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/mutex.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
 163         /* Default request setup function for data access method preferred by
 164          * this host instance.
 165          */
 166         void                  (*setup_transfer)(struct memstick_dev *card,
 167                                                 u64 offset, size_t length);
 168
 169         struct attribute_group attr_group;
 170
 171         struct scatterlist    req_sg[MSPRO_BLOCK_MAX_SEGS];
 172         unsigned int          seg_count;
 173         unsigned int          current_seg;
 174         unsigned int          current_page;
 175 };
 176
 177 static DEFINE_IDR(mspro_block_disk_idr);
 178 static DEFINE_MUTEX(mspro_block_disk_lock);
 179
 180 static int mspro_block_complete_req(struct memstick_dev *card, int error);
 181
 182 /*** Block device ***/
 183
 184 static int mspro_block_bd_open(struct block_device *bdev, fmode_t mode)
 185 {
 186         struct gendisk *disk = bdev->bd_disk;
 187         struct mspro_block_data *msb = disk->private_data;
 188         int rc = -ENXIO;
 189
 190         mutex_lock(&mspro_block_disk_lock);
 191
 192         if (msb && msb->card) {
 193                 msb->usage_count++;
 194                 if ((mode & FMODE_WRITE) && msb->read_only)
 195                         rc = -EROFS;
 196                 else
 197                         rc = 0;
 198         }
 199
 200         mutex_unlock(&mspro_block_disk_lock);
 201
 202         return rc;
 203 }
 204
 205
 206 static int mspro_block_disk_release(struct gendisk *disk)
 207 {
 208         struct mspro_block_data *msb = disk->private_data;
 209         int disk_id = MINOR(disk_devt(disk)) >> MSPRO_BLOCK_PART_SHIFT;
 210
 211         mutex_lock(&mspro_block_disk_lock);
 212
 213         if (msb) {
 214                 if (msb->usage_count)
 215                         msb->usage_count--;
 216
 217                 if (!msb->usage_count) {
 218                         kfree(msb);
 219                         disk->private_data = NULL;
 220                         idr_remove(&mspro_block_disk_idr, disk_id);
 221                         put_disk(disk);
 222                 }
 223         }
 224
 225         mutex_unlock(&mspro_block_disk_lock);
 226
 227         return 0;
 228 }
 229
 230 static int mspro_block_bd_release(struct gendisk *disk, fmode_t mode)
 231 {
 232         return mspro_block_disk_release(disk);
 233 }
 234
 235 static int mspro_block_bd_getgeo(struct block_device *bdev,
 236                                  struct hd_geometry *geo)
 237 {
 238         struct mspro_block_data *msb = bdev->bd_disk->private_data;
 239
 240         geo->heads = msb->heads;
 241         geo->sectors = msb->sectors_per_track;
 242         geo->cylinders = msb->cylinders;
 243
 244         return 0;
 245 }
 246
 247 static const struct block_device_operations ms_block_bdops = {
 248         .open    = mspro_block_bd_open,
 249         .release = mspro_block_bd_release,
 250         .getgeo  = mspro_block_bd_getgeo,
 251         .owner   = THIS_MODULE
 252 };
 253
 254 /*** Information ***/
 255
 256 static struct mspro_sys_attr *mspro_from_sysfs_attr(struct attribute *attr)
 257 {
 258         struct device_attribute *dev_attr
 259                 = container_of(attr, struct device_attribute, attr);
 260         return container_of(dev_attr, struct mspro_sys_attr, dev_attr);
 261 }
 262
 263 static const char *mspro_block_attr_name(unsigned char tag)
 264 {
 265         switch (tag) {
 266         case MSPRO_BLOCK_ID_SYSINFO:
 267                 return "attr_sysinfo";
 268         case MSPRO_BLOCK_ID_MODELNAME:
 269                 return "attr_modelname";
 270         case MSPRO_BLOCK_ID_MBR:
 271                 return "attr_mbr";
 272         case MSPRO_BLOCK_ID_PBR16:
 273                 return "attr_pbr16";
 274         case MSPRO_BLOCK_ID_PBR32:
 275                 return "attr_pbr32";
 276         case MSPRO_BLOCK_ID_SPECFILEVALUES1:
 277                 return "attr_specfilevalues1";
 278         case MSPRO_BLOCK_ID_SPECFILEVALUES2:
 279                 return "attr_specfilevalues2";
 280         case MSPRO_BLOCK_ID_DEVINFO:
 281                 return "attr_devinfo";
 282         default:
 283                 return NULL;
 284         };
 285 }
 286
 287 typedef ssize_t (*sysfs_show_t)(struct device *dev,
 288                                 struct device_attribute *attr,
 289                                 char *buffer);
 290
 291 static ssize_t mspro_block_attr_show_default(struct device *dev,
 292                                              struct device_attribute *attr,
 293                                              char *buffer)
 294 {
 295         struct mspro_sys_attr *s_attr = container_of(attr,
 296                                                      struct mspro_sys_attr,
 297                                                      dev_attr);
 298
 299         ssize_t cnt, rc = 0;
 300
 301         for (cnt = 0; cnt < s_attr->size; cnt++) {
 302                 if (cnt && !(cnt % 16)) {
 303                         if (PAGE_SIZE - rc)
 304                                 buffer[rc++] = '\n';
 305                 }
 306
 307                 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "%02x ",
 308                                 ((unsigned char *)s_attr->data)[cnt]);
 309         }
 310         return rc;
 311 }
 312
 313 static ssize_t mspro_block_attr_show_sysinfo(struct device *dev,
 314                                              struct device_attribute *attr,
 315                                              char *buffer)
 316 {
 317         struct mspro_sys_attr *x_attr = container_of(attr,
 318                                                      struct mspro_sys_attr,
 319                                                      dev_attr);
 320         struct mspro_sys_info *x_sys = x_attr->data;
 321         ssize_t rc = 0;
 322         int date_tz = 0, date_tz_f = 0;
 323
 324         if (x_sys->assembly_date[0] > 0x80U) {
 325                 date_tz = (~x_sys->assembly_date[0]) + 1;
 326                 date_tz_f = date_tz & 3;
 327                 date_tz >>= 2;
 328                 date_tz = -date_tz;
 329                 date_tz_f *= 15;
 330         } else if (x_sys->assembly_date[0] < 0x80U) {
 331                 date_tz = x_sys->assembly_date[0];
 332                 date_tz_f = date_tz & 3;
 333                 date_tz >>= 2;
 334                 date_tz_f *= 15;
 335         }
 336
 337         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "class: %x\n",
 338                         x_sys->class);
 339         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "block size: %x\n",
 340                         be16_to_cpu(x_sys->block_size));
 341         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "block count: %x\n",
 342                         be16_to_cpu(x_sys->block_count));
 343         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "user block count: %x\n",
 344                         be16_to_cpu(x_sys->user_block_count));
 345         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "page size: %x\n",
 346                         be16_to_cpu(x_sys->page_size));
 347         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "assembly date: "
 348                         "GMT%+d:%d %04u-%02u-%02u %02u:%02u:%02u\n",
 349                         date_tz, date_tz_f,
 350                         be16_to_cpup((__be16 *)&x_sys->assembly_date[1]),
 351                         x_sys->assembly_date[3], x_sys->assembly_date[4],
 352                         x_sys->assembly_date[5], x_sys->assembly_date[6],
 353                         x_sys->assembly_date[7]);
 354         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "serial number: %x\n",
 355                         be32_to_cpu(x_sys->serial_number));
 356         rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
 357                         "assembly maker code: %x\n",
 358                         x_sys->assembly_maker_code);
 359         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "assembly model code: "
 360                         "%02x%02x%02x\n", x_sys->assembly_model_code[0],
 361                         x_sys->assembly_model_code[1],
 362                         x_sys->assembly_model_code[2]);
 363         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "memory maker code: %x\n",
 364                         be16_to_cpu(x_sys->memory_maker_code));
 365         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "memory model code: %x\n",
