mmcsd.c revision 333768
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: stable/11/sys/dev/mmc/mmcsd.c 333768 2018-05-17 21:23:14Z marius $"); 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/priv.h> 71#include <sys/slicer.h> 72#include <sys/time.h> 73 74#include <geom/geom.h> 75#include <geom/geom_disk.h> 76 77#include <dev/mmc/bridge.h> 78#include <dev/mmc/mmc_ioctl.h> 79#include <dev/mmc/mmc_subr.h> 80#include <dev/mmc/mmcbrvar.h> 81#include <dev/mmc/mmcreg.h> 82#include <dev/mmc/mmcvar.h> 83 84#include "mmcbus_if.h" 85 86#if __FreeBSD_version < 800002 87#define kproc_create kthread_create 88#define kproc_exit kthread_exit 89#endif 90 91#define MMCSD_CMD_RETRIES 5 92 93#define MMCSD_FMT_BOOT "mmcsd%dboot" 94#define MMCSD_FMT_GP "mmcsd%dgp" 95#define MMCSD_FMT_RPMB "mmcsd%drpmb" 96#define MMCSD_LABEL_ENH "enh" 97 98#define MMCSD_PART_NAMELEN (16 + 1) 99 100struct mmcsd_softc; 101 102struct mmcsd_part { 103 struct mtx disk_mtx; 104 struct mtx ioctl_mtx; 105 struct mmcsd_softc *sc; 106 struct disk *disk; 107 struct proc *p; 108 struct bio_queue_head bio_queue; 109 daddr_t eblock, eend; /* Range remaining after the last erase. */ 110 u_int cnt; 111 u_int type; 112 int running; 113 int suspend; 114 int ioctl; 115 bool ro; 116 char name[MMCSD_PART_NAMELEN]; 117}; 118 119struct mmcsd_softc { 120 device_t dev; 121 device_t mmcbus; 122 struct mmcsd_part *part[MMC_PART_MAX]; 123 enum mmc_card_mode mode; 124 u_int max_data; /* Maximum data size [blocks] */ 125 u_int erase_sector; /* Device native erase sector size [blocks] */ 126 uint8_t high_cap; /* High Capacity device (block addressed) */ 127 uint8_t part_curr; /* Partition currently switched to */ 128 uint8_t ext_csd[MMC_EXTCSD_SIZE]; 129 uint16_t rca; 130 uint32_t flags; 131#define MMCSD_INAND_CMD38 0x0001 132#define MMCSD_USE_TRIM 0x0002 133 uint32_t cmd6_time; /* Generic switch timeout [us] */ 134 uint32_t part_time; /* Partition switch timeout [us] */ 135 off_t enh_base; /* Enhanced user data area slice base ... */ 136 off_t enh_size; /* ... and size [bytes] */ 137 int log_count; 138 struct timeval log_time; 139 struct cdev *rpmb_dev; 140}; 141 142static const char *errmsg[] = 143{ 144 "None", 145 "Timeout", 146 "Bad CRC", 147 "Fifo", 148 "Failed", 149 "Invalid", 150 "NO MEMORY" 151}; 152 153#define LOG_PPS 5 /* Log no more than 5 errors per second. */ 154 155/* bus entry points */ 156static int mmcsd_attach(device_t dev); 157static int mmcsd_detach(device_t dev); 158static int mmcsd_probe(device_t dev); 159 160/* disk routines */ 161static int mmcsd_close(struct disk *dp); 162static int mmcsd_dump(void *arg, void *virtual, vm_offset_t physical, 163 off_t offset, size_t length); 164static int mmcsd_getattr(struct bio *); 165static int mmcsd_ioctl_disk(struct disk *disk, u_long cmd, void *data, 166 int fflag, struct thread *td); 167static int mmcsd_open(struct disk *dp); 168static void mmcsd_strategy(struct bio *bp); 169static void mmcsd_task(void *arg); 170 171/* RMPB cdev interface */ 172static int mmcsd_ioctl_rpmb(struct cdev *dev, u_long cmd, caddr_t data, 173 int fflag, struct thread *td); 174 175static void mmcsd_add_part(struct mmcsd_softc *sc, u_int type, 176 const char *name, u_int cnt, off_t media_size, bool ro); 177static int mmcsd_bus_bit_width(device_t dev); 178static daddr_t mmcsd_delete(struct mmcsd_part *part, struct bio *bp); 179static const char *mmcsd_errmsg(int e); 180static int mmcsd_ioctl(struct mmcsd_part *part, u_long cmd, void *data, 181 int fflag, struct thread *td); 182static int mmcsd_ioctl_cmd(struct mmcsd_part *part, struct mmc_ioc_cmd *mic, 183 int fflag); 184static uintmax_t mmcsd_pretty_size(off_t size, char *unit); 185static daddr_t mmcsd_rw(struct mmcsd_part *part, struct bio *bp); 186static int mmcsd_set_blockcount(struct mmcsd_softc *sc, u_int count, bool rel); 187static int mmcsd_slicer(device_t dev, const char *provider, 188 struct flash_slice *slices, int *nslices); 189static int mmcsd_switch_part(device_t bus, device_t dev, uint16_t rca, 190 u_int part); 191 192#define MMCSD_DISK_LOCK(_part) mtx_lock(&(_part)->disk_mtx) 193#define MMCSD_DISK_UNLOCK(_part) mtx_unlock(&(_part)->disk_mtx) 194#define MMCSD_DISK_LOCK_INIT(_part) \ 195 mtx_init(&(_part)->disk_mtx, (_part)->name, "mmcsd disk", MTX_DEF) 196#define MMCSD_DISK_LOCK_DESTROY(_part) mtx_destroy(&(_part)->disk_mtx); 197#define MMCSD_DISK_ASSERT_LOCKED(_part) \ 198 mtx_assert(&(_part)->disk_mtx, MA_OWNED); 199#define MMCSD_DISK_ASSERT_UNLOCKED(_part) \ 200 mtx_assert(&(_part)->disk_mtx, MA_NOTOWNED); 201 202#define MMCSD_IOCTL_LOCK(_part) mtx_lock(&(_part)->ioctl_mtx) 203#define MMCSD_IOCTL_UNLOCK(_part) mtx_unlock(&(_part)->ioctl_mtx) 204#define MMCSD_IOCTL_LOCK_INIT(_part) \ 205 mtx_init(&(_part)->ioctl_mtx, (_part)->name, "mmcsd IOCTL", MTX_DEF) 206#define MMCSD_IOCTL_LOCK_DESTROY(_part) mtx_destroy(&(_part)->ioctl_mtx); 207#define MMCSD_IOCTL_ASSERT_LOCKED(_part) \ 208 mtx_assert(&(_part)->ioctl_mtx, MA_OWNED); 209#define MMCSD_IOCLT_ASSERT_UNLOCKED(_part) \ 210 mtx_assert(&(_part)->ioctl_mtx, MA_NOTOWNED); 211 212static int 213mmcsd_probe(device_t dev) 214{ 215 216 device_quiet(dev); 217 device_set_desc(dev, "MMC/SD Memory Card"); 218 return (0); 219} 220 221static