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/mutex.h> 22#include <linux/memstick.h> 23#include <linux/module.h> 24 25#define DRIVER_NAME "mspro_block" 26 27static int major; 28module_param(major, int, 0644); 29 30#define MSPRO_BLOCK_MAX_SEGS 32 31#define MSPRO_BLOCK_MAX_PAGES ((2 << 16) - 1) 32 33#define MSPRO_BLOCK_SIGNATURE 0xa5c3 34#define MSPRO_BLOCK_MAX_ATTRIBUTES 41 35 36#define MSPRO_BLOCK_PART_SHIFT 3 37 38enum { 39 MSPRO_BLOCK_ID_SYSINFO = 0x10, 40 MSPRO_BLOCK_ID_MODELNAME = 0x15, 41 MSPRO_BLOCK_ID_MBR = 0x20, 42 MSPRO_BLOCK_ID_PBR16 = 0x21, 43 MSPRO_BLOCK_ID_PBR32 = 0x22, 44 MSPRO_BLOCK_ID_SPECFILEVALUES1 = 0x25, 45 MSPRO_BLOCK_ID_SPECFILEVALUES2 = 0x26, 46 MSPRO_BLOCK_ID_DEVINFO = 0x30 47}; 48 49struct mspro_sys_attr { 50 size_t size; 51 void *data; 52 unsigned char id; 53 char name[32]; 54 struct device_attribute dev_attr; 55}; 56 57struct mspro_attr_entry { 58 __be32 address; 59 __be32 size; 60 unsigned char id; 61 unsigned char reserved[3]; 62} __attribute__((packed)); 63 64struct mspro_attribute { 65 __be16 signature; 66 unsigned short version; 67 unsigned char count; 68 unsigned char reserved[11]; 69 struct mspro_attr_entry entries[]; 70} __attribute__((packed)); 71 72struct mspro_sys_info { 73 unsigned char class; 74 unsigned char reserved0; 75 __be16 block_size; 76 __be16 block_count; 77 __be16 user_block_count; 78 __be16 page_size; 79 unsigned char reserved1[2]; 80 unsigned char assembly_date[8]; 81 __be32 serial_number; 82 unsigned char assembly_maker_code; 83 unsigned char assembly_model_code[3]; 84 __be16 memory_maker_code; 85 __be16 memory_model_code; 86 unsigned char reserved2[4]; 87 unsigned char vcc; 88 unsigned char vpp; 89 __be16 controller_number; 90 __be16 controller_function; 91 __be16 start_sector; 92 __be16 unit_size; 93 unsigned char ms_sub_class; 94 unsigned char reserved3[4]; 95 unsigned char interface_type; 96 __be16 controller_code; 97 unsigned char format_type; 98 unsigned char reserved4; 99 unsigned char device_type; 100 unsigned char reserved5[7]; 101 unsigned char mspro_id[16]; 102 unsigned char reserved6[16]; 103} __attribute__((packed)); 104 105struct mspro_mbr { 106 unsigned char boot_partition; 107 unsigned char start_head; 108 unsigned char start_sector; 109 unsigned char start_cylinder; 110 unsigned char partition_type; 111 unsigned char end_head; 112 unsigned char end_sector; 113 unsigned char end_cylinder; 114 unsigned int start_sectors; 115 unsigned int sectors_per_partition; 116} __attribute__((packed)); 117 118struct mspro_specfile { 119 char name[8]; 120 char ext[3]; 121 unsigned char attr; 122 unsigned char reserved[10]; 123 unsigned short time; 124 unsigned short date; 125 unsigned short cluster; 126 unsigned int size; 127} __attribute__((packed)); 128 129struct mspro_devinfo { 130 __be16 cylinders; 131 __be16 heads; 132 __be16 bytes_per_track; 133 __be16 bytes_per_sector; 134 __be16 sectors_per_track; 135 unsigned char reserved[6]; 136} __attribute__((packed)); 137 138struct mspro_block_data { 139 struct memstick_dev *card; 140 unsigned int usage_count; 141 unsigned int caps; 142 struct gendisk *disk; 143 struct request_queue *queue; 144 struct request *block_req; 145 spinlock_t q_lock; 146 147 unsigned short page_size; 148 unsigned short cylinders; 149 unsigned short heads; 150 unsigned short sectors_per_track; 151 152 unsigned char system; 153 unsigned char read_only:1, 154 eject:1, 155 has_request:1, 156 data_dir:1, 157 active:1; 158 unsigned char transfer_cmd; 159 160 int (*mrq_handler)(struct memstick_dev *card, 161 struct memstick_request **mrq); 162 163 164 /* Default request setup function for data access method preferred by 165 * this host instance. 