1 /*- 2 * Copyright (c) 2006 Bernd Walter. All rights reserved. 3 * Copyright (c) 2006 M. Warner Losh. All rights reserved. 4 * Copyright (c) 2017 Marius Strobl <marius@FreeBSD.org> 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 * 26 * Portions of this software may have been developed with reference to 27 * the SD Simplified Specification. The following disclaimer may apply: 28 * 29 * The following conditions apply to the release of the simplified 30 * specification ("Simplified Specification") by the SD Card Association and 31 * the SD Group. The Simplified Specification is a subset of the complete SD 32 * Specification which is owned by the SD Card Association and the SD 33 * Group. This Simplified Specification is provided on a non-confidential 34 * basis subject to the disclaimers below. Any implementation of the 35 * Simplified Specification may require a license from the SD Card 36 * Association, SD Group, SD-3C LLC or other third parties. 37 * 38 * Disclaimers: 39 * 40 * The information contained in the Simplified Specification is presented only 41 * as a standard specification for SD Cards and SD Host/Ancillary products and 42 * is provided "AS-IS" without any representations or warranties of any 43 * kind. No responsibility is assumed by the SD Group, SD-3C LLC or the SD 44 * Card Association for any damages, any infringements of patents or other 45 * right of the SD Group, SD-3C LLC, the SD Card Association or any third 46 * parties, which may result from its use. No license is granted by 47 * implication, estoppel or otherwise under any patent or other rights of the 48 * SD Group, SD-3C LLC, the SD Card Association or any third party. Nothing 49 * herein shall be construed as an obligation by the SD Group, the SD-3C LLC 50 * or the SD Card Association to disclose or distribute any technical 51 * information, know-how or other confidential information to any third party. 52 */ 53 54 #include <sys/cdefs.h> 55 __FBSDID("$FreeBSD$"); 56 57 #include <sys/param.h> 58 #include <sys/systm.h> 59 #include <sys/bio.h> 60 #include <sys/bus.h> 61 #include <sys/conf.h> 62 #include <sys/fcntl.h> 63 #include <sys/ioccom.h> 64 #include <sys/kernel.h> 65 #include <sys/kthread.h> 66 #include <sys/lock.h> 67 #include <sys/malloc.h> 68 #include <sys/module.h> 69 #include <sys/mutex.h> 70 #include <sys/slicer.h> 71 #include <sys/time.h> 72 73 #include <geom/geom.h> 74 #include <geom/geom_disk.h> 75 76 #include <dev/mmc/bridge.h> 77 #include <dev/mmc/mmc_ioctl.h> 78 #include <dev/mmc/mmc_subr.h> 79 #include <dev/mmc/mmcbrvar.h> 80 #include <dev/mmc/mmcreg.h> 81 #include <dev/mmc/mmcvar.h> 82 83 #include "mmcbus_if.h" 84 85 #if __FreeBSD_version < 800002 86 #define kproc_create kthread_create 87 #define kproc_exit kthread_exit 88 #endif 89 90 #define MMCSD_CMD_RETRIES 5 91 92 #define MMCSD_FMT_BOOT "mmcsd%dboot" 93 #define MMCSD_FMT_GP "mmcsd%dgp" 94 #define MMCSD_FMT_RPMB "mmcsd%drpmb" 95 #define MMCSD_LABEL_ENH "enh" 96 97 #define MMCSD_PART_NAMELEN (16 + 1) 98 99 struct mmcsd_softc; 100 101 struct mmcsd_part { 102 struct mtx disk_mtx; 103 struct mtx ioctl_mtx; 104 struct mmcsd_softc *sc; 105 struct disk *disk; 106 struct proc *p; 107 struct bio_queue_head bio_queue; 108 daddr_t eblock, eend; /* Range remaining after the last erase. */ 109 u_int cnt; 110 u_int type; 111 int running; 112 int suspend; 113 int ioctl; 114 bool ro; 115 char name[MMCSD_PART_NAMELEN]; 116 }; 117 118 struct mmcsd_softc { 119 device_t dev; 120 device_t mmcbr; 121 struct mmcsd_part *part[MMC_PART_MAX]; 122 enum mmc_card_mode mode; 123 u_int max_data; /* Maximum data size [blocks] */ 124 u_int erase_sector; /* Device native erase sector size [blocks] */ 125 uint8_t high_cap; /* High Capacity device (block addressed) */ 126 uint8_t part_curr; /* Partition currently switched to */ 127 uint8_t ext_csd[MMC_EXTCSD_SIZE]; 128 uint16_t rca; 129 uint32_t part_time; /* Partition switch timeout [us] */ 130 off_t enh_base; /* Enhanced user data area slice base ... */ 131 off_t enh_size; /* ... and size [bytes] */ 132 int log_count; 133 struct timeval log_time; 134 struct cdev *rpmb_dev; 135 }; 136 137 static const char *errmsg[] = 138 { 139 "None", 140 "Timeout", 141 "Bad CRC", 142 "Fifo", 143 "Failed", 144 "Invalid", 145 "NO MEMORY" 146 }; 147 148 #define LOG_PPS 5 /* Log no more than 5 errors per second. */ 149 150 /* bus entry points */ 151 static int mmcsd_attach(device_t dev); 152 static int mmcsd_detach(device_t dev); 153 static int mmcsd_probe(device_t dev); 154 155 /* disk routines */ 156 static int mmcsd_close(struct disk *dp); 157 static int mmcsd_dump(void *arg, void *virtual, vm_offset_t physical, 158 off_t offset, size_t length); 159 static int mmcsd_getattr(struct bio *); 160 static int mmcsd_ioctl_disk(struct disk *disk, u_long cmd, void *data, 161 int fflag, struct thread *td); 162 static int mmcsd_open(struct disk *dp); 163 static void mmcsd_strategy(struct bio *bp); 164 static void mmcsd_task(void *arg); 165 166 /* RMPB cdev interface */ 167 static int mmcsd_ioctl_rpmb(struct cdev *dev, u_long cmd, caddr_t data, 168 int fflag, struct thread *td); 169 170 static void mmcsd_add_part(struct mmcsd_softc *sc, u_int type, 171 const char *name, u_int