1d2912cb1SThomas Gleixner // SPDX-License-Identifier: GPL-2.0-only 27ea239d9SPierre Ossman /* 370f10482SPierre Ossman * linux/drivers/mmc/core/mmc.c 47ea239d9SPierre Ossman * 57ea239d9SPierre Ossman * Copyright (C) 2003-2004 Russell King, All Rights Reserved. 67ea239d9SPierre Ossman * Copyright (C) 2005-2007 Pierre Ossman, All Rights Reserved. 77ea239d9SPierre Ossman * MMCv4 support Copyright (C) 2006 Philip Langdale, All Rights Reserved. 87ea239d9SPierre Ossman */ 97ea239d9SPierre Ossman 107ea239d9SPierre Ossman #include <linux/err.h> 1181f8a7beSHans de Goede #include <linux/of.h> 125a0e3ad6STejun Heo #include <linux/slab.h> 130205a904SPaul Gortmaker #include <linux/stat.h> 140cb403a2SUlf Hansson #include <linux/pm_runtime.h> 157ea239d9SPierre Ossman 167ea239d9SPierre Ossman #include <linux/mmc/host.h> 177ea239d9SPierre Ossman #include <linux/mmc/card.h> 187ea239d9SPierre Ossman #include <linux/mmc/mmc.h> 197ea239d9SPierre Ossman 207ea239d9SPierre Ossman #include "core.h" 214facdde1SUlf Hansson #include "card.h" 22436f8daaSAdrian Hunter #include "host.h" 234101c16aSPierre Ossman #include "bus.h" 247ea239d9SPierre Ossman #include "mmc_ops.h" 2528fc64afSShawn Lin #include "quirks.h" 264c4cb171SPhilip Rakity #include "sd_ops.h" 2752c8212dSUlf Hansson #include "pwrseq.h" 287ea239d9SPierre Ossman 29fe1b5700SUlf Hansson #define DEFAULT_CMD6_TIMEOUT_MS 500 30e3ae3401SUlf Hansson #define MIN_CACHE_EN_TIMEOUT_MS 1600 31fe1b5700SUlf Hansson 327ea239d9SPierre Ossman static const unsigned int tran_exp[] = { 337ea239d9SPierre Ossman 10000, 100000, 1000000, 10000000, 347ea239d9SPierre Ossman 0, 0, 0, 0 357ea239d9SPierre Ossman }; 367ea239d9SPierre Ossman 377ea239d9SPierre Ossman static const unsigned char tran_mant[] = { 387ea239d9SPierre Ossman 0, 10, 12, 13, 15, 20, 25, 30, 397ea239d9SPierre Ossman 35, 40, 45, 50, 55, 60, 70, 80, 407ea239d9SPierre Ossman }; 417ea239d9SPierre Ossman 424406ae21SShawn Lin static const unsigned int taac_exp[] = { 437ea239d9SPierre Ossman 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, 447ea239d9SPierre Ossman }; 457ea239d9SPierre Ossman 464406ae21SShawn Lin static const unsigned int taac_mant[] = { 477ea239d9SPierre Ossman 0, 10, 12, 13, 15, 20, 25, 30, 487ea239d9SPierre Ossman 35, 40, 45, 50, 55, 60, 70, 80, 497ea239d9SPierre Ossman }; 507ea239d9SPierre Ossman 517ea239d9SPierre Ossman #define UNSTUFF_BITS(resp,start,size) \ 527ea239d9SPierre Ossman ({ \ 537ea239d9SPierre Ossman const int __size = size; \ 547ea239d9SPierre Ossman const u32 __mask = (__size < 32 ? 1 << __size : 0) - 1; \ 557ea239d9SPierre Ossman const int __off = 3 - ((start) / 32); \ 567ea239d9SPierre Ossman const int __shft = (start) & 31; \ 577ea239d9SPierre Ossman u32 __res; \ 587ea239d9SPierre Ossman \ 597ea239d9SPierre Ossman __res = resp[__off] >> __shft; \ 607ea239d9SPierre Ossman if (__size + __shft > 32) \ 617ea239d9SPierre Ossman __res |= resp[__off-1] << ((32 - __shft) % 32); \ 627ea239d9SPierre Ossman __res & __mask; \ 637ea239d9SPierre Ossman }) 647ea239d9SPierre Ossman 657ea239d9SPierre Ossman /* 667ea239d9SPierre Ossman * Given the decoded CSD structure, decode the raw CID to our CID structure. 677ea239d9SPierre Ossman */ 68bd766312SPierre Ossman static int mmc_decode_cid(struct mmc_card *card) 697ea239d9SPierre Ossman { 707ea239d9SPierre Ossman u32 *resp = card->raw_cid; 717ea239d9SPierre Ossman 727ea239d9SPierre Ossman /* 737ea239d9SPierre Ossman * The selection of the format here is based upon published 747ea239d9SPierre Ossman * specs from sandisk and from what people have reported. 757ea239d9SPierre Ossman */ 767ea239d9SPierre Ossman switch (card->csd.mmca_vsn) { 777ea239d9SPierre Ossman case 0: /* MMC v1.0 - v1.2 */ 787ea239d9SPierre Ossman case 1: /* MMC v1.4 */ 797ea239d9SPierre Ossman card->cid.manfid = UNSTUFF_BITS(resp, 104, 24); 807ea239d9SPierre Ossman card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); 817ea239d9SPierre Ossman card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); 827ea239d9SPierre Ossman card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); 837ea239d9SPierre Ossman card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); 847ea239d9SPierre Ossman card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); 857ea239d9SPierre Ossman card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); 867ea239d9SPierre Ossman card->cid.prod_name[6] = UNSTUFF_BITS(resp, 48, 8); 877ea239d9SPierre Ossman card->cid.hwrev = UNSTUFF_BITS(resp, 44, 4); 887ea239d9SPierre Ossman card->cid.fwrev = UNSTUFF_BITS(resp, 40, 4); 897ea239d9SPierre Ossman card->cid.serial = UNSTUFF_BITS(resp, 16, 24); 907ea239d9SPierre Ossman card->cid.month = UNSTUFF_BITS(resp, 12, 4); 917ea239d9SPierre Ossman card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; 927ea239d9SPierre Ossman break; 937ea239d9SPierre Ossman 947ea239d9SPierre Ossman case 2: /* MMC v2.0 - v2.2 */ 957ea239d9SPierre Ossman case 3: /* MMC v3.1 - v3.3 */ 967ea239d9SPierre Ossman case 4: /* MMC v4 */ 977ea239d9SPierre Ossman card->cid.manfid = UNSTUFF_BITS(resp, 120, 8); 987ea239d9SPierre Ossman card->cid.oemid = UNSTUFF_BITS(resp, 104, 16); 997ea239d9SPierre Ossman card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); 1007ea239d9SPierre Ossman card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); 1017ea239d9SPierre Ossman card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); 1027ea239d9SPierre Ossman card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); 1037ea239d9SPierre Ossman card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); 1047ea239d9SPierre Ossman card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); 10551e7e8b6SBernie Thompson card->cid.prv = UNSTUFF_BITS(resp, 48, 8); 1067ea239d9SPierre Ossman card->cid.serial = UNSTUFF_BITS(resp, 16, 32); 1077ea239d9SPierre Ossman card->cid.month = UNSTUFF_BITS(resp, 12, 4); 1087ea239d9SPierre Ossman card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; 1097ea239d9SPierre Ossman break; 1107ea239d9SPierre Ossman 1117ea239d9SPierre Ossman default: 112a3c76eb9SGirish K S pr_err("%s: card has unknown MMCA version %d\n", 1137ea239d9SPierre Ossman mmc_hostname(card->host), card->csd.mmca_vsn); 114bd766312SPierre Ossman return -EINVAL; 1157ea239d9SPierre Ossman } 116bd766312SPierre Ossman 117bd766312SPierre Ossman return 0; 1187ea239d9SPierre Ossman } 1197ea239d9SPierre Ossman 120dfe86cbaSAdrian Hunter static void mmc_set_erase_size(struct mmc_card *card) 121dfe86cbaSAdrian Hunter { 122dfe86cbaSAdrian Hunter if (card->ext_csd.erase_group_def & 1) 123dfe86cbaSAdrian Hunter card->erase_size = card->ext_csd.hc_erase_size; 124dfe86cbaSAdrian Hunter else 125dfe86cbaSAdrian Hunter card->erase_size = card->csd.erase_size; 126dfe86cbaSAdrian Hunter 127dfe86cbaSAdrian Hunter mmc_init_erase(card); 128dfe86cbaSAdrian Hunter } 129dfe86cbaSAdrian Hunter 1307ea239d9SPierre Ossman /* 1317ea239d9SPierre Ossman * Given a 128-bit response, decode to our card CSD structure. 1327ea239d9SPierre Ossman */ 133bd766312SPierre Ossman static int mmc_decode_csd(struct mmc_card *card) 1347ea239d9SPierre Ossman { 1357ea239d9SPierre Ossman struct mmc_csd *csd = &card->csd; 136dfe86cbaSAdrian Hunter unsigned int e, m, a, b; 1377ea239d9SPierre Ossman u32 *resp = card->raw_csd; 1387ea239d9SPierre Ossman 1397ea239d9SPierre Ossman /* 1407ea239d9SPierre Ossman * We only understand CSD structure v1.1 and v1.2. 1417ea239d9SPierre Ossman * v1.2 has extra information in bits 15, 11 and 10. 1426da24b78SKyungmin Park * We also support eMMC v4.4 & v4.41. 1437ea239d9SPierre Ossman */ 1446da24b78SKyungmin Park csd->structure = UNSTUFF_BITS(resp, 126, 2); 1456da24b78SKyungmin Park if (csd->structure == 0) { 146a3c76eb9SGirish K S pr_err("%s: unrecognised CSD structure version %d\n", 1476da24b78SKyungmin Park mmc_hostname(card->host), csd->structure); 148bd766312SPierre Ossman return -EINVAL; 1497ea239d9SPierre Ossman } 1507ea239d9SPierre Ossman 1517ea239d9SPierre Ossman csd->mmca_vsn = UNSTUFF_BITS(resp, 122, 4); 1527ea239d9SPierre Ossman m = UNSTUFF_BITS(resp, 115, 4); 1537ea239d9SPierre Ossman e = UNSTUFF_BITS(resp, 112, 3); 1544406ae21SShawn Lin csd->taac_ns = (taac_exp[e] * taac_mant[m] + 9) / 10; 1554406ae21SShawn Lin csd->taac_clks = UNSTUFF_BITS(resp, 104, 8) * 100; 1567ea239d9SPierre Ossman 1577ea239d9SPierre Ossman m = UNSTUFF_BITS(resp, 99, 4); 1587ea239d9SPierre Ossman e = UNSTUFF_BITS(resp, 96, 3); 1597ea239d9SPierre Ossman csd->max_dtr = tran_exp[e] * tran_mant[m]; 1607ea239d9SPierre Ossman csd->cmdclass = UNSTUFF_BITS(resp, 84, 12); 1617ea239d9SPierre Ossman 1627ea239d9SPierre Ossman e = UNSTUFF_BITS(resp, 47, 3); 1637ea239d9SPierre Ossman m = UNSTUFF_BITS(resp, 62, 12); 1647ea239d9SPierre Ossman csd->capacity = (1 + m) << (e + 2); 1657ea239d9SPierre Ossman 1667ea239d9SPierre Ossman csd->read_blkbits = UNSTUFF_BITS(resp, 80, 4); 1677ea239d9SPierre Ossman csd->read_partial = UNSTUFF_BITS(resp, 79, 1); 1687ea239d9SPierre Ossman csd->write_misalign = UNSTUFF_BITS(resp, 78, 1); 1697ea239d9SPierre Ossman csd->read_misalign = UNSTUFF_BITS(resp, 77, 1); 1703d705d14SSascha Hauer csd->dsr_imp = UNSTUFF_BITS(resp, 76, 1); 1717ea239d9SPierre Ossman csd->r2w_factor = UNSTUFF_BITS(resp, 26, 3); 1727ea239d9SPierre Ossman csd->write_blkbits = UNSTUFF_BITS(resp, 22, 4); 1737ea239d9SPierre Ossman csd->write_partial = UNSTUFF_BITS(resp, 21, 1); 174bd766312SPierre Ossman 175dfe86cbaSAdrian Hunter if (csd->write_blkbits >= 9) { 176dfe86cbaSAdrian Hunter a = UNSTUFF_BITS(resp, 42, 5); 177dfe86cbaSAdrian Hunter b = UNSTUFF_BITS(resp, 37, 5); 178dfe86cbaSAdrian Hunter csd->erase_size = (a + 1) * (b + 1); 179dfe86cbaSAdrian Hunter csd->erase_size <<= csd->write_blkbits - 9; 180dfe86cbaSAdrian Hunter } 181dfe86cbaSAdrian Hunter 182bd766312SPierre Ossman return 0; 1837ea239d9SPierre Ossman } 1847ea239d9SPierre Ossman 18596cf5f02SSeungwon Jeon static void mmc_select_card_type(struct mmc_card *card) 18696cf5f02SSeungwon Jeon { 18796cf5f02SSeungwon Jeon struct mmc_host *host = card->host; 1880a5b6438SSeungwon Jeon u8 card_type = card->ext_csd.raw_card_type; 1895f1a4dd0SLee Jones u32 caps = host->caps, caps2 = host->caps2; 190577fb131SSeungwon Jeon unsigned int hs_max_dtr = 0, hs200_max_dtr = 0; 1912415c0efSSeungwon Jeon unsigned int avail_type = 0; 19296cf5f02SSeungwon Jeon 19396cf5f02SSeungwon Jeon if (caps & MMC_CAP_MMC_HIGHSPEED && 1942415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS_26) { 1952415c0efSSeungwon Jeon hs_max_dtr = MMC_HIGH_26_MAX_DTR; 1962415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS_26; 1972415c0efSSeungwon Jeon } 1982415c0efSSeungwon Jeon 1992415c0efSSeungwon Jeon if (caps & MMC_CAP_MMC_HIGHSPEED && 2002415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS_52) { 20196cf5f02SSeungwon Jeon hs_max_dtr = MMC_HIGH_52_MAX_DTR; 2022415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS_52; 2032415c0efSSeungwon Jeon } 20496cf5f02SSeungwon Jeon 20520f921bbSUlf Hansson if (caps & (MMC_CAP_1_8V_DDR | MMC_CAP_3_3V_DDR) && 2062415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_DDR_1_8V) { 20796cf5f02SSeungwon Jeon hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; 2082415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_DDR_1_8V; 2092415c0efSSeungwon Jeon } 21096cf5f02SSeungwon Jeon 2112415c0efSSeungwon Jeon if (caps & MMC_CAP_1_2V_DDR && 2122415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_DDR_1_2V) { 2132415c0efSSeungwon Jeon hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; 2142415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_DDR_1_2V; 2152415c0efSSeungwon Jeon } 2162415c0efSSeungwon Jeon 2172415c0efSSeungwon Jeon if (caps2 & MMC_CAP2_HS200_1_8V_SDR && 2182415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS200_1_8V) { 219577fb131SSeungwon Jeon hs200_max_dtr = MMC_HS200_MAX_DTR; 2202415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS200_1_8V; 2212415c0efSSeungwon Jeon } 2222415c0efSSeungwon Jeon 2232415c0efSSeungwon Jeon if (caps2 & MMC_CAP2_HS200_1_2V_SDR && 2242415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS200_1_2V) { 225577fb131SSeungwon Jeon hs200_max_dtr = MMC_HS200_MAX_DTR; 2262415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS200_1_2V; 2272415c0efSSeungwon Jeon } 22896cf5f02SSeungwon Jeon 2290a5b6438SSeungwon Jeon if (caps2 & MMC_CAP2_HS400_1_8V && 2300a5b6438SSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS400_1_8V) { 2310a5b6438SSeungwon Jeon hs200_max_dtr = MMC_HS200_MAX_DTR; 2320a5b6438SSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS400_1_8V; 2330a5b6438SSeungwon Jeon } 2340a5b6438SSeungwon Jeon 2350a5b6438SSeungwon Jeon if (caps2 & MMC_CAP2_HS400_1_2V && 2360a5b6438SSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS400_1_2V) { 2370a5b6438SSeungwon Jeon hs200_max_dtr = MMC_HS200_MAX_DTR; 2380a5b6438SSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS400_1_2V; 2390a5b6438SSeungwon Jeon } 2400a5b6438SSeungwon Jeon 24181ac2af6SShawn Lin if ((caps2 & MMC_CAP2_HS400_ES) && 24281ac2af6SShawn Lin card->ext_csd.strobe_support && 24381ac2af6SShawn Lin (avail_type & EXT_CSD_CARD_TYPE_HS400)) 24481ac2af6SShawn Lin avail_type |= EXT_CSD_CARD_TYPE_HS400ES; 24581ac2af6SShawn Lin 24696cf5f02SSeungwon Jeon card->ext_csd.hs_max_dtr = hs_max_dtr; 247577fb131SSeungwon Jeon card->ext_csd.hs200_max_dtr = hs200_max_dtr; 2482415c0efSSeungwon Jeon card->mmc_avail_type = avail_type; 24996cf5f02SSeungwon Jeon } 25096cf5f02SSeungwon Jeon 251b4493eeaSGrégory Soutadé static void mmc_manage_enhanced_area(struct mmc_card *card, u8 *ext_csd) 252b4493eeaSGrégory Soutadé { 253994324bbSGrégory Soutadé u8 hc_erase_grp_sz, hc_wp_grp_sz; 254994324bbSGrégory Soutadé 255994324bbSGrégory Soutadé /* 256994324bbSGrégory Soutadé * Disable these attributes by default 257994324bbSGrégory Soutadé */ 258994324bbSGrégory Soutadé card->ext_csd.enhanced_area_offset = -EINVAL; 259994324bbSGrégory Soutadé card->ext_csd.enhanced_area_size = -EINVAL; 260b4493eeaSGrégory Soutadé 261b4493eeaSGrégory Soutadé /* 262b4493eeaSGrégory Soutadé * Enhanced area feature support -- check whether the eMMC 263b4493eeaSGrégory Soutadé * card has the Enhanced area enabled. If so, export enhanced 264b4493eeaSGrégory Soutadé * area offset and size to user by adding sysfs interface. 