166 */ 167 void (*setup_transfer)(struct memstick_dev *card, 168 u64 offset, size_t length); 169 170 struct attribute_group attr_group; 171 172 struct scatterlist req_sg[MSPRO_BLOCK_MAX_SEGS]; 173 unsigned int seg_count; 174 unsigned int current_seg; 175 unsigned int current_page; 176}; 177 178static DEFINE_IDR(mspro_block_disk_idr); 179static DEFINE_MUTEX(mspro_block_disk_lock); 180 181static int mspro_block_complete_req(struct memstick_dev *card, int error); 182 183/*** Block device ***/ 184 185static int mspro_block_bd_open(struct block_device *bdev, fmode_t mode) 186{ 187 struct gendisk *disk = bdev->bd_disk; 188 struct mspro_block_data *msb = disk->private_data; 189 int rc = -ENXIO; 190 191 mutex_lock(&mspro_block_disk_lock); 192 193 if (msb && msb->card) { 194 msb->usage_count++; 195 if ((mode & FMODE_WRITE) && msb->read_only) 196 rc = -EROFS; 197 else 198 rc = 0; 199 } 200 201 mutex_unlock(&mspro_block_disk_lock); 202 203 return rc; 204} 205 206 207static void mspro_block_disk_release(struct gendisk *disk) 208{ 209 struct mspro_block_data *msb = disk->private_data; 210 int disk_id = MINOR(disk_devt(disk)) >> MSPRO_BLOCK_PART_SHIFT; 211 212 mutex_lock(&mspro_block_disk_lock); 213 214 if (msb) { 215 if (msb->usage_count) 216 msb->usage_count--; 217 218 if (!msb->usage_count) { 219 kfree(msb); 220 disk->private_data = NULL; 221 idr_remove(&mspro_block_disk_idr, disk_id); 222 put_disk(disk); 223 } 224 } 225 226 mutex_unlock(&mspro_block_disk_lock); 227} 228 229static void mspro_block_bd_release(struct gendisk *disk, fmode_t mode) 230{ 231 mspro_block_disk_release(disk); 232} 233 234static 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 246static 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 255static 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 262static 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 286typedef ssize_t (*sysfs_show_t)(struct device *dev, 287 struct device_attribute *attr, 288 char *buffer); 289 290static 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 312static 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 394static 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 405static 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 439static 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 474static 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 497static 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 525static 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 535static 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 541static int h_mspro_block_default_bad(struct memstick_dev *card, 542 struct memstick_request **mrq) 543{ 544 return -ENXIO; 545} 546 547static 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 563static 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 578static 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]; 602has_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/*** Transfer setup functions for different access methods. ***/ 666 667/** Setup data transfer request for SET_CMD TPC with arguments in card 668 * registers. 669 * 670 * @card Current media instance 671 * @offset Target data offset in bytes 672 * @length Required transfer length in bytes. 673 */ 674static void h_mspro_block_setup_cmd(struct memstick_dev *card, u64 offset, 675 size_t length) 676{ 677 struct mspro_block_data *msb = memstick_get_drvdata(card); 678 struct mspro_param_register param = { 679 .system = msb->system, 680 .data_count = cpu_to_be16((uint16_t)(length / msb->page_size)), 681 /* ISO C90 warning precludes direct initialization for now. */ 682 .data_address = 0, 683 .tpc_param = 0 684 }; 685 686 do_div(offset, msb->page_size); 687 param.data_address = cpu_to_be32((uint32_t)offset); 688 689 card->next_request = h_mspro_block_req_init; 690 msb->mrq_handler = h_mspro_block_transfer_data; 691 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, 692 ¶m, sizeof(param)); 693} 694 695/*** Data transfer ***/ 696 697static int mspro_block_issue_req(struct memstick_dev *card, int chunk) 698{ 699 struct mspro_block_data *msb = memstick_get_drvdata(card); 700 u64 t_off; 701 unsigned int count; 702 703try_again: 704 while (chunk) { 705 msb->current_page = 0; 706 msb->current_seg = 0; 707 msb->seg_count = blk_rq_map_sg(msb->block_req->q, 708 msb->block_req, 709 msb->req_sg); 710 711 if (!msb->seg_count) { 712 chunk = __blk_end_request_cur(msb->block_req, -ENOMEM); 713 continue; 714 } 715 716 t_off = blk_rq_pos(msb->block_req); 717 t_off <<= 9; 718 count = blk_rq_bytes(msb->block_req); 719 720 msb->setup_transfer(card, t_off, count); 721 722 msb->data_dir = rq_data_dir(msb->block_req); 723 msb->transfer_cmd = msb->data_dir == READ 724 ? MSPRO_CMD_READ_DATA 725 : MSPRO_CMD_WRITE_DATA; 726 727 memstick_new_req(card->host); 728 return 0; 729 } 730 731 dev_dbg(&card->dev, "blk_fetch\n"); 732 msb->block_req = blk_fetch_request(msb->queue); 733 if (!msb->block_req) { 734 dev_dbg(&card->dev, "issue end\n"); 735 return -EAGAIN; 736 } 737 738 dev_dbg(&card->dev, "trying again\n"); 739 chunk = 1; 740 goto try_again; 741} 742 743static int mspro_block_complete_req(struct memstick_dev *card, int error) 744{ 745 struct mspro_block_data *msb = memstick_get_drvdata(card); 746 int chunk, cnt; 747 unsigned int t_len = 0; 748 unsigned long flags; 749 750 spin_lock_irqsave(&msb->q_lock, flags); 751 dev_dbg(&card->dev, "complete %d, %d\n", msb->has_request ? 1 : 0, 752 error); 753 754 if (msb->has_request) { 755 /* Nothing to do - not really an error */ 756 if (error == -EAGAIN) 757 error = 0; 758 759 if (error || (card->current_mrq.tpc == MSPRO_CMD_STOP)) { 760 if (msb->data_dir == READ) { 761 for (cnt = 0; cnt < msb->current_seg; cnt++) { 762 t_len += msb->req_sg[cnt].length 763 / msb->page_size; 764 765 if (msb->current_page) 766 t_len += msb->current_page - 1; 767 768 t_len *= msb->page_size; 769 } 770 } 771 } else 772 t_len = blk_rq_bytes(msb->block_req); 773 774 dev_dbg(&card->dev, "transferred %x (%d)\n", t_len, error); 775 776 if (error && !t_len) 777 t_len = blk_rq_cur_bytes(msb->block_req); 778 779 chunk = __blk_end_request(msb->block_req, error, t_len); 780 781 error = mspro_block_issue_req(card, chunk); 782 783 if (!error) 784 goto out; 785 else 786 msb->has_request = 0; 787 } else { 788 if (!error) 789 error = -EAGAIN; 790 } 791 792 card->next_request = h_mspro_block_default_bad; 793 complete_all(&card->mrq_complete); 794out: 795 spin_unlock_irqrestore(&msb->q_lock, flags); 796 return error; 797} 798 799static void mspro_block_stop(struct memstick_dev *card) 800{ 801 struct mspro_block_data *msb = memstick_get_drvdata(card); 802 int rc = 0; 803 unsigned long flags; 804 805 while (1) { 806 spin_lock_irqsave(&msb->q_lock, flags); 807 if (!msb->has_request) { 808 blk_stop_queue(msb->queue); 809 rc = 1; 810 } 811 spin_unlock_irqrestore(&msb->q_lock, flags); 812 813 if (rc) 814 break; 815 816 wait_for_completion(&card->mrq_complete); 817 } 818} 819 820static void mspro_block_start(struct memstick_dev *card) 821{ 822 struct mspro_block_data *msb = memstick_get_drvdata(card); 823 unsigned long flags; 824 825 spin_lock_irqsave(&msb->q_lock, flags); 826 blk_start_queue(msb->queue); 827 spin_unlock_irqrestore(&msb->q_lock, flags); 828} 829 830static int mspro_block_prepare_req(struct request_queue *q, struct request *req) 831{ 832 if (req->cmd_type != REQ_TYPE_FS && 833 req->cmd_type != REQ_TYPE_BLOCK_PC) { 834 blk_dump_rq_flags(req, "MSPro unsupported request"); 835 return BLKPREP_KILL; 836 } 837 838 req->cmd_flags |= REQ_DONTPREP; 839 840 return BLKPREP_OK; 841} 842 843static void