SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/memstick/core/mspro_block.c

   1 /*
   2  *  Sony MemoryStick Pro storage support
   3  *
   4  *  Copyright (C) 2007 Alex Dubov <oakad@yahoo.com>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  *
  10  * Special thanks to Carlos Corbacho for providing various MemoryStick cards
  11  * that made this driver possible.
  12  *
  13  */
  14
  15 #include <linux/blkdev.h>
  16 #include <linux/idr.h>
  17 #include <linux/hdreg.h>
  18 #include <linux/kthread.h>
  19 #include <linux/delay.h>
  20 #include <linux/memstick.h>
  21
  22 #define DRIVER_NAME "mspro_block"
  23
  24 static int major;
  25 module_param(major, int, 0644);
  26
  27 #define MSPRO_BLOCK_MAX_SEGS  32
  28 #define MSPRO_BLOCK_MAX_PAGES ((2 << 16) - 1)
  29
  30 #define MSPRO_BLOCK_SIGNATURE        0xa5c3
  31 #define MSPRO_BLOCK_MAX_ATTRIBUTES   41
  32
  33 #define MSPRO_BLOCK_PART_SHIFT 3
  34
  35 enum {
  36         MSPRO_BLOCK_ID_SYSINFO         = 0x10,
  37         MSPRO_BLOCK_ID_MODELNAME       = 0x15,
  38         MSPRO_BLOCK_ID_MBR             = 0x20,
  39         MSPRO_BLOCK_ID_PBR16           = 0x21,
  40         MSPRO_BLOCK_ID_PBR32           = 0x22,
  41         MSPRO_BLOCK_ID_SPECFILEVALUES1 = 0x25,
  42         MSPRO_BLOCK_ID_SPECFILEVALUES2 = 0x26,
  43         MSPRO_BLOCK_ID_DEVINFO         = 0x30
  44 };
  45
  46 struct mspro_sys_attr {
  47         size_t                  size;
  48         void                    *data;
  49         unsigned char           id;
  50         char                    name[32];
  51         struct device_attribute dev_attr;
  52 };
  53
  54 struct mspro_attr_entry {
  55         __be32 address;
  56         __be32 size;
  57         unsigned char id;
  58         unsigned char reserved[3];
  59 } __attribute__((packed));
  60
  61 struct mspro_attribute {
  62         __be16 signature;
  63         unsigned short          version;
  64         unsigned char           count;
  65         unsigned char           reserved[11];
  66         struct mspro_attr_entry entries[];
  67 } __attribute__((packed));
  68
  69 struct mspro_sys_info {
  70         unsigned char  class;
  71         unsigned char  reserved0;
  72         __be16 block_size;
  73         __be16 block_count;
  74         __be16 user_block_count;
  75         __be16 page_size;
  76         unsigned char  reserved1[2];
  77         unsigned char  assembly_date[8];
  78         __be32 serial_number;
  79         unsigned char  assembly_maker_code;
  80         unsigned char  assembly_model_code[3];
  81         __be16 memory_maker_code;
  82         __be16 memory_model_code;
  83         unsigned char  reserved2[4];
  84         unsigned char  vcc;
  85         unsigned char  vpp;
  86         __be16 controller_number;
  87         __be16 controller_function;
  88         __be16 start_sector;
  89         __be16 unit_size;
  90         unsigned char  ms_sub_class;
  91         unsigned char  reserved3[4];
  92         unsigned char  interface_type;
  93         __be16 controller_code;
  94         unsigned char  format_type;
  95         unsigned char  reserved4;
  96         unsigned char  device_type;
  97         unsigned char  reserved5[7];
  98         unsigned char  mspro_id[16];
  99         unsigned char  reserved6[16];
 100 } __attribute__((packed));
 101
 102 struct mspro_mbr {
 103         unsigned char boot_partition;
 104         unsigned char start_head;
 105         unsigned char start_sector;
 106         unsigned char start_cylinder;
 107         unsigned char partition_type;
 108         unsigned char end_head;
 109         unsigned char end_sector;
 110         unsigned char end_cylinder;
 111         unsigned int  start_sectors;
 112         unsigned int  sectors_per_partition;
 113 } __attribute__((packed));
 114
 115 struct mspro_specfile {
 116         char           name[8];
 117         char           ext[3];
 118         unsigned char  attr;
 119         unsigned char  reserved[10];
 120         unsigned short time;
 121         unsigned short date;
 122         unsigned short cluster;
 123         unsigned int   size;
 124 } __attribute__((packed));
 125
 126 struct mspro_devinfo {
 127         __be16 cylinders;
 128         __be16 heads;
 129         __be16 bytes_per_track;
 130         __be16 bytes_per_sector;
 131         __be16 sectors_per_track;
 132         unsigned char  reserved[6];
 133 } __attribute__((packed));
 134
 135 struct mspro_block_data {
 136         struct memstick_dev   *card;
 137         unsigned int          usage_count;
 138         unsigned int          caps;
 139         struct gendisk        *disk;
 140         struct request_queue  *queue;
 141         struct request        *block_req;
 142         spinlock_t            q_lock;
 143
 144         unsigned short        page_size;
 145         unsigned short        cylinders;
 146         unsigned short        heads;
 147         unsigned short        sectors_per_track;
 148
 149         unsigned char         system;
 150         unsigned char         read_only:1,
 151                               eject:1,
 152                               has_request:1,
 153                               data_dir:1,
 154                               active:1;
 155         unsigned char         transfer_cmd;
 156
 157         int                   (*mrq_handler)(struct memstick_dev *card,
 158                                              struct memstick_request **mrq);
 159
 160         struct attribute_group attr_group;
 161
 162         struct scatterlist    req_sg[MSPRO_BLOCK_MAX_SEGS];
 163         unsigned int          seg_count;
 164         unsigned int          current_seg;
 165         unsigned int          current_page;
 166 };
 167
 168 static DEFINE_IDR(mspro_block_disk_idr);
 169 static DEFINE_MUTEX(mspro_block_disk_lock);
 170
 171 static int mspro_block_complete_req(struct memstick_dev *card, int error);
 172
 173 /*** Block device ***/
 174
 175 static int mspro_block_bd_open(struct block_device *bdev, fmode_t mode)
 176 {
 177         struct gendisk *disk = bdev->bd_disk;
 178         struct mspro_block_data *msb = disk->private_data;
 179         int rc = -ENXIO;
 180
 181         mutex_lock(&mspro_block_disk_lock);
 182
 183         if (msb && msb->card) {
 184                 msb->usage_count++;
 185                 if ((mode & FMODE_WRITE) && msb->read_only)
 186                         rc = -EROFS;
 187                 else
 188                         rc = 0;
 189         }
 190
 191         mutex_unlock(&mspro_block_disk_lock);
 192
 193         return rc;
 194 }
 195
 196
 197 static int mspro_block_disk_release(struct gendisk *disk)
 198 {
 199         struct mspro_block_data *msb = disk->private_data;
 200         int disk_id = MINOR(disk_devt(disk)) >> MSPRO_BLOCK_PART_SHIFT;
 201
 202         mutex_lock(&mspro_block_disk_lock);
 203
 204         if (msb) {
 205                 if (msb->usage_count)
 206                         msb->usage_count--;
 207
 208                 if (!msb->usage_count) {
 209                         kfree(msb);
 210                         disk->private_data = NULL;
 211                         idr_remove(&mspro_block_disk_idr, disk_id);
 212                         put_disk(disk);
 213                 }
 214         }
 215
 216         mutex_unlock(&mspro_block_disk_lock);
 217
 218         return 0;
 219 }
 220
 221 static int mspro_block_bd_release(struct gendisk *disk, fmode_t mode)
