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 #define DRIVER_VERSION "0.2"
  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_devinfo {
 114         unsigned short cylinders;
 115         unsigned short heads;
 116         unsigned short bytes_per_track;
 117         unsigned short bytes_per_sector;
 118         unsigned short sectors_per_track;
 119         unsigned char  reserved[6];
 120 } __attribute__((packed));
 121
 122 struct mspro_block_data {
 123         struct memstick_dev   *card;
 124         unsigned int          usage_count;
 125         struct gendisk        *disk;
 126         struct request_queue  *queue;
 127         spinlock_t            q_lock;
 128         wait_queue_head_t     q_wait;
 129         struct task_struct    *q_thread;
 130
 131         unsigned short        page_size;
 132         unsigned short        cylinders;
 133         unsigned short        heads;
 134         unsigned short        sectors_per_track;
 135
 136         unsigned char         system;
 137         unsigned char         read_only:1,
 138                               active:1,
 139                               has_request:1,
 140                               data_dir:1;
 141         unsigned char         transfer_cmd;
 142
 143         int                   (*mrq_handler)(struct memstick_dev *card,
 144                                              struct memstick_request **mrq);
 145
 146         struct attribute_group attr_group;
 147
 148         struct scatterlist    req_sg[MSPRO_BLOCK_MAX_SEGS];
 149         unsigned int          seg_count;
 150         unsigned int          current_seg;
 151         unsigned short        current_page;
 152 };
 153
 154 static DEFINE_IDR(mspro_block_disk_idr);
 155 static DEFINE_MUTEX(mspro_block_disk_lock);
 156
 157 /*** Block device ***/
 158
 159 static int mspro_block_bd_open(struct inode *inode, struct file *filp)
 160 {
 161         struct gendisk *disk = inode->i_bdev->bd_disk;
 162         struct mspro_block_data *msb = disk->private_data;
 163         int rc = -ENXIO;
 164
 165         mutex_lock(&mspro_block_disk_lock);
 166
 167         if (msb && msb->card) {
 168                 msb->usage_count++;
 169                 if ((filp->f_mode & FMODE_WRITE) && msb->read_only)
 170                         rc = -EROFS;
 171                 else
 172                         rc = 0;
 173         }
 174
 175         mutex_unlock(&mspro_block_disk_lock);
 176
 177         return rc;
 178 }
 179
 180
 181 static int mspro_block_disk_release(struct gendisk *disk)
 182 {
 183         struct mspro_block_data *msb = disk->private_data;
 184         int disk_id = disk->first_minor >> MEMSTICK_PART_SHIFT;
 185
 186         mutex_lock(&mspro_block_disk_lock);
 187
 188         if (msb->usage_count) {
 189                 msb->usage_count--;
 190                 if (!msb->usage_count) {
 191                         kfree(msb);
 192                         disk->private_data = NULL;
 193                         idr_remove(&mspro_block_disk_idr, disk_id);
 194                         put_disk(disk);
 195                 }
 196         }
 197
 198         mutex_unlock(&mspro_block_disk_lock);
 199
 200         return 0;
 201 }
 202
 203 static int mspro_block_bd_release(struct inode *inode, struct file *filp)
 204 {
 205         struct gendisk *disk = inode->i_bdev->bd_disk;
 206         return mspro_block_disk_release(disk);
 207 }
 208
 209 static int mspro_block_bd_getgeo(struct block_device *bdev,
 210                                  struct hd_geometry *geo)
 211 {
 212         struct mspro_block_data *msb = bdev->bd_disk->private_data;
 213
 214         geo->heads = msb->heads;
 215         geo->sectors = msb->sectors_per_track;
 216         geo->cylinders = msb->cylinders;
 217
 218         return 0;
 219 }
 220
 221 static struct block_device_operations ms_block_bdops = {
 222         .open    = mspro_block_bd_open,
 223         .release = mspro_block_bd_release,
 224         .getgeo  = mspro_block_bd_getgeo,
 225         .owner   = THIS_MODULE
 226 };
 227
 228 /*** Information ***/
 229
 230 static struct mspro_sys_attr *mspro_from_sysfs_attr(struct attribute *attr)
 231 {
 232         struct device_attribute *dev_attr
 233                 = container_of(attr, struct device_attribute, attr);
 234         return container_of(dev_attr, struct mspro_sys_attr, dev_attr);
 235 }
 236
 237 static const char *mspro_block_attr_name(unsigned char tag)
 238 {
 239         switch (tag) {
 240         case MSPRO_BLOCK_ID_SYSINFO:
 241                 return "attr_sysinfo";
 242         case MSPRO_BLOCK_ID_MODELNAME:
 243                 return "attr_modelname";
 244         case MSPRO_BLOCK_ID_MBR:
 245                 return "attr_mbr";
 246         case MSPRO_BLOCK_ID_PBR16:
 247                 return "attr_pbr16";
 248         case MSPRO_BLOCK_ID_PBR32:
 249                 return "attr_pbr32";
 250         case MSPRO_BLOCK_ID_SPECFILEVALUES1:
 251                 return "attr_specfilevalues1";
 252         case MSPRO_BLOCK_ID_SPECFILEVALUES2:
 253                 return "attr_specfilevalues2";
 254         case MSPRO_BLOCK_ID_DEVINFO:
 255                 return "attr_devinfo";
 256         default:
 257                 return NULL;
 258         };
 259 }
 260
 261 typedef ssize_t (*sysfs_show_t)(struct device *dev,
 262                                 struct device_attribute *attr,
 263                                 char *buffer);
 264
 265 static ssize_t mspro_block_attr_show_default(struct device *dev,
 266                                              struct device_attribute *attr,
 267                                              char *buffer)
 268 {
 269         struct mspro_sys_attr *s_attr = container_of(attr,
 270                                                      struct mspro_sys_attr,
 271                                                      dev_attr);
 272
 273         ssize_t cnt, rc = 0;
 274
 275         for (cnt = 0; cnt < s_attr->size; cnt++) {
 276                 if (cnt && !(cnt % 16)) {
 277                         if (PAGE_SIZE - rc)
 278                                 buffer[rc++] = '\n';
 279                 }
 280
 281                 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "%02x ",
 282                                 ((unsigned char *)s_attr->data)[cnt]);
 283         }
 284         return rc;
 285 }
 286
 287 static ssize_t mspro_block_attr_show_sysinfo(struct device *dev,
 288                                              struct device_attribute *attr,
 289                                              char *buffer)
 290 {
 291         struct mspro_sys_attr *x_attr = container_of(attr,
 292                                                      struct mspro_sys_attr,
 293                                                      dev_attr);
 294         struct mspro_sys_info *x_sys = x_attr->data;
 295         ssize_t rc = 0;
 296
 297         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "class: %x\n",
 298                         x_sys->class);
 299         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "block size: %x\n",
 300                         be16_to_cpu(x_sys->block_size));
 301         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "block count: %x\n",
 302                         be16_to_cpu(x_sys->block_count));
 303         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "user block count: %x\n",
 304                         be16_to_cpu(x_sys->user_block_count));
 305         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "page size: %x\n",
 306                         be16_to_cpu(x_sys->page_size));
 307         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "assembly date: "
 308                         "%d %04u-%02u-%02u %02u:%02u:%02u\n",
 309                         x_sys->assembly_date[0],
