17ea239d9SPierre Ossman /* 270f10482SPierre Ossman * linux/drivers/mmc/core/mmc.c 37ea239d9SPierre Ossman * 47ea239d9SPierre Ossman * Copyright (C) 2003-2004 Russell King, All Rights Reserved. 57ea239d9SPierre Ossman * Copyright (C) 2005-2007 Pierre Ossman, All Rights Reserved. 67ea239d9SPierre Ossman * MMCv4 support Copyright (C) 2006 Philip Langdale, All Rights Reserved. 77ea239d9SPierre Ossman * 87ea239d9SPierre Ossman * This program is free software; you can redistribute it and/or modify 97ea239d9SPierre Ossman * it under the terms of the GNU General Public License version 2 as 107ea239d9SPierre Ossman * published by the Free Software Foundation. 117ea239d9SPierre Ossman */ 127ea239d9SPierre Ossman 137ea239d9SPierre Ossman #include <linux/err.h> 1481f8a7beSHans de Goede #include <linux/of.h> 155a0e3ad6STejun Heo #include <linux/slab.h> 160205a904SPaul Gortmaker #include <linux/stat.h> 170cb403a2SUlf Hansson #include <linux/pm_runtime.h> 187ea239d9SPierre Ossman 197ea239d9SPierre Ossman #include <linux/mmc/host.h> 207ea239d9SPierre Ossman #include <linux/mmc/card.h> 217ea239d9SPierre Ossman #include <linux/mmc/mmc.h> 227ea239d9SPierre Ossman 237ea239d9SPierre Ossman #include "core.h" 24436f8daaSAdrian Hunter #include "host.h" 254101c16aSPierre Ossman #include "bus.h" 267ea239d9SPierre Ossman #include "mmc_ops.h" 274c4cb171SPhilip Rakity #include "sd_ops.h" 287ea239d9SPierre Ossman 29fe1b5700SUlf Hansson #define DEFAULT_CMD6_TIMEOUT_MS 500 30fe1b5700SUlf Hansson 317ea239d9SPierre Ossman static const unsigned int tran_exp[] = { 327ea239d9SPierre Ossman 10000, 100000, 1000000, 10000000, 337ea239d9SPierre Ossman 0, 0, 0, 0 347ea239d9SPierre Ossman }; 357ea239d9SPierre Ossman 367ea239d9SPierre Ossman static const unsigned char tran_mant[] = { 377ea239d9SPierre Ossman 0, 10, 12, 13, 15, 20, 25, 30, 387ea239d9SPierre Ossman 35, 40, 45, 50, 55, 60, 70, 80, 397ea239d9SPierre Ossman }; 407ea239d9SPierre Ossman 417ea239d9SPierre Ossman static const unsigned int tacc_exp[] = { 427ea239d9SPierre Ossman 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, 437ea239d9SPierre Ossman }; 447ea239d9SPierre Ossman 457ea239d9SPierre Ossman static const unsigned int tacc_mant[] = { 467ea239d9SPierre Ossman 0, 10, 12, 13, 15, 20, 25, 30, 477ea239d9SPierre Ossman 35, 40, 45, 50, 55, 60, 70, 80, 487ea239d9SPierre Ossman }; 497ea239d9SPierre Ossman 505320226aSPratibhasagar V static const struct mmc_fixup mmc_ext_csd_fixups[] = { 515320226aSPratibhasagar V /* 525320226aSPratibhasagar V * Certain Hynix eMMC 4.41 cards might get broken when HPI feature 535320226aSPratibhasagar V * is used so disable the HPI feature for such buggy cards. 545320226aSPratibhasagar V */ 555320226aSPratibhasagar V MMC_FIXUP_EXT_CSD_REV(CID_NAME_ANY, CID_MANFID_HYNIX, 565320226aSPratibhasagar V 0x014a, add_quirk, MMC_QUIRK_BROKEN_HPI, 5), 575320226aSPratibhasagar V 585320226aSPratibhasagar V END_FIXUP 595320226aSPratibhasagar V }; 605320226aSPratibhasagar V 617ea239d9SPierre Ossman #define UNSTUFF_BITS(resp,start,size) \ 627ea239d9SPierre Ossman ({ \ 637ea239d9SPierre Ossman const int __size = size; \ 647ea239d9SPierre Ossman const u32 __mask = (__size < 32 ? 1 << __size : 0) - 1; \ 657ea239d9SPierre Ossman const int __off = 3 - ((start) / 32); \ 667ea239d9SPierre Ossman const int __shft = (start) & 31; \ 677ea239d9SPierre Ossman u32 __res; \ 687ea239d9SPierre Ossman \ 697ea239d9SPierre Ossman __res = resp[__off] >> __shft; \ 707ea239d9SPierre Ossman if (__size + __shft > 32) \ 717ea239d9SPierre Ossman __res |= resp[__off-1] << ((32 - __shft) % 32); \ 727ea239d9SPierre Ossman __res & __mask; \ 737ea239d9SPierre Ossman }) 747ea239d9SPierre Ossman 757ea239d9SPierre Ossman /* 767ea239d9SPierre Ossman * Given the decoded CSD structure, decode the raw CID to our CID structure. 777ea239d9SPierre Ossman */ 78bd766312SPierre Ossman static int mmc_decode_cid(struct mmc_card *card) 797ea239d9SPierre Ossman { 807ea239d9SPierre Ossman u32 *resp = card->raw_cid; 817ea239d9SPierre Ossman 827ea239d9SPierre Ossman /* 837ea239d9SPierre Ossman * The selection of the format here is based upon published 847ea239d9SPierre Ossman * specs from sandisk and from what people have reported. 857ea239d9SPierre Ossman */ 867ea239d9SPierre Ossman switch (card->csd.mmca_vsn) { 877ea239d9SPierre Ossman case 0: /* MMC v1.0 - v1.2 */ 887ea239d9SPierre Ossman case 1: /* MMC v1.4 */ 897ea239d9SPierre Ossman card->cid.manfid = UNSTUFF_BITS(resp, 104, 24); 907ea239d9SPierre Ossman card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); 917ea239d9SPierre Ossman card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); 927ea239d9SPierre Ossman card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); 937ea239d9SPierre Ossman card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); 947ea239d9SPierre Ossman card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); 957ea239d9SPierre Ossman card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); 967ea239d9SPierre Ossman card->cid.prod_name[6] = UNSTUFF_BITS(resp, 48, 8); 977ea239d9SPierre Ossman card->cid.hwrev = UNSTUFF_BITS(resp, 44, 4); 987ea239d9SPierre Ossman card->cid.fwrev = UNSTUFF_BITS(resp, 40, 4); 997ea239d9SPierre Ossman card->cid.serial = UNSTUFF_BITS(resp, 16, 24); 1007ea239d9SPierre Ossman card->cid.month = UNSTUFF_BITS(resp, 12, 4); 1017ea239d9SPierre Ossman card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; 1027ea239d9SPierre Ossman break; 1037ea239d9SPierre Ossman 1047ea239d9SPierre Ossman case 2: /* MMC v2.0 - v2.2 */ 1057ea239d9SPierre Ossman case 3: /* MMC v3.1 - v3.3 */ 1067ea239d9SPierre Ossman case 4: /* MMC v4 */ 1077ea239d9SPierre Ossman card->cid.manfid = UNSTUFF_BITS(resp, 120, 8); 1087ea239d9SPierre Ossman card->cid.oemid = UNSTUFF_BITS(resp, 104, 16); 1097ea239d9SPierre Ossman card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); 1107ea239d9SPierre Ossman card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); 1117ea239d9SPierre Ossman card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); 1127ea239d9SPierre Ossman card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); 1137ea239d9SPierre Ossman card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); 1147ea239d9SPierre Ossman card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); 11551e7e8b6SBernie Thompson card->cid.prv = UNSTUFF_BITS(resp, 48, 8); 1167ea239d9SPierre Ossman card->cid.serial = UNSTUFF_BITS(resp, 16, 32); 1177ea239d9SPierre Ossman card->cid.month = UNSTUFF_BITS(resp, 12, 4); 1187ea239d9SPierre Ossman card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; 1197ea239d9SPierre Ossman break; 1207ea239d9SPierre Ossman 1217ea239d9SPierre Ossman default: 122a3c76eb9SGirish K S pr_err("%s: card has unknown MMCA version %d\n", 1237ea239d9SPierre Ossman mmc_hostname(card->host), card->csd.mmca_vsn); 124bd766312SPierre Ossman return -EINVAL; 1257ea239d9SPierre Ossman } 126bd766312SPierre Ossman 127bd766312SPierre Ossman return 0; 1287ea239d9SPierre Ossman } 1297ea239d9SPierre Ossman 130dfe86cbaSAdrian Hunter static void mmc_set_erase_size(struct mmc_card *card) 131dfe86cbaSAdrian Hunter { 132dfe86cbaSAdrian Hunter if (card->ext_csd.erase_group_def & 1) 133dfe86cbaSAdrian Hunter card->erase_size = card->ext_csd.hc_erase_size; 134dfe86cbaSAdrian Hunter else 135dfe86cbaSAdrian Hunter card->erase_size = card->csd.erase_size; 136dfe86cbaSAdrian Hunter 137dfe86cbaSAdrian Hunter mmc_init_erase(card); 138dfe86cbaSAdrian Hunter } 139dfe86cbaSAdrian Hunter 1407ea239d9SPierre Ossman /* 1417ea239d9SPierre Ossman * Given a 128-bit response, decode to our card CSD structure. 1427ea239d9SPierre Ossman */ 143bd766312SPierre Ossman static int mmc_decode_csd(struct mmc_card *card) 1447ea239d9SPierre Ossman { 1457ea239d9SPierre Ossman struct mmc_csd *csd = &card->csd; 146dfe86cbaSAdrian Hunter unsigned int e, m, a, b; 1477ea239d9SPierre Ossman u32 *resp = card->raw_csd; 1487ea239d9SPierre Ossman 1497ea239d9SPierre Ossman /* 1507ea239d9SPierre Ossman * We only understand CSD structure v1.1 and v1.2. 1517ea239d9SPierre Ossman * v1.2 has extra information in bits 15, 11 and 10. 1526da24b78SKyungmin Park * We also support eMMC v4.4 & v4.41. 1537ea239d9SPierre Ossman */ 1546da24b78SKyungmin Park csd->structure = UNSTUFF_BITS(resp, 126, 2); 1556da24b78SKyungmin Park if (csd->structure == 0) { 156a3c76eb9SGirish K S pr_err("%s: unrecognised CSD structure version %d\n", 1576da24b78SKyungmin Park mmc_hostname(card->host), csd->structure); 158bd766312SPierre Ossman return -EINVAL; 1597ea239d9SPierre Ossman } 1607ea239d9SPierre Ossman 1617ea239d9SPierre Ossman csd->mmca_vsn = UNSTUFF_BITS(resp, 122, 4); 1627ea239d9SPierre Ossman m = UNSTUFF_BITS(resp, 115, 4); 1637ea239d9SPierre Ossman e = UNSTUFF_BITS(resp, 112, 3); 1647ea239d9SPierre Ossman csd->tacc_ns = (tacc_exp[e] * tacc_mant[m] + 9) / 10; 1657ea239d9SPierre Ossman csd->tacc_clks = UNSTUFF_BITS(resp, 104, 8) * 100; 1667ea239d9SPierre Ossman 1677ea239d9SPierre Ossman m = UNSTUFF_BITS(resp, 99, 4); 1687ea239d9SPierre Ossman e = UNSTUFF_BITS(resp, 96, 3); 1697ea239d9SPierre Ossman csd->max_dtr = tran_exp[e] * tran_mant[m]; 1707ea239d9SPierre Ossman csd->cmdclass = UNSTUFF_BITS(resp, 84, 12); 1717ea239d9SPierre Ossman 1727ea239d9SPierre Ossman e = UNSTUFF_BITS(resp, 47, 3); 1737ea239d9SPierre Ossman m = UNSTUFF_BITS(resp, 62, 12); 1747ea239d9SPierre Ossman csd->capacity = (1 + m) << (e + 2); 1757ea239d9SPierre Ossman 1767ea239d9SPierre Ossman csd->read_blkbits = UNSTUFF_BITS(resp, 80, 4); 1777ea239d9SPierre Ossman csd->read_partial = UNSTUFF_BITS(resp, 79, 1); 1787ea239d9SPierre Ossman csd->write_misalign = UNSTUFF_BITS(resp, 78, 1); 1797ea239d9SPierre Ossman csd->read_misalign = UNSTUFF_BITS(resp, 77, 1); 1803d705d14SSascha Hauer csd->dsr_imp = UNSTUFF_BITS(resp, 76, 1); 1817ea239d9SPierre Ossman csd->r2w_factor = UNSTUFF_BITS(resp, 26, 3); 1827ea239d9SPierre Ossman csd->write_blkbits = UNSTUFF_BITS(resp, 22, 4); 1837ea239d9SPierre Ossman csd->write_partial = UNSTUFF_BITS(resp, 21, 1); 184bd766312SPierre Ossman 185dfe86cbaSAdrian Hunter if (csd->write_blkbits >= 9) { 186dfe86cbaSAdrian Hunter a = UNSTUFF_BITS(resp, 42, 5); 187dfe86cbaSAdrian Hunter b = UNSTUFF_BITS(resp, 37, 5); 188dfe86cbaSAdrian Hunter csd->erase_size = (a + 1) * (b + 1); 189dfe86cbaSAdrian Hunter csd->erase_size <<= csd->write_blkbits - 9; 190dfe86cbaSAdrian Hunter } 191dfe86cbaSAdrian Hunter 192bd766312SPierre Ossman return 0; 1937ea239d9SPierre Ossman } 1947ea239d9SPierre Ossman 19596cf5f02SSeungwon Jeon static void mmc_select_card_type(struct mmc_card *card) 19696cf5f02SSeungwon Jeon { 19796cf5f02SSeungwon Jeon struct mmc_host *host = card->host; 1980a5b6438SSeungwon Jeon u8 card_type = card->ext_csd.raw_card_type; 1995f1a4dd0SLee Jones u32 caps = host->caps, caps2 = host->caps2; 200577fb131SSeungwon Jeon unsigned int hs_max_dtr = 0, hs200_max_dtr = 0; 2012415c0efSSeungwon Jeon unsigned int avail_type = 0; 20296cf5f02SSeungwon Jeon 20396cf5f02SSeungwon Jeon if (caps & MMC_CAP_MMC_HIGHSPEED && 2042415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS_26) { 2052415c0efSSeungwon Jeon hs_max_dtr = MMC_HIGH_26_MAX_DTR; 2062415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS_26; 2072415c0efSSeungwon Jeon } 2082415c0efSSeungwon Jeon 2092415c0efSSeungwon Jeon if (caps & MMC_CAP_MMC_HIGHSPEED && 2102415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS_52) { 21196cf5f02SSeungwon Jeon hs_max_dtr = MMC_HIGH_52_MAX_DTR; 2122415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS_52; 2132415c0efSSeungwon Jeon } 21496cf5f02SSeungwon Jeon 2152415c0efSSeungwon Jeon if (caps & MMC_CAP_1_8V_DDR && 2162415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_DDR_1_8V) { 21796cf5f02SSeungwon Jeon hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; 2182415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_DDR_1_8V; 2192415c0efSSeungwon Jeon } 22096cf5f02SSeungwon Jeon 2212415c0efSSeungwon Jeon if (caps & MMC_CAP_1_2V_DDR && 2222415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_DDR_1_2V) { 2232415c0efSSeungwon Jeon hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; 2242415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_DDR_1_2V; 2252415c0efSSeungwon Jeon } 2262415c0efSSeungwon Jeon 2272415c0efSSeungwon Jeon if (caps2 & MMC_CAP2_HS200_1_8V_SDR && 2282415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS200_1_8V) { 229577fb131SSeungwon Jeon hs200_max_dtr = MMC_HS200_MAX_DTR; 2302415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS200_1_8V; 2312415c0efSSeungwon Jeon } 2322415c0efSSeungwon Jeon 2332415c0efSSeungwon Jeon if (caps2 & MMC_CAP2_HS200_1_2V_SDR && 2342415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS200_1_2V) { 235577fb131SSeungwon Jeon hs200_max_dtr = MMC_HS200_MAX_DTR; 2362415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS200_1_2V; 2372415c0efSSeungwon Jeon } 23896cf5f02SSeungwon Jeon 2390a5b6438SSeungwon Jeon if (caps2 & MMC_CAP2_HS400_1_8V && 2400a5b6438SSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS400_1_8V) { 2410a5b6438SSeungwon Jeon hs200_max_dtr = MMC_HS200_MAX_DTR; 2420a5b6438SSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS400_1_8V; 2430a5b6438SSeungwon Jeon } 2440a5b6438SSeungwon Jeon 2450a5b6438SSeungwon Jeon if (caps2 & MMC_CAP2_HS400_1_2V && 2460a5b6438SSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS400_1_2V) { 2470a5b6438SSeungwon Jeon hs200_max_dtr = MMC_HS200_MAX_DTR; 2480a5b6438SSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS400_1_2V; 2490a5b6438SSeungwon Jeon } 2500a5b6438SSeungwon Jeon 25181ac2af6SShawn Lin if ((caps2 & MMC_CAP2_HS400_ES) && 25281ac2af6SShawn Lin card->ext_csd.strobe_support && 25381ac2af6SShawn Lin (avail_type & EXT_CSD_CARD_TYPE_HS400)) 25481ac2af6SShawn Lin avail_type |= EXT_CSD_CARD_TYPE_HS400ES; 25581ac2af6SShawn Lin 25696cf5f02SSeungwon Jeon card->ext_csd.hs_max_dtr = hs_max_dtr; 257577fb131SSeungwon Jeon card->ext_csd.hs200_max_dtr = hs200_max_dtr; 2582415c0efSSeungwon Jeon card->mmc_avail_type = avail_type; 25996cf5f02SSeungwon Jeon } 26096cf5f02SSeungwon Jeon 261b4493eeaSGrégory Soutadé static void mmc_manage_enhanced_area(struct mmc_card *card, u8 *ext_csd) 262b4493eeaSGrégory Soutadé { 263994324bbSGrégory Soutadé u8 hc_erase_grp_sz, hc_wp_grp_sz; 264994324bbSGrégory Soutadé 265994324bbSGrégory Soutadé /* 266994324bbSGrégory Soutadé * Disable these attributes by default 267994324bbSGrégory Soutadé */ 268994324bbSGrégory Soutadé card->ext_csd.enhanced_area_offset = -EINVAL; 269994324bbSGrégory Soutadé card->ext_csd.enhanced_area_size = -EINVAL; 270b4493eeaSGrégory Soutadé 271b4493eeaSGrégory Soutadé /* 272b4493eeaSGrégory Soutadé * Enhanced area feature support -- check whether the eMMC 273b4493eeaSGrégory Soutadé * card has the Enhanced area enabled. If so, export enhanced 274b4493eeaSGrégory Soutadé * area offset and size to user by adding sysfs interface. 