linux/drivers/mtd/maps/pcmciamtd.c
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   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
  18#include <pcmcia/cistpl.h>
  19#include <pcmcia/ds.h>
  20
  21#include <linux/mtd/map.h>
  22#include <linux/mtd/mtd.h>
  23
  24#define info(format, arg...) printk(KERN_INFO "pcmciamtd: " format "\n" , ## arg)
  25
  26#define DRIVER_DESC     "PCMCIA Flash memory card driver"
  27
  28/* Size of the PCMCIA address space: 26 bits = 64 MB */
  29#define MAX_PCMCIA_ADDR 0x4000000
  30
  31struct pcmciamtd_dev {
  32        struct pcmcia_device    *p_dev;
  33        caddr_t         win_base;       /* ioremapped address of PCMCIA window */
  34        unsigned int    win_size;       /* size of window */
  35        unsigned int    offset;         /* offset into card the window currently points at */
  36        struct map_info pcmcia_map;
  37        struct mtd_info *mtd_info;
  38        int             vpp;
  39        char            mtd_name[sizeof(struct cistpl_vers_1_t)];
  40};
  41
  42
  43/* Module parameters */
  44
  45/* 2 = do 16-bit transfers, 1 = do 8-bit transfers */
  46static int bankwidth = 2;
  47
  48/* Speed of memory accesses, in ns */
  49static int mem_speed;
  50
  51/* Force the size of an SRAM card */
  52static int force_size;
  53
  54/* Force Vpp */
  55static int vpp;
  56
  57/* Set Vpp */
  58static int setvpp;
  59
  60/* Force card to be treated as FLASH, ROM or RAM */
  61static int mem_type;
  62
  63MODULE_LICENSE("GPL");
  64MODULE_AUTHOR("Simon Evans <spse@secret.org.uk>");
  65MODULE_DESCRIPTION(DRIVER_DESC);
  66module_param(bankwidth, int, 0);
  67MODULE_PARM_DESC(bankwidth, "Set bankwidth (1=8 bit, 2=16 bit, default=2)");
  68module_param(mem_speed, int, 0);
  69MODULE_PARM_DESC(mem_speed, "Set memory access speed in ns");
  70module_param(force_size, int, 0);
  71MODULE_PARM_DESC(force_size, "Force size of card in MiB (1-64)");
  72module_param(setvpp, int, 0);
  73MODULE_PARM_DESC(setvpp, "Set Vpp (0=Never, 1=On writes, 2=Always on, default=0)");
  74module_param(vpp, int, 0);
  75MODULE_PARM_DESC(vpp, "Vpp value in 1/10ths eg 33=3.3V 120=12V (Dangerous)");
  76module_param(mem_type, int, 0);
  77MODULE_PARM_DESC(mem_type, "Set Memory type (0=Flash, 1=RAM, 2=ROM, default=0)");
  78
  79
  80/* read/write{8,16} copy_{from,to} routines with window remapping
  81 * to access whole card
  82 */
  83static caddr_t remap_window(struct map_info *map, unsigned long to)
  84{
  85        struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1;
  86        struct resource *win = (struct resource *) map->map_priv_2;
  87        unsigned int offset;
  88        int ret;
  89
  90        if (!pcmcia_dev_present(dev->p_dev)) {
  91                pr_debug("device removed\n");
  92                return NULL;
  93        }
  94
  95        offset = to & ~(dev->win_size-1);
  96        if (offset != dev->offset) {
  97                pr_debug("Remapping window from 0x%8.8x to 0x%8.8x\n",
  98                      dev->offset, offset);
  99                ret = pcmcia_map_mem_page(dev->p_dev, win, offset);
 100                if (ret != 0)
 101                        return NULL;
 102                dev->offset = offset;
 103        }
 104        return dev->win_base + (to & (dev->win_size-1));
 105}
 106
 107
 108static map_word pcmcia_read8_remap(struct map_info *map, unsigned long ofs)
 109{
 110        caddr_t addr;
 111        map_word d = {{0}};
 112
 113        addr = remap_window(map, ofs);
 114        if(!addr)
 115                return d;
 116