int 222mmcsd_attach(device_t dev) 223{ 224 device_t mmcbus; 225 struct mmcsd_softc *sc; 226 const uint8_t *ext_csd; 227 off_t erase_size, sector_size, size, wp_size; 228 uintmax_t bytes; 229 int err, i; 230 uint32_t quirks; 231 uint8_t rev; 232 bool comp, ro; 233 char unit[2]; 234 235 sc = device_get_softc(dev); 236 sc->dev = dev; 237 sc->mmcbus = mmcbus = device_get_parent(dev); 238 sc->mode = mmcbr_get_mode(mmcbus); 239 /* 240 * Note that in principle with an SDHCI-like re-tuning implementation, 241 * the maximum data size can change at runtime due to a device removal/ 242 * insertion that results in switches to/from a transfer mode involving 243 * re-tuning, iff there are multiple devices on a given bus. Until now 244 * mmc(4) lacks support for rescanning already attached buses, however, 245 * and sdhci(4) to date has no support for shared buses in the first 246 * place either. 247 */ 248 sc->max_data = mmc_get_max_data(dev); 249 sc->high_cap = mmc_get_high_cap(dev); 250 sc->rca = mmc_get_rca(dev); 251 sc->cmd6_time = mmc_get_cmd6_timeout(dev); 252 quirks = mmc_get_quirks(dev); 253 254 /* Only MMC >= 4.x devices support EXT_CSD. */ 255 if (mmc_get_spec_vers(dev) >= 4) { 256 MMCBUS_ACQUIRE_BUS(mmcbus, dev); 257 err = mmc_send_ext_csd(mmcbus, dev, sc->ext_csd); 258 MMCBUS_RELEASE_BUS(mmcbus, dev); 259 if (err != MMC_ERR_NONE) { 260 device_printf(dev, "Error reading EXT_CSD %s\n", 261 mmcsd_errmsg(err)); 262 return (ENXIO); 263 } 264 } 265 ext_csd = sc->ext_csd; 266 267 if ((quirks & MMC_QUIRK_INAND_CMD38) != 0) { 268 if (mmc_get_spec_vers(dev) < 4) { 269 device_printf(dev, 270 "MMC_QUIRK_INAND_CMD38 set but no EXT_CSD\n"); 271 return (EINVAL); 272 } 273 sc->flags |= MMCSD_INAND_CMD38; 274 } 275 276 /* 277 * EXT_CSD_SEC_FEATURE_SUPPORT_GB_CL_EN denotes support for both 278 * insecure and secure TRIM. 279 */ 280 if ((ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT] & 281 EXT_CSD_SEC_FEATURE_SUPPORT_GB_CL_EN) != 0 && 282 (quirks & MMC_QUIRK_BROKEN_TRIM) == 0) { 283 if (bootverbose) 284 device_printf(dev, "taking advantage of TRIM\n"); 285 sc->flags |= MMCSD_USE_TRIM; 286 sc->erase_sector = 1; 287 } else 288 sc->erase_sector = mmc_get_erase_sector(dev); 289 290 /* 291 * Enhanced user data area and general purpose partitions are only 292 * supported in revision 1.4 (EXT_CSD_REV == 4) and later, the RPMB 293 * partition in revision 1.5 (MMC v4.41, EXT_CSD_REV == 5) and later. 294 */ 295 rev = ext_csd[EXT_CSD_REV]; 296 297 /* 298 * Ignore user-creatable enhanced user data area and general purpose 299 * partitions partitions as long as partitioning hasn't been finished. 300 */ 301 comp = (ext_csd[EXT_CSD_PART_SET] & EXT_CSD_PART_SET_COMPLETED) != 0; 302 303 /* 304 * Add enhanced user data area slice, unless it spans the entirety of 305 * the user data area. The enhanced area is of a multiple of high 306 * capacity write protect groups ((ERASE_GRP_SIZE + HC_WP_GRP_SIZE) * 307 * 512 KB) and its offset given in either sectors or bytes, depending 308 * on whether it's a high capacity device or not. 309 * NB: The slicer and its slices need to be registered before adding 310 * the disk for the corresponding user data area as re-tasting is 311 * racy. 312 */ 313 sector_size = mmc_get_sector_size(dev); 314 size = ext_csd[EXT_CSD_ENH_SIZE_MULT] + 315 (ext_csd[EXT_CSD_ENH_SIZE_MULT + 1] << 8) + 316 (ext_csd[EXT_CSD_ENH_SIZE_MULT + 2] << 16); 317 if (rev >= 4 && comp == TRUE && size > 0 && 318 (ext_csd[EXT_CSD_PART_SUPPORT] & 319 EXT_CSD_PART_SUPPORT_ENH_ATTR_EN) != 0 && 320 (ext_csd[EXT_CSD_PART_ATTR] & (EXT_CSD_PART_ATTR_ENH_USR)) != 0) { 321 erase_size = ext_csd[EXT_CSD_ERASE_GRP_SIZE] * 1024 * 322 MMC_SECTOR_SIZE; 323 wp_size = ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 324 size *= erase_size * wp_size; 325 if (size != mmc_get_media_size(dev) * sector_size) { 326 sc->enh_size = size; 327 sc->enh_base = (ext_csd[EXT_CSD_ENH_START_ADDR] + 328 (ext_csd[EXT_CSD_ENH_START_ADDR + 1] << 8) + 329 (ext_csd[EXT_CSD_ENH_START_ADDR + 2] << 16) + 330 (ext_csd[EXT_CSD_ENH_START_ADDR + 3] << 24)) * 331 (sc->high_cap != 0 ? MMC_SECTOR_SIZE : 1); 332 } else if (bootverbose) 333 device_printf(dev, 334 "enhanced user data area spans entire device\n"); 335 } 336 337 /* 338 * Add default partition. This may be the only one or the user 339 * data area in case partitions are supported. 340 */ 341 ro = mmc_get_read_only(dev); 342 mmcsd_add_part(sc, EXT_CSD_PART_CONFIG_ACC_DEFAULT, "mmcsd", 343 device_get_unit(dev), mmc_get_media_size(dev) * sector_size, ro); 344 345 if (mmc_get_spec_vers(dev) < 3) 346 return (0); 347 348 /* Belatedly announce enhanced user data slice. */ 349 if (sc->enh_size != 0) { 350 bytes = mmcsd_pretty_size(size, unit); 351 printf(FLASH_SLICES_FMT ": %ju%sB enhanced user data area " 352 "slice offset 0x%jx at %s\n", device_get_nameunit(dev), 353 MMCSD_LABEL_ENH, bytes, unit, (uintmax_t)sc->enh_base, 354 device_get_nameunit(dev)); 355 } 356 357 /* 358 * Determine partition switch timeout (provided in units of 10 ms) 359 * and ensure it's at least 300 ms as some eMMC chips lie. 360 */ 361 sc->part_time = max(ext_csd[EXT_CSD_PART_SWITCH_TO] * 10 * 1000, 362 300 * 1000); 363 364 /* Add boot partitions, which are of a