drivers/memstick/core/mspro_block.c

   1 /*
   2  *  Sony MemoryStick Pro storage support
   3  *
   4  *  Copyright (C) 2007 Alex Dubov <oakad@yahoo.com>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  *
  10  * Special thanks to Carlos Corbacho for providing various MemoryStick cards
  11  * that made this driver possible.
  12  *
  13  */
  14
  15 #include <linux/blkdev.h>
  16 #include <linux/idr.h>
  17 #include <linux/hdreg.h>
  18 #include <linux/kthread.h>
  19 #include <linux/delay.h>
  20 #include <linux/slab.h>
  21 #include <linux/mutex.h>
  22 #include <linux/memstick.h>
  23
  24 #define DRIVER_NAME "mspro_block"
  25
  26 static DEFINE_MUTEX(mspro_block_mutex);
  27 static int major;
  28 module_param(major, int, 0644);
  29
  30 #define MSPRO_BLOCK_MAX_SEGS  32
  31 #define MSPRO_BLOCK_MAX_PAGES ((2 << 16) - 1)
  32
  33 #define MSPRO_BLOCK_SIGNATURE        0xa5c3
  34 #define MSPRO_BLOCK_MAX_ATTRIBUTES   41
  35
  36 #define MSPRO_BLOCK_PART_SHIFT 3
  37
  38 enum {
  39         MSPRO_BLOCK_ID_SYSINFO         = 0x10,
  40         MSPRO_BLOCK_ID_MODELNAME       = 0x15,
  41         MSPRO_BLOCK_ID_MBR             = 0x20,
  42         MSPRO_BLOCK_ID_PBR16           = 0x21,
  43         MSPRO_BLOCK_ID_PBR32           = 0x22,
  44         MSPRO_BLOCK_ID_SPECFILEVALUES1 = 0x25,
  45         MSPRO_BLOCK_ID_SPECFILEVALUES2 = 0x26,
  46         MSPRO_BLOCK_ID_DEVINFO         = 0x30
  47 };
  48
  49 struct mspro_sys_attr {
  50         size_t                  size;
  51         void                    *data;
  52         unsigned char           id;
  53         char                    name[32];
  54         struct device_attribute dev_attr;
  55 };
  56
  57 struct mspro_attr_entry {
  58         __be32 address;
  59         __be32 size;
  60         unsigned char id;
  61         unsigned char reserved[3];
  62 } __attribute__((packed));
  63
  64 struct mspro_attribute {
  65         __be16 signature;
  66         unsigned short          version;
  67         unsigned char           count;
  68         unsigned char           reserved[11];
  69         struct mspro_attr_entry entries[];
  70 } __attribute__((packed));
  71
  72 struct mspro_sys_info {
  73         unsigned char  class;
  74         unsigned char  reserved0;
  75         __be16 block_size;
  76         __be16 block_count;
  77         __be16 user_block_count;
  78         __be16 page_size;
  79         unsigned char  reserved1[2];
  80         unsigned char  assembly_date[8];
  81         __be32 serial_number;
  82         unsigned char  assembly_maker_code;
  83         unsigned char  assembly_model_code[3];
  84         __be16 memory_maker_code;
  85         __be16 memory_model_code;
  86         unsigned char  reserved2[4];
  87         unsigned char  vcc;
  88         unsigned char  vpp;
  89         __be16 controller_number;
  90         __be16 controller_function;
  91         __be16 start_sector;
  92         __be16 unit_size;
  93         unsigned char  ms_sub_class;
  94         unsigned char  reserved3[4];
  95         unsigned char  interface_type;
  96         __be16 controller_code;
  97         unsigned char  format_type;
  98         unsigned char  reserved4;
  99         unsigned char  device_type;
 100         unsigned char  reserved5[7];
 101         unsigned char  mspro_id[16];
 102         unsigned char  reserved6[16];
 103 } __attribute__((packed));
 104
 105 struct mspro_mbr {
 106         unsigned char boot_partition;
 107         unsigned char start_head;
 108         unsigned char start_sector;
 109         unsigned char start_cylinder;
 110         unsigned char partition_type;
 111         unsigned char end_head;
 112         unsigned char end_sector;
 113         unsigned char end_cylinder;
 114         unsigned int  start_sectors;
 115         unsigned int  sectors_per_partition;
 116 } __attribute__((packed));
 117
 118 struct mspro_specfile {
 119         char           name[8];
 120         char           ext[3];
 121         unsigned char  attr;
 122         unsigned char  reserved[10];
 123         unsigned short time;
 124         unsigned short date;
 125         unsigned short cluster;
 126         unsigned int   size;
 127 } __attribute__((packed));
 128
 129 struct mspro_devinfo {
 130         __be16 cylinders;
 131         __be16 heads;
 132         __be16 bytes_per_track;
 133         __be16 bytes_per_sector;
 134         __be16 sectors_per_track;
 135         unsigned char  reserved[6];
 136 } __attribute__((packed));
 137
 138 struct mspro_block_data {
 139         struct memstick_dev   *card;
 140         unsigned int          usage_count;
 141         unsigned int          caps;
 142         struct gendisk        *disk;
 143         struct request_queue  *queue;
 144         struct request        *block_req;
 145         spinlock_t            q_lock;
 146
 147         unsigned short        page_size;
 148         unsigned short        cylinders;
 149         unsigned short        heads;
 150         unsigned short        sectors_per_track;
 151
 152         unsigned char         system;
 153         unsigned char         read_only:1,
 154                               eject:1,
 155                               has_request:1,
 156                               data_dir:1,
 157                               active:1;
 158         unsigned char         transfer_cmd;
 159
 160         int                   (*mrq_handler)(struct memstick_dev *card,
 161                                              struct memstick_request **mrq);
 162
 163         struct attribute_group attr_group;
 164
 165         struct scatterlist    req_sg[MSPRO_BLOCK_MAX_SEGS];
 166         unsigned int          seg_count;
 167         unsigned int          current_seg;
 168         unsigned int          current_page;
 169 };
 170
 171 static DEFINE_IDR(mspro_block_disk_idr);
 172 static DEFINE_MUTEX(mspro_block_disk_lock);
 173
 174 static int mspro_block_complete_req(struct memstick_dev *card, int error);
 175
 176 /*** Block device ***/
 177
 178 static int mspro_block_bd_open(struct block_device *bdev, fmode_t mode)
 179 {
 180         struct gendisk *disk = bdev->bd_disk;
 181         struct mspro_block_data *msb = disk->private_data;
 182         int rc = -ENXIO;
 183
 184         mutex_lock(&mspro_block_mutex);
 185         mutex_lock(&mspro_block_disk_lock);
 186
 187         if (msb && msb->card) {
 188                 msb->usage_count++;
 189                 if ((mode & FMODE_WRITE) && msb->read_only)
 190                         rc = -EROFS;
 191                 else
 192                         rc = 0;
 193         }
 194
 195         mutex_unlock(&mspro_block_disk_lock);
 196         mutex_unlock(&mspro_block_mutex);
 197
 198         return rc;
 199 }
 200
 201
 202 static int mspro_block_disk_release(struct gendisk *disk)
 203 {
 204         struct mspro_block_data *msb = disk->private_data;
 205         int disk_id = MINOR(disk_devt(disk)) >> MSPRO_BLOCK_PART_SHIFT;
 206
 207         mutex_lock(&mspro_block_disk_lock);
 208
 209         if (msb) {
 210                 if (msb->usage_count)
 211                         msb->usage_count--;
 212
 213                 if (!msb->usage_count) {
 214                         kfree(msb);
 215                         disk->private_data = NULL;
 216                         idr_remove(&mspro_block_disk_idr, disk_id);
 217                         put_disk(disk);
 218                 }
 219         }
 220
 221         mutex_unlock(&mspro_block_disk_lock);
 222
 223         return 0;
