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" 244facdde1SUlf Hansson #include "card.h" 25436f8daaSAdrian Hunter #include "host.h" 264101c16aSPierre Ossman #include "bus.h" 277ea239d9SPierre Ossman #include "mmc_ops.h" 284c4cb171SPhilip Rakity #include "sd_ops.h" 297ea239d9SPierre Ossman 30fe1b5700SUlf Hansson #define DEFAULT_CMD6_TIMEOUT_MS 500 31fe1b5700SUlf Hansson 327ea239d9SPierre Ossman static const unsigned int tran_exp[] = { 337ea239d9SPierre Ossman 10000, 100000, 1000000, 10000000, 347ea239d9SPierre Ossman 0, 0, 0, 0 357ea239d9SPierre Ossman }; 367ea239d9SPierre Ossman 377ea239d9SPierre Ossman static const unsigned char tran_mant[] = { 387ea239d9SPierre Ossman 0, 10, 12, 13, 15, 20, 25, 30, 397ea239d9SPierre Ossman 35, 40, 45, 50, 55, 60, 70, 80, 407ea239d9SPierre Ossman }; 417ea239d9SPierre Ossman 427ea239d9SPierre Ossman static const unsigned int tacc_exp[] = { 437ea239d9SPierre Ossman 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, 447ea239d9SPierre Ossman }; 457ea239d9SPierre Ossman 467ea239d9SPierre Ossman static const unsigned int tacc_mant[] = { 477ea239d9SPierre Ossman 0, 10, 12, 13, 15, 20, 25, 30, 487ea239d9SPierre Ossman 35, 40, 45, 50, 55, 60, 70, 80, 497ea239d9SPierre Ossman }; 507ea239d9SPierre Ossman 515320226aSPratibhasagar V static const struct mmc_fixup mmc_ext_csd_fixups[] = { 525320226aSPratibhasagar V /* 535320226aSPratibhasagar V * Certain Hynix eMMC 4.41 cards might get broken when HPI feature 545320226aSPratibhasagar V * is used so disable the HPI feature for such buggy cards. 555320226aSPratibhasagar V */ 565320226aSPratibhasagar V MMC_FIXUP_EXT_CSD_REV(CID_NAME_ANY, CID_MANFID_HYNIX, 575320226aSPratibhasagar V 0x014a, add_quirk, MMC_QUIRK_BROKEN_HPI, 5), 585320226aSPratibhasagar V 595320226aSPratibhasagar V END_FIXUP 605320226aSPratibhasagar V }; 615320226aSPratibhasagar V 627ea239d9SPierre Ossman #define UNSTUFF_BITS(resp,start,size) \ 637ea239d9SPierre Ossman ({ \ 647ea239d9SPierre Ossman const int __size = size; \ 657ea239d9SPierre Ossman const u32 __mask = (__size < 32 ? 1 << __size : 0) - 1; \ 667ea239d9SPierre Ossman const int __off = 3 - ((start) / 32); \ 677ea239d9SPierre Ossman const int __shft = (start) & 31; \ 687ea239d9SPierre Ossman u32 __res; \ 697ea239d9SPierre Ossman \ 707ea239d9SPierre Ossman __res = resp[__off] >> __shft; \ 717ea239d9SPierre Ossman if (__size + __shft > 32) \ 727ea239d9SPierre Ossman __res |= resp[__off-1] << ((32 - __shft) % 32); \ 737ea239d9SPierre Ossman __res & __mask; \ 747ea239d9SPierre Ossman }) 757ea239d9SPierre Ossman 767ea239d9SPierre Ossman /* 777ea239d9SPierre Ossman * Given the decoded CSD structure, decode the raw CID to our CID structure. 787ea239d9SPierre Ossman */ 79bd766312SPierre Ossman static int mmc_decode_cid(struct mmc_card *card) 807ea239d9SPierre Ossman { 817ea239d9SPierre Ossman u32 *resp = card->raw_cid; 827ea239d9SPierre Ossman 837ea239d9SPierre Ossman /* 847ea239d9SPierre Ossman * The selection of the format here is based upon published 857ea239d9SPierre Ossman * specs from sandisk and from what people have reported. 867ea239d9SPierre Ossman */ 877ea239d9SPierre Ossman switch (card->csd.mmca_vsn) { 887ea239d9SPierre Ossman case 0: /* MMC v1.0 - v1.2 */ 897ea239d9SPierre Ossman case 1: /* MMC v1.4 */ 907ea239d9SPierre Ossman card->cid.manfid = UNSTUFF_BITS(resp, 104, 24); 917ea239d9SPierre Ossman card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); 927ea239d9SPierre Ossman card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); 937ea239d9SPierre Ossman card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); 947ea239d9SPierre Ossman card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); 957ea239d9SPierre Ossman card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); 967ea239d9SPierre Ossman card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); 977ea239d9SPierre Ossman card->cid.prod_name[6] = UNSTUFF_BITS(resp, 48, 8); 987ea239d9SPierre Ossman card->cid.hwrev = UNSTUFF_BITS(resp, 44, 4); 997ea239d9SPierre Ossman card->cid.fwrev = UNSTUFF_BITS(resp, 40, 4); 1007ea239d9SPierre Ossman card->cid.serial = UNSTUFF_BITS(resp, 16, 24); 1017ea239d9SPierre Ossman card->cid.month = UNSTUFF_BITS(resp, 12, 4); 1027ea239d9SPierre Ossman card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; 1037ea239d9SPierre Ossman break; 1047ea239d9SPierre Ossman 1057ea239d9SPierre Ossman case 2: /* MMC v2.0 - v2.2 */ 1067ea239d9SPierre Ossman case 3: /* MMC v3.1 - v3.3 */ 1077ea239d9SPierre Ossman case 4: /* MMC v4 */ 1087ea239d9SPierre Ossman card->cid.manfid = UNSTUFF_BITS(resp, 120, 8); 1097ea239d9SPierre Ossman card->cid.oemid = UNSTUFF_BITS(resp, 104, 16); 1107ea239d9SPierre Ossman card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); 1117ea239d9SPierre Ossman card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); 1127ea239d9SPierre Ossman card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); 1137ea239d9SPierre Ossman card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); 1147ea239d9SPierre Ossman card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); 1157ea239d9SPierre Ossman card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); 11651e7e8b6SBernie Thompson card->cid.prv = UNSTUFF_BITS(resp, 48, 8); 1177ea239d9SPierre Ossman card->cid.serial = UNSTUFF_BITS(resp, 16, 32); 1187ea239d9SPierre Ossman card->cid.month = UNSTUFF_BITS(resp, 12, 4); 1197ea239d9SPierre Ossman card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; 1207ea239d9SPierre Ossman break; 1217ea239d9SPierre Ossman 1227ea239d9SPierre Ossman default: 123a3c76eb9SGirish K S pr_err("%s: card has unknown MMCA version %d\n", 1247ea239d9SPierre Ossman mmc_hostname(card->host), card->csd.mmca_vsn); 125bd766312SPierre Ossman return -EINVAL; 1267ea239d9SPierre Ossman } 127bd766312SPierre Ossman 128bd766312SPierre Ossman return 0; 1297ea239d9SPierre Ossman } 1307ea239d9SPierre Ossman 131dfe86cbaSAdrian Hunter static void mmc_set_erase_size(struct mmc_card *card) 132dfe86cbaSAdrian Hunter { 133dfe86cbaSAdrian Hunter if (card->ext_csd.erase_group_def & 1) 134dfe86cbaSAdrian Hunter card->erase_size = card->ext_csd.hc_erase_size; 135dfe86cbaSAdrian Hunter else 136dfe86cbaSAdrian Hunter card->erase_size = card->csd.erase_size; 137dfe86cbaSAdrian Hunter 138dfe86cbaSAdrian Hunter mmc_init_erase(card); 139dfe86cbaSAdrian Hunter } 140dfe86cbaSAdrian Hunter 1417ea239d9SPierre Ossman /* 1427ea239d9SPierre Ossman * Given a 128-bit response, decode to our card CSD structure. 1437ea239d9SPierre Ossman */ 144bd766312SPierre Ossman static int mmc_decode_csd(struct mmc_card *card) 1457ea239d9SPierre Ossman { 1467ea239d9SPierre Ossman struct mmc_csd *csd = &card->csd; 147dfe86cbaSAdrian Hunter unsigned int e, m, a, b; 1487ea239d9SPierre Ossman u32 *resp = card->raw_csd; 1497ea239d9SPierre Ossman 1507ea239d9SPierre Ossman /* 1517ea239d9SPierre Ossman * We only understand CSD structure v1.1 and v1.2. 1527ea239d9SPierre Ossman * v1.2 has extra information in bits 15, 11 and 10. 1536da24b78SKyungmin Park * We also support eMMC v4.4 & v4.41. 1547ea239d9SPierre Ossman */ 1556da24b78SKyungmin Park csd->structure = UNSTUFF_BITS(resp, 126, 2); 1566da24b78SKyungmin Park if (csd->structure == 0) { 157a3c76eb9SGirish K S pr_err("%s: unrecognised CSD structure version %d\n", 1586da24b78SKyungmin Park mmc_hostname(card->host), csd->structure); 159bd766312SPierre Ossman return -EINVAL; 1607ea239d9SPierre Ossman } 1617ea239d9SPierre Ossman 1627ea239d9SPierre Ossman csd->mmca_vsn = UNSTUFF_BITS(resp, 122, 4); 1637ea239d9SPierre Ossman m = UNSTUFF_BITS(resp, 115, 4); 1647ea239d9SPierre Ossman e = UNSTUFF_BITS(resp, 112, 3); 1657ea239d9SPierre Ossman csd->tacc_ns = (tacc_exp[e] * tacc_mant[m] + 9) / 10; 1667ea239d9SPierre Ossman csd->tacc_clks = UNSTUFF_BITS(resp, 104, 8) * 100; 1677ea239d9SPierre Ossman 1687ea239d9SPierre Ossman m = UNSTUFF_BITS(resp, 99, 4); 1697ea239d9SPierre Ossman e = UNSTUFF_BITS(resp, 96, 3); 1707ea239d9SPierre Ossman csd->max_dtr = tran_exp[e] * tran_mant[m]; 1717ea239d9SPierre Ossman csd->cmdclass = UNSTUFF_BITS(resp, 84, 12); 1727ea239d9SPierre Ossman 1737ea239d9SPierre Ossman e = UNSTUFF_BITS(resp, 47, 3); 1747ea239d9SPierre Ossman m = UNSTUFF_BITS(resp, 62, 12); 1757ea239d9SPierre Ossman csd->capacity = (1 + m) << (e + 2); 1767ea239d9SPierre Ossman 1777ea239d9SPierre Ossman csd->read_blkbits = UNSTUFF_BITS(resp, 80, 4); 1787ea239d9SPierre Ossman csd->read_partial = UNSTUFF_BITS(resp, 79, 1); 1797ea239d9SPierre Ossman csd->write_misalign = UNSTUFF_BITS(resp, 78, 1); 1807ea239d9SPierre Ossman csd->read_misalign = UNSTUFF_BITS(resp, 77, 1); 1813d705d14SSascha Hauer csd->dsr_imp = UNSTUFF_BITS(resp, 76, 1); 1827ea239d9SPierre Ossman csd->r2w_factor = UNSTUFF_BITS(resp, 26, 3); 1837ea239d9SPierre Ossman csd->write_blkbits = UNSTUFF_BITS(resp, 22, 4); 1847ea239d9SPierre Ossman csd->write_partial = UNSTUFF_BITS(resp, 21, 1); 185bd766312SPierre Ossman 186dfe86cbaSAdrian Hunter if (csd->write_blkbits >= 9) { 187dfe86cbaSAdrian Hunter a = UNSTUFF_BITS(resp, 42, 5); 188dfe86cbaSAdrian Hunter b = UNSTUFF_BITS(resp, 37, 5); 189dfe86cbaSAdrian Hunter csd->erase_size = (a + 1) * (b + 1); 190dfe86cbaSAdrian Hunter csd->erase_size <<= csd->write_blkbits - 9; 191dfe86cbaSAdrian Hunter } 192dfe86cbaSAdrian Hunter 193bd766312SPierre Ossman return 0; 1947ea239d9SPierre Ossman } 1957ea239d9SPierre Ossman 19696cf5f02SSeungwon Jeon static void mmc_select_card_type(struct mmc_card *card) 19796cf5f02SSeungwon Jeon { 19896cf5f02SSeungwon Jeon struct mmc_host *host = card->host; 1990a5b6438SSeungwon Jeon u8 card_type = card->ext_csd.raw_card_type; 2005f1a4dd0SLee Jones u32 caps = host->caps, caps2 = host->caps2; 201577fb131SSeungwon Jeon unsigned int hs_max_dtr = 0, hs200_max_dtr = 0; 2022415c0efSSeungwon Jeon unsigned int avail_type = 0; 20396cf5f02SSeungwon Jeon 20496cf5f02SSeungwon Jeon if (caps & MMC_CAP_MMC_HIGHSPEED && 2052415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS_26) { 2062415c0efSSeungwon Jeon hs_max_dtr = MMC_HIGH_26_MAX_DTR; 2072415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS_26; 2082415c0efSSeungwon Jeon } 2092415c0efSSeungwon Jeon 2102415c0efSSeungwon Jeon if (caps & MMC_CAP_MMC_HIGHSPEED && 2112415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS_52) { 21296cf5f02SSeungwon Jeon hs_max_dtr = MMC_HIGH_52_MAX_DTR; 2132415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS_52; 2142415c0efSSeungwon Jeon } 21596cf5f02SSeungwon Jeon 21620f921bbSUlf Hansson if (caps & (MMC_CAP_1_8V_DDR | MMC_CAP_3_3V_DDR) && 2172415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_DDR_1_8V) { 21896cf5f02SSeungwon Jeon hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; 2192415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_DDR_1_8V; 2202415c0efSSeungwon Jeon } 22196cf5f02SSeungwon Jeon 2222415c0efSSeungwon Jeon if (caps & MMC_CAP_1_2V_DDR && 2232415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_DDR_1_2V) { 2242415c0efSSeungwon Jeon hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; 2252415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_DDR_1_2V; 2262415c0efSSeungwon Jeon } 2272415c0efSSeungwon Jeon 2282415c0efSSeungwon Jeon if (caps2 & MMC_CAP2_HS200_1_8V_SDR && 2292415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS200_1_8V) { 230577fb131SSeungwon Jeon hs200_max_dtr = MMC_HS200_MAX_DTR; 2312415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS200_1_8V; 2322415c0efSSeungwon Jeon } 2332415c0efSSeungwon Jeon 2342415c0efSSeungwon Jeon if (caps2 & MMC_CAP2_HS200_1_2V_SDR && 2352415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS200_1_2V) { 236577fb131SSeungwon Jeon hs200_max_dtr = MMC_HS200_MAX_DTR; 2372415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS200_1_2V; 2382415c0efSSeungwon Jeon } 23996cf5f02SSeungwon Jeon 2400a5b6438SSeungwon Jeon if (caps2 & MMC_CAP2_HS400_1_8V && 2410a5b6438SSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS400_1_8V) { 2420a5b6438SSeungwon Jeon hs200_max_dtr = MMC_HS200_MAX_DTR; 2430a5b6438SSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS400_1_8V; 2440a5b6438SSeungwon Jeon } 2450a5b6438SSeungwon Jeon 2460a5b6438SSeungwon Jeon if (caps2 & MMC_CAP2_HS400_1_2V && 2470a5b6438SSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS400_1_2V) { 2480a5b6438SSeungwon Jeon hs200_max_dtr = MMC_HS200_MAX_DTR; 2490a5b6438SSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS400_1_2V; 2500a5b6438SSeungwon Jeon } 2510a5b6438SSeungwon Jeon 25281ac2af6SShawn Lin if ((caps2 & MMC_CAP2_HS400_ES) && 25381ac2af6SShawn Lin card->ext_csd.strobe_support && 25481ac2af6SShawn Lin (avail_type & EXT_CSD_CARD_TYPE_HS400)) 25581ac2af6SShawn Lin avail_type |= EXT_CSD_CARD_TYPE_HS400ES; 25681ac2af6SShawn Lin 25796cf5f02SSeungwon Jeon card->ext_csd.hs_max_dtr = hs_max_dtr; 258577fb131SSeungwon Jeon card->ext_csd.hs200_max_dtr = hs200_max_dtr; 2592415c0efSSeungwon Jeon card->mmc_avail_type = avail_type; 26096cf5f02SSeungwon Jeon } 26196cf5f02SSeungwon Jeon 262b4493eeaSGrégory Soutadé static void mmc_manage_enhanced_area(struct mmc_card *card, u8 *ext_csd) 263b4493eeaSGrégory Soutadé { 264994324bbSGrégory Soutadé u8 hc_erase_grp_sz, hc_wp_grp_sz; 265994324bbSGrégory Soutadé 266994324bbSGrégory Soutadé /* 267994324bbSGrégory Soutadé * Disable these attributes by default 268994324bbSGrégory Soutadé */ 269994324bbSGrégory Soutadé card->ext_csd.enhanced_area_offset = -EINVAL; 270994324bbSGrégory Soutadé card->ext_csd.enhanced_area_size = -EINVAL; 271b4493eeaSGrégory Soutadé 272b4493eeaSGrégory Soutadé /* 273b4493eeaSGrégory Soutadé * Enhanced area feature support -- check whether the eMMC 274b4493eeaSGrégory Soutadé * card has the Enhanced area enabled. If so, export enhanced 275b4493eeaSGrégory Soutadé * area offset and size to user by adding sysfs interface. 