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" 2828fc64afSShawn Lin #include "quirks.h" 294c4cb171SPhilip Rakity #include "sd_ops.h" 3052c8212dSUlf Hansson #include "pwrseq.h" 317ea239d9SPierre Ossman 32fe1b5700SUlf Hansson #define DEFAULT_CMD6_TIMEOUT_MS 500 33fe1b5700SUlf Hansson 347ea239d9SPierre Ossman static const unsigned int tran_exp[] = { 357ea239d9SPierre Ossman 10000, 100000, 1000000, 10000000, 367ea239d9SPierre Ossman 0, 0, 0, 0 377ea239d9SPierre Ossman }; 387ea239d9SPierre Ossman 397ea239d9SPierre Ossman static const unsigned char tran_mant[] = { 407ea239d9SPierre Ossman 0, 10, 12, 13, 15, 20, 25, 30, 417ea239d9SPierre Ossman 35, 40, 45, 50, 55, 60, 70, 80, 427ea239d9SPierre Ossman }; 437ea239d9SPierre Ossman 444406ae21SShawn Lin static const unsigned int taac_exp[] = { 457ea239d9SPierre Ossman 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, 467ea239d9SPierre Ossman }; 477ea239d9SPierre Ossman 484406ae21SShawn Lin static const unsigned int taac_mant[] = { 497ea239d9SPierre Ossman 0, 10, 12, 13, 15, 20, 25, 30, 507ea239d9SPierre Ossman 35, 40, 45, 50, 55, 60, 70, 80, 517ea239d9SPierre Ossman }; 527ea239d9SPierre Ossman 537ea239d9SPierre Ossman #define UNSTUFF_BITS(resp,start,size) \ 547ea239d9SPierre Ossman ({ \ 557ea239d9SPierre Ossman const int __size = size; \ 567ea239d9SPierre Ossman const u32 __mask = (__size < 32 ? 1 << __size : 0) - 1; \ 577ea239d9SPierre Ossman const int __off = 3 - ((start) / 32); \ 587ea239d9SPierre Ossman const int __shft = (start) & 31; \ 597ea239d9SPierre Ossman u32 __res; \ 607ea239d9SPierre Ossman \ 617ea239d9SPierre Ossman __res = resp[__off] >> __shft; \ 627ea239d9SPierre Ossman if (__size + __shft > 32) \ 637ea239d9SPierre Ossman __res |= resp[__off-1] << ((32 - __shft) % 32); \ 647ea239d9SPierre Ossman __res & __mask; \ 657ea239d9SPierre Ossman }) 667ea239d9SPierre Ossman 677ea239d9SPierre Ossman /* 687ea239d9SPierre Ossman * Given the decoded CSD structure, decode the raw CID to our CID structure. 697ea239d9SPierre Ossman */ 70bd766312SPierre Ossman static int mmc_decode_cid(struct mmc_card *card) 717ea239d9SPierre Ossman { 727ea239d9SPierre Ossman u32 *resp = card->raw_cid; 737ea239d9SPierre Ossman 747ea239d9SPierre Ossman /* 757ea239d9SPierre Ossman * The selection of the format here is based upon published 767ea239d9SPierre Ossman * specs from sandisk and from what people have reported. 777ea239d9SPierre Ossman */ 787ea239d9SPierre Ossman switch (card->csd.mmca_vsn) { 797ea239d9SPierre Ossman case 0: /* MMC v1.0 - v1.2 */ 807ea239d9SPierre Ossman case 1: /* MMC v1.4 */ 817ea239d9SPierre Ossman card->cid.manfid = UNSTUFF_BITS(resp, 104, 24); 827ea239d9SPierre Ossman card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); 837ea239d9SPierre Ossman card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); 847ea239d9SPierre Ossman card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); 857ea239d9SPierre Ossman card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); 867ea239d9SPierre Ossman card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); 877ea239d9SPierre Ossman card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); 887ea239d9SPierre Ossman card->cid.prod_name[6] = UNSTUFF_BITS(resp, 48, 8); 897ea239d9SPierre Ossman card->cid.hwrev = UNSTUFF_BITS(resp, 44, 4); 907ea239d9SPierre Ossman card->cid.fwrev = UNSTUFF_BITS(resp, 40, 4); 917ea239d9SPierre Ossman card->cid.serial = UNSTUFF_BITS(resp, 16, 24); 927ea239d9SPierre Ossman card->cid.month = UNSTUFF_BITS(resp, 12, 4); 937ea239d9SPierre Ossman card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; 947ea239d9SPierre Ossman break; 957ea239d9SPierre Ossman 967ea239d9SPierre Ossman case 2: /* MMC v2.0 - v2.2 */ 977ea239d9SPierre Ossman case 3: /* MMC v3.1 - v3.3 */ 987ea239d9SPierre Ossman case 4: /* MMC v4 */ 997ea239d9SPierre Ossman card->cid.manfid = UNSTUFF_BITS(resp, 120, 8); 1007ea239d9SPierre Ossman card->cid.oemid = UNSTUFF_BITS(resp, 104, 16); 1017ea239d9SPierre Ossman card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); 1027ea239d9SPierre Ossman card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); 1037ea239d9SPierre Ossman card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); 1047ea239d9SPierre Ossman card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); 1057ea239d9SPierre Ossman card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); 1067ea239d9SPierre Ossman card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); 10751e7e8b6SBernie Thompson card->cid.prv = UNSTUFF_BITS(resp, 48, 8); 1087ea239d9SPierre Ossman card->cid.serial = UNSTUFF_BITS(resp, 16, 32); 1097ea239d9SPierre Ossman card->cid.month = UNSTUFF_BITS(resp, 12, 4); 1107ea239d9SPierre Ossman card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; 1117ea239d9SPierre Ossman break; 1127ea239d9SPierre Ossman 1137ea239d9SPierre Ossman default: 114a3c76eb9SGirish K S pr_err("%s: card has unknown MMCA version %d\n", 1157ea239d9SPierre Ossman mmc_hostname(card->host), card->csd.mmca_vsn); 116bd766312SPierre Ossman return -EINVAL; 1177ea239d9SPierre Ossman } 118bd766312SPierre Ossman 119bd766312SPierre Ossman return 0; 1207ea239d9SPierre Ossman } 1217ea239d9SPierre Ossman 122dfe86cbaSAdrian Hunter static void mmc_set_erase_size(struct mmc_card *card) 123dfe86cbaSAdrian Hunter { 124dfe86cbaSAdrian Hunter if (card->ext_csd.erase_group_def & 1) 125dfe86cbaSAdrian Hunter card->erase_size = card->ext_csd.hc_erase_size; 126dfe86cbaSAdrian Hunter else 127dfe86cbaSAdrian Hunter card->erase_size = card->csd.erase_size; 128dfe86cbaSAdrian Hunter 129dfe86cbaSAdrian Hunter mmc_init_erase(card); 130dfe86cbaSAdrian Hunter } 131dfe86cbaSAdrian Hunter 1327ea239d9SPierre Ossman /* 1337ea239d9SPierre Ossman * Given a 128-bit response, decode to our card CSD structure. 1347ea239d9SPierre Ossman */ 135bd766312SPierre Ossman static int mmc_decode_csd(struct mmc_card *card) 1367ea239d9SPierre Ossman { 1377ea239d9SPierre Ossman struct mmc_csd *csd = &card->csd; 138dfe86cbaSAdrian Hunter unsigned int e, m, a, b; 1397ea239d9SPierre Ossman u32 *resp = card->raw_csd; 1407ea239d9SPierre Ossman 1417ea239d9SPierre Ossman /* 1427ea239d9SPierre Ossman * We only understand CSD structure v1.1 and v1.2. 1437ea239d9SPierre Ossman * v1.2 has extra information in bits 15, 11 and 10. 1446da24b78SKyungmin Park * We also support eMMC v4.4 & v4.41. 