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 #include <linux/module.h>
  24
  25 #define DRIVER_NAME "mspro_block"
  26
  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
 164         /* Default request setup function for data access method preferred by
 165          * this host instance.
 166          */
 167         void                  (*setup_transfer)(struct memstick_dev *card,
 168                                                 u64 offset, size_t length);
 169
 170         struct attribute_group attr_group;
 171
 172         struct scatterlist    req_sg[MSPRO_BLOCK_MAX_SEGS];
 173         unsigned int          seg_count;
 174         unsigned int          current_seg;
 175         unsigned int          current_page;
 176 };
 177
 178 static DEFINE_IDR(mspro_block_disk_idr);
 179 static DEFINE_MUTEX(mspro_block_disk_lock);
 180
 181 static int mspro_block_complete_req(struct memstick_dev *card, int error);
 182
 183 /*** Block device ***/
 184
 185 static int mspro_block_bd_open(struct block_device *bdev, fmode_t mode)
 186 {
 187         struct gendisk *disk = bdev->bd_disk;
 188         struct mspro_block_data *msb = disk->private_data;
 189         int rc = -ENXIO;
 190
 191         mutex_lock(&mspro_block_disk_lock);
 192
 193         if (msb && msb->card) {
 194                 msb->usage_count++;
 195                 if ((mode & FMODE_WRITE) && msb->read_only)
 196                         rc = -EROFS;
 197                 else
 198                         rc = 0;
 199         }
 200
 201         mutex_unlock(&mspro_block_disk_lock);
 202
 203         return rc;
 204 }
 205
 206
 207 static int mspro_block_disk_release(struct gendisk *disk)
 208 {
 209         struct mspro_block_data *msb = disk->private_data;
 210         int disk_id = MINOR(disk_devt(disk)) >> MSPRO_BLOCK_PART_SHIFT;
 211
 212         mutex_lock(&mspro_block_disk_lock);
 213
 214         if (msb) {
 215                 if (msb->usage_count)
 216                         msb->usage_count--;
 217
 218                 if (!msb->usage_count) {
 219                         kfree(msb);
 220                         disk->private_data = NULL;
 221                         idr_remove(&mspro_block_disk_idr, disk_id);
 222                         put_disk(disk);
 223                 }
 224         }
 225
 226         mutex_unlock(&mspro_block_disk_lock);
 227
 228         return 0;
 229 }
 230
 231 static int mspro_block_bd_release(struct gendisk *disk, fmode_t mode)
 232 {
 233         return mspro_block_disk_release(disk);
 234 }
 235
 236 static int mspro_block_bd_getgeo(struct block_device *bdev,
 237                                  struct hd_geometry *geo)
 238 {
 239         struct mspro_block_data *msb = bdev->bd_disk->private_data;
 240
 241         geo->heads = msb->heads;
 242         geo->sectors = msb->sectors_per_track;
 243         geo->cylinders = msb->cylinders;
 244
 245         return 0;
 246 }
 247
 248 static const struct block_device_operations ms_block_bdops = {
 249         .open    = mspro_block_bd_open,
 250         .release = mspro_block_bd_release,
 251         .getgeo  = mspro_block_bd_getgeo,
 252         .owner   = THIS_MODULE
 253 };
 254
 255 /*** Information ***/
 256
 257 static struct mspro_sys_attr *mspro_from_sysfs_attr(struct attribute *attr)
 258 {
 259         struct device_attribute *dev_attr
 260                 = container_of(attr, struct device_attribute, attr);
 261         return container_of(dev_attr, struct mspro_sys_attr, dev_attr);
 262 }
 263
 264 static const char *mspro_block_attr_name(unsigned char tag)
 265 {
 266         switch (tag) {
 267         case MSPRO_BLOCK_ID_SYSINFO:
 268                 return "attr_sysinfo";
 269         case MSPRO_BLOCK_ID_MODELNAME:
 270                 return "attr_modelname";
 271         case MSPRO_BLOCK_ID_MBR:
 272                 return "attr_mbr";
 273         case MSPRO_BLOCK_ID_PBR16:
 274                 return "attr_pbr16";
 275         case MSPRO_BLOCK_ID_PBR32:
 276                 return "attr_pbr32";
 277         case MSPRO_BLOCK_ID_SPECFILEVALUES1:
 278                 return "attr_specfilevalues1";
 279         case MSPRO_BLOCK_ID_SPECFILEVALUES2:
 280                 return "attr_specfilevalues2";
 281         case MSPRO_BLOCK_ID_DEVINFO:
 282                 return "attr_devinfo";
 283         default:
 284                 return NULL;
 285         };
 286 }
 287
 288 typedef ssize_t (*sysfs_show_t)(struct device *dev,
 289                                 struct device_attribute *attr,
 290                                 char *buffer);
 291
 292 static ssize_t mspro_block_attr_show_default(struct device *dev,
 293                                              struct device_attribute *attr,
 294                                              char *buffer)
 295 {
 296         struct mspro_sys_attr *s_attr = container_of(attr,
 297                                                      struct mspro_sys_attr,
 298                                                      dev_attr);
 299
 300         ssize_t cnt, rc = 0;
 301
 302         for (cnt = 0; cnt < s_attr->size; cnt++) {
 303                 if (cnt && !(cnt % 16)) {
 304                         if (PAGE_SIZE - rc)
 305                                 buffer[rc++] = '\n';
 306                 }
 307
 308                 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "%02x ",
 309                                 ((unsigned char *)s_attr->data)[cnt]);
 310         }
 311         return rc;
 312 }
 313
 314 static ssize_t mspro_block_attr_show_sysinfo(struct device *dev,
 315                                              struct device_attribute *attr,
 316                                              char *buffer)
 317 {
 318         struct mspro_sys_attr *x_attr = container_of(attr,
 319                                                      struct mspro_sys_attr,
 320                                                      dev_attr);
 321         struct mspro_sys_info *x_sys = x_attr->data;
 322         ssize_t rc = 0;
 323         int date_tz = 0, date_tz_f = 0;
 324
 325         if (x_sys->assembly_date[0] > 0x80U) {
 326                 date_tz = (~x_sys->assembly_date[0]) + 1;
 327                 date_tz_f = date_tz & 3;
 328                 date_tz >>= 2;
 329                 date_tz = -date_tz;
 330                 date_tz_f *= 15;
 331         } else if (x_sys->assembly_date[0] < 0x80U) {
 332                 date_tz = x_sys->assembly_date[0];
 333                 date_tz_f = date_tz & 3;
 334                 date_tz >>= 2;
 335                 date_tz_f *= 15;
 336         }
 337
 338         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "class: %x\n",
 339                         x_sys->class);
 340         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "block size: %x\n",
 341                         be16_to_cpu(x_sys->block_size));
 342         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "block count: %x\n",
 343                         be16_to_cpu(x_sys->block_count));
 344         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "user block count: %x\n",
 345                         be16_to_cpu(x_sys->user_block_count));
 346         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "page size: %x\n",
 347                         be16_to_cpu(x_sys->page_size));
 348         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "assembly date: "
 349                         "GMT%+d:%d %04u-%02u-%02u %02u:%02u:%02u\n",
 350                         date_tz, date_tz_f,
 351                         be16_to_cpup((__be16 *)&x_sys->assembly_date[1]),
 352                         x_sys->assembly_date[3], x_sys->assembly_date[4],
 353                         x_sys->assembly_date[5], x_sys->assembly_date[6],
 354                         x_sys->assembly_date[7]);
 355         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "serial number: %x\n",
 356                         be32_to_cpu(x_sys->serial_number));
 357         rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
 358                         "assembly maker code: %x\n",
 359                         x_sys->assembly_maker_code);
 360         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "assembly model code: "
 361                         "%02x%02x%02x\n", x_sys->assembly_model_code[0],
 362                         x_sys->assembly_model_code[1],
 363                         x_sys->assembly_model_code[2]);
 364         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "memory maker code: %x\n",
 365                         be16_to_cpu(x_sys->memory_maker_code));
