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