 222 {
 223         return mspro_block_disk_release(disk);
 224 }
 225
 226 static int mspro_block_bd_getgeo(struct block_device *bdev,
 227                                  struct hd_geometry *geo)
 228 {
 229         struct mspro_block_data *msb = bdev->bd_disk->private_data;
 230
 231         geo->heads = msb->heads;
 232         geo->sectors = msb->sectors_per_track;
 233         geo->cylinders = msb->cylinders;
 234
 235         return 0;
 236 }
 237
 238 static struct block_device_operations ms_block_bdops = {
 239         .open    = mspro_block_bd_open,
 240         .release = mspro_block_bd_release,
 241         .getgeo  = mspro_block_bd_getgeo,
 242         .owner   = THIS_MODULE
 243 };
 244
 245 /*** Information ***/
 246
 247 static struct mspro_sys_attr *mspro_from_sysfs_attr(struct attribute *attr)
 248 {
 249         struct device_attribute *dev_attr
 250                 = container_of(attr, struct device_attribute, attr);
 251         return container_of(dev_attr, struct mspro_sys_attr, dev_attr);
 252 }
 253
 254 static const char *mspro_block_attr_name(unsigned char tag)
 255 {
 256         switch (tag) {
 257         case MSPRO_BLOCK_ID_SYSINFO:
 258                 return "attr_sysinfo";
 259         case MSPRO_BLOCK_ID_MODELNAME:
 260                 return "attr_modelname";
 261         case MSPRO_BLOCK_ID_MBR:
 262                 return "attr_mbr";
 263         case MSPRO_BLOCK_ID_PBR16:
 264                 return "attr_pbr16";
 265         case MSPRO_BLOCK_ID_PBR32:
 266                 return "attr_pbr32";
 267         case MSPRO_BLOCK_ID_SPECFILEVALUES1:
 268                 return "attr_specfilevalues1";
 269         case MSPRO_BLOCK_ID_SPECFILEVALUES2:
 270                 return "attr_specfilevalues2";
 271         case MSPRO_BLOCK_ID_DEVINFO:
 272                 return "attr_devinfo";
 273         default:
 274                 return NULL;
 275         };
 276 }
 277
 278 typedef ssize_t (*sysfs_show_t)(struct device *dev,
 279                                 struct device_attribute *attr,
 280                                 char *buffer);
 281
 282 static ssize_t mspro_block_attr_show_default(struct device *dev,
 283                                              struct device_attribute *attr,
 284                                              char *buffer)
 285 {
 286         struct mspro_sys_attr *s_attr = container_of(attr,
 287                                                      struct mspro_sys_attr,
 288                                                      dev_attr);
 289
 290         ssize_t cnt, rc = 0;
 291
 292         for (cnt = 0; cnt < s_attr->size; cnt++) {
 293                 if (cnt && !(cnt % 16)) {
 294                         if (PAGE_SIZE - rc)
 295                                 buffer[rc++] = '\n';
 296                 }
 297
 298                 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "%02x ",
 299                                 ((unsigned char *)s_attr->data)[cnt]);
 300         }
 301         return rc;
 302 }
 303
 304 static ssize_t mspro_block_attr_show_sysinfo(struct device *dev,
 305                                              struct device_attribute *attr,
 306                                              char *buffer)
 307 {
 308         struct mspro_sys_attr *x_attr = container_of(attr,
 309                                                      struct mspro_sys_attr,
 310                                                      dev_attr);
 311         struct mspro_sys_info *x_sys = x_attr->data;
 312         ssize_t rc = 0;
 313         int date_tz = 0, date_tz_f = 0;
 314
 315         if (x_sys->assembly_date[0] > 0x80U) {
 316                 date_tz = (~x_sys->assembly_date[0]) + 1;
 317                 date_tz_f = date_tz & 3;
 318                 date_tz >>= 2;
 319                 date_tz = -date_tz;
 320                 date_tz_f *= 15;
 321         } else if (x_sys->assembly_date[0] < 0x80U) {
 322                 date_tz = x_sys->assembly_date[0];
 323                 date_tz_f = date_tz & 3;
 324                 date_tz >>= 2;
 325                 date_tz_f *= 15;
 326         }
 327
 328         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "class: %x\n",
 329                         x_sys->class);
 330         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "block size: %x\n",
 331                         be16_to_cpu(x_sys->block_size));
 332         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "block count: %x\n",
 333                         be16_to_cpu(x_sys->block_count));
 334         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "user block count: %x\n",
 335                         be16_to_cpu(x_sys->user_block_count));
 336         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "page size: %x\n",
 337                         be16_to_cpu(x_sys->page_size));
 338         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "assembly date: "
 339                         "GMT%+d:%d %04u-%02u-%02u %02u:%02u:%02u\n",
 340                         date_tz, date_tz_f,
 341                         be16_to_cpup((__be16 *)&x_sys->assembly_date[1]),
 342                         x_sys->assembly_date[3], x_sys->assembly_date[4],
 343                         x_sys->assembly_date[5], x_sys->assembly_date[6],
 344                         x_sys->assembly_date[7]);
 345         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "serial number: %x\n",
 346                         be32_to_cpu(x_sys->serial_number));
 347         rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
 348                         "assembly maker code: %x\n",
 349                         x_sys->assembly_maker_code);
 350         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "assembly model code: "
 351                         "%02x%02x%02x\n", x_sys->assembly_model_code[0],
 352                         x_sys->assembly_model_code[1],
 353                         x_sys->assembly_model_code[2]);
 354         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "memory maker code: %x\n",
 355                         be16_to_cpu(x_sys->memory_maker_code));
 356         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "memory model code: %x\n",
 357                         be16_to_cpu(x_sys->memory_model_code));
 358         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "vcc: %x\n",
 359                         x_sys->vcc);
 360         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "vpp: %x\n",
 361                         x_sys->vpp);
 362         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "controller number: %x\n",
 363                         be16_to_cpu(x_sys->controller_number));
 364         rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
 365                         "controller function: %x\n",
 366                         be16_to_cpu(x_sys->controller_function));
 367         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sector: %x\n",
 368                         be16_to_cpu(x_sys->start_sector));
 369         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "unit size: %x\n",
 370                         be16_to_cpu(x_sys->unit_size));
 371         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "sub class: %x\n",
 372                         x_sys->ms_sub_class);
 373         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "interface type: %x\n",
