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 } 650064f7e58SKrishna Konda card->ext_csd.enhanced_rpmb_supported = 651064f7e58SKrishna Konda (card->ext_csd.rel_param & 652064f7e58SKrishna Konda EXT_CSD_WR_REL_PARAM_EN_RPMB_REL_WR); 653925ff3a7SAdrian Hunter } 6547ea239d9SPierre Ossman out: 65508ee80ccSPhilip Rakity return err; 65608ee80ccSPhilip Rakity } 6577ea239d9SPierre Ossman 658076ec38aSUlf Hansson static int mmc_read_ext_csd(struct mmc_card *card) 659076ec38aSUlf Hansson { 660c197787cSUlf Hansson u8 *ext_csd; 661076ec38aSUlf Hansson int err; 662076ec38aSUlf Hansson 663c197787cSUlf Hansson if (!mmc_can_ext_csd(card)) 664c197787cSUlf Hansson return 0; 665c197787cSUlf Hansson 666076ec38aSUlf Hansson err = mmc_get_ext_csd(card, &ext_csd); 667c197787cSUlf Hansson if (err) { 668c197787cSUlf Hansson /* If the host or the card can't do the switch, 669c197787cSUlf Hansson * fail more gracefully. */ 670c197787cSUlf Hansson if ((err != -EINVAL) 671c197787cSUlf Hansson && (err != -ENOSYS) 672c197787cSUlf Hansson && (err != -EFAULT)) 673076ec38aSUlf Hansson return err; 674076ec38aSUlf Hansson 675c197787cSUlf Hansson /* 676c197787cSUlf Hansson * High capacity cards should have this "magic" size 677c197787cSUlf Hansson * stored in their CSD. 678c197787cSUlf Hansson */ 679c197787cSUlf Hansson if (card->csd.capacity == (4096 * 512)) { 680c197787cSUlf Hansson pr_err("%s: unable to read EXT_CSD on a possible high capacity card. Card will be ignored.\n", 681c197787cSUlf Hansson mmc_hostname(card->host)); 682c197787cSUlf Hansson } else { 683c197787cSUlf Hansson pr_warn("%s: unable to read EXT_CSD, performance might suffer\n", 684c197787cSUlf Hansson mmc_hostname(card->host)); 685c197787cSUlf Hansson err = 0; 686c197787cSUlf Hansson } 687c197787cSUlf Hansson 688c197787cSUlf Hansson return err; 689c197787cSUlf Hansson } 690c197787cSUlf Hansson 691076ec38aSUlf Hansson err = mmc_decode_ext_csd(card, ext_csd); 692076ec38aSUlf Hansson kfree(ext_csd); 693076ec38aSUlf Hansson return err; 694076ec38aSUlf Hansson } 695076ec38aSUlf Hansson 696f39b2dd9SPhilip Rakity static int mmc_compare_ext_csds(struct mmc_card *card, unsigned bus_width) 69708ee80ccSPhilip Rakity { 69808ee80ccSPhilip Rakity u8 *bw_ext_csd; 69908ee80ccSPhilip Rakity int err; 70008ee80ccSPhilip Rakity 701f39b2dd9SPhilip Rakity if (bus_width == MMC_BUS_WIDTH_1) 702f39b2dd9SPhilip Rakity return 0; 70308ee80ccSPhilip Rakity 704f39b2dd9SPhilip Rakity err = mmc_get_ext_csd(card, &bw_ext_csd); 705c197787cSUlf Hansson if (err) 706c197787cSUlf Hansson return err; 70708ee80ccSPhilip Rakity 70808ee80ccSPhilip Rakity /* only compare read only fields */ 709dd13b4edSJurgen Heeks err = !((card->ext_csd.raw_partition_support == 71008ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_PARTITION_SUPPORT]) && 711f39b2dd9SPhilip Rakity (card->ext_csd.raw_erased_mem_count == 71208ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_ERASED_MEM_CONT]) && 713f39b2dd9SPhilip Rakity (card->ext_csd.rev == 71408ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_REV]) && 715f39b2dd9SPhilip Rakity (card->ext_csd.raw_ext_csd_structure == 71608ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_STRUCTURE]) && 717f39b2dd9SPhilip Rakity (card->ext_csd.raw_card_type == 71808ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_CARD_TYPE]) && 719f39b2dd9SPhilip Rakity (card->ext_csd.raw_s_a_timeout == 72008ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_S_A_TIMEOUT]) && 721f39b2dd9SPhilip Rakity (card->ext_csd.raw_hc_erase_gap_size == 72208ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_HC_WP_GRP_SIZE]) && 723f39b2dd9SPhilip Rakity (card->ext_csd.raw_erase_timeout_mult == 72408ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]) && 725f39b2dd9SPhilip Rakity (card->ext_csd.raw_hc_erase_grp_size == 72608ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]) && 727f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_trim_mult == 72808ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_TRIM_MULT]) && 729f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_erase_mult == 73008ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_ERASE_MULT]) && 731f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_feature_support == 73208ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]) && 733f39b2dd9SPhilip Rakity (card->ext_csd.raw_trim_mult == 73408ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_TRIM_MULT]) && 735f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[0] == 736f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 0]) && 737f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[1] == 738f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 1]) && 739f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[2] == 740f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 2]) && 741f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[3] == 74260443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_SEC_CNT + 3]) && 74360443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_52_195 == 74460443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_52_195]) && 74560443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_26_195 == 74660443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_26_195]) && 74760443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_52_360 == 74860443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_52_360]) && 74960443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_26_360 == 75060443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_26_360]) && 75160443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_200_195 == 75260443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_200_195]) && 75360443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_200_360 == 75460443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_200_360]) && 75560443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_ddr_52_195 == 75660443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_195]) && 75760443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_ddr_52_360 == 7580a5b6438SSeungwon Jeon bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_360]) && 7590a5b6438SSeungwon Jeon (card->ext_csd.raw_pwr_cl_ddr_200_360 == 7600a5b6438SSeungwon Jeon bw_ext_csd[EXT_CSD_PWR_CL_DDR_200_360])); 7610a5b6438SSeungwon Jeon 76208ee80ccSPhilip Rakity if (err) 76308ee80ccSPhilip Rakity err = -EINVAL; 76408ee80ccSPhilip Rakity 76500b41b58SUlf Hansson kfree(bw_ext_csd); 7667ea239d9SPierre Ossman return err; 7677ea239d9SPierre Ossman } 7687ea239d9SPierre Ossman 76951ec92e2SPierre Ossman MMC_DEV_ATTR(cid, "%08x%08x%08x%08x\n", card->raw_cid[0], card->raw_cid[1], 77051ec92e2SPierre Ossman card->raw_cid[2], card->raw_cid[3]); 77151ec92e2SPierre Ossman MMC_DEV_ATTR(csd, "%08x%08x%08x%08x\n", card->raw_csd[0], card->raw_csd[1], 77251ec92e2SPierre Ossman card->raw_csd[2], card->raw_csd[3]); 77351ec92e2SPierre Ossman MMC_DEV_ATTR(date, "%02d/%04d\n", card->cid.month, card->cid.year); 774dfe86cbaSAdrian Hunter MMC_DEV_ATTR(erase_size, "%u\n", card->erase_size << 9); 775dfe86cbaSAdrian Hunter MMC_DEV_ATTR(preferred_erase_size, "%u\n", card->pref_erase << 9); 7760f762426SGwendal Grignou MMC_DEV_ATTR(ffu_capable, "%d\n", card->ext_csd.ffu_capable); 77751ec92e2SPierre Ossman MMC_DEV_ATTR(hwrev, "0x%x\n", card->cid.hwrev); 77851ec92e2SPierre Ossman MMC_DEV_ATTR(manfid, "0x%06x\n", card->cid.manfid); 77951ec92e2SPierre Ossman MMC_DEV_ATTR(name, "%s\n", card->cid.prod_name); 78051ec92e2SPierre Ossman MMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid); 78151e7e8b6SBernie Thompson MMC_DEV_ATTR(prv, "0x%x\n", card->cid.prv); 78204fa0540SJin Qian MMC_DEV_ATTR(rev, "0x%x\n", card->ext_csd.rev); 78380a780a1SBastian Stender MMC_DEV_ATTR(pre_eol_info, "0x%02x\n", card->ext_csd.pre_eol_info); 78446bc5c40SJungseung Lee MMC_DEV_ATTR(life_time, "0x%02x 0x%02x\n", 78546bc5c40SJungseung Lee card->ext_csd.device_life_time_est_typ_a, 78646bc5c40SJungseung Lee card->ext_csd.device_life_time_est_typ_b); 78751ec92e2SPierre Ossman MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial); 788709de99dSChuanxiao Dong MMC_DEV_ATTR(enhanced_area_offset, "%llu\n", 789709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset); 790709de99dSChuanxiao Dong MMC_DEV_ATTR(enhanced_area_size, "%u\n", card->ext_csd.enhanced_area_size); 791188cc042SLoic Pallardy MMC_DEV_ATTR(raw_rpmb_size_mult, "%#x\n", card->ext_csd.raw_rpmb_size_mult); 792064f7e58SKrishna Konda MMC_DEV_ATTR(enhanced_rpmb_supported, "%#x\n", 793064f7e58SKrishna Konda card->ext_csd.enhanced_rpmb_supported); 794188cc042SLoic Pallardy MMC_DEV_ATTR(rel_sectors, "%#x\n", card->ext_csd.rel_sectors); 795c892b0d8SBastian Stender MMC_DEV_ATTR(ocr, "0x%08x\n", card->ocr); 796974e85e9SHarish Jenny K N MMC_DEV_ATTR(rca, "0x%04x\n", card->rca); 797b658af71SAdrian Hunter MMC_DEV_ATTR(cmdq_en, "%d\n", card->ext_csd.cmdq_en); 79851ec92e2SPierre Ossman 7990f762426SGwendal Grignou static ssize_t mmc_fwrev_show(struct device *dev, 8000f762426SGwendal Grignou struct device_attribute *attr, 8010f762426SGwendal Grignou char *buf) 8020f762426SGwendal Grignou { 8030f762426SGwendal Grignou struct mmc_card *card = mmc_dev_to_card(dev); 8040f762426SGwendal Grignou 8050f762426SGwendal Grignou if (card->ext_csd.rev < 7) { 8060f762426SGwendal Grignou return sprintf(buf, "0x%x\n", card->cid.fwrev); 8070f762426SGwendal Grignou } else { 8080f762426SGwendal Grignou return sprintf(buf, "0x%*phN\n", MMC_FIRMWARE_LEN, 8090f762426SGwendal Grignou card->ext_csd.fwrev); 8100f762426SGwendal Grignou } 8110f762426SGwendal Grignou } 8120f762426SGwendal Grignou 8130f762426SGwendal Grignou static DEVICE_ATTR(fwrev, S_IRUGO, mmc_fwrev_show, NULL); 8140f762426SGwendal Grignou 8156825a606SBojan Prtvar static ssize_t mmc_dsr_show(struct device *dev, 8166825a606SBojan Prtvar struct device_attribute *attr, 8176825a606SBojan Prtvar char *buf) 8186825a606SBojan Prtvar { 8196825a606SBojan Prtvar struct mmc_card *card = mmc_dev_to_card(dev); 8206825a606SBojan Prtvar struct mmc_host *host = card->host; 8216825a606SBojan Prtvar 8226825a606SBojan Prtvar if (card->csd.dsr_imp && host->dsr_req) 8236825a606SBojan Prtvar return sprintf(buf, "0x%x\n", host->dsr); 