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/slab.h>
  21 #include <linux/smp_lock.h>
  22 #include <linux/memstick.h>
  23
  24 #define DRIVER_NAME "mspro_block"
  25
  26 static int major;
  27 module_param(major, int, 0644);
  28
  29 #define MSPRO_BLOCK_MAX_SEGS  32
  30 #define MSPRO_BLOCK_MAX_PAGES ((2 << 16) - 1)
  31
  32 #define MSPRO_BLOCK_SIGNATURE        0xa5c3
  33 #define MSPRO_BLOCK_MAX_ATTRIBUTES   41
  34
  35 #define MSPRO_BLOCK_PART_SHIFT 3
  36
  37 enum {
  38         MSPRO_BLOCK_ID_SYSINFO         = 0x10,
  39         MSPRO_BLOCK_ID_MODELNAME       = 0x15,
  40         MSPRO_BLOCK_ID_MBR             = 0x20,
  41         MSPRO_BLOCK_ID_PBR16           = 0x21,
  42         MSPRO_BLOCK_ID_PBR32           = 0x22,
  43         MSPRO_BLOCK_ID_SPECFILEVALUES1 = 0x25,
  44         MSPRO_BLOCK_ID_SPECFILEVALUES2 = 0x26,
  45         MSPRO_BLOCK_ID_DEVINFO         = 0x30
  46 };
  47
  48 struct mspro_sys_attr {
  49         size_t                  size;
  50         void                    *data;
  51         unsigned char           id;
  52         char                    name[32];
  53         struct device_attribute dev_attr;
  54 };
  55
  56 struct mspro_attr_entry {
  57         __be32 address;
  58         __be32 size;
  59         unsigned char id;
  60         unsigned char reserved[3];
  61 } __attribute__((packed));
  62
  63 struct mspro_attribute {
  64         __be16 signature;
  65         unsigned short          version;
  66         unsigned char           count;
  67         unsigned char           reserved[11];
  68         struct mspro_attr_entry entries[];
  69 } __attribute__((packed));
  70
  71 struct mspro_sys_info {
  72         unsigned char  class;
  73         unsigned char  reserved0;
  74         __be16 block_size;
  75         __be16 block_count;
  76         __be16 user_block_count;
  77         __be16 page_size;
  78         unsigned char  reserved1[2];
  79         unsigned char  assembly_date[8];
  80         __be32 serial_number;
  81         unsigned char  assembly_maker_code;
  82         unsigned char  assembly_model_code[3];
  83         __be16 memory_maker_code;
  84         __be16 memory_model_code;
  85         unsigned char  reserved2[4];
  86         unsigned char  vcc;
  87         unsigned char  vpp;
  88         __be16 controller_number;
  89         __be16 controller_function;
  90         __be16 start_sector;
  91         __be16 unit_size;
  92         unsigned char  ms_sub_class;
  93         unsigned char  reserved3[4];
  94         unsigned char  interface_type;
  95         __be16 controller_code;
  96         unsigned char  format_type;
  97         unsigned char  reserved4;
  98         unsigned char  device_type;
  99         unsigned char  reserved5[7];
 100         unsigned char  mspro_id[16];
 101         unsigned char  reserved6[16];
 102 } __attribute__((packed));
 103
 104 struct mspro_mbr {
 105         unsigned char boot_partition;
 106         unsigned char start_head;
 107         unsigned char start_sector;
 108         unsigned char start_cylinder;
 109         unsigned char partition_type;
 110         unsigned char end_head;
 111         unsigned char end_sector;
 112         unsigned char end_cylinder;
 113         unsigned int  start_sectors;
 114         unsigned int  sectors_per_partition;
 115 } __attribute__((packed));
 116
 117 struct mspro_specfile {
 118         char           name[8];
 119         char           ext[3];
 120         unsigned char  attr;
 121         unsigned char  reserved[10];
 122         unsigned short time;
 123         unsigned short date;
 124         unsigned short cluster;
 125         unsigned int   size;
 126 } __attribute__((packed));
 127
 128 struct mspro_devinfo {
 129         __be16 cylinders;
 130         __be16 heads;
 131         __be16 bytes_per_track;
 132         __be16 bytes_per_sector;
 133         __be16 sectors_per_track;
 134         unsigned char  reserved[6];
 135 } __attribute__((packed));
 136
 137 struct mspro_block_data {
 138         struct memstick_dev   *card;
 139         unsigned int          usage_count;
 140         unsigned int          caps;
 141         struct gendisk        *disk;
 142         struct request_queue  *queue;
 143         struct request        *block_req;
 144         spinlock_t            q_lock;
 145
 146         unsigned short        page_size;
 147         unsigned short        cylinders;
 148         unsigned short        heads;
 149         unsigned short        sectors_per_track;
 150
 151         unsigned char         system;
 152         unsigned char         read_only:1,
 153                               eject:1,
 154                               has_request:1,
 155                               data_dir:1,
 156                               active:1;
 157         unsigned char         transfer_cmd;
 158
 159         int                   (*mrq_handler)(struct memstick_dev *card,
 160                                              struct memstick_request **mrq);
 161
 162         struct attribute_group attr_group;
 163
 164         struct scatterlist    req_sg[MSPRO_BLOCK_MAX_SEGS];
 165         unsigned int          seg_count;
 166         unsigned int          current_seg;
 167         unsigned int          current_page;
 168 };
 169
 170 static DEFINE_IDR(mspro_block_disk_idr);
 171 static DEFINE_MUTEX(mspro_block_disk_lock);
 172
 173 static int mspro_block_complete_req(struct memstick_dev *card, int error);
 174
 175 /*** Block device ***/
 176
 177 static int mspro_block_bd_open(struct block_device *bdev, fmode_t mode)
 178 {
 179         struct gendisk *disk = bdev->bd_disk;
 180         struct mspro_block_data *msb = disk->private_data;
 181         int rc = -ENXIO;
 182
 183         lock_kernel();
 184         mutex_lock(&mspro_block_disk_lock);
 185
 186         if (msb && msb->card) {
 187                 msb->usage_count++;
 188                 if ((mode & FMODE_WRITE) && msb->read_only)
 189                         rc = -EROFS;
 190                 else
 191                         rc = 0;
 192         }
 193
 194         mutex_unlock(&mspro_block_disk_lock);
 195         unlock_kernel();
 196
 197         return rc;
 198 }
 199
 200
 201 static int mspro_block_disk_release(struct gendisk *disk)
 202 {
 203         struct mspro_block_data *msb = disk->private_data;
 204         int disk_id = MINOR(disk_devt(disk)) >> MSPRO_BLOCK_PART_SHIFT;
 205
 206         mutex_lock(&mspro_block_disk_lock);
 207
 208         if (msb) {
 209                 if (msb->usage_count)
 210                         msb->usage_count--;
 211
 212                 if (!msb->usage_count) {
 213                         kfree(msb);
 214                         disk->private_data = NULL;
 215                         idr_remove(&mspro_block_disk_idr, disk_id);
 216                         put_disk(disk);
 217                 }
 218         }
 219
 220         mutex_unlock(&mspro_block_disk_lock);
 221
 222         return 0;
 223 }
 224
 225 static int mspro_block_bd_release(struct gendisk *disk, fmode_t mode)
 226 {
 227         int ret;
 228         lock_kernel();
 229         ret = mspro_block_disk_release(disk);
 230         unlock_kernel();
 231         return ret;
 232 }
 233
 234 static int mspro_block_bd_getgeo(struct block_device *bdev,