265b4493eeaSGrégory Soutadé */ 266b4493eeaSGrégory Soutadé if ((ext_csd[EXT_CSD_PARTITION_SUPPORT] & 0x2) && 267b4493eeaSGrégory Soutadé (ext_csd[EXT_CSD_PARTITION_ATTRIBUTE] & 0x1)) { 268994324bbSGrégory Soutadé if (card->ext_csd.partition_setting_completed) { 269b4493eeaSGrégory Soutadé hc_erase_grp_sz = 270b4493eeaSGrégory Soutadé ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 271b4493eeaSGrégory Soutadé hc_wp_grp_sz = 272b4493eeaSGrégory Soutadé ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 273b4493eeaSGrégory Soutadé 274b4493eeaSGrégory Soutadé /* 275b4493eeaSGrégory Soutadé * calculate the enhanced data area offset, in bytes 276b4493eeaSGrégory Soutadé */ 277b4493eeaSGrégory Soutadé card->ext_csd.enhanced_area_offset = 278ded8a5f9SKuninori Morimoto (((unsigned long long)ext_csd[139]) << 24) + 279ded8a5f9SKuninori Morimoto (((unsigned long long)ext_csd[138]) << 16) + 280ded8a5f9SKuninori Morimoto (((unsigned long long)ext_csd[137]) << 8) + 281ded8a5f9SKuninori Morimoto (((unsigned long long)ext_csd[136])); 282b4493eeaSGrégory Soutadé if (mmc_card_blockaddr(card)) 283b4493eeaSGrégory Soutadé card->ext_csd.enhanced_area_offset <<= 9; 284b4493eeaSGrégory Soutadé /* 285b4493eeaSGrégory Soutadé * calculate the enhanced data area size, in kilobytes 286b4493eeaSGrégory Soutadé */ 287b4493eeaSGrégory Soutadé card->ext_csd.enhanced_area_size = 288b4493eeaSGrégory Soutadé (ext_csd[142] << 16) + (ext_csd[141] << 8) + 289b4493eeaSGrégory Soutadé ext_csd[140]; 290b4493eeaSGrégory Soutadé card->ext_csd.enhanced_area_size *= 291b4493eeaSGrégory Soutadé (size_t)(hc_erase_grp_sz * hc_wp_grp_sz); 292b4493eeaSGrégory Soutadé card->ext_csd.enhanced_area_size <<= 9; 293b4493eeaSGrégory Soutadé } else { 294994324bbSGrégory Soutadé pr_warn("%s: defines enhanced area without partition setting complete\n", 295994324bbSGrégory Soutadé mmc_hostname(card->host)); 296994324bbSGrégory Soutadé } 297b4493eeaSGrégory Soutadé } 298b4493eeaSGrégory Soutadé } 299b4493eeaSGrégory Soutadé 300f3d7c229SBradley Bolen static void mmc_part_add(struct mmc_card *card, u64 size, 3014facdde1SUlf Hansson unsigned int part_cfg, char *name, int idx, bool ro, 3024facdde1SUlf Hansson int area_type) 3034facdde1SUlf Hansson { 3044facdde1SUlf Hansson card->part[card->nr_parts].size = size; 3054facdde1SUlf Hansson card->part[card->nr_parts].part_cfg = part_cfg; 3064facdde1SUlf Hansson sprintf(card->part[card->nr_parts].name, name, idx); 3074facdde1SUlf Hansson card->part[card->nr_parts].force_ro = ro; 3084facdde1SUlf Hansson card->part[card->nr_parts].area_type = area_type; 3094facdde1SUlf Hansson card->nr_parts++; 3104facdde1SUlf Hansson } 3114facdde1SUlf Hansson 312b4493eeaSGrégory Soutadé static void mmc_manage_gp_partitions(struct mmc_card *card, u8 *ext_csd) 313b4493eeaSGrégory Soutadé { 314b4493eeaSGrégory Soutadé int idx; 315994324bbSGrégory Soutadé u8 hc_erase_grp_sz, hc_wp_grp_sz; 316f3d7c229SBradley Bolen u64 part_size; 317b4493eeaSGrégory Soutadé 318b4493eeaSGrégory Soutadé /* 319b4493eeaSGrégory Soutadé * General purpose partition feature support -- 320b4493eeaSGrégory Soutadé * If ext_csd has the size of general purpose partitions, 321b4493eeaSGrégory Soutadé * set size, part_cfg, partition name in mmc_part. 322b4493eeaSGrégory Soutadé */ 323b4493eeaSGrégory Soutadé if (ext_csd[EXT_CSD_PARTITION_SUPPORT] & 324b4493eeaSGrégory Soutadé EXT_CSD_PART_SUPPORT_PART_EN) { 325b4493eeaSGrégory Soutadé hc_erase_grp_sz = 326b4493eeaSGrégory Soutadé ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 327b4493eeaSGrégory Soutadé hc_wp_grp_sz = 328b4493eeaSGrégory Soutadé ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 329b4493eeaSGrégory Soutadé 330b4493eeaSGrégory Soutadé for (idx = 0; idx < MMC_NUM_GP_PARTITION; idx++) { 331b4493eeaSGrégory Soutadé if (!ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3] && 332b4493eeaSGrégory Soutadé !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] && 333b4493eeaSGrégory Soutadé !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2]) 334b4493eeaSGrégory Soutadé continue; 335994324bbSGrégory Soutadé if (card->ext_csd.partition_setting_completed == 0) { 336994324bbSGrégory Soutadé pr_warn("%s: has partition size defined without partition complete\n", 337994324bbSGrégory Soutadé mmc_hostname(card->host)); 338994324bbSGrégory Soutadé break; 339994324bbSGrégory Soutadé } 340b4493eeaSGrégory Soutadé part_size = 341b4493eeaSGrégory Soutadé (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2] 342b4493eeaSGrégory Soutadé << 16) + 343b4493eeaSGrégory Soutadé (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] 344b4493eeaSGrégory Soutadé << 8) + 345b4493eeaSGrégory Soutadé ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3]; 346f3d7c229SBradley Bolen part_size *= (hc_erase_grp_sz * hc_wp_grp_sz); 347b4493eeaSGrégory Soutadé mmc_part_add(card, part_size << 19, 348b4493eeaSGrégory Soutadé EXT_CSD_PART_CONFIG_ACC_GP0 + idx, 349b4493eeaSGrégory Soutadé "gp%d", idx, false, 350b4493eeaSGrégory Soutadé MMC_BLK_DATA_AREA_GP); 351b4493eeaSGrégory Soutadé } 352b4493eeaSGrégory Soutadé } 353b4493eeaSGrégory Soutadé } 354b4493eeaSGrégory Soutadé 3551c447116SAdrian Hunter /* Minimum partition switch timeout in milliseconds */ 3561c447116SAdrian Hunter #define MMC_MIN_PART_SWITCH_TIME 300 3571c447116SAdrian Hunter 35808ee80ccSPhilip Rakity /* 35908ee80ccSPhilip Rakity * Decode extended CSD. 36008ee80ccSPhilip Rakity */ 361076ec38aSUlf Hansson static int mmc_decode_ext_csd(struct mmc_card *card, u8 *ext_csd) 36208ee80ccSPhilip Rakity { 363e0c368d5SNamjae Jeon int err = 0, idx; 364f3d7c229SBradley Bolen u64 part_size; 36581f8a7beSHans de Goede struct device_node *np; 36681f8a7beSHans de Goede bool broken_hpi = false; 36708ee80ccSPhilip Rakity 3686da24b78SKyungmin Park /* Version is coded in the CSD_STRUCTURE byte in the EXT_CSD register */ 369f39b2dd9SPhilip Rakity card->ext_csd.raw_ext_csd_structure = ext_csd[EXT_CSD_STRUCTURE]; 3706da24b78SKyungmin Park if (card->csd.structure == 3) { 371f39b2dd9SPhilip Rakity if (card->ext_csd.raw_ext_csd_structure > 2) { 372a3c76eb9SGirish K S pr_err("%s: unrecognised EXT_CSD structure " 3738fdd8521SPierre Ossman "version %d\n", mmc_hostname(card->host), 374f39b2dd9SPhilip Rakity card->ext_csd.raw_ext_csd_structure); 3756da24b78SKyungmin Park err = -EINVAL; 3766da24b78SKyungmin Park goto out; 3776da24b78SKyungmin Park } 3786da24b78SKyungmin Park } 3796da24b78SKyungmin Park 38081f8a7beSHans de Goede np = mmc_of_find_child_device(card->host, 0); 38181f8a7beSHans de Goede if (np && of_device_is_compatible(np, "mmc-card")) 38281f8a7beSHans de Goede broken_hpi = of_property_read_bool(np, "broken-hpi"); 38381f8a7beSHans de Goede of_node_put(np); 38481f8a7beSHans de Goede 38503a59437SRomain Izard /* 38603a59437SRomain Izard * The EXT_CSD format is meant to be forward compatible. As long 38703a59437SRomain Izard * as CSD_STRUCTURE does not change, all values for EXT_CSD_REV 38803a59437SRomain Izard * are authorized, see JEDEC JESD84-B50 section B.8. 38903a59437SRomain Izard */ 3906da24b78SKyungmin Park card->ext_csd.rev = ext_csd[EXT_CSD_REV]; 391d7604d76SPierre Ossman 3925320226aSPratibhasagar V /* fixup device after ext_csd revision field is updated */ 3935320226aSPratibhasagar V mmc_fixup_device(card, mmc_ext_csd_fixups); 3945320226aSPratibhasagar V 395f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[0] = ext_csd[EXT_CSD_SEC_CNT + 0]; 396f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[1] = ext_csd[EXT_CSD_SEC_CNT + 1]; 397f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[2] = ext_csd[EXT_CSD_SEC_CNT + 2]; 398f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[3] = ext_csd[EXT_CSD_SEC_CNT + 3]; 399b1ebe384SJarkko Lavinen if (card->ext_csd.rev >= 2) { 4007ea239d9SPierre Ossman card->ext_csd.sectors = 4017ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 0] << 0 | 4027ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 1] << 8 | 4037ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 2] << 16 | 4047ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 3] << 24; 405fc8a0985SHanumath Prasad 406fc8a0985SHanumath Prasad /* Cards with density > 2GiB are sector addressed */ 407fc8a0985SHanumath Prasad if (card->ext_csd.sectors > (2u * 1024 * 1024 * 1024) / 512) 4087ea239d9SPierre Ossman mmc_card_set_blockaddr(card); 409d7604d76SPierre Ossman } 41096cf5f02SSeungwon Jeon 41181ac2af6SShawn Lin card->ext_csd.strobe_support = ext_csd[EXT_CSD_STROBE_SUPPORT]; 412f39b2dd9SPhilip Rakity card->ext_csd.raw_card_type = ext_csd[EXT_CSD_CARD_TYPE]; 41396cf5f02SSeungwon Jeon mmc_select_card_type(card); 4147ea239d9SPierre Ossman 415f39b2dd9SPhilip Rakity card->ext_csd.raw_s_a_timeout = ext_csd[EXT_CSD_S_A_TIMEOUT]; 416f39b2dd9SPhilip Rakity card->ext_csd.raw_erase_timeout_mult = 417f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; 418f39b2dd9SPhilip Rakity card->ext_csd.raw_hc_erase_grp_size = 419f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 420b1ebe384SJarkko Lavinen if (card->ext_csd.rev >= 3) { 421b1ebe384SJarkko Lavinen u8 sa_shift = ext_csd[EXT_CSD_S_A_TIMEOUT]; 422371a689fSAndrei Warkentin card->ext_csd.part_config = ext_csd[EXT_CSD_PART_CONFIG]; 423371a689fSAndrei Warkentin 424371a689fSAndrei Warkentin /* EXT_CSD value is in units of 10ms, but we store in ms */ 425371a689fSAndrei Warkentin card->ext_csd.part_time = 10 * ext_csd[EXT_CSD_PART_SWITCH_TIME]; 4261c447116SAdrian Hunter /* Some eMMC set the value too low so set a minimum */ 4271c447116SAdrian Hunter if (card->ext_csd.part_time && 4281c447116SAdrian Hunter card->ext_csd.part_time < MMC_MIN_PART_SWITCH_TIME) 4291c447116SAdrian Hunter card->ext_csd.part_time = MMC_MIN_PART_SWITCH_TIME; 430b1ebe384SJarkko Lavinen 431b1ebe384SJarkko Lavinen /* Sleep / awake timeout in 100ns units */ 432b1ebe384SJarkko Lavinen if (sa_shift > 0 && sa_shift <= 0x17) 433b1ebe384SJarkko Lavinen card->ext_csd.sa_timeout = 434b1ebe384SJarkko Lavinen 1 << ext_csd[EXT_CSD_S_A_TIMEOUT]; 435dfe86cbaSAdrian Hunter card->ext_csd.erase_group_def = 436dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_ERASE_GROUP_DEF]; 437dfe86cbaSAdrian Hunter card->ext_csd.hc_erase_timeout = 300 * 438dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; 439dfe86cbaSAdrian Hunter card->ext_csd.hc_erase_size = 440dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] << 10; 441f4c5522bSAndrei Warkentin 442f4c5522bSAndrei Warkentin card->ext_csd.rel_sectors = ext_csd[EXT_CSD_REL_WR_SEC_C]; 443371a689fSAndrei Warkentin 444371a689fSAndrei Warkentin /* 445371a689fSAndrei Warkentin * There are two boot regions of equal size, defined in 446371a689fSAndrei Warkentin * multiples of 128K. 447371a689fSAndrei Warkentin */ 448e0c368d5SNamjae Jeon if (ext_csd[EXT_CSD_BOOT_MULT] && mmc_boot_partition_access(card->host)) { 449e0c368d5SNamjae Jeon for (idx = 0; idx < MMC_NUM_BOOT_PARTITION; idx++) { 450e0c368d5SNamjae Jeon part_size = ext_csd[EXT_CSD_BOOT_MULT] << 17; 451e0c368d5SNamjae Jeon mmc_part_add(card, part_size, 452e0c368d5SNamjae Jeon EXT_CSD_PART_CONFIG_ACC_BOOT0 + idx, 453add710eaSJohan Rudholm "boot%d", idx, true, 454add710eaSJohan Rudholm MMC_BLK_DATA_AREA_BOOT); 455e0c368d5SNamjae Jeon } 456e0c368d5SNamjae Jeon } 457b1ebe384SJarkko Lavinen } 458b1ebe384SJarkko Lavinen 459f39b2dd9SPhilip Rakity card->ext_csd.raw_hc_erase_gap_size = 460dd13b4edSJurgen Heeks ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 461f39b2dd9SPhilip Rakity card->ext_csd.raw_sec_trim_mult = 462f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_SEC_TRIM_MULT]; 463f39b2dd9SPhilip Rakity card->ext_csd.raw_sec_erase_mult = 464f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_SEC_ERASE_MULT]; 465f39b2dd9SPhilip Rakity card->ext_csd.raw_sec_feature_support = 466f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; 467f39b2dd9SPhilip Rakity card->ext_csd.raw_trim_mult = 468f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_TRIM_MULT]; 469836dc2feSPhilip Rakity card->ext_csd.raw_partition_support = ext_csd[EXT_CSD_PARTITION_SUPPORT]; 470b097e07fSAdrian Hunter card->ext_csd.raw_driver_strength = ext_csd[EXT_CSD_DRIVER_STRENGTH]; 471dfe86cbaSAdrian Hunter if (card->ext_csd.rev >= 4) { 47269803d4fSGrégory Soutadé if (ext_csd[EXT_CSD_PARTITION_SETTING_COMPLETED] & 47369803d4fSGrégory Soutadé EXT_CSD_PART_SETTING_COMPLETED) 47469803d4fSGrégory Soutadé card->ext_csd.partition_setting_completed = 1; 47569803d4fSGrégory Soutadé else 47669803d4fSGrégory Soutadé card->ext_csd.partition_setting_completed = 0; 47769803d4fSGrégory Soutadé 478b4493eeaSGrégory Soutadé mmc_manage_enhanced_area(card, ext_csd); 479709de99dSChuanxiao Dong 480b4493eeaSGrégory Soutadé mmc_manage_gp_partitions(card, ext_csd); 481e0c368d5SNamjae Jeon 482dfe86cbaSAdrian Hunter card->ext_csd.sec_trim_mult = 483dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_SEC_TRIM_MULT]; 484dfe86cbaSAdrian Hunter card->ext_csd.sec_erase_mult = 485dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_SEC_ERASE_MULT]; 486dfe86cbaSAdrian Hunter card->ext_csd.sec_feature_support = 487dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; 488dfe86cbaSAdrian Hunter card->ext_csd.trim_timeout = 300 * 489dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_TRIM_MULT]; 490add710eaSJohan Rudholm 491add710eaSJohan Rudholm /* 492add710eaSJohan Rudholm * Note that the call to mmc_part_add above defaults to read 493add710eaSJohan Rudholm * only. If this default assumption is changed, the call must 494add710eaSJohan Rudholm * take into account the value of boot_locked below. 