 224 }
 225
 226 static int mspro_block_bd_release(struct gendisk *disk, fmode_t mode)
 227 {
 228         int ret;
 229         mutex_lock(&mspro_block_mutex);
 230         ret = mspro_block_disk_release(disk);
 231         mutex_unlock(&mspro_block_mutex);
 232         return ret;
 233 }
 234
 235 static int mspro_block_bd_getgeo(struct block_device *bdev,
 236                                  struct hd_geometry *geo)
 237 {
 238         struct mspro_block_data *msb = bdev->bd_disk->private_data;
 239
 240         geo->heads = msb->heads;
 241         geo->sectors = msb->sectors_per_track;
 242         geo->cylinders = msb->cylinders;
 243
 244         return 0;
 245 }
 246
 247 static const struct block_device_operations ms_block_bdops = {
 248         .open    = mspro_block_bd_open,
 249         .release = mspro_block_bd_release,
 250         .getgeo  = mspro_block_bd_getgeo,
 251         .owner   = THIS_MODULE
 252 };
 253
 254 /*** Information ***/
 255
 256 static struct mspro_sys_attr *mspro_from_sysfs_attr(struct attribute *attr)
 257 {
 258         struct device_attribute *dev_attr
 259                 = container_of(attr, struct device_attribute, attr);
 260         return container_of(dev_attr, struct mspro_sys_attr, dev_attr);
 261 }
 262
 263 static const char *mspro_block_attr_name(unsigned char tag)
 264 {
 265         switch (tag) {
 266         case MSPRO_BLOCK_ID_SYSINFO:
 267                 return "attr_sysinfo";
 268         case MSPRO_BLOCK_ID_MODELNAME:
 269                 return "attr_modelname";
 270         case MSPRO_BLOCK_ID_MBR:
 271                 return "attr_mbr";
 272         case MSPRO_BLOCK_ID_PBR16:
 273                 return "attr_pbr16";
 274         case MSPRO_BLOCK_ID_PBR32:
 275                 return "attr_pbr32";
 276         case MSPRO_BLOCK_ID_SPECFILEVALUES1:
 277                 return "attr_specfilevalues1";
 278         case MSPRO_BLOCK_ID_SPECFILEVALUES2:
 279                 return "attr_specfilevalues2";
 280         case MSPRO_BLOCK_ID_DEVINFO:
 281                 return "attr_devinfo";
 282         default:
 283                 return NULL;
 284         };
 285 }
 286
 287 typedef ssize_t (*sysfs_show_t)(struct device *dev,
 288                                 struct device_attribute *attr,
 289                                 char *buffer);
 290
 291 static ssize_t mspro_block_attr_show_default(struct device *dev,
 292                                              struct device_attribute *attr,
 293                                              char *buffer)
 294 {
 295         struct mspro_sys_attr *s_attr = container_of(attr,
 296                                                      struct mspro_sys_attr,
 297                                                      dev_attr);
 298
 299         ssize_t cnt, rc = 0;
 300
 301         for (cnt = 0; cnt < s_attr->size; cnt++) {
 302                 if (cnt && !(cnt % 16)) {
 303                         if (PAGE_SIZE - rc)
 304                                 buffer[rc++] = '\n';
 305                 }
 306
 307                 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "%02x ",
 308                                 ((unsigned char *)s_attr->data)[cnt]);
 309         }
 310         return rc;
 311 }
 312
 313 static ssize_t mspro_block_attr_show_sysinfo(struct device *dev,
 314                                              struct device_attribute *attr,
 315                                              char *buffer)
 316 {
 317         struct mspro_sys_attr *x_attr = container_of(attr,
 318                                                      struct mspro_sys_attr,
 319                                                      dev_attr);
 320         struct mspro_sys_info *x_sys = x_attr->data;
 321         ssize_t rc = 0;
 322         int date_tz = 0, date_tz_f = 0;
 323
 324         if (x_sys->assembly_date[0] > 0x80U) {
 325                 date_tz = (~x_sys->assembly_date[0]) + 1;
 326                 date_tz_f = date_tz & 3;
 327                 date_tz >>= 2;
 328                 date_tz = -date_tz;
 329                 date_tz_f *= 15;
 330         } else if (x_sys->assembly_date[0] < 0x80U) {
 331                 date_tz = x_sys->assembly_date[0];
 332                 date_tz_f = date_tz & 3;
 333                 date_tz >>= 2;
 334                 date_tz_f *= 15;
 335         }
 336
 337         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "class: %x\n",
 338                         x_sys->class);
 339         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "block size: %x\n",
 340                         be16_to_cpu(x_sys->block_size));
 341         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "block count: %x\n",
 342                         be16_to_cpu(x_sys->block_count));
 343         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "user block count: %x\n",
 344                         be16_to_cpu(x_sys->user_block_count));
 345         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "page size: %x\n",
 346                         be16_to_cpu(x_sys->page_size));
 347         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "assembly date: "
 348                         "GMT%+d:%d %04u-%02u-%02u %02u:%02u:%02u\n",
 349                         date_tz, date_tz_f,
 350                         be16_to_cpup((__be16 *)&x_sys->assembly_date[1]),
 351                         x_sys->assembly_date[3], x_sys->assembly_date[4],
 352                         x_sys->assembly_date[5], x_sys->assembly_date[6],
 353                         x_sys->assembly_date[7]);
 354         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "serial number: %x\n",
 355                         be32_to_cpu(x_sys->serial_number));
 356         rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
 357                         "assembly maker code: %x\n",
 358                         x_sys->assembly_maker_code);
 359         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "assembly model code: "
 360                         "%02x%02x%02x\n", x_sys->assembly_model_code[0],
 361                         x_sys->assembly_model_code[1],
 362                         x_sys->assembly_model_code[2]);
 363         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "memory maker code: %x\n",
 364                         be16_to_cpu(x_sys->memory_maker_code));
 365         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "memory model code: %x\n",
 366                         be16_to_cpu(x_sys->memory_model_code));
 367         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "vcc: %x\n",
 368                         x_sys->vcc);
 369         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "vpp: %x\n",
 370                         x_sys->vpp);
 371         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "controller number: %x\n",
 372                         be16_to_cpu(x_sys->controller_number));
 373         rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
 374                         "controller function: %x\n",
 375                         be16_to_cpu(x_sys->controller_function));
 376         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sector: %x\n",
 377                         be16_to_cpu(x_sys->start_sector));
 378         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "unit size: %x\n",
 379                         be16_to_cpu(x_sys->unit_size));
 380         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "sub class: %x\n",
 381                         x_sys->ms_sub_class);