 235                                  struct hd_geometry *geo)
 236 {
 237         struct mspro_block_data *msb = bdev->bd_disk->private_data;
 238
 239         geo->heads = msb->heads;
 240         geo->sectors = msb->sectors_per_track;
 241         geo->cylinders = msb->cylinders;
 242
 243         return 0;
 244 }
 245
 246 static const struct block_device_operations ms_block_bdops = {
 247         .open    = mspro_block_bd_open,
 248         .release = mspro_block_bd_release,
 249         .getgeo  = mspro_block_bd_getgeo,
 250         .owner   = THIS_MODULE
 251 };
 252
 253 /*** Information ***/
 254
 255 static struct mspro_sys_attr *mspro_from_sysfs_attr(struct attribute *attr)
 256 {
 257         struct device_attribute *dev_attr
 258                 = container_of(attr, struct device_attribute, attr);
 259         return container_of(dev_attr, struct mspro_sys_attr, dev_attr);
 260 }
 261
 262 static const char *mspro_block_attr_name(unsigned char tag)
 263 {
 264         switch (tag) {
 265         case MSPRO_BLOCK_ID_SYSINFO:
 266                 return "attr_sysinfo";
 267         case MSPRO_BLOCK_ID_MODELNAME:
 268                 return "attr_modelname";
 269         case MSPRO_BLOCK_ID_MBR:
 270                 return "attr_mbr";
 271         case MSPRO_BLOCK_ID_PBR16:
 272                 return "attr_pbr16";
 273         case MSPRO_BLOCK_ID_PBR32:
 274                 return "attr_pbr32";
 275         case MSPRO_BLOCK_ID_SPECFILEVALUES1:
 276                 return "attr_specfilevalues1";
 277         case MSPRO_BLOCK_ID_SPECFILEVALUES2:
 278                 return "attr_specfilevalues2";
 279         case MSPRO_BLOCK_ID_DEVINFO:
 280                 return "attr_devinfo";
 281         default:
 282                 return NULL;
 283         };
 284 }
 285
 286 typedef ssize_t (*sysfs_show_t)(struct device *dev,
 287                                 struct device_attribute *attr,
 288                                 char *buffer);
 289
 290 static ssize_t mspro_block_attr_show_default(struct device *dev,
 291                                              struct device_attribute *attr,
 292                                              char *buffer)
 293 {
 294         struct mspro_sys_attr *s_attr = container_of(attr,
 295                                                      struct mspro_sys_attr,
 296                                                      dev_attr);
 297
 298         ssize_t cnt, rc = 0;
 299
 300         for (cnt = 0; cnt < s_attr->size; cnt++) {
 301                 if (cnt && !(cnt % 16)) {
 302                         if (PAGE_SIZE - rc)
 303                                 buffer[rc++] = '\n';
 304                 }
 305
 306                 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "%02x ",
 307                                 ((unsigned char *)s_attr->data)[cnt]);
 308         }
 309         return rc;
 310 }
 311
 312 static ssize_t mspro_block_attr_show_sysinfo(struct device *dev,
 313                                              struct device_attribute *attr,
 314                                              char *buffer)
 315 {
 316         struct mspro_sys_attr *x_attr = container_of(attr,
 317                                                      struct mspro_sys_attr,
 318                                                      dev_attr);
 319         struct mspro_sys_info *x_sys = x_attr->data;
 320         ssize_t rc = 0;
 321         int date_tz = 0, date_tz_f = 0;
 322
 323         if (x_sys->assembly_date[0] > 0x80U) {
 324                 date_tz = (~x_sys->assembly_date[0]) + 1;
 325                 date_tz_f = date_tz & 3;
 326                 date_tz >>= 2;
 327                 date_tz = -date_tz;
 328                 date_tz_f *= 15;
 329         } else if (x_sys->assembly_date[0] < 0x80U) {
 330                 date_tz = x_sys->assembly_date[0];
 331                 date_tz_f = date_tz & 3;
 332                 date_tz >>= 2;
 333                 date_tz_f *= 15;
 334         }
 335
 336         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "class: %x\n",
 337                         x_sys->class);
 338         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "block size: %x\n",
 339                         be16_to_cpu(x_sys->block_size));
 340         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "block count: %x\n",
 341                         be16_to_cpu(x_sys->block_count));
 342         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "user block count: %x\n",
 343                         be16_to_cpu(x_sys->user_block_count));
 344         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "page size: %x\n",
 345                         be16_to_cpu(x_sys->page_size));
 346         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "assembly date: "
 347                         "GMT%+d:%d %04u-%02u-%02u %02u:%02u:%02u\n",
 348                         date_tz, date_tz_f,
 349                         be16_to_cpup((__be16 *)&x_sys->assembly_date[1]),
 350                         x_sys->assembly_date[3], x_sys->assembly_date[4],
 351                         x_sys->assembly_date[5], x_sys->assembly_date[6],
 352                         x_sys->assembly_date[7]);
 353         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "serial number: %x\n",
 354                         be32_to_cpu(x_sys->serial_number));
 355         rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
 356                         "assembly maker code: %x\n",
 357                         x_sys->assembly_maker_code);
 358         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "assembly model code: "
 359                         "%02x%02x%02x\n", x_sys->assembly_model_code[0],
 360                         x_sys->assembly_model_code[1],
 361                         x_sys->assembly_model_code[2]);
 362         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "memory maker code: %x\n",
 363                         be16_to_cpu(x_sys->memory_maker_code));
 364         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "memory model code: %x\n",
 365                         be16_to_cpu(x_sys->memory_model_code));
 366         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "vcc: %x\n",
 367                         x_sys->vcc);
 368         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "vpp: %x\n",
 369                         x_sys->vpp);
 370         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "controller number: %x\n",
 371                         be16_to_cpu(x_sys->controller_number));
 372         rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
 373                         "controller function: %x\n",
 374                         be16_to_cpu(x_sys->controller_function));
 375         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sector: %x\n",
 376                         be16_to_cpu(x_sys->start_sector));
 377         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "unit size: %x\n",
 378                         be16_to_cpu(x_sys->unit_size));
 379         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "sub class: %x\n",
 380                         x_sys->ms_sub_class);
 381         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "interface type: %x\n",
 382                         x_sys->interface_type);