495add710eaSJohan Rudholm */ 496add710eaSJohan Rudholm card->ext_csd.boot_ro_lock = ext_csd[EXT_CSD_BOOT_WP]; 497add710eaSJohan Rudholm card->ext_csd.boot_ro_lockable = true; 49860443712SFredrik Soderstedt 49960443712SFredrik Soderstedt /* Save power class values */ 50060443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_52_195 = 50160443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_52_195]; 50260443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_26_195 = 50360443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_26_195]; 50460443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_52_360 = 50560443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_52_360]; 50660443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_26_360 = 50760443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_26_360]; 50860443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_200_195 = 50960443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_200_195]; 51060443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_200_360 = 51160443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_200_360]; 51260443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_ddr_52_195 = 51360443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_DDR_52_195]; 51460443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_ddr_52_360 = 51560443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_DDR_52_360]; 5160a5b6438SSeungwon Jeon card->ext_csd.raw_pwr_cl_ddr_200_360 = 5170a5b6438SSeungwon Jeon ext_csd[EXT_CSD_PWR_CL_DDR_200_360]; 518dfe86cbaSAdrian Hunter } 519dfe86cbaSAdrian Hunter 520b2499518SAdrian Hunter if (card->ext_csd.rev >= 5) { 5217c4f10acSRomain Izard /* Adjust production date as per JEDEC JESD84-B451 */ 5227c4f10acSRomain Izard if (card->cid.year < 2010) 5237c4f10acSRomain Izard card->cid.year += 16; 5247c4f10acSRomain Izard 525950d56acSJaehoon Chung /* check whether the eMMC card supports BKOPS */ 526ba9f39a7SUlf Hansson if (ext_csd[EXT_CSD_BKOPS_SUPPORT] & 0x1) { 527950d56acSJaehoon Chung card->ext_csd.bkops = 1; 5280501be64SAlexey Skidanov card->ext_csd.man_bkops_en = 5290501be64SAlexey Skidanov (ext_csd[EXT_CSD_BKOPS_EN] & 5300501be64SAlexey Skidanov EXT_CSD_MANUAL_BKOPS_MASK); 531950d56acSJaehoon Chung card->ext_csd.raw_bkops_status = 532950d56acSJaehoon Chung ext_csd[EXT_CSD_BKOPS_STATUS]; 5336962c2fbSUri Yanai if (card->ext_csd.man_bkops_en) 5346962c2fbSUri Yanai pr_debug("%s: MAN_BKOPS_EN bit is set\n", 535950d56acSJaehoon Chung mmc_hostname(card->host)); 536efff8e78SUri Yanai card->ext_csd.auto_bkops_en = 537efff8e78SUri Yanai (ext_csd[EXT_CSD_BKOPS_EN] & 538efff8e78SUri Yanai EXT_CSD_AUTO_BKOPS_MASK); 539efff8e78SUri Yanai if (card->ext_csd.auto_bkops_en) 540efff8e78SUri Yanai pr_debug("%s: AUTO_BKOPS_EN bit is set\n", 541efff8e78SUri Yanai mmc_hostname(card->host)); 542950d56acSJaehoon Chung } 543950d56acSJaehoon Chung 544eb0d8f13SJaehoon Chung /* check whether the eMMC card supports HPI */ 5455320226aSPratibhasagar V if (!mmc_card_broken_hpi(card) && 5465320226aSPratibhasagar V !broken_hpi && (ext_csd[EXT_CSD_HPI_FEATURES] & 0x1)) { 547eb0d8f13SJaehoon Chung card->ext_csd.hpi = 1; 548eb0d8f13SJaehoon Chung if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x2) 549eb0d8f13SJaehoon Chung card->ext_csd.hpi_cmd = MMC_STOP_TRANSMISSION; 550eb0d8f13SJaehoon Chung else 551eb0d8f13SJaehoon Chung card->ext_csd.hpi_cmd = MMC_SEND_STATUS; 552eb0d8f13SJaehoon Chung /* 553eb0d8f13SJaehoon Chung * Indicate the maximum timeout to close 554eb0d8f13SJaehoon Chung * a command interrupted by HPI 555eb0d8f13SJaehoon Chung */ 556eb0d8f13SJaehoon Chung card->ext_csd.out_of_int_time = 557eb0d8f13SJaehoon Chung ext_csd[EXT_CSD_OUT_OF_INTERRUPT_TIME] * 10; 558eb0d8f13SJaehoon Chung } 559eb0d8f13SJaehoon Chung 560f4c5522bSAndrei Warkentin card->ext_csd.rel_param = ext_csd[EXT_CSD_WR_REL_PARAM]; 561b2499518SAdrian Hunter card->ext_csd.rst_n_function = ext_csd[EXT_CSD_RST_N_FUNCTION]; 562090d25feSLoic Pallardy 563090d25feSLoic Pallardy /* 564090d25feSLoic Pallardy * RPMB regions are defined in multiples of 128K. 565090d25feSLoic Pallardy */ 566090d25feSLoic Pallardy card->ext_csd.raw_rpmb_size_mult = ext_csd[EXT_CSD_RPMB_MULT]; 567d0123ccaSBalaji T K if (ext_csd[EXT_CSD_RPMB_MULT] && mmc_host_cmd23(card->host)) { 568090d25feSLoic Pallardy mmc_part_add(card, ext_csd[EXT_CSD_RPMB_MULT] << 17, 569090d25feSLoic Pallardy EXT_CSD_PART_CONFIG_ACC_RPMB, 570090d25feSLoic Pallardy "rpmb", 0, false, 571090d25feSLoic Pallardy MMC_BLK_DATA_AREA_RPMB); 572090d25feSLoic Pallardy } 573b2499518SAdrian Hunter } 574f4c5522bSAndrei Warkentin 5755238acbeSAndrei Warkentin card->ext_csd.raw_erased_mem_count = ext_csd[EXT_CSD_ERASED_MEM_CONT]; 576dfe86cbaSAdrian Hunter if (ext_csd[EXT_CSD_ERASED_MEM_CONT]) 577dfe86cbaSAdrian Hunter card->erased_byte = 0xFF; 578dfe86cbaSAdrian Hunter else 579dfe86cbaSAdrian Hunter card->erased_byte = 0x0; 580dfe86cbaSAdrian Hunter 581336c716aSSeungwon Jeon /* eMMC v4.5 or later */ 582fe1b5700SUlf Hansson card->ext_csd.generic_cmd6_time = DEFAULT_CMD6_TIMEOUT_MS; 583bec8726aSGirish K S if (card->ext_csd.rev >= 6) { 584336c716aSSeungwon Jeon card->ext_csd.feature_support |= MMC_DISCARD_FEATURE; 585336c716aSSeungwon Jeon 586b23cf0bdSSeungwon Jeon card->ext_csd.generic_cmd6_time = 10 * 587b23cf0bdSSeungwon Jeon ext_csd[EXT_CSD_GENERIC_CMD6_TIME]; 588bec8726aSGirish K S card->ext_csd.power_off_longtime = 10 * 589bec8726aSGirish K S ext_csd[EXT_CSD_POWER_OFF_LONG_TIME]; 590b23cf0bdSSeungwon Jeon 591881d1c25SSeungwon Jeon card->ext_csd.cache_size = 592881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 0] << 0 | 593881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 1] << 8 | 594881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 2] << 16 | 595881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 3] << 24; 5964265900eSSaugata Das 5974265900eSSaugata Das if (ext_csd[EXT_CSD_DATA_SECTOR_SIZE] == 1) 5984265900eSSaugata Das card->ext_csd.data_sector_size = 4096; 5994265900eSSaugata Das else 6004265900eSSaugata Das card->ext_csd.data_sector_size = 512; 6014265900eSSaugata Das 6024265900eSSaugata Das if ((ext_csd[EXT_CSD_DATA_TAG_SUPPORT] & 1) && 6034265900eSSaugata Das (ext_csd[EXT_CSD_TAG_UNIT_SIZE] <= 8)) { 6044265900eSSaugata Das card->ext_csd.data_tag_unit_size = 6054265900eSSaugata Das ((unsigned int) 1 << ext_csd[EXT_CSD_TAG_UNIT_SIZE]) * 6064265900eSSaugata Das (card->ext_csd.data_sector_size); 6074265900eSSaugata Das } else { 6084265900eSSaugata Das card->ext_csd.data_tag_unit_size = 0; 6094265900eSSaugata Das } 610abd9ac14SSeungwon Jeon 611abd9ac14SSeungwon Jeon card->ext_csd.max_packed_writes = 612abd9ac14SSeungwon Jeon ext_csd[EXT_CSD_MAX_PACKED_WRITES]; 613abd9ac14SSeungwon Jeon card->ext_csd.max_packed_reads = 614abd9ac14SSeungwon Jeon ext_csd[EXT_CSD_MAX_PACKED_READS]; 615a5075eb9SSaugata Das } else { 616a5075eb9SSaugata Das card->ext_csd.data_sector_size = 512; 617336c716aSSeungwon Jeon } 618881d1c25SSeungwon Jeon 6190f762426SGwendal Grignou /* eMMC v5 or later */ 6200f762426SGwendal Grignou if (card->ext_csd.rev >= 7) { 6210f762426SGwendal Grignou memcpy(card->ext_csd.fwrev, &ext_csd[EXT_CSD_FIRMWARE_VERSION], 6220f762426SGwendal Grignou MMC_FIRMWARE_LEN); 6230f762426SGwendal Grignou card->ext_csd.ffu_capable = 6240f762426SGwendal Grignou (ext_csd[EXT_CSD_SUPPORTED_MODE] & 0x1) && 6250f762426SGwendal Grignou !(ext_csd[EXT_CSD_FW_CONFIG] & 0x1); 62646bc5c40SJungseung Lee 62746bc5c40SJungseung Lee card->ext_csd.pre_eol_info = ext_csd[EXT_CSD_PRE_EOL_INFO]; 62846bc5c40SJungseung Lee card->ext_csd.device_life_time_est_typ_a = 62946bc5c40SJungseung Lee ext_csd[EXT_CSD_DEVICE_LIFE_TIME_EST_TYP_A]; 63046bc5c40SJungseung Lee card->ext_csd.device_life_time_est_typ_b = 63146bc5c40SJungseung Lee ext_csd[EXT_CSD_DEVICE_LIFE_TIME_EST_TYP_B]; 6320f762426SGwendal Grignou } 633925ff3a7SAdrian Hunter 634925ff3a7SAdrian Hunter /* eMMC v5.1 or later */ 635925ff3a7SAdrian Hunter if (card->ext_csd.rev >= 8) { 636925ff3a7SAdrian Hunter card->ext_csd.cmdq_support = ext_csd[EXT_CSD_CMDQ_SUPPORT] & 637925ff3a7SAdrian Hunter EXT_CSD_CMDQ_SUPPORTED; 638925ff3a7SAdrian Hunter card->ext_csd.cmdq_depth = (ext_csd[EXT_CSD_CMDQ_DEPTH] & 639925ff3a7SAdrian Hunter EXT_CSD_CMDQ_DEPTH_MASK) + 1; 640925ff3a7SAdrian Hunter /* Exclude inefficiently small queue depths */ 641925ff3a7SAdrian Hunter if (card->ext_csd.cmdq_depth <= 2) { 642925ff3a7SAdrian Hunter card->ext_csd.cmdq_support = false; 643925ff3a7SAdrian Hunter card->ext_csd.cmdq_depth = 0; 644925ff3a7SAdrian Hunter } 645925ff3a7SAdrian Hunter if (card->ext_csd.cmdq_support) { 646925ff3a7SAdrian Hunter pr_debug("%s: Command Queue supported depth %u\n", 647925ff3a7SAdrian Hunter mmc_hostname(card->host), 648925ff3a7SAdrian Hunter card->ext_csd.cmdq_depth); 649925ff3a7SAdrian Hunter } 650925ff3a7SAdrian Hunter } 6517ea239d9SPierre Ossman out: 65208ee80ccSPhilip Rakity return err; 65308ee80ccSPhilip Rakity } 6547ea239d9SPierre Ossman 655076ec38aSUlf Hansson static int mmc_read_ext_csd(struct mmc_card *card) 656076ec38aSUlf Hansson { 657c197787cSUlf Hansson u8 *ext_csd; 658076ec38aSUlf Hansson int err; 659076ec38aSUlf Hansson 660c197787cSUlf Hansson if (!mmc_can_ext_csd(card)) 661c197787cSUlf Hansson return 0; 662c197787cSUlf Hansson 663076ec38aSUlf Hansson err = mmc_get_ext_csd(card, &ext_csd); 664c197787cSUlf Hansson if (err) { 665c197787cSUlf Hansson /* If the host or the card can't do the switch, 666c197787cSUlf Hansson * fail more gracefully. */ 667c197787cSUlf Hansson if ((err != -EINVAL) 668c197787cSUlf Hansson && (err != -ENOSYS) 669c197787cSUlf Hansson && (err != -EFAULT)) 670076ec38aSUlf Hansson return err; 671076ec38aSUlf Hansson 672c197787cSUlf Hansson /* 673c197787cSUlf Hansson * High capacity cards should have this "magic" size 674c197787cSUlf Hansson * stored in their CSD. 675c197787cSUlf Hansson */ 676c197787cSUlf Hansson if (card->csd.capacity == (4096 * 512)) { 677c197787cSUlf Hansson pr_err("%s: unable to read EXT_CSD on a possible high capacity card. Card will be ignored.\n", 678c197787cSUlf Hansson mmc_hostname(card->host)); 679c197787cSUlf Hansson } else { 680c197787cSUlf Hansson pr_warn("%s: unable to read EXT_CSD, performance might suffer\n", 681c197787cSUlf Hansson mmc_hostname(card->host)); 682c197787cSUlf Hansson err = 0; 683c197787cSUlf Hansson } 684c197787cSUlf Hansson 685c197787cSUlf Hansson return err; 686c197787cSUlf Hansson } 687c197787cSUlf Hansson 688076ec38aSUlf Hansson err = mmc_decode_ext_csd(card, ext_csd); 689076ec38aSUlf Hansson kfree(ext_csd); 690076ec38aSUlf Hansson return err; 691076ec38aSUlf Hansson } 692076ec38aSUlf Hansson 693f39b2dd9SPhilip Rakity static int mmc_compare_ext_csds(struct mmc_card *card, unsigned bus_width) 69408ee80ccSPhilip Rakity { 69508ee80ccSPhilip Rakity u8 *bw_ext_csd; 69608ee80ccSPhilip Rakity int err; 69708ee80ccSPhilip Rakity 698f39b2dd9SPhilip Rakity if (bus_width == MMC_BUS_WIDTH_1) 699f39b2dd9SPhilip Rakity return 0; 70008ee80ccSPhilip Rakity 701f39b2dd9SPhilip Rakity err = mmc_get_ext_csd(card, &bw_ext_csd); 702c197787cSUlf Hansson if (err) 703c197787cSUlf Hansson return err; 70408ee80ccSPhilip Rakity 70508ee80ccSPhilip Rakity /* only compare read only fields */ 706dd13b4edSJurgen Heeks err = !((card->ext_csd.raw_partition_support == 70708ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_PARTITION_SUPPORT]) && 708f39b2dd9SPhilip Rakity (card->ext_csd.raw_erased_mem_count == 70908ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_ERASED_MEM_CONT]) && 710f39b2dd9SPhilip Rakity (card->ext_csd.rev == 71108ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_REV]) && 712f39b2dd9SPhilip Rakity (card->ext_csd.raw_ext_csd_structure == 71308ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_STRUCTURE]) && 714f39b2dd9SPhilip Rakity (card->ext_csd.raw_card_type == 71508ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_CARD_TYPE]) && 716f39b2dd9SPhilip Rakity (card->ext_csd.raw_s_a_timeout == 71708ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_S_A_TIMEOUT]) && 718f39b2dd9SPhilip Rakity (card->ext_csd.raw_hc_erase_gap_size == 71908ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_HC_WP_GRP_SIZE]) && 720f39b2dd9SPhilip Rakity (card->ext_csd.raw_erase_timeout_mult == 72108ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]) && 722f39b2dd9SPhilip Rakity (card->ext_csd.raw_hc_erase_grp_size == 72308ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]) && 724f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_trim_mult == 72508ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_TRIM_MULT]) && 726f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_erase_mult == 72708ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_ERASE_MULT]) && 728f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_feature_support == 72908ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]) && 730f39b2dd9SPhilip Rakity (card->ext_csd.raw_trim_mult == 73108ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_TRIM_MULT]) && 732f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[0] == 733f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 0]) && 734f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[1] == 735f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 1]) && 736f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[2] == 737f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 2]) && 738f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[3] == 73960443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_SEC_CNT + 3]) && 74060443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_52_195 == 74160443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_52_195]) && 74260443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_26_195 == 74360443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_26_195]) && 74460443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_52_360 == 74560443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_52_360]) && 74660443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_26_360 == 74760443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_26_360]) && 74860443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_200_195 == 74960443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_200_195]) && 75060443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_200_360 == 75160443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_200_360]) && 75260443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_ddr_52_195 == 75360443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_195]) && 75460443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_ddr_52_360 == 7550a5b6438SSeungwon Jeon bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_360]) && 7560a5b6438SSeungwon Jeon (card->ext_csd.raw_pwr_cl_ddr_200_360 == 7570a5b6438SSeungwon Jeon bw_ext_csd[EXT_CSD_PWR_CL_DDR_200_360])); 7580a5b6438SSeungwon Jeon 75908ee80ccSPhilip Rakity if (err) 76008ee80ccSPhilip Rakity err = -EINVAL; 76108ee80ccSPhilip Rakity 76200b41b58SUlf Hansson kfree(bw_ext_csd); 7637ea239d9SPierre Ossman return err; 7647ea239d9SPierre Ossman } 7657ea239d9SPierre Ossman 76651ec92e2SPierre Ossman MMC_DEV_ATTR(cid, "%08x%08x%08x%08x\n", card->raw_cid[0], card->raw_cid[1], 76751ec92e2SPierre Ossman card->raw_cid[2], card->raw_cid[3]); 76851ec92e2SPierre Ossman MMC_DEV_ATTR(csd, "%08x%08x%08x%08x\n", card->raw_csd[0], card->raw_csd[1], 76951ec92e2SPierre Ossman card->raw_csd[2], card->raw_csd[3]); 77051ec92e2SPierre Ossman MMC_DEV_ATTR(date, "%02d/%04d\n", card->cid.month, card->cid.year); 771dfe86cbaSAdrian Hunter MMC_DEV_ATTR(erase_size, "%u\n", card->erase_size << 9); 772dfe86cbaSAdrian Hunter MMC_DEV_ATTR(preferred_erase_size, "%u\n", card->pref_erase << 9); 7730f762426SGwendal Grignou MMC_DEV_ATTR(ffu_capable, "%d\n", card->ext_csd.ffu_capable); 77451ec92e2SPierre Ossman MMC_DEV_ATTR(hwrev, "0x%x\n", card->cid.hwrev); 77551ec92e2SPierre Ossman MMC_DEV_ATTR(manfid, "0x%06x\n", card->cid.manfid); 77651ec92e2SPierre Ossman MMC_DEV_ATTR(name, "%s\n", card->cid.prod_name); 77751ec92e2SPierre Ossman MMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid); 77851e7e8b6SBernie Thompson MMC_DEV_ATTR(prv, "0x%x\n", card->cid.prv); 77904fa0540SJin Qian MMC_DEV_ATTR(rev, "0x%x\n", card->ext_csd.rev); 