 382         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "interface type: %x\n",
 383                         x_sys->interface_type);
 384         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "controller code: %x\n",
 385                         be16_to_cpu(x_sys->controller_code));
 386         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "format type: %x\n",
 387                         x_sys->format_type);
 388         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "device type: %x\n",
 389                         x_sys->device_type);
 390         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "mspro id: %s\n",
 391                         x_sys->mspro_id);
 392         return rc;
 393 }
 394
 395 static ssize_t mspro_block_attr_show_modelname(struct device *dev,
 396                                                struct device_attribute *attr,
 397                                                char *buffer)
 398 {
 399         struct mspro_sys_attr *s_attr = container_of(attr,
 400                                                      struct mspro_sys_attr,
 401                                                      dev_attr);
 402
 403         return scnprintf(buffer, PAGE_SIZE, "%s", (char *)s_attr->data);
 404 }
 405
 406 static ssize_t mspro_block_attr_show_mbr(struct device *dev,
 407                                          struct device_attribute *attr,
 408                                          char *buffer)
 409 {
 410         struct mspro_sys_attr *x_attr = container_of(attr,
 411                                                      struct mspro_sys_attr,
 412                                                      dev_attr);
 413         struct mspro_mbr *x_mbr = x_attr->data;
 414         ssize_t rc = 0;
 415
 416         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "boot partition: %x\n",
 417                         x_mbr->boot_partition);
 418         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start head: %x\n",
 419                         x_mbr->start_head);
 420         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sector: %x\n",
 421                         x_mbr->start_sector);
 422         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start cylinder: %x\n",
 423                         x_mbr->start_cylinder);
 424         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "partition type: %x\n",
 425                         x_mbr->partition_type);
 426         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end head: %x\n",
 427                         x_mbr->end_head);
 428         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end sector: %x\n",
 429                         x_mbr->end_sector);
 430         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end cylinder: %x\n",
 431                         x_mbr->end_cylinder);
 432         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sectors: %x\n",
 433                         x_mbr->start_sectors);
 434         rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
 435                         "sectors per partition: %x\n",
 436                         x_mbr->sectors_per_partition);
 437         return rc;
 438 }
 439
 440 static ssize_t mspro_block_attr_show_specfile(struct device *dev,
 441                                               struct device_attribute *attr,
 442                                               char *buffer)
 443 {
 444         struct mspro_sys_attr *x_attr = container_of(attr,
 445                                                      struct mspro_sys_attr,
 446                                                      dev_attr);
 447         struct mspro_specfile *x_spfile = x_attr->data;
 448         char name[9], ext[4];
 449         ssize_t rc = 0;
 450
 451         memcpy(name, x_spfile->name, 8);
 452         name[8] = 0;
 453         memcpy(ext, x_spfile->ext, 3);
 454         ext[3] = 0;
 455
 456         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "name: %s\n", name);
 457         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "ext: %s\n", ext);
 458         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "attribute: %x\n",
 459                         x_spfile->attr);
 460         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "time: %d:%d:%d\n",
 461                         x_spfile->time >> 11,
 462                         (x_spfile->time >> 5) & 0x3f,
 463                         (x_spfile->time & 0x1f) * 2);
 464         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "date: %d-%d-%d\n",
 465                         (x_spfile->date >> 9) + 1980,
 466                         (x_spfile->date >> 5) & 0xf,
 467                         x_spfile->date & 0x1f);
 468         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start cluster: %x\n",
 469                         x_spfile->cluster);
 470         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "size: %x\n",
 471                         x_spfile->size);
 472         return rc;
 473 }
 474
 475 static ssize_t mspro_block_attr_show_devinfo(struct device *dev,
 476                                              struct device_attribute *attr,
 477                                              char *buffer)
 478 {
 479         struct mspro_sys_attr *x_attr = container_of(attr,
 480                                                      struct mspro_sys_attr,
 481                                                      dev_attr);
 482         struct mspro_devinfo *x_devinfo = x_attr->data;
 483         ssize_t rc = 0;
 484
 485         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "cylinders: %x\n",
 486                         be16_to_cpu(x_devinfo->cylinders));
 487         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "heads: %x\n",
 488                         be16_to_cpu(x_devinfo->heads));
 489         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "bytes per track: %x\n",
 490                         be16_to_cpu(x_devinfo->bytes_per_track));
 491         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "bytes per sector: %x\n",
 492                         be16_to_cpu(x_devinfo->bytes_per_sector));
 493         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "sectors per track: %x\n",
 494                         be16_to_cpu(x_devinfo->sectors_per_track));
 495         return rc;
 496 }
 497
 498 static sysfs_show_t mspro_block_attr_show(unsigned char tag)
 499 {
 500         switch (tag) {
 501         case MSPRO_BLOCK_ID_SYSINFO:
 502                 return mspro_block_attr_show_sysinfo;
 503         case MSPRO_BLOCK_ID_MODELNAME:
 504                 return mspro_block_attr_show_modelname;
 505         case MSPRO_BLOCK_ID_MBR:
 506                 return mspro_block_attr_show_mbr;
 507         case MSPRO_BLOCK_ID_SPECFILEVALUES1:
 508         case MSPRO_BLOCK_ID_SPECFILEVALUES2:
 509                 return mspro_block_attr_show_specfile;
 510         case MSPRO_BLOCK_ID_DEVINFO:
 511                 return mspro_block_attr_show_devinfo;
 512         default:
 513                 return mspro_block_attr_show_default;
 514         }
 515 }
 516
 517 /*** Protocol handlers ***/
 518
 519 /*
 520  * Functions prefixed with "h_" are protocol callbacks. They can be called from
 521  * interrupt context. Return value of 0 means that request processing is still
 522  * ongoing, while special error value of -EAGAIN means that current request is
 523  * finished (and request processor should come back some time later).