mspro_block_submit_req(struct request_queue *q) 844{ 845 struct memstick_dev *card = q->queuedata; 846 struct mspro_block_data *msb = memstick_get_drvdata(card); 847 struct request *req = NULL; 848 849 if (msb->has_request) 850 return; 851 852 if (msb->eject) { 853 while ((req = blk_fetch_request(q)) != NULL) 854 __blk_end_request_all(req, -ENODEV); 855 856 return; 857 } 858 859 msb->has_request = 1; 860 if (mspro_block_issue_req(card, 0)) 861 msb->has_request = 0; 862} 863 864/*** Initialization ***/ 865 866static int mspro_block_wait_for_ced(struct memstick_dev *card) 867{ 868 struct mspro_block_data *msb = memstick_get_drvdata(card); 869 870 card->next_request = h_mspro_block_req_init; 871 msb->mrq_handler = h_mspro_block_wait_for_ced; 872 memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1); 873 memstick_new_req(card->host); 874 wait_for_completion(&card->mrq_complete); 875 return card->current_mrq.error; 876} 877 878static int mspro_block_set_interface(struct memstick_dev *card, 879 unsigned char sys_reg) 880{ 881 struct memstick_host *host = card->host; 882 struct mspro_block_data *msb = memstick_get_drvdata(card); 883 struct mspro_param_register param = { 884 .system = sys_reg, 885 .data_count = 0, 886 .data_address = 0, 887 .tpc_param = 0 888 }; 889 890 card->next_request = h_mspro_block_req_init; 891 msb->mrq_handler = h_mspro_block_default; 892 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, ¶m, 893 sizeof(param)); 894 memstick_new_req(host); 895 wait_for_completion(&card->mrq_complete); 896 return card->current_mrq.error; 897} 898 899static int mspro_block_switch_interface(struct memstick_dev *card) 900{ 901 struct memstick_host *host = card->host; 902 struct mspro_block_data *msb = memstick_get_drvdata(card); 903 int rc = 0; 904 905try_again: 906 if (msb->caps & MEMSTICK_CAP_PAR4) 907 rc = mspro_block_set_interface(card, MEMSTICK_SYS_PAR4); 908 else 909 return 0; 910 911 if (rc) { 912 printk(KERN_WARNING 913 "%s: could not switch to 4-bit mode, error %d\n", 914 dev_name(&card->dev), rc); 915 return 0; 916 } 917 918 msb->system = MEMSTICK_SYS_PAR4; 919 host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_PAR4); 920 printk(KERN_INFO "%s: switching to 4-bit parallel mode\n", 921 dev_name(&card->dev)); 922 923 if (msb->caps & MEMSTICK_CAP_PAR8) { 924 rc = mspro_block_set_interface(card, MEMSTICK_SYS_PAR8); 925 926 if (!rc) { 927 msb->system = MEMSTICK_SYS_PAR8; 928 host->set_param(host, MEMSTICK_INTERFACE, 929 MEMSTICK_PAR8); 930 printk(KERN_INFO 931 "%s: switching to 8-bit parallel mode\n", 932 dev_name(&card->dev)); 933 } else 934 printk(KERN_WARNING 935 "%s: could not switch to 8-bit mode, error %d\n", 936 dev_name(&card->dev), rc); 937 } 938 939 card->next_request = h_mspro_block_req_init; 940 msb->mrq_handler = h_mspro_block_default; 941 memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1); 942 memstick_new_req(card->host); 943 wait_for_completion(&card->mrq_complete); 944 rc = card->current_mrq.error; 945 946 if (rc) { 947 printk(KERN_WARNING 948 "%s: interface error, trying to fall back to serial\n", 949 dev_name(&card->dev)); 950 msb->system = MEMSTICK_SYS_SERIAL; 951 host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_OFF); 952 msleep(10); 953 host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_ON); 954 host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_SERIAL); 955 956 rc = memstick_set_rw_addr(card); 957 if (!rc) 958 rc = mspro_block_set_interface(card, msb->system); 959 960 if (!rc) { 961 msleep(150); 962 rc = mspro_block_wait_for_ced(card); 963 if (rc) 964 return rc; 965 966 if (msb->caps & MEMSTICK_CAP_PAR8) { 967 msb->caps &= ~MEMSTICK_CAP_PAR8; 968 goto try_again; 969 } 970 } 971 } 972 return rc; 973} 974 975/* Memory allocated for attributes by this function should be freed by 976 * mspro_block_data_clear, no matter if the initialization process succeeded 977 * or failed. 