78080a780a1SBastian Stender MMC_DEV_ATTR(pre_eol_info, "0x%02x\n", card->ext_csd.pre_eol_info); 78146bc5c40SJungseung Lee MMC_DEV_ATTR(life_time, "0x%02x 0x%02x\n", 78246bc5c40SJungseung Lee card->ext_csd.device_life_time_est_typ_a, 78346bc5c40SJungseung Lee card->ext_csd.device_life_time_est_typ_b); 78451ec92e2SPierre Ossman MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial); 785709de99dSChuanxiao Dong MMC_DEV_ATTR(enhanced_area_offset, "%llu\n", 786709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset); 787709de99dSChuanxiao Dong MMC_DEV_ATTR(enhanced_area_size, "%u\n", card->ext_csd.enhanced_area_size); 788188cc042SLoic Pallardy MMC_DEV_ATTR(raw_rpmb_size_mult, "%#x\n", card->ext_csd.raw_rpmb_size_mult); 789188cc042SLoic Pallardy MMC_DEV_ATTR(rel_sectors, "%#x\n", card->ext_csd.rel_sectors); 790c892b0d8SBastian Stender MMC_DEV_ATTR(ocr, "0x%08x\n", card->ocr); 791974e85e9SHarish Jenny K N MMC_DEV_ATTR(rca, "0x%04x\n", card->rca); 792b658af71SAdrian Hunter MMC_DEV_ATTR(cmdq_en, "%d\n", card->ext_csd.cmdq_en); 79351ec92e2SPierre Ossman 7940f762426SGwendal Grignou static ssize_t mmc_fwrev_show(struct device *dev, 7950f762426SGwendal Grignou struct device_attribute *attr, 7960f762426SGwendal Grignou char *buf) 7970f762426SGwendal Grignou { 7980f762426SGwendal Grignou struct mmc_card *card = mmc_dev_to_card(dev); 7990f762426SGwendal Grignou 8000f762426SGwendal Grignou if (card->ext_csd.rev < 7) { 8010f762426SGwendal Grignou return sprintf(buf, "0x%x\n", card->cid.fwrev); 8020f762426SGwendal Grignou } else { 8030f762426SGwendal Grignou return sprintf(buf, "0x%*phN\n", MMC_FIRMWARE_LEN, 8040f762426SGwendal Grignou card->ext_csd.fwrev); 8050f762426SGwendal Grignou } 8060f762426SGwendal Grignou } 8070f762426SGwendal Grignou 8080f762426SGwendal Grignou static DEVICE_ATTR(fwrev, S_IRUGO, mmc_fwrev_show, NULL); 8090f762426SGwendal Grignou 8106825a606SBojan Prtvar static ssize_t mmc_dsr_show(struct device *dev, 8116825a606SBojan Prtvar struct device_attribute *attr, 8126825a606SBojan Prtvar char *buf) 8136825a606SBojan Prtvar { 8146825a606SBojan Prtvar struct mmc_card *card = mmc_dev_to_card(dev); 8156825a606SBojan Prtvar struct mmc_host *host = card->host; 8166825a606SBojan Prtvar 8176825a606SBojan Prtvar if (card->csd.dsr_imp && host->dsr_req) 8186825a606SBojan Prtvar return sprintf(buf, "0x%x\n", host->dsr); 8196825a606SBojan Prtvar else 8206825a606SBojan Prtvar /* return default DSR value */ 8216825a606SBojan Prtvar return sprintf(buf, "0x%x\n", 0x404); 8226825a606SBojan Prtvar } 8236825a606SBojan Prtvar 8246825a606SBojan Prtvar static DEVICE_ATTR(dsr, S_IRUGO, mmc_dsr_show, NULL); 8256825a606SBojan Prtvar 82651ec92e2SPierre Ossman static struct attribute *mmc_std_attrs[] = { 82751ec92e2SPierre Ossman &dev_attr_cid.attr, 82851ec92e2SPierre Ossman &dev_attr_csd.attr, 82951ec92e2SPierre Ossman &dev_attr_date.attr, 830dfe86cbaSAdrian Hunter &dev_attr_erase_size.attr, 831dfe86cbaSAdrian Hunter &dev_attr_preferred_erase_size.attr, 83251ec92e2SPierre Ossman &dev_attr_fwrev.attr, 8330f762426SGwendal Grignou &dev_attr_ffu_capable.attr, 83451ec92e2SPierre Ossman &dev_attr_hwrev.attr, 83551ec92e2SPierre Ossman &dev_attr_manfid.attr, 83651ec92e2SPierre Ossman &dev_attr_name.attr, 83751ec92e2SPierre Ossman &dev_attr_oemid.attr, 83851e7e8b6SBernie Thompson &dev_attr_prv.attr, 83904fa0540SJin Qian &dev_attr_rev.attr, 84046bc5c40SJungseung Lee &dev_attr_pre_eol_info.attr, 84146bc5c40SJungseung Lee &dev_attr_life_time.attr, 84251ec92e2SPierre Ossman &dev_attr_serial.attr, 843709de99dSChuanxiao Dong &dev_attr_enhanced_area_offset.attr, 844709de99dSChuanxiao Dong &dev_attr_enhanced_area_size.attr, 845188cc042SLoic Pallardy &dev_attr_raw_rpmb_size_mult.attr, 846188cc042SLoic Pallardy &dev_attr_rel_sectors.attr, 8475fb06af7SBojan Prtvar &dev_attr_ocr.attr, 848974e85e9SHarish Jenny K N &dev_attr_rca.attr, 8496825a606SBojan Prtvar &dev_attr_dsr.attr, 850b658af71SAdrian Hunter &dev_attr_cmdq_en.attr, 85151ec92e2SPierre Ossman NULL, 85251ec92e2SPierre Ossman }; 853d1e58212SAxel Lin ATTRIBUTE_GROUPS(mmc_std); 85451ec92e2SPierre Ossman 85551ec92e2SPierre Ossman static struct device_type mmc_type = { 856d1e58212SAxel Lin .groups = mmc_std_groups, 85751ec92e2SPierre Ossman }; 85851ec92e2SPierre Ossman 8597ea239d9SPierre Ossman /* 860b87d8dbfSGirish K S * Select the PowerClass for the current bus width 861b87d8dbfSGirish K S * If power class is defined for 4/8 bit bus in the 862b87d8dbfSGirish K S * extended CSD register, select it by executing the 863b87d8dbfSGirish K S * mmc_switch command. 864b87d8dbfSGirish K S */ 8652385049dSSeungwon Jeon static int __mmc_select_powerclass(struct mmc_card *card, 86660443712SFredrik Soderstedt unsigned int bus_width) 867b87d8dbfSGirish K S { 8682385049dSSeungwon Jeon struct mmc_host *host = card->host; 8692385049dSSeungwon Jeon struct mmc_ext_csd *ext_csd = &card->ext_csd; 87060443712SFredrik Soderstedt unsigned int pwrclass_val = 0; 8712385049dSSeungwon Jeon int err = 0; 872b87d8dbfSGirish K S 873b87d8dbfSGirish K S switch (1 << host->ios.vdd) { 874b87d8dbfSGirish K S case MMC_VDD_165_195: 8752385049dSSeungwon Jeon if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) 8762385049dSSeungwon Jeon pwrclass_val = ext_csd->raw_pwr_cl_26_195; 8772385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR) 87860443712SFredrik Soderstedt pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? 8792385049dSSeungwon Jeon ext_csd->raw_pwr_cl_52_195 : 8802385049dSSeungwon Jeon ext_csd->raw_pwr_cl_ddr_52_195; 8812385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HS200_MAX_DTR) 8822385049dSSeungwon Jeon pwrclass_val = ext_csd->raw_pwr_cl_200_195; 883b87d8dbfSGirish K S break; 88493fc5a47SSubhash Jadavani case MMC_VDD_27_28: 88593fc5a47SSubhash Jadavani case MMC_VDD_28_29: 88693fc5a47SSubhash Jadavani case MMC_VDD_29_30: 88793fc5a47SSubhash Jadavani case MMC_VDD_30_31: 88893fc5a47SSubhash Jadavani case MMC_VDD_31_32: 889b87d8dbfSGirish K S case MMC_VDD_32_33: 890b87d8dbfSGirish K S case MMC_VDD_33_34: 891b87d8dbfSGirish K S case MMC_VDD_34_35: 892b87d8dbfSGirish K S case MMC_VDD_35_36: 8932385049dSSeungwon Jeon if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) 8942385049dSSeungwon Jeon pwrclass_val = ext_csd->raw_pwr_cl_26_360; 8952385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR) 89660443712SFredrik Soderstedt pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? 8972385049dSSeungwon Jeon ext_csd->raw_pwr_cl_52_360 : 8982385049dSSeungwon Jeon ext_csd->raw_pwr_cl_ddr_52_360; 8992385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HS200_MAX_DTR) 9000a5b6438SSeungwon Jeon pwrclass_val = (bus_width == EXT_CSD_DDR_BUS_WIDTH_8) ? 9010a5b6438SSeungwon Jeon ext_csd->raw_pwr_cl_ddr_200_360 : 9020a5b6438SSeungwon Jeon ext_csd->raw_pwr_cl_200_360; 903b87d8dbfSGirish K S break; 904b87d8dbfSGirish K S default: 9056606110dSJoe Perches pr_warn("%s: Voltage range not supported for power class\n", 9066606110dSJoe Perches mmc_hostname(host)); 907b87d8dbfSGirish K S return -EINVAL; 908b87d8dbfSGirish K S } 909b87d8dbfSGirish K S 910b87d8dbfSGirish K S if (bus_width & (EXT_CSD_BUS_WIDTH_8 | EXT_CSD_DDR_BUS_WIDTH_8)) 911b87d8dbfSGirish K S pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_8BIT_MASK) >> 912b87d8dbfSGirish K S EXT_CSD_PWR_CL_8BIT_SHIFT; 913b87d8dbfSGirish K S else 914b87d8dbfSGirish K S pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_4BIT_MASK) >> 915b87d8dbfSGirish K S EXT_CSD_PWR_CL_4BIT_SHIFT; 916b87d8dbfSGirish K S 917b87d8dbfSGirish K S /* If the power class is different from the default value */ 918b87d8dbfSGirish K S if (pwrclass_val > 0) { 919b87d8dbfSGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 920b87d8dbfSGirish K S EXT_CSD_POWER_CLASS, 921b87d8dbfSGirish K S pwrclass_val, 92271fe3eb0SSeungwon Jeon card->ext_csd.generic_cmd6_time); 923b87d8dbfSGirish K S } 924b87d8dbfSGirish K S 925b87d8dbfSGirish K S return err; 926b87d8dbfSGirish K S } 927b87d8dbfSGirish K S 9282385049dSSeungwon Jeon static int mmc_select_powerclass(struct mmc_card *card) 9292385049dSSeungwon Jeon { 9302385049dSSeungwon Jeon struct mmc_host *host = card->host; 9312385049dSSeungwon Jeon u32 bus_width, ext_csd_bits; 9322385049dSSeungwon Jeon int err, ddr; 9332385049dSSeungwon Jeon 9342385049dSSeungwon Jeon /* Power class selection is supported for versions >= 4.0 */ 935148bcab2SUlf Hansson if (!mmc_can_ext_csd(card)) 9362385049dSSeungwon Jeon return 0; 9372385049dSSeungwon Jeon 9382385049dSSeungwon Jeon bus_width = host->ios.bus_width; 9392385049dSSeungwon Jeon /* Power class values are defined only for 4/8 bit bus */ 9402385049dSSeungwon Jeon if (bus_width == MMC_BUS_WIDTH_1) 9412385049dSSeungwon Jeon return 0; 9422385049dSSeungwon Jeon 9432385049dSSeungwon Jeon ddr = card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52; 9442385049dSSeungwon Jeon if (ddr) 9452385049dSSeungwon Jeon ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? 9462385049dSSeungwon Jeon EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; 9472385049dSSeungwon Jeon else 9482385049dSSeungwon Jeon ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? 9492385049dSSeungwon Jeon EXT_CSD_BUS_WIDTH_8 : EXT_CSD_BUS_WIDTH_4; 9502385049dSSeungwon Jeon 9512385049dSSeungwon Jeon err = __mmc_select_powerclass(card, ext_csd_bits); 9522385049dSSeungwon Jeon if (err) 9532385049dSSeungwon Jeon pr_warn("%s: power class selection to bus width %d ddr %d failed\n", 9542385049dSSeungwon Jeon mmc_hostname(host), 1 << bus_width, ddr); 9552385049dSSeungwon Jeon 9562385049dSSeungwon Jeon return err; 9572385049dSSeungwon Jeon } 9582385049dSSeungwon Jeon 959b87d8dbfSGirish K S /* 960577fb131SSeungwon Jeon * Set the bus speed for the selected speed mode. 961a4924c71SGirish K S */ 962577fb131SSeungwon Jeon static void mmc_set_bus_speed(struct mmc_card *card) 963a4924c71SGirish K S { 964577fb131SSeungwon Jeon unsigned int max_dtr = (unsigned int)-1; 965577fb131SSeungwon Jeon 9660a5b6438SSeungwon Jeon if ((mmc_card_hs200(card) || mmc_card_hs400(card)) && 9670a5b6438SSeungwon Jeon max_dtr > card->ext_csd.hs200_max_dtr) 968577fb131SSeungwon Jeon max_dtr = card->ext_csd.hs200_max_dtr; 969577fb131SSeungwon Jeon else if (mmc_card_hs(card) && max_dtr > card->ext_csd.hs_max_dtr) 970577fb131SSeungwon Jeon max_dtr = card->ext_csd.hs_max_dtr; 971577fb131SSeungwon Jeon else if (max_dtr > card->csd.max_dtr) 972577fb131SSeungwon Jeon max_dtr = card->csd.max_dtr; 973577fb131SSeungwon Jeon 974577fb131SSeungwon Jeon mmc_set_clock(card->host, max_dtr); 975577fb131SSeungwon Jeon } 976577fb131SSeungwon Jeon 977577fb131SSeungwon Jeon /* 978577fb131SSeungwon Jeon * Select the bus width amoung 4-bit and 8-bit(SDR). 979577fb131SSeungwon Jeon * If the bus width is changed successfully, return the selected width value. 980577fb131SSeungwon Jeon * Zero is returned instead of error value if the wide width is not supported. 981577fb131SSeungwon Jeon */ 982577fb131SSeungwon Jeon static int mmc_select_bus_width(struct mmc_card *card) 983577fb131SSeungwon Jeon { 984a4924c71SGirish K S static unsigned ext_csd_bits[] = { 985a4924c71SGirish K S EXT_CSD_BUS_WIDTH_8, 986577fb131SSeungwon Jeon EXT_CSD_BUS_WIDTH_4, 987a4924c71SGirish K S }; 988a4924c71SGirish K S static unsigned bus_widths[] = { 989a4924c71SGirish K S MMC_BUS_WIDTH_8, 990577fb131SSeungwon Jeon MMC_BUS_WIDTH_4, 991a4924c71SGirish K S }; 992577fb131SSeungwon Jeon struct mmc_host *host = card->host; 993577fb131SSeungwon Jeon unsigned idx, bus_width = 0; 994577fb131SSeungwon Jeon int err = 0; 995a4924c71SGirish K S 9961c2d26e3SAlexandre Belloni if (!mmc_can_ext_csd(card) || 997577fb131SSeungwon Jeon !(host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) 998577fb131SSeungwon Jeon return 0; 999a4924c71SGirish K S 1000577fb131SSeungwon Jeon idx = (host->caps & MMC_CAP_8_BIT_DATA) ? 0 : 1; 1001a4924c71SGirish K S 1002a4924c71SGirish K S /* 1003a4924c71SGirish K S * Unlike SD, MMC cards dont have a configuration register to notify 1004a4924c71SGirish K S * supported bus width. So bus test command should be run to identify 1005a4924c71SGirish K S * the supported bus width or compare the ext csd values of current 1006a4924c71SGirish K S * bus width and ext csd values of 1 bit mode read earlier. 1007a4924c71SGirish K S */ 1008577fb131SSeungwon Jeon for (; idx < ARRAY_SIZE(bus_widths); idx++) { 1009a4924c71SGirish K S /* 1010a4924c71SGirish K S * Host is capable of 8bit transfer, then switch 1011a4924c71SGirish K S * the device to work in 8bit transfer mode. If the 1012a4924c71SGirish K S * mmc switch command returns error then switch to 1013a4924c71SGirish K S * 4bit transfer mode. On success set the corresponding 1014a4924c71SGirish K S * bus width on the host. 1015a4924c71SGirish K S */ 1016a4924c71SGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1017a4924c71SGirish K S EXT_CSD_BUS_WIDTH, 1018a4924c71SGirish K S ext_csd_bits[idx], 1019a4924c71SGirish K S card->ext_csd.generic_cmd6_time); 1020a4924c71SGirish K S if (err) 1021a4924c71SGirish K S continue; 1022a4924c71SGirish K S 1023577fb131SSeungwon Jeon bus_width = bus_widths[idx]; 1024577fb131SSeungwon Jeon mmc_set_bus_width(host, bus_width); 1025a4924c71SGirish K S 1026577fb131SSeungwon Jeon /* 1027577fb131SSeungwon Jeon * If controller can't handle bus width test, 1028577fb131SSeungwon Jeon * compare ext_csd previously read in 1 bit mode 1029577fb131SSeungwon Jeon * against ext_csd at new bus width 1030577fb131SSeungwon Jeon */ 1031a4924c71SGirish K S if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST)) 1032577fb131SSeungwon Jeon err = mmc_compare_ext_csds(card, bus_width); 1033a4924c71SGirish K S else 1034577fb131SSeungwon Jeon err = mmc_bus_test(card, bus_width); 1035577fb131SSeungwon Jeon 1036577fb131SSeungwon Jeon if (!err) { 1037577fb131SSeungwon Jeon err = bus_width; 1038a4924c71SGirish K S break; 1039577fb131SSeungwon Jeon } else { 1040577fb131SSeungwon Jeon pr_warn("%s: switch to bus width %d failed\n", 1041ed9feec7SWolfram Sang mmc_hostname(host), 1 << bus_width); 1042577fb131SSeungwon Jeon } 1043a4924c71SGirish K S } 1044a4924c71SGirish K S 1045577fb131SSeungwon Jeon return err; 1046577fb131SSeungwon Jeon } 1047577fb131SSeungwon Jeon 1048577fb131SSeungwon Jeon /* 1049577fb131SSeungwon Jeon * Switch to the high-speed mode 1050577fb131SSeungwon Jeon */ 1051577fb131SSeungwon Jeon static int mmc_select_hs(struct mmc_card *card) 1052577fb131SSeungwon Jeon { 1053577fb131SSeungwon Jeon int err; 1054577fb131SSeungwon Jeon 10554509f847SUlf Hansson err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1056577fb131SSeungwon Jeon EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS, 105753e60650SUlf Hansson card->ext_csd.generic_cmd6_time, MMC_TIMING_MMC_HS, 105853e60650SUlf Hansson true, true, true); 105967d35960SJungseung Lee if (err) 106067d35960SJungseung Lee pr_warn("%s: switch to high-speed failed, err:%d\n", 106167d35960SJungseung Lee mmc_hostname(card->host), err); 106267d35960SJungseung Lee 1063577fb131SSeungwon Jeon return err; 1064577fb131SSeungwon Jeon } 1065577fb131SSeungwon Jeon 1066577fb131SSeungwon Jeon /* 1067577fb131SSeungwon Jeon * Activate wide bus and DDR if supported. 