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 __be32 address; 56 __be32 size; 57 unsigned char id; 58 unsigned char reserved[3]; 59 } __attribute__((packed)); 60 61 struct mspro_attribute { 62 __be16 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 __be16 block_size; 73 __be16 block_count; 74 __be16 user_block_count; 75 __be16 page_size; 76 unsigned char reserved1[2]; 77 unsigned char assembly_date[8]; 78 __be32 serial_number; 79 unsigned char assembly_maker_code; 80 unsigned char assembly_model_code[3]; 81 __be16 memory_maker_code; 82 __be16 memory_model_code; 83 unsigned char reserved2[4]; 84 unsigned char vcc; 85 unsigned char vpp; 86 __be16 controller_number; 87 __be16 controller_function; 88 __be16 start_sector; 89 __be16 unit_size; 90 unsigned char ms_sub_class; 91 unsigned char reserved3[4]; 92 unsigned char interface_type; 93 __be16 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 __be16 cylinders; 128 __be16 heads; 129 __be16 bytes_per_track; 130 __be16 bytes_per_sector; 131 __be16 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 block_device *bdev, fmode_t mode) 176 { 177 struct gendisk *disk = 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 ((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 gendisk *disk, fmode_t mode) 222 { 223 return mspro_block_disk_release(disk); 224 } 225 226 static int mspro_block_bd_getgeo(struct block_device *bdev, 227 struct hd_geometry *geo) 228 { 229 struct mspro_block_data *msb = bdev->bd_disk->private_data; 230 231 geo->heads = msb->heads; 232 geo->sectors = msb->sectors_per_track; 233 geo->cylinders = msb->cylinders; 234 235 return 0; 236 } 237 238 static struct block_device_operations ms_block_bdops = { 239 .open = mspro_block_bd_open, 240 .release = mspro_block_bd_release, 241 .getgeo = mspro_block_bd_getgeo, 242 .owner = THIS_MODULE 243 }; 244 245 /*** Information ***/ 246 247 static struct mspro_sys_attr *mspro_from_sysfs_attr(struct attribute *attr) 248 { 249 struct device_attribute *dev_attr 250 = container_of(attr, struct device_attribute, attr); 251 return container_of(dev_attr, struct mspro_sys_attr, dev_attr); 252 } 253 254 static const char *mspro_block_attr_name(unsigned char tag) 255 { 256 switch (tag) { 257 case MSPRO_BLOCK_ID_SYSINFO: 258 return "attr_sysinfo"; 259 case MSPRO_BLOCK_ID_MODELNAME: 260 return "attr_modelname"; 261 case MSPRO_BLOCK_ID_MBR: 262 return "attr_mbr"; 263 case MSPRO_BLOCK_ID_PBR16: 264 return "attr_pbr16"; 265 case MSPRO_BLOCK_ID_PBR32: 266 return "attr_pbr32"; 267 case MSPRO_BLOCK_ID_SPECFILEVALUES1: 268 return "attr_specfilevalues1"; 269 case MSPRO_BLOCK_ID_SPECFILEVALUES2: 270 return "attr_specfilevalues2"; 271 case MSPRO_BLOCK_ID_DEVINFO: 272 return "attr_devinfo"; 273 default: 274 return NULL; 275 }; 276 } 277 278 typedef ssize_t (*sysfs_show_t)(struct device *dev, 279 struct device_attribute *attr, 280 char *buffer); 281 282 static ssize_t mspro_block_attr_show_default(struct device *dev, 283 struct device_attribute *attr, 284 char *buffer) 285 { 286 struct mspro_sys_attr *s_attr = container_of(attr, 287 struct mspro_sys_attr, 288 dev_attr); 289 290 ssize_t cnt, rc = 0; 291 292 for (cnt = 0; cnt < s_attr->size; cnt++) { 293 if (cnt && !