 374                         x_sys->interface_type);
 375         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "controller code: %x\n",
 376                         be16_to_cpu(x_sys->controller_code));
 377         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "format type: %x\n",
 378                         x_sys->format_type);
 379         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "device type: %x\n",
 380                         x_sys->device_type);
 381         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "mspro id: %s\n",
 382                         x_sys->mspro_id);
 383         return rc;
 384 }
 385
 386 static ssize_t mspro_block_attr_show_modelname(struct device *dev,
 387                                                struct device_attribute *attr,
 388                                                char *buffer)
 389 {
 390         struct mspro_sys_attr *s_attr = container_of(attr,
 391                                                      struct mspro_sys_attr,
 392                                                      dev_attr);
 393
 394         return scnprintf(buffer, PAGE_SIZE, "%s", (char *)s_attr->data);
 395 }
 396
 397 static ssize_t mspro_block_attr_show_mbr(struct device *dev,
 398                                          struct device_attribute *attr,
 399                                          char *buffer)
 400 {
 401         struct mspro_sys_attr *x_attr = container_of(attr,
 402                                                      struct mspro_sys_attr,
 403                                                      dev_attr);
 404         struct mspro_mbr *x_mbr = x_attr->data;
 405         ssize_t rc = 0;
 406
 407         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "boot partition: %x\n",
 408                         x_mbr->boot_partition);
 409         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start head: %x\n",
 410                         x_mbr->start_head);
 411         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sector: %x\n",
 412                         x_mbr->start_sector);
 413         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start cylinder: %x\n",
 414                         x_mbr->start_cylinder);
 415         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "partition type: %x\n",
 416                         x_mbr->partition_type);
 417         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end head: %x\n",
 418                         x_mbr->end_head);
 419         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end sector: %x\n",
 420                         x_mbr->end_sector);
 421         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end cylinder: %x\n",
 422                         x_mbr->end_cylinder);
 423         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sectors: %x\n",
 424                         x_mbr->start_sectors);
 425         rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
 426                         "sectors per partition: %x\n",
 427                         x_mbr->sectors_per_partition);
 428         return rc;
 429 }
 430
 431 static ssize_t mspro_block_attr_show_specfile(struct device *dev,
 432                                               struct device_attribute *attr,
 433                                               char *buffer)
 434 {
 435         struct mspro_sys_attr *x_attr = container_of(attr,
 436                                                      struct mspro_sys_attr,
 437                                                      dev_attr);
 438         struct mspro_specfile *x_spfile = x_attr->data;
 439         char name[9], ext[4];
 440         ssize_t rc = 0;
 441
 442         memcpy(name, x_spfile->name, 8);
 443         name[8] = 0;
 444         memcpy(ext, x_spfile->ext, 3);
 445         ext[3] = 0;
 446
 447         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "name: %s\n", name);
 448         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "ext: %s\n", ext);
 449         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "attribute: %x\n",
 450                         x_spfile->attr);
 451         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "time: %d:%d:%d\n",
 452                         x_spfile->time >> 11,
 453                         (x_spfile->time >> 5) & 0x3f,
 454                         (x_spfile->time & 0x1f) * 2);
 455         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "date: %d-%d-%d\n",
 456                         (x_spfile->date >> 9) + 1980,
 457                         (x_spfile->date >> 5) & 0xf,
 458                         x_spfile->date & 0x1f);
 459         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start cluster: %x\n",
 460                         x_spfile->cluster);
 461         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "size: %x\n",
 462                         x_spfile->size);
 463         return rc;
 464 }
 465
 466 static ssize_t mspro_block_attr_show_devinfo(struct device *dev,
 467                                              struct device_attribute *attr,
 468                                              char *buffer)
 469 {
 470         struct mspro_sys_attr *x_attr = container_of(attr,
 471                                                      struct mspro_sys_attr,
 472                                                      dev_attr);
 473         struct mspro_devinfo *x_devinfo = x_attr->data;
 474         ssize_t rc = 0;
 475
 476         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "cylinders: %x\n",
 477                         be16_to_cpu(x_devinfo->cylinders));
 478         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "heads: %x\n",
 479                         be16_to_cpu(x_devinfo->heads));
 480         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "bytes per track: %x\n",
 481                         be16_to_cpu(x_devinfo->bytes_per_track));
 482         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "bytes per sector: %x\n",
 483                         be16_to_cpu(x_devinfo->bytes_per_sector));
 484         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "sectors per track: %x\n",
 485                         be16_to_cpu(x_devinfo->sectors_per_track));
 486         return rc;
 487 }
 488
 489 static sysfs_show_t mspro_block_attr_show(unsigned char tag)
 490 {
 491         switch (tag) {
 492         case MSPRO_BLOCK_ID_SYSINFO:
 493                 return mspro_block_attr_show_sysinfo;
 494         case MSPRO_BLOCK_ID_MODELNAME:
 495                 return mspro_block_attr_show_modelname;
 496         case MSPRO_BLOCK_ID_MBR:
 497                 return mspro_block_attr_show_mbr;
 498         case MSPRO_BLOCK_ID_SPECFILEVALUES1:
 499         case MSPRO_BLOCK_ID_SPECFILEVALUES2:
 500                 return mspro_block_attr_show_specfile;
 501         case MSPRO_BLOCK_ID_DEVINFO:
 502                 return mspro_block_attr_show_devinfo;
 503         default:
 504                 return mspro_block_attr_show_default;
 505         }
 506 }
 507
 508 /*** Protocol handlers ***/
 509
 510 /*
 511  * Functions prefixed with "h_" are protocol callbacks. They can be called from
 512  * interrupt context. Return value of 0 means that request processing is still
 513  * ongoing, while special error value of -EAGAIN means that current request is
 514  * finished (and request processor should come back some time later).
