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/smp_lock.h> 22 #include <linux/memstick.h> 23 24 #define DRIVER_NAME "mspro_block" 25 26 static int major; 27 module_param(major, int, 0644); 28 29 #define MSPRO_BLOCK_MAX_SEGS 32 30 #define MSPRO_BLOCK_MAX_PAGES ((2 << 16) - 1) 31 32 #define MSPRO_BLOCK_SIGNATURE 0xa5c3 33 #define MSPRO_BLOCK_MAX_ATTRIBUTES 41 34 35 #define MSPRO_BLOCK_PART_SHIFT 3 36 37 enum { 38 MSPRO_BLOCK_ID_SYSINFO = 0x10, 39 MSPRO_BLOCK_ID_MODELNAME = 0x15, 40 MSPRO_BLOCK_ID_MBR = 0x20, 41 MSPRO_BLOCK_ID_PBR16 = 0x21, 42 MSPRO_BLOCK_ID_PBR32 = 0x22, 43 MSPRO_BLOCK_ID_SPECFILEVALUES1 = 0x25, 44 MSPRO_BLOCK_ID_SPECFILEVALUES2 = 0x26, 45 MSPRO_BLOCK_ID_DEVINFO = 0x30 46 }; 47 48 struct mspro_sys_attr { 49 size_t size; 50 void *data; 51 unsigned char id; 52 char name[32]; 53 struct device_attribute dev_attr; 54 }; 55 56 struct mspro_attr_entry { 57 __be32 address; 58 __be32 size; 59 unsigned char id; 60 unsigned char reserved[3]; 61 } __attribute__((packed)); 62 63 struct mspro_attribute { 64 __be16 signature; 65 unsigned short version; 66 unsigned char count; 67 unsigned char reserved[11]; 68 struct mspro_attr_entry entries[]; 69 } __attribute__((packed)); 70 71 struct mspro_sys_info { 72 unsigned char class; 73 unsigned char reserved0; 74 __be16 block_size; 75 __be16 block_count; 76 __be16 user_block_count; 77 __be16 page_size; 78 unsigned char reserved1[2]; 79 unsigned char assembly_date[8]; 80 __be32 serial_number; 81 unsigned char assembly_maker_code; 82 unsigned char assembly_model_code[3]; 83 __be16 memory_maker_code; 84 __be16 memory_model_code; 85 unsigned char reserved2[4]; 86 unsigned char vcc; 87 unsigned char vpp; 88 __be16 controller_number; 89 __be16 controller_function; 90 __be16 start_sector; 91 __be16 unit_size; 92 unsigned char ms_sub_class; 93 unsigned char reserved3[4]; 94 unsigned char interface_type; 95 __be16 controller_code; 96 unsigned char format_type; 97 unsigned char reserved4; 98 unsigned char device_type; 99 unsigned char reserved5[7]; 100 unsigned char mspro_id[16]; 101 unsigned char reserved6[16]; 102 } __attribute__((packed)); 103 104 struct mspro_mbr { 105 unsigned char boot_partition; 106 unsigned char start_head; 107 unsigned char start_sector; 108 unsigned char start_cylinder; 109 unsigned char partition_type; 110 unsigned char end_head; 111 unsigned char end_sector; 112 unsigned char end_cylinder; 113 unsigned int start_sectors; 114 unsigned int sectors_per_partition; 115 } __attribute__((packed)); 116 117 struct mspro_specfile { 118 char name[8]; 119 char ext[3]; 120 unsigned char attr; 121 unsigned char reserved[10]; 122 unsigned short time; 123 unsigned short date; 124 unsigned short cluster; 125 unsigned int size; 126 } __attribute__((packed)); 127 128 struct mspro_devinfo { 129 __be16 cylinders; 130 __be16 heads; 131 __be16 bytes_per_track; 132 __be16 bytes_per_sector; 133 __be16 sectors_per_track; 134 unsigned char reserved[6]; 135 } __attribute__((packed)); 136 137 struct mspro_block_data { 138 struct memstick_dev *card; 139 unsigned int usage_count; 140 unsigned int caps; 141 struct gendisk *disk; 142 struct request_queue *queue; 143 struct request *block_req; 144 spinlock_t q_lock; 145 146 unsigned short page_size; 147 unsigned short cylinders; 148 unsigned short heads; 149 unsigned short sectors_per_track; 150 151 unsigned char system; 152 unsigned char read_only:1, 153 eject:1, 154 has_request:1, 155 data_dir:1, 156 active:1; 157 unsigned char transfer_cmd; 158 159 int (*mrq_handler)(struct memstick_dev *card, 160 struct memstick_request **mrq); 161 162 struct attribute_group attr_group; 163 164 struct scatterlist req_sg[MSPRO_BLOCK_MAX_SEGS]; 165 unsigned int seg_count; 166 unsigned int current_seg; 167 unsigned int current_page; 168 }; 169 170 static DEFINE_IDR(mspro_block_disk_idr); 171 static DEFINE_MUTEX(mspro_block_disk_lock); 172 173 static int mspro_block_complete_req(struct memstick_dev *card, int error); 174 175 /*** Block device ***/ 176 177 static int mspro_block_bd_open(struct block_device *bdev, fmode_t mode) 178 { 179 struct gendisk *disk = bdev->bd_disk; 180 struct mspro_block_data *msb = disk->private_data; 181 int rc = -ENXIO; 182 183 lock_kernel(); 184 mutex_lock(&mspro_block_disk_lock); 185 186 if (msb && msb->card) { 187 msb->usage_count++; 188 if ((mode & FMODE_WRITE) && msb->read_only) 189 rc = -EROFS; 190 else 191 rc = 0; 192 } 193 194 mutex_unlock(&mspro_block_disk_lock); 195 unlock_kernel(); 196 197 return rc; 198 } 199 200 201 static int mspro_block_disk_release(struct gendisk *disk) 202 { 203 struct mspro_block_data *msb = disk->private_data; 204 int disk_id = MINOR(disk_devt(disk)) >> MSPRO_BLOCK_PART_SHIFT; 205 206 mutex_lock(&mspro_block_disk_lock); 207 208 if (msb) { 209 if (msb->usage_count) 210 msb->usage_count--; 211 212 if (!msb->usage_count) { 213 kfree(msb); 214 disk->private_data = NULL; 215 idr_remove(&mspro_block_disk_idr, disk_id); 216 put_disk(disk); 217 } 218 } 219 220 mutex_unlock(&mspro_block_disk_lock); 221 222 return 0; 223 } 224 225 static int mspro_block_bd_release(struct gendisk *disk, fmode_t mode) 226 { 227 int ret; 228 lock_kernel(); 229 ret = mspro_block_disk_release(disk); 230 unlock_kernel(); 231 return ret; 232 } 233 234 static int mspro_block_bd_getgeo(struct block_device *bdev, 235 struct hd_geometry *geo) 236 { 237 struct mspro_block_data *msb = bdev->bd_disk->private_data; 238 239 geo->heads = msb->heads; 240 geo->sectors = msb->sectors_per_track; 241 geo->cylinders = msb->cylinders; 242 243 return 0; 244 } 245 246 static const struct block_device_operations ms_block_bdops = { 247 .open = mspro_block_bd_open, 248 .release = mspro_block_bd_release, 249 .getgeo = mspro_block_bd_getgeo, 250 .owner = THIS_MODULE 251 }; 252 253 /*** Information ***/ 254 255 static struct mspro_sys_attr *mspro_from_sysfs_attr(struct attribute *attr) 256 { 257 struct device_attribute *dev_attr 258 = container_of(attr, struct device_attribute, attr); 259 return container_of(dev_attr, struct mspro_sys_attr, dev_attr); 260 } 261 262 static const char *mspro_block_attr_name(unsigned char tag) 263 { 264 switch (tag) { 265 case MSPRO_BLOCK_ID_SYSINFO: 266 return "attr_sysinfo"; 267 case MSPRO_BLOCK_ID_MODELNAME: 268 return "attr_modelname"; 269 case MSPRO_BLOCK_ID_MBR: 270 return "attr_mbr"; 271 case MSPRO_BLOCK_ID_PBR16: 272 return "attr_pbr16"; 273 case MSPRO_BLOCK_ID_PBR32: 274 return "attr_pbr32"; 275 case MSPRO_BLOCK_ID_SPECFILEVALUES1: 276 return "attr_specfilevalues1"; 277 case MSPRO_BLOCK_ID_SPECFILEVALUES2: 278 return "attr_specfilevalues2"; 279 case MSPRO_BLOCK_ID_DEVINFO: 280 return "attr_devinfo"; 281 default: 282 return NULL; 283 }; 284 } 285 286 typedef ssize_t (*sysfs_show_t)(struct device *dev, 287 struct device_attribute *attr, 288 char *buffer); 289 290 static ssize_t mspro_block_attr_show_default(struct device *dev, 291 struct device_attribute *attr, 292 char *buffer) 293 { 294 struct mspro_sys_attr *s_attr = container_of(attr, 295 struct mspro_sys_attr, 296 dev_attr); 297 298 ssize_t cnt, rc = 0; 299 300 for (cnt = 0; cnt < s_attr->size; cnt++) { 301 if (cnt && !(cnt % 16)) { 302 if (PAGE_SIZE - rc) 303 buffer[rc++] = '\n'; 304 } 305 306 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "%02x ", 307 ((unsigned char *)s_attr->data)[cnt]); 308 } 309 return rc; 310 } 311 312 static ssize_t mspro_block_attr_show_sysinfo(struct device *dev, 313 struct device_attribute *attr, 314 char *buffer) 315 { 316 struct mspro_sys_attr *x_attr = container_of(attr, 317 struct mspro_sys_attr, 318 dev_attr); 319 struct mspro_sys_info *x_sys = x_attr->data; 320 ssize_t rc = 0; 321 int date_tz = 0, date_tz_f = 0; 322 323 if (x_sys->assembly_date[0] > 0x80U) { 324 date_tz = (~x_sys->assembly_date[0]) + 1; 325 date_tz_f = date_tz & 3; 326 date_tz >>= 2; 327 date_tz = -date_tz; 328 date_tz_f *= 15; 329 } else if (x_sys->assembly_date[0] < 0x80U) { 330 date_tz = x_sys->assembly_date[0]; 331 date_tz_f = date_tz & 3; 332 date_tz >>= 2; 333 date_tz_f *= 15; 334 } 335 336 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "class: %x\n", 337 x_sys->class); 338 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "block size: %x\n", 339 be16_to_cpu(x_sys->block_size)); 340 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "block count: %x\n", 341 be16_to_cpu(x_sys->block_count)); 342 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "user block count: %x\n", 343 be16_to_cpu(x_sys->user_block_count)); 344 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "page size: %x\n", 345 be16_to_cpu(x_sys->page_size)); 346 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "assembly date: " 347 "GMT%+d:%d %04u-%02u-%02u %02u:%02u:%02u\n", 348 date_tz, date_tz_f, 349 be16_to_cpup((__be16 *)&x_sys->assembly_date[1]), 350 x_sys->assembly_date[3], x_sys->assembly_date[4], 351 x_sys->assembly_date[5], x_sys->assembly_date[6], 352 x_sys->assembly_date[7]); 353 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "serial number: %x\n", 354 be32_to_cpu(x_sys->serial_number)); 355 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, 356 "assembly maker code: %x\n", 357 x_sys->assembly_maker_code); 358 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "assembly model code: " 359 "%02x%02x%02x\n", x_sys->assembly_model_code[0], 360 x_sys->assembly_model_code[1], 361 x_sys->assembly_model_code[2]); 362 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "memory maker code: %x\n", 363 be16_to_cpu(x_sys->memory_maker_code)); 364 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "memory model code: %x\n", 365 be16_to_cpu(x_sys->memory_model_code)); 366 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "vcc: %x\n", 367 x_sys->vcc); 368 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "vpp: %x\n", 369 x_sys->vpp); 370 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "controller number: %x\n", 371 be16_to_cpu(x_sys->controller_number)); 372 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, 373 "controller function: %x\n", 374 be16_to_cpu(x_sys->controller_function)); 375 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sector: %x\n", 376 be16_to_cpu(x_sys->start_sector)); 377 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "unit size: %x\n", 378 be16_to_cpu(x_sys->unit_size)); 379 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "sub class: %x\n", 380 x_sys->ms_sub_class); 381 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "interface type: %x\n", 382 x_sys->interface_type); 383 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "controller code: %x\n", 384 be16_to_cpu(x_sys->controller_code)); 385 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "format type: %x\n", 386 x_sys->format_type); 387 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "device type: %x\n", 388 x_sys->device_type); 389 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "mspro id: %s\n", 390 x_sys->mspro_id); 391 return rc; 392 } 393 394 static ssize_t mspro_block_attr_show_modelname(struct device *dev, 395 struct device_attribute *attr, 396 char *buffer) 397 { 398 struct mspro_sys_attr *s_attr = container_of(attr, 399 struct mspro_sys_attr, 400 dev_attr); 401 402 return scnprintf(buffer, PAGE_SIZE, "%s", (char *)s_attr->data); 403 } 404 405 static ssize_t mspro_block_attr_show_mbr(struct device *dev, 406 struct device_attribute *attr, 407 char *buffer) 408 { 409 struct mspro_sys_attr *x_attr = container_of(attr, 410 struct mspro_sys_attr, 411 dev_attr); 412 struct mspro_mbr *x_mbr = x_attr->data; 413 ssize_t rc = 0; 414 415 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "boot partition: %x\n", 416 x_mbr->boot_partition); 417 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start head: %x\n", 418 x_mbr->start_head); 419 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sector: %x\n", 420 x_mbr->start_sector); 421 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start cylinder: %x\n", 422 x_mbr->start_cylinder); 423 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "partition type: %x\n", 424 x_mbr->partition_type); 425 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end head: %x\n", 426 x_mbr->end_head); 427 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end sector: %x\n", 428 x_mbr->end_sector); 429 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end cylinder: %x\n", 430 x_mbr->end_cylinder); 431 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sectors: %x\n", 432 x_mbr->start_sectors); 433 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, 434 "sectors per partition: %x\n", 435 x_mbr->sectors_per_partition); 436 return rc; 437 } 438 439 static ssize_t mspro_block_attr_show_specfile(struct device *dev, 440 struct device_attribute *attr, 441 char *buffer) 442 { 443 struct mspro_sys_attr *x_attr = container_of(attr, 444 struct mspro_sys_attr, 445 dev_attr); 446 struct mspro_specfile *x_spfile = x_attr->data; 447 char name[9], ext[4]; 448 ssize_t rc = 0; 449 450 memcpy(name, x_spfile->name, 8); 451 name[8] = 0; 452 memcpy(ext, x_spfile->ext, 3); 453 ext[3] = 0; 454 455 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "name: %s\n", name); 456 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "ext: %s\n", ext); 457 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "attribute: %x\n", 458 x_spfile->attr); 459 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "time: %d:%d:%d\n", 460 x_spfile->time >> 11, 461 (x_spfile->time >> 5) & 0x3f, 462 (x_spfile->time & 0x1f) * 2); 463 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "date: %d-%d-%d\n", 464 (x_spfile->date >> 9) + 1980, 465 (x_spfile->date >> 5) & 0xf, 466 x_spfile->date & 0x1f); 467 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start cluster: %x\n", 468 x_spfile->cluster); 469 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "size: %x\n", 470 x_spfile->size); 471 return rc; 472 } 473 474 static ssize_t mspro_block_attr_show_devinfo(struct device *dev, 475 struct device_attribute *attr, 476 char *buffer) 477 { 478 struct mspro_sys_attr *x_attr = container_of(attr, 479 struct mspro_sys_attr, 480 dev_attr); 481 struct mspro_devinfo *x_devinfo = x_attr->data; 482 ssize_t rc = 0; 483 484 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "cylinders: %x\n", 485 be16_to_cpu(x_devinfo->cylinders)); 486 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "heads: %x\n", 487 be16_to_cpu(x_devinfo->heads)); 488 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "bytes per track: %x\n", 489 be16_to_cpu(x_devinfo->bytes_per_track)); 490 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "bytes per sector: %x\n", 491 be16_to_cpu(x_devinfo->bytes_per_sector)); 492 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "sectors per track: %x\n", 493 be16_to_cpu(x_devinfo->sectors_per_track)); 494 return rc; 495 } 496 497 static sysfs_show_t mspro_block_attr_show(unsigned char tag) 498 { 499 switch (tag) { 500 case MSPRO_BLOCK_ID_SYSINFO: 501 return mspro_block_attr_show_sysinfo; 502 case MSPRO_BLOCK_ID_MODELNAME: 503 return mspro_block_attr_show_modelname; 504 case MSPRO_BLOCK_ID_MBR: 505 return mspro_block_attr_show_mbr; 506 case MSPRO_BLOCK_ID_SPECFILEVALUES1: 507 case MSPRO_BLOCK_ID_SPECFILEVALUES2: 508 return mspro_block_attr_show_specfile; 509 case MSPRO_BLOCK_ID_DEVINFO: 510 return mspro_block_attr_show_devinfo; 511 default: 512 return mspro_block_attr_show_default; 513 } 514 } 515 516 /*** Protocol handlers ***/ 517 518 /* 519 * Functions prefixed with "h_" are protocol callbacks. They can be called from 520 * interrupt context. Return value of 0 means that request processing is still 521 * ongoing, while special error value of -EAGAIN means that current request is 522 * finished (and request processor should come back some time later). 