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

   1 /*
   2  *  Sony MemoryStick Pro storage support
   3  *
   4  *  Copyright (C) 2007 Alex Dubov <oakad@yahoo.com>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  *
  10  * Special thanks to Carlos Corbacho for providing various MemoryStick cards
  11  * that made this driver possible.
  12  *
  13  */
  14
  15 #include <linux/blkdev.h>
  16 #include <linux/idr.h>
  17 #include <linux/hdreg.h>
  18 #include <linux/kthread.h>
  19 #include <linux/delay.h>
  20 #include <linux/memstick.h>
  21
  22 #define DRIVER_NAME "mspro_block"
  23
  24 static int major;
  25 module_param(major, int, 0644);
  26
  27 #define MSPRO_BLOCK_MAX_SEGS  32
  28 #define MSPRO_BLOCK_MAX_PAGES ((2 << 16) - 1)
  29
  30 #define MSPRO_BLOCK_SIGNATURE        0xa5c3
  31 #define MSPRO_BLOCK_MAX_ATTRIBUTES   41
  32
  33 enum {
  34         MSPRO_BLOCK_ID_SYSINFO         = 0x10,
  35         MSPRO_BLOCK_ID_MODELNAME       = 0x15,
  36         MSPRO_BLOCK_ID_MBR             = 0x20,
  37         MSPRO_BLOCK_ID_PBR16           = 0x21,
  38         MSPRO_BLOCK_ID_PBR32           = 0x22,
  39         MSPRO_BLOCK_ID_SPECFILEVALUES1 = 0x25,
  40         MSPRO_BLOCK_ID_SPECFILEVALUES2 = 0x26,
  41         MSPRO_BLOCK_ID_DEVINFO         = 0x30
  42 };
  43
  44 struct mspro_sys_attr {
  45         size_t                  size;
  46         void                    *data;
  47         unsigned char           id;
  48         char                    name[32];
  49         struct device_attribute dev_attr;
  50 };
  51
  52 struct mspro_attr_entry {
  53         unsigned int  address;
  54         unsigned int  size;
  55         unsigned char id;
  56         unsigned char reserved[3];
  57 } __attribute__((packed));
  58
  59 struct mspro_attribute {
  60         unsigned short          signature;
  61         unsigned short          version;
  62         unsigned char           count;
  63         unsigned char           reserved[11];
  64         struct mspro_attr_entry entries[];
  65 } __attribute__((packed));
  66
  67 struct mspro_sys_info {
  68         unsigned char  class;
  69         unsigned char  reserved0;
  70         unsigned short block_size;
  71         unsigned short block_count;
  72         unsigned short user_block_count;
  73         unsigned short page_size;
  74         unsigned char  reserved1[2];
  75         unsigned char  assembly_date[8];
  76         unsigned int   serial_number;
  77         unsigned char  assembly_maker_code;
  78         unsigned char  assembly_model_code[3];
  79         unsigned short memory_maker_code;
  80         unsigned short memory_model_code;
  81         unsigned char  reserved2[4];
  82         unsigned char  vcc;
  83         unsigned char  vpp;
  84         unsigned short controller_number;
  85         unsigned short controller_function;
  86         unsigned short start_sector;
  87         unsigned short unit_size;
  88         unsigned char  ms_sub_class;
  89         unsigned char  reserved3[4];
  90         unsigned char  interface_type;
  91         unsigned short controller_code;
  92         unsigned char  format_type;
  93         unsigned char  reserved4;
  94         unsigned char  device_type;
  95         unsigned char  reserved5[7];
  96         unsigned char  mspro_id[16];
  97         unsigned char  reserved6[16];
  98 } __attribute__((packed));
  99
 100 struct mspro_mbr {
 101         unsigned char boot_partition;
 102         unsigned char start_head;
 103         unsigned char start_sector;
 104         unsigned char start_cylinder;
 105         unsigned char partition_type;
 106         unsigned char end_head;
 107         unsigned char end_sector;
 108         unsigned char end_cylinder;
 109         unsigned int  start_sectors;
 110         unsigned int  sectors_per_partition;
 111 } __attribute__((packed));
 112
 113 struct mspro_specfile {
 114         char           name[8];
 115         char           ext[3];
 116         unsigned char  attr;
 117         unsigned char  reserved[10];
 118         unsigned short time;
 119         unsigned short date;
 120         unsigned short cluster;
 121         unsigned int   size;
 122 } __attribute__((packed));
 123
 124 struct mspro_devinfo {
 125         unsigned short cylinders;
 126         unsigned short heads;
 127         unsigned short bytes_per_track;
 128         unsigned short bytes_per_sector;
 129         unsigned short sectors_per_track;
 130         unsigned char  reserved[6];
 131 } __attribute__((packed));
 132
 133 struct mspro_block_data {
 134         struct memstick_dev   *card;
 135         unsigned int          usage_count;
 136         unsigned int          caps;
 137         struct gendisk        *disk;
 138         struct request_queue  *queue;
 139         spinlock_t            q_lock;
 140         wait_queue_head_t     q_wait;
 141         struct task_struct    *q_thread;
 142
 143         unsigned short        page_size;
 144         unsigned short        cylinders;
 145         unsigned short        heads;
 146         unsigned short        sectors_per_track;
 147
 148         unsigned char         system;
 149         unsigned char         read_only:1,
 150                               active:1,
 151                               has_request:1,
 152                               data_dir:1;
 153         unsigned char         transfer_cmd;
 154
 155         int                   (*mrq_handler)(struct memstick_dev *card,
 156                                              struct memstick_request **mrq);
 157
 158         struct attribute_group attr_group;
 159
 160         struct scatterlist    req_sg[MSPRO_BLOCK_MAX_SEGS];
 161         unsigned int          seg_count;
 162         unsigned int          current_seg;
 163         unsigned short        current_page;
 164 };
 165
 166 static DEFINE_IDR(mspro_block_disk_idr);
 167 static DEFINE_MUTEX(mspro_block_disk_lock);
 168
 169 /*** Block device ***/
 170
 171 static int mspro_block_bd_open(struct inode *inode, struct file *filp)
 172 {
 173         struct gendisk *disk = inode->i_bdev->bd_disk;
 174         struct mspro_block_data *msb = disk->private_data;
 175         int rc = -ENXIO;
 176
 177         mutex_lock(&mspro_block_disk_lock);
 178
 179         if (msb && msb->card) {
 180                 msb->usage_count++;
 181                 if ((filp->f_mode & FMODE_WRITE) && msb->read_only)
 182                         rc = -EROFS;
 183                 else
 184                         rc = 0;
 185         }
 186
 187         mutex_unlock(&mspro_block_disk_lock);
 188
 189         return rc;
 190 }
 191
 192
 193 static int mspro_block_disk_release(struct gendisk *disk)
 194 {
 195         struct mspro_block_data *msb = disk->private_data;
 196         int disk_id = disk->first_minor >> MEMSTICK_PART_SHIFT;
 197
 198         mutex_lock(&mspro_block_disk_lock);
 199
 200         if (msb->usage_count) {
 201                 msb->usage_count--;
 202                 if (!msb->usage_count) {
 203                         kfree(msb);
 204                         disk->private_data = NULL;
 205                         idr_remove(&mspro_block_disk_idr, disk_id);
 206                         put_disk(disk);
 207                 }
 208         }
 209
 210         mutex_unlock(&mspro_block_disk_lock);
 211
 212         return 0;
 213 }
 214
 215 static int mspro_block_bd_release(struct inode *inode, struct file *filp)
 216 {
