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 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_cpu(*(unsigned short *) 342 &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(msb->block_req, -ENOMEM, 677 blk_rq_cur_bytes(msb->block_req)); 678 continue; 679 } 680 681 t_sec = msb->block_req->sector << 9; 682 sector_div(t_sec, msb->page_size); 683 684 count = msb->block_req->nr_sectors << 9; 685 count /= msb->page_size; 686 687 param.system = msb->system; 688 param.data_count = cpu_to_be16(count); 689 param.data_address = cpu_to_be32((uint32_t)t_sec); 690 param.tpc_param = 0; 691 692 msb->data_dir = rq_data_dir(msb->block_req); 693 msb->transfer_cmd = msb->data_dir == READ 694 ? MSPRO_CMD_READ_DATA 695 : MSPRO_CMD_WRITE_DATA; 696 697 dev_dbg(&card->dev, "data transfer: cmd %x, " 698 "lba %x, count %x\n", msb->transfer_cmd, 699 be32_to_cpu(param.data_address), count); 700 701 card->next_request = h_mspro_block_req_init; 702 msb->mrq_handler = h_mspro_block_transfer_data; 703 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, 704 ¶m, sizeof(param)); 705 memstick_new_req(card->host); 706 return 0; 707 } 708 709 dev_dbg(&card->dev, "elv_next\n"); 710 msb->block_req = elv_next_request(msb->queue); 711 if (!msb->block_req) { 712 dev_dbg(&card->dev, "issue end\n"); 713 return -EAGAIN; 714 } 715 716 dev_dbg(&card->dev, "trying again\n"); 717 chunk = 1; 718 goto try_again; 719 } 720 721 static int mspro_block_complete_req(struct memstick_dev *card, int error) 722 { 723 struct mspro_block_data *msb = memstick_get_drvdata(card); 724 int chunk, cnt; 725 unsigned int t_len = 0; 726 unsigned long flags; 727 728 spin_lock_irqsave(&msb->q_lock, flags); 729 dev_dbg(&card->dev, "complete %d, %d\n", msb->has_request ? 1 : 0, 730 error); 731 732 if (msb->has_request) { 733 /* Nothing to do - not really an error */ 734 if (error == -EAGAIN) 735 error = 0; 736 737 if (error || (card->current_mrq.tpc == MSPRO_CMD_STOP)) { 738 if (msb->data_dir == READ) { 739 for (cnt = 0; cnt < msb->current_seg; cnt++) 740 t_len += msb->req_sg[cnt].length 741 / msb->page_size; 742 743 if (msb->current_page) 744 t_len += msb->current_page - 1; 745 746 t_len *= msb->page_size; 747 } 748 } else 749 t_len = msb->block_req->nr_sectors << 9; 750 751 dev_dbg(&card->dev, "transferred %x (%d)\n", t_len, error); 752 753 if (error && !t_len) 754 t_len = blk_rq_cur_bytes(msb->block_req); 755 756 chunk = __blk_end_request(msb->block_req, error, t_len); 757 758 error = mspro_block_issue_req(card, chunk); 759 760 if (!error) 761 goto out; 762 else 763 msb->has_request = 0; 764 } else { 765 if (!error) 766 error = -EAGAIN; 767 } 768 769 card->next_request = h_mspro_block_default_bad; 770 complete_all(&card->mrq_complete); 771 out: 772 spin_unlock_irqrestore(&msb->q_lock, flags); 773 return error; 774 } 775 776 static void mspro_block_stop(struct memstick_dev *card) 777 { 778 struct mspro_block_data *msb = memstick_get_drvdata(card); 779 int rc = 0; 780 unsigned long flags; 781 782 while (1) { 783 spin_lock_irqsave(&msb->q_lock, flags); 784 if (!msb->has_request) { 785 blk_stop_queue(msb->queue); 786 rc = 1; 787 } 788 spin_unlock_irqrestore(&msb->q_lock, flags); 789 790 if (rc) 791 break; 792 793 wait_for_completion(&card->mrq_complete); 794 } 795 } 796 797 static void mspro_block_start(struct