 310                         be16_to_cpu(*(unsigned short *)
 311                                     &x_sys->assembly_date[1]),
 312                         x_sys->assembly_date[3], x_sys->assembly_date[4],
 313                         x_sys->assembly_date[5], x_sys->assembly_date[6],
 314                         x_sys->assembly_date[7]);
 315         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "serial number: %x\n",
 316                         be32_to_cpu(x_sys->serial_number));
 317         rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
 318                         "assembly maker code: %x\n",
 319                         x_sys->assembly_maker_code);
 320         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "assembly model code: "
 321                         "%02x%02x%02x\n", x_sys->assembly_model_code[0],
 322                         x_sys->assembly_model_code[1],
 323                         x_sys->assembly_model_code[2]);
 324         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "memory maker code: %x\n",
 325                         be16_to_cpu(x_sys->memory_maker_code));
 326         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "memory model code: %x\n",
 327                         be16_to_cpu(x_sys->memory_model_code));
 328         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "vcc: %x\n",
 329                         x_sys->vcc);
 330         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "vpp: %x\n",
 331                         x_sys->vpp);
 332         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "controller number: %x\n",
 333                         be16_to_cpu(x_sys->controller_number));
 334         rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
 335                         "controller function: %x\n",
 336                         be16_to_cpu(x_sys->controller_function));
 337         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sector: %x\n",
 338                         be16_to_cpu(x_sys->start_sector));
 339         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "unit size: %x\n",
 340                         be16_to_cpu(x_sys->unit_size));
 341         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "sub class: %x\n",
 342                         x_sys->ms_sub_class);
 343         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "interface type: %x\n",
 344                         x_sys->interface_type);
 345         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "controller code: %x\n",
 346                         be16_to_cpu(x_sys->controller_code));
 347         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "format type: %x\n",
 348                         x_sys->format_type);
 349         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "device type: %x\n",
 350                         x_sys->device_type);
 351         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "mspro id: %s\n",
 352                         x_sys->mspro_id);
 353         return rc;
 354 }
 355
 356 static ssize_t mspro_block_attr_show_modelname(struct device *dev,
 357                                                struct device_attribute *attr,
 358                                                char *buffer)
 359 {
 360         struct mspro_sys_attr *s_attr = container_of(attr,
 361                                                      struct mspro_sys_attr,
 362                                                      dev_attr);
 363
 364         return scnprintf(buffer, PAGE_SIZE, "%s", (char *)s_attr->data);
 365 }
 366
 367 static ssize_t mspro_block_attr_show_mbr(struct device *dev,
 368                                          struct device_attribute *attr,
 369                                          char *buffer)
 370 {
 371         struct mspro_sys_attr *x_attr = container_of(attr,
 372                                                      struct mspro_sys_attr,
 373                                                      dev_attr);
 374         struct mspro_mbr *x_mbr = x_attr->data;
 375         ssize_t rc = 0;
 376
 377         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "boot partition: %x\n",
 378                         x_mbr->boot_partition);
 379         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start head: %x\n",
 380                         x_mbr->start_head);
 381         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sector: %x\n",
 382                         x_mbr->start_sector);
 383         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start cylinder: %x\n",
 384                         x_mbr->start_cylinder);
 385         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "partition type: %x\n",
 386                         x_mbr->partition_type);
 387         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end head: %x\n",
 388                         x_mbr->end_head);
 389         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end sector: %x\n",
 390                         x_mbr->end_sector);
 391         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end cylinder: %x\n",
 392                         x_mbr->end_cylinder);
 393         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sectors: %x\n",
 394                         x_mbr->start_sectors);
 395         rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
 396                         "sectors per partition: %x\n",
 397                         x_mbr->sectors_per_partition);
 398         return rc;
 399 }
 400
 401 static ssize_t mspro_block_attr_show_devinfo(struct device *dev,
 402                                              struct device_attribute *attr,
 403                                              char *buffer)
 404 {
 405         struct mspro_sys_attr *x_attr = container_of(attr,
 406                                                      struct mspro_sys_attr,
 407                                                      dev_attr);
 408         struct mspro_devinfo *x_devinfo = x_attr->data;
 409         ssize_t rc = 0;
 410
 411         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "cylinders: %x\n",
 412                         be16_to_cpu(x_devinfo->cylinders));
 413         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "heads: %x\n",
 414                         be16_to_cpu(x_devinfo->heads));
 415         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "bytes per track: %x\n",
 416                         be16_to_cpu(x_devinfo->bytes_per_track));
 417         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "bytes per sector: %x\n",
 418                         be16_to_cpu(x_devinfo->bytes_per_sector));
 419         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "sectors per track: %x\n",
 420                         be16_to_cpu(x_devinfo->sectors_per_track));
 421         return rc;
 422 }
 423
 424 static sysfs_show_t mspro_block_attr_show(unsigned char tag)
 425 {
 426         switch (tag) {
 427         case MSPRO_BLOCK_ID_SYSINFO:
 428                 return mspro_block_attr_show_sysinfo;
 429         case MSPRO_BLOCK_ID_MODELNAME:
 430                 return mspro_block_attr_show_modelname;
 431         case MSPRO_BLOCK_ID_MBR:
 432                 return mspro_block_attr_show_mbr;
 433         case MSPRO_BLOCK_ID_DEVINFO:
 434                 return mspro_block_attr_show_devinfo;
 435         default:
 436                 return mspro_block_attr_show_default;
 437         }
 438 }
 439
 440 /*** Protocol handlers ***/
 441
 442 /*
 443  * Functions prefixed with "h_" are protocol callbacks. They can be called from
 444  * interrupt context. Return value of 0 means that request processing is still
 445  * ongoing, while special error value of -EAGAIN means that current request is
 446  * finished (and request processor should come back some time later).