978 */ 979static int mspro_block_read_attributes(struct memstick_dev *card) 980{ 981 struct mspro_block_data *msb = memstick_get_drvdata(card); 982 struct mspro_attribute *attr = NULL; 983 struct mspro_sys_attr *s_attr = NULL; 984 unsigned char *buffer = NULL; 985 int cnt, rc, attr_count; 986 /* While normally physical device offsets, represented here by 987 * attr_offset and attr_len will be of large numeric types, we can be 988 * sure, that attributes are close enough to the beginning of the 989 * device, to save ourselves some trouble. 990 */ 991 unsigned int addr, attr_offset = 0, attr_len = msb->page_size; 992 993 attr = kmalloc(msb->page_size, GFP_KERNEL); 994 if (!attr) 995 return -ENOMEM; 996 997 sg_init_one(&msb->req_sg[0], attr, msb->page_size); 998 msb->seg_count = 1; 999 msb->current_seg = 0; 1000 msb->current_page = 0; 1001 msb->data_dir = READ; 1002 msb->transfer_cmd = MSPRO_CMD_READ_ATRB; 1003 1004 msb->setup_transfer(card, attr_offset, attr_len); 1005 1006 memstick_new_req(card->host); 1007 wait_for_completion(&card->mrq_complete); 1008 if (card->current_mrq.error) { 1009 rc = card->current_mrq.error; 1010 goto out_free_attr; 1011 } 1012 1013 if (be16_to_cpu(attr->signature) != MSPRO_BLOCK_SIGNATURE) { 1014 printk(KERN_ERR "%s: unrecognized device signature %x\n", 1015 dev_name(&card->dev), be16_to_cpu(attr->signature)); 1016 rc = -ENODEV; 1017 goto out_free_attr; 1018 } 1019 1020 if (attr->count > MSPRO_BLOCK_MAX_ATTRIBUTES) { 1021 printk(KERN_WARNING "%s: way too many attribute entries\n", 1022 dev_name(&card->dev)); 1023 attr_count = MSPRO_BLOCK_MAX_ATTRIBUTES; 1024 } else 1025 attr_count = attr->count; 1026 1027 msb->attr_group.attrs = kcalloc(attr_count + 1, 1028 sizeof(*msb->attr_group.attrs), 1029 GFP_KERNEL); 1030 if (!msb->attr_group.attrs) { 1031 rc = -ENOMEM; 1032 goto out_free_attr; 1033 } 1034 msb->attr_group.name = "media_attributes"; 1035 1036 buffer = kmalloc(attr_len, GFP_KERNEL); 1037 if (!buffer) { 1038 rc = -ENOMEM; 1039 goto out_free_attr; 1040 } 1041 memcpy(buffer, (char *)attr, attr_len); 1042 1043 for (cnt = 0; cnt < attr_count; ++cnt) { 1044 s_attr = kzalloc(sizeof(struct mspro_sys_attr), GFP_KERNEL); 1045 if (!s_attr) { 1046 rc = -ENOMEM; 1047 goto out_free_buffer; 1048 } 1049 1050 msb->attr_group.attrs[cnt] = &s_attr->dev_attr.attr; 1051 addr = be32_to_cpu(attr->entries[cnt].address); 1052 s_attr->size = be32_to_cpu(attr->entries[cnt].size); 1053 dev_dbg(&card->dev, "adding attribute %d: id %x, address %x, " 1054 "size %zx\n", cnt, attr->entries[cnt].id, addr, 1055 s_attr->size); 1056 s_attr->id = attr->entries[cnt].id; 1057 if (mspro_block_attr_name(s_attr->id)) 1058 snprintf(s_attr->name, sizeof(s_attr->name), "%s", 1059 mspro_block_attr_name(attr->entries[cnt].id)); 1060 else 1061 snprintf(s_attr->name, sizeof(s_attr->name), 1062 "attr_x%02x", attr->entries[cnt].id); 1063 1064 sysfs_attr_init(&s_attr->dev_attr.attr); 1065 s_attr->dev_attr.attr.name = s_attr->name; 1066 s_attr->dev_attr.attr.mode = S_IRUGO; 1067 s_attr->dev_attr.show = mspro_block_attr_show(s_attr->id); 1068 1069 if (!s_attr->size) 1070 continue; 1071 1072 s_attr->data = kmalloc(s_attr->size, GFP_KERNEL); 1073 if (!s_attr->data) { 1074 rc = -ENOMEM; 1075 goto out_free_buffer; 1076 } 1077 1078 if (((addr / msb->page_size) == (attr_offset / msb->page_size)) 1079 && (((addr + s_attr->size - 1) / msb->page_size) 1080 == (attr_offset / msb->page_size))) { 1081 memcpy(s_attr->data, buffer + addr % msb->page_size, 1082 s_attr->size); 1083 continue; 1084 } 1085 1086 attr_offset = (addr / msb->page_size) * msb->page_size; 1087 1088 if ((attr_offset + attr_len) < (addr + s_attr->size)) { 1089 kfree(buffer); 1090 attr_len = (((addr + s_attr->size) / msb->page_size) 1091 + 1 ) * msb->page_size - attr_offset; 1092 buffer = kmalloc(attr_len, GFP_KERNEL); 1093 if (!buffer) { 1094 rc = -ENOMEM; 1095 goto out_free_attr; 1096 } 1097 } 1098 1099 sg_init_one(&msb->req_sg[0], buffer, attr_len); 1100 msb->seg_count = 1; 1101 msb->current_seg = 0; 1102 msb->current_page = 0; 1103 msb->data_dir = READ; 1104 msb->transfer_cmd = MSPRO_CMD_READ_ATRB; 1105 1106 dev_dbg(&card->dev, "reading attribute range %x, %x\n", 1107 attr_offset, attr_len); 1108 1109 msb->setup_transfer(card, attr_offset, attr_len); 1110 memstick_new_req(card->host); 1111 wait_for_completion(&card->mrq_complete); 1112 if (card->current_mrq.error) { 1113 rc = card->current_mrq.error; 1114 goto out_free_buffer; 1115 } 1116 1117 memcpy(s_attr->data, buffer + addr % msb->page_size, 1118 s_attr->size); 1119 } 1120 1121 rc = 0; 1122out_free_buffer: 1123 kfree(buffer); 1124out_free_attr: 1125 kfree(attr); 1126 return rc; 1127} 1128 1129static int mspro_block_init_card(struct memstick_dev *card) 1130{ 1131 struct mspro_block_data *msb = memstick_get_drvdata(card); 1132 struct memstick_host *host = card->host; 1133 int rc = 0; 1134 1135 msb->system = MEMSTICK_SYS_SERIAL; 1136 msb->setup_transfer = h_mspro_block_setup_cmd; 1137 1138 card->reg_addr.r_offset = offsetof(struct mspro_register, status); 1139 card->reg_addr.r_length = sizeof(struct ms_status_register); 1140 card->reg_addr.w_offset = offsetof(struct mspro_register, param); 1141 card->reg_addr.w_length = sizeof(struct mspro_param_register); 1142 1143 if (memstick_set_rw_addr(card)) 1144 return -EIO; 1145 1146 msb->caps = host->caps; 1147 1148 msleep(150); 1149 rc = mspro_block_wait_for_ced(card); 1150 if (rc) 1151 return rc; 1152 1153 rc = mspro_block_switch_interface(card); 1154 if (rc) 1155 return rc; 1156 1157 dev_dbg(&card->dev, "card activated\n"); 1158 if (msb->system != MEMSTICK_SYS_SERIAL) 1159 msb->caps |= MEMSTICK_CAP_AUTO_GET_INT; 1160 1161 card->next_request = h_mspro_block_req_init; 1162 msb->mrq_handler = h_mspro_block_get_ro; 1163 memstick_init_req(&card->current_mrq, MS_TPC_READ_REG, NULL, 1164 sizeof(struct ms_status_register)); 1165 memstick_new_req(card->host); 1166 wait_for_completion(&card->mrq_complete); 1167 if (card->current_mrq.error) 1168 return card->current_mrq.error; 1169 1170 dev_dbg(&card->dev, "card r/w status %d\n", msb->read_only ? 0 : 1); 1171 1172 msb->page_size = 512; 1173 rc = mspro_block_read_attributes(card); 1174 if (rc) 1175 return rc; 1176 1177 dev_dbg(&card->dev, "attributes loaded\n"); 1178 return 0; 1179 1180} 1181 1182static int mspro_block_init_disk(struct memstick_dev *card) 1183{ 1184 struct mspro_block_data *msb = memstick_get_drvdata(card); 1185 struct memstick_host *host = card->host; 1186 struct mspro_devinfo *dev_info = NULL; 1187 struct mspro_sys_info *sys_info = NULL; 1188 struct mspro_sys_attr *s_attr = NULL; 1189 int rc, disk_id; 1190 u64 limit = BLK_BOUNCE_HIGH; 1191 unsigned long capacity; 1192 1193 if (host->dev.dma_mask && *(host->dev.dma_mask)) 1194 limit = *(host->dev.dma_mask); 1195 1196 for (rc = 0; msb->attr_group.attrs[rc]; ++rc) { 1197 s_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[rc]); 1198 1199 if (s_attr->id == MSPRO_BLOCK_ID_DEVINFO) 1200 dev_info = s_attr->data; 1201 else if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO) 1202 sys_info = s_attr->data; 1203 } 1204 1205 if (!dev_info || !sys_info) 1206 return -ENODEV; 1207 1208 msb->cylinders = be16_to_cpu(dev_info->cylinders); 1209 msb->heads = be16_to_cpu(dev_info->heads); 1210 msb->sectors_per_track = be16_to_cpu(dev_info->sectors_per_track); 1211 1212 msb->page_size = be16_to_cpu(sys_info->unit_size); 1213 1214 