 366         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "memory model code: %x\n",
 367                         be16_to_cpu(x_sys->memory_model_code));
 368         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "vcc: %x\n",
 369                         x_sys->vcc);
 370         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "vpp: %x\n",
 371                         x_sys->vpp);
 372         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "controller number: %x\n",
 373                         be16_to_cpu(x_sys->controller_number));
 374         rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
 375                         "controller function: %x\n",
 376                         be16_to_cpu(x_sys->controller_function));
 377         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sector: %x\n",
 378                         be16_to_cpu(x_sys->start_sector));
 379         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "unit size: %x\n",
 380                         be16_to_cpu(x_sys->unit_size));
 381         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "sub class: %x\n",
 382                         x_sys->ms_sub_class);
 383         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "interface type: %x\n",
 384                         x_sys->interface_type);
 385         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "controller code: %x\n",
 386                         be16_to_cpu(x_sys->controller_code));
 387         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "format type: %x\n",
 388                         x_sys->format_type);
 389         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "device type: %x\n",
 390                         x_sys->device_type);
 391         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "mspro id: %s\n",
 392                         x_sys->mspro_id);
 393         return rc;
 394 }
 395
 396 static ssize_t mspro_block_attr_show_modelname(struct device *dev,
 397                                                struct device_attribute *attr,
 398                                                char *buffer)
 399 {
 400         struct mspro_sys_attr *s_attr = container_of(attr,
 401                                                      struct mspro_sys_attr,
 402                                                      dev_attr);
 403
 404         return scnprintf(buffer, PAGE_SIZE, "%s", (char *)s_attr->data);
 405 }
 406
 407 static ssize_t mspro_block_attr_show_mbr(struct device *dev,
 408                                          struct device_attribute *attr,
 409                                          char *buffer)
 410 {
 411         struct mspro_sys_attr *x_attr = container_of(attr,
 412                                                      struct mspro_sys_attr,
 413                                                      dev_attr);
 414         struct mspro_mbr *x_mbr = x_attr->data;
 415         ssize_t rc = 0;
 416
 417         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "boot partition: %x\n",
 418                         x_mbr->boot_partition);
 419         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start head: %x\n",
 420                         x_mbr->start_head);
 421         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sector: %x\n",
 422                         x_mbr->start_sector);
 423         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start cylinder: %x\n",
 424                         x_mbr->start_cylinder);
 425         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "partition type: %x\n",
 426                         x_mbr->partition_type);
 427         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end head: %x\n",
 428                         x_mbr->end_head);
 429         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end sector: %x\n",
 430                         x_mbr->end_sector);
 431         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end cylinder: %x\n",
 432                         x_mbr->end_cylinder);
 433         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sectors: %x\n",
 434                         x_mbr->start_sectors);
 435         rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
 436                         "sectors per partition: %x\n",
 437                         x_mbr->sectors_per_partition);
 438         return rc;
 439 }
 440
 441 static ssize_t mspro_block_attr_show_specfile(struct device *dev,
 442                                               struct device_attribute *attr,
 443                                               char *buffer)
 444 {
 445         struct mspro_sys_attr *x_attr = container_of(attr,
 446                                                      struct mspro_sys_attr,
 447                                                      dev_attr);
 448         struct mspro_specfile *x_spfile = x_attr->data;
 449         char name[9], ext[4];
 450         ssize_t rc = 0;
 451
 452         memcpy(name, x_spfile->name, 8);
 453         name[8] = 0;
 454         memcpy(ext, x_spfile->ext, 3);
 455         ext[3] = 0;
 456
 457         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "name: %s\n", name);
 458         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "ext: %s\n", ext);
 459         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "attribute: %x\n",
 460                         x_spfile->attr);
 461         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "time: %d:%d:%d\n",
 462                         x_spfile->time >> 11,
 463                         (x_spfile->time >> 5) & 0x3f,
 464                         (x_spfile->time & 0x1f) * 2);
 465         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "date: %d-%d-%d\n",
 466                         (x_spfile->date >> 9) + 1980,
 467                         (x_spfile->date >> 5) & 0xf,
 468                         x_spfile->date & 0x1f);
 469         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start cluster: %x\n",
 470                         x_spfile->cluster);
 471         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "size: %x\n",
 472                         x_spfile->size);
 473         return rc;
 474 }
 475
 476 static ssize_t mspro_block_attr_show_devinfo(struct device *dev,
 477                                              struct device_attribute *attr,
 478                                              char *buffer)
 479 {
 480         struct mspro_sys_attr *x_attr = container_of(attr,
 481                                                      struct mspro_sys_attr,
 482                                                      dev_attr);
 483         struct mspro_devinfo *x_devinfo = x_attr->data;
 484         ssize_t rc = 0;
 485
 486         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "cylinders: %x\n",
 487                         be16_to_cpu(x_devinfo->cylinders));
 488         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "heads: %x\n",
 489                         be16_to_cpu(x_devinfo->heads));
 490         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "bytes per track: %x\n",
 491                         be16_to_cpu(x_devinfo->bytes_per_track));
 492         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "bytes per sector: %x\n",
 493                         be16_to_cpu(x_devinfo->bytes_per_sector));
 494         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "sectors per track: %x\n",
 495                         be16_to_cpu(x_devinfo->sectors_per_track));
 496         return rc;
 497 }
 498
 499 static sysfs_show_t mspro_block_attr_show(unsigned char tag)
 500 {
 501         switch (tag) {
 502         case MSPRO_BLOCK_ID_SYSINFO:
 503                 return mspro_block_attr_show_sysinfo;
 504         case MSPRO_BLOCK_ID_MODELNAME:
 505                 return mspro_block_attr_show_modelname;
 506         case MSPRO_BLOCK_ID_MBR:
 507                 return mspro_block_attr_show_mbr;
 508         case MSPRO_BLOCK_ID_SPECFILEVALUES1:
 509         case MSPRO_BLOCK_ID_SPECFILEVALUES2:
 510                 return mspro_block_attr_show_specfile;
 511         case MSPRO_BLOCK_ID_DEVINFO:
 512                 return mspro_block_attr_show_devinfo;
 513         default:
 514                 return mspro_block_attr_show_default;
 515         }
 516 }
 517
 518 /*** Protocol handlers ***/
 519
 520 /*
 521  * Functions prefixed with "h_" are protocol callbacks. They can be called from
 522  * interrupt context. Return value of 0 means that request processing is still
 523  * ongoing, while special error value of -EAGAIN means that current request is
 524  * finished (and request processor should come back some time later).