 447  */
 448
 449 static int h_mspro_block_req_init(struct memstick_dev *card,
 450                                   struct memstick_request **mrq)
 451 {
 452         struct mspro_block_data *msb = memstick_get_drvdata(card);
 453
 454         *mrq = &card->current_mrq;
 455         card->next_request = msb->mrq_handler;
 456         return 0;
 457 }
 458
 459 static int h_mspro_block_default(struct memstick_dev *card,
 460                                  struct memstick_request **mrq)
 461 {
 462         complete(&card->mrq_complete);
 463         if (!(*mrq)->error)
 464                 return -EAGAIN;
 465         else
 466                 return (*mrq)->error;
 467 }
 468
 469 static int h_mspro_block_get_ro(struct memstick_dev *card,
 470                                 struct memstick_request **mrq)
 471 {
 472         struct mspro_block_data *msb = memstick_get_drvdata(card);
 473
 474         if ((*mrq)->error) {
 475                 complete(&card->mrq_complete);
 476                 return (*mrq)->error;
 477         }
 478
 479         if ((*mrq)->data[offsetof(struct ms_status_register, status0)]
 480             & MEMSTICK_STATUS0_WP)
 481                 msb->read_only = 1;
 482         else
 483                 msb->read_only = 0;
 484
 485         complete(&card->mrq_complete);
 486         return -EAGAIN;
 487 }
 488
 489 static int h_mspro_block_wait_for_ced(struct memstick_dev *card,
 490                                       struct memstick_request **mrq)
 491 {
 492         if ((*mrq)->error) {
 493                 complete(&card->mrq_complete);
 494                 return (*mrq)->error;
 495         }
 496
 497         dev_dbg(&card->dev, "wait for ced: value %x\n", (*mrq)->data[0]);
 498
 499         if ((*mrq)->data[0] & (MEMSTICK_INT_CMDNAK | MEMSTICK_INT_ERR)) {
 500                 card->current_mrq.error = -EFAULT;
 501                 complete(&card->mrq_complete);
 502                 return card->current_mrq.error;
 503         }
 504
 505         if (!((*mrq)->data[0] & MEMSTICK_INT_CED))
 506                 return 0;
 507         else {
 508                 card->current_mrq.error = 0;
 509                 complete(&card->mrq_complete);
 510                 return -EAGAIN;
 511         }
 512 }
 513
 514 static int h_mspro_block_transfer_data(struct memstick_dev *card,
 515                                        struct memstick_request **mrq)
 516 {
 517         struct memstick_host *host = card->host;
 518         struct mspro_block_data *msb = memstick_get_drvdata(card);
 519         unsigned char t_val = 0;
 520         struct scatterlist t_sg = { 0 };
 521         size_t t_offset;
 522
 523         if ((*mrq)->error) {
 524                 complete(&card->mrq_complete);
 525                 return (*mrq)->error;
 526         }
 527
 528         switch ((*mrq)->tpc) {
 529         case MS_TPC_WRITE_REG:
 530                 memstick_init_req(*mrq, MS_TPC_SET_CMD, &msb->transfer_cmd, 1);
 531                 (*mrq)->get_int_reg = 1;
 532                 return 0;
 533         case MS_TPC_SET_CMD:
 534                 t_val = (*mrq)->int_reg;
 535                 memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
 536                 if (host->caps & MEMSTICK_CAP_AUTO_GET_INT)
 537                         goto has_int_reg;
 538                 return 0;
 539         case MS_TPC_GET_INT:
 540                 t_val = (*mrq)->data[0];
 541 has_int_reg:
 542                 if (t_val & (MEMSTICK_INT_CMDNAK | MEMSTICK_INT_ERR)) {
 543                         t_val = MSPRO_CMD_STOP;
 544                         memstick_init_req(*mrq, MS_TPC_SET_CMD, &t_val, 1);
 545                         card->next_request = h_mspro_block_default;
 546                         return 0;
 547                 }
 548
 549                 if (msb->current_page
 550                     == (msb->req_sg[msb->current_seg].length
 551                         / msb->page_size)) {
 552                         msb->current_page = 0;
 553                         msb->current_seg++;
 554
 555                         if (msb->current_seg == msb->seg_count) {
 556                                 if (t_val & MEMSTICK_INT_CED) {
 557                                         complete(&card->mrq_complete);
 558                                         return -EAGAIN;
 559                                 } else {
 560                                         card->next_request
 561                                                 = h_mspro_block_wait_for_ced;
 562                                         memstick_init_req(*mrq, MS_TPC_GET_INT,
 563                                                           NULL, 1);
 564                                         return 0;
 565                                 }
 566                         }
 567                 }
 568
 569                 if (!(t_val & MEMSTICK_INT_BREQ)) {
 570                         memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
 571                         return 0;
 572                 }
 573
 574                 t_offset = msb->req_sg[msb->current_seg].offset;
 575                 t_offset += msb->current_page * msb->page_size;
 576
 577                 sg_set_page(&t_sg,
 578                             nth_page(sg_page(&(msb->req_sg[msb->current_seg])),
 579                                      t_offset >> PAGE_SHIFT),
 580                             msb->page_size, offset_in_page(t_offset));
 581
 582                 memstick_init_req_sg(*mrq, msb->data_dir == READ
 583                                            ? MS_TPC_READ_LONG_DATA
 584                                            : MS_TPC_WRITE_LONG_DATA,
 585                                      &t_sg);
 586                 (*mrq)->get_int_reg = 1;
 587                 return 0;
 588         case MS_TPC_READ_LONG_DATA:
 589         case MS_TPC_WRITE_LONG_DATA:
 590                 msb->current_page++;
 591                 if (host->caps & MEMSTICK_CAP_AUTO_GET_INT) {