 383         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "controller code: %x\n",
 384                         be16_to_cpu(x_sys->controller_code));
 385         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "format type: %x\n",
 386                         x_sys->format_type);
 387         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "device type: %x\n",
 388                         x_sys->device_type);
 389         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "mspro id: %s\n",
 390                         x_sys->mspro_id);
 391         return rc;
 392 }
 393
 394 static ssize_t mspro_block_attr_show_modelname(struct device *dev,
 395                                                struct device_attribute *attr,
 396                                                char *buffer)
 397 {
 398         struct mspro_sys_attr *s_attr = container_of(attr,
 399                                                      struct mspro_sys_attr,
 400                                                      dev_attr);
 401
 402         return scnprintf(buffer, PAGE_SIZE, "%s", (char *)s_attr->data);
 403 }
 404
 405 static ssize_t mspro_block_attr_show_mbr(struct device *dev,
 406                                          struct device_attribute *attr,
 407                                          char *buffer)
 408 {
 409         struct mspro_sys_attr *x_attr = container_of(attr,
 410                                                      struct mspro_sys_attr,
 411                                                      dev_attr);
 412         struct mspro_mbr *x_mbr = x_attr->data;
 413         ssize_t rc = 0;
 414
 415         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "boot partition: %x\n",
 416                         x_mbr->boot_partition);
 417         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start head: %x\n",
 418                         x_mbr->start_head);
 419         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sector: %x\n",
 420                         x_mbr->start_sector);
 421         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start cylinder: %x\n",
 422                         x_mbr->start_cylinder);
 423         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "partition type: %x\n",
 424                         x_mbr->partition_type);
 425         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end head: %x\n",
 426                         x_mbr->end_head);
 427         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end sector: %x\n",
 428                         x_mbr->end_sector);
 429         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end cylinder: %x\n",
 430                         x_mbr->end_cylinder);
 431         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sectors: %x\n",
 432                         x_mbr->start_sectors);
 433         rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
 434                         "sectors per partition: %x\n",
 435                         x_mbr->sectors_per_partition);
 436         return rc;
 437 }
 438
 439 static ssize_t mspro_block_attr_show_specfile(struct device *dev,
 440                                               struct device_attribute *attr,
 441                                               char *buffer)
 442 {
 443         struct mspro_sys_attr *x_attr = container_of(attr,
 444                                                      struct mspro_sys_attr,
 445                                                      dev_attr);
 446         struct mspro_specfile *x_spfile = x_attr->data;
 447         char name[9], ext[4];
 448         ssize_t rc = 0;
 449
 450         memcpy(name, x_spfile->name, 8);
 451         name[8] = 0;
 452         memcpy(ext, x_spfile->ext, 3);
 453         ext[3] = 0;
 454
 455         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "name: %s\n", name);
 456         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "ext: %s\n", ext);
 457         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "attribute: %x\n",
 458                         x_spfile->attr);
 459         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "time: %d:%d:%d\n",
 460                         x_spfile->time >> 11,
 461                         (x_spfile->time >> 5) & 0x3f,
 462                         (x_spfile->time & 0x1f) * 2);
 463         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "date: %d-%d-%d\n",
 464                         (x_spfile->date >> 9) + 1980,
 465                         (x_spfile->date >> 5) & 0xf,
 466                         x_spfile->date & 0x1f);
 467         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start cluster: %x\n",
 468                         x_spfile->cluster);
 469         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "size: %x\n",
 470                         x_spfile->size);
 471         return rc;
 472 }
 473
 474 static ssize_t mspro_block_attr_show_devinfo(struct device *dev,
 475                                              struct device_attribute *attr,
 476                                              char *buffer)
 477 {
 478         struct mspro_sys_attr *x_attr = container_of(attr,
 479                                                      struct mspro_sys_attr,
 480                                                      dev_attr);
 481         struct mspro_devinfo *x_devinfo = x_attr->data;
 482         ssize_t rc = 0;
 483
 484         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "cylinders: %x\n",
 485                         be16_to_cpu(x_devinfo->cylinders));
 486         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "heads: %x\n",
 487                         be16_to_cpu(x_devinfo->heads));
 488         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "bytes per track: %x\n",
 489                         be16_to_cpu(x_devinfo->bytes_per_track));
 490         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "bytes per sector: %x\n",
 491                         be16_to_cpu(x_devinfo->bytes_per_sector));
 492         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "sectors per track: %x\n",
 493                         be16_to_cpu(x_devinfo->sectors_per_track));
 494         return rc;
 495 }
 496
 497 static sysfs_show_t mspro_block_attr_show(unsigned char tag)
 498 {
 499         switch (tag) {
 500         case MSPRO_BLOCK_ID_SYSINFO:
 501                 return mspro_block_attr_show_sysinfo;
 502         case MSPRO_BLOCK_ID_MODELNAME:
 503                 return mspro_block_attr_show_modelname;
 504         case MSPRO_BLOCK_ID_MBR:
 505                 return mspro_block_attr_show_mbr;
 506         case MSPRO_BLOCK_ID_SPECFILEVALUES1:
 507         case MSPRO_BLOCK_ID_SPECFILEVALUES2:
 508                 return mspro_block_attr_show_specfile;
 509         case MSPRO_BLOCK_ID_DEVINFO:
 510                 return mspro_block_attr_show_devinfo;
 511         default:
 512                 return mspro_block_attr_show_default;
 513         }
 514 }
 515
 516 /*** Protocol handlers ***/
 517
 518 /*
 519  * Functions prefixed with "h_" are protocol callbacks. They can be called from
 520  * interrupt context. Return value of 0 means that request processing is still
 521  * ongoing, while special error value of -EAGAIN means that current request is
 522  * finished (and request processor should come back some time later).