 366                         be16_to_cpu(x_sys->memory_model_code));
 367         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "vcc: %x\n",
 368                         x_sys->vcc);
 369         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "vpp: %x\n",
 370                         x_sys->vpp);
 371         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "controller number: %x\n",
 372                         be16_to_cpu(x_sys->controller_number));
 373         rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
 374                         "controller function: %x\n",
 375                         be16_to_cpu(x_sys->controller_function));
 376         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sector: %x\n",
 377                         be16_to_cpu(x_sys->start_sector));
 378         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "unit size: %x\n",
 379                         be16_to_cpu(x_sys->unit_size));
 380         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "sub class: %x\n",
 381                         x_sys->ms_sub_class);
 382         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "interface type: %x\n",
 383                         x_sys->interface_type);
 384         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "controller code: %x\n",
 385                         be16_to_cpu(x_sys->controller_code));
 386         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "format type: %x\n",
 387                         x_sys->format_type);
 388         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "device type: %x\n",
 389                         x_sys->device_type);
 390         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "mspro id: %s\n",
 391                         x_sys->mspro_id);
 392         return rc;
 393 }
 394
 395 static ssize_t mspro_block_attr_show_modelname(struct device *dev,
 396                                                struct device_attribute *attr,
 397                                                char *buffer)
 398 {
 399         struct mspro_sys_attr *s_attr = container_of(attr,
 400                                                      struct mspro_sys_attr,
 401                                                      dev_attr);
 402
 403         return scnprintf(buffer, PAGE_SIZE, "%s", (char *)s_attr->data);
 404 }
 405
 406 static ssize_t mspro_block_attr_show_mbr(struct device *dev,
 407                                          struct device_attribute *attr,
 408                                          char *buffer)
 409 {
 410         struct mspro_sys_attr *x_attr = container_of(attr,
 411                                                      struct mspro_sys_attr,
 412                                                      dev_attr);
 413         struct mspro_mbr *x_mbr = x_attr->data;
 414         ssize_t rc = 0;
 415
 416         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "boot partition: %x\n",
 417                         x_mbr->boot_partition);
 418         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start head: %x\n",
 419                         x_mbr->start_head);
 420         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sector: %x\n",
 421                         x_mbr->start_sector);
 422         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start cylinder: %x\n",
 423                         x_mbr->start_cylinder);
 424         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "partition type: %x\n",
 425                         x_mbr->partition_type);
 426         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end head: %x\n",
 427                         x_mbr->end_head);
 428         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end sector: %x\n",
 429                         x_mbr->end_sector);
 430         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end cylinder: %x\n",
 431                         x_mbr->end_cylinder);
 432         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sectors: %x\n",
 433                         x_mbr->start_sectors);
 434         rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
 435                         "sectors per partition: %x\n",
 436                         x_mbr->sectors_per_partition);
 437         return rc;
 438 }
 439
 440 static ssize_t mspro_block_attr_show_specfile(struct device *dev,
 441                                               struct device_attribute *attr,
 442                                               char *buffer)
 443 {
 444         struct mspro_sys_attr *x_attr = container_of(attr,
 445                                                      struct mspro_sys_attr,
 446                                                      dev_attr);
 447         struct mspro_specfile *x_spfile = x_attr->data;
 448         char name[9], ext[4];
 449         ssize_t rc = 0;
 450
 451         memcpy(name, x_spfile->name, 8);
 452         name[8] = 0;
 453         memcpy(ext, x_spfile->ext, 3);
 454         ext[3] = 0;
 455
 456         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "name: %s\n", name);
 457         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "ext: %s\n", ext);
 458         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "attribute: %x\n",
 459                         x_spfile->attr);
 460         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "time: %d:%d:%d\n",
 461                         x_spfile->time >> 11,
 462                         (x_spfile->time >> 5) & 0x3f,
 463                         (x_spfile->time & 0x1f) * 2);
 464         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "date: %d-%d-%d\n",
 465                         (x_spfile->date >> 9) + 1980,
 466                         (x_spfile->date >> 5) & 0xf,
 467                         x_spfile->date & 0x1f);
 468         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start cluster: %x\n",
 469                         x_spfile->cluster);
 470         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "size: %x\n",
 471                         x_spfile->size);
 472         return rc;
 473 }
 474
 475 static ssize_t mspro_block_attr_show_devinfo(struct device *dev,
 476                                              struct device_attribute *attr,
 477                                              char *buffer)
 478 {
 479         struct mspro_sys_attr *x_attr = container_of(attr,
 480                                                      struct mspro_sys_attr,
 481                                                      dev_attr);
 482         struct mspro_devinfo *x_devinfo = x_attr->data;
 483         ssize_t rc = 0;
 484
 485         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "cylinders: %x\n",
 486                         be16_to_cpu(x_devinfo->cylinders));
 487         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "heads: %x\n",
 488                         be16_to_cpu(x_devinfo->heads));
 489         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "bytes per track: %x\n",
 490                         be16_to_cpu(x_devinfo->bytes_per_track));
 491         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "bytes per sector: %x\n",
 492                         be16_to_cpu(x_devinfo->bytes_per_sector));
 493         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "sectors per track: %x\n",
 494                         be16_to_cpu(x_devinfo->sectors_per_track));
 495         return rc;
 496 }
 497
 498 static sysfs_show_t mspro_block_attr_show(unsigned char tag)
 499 {
 500         switch (tag) {
 501         case MSPRO_BLOCK_ID_SYSINFO:
 502                 return mspro_block_attr_show_sysinfo;
 503         case MSPRO_BLOCK_ID_MODELNAME:
 504                 return mspro_block_attr_show_modelname;
 505         case MSPRO_BLOCK_ID_MBR:
 506                 return mspro_block_attr_show_mbr;
 507         case MSPRO_BLOCK_ID_SPECFILEVALUES1:
 508         case MSPRO_BLOCK_ID_SPECFILEVALUES2:
 509                 return mspro_block_attr_show_specfile;
 510         case MSPRO_BLOCK_ID_DEVINFO:
 511                 return mspro_block_attr_show_devinfo;
 512         default:
 513                 return mspro_block_attr_show_default;
 514         }
 515 }
 516
 517 /*** Protocol handlers ***/
 518
 519 /*
 520  * Functions prefixed with "h_" are protocol callbacks. They can be called from
 521  * interrupt context. Return value of 0 means that request processing is still
 522  * ongoing, while special error value of -EAGAIN means that current request is
 523  * finished (and request processor should come back some time later).