276b4493eeaSGrégory Soutadé */ 277b4493eeaSGrégory Soutadé if ((ext_csd[EXT_CSD_PARTITION_SUPPORT] & 0x2) && 278b4493eeaSGrégory Soutadé (ext_csd[EXT_CSD_PARTITION_ATTRIBUTE] & 0x1)) { 279994324bbSGrégory Soutadé if (card->ext_csd.partition_setting_completed) { 280b4493eeaSGrégory Soutadé hc_erase_grp_sz = 281b4493eeaSGrégory Soutadé ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 282b4493eeaSGrégory Soutadé hc_wp_grp_sz = 283b4493eeaSGrégory Soutadé ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 284b4493eeaSGrégory Soutadé 285b4493eeaSGrégory Soutadé /* 286b4493eeaSGrégory Soutadé * calculate the enhanced data area offset, in bytes 287b4493eeaSGrégory Soutadé */ 288b4493eeaSGrégory Soutadé card->ext_csd.enhanced_area_offset = 289ded8a5f9SKuninori Morimoto (((unsigned long long)ext_csd[139]) << 24) + 290ded8a5f9SKuninori Morimoto (((unsigned long long)ext_csd[138]) << 16) + 291ded8a5f9SKuninori Morimoto (((unsigned long long)ext_csd[137]) << 8) + 292ded8a5f9SKuninori Morimoto (((unsigned long long)ext_csd[136])); 293b4493eeaSGrégory Soutadé if (mmc_card_blockaddr(card)) 294b4493eeaSGrégory Soutadé card->ext_csd.enhanced_area_offset <<= 9; 295b4493eeaSGrégory Soutadé /* 296b4493eeaSGrégory Soutadé * calculate the enhanced data area size, in kilobytes 297b4493eeaSGrégory Soutadé */ 298b4493eeaSGrégory Soutadé card->ext_csd.enhanced_area_size = 299b4493eeaSGrégory Soutadé (ext_csd[142] << 16) + (ext_csd[141] << 8) + 300b4493eeaSGrégory Soutadé ext_csd[140]; 301b4493eeaSGrégory Soutadé card->ext_csd.enhanced_area_size *= 302b4493eeaSGrégory Soutadé (size_t)(hc_erase_grp_sz * hc_wp_grp_sz); 303b4493eeaSGrégory Soutadé card->ext_csd.enhanced_area_size <<= 9; 304b4493eeaSGrégory Soutadé } else { 305994324bbSGrégory Soutadé pr_warn("%s: defines enhanced area without partition setting complete\n", 306994324bbSGrégory Soutadé mmc_hostname(card->host)); 307994324bbSGrégory Soutadé } 308b4493eeaSGrégory Soutadé } 309b4493eeaSGrégory Soutadé } 310b4493eeaSGrégory Soutadé 3114facdde1SUlf Hansson static void mmc_part_add(struct mmc_card *card, unsigned int size, 3124facdde1SUlf Hansson unsigned int part_cfg, char *name, int idx, bool ro, 3134facdde1SUlf Hansson int area_type) 3144facdde1SUlf Hansson { 3154facdde1SUlf Hansson card->part[card->nr_parts].size = size; 3164facdde1SUlf Hansson card->part[card->nr_parts].part_cfg = part_cfg; 3174facdde1SUlf Hansson sprintf(card->part[card->nr_parts].name, name, idx); 3184facdde1SUlf Hansson card->part[card->nr_parts].force_ro = ro; 3194facdde1SUlf Hansson card->part[card->nr_parts].area_type = area_type; 3204facdde1SUlf Hansson card->nr_parts++; 3214facdde1SUlf Hansson } 3224facdde1SUlf Hansson 323b4493eeaSGrégory Soutadé static void mmc_manage_gp_partitions(struct mmc_card *card, u8 *ext_csd) 324b4493eeaSGrégory Soutadé { 325b4493eeaSGrégory Soutadé int idx; 326994324bbSGrégory Soutadé u8 hc_erase_grp_sz, hc_wp_grp_sz; 327994324bbSGrégory Soutadé unsigned int part_size; 328b4493eeaSGrégory Soutadé 329b4493eeaSGrégory Soutadé /* 330b4493eeaSGrégory Soutadé * General purpose partition feature support -- 331b4493eeaSGrégory Soutadé * If ext_csd has the size of general purpose partitions, 332b4493eeaSGrégory Soutadé * set size, part_cfg, partition name in mmc_part. 333b4493eeaSGrégory Soutadé */ 334b4493eeaSGrégory Soutadé if (ext_csd[EXT_CSD_PARTITION_SUPPORT] & 335b4493eeaSGrégory Soutadé EXT_CSD_PART_SUPPORT_PART_EN) { 336b4493eeaSGrégory Soutadé hc_erase_grp_sz = 337b4493eeaSGrégory Soutadé ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 338b4493eeaSGrégory Soutadé hc_wp_grp_sz = 339b4493eeaSGrégory Soutadé ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 340b4493eeaSGrégory Soutadé 341b4493eeaSGrégory Soutadé for (idx = 0; idx < MMC_NUM_GP_PARTITION; idx++) { 342b4493eeaSGrégory Soutadé if (!ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3] && 343b4493eeaSGrégory Soutadé !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] && 344b4493eeaSGrégory Soutadé !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2]) 345b4493eeaSGrégory Soutadé continue; 346994324bbSGrégory Soutadé if (card->ext_csd.partition_setting_completed == 0) { 347994324bbSGrégory Soutadé pr_warn("%s: has partition size defined without partition complete\n", 348994324bbSGrégory Soutadé mmc_hostname(card->host)); 349994324bbSGrégory Soutadé break; 350994324bbSGrégory Soutadé } 351b4493eeaSGrégory Soutadé part_size = 352b4493eeaSGrégory Soutadé (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2] 353b4493eeaSGrégory Soutadé << 16) + 354b4493eeaSGrégory Soutadé (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] 355b4493eeaSGrégory Soutadé << 8) + 356b4493eeaSGrégory Soutadé ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3]; 357b4493eeaSGrégory Soutadé part_size *= (size_t)(hc_erase_grp_sz * 358b4493eeaSGrégory Soutadé hc_wp_grp_sz); 359b4493eeaSGrégory Soutadé mmc_part_add(card, part_size << 19, 360b4493eeaSGrégory Soutadé EXT_CSD_PART_CONFIG_ACC_GP0 + idx, 361b4493eeaSGrégory Soutadé "gp%d", idx, false, 362b4493eeaSGrégory Soutadé MMC_BLK_DATA_AREA_GP); 363b4493eeaSGrégory Soutadé } 364b4493eeaSGrégory Soutadé } 365b4493eeaSGrégory Soutadé } 366b4493eeaSGrégory Soutadé 3671c447116SAdrian Hunter /* Minimum partition switch timeout in milliseconds */ 3681c447116SAdrian Hunter #define MMC_MIN_PART_SWITCH_TIME 300 3691c447116SAdrian Hunter 37008ee80ccSPhilip Rakity /* 37108ee80ccSPhilip Rakity * Decode extended CSD. 37208ee80ccSPhilip Rakity */ 373076ec38aSUlf Hansson static int mmc_decode_ext_csd(struct mmc_card *card, u8 *ext_csd) 37408ee80ccSPhilip Rakity { 375e0c368d5SNamjae Jeon int err = 0, idx; 376e0c368d5SNamjae Jeon unsigned int part_size; 37781f8a7beSHans de Goede struct device_node *np; 37881f8a7beSHans de Goede bool broken_hpi = false; 37908ee80ccSPhilip Rakity 3806da24b78SKyungmin Park /* Version is coded in the CSD_STRUCTURE byte in the EXT_CSD register */ 381f39b2dd9SPhilip Rakity card->ext_csd.raw_ext_csd_structure = ext_csd[EXT_CSD_STRUCTURE]; 3826da24b78SKyungmin Park if (card->csd.structure == 3) { 383f39b2dd9SPhilip Rakity if (card->ext_csd.raw_ext_csd_structure > 2) { 384a3c76eb9SGirish K S pr_err("%s: unrecognised EXT_CSD structure " 3858fdd8521SPierre Ossman "version %d\n", mmc_hostname(card->host), 386f39b2dd9SPhilip Rakity card->ext_csd.raw_ext_csd_structure); 3876da24b78SKyungmin Park err = -EINVAL; 3886da24b78SKyungmin Park goto out; 3896da24b78SKyungmin Park } 3906da24b78SKyungmin Park } 3916da24b78SKyungmin Park 39281f8a7beSHans de Goede np = mmc_of_find_child_device(card->host, 0); 39381f8a7beSHans de Goede if (np && of_device_is_compatible(np, "mmc-card")) 39481f8a7beSHans de Goede broken_hpi = of_property_read_bool(np, "broken-hpi"); 39581f8a7beSHans de Goede of_node_put(np); 39681f8a7beSHans de Goede 39703a59437SRomain Izard /* 39803a59437SRomain Izard * The EXT_CSD format is meant to be forward compatible. As long 39903a59437SRomain Izard * as CSD_STRUCTURE does not change, all values for EXT_CSD_REV 40003a59437SRomain Izard * are authorized, see JEDEC JESD84-B50 section B.8. 40103a59437SRomain Izard */ 4026da24b78SKyungmin Park card->ext_csd.rev = ext_csd[EXT_CSD_REV]; 403d7604d76SPierre Ossman 4045320226aSPratibhasagar V /* fixup device after ext_csd revision field is updated */ 4055320226aSPratibhasagar V mmc_fixup_device(card, mmc_ext_csd_fixups); 4065320226aSPratibhasagar V 407f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[0] = ext_csd[EXT_CSD_SEC_CNT + 0]; 408f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[1] = ext_csd[EXT_CSD_SEC_CNT + 1]; 409f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[2] = ext_csd[EXT_CSD_SEC_CNT + 2]; 410f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[3] = ext_csd[EXT_CSD_SEC_CNT + 3]; 411b1ebe384SJarkko Lavinen if (card->ext_csd.rev >= 2) { 4127ea239d9SPierre Ossman card->ext_csd.sectors = 4137ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 0] << 0 | 4147ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 1] << 8 | 4157ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 2] << 16 | 4167ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 3] << 24; 417fc8a0985SHanumath Prasad 418fc8a0985SHanumath Prasad /* Cards with density > 2GiB are sector addressed */ 419fc8a0985SHanumath Prasad if (card->ext_csd.sectors > (2u * 1024 * 1024 * 1024) / 512) 4207ea239d9SPierre Ossman mmc_card_set_blockaddr(card); 421d7604d76SPierre Ossman } 42296cf5f02SSeungwon Jeon 42381ac2af6SShawn Lin card->ext_csd.strobe_support = ext_csd[EXT_CSD_STROBE_SUPPORT]; 424f39b2dd9SPhilip Rakity card->ext_csd.raw_card_type = ext_csd[EXT_CSD_CARD_TYPE]; 42596cf5f02SSeungwon Jeon mmc_select_card_type(card); 4267ea239d9SPierre Ossman 427f39b2dd9SPhilip Rakity card->ext_csd.raw_s_a_timeout = ext_csd[EXT_CSD_S_A_TIMEOUT]; 428f39b2dd9SPhilip Rakity card->ext_csd.raw_erase_timeout_mult = 429f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; 430f39b2dd9SPhilip Rakity card->ext_csd.raw_hc_erase_grp_size = 431f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 432b1ebe384SJarkko Lavinen if (card->ext_csd.rev >= 3) { 433b1ebe384SJarkko Lavinen u8 sa_shift = ext_csd[EXT_CSD_S_A_TIMEOUT]; 434371a689fSAndrei Warkentin card->ext_csd.part_config = ext_csd[EXT_CSD_PART_CONFIG]; 435371a689fSAndrei Warkentin 436371a689fSAndrei Warkentin /* EXT_CSD value is in units of 10ms, but we store in ms */ 437371a689fSAndrei Warkentin card->ext_csd.part_time = 10 * ext_csd[EXT_CSD_PART_SWITCH_TIME]; 4381c447116SAdrian Hunter /* Some eMMC set the value too low so set a minimum */ 4391c447116SAdrian Hunter if (card->ext_csd.part_time && 4401c447116SAdrian Hunter card->ext_csd.part_time < MMC_MIN_PART_SWITCH_TIME) 4411c447116SAdrian Hunter card->ext_csd.part_time = MMC_MIN_PART_SWITCH_TIME; 442b1ebe384SJarkko Lavinen 443b1ebe384SJarkko Lavinen /* Sleep / awake timeout in 100ns units */ 444b1ebe384SJarkko Lavinen if (sa_shift > 0 && sa_shift <= 0x17) 445b1ebe384SJarkko Lavinen card->ext_csd.sa_timeout = 446b1ebe384SJarkko Lavinen 1 << ext_csd[EXT_CSD_S_A_TIMEOUT]; 447dfe86cbaSAdrian Hunter card->ext_csd.erase_group_def = 448dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_ERASE_GROUP_DEF]; 449dfe86cbaSAdrian Hunter card->ext_csd.hc_erase_timeout = 300 * 450dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; 451dfe86cbaSAdrian Hunter card->ext_csd.hc_erase_size = 452dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] << 10; 453f4c5522bSAndrei Warkentin 454f4c5522bSAndrei Warkentin card->ext_csd.rel_sectors = ext_csd[EXT_CSD_REL_WR_SEC_C]; 455371a689fSAndrei Warkentin 456371a689fSAndrei Warkentin /* 457371a689fSAndrei Warkentin * There are two boot regions of equal size, defined in 458371a689fSAndrei Warkentin * multiples of 128K. 459371a689fSAndrei Warkentin */ 460e0c368d5SNamjae Jeon if (ext_csd[EXT_CSD_BOOT_MULT] && mmc_boot_partition_access(card->host)) { 461e0c368d5SNamjae Jeon for (idx = 0; idx < MMC_NUM_BOOT_PARTITION; idx++) { 462e0c368d5SNamjae Jeon part_size = ext_csd[EXT_CSD_BOOT_MULT] << 17; 463e0c368d5SNamjae Jeon mmc_part_add(card, part_size, 464e0c368d5SNamjae Jeon EXT_CSD_PART_CONFIG_ACC_BOOT0 + idx, 465add710eaSJohan Rudholm "boot%d", idx, true, 466add710eaSJohan Rudholm MMC_BLK_DATA_AREA_BOOT); 467e0c368d5SNamjae Jeon } 468e0c368d5SNamjae Jeon } 469b1ebe384SJarkko Lavinen } 470b1ebe384SJarkko Lavinen 471f39b2dd9SPhilip Rakity card->ext_csd.raw_hc_erase_gap_size = 472dd13b4edSJurgen Heeks ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 473f39b2dd9SPhilip Rakity card->ext_csd.raw_sec_trim_mult = 474f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_SEC_TRIM_MULT]; 475f39b2dd9SPhilip Rakity card->ext_csd.raw_sec_erase_mult = 476f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_SEC_ERASE_MULT]; 477f39b2dd9SPhilip Rakity card->ext_csd.raw_sec_feature_support = 478f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; 479f39b2dd9SPhilip Rakity card->ext_csd.raw_trim_mult = 480f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_TRIM_MULT]; 481836dc2feSPhilip Rakity card->ext_csd.raw_partition_support = ext_csd[EXT_CSD_PARTITION_SUPPORT]; 482b097e07fSAdrian Hunter card->ext_csd.raw_driver_strength = ext_csd[EXT_CSD_DRIVER_STRENGTH]; 483dfe86cbaSAdrian Hunter if (card->ext_csd.rev >= 4) { 48469803d4fSGrégory Soutadé if (ext_csd[EXT_CSD_PARTITION_SETTING_COMPLETED] & 48569803d4fSGrégory Soutadé EXT_CSD_PART_SETTING_COMPLETED) 48669803d4fSGrégory Soutadé card->ext_csd.partition_setting_completed = 1; 48769803d4fSGrégory Soutadé else 48869803d4fSGrégory Soutadé card->ext_csd.partition_setting_completed = 0; 48969803d4fSGrégory Soutadé 490b4493eeaSGrégory Soutadé mmc_manage_enhanced_area(card, ext_csd); 491709de99dSChuanxiao Dong 492b4493eeaSGrégory Soutadé mmc_manage_gp_partitions(card, ext_csd); 493e0c368d5SNamjae Jeon 494dfe86cbaSAdrian Hunter card->ext_csd.sec_trim_mult = 495dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_SEC_TRIM_MULT]; 496dfe86cbaSAdrian Hunter card->ext_csd.sec_erase_mult = 497dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_SEC_ERASE_MULT]; 498dfe86cbaSAdrian Hunter card->ext_csd.sec_feature_support = 499dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; 500dfe86cbaSAdrian Hunter card->ext_csd.trim_timeout = 300 * 501dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_TRIM_MULT]; 502add710eaSJohan Rudholm 503add710eaSJohan Rudholm /* 504add710eaSJohan Rudholm * Note that the call to mmc_part_add above defaults to read 505add710eaSJohan Rudholm * only. If this default assumption is changed, the call must 506add710eaSJohan Rudholm * take into account the value of boot_locked below. 