1 /* 2 * Sony MemoryStick Pro storage support 3 * 4 * Copyright (C) 2007 Alex Dubov <oakad@yahoo.com> 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License version 2 as 8 * published by the Free Software Foundation. 9 * 10 * Special thanks to Carlos Corbacho for providing various MemoryStick cards 11 * that made this driver possible. 12 * 13 */ 14 15 #include <linux/blkdev.h> 16 #include <linux/idr.h> 17 #include <linux/hdreg.h> 18 #include <linux/kthread.h> 19 #include <linux/delay.h> 20 #include <linux/memstick.h> 21 22 #define DRIVER_NAME "mspro_block" 23 24 static int major; 25 module_param(major, int, 0644); 26 27 #define MSPRO_BLOCK_MAX_SEGS 32 28 #define MSPRO_BLOCK_MAX_PAGES ((2 << 16) - 1) 29 30 #define MSPRO_BLOCK_SIGNATURE 0xa5c3 31 #define MSPRO_BLOCK_MAX_ATTRIBUTES 41 32 33 #define MSPRO_BLOCK_PART_SHIFT 3 34 35 enum { 36 MSPRO_BLOCK_ID_SYSINFO = 0x10, 37 MSPRO_BLOCK_ID_MODELNAME = 0x15, 38 MSPRO_BLOCK_ID_MBR = 0x20, 39 MSPRO_BLOCK_ID_PBR16 = 0x21, 40 MSPRO_BLOCK_ID_PBR32 = 0x22, 41 MSPRO_BLOCK_ID_SPECFILEVALUES1 = 0x25, 42 MSPRO_BLOCK_ID_SPECFILEVALUES2 = 0x26, 43 MSPRO_BLOCK_ID_DEVINFO = 0x30 44 }; 45 46 struct mspro_sys_attr { 47 size_t size; 48 void *data; 49 unsigned char id; 50 char name[32]; 51 struct device_attribute dev_attr; 52 }; 53 54 struct mspro_attr_entry { 55 unsigned int address; 56 unsigned int size; 57 unsigned char id; 58 unsigned char reserved[3]; 59 } __attribute__((packed)); 60 61 struct mspro_attribute { 62 unsigned short signature; 63 unsigned short version; 64 unsigned char count; 65 unsigned char reserved[11]; 66 struct mspro_attr_entry entries[]; 67 } __attribute__((packed)); 68 69 struct mspro_sys_info { 70 unsigned char class; 71 unsigned char reserved0; 72 unsigned short block_size; 73 unsigned short block_count; 74 unsigned short user_block_count; 75 unsigned short page_size; 76 unsigned char reserved1[2]; 77 unsigned char assembly_date[8]; 78 unsigned int serial_number; 79 unsigned char assembly_maker_code; 80 unsigned char assembly_model_code[3]; 81 unsigned short memory_maker_code; 82 unsigned short memory_model_code; 83 unsigned char reserved2[4]; 84 unsigned char vcc; 85 unsigned char vpp; 86 unsigned short controller_number; 87 unsigned short controller_function; 88 unsigned short start_sector; 89 unsigned short unit_size; 90 unsigned char ms_sub_class; 91 unsigned char reserved3[4]; 92 unsigned char interface_type; 93 unsigned short controller_code; 94 unsigned char format_type; 95 unsigned char reserved4; 96 unsigned char device_type; 97 unsigned char reserved5[7]; 98 unsigned char mspro_id[16]; 99 unsigned char reserved6[16]; 100 } __attribute__((packed)); 101 102 struct mspro_mbr { 103 unsigned char boot_partition; 104 unsigned char start_head; 105 unsigned char start_sector; 106 unsigned char start_cylinder; 107 unsigned char partition_type; 108 unsigned char end_head; 109 unsigned char end_sector; 110 unsigned char end_cylinder; 111 unsigned int start_sectors; 112 unsigned int sectors_per_partition; 113 } __attribute__((packed)); 114 115 struct mspro_specfile { 116 char name[8]; 117 char ext[3]; 118 unsigned char attr; 119 unsigned char reserved[10]; 120 unsigned short time; 121 unsigned short date; 122 unsigned short cluster; 123 unsigned int size; 124 } __attribute__((packed)); 125 126 struct mspro_devinfo { 127 unsigned short cylinders; 128 unsigned short heads; 129 unsigned short bytes_per_track; 130 unsigned short bytes_per_sector; 131 unsigned short sectors_per_track; 132 unsigned char reserved[6]; 133 } __attribute__((packed)); 134 135 struct mspro_block_data { 136 struct memstick_dev *card; 137 unsigned int usage_count; 138 unsigned int caps; 139 struct gendisk *disk; 140 struct request_queue *queue; 141 struct request *block_req; 142 spinlock_t q_lock; 143 144 unsigned short page_size; 145 unsigned short cylinders; 146 unsigned short heads; 147 unsigned short sectors_per_track; 148 149 unsigned char system; 150 unsigned char read_only:1, 151 eject:1, 152 has_request:1, 153 data_dir:1, 154 active:1; 155 unsigned char transfer_cmd; 156 157 int (*mrq_handler)(struct memstick_dev *card, 158 struct memstick_request **mrq); 159 160 struct attribute_group attr_group; 161 162 struct scatterlist req_sg[MSPRO_BLOCK_MAX_SEGS]; 163 unsigned int seg_count; 164 unsigned int current_seg; 165 unsigned int current_page; 166 }; 167 168 static DEFINE_IDR(mspro_block_disk_idr); 169 static DEFINE_MUTEX(mspro_block_disk_lock); 170 171 static int mspro_block_complete_req(struct memstick_dev *card, int error); 172 173 /*** Block device ***/ 174 175 static int mspro_block_bd_open(struct inode *inode, struct file *filp) 176 { 177 struct gendisk *disk = inode->i_bdev->bd_disk; 178 struct mspro_block_data *msb = disk->private_data; 179 int rc = -ENXIO; 180 181 mutex_lock(&mspro_block_disk_lock); 182 183 if (msb && msb->card) { 184 msb->usage_count++; 185 if ((filp->f_mode & FMODE_WRITE) && msb->read_only) 186 rc = -EROFS; 187 else 188 rc = 0; 189 } 190 191 mutex_unlock(&mspro_block_disk_lock); 192 193 return rc; 194 } 195 196 197 static int mspro_block_disk_release(struct gendisk *disk) 198 { 199 struct mspro_block_data *msb = disk->private_data; 200 int disk_id = MINOR(disk_devt(disk)) >> MSPRO_BLOCK_PART_SHIFT; 201 202 mutex_lock(&mspro_block_disk_lock); 203 204 if (msb) { 205 if (msb->usage_count) 206 msb->usage_count--; 207 208 if (!msb->usage_count) { 209 kfree(msb); 210 disk->private_data = NULL; 211 