err.no Git - linux-2.6/blob - drivers/memstick/core/mspro_block.c

   1 /*
   2  *  Sony MemoryStick Pro storage support
   3  *
   4  *  Copyright (C) 2007 Alex Dubov <oakad@yahoo.com>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  *
  10  * Special thanks to Carlos Corbacho for providing various MemoryStick cards
  11  * that made this driver possible.
  12  *
  13  */
  14
  15 #include <linux/blkdev.h>
  16 #include <linux/idr.h>
  17 #include <linux/hdreg.h>
  18 #include <linux/kthread.h>
  19 #include <linux/memstick.h>
  20
  21 #define DRIVER_NAME "mspro_block"
  22
  23 static int major;
  24 module_param(major, int, 0644);
  25
  26 #define MSPRO_BLOCK_MAX_SEGS  32
  27 #define MSPRO_BLOCK_MAX_PAGES ((2 << 16) - 1)
  28
  29 #define MSPRO_BLOCK_SIGNATURE        0xa5c3
  30 #define MSPRO_BLOCK_MAX_ATTRIBUTES   41
  31
  32 enum {
  33         MSPRO_BLOCK_ID_SYSINFO         = 0x10,
  34         MSPRO_BLOCK_ID_MODELNAME       = 0x15,
  35         MSPRO_BLOCK_ID_MBR             = 0x20,
  36         MSPRO_BLOCK_ID_PBR16           = 0x21,
  37         MSPRO_BLOCK_ID_PBR32           = 0x22,
  38         MSPRO_BLOCK_ID_SPECFILEVALUES1 = 0x25,
  39         MSPRO_BLOCK_ID_SPECFILEVALUES2 = 0x26,
  40         MSPRO_BLOCK_ID_DEVINFO         = 0x30
  41 };
  42
  43 struct mspro_sys_attr {
  44         size_t                  size;
  45         void                    *data;
  46         unsigned char           id;
  47         char                    name[32];
  48         struct device_attribute dev_attr;
  49 };
  50
  51 struct mspro_attr_entry {
  52         unsigned int  address;
  53         unsigned int  size;
  54         unsigned char id;
  55         unsigned char reserved[3];
  56 } __attribute__((packed));
  57
  58 struct mspro_attribute {
  59         unsigned short          signature;
  60         unsigned short          version;
  61         unsigned char           count;
  62         unsigned char           reserved[11];
  63         struct mspro_attr_entry entries[];
  64 } __attribute__((packed));
  65
  66 struct mspro_sys_info {
  67         unsigned char  class;
  68         unsigned char  reserved0;
  69         unsigned short block_size;
  70         unsigned short block_count;
  71         unsigned short user_block_count;
  72         unsigned short page_size;
  73         unsigned char  reserved1[2];
  74         unsigned char  assembly_date[8];
  75         unsigned int   serial_number;
  76         unsigned char  assembly_maker_code;
  77         unsigned char  assembly_model_code[3];
  78         unsigned short memory_maker_code;
  79         unsigned short memory_model_code;
  80         unsigned char  reserved2[4];
  81         unsigned char  vcc;
  82         unsigned char  vpp;
  83         unsigned short controller_number;
  84         unsigned short controller_function;
  85         unsigned short start_sector;
  86         unsigned short unit_size;
  87         unsigned char  ms_sub_class;
  88         unsigned char  reserved3[4];
  89         unsigned char  interface_type;
  90         unsigned short controller_code;
  91         unsigned char  format_type;
  92         unsigned char  reserved4;
  93         unsigned char  device_type;
  94         unsigned char  reserved5[7];
  95         unsigned char  mspro_id[16];
  96         unsigned char  reserved6[16];
  97 } __attribute__((packed));
  98
  99 struct mspro_mbr {
 100         unsigned char boot_partition;
 101         unsigned char start_head;
 102         unsigned char start_sector;
 103         unsigned char start_cylinder;
 104         unsigned char partition_type;
 105         unsigned char end_head;
 106         unsigned char end_sector;
 107         unsigned char end_cylinder;
 108         unsigned int  start_sectors;
 109         unsigned int  sectors_per_partition;
 110 } __attribute__((packed));
 111
 112 struct mspro_devinfo {
 113         unsigned short cylinders;
 114         unsigned short heads;
 115         unsigned short bytes_per_track;
 116         unsigned short bytes_per_sector;
 117         unsigned short sectors_per_track;
 118         unsigned char  reserved[6];
 119 } __attribute__((packed));
 120
 121 struct mspro_block_data {
 122         struct memstick_dev   *card;
 123         unsigned int          usage_count;
 124         struct gendisk        *disk;
 125         struct request_queue  *queue;
 126         spinlock_t            q_lock;
 127         wait_queue_head_t     q_wait;
 128         struct task_struct    *q_thread;
 129
 130         unsigned short        page_size;
 131         unsigned short        cylinders;
 132         unsigned short        heads;
 133         unsigned short        sectors_per_track;
 134
 135         unsigned char         system;
 136         unsigned char         read_only:1,
 137                               active:1,
 138                               has_request:1,
 139                               data_dir:1;
 140         unsigned char         transfer_cmd;
 141
 142         int                   (*mrq_handler)(struct memstick_dev *card,
 143                                              struct memstick_request **mrq);
 144
 145         struct attribute_group attr_group;
 146
 147         struct scatterlist    req_sg[MSPRO_BLOCK_MAX_SEGS];
 148         unsigned int          seg_count;
 149         unsigned int          current_seg;
 150         unsigned short        current_page;
 151 };
 152
 153 static DEFINE_IDR(mspro_block_disk_idr);
 154 static DEFINE_MUTEX(mspro_block_disk_lock);
 155
 156 /*** Block device ***/
 157
 158 static int mspro_block_bd_open(struct inode *inode, struct file *filp)
 159 {
 160         struct gendisk *disk = inode->i_bdev->bd_disk;
 161         struct mspro_block_data *msb = disk->private_data;
 162         int rc = -ENXIO;
 163
 164         mutex_lock(&mspro_block_disk_lock);
 165
 166         if (msb && msb->card) {
 167                 msb->usage_count++;
 168                 if ((filp->f_mode & FMODE_WRITE) && msb->read_only)
 169                         rc = -EROFS;
 170                 else
 171                         rc = 0;
 172         }
 173
 174         mutex_unlock(&mspro_block_disk_lock);
 175
 176         return rc;
 177 }
 178
 179
 180 static int mspro_block_disk_release(struct gendisk *disk)
 181 {
 182         struct mspro_block_data *msb = disk->private_data;
 183         int disk_id = disk->first_minor >> MEMSTICK_PART_SHIFT;
 184
 185         mutex_lock(&mspro_block_disk_lock);
 186
 187         if (msb->usage_count) {
 188                 msb->usage_count--;
 189                 if (!msb->usage_count) {
 190                         kfree(msb);
 191                         disk->private_data = NULL;
 192                         idr_remove(&mspro_block_disk_idr, disk_id);
 193                         put_disk(disk);
 194                 }
 195         }
 196
 197         mutex_unlock(&mspro_block_disk_lock);