507add710eaSJohan Rudholm */ 508add710eaSJohan Rudholm card->ext_csd.boot_ro_lock = ext_csd[EXT_CSD_BOOT_WP]; 509add710eaSJohan Rudholm card->ext_csd.boot_ro_lockable = true; 51060443712SFredrik Soderstedt 51160443712SFredrik Soderstedt /* Save power class values */ 51260443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_52_195 = 51360443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_52_195]; 51460443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_26_195 = 51560443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_26_195]; 51660443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_52_360 = 51760443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_52_360]; 51860443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_26_360 = 51960443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_26_360]; 52060443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_200_195 = 52160443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_200_195]; 52260443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_200_360 = 52360443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_200_360]; 52460443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_ddr_52_195 = 52560443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_DDR_52_195]; 52660443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_ddr_52_360 = 52760443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_DDR_52_360]; 5280a5b6438SSeungwon Jeon card->ext_csd.raw_pwr_cl_ddr_200_360 = 5290a5b6438SSeungwon Jeon ext_csd[EXT_CSD_PWR_CL_DDR_200_360]; 530dfe86cbaSAdrian Hunter } 531dfe86cbaSAdrian Hunter 532b2499518SAdrian Hunter if (card->ext_csd.rev >= 5) { 5337c4f10acSRomain Izard /* Adjust production date as per JEDEC JESD84-B451 */ 5347c4f10acSRomain Izard if (card->cid.year < 2010) 5357c4f10acSRomain Izard card->cid.year += 16; 5367c4f10acSRomain Izard 537950d56acSJaehoon Chung /* check whether the eMMC card supports BKOPS */ 5385320226aSPratibhasagar V if (!mmc_card_broken_hpi(card) && 5395320226aSPratibhasagar V ext_csd[EXT_CSD_BKOPS_SUPPORT] & 0x1) { 540950d56acSJaehoon Chung card->ext_csd.bkops = 1; 5410501be64SAlexey Skidanov card->ext_csd.man_bkops_en = 5420501be64SAlexey Skidanov (ext_csd[EXT_CSD_BKOPS_EN] & 5430501be64SAlexey Skidanov EXT_CSD_MANUAL_BKOPS_MASK); 544950d56acSJaehoon Chung card->ext_csd.raw_bkops_status = 545950d56acSJaehoon Chung ext_csd[EXT_CSD_BKOPS_STATUS]; 5466962c2fbSUri Yanai if (card->ext_csd.man_bkops_en) 5476962c2fbSUri Yanai pr_debug("%s: MAN_BKOPS_EN bit is set\n", 548950d56acSJaehoon Chung mmc_hostname(card->host)); 549efff8e78SUri Yanai card->ext_csd.auto_bkops_en = 550efff8e78SUri Yanai (ext_csd[EXT_CSD_BKOPS_EN] & 551efff8e78SUri Yanai EXT_CSD_AUTO_BKOPS_MASK); 552efff8e78SUri Yanai if (card->ext_csd.auto_bkops_en) 553efff8e78SUri Yanai pr_debug("%s: AUTO_BKOPS_EN bit is set\n", 554efff8e78SUri Yanai mmc_hostname(card->host)); 555950d56acSJaehoon Chung } 556950d56acSJaehoon Chung 557eb0d8f13SJaehoon Chung /* check whether the eMMC card supports HPI */ 5585320226aSPratibhasagar V if (!mmc_card_broken_hpi(card) && 5595320226aSPratibhasagar V !broken_hpi && (ext_csd[EXT_CSD_HPI_FEATURES] & 0x1)) { 560eb0d8f13SJaehoon Chung card->ext_csd.hpi = 1; 561eb0d8f13SJaehoon Chung if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x2) 562eb0d8f13SJaehoon Chung card->ext_csd.hpi_cmd = MMC_STOP_TRANSMISSION; 563eb0d8f13SJaehoon Chung else 564eb0d8f13SJaehoon Chung card->ext_csd.hpi_cmd = MMC_SEND_STATUS; 565eb0d8f13SJaehoon Chung /* 566eb0d8f13SJaehoon Chung * Indicate the maximum timeout to close 567eb0d8f13SJaehoon Chung * a command interrupted by HPI 568eb0d8f13SJaehoon Chung */ 569eb0d8f13SJaehoon Chung card->ext_csd.out_of_int_time = 570eb0d8f13SJaehoon Chung ext_csd[EXT_CSD_OUT_OF_INTERRUPT_TIME] * 10; 571eb0d8f13SJaehoon Chung } 572eb0d8f13SJaehoon Chung 573f4c5522bSAndrei Warkentin card->ext_csd.rel_param = ext_csd[EXT_CSD_WR_REL_PARAM]; 574b2499518SAdrian Hunter card->ext_csd.rst_n_function = ext_csd[EXT_CSD_RST_N_FUNCTION]; 575090d25feSLoic Pallardy 576090d25feSLoic Pallardy /* 577090d25feSLoic Pallardy * RPMB regions are defined in multiples of 128K. 578090d25feSLoic Pallardy */ 579090d25feSLoic Pallardy card->ext_csd.raw_rpmb_size_mult = ext_csd[EXT_CSD_RPMB_MULT]; 580d0123ccaSBalaji T K if (ext_csd[EXT_CSD_RPMB_MULT] && mmc_host_cmd23(card->host)) { 581090d25feSLoic Pallardy mmc_part_add(card, ext_csd[EXT_CSD_RPMB_MULT] << 17, 582090d25feSLoic Pallardy EXT_CSD_PART_CONFIG_ACC_RPMB, 583090d25feSLoic Pallardy "rpmb", 0, false, 584090d25feSLoic Pallardy MMC_BLK_DATA_AREA_RPMB); 585090d25feSLoic Pallardy } 586b2499518SAdrian Hunter } 587f4c5522bSAndrei Warkentin 5885238acbeSAndrei Warkentin card->ext_csd.raw_erased_mem_count = ext_csd[EXT_CSD_ERASED_MEM_CONT]; 589dfe86cbaSAdrian Hunter if (ext_csd[EXT_CSD_ERASED_MEM_CONT]) 590dfe86cbaSAdrian Hunter card->erased_byte = 0xFF; 591dfe86cbaSAdrian Hunter else 592dfe86cbaSAdrian Hunter card->erased_byte = 0x0; 593dfe86cbaSAdrian Hunter 594336c716aSSeungwon Jeon /* eMMC v4.5 or later */ 595fe1b5700SUlf Hansson card->ext_csd.generic_cmd6_time = DEFAULT_CMD6_TIMEOUT_MS; 596bec8726aSGirish K S if (card->ext_csd.rev >= 6) { 597336c716aSSeungwon Jeon card->ext_csd.feature_support |= MMC_DISCARD_FEATURE; 598336c716aSSeungwon Jeon 599b23cf0bdSSeungwon Jeon card->ext_csd.generic_cmd6_time = 10 * 600b23cf0bdSSeungwon Jeon ext_csd[EXT_CSD_GENERIC_CMD6_TIME]; 601bec8726aSGirish K S card->ext_csd.power_off_longtime = 10 * 602bec8726aSGirish K S ext_csd[EXT_CSD_POWER_OFF_LONG_TIME]; 603b23cf0bdSSeungwon Jeon 604881d1c25SSeungwon Jeon card->ext_csd.cache_size = 605881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 0] << 0 | 606881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 1] << 8 | 607881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 2] << 16 | 608881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 3] << 24; 6094265900eSSaugata Das 6104265900eSSaugata Das if (ext_csd[EXT_CSD_DATA_SECTOR_SIZE] == 1) 6114265900eSSaugata Das card->ext_csd.data_sector_size = 4096; 6124265900eSSaugata Das else 6134265900eSSaugata Das card->ext_csd.data_sector_size = 512; 6144265900eSSaugata Das 6154265900eSSaugata Das if ((ext_csd[EXT_CSD_DATA_TAG_SUPPORT] & 1) && 6164265900eSSaugata Das (ext_csd[EXT_CSD_TAG_UNIT_SIZE] <= 8)) { 6174265900eSSaugata Das card->ext_csd.data_tag_unit_size = 6184265900eSSaugata Das ((unsigned int) 1 << ext_csd[EXT_CSD_TAG_UNIT_SIZE]) * 6194265900eSSaugata Das (card->ext_csd.data_sector_size); 6204265900eSSaugata Das } else { 6214265900eSSaugata Das card->ext_csd.data_tag_unit_size = 0; 6224265900eSSaugata Das } 623abd9ac14SSeungwon Jeon 624abd9ac14SSeungwon Jeon card->ext_csd.max_packed_writes = 625abd9ac14SSeungwon Jeon ext_csd[EXT_CSD_MAX_PACKED_WRITES]; 626abd9ac14SSeungwon Jeon card->ext_csd.max_packed_reads = 627abd9ac14SSeungwon Jeon ext_csd[EXT_CSD_MAX_PACKED_READS]; 628a5075eb9SSaugata Das } else { 629a5075eb9SSaugata Das card->ext_csd.data_sector_size = 512; 630336c716aSSeungwon Jeon } 631881d1c25SSeungwon Jeon 6320f762426SGwendal Grignou /* eMMC v5 or later */ 6330f762426SGwendal Grignou if (card->ext_csd.rev >= 7) { 6340f762426SGwendal Grignou memcpy(card->ext_csd.fwrev, &ext_csd[EXT_CSD_FIRMWARE_VERSION], 6350f762426SGwendal Grignou MMC_FIRMWARE_LEN); 6360f762426SGwendal Grignou card->ext_csd.ffu_capable = 6370f762426SGwendal Grignou (ext_csd[EXT_CSD_SUPPORTED_MODE] & 0x1) && 6380f762426SGwendal Grignou !(ext_csd[EXT_CSD_FW_CONFIG] & 0x1); 63946bc5c40SJungseung Lee 64046bc5c40SJungseung Lee card->ext_csd.pre_eol_info = ext_csd[EXT_CSD_PRE_EOL_INFO]; 64146bc5c40SJungseung Lee card->ext_csd.device_life_time_est_typ_a = 64246bc5c40SJungseung Lee ext_csd[EXT_CSD_DEVICE_LIFE_TIME_EST_TYP_A]; 64346bc5c40SJungseung Lee card->ext_csd.device_life_time_est_typ_b = 64446bc5c40SJungseung Lee ext_csd[EXT_CSD_DEVICE_LIFE_TIME_EST_TYP_B]; 6450f762426SGwendal Grignou } 646925ff3a7SAdrian Hunter 647925ff3a7SAdrian Hunter /* eMMC v5.1 or later */ 648925ff3a7SAdrian Hunter if (card->ext_csd.rev >= 8) { 649925ff3a7SAdrian Hunter card->ext_csd.cmdq_support = ext_csd[EXT_CSD_CMDQ_SUPPORT] & 650925ff3a7SAdrian Hunter EXT_CSD_CMDQ_SUPPORTED; 651925ff3a7SAdrian Hunter card->ext_csd.cmdq_depth = (ext_csd[EXT_CSD_CMDQ_DEPTH] & 652925ff3a7SAdrian Hunter EXT_CSD_CMDQ_DEPTH_MASK) + 1; 653925ff3a7SAdrian Hunter /* Exclude inefficiently small queue depths */ 654925ff3a7SAdrian Hunter if (card->ext_csd.cmdq_depth <= 2) { 655925ff3a7SAdrian Hunter card->ext_csd.cmdq_support = false; 656925ff3a7SAdrian Hunter card->ext_csd.cmdq_depth = 0; 657925ff3a7SAdrian Hunter } 658925ff3a7SAdrian Hunter if (card->ext_csd.cmdq_support) { 659925ff3a7SAdrian Hunter pr_debug("%s: Command Queue supported depth %u\n", 660925ff3a7SAdrian Hunter mmc_hostname(card->host), 661925ff3a7SAdrian Hunter card->ext_csd.cmdq_depth); 662925ff3a7SAdrian Hunter } 663925ff3a7SAdrian Hunter } 6647ea239d9SPierre Ossman out: 66508ee80ccSPhilip Rakity return err; 66608ee80ccSPhilip Rakity } 6677ea239d9SPierre Ossman 668076ec38aSUlf Hansson static int mmc_read_ext_csd(struct mmc_card *card) 669076ec38aSUlf Hansson { 670c197787cSUlf Hansson u8 *ext_csd; 671076ec38aSUlf Hansson int err; 672076ec38aSUlf Hansson 673c197787cSUlf Hansson if (!mmc_can_ext_csd(card)) 674c197787cSUlf Hansson return 0; 675c197787cSUlf Hansson 676076ec38aSUlf Hansson err = mmc_get_ext_csd(card, &ext_csd); 677c197787cSUlf Hansson if (err) { 678c197787cSUlf Hansson /* If the host or the card can't do the switch, 679c197787cSUlf Hansson * fail more gracefully. */ 680c197787cSUlf Hansson if ((err != -EINVAL) 681c197787cSUlf Hansson && (err != -ENOSYS) 682c197787cSUlf Hansson && (err != -EFAULT)) 683076ec38aSUlf Hansson return err; 684076ec38aSUlf Hansson 685c197787cSUlf Hansson /* 686c197787cSUlf Hansson * High capacity cards should have this "magic" size 687c197787cSUlf Hansson * stored in their CSD. 688c197787cSUlf Hansson */ 689c197787cSUlf Hansson if (card->csd.capacity == (4096 * 512)) { 690c197787cSUlf Hansson pr_err("%s: unable to read EXT_CSD on a possible high capacity card. Card will be ignored.\n", 691c197787cSUlf Hansson mmc_hostname(card->host)); 692c197787cSUlf Hansson } else { 693c197787cSUlf Hansson pr_warn("%s: unable to read EXT_CSD, performance might suffer\n", 694c197787cSUlf Hansson mmc_hostname(card->host)); 695c197787cSUlf Hansson err = 0; 696c197787cSUlf Hansson } 697c197787cSUlf Hansson 698c197787cSUlf Hansson return err; 699c197787cSUlf Hansson } 700c197787cSUlf Hansson 701076ec38aSUlf Hansson err = mmc_decode_ext_csd(card, ext_csd); 702076ec38aSUlf Hansson kfree(ext_csd); 703076ec38aSUlf Hansson return err; 704076ec38aSUlf Hansson } 705076ec38aSUlf Hansson 706f39b2dd9SPhilip Rakity static int mmc_compare_ext_csds(struct mmc_card *card, unsigned bus_width) 70708ee80ccSPhilip Rakity { 70808ee80ccSPhilip Rakity u8 *bw_ext_csd; 70908ee80ccSPhilip Rakity int err; 71008ee80ccSPhilip Rakity 711f39b2dd9SPhilip Rakity if (bus_width == MMC_BUS_WIDTH_1) 712f39b2dd9SPhilip Rakity return 0; 71308ee80ccSPhilip Rakity 714f39b2dd9SPhilip Rakity err = mmc_get_ext_csd(card, &bw_ext_csd); 715c197787cSUlf Hansson if (err) 716c197787cSUlf Hansson return err; 71708ee80ccSPhilip Rakity 71808ee80ccSPhilip Rakity /* only compare read only fields */ 719dd13b4edSJurgen Heeks err = !((card->ext_csd.raw_partition_support == 72008ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_PARTITION_SUPPORT]) && 721f39b2dd9SPhilip Rakity (card->ext_csd.raw_erased_mem_count == 72208ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_ERASED_MEM_CONT]) && 723f39b2dd9SPhilip Rakity (card->ext_csd.rev == 72408ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_REV]) && 725f39b2dd9SPhilip Rakity (card->ext_csd.raw_ext_csd_structure == 72608ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_STRUCTURE]) && 727f39b2dd9SPhilip Rakity (card->ext_csd.raw_card_type == 72808ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_CARD_TYPE]) && 729f39b2dd9SPhilip Rakity (card->ext_csd.raw_s_a_timeout == 73008ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_S_A_TIMEOUT]) && 731f39b2dd9SPhilip Rakity (card->ext_csd.raw_hc_erase_gap_size == 73208ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_HC_WP_GRP_SIZE]) && 733f39b2dd9SPhilip Rakity (card->ext_csd.raw_erase_timeout_mult == 73408ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]) && 735f39b2dd9SPhilip Rakity (card->ext_csd.raw_hc_erase_grp_size == 73608ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]) && 737f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_trim_mult == 73808ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_TRIM_MULT]) && 739f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_erase_mult == 74008ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_ERASE_MULT]) && 741f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_feature_support == 74208ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]) && 743f39b2dd9SPhilip Rakity (card->ext_csd.raw_trim_mult == 74408ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_TRIM_MULT]) && 745f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[0] == 746f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 0]) && 747f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[1] == 748f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 1]) && 749f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[2] == 750f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 2]) && 751f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[3] == 75260443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_SEC_CNT + 3]) && 75360443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_52_195 == 75460443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_52_195]) && 75560443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_26_195 == 75660443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_26_195]) && 75760443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_52_360 == 75860443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_52_360]) && 75960443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_26_360 == 76060443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_26_360]) && 76160443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_200_195 == 76260443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_200_195]) && 76360443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_200_360 == 76460443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_200_360]) && 76560443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_ddr_52_195 == 76660443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_195]) && 76760443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_ddr_52_360 == 7680a5b6438SSeungwon Jeon bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_360]) && 7690a5b6438SSeungwon Jeon (card->ext_csd.raw_pwr_cl_ddr_200_360 == 7700a5b6438SSeungwon Jeon bw_ext_csd[EXT_CSD_PWR_CL_DDR_200_360])); 7710a5b6438SSeungwon Jeon 77208ee80ccSPhilip Rakity if (err) 77308ee80ccSPhilip Rakity err = -EINVAL; 77408ee80ccSPhilip Rakity 77500b41b58SUlf Hansson kfree(bw_ext_csd); 7767ea239d9SPierre Ossman return err; 7777ea239d9SPierre