(cnt % 16)) { 294 if (PAGE_SIZE - rc) 295 buffer[rc++] = '\n'; 296 } 297 298 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "%02x ", 299 ((unsigned char *)s_attr->data)[cnt]); 300 } 301 return rc; 302 } 303 304 static ssize_t mspro_block_attr_show_sysinfo(struct device *dev, 305 struct device_attribute *attr, 306 char *buffer) 307 { 308 struct mspro_sys_attr *x_attr = container_of(attr, 309 struct mspro_sys_attr, 310 dev_attr); 311 struct mspro_sys_info *x_sys = x_attr->data; 312 ssize_t rc = 0; 313 int date_tz = 0, date_tz_f = 0; 314 315 if (x_sys->assembly_date[0] > 0x80U) { 316 date_tz = (~x_sys->assembly_date[0]) + 1; 317 date_tz_f = date_tz & 3; 318 date_tz >>= 2; 319 date_tz = -date_tz; 320 date_tz_f *= 15; 321 } else if (x_sys->assembly_date[0] < 0x80U) { 322 date_tz = x_sys->assembly_date[0]; 323 date_tz_f = date_tz & 3; 324 date_tz >>= 2; 325 date_tz_f *= 15; 326 } 327 328 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "class: %x\n", 329 x_sys->class); 330 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "block size: %x\n", 331 be16_to_cpu(x_sys->block_size)); 332 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "block count: %x\n", 333 be16_to_cpu(x_sys->block_count)); 334 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "user block count: %x\n", 335 be16_to_cpu(x_sys->user_block_count)); 336 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "page size: %x\n", 337 be16_to_cpu(x_sys->page_size)); 338 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "assembly date: " 339 "GMT%+d:%d %04u-%02u-%02u %02u:%02u:%02u\n", 340 date_tz, date_tz_f, 341 be16_to_cpup((__be16 *)&x_sys->assembly_date[1]), 342 x_sys->assembly_date[3], x_sys->assembly_date[4], 343 x_sys->assembly_date[5], x_sys->assembly_date[6], 344 x_sys->assembly_date[7]); 345 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "serial number: %x\n", 346 be32_to_cpu(x_sys->serial_number)); 347 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, 348 "assembly maker code: %x\n", 349 x_sys->assembly_maker_code); 350 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "assembly model code: " 351 "%02x%02x%02x\n", x_sys->assembly_model_code[0], 352 x_sys->assembly_model_code[1], 353 x_sys->assembly_model_code[2]); 354 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "memory maker code: %x\n", 355 be16_to_cpu(x_sys->memory_maker_code)); 356 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "memory model code: %x\n", 357 be16_to_cpu(x_sys->memory_model_code)); 358 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "vcc: %x\n", 359 x_sys->vcc); 360 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "vpp: %x\n", 361 x_sys->vpp); 362 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "controller number: %x\n", 363 be16_to_cpu(x_sys->controller_number)); 364 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, 365 "controller function: %x\n", 366 be16_to_cpu(x_sys->controller_function)); 367 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sector: %x\n", 368 be16_to_cpu(x_sys->start_sector)); 369 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "unit size: %x\n", 370 be16_to_cpu(x_sys->unit_size)); 371 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "sub class: %x\n", 372 x_sys->ms_sub_class); 373 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "interface type: %x\n", 374 x_sys->interface_type); 375 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "controller code: %x\n", 376 be16_to_cpu(x_sys->controller_code)); 377 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "format type: %x\n", 378 x_sys->format_type); 379 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "device type: %x\n", 380 x_sys->device_type); 381 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "mspro id: %s\n", 382 x_sys->mspro_id); 383 return rc; 384 } 385 386 static ssize_t mspro_block_attr_show_modelname(struct device *dev, 387 struct device_attribute *attr, 388 char *buffer) 389 { 390 struct mspro_sys_attr *s_attr = container_of(attr, 391 struct mspro_sys_attr, 392 dev_attr); 393 394 return scnprintf(buffer, PAGE_SIZE, "%s", (char *)s_attr->data); 395 } 396 397 static ssize_t mspro_block_attr_show_mbr(struct device *dev, 398 struct device_attribute *attr, 399 char *buffer) 400 { 401 struct mspro_sys_attr *x_attr = container_of(attr, 402 struct mspro_sys_attr, 403 dev_attr); 404 struct mspro_mbr *x_mbr = x_attr->data; 405 ssize_t rc = 0; 406 407 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "boot partition: %x\n", 408 x_mbr->boot_partition); 409 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start head: %x\n", 410 x_mbr->start_head); 411 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sector: %x\n", 412 x_mbr->start_sector); 413 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start cylinder: %x\n", 414 x_mbr->start_cylinder); 415 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "partition type: %x\n", 416 x_mbr->partition_type); 417 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end head: %x\n", 418 x_mbr->end_head); 419 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end sector: %x\n", 420 x_mbr->end_sector); 421 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end cylinder: %x\n", 422 x_mbr->end_cylinder); 423 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sectors: %x\n", 424 x_mbr->start_sectors); 425 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, 426 "sectors per partition: %x\n", 427 x_mbr->sectors_per_partition); 428 return rc; 429 } 430 431 static ssize_t mspro_block_attr_show_specfile(struct device *dev, 432 struct device_attribute *attr, 433 char *buffer) 434 { 435 struct mspro_sys_attr *x_attr = container_of(attr, 436 struct mspro_sys_attr, 437 dev_attr); 438 struct mspro_specfile *x_spfile = x_attr->data; 439 char name[9], ext[4]; 440 ssize_t rc = 0; 441 442 memcpy(name, x_spfile->name, 8); 443 name[8] = 0; 444 memcpy(ext, x_spfile->ext, 3); 445 ext[3] = 0; 446 447 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "name: %s\n", name); 448 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "ext: %s\n", ext); 449 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "attribute: %x\n", 450 x_spfile->attr); 451 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "time: %d:%d:%d\n", 452 x_spfile->time >> 11, 453 (x_spfile->time >> 5) & 0x3f, 454 (x_spfile->time & 0x1f) * 2); 455 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "date: %d-%d-%d\n", 456 (x_spfile->date >> 9) + 1980, 457 (x_spfile->date >> 5) & 0xf, 458 x_spfile->date & 0x1f); 459 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start cluster: %x\n", 460 x_spfile->cluster); 461 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "size: %x\n", 462 x_spfile->size); 463 return rc; 464 } 465 466 static ssize_t mspro_block_attr_show_devinfo(struct device *dev, 467 struct device_attribute *attr, 468 char *buffer) 469 { 470 struct mspro_sys_attr *x_attr = container_of(attr, 471 struct mspro_sys_attr, 