 524  */
 525
 526 static int h_mspro_block_req_init(struct memstick_dev *card,
 527                                   struct memstick_request **mrq)
 528 {
 529         struct mspro_block_data *msb = memstick_get_drvdata(card);
 530
 531         *mrq = &card->current_mrq;
 532         card->next_request = msb->mrq_handler;
 533         return 0;
 534 }
 535
 536 static int h_mspro_block_default(struct memstick_dev *card,
 537                                  struct memstick_request **mrq)
 538 {
 539         return mspro_block_complete_req(card, (*mrq)->error);
 540 }
 541
 542 static int h_mspro_block_default_bad(struct memstick_dev *card,
 543                                      struct memstick_request **mrq)
 544 {
 545         return -ENXIO;
 546 }
 547
 548 static int h_mspro_block_get_ro(struct memstick_dev *card,
 549                                 struct memstick_request **mrq)
 550 {
 551         struct mspro_block_data *msb = memstick_get_drvdata(card);
 552
 553         if (!(*mrq)->error) {
 554                 if ((*mrq)->data[offsetof(struct ms_status_register, status0)]
 555                     & MEMSTICK_STATUS0_WP)
 556                         msb->read_only = 1;
 557                 else
 558                         msb->read_only = 0;
 559         }
 560
 561         return mspro_block_complete_req(card, (*mrq)->error);
 562 }
 563
 564 static int h_mspro_block_wait_for_ced(struct memstick_dev *card,
 565                                       struct memstick_request **mrq)
 566 {
 567         dev_dbg(&card->dev, "wait for ced: value %x\n", (*mrq)->data[0]);
 568
 569         if (!(*mrq)->error) {
 570                 if ((*mrq)->data[0] & (MEMSTICK_INT_CMDNAK | MEMSTICK_INT_ERR))
 571                         (*mrq)->error = -EFAULT;
 572                 else if (!((*mrq)->data[0] & MEMSTICK_INT_CED))
 573                         return 0;
 574         }
 575
 576         return mspro_block_complete_req(card, (*mrq)->error);
 577 }
 578
 579 static int h_mspro_block_transfer_data(struct memstick_dev *card,
 580                                        struct memstick_request **mrq)
 581 {
 582         struct mspro_block_data *msb = memstick_get_drvdata(card);
 583         unsigned char t_val = 0;
 584         struct scatterlist t_sg = { 0 };
 585         size_t t_offset;
 586
 587         if ((*mrq)->error)
 588                 return mspro_block_complete_req(card, (*mrq)->error);
 589
 590         switch ((*mrq)->tpc) {
 591         case MS_TPC_WRITE_REG:
 592                 memstick_init_req(*mrq, MS_TPC_SET_CMD, &msb->transfer_cmd, 1);
 593                 (*mrq)->need_card_int = 1;
 594                 return 0;
 595         case MS_TPC_SET_CMD:
 596                 t_val = (*mrq)->int_reg;
 597                 memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
 598                 if (msb->caps & MEMSTICK_CAP_AUTO_GET_INT)
 599                         goto has_int_reg;
 600                 return 0;
 601         case MS_TPC_GET_INT:
 602                 t_val = (*mrq)->data[0];
 603 has_int_reg:
 604                 if (t_val & (MEMSTICK_INT_CMDNAK | MEMSTICK_INT_ERR)) {
 605                         t_val = MSPRO_CMD_STOP;
 606                         memstick_init_req(*mrq, MS_TPC_SET_CMD, &t_val, 1);
 607                         card->next_request = h_mspro_block_default;
 608                         return 0;
 609                 }
 610
 611                 if (msb->current_page
 612                     == (msb->req_sg[msb->current_seg].length
 613                         / msb->page_size)) {
 614                         msb->current_page = 0;
 615                         msb->current_seg++;
 616
 617                         if (msb->current_seg == msb->seg_count) {
 618                                 if (t_val & MEMSTICK_INT_CED) {
 619                                         return mspro_block_complete_req(card,
 620                                                                         0);
 621                                 } else {
 622                                         card->next_request
 623                                                 = h_mspro_block_wait_for_ced;
 624                                         memstick_init_req(*mrq, MS_TPC_GET_INT,
 625                                                           NULL, 1);
 626                                         return 0;
 627                                 }
 628                         }
 629                 }
 630
 631                 if (!(t_val & MEMSTICK_INT_BREQ)) {
 632                         memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
 633                         return 0;
 634                 }
 635
 636                 t_offset = msb->req_sg[msb->current_seg].offset;
 637                 t_offset += msb->current_page * msb->page_size;
 638
 639                 sg_set_page(&t_sg,
 640                             nth_page(sg_page(&(msb->req_sg[msb->current_seg])),
 641                                      t_offset >> PAGE_SHIFT),
 642                             msb->page_size, offset_in_page(t_offset));
 643
 644                 memstick_init_req_sg(*mrq, msb->data_dir == READ
 645                                            ? MS_TPC_READ_LONG_DATA
 646                                            : MS_TPC_WRITE_LONG_DATA,
 647                                      &t_sg);
 648                 (*mrq)->need_card_int = 1;
 649                 return 0;
 650         case MS_TPC_READ_LONG_DATA:
 651         case MS_TPC_WRITE_LONG_DATA:
 652                 msb->current_page++;
 653                 if (msb->caps & MEMSTICK_CAP_AUTO_GET_INT) {
 654                         t_val = (*mrq)->int_reg;
 655                         goto has_int_reg;
 656                 } else {
 657                         memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
 658                         return 0;
 659                 }
 660
 661         default:
 662                 BUG();
 663         }
 664 }
 665
 666 /*** Transfer setup functions for different access methods. ***/
 667
 668 /** Setup data transfer request for SET_CMD TPC with arguments in card
 669  *  registers.