 515  */
 516
 517 static int h_mspro_block_req_init(struct memstick_dev *card,
 518                                   struct memstick_request **mrq)
 519 {
 520         struct mspro_block_data *msb = memstick_get_drvdata(card);
 521
 522         *mrq = &card->current_mrq;
 523         card->next_request = msb->mrq_handler;
 524         return 0;
 525 }
 526
 527 static int h_mspro_block_default(struct memstick_dev *card,
 528                                  struct memstick_request **mrq)
 529 {
 530         return mspro_block_complete_req(card, (*mrq)->error);
 531 }
 532
 533 static int h_mspro_block_default_bad(struct memstick_dev *card,
 534                                      struct memstick_request **mrq)
 535 {
 536         return -ENXIO;
 537 }
 538
 539 static int h_mspro_block_get_ro(struct memstick_dev *card,
 540                                 struct memstick_request **mrq)
 541 {
 542         struct mspro_block_data *msb = memstick_get_drvdata(card);
 543
 544         if (!(*mrq)->error) {
 545                 if ((*mrq)->data[offsetof(struct ms_status_register, status0)]
 546                     & MEMSTICK_STATUS0_WP)
 547                         msb->read_only = 1;
 548                 else
 549                         msb->read_only = 0;
 550         }
 551
 552         return mspro_block_complete_req(card, (*mrq)->error);
 553 }
 554
 555 static int h_mspro_block_wait_for_ced(struct memstick_dev *card,
 556                                       struct memstick_request **mrq)
 557 {
 558         dev_dbg(&card->dev, "wait for ced: value %x\n", (*mrq)->data[0]);
 559
 560         if (!(*mrq)->error) {
 561                 if ((*mrq)->data[0] & (MEMSTICK_INT_CMDNAK | MEMSTICK_INT_ERR))
 562                         (*mrq)->error = -EFAULT;
 563                 else if (!((*mrq)->data[0] & MEMSTICK_INT_CED))
 564                         return 0;
 565         }
 566
 567         return mspro_block_complete_req(card, (*mrq)->error);
 568 }
 569
 570 static int h_mspro_block_transfer_data(struct memstick_dev *card,
 571                                        struct memstick_request **mrq)
 572 {
 573         struct mspro_block_data *msb = memstick_get_drvdata(card);
 574         unsigned char t_val = 0;
 575         struct scatterlist t_sg = { 0 };
 576         size_t t_offset;
 577
 578         if ((*mrq)->error)
 579                 return mspro_block_complete_req(card, (*mrq)->error);
 580
 581         switch ((*mrq)->tpc) {
 582         case MS_TPC_WRITE_REG:
 583                 memstick_init_req(*mrq, MS_TPC_SET_CMD, &msb->transfer_cmd, 1);
 584                 (*mrq)->need_card_int = 1;
 585                 return 0;
 586         case MS_TPC_SET_CMD:
 587                 t_val = (*mrq)->int_reg;
 588                 memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
 589                 if (msb->caps & MEMSTICK_CAP_AUTO_GET_INT)
 590                         goto has_int_reg;
 591                 return 0;
 592         case MS_TPC_GET_INT:
 593                 t_val = (*mrq)->data[0];
 594 has_int_reg:
 595                 if (t_val & (MEMSTICK_INT_CMDNAK | MEMSTICK_INT_ERR)) {
 596                         t_val = MSPRO_CMD_STOP;
 597                         memstick_init_req(*mrq, MS_TPC_SET_CMD, &t_val, 1);
 598                         card->next_request = h_mspro_block_default;
 599                         return 0;
 600                 }
 601
 602                 if (msb->current_page
 603                     == (msb->req_sg[msb->current_seg].length
 604                         / msb->page_size)) {
 605                         msb->current_page = 0;
 606                         msb->current_seg++;
 607
 608                         if (msb->current_seg == msb->seg_count) {
 609                                 if (t_val & MEMSTICK_INT_CED) {
 610                                         return mspro_block_complete_req(card,
 611                                                                         0);
 612                                 } else {
 613                                         card->next_request
 614                                                 = h_mspro_block_wait_for_ced;
 615                                         memstick_init_req(*mrq, MS_TPC_GET_INT,
 616                                                           NULL, 1);
 617                                         return 0;
 618                                 }
 619                         }
 620                 }
 621
 622                 if (!(t_val & MEMSTICK_INT_BREQ)) {
 623                         memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
 624                         return 0;
 625                 }
 626
 627                 t_offset = msb->req_sg[msb->current_seg].offset;
 628                 t_offset += msb->current_page * msb->page_size;
 629
 630                 sg_set_page(&t_sg,
 631                             nth_page(sg_page(&(msb->req_sg[msb->current_seg])),
 632                                      t_offset >> PAGE_SHIFT),
 633                             msb->page_size, offset_in_page(t_offset));
 634
 635                 memstick_init_req_sg(*mrq, msb->data_dir == READ
 636                                            ? MS_TPC_READ_LONG_DATA
 637                                            : MS_TPC_WRITE_LONG_DATA,
 638                                      &t_sg);
 639                 (*mrq)->need_card_int = 1;
 640                 return 0;
 641         case MS_TPC_READ_LONG_DATA:
 642         case MS_TPC_WRITE_LONG_DATA:
 643                 msb->current_page++;
 644                 if (msb->caps & MEMSTICK_CAP_AUTO_GET_INT) {
 645                         t_val = (*mrq)->int_reg;
 646                         goto has_int_reg;
 647                 } else {
 648                         memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
 649                         return 0;
 650                 }
 651
 652         default:
 653                 BUG();
 654         }
 655 }
 656
 657 /*** Data transfer ***/
 658
 659 static int mspro_block_issue_req(struct memstick_dev *card, int chunk)
 660 {
 661         struct mspro_block_data *msb = memstick_get_drvdata(card);
 662         sector_t t_sec;
 663         unsigned int count;
 664         struct mspro_param_register param;
 665
 666 try_again:
 667         while (chunk) {
 668                 msb->current_page = 0;
 669                 msb->current_seg = 0;
 670                 msb->seg_count = blk_rq_map_sg(msb->block_req->q,
 671                                                msb->block_req,
 672                                                msb->req_sg);
 673
 674                 if (!msb->seg_count) {
 675                         chunk = __blk_end_request_cur(msb->block_req, -ENOMEM);
 676                         continue;
 677                 }
 678
 679                 t_sec = blk_rq_pos(msb->block_req) << 9;
 680                 sector_div(t_sec, msb->page_size);
 681
 682                 count = blk_rq_bytes(msb->block_req);
 683                 count /= msb->page_size;
 684
 685                 param.system = msb->system;
 686                 param.data_count = cpu_to_be16(count);
 687                 param.data_address = cpu_to_be32((uint32_t)t_sec);
 688                 param.tpc_param = 0;
 689
 690                 msb->data_dir = rq_data_dir(msb->block_req);
 691                 msb->transfer_cmd = msb->data_dir == READ
 692                                     ? MSPRO_CMD_READ_DATA
 693                                     : MSPRO_CMD_WRITE_DATA;
 694
 695                 dev_dbg(&card->dev, "data transfer: cmd %x, "
 696                         "lba %x, count %x\n", msb->transfer_cmd,
 697                         be32_to_cpu(param.data_address), count);
 698
 699                 card->next_request = h_mspro_block_req_init;
 700                 msb->mrq_handler = h_mspro_block_transfer_data;
 701                 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG,
 702                                   &param, sizeof(param));
 703                 memstick_new_req(card->host);
 704                 return 0;
 705         }
 706
 707         dev_dbg(&card->dev, "elv_next\n");
 708         msb->block_req = elv_next_request(msb->queue);
 709         if (!msb->block_req) {
 710                 dev_dbg(&card->dev, "issue end\n");
 711                 return -EAGAIN;
 712         }
 713         blkdev_dequeue_request(msb->block_req);
 714
 715         dev_dbg(&card->dev, "trying again\n");
 716         chunk = 1;
 717         goto try_again;
 718 }
 719
 720 static int mspro_block_complete_req(struct memstick_dev *card, int error)
 721 {
 722         struct mspro_block_data *msb = memstick_get_drvdata(card);
 723         int chunk, cnt;
 724         unsigned int t_len = 0;
 725         unsigned long flags;
 726
 727         spin_lock_irqsave(&msb->q_lock, flags);
