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); 6200f762426SGwendal Grignou } 621925ff3a7SAdrian Hunter 622925ff3a7SAdrian Hunter /* eMMC v5.1 or later */ 623925ff3a7SAdrian Hunter if (card->ext_csd.rev >= 8) { 624925ff3a7SAdrian Hunter card->ext_csd.cmdq_support = ext_csd[EXT_CSD_CMDQ_SUPPORT] & 625925ff3a7SAdrian Hunter EXT_CSD_CMDQ_SUPPORTED; 626925ff3a7SAdrian Hunter card->ext_csd.cmdq_depth = (ext_csd[EXT_CSD_CMDQ_DEPTH] & 627925ff3a7SAdrian Hunter EXT_CSD_CMDQ_DEPTH_MASK) + 1; 628925ff3a7SAdrian Hunter /* Exclude inefficiently small queue depths */ 629925ff3a7SAdrian Hunter if (card->ext_csd.cmdq_depth <= 2) { 630925ff3a7SAdrian Hunter card->ext_csd.cmdq_support = false; 631925ff3a7SAdrian Hunter card->ext_csd.cmdq_depth = 0; 632925ff3a7SAdrian Hunter } 633925ff3a7SAdrian Hunter if (card->ext_csd.cmdq_support) { 634925ff3a7SAdrian Hunter pr_debug("%s: Command Queue supported depth %u\n", 635925ff3a7SAdrian Hunter mmc_hostname(card->host), 636925ff3a7SAdrian Hunter card->ext_csd.cmdq_depth); 637925ff3a7SAdrian Hunter } 638925ff3a7SAdrian Hunter } 6397ea239d9SPierre Ossman out: 64008ee80ccSPhilip Rakity return err; 64108ee80ccSPhilip Rakity } 6427ea239d9SPierre Ossman 643076ec38aSUlf Hansson static int mmc_read_ext_csd(struct mmc_card *card) 644076ec38aSUlf Hansson { 645c197787cSUlf Hansson u8 *ext_csd; 646076ec38aSUlf Hansson int err; 647076ec38aSUlf Hansson 648c197787cSUlf Hansson if (!mmc_can_ext_csd(card)) 649c197787cSUlf Hansson return 0; 650c197787cSUlf Hansson 651076ec38aSUlf Hansson err = mmc_get_ext_csd(card, &ext_csd); 652c197787cSUlf Hansson if (err) { 653c197787cSUlf Hansson /* If the host or the card can't do the switch, 654c197787cSUlf Hansson * fail more gracefully. */ 655c197787cSUlf Hansson if ((err != -EINVAL) 656c197787cSUlf Hansson && (err != -ENOSYS) 657c197787cSUlf Hansson && (err != -EFAULT)) 658076ec38aSUlf Hansson return err; 659076ec38aSUlf Hansson 660c197787cSUlf Hansson /* 661c197787cSUlf Hansson * High capacity cards should have this "magic" size 662c197787cSUlf Hansson * stored in their CSD. 663c197787cSUlf Hansson */ 664c197787cSUlf Hansson if (card->csd.capacity == (4096 * 512)) { 665c197787cSUlf Hansson pr_err("%s: unable to read EXT_CSD on a possible high capacity card. Card will be ignored.\n", 666c197787cSUlf Hansson mmc_hostname(card->host)); 667c197787cSUlf Hansson } else { 668c197787cSUlf Hansson pr_warn("%s: unable to read EXT_CSD, performance might suffer\n", 669c197787cSUlf Hansson mmc_hostname(card->host)); 670c197787cSUlf Hansson err = 0; 671c197787cSUlf Hansson } 672c197787cSUlf Hansson 673c197787cSUlf Hansson return err; 674c197787cSUlf Hansson } 675c197787cSUlf Hansson 676076ec38aSUlf Hansson err = mmc_decode_ext_csd(card, ext_csd); 677076ec38aSUlf Hansson kfree(ext_csd); 678076ec38aSUlf Hansson return err; 679076ec38aSUlf Hansson } 680076ec38aSUlf Hansson 681f39b2dd9SPhilip Rakity static int mmc_compare_ext_csds(struct mmc_card *card, unsigned bus_width) 68208ee80ccSPhilip Rakity { 68308ee80ccSPhilip Rakity u8 *bw_ext_csd; 68408ee80ccSPhilip Rakity int err; 68508ee80ccSPhilip Rakity 686f39b2dd9SPhilip Rakity if (bus_width == MMC_BUS_WIDTH_1) 687f39b2dd9SPhilip Rakity return 0; 68808ee80ccSPhilip Rakity 689f39b2dd9SPhilip Rakity err = mmc_get_ext_csd(card, &bw_ext_csd); 690c197787cSUlf Hansson if (err) 691c197787cSUlf Hansson return err; 69208ee80ccSPhilip Rakity 69308ee80ccSPhilip Rakity /* only compare read only fields */ 694dd13b4edSJurgen Heeks err = !((card->ext_csd.raw_partition_support == 69508ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_PARTITION_SUPPORT]) && 696f39b2dd9SPhilip Rakity (card->ext_csd.raw_erased_mem_count == 69708ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_ERASED_MEM_CONT]) && 698f39b2dd9SPhilip Rakity (card->ext_csd.rev == 69908ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_REV]) && 700f39b2dd9SPhilip Rakity (card->ext_csd.raw_ext_csd_structure == 70108ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_STRUCTURE]) && 702f39b2dd9SPhilip Rakity (card->ext_csd.raw_card_type == 70308ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_CARD_TYPE]) && 704f39b2dd9SPhilip Rakity (card->ext_csd.raw_s_a_timeout == 70508ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_S_A_TIMEOUT]) && 706f39b2dd9SPhilip Rakity (card->ext_csd.raw_hc_erase_gap_size == 70708ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_HC_WP_GRP_SIZE]) && 708f39b2dd9SPhilip Rakity (card->ext_csd.raw_erase_timeout_mult == 70908ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]) && 710f39b2dd9SPhilip Rakity (card->ext_csd.raw_hc_erase_grp_size == 71108ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]) && 712f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_trim_mult == 71308ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_TRIM_MULT]) && 714f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_erase_mult == 71508ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_ERASE_MULT]) && 716f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_feature_support == 71708ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]) && 718f39b2dd9SPhilip Rakity (card->ext_csd.raw_trim_mult == 71908ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_TRIM_MULT]) && 720f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[0] == 721f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 0]) && 722f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[1] == 723f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 1]) && 724f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[2] == 725f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 2]) && 726f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[3] == 72760443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_SEC_CNT + 3]) && 72860443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_52_195 == 72960443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_52_195]) && 73060443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_26_195 == 73160443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_26_195]) && 73260443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_52_360 == 73360443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_52_360]) && 73460443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_26_360 == 73560443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_26_360]) && 73660443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_200_195 == 73760443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_200_195]) && 73860443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_200_360 == 73960443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_200_360]) && 74060443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_ddr_52_195 == 74160443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_195]) && 74260443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_ddr_52_360 == 7430a5b6438SSeungwon Jeon bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_360]) && 7440a5b6438SSeungwon Jeon (card->ext_csd.raw_pwr_cl_ddr_200_360 == 7450a5b6438SSeungwon Jeon bw_ext_csd[EXT_CSD_PWR_CL_DDR_200_360])); 7460a5b6438SSeungwon Jeon 74708ee80ccSPhilip Rakity if (err) 74808ee80ccSPhilip Rakity err = -EINVAL; 74908ee80ccSPhilip Rakity 75000b41b58SUlf Hansson kfree(bw_ext_csd); 7517ea239d9SPierre Ossman return err; 7527ea239d9SPierre Ossman } 7537ea239d9SPierre Ossman 75451ec92e2SPierre Ossman MMC_DEV_ATTR(cid, "%08x%08x%08x%08x\n", card->raw_cid[0], card->raw_cid[1], 75551ec92e2SPierre Ossman card->raw_cid[2], card->raw_cid[3]); 75651ec92e2SPierre Ossman MMC_DEV_ATTR(csd, "%08x%08x%08x%08x\n", card->raw_csd[0], card->raw_csd[1], 75751ec92e2SPierre Ossman card->raw_csd[2], card->raw_csd[3]); 75851ec92e2SPierre Ossman MMC_DEV_ATTR(date, "%02d/%04d\n", card->cid.month, card->cid.year); 759dfe86cbaSAdrian Hunter MMC_DEV_ATTR(erase_size, "%u\n", card->erase_size << 9); 760dfe86cbaSAdrian Hunter MMC_DEV_ATTR(preferred_erase_size, "%u\n", card->pref_erase << 9); 7610f762426SGwendal Grignou MMC_DEV_ATTR(ffu_capable, "%d\n", card->ext_csd.ffu_capable); 76251ec92e2SPierre Ossman MMC_DEV_ATTR(hwrev, "0x%x\n", card->cid.hwrev); 76351ec92e2SPierre Ossman MMC_DEV_ATTR(manfid, "0x%06x\n", card->cid.manfid); 76451ec92e2SPierre Ossman MMC_DEV_ATTR(name, "%s\n", card->cid.prod_name); 76551ec92e2SPierre Ossman MMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid); 76651e7e8b6SBernie Thompson MMC_DEV_ATTR(prv, "0x%x\n", card->cid.prv); 76751ec92e2SPierre Ossman MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial); 768709de99dSChuanxiao Dong MMC_DEV_ATTR(enhanced_area_offset, "%llu\n", 769709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset); 770709de99dSChuanxiao Dong MMC_DEV_ATTR(enhanced_area_size, "%u\n", card->ext_csd.enhanced_area_size); 771188cc042SLoic Pallardy MMC_DEV_ATTR(raw_rpmb_size_mult, "%#x\n", card->ext_csd.raw_rpmb_size_mult); 772188cc042SLoic Pallardy MMC_DEV_ATTR(rel_sectors, "%#x\n", card->ext_csd.rel_sectors); 7735fb06af7SBojan Prtvar MMC_DEV_ATTR(ocr, "%08x\n", card->ocr); 77451ec92e2SPierre Ossman 7750f762426SGwendal Grignou static ssize_t mmc_fwrev_show(struct device *dev, 7760f762426SGwendal Grignou struct device_attribute *attr, 7770f762426SGwendal Grignou char *buf) 7780f762426SGwendal Grignou { 7790f762426SGwendal Grignou struct mmc_card *card = mmc_dev_to_card(dev); 7800f762426SGwendal Grignou 7810f762426SGwendal Grignou if (card->ext_csd.rev < 7) { 7820f762426SGwendal Grignou return sprintf(buf, "0x%x\n", card->cid.fwrev); 7830f762426SGwendal Grignou } else { 7840f762426SGwendal Grignou return sprintf(buf, "0x%*phN\n", MMC_FIRMWARE_LEN, 7850f762426SGwendal Grignou card->ext_csd.fwrev); 7860f762426SGwendal Grignou } 7870f762426SGwendal