idr_remove(&mspro_block_disk_idr, disk_id); 212 put_disk(disk); 213 } 214 } 215 216 mutex_unlock(&mspro_block_disk_lock); 217 218 return 0; 219 } 220 221 static int mspro_block_bd_release(struct inode *inode, struct file *filp) 222 { 223 struct gendisk *disk = inode->i_bdev->bd_disk; 224 return mspro_block_disk_release(disk); 225 } 226 227 static int mspro_block_bd_getgeo(struct block_device *bdev, 228 struct hd_geometry *geo) 229 { 230 struct mspro_block_data *msb = bdev->bd_disk->private_data; 231 232 geo->heads = msb->heads; 233 geo->sectors = msb->sectors_per_track; 234 geo->cylinders = msb->cylinders; 235 236 return 0; 237 } 238 239 static struct block_device_operations ms_block_bdops = { 240 .open = mspro_block_bd_open, 241 .release = mspro_block_bd_release, 242 .getgeo = mspro_block_bd_getgeo, 243 .owner = THIS_MODULE 244 }; 245 246 /*** Information ***/ 247 248 static struct mspro_sys_attr *mspro_from_sysfs_attr(struct attribute *attr) 249 { 250 struct device_attribute *dev_attr 251 = container_of(attr, struct device_attribute, attr); 252 return container_of(dev_attr, struct mspro_sys_attr, dev_attr); 253 } 254 255 static const char *mspro_block_attr_name(unsigned char tag) 256 { 257 switch (tag) { 258 case MSPRO_BLOCK_ID_SYSINFO: 259 return "attr_sysinfo"; 260 case MSPRO_BLOCK_ID_MODELNAME: 261 return "attr_modelname"; 262 case MSPRO_BLOCK_ID_MBR: 263 return "attr_mbr"; 264 case MSPRO_BLOCK_ID_PBR16: 265 return "attr_pbr16"; 266 case MSPRO_BLOCK_ID_PBR32: 267 return "attr_pbr32"; 268 case MSPRO_BLOCK_ID_SPECFILEVALUES1: 269 return "attr_specfilevalues1"; 270 case MSPRO_BLOCK_ID_SPECFILEVALUES2: 271 return "attr_specfilevalues2"; 272 case MSPRO_BLOCK_ID_DEVINFO: 273 return "attr_devinfo"; 274 default: 275 return NULL; 276 }; 277 } 278 279 typedef ssize_t (*sysfs_show_t)(struct device *dev, 280 struct device_attribute *attr, 281 char *buffer); 282 283 static ssize_t mspro_block_attr_show_default(struct device *dev, 284 struct device_attribute *attr, 285 char *buffer) 286 { 287 struct mspro_sys_attr *s_attr = container_of(attr, 288 struct mspro_sys_attr, 289 dev_attr); 290 291 ssize_t cnt, rc = 0; 292 293 for (cnt = 0; cnt < s_attr->size; cnt++) { 294 if (cnt && !(cnt % 16)) { 295 if (PAGE_SIZE - rc) 296 buffer[rc++] = '\n'; 297 } 298 299 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "%02x ", 300 ((unsigned char *)s_attr->data)[cnt]); 301 } 302 return rc; 303 } 304 305 static ssize_t mspro_block_attr_show_sysinfo(struct device *dev, 306 struct device_attribute *attr, 307 char *buffer) 308 { 309 struct mspro_sys_attr *x_attr = container_of(attr, 310 struct mspro_sys_attr, 311 dev_attr); 312 struct mspro_sys_info *x_sys = x_attr->data; 313 ssize_t rc = 0; 314 int date_tz = 0, date_tz_f = 0; 315 316 if (x_sys->assembly_date[0] > 0x80U) { 317 date_tz = (~x_sys->assembly_date[0]) + 1; 318 date_tz_f = date_tz & 3; 319 date_tz >>= 2; 320 date_tz = -date_tz; 321 date_tz_f *= 15; 322 } else if (x_sys->assembly_date[0] < 0x80U) { 323 date_tz = x_sys->assembly_date[0]; 324 date_tz_f = date_tz & 3; 325 date_tz >>= 2; 326 date_tz_f *= 15; 327 } 328 329 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "class: %x\n", 330 x_sys->class); 331 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "block size: %x\n", 332 be16_to_cpu(x_sys->block_size)); 333 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "block count: %x\n", 334 be16_to_cpu(x_sys->block_count)); 335 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "user block count: %x\n", 336 be16_to_cpu(x_sys->user_block_count)); 337 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "page size: %x\n", 338 be16_to_cpu(x_sys->page_size)); 339 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "assembly date: " 340 "GMT%+d:%d %04u-%02u-%02u %02u:%02u:%02u\n", 341 date_tz, date_tz_f, 342 be16_to_cpu(*(unsigned short *) 343 &x_sys->assembly_date[1]), 344 x_sys->assembly_date[3], x_sys->assembly_date[4], 345 x_sys->assembly_date[5], x_sys->assembly_date[6], 346 x_sys->assembly_date[7]); 347 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "serial number: %x\n", 348 be32_to_cpu(x_sys->serial_number)); 349 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, 350 "assembly maker code: %x\n", 351 x_sys->assembly_maker_code); 352 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "assembly model code: " 353 "%02x%02x%02x\n", x_sys->assembly_model_code[0], 354 x_sys->assembly_model_code[1], 355 x_sys->assembly_model_code[2]); 356 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "memory maker code: %x\n", 357 be16_to_cpu(x_sys->memory_maker_code)); 358 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "memory model code: %x\n", 359 be16_to_cpu(x_sys->memory_model_code)); 360 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "vcc: %x\n", 361 x_sys->vcc); 362 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "vpp: %x\n", 363 x_sys->vpp); 364 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "controller number: %x\n", 365 be16_to_cpu(x_sys->controller_number)); 366 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, 367 "controller function: %x\n", 368 be16_to_cpu(x_sys->controller_function)); 369 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sector: %x\n", 370 be16_to_cpu(x_sys->start_sector)); 371 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "unit size: %x\n", 372 be16_to_cpu(x_sys->unit_size)); 373 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "sub class: %x\n", 374 x_sys->ms_sub_class); 375 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "interface type: %x\n", 376 x_sys->interface_type); 377 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "controller code: %x\n", 378 be16_to_cpu(x_sys->controller_code)); 379 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "format type: %x\n", 380 x_sys->format_type); 381 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "device type: %x\n", 382 x_sys->device_type); 383 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "mspro id: %s\n", 384 x_sys->mspro_id); 385 return rc; 386 } 387 388 static ssize_t mspro_block_attr_show_modelname(struct device *dev, 389 struct device_attribute *attr, 390 char *buffer) 391 { 392 struct mspro_sys_attr *s_attr = container_of(attr, 393 struct mspro_sys_attr, 394 dev_attr); 395 396 return scnprintf(buffer, PAGE_SIZE, "%s", (char *)s_attr->data); 397 } 398 399 static ssize_t mspro_block_attr_show_mbr(struct device *dev, 400 struct device_attribute *attr, 401 char *buffer) 402 { 403 struct mspro_sys_attr *x_attr = container_of(attr, 404 struct mspro_sys_attr, 405 dev_attr); 406 struct mspro_mbr *x_mbr = x_attr->data; 407 ssize_t rc = 0; 408 409 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "boot partition: %x\n", 410 x_mbr->boot_partition); 411 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start head: %x\n", 412 x_mbr->start_head); 413 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sector: %x\n", 414 x_mbr->start_sector); 415 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start cylinder: %x\n", 416 x_mbr->start_cylinder); 417 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "partition type: %x\n", 418 x_mbr->partition_type); 419 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end head: %x\n", 420 x_mbr->end_head); 421 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end sector: %x\n", 422 x_mbr->end_sector); 423 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end cylinder: %x\n", 424 x_mbr->end_cylinder); 425 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sectors: %x\n", 426 x_mbr->start_sectors); 427 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, 428 "sectors per partition: %x\n", 429 x_mbr->sectors_per_partition); 430 return rc; 431 } 432 433 static ssize_t mspro_block_attr_show_specfile(struct device *dev, 434 struct device_attribute *attr, 435 char *buffer) 436 { 437 struct mspro_sys_attr *x_attr = container_of(attr, 438 struct mspro_sys_attr, 439 dev_attr); 440 struct mspro_specfile *x_spfile = x_attr->data; 441 char name[9], ext[4]; 442 ssize_t rc = 0; 443 444 memcpy(name, x_spfile->name, 8); 445 name[8] = 0; 446 memcpy(ext, x_spfile->ext, 3); 447 ext[3] = 0; 448 449 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "name: %s\n", name); 450 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "ext: %s\n", ext); 451 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "attribute: %x\n", 452 x_spfile->attr); 453 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "time: %d:%d:%d\n", 454 x_spfile->time >> 11, 455 (x_spfile->time >> 5) & 0x3f, 456 (x_spfile->time & 0x1f) * 2); 457 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "date: %d-%d-%d\n", 458 (x_spfile->date >> 9) + 1980, 459 (x_spfile->date >> 5) & 0xf, 460 x_spfile->date & 0x1f); 461 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start cluster: %x\n", 462 x_spfile->cluster); 463 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "size: %x\n", 464 x_spfile->size); 465 return rc; 466 } 467 468 static ssize_t mspro_block_attr_show_devinfo(struct device *dev, 469 struct device_attribute *attr, 470 char *buffer) 471 { 472 struct mspro_sys_attr *x_attr = container_of(attr, 473 struct mspro_sys_attr, 474 dev_attr); 475 struct mspro_devinfo *x_devinfo = x_attr->data; 476 ssize_t rc = 0; 477 478 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "cylinders: %x\n", 479 be16_to_cpu(x_devinfo->cylinders)); 480 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "heads: %x\n", 481 be16_to_cpu(x_devinfo->heads)); 482 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "bytes per track: %x\n", 483 be16_to_cpu(x_devinfo->bytes_per_track)); 484 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "bytes per sector: %x\n", 485 be16_to_cpu(x_devinfo->bytes_per_sector)); 486 rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "sectors per track: %x\n", 487 be16_to_cpu(x_devinfo->sectors_per_track)); 488 return rc; 489 } 490 491 static sysfs_show_t mspro_block_attr_show(unsigned char tag) 492 { 493 switch (tag) { 494 case MSPRO_BLOCK_ID_SYSINFO: 495 return mspro_block_attr_show_sysinfo; 496 case MSPRO_BLOCK_ID_MODELNAME: 497 return mspro_block_attr_show_modelname; 498 case MSPRO_BLOCK_ID_MBR: 499 return mspro_block_attr_show_mbr; 500 case MSPRO_BLOCK_ID_SPECFILEVALUES1: 501 case MSPRO_BLOCK_ID_SPECFILEVALUES2: 502 return mspro_block_attr_show_specfile; 503 case MSPRO_BLOCK_ID_DEVINFO: 504 return mspro_block_attr_show_devinfo; 505 default: 506 return mspro_block_attr_show_default; 507 } 508 } 509 510 /*** Protocol handlers ***/ 511 512 /* 513 * Functions prefixed with "h_" are protocol callbacks. They can be called from 514 * interrupt context. Return value of 0 means that request processing is still 515 * ongoing, while special error value of -EAGAIN means that current request is 516 * finished (and request processor should come back some time later). 