538            that PCMCIA can support (64MiB) - this is ideal and we aim for a window the size of the
 539            whole card - otherwise we try smaller windows until we succeed */
 540
 541         req.Attributes =  WIN_MEMORY_TYPE_CM | WIN_ENABLE;
 542         req.Attributes |= (dev->pcmcia_map.bankwidth == 1) ? WIN_DATA_WIDTH_8 : WIN_DATA_WIDTH_16;
 543         req.Base = 0;
 544         req.AccessSpeed = mem_speed;
 545         link->win = (window_handle_t)link->handle;
 546         req.Size = (force_size) ? force_size << 20 : MAX_PCMCIA_ADDR;
 547         dev->win_size = 0;
 548
 549         do {
 550                 int ret;
 551                 DEBUG(2, "requesting window with size = %dKiB memspeed = %d",
 552                       req.Size >> 10, req.AccessSpeed);
 553                 ret = pcmcia_request_window(&link->handle, &req, &link->win);
 554                 DEBUG(2, "ret = %d dev->win_size = %d", ret, dev->win_size);
 555                 if(ret) {
 556                         req.Size >>= 1;
 557                 } else {
 558                         DEBUG(2, "Got window of size %dKiB", req.Size >> 10);
 559                         dev->win_size = req.Size;
 560                         break;
 561                 }
 562         } while(req.Size >= 0x1000);
 563
 564         DEBUG(2, "dev->win_size = %d", dev->win_size);
 565
 566         if(!dev->win_size) {
 567                 err("Cant allocate memory window");
 568                 pcmciamtd_release(link);
 569                 return;
 570         }
 571         DEBUG(1, "Allocated a window of %dKiB", dev->win_size >> 10);
 572
 573         /* Get write protect status */
 574         CS_CHECK(GetStatus, pcmcia_get_status(link->handle, &status));
 575         DEBUG(2, "status value: 0x%x window handle = 0x%8.8lx",
 576               status.CardState, (unsigned long)link->win);
 577         dev->win_base = ioremap(req.Base, req.Size);
 578         if(!dev->win_base) {
 579                 err("ioremap(%lu, %u) failed", req.Base, req.Size);
 580                 pcmciamtd_release(link);
 581                 return;
 582         }
 583         DEBUG(1, "mapped window dev = %p req.base = 0x%lx base = %p size = 0x%x",
 584               dev, req.Base, dev->win_base, req.Size);
 585
 586         dev->offset = 0;
 587         dev->pcmcia_map.map_priv_1 = (unsigned long)dev;
 588         dev->pcmcia_map.map_priv_2 = (unsigned long)link->win;
 589
 590         DEBUG(2, "Getting configuration");
 591         CS_CHECK(GetConfigurationInfo, pcmcia_get_configuration_info(link->handle, &t));
 592         DEBUG(2, "Vcc = %d Vpp1 = %d Vpp2 = %d", t.Vcc, t.Vpp1, t.Vpp2);
 593         dev->vpp = (vpp) ? vpp : t.Vpp1;
 594         link->conf.Attributes = 0;
 595         link->conf.Vcc = t.Vcc;
 596         if(setvpp == 2) {
 597                 link->conf.Vpp1 = dev->vpp;
 598                 link->conf.Vpp2 = dev->vpp;
 599         } else {
 600                 link->conf.Vpp1 = 0;
 601                 link->conf.Vpp2 = 0;
 602         }
 603
 604         link->conf.IntType = INT_MEMORY;
 605         link->conf.ConfigBase = t.ConfigBase;
 606         link->conf.Status = t.Status;
 607         link->conf.Pin = t.Pin;
 608         link->conf.Copy = t.Copy;
 609         link->conf.ExtStatus = t.ExtStatus;
 610         link->conf.ConfigIndex = 0;
 611         link->conf.Present = t.Present;
 612         DEBUG(2, "Setting Configuration");
 613         ret = pcmcia_request_configuration(link->handle, &link->conf);
 614         if(ret != CS_SUCCESS) {
 615                 cs_error(link->handle, RequestConfiguration, ret);
 616         }
 617
 618         if(mem_type == 1) {
 619                 mtd = do_map_probe("map_ram", &dev->pcmcia_map);
 620         } else if(mem_type == 2) {
 621                 mtd = do_map_probe("map_rom", &dev->pcmcia_map);
 622         } else {
 623                 for(i = 0; i < sizeof(probes) / sizeof(char *); i++) {
 624                         DEBUG(1, "Trying %s", probes[i]);
 625                         mtd = do_map_probe(probes[i], &dev->pcmcia_map);
 626                         if(mtd)
 627                                 break;
 628
 629                         DEBUG(1, "FAILED: %s", probes[i]);
 630                 }
 631         }
 632
 633         if(!mtd) {
 634                 DEBUG(1, "Cant find an MTD");
 635                 pcmciamtd_release(link);
 636                 return;
 637         }
 638
 639         dev->mtd_info = mtd;
 640         mtd->owner = THIS_MODULE;
 641
 642         if(new_name) {
 643                 int size = 0;
 644                 char unit = ' ';