 217         struct gendisk *disk = inode->i_bdev->bd_disk;
 218         return mspro_block_disk_release(disk);
 219 }
 220
 221 static int mspro_block_bd_getgeo(struct block_device *bdev,
 222                                  struct hd_geometry *geo)
 223 {
 224         struct mspro_block_data *msb = bdev->bd_disk->private_data;
 225
 226         geo->heads = msb->heads;
 227         geo->sectors = msb->sectors_per_track;
 228         geo->cylinders = msb->cylinders;
 229
 230         return 0;
 231 }
 232
 233 static struct block_device_operations ms_block_bdops = {
 234         .open    = mspro_block_bd_open,
 235         .release = mspro_block_bd_release,
 236         .getgeo  = mspro_block_bd_getgeo,
 237         .owner   = THIS_MODULE
 238 };
 239
 240 /*** Information ***/
 241
 242 static struct mspro_sys_attr *mspro_from_sysfs_attr(struct attribute *attr)
 243 {
 244         struct device_attribute *dev_attr
 245                 = container_of(attr, struct device_attribute, attr);
 246         return container_of(dev_attr, struct mspro_sys_attr, dev_attr);
 247 }
 248
 249 static const char *mspro_block_attr_name(unsigned char tag)
 250 {
 251         switch (tag) {
 252         case MSPRO_BLOCK_ID_SYSINFO:
 253                 return "attr_sysinfo";
 254         case MSPRO_BLOCK_ID_MODELNAME:
 255                 return "attr_modelname";
 256         case MSPRO_BLOCK_ID_MBR:
 257                 return "attr_mbr";
 258         case MSPRO_BLOCK_ID_PBR16:
 259                 return "attr_pbr16";
 260         case MSPRO_BLOCK_ID_PBR32:
 261                 return "attr_pbr32";
 262         case MSPRO_BLOCK_ID_SPECFILEVALUES1:
 263                 return "attr_specfilevalues1";
 264         case MSPRO_BLOCK_ID_SPECFILEVALUES2:
 265                 return "attr_specfilevalues2";
 266         case MSPRO_BLOCK_ID_DEVINFO:
 267                 return "attr_devinfo";
 268         default:
 269                 return NULL;
 270         };
 271 }
 272
 273 typedef ssize_t (*sysfs_show_t)(struct device *dev,
 274                                 struct device_attribute *attr,
 275                                 char *buffer);
 276
 277 static ssize_t mspro_block_attr_show_default(struct device *dev,
 278                                              struct device_attribute *attr,
 279                                              char *buffer)
 280 {
 281         struct mspro_sys_attr *s_attr = container_of(attr,
 282                                                      struct mspro_sys_attr,
 283                                                      dev_attr);
 284
 285         ssize_t cnt, rc = 0;
 286
 287         for (cnt = 0; cnt < s_attr->size; cnt++) {
 288                 if (cnt && !(cnt % 16)) {
 289                         if (PAGE_SIZE - rc)
 290                                 buffer[rc++] = '\n';
 291                 }
 292
 293                 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "%02x ",
 294                                 ((unsigned char *)s_attr->data)[cnt]);
 295         }
 296         return rc;
 297 }
 298
 299 static ssize_t mspro_block_attr_show_sysinfo(struct device *dev,
 300                                              struct device_attribute *attr,
 301                                              char *buffer)
 302 {
 303         struct mspro_sys_attr *x_attr = container_of(attr,
 304                                                      struct mspro_sys_attr,
 305                                                      dev_attr);
 306         struct mspro_sys_info *x_sys = x_attr->data;
 307         ssize_t rc = 0;
 308         int date_tz = 0, date_tz_f = 0;
 309
 310         if (x_sys->assembly_date[0] > 0x80U) {
 311                 date_tz = (~x_sys->assembly_date[0]) + 1;
 312                 date_tz_f = date_tz & 3;
 313                 date_tz >>= 2;
 314                 date_tz = -date_tz;
 315                 date_tz_f *= 15;
 316         } else if (x_sys->assembly_date[0] < 0x80U) {
 317                 date_tz = x_sys->assembly_date[0];
 318                 date_tz_f = date_tz & 3;
 319                 date_tz >>= 2;
 320                 date_tz_f *= 15;
 321         }
 322
 323         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "class: %x\n",
 324                         x_sys->class);
 325         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "block size: %x\n",
 326                         be16_to_cpu(x_sys->block_size));
 327         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "block count: %x\n",
 328                         be16_to_cpu(x_sys->block_count));
 329         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "user block count: %x\n",
 330                         be16_to_cpu(x_sys->user_block_count));
 331         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "page size: %x\n",
 332                         be16_to_cpu(x_sys->page_size));
 333         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "assembly date: "
 334                         "GMT%+d:%d %04u-%02u-%02u %02u:%02u:%02u\n",
 335                         date_tz, date_tz_f,
 336                         be16_to_cpu(*(unsigned short *)
 337                                     &x_sys->assembly_date[1]),
 338                         x_sys->assembly_date[3], x_sys->assembly_date[4],
 339                         x_sys->assembly_date[5], x_sys->assembly_date[6],
 340                         x_sys->assembly_date[7]);
 341         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "serial number: %x\n",
 342                         be32_to_cpu(x_sys->serial_number));
 343         rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
 344                         "assembly maker code: %x\n",
 345                         x_sys->assembly_maker_code);
 346         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "assembly model code: "
 347                         "%02x%02x%02x\n", x_sys->assembly_model_code[0],
 348                         x_sys->assembly_model_code[1],
 349                         x_sys->assembly_model_code[2]);
 350         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "memory maker code: %x\n",
 351                         be16_to_cpu(x_sys->memory_maker_code));
 352         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "memory model code: %x\n",
 353                         be16_to_cpu(x_sys->memory_model_code));
 354         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "vcc: %x\n",
 355                         x_sys->vcc);
 356         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "vpp: %x\n",
 357                         x_sys->vpp);
 358         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "controller number: %x\n",
 359                         be16_to_cpu(x_sys->controller_number));
 360         rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
 361                         "controller function: %x\n",
 362                         be16_to_cpu(x_sys->controller_function));
 363         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sector: %x\n",
 364                         be16_to_cpu(x_sys->start_sector));
 365         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "unit size: %x\n",
 366                         be16_to_cpu(x_sys->unit_size));
 367         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "sub class: %x\n",
 368                         x_sys->ms_sub_class);
 369         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "interface type: %x\n",