1457ea239d9SPierre Ossman */ 1466da24b78SKyungmin Park csd->structure = UNSTUFF_BITS(resp, 126, 2); 1476da24b78SKyungmin Park if (csd->structure == 0) { 148a3c76eb9SGirish K S pr_err("%s: unrecognised CSD structure version %d\n", 1496da24b78SKyungmin Park mmc_hostname(card->host), csd->structure); 150bd766312SPierre Ossman return -EINVAL; 1517ea239d9SPierre Ossman } 1527ea239d9SPierre Ossman 1537ea239d9SPierre Ossman csd->mmca_vsn = UNSTUFF_BITS(resp, 122, 4); 1547ea239d9SPierre Ossman m = UNSTUFF_BITS(resp, 115, 4); 1557ea239d9SPierre Ossman e = UNSTUFF_BITS(resp, 112, 3); 1564406ae21SShawn Lin csd->taac_ns = (taac_exp[e] * taac_mant[m] + 9) / 10; 1574406ae21SShawn Lin csd->taac_clks = UNSTUFF_BITS(resp, 104, 8) * 100; 1587ea239d9SPierre Ossman 1597ea239d9SPierre Ossman m = UNSTUFF_BITS(resp, 99, 4); 1607ea239d9SPierre Ossman e = UNSTUFF_BITS(resp, 96, 3); 1617ea239d9SPierre Ossman csd->max_dtr = tran_exp[e] * tran_mant[m]; 1627ea239d9SPierre Ossman csd->cmdclass = UNSTUFF_BITS(resp, 84, 12); 1637ea239d9SPierre Ossman 1647ea239d9SPierre Ossman e = UNSTUFF_BITS(resp, 47, 3); 1657ea239d9SPierre Ossman m = UNSTUFF_BITS(resp, 62, 12); 1667ea239d9SPierre Ossman csd->capacity = (1 + m) << (e + 2); 1677ea239d9SPierre Ossman 1687ea239d9SPierre Ossman csd->read_blkbits = UNSTUFF_BITS(resp, 80, 4); 1697ea239d9SPierre Ossman csd->read_partial = UNSTUFF_BITS(resp, 79, 1); 1707ea239d9SPierre Ossman csd->write_misalign = UNSTUFF_BITS(resp, 78, 1); 1717ea239d9SPierre Ossman csd->read_misalign = UNSTUFF_BITS(resp, 77, 1); 1723d705d14SSascha Hauer csd->dsr_imp = UNSTUFF_BITS(resp, 76, 1); 1737ea239d9SPierre Ossman csd->r2w_factor = UNSTUFF_BITS(resp, 26, 3); 1747ea239d9SPierre Ossman csd->write_blkbits = UNSTUFF_BITS(resp, 22, 4); 1757ea239d9SPierre Ossman csd->write_partial = UNSTUFF_BITS(resp, 21, 1); 176bd766312SPierre Ossman 177dfe86cbaSAdrian Hunter if (csd->write_blkbits >= 9) { 178dfe86cbaSAdrian Hunter a = UNSTUFF_BITS(resp, 42, 5); 179dfe86cbaSAdrian Hunter b = UNSTUFF_BITS(resp, 37, 5); 180dfe86cbaSAdrian Hunter csd->erase_size = (a + 1) * (b + 1); 181dfe86cbaSAdrian Hunter csd->erase_size <<= csd->write_blkbits - 9; 182dfe86cbaSAdrian Hunter } 183dfe86cbaSAdrian Hunter 184bd766312SPierre Ossman return 0; 1857ea239d9SPierre Ossman } 1867ea239d9SPierre Ossman 18796cf5f02SSeungwon Jeon static void mmc_select_card_type(struct mmc_card *card) 18896cf5f02SSeungwon Jeon { 18996cf5f02SSeungwon Jeon struct mmc_host *host = card->host; 1900a5b6438SSeungwon Jeon u8 card_type = card->ext_csd.raw_card_type; 1915f1a4dd0SLee Jones u32 caps = host->caps, caps2 = host->caps2; 192577fb131SSeungwon Jeon unsigned int hs_max_dtr = 0, hs200_max_dtr = 0; 1932415c0efSSeungwon Jeon unsigned int avail_type = 0; 19496cf5f02SSeungwon Jeon 19596cf5f02SSeungwon Jeon if (caps & MMC_CAP_MMC_HIGHSPEED && 1962415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS_26) { 1972415c0efSSeungwon Jeon hs_max_dtr = MMC_HIGH_26_MAX_DTR; 1982415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS_26; 1992415c0efSSeungwon Jeon } 2002415c0efSSeungwon Jeon 2012415c0efSSeungwon Jeon if (caps & MMC_CAP_MMC_HIGHSPEED && 2022415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS_52) { 20396cf5f02SSeungwon Jeon hs_max_dtr = MMC_HIGH_52_MAX_DTR; 2042415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS_52; 2052415c0efSSeungwon Jeon } 20696cf5f02SSeungwon Jeon 20720f921bbSUlf Hansson if (caps & (MMC_CAP_1_8V_DDR | MMC_CAP_3_3V_DDR) && 2082415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_DDR_1_8V) { 20996cf5f02SSeungwon Jeon hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; 2102415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_DDR_1_8V; 2112415c0efSSeungwon Jeon } 21296cf5f02SSeungwon Jeon 2132415c0efSSeungwon Jeon if (caps & MMC_CAP_1_2V_DDR && 2142415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_DDR_1_2V) { 2152415c0efSSeungwon Jeon hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; 2162415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_DDR_1_2V; 2172415c0efSSeungwon Jeon } 2182415c0efSSeungwon Jeon 2192415c0efSSeungwon Jeon if (caps2 & MMC_CAP2_HS200_1_8V_SDR && 2202415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS200_1_8V) { 221577fb131SSeungwon Jeon hs200_max_dtr = MMC_HS200_MAX_DTR; 2222415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS200_1_8V; 2232415c0efSSeungwon Jeon } 2242415c0efSSeungwon Jeon 2252415c0efSSeungwon Jeon if (caps2 & MMC_CAP2_HS200_1_2V_SDR && 2262415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS200_1_2V) { 227577fb131SSeungwon Jeon hs200_max_dtr = MMC_HS200_MAX_DTR; 2282415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS200_1_2V; 2292415c0efSSeungwon Jeon } 23096cf5f02SSeungwon Jeon 2310a5b6438SSeungwon Jeon if (caps2 & MMC_CAP2_HS400_1_8V && 2320a5b6438SSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS400_1_8V) { 2330a5b6438SSeungwon Jeon hs200_max_dtr = MMC_HS200_MAX_DTR; 2340a5b6438SSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS400_1_8V; 2350a5b6438SSeungwon Jeon } 2360a5b6438SSeungwon Jeon 2370a5b6438SSeungwon Jeon if (caps2 & MMC_CAP2_HS400_1_2V && 2380a5b6438SSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS400_1_2V) { 2390a5b6438SSeungwon Jeon hs200_max_dtr = MMC_HS200_MAX_DTR; 2400a5b6438SSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS400_1_2V; 2410a5b6438SSeungwon Jeon } 2420a5b6438SSeungwon Jeon 24381ac2af6SShawn Lin if ((caps2 & MMC_CAP2_HS400_ES) && 24481ac2af6SShawn Lin card->ext_csd.strobe_support && 24581ac2af6SShawn Lin (avail_type & EXT_CSD_CARD_TYPE_HS400)) 24681ac2af6SShawn Lin avail_type |= EXT_CSD_CARD_TYPE_HS400ES; 24781ac2af6SShawn Lin 24896cf5f02SSeungwon Jeon card->ext_csd.hs_max_dtr = hs_max_dtr; 249577fb131SSeungwon Jeon card->ext_csd.hs200_max_dtr = hs200_max_dtr; 2502415c0efSSeungwon Jeon card->mmc_avail_type = avail_type; 25196cf5f02SSeungwon Jeon } 25296cf5f02SSeungwon Jeon 253b4493eeaSGrégory Soutadé static void mmc_manage_enhanced_area(struct mmc_card *card, u8 *ext_csd) 254b4493eeaSGrégory Soutadé { 255994324bbSGrégory Soutadé u8 hc_erase_grp_sz, hc_wp_grp_sz; 256994324bbSGrégory Soutadé 257994324bbSGrégory Soutadé /* 258994324bbSGrégory Soutadé * Disable these attributes by default 259994324bbSGrégory Soutadé */ 260994324bbSGrégory Soutadé card->ext_csd.enhanced_area_offset = -EINVAL; 261994324bbSGrégory Soutadé card->ext_csd.enhanced_area_size = -EINVAL; 262b4493eeaSGrégory Soutadé 263b4493eeaSGrégory Soutadé /* 264b4493eeaSGrégory Soutadé * Enhanced area feature support -- check whether the eMMC 265b4493eeaSGrégory Soutadé * card has the Enhanced area enabled. If so, export enhanced 266b4493eeaSGrégory Soutadé * area offset and size to user by adding sysfs interface. 267b4493eeaSGrégory Soutadé */ 268b4493eeaSGrégory Soutadé if ((ext_csd[EXT_CSD_PARTITION_SUPPORT] & 0x2) && 269b4493eeaSGrégory Soutadé (ext_csd[EXT_CSD_PARTITION_ATTRIBUTE] & 0x1)) { 270994324bbSGrégory Soutadé if (card->ext_csd.partition_setting_completed) { 271b4493eeaSGrégory Soutadé hc_erase_grp_sz = 272b4493eeaSGrégory Soutadé ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 273b4493eeaSGrégory Soutadé hc_wp_grp_sz = 274b4493eeaSGrégory Soutadé ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 275b4493eeaSGrégory Soutadé 276b4493eeaSGrégory Soutadé /* 277b4493eeaSGrégory Soutadé * calculate the enhanced data area offset, in bytes 278b4493eeaSGrégory Soutadé */ 279b4493eeaSGrégory Soutadé card->ext_csd.enhanced_area_offset = 280ded8a5f9SKuninori Morimoto (((unsigned long long)ext_csd[139]) << 24) + 281ded8a5f9SKuninori Morimoto (((unsigned long long)ext_csd[138]) << 16) + 282ded8a5f9SKuninori Morimoto (((unsigned long long)ext_csd[137]) << 8) + 283ded8a5f9SKuninori Morimoto (((unsigned long long)ext_csd[136])); 284b4493eeaSGrégory Soutadé if (mmc_card_blockaddr(card)) 285b4493eeaSGrégory Soutadé card->ext_csd.enhanced_area_offset <<= 9; 286b4493eeaSGrégory Soutadé /* 287b4493eeaSGrégory Soutadé * calculate the enhanced data area size, in kilobytes 288b4493eeaSGrégory Soutadé */ 289b4493eeaSGrégory Soutadé card->ext_csd.enhanced_area_size = 290b4493eeaSGrégory Soutadé (ext_csd[142] << 16) + (ext_csd[141] << 8) + 291b4493eeaSGrégory Soutadé ext_csd[140]; 292b4493eeaSGrégory Soutadé card->ext_csd.enhanced_area_size *= 293b4493eeaSGrégory Soutadé (size_t)(hc_erase_grp_sz * hc_wp_grp_sz); 294b4493eeaSGrégory Soutadé card->ext_csd.enhanced_area_size <<= 9; 295b4493eeaSGrégory Soutadé } else { 296994324bbSGrégory Soutadé pr_warn("%s: defines enhanced area