1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2006 Bernd Walter. All rights reserved. 5 * Copyright (c) 2006 M. Warner Losh <imp@FreeBSD.org> 6 * Copyright (c) 2017 Marius Strobl <marius@FreeBSD.org> 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 * Portions of this software may have been developed with reference to 29 * the SD Simplified Specification. The following disclaimer may apply: 30 * 31 * The following conditions apply to the release of the simplified 32 * specification ("Simplified Specification") by the SD Card Association and 33 * the SD Group. The Simplified Specification is a subset of the complete SD 34 * Specification which is owned by the SD Card Association and the SD 35 * Group. This Simplified Specification is provided on a non-confidential 36 * basis subject to the disclaimers below. Any implementation of the 37 * Simplified Specification may require a license from the SD Card 38 * Association, SD Group, SD-3C LLC or other third parties. 39 * 40 * Disclaimers: 41 * 42 * The information contained in the Simplified Specification is presented only 43 * as a standard specification for SD Cards and SD Host/Ancillary products and 44 * is provided "AS-IS" without any representations or warranties of any 45 * kind. No responsibility is assumed by the SD Group, SD-3C LLC or the SD 46 * Card Association for any damages, any infringements of patents or other 47 * right of the SD Group, SD-3C LLC, the SD Card Association or any third 48 * parties, which may result from its use. No license is granted by 49 * implication, estoppel or otherwise under any patent or other rights of the 50 * SD Group, SD-3C LLC, the SD Card Association or any third party. Nothing 51 * herein shall be construed as an obligation by the SD Group, the SD-3C LLC 52 * or the SD Card Association to disclose or distribute any technical 53 * information, know-how or other confidential information to any third party. 54 */ 55 56 #include <sys/cdefs.h> 57 __FBSDID("$FreeBSD$"); 58 59 #include <sys/param.h> 60 #include <sys/systm.h> 61 #include <sys/bio.h> 62 #include <sys/bus.h> 63 #include <sys/conf.h> 64 #include <sys/endian.h> 65 #include <sys/fcntl.h> 66 #include <sys/ioccom.h> 67 #include <sys/kernel.h> 68 #include <sys/kthread.h> 69 #include <sys/lock.h> 70 #include <sys/malloc.h> 71 #include <sys/module.h> 72 #include <sys/mutex.h> 73 #include <sys/priv.h> 74 #include <sys/slicer.h> 75 #include <sys/sysctl.h> 76 #include <sys/time.h> 77 78 #include <geom/geom.h> 79 #include <geom/geom_disk.h> 80 81 #include <dev/mmc/bridge.h> 82 #include <dev/mmc/mmc_ioctl.h> 83 #include <dev/mmc/mmc_subr.h> 84 #include <dev/mmc/mmcbrvar.h> 85 #include <dev/mmc/mmcreg.h> 86 #include <dev/mmc/mmcvar.h> 87 88 #include "mmcbus_if.h" 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 mmcbus; 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 flags; 130 #define MMCSD_INAND_CMD38 0x0001 131 #define MMCSD_USE_TRIM 0x0002 132 #define MMCSD_FLUSH_CACHE 0x0004 133 #define MMCSD_DIRTY 0x0008 134 uint32_t cmd6_time; /* Generic switch timeout [us] */ 135 uint32_t part_time; /* Partition switch timeout [us] */ 136 off_t enh_base; /* Enhanced user data area slice base ... */ 137 off_t enh_size; /* ... and size [bytes] */ 138 int log_count; 139 struct timeval log_time; 140 struct cdev *rpmb_dev; 141 }; 142 143 static const char *errmsg[] = 144 { 145 "None", 146 "Timeout", 147 "Bad CRC", 148 "Fifo", 149 "Failed", 150 "Invalid", 151 "NO MEMORY" 152 }; 153 154 static SYSCTL_NODE(_hw, OID_AUTO, mmcsd, CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, 155 "mmcsd driver"); 156 157 static int mmcsd_cache = 1; 158 SYSCTL_INT(_hw_mmcsd, OID_AUTO, cache, CTLFLAG_RDTUN, &mmcsd_cache, 0, 159 "Device R/W cache enabled if present"); 160 161 #define LOG_PPS 5 /* Log no more than 5 errors per second. */ 162 163 /* bus entry points */ 164 static int mmcsd_attach(device_t dev); 165 static int mmcsd_detach(device_t dev); 166 static int mmcsd_probe(device_t dev); 167 static int mmcsd_shutdown(device_t dev); 168 169 /* disk routines */ 170 static int mmcsd_close(struct disk *dp); 171 static int mmcsd_dump(void *arg, void *virtual, off_t offset, size_t length); 172 static int mmcsd_getattr(struct bio *); 173 static int mmcsd_ioctl_disk(struct disk *disk, u_long cmd, void *data, 174 int fflag, struct thread *td); 175 static void mmcsd_strategy(struct bio *bp); 176 static void mmcsd_task(void *arg); 177 178 /* RMPB cdev interface */ 179 static int mmcsd_ioctl_rpmb(struct cdev *dev, u_long cmd, caddr_t data, 180 int fflag, struct thread *td); 181 182 static void mmcsd_add_part(struct mmcsd_softc *sc, u_int type, 183 const char *name, u_int cnt, off_t media_size, bool ro); 184 static int mmcsd_bus_bit_width(device_t dev); 185 static daddr_t mmcsd_delete(struct mmcsd_part *part, struct bio *bp); 186 static const char *mmcsd_errmsg(int e); 187 static int mmcsd_flush_cache(struct mmcsd_softc *sc); 188 static int mmcsd_ioctl(struct mmcsd_part *part, u_long cmd, void *data, 189 int fflag, struct thread *td); 190 static int mmcsd_ioctl_cmd(struct mmcsd_part *part, struct mmc_ioc_cmd *mic, 191 int fflag); 192 static uintmax_t mmcsd_pretty_size(off_t size, char *unit); 193 static daddr_t mmcsd_rw(struct mmcsd_part *part, struct bio *bp); 194 static int mmcsd_set_blockcount(struct mmcsd_softc *sc, u_int count, bool rel); 195 static int mmcsd_slicer(device_t dev, const char *provider, 196 struct flash_slice *slices, int *nslices); 197 static int mmcsd_switch_part(device_t bus, device_t dev, uint16_t rca, 198 u_int part); 199 200 #define MMCSD_DISK_LOCK(_part) mtx_lock(&(_part)->disk_mtx) 201 #define MMCSD_DISK_UNLOCK(_part) mtx_unlock(&(_part)->disk_mtx) 