 198
 199         return 0;
 200 }
 201
 202 static int mspro_block_bd_release(struct inode *inode, struct file *filp)
 203 {
 204         struct gendisk *disk = inode->i_bdev->bd_disk;
 205         return mspro_block_disk_release(disk);
 206 }
 207
 208 static int mspro_block_bd_getgeo(struct block_device *bdev,
 209                                  struct hd_geometry *geo)
 210 {
 211         struct mspro_block_data *msb = bdev->bd_disk->private_data;
 212
 213         geo->heads = msb->heads;
 214         geo->sectors = msb->sectors_per_track;
 215         geo->cylinders = msb->cylinders;
 216
 217         return 0;
 218 }
 219
 220 static struct block_device_operations ms_block_bdops = {
 221         .open    = mspro_block_bd_open,
 222         .release = mspro_block_bd_release,
 223         .getgeo  = mspro_block_bd_getgeo,
 224         .owner   = THIS_MODULE
 225 };
 226
 227 /*** Information ***/
 228
 229 static struct mspro_sys_attr *mspro_from_sysfs_attr(struct attribute *attr)
 230 {
 231         struct device_attribute *dev_attr
 232                 = container_of(attr, struct device_attribute, attr);
 233         return container_of(dev_attr, struct mspro_sys_attr, dev_attr);
 234 }
 235
 236 static const char *mspro_block_attr_name(unsigned char tag)
 237 {
 238         switch (tag) {
 239         case MSPRO_BLOCK_ID_SYSINFO:
 240                 return "attr_sysinfo";
 241         case MSPRO_BLOCK_ID_MODELNAME:
 242                 return "attr_modelname";
 243         case MSPRO_BLOCK_ID_MBR:
 244                 return "attr_mbr";
 245         case MSPRO_BLOCK_ID_PBR16:
 246                 return "attr_pbr16";
 247         case MSPRO_BLOCK_ID_PBR32:
 248                 return "attr_pbr32";
 249         case MSPRO_BLOCK_ID_SPECFILEVALUES1:
 250                 return "attr_specfilevalues1";
 251         case MSPRO_BLOCK_ID_SPECFILEVALUES2:
 252                 return "attr_specfilevalues2";
 253         case MSPRO_BLOCK_ID_DEVINFO:
 254                 return "attr_devinfo";
 255         default:
 256                 return NULL;
 257         };
 258 }
 259
 260 typedef ssize_t (*sysfs_show_t)(struct device *dev,
 261                                 struct device_attribute *attr,
 262                                 char *buffer);
 263
 264 static ssize_t mspro_block_attr_show_default(struct device *dev,
 265                                              struct device_attribute *attr,
 266                                              char *buffer)
 267 {
 268         struct mspro_sys_attr *s_attr = container_of(attr,
 269                                                      struct mspro_sys_attr,
 270                                                      dev_attr);
 271
 272         ssize_t cnt, rc = 0;
 273
 274         for (cnt = 0; cnt < s_attr->size; cnt++) {
 275                 if (cnt && !(cnt % 16)) {
 276                         if (PAGE_SIZE - rc)
 277                                 buffer[rc++] = '\n';
 278                 }
 279
 280                 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "%02x ",
 281                                 ((unsigned char *)s_attr->data)[cnt]);
 282         }
 283         return rc;
 284 }
 285
 286 static ssize_t mspro_block_attr_show_sysinfo(struct device *dev,
 287                                              struct device_attribute *attr,
 288                                              char *buffer)
 289 {
 290         struct mspro_sys_attr *x_attr = container_of(attr,
 291                                                      struct mspro_sys_attr,
 292                                                      dev_attr);
 293         struct mspro_sys_info *x_sys = x_attr->data;
 294         ssize_t rc = 0;
 295
 296         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "class: %x\n",
 297                         x_sys->class);
 298         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "block size: %x\n",
 299                         be16_to_cpu(x_sys->block_size));
 300         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "block count: %x\n",
 301                         be16_to_cpu(x_sys->block_count));
 302         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "user block count: %x\n",
 303                         be16_to_cpu(x_sys->user_block_count));
 304         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "page size: %x\n",
 305                         be16_to_cpu(x_sys->page_size));
 306         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "assembly date: "
 307                         "%d %04u-%02u-%02u %02u:%02u:%02u\n",
 308                         x_sys->assembly_date[0],
 309                         be16_to_cpu(*(unsigned short *)
 310                                     &x_sys->assembly_date[1]),
 311                         x_sys->assembly_date[3], x_sys->assembly_date[4],
 312                         x_sys->assembly_date[5], x_sys->assembly_date[6],
 313                         x_sys->assembly_date[7]);
 314         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "serial number: %x\n",
 315                         be32_to_cpu(x_sys->serial_number));
 316         rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
 317                         "assembly maker code: %x\n",
 318                         x_sys->assembly_maker_code);
 319         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "assembly model code: "
 320                         "%02x%02x%02x\n", x_sys->assembly_model_code[0],
 321                         x_sys->assembly_model_code[1],
 322                         x_sys->assembly_model_code[2]);
 323         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "memory maker code: %x\n",
 324                         be16_to_cpu(x_sys->memory_maker_code));
 325         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "memory model code: %x\n",
 326                         be16_to_cpu(x_sys->memory_model_code));
 327         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "vcc: %x\n",
 328                         x_sys->vcc);
 329         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "vpp: %x\n",
 330                         x_sys->vpp);
 331         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "controller number: %x\n",
 332                         be16_to_cpu(x_sys->controller_number));
 333         rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
 334                         "controller function: %x\n",
 335                         be16_to_cpu(x_sys->controller_function));
 336         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sector: %x\n",
 337                         be16_to_cpu(x_sys->start_sector));
 338         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "unit size: %x\n",
 339                         be16_to_cpu(x_sys->unit_size));
 340         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "sub class: %x\n",