without partition setting complete\n", 297994324bbSGrégory Soutadé mmc_hostname(card->host)); 298994324bbSGrégory Soutadé } 299b4493eeaSGrégory Soutadé } 300b4493eeaSGrégory Soutadé } 301b4493eeaSGrégory Soutadé 3024facdde1SUlf Hansson static void mmc_part_add(struct mmc_card *card, unsigned int size, 3034facdde1SUlf Hansson unsigned int part_cfg, char *name, int idx, bool ro, 3044facdde1SUlf Hansson int area_type) 3054facdde1SUlf Hansson { 3064facdde1SUlf Hansson card->part[card->nr_parts].size = size; 3074facdde1SUlf Hansson card->part[card->nr_parts].part_cfg = part_cfg; 3084facdde1SUlf Hansson sprintf(card->part[card->nr_parts].name, name, idx); 3094facdde1SUlf Hansson card->part[card->nr_parts].force_ro = ro; 3104facdde1SUlf Hansson card->part[card->nr_parts].area_type = area_type; 3114facdde1SUlf Hansson card->nr_parts++; 3124facdde1SUlf Hansson } 3134facdde1SUlf Hansson 314b4493eeaSGrégory Soutadé static void mmc_manage_gp_partitions(struct mmc_card *card, u8 *ext_csd) 315b4493eeaSGrégory Soutadé { 316b4493eeaSGrégory Soutadé int idx; 317994324bbSGrégory Soutadé u8 hc_erase_grp_sz, hc_wp_grp_sz; 318994324bbSGrégory Soutadé unsigned int part_size; 319b4493eeaSGrégory Soutadé 320b4493eeaSGrégory Soutadé /* 321b4493eeaSGrégory Soutadé * General purpose partition feature support -- 322b4493eeaSGrégory Soutadé * If ext_csd has the size of general purpose partitions, 323b4493eeaSGrégory Soutadé * set size, part_cfg, partition name in mmc_part. 324b4493eeaSGrégory Soutadé */ 325b4493eeaSGrégory Soutadé if (ext_csd[EXT_CSD_PARTITION_SUPPORT] & 326b4493eeaSGrégory Soutadé EXT_CSD_PART_SUPPORT_PART_EN) { 327b4493eeaSGrégory Soutadé hc_erase_grp_sz = 328b4493eeaSGrégory Soutadé ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 329b4493eeaSGrégory Soutadé hc_wp_grp_sz = 330b4493eeaSGrégory Soutadé ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 331b4493eeaSGrégory Soutadé 332b4493eeaSGrégory Soutadé for (idx = 0; idx < MMC_NUM_GP_PARTITION; idx++) { 333b4493eeaSGrégory Soutadé if (!ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3] && 334b4493eeaSGrégory Soutadé !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] && 335b4493eeaSGrégory Soutadé !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2]) 336b4493eeaSGrégory Soutadé continue; 337994324bbSGrégory Soutadé if (card->ext_csd.partition_setting_completed == 0) { 338994324bbSGrégory Soutadé pr_warn("%s: has partition size defined without partition complete\n", 339994324bbSGrégory Soutadé mmc_hostname(card->host)); 340994324bbSGrégory Soutadé break; 341994324bbSGrégory Soutadé } 342b4493eeaSGrégory Soutadé part_size = 343b4493eeaSGrégory Soutadé (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2] 344b4493eeaSGrégory Soutadé << 16) + 345b4493eeaSGrégory Soutadé (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] 346b4493eeaSGrégory Soutadé << 8) + 347b4493eeaSGrégory Soutadé ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3]; 348b4493eeaSGrégory Soutadé part_size *= (size_t)(hc_erase_grp_sz * 349b4493eeaSGrégory Soutadé hc_wp_grp_sz); 350b4493eeaSGrégory Soutadé mmc_part_add(card, part_size << 19, 351b4493eeaSGrégory Soutadé EXT_CSD_PART_CONFIG_ACC_GP0 + idx, 352b4493eeaSGrégory Soutadé "gp%d", idx, false, 353b4493eeaSGrégory Soutadé MMC_BLK_DATA_AREA_GP); 354b4493eeaSGrégory Soutadé } 355b4493eeaSGrégory Soutadé } 356b4493eeaSGrégory Soutadé } 357b4493eeaSGrégory Soutadé 3581c447116SAdrian Hunter /* Minimum partition switch timeout in milliseconds */ 3591c447116SAdrian Hunter #define MMC_MIN_PART_SWITCH_TIME 300 3601c447116SAdrian Hunter 36108ee80ccSPhilip Rakity /* 36208ee80ccSPhilip Rakity * Decode extended CSD. 36308ee80ccSPhilip Rakity */ 364076ec38aSUlf Hansson static int mmc_decode_ext_csd(struct mmc_card *card, u8 *ext_csd) 36508ee80ccSPhilip Rakity { 366e0c368d5SNamjae Jeon int err = 0, idx; 367e0c368d5SNamjae Jeon unsigned int part_size; 36881f8a7beSHans de Goede struct device_node *np; 36981f8a7beSHans de Goede bool broken_hpi = false; 37008ee80ccSPhilip Rakity 3716da24b78SKyungmin Park /* Version is coded in the CSD_STRUCTURE byte in the EXT_CSD register */ 372f39b2dd9SPhilip Rakity card->ext_csd.raw_ext_csd_structure = ext_csd[EXT_CSD_STRUCTURE]; 3736da24b78SKyungmin Park if (card->csd.structure == 3) { 374f39b2dd9SPhilip Rakity if (card->ext_csd.raw_ext_csd_structure > 2) { 375a3c76eb9SGirish K S pr_err("%s: unrecognised EXT_CSD structure " 3768fdd8521SPierre Ossman "version %d\n", mmc_hostname(card->host), 377f39b2dd9SPhilip Rakity card->ext_csd.raw_ext_csd_structure); 3786da24b78SKyungmin Park err = -EINVAL; 3796da24b78SKyungmin Park goto out; 3806da24b78SKyungmin Park } 3816da24b78SKyungmin Park } 3826da24b78SKyungmin Park 38381f8a7beSHans de Goede np = mmc_of_find_child_device(card->host, 0); 38481f8a7beSHans de Goede if (np && of_device_is_compatible(np, "mmc-card")) 38581f8a7beSHans de Goede broken_hpi = of_property_read_bool(np, "broken-hpi"); 38681f8a7beSHans de Goede of_node_put(np); 38781f8a7beSHans de Goede 38803a59437SRomain Izard /* 38903a59437SRomain Izard * The EXT_CSD format is meant to be forward compatible. As long 39003a59437SRomain Izard * as CSD_STRUCTURE does not change, all values for EXT_CSD_REV 39103a59437SRomain Izard * are authorized, see JEDEC JESD84-B50 section B.8. 39203a59437SRomain Izard */ 3936da24b78SKyungmin Park card->ext_csd.rev = ext_csd[EXT_CSD_REV]; 394d7604d76SPierre Ossman 3955320226aSPratibhasagar V /* fixup device after ext_csd revision field is updated */ 3965320226aSPratibhasagar V mmc_fixup_device(card, mmc_ext_csd_fixups); 3975320226aSPratibhasagar V 398f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[0] = ext_csd[EXT_CSD_SEC_CNT + 0]; 399f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[1] = ext_csd[EXT_CSD_SEC_CNT + 1]; 400f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[2] = ext_csd[EXT_CSD_SEC_CNT + 2]; 401f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[3] = ext_csd[EXT_CSD_SEC_CNT + 3]; 402b1ebe384SJarkko Lavinen if (card->ext_csd.rev >= 2) { 4037ea239d9SPierre Ossman card->ext_csd.sectors = 4047ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 0] << 0 | 4057ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 1] << 8 | 4067ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 2] << 16 | 4077ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 3] << 24; 408fc8a0985SHanumath Prasad 409fc8a0985SHanumath Prasad /* Cards with density > 2GiB are sector addressed */ 410fc8a0985SHanumath Prasad if (card->ext_csd.sectors > (2u * 1024 * 1024 * 1024) / 512) 4117ea239d9SPierre Ossman mmc_card_set_blockaddr(card); 412d7604d76SPierre Ossman } 41396cf5f02SSeungwon Jeon 41481ac2af6SShawn Lin card->ext_csd.strobe_support = ext_csd[EXT_CSD_STROBE_SUPPORT]; 415f39b2dd9SPhilip Rakity card->ext_csd.raw_card_type = ext_csd[EXT_CSD_CARD_TYPE]; 41696cf5f02SSeungwon Jeon mmc_select_card_type(card); 4177ea239d9SPierre Ossman 418f39b2dd9SPhilip Rakity card->ext_csd.raw_s_a_timeout = ext_csd[EXT_CSD_S_A_TIMEOUT]; 419f39b2dd9SPhilip Rakity card->ext_csd.raw_erase_timeout_mult = 420f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; 421f39b2dd9SPhilip Rakity card->ext_csd.raw_hc_erase_grp_size = 422f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 423b1ebe384SJarkko Lavinen if (card->ext_csd.rev >= 3) { 424b1ebe384SJarkko Lavinen u8 sa_shift = ext_csd[EXT_CSD_S_A_TIMEOUT]; 425371a689fSAndrei Warkentin card->ext_csd.part_config = ext_csd[EXT_CSD_PART_CONFIG]; 426371a689fSAndrei Warkentin 427371a689fSAndrei Warkentin /* EXT_CSD value is in units of 10ms, but we store in ms */ 428371a689fSAndrei Warkentin card->ext_csd.part_time = 10 * ext_csd[EXT_CSD_PART_SWITCH_TIME]; 4291c447116SAdrian Hunter /* Some eMMC set the value too low so set a minimum */ 4301c447116SAdrian Hunter if (card->ext_csd.part_time && 4311c447116SAdrian Hunter card->ext_csd.part_time < MMC_MIN_PART_SWITCH_TIME) 4321c447116SAdrian Hunter card->ext_csd.part_time = MMC_MIN_PART_SWITCH_TIME; 433b1ebe384SJarkko Lavinen 434b1ebe384SJarkko Lavinen /* Sleep / awake timeout in 100ns units */ 435b1ebe384SJarkko Lavinen if (sa_shift > 0 && sa_shift <= 0x17) 436b1ebe384SJarkko Lavinen card->ext_csd.sa_timeout = 437b1ebe384SJarkko Lavinen 1 << ext_csd[EXT_CSD_S_A_TIMEOUT]; 438dfe86cbaSAdrian Hunter card->ext_csd.erase_group_def = 439dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_ERASE_GROUP_DEF]; 440dfe86cbaSAdrian Hunter card->ext_csd.hc_erase_timeout = 300 * 441dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; 442dfe86cbaSAdrian Hunter card->ext_csd.hc_erase_size = 443dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] << 10; 444f4c5522bSAndrei Warkentin 445f4c5522bSAndrei Warkentin card->ext_csd.rel_sectors = ext_csd[EXT_CSD_REL_WR_SEC_C]; 446371a689fSAndrei Warkentin 447371a689fSAndrei Warkentin /* 448371a689fSAndrei Warkentin * There are two boot regions of equal size, defined in 449371a689fSAndrei Warkentin * multiples of 128K. 450371a689fSAndrei Warkentin */ 451e0c368d5SNamjae Jeon if (ext_csd[EXT_CSD_BOOT_MULT] && mmc_boot_partition_access(card->host)) { 452e0c368d5SNamjae Jeon for (idx = 0; idx < MMC_NUM_BOOT_PARTITION; idx++) { 453e0c368d5SNamjae Jeon part_size = ext_csd[EXT_CSD_BOOT_MULT] << 17; 454e0c368d5SNamjae Jeon mmc_part_add(card, part_size, 455e0c368d5SNamjae Jeon EXT_CSD_PART_CONFIG_ACC_BOOT0 + idx, 456add710eaSJohan Rudholm "boot%d", idx, true, 457add710eaSJohan Rudholm MMC_BLK_DATA_AREA_BOOT); 458e0c368d5SNamjae Jeon } 459e0c368d5SNamjae Jeon } 460b1ebe384SJarkko Lavinen } 461b1ebe384SJarkko Lavinen 462f39b2dd9SPhilip Rakity card->ext_csd.raw_hc_erase_gap_size = 463dd13b4edSJurgen Heeks ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 464f39b2dd9SPhilip Rakity card->ext_csd.raw_sec_trim_mult = 465f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_SEC_TRIM_MULT]; 466f39b2dd9SPhilip Rakity card->ext_csd.raw_sec_erase_mult = 467f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_SEC_ERASE_MULT]; 468f39b2dd9SPhilip Rakity card->ext_csd.raw_sec_feature_support = 469f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; 470f39b2dd9SPhilip Rakity card->ext_csd.raw_trim_mult = 471f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_TRIM_MULT]; 472836dc2feSPhilip Rakity card->ext_csd.raw_partition_support = ext_csd[EXT_CSD_PARTITION_SUPPORT]; 473b097e07fSAdrian Hunter card->ext_csd.raw_driver_strength = ext_csd[EXT_CSD_DRIVER_STRENGTH]; 474dfe86cbaSAdrian Hunter if (card->ext_csd.rev >= 4) { 47569803d4fSGrégory Soutadé if (ext_csd[EXT_CSD_PARTITION_SETTING_COMPLETED] & 47669803d4fSGrégory Soutadé EXT_CSD_PART_SETTING_COMPLETED) 47769803d4fSGrégory Soutadé card->ext_csd.partition_setting_completed = 1; 47869803d4fSGrégory Soutadé else 47969803d4fSGrégory Soutadé card->ext_csd.partition_setting_completed = 0; 48069803d4fSGrégory Soutadé 481b4493eeaSGrégory Soutadé mmc_manage_enhanced_area(card, ext_csd); 482709de99dSChuanxiao Dong 483b4493eeaSGrégory Soutadé mmc_manage_gp_partitions(card, ext_csd); 484e0c368d5SNamjae Jeon 485dfe86cbaSAdrian Hunter card->ext_csd.sec_trim_mult = 486dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_SEC_TRIM_MULT]; 487dfe86cbaSAdrian Hunter card->ext_csd.sec_erase_mult = 488dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_SEC_ERASE_MULT]; 489dfe86cbaSAdrian Hunter card->ext_csd.sec_feature_support = 490dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; 491dfe86cbaSAdrian Hunter card->ext_csd.trim_timeout = 300 * 492dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_TRIM_MULT]; 493add710eaSJohan Rudholm 494add710eaSJohan Rudholm /* 495add710eaSJohan Rudholm * Note that the call to mmc_part_add above defaults to read 496add710eaSJohan Rudholm * only. If this default assumption is changed, the call must 497add710eaSJohan Rudholm * take into account the value of boot_locked below. 498add710eaSJohan Rudholm */ 499add710eaSJohan Rudholm card->ext_csd.boot_ro_lock = ext_csd[EXT_CSD_BOOT_WP]; 500add710eaSJohan Rudholm card->ext_csd.boot_ro_lockable = true; 50160443712SFredrik Soderstedt 50260443712SFredrik Soderstedt /* Save power class values */ 50360443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_52_195 = 50460443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_52_195]; 50560443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_26_195 = 50660443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_26_195]; 50760443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_52_360 = 50860443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_52_360]; 50960443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_26_360 = 51060443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_26_360]; 51160443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_200_195 = 51260443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_200_195]; 51360443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_200_360 = 51460443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_200_360]; 51560443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_ddr_52_195 = 51660443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_DDR_52_195]; 51760443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_ddr_52_360 = 51860443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_DDR_52_360]; 5190a5b6438SSeungwon Jeon card->ext_csd.raw_pwr_cl_ddr_200_360 = 5200a5b6438SSeungwon Jeon ext_csd[EXT_CSD_PWR_CL_DDR_200_360]; 521dfe86cbaSAdrian Hunter } 522dfe86cbaSAdrian Hunter 523b2499518SAdrian Hunter if (card->ext_csd.rev >= 5) { 5247c4f10acSRomain Izard /* Adjust production date as per JEDEC JESD84-B451 */ 5257c4f10acSRomain Izard if (card->cid.year < 2010) 5267c4f10acSRomain Izard card->cid.year += 16; 5277c4f10acSRomain Izard 528950d56acSJaehoon Chung /* check whether the eMMC card supports BKOPS */ 5295320226aSPratibhasagar V if (!mmc_card_broken_hpi(card) && 5305320226aSPratibhasagar V ext_csd[EXT_CSD_BKOPS_SUPPORT] & 0x1) { 531950d56acSJaehoon Chung card->ext_csd.bkops = 1; 5320501be64SAlexey Skidanov card->ext_csd.man_bkops_en = 5330501be64SAlexey Skidanov (ext_csd[EXT_CSD_BKOPS_EN] & 5340501be64SAlexey Skidanov EXT_CSD_MANUAL_BKOPS_MASK); 535950d56acSJaehoon Chung card->ext_csd.raw_bkops_status = 536950d56acSJaehoon Chung ext_csd[EXT_CSD_BKOPS_STATUS]; 5376962c2fbSUri Yanai if (card->ext_csd.man_bkops_en) 5386962c2fbSUri Yanai pr_debug("%s: MAN_BKOPS_EN bit is set\n", 539950d56acSJaehoon Chung mmc_hostname(card->host)); 540efff8e78SUri Yanai card->ext_csd.auto_bkops_en = 541efff8e78SUri Yanai (ext_csd[EXT_CSD_BKOPS_EN] & 542efff8e78SUri Yanai EXT_CSD_AUTO_BKOPS_MASK); 543efff8e78SUri Yanai if (card->ext_csd.auto_bkops_en) 544efff8e78SUri Yanai pr_debug("%s: AUTO_BKOPS_EN bit is set\n", 545efff8e78SUri Yanai mmc_hostname(card->host)); 546950d56acSJaehoon Chung } 547950d56acSJaehoon Chung 548eb0d8f13SJaehoon Chung /* check whether the eMMC card supports HPI */ 5495320226aSPratibhasagar V if (!mmc_card_broken_hpi(card) && 5505320226aSPratibhasagar V !broken_hpi && (ext_csd[EXT_CSD_HPI_FEATURES] & 0x1)) { 551eb0d8f13SJaehoon Chung card->ext_csd.hpi = 1; 552eb0d8f13SJaehoon Chung if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x2) 553eb0d8f13SJaehoon Chung card->ext_csd.hpi_cmd = MMC_STOP_TRANSMISSION; 554eb0d8f13SJaehoon Chung else 555eb0d8f13SJaehoon Chung card->ext_csd.hpi_cmd = MMC_SEND_STATUS; 556eb0d8f13SJaehoon Chung /* 557eb0d8f13SJaehoon Chung * Indicate the maximum timeout to close 558eb0d8f13SJaehoon Chung * a command interrupted by HPI 559eb0d8f13SJaehoon Chung */ 560eb0d8f13SJaehoon Chung card->ext_csd.out_of_int_time = 561eb0d8f13SJaehoon Chung ext_csd[EXT_CSD_OUT_OF_INTERRUPT_TIME] * 10; 562eb0d8f13SJaehoon Chung } 563eb0d8f13SJaehoon Chung 564f4c5522bSAndrei Warkentin card->ext_csd.rel_param = ext_csd[EXT_CSD_WR_REL_PARAM]; 565b2499518SAdrian Hunter card->ext_csd.rst_n_function = ext_csd[EXT_CSD_RST_N_FUNCTION]; 566090d25feSLoic Pallardy 567090d25feSLoic Pallardy /* 568090d25feSLoic Pallardy * RPMB regions are defined in multiples of 128K. 569090d25feSLoic Pallardy */ 570090d25feSLoic Pallardy card->ext_csd.raw_rpmb_size_mult = ext_csd[EXT_CSD_RPMB_MULT]; 571d0123ccaSBalaji T K if (ext_csd[EXT_CSD_RPMB_MULT] && mmc_host_cmd23(card->host)) { 572090d25feSLoic Pallardy mmc_part_add(card, ext_csd[EXT_CSD_RPMB_MULT] << 17, 573090d25feSLoic Pallardy EXT_CSD_PART_CONFIG_ACC_RPMB, 574090d25feSLoic Pallardy "rpmb", 0, false, 575090d25feSLoic Pallardy MMC_BLK_DATA_AREA_RPMB); 576090d25feSLoic Pallardy } 577b2499518SAdrian Hunter } 578f4c5522bSAndrei Warkentin 5795238acbeSAndrei Warkentin card->ext_csd.raw_erased_mem_count = ext_csd[EXT_CSD_ERASED_MEM_CONT]; 580dfe86cbaSAdrian Hunter if (ext_csd[EXT_CSD_ERASED_MEM_CONT]) 581dfe86cbaSAdrian Hunter card->erased_byte = 0xFF; 582dfe86cbaSAdrian Hunter else 583dfe86cbaSAdrian Hunter card->erased_byte = 0x0; 584dfe86cbaSAdrian Hunter 585336c716aSSeungwon Jeon /* eMMC v4.5 or later */ 586fe1b5700SUlf Hansson card->ext_csd.generic_cmd6_time = DEFAULT_CMD6_TIMEOUT_MS; 587bec8726aSGirish K S if (card->ext_csd.rev >= 6) { 588336c716aSSeungwon Jeon card->ext_csd.feature_support |= MMC_DISCARD_FEATURE; 589336c716aSSeungwon Jeon 590b23cf0bdSSeungwon Jeon card->ext_csd.generic_cmd6_time = 10 * 591b23cf0bdSSeungwon Jeon ext_csd[EXT_CSD_GENERIC_CMD6_TIME]; 592bec8726aSGirish K S card->ext_csd.power_off_longtime = 10 * 593bec8726aSGirish K S ext_csd[EXT_CSD_POWER_OFF_LONG_TIME]; 594b23cf0bdSSeungwon Jeon 595881d1c25SSeungwon Jeon card->ext_csd.cache_size = 596881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 0] << 0 | 597881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 1] << 8 | 598881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 2] << 16 | 599881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 3] << 24; 6004265900eSSaugata Das 6014265900eSSaugata Das if (ext_csd[EXT_CSD_DATA_SECTOR_SIZE] == 1) 6024265900eSSaugata Das card->ext_csd.data_sector_size = 4096; 6034265900eSSaugata Das else 6044265900eSSaugata Das card->ext_csd.data_sector_size = 512; 6054265900eSSaugata Das 6064265900eSSaugata Das if ((ext_csd[EXT_CSD_DATA_TAG_SUPPORT] & 1) && 6074265900eSSaugata Das (ext_csd[EXT_CSD_TAG_UNIT_SIZE] <= 8)) { 6084265900eSSaugata Das card->ext_csd.data_tag_unit_size = 6094265900eSSaugata Das ((unsigned int) 1 << ext_csd[EXT_CSD_TAG_UNIT_SIZE]) * 6104265900eSSaugata Das (card->ext_csd.data_sector_size); 6114265900eSSaugata Das } else { 6124265900eSSaugata Das card->ext_csd.data_tag_unit_size = 0; 6134265900eSSaugata Das } 614abd9ac14SSeungwon Jeon 615abd9ac14SSeungwon Jeon card->ext_csd.max_packed_writes = 616abd9ac14SSeungwon Jeon ext_csd[EXT_CSD_MAX_PACKED_WRITES]; 617abd9ac14SSeungwon Jeon card->ext_csd.max_packed_reads = 618abd9ac14SSeungwon Jeon ext_csd[EXT_CSD_MAX_PACKED_READS]; 619a5075eb9SSaugata Das } else { 620a5075eb9SSaugata Das card->ext_csd.data_sector_size = 512; 621336c716aSSeungwon Jeon } 622881d1c25SSeungwon Jeon 6230f762426SGwendal Grignou /* eMMC v5 or later */ 6240f762426SGwendal Grignou if (card->ext_csd.rev >= 7) { 6250f762426SGwendal Grignou memcpy(card->ext_csd.fwrev, &ext_csd[EXT_CSD_FIRMWARE_VERSION], 6260f762426SGwendal Grignou MMC_FIRMWARE_LEN); 6270f762426SGwendal Grignou card->ext_csd.ffu_capable = 6280f762426SGwendal Grignou (ext_csd[EXT_CSD_SUPPORTED_MODE] & 0x1) && 6290f762426SGwendal Grignou !(ext_csd[EXT_CSD_FW_CONFIG] & 0x1); 63046bc5c40SJungseung Lee 63146bc5c40SJungseung Lee card->ext_csd.pre_eol_info = ext_csd[EXT_CSD_PRE_EOL_INFO]; 63246bc5c40SJungseung Lee card->ext_csd.device_life_time_est_typ_a = 63346bc5c40SJungseung Lee ext_csd[EXT_CSD_DEVICE_LIFE_TIME_EST_TYP_A]; 63446bc5c40SJungseung Lee card->ext_csd.device_life_time_est_typ_b = 63546bc5c40SJungseung Lee ext_csd[EXT_CSD_DEVICE_LIFE_TIME_EST_TYP_B]; 6360f762426SGwendal Grignou } 637925ff3a7SAdrian Hunter 638925ff3a7SAdrian Hunter /* eMMC v5.1 or later */ 639925ff3a7SAdrian Hunter if (card->ext_csd.rev >= 8) { 640925ff3a7SAdrian Hunter card->ext_csd.cmdq_support = ext_csd[EXT_CSD_CMDQ_SUPPORT] & 641925ff3a7SAdrian Hunter EXT_CSD_CMDQ_SUPPORTED; 642925ff3a7SAdrian Hunter card->ext_csd.cmdq_depth = (ext_csd[EXT_CSD_CMDQ_DEPTH] & 643925ff3a7SAdrian Hunter EXT_CSD_CMDQ_DEPTH_MASK) + 1; 644925ff3a7SAdrian Hunter /* Exclude inefficiently small queue depths */ 645925ff3a7SAdrian Hunter if (card->ext_csd.cmdq_depth <= 2) { 646925ff3a7SAdrian Hunter card->ext_csd.cmdq_support = false; 647925ff3a7SAdrian Hunter card->ext_csd.cmdq_depth = 0; 648925ff3a7SAdrian Hunter } 649925ff3a7SAdrian Hunter if (card->ext_csd.cmdq_support) { 650925ff3a7SAdrian Hunter pr_debug("%s: Command Queue supported depth %u\n", 651925ff3a7SAdrian Hunter mmc_hostname(card->host), 652925ff3a7SAdrian Hunter card->ext_csd.cmdq_depth); 653925ff3a7SAdrian Hunter } 654925ff3a7SAdrian Hunter } 6557ea239d9SPierre Ossman out: 65608ee80ccSPhilip Rakity return err; 65708ee80ccSPhilip Rakity } 6587ea239d9SPierre Ossman 659076ec38aSUlf Hansson static int mmc_read_ext_csd(struct mmc_card *card) 660076ec38aSUlf Hansson { 661c197787cSUlf Hansson u8 *ext_csd; 662076ec38aSUlf Hansson int err; 663076ec38aSUlf Hansson 664c197787cSUlf Hansson if (!mmc_can_ext_csd(card)) 665c197787cSUlf Hansson return 0; 666c197787cSUlf Hansson 667076ec38aSUlf Hansson err = mmc_get_ext_csd(card, &ext_csd); 668c197787cSUlf Hansson if (err) { 669c197787cSUlf Hansson /* If the host or the card can't do the switch, 670c197787cSUlf Hansson * fail more gracefully. */ 671c197787cSUlf Hansson if ((err != -EINVAL) 672c197787cSUlf Hansson && (err != -ENOSYS) 673c197787cSUlf Hansson && (err != -EFAULT)) 674076ec38aSUlf Hansson return err; 675076ec38aSUlf Hansson 676c197787cSUlf Hansson /* 677c197787cSUlf Hansson * High capacity cards should have this "magic" size 678c197787cSUlf Hansson * stored in their CSD. 679c197787cSUlf Hansson */ 680c197787cSUlf Hansson if (card->csd.capacity == (4096 * 512)) { 681c197787cSUlf Hansson pr_err("%s: unable to read EXT_CSD on a possible high capacity card. Card will be ignored.