 523  */
 524
 525 static int h_mspro_block_req_init(struct memstick_dev *card,
 526                                   struct memstick_request **mrq)
 527 {
 528         struct mspro_block_data *msb = memstick_get_drvdata(card);
 529
 530         *mrq = &card->current_mrq;
 531         card->next_request = msb->mrq_handler;
 532         return 0;
 533 }
 534
 535 static int h_mspro_block_default(struct memstick_dev *card,
 536                                  struct memstick_request **mrq)
 537 {
 538         return mspro_block_complete_req(card, (*mrq)->error);
 539 }
 540
 541 static int h_mspro_block_default_bad(struct memstick_dev *card,
 542                                      struct memstick_request **mrq)
 543 {
 544         return -ENXIO;
 545 }
 546
 547 static int h_mspro_block_get_ro(struct memstick_dev *card,
 548                                 struct memstick_request **mrq)
 549 {
 550         struct mspro_block_data *msb = memstick_get_drvdata(card);
 551
 552         if (!(*mrq)->error) {
 553                 if ((*mrq)->data[offsetof(struct ms_status_register, status0)]
 554                     & MEMSTICK_STATUS0_WP)
 555                         msb->read_only = 1;
 556                 else
 557                         msb->read_only = 0;
 558         }
 559
 560         return mspro_block_complete_req(card, (*mrq)->error);
 561 }
 562
 563 static int h_mspro_block_wait_for_ced(struct memstick_dev *card,
 564                                       struct memstick_request **mrq)
 565 {
 566         dev_dbg(&card->dev, "wait for ced: value %x\n", (*mrq)->data[0]);
 567
 568         if (!(*mrq)->error) {
 569                 if ((*mrq)->data[0] & (MEMSTICK_INT_CMDNAK | MEMSTICK_INT_ERR))
 570                         (*mrq)->error = -EFAULT;
 571                 else if (!((*mrq)->data[0] & MEMSTICK_INT_CED))
 572                         return 0;
 573         }
 574
 575         return mspro_block_complete_req(card, (*mrq)->error);
 576 }
 577
 578 static int h_mspro_block_transfer_data(struct memstick_dev *card,
 579                                        struct memstick_request **mrq)
 580 {
 581         struct mspro_block_data *msb = memstick_get_drvdata(card);
 582         unsigned char t_val = 0;
 583         struct scatterlist t_sg = { 0 };
 584         size_t t_offset;
 585
 586         if ((*mrq)->error)
 587                 return mspro_block_complete_req(card, (*mrq)->error);
 588
 589         switch ((*mrq)->tpc) {
 590         case MS_TPC_WRITE_REG:
 591                 memstick_init_req(*mrq, MS_TPC_SET_CMD, &msb->transfer_cmd, 1);
 592                 (*mrq)->need_card_int = 1;
 593                 return 0;
 594         case MS_TPC_SET_CMD:
 595                 t_val = (*mrq)->int_reg;
 596                 memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
 597                 if (msb->caps & MEMSTICK_CAP_AUTO_GET_INT)
 598                         goto has_int_reg;
 599                 return 0;
 600         case MS_TPC_GET_INT:
 601                 t_val = (*mrq)->data[0];
 602 has_int_reg:
 603                 if (t_val & (MEMSTICK_INT_CMDNAK | MEMSTICK_INT_ERR)) {
 604                         t_val = MSPRO_CMD_STOP;
 605                         memstick_init_req(*mrq, MS_TPC_SET_CMD, &t_val, 1);
 606                         card->next_request = h_mspro_block_default;
 607                         return 0;
 608                 }
 609
 610                 if (msb->current_page
 611                     == (msb->req_sg[msb->current_seg].length
 612                         / msb->page_size)) {
 613                         msb->current_page = 0;
 614                         msb->current_seg++;
 615
 616                         if (msb->current_seg == msb->seg_count) {
 617                                 if (t_val & MEMSTICK_INT_CED) {
 618                                         return mspro_block_complete_req(card,
 619                                                                         0);
 620                                 } else {
 621                                         card->next_request
 622                                                 = h_mspro_block_wait_for_ced;
 623                                         memstick_init_req(*mrq, MS_TPC_GET_INT,
 624                                                           NULL, 1);
 625                                         return 0;
 626                                 }
 627                         }
 628                 }
 629
 630                 if (!(t_val & MEMSTICK_INT_BREQ)) {
 631                         memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
 632                         return 0;
 633                 }
 634
 635                 t_offset = msb->req_sg[msb->current_seg].offset;
 636                 t_offset += msb->current_page * msb->page_size;
 637
 638                 sg_set_page(&t_sg,
 639                             nth_page(sg_page(&(msb->req_sg[msb->current_seg])),
 640                                      t_offset >> PAGE_SHIFT),
 641                             msb->page_size, offset_in_page(t_offset));
 642
 643                 memstick_init_req_sg(*mrq, msb->data_dir == READ
 644                                            ? MS_TPC_READ_LONG_DATA
 645                                            : MS_TPC_WRITE_LONG_DATA,
 646                                      &t_sg);
 647                 (*mrq)->need_card_int = 1;
 648                 return 0;
 649         case MS_TPC_READ_LONG_DATA:
 650         case MS_TPC_WRITE_LONG_DATA:
 651                 msb->current_page++;
 652                 if (msb->caps & MEMSTICK_CAP_AUTO_GET_INT) {
 653                         t_val = (*mrq)->int_reg;
 654                         goto has_int_reg;
 655                 } else {
 656                         memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
 657                         return 0;
 658                 }
 659
 660         default:
 661                 BUG();
 662         }
 663 }
 664
 665 /*** Data transfer ***/
 666
 667 static int mspro_block_issue_req(struct memstick_dev *card, int chunk)
 668 {
 669         struct mspro_block_data *msb = memstick_get_drvdata(card);
 670         sector_t t_sec;
 671         unsigned int count;
 672         struct mspro_param_register param;
 673
 674 try_again:
 675         while (chunk) {
 676                 msb->current_page = 0;
 677                 msb->current_seg = 0;
 678                 msb->seg_count = blk_rq_map_sg(msb->block_req->q,
 679                                                msb->block_req,
 680                                                msb->req_sg);
 681
 682                 if (!msb->seg_count) {
 683                         chunk = __blk_end_request_cur(msb->block_req, -ENOMEM);
 684                         continue;
 685                 }
 686
 687                 t_sec = blk_rq_pos(msb->block_req) << 9;
 688                 sector_div(t_sec, msb->page_size);
 689
 690                 count = blk_rq_bytes(msb->block_req);
 691                 count /= msb->page_size;
 692
 693                 param.system = msb->system;
 694                 param.data_count = cpu_to_be16(count);
 695                 param.data_address = cpu_to_be32((uint32_t)t_sec);
 696                 param.tpc_param = 0;
 697
 698                 msb->data_dir = rq_data_dir(msb->block_req);
 699                 msb->transfer_cmd = msb->data_dir == READ
 700                                     ? MSPRO_CMD_READ_DATA
 701                                     : MSPRO_CMD_WRITE_DATA;
 702
 703                 dev_dbg(&card->dev, "data transfer: cmd %x, "
 704                         "lba %x, count %x\n", msb->transfer_cmd,
 705                         be32_to_cpu(param.data_address), count);
 706
 707                 card->next_request = h_mspro_block_req_init;
 708                 msb->mrq_handler = h_mspro_block_transfer_data;
 709                 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG,
 710                                   &param, sizeof(param));
 711                 memstick_new_req(card->host);
 712                 return 0;
 713         }
 714
 715         dev_dbg(&card->dev, "blk_fetch\n");
 716         msb->block_req = blk_fetch_request(msb->queue);
 717         if (!msb->block_req) {
 718                 dev_dbg(&card->dev, "issue end\n");
 719                 return -EAGAIN;
 720         }
 721
 722         dev_dbg(&card->dev, "trying again\n");
 723         chunk = 1;
 724         goto try_again;
 725 }
 726
 727 static int mspro_block_complete_req(struct memstick_dev *card, int error)
 728 {
 729         struct mspro_block_data *msb = memstick_get_drvdata(card);
 730         int chunk, cnt;
 731         unsigned int t_len = 0;
 732         unsigned long flags;
 733
 734         spin_lock_irqsave(&msb->q_lock, flags);