Ossman } 7787ea239d9SPierre Ossman 77951ec92e2SPierre Ossman MMC_DEV_ATTR(cid, "%08x%08x%08x%08x\n", card->raw_cid[0], card->raw_cid[1], 78051ec92e2SPierre Ossman card->raw_cid[2], card->raw_cid[3]); 78151ec92e2SPierre Ossman MMC_DEV_ATTR(csd, "%08x%08x%08x%08x\n", card->raw_csd[0], card->raw_csd[1], 78251ec92e2SPierre Ossman card->raw_csd[2], card->raw_csd[3]); 78351ec92e2SPierre Ossman MMC_DEV_ATTR(date, "%02d/%04d\n", card->cid.month, card->cid.year); 784dfe86cbaSAdrian Hunter MMC_DEV_ATTR(erase_size, "%u\n", card->erase_size << 9); 785dfe86cbaSAdrian Hunter MMC_DEV_ATTR(preferred_erase_size, "%u\n", card->pref_erase << 9); 7860f762426SGwendal Grignou MMC_DEV_ATTR(ffu_capable, "%d\n", card->ext_csd.ffu_capable); 78751ec92e2SPierre Ossman MMC_DEV_ATTR(hwrev, "0x%x\n", card->cid.hwrev); 78851ec92e2SPierre Ossman MMC_DEV_ATTR(manfid, "0x%06x\n", card->cid.manfid); 78951ec92e2SPierre Ossman MMC_DEV_ATTR(name, "%s\n", card->cid.prod_name); 79051ec92e2SPierre Ossman MMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid); 79151e7e8b6SBernie Thompson MMC_DEV_ATTR(prv, "0x%x\n", card->cid.prv); 79246bc5c40SJungseung Lee MMC_DEV_ATTR(pre_eol_info, "%02x\n", card->ext_csd.pre_eol_info); 79346bc5c40SJungseung Lee MMC_DEV_ATTR(life_time, "0x%02x 0x%02x\n", 79446bc5c40SJungseung Lee card->ext_csd.device_life_time_est_typ_a, 79546bc5c40SJungseung Lee card->ext_csd.device_life_time_est_typ_b); 79651ec92e2SPierre Ossman MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial); 797709de99dSChuanxiao Dong MMC_DEV_ATTR(enhanced_area_offset, "%llu\n", 798709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset); 799709de99dSChuanxiao Dong MMC_DEV_ATTR(enhanced_area_size, "%u\n", card->ext_csd.enhanced_area_size); 800188cc042SLoic Pallardy MMC_DEV_ATTR(raw_rpmb_size_mult, "%#x\n", card->ext_csd.raw_rpmb_size_mult); 801188cc042SLoic Pallardy MMC_DEV_ATTR(rel_sectors, "%#x\n", card->ext_csd.rel_sectors); 8025fb06af7SBojan Prtvar MMC_DEV_ATTR(ocr, "%08x\n", card->ocr); 80351ec92e2SPierre Ossman 8040f762426SGwendal Grignou static ssize_t mmc_fwrev_show(struct device *dev, 8050f762426SGwendal Grignou struct device_attribute *attr, 8060f762426SGwendal Grignou char *buf) 8070f762426SGwendal Grignou { 8080f762426SGwendal Grignou struct mmc_card *card = mmc_dev_to_card(dev); 8090f762426SGwendal Grignou 8100f762426SGwendal Grignou if (card->ext_csd.rev < 7) { 8110f762426SGwendal Grignou return sprintf(buf, "0x%x\n", card->cid.fwrev); 8120f762426SGwendal Grignou } else { 8130f762426SGwendal Grignou return sprintf(buf, "0x%*phN\n", MMC_FIRMWARE_LEN, 8140f762426SGwendal Grignou card->ext_csd.fwrev); 8150f762426SGwendal Grignou } 8160f762426SGwendal Grignou } 8170f762426SGwendal Grignou 8180f762426SGwendal Grignou static DEVICE_ATTR(fwrev, S_IRUGO, mmc_fwrev_show, NULL); 8190f762426SGwendal Grignou 8206825a606SBojan Prtvar static ssize_t mmc_dsr_show(struct device *dev, 8216825a606SBojan Prtvar struct device_attribute *attr, 8226825a606SBojan Prtvar char *buf) 8236825a606SBojan Prtvar { 8246825a606SBojan Prtvar struct mmc_card *card = mmc_dev_to_card(dev); 8256825a606SBojan Prtvar struct mmc_host *host = card->host; 8266825a606SBojan Prtvar 8276825a606SBojan Prtvar if (card->csd.dsr_imp && host->dsr_req) 8286825a606SBojan Prtvar return sprintf(buf, "0x%x\n", host->dsr); 8296825a606SBojan Prtvar else 8306825a606SBojan Prtvar /* return default DSR value */ 8316825a606SBojan Prtvar return sprintf(buf, "0x%x\n", 0x404); 8326825a606SBojan Prtvar } 8336825a606SBojan Prtvar 8346825a606SBojan Prtvar static DEVICE_ATTR(dsr, S_IRUGO, mmc_dsr_show, NULL); 8356825a606SBojan Prtvar 83651ec92e2SPierre Ossman static struct attribute *mmc_std_attrs[] = { 83751ec92e2SPierre Ossman &dev_attr_cid.attr, 83851ec92e2SPierre Ossman &dev_attr_csd.attr, 83951ec92e2SPierre Ossman &dev_attr_date.attr, 840dfe86cbaSAdrian Hunter &dev_attr_erase_size.attr, 841dfe86cbaSAdrian Hunter &dev_attr_preferred_erase_size.attr, 84251ec92e2SPierre Ossman &dev_attr_fwrev.attr, 8430f762426SGwendal Grignou &dev_attr_ffu_capable.attr, 84451ec92e2SPierre Ossman &dev_attr_hwrev.attr, 84551ec92e2SPierre Ossman &dev_attr_manfid.attr, 84651ec92e2SPierre Ossman &dev_attr_name.attr, 84751ec92e2SPierre Ossman &dev_attr_oemid.attr, 84851e7e8b6SBernie Thompson &dev_attr_prv.attr, 84946bc5c40SJungseung Lee &dev_attr_pre_eol_info.attr, 85046bc5c40SJungseung Lee &dev_attr_life_time.attr, 85151ec92e2SPierre Ossman &dev_attr_serial.attr, 852709de99dSChuanxiao Dong &dev_attr_enhanced_area_offset.attr, 853709de99dSChuanxiao Dong &dev_attr_enhanced_area_size.attr, 854188cc042SLoic Pallardy &dev_attr_raw_rpmb_size_mult.attr, 855188cc042SLoic Pallardy &dev_attr_rel_sectors.attr, 8565fb06af7SBojan Prtvar &dev_attr_ocr.attr, 8576825a606SBojan Prtvar &dev_attr_dsr.attr, 85851ec92e2SPierre Ossman NULL, 85951ec92e2SPierre Ossman }; 860d1e58212SAxel Lin ATTRIBUTE_GROUPS(mmc_std); 86151ec92e2SPierre Ossman 86251ec92e2SPierre Ossman static struct device_type mmc_type = { 863d1e58212SAxel Lin .groups = mmc_std_groups, 86451ec92e2SPierre Ossman }; 86551ec92e2SPierre Ossman 8667ea239d9SPierre Ossman /* 867b87d8dbfSGirish K S * Select the PowerClass for the current bus width 868b87d8dbfSGirish K S * If power class is defined for 4/8 bit bus in the 869b87d8dbfSGirish K S * extended CSD register, select it by executing the 870b87d8dbfSGirish K S * mmc_switch command. 871b87d8dbfSGirish K S */ 8722385049dSSeungwon Jeon static int __mmc_select_powerclass(struct mmc_card *card, 87360443712SFredrik Soderstedt unsigned int bus_width) 874b87d8dbfSGirish K S { 8752385049dSSeungwon Jeon struct mmc_host *host = card->host; 8762385049dSSeungwon Jeon struct mmc_ext_csd *ext_csd = &card->ext_csd; 87760443712SFredrik Soderstedt unsigned int pwrclass_val = 0; 8782385049dSSeungwon Jeon int err = 0; 879b87d8dbfSGirish K S 880b87d8dbfSGirish K S switch (1 << host->ios.vdd) { 881b87d8dbfSGirish K S case MMC_VDD_165_195: 8822385049dSSeungwon Jeon if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) 8832385049dSSeungwon Jeon pwrclass_val = ext_csd->raw_pwr_cl_26_195; 8842385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR) 88560443712SFredrik Soderstedt pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? 8862385049dSSeungwon Jeon ext_csd->raw_pwr_cl_52_195 : 8872385049dSSeungwon Jeon ext_csd->raw_pwr_cl_ddr_52_195; 8882385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HS200_MAX_DTR) 8892385049dSSeungwon Jeon pwrclass_val = ext_csd->raw_pwr_cl_200_195; 890b87d8dbfSGirish K S break; 89193fc5a47SSubhash Jadavani case MMC_VDD_27_28: 89293fc5a47SSubhash Jadavani case MMC_VDD_28_29: 89393fc5a47SSubhash Jadavani case MMC_VDD_29_30: 89493fc5a47SSubhash Jadavani case MMC_VDD_30_31: 89593fc5a47SSubhash Jadavani case MMC_VDD_31_32: 896b87d8dbfSGirish K S case MMC_VDD_32_33: 897b87d8dbfSGirish K S case MMC_VDD_33_34: 898b87d8dbfSGirish K S case MMC_VDD_34_35: 899b87d8dbfSGirish K S case MMC_VDD_35_36: 9002385049dSSeungwon Jeon if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) 9012385049dSSeungwon Jeon pwrclass_val = ext_csd->raw_pwr_cl_26_360; 9022385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR) 90360443712SFredrik Soderstedt pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? 9042385049dSSeungwon Jeon ext_csd->raw_pwr_cl_52_360 : 9052385049dSSeungwon Jeon ext_csd->raw_pwr_cl_ddr_52_360; 9062385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HS200_MAX_DTR) 9070a5b6438SSeungwon Jeon pwrclass_val = (bus_width == EXT_CSD_DDR_BUS_WIDTH_8) ? 9080a5b6438SSeungwon Jeon ext_csd->raw_pwr_cl_ddr_200_360 : 9090a5b6438SSeungwon Jeon ext_csd->raw_pwr_cl_200_360; 910b87d8dbfSGirish K S break; 911b87d8dbfSGirish K S default: 9126606110dSJoe Perches pr_warn("%s: Voltage range not supported for power class\n", 9136606110dSJoe Perches mmc_hostname(host)); 914b87d8dbfSGirish K S return -EINVAL; 915b87d8dbfSGirish K S } 916b87d8dbfSGirish K S 917b87d8dbfSGirish K S if (bus_width & (EXT_CSD_BUS_WIDTH_8 | EXT_CSD_DDR_BUS_WIDTH_8)) 918b87d8dbfSGirish K S pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_8BIT_MASK) >> 919b87d8dbfSGirish K S EXT_CSD_PWR_CL_8BIT_SHIFT; 920b87d8dbfSGirish K S else 921b87d8dbfSGirish K S pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_4BIT_MASK) >> 922b87d8dbfSGirish K S EXT_CSD_PWR_CL_4BIT_SHIFT; 923b87d8dbfSGirish K S 924b87d8dbfSGirish K S /* If the power class is different from the default value */ 925b87d8dbfSGirish K S if (pwrclass_val > 0) { 926b87d8dbfSGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 927b87d8dbfSGirish K S EXT_CSD_POWER_CLASS, 928b87d8dbfSGirish K S pwrclass_val, 92971fe3eb0SSeungwon Jeon card->ext_csd.generic_cmd6_time); 930b87d8dbfSGirish K S } 931b87d8dbfSGirish K S 932b87d8dbfSGirish K S return err; 933b87d8dbfSGirish K S } 934b87d8dbfSGirish K S 9352385049dSSeungwon Jeon static int mmc_select_powerclass(struct mmc_card *card) 9362385049dSSeungwon Jeon { 9372385049dSSeungwon Jeon struct mmc_host *host = card->host; 9382385049dSSeungwon Jeon u32 bus_width, ext_csd_bits; 9392385049dSSeungwon Jeon int err, ddr; 9402385049dSSeungwon Jeon 9412385049dSSeungwon Jeon /* Power class selection is supported for versions >= 4.0 */ 942148bcab2SUlf Hansson if (!mmc_can_ext_csd(card)) 9432385049dSSeungwon Jeon return 0; 9442385049dSSeungwon Jeon 9452385049dSSeungwon Jeon bus_width = host->ios.bus_width; 9462385049dSSeungwon Jeon /* Power class values are defined only for 4/8 bit bus */ 9472385049dSSeungwon Jeon if (bus_width == MMC_BUS_WIDTH_1) 9482385049dSSeungwon Jeon return 0; 9492385049dSSeungwon Jeon 9502385049dSSeungwon Jeon ddr = card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52; 9512385049dSSeungwon Jeon if (ddr) 9522385049dSSeungwon Jeon ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? 9532385049dSSeungwon Jeon EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; 9542385049dSSeungwon Jeon else 9552385049dSSeungwon Jeon ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? 9562385049dSSeungwon Jeon EXT_CSD_BUS_WIDTH_8 : EXT_CSD_BUS_WIDTH_4; 9572385049dSSeungwon Jeon 9582385049dSSeungwon Jeon err = __mmc_select_powerclass(card, ext_csd_bits); 9592385049dSSeungwon Jeon if (err) 9602385049dSSeungwon Jeon pr_warn("%s: power class selection to bus width %d ddr %d failed\n", 9612385049dSSeungwon Jeon mmc_hostname(host), 1 << bus_width, ddr); 9622385049dSSeungwon Jeon 9632385049dSSeungwon Jeon return err; 9642385049dSSeungwon Jeon } 9652385049dSSeungwon Jeon 966b87d8dbfSGirish K S /* 967577fb131SSeungwon Jeon * Set the bus speed for the selected speed mode. 968a4924c71SGirish K S */ 969577fb131SSeungwon Jeon static void mmc_set_bus_speed(struct mmc_card *card) 970a4924c71SGirish K S { 971577fb131SSeungwon Jeon unsigned int max_dtr = (unsigned int)-1; 972577fb131SSeungwon Jeon 9730a5b6438SSeungwon Jeon if ((mmc_card_hs200(card) || mmc_card_hs400(card)) && 9740a5b6438SSeungwon Jeon max_dtr > card->ext_csd.hs200_max_dtr) 975577fb131SSeungwon Jeon max_dtr = card->ext_csd.hs200_max_dtr; 976577fb131SSeungwon Jeon else if (mmc_card_hs(card) && max_dtr > card->ext_csd.hs_max_dtr) 977577fb131SSeungwon Jeon max_dtr = card->ext_csd.hs_max_dtr; 978577fb131SSeungwon Jeon else if (max_dtr > card->csd.max_dtr) 979577fb131SSeungwon Jeon max_dtr = card->csd.max_dtr; 980577fb131SSeungwon Jeon 981577fb131SSeungwon Jeon mmc_set_clock(card->host, max_dtr); 982577fb131SSeungwon Jeon } 983577fb131SSeungwon Jeon 984577fb131SSeungwon Jeon /* 985577fb131SSeungwon Jeon * Select the bus width amoung 4-bit and 8-bit(SDR). 986577fb131SSeungwon Jeon * If the bus width is changed successfully, return the selected width value. 987577fb131SSeungwon Jeon * Zero is returned instead of error value if the wide width is not supported. 988577fb131SSeungwon Jeon */ 989577fb131SSeungwon Jeon static int mmc_select_bus_width(struct mmc_card *card) 990577fb131SSeungwon Jeon { 991a4924c71SGirish K S static unsigned ext_csd_bits[] = { 992a4924c71SGirish K S EXT_CSD_BUS_WIDTH_8, 993577fb131SSeungwon Jeon EXT_CSD_BUS_WIDTH_4, 994a4924c71SGirish K S }; 995a4924c71SGirish K S static unsigned bus_widths[] = { 996a4924c71SGirish K S MMC_BUS_WIDTH_8, 997577fb131SSeungwon Jeon MMC_BUS_WIDTH_4, 998a4924c71SGirish K S }; 999577fb131SSeungwon Jeon struct mmc_host *host = card->host; 1000577fb131SSeungwon Jeon unsigned idx, bus_width = 0; 1001577fb131SSeungwon Jeon int err = 0; 1002a4924c71SGirish K S 10031c2d26e3SAlexandre Belloni if (!mmc_can_ext_csd(card) || 1004577fb131SSeungwon Jeon !(host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) 1005577fb131SSeungwon Jeon return 0; 1006a4924c71SGirish K S 1007577fb131SSeungwon Jeon idx = (host->caps & MMC_CAP_8_BIT_DATA) ? 0 : 1; 1008a4924c71SGirish K S 1009a4924c71SGirish K S /* 1010a4924c71SGirish K S * Unlike SD, MMC cards dont have a configuration register to notify 1011a4924c71SGirish K S * supported bus width. So bus test command should be run to identify 1012a4924c71SGirish K S * the supported bus width or compare the ext csd values of current 1013a4924c71SGirish K S * bus width and ext csd values of 1 bit mode read earlier. 