\n", 682c197787cSUlf Hansson mmc_hostname(card->host)); 683c197787cSUlf Hansson } else { 684c197787cSUlf Hansson pr_warn("%s: unable to read EXT_CSD, performance might suffer\n", 685c197787cSUlf Hansson mmc_hostname(card->host)); 686c197787cSUlf Hansson err = 0; 687c197787cSUlf Hansson } 688c197787cSUlf Hansson 689c197787cSUlf Hansson return err; 690c197787cSUlf Hansson } 691c197787cSUlf Hansson 692076ec38aSUlf Hansson err = mmc_decode_ext_csd(card, ext_csd); 693076ec38aSUlf Hansson kfree(ext_csd); 694076ec38aSUlf Hansson return err; 695076ec38aSUlf Hansson } 696076ec38aSUlf Hansson 697f39b2dd9SPhilip Rakity static int mmc_compare_ext_csds(struct mmc_card *card, unsigned bus_width) 69808ee80ccSPhilip Rakity { 69908ee80ccSPhilip Rakity u8 *bw_ext_csd; 70008ee80ccSPhilip Rakity int err; 70108ee80ccSPhilip Rakity 702f39b2dd9SPhilip Rakity if (bus_width == MMC_BUS_WIDTH_1) 703f39b2dd9SPhilip Rakity return 0; 70408ee80ccSPhilip Rakity 705f39b2dd9SPhilip Rakity err = mmc_get_ext_csd(card, &bw_ext_csd); 706c197787cSUlf Hansson if (err) 707c197787cSUlf Hansson return err; 70808ee80ccSPhilip Rakity 70908ee80ccSPhilip Rakity /* only compare read only fields */ 710dd13b4edSJurgen Heeks err = !((card->ext_csd.raw_partition_support == 71108ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_PARTITION_SUPPORT]) && 712f39b2dd9SPhilip Rakity (card->ext_csd.raw_erased_mem_count == 71308ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_ERASED_MEM_CONT]) && 714f39b2dd9SPhilip Rakity (card->ext_csd.rev == 71508ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_REV]) && 716f39b2dd9SPhilip Rakity (card->ext_csd.raw_ext_csd_structure == 71708ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_STRUCTURE]) && 718f39b2dd9SPhilip Rakity (card->ext_csd.raw_card_type == 71908ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_CARD_TYPE]) && 720f39b2dd9SPhilip Rakity (card->ext_csd.raw_s_a_timeout == 72108ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_S_A_TIMEOUT]) && 722f39b2dd9SPhilip Rakity (card->ext_csd.raw_hc_erase_gap_size == 72308ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_HC_WP_GRP_SIZE]) && 724f39b2dd9SPhilip Rakity (card->ext_csd.raw_erase_timeout_mult == 72508ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]) && 726f39b2dd9SPhilip Rakity (card->ext_csd.raw_hc_erase_grp_size == 72708ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]) && 728f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_trim_mult == 72908ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_TRIM_MULT]) && 730f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_erase_mult == 73108ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_ERASE_MULT]) && 732f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_feature_support == 73308ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]) && 734f39b2dd9SPhilip Rakity (card->ext_csd.raw_trim_mult == 73508ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_TRIM_MULT]) && 736f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[0] == 737f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 0]) && 738f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[1] == 739f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 1]) && 740f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[2] == 741f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 2]) && 742f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[3] == 74360443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_SEC_CNT + 3]) && 74460443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_52_195 == 74560443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_52_195]) && 74660443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_26_195 == 74760443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_26_195]) && 74860443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_52_360 == 74960443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_52_360]) && 75060443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_26_360 == 75160443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_26_360]) && 75260443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_200_195 == 75360443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_200_195]) && 75460443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_200_360 == 75560443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_200_360]) && 75660443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_ddr_52_195 == 75760443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_195]) && 75860443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_ddr_52_360 == 7590a5b6438SSeungwon Jeon bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_360]) && 7600a5b6438SSeungwon Jeon (card->ext_csd.raw_pwr_cl_ddr_200_360 == 7610a5b6438SSeungwon Jeon bw_ext_csd[EXT_CSD_PWR_CL_DDR_200_360])); 7620a5b6438SSeungwon Jeon 76308ee80ccSPhilip Rakity if (err) 76408ee80ccSPhilip Rakity err = -EINVAL; 76508ee80ccSPhilip Rakity 76600b41b58SUlf Hansson kfree(bw_ext_csd); 7677ea239d9SPierre Ossman return err; 7687ea239d9SPierre Ossman } 7697ea239d9SPierre Ossman 77051ec92e2SPierre Ossman MMC_DEV_ATTR(cid, "%08x%08x%08x%08x\n", card->raw_cid[0], card->raw_cid[1], 77151ec92e2SPierre Ossman card->raw_cid[2], card->raw_cid[3]); 77251ec92e2SPierre Ossman MMC_DEV_ATTR(csd, "%08x%08x%08x%08x\n", card->raw_csd[0], card->raw_csd[1], 77351ec92e2SPierre Ossman card->raw_csd[2], card->raw_csd[3]); 77451ec92e2SPierre Ossman MMC_DEV_ATTR(date, "%02d/%04d\n", card->cid.month, card->cid.year); 775dfe86cbaSAdrian Hunter MMC_DEV_ATTR(erase_size, "%u\n", card->erase_size << 9); 776dfe86cbaSAdrian Hunter MMC_DEV_ATTR(preferred_erase_size, "%u\n", card->pref_erase << 9); 7770f762426SGwendal Grignou MMC_DEV_ATTR(ffu_capable, "%d\n", card->ext_csd.ffu_capable); 77851ec92e2SPierre Ossman MMC_DEV_ATTR(hwrev, "0x%x\n", card->cid.hwrev); 77951ec92e2SPierre Ossman MMC_DEV_ATTR(manfid, "0x%06x\n", card->cid.manfid); 78051ec92e2SPierre Ossman MMC_DEV_ATTR(name, "%s\n", card->cid.prod_name); 78151ec92e2SPierre Ossman MMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid); 78251e7e8b6SBernie Thompson MMC_DEV_ATTR(prv, "0x%x\n", card->cid.prv); 78304fa0540SJin Qian MMC_DEV_ATTR(rev, "0x%x\n", card->ext_csd.rev); 78480a780a1SBastian Stender MMC_DEV_ATTR(pre_eol_info, "0x%02x\n", card->ext_csd.pre_eol_info); 78546bc5c40SJungseung Lee MMC_DEV_ATTR(life_time, "0x%02x 0x%02x\n", 78646bc5c40SJungseung Lee card->ext_csd.device_life_time_est_typ_a, 78746bc5c40SJungseung Lee card->ext_csd.device_life_time_est_typ_b); 78851ec92e2SPierre Ossman MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial); 789709de99dSChuanxiao Dong MMC_DEV_ATTR(enhanced_area_offset, "%llu\n", 790709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset); 791709de99dSChuanxiao Dong MMC_DEV_ATTR(enhanced_area_size, "%u\n", card->ext_csd.enhanced_area_size); 792188cc042SLoic Pallardy MMC_DEV_ATTR(raw_rpmb_size_mult, "%#x\n", card->ext_csd.raw_rpmb_size_mult); 793188cc042SLoic Pallardy MMC_DEV_ATTR(rel_sectors, "%#x\n", card->ext_csd.rel_sectors); 794c892b0d8SBastian Stender MMC_DEV_ATTR(ocr, "0x%08x\n", card->ocr); 795974e85e9SHarish Jenny K N MMC_DEV_ATTR(rca, "0x%04x\n", card->rca); 796b658af71SAdrian Hunter MMC_DEV_ATTR(cmdq_en, "%d\n", card->ext_csd.cmdq_en); 79751ec92e2SPierre Ossman 7980f762426SGwendal Grignou static ssize_t mmc_fwrev_show(struct device *dev, 7990f762426SGwendal Grignou struct device_attribute *attr, 8000f762426SGwendal Grignou char *buf) 8010f762426SGwendal Grignou { 8020f762426SGwendal Grignou struct mmc_card *card = mmc_dev_to_card(dev); 8030f762426SGwendal Grignou 8040f762426SGwendal Grignou if (card->ext_csd.rev < 7) { 8050f762426SGwendal Grignou return sprintf(buf, "0x%x\n", card->cid.fwrev); 8060f762426SGwendal Grignou } else { 8070f762426SGwendal Grignou return sprintf(buf, "0x%*phN\n", MMC_FIRMWARE_LEN, 