memstick_dev *card) 798 { 799 struct mspro_block_data *msb = memstick_get_drvdata(card); 800 unsigned long flags; 801 802 spin_lock_irqsave(&msb->q_lock, flags); 803 blk_start_queue(msb->queue); 804 spin_unlock_irqrestore(&msb->q_lock, flags); 805 } 806 807 static int mspro_block_prepare_req(struct request_queue *q, struct request *req) 808 { 809 if (!blk_fs_request(req) && !blk_pc_request(req)) { 810 blk_dump_rq_flags(req, "MSPro unsupported request"); 811 return BLKPREP_KILL; 812 } 813 814 req->cmd_flags |= REQ_DONTPREP; 815 816 return BLKPREP_OK; 817 } 818 819 static void mspro_block_submit_req(struct request_queue *q) 820 { 821 struct memstick_dev *card = q->queuedata; 822 struct mspro_block_data *msb = memstick_get_drvdata(card); 823 struct request *req = NULL; 824 825 if (msb->has_request) 826 return; 827 828 if (msb->eject) { 829 while ((req = elv_next_request(q)) != NULL) 830 __blk_end_request(req, -ENODEV, blk_rq_bytes(req)); 831 832 return; 833 } 834 835 msb->has_request = 1; 836 if (mspro_block_issue_req(card, 0)) 837 msb->has_request = 0; 838 } 839 840 /*** Initialization ***/ 841 842 static int mspro_block_wait_for_ced(struct memstick_dev *card) 843 { 844 struct mspro_block_data *msb = memstick_get_drvdata(card); 845 846 card->next_request = h_mspro_block_req_init; 847 msb->mrq_handler = h_mspro_block_wait_for_ced; 848 memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1); 849 memstick_new_req(card->host); 850 wait_for_completion(&card->mrq_complete); 851 return card->current_mrq.error; 852 } 853 854 static int mspro_block_set_interface(struct memstick_dev *card, 855 unsigned char sys_reg) 856 { 857 struct memstick_host *host = card->host; 858 struct mspro_block_data *msb = memstick_get_drvdata(card); 859 struct mspro_param_register param = { 860 .system = sys_reg, 861 .data_count = 0, 862 .data_address = 0, 863 .tpc_param = 0 864 }; 865 866 card->next_request = h_mspro_block_req_init; 867 msb->mrq_handler = h_mspro_block_default; 868 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, ¶m, 869 sizeof(param)); 870 memstick_new_req(host); 871 wait_for_completion(&card->mrq_complete); 872 return card->current_mrq.error; 873 } 874 875 static int mspro_block_switch_interface(struct memstick_dev *card) 876 { 877 struct memstick_host *host = card->host; 878 struct mspro_block_data *msb = memstick_get_drvdata(card); 879 int rc = 0; 880 881 try_again: 882 if (msb->caps & MEMSTICK_CAP_PAR4) 883 rc = mspro_block_set_interface(card, MEMSTICK_SYS_PAR4); 884 else 885 return 0; 886 887 if (rc) { 888 printk(KERN_WARNING 889 "%s: could not switch to 4-bit mode, error %d\n", 890 dev_name(&card->dev), rc); 891 return 0; 892 } 893 894 msb->system = MEMSTICK_SYS_PAR4; 895 host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_PAR4); 896 printk(KERN_INFO "%s: switching to 4-bit parallel mode\n", 897 dev_name(&card->dev)); 898 899 if (msb->caps & MEMSTICK_CAP_PAR8) { 900 rc = mspro_block_set_interface(card, MEMSTICK_SYS_PAR8); 901 902 if (!rc) { 903 msb->system = MEMSTICK_SYS_PAR8; 904 host->set_param(host, MEMSTICK_INTERFACE, 905 MEMSTICK_PAR8); 906 printk(KERN_INFO 907 "%s: switching to 8-bit parallel mode\n", 908 dev_name(&card->dev)); 909 } else 910 printk(KERN_WARNING 911 "%s: could not switch to 8-bit mode, error %d\n", 912 dev_name(&card->dev), rc); 