 524  */
 525
 526 static int h_mspro_block_req_init(struct memstick_dev *card,
 527                                   struct memstick_request **mrq)
 528 {
 529         struct mspro_block_data *msb = memstick_get_drvdata(card);
 530
 531         *mrq = &card->current_mrq;
 532         card->next_request = msb->mrq_handler;
 533         return 0;
 534 }
 535
 536 static int h_mspro_block_default(struct memstick_dev *card,
 537                                  struct memstick_request **mrq)
 538 {
 539         return mspro_block_complete_req(card, (*mrq)->error);
 540 }
 541
 542 static int h_mspro_block_default_bad(struct memstick_dev *card,
 543                                      struct memstick_request **mrq)
 544 {
 545         return -ENXIO;
 546 }
 547
 548 static int h_mspro_block_get_ro(struct memstick_dev *card,
 549                                 struct memstick_request **mrq)
 550 {
 551         struct mspro_block_data *msb = memstick_get_drvdata(card);
 552
 553         if (!(*mrq)->error) {
 554                 if ((*mrq)->data[offsetof(struct ms_status_register, status0)]
 555                     & MEMSTICK_STATUS0_WP)
 556                         msb->read_only = 1;
 557                 else
 558                         msb->read_only = 0;
 559         }
 560
 561         return mspro_block_complete_req(card, (*mrq)->error);
 562 }
 563
 564 static int h_mspro_block_wait_for_ced(struct memstick_dev *card,
 565                                       struct memstick_request **mrq)
 566 {
 567         dev_dbg(&card->dev, "wait for ced: value %x\n", (*mrq)->data[0]);
 568
 569         if (!(*mrq)->error) {
 570                 if ((*mrq)->data[0] & (MEMSTICK_INT_CMDNAK | MEMSTICK_INT_ERR))
 571                         (*mrq)->error = -EFAULT;
 572                 else if (!((*mrq)->data[0] & MEMSTICK_INT_CED))
 573                         return 0;
 574         }
 575
 576         return mspro_block_complete_req(card, (*mrq)->error);
 577 }
 578
 579 static int h_mspro_block_transfer_data(struct memstick_dev *card,
 580                                        struct memstick_request **mrq)
 581 {
 582         struct mspro_block_data *msb = memstick_get_drvdata(card);
 583         unsigned char t_val = 0;
 584         struct scatterlist t_sg = { 0 };
 585         size_t t_offset;
 586
 587         if ((*mrq)->error)
 588                 return mspro_block_complete_req(card, (*mrq)->error);
 589
 590         switch ((*mrq)->tpc) {
 591         case MS_TPC_WRITE_REG:
 592                 memstick_init_req(*mrq, MS_TPC_SET_CMD, &msb->transfer_cmd, 1);
 593                 (*mrq)->need_card_int = 1;
 594                 return 0;
 595         case MS_TPC_SET_CMD:
 596                 t_val = (*mrq)->int_reg;
 597                 memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
 598                 if (msb->caps & MEMSTICK_CAP_AUTO_GET_INT)
 599                         goto has_int_reg;
 600                 return 0;
 601         case MS_TPC_GET_INT:
 602                 t_val = (*mrq)->data[0];
 603 has_int_reg:
 604                 if (t_val & (MEMSTICK_INT_CMDNAK | MEMSTICK_INT_ERR)) {
 605                         t_val = MSPRO_CMD_STOP;
 606                         memstick_init_req(*mrq, MS_TPC_SET_CMD, &t_val, 1);
 607                         card->next_request = h_mspro_block_default;
 608                         return 0;
 609                 }
 610
 611                 if (msb->current_page
 612                     == (msb->req_sg[msb->current_seg].length
 613                         / msb->page_size)) {
 614                         msb->current_page = 0;
 615                         msb->current_seg++;
 616
 617                         if (msb->current_seg == msb->seg_count) {
 618                                 if (t_val & MEMSTICK_INT_CED) {
 619                                         return mspro_block_complete_req(card,
 620                                                                         0);
 621                                 } else {
 622                                         card->next_request
 623                                                 = h_mspro_block_wait_for_ced;
 624                                         memstick_init_req(*mrq, MS_TPC_GET_INT,
 625                                                           NULL, 1);
 626                                         return 0;
 627                                 }
 628                         }
 629                 }
 630
 631                 if (!(t_val & MEMSTICK_INT_BREQ)) {
 632                         memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
 633                         return 0;
 634                 }
 635
 636                 t_offset = msb->req_sg[msb->current_seg].offset;
 637                 t_offset += msb->current_page * msb->page_size;
 638
 639                 sg_set_page(&t_sg,
 640                             nth_page(sg_page(&(msb->req_sg[msb->current_seg])),
 641                                      t_offset >> PAGE_SHIFT),
 642                             msb->page_size, offset_in_page(t_offset));
 643
 644                 memstick_init_req_sg(*mrq, msb->data_dir == READ
 645                                            ? MS_TPC_READ_LONG_DATA
 646                                            : MS_TPC_WRITE_LONG_DATA,
 647                                      &t_sg);
 648                 (*mrq)->need_card_int = 1;
 649                 return 0;
 650         case MS_TPC_READ_LONG_DATA:
 651         case MS_TPC_WRITE_LONG_DATA:
 652                 msb->current_page++;
 653                 if (msb->caps & MEMSTICK_CAP_AUTO_GET_INT) {
 654                         t_val = (*mrq)->int_reg;
 655                         goto has_int_reg;
 656                 } else {
 657                         memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
 658                         return 0;
 659                 }
 660
 661         default:
 662                 BUG();
 663         }
 664 }
 665
 666 /*** Data transfer ***/
 667
 668 static int mspro_block_issue_req(struct memstick_dev *card, int chunk)
 669 {
 670         struct mspro_block_data *msb = memstick_get_drvdata(card);
 671         sector_t t_sec;
 672         unsigned int count;
 673         struct mspro_param_register param;
 674
 675 try_again:
 676         while (chunk) {
 677                 msb->current_page = 0;
 678                 msb->current_seg = 0;
 679                 msb->seg_count = blk_rq_map_sg(msb->block_req->q,
 680                                                msb->block_req,
 681                                                msb->req_sg);
 682
 683                 if (!msb->seg_count) {
 684                         chunk = __blk_end_request_cur(msb->block_req, -ENOMEM);
 685                         continue;
 686                 }
 687
 688                 t_sec = blk_rq_pos(msb->block_req) << 9;
 689                 sector_div(t_sec, msb->page_size);
 690
 691                 count = blk_rq_bytes(msb->block_req);
 692                 count /= msb->page_size;
 693
 694                 param.system = msb->system;
 695                 param.data_count = cpu_to_be16(count);
 696                 param.data_address = cpu_to_be32((uint32_t)t_sec);
 697                 param.tpc_param = 0;
 698
 699                 msb->data_dir = rq_data_dir(msb->block_req);
 700                 msb->transfer_cmd = msb->data_dir == READ
 701                                     ? MSPRO_CMD_READ_DATA
 702                                     : MSPRO_CMD_WRITE_DATA;
 703
 704                 dev_dbg(&card->dev, "data transfer: cmd %x, "
 705                         "lba %x, count %x\n", msb->transfer_cmd,
 706                         be32_to_cpu(param.data_address), count);
 707
 708                 card->next_request = h_mspro_block_req_init;
 709                 msb->mrq_handler = h_mspro_block_transfer_data;
 710                 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG,
 711                                   &param, sizeof(param));
 712                 memstick_new_req(card->host);
 713                 return 0;
 714         }
 715
 716         dev_dbg(&card->dev, "blk_fetch\n");
 717         msb->block_req = blk_fetch_request(msb->queue);
 718         if (!msb->block_req) {
 719                 dev_dbg(&card->dev, "issue end\n");
 720                 return -EAGAIN;
 721         }
 722
 723         dev_dbg(&card->dev, "trying again\n");
 724         chunk = 1;
 725         goto try_again;
 726 }
 727
 728 static int mspro_block_complete_req(struct memstick_dev *card, int error)
 729 {
 730         struct mspro_block_data *msb = memstick_get_drvdata(card);
 731         int chunk, cnt;
 732         unsigned int t_len = 0;
 733         unsigned long flags;
 734
 735         spin_lock_irqsave(&msb->q_lock, flags);