 117        d.x[0] = readb(addr);
 118        pr_debug("ofs = 0x%08lx (%p) data = 0x%02lx\n", ofs, addr, d.x[0]);
 119        return d;
 120}
 121
 122
 123static map_word pcmcia_read16_remap(struct map_info *map, unsigned long ofs)
 124{
 125        caddr_t addr;
 126        map_word d = {{0}};
 127
 128        addr = remap_window(map, ofs);
 129        if(!addr)
 130                return d;
 131
 132        d.x[0] = readw(addr);
 133        pr_debug("ofs = 0x%08lx (%p) data = 0x%04lx\n", ofs, addr, d.x[0]);
 134        return d;
 135}
 136
 137
 138static void pcmcia_copy_from_remap(struct map_info *map, void *to, unsigned long from, ssize_t len)
 139{
 140        struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1;
 141        unsigned long win_size = dev->win_size;
 142
 143        pr_debug("to = %p from = %lu len = %zd\n", to, from, len);
 144        while(len) {
 145                int toread = win_size - (from & (win_size-1));
 146                caddr_t addr;
 147
 148                if(toread > len)
 149                        toread = len;
 150
 151                addr = remap_window(map, from);
 152                if(!addr)
 153                        return;
 154
 155                pr_debug("memcpy from %p to %p len = %d\n", addr, to, toread);
 156                memcpy_fromio(to, addr, toread);
 157                len -= toread;
 158                to += toread;
 159                from += toread;
 160        }
 161}
 162
 163
 164static void pcmcia_write8_remap(struct map_info *map, map_word d, unsigned long adr)
 165{
 166        caddr_t addr = remap_window(map, adr);
 167
 168        if(!addr)
 169                return;
 170
 171        pr_debug("adr = 0x%08lx (%p)  data = 0x%02lx\n", adr, addr, d.x[0]);
 172        writeb(d.x[0], addr);
 173}
 174
 175
 176static void pcmcia_write16_remap(struct map_info *map, map_word d, unsigned long adr)
 177{
 178        caddr_t addr = remap_window(map, adr);
 179        if(!addr)
 180                return;
 181
 182        pr_debug("adr = 0x%08lx (%p)  data = 0x%04lx\n", adr, addr, d.x[0]);
 183        writew(d.x[0], addr);
 184}
 185
 186
 187static void pcmcia_copy_to_remap(struct map_info *map, unsigned long to, const void *from, ssize_t len)
 188{
 189        struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1;
 190        unsigned long win_size = dev->win_size;
 191
 192        pr_debug("to = %lu from = %p len = %zd\n", to, from, len);
 193        while(len) {
 194                int towrite = win_size - (to & (win_size-1));
 195                caddr_t addr;
 196
 197                if(towrite > len)
 198                        towrite = len;
 199
 200                addr = remap_window(map, to);
 201                if(!addr)
 202                        return;
 203
 204                pr_debug("memcpy from %p to %p len = %d\n", from, addr, towrite);
 205                memcpy_toio(addr, from, towrite);
 206                len -= towrite;
 207                to += towrite;
 208                from += towrite;
 209        }
 210}
 211
 212
 213/* read/write{8,16} copy_{from,to} routines with direct access */
 214
 215#define DEV_REMOVED(x)  (!(pcmcia_dev_present(((struct pcmciamtd_dev *)map->map_priv_1)->p_dev)))
 216
 217static map_word pcmcia_read8(struct map_info *map, unsigned long ofs)
 218{
 219        caddr_t win_base = (caddr_t)map->map_priv_2;
 220        map_word d = {{0}};
 221
 222        if(DEV_REMOVED(map))
 223                return d;
 224
 225        d.x[0] = readb(win_base + ofs);
 226        pr_debug("ofs = 0x%08lx (%p) data = 0x%02lx\n",