 670  *
 671  *  @card    Current media instance
 672  *  @offset  Target data offset in bytes
 673  *  @length  Required transfer length in bytes.
 674  */
 675 static void h_mspro_block_setup_cmd(struct memstick_dev *card, u64 offset,
 676                                     size_t length)
 677 {
 678         struct mspro_block_data *msb = memstick_get_drvdata(card);
 679         struct mspro_param_register param = {
 680                 .system = msb->system,
 681                 .data_count = cpu_to_be16((uint16_t)(length / msb->page_size)),
 682                 /* ISO C90 warning precludes direct initialization for now. */
 683                 .data_address = 0,
 684                 .tpc_param = 0
 685         };
 686
 687         do_div(offset, msb->page_size);
 688         param.data_address = cpu_to_be32((uint32_t)offset);
 689
 690         card->next_request = h_mspro_block_req_init;
 691         msb->mrq_handler = h_mspro_block_transfer_data;
 692         memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG,
 693                           &param, sizeof(param));
 694 }
 695
 696 /*** Data transfer ***/
 697
 698 static int mspro_block_issue_req(struct memstick_dev *card, int chunk)
 699 {
 700         struct mspro_block_data *msb = memstick_get_drvdata(card);
 701         u64 t_off;
 702         unsigned int count;
 703
 704 try_again:
 705         while (chunk) {
 706                 msb->current_page = 0;
 707                 msb->current_seg = 0;
 708                 msb->seg_count = blk_rq_map_sg(msb->block_req->q,
 709                                                msb->block_req,
 710                                                msb->req_sg);
 711
 712                 if (!msb->seg_count) {
 713                         chunk = __blk_end_request_cur(msb->block_req, -ENOMEM);
 714                         continue;
 715                 }
 716
 717                 t_off = blk_rq_pos(msb->block_req);
 718                 t_off <<= 9;
 719                 count = blk_rq_bytes(msb->block_req);
 720
 721                 msb->setup_transfer(card, t_off, count);
 722
 723                 msb->data_dir = rq_data_dir(msb->block_req);
 724                 msb->transfer_cmd = msb->data_dir == READ
 725                                     ? MSPRO_CMD_READ_DATA
 726                                     : MSPRO_CMD_WRITE_DATA;
 727
 728                 memstick_new_req(card->host);
 729                 return 0;
 730         }
 731
 732         dev_dbg(&card->dev, "blk_fetch\n");
 733         msb->block_req = blk_fetch_request(msb->queue);
 734         if (!msb->block_req) {
 735                 dev_dbg(&card->dev, "issue end\n");
 736                 return -EAGAIN;
 737         }
 738
 739         dev_dbg(&card->dev, "trying again\n");
 740         chunk = 1;
 741         goto try_again;
 742 }
 743
 744 static int mspro_block_complete_req(struct memstick_dev *card, int error)
 745 {
 746         struct mspro_block_data *msb = memstick_get_drvdata(card);
 747         int chunk, cnt;
 748         unsigned int t_len = 0;
 749         unsigned long flags;
 750
 751         spin_lock_irqsave(&msb->q_lock, flags);
 752         dev_dbg(&card->dev, "complete %d, %d\n", msb->has_request ? 1 : 0,
 753                 error);
 754
 755         if (msb->has_request) {
 756                 /* Nothing to do - not really an error */
 757                 if (error == -EAGAIN)
 758                         error = 0;
 759
 760                 if (error || (card->current_mrq.tpc == MSPRO_CMD_STOP)) {
 761                         if (msb->data_dir == READ) {
 762                                 for (cnt = 0; cnt < msb->current_seg; cnt++)
 763                                         t_len += msb->req_sg[cnt].length
 764                                                  / msb->page_size;
 765
 766                                         if (msb->current_page)
 767                                                 t_len += msb->current_page - 1;
 768
 769                                         t_len *= msb->page_size;
 770                         }
 771                 } else
 772                         t_len = blk_rq_bytes(msb->block_req);
 773
 774                 dev_dbg(&card->dev, "transferred %x (%d)\n", t_len, error);
 775
 776                 if (error && !t_len)
 777                         t_len = blk_rq_cur_bytes(msb->block_req);
 778
 779                 chunk = __blk_end_request(msb->block_req, error, t_len);
 780
 781                 error = mspro_block_issue_req(card, chunk);
 782
 783                 if (!error)
 784                         goto out;
 785                 else
 786                         msb->has_request = 0;
 787         } else {
 788                 if (!error)
 789                         error = -EAGAIN;
 790         }
 791
 792         card->next_request = h_mspro_block_default_bad;
 793         complete_all(&card->mrq_complete);
 794 out:
 795         spin_unlock_irqrestore(&msb->q_lock, flags);
 796         return error;
 797 }
 798
 799 static void mspro_block_stop(struct memstick_dev *card)
 800 {
 801         struct mspro_block_data *msb = memstick_get_drvdata(card);
 802         int rc = 0;
 803         unsigned long flags;
 804
 805         while (1) {
 806                 spin_lock_irqsave(&msb->q_lock, flags);
 807                 if (!msb->has_request) {
 808                         blk_stop_queue(msb->queue);
 809                         rc = 1;
 810                 }
 811                 spin_unlock_irqrestore(&msb->q_lock, flags);
 812
 813                 if (rc)
 814                         break;
 815
 816                 wait_for_completion(&card->mrq_complete);
 817         }
 818 }
 819
 820 static void mspro_block_start(struct memstick_dev *card)
 821 {
 822         struct mspro_block_data *msb = memstick_get_drvdata(card);
 823         unsigned long flags;
 824
 825         spin_lock_irqsave(&msb->q_lock, flags);
 826         blk_start_queue(msb->queue);
 827         spin_unlock_irqrestore(&msb->q_lock, flags);
 828 }
 829
 830 static int mspro_block_prepare_req(struct request_queue *q, struct request *req)
 831 {
 832         if (req->cmd_type != REQ_TYPE_FS &&
 833             req->cmd_type != REQ_TYPE_BLOCK_PC) {
 834                 blk_dump_rq_flags(req, "MSPro unsupported request");