 645                 /* Since we are using a default name, make it better by adding in the
 646                    size */
 647                 if(mtd->size < 1048576) { /* <1MiB in size, show size in KiB */
 648                         size = mtd->size >> 10;
 649                         unit = 'K';
 650                 } else {
 651                         size = mtd->size >> 20;
 652                         unit = 'M';
 653                 }
 654                 snprintf(dev->mtd_name, sizeof(dev->mtd_name), "%d%ciB %s", size, unit, "PCMCIA Memory card");
 655         }
 656
 657         /* If the memory found is fits completely into the mapped PCMCIA window,
 658            use the faster non-remapping read/write functions */
 659         if(mtd->size <= dev->win_size) {
 660                 DEBUG(1, "Using non remapping memory functions");
 661                 dev->pcmcia_map.map_priv_1 = (unsigned long)&(dev->link.state);
 662                 dev->pcmcia_map.map_priv_2 = (unsigned long)dev->win_base;
 663                 if (dev->pcmcia_map.bankwidth == 1) {
 664                         dev->pcmcia_map.read = pcmcia_read8;
 665                         dev->pcmcia_map.write = pcmcia_write8;
 666                 } else {
 667                         dev->pcmcia_map.read = pcmcia_read16;
 668                         dev->pcmcia_map.write = pcmcia_write16;
 669                 }
 670                 dev->pcmcia_map.copy_from = pcmcia_copy_from;
 671                 dev->pcmcia_map.copy_to = pcmcia_copy_to;
 672         }
 673
 674         if(add_mtd_device(mtd)) {
 675                 map_destroy(mtd);
 676                 dev->mtd_info = NULL;
 677                 err("Couldnt register MTD device");
 678                 pcmciamtd_release(link);
 679                 return;
 680         }
 681         snprintf(dev->node.dev_name, sizeof(dev->node.dev_name), "mtd%d", mtd->index);
 682         info("mtd%d: %s", mtd->index, mtd->name);
 683         link->state &= ~DEV_CONFIG_PENDING;
 684         link->dev = &dev->node;
 685         return;
 686
 687  cs_failed:
 688         cs_error(link->handle, last_fn, last_ret);
 689         err("CS Error, exiting");
 690         pcmciamtd_release(link);
 691         return;
 692 }
 693
 694
 695 /* The card status event handler.  Mostly, this schedules other
 696  * stuff to run after an event is received.  A CARD_REMOVAL event
 697  * also sets some flags to discourage the driver from trying
 698  * to talk to the card any more.
 699  */
 700
 701 static int pcmciamtd_event(event_t event, int priority,
 702                         event_callback_args_t *args)
 703 {
 704         dev_link_t *link = args->client_data;
 705
 706         DEBUG(1, "event=0x%06x", event);
 707         switch (event) {
 708         case CS_EVENT_CARD_REMOVAL:
 709                 DEBUG(2, "EVENT_CARD_REMOVAL");
 710                 link->state &= ~DEV_PRESENT;
 711                 if (link->state & DEV_CONFIG) {
 712                         struct pcmciamtd_dev *dev = link->priv;
 713                         if(dev->mtd_info) {
 714                                 del_mtd_device(dev->mtd_info);
 715                                 info("mtd%d: Removed", dev->mtd_info->index);
 716                         }
 717                         pcmciamtd_release(link);
 718                 }
 719                 break;
 720         case CS_EVENT_CARD_INSERTION:
 721                 DEBUG(2, "EVENT_CARD_INSERTION");
 722                 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
 723                 pcmciamtd_config(link);
 724                 break;
 725         case CS_EVENT_PM_SUSPEND:
 726                 DEBUG(2, "EVENT_PM_SUSPEND");
 727                 link->state |= DEV_SUSPEND;
 728                 /* Fall through... */
 729         case CS_EVENT_RESET_PHYSICAL:
 730                 DEBUG(2, "EVENT_RESET_PHYSICAL");
 731                 /* get_lock(link); */
 732                 break;
 733         case CS_EVENT_PM_RESUME:
 734                 DEBUG(2, "EVENT_PM_RESUME");
 735                 link->state &= ~DEV_SUSPEND;
 736                 /* Fall through... */
 737         case CS_EVENT_CARD_RESET:
 738                 DEBUG(2, "EVENT_CARD_RESET");
 739                 /* free_lock(link); */
 740                 break;
 741         default:
 742                 DEBUG(2, "Unknown event %d", event);
 743         }
 744         return 0;
 745 }
 746
 747
 748 /* This deletes a driver "instance".  The device is de-registered
 749  * with Card Services.  If it has been released, all local data
 750  * structures are freed.  Otherwise, the structures will be freed
 751  * when the device is released.