1014a4924c71SGirish K S */ 1015577fb131SSeungwon Jeon for (; idx < ARRAY_SIZE(bus_widths); idx++) { 1016a4924c71SGirish K S /* 1017a4924c71SGirish K S * Host is capable of 8bit transfer, then switch 1018a4924c71SGirish K S * the device to work in 8bit transfer mode. If the 1019a4924c71SGirish K S * mmc switch command returns error then switch to 1020a4924c71SGirish K S * 4bit transfer mode. On success set the corresponding 1021a4924c71SGirish K S * bus width on the host. 1022a4924c71SGirish K S */ 1023a4924c71SGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1024a4924c71SGirish K S EXT_CSD_BUS_WIDTH, 1025a4924c71SGirish K S ext_csd_bits[idx], 1026a4924c71SGirish K S card->ext_csd.generic_cmd6_time); 1027a4924c71SGirish K S if (err) 1028a4924c71SGirish K S continue; 1029a4924c71SGirish K S 1030577fb131SSeungwon Jeon bus_width = bus_widths[idx]; 1031577fb131SSeungwon Jeon mmc_set_bus_width(host, bus_width); 1032a4924c71SGirish K S 1033577fb131SSeungwon Jeon /* 1034577fb131SSeungwon Jeon * If controller can't handle bus width test, 1035577fb131SSeungwon Jeon * compare ext_csd previously read in 1 bit mode 1036577fb131SSeungwon Jeon * against ext_csd at new bus width 1037577fb131SSeungwon Jeon */ 1038a4924c71SGirish K S if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST)) 1039577fb131SSeungwon Jeon err = mmc_compare_ext_csds(card, bus_width); 1040a4924c71SGirish K S else 1041577fb131SSeungwon Jeon err = mmc_bus_test(card, bus_width); 1042577fb131SSeungwon Jeon 1043577fb131SSeungwon Jeon if (!err) { 1044577fb131SSeungwon Jeon err = bus_width; 1045a4924c71SGirish K S break; 1046577fb131SSeungwon Jeon } else { 1047577fb131SSeungwon Jeon pr_warn("%s: switch to bus width %d failed\n", 1048ed9feec7SWolfram Sang mmc_hostname(host), 1 << bus_width); 1049577fb131SSeungwon Jeon } 1050a4924c71SGirish K S } 1051a4924c71SGirish K S 1052577fb131SSeungwon Jeon return err; 1053577fb131SSeungwon Jeon } 1054577fb131SSeungwon Jeon 1055577fb131SSeungwon Jeon /* 1056577fb131SSeungwon Jeon * Switch to the high-speed mode 1057577fb131SSeungwon Jeon */ 1058577fb131SSeungwon Jeon static int mmc_select_hs(struct mmc_card *card) 1059577fb131SSeungwon Jeon { 1060577fb131SSeungwon Jeon int err; 1061577fb131SSeungwon Jeon 10624509f847SUlf Hansson err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1063577fb131SSeungwon Jeon EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS, 106453e60650SUlf Hansson card->ext_csd.generic_cmd6_time, MMC_TIMING_MMC_HS, 106553e60650SUlf Hansson true, true, true); 106667d35960SJungseung Lee if (err) 106767d35960SJungseung Lee pr_warn("%s: switch to high-speed failed, err:%d\n", 106867d35960SJungseung Lee mmc_hostname(card->host), err); 106967d35960SJungseung Lee 1070577fb131SSeungwon Jeon return err; 1071577fb131SSeungwon Jeon } 1072577fb131SSeungwon Jeon 1073577fb131SSeungwon Jeon /* 1074577fb131SSeungwon Jeon * Activate wide bus and DDR if supported. 1075577fb131SSeungwon Jeon */ 1076577fb131SSeungwon Jeon static int mmc_select_hs_ddr(struct mmc_card *card) 1077577fb131SSeungwon Jeon { 1078577fb131SSeungwon Jeon struct mmc_host *host = card->host; 1079577fb131SSeungwon Jeon u32 bus_width, ext_csd_bits; 1080577fb131SSeungwon Jeon int err = 0; 1081577fb131SSeungwon Jeon 1082577fb131SSeungwon Jeon if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52)) 1083577fb131SSeungwon Jeon return 0; 1084577fb131SSeungwon Jeon 1085577fb131SSeungwon Jeon bus_width = host->ios.bus_width; 1086577fb131SSeungwon Jeon if (bus_width == MMC_BUS_WIDTH_1) 1087577fb131SSeungwon Jeon return 0; 1088577fb131SSeungwon Jeon 1089577fb131SSeungwon Jeon ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? 1090577fb131SSeungwon Jeon EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; 1091577fb131SSeungwon Jeon 1092e173f891SUlf Hansson err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1093577fb131SSeungwon Jeon EXT_CSD_BUS_WIDTH, 1094577fb131SSeungwon Jeon ext_csd_bits, 1095e173f891SUlf Hansson card->ext_csd.generic_cmd6_time, 1096e173f891SUlf Hansson MMC_TIMING_MMC_DDR52, 1097e173f891SUlf Hansson true, true, true); 1098577fb131SSeungwon Jeon if (err) { 10994b75bffcSAndrew Gabbasov pr_err("%s: switch to bus width %d ddr failed\n", 1100577fb131SSeungwon Jeon mmc_hostname(host), 1 << bus_width); 1101577fb131SSeungwon Jeon return err; 1102577fb131SSeungwon Jeon } 1103577fb131SSeungwon Jeon 1104577fb131SSeungwon Jeon /* 1105577fb131SSeungwon Jeon * eMMC cards can support 3.3V to 1.2V i/o (vccq) 1106577fb131SSeungwon Jeon * signaling. 1107577fb131SSeungwon Jeon * 1108577fb131SSeungwon Jeon * EXT_CSD_CARD_TYPE_DDR_1_8V means 3.3V or 1.8V vccq. 1109577fb131SSeungwon Jeon * 1110577fb131SSeungwon Jeon * 1.8V vccq at 3.3V core voltage (vcc) is not required 1111577fb131SSeungwon Jeon * in the JEDEC spec for DDR. 1112577fb131SSeungwon Jeon * 1113312449efSChuanxiao.Dong * Even (e)MMC card can support 3.3v to 1.2v vccq, but not all 1114312449efSChuanxiao.Dong * host controller can support this, like some of the SDHCI 1115312449efSChuanxiao.Dong * controller which connect to an eMMC device. Some of these 1116312449efSChuanxiao.Dong * host controller still needs to use 1.8v vccq for supporting 1117312449efSChuanxiao.Dong * DDR mode. 1118312449efSChuanxiao.Dong * 1119312449efSChuanxiao.Dong * So the sequence will be: 1120312449efSChuanxiao.Dong * if (host and device can both support 1.2v IO) 1121312449efSChuanxiao.Dong * use 1.2v IO; 1122312449efSChuanxiao.Dong * else if (host and device can both support 1.8v IO) 1123312449efSChuanxiao.Dong * use 1.8v IO; 1124312449efSChuanxiao.Dong * so if host and device can only support 3.3v IO, this is the 1125312449efSChuanxiao.Dong * last choice. 1126577fb131SSeungwon Jeon * 1127577fb131SSeungwon Jeon * WARNING: eMMC rules are NOT the same as SD DDR 1128577fb131SSeungwon Jeon */ 112920f921bbSUlf Hansson if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_2V) { 11304e74b6b3SUlf Hansson err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); 113120f921bbSUlf Hansson if (!err) 113220f921bbSUlf Hansson return 0; 113320f921bbSUlf Hansson } 1134577fb131SSeungwon Jeon 113520f921bbSUlf Hansson if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_8V && 113620f921bbSUlf Hansson host->caps & MMC_CAP_1_8V_DDR) 11374e74b6b3SUlf Hansson err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); 1138312449efSChuanxiao.Dong 1139312449efSChuanxiao.Dong /* make sure vccq is 3.3v after switching disaster */ 1140312449efSChuanxiao.Dong if (err) 11414e74b6b3SUlf Hansson err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330); 1142312449efSChuanxiao.Dong 1143577fb131SSeungwon Jeon return err; 1144577fb131SSeungwon Jeon } 1145577fb131SSeungwon Jeon 11460a5b6438SSeungwon Jeon static int mmc_select_hs400(struct mmc_card *card) 11470a5b6438SSeungwon Jeon { 11480a5b6438SSeungwon Jeon struct mmc_host *host = card->host; 114951b12f77SAdrian Hunter unsigned int max_dtr; 11500a5b6438SSeungwon Jeon int err = 0; 1151cc4f414cSAdrian Hunter u8 val; 11520a5b6438SSeungwon Jeon 11530a5b6438SSeungwon Jeon /* 11540a5b6438SSeungwon Jeon * HS400 mode requires 8-bit bus width 11550a5b6438SSeungwon Jeon */ 11560a5b6438SSeungwon Jeon if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 && 11570a5b6438SSeungwon Jeon host->ios.bus_width == MMC_BUS_WIDTH_8)) 11580a5b6438SSeungwon Jeon return 0; 11590a5b6438SSeungwon Jeon 116051b12f77SAdrian Hunter /* Switch card to HS mode */ 1161adb24d42SWenkai Du val = EXT_CSD_TIMING_HS; 11620a5b6438SSeungwon Jeon err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1163cc4f414cSAdrian Hunter EXT_CSD_HS_TIMING, val, 1164aa33ce3cSUlf Hansson card->ext_csd.generic_cmd6_time, 0, 116508573eafSChaotian Jing true, false, true); 11660a5b6438SSeungwon Jeon if (err) { 11674b75bffcSAndrew Gabbasov pr_err("%s: switch to high-speed from hs200 failed, err:%d\n", 11680a5b6438SSeungwon Jeon mmc_hostname(host), err); 11690a5b6438SSeungwon Jeon return err; 11700a5b6438SSeungwon Jeon } 11710a5b6438SSeungwon Jeon 117251b12f77SAdrian Hunter /* Set host controller to HS timing */ 117351b12f77SAdrian Hunter mmc_set_timing(card->host, MMC_TIMING_MMC_HS); 117451b12f77SAdrian Hunter 1175649c6059SZiyuan Xu /* Reduce frequency to HS frequency */ 1176649c6059SZiyuan Xu max_dtr = card->ext_csd.hs_max_dtr; 1177649c6059SZiyuan Xu mmc_set_clock(host, max_dtr); 1178649c6059SZiyuan Xu 1179d2302933SAdrian Hunter err = mmc_switch_status(card); 1180d2302933SAdrian Hunter if (err) 1181d2302933SAdrian Hunter goto out_err; 1182d2302933SAdrian Hunter 1183d2302933SAdrian Hunter /* Switch card to DDR */ 11840a5b6438SSeungwon Jeon err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 11850a5b6438SSeungwon Jeon EXT_CSD_BUS_WIDTH, 11860a5b6438SSeungwon Jeon EXT_CSD_DDR_BUS_WIDTH_8, 11870a5b6438SSeungwon Jeon card->ext_csd.generic_cmd6_time); 11880a5b6438SSeungwon Jeon if (err) { 11894b75bffcSAndrew Gabbasov pr_err("%s: switch to bus width for hs400 failed, err:%d\n", 11900a5b6438SSeungwon Jeon mmc_hostname(host), err); 11910a5b6438SSeungwon Jeon return err; 11920a5b6438SSeungwon Jeon } 11930a5b6438SSeungwon Jeon 1194d2302933SAdrian Hunter /* Switch card to HS400 */ 1195cc4f414cSAdrian Hunter val = EXT_CSD_TIMING_HS400 | 1196cc4f414cSAdrian Hunter card->drive_strength << EXT_CSD_DRV_STR_SHIFT; 11970a5b6438SSeungwon Jeon err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1198cc4f414cSAdrian Hunter EXT_CSD_HS_TIMING, val, 1199aa33ce3cSUlf Hansson card->ext_csd.generic_cmd6_time, 0, 120008573eafSChaotian Jing true, false, true); 12010a5b6438SSeungwon Jeon if (err) { 12024b75bffcSAndrew Gabbasov pr_err("%s: switch to hs400 failed, err:%d\n", 12030a5b6438SSeungwon Jeon mmc_hostname(host), err); 12040a5b6438SSeungwon Jeon return err; 12050a5b6438SSeungwon Jeon } 12060a5b6438SSeungwon Jeon 1207d2302933SAdrian Hunter /* Set host controller to HS400 timing and frequency */ 12080a5b6438SSeungwon Jeon mmc_set_timing(host, MMC_TIMING_MMC_HS400); 12090a5b6438SSeungwon Jeon mmc_set_bus_speed(card); 12100a5b6438SSeungwon Jeon 1211d2302933SAdrian Hunter err = mmc_switch_status(card); 1212d2302933SAdrian Hunter if (err) 1213d2302933SAdrian Hunter goto out_err; 1214d2302933SAdrian Hunter 12150a5b6438SSeungwon Jeon return 0; 1216d2302933SAdrian Hunter 1217d2302933SAdrian Hunter out_err: 1218d2302933SAdrian Hunter pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), 1219d2302933SAdrian Hunter __func__, err); 1220d2302933SAdrian Hunter return err; 12210a5b6438SSeungwon Jeon } 12220a5b6438SSeungwon Jeon 12236376f69dSAdrian Hunter int mmc_hs200_to_hs400(struct mmc_card *card) 12246376f69dSAdrian Hunter { 12256376f69dSAdrian Hunter return mmc_select_hs400(card); 12266376f69dSAdrian Hunter } 12276376f69dSAdrian Hunter 12286376f69dSAdrian Hunter int mmc_hs400_to_hs200(struct mmc_card *card) 12296376f69dSAdrian Hunter { 12306376f69dSAdrian Hunter struct mmc_host *host = card->host; 12316376f69dSAdrian Hunter unsigned int max_dtr; 12326376f69dSAdrian Hunter int err; 1233cc4f414cSAdrian Hunter u8 val; 12346376f69dSAdrian Hunter 12356376f69dSAdrian Hunter /* Reduce frequency to HS */ 12366376f69dSAdrian Hunter max_dtr = card->ext_csd.hs_max_dtr; 12376376f69dSAdrian Hunter mmc_set_clock(host, max_dtr); 12386376f69dSAdrian Hunter 12396376f69dSAdrian Hunter /* Switch HS400 to HS DDR */ 1240adb24d42SWenkai Du val = EXT_CSD_TIMING_HS; 12416376f69dSAdrian Hunter err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, 1242aa33ce3cSUlf Hansson val, card->ext_csd.generic_cmd6_time, 0, 124308573eafSChaotian Jing true, false, true); 12446376f69dSAdrian Hunter if (err) 12456376f69dSAdrian Hunter goto out_err; 12466376f69dSAdrian Hunter 12476376f69dSAdrian Hunter mmc_set_timing(host, MMC_TIMING_MMC_DDR52); 12486376f69dSAdrian Hunter 12496376f69dSAdrian Hunter err = mmc_switch_status(card); 12506376f69dSAdrian Hunter if (err) 12516376f69dSAdrian Hunter goto out_err; 12526376f69dSAdrian Hunter 12536376f69dSAdrian Hunter /* Switch HS DDR to HS */ 12546376f69dSAdrian Hunter err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BUS_WIDTH, 12556376f69dSAdrian Hunter EXT_CSD_BUS_WIDTH_8, card->ext_csd.generic_cmd6_time, 1256aa33ce3cSUlf Hansson 0, true, false, true); 12576376f69dSAdrian Hunter if (err) 12586376f69dSAdrian Hunter goto out_err; 12596376f69dSAdrian Hunter 12606376f69dSAdrian Hunter mmc_set_timing(host, MMC_TIMING_MMC_HS); 12616376f69dSAdrian Hunter 12626376f69dSAdrian Hunter err = mmc_switch_status(card); 12636376f69dSAdrian Hunter if (err) 12646376f69dSAdrian Hunter goto out_err; 12656376f69dSAdrian Hunter 12666376f69dSAdrian Hunter /* Switch HS to HS200 */ 1267cc4f414cSAdrian Hunter val = EXT_CSD_TIMING_HS200 | 1268cc4f414cSAdrian Hunter card->drive_strength << EXT_CSD_DRV_STR_SHIFT; 12696376f69dSAdrian Hunter err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, 1270aa33ce3cSUlf Hansson val, card->ext_csd.generic_cmd6_time, 0, 127108573eafSChaotian Jing true, false, true); 12726376f69dSAdrian Hunter if (err) 12736376f69dSAdrian Hunter goto out_err; 12746376f69dSAdrian Hunter 12756376f69dSAdrian Hunter mmc_set_timing(host, MMC_TIMING_MMC_HS200); 12766376f69dSAdrian Hunter 1277ef3d2322SAdrian Hunter /* 1278ef3d2322SAdrian Hunter * For HS200, CRC errors are not a reliable way to know the switch 1279ef3d2322SAdrian Hunter * failed. If there really is a problem, we would expect tuning will 1280ef3d2322SAdrian Hunter * fail and the result ends up the same. 1281ef3d2322SAdrian Hunter */ 1282ef3d2322SAdrian Hunter err = __mmc_switch_status(card, false); 12836376f69dSAdrian Hunter if (err) 12846376f69dSAdrian Hunter goto out_err; 12856376f69dSAdrian Hunter 12866376f69dSAdrian Hunter mmc_set_bus_speed(card); 12876376f69dSAdrian Hunter 12886376f69dSAdrian Hunter return 0; 12896376f69dSAdrian Hunter 12906376f69dSAdrian Hunter out_err: 12916376f69dSAdrian Hunter pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), 12926376f69dSAdrian Hunter __func__, err); 12936376f69dSAdrian Hunter return err; 12946376f69dSAdrian Hunter } 12956376f69dSAdrian Hunter 129681ac2af6SShawn Lin static int mmc_select_hs400es(struct mmc_card *card) 129781ac2af6SShawn Lin { 129881ac2af6SShawn Lin struct mmc_host *host = card->host; 129981ac2af6SShawn Lin int err = 0; 130081ac2af6SShawn Lin u8 val; 130181ac2af6SShawn Lin 130281ac2af6SShawn Lin if (!