 592                         t_val = (*mrq)->int_reg;
 593                         goto has_int_reg;
 594                 } else {
 595                         memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
 596                         return 0;
 597                 }
 598
 599         default:
 600                 BUG();
 601         }
 602 }
 603
 604 /*** Data transfer ***/
 605
 606 static void mspro_block_process_request(struct memstick_dev *card,
 607                                         struct request *req)
 608 {
 609         struct mspro_block_data *msb = memstick_get_drvdata(card);
 610         struct mspro_param_register param;
 611         int rc, chunk, cnt;
 612         unsigned short page_count;
 613         sector_t t_sec;
 614         unsigned long flags;
 615
 616         do {
 617                 page_count = 0;
 618                 msb->current_seg = 0;
 619                 msb->seg_count = blk_rq_map_sg(req->q, req, msb->req_sg);
 620
 621                 if (msb->seg_count) {
 622                         msb->current_page = 0;
 623                         for (rc = 0; rc < msb->seg_count; rc++)
 624                                 page_count += msb->req_sg[rc].length
 625                                               / msb->page_size;
 626
 627                         t_sec = req->sector;
 628                         sector_div(t_sec, msb->page_size >> 9);
 629                         param.system = msb->system;
 630                         param.data_count = cpu_to_be16(page_count);
 631                         param.data_address = cpu_to_be32((uint32_t)t_sec);
 632                         param.cmd_param = 0;
 633
 634                         msb->data_dir = rq_data_dir(req);
 635                         msb->transfer_cmd = msb->data_dir == READ
 636                                             ? MSPRO_CMD_READ_DATA
 637                                             : MSPRO_CMD_WRITE_DATA;
 638
 639                         dev_dbg(&card->dev, "data transfer: cmd %x, "
 640                                 "lba %x, count %x\n", msb->transfer_cmd,
 641                                 be32_to_cpu(param.data_address),
 642                                 page_count);
 643
 644                         card->next_request = h_mspro_block_req_init;
 645                         msb->mrq_handler = h_mspro_block_transfer_data;
 646                         memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG,
 647                                           &param, sizeof(param));
 648                         memstick_new_req(card->host);
 649                         wait_for_completion(&card->mrq_complete);
 650                         rc = card->current_mrq.error;
 651
 652                         if (rc || (card->current_mrq.tpc == MSPRO_CMD_STOP)) {
 653                                 for (cnt = 0; cnt < msb->current_seg; cnt++)
 654                                         page_count += msb->req_sg[cnt].length
 655                                                       / msb->page_size;
 656
 657                                 if (msb->current_page)
 658                                         page_count += msb->current_page - 1;
 659
 660                                 if (page_count && (msb->data_dir == READ))
 661                                         rc = msb->page_size * page_count;
 662                                 else
 663                                         rc = -EIO;
 664                         } else
 665                                 rc = msb->page_size * page_count;
 666                 } else
 667                         rc = -EFAULT;
 668
 669                 spin_lock_irqsave(&msb->q_lock, flags);
 670                 if (rc >= 0)
 671                         chunk = __blk_end_request(req, 0, rc);
 672                 else
 673                         chunk = __blk_end_request(req, rc, 0);
 674
 675                 dev_dbg(&card->dev, "end chunk %d, %d\n", rc, chunk);
 676                 spin_unlock_irqrestore(&msb->q_lock, flags);
 677         } while (chunk);
 678 }
 679
 680 static int mspro_block_has_request(struct mspro_block_data *msb)
 681 {
 682         int rc = 0;
 683         unsigned long flags;
 684
 685         spin_lock_irqsave(&msb->q_lock, flags);
 686         if (kthread_should_stop() || msb->has_request)
 687                 rc = 1;
 688         spin_unlock_irqrestore(&msb->q_lock, flags);
 689         return rc;
 690 }
 691
 692 static int mspro_block_queue_thread(void *data)
 693 {
 694         struct memstick_dev *card = data;
 695         struct memstick_host *host = card->host;
 696         struct mspro_block_data *msb = memstick_get_drvdata(card);
 697         struct request *req;
 698         unsigned long flags;
 699
 700         while (1) {
 701                 wait_event(msb->q_wait, mspro_block_has_request(msb));
 702                 dev_dbg(&card->dev, "thread iter\n");
 703
 704                 spin_lock_irqsave(&msb->q_lock, flags);
 705                 req = elv_next_request(msb->queue);
 706                 dev_dbg(&card->dev, "next req %p\n", req);
 707                 if (!req) {
 708                         msb->has_request = 0;
 709                         if (kthread_should_stop()) {
 710                                 spin_unlock_irqrestore(&msb->q_lock, flags);
 711                                 break;
 712                         }
 713                 } else
 714                         msb->has_request = 1;
 715                 spin_unlock_irqrestore(&msb->q_lock, flags);
 716
 717                 if (req) {
 718                         mutex_lock(&host->lock);
 719                         mspro_block_process_request(card, req);
 720                         mutex_unlock(&host->lock);
 721                 }
 722         }
 723         dev_dbg(&card->dev, "thread finished\n");
 724         return 0;
 725 }
 726
 727 static void mspro_block_request(struct request_queue *q)
 728 {