 341                         x_sys->ms_sub_class);
 342         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "interface type: %x\n",
 343                         x_sys->interface_type);
 344         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "controller code: %x\n",
 345                         be16_to_cpu(x_sys->controller_code));
 346         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "format type: %x\n",
 347                         x_sys->format_type);
 348         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "device type: %x\n",
 349                         x_sys->device_type);
 350         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "mspro id: %s\n",
 351                         x_sys->mspro_id);
 352         return rc;
 353 }
 354
 355 static ssize_t mspro_block_attr_show_modelname(struct device *dev,
 356                                                struct device_attribute *attr,
 357                                                char *buffer)
 358 {
 359         struct mspro_sys_attr *s_attr = container_of(attr,
 360                                                      struct mspro_sys_attr,
 361                                                      dev_attr);
 362
 363         return scnprintf(buffer, PAGE_SIZE, "%s", (char *)s_attr->data);
 364 }
 365
 366 static ssize_t mspro_block_attr_show_mbr(struct device *dev,
 367                                          struct device_attribute *attr,
 368                                          char *buffer)
 369 {
 370         struct mspro_sys_attr *x_attr = container_of(attr,
 371                                                      struct mspro_sys_attr,
 372                                                      dev_attr);
 373         struct mspro_mbr *x_mbr = x_attr->data;
 374         ssize_t rc = 0;
 375
 376         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "boot partition: %x\n",
 377                         x_mbr->boot_partition);
 378         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start head: %x\n",
 379                         x_mbr->start_head);
 380         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sector: %x\n",
 381                         x_mbr->start_sector);
 382         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start cylinder: %x\n",
 383                         x_mbr->start_cylinder);
 384         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "partition type: %x\n",
 385                         x_mbr->partition_type);
 386         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end head: %x\n",
 387                         x_mbr->end_head);
 388         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end sector: %x\n",
 389                         x_mbr->end_sector);
 390         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end cylinder: %x\n",
 391                         x_mbr->end_cylinder);
 392         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sectors: %x\n",
 393                         x_mbr->start_sectors);
 394         rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
 395                         "sectors per partition: %x\n",
 396                         x_mbr->sectors_per_partition);
 397         return rc;
 398 }
 399
 400 static ssize_t mspro_block_attr_show_devinfo(struct device *dev,
 401                                              struct device_attribute *attr,
 402                                              char *buffer)
 403 {
 404         struct mspro_sys_attr *x_attr = container_of(attr,
 405                                                      struct mspro_sys_attr,
 406                                                      dev_attr);
 407         struct mspro_devinfo *x_devinfo = x_attr->data;
 408         ssize_t rc = 0;
 409
 410         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "cylinders: %x\n",
 411                         be16_to_cpu(x_devinfo->cylinders));
 412         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "heads: %x\n",
 413                         be16_to_cpu(x_devinfo->heads));
 414         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "bytes per track: %x\n",
 415                         be16_to_cpu(x_devinfo->bytes_per_track));
 416         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "bytes per sector: %x\n",
 417                         be16_to_cpu(x_devinfo->bytes_per_sector));
 418         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "sectors per track: %x\n",
 419                         be16_to_cpu(x_devinfo->sectors_per_track));
 420         return rc;
 421 }
 422
 423 static sysfs_show_t mspro_block_attr_show(unsigned char tag)
 424 {
 425         switch (tag) {
 426         case MSPRO_BLOCK_ID_SYSINFO:
 427                 return mspro_block_attr_show_sysinfo;
 428         case MSPRO_BLOCK_ID_MODELNAME:
 429                 return mspro_block_attr_show_modelname;
 430         case MSPRO_BLOCK_ID_MBR:
 431                 return mspro_block_attr_show_mbr;
 432         case MSPRO_BLOCK_ID_DEVINFO:
 433                 return mspro_block_attr_show_devinfo;
 434         default:
 435                 return mspro_block_attr_show_default;
 436         }
 437 }
 438
 439 /*** Protocol handlers ***/
 440
 441 /*
 442  * Functions prefixed with "h_" are protocol callbacks. They can be called from
 443  * interrupt context. Return value of 0 means that request processing is still
 444  * ongoing, while special error value of -EAGAIN means that current request is
 445  * finished (and request processor should come back some time later).
 446  */
 447
 448 static int h_mspro_block_req_init(struct memstick_dev *card,
 449                                   struct memstick_request **mrq)
 450 {
 451         struct mspro_block_data *msb = memstick_get_drvdata(card);
 452
 453         *mrq = &card->current_mrq;
 454         card->next_request = msb->mrq_handler;
 455         return 0;
 456 }
 457
 458 static int h_mspro_block_default(struct memstick_dev *card,
 459                                  struct memstick_request **mrq)
 460 {
 461         complete(&card->mrq_complete);
 462         if (!(*mrq)->error)
 463                 return -EAGAIN;
 464         else
 465                 return (*mrq)->error;
 466 }
 467
 468 static int h_mspro_block_get_ro(struct memstick_dev *card,
 469                                 struct memstick_request **mrq)
 470 {
 471         struct mspro_block_data *msb = memstick_get_drvdata(card);
 472
 473         if ((*mrq)->error) {
 474                 complete(&card->mrq_complete);
 475                 return (*mrq)->error;
 476         }
 477
 478         if ((*mrq)->data[offsetof(struct ms_status_register, status0)]
 479             & MEMSTICK_STATUS0_WP)
 480                 msb->read_only = 1;
 481         else
 482                 msb->read_only = 0;
 483
 484         complete(&card->mrq_complete);