(host->caps & MMC_CAP_8_BIT_DATA)) { 130381ac2af6SShawn Lin err = -ENOTSUPP; 130481ac2af6SShawn Lin goto out_err; 130581ac2af6SShawn Lin } 130681ac2af6SShawn Lin 13071720d354SShawn Lin if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400_1_2V) 13084e74b6b3SUlf Hansson err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); 13091720d354SShawn Lin 13101720d354SShawn Lin if (err && card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400_1_8V) 13114e74b6b3SUlf Hansson err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); 13121720d354SShawn Lin 13131720d354SShawn Lin /* If fails try again during next card power cycle */ 13141720d354SShawn Lin if (err) 13151720d354SShawn Lin goto out_err; 13161720d354SShawn Lin 131781ac2af6SShawn Lin err = mmc_select_bus_width(card); 131881ac2af6SShawn Lin if (err < 0) 131981ac2af6SShawn Lin goto out_err; 132081ac2af6SShawn Lin 132181ac2af6SShawn Lin /* Switch card to HS mode */ 132253e60650SUlf Hansson err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 132353e60650SUlf Hansson EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS, 132453e60650SUlf Hansson card->ext_csd.generic_cmd6_time, 0, 132553e60650SUlf Hansson true, false, true); 132653e60650SUlf Hansson if (err) { 132753e60650SUlf Hansson pr_err("%s: switch to hs for hs400es failed, err:%d\n", 132853e60650SUlf Hansson mmc_hostname(host), err); 132953e60650SUlf Hansson goto out_err; 133053e60650SUlf Hansson } 133153e60650SUlf Hansson 133253e60650SUlf Hansson mmc_set_timing(host, MMC_TIMING_MMC_HS); 133353e60650SUlf Hansson err = mmc_switch_status(card); 133467d35960SJungseung Lee if (err) 133581ac2af6SShawn Lin goto out_err; 133681ac2af6SShawn Lin 13374f25580fSShawn Lin mmc_set_clock(host, card->ext_csd.hs_max_dtr); 13384f25580fSShawn Lin 133981ac2af6SShawn Lin /* Switch card to DDR with strobe bit */ 134081ac2af6SShawn Lin val = EXT_CSD_DDR_BUS_WIDTH_8 | EXT_CSD_BUS_WIDTH_STROBE; 134181ac2af6SShawn Lin err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 134281ac2af6SShawn Lin EXT_CSD_BUS_WIDTH, 134381ac2af6SShawn Lin val, 134481ac2af6SShawn Lin card->ext_csd.generic_cmd6_time); 134581ac2af6SShawn Lin if (err) { 134681ac2af6SShawn Lin pr_err("%s: switch to bus width for hs400es failed, err:%d\n", 134781ac2af6SShawn Lin mmc_hostname(host), err); 134881ac2af6SShawn Lin goto out_err; 134981ac2af6SShawn Lin } 135081ac2af6SShawn Lin 135181ac2af6SShawn Lin /* Switch card to HS400 */ 135281ac2af6SShawn Lin val = EXT_CSD_TIMING_HS400 | 135381ac2af6SShawn Lin card->drive_strength << EXT_CSD_DRV_STR_SHIFT; 135481ac2af6SShawn Lin err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 135581ac2af6SShawn Lin EXT_CSD_HS_TIMING, val, 1356aa33ce3cSUlf Hansson card->ext_csd.generic_cmd6_time, 0, 135781ac2af6SShawn Lin true, false, true); 135881ac2af6SShawn Lin if (err) { 135981ac2af6SShawn Lin pr_err("%s: switch to hs400es failed, err:%d\n", 136081ac2af6SShawn Lin mmc_hostname(host), err); 136181ac2af6SShawn Lin goto out_err; 136281ac2af6SShawn Lin } 136381ac2af6SShawn Lin 136481ac2af6SShawn Lin /* Set host controller to HS400 timing and frequency */ 136581ac2af6SShawn Lin mmc_set_timing(host, MMC_TIMING_MMC_HS400); 136681ac2af6SShawn Lin 136781ac2af6SShawn Lin /* Controller enable enhanced strobe function */ 136881ac2af6SShawn Lin host->ios.enhanced_strobe = true; 136981ac2af6SShawn Lin if (host->ops->hs400_enhanced_strobe) 137081ac2af6SShawn Lin host->ops->hs400_enhanced_strobe(host, &host->ios); 137181ac2af6SShawn Lin 137281ac2af6SShawn Lin err = mmc_switch_status(card); 137381ac2af6SShawn Lin if (err) 137481ac2af6SShawn Lin goto out_err; 137581ac2af6SShawn Lin 137681ac2af6SShawn Lin return 0; 137781ac2af6SShawn Lin 137881ac2af6SShawn Lin out_err: 137981ac2af6SShawn Lin pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), 138081ac2af6SShawn Lin __func__, err); 138181ac2af6SShawn Lin return err; 138281ac2af6SShawn Lin } 138381ac2af6SShawn Lin 1384cc4f414cSAdrian Hunter static void mmc_select_driver_type(struct mmc_card *card) 1385cc4f414cSAdrian Hunter { 1386cc4f414cSAdrian Hunter int card_drv_type, drive_strength, drv_type; 1387cc4f414cSAdrian Hunter 1388cc4f414cSAdrian Hunter card_drv_type = card->ext_csd.raw_driver_strength | 1389cc4f414cSAdrian Hunter mmc_driver_type_mask(0); 1390cc4f414cSAdrian Hunter 1391cc4f414cSAdrian Hunter drive_strength = mmc_select_drive_strength(card, 1392cc4f414cSAdrian Hunter card->ext_csd.hs200_max_dtr, 1393cc4f414cSAdrian Hunter card_drv_type, &drv_type); 1394cc4f414cSAdrian Hunter 1395cc4f414cSAdrian Hunter card->drive_strength = drive_strength; 1396cc4f414cSAdrian Hunter 1397cc4f414cSAdrian Hunter if (drv_type) 1398cc4f414cSAdrian Hunter mmc_set_driver_type(card->host, drv_type); 1399cc4f414cSAdrian Hunter } 1400cc4f414cSAdrian Hunter 1401577fb131SSeungwon Jeon /* 1402577fb131SSeungwon Jeon * For device supporting HS200 mode, the following sequence 1403577fb131SSeungwon Jeon * should be done before executing the tuning process. 1404577fb131SSeungwon Jeon * 1. set the desired bus width(4-bit or 8-bit, 1-bit is not supported) 1405577fb131SSeungwon Jeon * 2. switch to HS200 mode 1406577fb131SSeungwon Jeon * 3. set the clock to > 52Mhz and <=200MHz 1407577fb131SSeungwon Jeon */ 1408577fb131SSeungwon Jeon static int mmc_select_hs200(struct mmc_card *card) 1409577fb131SSeungwon Jeon { 1410577fb131SSeungwon Jeon struct mmc_host *host = card->host; 1411e51534c8SDong Aisheng unsigned int old_timing, old_signal_voltage; 1412577fb131SSeungwon Jeon int err = -EINVAL; 1413cc4f414cSAdrian Hunter u8 val; 1414577fb131SSeungwon Jeon 1415e51534c8SDong Aisheng old_signal_voltage = host->ios.signal_voltage; 1416577fb131SSeungwon Jeon if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_2V) 14174e74b6b3SUlf Hansson err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); 1418577fb131SSeungwon Jeon 1419577fb131SSeungwon Jeon if (err && card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_8V) 14204e74b6b3SUlf Hansson err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); 1421577fb131SSeungwon Jeon 1422577fb131SSeungwon Jeon /* If fails try again during next card power cycle */ 1423577fb131SSeungwon Jeon if (err) 1424e51534c8SDong Aisheng return err; 1425577fb131SSeungwon Jeon 1426cc4f414cSAdrian Hunter mmc_select_driver_type(card); 1427cc4f414cSAdrian Hunter 1428577fb131SSeungwon Jeon /* 1429577fb131SSeungwon Jeon * Set the bus width(4 or 8) with host's support and 1430577fb131SSeungwon Jeon * switch to HS200 mode if bus width is set successfully. 1431577fb131SSeungwon Jeon */ 1432577fb131SSeungwon Jeon err = mmc_select_bus_width(card); 14338b7be8f2SPeter Griffin if (err > 0) { 1434cc4f414cSAdrian Hunter val = EXT_CSD_TIMING_HS200 | 1435cc4f414cSAdrian Hunter card->drive_strength << EXT_CSD_DRV_STR_SHIFT; 1436577fb131SSeungwon Jeon err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1437cc4f414cSAdrian Hunter EXT_CSD_HS_TIMING, val, 1438aa33ce3cSUlf Hansson card->ext_csd.generic_cmd6_time, 0, 143908573eafSChaotian Jing true, false, true); 14401815e61bSAdrian Hunter if (err) 14411815e61bSAdrian Hunter goto err; 14421815e61bSAdrian Hunter old_timing = host->ios.timing; 1443577fb131SSeungwon Jeon mmc_set_timing(host, MMC_TIMING_MMC_HS200); 144408573eafSChaotian Jing 1445ef3d2322SAdrian Hunter /* 1446ef3d2322SAdrian Hunter * For HS200, CRC errors are not a reliable way to know the 1447ef3d2322SAdrian Hunter * switch failed. If there really is a problem, we would expect 1448ef3d2322SAdrian Hunter * tuning will fail and the result ends up the same. 1449ef3d2322SAdrian Hunter */ 1450ef3d2322SAdrian Hunter err = __mmc_switch_status(card, false); 1451ef3d2322SAdrian Hunter 14521815e61bSAdrian Hunter /* 14531815e61bSAdrian Hunter * mmc_select_timing() assumes timing has not changed if 14541815e61bSAdrian Hunter * it is a switch error. 14551815e61bSAdrian Hunter */ 14561815e61bSAdrian Hunter if (err == -EBADMSG) 14571815e61bSAdrian Hunter mmc_set_timing(host, old_timing); 14581815e61bSAdrian Hunter } 1459a4924c71SGirish K S err: 1460e51534c8SDong Aisheng if (err) { 1461e51534c8SDong Aisheng /* fall back to the old signal voltage, if fails report error */ 14624e74b6b3SUlf Hansson if (mmc_set_signal_voltage(host, old_signal_voltage)) 1463e51534c8SDong Aisheng err = -EIO; 1464e51534c8SDong Aisheng 14651815e61bSAdrian Hunter pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), 14661815e61bSAdrian Hunter __func__, err); 1467e51534c8SDong Aisheng } 1468a4924c71SGirish K S return err; 1469a4924c71SGirish K S } 1470a4924c71SGirish K S 1471a4924c71SGirish K S /* 147281ac2af6SShawn Lin * Activate High Speed, HS200 or HS400ES mode if supported. 1473577fb131SSeungwon Jeon */ 1474577fb131SSeungwon Jeon static int mmc_select_timing(struct mmc_card *card) 1475577fb131SSeungwon Jeon { 1476577fb131SSeungwon Jeon int err = 0; 1477577fb131SSeungwon Jeon 1478148bcab2SUlf Hansson if (!mmc_can_ext_csd(card)) 1479577fb131SSeungwon Jeon goto bus_speed; 1480577fb131SSeungwon Jeon 148181ac2af6SShawn Lin if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400ES) 148281ac2af6SShawn Lin err = mmc_select_hs400es(card); 148381ac2af6SShawn Lin else if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200) 1484577fb131SSeungwon Jeon err = mmc_select_hs200(card); 1485577fb131SSeungwon Jeon else if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS) 1486577fb131SSeungwon Jeon err = mmc_select_hs(card); 1487577fb131SSeungwon Jeon 1488577fb131SSeungwon Jeon if (err && err != -EBADMSG) 1489577fb131SSeungwon Jeon return err; 1490577fb131SSeungwon Jeon 1491577fb131SSeungwon Jeon bus_speed: 1492577fb131SSeungwon Jeon /* 1493577fb131SSeungwon Jeon * Set the bus speed to the selected bus timing. 1494577fb131SSeungwon Jeon * If timing is not selected, backward compatible is the default. 1495577fb131SSeungwon Jeon */ 1496577fb131SSeungwon Jeon mmc_set_bus_speed(card); 14970400ed0aSDong Aisheng return 0; 1498577fb131SSeungwon Jeon } 1499577fb131SSeungwon Jeon 1500577fb131SSeungwon Jeon /* 1501577fb131SSeungwon Jeon * Execute tuning sequence to seek the proper bus operating 15020a5b6438SSeungwon Jeon * conditions for HS200 and HS400, which sends CMD21 to the device. 1503577fb131SSeungwon Jeon */ 1504577fb131SSeungwon Jeon static int mmc_hs200_tuning(struct mmc_card *card) 1505577fb131SSeungwon Jeon { 1506577fb131SSeungwon Jeon struct mmc_host *host = card->host; 1507577fb131SSeungwon Jeon 15080a5b6438SSeungwon Jeon /* 15090a5b6438SSeungwon Jeon * Timing should be adjusted to the HS400 target 15100a5b6438SSeungwon Jeon * operation frequency for tuning process 15110a5b6438SSeungwon Jeon */ 15120a5b6438SSeungwon Jeon if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 && 15130a5b6438SSeungwon Jeon host->ios.bus_width == MMC_BUS_WIDTH_8) 15140a5b6438SSeungwon Jeon if (host->ops->prepare_hs400_tuning) 15150a5b6438SSeungwon Jeon host->ops->prepare_hs400_tuning(host, &host->ios); 15160a5b6438SSeungwon Jeon 151763e415c6SAdrian Hunter return mmc_execute_tuning(card); 1518577fb131SSeungwon Jeon } 1519577fb131SSeungwon Jeon 1520577fb131SSeungwon Jeon /* 15216abaa0c9SPierre Ossman * Handle the detection and initialisation of a card. 15226abaa0c9SPierre Ossman * 15238769392bSDeepak Saxena * In the case of a resume, "oldcard" will contain the card 15246abaa0c9SPierre Ossman * we're trying to reinitialise. 15257ea239d9SPierre Ossman */ 15268c75deaeSPierre Ossman static int mmc_init_card(struct mmc_host *host, u32 ocr, 15276abaa0c9SPierre Ossman struct mmc_card *oldcard) 15287ea239d9SPierre Ossman { 15297ea239d9SPierre Ossman struct mmc_card *card; 1530577fb131SSeungwon Jeon int err; 15317ea239d9SPierre Ossman u32 cid[4]; 1532b676f039SPhilip Rakity u32 rocr; 15337ea239d9SPierre Ossman 1534d84075c8SPierre Ossman WARN_ON(!host->claimed); 15357ea239d9SPierre Ossman 153644669034SStefan Nilsson XK /* Set correct bus mode for MMC before attempting init */ 153744669034SStefan Nilsson XK if (!mmc_host_is_spi(host)) 153844669034SStefan Nilsson XK mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); 153944669034SStefan Nilsson XK 15407ea239d9SPierre Ossman /* 15417ea239d9SPierre Ossman * Since we're changing the OCR value, we seem to 15427ea239d9SPierre Ossman * need to tell some cards to go back to the idle 15437ea239d9SPierre Ossman * state. We wait 1ms to give cards time to 15447ea239d9SPierre Ossman * respond. 1545c3805467SBalaji T K * mmc_go_idle is needed for eMMC that are asleep 15467ea239d9SPierre Ossman */ 15477ea239d9SPierre Ossman mmc_go_idle(host); 15487ea239d9SPierre Ossman 15497ea239d9SPierre Ossman /* The extra bit indicates that we support high capacity */ 1550b676f039SPhilip Rakity err = mmc_send_op_cond(host, ocr | (1 << 30), &rocr); 155117b0429dSPierre Ossman if (err) 15526abaa0c9SPierre Ossman goto err; 15537ea239d9SPierre Ossman 15547ea239d9SPierre Ossman /* 1555af517150SDavid Brownell * For SPI, enable CRC as appropriate. 1556af517150SDavid Brownell */ 1557af517150SDavid Brownell if (mmc_host_is_spi(host)) { 1558af517150SDavid Brownell err = mmc_spi_set_crc(host, use_spi_crc); 1559af517150SDavid Brownell if (err) 1560af517150SDavid Brownell goto err; 1561af517150SDavid Brownell } 1562af517150SDavid Brownell 1563af517150SDavid Brownell /* 15647ea239d9SPierre Ossman * Fetch CID from card. 15657ea239d9SPierre Ossman */ 1566af517150SDavid Brownell if (mmc_host_is_spi(host)) 1567af517150SDavid Brownell err = mmc_send_cid(host, cid); 1568af517150SDavid Brownell else 15697ea239d9SPierre Ossman err = mmc_all_send_cid(host, cid); 157017b0429dSPierre Ossman if (err) 15717ea239d9SPierre Ossman goto err; 15727ea239d9SPierre Ossman 15736abaa0c9SPierre Ossman if (oldcard) { 1574adf66a0dSPierre Ossman if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) { 1575adf66a0dSPierre Ossman err = -ENOENT; 15766abaa0c9SPierre Ossman goto err; 1577adf66a0dSPierre Ossman } 15786abaa0c9SPierre Ossman 15796abaa0c9SPierre Ossman card = oldcard; 15806abaa0c9SPierre Ossman } else { 15817ea239d9SPierre Ossman /* 15827ea239d9SPierre Ossman * Allocate card structure. 15837ea239d9SPierre Ossman */ 158451ec92e2SPierre Ossman card = mmc_alloc_card(host, &mmc_type); 1585adf66a0dSPierre Ossman if (IS_ERR(card)) { 1586adf66a0dSPierre Ossman err = PTR_ERR(card); 15877ea239d9SPierre Ossman goto err; 1588adf66a0dSPierre Ossman } 15897ea239d9SPierre Ossman 159069041150SUlf Hansson card->ocr = ocr; 15917ea239d9SPierre Ossman card->type = MMC_TYPE_MMC; 15927ea239d9SPierre Ossman card->rca = 1; 15937ea239d9SPierre Ossman memcpy(card->raw_cid, cid, sizeof(card->raw_cid)); 15946abaa0c9SPierre Ossman } 15957ea239d9SPierre Ossman 15967ea239d9SPierre Ossman /* 1597eac86321SDoug Anderson * Call the optional HC's init_card function to handle quirks. 