523 */ 524 525 static int h_mspro_block_req_init(struct memstick_dev *card, 526 struct memstick_request **mrq) 527 { 528 struct mspro_block_data *msb = memstick_get_drvdata(card); 529 530 *mrq = &card->current_mrq; 531 card->next_request = msb->mrq_handler; 532 return 0; 533 } 534 535 static int h_mspro_block_default(struct memstick_dev *card, 536 struct memstick_request **mrq) 537 { 538 return mspro_block_complete_req(card, (*mrq)->error); 539 } 540 541 static int h_mspro_block_default_bad(struct memstick_dev *card, 542 struct memstick_request **mrq) 543 { 544 return -ENXIO; 545 } 546 547 static int h_mspro_block_get_ro(struct memstick_dev *card, 548 struct memstick_request **mrq) 549 { 550 struct mspro_block_data *msb = memstick_get_drvdata(card); 551 552 if (!(*mrq)->error) { 553 if ((*mrq)->data[offsetof(struct ms_status_register, status0)] 554 & MEMSTICK_STATUS0_WP) 555 msb->read_only = 1; 556 else 557 msb->read_only = 0; 558 } 559 560 return mspro_block_complete_req(card, (*mrq)->error); 561 } 562 563 static int h_mspro_block_wait_for_ced(struct memstick_dev *card, 564 struct memstick_request **mrq) 565 { 566 dev_dbg(&card->dev, "wait for ced: value %x\n", (*mrq)->data[0]); 567 568 if (!(*mrq)->error) { 569 if ((*mrq)->data[0] & (MEMSTICK_INT_CMDNAK | MEMSTICK_INT_ERR)) 570 (*mrq)->error = -EFAULT; 571 else if (!((*mrq)->data[0] & MEMSTICK_INT_CED)) 572 return 0; 573 } 574 575 return mspro_block_complete_req(card, (*mrq)->error); 576 } 577 578 static int h_mspro_block_transfer_data(struct memstick_dev *card, 579 struct memstick_request **mrq) 580 { 581 struct mspro_block_data *msb = memstick_get_drvdata(card); 582 unsigned char t_val = 0; 583 struct scatterlist t_sg = { 0 }; 584 size_t t_offset; 585 586 if ((*mrq)->error) 587 return mspro_block_complete_req(card, (*mrq)->error); 588 589 switch ((*mrq)->tpc) { 590 case MS_TPC_WRITE_REG: 591 memstick_init_req(*mrq, MS_TPC_SET_CMD, &msb->transfer_cmd, 1); 592 (*mrq)->need_card_int = 1; 593 return 0; 594 case MS_TPC_SET_CMD: 595 t_val = (*mrq)->int_reg; 596 memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1); 597 if (msb->caps & MEMSTICK_CAP_AUTO_GET_INT) 598 goto has_int_reg; 599 return 0; 600 case MS_TPC_GET_INT: 601 t_val = (*mrq)->data[0]; 602 has_int_reg: 603 if (t_val & (MEMSTICK_INT_CMDNAK | MEMSTICK_INT_ERR)) { 604 t_val = MSPRO_CMD_STOP; 605 memstick_init_req(*mrq, MS_TPC_SET_CMD, &t_val, 1); 606 card->next_request = h_mspro_block_default; 607 return 0; 608 } 609 610 if (msb->current_page 611 == (msb->req_sg[msb->current_seg].length 612 / msb->page_size)) { 613 msb->current_page = 0; 614 msb->current_seg++; 615 616 if (msb->current_seg == msb->seg_count) { 617 if (t_val & MEMSTICK_INT_CED) { 618 return mspro_block_complete_req(card, 619 0); 620 } else { 621 card->next_request 622 = h_mspro_block_wait_for_ced; 623 memstick_init_req(*mrq, MS_TPC_GET_INT, 624 NULL, 1); 625 return 0; 626 } 627 } 628 } 629 630 if (!(t_val & MEMSTICK_INT_BREQ)) { 631 memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1); 632 return 0; 633 } 634 635 t_offset = msb->req_sg[msb->current_seg].offset; 636 t_offset += msb->current_page * msb->page_size; 637 638 sg_set_page(&t_sg, 639 nth_page(sg_page(&(msb->req_sg[msb->current_seg])), 640 t_offset >> PAGE_SHIFT), 641 msb->page_size, offset_in_page(t_offset)); 642 643 memstick_init_req_sg(*mrq, msb->data_dir == READ 644 ? MS_TPC_READ_LONG_DATA 645 : MS_TPC_WRITE_LONG_DATA, 646 &t_sg); 647 (*mrq)->need_card_int = 1; 648 return 0; 649 case MS_TPC_READ_LONG_DATA: 650 case MS_TPC_WRITE_LONG_DATA: 651 msb->current_page++; 652 if (msb->caps & MEMSTICK_CAP_AUTO_GET_INT) { 653 t_val = (*mrq)->int_reg; 654 goto has_int_reg; 655 } else { 656 memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1); 657 return 0; 658 } 659 660 default: 661 BUG(); 662 } 663 } 664 665 /*** Data transfer ***/ 666 667 static int mspro_block_issue_req(struct memstick_dev *card, int chunk) 668 { 669 struct mspro_block_data *msb = memstick_get_drvdata(card); 670 sector_t t_sec; 671 unsigned int count; 672 struct mspro_param_register param; 673 674 try_again: 675 while (chunk) { 676 msb->current_page = 0; 677 msb->current_seg = 0; 678 msb->seg_count = blk_rq_map_sg(msb->block_req->q, 679 msb->block_req, 680 msb->req_sg); 681 682 if (!msb->seg_count) { 683 chunk = __blk_end_request_cur(msb->block_req, -ENOMEM); 684 continue; 685 } 686 687 t_sec = blk_rq_pos(msb->block_req) << 9; 688 sector_div(t_sec, msb->page_size); 689 690 count = blk_rq_bytes(msb->block_req); 691 count /= msb->page_size; 692 693 param.system = msb->system; 694 param.data_count = cpu_to_be16(count); 695 param.data_address = cpu_to_be32((uint32_t)t_sec); 696 param.tpc_param = 0; 697 698 msb->data_dir = rq_data_dir(msb->block_req); 699 msb->transfer_cmd = msb->data_dir == READ 700 ? MSPRO_CMD_READ_DATA 701 : MSPRO_CMD_WRITE_DATA; 702 703 dev_dbg(&card->dev, "data transfer: cmd %x, " 704 "lba %x, count %x\n", msb->transfer_cmd, 705 be32_to_cpu(param.data_address), count); 706 707 card->next_request = h_mspro_block_req_init; 708 msb->mrq_handler = h_mspro_block_transfer_data; 709 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, 710 ¶m, sizeof(param)); 711 memstick_new_req(card->host); 712 return 0; 713 } 714 715 dev_dbg(&card->dev, "blk_fetch\n"); 716 msb->block_req = blk_fetch_request(msb->queue); 717 if (!msb->block_req) { 718 dev_dbg(&card->dev, "issue end\n"); 719 return -EAGAIN; 720 } 721 722 dev_dbg(&card->dev, "trying again\n"); 723 chunk = 1; 724 goto try_again; 725 } 726 727 static int mspro_block_complete_req(struct memstick_dev *card, int error) 728 { 729 struct mspro_block_data *msb = memstick_get_drvdata(card); 730 int chunk, cnt; 731 unsigned int t_len = 0; 732 unsigned long flags; 733 734 spin_lock_irqsave(&msb->q_lock, flags); 735 dev_dbg(&card->dev, "complete %d, %d\n", msb->has_request ? 