202 #define MMCSD_DISK_LOCK_INIT(_part) \ 203 mtx_init(&(_part)->disk_mtx, (_part)->name, "mmcsd disk", MTX_DEF) 204 #define MMCSD_DISK_LOCK_DESTROY(_part) mtx_destroy(&(_part)->disk_mtx); 205 #define MMCSD_DISK_ASSERT_LOCKED(_part) \ 206 mtx_assert(&(_part)->disk_mtx, MA_OWNED); 207 #define MMCSD_DISK_ASSERT_UNLOCKED(_part) \ 208 mtx_assert(&(_part)->disk_mtx, MA_NOTOWNED); 209 210 #define MMCSD_IOCTL_LOCK(_part) mtx_lock(&(_part)->ioctl_mtx) 211 #define MMCSD_IOCTL_UNLOCK(_part) mtx_unlock(&(_part)->ioctl_mtx) 212 #define MMCSD_IOCTL_LOCK_INIT(_part) \ 213 mtx_init(&(_part)->ioctl_mtx, (_part)->name, "mmcsd IOCTL", MTX_DEF) 214 #define MMCSD_IOCTL_LOCK_DESTROY(_part) mtx_destroy(&(_part)->ioctl_mtx); 215 #define MMCSD_IOCTL_ASSERT_LOCKED(_part) \ 216 mtx_assert(&(_part)->ioctl_mtx, MA_OWNED); 217 #define MMCSD_IOCLT_ASSERT_UNLOCKED(_part) \ 218 mtx_assert(&(_part)->ioctl_mtx, MA_NOTOWNED); 219 220 static int 221 mmcsd_probe(device_t dev) 222 { 223 224 device_quiet(dev); 225 device_set_desc(dev, "MMC/SD Memory Card"); 226 return (0); 227 } 228 229 static int 230 mmcsd_attach(device_t dev) 231 { 232 device_t mmcbus; 233 struct mmcsd_softc *sc; 234 const uint8_t *ext_csd; 235 off_t erase_size, sector_size, size, wp_size; 236 uintmax_t bytes; 237 int err, i; 238 uint32_t quirks; 239 uint8_t rev; 240 bool comp, ro; 241 char unit[2]; 242 243 sc = device_get_softc(dev); 244 sc->dev = dev; 245 sc->mmcbus = mmcbus = device_get_parent(dev); 246 sc->mode = mmc_get_card_type(dev); 247 /* 248 * Note that in principle with an SDHCI-like re-tuning implementation, 249 * the maximum data size can change at runtime due to a device removal/ 250 * insertion that results in switches to/from a transfer mode involving 251 * re-tuning, iff there are multiple devices on a given bus. Until now 252 * mmc(4) lacks support for rescanning already attached buses, however, 253 * and sdhci(4) to date has no support for shared buses in the first 254 * place either. 255 */ 256 sc->max_data = mmc_get_max_data(dev); 257 sc->high_cap = mmc_get_high_cap(dev); 258 sc->rca = mmc_get_rca(dev); 259 sc->cmd6_time = mmc_get_cmd6_timeout(dev); 260 quirks = mmc_get_quirks(dev); 261 262 /* Only MMC >= 4.x devices support EXT_CSD. */ 263 if (mmc_get_spec_vers(dev) >= 4) { 264 MMCBUS_ACQUIRE_BUS(mmcbus, dev); 265 err = mmc_send_ext_csd(mmcbus, dev, sc->ext_csd); 266 MMCBUS_RELEASE_BUS(mmcbus, dev); 267 if (err != MMC_ERR_NONE) { 268 device_printf(dev, "Error reading EXT_CSD %s\n", 269 mmcsd_errmsg(err)); 270 return (ENXIO); 271 } 272 } 273 ext_csd = sc->ext_csd; 274 275 if ((quirks & MMC_QUIRK_INAND_CMD38) != 0) { 276 if (mmc_get_spec_vers(dev) < 4) { 277 device_printf(dev, 278 "MMC_QUIRK_INAND_CMD38 set but no EXT_CSD\n"); 279 return (EINVAL); 280 } 281 sc->flags |= MMCSD_INAND_CMD38; 282 } 283 284 /* 285 * EXT_CSD_SEC_FEATURE_SUPPORT_GB_CL_EN denotes support for both 286 * insecure and secure TRIM. 287 */ 288 if ((ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT] & 289 EXT_CSD_SEC_FEATURE_SUPPORT_GB_CL_EN) != 0 && 290 (quirks & MMC_QUIRK_BROKEN_TRIM) == 0) { 291 if (bootverbose) 292 device_printf(dev, "taking advantage of TRIM\n"); 293 sc->flags |= MMCSD_USE_TRIM; 294 sc->erase_sector = 1; 295 } else 296 sc->erase_sector = mmc_get_erase_sector(dev); 297 298 /* 299 * Enhanced user data area and general purpose partitions are only 300 * supported in revision 1.4 (EXT_CSD_REV == 4) and later, the RPMB 301 * partition in revision 1.5 (MMC v4.41, EXT_CSD_REV == 5) and later. 302 */ 303 rev = ext_csd[EXT_CSD_REV]; 304 305 /* 306 * With revision 1.5 (MMC v4.5, EXT_CSD_REV == 6) and later, take 307 * advantage of the device R/W cache if present and useage is not 308 * disabled. 309 */ 310 if (rev >= 6 && mmcsd_cache != 0) { 311 size = le32dec(&ext_csd[EXT_CSD_CACHE_SIZE]); 312 if (bootverbose) 313 device_printf(dev, "cache size %juKB\n", size); 314 if (size > 0) { 315 MMCBUS_ACQUIRE_BUS(mmcbus, dev); 316 err = mmc_switch(mmcbus, dev, sc->rca, 317 EXT_CSD_CMD_SET_NORMAL, EXT_CSD_CACHE_CTRL, 318 EXT_CSD_CACHE_CTRL_CACHE_EN, sc->cmd6_time, true); 319 MMCBUS_RELEASE_BUS(mmcbus, dev); 320 if (err != MMC_ERR_NONE) 321 device_printf(dev, "failed to enable cache\n"); 322 else 323 sc->flags |= MMCSD_FLUSH_CACHE; 324 } 325 } 326 327 /* 328 * Ignore user-creatable enhanced user data area and general purpose 329 * partitions partitions as long as partitioning hasn't been finished. 330 */ 331 comp = (ext_csd[EXT_CSD_PART_SET] & EXT_CSD_PART_SET_COMPLETED) != 0; 332 333 /* 334 * Add enhanced user data area slice, unless it spans the entirety of 335 * the user data area. The enhanced area is of a multiple of high 336 * capacity write protect groups ((ERASE_GRP_SIZE + HC_WP_GRP_SIZE) * 337 * 512 KB) and its offset given in either sectors or bytes, depending 338 * on whether it's a high capacity device or not. 339 * NB: The slicer and its slices need to be registered before adding 340 * the disk for the corresponding user data area as re-tasting is 341 * racy. 342 */ 343 sector_size = mmc_get_sector_size(dev); 344 size = ext_csd[EXT_CSD_ENH_SIZE_MULT] + 345 (ext_csd[EXT_CSD_ENH_SIZE_MULT + 1] << 8) + 346 (ext_csd[EXT_CSD_ENH_SIZE_MULT + 2] << 16); 347 if (rev >= 4 && comp == TRUE && size > 0 && 348 (ext_csd[EXT_CSD_PART_SUPPORT] & 349 EXT_CSD_PART_SUPPORT_ENH_ATTR_EN) != 0 && 350 (ext_csd[EXT_CSD_PART_ATTR] & (EXT_CSD_PART_ATTR_ENH_USR)) != 0) { 351 erase_size = ext_csd[EXT_CSD_ERASE_GRP_SIZE] * 1024 * 352 MMC_SECTOR_SIZE; 353 wp_size = ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 354 size *= erase_size * wp_size; 355 if (size != mmc_get_media_size(dev) * sector_size) { 356 sc->enh_size = size; 357 sc->enh_base = 358 le32dec(&ext_csd[EXT_CSD_ENH_START_ADDR]) * 359 (sc->high_cap == 0 ? MMC_SECTOR_SIZE : 1); 360 } else if (bootverbose) 361 device_printf(dev, 362 "enhanced user data area spans entire device\n"); 363 } 364 365 /* 366 * Add default partition. This may be the only one or the user 367 * data area in case partitions are supported. 