913 } 914 915 card->next_request = h_mspro_block_req_init; 916 msb->mrq_handler = h_mspro_block_default; 917 memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1); 918 memstick_new_req(card->host); 919 wait_for_completion(&card->mrq_complete); 920 rc = card->current_mrq.error; 921 922 if (rc) { 923 printk(KERN_WARNING 924 "%s: interface error, trying to fall back to serial\n", 925 dev_name(&card->dev)); 926 msb->system = MEMSTICK_SYS_SERIAL; 927 host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_OFF); 928 msleep(10); 929 host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_ON); 930 host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_SERIAL); 931 932 rc = memstick_set_rw_addr(card); 933 if (!rc) 934 rc = mspro_block_set_interface(card, msb->system); 935 936 if (!rc) { 937 msleep(150); 938 rc = mspro_block_wait_for_ced(card); 939 if (rc) 940 return rc; 941 942 if (msb->caps & MEMSTICK_CAP_PAR8) { 943 msb->caps &= ~MEMSTICK_CAP_PAR8; 944 goto try_again; 945 } 946 } 947 } 948 return rc; 949 } 950 951 /* Memory allocated for attributes by this function should be freed by 952 * mspro_block_data_clear, no matter if the initialization process succeded 953 * or failed. 954 */ 955 static int mspro_block_read_attributes(struct memstick_dev *card) 956 { 957 struct mspro_block_data *msb = memstick_get_drvdata(card); 958 struct mspro_param_register param = { 959 .system = msb->system, 960 .data_count = cpu_to_be16(1), 961 .data_address = 0, 962 .tpc_param = 0 963 }; 964 struct mspro_attribute *attr = NULL; 965 struct mspro_sys_attr *s_attr = NULL; 966 unsigned char *buffer = NULL; 967 int cnt, rc, attr_count; 968 unsigned int addr; 969 unsigned short page_count; 970 971 attr = kmalloc(msb->page_size, GFP_KERNEL); 972 if (!attr) 973 return -ENOMEM; 974 975 sg_init_one(&msb->req_sg[0], attr, msb->page_size); 976 msb->seg_count = 1; 977 msb->current_seg = 0; 978 msb->current_page = 0; 979 msb->data_dir = READ; 980 msb->transfer_cmd = MSPRO_CMD_READ_ATRB; 981 982 card->next_request = h_mspro_block_req_init; 983 msb->mrq_handler = h_mspro_block_transfer_data; 984 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, ¶m, 985 sizeof(param)); 986 memstick_new_req(card->host); 987 wait_for_completion(&card->mrq_complete); 988 if (card->current_mrq.error) { 989 rc = card->current_mrq.error; 990 goto out_free_attr; 991 } 992 993 if (be16_to_cpu(attr->signature) != MSPRO_BLOCK_SIGNATURE) { 994 printk(KERN_ERR "%s: unrecognized device signature %x\n", 995 dev_name(&card->dev), be16_to_cpu(attr->signature)); 996 rc = -ENODEV; 997 goto out_free_attr; 998 } 999 1000 if (attr->count > MSPRO_BLOCK_MAX_ATTRIBUTES) { 1001 printk(KERN_WARNING "%s: way too many attribute entries\n", 1002 dev_name(&card->dev)); 1003 attr_count = MSPRO_BLOCK_MAX_ATTRIBUTES; 1004 } else 1005 attr_count = attr->count; 1006 1007 msb->attr_group.attrs = kzalloc((attr_count + 1) 1008 * sizeof(struct attribute), 1009 GFP_KERNEL); 1010 if (!msb->attr_group.attrs) { 1011 rc = -ENOMEM; 1012 goto out_free_attr; 1013 } 1014 msb->attr_group.name = "media_attributes"; 1015 1016 buffer = kmalloc(msb->page_size, GFP_KERNEL); 1017 if (!buffer) { 1018 rc = -ENOMEM; 1019 goto out_free_attr; 1020 } 1021 memcpy(buffer, (char *)attr, msb->page_size); 1022 page_count = 1; 1023 1024 for (cnt = 0; cnt < attr_count; ++cnt) { 1025 s_attr = kzalloc(sizeof(struct mspro_sys_attr), GFP_KERNEL); 1026 if (!s_attr) { 1027 rc = -ENOMEM; 1028 goto out_free_buffer; 1029 } 1030 1031 msb->attr_group.attrs[cnt] = &s_attr->dev_attr.attr; 1032 addr = be32_to_cpu(attr->entries[cnt].address); 1033 rc = be32_to_cpu(attr->entries[cnt].size); 1034 dev_dbg(&card->dev, "adding attribute %d: id %x, address %x, " 1035 "size %x\n", cnt, attr->entries[cnt].id, addr, rc); 1036 s_attr->id = attr->entries[cnt].id; 1037 if (mspro_block_attr_name(s_attr->id)) 1038 snprintf(s_attr->name, sizeof(s_attr->name), "%s", 1039 mspro_block_attr_name(attr->entries[cnt].id)); 1040 else 1041 snprintf(s_attr->name, sizeof(s_attr->name), 1042 "attr_x%02x", attr->entries[cnt].id); 1043 1044 s_attr->dev_attr.attr.name = s_attr->name; 1045 s_attr->dev_attr.attr.mode = S_IRUGO; 1046 s_attr->dev_attr.show = mspro_block_attr_show(s_attr->id); 1047 1048 if (!rc) 1049 continue; 1050 1051 s_attr->size = rc; 1052 s_attr->data = kmalloc(rc, GFP_KERNEL); 1053 if (!s_attr->data) { 1054 rc = -ENOMEM; 1055 goto out_free_buffer; 1056 } 1057 1058 if (((addr / msb->page_size) 1059 == be32_to_cpu(param.data_address)) 1060 && (((addr + rc - 1) / msb->page_size) 1061 == be32_to_cpu(param.data_address))) { 1062 memcpy(s_attr->data, buffer + addr % msb->page_size, 1063 rc); 1064 continue; 1065 } 1066 1067 if (page_count <= (rc / msb->page_size)) { 1068 kfree(buffer); 1069 page_count = (rc / msb->page_size) + 1; 1070 buffer = kmalloc(page_count * msb->page_size, 1071 GFP_KERNEL); 1072 if (!buffer) { 1073 rc = -ENOMEM; 1074 goto out_free_attr; 1075 } 1076 } 1077 1078 param.system = msb->system; 1079 param.data_count = cpu_to_be16((rc / msb->page_size) + 1); 1080 param.data_address = cpu_to_be32(addr / msb->page_size); 1081 param.tpc_param = 0; 1082 1083 sg_init_one(&msb->req_sg[0], buffer, 1084 be16_to_cpu(param.data_count) * msb->page_size); 1085 msb->seg_count = 1; 1086 msb->current_seg = 0; 1087 msb->current_page = 0; 1088 msb->data_dir = READ; 1089 msb->transfer_cmd = MSPRO_CMD_READ_ATRB; 1090 1091 dev_dbg(&card->dev, "reading attribute pages %x, %x\n", 1092 be32_to_cpu(param.data_address), 1093 be16_to_cpu(param.data_count)); 1094 1095 card->next_request = h_mspro_block_req_init; 1096 msb->mrq_handler = h_mspro_block_transfer_data; 1097 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, 1098 (char *)¶m, sizeof(param)); 1099 memstick_new_req(card->host); 1100 wait_for_completion(&card->mrq_complete); 1101 if (card->current_mrq.error) { 1102 rc = card->current_mrq.error; 1103 goto out_free_buffer; 1104 } 1105 1106 memcpy(s_attr->data, buffer + addr % msb->page_size, rc); 1107 } 1108 1109 rc = 0; 1110 out_free_buffer: 1111 kfree(buffer); 1112 out_free_attr: 1113 kfree(attr); 1114 return rc; 1115 } 1116 1117 static int mspro_block_init_card(struct memstick_dev *card) 1118 { 1119 struct mspro_block_data *msb = memstick_get_drvdata(card); 1120 struct memstick_host *host = card->host; 1121 int rc = 0; 1122 1123 msb->system = MEMSTICK_SYS_SERIAL; 1124 card->reg_addr.r_offset = offsetof(struct mspro_register, status); 1125 card->reg_addr.r_length = sizeof(struct ms_status_register); 1126 card->reg_addr.w_offset = offsetof(struct mspro_register, param); 1127 card->reg_addr.w_length = sizeof(struct mspro_param_register); 1128 1129 if (memstick_set_rw_addr(card)) 1130 return -EIO; 1131 1132 msb->caps = host->caps; 1133 1134 msleep(150); 1135 rc = mspro_block_wait_for_ced(card); 1136 if (rc) 1137 return rc; 1138 1139 rc = mspro_block_switch_interface(card); 1140 if (rc) 1141 return rc; 1142 1143 dev_dbg(&card->dev, "card activated\n"); 1144 if (msb->system != MEMSTICK_SYS_SERIAL) 1145 msb->caps |= MEMSTICK_CAP_AUTO_GET_INT; 1146 1147 card->next_request = h_mspro_block_req_init; 1148 msb->mrq_handler = h_mspro_block_get_ro; 1149 memstick_init_req(&card->current_mrq, MS_TPC_READ_REG, NULL, 1150 sizeof(struct ms_status_register)); 1151 memstick_new_req(card->host); 1152 wait_for_completion(&card->mrq_complete); 1153 if (card->current_mrq.error) 1154 return card->current_mrq.error; 1155 1156 dev_dbg(&card->dev, "card r/w status %d\n", msb->read_only ? 0 : 1); 1157 1158 msb->page_size = 512; 1159 rc = mspro_block_read_attributes(card); 1160 if (rc) 1161 return rc; 1162 1163 dev_dbg(&card->dev, "attributes loaded\n"); 1164 return 0; 1165 1166 } 1167 1168 static int mspro_block_init_disk(struct memstick_dev *card) 1169 { 1170 struct mspro_block_data *msb = memstick_get_drvdata(card); 1171 struct memstick_host *host = card->host; 1172 struct mspro_devinfo *dev_info = NULL; 1173 struct mspro_sys_info *sys_info = NULL; 1174 struct mspro_sys_attr *s_attr = NULL; 1175 int rc, disk_id; 1176 u64 limit = BLK_BOUNCE_HIGH; 1177 unsigned long capacity; 1178 1179 if (host->dev.dma_mask && *(host->dev.dma_mask)) 1180 limit = *(host->dev.dma_mask); 1181 1182 for (rc = 0; msb->attr_group.attrs[rc]; ++rc) { 1183 s_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[rc]); 1184 1185 if (s_attr->id == MSPRO_BLOCK_ID_DEVINFO) 1186 dev_info = s_attr->data; 1187 else if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO) 1188 sys_info = s_attr->data; 1189 } 1190 1191 if (!dev_info || !sys_info) 1192 return -ENODEV; 1193 1194 msb->cylinders = be16_to_cpu(dev_info->cylinders); 1195 msb->heads = be16_to_cpu(dev_info->heads); 1196 msb->sectors_per_track = be16_to_cpu(dev_info->sectors_per_track); 1197 1198 msb->page_size = be16_to_cpu(sys_info->unit_size); 1199 1200 if (!idr_pre_get(&mspro_block_disk_idr, GFP_KERNEL)) 1201 return -ENOMEM; 1202 1203 mutex_lock(&mspro_block_disk_lock); 1204 rc = idr_get_new(&mspro_block_disk_idr, card, &disk_id); 1205 mutex_unlock(&mspro_block_disk_lock); 1206 1207 if (rc) 1208 return rc; 1209 1210 if ((disk_id << MSPRO_BLOCK_PART_SHIFT) > 255) { 1211 rc = -ENOSPC; 1212 goto out_release_id; 1213 } 1214 1215 msb->disk = alloc_disk(1 << MSPRO_BLOCK_PART_SHIFT); 1216 if (!msb->disk) { 1217 rc = -ENOMEM; 1218 goto out_release_id; 1219 } 1220 1221 msb->queue = blk_init_queue(mspro_block_submit_req, &msb->q_lock); 1222 if (!msb->queue) { 1223 rc = -ENOMEM; 1224 goto out_put_disk; 1225 } 1226 1227 msb->queue->queuedata = card; 1228 blk_queue_prep_rq(msb->queue, mspro_block_prepare_req); 1229 1230 blk_queue_bounce_limit(msb->queue, limit); 1231 blk_queue_max_sectors(msb->queue, MSPRO_BLOCK_MAX_PAGES); 1232 blk_queue_max_phys_segments(msb->queue, MSPRO_BLOCK_MAX_SEGS); 1233 blk_queue_max_hw_segments(msb->queue, MSPRO_BLOCK_MAX_SEGS); 1234 blk_queue_max_segment_size(msb->queue, 1235 MSPRO_BLOCK_MAX_PAGES * msb->page_size); 1236 1237 msb->disk->major = major; 1238 msb->disk->first_minor = disk_id << MSPRO_BLOCK_PART_SHIFT; 1239 msb->disk->fops = &ms_block_bdops; 1240 msb->usage_count = 1; 1241 msb->disk->private_data = msb; 1242 msb->disk->queue = msb->queue; 1243 msb->disk->driverfs_dev = &card->dev; 1244 1245 sprintf(msb->disk->disk_name, "mspblk%d", disk_id); 1246 1247 blk_queue_hardsect_size(msb->queue, msb->page_size); 1248 1249 capacity = be16_to_cpu(sys_info->user_block_count); 1250 capacity *= be16_to_cpu(sys_info->block_size); 1251 capacity *= msb->page_size >> 9; 1252 set_capacity(msb->disk, capacity); 1253 dev_dbg(&card->dev, "capacity set %ld\n", capacity); 1254 1255 add_disk(msb->disk); 1256 msb->active = 1; 1257 return 0; 1258 1259 out_put_disk: 1260 put_disk(msb->disk); 1261 out_release_id: 1262 mutex_lock(&mspro_block_disk_lock); 1263 idr_remove(&mspro_block_disk_idr, disk_id); 1264 mutex_unlock(&mspro_block_disk_lock); 1265 return rc; 1266 } 1267 1268 static void mspro_block_data_clear(struct mspro_block_data *msb) 1269 { 1270 int cnt; 1271 struct mspro_sys_attr *s_attr; 1272 1273 if (msb->attr_group.attrs) { 1274 for (cnt = 0; msb->attr_group.attrs[cnt]; ++cnt) { 1275 s_attr = mspro_from_sysfs_attr(msb->attr_group 1276 .attrs[cnt]); 1277 kfree(s_attr->data); 1278 kfree(s_attr); 1279 } 1280 kfree(msb->attr_group.attrs); 1281 } 1282 1283 msb->card = NULL; 1284 } 1285 1286 static int mspro_block_check_card(struct memstick_dev *card) 1287 { 1288 struct mspro_block_data *msb = memstick_get_drvdata(card); 1289 1290 return (msb->active == 1); 1291 } 1292 1293 static int mspro_block_probe(struct memstick_dev *card) 1294 { 1295 struct mspro_block_data *msb; 1296 int rc = 0; 1297 1298 msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL); 1299 if (!msb) 1300 return -ENOMEM; 1301 memstick_set_drvdata(card, msb); 1302 msb->card = card; 1303 spin_lock_init(&msb->q_lock); 1304 1305 rc = mspro_block_init_card(card); 1306 1307 if (rc) 1308 goto out_free; 1309 1310 rc = sysfs_create_group(&card->dev.kobj, &msb->attr_group); 1311 if (rc) 1312 goto out_free; 1313 1314 rc = mspro_block_init_disk(card); 1315 if (!rc) { 1316 card->check = mspro_block_check_card; 1317 card->stop = mspro_block_stop; 1318 card->start = mspro_block_start; 1319 return 0; 1320 } 1321 1322 sysfs_remove_group(&card->dev.kobj, &msb->attr_group); 1323 out_free: 1324 memstick_set_drvdata(card, NULL); 1325 mspro_block_data_clear(msb); 1326 kfree(msb); 1327 return rc; 1328 } 1329 1330 static void mspro_block_remove(struct memstick_dev *card) 1331 { 1332 struct mspro_block_data *msb = memstick_get_drvdata(card); 1333 unsigned long flags; 1334 1335 del_gendisk(msb->disk); 1336 dev_dbg(&card->dev, "mspro block remove\n"); 1337 spin_lock_irqsave(&msb->q_lock, flags); 1338 msb->eject = 1; 1339 blk_start_queue(msb->queue); 1340 spin_unlock_irqrestore(&msb->q_lock, flags); 1341 1342 blk_cleanup_queue(msb->queue); 1343 msb->queue = NULL; 1344 1345 sysfs_remove_group(&card->dev.kobj, &msb->attr_group); 1346 1347 mutex_lock(&mspro_block_disk_lock); 1348 mspro_block_data_clear(msb); 1349 mutex_unlock(&mspro_block_disk_lock); 1350 1351 mspro_block_disk_release(msb->disk); 1352 memstick_set_drvdata(card, NULL); 1353 } 1354 1355 #ifdef CONFIG_PM 1356 1357 static int mspro_block_suspend(struct memstick_dev *card, pm_message_t state) 1358 { 1359 struct mspro_block_data *msb = memstick_get_drvdata(card); 