8246825a606SBojan Prtvar else 8256825a606SBojan Prtvar /* return default DSR value */ 8266825a606SBojan Prtvar return sprintf(buf, "0x%x\n", 0x404); 8276825a606SBojan Prtvar } 8286825a606SBojan Prtvar 8296825a606SBojan Prtvar static DEVICE_ATTR(dsr, S_IRUGO, mmc_dsr_show, NULL); 8306825a606SBojan Prtvar 83151ec92e2SPierre Ossman static struct attribute *mmc_std_attrs[] = { 83251ec92e2SPierre Ossman &dev_attr_cid.attr, 83351ec92e2SPierre Ossman &dev_attr_csd.attr, 83451ec92e2SPierre Ossman &dev_attr_date.attr, 835dfe86cbaSAdrian Hunter &dev_attr_erase_size.attr, 836dfe86cbaSAdrian Hunter &dev_attr_preferred_erase_size.attr, 83751ec92e2SPierre Ossman &dev_attr_fwrev.attr, 8380f762426SGwendal Grignou &dev_attr_ffu_capable.attr, 83951ec92e2SPierre Ossman &dev_attr_hwrev.attr, 84051ec92e2SPierre Ossman &dev_attr_manfid.attr, 84151ec92e2SPierre Ossman &dev_attr_name.attr, 84251ec92e2SPierre Ossman &dev_attr_oemid.attr, 84351e7e8b6SBernie Thompson &dev_attr_prv.attr, 84404fa0540SJin Qian &dev_attr_rev.attr, 84546bc5c40SJungseung Lee &dev_attr_pre_eol_info.attr, 84646bc5c40SJungseung Lee &dev_attr_life_time.attr, 84751ec92e2SPierre Ossman &dev_attr_serial.attr, 848709de99dSChuanxiao Dong &dev_attr_enhanced_area_offset.attr, 849709de99dSChuanxiao Dong &dev_attr_enhanced_area_size.attr, 850188cc042SLoic Pallardy &dev_attr_raw_rpmb_size_mult.attr, 851064f7e58SKrishna Konda &dev_attr_enhanced_rpmb_supported.attr, 852188cc042SLoic Pallardy &dev_attr_rel_sectors.attr, 8535fb06af7SBojan Prtvar &dev_attr_ocr.attr, 854974e85e9SHarish Jenny K N &dev_attr_rca.attr, 8556825a606SBojan Prtvar &dev_attr_dsr.attr, 856b658af71SAdrian Hunter &dev_attr_cmdq_en.attr, 85751ec92e2SPierre Ossman NULL, 85851ec92e2SPierre Ossman }; 859d1e58212SAxel Lin ATTRIBUTE_GROUPS(mmc_std); 86051ec92e2SPierre Ossman 86151ec92e2SPierre Ossman static struct device_type mmc_type = { 862d1e58212SAxel Lin .groups = mmc_std_groups, 86351ec92e2SPierre Ossman }; 86451ec92e2SPierre Ossman 8657ea239d9SPierre Ossman /* 866b87d8dbfSGirish K S * Select the PowerClass for the current bus width 867b87d8dbfSGirish K S * If power class is defined for 4/8 bit bus in the 868b87d8dbfSGirish K S * extended CSD register, select it by executing the 869b87d8dbfSGirish K S * mmc_switch command. 870b87d8dbfSGirish K S */ 8712385049dSSeungwon Jeon static int __mmc_select_powerclass(struct mmc_card *card, 87260443712SFredrik Soderstedt unsigned int bus_width) 873b87d8dbfSGirish K S { 8742385049dSSeungwon Jeon struct mmc_host *host = card->host; 8752385049dSSeungwon Jeon struct mmc_ext_csd *ext_csd = &card->ext_csd; 87660443712SFredrik Soderstedt unsigned int pwrclass_val = 0; 8772385049dSSeungwon Jeon int err = 0; 878b87d8dbfSGirish K S 879b87d8dbfSGirish K S switch (1 << host->ios.vdd) { 880b87d8dbfSGirish K S case MMC_VDD_165_195: 8812385049dSSeungwon Jeon if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) 8822385049dSSeungwon Jeon pwrclass_val = ext_csd->raw_pwr_cl_26_195; 8832385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR) 88460443712SFredrik Soderstedt pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? 8852385049dSSeungwon Jeon ext_csd->raw_pwr_cl_52_195 : 8862385049dSSeungwon Jeon ext_csd->raw_pwr_cl_ddr_52_195; 8872385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HS200_MAX_DTR) 8882385049dSSeungwon Jeon pwrclass_val = ext_csd->raw_pwr_cl_200_195; 889b87d8dbfSGirish K S break; 89093fc5a47SSubhash Jadavani case MMC_VDD_27_28: 89193fc5a47SSubhash Jadavani case MMC_VDD_28_29: 89293fc5a47SSubhash Jadavani case MMC_VDD_29_30: 89393fc5a47SSubhash Jadavani case MMC_VDD_30_31: 89493fc5a47SSubhash Jadavani case MMC_VDD_31_32: 895b87d8dbfSGirish K S case MMC_VDD_32_33: 896b87d8dbfSGirish K S case MMC_VDD_33_34: 897b87d8dbfSGirish K S case MMC_VDD_34_35: 898b87d8dbfSGirish K S case MMC_VDD_35_36: 8992385049dSSeungwon Jeon if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) 9002385049dSSeungwon Jeon pwrclass_val = ext_csd->raw_pwr_cl_26_360; 9012385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR) 90260443712SFredrik Soderstedt pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? 9032385049dSSeungwon Jeon ext_csd->raw_pwr_cl_52_360 : 9042385049dSSeungwon Jeon ext_csd->raw_pwr_cl_ddr_52_360; 9052385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HS200_MAX_DTR) 9060a5b6438SSeungwon Jeon pwrclass_val = (bus_width == EXT_CSD_DDR_BUS_WIDTH_8) ? 9070a5b6438SSeungwon Jeon ext_csd->raw_pwr_cl_ddr_200_360 : 9080a5b6438SSeungwon Jeon ext_csd->raw_pwr_cl_200_360; 909b87d8dbfSGirish K S break; 910b87d8dbfSGirish K S default: 9116606110dSJoe Perches pr_warn("%s: Voltage range not supported for power class\n", 9126606110dSJoe Perches mmc_hostname(host)); 913b87d8dbfSGirish K S return -EINVAL; 914b87d8dbfSGirish K S } 915b87d8dbfSGirish K S 916b87d8dbfSGirish K S if (bus_width & (EXT_CSD_BUS_WIDTH_8 | EXT_CSD_DDR_BUS_WIDTH_8)) 917b87d8dbfSGirish K S pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_8BIT_MASK) >> 918b87d8dbfSGirish K S EXT_CSD_PWR_CL_8BIT_SHIFT; 919b87d8dbfSGirish K S else 920b87d8dbfSGirish K S pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_4BIT_MASK) >> 921b87d8dbfSGirish K S EXT_CSD_PWR_CL_4BIT_SHIFT; 922b87d8dbfSGirish K S 923b87d8dbfSGirish K S /* If the power class is different from the default value */ 924b87d8dbfSGirish K S if (pwrclass_val > 0) { 925b87d8dbfSGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 926b87d8dbfSGirish K S EXT_CSD_POWER_CLASS, 927b87d8dbfSGirish K S pwrclass_val, 92871fe3eb0SSeungwon Jeon card->ext_csd.generic_cmd6_time); 929b87d8dbfSGirish K S } 930b87d8dbfSGirish K S 931b87d8dbfSGirish K S return err; 932b87d8dbfSGirish K S } 933b87d8dbfSGirish K S 9342385049dSSeungwon Jeon static int mmc_select_powerclass(struct mmc_card *card) 9352385049dSSeungwon Jeon { 9362385049dSSeungwon Jeon struct mmc_host *host = card->host; 9372385049dSSeungwon Jeon u32 bus_width, ext_csd_bits; 9382385049dSSeungwon Jeon int err, ddr; 9392385049dSSeungwon Jeon 9402385049dSSeungwon Jeon /* Power class selection is supported for versions >= 4.0 */ 941148bcab2SUlf Hansson if (!mmc_can_ext_csd(card)) 9422385049dSSeungwon Jeon return 0; 9432385049dSSeungwon Jeon 9442385049dSSeungwon Jeon bus_width = host->ios.bus_width; 9452385049dSSeungwon Jeon /* Power class values are defined only for 4/8 bit bus */ 9462385049dSSeungwon Jeon if (bus_width == MMC_BUS_WIDTH_1) 9472385049dSSeungwon Jeon return 0; 9482385049dSSeungwon Jeon 9492385049dSSeungwon Jeon ddr = card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52; 9502385049dSSeungwon Jeon if (ddr) 9512385049dSSeungwon Jeon ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? 9522385049dSSeungwon Jeon EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; 9532385049dSSeungwon Jeon else 9542385049dSSeungwon Jeon ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? 9552385049dSSeungwon Jeon EXT_CSD_BUS_WIDTH_8 : EXT_CSD_BUS_WIDTH_4; 9562385049dSSeungwon Jeon 9572385049dSSeungwon Jeon err = __mmc_select_powerclass(card, ext_csd_bits); 9582385049dSSeungwon Jeon if (err) 9592385049dSSeungwon Jeon pr_warn("%s: power class selection to bus width %d ddr %d failed\n", 9602385049dSSeungwon Jeon mmc_hostname(host), 1 << bus_width, ddr); 9612385049dSSeungwon Jeon 9622385049dSSeungwon Jeon return err; 9632385049dSSeungwon Jeon } 9642385049dSSeungwon Jeon 965b87d8dbfSGirish K S /* 966577fb131SSeungwon Jeon * Set the bus speed for the selected speed mode. 967a4924c71SGirish K S */ 968577fb131SSeungwon Jeon static void mmc_set_bus_speed(struct mmc_card *card) 969a4924c71SGirish K S { 970577fb131SSeungwon Jeon unsigned int max_dtr = (unsigned int)-1; 971577fb131SSeungwon Jeon 9720a5b6438SSeungwon Jeon if ((mmc_card_hs200(card) || mmc_card_hs400(card)) && 9730a5b6438SSeungwon Jeon max_dtr > card->ext_csd.hs200_max_dtr) 974577fb131SSeungwon Jeon max_dtr = card->ext_csd.hs200_max_dtr; 975577fb131SSeungwon Jeon else if (mmc_card_hs(card) && max_dtr > card->ext_csd.hs_max_dtr) 976577fb131SSeungwon Jeon max_dtr = card->ext_csd.hs_max_dtr; 977577fb131SSeungwon Jeon else if (max_dtr > card->csd.max_dtr) 978577fb131SSeungwon Jeon max_dtr = card->csd.max_dtr; 979577fb131SSeungwon Jeon 980577fb131SSeungwon Jeon mmc_set_clock(card->host, max_dtr); 981577fb131SSeungwon Jeon } 982577fb131SSeungwon Jeon 983577fb131SSeungwon Jeon /* 984577fb131SSeungwon Jeon * Select the bus width amoung 4-bit and 8-bit(SDR). 985577fb131SSeungwon Jeon * If the bus width is changed successfully, return the selected width value. 986577fb131SSeungwon Jeon * Zero is returned instead of error value if the wide width is not supported. 987577fb131SSeungwon Jeon */ 988577fb131SSeungwon Jeon static int mmc_select_bus_width(struct mmc_card *card) 989577fb131SSeungwon Jeon { 990a4924c71SGirish K S static unsigned ext_csd_bits[] = { 991a4924c71SGirish K S EXT_CSD_BUS_WIDTH_8, 992577fb131SSeungwon Jeon EXT_CSD_BUS_WIDTH_4, 993a4924c71SGirish K S }; 994a4924c71SGirish K S static unsigned bus_widths[] = { 995a4924c71SGirish K S MMC_BUS_WIDTH_8, 996577fb131SSeungwon Jeon MMC_BUS_WIDTH_4, 997a4924c71SGirish K S }; 998577fb131SSeungwon Jeon struct mmc_host *host = card->host; 999577fb131SSeungwon Jeon unsigned idx, bus_width = 0; 1000577fb131SSeungwon Jeon int err = 0; 1001a4924c71SGirish K S 10021c2d26e3SAlexandre Belloni if (!mmc_can_ext_csd(card) || 1003577fb131SSeungwon Jeon !(host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) 1004577fb131SSeungwon Jeon return 0; 1005a4924c71SGirish K S 1006577fb131SSeungwon Jeon idx = (host->caps & MMC_CAP_8_BIT_DATA) ? 0 : 1; 1007a4924c71SGirish K S 1008a4924c71SGirish K S /* 1009a4924c71SGirish K S * Unlike SD, MMC cards dont have a configuration register to notify 1010a4924c71SGirish K S * supported bus width. So bus test command should be run to identify 1011a4924c71SGirish K S * the supported bus width or compare the ext csd values of current 1012a4924c71SGirish K S * bus width and ext csd values of 1 bit mode read earlier. 