368 */ 369 ro = mmc_get_read_only(dev); 370 mmcsd_add_part(sc, EXT_CSD_PART_CONFIG_ACC_DEFAULT, "mmcsd", 371 device_get_unit(dev), mmc_get_media_size(dev) * sector_size, ro); 372 373 if (mmc_get_spec_vers(dev) < 3) 374 return (0); 375 376 /* Belatedly announce enhanced user data slice. */ 377 if (sc->enh_size != 0) { 378 bytes = mmcsd_pretty_size(size, unit); 379 printf(FLASH_SLICES_FMT ": %ju%sB enhanced user data area " 380 "slice offset 0x%jx at %s\n", device_get_nameunit(dev), 381 MMCSD_LABEL_ENH, bytes, unit, (uintmax_t)sc->enh_base, 382 device_get_nameunit(dev)); 383 } 384 385 /* 386 * Determine partition switch timeout (provided in units of 10 ms) 387 * and ensure it's at least 300 ms as some eMMC chips lie. 388 */ 389 sc->part_time = max(ext_csd[EXT_CSD_PART_SWITCH_TO] * 10 * 1000, 390 300 * 1000); 391 392 /* Add boot partitions, which are of a fixed multiple of 128 KB. */ 393 size = ext_csd[EXT_CSD_BOOT_SIZE_MULT] * MMC_BOOT_RPMB_BLOCK_SIZE; 394 if (size > 0 && (mmcbr_get_caps(mmcbus) & MMC_CAP_BOOT_NOACC) == 0) { 395 mmcsd_add_part(sc, EXT_CSD_PART_CONFIG_ACC_BOOT0, 396 MMCSD_FMT_BOOT, 0, size, 397 ro | ((ext_csd[EXT_CSD_BOOT_WP_STATUS] & 398 EXT_CSD_BOOT_WP_STATUS_BOOT0_MASK) != 0)); 399 mmcsd_add_part(sc, EXT_CSD_PART_CONFIG_ACC_BOOT1, 400 MMCSD_FMT_BOOT, 1, size, 401 ro | ((ext_csd[EXT_CSD_BOOT_WP_STATUS] & 402 EXT_CSD_BOOT_WP_STATUS_BOOT1_MASK) != 0)); 403 } 404 405 /* Add RPMB partition, which also is of a fixed multiple of 128 KB. */ 406 size = ext_csd[EXT_CSD_RPMB_MULT] * MMC_BOOT_RPMB_BLOCK_SIZE; 407 if (rev >= 5 && size > 0) 408 mmcsd_add_part(sc, EXT_CSD_PART_CONFIG_ACC_RPMB, 409 MMCSD_FMT_RPMB, 0, size, ro); 410 411 if (rev <= 3 || comp == FALSE) 412 return (0); 413 414 /* 415 * Add general purpose partitions, which are of a multiple of high 416 * capacity write protect groups, too. 417 */ 418 if ((ext_csd[EXT_CSD_PART_SUPPORT] & EXT_CSD_PART_SUPPORT_EN) != 0) { 419 erase_size = ext_csd[EXT_CSD_ERASE_GRP_SIZE] * 1024 * 420 MMC_SECTOR_SIZE; 421 wp_size = ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 422 for (i = 0; i < MMC_PART_GP_MAX; i++) { 423 size = ext_csd[EXT_CSD_GP_SIZE_MULT + i * 3] + 424 (ext_csd[EXT_CSD_GP_SIZE_MULT + i * 3 + 1] << 8) + 425 (ext_csd[EXT_CSD_GP_SIZE_MULT + i * 3 + 2] << 16); 426 if (size == 0) 427 continue; 428 mmcsd_add_part(sc, EXT_CSD_PART_CONFIG_ACC_GP0 + i, 429 MMCSD_FMT_GP, i, size * erase_size * wp_size, ro); 430 } 431 } 432 return (0); 433 } 434 435 static uintmax_t 436 mmcsd_pretty_size(off_t size, char *unit) 437 { 438 uintmax_t bytes; 439 int i; 440 441 /* 442 * Display in most natural units. There's no card < 1MB. However, 443 * RPMB partitions occasionally are smaller than that, though. The 444 * SD standard goes to 2 GiB due to its reliance on FAT, but the data 445 * format supports up to 4 GiB and some card makers push it up to this 446 * limit. The SDHC standard only goes to 32 GiB due to FAT32, but the 447 * data format supports up to 2 TiB however. 2048 GB isn't too ugly, 448 * so we note it in passing here and don't add the code to print TB). 449 * Since these cards are sold in terms of MB and GB not MiB and GiB, 450 * report them like that. We also round to the nearest unit, since 451 * many cards are a few percent short, even of the power of 10 size. 452 */ 453 bytes = size; 454 unit[0] = unit[1] = '\0'; 455 for (i = 0; i <= 2 && bytes >= 1000; i++) { 456 bytes = (bytes + 1000 / 2 - 1) / 1000; 457 switch (i) { 458 case 0: 459 unit[0] = 'k'; 460 break; 461 case 1: 462 unit[0] = 'M'; 463 break; 464 case 2: 465 unit[0] = 'G'; 466 break; 467 default: 468 break; 469 } 470 } 471 return (bytes); 472 } 473 474 static struct cdevsw mmcsd_rpmb_cdevsw = { 475 .d_version = D_VERSION, 476 .d_name = "mmcsdrpmb", 477 .d_ioctl = mmcsd_ioctl_rpmb 478 }; 479 480 static void 481 mmcsd_add_part(struct mmcsd_softc *sc, u_int type, const char *name, u_int cnt, 482 off_t media_size, bool ro) 483 { 484 struct make_dev_args args; 485 device_t dev, mmcbus; 486 const char *ext; 487 const uint8_t *ext_csd; 488 struct mmcsd_part *part; 489 struct disk *d; 490 uintmax_t bytes; 491 u_int gp; 492 uint32_t speed; 493 uint8_t extattr; 494 bool enh; 495 char unit[2]; 496 497 dev = sc->dev; 498 mmcbus = sc->mmcbus; 499 part = sc->part[type] = malloc(sizeof(*part), M_DEVBUF, 500 M_WAITOK | M_ZERO); 501 part->sc = sc; 502 part->cnt = cnt; 503 part->type = type; 504 part->ro = ro; 505 snprintf(part->name, sizeof(part->name), name, device_get_unit(dev)); 506 507 MMCSD_IOCTL_LOCK_INIT(part); 508 509 /* 510 * For the RPMB partition, allow IOCTL access only. 511 * NB: If ever attaching RPMB partitions to disk(9), the re-tuning 512 * implementation and especially its pausing need to be revisited, 513 * because then re-tuning requests may be issued by the IOCTL half 514 * of this driver while re-tuning is already paused by the disk(9) 515 * one and vice versa. 