cnt, off_t media_size, off_t erase_size, bool ro); 172 static int mmcsd_bus_bit_width(device_t dev); 173 static daddr_t mmcsd_delete(struct mmcsd_part *part, struct bio *bp); 174 static int mmcsd_ioctl(struct mmcsd_part *part, u_long cmd, void *data, 175 int fflag); 176 static int mmcsd_ioctl_cmd(struct mmcsd_part *part, struct mmc_ioc_cmd *mic, 177 int fflag); 178 static uintmax_t mmcsd_pretty_size(off_t size, char *unit); 179 static daddr_t mmcsd_rw(struct mmcsd_part *part, struct bio *bp); 180 static int mmcsd_set_blockcount(struct mmcsd_softc *sc, u_int count, bool rel); 181 static int mmcsd_slicer(device_t dev, const char *provider, 182 struct flash_slice *slices, int *nslices); 183 static int mmcsd_switch_part(device_t bus, device_t dev, uint16_t rca, 184 u_int part); 185 186 #define MMCSD_DISK_LOCK(_part) mtx_lock(&(_part)->disk_mtx) 187 #define MMCSD_DISK_UNLOCK(_part) mtx_unlock(&(_part)->disk_mtx) 188 #define MMCSD_DISK_LOCK_INIT(_part) \ 189 mtx_init(&(_part)->disk_mtx, (_part)->name, "mmcsd disk", MTX_DEF) 190 #define MMCSD_DISK_LOCK_DESTROY(_part) mtx_destroy(&(_part)->disk_mtx); 191 #define MMCSD_DISK_ASSERT_LOCKED(_part) \ 192 mtx_assert(&(_part)->disk_mtx, MA_OWNED); 193 #define MMCSD_DISK_ASSERT_UNLOCKED(_part) \ 194 mtx_assert(&(_part)->disk_mtx, MA_NOTOWNED); 195 196 #define MMCSD_IOCTL_LOCK(_part) mtx_lock(&(_part)->ioctl_mtx) 197 #define MMCSD_IOCTL_UNLOCK(_part) mtx_unlock(&(_part)->ioctl_mtx) 198 #define MMCSD_IOCTL_LOCK_INIT(_part) \ 199 mtx_init(&(_part)->ioctl_mtx, (_part)->name, "mmcsd IOCTL", MTX_DEF) 200 #define MMCSD_IOCTL_LOCK_DESTROY(_part) mtx_destroy(&(_part)->ioctl_mtx); 201 #define MMCSD_IOCTL_ASSERT_LOCKED(_part) \ 202 mtx_assert(&(_part)->ioctl_mtx, MA_OWNED); 203 #define MMCSD_IOCLT_ASSERT_UNLOCKED(_part) \ 204 mtx_assert(&(_part)->ioctl_mtx, MA_NOTOWNED); 205 206 static int 207 mmcsd_probe(device_t dev) 208 { 209 210 device_quiet(dev); 211 device_set_desc(dev, "MMC/SD Memory Card"); 212 return (0); 213 } 214 215 static int 216 mmcsd_attach(device_t dev) 217 { 218 device_t mmcbr; 219 struct mmcsd_softc *sc; 220 const uint8_t *ext_csd; 221 off_t erase_size, sector_size, size, wp_size; 222 uintmax_t bytes; 223 int err, i; 224 uint8_t rev; 225 bool comp, ro; 226 char unit[2]; 227 228 sc = device_get_softc(dev); 229 sc->dev = dev; 230 sc->mmcbr = mmcbr = device_get_parent(dev); 231 sc->mode = mmcbr_get_mode(mmcbr); 232 /* 233 * Note that in principle with an SDHCI-like re-tuning implementation, 234 * the maximum data size can change at runtime due to a device removal/ 235 * insertion that results in switches to/from a transfer mode involving 236 * re-tuning, iff there are multiple devices on a given bus. Until now 237 * mmc(4) lacks support for rescanning already attached buses, however, 238 * and sdhci(4) to date has no support for shared buses in the first 239 * place either. 240 */ 241 sc->max_data = mmc_get_max_data(dev); 242 sc->erase_sector = mmc_get_erase_sector(dev); 243 sc->high_cap = mmc_get_high_cap(dev); 244 sc->rca = mmc_get_rca(dev); 245 246 /* Only MMC >= 4.x devices support EXT_CSD. */ 247 if (mmc_get_spec_vers(dev) >= 4) { 248 MMCBUS_ACQUIRE_BUS(mmcbr, dev); 249 err = mmc_send_ext_csd(mmcbr, dev, sc->ext_csd); 250 MMCBUS_RELEASE_BUS(mmcbr, dev); 251 if (err != MMC_ERR_NONE) 252 bzero(sc->ext_csd, sizeof(sc->ext_csd)); 253 } 254 ext_csd = sc->ext_csd; 255 256 /* 257 * Enhanced user data area and general purpose partitions are only 258 * supported in revision 1.4 (EXT_CSD_REV == 4) and later, the RPMB 259 * partition in revision 1.5 (MMC v4.41, EXT_CSD_REV == 5) and later. 260 */ 261 rev = ext_csd[EXT_CSD_REV]; 262 263 /* 264 * Ignore user-creatable enhanced user data area and general purpose 265 * partitions partitions as long as partitioning hasn't been finished. 266 */ 267 comp = (ext_csd[EXT_CSD_PART_SET] & EXT_CSD_PART_SET_COMPLETED) != 0; 268 269 /* 270 * Add enhanced user data area slice, unless it spans the entirety of 271 * the user data area. The enhanced area is of a multiple of high 272 * capacity write protect groups ((ERASE_GRP_SIZE + HC_WP_GRP_SIZE) * 273 * 512 KB) and its offset given in either sectors or bytes, depending 274 * on whether it's a high capacity device or not. 275 * NB: The slicer and its slices need to be registered before adding 276 * the disk for the corresponding user data area as re-tasting is 277 * racy. 278 */ 279 sector_size = mmc_get_sector_size(dev); 280 size = ext_csd[EXT_CSD_ENH_SIZE_MULT] + 281 (ext_csd[EXT_CSD_ENH_SIZE_MULT + 1] << 8) + 282 (ext_csd[EXT_CSD_ENH_SIZE_MULT + 2] << 16); 283 if (rev >= 4 && comp == TRUE && size > 0 && 284 (ext_csd[EXT_CSD_PART_SUPPORT] & 285 EXT_CSD_PART_SUPPORT_ENH_ATTR_EN) != 0 && 286 (ext_csd[EXT_CSD_PART_ATTR] & (EXT_CSD_PART_ATTR_ENH_USR)) != 0) { 287 erase_size = ext_csd[EXT_CSD_ERASE_GRP_SIZE] * 1024 * 288 MMC_SECTOR_SIZE; 289 wp_size = ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 290 size *= erase_size * wp_size; 291 if (size != mmc_get_media_size(dev) * sector_size) { 292 sc->enh_size = size; 293 sc->enh_base = (ext_csd[EXT_CSD_ENH_START_ADDR] + 294 (ext_csd[EXT_CSD_ENH_START_ADDR + 1] << 8) + 295 (ext_csd[EXT_CSD_ENH_START_ADDR + 2] << 16) + 296 (ext_csd[EXT_CSD_ENH_START_ADDR + 3] << 24)) * 297 (sc->high_cap != 0 ? MMC_SECTOR_SIZE : 1); 298 } else if (bootverbose) 299 device_printf(dev, 300 "enhanced user data area spans entire device\n"); 301 } 302 303 /* 304 * Add default partition. This may be the only one or the user 305 * data area in case partitions are supported. 