1013a4924c71SGirish K S */ 1014577fb131SSeungwon Jeon for (; idx < ARRAY_SIZE(bus_widths); idx++) { 1015a4924c71SGirish K S /* 1016a4924c71SGirish K S * Host is capable of 8bit transfer, then switch 1017a4924c71SGirish K S * the device to work in 8bit transfer mode. If the 1018a4924c71SGirish K S * mmc switch command returns error then switch to 1019a4924c71SGirish K S * 4bit transfer mode. On success set the corresponding 1020a4924c71SGirish K S * bus width on the host. 1021a4924c71SGirish K S */ 1022a4924c71SGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1023a4924c71SGirish K S EXT_CSD_BUS_WIDTH, 1024a4924c71SGirish K S ext_csd_bits[idx], 1025a4924c71SGirish K S card->ext_csd.generic_cmd6_time); 1026a4924c71SGirish K S if (err) 1027a4924c71SGirish K S continue; 1028a4924c71SGirish K S 1029577fb131SSeungwon Jeon bus_width = bus_widths[idx]; 1030577fb131SSeungwon Jeon mmc_set_bus_width(host, bus_width); 1031a4924c71SGirish K S 1032577fb131SSeungwon Jeon /* 1033577fb131SSeungwon Jeon * If controller can't handle bus width test, 1034577fb131SSeungwon Jeon * compare ext_csd previously read in 1 bit mode 1035577fb131SSeungwon Jeon * against ext_csd at new bus width 1036577fb131SSeungwon Jeon */ 1037a4924c71SGirish K S if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST)) 1038577fb131SSeungwon Jeon err = mmc_compare_ext_csds(card, bus_width); 1039a4924c71SGirish K S else 1040577fb131SSeungwon Jeon err = mmc_bus_test(card, bus_width); 1041577fb131SSeungwon Jeon 1042577fb131SSeungwon Jeon if (!err) { 1043577fb131SSeungwon Jeon err = bus_width; 1044a4924c71SGirish K S break; 1045577fb131SSeungwon Jeon } else { 1046577fb131SSeungwon Jeon pr_warn("%s: switch to bus width %d failed\n", 1047ed9feec7SWolfram Sang mmc_hostname(host), 1 << bus_width); 1048577fb131SSeungwon Jeon } 1049a4924c71SGirish K S } 1050a4924c71SGirish K S 1051577fb131SSeungwon Jeon return err; 1052577fb131SSeungwon Jeon } 1053577fb131SSeungwon Jeon 1054577fb131SSeungwon Jeon /* 1055577fb131SSeungwon Jeon * Switch to the high-speed mode 1056577fb131SSeungwon Jeon */ 1057577fb131SSeungwon Jeon static int mmc_select_hs(struct mmc_card *card) 1058577fb131SSeungwon Jeon { 1059577fb131SSeungwon Jeon int err; 1060577fb131SSeungwon Jeon 10614509f847SUlf Hansson err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1062577fb131SSeungwon Jeon EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS, 106353e60650SUlf Hansson card->ext_csd.generic_cmd6_time, MMC_TIMING_MMC_HS, 106402098ccdSUlf Hansson true, true); 106567d35960SJungseung Lee if (err) 106667d35960SJungseung Lee pr_warn("%s: switch to high-speed failed, err:%d\n", 106767d35960SJungseung Lee mmc_hostname(card->host), err); 106867d35960SJungseung Lee 1069577fb131SSeungwon Jeon return err; 1070577fb131SSeungwon Jeon } 1071577fb131SSeungwon Jeon 1072577fb131SSeungwon Jeon /* 1073577fb131SSeungwon Jeon * Activate wide bus and DDR if supported. 1074577fb131SSeungwon Jeon */ 1075577fb131SSeungwon Jeon static int mmc_select_hs_ddr(struct mmc_card *card) 1076577fb131SSeungwon Jeon { 1077577fb131SSeungwon Jeon struct mmc_host *host = card->host; 1078577fb131SSeungwon Jeon u32 bus_width, ext_csd_bits; 1079577fb131SSeungwon Jeon int err = 0; 1080577fb131SSeungwon Jeon 1081577fb131SSeungwon Jeon if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52)) 1082577fb131SSeungwon Jeon return 0; 1083577fb131SSeungwon Jeon 1084577fb131SSeungwon Jeon bus_width = host->ios.bus_width; 1085577fb131SSeungwon Jeon if (bus_width == MMC_BUS_WIDTH_1) 1086577fb131SSeungwon Jeon return 0; 1087577fb131SSeungwon Jeon 1088577fb131SSeungwon Jeon ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? 1089577fb131SSeungwon Jeon EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; 1090577fb131SSeungwon Jeon 1091e173f891SUlf Hansson err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1092577fb131SSeungwon Jeon EXT_CSD_BUS_WIDTH, 1093577fb131SSeungwon Jeon ext_csd_bits, 1094e173f891SUlf Hansson card->ext_csd.generic_cmd6_time, 1095e173f891SUlf Hansson MMC_TIMING_MMC_DDR52, 109602098ccdSUlf Hansson true, true); 1097577fb131SSeungwon Jeon if (err) { 10984b75bffcSAndrew Gabbasov pr_err("%s: switch to bus width %d ddr failed\n", 1099577fb131SSeungwon Jeon mmc_hostname(host), 1 << bus_width); 1100577fb131SSeungwon Jeon return err; 1101577fb131SSeungwon Jeon } 1102577fb131SSeungwon Jeon 1103577fb131SSeungwon Jeon /* 1104577fb131SSeungwon Jeon * eMMC cards can support 3.3V to 1.2V i/o (vccq) 1105577fb131SSeungwon Jeon * signaling. 1106577fb131SSeungwon Jeon * 1107577fb131SSeungwon Jeon * EXT_CSD_CARD_TYPE_DDR_1_8V means 3.3V or 1.8V vccq. 1108577fb131SSeungwon Jeon * 1109577fb131SSeungwon Jeon * 1.8V vccq at 3.3V core voltage (vcc) is not required 1110577fb131SSeungwon Jeon * in the JEDEC spec for DDR. 1111577fb131SSeungwon Jeon * 1112312449efSChuanxiao.Dong * Even (e)MMC card can support 3.3v to 1.2v vccq, but not all 1113312449efSChuanxiao.Dong * host controller can support this, like some of the SDHCI 1114312449efSChuanxiao.Dong * controller which connect to an eMMC device. Some of these 1115312449efSChuanxiao.Dong * host controller still needs to use 1.8v vccq for supporting 1116312449efSChuanxiao.Dong * DDR mode. 1117312449efSChuanxiao.Dong * 1118312449efSChuanxiao.Dong * So the sequence will be: 1119312449efSChuanxiao.Dong * if (host and device can both support 1.2v IO) 1120312449efSChuanxiao.Dong * use 1.2v IO; 1121312449efSChuanxiao.Dong * else if (host and device can both support 1.8v IO) 1122312449efSChuanxiao.Dong * use 1.8v IO; 1123312449efSChuanxiao.Dong * so if host and device can only support 3.3v IO, this is the 1124312449efSChuanxiao.Dong * last choice. 1125577fb131SSeungwon Jeon * 1126577fb131SSeungwon Jeon * WARNING: eMMC rules are NOT the same as SD DDR 1127577fb131SSeungwon Jeon */ 112820f921bbSUlf Hansson if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_2V) { 11294e74b6b3SUlf Hansson err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); 113020f921bbSUlf Hansson if (!err) 113120f921bbSUlf Hansson return 0; 113220f921bbSUlf Hansson } 1133577fb131SSeungwon Jeon 113420f921bbSUlf Hansson if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_8V && 113520f921bbSUlf Hansson host->caps & MMC_CAP_1_8V_DDR) 11364e74b6b3SUlf Hansson err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); 1137312449efSChuanxiao.Dong 1138312449efSChuanxiao.Dong /* make sure vccq is 3.3v after switching disaster */ 1139312449efSChuanxiao.Dong if (err) 11404e74b6b3SUlf Hansson err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330); 1141312449efSChuanxiao.Dong 1142577fb131SSeungwon Jeon return err; 1143577fb131SSeungwon Jeon } 1144577fb131SSeungwon Jeon 11450a5b6438SSeungwon Jeon static int mmc_select_hs400(struct mmc_card *card) 11460a5b6438SSeungwon Jeon { 11470a5b6438SSeungwon Jeon struct mmc_host *host = card->host; 114851b12f77SAdrian Hunter unsigned int max_dtr; 11490a5b6438SSeungwon Jeon int err = 0; 1150cc4f414cSAdrian Hunter u8 val; 11510a5b6438SSeungwon Jeon 11520a5b6438SSeungwon Jeon /* 11530a5b6438SSeungwon Jeon * HS400 mode requires 8-bit bus width 11540a5b6438SSeungwon Jeon */ 11550a5b6438SSeungwon Jeon if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 && 11560a5b6438SSeungwon Jeon host->ios.bus_width == MMC_BUS_WIDTH_8)) 11570a5b6438SSeungwon Jeon return 0; 11580a5b6438SSeungwon Jeon 115951b12f77SAdrian Hunter /* Switch card to HS mode */ 1160adb24d42SWenkai Du val = EXT_CSD_TIMING_HS; 11610a5b6438SSeungwon Jeon err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1162cc4f414cSAdrian Hunter EXT_CSD_HS_TIMING, val, 1163aa33ce3cSUlf Hansson card->ext_csd.generic_cmd6_time, 0, 116402098ccdSUlf Hansson false, true); 11650a5b6438SSeungwon Jeon if (err) { 11664b75bffcSAndrew Gabbasov pr_err("%s: switch to high-speed from hs200 failed, err:%d\n", 11670a5b6438SSeungwon Jeon mmc_hostname(host), err); 11680a5b6438SSeungwon Jeon return err; 11690a5b6438SSeungwon Jeon } 11700a5b6438SSeungwon Jeon 1171ba6c7ac3SSimon Horman /* Prepare host to downgrade to HS timing */ 1172ba6c7ac3SSimon Horman if (host->ops->hs400_downgrade) 1173ba6c7ac3SSimon Horman host->ops->hs400_downgrade(host); 1174ba6c7ac3SSimon Horman 117524fdcb37SWolfram Sang /* Set host controller to HS timing */ 1176452f553eSWolfram Sang mmc_set_timing(host, MMC_TIMING_MMC_HS); 117724fdcb37SWolfram Sang 1178649c6059SZiyuan Xu /* Reduce frequency to HS frequency */ 1179649c6059SZiyuan Xu max_dtr = card->ext_csd.hs_max_dtr; 1180649c6059SZiyuan Xu mmc_set_clock(host, max_dtr); 1181649c6059SZiyuan Xu 118260db8a47SUlf Hansson err = mmc_switch_status(card, true); 1183d2302933SAdrian Hunter if (err) 1184d2302933SAdrian Hunter goto out_err; 1185d2302933SAdrian Hunter 1186cc14eec0SYinbo Zhu if (host->ops->hs400_prepare_ddr) 1187cc14eec0SYinbo Zhu host->ops->hs400_prepare_ddr(host); 1188cc14eec0SYinbo Zhu 1189d2302933SAdrian Hunter /* Switch card to DDR */ 11900a5b6438SSeungwon Jeon err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 11910a5b6438SSeungwon Jeon EXT_CSD_BUS_WIDTH, 11920a5b6438SSeungwon Jeon EXT_CSD_DDR_BUS_WIDTH_8, 11930a5b6438SSeungwon Jeon card->ext_csd.generic_cmd6_time); 11940a5b6438SSeungwon Jeon if (err) { 11954b75bffcSAndrew Gabbasov pr_err("%s: switch to bus width for hs400 failed, err:%d\n", 11960a5b6438SSeungwon Jeon mmc_hostname(host), err); 11970a5b6438SSeungwon Jeon return err; 11980a5b6438SSeungwon Jeon } 11990a5b6438SSeungwon Jeon 1200d2302933SAdrian Hunter /* Switch card to HS400 */ 1201cc4f414cSAdrian Hunter val = EXT_CSD_TIMING_HS400 | 1202cc4f414cSAdrian Hunter card->drive_strength << EXT_CSD_DRV_STR_SHIFT; 12030a5b6438SSeungwon Jeon err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1204cc4f414cSAdrian Hunter EXT_CSD_HS_TIMING, val, 1205aa33ce3cSUlf Hansson card->ext_csd.generic_cmd6_time, 0, 120602098ccdSUlf Hansson false, true); 12070a5b6438SSeungwon Jeon if (err) { 12084b75bffcSAndrew Gabbasov pr_err("%s: switch to hs400 failed, err:%d\n", 12090a5b6438SSeungwon Jeon mmc_hostname(host), err); 12100a5b6438SSeungwon Jeon return err; 12110a5b6438SSeungwon Jeon } 12120a5b6438SSeungwon Jeon 1213d2302933SAdrian Hunter /* Set host controller to HS400 timing and frequency */ 12140a5b6438SSeungwon Jeon mmc_set_timing(host, MMC_TIMING_MMC_HS400); 12150a5b6438SSeungwon Jeon mmc_set_bus_speed(card); 12160a5b6438SSeungwon Jeon 1217b0e370b9SWolfram Sang if (host->ops->hs400_complete) 1218b0e370b9SWolfram