516 */ 517 if (type == EXT_CSD_PART_CONFIG_ACC_RPMB) { 518 make_dev_args_init(&args); 519 args.mda_flags = MAKEDEV_CHECKNAME | MAKEDEV_WAITOK; 520 args.mda_devsw = &mmcsd_rpmb_cdevsw; 521 args.mda_uid = UID_ROOT; 522 args.mda_gid = GID_OPERATOR; 523 args.mda_mode = 0640; 524 args.mda_si_drv1 = part; 525 if (make_dev_s(&args, &sc->rpmb_dev, "%s", part->name) != 0) { 526 device_printf(dev, "Failed to make RPMB device\n"); 527 free(part, M_DEVBUF); 528 return; 529 } 530 } else { 531 MMCSD_DISK_LOCK_INIT(part); 532 533 d = part->disk = disk_alloc(); 534 d->d_close = mmcsd_close; 535 d->d_strategy = mmcsd_strategy; 536 d->d_ioctl = mmcsd_ioctl_disk; 537 d->d_dump = mmcsd_dump; 538 d->d_getattr = mmcsd_getattr; 539 d->d_name = part->name; 540 d->d_drv1 = part; 541 d->d_sectorsize = mmc_get_sector_size(dev); 542 d->d_maxsize = sc->max_data * d->d_sectorsize; 543 d->d_mediasize = media_size; 544 d->d_stripesize = sc->erase_sector * d->d_sectorsize; 545 d->d_unit = cnt; 546 d->d_flags = DISKFLAG_CANDELETE; 547 if ((sc->flags & MMCSD_FLUSH_CACHE) != 0) 548 d->d_flags |= DISKFLAG_CANFLUSHCACHE; 549 d->d_delmaxsize = mmc_get_erase_sector(dev) * d->d_sectorsize; 550 strlcpy(d->d_ident, mmc_get_card_sn_string(dev), 551 sizeof(d->d_ident)); 552 strlcpy(d->d_descr, mmc_get_card_id_string(dev), 553 sizeof(d->d_descr)); 554 d->d_rotation_rate = DISK_RR_NON_ROTATING; 555 556 disk_create(d, DISK_VERSION); 557 bioq_init(&part->bio_queue); 558 559 part->running = 1; 560 kproc_create(&mmcsd_task, part, &part->p, 0, 0, 561 "%s%d: mmc/sd card", part->name, cnt); 562 } 563 564 bytes = mmcsd_pretty_size(media_size, unit); 565 if (type == EXT_CSD_PART_CONFIG_ACC_DEFAULT) { 566 speed = mmcbr_get_clock(mmcbus); 567 printf("%s%d: %ju%sB <%s>%s at %s %d.%01dMHz/%dbit/%d-block\n", 568 part->name, cnt, bytes, unit, mmc_get_card_id_string(dev), 569 ro ? " (read-only)" : "", device_get_nameunit(mmcbus), 570 speed / 1000000, (speed / 100000) % 10, 571 mmcsd_bus_bit_width(dev), sc->max_data); 572 } else if (type == EXT_CSD_PART_CONFIG_ACC_RPMB) { 573 printf("%s: %ju%sB partition %d%s at %s\n", part->name, bytes, 574 unit, type, ro ? " (read-only)" : "", 575 device_get_nameunit(dev)); 576 } else { 577 enh = false; 578 ext = NULL; 579 extattr = 0; 580 if (type >= EXT_CSD_PART_CONFIG_ACC_GP0 && 581 type <= EXT_CSD_PART_CONFIG_ACC_GP3) { 582 ext_csd = sc->ext_csd; 583 gp = type - EXT_CSD_PART_CONFIG_ACC_GP0; 584 if ((ext_csd[EXT_CSD_PART_SUPPORT] & 585 EXT_CSD_PART_SUPPORT_ENH_ATTR_EN) != 0 && 586 (ext_csd[EXT_CSD_PART_ATTR] & 587 (EXT_CSD_PART_ATTR_ENH_GP0 << gp)) != 0) 588 enh = true; 589 else if ((ext_csd[EXT_CSD_PART_SUPPORT] & 590 EXT_CSD_PART_SUPPORT_EXT_ATTR_EN) != 0) { 591 extattr = (ext_csd[EXT_CSD_EXT_PART_ATTR + 592 (gp / 2)] >> (4 * (gp % 2))) & 0xF; 593 switch (extattr) { 594 case EXT_CSD_EXT_PART_ATTR_DEFAULT: 595 break; 596 case EXT_CSD_EXT_PART_ATTR_SYSTEMCODE: 597 ext = "system code"; 598 break; 599 case EXT_CSD_EXT_PART_ATTR_NPERSISTENT: 600 ext = "non-persistent"; 601 break; 602 default: 603 ext = "reserved"; 604 break; 605 } 606 } 607 } 608 if (ext == NULL) 609 printf("%s%d: %ju%sB partition %d%s%s at %s\n", 610 part->name, cnt, bytes, unit, type, enh ? 611 " enhanced" : "", ro ? " (read-only)" : "", 612 device_get_nameunit(dev)); 613 else 614 printf("%s%d: %ju%sB partition %d extended 0x%x " 615 "(%s)%s at %s\n", part->name, cnt, bytes, unit, 616 type, extattr, ext, ro ? " (read-only)" : "", 617 device_get_nameunit(dev)); 618 } 619 } 620 621 static int 622 mmcsd_slicer(device_t dev, const char *provider, 623 struct flash_slice *slices, int *nslices) 624 { 625 char name[MMCSD_PART_NAMELEN]; 626 struct mmcsd_softc *sc; 627 struct mmcsd_part *part; 628 629 *nslices = 0; 630 if (slices == NULL) 631 return (ENOMEM); 632 633 sc = device_get_softc(dev); 634 if (sc->enh_size == 0) 635 return (ENXIO); 636 637 part = sc->part[EXT_CSD_PART_CONFIG_ACC_DEFAULT]; 638 snprintf(name, sizeof(name), "%s%d", part->disk->d_name, 639 part->disk->d_unit); 640 if (strcmp(name, provider) != 0) 641 return (ENXIO); 642 643 *nslices = 1; 644 slices[0].base = sc->enh_base; 645 slices[0].size = sc->enh_size; 646 slices[0].label = MMCSD_LABEL_ENH; 647 return (0); 648 } 649 650 static int 651 mmcsd_detach(device_t dev) 652 { 653 struct mmcsd_softc *sc = device_get_softc(dev); 654 struct mmcsd_part *part; 655 int i; 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 MMCSD_DISK_LOCK(part); 662 part->suspend = 0; 663 if (part->running > 0) { 664 /* kill thread */ 665 part->running = 0; 666 wakeup(part); 667 /* wait for thread to finish. */ 668 while (part->running != -1) 669 msleep(part, &part->disk_mtx, 0, 670 "mmcsd disk detach", 0); 671 } 672 MMCSD_DISK_UNLOCK(part); 673 } 674 MMCSD_IOCTL_LOCK(part); 675 while (part->ioctl > 0) 676 msleep(part, &part->ioctl_mtx, 0, 677 "mmcsd IOCTL detach", 0); 678 part->ioctl = -1; 679 MMCSD_IOCTL_UNLOCK(part); 680 } 681 } 682 683 if (sc->rpmb_dev != NULL) 684 destroy_dev(sc->rpmb_dev); 685 686 for (i = 0; i < MMC_PART_MAX; i++) { 687 part = sc->part[i]; 688 if (part != NULL) { 689 if (part->disk != NULL) { 690 /* Flush the request queue. */ 691 bioq_flush(&part->bio_queue, NULL, ENXIO); 692 /* kill disk */ 693 disk_destroy(part->disk); 694 695 MMCSD_DISK_LOCK_DESTROY(part); 696 } 697 MMCSD_IOCTL_LOCK_DESTROY(part); 698 free(part, M_DEVBUF); 699 } 700 } 701 if (mmcsd_flush_cache(sc) != MMC_ERR_NONE) 702 device_printf(dev, "failed to flush cache\n"); 703 return (0); 704 } 705 706 static int 707 mmcsd_shutdown(device_t dev) 708 { 709 struct mmcsd_softc *sc = device_get_softc(dev); 710 711 if (mmcsd_flush_cache(sc) != MMC_ERR_NONE) 712 device_printf(dev, "failed to flush cache\n"); 713 return (0); 714 } 715 716 static int 717 mmcsd_suspend(device_t dev) 718 { 719 struct mmcsd_softc *sc = device_get_softc(dev); 720 struct mmcsd_part *part; 721 int i; 722 723 for (i = 0; i < MMC_PART_MAX; i++) { 724 part = sc->part[i]; 725 if (part != NULL) { 726 if (part->disk != NULL) { 727 MMCSD_DISK_LOCK(part); 728 part->suspend = 1; 729 if (part->running > 0) { 730 /* kill thread */ 731 part->running = 0; 732 wakeup(part); 733 /* wait for thread to finish. */ 734 while (part->running != -1) 735 msleep(part, &part->disk_mtx, 0, 736 "mmcsd