 752  */
 753
 754 static void pcmciamtd_detach(dev_link_t *link)
 755 {
 756         DEBUG(3, "link=0x%p", link);
 757
 758         if(link->state & DEV_CONFIG) {
 759                 pcmciamtd_release(link);
 760         }
 761
 762         if (link->handle) {
 763                 int ret;
 764                 DEBUG(2, "Deregistering with card services");
 765                 ret = pcmcia_deregister_client(link->handle);
 766                 if (ret != CS_SUCCESS)
 767                         cs_error(link->handle, DeregisterClient, ret);
 768         }
 769
 770         link->state |= DEV_STALE_LINK;
 771 }
 772
 773
 774 /* pcmciamtd_attach() creates an "instance" of the driver, allocating
 775  * local data structures for one device.  The device is registered
 776  * with Card Services.
 777  */
 778
 779 static dev_link_t *pcmciamtd_attach(void)
 780 {
 781         struct pcmciamtd_dev *dev;
 782         dev_link_t *link;
 783         client_reg_t client_reg;
 784         int ret;
 785
 786         /* Create new memory card device */
 787         dev = kmalloc(sizeof(*dev), GFP_KERNEL);
 788         if (!dev) return NULL;
 789         DEBUG(1, "dev=0x%p", dev);
 790
 791         memset(dev, 0, sizeof(*dev));
 792         link = &dev->link;
 793         link->priv = dev;
 794
 795         link->conf.Attributes = 0;
 796         link->conf.IntType = INT_MEMORY;
 797
 798         link->next = dev_list;
 799         dev_list = link;
 800
 801         /* Register with Card Services */
 802         client_reg.dev_info = &dev_info;
 803         client_reg.Attributes = INFO_IO_CLIENT | INFO_CARD_SHARE;
 804         client_reg.EventMask =
 805                 CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET |
 806                 CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL |
 807                 CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME;
 808         client_reg.event_handler = &pcmciamtd_event;
 809         client_reg.Version = 0x0210;
 810         client_reg.event_callback_args.client_data = link;
 811         DEBUG(2, "Calling RegisterClient");
 812         ret = pcmcia_register_client(&link->handle, &client_reg);
 813         if (ret != 0) {
 814                 cs_error(link->handle, RegisterClient, ret);
 815                 pcmciamtd_detach(link);
 816                 return NULL;
 817         }
 818         DEBUG(2, "link = %p", link);
 819         return link;
 820 }
 821
 822
 823 static struct pcmcia_driver pcmciamtd_driver = {
 824         .drv            = {
 825                 .name   = "pcmciamtd"
 826         },
 827         .attach         = pcmciamtd_attach,
 828         .detach         = pcmciamtd_detach,
 829         .owner          = THIS_MODULE
 830 };
 831
 832
 833 static int __init init_pcmciamtd(void)
 834 {
 835         info(DRIVER_DESC " " DRIVER_VERSION);
 836
 837         if(bankwidth && bankwidth != 1 && bankwidth != 2) {
 838                 info("bad bankwidth (%d), using default", bankwidth);
 839                 bankwidth = 2;
 840         }
 841         if(force_size && (force_size < 1 || force_size > 64)) {
 842                 info("bad force_size (%d), using default", force_size);
 843                 force_size = 0;
 844         }
 845         if(mem_type && mem_type != 1 && mem_type != 2) {
 846                 info("bad mem_type (%d), using default", mem_type);
 847                 mem_type = 0;
 848         }
 849         return pcmcia_register_driver(&pcmciamtd_driver);
 850 }
 851
 852
 853 static void __exit exit_pcmciamtd(void)
 854 {
 855         DEBUG(1, DRIVER_DESC " unloading");
 856         pcmcia_unregister_driver(&pcmciamtd_driver);
 857
 858         while(dev_list) {
 859                 dev_link_t *link = dev_list;
 860
 861                 dev_list = link->next;
 862                 if (link) {
 863                         struct pcmciamtd_dev *dev = link->priv;
 864
 865                         if(dev) {
 866                                 if(link->state & DEV_PRESENT) {
 867                                         if (!(link->state & DEV_STALE_LINK)) {
 868                                                 pcmciamtd_detach(link);
 869                                         }
 870                                         link->state &= ~DEV_PRESENT;
 871                                         if(dev->mtd_info) {
 872                                                 del_mtd_device(dev->mtd_info);
 873                                                 info("mtd%d: Removed",
 874                                                      dev->mtd_info->index);
 875                                         }
 876                                 }
 877                                 if(dev->mtd_info) {
 878                                         DEBUG(2, "Destroying map for mtd%d",
 879                                               dev->mtd_info->index);
 880                                         map_destroy(dev->mtd_info);
 881                                 }
 882                                 kfree(dev);
 883                         }
 884                 }
 885         }
 886 }
 887
 888 module_init(init_pcmciamtd);
 889 module_exit(exit_pcmciamtd);