Sang host->ops->hs400_complete(host); 1219b0e370b9SWolfram Sang 122060db8a47SUlf Hansson err = mmc_switch_status(card, true); 1221d2302933SAdrian Hunter if (err) 1222d2302933SAdrian Hunter goto out_err; 1223d2302933SAdrian Hunter 12240a5b6438SSeungwon Jeon return 0; 1225d2302933SAdrian Hunter 1226d2302933SAdrian Hunter out_err: 1227d2302933SAdrian Hunter pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), 1228d2302933SAdrian Hunter __func__, err); 1229d2302933SAdrian Hunter return err; 12300a5b6438SSeungwon Jeon } 12310a5b6438SSeungwon Jeon 12326376f69dSAdrian Hunter int mmc_hs200_to_hs400(struct mmc_card *card) 12336376f69dSAdrian Hunter { 12346376f69dSAdrian Hunter return mmc_select_hs400(card); 12356376f69dSAdrian Hunter } 12366376f69dSAdrian Hunter 12376376f69dSAdrian Hunter int mmc_hs400_to_hs200(struct mmc_card *card) 12386376f69dSAdrian Hunter { 12396376f69dSAdrian Hunter struct mmc_host *host = card->host; 12406376f69dSAdrian Hunter unsigned int max_dtr; 12416376f69dSAdrian Hunter int err; 1242cc4f414cSAdrian Hunter u8 val; 12436376f69dSAdrian Hunter 12446376f69dSAdrian Hunter /* Reduce frequency to HS */ 12456376f69dSAdrian Hunter max_dtr = card->ext_csd.hs_max_dtr; 12466376f69dSAdrian Hunter mmc_set_clock(host, max_dtr); 12476376f69dSAdrian Hunter 12486376f69dSAdrian Hunter /* Switch HS400 to HS DDR */ 1249adb24d42SWenkai Du val = EXT_CSD_TIMING_HS; 12506376f69dSAdrian Hunter err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, 1251aa33ce3cSUlf Hansson val, card->ext_csd.generic_cmd6_time, 0, 125202098ccdSUlf Hansson false, true); 12536376f69dSAdrian Hunter if (err) 12546376f69dSAdrian Hunter goto out_err; 12556376f69dSAdrian Hunter 125624fdcb37SWolfram Sang if (host->ops->hs400_downgrade) 125724fdcb37SWolfram Sang host->ops->hs400_downgrade(host); 125824fdcb37SWolfram Sang 12596376f69dSAdrian Hunter mmc_set_timing(host, MMC_TIMING_MMC_DDR52); 12606376f69dSAdrian Hunter 126160db8a47SUlf Hansson err = mmc_switch_status(card, true); 12626376f69dSAdrian Hunter if (err) 12636376f69dSAdrian Hunter goto out_err; 12646376f69dSAdrian Hunter 12656376f69dSAdrian Hunter /* Switch HS DDR to HS */ 12666376f69dSAdrian Hunter err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BUS_WIDTH, 12676376f69dSAdrian Hunter EXT_CSD_BUS_WIDTH_8, card->ext_csd.generic_cmd6_time, 126802098ccdSUlf Hansson 0, false, true); 12696376f69dSAdrian Hunter if (err) 12706376f69dSAdrian Hunter goto out_err; 12716376f69dSAdrian Hunter 12726376f69dSAdrian Hunter mmc_set_timing(host, MMC_TIMING_MMC_HS); 12736376f69dSAdrian Hunter 127460db8a47SUlf Hansson err = mmc_switch_status(card, true); 12756376f69dSAdrian Hunter if (err) 12766376f69dSAdrian Hunter goto out_err; 12776376f69dSAdrian Hunter 12786376f69dSAdrian Hunter /* Switch HS to HS200 */ 1279cc4f414cSAdrian Hunter val = EXT_CSD_TIMING_HS200 | 1280cc4f414cSAdrian Hunter card->drive_strength << EXT_CSD_DRV_STR_SHIFT; 12816376f69dSAdrian Hunter err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, 1282aa33ce3cSUlf Hansson val, card->ext_csd.generic_cmd6_time, 0, 128302098ccdSUlf Hansson false, true); 12846376f69dSAdrian Hunter if (err) 12856376f69dSAdrian Hunter goto out_err; 12866376f69dSAdrian Hunter 12876376f69dSAdrian Hunter mmc_set_timing(host, MMC_TIMING_MMC_HS200); 12886376f69dSAdrian Hunter 1289ef3d2322SAdrian Hunter /* 1290ef3d2322SAdrian Hunter * For HS200, CRC errors are not a reliable way to know the switch 1291ef3d2322SAdrian Hunter * failed. If there really is a problem, we would expect tuning will 1292ef3d2322SAdrian Hunter * fail and the result ends up the same. 1293ef3d2322SAdrian Hunter */ 129460db8a47SUlf Hansson err = mmc_switch_status(card, false); 12956376f69dSAdrian Hunter if (err) 12966376f69dSAdrian Hunter goto out_err; 12976376f69dSAdrian Hunter 12986376f69dSAdrian Hunter mmc_set_bus_speed(card); 12996376f69dSAdrian Hunter 1300c8a4e30dSUlf Hansson /* Prepare tuning for HS400 mode. */ 1301c8a4e30dSUlf Hansson if (host->ops->prepare_hs400_tuning) 1302c8a4e30dSUlf Hansson host->ops->prepare_hs400_tuning(host, &host->ios); 1303c8a4e30dSUlf Hansson 13046376f69dSAdrian Hunter return 0; 13056376f69dSAdrian Hunter 13066376f69dSAdrian Hunter out_err: 13076376f69dSAdrian Hunter pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), 13086376f69dSAdrian Hunter __func__, err); 13096376f69dSAdrian Hunter return err; 13106376f69dSAdrian Hunter } 13116376f69dSAdrian Hunter 1312fb458864SChanho Min static void mmc_select_driver_type(struct mmc_card *card) 1313fb458864SChanho Min { 1314be17f1ceSWolfram Sang int card_drv_type, drive_strength, drv_type = 0; 13156186d06cSWolfram Sang int fixed_drv_type = card->host->fixed_drv_type; 1316fb458864SChanho Min 1317fb458864SChanho Min card_drv_type = card->ext_csd.raw_driver_strength | 1318fb458864SChanho Min mmc_driver_type_mask(0); 1319fb458864SChanho Min 13206186d06cSWolfram Sang if (fixed_drv_type >= 0) 13216186d06cSWolfram Sang drive_strength = card_drv_type & mmc_driver_type_mask(fixed_drv_type) 13226186d06cSWolfram Sang ? fixed_drv_type : 0; 13236186d06cSWolfram Sang else 1324fb458864SChanho Min drive_strength = mmc_select_drive_strength(card, 1325fb458864SChanho Min card->ext_csd.hs200_max_dtr, 1326fb458864SChanho Min card_drv_type, &drv_type); 1327fb458864SChanho Min 1328fb458864SChanho Min card->drive_strength = drive_strength; 1329fb458864SChanho Min 1330fb458864SChanho Min if (drv_type) 1331fb458864SChanho Min mmc_set_driver_type(card->host, drv_type); 1332fb458864SChanho Min } 1333fb458864SChanho Min 133481ac2af6SShawn Lin static int mmc_select_hs400es(struct mmc_card *card) 133581ac2af6SShawn Lin { 133681ac2af6SShawn Lin struct mmc_host *host = card->host; 133792ddd959SHaibo Chen int err = -EINVAL; 133881ac2af6SShawn Lin u8 val; 133981ac2af6SShawn Lin 134081ac2af6SShawn Lin if (!(host->caps & MMC_CAP_8_BIT_DATA)) { 134181ac2af6SShawn Lin err = -ENOTSUPP; 134281ac2af6SShawn Lin goto out_err; 134381ac2af6SShawn Lin } 134481ac2af6SShawn Lin 13451720d354SShawn Lin if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400_1_2V) 13464e74b6b3SUlf Hansson err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); 13471720d354SShawn Lin 13481720d354SShawn Lin if (err && card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400_1_8V) 13494e74b6b3SUlf Hansson err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); 13501720d354SShawn Lin 13511720d354SShawn Lin /* If fails try again during next card power cycle */ 13521720d354SShawn Lin if (err) 13531720d354SShawn Lin goto out_err; 13541720d354SShawn Lin 135581ac2af6SShawn Lin err = mmc_select_bus_width(card); 13567f38abf2SHongjie Fang if (err != MMC_BUS_WIDTH_8) { 13577f38abf2SHongjie Fang pr_err("%s: switch to 8bit bus width failed, err:%d\n", 13587f38abf2SHongjie Fang mmc_hostname(host), err); 13597f38abf2SHongjie Fang err = err < 0 ? err : -ENOTSUPP; 136081ac2af6SShawn Lin goto out_err; 13617f38abf2SHongjie Fang } 136281ac2af6SShawn Lin 136381ac2af6SShawn Lin /* Switch card to HS mode */ 136453e60650SUlf Hansson err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 136553e60650SUlf Hansson EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS, 136653e60650SUlf Hansson card->ext_csd.generic_cmd6_time, 0, 136702098ccdSUlf Hansson false, true); 136853e60650SUlf Hansson if (err) { 136953e60650SUlf Hansson pr_err("%s: switch to hs for hs400es failed, err:%d\n", 137053e60650SUlf Hansson mmc_hostname(host), err); 137153e60650SUlf Hansson goto out_err; 137253e60650SUlf Hansson } 137353e60650SUlf Hansson 137453e60650SUlf Hansson mmc_set_timing(host, MMC_TIMING_MMC_HS); 137560db8a47SUlf Hansson err = mmc_switch_status(card, true); 137667d35960SJungseung Lee if (err) 137781ac2af6SShawn Lin goto out_err; 137881ac2af6SShawn Lin 13794f25580fSShawn Lin mmc_set_clock(host, card->ext_csd.hs_max_dtr); 13804f25580fSShawn Lin 138181ac2af6SShawn Lin /* Switch card to DDR with strobe bit */ 138281ac2af6SShawn Lin val = EXT_CSD_DDR_BUS_WIDTH_8 | EXT_CSD_BUS_WIDTH_STROBE; 138381ac2af6SShawn Lin err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 138481ac2af6SShawn Lin EXT_CSD_BUS_WIDTH, 138581ac2af6SShawn Lin val, 138681ac2af6SShawn Lin card->ext_csd.generic_cmd6_time); 138781ac2af6SShawn Lin if (err) { 138881ac2af6SShawn Lin pr_err("%s: switch to bus width for hs400es failed, err:%d\n", 138981ac2af6SShawn Lin mmc_hostname(host), err); 139081ac2af6SShawn Lin goto out_err; 139181ac2af6SShawn Lin } 139281ac2af6SShawn Lin 1393fb458864SChanho Min mmc_select_driver_type(card); 1394fb458864SChanho Min 139581ac2af6SShawn Lin /* Switch card to HS400 */ 139681ac2af6SShawn Lin val = EXT_CSD_TIMING_HS400 | 139781ac2af6SShawn Lin card->drive_strength << EXT_CSD_DRV_STR_SHIFT; 139881ac2af6SShawn Lin err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 139981ac2af6SShawn Lin EXT_CSD_HS_TIMING, val, 1400aa33ce3cSUlf Hansson card->ext_csd.generic_cmd6_time, 0, 140102098ccdSUlf Hansson false, true); 140281ac2af6SShawn Lin if (err) { 140381ac2af6SShawn Lin pr_err("%s: switch to hs400es failed, err:%d\n", 140481ac2af6SShawn Lin mmc_hostname(host), err); 140581ac2af6SShawn Lin goto out_err; 140681ac2af6SShawn Lin } 140781ac2af6SShawn Lin 140881ac2af6SShawn Lin /* Set host controller to HS400 timing and frequency */ 140981ac2af6SShawn Lin mmc_set_timing(host, MMC_TIMING_MMC_HS400); 141081ac2af6SShawn Lin 141181ac2af6SShawn Lin /* Controller enable enhanced strobe function */ 141281ac2af6SShawn Lin host->ios.enhanced_strobe = true; 141381ac2af6SShawn Lin if (host->ops->hs400_enhanced_strobe) 141481ac2af6SShawn Lin host->ops->hs400_enhanced_strobe(host, &host->ios); 141581ac2af6SShawn Lin 141660db8a47SUlf Hansson err = mmc_switch_status(card, true); 141781ac2af6SShawn Lin if (err) 141881ac2af6SShawn Lin goto out_err; 141981ac2af6SShawn Lin 142081ac2af6SShawn Lin return 0; 142181ac2af6SShawn Lin 142281ac2af6SShawn Lin out_err: 142381ac2af6SShawn Lin pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), 142481ac2af6SShawn Lin __func__, err); 142581ac2af6SShawn Lin return err; 142681ac2af6SShawn Lin } 142781ac2af6SShawn Lin 1428577fb131SSeungwon Jeon /* 1429577fb131SSeungwon Jeon * For device supporting HS200 mode, the following sequence 1430577fb131SSeungwon Jeon * should be done before executing the tuning process. 