306 */ 307 ro = mmc_get_read_only(dev); 308 mmcsd_add_part(sc, EXT_CSD_PART_CONFIG_ACC_DEFAULT, "mmcsd", 309 device_get_unit(dev), mmc_get_media_size(dev) * sector_size, 310 sc->erase_sector * sector_size, ro); 311 312 if (mmc_get_spec_vers(dev) < 3) 313 return (0); 314 315 /* Belatedly announce enhanced user data slice. */ 316 if (sc->enh_size != 0) { 317 bytes = mmcsd_pretty_size(size, unit); 318 printf(FLASH_SLICES_FMT ": %ju%sB enhanced user data area " 319 "slice offset 0x%jx at %s\n", device_get_nameunit(dev), 320 MMCSD_LABEL_ENH, bytes, unit, (uintmax_t)sc->enh_base, 321 device_get_nameunit(dev)); 322 } 323 324 /* 325 * Determine partition switch timeout (provided in units of 10 ms) 326 * and ensure it's at least 300 ms as some eMMC chips lie. 327 */ 328 sc->part_time = max(ext_csd[EXT_CSD_PART_SWITCH_TO] * 10 * 1000, 329 300 * 1000); 330 331 /* Add boot partitions, which are of a fixed multiple of 128 KB. */ 332 size = ext_csd[EXT_CSD_BOOT_SIZE_MULT] * MMC_BOOT_RPMB_BLOCK_SIZE; 333 if (size > 0 && (mmcbr_get_caps(mmcbr) & MMC_CAP_BOOT_NOACC) == 0) { 334 mmcsd_add_part(sc, EXT_CSD_PART_CONFIG_ACC_BOOT0, 335 MMCSD_FMT_BOOT, 0, size, MMC_BOOT_RPMB_BLOCK_SIZE, 336 ro | ((ext_csd[EXT_CSD_BOOT_WP_STATUS] & 337 EXT_CSD_BOOT_WP_STATUS_BOOT0_MASK) != 0)); 338 mmcsd_add_part(sc, EXT_CSD_PART_CONFIG_ACC_BOOT1, 339 MMCSD_FMT_BOOT, 1, size, MMC_BOOT_RPMB_BLOCK_SIZE, 340 ro | ((ext_csd[EXT_CSD_BOOT_WP_STATUS] & 341 EXT_CSD_BOOT_WP_STATUS_BOOT1_MASK) != 0)); 342 } 343 344 /* Add RPMB partition, which also is of a fixed multiple of 128 KB. */ 345 size = ext_csd[EXT_CSD_RPMB_MULT] * MMC_BOOT_RPMB_BLOCK_SIZE; 346 if (rev >= 5 && size > 0) 347 mmcsd_add_part(sc, EXT_CSD_PART_CONFIG_ACC_RPMB, 348 MMCSD_FMT_RPMB, 0, size, MMC_BOOT_RPMB_BLOCK_SIZE, ro); 349 350 if (rev <= 3 || comp == FALSE) 351 return (0); 352 353 /* 354 * Add general purpose partitions, which are of a multiple of high 355 * capacity write protect groups, too. 356 */ 357 if ((ext_csd[EXT_CSD_PART_SUPPORT] & EXT_CSD_PART_SUPPORT_EN) != 0) { 358 erase_size = ext_csd[EXT_CSD_ERASE_GRP_SIZE] * 1024 * 359 MMC_SECTOR_SIZE; 360 wp_size = ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 361 for (i = 0; i < MMC_PART_GP_MAX; i++) { 362 size = ext_csd[EXT_CSD_GP_SIZE_MULT + i * 3] + 363 (ext_csd[EXT_CSD_GP_SIZE_MULT + i * 3 + 1] << 8) + 364 (ext_csd[EXT_CSD_GP_SIZE_MULT + i * 3 + 2] << 16); 365 if (size == 0) 366 continue; 367 mmcsd_add_part(sc, EXT_CSD_PART_CONFIG_ACC_GP0 + i, 368 MMCSD_FMT_GP, i, size * erase_size * wp_size, 369 erase_size, ro); 370 } 371 } 372 return (0); 373 } 374 375 static uintmax_t 376 mmcsd_pretty_size(off_t size, char *unit) 377 { 378 uintmax_t bytes; 379 int i; 380 381 /* 382 * Display in most natural units. There's no card < 1MB. However, 383 * RPMB partitions occasionally are smaller than that, though. The 384 * SD standard goes to 2 GiB due to its reliance on FAT, but the data 385 * format supports up to 4 GiB and some card makers push it up to this 386 * limit. The SDHC standard only goes to 32 GiB due to FAT32, but the 387 * data format supports up to 2 TiB however. 2048 GB isn't too ugly, 388 * so we note it in passing here and don't add the code to print TB). 389 * Since these cards are sold in terms of MB and GB not MiB and GiB, 390 * report them like that. We also round to the nearest unit, since 391 * many cards are a few percent short, even of the power of 10 size. 392 */ 393 bytes = size; 394 unit[0] = unit[1] = '\0'; 395 for (i = 0; i <= 2 && bytes >= 1000; i++) { 396 bytes = (bytes + 1000 / 2 - 1) / 1000; 397 switch (i) { 398 case 0: 399 unit[0] = 'k'; 400 break; 401 case 1: 402 unit[0] = 'M'; 403 break; 404 case 2: 405 unit[0] = 'G'; 406 break; 407 default: 408 break; 409 } 410 } 411 return (bytes); 412 } 413 414 static struct cdevsw mmcsd_rpmb_cdevsw = { 415 .d_version = D_VERSION, 416 .d_name = "mmcsdrpmb", 417 .d_ioctl = mmcsd_ioctl_rpmb 418 }; 419 420 static void 421 mmcsd_add_part(struct mmcsd_softc *sc, u_int type, const char *name, u_int cnt, 422 off_t media_size, off_t erase_size, bool ro) 423 { 424 struct make_dev_args args; 425 device_t dev, mmcbr; 426 const char *ext; 427 const uint8_t *ext_csd; 428 struct mmcsd_part *part; 429 struct disk *d; 430 uintmax_t bytes; 431 u_int gp; 432 uint32_t speed; 433 uint8_t extattr; 434 bool enh; 435 char unit[2]; 436 437 dev = sc->dev; 438 mmcbr = sc->mmcbr; 439 part = sc->part[type] = malloc(sizeof(*part), M_DEVBUF, 440 M_WAITOK | M_ZERO); 441 part->sc = sc; 442 part->cnt = cnt; 443 part->type = type; 444 part->ro = ro; 445 snprintf(part->name, sizeof(part->name), name, device_get_unit(dev)); 446 447 MMCSD_IOCTL_LOCK_INIT(part); 448 449 /* 450 * For the RPMB partition, allow IOCTL access only. 451 * NB: If ever attaching RPMB partitions to disk(9), the re-tuning 452 * implementation and especially its pausing need to be revisited, 453 * because then re-tuning requests may be issued by the IOCTL half 454 * of this driver while re-tuning is already paused by the disk(9) 455 * one and vice versa. 