 227              ofs, win_base + ofs, d.x[0]);
 228        return d;
 229}
 230
 231
 232static map_word pcmcia_read16(struct map_info *map, unsigned long ofs)
 233{
 234        caddr_t win_base = (caddr_t)map->map_priv_2;
 235        map_word d = {{0}};
 236
 237        if(DEV_REMOVED(map))
 238                return d;
 239
 240        d.x[0] = readw(win_base + ofs);
 241        pr_debug("ofs = 0x%08lx (%p) data = 0x%04lx\n",
 242              ofs, win_base + ofs, d.x[0]);
 243        return d;
 244}
 245
 246
 247static void pcmcia_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len)
 248{
 249        caddr_t win_base = (caddr_t)map->map_priv_2;
 250
 251        if(DEV_REMOVED(map))
 252                return;
 253
 254        pr_debug("to = %p from = %lu len = %zd\n", to, from, len);
 255        memcpy_fromio(to, win_base + from, len);
 256}
 257
 258
 259static void pcmcia_write8(struct map_info *map, map_word d, unsigned long adr)
 260{
 261        caddr_t win_base = (caddr_t)map->map_priv_2;
 262
 263        if(DEV_REMOVED(map))
 264                return;
 265
 266        pr_debug("adr = 0x%08lx (%p)  data = 0x%02lx\n",
 267              adr, win_base + adr, d.x[0]);
 268        writeb(d.x[0], win_base + adr);
 269}
 270
 271
 272static void pcmcia_write16(struct map_info *map, map_word d, unsigned long adr)
 273{
 274        caddr_t win_base = (caddr_t)map->map_priv_2;
 275
 276        if(DEV_REMOVED(map))
 277                return;
 278
 279        pr_debug("adr = 0x%08lx (%p)  data = 0x%04lx\n",
 280              adr, win_base + adr, d.x[0]);
 281        writew(d.x[0], win_base + adr);
 282}
 283
 284
 285static void pcmcia_copy_to(struct map_info *map, unsigned long to, const void *from, ssize_t len)
 286{
 287        caddr_t win_base = (caddr_t)map->map_priv_2;
 288
 289        if(DEV_REMOVED(map))
 290                return;
 291
 292        pr_debug("to = %lu from = %p len = %zd\n", to, from, len);
 293        memcpy_toio(win_base + to, from, len);
 294}
 295
 296
 297static DEFINE_SPINLOCK(pcmcia_vpp_lock);
 298static int pcmcia_vpp_refcnt;
 299static void pcmciamtd_set_vpp(struct map_info *map, int on)
 300{
 301        struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1;
 302        struct pcmcia_device *link = dev->p_dev;
 303        unsigned long flags;
 304
 305        pr_debug("dev = %p on = %d vpp = %d\n\n", dev, on, dev->vpp);
 306        spin_lock_irqsave(&pcmcia_vpp_lock, flags);
 307        if (on) {
 308                if (++pcmcia_vpp_refcnt == 1)   /* first nested 'on' */
 309                        pcmcia_fixup_vpp(link, dev->vpp);
 310        } else {
 311                if (--pcmcia_vpp_refcnt == 0)   /* last nested 'off' */
 312                        pcmcia_fixup_vpp(link, 0);
 313        }
 314        spin_unlock_irqrestore(&pcmcia_vpp_lock, flags);
 315}
 316
 317
 318static void pcmciamtd_release(struct pcmcia_device *link)
 319{
 320        struct pcmciamtd_dev *dev = link->priv;
 321
 322        pr_debug("link = 0x%p\n", link);
 323
 324        if (link->resource[2]->end) {
 325                if(dev->win_base) {
 326                        iounmap(dev->win_base);
 327                        dev->win_base = NULL;
 328                }
 329        }
 330        pcmcia_disable_device(link);
 331}
 332
 333
 334static int pcmciamtd_cistpl_format(struct pcmcia_device *p_dev,
 335                                tuple_t *tuple,
 336                                void *priv_data)
 337{
 338        cisparse_t parse;
 339
 340        if (!pcmcia_parse_tuple(tuple, &parse)) {
 341                cistpl_format_t *t = &parse.format;