1 : 0, 736 error); 737 738 if (msb->has_request) { 739 /* Nothing to do - not really an error */ 740 if (error == -EAGAIN) 741 error = 0; 742 743 if (error || (card->current_mrq.tpc == MSPRO_CMD_STOP)) { 744 if (msb->data_dir == READ) { 745 for (cnt = 0; cnt < msb->current_seg; cnt++) 746 t_len += msb->req_sg[cnt].length 747 / msb->page_size; 748 749 if (msb->current_page) 750 t_len += msb->current_page - 1; 751 752 t_len *= msb->page_size; 753 } 754 } else 755 t_len = blk_rq_bytes(msb->block_req); 756 757 dev_dbg(&card->dev, "transferred %x (%d)\n", t_len, error); 758 759 if (error && !t_len) 760 t_len = blk_rq_cur_bytes(msb->block_req); 761 762 chunk = __blk_end_request(msb->block_req, error, t_len); 763 764 error = mspro_block_issue_req(card, chunk); 765 766 if (!error) 767 goto out; 768 else 769 msb->has_request = 0; 770 } else { 771 if (!error) 772 error = -EAGAIN; 773 } 774 775 card->next_request = h_mspro_block_default_bad; 776 complete_all(&card->mrq_complete); 777 out: 778 spin_unlock_irqrestore(&msb->q_lock, flags); 779 return error; 780 } 781 782 static void mspro_block_stop(struct memstick_dev *card) 783 { 784 struct mspro_block_data *msb = memstick_get_drvdata(card); 785 int rc = 0; 786 unsigned long flags; 787 788 while (1) { 789 spin_lock_irqsave(&msb->q_lock, flags); 790 if (!msb->has_request) { 791 blk_stop_queue(msb->queue); 792 rc = 1; 793 } 794 spin_unlock_irqrestore(&msb->q_lock, flags); 795 796 if (rc) 797 break; 798 799 wait_for_completion(&card->mrq_complete); 800 } 801 } 802 803 static void mspro_block_start(struct memstick_dev *card) 804 { 805 struct mspro_block_data *msb = memstick_get_drvdata(card); 806 unsigned long flags; 807 808 spin_lock_irqsave(&msb->q_lock, flags); 809 blk_start_queue(msb->queue); 810 spin_unlock_irqrestore(&msb->q_lock, flags); 811 } 812 813 static int mspro_block_prepare_req(struct request_queue *q, struct request *req) 814 { 815 if (req->cmd_type != REQ_TYPE_FS && 816 req->cmd_type != REQ_TYPE_BLOCK_PC) { 817 blk_dump_rq_flags(req, "MSPro unsupported request"); 818 return BLKPREP_KILL; 819 } 820 821 req->cmd_flags |= REQ_DONTPREP; 822 823 return BLKPREP_OK; 824 } 825 826 static void mspro_block_submit_req(struct request_queue *q) 827 { 828 struct memstick_dev *card = q->queuedata; 829 struct mspro_block_data *msb = memstick_get_drvdata(card); 830 struct request *req = NULL; 831 832 if (msb->has_request) 833 return; 834 835 if (msb->eject) { 836 while ((req = blk_fetch_request(q)) != NULL) 837 __blk_end_request_all(req, -ENODEV); 838 839 return; 840 } 841 842 msb->has_request = 1; 843 if (mspro_block_issue_req(card, 0)) 844 msb->has_request = 0; 845 } 846 847 /*** Initialization ***/ 848 849 static int mspro_block_wait_for_ced(struct memstick_dev *card) 850 { 851 struct mspro_block_data *msb = memstick_get_drvdata(card); 852 853 card->next_request = h_mspro_block_req_init; 854 msb->mrq_handler = h_mspro_block_wait_for_ced; 855 memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1); 856 memstick_new_req(card->host); 857 wait_for_completion(&card->mrq_complete); 858 return card->current_mrq.error; 859 } 860 861 static int mspro_block_set_interface(struct memstick_dev *card, 862 unsigned char sys_reg) 863 { 864 struct memstick_host *host = card->host; 865 struct mspro_block_data *msb = memstick_get_drvdata(card); 866 struct mspro_param_register param = { 867 .system = sys_reg, 868 .data_count = 0, 869 .data_address = 0, 870 .tpc_param = 0 871 }; 872 873 card->next_request = h_mspro_block_req_init; 874 msb->mrq_handler = h_mspro_block_default; 875 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, ¶m, 876 sizeof(param)); 877 memstick_new_req(host); 878 wait_for_completion(&card->mrq_complete); 879 return card->current_mrq.error; 880 } 881 882 static int mspro_block_switch_interface(struct memstick_dev *card) 883 { 884 struct memstick_host *host = card->host; 885 struct mspro_block_data *msb = memstick_get_drvdata(card); 886 int rc = 0; 887 888 try_again: 889 if (msb->caps & MEMSTICK_CAP_PAR4) 890 rc = mspro_block_set_interface(card, MEMSTICK_SYS_PAR4); 891 else 892 return 0; 893 894 if (rc) { 895 printk(KERN_WARNING 896 "%s: could not switch to 4-bit mode, error %d\n", 897 dev_name(&card->dev), rc); 898 return 0; 899 } 900 901 msb->system = MEMSTICK_SYS_PAR4; 902 host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_PAR4); 903 printk(KERN_INFO "%s: switching to 4-bit parallel mode\n", 904 dev_name(&card->dev)); 905 906 if (msb->caps & MEMSTICK_CAP_PAR8) { 907 rc = mspro_block_set_interface(card, MEMSTICK_SYS_PAR8); 908 909 if (!rc) { 910 msb->system = MEMSTICK_SYS_PAR8; 911 host->set_param(host, MEMSTICK_INTERFACE, 912 MEMSTICK_PAR8); 913 printk(KERN_INFO 914 "%s: switching to 8-bit parallel mode\n", 915 dev_name(&card->dev)); 916 } else 917 printk(KERN_WARNING 918 "%s: could not switch to 8-bit mode, error %d\n", 919 dev_name(&card->dev), rc); 920 } 921 922 card->next_request = h_mspro_block_req_init; 923 msb->mrq_handler = h_mspro_block_default; 924 memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1); 925 memstick_new_req(card->host); 926 wait_for_completion(&card->mrq_complete); 927 rc = card->current_mrq.error; 928 929 if (rc) { 930 printk(KERN_WARNING 931 "%s: interface error, trying to fall back to serial\n", 932 