 525  */
 526
 527 static int h_mspro_block_req_init(struct memstick_dev *card,
 528                                   struct memstick_request **mrq)
 529 {
 530         struct mspro_block_data *msb = memstick_get_drvdata(card);
 531
 532         *mrq = &card->current_mrq;
 533         card->next_request = msb->mrq_handler;
 534         return 0;
 535 }
 536
 537 static int h_mspro_block_default(struct memstick_dev *card,
 538                                  struct memstick_request **mrq)
 539 {
 540         return mspro_block_complete_req(card, (*mrq)->error);
 541 }
 542
 543 static int h_mspro_block_default_bad(struct memstick_dev *card,
 544                                      struct memstick_request **mrq)
 545 {
 546         return -ENXIO;
 547 }
 548
 549 static int h_mspro_block_get_ro(struct memstick_dev *card,
 550                                 struct memstick_request **mrq)
 551 {
 552         struct mspro_block_data *msb = memstick_get_drvdata(card);
 553
 554         if (!(*mrq)->error) {
 555                 if ((*mrq)->data[offsetof(struct ms_status_register, status0)]
 556                     & MEMSTICK_STATUS0_WP)
 557                         msb->read_only = 1;
 558                 else
 559                         msb->read_only = 0;
 560         }
 561
 562         return mspro_block_complete_req(card, (*mrq)->error);
 563 }
 564
 565 static int h_mspro_block_wait_for_ced(struct memstick_dev *card,
 566                                       struct memstick_request **mrq)
 567 {
 568         dev_dbg(&card->dev, "wait for ced: value %x\n", (*mrq)->data[0]);
 569
 570         if (!(*mrq)->error) {
 571                 if ((*mrq)->data[0] & (MEMSTICK_INT_CMDNAK | MEMSTICK_INT_ERR))
 572                         (*mrq)->error = -EFAULT;
 573                 else if (!((*mrq)->data[0] & MEMSTICK_INT_CED))
 574                         return 0;
 575         }
 576
 577         return mspro_block_complete_req(card, (*mrq)->error);
 578 }
 579
 580 static int h_mspro_block_transfer_data(struct memstick_dev *card,
 581                                        struct memstick_request **mrq)
 582 {
 583         struct mspro_block_data *msb = memstick_get_drvdata(card);
 584         unsigned char t_val = 0;
 585         struct scatterlist t_sg = { 0 };
 586         size_t t_offset;
 587
 588         if ((*mrq)->error)
 589                 return mspro_block_complete_req(card, (*mrq)->error);
 590
 591         switch ((*mrq)->tpc) {
 592         case MS_TPC_WRITE_REG:
 593                 memstick_init_req(*mrq, MS_TPC_SET_CMD, &msb->transfer_cmd, 1);
 594                 (*mrq)->need_card_int = 1;
 595                 return 0;
 596         case MS_TPC_SET_CMD:
 597                 t_val = (*mrq)->int_reg;
 598                 memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
 599                 if (msb->caps & MEMSTICK_CAP_AUTO_GET_INT)
 600                         goto has_int_reg;
 601                 return 0;
 602         case MS_TPC_GET_INT:
 603                 t_val = (*mrq)->data[0];
 604 has_int_reg:
 605                 if (t_val & (MEMSTICK_INT_CMDNAK | MEMSTICK_INT_ERR)) {
 606                         t_val = MSPRO_CMD_STOP;
 607                         memstick_init_req(*mrq, MS_TPC_SET_CMD, &t_val, 1);
 608                         card->next_request = h_mspro_block_default;
 609                         return 0;
 610                 }
 611
 612                 if (msb->current_page
 613                     == (msb->req_sg[msb->current_seg].length
 614                         / msb->page_size)) {
 615                         msb->current_page = 0;
 616                         msb->current_seg++;
 617
 618                         if (msb->current_seg == msb->seg_count) {
 619                                 if (t_val & MEMSTICK_INT_CED) {
 620                                         return mspro_block_complete_req(card,
 621                                                                         0);
 622                                 } else {
 623                                         card->next_request
 624                                                 = h_mspro_block_wait_for_ced;
 625                                         memstick_init_req(*mrq, MS_TPC_GET_INT,
 626                                                           NULL, 1);
 627                                         return 0;
 628                                 }
 629                         }
 630                 }
 631
 632                 if (!(t_val & MEMSTICK_INT_BREQ)) {
 633                         memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
 634                         return 0;
 635                 }
 636
 637                 t_offset = msb->req_sg[msb->current_seg].offset;
 638                 t_offset += msb->current_page * msb->page_size;
 639
 640                 sg_set_page(&t_sg,
 641                             nth_page(sg_page(&(msb->req_sg[msb->current_seg])),
 642                                      t_offset >> PAGE_SHIFT),
 643                             msb->page_size, offset_in_page(t_offset));
 644
 645                 memstick_init_req_sg(*mrq, msb->data_dir == READ
 646                                            ? MS_TPC_READ_LONG_DATA
 647                                            : MS_TPC_WRITE_LONG_DATA,
 648                                      &t_sg);
 649                 (*mrq)->need_card_int = 1;
 650                 return 0;
 651         case MS_TPC_READ_LONG_DATA:
 652         case MS_TPC_WRITE_LONG_DATA:
 653                 msb->current_page++;
 654                 if (msb->caps & MEMSTICK_CAP_AUTO_GET_INT) {
 655                         t_val = (*mrq)->int_reg;
 656                         goto has_int_reg;
 657                 } else {
 658                         memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
 659                         return 0;
 660                 }
 661
 662         default:
 663                 BUG();
 664         }
 665 }
 666
 667 /*** Transfer setup functions for different access methods. ***/
 668
 669 /** Setup data transfer request for SET_CMD TPC with arguments in card
 670  *  registers.