 342                (void)t; /* Shut up, gcc */
 343                pr_debug("Format type: %u, Error Detection: %u, offset = %u, length =%u\n",
 344                        t->type, t->edc, t->offset, t->length);
 345        }
 346        return -ENOSPC;
 347}
 348
 349static int pcmciamtd_cistpl_jedec(struct pcmcia_device *p_dev,
 350                                tuple_t *tuple,
 351                                void *priv_data)
 352{
 353        cisparse_t parse;
 354        int i;
 355
 356        if (!pcmcia_parse_tuple(tuple, &parse)) {
 357                cistpl_jedec_t *t = &parse.jedec;
 358                for (i = 0; i < t->nid; i++)
 359                        pr_debug("JEDEC: 0x%02x 0x%02x\n",
 360                              t->id[i].mfr, t->id[i].info);
 361        }
 362        return -ENOSPC;
 363}
 364
 365static int pcmciamtd_cistpl_device(struct pcmcia_device *p_dev,
 366                                tuple_t *tuple,
 367                                void *priv_data)
 368{
 369        struct pcmciamtd_dev *dev = priv_data;
 370        cisparse_t parse;
 371        cistpl_device_t *t = &parse.device;
 372        int i;
 373
 374        if (pcmcia_parse_tuple(tuple, &parse))
 375                return -EINVAL;
 376
 377        pr_debug("Common memory:\n");
 378        dev->pcmcia_map.size = t->dev[0].size;
 379        /* from here on: DEBUG only */
 380        for (i = 0; i < t->ndev; i++) {
 381                pr_debug("Region %d, type = %u\n", i, t->dev[i].type);
 382                pr_debug("Region %d, wp = %u\n", i, t->dev[i].wp);
 383                pr_debug("Region %d, speed = %u ns\n", i, t->dev[i].speed);
 384                pr_debug("Region %d, size = %u bytes\n", i, t->dev[i].size);
 385        }
 386        return 0;
 387}
 388
 389static int pcmciamtd_cistpl_geo(struct pcmcia_device *p_dev,
 390                                tuple_t *tuple,
 391                                void *priv_data)
 392{
 393        struct pcmciamtd_dev *dev = priv_data;
 394        cisparse_t parse;
 395        cistpl_device_geo_t *t = &parse.device_geo;
 396        int i;
 397
 398        if (pcmcia_parse_tuple(tuple, &parse))
 399                return -EINVAL;
 400
 401        dev->pcmcia_map.bankwidth = t->geo[0].buswidth;
 402        /* from here on: DEBUG only */
 403        for (i = 0; i < t->ngeo; i++) {
 404                pr_debug("region: %d bankwidth = %u\n", i, t->geo[i].buswidth);
 405                pr_debug("region: %d erase_block = %u\n", i, t->geo[i].erase_block);
 406                pr_debug("region: %d read_block = %u\n", i, t->geo[i].read_block);
 407                pr_debug("region: %d write_block = %u\n", i, t->geo[i].write_block);
 408                pr_debug("region: %d partition = %u\n", i, t->geo[i].partition);
 409                pr_debug("region: %d interleave = %u\n", i, t->geo[i].interleave);
 410        }
 411        return 0;
 412}
 413
 414
 415static void card_settings(struct pcmciamtd_dev *dev, struct pcmcia_device *p_dev, int *new_name)
 416{
 417        int i;
 418
 419        if (p_dev->prod_id[0]) {
 420                dev->mtd_name[0] = '\0';
 421                for (i = 0; i < 4; i++) {
 422                        if (i)
 423                                strcat(dev->mtd_name, " ");
 424                        if (p_dev->prod_id[i])
 425                                strcat(dev->mtd_name, p_dev->prod_id[i]);
 426                }
 427                pr_debug("Found name: %s\n", dev->mtd_name);
 428        }
 429
 430        pcmcia_loop_tuple(p_dev, CISTPL_FORMAT, pcmciamtd_cistpl_format, NULL);