8080f762426SGwendal Grignou card->ext_csd.fwrev); 8090f762426SGwendal Grignou } 8100f762426SGwendal Grignou } 8110f762426SGwendal Grignou 8120f762426SGwendal Grignou static DEVICE_ATTR(fwrev, S_IRUGO, mmc_fwrev_show, NULL); 8130f762426SGwendal Grignou 8146825a606SBojan Prtvar static ssize_t mmc_dsr_show(struct device *dev, 8156825a606SBojan Prtvar struct device_attribute *attr, 8166825a606SBojan Prtvar char *buf) 8176825a606SBojan Prtvar { 8186825a606SBojan Prtvar struct mmc_card *card = mmc_dev_to_card(dev); 8196825a606SBojan Prtvar struct mmc_host *host = card->host; 8206825a606SBojan Prtvar 8216825a606SBojan Prtvar if (card->csd.dsr_imp && host->dsr_req) 8226825a606SBojan Prtvar return sprintf(buf, "0x%x\n", host->dsr); 8236825a606SBojan Prtvar else 8246825a606SBojan Prtvar /* return default DSR value */ 8256825a606SBojan Prtvar return sprintf(buf, "0x%x\n", 0x404); 8266825a606SBojan Prtvar } 8276825a606SBojan Prtvar 8286825a606SBojan Prtvar static DEVICE_ATTR(dsr, S_IRUGO, mmc_dsr_show, NULL); 8296825a606SBojan Prtvar 83051ec92e2SPierre Ossman static struct attribute *mmc_std_attrs[] = { 83151ec92e2SPierre Ossman &dev_attr_cid.attr, 83251ec92e2SPierre Ossman &dev_attr_csd.attr, 83351ec92e2SPierre Ossman &dev_attr_date.attr, 834dfe86cbaSAdrian Hunter &dev_attr_erase_size.attr, 835dfe86cbaSAdrian Hunter &dev_attr_preferred_erase_size.attr, 83651ec92e2SPierre Ossman &dev_attr_fwrev.attr, 8370f762426SGwendal Grignou &dev_attr_ffu_capable.attr, 83851ec92e2SPierre Ossman &dev_attr_hwrev.attr, 83951ec92e2SPierre Ossman &dev_attr_manfid.attr, 84051ec92e2SPierre Ossman &dev_attr_name.attr, 84151ec92e2SPierre Ossman &dev_attr_oemid.attr, 84251e7e8b6SBernie Thompson &dev_attr_prv.attr, 84304fa0540SJin Qian &dev_attr_rev.attr, 84446bc5c40SJungseung Lee &dev_attr_pre_eol_info.attr, 84546bc5c40SJungseung Lee &dev_attr_life_time.attr, 84651ec92e2SPierre Ossman &dev_attr_serial.attr, 847709de99dSChuanxiao Dong &dev_attr_enhanced_area_offset.attr, 848709de99dSChuanxiao Dong &dev_attr_enhanced_area_size.attr, 849188cc042SLoic Pallardy &dev_attr_raw_rpmb_size_mult.attr, 850188cc042SLoic Pallardy &dev_attr_rel_sectors.attr, 8515fb06af7SBojan Prtvar &dev_attr_ocr.attr, 852974e85e9SHarish Jenny K N &dev_attr_rca.attr, 8536825a606SBojan Prtvar &dev_attr_dsr.attr, 854b658af71SAdrian Hunter &dev_attr_cmdq_en.attr, 85551ec92e2SPierre Ossman NULL, 85651ec92e2SPierre Ossman }; 857d1e58212SAxel Lin ATTRIBUTE_GROUPS(mmc_std); 85851ec92e2SPierre Ossman 85951ec92e2SPierre Ossman static struct device_type mmc_type = { 860d1e58212SAxel Lin .groups = mmc_std_groups, 86151ec92e2SPierre Ossman }; 86251ec92e2SPierre Ossman 8637ea239d9SPierre Ossman /* 864b87d8dbfSGirish K S * Select the PowerClass for the current bus width 865b87d8dbfSGirish K S * If power class is defined for 4/8 bit bus in the 866b87d8dbfSGirish K S * extended CSD register, select it by executing the 867b87d8dbfSGirish K S * mmc_switch command. 868b87d8dbfSGirish K S */ 8692385049dSSeungwon Jeon static int __mmc_select_powerclass(struct mmc_card *card, 87060443712SFredrik Soderstedt unsigned int bus_width) 871b87d8dbfSGirish K S { 8722385049dSSeungwon Jeon struct mmc_host *host = card->host; 8732385049dSSeungwon Jeon struct mmc_ext_csd *ext_csd = &card->ext_csd; 87460443712SFredrik Soderstedt unsigned int pwrclass_val = 0; 8752385049dSSeungwon Jeon int err = 0; 876b87d8dbfSGirish K S 877b87d8dbfSGirish K S switch (1 << host->ios.vdd) { 878b87d8dbfSGirish K S case MMC_VDD_165_195: 8792385049dSSeungwon Jeon if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) 8802385049dSSeungwon Jeon pwrclass_val = ext_csd->raw_pwr_cl_26_195; 8812385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR) 88260443712SFredrik Soderstedt pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? 8832385049dSSeungwon Jeon ext_csd->raw_pwr_cl_52_195 : 8842385049dSSeungwon Jeon ext_csd->raw_pwr_cl_ddr_52_195; 8852385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HS200_MAX_DTR) 8862385049dSSeungwon Jeon pwrclass_val = ext_csd->raw_pwr_cl_200_195; 887b87d8dbfSGirish K S break; 88893fc5a47SSubhash Jadavani case MMC_VDD_27_28: 88993fc5a47SSubhash Jadavani case MMC_VDD_28_29: 89093fc5a47SSubhash Jadavani case MMC_VDD_29_30: 89193fc5a47SSubhash Jadavani case MMC_VDD_30_31: 89293fc5a47SSubhash Jadavani case MMC_VDD_31_32: 893b87d8dbfSGirish K S case MMC_VDD_32_33: 894b87d8dbfSGirish K S case MMC_VDD_33_34: 895b87d8dbfSGirish K S case MMC_VDD_34_35: 896b87d8dbfSGirish K S case MMC_VDD_35_36: 8972385049dSSeungwon Jeon if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) 8982385049dSSeungwon Jeon pwrclass_val = ext_csd->raw_pwr_cl_26_360; 8992385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR) 90060443712SFredrik Soderstedt pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? 9012385049dSSeungwon Jeon ext_csd->raw_pwr_cl_52_360 : 9022385049dSSeungwon Jeon ext_csd->raw_pwr_cl_ddr_52_360; 9032385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HS200_MAX_DTR) 9040a5b6438SSeungwon Jeon pwrclass_val = (bus_width == EXT_CSD_DDR_BUS_WIDTH_8) ? 9050a5b6438SSeungwon Jeon ext_csd->raw_pwr_cl_ddr_200_360 : 9060a5b6438SSeungwon Jeon ext_csd->raw_pwr_cl_200_360; 907b87d8dbfSGirish K S break; 908b87d8dbfSGirish K S default: 9096606110dSJoe Perches pr_warn("%s: Voltage range not supported for power class\n", 9106606110dSJoe Perches mmc_hostname(host)); 911b87d8dbfSGirish K S return -EINVAL; 912b87d8dbfSGirish K S } 913b87d8dbfSGirish K S 914b87d8dbfSGirish K S if (bus_width & (EXT_CSD_BUS_WIDTH_8 | EXT_CSD_DDR_BUS_WIDTH_8)) 915b87d8dbfSGirish K S pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_8BIT_MASK) >> 916b87d8dbfSGirish K S EXT_CSD_PWR_CL_8BIT_SHIFT; 917b87d8dbfSGirish K S else 918b87d8dbfSGirish K S pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_4BIT_MASK) >> 919b87d8dbfSGirish K S EXT_CSD_PWR_CL_4BIT_SHIFT; 920b87d8dbfSGirish K S 921b87d8dbfSGirish K S /* If the power class is different from the default value */ 922b87d8dbfSGirish K S if (pwrclass_val > 0) { 923b87d8dbfSGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 924b87d8dbfSGirish K S EXT_CSD_POWER_CLASS, 925b87d8dbfSGirish K S pwrclass_val, 92671fe3eb0SSeungwon Jeon card->ext_csd.generic_cmd6_time); 927b87d8dbfSGirish K S } 928b87d8dbfSGirish K S 929b87d8dbfSGirish K S return err; 930b87d8dbfSGirish K S } 931b87d8dbfSGirish K S 9322385049dSSeungwon Jeon static int mmc_select_powerclass(struct mmc_card *card) 9332385049dSSeungwon Jeon { 9342385049dSSeungwon Jeon struct mmc_host *host = card->host; 9352385049dSSeungwon Jeon u32 bus_width, ext_csd_bits; 9362385049dSSeungwon Jeon int err, ddr; 9372385049dSSeungwon Jeon 9382385049dSSeungwon Jeon /* Power class selection is supported for versions >= 4.0 */ 939148bcab2SUlf Hansson if (!mmc_can_ext_csd(card)) 9402385049dSSeungwon Jeon return 0; 9412385049dSSeungwon Jeon 9422385049dSSeungwon Jeon bus_width = host->ios.bus_width; 9432385049dSSeungwon Jeon /* Power class values are defined only for 4/8 bit bus */ 9442385049dSSeungwon Jeon if (bus_width == MMC_BUS_WIDTH_1) 9452385049dSSeungwon Jeon return 0; 9462385049dSSeungwon Jeon 9472385049dSSeungwon Jeon ddr = card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52; 9482385049dSSeungwon Jeon if (ddr) 9492385049dSSeungwon Jeon ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? 9502385049dSSeungwon Jeon EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; 9512385049dSSeungwon Jeon else 9522385049dSSeungwon Jeon ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? 