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