 485         return -EAGAIN;
 486 }
 487
 488 static int h_mspro_block_wait_for_ced(struct memstick_dev *card,
 489                                       struct memstick_request **mrq)
 490 {
 491         if ((*mrq)->error) {
 492                 complete(&card->mrq_complete);
 493                 return (*mrq)->error;
 494         }
 495
 496         dev_dbg(&card->dev, "wait for ced: value %x\n", (*mrq)->data[0]);
 497
 498         if ((*mrq)->data[0] & (MEMSTICK_INT_CMDNAK | MEMSTICK_INT_ERR)) {
 499                 card->current_mrq.error = -EFAULT;
 500                 complete(&card->mrq_complete);
 501                 return card->current_mrq.error;
 502         }
 503
 504         if (!((*mrq)->data[0] & MEMSTICK_INT_CED))
 505                 return 0;
 506         else {
 507                 card->current_mrq.error = 0;
 508                 complete(&card->mrq_complete);
 509                 return -EAGAIN;
 510         }
 511 }
 512
 513 static int h_mspro_block_transfer_data(struct memstick_dev *card,
 514                                        struct memstick_request **mrq)
 515 {
 516         struct memstick_host *host = card->host;
 517         struct mspro_block_data *msb = memstick_get_drvdata(card);
 518         unsigned char t_val = 0;
 519         struct scatterlist t_sg = { 0 };
 520         size_t t_offset;
 521
 522         if ((*mrq)->error) {
 523                 complete(&card->mrq_complete);
 524                 return (*mrq)->error;
 525         }
 526
 527         switch ((*mrq)->tpc) {
 528         case MS_TPC_WRITE_REG:
 529                 memstick_init_req(*mrq, MS_TPC_SET_CMD, &msb->transfer_cmd, 1);
 530                 (*mrq)->get_int_reg = 1;
 531                 return 0;
 532         case MS_TPC_SET_CMD:
 533                 t_val = (*mrq)->int_reg;
 534                 memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
 535                 if (host->caps & MEMSTICK_CAP_AUTO_GET_INT)
 536                         goto has_int_reg;
 537                 return 0;
 538         case MS_TPC_GET_INT:
 539                 t_val = (*mrq)->data[0];
 540 has_int_reg:
 541                 if (t_val & (MEMSTICK_INT_CMDNAK | MEMSTICK_INT_ERR)) {
 542                         t_val = MSPRO_CMD_STOP;
 543                         memstick_init_req(*mrq, MS_TPC_SET_CMD, &t_val, 1);
 544                         card->next_request = h_mspro_block_default;
 545                         return 0;
 546                 }
 547
 548                 if (msb->current_page
 549                     == (msb->req_sg[msb->current_seg].length
 550                         / msb->page_size)) {
 551                         msb->current_page = 0;
 552                         msb->current_seg++;
 553
 554                         if (msb->current_seg == msb->seg_count) {
 555                                 if (t_val & MEMSTICK_INT_CED) {
 556                                         complete(&card->mrq_complete);
 557                                         return -EAGAIN;
 558                                 } else {
 559                                         card->next_request
 560                                                 = h_mspro_block_wait_for_ced;
 561                                         memstick_init_req(*mrq, MS_TPC_GET_INT,
 562                                                           NULL, 1);
 563                                         return 0;
 564                                 }
 565                         }
 566                 }
 567
 568                 if (!(t_val & MEMSTICK_INT_BREQ)) {
 569                         memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
 570                         return 0;
 571                 }
 572
 573                 t_offset = msb->req_sg[msb->current_seg].offset;
 574                 t_offset += msb->current_page * msb->page_size;
 575
 576                 sg_set_page(&t_sg,
 577                             nth_page(sg_page(&(msb->req_sg[msb->current_seg])),
 578                                      t_offset >> PAGE_SHIFT),
 579                             msb->page_size, offset_in_page(t_offset));
 580
 581                 memstick_init_req_sg(*mrq, msb->data_dir == READ
 582                                            ? MS_TPC_READ_LONG_DATA
 583                                            : MS_TPC_WRITE_LONG_DATA,
 584                                      &t_sg);
 585                 (*mrq)->get_int_reg = 1;
 586                 return 0;
 587         case MS_TPC_READ_LONG_DATA:
 588         case MS_TPC_WRITE_LONG_DATA:
 589                 msb->current_page++;
 590                 if (host->caps & MEMSTICK_CAP_AUTO_GET_INT) {
 591                         t_val = (*mrq)->int_reg;
 592                         goto has_int_reg;
 593                 } else {
 594                         memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
 595                         return 0;
 596                 }
 597
 598         default:
 599                 BUG();
 600         }
 601 }
 602
 603 /*** Data transfer ***/
 604
 605 static void mspro_block_process_request(struct memstick_dev *card,
 606                                         struct request *req)
 607 {
 608         struct mspro_block_data *msb = memstick_get_drvdata(card);
 609         struct mspro_param_register param;
 610         int rc, chunk, cnt;
 611         unsigned short page_count;
 612         sector_t t_sec;
 613         unsigned long flags;
 614
 615         do {
 616                 page_count = 0;
 617                 msb->current_seg = 0;
 618                 msb->seg_count = blk_rq_map_sg(req->q, req, msb->req_sg);
 619
 620                 if (msb->seg_count) {
 621                         msb->current_page = 0;
 622                         for (rc = 0; rc < msb->seg_count; rc++)
 623                                 page_count += msb->req_sg[rc].length
 624                                               / msb->page_size;
 625
 626                         t_sec = req->sector;
 627                         sector_div(t_sec, msb->page_size >> 9);
 628                         param.system = msb->system;
 629                         param.data_count = cpu_to_be16(page_count);
 630                         param.data_address = cpu_to_be32((uint32_t)t_sec);
 631                         param.tpc_param = 0;
 632
 633                         msb->data_dir = rq_data_dir(req);
 634                         msb->transfer_cmd = msb->data_dir == READ
 635                                             ? MSPRO_CMD_READ_DATA
 636                                             : MSPRO_CMD_WRITE_DATA;
 637
 638                         dev_dbg(&card->dev, "data transfer: cmd %x, "
 639                                 "lba %x, count %x\n", msb->transfer_cmd,
 640                                 be32_to_cpu(param.data_address),
 641                                 page_count);
 642