 735         dev_dbg(&card->dev, "complete %d, %d\n", msb->has_request ? 1 : 0,
 736                 error);
 737
 738         if (msb->has_request) {
 739                 /* Nothing to do - not really an error */
 740                 if (error == -EAGAIN)
 741                         error = 0;
 742
 743                 if (error || (card->current_mrq.tpc == MSPRO_CMD_STOP)) {
 744                         if (msb->data_dir == READ) {
 745                                 for (cnt = 0; cnt < msb->current_seg; cnt++)
 746                                         t_len += msb->req_sg[cnt].length
 747                                                  / msb->page_size;
 748
 749                                         if (msb->current_page)
 750                                                 t_len += msb->current_page - 1;
 751
 752                                         t_len *= msb->page_size;
 753                         }
 754                 } else
 755                         t_len = blk_rq_bytes(msb->block_req);
 756
 757                 dev_dbg(&card->dev, "transferred %x (%d)\n", t_len, error);
 758
 759                 if (error && !t_len)
 760                         t_len = blk_rq_cur_bytes(msb->block_req);
 761
 762                 chunk = __blk_end_request(msb->block_req, error, t_len);
 763
 764                 error = mspro_block_issue_req(card, chunk);
 765
 766                 if (!error)
 767                         goto out;
 768                 else
 769                         msb->has_request = 0;
 770         } else {
 771                 if (!error)
 772                         error = -EAGAIN;
 773         }
 774
 775         card->next_request = h_mspro_block_default_bad;
 776         complete_all(&card->mrq_complete);
 777 out:
 778         spin_unlock_irqrestore(&msb->q_lock, flags);
 779         return error;
 780 }
 781
 782 static void mspro_block_stop(struct memstick_dev *card)
 783 {
 784         struct mspro_block_data *msb = memstick_get_drvdata(card);
 785         int rc = 0;
 786         unsigned long flags;
 787
 788         while (1) {
 789                 spin_lock_irqsave(&msb->q_lock, flags);
 790                 if (!msb->has_request) {
 791                         blk_stop_queue(msb->queue);
 792                         rc = 1;
 793                 }
 794                 spin_unlock_irqrestore(&msb->q_lock, flags);
 795
 796                 if (rc)
 797                         break;
 798
 799                 wait_for_completion(&card->mrq_complete);
 800         }
 801 }
 802
 803 static void mspro_block_start(struct memstick_dev *card)
 804 {
 805         struct mspro_block_data *msb = memstick_get_drvdata(card);
 806         unsigned long flags;
 807
 808         spin_lock_irqsave(&msb->q_lock, flags);
 809         blk_start_queue(msb->queue);
 810         spin_unlock_irqrestore(&msb->q_lock, flags);
 811 }
 812
 813 static int mspro_block_prepare_req(struct request_queue *q, struct request *req)
 814 {
 815         if (req->cmd_type != REQ_TYPE_FS &&
 816             req->cmd_type != REQ_TYPE_BLOCK_PC) {
 817                 blk_dump_rq_flags(req, "MSPro unsupported request");
 818                 return BLKPREP_KILL;
 819         }
 820
 821         req->cmd_flags |= REQ_DONTPREP;
 822
 823         return BLKPREP_OK;
 824 }
 825
 826 static void mspro_block_submit_req(struct request_queue *q)
 827 {
 828         struct memstick_dev *card = q->queuedata;
 829         struct mspro_block_data *msb = memstick_get_drvdata(card);
 830         struct request *req = NULL;
 831
 832         if (msb->has_request)
 833                 return;
 834
 835         if (msb->eject) {
 836                 while ((req = blk_fetch_request(q)) != NULL)
 837                         __blk_end_request_all(req, -ENODEV);
 838
 839                 return;
 840         }
 841
 842         msb->has_request = 1;
 843         if (mspro_block_issue_req(card, 0))
 844                 msb->has_request = 0;
 845 }
 846
 847 /*** Initialization ***/
 848
 849 static int mspro_block_wait_for_ced(struct memstick_dev *card)
 850 {
 851         struct mspro_block_data *msb = memstick_get_drvdata(card);
 852
 853         card->next_request = h_mspro_block_req_init;
 854         msb->mrq_handler = h_mspro_block_wait_for_ced;
 855         memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1);
 856         memstick_new_req(card->host);
 857         wait_for_completion(&card->mrq_complete);
 858         return card->current_mrq.error;
 859 }
 860
 861 static int mspro_block_set_interface(struct memstick_dev *card,
 862                                      unsigned char sys_reg)
 863 {
 864         struct memstick_host *host = card->host;
 865         struct mspro_block_data *msb = memstick_get_drvdata(card);
 866         struct mspro_param_register param = {
 867                 .system = sys_reg,
 868                 .data_count = 0,
 869                 .data_address = 0,
 870                 .tpc_param = 0
 871         };
 872
 873         card->next_request = h_mspro_block_req_init;
 874         msb->mrq_handler = h_mspro_block_default;
 875         memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, &param,
 876                           sizeof(param));
 877         memstick_new_req(host);
 878         wait_for_completion(&card->mrq_complete);
 879         return card->current_mrq.error;
 880 }
 881
 882 static int mspro_block_switch_interface(struct memstick_dev *card)
 883 {
 884         struct memstick_host *host = card->host;
 885         struct mspro_block_data *msb = memstick_get_drvdata(card);
 886         int rc = 0;
 887
 888 try_again:
 889         if (msb->caps & MEMSTICK_CAP_PAR4)
 890                 rc = mspro_block_set_interface(card, MEMSTICK_SYS_PAR4);
 891         else
 892                 return 0;
 893
 894         if (rc) {
 895                 printk(KERN_WARNING
 896                        "%s: could not switch to 4-bit mode, error %d\n",
 897                        dev_name(&card->dev), rc);
 898                 return 0;
 899         }
 900
 901         msb->system = MEMSTICK_SYS_PAR4;
 902         host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_PAR4);
 903         printk(KERN_INFO "%s: switching to 4-bit parallel mode\n",
 904                dev_name(&card->dev));
 905
 906         if (msb->caps & MEMSTICK_CAP_PAR8) {
 907                 rc = mspro_block_set_interface(card, MEMSTICK_SYS_PAR8);
 908
 909                 if (!rc) {
 910                         msb->system = MEMSTICK_SYS_PAR8;
 911                         host->set_param(host, MEMSTICK_INTERFACE,
 912                                         MEMSTICK_PAR8);
 913                         printk(KERN_INFO
 914                                "%s: switching to 8-bit parallel mode\n",
 915                                dev_name(&card->dev));
 916                 } else
 917                         printk(KERN_WARNING
 918                                "%s: could not switch to 8-bit mode, error %d\n",
 919                                dev_name(&card->dev), rc);
 920         }
 921
 922         card->next_request = h_mspro_block_req_init;
 923         msb->mrq_handler = h_mspro_block_default;
 924         memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1);
 925         memstick_new_req(card->host);
 926         wait_for_completion(&card->mrq_complete);
 927         rc = card->current_mrq.error;
 928
 929         if (rc) {
 930                 printk(KERN_WARNING
 931                        "%s: interface error, trying to fall back to serial\n",
 932                        dev_name(&card->dev));
 933                 msb->system = MEMSTICK_SYS_SERIAL;
 934                 host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_OFF);
 935                 msleep(10);
 936                 host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_ON);
 937                 host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_SERIAL);
 938
 939                 rc = memstick_set_rw_addr(card);
 940                 if (!rc)
 941                         rc = mspro_block_set_interface(card, msb->system);
 942
 943                 if (!rc) {
 944                         msleep(150);
 945                         rc = mspro_block_wait_for_ced(card);
 946                         if (rc)
 947                                 return rc;
 948
 949                         if (msb->caps & MEMSTICK_CAP_PAR8) {
 950                                 msb->caps &= ~MEMSTICK_CAP_PAR8;
 951                                 goto try_again;
 952                         }
 953                 }
 954         }
 955         return rc;
 956 }
 957
 958 /* Memory allocated for attributes by this function should be freed by
 959  * mspro_block_data_clear, no matter if the initialization process succeded
 960  * or failed.