 728         dev_dbg(&card->dev, "complete %d, %d\n", msb->has_request ? 1 : 0,
 729                 error);
 730
 731         if (msb->has_request) {
 732                 /* Nothing to do - not really an error */
 733                 if (error == -EAGAIN)
 734                         error = 0;
 735
 736                 if (error || (card->current_mrq.tpc == MSPRO_CMD_STOP)) {
 737                         if (msb->data_dir == READ) {
 738                                 for (cnt = 0; cnt < msb->current_seg; cnt++)
 739                                         t_len += msb->req_sg[cnt].length
 740                                                  / msb->page_size;
 741
 742                                         if (msb->current_page)
 743                                                 t_len += msb->current_page - 1;
 744
 745                                         t_len *= msb->page_size;
 746                         }
 747                 } else
 748                         t_len = blk_rq_bytes(msb->block_req);
 749
 750                 dev_dbg(&card->dev, "transferred %x (%d)\n", t_len, error);
 751
 752                 if (error && !t_len)
 753                         t_len = blk_rq_cur_bytes(msb->block_req);
 754
 755                 chunk = __blk_end_request(msb->block_req, error, t_len);
 756
 757                 error = mspro_block_issue_req(card, chunk);
 758
 759                 if (!error)
 760                         goto out;
 761                 else
 762                         msb->has_request = 0;
 763         } else {
 764                 if (!error)
 765                         error = -EAGAIN;
 766         }
 767
 768         card->next_request = h_mspro_block_default_bad;
 769         complete_all(&card->mrq_complete);
 770 out:
 771         spin_unlock_irqrestore(&msb->q_lock, flags);
 772         return error;
 773 }
 774
 775 static void mspro_block_stop(struct memstick_dev *card)
 776 {
 777         struct mspro_block_data *msb = memstick_get_drvdata(card);
 778         int rc = 0;
 779         unsigned long flags;
 780
 781         while (1) {
 782                 spin_lock_irqsave(&msb->q_lock, flags);
 783                 if (!msb->has_request) {
 784                         blk_stop_queue(msb->queue);
 785                         rc = 1;
 786                 }
 787                 spin_unlock_irqrestore(&msb->q_lock, flags);
 788
 789                 if (rc)
 790                         break;
 791
 792                 wait_for_completion(&card->mrq_complete);
 793         }
 794 }
 795
 796 static void mspro_block_start(struct memstick_dev *card)
 797 {
 798         struct mspro_block_data *msb = memstick_get_drvdata(card);
 799         unsigned long flags;
 800
 801         spin_lock_irqsave(&msb->q_lock, flags);
 802         blk_start_queue(msb->queue);
 803         spin_unlock_irqrestore(&msb->q_lock, flags);
 804 }
 805
 806 static int mspro_block_prepare_req(struct request_queue *q, struct request *req)
 807 {
 808         if (!blk_fs_request(req) && !blk_pc_request(req)) {
 809                 blk_dump_rq_flags(req, "MSPro unsupported request");
 810                 return BLKPREP_KILL;
 811         }
 812
 813         req->cmd_flags |= REQ_DONTPREP;
 814
 815         return BLKPREP_OK;
 816 }
 817
 818 static void mspro_block_submit_req(struct request_queue *q)
 819 {
 820         struct memstick_dev *card = q->queuedata;
 821         struct mspro_block_data *msb = memstick_get_drvdata(card);
 822         struct request *req = NULL;
 823
 824         if (msb->has_request)
 825                 return;
 826
 827         if (msb->eject) {
 828                 while ((req = elv_next_request(q)) != NULL) {
 829                         blkdev_dequeue_request(req);
 830                         __blk_end_request_all(req, -ENODEV);
 831                 }
 832
 833                 return;
 834         }
 835
 836         msb->has_request = 1;
 837         if (mspro_block_issue_req(card, 0))
 838                 msb->has_request = 0;
 839 }
 840
 841 /*** Initialization ***/
 842
 843 static int mspro_block_wait_for_ced(struct memstick_dev *card)
 844 {
 845         struct mspro_block_data *msb = memstick_get_drvdata(card);
 846
 847         card->next_request = h_mspro_block_req_init;
 848         msb->mrq_handler = h_mspro_block_wait_for_ced;
 849         memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1);
 850         memstick_new_req(card->host);
 851         wait_for_completion(&card->mrq_complete);
 852         return card->current_mrq.error;
 853 }
 854
 855 static int mspro_block_set_interface(struct memstick_dev *card,
 856                                      unsigned char sys_reg)
 857 {
 858         struct memstick_host *host = card->host;
 859         struct mspro_block_data *msb = memstick_get_drvdata(card);
 860         struct mspro_param_register param = {
 861                 .system = sys_reg,
 862                 .data_count = 0,
 863                 .data_address = 0,
 864                 .tpc_param = 0
 865         };
 866
 867         card->next_request = h_mspro_block_req_init;
 868         msb->mrq_handler = h_mspro_block_default;
 869         memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, &param,
 870                           sizeof(param));
 871         memstick_new_req(host);
 872         wait_for_completion(&card->mrq_complete);
 873         return card->current_mrq.error;
 874 }
 875
 876 static int mspro_block_switch_interface(struct memstick_dev *card)
 877 {
 878         struct memstick_host *host = card->host;
 879         struct mspro_block_data *msb = memstick_get_drvdata(card);
 880         int rc = 0;
 881
 882 try_again:
 883         if (msb->caps & MEMSTICK_CAP_PAR4)
 884                 rc = mspro_block_set_interface(card, MEMSTICK_SYS_PAR4);
 885         else
 886                 return 0;
 887
 888         if (rc) {
 889                 printk(KERN_WARNING
 890                        "%s: could not switch to 4-bit mode, error %d\n",
 891                        dev_name(&card->dev), rc);
 892                 return 0;
 893         }
 894
 895         msb->system = MEMSTICK_SYS_PAR4;
 896         host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_PAR4);
 897         printk(KERN_INFO "%s: switching to 4-bit parallel mode\n",
 898                dev_name(&card->dev));
 899
 900         if (msb->caps & MEMSTICK_CAP_PAR8) {
 901                 rc = mspro_block_set_interface(card, MEMSTICK_SYS_PAR8);
 902
 903                 if (!rc) {
 904                         msb->system = MEMSTICK_SYS_PAR8;
 905                         host->set_param(host, MEMSTICK_INTERFACE,
 906                                         MEMSTICK_PAR8);
 907                         printk(KERN_INFO
 908                                "%s: switching to 8-bit parallel mode\n",
 909                                dev_name(&card->dev));
 910                 } else
 911                         printk(KERN_WARNING
 912                                "%s: could not switch to 8-bit mode, error %d\n",
 913                                dev_name(&card->dev), rc);
 914         }
 915
 916         card->next_request = h_mspro_block_req_init;
 917         msb->mrq_handler = h_mspro_block_default;
 918         memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1);
 919         memstick_new_req(card->host);
 920         wait_for_completion(&card->mrq_complete);
 921         rc = card->current_mrq.error;
 922
 923         if (rc) {
 924                 printk(KERN_WARNING
 925                        "%s: interface error, trying to fall back to serial\n",
 926                        dev_name(&card->dev));
 927                 msb->system = MEMSTICK_SYS_SERIAL;
 928                 host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_OFF);
 929                 msleep(10);
 930                 host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_ON);
 931                 host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_SERIAL);
 932
 933                 rc = memstick_set_rw_addr(card);
 934                 if (!rc)
 935                         rc = mspro_block_set_interface(card, msb->system);
 936
 937                 if (!rc) {
 938                         msleep(150);
 939                         rc = mspro_block_wait_for_ced(card);
 940                         if (rc)
 941                                 return rc;
 942
 943                         if (msb->caps & MEMSTICK_CAP_PAR8) {
 944                                 msb->caps &= ~MEMSTICK_CAP_PAR8;
 945                                 goto try_again;
 946                         }
 947                 }
 948         }
 949         return rc;
 950 }
 951
 952 /* Memory allocated for attributes by this function should be freed by
 953  * mspro_block_data_clear, no matter if the initialization process succeded
 954  * or failed.