456 */ 457 if (type == EXT_CSD_PART_CONFIG_ACC_RPMB) { 458 make_dev_args_init(&args); 459 args.mda_flags = MAKEDEV_CHECKNAME | MAKEDEV_WAITOK; 460 args.mda_devsw = &mmcsd_rpmb_cdevsw; 461 args.mda_uid = UID_ROOT; 462 args.mda_gid = GID_OPERATOR; 463 args.mda_mode = 0640; 464 args.mda_si_drv1 = part; 465 if (make_dev_s(&args, &sc->rpmb_dev, "%s", part->name) != 0) { 466 device_printf(dev, "Failed to make RPMB device\n"); 467 free(part, M_DEVBUF); 468 return; 469 } 470 } else { 471 MMCSD_DISK_LOCK_INIT(part); 472 473 d = part->disk = disk_alloc(); 474 d->d_open = mmcsd_open; 475 d->d_close = mmcsd_close; 476 d->d_strategy = mmcsd_strategy; 477 d->d_ioctl = mmcsd_ioctl_disk; 478 d->d_dump = mmcsd_dump; 479 d->d_getattr = mmcsd_getattr; 480 d->d_name = part->name; 481 d->d_drv1 = part; 482 d->d_sectorsize = mmc_get_sector_size(dev); 483 d->d_maxsize = sc->max_data * d->d_sectorsize; 484 d->d_mediasize = media_size; 485 d->d_stripesize = erase_size; 486 d->d_unit = cnt; 487 d->d_flags = DISKFLAG_CANDELETE; 488 d->d_delmaxsize = erase_size; 489 strlcpy(d->d_ident, mmc_get_card_sn_string(dev), 490 sizeof(d->d_ident)); 491 strlcpy(d->d_descr, mmc_get_card_id_string(dev), 492 sizeof(d->d_descr)); 493 d->d_rotation_rate = DISK_RR_NON_ROTATING; 494 495 disk_create(d, DISK_VERSION); 496 bioq_init(&part->bio_queue); 497 498 part->running = 1; 499 kproc_create(&mmcsd_task, part, &part->p, 0, 0, 500 "%s%d: mmc/sd card", part->name, cnt); 501 } 502 503 bytes = mmcsd_pretty_size(media_size, unit); 504 if (type == EXT_CSD_PART_CONFIG_ACC_DEFAULT) { 505 speed = mmcbr_get_clock(mmcbr); 506 printf("%s%d: %ju%sB <%s>%s at %s %d.%01dMHz/%dbit/%d-block\n", 507 part->name, cnt, bytes, unit, mmc_get_card_id_string(dev), 508 ro ? " (read-only)" : "", device_get_nameunit(mmcbr), 509 speed / 1000000, (speed / 100000) % 10, 510 mmcsd_bus_bit_width(dev), sc->max_data); 511 } else if (type == EXT_CSD_PART_CONFIG_ACC_RPMB) { 512 printf("%s: %ju%sB partion %d%s at %s\n", part->name, bytes, 513 unit, type, ro ? " (read-only)" : "", 514 device_get_nameunit(dev)); 515 } else { 516 enh = false; 517 ext = NULL; 518 extattr = 0; 519 if (type >= EXT_CSD_PART_CONFIG_ACC_GP0 && 520 type <= EXT_CSD_PART_CONFIG_ACC_GP3) { 521 ext_csd = sc->ext_csd; 522 gp = type - EXT_CSD_PART_CONFIG_ACC_GP0; 523 if ((ext_csd[EXT_CSD_PART_SUPPORT] & 524 EXT_CSD_PART_SUPPORT_ENH_ATTR_EN) != 0 && 525 (ext_csd[EXT_CSD_PART_ATTR] & 526 (EXT_CSD_PART_ATTR_ENH_GP0 << gp)) != 0) 527 enh = true; 528 else if ((ext_csd[EXT_CSD_PART_SUPPORT] & 529 EXT_CSD_PART_SUPPORT_EXT_ATTR_EN) != 0) { 530 extattr = (ext_csd[EXT_CSD_EXT_PART_ATTR + 531 (gp / 2)] >> (4 * (gp % 2))) & 0xF; 532 switch (extattr) { 533 case EXT_CSD_EXT_PART_ATTR_DEFAULT: 534 break; 535 case EXT_CSD_EXT_PART_ATTR_SYSTEMCODE: 536 ext = "system code"; 537 break; 538 case EXT_CSD_EXT_PART_ATTR_NPERSISTENT: 539 ext = "non-persistent"; 540 break; 541 default: 542 ext = "reserved"; 543 break; 544 } 545 } 546 } 547 if (ext == NULL) 548 printf("%s%d: %ju%sB partion %d%s%s at %s\n", 549 part->name, cnt, bytes, unit, type, enh ? 550 " enhanced" : "", ro ? " (read-only)" : "", 551 device_get_nameunit(dev)); 552 else 553 printf("%s%d: %ju%sB partion %d extended 0x%x " 554 "(%s)%s at %s\n", part->name, cnt, bytes, unit, 555 type, extattr, ext, ro ? " (read-only)" : "", 556 device_get_nameunit(dev)); 557 } 558 } 559 560 static int 561 mmcsd_slicer(device_t dev, const char *provider, 562 struct flash_slice *slices, int *nslices) 563 { 564 char name[MMCSD_PART_NAMELEN]; 565 struct mmcsd_softc *sc; 566 struct mmcsd_part *part; 567 568 *nslices = 0; 569 if (slices == NULL) 570 return (ENOMEM); 571 572 sc = device_get_softc(dev); 573 if (sc->enh_size == 0) 574 return (ENXIO); 575 576 part = sc->part[EXT_CSD_PART_CONFIG_ACC_DEFAULT]; 577 snprintf(name, sizeof(name), "%s%d", part->disk->d_name, 578 part->disk->d_unit); 579 if (strcmp(name, provider) != 0) 580 return (ENXIO); 581 582 *nslices = 1; 583 slices[0].base = sc->enh_base; 584 slices[0].size = sc->enh_size; 585 slices[0].label = MMCSD_LABEL_ENH; 586 return (0); 587 } 588 589 static int 590 mmcsd_detach(device_t dev) 591 { 592 struct mmcsd_softc *sc = device_get_softc(dev); 593 struct mmcsd_part *part; 594 int i; 595 596 for (i = 0; i < MMC_PART_MAX; i++) { 597 part = sc->part[i]; 598 if (part != NULL) { 599 if (part->disk != NULL) { 600 MMCSD_DISK_LOCK(part); 601 part->suspend = 0; 602 if (part->running > 0) { 603 /* kill thread */ 604 part->running = 0; 605 wakeup(part); 606 /* wait for thread to finish. */ 607 while (part->running != -1) 608 msleep(part, &part->disk_mtx, 0, 609 "mmcsd disk detach", 0); 610 } 611 MMCSD_DISK_UNLOCK(part); 612 } 613 MMCSD_IOCTL_LOCK(part); 614 while (part->ioctl > 0) 615 msleep(part, &part->ioctl_mtx, 0, 616 "mmcsd IOCTL detach", 0); 617 part->ioctl = -1; 618 MMCSD_IOCTL_UNLOCK(part); 619 } 620 } 621 622 if (sc->rpmb_dev != NULL) 623 destroy_dev(sc->rpmb_dev); 624 625 for (i = 0; i < MMC_PART_MAX; i++) { 626 part = sc->part[i]; 627 if (part != NULL) { 628 if (part->disk != NULL) { 629 /* Flush the request queue. */ 630 bioq_flush(&part->bio_queue, NULL, ENXIO); 631 /* kill disk */ 632 disk_destroy(part->disk); 633 634 MMCSD_DISK_LOCK_DESTROY(part); 635 } 636 MMCSD_IOCTL_LOCK_DESTROY(part); 637 free(part, M_DEVBUF); 638 } 639 } 640 return (0); 641 } 642 643 static int 644 mmcsd_suspend(device_t dev) 645 { 646 struct mmcsd_softc *sc = device_get_softc(dev); 647 struct mmcsd_part *part; 648 int i; 649 650 for (i = 0; i < MMC_PART_MAX; i++) { 651 part = sc->part[i]; 652 if (part != NULL) { 653 if (part->disk != NULL) { 654 MMCSD_DISK_LOCK(part); 655 part->suspend = 1; 656 if (part->running > 0) { 657 /* kill thread */ 658 part->running = 0; 659 wakeup(part); 660 /* wait for thread to finish. */ 661 while (part->running != -1) 662 msleep(part, &part->disk_mtx, 0, 663 "mmcsd disk suspension", 0); 664 } 665 MMCSD_DISK_UNLOCK(part); 666 } 667 MMCSD_IOCTL_LOCK(part); 668 while (part->ioctl > 0) 669 msleep(part, &part->ioctl_mtx, 0, 670 "mmcsd IOCTL suspension", 0); 671 part->ioctl = -1; 672 MMCSD_IOCTL_UNLOCK(part); 673 } 674 } 675 return (0); 676 } 677 678 static int 679 mmcsd_resume(device_t dev) 680 { 681 struct mmcsd_softc *sc = device_get_softc(dev); 682 struct mmcsd_part *part; 683 int i; 684 685 for (i = 0; i < MMC_PART_MAX; i++) { 686 part = sc->part[i]; 687 if (part != NULL) { 688 if (part->disk != NULL) { 689 MMCSD_DISK_LOCK(part); 690 part->suspend = 0; 691 if (part->running <= 0) { 692 part->running = 1; 693 MMCSD_DISK_UNLOCK(part); 694 kproc_create(&mmcsd_task, part, 695 &part->p, 0, 0, "%s%d: mmc/sd card", 696 part->name, part->cnt); 697 } else 698 MMCSD_DISK_UNLOCK(part); 699 } 700 MMCSD_IOCTL_LOCK(part); 701 part->ioctl = 0; 702 MMCSD_IOCTL_UNLOCK(part); 703 } 704 } 705 return (0); 706 } 707 708 static int 709 mmcsd_open(struct disk *dp __unused) 710 { 711 712 return (0); 713 } 714 715 static int 716 mmcsd_close(struct disk *dp __unused) 717 { 718 719 return (0); 720 } 721 722 static void 723 mmcsd_strategy(struct bio *bp) 724 { 725 struct mmcsd_softc *sc; 726 struct mmcsd_part *part; 727 728 part = bp->bio_disk->d_drv1; 729 sc = part->sc; 730 MMCSD_DISK_LOCK(part); 731 if (part->running > 0 || part->suspend > 0) { 732 bioq_disksort(&part->bio_queue, bp); 733 MMCSD_DISK_UNLOCK(part); 734 wakeup(part); 735 } else { 736 MMCSD_DISK_UNLOCK(part); 737 biofinish(bp, NULL, ENXIO); 738 } 739 } 740 741 static int 742 mmcsd_ioctl_rpmb(struct cdev *dev, u_long cmd, caddr_t data, 743 int fflag, struct thread *td __unused) 744 { 745 746 return (mmcsd_ioctl(dev->si_drv1, cmd, data, fflag)); 747 } 748 749 static int 750 mmcsd_ioctl_disk(struct disk *disk, u_long cmd, void *data, int fflag, 751 struct thread *td __unused) 752 { 753 754 return (mmcsd_ioctl(disk->d_drv1, cmd, data, fflag)); 755 } 756 757 static int 758 mmcsd_ioctl(struct mmcsd_part *part, u_long cmd, void *data, int fflag) 759 { 760 struct mmc_ioc_cmd *mic; 761 struct mmc_ioc_multi_cmd *mimc; 762 int i, err; 763 u_long cnt, size; 764 765 if ((fflag & FREAD) == 0) 766 return (EBADF); 767 768 err = 0; 769 switch (cmd) { 770 case MMC_IOC_CMD: 771 mic = data; 772 err = mmcsd_ioctl_cmd(part, mic, fflag); 773 break; 774 case MMC_IOC_MULTI_CMD: 775 mimc = data; 776 if (mimc->num_of_cmds == 0) 777 break; 778 if (mimc->num_of_cmds > MMC_IOC_MAX_CMDS) 779 return (EINVAL); 780 cnt = mimc->num_of_cmds; 781 size = sizeof(*mic) * cnt; 782 mic = malloc(size, M_TEMP, M_WAITOK); 783 err = copyin((const void *)mimc->cmds, mic, size); 784 if (err == 0) { 785 for (i = 0; i < cnt; i++) { 786 err = mmcsd_ioctl_cmd(part, &mic[i], fflag); 787 if (err != 0) 788 break; 789 } 790 } 791 free(mic, M_TEMP); 792 break; 793 default: 794 return (ENOIOCTL); 795 } 796 return (err); 797 } 798 799 static int 800 mmcsd_ioctl_cmd(struct mmcsd_part *part, struct mmc_ioc_cmd *mic, int fflag) 801 { 802 struct mmc_command cmd; 803 struct mmc_data data; 804 struct mmcsd_softc *sc; 805 device_t dev, mmcbr; 806 void *dp; 807 u_long len; 808 int err, retries; 809 uint32_t status; 810 uint16_t rca; 811 812 if ((fflag & FWRITE) == 0 && mic->write_flag != 0) 813 return (EBADF); 814 815 if (part->ro == TRUE && mic->write_flag != 0) 816 return (EROFS); 817 818 /* 819 * We don't need to explicitly lock against the disk(9) half of this 820 * driver as MMCBUS_ACQUIRE_BUS() will serialize us. However, it's 821 * necessary to protect against races with detachment and suspension, 822 * especially since it's required to switch away from RPMB partitions 823 * again after an access (see mmcsd_switch_part()). 824 */ 825 MMCSD_IOCTL_LOCK(part); 826 while (part->ioctl != 0) { 827 if (part->ioctl < 0) { 828 MMCSD_IOCTL_UNLOCK(part); 829 return (ENXIO); 830 } 831 msleep(part, &part->ioctl_mtx, 0, "mmcsd IOCTL", 0); 832 } 833 part->ioctl = 1; 834 MMCSD_IOCTL_UNLOCK(part); 835 836 err = 0; 837 dp = NULL; 838 len = mic->blksz * mic->blocks; 839 if (len > MMC_IOC_MAX_BYTES) { 840 err = EOVERFLOW; 841 goto out; 842 } 843 if (len != 0) { 844 dp = malloc(len, M_TEMP, M_WAITOK); 845 err = copyin((void *)(uintptr_t)mic->data_ptr, dp, len); 846 if (err != 0) 847 goto out; 848 } 849 memset(&cmd, 0, sizeof(cmd)); 850 memset(&data, 0, sizeof(data)); 851 cmd.opcode = mic->opcode; 852 cmd.arg = mic->arg; 853 cmd.flags = mic->flags; 854 if (len != 0) { 855 data.len = len; 856 data.data = dp; 857 data.flags = mic->write_flag != 0 ? MMC_DATA_WRITE : 858 MMC_DATA_READ; 859 cmd.data = &data; 860 } 861 sc = part->sc; 862 rca = sc->rca; 863 if (mic->is_acmd == 0) { 864 /* Enforce/patch/restrict RCA-based commands */ 865 switch (cmd.opcode) { 866 case MMC_SET_RELATIVE_ADDR: 867 case MMC_SELECT_CARD: 868 err = EPERM; 869 goto out; 870 case MMC_STOP_TRANSMISSION: 871 if ((cmd.arg & 0x1) == 0) 872 break; 873 /* FALLTHROUGH */ 874 case MMC_SLEEP_AWAKE: 875 case MMC_SEND_CSD: 876 case MMC_SEND_CID: 877 case MMC_SEND_STATUS: 878 case MMC_GO_INACTIVE_STATE: 879 case MMC_FAST_IO: 880 case MMC_APP_CMD: 881 cmd.arg = (cmd.arg & 0x0000FFFF) | (rca << 16); 882 break; 883 default: 884 break; 885 } 886 } 887 dev = sc->dev; 888 mmcbr = sc->mmcbr; 889 MMCBUS_ACQUIRE_BUS(mmcbr, dev); 890 err = mmcsd_switch_part(mmcbr, dev, rca, part->type); 891 if (err != MMC_ERR_NONE) 892 goto release; 893 if (part->type == EXT_CSD_PART_CONFIG_ACC_RPMB) { 894 err = mmcsd_set_blockcount(sc, mic->blocks, 895 mic->write_flag & (1 << 31)); 896 if (err != MMC_ERR_NONE) 897 goto switch_back; 898 } 899 if (mic->is_acmd != 0) 900 (void)mmc_wait_for_app_cmd(mmcbr, dev, rca, &cmd, 0); 901 else 902 (void)mmc_wait_for_cmd(mmcbr, dev, &cmd, 0); 903 if (part->type == EXT_CSD_PART_CONFIG_ACC_RPMB) { 904 /* 905 * If the request went to the RPMB partition, try to ensure 906 * that the command actually has completed ... 907 */ 908 retries = MMCSD_CMD_RETRIES; 909 do { 910 err = mmc_send_status(mmcbr, dev, rca, &status); 911 if (err != MMC_ERR_NONE) 912 break; 913 if (R1_STATUS(status) == 0 && 914 R1_CURRENT_STATE(status) != R1_STATE_PRG) 915 break; 916 DELAY(1000); 917 } while (retries-- > 0); 918 919 switch_back: 920 /* ... and always switch back to the default partition. */ 921 err = mmcsd_switch_part(mmcbr, dev, rca, 922 EXT_CSD_PART_CONFIG_ACC_DEFAULT); 923 if (err != MMC_ERR_NONE) 924 goto release; 925 } 926 /* 927 * If EXT_CSD was changed, our copy is outdated now. Specifically, 928 * the upper bits of EXT_CSD_PART_CONFIG used in mmcsd_switch_part(), 929 * so retrieve EXT_CSD again. 930 */ 931 if (cmd.opcode == MMC_SWITCH_FUNC) { 932 err = mmc_send_ext_csd(mmcbr, dev, sc->ext_csd); 933 if (err != MMC_ERR_NONE) 934 goto release; 935 } 936 MMCBUS_RELEASE_BUS(mmcbr, dev); 937 if (cmd.error != MMC_ERR_NONE) { 938 switch (cmd.error) { 939 case MMC_ERR_TIMEOUT: 940 err = ETIMEDOUT; 941 break; 942 case MMC_ERR_BADCRC: 943 err = EILSEQ; 944 break; 945 case MMC_ERR_INVALID: 946 err = EINVAL; 947 break; 948 case MMC_ERR_NO_MEMORY: 949 err = ENOMEM; 950 break; 951 default: 952 err = EIO; 953 break; 954 } 955 goto out; 956 } 957 memcpy(mic->response, cmd.resp, 4 * sizeof(uint32_t)); 958 if (mic->write_flag == 0 && len != 0) { 959 err = copyout(dp, (void *)(uintptr_t)mic->data_ptr, len); 960 if (err != 0) 961 goto out; 962 } 963 goto out; 964 965 release: 966 MMCBUS_RELEASE_BUS(mmcbr, dev); 967 err = EIO; 968 969 out: 970 MMCSD_IOCTL_LOCK(part); 971 part->ioctl = 0; 972 MMCSD_IOCTL_UNLOCK(part); 973 wakeup(part); 974 if (dp != NULL) 975 free(dp, M_TEMP); 976 return (err); 977 } 978 979 static int 980 mmcsd_getattr(struct bio *bp) 981 { 982 struct mmcsd_part *part; 983 device_t dev; 984 985 if (strcmp(bp->bio_attribute, "MMC::device") == 0) { 986 if (bp->bio_length != sizeof(dev)) 987 return (EFAULT); 988 part = bp->bio_disk->d_drv1; 989 dev = part->sc->dev; 990 bcopy(&dev, bp->bio_data, sizeof(dev)); 991 bp->bio_completed = bp->bio_length; 992 return (0); 993 } 994 return (-1); 995 } 996 997 static int 998 mmcsd_set_blockcount(struct mmcsd_softc *sc, u_int count, bool reliable) 999 { 1000 struct mmc_command cmd; 1001 struct mmc_request req; 1002 1003 memset(&req, 0, sizeof(req)); 1004 memset(&cmd, 0, sizeof(cmd)); 1005 cmd.mrq = &req; 1006 req.cmd = &cmd; 1007 cmd.opcode = MMC_SET_BLOCK_COUNT; 1008 cmd.arg = count & 0x0000FFFF; 1009 if (reliable) 1010 cmd.arg |= 1 << 31; 1011 cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; 1012 MMCBUS_WAIT_FOR_REQUEST(sc->mmcbr, sc->dev, &req); 1013 return (cmd.error); 1014 } 1015 1016 static int 1017 mmcsd_switch_part(device_t bus, device_t dev, uint16_t rca, u_int part) 1018 { 1019 struct mmcsd_softc *sc; 1020 int err; 1021 uint8_t value; 1022 1023 sc = device_get_softc(dev); 1024 1025 if (sc->mode == mode_sd) 1026 return (MMC_ERR_NONE); 1027 1028 /* 1029 * According to section "6.2.2 Command restrictions" of the eMMC 1030 * specification v5.1, CMD19/CMD21 aren't allowed to be used with 1031 * RPMB partitions. So we pause re-tuning along with triggering 1032 * it up-front to decrease the likelihood of re-tuning becoming 1033 * necessary while accessing an RPMB partition. Consequently, an 1034 * RPMB partition should immediately be switched away from again 1035 * after an access in order to allow for re-tuning to take place 1036 * anew. 1037 */ 1038 if (part == EXT_CSD_PART_CONFIG_ACC_RPMB) 1039 MMCBUS_RETUNE_PAUSE(sc->mmcbr, sc->dev, true); 1040 1041 if (sc->part_curr == part) 1042 return (MMC_ERR_NONE); 1043 1044 value = (sc->ext_csd[EXT_CSD_PART_CONFIG] & 1045 ~EXT_CSD_PART_CONFIG_ACC_MASK) | part; 1046 /* Jump! */ 1047 err = mmc_switch(bus, dev, rca, EXT_CSD_CMD_SET_NORMAL, 1048 EXT_CSD_PART_CONFIG, value, sc->part_time, true); 1049 if (err != MMC_ERR_NONE) { 1050 if (part == EXT_CSD_PART_CONFIG_ACC_RPMB) 1051 MMCBUS_RETUNE_UNPAUSE(sc->mmcbr, sc->dev); 1052 return (err); 1053 } 1054 1055 sc->ext_csd[EXT_CSD_PART_CONFIG] = value; 1056 if (sc->part_curr == EXT_CSD_PART_CONFIG_ACC_RPMB) 1057 MMCBUS_RETUNE_UNPAUSE(sc->mmcbr, sc->dev); 1058 sc->part_curr = part; 1059 return (MMC_ERR_NONE); 1060 } 1061 1062 static const char * 1063 mmcsd_errmsg(int e) 1064 { 1065 1066 if (e < 0 || e > MMC_ERR_MAX) 1067 return "Bad error code"; 1068 return (errmsg[e]); 1069 } 1070 1071 static daddr_t 1072 mmcsd_rw(struct mmcsd_part *part, struct bio *bp) 1073 { 1074 daddr_t block, end; 1075 struct mmc_command cmd; 1076 struct mmc_command stop; 1077 struct mmc_request req; 1078 struct mmc_data data; 1079 struct mmcsd_softc *sc; 1080 device_t dev, mmcbr; 1081 u_int numblocks, sz; 1082 char *vaddr; 1083 1084 sc = part->sc; 1085 dev = sc->dev; 1086 mmcbr = sc->mmcbr; 1087 1088 block = bp->bio_pblkno; 1089 sz = part->disk->d_sectorsize; 1090 end = bp->bio_pblkno + (bp->bio_bcount / sz); 1091 while (block < end) { 1092 vaddr = bp->bio_data + (block - bp->bio_pblkno) * sz; 1093 numblocks = min(end - block, sc->max_data); 1094 memset(&req, 0, sizeof(req)); 1095 memset(&cmd, 0, sizeof(cmd)); 1096 memset(&stop, 0, sizeof(stop)); 1097 memset(&data, 0, sizeof(data)); 1098 cmd.mrq = &req; 1099 req.cmd = &cmd; 1100 cmd.data = &data; 1101 if (bp->bio_cmd == BIO_READ) { 1102 if (numblocks > 1) 1103 cmd.opcode = MMC_READ_MULTIPLE_BLOCK; 1104 else 1105 cmd.opcode = MMC_READ_SINGLE_BLOCK; 1106 } else { 1107 if (numblocks > 1) 1108 cmd.opcode = MMC_WRITE_MULTIPLE_BLOCK; 1109 else 1110 cmd.opcode = MMC_WRITE_BLOCK; 1111 } 1112 cmd.arg = block; 1113 if (sc->high_cap == 0) 1114 cmd.arg <<= 9; 1115 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC; 1116 data.data = vaddr; 1117 data.mrq = &req; 1118 if (bp->bio_cmd == BIO_READ) 1119 data.flags = MMC_DATA_READ; 1120 else 1121 data.flags = MMC_DATA_WRITE; 1122 data.len = numblocks * sz; 1123 if (numblocks > 1) { 1124 data.flags |= MMC_DATA_MULTI; 1125 stop.opcode = MMC_STOP_TRANSMISSION; 1126 stop.arg = 0; 1127 stop.flags = MMC_RSP_R1B | MMC_CMD_AC; 1128 stop.mrq = &req; 1129 req.stop = &stop; 1130 } 1131 MMCBUS_WAIT_FOR_REQUEST(mmcbr, dev, &req); 1132 if (req.cmd->error != MMC_ERR_NONE) { 1133 if (ppsratecheck(&sc->log_time, &sc->log_count, 1134 LOG_PPS)) 1135 device_printf(dev, "Error indicated: %d %s\n", 1136 req.cmd->error, 1137 mmcsd_errmsg(req.cmd->error)); 1138 break; 1139 } 1140 block += numblocks; 1141 } 1142 return (block); 1143 } 1144 1145 static daddr_t 1146 mmcsd_delete(struct mmcsd_part *part, struct bio *bp) 1147 { 1148 daddr_t block, end, start, stop; 1149 struct mmc_command cmd; 1150 struct mmc_request req; 1151 struct mmcsd_softc *sc; 1152 device_t dev, mmcbr; 1153 u_int erase_sector, sz; 1154 1155 sc = part->sc; 1156 dev = sc->dev; 1157 mmcbr = sc->mmcbr; 1158 1159 block = bp->bio_pblkno; 1160 sz = part->disk->d_sectorsize; 1161 end = bp->bio_pblkno + (bp->bio_bcount / sz); 1162 /* Coalesce with part remaining from previous request. */ 1163 if (block > part->eblock && block <= part->eend) 1164 block = part->eblock; 1165 if (end >= part->eblock && end < part->eend) 1166 end = part->eend; 1167 /* Safe round to the erase sector boundaries. */ 1168 erase_sector = sc->erase_sector; 1169 start = block + erase_sector - 1; /* Round up. */ 1170 start -= start % erase_sector; 1171 stop = end; /* Round down. */ 1172 stop -= end % erase_sector; 1173 /* We can't erase an area smaller than a sector, store it for later. */ 1174 if (start >= stop) { 1175 part->eblock = block; 1176 part->eend = end; 1177 return (end); 1178 } 1179 1180 /* 1181 * Pause re-tuning so it won't interfere with the order of erase 1182 * commands. Note that these latter don't use the data lines, so 1183 * re-tuning shouldn't actually become necessary during erase. 1184 */ 1185 MMCBUS_RETUNE_PAUSE(mmcbr, dev, false); 1186 /* Set erase start position. */ 1187 memset(&req, 0, sizeof(req)); 1188 memset(&cmd, 0, sizeof(cmd)); 1189 cmd.mrq = &req; 1190 req.cmd = &cmd; 1191 if (mmc_get_card_type(dev) == mode_sd) 1192 cmd.opcode = SD_ERASE_WR_BLK_START; 1193 else 1194 cmd.opcode = MMC_ERASE_GROUP_START; 1195 cmd.arg = start; 1196 if (sc->high_cap == 0) 1197 cmd.arg <<= 9; 1198 cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; 1199 MMCBUS_WAIT_FOR_REQUEST(mmcbr, dev, &req); 1200 if (req.cmd->error != MMC_ERR_NONE) { 1201 device_printf(dev, "Setting erase start position failed %d\n", 1202 req.cmd->error); 1203 block = bp->bio_pblkno; 1204 goto unpause; 1205 } 1206 /* Set erase stop position. */ 1207 memset(&req, 0, sizeof(req)); 1208 memset(&cmd, 0, sizeof(cmd)); 1209 req.cmd = &cmd; 1210 if (mmc_get_card_type(dev) == mode_sd) 1211 cmd.opcode = SD_ERASE_WR_BLK_END; 1212 else 1213 cmd.opcode = MMC_ERASE_GROUP_END; 1214 cmd.arg = stop; 1215 if (sc->high_cap == 0) 1216 cmd.arg <<= 9; 1217 cmd.arg--; 1218 cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; 1219 MMCBUS_WAIT_FOR_REQUEST(mmcbr, dev, &req); 1220 if (req.cmd->error != MMC_ERR_NONE) { 1221 device_printf(dev, "Setting erase stop position failed %d\n", 1222 req.cmd->error); 1223 block = bp->bio_pblkno; 1224 goto unpause; 1225 } 