 370                         x_sys->interface_type);
 371         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "controller code: %x\n",
 372                         be16_to_cpu(x_sys->controller_code));
 373         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "format type: %x\n",
 374                         x_sys->format_type);
 375         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "device type: %x\n",
 376                         x_sys->device_type);
 377         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "mspro id: %s\n",
 378                         x_sys->mspro_id);
 379         return rc;
 380 }
 381
 382 static ssize_t mspro_block_attr_show_modelname(struct device *dev,
 383                                                struct device_attribute *attr,
 384                                                char *buffer)
 385 {
 386         struct mspro_sys_attr *s_attr = container_of(attr,
 387                                                      struct mspro_sys_attr,
 388                                                      dev_attr);
 389
 390         return scnprintf(buffer, PAGE_SIZE, "%s", (char *)s_attr->data);
 391 }
 392
 393 static ssize_t mspro_block_attr_show_mbr(struct device *dev,
 394                                          struct device_attribute *attr,
 395                                          char *buffer)
 396 {
 397         struct mspro_sys_attr *x_attr = container_of(attr,
 398                                                      struct mspro_sys_attr,
 399                                                      dev_attr);
 400         struct mspro_mbr *x_mbr = x_attr->data;
 401         ssize_t rc = 0;
 402
 403         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "boot partition: %x\n",
 404                         x_mbr->boot_partition);
 405         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start head: %x\n",
 406                         x_mbr->start_head);
 407         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sector: %x\n",
 408                         x_mbr->start_sector);
 409         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start cylinder: %x\n",
 410                         x_mbr->start_cylinder);
 411         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "partition type: %x\n",
 412                         x_mbr->partition_type);
 413         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end head: %x\n",
 414                         x_mbr->end_head);
 415         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end sector: %x\n",
 416                         x_mbr->end_sector);
 417         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end cylinder: %x\n",
 418                         x_mbr->end_cylinder);
 419         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sectors: %x\n",
 420                         x_mbr->start_sectors);
 421         rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
 422                         "sectors per partition: %x\n",
 423                         x_mbr->sectors_per_partition);
 424         return rc;
 425 }
 426
 427 static ssize_t mspro_block_attr_show_specfile(struct device *dev,
 428                                               struct device_attribute *attr,
 429                                               char *buffer)
 430 {
 431         struct mspro_sys_attr *x_attr = container_of(attr,
 432                                                      struct mspro_sys_attr,
 433                                                      dev_attr);
 434         struct mspro_specfile *x_spfile = x_attr->data;
 435         char name[9], ext[4];
 436         ssize_t rc = 0;
 437
 438         memcpy(name, x_spfile->name, 8);
 439         name[8] = 0;
 440         memcpy(ext, x_spfile->ext, 3);
 441         ext[3] = 0;
 442
 443         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "name: %s\n", name);
 444         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "ext: %s\n", ext);
 445         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "attribute: %x\n",
 446                         x_spfile->attr);
 447         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "time: %d:%d:%d\n",
 448                         x_spfile->time >> 11,
 449                         (x_spfile->time >> 5) & 0x3f,
 450                         (x_spfile->time & 0x1f) * 2);
 451         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "date: %d-%d-%d\n",
 452                         (x_spfile->date >> 9) + 1980,
 453                         (x_spfile->date >> 5) & 0xf,
 454                         x_spfile->date & 0x1f);
 455         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start cluster: %x\n",
 456                         x_spfile->cluster);
 457         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "size: %x\n",
 458                         x_spfile->size);
 459         return rc;
 460 }
 461
 462 static ssize_t mspro_block_attr_show_devinfo(struct device *dev,
 463                                              struct device_attribute *attr,
 464                                              char *buffer)
 465 {
 466         struct mspro_sys_attr *x_attr = container_of(attr,
 467                                                      struct mspro_sys_attr,
 468                                                      dev_attr);
 469         struct mspro_devinfo *x_devinfo = x_attr->data;
 470         ssize_t rc = 0;
 471
 472         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "cylinders: %x\n",
 473                         be16_to_cpu(x_devinfo->cylinders));
 474         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "heads: %x\n",
 475                         be16_to_cpu(x_devinfo->heads));
 476         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "bytes per track: %x\n",
 477                         be16_to_cpu(x_devinfo->bytes_per_track));
 478         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "bytes per sector: %x\n",
 479                         be16_to_cpu(x_devinfo->bytes_per_sector));
 480         rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "sectors per track: %x\n",
 481                         be16_to_cpu(x_devinfo->sectors_per_track));
 482         return rc;
 483 }
 484
 485 static sysfs_show_t mspro_block_attr_show(unsigned char tag)
 486 {
 487         switch (tag) {
 488         case MSPRO_BLOCK_ID_SYSINFO:
 489                 return mspro_block_attr_show_sysinfo;
 490         case MSPRO_BLOCK_ID_MODELNAME:
 491                 return mspro_block_attr_show_modelname;
 492         case MSPRO_BLOCK_ID_MBR:
 493                 return mspro_block_attr_show_mbr;
 494         case MSPRO_BLOCK_ID_SPECFILEVALUES1:
 495         case MSPRO_BLOCK_ID_SPECFILEVALUES2:
 496                 return mspro_block_attr_show_specfile;
 497         case MSPRO_BLOCK_ID_DEVINFO:
 498                 return mspro_block_attr_show_devinfo;
 499         default:
 500                 return mspro_block_attr_show_default;
 501         }
 502 }
 503
 504 /*** Protocol handlers ***/
 505
 506 /*
 507  * Functions prefixed with "h_" are protocol callbacks. They can be called from
 508  * interrupt context. Return value of 0 means that request processing is still
 509  * ongoing, while special error value of -EAGAIN means that current request is
 510  * finished (and request processor should come back some time later).