 961  */
 962 static int mspro_block_read_attributes(struct memstick_dev *card)
 963 {
 964         struct mspro_block_data *msb = memstick_get_drvdata(card);
 965         struct mspro_param_register param = {
 966                 .system = msb->system,
 967                 .data_count = cpu_to_be16(1),
 968                 .data_address = 0,
 969                 .tpc_param = 0
 970         };
 971         struct mspro_attribute *attr = NULL;
 972         struct mspro_sys_attr *s_attr = NULL;
 973         unsigned char *buffer = NULL;
 974         int cnt, rc, attr_count;
 975         unsigned int addr;
 976         unsigned short page_count;
 977
 978         attr = kmalloc(msb->page_size, GFP_KERNEL);
 979         if (!attr)
 980                 return -ENOMEM;
 981
 982         sg_init_one(&msb->req_sg[0], attr, msb->page_size);
 983         msb->seg_count = 1;
 984         msb->current_seg = 0;
 985         msb->current_page = 0;
 986         msb->data_dir = READ;
 987         msb->transfer_cmd = MSPRO_CMD_READ_ATRB;
 988
 989         card->next_request = h_mspro_block_req_init;
 990         msb->mrq_handler = h_mspro_block_transfer_data;
 991         memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, &param,
 992                           sizeof(param));
 993         memstick_new_req(card->host);
 994         wait_for_completion(&card->mrq_complete);
 995         if (card->current_mrq.error) {
 996                 rc = card->current_mrq.error;
 997                 goto out_free_attr;
 998         }
 999
1000         if (be16_to_cpu(attr->signature) != MSPRO_BLOCK_SIGNATURE) {
1001                 printk(KERN_ERR "%s: unrecognized device signature %x\n",
1002                        dev_name(&card->dev), be16_to_cpu(attr->signature));
1003                 rc = -ENODEV;
1004                 goto out_free_attr;
1005         }
1006
1007         if (attr->count > MSPRO_BLOCK_MAX_ATTRIBUTES) {
1008                 printk(KERN_WARNING "%s: way too many attribute entries\n",
1009                        dev_name(&card->dev));
1010                 attr_count = MSPRO_BLOCK_MAX_ATTRIBUTES;
1011         } else
1012                 attr_count = attr->count;
1013
1014         msb->attr_group.attrs = kzalloc((attr_count + 1)
1015                                         * sizeof(struct attribute),
1016                                         GFP_KERNEL);
1017         if (!msb->attr_group.attrs) {
1018                 rc = -ENOMEM;
1019                 goto out_free_attr;
1020         }
1021         msb->attr_group.name = "media_attributes";
1022
1023         buffer = kmalloc(msb->page_size, GFP_KERNEL);
1024         if (!buffer) {
1025                 rc = -ENOMEM;
1026                 goto out_free_attr;
1027         }
1028         memcpy(buffer, (char *)attr, msb->page_size);
1029         page_count = 1;
1030
1031         for (cnt = 0; cnt < attr_count; ++cnt) {
1032                 s_attr = kzalloc(sizeof(struct mspro_sys_attr), GFP_KERNEL);
1033                 if (!s_attr) {
1034                         rc = -ENOMEM;
1035                         goto out_free_buffer;
1036                 }
1037
1038                 msb->attr_group.attrs[cnt] = &s_attr->dev_attr.attr;
1039                 addr = be32_to_cpu(attr->entries[cnt].address);
1040                 rc = be32_to_cpu(attr->entries[cnt].size);
1041                 dev_dbg(&card->dev, "adding attribute %d: id %x, address %x, "
1042                         "size %x\n", cnt, attr->entries[cnt].id, addr, rc);
1043                 s_attr->id = attr->entries[cnt].id;
1044                 if (mspro_block_attr_name(s_attr->id))
1045                         snprintf(s_attr->name, sizeof(s_attr->name), "%s",
1046                                  mspro_block_attr_name(attr->entries[cnt].id));
1047                 else
1048                         snprintf(s_attr->name, sizeof(s_attr->name),
1049                                  "attr_x%02x", attr->entries[cnt].id);
1050
1051                 s_attr->dev_attr.attr.name = s_attr->name;
1052                 s_attr->dev_attr.attr.mode = S_IRUGO;
1053                 s_attr->dev_attr.show = mspro_block_attr_show(s_attr->id);
1054
1055                 if (!rc)
1056                         continue;
1057
1058                 s_attr->size = rc;
1059                 s_attr->data = kmalloc(rc, GFP_KERNEL);
1060                 if (!s_attr->data) {
1061                         rc = -ENOMEM;
1062                         goto out_free_buffer;
1063                 }
1064
1065                 if (((addr / msb->page_size)
1066                      == be32_to_cpu(param.data_address))
1067                     && (((addr + rc - 1) / msb->page_size)
1068                         == be32_to_cpu(param.data_address))) {
1069                         memcpy(s_attr->data, buffer + addr % msb->page_size,
1070                                rc);
1071                         continue;
1072                 }
1073
1074                 if (page_count <= (rc / msb->page_size)) {
1075                         kfree(buffer);
1076                         page_count = (rc / msb->page_size) + 1;
1077                         buffer = kmalloc(page_count * msb->page_size,
1078                                          GFP_KERNEL);
1079                         if (!buffer) {
1080                                 rc = -ENOMEM;
1081                                 goto out_free_attr;
1082                         }
1083                 }
1084
1085                 param.system = msb->system;
1086                 param.data_count = cpu_to_be16((rc / msb->page_size) + 1);
1087                 param.data_address = cpu_to_be32(addr / msb->page_size);
1088                 param.tpc_param = 0;
1089
1090                 sg_init_one(&msb->req_sg[0], buffer,
1091                             be16_to_cpu(param.data_count) * msb->page_size);
1092                 msb->seg_count = 1;
1093                 msb->current_seg = 0;
1094                 msb->current_page = 0;
1095                 msb->data_dir = READ;
1096                 msb->transfer_cmd = MSPRO_CMD_READ_ATRB;
1097
1098                 dev_dbg(&card->dev, "reading attribute pages %x, %x\n",
1099                         be32_to_cpu(param.data_address),
1100                         be16_to_cpu(param.data_count));
1101
1102                 card->next_request = h_mspro_block_req_init;
1103                 msb->mrq_handler = h_mspro_block_transfer_data;
1104                 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG,
1105                                   (char *)&param, sizeof(param));
1106                 memstick_new_req(card->host);
1107                 wait_for_completion(&card->mrq_complete);