517 */ 518 519 static int h_mspro_block_req_init(struct memstick_dev *card, 520 struct memstick_request **mrq) 521 { 522 struct mspro_block_data *msb = memstick_get_drvdata(card); 523 524 *mrq = &card->current_mrq; 525 card->next_request = msb->mrq_handler; 526 return 0; 527 } 528 529 static int h_mspro_block_default(struct memstick_dev *card, 530 struct memstick_request **mrq) 531 { 532 return mspro_block_complete_req(card, (*mrq)->error); 533 } 534 535 static int h_mspro_block_default_bad(struct memstick_dev *card, 536 struct memstick_request **mrq) 537 { 538 return -ENXIO; 539 } 540 541 static int h_mspro_block_get_ro(struct memstick_dev *card, 542 struct memstick_request **mrq) 543 { 544 struct mspro_block_data *msb = memstick_get_drvdata(card); 545 546 if (!(*mrq)->error) { 547 if ((*mrq)->data[offsetof(struct ms_status_register, status0)] 548 & MEMSTICK_STATUS0_WP) 549 msb->read_only = 1; 550 else 551 msb->read_only = 0; 552 } 553 554 return mspro_block_complete_req(card, (*mrq)->error); 555 } 556 557 static int h_mspro_block_wait_for_ced(struct memstick_dev *card, 558 struct memstick_request **mrq) 559 { 560 dev_dbg(&card->dev, "wait for ced: value %x\n", (*mrq)->data[0]); 561 562 if (!(*mrq)->error) { 563 if ((*mrq)->data[0] & (MEMSTICK_INT_CMDNAK | MEMSTICK_INT_ERR)) 564 (*mrq)->error = -EFAULT; 565 else if (!((*mrq)->data[0] & MEMSTICK_INT_CED)) 566 return 0; 567 } 568 569 return mspro_block_complete_req(card, (*mrq)->error); 570 } 571 572 static int h_mspro_block_transfer_data(struct memstick_dev *card, 573 struct memstick_request **mrq) 574 { 575 struct mspro_block_data *msb = memstick_get_drvdata(card); 576 unsigned char t_val = 0; 577 struct scatterlist t_sg = { 0 }; 578 size_t t_offset; 579 580 if ((*mrq)->error) 581 return mspro_block_complete_req(card, (*mrq)->error); 582 583 switch ((*mrq)->tpc) { 584 case MS_TPC_WRITE_REG: 585 memstick_init_req(*mrq, MS_TPC_SET_CMD, &msb->transfer_cmd, 1); 586 (*mrq)->need_card_int = 1; 587 return 0; 588 case MS_TPC_SET_CMD: 589 t_val = (*mrq)->int_reg; 590 memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1); 591 if (msb->caps & MEMSTICK_CAP_AUTO_GET_INT) 592 goto has_int_reg; 593 return 0; 594 case MS_TPC_GET_INT: 595 t_val = (*mrq)->data[0]; 596 has_int_reg: 597 if (t_val & (MEMSTICK_INT_CMDNAK | MEMSTICK_INT_ERR)) { 598 t_val = MSPRO_CMD_STOP; 599 memstick_init_req(*mrq, MS_TPC_SET_CMD, &t_val, 1); 600 card->next_request = h_mspro_block_default; 601 return 0; 602 } 603 604 if (msb->current_page 605 == (msb->req_sg[msb->current_seg].length 606 / msb->page_size)) { 607 msb->current_page = 0; 608 msb->current_seg++; 609 610 if (msb->current_seg == msb->seg_count) { 611 if (t_val & MEMSTICK_INT_CED) { 612 return mspro_block_complete_req(card, 613 0); 614 } else { 615 card->next_request 616 = h_mspro_block_wait_for_ced; 617 memstick_init_req(*mrq, MS_TPC_GET_INT, 618 NULL, 1); 619 return 0; 620 } 621 } 622 } 623 624 if (!(t_val & MEMSTICK_INT_BREQ)) { 625 memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1); 626 return 0; 627 } 628 629 t_offset = msb->req_sg[msb->current_seg].offset; 630 t_offset += msb->current_page * msb->page_size; 631 632 sg_set_page(&t_sg, 633 nth_page(sg_page(&(msb->req_sg[msb->current_seg])), 634 t_offset >> PAGE_SHIFT), 635 msb->page_size, offset_in_page(t_offset)); 636 637 memstick_init_req_sg(*mrq, msb->data_dir == READ 638 ? MS_TPC_READ_LONG_DATA 639 : MS_TPC_WRITE_LONG_DATA, 640 &t_sg); 641 (*mrq)->need_card_int = 1; 642 return 0; 643 case MS_TPC_READ_LONG_DATA: 644 case MS_TPC_WRITE_LONG_DATA: 645 msb->current_page++; 646 if (msb->caps & MEMSTICK_CAP_AUTO_GET_INT) { 647 t_val = (*mrq)->int_reg; 648 goto has_int_reg; 649 } else { 650 memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1); 651 return 0; 652 } 653 654 default: 655 BUG(); 656 } 657 } 658 659 /*** Data transfer ***/ 660 661 static int mspro_block_issue_req(struct memstick_dev *card, int chunk) 662 { 663 struct mspro_block_data *msb = memstick_get_drvdata(card); 664 sector_t t_sec; 665 unsigned int count; 666 struct mspro_param_register param; 667 668 try_again: 669 while (chunk) { 670 msb->current_page = 0; 671 msb->current_seg = 0; 672 msb->seg_count = blk_rq_map_sg(msb->block_req->q, 673 msb->block_req, 674 msb->req_sg); 675 676 if (!msb->seg_count) { 677 chunk = __blk_end_request(msb->block_req, -ENOMEM, 678 blk_rq_cur_bytes(msb->block_req)); 679 continue; 680 } 681 682 t_sec = msb->block_req->sector << 9; 683 sector_div(t_sec, msb->page_size); 684 685 count = msb->block_req->nr_sectors << 9; 686 count /= msb->page_size; 687 688 param.system = msb->system; 689 param.data_count = cpu_to_be16(count); 690 param.data_address = cpu_to_be32((uint32_t)t_sec); 691 param.tpc_param = 0; 692 693 msb->data_dir = rq_data_dir(msb->block_req); 694 msb->transfer_cmd = msb->data_dir == READ 695 ? MSPRO_CMD_READ_DATA 696 : MSPRO_CMD_WRITE_DATA; 697 698 dev_dbg(&card->dev, "data transfer: cmd %x, " 699 "lba %x, count %x\n", msb->transfer_cmd, 700 be32_to_cpu(param.data_address), count); 701 702 card->next_request = h_mspro_block_req_init; 703 msb->mrq_handler = h_mspro_block_transfer_data; 704 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, 705 ¶m, sizeof(param)); 706 memstick_new_req(card->host); 707 return 0; 708 } 709 710 dev_dbg(&card->dev, "elv_next\n"); 711 msb->block_req = elv_next_request(msb->queue); 712 if (!msb->block_req) { 713 dev_dbg(&card->dev, "issue end\n"); 714 return -EAGAIN; 715 } 716 717 dev_dbg(&card->dev, "trying again\n"); 718 chunk = 1; 719 goto try_again; 720 } 721 722 static int mspro_block_complete_req(struct memstick_dev *card, int error) 723 { 724 struct mspro_block_data *msb = memstick_get_drvdata(card); 725 int chunk, cnt; 726 unsigned int t_len = 0; 727 unsigned long flags; 728 729 spin_lock_irqsave(&msb->q_lock, flags); 730 dev_dbg(&card->dev, "complete %d, %d\n", msb->has_request ? 