fixed multiple of 128 KB. */ 365 size = ext_csd[EXT_CSD_BOOT_SIZE_MULT] * MMC_BOOT_RPMB_BLOCK_SIZE; 366 if (size > 0 && (mmcbr_get_caps(mmcbus) & MMC_CAP_BOOT_NOACC) == 0) { 367 mmcsd_add_part(sc, EXT_CSD_PART_CONFIG_ACC_BOOT0, 368 MMCSD_FMT_BOOT, 0, size, 369 ro | ((ext_csd[EXT_CSD_BOOT_WP_STATUS] & 370 EXT_CSD_BOOT_WP_STATUS_BOOT0_MASK) != 0)); 371 mmcsd_add_part(sc, EXT_CSD_PART_CONFIG_ACC_BOOT1, 372 MMCSD_FMT_BOOT, 1, size, 373 ro | ((ext_csd[EXT_CSD_BOOT_WP_STATUS] & 374 EXT_CSD_BOOT_WP_STATUS_BOOT1_MASK) != 0)); 375 } 376 377 /* Add RPMB partition, which also is of a fixed multiple of 128 KB. */ 378 size = ext_csd[EXT_CSD_RPMB_MULT] * MMC_BOOT_RPMB_BLOCK_SIZE; 379 if (rev >= 5 && size > 0) 380 mmcsd_add_part(sc, EXT_CSD_PART_CONFIG_ACC_RPMB, 381 MMCSD_FMT_RPMB, 0, size, ro); 382 383 if (rev <= 3 || comp == FALSE) 384 return (0); 385 386 /* 387 * Add general purpose partitions, which are of a multiple of high 388 * capacity write protect groups, too. 389 */ 390 if ((ext_csd[EXT_CSD_PART_SUPPORT] & EXT_CSD_PART_SUPPORT_EN) != 0) { 391 erase_size = ext_csd[EXT_CSD_ERASE_GRP_SIZE] * 1024 * 392 MMC_SECTOR_SIZE; 393 wp_size = ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 394 for (i = 0; i < MMC_PART_GP_MAX; i++) { 395 size = ext_csd[EXT_CSD_GP_SIZE_MULT + i * 3] + 396 (ext_csd[EXT_CSD_GP_SIZE_MULT + i * 3 + 1] << 8) + 397 (ext_csd[EXT_CSD_GP_SIZE_MULT + i * 3 + 2] << 16); 398 if (size == 0) 399 continue; 400 mmcsd_add_part(sc, EXT_CSD_PART_CONFIG_ACC_GP0 + i, 401 MMCSD_FMT_GP, i, size * erase_size * wp_size, ro); 402 } 403 } 404 return (0); 405} 406 407static uintmax_t 408mmcsd_pretty_size(off_t size, char *unit) 409{ 410 uintmax_t bytes; 411 int i; 412 413 /* 414 * Display in most natural units. There's no card < 1MB. However, 415 * RPMB partitions occasionally are smaller than that, though. The 416 * SD standard goes to 2 GiB due to its reliance on FAT, but the data 417 * format supports up to 4 GiB and some card makers push it up to this 418 * limit. The SDHC standard only goes to 32 GiB due to FAT32, but the 419 * data format supports up to 2 TiB however. 2048 GB isn't too ugly, 420 * so we note it in passing here and don't add the code to print TB). 421 * Since these cards are sold in terms of MB and GB not MiB and GiB, 422 * report them like that. We also round to the nearest unit, since 423 * many cards are a few percent short, even of the power of 10 size. 424 */ 425 bytes = size; 426 unit[0] = unit[1] = '\0'; 427 for (i = 0; i <= 2 && bytes >= 1000; i++) { 428 bytes = (bytes + 1000 / 2 - 1) / 1000; 429 switch (i) { 430 case 0: 431 unit[0] = 'k'; 432 break; 433 case 1: 434 unit[0] = 'M'; 435 break; 436 case 2: 437 unit[0] = 'G'; 438 break; 439 default: 440 break; 441 } 442 } 443 return (bytes); 444} 445 446static struct cdevsw mmcsd_rpmb_cdevsw = { 447 .d_version = D_VERSION, 448 .d_name = "mmcsdrpmb", 449 .d_ioctl = mmcsd_ioctl_rpmb 450}; 451 452static void 453mmcsd_add_part(struct mmcsd_softc *sc, u_int type, const char *name, u_int cnt, 454 off_t media_size, bool ro) 455{ 456 struct make_dev_args args; 457 device_t dev, mmcbus; 458 const char *ext; 459 const uint8_t *ext_csd; 460 struct mmcsd_part *part; 461 struct disk *d; 462 uintmax_t bytes; 463 u_int gp; 464 uint32_t speed; 465 uint8_t extattr; 466 bool enh; 467 char unit[2]; 468 469 dev = sc->dev; 470 mmcbus = sc->mmcbus; 471 part = sc->part[type] = malloc(sizeof(*part), M_DEVBUF, 472 M_WAITOK | M_ZERO); 473 part->sc = sc; 474 part->cnt = cnt; 475 part->type = type; 476 part->ro = ro; 477 snprintf(part->name, sizeof(part->name), name, device_get_unit(dev)); 478 479 MMCSD_IOCTL_LOCK_INIT(part); 480 481 /* 482 * For the RPMB partition, allow IOCTL access only. 483 * NB: If ever attaching RPMB partitions to disk(9), the re-tuning 484 * implementation and especially its pausing need to be revisited, 485 * because then re-tuning requests may be issued by the IOCTL half 486 * of this driver while re-tuning is already paused by the disk(9) 487 * one and vice versa. 488 */ 489 if (type == EXT_CSD_PART_CONFIG_ACC_RPMB) { 490 make_dev_args_init(&args); 491 args.mda_flags = MAKEDEV_CHECKNAME | MAKEDEV_WAITOK; 492 args.mda_devsw = &mmcsd_rpmb_cdevsw; 493 args.mda_uid = UID_ROOT; 494 args.mda_gid = GID_OPERATOR; 495 args.mda_mode = 0640; 496 args.mda_si_drv1 = part; 497 if (make_dev_s(&args, &sc->rpmb_dev, "%s", part->name) != 0) { 498 device_printf(dev, "Failed to make RPMB device\n"); 499 free(part, M_DEVBUF); 500 return; 501 } 502 } else { 503 MMCSD_DISK_LOCK_INIT(part); 504 505 d = part->disk = disk_alloc(); 506 d->d_open = mmcsd_open; 507 d->d_close = mmcsd_close; 508 d->d_strategy = mmcsd_strategy; 509 d->d_ioctl = mmcsd_ioctl_disk; 510 d->d_dump = mmcsd_dump; 511 d->d_getattr = mmcsd_getattr; 512 d->d_name = part->name; 513 d->d_drv1 = part; 514 d->d_sectorsize = mmc_get_sector_size(dev); 515 d->d_maxsize = sc->max_data * d->d_sectorsize; 516 d->d_mediasize = media_size; 517 d->d_stripesize = sc->erase_sector * d->d_sectorsize; 518 d->d_unit = cnt; 519 d->d_flags = DISKFLAG_CANDELETE; 520 d->d_delmaxsize = mmc_get_erase_sector(dev) * d->d_sectorsize; 521 strlcpy(d->d_ident, mmc_get_card_sn_string(dev), 522 sizeof(d->d_ident)); 523 strlcpy(d->d_descr, mmc_get_card_id_string(dev), 524 sizeof(d->d_descr)); 525 d->d_rotation_rate = DISK_RR_NON_ROTATING; 526 527 disk_create(d, DISK_VERSION); 528 bioq_init(&part->bio_queue); 529 530 part->running = 1; 531 kproc_create(&mmcsd_task, part, &part->p, 0, 0, 532 "%s%d: mmc/sd card", part->name, cnt); 533 } 534 535 bytes = mmcsd_pretty_size(media_size, unit); 536 if (type == EXT_CSD_PART_CONFIG_ACC_DEFAULT) { 537 speed = mmcbr_get_clock(mmcbus); 538 printf("%s%d: %ju%sB <%s>%s at %s %d.