275b4493eeaSGrégory Soutadé */ 276b4493eeaSGrégory Soutadé if ((ext_csd[EXT_CSD_PARTITION_SUPPORT] & 0x2) && 277b4493eeaSGrégory Soutadé (ext_csd[EXT_CSD_PARTITION_ATTRIBUTE] & 0x1)) { 278994324bbSGrégory Soutadé if (card->ext_csd.partition_setting_completed) { 279b4493eeaSGrégory Soutadé hc_erase_grp_sz = 280b4493eeaSGrégory Soutadé ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 281b4493eeaSGrégory Soutadé hc_wp_grp_sz = 282b4493eeaSGrégory Soutadé ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 283b4493eeaSGrégory Soutadé 284b4493eeaSGrégory Soutadé /* 285b4493eeaSGrégory Soutadé * calculate the enhanced data area offset, in bytes 286b4493eeaSGrégory Soutadé */ 287b4493eeaSGrégory Soutadé card->ext_csd.enhanced_area_offset = 288ded8a5f9SKuninori Morimoto (((unsigned long long)ext_csd[139]) << 24) + 289ded8a5f9SKuninori Morimoto (((unsigned long long)ext_csd[138]) << 16) + 290ded8a5f9SKuninori Morimoto (((unsigned long long)ext_csd[137]) << 8) + 291ded8a5f9SKuninori Morimoto (((unsigned long long)ext_csd[136])); 292b4493eeaSGrégory Soutadé if (mmc_card_blockaddr(card)) 293b4493eeaSGrégory Soutadé card->ext_csd.enhanced_area_offset <<= 9; 294b4493eeaSGrégory Soutadé /* 295b4493eeaSGrégory Soutadé * calculate the enhanced data area size, in kilobytes 296b4493eeaSGrégory Soutadé */ 297b4493eeaSGrégory Soutadé card->ext_csd.enhanced_area_size = 298b4493eeaSGrégory Soutadé (ext_csd[142] << 16) + (ext_csd[141] << 8) + 299b4493eeaSGrégory Soutadé ext_csd[140]; 300b4493eeaSGrégory Soutadé card->ext_csd.enhanced_area_size *= 301b4493eeaSGrégory Soutadé (size_t)(hc_erase_grp_sz * hc_wp_grp_sz); 302b4493eeaSGrégory Soutadé card->ext_csd.enhanced_area_size <<= 9; 303b4493eeaSGrégory Soutadé } else { 304994324bbSGrégory Soutadé pr_warn("%s: defines enhanced area without partition setting complete\n", 305994324bbSGrégory Soutadé mmc_hostname(card->host)); 306994324bbSGrégory Soutadé } 307b4493eeaSGrégory Soutadé } 308b4493eeaSGrégory Soutadé } 309b4493eeaSGrégory Soutadé 310b4493eeaSGrégory Soutadé static void mmc_manage_gp_partitions(struct mmc_card *card, u8 *ext_csd) 311b4493eeaSGrégory Soutadé { 312b4493eeaSGrégory Soutadé int idx; 313994324bbSGrégory Soutadé u8 hc_erase_grp_sz, hc_wp_grp_sz; 314994324bbSGrégory Soutadé unsigned int part_size; 315b4493eeaSGrégory Soutadé 316b4493eeaSGrégory Soutadé /* 317b4493eeaSGrégory Soutadé * General purpose partition feature support -- 318b4493eeaSGrégory Soutadé * If ext_csd has the size of general purpose partitions, 319b4493eeaSGrégory Soutadé * set size, part_cfg, partition name in mmc_part. 320b4493eeaSGrégory Soutadé */ 321b4493eeaSGrégory Soutadé if (ext_csd[EXT_CSD_PARTITION_SUPPORT] & 322b4493eeaSGrégory Soutadé EXT_CSD_PART_SUPPORT_PART_EN) { 323b4493eeaSGrégory Soutadé hc_erase_grp_sz = 324b4493eeaSGrégory Soutadé ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 325b4493eeaSGrégory Soutadé hc_wp_grp_sz = 326b4493eeaSGrégory Soutadé ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 327b4493eeaSGrégory Soutadé 328b4493eeaSGrégory Soutadé for (idx = 0; idx < MMC_NUM_GP_PARTITION; idx++) { 329b4493eeaSGrégory Soutadé if (!ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3] && 330b4493eeaSGrégory Soutadé !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] && 331b4493eeaSGrégory Soutadé !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2]) 332b4493eeaSGrégory Soutadé continue; 333994324bbSGrégory Soutadé if (card->ext_csd.partition_setting_completed == 0) { 334994324bbSGrégory Soutadé pr_warn("%s: has partition size defined without partition complete\n", 335994324bbSGrégory Soutadé mmc_hostname(card->host)); 336994324bbSGrégory Soutadé break; 337994324bbSGrégory Soutadé } 338b4493eeaSGrégory Soutadé part_size = 339b4493eeaSGrégory Soutadé (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2] 340b4493eeaSGrégory Soutadé << 16) + 341b4493eeaSGrégory Soutadé (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] 342b4493eeaSGrégory Soutadé << 8) + 343b4493eeaSGrégory Soutadé ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3]; 344b4493eeaSGrégory Soutadé part_size *= (size_t)(hc_erase_grp_sz * 345b4493eeaSGrégory Soutadé hc_wp_grp_sz); 346b4493eeaSGrégory Soutadé mmc_part_add(card, part_size << 19, 347b4493eeaSGrégory Soutadé EXT_CSD_PART_CONFIG_ACC_GP0 + idx, 348b4493eeaSGrégory Soutadé "gp%d", idx, false, 349b4493eeaSGrégory Soutadé MMC_BLK_DATA_AREA_GP); 350b4493eeaSGrégory Soutadé } 351b4493eeaSGrégory Soutadé } 352b4493eeaSGrégory Soutadé } 353b4493eeaSGrégory Soutadé 3541c447116SAdrian Hunter /* Minimum partition switch timeout in milliseconds */ 3551c447116SAdrian Hunter #define MMC_MIN_PART_SWITCH_TIME 300 3561c447116SAdrian Hunter 35708ee80ccSPhilip Rakity /* 35808ee80ccSPhilip Rakity * Decode extended CSD. 35908ee80ccSPhilip Rakity */ 360076ec38aSUlf Hansson static int mmc_decode_ext_csd(struct mmc_card *card, u8 *ext_csd) 36108ee80ccSPhilip Rakity { 362e0c368d5SNamjae Jeon int err = 0, idx; 363e0c368d5SNamjae Jeon unsigned int part_size; 36481f8a7beSHans de Goede struct device_node *np; 36581f8a7beSHans de Goede bool broken_hpi = false; 36608ee80ccSPhilip Rakity 3676da24b78SKyungmin Park /* Version is coded in the CSD_STRUCTURE byte in the EXT_CSD register */ 368f39b2dd9SPhilip Rakity card->ext_csd.raw_ext_csd_structure = ext_csd[EXT_CSD_STRUCTURE]; 3696da24b78SKyungmin Park if (card->csd.structure == 3) { 370f39b2dd9SPhilip Rakity if (card->ext_csd.raw_ext_csd_structure > 2) { 371a3c76eb9SGirish K S pr_err("%s: unrecognised EXT_CSD structure " 3728fdd8521SPierre Ossman "version %d\n", mmc_hostname(card->host), 373f39b2dd9SPhilip Rakity card->ext_csd.raw_ext_csd_structure); 3746da24b78SKyungmin Park err = -EINVAL; 3756da24b78SKyungmin Park goto out; 3766da24b78SKyungmin Park } 3776da24b78SKyungmin Park } 3786da24b78SKyungmin Park 37981f8a7beSHans de Goede np = mmc_of_find_child_device(card->host, 0); 38081f8a7beSHans de Goede if (np && of_device_is_compatible(np, "mmc-card")) 38181f8a7beSHans de Goede broken_hpi = of_property_read_bool(np, "broken-hpi"); 38281f8a7beSHans de Goede of_node_put(np); 38381f8a7beSHans de Goede 38403a59437SRomain Izard /* 38503a59437SRomain Izard * The EXT_CSD format is meant to be forward compatible. As long 38603a59437SRomain Izard * as CSD_STRUCTURE does not change, all values for EXT_CSD_REV 38703a59437SRomain Izard * are authorized, see JEDEC JESD84-B50 section B.8. 38803a59437SRomain Izard */ 3896da24b78SKyungmin Park card->ext_csd.rev = ext_csd[EXT_CSD_REV]; 390d7604d76SPierre Ossman 3915320226aSPratibhasagar V /* fixup device after ext_csd revision field is updated */ 3925320226aSPratibhasagar V mmc_fixup_device(card, mmc_ext_csd_fixups); 3935320226aSPratibhasagar V 394f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[0] = ext_csd[EXT_CSD_SEC_CNT + 0]; 395f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[1] = ext_csd[EXT_CSD_SEC_CNT + 1]; 396f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[2] = ext_csd[EXT_CSD_SEC_CNT + 2]; 397f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[3] = ext_csd[EXT_CSD_SEC_CNT + 3]; 398b1ebe384SJarkko Lavinen if (card->ext_csd.rev >= 2) { 3997ea239d9SPierre Ossman card->ext_csd.sectors = 4007ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 0] << 0 | 4017ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 1] << 8 | 4027ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 2] << 16 | 4037ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 3] << 24; 404fc8a0985SHanumath Prasad 405fc8a0985SHanumath Prasad /* Cards with density > 2GiB are sector addressed */ 406fc8a0985SHanumath Prasad if (card->ext_csd.sectors > (2u * 1024 * 1024 * 1024) / 512) 4077ea239d9SPierre Ossman mmc_card_set_blockaddr(card); 408d7604d76SPierre Ossman } 40996cf5f02SSeungwon Jeon 41081ac2af6SShawn Lin card->ext_csd.strobe_support = ext_csd[EXT_CSD_STROBE_SUPPORT]; 411f39b2dd9SPhilip Rakity card->ext_csd.raw_card_type = ext_csd[EXT_CSD_CARD_TYPE]; 41296cf5f02SSeungwon Jeon mmc_select_card_type(card); 4137ea239d9SPierre Ossman 414f39b2dd9SPhilip Rakity card->ext_csd.raw_s_a_timeout = ext_csd[EXT_CSD_S_A_TIMEOUT]; 415f39b2dd9SPhilip Rakity card->ext_csd.raw_erase_timeout_mult = 416f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; 417f39b2dd9SPhilip Rakity card->ext_csd.raw_hc_erase_grp_size = 418f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 419b1ebe384SJarkko Lavinen if (card->ext_csd.rev >= 3) { 420b1ebe384SJarkko Lavinen u8 sa_shift = ext_csd[EXT_CSD_S_A_TIMEOUT]; 421371a689fSAndrei Warkentin card->ext_csd.part_config = ext_csd[EXT_CSD_PART_CONFIG]; 422371a689fSAndrei Warkentin 423371a689fSAndrei Warkentin /* EXT_CSD value is in units of 10ms, but we store in ms */ 424371a689fSAndrei Warkentin card->ext_csd.part_time = 10 * ext_csd[EXT_CSD_PART_SWITCH_TIME]; 4251c447116SAdrian Hunter /* Some eMMC set the value too low so set a minimum */ 4261c447116SAdrian Hunter if (card->ext_csd.part_time && 4271c447116SAdrian Hunter card->ext_csd.part_time < MMC_MIN_PART_SWITCH_TIME) 4281c447116SAdrian Hunter card->ext_csd.part_time = MMC_MIN_PART_SWITCH_TIME; 429b1ebe384SJarkko Lavinen 430b1ebe384SJarkko Lavinen /* Sleep / awake timeout in 100ns units */ 431b1ebe384SJarkko Lavinen if (sa_shift > 0 && sa_shift <= 0x17) 432b1ebe384SJarkko Lavinen card->ext_csd.sa_timeout = 433b1ebe384SJarkko Lavinen 1 << ext_csd[EXT_CSD_S_A_TIMEOUT]; 434dfe86cbaSAdrian Hunter card->ext_csd.erase_group_def = 435dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_ERASE_GROUP_DEF]; 436dfe86cbaSAdrian Hunter card->ext_csd.hc_erase_timeout = 300 * 437dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; 438dfe86cbaSAdrian Hunter card->ext_csd.hc_erase_size = 439dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] << 10; 440f4c5522bSAndrei Warkentin 441f4c5522bSAndrei Warkentin card->ext_csd.rel_sectors = ext_csd[EXT_CSD_REL_WR_SEC_C]; 442371a689fSAndrei Warkentin 443371a689fSAndrei Warkentin /* 444371a689fSAndrei Warkentin * There are two boot regions of equal size, defined in 445371a689fSAndrei Warkentin * multiples of 128K. 446371a689fSAndrei Warkentin */ 447e0c368d5SNamjae Jeon if (ext_csd[EXT_CSD_BOOT_MULT] && mmc_boot_partition_access(card->host)) { 448e0c368d5SNamjae Jeon for (idx = 0; idx < MMC_NUM_BOOT_PARTITION; idx++) { 449e0c368d5SNamjae Jeon part_size = ext_csd[EXT_CSD_BOOT_MULT] << 17; 450e0c368d5SNamjae Jeon mmc_part_add(card, part_size, 451e0c368d5SNamjae Jeon EXT_CSD_PART_CONFIG_ACC_BOOT0 + idx, 452add710eaSJohan Rudholm "boot%d", idx, true, 453add710eaSJohan Rudholm MMC_BLK_DATA_AREA_BOOT); 454e0c368d5SNamjae Jeon } 455e0c368d5SNamjae Jeon } 456b1ebe384SJarkko Lavinen } 457b1ebe384SJarkko Lavinen 458f39b2dd9SPhilip Rakity card->ext_csd.raw_hc_erase_gap_size = 459dd13b4edSJurgen Heeks ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 460f39b2dd9SPhilip Rakity card->ext_csd.raw_sec_trim_mult = 461f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_SEC_TRIM_MULT]; 462f39b2dd9SPhilip Rakity card->ext_csd.raw_sec_erase_mult = 463f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_SEC_ERASE_MULT]; 464f39b2dd9SPhilip Rakity card->ext_csd.raw_sec_feature_support = 465f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; 466f39b2dd9SPhilip Rakity card->ext_csd.raw_trim_mult = 467f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_TRIM_MULT]; 468836dc2feSPhilip Rakity card->ext_csd.raw_partition_support = ext_csd[EXT_CSD_PARTITION_SUPPORT]; 469b097e07fSAdrian Hunter card->ext_csd.raw_driver_strength = ext_csd[EXT_CSD_DRIVER_STRENGTH]; 470dfe86cbaSAdrian Hunter if (card->ext_csd.rev >= 4) { 47169803d4fSGrégory Soutadé if (ext_csd[EXT_CSD_PARTITION_SETTING_COMPLETED] & 47269803d4fSGrégory Soutadé EXT_CSD_PART_SETTING_COMPLETED) 47369803d4fSGrégory Soutadé card->ext_csd.partition_setting_completed = 1; 47469803d4fSGrégory Soutadé else 47569803d4fSGrégory Soutadé card->ext_csd.partition_setting_completed = 0; 47669803d4fSGrégory Soutadé 477b4493eeaSGrégory Soutadé mmc_manage_enhanced_area(card, ext_csd); 478709de99dSChuanxiao Dong 479b4493eeaSGrégory Soutadé mmc_manage_gp_partitions(card, ext_csd); 480e0c368d5SNamjae Jeon 481dfe86cbaSAdrian Hunter card->ext_csd.sec_trim_mult = 482dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_SEC_TRIM_MULT]; 483dfe86cbaSAdrian Hunter card->ext_csd.sec_erase_mult = 484dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_SEC_ERASE_MULT]; 485dfe86cbaSAdrian Hunter card->ext_csd.sec_feature_support = 486dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; 487dfe86cbaSAdrian Hunter card->ext_csd.trim_timeout = 300 * 488dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_TRIM_MULT]; 489add710eaSJohan Rudholm 490add710eaSJohan Rudholm /* 491add710eaSJohan Rudholm * Note that the call to mmc_part_add above defaults to read 492add710eaSJohan Rudholm * only. If this default assumption is changed, the call must 493add710eaSJohan Rudholm * take into account the value of boot_locked below. 