1 : 0, 731 error); 732 733 if (msb->has_request) { 734 /* Nothing to do - not really an error */ 735 if (error == -EAGAIN) 736 error = 0; 737 738 if (error || (card->current_mrq.tpc == MSPRO_CMD_STOP)) { 739 if (msb->data_dir == READ) { 740 for (cnt = 0; cnt < msb->current_seg; cnt++) 741 t_len += msb->req_sg[cnt].length 742 / msb->page_size; 743 744 if (msb->current_page) 745 t_len += msb->current_page - 1; 746 747 t_len *= msb->page_size; 748 } 749 } else 750 t_len = msb->block_req->nr_sectors << 9; 751 752 dev_dbg(&card->dev, "transferred %x (%d)\n", t_len, error); 753 754 if (error && !t_len) 755 t_len = blk_rq_cur_bytes(msb->block_req); 756 757 chunk = __blk_end_request(msb->block_req, error, t_len); 758 759 error = mspro_block_issue_req(card, chunk); 760 761 if (!error) 762 goto out; 763 else 764 msb->has_request = 0; 765 } else { 766 if (!error) 767 error = -EAGAIN; 768 } 769 770 card->next_request = h_mspro_block_default_bad; 771 complete_all(&card->mrq_complete); 772 out: 773 spin_unlock_irqrestore(&msb->q_lock, flags); 774 return error; 775 } 776 777 static void mspro_block_stop(struct memstick_dev *card) 778 { 779 struct mspro_block_data *msb = memstick_get_drvdata(card); 780 int rc = 0; 781 unsigned long flags; 782 783 while (1) { 784 spin_lock_irqsave(&msb->q_lock, flags); 785 if (!msb->has_request) { 786 blk_stop_queue(msb->queue); 787 rc = 1; 788 } 789 spin_unlock_irqrestore(&msb->q_lock, flags); 790 791 if (rc) 792 break; 793 794 wait_for_completion(&card->mrq_complete); 795 } 796 } 797 798 static void mspro_block_start(struct memstick_dev *card) 799 { 800 struct mspro_block_data *msb = memstick_get_drvdata(card); 801 unsigned long flags; 802 803 spin_lock_irqsave(&msb->q_lock, flags); 804 blk_start_queue(msb->queue); 805 spin_unlock_irqrestore(&msb->q_lock, flags); 806 } 807 808 static int mspro_block_prepare_req(struct request_queue *q, struct request *req) 809 { 810 if (!blk_fs_request(req) && !blk_pc_request(req)) { 811 blk_dump_rq_flags(req, "MSPro unsupported request"); 812 return BLKPREP_KILL; 813 } 814 815 req->cmd_flags |= REQ_DONTPREP; 816 817 return BLKPREP_OK; 818 } 819 820 static void mspro_block_submit_req(struct request_queue *q) 821 { 822 struct memstick_dev *card = q->queuedata; 823 struct mspro_block_data *msb = memstick_get_drvdata(card); 824 struct request *req = NULL; 825 826 if (msb->has_request) 827 return; 828 829 if (msb->eject) { 830 while ((req = elv_next_request(q)) != NULL) 831 __blk_end_request(req, -ENODEV, blk_rq_bytes(req)); 832 833 return; 834 } 835 836 msb->has_request = 1; 837 if (mspro_block_issue_req(card, 0)) 838 msb->has_request = 0; 839 } 840 841 /*** Initialization ***/ 842 843 static int mspro_block_wait_for_ced(struct memstick_dev *card) 844 { 845 struct mspro_block_data *msb = memstick_get_drvdata(card); 846 847 card->next_request = h_mspro_block_req_init; 848 msb->mrq_handler = h_mspro_block_wait_for_ced; 849 memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1); 850 memstick_new_req(card->host); 851 wait_for_completion(&card->mrq_complete); 852 return card->current_mrq.error; 853 } 854 855 static int mspro_block_set_interface(struct memstick_dev *card, 856 unsigned char sys_reg) 857 { 858 struct memstick_host *host = card->host; 859 struct mspro_block_data *msb = memstick_get_drvdata(card); 860 struct mspro_param_register param = { 861 .system = sys_reg, 862 .data_count = 0, 863 .data_address = 0, 864 .tpc_param = 0 865 }; 866 867 card->next_request = h_mspro_block_req_init; 868 msb->mrq_handler = h_mspro_block_default; 869 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, ¶m, 870 sizeof(param)); 871 memstick_new_req(host); 872 wait_for_completion(&card->mrq_complete); 873 return card->current_mrq.error; 874 } 875 876 static int mspro_block_switch_interface(struct memstick_dev *card) 877 { 878 struct memstick_host *host = card->host; 879 struct mspro_block_data *msb = memstick_get_drvdata(card); 880 int rc = 0; 881 882 try_again: 883 if (msb->caps & MEMSTICK_CAP_PAR4) 884 rc = mspro_block_set_interface(card, MEMSTICK_SYS_PAR4); 885 else 886 return 0; 887 888 if (rc) { 889 printk(KERN_WARNING 890 "%s: could not switch to 4-bit mode, error %d\n", 891 card->dev.bus_id, rc); 892 return 0; 893 } 894 895 msb->system = MEMSTICK_SYS_PAR4; 896 host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_PAR4); 897 printk(KERN_INFO "%s: switching to 4-bit parallel mode\n", 898 card->dev.bus_id); 899 900 if (msb->caps & MEMSTICK_CAP_PAR8) { 901 rc = mspro_block_set_interface(card, MEMSTICK_SYS_PAR8); 902 903 if (!rc) { 904 msb->system = MEMSTICK_SYS_PAR8; 905 host->set_param(host, MEMSTICK_INTERFACE, 906 MEMSTICK_PAR8); 907 printk(KERN_INFO 908 "%s: switching to 8-bit parallel mode\n", 909 card->dev.bus_id); 910 } else 911 printk(KERN_WARNING 912 "%s: could not switch to 8-bit mode, error %d\n", 913 card->dev.bus_id, rc); 914 } 915 916 card->next_request = h_mspro_block_req_init; 917 msb->mrq_handler = h_mspro_block_default; 918 memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1); 919 memstick_new_req(card->host); 920 