%01dMHz/%dbit/%d-block\n", 539 part->name, cnt, bytes, unit, mmc_get_card_id_string(dev), 540 ro ? " (read-only)" : "", device_get_nameunit(mmcbus), 541 speed / 1000000, (speed / 100000) % 10, 542 mmcsd_bus_bit_width(dev), sc->max_data); 543 } else if (type == EXT_CSD_PART_CONFIG_ACC_RPMB) { 544 printf("%s: %ju%sB partion %d%s at %s\n", part->name, bytes, 545 unit, type, ro ? " (read-only)" : "", 546 device_get_nameunit(dev)); 547 } else { 548 enh = false; 549 ext = NULL; 550 extattr = 0; 551 if (type >= EXT_CSD_PART_CONFIG_ACC_GP0 && 552 type <= EXT_CSD_PART_CONFIG_ACC_GP3) { 553 ext_csd = sc->ext_csd; 554 gp = type - EXT_CSD_PART_CONFIG_ACC_GP0; 555 if ((ext_csd[EXT_CSD_PART_SUPPORT] & 556 EXT_CSD_PART_SUPPORT_ENH_ATTR_EN) != 0 && 557 (ext_csd[EXT_CSD_PART_ATTR] & 558 (EXT_CSD_PART_ATTR_ENH_GP0 << gp)) != 0) 559 enh = true; 560 else if ((ext_csd[EXT_CSD_PART_SUPPORT] & 561 EXT_CSD_PART_SUPPORT_EXT_ATTR_EN) != 0) { 562 extattr = (ext_csd[EXT_CSD_EXT_PART_ATTR + 563 (gp / 2)] >> (4 * (gp % 2))) & 0xF; 564 switch (extattr) { 565 case EXT_CSD_EXT_PART_ATTR_DEFAULT: 566 break; 567 case EXT_CSD_EXT_PART_ATTR_SYSTEMCODE: 568 ext = "system code"; 569 break; 570 case EXT_CSD_EXT_PART_ATTR_NPERSISTENT: 571 ext = "non-persistent"; 572 break; 573 default: 574 ext = "reserved"; 575 break; 576 } 577 } 578 } 579 if (ext == NULL) 580 printf("%s%d: %ju%sB partion %d%s%s at %s\n", 581 part->name, cnt, bytes, unit, type, enh ? 582 " enhanced" : "", ro ? " (read-only)" : "", 583 device_get_nameunit(dev)); 584 else 585 printf("%s%d: %ju%sB partion %d extended 0x%x " 586 "(%s)%s at %s\n", part->name, cnt, bytes, unit, 587 type, extattr, ext, ro ? " (read-only)" : "", 588 device_get_nameunit(dev)); 589 } 590} 591 592static int 593mmcsd_slicer(device_t dev, const char *provider, 594 struct flash_slice *slices, int *nslices) 595{ 596 char name[MMCSD_PART_NAMELEN]; 597 struct mmcsd_softc *sc; 598 struct mmcsd_part *part; 599 600 *nslices = 0; 601 if (slices == NULL) 602 return (ENOMEM); 603 604 sc = device_get_softc(dev); 605 if (sc->enh_size == 0) 606 return (ENXIO); 607 608 part = sc->part[EXT_CSD_PART_CONFIG_ACC_DEFAULT]; 609 snprintf(name, sizeof(name), "%s%d", part->disk->d_name, 610 part->disk->d_unit); 611 if (strcmp(name, provider) != 0) 612 return (ENXIO); 613 614 *nslices = 1; 615 slices[0].base = sc->enh_base; 616 slices[0].size = sc->enh_size; 617 slices[0].label = MMCSD_LABEL_ENH; 618 return (0); 619} 620 621static int 622mmcsd_detach(device_t dev) 623{ 624 struct mmcsd_softc *sc = device_get_softc(dev); 625 struct mmcsd_part *part; 626 int i; 627 628 for (i = 0; i < MMC_PART_MAX; i++) { 629 part = sc->part[i]; 630 if (part != NULL) { 631 if (part->disk != NULL) { 632 MMCSD_DISK_LOCK(part); 633 part->suspend = 0; 634 if (part->running > 0) { 635 /* kill thread */ 636 part->running = 0; 637 wakeup(part); 638 /* wait for thread to finish. */ 639 while (part->running != -1) 640 msleep(part, &part->disk_mtx, 0, 641 "mmcsd disk detach", 0); 642 } 643 MMCSD_DISK_UNLOCK(part); 644 } 645 MMCSD_IOCTL_LOCK(part); 646 while (part->ioctl > 0) 647 msleep(part, &part->ioctl_mtx, 0, 648 "mmcsd IOCTL detach", 0); 649 part->ioctl = -1; 650 MMCSD_IOCTL_UNLOCK(part); 651 } 652 } 653 654 if (sc->rpmb_dev != NULL) 655 destroy_dev(sc->rpmb_dev); 656 657 for (i = 0; i < MMC_PART_MAX; i++) { 658 part = sc->part[i]; 659 if (part != NULL) { 660 if (part->disk != NULL) { 661 /* Flush the request queue. */ 662 bioq_flush(&part->bio_queue, NULL, ENXIO); 663 /* kill disk */ 664 disk_destroy(part->disk); 665 666 MMCSD_DISK_LOCK_DESTROY(part); 667 } 668 MMCSD_IOCTL_LOCK_DESTROY(part); 669 free(part, M_DEVBUF); 670 } 671 } 672 return (0); 673} 674 675static int 676mmcsd_suspend(device_t dev) 677{ 678 struct mmcsd_softc *sc = device_get_softc(dev); 679 struct mmcsd_part *part; 680 int i; 681 682 for (i = 0; i < MMC_PART_MAX; i++) { 683 part = sc->part[i]; 684 if (part != NULL) { 685 if (part->disk != NULL) { 686 MMCSD_DISK_LOCK(part); 687 part->suspend = 1; 688 if (part->running > 0) { 689 /* kill thread */ 690 part->running = 0; 691 wakeup(part); 692 /* wait for thread to finish. */ 693 while (part->running != -1) 694 msleep(part, &part->disk_mtx, 0, 695 "mmcsd disk suspension", 0); 696 } 697 MMCSD_DISK_UNLOCK(part); 698 } 699 MMCSD_IOCTL_LOCK(part); 700 while (part->ioctl > 0) 701 msleep(part, &part->ioctl_mtx, 0, 702 "mmcsd IOCTL suspension", 0); 703 part->ioctl = -1; 704 MMCSD_IOCTL_UNLOCK(part); 705 } 706 } 707 return (0); 708} 709 710static int 711mmcsd_resume(device_t dev) 712{ 713 struct mmcsd_softc *sc = device_get_softc(dev); 714 struct mmcsd_part *part; 715 int i; 716 717 for (i = 0; i < MMC_PART_MAX; i++) { 718 part = sc->part[i]; 719 if (part != NULL) { 720 if (part->disk != NULL) { 