1068577fb131SSeungwon Jeon */ 1069577fb131SSeungwon Jeon static int mmc_select_hs_ddr(struct mmc_card *card) 1070577fb131SSeungwon Jeon { 1071577fb131SSeungwon Jeon struct mmc_host *host = card->host; 1072577fb131SSeungwon Jeon u32 bus_width, ext_csd_bits; 1073577fb131SSeungwon Jeon int err = 0; 1074577fb131SSeungwon Jeon 1075577fb131SSeungwon Jeon if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52)) 1076577fb131SSeungwon Jeon return 0; 1077577fb131SSeungwon Jeon 1078577fb131SSeungwon Jeon bus_width = host->ios.bus_width; 1079577fb131SSeungwon Jeon if (bus_width == MMC_BUS_WIDTH_1) 1080577fb131SSeungwon Jeon return 0; 1081577fb131SSeungwon Jeon 1082577fb131SSeungwon Jeon ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? 1083577fb131SSeungwon Jeon EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; 1084577fb131SSeungwon Jeon 1085e173f891SUlf Hansson err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1086577fb131SSeungwon Jeon EXT_CSD_BUS_WIDTH, 1087577fb131SSeungwon Jeon ext_csd_bits, 1088e173f891SUlf Hansson card->ext_csd.generic_cmd6_time, 1089e173f891SUlf Hansson MMC_TIMING_MMC_DDR52, 1090e173f891SUlf Hansson true, true, true); 1091577fb131SSeungwon Jeon if (err) { 10924b75bffcSAndrew Gabbasov pr_err("%s: switch to bus width %d ddr failed\n", 1093577fb131SSeungwon Jeon mmc_hostname(host), 1 << bus_width); 1094577fb131SSeungwon Jeon return err; 1095577fb131SSeungwon Jeon } 1096577fb131SSeungwon Jeon 1097577fb131SSeungwon Jeon /* 1098577fb131SSeungwon Jeon * eMMC cards can support 3.3V to 1.2V i/o (vccq) 1099577fb131SSeungwon Jeon * signaling. 1100577fb131SSeungwon Jeon * 1101577fb131SSeungwon Jeon * EXT_CSD_CARD_TYPE_DDR_1_8V means 3.3V or 1.8V vccq. 1102577fb131SSeungwon Jeon * 1103577fb131SSeungwon Jeon * 1.8V vccq at 3.3V core voltage (vcc) is not required 1104577fb131SSeungwon Jeon * in the JEDEC spec for DDR. 1105577fb131SSeungwon Jeon * 1106312449efSChuanxiao.Dong * Even (e)MMC card can support 3.3v to 1.2v vccq, but not all 1107312449efSChuanxiao.Dong * host controller can support this, like some of the SDHCI 1108312449efSChuanxiao.Dong * controller which connect to an eMMC device. Some of these 1109312449efSChuanxiao.Dong * host controller still needs to use 1.8v vccq for supporting 1110312449efSChuanxiao.Dong * DDR mode. 1111312449efSChuanxiao.Dong * 1112312449efSChuanxiao.Dong * So the sequence will be: 1113312449efSChuanxiao.Dong * if (host and device can both support 1.2v IO) 1114312449efSChuanxiao.Dong * use 1.2v IO; 1115312449efSChuanxiao.Dong * else if (host and device can both support 1.8v IO) 1116312449efSChuanxiao.Dong * use 1.8v IO; 1117312449efSChuanxiao.Dong * so if host and device can only support 3.3v IO, this is the 1118312449efSChuanxiao.Dong * last choice. 1119577fb131SSeungwon Jeon * 1120577fb131SSeungwon Jeon * WARNING: eMMC rules are NOT the same as SD DDR 1121577fb131SSeungwon Jeon */ 112220f921bbSUlf Hansson if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_2V) { 11234e74b6b3SUlf Hansson err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); 112420f921bbSUlf Hansson if (!err) 112520f921bbSUlf Hansson return 0; 112620f921bbSUlf Hansson } 1127577fb131SSeungwon Jeon 112820f921bbSUlf Hansson if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_8V && 112920f921bbSUlf Hansson host->caps & MMC_CAP_1_8V_DDR) 11304e74b6b3SUlf Hansson err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); 1131312449efSChuanxiao.Dong 1132312449efSChuanxiao.Dong /* make sure vccq is 3.3v after switching disaster */ 1133312449efSChuanxiao.Dong if (err) 11344e74b6b3SUlf Hansson err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330); 1135312449efSChuanxiao.Dong 1136577fb131SSeungwon Jeon return err; 1137577fb131SSeungwon Jeon } 1138577fb131SSeungwon Jeon 11390a5b6438SSeungwon Jeon static int mmc_select_hs400(struct mmc_card *card) 11400a5b6438SSeungwon Jeon { 11410a5b6438SSeungwon Jeon struct mmc_host *host = card->host; 114251b12f77SAdrian Hunter unsigned int max_dtr; 11430a5b6438SSeungwon Jeon int err = 0; 1144cc4f414cSAdrian Hunter u8 val; 11450a5b6438SSeungwon Jeon 11460a5b6438SSeungwon Jeon /* 11470a5b6438SSeungwon Jeon * HS400 mode requires 8-bit bus width 11480a5b6438SSeungwon Jeon */ 11490a5b6438SSeungwon Jeon if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 && 11500a5b6438SSeungwon Jeon host->ios.bus_width == MMC_BUS_WIDTH_8)) 11510a5b6438SSeungwon Jeon return 0; 11520a5b6438SSeungwon Jeon 115351b12f77SAdrian Hunter /* Switch card to HS mode */ 1154adb24d42SWenkai Du val = EXT_CSD_TIMING_HS; 11550a5b6438SSeungwon Jeon err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1156cc4f414cSAdrian Hunter EXT_CSD_HS_TIMING, val, 1157aa33ce3cSUlf Hansson card->ext_csd.generic_cmd6_time, 0, 115808573eafSChaotian Jing true, false, true); 11590a5b6438SSeungwon Jeon if (err) { 11604b75bffcSAndrew Gabbasov pr_err("%s: switch to high-speed from hs200 failed, err:%d\n", 11610a5b6438SSeungwon Jeon mmc_hostname(host), err); 11620a5b6438SSeungwon Jeon return err; 11630a5b6438SSeungwon Jeon } 11640a5b6438SSeungwon Jeon 116551b12f77SAdrian Hunter /* Set host controller to HS timing */ 116651b12f77SAdrian Hunter mmc_set_timing(card->host, MMC_TIMING_MMC_HS); 116751b12f77SAdrian Hunter 1168ba6c7ac3SSimon Horman /* Prepare host to downgrade to HS timing */ 1169ba6c7ac3SSimon Horman if (host->ops->hs400_downgrade) 1170ba6c7ac3SSimon Horman host->ops->hs400_downgrade(host); 1171ba6c7ac3SSimon Horman 1172649c6059SZiyuan Xu /* Reduce frequency to HS frequency */ 1173649c6059SZiyuan Xu max_dtr = card->ext_csd.hs_max_dtr; 1174649c6059SZiyuan Xu mmc_set_clock(host, max_dtr); 1175649c6059SZiyuan Xu 117660db8a47SUlf Hansson err = mmc_switch_status(card, true); 1177d2302933SAdrian Hunter if (err) 1178d2302933SAdrian Hunter goto out_err; 1179d2302933SAdrian Hunter 1180cc14eec0SYinbo Zhu if (host->ops->hs400_prepare_ddr) 1181cc14eec0SYinbo Zhu host->ops->hs400_prepare_ddr(host); 1182cc14eec0SYinbo Zhu 1183d2302933SAdrian Hunter /* Switch card to DDR */ 11840a5b6438SSeungwon Jeon err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 11850a5b6438SSeungwon Jeon EXT_CSD_BUS_WIDTH, 11860a5b6438SSeungwon Jeon EXT_CSD_DDR_BUS_WIDTH_8, 11870a5b6438SSeungwon Jeon card->ext_csd.generic_cmd6_time); 11880a5b6438SSeungwon Jeon if (err) { 11894b75bffcSAndrew Gabbasov pr_err("%s: switch to bus width for hs400 failed, err:%d\n", 11900a5b6438SSeungwon Jeon mmc_hostname(host), err); 11910a5b6438SSeungwon Jeon return err; 11920a5b6438SSeungwon Jeon } 11930a5b6438SSeungwon Jeon 1194d2302933SAdrian Hunter /* Switch card to HS400 */ 1195cc4f414cSAdrian Hunter val = EXT_CSD_TIMING_HS400 | 1196cc4f414cSAdrian Hunter card->drive_strength << EXT_CSD_DRV_STR_SHIFT; 11970a5b6438SSeungwon Jeon err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1198cc4f414cSAdrian Hunter EXT_CSD_HS_TIMING, val, 1199aa33ce3cSUlf Hansson card->ext_csd.generic_cmd6_time, 0, 120008573eafSChaotian Jing true, false, true); 12010a5b6438SSeungwon Jeon if (err) { 12024b75bffcSAndrew Gabbasov pr_err("%s: switch to hs400 failed, err:%d\n", 12030a5b6438SSeungwon Jeon mmc_hostname(host), err); 12040a5b6438SSeungwon Jeon return err; 12050a5b6438SSeungwon Jeon } 12060a5b6438SSeungwon Jeon 1207d2302933SAdrian Hunter /* Set host controller to HS400 timing and frequency */ 12080a5b6438SSeungwon Jeon mmc_set_timing(host, MMC_TIMING_MMC_HS400); 12090a5b6438SSeungwon Jeon mmc_set_bus_speed(card); 12100a5b6438SSeungwon Jeon 1211b0e370b9SWolfram Sang if (host->ops->hs400_complete) 1212b0e370b9SWolfram Sang host->ops->hs400_complete(host); 1213b0e370b9SWolfram Sang 121460db8a47SUlf Hansson err = mmc_switch_status(card, true); 1215d2302933SAdrian Hunter if (err) 1216d2302933SAdrian Hunter goto out_err; 1217d2302933SAdrian Hunter 12180a5b6438SSeungwon Jeon return 0; 1219d2302933SAdrian Hunter 1220d2302933SAdrian Hunter out_err: 1221d2302933SAdrian Hunter pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), 1222d2302933SAdrian Hunter __func__, err); 1223d2302933SAdrian Hunter return err; 12240a5b6438SSeungwon Jeon } 12250a5b6438SSeungwon Jeon 12266376f69dSAdrian Hunter int mmc_hs200_to_hs400(struct mmc_card *card) 12276376f69dSAdrian Hunter { 12286376f69dSAdrian Hunter return mmc_select_hs400(card); 12296376f69dSAdrian Hunter } 12306376f69dSAdrian Hunter 12316376f69dSAdrian Hunter int mmc_hs400_to_hs200(struct mmc_card *card) 12326376f69dSAdrian Hunter { 12336376f69dSAdrian Hunter struct mmc_host *host = card->host; 12346376f69dSAdrian Hunter unsigned int max_dtr; 12356376f69dSAdrian Hunter int err; 1236cc4f414cSAdrian Hunter u8 val; 12376376f69dSAdrian Hunter 12386376f69dSAdrian Hunter /* Reduce frequency to HS */ 12396376f69dSAdrian Hunter max_dtr = card->ext_csd.hs_max_dtr; 12406376f69dSAdrian Hunter mmc_set_clock(host, max_dtr); 12416376f69dSAdrian Hunter 12426376f69dSAdrian Hunter /* Switch HS400 to HS DDR */ 1243adb24d42SWenkai Du val = EXT_CSD_TIMING_HS; 12446376f69dSAdrian Hunter err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, 1245aa33ce3cSUlf Hansson val, card->ext_csd.generic_cmd6_time, 0, 124608573eafSChaotian Jing true, false, true); 12476376f69dSAdrian Hunter if (err) 12486376f69dSAdrian Hunter goto out_err; 12496376f69dSAdrian Hunter 12506376f69dSAdrian Hunter mmc_set_timing(host, MMC_TIMING_MMC_DDR52); 12516376f69dSAdrian Hunter 125260db8a47SUlf Hansson err = mmc_switch_status(card, true); 12536376f69dSAdrian Hunter if (err) 12546376f69dSAdrian Hunter goto out_err; 12556376f69dSAdrian Hunter 12566376f69dSAdrian Hunter /* Switch HS DDR to HS */ 12576376f69dSAdrian Hunter err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BUS_WIDTH, 12586376f69dSAdrian Hunter EXT_CSD_BUS_WIDTH_8, card->ext_csd.generic_cmd6_time, 1259aa33ce3cSUlf Hansson 0, true, false, true); 12606376f69dSAdrian Hunter if (err) 12616376f69dSAdrian Hunter goto out_err; 12626376f69dSAdrian Hunter 12636376f69dSAdrian Hunter mmc_set_timing(host, MMC_TIMING_MMC_HS); 12646376f69dSAdrian Hunter 1265ba6c7ac3SSimon Horman if (host->ops->hs400_downgrade) 1266ba6c7ac3SSimon Horman host->ops->hs400_downgrade(host); 1267ba6c7ac3SSimon Horman 126860db8a47SUlf Hansson err = mmc_switch_status(card, true); 12696376f69dSAdrian Hunter if (err) 12706376f69dSAdrian Hunter goto out_err; 12716376f69dSAdrian Hunter 12726376f69dSAdrian Hunter /* Switch HS to HS200 */ 1273cc4f414cSAdrian Hunter val = EXT_CSD_TIMING_HS200 | 1274cc4f414cSAdrian Hunter card->drive_strength << EXT_CSD_DRV_STR_SHIFT; 12756376f69dSAdrian Hunter err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, 1276aa33ce3cSUlf Hansson val, card->ext_csd.generic_cmd6_time, 0, 127708573eafSChaotian Jing true, false, true); 12786376f69dSAdrian Hunter if (err) 12796376f69dSAdrian Hunter goto out_err; 12806376f69dSAdrian Hunter 12816376f69dSAdrian Hunter mmc_set_timing(host, MMC_TIMING_MMC_HS200); 12826376f69dSAdrian Hunter 1283ef3d2322SAdrian Hunter /* 1284ef3d2322SAdrian Hunter * For HS200, CRC errors are not a reliable way to know the switch 1285ef3d2322SAdrian Hunter * failed. If there really is a problem, we would expect tuning will 1286ef3d2322SAdrian Hunter * fail and the result ends up the same. 1287ef3d2322SAdrian Hunter */ 128860db8a47SUlf Hansson err = mmc_switch_status(card, false); 12896376f69dSAdrian Hunter if (err) 12906376f69dSAdrian Hunter goto out_err; 12916376f69dSAdrian Hunter 12926376f69dSAdrian Hunter mmc_set_bus_speed(card); 12936376f69dSAdrian Hunter 1294c8a4e30dSUlf Hansson /* Prepare tuning for HS400 mode. */ 1295c8a4e30dSUlf Hansson if (host->ops->prepare_hs400_tuning) 1296c8a4e30dSUlf Hansson host->ops->prepare_hs400_tuning(host, &host->ios); 1297c8a4e30dSUlf Hansson 12986376f69dSAdrian Hunter return 0; 12996376f69dSAdrian Hunter 13006376f69dSAdrian Hunter out_err: 13016376f69dSAdrian Hunter pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), 13026376f69dSAdrian Hunter __func__, err); 13036376f69dSAdrian Hunter return err; 13046376f69dSAdrian Hunter } 13056376f69dSAdrian Hunter 1306fb458864SChanho Min static void mmc_select_driver_type(struct mmc_card *card) 1307fb458864SChanho Min { 1308be17f1ceSWolfram Sang int card_drv_type, drive_strength, drv_type = 0; 13096186d06cSWolfram Sang int fixed_drv_type = card->host->fixed_drv_type; 1310fb458864SChanho Min 1311fb458864SChanho Min card_drv_type = card->ext_csd.raw_driver_strength | 1312fb458864SChanho Min mmc_driver_type_mask(0); 1313fb458864SChanho Min 13146186d06cSWolfram Sang if (fixed_drv_type >= 0) 13156186d06cSWolfram Sang drive_strength = card_drv_type & mmc_driver_type_mask(fixed_drv_type) 13166186d06cSWolfram Sang ? fixed_drv_type : 0; 13176186d06cSWolfram Sang else 1318fb458864SChanho Min drive_strength = mmc_select_drive_strength(card, 1319fb458864SChanho Min card->ext_csd.hs200_max_dtr, 1320fb458864SChanho Min card_drv_type, &drv_type); 1321fb458864SChanho Min 1322fb458864SChanho Min card->drive_strength = drive_strength; 1323fb458864SChanho Min 1324fb458864SChanho Min if (drv_type) 1325fb458864SChanho Min mmc_set_driver_type(card->host, drv_type); 1326fb458864SChanho Min } 1327fb458864SChanho Min 132881ac2af6SShawn Lin static int mmc_select_hs400es(struct mmc_card *card) 132981ac2af6SShawn Lin { 133081ac2af6SShawn Lin struct mmc_host *host = card->host; 133192ddd959SHaibo Chen int err = -EINVAL; 133281ac2af6SShawn Lin u8 val; 133381ac2af6SShawn Lin 133481ac2af6SShawn Lin if (!