 643                         card->next_request = h_mspro_block_req_init;
 644                         msb->mrq_handler = h_mspro_block_transfer_data;
 645                         memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG,
 646                                           &param, sizeof(param));
 647                         memstick_new_req(card->host);
 648                         wait_for_completion(&card->mrq_complete);
 649                         rc = card->current_mrq.error;
 650
 651                         if (rc || (card->current_mrq.tpc == MSPRO_CMD_STOP)) {
 652                                 for (cnt = 0; cnt < msb->current_seg; cnt++)
 653                                         page_count += msb->req_sg[cnt].length
 654                                                       / msb->page_size;
 655
 656                                 if (msb->current_page)
 657                                         page_count += msb->current_page - 1;
 658
 659                                 if (page_count && (msb->data_dir == READ))
 660                                         rc = msb->page_size * page_count;
 661                                 else
 662                                         rc = -EIO;
 663                         } else
 664                                 rc = msb->page_size * page_count;
 665                 } else
 666                         rc = -EFAULT;
 667
 668                 spin_lock_irqsave(&msb->q_lock, flags);
 669                 if (rc >= 0)
 670                         chunk = __blk_end_request(req, 0, rc);
 671                 else
 672                         chunk = __blk_end_request(req, rc, 0);
 673
 674                 dev_dbg(&card->dev, "end chunk %d, %d\n", rc, chunk);
 675                 spin_unlock_irqrestore(&msb->q_lock, flags);
 676         } while (chunk);
 677 }
 678
 679 static int mspro_block_has_request(struct mspro_block_data *msb)
 680 {
 681         int rc = 0;
 682         unsigned long flags;
 683
 684         spin_lock_irqsave(&msb->q_lock, flags);
 685         if (kthread_should_stop() || msb->has_request)
 686                 rc = 1;
 687         spin_unlock_irqrestore(&msb->q_lock, flags);
 688         return rc;
 689 }
 690
 691 static int mspro_block_queue_thread(void *data)
 692 {
 693         struct memstick_dev *card = data;
 694         struct memstick_host *host = card->host;
 695         struct mspro_block_data *msb = memstick_get_drvdata(card);
 696         struct request *req;
 697         unsigned long flags;
 698
 699         while (1) {
 700                 wait_event(msb->q_wait, mspro_block_has_request(msb));
 701                 dev_dbg(&card->dev, "thread iter\n");
 702
 703                 spin_lock_irqsave(&msb->q_lock, flags);
 704                 req = elv_next_request(msb->queue);
 705                 dev_dbg(&card->dev, "next req %p\n", req);
 706                 if (!req) {
 707                         msb->has_request = 0;
 708                         if (kthread_should_stop()) {
 709                                 spin_unlock_irqrestore(&msb->q_lock, flags);
 710                                 break;
 711                         }
 712                 } else
 713                         msb->has_request = 1;
 714                 spin_unlock_irqrestore(&msb->q_lock, flags);
 715
 716                 if (req) {
 717                         mutex_lock(&host->lock);
 718                         mspro_block_process_request(card, req);
 719                         mutex_unlock(&host->lock);
 720                 }
 721         }
 722         dev_dbg(&card->dev, "thread finished\n");
 723         return 0;
 724 }
 725
 726 static void mspro_block_request(struct request_queue *q)
 727 {
 728         struct memstick_dev *card = q->queuedata;
 729         struct mspro_block_data *msb = memstick_get_drvdata(card);
 730         struct request *req = NULL;
 731
 732         if (msb->q_thread) {
 733                 msb->has_request = 1;
 734                 wake_up_all(&msb->q_wait);
 735         } else {
 736                 while ((req = elv_next_request(q)) != NULL)
 737                         end_queued_request(req, -ENODEV);
 738         }
 739 }
 740
 741 /*** Initialization ***/
 742
 743 static int mspro_block_wait_for_ced(struct memstick_dev *card)
 744 {
 745         struct mspro_block_data *msb = memstick_get_drvdata(card);
 746
 747         card->next_request = h_mspro_block_req_init;
 748         msb->mrq_handler = h_mspro_block_wait_for_ced;
 749         memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1);
 750         memstick_new_req(card->host);
 751         wait_for_completion(&card->mrq_complete);
 752         return card->current_mrq.error;
 753 }
 754
 755 static int mspro_block_switch_to_parallel(struct memstick_dev *card)
 756 {
 757         struct memstick_host *host = card->host;
 758         struct mspro_block_data *msb = memstick_get_drvdata(card);
 759         struct mspro_param_register param = {
 760                 .system = 0,
 761                 .data_count = 0,
 762                 .data_address = 0,
 763                 .tpc_param = 0
 764         };
 765
 766         card->next_request = h_mspro_block_req_init;
 767         msb->mrq_handler = h_mspro_block_default;
 768         memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, &param,
 769                           sizeof(param));
 770         memstick_new_req(host);
 771         wait_for_completion(&card->mrq_complete);
 772         if (card->current_mrq.error)
 773                 return card->current_mrq.error;
 774
 775         msb->system = MEMSTICK_SYS_PAR4;
 776         host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_PAR4);
 777
 778         card->next_request = h_mspro_block_req_init;
 779         msb->mrq_handler = h_mspro_block_default;
 780         memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1);
 781         memstick_new_req(card->host);
 782         wait_for_completion(&card->mrq_complete);
 783
 784         if (card->current_mrq.error) {
 785                 msb->system = 0x80;
 786                 host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_SERIAL);
 787                 return -EFAULT;
 788         }
 789
 790         return 0;
 791 }
 792
 793 /* Memory allocated for attributes by this function should be freed by
 794  * mspro_block_data_clear, no matter if the initialization process succeded
 795  * or failed.
 796  */
 797 static int mspro_block_read_attributes(struct memstick_dev *card)
 798 {
 799         struct mspro_block_data *msb = memstick_get_drvdata(card);
 800         struct mspro_param_register param = {
 801                 .system = msb->system,
 802                 .data_count = cpu_to_be16(1),
 803                 .data_address = 0,
 804                 .tpc_param = 0
 805         };
 806         struct mspro_attribute *attr = NULL;