721 MMCSD_DISK_LOCK(part); 722 part->suspend = 0; 723 if (part->running <= 0) { 724 part->running = 1; 725 MMCSD_DISK_UNLOCK(part); 726 kproc_create(&mmcsd_task, part, 727 &part->p, 0, 0, "%s%d: mmc/sd card", 728 part->name, part->cnt); 729 } else 730 MMCSD_DISK_UNLOCK(part); 731 } 732 MMCSD_IOCTL_LOCK(part); 733 part->ioctl = 0; 734 MMCSD_IOCTL_UNLOCK(part); 735 } 736 } 737 return (0); 738} 739 740static int 741mmcsd_open(struct disk *dp __unused) 742{ 743 744 return (0); 745} 746 747static int 748mmcsd_close(struct disk *dp __unused) 749{ 750 751 return (0); 752} 753 754static void 755mmcsd_strategy(struct bio *bp) 756{ 757 struct mmcsd_softc *sc; 758 struct mmcsd_part *part; 759 760 part = bp->bio_disk->d_drv1; 761 sc = part->sc; 762 MMCSD_DISK_LOCK(part); 763 if (part->running > 0 || part->suspend > 0) { 764 bioq_disksort(&part->bio_queue, bp); 765 MMCSD_DISK_UNLOCK(part); 766 wakeup(part); 767 } else { 768 MMCSD_DISK_UNLOCK(part); 769 biofinish(bp, NULL, ENXIO); 770 } 771} 772 773static int 774mmcsd_ioctl_rpmb(struct cdev *dev, u_long cmd, caddr_t data, 775 int fflag, struct thread *td) 776{ 777 778 return (mmcsd_ioctl(dev->si_drv1, cmd, data, fflag, td)); 779} 780 781static int 782mmcsd_ioctl_disk(struct disk *disk, u_long cmd, void *data, int fflag, 783 struct thread *td) 784{ 785 786 return (mmcsd_ioctl(disk->d_drv1, cmd, data, fflag, td)); 787} 788 789static int 790mmcsd_ioctl(struct mmcsd_part *part, u_long cmd, void *data, int fflag, 791 struct thread *td) 792{ 793 struct mmc_ioc_cmd *mic; 794 struct mmc_ioc_multi_cmd *mimc; 795 int i, err; 796 u_long cnt, size; 797 798 if ((fflag & FREAD) == 0) 799 return (EBADF); 800 801 err = priv_check(td, PRIV_DRIVER); 802 if (err != 0) 803 return (err); 804 805 err = 0; 806 switch (cmd) { 807 case MMC_IOC_CMD: 808 mic = data; 809 err = mmcsd_ioctl_cmd(part, mic, fflag); 810 break; 811 case MMC_IOC_MULTI_CMD: 812 mimc = data; 813 if (mimc->num_of_cmds == 0) 814 break; 815 if (mimc->num_of_cmds > MMC_IOC_MAX_CMDS) 816 return (EINVAL); 817 cnt = mimc->num_of_cmds; 818 size = sizeof(*mic) * cnt; 819 mic = malloc(size, M_TEMP, M_WAITOK); 820 err = copyin((const void *)mimc->cmds, mic, size); 821 if (err == 0) { 822 for (i = 0; i < cnt; i++) { 823 err = mmcsd_ioctl_cmd(part, &mic[i], fflag); 824 if (err != 0) 825 break; 826 } 827 } 828 free(mic, M_TEMP); 829 break; 830 default: 831 return (ENOIOCTL); 832 } 833 return (err); 834} 835 836static int 837mmcsd_ioctl_cmd(struct mmcsd_part *part, struct mmc_ioc_cmd *mic, int fflag) 838{ 839 struct mmc_command cmd; 840 struct mmc_data data; 841 struct mmcsd_softc *sc; 842 device_t dev, mmcbus; 843 void *dp; 844 u_long len; 845 int err, retries; 846 uint32_t status; 847 uint16_t rca; 848 849 if ((fflag & FWRITE) == 0 && mic->write_flag != 0) 850 return (EBADF); 851 852 if (part->ro == TRUE && mic->write_flag != 0) 853 return (EROFS); 854 855 /* 856 * We don't need to explicitly lock against the disk(9) half of this 857 * driver as MMCBUS_ACQUIRE_BUS() will serialize us. However, it's 858 * necessary to protect against races with detachment and suspension, 859 * especially since it's required to switch away from RPMB partitions 860 * again after an access (see mmcsd_switch_part()). 861 */ 862 MMCSD_IOCTL_LOCK(part); 863 while (part->ioctl != 0) { 864 if (part->ioctl < 0) { 865 MMCSD_IOCTL_UNLOCK(part); 866 return (ENXIO); 867 } 868 msleep(part, &part->ioctl_mtx, 0, "mmcsd IOCTL", 0); 869 } 870 part->ioctl = 1; 871 MMCSD_IOCTL_UNLOCK(part); 872 873 err = 0; 874 dp = NULL; 875 len = mic->blksz * mic->blocks; 876 if (len > MMC_IOC_MAX_BYTES) { 877 err = EOVERFLOW; 878 goto out; 879 } 880 if (len != 0) { 881 dp = malloc(len, M_TEMP, M_WAITOK); 882 err = copyin((void *)(uintptr_t)mic->data_ptr, dp, len); 883 if (err != 0) 884 goto out; 885 } 886 memset(&cmd, 0, sizeof(cmd)); 887 memset(&data, 0, sizeof(data)); 888 cmd.opcode = mic->opcode; 889 cmd.arg = mic->arg; 890 cmd.flags = mic->flags; 891 if (len != 0) { 892 data.len = len; 893 data.data = dp; 894 data.flags = mic->write_flag != 0 ? MMC_DATA_WRITE : 895 MMC_DATA_READ; 896 cmd.data = &data; 897 } 898 sc = part->sc; 899 rca = sc->rca; 900 if (mic->is_acmd == 0) { 901 /* Enforce/patch/restrict RCA-based commands */ 902 switch (cmd.opcode) { 903 case MMC_SET_RELATIVE_ADDR: 904 case MMC_SELECT_CARD: 905 err = EPERM; 906 goto out; 907 case MMC_STOP_TRANSMISSION: 908 if ((cmd.arg & 0x1) == 0) 909 break; 910 /* FALLTHROUGH */ 911 case MMC_SLEEP_AWAKE: 912 case MMC_SEND_CSD: 913 case MMC_SEND_CID: 914 case MMC_SEND_STATUS: 915 case MMC_GO_INACTIVE_STATE: 916 case MMC_FAST_IO: 917 case MMC_APP_CMD: 918 cmd.arg = (cmd.arg & 0x0000FFFF) | (rca << 16); 919 break; 920 default: 921 break; 922 } 923 /* 924 * No partition switching in userland; it's almost impossible 925 * to recover from that, especially if things go wrong. 