 671  *
 672  *  @card    Current media instance
 673  *  @offset  Target data offset in bytes
 674  *  @length  Required transfer length in bytes.
 675  */
 676 static void h_mspro_block_setup_cmd(struct memstick_dev *card, u64 offset,
 677                                     size_t length)
 678 {
 679         struct mspro_block_data *msb = memstick_get_drvdata(card);
 680         struct mspro_param_register param = {
 681                 .system = msb->system,
 682                 .data_count = cpu_to_be16((uint16_t)(length / msb->page_size)),
 683                 /* ISO C90 warning precludes direct initialization for now. */
 684                 .data_address = 0,
 685                 .tpc_param = 0
 686         };
 687
 688         do_div(offset, msb->page_size);
 689         param.data_address = cpu_to_be32((uint32_t)offset);
 690
 691         card->next_request = h_mspro_block_req_init;
 692         msb->mrq_handler = h_mspro_block_transfer_data;
 693         memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG,
 694                           &param, sizeof(param));
 695 }
 696
 697 /*** Data transfer ***/
 698
 699 static int mspro_block_issue_req(struct memstick_dev *card, int chunk)
 700 {
 701         struct mspro_block_data *msb = memstick_get_drvdata(card);
 702         u64 t_off;
 703         unsigned int count;
 704
 705 try_again:
 706         while (chunk) {
 707                 msb->current_page = 0;
 708                 msb->current_seg = 0;
 709                 msb->seg_count = blk_rq_map_sg(msb->block_req->q,
 710                                                msb->block_req,
 711                                                msb->req_sg);
 712
 713                 if (!msb->seg_count) {
 714                         chunk = __blk_end_request_cur(msb->block_req, -ENOMEM);
 715                         continue;
 716                 }
 717
 718                 t_off = blk_rq_pos(msb->block_req);
 719                 t_off <<= 9;
 720                 count = blk_rq_bytes(msb->block_req);
 721
 722                 msb->setup_transfer(card, t_off, count);
 723
 724                 msb->data_dir = rq_data_dir(msb->block_req);
 725                 msb->transfer_cmd = msb->data_dir == READ
 726                                     ? MSPRO_CMD_READ_DATA
 727                                     : MSPRO_CMD_WRITE_DATA;
 728
 729                 memstick_new_req(card->host);
 730                 return 0;
 731         }
 732
 733         dev_dbg(&card->dev, "blk_fetch\n");
 734         msb->block_req = blk_fetch_request(msb->queue);
 735         if (!msb->block_req) {
 736                 dev_dbg(&card->dev, "issue end\n");
 737                 return -EAGAIN;
 738         }
 739
 740         dev_dbg(&card->dev, "trying again\n");
 741         chunk = 1;
 742         goto try_again;
 743 }
 744
 745 static int mspro_block_complete_req(struct memstick_dev *card, int error)
 746 {
 747         struct mspro_block_data *msb = memstick_get_drvdata(card);
 748         int chunk, cnt;
 749         unsigned int t_len = 0;
 750         unsigned long flags;
 751
 752         spin_lock_irqsave(&msb->q_lock, flags);
 753         dev_dbg(&card->dev, "complete %d, %d\n", msb->has_request ? 1 : 0,
 754                 error);
 755
 756         if (msb->has_request) {
 757                 /* Nothing to do - not really an error */
 758                 if (error == -EAGAIN)
 759                         error = 0;
 760
 761                 if (error || (card->current_mrq.tpc == MSPRO_CMD_STOP)) {
 762                         if (msb->data_dir == READ) {
 763                                 for (cnt = 0; cnt < msb->current_seg; cnt++) {
 764                                         t_len += msb->req_sg[cnt].length
 765                                                  / msb->page_size;
 766
 767                                         if (msb->current_page)
 768                                                 t_len += msb->current_page - 1;
 769
 770                                         t_len *= msb->page_size;
 771                                 }
 772                         }
 773                 } else
 774                         t_len = blk_rq_bytes(msb->block_req);
 775
 776                 dev_dbg(&card->dev, "transferred %x (%d)\n", t_len, error);
 777
 778                 if (error && !t_len)
 779                         t_len = blk_rq_cur_bytes(msb->block_req);
 780
 781                 chunk = __blk_end_request(msb->block_req, error, t_len);
 782
 783                 error = mspro_block_issue_req(card, chunk);
 784
 785                 if (!error)
 786                         goto out;
 787                 else
 788                         msb->has_request = 0;
 789         } else {
 790                 if (!error)
 791                         error = -EAGAIN;
 792         }
 793
 794         card->next_request = h_mspro_block_default_bad;
 795         complete_all(&card->mrq_complete);
 796 out:
 797         spin_unlock_irqrestore(&msb->q_lock, flags);
 798         return error;
 799 }
 800
 801 static void mspro_block_stop(struct memstick_dev *card)
 802 {
 803         struct mspro_block_data *msb = memstick_get_drvdata(card);
 804         int rc = 0;
 805         unsigned long flags;
 806
 807         while (1) {
 808                 spin_lock_irqsave(&msb->q_lock, flags);
 809                 if (!msb->has_request) {
 810                         blk_stop_queue(msb->queue);
 811                         rc = 1;
 812                 }
 813                 spin_unlock_irqrestore(&msb->q_lock, flags);
 814
 815                 if (rc)
 816                         break;
 817
 818                 wait_for_completion(&card->mrq_complete);
 819         }
 820 }
 821
 822 static void mspro_block_start(struct memstick_dev *card)
 823 {
 824         struct mspro_block_data *msb = memstick_get_drvdata(card);
 825         unsigned long flags;
 826
 827         spin_lock_irqsave(&msb->q_lock, flags);
 828         blk_start_queue(msb->queue);
 829         spin_unlock_irqrestore(&msb->q_lock, flags);
 830 }
 831
 832 static int mspro_block_prepare_req(struct request_queue *q, struct request *req)
 833 {
 834         if (req->cmd_type != REQ_TYPE_FS &&
 835             req->cmd_type != REQ_TYPE_BLOCK_PC) {
 836                 blk_dump_rq_flags(req, "MSPro unsupported request");