472 dev_attr); 473 struct mspro_devinfo *x_devinfo = x_attr->data; 474 ssize_t rc = 0; 475 476 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "cylinders: %x\n", 477 be16_to_cpu(x_devinfo->cylinders)); 478 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "heads: %x\n", 479 be16_to_cpu(x_devinfo->heads)); 480 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "bytes per track: %x\n", 481 be16_to_cpu(x_devinfo->bytes_per_track)); 482 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "bytes per sector: %x\n", 483 be16_to_cpu(x_devinfo->bytes_per_sector)); 484 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "sectors per track: %x\n", 485 be16_to_cpu(x_devinfo->sectors_per_track)); 486 return rc; 487 } 488 489 static sysfs_show_t mspro_block_attr_show(unsigned char tag) 490 { 491 switch (tag) { 492 case MSPRO_BLOCK_ID_SYSINFO: 493 return mspro_block_attr_show_sysinfo; 494 case MSPRO_BLOCK_ID_MODELNAME: 495 return mspro_block_attr_show_modelname; 496 case MSPRO_BLOCK_ID_MBR: 497 return mspro_block_attr_show_mbr; 498 case MSPRO_BLOCK_ID_SPECFILEVALUES1: 499 case MSPRO_BLOCK_ID_SPECFILEVALUES2: 500 return mspro_block_attr_show_specfile; 501 case MSPRO_BLOCK_ID_DEVINFO: 502 return mspro_block_attr_show_devinfo; 503 default: 504 return mspro_block_attr_show_default; 505 } 506 } 507 508 /*** Protocol handlers ***/ 509 510 /* 511 * Functions prefixed with "h_" are protocol callbacks. They can be called from 512 * interrupt context. Return value of 0 means that request processing is still 513 * ongoing, while special error value of -EAGAIN means that current request is 514 * finished (and request processor should come back some time later). 515 */ 516 517 static int h_mspro_block_req_init(struct memstick_dev *card, 518 struct memstick_request **mrq) 519 { 520 struct mspro_block_data *msb = memstick_get_drvdata(card); 521 522 *mrq = &card->current_mrq; 523 card->next_request = msb->mrq_handler; 524 return 0; 525 } 526 527 static int h_mspro_block_default(struct memstick_dev *card, 528 struct memstick_request **mrq) 529 { 530 return mspro_block_complete_req(card, (*mrq)->error); 531 } 532 533 static int h_mspro_block_default_bad(struct memstick_dev *card, 534 struct memstick_request **mrq) 535 { 536 return -ENXIO; 537 } 538 539 static int h_mspro_block_get_ro(struct memstick_dev *card, 540 struct memstick_request **mrq) 541 { 542 struct mspro_block_data *msb = memstick_get_drvdata(card); 543 544 if (!(*mrq)->error) { 545 if ((*mrq)->data[offsetof(struct ms_status_register, status0)] 546 & MEMSTICK_STATUS0_WP) 547 msb->read_only = 1; 548 else 549 msb->read_only = 0; 550 } 551 552 return mspro_block_complete_req(card, (*mrq)->error); 553 } 554 555 static int h_mspro_block_wait_for_ced(struct memstick_dev *card, 556 struct memstick_request **mrq) 557 { 558 dev_dbg(&card->dev, "wait for ced: value %x\n", (*mrq)->data[0]); 559 560 if (!(*mrq)->error) { 561 if ((*mrq)->data[0] & (MEMSTICK_INT_CMDNAK | MEMSTICK_INT_ERR)) 562 (*mrq)->error = -EFAULT; 563 else if (!