926 */ 927 if (cmd.opcode == MMC_SWITCH_FUNC && dp != NULL && 928 (((uint8_t *)dp)[EXT_CSD_PART_CONFIG] & 929 EXT_CSD_PART_CONFIG_ACC_MASK) != part->type) { 930 err = EINVAL; 931 goto out; 932 } 933 } 934 dev = sc->dev; 935 mmcbus = sc->mmcbus; 936 MMCBUS_ACQUIRE_BUS(mmcbus, dev); 937 err = mmcsd_switch_part(mmcbus, dev, rca, part->type); 938 if (err != MMC_ERR_NONE) 939 goto release; 940 if (part->type == EXT_CSD_PART_CONFIG_ACC_RPMB) { 941 err = mmcsd_set_blockcount(sc, mic->blocks, 942 mic->write_flag & (1 << 31)); 943 if (err != MMC_ERR_NONE) 944 goto switch_back; 945 } 946 if (mic->is_acmd != 0) 947 (void)mmc_wait_for_app_cmd(mmcbus, dev, rca, &cmd, 0); 948 else 949 (void)mmc_wait_for_cmd(mmcbus, dev, &cmd, 0); 950 if (part->type == EXT_CSD_PART_CONFIG_ACC_RPMB) { 951 /* 952 * If the request went to the RPMB partition, try to ensure 953 * that the command actually has completed. 954 */ 955 retries = MMCSD_CMD_RETRIES; 956 do { 957 err = mmc_send_status(mmcbus, dev, rca, &status); 958 if (err != MMC_ERR_NONE) 959 break; 960 if (R1_STATUS(status) == 0 && 961 R1_CURRENT_STATE(status) != R1_STATE_PRG) 962 break; 963 DELAY(1000); 964 } while (retries-- > 0); 965 } 966 /* 967 * If EXT_CSD was changed, our copy is outdated now. Specifically, 968 * the upper bits of EXT_CSD_PART_CONFIG used in mmcsd_switch_part(), 969 * so retrieve EXT_CSD again. 970 */ 971 if (cmd.opcode == MMC_SWITCH_FUNC) { 972 err = mmc_send_ext_csd(mmcbus, dev, sc->ext_csd); 973 if (err != MMC_ERR_NONE) 974 goto release; 975 } 976switch_back: 977 if (part->type == EXT_CSD_PART_CONFIG_ACC_RPMB) { 978 /* 979 * If the request went to the RPMB partition, always switch 980 * back to the default partition (see mmcsd_switch_part()). 981 */ 982 err = mmcsd_switch_part(mmcbus, dev, rca, 983 EXT_CSD_PART_CONFIG_ACC_DEFAULT); 984 if (err != MMC_ERR_NONE) 985 goto release; 986 } 987 MMCBUS_RELEASE_BUS(mmcbus, dev); 988 if (cmd.error != MMC_ERR_NONE) { 989 switch (cmd.error) { 990 case MMC_ERR_TIMEOUT: 991 err = ETIMEDOUT; 992 break; 993 case MMC_ERR_BADCRC: 994 err = EILSEQ; 995 break; 996 case MMC_ERR_INVALID: 997 err = EINVAL; 998 break; 999 case MMC_ERR_NO_MEMORY: 1000 err = ENOMEM; 1001 break; 1002 default: 1003 err = EIO; 1004 break; 1005 } 1006 goto out; 1007 } 1008 memcpy(mic->response, cmd.resp, 4 * sizeof(uint32_t)); 1009 if (mic->write_flag == 0 && len != 0) { 1010 err = copyout(dp, (void *)(uintptr_t)mic->data_ptr, len); 1011 if (err != 0) 1012 goto out; 1013 } 1014 goto out; 1015 1016release: 1017 MMCBUS_RELEASE_BUS(mmcbus, dev); 1018 err = EIO; 1019 1020out: 1021 MMCSD_IOCTL_LOCK(part); 1022 part->ioctl = 0; 1023 MMCSD_IOCTL_UNLOCK(part); 1024 wakeup(part); 1025 if (dp != NULL) 1026 free(dp, M_TEMP); 1027 return (err); 1028} 1029 1030static int 1031mmcsd_getattr(struct bio *bp) 1032{ 1033 struct mmcsd_part *part; 1034 device_t dev; 1035 1036 if (strcmp(bp->bio_attribute, "MMC::device") == 0) { 1037 if (bp->bio_length != sizeof(dev)) 1038 return (EFAULT); 1039 part = bp->bio_disk->d_drv1; 1040 dev = part->sc->dev; 1041 bcopy(&dev, bp->bio_data, sizeof(dev)); 1042 bp->bio_completed = bp->bio_length; 1043 return (0); 1044 } 1045 return (-1); 1046} 1047 1048static int 1049mmcsd_set_blockcount(struct mmcsd_softc *sc, u_int count, bool reliable) 1050{ 1051 struct mmc_command cmd; 1052 struct mmc_request req; 1053 1054 memset(&req, 0, sizeof(req)); 1055 memset(&cmd, 0, sizeof(cmd)); 1056 cmd.mrq = &req; 1057 req.cmd = &cmd; 1058 cmd.opcode = MMC_SET_BLOCK_COUNT; 1059 cmd.arg = count & 0x0000FFFF; 1060 if (reliable) 1061 cmd.arg |= 1 << 31; 1062 cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; 1063 MMCBUS_WAIT_FOR_REQUEST(sc->mmcbus, sc->dev, &req); 1064 return (cmd.error); 1065} 1066 1067static int 1068mmcsd_switch_part(device_t bus, device_t dev, uint16_t rca, u_int part) 1069{ 1070 struct mmcsd_softc *sc; 1071 int err; 1072 uint8_t value; 1073 1074 sc = device_get_softc(dev); 1075 1076 if (sc->mode == mode_sd) 1077 return (MMC_ERR_NONE); 1078 1079 /* 1080 * According to section "6.2.2 Command restrictions" of the eMMC 1081 * specification v5.1, CMD19/CMD21 aren't allowed to be used with 1082 * RPMB partitions. So we pause re-tuning along with triggering 1083 * it up-front to decrease the likelihood of re-tuning becoming 1084 * necessary while accessing an RPMB partition. Consequently, an 1085 * RPMB partition should immediately be switched away from again 1086 * after an access in order to allow for re-tuning to take place 1087 * anew. 1088 */ 1089 if (part == EXT_CSD_PART_CONFIG_ACC_RPMB) 1090 MMCBUS_RETUNE_PAUSE(sc->mmcbus, sc->dev, true); 1091 1092 if (sc->part_curr == part) 1093 return (MMC_ERR_NONE); 1094 1095 value = (sc->ext_csd[EXT_CSD_PART_CONFIG] & 1096 ~EXT_CSD_PART_CONFIG_ACC_MASK) | part; 1097 /* Jump! */ 1098 err = mmc_switch(bus, dev, rca, EXT_CSD_CMD_SET_NORMAL, 1099 EXT_CSD_PART_CONFIG, value, sc->part_time, true); 1100 if (err != MMC_ERR_NONE) { 1101 if (part == EXT_CSD_PART_CONFIG_ACC_RPMB) 1102 MMCBUS_RETUNE_UNPAUSE(sc->mmcbus, sc->dev); 1103 return (err); 1104 } 1105 1106 sc->ext_csd[EXT_CSD_PART_CONFIG] = value; 1107 if (sc->part_curr == EXT_CSD_PART_CONFIG_ACC_RPMB) 1108 MMCBUS_RETUNE_UNPAUSE(sc->mmcbus, sc->dev); 1109 sc->part_curr = part; 1110 return (MMC_ERR_NONE); 1111} 1112 1113static const char * 1114mmcsd_errmsg(int e) 1115{ 1116 1117 if (e < 0 || e > MMC_ERR_MAX) 1118 return "Bad error code"; 1119 return (errmsg[e]); 1120} 1121 1122static daddr_t 1123mmcsd_rw(struct mmcsd_part *part, struct bio *bp) 1124{ 1125 daddr_t block, end; 1126 struct mmc_command cmd; 1127 struct mmc_command stop; 