 837                 return BLKPREP_KILL;
 838         }
 839
 840         req->cmd_flags |= REQ_DONTPREP;
 841
 842         return BLKPREP_OK;
 843 }
 844
 845 static void mspro_block_submit_req(struct request_queue *q)
 846 {
 847         struct memstick_dev *card = q->queuedata;
 848         struct mspro_block_data *msb = memstick_get_drvdata(card);
 849         struct request *req = NULL;
 850
 851         if (msb->has_request)
 852                 return;
 853
 854         if (msb->eject) {
 855                 while ((req = blk_fetch_request(q)) != NULL)
 856                         __blk_end_request_all(req, -ENODEV);
 857
 858                 return;
 859         }
 860
 861         msb->has_request = 1;
 862         if (mspro_block_issue_req(card, 0))
 863                 msb->has_request = 0;
 864 }
 865
 866 /*** Initialization ***/
 867
 868 static int mspro_block_wait_for_ced(struct memstick_dev *card)
 869 {
 870         struct mspro_block_data *msb = memstick_get_drvdata(card);
 871
 872         card->next_request = h_mspro_block_req_init;
 873         msb->mrq_handler = h_mspro_block_wait_for_ced;
 874         memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1);
 875         memstick_new_req(card->host);
 876         wait_for_completion(&card->mrq_complete);
 877         return card->current_mrq.error;
 878 }
 879
 880 static int mspro_block_set_interface(struct memstick_dev *card,
 881                                      unsigned char sys_reg)
 882 {
 883         struct memstick_host *host = card->host;
 884         struct mspro_block_data *msb = memstick_get_drvdata(card);
 885         struct mspro_param_register param = {
 886                 .system = sys_reg,
 887                 .data_count = 0,
 888                 .data_address = 0,
 889                 .tpc_param = 0
 890         };
 891
 892         card->next_request = h_mspro_block_req_init;
 893         msb->mrq_handler = h_mspro_block_default;
 894         memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, &param,
 895                           sizeof(param));
 896         memstick_new_req(host);
 897         wait_for_completion(&card->mrq_complete);
 898         return card->current_mrq.error;
 899 }
 900
 901 static int mspro_block_switch_interface(struct memstick_dev *card)
 902 {
 903         struct memstick_host *host = card->host;
 904         struct mspro_block_data *msb = memstick_get_drvdata(card);
 905         int rc = 0;
 906
 907 try_again:
 908         if (msb->caps & MEMSTICK_CAP_PAR4)
 909                 rc = mspro_block_set_interface(card, MEMSTICK_SYS_PAR4);
 910         else
 911                 return 0;
 912
 913         if (rc) {
 914                 printk(KERN_WARNING
 915                        "%s: could not switch to 4-bit mode, error %d\n",
 916                        dev_name(&card->dev), rc);
 917                 return 0;
 918         }
 919
 920         msb->system = MEMSTICK_SYS_PAR4;
 921         host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_PAR4);
 922         printk(KERN_INFO "%s: switching to 4-bit parallel mode\n",
 923                dev_name(&card->dev));
 924
 925         if (msb->caps & MEMSTICK_CAP_PAR8) {
 926                 rc = mspro_block_set_interface(card, MEMSTICK_SYS_PAR8);
 927
 928                 if (!rc) {
 929                         msb->system = MEMSTICK_SYS_PAR8;
 930                         host->set_param(host, MEMSTICK_INTERFACE,
 931                                         MEMSTICK_PAR8);
 932                         printk(KERN_INFO
 933                                "%s: switching to 8-bit parallel mode\n",
 934                                dev_name(&card->dev));
 935                 } else
 936                         printk(KERN_WARNING
 937                                "%s: could not switch to 8-bit mode, error %d\n",
 938                                dev_name(&card->dev), rc);
 939         }
 940
 941         card->next_request = h_mspro_block_req_init;
 942         msb->mrq_handler = h_mspro_block_default;
 943         memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1);
 944         memstick_new_req(card->host);
 945         wait_for_completion(&card->mrq_complete);
 946         rc = card->current_mrq.error;
 947
 948         if (rc) {
 949                 printk(KERN_WARNING
 950                        "%s: interface error, trying to fall back to serial\n",
 951                        dev_name(&card->dev));
 952                 msb->system = MEMSTICK_SYS_SERIAL;
 953                 host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_OFF);
 954                 msleep(10);
 955                 host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_ON);
 956                 host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_SERIAL);
 957
 958                 rc = memstick_set_rw_addr(card);
 959                 if (!rc)
 960                         rc = mspro_block_set_interface(card, msb->system);
 961
 962                 if (!rc) {
 963                         msleep(150);
 964                         rc = mspro_block_wait_for_ced(card);
 965                         if (rc)
 966                                 return rc;
 967
 968                         if (msb->caps & MEMSTICK_CAP_PAR8) {
 969                                 msb->caps &= ~MEMSTICK_CAP_PAR8;
 970                                 goto try_again;
 971                         }
 972                 }
 973         }
 974         return rc;
 975 }
 976
 977 /* Memory allocated for attributes by this function should be freed by
 978  * mspro_block_data_clear, no matter if the initialization process succeeded
 979  * or failed.
 980  */
 981 static int mspro_block_read_attributes(struct memstick_dev *card)
 982 {
 983         struct mspro_block_data *msb = memstick_get_drvdata(card);
 984         struct mspro_attribute *attr = NULL;
 985         struct mspro_sys_attr *s_attr = NULL;
 986         unsigned char *buffer = NULL;
 987         int cnt, rc, attr_count;
 988         /* While normally physical device offsets, represented here by
 989          * attr_offset and attr_len will be of large numeric types, we can be
 990          * sure, that attributes are close enough to the beginning of the
 991          * device, to save ourselves some trouble.