494add710eaSJohan Rudholm */ 495add710eaSJohan Rudholm card->ext_csd.boot_ro_lock = ext_csd[EXT_CSD_BOOT_WP]; 496add710eaSJohan Rudholm card->ext_csd.boot_ro_lockable = true; 49760443712SFredrik Soderstedt 49860443712SFredrik Soderstedt /* Save power class values */ 49960443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_52_195 = 50060443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_52_195]; 50160443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_26_195 = 50260443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_26_195]; 50360443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_52_360 = 50460443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_52_360]; 50560443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_26_360 = 50660443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_26_360]; 50760443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_200_195 = 50860443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_200_195]; 50960443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_200_360 = 51060443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_200_360]; 51160443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_ddr_52_195 = 51260443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_DDR_52_195]; 51360443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_ddr_52_360 = 51460443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_DDR_52_360]; 5150a5b6438SSeungwon Jeon card->ext_csd.raw_pwr_cl_ddr_200_360 = 5160a5b6438SSeungwon Jeon ext_csd[EXT_CSD_PWR_CL_DDR_200_360]; 517dfe86cbaSAdrian Hunter } 518dfe86cbaSAdrian Hunter 519b2499518SAdrian Hunter if (card->ext_csd.rev >= 5) { 5207c4f10acSRomain Izard /* Adjust production date as per JEDEC JESD84-B451 */ 5217c4f10acSRomain Izard if (card->cid.year < 2010) 5227c4f10acSRomain Izard card->cid.year += 16; 5237c4f10acSRomain Izard 524950d56acSJaehoon Chung /* check whether the eMMC card supports BKOPS */ 5255320226aSPratibhasagar V if (!mmc_card_broken_hpi(card) && 5265320226aSPratibhasagar V 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]; 5330501be64SAlexey Skidanov if (!card->ext_csd.man_bkops_en) 5344ec96b4cSWolfram Sang pr_debug("%s: MAN_BKOPS_EN bit is not set\n", 535950d56acSJaehoon Chung mmc_hostname(card->host)); 536950d56acSJaehoon Chung } 537950d56acSJaehoon Chung 538eb0d8f13SJaehoon Chung /* check whether the eMMC card supports HPI */ 5395320226aSPratibhasagar V if (!mmc_card_broken_hpi(card) && 5405320226aSPratibhasagar V !broken_hpi && (ext_csd[EXT_CSD_HPI_FEATURES] & 0x1)) { 541eb0d8f13SJaehoon Chung card->ext_csd.hpi = 1; 542eb0d8f13SJaehoon Chung if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x2) 543eb0d8f13SJaehoon Chung card->ext_csd.hpi_cmd = MMC_STOP_TRANSMISSION; 544eb0d8f13SJaehoon Chung else 545eb0d8f13SJaehoon Chung card->ext_csd.hpi_cmd = MMC_SEND_STATUS; 546eb0d8f13SJaehoon Chung /* 547eb0d8f13SJaehoon Chung * Indicate the maximum timeout to close 548eb0d8f13SJaehoon Chung * a command interrupted by HPI 549eb0d8f13SJaehoon Chung */ 550eb0d8f13SJaehoon Chung card->ext_csd.out_of_int_time = 551eb0d8f13SJaehoon Chung ext_csd[EXT_CSD_OUT_OF_INTERRUPT_TIME] * 10; 552eb0d8f13SJaehoon Chung } 553eb0d8f13SJaehoon Chung 554f4c5522bSAndrei Warkentin card->ext_csd.rel_param = ext_csd[EXT_CSD_WR_REL_PARAM]; 555b2499518SAdrian Hunter card->ext_csd.rst_n_function = ext_csd[EXT_CSD_RST_N_FUNCTION]; 556090d25feSLoic Pallardy 557090d25feSLoic Pallardy /* 558090d25feSLoic Pallardy * RPMB regions are defined in multiples of 128K. 559090d25feSLoic Pallardy */ 560090d25feSLoic Pallardy card->ext_csd.raw_rpmb_size_mult = ext_csd[EXT_CSD_RPMB_MULT]; 561d0123ccaSBalaji T K if (ext_csd[EXT_CSD_RPMB_MULT] && mmc_host_cmd23(card->host)) { 562090d25feSLoic Pallardy mmc_part_add(card, ext_csd[EXT_CSD_RPMB_MULT] << 17, 563090d25feSLoic Pallardy EXT_CSD_PART_CONFIG_ACC_RPMB, 564090d25feSLoic Pallardy "rpmb", 0, false, 565090d25feSLoic Pallardy MMC_BLK_DATA_AREA_RPMB); 566090d25feSLoic Pallardy } 567b2499518SAdrian Hunter } 568f4c5522bSAndrei Warkentin 5695238acbeSAndrei Warkentin card->ext_csd.raw_erased_mem_count = ext_csd[EXT_CSD_ERASED_MEM_CONT]; 570dfe86cbaSAdrian Hunter if (ext_csd[EXT_CSD_ERASED_MEM_CONT]) 571dfe86cbaSAdrian Hunter card->erased_byte = 0xFF; 572dfe86cbaSAdrian Hunter else 573dfe86cbaSAdrian Hunter card->erased_byte = 0x0; 574dfe86cbaSAdrian Hunter 575336c716aSSeungwon Jeon /* eMMC v4.5 or later */ 576fe1b5700SUlf Hansson card->ext_csd.generic_cmd6_time = DEFAULT_CMD6_TIMEOUT_MS; 577bec8726aSGirish K S if (card->ext_csd.rev >= 6) { 578336c716aSSeungwon Jeon card->ext_csd.feature_support |= MMC_DISCARD_FEATURE; 579336c716aSSeungwon Jeon 580b23cf0bdSSeungwon Jeon card->ext_csd.generic_cmd6_time = 10 * 581b23cf0bdSSeungwon Jeon ext_csd[EXT_CSD_GENERIC_CMD6_TIME]; 582bec8726aSGirish K S card->ext_csd.power_off_longtime = 10 * 583bec8726aSGirish K S ext_csd[EXT_CSD_POWER_OFF_LONG_TIME]; 584b23cf0bdSSeungwon Jeon 585881d1c25SSeungwon Jeon card->ext_csd.cache_size = 586881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 0] << 0 | 587881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 1] << 8 | 588881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 2] << 16 | 589881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 3] << 24; 5904265900eSSaugata Das 5914265900eSSaugata Das if (ext_csd[EXT_CSD_DATA_SECTOR_SIZE] == 1) 5924265900eSSaugata Das card->ext_csd.data_sector_size = 4096; 5934265900eSSaugata Das else 5944265900eSSaugata Das card->ext_csd.data_sector_size = 512; 5954265900eSSaugata Das 5964265900eSSaugata Das if ((ext_csd[EXT_CSD_DATA_TAG_SUPPORT] & 1) && 5974265900eSSaugata Das (ext_csd[EXT_CSD_TAG_UNIT_SIZE] <= 8)) { 5984265900eSSaugata Das card->ext_csd.data_tag_unit_size = 5994265900eSSaugata Das ((unsigned int) 1 << ext_csd[EXT_CSD_TAG_UNIT_SIZE]) * 6004265900eSSaugata Das (card->ext_csd.data_sector_size); 6014265900eSSaugata Das } else { 6024265900eSSaugata Das card->ext_csd.data_tag_unit_size = 0; 6034265900eSSaugata Das } 604abd9ac14SSeungwon Jeon 605abd9ac14SSeungwon Jeon card->ext_csd.max_packed_writes = 606abd9ac14SSeungwon Jeon ext_csd[EXT_CSD_MAX_PACKED_WRITES]; 607abd9ac14SSeungwon Jeon card->ext_csd.max_packed_reads = 608abd9ac14SSeungwon Jeon ext_csd[EXT_CSD_MAX_PACKED_READS]; 609a5075eb9SSaugata Das } else { 610a5075eb9SSaugata Das card->ext_csd.data_sector_size = 512; 611336c716aSSeungwon Jeon } 612881d1c25SSeungwon Jeon 6130f762426SGwendal Grignou /* eMMC v5 or later */ 6140f762426SGwendal Grignou if (card->ext_csd.rev >= 7) { 6150f762426SGwendal Grignou memcpy(card->ext_csd.fwrev, &ext_csd[EXT_CSD_FIRMWARE_VERSION], 6160f762426SGwendal Grignou MMC_FIRMWARE_LEN); 6170f762426SGwendal Grignou card->ext_csd.ffu_capable = 6180f762426SGwendal Grignou (ext_csd[EXT_CSD_SUPPORTED_MODE] & 0x1) && 6190f762426SGwendal Grignou !(ext_csd[EXT_CSD_FW_CONFIG] & 0x1); 62046bc5c40SJungseung Lee 62146bc5c40SJungseung Lee card->ext_csd.pre_eol_info = ext_csd[EXT_CSD_PRE_EOL_INFO]; 62246bc5c40SJungseung Lee card->ext_csd.device_life_time_est_typ_a = 62346bc5c40SJungseung Lee ext_csd[EXT_CSD_DEVICE_LIFE_TIME_EST_TYP_A]; 62446bc5c40SJungseung Lee card->ext_csd.device_life_time_est_typ_b = 62546bc5c40SJungseung Lee ext_csd[EXT_CSD_DEVICE_LIFE_TIME_EST_TYP_B]; 6260f762426SGwendal Grignou } 627925ff3a7SAdrian Hunter 628925ff3a7SAdrian Hunter /* eMMC v5.1 or later */ 629925ff3a7SAdrian Hunter if (card->ext_csd.rev >= 8) { 630925ff3a7SAdrian Hunter card->ext_csd.cmdq_support = ext_csd[EXT_CSD_CMDQ_SUPPORT] & 631925ff3a7SAdrian Hunter EXT_CSD_CMDQ_SUPPORTED; 632925ff3a7SAdrian Hunter card->ext_csd.cmdq_depth = (ext_csd[EXT_CSD_CMDQ_DEPTH] & 633925ff3a7SAdrian Hunter EXT_CSD_CMDQ_DEPTH_MASK) + 1; 634925ff3a7SAdrian Hunter /* Exclude inefficiently small queue depths */ 635925ff3a7SAdrian Hunter if (card->ext_csd.cmdq_depth <= 2) { 636925ff3a7SAdrian Hunter card->ext_csd.cmdq_support = false; 637925ff3a7SAdrian Hunter card->ext_csd.cmdq_depth = 0; 638925ff3a7SAdrian Hunter } 639925ff3a7SAdrian Hunter if (card->ext_csd.cmdq_support) { 640925ff3a7SAdrian Hunter pr_debug("%s: Command Queue supported depth %u\n", 641925ff3a7SAdrian Hunter mmc_hostname(card->host), 642925ff3a7SAdrian Hunter card->ext_csd.cmdq_depth); 643925ff3a7SAdrian Hunter } 644925ff3a7SAdrian Hunter } 6457ea239d9SPierre Ossman out: 64608ee80ccSPhilip Rakity return err; 64708ee80ccSPhilip Rakity } 6487ea239d9SPierre Ossman 649076ec38aSUlf Hansson static int mmc_read_ext_csd(struct mmc_card *card) 650076ec38aSUlf Hansson { 651c197787cSUlf Hansson u8 *ext_csd; 652076ec38aSUlf Hansson int err; 653076ec38aSUlf Hansson 654c197787cSUlf Hansson if (!mmc_can_ext_csd(card)) 655c197787cSUlf Hansson return 0; 656c197787cSUlf Hansson 657076ec38aSUlf Hansson err = mmc_get_ext_csd(card, &ext_csd); 658c197787cSUlf Hansson if (err) { 659c197787cSUlf Hansson /* If the host or the card can't do the switch, 660c197787cSUlf Hansson * fail more gracefully. */ 661c197787cSUlf Hansson if ((err != -EINVAL) 662c197787cSUlf Hansson && (err != -ENOSYS) 663c197787cSUlf Hansson && (err != -EFAULT)) 664076ec38aSUlf Hansson return err; 665076ec38aSUlf Hansson 666c197787cSUlf Hansson /* 667c197787cSUlf Hansson * High capacity cards should have this "magic" size 668c197787cSUlf Hansson * stored in their CSD. 669c197787cSUlf Hansson */ 670c197787cSUlf Hansson if (card->csd.capacity == (4096 * 512)) { 671c197787cSUlf Hansson pr_err("%s: unable to read EXT_CSD on a possible high capacity card. Card will be ignored.\n", 672c197787cSUlf Hansson mmc_hostname(card->host)); 673c197787cSUlf Hansson } else { 674c197787cSUlf Hansson pr_warn("%s: unable to read EXT_CSD, performance might suffer\n", 675c197787cSUlf Hansson mmc_hostname(card->host)); 676c197787cSUlf Hansson err = 0; 677c197787cSUlf Hansson } 678c197787cSUlf Hansson 679c197787cSUlf Hansson return err; 680c197787cSUlf Hansson } 681c197787cSUlf Hansson 682076ec38aSUlf Hansson err = mmc_decode_ext_csd(card, ext_csd); 683076ec38aSUlf Hansson kfree(ext_csd); 684076ec38aSUlf Hansson return err; 685076ec38aSUlf Hansson } 686076ec38aSUlf Hansson 687f39b2dd9SPhilip Rakity static int mmc_compare_ext_csds(struct mmc_card *card, unsigned bus_width) 68808ee80ccSPhilip Rakity { 68908ee80ccSPhilip Rakity u8 *bw_ext_csd; 69008ee80ccSPhilip Rakity int err; 69108ee80ccSPhilip Rakity 692f39b2dd9SPhilip Rakity if (bus_width == MMC_BUS_WIDTH_1) 693f39b2dd9SPhilip Rakity return 0; 69408ee80ccSPhilip Rakity 695f39b2dd9SPhilip Rakity err = mmc_get_ext_csd(card, &bw_ext_csd); 696c197787cSUlf Hansson if (err) 697c197787cSUlf Hansson return err; 69808ee80ccSPhilip Rakity 69908ee80ccSPhilip Rakity /* only compare read only fields */ 700dd13b4edSJurgen Heeks err = !((card->ext_csd.raw_partition_support == 70108ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_PARTITION_SUPPORT]) && 702f39b2dd9SPhilip Rakity (card->ext_csd.raw_erased_mem_count == 70308ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_ERASED_MEM_CONT]) && 704f39b2dd9SPhilip Rakity (card->ext_csd.rev == 70508ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_REV]) && 706f39b2dd9SPhilip Rakity (card->ext_csd.raw_ext_csd_structure == 70708ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_STRUCTURE]) && 708f39b2dd9SPhilip Rakity (card->ext_csd.raw_card_type == 70908ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_CARD_TYPE]) && 710f39b2dd9SPhilip Rakity (card->ext_csd.raw_s_a_timeout == 71108ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_S_A_TIMEOUT]) && 712f39b2dd9SPhilip Rakity (card->ext_csd.raw_hc_erase_gap_size == 71308ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_HC_WP_GRP_SIZE]) && 714f39b2dd9SPhilip Rakity (card->ext_csd.raw_erase_timeout_mult == 71508ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]) && 716f39b2dd9SPhilip Rakity (card->ext_csd.raw_hc_erase_grp_size == 71708ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]) && 718f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_trim_mult == 71908ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_TRIM_MULT]) && 720f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_erase_mult == 72108ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_ERASE_MULT]) && 722f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_feature_support == 72308ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]) && 724f39b2dd9SPhilip Rakity (card->ext_csd.raw_trim_mult == 72508ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_TRIM_MULT]) && 726f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[0] == 727f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 0]) && 728f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[1] == 729f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 1]) && 730f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[2] == 731f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 2]) && 732f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[3] == 73360443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_SEC_CNT + 3]) && 73460443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_52_195 == 73560443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_52_195]) && 73660443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_26_195 == 73760443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_26_195]) && 73860443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_52_360 == 73960443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_52_360]) && 74060443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_26_360 == 74160443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_26_360]) && 74260443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_200_195 == 74360443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_200_195]) && 74460443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_200_360 == 74560443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_200_360]) && 74660443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_ddr_52_195 == 74760443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_195]) && 74860443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_ddr_52_360 == 7490a5b6438SSeungwon Jeon bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_360]) && 7500a5b6438SSeungwon Jeon (card->ext_csd.raw_pwr_cl_ddr_200_360 == 7510a5b6438SSeungwon Jeon bw_ext_csd[EXT_CSD_PWR_CL_DDR_200_360])); 7520a5b6438SSeungwon Jeon 75308ee80ccSPhilip Rakity if (err) 75408ee80ccSPhilip Rakity err = -EINVAL; 75508ee80ccSPhilip Rakity 75600b41b58SUlf Hansson kfree(bw_ext_csd); 7577ea239d9SPierre Ossman return err; 7587ea239d9SPierre Ossman } 7597ea239d9SPierre Ossman 