1128 struct mmc_request req; 1129 struct mmc_data data; 1130 struct mmcsd_softc *sc; 1131 device_t dev, mmcbus; 1132 u_int numblocks, sz; 1133 char *vaddr; 1134 1135 sc = part->sc; 1136 dev = sc->dev; 1137 mmcbus = sc->mmcbus; 1138 1139 block = bp->bio_pblkno; 1140 sz = part->disk->d_sectorsize; 1141 end = bp->bio_pblkno + (bp->bio_bcount / sz); 1142 while (block < end) { 1143 vaddr = bp->bio_data + (block - bp->bio_pblkno) * sz; 1144 numblocks = min(end - block, sc->max_data); 1145 memset(&req, 0, sizeof(req)); 1146 memset(&cmd, 0, sizeof(cmd)); 1147 memset(&stop, 0, sizeof(stop)); 1148 memset(&data, 0, sizeof(data)); 1149 cmd.mrq = &req; 1150 req.cmd = &cmd; 1151 cmd.data = &data; 1152 if (bp->bio_cmd == BIO_READ) { 1153 if (numblocks > 1) 1154 cmd.opcode = MMC_READ_MULTIPLE_BLOCK; 1155 else 1156 cmd.opcode = MMC_READ_SINGLE_BLOCK; 1157 } else { 1158 if (numblocks > 1) 1159 cmd.opcode = MMC_WRITE_MULTIPLE_BLOCK; 1160 else 1161 cmd.opcode = MMC_WRITE_BLOCK; 1162 } 1163 cmd.arg = block; 1164 if (sc->high_cap == 0) 1165 cmd.arg <<= 9; 1166 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC; 1167 data.data = vaddr; 1168 data.mrq = &req; 1169 if (bp->bio_cmd == BIO_READ) 1170 data.flags = MMC_DATA_READ; 1171 else 1172 data.flags = MMC_DATA_WRITE; 1173 data.len = numblocks * sz; 1174 if (numblocks > 1) { 1175 data.flags |= MMC_DATA_MULTI; 1176 stop.opcode = MMC_STOP_TRANSMISSION; 1177 stop.arg = 0; 1178 stop.flags = MMC_RSP_R1B | MMC_CMD_AC; 1179 stop.mrq = &req; 1180 req.stop = &stop; 1181 } 1182 MMCBUS_WAIT_FOR_REQUEST(mmcbus, dev, &req); 1183 if (req.cmd->error != MMC_ERR_NONE) { 1184 if (ppsratecheck(&sc->log_time, &sc->log_count, 1185 LOG_PPS)) 1186 device_printf(dev, "Error indicated: %d %s\n", 1187 req.cmd->error, 1188 mmcsd_errmsg(req.cmd->error)); 1189 break; 1190 } 1191 block += numblocks; 1192 } 1193 return (block); 1194} 1195 1196static daddr_t 1197mmcsd_delete(struct mmcsd_part *part, struct bio *bp) 1198{ 1199 daddr_t block, end, start, stop; 1200 struct mmc_command cmd; 1201 struct mmc_request req; 1202 struct mmcsd_softc *sc; 1203 device_t dev, mmcbus; 1204 u_int erase_sector, sz; 1205 int err; 1206 bool use_trim; 1207 1208 sc = part->sc; 1209 dev = sc->dev; 1210 mmcbus = sc->mmcbus; 1211 1212 block = bp->bio_pblkno; 1213 sz = part->disk->d_sectorsize; 1214 end = bp->bio_pblkno + (bp->bio_bcount / sz); 1215 use_trim = sc->flags & MMCSD_USE_TRIM; 1216 if (use_trim == true) { 1217 start = block; 1218 stop = end; 1219 } else { 1220 /* Coalesce with the remainder of the previous request. */ 1221 if (block > part->eblock && block <= part->eend) 1222 block = part->eblock; 1223 if (end >= part->eblock && end < part->eend) 1224 end = part->eend; 1225 /* Safely round to the erase sector boundaries. */ 1226 erase_sector = sc->erase_sector; 1227 start = block + erase_sector - 1; /* Round up. */ 1228 start -= start % erase_sector; 1229 stop = end; /* Round down. */ 1230 stop -= end % erase_sector; 1231 /* 1232 * We can't erase an area smaller than an erase sector, so 1233 * store it for later. 1234 */ 1235 if (start >= stop) { 1236 part->eblock = block; 1237 part->eend = end; 1238 return (end); 1239 } 1240 } 1241 1242 if ((sc->flags & MMCSD_INAND_CMD38) != 0) { 1243 err = mmc_switch(mmcbus, dev, sc->rca, EXT_CSD_CMD_SET_NORMAL, 1244 EXT_CSD_INAND_CMD38, use_trim == true ? 1245 EXT_CSD_INAND_CMD38_TRIM : EXT_CSD_INAND_CMD38_ERASE, 1246 sc->cmd6_time, true); 1247 if (err != MMC_ERR_NONE) { 1248 device_printf(dev, 1249 "Setting iNAND erase command failed %s\n", 1250 mmcsd_errmsg(err)); 1251 return (block); 1252 } 1253 } 1254 1255 /* 1256 * Pause re-tuning so it won't interfere with the order of erase 1257 * commands. Note that these latter don't use the data lines, so 1258 * re-tuning shouldn't actually become necessary during erase. 1259 */ 1260 MMCBUS_RETUNE_PAUSE(mmcbus, dev, false); 1261 /* Set erase start position. */ 1262 memset(&req, 0, sizeof(req)); 1263 memset(&cmd, 0, sizeof(cmd)); 1264 cmd.mrq = &req; 1265 req.cmd = &cmd; 1266 if (mmc_get_card_type(dev) == mode_sd) 1267 cmd.opcode = SD_ERASE_WR_BLK_START; 1268 else 1269 cmd.opcode = MMC_ERASE_GROUP_START; 1270 cmd.arg = start; 1271 if (sc->high_cap == 0) 1272 cmd.arg <<= 9; 1273 cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; 1274 MMCBUS_WAIT_FOR_REQUEST(mmcbus, dev, &req); 1275 if (req.cmd->error != MMC_ERR_NONE) { 1276 device_printf(dev, "Setting erase start position failed %s\n", 1277 mmcsd_errmsg(req.cmd->error)); 1278 block = bp->bio_pblkno; 1279 goto unpause; 1280 } 1281 /* Set erase stop position. */ 1282 memset(&req, 0, sizeof(req)); 1283 memset(&cmd, 0, sizeof(cmd)); 1284 req.cmd = &cmd; 1285 if (mmc_get_card_type(dev) == mode_sd) 1286 cmd.opcode = SD_ERASE_WR_BLK_END; 1287 else 1288 cmd.opcode = MMC_ERASE_GROUP_END; 1289 cmd.arg = stop; 1290 if (sc->high_cap == 0) 1291 cmd.arg <<= 9; 1292 cmd.arg--; 1293 cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; 1294 MMCBUS_WAIT_FOR_REQUEST(mmcbus, dev, &req); 1295 if (req.cmd->error != MMC_ERR_NONE) { 1296 device_printf(dev, "Setting erase stop position failed %s\n", 1297 mmcsd_errmsg(req.cmd->error)); 1298 block = bp->bio_pblkno; 1299 goto unpause; 1300 } 1301 /* Erase range. */ 1302 