Grignou } 7880f762426SGwendal Grignou 7890f762426SGwendal Grignou static DEVICE_ATTR(fwrev, S_IRUGO, mmc_fwrev_show, NULL); 7900f762426SGwendal Grignou 7916825a606SBojan Prtvar static ssize_t mmc_dsr_show(struct device *dev, 7926825a606SBojan Prtvar struct device_attribute *attr, 7936825a606SBojan Prtvar char *buf) 7946825a606SBojan Prtvar { 7956825a606SBojan Prtvar struct mmc_card *card = mmc_dev_to_card(dev); 7966825a606SBojan Prtvar struct mmc_host *host = card->host; 7976825a606SBojan Prtvar 7986825a606SBojan Prtvar if (card->csd.dsr_imp && host->dsr_req) 7996825a606SBojan Prtvar return sprintf(buf, "0x%x\n", host->dsr); 8006825a606SBojan Prtvar else 8016825a606SBojan Prtvar /* return default DSR value */ 8026825a606SBojan Prtvar return sprintf(buf, "0x%x\n", 0x404); 8036825a606SBojan Prtvar } 8046825a606SBojan Prtvar 8056825a606SBojan Prtvar static DEVICE_ATTR(dsr, S_IRUGO, mmc_dsr_show, NULL); 8066825a606SBojan Prtvar 80751ec92e2SPierre Ossman static struct attribute *mmc_std_attrs[] = { 80851ec92e2SPierre Ossman &dev_attr_cid.attr, 80951ec92e2SPierre Ossman &dev_attr_csd.attr, 81051ec92e2SPierre Ossman &dev_attr_date.attr, 811dfe86cbaSAdrian Hunter &dev_attr_erase_size.attr, 812dfe86cbaSAdrian Hunter &dev_attr_preferred_erase_size.attr, 81351ec92e2SPierre Ossman &dev_attr_fwrev.attr, 8140f762426SGwendal Grignou &dev_attr_ffu_capable.attr, 81551ec92e2SPierre Ossman &dev_attr_hwrev.attr, 81651ec92e2SPierre Ossman &dev_attr_manfid.attr, 81751ec92e2SPierre Ossman &dev_attr_name.attr, 81851ec92e2SPierre Ossman &dev_attr_oemid.attr, 81951e7e8b6SBernie Thompson &dev_attr_prv.attr, 82051ec92e2SPierre Ossman &dev_attr_serial.attr, 821709de99dSChuanxiao Dong &dev_attr_enhanced_area_offset.attr, 822709de99dSChuanxiao Dong &dev_attr_enhanced_area_size.attr, 823188cc042SLoic Pallardy &dev_attr_raw_rpmb_size_mult.attr, 824188cc042SLoic Pallardy &dev_attr_rel_sectors.attr, 8255fb06af7SBojan Prtvar &dev_attr_ocr.attr, 8266825a606SBojan Prtvar &dev_attr_dsr.attr, 82751ec92e2SPierre Ossman NULL, 82851ec92e2SPierre Ossman }; 829d1e58212SAxel Lin ATTRIBUTE_GROUPS(mmc_std); 83051ec92e2SPierre Ossman 83151ec92e2SPierre Ossman static struct device_type mmc_type = { 832d1e58212SAxel Lin .groups = mmc_std_groups, 83351ec92e2SPierre Ossman }; 83451ec92e2SPierre Ossman 8357ea239d9SPierre Ossman /* 836b87d8dbfSGirish K S * Select the PowerClass for the current bus width 837b87d8dbfSGirish K S * If power class is defined for 4/8 bit bus in the 838b87d8dbfSGirish K S * extended CSD register, select it by executing the 839b87d8dbfSGirish K S * mmc_switch command. 840b87d8dbfSGirish K S */ 8412385049dSSeungwon Jeon static int __mmc_select_powerclass(struct mmc_card *card, 84260443712SFredrik Soderstedt unsigned int bus_width) 843b87d8dbfSGirish K S { 8442385049dSSeungwon Jeon struct mmc_host *host = card->host; 8452385049dSSeungwon Jeon struct mmc_ext_csd *ext_csd = &card->ext_csd; 84660443712SFredrik Soderstedt unsigned int pwrclass_val = 0; 8472385049dSSeungwon Jeon int err = 0; 848b87d8dbfSGirish K S 849b87d8dbfSGirish K S switch (1 << host->ios.vdd) { 850b87d8dbfSGirish K S case MMC_VDD_165_195: 8512385049dSSeungwon Jeon if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) 8522385049dSSeungwon Jeon pwrclass_val = ext_csd->raw_pwr_cl_26_195; 8532385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR) 85460443712SFredrik Soderstedt pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? 8552385049dSSeungwon Jeon ext_csd->raw_pwr_cl_52_195 : 8562385049dSSeungwon Jeon ext_csd->raw_pwr_cl_ddr_52_195; 8572385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HS200_MAX_DTR) 8582385049dSSeungwon Jeon pwrclass_val = ext_csd->raw_pwr_cl_200_195; 859b87d8dbfSGirish K S break; 86093fc5a47SSubhash Jadavani case MMC_VDD_27_28: 86193fc5a47SSubhash Jadavani case MMC_VDD_28_29: 86293fc5a47SSubhash Jadavani case MMC_VDD_29_30: 86393fc5a47SSubhash Jadavani case MMC_VDD_30_31: 86493fc5a47SSubhash Jadavani case MMC_VDD_31_32: 865b87d8dbfSGirish K S case MMC_VDD_32_33: 866b87d8dbfSGirish K S case MMC_VDD_33_34: 867b87d8dbfSGirish K S case MMC_VDD_34_35: 868b87d8dbfSGirish K S case MMC_VDD_35_36: 8692385049dSSeungwon Jeon if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) 8702385049dSSeungwon Jeon pwrclass_val = ext_csd->raw_pwr_cl_26_360; 8712385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR) 87260443712SFredrik Soderstedt pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? 8732385049dSSeungwon Jeon ext_csd->raw_pwr_cl_52_360 : 8742385049dSSeungwon Jeon ext_csd->raw_pwr_cl_ddr_52_360; 8752385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HS200_MAX_DTR) 8760a5b6438SSeungwon Jeon pwrclass_val = (bus_width == EXT_CSD_DDR_BUS_WIDTH_8) ? 8770a5b6438SSeungwon Jeon ext_csd->raw_pwr_cl_ddr_200_360 : 8780a5b6438SSeungwon Jeon ext_csd->raw_pwr_cl_200_360; 879b87d8dbfSGirish K S break; 880b87d8dbfSGirish K S default: 8816606110dSJoe Perches pr_warn("%s: Voltage range not supported for power class\n", 8826606110dSJoe Perches mmc_hostname(host)); 883b87d8dbfSGirish K S return -EINVAL; 884b87d8dbfSGirish K S } 885b87d8dbfSGirish K S 886b87d8dbfSGirish K S if (bus_width & (EXT_CSD_BUS_WIDTH_8 | EXT_CSD_DDR_BUS_WIDTH_8)) 887b87d8dbfSGirish K S pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_8BIT_MASK) >> 888b87d8dbfSGirish K S EXT_CSD_PWR_CL_8BIT_SHIFT; 889b87d8dbfSGirish K S else 890b87d8dbfSGirish K S pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_4BIT_MASK) >> 891b87d8dbfSGirish K S EXT_CSD_PWR_CL_4BIT_SHIFT; 892b87d8dbfSGirish K S 893b87d8dbfSGirish K S /* If the power class is different from the default value */ 894b87d8dbfSGirish K S if (pwrclass_val > 0) { 895b87d8dbfSGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 896b87d8dbfSGirish K S EXT_CSD_POWER_CLASS, 897b87d8dbfSGirish K S pwrclass_val, 89871fe3eb0SSeungwon Jeon card->ext_csd.generic_cmd6_time); 899b87d8dbfSGirish K S } 900b87d8dbfSGirish K S 901b87d8dbfSGirish K S return err; 902b87d8dbfSGirish K S } 903b87d8dbfSGirish K S 9042385049dSSeungwon Jeon static int mmc_select_powerclass(struct mmc_card *card) 9052385049dSSeungwon Jeon { 9062385049dSSeungwon Jeon struct mmc_host *host = card->host; 9072385049dSSeungwon Jeon u32 bus_width, ext_csd_bits; 9082385049dSSeungwon Jeon int err, ddr; 9092385049dSSeungwon Jeon 9102385049dSSeungwon Jeon /* Power class selection is supported for versions >= 4.0 */ 911148bcab2SUlf Hansson if (!mmc_can_ext_csd(card)) 9122385049dSSeungwon Jeon return 0; 9132385049dSSeungwon Jeon 9142385049dSSeungwon Jeon bus_width = host->ios.bus_width; 9152385049dSSeungwon Jeon /* Power class values are defined only for 4/8 bit bus */ 9162385049dSSeungwon Jeon if (bus_width == MMC_BUS_WIDTH_1) 9172385049dSSeungwon Jeon return 0; 9182385049dSSeungwon Jeon 9192385049dSSeungwon Jeon ddr = card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52; 9202385049dSSeungwon Jeon if (ddr) 9212385049dSSeungwon Jeon ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? 9222385049dSSeungwon Jeon EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; 9232385049dSSeungwon Jeon else 9242385049dSSeungwon Jeon ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? 9252385049dSSeungwon Jeon EXT_CSD_BUS_WIDTH_8 : EXT_CSD_BUS_WIDTH_4; 9262385049dSSeungwon Jeon 9272385049dSSeungwon Jeon err = __mmc_select_powerclass(card, ext_csd_bits); 9282385049dSSeungwon Jeon if (err) 9292385049dSSeungwon Jeon pr_warn("%s: power class selection to bus width %d ddr %d failed\n", 9302385049dSSeungwon Jeon mmc_hostname(host), 1 << bus_width, ddr); 9312385049dSSeungwon Jeon 9322385049dSSeungwon Jeon return err; 9332385049dSSeungwon Jeon } 9342385049dSSeungwon Jeon 935b87d8dbfSGirish K S /* 936577fb131SSeungwon Jeon * Set the bus speed for the selected speed mode. 937a4924c71SGirish K S */ 938577fb131SSeungwon Jeon static void mmc_set_bus_speed(struct mmc_card *card) 939a4924c71SGirish K S { 940577fb131SSeungwon Jeon unsigned int max_dtr = (unsigned int)-1; 941577fb131SSeungwon Jeon 9420a5b6438SSeungwon Jeon if ((mmc_card_hs200(card) || mmc_card_hs400(card)) && 9430a5b6438SSeungwon Jeon max_dtr > card->ext_csd.hs200_max_dtr) 944577fb131SSeungwon Jeon max_dtr = card->ext_csd.hs200_max_dtr; 945577fb131SSeungwon Jeon else if (mmc_card_hs(card) && max_dtr > card->ext_csd.hs_max_dtr) 946577fb131SSeungwon Jeon max_dtr = card->ext_csd.hs_max_dtr; 947577fb131SSeungwon Jeon else if (max_dtr > card->csd.max_dtr) 948577fb131SSeungwon Jeon max_dtr = card->csd.max_dtr; 949577fb131SSeungwon Jeon 950577fb131SSeungwon Jeon mmc_set_clock(card->host, max_dtr); 951577fb131SSeungwon Jeon } 952577fb131SSeungwon Jeon 953577fb131SSeungwon Jeon /* 954577fb131SSeungwon Jeon * Select the bus width amoung 4-bit and 8-bit(SDR). 955577fb131SSeungwon Jeon * If the bus width is changed successfully, return the selected width value. 956577fb131SSeungwon Jeon * Zero is returned instead of error value if the wide width is not supported. 957577fb131SSeungwon Jeon */ 958577fb131SSeungwon Jeon static int mmc_select_bus_width(struct mmc_card *card) 959577fb131SSeungwon Jeon { 960a4924c71SGirish K S static unsigned ext_csd_bits[] = { 961a4924c71SGirish K S EXT_CSD_BUS_WIDTH_8, 962577fb131SSeungwon Jeon EXT_CSD_BUS_WIDTH_4, 963a4924c71SGirish K S }; 964a4924c71SGirish K S static unsigned bus_widths[] = { 965a4924c71SGirish K S MMC_BUS_WIDTH_8, 966577fb131SSeungwon Jeon MMC_BUS_WIDTH_4, 967a4924c71SGirish K S }; 968577fb131SSeungwon Jeon struct mmc_host *host = card->host; 969577fb131SSeungwon Jeon unsigned idx, bus_width = 0; 970577fb131SSeungwon Jeon int err = 0; 971a4924c71SGirish K S 9721c2d26e3SAlexandre Belloni if (!mmc_can_ext_csd(card) || 973577fb131SSeungwon Jeon !