 729         struct memstick_dev *card = q->queuedata;
 730         struct mspro_block_data *msb = memstick_get_drvdata(card);
 731         struct request *req = NULL;
 732
 733         if (msb->q_thread) {
 734                 msb->has_request = 1;
 735                 wake_up_all(&msb->q_wait);
 736         } else {
 737                 while ((req = elv_next_request(q)) != NULL)
 738                         end_queued_request(req, -ENODEV);
 739         }
 740 }
 741
 742 /*** Initialization ***/
 743
 744 static int mspro_block_wait_for_ced(struct memstick_dev *card)
 745 {
 746         struct mspro_block_data *msb = memstick_get_drvdata(card);
 747
 748         card->next_request = h_mspro_block_req_init;
 749         msb->mrq_handler = h_mspro_block_wait_for_ced;
 750         memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1);
 751         memstick_new_req(card->host);
 752         wait_for_completion(&card->mrq_complete);
 753         return card->current_mrq.error;
 754 }
 755
 756 static int mspro_block_switch_to_parallel(struct memstick_dev *card)
 757 {
 758         struct memstick_host *host = card->host;
 759         struct mspro_block_data *msb = memstick_get_drvdata(card);
 760         struct mspro_param_register param = {
 761                 .system = 0,
 762                 .data_count = 0,
 763                 .data_address = 0,
 764                 .cmd_param = 0
 765         };
 766
 767         card->next_request = h_mspro_block_req_init;
 768         msb->mrq_handler = h_mspro_block_default;
 769         memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, &param,
 770                           sizeof(param));
 771         memstick_new_req(host);
 772         wait_for_completion(&card->mrq_complete);
 773         if (card->current_mrq.error)
 774                 return card->current_mrq.error;
 775
 776         msb->system = 0;
 777         host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_PARALLEL);
 778
 779         card->next_request = h_mspro_block_req_init;
 780         msb->mrq_handler = h_mspro_block_default;
 781         memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1);
 782         memstick_new_req(card->host);
 783         wait_for_completion(&card->mrq_complete);
 784
 785         if (card->current_mrq.error) {
 786                 msb->system = 0x80;
 787                 host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_SERIAL);
 788                 return -EFAULT;
 789         }
 790
 791         return 0;
 792 }
 793
 794 /* Memory allocated for attributes by this function should be freed by
 795  * mspro_block_data_clear, no matter if the initialization process succeded
 796  * or failed.
 797  */
 798 static int mspro_block_read_attributes(struct memstick_dev *card)
 799 {
 800         struct mspro_block_data *msb = memstick_get_drvdata(card);
 801         struct mspro_param_register param = {
 802                 .system = msb->system,
 803                 .data_count = cpu_to_be16(1),
 804                 .data_address = 0,
 805                 .cmd_param = 0
 806         };
 807         struct mspro_attribute *attr = NULL;
 808         struct mspro_sys_attr *s_attr = NULL;
 809         unsigned char *buffer = NULL;
 810         int cnt, rc, attr_count;
 811         unsigned int addr;
 812         unsigned short page_count;
 813
 814         attr = kmalloc(msb->page_size, GFP_KERNEL);
 815         if (!attr)
 816                 return -ENOMEM;
 817
 818         sg_init_one(&msb->req_sg[0], attr, msb->page_size);
 819         msb->seg_count = 1;
 820         msb->current_seg = 0;
 821         msb->current_page = 0;
 822         msb->data_dir = READ;
 823         msb->transfer_cmd = MSPRO_CMD_READ_ATRB;
 824
 825         card->next_request = h_mspro_block_req_init;
 826         msb->mrq_handler = h_mspro_block_transfer_data;
 827         memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, &param,
 828                           sizeof(param));
 829         memstick_new_req(card->host);
 830         wait_for_completion(&card->mrq_complete);
 831         if (card->current_mrq.error) {
 832                 rc = card->current_mrq.error;
 833                 goto out_free_attr;
 834         }
 835
 836         if (be16_to_cpu(attr->signature) != MSPRO_BLOCK_SIGNATURE) {
 837                 printk(KERN_ERR "%s: unrecognized device signature %x\n",
 838                        card->dev.bus_id, be16_to_cpu(attr->signature));
 839                 rc = -ENODEV;
 840                 goto out_free_attr;
 841         }
 842
 843         if (attr->count > MSPRO_BLOCK_MAX_ATTRIBUTES) {
 844                 printk(KERN_WARNING "%s: way too many attribute entries\n",
 845                        card->dev.bus_id);
 846                 attr_count = MSPRO_BLOCK_MAX_ATTRIBUTES;
 847         } else
 848                 attr_count = attr->count;
 849
 850         msb->attr_group.attrs = kzalloc((attr_count + 1)
 851                                         * sizeof(struct attribute),
 852                                         GFP_KERNEL);
 853         if (!msb->attr_group.attrs) {
 854                 rc = -ENOMEM;
 855                 goto out_free_attr;
 856         }
 857         msb->attr_group.name = "media_attributes";
 858
 859         buffer = kmalloc(msb->page_size, GFP_KERNEL);
 860         if (!buffer) {
 861                 rc = -ENOMEM;
 862                 goto out_free_attr;
 863         }
 864         memcpy(buffer, (char *)attr, msb->page_size);
 865         page_count = 1;
 866
 867         for (cnt = 0; cnt < attr_count; ++cnt) {
 868                 s_attr = kzalloc(sizeof(struct mspro_sys_attr), GFP_KERNEL);
 869                 if (!s_attr) {
 870                         rc = -ENOMEM;
 871                         goto out_free_buffer;
 872                 }
 873
 874                 msb->attr_group.attrs[cnt] = &s_attr->dev_attr.attr;
 875                 addr = be32_to_cpu(attr->entries[cnt].address);