((*mrq)->data[0] & MEMSTICK_INT_CED)) 564 return 0; 565 } 566 567 return mspro_block_complete_req(card, (*mrq)->error); 568 } 569 570 static int h_mspro_block_transfer_data(struct memstick_dev *card, 571 struct memstick_request **mrq) 572 { 573 struct mspro_block_data *msb = memstick_get_drvdata(card); 574 unsigned char t_val = 0; 575 struct scatterlist t_sg = { 0 }; 576 size_t t_offset; 577 578 if ((*mrq)->error) 579 return mspro_block_complete_req(card, (*mrq)->error); 580 581 switch ((*mrq)->tpc) { 582 case MS_TPC_WRITE_REG: 583 memstick_init_req(*mrq, MS_TPC_SET_CMD, &msb->transfer_cmd, 1); 584 (*mrq)->need_card_int = 1; 585 return 0; 586 case MS_TPC_SET_CMD: 587 t_val = (*mrq)->int_reg; 588 memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1); 589 if (msb->caps & MEMSTICK_CAP_AUTO_GET_INT) 590 goto has_int_reg; 591 return 0; 592 case MS_TPC_GET_INT: 593 t_val = (*mrq)->data[0]; 594 has_int_reg: 595 if (t_val & (MEMSTICK_INT_CMDNAK | MEMSTICK_INT_ERR)) { 596 t_val = MSPRO_CMD_STOP; 597 memstick_init_req(*mrq, MS_TPC_SET_CMD, &t_val, 1); 598 card->next_request = h_mspro_block_default; 599 return 0; 600 } 601 602 if (msb->current_page 603 == (msb->req_sg[msb->current_seg].length 604 / msb->page_size)) { 605 msb->current_page = 0; 606 msb->current_seg++; 607 608 if (msb->current_seg == msb->seg_count) { 609 if (t_val & MEMSTICK_INT_CED) { 610 return mspro_block_complete_req(card, 611 0); 612 } else { 613 card->next_request 614 = h_mspro_block_wait_for_ced; 615 memstick_init_req(*mrq, MS_TPC_GET_INT, 616 NULL, 1); 617 return 0; 618 } 619 } 620 } 621 622 if (!(t_val & MEMSTICK_INT_BREQ)) { 623 memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1); 624 return 0; 625 } 626 627 t_offset = msb->req_sg[msb->current_seg].offset; 628 t_offset += msb->current_page * msb->page_size; 629 630 sg_set_page(&t_sg, 631 nth_page(sg_page(&(msb->req_sg[msb->current_seg])), 632 t_offset >> PAGE_SHIFT), 633 msb->page_size, offset_in_page(t_offset)); 634 635 memstick_init_req_sg(*mrq, msb->data_dir == READ 636 ? MS_TPC_READ_LONG_DATA 637 : MS_TPC_WRITE_LONG_DATA, 638 &t_sg); 639 (*mrq)->need_card_int = 1; 640 return 0; 641 case MS_TPC_READ_LONG_DATA: 642 case MS_TPC_WRITE_LONG_DATA: 643 msb->current_page++; 644 if (msb->caps & MEMSTICK_CAP_AUTO_GET_INT) { 645 t_val = (*mrq)->int_reg; 646 goto has_int_reg; 647 } else { 648 memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1); 649 return 0; 650 } 651 652 default: 653 BUG(); 654 } 655 } 656 657 /*** Data transfer ***/ 658 659 static int mspro_block_issue_req(struct memstick_dev *card, int chunk) 660 { 661 struct mspro_block_data *msb = memstick_get_drvdata(card); 662 sector_t t_sec; 663 unsigned int count; 664 struct mspro_param_register param; 665 666 try_again: 667 while (chunk) { 668 msb->current_page = 0; 669 msb->current_seg = 0; 670 msb->seg_count = blk_rq_map_sg(msb->block_req->q, 671 msb->block_req, 672 msb->req_sg); 673 674 if (!msb->seg_count) { 675 chunk = __blk_end_request(msb->block_req, -ENOMEM, 676 blk_rq_cur_bytes(msb->block_req)); 677 continue; 678 } 679 680 t_sec = msb->block_req->sector << 9; 681 sector_div(t_sec, msb->page_size); 682 683 count = msb->block_req->nr_sectors << 9; 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, "elv_next\n"); 709 msb->block_req = elv_next_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 = msb->block_req->nr_sectors << 9; 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 = elv_next_request(q)) != NULL) 829 __blk_end_request(req, -ENODEV, blk_rq_bytes(req)); 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_sectors(msb->queue, MSPRO_BLOCK_MAX_PAGES); 1231 blk_queue_max_phys_segments(msb->queue, MSPRO_BLOCK_MAX_SEGS); 1232 blk_queue_max_hw_segments(msb->queue, MSPRO_BLOCK_MAX_SEGS); 1233 