76051ec92e2SPierre Ossman MMC_DEV_ATTR(cid, "%08x%08x%08x%08x\n", card->raw_cid[0], card->raw_cid[1], 76151ec92e2SPierre Ossman card->raw_cid[2], card->raw_cid[3]); 76251ec92e2SPierre Ossman MMC_DEV_ATTR(csd, "%08x%08x%08x%08x\n", card->raw_csd[0], card->raw_csd[1], 76351ec92e2SPierre Ossman card->raw_csd[2], card->raw_csd[3]); 76451ec92e2SPierre Ossman MMC_DEV_ATTR(date, "%02d/%04d\n", card->cid.month, card->cid.year); 765dfe86cbaSAdrian Hunter MMC_DEV_ATTR(erase_size, "%u\n", card->erase_size << 9); 766dfe86cbaSAdrian Hunter MMC_DEV_ATTR(preferred_erase_size, "%u\n", card->pref_erase << 9); 7670f762426SGwendal Grignou MMC_DEV_ATTR(ffu_capable, "%d\n", card->ext_csd.ffu_capable); 76851ec92e2SPierre Ossman MMC_DEV_ATTR(hwrev, "0x%x\n", card->cid.hwrev); 76951ec92e2SPierre Ossman MMC_DEV_ATTR(manfid, "0x%06x\n", card->cid.manfid); 77051ec92e2SPierre Ossman MMC_DEV_ATTR(name, "%s\n", card->cid.prod_name); 77151ec92e2SPierre Ossman MMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid); 77251e7e8b6SBernie Thompson MMC_DEV_ATTR(prv, "0x%x\n", card->cid.prv); 77346bc5c40SJungseung Lee MMC_DEV_ATTR(pre_eol_info, "%02x\n", card->ext_csd.pre_eol_info); 77446bc5c40SJungseung Lee MMC_DEV_ATTR(life_time, "0x%02x 0x%02x\n", 77546bc5c40SJungseung Lee card->ext_csd.device_life_time_est_typ_a, 77646bc5c40SJungseung Lee card->ext_csd.device_life_time_est_typ_b); 77751ec92e2SPierre Ossman MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial); 778709de99dSChuanxiao Dong MMC_DEV_ATTR(enhanced_area_offset, "%llu\n", 779709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset); 780709de99dSChuanxiao Dong MMC_DEV_ATTR(enhanced_area_size, "%u\n", card->ext_csd.enhanced_area_size); 781188cc042SLoic Pallardy MMC_DEV_ATTR(raw_rpmb_size_mult, "%#x\n", card->ext_csd.raw_rpmb_size_mult); 782188cc042SLoic Pallardy MMC_DEV_ATTR(rel_sectors, "%#x\n", card->ext_csd.rel_sectors); 7835fb06af7SBojan Prtvar MMC_DEV_ATTR(ocr, "%08x\n", card->ocr); 78451ec92e2SPierre Ossman 7850f762426SGwendal Grignou static ssize_t mmc_fwrev_show(struct device *dev, 7860f762426SGwendal Grignou struct device_attribute *attr, 7870f762426SGwendal Grignou char *buf) 7880f762426SGwendal Grignou { 7890f762426SGwendal Grignou struct mmc_card *card = mmc_dev_to_card(dev); 7900f762426SGwendal Grignou 7910f762426SGwendal Grignou if (card->ext_csd.rev < 7) { 7920f762426SGwendal Grignou return sprintf(buf, "0x%x\n", card->cid.fwrev); 7930f762426SGwendal Grignou } else { 7940f762426SGwendal Grignou return sprintf(buf, "0x%*phN\n", MMC_FIRMWARE_LEN, 7950f762426SGwendal Grignou card->ext_csd.fwrev); 7960f762426SGwendal Grignou } 7970f762426SGwendal Grignou } 7980f762426SGwendal Grignou 7990f762426SGwendal Grignou static DEVICE_ATTR(fwrev, S_IRUGO, mmc_fwrev_show, NULL); 8000f762426SGwendal Grignou 8016825a606SBojan Prtvar static ssize_t mmc_dsr_show(struct device *dev, 8026825a606SBojan Prtvar struct device_attribute *attr, 8036825a606SBojan Prtvar char *buf) 8046825a606SBojan Prtvar { 8056825a606SBojan Prtvar struct mmc_card *card = mmc_dev_to_card(dev); 8066825a606SBojan Prtvar struct mmc_host *host = card->host; 8076825a606SBojan Prtvar 8086825a606SBojan Prtvar if (card->csd.dsr_imp && host->dsr_req) 8096825a606SBojan Prtvar return sprintf(buf, "0x%x\n", host->dsr); 8106825a606SBojan Prtvar else 8116825a606SBojan Prtvar /* return default DSR value */ 8126825a606SBojan Prtvar return sprintf(buf, "0x%x\n", 0x404); 8136825a606SBojan Prtvar } 8146825a606SBojan Prtvar 8156825a606SBojan Prtvar static DEVICE_ATTR(dsr, S_IRUGO, mmc_dsr_show, NULL); 8166825a606SBojan Prtvar 81751ec92e2SPierre Ossman static struct attribute *mmc_std_attrs[] = { 81851ec92e2SPierre Ossman &dev_attr_cid.attr, 81951ec92e2SPierre Ossman &dev_attr_csd.attr, 82051ec92e2SPierre Ossman &dev_attr_date.attr, 821dfe86cbaSAdrian Hunter &dev_attr_erase_size.attr, 822dfe86cbaSAdrian Hunter &dev_attr_preferred_erase_size.attr, 82351ec92e2SPierre Ossman &dev_attr_fwrev.attr, 8240f762426SGwendal Grignou &dev_attr_ffu_capable.attr, 82551ec92e2SPierre Ossman &dev_attr_hwrev.attr, 82651ec92e2SPierre Ossman &dev_attr_manfid.attr, 82751ec92e2SPierre Ossman &dev_attr_name.attr, 82851ec92e2SPierre Ossman &dev_attr_oemid.attr, 82951e7e8b6SBernie Thompson &dev_attr_prv.attr, 83046bc5c40SJungseung Lee &dev_attr_pre_eol_info.attr, 83146bc5c40SJungseung Lee &dev_attr_life_time.attr, 83251ec92e2SPierre Ossman &dev_attr_serial.attr, 833709de99dSChuanxiao Dong &dev_attr_enhanced_area_offset.attr, 834709de99dSChuanxiao Dong &dev_attr_enhanced_area_size.attr, 835188cc042SLoic Pallardy &dev_attr_raw_rpmb_size_mult.attr, 836188cc042SLoic Pallardy &dev_attr_rel_sectors.attr, 8375fb06af7SBojan Prtvar &dev_attr_ocr.attr, 8386825a606SBojan Prtvar &dev_attr_dsr.attr, 83951ec92e2SPierre Ossman NULL, 84051ec92e2SPierre Ossman }; 841d1e58212SAxel Lin ATTRIBUTE_GROUPS(mmc_std); 84251ec92e2SPierre Ossman 84351ec92e2SPierre Ossman static struct device_type mmc_type = { 844d1e58212SAxel Lin .groups = mmc_std_groups, 84551ec92e2SPierre Ossman }; 84651ec92e2SPierre Ossman 8477ea239d9SPierre Ossman /* 848b87d8dbfSGirish K S * Select the PowerClass for the current bus width 849b87d8dbfSGirish K S * If power class is defined for 4/8 bit bus in the 850b87d8dbfSGirish K S * extended CSD register, select it by executing the 851b87d8dbfSGirish K S * mmc_switch command. 852b87d8dbfSGirish K S */ 8532385049dSSeungwon Jeon static int __mmc_select_powerclass(struct mmc_card *card, 85460443712SFredrik Soderstedt unsigned int bus_width) 855b87d8dbfSGirish K S { 8562385049dSSeungwon Jeon struct mmc_host *host = card->host; 8572385049dSSeungwon Jeon struct mmc_ext_csd *ext_csd = &card->ext_csd; 85860443712SFredrik Soderstedt unsigned int pwrclass_val = 0; 8592385049dSSeungwon Jeon int err = 0; 860b87d8dbfSGirish K S 861b87d8dbfSGirish K S switch (1 << host->ios.vdd) { 862b87d8dbfSGirish K S case MMC_VDD_165_195: 8632385049dSSeungwon Jeon if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) 8642385049dSSeungwon Jeon pwrclass_val = ext_csd->raw_pwr_cl_26_195; 8652385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR) 86660443712SFredrik Soderstedt pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? 8672385049dSSeungwon Jeon ext_csd->raw_pwr_cl_52_195 : 8682385049dSSeungwon Jeon ext_csd->raw_pwr_cl_ddr_52_195; 8692385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HS200_MAX_DTR) 8702385049dSSeungwon Jeon pwrclass_val = ext_csd->raw_pwr_cl_200_195; 871b87d8dbfSGirish K S break; 87293fc5a47SSubhash Jadavani case MMC_VDD_27_28: 87393fc5a47SSubhash Jadavani case MMC_VDD_28_29: 87493fc5a47SSubhash Jadavani case MMC_VDD_29_30: 87593fc5a47SSubhash Jadavani case MMC_VDD_30_31: 87693fc5a47SSubhash Jadavani case MMC_VDD_31_32: 877b87d8dbfSGirish K S case MMC_VDD_32_33: 878b87d8dbfSGirish K S case MMC_VDD_33_34: 879b87d8dbfSGirish K S case MMC_VDD_34_35: 880b87d8dbfSGirish K S case MMC_VDD_35_36: 8812385049dSSeungwon Jeon if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) 8822385049dSSeungwon Jeon pwrclass_val = ext_csd->raw_pwr_cl_26_360; 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_360 : 8862385049dSSeungwon Jeon ext_csd->raw_pwr_cl_ddr_52_360; 8872385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HS200_MAX_DTR) 8880a5b6438SSeungwon Jeon pwrclass_val = (bus_width == EXT_CSD_DDR_BUS_WIDTH_8) ? 8890a5b6438SSeungwon Jeon ext_csd->raw_pwr_cl_ddr_200_360 : 8900a5b6438SSeungwon Jeon ext_csd->raw_pwr_cl_200_360; 891b87d8dbfSGirish K S break; 892b87d8dbfSGirish K S default: 8936606110dSJoe Perches pr_warn("%s: Voltage range not supported for power class\n", 8946606110dSJoe Perches mmc_hostname(host)); 895b87d8dbfSGirish K S return -EINVAL; 896b87d8dbfSGirish K S } 897b87d8dbfSGirish K S 898b87d8dbfSGirish K S if (bus_width & (EXT_CSD_BUS_WIDTH_8 | EXT_CSD_DDR_BUS_WIDTH_8)) 899b87d8dbfSGirish K S pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_8BIT_MASK) >> 900b87d8dbfSGirish K S EXT_CSD_PWR_CL_8BIT_SHIFT; 901b87d8dbfSGirish K S else 902b87d8dbfSGirish K S pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_4BIT_MASK) >> 903b87d8dbfSGirish K S EXT_CSD_PWR_CL_4BIT_SHIFT; 904b87d8dbfSGirish K S 905b87d8dbfSGirish K S /* If the power class is different from the default value */ 906b87d8dbfSGirish K S if (pwrclass_val > 0) { 907b87d8dbfSGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 908b87d8dbfSGirish K S EXT_CSD_POWER_CLASS, 909b87d8dbfSGirish K S pwrclass_val, 91071fe3eb0SSeungwon Jeon card->ext_csd.generic_cmd6_time); 911b87d8dbfSGirish K S } 912b87d8dbfSGirish K S 913b87d8dbfSGirish K S return err; 914b87d8dbfSGirish K S } 915b87d8dbfSGirish K S 9162385049dSSeungwon Jeon static int mmc_select_powerclass(struct mmc_card *card) 9172385049dSSeungwon Jeon { 9182385049dSSeungwon Jeon struct mmc_host *host = card->host; 9192385049dSSeungwon Jeon u32 bus_width, ext_csd_bits; 9202385049dSSeungwon Jeon int err, ddr; 9212385049dSSeungwon Jeon 9222385049dSSeungwon Jeon /* Power class selection is supported for versions >= 4.0 */ 923148bcab2SUlf Hansson if (!mmc_can_ext_csd(card)) 9242385049dSSeungwon Jeon return 0; 9252385049dSSeungwon Jeon 9262385049dSSeungwon Jeon bus_width = host->ios.bus_width; 9272385049dSSeungwon Jeon /* Power class values are defined only for 4/8 bit bus */ 9282385049dSSeungwon Jeon if (bus_width == MMC_BUS_WIDTH_1) 9292385049dSSeungwon Jeon return 0; 9302385049dSSeungwon Jeon 9312385049dSSeungwon Jeon ddr = card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52; 9322385049dSSeungwon Jeon if (ddr) 9332385049dSSeungwon Jeon ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? 9342385049dSSeungwon Jeon EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; 9352385049dSSeungwon Jeon else 9362385049dSSeungwon Jeon ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? 9372385049dSSeungwon Jeon EXT_CSD_BUS_WIDTH_8 : EXT_CSD_BUS_WIDTH_4; 9382385049dSSeungwon Jeon 9392385049dSSeungwon Jeon err = __mmc_select_powerclass(card, ext_csd_bits); 9402385049dSSeungwon Jeon if (err) 9412385049dSSeungwon Jeon pr_warn("%s: power class selection to bus width %d ddr %d failed\n", 9422385049dSSeungwon Jeon mmc_hostname(host), 1 << bus_width, ddr); 9432385049dSSeungwon Jeon 9442385049dSSeungwon Jeon return err; 9452385049dSSeungwon Jeon } 9462385049dSSeungwon Jeon 947b87d8dbfSGirish K S /* 948577fb131SSeungwon Jeon * Set the bus speed for the selected speed mode. 949a4924c71SGirish K S */ 950577fb131SSeungwon Jeon static void mmc_set_bus_speed(struct mmc_card *card) 951a4924c71SGirish K S { 952577fb131SSeungwon Jeon unsigned int max_dtr = (unsigned int)-1; 953577fb131SSeungwon Jeon 9540a5b6438SSeungwon Jeon if ((mmc_card_hs200(card) || mmc_card_hs400(card)) && 9550a5b6438SSeungwon Jeon max_dtr > card->ext_csd.hs200_max_dtr) 956577fb131SSeungwon Jeon max_dtr = card->ext_csd.hs200_max_dtr; 957577fb131SSeungwon Jeon else if (mmc_card_hs(card) && max_dtr > card->ext_csd.hs_max_dtr) 958577fb131SSeungwon Jeon max_dtr = card->ext_csd.hs_max_dtr; 959577fb131SSeungwon Jeon else if (max_dtr > card->csd.max_dtr) 960577fb131SSeungwon Jeon max_dtr = card->csd.max_dtr; 961577fb131SSeungwon Jeon 962577fb131SSeungwon Jeon mmc_set_clock(card->host, max_dtr); 963577fb131SSeungwon Jeon } 964577fb131SSeungwon Jeon 965577fb131SSeungwon Jeon /* 966577fb131SSeungwon Jeon * Select the bus width amoung 4-bit and 8-bit(SDR). 967577fb131SSeungwon Jeon * If the bus width is changed successfully, return the selected width value. 968577fb131SSeungwon Jeon * Zero is returned instead of error value if the wide width is not supported. 969577fb131SSeungwon Jeon */ 970577fb131SSeungwon Jeon static int mmc_select_bus_width(struct mmc_card *card) 971577fb131SSeungwon Jeon { 972a4924c71SGirish K S static unsigned ext_csd_bits[] = { 973a4924c71SGirish K S EXT_CSD_BUS_WIDTH_8, 974577fb131SSeungwon Jeon EXT_CSD_BUS_WIDTH_4, 975a4924c71SGirish K S }; 976a4924c71SGirish K S static unsigned bus_widths[] = { 977a4924c71SGirish K S MMC_BUS_WIDTH_8, 978577fb131SSeungwon Jeon MMC_BUS_WIDTH_4, 979a4924c71SGirish K S }; 980577fb131SSeungwon Jeon struct mmc_host *host = card->host; 981577fb131SSeungwon Jeon unsigned idx, bus_width = 0; 982577fb131SSeungwon Jeon int err = 0; 983a4924c71SGirish K S 9841c2d26e3SAlexandre Belloni if (!mmc_can_ext_csd(card) || 985577fb131SSeungwon Jeon !(host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) 986577fb131SSeungwon Jeon return 0; 987a4924c71SGirish K S 988577fb131SSeungwon Jeon idx = (host->caps & MMC_CAP_8_BIT_DATA) ? 0 : 1; 989a4924c71SGirish K S 990a4924c71SGirish K S /* 991a4924c71SGirish K S * Unlike SD, MMC cards dont have a configuration register to notify 992a4924c71SGirish K S * supported bus width. So bus test command should be run to identify 993a4924c71SGirish K S * the supported bus width or compare the ext csd values of current 994a4924c71SGirish K S * bus width and ext csd values of 1 bit mode read earlier. 