mutex_lock(&mspro_block_disk_lock); 1215 disk_id = idr_alloc(&mspro_block_disk_idr, card, 0, 256, GFP_KERNEL); 1216 mutex_unlock(&mspro_block_disk_lock); 1217 if (disk_id < 0) 1218 return disk_id; 1219 1220 msb->disk = alloc_disk(1 << MSPRO_BLOCK_PART_SHIFT); 1221 if (!msb->disk) { 1222 rc = -ENOMEM; 1223 goto out_release_id; 1224 } 1225 1226 msb->queue = blk_init_queue(mspro_block_submit_req, &msb->q_lock); 1227 if (!msb->queue) { 1228 rc = -ENOMEM; 1229 goto out_put_disk; 1230 } 1231 1232 msb->queue->queuedata = card; 1233 blk_queue_prep_rq(msb->queue, mspro_block_prepare_req); 1234 1235 blk_queue_bounce_limit(msb->queue, limit); 1236 blk_queue_max_hw_sectors(msb->queue, MSPRO_BLOCK_MAX_PAGES); 1237 blk_queue_max_segments(msb->queue, MSPRO_BLOCK_MAX_SEGS); 1238 blk_queue_max_segment_size(msb->queue, 1239 MSPRO_BLOCK_MAX_PAGES * msb->page_size); 1240 1241 msb->disk->major = major; 1242 msb->disk->first_minor = disk_id << MSPRO_BLOCK_PART_SHIFT; 1243 msb->disk->fops = &ms_block_bdops; 1244 msb->usage_count = 1; 1245 msb->disk->private_data = msb; 1246 msb->disk->queue = msb->queue; 1247 msb->disk->driverfs_dev = &card->dev; 1248 1249 sprintf(msb->disk->disk_name, "mspblk%d", disk_id); 1250 1251 blk_queue_logical_block_size(msb->queue, msb->page_size); 1252 1253 capacity = be16_to_cpu(sys_info->user_block_count); 1254 capacity *= be16_to_cpu(sys_info->block_size); 1255 capacity *= msb->page_size >> 9; 1256 set_capacity(msb->disk, capacity); 1257 dev_dbg(&card->dev, "capacity set %ld\n", capacity); 1258 1259 add_disk(msb->disk); 1260 msb->active = 1; 1261 return 0; 1262 1263out_put_disk: 1264 put_disk(msb->disk); 1265out_release_id: 1266 mutex_lock(&mspro_block_disk_lock); 1267 idr_remove(&mspro_block_disk_idr, disk_id); 1268 mutex_unlock(&mspro_block_disk_lock); 1269 return rc; 1270} 1271 1272static void mspro_block_data_clear(struct mspro_block_data *msb) 1273{ 1274 int cnt; 1275 struct mspro_sys_attr *s_attr; 1276 1277 if (msb->attr_group.attrs) { 1278 for (cnt = 0; msb->attr_group.attrs[cnt]; ++cnt) { 1279 s_attr = mspro_from_sysfs_attr(msb->attr_group 1280 .attrs[cnt]); 1281 kfree(s_attr->data); 1282 kfree(s_attr); 1283 } 1284 kfree(msb->attr_group.attrs); 1285 } 1286 1287 msb->card = NULL; 1288} 1289 1290static int mspro_block_check_card(struct memstick_dev *card) 1291{ 1292 struct mspro_block_data *msb = memstick_get_drvdata(card); 1293 1294 return (msb->active == 1); 1295} 1296 1297static int mspro_block_probe(struct memstick_dev *card) 1298{ 1299 struct mspro_block_data *msb; 1300 int rc = 0; 1301 1302 msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL); 1303 if (!msb) 1304 return -ENOMEM; 1305 memstick_set_drvdata(card, msb); 1306 msb->card = card; 1307 spin_lock_init(&msb->q_lock); 1308 1309 rc = mspro_block_init_card(card); 1310 1311 if (rc) 1312 goto out_free; 1313 1314 rc = sysfs_create_group(&card->dev.kobj, &msb->attr_group); 1315 if (rc) 1316 goto out_free; 1317 1318 rc = mspro_block_init_disk(card); 1319 if (!rc) { 1320 card->check = mspro_block_check_card; 1321 card->stop = mspro_block_stop; 1322 card->start = mspro_block_start; 1323 return 0; 1324 } 1325 1326 sysfs_remove_group(&card->dev.kobj, &msb->attr_group); 1327out_free: 1328 memstick_set_drvdata(card, NULL); 1329 mspro_block_data_clear(msb); 1330 kfree(msb); 1331 return rc; 1332} 1333 1334static void mspro_block_remove(struct memstick_dev *card) 1335{ 1336 struct mspro_block_data *msb = memstick_get_drvdata(card); 1337 unsigned long flags; 1338 1339 spin_lock_irqsave(&msb->q_lock, flags); 1340 msb->eject = 1; 1341 blk_start_queue(msb->queue); 1342 spin_unlock_irqrestore(&msb->q_lock, flags); 1343 1344 del_gendisk(msb->disk); 1345 dev_dbg(&card->dev, "mspro block remove\n"); 1346 1347 blk_cleanup_queue(msb->queue); 