dev_name(&card->dev)); 933 msb->system = MEMSTICK_SYS_SERIAL; 934 host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_OFF); 935 msleep(10); 936 host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_ON); 937 host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_SERIAL); 938 939 rc = memstick_set_rw_addr(card); 940 if (!rc) 941 rc = mspro_block_set_interface(card, msb->system); 942 943 if (!rc) { 944 msleep(150); 945 rc = mspro_block_wait_for_ced(card); 946 if (rc) 947 return rc; 948 949 if (msb->caps & MEMSTICK_CAP_PAR8) { 950 msb->caps &= ~MEMSTICK_CAP_PAR8; 951 goto try_again; 952 } 953 } 954 } 955 return rc; 956 } 957 958 /* Memory allocated for attributes by this function should be freed by 959 * mspro_block_data_clear, no matter if the initialization process succeded 960 * or failed. 961 */ 962 static int mspro_block_read_attributes(struct memstick_dev *card) 963 { 964 struct mspro_block_data *msb = memstick_get_drvdata(card); 965 struct mspro_param_register param = { 966 .system = msb->system, 967 .data_count = cpu_to_be16(1), 968 .data_address = 0, 969 .tpc_param = 0 970 }; 971 struct mspro_attribute *attr = NULL; 972 struct mspro_sys_attr *s_attr = NULL; 973 unsigned char *buffer = NULL; 974 int cnt, rc, attr_count; 975 unsigned int addr; 976 unsigned short page_count; 977 978 attr = kmalloc(msb->page_size, GFP_KERNEL); 979 if (!attr) 980 return -ENOMEM; 981 982 sg_init_one(&msb->req_sg[0], attr, msb->page_size); 983 msb->seg_count = 1; 984 msb->current_seg = 0; 985 msb->current_page = 0; 986 msb->data_dir = READ; 987 msb->transfer_cmd = MSPRO_CMD_READ_ATRB; 988 989 card->next_request = h_mspro_block_req_init; 990 msb->mrq_handler = h_mspro_block_transfer_data; 991 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, ¶m, 992 sizeof(param)); 993 memstick_new_req(card->host); 994 wait_for_completion(&card->mrq_complete); 995 if (card->current_mrq.error) { 996 rc = card->current_mrq.error; 997 goto out_free_attr; 998 } 999 1000 if (be16_to_cpu(attr->signature) != MSPRO_BLOCK_SIGNATURE) { 1001 printk(KERN_ERR "%s: unrecognized device signature %x\n", 1002 dev_name(&card->dev), be16_to_cpu(attr->signature)); 1003 rc = -ENODEV; 1004 goto out_free_attr; 1005 } 1006 1007 if (attr->count > MSPRO_BLOCK_MAX_ATTRIBUTES) { 1008 printk(KERN_WARNING "%s: way too many attribute entries\n", 1009 dev_name(&card->dev)); 1010 attr_count = MSPRO_BLOCK_MAX_ATTRIBUTES; 1011 } else 1012 attr_count = attr->count; 1013 1014 msb->attr_group.attrs = kzalloc((attr_count + 1) 1015 * sizeof(struct attribute), 1016 GFP_KERNEL); 1017 if (!msb->attr_group.attrs) { 1018 rc = -ENOMEM; 1019 goto out_free_attr; 1020 } 1021 msb->attr_group.name = "media_attributes"; 1022 1023 buffer = kmalloc(msb->page_size, GFP_KERNEL); 1024 if (!buffer) { 1025 rc = -ENOMEM; 1026 goto out_free_attr; 1027 } 1028 memcpy(buffer, (char *)attr, msb->page_size); 1029 page_count = 1; 1030 1031 for (cnt = 0; cnt < attr_count; ++cnt) { 1032 s_attr = kzalloc(sizeof(struct mspro_sys_attr), GFP_KERNEL); 1033 if (!s_attr) { 1034 rc = -ENOMEM; 1035 goto out_free_buffer; 1036 } 1037 1038 msb->attr_group.attrs[cnt] = &s_attr->dev_attr.attr; 1039 addr = be32_to_cpu(attr->entries[cnt].address); 1040 rc = be32_to_cpu(attr->entries[cnt].size); 1041 dev_dbg(&card->dev, "adding attribute %d: id %x, address %x, " 1042 "size %x\n", cnt, attr->entries[cnt].id, addr, rc); 1043 s_attr->id = attr->entries[cnt].id; 1044 if (mspro_block_attr_name(s_attr->id)) 1045 snprintf(s_attr->name, sizeof(s_attr->name), "%s", 1046 mspro_block_attr_name(attr->entries[cnt].id)); 1047 else 1048 snprintf(s_attr->name, sizeof(s_attr->name), 1049 "attr_x%02x", attr->entries[cnt].id); 1050 1051 s_attr->dev_attr.attr.name = s_attr->name; 1052 s_attr->dev_attr.attr.mode = S_IRUGO; 1053 s_attr->dev_attr.show = mspro_block_attr_show(s_attr->id); 1054 1055 if (!rc) 1056 continue; 1057 1058 s_attr->size = rc; 1059 s_attr->data = kmalloc(rc, GFP_KERNEL); 1060 if (!s_attr->data) { 1061 rc = -ENOMEM; 1062 goto out_free_buffer; 1063 } 1064 1065 if (((addr / msb->page_size) 1066 == be32_to_cpu(param.data_address)) 1067 && (((addr + rc - 1) / msb->page_size) 1068 == be32_to_cpu(param.data_address))) { 1069 memcpy(s_attr->data, buffer + addr % msb->page_size, 1070 rc); 1071 continue; 1072 } 1073 1074 if (page_count <= (rc / msb->page_size)) { 1075 kfree(buffer); 1076 page_count = (rc / msb->page_size) + 1; 1077 buffer = kmalloc(page_count * msb->page_size, 1078 GFP_KERNEL); 1079 if (!buffer) { 1080 rc = -ENOMEM; 1081 goto out_free_attr; 1082 } 1083 } 1084 1085 param.system = msb->system; 1086 param.data_count = cpu_to_be16((rc / msb->page_size) + 1); 1087 param.data_address = cpu_to_be32(addr / msb->page_size); 1088 param.tpc_param = 0; 1089 1090 sg_init_one(&msb->req_sg[0], buffer, 1091 be16_to_cpu(param.data_count) * msb->page_size); 1092 msb->seg_count = 1; 1093 msb->current_seg = 0; 1094 msb->current_page = 0; 1095 msb->data_dir = READ; 1096 msb->transfer_cmd = MSPRO_CMD_READ_ATRB; 1097 1098 dev_dbg(&card->dev, "reading attribute pages %x, %x\n", 1099 be32_to_cpu(param.data_address), 1100 be16_to_cpu(param.data_count)); 1101 1102 card->next_request = h_mspro_block_req_init; 1103 msb->mrq_handler = h_mspro_block_transfer_data; 1104 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, 1105 (char *)¶m, sizeof(param)); 1106 memstick_new_req(card->host); 1107 