995a4924c71SGirish K S */ 996577fb131SSeungwon Jeon for (; idx < ARRAY_SIZE(bus_widths); idx++) { 997a4924c71SGirish K S /* 998a4924c71SGirish K S * Host is capable of 8bit transfer, then switch 999a4924c71SGirish K S * the device to work in 8bit transfer mode. If the 1000a4924c71SGirish K S * mmc switch command returns error then switch to 1001a4924c71SGirish K S * 4bit transfer mode. On success set the corresponding 1002a4924c71SGirish K S * bus width on the host. 1003a4924c71SGirish K S */ 1004a4924c71SGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1005a4924c71SGirish K S EXT_CSD_BUS_WIDTH, 1006a4924c71SGirish K S ext_csd_bits[idx], 1007a4924c71SGirish K S card->ext_csd.generic_cmd6_time); 1008a4924c71SGirish K S if (err) 1009a4924c71SGirish K S continue; 1010a4924c71SGirish K S 1011577fb131SSeungwon Jeon bus_width = bus_widths[idx]; 1012577fb131SSeungwon Jeon mmc_set_bus_width(host, bus_width); 1013a4924c71SGirish K S 1014577fb131SSeungwon Jeon /* 1015577fb131SSeungwon Jeon * If controller can't handle bus width test, 1016577fb131SSeungwon Jeon * compare ext_csd previously read in 1 bit mode 1017577fb131SSeungwon Jeon * against ext_csd at new bus width 1018577fb131SSeungwon Jeon */ 1019a4924c71SGirish K S if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST)) 1020577fb131SSeungwon Jeon err = mmc_compare_ext_csds(card, bus_width); 1021a4924c71SGirish K S else 1022577fb131SSeungwon Jeon err = mmc_bus_test(card, bus_width); 1023577fb131SSeungwon Jeon 1024577fb131SSeungwon Jeon if (!err) { 1025577fb131SSeungwon Jeon err = bus_width; 1026a4924c71SGirish K S break; 1027577fb131SSeungwon Jeon } else { 1028577fb131SSeungwon Jeon pr_warn("%s: switch to bus width %d failed\n", 1029ed9feec7SWolfram Sang mmc_hostname(host), 1 << bus_width); 1030577fb131SSeungwon Jeon } 1031a4924c71SGirish K S } 1032a4924c71SGirish K S 1033577fb131SSeungwon Jeon return err; 1034577fb131SSeungwon Jeon } 1035577fb131SSeungwon Jeon 1036577fb131SSeungwon Jeon /* 1037577fb131SSeungwon Jeon * Switch to the high-speed mode 1038577fb131SSeungwon Jeon */ 1039577fb131SSeungwon Jeon static int mmc_select_hs(struct mmc_card *card) 1040577fb131SSeungwon Jeon { 1041577fb131SSeungwon Jeon int err; 1042577fb131SSeungwon Jeon 10434509f847SUlf Hansson err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1044577fb131SSeungwon Jeon EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS, 104553e60650SUlf Hansson card->ext_csd.generic_cmd6_time, MMC_TIMING_MMC_HS, 104653e60650SUlf Hansson true, true, true); 104767d35960SJungseung Lee if (err) 104867d35960SJungseung Lee pr_warn("%s: switch to high-speed failed, err:%d\n", 104967d35960SJungseung Lee mmc_hostname(card->host), err); 105067d35960SJungseung Lee 1051577fb131SSeungwon Jeon return err; 1052577fb131SSeungwon Jeon } 1053577fb131SSeungwon Jeon 1054577fb131SSeungwon Jeon /* 1055577fb131SSeungwon Jeon * Activate wide bus and DDR if supported. 1056577fb131SSeungwon Jeon */ 1057577fb131SSeungwon Jeon static int mmc_select_hs_ddr(struct mmc_card *card) 1058577fb131SSeungwon Jeon { 1059577fb131SSeungwon Jeon struct mmc_host *host = card->host; 1060577fb131SSeungwon Jeon u32 bus_width, ext_csd_bits; 1061577fb131SSeungwon Jeon int err = 0; 1062577fb131SSeungwon Jeon 1063577fb131SSeungwon Jeon if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52)) 1064577fb131SSeungwon Jeon return 0; 1065577fb131SSeungwon Jeon 1066577fb131SSeungwon Jeon bus_width = host->ios.bus_width; 1067577fb131SSeungwon Jeon if (bus_width == MMC_BUS_WIDTH_1) 1068577fb131SSeungwon Jeon return 0; 1069577fb131SSeungwon Jeon 1070577fb131SSeungwon Jeon ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? 1071577fb131SSeungwon Jeon EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; 1072577fb131SSeungwon Jeon 1073e173f891SUlf Hansson err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1074577fb131SSeungwon Jeon EXT_CSD_BUS_WIDTH, 1075577fb131SSeungwon Jeon ext_csd_bits, 1076e173f891SUlf Hansson card->ext_csd.generic_cmd6_time, 1077e173f891SUlf Hansson MMC_TIMING_MMC_DDR52, 1078e173f891SUlf Hansson true, true, true); 1079577fb131SSeungwon Jeon if (err) { 10804b75bffcSAndrew Gabbasov pr_err("%s: switch to bus width %d ddr failed\n", 1081577fb131SSeungwon Jeon mmc_hostname(host), 1 << bus_width); 1082577fb131SSeungwon Jeon return err; 1083577fb131SSeungwon Jeon } 1084577fb131SSeungwon Jeon 1085577fb131SSeungwon Jeon /* 1086577fb131SSeungwon Jeon * eMMC cards can support 3.3V to 1.2V i/o (vccq) 1087577fb131SSeungwon Jeon * signaling. 1088577fb131SSeungwon Jeon * 1089577fb131SSeungwon Jeon * EXT_CSD_CARD_TYPE_DDR_1_8V means 3.3V or 1.8V vccq. 1090577fb131SSeungwon Jeon * 1091577fb131SSeungwon Jeon * 1.8V vccq at 3.3V core voltage (vcc) is not required 1092577fb131SSeungwon Jeon * in the JEDEC spec for DDR. 1093577fb131SSeungwon Jeon * 1094312449efSChuanxiao.Dong * Even (e)MMC card can support 3.3v to 1.2v vccq, but not all 1095312449efSChuanxiao.Dong * host controller can support this, like some of the SDHCI 1096312449efSChuanxiao.Dong * controller which connect to an eMMC device. Some of these 1097312449efSChuanxiao.Dong * host controller still needs to use 1.8v vccq for supporting 1098312449efSChuanxiao.Dong * DDR mode. 1099312449efSChuanxiao.Dong * 1100312449efSChuanxiao.Dong * So the sequence will be: 1101312449efSChuanxiao.Dong * if (host and device can both support 1.2v IO) 1102312449efSChuanxiao.Dong * use 1.2v IO; 1103312449efSChuanxiao.Dong * else if (host and device can both support 1.8v IO) 1104312449efSChuanxiao.Dong * use 1.8v IO; 1105312449efSChuanxiao.Dong * so if host and device can only support 3.3v IO, this is the 1106312449efSChuanxiao.Dong * last choice. 1107577fb131SSeungwon Jeon * 1108577fb131SSeungwon Jeon * WARNING: eMMC rules are NOT the same as SD DDR 1109577fb131SSeungwon Jeon */ 1110312449efSChuanxiao.Dong err = -EINVAL; 1111312449efSChuanxiao.Dong if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_2V) 1112312449efSChuanxiao.Dong err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); 1113577fb131SSeungwon Jeon 1114312449efSChuanxiao.Dong if (err && (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_8V)) 1115312449efSChuanxiao.Dong err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); 1116312449efSChuanxiao.Dong 1117312449efSChuanxiao.Dong /* make sure vccq is 3.3v after switching disaster */ 1118312449efSChuanxiao.Dong if (err) 1119312449efSChuanxiao.Dong err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330); 1120312449efSChuanxiao.Dong 1121577fb131SSeungwon Jeon return err; 1122577fb131SSeungwon Jeon } 1123577fb131SSeungwon Jeon 11240a5b6438SSeungwon Jeon static int mmc_select_hs400(struct mmc_card *card) 11250a5b6438SSeungwon Jeon { 11260a5b6438SSeungwon Jeon struct mmc_host *host = card->host; 112751b12f77SAdrian Hunter unsigned int max_dtr; 11280a5b6438SSeungwon Jeon int err = 0; 1129cc4f414cSAdrian Hunter u8 val; 11300a5b6438SSeungwon Jeon 11310a5b6438SSeungwon Jeon /* 11320a5b6438SSeungwon Jeon * HS400 mode requires 8-bit bus width 11330a5b6438SSeungwon Jeon */ 11340a5b6438SSeungwon Jeon if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 && 11350a5b6438SSeungwon Jeon host->ios.bus_width == MMC_BUS_WIDTH_8)) 11360a5b6438SSeungwon Jeon return 0; 11370a5b6438SSeungwon Jeon 113851b12f77SAdrian Hunter /* Switch card to HS mode */ 1139adb24d42SWenkai Du val = EXT_CSD_TIMING_HS; 11400a5b6438SSeungwon Jeon err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1141cc4f414cSAdrian Hunter EXT_CSD_HS_TIMING, val, 1142aa33ce3cSUlf Hansson card->ext_csd.generic_cmd6_time, 0, 114308573eafSChaotian Jing true, false, true); 11440a5b6438SSeungwon Jeon if (err) { 11454b75bffcSAndrew Gabbasov pr_err("%s: switch to high-speed from hs200 failed, err:%d\n", 11460a5b6438SSeungwon Jeon mmc_hostname(host), err); 11470a5b6438SSeungwon Jeon return err; 11480a5b6438SSeungwon Jeon } 11490a5b6438SSeungwon Jeon 115051b12f77SAdrian Hunter /* Set host controller to HS timing */ 115151b12f77SAdrian Hunter mmc_set_timing(card->host, MMC_TIMING_MMC_HS); 115251b12f77SAdrian Hunter 1153649c6059SZiyuan Xu /* Reduce frequency to HS frequency */ 1154649c6059SZiyuan Xu max_dtr = card->ext_csd.hs_max_dtr; 1155649c6059SZiyuan Xu mmc_set_clock(host, max_dtr); 1156649c6059SZiyuan Xu 1157d2302933SAdrian Hunter err = mmc_switch_status(card); 1158d2302933SAdrian Hunter if (err) 1159d2302933SAdrian Hunter goto out_err; 1160d2302933SAdrian Hunter 1161d2302933SAdrian Hunter /* Switch card to DDR */ 11620a5b6438SSeungwon Jeon err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 11630a5b6438SSeungwon Jeon EXT_CSD_BUS_WIDTH, 11640a5b6438SSeungwon Jeon EXT_CSD_DDR_BUS_WIDTH_8, 11650a5b6438SSeungwon Jeon card->ext_csd.generic_cmd6_time); 11660a5b6438SSeungwon Jeon if (err) { 11674b75bffcSAndrew Gabbasov pr_err("%s: switch to bus width for hs400 failed, err:%d\n", 11680a5b6438SSeungwon Jeon mmc_hostname(host), err); 11690a5b6438SSeungwon Jeon return err; 11700a5b6438SSeungwon Jeon } 11710a5b6438SSeungwon Jeon 1172d2302933SAdrian Hunter /* Switch card to HS400 */ 1173cc4f414cSAdrian Hunter val = EXT_CSD_TIMING_HS400 | 1174cc4f414cSAdrian Hunter card->drive_strength << EXT_CSD_DRV_STR_SHIFT; 11750a5b6438SSeungwon Jeon err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1176cc4f414cSAdrian Hunter EXT_CSD_HS_TIMING, val, 1177aa33ce3cSUlf Hansson card->ext_csd.generic_cmd6_time, 0, 117808573eafSChaotian Jing true, false, true); 11790a5b6438SSeungwon Jeon if (err) { 11804b75bffcSAndrew Gabbasov pr_err("%s: switch to hs400 failed, err:%d\n", 11810a5b6438SSeungwon Jeon mmc_hostname(host), err); 11820a5b6438SSeungwon Jeon return err; 11830a5b6438SSeungwon Jeon } 11840a5b6438SSeungwon Jeon 1185d2302933SAdrian Hunter /* Set host controller to HS400 timing and frequency */ 11860a5b6438SSeungwon Jeon mmc_set_timing(host, MMC_TIMING_MMC_HS400); 11870a5b6438SSeungwon Jeon mmc_set_bus_speed(card); 11880a5b6438SSeungwon Jeon 1189d2302933SAdrian Hunter err = mmc_switch_status(card); 1190d2302933SAdrian Hunter if (err) 1191d2302933SAdrian Hunter goto out_err; 1192d2302933SAdrian Hunter 11930a5b6438SSeungwon Jeon return 0; 1194d2302933SAdrian Hunter 1195d2302933SAdrian Hunter out_err: 1196d2302933SAdrian Hunter pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), 1197d2302933SAdrian Hunter __func__, err); 1198d2302933SAdrian Hunter return err; 11990a5b6438SSeungwon Jeon } 12000a5b6438SSeungwon Jeon 12016376f69dSAdrian Hunter int mmc_hs200_to_hs400(struct mmc_card *card) 12026376f69dSAdrian Hunter { 12036376f69dSAdrian Hunter return mmc_select_hs400(card); 12046376f69dSAdrian Hunter } 12056376f69dSAdrian Hunter 12066376f69dSAdrian Hunter int mmc_hs400_to_hs200(struct mmc_card *card) 12076376f69dSAdrian Hunter { 12086376f69dSAdrian Hunter struct mmc_host *host = card->host; 12096376f69dSAdrian Hunter unsigned int max_dtr; 12106376f69dSAdrian Hunter int err; 1211cc4f414cSAdrian Hunter u8 val; 12126376f69dSAdrian Hunter 12136376f69dSAdrian Hunter /* Reduce frequency to HS */ 12146376f69dSAdrian Hunter max_dtr = card->ext_csd.hs_max_dtr; 12156376f69dSAdrian Hunter mmc_set_clock(host, max_dtr); 12166376f69dSAdrian Hunter 12176376f69dSAdrian Hunter /* Switch HS400 to HS DDR */ 1218adb24d42SWenkai Du val = EXT_CSD_TIMING_HS; 12196376f69dSAdrian Hunter err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, 1220aa33ce3cSUlf Hansson val, card->ext_csd.generic_cmd6_time, 0, 122108573eafSChaotian Jing true, false, true); 12226376f69dSAdrian Hunter if (err) 12236376f69dSAdrian Hunter goto out_err; 12246376f69dSAdrian Hunter 12256376f69dSAdrian Hunter mmc_set_timing(host, MMC_TIMING_MMC_DDR52); 12266376f69dSAdrian Hunter 12276376f69dSAdrian Hunter err = mmc_switch_status(card); 12286376f69dSAdrian Hunter if (err) 12296376f69dSAdrian Hunter goto out_err; 12306376f69dSAdrian Hunter 12316376f69dSAdrian Hunter /* Switch HS DDR to HS */ 12326376f69dSAdrian Hunter err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BUS_WIDTH, 12336376f69dSAdrian Hunter EXT_CSD_BUS_WIDTH_8, card->ext_csd.generic_cmd6_time, 1234aa33ce3cSUlf Hansson 0, true, false, true); 12356376f69dSAdrian Hunter if (err) 12366376f69dSAdrian Hunter goto out_err; 12376376f69dSAdrian Hunter 12386376f69dSAdrian Hunter mmc_set_timing(host, MMC_TIMING_MMC_HS); 12396376f69dSAdrian Hunter 12406376f69dSAdrian Hunter err = mmc_switch_status(card); 12416376f69dSAdrian Hunter if (err) 12426376f69dSAdrian Hunter goto out_err; 12436376f69dSAdrian Hunter 12446376f69dSAdrian Hunter /* Switch HS to HS200 */ 1245cc4f414cSAdrian Hunter val = EXT_CSD_TIMING_HS200 | 1246cc4f414cSAdrian Hunter card->drive_strength << EXT_CSD_DRV_STR_SHIFT; 12476376f69dSAdrian Hunter err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, 1248aa33ce3cSUlf Hansson val, card->ext_csd.generic_cmd6_time, 0, 124908573eafSChaotian Jing true, false, true); 12506376f69dSAdrian Hunter if (err) 12516376f69dSAdrian Hunter goto out_err; 12526376f69dSAdrian Hunter 12536376f69dSAdrian Hunter mmc_set_timing(host, MMC_TIMING_MMC_HS200); 12546376f69dSAdrian Hunter 1255ef3d2322SAdrian Hunter /* 1256ef3d2322SAdrian Hunter * For HS200, CRC errors are not a reliable way to know the switch 1257ef3d2322SAdrian Hunter * failed. If there really is a problem, we would expect tuning will 1258ef3d2322SAdrian Hunter * fail and the result ends up the same. 1259ef3d2322SAdrian Hunter */ 1260ef3d2322SAdrian Hunter err = __mmc_switch_status(card, false); 12616376f69dSAdrian Hunter if (err) 12626376f69dSAdrian Hunter goto out_err; 12636376f69dSAdrian Hunter 12646376f69dSAdrian Hunter mmc_set_bus_speed(card); 12656376f69dSAdrian Hunter 12666376f69dSAdrian Hunter return 0; 12676376f69dSAdrian Hunter 12686376f69dSAdrian Hunter out_err: 12696376f69dSAdrian Hunter pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), 12706376f69dSAdrian Hunter __func__, err); 12716376f69dSAdrian Hunter return err; 12726376f69dSAdrian Hunter } 12736376f69dSAdrian Hunter 127481ac2af6SShawn Lin static int mmc_select_hs400es(struct mmc_card *card) 127581ac2af6SShawn Lin { 127681ac2af6SShawn Lin struct mmc_host *host = card->host; 127781ac2af6SShawn Lin int err = 0; 127881ac2af6SShawn Lin u8 val; 127981ac2af6SShawn Lin 128081ac2af6SShawn Lin if (!