 511  */
 512
 513 static int h_mspro_block_req_init(struct memstick_dev *card,
 514                                   struct memstick_request **mrq)
 515 {
 516         struct mspro_block_data *msb = memstick_get_drvdata(card);
 517
 518         *mrq = &card->current_mrq;
 519         card->next_request = msb->mrq_handler;
 520         return 0;
 521 }
 522
 523 static int h_mspro_block_default(struct memstick_dev *card,
 524                                  struct memstick_request **mrq)
 525 {
 526         complete(&card->mrq_complete);
 527         if (!(*mrq)->error)
 528                 return -EAGAIN;
 529         else
 530                 return (*mrq)->error;
 531 }
 532
 533 static int h_mspro_block_get_ro(struct memstick_dev *card,
 534                                 struct memstick_request **mrq)
 535 {
 536         struct mspro_block_data *msb = memstick_get_drvdata(card);
 537
 538         if ((*mrq)->error) {
 539                 complete(&card->mrq_complete);
 540                 return (*mrq)->error;
 541         }
 542
 543         if ((*mrq)->data[offsetof(struct ms_status_register, status0)]
 544             & MEMSTICK_STATUS0_WP)
 545                 msb->read_only = 1;
 546         else
 547                 msb->read_only = 0;
 548
 549         complete(&card->mrq_complete);
 550         return -EAGAIN;
 551 }
 552
 553 static int h_mspro_block_wait_for_ced(struct memstick_dev *card,
 554                                       struct memstick_request **mrq)
 555 {
 556         if ((*mrq)->error) {
 557                 complete(&card->mrq_complete);
 558                 return (*mrq)->error;
 559         }
 560
 561         dev_dbg(&card->dev, "wait for ced: value %x\n", (*mrq)->data[0]);
 562
 563         if ((*mrq)->data[0] & (MEMSTICK_INT_CMDNAK | MEMSTICK_INT_ERR)) {
 564                 card->current_mrq.error = -EFAULT;
 565                 complete(&card->mrq_complete);
 566                 return card->current_mrq.error;
 567         }
 568
 569         if (!((*mrq)->data[0] & MEMSTICK_INT_CED))
 570                 return 0;
 571         else {
 572                 card->current_mrq.error = 0;
 573                 complete(&card->mrq_complete);
 574                 return -EAGAIN;
 575         }
 576 }
 577
 578 static int h_mspro_block_transfer_data(struct memstick_dev *card,
 579                                        struct memstick_request **mrq)
 580 {
 581         struct mspro_block_data *msb = memstick_get_drvdata(card);
 582         unsigned char t_val = 0;
 583         struct scatterlist t_sg = { 0 };
 584         size_t t_offset;
 585
 586         if ((*mrq)->error) {
 587                 complete(&card->mrq_complete);
 588                 return (*mrq)->error;
 589         }
 590
 591         switch ((*mrq)->tpc) {
 592         case MS_TPC_WRITE_REG:
 593                 memstick_init_req(*mrq, MS_TPC_SET_CMD, &msb->transfer_cmd, 1);
 594                 (*mrq)->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                                         complete(&card->mrq_complete);
 621                                         return -EAGAIN;
 622                                 } else {
 623                                         card->next_request
 624                                                 = h_mspro_block_wait_for_ced;
 625                                         memstick_init_req(*mrq, MS_TPC_GET_INT,
 626                                                           NULL, 1);
 627                                         return 0;
 628                                 }
 629                         }
 630                 }
 631
 632                 if (!(t_val & MEMSTICK_INT_BREQ)) {
 633                         memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
 634                         return 0;
 635                 }
 636
 637                 t_offset = msb->req_sg[msb->current_seg].offset;
 638                 t_offset += msb->current_page * msb->page_size;
 639
 640                 sg_set_page(&t_sg,
 641                             nth_page(sg_page(&(msb->req_sg[msb->current_seg])),
 642                                      t_offset >> PAGE_SHIFT),
 643                             msb->page_size, offset_in_page(t_offset));
 644
 645                 memstick_init_req_sg(*mrq, msb->data_dir == READ
 646                                            ? MS_TPC_READ_LONG_DATA
 647                                            : MS_TPC_WRITE_LONG_DATA,
 648                                      &t_sg);
 649                 (*mrq)->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 /*** Data transfer ***/
 668
 669 static void mspro_block_process_request(struct memstick_dev *card,
 670                                         struct request *req)
 671 {
 672         struct mspro_block_data *msb = memstick_get_drvdata(card);
 673         struct mspro_param_register param;
 674         int rc, chunk, cnt;
 675         unsigned short page_count;
 676         sector_t t_sec;
 677         unsigned long flags;
 678
 679         do {
 680                 page_count = 0;
 681                 msb->current_seg = 0;
 682                 msb->seg_count = blk_rq_map_sg(req->q, req, msb->req_sg);
 683
 684                 if (msb->seg_count) {
 685                         msb->current_page = 0;
 686                         for (rc = 0; rc < msb->seg_count; rc++)
 687                                 page_count += msb->req_sg[rc].length
 688                                               / msb->page_size;
 689
 690                         t_sec = req->sector;
 691                         sector_div(t_sec, msb->page_size >> 9);
 692                         param.system = msb->system;
 693                         param.data_count = cpu_to_be16(page_count);
 694                         param.data_address = cpu_to_be32((uint32_t)t_sec);
 695                         param.tpc_param = 0;
 696
 697                         msb->data_dir = rq_data_dir(req);
 698                         msb->transfer_cmd = msb->data_dir == READ
 699                                             ? MSPRO_CMD_READ_DATA
 700                                             : MSPRO_CMD_WRITE_DATA;
 701
 702                         dev_dbg(&card->dev, "data transfer: cmd %x, "
 703                                 "lba %x, count %x\n", msb->transfer_cmd,
 704                                 be32_to_cpu(param.data_address),
 705                                 page_count);
 706
 707                         card->next_request = h_mspro_block_req_init;
 708                         msb->mrq_handler = h_mspro_block_transfer_data;
 709                         memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG,
 710                                           &param, sizeof(param));
 711                         memstick_new_req(card->host);
 712                         wait_for_completion(&card->mrq_complete);
 713                         rc = card->current_mrq.error;
 714
 715                         if (rc || (card->current_mrq.tpc == MSPRO_CMD_STOP)) {
 716                                 for (cnt = 0; cnt < msb->current_seg; cnt++)
 717                                         page_count += msb->req_sg[cnt].length
 718                                                       / msb->page_size;
 719
 720                                 if (msb->current_page)
 721                                         page_count += msb->current_page - 1;
 722
 723                                 if (page_count && (msb->data_dir == READ))
 724                                         rc = msb->page_size * page_count;
 725                                 else
 726                                         rc = -EIO;
 727                         } else
 728                                 rc = msb->page_size * page_count;
 729                 } else
 730                         rc = -EFAULT;
 731
 732                 spin_lock_irqsave(&msb->q_lock, flags);
 733                 if (rc >= 0)
 734                         chunk = __blk_end_request(req, 0, rc);