 807         struct mspro_sys_attr *s_attr = NULL;
 808         unsigned char *buffer = NULL;
 809         int cnt, rc, attr_count;
 810         unsigned int addr;
 811         unsigned short page_count;
 812
 813         attr = kmalloc(msb->page_size, GFP_KERNEL);
 814         if (!attr)
 815                 return -ENOMEM;
 816
 817         sg_init_one(&msb->req_sg[0], attr, msb->page_size);
 818         msb->seg_count = 1;
 819         msb->current_seg = 0;
 820         msb->current_page = 0;
 821         msb->data_dir = READ;
 822         msb->transfer_cmd = MSPRO_CMD_READ_ATRB;
 823
 824         card->next_request = h_mspro_block_req_init;
 825         msb->mrq_handler = h_mspro_block_transfer_data;
 826         memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, &param,
 827                           sizeof(param));
 828         memstick_new_req(card->host);
 829         wait_for_completion(&card->mrq_complete);
 830         if (card->current_mrq.error) {
 831                 rc = card->current_mrq.error;
 832                 goto out_free_attr;
 833         }
 834
 835         if (be16_to_cpu(attr->signature) != MSPRO_BLOCK_SIGNATURE) {
 836                 printk(KERN_ERR "%s: unrecognized device signature %x\n",
 837                        card->dev.bus_id, be16_to_cpu(attr->signature));
 838                 rc = -ENODEV;
 839                 goto out_free_attr;
 840         }
 841
 842         if (attr->count > MSPRO_BLOCK_MAX_ATTRIBUTES) {
 843                 printk(KERN_WARNING "%s: way too many attribute entries\n",
 844                        card->dev.bus_id);
 845                 attr_count = MSPRO_BLOCK_MAX_ATTRIBUTES;
 846         } else
 847                 attr_count = attr->count;
 848
 849         msb->attr_group.attrs = kzalloc((attr_count + 1)
 850                                         * sizeof(struct attribute),
 851                                         GFP_KERNEL);
 852         if (!msb->attr_group.attrs) {
 853                 rc = -ENOMEM;
 854                 goto out_free_attr;
 855         }
 856         msb->attr_group.name = "media_attributes";
 857
 858         buffer = kmalloc(msb->page_size, GFP_KERNEL);
 859         if (!buffer) {
 860                 rc = -ENOMEM;
 861                 goto out_free_attr;
 862         }
 863         memcpy(buffer, (char *)attr, msb->page_size);
 864         page_count = 1;
 865
 866         for (cnt = 0; cnt < attr_count; ++cnt) {
 867                 s_attr = kzalloc(sizeof(struct mspro_sys_attr), GFP_KERNEL);
 868                 if (!s_attr) {
 869                         rc = -ENOMEM;
 870                         goto out_free_buffer;
 871                 }
 872
 873                 msb->attr_group.attrs[cnt] = &s_attr->dev_attr.attr;
 874                 addr = be32_to_cpu(attr->entries[cnt].address);
 875                 rc = be32_to_cpu(attr->entries[cnt].size);
 876                 dev_dbg(&card->dev, "adding attribute %d: id %x, address %x, "
 877                         "size %x\n", cnt, attr->entries[cnt].id, addr, rc);
 878                 s_attr->id = attr->entries[cnt].id;
 879                 if (mspro_block_attr_name(s_attr->id))
 880                         snprintf(s_attr->name, sizeof(s_attr->name), "%s",
 881                                  mspro_block_attr_name(attr->entries[cnt].id));
 882                 else
 883                         snprintf(s_attr->name, sizeof(s_attr->name),
 884                                  "attr_x%02x", attr->entries[cnt].id);
 885
 886                 s_attr->dev_attr.attr.name = s_attr->name;
 887                 s_attr->dev_attr.attr.mode = S_IRUGO;
 888                 s_attr->dev_attr.attr.owner = THIS_MODULE;
 889                 s_attr->dev_attr.show = mspro_block_attr_show(s_attr->id);
 890
 891                 if (!rc)
 892                         continue;
 893
 894                 s_attr->size = rc;
 895                 s_attr->data = kmalloc(rc, GFP_KERNEL);
 896                 if (!s_attr->data) {
 897                         rc = -ENOMEM;
 898                         goto out_free_buffer;
 899                 }
 900
 901                 if (((addr / msb->page_size)
 902                      == be32_to_cpu(param.data_address))
 903                     && (((addr + rc - 1) / msb->page_size)
 904                         == be32_to_cpu(param.data_address))) {
 905                         memcpy(s_attr->data, buffer + addr % msb->page_size,
 906                                rc);
 907                         continue;
 908                 }
 909
 910                 if (page_count <= (rc / msb->page_size)) {
 911                         kfree(buffer);
 912                         page_count = (rc / msb->page_size) + 1;
 913                         buffer = kmalloc(page_count * msb->page_size,
 914                                          GFP_KERNEL);
 915                         if (!buffer) {
 916                                 rc = -ENOMEM;
 917                                 goto out_free_attr;
 918                         }
 919                 }
 920
 921                 param.system = msb->system;
 922                 param.data_count = cpu_to_be16((rc / msb->page_size) + 1);
 923                 param.data_address = cpu_to_be32(addr / msb->page_size);
 924                 param.tpc_param = 0;
 925
 926                 sg_init_one(&msb->req_sg[0], buffer,
 927                             be16_to_cpu(param.data_count) * msb->page_size);
 928                 msb->seg_count = 1;
 929                 msb->current_seg = 0;
 930                 msb->current_page = 0;
 931                 msb->data_dir = READ;
 932                 msb->transfer_cmd = MSPRO_CMD_READ_ATRB;
 933
 934                 dev_dbg(&card->dev, "reading attribute pages %x, %x\n",
 935                         be32_to_cpu(param.data_address),
 936                         be16_to_cpu(param.data_count));
 937
 938                 card->next_request = h_mspro_block_req_init;
 939                 msb->mrq_handler = h_mspro_block_transfer_data;
 940                 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG,
 941                                   (char *)&param, sizeof(param));
 942                 memstick_new_req(card->host);
 943                 wait_for_completion(&card->mrq_complete);
 944                 if (card->current_mrq.error) {
 945                         rc = card->current_mrq.error;
 946                         goto out_free_buffer;
 947                 }
 948
 949                 memcpy(s_attr->data, buffer + addr % msb->page_size, rc);
 950         }
 951
 952         rc = 0;
 953 out_free_buffer:
 954         kfree(buffer);
 955 out_free_attr:
 956         kfree(attr);
 957         return rc;
 958 }
 959
 960 static int mspro_block_init_card(struct memstick_dev *card)
 961 {
 962         struct mspro_block_data *msb = memstick_get_drvdata(card);
 963         struct memstick_host *host = card->host;