(host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) 974577fb131SSeungwon Jeon return 0; 975a4924c71SGirish K S 976577fb131SSeungwon Jeon idx = (host->caps & MMC_CAP_8_BIT_DATA) ? 0 : 1; 977a4924c71SGirish K S 978a4924c71SGirish K S /* 979a4924c71SGirish K S * Unlike SD, MMC cards dont have a configuration register to notify 980a4924c71SGirish K S * supported bus width. So bus test command should be run to identify 981a4924c71SGirish K S * the supported bus width or compare the ext csd values of current 982a4924c71SGirish K S * bus width and ext csd values of 1 bit mode read earlier. 983a4924c71SGirish K S */ 984577fb131SSeungwon Jeon for (; idx < ARRAY_SIZE(bus_widths); idx++) { 985a4924c71SGirish K S /* 986a4924c71SGirish K S * Host is capable of 8bit transfer, then switch 987a4924c71SGirish K S * the device to work in 8bit transfer mode. If the 988a4924c71SGirish K S * mmc switch command returns error then switch to 989a4924c71SGirish K S * 4bit transfer mode. On success set the corresponding 990a4924c71SGirish K S * bus width on the host. 991a4924c71SGirish K S */ 992a4924c71SGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 993a4924c71SGirish K S EXT_CSD_BUS_WIDTH, 994a4924c71SGirish K S ext_csd_bits[idx], 995a4924c71SGirish K S card->ext_csd.generic_cmd6_time); 996a4924c71SGirish K S if (err) 997a4924c71SGirish K S continue; 998a4924c71SGirish K S 999577fb131SSeungwon Jeon bus_width = bus_widths[idx]; 1000577fb131SSeungwon Jeon mmc_set_bus_width(host, bus_width); 1001a4924c71SGirish K S 1002577fb131SSeungwon Jeon /* 1003577fb131SSeungwon Jeon * If controller can't handle bus width test, 1004577fb131SSeungwon Jeon * compare ext_csd previously read in 1 bit mode 1005577fb131SSeungwon Jeon * against ext_csd at new bus width 1006577fb131SSeungwon Jeon */ 1007a4924c71SGirish K S if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST)) 1008577fb131SSeungwon Jeon err = mmc_compare_ext_csds(card, bus_width); 1009a4924c71SGirish K S else 1010577fb131SSeungwon Jeon err = mmc_bus_test(card, bus_width); 1011577fb131SSeungwon Jeon 1012577fb131SSeungwon Jeon if (!err) { 1013577fb131SSeungwon Jeon err = bus_width; 1014a4924c71SGirish K S break; 1015577fb131SSeungwon Jeon } else { 1016577fb131SSeungwon Jeon pr_warn("%s: switch to bus width %d failed\n", 1017ed9feec7SWolfram Sang mmc_hostname(host), 1 << bus_width); 1018577fb131SSeungwon Jeon } 1019a4924c71SGirish K S } 1020a4924c71SGirish K S 1021577fb131SSeungwon Jeon return err; 1022577fb131SSeungwon Jeon } 1023577fb131SSeungwon Jeon 1024577fb131SSeungwon Jeon /* 1025577fb131SSeungwon Jeon * Switch to the high-speed mode 1026577fb131SSeungwon Jeon */ 1027577fb131SSeungwon Jeon static int mmc_select_hs(struct mmc_card *card) 1028577fb131SSeungwon Jeon { 1029577fb131SSeungwon Jeon int err; 1030577fb131SSeungwon Jeon 10314509f847SUlf Hansson err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1032577fb131SSeungwon Jeon EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS, 103353e60650SUlf Hansson card->ext_csd.generic_cmd6_time, MMC_TIMING_MMC_HS, 103453e60650SUlf Hansson true, true, true); 103567d35960SJungseung Lee if (err) 103667d35960SJungseung Lee pr_warn("%s: switch to high-speed failed, err:%d\n", 103767d35960SJungseung Lee mmc_hostname(card->host), err); 103867d35960SJungseung Lee 1039577fb131SSeungwon Jeon return err; 1040577fb131SSeungwon Jeon } 1041577fb131SSeungwon Jeon 1042577fb131SSeungwon Jeon /* 1043577fb131SSeungwon Jeon * Activate wide bus and DDR if supported. 1044577fb131SSeungwon Jeon */ 1045577fb131SSeungwon Jeon static int mmc_select_hs_ddr(struct mmc_card *card) 1046577fb131SSeungwon Jeon { 1047577fb131SSeungwon Jeon struct mmc_host *host = card->host; 1048577fb131SSeungwon Jeon u32 bus_width, ext_csd_bits; 1049577fb131SSeungwon Jeon int err = 0; 1050577fb131SSeungwon Jeon 1051577fb131SSeungwon Jeon if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52)) 1052577fb131SSeungwon Jeon return 0; 1053577fb131SSeungwon Jeon 1054577fb131SSeungwon Jeon bus_width = host->ios.bus_width; 1055577fb131SSeungwon Jeon if (bus_width == MMC_BUS_WIDTH_1) 1056577fb131SSeungwon Jeon return 0; 1057577fb131SSeungwon Jeon 1058577fb131SSeungwon Jeon ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? 1059577fb131SSeungwon Jeon EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; 1060577fb131SSeungwon Jeon 1061e173f891SUlf Hansson err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1062577fb131SSeungwon Jeon EXT_CSD_BUS_WIDTH, 1063577fb131SSeungwon Jeon ext_csd_bits, 1064e173f891SUlf Hansson card->ext_csd.generic_cmd6_time, 1065e173f891SUlf Hansson MMC_TIMING_MMC_DDR52, 1066e173f891SUlf Hansson true, true, true); 1067577fb131SSeungwon Jeon if (err) { 10684b75bffcSAndrew Gabbasov pr_err("%s: switch to bus width %d ddr failed\n", 1069577fb131SSeungwon Jeon mmc_hostname(host), 1 << bus_width); 1070577fb131SSeungwon Jeon return err; 1071577fb131SSeungwon Jeon } 1072577fb131SSeungwon Jeon 1073577fb131SSeungwon Jeon /* 1074577fb131SSeungwon Jeon * eMMC cards can support 3.3V to 1.2V i/o (vccq) 1075577fb131SSeungwon Jeon * signaling. 1076577fb131SSeungwon Jeon * 1077577fb131SSeungwon Jeon * EXT_CSD_CARD_TYPE_DDR_1_8V means 3.3V or 1.8V vccq. 1078577fb131SSeungwon Jeon * 1079577fb131SSeungwon Jeon * 1.8V vccq at 3.3V core voltage (vcc) is not required 1080577fb131SSeungwon Jeon * in the JEDEC spec for DDR. 1081577fb131SSeungwon Jeon * 1082312449efSChuanxiao.Dong * Even (e)MMC card can support 3.3v to 1.2v vccq, but not all 1083312449efSChuanxiao.Dong * host controller can support this, like some of the SDHCI 1084312449efSChuanxiao.Dong * controller which connect to an eMMC device. Some of these 1085312449efSChuanxiao.Dong * host controller still needs to use 1.8v vccq for supporting 1086312449efSChuanxiao.Dong * DDR mode. 1087312449efSChuanxiao.Dong * 1088312449efSChuanxiao.Dong * So the sequence will be: 1089312449efSChuanxiao.Dong * if (host and device can both support 1.2v IO) 1090312449efSChuanxiao.Dong * use 1.2v IO; 1091312449efSChuanxiao.Dong * else if (host and device can both support 1.8v IO) 1092312449efSChuanxiao.Dong * use 1.8v IO; 1093312449efSChuanxiao.Dong * so if host and device can only support 3.3v IO, this is the 1094312449efSChuanxiao.Dong * last choice. 1095577fb131SSeungwon Jeon * 1096577fb131SSeungwon Jeon * WARNING: eMMC rules are NOT the same as SD DDR 1097577fb131SSeungwon Jeon */ 1098312449efSChuanxiao.Dong err = -EINVAL; 1099312449efSChuanxiao.Dong if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_2V) 1100312449efSChuanxiao.Dong err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); 1101577fb131SSeungwon Jeon 1102312449efSChuanxiao.Dong if (err && (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_8V)) 1103312449efSChuanxiao.Dong err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); 1104312449efSChuanxiao.Dong 1105312449efSChuanxiao.Dong /* make sure vccq is 3.3v after switching disaster */ 1106312449efSChuanxiao.Dong if (err) 1107312449efSChuanxiao.Dong err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330); 1108312449efSChuanxiao.Dong 1109577fb131SSeungwon Jeon return err; 1110577fb131SSeungwon Jeon } 1111577fb131SSeungwon Jeon 11120a5b6438SSeungwon Jeon static int mmc_select_hs400(struct mmc_card *card) 11130a5b6438SSeungwon Jeon { 11140a5b6438SSeungwon Jeon struct mmc_host *host = card->host; 111551b12f77SAdrian Hunter unsigned int max_dtr; 11160a5b6438SSeungwon Jeon int err = 0; 1117cc4f414cSAdrian Hunter u8 val; 11180a5b6438SSeungwon Jeon 11190a5b6438SSeungwon Jeon /* 11200a5b6438SSeungwon Jeon * HS400 mode requires 8-bit bus width 11210a5b6438SSeungwon Jeon */ 11220a5b6438SSeungwon Jeon if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 && 11230a5b6438SSeungwon Jeon host->ios.bus_width == MMC_BUS_WIDTH_8)) 11240a5b6438SSeungwon Jeon return 0; 11250a5b6438SSeungwon Jeon 112651b12f77SAdrian Hunter /* Switch card to HS mode */ 1127adb24d42SWenkai Du val = EXT_CSD_TIMING_HS; 11280a5b6438SSeungwon Jeon err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1129cc4f414cSAdrian Hunter EXT_CSD_HS_TIMING, val, 1130aa33ce3cSUlf Hansson card->ext_csd.generic_cmd6_time, 0, 113108573eafSChaotian Jing true, false, true); 11320a5b6438SSeungwon Jeon if (err) { 11334b75bffcSAndrew Gabbasov pr_err("%s: switch to high-speed from hs200 failed, err:%d\n", 11340a5b6438SSeungwon Jeon mmc_hostname(host), err); 11350a5b6438SSeungwon Jeon return err; 11360a5b6438SSeungwon Jeon } 11370a5b6438SSeungwon Jeon 113851b12f77SAdrian Hunter /* Set host controller to HS timing */ 113951b12f77SAdrian Hunter mmc_set_timing(card->host, MMC_TIMING_MMC_HS); 114051b12f77SAdrian Hunter 1141649c6059SZiyuan Xu /* Reduce frequency to HS frequency */ 1142649c6059SZiyuan Xu max_dtr = card->ext_csd.hs_max_dtr; 1143649c6059SZiyuan Xu mmc_set_clock(host, max_dtr); 1144649c6059SZiyuan Xu 1145d2302933SAdrian Hunter err = mmc_switch_status(card); 1146d2302933SAdrian Hunter if (err) 1147d2302933SAdrian Hunter goto out_err; 1148d2302933SAdrian Hunter 1149d2302933SAdrian Hunter /* Switch card to DDR */ 11500a5b6438SSeungwon Jeon err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 11510a5b6438SSeungwon Jeon EXT_CSD_BUS_WIDTH, 11520a5b6438SSeungwon Jeon EXT_CSD_DDR_BUS_WIDTH_8, 11530a5b6438SSeungwon Jeon card->ext_csd.generic_cmd6_time); 11540a5b6438SSeungwon Jeon if (err) { 11554b75bffcSAndrew Gabbasov pr_err("%s: switch to bus width for hs400 failed, err:%d\n", 11560a5b6438SSeungwon Jeon mmc_hostname(host), err); 11570a5b6438SSeungwon Jeon return err; 11580a5b6438SSeungwon Jeon } 11590a5b6438SSeungwon Jeon 1160d2302933SAdrian Hunter /* Switch card to HS400 */ 1161cc4f414cSAdrian Hunter val = EXT_CSD_TIMING_HS400 | 1162cc4f414cSAdrian Hunter card->drive_strength << EXT_CSD_DRV_STR_SHIFT; 