disk suspension", 0); 737 } 738 MMCSD_DISK_UNLOCK(part); 739 } 740 MMCSD_IOCTL_LOCK(part); 741 while (part->ioctl > 0) 742 msleep(part, &part->ioctl_mtx, 0, 743 "mmcsd IOCTL suspension", 0); 744 part->ioctl = -1; 745 MMCSD_IOCTL_UNLOCK(part); 746 } 747 } 748 if (mmcsd_flush_cache(sc) != MMC_ERR_NONE) 749 device_printf(dev, "failed to flush cache\n"); 750 return (0); 751 } 752 753 static int 754 mmcsd_resume(device_t dev) 755 { 756 struct mmcsd_softc *sc = device_get_softc(dev); 757 struct mmcsd_part *part; 758 int i; 759 760 for (i = 0; i < MMC_PART_MAX; i++) { 761 part = sc->part[i]; 762 if (part != NULL) { 763 if (part->disk != NULL) { 764 MMCSD_DISK_LOCK(part); 765 part->suspend = 0; 766 if (part->running <= 0) { 767 part->running = 1; 768 MMCSD_DISK_UNLOCK(part); 769 kproc_create(&mmcsd_task, part, 770 &part->p, 0, 0, "%s%d: mmc/sd card", 771 part->name, part->cnt); 772 } else 773 MMCSD_DISK_UNLOCK(part); 774 } 775 MMCSD_IOCTL_LOCK(part); 776 part->ioctl = 0; 777 MMCSD_IOCTL_UNLOCK(part); 778 } 779 } 780 return (0); 781 } 782 783 static int 784 mmcsd_close(struct disk *dp) 785 { 786 struct mmcsd_softc *sc; 787 788 if ((dp->d_flags & DISKFLAG_OPEN) != 0) { 789 sc = ((struct mmcsd_part *)dp->d_drv1)->sc; 790 if (mmcsd_flush_cache(sc) != MMC_ERR_NONE) 791 device_printf(sc->dev, "failed to flush cache\n"); 792 } 793 return (0); 794 } 795 796 static void 797 mmcsd_strategy(struct bio *bp) 798 { 799 struct mmcsd_part *part; 800 801 part = bp->bio_disk->d_drv1; 802 MMCSD_DISK_LOCK(part); 803 if (part->running > 0 || part->suspend > 0) { 804 bioq_disksort(&part->bio_queue, bp); 805 MMCSD_DISK_UNLOCK(part); 806 wakeup(part); 807 } else { 808 MMCSD_DISK_UNLOCK(part); 809 biofinish(bp, NULL, ENXIO); 810 } 811 } 812 813 static int 814 mmcsd_ioctl_rpmb(struct cdev *dev, u_long cmd, caddr_t data, 815 int fflag, struct thread *td) 816 { 817 818 return (mmcsd_ioctl(dev->si_drv1, cmd, data, fflag, td)); 819 } 820 821 static int 822 mmcsd_ioctl_disk(struct disk *disk, u_long cmd, void *data, int fflag, 823 struct thread *td) 824 { 825 826 return (mmcsd_ioctl(disk->d_drv1, cmd, data, fflag, td)); 827 } 828 829 static int 830 mmcsd_ioctl(struct mmcsd_part *part, u_long cmd, void *data, int fflag, 831 struct thread *td) 832 { 833 struct mmc_ioc_cmd *mic; 834 struct mmc_ioc_multi_cmd *mimc; 835 int i, err; 836 u_long cnt, size; 837 838 if ((fflag & FREAD) == 0) 839 return (EBADF); 840 841 err = priv_check(td, PRIV_DRIVER); 842 if (err != 0) 843 return (err); 844 845 err = 0; 846 switch (cmd) { 847 case MMC_IOC_CMD: 848 mic = data; 849 err = mmcsd_ioctl_cmd(part, mic, fflag); 850 break; 851 case MMC_IOC_MULTI_CMD: 852 mimc = data; 853 if (mimc->num_of_cmds == 0) 854 break; 855 if (mimc->num_of_cmds > MMC_IOC_MAX_CMDS) 856 return (EINVAL); 857 cnt = mimc->num_of_cmds; 858 size = sizeof(*mic) * cnt; 859 mic = malloc(size, M_TEMP, M_WAITOK); 860 err = copyin((const void *)mimc->cmds, mic, size); 861 if (err == 0) { 862 for (i = 0; i < cnt; i++) { 863 err = mmcsd_ioctl_cmd(part, &mic[i], fflag); 864 if (err != 0) 865 break; 866 } 867 } 868 free(mic, M_TEMP); 869 break; 870 default: 871 return (ENOIOCTL); 872 } 873 return (err); 874 } 875 876 static int 877 mmcsd_ioctl_cmd(struct mmcsd_part *part, struct mmc_ioc_cmd *mic, int fflag) 878 { 879 struct mmc_command cmd; 880 struct mmc_data data; 881 struct mmcsd_softc *sc; 882 device_t dev, mmcbus; 883 void *dp; 884 u_long len; 885 int err, retries; 886 uint32_t status; 887 uint16_t rca; 888 889 if ((fflag & FWRITE) == 0 && mic->write_flag != 0) 890 return (EBADF); 891 892 if (part->ro == TRUE && mic->write_flag != 0) 893 return (EROFS); 894 895 /* 896 * We don't need to explicitly lock against the disk(9) half of this 897 * driver as MMCBUS_ACQUIRE_BUS() will serialize us. However, it's 898 * necessary to protect against races with detachment and suspension, 899 * especially since it's required to switch away from RPMB partitions 900 * again after an access (see mmcsd_switch_part()). 901 */ 902 MMCSD_IOCTL_LOCK(part); 903 while (part->ioctl != 0) { 904 if (part->ioctl < 0) { 905 MMCSD_IOCTL_UNLOCK(part); 906 return (ENXIO); 907 } 908 msleep(part, &part->ioctl_mtx, 0, "mmcsd IOCTL", 0); 909 } 910 part->ioctl = 1; 911 MMCSD_IOCTL_UNLOCK(part); 912 913 err = 0; 914 dp = NULL; 915 len = mic->blksz * mic->blocks; 916 if (len > MMC_IOC_MAX_BYTES) { 917 err = EOVERFLOW; 918 goto out; 919 } 920 if (len != 0) { 921 dp = malloc(len, M_TEMP, M_WAITOK); 922 err = copyin((void *)(uintptr_t)mic->data_ptr, dp, len); 923 if (err != 0) 924 goto out; 925 } 926 memset(&cmd, 0, sizeof(cmd)); 927 memset(&data, 0, sizeof(data)); 928 cmd.opcode = mic->opcode; 929 cmd.arg = mic->arg; 930 cmd.flags = mic->flags; 931 if (len != 0) { 932 data.len = len; 933 data.data = dp; 934 data.flags = mic->write_flag != 0 ? MMC_DATA_WRITE : 935 MMC_DATA_READ; 936 cmd.data = &data; 937 } 938 sc = part->sc; 939 rca = sc->rca; 940 if (mic->is_acmd == 0) { 941 /* Enforce/patch/restrict RCA-based commands */ 942 switch (cmd.opcode) { 943 case MMC_SET_RELATIVE_ADDR: 944 case MMC_SELECT_CARD: 945 err = EPERM; 946 goto out; 947 case MMC_STOP_TRANSMISSION: 948 if ((cmd.arg & 0x1) == 0) 949 break; 950 /* FALLTHROUGH */ 951 case MMC_SLEEP_AWAKE: 952 case MMC_SEND_CSD: 953 case MMC_SEND_CID: 954 case MMC_SEND_STATUS: 955 case MMC_GO_INACTIVE_STATE: 956 case MMC_FAST_IO: 957 case MMC_APP_CMD: 958 cmd.arg = (cmd.arg & 0x0000FFFF) | (rca << 16); 959 break; 960 default: 961 break; 962 } 963 /* 964 * No partition switching in userland; it's almost impossible 965 * to recover from that, especially if things go wrong. 