 955  */
 956 static int mspro_block_read_attributes(struct memstick_dev *card)
 957 {
 958         struct mspro_block_data *msb = memstick_get_drvdata(card);
 959         struct mspro_param_register param = {
 960                 .system = msb->system,
 961                 .data_count = cpu_to_be16(1),
 962                 .data_address = 0,
 963                 .tpc_param = 0
 964         };
 965         struct mspro_attribute *attr = NULL;
 966         struct mspro_sys_attr *s_attr = NULL;
 967         unsigned char *buffer = NULL;
 968         int cnt, rc, attr_count;
 969         unsigned int addr;
 970         unsigned short page_count;
 971
 972         attr = kmalloc(msb->page_size, GFP_KERNEL);
 973         if (!attr)
 974                 return -ENOMEM;
 975
 976         sg_init_one(&msb->req_sg[0], attr, msb->page_size);
 977         msb->seg_count = 1;
 978         msb->current_seg = 0;
 979         msb->current_page = 0;
 980         msb->data_dir = READ;
 981         msb->transfer_cmd = MSPRO_CMD_READ_ATRB;
 982
 983         card->next_request = h_mspro_block_req_init;
 984         msb->mrq_handler = h_mspro_block_transfer_data;
 985         memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, &param,
 986                           sizeof(param));
 987         memstick_new_req(card->host);
 988         wait_for_completion(&card->mrq_complete);
 989         if (card->current_mrq.error) {
 990                 rc = card->current_mrq.error;
 991                 goto out_free_attr;
 992         }
 993
 994         if (be16_to_cpu(attr->signature) != MSPRO_BLOCK_SIGNATURE) {
 995                 printk(KERN_ERR "%s: unrecognized device signature %x\n",
 996                        dev_name(&card->dev), be16_to_cpu(attr->signature));
 997                 rc = -ENODEV;
 998                 goto out_free_attr;
 999         }
1000
1001         if (attr->count > MSPRO_BLOCK_MAX_ATTRIBUTES) {
1002                 printk(KERN_WARNING "%s: way too many attribute entries\n",
1003                        dev_name(&card->dev));
1004                 attr_count = MSPRO_BLOCK_MAX_ATTRIBUTES;
1005         } else
1006                 attr_count = attr->count;
1007
1008         msb->attr_group.attrs = kzalloc((attr_count + 1)
1009                                         * sizeof(struct attribute),
1010                                         GFP_KERNEL);
1011         if (!msb->attr_group.attrs) {
1012                 rc = -ENOMEM;
1013                 goto out_free_attr;
1014         }
1015         msb->attr_group.name = "media_attributes";
1016
1017         buffer = kmalloc(msb->page_size, GFP_KERNEL);
1018         if (!buffer) {
1019                 rc = -ENOMEM;
1020                 goto out_free_attr;
1021         }
1022         memcpy(buffer, (char *)attr, msb->page_size);
1023         page_count = 1;
1024
1025         for (cnt = 0; cnt < attr_count; ++cnt) {
1026                 s_attr = kzalloc(sizeof(struct mspro_sys_attr), GFP_KERNEL);
1027                 if (!s_attr) {
1028                         rc = -ENOMEM;
1029                         goto out_free_buffer;
1030                 }
1031
1032                 msb->attr_group.attrs[cnt] = &s_attr->dev_attr.attr;
1033                 addr = be32_to_cpu(attr->entries[cnt].address);
1034                 rc = be32_to_cpu(attr->entries[cnt].size);
1035                 dev_dbg(&card->dev, "adding attribute %d: id %x, address %x, "
1036                         "size %x\n", cnt, attr->entries[cnt].id, addr, rc);
1037                 s_attr->id = attr->entries[cnt].id;
1038                 if (mspro_block_attr_name(s_attr->id))
1039                         snprintf(s_attr->name, sizeof(s_attr->name), "%s",
1040                                  mspro_block_attr_name(attr->entries[cnt].id));
1041                 else
1042                         snprintf(s_attr->name, sizeof(s_attr->name),
1043                                  "attr_x%02x", attr->entries[cnt].id);
1044
1045                 s_attr->dev_attr.attr.name = s_attr->name;
1046                 s_attr->dev_attr.attr.mode = S_IRUGO;
1047                 s_attr->dev_attr.show = mspro_block_attr_show(s_attr->id);
1048
1049                 if (!rc)
1050                         continue;
1051
1052                 s_attr->size = rc;
1053                 s_attr->data = kmalloc(rc, GFP_KERNEL);
1054                 if (!s_attr->data) {
1055                         rc = -ENOMEM;
1056                         goto out_free_buffer;
1057                 }
1058
1059                 if (((addr / msb->page_size)
1060                      == be32_to_cpu(param.data_address))
1061                     && (((addr + rc - 1) / msb->page_size)
1062                         == be32_to_cpu(param.data_address))) {
1063                         memcpy(s_attr->data, buffer + addr % msb->page_size,
1064                                rc);
1065                         continue;
1066                 }
1067
1068                 if (page_count <= (rc / msb->page_size)) {
1069                         kfree(buffer);
1070                         page_count = (rc / msb->page_size) + 1;
1071                         buffer = kmalloc(page_count * msb->page_size,
1072                                          GFP_KERNEL);
1073                         if (!buffer) {
1074                                 rc = -ENOMEM;
1075                                 goto out_free_attr;
1076                         }
1077                 }
1078
1079                 param.system = msb->system;
1080                 param.data_count = cpu_to_be16((rc / msb->page_size) + 1);
1081                 param.data_address = cpu_to_be32(addr / msb->page_size);
1082                 param.tpc_param = 0;
1083
1084                 sg_init_one(&msb->req_sg[0], buffer,
1085                             be16_to_cpu(param.data_count) * msb->page_size);
1086                 msb->seg_count = 1;
1087                 msb->current_seg = 0;
1088                 msb->current_page = 0;
1089                 msb->data_dir = READ;
1090                 msb->transfer_cmd = MSPRO_CMD_READ_ATRB;
1091
1092                 dev_dbg(&card->dev, "reading attribute pages %x, %x\n",
1093                         be32_to_cpu(param.data_address),
1094                         be16_to_cpu(param.data_count));
1095
1096                 card->next_request = h_mspro_block_req_init;
1097                 msb->mrq_handler = h_mspro_block_transfer_data;
1098                 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG,
1099                                   (char *)&param, sizeof(param));
1100                 memstick_new_req(card->host);
1101                 wait_for_completion(&card->mrq_complete);