11630a5b6438SSeungwon Jeon err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1164cc4f414cSAdrian Hunter EXT_CSD_HS_TIMING, val, 1165aa33ce3cSUlf Hansson card->ext_csd.generic_cmd6_time, 0, 116608573eafSChaotian Jing true, false, true); 11670a5b6438SSeungwon Jeon if (err) { 11684b75bffcSAndrew Gabbasov pr_err("%s: switch to hs400 failed, err:%d\n", 11690a5b6438SSeungwon Jeon mmc_hostname(host), err); 11700a5b6438SSeungwon Jeon return err; 11710a5b6438SSeungwon Jeon } 11720a5b6438SSeungwon Jeon 1173d2302933SAdrian Hunter /* Set host controller to HS400 timing and frequency */ 11740a5b6438SSeungwon Jeon mmc_set_timing(host, MMC_TIMING_MMC_HS400); 11750a5b6438SSeungwon Jeon mmc_set_bus_speed(card); 11760a5b6438SSeungwon Jeon 1177d2302933SAdrian Hunter err = mmc_switch_status(card); 1178d2302933SAdrian Hunter if (err) 1179d2302933SAdrian Hunter goto out_err; 1180d2302933SAdrian Hunter 11810a5b6438SSeungwon Jeon return 0; 1182d2302933SAdrian Hunter 1183d2302933SAdrian Hunter out_err: 1184d2302933SAdrian Hunter pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), 1185d2302933SAdrian Hunter __func__, err); 1186d2302933SAdrian Hunter return err; 11870a5b6438SSeungwon Jeon } 11880a5b6438SSeungwon Jeon 11896376f69dSAdrian Hunter int mmc_hs200_to_hs400(struct mmc_card *card) 11906376f69dSAdrian Hunter { 11916376f69dSAdrian Hunter return mmc_select_hs400(card); 11926376f69dSAdrian Hunter } 11936376f69dSAdrian Hunter 11946376f69dSAdrian Hunter int mmc_hs400_to_hs200(struct mmc_card *card) 11956376f69dSAdrian Hunter { 11966376f69dSAdrian Hunter struct mmc_host *host = card->host; 11976376f69dSAdrian Hunter unsigned int max_dtr; 11986376f69dSAdrian Hunter int err; 1199cc4f414cSAdrian Hunter u8 val; 12006376f69dSAdrian Hunter 12016376f69dSAdrian Hunter /* Reduce frequency to HS */ 12026376f69dSAdrian Hunter max_dtr = card->ext_csd.hs_max_dtr; 12036376f69dSAdrian Hunter mmc_set_clock(host, max_dtr); 12046376f69dSAdrian Hunter 12056376f69dSAdrian Hunter /* Switch HS400 to HS DDR */ 1206adb24d42SWenkai Du val = EXT_CSD_TIMING_HS; 12076376f69dSAdrian Hunter err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, 1208aa33ce3cSUlf Hansson val, card->ext_csd.generic_cmd6_time, 0, 120908573eafSChaotian Jing true, false, true); 12106376f69dSAdrian Hunter if (err) 12116376f69dSAdrian Hunter goto out_err; 12126376f69dSAdrian Hunter 12136376f69dSAdrian Hunter mmc_set_timing(host, MMC_TIMING_MMC_DDR52); 12146376f69dSAdrian Hunter 12156376f69dSAdrian Hunter err = mmc_switch_status(card); 12166376f69dSAdrian Hunter if (err) 12176376f69dSAdrian Hunter goto out_err; 12186376f69dSAdrian Hunter 12196376f69dSAdrian Hunter /* Switch HS DDR to HS */ 12206376f69dSAdrian Hunter err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BUS_WIDTH, 12216376f69dSAdrian Hunter EXT_CSD_BUS_WIDTH_8, card->ext_csd.generic_cmd6_time, 1222aa33ce3cSUlf Hansson 0, true, false, true); 12236376f69dSAdrian Hunter if (err) 12246376f69dSAdrian Hunter goto out_err; 12256376f69dSAdrian Hunter 12266376f69dSAdrian Hunter mmc_set_timing(host, MMC_TIMING_MMC_HS); 12276376f69dSAdrian Hunter 12286376f69dSAdrian Hunter err = mmc_switch_status(card); 12296376f69dSAdrian Hunter if (err) 12306376f69dSAdrian Hunter goto out_err; 12316376f69dSAdrian Hunter 12326376f69dSAdrian Hunter /* Switch HS to HS200 */ 1233cc4f414cSAdrian Hunter val = EXT_CSD_TIMING_HS200 | 1234cc4f414cSAdrian Hunter card->drive_strength << EXT_CSD_DRV_STR_SHIFT; 12356376f69dSAdrian Hunter err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, 1236aa33ce3cSUlf Hansson val, card->ext_csd.generic_cmd6_time, 0, 123708573eafSChaotian Jing true, false, true); 12386376f69dSAdrian Hunter if (err) 12396376f69dSAdrian Hunter goto out_err; 12406376f69dSAdrian Hunter 12416376f69dSAdrian Hunter mmc_set_timing(host, MMC_TIMING_MMC_HS200); 12426376f69dSAdrian Hunter 1243ef3d2322SAdrian Hunter /* 1244ef3d2322SAdrian Hunter * For HS200, CRC errors are not a reliable way to know the switch 1245ef3d2322SAdrian Hunter * failed. If there really is a problem, we would expect tuning will 1246ef3d2322SAdrian Hunter * fail and the result ends up the same. 1247ef3d2322SAdrian Hunter */ 1248ef3d2322SAdrian Hunter err = __mmc_switch_status(card, false); 12496376f69dSAdrian Hunter if (err) 12506376f69dSAdrian Hunter goto out_err; 12516376f69dSAdrian Hunter 12526376f69dSAdrian Hunter mmc_set_bus_speed(card); 12536376f69dSAdrian Hunter 12546376f69dSAdrian Hunter return 0; 12556376f69dSAdrian Hunter 12566376f69dSAdrian Hunter out_err: 12576376f69dSAdrian Hunter pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), 12586376f69dSAdrian Hunter __func__, err); 12596376f69dSAdrian Hunter return err; 12606376f69dSAdrian Hunter } 12616376f69dSAdrian Hunter 126281ac2af6SShawn Lin static int mmc_select_hs400es(struct mmc_card *card) 126381ac2af6SShawn Lin { 126481ac2af6SShawn Lin struct mmc_host *host = card->host; 126581ac2af6SShawn Lin int err = 0; 126681ac2af6SShawn Lin u8 val; 126781ac2af6SShawn Lin 126881ac2af6SShawn Lin if (!(host->caps & MMC_CAP_8_BIT_DATA)) { 126981ac2af6SShawn Lin err = -ENOTSUPP; 127081ac2af6SShawn Lin goto out_err; 127181ac2af6SShawn Lin } 127281ac2af6SShawn Lin 12731720d354SShawn Lin if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400_1_2V) 12741720d354SShawn Lin err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); 12751720d354SShawn Lin 12761720d354SShawn Lin if (err && card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400_1_8V) 12771720d354SShawn Lin err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); 12781720d354SShawn Lin 12791720d354SShawn Lin /* If fails try again during next card power cycle */ 12801720d354SShawn Lin if (err) 12811720d354SShawn Lin goto out_err; 12821720d354SShawn Lin 128381ac2af6SShawn Lin err = mmc_select_bus_width(card); 128481ac2af6SShawn Lin if (err < 0) 128581ac2af6SShawn Lin goto out_err; 128681ac2af6SShawn Lin 128781ac2af6SShawn Lin /* Switch card to HS mode */ 128853e60650SUlf Hansson err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 128953e60650SUlf Hansson EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS, 129053e60650SUlf Hansson card->ext_csd.generic_cmd6_time, 0, 129153e60650SUlf Hansson true, false, true); 129253e60650SUlf Hansson if (err) { 129353e60650SUlf Hansson pr_err("%s: switch to hs for hs400es failed, err:%d\n", 129453e60650SUlf Hansson mmc_hostname(host), err); 129553e60650SUlf Hansson goto out_err; 129653e60650SUlf Hansson } 129753e60650SUlf Hansson 129853e60650SUlf Hansson mmc_set_timing(host, MMC_TIMING_MMC_HS); 129953e60650SUlf Hansson err = mmc_switch_status(card); 130067d35960SJungseung Lee if (err) 130181ac2af6SShawn Lin goto out_err; 130281ac2af6SShawn Lin 13034f25580fSShawn Lin mmc_set_clock(host, card->ext_csd.hs_max_dtr); 13044f25580fSShawn Lin 130581ac2af6SShawn Lin /* Switch card to DDR with strobe bit */ 130681ac2af6SShawn Lin val = EXT_CSD_DDR_BUS_WIDTH_8 | EXT_CSD_BUS_WIDTH_STROBE; 130781ac2af6SShawn Lin err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 130881ac2af6SShawn Lin EXT_CSD_BUS_WIDTH, 130981ac2af6SShawn Lin val, 131081ac2af6SShawn Lin card->ext_csd.generic_cmd6_time); 131181ac2af6SShawn Lin if (err) { 131281ac2af6SShawn Lin pr_err("%s: switch to bus width for hs400es failed, err:%d\n", 131381ac2af6SShawn Lin mmc_hostname(host), err); 131481ac2af6SShawn Lin goto out_err; 131581ac2af6SShawn Lin } 131681ac2af6SShawn Lin 131781ac2af6SShawn Lin /* Switch card to HS400 */ 131881ac2af6SShawn Lin val = EXT_CSD_TIMING_HS400 | 131981ac2af6SShawn Lin card->drive_strength << EXT_CSD_DRV_STR_SHIFT; 132081ac2af6SShawn Lin err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 132181ac2af6SShawn Lin EXT_CSD_HS_TIMING, val, 1322aa33ce3cSUlf Hansson card->ext_csd.generic_cmd6_time, 0, 132381ac2af6SShawn Lin true, false, true); 132481ac2af6SShawn Lin if (err) { 132581ac2af6SShawn Lin pr_err("%s: switch to hs400es failed, err:%d\n", 132681ac2af6SShawn Lin mmc_hostname(host), err); 132781ac2af6SShawn Lin goto out_err; 132881ac2af6SShawn Lin } 132981ac2af6SShawn Lin 133081ac2af6SShawn Lin /* Set host controller to HS400 timing and frequency */ 133181ac2af6SShawn Lin mmc_set_timing(host, MMC_TIMING_MMC_HS400); 133281ac2af6SShawn Lin 133381ac2af6SShawn Lin /* Controller enable enhanced strobe function */ 133481ac2af6SShawn Lin host->ios.enhanced_strobe = true; 133581ac2af6SShawn Lin if (host->ops->hs400_enhanced_strobe) 133681ac2af6SShawn Lin host->ops->hs400_enhanced_strobe(host, &host->ios); 133781ac2af6SShawn Lin 133881ac2af6SShawn Lin err = mmc_switch_status(card); 133981ac2af6SShawn Lin if (err) 134081ac2af6SShawn Lin goto out_err; 134181ac2af6SShawn Lin 134281ac2af6SShawn Lin return 0; 134381ac2af6SShawn Lin 134481ac2af6SShawn Lin out_err: 134581ac2af6SShawn Lin pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), 134681ac2af6SShawn Lin __func__, err); 134781ac2af6SShawn Lin return err; 134881ac2af6SShawn Lin } 134981ac2af6SShawn Lin 1350cc4f414cSAdrian Hunter static void mmc_select_driver_type(struct mmc_card *card) 1351cc4f414cSAdrian Hunter { 1352cc4f414cSAdrian Hunter int card_drv_type, drive_strength, drv_type; 1353cc4f414cSAdrian Hunter 1354cc4f414cSAdrian Hunter card_drv_type = card->ext_csd.raw_driver_strength | 1355cc4f414cSAdrian Hunter mmc_driver_type_mask(0); 1356cc4f414cSAdrian Hunter 1357cc4f414cSAdrian Hunter drive_strength = mmc_select_drive_strength(card, 1358cc4f414cSAdrian Hunter card->ext_csd.hs200_max_dtr, 1359cc4f414cSAdrian Hunter card_drv_type, &drv_type); 1360cc4f414cSAdrian Hunter 1361cc4f414cSAdrian Hunter card->drive_strength = drive_strength; 1362cc4f414cSAdrian Hunter 1363cc4f414cSAdrian Hunter if (drv_type) 1364cc4f414cSAdrian Hunter mmc_set_driver_type(card->host, drv_type); 1365cc4f414cSAdrian Hunter } 1366cc4f414cSAdrian Hunter 1367577fb131SSeungwon Jeon /* 1368577fb131SSeungwon Jeon * For device supporting HS200 mode, the following sequence 1369577fb131SSeungwon Jeon * should be done before executing the tuning process. 