 876                 rc = be32_to_cpu(attr->entries[cnt].size);
 877                 dev_dbg(&card->dev, "adding attribute %d: id %x, address %x, "
 878                         "size %x\n", cnt, attr->entries[cnt].id, addr, rc);
 879                 s_attr->id = attr->entries[cnt].id;
 880                 if (mspro_block_attr_name(s_attr->id))
 881                         snprintf(s_attr->name, sizeof(s_attr->name), "%s",
 882                                  mspro_block_attr_name(attr->entries[cnt].id));
 883                 else
 884                         snprintf(s_attr->name, sizeof(s_attr->name),
 885                                  "attr_x%02x", attr->entries[cnt].id);
 886
 887                 s_attr->dev_attr.attr.name = s_attr->name;
 888                 s_attr->dev_attr.attr.mode = S_IRUGO;
 889                 s_attr->dev_attr.attr.owner = THIS_MODULE;
 890                 s_attr->dev_attr.show = mspro_block_attr_show(s_attr->id);
 891
 892                 if (!rc)
 893                         continue;
 894
 895                 s_attr->size = rc;
 896                 s_attr->data = kmalloc(rc, GFP_KERNEL);
 897                 if (!s_attr->data) {
 898                         rc = -ENOMEM;
 899                         goto out_free_buffer;
 900                 }
 901
 902                 if (((addr / msb->page_size)
 903                      == be32_to_cpu(param.data_address))
 904                     && (((addr + rc - 1) / msb->page_size)
 905                         == be32_to_cpu(param.data_address))) {
 906                         memcpy(s_attr->data, buffer + addr % msb->page_size,
 907                                rc);
 908                         continue;
 909                 }
 910
 911                 if (page_count <= (rc / msb->page_size)) {
 912                         kfree(buffer);
 913                         page_count = (rc / msb->page_size) + 1;
 914                         buffer = kmalloc(page_count * msb->page_size,
 915                                          GFP_KERNEL);
 916                         if (!buffer) {
 917                                 rc = -ENOMEM;
 918                                 goto out_free_attr;
 919                         }
 920                 }
 921
 922                 param.system = msb->system;
 923                 param.data_count = cpu_to_be16((rc / msb->page_size) + 1);
 924                 param.data_address = cpu_to_be32(addr / msb->page_size);
 925                 param.cmd_param = 0;
 926
 927                 sg_init_one(&msb->req_sg[0], buffer,
 928                             be16_to_cpu(param.data_count) * msb->page_size);
 929                 msb->seg_count = 1;
 930                 msb->current_seg = 0;
 931                 msb->current_page = 0;
 932                 msb->data_dir = READ;
 933                 msb->transfer_cmd = MSPRO_CMD_READ_ATRB;
 934
 935                 dev_dbg(&card->dev, "reading attribute pages %x, %x\n",
 936                         be32_to_cpu(param.data_address),
 937                         be16_to_cpu(param.data_count));
 938
 939                 card->next_request = h_mspro_block_req_init;
 940                 msb->mrq_handler = h_mspro_block_transfer_data;
 941                 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG,
 942                                   (char *)&param, sizeof(param));
 943                 memstick_new_req(card->host);
 944                 wait_for_completion(&card->mrq_complete);
 945                 if (card->current_mrq.error) {
 946                         rc = card->current_mrq.error;
 947                         goto out_free_buffer;
 948                 }
 949
 950                 memcpy(s_attr->data, buffer + addr % msb->page_size, rc);
 951         }
 952
 953         rc = 0;
 954 out_free_buffer:
 955         kfree(buffer);
 956 out_free_attr:
 957         kfree(attr);
 958         return rc;
 959 }
 960
 961 static int mspro_block_init_card(struct memstick_dev *card)
 962 {
 963         struct mspro_block_data *msb = memstick_get_drvdata(card);
 964         struct memstick_host *host = card->host;
 965         int rc = 0;
 966
 967         msb->system = 0x80;
 968         card->reg_addr.r_offset = offsetof(struct mspro_register, status);
 969         card->reg_addr.r_length = sizeof(struct ms_status_register);
 970         card->reg_addr.w_offset = offsetof(struct mspro_register, param);
 971         card->reg_addr.w_length = sizeof(struct mspro_param_register);
 972
 973         if (memstick_set_rw_addr(card))
 974                 return -EIO;
 975
 976         if (host->caps & MEMSTICK_CAP_PARALLEL) {
 977                 if (mspro_block_switch_to_parallel(card))
 978                         printk(KERN_WARNING "%s: could not switch to "
 979                                "parallel interface\n", card->dev.bus_id);
 980         }
 981
 982         rc = mspro_block_wait_for_ced(card);
 983         if (rc)
 984                 return rc;
 985         dev_dbg(&card->dev, "card activated\n");
 986
 987         card->next_request = h_mspro_block_req_init;
 988         msb->mrq_handler = h_mspro_block_get_ro;
 989         memstick_init_req(&card->current_mrq, MS_TPC_READ_REG, NULL,
 990                           sizeof(struct ms_status_register));
 991         memstick_new_req(card->host);
 992         wait_for_completion(&card->mrq_complete);
 993         if (card->current_mrq.error)
 994                 return card->current_mrq.error;
 995
 996         dev_dbg(&card->dev, "card r/w status %d\n", msb->read_only ? 0 : 1);
 997
 998         msb->page_size = 512;
 999         rc = mspro_block_read_attributes(card);
1000         if (rc)
1001                 return rc;
1002
1003         dev_dbg(&card->dev, "attributes loaded\n");
1004         return 0;
1005
1006 }
1007
1008 static int mspro_block_init_disk(struct memstick_dev *card)
1009 {
1010         struct mspro_block_data *msb = memstick_get_drvdata(card);
1011         struct memstick_host *host = card->host;