 964         int rc = 0;
 965
 966         msb->system = MEMSTICK_SYS_SERIAL;
 967         card->reg_addr.r_offset = offsetof(struct mspro_register, status);
 968         card->reg_addr.r_length = sizeof(struct ms_status_register);
 969         card->reg_addr.w_offset = offsetof(struct mspro_register, param);
 970         card->reg_addr.w_length = sizeof(struct mspro_param_register);
 971
 972         if (memstick_set_rw_addr(card))
 973                 return -EIO;
 974
 975         if (host->caps & MEMSTICK_CAP_PAR4) {
 976                 if (mspro_block_switch_to_parallel(card))
 977                         printk(KERN_WARNING "%s: could not switch to "
 978                                "parallel interface\n", card->dev.bus_id);
 979         }
 980
 981         rc = mspro_block_wait_for_ced(card);
 982         if (rc)
 983                 return rc;
 984         dev_dbg(&card->dev, "card activated\n");
 985
 986         card->next_request = h_mspro_block_req_init;
 987         msb->mrq_handler = h_mspro_block_get_ro;
 988         memstick_init_req(&card->current_mrq, MS_TPC_READ_REG, NULL,
 989                           sizeof(struct ms_status_register));
 990         memstick_new_req(card->host);
 991         wait_for_completion(&card->mrq_complete);
 992         if (card->current_mrq.error)
 993                 return card->current_mrq.error;
 994
 995         dev_dbg(&card->dev, "card r/w status %d\n", msb->read_only ? 0 : 1);
 996
 997         msb->page_size = 512;
 998         rc = mspro_block_read_attributes(card);
 999         if (rc)
1000                 return rc;
1001
1002         dev_dbg(&card->dev, "attributes loaded\n");
1003         return 0;
1004
1005 }
1006
1007 static int mspro_block_init_disk(struct memstick_dev *card)
1008 {
1009         struct mspro_block_data *msb = memstick_get_drvdata(card);
1010         struct memstick_host *host = card->host;
1011         struct mspro_devinfo *dev_info = NULL;
1012         struct mspro_sys_info *sys_info = NULL;
1013         struct mspro_sys_attr *s_attr = NULL;
1014         int rc, disk_id;
1015         u64 limit = BLK_BOUNCE_HIGH;
1016         unsigned long capacity;
1017
1018         if (host->cdev.dev->dma_mask && *(host->cdev.dev->dma_mask))
1019                 limit = *(host->cdev.dev->dma_mask);
1020
1021         for (rc = 0; msb->attr_group.attrs[rc]; ++rc) {
1022                 s_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[rc]);
1023
1024                 if (s_attr->id == MSPRO_BLOCK_ID_DEVINFO)
1025                         dev_info = s_attr->data;
1026                 else if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO)
1027                         sys_info = s_attr->data;
1028         }
1029
1030         if (!dev_info || !sys_info)
1031                 return -ENODEV;
1032
1033         msb->cylinders = be16_to_cpu(dev_info->cylinders);
1034         msb->heads = be16_to_cpu(dev_info->heads);
1035         msb->sectors_per_track = be16_to_cpu(dev_info->sectors_per_track);
1036
1037         msb->page_size = be16_to_cpu(sys_info->unit_size);
1038
1039         if (!idr_pre_get(&mspro_block_disk_idr, GFP_KERNEL))
1040                 return -ENOMEM;
1041
1042         mutex_lock(&mspro_block_disk_lock);
1043         rc = idr_get_new(&mspro_block_disk_idr, card, &disk_id);
1044         mutex_unlock(&mspro_block_disk_lock);
1045
1046         if (rc)
1047                 return rc;
1048
1049         if ((disk_id << MEMSTICK_PART_SHIFT) > 255) {
1050                 rc = -ENOSPC;
1051                 goto out_release_id;
1052         }
1053
1054         msb->disk = alloc_disk(1 << MEMSTICK_PART_SHIFT);
1055         if (!msb->disk) {
1056                 rc = -ENOMEM;
1057                 goto out_release_id;
1058         }
1059
1060         spin_lock_init(&msb->q_lock);
1061         init_waitqueue_head(&msb->q_wait);
1062
1063         msb->queue = blk_init_queue(mspro_block_request, &msb->q_lock);
1064         if (!msb->queue) {
1065                 rc = -ENOMEM;
1066                 goto out_put_disk;
1067         }
1068
1069         msb->queue->queuedata = card;
1070
1071         blk_queue_bounce_limit(msb->queue, limit);
1072         blk_queue_max_sectors(msb->queue, MSPRO_BLOCK_MAX_PAGES);
1073         blk_queue_max_phys_segments(msb->queue, MSPRO_BLOCK_MAX_SEGS);
1074         blk_queue_max_hw_segments(msb->queue, MSPRO_BLOCK_MAX_SEGS);
1075         blk_queue_max_segment_size(msb->queue,
1076                                    MSPRO_BLOCK_MAX_PAGES * msb->page_size);
1077
1078         msb->disk->major = major;
1079         msb->disk->first_minor = disk_id << MEMSTICK_PART_SHIFT;
1080         msb->disk->fops = &ms_block_bdops;
1081         msb->usage_count = 1;
1082         msb->disk->private_data = msb;
1083         msb->disk->queue = msb->queue;
1084         msb->disk->driverfs_dev = &card->dev;
1085
1086         sprintf(msb->disk->disk_name, "mspblk%d", disk_id);
1087
1088         blk_queue_hardsect_size(msb->queue, msb->page_size);
1089
1090         capacity = be16_to_cpu(sys_info->user_block_count);
1091         capacity *= be16_to_cpu(sys_info->block_size);
1092         capacity *= msb->page_size >> 9;
1093         set_capacity(msb->disk, capacity);
1094         dev_dbg(&card->dev, "capacity set %ld\n", capacity);
1095         msb->q_thread = kthread_run(mspro_block_queue_thread, card,
1096                                     DRIVER_NAME"d");
1097         if (IS_ERR(msb->q_thread))
1098                 goto out_put_disk;
1099
1100         mutex_unlock(&host->lock);
1101         add_disk(msb->disk);
1102         mutex_lock(&host->lock);
1103         msb->active = 1;
1104         return 0;
1105
1106 out_put_disk:
1107         put_disk(msb->disk);
1108 out_release_id:
1109         mutex_lock(&mspro_block_disk_lock);
1110         idr_remove(&mspro_block_disk_idr, disk_id);
1111         mutex_unlock(&mspro_block_disk_lock);
1112         return rc;
1113 }
1114
1115 static void mspro_block_data_clear(struct mspro_block_data *msb)
1116 {
1117         int cnt;
1118         struct mspro_sys_attr *s_attr;
1119
1120         if (msb->attr_group.attrs) {
1121                 for (cnt = 0; msb->attr_group.attrs[cnt]; ++cnt) {
1122                         s_attr = mspro_from_sysfs_attr(msb->attr_group
1123                                                            .attrs[cnt]);
1124                         kfree(s_attr->data);
1125                         kfree(s_attr);
1126                 }
1127                 kfree(msb->attr_group.attrs);
1128         }
1129
1130         msb->card = NULL;
1131 }
1132
1133 static int mspro_block_check_card(struct memstick_dev *card)
1134 {
1135         struct mspro_block_data *msb = memstick_get_drvdata(card);
1136
1137         return (msb->active == 1);
1138 }
1139
1140 static int mspro_block_probe(struct memstick_dev *card)
1141 {
1142         struct mspro_block_data *msb;
1143         int rc = 0;
1144