(host->caps & MMC_CAP_8_BIT_DATA)) { 133581ac2af6SShawn Lin err = -ENOTSUPP; 133681ac2af6SShawn Lin goto out_err; 133781ac2af6SShawn Lin } 133881ac2af6SShawn Lin 13391720d354SShawn Lin if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400_1_2V) 13404e74b6b3SUlf Hansson err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); 13411720d354SShawn Lin 13421720d354SShawn Lin if (err && card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400_1_8V) 13434e74b6b3SUlf Hansson err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); 13441720d354SShawn Lin 13451720d354SShawn Lin /* If fails try again during next card power cycle */ 13461720d354SShawn Lin if (err) 13471720d354SShawn Lin goto out_err; 13481720d354SShawn Lin 134981ac2af6SShawn Lin err = mmc_select_bus_width(card); 13507f38abf2SHongjie Fang if (err != MMC_BUS_WIDTH_8) { 13517f38abf2SHongjie Fang pr_err("%s: switch to 8bit bus width failed, err:%d\n", 13527f38abf2SHongjie Fang mmc_hostname(host), err); 13537f38abf2SHongjie Fang err = err < 0 ? err : -ENOTSUPP; 135481ac2af6SShawn Lin goto out_err; 13557f38abf2SHongjie Fang } 135681ac2af6SShawn Lin 135781ac2af6SShawn Lin /* Switch card to HS mode */ 135853e60650SUlf Hansson err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 135953e60650SUlf Hansson EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS, 136053e60650SUlf Hansson card->ext_csd.generic_cmd6_time, 0, 136153e60650SUlf Hansson true, false, true); 136253e60650SUlf Hansson if (err) { 136353e60650SUlf Hansson pr_err("%s: switch to hs for hs400es failed, err:%d\n", 136453e60650SUlf Hansson mmc_hostname(host), err); 136553e60650SUlf Hansson goto out_err; 136653e60650SUlf Hansson } 136753e60650SUlf Hansson 136853e60650SUlf Hansson mmc_set_timing(host, MMC_TIMING_MMC_HS); 136960db8a47SUlf Hansson err = mmc_switch_status(card, true); 137067d35960SJungseung Lee if (err) 137181ac2af6SShawn Lin goto out_err; 137281ac2af6SShawn Lin 13734f25580fSShawn Lin mmc_set_clock(host, card->ext_csd.hs_max_dtr); 13744f25580fSShawn Lin 137581ac2af6SShawn Lin /* Switch card to DDR with strobe bit */ 137681ac2af6SShawn Lin val = EXT_CSD_DDR_BUS_WIDTH_8 | EXT_CSD_BUS_WIDTH_STROBE; 137781ac2af6SShawn Lin err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 137881ac2af6SShawn Lin EXT_CSD_BUS_WIDTH, 137981ac2af6SShawn Lin val, 138081ac2af6SShawn Lin card->ext_csd.generic_cmd6_time); 138181ac2af6SShawn Lin if (err) { 138281ac2af6SShawn Lin pr_err("%s: switch to bus width for hs400es failed, err:%d\n", 138381ac2af6SShawn Lin mmc_hostname(host), err); 138481ac2af6SShawn Lin goto out_err; 138581ac2af6SShawn Lin } 138681ac2af6SShawn Lin 1387fb458864SChanho Min mmc_select_driver_type(card); 1388fb458864SChanho Min 138981ac2af6SShawn Lin /* Switch card to HS400 */ 139081ac2af6SShawn Lin val = EXT_CSD_TIMING_HS400 | 139181ac2af6SShawn Lin card->drive_strength << EXT_CSD_DRV_STR_SHIFT; 139281ac2af6SShawn Lin err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 139381ac2af6SShawn Lin EXT_CSD_HS_TIMING, val, 1394aa33ce3cSUlf Hansson card->ext_csd.generic_cmd6_time, 0, 139581ac2af6SShawn Lin true, false, true); 139681ac2af6SShawn Lin if (err) { 139781ac2af6SShawn Lin pr_err("%s: switch to hs400es failed, err:%d\n", 139881ac2af6SShawn Lin mmc_hostname(host), err); 139981ac2af6SShawn Lin goto out_err; 140081ac2af6SShawn Lin } 140181ac2af6SShawn Lin 140281ac2af6SShawn Lin /* Set host controller to HS400 timing and frequency */ 140381ac2af6SShawn Lin mmc_set_timing(host, MMC_TIMING_MMC_HS400); 140481ac2af6SShawn Lin 140581ac2af6SShawn Lin /* Controller enable enhanced strobe function */ 140681ac2af6SShawn Lin host->ios.enhanced_strobe = true; 140781ac2af6SShawn Lin if (host->ops->hs400_enhanced_strobe) 140881ac2af6SShawn Lin host->ops->hs400_enhanced_strobe(host, &host->ios); 140981ac2af6SShawn Lin 141060db8a47SUlf Hansson err = mmc_switch_status(card, true); 141181ac2af6SShawn Lin if (err) 141281ac2af6SShawn Lin goto out_err; 141381ac2af6SShawn Lin 141481ac2af6SShawn Lin return 0; 141581ac2af6SShawn Lin 141681ac2af6SShawn Lin out_err: 141781ac2af6SShawn Lin pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), 141881ac2af6SShawn Lin __func__, err); 141981ac2af6SShawn Lin return err; 142081ac2af6SShawn Lin } 142181ac2af6SShawn Lin 1422577fb131SSeungwon Jeon /* 1423577fb131SSeungwon Jeon * For device supporting HS200 mode, the following sequence 1424577fb131SSeungwon Jeon * should be done before executing the tuning process. 1425577fb131SSeungwon Jeon * 1. set the desired bus width(4-bit or 8-bit, 1-bit is not supported) 1426577fb131SSeungwon Jeon * 2. switch to HS200 mode 1427577fb131SSeungwon Jeon * 3. set the clock to > 52Mhz and <=200MHz 1428577fb131SSeungwon Jeon */ 1429577fb131SSeungwon Jeon static int mmc_select_hs200(struct mmc_card *card) 1430577fb131SSeungwon Jeon { 1431577fb131SSeungwon Jeon struct mmc_host *host = card->host; 1432e51534c8SDong Aisheng unsigned int old_timing, old_signal_voltage; 1433577fb131SSeungwon Jeon int err = -EINVAL; 1434cc4f414cSAdrian Hunter u8 val; 1435577fb131SSeungwon Jeon 1436e51534c8SDong Aisheng old_signal_voltage = host->ios.signal_voltage; 1437577fb131SSeungwon Jeon if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_2V) 14384e74b6b3SUlf Hansson err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); 1439577fb131SSeungwon Jeon 1440577fb131SSeungwon Jeon if (err && card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_8V) 14414e74b6b3SUlf Hansson err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); 1442577fb131SSeungwon Jeon 1443577fb131SSeungwon Jeon /* If fails try again during next card power cycle */ 1444577fb131SSeungwon Jeon if (err) 1445e51534c8SDong Aisheng return err; 1446577fb131SSeungwon Jeon 1447cc4f414cSAdrian Hunter mmc_select_driver_type(card); 1448cc4f414cSAdrian Hunter 1449577fb131SSeungwon Jeon /* 1450577fb131SSeungwon Jeon * Set the bus width(4 or 8) with host's support and 1451577fb131SSeungwon Jeon * switch to HS200 mode if bus width is set successfully. 1452577fb131SSeungwon Jeon */ 1453577fb131SSeungwon Jeon err = mmc_select_bus_width(card); 14548b7be8f2SPeter Griffin if (err > 0) { 1455cc4f414cSAdrian Hunter val = EXT_CSD_TIMING_HS200 | 1456cc4f414cSAdrian Hunter card->drive_strength << EXT_CSD_DRV_STR_SHIFT; 1457577fb131SSeungwon Jeon err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1458cc4f414cSAdrian Hunter EXT_CSD_HS_TIMING, val, 1459aa33ce3cSUlf Hansson card->ext_csd.generic_cmd6_time, 0, 146008573eafSChaotian Jing true, false, true); 14611815e61bSAdrian Hunter if (err) 14621815e61bSAdrian Hunter goto err; 14631815e61bSAdrian Hunter old_timing = host->ios.timing; 1464577fb131SSeungwon Jeon mmc_set_timing(host, MMC_TIMING_MMC_HS200); 146508573eafSChaotian Jing 1466ef3d2322SAdrian Hunter /* 1467ef3d2322SAdrian Hunter * For HS200, CRC errors are not a reliable way to know the 1468ef3d2322SAdrian Hunter * switch failed. If there really is a problem, we would expect 1469ef3d2322SAdrian Hunter * tuning will fail and the result ends up the same. 1470ef3d2322SAdrian Hunter */ 147160db8a47SUlf Hansson err = mmc_switch_status(card, false); 1472ef3d2322SAdrian Hunter 14731815e61bSAdrian Hunter /* 14741815e61bSAdrian Hunter * mmc_select_timing() assumes timing has not changed if 14751815e61bSAdrian Hunter * it is a switch error. 14761815e61bSAdrian Hunter */ 14771815e61bSAdrian Hunter if (err == -EBADMSG) 14781815e61bSAdrian Hunter mmc_set_timing(host, old_timing); 14791815e61bSAdrian Hunter } 1480a4924c71SGirish K S err: 1481e51534c8SDong Aisheng if (err) { 1482e51534c8SDong Aisheng /* fall back to the old signal voltage, if fails report error */ 14834e74b6b3SUlf Hansson if (mmc_set_signal_voltage(host, old_signal_voltage)) 1484e51534c8SDong Aisheng err = -EIO; 1485e51534c8SDong Aisheng 14861815e61bSAdrian Hunter pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), 14871815e61bSAdrian Hunter __func__, err); 1488e51534c8SDong Aisheng } 1489a4924c71SGirish K S return err; 1490a4924c71SGirish K S } 1491a4924c71SGirish K S 1492a4924c71SGirish K S /* 149381ac2af6SShawn Lin * Activate High Speed, HS200 or HS400ES mode if supported. 1494577fb131SSeungwon Jeon */ 1495577fb131SSeungwon Jeon static int mmc_select_timing(struct mmc_card *card) 1496577fb131SSeungwon Jeon { 1497577fb131SSeungwon Jeon int err = 0; 1498577fb131SSeungwon Jeon 1499148bcab2SUlf Hansson if (!mmc_can_ext_csd(card)) 1500577fb131SSeungwon Jeon goto bus_speed; 1501577fb131SSeungwon Jeon 150281ac2af6SShawn Lin if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400ES) 150381ac2af6SShawn Lin err = mmc_select_hs400es(card); 150481ac2af6SShawn Lin else if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200) 1505577fb131SSeungwon Jeon err = mmc_select_hs200(card); 1506577fb131SSeungwon Jeon else if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS) 1507577fb131SSeungwon Jeon err = mmc_select_hs(card); 1508577fb131SSeungwon Jeon 1509577fb131SSeungwon Jeon if (err && err != -EBADMSG) 1510577fb131SSeungwon Jeon return err; 1511577fb131SSeungwon Jeon 1512577fb131SSeungwon Jeon bus_speed: 1513577fb131SSeungwon Jeon /* 1514577fb131SSeungwon Jeon * Set the bus speed to the selected bus timing. 1515577fb131SSeungwon Jeon * If timing is not selected, backward compatible is the default. 1516577fb131SSeungwon Jeon */ 1517577fb131SSeungwon Jeon mmc_set_bus_speed(card); 15180400ed0aSDong Aisheng return 0; 1519577fb131SSeungwon Jeon } 1520577fb131SSeungwon Jeon 1521577fb131SSeungwon Jeon /* 1522577fb131SSeungwon Jeon * Execute tuning sequence to seek the proper bus operating 15230a5b6438SSeungwon Jeon * conditions for HS200 and HS400, which sends CMD21 to the device. 1524577fb131SSeungwon Jeon */ 1525577fb131SSeungwon Jeon static int mmc_hs200_tuning(struct mmc_card *card) 1526577fb131SSeungwon Jeon { 1527577fb131SSeungwon Jeon struct mmc_host *host = card->host; 1528577fb131SSeungwon Jeon 15290a5b6438SSeungwon Jeon /* 15300a5b6438SSeungwon Jeon * Timing should be adjusted to the HS400 target 15310a5b6438SSeungwon Jeon * operation frequency for tuning process 15320a5b6438SSeungwon Jeon */ 15330a5b6438SSeungwon Jeon if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 && 15340a5b6438SSeungwon Jeon host->ios.bus_width == MMC_BUS_WIDTH_8) 15350a5b6438SSeungwon Jeon if (host->ops->prepare_hs400_tuning) 15360a5b6438SSeungwon Jeon host->ops->prepare_hs400_tuning(host, &host->ios); 15370a5b6438SSeungwon Jeon 153863e415c6SAdrian Hunter return mmc_execute_tuning(card); 1539577fb131SSeungwon Jeon } 1540577fb131SSeungwon Jeon 1541577fb131SSeungwon Jeon /* 15426abaa0c9SPierre Ossman * Handle the detection and initialisation of a card. 15436abaa0c9SPierre Ossman * 15448769392bSDeepak Saxena * In the case of a resume, "oldcard" will contain the card 15456abaa0c9SPierre Ossman * we're trying to reinitialise. 15467ea239d9SPierre Ossman */ 15478c75deaeSPierre Ossman static int mmc_init_card(struct mmc_host *host, u32 ocr, 15486abaa0c9SPierre Ossman struct mmc_card *oldcard) 15497ea239d9SPierre Ossman { 15507ea239d9SPierre Ossman struct mmc_card *card; 1551577fb131SSeungwon Jeon int err; 15527ea239d9SPierre Ossman u32 cid[4]; 1553b676f039SPhilip Rakity u32 rocr; 15547ea239d9SPierre Ossman 1555d84075c8SPierre Ossman WARN_ON(!host->claimed); 15567ea239d9SPierre Ossman 155744669034SStefan Nilsson XK /* Set correct bus mode for MMC before attempting init */ 155844669034SStefan Nilsson XK if (!mmc_host_is_spi(host)) 155944669034SStefan Nilsson XK mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); 156044669034SStefan Nilsson XK 15617ea239d9SPierre Ossman /* 15627ea239d9SPierre Ossman * Since we're changing the OCR value, we seem to 15637ea239d9SPierre Ossman * need to tell some cards to go back to the idle 15647ea239d9SPierre Ossman * state. We wait 1ms to give cards time to 15657ea239d9SPierre Ossman * respond. 1566c3805467SBalaji T K * mmc_go_idle is needed for eMMC that are asleep 15677ea239d9SPierre Ossman */ 15687ea239d9SPierre Ossman mmc_go_idle(host); 15697ea239d9SPierre Ossman 15707ea239d9SPierre Ossman /* The extra bit indicates that we support high capacity */ 1571b676f039SPhilip Rakity err = mmc_send_op_cond(host, ocr | (1 << 30), &rocr); 157217b0429dSPierre Ossman if (err) 15736abaa0c9SPierre Ossman goto err; 15747ea239d9SPierre Ossman 15757ea239d9SPierre Ossman /* 1576af517150SDavid Brownell * For SPI, enable CRC as appropriate. 1577af517150SDavid Brownell */ 1578af517150SDavid Brownell if (mmc_host_is_spi(host)) { 1579af517150SDavid Brownell err = mmc_spi_set_crc(host, use_spi_crc); 1580af517150SDavid Brownell if (err) 1581af517150SDavid Brownell goto err; 1582af517150SDavid Brownell } 1583af517150SDavid Brownell 1584af517150SDavid Brownell /* 15857ea239d9SPierre Ossman * Fetch CID from card. 15867ea239d9SPierre Ossman */ 1587af517150SDavid Brownell err = mmc_send_cid(host, cid); 158817b0429dSPierre Ossman if (err) 15897ea239d9SPierre Ossman goto err; 15907ea239d9SPierre Ossman 15916abaa0c9SPierre Ossman if (oldcard) { 1592adf66a0dSPierre Ossman if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) { 1593099b6481Shongjiefang pr_debug("%s: Perhaps the card was replaced\n", 1594099b6481Shongjiefang mmc_hostname(host)); 1595adf66a0dSPierre Ossman err = -ENOENT; 15966abaa0c9SPierre Ossman goto err; 1597adf66a0dSPierre Ossman } 15986abaa0c9SPierre Ossman 15996abaa0c9SPierre Ossman card = oldcard; 16006abaa0c9SPierre Ossman } else { 16017ea239d9SPierre Ossman /* 16027ea239d9SPierre Ossman * Allocate card structure. 16037ea239d9SPierre Ossman */ 160451ec92e2SPierre Ossman card = mmc_alloc_card(host, &mmc_type); 1605adf66a0dSPierre Ossman if (IS_ERR(card)) { 1606adf66a0dSPierre Ossman err = PTR_ERR(card); 16077ea239d9SPierre Ossman goto err; 1608adf66a0dSPierre Ossman } 16097ea239d9SPierre Ossman 161069041150SUlf Hansson card->ocr = ocr; 16117ea239d9SPierre Ossman card->type = MMC_TYPE_MMC; 16127ea239d9SPierre Ossman card->rca = 1; 16137ea239d9SPierre Ossman memcpy(card->raw_cid, cid, sizeof(card->raw_cid)); 16146abaa0c9SPierre Ossman } 16157ea239d9SPierre Ossman 16167ea239d9SPierre Ossman /* 1617eac86321SDoug Anderson * Call the optional HC's init_card function to handle quirks. 1618eac86321SDoug Anderson */ 1619eac86321SDoug Anderson if (host->ops->init_card) 1620eac86321SDoug Anderson host->ops->init_card(host, card); 1621eac86321SDoug Anderson 1622eac86321SDoug Anderson /* 1623af517150SDavid Brownell * For native busses: set card RCA and quit open drain mode. 16247ea239d9SPierre Ossman */ 1625af517150SDavid Brownell if (!mmc_host_is_spi(host)) { 16267ea239d9SPierre Ossman err = mmc_set_relative_addr(card); 162717b0429dSPierre Ossman if (err) 16287ea239d9SPierre Ossman goto free_card; 16297ea239d9SPierre Ossman 16307ea239d9SPierre Ossman mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL); 1631af517150SDavid Brownell } 16327ea239d9SPierre Ossman 16336abaa0c9SPierre Ossman if (!oldcard) { 16347ea239d9SPierre Ossman /* 16357ea239d9SPierre Ossman * Fetch CSD from card. 16367ea239d9SPierre Ossman */ 16377ea239d9SPierre Ossman err = mmc_send_csd(card, card->raw_csd); 163817b0429dSPierre Ossman if (err) 16397ea239d9SPierre Ossman goto free_card; 16407ea239d9SPierre Ossman 1641bd766312SPierre Ossman err = mmc_decode_csd(card); 1642adf66a0dSPierre Ossman if (err) 1643bd766312SPierre Ossman goto free_card; 1644bd766312SPierre Ossman err = mmc_decode_cid(card); 1645adf66a0dSPierre Ossman if (err) 1646bd766312SPierre Ossman goto free_card; 16476abaa0c9SPierre Ossman } 16487ea239d9SPierre Ossman 16497ea239d9SPierre Ossman /* 16503d705d14SSascha Hauer * handling only for cards supporting DSR and hosts requesting 16513d705d14SSascha Hauer * DSR configuration 16523d705d14SSascha Hauer */ 16533d705d14SSascha Hauer if (card->csd.dsr_imp && host->dsr_req) 16543d705d14SSascha Hauer mmc_set_dsr(host); 16553d705d14SSascha Hauer 16563d705d14SSascha Hauer /* 165789a73cf5SPierre Ossman * Select card, as all following commands rely on that. 16587ea239d9SPierre Ossman */ 1659af517150SDavid Brownell if (!mmc_host_is_spi(host)) { 16607ea239d9SPierre Ossman err = mmc_select_card(card); 166117b0429dSPierre Ossman if (err) 16627ea239d9SPierre Ossman goto free_card; 1663af517150SDavid Brownell } 16647ea239d9SPierre Ossman 16656abaa0c9SPierre Ossman if (!oldcard) { 1666076ec38aSUlf Hansson /* Read extended CSD. */ 1667076ec38aSUlf Hansson err = mmc_read_ext_csd(card); 166817b0429dSPierre Ossman if (err) 16697ea239d9SPierre Ossman goto free_card; 1670b676f039SPhilip Rakity 167187e88659SMasahiro Yamada /* 167287e88659SMasahiro Yamada * If doing byte addressing, check if required to do sector 1673b676f039SPhilip Rakity * addressing. Handle the case of <2GB cards needing sector 1674b676f039SPhilip Rakity * addressing. See section 8.1 JEDEC Standard JED84-A441; 1675b676f039SPhilip Rakity * ocr register has bit 30 set for sector addressing. 