1012         struct mspro_devinfo *dev_info = NULL;
1013         struct mspro_sys_info *sys_info = NULL;
1014         struct mspro_sys_attr *s_attr = NULL;
1015         int rc, disk_id;
1016         u64 limit = BLK_BOUNCE_HIGH;
1017         unsigned long capacity;
1018
1019         if (host->cdev.dev->dma_mask && *(host->cdev.dev->dma_mask))
1020                 limit = *(host->cdev.dev->dma_mask);
1021
1022         for (rc = 0; msb->attr_group.attrs[rc]; ++rc) {
1023                 s_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[rc]);
1024
1025                 if (s_attr->id == MSPRO_BLOCK_ID_DEVINFO)
1026                         dev_info = s_attr->data;
1027                 else if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO)
1028                         sys_info = s_attr->data;
1029         }
1030
1031         if (!dev_info || !sys_info)
1032                 return -ENODEV;
1033
1034         msb->cylinders = be16_to_cpu(dev_info->cylinders);
1035         msb->heads = be16_to_cpu(dev_info->heads);
1036         msb->sectors_per_track = be16_to_cpu(dev_info->sectors_per_track);
1037
1038         msb->page_size = be16_to_cpu(sys_info->unit_size);
1039
1040         if (!idr_pre_get(&mspro_block_disk_idr, GFP_KERNEL))
1041                 return -ENOMEM;
1042
1043         mutex_lock(&mspro_block_disk_lock);
1044         rc = idr_get_new(&mspro_block_disk_idr, card, &disk_id);
1045         mutex_unlock(&mspro_block_disk_lock);
1046
1047         if (rc)
1048                 return rc;
1049
1050         if ((disk_id << MEMSTICK_PART_SHIFT) > 255) {
1051                 rc = -ENOSPC;
1052                 goto out_release_id;
1053         }
1054
1055         msb->disk = alloc_disk(1 << MEMSTICK_PART_SHIFT);
1056         if (!msb->disk) {
1057                 rc = -ENOMEM;
1058                 goto out_release_id;
1059         }
1060
1061         spin_lock_init(&msb->q_lock);
1062         init_waitqueue_head(&msb->q_wait);
1063
1064         msb->queue = blk_init_queue(mspro_block_request, &msb->q_lock);
1065         if (!msb->queue) {
1066                 rc = -ENOMEM;
1067                 goto out_put_disk;
1068         }
1069
1070         msb->queue->queuedata = card;
1071
1072         blk_queue_bounce_limit(msb->queue, limit);
1073         blk_queue_max_sectors(msb->queue, MSPRO_BLOCK_MAX_PAGES);
1074         blk_queue_max_phys_segments(msb->queue, MSPRO_BLOCK_MAX_SEGS);
1075         blk_queue_max_hw_segments(msb->queue, MSPRO_BLOCK_MAX_SEGS);
1076         blk_queue_max_segment_size(msb->queue,
1077                                    MSPRO_BLOCK_MAX_PAGES * msb->page_size);
1078
1079         msb->disk->major = major;
1080         msb->disk->first_minor = disk_id << MEMSTICK_PART_SHIFT;
1081         msb->disk->fops = &ms_block_bdops;
1082         msb->usage_count = 1;
1083         msb->disk->private_data = msb;
1084         msb->disk->queue = msb->queue;
1085         msb->disk->driverfs_dev = &card->dev;
1086
1087         sprintf(msb->disk->disk_name, "mspblk%d", disk_id);
1088
1089         blk_queue_hardsect_size(msb->queue, msb->page_size);
1090
1091         capacity = be16_to_cpu(sys_info->user_block_count);
1092         capacity *= be16_to_cpu(sys_info->block_size);
1093         capacity *= msb->page_size >> 9;
1094         set_capacity(msb->disk, capacity);
1095         dev_dbg(&card->dev, "capacity set %ld\n", capacity);
1096         msb->q_thread = kthread_run(mspro_block_queue_thread, card,
1097                                     DRIVER_NAME"d");
1098         if (IS_ERR(msb->q_thread))
1099                 goto out_put_disk;
1100
1101         mutex_unlock(&host->lock);
1102         add_disk(msb->disk);
1103         mutex_lock(&host->lock);
1104         msb->active = 1;
1105         return 0;
1106
1107 out_put_disk:
1108         put_disk(msb->disk);
1109 out_release_id:
1110         mutex_lock(&mspro_block_disk_lock);
1111         idr_remove(&mspro_block_disk_idr, disk_id);
1112         mutex_unlock(&mspro_block_disk_lock);
1113         return rc;
1114 }
1115
1116 static void mspro_block_data_clear(struct mspro_block_data *msb)
1117 {
1118         int cnt;
1119         struct mspro_sys_attr *s_attr;
1120
1121         if (msb->attr_group.attrs) {
1122                 for (cnt = 0; msb->attr_group.attrs[cnt]; ++cnt) {
1123                         s_attr = mspro_from_sysfs_attr(msb->attr_group
1124                                                            .attrs[cnt]);
1125                         kfree(s_attr->data);
1126                         kfree(s_attr);
1127                 }
1128                 kfree(msb->attr_group.attrs);
1129         }
1130
1131         msb->card = NULL;
1132 }
1133
1134 static int mspro_block_check_card(struct memstick_dev *card)
1135 {
1136         struct mspro_block_data *msb = memstick_get_drvdata(card);
1137
1138         return (msb->active == 1);
1139 }
1140
1141 static int mspro_block_probe(struct memstick_dev *card)
1142 {
1143         struct mspro_block_data *msb;
1144         int rc = 0;
1145
1146         msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL);
1147         if (!msb)
1148                 return -ENOMEM;
1149         memstick_set_drvdata(card, msb);
1150         msb->card = card;
1151
1152         rc = mspro_block_init_card(card);
1153
1154         if (rc)
1155                 goto out_free;
1156
1157         rc = sysfs_create_group(&card->dev.kobj, &msb->attr_group);
1158         if (rc)
1159                 goto out_free;
1160
1161         rc = mspro_block_init_disk(card);
1162         if (!rc) {
1163                 card->check = mspro_block_check_card;
1164                 return 0;
1165         }
1166
1167         sysfs_remove_group(&card->dev.kobj, &msb->attr_group);
1168 out_free:
1169         memstick_set_drvdata(card, NULL);
1170         mspro_block_data_clear(msb);
1171         kfree(msb);
1172         return rc;
1173 }
1174
1175 static void mspro_block_remove(struct memstick_dev *card)
1176 {