memset(&req, 0, sizeof(req)); 1303 memset(&cmd, 0, sizeof(cmd)); 1304 req.cmd = &cmd; 1305 cmd.opcode = MMC_ERASE; 1306 cmd.arg = use_trim == true ? MMC_ERASE_TRIM : MMC_ERASE_ERASE; 1307 cmd.flags = MMC_RSP_R1B | MMC_CMD_AC; 1308 MMCBUS_WAIT_FOR_REQUEST(mmcbus, dev, &req); 1309 if (req.cmd->error != MMC_ERR_NONE) { 1310 device_printf(dev, "Issuing erase command failed %s\n", 1311 mmcsd_errmsg(req.cmd->error)); 1312 block = bp->bio_pblkno; 1313 goto unpause; 1314 } 1315 if (use_trim == false) { 1316 /* Store one of the remaining parts for the next call. */ 1317 if (bp->bio_pblkno >= part->eblock || block == start) { 1318 part->eblock = stop; /* Predict next forward. */ 1319 part->eend = end; 1320 } else { 1321 part->eblock = block; /* Predict next backward. */ 1322 part->eend = start; 1323 } 1324 } 1325 block = end; 1326unpause: 1327 MMCBUS_RETUNE_UNPAUSE(mmcbus, dev); 1328 return (block); 1329} 1330 1331static int 1332mmcsd_dump(void *arg, void *virtual, vm_offset_t physical, off_t offset, 1333 size_t length) 1334{ 1335 struct bio bp; 1336 daddr_t block, end; 1337 struct disk *disk; 1338 struct mmcsd_softc *sc; 1339 struct mmcsd_part *part; 1340 device_t dev, mmcbus; 1341 int err; 1342 1343 /* length zero is special and really means flush buffers to media */ 1344 if (!length) 1345 return (0); 1346 1347 disk = arg; 1348 part = disk->d_drv1; 1349 sc = part->sc; 1350 dev = sc->dev; 1351 mmcbus = sc->mmcbus; 1352 1353 g_reset_bio(&bp); 1354 bp.bio_disk = disk; 1355 bp.bio_pblkno = offset / disk->d_sectorsize; 1356 bp.bio_bcount = length; 1357 bp.bio_data = virtual; 1358 bp.bio_cmd = BIO_WRITE; 1359 end = bp.bio_pblkno + bp.bio_bcount / disk->d_sectorsize; 1360 MMCBUS_ACQUIRE_BUS(mmcbus, dev); 1361 err = mmcsd_switch_part(mmcbus, dev, sc->rca, part->type); 1362 if (err != MMC_ERR_NONE) { 1363 if (ppsratecheck(&sc->log_time, &sc->log_count, LOG_PPS)) 1364 device_printf(dev, "Partition switch error\n"); 1365 MMCBUS_RELEASE_BUS(mmcbus, dev); 1366 return (EIO); 1367 } 1368 block = mmcsd_rw(part, &bp); 1369 MMCBUS_RELEASE_BUS(mmcbus, dev); 1370 return ((end < block) ? EIO : 0); 1371} 1372 1373static void 1374mmcsd_task(void *arg) 1375{ 1376 daddr_t block, end; 1377 struct mmcsd_part *part; 1378 struct mmcsd_softc *sc; 1379 struct bio *bp; 1380 device_t dev, mmcbus; 1381 int err, sz; 1382 1383 part = arg; 1384 sc = part->sc; 1385 dev = sc->dev; 1386 mmcbus = sc->mmcbus; 1387 1388 while (1) { 1389 MMCSD_DISK_LOCK(part); 1390 do { 1391 if (part->running == 0) 1392 goto out; 1393 bp = bioq_takefirst(&part->bio_queue); 1394 if (bp == NULL) 1395 msleep(part, &part->disk_mtx, PRIBIO, 1396 "mmcsd disk jobqueue", 0); 1397 } while (bp == NULL); 1398 MMCSD_DISK_UNLOCK(part); 1399 if (bp->bio_cmd != BIO_READ && part->ro) { 1400 bp->bio_error = EROFS; 1401 bp->bio_resid = bp->bio_bcount; 1402 bp->bio_flags |= BIO_ERROR; 1403 biodone(bp); 1404 continue; 1405 } 1406 MMCBUS_ACQUIRE_BUS(mmcbus, dev); 1407 sz = part->disk->d_sectorsize; 1408 block = bp->bio_pblkno; 1409 end = bp->bio_pblkno + (bp->bio_bcount / sz); 1410 err = mmcsd_switch_part(mmcbus, dev, sc->rca, part->type); 1411 if (err != MMC_ERR_NONE) { 1412 if (ppsratecheck(&sc->log_time, &sc->log_count, 1413 LOG_PPS)) 1414 device_printf(dev, "Partition switch error\n"); 1415 goto release; 1416 } 1417 if (bp->bio_cmd == BIO_READ || bp->bio_cmd == BIO_WRITE) { 1418 /* Access to the remaining erase block obsoletes it. */ 1419 if (block < part->eend && end > part->eblock) 1420 part->eblock = part->eend = 0; 1421 block = mmcsd_rw(part, bp); 1422 } else if (bp->bio_cmd == BIO_DELETE) { 1423 block = mmcsd_delete(part, bp); 1424 } 1425release: 1426 MMCBUS_RELEASE_BUS(mmcbus, dev); 1427 if (block < end) { 1428 bp->bio_error = EIO; 1429 bp->bio_resid = (end - block) * sz; 1430 bp->bio_flags |= BIO_ERROR; 1431 } else { 1432 bp->bio_resid = 0; 1433 } 1434 biodone(bp); 1435 } 1436out: 1437 /* tell parent we're done */ 1438 part->running = -1; 1439 MMCSD_DISK_UNLOCK(part); 1440 wakeup(part); 1441 1442 kproc_exit(0); 1443} 1444 1445static int 1446mmcsd_bus_bit_width(device_t dev) 1447{ 1448 1449 if (mmc_get_bus_width(dev) == bus_width_1) 1450 return (1); 1451 if (mmc_get_bus_width(dev) == bus_width_4) 1452 return (4); 1453 return (8); 1454} 1455 1456static device_method_t mmcsd_methods[] = { 1457 DEVMETHOD(device_probe, mmcsd_probe), 1458 DEVMETHOD(device_attach, mmcsd_attach), 1459 DEVMETHOD(device_detach, mmcsd_detach), 1460 DEVMETHOD(device_suspend, mmcsd_suspend), 1461 DEVMETHOD(device_resume, mmcsd_resume), 1462 DEVMETHOD_END 1463}; 1464 1465static driver_t mmcsd_driver = { 1466 "mmcsd", 1467 mmcsd_methods, 1468 sizeof(struct mmcsd_softc), 1469}; 1470static devclass_t mmcsd_devclass; 1471 1472static int 1473mmcsd_handler(module_t mod __unused, int what, void *arg __unused) 1474{ 1475 1476 switch (what) { 1477 case MOD_LOAD: 1478 flash_register_slicer(mmcsd_slicer, FLASH_SLICES_TYPE_MMC, 1479 TRUE); 1480 return (0); 1481 case MOD_UNLOAD: 1482 flash_register_slicer(NULL, FLASH_SLICES_TYPE_MMC, TRUE); 1483 return (0); 1484 } 1485 return (0); 1486} 1487 1488DRIVER_MODULE(mmcsd, mmc, mmcsd_driver, mmcsd_devclass, mmcsd_handler, NULL); 1489MODULE_DEPEND(mmcsd, g_flashmap, 0, 0, 0); 1490MMC_DEPEND(mmcsd); 1491