966 */ 967 if (cmd.opcode == MMC_SWITCH_FUNC && dp != NULL && 968 (((uint8_t *)dp)[EXT_CSD_PART_CONFIG] & 969 EXT_CSD_PART_CONFIG_ACC_MASK) != part->type) { 970 err = EINVAL; 971 goto out; 972 } 973 } 974 dev = sc->dev; 975 mmcbus = sc->mmcbus; 976 MMCBUS_ACQUIRE_BUS(mmcbus, dev); 977 err = mmcsd_switch_part(mmcbus, dev, rca, part->type); 978 if (err != MMC_ERR_NONE) 979 goto release; 980 if (part->type == EXT_CSD_PART_CONFIG_ACC_RPMB) { 981 err = mmcsd_set_blockcount(sc, mic->blocks, 982 mic->write_flag & (1 << 31)); 983 if (err != MMC_ERR_NONE) 984 goto switch_back; 985 } 986 if (mic->write_flag != 0) 987 sc->flags |= MMCSD_DIRTY; 988 if (mic->is_acmd != 0) 989 (void)mmc_wait_for_app_cmd(mmcbus, dev, rca, &cmd, 0); 990 else 991 (void)mmc_wait_for_cmd(mmcbus, dev, &cmd, 0); 992 if (part->type == EXT_CSD_PART_CONFIG_ACC_RPMB) { 993 /* 994 * If the request went to the RPMB partition, try to ensure 995 * that the command actually has completed. 996 */ 997 retries = MMCSD_CMD_RETRIES; 998 do { 999 err = mmc_send_status(mmcbus, dev, rca, &status); 1000 if (err != MMC_ERR_NONE) 1001 break; 1002 if (R1_STATUS(status) == 0 && 1003 R1_CURRENT_STATE(status) != R1_STATE_PRG) 1004 break; 1005 DELAY(1000); 1006 } while (retries-- > 0); 1007 } 1008 /* 1009 * If EXT_CSD was changed, our copy is outdated now. Specifically, 1010 * the upper bits of EXT_CSD_PART_CONFIG used in mmcsd_switch_part(), 1011 * so retrieve EXT_CSD again. 1012 */ 1013 if (cmd.opcode == MMC_SWITCH_FUNC) { 1014 err = mmc_send_ext_csd(mmcbus, dev, sc->ext_csd); 1015 if (err != MMC_ERR_NONE) 1016 goto release; 1017 } 1018 switch_back: 1019 if (part->type == EXT_CSD_PART_CONFIG_ACC_RPMB) { 1020 /* 1021 * If the request went to the RPMB partition, always switch 1022 * back to the default partition (see mmcsd_switch_part()). 1023 */ 1024 err = mmcsd_switch_part(mmcbus, dev, rca, 1025 EXT_CSD_PART_CONFIG_ACC_DEFAULT); 1026 if (err != MMC_ERR_NONE) 1027 goto release; 1028 } 1029 MMCBUS_RELEASE_BUS(mmcbus, dev); 1030 if (cmd.error != MMC_ERR_NONE) { 1031 switch (cmd.error) { 1032 case MMC_ERR_TIMEOUT: 1033 err = ETIMEDOUT; 1034 break; 1035 case MMC_ERR_BADCRC: 1036 err = EILSEQ; 1037 break; 1038 case MMC_ERR_INVALID: 1039 err = EINVAL; 1040 break; 1041 case MMC_ERR_NO_MEMORY: 1042 err = ENOMEM; 1043 break; 1044 default: 1045 err = EIO; 1046 break; 1047 } 1048 goto out; 1049 } 1050 memcpy(mic->response, cmd.resp, 4 * sizeof(uint32_t)); 1051 if (mic->write_flag == 0 && len != 0) { 1052 err = copyout(dp, (void *)(uintptr_t)mic->data_ptr, len); 1053 if (err != 0) 1054 goto out; 1055 } 1056 goto out; 1057 1058 release: 1059 MMCBUS_RELEASE_BUS(mmcbus, dev); 1060 err = EIO; 1061 1062 out: 1063 MMCSD_IOCTL_LOCK(part); 1064 part->ioctl = 0; 1065 MMCSD_IOCTL_UNLOCK(part); 1066 wakeup(part); 1067 if (dp != NULL) 1068 free(dp, M_TEMP); 1069 return (err); 1070 } 1071 1072 static int 1073 mmcsd_getattr(struct bio *bp) 1074 { 1075 struct mmcsd_part *part; 1076 device_t dev; 1077 1078 if (strcmp(bp->bio_attribute, "MMC::device") == 0) { 1079 if (bp->bio_length != sizeof(dev)) 1080 return (EFAULT); 1081 part = bp->bio_disk->d_drv1; 1082 dev = part->sc->dev; 1083 bcopy(&dev, bp->bio_data, sizeof(dev)); 1084 bp->bio_completed = bp->bio_length; 1085 return (0); 1086 } 1087 return (-1); 1088 } 1089 1090 static int 1091 mmcsd_set_blockcount(struct mmcsd_softc *sc, u_int count, bool reliable) 1092 { 1093 struct mmc_command cmd; 1094 struct mmc_request req; 1095 1096 memset(&req, 0, sizeof(req)); 1097 memset(&cmd, 0, sizeof(cmd)); 1098 cmd.mrq = &req; 1099 req.cmd = &cmd; 1100 cmd.opcode = MMC_SET_BLOCK_COUNT; 1101 cmd.arg = count & 0x0000FFFF; 1102 if (reliable) 1103 cmd.arg |= 1 << 31; 1104 cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; 1105 MMCBUS_WAIT_FOR_REQUEST(sc->mmcbus, sc->dev, &req); 1106 return (cmd.error); 1107 } 1108 1109 static int 1110 mmcsd_switch_part(device_t bus, device_t dev, uint16_t rca, u_int part) 1111 { 1112 struct mmcsd_softc *sc; 1113 int err; 1114 uint8_t value; 1115 1116 sc = device_get_softc(dev); 1117 1118 if (sc->mode == mode_sd) 1119 return (MMC_ERR_NONE); 1120 1121 /* 1122 * According to section "6.2.2 Command restrictions" of the eMMC 1123 * specification v5.1, CMD19/CMD21 aren't allowed to be used with 1124 * RPMB partitions. So we pause re-tuning along with triggering 1125 * it up-front to decrease the likelihood of re-tuning becoming 1126 * necessary while accessing an RPMB partition. Consequently, an 1127 * RPMB partition should immediately be switched away from again 1128 * after an access in order to allow for re-tuning to take place 1129 * anew. 1130 */ 1131 if (part == EXT_CSD_PART_CONFIG_ACC_RPMB) 1132 MMCBUS_RETUNE_PAUSE(sc->mmcbus, sc->dev, true); 1133 1134 if (sc->part_curr == part) 1135 return (MMC_ERR_NONE); 1136 1137 value = (sc->ext_csd[EXT_CSD_PART_CONFIG] & 1138 ~EXT_CSD_PART_CONFIG_ACC_MASK) | part; 1139 /* Jump! */ 1140 err = mmc_switch(bus, dev, rca, EXT_CSD_CMD_SET_NORMAL, 1141 EXT_CSD_PART_CONFIG, value, sc->part_time, true); 1142 if (err != MMC_ERR_NONE) { 1143 if (part == EXT_CSD_PART_CONFIG_ACC_RPMB) 1144 MMCBUS_RETUNE_UNPAUSE(sc->mmcbus, sc->dev); 1145 return (err); 1146 } 1147 1148 sc->ext_csd[EXT_CSD_PART_CONFIG] = value; 1149 if (sc->part_curr == EXT_CSD_PART_CONFIG_ACC_RPMB) 1150 MMCBUS_RETUNE_UNPAUSE(sc->mmcbus, sc->dev); 1151 sc->part_curr = part; 1152 return (MMC_ERR_NONE); 1153 } 1154 1155 static const char * 1156 mmcsd_errmsg(int e) 1157 { 1158 1159 if (e < 0 || e > MMC_ERR_MAX) 1160 return "Bad error code"; 1161 return (errmsg[e]); 1162 } 1163 1164 static daddr_t 1165 mmcsd_rw(struct mmcsd_part *part, struct bio *bp) 1166 { 1167 daddr_t block, end; 1168 struct mmc_command cmd; 1169 struct mmc_command stop; 1170 struct mmc_request req; 1171 struct mmc_data data; 1172 struct mmcsd_softc *sc; 1173 