 431        pcmcia_loop_tuple(p_dev, CISTPL_JEDEC_C, pcmciamtd_cistpl_jedec, NULL);
 432        pcmcia_loop_tuple(p_dev, CISTPL_DEVICE, pcmciamtd_cistpl_device, dev);
 433        pcmcia_loop_tuple(p_dev, CISTPL_DEVICE_GEO, pcmciamtd_cistpl_geo, dev);
 434
 435        if(!dev->pcmcia_map.size)
 436                dev->pcmcia_map.size = MAX_PCMCIA_ADDR;
 437
 438        if(!dev->pcmcia_map.bankwidth)
 439                dev->pcmcia_map.bankwidth = 2;
 440
 441        if(force_size) {
 442                dev->pcmcia_map.size = force_size << 20;
 443                pr_debug("size forced to %dM\n", force_size);
 444        }
 445
 446        if(bankwidth) {
 447                dev->pcmcia_map.bankwidth = bankwidth;
 448                pr_debug("bankwidth forced to %d\n", bankwidth);
 449        }
 450
 451        dev->pcmcia_map.name = dev->mtd_name;
 452        if(!dev->mtd_name[0]) {
 453                strcpy(dev->mtd_name, "PCMCIA Memory card");
 454                *new_name = 1;
 455        }
 456
 457        pr_debug("Device: Size: %lu Width:%d Name: %s\n",
 458              dev->pcmcia_map.size,
 459              dev->pcmcia_map.bankwidth << 3, dev->mtd_name);
 460}
 461
 462
 463static int pcmciamtd_config(struct pcmcia_device *link)
 464{
 465        struct pcmciamtd_dev *dev = link->priv;
 466        struct mtd_info *mtd = NULL;
 467        int ret;
 468        int i, j = 0;
 469        static char *probes[] = { "jedec_probe", "cfi_probe" };
 470        int new_name = 0;
 471
 472        pr_debug("link=0x%p\n", link);
 473
 474        card_settings(dev, link, &new_name);
 475
 476        dev->pcmcia_map.phys = NO_XIP;
 477        dev->pcmcia_map.copy_from = pcmcia_copy_from_remap;
 478        dev->pcmcia_map.copy_to = pcmcia_copy_to_remap;
 479        if (dev->pcmcia_map.bankwidth == 1) {
 480                dev->pcmcia_map.read = pcmcia_read8_remap;
 481                dev->pcmcia_map.write = pcmcia_write8_remap;
 482        } else {
 483                dev->pcmcia_map.read = pcmcia_read16_remap;
 484                dev->pcmcia_map.write = pcmcia_write16_remap;
 485        }
 486        if(setvpp == 1)
 487                dev->pcmcia_map.set_vpp = pcmciamtd_set_vpp;
 488
 489        /* Request a memory window for PCMCIA. Some architeures can map windows
 490         * up to the maximum that PCMCIA can support (64MiB) - this is ideal and
 491         * we aim for a window the size of the whole card - otherwise we try
 492         * smaller windows until we succeed
 493         */
 494
 495        link->resource[2]->flags |=  WIN_MEMORY_TYPE_CM | WIN_ENABLE;
 496        link->resource[2]->flags |= (dev->pcmcia_map.bankwidth == 1) ?
 497                                        WIN_DATA_WIDTH_8 : WIN_DATA_WIDTH_16;
 498        link->resource[2]->start = 0;
 499        link->resource[2]->end = (force_size) ? force_size << 20 :
 500                                        MAX_PCMCIA_ADDR;
 501        dev->win_size = 0;
 502
 503        do {
 504                int ret;
 505                pr_debug("requesting window with size = %luKiB memspeed = %d\n",
 506                        (unsigned long) resource_size(link->resource[2]) >> 10,
 507                        mem_speed);
 508                ret = pcmcia_request_window(link, link->resource[2], mem_speed);
 509                pr_debug("ret = %d dev->win_size = %d\n", ret, dev->win_size);
 510                if(ret) {
 511                        j++;
 512                        link->resource[2]->start = 0;
 513                        link->resource[2]->end = (force_size) ?