 835                 return BLKPREP_KILL;
 836         }
 837
 838         req->cmd_flags |= REQ_DONTPREP;
 839
 840         return BLKPREP_OK;
 841 }
 842
 843 static void mspro_block_submit_req(struct request_queue *q)
 844 {
 845         struct memstick_dev *card = q->queuedata;
 846         struct mspro_block_data *msb = memstick_get_drvdata(card);
 847         struct request *req = NULL;
 848
 849         if (msb->has_request)
 850                 return;
 851
 852         if (msb->eject) {
 853                 while ((req = blk_fetch_request(q)) != NULL)
 854                         __blk_end_request_all(req, -ENODEV);
 855
 856                 return;
 857         }
 858
 859         msb->has_request = 1;
 860         if (mspro_block_issue_req(card, 0))
 861                 msb->has_request = 0;
 862 }
 863
 864 /*** Initialization ***/
 865
 866 static int mspro_block_wait_for_ced(struct memstick_dev *card)
 867 {
 868         struct mspro_block_data *msb = memstick_get_drvdata(card);
 869
 870         card->next_request = h_mspro_block_req_init;
 871         msb->mrq_handler = h_mspro_block_wait_for_ced;
 872         memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1);
 873         memstick_new_req(card->host);
 874         wait_for_completion(&card->mrq_complete);
 875         return card->current_mrq.error;
 876 }
 877
 878 static int mspro_block_set_interface(struct memstick_dev *card,
 879                                      unsigned char sys_reg)
 880 {
 881         struct memstick_host *host = card->host;
 882         struct mspro_block_data *msb = memstick_get_drvdata(card);
 883         struct mspro_param_register param = {
 884                 .system = sys_reg,
 885                 .data_count = 0,
 886                 .data_address = 0,
 887                 .tpc_param = 0
 888         };
 889
 890         card->next_request = h_mspro_block_req_init;
 891         msb->mrq_handler = h_mspro_block_default;
 892         memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, &param,
 893                           sizeof(param));
 894         memstick_new_req(host);
 895         wait_for_completion(&card->mrq_complete);
 896         return card->current_mrq.error;
 897 }
 898
 899 static int mspro_block_switch_interface(struct memstick_dev *card)
 900 {
 901         struct memstick_host *host = card->host;
 902         struct mspro_block_data *msb = memstick_get_drvdata(card);
 903         int rc = 0;
 904
 905 try_again:
 906         if (msb->caps & MEMSTICK_CAP_PAR4)
 907                 rc = mspro_block_set_interface(card, MEMSTICK_SYS_PAR4);
 908         else
 909                 return 0;
 910
 911         if (rc) {
 912                 printk(KERN_WARNING
 913                        "%s: could not switch to 4-bit mode, error %d\n",
 914                        dev_name(&card->dev), rc);
 915                 return 0;
 916         }
 917
 918         msb->system = MEMSTICK_SYS_PAR4;
 919         host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_PAR4);
 920         printk(KERN_INFO "%s: switching to 4-bit parallel mode\n",
 921                dev_name(&card->dev));
 922
 923         if (msb->caps & MEMSTICK_CAP_PAR8) {
 924                 rc = mspro_block_set_interface(card, MEMSTICK_SYS_PAR8);
 925
 926                 if (!rc) {
 927                         msb->system = MEMSTICK_SYS_PAR8;
 928                         host->set_param(host, MEMSTICK_INTERFACE,
 929                                         MEMSTICK_PAR8);
 930                         printk(KERN_INFO
 931                                "%s: switching to 8-bit parallel mode\n",
 932                                dev_name(&card->dev));
 933                 } else
 934                         printk(KERN_WARNING
 935                                "%s: could not switch to 8-bit mode, error %d\n",
 936                                dev_name(&card->dev), rc);
 937         }
 938
 939         card->next_request = h_mspro_block_req_init;
 940         msb->mrq_handler = h_mspro_block_default;
 941         memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1);
 942         memstick_new_req(card->host);
 943         wait_for_completion(&card->mrq_complete);
 944         rc = card->current_mrq.error;
 945
 946         if (rc) {
 947                 printk(KERN_WARNING
 948                        "%s: interface error, trying to fall back to serial\n",
 949                        dev_name(&card->dev));
 950                 msb->system = MEMSTICK_SYS_SERIAL;
 951                 host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_OFF);
 952                 msleep(10);
 953                 host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_ON);
 954                 host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_SERIAL);
 955
 956                 rc = memstick_set_rw_addr(card);
 957                 if (!rc)
 958                         rc = mspro_block_set_interface(card, msb->system);
 959
 960                 if (!rc) {
 961                         msleep(150);
 962                         rc = mspro_block_wait_for_ced(card);
 963                         if (rc)
 964                                 return rc;
 965
 966                         if (msb->caps & MEMSTICK_CAP_PAR8) {
 967                                 msb->caps &= ~MEMSTICK_CAP_PAR8;
 968                                 goto try_again;
 969                         }
 970                 }
 971         }
 972         return rc;
 973 }
 974
 975 /* Memory allocated for attributes by this function should be freed by
 976  * mspro_block_data_clear, no matter if the initialization process succeeded
 977  * or failed.
 978  */
 979 static int mspro_block_read_attributes(struct memstick_dev *card)
 980 {
 981         struct mspro_block_data *msb = memstick_get_drvdata(card);
 982         struct mspro_attribute *attr = NULL;
 983         struct mspro_sys_attr *s_attr = NULL;
 984         unsigned char *buffer = NULL;
 985         int cnt, rc, attr_count;
 986         /* While normally physical device offsets, represented here by
 987          * attr_offset and attr_len will be of large numeric types, we can be
 988          * sure, that attributes are close enough to the beginning of the
 989          * device, to save ourselves some trouble.