1431577fb131SSeungwon Jeon * 1. set the desired bus width(4-bit or 8-bit, 1-bit is not supported) 1432577fb131SSeungwon Jeon * 2. switch to HS200 mode 1433577fb131SSeungwon Jeon * 3. set the clock to > 52Mhz and <=200MHz 1434577fb131SSeungwon Jeon */ 1435577fb131SSeungwon Jeon static int mmc_select_hs200(struct mmc_card *card) 1436577fb131SSeungwon Jeon { 1437577fb131SSeungwon Jeon struct mmc_host *host = card->host; 1438e51534c8SDong Aisheng unsigned int old_timing, old_signal_voltage; 1439577fb131SSeungwon Jeon int err = -EINVAL; 1440cc4f414cSAdrian Hunter u8 val; 1441577fb131SSeungwon Jeon 1442e51534c8SDong Aisheng old_signal_voltage = host->ios.signal_voltage; 1443577fb131SSeungwon Jeon if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_2V) 14444e74b6b3SUlf Hansson err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); 1445577fb131SSeungwon Jeon 1446577fb131SSeungwon Jeon if (err && card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_8V) 14474e74b6b3SUlf Hansson err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); 1448577fb131SSeungwon Jeon 1449577fb131SSeungwon Jeon /* If fails try again during next card power cycle */ 1450577fb131SSeungwon Jeon if (err) 1451e51534c8SDong Aisheng return err; 1452577fb131SSeungwon Jeon 1453cc4f414cSAdrian Hunter mmc_select_driver_type(card); 1454cc4f414cSAdrian Hunter 1455577fb131SSeungwon Jeon /* 1456577fb131SSeungwon Jeon * Set the bus width(4 or 8) with host's support and 1457577fb131SSeungwon Jeon * switch to HS200 mode if bus width is set successfully. 1458577fb131SSeungwon Jeon */ 1459577fb131SSeungwon Jeon err = mmc_select_bus_width(card); 14608b7be8f2SPeter Griffin if (err > 0) { 1461cc4f414cSAdrian Hunter val = EXT_CSD_TIMING_HS200 | 1462cc4f414cSAdrian Hunter card->drive_strength << EXT_CSD_DRV_STR_SHIFT; 1463577fb131SSeungwon Jeon err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1464cc4f414cSAdrian Hunter EXT_CSD_HS_TIMING, val, 1465aa33ce3cSUlf Hansson card->ext_csd.generic_cmd6_time, 0, 146602098ccdSUlf Hansson false, true); 14671815e61bSAdrian Hunter if (err) 14681815e61bSAdrian Hunter goto err; 14691815e61bSAdrian Hunter old_timing = host->ios.timing; 1470577fb131SSeungwon Jeon mmc_set_timing(host, MMC_TIMING_MMC_HS200); 147108573eafSChaotian Jing 1472ef3d2322SAdrian Hunter /* 1473ef3d2322SAdrian Hunter * For HS200, CRC errors are not a reliable way to know the 1474ef3d2322SAdrian Hunter * switch failed. If there really is a problem, we would expect 1475ef3d2322SAdrian Hunter * tuning will fail and the result ends up the same. 1476ef3d2322SAdrian Hunter */ 147760db8a47SUlf Hansson err = mmc_switch_status(card, false); 1478ef3d2322SAdrian Hunter 14791815e61bSAdrian Hunter /* 14801815e61bSAdrian Hunter * mmc_select_timing() assumes timing has not changed if 14811815e61bSAdrian Hunter * it is a switch error. 14821815e61bSAdrian Hunter */ 14831815e61bSAdrian Hunter if (err == -EBADMSG) 14841815e61bSAdrian Hunter mmc_set_timing(host, old_timing); 14851815e61bSAdrian Hunter } 1486a4924c71SGirish K S err: 1487e51534c8SDong Aisheng if (err) { 1488e51534c8SDong Aisheng /* fall back to the old signal voltage, if fails report error */ 14894e74b6b3SUlf Hansson if (mmc_set_signal_voltage(host, old_signal_voltage)) 1490e51534c8SDong Aisheng err = -EIO; 1491e51534c8SDong Aisheng 14921815e61bSAdrian Hunter pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), 14931815e61bSAdrian Hunter __func__, err); 1494e51534c8SDong Aisheng } 1495a4924c71SGirish K S return err; 1496a4924c71SGirish K S } 1497a4924c71SGirish K S 1498a4924c71SGirish K S /* 149981ac2af6SShawn Lin * Activate High Speed, HS200 or HS400ES mode if supported. 1500577fb131SSeungwon Jeon */ 1501577fb131SSeungwon Jeon static int mmc_select_timing(struct mmc_card *card) 1502577fb131SSeungwon Jeon { 1503577fb131SSeungwon Jeon int err = 0; 1504577fb131SSeungwon Jeon 1505148bcab2SUlf Hansson if (!mmc_can_ext_csd(card)) 1506577fb131SSeungwon Jeon goto bus_speed; 1507577fb131SSeungwon Jeon 150881ac2af6SShawn Lin if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400ES) 150981ac2af6SShawn Lin err = mmc_select_hs400es(card); 151081ac2af6SShawn Lin else if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200) 1511577fb131SSeungwon Jeon err = mmc_select_hs200(card); 1512577fb131SSeungwon Jeon else if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS) 1513577fb131SSeungwon Jeon err = mmc_select_hs(card); 1514577fb131SSeungwon Jeon 1515577fb131SSeungwon Jeon if (err && err != -EBADMSG) 1516577fb131SSeungwon Jeon return err; 1517577fb131SSeungwon Jeon 1518577fb131SSeungwon Jeon bus_speed: 1519577fb131SSeungwon Jeon /* 1520577fb131SSeungwon Jeon * Set the bus speed to the selected bus timing. 1521577fb131SSeungwon Jeon * If timing is not selected, backward compatible is the default. 1522577fb131SSeungwon Jeon */ 1523577fb131SSeungwon Jeon mmc_set_bus_speed(card); 15240400ed0aSDong Aisheng return 0; 1525577fb131SSeungwon Jeon } 1526577fb131SSeungwon Jeon 1527577fb131SSeungwon Jeon /* 1528577fb131SSeungwon Jeon * Execute tuning sequence to seek the proper bus operating 15290a5b6438SSeungwon Jeon * conditions for HS200 and HS400, which sends CMD21 to the device. 1530577fb131SSeungwon Jeon */ 1531577fb131SSeungwon Jeon static int mmc_hs200_tuning(struct mmc_card *card) 1532577fb131SSeungwon Jeon { 1533577fb131SSeungwon Jeon struct mmc_host *host = card->host; 1534577fb131SSeungwon Jeon 15350a5b6438SSeungwon Jeon /* 15360a5b6438SSeungwon Jeon * Timing should be adjusted to the HS400 target 15370a5b6438SSeungwon Jeon * operation frequency for tuning process 15380a5b6438SSeungwon Jeon */ 15390a5b6438SSeungwon Jeon if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 && 15400a5b6438SSeungwon Jeon host->ios.bus_width == MMC_BUS_WIDTH_8) 15410a5b6438SSeungwon Jeon if (host->ops->prepare_hs400_tuning) 15420a5b6438SSeungwon Jeon host->ops->prepare_hs400_tuning(host, &host->ios); 15430a5b6438SSeungwon Jeon 154463e415c6SAdrian Hunter return mmc_execute_tuning(card); 1545577fb131SSeungwon Jeon } 1546577fb131SSeungwon Jeon 1547577fb131SSeungwon Jeon /* 15486abaa0c9SPierre Ossman * Handle the detection and initialisation of a card. 15496abaa0c9SPierre Ossman * 15508769392bSDeepak Saxena * In the case of a resume, "oldcard" will contain the card 15516abaa0c9SPierre Ossman * we're trying to reinitialise. 15527ea239d9SPierre Ossman */ 15538c75deaeSPierre Ossman static int mmc_init_card(struct mmc_host *host, u32 ocr, 15546abaa0c9SPierre Ossman struct mmc_card *oldcard) 15557ea239d9SPierre Ossman { 15567ea239d9SPierre Ossman struct mmc_card *card; 1557577fb131SSeungwon Jeon int err; 15587ea239d9SPierre Ossman u32 cid[4]; 1559b676f039SPhilip Rakity u32 rocr; 15607ea239d9SPierre Ossman 1561d84075c8SPierre Ossman WARN_ON(!host->claimed); 15627ea239d9SPierre Ossman 156344669034SStefan Nilsson XK /* Set correct bus mode for MMC before attempting init */ 156444669034SStefan Nilsson XK if (!mmc_host_is_spi(host)) 156544669034SStefan Nilsson XK mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); 156644669034SStefan Nilsson XK 15677ea239d9SPierre Ossman /* 15687ea239d9SPierre Ossman * Since we're changing the OCR value, we seem to 15697ea239d9SPierre Ossman * need to tell some cards to go back to the idle 15707ea239d9SPierre Ossman * state. We wait 1ms to give cards time to 15717ea239d9SPierre Ossman * respond. 1572c3805467SBalaji T K * mmc_go_idle is needed for eMMC that are asleep 15737ea239d9SPierre Ossman */ 15747ea239d9SPierre Ossman mmc_go_idle(host); 15757ea239d9SPierre Ossman 15767ea239d9SPierre Ossman /* The extra bit indicates that we support high capacity */ 1577b676f039SPhilip Rakity err = mmc_send_op_cond(host, ocr | (1 << 30), &rocr); 157817b0429dSPierre Ossman if (err) 15796abaa0c9SPierre Ossman goto err; 15807ea239d9SPierre Ossman 15817ea239d9SPierre Ossman /* 1582af517150SDavid Brownell * For SPI, enable CRC as appropriate. 1583af517150SDavid Brownell */ 1584af517150SDavid Brownell if (mmc_host_is_spi(host)) { 1585af517150SDavid Brownell err = mmc_spi_set_crc(host, use_spi_crc); 1586af517150SDavid Brownell if (err) 1587af517150SDavid Brownell goto err; 1588af517150SDavid Brownell } 1589af517150SDavid Brownell 1590af517150SDavid Brownell /* 15917ea239d9SPierre Ossman * Fetch CID from card. 15927ea239d9SPierre Ossman */ 1593af517150SDavid Brownell err = mmc_send_cid(host, cid); 159417b0429dSPierre Ossman if (err) 15957ea239d9SPierre Ossman goto err; 15967ea239d9SPierre Ossman 15976abaa0c9SPierre Ossman if (oldcard) { 1598adf66a0dSPierre Ossman if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) { 1599099b6481Shongjiefang pr_debug("%s: Perhaps the card was replaced\n", 1600099b6481Shongjiefang mmc_hostname(host)); 1601adf66a0dSPierre Ossman err = -ENOENT; 16026abaa0c9SPierre Ossman goto err; 1603adf66a0dSPierre Ossman } 16046abaa0c9SPierre Ossman 16056abaa0c9SPierre Ossman card = oldcard; 16066abaa0c9SPierre Ossman } else { 16077ea239d9SPierre Ossman /* 16087ea239d9SPierre Ossman * Allocate card structure. 16097ea239d9SPierre Ossman */ 161051ec92e2SPierre Ossman card = mmc_alloc_card(host, &mmc_type); 1611adf66a0dSPierre Ossman if (IS_ERR(card)) { 1612adf66a0dSPierre Ossman err = PTR_ERR(card); 16137ea239d9SPierre Ossman goto err; 1614adf66a0dSPierre Ossman } 16157ea239d9SPierre Ossman 161669041150SUlf Hansson card->ocr = ocr; 16177ea239d9SPierre Ossman card->type = MMC_TYPE_MMC; 16187ea239d9SPierre Ossman card->rca = 1; 16197ea239d9SPierre Ossman memcpy(card->raw_cid, cid, sizeof(card->raw_cid)); 16206abaa0c9SPierre Ossman } 16217ea239d9SPierre Ossman 16227ea239d9SPierre Ossman /* 1623eac86321SDoug Anderson * Call the optional HC's init_card function to handle quirks. 