1348 msb->queue = NULL; 1349 1350 sysfs_remove_group(&card->dev.kobj, &msb->attr_group); 1351 1352 mutex_lock(&mspro_block_disk_lock); 1353 mspro_block_data_clear(msb); 1354 mutex_unlock(&mspro_block_disk_lock); 1355 1356 mspro_block_disk_release(msb->disk); 1357 memstick_set_drvdata(card, NULL); 1358} 1359 1360#ifdef CONFIG_PM 1361 1362static int mspro_block_suspend(struct memstick_dev *card, pm_message_t state) 1363{ 1364 struct mspro_block_data *msb = memstick_get_drvdata(card); 1365 unsigned long flags; 1366 1367 spin_lock_irqsave(&msb->q_lock, flags); 1368 blk_stop_queue(msb->queue); 1369 msb->active = 0; 1370 spin_unlock_irqrestore(&msb->q_lock, flags); 1371 1372 return 0; 1373} 1374 1375static int mspro_block_resume(struct memstick_dev *card) 1376{ 1377 struct mspro_block_data *msb = memstick_get_drvdata(card); 1378 unsigned long flags; 1379 int rc = 0; 1380 1381#ifdef CONFIG_MEMSTICK_UNSAFE_RESUME 1382 1383 struct mspro_block_data *new_msb; 1384 struct memstick_host *host = card->host; 1385 struct mspro_sys_attr *s_attr, *r_attr; 1386 unsigned char cnt; 1387 1388 mutex_lock(&host->lock); 1389 new_msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL); 1390 if (!new_msb) { 1391 rc = -ENOMEM; 1392 goto out_unlock; 1393 } 1394 1395 new_msb->card = card; 1396 memstick_set_drvdata(card, new_msb); 1397 if (mspro_block_init_card(card)) 1398 goto out_free; 1399 1400 for (cnt = 0; new_msb->attr_group.attrs[cnt] 1401 && msb->attr_group.attrs[cnt]; ++cnt) { 1402 s_attr = mspro_from_sysfs_attr(new_msb->attr_group.attrs[cnt]); 1403 r_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[cnt]); 1404 1405 if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO 1406 && r_attr->id == s_attr->id) { 1407 if (memcmp(s_attr->data, r_attr->data, s_attr->size)) 1408 break; 1409 1410 msb->active = 1; 1411 break; 1412 } 1413 } 1414 1415out_free: 1416 memstick_set_drvdata(card, msb); 1417 mspro_block_data_clear(new_msb); 1418 kfree(new_msb); 1419out_unlock: 1420 mutex_unlock(&host->lock); 1421 1422#endif /* CONFIG_MEMSTICK_UNSAFE_RESUME */ 1423 1424 spin_lock_irqsave(&msb->q_lock, flags); 1425 blk_start_queue(msb->queue); 1426 spin_unlock_irqrestore(&msb->q_lock, flags); 1427 return rc; 1428} 1429 1430#else 1431 1432#define mspro_block_suspend NULL 1433#define mspro_block_resume NULL 1434 1435#endif /* CONFIG_PM */ 1436 1437static struct memstick_device_id mspro_block_id_tbl[] = { 1438 {MEMSTICK_MATCH_ALL, MEMSTICK_TYPE_PRO, MEMSTICK_CATEGORY_STORAGE_DUO, 1439 MEMSTICK_CLASS_DUO}, 1440 {} 1441}; 1442 1443 1444static struct memstick_driver mspro_block_driver = { 1445 .driver = { 1446 .name = DRIVER_NAME, 1447 .owner = THIS_MODULE 1448 }, 1449 .id_table = mspro_block_id_tbl, 1450 .probe = mspro_block_probe, 1451 .remove = mspro_block_remove, 1452 .suspend = mspro_block_suspend, 1453 .resume = mspro_block_resume 1454}; 1455 1456static int __init mspro_block_init(void) 1457{ 1458 int rc = -ENOMEM; 1459 1460 rc = register_blkdev(major, DRIVER_NAME); 1461 if (rc < 0) { 1462 printk(KERN_ERR DRIVER_NAME ": failed to register " 1463 "major %d, error %d\n", major, rc); 1464 return rc; 1465 } 1466 if (!major) 1467 major = rc; 1468 1469 rc = memstick_register_driver(&mspro_block_driver); 1470 if (rc) 1471 unregister_blkdev(major, DRIVER_NAME); 1472 return rc; 1473} 1474 1475static void __exit mspro_block_exit(void) 1476{ 1477 memstick_unregister_driver(&mspro_block_driver); 1478 unregister_blkdev(major, DRIVER_NAME); 1479 idr_destroy(&mspro_block_disk_idr); 1480} 1481 1482module_init(mspro_block_init); 1483module_exit(mspro_block_exit); 1484 1485MODULE_LICENSE("GPL"); 1486MODULE_AUTHOR("Alex Dubov"); 1487MODULE_DESCRIPTION("Sony MemoryStickPro block device driver"); 1488MODULE_DEVICE_TABLE(memstick, mspro_block_id_tbl); 1489