 514                                        force_size << 20 : MAX_PCMCIA_ADDR;
 515                        link->resource[2]->end >>= j;
 516                } else {
 517                        pr_debug("Got window of size %luKiB\n", (unsigned long)
 518                                resource_size(link->resource[2]) >> 10);
 519                        dev->win_size = resource_size(link->resource[2]);
 520                        break;
 521                }
 522        } while (link->resource[2]->end >= 0x1000);
 523
 524        pr_debug("dev->win_size = %d\n", dev->win_size);
 525
 526        if(!dev->win_size) {
 527                dev_err(&dev->p_dev->dev, "Cannot allocate memory window\n");
 528                pcmciamtd_release(link);
 529                return -ENODEV;
 530        }
 531        pr_debug("Allocated a window of %dKiB\n", dev->win_size >> 10);
 532
 533        /* Get write protect status */
 534        dev->win_base = ioremap(link->resource[2]->start,
 535                                resource_size(link->resource[2]));
 536        if(!dev->win_base) {
 537                dev_err(&dev->p_dev->dev, "ioremap(%pR) failed\n",
 538                        link->resource[2]);
 539                pcmciamtd_release(link);
 540                return -ENODEV;
 541        }
 542        pr_debug("mapped window dev = %p @ %pR, base = %p\n",
 543              dev, link->resource[2], dev->win_base);
 544
 545        dev->offset = 0;
 546        dev->pcmcia_map.map_priv_1 = (unsigned long)dev;
 547        dev->pcmcia_map.map_priv_2 = (unsigned long)link->resource[2];
 548
 549        dev->vpp = (vpp) ? vpp : link->socket->socket.Vpp;
 550        if(setvpp == 2) {
 551                link->vpp = dev->vpp;
 552        } else {
 553                link->vpp = 0;
 554        }
 555
 556        link->config_index = 0;
 557        pr_debug("Setting Configuration\n");
 558        ret = pcmcia_enable_device(link);
 559        if (ret != 0) {
 560                if (dev->win_base) {
 561                        iounmap(dev->win_base);
 562                        dev->win_base = NULL;
 563                }
 564                return -ENODEV;
 565        }
 566
 567        if(mem_type == 1) {
 568                mtd = do_map_probe("map_ram", &dev->pcmcia_map);
 569        } else if(mem_type == 2) {
 570                mtd = do_map_probe("map_rom", &dev->pcmcia_map);
 571        } else {
 572                for(i = 0; i < ARRAY_SIZE(probes); i++) {
 573                        pr_debug("Trying %s\n", probes[i]);
 574                        mtd = do_map_probe(probes[i], &dev->pcmcia_map);
 575                        if(mtd)
 576                                break;
 577
 578                        pr_debug("FAILED: %s\n", probes[i]);
 579                }
 580        }
 581
 582        if(!mtd) {
 583                pr_debug("Can not find an MTD\n");
 584                pcmciamtd_release(link);
 585                return -ENODEV;
 586        }
 587
 588        dev->mtd_info = mtd;
 589        mtd->owner = THIS_MODULE;
 590
 591        if(new_name) {
 592                int size = 0;
 593                char unit = ' ';
 594                /* Since we are using a default name, make it better by adding
 595                 * in the size
 596                 */