1624eac86321SDoug Anderson */ 1625eac86321SDoug Anderson if (host->ops->init_card) 1626eac86321SDoug Anderson host->ops->init_card(host, card); 1627eac86321SDoug Anderson 1628eac86321SDoug Anderson /* 1629af517150SDavid Brownell * For native busses: set card RCA and quit open drain mode. 16307ea239d9SPierre Ossman */ 1631af517150SDavid Brownell if (!mmc_host_is_spi(host)) { 16327ea239d9SPierre Ossman err = mmc_set_relative_addr(card); 163317b0429dSPierre Ossman if (err) 16347ea239d9SPierre Ossman goto free_card; 16357ea239d9SPierre Ossman 16367ea239d9SPierre Ossman mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL); 1637af517150SDavid Brownell } 16387ea239d9SPierre Ossman 16396abaa0c9SPierre Ossman if (!oldcard) { 16407ea239d9SPierre Ossman /* 16417ea239d9SPierre Ossman * Fetch CSD from card. 16427ea239d9SPierre Ossman */ 16437ea239d9SPierre Ossman err = mmc_send_csd(card, card->raw_csd); 164417b0429dSPierre Ossman if (err) 16457ea239d9SPierre Ossman goto free_card; 16467ea239d9SPierre Ossman 1647bd766312SPierre Ossman err = mmc_decode_csd(card); 1648adf66a0dSPierre Ossman if (err) 1649bd766312SPierre Ossman goto free_card; 1650bd766312SPierre Ossman err = mmc_decode_cid(card); 1651adf66a0dSPierre Ossman if (err) 1652bd766312SPierre Ossman goto free_card; 16536abaa0c9SPierre Ossman } 16547ea239d9SPierre Ossman 16557ea239d9SPierre Ossman /* 16563d705d14SSascha Hauer * handling only for cards supporting DSR and hosts requesting 16573d705d14SSascha Hauer * DSR configuration 16583d705d14SSascha Hauer */ 16593d705d14SSascha Hauer if (card->csd.dsr_imp && host->dsr_req) 16603d705d14SSascha Hauer mmc_set_dsr(host); 16613d705d14SSascha Hauer 16623d705d14SSascha Hauer /* 166389a73cf5SPierre Ossman * Select card, as all following commands rely on that. 16647ea239d9SPierre Ossman */ 1665af517150SDavid Brownell if (!mmc_host_is_spi(host)) { 16667ea239d9SPierre Ossman err = mmc_select_card(card); 166717b0429dSPierre Ossman if (err) 16687ea239d9SPierre Ossman goto free_card; 1669af517150SDavid Brownell } 16707ea239d9SPierre Ossman 16716abaa0c9SPierre Ossman if (!oldcard) { 1672076ec38aSUlf Hansson /* Read extended CSD. */ 1673076ec38aSUlf Hansson err = mmc_read_ext_csd(card); 167417b0429dSPierre Ossman if (err) 16757ea239d9SPierre Ossman goto free_card; 1676b676f039SPhilip Rakity 167787e88659SMasahiro Yamada /* 167887e88659SMasahiro Yamada * If doing byte addressing, check if required to do sector 1679b676f039SPhilip Rakity * addressing. Handle the case of <2GB cards needing sector 1680b676f039SPhilip Rakity * addressing. See section 8.1 JEDEC Standard JED84-A441; 1681b676f039SPhilip Rakity * ocr register has bit 30 set for sector addressing. 1682b676f039SPhilip Rakity */ 168387e88659SMasahiro Yamada if (rocr & BIT(30)) 1684b676f039SPhilip Rakity mmc_card_set_blockaddr(card); 1685b676f039SPhilip Rakity 1686dfe86cbaSAdrian Hunter /* Erase size depends on CSD and Extended CSD */ 1687dfe86cbaSAdrian Hunter mmc_set_erase_size(card); 16886abaa0c9SPierre Ossman } 16897ea239d9SPierre Ossman 1690d2a47176SUlf Hansson /* Enable ERASE_GRP_DEF. This bit is lost after a reset or power off. */ 1691d2a47176SUlf Hansson if (card->ext_csd.rev >= 3) { 1692709de99dSChuanxiao Dong err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1693b23cf0bdSSeungwon Jeon EXT_CSD_ERASE_GROUP_DEF, 1, 1694b23cf0bdSSeungwon Jeon card->ext_csd.generic_cmd6_time); 1695709de99dSChuanxiao Dong 1696709de99dSChuanxiao Dong if (err && err != -EBADMSG) 1697709de99dSChuanxiao Dong goto free_card; 1698709de99dSChuanxiao Dong 1699709de99dSChuanxiao Dong if (err) { 1700709de99dSChuanxiao Dong err = 0; 1701709de99dSChuanxiao Dong /* 1702709de99dSChuanxiao Dong * Just disable enhanced area off & sz 1703709de99dSChuanxiao Dong * will try to enable ERASE_GROUP_DEF 1704709de99dSChuanxiao Dong * during next time reinit 1705709de99dSChuanxiao Dong */ 1706709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset = -EINVAL; 1707709de99dSChuanxiao Dong card->ext_csd.enhanced_area_size = -EINVAL; 1708709de99dSChuanxiao Dong } else { 1709709de99dSChuanxiao Dong card->ext_csd.erase_group_def = 1; 1710709de99dSChuanxiao Dong /* 1711709de99dSChuanxiao Dong * enable ERASE_GRP_DEF successfully. 1712709de99dSChuanxiao Dong * This will affect the erase size, so 1713709de99dSChuanxiao Dong * here need to reset erase size 1714709de99dSChuanxiao Dong */ 1715709de99dSChuanxiao Dong mmc_set_erase_size(card); 1716709de99dSChuanxiao Dong } 1717709de99dSChuanxiao Dong } 1718709de99dSChuanxiao Dong 1719709de99dSChuanxiao Dong /* 172041e2a489SPhilip Rakity * Ensure eMMC user default partition is enabled 172141e2a489SPhilip Rakity */ 1722371a689fSAndrei Warkentin if (card->ext_csd.part_config & EXT_CSD_PART_CONFIG_ACC_MASK) { 1723371a689fSAndrei Warkentin card->ext_csd.part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK; 1724371a689fSAndrei Warkentin err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONFIG, 1725371a689fSAndrei Warkentin card->ext_csd.part_config, 1726371a689fSAndrei Warkentin card->ext_csd.part_time); 1727371a689fSAndrei Warkentin if (err && err != -EBADMSG) 1728371a689fSAndrei Warkentin goto free_card; 172941e2a489SPhilip Rakity } 173041e2a489SPhilip Rakity 173141e2a489SPhilip Rakity /* 173243235679SUlf Hansson * Enable power_off_notification byte in the ext_csd register 1733bec8726aSGirish K S */ 173443235679SUlf Hansson if (card->ext_csd.rev >= 6) { 1735bec8726aSGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1736bec8726aSGirish K S EXT_CSD_POWER_OFF_NOTIFICATION, 1737bec8726aSGirish K S EXT_CSD_POWER_ON, 1738bec8726aSGirish K S card->ext_csd.generic_cmd6_time); 1739bec8726aSGirish K S if (err && err != -EBADMSG) 1740bec8726aSGirish K S goto free_card; 1741bec8726aSGirish K S 174296a85d54SGirish K S /* 174396a85d54SGirish K S * The err can be -EBADMSG or 0, 174496a85d54SGirish K S * so check for success and update the flag 174596a85d54SGirish K S */ 1746bec8726aSGirish K S if (!err) 1747e6c08586SUlf Hansson card->ext_csd.power_off_notification = EXT_CSD_POWER_ON; 174896a85d54SGirish K S } 1749bec8726aSGirish K S 175001904ff7SAvri Altman /* set erase_arg */ 175101904ff7SAvri Altman if (mmc_can_discard(card)) 175201904ff7SAvri Altman card->erase_arg = MMC_DISCARD_ARG; 175301904ff7SAvri Altman else if (mmc_can_trim(card)) 175401904ff7SAvri Altman card->erase_arg = MMC_TRIM_ARG; 175501904ff7SAvri Altman else 175601904ff7SAvri Altman card->erase_arg = MMC_ERASE_ARG; 175701904ff7SAvri Altman 1758bec8726aSGirish K S /* 1759577fb131SSeungwon Jeon * Select timing interface 176089a73cf5SPierre Ossman */ 1761577fb131SSeungwon Jeon err = mmc_select_timing(card); 1762577fb131SSeungwon Jeon if (err) 176389a73cf5SPierre Ossman goto free_card; 176489a73cf5SPierre Ossman 1765a4924c71SGirish K S if (mmc_card_hs200(card)) { 176697a7d87eSWolfram Sang host->doing_init_tune = 1; 176797a7d87eSWolfram Sang 1768577fb131SSeungwon Jeon err = mmc_hs200_tuning(card); 17694c4cb171SPhilip Rakity if (err) 17704b75bffcSAndrew Gabbasov goto free_card; 17710a5b6438SSeungwon Jeon 17720a5b6438SSeungwon Jeon err = mmc_select_hs400(card); 17730a5b6438SSeungwon Jeon if (err) 17744b75bffcSAndrew Gabbasov goto free_card; 177597a7d87eSWolfram Sang 177697a7d87eSWolfram Sang host->doing_init_tune = 0; 1777773dc118SGuenter Roeck } else if (!mmc_card_hs400es(card)) { 1778577fb131SSeungwon Jeon /* Select the desired bus width optionally */ 1779577fb131SSeungwon Jeon err = mmc_select_bus_width(card); 17803d4ef329SAnssi Hannula if (err > 0 && mmc_card_hs(card)) { 1781577fb131SSeungwon Jeon err = mmc_select_hs_ddr(card); 1782577fb131SSeungwon Jeon if (err) 17834b75bffcSAndrew Gabbasov goto free_card; 178489a73cf5SPierre Ossman } 1785ef0b27d4SAdrian Hunter } 178689a73cf5SPierre Ossman 1787881d1c25SSeungwon Jeon /* 17882385049dSSeungwon Jeon * Choose the power class with selected bus interface 17892385049dSSeungwon Jeon */ 17902385049dSSeungwon Jeon mmc_select_powerclass(card); 17912385049dSSeungwon Jeon 17922385049dSSeungwon Jeon /* 179352d0974eSSubhash Jadavani * Enable HPI feature (if supported) 179452d0974eSSubhash Jadavani */ 179552d0974eSSubhash Jadavani if (card->ext_csd.hpi) { 179652d0974eSSubhash Jadavani err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 179752d0974eSSubhash Jadavani EXT_CSD_HPI_MGMT, 1, 179852d0974eSSubhash Jadavani card->ext_csd.generic_cmd6_time); 179952d0974eSSubhash Jadavani if (err && err != -EBADMSG) 180052d0974eSSubhash Jadavani goto free_card; 180152d0974eSSubhash Jadavani if (err) { 18026606110dSJoe Perches pr_warn("%s: Enabling HPI failed\n", 180352d0974eSSubhash Jadavani mmc_hostname(card->host)); 1804a0741ba4SUlf Hansson card->ext_csd.hpi_en = 0; 180552d0974eSSubhash Jadavani err = 0; 1806a0741ba4SUlf Hansson } else { 180752d0974eSSubhash Jadavani card->ext_csd.hpi_en = 1; 180852d0974eSSubhash Jadavani } 1809a0741ba4SUlf Hansson } 181052d0974eSSubhash Jadavani 181152d0974eSSubhash Jadavani /* 1812e3ae3401SUlf Hansson * If cache size is higher than 0, this indicates the existence of cache 1813e3ae3401SUlf Hansson * and it can be turned on. Note that some eMMCs from Micron has been 1814e3ae3401SUlf Hansson * reported to need ~800 ms timeout, while enabling the cache after 1815e3ae3401SUlf Hansson * sudden power failure tests. Let's extend the timeout to a minimum of 1816e3ae3401SUlf Hansson * DEFAULT_CACHE_EN_TIMEOUT_MS and do it for all cards. 1817881d1c25SSeungwon Jeon */ 1818ba9f39a7SUlf Hansson if (card->ext_csd.cache_size > 0) { 1819e3ae3401SUlf Hansson unsigned int timeout_ms = MIN_CACHE_EN_TIMEOUT_MS; 1820e3ae3401SUlf Hansson 1821e3ae3401SUlf Hansson timeout_ms = max(card->ext_csd.generic_cmd6_time, timeout_ms); 1822881d1c25SSeungwon Jeon err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1823e3ae3401SUlf Hansson EXT_CSD_CACHE_CTRL, 1, timeout_ms); 1824881d1c25SSeungwon Jeon if (err && err != -EBADMSG) 1825881d1c25SSeungwon Jeon goto free_card; 1826881d1c25SSeungwon Jeon 1827881d1c25SSeungwon Jeon /* 1828881d1c25SSeungwon Jeon * Only if no error, cache is turned on successfully. 1829881d1c25SSeungwon Jeon */ 18308bc0678bSSeungwon Jeon if (err) { 18316606110dSJoe Perches pr_warn("%s: Cache is supported, but failed to turn on (%d)\n", 18328bc0678bSSeungwon Jeon mmc_hostname(card->host), err); 18338bc0678bSSeungwon Jeon card->ext_csd.cache_ctrl = 0; 18348bc0678bSSeungwon Jeon err = 0; 18358bc0678bSSeungwon Jeon } else { 18368bc0678bSSeungwon Jeon card->ext_csd.cache_ctrl = 1; 18378bc0678bSSeungwon Jeon } 1838881d1c25SSeungwon Jeon } 1839881d1c25SSeungwon Jeon 1840abd9ac14SSeungwon Jeon /* 184198d4f780SAdrian Hunter * Enable Command Queue if supported. Note that Packed Commands cannot 184298d4f780SAdrian Hunter * be used with Command Queue. 