 736         dev_dbg(&card->dev, "complete %d, %d\n", msb->has_request ? 1 : 0,
 737                 error);
 738
 739         if (msb->has_request) {
 740                 /* Nothing to do - not really an error */
 741                 if (error == -EAGAIN)
 742                         error = 0;
 743
 744                 if (error || (card->current_mrq.tpc == MSPRO_CMD_STOP)) {
 745                         if (msb->data_dir == READ) {
 746                                 for (cnt = 0; cnt < msb->current_seg; cnt++)
 747                                         t_len += msb->req_sg[cnt].length
 748                                                  / msb->page_size;
 749
 750                                         if (msb->current_page)
 751                                                 t_len += msb->current_page - 1;
 752
 753                                         t_len *= msb->page_size;
 754                         }
 755                 } else
 756                         t_len = blk_rq_bytes(msb->block_req);
 757
 758                 dev_dbg(&card->dev, "transferred %x (%d)\n", t_len, error);
 759
 760                 if (error && !t_len)
 761                         t_len = blk_rq_cur_bytes(msb->block_req);
 762
 763                 chunk = __blk_end_request(msb->block_req, error, t_len);
 764
 765                 error = mspro_block_issue_req(card, chunk);
 766
 767                 if (!error)
 768                         goto out;
 769                 else
 770                         msb->has_request = 0;
 771         } else {
 772                 if (!error)
 773                         error = -EAGAIN;
 774         }
 775
 776         card->next_request = h_mspro_block_default_bad;
 777         complete_all(&card->mrq_complete);
 778 out:
 779         spin_unlock_irqrestore(&msb->q_lock, flags);
 780         return error;
 781 }
 782
 783 static void mspro_block_stop(struct memstick_dev *card)
 784 {
 785         struct mspro_block_data *msb = memstick_get_drvdata(card);
 786         int rc = 0;
 787         unsigned long flags;
 788
 789         while (1) {
 790                 spin_lock_irqsave(&msb->q_lock, flags);
 791                 if (!msb->has_request) {
 792                         blk_stop_queue(msb->queue);
 793                         rc = 1;
 794                 }
 795                 spin_unlock_irqrestore(&msb->q_lock, flags);
 796
 797                 if (rc)
 798                         break;
 799
 800                 wait_for_completion(&card->mrq_complete);
 801         }
 802 }
 803
 804 static void mspro_block_start(struct memstick_dev *card)
 805 {
 806         struct mspro_block_data *msb = memstick_get_drvdata(card);
 807         unsigned long flags;
 808
 809         spin_lock_irqsave(&msb->q_lock, flags);
 810         blk_start_queue(msb->queue);
 811         spin_unlock_irqrestore(&msb->q_lock, flags);
 812 }
 813
 814 static int mspro_block_prepare_req(struct request_queue *q, struct request *req)
 815 {
 816         if (req->cmd_type != REQ_TYPE_FS &&
 817             req->cmd_type != REQ_TYPE_BLOCK_PC) {
 818                 blk_dump_rq_flags(req, "MSPro unsupported request");
 819                 return BLKPREP_KILL;
 820         }
 821
 822         req->cmd_flags |= REQ_DONTPREP;
 823
 824         return BLKPREP_OK;
 825 }
 826
 827 static void mspro_block_submit_req(struct request_queue *q)
 828 {
 829         struct memstick_dev *card = q->queuedata;
 830         struct mspro_block_data *msb = memstick_get_drvdata(card);
 831         struct request *req = NULL;
 832
 833         if (msb->has_request)
 834                 return;
 835
 836         if (msb->eject) {
 837                 while ((req = blk_fetch_request(q)) != NULL)
 838                         __blk_end_request_all(req, -ENODEV);
 839
 840                 return;
 841         }
 842
 843         msb->has_request = 1;
 844         if (mspro_block_issue_req(card, 0))
 845                 msb->has_request = 0;
 846 }
 847
 848 /*** Initialization ***/
 849
 850 static int mspro_block_wait_for_ced(struct memstick_dev *card)
 851 {
 852         struct mspro_block_data *msb = memstick_get_drvdata(card);
 853
 854         card->next_request = h_mspro_block_req_init;
 855         msb->mrq_handler = h_mspro_block_wait_for_ced;
 856         memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1);
 857         memstick_new_req(card->host);
 858         wait_for_completion(&card->mrq_complete);
 859         return card->current_mrq.error;
 860 }
 861
 862 static int mspro_block_set_interface(struct memstick_dev *card,
 863                                      unsigned char sys_reg)
 864 {
 865         struct memstick_host *host = card->host;
 866         struct mspro_block_data *msb = memstick_get_drvdata(card);
 867         struct mspro_param_register param = {
 868                 .system = sys_reg,
 869                 .data_count = 0,
 870                 .data_address = 0,
 871                 .tpc_param = 0
 872         };
 873
 874         card->next_request = h_mspro_block_req_init;
 875         msb->mrq_handler = h_mspro_block_default;
 876         memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, &param,
 877                           sizeof(param));
 878         memstick_new_req(host);
 879         wait_for_completion(&card->mrq_complete);
 880         return card->current_mrq.error;
 881 }
 882
 883 static int mspro_block_switch_interface(struct memstick_dev *card)
 884 {
 885         struct memstick_host *host = card->host;
 886         struct mspro_block_data *msb = memstick_get_drvdata(card);
 887         int rc = 0;
 888
 889 try_again:
 890         if (msb->caps & MEMSTICK_CAP_PAR4)
 891                 rc = mspro_block_set_interface(card, MEMSTICK_SYS_PAR4);
 892         else
 893                 return 0;
 894
 895         if (rc) {
 896                 printk(KERN_WARNING
 897                        "%s: could not switch to 4-bit mode, error %d\n",
 898                        dev_name(&card->dev), rc);
 899                 return 0;
 900         }
 901
 902         msb->system = MEMSTICK_SYS_PAR4;
 903         host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_PAR4);
 904         printk(KERN_INFO "%s: switching to 4-bit parallel mode\n",
 905                dev_name(&card->dev));
 906
 907         if (msb->caps & MEMSTICK_CAP_PAR8) {
 908                 rc = mspro_block_set_interface(card, MEMSTICK_SYS_PAR8);
 909
 910                 if (!rc) {
 911                         msb->system = MEMSTICK_SYS_PAR8;
 912                         host->set_param(host, MEMSTICK_INTERFACE,
 913                                         MEMSTICK_PAR8);
 914                         printk(KERN_INFO
 915                                "%s: switching to 8-bit parallel mode\n",
 916                                dev_name(&card->dev));
 917                 } else
 918                         printk(KERN_WARNING
 919                                "%s: could not switch to 8-bit mode, error %d\n",
 920                                dev_name(&card->dev), rc);
 921         }
 922
 923         card->next_request = h_mspro_block_req_init;
 924         msb->mrq_handler = h_mspro_block_default;
 925         memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1);
 926         memstick_new_req(card->host);
 927         wait_for_completion(&card->mrq_complete);
 928         rc = card->current_mrq.error;
 929
 930         if (rc) {
 931                 printk(KERN_WARNING
 932                        "%s: interface error, trying to fall back to serial\n",
 933                        dev_name(&card->dev));
 934                 msb->system = MEMSTICK_SYS_SERIAL;
 935                 host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_OFF);
 936                 msleep(10);
 937                 host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_ON);
 938                 host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_SERIAL);
 939
 940                 rc = memstick_set_rw_addr(card);
 941                 if (!rc)
 942                         rc = mspro_block_set_interface(card, msb->system);
 943
 944                 if (!rc) {
 945                         msleep(150);
 946                         rc = mspro_block_wait_for_ced(card);
 947                         if (rc)
 948                                 return rc;
 949
 950                         if (msb->caps & MEMSTICK_CAP_PAR8) {
 951                                 msb->caps &= ~MEMSTICK_CAP_PAR8;
 952                                 goto try_again;
 953                         }
 954                 }
 955         }
 956         return rc;
 957 }
 958
 959 /* Memory allocated for attributes by this function should be freed by
 960  * mspro_block_data_clear, no matter if the initialization process succeded
 961  * or failed.