1145         msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL);
1146         if (!msb)
1147                 return -ENOMEM;
1148         memstick_set_drvdata(card, msb);
1149         msb->card = card;
1150
1151         rc = mspro_block_init_card(card);
1152
1153         if (rc)
1154                 goto out_free;
1155
1156         rc = sysfs_create_group(&card->dev.kobj, &msb->attr_group);
1157         if (rc)
1158                 goto out_free;
1159
1160         rc = mspro_block_init_disk(card);
1161         if (!rc) {
1162                 card->check = mspro_block_check_card;
1163                 return 0;
1164         }
1165
1166         sysfs_remove_group(&card->dev.kobj, &msb->attr_group);
1167 out_free:
1168         memstick_set_drvdata(card, NULL);
1169         mspro_block_data_clear(msb);
1170         kfree(msb);
1171         return rc;
1172 }
1173
1174 static void mspro_block_remove(struct memstick_dev *card)
1175 {
1176         struct mspro_block_data *msb = memstick_get_drvdata(card);
1177         struct task_struct *q_thread = NULL;
1178         unsigned long flags;
1179
1180         del_gendisk(msb->disk);
1181         dev_dbg(&card->dev, "mspro block remove\n");
1182         spin_lock_irqsave(&msb->q_lock, flags);
1183         q_thread = msb->q_thread;
1184         msb->q_thread = NULL;
1185         msb->active = 0;
1186         spin_unlock_irqrestore(&msb->q_lock, flags);
1187
1188         if (q_thread) {
1189                 mutex_unlock(&card->host->lock);
1190                 kthread_stop(q_thread);
1191                 mutex_lock(&card->host->lock);
1192         }
1193
1194         dev_dbg(&card->dev, "queue thread stopped\n");
1195
1196         blk_cleanup_queue(msb->queue);
1197
1198         sysfs_remove_group(&card->dev.kobj, &msb->attr_group);
1199
1200         mutex_lock(&mspro_block_disk_lock);
1201         mspro_block_data_clear(msb);
1202         mutex_unlock(&mspro_block_disk_lock);
1203
1204         mspro_block_disk_release(msb->disk);
1205         memstick_set_drvdata(card, NULL);
1206 }
1207
1208 #ifdef CONFIG_PM
1209
1210 static int mspro_block_suspend(struct memstick_dev *card, pm_message_t state)
1211 {
1212         struct mspro_block_data *msb = memstick_get_drvdata(card);
1213         struct task_struct *q_thread = NULL;
1214         unsigned long flags;
1215
1216         spin_lock_irqsave(&msb->q_lock, flags);
1217         q_thread = msb->q_thread;
1218         msb->q_thread = NULL;
1219         msb->active = 0;
1220         blk_stop_queue(msb->queue);
1221         spin_unlock_irqrestore(&msb->q_lock, flags);
1222
1223         if (q_thread)
1224                 kthread_stop(q_thread);
1225
1226         return 0;
1227 }
1228
1229 static int mspro_block_resume(struct memstick_dev *card)
1230 {
1231         struct mspro_block_data *msb = memstick_get_drvdata(card);
1232         unsigned long flags;
1233         int rc = 0;
1234
1235 #ifdef CONFIG_MEMSTICK_UNSAFE_RESUME
1236
1237         struct mspro_block_data *new_msb;
1238         struct memstick_host *host = card->host;
1239         struct mspro_sys_attr *s_attr, *r_attr;
1240         unsigned char cnt;
1241
1242         mutex_lock(&host->lock);
1243         new_msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL);
1244         if (!new_msb) {
1245                 rc = -ENOMEM;
1246                 goto out_unlock;
1247         }
1248
1249         new_msb->card = card;
1250         memstick_set_drvdata(card, new_msb);
1251         if (mspro_block_init_card(card))
1252                 goto out_free;
1253
1254         for (cnt = 0; new_msb->attr_group.attrs[cnt]
1255                       && msb->attr_group.attrs[cnt]; ++cnt) {
1256                 s_attr = mspro_from_sysfs_attr(new_msb->attr_group.attrs[cnt]);
1257                 r_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[cnt]);
1258
1259                 if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO
1260                     && r_attr->id == s_attr->id) {
1261                         if (memcmp(s_attr->data, r_attr->data, s_attr->size))
1262                                 break;
1263
1264                         memstick_set_drvdata(card, msb);
1265                         msb->q_thread = kthread_run(mspro_block_queue_thread,
1266                                                     card, DRIVER_NAME"d");
1267                         if (IS_ERR(msb->q_thread))
1268                                 msb->q_thread = NULL;
1269                         else
1270                                 msb->active = 1;
1271
1272                         break;
1273                 }
1274         }
1275
1276 out_free:
1277         memstick_set_drvdata(card, msb);
1278         mspro_block_data_clear(new_msb);
1279         kfree(new_msb);
1280 out_unlock:
1281         mutex_unlock(&host->lock);
1282
1283 #endif /* CONFIG_MEMSTICK_UNSAFE_RESUME */
1284
1285         spin_lock_irqsave(&msb->q_lock, flags);
1286         blk_start_queue(msb->queue);
1287         spin_unlock_irqrestore(&msb->q_lock, flags);
1288         return rc;
1289 }
1290
1291 #else
1292
1293 #define mspro_block_suspend NULL
1294 #define mspro_block_resume NULL
1295
1296 #endif /* CONFIG_PM */
1297
1298 static struct memstick_device_id mspro_block_id_tbl[] = {
1299         {MEMSTICK_MATCH_ALL, MEMSTICK_TYPE_PRO, MEMSTICK_CATEGORY_STORAGE_DUO,
1300          MEMSTICK_CLASS_GENERIC_DUO},
1301         {}
1302 };
1303
1304
1305 static struct memstick_driver mspro_block_driver = {
1306         .driver = {
1307                 .name  = DRIVER_NAME,
1308                 .owner = THIS_MODULE
1309         },
1310         .id_table = mspro_block_id_tbl,
1311         .probe    = mspro_block_probe,
1312         .remove   = mspro_block_remove,
1313         .suspend  = mspro_block_suspend,
1314         .resume   = mspro_block_resume
1315 };
1316
1317 static int __init mspro_block_init(void)
1318 {
1319         int rc = -ENOMEM;
1320
1321         rc = register_blkdev(major, DRIVER_NAME);
1322         if (rc < 0) {
1323                 printk(KERN_ERR DRIVER_NAME ": failed to register "
1324                        "major %d, error %d\n", major, rc);
1325                 return rc;
1326         }
1327         if (!major)
1328                 major = rc;
1329
1330         rc = memstick_register_driver(&mspro_block_driver);
1331         if (rc)
1332                 unregister_blkdev(major, DRIVER_NAME);
1333         return rc;
1334 }
1335
1336 static void __exit mspro_block_exit(void)
1337 {
1338         memstick_unregister_driver(&mspro_block_driver);
1339         unregister_blkdev(major, DRIVER_NAME);
1340         idr_destroy(&mspro_block_disk_idr);
1341 }
1342
1343 module_init(mspro_block_init);
1344 module_exit(mspro_block_exit);
1345
1346 MODULE_LICENSE("GPL");
1347 MODULE_AUTHOR("Alex Dubov");
1348 MODULE_DESCRIPTION("Sony MemoryStickPro block device driver");
1349 MODULE_DEVICE_TABLE(memstick, mspro_block_id_tbl);