blk_queue_max_segment_size(msb->queue, 1234 MSPRO_BLOCK_MAX_PAGES * msb->page_size); 1235 1236 msb->disk->major = major; 1237 msb->disk->first_minor = disk_id << MSPRO_BLOCK_PART_SHIFT; 1238 msb->disk->fops = &ms_block_bdops; 1239 msb->usage_count = 1; 1240 msb->disk->private_data = msb; 1241 msb->disk->queue = msb->queue; 1242 msb->disk->driverfs_dev = &card->dev; 1243 1244 sprintf(msb->disk->disk_name, "mspblk%d", disk_id); 1245 1246 blk_queue_hardsect_size(msb->queue, msb->page_size); 1247 1248 capacity = be16_to_cpu(sys_info->user_block_count); 1249 capacity *= be16_to_cpu(sys_info->block_size); 1250 capacity *= msb->page_size >> 9; 1251 set_capacity(msb->disk, capacity); 1252 dev_dbg(&card->dev, "capacity set %ld\n", capacity); 1253 1254 add_disk(msb->disk); 1255 msb->active = 1; 1256 return 0; 1257 1258 out_put_disk: 1259 put_disk(msb->disk); 1260 out_release_id: 1261 mutex_lock(&mspro_block_disk_lock); 1262 idr_remove(&mspro_block_disk_idr, disk_id); 1263 mutex_unlock(&mspro_block_disk_lock); 1264 return rc; 1265 } 1266 1267 static void mspro_block_data_clear(struct mspro_block_data *msb) 1268 { 1269 int cnt; 1270 struct mspro_sys_attr *s_attr; 1271 1272 if (msb->attr_group.attrs) { 1273 for (cnt = 0; msb->attr_group.attrs[cnt]; ++cnt) { 1274 s_attr = mspro_from_sysfs_attr(msb->attr_group 1275 .attrs[cnt]); 1276 kfree(s_attr->data); 1277 kfree(s_attr); 1278 } 1279 kfree(msb->attr_group.attrs); 1280 } 1281 1282 msb->card = NULL; 1283 } 1284 1285 static int mspro_block_check_card(struct memstick_dev *card) 1286 { 1287 struct mspro_block_data *msb = memstick_get_drvdata(card); 1288 1289 return (msb->active == 1); 1290 } 1291 1292 static int mspro_block_probe(struct memstick_dev *card) 1293 { 1294 struct mspro_block_data *msb; 1295 int rc = 0; 1296 1297 msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL); 1298 if (!msb) 1299 return -ENOMEM; 1300 memstick_set_drvdata(card, msb); 1301 msb->card = card; 1302 spin_lock_init(&msb->q_lock); 1303 1304 rc = mspro_block_init_card(card); 1305 1306 if (rc) 1307 goto out_free; 1308 1309 rc = sysfs_create_group(&card->dev.kobj, &msb->attr_group); 1310 if (rc) 1311 goto out_free; 1312 1313 rc = mspro_block_init_disk(card); 1314 if (!rc) { 1315 card->check = mspro_block_check_card; 1316 card->stop = mspro_block_stop; 1317 card->start = mspro_block_start; 1318 return 0; 1319 } 1320 1321 sysfs_remove_group(&card->dev.kobj, &msb->attr_group); 1322 out_free: 1323 memstick_set_drvdata(card, NULL); 1324 mspro_block_data_clear(msb); 1325 kfree(msb); 1326 return rc; 1327 } 1328 1329 static void mspro_block_remove(struct memstick_dev *card) 1330 { 1331 struct mspro_block_data *msb = memstick_get_drvdata(card); 1332 unsigned long flags; 1333 1334 del_gendisk(msb->disk); 1335 dev_dbg(&card->dev, "mspro block remove\n"); 1336 spin_lock_irqsave(&msb->q_lock, flags); 1337 msb->eject = 1; 1338 blk_start_queue(msb->queue); 1339 spin_unlock_irqrestore(&msb->q_lock, flags); 1340 1341 blk_cleanup_queue(msb->queue); 1342 msb->queue = NULL; 1343 1344 sysfs_remove_group(&card->dev.kobj, &msb->attr_group); 1345 1346 mutex_lock(&mspro_block_disk_lock); 1347 mspro_block_data_clear(msb); 1348 mutex_unlock(&mspro_block_disk_lock); 1349 1350 mspro_block_disk_release(msb->disk); 1351 memstick_set_drvdata(card, NULL); 1352 } 1353 1354 #ifdef CONFIG_PM 1355 1356 static int mspro_block_suspend(struct memstick_dev *card, pm_message_t