1370577fb131SSeungwon Jeon * 1. set the desired bus width(4-bit or 8-bit, 1-bit is not supported) 1371577fb131SSeungwon Jeon * 2. switch to HS200 mode 1372577fb131SSeungwon Jeon * 3. set the clock to > 52Mhz and <=200MHz 1373577fb131SSeungwon Jeon */ 1374577fb131SSeungwon Jeon static int mmc_select_hs200(struct mmc_card *card) 1375577fb131SSeungwon Jeon { 1376577fb131SSeungwon Jeon struct mmc_host *host = card->host; 1377e51534c8SDong Aisheng unsigned int old_timing, old_signal_voltage; 1378577fb131SSeungwon Jeon int err = -EINVAL; 1379cc4f414cSAdrian Hunter u8 val; 1380577fb131SSeungwon Jeon 1381e51534c8SDong Aisheng old_signal_voltage = host->ios.signal_voltage; 1382577fb131SSeungwon Jeon if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_2V) 1383577fb131SSeungwon Jeon err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); 1384577fb131SSeungwon Jeon 1385577fb131SSeungwon Jeon if (err && card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_8V) 1386577fb131SSeungwon Jeon err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); 1387577fb131SSeungwon Jeon 1388577fb131SSeungwon Jeon /* If fails try again during next card power cycle */ 1389577fb131SSeungwon Jeon if (err) 1390e51534c8SDong Aisheng return err; 1391577fb131SSeungwon Jeon 1392cc4f414cSAdrian Hunter mmc_select_driver_type(card); 1393cc4f414cSAdrian Hunter 1394577fb131SSeungwon Jeon /* 1395577fb131SSeungwon Jeon * Set the bus width(4 or 8) with host's support and 1396577fb131SSeungwon Jeon * switch to HS200 mode if bus width is set successfully. 1397577fb131SSeungwon Jeon */ 1398577fb131SSeungwon Jeon err = mmc_select_bus_width(card); 13998b7be8f2SPeter Griffin if (err > 0) { 1400cc4f414cSAdrian Hunter val = EXT_CSD_TIMING_HS200 | 1401cc4f414cSAdrian Hunter card->drive_strength << EXT_CSD_DRV_STR_SHIFT; 1402577fb131SSeungwon Jeon err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1403cc4f414cSAdrian Hunter EXT_CSD_HS_TIMING, val, 1404aa33ce3cSUlf Hansson card->ext_csd.generic_cmd6_time, 0, 140508573eafSChaotian Jing true, false, true); 14061815e61bSAdrian Hunter if (err) 14071815e61bSAdrian Hunter goto err; 14081815e61bSAdrian Hunter old_timing = host->ios.timing; 1409577fb131SSeungwon Jeon mmc_set_timing(host, MMC_TIMING_MMC_HS200); 141008573eafSChaotian Jing 1411ef3d2322SAdrian Hunter /* 1412ef3d2322SAdrian Hunter * For HS200, CRC errors are not a reliable way to know the 1413ef3d2322SAdrian Hunter * switch failed. If there really is a problem, we would expect 1414ef3d2322SAdrian Hunter * tuning will fail and the result ends up the same. 1415ef3d2322SAdrian Hunter */ 1416ef3d2322SAdrian Hunter err = __mmc_switch_status(card, false); 1417ef3d2322SAdrian Hunter 14181815e61bSAdrian Hunter /* 14191815e61bSAdrian Hunter * mmc_select_timing() assumes timing has not changed if 14201815e61bSAdrian Hunter * it is a switch error. 14211815e61bSAdrian Hunter */ 14221815e61bSAdrian Hunter if (err == -EBADMSG) 14231815e61bSAdrian Hunter mmc_set_timing(host, old_timing); 14241815e61bSAdrian Hunter } 1425a4924c71SGirish K S err: 1426e51534c8SDong Aisheng if (err) { 1427e51534c8SDong Aisheng /* fall back to the old signal voltage, if fails report error */ 1428e51534c8SDong Aisheng if (__mmc_set_signal_voltage(host, old_signal_voltage)) 1429e51534c8SDong Aisheng err = -EIO; 1430e51534c8SDong Aisheng 14311815e61bSAdrian Hunter pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), 14321815e61bSAdrian Hunter __func__, err); 1433e51534c8SDong Aisheng } 1434a4924c71SGirish K S return err; 1435a4924c71SGirish K S } 1436a4924c71SGirish K S 1437a4924c71SGirish K S /* 143881ac2af6SShawn Lin * Activate High Speed, HS200 or HS400ES mode if supported. 1439577fb131SSeungwon Jeon */ 1440577fb131SSeungwon Jeon static int mmc_select_timing(struct mmc_card *card) 1441577fb131SSeungwon Jeon { 1442577fb131SSeungwon Jeon int err = 0; 1443577fb131SSeungwon Jeon 1444148bcab2SUlf Hansson if (!mmc_can_ext_csd(card)) 1445577fb131SSeungwon Jeon goto bus_speed; 1446577fb131SSeungwon Jeon 144781ac2af6SShawn Lin if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400ES) 144881ac2af6SShawn Lin err = mmc_select_hs400es(card); 144981ac2af6SShawn Lin else if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200) 1450577fb131SSeungwon Jeon err = mmc_select_hs200(card); 1451577fb131SSeungwon Jeon else if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS) 1452577fb131SSeungwon Jeon err = mmc_select_hs(card); 1453577fb131SSeungwon Jeon 1454577fb131SSeungwon Jeon if (err && err != -EBADMSG) 1455577fb131SSeungwon Jeon return err; 1456577fb131SSeungwon Jeon 1457577fb131SSeungwon Jeon bus_speed: 1458577fb131SSeungwon Jeon /* 1459577fb131SSeungwon Jeon * Set the bus speed to the selected bus timing. 1460577fb131SSeungwon Jeon * If timing is not selected, backward compatible is the default. 1461577fb131SSeungwon Jeon */ 1462577fb131SSeungwon Jeon mmc_set_bus_speed(card); 14630400ed0aSDong Aisheng return 0; 1464577fb131SSeungwon Jeon } 1465577fb131SSeungwon Jeon 1466577fb131SSeungwon Jeon /* 1467577fb131SSeungwon Jeon * Execute tuning sequence to seek the proper bus operating 14680a5b6438SSeungwon Jeon * conditions for HS200 and HS400, which sends CMD21 to the device. 1469577fb131SSeungwon Jeon */ 1470577fb131SSeungwon Jeon static int mmc_hs200_tuning(struct mmc_card *card) 1471577fb131SSeungwon Jeon { 1472577fb131SSeungwon Jeon struct mmc_host *host = card->host; 1473577fb131SSeungwon Jeon 14740a5b6438SSeungwon Jeon /* 14750a5b6438SSeungwon Jeon * Timing should be adjusted to the HS400 target 14760a5b6438SSeungwon Jeon * operation frequency for tuning process 14770a5b6438SSeungwon Jeon */ 14780a5b6438SSeungwon Jeon if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 && 14790a5b6438SSeungwon Jeon host->ios.bus_width == MMC_BUS_WIDTH_8) 14800a5b6438SSeungwon Jeon if (host->ops->prepare_hs400_tuning) 14810a5b6438SSeungwon Jeon host->ops->prepare_hs400_tuning(host, &host->ios); 14820a5b6438SSeungwon Jeon 148363e415c6SAdrian Hunter return mmc_execute_tuning(card); 1484577fb131SSeungwon Jeon } 1485577fb131SSeungwon Jeon 1486577fb131SSeungwon Jeon /* 14876abaa0c9SPierre Ossman * Handle the detection and initialisation of a card. 14886abaa0c9SPierre Ossman * 14898769392bSDeepak Saxena * In the case of a resume, "oldcard" will contain the card 14906abaa0c9SPierre Ossman * we're trying to reinitialise. 14917ea239d9SPierre Ossman */ 14928c75deaeSPierre Ossman static int mmc_init_card(struct mmc_host *host, u32 ocr, 14936abaa0c9SPierre Ossman struct mmc_card *oldcard) 14947ea239d9SPierre Ossman { 14957ea239d9SPierre Ossman struct mmc_card *card; 1496577fb131SSeungwon Jeon int err; 14977ea239d9SPierre Ossman u32 cid[4]; 1498b676f039SPhilip Rakity u32 rocr; 14997ea239d9SPierre Ossman 1500d84075c8SPierre Ossman WARN_ON(!host->claimed); 15017ea239d9SPierre Ossman 150244669034SStefan Nilsson XK /* Set correct bus mode for MMC before attempting init */ 150344669034SStefan Nilsson XK if (!mmc_host_is_spi(host)) 150444669034SStefan Nilsson XK mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); 150544669034SStefan Nilsson XK 15067ea239d9SPierre Ossman /* 15077ea239d9SPierre Ossman * Since we're changing the OCR value, we seem to 15087ea239d9SPierre Ossman * need to tell some cards to go back to the idle 15097ea239d9SPierre Ossman * state. We wait 1ms to give cards time to 15107ea239d9SPierre Ossman * respond. 1511c3805467SBalaji T K * mmc_go_idle is needed for eMMC that are asleep 15127ea239d9SPierre Ossman */ 15137ea239d9SPierre Ossman mmc_go_idle(host); 15147ea239d9SPierre Ossman 15157ea239d9SPierre Ossman /* The extra bit indicates that we support high capacity */ 1516b676f039SPhilip Rakity err = mmc_send_op_cond(host, ocr | (1 << 30), &rocr); 151717b0429dSPierre Ossman if (err) 15186abaa0c9SPierre Ossman goto err; 15197ea239d9SPierre Ossman 15207ea239d9SPierre Ossman /* 1521af517150SDavid Brownell * For SPI, enable CRC as appropriate. 1522af517150SDavid Brownell */ 1523af517150SDavid Brownell if (mmc_host_is_spi(host)) { 1524af517150SDavid Brownell err = mmc_spi_set_crc(host, use_spi_crc); 1525af517150SDavid Brownell if (err) 1526af517150SDavid Brownell goto err; 1527af517150SDavid Brownell } 1528af517150SDavid Brownell 1529af517150SDavid Brownell /* 15307ea239d9SPierre Ossman * Fetch CID from card. 15317ea239d9SPierre Ossman */ 1532af517150SDavid Brownell if (mmc_host_is_spi(host)) 1533af517150SDavid Brownell err = mmc_send_cid(host, cid); 1534af517150SDavid Brownell else 15357ea239d9SPierre Ossman err = mmc_all_send_cid(host, cid); 153617b0429dSPierre Ossman if (err) 15377ea239d9SPierre Ossman goto err; 15387ea239d9SPierre Ossman 15396abaa0c9SPierre Ossman if (oldcard) { 1540adf66a0dSPierre Ossman if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) { 1541adf66a0dSPierre Ossman err = -ENOENT; 15426abaa0c9SPierre Ossman goto err; 1543adf66a0dSPierre Ossman } 15446abaa0c9SPierre Ossman 15456abaa0c9SPierre Ossman card = oldcard; 15466abaa0c9SPierre Ossman } else { 15477ea239d9SPierre Ossman /* 15487ea239d9SPierre Ossman * Allocate card structure. 15497ea239d9SPierre Ossman */ 155051ec92e2SPierre Ossman card = mmc_alloc_card(host, &mmc_type); 1551adf66a0dSPierre Ossman if (IS_ERR(card)) { 1552adf66a0dSPierre Ossman err = PTR_ERR(card); 15537ea239d9SPierre Ossman goto err; 1554adf66a0dSPierre Ossman } 15557ea239d9SPierre Ossman 155669041150SUlf Hansson card->ocr = ocr; 15577ea239d9SPierre Ossman card->type = MMC_TYPE_MMC; 15587ea239d9SPierre Ossman card->rca = 1; 15597ea239d9SPierre Ossman memcpy(card->raw_cid, cid, sizeof(card->raw_cid)); 15606abaa0c9SPierre Ossman } 15617ea239d9SPierre Ossman 15627ea239d9SPierre Ossman /* 1563eac86321SDoug Anderson * Call the optional HC's init_card function to handle quirks. 