(host->caps & MMC_CAP_8_BIT_DATA)) { 128181ac2af6SShawn Lin err = -ENOTSUPP; 128281ac2af6SShawn Lin goto out_err; 128381ac2af6SShawn Lin } 128481ac2af6SShawn Lin 12851720d354SShawn Lin if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400_1_2V) 12861720d354SShawn Lin err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); 12871720d354SShawn Lin 12881720d354SShawn Lin if (err && card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400_1_8V) 12891720d354SShawn Lin err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); 12901720d354SShawn Lin 12911720d354SShawn Lin /* If fails try again during next card power cycle */ 12921720d354SShawn Lin if (err) 12931720d354SShawn Lin goto out_err; 12941720d354SShawn Lin 129581ac2af6SShawn Lin err = mmc_select_bus_width(card); 129681ac2af6SShawn Lin if (err < 0) 129781ac2af6SShawn Lin goto out_err; 129881ac2af6SShawn Lin 129981ac2af6SShawn Lin /* Switch card to HS mode */ 130053e60650SUlf Hansson err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 130153e60650SUlf Hansson EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS, 130253e60650SUlf Hansson card->ext_csd.generic_cmd6_time, 0, 130353e60650SUlf Hansson true, false, true); 130453e60650SUlf Hansson if (err) { 130553e60650SUlf Hansson pr_err("%s: switch to hs for hs400es failed, err:%d\n", 130653e60650SUlf Hansson mmc_hostname(host), err); 130753e60650SUlf Hansson goto out_err; 130853e60650SUlf Hansson } 130953e60650SUlf Hansson 131053e60650SUlf Hansson mmc_set_timing(host, MMC_TIMING_MMC_HS); 131153e60650SUlf Hansson err = mmc_switch_status(card); 131267d35960SJungseung Lee if (err) 131381ac2af6SShawn Lin goto out_err; 131481ac2af6SShawn Lin 13154f25580fSShawn Lin mmc_set_clock(host, card->ext_csd.hs_max_dtr); 13164f25580fSShawn Lin 131781ac2af6SShawn Lin /* Switch card to DDR with strobe bit */ 131881ac2af6SShawn Lin val = EXT_CSD_DDR_BUS_WIDTH_8 | EXT_CSD_BUS_WIDTH_STROBE; 131981ac2af6SShawn Lin err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 132081ac2af6SShawn Lin EXT_CSD_BUS_WIDTH, 132181ac2af6SShawn Lin val, 132281ac2af6SShawn Lin card->ext_csd.generic_cmd6_time); 132381ac2af6SShawn Lin if (err) { 132481ac2af6SShawn Lin pr_err("%s: switch to bus width for hs400es failed, err:%d\n", 132581ac2af6SShawn Lin mmc_hostname(host), err); 132681ac2af6SShawn Lin goto out_err; 132781ac2af6SShawn Lin } 132881ac2af6SShawn Lin 132981ac2af6SShawn Lin /* Switch card to HS400 */ 133081ac2af6SShawn Lin val = EXT_CSD_TIMING_HS400 | 133181ac2af6SShawn Lin card->drive_strength << EXT_CSD_DRV_STR_SHIFT; 133281ac2af6SShawn Lin err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 133381ac2af6SShawn Lin EXT_CSD_HS_TIMING, val, 1334aa33ce3cSUlf Hansson card->ext_csd.generic_cmd6_time, 0, 133581ac2af6SShawn Lin true, false, true); 133681ac2af6SShawn Lin if (err) { 133781ac2af6SShawn Lin pr_err("%s: switch to hs400es failed, err:%d\n", 133881ac2af6SShawn Lin mmc_hostname(host), err); 133981ac2af6SShawn Lin goto out_err; 134081ac2af6SShawn Lin } 134181ac2af6SShawn Lin 134281ac2af6SShawn Lin /* Set host controller to HS400 timing and frequency */ 134381ac2af6SShawn Lin mmc_set_timing(host, MMC_TIMING_MMC_HS400); 134481ac2af6SShawn Lin 134581ac2af6SShawn Lin /* Controller enable enhanced strobe function */ 134681ac2af6SShawn Lin host->ios.enhanced_strobe = true; 134781ac2af6SShawn Lin if (host->ops->hs400_enhanced_strobe) 134881ac2af6SShawn Lin host->ops->hs400_enhanced_strobe(host, &host->ios); 134981ac2af6SShawn Lin 135081ac2af6SShawn Lin err = mmc_switch_status(card); 135181ac2af6SShawn Lin if (err) 135281ac2af6SShawn Lin goto out_err; 135381ac2af6SShawn Lin 135481ac2af6SShawn Lin return 0; 135581ac2af6SShawn Lin 135681ac2af6SShawn Lin out_err: 135781ac2af6SShawn Lin pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), 135881ac2af6SShawn Lin __func__, err); 135981ac2af6SShawn Lin return err; 136081ac2af6SShawn Lin } 136181ac2af6SShawn Lin 1362cc4f414cSAdrian Hunter static void mmc_select_driver_type(struct mmc_card *card) 1363cc4f414cSAdrian Hunter { 1364cc4f414cSAdrian Hunter int card_drv_type, drive_strength, drv_type; 1365cc4f414cSAdrian Hunter 1366cc4f414cSAdrian Hunter card_drv_type = card->ext_csd.raw_driver_strength | 1367cc4f414cSAdrian Hunter mmc_driver_type_mask(0); 1368cc4f414cSAdrian Hunter 1369cc4f414cSAdrian Hunter drive_strength = mmc_select_drive_strength(card, 1370cc4f414cSAdrian Hunter card->ext_csd.hs200_max_dtr, 1371cc4f414cSAdrian Hunter card_drv_type, &drv_type); 1372cc4f414cSAdrian Hunter 1373cc4f414cSAdrian Hunter card->drive_strength = drive_strength; 1374cc4f414cSAdrian Hunter 1375cc4f414cSAdrian Hunter if (drv_type) 1376cc4f414cSAdrian Hunter mmc_set_driver_type(card->host, drv_type); 1377cc4f414cSAdrian Hunter } 1378cc4f414cSAdrian Hunter 1379577fb131SSeungwon Jeon /* 1380577fb131SSeungwon Jeon * For device supporting HS200 mode, the following sequence 1381577fb131SSeungwon Jeon * should be done before executing the tuning process. 1382577fb131SSeungwon Jeon * 1. set the desired bus width(4-bit or 8-bit, 1-bit is not supported) 1383577fb131SSeungwon Jeon * 2. switch to HS200 mode 1384577fb131SSeungwon Jeon * 3. set the clock to > 52Mhz and <=200MHz 1385577fb131SSeungwon Jeon */ 1386577fb131SSeungwon Jeon static int mmc_select_hs200(struct mmc_card *card) 1387577fb131SSeungwon Jeon { 1388577fb131SSeungwon Jeon struct mmc_host *host = card->host; 1389e51534c8SDong Aisheng unsigned int old_timing, old_signal_voltage; 1390577fb131SSeungwon Jeon int err = -EINVAL; 1391cc4f414cSAdrian Hunter u8 val; 1392577fb131SSeungwon Jeon 1393e51534c8SDong Aisheng old_signal_voltage = host->ios.signal_voltage; 1394577fb131SSeungwon Jeon if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_2V) 1395577fb131SSeungwon Jeon err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); 1396577fb131SSeungwon Jeon 1397577fb131SSeungwon Jeon if (err && card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_8V) 1398577fb131SSeungwon Jeon err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); 1399577fb131SSeungwon Jeon 1400577fb131SSeungwon Jeon /* If fails try again during next card power cycle */ 1401577fb131SSeungwon Jeon if (err) 1402e51534c8SDong Aisheng return err; 1403577fb131SSeungwon Jeon 1404cc4f414cSAdrian Hunter mmc_select_driver_type(card); 1405cc4f414cSAdrian Hunter 1406577fb131SSeungwon Jeon /* 1407577fb131SSeungwon Jeon * Set the bus width(4 or 8) with host's support and 1408577fb131SSeungwon Jeon * switch to HS200 mode if bus width is set successfully. 1409577fb131SSeungwon Jeon */ 1410577fb131SSeungwon Jeon err = mmc_select_bus_width(card); 14118b7be8f2SPeter Griffin if (err > 0) { 1412cc4f414cSAdrian Hunter val = EXT_CSD_TIMING_HS200 | 1413cc4f414cSAdrian Hunter card->drive_strength << EXT_CSD_DRV_STR_SHIFT; 1414577fb131SSeungwon Jeon err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1415cc4f414cSAdrian Hunter EXT_CSD_HS_TIMING, val, 1416aa33ce3cSUlf Hansson card->ext_csd.generic_cmd6_time, 0, 141708573eafSChaotian Jing true, false, true); 14181815e61bSAdrian Hunter if (err) 14191815e61bSAdrian Hunter goto err; 14201815e61bSAdrian Hunter old_timing = host->ios.timing; 1421577fb131SSeungwon Jeon mmc_set_timing(host, MMC_TIMING_MMC_HS200); 142208573eafSChaotian Jing 1423ef3d2322SAdrian Hunter /* 1424ef3d2322SAdrian Hunter * For HS200, CRC errors are not a reliable way to know the 1425ef3d2322SAdrian Hunter * switch failed. If there really is a problem, we would expect 1426ef3d2322SAdrian Hunter * tuning will fail and the result ends up the same. 1427ef3d2322SAdrian Hunter */ 1428ef3d2322SAdrian Hunter err = __mmc_switch_status(card, false); 1429ef3d2322SAdrian Hunter 14301815e61bSAdrian Hunter /* 14311815e61bSAdrian Hunter * mmc_select_timing() assumes timing has not changed if 14321815e61bSAdrian Hunter * it is a switch error. 14331815e61bSAdrian Hunter */ 14341815e61bSAdrian Hunter if (err == -EBADMSG) 14351815e61bSAdrian Hunter mmc_set_timing(host, old_timing); 14361815e61bSAdrian Hunter } 1437a4924c71SGirish K S err: 1438e51534c8SDong Aisheng if (err) { 1439e51534c8SDong Aisheng /* fall back to the old signal voltage, if fails report error */ 1440e51534c8SDong Aisheng if (__mmc_set_signal_voltage(host, old_signal_voltage)) 1441e51534c8SDong Aisheng err = -EIO; 1442e51534c8SDong Aisheng 14431815e61bSAdrian Hunter pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), 14441815e61bSAdrian Hunter __func__, err); 1445e51534c8SDong Aisheng } 1446a4924c71SGirish K S return err; 1447a4924c71SGirish K S } 1448a4924c71SGirish K S 1449a4924c71SGirish K S /* 145081ac2af6SShawn Lin * Activate High Speed, HS200 or HS400ES mode if supported. 1451577fb131SSeungwon Jeon */ 1452577fb131SSeungwon Jeon static int mmc_select_timing(struct mmc_card *card) 1453577fb131SSeungwon Jeon { 1454577fb131SSeungwon Jeon int err = 0; 1455577fb131SSeungwon Jeon 1456148bcab2SUlf Hansson if (!mmc_can_ext_csd(card)) 1457577fb131SSeungwon Jeon goto bus_speed; 1458577fb131SSeungwon Jeon 145981ac2af6SShawn Lin if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400ES) 146081ac2af6SShawn Lin err = mmc_select_hs400es(card); 146181ac2af6SShawn Lin else if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200) 1462577fb131SSeungwon Jeon err = mmc_select_hs200(card); 1463577fb131SSeungwon Jeon else if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS) 1464577fb131SSeungwon Jeon err = mmc_select_hs(card); 1465577fb131SSeungwon Jeon 1466577fb131SSeungwon Jeon if (err && err != -EBADMSG) 1467577fb131SSeungwon Jeon return err; 1468577fb131SSeungwon Jeon 1469577fb131SSeungwon Jeon bus_speed: 1470577fb131SSeungwon Jeon /* 1471577fb131SSeungwon Jeon * Set the bus speed to the selected bus timing. 1472577fb131SSeungwon Jeon * If timing is not selected, backward compatible is the default. 1473577fb131SSeungwon Jeon */ 1474577fb131SSeungwon Jeon mmc_set_bus_speed(card); 14750400ed0aSDong Aisheng return 0; 1476577fb131SSeungwon Jeon } 1477577fb131SSeungwon Jeon 1478577fb131SSeungwon Jeon /* 1479577fb131SSeungwon Jeon * Execute tuning sequence to seek the proper bus operating 14800a5b6438SSeungwon Jeon * conditions for HS200 and HS400, which sends CMD21 to the device. 1481577fb131SSeungwon Jeon */ 1482577fb131SSeungwon Jeon static int mmc_hs200_tuning(struct mmc_card *card) 1483577fb131SSeungwon Jeon { 1484577fb131SSeungwon Jeon struct mmc_host *host = card->host; 1485577fb131SSeungwon Jeon 14860a5b6438SSeungwon Jeon /* 14870a5b6438SSeungwon Jeon * Timing should be adjusted to the HS400 target 14880a5b6438SSeungwon Jeon * operation frequency for tuning process 14890a5b6438SSeungwon Jeon */ 14900a5b6438SSeungwon Jeon if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 && 14910a5b6438SSeungwon Jeon host->ios.bus_width == MMC_BUS_WIDTH_8) 14920a5b6438SSeungwon Jeon if (host->ops->prepare_hs400_tuning) 14930a5b6438SSeungwon Jeon host->ops->prepare_hs400_tuning(host, &host->ios); 14940a5b6438SSeungwon Jeon 149563e415c6SAdrian Hunter return mmc_execute_tuning(card); 1496577fb131SSeungwon Jeon } 1497577fb131SSeungwon Jeon 1498577fb131SSeungwon Jeon /* 14996abaa0c9SPierre Ossman * Handle the detection and initialisation of a card. 15006abaa0c9SPierre Ossman * 15018769392bSDeepak Saxena * In the case of a resume, "oldcard" will contain the card 15026abaa0c9SPierre Ossman * we're trying to reinitialise. 15037ea239d9SPierre Ossman */ 15048c75deaeSPierre Ossman static int mmc_init_card(struct mmc_host *host, u32 ocr, 15056abaa0c9SPierre Ossman struct mmc_card *oldcard) 15067ea239d9SPierre Ossman { 15077ea239d9SPierre Ossman struct mmc_card *card; 1508577fb131SSeungwon Jeon int err; 15097ea239d9SPierre Ossman u32 cid[4]; 1510b676f039SPhilip Rakity u32 rocr; 15117ea239d9SPierre Ossman 1512d84075c8SPierre Ossman WARN_ON(!host->claimed); 15137ea239d9SPierre Ossman 151444669034SStefan Nilsson XK /* Set correct bus mode for MMC before attempting init */ 151544669034SStefan Nilsson XK if (!mmc_host_is_spi(host)) 151644669034SStefan Nilsson XK mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); 151744669034SStefan Nilsson XK 15187ea239d9SPierre Ossman /* 15197ea239d9SPierre Ossman * Since we're changing the OCR value, we seem to 15207ea239d9SPierre Ossman * need to tell some cards to go back to the idle 15217ea239d9SPierre Ossman * state. We wait 1ms to give cards time to 15227ea239d9SPierre Ossman * respond. 1523c3805467SBalaji T K * mmc_go_idle is needed for eMMC that are asleep 15247ea239d9SPierre Ossman */ 15257ea239d9SPierre Ossman mmc_go_idle(host); 15267ea239d9SPierre Ossman 15277ea239d9SPierre Ossman /* The extra bit indicates that we support high capacity */ 1528b676f039SPhilip Rakity err = mmc_send_op_cond(host, ocr | (1 << 30), &rocr); 152917b0429dSPierre Ossman if (err) 15306abaa0c9SPierre Ossman goto err; 15317ea239d9SPierre Ossman 15327ea239d9SPierre Ossman /* 1533af517150SDavid Brownell * For SPI, enable CRC as appropriate. 1534af517150SDavid Brownell */ 1535af517150SDavid Brownell if (mmc_host_is_spi(host)) { 1536af517150SDavid Brownell err = mmc_spi_set_crc(host, use_spi_crc); 1537af517150SDavid Brownell if (err) 1538af517150SDavid Brownell goto err; 1539af517150SDavid Brownell } 1540af517150SDavid Brownell 1541af517150SDavid Brownell /* 15427ea239d9SPierre Ossman * Fetch CID from card. 15437ea239d9SPierre Ossman */ 1544af517150SDavid Brownell if (mmc_host_is_spi(host)) 1545af517150SDavid Brownell err = mmc_send_cid(host, cid); 1546af517150SDavid Brownell else 15477ea239d9SPierre Ossman err = mmc_all_send_cid(host, cid); 154817b0429dSPierre Ossman if (err) 15497ea239d9SPierre Ossman goto err; 15507ea239d9SPierre Ossman 15516abaa0c9SPierre Ossman if (oldcard) { 1552adf66a0dSPierre Ossman if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) { 1553adf66a0dSPierre Ossman err = -ENOENT; 15546abaa0c9SPierre Ossman goto err; 1555adf66a0dSPierre Ossman } 15566abaa0c9SPierre Ossman 15576abaa0c9SPierre Ossman card = oldcard; 15586abaa0c9SPierre Ossman } else { 15597ea239d9SPierre Ossman /* 15607ea239d9SPierre Ossman * Allocate card structure. 15617ea239d9SPierre Ossman */ 156251ec92e2SPierre Ossman card = mmc_alloc_card(host, &mmc_type); 1563adf66a0dSPierre Ossman if (IS_ERR(card)) { 1564adf66a0dSPierre Ossman err = PTR_ERR(card); 15657ea239d9SPierre Ossman goto err; 1566adf66a0dSPierre Ossman } 15677ea239d9SPierre Ossman 156869041150SUlf Hansson card->ocr = ocr; 15697ea239d9SPierre Ossman card->type = MMC_TYPE_MMC; 15707ea239d9SPierre Ossman card->rca = 1; 15717ea239d9SPierre Ossman memcpy(card->raw_cid, cid, sizeof(card->raw_cid)); 15726abaa0c9SPierre Ossman } 15737ea239d9SPierre Ossman 15747ea239d9SPierre Ossman /* 1575eac86321SDoug Anderson * Call the optional HC's init_card function to handle quirks. 