 990          */
 991         unsigned int addr, attr_offset = 0, attr_len = msb->page_size;
 992
 993         attr = kmalloc(msb->page_size, GFP_KERNEL);
 994         if (!attr)
 995                 return -ENOMEM;
 996
 997         sg_init_one(&msb->req_sg[0], attr, msb->page_size);
 998         msb->seg_count = 1;
 999         msb->current_seg = 0;
1000         msb->current_page = 0;
1001         msb->data_dir = READ;
1002         msb->transfer_cmd = MSPRO_CMD_READ_ATRB;
1003
1004         msb->setup_transfer(card, attr_offset, attr_len);
1005
1006         memstick_new_req(card->host);
1007         wait_for_completion(&card->mrq_complete);
1008         if (card->current_mrq.error) {
1009                 rc = card->current_mrq.error;
1010                 goto out_free_attr;
1011         }
1012
1013         if (be16_to_cpu(attr->signature) != MSPRO_BLOCK_SIGNATURE) {
1014                 printk(KERN_ERR "%s: unrecognized device signature %x\n",
1015                        dev_name(&card->dev), be16_to_cpu(attr->signature));
1016                 rc = -ENODEV;
1017                 goto out_free_attr;
1018         }
1019
1020         if (attr->count > MSPRO_BLOCK_MAX_ATTRIBUTES) {
1021                 printk(KERN_WARNING "%s: way too many attribute entries\n",
1022                        dev_name(&card->dev));
1023                 attr_count = MSPRO_BLOCK_MAX_ATTRIBUTES;
1024         } else
1025                 attr_count = attr->count;
1026
1027         msb->attr_group.attrs = kzalloc((attr_count + 1)
1028                                         * sizeof(struct attribute),
1029                                         GFP_KERNEL);
1030         if (!msb->attr_group.attrs) {
1031                 rc = -ENOMEM;
1032                 goto out_free_attr;
1033         }
1034         msb->attr_group.name = "media_attributes";
1035
1036         buffer = kmalloc(attr_len, GFP_KERNEL);
1037         if (!buffer) {
1038                 rc = -ENOMEM;
1039                 goto out_free_attr;
1040         }
1041         memcpy(buffer, (char *)attr, attr_len);
1042
1043         for (cnt = 0; cnt < attr_count; ++cnt) {
1044                 s_attr = kzalloc(sizeof(struct mspro_sys_attr), GFP_KERNEL);
1045                 if (!s_attr) {
1046                         rc = -ENOMEM;
1047                         goto out_free_buffer;
1048                 }
1049
1050                 msb->attr_group.attrs[cnt] = &s_attr->dev_attr.attr;
1051                 addr = be32_to_cpu(attr->entries[cnt].address);
1052                 s_attr->size = be32_to_cpu(attr->entries[cnt].size);
1053                 dev_dbg(&card->dev, "adding attribute %d: id %x, address %x, "
1054                         "size %zx\n", cnt, attr->entries[cnt].id, addr,
1055                         s_attr->size);
1056                 s_attr->id = attr->entries[cnt].id;
1057                 if (mspro_block_attr_name(s_attr->id))
1058                         snprintf(s_attr->name, sizeof(s_attr->name), "%s",
1059                                  mspro_block_attr_name(attr->entries[cnt].id));
1060                 else
1061                         snprintf(s_attr->name, sizeof(s_attr->name),
1062                                  "attr_x%02x", attr->entries[cnt].id);
1063
1064                 sysfs_attr_init(&s_attr->dev_attr.attr);
1065                 s_attr->dev_attr.attr.name = s_attr->name;
1066                 s_attr->dev_attr.attr.mode = S_IRUGO;
1067                 s_attr->dev_attr.show = mspro_block_attr_show(s_attr->id);
1068
1069                 if (!s_attr->size)
1070                         continue;
1071
1072                 s_attr->data = kmalloc(s_attr->size, GFP_KERNEL);
1073                 if (!s_attr->data) {
1074                         rc = -ENOMEM;
1075                         goto out_free_buffer;
1076                 }
1077
1078                 if (((addr / msb->page_size) == (attr_offset / msb->page_size))
1079                     && (((addr + s_attr->size - 1) / msb->page_size)
1080                         == (attr_offset / msb->page_size))) {
1081                         memcpy(s_attr->data, buffer + addr % msb->page_size,
1082                                s_attr->size);
1083                         continue;
1084                 }
1085
1086                 attr_offset = (addr / msb->page_size) * msb->page_size;
1087
1088                 if ((attr_offset + attr_len) < (addr + s_attr->size)) {
1089                         kfree(buffer);
1090                         attr_len = (((addr + s_attr->size) / msb->page_size)
1091                                     + 1 ) * msb->page_size - attr_offset;
1092                         buffer = kmalloc(attr_len, GFP_KERNEL);
1093                         if (!buffer) {
1094                                 rc = -ENOMEM;
1095                                 goto out_free_attr;
1096                         }
1097                 }
1098
1099                 sg_init_one(&msb->req_sg[0], buffer, attr_len);
1100                 msb->seg_count = 1;
1101                 msb->current_seg = 0;
1102                 msb->current_page = 0;
1103                 msb->data_dir = READ;
1104                 msb->transfer_cmd = MSPRO_CMD_READ_ATRB;
1105
1106                 dev_dbg(&card->dev, "reading attribute range %x, %x\n",
1107                         attr_offset, attr_len);
1108
1109                 msb->setup_transfer(card, attr_offset, attr_len);
1110                 memstick_new_req(card->host);
1111                 wait_for_completion(&card->mrq_complete);
1112                 if (card->current_mrq.error) {
1113                         rc = card->current_mrq.error;
1114                         goto out_free_buffer;
1115                 }
1116
1117                 memcpy(s_attr->data, buffer + addr % msb->page_size,
1118                        s_attr->size);
1119         }
1120
1121         rc = 0;
1122 out_free_buffer:
1123         kfree(buffer);
1124 out_free_attr:
1125         kfree(attr);
1126         return rc;
1127 }
1128
1129 static int mspro_block_init_card(struct memstick_dev *card)
1130 {
1131         struct mspro_block_data *msb = memstick_get_drvdata(card);
1132         struct memstick_host *host = card->host;
1133         int rc = 0;
1134
1135         msb->system = MEMSTICK_SYS_SERIAL;
1136         msb->setup_transfer = h_mspro_block_setup_cmd;
1137