1564eac86321SDoug Anderson */ 1565eac86321SDoug Anderson if (host->ops->init_card) 1566eac86321SDoug Anderson host->ops->init_card(host, card); 1567eac86321SDoug Anderson 1568eac86321SDoug Anderson /* 1569af517150SDavid Brownell * For native busses: set card RCA and quit open drain mode. 15707ea239d9SPierre Ossman */ 1571af517150SDavid Brownell if (!mmc_host_is_spi(host)) { 15727ea239d9SPierre Ossman err = mmc_set_relative_addr(card); 157317b0429dSPierre Ossman if (err) 15747ea239d9SPierre Ossman goto free_card; 15757ea239d9SPierre Ossman 15767ea239d9SPierre Ossman mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL); 1577af517150SDavid Brownell } 15787ea239d9SPierre Ossman 15796abaa0c9SPierre Ossman if (!oldcard) { 15807ea239d9SPierre Ossman /* 15817ea239d9SPierre Ossman * Fetch CSD from card. 15827ea239d9SPierre Ossman */ 15837ea239d9SPierre Ossman err = mmc_send_csd(card, card->raw_csd); 158417b0429dSPierre Ossman if (err) 15857ea239d9SPierre Ossman goto free_card; 15867ea239d9SPierre Ossman 1587bd766312SPierre Ossman err = mmc_decode_csd(card); 1588adf66a0dSPierre Ossman if (err) 1589bd766312SPierre Ossman goto free_card; 1590bd766312SPierre Ossman err = mmc_decode_cid(card); 1591adf66a0dSPierre Ossman if (err) 1592bd766312SPierre Ossman goto free_card; 15936abaa0c9SPierre Ossman } 15947ea239d9SPierre Ossman 15957ea239d9SPierre Ossman /* 15963d705d14SSascha Hauer * handling only for cards supporting DSR and hosts requesting 15973d705d14SSascha Hauer * DSR configuration 15983d705d14SSascha Hauer */ 15993d705d14SSascha Hauer if (card->csd.dsr_imp && host->dsr_req) 16003d705d14SSascha Hauer mmc_set_dsr(host); 16013d705d14SSascha Hauer 16023d705d14SSascha Hauer /* 160389a73cf5SPierre Ossman * Select card, as all following commands rely on that. 16047ea239d9SPierre Ossman */ 1605af517150SDavid Brownell if (!mmc_host_is_spi(host)) { 16067ea239d9SPierre Ossman err = mmc_select_card(card); 160717b0429dSPierre Ossman if (err) 16087ea239d9SPierre Ossman goto free_card; 1609af517150SDavid Brownell } 16107ea239d9SPierre Ossman 16116abaa0c9SPierre Ossman if (!oldcard) { 1612076ec38aSUlf Hansson /* Read extended CSD. */ 1613076ec38aSUlf Hansson err = mmc_read_ext_csd(card); 161417b0429dSPierre Ossman if (err) 16157ea239d9SPierre Ossman goto free_card; 1616b676f039SPhilip Rakity 161787e88659SMasahiro Yamada /* 161887e88659SMasahiro Yamada * If doing byte addressing, check if required to do sector 1619b676f039SPhilip Rakity * addressing. Handle the case of <2GB cards needing sector 1620b676f039SPhilip Rakity * addressing. See section 8.1 JEDEC Standard JED84-A441; 1621b676f039SPhilip Rakity * ocr register has bit 30 set for sector addressing. 1622b676f039SPhilip Rakity */ 162387e88659SMasahiro Yamada if (rocr & BIT(30)) 1624b676f039SPhilip Rakity mmc_card_set_blockaddr(card); 1625b676f039SPhilip Rakity 1626dfe86cbaSAdrian Hunter /* Erase size depends on CSD and Extended CSD */ 1627dfe86cbaSAdrian Hunter mmc_set_erase_size(card); 16286abaa0c9SPierre Ossman } 16297ea239d9SPierre Ossman 16307ea239d9SPierre Ossman /* 1631709de99dSChuanxiao Dong * If enhanced_area_en is TRUE, host needs to enable ERASE_GRP_DEF 1632709de99dSChuanxiao Dong * bit. This bit will be lost every time after a reset or power off. 1633709de99dSChuanxiao Dong */ 163469803d4fSGrégory Soutadé if (card->ext_csd.partition_setting_completed || 163583bb24aaSAdrian Hunter (card->ext_csd.rev >= 3 && (host->caps2 & MMC_CAP2_HC_ERASE_SZ))) { 1636709de99dSChuanxiao Dong err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1637b23cf0bdSSeungwon Jeon EXT_CSD_ERASE_GROUP_DEF, 1, 1638b23cf0bdSSeungwon Jeon card->ext_csd.generic_cmd6_time); 1639709de99dSChuanxiao Dong 1640709de99dSChuanxiao Dong if (err && err != -EBADMSG) 1641709de99dSChuanxiao Dong goto free_card; 1642709de99dSChuanxiao Dong 1643709de99dSChuanxiao Dong if (err) { 1644709de99dSChuanxiao Dong err = 0; 1645709de99dSChuanxiao Dong /* 1646709de99dSChuanxiao Dong * Just disable enhanced area off & sz 1647709de99dSChuanxiao Dong * will try to enable ERASE_GROUP_DEF 1648709de99dSChuanxiao Dong * during next time reinit 1649709de99dSChuanxiao Dong */ 1650709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset = -EINVAL; 1651709de99dSChuanxiao Dong card->ext_csd.enhanced_area_size = -EINVAL; 1652709de99dSChuanxiao Dong } else { 1653709de99dSChuanxiao Dong card->ext_csd.erase_group_def = 1; 1654709de99dSChuanxiao Dong /* 1655709de99dSChuanxiao Dong * enable ERASE_GRP_DEF successfully. 1656709de99dSChuanxiao Dong * This will affect the erase size, so 1657709de99dSChuanxiao Dong * here need to reset erase size 1658709de99dSChuanxiao Dong */ 1659709de99dSChuanxiao Dong mmc_set_erase_size(card); 1660709de99dSChuanxiao Dong } 1661709de99dSChuanxiao Dong } 1662709de99dSChuanxiao Dong 1663709de99dSChuanxiao Dong /* 166441e2a489SPhilip Rakity * Ensure eMMC user default partition is enabled 166541e2a489SPhilip Rakity */ 1666371a689fSAndrei Warkentin if (card->ext_csd.part_config & EXT_CSD_PART_CONFIG_ACC_MASK) { 1667371a689fSAndrei Warkentin card->ext_csd.part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK; 1668371a689fSAndrei Warkentin err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONFIG, 1669371a689fSAndrei Warkentin card->ext_csd.part_config, 1670371a689fSAndrei Warkentin card->ext_csd.part_time); 1671371a689fSAndrei Warkentin if (err && err != -EBADMSG) 1672371a689fSAndrei Warkentin goto free_card; 167341e2a489SPhilip Rakity } 167441e2a489SPhilip Rakity 167541e2a489SPhilip Rakity /* 167643235679SUlf Hansson * Enable power_off_notification byte in the ext_csd register 1677bec8726aSGirish K S */ 167843235679SUlf Hansson if (card->ext_csd.rev >= 6) { 1679bec8726aSGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1680bec8726aSGirish K S EXT_CSD_POWER_OFF_NOTIFICATION, 1681bec8726aSGirish K S EXT_CSD_POWER_ON, 1682bec8726aSGirish K S card->ext_csd.generic_cmd6_time); 1683bec8726aSGirish K S if (err && err != -EBADMSG) 1684bec8726aSGirish K S goto free_card; 1685bec8726aSGirish K S 168696a85d54SGirish K S /* 168796a85d54SGirish K S * The err can be -EBADMSG or 0, 168896a85d54SGirish K S * so check for success and update the flag 168996a85d54SGirish K S */ 1690bec8726aSGirish K S if (!err) 1691e6c08586SUlf Hansson card->ext_csd.power_off_notification = EXT_CSD_POWER_ON; 169296a85d54SGirish K S } 1693bec8726aSGirish K S 1694bec8726aSGirish K S /* 1695577fb131SSeungwon Jeon * Select timing interface 169689a73cf5SPierre Ossman */ 1697577fb131SSeungwon Jeon err = mmc_select_timing(card); 1698577fb131SSeungwon Jeon if (err) 169989a73cf5SPierre Ossman goto free_card; 170089a73cf5SPierre Ossman 1701a4924c71SGirish K S if (mmc_card_hs200(card)) { 1702577fb131SSeungwon Jeon err = mmc_hs200_tuning(card); 17034c4cb171SPhilip Rakity if (err) 17044b75bffcSAndrew Gabbasov goto free_card; 17050a5b6438SSeungwon Jeon 17060a5b6438SSeungwon Jeon err = mmc_select_hs400(card); 17070a5b6438SSeungwon Jeon if (err) 17084b75bffcSAndrew Gabbasov goto free_card; 1709577fb131SSeungwon Jeon } else if (mmc_card_hs(card)) { 1710577fb131SSeungwon Jeon /* Select the desired bus width optionally */ 1711577fb131SSeungwon Jeon err = mmc_select_bus_width(card); 17128b7be8f2SPeter Griffin if (err > 0) { 1713577fb131SSeungwon Jeon err = mmc_select_hs_ddr(card); 1714577fb131SSeungwon Jeon if (err) 17154b75bffcSAndrew Gabbasov goto free_card; 171689a73cf5SPierre Ossman } 1717ef0b27d4SAdrian Hunter } 171889a73cf5SPierre Ossman 1719881d1c25SSeungwon Jeon /* 17202385049dSSeungwon Jeon * Choose the power class with selected bus interface 17212385049dSSeungwon Jeon */ 17222385049dSSeungwon Jeon mmc_select_powerclass(card); 17232385049dSSeungwon Jeon 17242385049dSSeungwon Jeon /* 172552d0974eSSubhash Jadavani * Enable HPI feature (if supported) 172652d0974eSSubhash Jadavani */ 172752d0974eSSubhash Jadavani if (card->ext_csd.hpi) { 172852d0974eSSubhash Jadavani err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 172952d0974eSSubhash Jadavani EXT_CSD_HPI_MGMT, 1, 173052d0974eSSubhash Jadavani card->ext_csd.generic_cmd6_time); 173152d0974eSSubhash Jadavani if (err && err != -EBADMSG) 173252d0974eSSubhash Jadavani goto free_card; 173352d0974eSSubhash Jadavani if (err) { 17346606110dSJoe Perches pr_warn("%s: Enabling HPI failed\n", 173552d0974eSSubhash Jadavani mmc_hostname(card->host)); 173652d0974eSSubhash Jadavani err = 0; 173752d0974eSSubhash Jadavani } else 173852d0974eSSubhash Jadavani card->ext_csd.hpi_en = 1; 173952d0974eSSubhash Jadavani } 174052d0974eSSubhash Jadavani 174152d0974eSSubhash Jadavani /* 1742881d1c25SSeungwon Jeon * If cache size is higher than 0, this indicates 1743881d1c25SSeungwon Jeon * the existence of cache and it can be turned on. 1744881d1c25SSeungwon Jeon */ 17455320226aSPratibhasagar V if (!mmc_card_broken_hpi(card) && 17465320226aSPratibhasagar V card->ext_csd.cache_size > 0) { 1747881d1c25SSeungwon Jeon err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 17488bc0678bSSeungwon Jeon EXT_CSD_CACHE_CTRL, 1, 17498bc0678bSSeungwon Jeon card->ext_csd.generic_cmd6_time); 1750881d1c25SSeungwon Jeon if (err && err != -EBADMSG) 1751881d1c25SSeungwon Jeon goto free_card; 1752881d1c25SSeungwon Jeon 1753881d1c25SSeungwon Jeon /* 1754881d1c25SSeungwon Jeon * Only if no error, cache is turned on successfully. 