1598eac86321SDoug Anderson */ 1599eac86321SDoug Anderson if (host->ops->init_card) 1600eac86321SDoug Anderson host->ops->init_card(host, card); 1601eac86321SDoug Anderson 1602eac86321SDoug Anderson /* 1603af517150SDavid Brownell * For native busses: set card RCA and quit open drain mode. 16047ea239d9SPierre Ossman */ 1605af517150SDavid Brownell if (!mmc_host_is_spi(host)) { 16067ea239d9SPierre Ossman err = mmc_set_relative_addr(card); 160717b0429dSPierre Ossman if (err) 16087ea239d9SPierre Ossman goto free_card; 16097ea239d9SPierre Ossman 16107ea239d9SPierre Ossman mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL); 1611af517150SDavid Brownell } 16127ea239d9SPierre Ossman 16136abaa0c9SPierre Ossman if (!oldcard) { 16147ea239d9SPierre Ossman /* 16157ea239d9SPierre Ossman * Fetch CSD from card. 16167ea239d9SPierre Ossman */ 16177ea239d9SPierre Ossman err = mmc_send_csd(card, card->raw_csd); 161817b0429dSPierre Ossman if (err) 16197ea239d9SPierre Ossman goto free_card; 16207ea239d9SPierre Ossman 1621bd766312SPierre Ossman err = mmc_decode_csd(card); 1622adf66a0dSPierre Ossman if (err) 1623bd766312SPierre Ossman goto free_card; 1624bd766312SPierre Ossman err = mmc_decode_cid(card); 1625adf66a0dSPierre Ossman if (err) 1626bd766312SPierre Ossman goto free_card; 16276abaa0c9SPierre Ossman } 16287ea239d9SPierre Ossman 16297ea239d9SPierre Ossman /* 16303d705d14SSascha Hauer * handling only for cards supporting DSR and hosts requesting 16313d705d14SSascha Hauer * DSR configuration 16323d705d14SSascha Hauer */ 16333d705d14SSascha Hauer if (card->csd.dsr_imp && host->dsr_req) 16343d705d14SSascha Hauer mmc_set_dsr(host); 16353d705d14SSascha Hauer 16363d705d14SSascha Hauer /* 163789a73cf5SPierre Ossman * Select card, as all following commands rely on that. 16387ea239d9SPierre Ossman */ 1639af517150SDavid Brownell if (!mmc_host_is_spi(host)) { 16407ea239d9SPierre Ossman err = mmc_select_card(card); 164117b0429dSPierre Ossman if (err) 16427ea239d9SPierre Ossman goto free_card; 1643af517150SDavid Brownell } 16447ea239d9SPierre Ossman 16456abaa0c9SPierre Ossman if (!oldcard) { 1646076ec38aSUlf Hansson /* Read extended CSD. */ 1647076ec38aSUlf Hansson err = mmc_read_ext_csd(card); 164817b0429dSPierre Ossman if (err) 16497ea239d9SPierre Ossman goto free_card; 1650b676f039SPhilip Rakity 165187e88659SMasahiro Yamada /* 165287e88659SMasahiro Yamada * If doing byte addressing, check if required to do sector 1653b676f039SPhilip Rakity * addressing. Handle the case of <2GB cards needing sector 1654b676f039SPhilip Rakity * addressing. See section 8.1 JEDEC Standard JED84-A441; 1655b676f039SPhilip Rakity * ocr register has bit 30 set for sector addressing. 1656b676f039SPhilip Rakity */ 165787e88659SMasahiro Yamada if (rocr & BIT(30)) 1658b676f039SPhilip Rakity mmc_card_set_blockaddr(card); 1659b676f039SPhilip Rakity 1660dfe86cbaSAdrian Hunter /* Erase size depends on CSD and Extended CSD */ 1661dfe86cbaSAdrian Hunter mmc_set_erase_size(card); 16626abaa0c9SPierre Ossman } 16637ea239d9SPierre Ossman 16647ea239d9SPierre Ossman /* 1665709de99dSChuanxiao Dong * If enhanced_area_en is TRUE, host needs to enable ERASE_GRP_DEF 1666709de99dSChuanxiao Dong * bit. This bit will be lost every time after a reset or power off. 1667709de99dSChuanxiao Dong */ 166869803d4fSGrégory Soutadé if (card->ext_csd.partition_setting_completed || 166983bb24aaSAdrian Hunter (card->ext_csd.rev >= 3 && (host->caps2 & MMC_CAP2_HC_ERASE_SZ))) { 1670709de99dSChuanxiao Dong err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1671b23cf0bdSSeungwon Jeon EXT_CSD_ERASE_GROUP_DEF, 1, 1672b23cf0bdSSeungwon Jeon card->ext_csd.generic_cmd6_time); 1673709de99dSChuanxiao Dong 1674709de99dSChuanxiao Dong if (err && err != -EBADMSG) 1675709de99dSChuanxiao Dong goto free_card; 1676709de99dSChuanxiao Dong 1677709de99dSChuanxiao Dong if (err) { 1678709de99dSChuanxiao Dong err = 0; 1679709de99dSChuanxiao Dong /* 1680709de99dSChuanxiao Dong * Just disable enhanced area off & sz 1681709de99dSChuanxiao Dong * will try to enable ERASE_GROUP_DEF 1682709de99dSChuanxiao Dong * during next time reinit 1683709de99dSChuanxiao Dong */ 1684709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset = -EINVAL; 1685709de99dSChuanxiao Dong card->ext_csd.enhanced_area_size = -EINVAL; 1686709de99dSChuanxiao Dong } else { 1687709de99dSChuanxiao Dong card->ext_csd.erase_group_def = 1; 1688709de99dSChuanxiao Dong /* 1689709de99dSChuanxiao Dong * enable ERASE_GRP_DEF successfully. 1690709de99dSChuanxiao Dong * This will affect the erase size, so 1691709de99dSChuanxiao Dong * here need to reset erase size 1692709de99dSChuanxiao Dong */ 1693709de99dSChuanxiao Dong mmc_set_erase_size(card); 1694709de99dSChuanxiao Dong } 1695709de99dSChuanxiao Dong } 1696709de99dSChuanxiao Dong 1697709de99dSChuanxiao Dong /* 169841e2a489SPhilip Rakity * Ensure eMMC user default partition is enabled 169941e2a489SPhilip Rakity */ 1700371a689fSAndrei Warkentin if (card->ext_csd.part_config & EXT_CSD_PART_CONFIG_ACC_MASK) { 1701371a689fSAndrei Warkentin card->ext_csd.part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK; 1702371a689fSAndrei Warkentin err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONFIG, 1703371a689fSAndrei Warkentin card->ext_csd.part_config, 1704371a689fSAndrei Warkentin card->ext_csd.part_time); 1705371a689fSAndrei Warkentin if (err && err != -EBADMSG) 1706371a689fSAndrei Warkentin goto free_card; 170741e2a489SPhilip Rakity } 170841e2a489SPhilip Rakity 170941e2a489SPhilip Rakity /* 171043235679SUlf Hansson * Enable power_off_notification byte in the ext_csd register 1711bec8726aSGirish K S */ 171243235679SUlf Hansson if (card->ext_csd.rev >= 6) { 1713bec8726aSGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1714bec8726aSGirish K S EXT_CSD_POWER_OFF_NOTIFICATION, 1715bec8726aSGirish K S EXT_CSD_POWER_ON, 1716bec8726aSGirish K S card->ext_csd.generic_cmd6_time); 1717bec8726aSGirish K S if (err && err != -EBADMSG) 1718bec8726aSGirish K S goto free_card; 1719bec8726aSGirish K S 172096a85d54SGirish K S /* 172196a85d54SGirish K S * The err can be -EBADMSG or 0, 172296a85d54SGirish K S * so check for success and update the flag 172396a85d54SGirish K S */ 1724bec8726aSGirish K S if (!err) 1725e6c08586SUlf Hansson card->ext_csd.power_off_notification = EXT_CSD_POWER_ON; 172696a85d54SGirish K S } 1727bec8726aSGirish K S 1728bec8726aSGirish K S /* 1729577fb131SSeungwon Jeon * Select timing interface 173089a73cf5SPierre Ossman */ 1731577fb131SSeungwon Jeon err = mmc_select_timing(card); 1732577fb131SSeungwon Jeon if (err) 173389a73cf5SPierre Ossman goto free_card; 173489a73cf5SPierre Ossman 1735a4924c71SGirish K S if (mmc_card_hs200(card)) { 1736577fb131SSeungwon Jeon err = mmc_hs200_tuning(card); 17374c4cb171SPhilip Rakity if (err) 17384b75bffcSAndrew Gabbasov goto free_card; 17390a5b6438SSeungwon Jeon 17400a5b6438SSeungwon Jeon err = mmc_select_hs400(card); 17410a5b6438SSeungwon Jeon if (err) 17424b75bffcSAndrew Gabbasov goto free_card; 1743577fb131SSeungwon Jeon } else if (mmc_card_hs(card)) { 1744577fb131SSeungwon Jeon /* Select the desired bus width optionally */ 1745577fb131SSeungwon Jeon err = mmc_select_bus_width(card); 17468b7be8f2SPeter Griffin if (err > 0) { 1747577fb131SSeungwon Jeon err = mmc_select_hs_ddr(card); 1748577fb131SSeungwon Jeon if (err) 17494b75bffcSAndrew Gabbasov goto free_card; 175089a73cf5SPierre Ossman } 1751ef0b27d4SAdrian Hunter } 175289a73cf5SPierre Ossman 1753881d1c25SSeungwon Jeon /* 17542385049dSSeungwon Jeon * Choose the power class with selected bus interface 17552385049dSSeungwon Jeon */ 17562385049dSSeungwon Jeon mmc_select_powerclass(card); 17572385049dSSeungwon Jeon 17582385049dSSeungwon Jeon /* 175952d0974eSSubhash Jadavani * Enable HPI feature (if supported) 176052d0974eSSubhash Jadavani */ 176152d0974eSSubhash Jadavani if (card->ext_csd.hpi) { 176252d0974eSSubhash Jadavani err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 176352d0974eSSubhash Jadavani EXT_CSD_HPI_MGMT, 1, 176452d0974eSSubhash Jadavani card->ext_csd.generic_cmd6_time); 176552d0974eSSubhash Jadavani if (err && err != -EBADMSG) 176652d0974eSSubhash Jadavani goto free_card; 176752d0974eSSubhash Jadavani if (err) { 17686606110dSJoe Perches pr_warn("%s: Enabling HPI failed\n", 176952d0974eSSubhash Jadavani mmc_hostname(card->host)); 177052d0974eSSubhash Jadavani err = 0; 177152d0974eSSubhash Jadavani } else 177252d0974eSSubhash Jadavani card->ext_csd.hpi_en = 1; 177352d0974eSSubhash Jadavani } 177452d0974eSSubhash Jadavani 177552d0974eSSubhash Jadavani /* 1776881d1c25SSeungwon Jeon * If cache size is higher than 0, this indicates 1777881d1c25SSeungwon Jeon * the existence of cache and it can be turned on. 1778881d1c25SSeungwon Jeon */ 17795320226aSPratibhasagar V if (!mmc_card_broken_hpi(card) && 17805320226aSPratibhasagar V card->ext_csd.cache_size > 0) { 1781881d1c25SSeungwon Jeon err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 17828bc0678bSSeungwon Jeon EXT_CSD_CACHE_CTRL, 1, 17838bc0678bSSeungwon Jeon card->ext_csd.generic_cmd6_time); 1784881d1c25SSeungwon Jeon if (err && err != -EBADMSG) 1785881d1c25SSeungwon Jeon goto free_card; 1786881d1c25SSeungwon Jeon 1787881d1c25SSeungwon Jeon /* 1788881d1c25SSeungwon Jeon * Only if no error, cache is turned on successfully. 1789881d1c25SSeungwon Jeon */ 17908bc0678bSSeungwon Jeon if (err) { 17916606110dSJoe Perches pr_warn("%s: Cache is supported, but failed to turn on (%d)\n", 17928bc0678bSSeungwon Jeon mmc_hostname(card->host), err); 17938bc0678bSSeungwon Jeon card->ext_csd.cache_ctrl = 0; 17948bc0678bSSeungwon Jeon err = 0; 17958bc0678bSSeungwon Jeon } else { 17968bc0678bSSeungwon Jeon card->ext_csd.cache_ctrl = 1; 17978bc0678bSSeungwon Jeon } 1798881d1c25SSeungwon Jeon } 1799881d1c25SSeungwon Jeon 1800abd9ac14SSeungwon Jeon /* 1801abd9ac14SSeungwon Jeon * The mandatory minimum values are defined for packed command. 1802abd9ac14SSeungwon Jeon * read: 5, write: 3 1803abd9ac14SSeungwon Jeon */ 1804abd9ac14SSeungwon Jeon if (card->ext_csd.max_packed_writes >= 3 && 1805abd9ac14SSeungwon Jeon card->ext_csd.max_packed_reads >= 5 && 1806abd9ac14SSeungwon Jeon host->caps2 & MMC_CAP2_PACKED_CMD) { 1807abd9ac14SSeungwon Jeon err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1808abd9ac14SSeungwon Jeon EXT_CSD_EXP_EVENTS_CTRL, 1809abd9ac14SSeungwon Jeon EXT_CSD_PACKED_EVENT_EN, 1810abd9ac14SSeungwon Jeon card->ext_csd.generic_cmd6_time); 1811abd9ac14SSeungwon Jeon if (err && err != -EBADMSG) 1812abd9ac14SSeungwon Jeon goto free_card; 1813abd9ac14SSeungwon Jeon if (err) { 1814abd9ac14SSeungwon Jeon pr_warn("%s: Enabling packed event failed\n", 1815abd9ac14SSeungwon Jeon mmc_hostname(card->host)); 1816abd9ac14SSeungwon Jeon card->ext_csd.packed_event_en = 0; 1817abd9ac14SSeungwon Jeon err = 0; 1818abd9ac14SSeungwon Jeon } else { 1819abd9ac14SSeungwon Jeon card->ext_csd.packed_event_en = 1; 1820abd9ac14SSeungwon Jeon } 1821abd9ac14SSeungwon Jeon } 1822abd9ac14SSeungwon Jeon 18236abaa0c9SPierre Ossman if (!oldcard) 18247ea239d9SPierre Ossman host->card = card; 18257ea239d9SPierre Ossman 182617b0429dSPierre Ossman return 0; 18276abaa0c9SPierre Ossman 18286abaa0c9SPierre Ossman free_card: 18296abaa0c9SPierre Ossman if (!oldcard) 18306abaa0c9SPierre Ossman mmc_remove_card(card); 18316abaa0c9SPierre Ossman err: 1832adf66a0dSPierre Ossman return err; 18336abaa0c9SPierre Ossman } 18346abaa0c9SPierre Ossman 183507a68216SUlf Hansson static int mmc_can_sleep(struct mmc_card *card) 183607a68216SUlf Hansson { 183707a68216SUlf Hansson return (card && card->ext_csd.rev >= 3); 183807a68216SUlf Hansson } 183907a68216SUlf Hansson 184007a68216SUlf Hansson static int mmc_sleep(struct mmc_host *host) 184107a68216SUlf Hansson { 1842c7836d15SMasahiro Yamada struct mmc_command cmd = {}; 184307a68216SUlf Hansson struct mmc_card *card = host->card; 1844cb962e04SUlf Hansson unsigned int timeout_ms = DIV_ROUND_UP(card->ext_csd.sa_timeout, 10000); 184507a68216SUlf Hansson int err; 184607a68216SUlf Hansson 1847436f8daaSAdrian Hunter /* Re-tuning can't be done once the card is deselected */ 1848436f8daaSAdrian Hunter mmc_retune_hold(host); 1849436f8daaSAdrian Hunter 185007a68216SUlf Hansson err = mmc_deselect_cards(host); 185107a68216SUlf Hansson if (err) 1852436f8daaSAdrian Hunter goto out_release; 185307a68216SUlf Hansson 185407a68216SUlf Hansson cmd.opcode = MMC_SLEEP_AWAKE; 185507a68216SUlf Hansson cmd.arg = card->rca << 16; 185607a68216SUlf Hansson cmd.arg |= 1 << 15; 185707a68216SUlf Hansson 1858cb962e04SUlf Hansson /* 1859cb962e04SUlf Hansson * If the max_busy_timeout of the host is specified, validate it against 1860cb962e04SUlf Hansson * the sleep cmd timeout. A failure means we need to prevent the host 1861cb962e04SUlf Hansson * from doing hw busy detection, which is done by converting to a R1 1862cb962e04SUlf Hansson * response instead of a R1B. 1863cb962e04SUlf Hansson */ 1864cb962e04SUlf Hansson if (host->max_busy_timeout && (timeout_ms > host->max_busy_timeout)) { 1865cb962e04SUlf Hansson cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; 1866cb962e04SUlf Hansson } else { 186707a68216SUlf Hansson cmd.flags = MMC_RSP_R1B | MMC_CMD_AC; 1868cb962e04SUlf Hansson cmd.busy_timeout = timeout_ms; 1869cb962e04SUlf Hansson } 1870cb962e04SUlf Hansson 187107a68216SUlf Hansson err = mmc_wait_for_cmd(host, &cmd, 0); 187207a68216SUlf Hansson if (err) 1873436f8daaSAdrian Hunter goto out_release; 187407a68216SUlf Hansson 187507a68216SUlf Hansson /* 187607a68216SUlf Hansson * If the host does not wait while the card signals busy, then we will 187707a68216SUlf Hansson * will have to wait the sleep/awake timeout. Note, we cannot use the 187807a68216SUlf Hansson * SEND_STATUS command to poll the status because that command (and most 187907a68216SUlf Hansson * others) is invalid while the card sleeps. 188007a68216SUlf Hansson */ 1881cb962e04SUlf Hansson if (!cmd.busy_timeout || !