wait_for_completion(&card->mrq_complete); 1108 if (card->current_mrq.error) { 1109 rc = card->current_mrq.error; 1110 goto out_free_buffer; 1111 } 1112 1113 memcpy(s_attr->data, buffer + addr % msb->page_size, rc); 1114 } 1115 1116 rc = 0; 1117 out_free_buffer: 1118 kfree(buffer); 1119 out_free_attr: 1120 kfree(attr); 1121 return rc; 1122 } 1123 1124 static int mspro_block_init_card(struct memstick_dev *card) 1125 { 1126 struct mspro_block_data *msb = memstick_get_drvdata(card); 1127 struct memstick_host *host = card->host; 1128 int rc = 0; 1129 1130 msb->system = MEMSTICK_SYS_SERIAL; 1131 card->reg_addr.r_offset = offsetof(struct mspro_register, status); 1132 card->reg_addr.r_length = sizeof(struct ms_status_register); 1133 card->reg_addr.w_offset = offsetof(struct mspro_register, param); 1134 card->reg_addr.w_length = sizeof(struct mspro_param_register); 1135 1136 if (memstick_set_rw_addr(card)) 1137 return -EIO; 1138 1139 msb->caps = host->caps; 1140 1141 msleep(150); 1142 rc = mspro_block_wait_for_ced(card); 1143 if (rc) 1144 return rc; 1145 1146 rc = mspro_block_switch_interface(card); 1147 if (rc) 1148 return rc; 1149 1150 dev_dbg(&card->dev, "card activated\n"); 1151 if (msb->system != MEMSTICK_SYS_SERIAL) 1152 msb->caps |= MEMSTICK_CAP_AUTO_GET_INT; 1153 1154 card->next_request = h_mspro_block_req_init; 1155 msb->mrq_handler = h_mspro_block_get_ro; 1156 memstick_init_req(&card->current_mrq, MS_TPC_READ_REG, NULL, 1157 sizeof(struct ms_status_register)); 1158 memstick_new_req(card->host); 1159 wait_for_completion(&card->mrq_complete); 1160 if (card->current_mrq.error) 1161 return card->current_mrq.error; 1162 1163 dev_dbg(&card->dev, "card r/w status %d\n", msb->read_only ? 0 : 1); 1164 1165 msb->page_size = 512; 1166 rc = mspro_block_read_attributes(card); 1167 if (rc) 1168 return rc; 1169 1170 dev_dbg(&card->dev, "attributes loaded\n"); 1171 return 0; 1172 1173 } 1174 1175 static int mspro_block_init_disk(struct memstick_dev *card) 1176 { 1177 struct mspro_block_data *msb = memstick_get_drvdata(card); 1178 struct memstick_host *host = card->host; 1179 struct mspro_devinfo *dev_info = NULL; 1180 struct mspro_sys_info *sys_info = NULL; 1181 struct mspro_sys_attr *s_attr = NULL; 1182 int rc, disk_id; 1183 u64 limit = BLK_BOUNCE_HIGH; 1184 unsigned long capacity; 1185 1186 if (host->dev.dma_mask && *(host->dev.dma_mask)) 1187 limit = *(host->dev.dma_mask); 1188 1189 for (rc = 0; msb->attr_group.attrs[rc]; ++rc) { 1190 s_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[rc]); 1191 1192 if (s_attr->id == MSPRO_BLOCK_ID_DEVINFO) 1193 dev_info = s_attr->data; 1194 else if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO) 1195 sys_info = s_attr->data; 1196 } 1197 1198 if (!dev_info || !sys_info) 1199 return -ENODEV; 1200 1201 msb->cylinders = be16_to_cpu(dev_info->cylinders); 1202 msb->heads = be16_to_cpu(dev_info->heads); 1203 msb->sectors_per_track = be16_to_cpu(dev_info->sectors_per_track); 1204 1205 msb->page_size = be16_to_cpu(sys_info->unit_size); 1206 1207 if (!idr_pre_get(&mspro_block_disk_idr, GFP_KERNEL)) 1208 return -ENOMEM; 1209 1210 mutex_lock(&mspro_block_disk_lock); 1211 rc = idr_get_new(&mspro_block_disk_idr, card, &disk_id); 1212 mutex_unlock(&mspro_block_disk_lock); 1213 1214 if (rc) 1215 return rc; 1216 1217 if ((disk_id << MSPRO_BLOCK_PART_SHIFT) > 255) { 1218 rc = -ENOSPC; 1219 goto out_release_id; 1220 } 1221 1222 msb->disk = alloc_disk(1 << MSPRO_BLOCK_PART_SHIFT); 1223 if (!msb->disk) { 1224 rc = -ENOMEM; 1225 goto out_release_id; 1226 } 1227 1228 msb->queue = blk_init_queue(mspro_block_submit_req, &msb->q_lock); 1229 if (!msb->queue) { 1230 rc = -ENOMEM; 1231 goto out_put_disk; 1232 } 1233 1234 msb->queue->queuedata = card; 1235 blk_queue_prep_rq(msb->queue, mspro_block_prepare_req); 1236 1237 blk_queue_bounce_limit(msb->queue, limit); 1238 blk_queue_max_hw_sectors(msb->queue, MSPRO_BLOCK_MAX_PAGES); 1239 blk_queue_max_segments(msb->queue, MSPRO_BLOCK_MAX_SEGS); 1240 blk_queue_max_segment_size(msb->queue, 1241 MSPRO_BLOCK_MAX_PAGES * msb->page_size); 1242 1243 msb->disk->major = major; 1244 msb->disk->first_minor = disk_id << MSPRO_BLOCK_PART_SHIFT; 1245 msb->disk->fops = &ms_block_bdops; 1246 msb->usage_count = 1; 1247 msb->disk->private_data = msb; 1248 msb->disk->queue = msb->queue; 1249 msb->disk->driverfs_dev = &card->dev; 1250 1251 sprintf(msb->disk->disk_name, "mspblk%d", disk_id); 1252 1253 blk_queue_logical_block_size(msb->queue, msb->page_size); 1254 1255 capacity = be16_to_cpu(sys_info->user_block_count); 1256 capacity *= be16_to_cpu(sys_info->block_size); 1257 capacity *= msb->page_size >> 9; 1258 set_capacity(msb->disk, capacity); 1259 dev_dbg(&card->dev, "capacity set %ld\n", capacity); 1260 1261 add_disk(msb->disk); 1262 msb->active = 1; 1263 return 0; 1264 1265 out_put_disk: 1266 put_disk(msb->disk); 1267 out_release_id: 1268 mutex_lock(&mspro_block_disk_lock); 1269 idr_remove(&mspro_block_disk_idr, disk_id); 1270 mutex_unlock(&mspro_block_disk_lock); 1271 return rc; 1272 } 1273 1274 static void mspro_block_data_clear(struct mspro_block_data *msb) 1275 { 1276 int cnt; 1277 struct mspro_sys_attr *s_attr; 1278 1279 if (msb->attr_group.attrs) { 1280 for (cnt = 0; msb->attr_group.attrs[cnt]; ++cnt) { 1281 s_attr = mspro_from_sysfs_attr(msb->attr_group 1282 .attrs[cnt]); 1283 kfree(s_attr->data); 1284 kfree(s_attr); 1285 } 1286 kfree(msb->attr_group.attrs); 