drivers/memstick/core/mspro_block.c

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