 735                 else
 736                         chunk = __blk_end_request(req, rc, 0);
 737
 738                 dev_dbg(&card->dev, "end chunk %d, %d\n", rc, chunk);
 739                 spin_unlock_irqrestore(&msb->q_lock, flags);
 740         } while (chunk);
 741 }
 742
 743 static int mspro_block_has_request(struct mspro_block_data *msb)
 744 {
 745         int rc = 0;
 746         unsigned long flags;
 747
 748         spin_lock_irqsave(&msb->q_lock, flags);
 749         if (kthread_should_stop() || msb->has_request)
 750                 rc = 1;
 751         spin_unlock_irqrestore(&msb->q_lock, flags);
 752         return rc;
 753 }
 754
 755 static void mspro_block_stop(struct memstick_dev *card)
 756 {
 757         struct mspro_block_data *msb = memstick_get_drvdata(card);
 758         int rc = 0;
 759         unsigned long flags;
 760
 761         while (1) {
 762                 spin_lock_irqsave(&msb->q_lock, flags);
 763                 if (!msb->has_request) {
 764                         blk_stop_queue(msb->queue);
 765                         rc = 1;
 766                 }
 767                 spin_unlock_irqrestore(&msb->q_lock, flags);
 768
 769                 if (rc)
 770                         break;
 771
 772                 wait_for_completion(&card->mrq_complete);
 773         }
 774 }
 775
 776 static void mspro_block_start(struct memstick_dev *card)
 777 {
 778         struct mspro_block_data *msb = memstick_get_drvdata(card);
 779         unsigned long flags;
 780
 781         spin_lock_irqsave(&msb->q_lock, flags);
 782         blk_start_queue(msb->queue);
 783         spin_unlock_irqrestore(&msb->q_lock, flags);
 784 }
 785
 786 static int mspro_block_queue_thread(void *data)
 787 {
 788         struct memstick_dev *card = data;
 789         struct memstick_host *host = card->host;
 790         struct mspro_block_data *msb = memstick_get_drvdata(card);
 791         struct request *req;
 792         unsigned long flags;
 793
 794         while (1) {
 795                 wait_event(msb->q_wait, mspro_block_has_request(msb));
 796                 dev_dbg(&card->dev, "thread iter\n");
 797
 798                 spin_lock_irqsave(&msb->q_lock, flags);
 799                 req = elv_next_request(msb->queue);
 800                 dev_dbg(&card->dev, "next req %p\n", req);
 801                 if (!req) {
 802                         msb->has_request = 0;
 803                         if (kthread_should_stop()) {
 804                                 spin_unlock_irqrestore(&msb->q_lock, flags);
 805                                 break;
 806                         }
 807                 } else
 808                         msb->has_request = 1;
 809                 spin_unlock_irqrestore(&msb->q_lock, flags);
 810
 811                 if (req) {
 812                         mutex_lock(&host->lock);
 813                         mspro_block_process_request(card, req);
 814                         mutex_unlock(&host->lock);
 815                 }
 816         }
 817         dev_dbg(&card->dev, "thread finished\n");
 818         return 0;
 819 }
 820
 821 static void mspro_block_request(struct request_queue *q)
 822 {
 823         struct memstick_dev *card = q->queuedata;
 824         struct mspro_block_data *msb = memstick_get_drvdata(card);
 825         struct request *req = NULL;
 826
 827         if (msb->q_thread) {
 828                 msb->has_request = 1;
 829                 wake_up_all(&msb->q_wait);
 830         } else {
 831                 while ((req = elv_next_request(q)) != NULL)
 832                         end_queued_request(req, -ENODEV);
 833         }
 834 }
 835
 836 /*** Initialization ***/
 837
 838 static int mspro_block_wait_for_ced(struct memstick_dev *card)
 839 {
 840         struct mspro_block_data *msb = memstick_get_drvdata(card);
 841
 842         card->next_request = h_mspro_block_req_init;
 843         msb->mrq_handler = h_mspro_block_wait_for_ced;
 844         memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1);
 845         memstick_new_req(card->host);
 846         wait_for_completion(&card->mrq_complete);
 847         return card->current_mrq.error;
 848 }
 849
 850 static int mspro_block_set_interface(struct memstick_dev *card,
 851                                      unsigned char sys_reg)
 852 {
 853         struct memstick_host *host = card->host;
 854         struct mspro_block_data *msb = memstick_get_drvdata(card);
 855         struct mspro_param_register param = {
 856                 .system = sys_reg,
 857                 .data_count = 0,
 858                 .data_address = 0,
 859                 .tpc_param = 0
 860         };
 861
 862         card->next_request = h_mspro_block_req_init;
 863         msb->mrq_handler = h_mspro_block_default;
 864         memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, &param,
 865                           sizeof(param));
 866         memstick_new_req(host);
 867         wait_for_completion(&card->mrq_complete);
 868         return card->current_mrq.error;
 869 }
 870
 871 static int mspro_block_switch_interface(struct memstick_dev *card)
 872 {
 873         struct memstick_host *host = card->host;
 874         struct mspro_block_data *msb = memstick_get_drvdata(card);
 875         int rc = 0;
 876
 877         if (msb->caps & MEMSTICK_CAP_PAR4)
 878                 rc = mspro_block_set_interface(card, MEMSTICK_SYS_PAR4);
 879         else
 880                 return 0;
 881
 882         if (rc) {
 883                 printk(KERN_WARNING
 884                        "%s: could not switch to 4-bit mode, error %d\n",
 885                        card->dev.bus_id, rc);
 886                 return 0;
 887         }
 888
 889         msb->system = MEMSTICK_SYS_PAR4;
 890         host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_PAR4);
 891         printk(KERN_INFO "%s: switching to 4-bit parallel mode\n",
 892                card->dev.bus_id);
 893
 894         if (msb->caps & MEMSTICK_CAP_PAR8) {
 895                 rc = mspro_block_set_interface(card, MEMSTICK_SYS_PAR8);
 896
 897                 if (!rc) {
 898                         msb->system = MEMSTICK_SYS_PAR8;
 899                         host->set_param(host, MEMSTICK_INTERFACE,
 900                                         MEMSTICK_PAR8);
 901                         printk(KERN_INFO
 902                                "%s: switching to 8-bit parallel mode\n",
 903                                card->dev.bus_id);
 904                 } else
 905                         printk(KERN_WARNING
 906                                "%s: could not switch to 8-bit mode, error %d\n",
 907                                card->dev.bus_id, rc);
 908         }
 909
 910         card->next_request = h_mspro_block_req_init;
 911         msb->mrq_handler = h_mspro_block_default;
 912         memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1);
 913         memstick_new_req(card->host);
 914         wait_for_completion(&card->mrq_complete);
 915         rc = card->current_mrq.error;
 916
 917         if (rc) {
 918                 printk(KERN_WARNING
 919                        "%s: interface error, trying to fall back to serial\n",
 920                        card->dev.bus_id);
 921                 msb->system = MEMSTICK_SYS_SERIAL;
 922                 host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_OFF);
 923                 msleep(10);
 924                 host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_ON);
 925                 host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_SERIAL);
 926
 927                 rc = memstick_set_rw_addr(card);
 928                 if (!rc)
 929                         rc = mspro_block_set_interface(card, msb->system);
 930         }
 931         return rc;
 932 }
 933
 934 /* Memory allocated for attributes by this function should be freed by
 935  * mspro_block_data_clear, no matter if the initialization process succeded
 936  * or failed.