1102                 if (card->current_mrq.error) {
1103                         rc = card->current_mrq.error;
1104                         goto out_free_buffer;
1105                 }
1106
1107                 memcpy(s_attr->data, buffer + addr % msb->page_size, rc);
1108         }
1109
1110         rc = 0;
1111 out_free_buffer:
1112         kfree(buffer);
1113 out_free_attr:
1114         kfree(attr);
1115         return rc;
1116 }
1117
1118 static int mspro_block_init_card(struct memstick_dev *card)
1119 {
1120         struct mspro_block_data *msb = memstick_get_drvdata(card);
1121         struct memstick_host *host = card->host;
1122         int rc = 0;
1123
1124         msb->system = MEMSTICK_SYS_SERIAL;
1125         card->reg_addr.r_offset = offsetof(struct mspro_register, status);
1126         card->reg_addr.r_length = sizeof(struct ms_status_register);
1127         card->reg_addr.w_offset = offsetof(struct mspro_register, param);
1128         card->reg_addr.w_length = sizeof(struct mspro_param_register);
1129
1130         if (memstick_set_rw_addr(card))
1131                 return -EIO;
1132
1133         msb->caps = host->caps;
1134
1135         msleep(150);
1136         rc = mspro_block_wait_for_ced(card);
1137         if (rc)
1138                 return rc;
1139
1140         rc = mspro_block_switch_interface(card);
1141         if (rc)
1142                 return rc;
1143
1144         dev_dbg(&card->dev, "card activated\n");
1145         if (msb->system != MEMSTICK_SYS_SERIAL)
1146                 msb->caps |= MEMSTICK_CAP_AUTO_GET_INT;
1147
1148         card->next_request = h_mspro_block_req_init;
1149         msb->mrq_handler = h_mspro_block_get_ro;
1150         memstick_init_req(&card->current_mrq, MS_TPC_READ_REG, NULL,
1151                           sizeof(struct ms_status_register));
1152         memstick_new_req(card->host);
1153         wait_for_completion(&card->mrq_complete);
1154         if (card->current_mrq.error)
1155                 return card->current_mrq.error;
1156
1157         dev_dbg(&card->dev, "card r/w status %d\n", msb->read_only ? 0 : 1);
1158
1159         msb->page_size = 512;
1160         rc = mspro_block_read_attributes(card);
1161         if (rc)
1162                 return rc;
1163
1164         dev_dbg(&card->dev, "attributes loaded\n");
1165         return 0;
1166
1167 }
1168
1169 static int mspro_block_init_disk(struct memstick_dev *card)
1170 {
1171         struct mspro_block_data *msb = memstick_get_drvdata(card);
1172         struct memstick_host *host = card->host;
1173         struct mspro_devinfo *dev_info = NULL;
1174         struct mspro_sys_info *sys_info = NULL;
1175         struct mspro_sys_attr *s_attr = NULL;
1176         int rc, disk_id;
1177         u64 limit = BLK_BOUNCE_HIGH;
1178         unsigned long capacity;
1179
1180         if (host->dev.dma_mask && *(host->dev.dma_mask))
1181                 limit = *(host->dev.dma_mask);
1182
1183         for (rc = 0; msb->attr_group.attrs[rc]; ++rc) {
1184                 s_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[rc]);
1185
1186                 if (s_attr->id == MSPRO_BLOCK_ID_DEVINFO)
1187                         dev_info = s_attr->data;
1188                 else if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO)
1189                         sys_info = s_attr->data;
1190         }
1191
1192         if (!dev_info || !sys_info)
1193                 return -ENODEV;
1194
1195         msb->cylinders = be16_to_cpu(dev_info->cylinders);
1196         msb->heads = be16_to_cpu(dev_info->heads);
1197         msb->sectors_per_track = be16_to_cpu(dev_info->sectors_per_track);
1198
1199         msb->page_size = be16_to_cpu(sys_info->unit_size);
1200
1201         if (!idr_pre_get(&mspro_block_disk_idr, GFP_KERNEL))
1202                 return -ENOMEM;
1203
1204         mutex_lock(&mspro_block_disk_lock);
1205         rc = idr_get_new(&mspro_block_disk_idr, card, &disk_id);
1206         mutex_unlock(&mspro_block_disk_lock);
1207
1208         if (rc)
1209                 return rc;
1210
1211         if ((disk_id << MSPRO_BLOCK_PART_SHIFT) > 255) {
1212                 rc = -ENOSPC;
1213                 goto out_release_id;
1214         }
1215
1216         msb->disk = alloc_disk(1 << MSPRO_BLOCK_PART_SHIFT);
1217         if (!msb->disk) {
1218                 rc = -ENOMEM;
1219                 goto out_release_id;
1220         }
1221
1222         msb->queue = blk_init_queue(mspro_block_submit_req, &msb->q_lock);
1223         if (!msb->queue) {
1224                 rc = -ENOMEM;
1225                 goto out_put_disk;
1226         }
1227
1228         msb->queue->queuedata = card;
1229         blk_queue_prep_rq(msb->queue, mspro_block_prepare_req);
1230
1231         blk_queue_bounce_limit(msb->queue, limit);
1232         blk_queue_max_sectors(msb->queue, MSPRO_BLOCK_MAX_PAGES);
1233         blk_queue_max_phys_segments(msb->queue, MSPRO_BLOCK_MAX_SEGS);
1234         blk_queue_max_hw_segments(msb->queue, MSPRO_BLOCK_MAX_SEGS);
1235         blk_queue_max_segment_size(msb->queue,
1236                                    MSPRO_BLOCK_MAX_PAGES * msb->page_size);
1237
1238         msb->disk->major = major;
1239         msb->disk->first_minor = disk_id << MSPRO_BLOCK_PART_SHIFT;
1240         msb->disk->fops = &ms_block_bdops;
1241         msb->usage_count = 1;
1242         msb->disk->private_data = msb;
1243         msb->disk->queue = msb->queue;
1244         msb->disk->driverfs_dev = &card->dev;
1245
1246         sprintf(msb->disk->disk_name, "mspblk%d", disk_id);
1247
1248         blk_queue_hardsect_size(msb->queue, msb->page_size);
1249
1250         capacity = be16_to_cpu(sys_info->user_block_count);
1251         capacity *= be16_to_cpu(sys_info->block_size);
1252         capacity *= msb->page_size >> 9;
1253         set_capacity(msb->disk, capacity);
1254         dev_dbg(&card->dev, "capacity set %ld\n", capacity);
1255
1256         add_disk(msb->disk);
1257         msb->active = 1;
1258         return 0;
1259
1260 out_put_disk:
1261         put_disk(msb->disk);
1262 out_release_id:
1263         mutex_lock(&mspro_block_disk_lock);
1264         idr_remove(&mspro_block_disk_idr, disk_id);
1265         mutex_unlock(&mspro_block_disk_lock);
1266         return rc;
1267 }
1268
1269 static void mspro_block_data_clear(struct mspro_block_data *msb)
1270 {
1271         int cnt;
1272         struct mspro_sys_attr *s_attr;
1273
1274         if (msb->attr_group.attrs) {
1275                 for (cnt = 0; msb->attr_group.attrs[cnt]; ++cnt) {
1276                         s_attr = mspro_from_sysfs_attr(msb->attr_group
1277                                                            .attrs[cnt]);
1278                         kfree(s_attr->data);