wait_for_completion(&card->mrq_complete); 921 rc = card->current_mrq.error; 922 923 if (rc) { 924 printk(KERN_WARNING 925 "%s: interface error, trying to fall back to serial\n", 926 card->dev.bus_id); 927 msb->system = MEMSTICK_SYS_SERIAL; 928 host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_OFF); 929 msleep(10); 930 host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_ON); 931 host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_SERIAL); 932 933 rc = memstick_set_rw_addr(card); 934 if (!rc) 935 rc = mspro_block_set_interface(card, msb->system); 936 937 if (!rc) { 938 msleep(150); 939 rc = mspro_block_wait_for_ced(card); 940 if (rc) 941 return rc; 942 943 if (msb->caps & MEMSTICK_CAP_PAR8) { 944 msb->caps &= ~MEMSTICK_CAP_PAR8; 945 goto try_again; 946 } 947 } 948 } 949 return rc; 950 } 951 952 /* Memory allocated for attributes by this function should be freed by 953 * mspro_block_data_clear, no matter if the initialization process succeded 954 * or failed. 955 */ 956 static int mspro_block_read_attributes(struct memstick_dev *card) 957 { 958 struct mspro_block_data *msb = memstick_get_drvdata(card); 959 struct mspro_param_register param = { 960 .system = msb->system, 961 .data_count = cpu_to_be16(1), 962 .data_address = 0, 963 .tpc_param = 0 964 }; 965 struct mspro_attribute *attr = NULL; 966 struct mspro_sys_attr *s_attr = NULL; 967 unsigned char *buffer = NULL; 968 int cnt, rc, attr_count; 969 unsigned int addr; 970 unsigned short page_count; 971 972 attr = kmalloc(msb->page_size, GFP_KERNEL); 973 if (!attr) 974 return -ENOMEM; 975 976 sg_init_one(&msb->req_sg[0], attr, msb->page_size); 977 msb->seg_count = 1; 978 msb->current_seg = 0; 979 msb->current_page = 0; 980 msb->data_dir = READ; 981 msb->transfer_cmd = MSPRO_CMD_READ_ATRB; 982 983 card->next_request = h_mspro_block_req_init; 984 msb->mrq_handler = h_mspro_block_transfer_data; 985 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, ¶m, 986 sizeof(param)); 987 memstick_new_req(card->host); 988 wait_for_completion(&card->mrq_complete); 989 if (card->current_mrq.error) { 990 rc = card->current_mrq.error; 991 goto out_free_attr; 992 } 993 994 if (be16_to_cpu(attr->signature) != MSPRO_BLOCK_SIGNATURE) { 995 printk(KERN_ERR "%s: unrecognized device signature %x\n", 996 card->dev.bus_id, be16_to_cpu(attr->signature)); 997 rc = -ENODEV; 998 goto out_free_attr; 999 } 1000 1001 if (attr->count > MSPRO_BLOCK_MAX_ATTRIBUTES) { 1002 printk(KERN_WARNING "%s: way too many attribute entries\n", 1003 card->dev.bus_id); 1004 attr_count = MSPRO_BLOCK_MAX_ATTRIBUTES; 1005 } else 1006 attr_count = attr->count; 1007 1008 msb->attr_group.attrs = kzalloc((attr_count + 1) 1009 * sizeof(struct attribute), 1010 GFP_KERNEL); 1011 if (!msb->attr_group.attrs) { 1012 rc = -ENOMEM; 1013 goto out_free_attr; 1014 } 1015 msb->attr_group.name = "media_attributes"; 1016 1017 buffer = kmalloc(msb->page_size, GFP_KERNEL); 1018 if (!buffer) { 1019 rc = -ENOMEM; 1020 goto out_free_attr; 1021 } 1022 memcpy(buffer, (char *)attr, msb->page_size); 1023 page_count = 1; 1024 1025 for (cnt = 0; cnt < attr_count; ++cnt) { 1026 s_attr = kzalloc(sizeof(struct mspro_sys_attr), GFP_KERNEL); 1027 if (!s_attr) { 1028 rc = -ENOMEM; 1029 goto out_free_buffer; 1030 } 1031 1032 msb->attr_group.attrs[cnt] = &s_attr->dev_attr.attr; 1033 addr = be32_to_cpu(attr->entries[cnt].address); 1034 rc = be32_to_cpu(attr->entries[cnt].size); 1035 dev_dbg(&card->dev, "adding attribute %d: id %x, address %x, " 1036 "size %x\n", cnt, attr->entries[cnt].id, addr, rc); 1037 s_attr->id = attr->entries[cnt].id; 1038 if (mspro_block_attr_name(s_attr->id)) 1039 snprintf(s_attr->name, sizeof(s_attr->name), "%s", 1040 mspro_block_attr_name(attr->entries[cnt].id)); 1041 else 1042 snprintf(s_attr->name, sizeof(s_attr->name), 1043 "attr_x%02x", attr->entries[cnt].id); 1044 1045 s_attr->dev_attr.attr.name = s_attr->name; 1046 s_attr->dev_attr.attr.mode = S_IRUGO; 1047 s_attr->dev_attr.show = mspro_block_attr_show(s_attr->id); 1048 1049 if (!rc) 1050 continue; 1051 1052 s_attr->size = rc; 1053 s_attr->data = kmalloc(rc, GFP_KERNEL); 1054 if (!s_attr->data) { 1055 rc = -ENOMEM; 1056 goto out_free_buffer; 1057 } 1058 1059 if (((addr / msb->page_size) 1060 == be32_to_cpu(param.data_address)) 1061 && (((addr + rc - 1) / msb->page_size) 1062 == be32_to_cpu(param.data_address))) { 1063 memcpy(s_attr->data, buffer + addr % msb->page_size, 1064 rc); 1065 continue; 1066 } 1067 1068 if (page_count <= (rc / msb->page_size)) { 1069 kfree(buffer); 1070 page_count = (rc / msb->page_size) + 1; 1071 buffer = kmalloc(page_count * msb->page_size, 1072 GFP_KERNEL); 1073 if (!buffer) { 1074 rc = -ENOMEM; 1075 goto out_free_attr; 1076 } 1077 } 1078 1079 param.system = msb->system; 1080 param.data_count = cpu_to_be16((rc / msb->page_size) + 1); 1081 param.data_address = cpu_to_be32(addr / msb->page_size); 1082 param.tpc_param = 0; 1083 1084 sg_init_one(&msb->req_sg[0], buffer, 1085 be16_to_cpu(param.data_count) * msb->page_size); 1086 msb->seg_count = 1; 1087 msb->current_seg = 0; 1088 msb->current_page = 0; 1089 msb->data_dir = READ; 1090 msb->transfer_cmd = MSPRO_CMD_READ_ATRB; 1091 1092 dev_dbg(&card->dev, "reading attribute pages %x, %x\n", 1093 be32_to_cpu(param.data_address), 1094 be16_to_cpu(param.data_count)); 1095 1096 card->next_request = h_mspro_block_req_init; 1097 msb->mrq_handler = h_mspro_block_transfer_data; 1098 memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, 