 992          */
 993         unsigned int addr, attr_offset = 0, attr_len = msb->page_size;
 994
 995         attr = kmalloc(msb->page_size, GFP_KERNEL);
 996         if (!attr)
 997                 return -ENOMEM;
 998
 999         sg_init_one(&msb->req_sg[0], attr, msb->page_size);
1000         msb->seg_count = 1;
1001         msb->current_seg = 0;
1002         msb->current_page = 0;
1003         msb->data_dir = READ;
1004         msb->transfer_cmd = MSPRO_CMD_READ_ATRB;
1005
1006         msb->setup_transfer(card, attr_offset, attr_len);
1007
1008         memstick_new_req(card->host);
1009         wait_for_completion(&card->mrq_complete);
1010         if (card->current_mrq.error) {
1011                 rc = card->current_mrq.error;
1012                 goto out_free_attr;
1013         }
1014
1015         if (be16_to_cpu(attr->signature) != MSPRO_BLOCK_SIGNATURE) {
1016                 printk(KERN_ERR "%s: unrecognized device signature %x\n",
1017                        dev_name(&card->dev), be16_to_cpu(attr->signature));
1018                 rc = -ENODEV;
1019                 goto out_free_attr;
1020         }
1021
1022         if (attr->count > MSPRO_BLOCK_MAX_ATTRIBUTES) {
1023                 printk(KERN_WARNING "%s: way too many attribute entries\n",
1024                        dev_name(&card->dev));
1025                 attr_count = MSPRO_BLOCK_MAX_ATTRIBUTES;
1026         } else
1027                 attr_count = attr->count;
1028
1029         msb->attr_group.attrs = kzalloc((attr_count + 1)
1030                                         * sizeof(struct attribute),
1031                                         GFP_KERNEL);
1032         if (!msb->attr_group.attrs) {
1033                 rc = -ENOMEM;
1034                 goto out_free_attr;
1035         }
1036         msb->attr_group.name = "media_attributes";
1037
1038         buffer = kmalloc(attr_len, GFP_KERNEL);
1039         if (!buffer) {
1040                 rc = -ENOMEM;
1041                 goto out_free_attr;
1042         }
1043         memcpy(buffer, (char *)attr, attr_len);
1044
1045         for (cnt = 0; cnt < attr_count; ++cnt) {
1046                 s_attr = kzalloc(sizeof(struct mspro_sys_attr), GFP_KERNEL);
1047                 if (!s_attr) {
1048                         rc = -ENOMEM;
1049                         goto out_free_buffer;
1050                 }
1051
1052                 msb->attr_group.attrs[cnt] = &s_attr->dev_attr.attr;
1053                 addr = be32_to_cpu(attr->entries[cnt].address);
1054                 s_attr->size = be32_to_cpu(attr->entries[cnt].size);
1055                 dev_dbg(&card->dev, "adding attribute %d: id %x, address %x, "
1056                         "size %zx\n", cnt, attr->entries[cnt].id, addr,
1057                         s_attr->size);
1058                 s_attr->id = attr->entries[cnt].id;
1059                 if (mspro_block_attr_name(s_attr->id))
1060                         snprintf(s_attr->name, sizeof(s_attr->name), "%s",
1061                                  mspro_block_attr_name(attr->entries[cnt].id));
1062                 else
1063                         snprintf(s_attr->name, sizeof(s_attr->name),
1064                                  "attr_x%02x", attr->entries[cnt].id);
1065
1066                 sysfs_attr_init(&s_attr->dev_attr.attr);
1067                 s_attr->dev_attr.attr.name = s_attr->name;
1068                 s_attr->dev_attr.attr.mode = S_IRUGO;
1069                 s_attr->dev_attr.show = mspro_block_attr_show(s_attr->id);
1070
1071                 if (!s_attr->size)
1072                         continue;
1073
1074                 s_attr->data = kmalloc(s_attr->size, GFP_KERNEL);
1075                 if (!s_attr->data) {
1076                         rc = -ENOMEM;
1077                         goto out_free_buffer;
1078                 }
1079
1080                 if (((addr / msb->page_size) == (attr_offset / msb->page_size))
1081                     && (((addr + s_attr->size - 1) / msb->page_size)
1082                         == (attr_offset / msb->page_size))) {
1083                         memcpy(s_attr->data, buffer + addr % msb->page_size,
1084                                s_attr->size);
1085                         continue;
1086                 }
1087
1088                 attr_offset = (addr / msb->page_size) * msb->page_size;
1089
1090                 if ((attr_offset + attr_len) < (addr + s_attr->size)) {
1091                         kfree(buffer);
1092                         attr_len = (((addr + s_attr->size) / msb->page_size)
1093                                     + 1 ) * msb->page_size - attr_offset;
1094                         buffer = kmalloc(attr_len, GFP_KERNEL);
1095                         if (!buffer) {
1096                                 rc = -ENOMEM;
1097                                 goto out_free_attr;
1098                         }
1099                 }
1100
1101                 sg_init_one(&msb->req_sg[0], buffer, attr_len);
1102                 msb->seg_count = 1;
1103                 msb->current_seg = 0;
1104                 msb->current_page = 0;
1105                 msb->data_dir = READ;
1106                 msb->transfer_cmd = MSPRO_CMD_READ_ATRB;
1107
1108                 dev_dbg(&card->dev, "reading attribute range %x, %x\n",
1109                         attr_offset, attr_len);
1110
1111                 msb->setup_transfer(card, attr_offset, attr_len);
1112                 memstick_new_req(card->host);
1113                 wait_for_completion(&card->mrq_complete);
1114                 if (card->current_mrq.error) {
1115                         rc = card->current_mrq.error;
1116                         goto out_free_buffer;
1117                 }
1118
1119                 memcpy(s_attr->data, buffer + addr % msb->page_size,
1120                        s_attr->size);
1121         }
1122
1123         rc = 0;
1124 out_free_buffer:
1125         kfree(buffer);
1126 out_free_attr:
1127         kfree(attr);
1128         return rc;
1129 }
1130
1131 static int mspro_block_init_card(struct memstick_dev *card)
1132 {
1133         struct mspro_block_data *msb = memstick_get_drvdata(card);
1134         struct memstick_host *host = card->host;
1135         int rc = 0;
1136
1137         msb->system = MEMSTICK_SYS_SERIAL;
1138         msb->setup_transfer = h_mspro_block_setup_cmd;
1139