1279                         kfree(s_attr);
1280                 }
1281                 kfree(msb->attr_group.attrs);
1282         }
1283
1284         msb->card = NULL;
1285 }
1286
1287 static int mspro_block_check_card(struct memstick_dev *card)
1288 {
1289         struct mspro_block_data *msb = memstick_get_drvdata(card);
1290
1291         return (msb->active == 1);
1292 }
1293
1294 static int mspro_block_probe(struct memstick_dev *card)
1295 {
1296         struct mspro_block_data *msb;
1297         int rc = 0;
1298
1299         msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL);
1300         if (!msb)
1301                 return -ENOMEM;
1302         memstick_set_drvdata(card, msb);
1303         msb->card = card;
1304         spin_lock_init(&msb->q_lock);
1305
1306         rc = mspro_block_init_card(card);
1307
1308         if (rc)
1309                 goto out_free;
1310
1311         rc = sysfs_create_group(&card->dev.kobj, &msb->attr_group);
1312         if (rc)
1313                 goto out_free;
1314
1315         rc = mspro_block_init_disk(card);
1316         if (!rc) {
1317                 card->check = mspro_block_check_card;
1318                 card->stop = mspro_block_stop;
1319                 card->start = mspro_block_start;
1320                 return 0;
1321         }
1322
1323         sysfs_remove_group(&card->dev.kobj, &msb->attr_group);
1324 out_free:
1325         memstick_set_drvdata(card, NULL);
1326         mspro_block_data_clear(msb);
1327         kfree(msb);
1328         return rc;
1329 }
1330
1331 static void mspro_block_remove(struct memstick_dev *card)
1332 {
1333         struct mspro_block_data *msb = memstick_get_drvdata(card);
1334         unsigned long flags;
1335
1336         del_gendisk(msb->disk);
1337         dev_dbg(&card->dev, "mspro block remove\n");
1338         spin_lock_irqsave(&msb->q_lock, flags);
1339         msb->eject = 1;
1340         blk_start_queue(msb->queue);
1341         spin_unlock_irqrestore(&msb->q_lock, flags);
1342
1343         blk_cleanup_queue(msb->queue);
1344         msb->queue = NULL;
1345
1346         sysfs_remove_group(&card->dev.kobj, &msb->attr_group);
1347
1348         mutex_lock(&mspro_block_disk_lock);
1349         mspro_block_data_clear(msb);
1350         mutex_unlock(&mspro_block_disk_lock);
1351
1352         mspro_block_disk_release(msb->disk);
1353         memstick_set_drvdata(card, NULL);
1354 }
1355
1356 #ifdef CONFIG_PM
1357
1358 static int mspro_block_suspend(struct memstick_dev *card, pm_message_t state)
1359 {
1360         struct mspro_block_data *msb = memstick_get_drvdata(card);
1361         unsigned long flags;
1362
1363         spin_lock_irqsave(&msb->q_lock, flags);
1364         blk_stop_queue(msb->queue);
1365         msb->active = 0;
1366         spin_unlock_irqrestore(&msb->q_lock, flags);
1367
1368         return 0;
1369 }
1370
1371 static int mspro_block_resume(struct memstick_dev *card)
1372 {
1373         struct mspro_block_data *msb = memstick_get_drvdata(card);
1374         unsigned long flags;
1375         int rc = 0;
1376
1377 #ifdef CONFIG_MEMSTICK_UNSAFE_RESUME
1378
1379         struct mspro_block_data *new_msb;
1380         struct memstick_host *host = card->host;
1381         struct mspro_sys_attr *s_attr, *r_attr;
1382         unsigned char cnt;
1383
1384         mutex_lock(&host->lock);
1385         new_msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL);
1386         if (!new_msb) {
1387                 rc = -ENOMEM;
1388                 goto out_unlock;
1389         }
1390
1391         new_msb->card = card;
1392         memstick_set_drvdata(card, new_msb);
1393         if (mspro_block_init_card(card))
1394                 goto out_free;
1395
1396         for (cnt = 0; new_msb->attr_group.attrs[cnt]
1397                       && msb->attr_group.attrs[cnt]; ++cnt) {
1398                 s_attr = mspro_from_sysfs_attr(new_msb->attr_group.attrs[cnt]);
1399                 r_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[cnt]);
1400
1401                 if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO
1402                     && r_attr->id == s_attr->id) {
1403                         if (memcmp(s_attr->data, r_attr->data, s_attr->size))
1404                                 break;
1405
1406                         msb->active = 1;
1407                         break;
1408                 }
1409         }
1410
1411 out_free:
1412         memstick_set_drvdata(card, msb);
1413         mspro_block_data_clear(new_msb);
1414         kfree(new_msb);
1415 out_unlock:
1416         mutex_unlock(&host->lock);
1417
1418 #endif /* CONFIG_MEMSTICK_UNSAFE_RESUME */
1419
1420         spin_lock_irqsave(&msb->q_lock, flags);
1421         blk_start_queue(msb->queue);
1422         spin_unlock_irqrestore(&msb->q_lock, flags);
1423         return rc;
1424 }
1425
1426 #else
1427
1428 #define mspro_block_suspend NULL
1429 #define mspro_block_resume NULL
1430
1431 #endif /* CONFIG_PM */
1432
1433 static struct memstick_device_id mspro_block_id_tbl[] = {
1434         {MEMSTICK_MATCH_ALL, MEMSTICK_TYPE_PRO, MEMSTICK_CATEGORY_STORAGE_DUO,
1435          MEMSTICK_CLASS_DUO},
1436         {}
1437 };
1438
1439
1440 static struct memstick_driver mspro_block_driver = {
1441         .driver = {
1442                 .name  = DRIVER_NAME,
1443                 .owner = THIS_MODULE
1444         },
1445         .id_table = mspro_block_id_tbl,
1446         .probe    = mspro_block_probe,
1447         .remove   = mspro_block_remove,
1448         .suspend  = mspro_block_suspend,
1449         .resume   = mspro_block_resume
1450 };
1451
1452 static int __init mspro_block_init(void)
1453 {
1454         int rc = -ENOMEM;
1455
1456         rc = register_blkdev(major, DRIVER_NAME);
1457         if (rc < 0) {
1458                 printk(KERN_ERR DRIVER_NAME ": failed to register "
1459                        "major %d, error %d\n", major, rc);
1460                 return rc;
1461         }
1462         if (!major)
1463                 major = rc;
1464
1465         rc = memstick_register_driver(&mspro_block_driver);
1466         if (rc)
1467                 unregister_blkdev(major, DRIVER_NAME);
1468         return rc;
1469 }
1470
1471 static void __exit mspro_block_exit(void)
1472 {
1473         memstick_unregister_driver(&mspro_block_driver);
1474         unregister_blkdev(major, DRIVER_NAME);
1475         idr_destroy(&mspro_block_disk_idr);
1476 }
1477
1478 module_init(mspro_block_init);
1479 module_exit(mspro_block_exit);
1480
1481 MODULE_LICENSE("GPL");
1482 MODULE_AUTHOR("Alex Dubov");
1483 MODULE_DESCRIPTION("Sony MemoryStickPro block device driver");
1484 MODULE_DEVICE_TABLE(memstick, mspro_block_id_tbl);