1138         card->reg_addr.r_offset = offsetof(struct mspro_register, status);
1139         card->reg_addr.r_length = sizeof(struct ms_status_register);
1140         card->reg_addr.w_offset = offsetof(struct mspro_register, param);
1141         card->reg_addr.w_length = sizeof(struct mspro_param_register);
1142
1143         if (memstick_set_rw_addr(card))
1144                 return -EIO;
1145
1146         msb->caps = host->caps;
1147
1148         msleep(150);
1149         rc = mspro_block_wait_for_ced(card);
1150         if (rc)
1151                 return rc;
1152
1153         rc = mspro_block_switch_interface(card);
1154         if (rc)
1155                 return rc;
1156
1157         dev_dbg(&card->dev, "card activated\n");
1158         if (msb->system != MEMSTICK_SYS_SERIAL)
1159                 msb->caps |= MEMSTICK_CAP_AUTO_GET_INT;
1160
1161         card->next_request = h_mspro_block_req_init;
1162         msb->mrq_handler = h_mspro_block_get_ro;
1163         memstick_init_req(&card->current_mrq, MS_TPC_READ_REG, NULL,
1164                           sizeof(struct ms_status_register));
1165         memstick_new_req(card->host);
1166         wait_for_completion(&card->mrq_complete);
1167         if (card->current_mrq.error)
1168                 return card->current_mrq.error;
1169
1170         dev_dbg(&card->dev, "card r/w status %d\n", msb->read_only ? 0 : 1);
1171
1172         msb->page_size = 512;
1173         rc = mspro_block_read_attributes(card);
1174         if (rc)
1175                 return rc;
1176
1177         dev_dbg(&card->dev, "attributes loaded\n");
1178         return 0;
1179
1180 }
1181
1182 static int mspro_block_init_disk(struct memstick_dev *card)
1183 {
1184         struct mspro_block_data *msb = memstick_get_drvdata(card);
1185         struct memstick_host *host = card->host;
1186         struct mspro_devinfo *dev_info = NULL;
1187         struct mspro_sys_info *sys_info = NULL;
1188         struct mspro_sys_attr *s_attr = NULL;
1189         int rc, disk_id;
1190         u64 limit = BLK_BOUNCE_HIGH;
1191         unsigned long capacity;
1192
1193         if (host->dev.dma_mask && *(host->dev.dma_mask))
1194                 limit = *(host->dev.dma_mask);
1195
1196         for (rc = 0; msb->attr_group.attrs[rc]; ++rc) {
1197                 s_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[rc]);
1198
1199                 if (s_attr->id == MSPRO_BLOCK_ID_DEVINFO)
1200                         dev_info = s_attr->data;
1201                 else if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO)
1202                         sys_info = s_attr->data;
1203         }
1204
1205         if (!dev_info || !sys_info)
1206                 return -ENODEV;
1207
1208         msb->cylinders = be16_to_cpu(dev_info->cylinders);
1209         msb->heads = be16_to_cpu(dev_info->heads);
1210         msb->sectors_per_track = be16_to_cpu(dev_info->sectors_per_track);
1211
1212         msb->page_size = be16_to_cpu(sys_info->unit_size);
1213
1214         mutex_lock(&mspro_block_disk_lock);
1215         if (!idr_pre_get(&mspro_block_disk_idr, GFP_KERNEL)) {
1216                 mutex_unlock(&mspro_block_disk_lock);
1217                 return -ENOMEM;
1218         }
1219
1220         rc = idr_get_new(&mspro_block_disk_idr, card, &disk_id);
1221         mutex_unlock(&mspro_block_disk_lock);
1222
1223         if (rc)
1224                 return rc;
1225
1226         if ((disk_id << MSPRO_BLOCK_PART_SHIFT) > 255) {
1227                 rc = -ENOSPC;
1228                 goto out_release_id;
1229         }
1230
1231         msb->disk = alloc_disk(1 << MSPRO_BLOCK_PART_SHIFT);
1232         if (!msb->disk) {
1233                 rc = -ENOMEM;
1234                 goto out_release_id;
1235         }
1236
1237         msb->queue = blk_init_queue(mspro_block_submit_req, &msb->q_lock);
1238         if (!msb->queue) {
1239                 rc = -ENOMEM;
1240                 goto out_put_disk;
1241         }
1242
1243         msb->queue->queuedata = card;
1244         blk_queue_prep_rq(msb->queue, mspro_block_prepare_req);
1245
1246         blk_queue_bounce_limit(msb->queue, limit);
1247         blk_queue_max_hw_sectors(msb->queue, MSPRO_BLOCK_MAX_PAGES);
1248         blk_queue_max_segments(msb->queue, MSPRO_BLOCK_MAX_SEGS);
1249         blk_queue_max_segment_size(msb->queue,
1250                                    MSPRO_BLOCK_MAX_PAGES * msb->page_size);
1251
1252         msb->disk->major = major;
1253         msb->disk->first_minor = disk_id << MSPRO_BLOCK_PART_SHIFT;
1254         msb->disk->fops = &ms_block_bdops;
1255         msb->usage_count = 1;
1256         msb->disk->private_data = msb;
1257         msb->disk->queue = msb->queue;
1258         msb->disk->driverfs_dev = &card->dev;
1259
1260         sprintf(msb->disk->disk_name, "mspblk%d", disk_id);
1261
1262         blk_queue_logical_block_size(msb->queue, msb->page_size);
1263
1264         capacity = be16_to_cpu(sys_info->user_block_count);
1265         capacity *= be16_to_cpu(sys_info->block_size);
1266         capacity *= msb->page_size >> 9;
1267         set_capacity(msb->disk, capacity);
1268         dev_dbg(&card->dev, "capacity set %ld\n", capacity);
1269
1270         add_disk(msb->disk);
1271         msb->active = 1;
1272         return 0;
1273
1274 out_put_disk:
1275         put_disk(msb->disk);
1276 out_release_id:
1277         mutex_lock(&mspro_block_disk_lock);
1278         idr_remove(&mspro_block_disk_idr, disk_id);
1279         mutex_unlock(&mspro_block_disk_lock);
1280         return rc;
1281 }
1282
1283 static void mspro_block_data_clear(struct mspro_block_data *msb)
1284 {
1285         int cnt;
1286         struct mspro_sys_attr *s_attr;
1287
1288         if (msb->attr_group.attrs) {
1289                 for (cnt = 0; msb->attr_group.attrs[cnt]; ++cnt) {
1290                         s_attr = mspro_from_sysfs_attr(msb->attr_group
1291                                                            .attrs[cnt]);
1292                         kfree(s_attr->data);
1293                         kfree(s_attr);
1294                 }
1295                 kfree(msb->attr_group.attrs);
1296         }
1297
1298         msb->card = NULL;
1299 }
1300
1301 static int mspro_block_check_card(struct memstick_dev *card)
1302 {
1303         struct mspro_block_data *msb = memstick_get_drvdata(card);
1304
