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