 962  */
 963 static int mspro_block_read_attributes(struct memstick_dev *card)
 964 {
 965         struct mspro_block_data *msb = memstick_get_drvdata(card);
 966         struct mspro_param_register param = {
 967                 .system = msb->system,
 968                 .data_count = cpu_to_be16(1),
 969                 .data_address = 0,
 970                 .tpc_param = 0
 971         };
 972         struct mspro_attribute *attr = NULL;
 973         struct mspro_sys_attr *s_attr = NULL;
 974         unsigned char *buffer = NULL;
 975         int cnt, rc, attr_count;
 976         unsigned int addr;
 977         unsigned short page_count;
 978
 979         attr = kmalloc(msb->page_size, GFP_KERNEL);
 980         if (!attr)
 981                 return -ENOMEM;
 982
 983         sg_init_one(&msb->req_sg[0], attr, msb->page_size);
 984         msb->seg_count = 1;
 985         msb->current_seg = 0;
 986         msb->current_page = 0;
 987         msb->data_dir = READ;
 988         msb->transfer_cmd = MSPRO_CMD_READ_ATRB;
 989
 990         card->next_request = h_mspro_block_req_init;
 991         msb->mrq_handler = h_mspro_block_transfer_data;
 992         memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, &param,
 993                           sizeof(param));
 994         memstick_new_req(card->host);
 995         wait_for_completion(&card->mrq_complete);
 996         if (card->current_mrq.error) {
 997                 rc = card->current_mrq.error;
 998                 goto out_free_attr;
 999         }
1000
1001         if (be16_to_cpu(attr->signature) != MSPRO_BLOCK_SIGNATURE) {
1002                 printk(KERN_ERR "%s: unrecognized device signature %x\n",
1003                        dev_name(&card->dev), be16_to_cpu(attr->signature));
1004                 rc = -ENODEV;
1005                 goto out_free_attr;
1006         }
1007
1008         if (attr->count > MSPRO_BLOCK_MAX_ATTRIBUTES) {
1009                 printk(KERN_WARNING "%s: way too many attribute entries\n",
1010                        dev_name(&card->dev));
1011                 attr_count = MSPRO_BLOCK_MAX_ATTRIBUTES;
1012         } else
1013                 attr_count = attr->count;
1014
1015         msb->attr_group.attrs = kzalloc((attr_count + 1)
1016                                         * sizeof(struct attribute),
1017                                         GFP_KERNEL);
1018         if (!msb->attr_group.attrs) {
1019                 rc = -ENOMEM;
1020                 goto out_free_attr;
1021         }
1022         msb->attr_group.name = "media_attributes";
1023
1024         buffer = kmalloc(msb->page_size, GFP_KERNEL);
1025         if (!buffer) {
1026                 rc = -ENOMEM;
1027                 goto out_free_attr;
1028         }
1029         memcpy(buffer, (char *)attr, msb->page_size);
1030         page_count = 1;
1031
1032         for (cnt = 0; cnt < attr_count; ++cnt) {
1033                 s_attr = kzalloc(sizeof(struct mspro_sys_attr), GFP_KERNEL);
1034                 if (!s_attr) {
1035                         rc = -ENOMEM;
1036                         goto out_free_buffer;
1037                 }
1038
1039                 msb->attr_group.attrs[cnt] = &s_attr->dev_attr.attr;
1040                 addr = be32_to_cpu(attr->entries[cnt].address);
1041                 rc = be32_to_cpu(attr->entries[cnt].size);
1042                 dev_dbg(&card->dev, "adding attribute %d: id %x, address %x, "
1043                         "size %x\n", cnt, attr->entries[cnt].id, addr, rc);
1044                 s_attr->id = attr->entries[cnt].id;
1045                 if (mspro_block_attr_name(s_attr->id))
1046                         snprintf(s_attr->name, sizeof(s_attr->name), "%s",
1047                                  mspro_block_attr_name(attr->entries[cnt].id));
1048                 else
1049                         snprintf(s_attr->name, sizeof(s_attr->name),
1050                                  "attr_x%02x", attr->entries[cnt].id);
1051
1052                 sysfs_attr_init(&s_attr->dev_attr.attr);
1053                 s_attr->dev_attr.attr.name = s_attr->name;
1054                 s_attr->dev_attr.attr.mode = S_IRUGO;
1055                 s_attr->dev_attr.show = mspro_block_attr_show(s_attr->id);
1056
1057                 if (!rc)
1058                         continue;
1059
1060                 s_attr->size = rc;
1061                 s_attr->data = kmalloc(rc, GFP_KERNEL);
1062                 if (!s_attr->data) {
1063                         rc = -ENOMEM;
1064                         goto out_free_buffer;
1065                 }
1066
1067                 if (((addr / msb->page_size)
1068                      == be32_to_cpu(param.data_address))
1069                     && (((addr + rc - 1) / msb->page_size)
1070                         == be32_to_cpu(param.data_address))) {
1071                         memcpy(s_attr->data, buffer + addr % msb->page_size,
1072                                rc);
1073                         continue;
1074                 }
1075
1076                 if (page_count <= (rc / msb->page_size)) {
1077                         kfree(buffer);
1078                         page_count = (rc / msb->page_size) + 1;
1079                         buffer = kmalloc(page_count * msb->page_size,
1080                                          GFP_KERNEL);
1081                         if (!buffer) {
1082                                 rc = -ENOMEM;
1083                                 goto out_free_attr;
1084                         }
1085                 }
1086
1087                 param.system = msb->system;
1088                 param.data_count = cpu_to_be16((rc / msb->page_size) + 1);
1089                 param.data_address = cpu_to_be32(addr / msb->page_size);
1090                 param.tpc_param = 0;
1091
1092                 sg_init_one(&msb->req_sg[0], buffer,
1093                             be16_to_cpu(param.data_count) * msb->page_size);
1094                 msb->seg_count = 1;
1095                 msb->current_seg = 0;
1096                 msb->current_page = 0;
1097                 msb->data_dir = READ;
1098                 msb->transfer_cmd = MSPRO_CMD_READ_ATRB;
1099
1100                 dev_dbg(&card->dev, "reading attribute pages %x, %x\n",
1101                         be32_to_cpu(param.data_address),
1102                         be16_to_cpu(param.data_count));
1103
1104                 card->next_request = h_mspro_block_req_init;
1105                 msb->mrq_handler = h_mspro_block_transfer_data;
1106                 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG,
1107                                   (char *)&param, sizeof(param));
1108                 memstick_new_req(card->host);