1576eac86321SDoug Anderson */ 1577eac86321SDoug Anderson if (host->ops->init_card) 1578eac86321SDoug Anderson host->ops->init_card(host, card); 1579eac86321SDoug Anderson 1580eac86321SDoug Anderson /* 1581af517150SDavid Brownell * For native busses: set card RCA and quit open drain mode. 15827ea239d9SPierre Ossman */ 1583af517150SDavid Brownell if (!mmc_host_is_spi(host)) { 15847ea239d9SPierre Ossman err = mmc_set_relative_addr(card); 158517b0429dSPierre Ossman if (err) 15867ea239d9SPierre Ossman goto free_card; 15877ea239d9SPierre Ossman 15887ea239d9SPierre Ossman mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL); 1589af517150SDavid Brownell } 15907ea239d9SPierre Ossman 15916abaa0c9SPierre Ossman if (!oldcard) { 15927ea239d9SPierre Ossman /* 15937ea239d9SPierre Ossman * Fetch CSD from card. 15947ea239d9SPierre Ossman */ 15957ea239d9SPierre Ossman err = mmc_send_csd(card, card->raw_csd); 159617b0429dSPierre Ossman if (err) 15977ea239d9SPierre Ossman goto free_card; 15987ea239d9SPierre Ossman 1599bd766312SPierre Ossman err = mmc_decode_csd(card); 1600adf66a0dSPierre Ossman if (err) 1601bd766312SPierre Ossman goto free_card; 1602bd766312SPierre Ossman err = mmc_decode_cid(card); 1603adf66a0dSPierre Ossman if (err) 1604bd766312SPierre Ossman goto free_card; 16056abaa0c9SPierre Ossman } 16067ea239d9SPierre Ossman 16077ea239d9SPierre Ossman /* 16083d705d14SSascha Hauer * handling only for cards supporting DSR and hosts requesting 16093d705d14SSascha Hauer * DSR configuration 16103d705d14SSascha Hauer */ 16113d705d14SSascha Hauer if (card->csd.dsr_imp && host->dsr_req) 16123d705d14SSascha Hauer mmc_set_dsr(host); 16133d705d14SSascha Hauer 16143d705d14SSascha Hauer /* 161589a73cf5SPierre Ossman * Select card, as all following commands rely on that. 16167ea239d9SPierre Ossman */ 1617af517150SDavid Brownell if (!mmc_host_is_spi(host)) { 16187ea239d9SPierre Ossman err = mmc_select_card(card); 161917b0429dSPierre Ossman if (err) 16207ea239d9SPierre Ossman goto free_card; 1621af517150SDavid Brownell } 16227ea239d9SPierre Ossman 16236abaa0c9SPierre Ossman if (!oldcard) { 1624076ec38aSUlf Hansson /* Read extended CSD. */ 1625076ec38aSUlf Hansson err = mmc_read_ext_csd(card); 162617b0429dSPierre Ossman if (err) 16277ea239d9SPierre Ossman goto free_card; 1628b676f039SPhilip Rakity 162987e88659SMasahiro Yamada /* 163087e88659SMasahiro Yamada * If doing byte addressing, check if required to do sector 1631b676f039SPhilip Rakity * addressing. Handle the case of <2GB cards needing sector 1632b676f039SPhilip Rakity * addressing. See section 8.1 JEDEC Standard JED84-A441; 1633b676f039SPhilip Rakity * ocr register has bit 30 set for sector addressing. 1634b676f039SPhilip Rakity */ 163587e88659SMasahiro Yamada if (rocr & BIT(30)) 1636b676f039SPhilip Rakity mmc_card_set_blockaddr(card); 1637b676f039SPhilip Rakity 1638dfe86cbaSAdrian Hunter /* Erase size depends on CSD and Extended CSD */ 1639dfe86cbaSAdrian Hunter mmc_set_erase_size(card); 16406abaa0c9SPierre Ossman } 16417ea239d9SPierre Ossman 16427ea239d9SPierre Ossman /* 1643709de99dSChuanxiao Dong * If enhanced_area_en is TRUE, host needs to enable ERASE_GRP_DEF 1644709de99dSChuanxiao Dong * bit. This bit will be lost every time after a reset or power off. 1645709de99dSChuanxiao Dong */ 164669803d4fSGrégory Soutadé if (card->ext_csd.partition_setting_completed || 164783bb24aaSAdrian Hunter (card->ext_csd.rev >= 3 && (host->caps2 & MMC_CAP2_HC_ERASE_SZ))) { 1648709de99dSChuanxiao Dong err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1649b23cf0bdSSeungwon Jeon EXT_CSD_ERASE_GROUP_DEF, 1, 1650b23cf0bdSSeungwon Jeon card->ext_csd.generic_cmd6_time); 1651709de99dSChuanxiao Dong 1652709de99dSChuanxiao Dong if (err && err != -EBADMSG) 1653709de99dSChuanxiao Dong goto free_card; 1654709de99dSChuanxiao Dong 1655709de99dSChuanxiao Dong if (err) { 1656709de99dSChuanxiao Dong err = 0; 1657709de99dSChuanxiao Dong /* 1658709de99dSChuanxiao Dong * Just disable enhanced area off & sz 1659709de99dSChuanxiao Dong * will try to enable ERASE_GROUP_DEF 1660709de99dSChuanxiao Dong * during next time reinit 1661709de99dSChuanxiao Dong */ 1662709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset = -EINVAL; 1663709de99dSChuanxiao Dong card->ext_csd.enhanced_area_size = -EINVAL; 1664709de99dSChuanxiao Dong } else { 1665709de99dSChuanxiao Dong card->ext_csd.erase_group_def = 1; 1666709de99dSChuanxiao Dong /* 1667709de99dSChuanxiao Dong * enable ERASE_GRP_DEF successfully. 1668709de99dSChuanxiao Dong * This will affect the erase size, so 1669709de99dSChuanxiao Dong * here need to reset erase size 1670709de99dSChuanxiao Dong */ 1671709de99dSChuanxiao Dong mmc_set_erase_size(card); 1672709de99dSChuanxiao Dong } 1673709de99dSChuanxiao Dong } 1674709de99dSChuanxiao Dong 1675709de99dSChuanxiao Dong /* 167641e2a489SPhilip Rakity * Ensure eMMC user default partition is enabled 167741e2a489SPhilip Rakity */ 1678371a689fSAndrei Warkentin if (card->ext_csd.part_config & EXT_CSD_PART_CONFIG_ACC_MASK) { 1679371a689fSAndrei Warkentin card->ext_csd.part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK; 1680371a689fSAndrei Warkentin err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONFIG, 1681371a689fSAndrei Warkentin card->ext_csd.part_config, 1682371a689fSAndrei Warkentin card->ext_csd.part_time); 1683371a689fSAndrei Warkentin if (err && err != -EBADMSG) 1684371a689fSAndrei Warkentin goto free_card; 168541e2a489SPhilip Rakity } 168641e2a489SPhilip Rakity 168741e2a489SPhilip Rakity /* 168843235679SUlf Hansson * Enable power_off_notification byte in the ext_csd register 1689bec8726aSGirish K S */ 169043235679SUlf Hansson if (card->ext_csd.rev >= 6) { 1691bec8726aSGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1692bec8726aSGirish K S EXT_CSD_POWER_OFF_NOTIFICATION, 1693bec8726aSGirish K S EXT_CSD_POWER_ON, 1694bec8726aSGirish K S card->ext_csd.generic_cmd6_time); 1695bec8726aSGirish K S if (err && err != -EBADMSG) 1696bec8726aSGirish K S goto free_card; 1697bec8726aSGirish K S 169896a85d54SGirish K S /* 169996a85d54SGirish K S * The err can be -EBADMSG or 0, 170096a85d54SGirish K S * so check for success and update the flag 170196a85d54SGirish K S */ 1702bec8726aSGirish K S if (!err) 1703e6c08586SUlf Hansson card->ext_csd.power_off_notification = EXT_CSD_POWER_ON; 170496a85d54SGirish K S } 1705bec8726aSGirish K S 1706bec8726aSGirish K S /* 1707577fb131SSeungwon Jeon * Select timing interface 170889a73cf5SPierre Ossman */ 1709577fb131SSeungwon Jeon err = mmc_select_timing(card); 1710577fb131SSeungwon Jeon if (err) 171189a73cf5SPierre Ossman goto free_card; 171289a73cf5SPierre Ossman 1713a4924c71SGirish K S if (mmc_card_hs200(card)) { 1714577fb131SSeungwon Jeon err = mmc_hs200_tuning(card); 17154c4cb171SPhilip Rakity if (err) 17164b75bffcSAndrew Gabbasov goto free_card; 17170a5b6438SSeungwon Jeon 17180a5b6438SSeungwon Jeon err = mmc_select_hs400(card); 17190a5b6438SSeungwon Jeon if (err) 17204b75bffcSAndrew Gabbasov goto free_card; 1721577fb131SSeungwon Jeon } else if (mmc_card_hs(card)) { 1722577fb131SSeungwon Jeon /* Select the desired bus width optionally */ 1723577fb131SSeungwon Jeon err = mmc_select_bus_width(card); 17248b7be8f2SPeter Griffin if (err > 0) { 1725577fb131SSeungwon Jeon err = mmc_select_hs_ddr(card); 1726577fb131SSeungwon Jeon if (err) 17274b75bffcSAndrew Gabbasov goto free_card; 172889a73cf5SPierre Ossman } 1729ef0b27d4SAdrian Hunter } 173089a73cf5SPierre Ossman 1731881d1c25SSeungwon Jeon /* 17322385049dSSeungwon Jeon * Choose the power class with selected bus interface 17332385049dSSeungwon Jeon */ 17342385049dSSeungwon Jeon mmc_select_powerclass(card); 17352385049dSSeungwon Jeon 17362385049dSSeungwon Jeon /* 173752d0974eSSubhash Jadavani * Enable HPI feature (if supported) 173852d0974eSSubhash Jadavani */ 173952d0974eSSubhash Jadavani if (card->ext_csd.hpi) { 174052d0974eSSubhash Jadavani err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 174152d0974eSSubhash Jadavani EXT_CSD_HPI_MGMT, 1, 174252d0974eSSubhash Jadavani card->ext_csd.generic_cmd6_time); 174352d0974eSSubhash Jadavani if (err && err != -EBADMSG) 174452d0974eSSubhash Jadavani goto free_card; 174552d0974eSSubhash Jadavani if (err) { 17466606110dSJoe Perches pr_warn("%s: Enabling HPI failed\n", 174752d0974eSSubhash Jadavani mmc_hostname(card->host)); 174852d0974eSSubhash Jadavani err = 0; 174952d0974eSSubhash Jadavani } else 175052d0974eSSubhash Jadavani card->ext_csd.hpi_en = 1; 175152d0974eSSubhash Jadavani } 175252d0974eSSubhash Jadavani 175352d0974eSSubhash Jadavani /* 1754881d1c25SSeungwon Jeon * If cache size is higher than 0, this indicates 1755881d1c25SSeungwon Jeon * the existence of cache and it can be turned on. 1756881d1c25SSeungwon Jeon */ 17575320226aSPratibhasagar V if (!mmc_card_broken_hpi(card) && 17585320226aSPratibhasagar V card->ext_csd.cache_size > 0) { 1759881d1c25SSeungwon Jeon err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 17608bc0678bSSeungwon Jeon EXT_CSD_CACHE_CTRL, 1, 17618bc0678bSSeungwon Jeon card->ext_csd.generic_cmd6_time); 1762881d1c25SSeungwon Jeon if (err && err != -EBADMSG) 1763881d1c25SSeungwon Jeon goto free_card; 1764881d1c25SSeungwon Jeon 1765881d1c25SSeungwon Jeon /* 1766881d1c25SSeungwon Jeon * Only if no error, cache is turned on successfully. 1767881d1c25SSeungwon Jeon */ 17688bc0678bSSeungwon Jeon if (err) { 17696606110dSJoe Perches pr_warn("%s: Cache is supported, but failed to turn on (%d)\n", 17708bc0678bSSeungwon Jeon mmc_hostname(card->host), err); 17718bc0678bSSeungwon Jeon card->ext_csd.cache_ctrl = 0; 17728bc0678bSSeungwon Jeon err = 0; 17738bc0678bSSeungwon Jeon } else { 17748bc0678bSSeungwon Jeon card->ext_csd.cache_ctrl = 1; 17758bc0678bSSeungwon Jeon } 1776881d1c25SSeungwon Jeon } 1777881d1c25SSeungwon Jeon 1778abd9ac14SSeungwon Jeon /* 1779abd9ac14SSeungwon Jeon * The mandatory minimum values are defined for packed command. 1780abd9ac14SSeungwon Jeon * read: 5, write: 3 1781abd9ac14SSeungwon Jeon */ 1782abd9ac14SSeungwon Jeon if (card->ext_csd.max_packed_writes >= 3 && 1783abd9ac14SSeungwon Jeon card->ext_csd.max_packed_reads >= 5 && 1784abd9ac14SSeungwon Jeon host->caps2 & MMC_CAP2_PACKED_CMD) { 1785abd9ac14SSeungwon Jeon err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1786abd9ac14SSeungwon Jeon EXT_CSD_EXP_EVENTS_CTRL, 1787abd9ac14SSeungwon Jeon EXT_CSD_PACKED_EVENT_EN, 1788abd9ac14SSeungwon Jeon card->ext_csd.generic_cmd6_time); 1789abd9ac14SSeungwon Jeon if (err && err != -EBADMSG) 1790abd9ac14SSeungwon Jeon goto free_card; 1791abd9ac14SSeungwon Jeon if (err) { 1792abd9ac14SSeungwon Jeon pr_warn("%s: Enabling packed event failed\n", 1793abd9ac14SSeungwon Jeon mmc_hostname(card->host)); 1794abd9ac14SSeungwon Jeon card->ext_csd.packed_event_en = 0; 1795abd9ac14SSeungwon Jeon err = 0; 1796abd9ac14SSeungwon Jeon } else { 1797abd9ac14SSeungwon Jeon card->ext_csd.packed_event_en = 1; 1798abd9ac14SSeungwon Jeon } 1799abd9ac14SSeungwon Jeon } 1800abd9ac14SSeungwon Jeon 18016abaa0c9SPierre Ossman if (!oldcard) 18027ea239d9SPierre Ossman host->card = card; 18037ea239d9SPierre Ossman 180417b0429dSPierre Ossman return 0; 18056abaa0c9SPierre Ossman 18066abaa0c9SPierre Ossman free_card: 18076abaa0c9SPierre Ossman if (!oldcard) 18086abaa0c9SPierre Ossman mmc_remove_card(card); 18096abaa0c9SPierre Ossman err: 1810adf66a0dSPierre Ossman return err; 18116abaa0c9SPierre Ossman } 18126abaa0c9SPierre Ossman 181307a68216SUlf Hansson static int mmc_can_sleep(struct mmc_card *card) 181407a68216SUlf Hansson { 181507a68216SUlf Hansson return (card && card->ext_csd.rev >= 3); 181607a68216SUlf Hansson } 181707a68216SUlf Hansson 181807a68216SUlf Hansson static int mmc_sleep(struct mmc_host *host) 181907a68216SUlf Hansson { 182007a68216SUlf Hansson struct mmc_command cmd = {0}; 182107a68216SUlf Hansson struct mmc_card *card = host->card; 1822cb962e04SUlf Hansson unsigned int timeout_ms = DIV_ROUND_UP(card->ext_csd.sa_timeout, 10000); 182307a68216SUlf Hansson int err; 182407a68216SUlf Hansson 1825436f8daaSAdrian Hunter /* Re-tuning can't be done once the card is deselected */ 1826436f8daaSAdrian Hunter mmc_retune_hold(host); 1827436f8daaSAdrian Hunter 182807a68216SUlf Hansson err = mmc_deselect_cards(host); 182907a68216SUlf Hansson if (err) 1830436f8daaSAdrian Hunter goto out_release; 183107a68216SUlf Hansson 183207a68216SUlf Hansson cmd.opcode = MMC_SLEEP_AWAKE; 183307a68216SUlf Hansson cmd.arg = card->rca << 16; 183407a68216SUlf Hansson cmd.arg |= 1 << 15; 183507a68216SUlf Hansson 1836cb962e04SUlf Hansson /* 1837cb962e04SUlf Hansson * If the max_busy_timeout of the host is specified, validate it against 1838cb962e04SUlf Hansson * the sleep cmd timeout. A failure means we need to prevent the host 1839cb962e04SUlf Hansson * from doing hw busy detection, which is done by converting to a R1 1840cb962e04SUlf Hansson * response instead of a R1B. 1841cb962e04SUlf Hansson */ 1842cb962e04SUlf Hansson if (host->max_busy_timeout && (timeout_ms > host->max_busy_timeout)) { 1843cb962e04SUlf Hansson cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; 1844cb962e04SUlf Hansson } else { 184507a68216SUlf Hansson cmd.flags = MMC_RSP_R1B | MMC_CMD_AC; 1846cb962e04SUlf Hansson cmd.busy_timeout = timeout_ms; 1847cb962e04SUlf Hansson } 1848cb962e04SUlf Hansson 184907a68216SUlf Hansson err = mmc_wait_for_cmd(host, &cmd, 0); 185007a68216SUlf Hansson if (err) 1851436f8daaSAdrian Hunter goto out_release; 185207a68216SUlf Hansson 185307a68216SUlf Hansson /* 185407a68216SUlf Hansson * If the host does not wait while the card signals busy, then we will 185507a68216SUlf Hansson * will have to wait the sleep/awake timeout. Note, we cannot use the 185607a68216SUlf Hansson * SEND_STATUS command to poll the status because that command (and most 185707a68216SUlf Hansson * others) is invalid while the card sleeps. 185807a68216SUlf Hansson */ 1859cb962e04SUlf Hansson if (!cmd.busy_timeout || !