1177         struct mspro_block_data *msb = memstick_get_drvdata(card);
1178         struct task_struct *q_thread = NULL;
1179         unsigned long flags;
1180
1181         del_gendisk(msb->disk);
1182         dev_dbg(&card->dev, "mspro block remove\n");
1183         spin_lock_irqsave(&msb->q_lock, flags);
1184         q_thread = msb->q_thread;
1185         msb->q_thread = NULL;
1186         msb->active = 0;
1187         spin_unlock_irqrestore(&msb->q_lock, flags);
1188
1189         if (q_thread) {
1190                 mutex_unlock(&card->host->lock);
1191                 kthread_stop(q_thread);
1192                 mutex_lock(&card->host->lock);
1193         }
1194
1195         dev_dbg(&card->dev, "queue thread stopped\n");
1196
1197         blk_cleanup_queue(msb->queue);
1198
1199         sysfs_remove_group(&card->dev.kobj, &msb->attr_group);
1200
1201         mutex_lock(&mspro_block_disk_lock);
1202         mspro_block_data_clear(msb);
1203         mutex_unlock(&mspro_block_disk_lock);
1204
1205         mspro_block_disk_release(msb->disk);
1206         memstick_set_drvdata(card, NULL);
1207 }
1208
1209 #ifdef CONFIG_PM
1210
1211 static int mspro_block_suspend(struct memstick_dev *card, pm_message_t state)
1212 {
1213         struct mspro_block_data *msb = memstick_get_drvdata(card);
1214         struct task_struct *q_thread = NULL;
1215         unsigned long flags;
1216
1217         spin_lock_irqsave(&msb->q_lock, flags);
1218         q_thread = msb->q_thread;
1219         msb->q_thread = NULL;
1220         msb->active = 0;
1221         blk_stop_queue(msb->queue);
1222         spin_unlock_irqrestore(&msb->q_lock, flags);
1223
1224         if (q_thread)
1225                 kthread_stop(q_thread);
1226
1227         return 0;
1228 }
1229
1230 static int mspro_block_resume(struct memstick_dev *card)
1231 {
1232         struct mspro_block_data *msb = memstick_get_drvdata(card);
1233         unsigned long flags;
1234         int rc = 0;
1235
1236 #ifdef CONFIG_MEMSTICK_UNSAFE_RESUME
1237
1238         struct mspro_block_data *new_msb;
1239         struct memstick_host *host = card->host;
1240         struct mspro_sys_attr *s_attr, *r_attr;
1241         unsigned char cnt;
1242
1243         mutex_lock(&host->lock);
1244         new_msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL);
1245         if (!new_msb) {
1246                 rc = -ENOMEM;
1247                 goto out_unlock;
1248         }
1249
1250         new_msb->card = card;
1251         memstick_set_drvdata(card, new_msb);
1252         if (mspro_block_init_card(card))
1253                 goto out_free;
1254
1255         for (cnt = 0; new_msb->attr_group.attrs[cnt]
1256                       && msb->attr_group.attrs[cnt]; ++cnt) {
1257                 s_attr = mspro_from_sysfs_attr(new_msb->attr_group.attrs[cnt]);
1258                 r_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[cnt]);
1259
1260                 if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO
1261                     && r_attr->id == s_attr->id) {
1262                         if (memcmp(s_attr->data, r_attr->data, s_attr->size))
1263                                 break;
1264
1265                         memstick_set_drvdata(card, msb);
1266                         msb->q_thread = kthread_run(mspro_block_queue_thread,
1267                                                     card, DRIVER_NAME"d");
1268                         if (IS_ERR(msb->q_thread))
1269                                 msb->q_thread = NULL;
1270                         else
1271                                 msb->active = 1;
1272
1273                         break;
1274                 }
1275         }
1276
1277 out_free:
1278         memstick_set_drvdata(card, msb);
1279         mspro_block_data_clear(new_msb);
1280         kfree(new_msb);
1281 out_unlock:
1282         mutex_unlock(&host->lock);
1283
1284 #endif /* CONFIG_MEMSTICK_UNSAFE_RESUME */
1285
1286         spin_lock_irqsave(&msb->q_lock, flags);
1287         blk_start_queue(msb->queue);
1288         spin_unlock_irqrestore(&msb->q_lock, flags);
1289         return rc;
1290 }
1291
1292 #else
1293
1294 #define mspro_block_suspend NULL
1295 #define mspro_block_resume NULL
1296
1297 #endif /* CONFIG_PM */
1298
1299 static struct memstick_device_id mspro_block_id_tbl[] = {
1300         {MEMSTICK_MATCH_ALL, MEMSTICK_TYPE_PRO, MEMSTICK_CATEGORY_STORAGE_DUO,
1301          MEMSTICK_CLASS_GENERIC_DUO},
1302         {}
1303 };
1304
1305
1306 static struct memstick_driver mspro_block_driver = {
1307         .driver = {
1308                 .name  = DRIVER_NAME,
1309                 .owner = THIS_MODULE
1310         },
1311         .id_table = mspro_block_id_tbl,
1312         .probe    = mspro_block_probe,
1313         .remove   = mspro_block_remove,
1314         .suspend  = mspro_block_suspend,
1315         .resume   = mspro_block_resume
1316 };
1317
1318 static int __init mspro_block_init(void)
1319 {
1320         int rc = -ENOMEM;
1321
1322         rc = register_blkdev(major, DRIVER_NAME);
1323         if (rc < 0) {
1324                 printk(KERN_ERR DRIVER_NAME ": failed to register "
1325                        "major %d, error %d\n", major, rc);
1326                 return rc;
1327         }
1328         if (!major)
1329                 major = rc;
1330
1331         rc = memstick_register_driver(&mspro_block_driver);
1332         if (rc)
1333                 unregister_blkdev(major, DRIVER_NAME);
1334         return rc;
1335 }
1336
1337 static void __exit mspro_block_exit(void)
1338 {
1339         memstick_unregister_driver(&mspro_block_driver);
1340         unregister_blkdev(major, DRIVER_NAME);
1341         idr_destroy(&mspro_block_disk_idr);
1342 }
1343
1344 module_init(mspro_block_init);
1345 module_exit(mspro_block_exit);
1346
1347 MODULE_LICENSE("GPL");
1348 MODULE_AUTHOR("Alex Dubov");
1349 MODULE_DESCRIPTION("Sony MemoryStickPro block device driver");
1350 MODULE_DEVICE_TABLE(memstick, mspro_block_id_tbl);
1351 MODULE_VERSION(DRIVER_VERSION);