1360 unsigned long flags; 1361 1362 spin_lock_irqsave(&msb->q_lock, flags); 1363 blk_stop_queue(msb->queue); 1364 msb->active = 0; 1365 spin_unlock_irqrestore(&msb->q_lock, flags); 1366 1367 return 0; 1368 } 1369 1370 static int mspro_block_resume(struct memstick_dev *card) 1371 { 1372 struct mspro_block_data *msb = memstick_get_drvdata(card); 1373 unsigned long flags; 1374 int rc = 0; 1375 1376 #ifdef CONFIG_MEMSTICK_UNSAFE_RESUME 1377 1378 struct mspro_block_data *new_msb; 1379 struct memstick_host *host = card->host; 1380 struct mspro_sys_attr *s_attr, *r_attr; 1381 unsigned char cnt; 1382 1383 mutex_lock(&host->lock); 1384 new_msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL); 1385 if (!new_msb) { 1386 rc = -ENOMEM; 1387 goto out_unlock; 1388 } 1389 1390 new_msb->card = card; 1391 memstick_set_drvdata(card, new_msb); 1392 if (mspro_block_init_card(card)) 1393 goto out_free; 1394 1395 for (cnt = 0; new_msb->attr_group.attrs[cnt] 1396 && msb->attr_group.attrs[cnt]; ++cnt) { 1397 s_attr = mspro_from_sysfs_attr(new_msb->attr_group.attrs[cnt]); 1398 r_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[cnt]); 1399 1400 if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO 1401 && r_attr->id == s_attr->id) { 1402 if (memcmp(s_attr->data, r_attr->data, s_attr->size)) 1403 break; 1404 1405 msb->active = 1; 1406 break; 1407 } 1408 } 1409 1410 out_free: 1411 memstick_set_drvdata(card, msb); 1412 mspro_block_data_clear(new_msb); 1413 kfree(new_msb); 1414 out_unlock: 1415 mutex_unlock(&host->lock); 1416 1417 #endif /* CONFIG_MEMSTICK_UNSAFE_RESUME */ 1418 1419 spin_lock_irqsave(&msb->q_lock, flags); 1420 blk_start_queue(msb->queue); 1421 spin_unlock_irqrestore(&msb->q_lock, flags); 1422 return rc; 1423 } 1424 1425 #else 1426 1427 #define mspro_block_suspend NULL 1428 #define mspro_block_resume NULL 1429 1430 #endif /* CONFIG_PM */ 1431 1432 static struct memstick_device_id mspro_block_id_tbl[] = { 1433 {MEMSTICK_MATCH_ALL, MEMSTICK_TYPE_PRO, MEMSTICK_CATEGORY_STORAGE_DUO, 1434 MEMSTICK_CLASS_DUO}, 1435 {} 1436 }; 1437 1438 1439 static struct memstick_driver mspro_block_driver = { 1440 .driver = { 1441 .name = DRIVER_NAME, 1442 .owner = THIS_MODULE 1443 }, 1444 .id_table = mspro_block_id_tbl, 1445 .probe = mspro_block_probe, 1446 .remove = mspro_block_remove, 1447 .suspend = mspro_block_suspend, 1448 .resume = mspro_block_resume 1449 }; 1450 1451 static int __init mspro_block_init(void) 1452 { 1453 int rc = -ENOMEM; 1454 1455 rc = register_blkdev(major, DRIVER_NAME); 1456 if (rc < 0) { 1457 printk(KERN_ERR DRIVER_NAME ": failed to register " 1458 "major %d, error %d\n", major, rc); 1459 return rc; 1460 } 1461 if (!major) 1462 major = rc; 1463 1464 rc = memstick_register_driver(&mspro_block_driver); 1465 if (rc) 1466 unregister_blkdev(major, DRIVER_NAME); 1467 return rc; 1468 } 1469 1470 static void __exit mspro_block_exit(void) 1471 { 1472 memstick_unregister_driver(&mspro_block_driver); 1473 unregister_blkdev(major, DRIVER_NAME); 1474 idr_destroy(&mspro_block_disk_idr); 1475 } 1476 1477 module_init(mspro_block_init); 1478 module_exit(mspro_block_exit); 1479 1480 MODULE_LICENSE("GPL"); 1481 MODULE_AUTHOR("Alex Dubov"); 1482 MODULE_DESCRIPTION("Sony MemoryStickPro block device driver"); 1483 MODULE_DEVICE_TABLE(memstick, mspro_block_id_tbl); 1484