1109                 wait_for_completion(&card->mrq_complete);
1110                 if (card->current_mrq.error) {
1111                         rc = card->current_mrq.error;
1112                         goto out_free_buffer;
1113                 }
1114
1115                 memcpy(s_attr->data, buffer + addr % msb->page_size, rc);
1116         }
1117
1118         rc = 0;
1119 out_free_buffer:
1120         kfree(buffer);
1121 out_free_attr:
1122         kfree(attr);
1123         return rc;
1124 }
1125
1126 static int mspro_block_init_card(struct memstick_dev *card)
1127 {
1128         struct mspro_block_data *msb = memstick_get_drvdata(card);
1129         struct memstick_host *host = card->host;
1130         int rc = 0;
1131
1132         msb->system = MEMSTICK_SYS_SERIAL;
1133         card->reg_addr.r_offset = offsetof(struct mspro_register, status);
1134         card->reg_addr.r_length = sizeof(struct ms_status_register);
1135         card->reg_addr.w_offset = offsetof(struct mspro_register, param);
1136         card->reg_addr.w_length = sizeof(struct mspro_param_register);
1137
1138         if (memstick_set_rw_addr(card))
1139                 return -EIO;
1140
1141         msb->caps = host->caps;
1142
1143         msleep(150);
1144         rc = mspro_block_wait_for_ced(card);
1145         if (rc)
1146                 return rc;
1147
1148         rc = mspro_block_switch_interface(card);
1149         if (rc)
1150                 return rc;
1151
1152         dev_dbg(&card->dev, "card activated\n");
1153         if (msb->system != MEMSTICK_SYS_SERIAL)
1154                 msb->caps |= MEMSTICK_CAP_AUTO_GET_INT;
1155
1156         card->next_request = h_mspro_block_req_init;
1157         msb->mrq_handler = h_mspro_block_get_ro;
1158         memstick_init_req(&card->current_mrq, MS_TPC_READ_REG, NULL,
1159                           sizeof(struct ms_status_register));
1160         memstick_new_req(card->host);
1161         wait_for_completion(&card->mrq_complete);
1162         if (card->current_mrq.error)
1163                 return card->current_mrq.error;
1164
1165         dev_dbg(&card->dev, "card r/w status %d\n", msb->read_only ? 0 : 1);
1166
1167         msb->page_size = 512;
1168         rc = mspro_block_read_attributes(card);
1169         if (rc)
1170                 return rc;
1171
1172         dev_dbg(&card->dev, "attributes loaded\n");
1173         return 0;
1174
1175 }
1176
1177 static int mspro_block_init_disk(struct memstick_dev *card)
1178 {
1179         struct mspro_block_data *msb = memstick_get_drvdata(card);
1180         struct memstick_host *host = card->host;
1181         struct mspro_devinfo *dev_info = NULL;
1182         struct mspro_sys_info *sys_info = NULL;
1183         struct mspro_sys_attr *s_attr = NULL;
1184         int rc, disk_id;
1185         u64 limit = BLK_BOUNCE_HIGH;
1186         unsigned long capacity;
1187
1188         if (host->dev.dma_mask && *(host->dev.dma_mask))
1189                 limit = *(host->dev.dma_mask);
1190
1191         for (rc = 0; msb->attr_group.attrs[rc]; ++rc) {
1192                 s_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[rc]);
1193
1194                 if (s_attr->id == MSPRO_BLOCK_ID_DEVINFO)
1195                         dev_info = s_attr->data;
1196                 else if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO)
1197                         sys_info = s_attr->data;
1198         }
1199
1200         if (!dev_info || !sys_info)
1201                 return -ENODEV;
1202
1203         msb->cylinders = be16_to_cpu(dev_info->cylinders);
1204         msb->heads = be16_to_cpu(dev_info->heads);
1205         msb->sectors_per_track = be16_to_cpu(dev_info->sectors_per_track);
1206
1207         msb->page_size = be16_to_cpu(sys_info->unit_size);
1208
1209         if (!idr_pre_get(&mspro_block_disk_idr, GFP_KERNEL))
1210                 return -ENOMEM;
1211
1212         mutex_lock(&mspro_block_disk_lock);
1213         rc = idr_get_new(&mspro_block_disk_idr, card, &disk_id);
1214         mutex_unlock(&mspro_block_disk_lock);
1215
1216         if (rc)
1217                 return rc;
1218
1219         if ((disk_id << MSPRO_BLOCK_PART_SHIFT) > 255) {
1220                 rc = -ENOSPC;
1221                 goto out_release_id;
1222         }
1223
1224         msb->disk = alloc_disk(1 << MSPRO_BLOCK_PART_SHIFT);
1225         if (!msb->disk) {
1226                 rc = -ENOMEM;
1227                 goto out_release_id;
1228         }
1229
1230         msb->queue = blk_init_queue(mspro_block_submit_req, &msb->q_lock);
1231         if (!msb->queue) {
1232                 rc = -ENOMEM;
1233                 goto out_put_disk;
1234         }
1235
1236         msb->queue->queuedata = card;
1237         blk_queue_prep_rq(msb->queue, mspro_block_prepare_req);
1238
1239         blk_queue_bounce_limit(msb->queue, limit);
1240         blk_queue_max_hw_sectors(msb->queue, MSPRO_BLOCK_MAX_PAGES);
1241         blk_queue_max_segments(msb->queue, MSPRO_BLOCK_MAX_SEGS);
1242         blk_queue_max_segment_size(msb->queue,
1243                                    MSPRO_BLOCK_MAX_PAGES * msb->page_size);
1244
1245         msb->disk->major = major;
1246         msb->disk->first_minor = disk_id << MSPRO_BLOCK_PART_SHIFT;
1247         msb->disk->fops = &ms_block_bdops;
1248         msb->usage_count = 1;
1249         msb->disk->private_data = msb;
1250         msb->disk->queue = msb->queue;
1251         msb->disk->driverfs_dev = &card->dev;
1252
1253         sprintf(msb->disk->disk_name, "mspblk%d", disk_id);
1254
1255         blk_queue_logical_block_size(msb->queue, msb->page_size);
1256
1257         capacity = be16_to_cpu(sys_info->user_block_count);
1258         capacity *= be16_to_cpu(sys_info->block_size);
1259         capacity *= msb->page_size >> 9;
1260         set_capacity(msb->disk, capacity);
1261         dev_dbg(&card->dev, "capacity set %ld\n", capacity);
1262
1263         add_disk(msb->disk);
1264         msb->active = 1;
1265         return 0;
1266
1267 out_put_disk:
1268         put_disk(msb->disk);
1269 out_release_id:
1270         mutex_lock(&mspro_block_disk_lock);
1271         idr_remove(&mspro_block_disk_idr, disk_id);
1272         mutex_unlock(&mspro_block_disk_lock);
1273         return rc;
1274 }
1275
1276 static void mspro_block_data_clear(struct mspro_block_data *msb)
1277 {
1278         int cnt;
1279         struct mspro_sys_attr *s_attr;
1280
1281         if (msb->attr_group.attrs) {
1282                 for (cnt = 0; msb->attr_group.attrs[cnt]; ++cnt) {
1283                         s_attr = mspro_from_sysfs_attr(msb->attr_group
1284                                                            .attrs[cnt]);
1285                         kfree(s_attr->data);