1140         card->reg_addr.r_offset = offsetof(struct mspro_register, status);
1141         card->reg_addr.r_length = sizeof(struct ms_status_register);
1142         card->reg_addr.w_offset = offsetof(struct mspro_register, param);
1143         card->reg_addr.w_length = sizeof(struct mspro_param_register);
1144
1145         if (memstick_set_rw_addr(card))
1146                 return -EIO;
1147
1148         msb->caps = host->caps;
1149
1150         msleep(150);
1151         rc = mspro_block_wait_for_ced(card);
1152         if (rc)
1153                 return rc;
1154
1155         rc = mspro_block_switch_interface(card);
1156         if (rc)
1157                 return rc;
1158
1159         dev_dbg(&card->dev, "card activated\n");
1160         if (msb->system != MEMSTICK_SYS_SERIAL)
1161                 msb->caps |= MEMSTICK_CAP_AUTO_GET_INT;
1162
1163         card->next_request = h_mspro_block_req_init;
1164         msb->mrq_handler = h_mspro_block_get_ro;
1165         memstick_init_req(&card->current_mrq, MS_TPC_READ_REG, NULL,
1166                           sizeof(struct ms_status_register));
1167         memstick_new_req(card->host);
1168         wait_for_completion(&card->mrq_complete);
1169         if (card->current_mrq.error)
1170                 return card->current_mrq.error;
1171
1172         dev_dbg(&card->dev, "card r/w status %d\n", msb->read_only ? 0 : 1);
1173
1174         msb->page_size = 512;
1175         rc = mspro_block_read_attributes(card);
1176         if (rc)
1177                 return rc;
1178
1179         dev_dbg(&card->dev, "attributes loaded\n");
1180         return 0;
1181
1182 }
1183
1184 static int mspro_block_init_disk(struct memstick_dev *card)
1185 {
1186         struct mspro_block_data *msb = memstick_get_drvdata(card);
1187         struct memstick_host *host = card->host;
1188         struct mspro_devinfo *dev_info = NULL;
1189         struct mspro_sys_info *sys_info = NULL;
1190         struct mspro_sys_attr *s_attr = NULL;
1191         int rc, disk_id;
1192         u64 limit = BLK_BOUNCE_HIGH;
1193         unsigned long capacity;
1194
1195         if (host->dev.dma_mask && *(host->dev.dma_mask))
1196                 limit = *(host->dev.dma_mask);
1197
1198         for (rc = 0; msb->attr_group.attrs[rc]; ++rc) {
1199                 s_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[rc]);
1200
1201                 if (s_attr->id == MSPRO_BLOCK_ID_DEVINFO)
1202                         dev_info = s_attr->data;
1203                 else if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO)
1204                         sys_info = s_attr->data;
1205         }
1206
1207         if (!dev_info || !sys_info)
1208                 return -ENODEV;
1209
1210         msb->cylinders = be16_to_cpu(dev_info->cylinders);
1211         msb->heads = be16_to_cpu(dev_info->heads);
1212         msb->sectors_per_track = be16_to_cpu(dev_info->sectors_per_track);
1213
1214         msb->page_size = be16_to_cpu(sys_info->unit_size);
1215
1216         mutex_lock(&mspro_block_disk_lock);
1217         if (!idr_pre_get(&mspro_block_disk_idr, GFP_KERNEL)) {
1218                 mutex_unlock(&mspro_block_disk_lock);
1219                 return -ENOMEM;
1220         }
1221
1222         rc = idr_get_new(&mspro_block_disk_idr, card, &disk_id);
1223         mutex_unlock(&mspro_block_disk_lock);
1224
1225         if (rc)
1226                 return rc;
1227
1228         if ((disk_id << MSPRO_BLOCK_PART_SHIFT) > 255) {
1229                 rc = -ENOSPC;
1230                 goto out_release_id;
1231         }
1232
1233         msb->disk = alloc_disk(1 << MSPRO_BLOCK_PART_SHIFT);
1234         if (!msb->disk) {
1235                 rc = -ENOMEM;
1236                 goto out_release_id;
1237         }
1238
1239         msb->queue = blk_init_queue(mspro_block_submit_req, &msb->q_lock);
1240         if (!msb->queue) {
1241                 rc = -ENOMEM;
1242                 goto out_put_disk;
1243         }
1244
1245         msb->queue->queuedata = card;
1246         blk_queue_prep_rq(msb->queue, mspro_block_prepare_req);
1247
1248         blk_queue_bounce_limit(msb->queue, limit);
1249         blk_queue_max_hw_sectors(msb->queue, MSPRO_BLOCK_MAX_PAGES);
1250         blk_queue_max_segments(msb->queue, MSPRO_BLOCK_MAX_SEGS);
1251         blk_queue_max_segment_size(msb->queue,
1252                                    MSPRO_BLOCK_MAX_PAGES * msb->page_size);
1253
1254         msb->disk->major = major;
1255         msb->disk->first_minor = disk_id << MSPRO_BLOCK_PART_SHIFT;
1256         msb->disk->fops = &ms_block_bdops;
1257         msb->usage_count = 1;
1258         msb->disk->private_data = msb;
1259         msb->disk->queue = msb->queue;
1260         msb->disk->driverfs_dev = &card->dev;
1261
1262         sprintf(msb->disk->disk_name, "mspblk%d", disk_id);
1263
1264         blk_queue_logical_block_size(msb->queue, msb->page_size);
1265
1266         capacity = be16_to_cpu(sys_info->user_block_count);
1267         capacity *= be16_to_cpu(sys_info->block_size);
1268         capacity *= msb->page_size >> 9;
1269         set_capacity(msb->disk, capacity);
1270         dev_dbg(&card->dev, "capacity set %ld\n", capacity);
1271
1272         add_disk(msb->disk);
1273         msb->active = 1;
1274         return 0;
1275
1276 out_put_disk:
1277         put_disk(msb->disk);
1278 out_release_id:
1279         mutex_lock(&mspro_block_disk_lock);
1280         idr_remove(&mspro_block_disk_idr, disk_id);
1281         mutex_unlock(&mspro_block_disk_lock);
1282         return rc;
1283 }
1284
1285 static void mspro_block_data_clear(struct mspro_block_data *msb)
1286 {
1287         int cnt;
1288         struct mspro_sys_attr *s_attr;
1289
1290         if (msb->attr_group.attrs) {
1291                 for (cnt = 0; msb->attr_group.attrs[cnt]; ++cnt) {
1292                         s_attr = mspro_from_sysfs_attr(msb->attr_group
1293                                                            .attrs[cnt]);
1294                         kfree(s_attr->data);
1295                         kfree(s_attr);
1296                 }
1297                 kfree(msb->attr_group.attrs);
1298         }
1299
1300         msb->card = NULL;
1301 }
1302
1303 static int mspro_block_check_card(struct memstick_dev *card)
1304 {
1305         struct mspro_block_data *msb = memstick_get_drvdata(card);
1306