(host->caps & MMC_CAP_WAIT_WHILE_BUSY)) 1860cb962e04SUlf Hansson mmc_delay(timeout_ms); 186107a68216SUlf Hansson 1862436f8daaSAdrian Hunter out_release: 1863436f8daaSAdrian Hunter mmc_retune_release(host); 186407a68216SUlf Hansson return err; 186507a68216SUlf Hansson } 186607a68216SUlf Hansson 1867e6c08586SUlf Hansson static int mmc_can_poweroff_notify(const struct mmc_card *card) 1868e6c08586SUlf Hansson { 1869e6c08586SUlf Hansson return card && 1870e6c08586SUlf Hansson mmc_card_mmc(card) && 1871e6c08586SUlf Hansson (card->ext_csd.power_off_notification == EXT_CSD_POWER_ON); 1872e6c08586SUlf Hansson } 1873e6c08586SUlf Hansson 1874e6c08586SUlf Hansson static int mmc_poweroff_notify(struct mmc_card *card, unsigned int notify_type) 1875e6c08586SUlf Hansson { 1876e6c08586SUlf Hansson unsigned int timeout = card->ext_csd.generic_cmd6_time; 1877e6c08586SUlf Hansson int err; 1878e6c08586SUlf Hansson 1879e6c08586SUlf Hansson /* Use EXT_CSD_POWER_OFF_SHORT as default notification type. */ 1880e6c08586SUlf Hansson if (notify_type == EXT_CSD_POWER_OFF_LONG) 1881e6c08586SUlf Hansson timeout = card->ext_csd.power_off_longtime; 1882e6c08586SUlf Hansson 1883878e200bSUlf Hansson err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1884e6c08586SUlf Hansson EXT_CSD_POWER_OFF_NOTIFICATION, 1885aa33ce3cSUlf Hansson notify_type, timeout, 0, true, false, false); 1886e6c08586SUlf Hansson if (err) 1887e6c08586SUlf Hansson pr_err("%s: Power Off Notification timed out, %u\n", 1888e6c08586SUlf Hansson mmc_hostname(card->host), timeout); 1889e6c08586SUlf Hansson 1890e6c08586SUlf Hansson /* Disable the power off notification after the switch operation. */ 1891e6c08586SUlf Hansson card->ext_csd.power_off_notification = EXT_CSD_NO_POWER_NOTIFICATION; 1892e6c08586SUlf Hansson 1893e6c08586SUlf Hansson return err; 1894e6c08586SUlf Hansson } 1895e6c08586SUlf Hansson 18966abaa0c9SPierre Ossman /* 18976abaa0c9SPierre Ossman * Host is being removed. Free up the current card. 18986abaa0c9SPierre Ossman */ 18996abaa0c9SPierre Ossman static void mmc_remove(struct mmc_host *host) 19006abaa0c9SPierre Ossman { 19016abaa0c9SPierre Ossman mmc_remove_card(host->card); 19026abaa0c9SPierre Ossman host->card = NULL; 19036abaa0c9SPierre Ossman } 19046abaa0c9SPierre Ossman 19056abaa0c9SPierre Ossman /* 1906d3049504SAdrian Hunter * Card detection - card is alive. 1907d3049504SAdrian Hunter */ 1908d3049504SAdrian Hunter static int mmc_alive(struct mmc_host *host) 1909d3049504SAdrian Hunter { 1910d3049504SAdrian Hunter return mmc_send_status(host->card, NULL); 1911d3049504SAdrian Hunter } 1912d3049504SAdrian Hunter 1913d3049504SAdrian Hunter /* 19146abaa0c9SPierre Ossman * Card detection callback from host. 19156abaa0c9SPierre Ossman */ 19166abaa0c9SPierre Ossman static void mmc_detect(struct mmc_host *host) 19176abaa0c9SPierre Ossman { 19186abaa0c9SPierre Ossman int err; 19196abaa0c9SPierre Ossman 1920e94cfef6SUlf Hansson mmc_get_card(host->card); 19216abaa0c9SPierre Ossman 19226abaa0c9SPierre Ossman /* 19236abaa0c9SPierre Ossman * Just check if our card has been removed. 19246abaa0c9SPierre Ossman */ 1925d3049504SAdrian Hunter err = _mmc_detect_card_removed(host); 19266abaa0c9SPierre Ossman 1927e94cfef6SUlf Hansson mmc_put_card(host->card); 19287ea239d9SPierre Ossman 192917b0429dSPierre Ossman if (err) { 19304101c16aSPierre Ossman mmc_remove(host); 19316abaa0c9SPierre Ossman 19326abaa0c9SPierre Ossman mmc_claim_host(host); 19336abaa0c9SPierre Ossman mmc_detach_bus(host); 19347f7e4129SUlf Hansson mmc_power_off(host); 19356abaa0c9SPierre Ossman mmc_release_host(host); 19366abaa0c9SPierre Ossman } 19376abaa0c9SPierre Ossman } 19386abaa0c9SPierre Ossman 193903d071fcSUlf Hansson static int _mmc_suspend(struct mmc_host *host, bool is_suspend) 19406abaa0c9SPierre Ossman { 1941c3805467SBalaji T K int err = 0; 194203d071fcSUlf Hansson unsigned int notify_type = is_suspend ? EXT_CSD_POWER_OFF_SHORT : 194303d071fcSUlf Hansson EXT_CSD_POWER_OFF_LONG; 1944c3805467SBalaji T K 19456abaa0c9SPierre Ossman mmc_claim_host(host); 1946881d926dSMaya Erez 19479ec775f7SUlf Hansson if (mmc_card_suspended(host->card)) 19489ec775f7SUlf Hansson goto out; 19499ec775f7SUlf Hansson 195039b9431bSUlf Hansson if (mmc_card_doing_bkops(host->card)) { 195139b9431bSUlf Hansson err = mmc_stop_bkops(host->card); 195239b9431bSUlf Hansson if (err) 195339b9431bSUlf Hansson goto out; 195439b9431bSUlf Hansson } 195539b9431bSUlf Hansson 195610e5d965SUlf Hansson err = mmc_flush_cache(host->card); 1957881d926dSMaya Erez if (err) 1958881d926dSMaya Erez goto out; 1959881d926dSMaya Erez 196043235679SUlf Hansson if (mmc_can_poweroff_notify(host->card) && 196153275c21SUlf Hansson ((host->caps2 & MMC_CAP2_FULL_PWR_CYCLE) || !is_suspend)) 196203d071fcSUlf Hansson err = mmc_poweroff_notify(host->card, notify_type); 196307a68216SUlf Hansson else if (mmc_can_sleep(host->card)) 196407a68216SUlf Hansson err = mmc_sleep(host); 1965e6c08586SUlf Hansson else if (!mmc_host_is_spi(host)) 196685e727edSJaehoon Chung err = mmc_deselect_cards(host); 196795cdfb72SNicolas Pitre 19689ec775f7SUlf Hansson if (!err) { 196974590263SUlf Hansson mmc_power_off(host); 19709ec775f7SUlf Hansson mmc_card_set_suspended(host->card); 19719ec775f7SUlf Hansson } 1972881d926dSMaya Erez out: 1973881d926dSMaya Erez mmc_release_host(host); 1974c3805467SBalaji T K return err; 19756abaa0c9SPierre Ossman } 19766abaa0c9SPierre Ossman 19776abaa0c9SPierre Ossman /* 19780cb403a2SUlf Hansson * Suspend callback 197903d071fcSUlf Hansson */ 198003d071fcSUlf Hansson static int mmc_suspend(struct mmc_host *host) 198103d071fcSUlf Hansson { 19820cb403a2SUlf Hansson int err; 19830cb403a2SUlf Hansson 19840cb403a2SUlf Hansson err = _mmc_suspend(host, true); 19850cb403a2SUlf Hansson if (!err) { 19860cb403a2SUlf Hansson pm_runtime_disable(&host->card->dev); 19870cb403a2SUlf Hansson pm_runtime_set_suspended(&host->card->dev); 19880cb403a2SUlf Hansson } 19890cb403a2SUlf Hansson 19900cb403a2SUlf Hansson return err; 199103d071fcSUlf Hansson } 199203d071fcSUlf Hansson 199303d071fcSUlf Hansson /* 19946abaa0c9SPierre Ossman * This function tries to determine if the same card is still present 19956abaa0c9SPierre Ossman * and, if so, restore all state to it. 19966abaa0c9SPierre Ossman */ 19970cb403a2SUlf Hansson static int _mmc_resume(struct mmc_host *host) 19986abaa0c9SPierre Ossman { 19999ec775f7SUlf Hansson int err = 0; 20006abaa0c9SPierre Ossman 20016abaa0c9SPierre Ossman mmc_claim_host(host); 20029ec775f7SUlf Hansson 20039ec775f7SUlf Hansson if (!mmc_card_suspended(host->card)) 20049ec775f7SUlf Hansson goto out; 20059ec775f7SUlf Hansson 200669041150SUlf Hansson mmc_power_up(host, host->card->ocr); 200769041150SUlf Hansson err = mmc_init_card(host, host->card->ocr, host->card); 20089ec775f7SUlf Hansson mmc_card_clr_suspended(host->card); 20092986d0bfSPierre Ossman 20109ec775f7SUlf Hansson out: 20119ec775f7SUlf Hansson mmc_release_host(host); 201295cdfb72SNicolas Pitre return err; 20136abaa0c9SPierre Ossman } 20146abaa0c9SPierre Ossman 20159ec775f7SUlf Hansson /* 20169ec775f7SUlf Hansson * Shutdown callback 20179ec775f7SUlf Hansson */ 20189ec775f7SUlf Hansson static int mmc_shutdown(struct mmc_host *host) 20199ec775f7SUlf Hansson { 20209ec775f7SUlf Hansson int err = 0; 20219ec775f7SUlf Hansson 20229ec775f7SUlf Hansson /* 20239ec775f7SUlf Hansson * In a specific case for poweroff notify, we need to resume the card 20249ec775f7SUlf Hansson * before we can shutdown it properly. 20259ec775f7SUlf Hansson */ 20269ec775f7SUlf Hansson if (mmc_can_poweroff_notify(host->card) && 20279ec775f7SUlf Hansson !(host->caps2 & MMC_CAP2_FULL_PWR_CYCLE)) 20280cb403a2SUlf Hansson err = _mmc_resume(host); 20299ec775f7SUlf Hansson 20309ec775f7SUlf Hansson if (!err) 20319ec775f7SUlf Hansson err = _mmc_suspend(host, false); 20329ec775f7SUlf Hansson 20339ec775f7SUlf Hansson return err; 20349ec775f7SUlf Hansson } 2035c4d770d7SUlf Hansson 2036c4d770d7SUlf Hansson /* 20370cb403a2SUlf Hansson * Callback for resume. 20380cb403a2SUlf Hansson */ 20390cb403a2SUlf Hansson static int mmc_resume(struct mmc_host *host) 20400cb403a2SUlf Hansson { 20410cb403a2SUlf Hansson pm_runtime_enable(&host->card->dev); 2042c29536e8SUlf Hansson return 0; 20430cb403a2SUlf Hansson } 20440cb403a2SUlf Hansson 20450cb403a2SUlf Hansson /* 2046c4d770d7SUlf Hansson * Callback for runtime_suspend. 2047c4d770d7SUlf Hansson */ 2048c4d770d7SUlf Hansson static int mmc_runtime_suspend(struct mmc_host *host) 2049c4d770d7SUlf Hansson { 2050c4d770d7SUlf Hansson int err; 2051c4d770d7SUlf Hansson 2052c4d770d7SUlf Hansson if (!(host->caps & MMC_CAP_AGGRESSIVE_PM)) 2053c4d770d7SUlf Hansson return 0; 2054c4d770d7SUlf Hansson 20550cb403a2SUlf Hansson err = _mmc_suspend(host, true); 20560cc81a8cSUlf Hansson if (err) 2057f42cf8d6SMasanari Iida pr_err("%s: error %d doing aggressive suspend\n", 2058c4d770d7SUlf Hansson mmc_hostname(host), err); 2059c4d770d7SUlf Hansson 2060c4d770d7SUlf Hansson return err; 2061c4d770d7SUlf Hansson } 2062c4d770d7SUlf Hansson 2063c4d770d7SUlf Hansson /* 2064c4d770d7SUlf Hansson * Callback for runtime_resume. 2065c4d770d7SUlf Hansson */ 2066c4d770d7SUlf Hansson static int mmc_runtime_resume(struct mmc_host *host) 2067c4d770d7SUlf Hansson { 2068c4d770d7SUlf Hansson int err; 2069c4d770d7SUlf Hansson 20700cb403a2SUlf Hansson err = _mmc_resume(host); 2071520322d9SAdrian Hunter if (err && err != -ENOMEDIUM) 2072c29536e8SUlf Hansson pr_err("%s: error %d doing runtime resume\n", 2073c4d770d7SUlf Hansson mmc_hostname(host), err); 2074c4d770d7SUlf Hansson 2075c4d770d7SUlf Hansson return 0; 2076c4d770d7SUlf Hansson } 2077c4d770d7SUlf Hansson 2078f855a371SJohan Rudholm int mmc_can_reset(struct mmc_card *card) 2079f855a371SJohan Rudholm { 2080f855a371SJohan Rudholm u8 rst_n_function; 2081f855a371SJohan Rudholm 2082f855a371SJohan Rudholm rst_n_function = card->ext_csd.rst_n_function; 2083f855a371SJohan Rudholm if ((rst_n_function & EXT_CSD_RST_N_EN_MASK) != EXT_CSD_RST_N_ENABLED) 2084f855a371SJohan Rudholm return 0; 2085f855a371SJohan Rudholm return 1; 2086f855a371SJohan Rudholm } 2087f855a371SJohan Rudholm EXPORT_SYMBOL(mmc_can_reset); 2088f855a371SJohan Rudholm 2089f855a371SJohan Rudholm static int mmc_reset(struct mmc_host *host) 2090f855a371SJohan Rudholm { 2091f855a371SJohan Rudholm struct mmc_card *card = host->card; 2092f855a371SJohan Rudholm 2093437db4c6SAdrian Hunter /* 2094437db4c6SAdrian Hunter * In the case of recovery, we can't expect flushing the cache to work 2095437db4c6SAdrian Hunter * always, but we have a go and ignore errors. 2096437db4c6SAdrian Hunter */ 2097437db4c6SAdrian Hunter mmc_flush_cache(host->card); 2098437db4c6SAdrian Hunter 20994e6c7178SGwendal Grignou if ((host->caps & MMC_CAP_HW_RESET) && host->ops->hw_reset && 21004e6c7178SGwendal Grignou mmc_can_reset(card)) { 21014e6c7178SGwendal Grignou /* If the card accept RST_n signal, send it. */ 2102f855a371SJohan Rudholm mmc_set_clock(host, host->f_init); 2103f855a371SJohan Rudholm host->ops->hw_reset(host); 2104f855a371SJohan Rudholm /* Set initial state and call mmc_set_ios */ 2105f855a371SJohan Rudholm mmc_set_initial_state(host); 21064e6c7178SGwendal Grignou } else { 21074e6c7178SGwendal Grignou /* Do a brute force power cycle */ 21084e6c7178SGwendal Grignou mmc_power_cycle(host, card->ocr); 21094e6c7178SGwendal Grignou } 2110364549ddSUlf Hansson return mmc_init_card(host, card->ocr, card); 2111f855a371SJohan Rudholm } 2112f855a371SJohan Rudholm 21139feae246SAdrian Hunter static const struct mmc_bus_ops mmc_ops = { 21149feae246SAdrian Hunter .remove = mmc_remove, 21159feae246SAdrian Hunter .detect = mmc_detect, 21169feae246SAdrian Hunter .suspend = mmc_suspend, 21179feae246SAdrian Hunter .resume = mmc_resume, 2118c4d770d7SUlf Hansson .runtime_suspend = mmc_runtime_suspend, 2119c4d770d7SUlf Hansson .runtime_resume = mmc_runtime_resume, 2120d3049504SAdrian Hunter .alive = mmc_alive, 2121486fdbbcSUlf Hansson .shutdown = mmc_shutdown, 2122f855a371SJohan Rudholm .reset = mmc_reset, 21239feae246SAdrian Hunter }; 21249feae246SAdrian Hunter 21256abaa0c9SPierre Ossman /* 21266abaa0c9SPierre Ossman * Starting point for MMC card init. 21276abaa0c9SPierre Ossman */ 2128807e8e40SAndy Ross int mmc_attach_mmc(struct mmc_host *host) 21296abaa0c9SPierre Ossman { 21306abaa0c9SPierre Ossman int err; 213169041150SUlf Hansson u32 ocr, rocr; 21326abaa0c9SPierre Ossman 2133d84075c8SPierre Ossman WARN_ON(!host->claimed); 21346abaa0c9SPierre Ossman 213544669034SStefan Nilsson XK /* Set correct bus mode for MMC before attempting attach */ 213644669034SStefan Nilsson XK if (!mmc_host_is_spi(host)) 213744669034SStefan Nilsson XK mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); 213844669034SStefan Nilsson XK 2139807e8e40SAndy Ross err = mmc_send_op_cond(host, 0, &ocr); 2140807e8e40SAndy Ross if (err) 2141807e8e40SAndy Ross return err; 2142807e8e40SAndy Ross 21432501c917SUlf Hansson mmc_attach_bus(host, &mmc_ops); 21448f230f45STakashi Iwai if (host->ocr_avail_mmc) 21458f230f45STakashi Iwai host->ocr_avail = host->ocr_avail_mmc; 21466abaa0c9SPierre Ossman 21476abaa0c9SPierre Ossman /* 2148af517150SDavid Brownell * We need to get OCR a different way for SPI. 2149af517150SDavid Brownell */ 2150af517150SDavid Brownell if (mmc_host_is_spi(host)) { 2151af517150SDavid Brownell err = mmc_spi_read_ocr(host, 1, &ocr); 2152af517150SDavid Brownell if (err) 2153af517150SDavid Brownell goto err; 2154af517150SDavid Brownell } 2155af517150SDavid Brownell 215669041150SUlf Hansson rocr = mmc_select_voltage(host, ocr); 21576abaa0c9SPierre Ossman 21586abaa0c9SPierre Ossman /* 21596abaa0c9SPierre Ossman * Can we support the voltage of the card? 21606abaa0c9SPierre Ossman */ 216169041150SUlf Hansson if (!rocr) { 2162109b5bedSPierre Ossman err = -EINVAL; 21636abaa0c9SPierre Ossman goto err; 2164109b5bedSPierre Ossman } 21656abaa0c9SPierre Ossman 21666abaa0c9SPierre Ossman /* 21676abaa0c9SPierre Ossman * Detect and init the card. 21686abaa0c9SPierre Ossman */ 216969041150SUlf Hansson err = mmc_init_card(host, rocr, NULL); 217017b0429dSPierre Ossman if (err) 21716abaa0c9SPierre Ossman goto err; 21726abaa0c9SPierre Ossman 21736abaa0c9SPierre Ossman mmc_release_host(host); 21744101c16aSPierre Ossman err = mmc_add_card(host->card); 21757ea239d9SPierre Ossman if (err) 21762986d0bfSPierre Ossman goto remove_card; 21777ea239d9SPierre Ossman 21782860d060SSergei Shtylyov mmc_claim_host(host); 21797ea239d9SPierre Ossman return 0; 21807ea239d9SPierre Ossman 21812986d0bfSPierre Ossman remove_card: 21826abaa0c9SPierre Ossman mmc_remove_card(host->card); 21832986d0bfSPierre Ossman mmc_claim_host(host); 2184807e8e40SAndy Ross host->card = NULL; 21857ea239d9SPierre Ossman err: 21867ea239d9SPierre Ossman mmc_detach_bus(host); 21877ea239d9SPierre Ossman 2188a3c76eb9SGirish K S pr_err("%s: error %d whilst initialising MMC card\n", 2189109b5bedSPierre Ossman mmc_hostname(host), err); 2190109b5bedSPierre Ossman 2191adf66a0dSPierre Ossman return err; 21927ea239d9SPierre Ossman } 2193