1286                         kfree(s_attr);
1287                 }
1288                 kfree(msb->attr_group.attrs);
1289         }
1290
1291         msb->card = NULL;
1292 }
1293
1294 static int mspro_block_check_card(struct memstick_dev *card)
1295 {
1296         struct mspro_block_data *msb = memstick_get_drvdata(card);
1297
1298         return (msb->active == 1);
1299 }
1300
1301 static int mspro_block_probe(struct memstick_dev *card)
1302 {
1303         struct mspro_block_data *msb;
1304         int rc = 0;
1305
1306         msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL);
1307         if (!msb)
1308                 return -ENOMEM;
1309         memstick_set_drvdata(card, msb);
1310         msb->card = card;
1311         spin_lock_init(&msb->q_lock);
1312
1313         rc = mspro_block_init_card(card);
1314
1315         if (rc)
1316                 goto out_free;
1317
1318         rc = sysfs_create_group(&card->dev.kobj, &msb->attr_group);
1319         if (rc)
1320                 goto out_free;
1321
1322         rc = mspro_block_init_disk(card);
1323         if (!rc) {
1324                 card->check = mspro_block_check_card;
1325                 card->stop = mspro_block_stop;
1326                 card->start = mspro_block_start;
1327                 return 0;
1328         }
1329
1330         sysfs_remove_group(&card->dev.kobj, &msb->attr_group);
1331 out_free:
1332         memstick_set_drvdata(card, NULL);
1333         mspro_block_data_clear(msb);
1334         kfree(msb);
1335         return rc;
1336 }
1337
1338 static void mspro_block_remove(struct memstick_dev *card)
1339 {
1340         struct mspro_block_data *msb = memstick_get_drvdata(card);
1341         unsigned long flags;
1342
1343         spin_lock_irqsave(&msb->q_lock, flags);
1344         msb->eject = 1;
1345         blk_start_queue(msb->queue);
1346         spin_unlock_irqrestore(&msb->q_lock, flags);
1347
1348         del_gendisk(msb->disk);
1349         dev_dbg(&card->dev, "mspro block remove\n");
1350
1351         blk_cleanup_queue(msb->queue);
1352         msb->queue = NULL;
1353
1354         sysfs_remove_group(&card->dev.kobj, &msb->attr_group);
1355
1356         mutex_lock(&mspro_block_disk_lock);
1357         mspro_block_data_clear(msb);
1358         mutex_unlock(&mspro_block_disk_lock);
1359
1360         mspro_block_disk_release(msb->disk);
1361         memstick_set_drvdata(card, NULL);
1362 }
1363
1364 #ifdef CONFIG_PM
1365
1366 static int mspro_block_suspend(struct memstick_dev *card, pm_message_t state)
1367 {
1368         struct mspro_block_data *msb = memstick_get_drvdata(card);
1369         unsigned long flags;
1370
1371         spin_lock_irqsave(&msb->q_lock, flags);
1372         blk_stop_queue(msb->queue);
1373         msb->active = 0;
1374         spin_unlock_irqrestore(&msb->q_lock, flags);
1375
1376         return 0;
1377 }
1378
1379 static int mspro_block_resume(struct memstick_dev *card)
1380 {
1381         struct mspro_block_data *msb = memstick_get_drvdata(card);
1382         unsigned long flags;
1383         int rc = 0;
1384
1385 #ifdef CONFIG_MEMSTICK_UNSAFE_RESUME
1386
1387         struct mspro_block_data *new_msb;
1388         struct memstick_host *host = card->host;
1389         struct mspro_sys_attr *s_attr, *r_attr;
1390         unsigned char cnt;
1391
1392         mutex_lock(&host->lock);
1393         new_msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL);
1394         if (!new_msb) {
1395                 rc = -ENOMEM;
1396                 goto out_unlock;
1397         }
1398
1399         new_msb->card = card;
1400         memstick_set_drvdata(card, new_msb);
1401         if (mspro_block_init_card(card))
1402                 goto out_free;
1403
1404         for (cnt = 0; new_msb->attr_group.attrs[cnt]
1405                       && msb->attr_group.attrs[cnt]; ++cnt) {
1406                 s_attr = mspro_from_sysfs_attr(new_msb->attr_group.attrs[cnt]);
1407                 r_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[cnt]);
1408
1409                 if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO
1410                     && r_attr->id == s_attr->id) {
1411                         if (memcmp(s_attr->data, r_attr->data, s_attr->size))
1412                                 break;
1413
1414                         msb->active = 1;
1415                         break;
1416                 }
1417         }
1418
1419 out_free:
1420         memstick_set_drvdata(card, msb);
1421         mspro_block_data_clear(new_msb);
1422         kfree(new_msb);
1423 out_unlock:
1424         mutex_unlock(&host->lock);
1425
1426 #endif /* CONFIG_MEMSTICK_UNSAFE_RESUME */
1427
1428         spin_lock_irqsave(&msb->q_lock, flags);
1429         blk_start_queue(msb->queue);
1430         spin_unlock_irqrestore(&msb->q_lock, flags);
1431         return rc;
1432 }
1433
1434 #else
1435
1436 #define mspro_block_suspend NULL
1437 #define mspro_block_resume NULL
1438
1439 #endif /* CONFIG_PM */
1440
1441 static struct memstick_device_id mspro_block_id_tbl[] = {
1442         {MEMSTICK_MATCH_ALL, MEMSTICK_TYPE_PRO, MEMSTICK_CATEGORY_STORAGE_DUO,
1443          MEMSTICK_CLASS_DUO},
1444         {}
1445 };
1446
1447
1448 static struct memstick_driver mspro_block_driver = {
1449         .driver = {
1450                 .name  = DRIVER_NAME,
1451                 .owner = THIS_MODULE
1452         },
1453         .id_table = mspro_block_id_tbl,
1454         .probe    = mspro_block_probe,
1455         .remove   = mspro_block_remove,
1456         .suspend  = mspro_block_suspend,
1457         .resume   = mspro_block_resume
1458 };
1459
1460 static int __init mspro_block_init(void)
1461 {
1462         int rc = -ENOMEM;
1463
1464         rc = register_blkdev(major, DRIVER_NAME);
1465         if (rc < 0) {
1466                 printk(KERN_ERR DRIVER_NAME ": failed to register "
1467                        "major %d, error %d\n", major, rc);
1468                 return rc;
1469         }
1470         if (!major)
1471                 major = rc;
1472
1473         rc = memstick_register_driver(&mspro_block_driver);
1474         if (rc)
1475                 unregister_blkdev(major, DRIVER_NAME);
1476         return rc;
1477 }
1478
1479 static void __exit mspro_block_exit(void)
1480 {
1481         memstick_unregister_driver(&mspro_block_driver);
1482         unregister_blkdev(major, DRIVER_NAME);
1483         idr_destroy(&mspro_block_disk_idr);
1484 }
1485
1486 module_init(mspro_block_init);
1487 module_exit(mspro_block_exit);
1488
1489 MODULE_LICENSE("GPL");
1490 MODULE_AUTHOR("Alex Dubov");
1491 MODULE_DESCRIPTION("Sony MemoryStickPro block device driver");
1492 MODULE_DEVICE_TABLE(memstick, mspro_block_id_tbl);