1305         return (msb->active == 1);
1306 }
1307
1308 static int mspro_block_probe(struct memstick_dev *card)
1309 {
1310         struct mspro_block_data *msb;
1311         int rc = 0;
1312
1313         msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL);
1314         if (!msb)
1315                 return -ENOMEM;
1316         memstick_set_drvdata(card, msb);
1317         msb->card = card;
1318         spin_lock_init(&msb->q_lock);
1319
1320         rc = mspro_block_init_card(card);
1321
1322         if (rc)
1323                 goto out_free;
1324
1325         rc = sysfs_create_group(&card->dev.kobj, &msb->attr_group);
1326         if (rc)
1327                 goto out_free;
1328
1329         rc = mspro_block_init_disk(card);
1330         if (!rc) {
1331                 card->check = mspro_block_check_card;
1332                 card->stop = mspro_block_stop;
1333                 card->start = mspro_block_start;
1334                 return 0;
1335         }
1336
1337         sysfs_remove_group(&card->dev.kobj, &msb->attr_group);
1338 out_free:
1339         memstick_set_drvdata(card, NULL);
1340         mspro_block_data_clear(msb);
1341         kfree(msb);
1342         return rc;
1343 }
1344
1345 static void mspro_block_remove(struct memstick_dev *card)
1346 {
1347         struct mspro_block_data *msb = memstick_get_drvdata(card);
1348         unsigned long flags;
1349
1350         spin_lock_irqsave(&msb->q_lock, flags);
1351         msb->eject = 1;
1352         blk_start_queue(msb->queue);
1353         spin_unlock_irqrestore(&msb->q_lock, flags);
1354
1355         del_gendisk(msb->disk);
1356         dev_dbg(&card->dev, "mspro block remove\n");
1357
1358         blk_cleanup_queue(msb->queue);
1359         msb->queue = NULL;
1360
1361         sysfs_remove_group(&card->dev.kobj, &msb->attr_group);
1362
1363         mutex_lock(&mspro_block_disk_lock);
1364         mspro_block_data_clear(msb);
1365         mutex_unlock(&mspro_block_disk_lock);
1366
1367         mspro_block_disk_release(msb->disk);
1368         memstick_set_drvdata(card, NULL);
1369 }
1370
1371 #ifdef CONFIG_PM
1372
1373 static int mspro_block_suspend(struct memstick_dev *card, pm_message_t state)
1374 {
1375         struct mspro_block_data *msb = memstick_get_drvdata(card);
1376         unsigned long flags;
1377
1378         spin_lock_irqsave(&msb->q_lock, flags);
1379         blk_stop_queue(msb->queue);
1380         msb->active = 0;
1381         spin_unlock_irqrestore(&msb->q_lock, flags);
1382
1383         return 0;
1384 }
1385
1386 static int mspro_block_resume(struct memstick_dev *card)
1387 {
1388         struct mspro_block_data *msb = memstick_get_drvdata(card);
1389         unsigned long flags;
1390         int rc = 0;
1391
1392 #ifdef CONFIG_MEMSTICK_UNSAFE_RESUME
1393
1394         struct mspro_block_data *new_msb;
1395         struct memstick_host *host = card->host;
1396         struct mspro_sys_attr *s_attr, *r_attr;
1397         unsigned char cnt;
1398
1399         mutex_lock(&host->lock);
1400         new_msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL);
1401         if (!new_msb) {
1402                 rc = -ENOMEM;
1403                 goto out_unlock;
1404         }
1405
1406         new_msb->card = card;
1407         memstick_set_drvdata(card, new_msb);
1408         if (mspro_block_init_card(card))
1409                 goto out_free;
1410
1411         for (cnt = 0; new_msb->attr_group.attrs[cnt]
1412                       && msb->attr_group.attrs[cnt]; ++cnt) {
1413                 s_attr = mspro_from_sysfs_attr(new_msb->attr_group.attrs[cnt]);
1414                 r_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[cnt]);
1415
1416                 if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO
1417                     && r_attr->id == s_attr->id) {
1418                         if (memcmp(s_attr->data, r_attr->data, s_attr->size))
1419                                 break;
1420
1421                         msb->active = 1;
1422                         break;
1423                 }
1424         }
1425
1426 out_free:
1427         memstick_set_drvdata(card, msb);
1428         mspro_block_data_clear(new_msb);
1429         kfree(new_msb);
1430 out_unlock:
1431         mutex_unlock(&host->lock);
1432
1433 #endif /* CONFIG_MEMSTICK_UNSAFE_RESUME */
1434
1435         spin_lock_irqsave(&msb->q_lock, flags);
1436         blk_start_queue(msb->queue);
1437         spin_unlock_irqrestore(&msb->q_lock, flags);
1438         return rc;
1439 }
1440
1441 #else
1442
1443 #define mspro_block_suspend NULL
1444 #define mspro_block_resume NULL
1445
1446 #endif /* CONFIG_PM */
1447
1448 static struct memstick_device_id mspro_block_id_tbl[] = {
1449         {MEMSTICK_MATCH_ALL, MEMSTICK_TYPE_PRO, MEMSTICK_CATEGORY_STORAGE_DUO,
1450          MEMSTICK_CLASS_DUO},
1451         {}
1452 };
1453
1454
1455 static struct memstick_driver mspro_block_driver = {
1456         .driver = {
1457                 .name  = DRIVER_NAME,
1458                 .owner = THIS_MODULE
1459         },
1460         .id_table = mspro_block_id_tbl,
1461         .probe    = mspro_block_probe,
1462         .remove   = mspro_block_remove,
1463         .suspend  = mspro_block_suspend,
1464         .resume   = mspro_block_resume
1465 };
1466
1467 static int __init mspro_block_init(void)
1468 {
1469         int rc = -ENOMEM;
1470
1471         rc = register_blkdev(major, DRIVER_NAME);
1472         if (rc < 0) {
1473                 printk(KERN_ERR DRIVER_NAME ": failed to register "
1474                        "major %d, error %d\n", major, rc);
1475                 return rc;
1476         }
1477         if (!major)
1478                 major = rc;
1479
1480         rc = memstick_register_driver(&mspro_block_driver);
1481         if (rc)
1482                 unregister_blkdev(major, DRIVER_NAME);
1483         return rc;
1484 }
1485
1486 static void __exit mspro_block_exit(void)
1487 {
1488         memstick_unregister_driver(&mspro_block_driver);
1489         unregister_blkdev(major, DRIVER_NAME);
1490         idr_destroy(&mspro_block_disk_idr);
1491 }
1492
1493 module_init(mspro_block_init);
1494 module_exit(mspro_block_exit);
1495
1496 MODULE_LICENSE("GPL");
1497 MODULE_AUTHOR("Alex Dubov");
1498 MODULE_DESCRIPTION("Sony MemoryStickPro block device driver");
1499 MODULE_DEVICE_TABLE(memstick, mspro_block_id_tbl);