184398d4f780SAdrian Hunter */ 184498d4f780SAdrian Hunter card->ext_csd.cmdq_en = false; 184598d4f780SAdrian Hunter if (card->ext_csd.cmdq_support && host->caps2 & MMC_CAP2_CQE) { 184698d4f780SAdrian Hunter err = mmc_cmdq_enable(card); 184798d4f780SAdrian Hunter if (err && err != -EBADMSG) 184898d4f780SAdrian Hunter goto free_card; 184998d4f780SAdrian Hunter if (err) { 185098d4f780SAdrian Hunter pr_warn("%s: Enabling CMDQ failed\n", 185198d4f780SAdrian Hunter mmc_hostname(card->host)); 185298d4f780SAdrian Hunter card->ext_csd.cmdq_support = false; 185398d4f780SAdrian Hunter card->ext_csd.cmdq_depth = 0; 185498d4f780SAdrian Hunter err = 0; 185598d4f780SAdrian Hunter } 185698d4f780SAdrian Hunter } 185798d4f780SAdrian Hunter /* 18589d4579a8SAdrian Hunter * In some cases (e.g. RPMB or mmc_test), the Command Queue must be 18599d4579a8SAdrian Hunter * disabled for a time, so a flag is needed to indicate to re-enable the 18609d4579a8SAdrian Hunter * Command Queue. 18619d4579a8SAdrian Hunter */ 18629d4579a8SAdrian Hunter card->reenable_cmdq = card->ext_csd.cmdq_en; 18639d4579a8SAdrian Hunter 1864511ce378SBaolin Wang if (host->cqe_ops && !host->cqe_enabled) { 1865f690f440SAdrian Hunter err = host->cqe_ops->cqe_enable(host, card); 1866511ce378SBaolin Wang if (!err) { 1867f690f440SAdrian Hunter host->cqe_enabled = true; 1868511ce378SBaolin Wang 1869511ce378SBaolin Wang if (card->ext_csd.cmdq_en) { 1870f690f440SAdrian Hunter pr_info("%s: Command Queue Engine enabled\n", 1871f690f440SAdrian Hunter mmc_hostname(host)); 1872511ce378SBaolin Wang } else { 1873511ce378SBaolin Wang host->hsq_enabled = true; 1874511ce378SBaolin Wang pr_info("%s: Host Software Queue enabled\n", 1875511ce378SBaolin Wang mmc_hostname(host)); 1876511ce378SBaolin Wang } 1877f690f440SAdrian Hunter } 1878f690f440SAdrian Hunter } 1879f690f440SAdrian Hunter 1880247cfe53SKyle Roeschley if (host->caps2 & MMC_CAP2_AVOID_3_3V && 1881247cfe53SKyle Roeschley host->ios.signal_voltage == MMC_SIGNAL_VOLTAGE_330) { 1882247cfe53SKyle Roeschley pr_err("%s: Host failed to negotiate down from 3.3V\n", 1883247cfe53SKyle Roeschley mmc_hostname(host)); 1884247cfe53SKyle Roeschley err = -EINVAL; 1885247cfe53SKyle Roeschley goto free_card; 1886247cfe53SKyle Roeschley } 1887247cfe53SKyle Roeschley 18886abaa0c9SPierre Ossman if (!oldcard) 18897ea239d9SPierre Ossman host->card = card; 18907ea239d9SPierre Ossman 189117b0429dSPierre Ossman return 0; 18926abaa0c9SPierre Ossman 18936abaa0c9SPierre Ossman free_card: 18946abaa0c9SPierre Ossman if (!oldcard) 18956abaa0c9SPierre Ossman mmc_remove_card(card); 18966abaa0c9SPierre Ossman err: 1897adf66a0dSPierre Ossman return err; 18986abaa0c9SPierre Ossman } 18996abaa0c9SPierre Ossman 190007a68216SUlf Hansson static int mmc_can_sleep(struct mmc_card *card) 190107a68216SUlf Hansson { 190207a68216SUlf Hansson return (card && card->ext_csd.rev >= 3); 190307a68216SUlf Hansson } 190407a68216SUlf Hansson 190507a68216SUlf Hansson static int mmc_sleep(struct mmc_host *host) 190607a68216SUlf Hansson { 1907c7836d15SMasahiro Yamada struct mmc_command cmd = {}; 190807a68216SUlf Hansson struct mmc_card *card = host->card; 1909cb962e04SUlf Hansson unsigned int timeout_ms = DIV_ROUND_UP(card->ext_csd.sa_timeout, 10000); 191007a68216SUlf Hansson int err; 191107a68216SUlf Hansson 1912436f8daaSAdrian Hunter /* Re-tuning can't be done once the card is deselected */ 1913436f8daaSAdrian Hunter mmc_retune_hold(host); 1914436f8daaSAdrian Hunter 191507a68216SUlf Hansson err = mmc_deselect_cards(host); 191607a68216SUlf Hansson if (err) 1917436f8daaSAdrian Hunter goto out_release; 191807a68216SUlf Hansson 191907a68216SUlf Hansson cmd.opcode = MMC_SLEEP_AWAKE; 192007a68216SUlf Hansson cmd.arg = card->rca << 16; 192107a68216SUlf Hansson cmd.arg |= 1 << 15; 192207a68216SUlf Hansson 1923cb962e04SUlf Hansson /* 1924cb962e04SUlf Hansson * If the max_busy_timeout of the host is specified, validate it against 1925cb962e04SUlf Hansson * the sleep cmd timeout. A failure means we need to prevent the host 1926cb962e04SUlf Hansson * from doing hw busy detection, which is done by converting to a R1 192718d20046SUlf Hansson * response instead of a R1B. Note, some hosts requires R1B, which also 192818d20046SUlf Hansson * means they are on their own when it comes to deal with the busy 192918d20046SUlf Hansson * timeout. 1930cb962e04SUlf Hansson */ 193118d20046SUlf Hansson if (!(host->caps & MMC_CAP_NEED_RSP_BUSY) && host->max_busy_timeout && 193218d20046SUlf Hansson (timeout_ms > host->max_busy_timeout)) { 1933cb962e04SUlf Hansson cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; 1934cb962e04SUlf Hansson } else { 193507a68216SUlf Hansson cmd.flags = MMC_RSP_R1B | MMC_CMD_AC; 1936cb962e04SUlf Hansson cmd.busy_timeout = timeout_ms; 1937cb962e04SUlf Hansson } 1938cb962e04SUlf Hansson 193907a68216SUlf Hansson err = mmc_wait_for_cmd(host, &cmd, 0); 194007a68216SUlf Hansson if (err) 1941436f8daaSAdrian Hunter goto out_release; 194207a68216SUlf Hansson 194307a68216SUlf Hansson /* 194407a68216SUlf Hansson * If the host does not wait while the card signals busy, then we will 194507a68216SUlf Hansson * will have to wait the sleep/awake timeout. Note, we cannot use the 194607a68216SUlf Hansson * SEND_STATUS command to poll the status because that command (and most 194707a68216SUlf Hansson * others) is invalid while the card sleeps. 194807a68216SUlf Hansson */ 1949cb962e04SUlf Hansson if (!cmd.busy_timeout || !(host->caps & MMC_CAP_WAIT_WHILE_BUSY)) 1950cb962e04SUlf Hansson mmc_delay(timeout_ms); 195107a68216SUlf Hansson 1952436f8daaSAdrian Hunter out_release: 1953436f8daaSAdrian Hunter mmc_retune_release(host); 195407a68216SUlf Hansson return err; 195507a68216SUlf Hansson } 195607a68216SUlf Hansson 1957e6c08586SUlf Hansson static int mmc_can_poweroff_notify(const struct mmc_card *card) 1958e6c08586SUlf Hansson { 1959e6c08586SUlf Hansson return card && 1960e6c08586SUlf Hansson mmc_card_mmc(card) && 1961e6c08586SUlf Hansson (card->ext_csd.power_off_notification == EXT_CSD_POWER_ON); 1962e6c08586SUlf Hansson } 1963e6c08586SUlf Hansson 1964e6c08586SUlf Hansson static int mmc_poweroff_notify(struct mmc_card *card, unsigned int notify_type) 1965e6c08586SUlf Hansson { 1966e6c08586SUlf Hansson unsigned int timeout = card->ext_csd.generic_cmd6_time; 1967e6c08586SUlf Hansson int err; 1968e6c08586SUlf Hansson 1969e6c08586SUlf Hansson /* Use EXT_CSD_POWER_OFF_SHORT as default notification type. */ 1970e6c08586SUlf Hansson if (notify_type == EXT_CSD_POWER_OFF_LONG) 1971e6c08586SUlf Hansson timeout = card->ext_csd.power_off_longtime; 1972e6c08586SUlf Hansson 1973878e200bSUlf Hansson err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1974e6c08586SUlf Hansson EXT_CSD_POWER_OFF_NOTIFICATION, 197502098ccdSUlf Hansson notify_type, timeout, 0, false, false); 1976e6c08586SUlf Hansson if (err) 1977e6c08586SUlf Hansson pr_err("%s: Power Off Notification timed out, %u\n", 1978e6c08586SUlf Hansson mmc_hostname(card->host), timeout); 1979e6c08586SUlf Hansson 1980e6c08586SUlf Hansson /* Disable the power off notification after the switch operation. */ 1981e6c08586SUlf Hansson card->ext_csd.power_off_notification = EXT_CSD_NO_POWER_NOTIFICATION; 1982e6c08586SUlf Hansson 1983e6c08586SUlf Hansson return err; 1984e6c08586SUlf Hansson } 1985e6c08586SUlf Hansson 19866abaa0c9SPierre Ossman /* 19876abaa0c9SPierre Ossman * Host is being removed. Free up the current card. 19886abaa0c9SPierre Ossman */ 19896abaa0c9SPierre Ossman static void mmc_remove(struct mmc_host *host) 19906abaa0c9SPierre Ossman { 19916abaa0c9SPierre Ossman mmc_remove_card(host->card); 19926abaa0c9SPierre Ossman host->card = NULL; 19936abaa0c9SPierre Ossman } 19946abaa0c9SPierre Ossman 19956abaa0c9SPierre Ossman /* 1996d3049504SAdrian Hunter * Card detection - card is alive. 1997d3049504SAdrian Hunter */ 1998d3049504SAdrian Hunter static int mmc_alive(struct mmc_host *host) 1999d3049504SAdrian Hunter { 2000d3049504SAdrian Hunter return mmc_send_status(host->card, NULL); 2001d3049504SAdrian Hunter } 2002d3049504SAdrian Hunter 2003d3049504SAdrian Hunter /* 20046abaa0c9SPierre Ossman * Card detection callback from host. 20056abaa0c9SPierre Ossman */ 20066abaa0c9SPierre Ossman static void mmc_detect(struct mmc_host *host) 20076abaa0c9SPierre Ossman { 20086abaa0c9SPierre Ossman int err; 20096abaa0c9SPierre Ossman 20106c0cedd1SAdrian Hunter mmc_get_card(host->card, NULL); 20116abaa0c9SPierre Ossman 20126abaa0c9SPierre Ossman /* 20136abaa0c9SPierre Ossman * Just check if our card has been removed. 20146abaa0c9SPierre Ossman */ 2015d3049504SAdrian Hunter err = _mmc_detect_card_removed(host); 20166abaa0c9SPierre Ossman 20176c0cedd1SAdrian Hunter mmc_put_card(host->card, NULL); 20187ea239d9SPierre Ossman 201917b0429dSPierre Ossman if (err) { 20204101c16aSPierre Ossman mmc_remove(host); 20216abaa0c9SPierre Ossman 20226abaa0c9SPierre Ossman mmc_claim_host(host); 20236abaa0c9SPierre Ossman mmc_detach_bus(host); 20247f7e4129SUlf Hansson mmc_power_off(host); 20256abaa0c9SPierre Ossman mmc_release_host(host); 20266abaa0c9SPierre Ossman } 20276abaa0c9SPierre Ossman } 20286abaa0c9SPierre Ossman 202903d071fcSUlf Hansson static int _mmc_suspend(struct mmc_host *host, bool is_suspend) 20306abaa0c9SPierre Ossman { 2031c3805467SBalaji T K int err = 0; 203203d071fcSUlf Hansson unsigned int notify_type = is_suspend ? EXT_CSD_POWER_OFF_SHORT : 203303d071fcSUlf Hansson EXT_CSD_POWER_OFF_LONG; 2034c3805467SBalaji T K 20356abaa0c9SPierre Ossman mmc_claim_host(host); 2036881d926dSMaya Erez 20379ec775f7SUlf Hansson if (mmc_card_suspended(host->card)) 20389ec775f7SUlf Hansson goto out; 20399ec775f7SUlf Hansson 204010e5d965SUlf Hansson err = mmc_flush_cache(host->card); 2041881d926dSMaya Erez if (err) 2042881d926dSMaya Erez goto out; 2043881d926dSMaya Erez 204443235679SUlf Hansson if (mmc_can_poweroff_notify(host->card) && 2045ec02760bSYoshihiro Shimoda ((host->caps2 & MMC_CAP2_FULL_PWR_CYCLE) || !is_suspend || 2046ec02760bSYoshihiro Shimoda (host->caps2 & MMC_CAP2_FULL_PWR_CYCLE_IN_SUSPEND))) 204703d071fcSUlf Hansson err = mmc_poweroff_notify(host->card, notify_type); 