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