1755881d1c25SSeungwon Jeon */ 17568bc0678bSSeungwon Jeon if (err) { 17576606110dSJoe Perches pr_warn("%s: Cache is supported, but failed to turn on (%d)\n", 17588bc0678bSSeungwon Jeon mmc_hostname(card->host), err); 17598bc0678bSSeungwon Jeon card->ext_csd.cache_ctrl = 0; 17608bc0678bSSeungwon Jeon err = 0; 17618bc0678bSSeungwon Jeon } else { 17628bc0678bSSeungwon Jeon card->ext_csd.cache_ctrl = 1; 17638bc0678bSSeungwon Jeon } 1764881d1c25SSeungwon Jeon } 1765881d1c25SSeungwon Jeon 1766abd9ac14SSeungwon Jeon /* 1767abd9ac14SSeungwon Jeon * The mandatory minimum values are defined for packed command. 1768abd9ac14SSeungwon Jeon * read: 5, write: 3 1769abd9ac14SSeungwon Jeon */ 1770abd9ac14SSeungwon Jeon if (card->ext_csd.max_packed_writes >= 3 && 1771abd9ac14SSeungwon Jeon card->ext_csd.max_packed_reads >= 5 && 1772abd9ac14SSeungwon Jeon host->caps2 & MMC_CAP2_PACKED_CMD) { 1773abd9ac14SSeungwon Jeon err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1774abd9ac14SSeungwon Jeon EXT_CSD_EXP_EVENTS_CTRL, 1775abd9ac14SSeungwon Jeon EXT_CSD_PACKED_EVENT_EN, 1776abd9ac14SSeungwon Jeon card->ext_csd.generic_cmd6_time); 1777abd9ac14SSeungwon Jeon if (err && err != -EBADMSG) 1778abd9ac14SSeungwon Jeon goto free_card; 1779abd9ac14SSeungwon Jeon if (err) { 1780abd9ac14SSeungwon Jeon pr_warn("%s: Enabling packed event failed\n", 1781abd9ac14SSeungwon Jeon mmc_hostname(card->host)); 1782abd9ac14SSeungwon Jeon card->ext_csd.packed_event_en = 0; 1783abd9ac14SSeungwon Jeon err = 0; 1784abd9ac14SSeungwon Jeon } else { 1785abd9ac14SSeungwon Jeon card->ext_csd.packed_event_en = 1; 1786abd9ac14SSeungwon Jeon } 1787abd9ac14SSeungwon Jeon } 1788abd9ac14SSeungwon Jeon 17896abaa0c9SPierre Ossman if (!oldcard) 17907ea239d9SPierre Ossman host->card = card; 17917ea239d9SPierre Ossman 179217b0429dSPierre Ossman return 0; 17936abaa0c9SPierre Ossman 17946abaa0c9SPierre Ossman free_card: 17956abaa0c9SPierre Ossman if (!oldcard) 17966abaa0c9SPierre Ossman mmc_remove_card(card); 17976abaa0c9SPierre Ossman err: 1798adf66a0dSPierre Ossman return err; 17996abaa0c9SPierre Ossman } 18006abaa0c9SPierre Ossman 180107a68216SUlf Hansson static int mmc_can_sleep(struct mmc_card *card) 180207a68216SUlf Hansson { 180307a68216SUlf Hansson return (card && card->ext_csd.rev >= 3); 180407a68216SUlf Hansson } 180507a68216SUlf Hansson 180607a68216SUlf Hansson static int mmc_sleep(struct mmc_host *host) 180707a68216SUlf Hansson { 180807a68216SUlf Hansson struct mmc_command cmd = {0}; 180907a68216SUlf Hansson struct mmc_card *card = host->card; 1810cb962e04SUlf Hansson unsigned int timeout_ms = DIV_ROUND_UP(card->ext_csd.sa_timeout, 10000); 181107a68216SUlf Hansson int err; 181207a68216SUlf Hansson 1813436f8daaSAdrian Hunter /* Re-tuning can't be done once the card is deselected */ 1814436f8daaSAdrian Hunter mmc_retune_hold(host); 1815436f8daaSAdrian Hunter 181607a68216SUlf Hansson err = mmc_deselect_cards(host); 181707a68216SUlf Hansson if (err) 1818436f8daaSAdrian Hunter goto out_release; 181907a68216SUlf Hansson 182007a68216SUlf Hansson cmd.opcode = MMC_SLEEP_AWAKE; 182107a68216SUlf Hansson cmd.arg = card->rca << 16; 182207a68216SUlf Hansson cmd.arg |= 1 << 15; 182307a68216SUlf Hansson 1824cb962e04SUlf Hansson /* 1825cb962e04SUlf Hansson * If the max_busy_timeout of the host is specified, validate it against 1826cb962e04SUlf Hansson * the sleep cmd timeout. A failure means we need to prevent the host 1827cb962e04SUlf Hansson * from doing hw busy detection, which is done by converting to a R1 1828cb962e04SUlf Hansson * response instead of a R1B. 1829cb962e04SUlf Hansson */ 1830cb962e04SUlf Hansson if (host->max_busy_timeout && (timeout_ms > host->max_busy_timeout)) { 1831cb962e04SUlf Hansson cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; 1832cb962e04SUlf Hansson } else { 183307a68216SUlf Hansson cmd.flags = MMC_RSP_R1B | MMC_CMD_AC; 1834cb962e04SUlf Hansson cmd.busy_timeout = timeout_ms; 1835cb962e04SUlf Hansson } 1836cb962e04SUlf Hansson 183707a68216SUlf Hansson err = mmc_wait_for_cmd(host, &cmd, 0); 183807a68216SUlf Hansson if (err) 1839436f8daaSAdrian Hunter goto out_release; 184007a68216SUlf Hansson 184107a68216SUlf Hansson /* 184207a68216SUlf Hansson * If the host does not wait while the card signals busy, then we will 184307a68216SUlf Hansson * will have to wait the sleep/awake timeout. Note, we cannot use the 184407a68216SUlf Hansson * SEND_STATUS command to poll the status because that command (and most 184507a68216SUlf Hansson * others) is invalid while the card sleeps. 184607a68216SUlf Hansson */ 1847cb962e04SUlf Hansson if (!cmd.busy_timeout || !(host->caps & MMC_CAP_WAIT_WHILE_BUSY)) 1848cb962e04SUlf Hansson mmc_delay(timeout_ms); 184907a68216SUlf Hansson 1850436f8daaSAdrian Hunter out_release: 1851436f8daaSAdrian Hunter mmc_retune_release(host); 185207a68216SUlf Hansson return err; 185307a68216SUlf Hansson } 185407a68216SUlf Hansson 1855e6c08586SUlf Hansson static int mmc_can_poweroff_notify(const struct mmc_card *card) 1856e6c08586SUlf Hansson { 1857e6c08586SUlf Hansson return card && 1858e6c08586SUlf Hansson mmc_card_mmc(card) && 1859e6c08586SUlf Hansson (card->ext_csd.power_off_notification == EXT_CSD_POWER_ON); 1860e6c08586SUlf Hansson } 1861e6c08586SUlf Hansson 1862e6c08586SUlf Hansson static int mmc_poweroff_notify(struct mmc_card *card, unsigned int notify_type) 1863e6c08586SUlf Hansson { 1864e6c08586SUlf Hansson unsigned int timeout = card->ext_csd.generic_cmd6_time; 1865e6c08586SUlf Hansson int err; 1866e6c08586SUlf Hansson 1867e6c08586SUlf Hansson /* Use EXT_CSD_POWER_OFF_SHORT as default notification type. */ 1868e6c08586SUlf Hansson if (notify_type == EXT_CSD_POWER_OFF_LONG) 1869e6c08586SUlf Hansson timeout = card->ext_csd.power_off_longtime; 1870e6c08586SUlf Hansson 1871878e200bSUlf Hansson err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1872e6c08586SUlf Hansson EXT_CSD_POWER_OFF_NOTIFICATION, 1873aa33ce3cSUlf Hansson notify_type, timeout, 0, true, false, false); 1874e6c08586SUlf Hansson if (err) 1875e6c08586SUlf Hansson pr_err("%s: Power Off Notification timed out, %u\n", 1876e6c08586SUlf Hansson mmc_hostname(card->host), timeout); 1877e6c08586SUlf Hansson 1878e6c08586SUlf Hansson /* Disable the power off notification after the switch operation. */ 1879e6c08586SUlf Hansson card->ext_csd.power_off_notification = EXT_CSD_NO_POWER_NOTIFICATION; 1880e6c08586SUlf Hansson 1881e6c08586SUlf Hansson return err; 1882e6c08586SUlf Hansson } 1883e6c08586SUlf Hansson 18846abaa0c9SPierre Ossman /* 18856abaa0c9SPierre Ossman * Host is being removed. Free up the current card. 18866abaa0c9SPierre Ossman */ 18876abaa0c9SPierre Ossman static void mmc_remove(struct mmc_host *host) 18886abaa0c9SPierre Ossman { 18896abaa0c9SPierre Ossman mmc_remove_card(host->card); 18906abaa0c9SPierre Ossman host->card = NULL; 18916abaa0c9SPierre Ossman } 18926abaa0c9SPierre Ossman 18936abaa0c9SPierre Ossman /* 1894d3049504SAdrian Hunter * Card detection - card is alive. 1895d3049504SAdrian Hunter */ 1896d3049504SAdrian Hunter static int mmc_alive(struct mmc_host *host) 1897d3049504SAdrian Hunter { 1898d3049504SAdrian Hunter return mmc_send_status(host->card, NULL); 1899d3049504SAdrian Hunter } 1900d3049504SAdrian Hunter 1901d3049504SAdrian Hunter /* 19026abaa0c9SPierre Ossman * Card detection callback from host. 19036abaa0c9SPierre Ossman */ 19046abaa0c9SPierre Ossman static void mmc_detect(struct mmc_host *host) 19056abaa0c9SPierre Ossman { 19066abaa0c9SPierre Ossman int err; 19076abaa0c9SPierre Ossman 1908e94cfef6SUlf Hansson mmc_get_card(host->card); 19096abaa0c9SPierre Ossman 19106abaa0c9SPierre Ossman /* 19116abaa0c9SPierre Ossman * Just check if our card has been removed. 19126abaa0c9SPierre Ossman */ 1913d3049504SAdrian Hunter err = _mmc_detect_card_removed(host); 19146abaa0c9SPierre Ossman 1915e94cfef6SUlf Hansson mmc_put_card(host->card); 19167ea239d9SPierre Ossman 191717b0429dSPierre Ossman if (err) { 19184101c16aSPierre Ossman mmc_remove(host); 19196abaa0c9SPierre Ossman 19206abaa0c9SPierre Ossman mmc_claim_host(host); 19216abaa0c9SPierre Ossman mmc_detach_bus(host); 19227f7e4129SUlf Hansson mmc_power_off(host); 19236abaa0c9SPierre Ossman mmc_release_host(host); 19246abaa0c9SPierre Ossman } 19256abaa0c9SPierre Ossman } 19266abaa0c9SPierre Ossman 192703d071fcSUlf Hansson static int _mmc_suspend(struct mmc_host *host, bool is_suspend) 19286abaa0c9SPierre Ossman { 1929c3805467SBalaji T K int err = 0; 193003d071fcSUlf Hansson unsigned int notify_type = is_suspend ? EXT_CSD_POWER_OFF_SHORT : 193103d071fcSUlf Hansson EXT_CSD_POWER_OFF_LONG; 1932c3805467SBalaji T K 19336abaa0c9SPierre Ossman mmc_claim_host(host); 1934881d926dSMaya Erez 19359ec775f7SUlf Hansson if (mmc_card_suspended(host->card)) 19369ec775f7SUlf Hansson goto out; 19379ec775f7SUlf Hansson 193839b9431bSUlf Hansson if (mmc_card_doing_bkops(host->card)) { 193939b9431bSUlf Hansson err = mmc_stop_bkops(host->card); 194039b9431bSUlf Hansson if (err) 194139b9431bSUlf Hansson goto out; 194239b9431bSUlf Hansson } 194339b9431bSUlf Hansson 194410e5d965SUlf Hansson err = mmc_flush_cache(host->card); 1945881d926dSMaya Erez if (err) 1946881d926dSMaya Erez goto out; 1947881d926dSMaya Erez 194843235679SUlf Hansson if (mmc_can_poweroff_notify(host->card) && 194953275c21SUlf Hansson ((host->caps2 & MMC_CAP2_FULL_PWR_CYCLE) || !is_suspend)) 195003d071fcSUlf Hansson err = mmc_poweroff_notify(host->card, notify_type); 195107a68216SUlf Hansson else if (mmc_can_sleep(host->card)) 195207a68216SUlf Hansson err = mmc_sleep(host); 1953e6c08586SUlf Hansson else if (!mmc_host_is_spi(host)) 195485e727edSJaehoon Chung err = mmc_deselect_cards(host); 195595cdfb72SNicolas Pitre 19569ec775f7SUlf Hansson if (!err) { 195774590263SUlf Hansson mmc_power_off(host); 19589ec775f7SUlf Hansson mmc_card_set_suspended(host->card); 19599ec775f7SUlf Hansson } 1960881d926dSMaya Erez out: 