1108                 if (card->current_mrq.error) {
1109                         rc = card->current_mrq.error;
1110                         goto out_free_buffer;
1111                 }
1112
1113                 memcpy(s_attr->data, buffer + addr % msb->page_size, rc);
1114         }
1115
1116         rc = 0;
1117 out_free_buffer:
1118         kfree(buffer);
1119 out_free_attr:
1120         kfree(attr);
1121         return rc;
1122 }
1123
1124 static int mspro_block_init_card(struct memstick_dev *card)
1125 {
1126         struct mspro_block_data *msb = memstick_get_drvdata(card);
1127         struct memstick_host *host = card->host;
1128         int rc = 0;
1129
1130         msb->system = MEMSTICK_SYS_SERIAL;
1131         card->reg_addr.r_offset = offsetof(struct mspro_register, status);
1132         card->reg_addr.r_length = sizeof(struct ms_status_register);
1133         card->reg_addr.w_offset = offsetof(struct mspro_register, param);
1134         card->reg_addr.w_length = sizeof(struct mspro_param_register);
1135
1136         if (memstick_set_rw_addr(card))
1137                 return -EIO;
1138
1139         msb->caps = host->caps;
1140
1141         msleep(150);
1142         rc = mspro_block_wait_for_ced(card);
1143         if (rc)
1144                 return rc;
1145
1146         rc = mspro_block_switch_interface(card);
1147         if (rc)
1148                 return rc;
1149
1150         dev_dbg(&card->dev, "card activated\n");
1151         if (msb->system != MEMSTICK_SYS_SERIAL)
1152                 msb->caps |= MEMSTICK_CAP_AUTO_GET_INT;
1153
1154         card->next_request = h_mspro_block_req_init;
1155         msb->mrq_handler = h_mspro_block_get_ro;
1156         memstick_init_req(&card->current_mrq, MS_TPC_READ_REG, NULL,
1157                           sizeof(struct ms_status_register));
1158         memstick_new_req(card->host);
1159         wait_for_completion(&card->mrq_complete);
1160         if (card->current_mrq.error)
1161                 return card->current_mrq.error;
1162
1163         dev_dbg(&card->dev, "card r/w status %d\n", msb->read_only ? 0 : 1);
1164
1165         msb->page_size = 512;
1166         rc = mspro_block_read_attributes(card);
1167         if (rc)
1168                 return rc;
1169
1170         dev_dbg(&card->dev, "attributes loaded\n");
1171         return 0;
1172
1173 }
1174
1175 static int mspro_block_init_disk(struct memstick_dev *card)
1176 {
1177         struct mspro_block_data *msb = memstick_get_drvdata(card);
1178         struct memstick_host *host = card->host;
1179         struct mspro_devinfo *dev_info = NULL;
1180         struct mspro_sys_info *sys_info = NULL;
1181         struct mspro_sys_attr *s_attr = NULL;
1182         int rc, disk_id;
1183         u64 limit = BLK_BOUNCE_HIGH;
1184         unsigned long capacity;
1185
1186         if (host->dev.dma_mask && *(host->dev.dma_mask))
1187                 limit = *(host->dev.dma_mask);
1188
1189         for (rc = 0; msb->attr_group.attrs[rc]; ++rc) {
1190                 s_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[rc]);
1191
1192                 if (s_attr->id == MSPRO_BLOCK_ID_DEVINFO)
1193                         dev_info = s_attr->data;
1194                 else if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO)
1195                         sys_info = s_attr->data;
1196         }
1197
1198         if (!dev_info || !sys_info)
1199                 return -ENODEV;
1200
1201         msb->cylinders = be16_to_cpu(dev_info->cylinders);
1202         msb->heads = be16_to_cpu(dev_info->heads);
1203         msb->sectors_per_track = be16_to_cpu(dev_info->sectors_per_track);
1204
1205         msb->page_size = be16_to_cpu(sys_info->unit_size);
1206
1207         if (!idr_pre_get(&mspro_block_disk_idr, GFP_KERNEL))
1208                 return -ENOMEM;
1209
1210         mutex_lock(&mspro_block_disk_lock);
1211         rc = idr_get_new(&mspro_block_disk_idr, card, &disk_id);
1212         mutex_unlock(&mspro_block_disk_lock);
1213
1214         if (rc)
1215                 return rc;
1216
1217         if ((disk_id << MSPRO_BLOCK_PART_SHIFT) > 255) {
1218                 rc = -ENOSPC;
1219                 goto out_release_id;
1220         }
1221
1222         msb->disk = alloc_disk(1 << MSPRO_BLOCK_PART_SHIFT);
1223         if (!msb->disk) {
1224                 rc = -ENOMEM;
1225                 goto out_release_id;
1226         }
1227
1228         msb->queue = blk_init_queue(mspro_block_submit_req, &msb->q_lock);
1229         if (!msb->queue) {
1230                 rc = -ENOMEM;
1231                 goto out_put_disk;
1232         }
1233
1234         msb->queue->queuedata = card;
1235         blk_queue_prep_rq(msb->queue, mspro_block_prepare_req);
1236
1237         blk_queue_bounce_limit(msb->queue, limit);
1238         blk_queue_max_hw_sectors(msb->queue, MSPRO_BLOCK_MAX_PAGES);
1239         blk_queue_max_segments(msb->queue, MSPRO_BLOCK_MAX_SEGS);
1240         blk_queue_max_segment_size(msb->queue,
1241                                    MSPRO_BLOCK_MAX_PAGES * msb->page_size);
1242
1243         msb->disk->major = major;
1244         msb->disk->first_minor = disk_id << MSPRO_BLOCK_PART_SHIFT;
1245         msb->disk->fops = &ms_block_bdops;
1246         msb->usage_count = 1;
1247         msb->disk->private_data = msb;
1248         msb->disk->queue = msb->queue;
1249         msb->disk->driverfs_dev = &card->dev;
1250
1251         sprintf(msb->disk->disk_name, "mspblk%d", disk_id);
1252
1253         blk_queue_logical_block_size(msb->queue, msb->page_size);
1254
1255         capacity = be16_to_cpu(sys_info->user_block_count);
1256         capacity *= be16_to_cpu(sys_info->block_size);
1257         capacity *= msb->page_size >> 9;
1258         set_capacity(msb->disk, capacity);
1259         dev_dbg(&card->dev, "capacity set %ld\n", capacity);
1260
1261         add_disk(msb->disk);
1262         msb->active = 1;
1263         return 0;
1264
1265 out_put_disk:
1266         put_disk(msb->disk);
1267 out_release_id:
1268         mutex_lock(&mspro_block_disk_lock);
1269         idr_remove(&mspro_block_disk_idr, disk_id);
1270         mutex_unlock(&mspro_block_disk_lock);
1271         return rc;
1272 }
1273
1274 static void mspro_block_data_clear(struct mspro_block_data *msb)
1275 {
1276         int cnt;
1277         struct mspro_sys_attr *s_attr;
1278
1279         if (msb->attr_group.attrs) {
1280                 for (cnt = 0; msb->attr_group.attrs[cnt]; ++cnt) {
1281                         s_attr = mspro_from_sysfs_attr(msb->attr_group
1282                                                            .attrs[cnt]);
1283                         kfree(s_attr->data);