1099 (char *)¶m, sizeof(param)); 1100 memstick_new_req(card->host); 1101 wait_for_completion(&card->mrq_complete); 1102 if (card->current_mrq.error) { 1103 rc = card->current_mrq.error; 1104 goto out_free_buffer; 1105 } 1106 1107 memcpy(s_attr->data, buffer + addr % msb->page_size, rc); 1108 } 1109 1110 rc = 0; 1111 out_free_buffer: 1112 kfree(buffer); 1113 out_free_attr: 1114 kfree(attr); 1115 return rc; 1116 } 1117 1118 static int mspro_block_init_card(struct memstick_dev *card) 1119 { 1120 struct mspro_block_data *msb = memstick_get_drvdata(card); 1121 struct memstick_host *host = card->host; 1122 int rc = 0; 1123 1124 msb->system = MEMSTICK_SYS_SERIAL; 1125 card->reg_addr.r_offset = offsetof(struct mspro_register, status); 1126 card->reg_addr.r_length = sizeof(struct ms_status_register); 1127 card->reg_addr.w_offset = offsetof(struct mspro_register, param); 1128 card->reg_addr.w_length = sizeof(struct mspro_param_register); 1129 1130 if (memstick_set_rw_addr(card)) 1131 return -EIO; 1132 1133 msb->caps = host->caps; 1134 1135 msleep(150); 1136 rc = mspro_block_wait_for_ced(card); 1137 if (rc) 1138 return rc; 1139 1140 rc = mspro_block_switch_interface(card); 1141 if (rc) 1142 return rc; 1143 1144 dev_dbg(&card->dev, "card activated\n"); 1145 if (msb->system != MEMSTICK_SYS_SERIAL) 1146 msb->caps |= MEMSTICK_CAP_AUTO_GET_INT; 1147 1148 card->next_request = h_mspro_block_req_init; 1149 msb->mrq_handler = h_mspro_block_get_ro; 1150 memstick_init_req(&card->current_mrq, MS_TPC_READ_REG, NULL, 1151 sizeof(struct ms_status_register)); 1152 memstick_new_req(card->host); 1153 wait_for_completion(&card->mrq_complete); 1154 if (card->current_mrq.error) 1155 return card->current_mrq.error; 1156 1157 dev_dbg(&card->dev, "card r/w status %d\n", msb->read_only ? 0 : 1); 1158 1159 msb->page_size = 512; 1160 rc = mspro_block_read_attributes(card); 1161 if (rc) 1162 return rc; 1163 1164 dev_dbg(&card->dev, "attributes loaded\n"); 1165 return 0; 1166 1167 } 1168 1169 static int mspro_block_init_disk(struct memstick_dev *card) 1170 { 1171 struct mspro_block_data *msb = memstick_get_drvdata(card); 1172 struct memstick_host *host = card->host; 1173 struct mspro_devinfo *dev_info = NULL; 1174 struct mspro_sys_info *sys_info = NULL; 1175 struct mspro_sys_attr *s_attr = NULL; 1176 int rc, disk_id; 1177 u64 limit = BLK_BOUNCE_HIGH; 1178 unsigned long capacity; 1179 1180 if (host->dev.dma_mask && *(host->dev.dma_mask)) 1181 limit = *(host->dev.dma_mask); 1182 1183 for (rc = 0; msb->attr_group.attrs[rc]; ++rc) { 1184 s_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[rc]); 1185 1186 if (s_attr->id == MSPRO_BLOCK_ID_DEVINFO) 1187 dev_info = s_attr->data; 1188 else if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO) 1189 sys_info = s_attr->data; 1190 } 1191 1192 if (!dev_info || !sys_info) 1193 return -ENODEV; 1194 1195 msb->cylinders = be16_to_cpu(dev_info->cylinders); 1196 msb->heads = be16_to_cpu(dev_info->heads); 1197 msb->sectors_per_track = be16_to_cpu(dev_info->sectors_per_track); 1198 1199 msb->page_size = be16_to_cpu(sys_info->unit_size); 1200 1201 if (!idr_pre_get(&mspro_block_disk_idr, GFP_KERNEL)) 1202 return -ENOMEM; 1203 1204 mutex_lock(&mspro_block_disk_lock); 1205 rc = idr_get_new(&mspro_block_disk_idr, card, &disk_id); 1206 mutex_unlock(&mspro_block_disk_lock); 1207 1208 if (rc) 1209 return rc; 1210 1211 if ((disk_id << MSPRO_BLOCK_PART_SHIFT) > 255) { 1212 rc = -ENOSPC; 1213 goto out_release_id; 1214 } 1215 1216 msb->disk = alloc_disk(1 << MSPRO_BLOCK_PART_SHIFT); 1217 if (!msb->disk) { 1218 rc = -ENOMEM; 1219 goto out_release_id; 1220 } 1221 1222 msb->queue = blk_init_queue(mspro_block_submit_req, &msb->q_lock); 1223 if (!msb->queue) { 1224 rc = -ENOMEM; 1225 goto out_put_disk; 1226 } 1227 1228 msb->queue->queuedata = card; 1229 blk_queue_prep_rq(msb->queue, mspro_block_prepare_req); 1230 1231 blk_queue_bounce_limit(msb->queue, limit); 1232 blk_queue_max_sectors(msb->queue, MSPRO_BLOCK_MAX_PAGES); 1233 blk_queue_max_phys_segments(msb->queue, MSPRO_BLOCK_MAX_SEGS); 1234 blk_queue_max_hw_segments(msb->queue, MSPRO_BLOCK_MAX_SEGS); 1235 blk_queue_max_segment_size(msb->queue, 1236 MSPRO_BLOCK_MAX_PAGES * msb->page_size); 1237 1238 msb->disk->major = major; 1239 msb->disk->first_minor = disk_id << MSPRO_BLOCK_PART_SHIFT; 1240 msb->disk->fops = &ms_block_bdops; 1241 msb->usage_count = 1; 1242 msb->disk->private_data = msb; 1243 msb->disk->queue = msb->queue; 1244 msb->disk->driverfs_dev = &card->dev; 1245 1246 sprintf(msb->disk->disk_name, "mspblk%d", disk_id); 1247 1248 blk_queue_hardsect_size(msb->queue, msb->page_size); 1249 1250 capacity = be16_to_cpu(sys_info->user_block_count); 1251 capacity *= be16_to_cpu(sys_info->block_size); 1252 capacity *= msb->page_size >> 9; 1253 set_capacity(msb->disk, capacity); 1254 dev_dbg(&card->dev, "capacity set %ld\n", capacity); 1255 1256 add_disk(msb->disk); 1257 msb->active = 1; 1258 return 0; 1259 1260 out_put_disk: 1261 put_disk(msb->disk); 1262 out_release_id: 1263 mutex_lock(&mspro_block_disk_lock); 1264 idr_remove(&mspro_block_disk_idr, disk_id); 1265 mutex_unlock(&mspro_block_disk_lock); 1266 return rc; 1267 } 1268 1269 static void mspro_block_data_clear(struct mspro_block_data *msb) 1270 { 1271 int cnt; 1272 struct mspro_sys_attr *s_attr; 1273 1274 if (msb->attr_group.attrs) { 1275 for (cnt = 0; msb->attr_group.attrs[cnt]; ++cnt) { 1276 s_attr = mspro_from_sysfs_attr(msb->attr_group 1277 .attrs[cnt]); 1278 