(host->caps & MMC_CAP_WAIT_WHILE_BUSY)) 1882cb962e04SUlf Hansson mmc_delay(timeout_ms); 188307a68216SUlf Hansson 1884436f8daaSAdrian Hunter out_release: 1885436f8daaSAdrian Hunter mmc_retune_release(host); 188607a68216SUlf Hansson return err; 188707a68216SUlf Hansson } 188807a68216SUlf Hansson 1889e6c08586SUlf Hansson static int mmc_can_poweroff_notify(const struct mmc_card *card) 1890e6c08586SUlf Hansson { 1891e6c08586SUlf Hansson return card && 1892e6c08586SUlf Hansson mmc_card_mmc(card) && 1893e6c08586SUlf Hansson (card->ext_csd.power_off_notification == EXT_CSD_POWER_ON); 1894e6c08586SUlf Hansson } 1895e6c08586SUlf Hansson 1896e6c08586SUlf Hansson static int mmc_poweroff_notify(struct mmc_card *card, unsigned int notify_type) 1897e6c08586SUlf Hansson { 1898e6c08586SUlf Hansson unsigned int timeout = card->ext_csd.generic_cmd6_time; 1899e6c08586SUlf Hansson int err; 1900e6c08586SUlf Hansson 1901e6c08586SUlf Hansson /* Use EXT_CSD_POWER_OFF_SHORT as default notification type. */ 1902e6c08586SUlf Hansson if (notify_type == EXT_CSD_POWER_OFF_LONG) 1903e6c08586SUlf Hansson timeout = card->ext_csd.power_off_longtime; 1904e6c08586SUlf Hansson 1905878e200bSUlf Hansson err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1906e6c08586SUlf Hansson EXT_CSD_POWER_OFF_NOTIFICATION, 1907aa33ce3cSUlf Hansson notify_type, timeout, 0, true, false, false); 1908e6c08586SUlf Hansson if (err) 1909e6c08586SUlf Hansson pr_err("%s: Power Off Notification timed out, %u\n", 1910e6c08586SUlf Hansson mmc_hostname(card->host), timeout); 1911e6c08586SUlf Hansson 1912e6c08586SUlf Hansson /* Disable the power off notification after the switch operation. */ 1913e6c08586SUlf Hansson card->ext_csd.power_off_notification = EXT_CSD_NO_POWER_NOTIFICATION; 1914e6c08586SUlf Hansson 1915e6c08586SUlf Hansson return err; 1916e6c08586SUlf Hansson } 1917e6c08586SUlf Hansson 19186abaa0c9SPierre Ossman /* 19196abaa0c9SPierre Ossman * Host is being removed. Free up the current card. 19206abaa0c9SPierre Ossman */ 19216abaa0c9SPierre Ossman static void mmc_remove(struct mmc_host *host) 19226abaa0c9SPierre Ossman { 19236abaa0c9SPierre Ossman mmc_remove_card(host->card); 19246abaa0c9SPierre Ossman host->card = NULL; 19256abaa0c9SPierre Ossman } 19266abaa0c9SPierre Ossman 19276abaa0c9SPierre Ossman /* 1928d3049504SAdrian Hunter * Card detection - card is alive. 1929d3049504SAdrian Hunter */ 1930d3049504SAdrian Hunter static int mmc_alive(struct mmc_host *host) 1931d3049504SAdrian Hunter { 1932d3049504SAdrian Hunter return mmc_send_status(host->card, NULL); 1933d3049504SAdrian Hunter } 1934d3049504SAdrian Hunter 1935d3049504SAdrian Hunter /* 19366abaa0c9SPierre Ossman * Card detection callback from host. 19376abaa0c9SPierre Ossman */ 19386abaa0c9SPierre Ossman static void mmc_detect(struct mmc_host *host) 19396abaa0c9SPierre Ossman { 19406abaa0c9SPierre Ossman int err; 19416abaa0c9SPierre Ossman 1942e94cfef6SUlf Hansson mmc_get_card(host->card); 19436abaa0c9SPierre Ossman 19446abaa0c9SPierre Ossman /* 19456abaa0c9SPierre Ossman * Just check if our card has been removed. 19466abaa0c9SPierre Ossman */ 1947d3049504SAdrian Hunter err = _mmc_detect_card_removed(host); 19486abaa0c9SPierre Ossman 1949e94cfef6SUlf Hansson mmc_put_card(host->card); 19507ea239d9SPierre Ossman 195117b0429dSPierre Ossman if (err) { 19524101c16aSPierre Ossman mmc_remove(host); 19536abaa0c9SPierre Ossman 19546abaa0c9SPierre Ossman mmc_claim_host(host); 19556abaa0c9SPierre Ossman mmc_detach_bus(host); 19567f7e4129SUlf Hansson mmc_power_off(host); 19576abaa0c9SPierre Ossman mmc_release_host(host); 19586abaa0c9SPierre Ossman } 19596abaa0c9SPierre Ossman } 19606abaa0c9SPierre Ossman 196103d071fcSUlf Hansson static int _mmc_suspend(struct mmc_host *host, bool is_suspend) 19626abaa0c9SPierre Ossman { 1963c3805467SBalaji T K int err = 0; 196403d071fcSUlf Hansson unsigned int notify_type = is_suspend ? EXT_CSD_POWER_OFF_SHORT : 196503d071fcSUlf Hansson EXT_CSD_POWER_OFF_LONG; 1966c3805467SBalaji T K 19676abaa0c9SPierre Ossman mmc_claim_host(host); 1968881d926dSMaya Erez 19699ec775f7SUlf Hansson if (mmc_card_suspended(host->card)) 19709ec775f7SUlf Hansson goto out; 19719ec775f7SUlf Hansson 197239b9431bSUlf Hansson if (mmc_card_doing_bkops(host->card)) { 197339b9431bSUlf Hansson err = mmc_stop_bkops(host->card); 197439b9431bSUlf Hansson if (err) 197539b9431bSUlf Hansson goto out; 197639b9431bSUlf Hansson } 197739b9431bSUlf Hansson 197810e5d965SUlf Hansson err = mmc_flush_cache(host->card); 1979881d926dSMaya Erez if (err) 1980881d926dSMaya Erez goto out; 1981881d926dSMaya Erez 198243235679SUlf Hansson if (mmc_can_poweroff_notify(host->card) && 198353275c21SUlf Hansson ((host->caps2 & MMC_CAP2_FULL_PWR_CYCLE) || !is_suspend)) 198403d071fcSUlf Hansson err = mmc_poweroff_notify(host->card, notify_type); 198507a68216SUlf Hansson else if (mmc_can_sleep(host->card)) 198607a68216SUlf Hansson err = mmc_sleep(host); 1987e6c08586SUlf Hansson else if (!mmc_host_is_spi(host)) 198885e727edSJaehoon Chung err = mmc_deselect_cards(host); 198995cdfb72SNicolas Pitre 19909ec775f7SUlf Hansson if (!err) { 199174590263SUlf Hansson mmc_power_off(host); 19929ec775f7SUlf Hansson mmc_card_set_suspended(host->card); 19939ec775f7SUlf Hansson } 1994881d926dSMaya Erez out: 1995881d926dSMaya Erez mmc_release_host(host); 1996c3805467SBalaji T K return err; 19976abaa0c9SPierre Ossman } 19986abaa0c9SPierre Ossman 19996abaa0c9SPierre Ossman /* 20000cb403a2SUlf Hansson * Suspend callback 200103d071fcSUlf Hansson */ 200203d071fcSUlf Hansson static int mmc_suspend(struct mmc_host *host) 200303d071fcSUlf Hansson { 20040cb403a2SUlf Hansson int err; 20050cb403a2SUlf Hansson 20060cb403a2SUlf Hansson err = _mmc_suspend(host, true); 20070cb403a2SUlf Hansson if (!err) { 20080cb403a2SUlf Hansson pm_runtime_disable(&host->card->dev); 20090cb403a2SUlf Hansson pm_runtime_set_suspended(&host->card->dev); 20100cb403a2SUlf Hansson } 20110cb403a2SUlf Hansson 20120cb403a2SUlf Hansson return err; 201303d071fcSUlf Hansson } 201403d071fcSUlf Hansson 201503d071fcSUlf Hansson /* 20166abaa0c9SPierre Ossman * This function tries to determine if the same card is still present 20176abaa0c9SPierre Ossman * and, if so, restore all state to it. 20186abaa0c9SPierre Ossman */ 20190cb403a2SUlf Hansson static int _mmc_resume(struct mmc_host *host) 20206abaa0c9SPierre Ossman { 20219ec775f7SUlf Hansson int err = 0; 20226abaa0c9SPierre Ossman 20236abaa0c9SPierre Ossman mmc_claim_host(host); 20249ec775f7SUlf Hansson 20259ec775f7SUlf Hansson if (!mmc_card_suspended(host->card)) 20269ec775f7SUlf Hansson goto out; 20279ec775f7SUlf Hansson 202869041150SUlf Hansson mmc_power_up(host, host->card->ocr); 202969041150SUlf Hansson err = mmc_init_card(host, host->card->ocr, host->card); 20309ec775f7SUlf Hansson mmc_card_clr_suspended(host->card); 20312986d0bfSPierre Ossman 20329ec775f7SUlf Hansson out: 20339ec775f7SUlf Hansson mmc_release_host(host); 203495cdfb72SNicolas Pitre return err; 20356abaa0c9SPierre Ossman } 20366abaa0c9SPierre Ossman 20379ec775f7SUlf Hansson /* 20389ec775f7SUlf Hansson * Shutdown callback 20399ec775f7SUlf Hansson */ 20409ec775f7SUlf Hansson static int mmc_shutdown(struct mmc_host *host) 20419ec775f7SUlf Hansson { 20429ec775f7SUlf Hansson int err = 0; 20439ec775f7SUlf Hansson 20449ec775f7SUlf Hansson /* 20459ec775f7SUlf Hansson * In a specific case for poweroff notify, we need to resume the card 20469ec775f7SUlf Hansson * before we can shutdown it properly. 20479ec775f7SUlf Hansson */ 20489ec775f7SUlf Hansson if (mmc_can_poweroff_notify(host->card) && 20499ec775f7SUlf Hansson !(host->caps2 & MMC_CAP2_FULL_PWR_CYCLE)) 20500cb403a2SUlf Hansson err = _mmc_resume(host); 20519ec775f7SUlf Hansson 20529ec775f7SUlf Hansson if (!err) 20539ec775f7SUlf Hansson err = _mmc_suspend(host, false); 20549ec775f7SUlf Hansson 20559ec775f7SUlf Hansson return err; 20569ec775f7SUlf Hansson } 2057c4d770d7SUlf Hansson 2058c4d770d7SUlf Hansson /* 20590cb403a2SUlf Hansson * Callback for resume. 20600cb403a2SUlf Hansson */ 20610cb403a2SUlf Hansson static int mmc_resume(struct mmc_host *host) 20620cb403a2SUlf Hansson { 20630cb403a2SUlf Hansson pm_runtime_enable(&host->card->dev); 2064c29536e8SUlf Hansson return 0; 20650cb403a2SUlf Hansson } 20660cb403a2SUlf Hansson 20670cb403a2SUlf Hansson /* 2068c4d770d7SUlf Hansson * Callback for runtime_suspend. 2069c4d770d7SUlf Hansson */ 2070c4d770d7SUlf Hansson static int mmc_runtime_suspend(struct mmc_host *host) 2071c4d770d7SUlf Hansson { 2072c4d770d7SUlf Hansson int err; 2073c4d770d7SUlf Hansson 2074c4d770d7SUlf Hansson if (!(host->caps & MMC_CAP_AGGRESSIVE_PM)) 2075c4d770d7SUlf Hansson return 0; 2076c4d770d7SUlf Hansson 20770cb403a2SUlf Hansson err = _mmc_suspend(host, true); 20780cc81a8cSUlf Hansson if (err) 2079f42cf8d6SMasanari Iida pr_err("%s: error %d doing aggressive suspend\n", 2080c4d770d7SUlf Hansson mmc_hostname(host), err); 2081c4d770d7SUlf Hansson 2082c4d770d7SUlf Hansson return err; 2083c4d770d7SUlf Hansson } 2084c4d770d7SUlf Hansson 2085c4d770d7SUlf Hansson /* 2086c4d770d7SUlf Hansson * Callback for runtime_resume. 2087c4d770d7SUlf Hansson */ 2088c4d770d7SUlf Hansson static int mmc_runtime_resume(struct mmc_host *host) 2089c4d770d7SUlf Hansson { 2090c4d770d7SUlf Hansson int err; 2091c4d770d7SUlf Hansson 20920cb403a2SUlf Hansson err = _mmc_resume(host); 2093520322d9SAdrian Hunter if (err && err != -ENOMEDIUM) 2094c29536e8SUlf Hansson pr_err("%s: error %d doing runtime resume\n", 2095c4d770d7SUlf Hansson mmc_hostname(host), err); 2096c4d770d7SUlf Hansson 2097c4d770d7SUlf Hansson return 0; 2098c4d770d7SUlf Hansson } 2099c4d770d7SUlf Hansson 2100f855a371SJohan Rudholm int mmc_can_reset(struct mmc_card *card) 2101f855a371SJohan Rudholm { 2102f855a371SJohan Rudholm u8 rst_n_function; 2103f855a371SJohan Rudholm 2104f855a371SJohan Rudholm rst_n_function = card->ext_csd.rst_n_function; 2105f855a371SJohan Rudholm if ((rst_n_function & EXT_CSD_RST_N_EN_MASK) != EXT_CSD_RST_N_ENABLED) 2106f855a371SJohan Rudholm return 0; 2107f855a371SJohan Rudholm return 1; 2108f855a371SJohan Rudholm } 2109f855a371SJohan Rudholm EXPORT_SYMBOL(mmc_can_reset); 2110f855a371SJohan Rudholm 2111f855a371SJohan Rudholm static int mmc_reset(struct mmc_host *host) 2112f855a371SJohan Rudholm { 2113f855a371SJohan Rudholm struct mmc_card *card = host->card; 2114f855a371SJohan Rudholm 2115437db4c6SAdrian Hunter /* 2116437db4c6SAdrian Hunter * In the case of recovery, we can't expect flushing the cache to work 2117437db4c6SAdrian Hunter * always, but we have a go and ignore errors. 2118437db4c6SAdrian Hunter */ 2119437db4c6SAdrian Hunter mmc_flush_cache(host->card); 2120437db4c6SAdrian Hunter 21214e6c7178SGwendal Grignou if ((host->caps & MMC_CAP_HW_RESET) && host->ops->hw_reset && 21224e6c7178SGwendal Grignou mmc_can_reset(card)) { 21234e6c7178SGwendal Grignou /* If the card accept RST_n signal, send it. */ 2124f855a371SJohan Rudholm mmc_set_clock(host, host->f_init); 2125f855a371SJohan Rudholm host->ops->hw_reset(host); 2126f855a371SJohan Rudholm /* Set initial state and call mmc_set_ios */ 2127f855a371SJohan Rudholm mmc_set_initial_state(host); 21284e6c7178SGwendal Grignou } else { 21294e6c7178SGwendal Grignou /* Do a brute force power cycle */ 21304e6c7178SGwendal Grignou mmc_power_cycle(host, card->ocr); 21314e6c7178SGwendal Grignou } 2132364549ddSUlf Hansson return mmc_init_card(host, card->ocr, card); 2133f855a371SJohan Rudholm } 2134f855a371SJohan Rudholm 21359feae246SAdrian Hunter static const struct mmc_bus_ops mmc_ops = { 21369feae246SAdrian Hunter .remove = mmc_remove, 21379feae246SAdrian Hunter .detect = mmc_detect, 21389feae246SAdrian Hunter .suspend = mmc_suspend, 21399feae246SAdrian Hunter .resume = mmc_resume, 2140c4d770d7SUlf Hansson .runtime_suspend = mmc_runtime_suspend, 2141c4d770d7SUlf Hansson .runtime_resume = mmc_runtime_resume, 2142d3049504SAdrian Hunter .alive = mmc_alive, 2143486fdbbcSUlf Hansson .shutdown = mmc_shutdown, 2144f855a371SJohan Rudholm .reset = mmc_reset, 21459feae246SAdrian Hunter }; 21469feae246SAdrian Hunter 21476abaa0c9SPierre Ossman /* 21486abaa0c9SPierre Ossman * Starting point for MMC card init. 21496abaa0c9SPierre Ossman */ 2150807e8e40SAndy Ross int mmc_attach_mmc(struct mmc_host *host) 21516abaa0c9SPierre Ossman { 21526abaa0c9SPierre Ossman int err; 215369041150SUlf Hansson u32 ocr, rocr; 21546abaa0c9SPierre Ossman 2155d84075c8SPierre Ossman WARN_ON(!host->claimed); 21566abaa0c9SPierre Ossman 215744669034SStefan Nilsson XK /* Set correct bus mode for MMC before attempting attach */ 215844669034SStefan Nilsson XK if (!mmc_host_is_spi(host)) 215944669034SStefan Nilsson XK mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); 216044669034SStefan Nilsson XK 2161807e8e40SAndy Ross err = mmc_send_op_cond(host, 0, &ocr); 2162807e8e40SAndy Ross if (err) 2163807e8e40SAndy Ross return err; 2164807e8e40SAndy Ross 21652501c917SUlf Hansson mmc_attach_bus(host, &mmc_ops); 21668f230f45STakashi Iwai if (host->ocr_avail_mmc) 21678f230f45STakashi Iwai host->ocr_avail = host->ocr_avail_mmc; 21686abaa0c9SPierre Ossman 21696abaa0c9SPierre Ossman /* 2170af517150SDavid Brownell * We need to get OCR a different way for SPI. 2171af517150SDavid Brownell */ 2172af517150SDavid Brownell if (mmc_host_is_spi(host)) { 2173af517150SDavid Brownell err = mmc_spi_read_ocr(host, 1, &ocr); 2174af517150SDavid Brownell if (err) 2175af517150SDavid Brownell goto err; 2176af517150SDavid Brownell } 2177af517150SDavid Brownell 217869041150SUlf Hansson rocr = mmc_select_voltage(host, ocr); 21796abaa0c9SPierre Ossman 21806abaa0c9SPierre Ossman /* 21816abaa0c9SPierre Ossman * Can we support the voltage of the card? 21826abaa0c9SPierre Ossman */ 218369041150SUlf Hansson if (!rocr) { 2184109b5bedSPierre Ossman err = -EINVAL; 21856abaa0c9SPierre Ossman goto err; 2186109b5bedSPierre Ossman } 21876abaa0c9SPierre Ossman 21886abaa0c9SPierre Ossman /* 21896abaa0c9SPierre Ossman * Detect and init the card. 21906abaa0c9SPierre Ossman */ 219169041150SUlf Hansson err = mmc_init_card(host, rocr, NULL); 219217b0429dSPierre Ossman if (err) 21936abaa0c9SPierre Ossman goto err; 21946abaa0c9SPierre Ossman 21956abaa0c9SPierre Ossman mmc_release_host(host); 21964101c16aSPierre Ossman err = mmc_add_card(host->card); 21977ea239d9SPierre Ossman if (err) 21982986d0bfSPierre Ossman goto remove_card; 21997ea239d9SPierre Ossman 22002860d060SSergei Shtylyov mmc_claim_host(host); 22017ea239d9SPierre Ossman return 0; 22027ea239d9SPierre Ossman 22032986d0bfSPierre Ossman remove_card: 22046abaa0c9SPierre Ossman mmc_remove_card(host->card); 22052986d0bfSPierre Ossman mmc_claim_host(host); 2206807e8e40SAndy Ross host->card = NULL; 22077ea239d9SPierre Ossman err: 22087ea239d9SPierre Ossman mmc_detach_bus(host); 22097ea239d9SPierre Ossman 2210a3c76eb9SGirish K S pr_err("%s: error %d whilst initialising MMC card\n", 2211109b5bedSPierre Ossman mmc_hostname(host), err); 2212109b5bedSPierre Ossman 2213adf66a0dSPierre Ossman return err; 22147ea239d9SPierre Ossman } 2215