 597                if(mtd->size < 1048576) { /* <1MiB in size, show size in KiB */
 598                        size = mtd->size >> 10;
 599                        unit = 'K';
 600                } else {
 601                        size = mtd->size >> 20;
 602                        unit = 'M';
 603                }
 604                snprintf(dev->mtd_name, sizeof(dev->mtd_name), "%d%ciB %s", size, unit, "PCMCIA Memory card");
 605        }
 606
 607        /* If the memory found is fits completely into the mapped PCMCIA window,
 608           use the faster non-remapping read/write functions */
 609        if(mtd->size <= dev->win_size) {
 610                pr_debug("Using non remapping memory functions\n");
 611                dev->pcmcia_map.map_priv_2 = (unsigned long)dev->win_base;
 612                if (dev->pcmcia_map.bankwidth == 1) {
 613                        dev->pcmcia_map.read = pcmcia_read8;
 614                        dev->pcmcia_map.write = pcmcia_write8;
 615                } else {
 616                        dev->pcmcia_map.read = pcmcia_read16;
 617                        dev->pcmcia_map.write = pcmcia_write16;
 618                }
 619                dev->pcmcia_map.copy_from = pcmcia_copy_from;
 620                dev->pcmcia_map.copy_to = pcmcia_copy_to;
 621        }
 622
 623        if (mtd_device_register(mtd, NULL, 0)) {
 624                map_destroy(mtd);
 625                dev->mtd_info = NULL;
 626                dev_err(&dev->p_dev->dev,
 627                        "Could not register the MTD device\n");
 628                pcmciamtd_release(link);
 629                return -ENODEV;
 630        }
 631        dev_info(&dev->p_dev->dev, "mtd%d: %s\n", mtd->index, mtd->name);
 632        return 0;
 633}
 634
 635
 636static int pcmciamtd_suspend(struct pcmcia_device *dev)
 637{
 638        pr_debug("EVENT_PM_RESUME\n");
 639
 640        /* get_lock(link); */
 641
 642        return 0;
 643}
 644
 645static int pcmciamtd_resume(struct pcmcia_device *dev)
 646{
 647        pr_debug("EVENT_PM_SUSPEND\n");
 648
 649        /* free_lock(link); */
 650
 651        return 0;
 652}
 653
 654
 655static void pcmciamtd_detach(struct pcmcia_device *link)
 656{
 657        struct pcmciamtd_dev *dev = link->priv;
 658
 659        pr_debug("link=0x%p\n", link);
 660
 661        if(dev->mtd_info) {
 662                mtd_device_unregister(dev->mtd_info);
 663                dev_info(&dev->p_dev->dev, "mtd%d: Removing\n",
 664                         dev->mtd_info->index);
 665                map_destroy(dev->mtd_info);
 666        }
 667
 668        pcmciamtd_release(link);
 669}
 670
 671
 672static int pcmciamtd_probe(struct pcmcia_device *link)
 673{
 674        struct pcmciamtd_dev *dev;
 675
 676        /* Create new memory card device */
 677        dev = kzalloc(sizeof(*dev), GFP_KERNEL);
 678        if (!dev) return -ENOMEM;
 679        pr_debug("dev=0x%p\n", dev);
 680
 681        dev->p_dev = link;
 682        link->priv = dev;
 683
 684        return pcmciamtd_config(link);
 685}
 686
 687static const struct pcmcia_device_id pcmciamtd_ids[] = {
 688        PCMCIA_DEVICE_FUNC_ID(1),
 689        PCMCIA_DEVICE_PROD_ID123("IO DATA", "PCS-2M", "2MB SRAM", 0x547e66dc, 0x1fed36cd, 0x36eadd21),
 690        PCMCIA_DEVICE_PROD_ID12("IBM", "2MB SRAM", 0xb569a6e5, 0x36eadd21),