state) 1357 { 1358 struct mspro_block_data *msb = memstick_get_drvdata(card); 1359 unsigned long flags; 1360 1361 spin_lock_irqsave(&msb->q_lock, flags); 1362 blk_stop_queue(msb->queue); 1363 msb->active = 0; 1364 spin_unlock_irqrestore(&msb->q_lock, flags); 1365 1366 return 0; 1367 } 1368 1369 static int mspro_block_resume(struct memstick_dev *card) 1370 { 1371 struct mspro_block_data *msb = memstick_get_drvdata(card); 1372 unsigned long flags; 1373 int rc = 0; 1374 1375 #ifdef CONFIG_MEMSTICK_UNSAFE_RESUME 1376 1377 struct mspro_block_data *new_msb; 1378 struct memstick_host *host = card->host; 1379 struct mspro_sys_attr *s_attr, *r_attr; 1380 unsigned char cnt; 1381 1382 mutex_lock(&host->lock); 1383 new_msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL); 1384 if (!new_msb) { 1385 rc = -ENOMEM; 1386 goto out_unlock; 1387 } 1388 1389 new_msb->card = card; 1390 memstick_set_drvdata(card, new_msb); 1391 if (mspro_block_init_card(card)) 1392 goto out_free; 1393 1394 for (cnt = 0; new_msb->attr_group.attrs[cnt] 1395 && msb->attr_group.attrs[cnt]; ++cnt) { 1396 s_attr = mspro_from_sysfs_attr(new_msb->attr_group.attrs[cnt]); 1397 r_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[cnt]); 1398 1399 if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO 1400 && r_attr->id == s_attr->id) { 1401 if (memcmp(s_attr->data, r_attr->data, s_attr->size)) 1402 break; 1403 1404 msb->active = 1; 1405 break; 1406 } 1407 } 1408 1409 out_free: 1410 memstick_set_drvdata(card, msb); 1411 mspro_block_data_clear(new_msb); 1412 kfree(new_msb); 1413 out_unlock: 1414 mutex_unlock(&host->lock); 1415 1416 #endif /* CONFIG_MEMSTICK_UNSAFE_RESUME */ 1417 1418 spin_lock_irqsave(&msb->q_lock, flags); 1419 blk_start_queue(msb->queue); 1420 spin_unlock_irqrestore(&msb->q_lock, flags); 1421 return rc; 1422 } 1423 1424 #else 1425 1426 #define mspro_block_suspend NULL 1427 #define mspro_block_resume NULL 1428 1429 #endif /* CONFIG_PM */ 1430 1431 static struct memstick_device_id mspro_block_id_tbl[] = { 1432 {MEMSTICK_MATCH_ALL, MEMSTICK_TYPE_PRO, MEMSTICK_CATEGORY_STORAGE_DUO, 1433 MEMSTICK_CLASS_DUO}, 1434 {} 1435 }; 1436 1437 1438 static struct memstick_driver mspro_block_driver = { 1439 .driver = { 1440 .name = DRIVER_NAME, 1441 .owner = THIS_MODULE 1442 }, 1443 .id_table = mspro_block_id_tbl, 1444 .probe = mspro_block_probe, 1445 .remove = mspro_block_remove, 1446 .suspend = mspro_block_suspend, 1447 .resume = mspro_block_resume 1448 }; 1449 1450 static int __init mspro_block_init(void) 1451 { 1452 int rc = -ENOMEM; 1453 1454 rc = register_blkdev(major, DRIVER_NAME); 1455 if (rc < 0) { 1456 printk(KERN_ERR DRIVER_NAME ": failed to register " 1457 "major %d, error %d\n", major, rc); 1458 return rc; 1459 } 1460 if (!major) 1461 major = rc; 1462 1463 rc = memstick_register_driver(&mspro_block_driver); 1464 if (rc) 1465 unregister_blkdev(major, DRIVER_NAME); 1466 return rc; 1467 } 1468 1469 static void __exit mspro_block_exit(void) 1470 { 1471 memstick_unregister_driver(&mspro_block_driver); 1472 unregister_blkdev(major, DRIVER_NAME); 1473 idr_destroy(&mspro_block_disk_idr); 1474 } 1475 1476 module_init(mspro_block_init); 1477 module_exit(mspro_block_exit); 1478 1479 MODULE_LICENSE("GPL"); 1480 MODULE_AUTHOR("Alex Dubov"); 1481 MODULE_DESCRIPTION("Sony MemoryStickPro block device driver"); 1482 MODULE_DEVICE_TABLE(memstick, mspro_block_id_tbl); 1483