 937  */
 938 static int mspro_block_read_attributes(struct memstick_dev *card)
 939 {
 940         struct mspro_block_data *msb = memstick_get_drvdata(card);
 941         struct mspro_param_register param = {
 942                 .system = msb->system,
 943                 .data_count = cpu_to_be16(1),
 944                 .data_address = 0,
 945                 .tpc_param = 0
 946         };
 947         struct mspro_attribute *attr = NULL;
 948         struct mspro_sys_attr *s_attr = NULL;
 949         unsigned char *buffer = NULL;
 950         int cnt, rc, attr_count;
 951         unsigned int addr;
 952         unsigned short page_count;
 953
 954         attr = kmalloc(msb->page_size, GFP_KERNEL);
 955         if (!attr)
 956                 return -ENOMEM;
 957
 958         sg_init_one(&msb->req_sg[0], attr, msb->page_size);
 959         msb->seg_count = 1;
 960         msb->current_seg = 0;
 961         msb->current_page = 0;
 962         msb->data_dir = READ;
 963         msb->transfer_cmd = MSPRO_CMD_READ_ATRB;
 964
 965         card->next_request = h_mspro_block_req_init;
 966         msb->mrq_handler = h_mspro_block_transfer_data;
 967         memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, &param,
 968                           sizeof(param));
 969         memstick_new_req(card->host);
 970         wait_for_completion(&card->mrq_complete);
 971         if (card->current_mrq.error) {
 972                 rc = card->current_mrq.error;
 973                 goto out_free_attr;
 974         }
 975
 976         if (be16_to_cpu(attr->signature) != MSPRO_BLOCK_SIGNATURE) {
 977                 printk(KERN_ERR "%s: unrecognized device signature %x\n",
 978                        card->dev.bus_id, be16_to_cpu(attr->signature));
 979                 rc = -ENODEV;
 980                 goto out_free_attr;
 981         }
 982
 983         if (attr->count > MSPRO_BLOCK_MAX_ATTRIBUTES) {
 984                 printk(KERN_WARNING "%s: way too many attribute entries\n",
 985                        card->dev.bus_id);
 986                 attr_count = MSPRO_BLOCK_MAX_ATTRIBUTES;
 987         } else
 988                 attr_count = attr->count;
 989
 990         msb->attr_group.attrs = kzalloc((attr_count + 1)
 991                                         * sizeof(struct attribute),
 992                                         GFP_KERNEL);
 993         if (!msb->attr_group.attrs) {
 994                 rc = -ENOMEM;
 995                 goto out_free_attr;
 996         }
 997         msb->attr_group.name = "media_attributes";
 998
 999         buffer = kmalloc(msb->page_size, GFP_KERNEL);
1000         if (!buffer) {
1001                 rc = -ENOMEM;
1002                 goto out_free_attr;
1003         }
1004         memcpy(buffer, (char *)attr, msb->page_size);
1005         page_count = 1;
1006
1007         for (cnt = 0; cnt < attr_count; ++cnt) {
1008                 s_attr = kzalloc(sizeof(struct mspro_sys_attr), GFP_KERNEL);
1009                 if (!s_attr) {
1010                         rc = -ENOMEM;
1011                         goto out_free_buffer;
1012                 }
1013
1014                 msb->attr_group.attrs[cnt] = &s_attr->dev_attr.attr;
1015                 addr = be32_to_cpu(attr->entries[cnt].address);
1016                 rc = be32_to_cpu(attr->entries[cnt].size);
1017                 dev_dbg(&card->dev, "adding attribute %d: id %x, address %x, "
1018                         "size %x\n", cnt, attr->entries[cnt].id, addr, rc);
1019                 s_attr->id = attr->entries[cnt].id;
1020                 if (mspro_block_attr_name(s_attr->id))
1021                         snprintf(s_attr->name, sizeof(s_attr->name), "%s",
1022                                  mspro_block_attr_name(attr->entries[cnt].id));
1023                 else
1024                         snprintf(s_attr->name, sizeof(s_attr->name),
1025                                  "attr_x%02x", attr->entries[cnt].id);
1026
1027                 s_attr->dev_attr.attr.name = s_attr->name;
1028                 s_attr->dev_attr.attr.mode = S_IRUGO;
1029                 s_attr->dev_attr.attr.owner = THIS_MODULE;
1030                 s_attr->dev_attr.show = mspro_block_attr_show(s_attr->id);
1031
1032                 if (!rc)
1033                         continue;
1034
1035                 s_attr->size = rc;
1036                 s_attr->data = kmalloc(rc, GFP_KERNEL);
1037                 if (!s_attr->data) {
1038                         rc = -ENOMEM;
1039                         goto out_free_buffer;
1040                 }
1041
1042                 if (((addr / msb->page_size)
1043                      == be32_to_cpu(param.data_address))
1044                     && (((addr + rc - 1) / msb->page_size)
1045                         == be32_to_cpu(param.data_address))) {
1046                         memcpy(s_attr->data, buffer + addr % msb->page_size,
1047                                rc);
1048                         continue;
1049                 }
1050
1051                 if (page_count <= (rc / msb->page_size)) {
1052                         kfree(buffer);
1053                         page_count = (rc / msb->page_size) + 1;
1054                         buffer = kmalloc(page_count * msb->page_size,
1055                                          GFP_KERNEL);
1056                         if (!buffer) {
1057                                 rc = -ENOMEM;
1058                                 goto out_free_attr;
1059                         }
1060                 }
1061
1062                 param.system = msb->system;
1063                 param.data_count = cpu_to_be16((rc / msb->page_size) + 1);
1064                 param.data_address = cpu_to_be32(addr / msb->page_size);
1065                 param.tpc_param = 0;
1066
1067                 sg_init_one(&msb->req_sg[0], buffer,
1068                             be16_to_cpu(param.data_count) * msb->page_size);
1069                 msb->seg_count = 1;
1070                 msb->current_seg = 0;
1071                 msb->current_page = 0;
1072                 msb->data_dir = READ;
1073                 msb->transfer_cmd = MSPRO_CMD_READ_ATRB;
1074
1075                 dev_dbg(&card->dev, "reading attribute pages %x, %x\n",
1076                         be32_to_cpu(param.data_address),
1077                         be16_to_cpu(param.data_count));
1078
1079                 card->next_request = h_mspro_block_req_init;
1080                 msb->mrq_handler = h_mspro_block_transfer_data;
1081                 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG,
1082                                   (char *)&param, sizeof(param));
1083                 memstick_new_req(card->host);
1084                 wait_for_completion(&card->mrq_complete);
1085                 if (card->current_mrq.error) {
1086                         rc = card->current_mrq.error;
1087                         goto out_free_buffer;
1088                 }
1089
1090                 memcpy(s_attr->data, buffer + addr % msb->page_size, rc);
1091         }
1092
1093         rc = 0;
1094 out_free_buffer:
1095         kfree(buffer);