1676b676f039SPhilip Rakity */ 167787e88659SMasahiro Yamada if (rocr & BIT(30)) 1678b676f039SPhilip Rakity mmc_card_set_blockaddr(card); 1679b676f039SPhilip Rakity 1680dfe86cbaSAdrian Hunter /* Erase size depends on CSD and Extended CSD */ 1681dfe86cbaSAdrian Hunter mmc_set_erase_size(card); 16826abaa0c9SPierre Ossman } 16837ea239d9SPierre Ossman 1684d2a47176SUlf Hansson /* Enable ERASE_GRP_DEF. This bit is lost after a reset or power off. */ 1685d2a47176SUlf Hansson if (card->ext_csd.rev >= 3) { 1686709de99dSChuanxiao Dong err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1687b23cf0bdSSeungwon Jeon EXT_CSD_ERASE_GROUP_DEF, 1, 1688b23cf0bdSSeungwon Jeon card->ext_csd.generic_cmd6_time); 1689709de99dSChuanxiao Dong 1690709de99dSChuanxiao Dong if (err && err != -EBADMSG) 1691709de99dSChuanxiao Dong goto free_card; 1692709de99dSChuanxiao Dong 1693709de99dSChuanxiao Dong if (err) { 1694709de99dSChuanxiao Dong err = 0; 1695709de99dSChuanxiao Dong /* 1696709de99dSChuanxiao Dong * Just disable enhanced area off & sz 1697709de99dSChuanxiao Dong * will try to enable ERASE_GROUP_DEF 1698709de99dSChuanxiao Dong * during next time reinit 1699709de99dSChuanxiao Dong */ 1700709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset = -EINVAL; 1701709de99dSChuanxiao Dong card->ext_csd.enhanced_area_size = -EINVAL; 1702709de99dSChuanxiao Dong } else { 1703709de99dSChuanxiao Dong card->ext_csd.erase_group_def = 1; 1704709de99dSChuanxiao Dong /* 1705709de99dSChuanxiao Dong * enable ERASE_GRP_DEF successfully. 1706709de99dSChuanxiao Dong * This will affect the erase size, so 1707709de99dSChuanxiao Dong * here need to reset erase size 1708709de99dSChuanxiao Dong */ 1709709de99dSChuanxiao Dong mmc_set_erase_size(card); 1710709de99dSChuanxiao Dong } 1711709de99dSChuanxiao Dong } 1712709de99dSChuanxiao Dong 1713709de99dSChuanxiao Dong /* 171441e2a489SPhilip Rakity * Ensure eMMC user default partition is enabled 171541e2a489SPhilip Rakity */ 1716371a689fSAndrei Warkentin if (card->ext_csd.part_config & EXT_CSD_PART_CONFIG_ACC_MASK) { 1717371a689fSAndrei Warkentin card->ext_csd.part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK; 1718371a689fSAndrei Warkentin err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONFIG, 1719371a689fSAndrei Warkentin card->ext_csd.part_config, 1720371a689fSAndrei Warkentin card->ext_csd.part_time); 1721371a689fSAndrei Warkentin if (err && err != -EBADMSG) 1722371a689fSAndrei Warkentin goto free_card; 172341e2a489SPhilip Rakity } 172441e2a489SPhilip Rakity 172541e2a489SPhilip Rakity /* 172643235679SUlf Hansson * Enable power_off_notification byte in the ext_csd register 1727bec8726aSGirish K S */ 172843235679SUlf Hansson if (card->ext_csd.rev >= 6) { 1729bec8726aSGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1730bec8726aSGirish K S EXT_CSD_POWER_OFF_NOTIFICATION, 1731bec8726aSGirish K S EXT_CSD_POWER_ON, 1732bec8726aSGirish K S card->ext_csd.generic_cmd6_time); 1733bec8726aSGirish K S if (err && err != -EBADMSG) 1734bec8726aSGirish K S goto free_card; 1735bec8726aSGirish K S 173696a85d54SGirish K S /* 173796a85d54SGirish K S * The err can be -EBADMSG or 0, 173896a85d54SGirish K S * so check for success and update the flag 173996a85d54SGirish K S */ 1740bec8726aSGirish K S if (!err) 1741e6c08586SUlf Hansson card->ext_csd.power_off_notification = EXT_CSD_POWER_ON; 174296a85d54SGirish K S } 1743bec8726aSGirish K S 174401904ff7SAvri Altman /* set erase_arg */ 174501904ff7SAvri Altman if (mmc_can_discard(card)) 174601904ff7SAvri Altman card->erase_arg = MMC_DISCARD_ARG; 174701904ff7SAvri Altman else if (mmc_can_trim(card)) 174801904ff7SAvri Altman card->erase_arg = MMC_TRIM_ARG; 174901904ff7SAvri Altman else 175001904ff7SAvri Altman card->erase_arg = MMC_ERASE_ARG; 175101904ff7SAvri Altman 1752bec8726aSGirish K S /* 1753577fb131SSeungwon Jeon * Select timing interface 175489a73cf5SPierre Ossman */ 1755577fb131SSeungwon Jeon err = mmc_select_timing(card); 1756577fb131SSeungwon Jeon if (err) 175789a73cf5SPierre Ossman goto free_card; 175889a73cf5SPierre Ossman 1759a4924c71SGirish K S if (mmc_card_hs200(card)) { 1760577fb131SSeungwon Jeon err = mmc_hs200_tuning(card); 17614c4cb171SPhilip Rakity if (err) 17624b75bffcSAndrew Gabbasov goto free_card; 17630a5b6438SSeungwon Jeon 17640a5b6438SSeungwon Jeon err = mmc_select_hs400(card); 17650a5b6438SSeungwon Jeon if (err) 17664b75bffcSAndrew Gabbasov goto free_card; 1767773dc118SGuenter Roeck } else if (!mmc_card_hs400es(card)) { 1768577fb131SSeungwon Jeon /* Select the desired bus width optionally */ 1769577fb131SSeungwon Jeon err = mmc_select_bus_width(card); 17703d4ef329SAnssi Hannula if (err > 0 && mmc_card_hs(card)) { 1771577fb131SSeungwon Jeon err = mmc_select_hs_ddr(card); 1772577fb131SSeungwon Jeon if (err) 17734b75bffcSAndrew Gabbasov goto free_card; 177489a73cf5SPierre Ossman } 1775ef0b27d4SAdrian Hunter } 177689a73cf5SPierre Ossman 1777881d1c25SSeungwon Jeon /* 17782385049dSSeungwon Jeon * Choose the power class with selected bus interface 17792385049dSSeungwon Jeon */ 17802385049dSSeungwon Jeon mmc_select_powerclass(card); 17812385049dSSeungwon Jeon 17822385049dSSeungwon Jeon /* 178352d0974eSSubhash Jadavani * Enable HPI feature (if supported) 178452d0974eSSubhash Jadavani */ 178552d0974eSSubhash Jadavani if (card->ext_csd.hpi) { 178652d0974eSSubhash Jadavani err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 178752d0974eSSubhash Jadavani EXT_CSD_HPI_MGMT, 1, 178852d0974eSSubhash Jadavani card->ext_csd.generic_cmd6_time); 178952d0974eSSubhash Jadavani if (err && err != -EBADMSG) 179052d0974eSSubhash Jadavani goto free_card; 179152d0974eSSubhash Jadavani if (err) { 17926606110dSJoe Perches pr_warn("%s: Enabling HPI failed\n", 179352d0974eSSubhash Jadavani mmc_hostname(card->host)); 1794a0741ba4SUlf Hansson card->ext_csd.hpi_en = 0; 179552d0974eSSubhash Jadavani err = 0; 1796a0741ba4SUlf Hansson } else { 179752d0974eSSubhash Jadavani card->ext_csd.hpi_en = 1; 179852d0974eSSubhash Jadavani } 1799a0741ba4SUlf Hansson } 180052d0974eSSubhash Jadavani 180152d0974eSSubhash Jadavani /* 1802e3ae3401SUlf Hansson * If cache size is higher than 0, this indicates the existence of cache 1803e3ae3401SUlf Hansson * and it can be turned on. Note that some eMMCs from Micron has been 1804e3ae3401SUlf Hansson * reported to need ~800 ms timeout, while enabling the cache after 1805e3ae3401SUlf Hansson * sudden power failure tests. Let's extend the timeout to a minimum of 1806e3ae3401SUlf Hansson * DEFAULT_CACHE_EN_TIMEOUT_MS and do it for all cards. 1807881d1c25SSeungwon Jeon */ 1808ba9f39a7SUlf Hansson if (card->ext_csd.cache_size > 0) { 1809e3ae3401SUlf Hansson unsigned int timeout_ms = MIN_CACHE_EN_TIMEOUT_MS; 1810e3ae3401SUlf Hansson 1811e3ae3401SUlf Hansson timeout_ms = max(card->ext_csd.generic_cmd6_time, timeout_ms); 1812881d1c25SSeungwon Jeon err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1813e3ae3401SUlf Hansson EXT_CSD_CACHE_CTRL, 1, timeout_ms); 1814881d1c25SSeungwon Jeon if (err && err != -EBADMSG) 1815881d1c25SSeungwon Jeon goto free_card; 1816881d1c25SSeungwon Jeon 1817881d1c25SSeungwon Jeon /* 1818881d1c25SSeungwon Jeon * Only if no error, cache is turned on successfully. 1819881d1c25SSeungwon Jeon */ 18208bc0678bSSeungwon Jeon if (err) { 18216606110dSJoe Perches pr_warn("%s: Cache is supported, but failed to turn on (%d)\n", 18228bc0678bSSeungwon Jeon mmc_hostname(card->host), err); 18238bc0678bSSeungwon Jeon card->ext_csd.cache_ctrl = 0; 18248bc0678bSSeungwon Jeon err = 0; 18258bc0678bSSeungwon Jeon } else { 18268bc0678bSSeungwon Jeon card->ext_csd.cache_ctrl = 1; 18278bc0678bSSeungwon Jeon } 1828881d1c25SSeungwon Jeon } 1829881d1c25SSeungwon Jeon 1830abd9ac14SSeungwon Jeon /* 183198d4f780SAdrian Hunter * Enable Command Queue if supported. Note that Packed Commands cannot 183298d4f780SAdrian Hunter * be used with Command Queue. 183398d4f780SAdrian Hunter */ 183498d4f780SAdrian Hunter card->ext_csd.cmdq_en = false; 183598d4f780SAdrian Hunter if (card->ext_csd.cmdq_support && host->caps2 & MMC_CAP2_CQE) { 183698d4f780SAdrian Hunter err = mmc_cmdq_enable(card); 183798d4f780SAdrian Hunter if (err && err != -EBADMSG) 183898d4f780SAdrian Hunter goto free_card; 183998d4f780SAdrian Hunter if (err) { 184098d4f780SAdrian Hunter pr_warn("%s: Enabling CMDQ failed\n", 184198d4f780SAdrian Hunter mmc_hostname(card->host)); 184298d4f780SAdrian Hunter card->ext_csd.cmdq_support = false; 184398d4f780SAdrian Hunter card->ext_csd.cmdq_depth = 0; 184498d4f780SAdrian Hunter err = 0; 184598d4f780SAdrian Hunter } 184698d4f780SAdrian Hunter } 184798d4f780SAdrian Hunter /* 18489d4579a8SAdrian Hunter * In some cases (e.g. RPMB or mmc_test), the Command Queue must be 18499d4579a8SAdrian Hunter * disabled for a time, so a flag is needed to indicate to re-enable the 18509d4579a8SAdrian Hunter * Command Queue. 18519d4579a8SAdrian Hunter */ 18529d4579a8SAdrian Hunter card->reenable_cmdq = card->ext_csd.cmdq_en; 18539d4579a8SAdrian Hunter 1854511ce378SBaolin Wang if (host->cqe_ops && !host->cqe_enabled) { 1855f690f440SAdrian Hunter err = host->cqe_ops->cqe_enable(host, card); 1856511ce378SBaolin Wang if (!err) { 1857f690f440SAdrian Hunter host->cqe_enabled = true; 1858511ce378SBaolin Wang 1859511ce378SBaolin Wang if (card->ext_csd.cmdq_en) { 1860f690f440SAdrian Hunter pr_info("%s: Command Queue Engine enabled\n", 1861f690f440SAdrian Hunter mmc_hostname(host)); 1862511ce378SBaolin Wang } else { 1863511ce378SBaolin Wang host->hsq_enabled = true; 1864511ce378SBaolin Wang pr_info("%s: Host Software Queue enabled\n", 1865511ce378SBaolin Wang mmc_hostname(host)); 1866511ce378SBaolin Wang } 1867f690f440SAdrian Hunter } 1868f690f440SAdrian Hunter } 1869f690f440SAdrian Hunter 1870247cfe53SKyle Roeschley if (host->caps2 & MMC_CAP2_AVOID_3_3V && 1871247cfe53SKyle Roeschley host->ios.signal_voltage == MMC_SIGNAL_VOLTAGE_330) { 1872247cfe53SKyle Roeschley pr_err("%s: Host failed to negotiate down from 3.3V\n", 1873247cfe53SKyle Roeschley mmc_hostname(host)); 1874247cfe53SKyle Roeschley err = -EINVAL; 1875247cfe53SKyle Roeschley goto free_card; 1876247cfe53SKyle Roeschley } 1877247cfe53SKyle Roeschley 18786abaa0c9SPierre Ossman if (!oldcard) 18797ea239d9SPierre Ossman host->card = card; 18807ea239d9SPierre Ossman 188117b0429dSPierre Ossman return 0; 18826abaa0c9SPierre Ossman 18836abaa0c9SPierre Ossman free_card: 18846abaa0c9SPierre Ossman if (!oldcard) 18856abaa0c9SPierre Ossman mmc_remove_card(card); 18866abaa0c9SPierre Ossman err: 1887adf66a0dSPierre Ossman return err; 18886abaa0c9SPierre Ossman } 18896abaa0c9SPierre Ossman 189007a68216SUlf Hansson static int mmc_can_sleep(struct mmc_card *card) 189107a68216SUlf Hansson { 189207a68216SUlf Hansson return (card && card->ext_csd.rev >= 3); 189307a68216SUlf Hansson } 189407a68216SUlf Hansson 189507a68216SUlf Hansson static int mmc_sleep(struct mmc_host *host) 189607a68216SUlf Hansson { 1897c7836d15SMasahiro Yamada struct mmc_command cmd = {}; 189807a68216SUlf Hansson struct mmc_card *card = host->card; 1899cb962e04SUlf Hansson unsigned int timeout_ms = DIV_ROUND_UP(card->ext_csd.sa_timeout, 10000); 190007a68216SUlf Hansson int err; 190107a68216SUlf Hansson 1902436f8daaSAdrian Hunter /* Re-tuning can't be done once the card is deselected */ 1903436f8daaSAdrian Hunter mmc_retune_hold(host); 1904436f8daaSAdrian Hunter 190507a68216SUlf Hansson err = mmc_deselect_cards(host); 190607a68216SUlf Hansson if (err) 1907436f8daaSAdrian Hunter goto out_release; 190807a68216SUlf Hansson 190907a68216SUlf Hansson cmd.opcode = MMC_SLEEP_AWAKE; 191007a68216SUlf Hansson cmd.arg = card->rca << 16; 191107a68216SUlf Hansson cmd.arg |= 1 << 15; 191207a68216SUlf Hansson 1913cb962e04SUlf Hansson /* 1914cb962e04SUlf Hansson * If the max_busy_timeout of the host is specified, validate it against 1915cb962e04SUlf Hansson * the sleep cmd timeout. A failure means we need to prevent the host 1916cb962e04SUlf Hansson * from doing hw busy detection, which is done by converting to a R1 191718d20046SUlf Hansson * response instead of a R1B. Note, some hosts requires R1B, which also 191818d20046SUlf Hansson * means they are on their own when it comes to deal with the busy 191918d20046SUlf Hansson * timeout. 1920cb962e04SUlf Hansson */ 192118d20046SUlf Hansson if (!(host->caps & MMC_CAP_NEED_RSP_BUSY) && host->max_busy_timeout && 192218d20046SUlf Hansson (timeout_ms > host->max_busy_timeout)) { 1923cb962e04SUlf Hansson cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; 1924cb962e04SUlf Hansson } else { 192507a68216SUlf Hansson cmd.flags = MMC_RSP_R1B | MMC_CMD_AC; 1926cb962e04SUlf Hansson cmd.busy_timeout = timeout_ms; 1927cb962e04SUlf Hansson } 1928cb962e04SUlf Hansson 192907a68216SUlf Hansson err = mmc_wait_for_cmd(host, &cmd, 0); 193007a68216SUlf Hansson if (err) 1931436f8daaSAdrian Hunter goto out_release; 193207a68216SUlf Hansson 193307a68216SUlf Hansson /* 193407a68216SUlf Hansson * If the host does not wait while the card signals busy, then we will 193507a68216SUlf Hansson * will have to wait the sleep/awake timeout. Note, we cannot use the 193607a68216SUlf Hansson * SEND_STATUS command to poll the status because that command (and most 193707a68216SUlf Hansson * others) is invalid while the card sleeps. 193807a68216SUlf Hansson */ 1939cb962e04SUlf Hansson if (!cmd.busy_timeout || !