1226 /* Erase range. */ 1227 memset(&req, 0, sizeof(req)); 1228 memset(&cmd, 0, sizeof(cmd)); 1229 req.cmd = &cmd; 1230 cmd.opcode = MMC_ERASE; 1231 cmd.arg = 0; 1232 cmd.flags = MMC_RSP_R1B | MMC_CMD_AC; 1233 MMCBUS_WAIT_FOR_REQUEST(mmcbr, dev, &req); 1234 if (req.cmd->error != MMC_ERR_NONE) { 1235 device_printf(dev, "erase err3: %d\n", req.cmd->error); 1236 device_printf(dev, "Issuing erase command failed %d\n", 1237 req.cmd->error); 1238 block = bp->bio_pblkno; 1239 goto unpause; 1240 } 1241 /* Store one of remaining parts for the next call. */ 1242 if (bp->bio_pblkno >= part->eblock || block == start) { 1243 part->eblock = stop; /* Predict next forward. */ 1244 part->eend = end; 1245 } else { 1246 part->eblock = block; /* Predict next backward. */ 1247 part->eend = start; 1248 } 1249 block = end; 1250 unpause: 1251 MMCBUS_RETUNE_UNPAUSE(mmcbr, dev); 1252 return (block); 1253 } 1254 1255 static int 1256 mmcsd_dump(void *arg, void *virtual, vm_offset_t physical, off_t offset, 1257 size_t length) 1258 { 1259 struct bio bp; 1260 daddr_t block, end; 1261 struct disk *disk; 1262 struct mmcsd_softc *sc; 1263 struct mmcsd_part *part; 1264 device_t dev, mmcbr; 1265 int err; 1266 1267 /* length zero is special and really means flush buffers to media */ 1268 if (!length) 1269 return (0); 1270 1271 disk = arg; 1272 part = disk->d_drv1; 1273 sc = part->sc; 1274 dev = sc->dev; 1275 mmcbr = sc->mmcbr; 1276 1277 g_reset_bio(&bp); 1278 bp.bio_disk = disk; 1279 bp.bio_pblkno = offset / disk->d_sectorsize; 1280 bp.bio_bcount = length; 1281 bp.bio_data = virtual; 1282 bp.bio_cmd = BIO_WRITE; 1283 end = bp.bio_pblkno + bp.bio_bcount / disk->d_sectorsize; 1284 MMCBUS_ACQUIRE_BUS(mmcbr, dev); 1285 err = mmcsd_switch_part(mmcbr, dev, sc->rca, part->type); 1286 if (err != MMC_ERR_NONE) { 1287 if (ppsratecheck(&sc->log_time, &sc->log_count, LOG_PPS)) 1288 device_printf(dev, "Partition switch error\n"); 1289 MMCBUS_RELEASE_BUS(mmcbr, dev); 1290 return (EIO); 1291 } 1292 block = mmcsd_rw(part, &bp); 1293 MMCBUS_RELEASE_BUS(mmcbr, dev); 1294 return ((end < block) ? EIO : 0); 1295 } 1296 1297 static void 1298 mmcsd_task(void *arg) 1299 { 1300 daddr_t block, end; 1301 struct mmcsd_part *part; 1302 struct mmcsd_softc *sc; 1303 struct bio *bp; 1304 device_t dev, mmcbr; 1305 int err, sz; 1306 1307 part = arg; 1308 sc = part->sc; 1309 dev = sc->dev; 1310 mmcbr = sc->mmcbr; 1311 1312 while (1) { 1313 MMCSD_DISK_LOCK(part); 1314 do { 1315 if (part->running == 0) 1316 goto out; 1317 bp = bioq_takefirst(&part->bio_queue); 1318 if (bp == NULL) 1319 msleep(part, &part->disk_mtx, PRIBIO, 1320 "mmcsd disk jobqueue", 0); 1321 } while (bp == NULL); 1322 MMCSD_DISK_UNLOCK(part); 1323 if (bp->bio_cmd != BIO_READ && part->ro) { 1324 bp->bio_error = EROFS; 1325 bp->bio_resid = bp->bio_bcount; 1326 bp->bio_flags |= BIO_ERROR; 1327 biodone(bp); 1328 continue; 1329 } 1330 MMCBUS_ACQUIRE_BUS(mmcbr, dev); 1331 sz = part->disk->d_sectorsize; 1332 block = bp->bio_pblkno; 1333 end = bp->bio_pblkno + (bp->bio_bcount / sz); 1334 err = mmcsd_switch_part(mmcbr, dev, sc->rca, part->type); 1335 if (err != MMC_ERR_NONE) { 1336 if (ppsratecheck(&sc->log_time, &sc->log_count, 1337 LOG_PPS)) 1338 device_printf(dev, "Partition switch error\n"); 1339 goto release; 1340 } 1341 if (bp->bio_cmd == BIO_READ || bp->bio_cmd == BIO_WRITE) { 1342 /* Access to the remaining erase block obsoletes it. */ 1343 if (block < part->eend && end > part->eblock) 1344 part->eblock = part->eend = 0; 1345 block = mmcsd_rw(part, bp); 1346 } else if (bp->bio_cmd == BIO_DELETE) { 1347 block = mmcsd_delete(part, bp); 1348 } 1349 release: 1350 MMCBUS_RELEASE_BUS(mmcbr, dev); 1351 if (block < end) { 1352 bp->bio_error = EIO; 1353 bp->bio_resid = (end - block) * sz; 1354 bp->bio_flags |= BIO_ERROR; 1355 } else { 1356 bp->bio_resid = 0; 1357 } 1358 biodone(bp); 1359 } 1360 out: 1361 /* tell parent we're done */ 1362 part->running = -1; 1363 MMCSD_DISK_UNLOCK(part); 1364 wakeup(part); 1365 1366 kproc_exit(0); 1367 } 1368 1369 static int 1370 mmcsd_bus_bit_width(device_t dev) 1371 { 1372 1373 if (mmc_get_bus_width(dev) == bus_width_1) 1374 return (1); 1375 if (mmc_get_bus_width(dev) == bus_width_4) 1376 return (4); 1377 return (8); 1378 } 1379 1380 static device_method_t mmcsd_methods[] = { 1381 DEVMETHOD(device_probe, mmcsd_probe), 1382 DEVMETHOD(device_attach, mmcsd_attach), 1383 DEVMETHOD(device_detach, mmcsd_detach), 1384 DEVMETHOD(device_suspend, mmcsd_suspend), 1385 DEVMETHOD(device_resume, mmcsd_resume), 1386 DEVMETHOD_END 1387 }; 1388 1389 static driver_t mmcsd_driver = { 1390 "mmcsd", 1391 mmcsd_methods, 1392 sizeof(struct mmcsd_softc), 1393 }; 1394 static devclass_t mmcsd_devclass; 1395 1396 static int 1397 mmcsd_handler(module_t mod __unused, int what, void *arg __unused) 1398 { 1399 1400 switch (what) { 1401 case MOD_LOAD: 1402 flash_register_slicer(mmcsd_slicer, FLASH_SLICES_TYPE_MMC, 1403 TRUE); 1404 return (0); 1405 case MOD_UNLOAD: 1406 flash_register_slicer(NULL, FLASH_SLICES_TYPE_MMC, TRUE); 1407 return (0); 1408 } 1409 return (0); 1410 } 1411 1412 DRIVER_MODULE(mmcsd, mmc, mmcsd_driver, mmcsd_devclass, mmcsd_handler, NULL); 1413 MODULE_DEPEND(mmcsd, g_flashmap, 0, 0, 0); 1414 MMC_DEPEND(mmcsd); 1415