1096 out_free_attr:
1097         kfree(attr);
1098         return rc;
1099 }
1100
1101 static int mspro_block_init_card(struct memstick_dev *card)
1102 {
1103         struct mspro_block_data *msb = memstick_get_drvdata(card);
1104         struct memstick_host *host = card->host;
1105         int rc = 0;
1106
1107         msb->system = MEMSTICK_SYS_SERIAL;
1108         card->reg_addr.r_offset = offsetof(struct mspro_register, status);
1109         card->reg_addr.r_length = sizeof(struct ms_status_register);
1110         card->reg_addr.w_offset = offsetof(struct mspro_register, param);
1111         card->reg_addr.w_length = sizeof(struct mspro_param_register);
1112
1113         if (memstick_set_rw_addr(card))
1114                 return -EIO;
1115
1116         msb->caps = host->caps;
1117         rc = mspro_block_switch_interface(card);
1118         if (rc)
1119                 return rc;
1120
1121         msleep(200);
1122         rc = mspro_block_wait_for_ced(card);
1123         if (rc)
1124                 return rc;
1125         dev_dbg(&card->dev, "card activated\n");
1126         if (msb->system != MEMSTICK_SYS_SERIAL)
1127                 msb->caps |= MEMSTICK_CAP_AUTO_GET_INT;
1128
1129         card->next_request = h_mspro_block_req_init;
1130         msb->mrq_handler = h_mspro_block_get_ro;
1131         memstick_init_req(&card->current_mrq, MS_TPC_READ_REG, NULL,
1132                           sizeof(struct ms_status_register));
1133         memstick_new_req(card->host);
1134         wait_for_completion(&card->mrq_complete);
1135         if (card->current_mrq.error)
1136                 return card->current_mrq.error;
1137
1138         dev_dbg(&card->dev, "card r/w status %d\n", msb->read_only ? 0 : 1);
1139
1140         msb->page_size = 512;
1141         rc = mspro_block_read_attributes(card);
1142         if (rc)
1143                 return rc;
1144
1145         dev_dbg(&card->dev, "attributes loaded\n");
1146         return 0;
1147
1148 }
1149
1150 static int mspro_block_init_disk(struct memstick_dev *card)
1151 {
1152         struct mspro_block_data *msb = memstick_get_drvdata(card);
1153         struct memstick_host *host = card->host;
1154         struct mspro_devinfo *dev_info = NULL;
1155         struct mspro_sys_info *sys_info = NULL;
1156         struct mspro_sys_attr *s_attr = NULL;
1157         int rc, disk_id;
1158         u64 limit = BLK_BOUNCE_HIGH;
1159         unsigned long capacity;
1160
1161         if (host->dev.dma_mask && *(host->dev.dma_mask))
1162                 limit = *(host->dev.dma_mask);
1163
1164         for (rc = 0; msb->attr_group.attrs[rc]; ++rc) {
1165                 s_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[rc]);
1166
1167                 if (s_attr->id == MSPRO_BLOCK_ID_DEVINFO)
1168                         dev_info = s_attr->data;
1169                 else if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO)
1170                         sys_info = s_attr->data;
1171         }
1172
1173         if (!dev_info || !sys_info)
1174                 return -ENODEV;
1175
1176         msb->cylinders = be16_to_cpu(dev_info->cylinders);
1177         msb->heads = be16_to_cpu(dev_info->heads);
1178         msb->sectors_per_track = be16_to_cpu(dev_info->sectors_per_track);
1179
1180         msb->page_size = be16_to_cpu(sys_info->unit_size);
1181
1182         if (!idr_pre_get(&mspro_block_disk_idr, GFP_KERNEL))
1183                 return -ENOMEM;
1184
1185         mutex_lock(&mspro_block_disk_lock);
1186         rc = idr_get_new(&mspro_block_disk_idr, card, &disk_id);
1187         mutex_unlock(&mspro_block_disk_lock);
1188
1189         if (rc)
1190                 return rc;
1191
1192         if ((disk_id << MEMSTICK_PART_SHIFT) > 255) {
1193                 rc = -ENOSPC;
1194                 goto out_release_id;
1195         }
1196
1197         msb->disk = alloc_disk(1 << MEMSTICK_PART_SHIFT);
1198         if (!msb->disk) {
1199                 rc = -ENOMEM;
1200                 goto out_release_id;
1201         }
1202
1203         spin_lock_init(&msb->q_lock);
1204         init_waitqueue_head(&msb->q_wait);
1205
1206         msb->queue = blk_init_queue(mspro_block_request, &msb->q_lock);
1207         if (!msb->queue) {
1208                 rc = -ENOMEM;
1209                 goto out_put_disk;
1210         }
1211
1212         msb->queue->queuedata = card;
1213
1214         blk_queue_bounce_limit(msb->queue, limit);
1215         blk_queue_max_sectors(msb->queue, MSPRO_BLOCK_MAX_PAGES);
1216         blk_queue_max_phys_segments(msb->queue, MSPRO_BLOCK_MAX_SEGS);
1217         blk_queue_max_hw_segments(msb->queue, MSPRO_BLOCK_MAX_SEGS);
1218         blk_queue_max_segment_size(msb->queue,
1219                                    MSPRO_BLOCK_MAX_PAGES * msb->page_size);
1220
1221         msb->disk->major = major;
1222         msb->disk->first_minor = disk_id << MEMSTICK_PART_SHIFT;
1223         msb->disk->fops = &ms_block_bdops;
1224         msb->usage_count = 1;
1225         msb->disk->private_data = msb;
1226         msb->disk->queue = msb->queue;
1227         msb->disk->driverfs_dev = &card->dev;
1228
1229         sprintf(msb->disk->disk_name, "mspblk%d", disk_id);
1230
1231         blk_queue_hardsect_size(msb->queue, msb->page_size);
1232
1233         capacity = be16_to_cpu(sys_info->user_block_count);
1234         capacity *= be16_to_cpu(sys_info->block_size);
1235         capacity *= msb->page_size >> 9;
1236         set_capacity(msb->disk, capacity);
1237         dev_dbg(&card->dev, "capacity set %ld\n", capacity);
1238         msb->q_thread = kthread_run(mspro_block_queue_thread, card,
1239                                     DRIVER_NAME"d");
1240         if (IS_ERR(msb->q_thread))
1241                 goto out_put_disk;
1242
1243         mutex_unlock(&host->lock);
1244         add_disk(msb->disk);
1245         mutex_lock(&host->lock);
1246         msb->active = 1;
1247         return 0;
1248
1249 out_put_disk:
1250         put_disk(msb->disk);
1251 out_release_id:
1252         mutex_lock(&mspro_block_disk_lock);
1253         idr_remove(&mspro_block_disk_idr, disk_id);
1254         mutex_unlock(&mspro_block_disk_lock);
1255         return rc;
1256 }
1257
1258 static void mspro_block_data_clear(struct mspro_block_data *msb)
1259 {
1260         int cnt;
1261         struct mspro_sys_attr *s_attr;
1262
1263         if (msb->attr_group.attrs) {
1264                 for (cnt = 0; msb->attr_group.attrs[cnt]; ++cnt) {
1265                         s_attr = mspro_from_sysfs_attr(msb->attr_group
1266                                                            .attrs[cnt]);
1267                         kfree(s_attr->data);
1268                         kfree(s_attr);
1269                 }
1270                 kfree(msb->attr_group.attrs);
1271         }
1272
1273         msb->card = NULL;
1274 }
1275
1276 static int mspro_block_check_card(struct memstick_dev *card)
1277 {
1278         struct mspro_block_data *msb = memstick_get_drvdata(card);
1279
1280         return (msb->active == 1);
1281 }
1282
1283 static int mspro_block_probe(struct memstick_dev *card)