1307         return (msb->active == 1);
1308 }
1309
1310 static int mspro_block_probe(struct memstick_dev *card)
1311 {
1312         struct mspro_block_data *msb;
1313         int rc = 0;
1314
1315         msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL);
1316         if (!msb)
1317                 return -ENOMEM;
1318         memstick_set_drvdata(card, msb);
1319         msb->card = card;
1320         spin_lock_init(&msb->q_lock);
1321
1322         rc = mspro_block_init_card(card);
1323
1324         if (rc)
1325                 goto out_free;
1326
1327         rc = sysfs_create_group(&card->dev.kobj, &msb->attr_group);
1328         if (rc)
1329                 goto out_free;
1330
1331         rc = mspro_block_init_disk(card);
1332         if (!rc) {
1333                 card->check = mspro_block_check_card;
1334                 card->stop = mspro_block_stop;
1335                 card->start = mspro_block_start;
1336                 return 0;
1337         }
1338
1339         sysfs_remove_group(&card->dev.kobj, &msb->attr_group);
1340 out_free:
1341         memstick_set_drvdata(card, NULL);
1342         mspro_block_data_clear(msb);
1343         kfree(msb);
1344         return rc;
1345 }
1346
1347 static void mspro_block_remove(struct memstick_dev *card)
1348 {
1349         struct mspro_block_data *msb = memstick_get_drvdata(card);
1350         unsigned long flags;
1351
1352         spin_lock_irqsave(&msb->q_lock, flags);
1353         msb->eject = 1;
1354         blk_start_queue(msb->queue);
1355         spin_unlock_irqrestore(&msb->q_lock, flags);
1356
1357         del_gendisk(msb->disk);
1358         dev_dbg(&card->dev, "mspro block remove\n");
1359
1360         blk_cleanup_queue(msb->queue);
1361         msb->queue = NULL;
1362
1363         sysfs_remove_group(&card->dev.kobj, &msb->attr_group);
1364
1365         mutex_lock(&mspro_block_disk_lock);
1366         mspro_block_data_clear(msb);
1367         mutex_unlock(&mspro_block_disk_lock);
1368
1369         mspro_block_disk_release(msb->disk);
1370         memstick_set_drvdata(card, NULL);
1371 }
1372
1373 #ifdef CONFIG_PM
1374
1375 static int mspro_block_suspend(struct memstick_dev *card, pm_message_t state)
1376 {
1377         struct mspro_block_data *msb = memstick_get_drvdata(card);
1378         unsigned long flags;
1379
1380         spin_lock_irqsave(&msb->q_lock, flags);
1381         blk_stop_queue(msb->queue);
1382         msb->active = 0;
1383         spin_unlock_irqrestore(&msb->q_lock, flags);
1384
1385         return 0;
1386 }
1387
1388 static int mspro_block_resume(struct memstick_dev *card)
1389 {
1390         struct mspro_block_data *msb = memstick_get_drvdata(card);
1391         unsigned long flags;
1392         int rc = 0;
1393
1394 #ifdef CONFIG_MEMSTICK_UNSAFE_RESUME
1395
1396         struct mspro_block_data *new_msb;
1397         struct memstick_host *host = card->host;
1398         struct mspro_sys_attr *s_attr, *r_attr;
1399         unsigned char cnt;
1400
1401         mutex_lock(&host->lock);
1402         new_msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL);
1403         if (!new_msb) {
1404                 rc = -ENOMEM;
1405                 goto out_unlock;
1406         }
1407
1408         new_msb->card = card;
1409         memstick_set_drvdata(card, new_msb);
1410         if (mspro_block_init_card(card))
1411                 goto out_free;
1412
1413         for (cnt = 0; new_msb->attr_group.attrs[cnt]
1414                       && msb->attr_group.attrs[cnt]; ++cnt) {
1415                 s_attr = mspro_from_sysfs_attr(new_msb->attr_group.attrs[cnt]);
1416                 r_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[cnt]);
1417
1418                 if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO
1419                     && r_attr->id == s_attr->id) {
1420                         if (memcmp(s_attr->data, r_attr->data, s_attr->size))
1421                                 break;
1422
1423                         msb->active = 1;
1424                         break;
1425                 }
1426         }
1427
1428 out_free:
1429         memstick_set_drvdata(card, msb);
1430         mspro_block_data_clear(new_msb);
1431         kfree(new_msb);
1432 out_unlock:
1433         mutex_unlock(&host->lock);
1434
1435 #endif /* CONFIG_MEMSTICK_UNSAFE_RESUME */
1436
1437         spin_lock_irqsave(&msb->q_lock, flags);
1438         blk_start_queue(msb->queue);
1439         spin_unlock_irqrestore(&msb->q_lock, flags);
1440         return rc;
1441 }
1442
1443 #else
1444
1445 #define mspro_block_suspend NULL
1446 #define mspro_block_resume NULL
1447
1448 #endif /* CONFIG_PM */
1449
1450 static struct memstick_device_id mspro_block_id_tbl[] = {
1451         {MEMSTICK_MATCH_ALL, MEMSTICK_TYPE_PRO, MEMSTICK_CATEGORY_STORAGE_DUO,
1452          MEMSTICK_CLASS_DUO},
1453         {}
1454 };
1455
1456
1457 static struct memstick_driver mspro_block_driver = {
1458         .driver = {
1459                 .name  = DRIVER_NAME,
1460                 .owner = THIS_MODULE
1461         },
1462         .id_table = mspro_block_id_tbl,
1463         .probe    = mspro_block_probe,
1464         .remove   = mspro_block_remove,
1465         .suspend  = mspro_block_suspend,
1466         .resume   = mspro_block_resume
1467 };
1468
1469 static int __init mspro_block_init(void)
1470 {
1471         int rc = -ENOMEM;
1472
1473         rc = register_blkdev(major, DRIVER_NAME);
1474         if (rc < 0) {
1475                 printk(KERN_ERR DRIVER_NAME ": failed to register "
1476                        "major %d, error %d\n", major, rc);
1477                 return rc;
1478         }
1479         if (!major)
1480                 major = rc;
1481
1482         rc = memstick_register_driver(&mspro_block_driver);
1483         if (rc)
1484                 unregister_blkdev(major, DRIVER_NAME);
1485         return rc;
1486 }
1487
1488 static void __exit mspro_block_exit(void)
1489 {
1490         memstick_unregister_driver(&mspro_block_driver);
1491         unregister_blkdev(major, DRIVER_NAME);
1492         idr_destroy(&mspro_block_disk_idr);
1493 }
1494
1495 module_init(mspro_block_init);
1496 module_exit(mspro_block_exit);
1497
1498 MODULE_LICENSE("GPL");
1499 MODULE_AUTHOR("Alex Dubov");
1500 MODULE_DESCRIPTION("Sony MemoryStickPro block device driver");
1501 MODULE_DEVICE_TABLE(memstick, mspro_block_id_tbl);