1287 } 1288 1289 msb->card = NULL; 1290 } 1291 1292 static int mspro_block_check_card(struct memstick_dev *card) 1293 { 1294 struct mspro_block_data *msb = memstick_get_drvdata(card); 1295 1296 return (msb->active == 1); 1297 } 1298 1299 static int mspro_block_probe(struct memstick_dev *card) 1300 { 1301 struct mspro_block_data *msb; 1302 int rc = 0; 1303 1304 msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL); 1305 if (!msb) 1306 return -ENOMEM; 1307 memstick_set_drvdata(card, msb); 1308 msb->card = card; 1309 spin_lock_init(&msb->q_lock); 1310 1311 rc = mspro_block_init_card(card); 1312 1313 if (rc) 1314 goto out_free; 1315 1316 rc = sysfs_create_group(&card->dev.kobj, &msb->attr_group); 1317 if (rc) 1318 goto out_free; 1319 1320 rc = mspro_block_init_disk(card); 1321 if (!rc) { 1322 card->check = mspro_block_check_card; 1323 card->stop = mspro_block_stop; 1324 card->start = mspro_block_start; 1325 return 0; 1326 } 1327 1328 sysfs_remove_group(&card->dev.kobj, &msb->attr_group); 1329 out_free: 1330 memstick_set_drvdata(card, NULL); 1331 mspro_block_data_clear(msb); 1332 kfree(msb); 1333 return rc; 1334 } 1335 1336 static void mspro_block_remove(struct memstick_dev *card) 1337 { 1338 struct mspro_block_data *msb = memstick_get_drvdata(card); 1339 unsigned long flags; 1340 1341 del_gendisk(msb->disk); 1342 dev_dbg(&card->dev, "mspro block remove\n"); 1343 spin_lock_irqsave(&msb->q_lock, flags); 1344 msb->eject = 1; 1345 blk_start_queue(msb->queue); 1346 spin_unlock_irqrestore(&msb->q_lock, flags); 1347 1348 blk_cleanup_queue(msb->queue); 1349 msb->queue = NULL; 1350 1351 sysfs_remove_group(&card->dev.kobj, &msb->attr_group); 1352 1353 mutex_lock(&mspro_block_disk_lock); 1354 mspro_block_data_clear(msb); 1355 mutex_unlock(&mspro_block_disk_lock); 1356 1357 mspro_block_disk_release(msb->disk); 1358 memstick_set_drvdata(card, NULL); 1359 } 1360 1361 #ifdef CONFIG_PM 1362 1363 static int mspro_block_suspend(struct memstick_dev *card, pm_message_t state) 1364 { 1365 struct mspro_block_data *msb = memstick_get_drvdata(card); 1366 unsigned long flags; 1367 1368 spin_lock_irqsave(&msb->q_lock, flags); 1369 blk_stop_queue(msb->queue); 1370 msb->active = 0; 1371 spin_unlock_irqrestore(&msb->q_lock, flags); 1372 1373 return 0; 1374 } 1375 1376 static int mspro_block_resume(struct memstick_dev *card) 1377 { 1378 struct mspro_block_data *msb = memstick_get_drvdata(card); 1379 unsigned long flags; 1380 int rc = 0; 1381 1382 #ifdef CONFIG_MEMSTICK_UNSAFE_RESUME 1383 1384 struct mspro_block_data *new_msb; 1385 struct memstick_host *host = card->host; 1386 struct mspro_sys_attr *s_attr, *r_attr; 1387 unsigned char cnt; 1388 1389 mutex_lock(&host->lock); 1390 new_msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL); 1391 if (!new_msb) { 1392 rc = -ENOMEM; 1393 goto out_unlock; 1394 } 1395 1396 new_msb->card = card; 1397 memstick_set_drvdata(card, new_msb); 1398 if (mspro_block_init_card(card)) 1399 goto out_free; 1400 1401 for (cnt = 0; new_msb->attr_group.attrs[cnt] 1402 && msb->attr_group.attrs[cnt]; ++cnt) { 1403 s_attr = mspro_from_sysfs_attr(new_msb->attr_group.attrs[cnt]); 1404 r_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[cnt]); 1405 1406 if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO 1407 && r_attr->id == s_attr->id) { 1408 if (memcmp(s_attr->data, r_attr->data, s_attr->size)) 1409 break; 1410 1411 msb->active = 1; 1412 break; 1413 } 1414 } 1415 1416 out_free: 1417 memstick_set_drvdata(card, msb); 1418 mspro_block_data_clear(new_msb); 1419 kfree(new_msb); 1420 out_unlock: 1421 mutex_unlock(&host->lock); 1422 1423 #endif /* CONFIG_MEMSTICK_UNSAFE_RESUME */ 1424 1425 spin_lock_irqsave(&msb->q_lock, flags); 1426 blk_start_queue(msb->queue); 1427 spin_unlock_irqrestore(&msb->q_lock, flags); 1428 return rc; 1429 } 1430 1431 #else 1432 1433 #define mspro_block_suspend NULL 1434 #define mspro_block_resume NULL 1435 1436 #endif /* CONFIG_PM */ 1437 1438 static struct memstick_device_id mspro_block_id_tbl[] = { 1439 {MEMSTICK_MATCH_ALL, MEMSTICK_TYPE_PRO, MEMSTICK_CATEGORY_STORAGE_DUO, 1440 MEMSTICK_CLASS_DUO}, 1441 {} 1442 }; 1443 1444 1445 static struct memstick_driver mspro_block_driver = { 1446 .driver = { 1447 .name = DRIVER_NAME, 1448 .owner = THIS_MODULE 1449 }, 1450 .id_table = mspro_block_id_tbl, 1451 .probe = mspro_block_probe, 1452 .remove = mspro_block_remove, 1453 .suspend = mspro_block_suspend, 1454 .resume = mspro_block_resume 1455 }; 1456 1457 static int __init mspro_block_init(void) 1458 { 1459 int rc = -ENOMEM; 1460 1461 rc = register_blkdev(major, DRIVER_NAME); 1462 if (rc < 0) { 1463 printk(KERN_ERR DRIVER_NAME ": failed to register " 1464 "major %d, error %d\n", major, rc); 1465 return rc; 1466 } 1467 if (!major) 1468 major = rc; 1469 1470 rc = memstick_register_driver(&mspro_block_driver); 1471 if (rc) 1472 unregister_blkdev(major, DRIVER_NAME); 1473 return rc; 1474 } 1475 1476 static void __exit mspro_block_exit(void) 1477 { 1478 memstick_unregister_driver(&mspro_block_driver); 1479 unregister_blkdev(major, DRIVER_NAME); 1480 idr_destroy(&mspro_block_disk_idr); 1481 } 1482 1483 module_init(mspro_block_init); 1484 module_exit(mspro_block_exit); 1485 1486 MODULE_LICENSE("GPL"); 1487 MODULE_AUTHOR("Alex Dubov"); 1488 MODULE_DESCRIPTION("Sony MemoryStickPro block device driver"); 1489 MODULE_DEVICE_TABLE(memstick, mspro_block_id_tbl); 1490