1284 {
1285         struct mspro_block_data *msb;
1286         int rc = 0;
1287
1288         msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL);
1289         if (!msb)
1290                 return -ENOMEM;
1291         memstick_set_drvdata(card, msb);
1292         msb->card = card;
1293
1294         rc = mspro_block_init_card(card);
1295
1296         if (rc)
1297                 goto out_free;
1298
1299         rc = sysfs_create_group(&card->dev.kobj, &msb->attr_group);
1300         if (rc)
1301                 goto out_free;
1302
1303         rc = mspro_block_init_disk(card);
1304         if (!rc) {
1305                 card->check = mspro_block_check_card;
1306                 card->stop = mspro_block_stop;
1307                 card->start = mspro_block_start;
1308                 return 0;
1309         }
1310
1311         sysfs_remove_group(&card->dev.kobj, &msb->attr_group);
1312 out_free:
1313         memstick_set_drvdata(card, NULL);
1314         mspro_block_data_clear(msb);
1315         kfree(msb);
1316         return rc;
1317 }
1318
1319 static void mspro_block_remove(struct memstick_dev *card)
1320 {
1321         struct mspro_block_data *msb = memstick_get_drvdata(card);
1322         struct task_struct *q_thread = NULL;
1323         unsigned long flags;
1324
1325         del_gendisk(msb->disk);
1326         dev_dbg(&card->dev, "mspro block remove\n");
1327         spin_lock_irqsave(&msb->q_lock, flags);
1328         q_thread = msb->q_thread;
1329         msb->q_thread = NULL;
1330         msb->active = 0;
1331         spin_unlock_irqrestore(&msb->q_lock, flags);
1332
1333         if (q_thread) {
1334                 mutex_unlock(&card->host->lock);
1335                 kthread_stop(q_thread);
1336                 mutex_lock(&card->host->lock);
1337         }
1338
1339         dev_dbg(&card->dev, "queue thread stopped\n");
1340
1341         blk_cleanup_queue(msb->queue);
1342
1343         sysfs_remove_group(&card->dev.kobj, &msb->attr_group);
1344
1345         mutex_lock(&mspro_block_disk_lock);
1346         mspro_block_data_clear(msb);
1347         mutex_unlock(&mspro_block_disk_lock);
1348
1349         mspro_block_disk_release(msb->disk);
1350         memstick_set_drvdata(card, NULL);
1351 }
1352
1353 #ifdef CONFIG_PM
1354
1355 static int mspro_block_suspend(struct memstick_dev *card, pm_message_t state)
1356 {
1357         struct mspro_block_data *msb = memstick_get_drvdata(card);
1358         struct task_struct *q_thread = NULL;
1359         unsigned long flags;
1360
1361         spin_lock_irqsave(&msb->q_lock, flags);
1362         q_thread = msb->q_thread;
1363         msb->q_thread = NULL;
1364         msb->active = 0;
1365         blk_stop_queue(msb->queue);
1366         spin_unlock_irqrestore(&msb->q_lock, flags);
1367
1368         if (q_thread)
1369                 kthread_stop(q_thread);
1370
1371         return 0;
1372 }
1373
1374 static int mspro_block_resume(struct memstick_dev *card)
1375 {
1376         struct mspro_block_data *msb = memstick_get_drvdata(card);
1377         unsigned long flags;
1378         int rc = 0;
1379
1380 #ifdef CONFIG_MEMSTICK_UNSAFE_RESUME
1381
1382         struct mspro_block_data *new_msb;
1383         struct memstick_host *host = card->host;
1384         struct mspro_sys_attr *s_attr, *r_attr;
1385         unsigned char cnt;
1386
1387         mutex_lock(&host->lock);
1388         new_msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL);
1389         if (!new_msb) {
1390                 rc = -ENOMEM;
1391                 goto out_unlock;
1392         }
1393
1394         new_msb->card = card;
1395         memstick_set_drvdata(card, new_msb);
1396         if (mspro_block_init_card(card))
1397                 goto out_free;
1398
1399         for (cnt = 0; new_msb->attr_group.attrs[cnt]
1400                       && msb->attr_group.attrs[cnt]; ++cnt) {
1401                 s_attr = mspro_from_sysfs_attr(new_msb->attr_group.attrs[cnt]);
1402                 r_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[cnt]);
1403
1404                 if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO
1405                     && r_attr->id == s_attr->id) {
1406                         if (memcmp(s_attr->data, r_attr->data, s_attr->size))
1407                                 break;
1408
1409                         memstick_set_drvdata(card, msb);
1410                         msb->q_thread = kthread_run(mspro_block_queue_thread,
1411                                                     card, DRIVER_NAME"d");
1412                         if (IS_ERR(msb->q_thread))
1413                                 msb->q_thread = NULL;
1414                         else
1415                                 msb->active = 1;
1416
1417                         break;
1418                 }
1419         }
1420
1421 out_free:
1422         memstick_set_drvdata(card, msb);
1423         mspro_block_data_clear(new_msb);
1424         kfree(new_msb);
1425 out_unlock:
1426         mutex_unlock(&host->lock);
1427
1428 #endif /* CONFIG_MEMSTICK_UNSAFE_RESUME */
1429
1430         spin_lock_irqsave(&msb->q_lock, flags);
1431         blk_start_queue(msb->queue);
1432         spin_unlock_irqrestore(&msb->q_lock, flags);
1433         return rc;
1434 }
1435
1436 #else
1437
1438 #define mspro_block_suspend NULL
1439 #define mspro_block_resume NULL
1440
1441 #endif /* CONFIG_PM */
1442
1443 static struct memstick_device_id mspro_block_id_tbl[] = {
1444         {MEMSTICK_MATCH_ALL, MEMSTICK_TYPE_PRO, MEMSTICK_CATEGORY_STORAGE_DUO,
1445          MEMSTICK_CLASS_GENERIC_DUO},
1446         {}
1447 };
1448
1449
1450 static struct memstick_driver mspro_block_driver = {
1451         .driver = {
1452                 .name  = DRIVER_NAME,
1453                 .owner = THIS_MODULE
1454         },
1455         .id_table = mspro_block_id_tbl,
1456         .probe    = mspro_block_probe,
1457         .remove   = mspro_block_remove,
1458         .suspend  = mspro_block_suspend,
1459         .resume   = mspro_block_resume
1460 };
1461
1462 static int __init mspro_block_init(void)
1463 {
1464         int rc = -ENOMEM;
1465
1466         rc = register_blkdev(major, DRIVER_NAME);
1467         if (rc < 0) {
1468                 printk(KERN_ERR DRIVER_NAME ": failed to register "
1469                        "major %d, error %d\n", major, rc);
1470                 return rc;
1471         }
1472         if (!major)
1473                 major = rc;
1474
1475         rc = memstick_register_driver(&mspro_block_driver);
1476         if (rc)
1477                 unregister_blkdev(major, DRIVER_NAME);
1478         return rc;
1479 }
1480
1481 static void __exit mspro_block_exit(void)
1482 {
1483         memstick_unregister_driver(&mspro_block_driver);
1484         unregister_blkdev(major, DRIVER_NAME);
1485         idr_destroy(&mspro_block_disk_idr);
1486 }
1487
1488 module_init(mspro_block_init);
1489 module_exit(mspro_block_exit);
1490
1491 MODULE_LICENSE("GPL");
1492 MODULE_AUTHOR("Alex Dubov");
1493 MODULE_DESCRIPTION("Sony MemoryStickPro block device driver");
1494 MODULE_DEVICE_TABLE(memstick, mspro_block_id_tbl);