(host->caps & MMC_CAP_WAIT_WHILE_BUSY)) 1940cb962e04SUlf Hansson mmc_delay(timeout_ms); 194107a68216SUlf Hansson 1942436f8daaSAdrian Hunter out_release: 1943436f8daaSAdrian Hunter mmc_retune_release(host); 194407a68216SUlf Hansson return err; 194507a68216SUlf Hansson } 194607a68216SUlf Hansson 1947e6c08586SUlf Hansson static int mmc_can_poweroff_notify(const struct mmc_card *card) 1948e6c08586SUlf Hansson { 1949e6c08586SUlf Hansson return card && 1950e6c08586SUlf Hansson mmc_card_mmc(card) && 1951e6c08586SUlf Hansson (card->ext_csd.power_off_notification == EXT_CSD_POWER_ON); 1952e6c08586SUlf Hansson } 1953e6c08586SUlf Hansson 1954e6c08586SUlf Hansson static int mmc_poweroff_notify(struct mmc_card *card, unsigned int notify_type) 1955e6c08586SUlf Hansson { 1956e6c08586SUlf Hansson unsigned int timeout = card->ext_csd.generic_cmd6_time; 1957e6c08586SUlf Hansson int err; 1958e6c08586SUlf Hansson 1959e6c08586SUlf Hansson /* Use EXT_CSD_POWER_OFF_SHORT as default notification type. */ 1960e6c08586SUlf Hansson if (notify_type == EXT_CSD_POWER_OFF_LONG) 1961e6c08586SUlf Hansson timeout = card->ext_csd.power_off_longtime; 1962e6c08586SUlf Hansson 1963878e200bSUlf Hansson err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1964e6c08586SUlf Hansson EXT_CSD_POWER_OFF_NOTIFICATION, 1965aa33ce3cSUlf Hansson notify_type, timeout, 0, true, false, false); 1966e6c08586SUlf Hansson if (err) 1967e6c08586SUlf Hansson pr_err("%s: Power Off Notification timed out, %u\n", 1968e6c08586SUlf Hansson mmc_hostname(card->host), timeout); 1969e6c08586SUlf Hansson 1970e6c08586SUlf Hansson /* Disable the power off notification after the switch operation. */ 1971e6c08586SUlf Hansson card->ext_csd.power_off_notification = EXT_CSD_NO_POWER_NOTIFICATION; 1972e6c08586SUlf Hansson 1973e6c08586SUlf Hansson return err; 1974e6c08586SUlf Hansson } 1975e6c08586SUlf Hansson 19766abaa0c9SPierre Ossman /* 19776abaa0c9SPierre Ossman * Host is being removed. Free up the current card. 19786abaa0c9SPierre Ossman */ 19796abaa0c9SPierre Ossman static void mmc_remove(struct mmc_host *host) 19806abaa0c9SPierre Ossman { 19816abaa0c9SPierre Ossman mmc_remove_card(host->card); 19826abaa0c9SPierre Ossman host->card = NULL; 19836abaa0c9SPierre Ossman } 19846abaa0c9SPierre Ossman 19856abaa0c9SPierre Ossman /* 1986d3049504SAdrian Hunter * Card detection - card is alive. 1987d3049504SAdrian Hunter */ 1988d3049504SAdrian Hunter static int mmc_alive(struct mmc_host *host) 1989d3049504SAdrian Hunter { 1990d3049504SAdrian Hunter return mmc_send_status(host->card, NULL); 1991d3049504SAdrian Hunter } 1992d3049504SAdrian Hunter 1993d3049504SAdrian Hunter /* 19946abaa0c9SPierre Ossman * Card detection callback from host. 19956abaa0c9SPierre Ossman */ 19966abaa0c9SPierre Ossman static void mmc_detect(struct mmc_host *host) 19976abaa0c9SPierre Ossman { 19986abaa0c9SPierre Ossman int err; 19996abaa0c9SPierre Ossman 20006c0cedd1SAdrian Hunter mmc_get_card(host->card, NULL); 20016abaa0c9SPierre Ossman 20026abaa0c9SPierre Ossman /* 20036abaa0c9SPierre Ossman * Just check if our card has been removed. 20046abaa0c9SPierre Ossman */ 2005d3049504SAdrian Hunter err = _mmc_detect_card_removed(host); 20066abaa0c9SPierre Ossman 20076c0cedd1SAdrian Hunter mmc_put_card(host->card, NULL); 20087ea239d9SPierre Ossman 200917b0429dSPierre Ossman if (err) { 20104101c16aSPierre Ossman mmc_remove(host); 20116abaa0c9SPierre Ossman 20126abaa0c9SPierre Ossman mmc_claim_host(host); 20136abaa0c9SPierre Ossman mmc_detach_bus(host); 20147f7e4129SUlf Hansson mmc_power_off(host); 20156abaa0c9SPierre Ossman mmc_release_host(host); 20166abaa0c9SPierre Ossman } 20176abaa0c9SPierre Ossman } 20186abaa0c9SPierre Ossman 201903d071fcSUlf Hansson static int _mmc_suspend(struct mmc_host *host, bool is_suspend) 20206abaa0c9SPierre Ossman { 2021c3805467SBalaji T K int err = 0; 202203d071fcSUlf Hansson unsigned int notify_type = is_suspend ? EXT_CSD_POWER_OFF_SHORT : 202303d071fcSUlf Hansson EXT_CSD_POWER_OFF_LONG; 2024c3805467SBalaji T K 20256abaa0c9SPierre Ossman mmc_claim_host(host); 2026881d926dSMaya Erez 20279ec775f7SUlf Hansson if (mmc_card_suspended(host->card)) 20289ec775f7SUlf Hansson goto out; 20299ec775f7SUlf Hansson 203010e5d965SUlf Hansson err = mmc_flush_cache(host->card); 2031881d926dSMaya Erez if (err) 2032881d926dSMaya Erez goto out; 2033881d926dSMaya Erez 203443235679SUlf Hansson if (mmc_can_poweroff_notify(host->card) && 203553275c21SUlf Hansson ((host->caps2 & MMC_CAP2_FULL_PWR_CYCLE) || !is_suspend)) 203603d071fcSUlf Hansson err = mmc_poweroff_notify(host->card, notify_type); 203707a68216SUlf Hansson else if (mmc_can_sleep(host->card)) 203807a68216SUlf Hansson err = mmc_sleep(host); 2039e6c08586SUlf Hansson else if (!mmc_host_is_spi(host)) 204085e727edSJaehoon Chung err = mmc_deselect_cards(host); 204195cdfb72SNicolas Pitre 20429ec775f7SUlf Hansson if (!err) { 204374590263SUlf Hansson mmc_power_off(host); 20449ec775f7SUlf Hansson mmc_card_set_suspended(host->card); 20459ec775f7SUlf Hansson } 2046881d926dSMaya Erez out: 2047881d926dSMaya Erez mmc_release_host(host); 2048c3805467SBalaji T K return err; 20496abaa0c9SPierre Ossman } 20506abaa0c9SPierre Ossman 20516abaa0c9SPierre Ossman /* 20520cb403a2SUlf Hansson * Suspend callback 205303d071fcSUlf Hansson */ 205403d071fcSUlf Hansson static int mmc_suspend(struct mmc_host *host) 205503d071fcSUlf Hansson { 20560cb403a2SUlf Hansson int err; 20570cb403a2SUlf Hansson 20580cb403a2SUlf Hansson err = _mmc_suspend(host, true); 20590cb403a2SUlf Hansson if (!err) { 20600cb403a2SUlf Hansson pm_runtime_disable(&host->card->dev); 20610cb403a2SUlf Hansson pm_runtime_set_suspended(&host->card->dev); 20620cb403a2SUlf Hansson } 20630cb403a2SUlf Hansson 20640cb403a2SUlf Hansson return err; 206503d071fcSUlf Hansson } 206603d071fcSUlf Hansson 206703d071fcSUlf Hansson /* 20686abaa0c9SPierre Ossman * This function tries to determine if the same card is still present 20696abaa0c9SPierre Ossman * and, if so, restore all state to it. 20706abaa0c9SPierre Ossman */ 20710cb403a2SUlf Hansson static int _mmc_resume(struct mmc_host *host) 20726abaa0c9SPierre Ossman { 20739ec775f7SUlf Hansson int err = 0; 20746abaa0c9SPierre Ossman 20756abaa0c9SPierre Ossman mmc_claim_host(host); 20769ec775f7SUlf Hansson 20779ec775f7SUlf Hansson if (!mmc_card_suspended(host->card)) 20789ec775f7SUlf Hansson goto out; 20799ec775f7SUlf Hansson 208069041150SUlf Hansson mmc_power_up(host, host->card->ocr); 208169041150SUlf Hansson err = mmc_init_card(host, host->card->ocr, host->card); 20829ec775f7SUlf Hansson mmc_card_clr_suspended(host->card); 20832986d0bfSPierre Ossman 20849ec775f7SUlf Hansson out: 20859ec775f7SUlf Hansson mmc_release_host(host); 208695cdfb72SNicolas Pitre return err; 20876abaa0c9SPierre Ossman } 20886abaa0c9SPierre Ossman 20899ec775f7SUlf Hansson /* 20909ec775f7SUlf Hansson * Shutdown callback 20919ec775f7SUlf Hansson */ 20929ec775f7SUlf Hansson static int mmc_shutdown(struct mmc_host *host) 20939ec775f7SUlf Hansson { 20949ec775f7SUlf Hansson int err = 0; 20959ec775f7SUlf Hansson 20969ec775f7SUlf Hansson /* 20979ec775f7SUlf Hansson * In a specific case for poweroff notify, we need to resume the card 20989ec775f7SUlf Hansson * before we can shutdown it properly. 20999ec775f7SUlf Hansson */ 21009ec775f7SUlf Hansson if (mmc_can_poweroff_notify(host->card) && 21019ec775f7SUlf Hansson !(host->caps2 & MMC_CAP2_FULL_PWR_CYCLE)) 21020cb403a2SUlf Hansson err = _mmc_resume(host); 21039ec775f7SUlf Hansson 21049ec775f7SUlf Hansson if (!err) 21059ec775f7SUlf Hansson err = _mmc_suspend(host, false); 21069ec775f7SUlf Hansson 21079ec775f7SUlf Hansson return err; 21089ec775f7SUlf Hansson } 2109c4d770d7SUlf Hansson 2110c4d770d7SUlf Hansson /* 21110cb403a2SUlf Hansson * Callback for resume. 21120cb403a2SUlf Hansson */ 21130cb403a2SUlf Hansson static int mmc_resume(struct mmc_host *host) 21140cb403a2SUlf Hansson { 21150cb403a2SUlf Hansson pm_runtime_enable(&host->card->dev); 2116c29536e8SUlf Hansson return 0; 21170cb403a2SUlf Hansson } 21180cb403a2SUlf Hansson 21190cb403a2SUlf Hansson /* 2120c4d770d7SUlf Hansson * Callback for runtime_suspend. 2121c4d770d7SUlf Hansson */ 2122c4d770d7SUlf Hansson static int mmc_runtime_suspend(struct mmc_host *host) 2123c4d770d7SUlf Hansson { 2124c4d770d7SUlf Hansson int err; 2125c4d770d7SUlf Hansson 2126c4d770d7SUlf Hansson if (!(host->caps & MMC_CAP_AGGRESSIVE_PM)) 2127c4d770d7SUlf Hansson return 0; 2128c4d770d7SUlf Hansson 21290cb403a2SUlf Hansson err = _mmc_suspend(host, true); 21300cc81a8cSUlf Hansson if (err) 2131f42cf8d6SMasanari Iida pr_err("%s: error %d doing aggressive suspend\n", 2132c4d770d7SUlf Hansson mmc_hostname(host), err); 2133c4d770d7SUlf Hansson 2134c4d770d7SUlf Hansson return err; 2135c4d770d7SUlf Hansson } 2136c4d770d7SUlf Hansson 2137c4d770d7SUlf Hansson /* 2138c4d770d7SUlf Hansson * Callback for runtime_resume. 2139c4d770d7SUlf Hansson */ 2140c4d770d7SUlf Hansson static int mmc_runtime_resume(struct mmc_host *host) 2141c4d770d7SUlf Hansson { 2142c4d770d7SUlf Hansson int err; 2143c4d770d7SUlf Hansson 21440cb403a2SUlf Hansson err = _mmc_resume(host); 2145520322d9SAdrian Hunter if (err && err != -ENOMEDIUM) 2146c29536e8SUlf Hansson pr_err("%s: error %d doing runtime resume\n", 2147c4d770d7SUlf Hansson mmc_hostname(host), err); 2148c4d770d7SUlf Hansson 2149c4d770d7SUlf Hansson return 0; 2150c4d770d7SUlf Hansson } 2151c4d770d7SUlf Hansson 215288bed3a6SUlf Hansson static int mmc_can_reset(struct mmc_card *card) 2153f855a371SJohan Rudholm { 2154f855a371SJohan Rudholm u8 rst_n_function; 2155f855a371SJohan Rudholm 2156f855a371SJohan Rudholm rst_n_function = card->ext_csd.rst_n_function; 2157f855a371SJohan Rudholm if ((rst_n_function & EXT_CSD_RST_N_EN_MASK) != EXT_CSD_RST_N_ENABLED) 2158f855a371SJohan Rudholm return 0; 2159f855a371SJohan Rudholm return 1; 2160f855a371SJohan Rudholm } 2161f855a371SJohan Rudholm 21623a3db603SUlf Hansson static int _mmc_hw_reset(struct mmc_host *host) 2163f855a371SJohan Rudholm { 2164f855a371SJohan Rudholm struct mmc_card *card = host->card; 2165f855a371SJohan Rudholm 2166437db4c6SAdrian Hunter /* 2167437db4c6SAdrian Hunter * In the case of recovery, we can't expect flushing the cache to work 2168437db4c6SAdrian Hunter * always, but we have a go and ignore errors. 2169437db4c6SAdrian Hunter */ 2170437db4c6SAdrian Hunter mmc_flush_cache(host->card); 2171437db4c6SAdrian Hunter 21724e6c7178SGwendal Grignou if ((host->caps & MMC_CAP_HW_RESET) && host->ops->hw_reset && 21734e6c7178SGwendal Grignou mmc_can_reset(card)) { 21744e6c7178SGwendal Grignou /* If the card accept RST_n signal, send it. */ 2175f855a371SJohan Rudholm mmc_set_clock(host, host->f_init); 2176f855a371SJohan Rudholm host->ops->hw_reset(host); 2177f855a371SJohan Rudholm /* Set initial state and call mmc_set_ios */ 2178f855a371SJohan Rudholm mmc_set_initial_state(host); 21794e6c7178SGwendal Grignou } else { 21804e6c7178SGwendal Grignou /* Do a brute force power cycle */ 21814e6c7178SGwendal Grignou mmc_power_cycle(host, card->ocr); 218252c8212dSUlf Hansson mmc_pwrseq_reset(host); 21834e6c7178SGwendal Grignou } 2184364549ddSUlf Hansson return mmc_init_card(host, card->ocr, card); 2185f855a371SJohan Rudholm } 2186f855a371SJohan Rudholm 21879feae246SAdrian Hunter static const struct mmc_bus_ops mmc_ops = { 21889feae246SAdrian Hunter .remove = mmc_remove, 21899feae246SAdrian Hunter .detect = mmc_detect, 21909feae246SAdrian Hunter .suspend = mmc_suspend, 21919feae246SAdrian Hunter .resume = mmc_resume, 2192c4d770d7SUlf Hansson .runtime_suspend = mmc_runtime_suspend, 2193c4d770d7SUlf Hansson .runtime_resume = mmc_runtime_resume, 2194d3049504SAdrian Hunter .alive = mmc_alive, 2195486fdbbcSUlf Hansson .shutdown = mmc_shutdown, 21963a3db603SUlf Hansson .hw_reset = _mmc_hw_reset, 21979feae246SAdrian Hunter }; 21989feae246SAdrian Hunter 21996abaa0c9SPierre Ossman /* 22006abaa0c9SPierre Ossman * Starting point for MMC card init. 22016abaa0c9SPierre Ossman */ 2202807e8e40SAndy Ross int mmc_attach_mmc(struct mmc_host *host) 22036abaa0c9SPierre Ossman { 22046abaa0c9SPierre Ossman int err; 220569041150SUlf Hansson u32 ocr, rocr; 22066abaa0c9SPierre Ossman 2207d84075c8SPierre Ossman WARN_ON(!host->claimed); 22086abaa0c9SPierre Ossman 220944669034SStefan Nilsson XK /* Set correct bus mode for MMC before attempting attach */ 221044669034SStefan Nilsson XK if (!mmc_host_is_spi(host)) 221144669034SStefan Nilsson XK mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); 221244669034SStefan Nilsson XK 2213807e8e40SAndy Ross err = mmc_send_op_cond(host, 0, &ocr); 2214807e8e40SAndy Ross if (err) 2215807e8e40SAndy Ross return err; 2216807e8e40SAndy Ross 22172501c917SUlf Hansson mmc_attach_bus(host, &mmc_ops); 22188f230f45STakashi Iwai if (host->ocr_avail_mmc) 22198f230f45STakashi Iwai host->ocr_avail = host->ocr_avail_mmc; 22206abaa0c9SPierre Ossman 22216abaa0c9SPierre Ossman /* 2222af517150SDavid Brownell * We need to get OCR a different way for SPI. 2223af517150SDavid Brownell */ 2224af517150SDavid Brownell if (mmc_host_is_spi(host)) { 2225af517150SDavid Brownell err = mmc_spi_read_ocr(host, 1, &ocr); 2226af517150SDavid Brownell if (err) 2227af517150SDavid Brownell goto err; 2228af517150SDavid Brownell } 2229af517150SDavid Brownell 223069041150SUlf Hansson rocr = mmc_select_voltage(host, ocr); 22316abaa0c9SPierre Ossman 22326abaa0c9SPierre Ossman /* 22336abaa0c9SPierre Ossman * Can we support the voltage of the card? 22346abaa0c9SPierre Ossman */ 223569041150SUlf Hansson if (!rocr) { 2236109b5bedSPierre Ossman err = -EINVAL; 22376abaa0c9SPierre Ossman goto err; 2238109b5bedSPierre Ossman } 22396abaa0c9SPierre Ossman 22406abaa0c9SPierre Ossman /* 22416abaa0c9SPierre Ossman * Detect and init the card. 22426abaa0c9SPierre Ossman */ 224369041150SUlf Hansson err = mmc_init_card(host, rocr, NULL); 224417b0429dSPierre Ossman if (err) 22456abaa0c9SPierre Ossman goto err; 22466abaa0c9SPierre Ossman 22476abaa0c9SPierre Ossman mmc_release_host(host); 22484101c16aSPierre Ossman err = mmc_add_card(host->card); 22497ea239d9SPierre Ossman if (err) 22502986d0bfSPierre Ossman goto remove_card; 22517ea239d9SPierre Ossman 22522860d060SSergei Shtylyov mmc_claim_host(host); 22537ea239d9SPierre Ossman return 0; 22547ea239d9SPierre Ossman 22552986d0bfSPierre Ossman remove_card: 22566abaa0c9SPierre Ossman mmc_remove_card(host->card); 22572986d0bfSPierre Ossman mmc_claim_host(host); 2258807e8e40SAndy Ross host->card = NULL; 22597ea239d9SPierre Ossman err: 22607ea239d9SPierre Ossman mmc_detach_bus(host); 22617ea239d9SPierre Ossman 2262a3c76eb9SGirish K S pr_err("%s: error %d whilst initialising MMC card\n", 2263109b5bedSPierre Ossman mmc_hostname(host), err); 2264109b5bedSPierre Ossman 2265adf66a0dSPierre Ossman return err; 22667ea239d9SPierre Ossman } 2267