 691        PCMCIA_DEVICE_PROD_ID12("IBM", "4MB FLASH", 0xb569a6e5, 0x8bc54d2a),
 692        PCMCIA_DEVICE_PROD_ID12("IBM", "8MB FLASH", 0xb569a6e5, 0x6df1be3e),
 693        PCMCIA_DEVICE_PROD_ID12("Intel", "S2E20SW", 0x816cc815, 0xd14c9dcf),
 694        PCMCIA_DEVICE_PROD_ID12("Intel", "S2E8 SW", 0x816cc815, 0xa2d7dedb),
 695        PCMCIA_DEVICE_PROD_ID12("intel", "SERIES2-02 ", 0x40ade711, 0x145cea5c),
 696        PCMCIA_DEVICE_PROD_ID12("intel", "SERIES2-04 ", 0x40ade711, 0x42064dda),
 697        PCMCIA_DEVICE_PROD_ID12("intel", "SERIES2-20 ", 0x40ade711, 0x25ee5cb0),
 698        PCMCIA_DEVICE_PROD_ID12("intel", "VALUE SERIES 100 ", 0x40ade711, 0xdf8506d8),
 699        PCMCIA_DEVICE_PROD_ID12("KINGMAX TECHNOLOGY INC.", "SRAM 256K Bytes", 0x54d0c69c, 0xad12c29c),
 700        PCMCIA_DEVICE_PROD_ID12("Maxtor", "MAXFL MobileMax Flash Memory Card", 0xb68968c8, 0x2dfb47b0),
 701        PCMCIA_DEVICE_PROD_ID123("M-Systems", "M-SYS Flash Memory Card", "(c) M-Systems", 0x7ed2ad87, 0x675dc3fb, 0x7aef3965),
 702        PCMCIA_DEVICE_PROD_ID12("PRETEC", "  2MB SRAM CARD", 0xebf91155, 0x805360ca),
 703        PCMCIA_DEVICE_PROD_ID12("SEIKO EPSON", "WWB101EN20", 0xf9876baf, 0xad0b207b),
 704        PCMCIA_DEVICE_PROD_ID12("SEIKO EPSON", "WWB513EN20", 0xf9876baf, 0xe8d884ad),
 705        PCMCIA_DEVICE_PROD_ID12("SMART Modular Technologies", " 4MB FLASH Card", 0x96fd8277, 0x737a5b05),
 706        PCMCIA_DEVICE_PROD_ID12("Starfish, Inc.", "REX-3000", 0x05ddca47, 0xe7d67bca),
 707        PCMCIA_DEVICE_PROD_ID12("Starfish, Inc.", "REX-4100", 0x05ddca47, 0x7bc32944),
 708        /* the following was commented out in pcmcia-cs-3.2.7 */
 709        /* PCMCIA_DEVICE_PROD_ID12("RATOC Systems,Inc.", "SmartMedia ADAPTER PC Card", 0xf4a2fefe, 0x5885b2ae), */
 710#ifdef CONFIG_MTD_PCMCIA_ANONYMOUS
 711        { .match_flags = PCMCIA_DEV_ID_MATCH_ANONYMOUS, },
 712#endif
 713        PCMCIA_DEVICE_NULL
 714};
 715MODULE_DEVICE_TABLE(pcmcia, pcmciamtd_ids);
 716
 717static struct pcmcia_driver pcmciamtd_driver = {
 718        .name           = "pcmciamtd",
 719        .probe          = pcmciamtd_probe,
 720        .remove         = pcmciamtd_detach,
 721        .owner          = THIS_MODULE,
 722        .id_table       = pcmciamtd_ids,
 723        .suspend        = pcmciamtd_suspend,
 724        .resume         = pcmciamtd_resume,
 725};
 726
 727
 728static int __init init_pcmciamtd(void)
 729{
 730        if(bankwidth && bankwidth != 1 && bankwidth != 2) {
 731                info("bad bankwidth (%d), using default", bankwidth);
 732                bankwidth = 2;
 733        }
 734        if(force_size && (force_size < 1 || force_size > 64)) {
 735                info("bad force_size (%d), using default", force_size);
 736                force_size = 0;
 737        }
 738        if(mem_type && mem_type != 1 && mem_type != 2) {
 739                info("bad mem_type (%d), using default", mem_type);
 740                mem_type = 0;
 741        }
 742        return pcmcia_register_driver(&pcmciamtd_driver);
 743}
 744
 745
 746static void __exit exit_pcmciamtd(void)
 747{
 748        pr_debug(DRIVER_DESC " unloading");
 749        pcmcia_unregister_driver(&pcmciamtd_driver);
 750}
 751
 752module_init(init_pcmciamtd);
 753module_exit(exit_pcmciamtd);
 754