kfree(s_attr->data); 1279 kfree(s_attr); 1280 } 1281 kfree(msb->attr_group.attrs); 1282 } 1283 1284 msb->card = NULL; 1285 } 1286 1287 static int mspro_block_check_card(struct memstick_dev *card) 1288 { 1289 struct mspro_block_data *msb = memstick_get_drvdata(card); 1290 1291 return (msb->active == 1); 1292 } 1293 1294 static int mspro_block_probe(struct memstick_dev *card) 1295 { 1296 struct mspro_block_data *msb; 1297 int rc = 0; 1298 1299 msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL); 1300 if (!msb) 1301 return -ENOMEM; 1302 memstick_set_drvdata(card, msb); 1303 msb->card = card; 1304 spin_lock_init(&msb->q_lock); 1305 1306 rc = mspro_block_init_card(card); 1307 1308 if (rc) 1309 goto out_free; 1310 1311 rc = sysfs_create_group(&card->dev.kobj, &msb->attr_group); 1312 if (rc) 1313 goto out_free; 1314 1315 rc = mspro_block_init_disk(card); 1316 if (!rc) { 1317 card->check = mspro_block_check_card; 1318 card->stop = mspro_block_stop; 1319 card->start = mspro_block_start; 1320 return 0; 1321 } 1322 1323 sysfs_remove_group(&card->dev.kobj, &msb->attr_group); 1324 out_free: 1325 memstick_set_drvdata(card, NULL); 1326 mspro_block_data_clear(msb); 1327 kfree(msb); 1328 return rc; 1329 } 1330 1331 static void mspro_block_remove(struct memstick_dev *card) 1332 { 1333 struct mspro_block_data *msb = memstick_get_drvdata(card); 1334 unsigned long flags; 1335 1336 del_gendisk(msb->disk); 1337 dev_dbg(&card->dev, "mspro block remove\n"); 1338 spin_lock_irqsave(&msb->q_lock, flags); 1339 msb->eject = 1; 1340 blk_start_queue(msb->queue); 1341 spin_unlock_irqrestore(&msb->q_lock, flags); 1342 1343 blk_cleanup_queue(msb->queue); 1344 msb->queue = NULL; 1345 1346 sysfs_remove_group(&card->dev.kobj, &msb->attr_group); 1347 1348 mutex_lock(&mspro_block_disk_lock); 1349 mspro_block_data_clear(msb); 1350 mutex_unlock(&mspro_block_disk_lock); 1351 1352 mspro_block_disk_release(msb->disk); 1353 memstick_set_drvdata(card, NULL); 1354 } 1355 1356 #ifdef CONFIG_PM 1357 1358 static int mspro_block_suspend(struct memstick_dev *card, pm_message_t state) 1359 { 1360 struct mspro_block_data *msb = memstick_get_drvdata(card); 1361 unsigned long flags; 1362 1363 spin_lock_irqsave(&msb->q_lock, flags); 1364 blk_stop_queue(msb->queue); 1365 msb->active = 0; 1366 spin_unlock_irqrestore(&msb->q_lock, flags); 1367 1368 return 0; 1369 } 1370 1371 static int mspro_block_resume(struct memstick_dev *card) 1372 { 1373 struct mspro_block_data *msb = memstick_get_drvdata(card); 1374 unsigned long flags; 1375 int rc = 0; 1376 1377 #ifdef CONFIG_MEMSTICK_UNSAFE_RESUME 1378 1379 struct mspro_block_data *new_msb; 1380 struct memstick_host *host = card->host; 1381 struct mspro_sys_attr *s_attr, *r_attr; 1382 unsigned char cnt; 1383 1384 mutex_lock(&host->lock); 1385 new_msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL); 1386 if (!new_msb) { 1387 rc = -ENOMEM; 1388 goto out_unlock; 1389 } 1390 1391 new_msb->card = card; 1392 memstick_set_drvdata(card, new_msb); 1393 if (mspro_block_init_card(card)) 1394 goto out_free; 1395 1396 for (cnt = 0; new_msb->attr_group.attrs[cnt] 1397 && msb->attr_group.attrs[cnt]; ++cnt) { 1398 s_attr = mspro_from_sysfs_attr(new_msb->attr_group.attrs[cnt]); 1399 r_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[cnt]); 1400 1401 if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO 1402 && r_attr->id == s_attr->id) { 1403 if (memcmp(s_attr->data, r_attr->data, s_attr->size)) 1404 break; 1405 1406 msb->active = 1; 1407 break; 1408 } 1409 } 1410 1411 out_free: 1412 memstick_set_drvdata(card, msb); 1413 mspro_block_data_clear(new_msb); 1414 kfree(new_msb); 1415 out_unlock: 1416 mutex_unlock(&host->lock); 1417 1418 #endif /* CONFIG_MEMSTICK_UNSAFE_RESUME */ 1419 1420 spin_lock_irqsave(&msb->q_lock, flags); 1421 blk_start_queue(msb->queue); 1422 spin_unlock_irqrestore(&msb->q_lock, flags); 1423 return rc; 1424 } 1425 1426 #else 1427 1428 #define mspro_block_suspend NULL 1429 #define mspro_block_resume NULL 1430 1431 #endif /* CONFIG_PM */ 1432 1433 static struct memstick_device_id mspro_block_id_tbl[] = { 1434 {MEMSTICK_MATCH_ALL, MEMSTICK_TYPE_PRO, MEMSTICK_CATEGORY_STORAGE_DUO, 1435 MEMSTICK_CLASS_DUO}, 1436 {} 1437 }; 1438 1439 1440 static struct memstick_driver mspro_block_driver = { 1441 .driver = { 1442 .name = DRIVER_NAME, 1443 .owner = THIS_MODULE 1444 }, 1445 .id_table = mspro_block_id_tbl, 1446 .probe = mspro_block_probe, 1447 .remove = mspro_block_remove, 1448 .suspend = mspro_block_suspend, 1449 .resume = mspro_block_resume 1450 }; 1451 1452 static int __init mspro_block_init(void) 1453 { 1454 int rc = -ENOMEM; 1455 1456 rc = register_blkdev(major, DRIVER_NAME); 1457 if (rc < 0) { 1458 printk(KERN_ERR DRIVER_NAME ": failed to register " 1459 "major %d, error %d\n", major, rc); 1460 return rc; 1461 } 1462 if (!major) 1463 major = rc; 1464 1465 rc = memstick_register_driver(&mspro_block_driver); 1466 if (rc) 1467 unregister_blkdev(major, DRIVER_NAME); 1468 return rc; 1469 } 1470 1471 static void __exit mspro_block_exit(void) 1472 { 1473 memstick_unregister_driver(&mspro_block_driver); 1474 unregister_blkdev(major, DRIVER_NAME); 1475 idr_destroy(&mspro_block_disk_idr); 1476 } 1477 1478 module_init(mspro_block_init); 1479 module_exit(mspro_block_exit); 1480 1481 MODULE_LICENSE("GPL"); 1482 MODULE_AUTHOR("Alex Dubov"); 1483 MODULE_DESCRIPTION("Sony MemoryStickPro block device driver"); 1484 MODULE_DEVICE_TABLE(memstick, mspro_block_id_tbl); 1485