1961881d926dSMaya Erez mmc_release_host(host); 1962c3805467SBalaji T K return err; 19636abaa0c9SPierre Ossman } 19646abaa0c9SPierre Ossman 19656abaa0c9SPierre Ossman /* 19660cb403a2SUlf Hansson * Suspend callback 196703d071fcSUlf Hansson */ 196803d071fcSUlf Hansson static int mmc_suspend(struct mmc_host *host) 196903d071fcSUlf Hansson { 19700cb403a2SUlf Hansson int err; 19710cb403a2SUlf Hansson 19720cb403a2SUlf Hansson err = _mmc_suspend(host, true); 19730cb403a2SUlf Hansson if (!err) { 19740cb403a2SUlf Hansson pm_runtime_disable(&host->card->dev); 19750cb403a2SUlf Hansson pm_runtime_set_suspended(&host->card->dev); 19760cb403a2SUlf Hansson } 19770cb403a2SUlf Hansson 19780cb403a2SUlf Hansson return err; 197903d071fcSUlf Hansson } 198003d071fcSUlf Hansson 198103d071fcSUlf Hansson /* 19826abaa0c9SPierre Ossman * This function tries to determine if the same card is still present 19836abaa0c9SPierre Ossman * and, if so, restore all state to it. 19846abaa0c9SPierre Ossman */ 19850cb403a2SUlf Hansson static int _mmc_resume(struct mmc_host *host) 19866abaa0c9SPierre Ossman { 19879ec775f7SUlf Hansson int err = 0; 19886abaa0c9SPierre Ossman 19896abaa0c9SPierre Ossman mmc_claim_host(host); 19909ec775f7SUlf Hansson 19919ec775f7SUlf Hansson if (!mmc_card_suspended(host->card)) 19929ec775f7SUlf Hansson goto out; 19939ec775f7SUlf Hansson 199469041150SUlf Hansson mmc_power_up(host, host->card->ocr); 199569041150SUlf Hansson err = mmc_init_card(host, host->card->ocr, host->card); 19969ec775f7SUlf Hansson mmc_card_clr_suspended(host->card); 19972986d0bfSPierre Ossman 19989ec775f7SUlf Hansson out: 19999ec775f7SUlf Hansson mmc_release_host(host); 200095cdfb72SNicolas Pitre return err; 20016abaa0c9SPierre Ossman } 20026abaa0c9SPierre Ossman 20039ec775f7SUlf Hansson /* 20049ec775f7SUlf Hansson * Shutdown callback 20059ec775f7SUlf Hansson */ 20069ec775f7SUlf Hansson static int mmc_shutdown(struct mmc_host *host) 20079ec775f7SUlf Hansson { 20089ec775f7SUlf Hansson int err = 0; 20099ec775f7SUlf Hansson 20109ec775f7SUlf Hansson /* 20119ec775f7SUlf Hansson * In a specific case for poweroff notify, we need to resume the card 20129ec775f7SUlf Hansson * before we can shutdown it properly. 20139ec775f7SUlf Hansson */ 20149ec775f7SUlf Hansson if (mmc_can_poweroff_notify(host->card) && 20159ec775f7SUlf Hansson !(host->caps2 & MMC_CAP2_FULL_PWR_CYCLE)) 20160cb403a2SUlf Hansson err = _mmc_resume(host); 20179ec775f7SUlf Hansson 20189ec775f7SUlf Hansson if (!err) 20199ec775f7SUlf Hansson err = _mmc_suspend(host, false); 20209ec775f7SUlf Hansson 20219ec775f7SUlf Hansson return err; 20229ec775f7SUlf Hansson } 2023c4d770d7SUlf Hansson 2024c4d770d7SUlf Hansson /* 20250cb403a2SUlf Hansson * Callback for resume. 20260cb403a2SUlf Hansson */ 20270cb403a2SUlf Hansson static int mmc_resume(struct mmc_host *host) 20280cb403a2SUlf Hansson { 20290cb403a2SUlf Hansson pm_runtime_enable(&host->card->dev); 2030c29536e8SUlf Hansson return 0; 20310cb403a2SUlf Hansson } 20320cb403a2SUlf Hansson 20330cb403a2SUlf Hansson /* 2034c4d770d7SUlf Hansson * Callback for runtime_suspend. 2035c4d770d7SUlf Hansson */ 2036c4d770d7SUlf Hansson static int mmc_runtime_suspend(struct mmc_host *host) 2037c4d770d7SUlf Hansson { 2038c4d770d7SUlf Hansson int err; 2039c4d770d7SUlf Hansson 2040c4d770d7SUlf Hansson if (!(host->caps & MMC_CAP_AGGRESSIVE_PM)) 2041c4d770d7SUlf Hansson return 0; 2042c4d770d7SUlf Hansson 20430cb403a2SUlf Hansson err = _mmc_suspend(host, true); 20440cc81a8cSUlf Hansson if (err) 2045f42cf8d6SMasanari Iida pr_err("%s: error %d doing aggressive suspend\n", 2046c4d770d7SUlf Hansson mmc_hostname(host), err); 2047c4d770d7SUlf Hansson 2048c4d770d7SUlf Hansson return err; 2049c4d770d7SUlf Hansson } 2050c4d770d7SUlf Hansson 2051c4d770d7SUlf Hansson /* 2052c4d770d7SUlf Hansson * Callback for runtime_resume. 2053c4d770d7SUlf Hansson */ 2054c4d770d7SUlf Hansson static int mmc_runtime_resume(struct mmc_host *host) 2055c4d770d7SUlf Hansson { 2056c4d770d7SUlf Hansson int err; 2057c4d770d7SUlf Hansson 20580cb403a2SUlf Hansson err = _mmc_resume(host); 2059520322d9SAdrian Hunter if (err && err != -ENOMEDIUM) 2060c29536e8SUlf Hansson pr_err("%s: error %d doing runtime resume\n", 2061c4d770d7SUlf Hansson mmc_hostname(host), err); 2062c4d770d7SUlf Hansson 2063c4d770d7SUlf Hansson return 0; 2064c4d770d7SUlf Hansson } 2065c4d770d7SUlf Hansson 2066f855a371SJohan Rudholm int mmc_can_reset(struct mmc_card *card) 2067f855a371SJohan Rudholm { 2068f855a371SJohan Rudholm u8 rst_n_function; 2069f855a371SJohan Rudholm 2070f855a371SJohan Rudholm rst_n_function = card->ext_csd.rst_n_function; 2071f855a371SJohan Rudholm if ((rst_n_function & EXT_CSD_RST_N_EN_MASK) != EXT_CSD_RST_N_ENABLED) 2072f855a371SJohan Rudholm return 0; 2073f855a371SJohan Rudholm return 1; 2074f855a371SJohan Rudholm } 2075f855a371SJohan Rudholm EXPORT_SYMBOL(mmc_can_reset); 2076f855a371SJohan Rudholm 2077f855a371SJohan Rudholm static int mmc_reset(struct mmc_host *host) 2078f855a371SJohan Rudholm { 2079f855a371SJohan Rudholm struct mmc_card *card = host->card; 2080f855a371SJohan Rudholm 2081437db4c6SAdrian Hunter /* 2082437db4c6SAdrian Hunter * In the case of recovery, we can't expect flushing the cache to work 2083437db4c6SAdrian Hunter * always, but we have a go and ignore errors. 2084437db4c6SAdrian Hunter */ 2085437db4c6SAdrian Hunter mmc_flush_cache(host->card); 2086437db4c6SAdrian Hunter 20874e6c7178SGwendal Grignou if ((host->caps & MMC_CAP_HW_RESET) && host->ops->hw_reset && 20884e6c7178SGwendal Grignou mmc_can_reset(card)) { 20894e6c7178SGwendal Grignou /* If the card accept RST_n signal, send it. */ 2090f855a371SJohan Rudholm mmc_set_clock(host, host->f_init); 2091f855a371SJohan Rudholm host->ops->hw_reset(host); 2092f855a371SJohan Rudholm /* Set initial state and call mmc_set_ios */ 2093f855a371SJohan Rudholm mmc_set_initial_state(host); 20944e6c7178SGwendal Grignou } else { 20954e6c7178SGwendal Grignou /* Do a brute force power cycle */ 20964e6c7178SGwendal Grignou mmc_power_cycle(host, card->ocr); 20974e6c7178SGwendal Grignou } 2098364549ddSUlf Hansson return mmc_init_card(host, card->ocr, card); 2099f855a371SJohan Rudholm } 2100f855a371SJohan Rudholm 21019feae246SAdrian Hunter static const struct mmc_bus_ops mmc_ops = { 21029feae246SAdrian Hunter .remove = mmc_remove, 21039feae246SAdrian Hunter .detect = mmc_detect, 21049feae246SAdrian Hunter .suspend = mmc_suspend, 21059feae246SAdrian Hunter .resume = mmc_resume, 2106c4d770d7SUlf Hansson .runtime_suspend = mmc_runtime_suspend, 2107c4d770d7SUlf Hansson .runtime_resume = mmc_runtime_resume, 2108d3049504SAdrian Hunter .alive = mmc_alive, 2109486fdbbcSUlf Hansson .shutdown = mmc_shutdown, 2110f855a371SJohan Rudholm .reset = mmc_reset, 21119feae246SAdrian Hunter }; 21129feae246SAdrian Hunter 21136abaa0c9SPierre Ossman /* 21146abaa0c9SPierre Ossman * Starting point for MMC card init. 21156abaa0c9SPierre Ossman */ 2116807e8e40SAndy Ross int mmc_attach_mmc(struct mmc_host *host) 21176abaa0c9SPierre Ossman { 21186abaa0c9SPierre Ossman int err; 211969041150SUlf Hansson u32 ocr, rocr; 21206abaa0c9SPierre Ossman 2121d84075c8SPierre Ossman WARN_ON(!host->claimed); 21226abaa0c9SPierre Ossman 212344669034SStefan Nilsson XK /* Set correct bus mode for MMC before attempting attach */ 212444669034SStefan Nilsson XK if (!mmc_host_is_spi(host)) 212544669034SStefan Nilsson XK mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); 212644669034SStefan Nilsson XK 2127807e8e40SAndy Ross err = mmc_send_op_cond(host, 0, &ocr); 2128807e8e40SAndy Ross if (err) 2129807e8e40SAndy Ross return err; 2130807e8e40SAndy Ross 21312501c917SUlf Hansson mmc_attach_bus(host, &mmc_ops); 21328f230f45STakashi Iwai if (host->ocr_avail_mmc) 21338f230f45STakashi Iwai host->ocr_avail = host->ocr_avail_mmc; 21346abaa0c9SPierre Ossman 21356abaa0c9SPierre Ossman /* 2136af517150SDavid Brownell * We need to get OCR a different way for SPI. 2137af517150SDavid Brownell */ 2138af517150SDavid Brownell if (mmc_host_is_spi(host)) { 2139af517150SDavid Brownell err = mmc_spi_read_ocr(host, 1, &ocr); 2140af517150SDavid Brownell if (err) 2141af517150SDavid Brownell goto err; 2142af517150SDavid Brownell } 2143af517150SDavid Brownell 214469041150SUlf Hansson rocr = mmc_select_voltage(host, ocr); 21456abaa0c9SPierre Ossman 21466abaa0c9SPierre Ossman /* 21476abaa0c9SPierre Ossman * Can we support the voltage of the card? 21486abaa0c9SPierre Ossman */ 214969041150SUlf Hansson if (!rocr) { 2150109b5bedSPierre Ossman err = -EINVAL; 21516abaa0c9SPierre Ossman goto err; 2152109b5bedSPierre Ossman } 21536abaa0c9SPierre Ossman 21546abaa0c9SPierre Ossman /* 21556abaa0c9SPierre Ossman * Detect and init the card. 21566abaa0c9SPierre Ossman */ 215769041150SUlf Hansson err = mmc_init_card(host, rocr, NULL); 215817b0429dSPierre Ossman if (err) 21596abaa0c9SPierre Ossman goto err; 21606abaa0c9SPierre Ossman 21616abaa0c9SPierre Ossman mmc_release_host(host); 21624101c16aSPierre Ossman err = mmc_add_card(host->card); 21637ea239d9SPierre Ossman if (err) 21642986d0bfSPierre Ossman goto remove_card; 21657ea239d9SPierre Ossman 21662860d060SSergei Shtylyov mmc_claim_host(host); 21677ea239d9SPierre Ossman return 0; 21687ea239d9SPierre Ossman 21692986d0bfSPierre Ossman remove_card: 21706abaa0c9SPierre Ossman mmc_remove_card(host->card); 21712986d0bfSPierre Ossman mmc_claim_host(host); 2172807e8e40SAndy Ross host->card = NULL; 21737ea239d9SPierre Ossman err: 21747ea239d9SPierre Ossman mmc_detach_bus(host); 21757ea239d9SPierre Ossman 2176a3c76eb9SGirish K S pr_err("%s: error %d whilst initialising MMC card\n", 2177109b5bedSPierre Ossman mmc_hostname(host), err); 2178109b5bedSPierre Ossman 2179adf66a0dSPierre Ossman return err; 21807ea239d9SPierre Ossman } 2181