1284                         kfree(s_attr);
1285                 }
1286                 kfree(msb->attr_group.attrs);
1287         }
1288
1289         msb->card = NULL;
1290 }
1291
1292 static int mspro_block_check_card(struct memstick_dev *card)
1293 {
1294         struct mspro_block_data *msb = memstick_get_drvdata(card);
1295
1296         return (msb->active == 1);
1297 }
1298
1299 static int mspro_block_probe(struct memstick_dev *card)
1300 {
1301         struct mspro_block_data *msb;
1302         int rc = 0;
1303
1304         msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL);
1305         if (!msb)
1306                 return -ENOMEM;
1307         memstick_set_drvdata(card, msb);
1308         msb->card = card;
1309         spin_lock_init(&msb->q_lock);
1310
1311         rc = mspro_block_init_card(card);
1312
1313         if (rc)
1314                 goto out_free;
1315
1316         rc = sysfs_create_group(&card->dev.kobj, &msb->attr_group);
1317         if (rc)
1318                 goto out_free;
1319
1320         rc = mspro_block_init_disk(card);
1321         if (!rc) {
1322                 card->check = mspro_block_check_card;
1323                 card->stop = mspro_block_stop;
1324                 card->start = mspro_block_start;
1325                 return 0;
1326         }
1327
1328         sysfs_remove_group(&card->dev.kobj, &msb->attr_group);
1329 out_free:
1330         memstick_set_drvdata(card, NULL);
1331         mspro_block_data_clear(msb);
1332         kfree(msb);
1333         return rc;
1334 }
1335
1336 static void mspro_block_remove(struct memstick_dev *card)
1337 {
1338         struct mspro_block_data *msb = memstick_get_drvdata(card);
1339         unsigned long flags;
1340
1341         del_gendisk(msb->disk);
1342         dev_dbg(&card->dev, "mspro block remove\n");
1343         spin_lock_irqsave(&msb->q_lock, flags);
1344         msb->eject = 1;
1345         blk_start_queue(msb->queue);
1346         spin_unlock_irqrestore(&msb->q_lock, flags);
1347
1348         blk_cleanup_queue(msb->queue);
1349         msb->queue = NULL;
1350
1351         sysfs_remove_group(&card->dev.kobj, &msb->attr_group);
1352
1353         mutex_lock(&mspro_block_disk_lock);
1354         mspro_block_data_clear(msb);
1355         mutex_unlock(&mspro_block_disk_lock);
1356
1357         mspro_block_disk_release(msb->disk);
1358         memstick_set_drvdata(card, NULL);
1359 }
1360
1361 #ifdef CONFIG_PM
1362
1363 static int mspro_block_suspend(struct memstick_dev *card, pm_message_t state)
1364 {
1365         struct mspro_block_data *msb = memstick_get_drvdata(card);
1366         unsigned long flags;
1367
1368         spin_lock_irqsave(&msb->q_lock, flags);
1369         blk_stop_queue(msb->queue);
1370         msb->active = 0;
1371         spin_unlock_irqrestore(&msb->q_lock, flags);
1372
1373         return 0;
1374 }
1375
1376 static int mspro_block_resume(struct memstick_dev *card)
1377 {
1378         struct mspro_block_data *msb = memstick_get_drvdata(card);
1379         unsigned long flags;
1380         int rc = 0;
1381
1382 #ifdef CONFIG_MEMSTICK_UNSAFE_RESUME
1383
1384         struct mspro_block_data *new_msb;
1385         struct memstick_host *host = card->host;
1386         struct mspro_sys_attr *s_attr, *r_attr;
1387         unsigned char cnt;
1388
1389         mutex_lock(&host->lock);
1390         new_msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL);
1391         if (!new_msb) {
1392                 rc = -ENOMEM;
1393                 goto out_unlock;
1394         }
1395
1396         new_msb->card = card;
1397         memstick_set_drvdata(card, new_msb);
1398         if (mspro_block_init_card(card))
1399                 goto out_free;
1400
1401         for (cnt = 0; new_msb->attr_group.attrs[cnt]
1402                       && msb->attr_group.attrs[cnt]; ++cnt) {
1403                 s_attr = mspro_from_sysfs_attr(new_msb->attr_group.attrs[cnt]);
1404                 r_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[cnt]);
1405
1406                 if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO
1407                     && r_attr->id == s_attr->id) {
1408                         if (memcmp(s_attr->data, r_attr->data, s_attr->size))
1409                                 break;
1410
1411                         msb->active = 1;
1412                         break;
1413                 }
1414         }
1415
1416 out_free:
1417         memstick_set_drvdata(card, msb);
1418         mspro_block_data_clear(new_msb);
1419         kfree(new_msb);
1420 out_unlock:
1421         mutex_unlock(&host->lock);
1422
1423 #endif /* CONFIG_MEMSTICK_UNSAFE_RESUME */
1424
1425         spin_lock_irqsave(&msb->q_lock, flags);
1426         blk_start_queue(msb->queue);
1427         spin_unlock_irqrestore(&msb->q_lock, flags);
1428         return rc;
1429 }
1430
1431 #else
1432
1433 #define mspro_block_suspend NULL
1434 #define mspro_block_resume NULL
1435
1436 #endif /* CONFIG_PM */
1437
1438 static struct memstick_device_id mspro_block_id_tbl[] = {
1439         {MEMSTICK_MATCH_ALL, MEMSTICK_TYPE_PRO, MEMSTICK_CATEGORY_STORAGE_DUO,
1440          MEMSTICK_CLASS_DUO},
1441         {}
1442 };
1443
1444
1445 static struct memstick_driver mspro_block_driver = {
1446         .driver = {
1447                 .name  = DRIVER_NAME,
1448                 .owner = THIS_MODULE
1449         },
1450         .id_table = mspro_block_id_tbl,
1451         .probe    = mspro_block_probe,
1452         .remove   = mspro_block_remove,
1453         .suspend  = mspro_block_suspend,
1454         .resume   = mspro_block_resume
1455 };
1456
1457 static int __init mspro_block_init(void)
1458 {
1459         int rc = -ENOMEM;
1460
1461         rc = register_blkdev(major, DRIVER_NAME);
1462         if (rc < 0) {
1463                 printk(KERN_ERR DRIVER_NAME ": failed to register "
1464                        "major %d, error %d\n", major, rc);
1465                 return rc;
1466         }
1467         if (!major)
1468                 major = rc;
1469
1470         rc = memstick_register_driver(&mspro_block_driver);
1471         if (rc)
1472                 unregister_blkdev(major, DRIVER_NAME);
1473         return rc;
1474 }
1475
1476 static void __exit mspro_block_exit(void)
1477 {
1478         memstick_unregister_driver(&mspro_block_driver);
1479         unregister_blkdev(major, DRIVER_NAME);
1480         idr_destroy(&mspro_block_disk_idr);
1481 }
1482
1483 module_init(mspro_block_init);
1484 module_exit(mspro_block_exit);
1485
1486 MODULE_LICENSE("GPL");
1487 MODULE_AUTHOR("Alex Dubov");
1488 MODULE_DESCRIPTION("Sony MemoryStickPro block device driver");
1489 MODULE_DEVICE_TABLE(memstick, mspro_block_id_tbl);