device_t dev, mmcbus; 1174 u_int numblocks, sz; 1175 char *vaddr; 1176 1177 sc = part->sc; 1178 dev = sc->dev; 1179 mmcbus = sc->mmcbus; 1180 1181 block = bp->bio_pblkno; 1182 sz = part->disk->d_sectorsize; 1183 end = bp->bio_pblkno + (bp->bio_bcount / sz); 1184 while (block < end) { 1185 vaddr = bp->bio_data + (block - bp->bio_pblkno) * sz; 1186 numblocks = min(end - block, sc->max_data); 1187 memset(&req, 0, sizeof(req)); 1188 memset(&cmd, 0, sizeof(cmd)); 1189 memset(&stop, 0, sizeof(stop)); 1190 memset(&data, 0, sizeof(data)); 1191 cmd.mrq = &req; 1192 req.cmd = &cmd; 1193 cmd.data = &data; 1194 if (bp->bio_cmd == BIO_READ) { 1195 if (numblocks > 1) 1196 cmd.opcode = MMC_READ_MULTIPLE_BLOCK; 1197 else 1198 cmd.opcode = MMC_READ_SINGLE_BLOCK; 1199 } else { 1200 sc->flags |= MMCSD_DIRTY; 1201 if (numblocks > 1) 1202 cmd.opcode = MMC_WRITE_MULTIPLE_BLOCK; 1203 else 1204 cmd.opcode = MMC_WRITE_BLOCK; 1205 } 1206 cmd.arg = block; 1207 if (sc->high_cap == 0) 1208 cmd.arg <<= 9; 1209 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC; 1210 data.data = vaddr; 1211 data.mrq = &req; 1212 if (bp->bio_cmd == BIO_READ) 1213 data.flags = MMC_DATA_READ; 1214 else 1215 data.flags = MMC_DATA_WRITE; 1216 data.len = numblocks * sz; 1217 if (numblocks > 1) { 1218 data.flags |= MMC_DATA_MULTI; 1219 stop.opcode = MMC_STOP_TRANSMISSION; 1220 stop.arg = 0; 1221 stop.flags = MMC_RSP_R1B | MMC_CMD_AC; 1222 stop.mrq = &req; 1223 req.stop = &stop; 1224 } 1225 MMCBUS_WAIT_FOR_REQUEST(mmcbus, dev, &req); 1226 if (req.cmd->error != MMC_ERR_NONE) { 1227 if (ppsratecheck(&sc->log_time, &sc->log_count, 1228 LOG_PPS)) 1229 device_printf(dev, "Error indicated: %d %s\n", 1230 req.cmd->error, 1231 mmcsd_errmsg(req.cmd->error)); 1232 break; 1233 } 1234 block += numblocks; 1235 } 1236 return (block); 1237 } 1238 1239 static daddr_t 1240 mmcsd_delete(struct mmcsd_part *part, struct bio *bp) 1241 { 1242 daddr_t block, end, start, stop; 1243 struct mmc_command cmd; 1244 struct mmc_request req; 1245 struct mmcsd_softc *sc; 1246 device_t dev, mmcbus; 1247 u_int erase_sector, sz; 1248 int err; 1249 bool use_trim; 1250 1251 sc = part->sc; 1252 dev = sc->dev; 1253 mmcbus = sc->mmcbus; 1254 1255 block = bp->bio_pblkno; 1256 sz = part->disk->d_sectorsize; 1257 end = bp->bio_pblkno + (bp->bio_bcount / sz); 1258 use_trim = sc->flags & MMCSD_USE_TRIM; 1259 if (use_trim == true) { 1260 start = block; 1261 stop = end; 1262 } else { 1263 /* Coalesce with the remainder of the previous request. */ 1264 if (block > part->eblock && block <= part->eend) 1265 block = part->eblock; 1266 if (end >= part->eblock && end < part->eend) 1267 end = part->eend; 1268 /* Safely round to the erase sector boundaries. */ 1269 erase_sector = sc->erase_sector; 1270 start = block + erase_sector - 1; /* Round up. */ 1271 start -= start % erase_sector; 1272 stop = end; /* Round down. */ 1273 stop -= end % erase_sector; 1274 /* 1275 * We can't erase an area smaller than an erase sector, so 1276 * store it for later. 1277 */ 1278 if (start >= stop) { 1279 part->eblock = block; 1280 part->eend = end; 1281 return (end); 1282 } 1283 } 1284 1285 if ((sc->flags & MMCSD_INAND_CMD38) != 0) { 1286 err = mmc_switch(mmcbus, dev, sc->rca, EXT_CSD_CMD_SET_NORMAL, 1287 EXT_CSD_INAND_CMD38, use_trim == true ? 1288 EXT_CSD_INAND_CMD38_TRIM : EXT_CSD_INAND_CMD38_ERASE, 1289 sc->cmd6_time, true); 1290 if (err != MMC_ERR_NONE) { 1291 device_printf(dev, 1292 "Setting iNAND erase command failed %s\n", 1293 mmcsd_errmsg(err)); 1294 return (block); 1295 } 1296 } 1297 1298 /* 1299 * Pause re-tuning so it won't interfere with the order of erase 1300 * commands. Note that these latter don't use the data lines, so 1301 * re-tuning shouldn't actually become necessary during erase. 1302 */ 1303 MMCBUS_RETUNE_PAUSE(mmcbus, dev, false); 1304 /* Set erase start position. */ 1305 memset(&req, 0, sizeof(req)); 1306 memset(&cmd, 0, sizeof(cmd)); 1307 cmd.mrq = &req; 1308 req.cmd = &cmd; 1309 if (sc->mode == mode_sd) 1310 cmd.opcode = SD_ERASE_WR_BLK_START; 1311 else 1312 cmd.opcode = MMC_ERASE_GROUP_START; 1313 cmd.arg = start; 1314 if (sc->high_cap == 0) 1315 cmd.arg <<= 9; 1316 cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; 1317 MMCBUS_WAIT_FOR_REQUEST(mmcbus, dev, &req); 1318 if (req.cmd->error != MMC_ERR_NONE) { 1319 device_printf(dev, "Setting erase start position failed %s\n", 1320 mmcsd_errmsg(req.cmd->error)); 1321 block = bp->bio_pblkno; 1322 goto unpause; 1323 } 1324 /* Set erase stop position. */ 1325 memset(&req, 0, sizeof(req)); 1326 memset(&cmd, 0, sizeof(cmd)); 1327 req.cmd = &cmd; 1328 if (sc->mode == mode_sd) 1329 cmd.opcode = SD_ERASE_WR_BLK_END; 1330 else 1331 cmd.opcode = MMC_ERASE_GROUP_END; 1332 cmd.arg = stop; 1333 if (sc->high_cap == 0) 1334 cmd.arg <<= 9; 1335 cmd.arg--; 1336 cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; 1337 MMCBUS_WAIT_FOR_REQUEST(mmcbus, dev, &req); 1338 if (req.cmd->error != MMC_ERR_NONE) { 1339 device_printf(dev, "Setting erase stop position failed %s\n", 1340 mmcsd_errmsg(req.cmd->error)); 1341 block = bp->bio_pblkno; 1342 goto unpause; 1343 } 1344 /* Erase range. */ 1345 memset(&req, 0, sizeof(req)); 1346 memset(&cmd, 0, sizeof(cmd)); 1347 req.cmd = &cmd; 1348 cmd.opcode = MMC_ERASE; 1349 cmd.arg = use_trim == true ? MMC_ERASE_TRIM : MMC_ERASE_ERASE; 1350 cmd.flags = MMC_RSP_R1B | MMC_CMD_AC; 1351 MMCBUS_WAIT_FOR_REQUEST(mmcbus, dev, &req); 1352 if (req.cmd->error != MMC_ERR_NONE) { 1353 device_printf(dev, "Issuing erase command failed %s\n", 1354 mmcsd_errmsg(req.cmd->error)); 1355 block = bp->bio_pblkno; 1356 goto unpause; 1357 } 1358 if (use_trim == false) { 1359 /* Store one of the remaining parts for the next call. */ 1360 if (bp->bio_pblkno >= part->eblock || block == start) { 1361 part->eblock = stop; /* Predict next forward. */ 1362 part->eend = end; 1363 } else { 1364 part->eblock = block; /* Predict next backward. */ 1365 part->eend = start; 1366 } 1367 } 1368 block = end; 1369 unpause: 1370 MMCBUS_RETUNE_UNPAUSE(mmcbus, dev); 1371 return (block); 1372 } 1373 1374 static int 1375 mmcsd_dump(void *arg, void *virtual, off_t offset, size_t length) 1376 { 1377 struct bio bp; 1378 daddr_t block, end; 1379 struct disk *disk; 1380 struct mmcsd_softc *sc; 1381 struct mmcsd_part *part; 1382 device_t dev, mmcbus; 1383 int err; 1384 1385 disk = arg; 1386 part = disk->d_drv1; 1387 sc = part->sc; 1388 1389 /* length zero is special and really means flush buffers to media */ 1390 if (length == 0) { 1391 err = mmcsd_flush_cache(sc); 1392 if (err != MMC_ERR_NONE) 1393 return (EIO); 1394 return (0); 1395 } 1396 1397 dev = sc->dev; 1398 mmcbus = sc->mmcbus; 1399 1400 g_reset_bio(&bp); 1401 bp.bio_disk = disk; 1402 bp.bio_pblkno = offset / disk->d_sectorsize; 1403 bp.bio_bcount = length; 1404 bp.bio_data = virtual; 1405 bp.bio_cmd = BIO_WRITE; 1406 end = bp.bio_pblkno + bp.bio_bcount / disk->d_sectorsize; 1407 MMCBUS_ACQUIRE_BUS(mmcbus, dev); 1408 err = mmcsd_switch_part(mmcbus, dev, sc->rca, part->type); 1409 if (err != MMC_ERR_NONE) { 1410 if (ppsratecheck(&sc->log_time, &sc->log_count, LOG_PPS)) 1411 device_printf(dev, "Partition switch error\n"); 1412 MMCBUS_RELEASE_BUS(mmcbus, dev); 1413 return (EIO); 1414 } 1415 block = mmcsd_rw(part, &bp); 1416 MMCBUS_RELEASE_BUS(mmcbus, dev); 1417 return ((end < block) ? EIO : 0); 1418 } 1419 1420 static void 1421 mmcsd_task(void *arg) 1422 { 1423 daddr_t block, end; 1424 struct mmcsd_part *part; 1425 struct mmcsd_softc *sc; 1426 struct bio *bp; 1427 device_t dev, mmcbus; 1428 int bio_error, err, sz; 1429 1430 part = arg; 1431 sc = part->sc; 1432 dev = sc->dev; 1433 mmcbus = sc->mmcbus; 1434 1435 while (1) { 1436 bio_error = 0; 1437 MMCSD_DISK_LOCK(part); 1438 do { 1439 if (part->running == 0) 1440 goto out; 1441 bp = bioq_takefirst(&part->bio_queue); 1442 if (bp == NULL) 1443 msleep(part, &part->disk_mtx, PRIBIO, 1444 "mmcsd disk jobqueue", 0); 1445 } while (bp == NULL); 1446 MMCSD_DISK_UNLOCK(part); 1447 if (__predict_false(bp->bio_cmd == BIO_FLUSH)) { 1448 if (mmcsd_flush_cache(sc) != MMC_ERR_NONE) { 1449 bp->bio_error = EIO; 1450 bp->bio_flags |= BIO_ERROR; 1451 } 1452 biodone(bp); 1453 continue; 1454 } 1455 if (bp->bio_cmd != BIO_READ && part->ro) { 1456 bp->bio_error = EROFS; 1457 bp->bio_resid = bp->bio_bcount; 1458 bp->bio_flags |= BIO_ERROR; 1459 biodone(bp); 1460 continue; 1461 } 1462 MMCBUS_ACQUIRE_BUS(mmcbus, dev); 1463 sz = part->disk->d_sectorsize; 1464 block = bp->bio_pblkno; 1465 end = bp->bio_pblkno + (bp->bio_bcount / sz); 1466 err = mmcsd_switch_part(mmcbus, dev, sc->rca, part->type); 1467 if (err != MMC_ERR_NONE) { 1468 if (ppsratecheck(&sc->log_time, &sc->log_count, 1469 LOG_PPS)) 1470 device_printf(dev, "Partition switch error\n"); 1471 goto release; 1472 } 1473 if (bp->bio_cmd == BIO_READ || bp->bio_cmd == BIO_WRITE) { 1474 /* Access to the remaining erase block obsoletes it. */ 1475 if (block < part->eend && end > part->eblock) 1476 part->eblock = part->eend = 0; 1477 block = mmcsd_rw(part, bp); 1478 } else if (bp->bio_cmd == BIO_DELETE) 1479 block = mmcsd_delete(part, bp); 1480 else 1481 bio_error = EOPNOTSUPP; 1482 release: 1483 MMCBUS_RELEASE_BUS(mmcbus, dev); 1484 if (block < end) { 1485 bp->bio_error = (bio_error == 0) ? EIO : bio_error; 1486 bp->bio_resid = (end - block) * sz; 1487 bp->bio_flags |= BIO_ERROR; 1488 } else 1489 bp->bio_resid = 0; 1490 biodone(bp); 1491 } 1492 out: 1493 /* tell parent we're done */ 1494 part->running = -1; 1495 MMCSD_DISK_UNLOCK(part); 1496 wakeup(part); 1497 1498 kproc_exit(0); 1499 } 1500 1501 static int 1502 mmcsd_bus_bit_width(device_t dev) 1503 { 1504 1505 if (mmc_get_bus_width(dev) == bus_width_1) 1506 return (1); 1507 if (mmc_get_bus_width(dev) == bus_width_4) 1508 return (4); 1509 return (8); 1510 } 1511 1512 static int 1513 mmcsd_flush_cache(struct mmcsd_softc *sc) 1514 { 1515 device_t dev, mmcbus; 1516 int err; 1517 1518 if ((sc->flags & MMCSD_FLUSH_CACHE) == 0) 1519 return (MMC_ERR_NONE); 1520 1521 dev = sc->dev; 1522 mmcbus = sc->mmcbus; 1523 MMCBUS_ACQUIRE_BUS(mmcbus, dev); 1524 if ((sc->flags & MMCSD_DIRTY) == 0) { 1525 MMCBUS_RELEASE_BUS(mmcbus, dev); 1526 return (MMC_ERR_NONE); 1527 } 1528 err = mmc_switch(mmcbus, dev, sc->rca, EXT_CSD_CMD_SET_NORMAL, 1529 EXT_CSD_FLUSH_CACHE, EXT_CSD_FLUSH_CACHE_FLUSH, 60 * 1000, true); 1530 if (err == MMC_ERR_NONE) 1531 sc->flags &= ~MMCSD_DIRTY; 1532 MMCBUS_RELEASE_BUS(mmcbus, dev); 1533 return (err); 1534 } 1535 1536 static device_method_t mmcsd_methods[] = { 1537 DEVMETHOD(device_probe, mmcsd_probe), 1538 DEVMETHOD(device_attach, mmcsd_attach), 1539 DEVMETHOD(device_detach, mmcsd_detach), 1540 DEVMETHOD(device_shutdown, mmcsd_shutdown), 1541 DEVMETHOD(device_suspend, mmcsd_suspend), 1542 DEVMETHOD(device_resume, mmcsd_resume), 1543 DEVMETHOD_END 1544 }; 1545 1546 static driver_t mmcsd_driver = { 1547 "mmcsd", 1548 mmcsd_methods, 1549 sizeof(struct mmcsd_softc), 1550 }; 1551 1552 static int 1553 mmcsd_handler(module_t mod __unused, int what, void *arg __unused) 1554 { 1555 1556 switch (what) { 1557 case MOD_LOAD: 1558 flash_register_slicer(mmcsd_slicer, FLASH_SLICES_TYPE_MMC, 1559 TRUE); 1560 return (0); 1561 case MOD_UNLOAD: 1562 flash_register_slicer(NULL, FLASH_SLICES_TYPE_MMC, TRUE); 1563 return (0); 1564 } 1565 return (0); 1566 } 1567 1568 DRIVER_MODULE(mmcsd, mmc, mmcsd_driver, mmcsd_handler, NULL); 1569 MODULE_DEPEND(mmcsd, g_flashmap, 0, 0, 0); 1570 MMC_DEPEND(mmcsd); 1571