204807a68216SUlf Hansson else if (mmc_can_sleep(host->card)) 204907a68216SUlf Hansson err = mmc_sleep(host); 2050e6c08586SUlf Hansson else if (!mmc_host_is_spi(host)) 205185e727edSJaehoon Chung err = mmc_deselect_cards(host); 205295cdfb72SNicolas Pitre 20539ec775f7SUlf Hansson if (!err) { 205474590263SUlf Hansson mmc_power_off(host); 20559ec775f7SUlf Hansson mmc_card_set_suspended(host->card); 20569ec775f7SUlf Hansson } 2057881d926dSMaya Erez out: 2058881d926dSMaya Erez mmc_release_host(host); 2059c3805467SBalaji T K return err; 20606abaa0c9SPierre Ossman } 20616abaa0c9SPierre Ossman 20626abaa0c9SPierre Ossman /* 20630cb403a2SUlf Hansson * Suspend callback 206403d071fcSUlf Hansson */ 206503d071fcSUlf Hansson static int mmc_suspend(struct mmc_host *host) 206603d071fcSUlf Hansson { 20670cb403a2SUlf Hansson int err; 20680cb403a2SUlf Hansson 20690cb403a2SUlf Hansson err = _mmc_suspend(host, true); 20700cb403a2SUlf Hansson if (!err) { 20710cb403a2SUlf Hansson pm_runtime_disable(&host->card->dev); 20720cb403a2SUlf Hansson pm_runtime_set_suspended(&host->card->dev); 20730cb403a2SUlf Hansson } 20740cb403a2SUlf Hansson 20750cb403a2SUlf Hansson return err; 207603d071fcSUlf Hansson } 207703d071fcSUlf Hansson 207803d071fcSUlf Hansson /* 20796abaa0c9SPierre Ossman * This function tries to determine if the same card is still present 20806abaa0c9SPierre Ossman * and, if so, restore all state to it. 20816abaa0c9SPierre Ossman */ 20820cb403a2SUlf Hansson static int _mmc_resume(struct mmc_host *host) 20836abaa0c9SPierre Ossman { 20849ec775f7SUlf Hansson int err = 0; 20856abaa0c9SPierre Ossman 20866abaa0c9SPierre Ossman mmc_claim_host(host); 20879ec775f7SUlf Hansson 20889ec775f7SUlf Hansson if (!mmc_card_suspended(host->card)) 20899ec775f7SUlf Hansson goto out; 20909ec775f7SUlf Hansson 209169041150SUlf Hansson mmc_power_up(host, host->card->ocr); 209269041150SUlf Hansson err = mmc_init_card(host, host->card->ocr, host->card); 20939ec775f7SUlf Hansson mmc_card_clr_suspended(host->card); 20942986d0bfSPierre Ossman 20959ec775f7SUlf Hansson out: 20969ec775f7SUlf Hansson mmc_release_host(host); 209795cdfb72SNicolas Pitre return err; 20986abaa0c9SPierre Ossman } 20996abaa0c9SPierre Ossman 21009ec775f7SUlf Hansson /* 21019ec775f7SUlf Hansson * Shutdown callback 21029ec775f7SUlf Hansson */ 21039ec775f7SUlf Hansson static int mmc_shutdown(struct mmc_host *host) 21049ec775f7SUlf Hansson { 21059ec775f7SUlf Hansson int err = 0; 21069ec775f7SUlf Hansson 21079ec775f7SUlf Hansson /* 21089ec775f7SUlf Hansson * In a specific case for poweroff notify, we need to resume the card 21099ec775f7SUlf Hansson * before we can shutdown it properly. 21109ec775f7SUlf Hansson */ 21119ec775f7SUlf Hansson if (mmc_can_poweroff_notify(host->card) && 21129ec775f7SUlf Hansson !(host->caps2 & MMC_CAP2_FULL_PWR_CYCLE)) 21130cb403a2SUlf Hansson err = _mmc_resume(host); 21149ec775f7SUlf Hansson 21159ec775f7SUlf Hansson if (!err) 21169ec775f7SUlf Hansson err = _mmc_suspend(host, false); 21179ec775f7SUlf Hansson 21189ec775f7SUlf Hansson return err; 21199ec775f7SUlf Hansson } 2120c4d770d7SUlf Hansson 2121c4d770d7SUlf Hansson /* 21220cb403a2SUlf Hansson * Callback for resume. 21230cb403a2SUlf Hansson */ 21240cb403a2SUlf Hansson static int mmc_resume(struct mmc_host *host) 21250cb403a2SUlf Hansson { 21260cb403a2SUlf Hansson pm_runtime_enable(&host->card->dev); 2127c29536e8SUlf Hansson return 0; 21280cb403a2SUlf Hansson } 21290cb403a2SUlf Hansson 21300cb403a2SUlf Hansson /* 2131c4d770d7SUlf Hansson * Callback for runtime_suspend. 2132c4d770d7SUlf Hansson */ 2133c4d770d7SUlf Hansson static int mmc_runtime_suspend(struct mmc_host *host) 2134c4d770d7SUlf Hansson { 2135c4d770d7SUlf Hansson int err; 2136c4d770d7SUlf Hansson 2137c4d770d7SUlf Hansson if (!(host->caps & MMC_CAP_AGGRESSIVE_PM)) 2138c4d770d7SUlf Hansson return 0; 2139c4d770d7SUlf Hansson 21400cb403a2SUlf Hansson err = _mmc_suspend(host, true); 21410cc81a8cSUlf Hansson if (err) 2142f42cf8d6SMasanari Iida pr_err("%s: error %d doing aggressive suspend\n", 2143c4d770d7SUlf Hansson mmc_hostname(host), err); 2144c4d770d7SUlf Hansson 2145c4d770d7SUlf Hansson return err; 2146c4d770d7SUlf Hansson } 2147c4d770d7SUlf Hansson 2148c4d770d7SUlf Hansson /* 2149c4d770d7SUlf Hansson * Callback for runtime_resume. 2150c4d770d7SUlf Hansson */ 2151c4d770d7SUlf Hansson static int mmc_runtime_resume(struct mmc_host *host) 2152c4d770d7SUlf Hansson { 2153c4d770d7SUlf Hansson int err; 2154c4d770d7SUlf Hansson 21550cb403a2SUlf Hansson err = _mmc_resume(host); 2156520322d9SAdrian Hunter if (err && err != -ENOMEDIUM) 2157c29536e8SUlf Hansson pr_err("%s: error %d doing runtime resume\n", 2158c4d770d7SUlf Hansson mmc_hostname(host), err); 2159c4d770d7SUlf Hansson 2160c4d770d7SUlf Hansson return 0; 2161c4d770d7SUlf Hansson } 2162c4d770d7SUlf Hansson 216388bed3a6SUlf Hansson static int mmc_can_reset(struct mmc_card *card) 2164f855a371SJohan Rudholm { 2165f855a371SJohan Rudholm u8 rst_n_function; 2166f855a371SJohan Rudholm 2167f855a371SJohan Rudholm rst_n_function = card->ext_csd.rst_n_function; 2168f855a371SJohan Rudholm if ((rst_n_function & EXT_CSD_RST_N_EN_MASK) != EXT_CSD_RST_N_ENABLED) 2169f855a371SJohan Rudholm return 0; 2170f855a371SJohan Rudholm return 1; 2171f855a371SJohan Rudholm } 2172f855a371SJohan Rudholm 21733a3db603SUlf Hansson static int _mmc_hw_reset(struct mmc_host *host) 2174f855a371SJohan Rudholm { 2175f855a371SJohan Rudholm struct mmc_card *card = host->card; 2176f855a371SJohan Rudholm 2177437db4c6SAdrian Hunter /* 2178437db4c6SAdrian Hunter * In the case of recovery, we can't expect flushing the cache to work 2179437db4c6SAdrian Hunter * always, but we have a go and ignore errors. 2180437db4c6SAdrian Hunter */ 2181437db4c6SAdrian Hunter mmc_flush_cache(host->card); 2182437db4c6SAdrian Hunter 21834e6c7178SGwendal Grignou if ((host->caps & MMC_CAP_HW_RESET) && host->ops->hw_reset && 21844e6c7178SGwendal Grignou mmc_can_reset(card)) { 21854e6c7178SGwendal Grignou /* If the card accept RST_n signal, send it. */ 2186f855a371SJohan Rudholm mmc_set_clock(host, host->f_init); 2187f855a371SJohan Rudholm host->ops->hw_reset(host); 2188f855a371SJohan Rudholm /* Set initial state and call mmc_set_ios */ 2189f855a371SJohan Rudholm mmc_set_initial_state(host); 21904e6c7178SGwendal Grignou } else { 21914e6c7178SGwendal Grignou /* Do a brute force power cycle */ 21924e6c7178SGwendal Grignou mmc_power_cycle(host, card->ocr); 219352c8212dSUlf Hansson mmc_pwrseq_reset(host); 21944e6c7178SGwendal Grignou } 2195364549ddSUlf Hansson return mmc_init_card(host, card->ocr, card); 2196f855a371SJohan Rudholm } 2197f855a371SJohan Rudholm 21989feae246SAdrian Hunter static const struct mmc_bus_ops mmc_ops = { 21999feae246SAdrian Hunter .remove = mmc_remove, 22009feae246SAdrian Hunter .detect = mmc_detect, 22019feae246SAdrian Hunter .suspend = mmc_suspend, 22029feae246SAdrian Hunter .resume = mmc_resume, 2203c4d770d7SUlf Hansson .runtime_suspend = mmc_runtime_suspend, 2204c4d770d7SUlf Hansson .runtime_resume = mmc_runtime_resume, 2205d3049504SAdrian Hunter .alive = mmc_alive, 2206486fdbbcSUlf Hansson .shutdown = mmc_shutdown, 22073a3db603SUlf Hansson .hw_reset = _mmc_hw_reset, 22089feae246SAdrian Hunter }; 22099feae246SAdrian Hunter 22106abaa0c9SPierre Ossman /* 22116abaa0c9SPierre Ossman * Starting point for MMC card init. 22126abaa0c9SPierre Ossman */ 2213807e8e40SAndy Ross int mmc_attach_mmc(struct mmc_host *host) 22146abaa0c9SPierre Ossman { 22156abaa0c9SPierre Ossman int err; 221669041150SUlf Hansson u32 ocr, rocr; 22176abaa0c9SPierre Ossman 2218d84075c8SPierre Ossman WARN_ON(!host->claimed); 22196abaa0c9SPierre Ossman 222044669034SStefan Nilsson XK /* Set correct bus mode for MMC before attempting attach */ 222144669034SStefan Nilsson XK if (!mmc_host_is_spi(host)) 222244669034SStefan Nilsson XK mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); 222344669034SStefan Nilsson XK 2224807e8e40SAndy Ross err = mmc_send_op_cond(host, 0, &ocr); 2225807e8e40SAndy Ross if (err) 2226807e8e40SAndy Ross return err; 2227807e8e40SAndy Ross 22282501c917SUlf Hansson mmc_attach_bus(host, &mmc_ops); 22298f230f45STakashi Iwai if (host->ocr_avail_mmc) 22308f230f45STakashi Iwai host->ocr_avail = host->ocr_avail_mmc; 22316abaa0c9SPierre Ossman 22326abaa0c9SPierre Ossman /* 2233af517150SDavid Brownell * We need to get OCR a different way for SPI. 2234af517150SDavid Brownell */ 2235af517150SDavid Brownell if (mmc_host_is_spi(host)) { 2236af517150SDavid Brownell err = mmc_spi_read_ocr(host, 1, &ocr); 2237af517150SDavid Brownell if (err) 2238af517150SDavid Brownell goto err; 2239af517150SDavid Brownell } 2240af517150SDavid Brownell 224169041150SUlf Hansson rocr = mmc_select_voltage(host, ocr); 22426abaa0c9SPierre Ossman 22436abaa0c9SPierre Ossman /* 22446abaa0c9SPierre Ossman * Can we support the voltage of the card? 22456abaa0c9SPierre Ossman */ 224669041150SUlf Hansson if (!rocr) { 2247109b5bedSPierre Ossman err = -EINVAL; 22486abaa0c9SPierre Ossman goto err; 2249109b5bedSPierre Ossman } 22506abaa0c9SPierre Ossman 22516abaa0c9SPierre Ossman /* 22526abaa0c9SPierre Ossman * Detect and init the card. 22536abaa0c9SPierre Ossman */ 225469041150SUlf Hansson err = mmc_init_card(host, rocr, NULL); 225517b0429dSPierre Ossman if (err) 22566abaa0c9SPierre Ossman goto err; 22576abaa0c9SPierre Ossman 22586abaa0c9SPierre Ossman mmc_release_host(host); 22594101c16aSPierre Ossman err = mmc_add_card(host->card); 22607ea239d9SPierre Ossman if (err) 22612986d0bfSPierre Ossman goto remove_card; 22627ea239d9SPierre Ossman 22632860d060SSergei Shtylyov mmc_claim_host(host); 22647ea239d9SPierre Ossman return 0; 22657ea239d9SPierre Ossman 22662986d0bfSPierre Ossman remove_card: 22676abaa0c9SPierre Ossman mmc_remove_card(host->card); 22682986d0bfSPierre Ossman mmc_claim_host(host); 2269807e8e40SAndy Ross host->card = NULL; 22707ea239d9SPierre Ossman err: 22717ea239d9SPierre Ossman mmc_detach_bus(host); 22727ea239d9SPierre Ossman 2273a3c76eb9SGirish K S pr_err("%s: error %d whilst initialising MMC card\n", 2274109b5bedSPierre Ossman mmc_hostname(host), err); 2275109b5bedSPierre Ossman 2276adf66a0dSPierre Ossman return err; 22777ea239d9SPierre Ossman } 2278