9532385049dSSeungwon Jeon EXT_CSD_BUS_WIDTH_8 : EXT_CSD_BUS_WIDTH_4; 9542385049dSSeungwon Jeon 9552385049dSSeungwon Jeon err = __mmc_select_powerclass(card, ext_csd_bits); 9562385049dSSeungwon Jeon if (err) 9572385049dSSeungwon Jeon pr_warn("%s: power class selection to bus width %d ddr %d failed\n", 9582385049dSSeungwon Jeon mmc_hostname(host), 1 << bus_width, ddr); 9592385049dSSeungwon Jeon 9602385049dSSeungwon Jeon return err; 9612385049dSSeungwon Jeon } 9622385049dSSeungwon Jeon 963b87d8dbfSGirish K S /* 964577fb131SSeungwon Jeon * Set the bus speed for the selected speed mode. 965a4924c71SGirish K S */ 966577fb131SSeungwon Jeon static void mmc_set_bus_speed(struct mmc_card *card) 967a4924c71SGirish K S { 968577fb131SSeungwon Jeon unsigned int max_dtr = (unsigned int)-1; 969577fb131SSeungwon Jeon 9700a5b6438SSeungwon Jeon if ((mmc_card_hs200(card) || mmc_card_hs400(card)) && 9710a5b6438SSeungwon Jeon max_dtr > card->ext_csd.hs200_max_dtr) 972577fb131SSeungwon Jeon max_dtr = card->ext_csd.hs200_max_dtr; 973577fb131SSeungwon Jeon else if (mmc_card_hs(card) && max_dtr > card->ext_csd.hs_max_dtr) 974577fb131SSeungwon Jeon max_dtr = card->ext_csd.hs_max_dtr; 975577fb131SSeungwon Jeon else if (max_dtr > card->csd.max_dtr) 976577fb131SSeungwon Jeon max_dtr = card->csd.max_dtr; 977577fb131SSeungwon Jeon 978577fb131SSeungwon Jeon mmc_set_clock(card->host, max_dtr); 979577fb131SSeungwon Jeon } 980577fb131SSeungwon Jeon 981577fb131SSeungwon Jeon /* 982577fb131SSeungwon Jeon * Select the bus width amoung 4-bit and 8-bit(SDR). 983577fb131SSeungwon Jeon * If the bus width is changed successfully, return the selected width value. 984577fb131SSeungwon Jeon * Zero is returned instead of error value if the wide width is not supported. 985577fb131SSeungwon Jeon */ 986577fb131SSeungwon Jeon static int mmc_select_bus_width(struct mmc_card *card) 987577fb131SSeungwon Jeon { 988a4924c71SGirish K S static unsigned ext_csd_bits[] = { 989a4924c71SGirish K S EXT_CSD_BUS_WIDTH_8, 990577fb131SSeungwon Jeon EXT_CSD_BUS_WIDTH_4, 991a4924c71SGirish K S }; 992a4924c71SGirish K S static unsigned bus_widths[] = { 993a4924c71SGirish K S MMC_BUS_WIDTH_8, 994577fb131SSeungwon Jeon MMC_BUS_WIDTH_4, 995a4924c71SGirish K S }; 996577fb131SSeungwon Jeon struct mmc_host *host = card->host; 997577fb131SSeungwon Jeon unsigned idx, bus_width = 0; 998577fb131SSeungwon Jeon int err = 0; 999a4924c71SGirish K S 10001c2d26e3SAlexandre Belloni if (!mmc_can_ext_csd(card) || 1001577fb131SSeungwon Jeon !(host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) 1002577fb131SSeungwon Jeon return 0; 1003a4924c71SGirish K S 1004577fb131SSeungwon Jeon idx = (host->caps & MMC_CAP_8_BIT_DATA) ? 0 : 1; 1005a4924c71SGirish K S 1006a4924c71SGirish K S /* 1007a4924c71SGirish K S * Unlike SD, MMC cards dont have a configuration register to notify 1008a4924c71SGirish K S * supported bus width. So bus test command should be run to identify 1009a4924c71SGirish K S * the supported bus width or compare the ext csd values of current 1010a4924c71SGirish K S * bus width and ext csd values of 1 bit mode read earlier. 1011a4924c71SGirish K S */ 1012577fb131SSeungwon Jeon for (; idx < ARRAY_SIZE(bus_widths); idx++) { 1013a4924c71SGirish K S /* 1014a4924c71SGirish K S * Host is capable of 8bit transfer, then switch 1015a4924c71SGirish K S * the device to work in 8bit transfer mode. If the 1016a4924c71SGirish K S * mmc switch command returns error then switch to 1017a4924c71SGirish K S * 4bit transfer mode. On success set the corresponding 1018a4924c71SGirish K S * bus width on the host. 1019a4924c71SGirish K S */ 1020a4924c71SGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1021a4924c71SGirish K S EXT_CSD_BUS_WIDTH, 1022a4924c71SGirish K S ext_csd_bits[idx], 1023a4924c71SGirish K S card->ext_csd.generic_cmd6_time); 1024a4924c71SGirish K S if (err) 1025a4924c71SGirish K S continue; 1026a4924c71SGirish K S 1027577fb131SSeungwon Jeon bus_width = bus_widths[idx]; 1028577fb131SSeungwon Jeon mmc_set_bus_width(host, bus_width); 1029a4924c71SGirish K S 1030577fb131SSeungwon Jeon /* 1031577fb131SSeungwon Jeon * If controller can't handle bus width test, 1032577fb131SSeungwon Jeon * compare ext_csd previously read in 1 bit mode 1033577fb131SSeungwon Jeon * against ext_csd at new bus width 1034577fb131SSeungwon Jeon */ 1035a4924c71SGirish K S if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST)) 1036577fb131SSeungwon Jeon err = mmc_compare_ext_csds(card, bus_width); 1037a4924c71SGirish K S else 1038577fb131SSeungwon Jeon err = mmc_bus_test(card, bus_width); 1039577fb131SSeungwon Jeon 1040577fb131SSeungwon Jeon if (!err) { 1041577fb131SSeungwon Jeon err = bus_width; 1042a4924c71SGirish K S break; 1043577fb131SSeungwon Jeon } else { 1044577fb131SSeungwon Jeon pr_warn("%s: switch to bus width %d failed\n", 1045ed9feec7SWolfram Sang mmc_hostname(host), 1 << bus_width); 1046577fb131SSeungwon Jeon } 1047a4924c71SGirish K S } 1048a4924c71SGirish K S 1049577fb131SSeungwon Jeon return err; 1050577fb131SSeungwon Jeon } 1051577fb131SSeungwon Jeon 1052577fb131SSeungwon Jeon /* 1053577fb131SSeungwon Jeon * Switch to the high-speed mode 1054577fb131SSeungwon Jeon */ 1055577fb131SSeungwon Jeon static int mmc_select_hs(struct mmc_card *card) 1056577fb131SSeungwon Jeon { 1057577fb131SSeungwon Jeon int err; 1058577fb131SSeungwon Jeon 10594509f847SUlf Hansson err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1060577fb131SSeungwon Jeon EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS, 106153e60650SUlf Hansson card->ext_csd.generic_cmd6_time, MMC_TIMING_MMC_HS, 106253e60650SUlf Hansson true, true, true); 106367d35960SJungseung Lee if (err) 106467d35960SJungseung Lee pr_warn("%s: switch to high-speed failed, err:%d\n", 106567d35960SJungseung Lee mmc_hostname(card->host), err); 106667d35960SJungseung Lee 1067577fb131SSeungwon Jeon return err; 1068577fb131SSeungwon Jeon } 1069577fb131SSeungwon Jeon 1070577fb131SSeungwon Jeon /* 1071577fb131SSeungwon Jeon * Activate wide bus and DDR if supported. 1072577fb131SSeungwon Jeon */ 1073577fb131SSeungwon Jeon static int mmc_select_hs_ddr(struct mmc_card *card) 1074577fb131SSeungwon Jeon { 1075577fb131SSeungwon Jeon struct mmc_host *host = card->host; 1076577fb131SSeungwon Jeon u32 bus_width, ext_csd_bits; 1077577fb131SSeungwon Jeon int err = 0; 1078577fb131SSeungwon Jeon 1079577fb131SSeungwon Jeon if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52)) 1080577fb131SSeungwon Jeon return 0; 1081577fb131SSeungwon Jeon 1082577fb131SSeungwon Jeon bus_width = host->ios.bus_width; 1083577fb131SSeungwon Jeon if (bus_width == MMC_BUS_WIDTH_1) 1084577fb131SSeungwon Jeon return 0; 1085577fb131SSeungwon Jeon 1086577fb131SSeungwon Jeon ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? 1087577fb131SSeungwon Jeon EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; 1088577fb131SSeungwon Jeon 1089e173f891SUlf Hansson err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1090577fb131SSeungwon Jeon EXT_CSD_BUS_WIDTH, 1091577fb131SSeungwon Jeon ext_csd_bits, 1092e173f891SUlf Hansson card->ext_csd.generic_cmd6_time, 1093e173f891SUlf Hansson MMC_TIMING_MMC_DDR52, 1094e173f891SUlf Hansson true, true, true); 1095577fb131SSeungwon Jeon if (err) { 10964b75bffcSAndrew Gabbasov pr_err("%s: switch to bus width %d ddr failed\n", 1097577fb131SSeungwon Jeon mmc_hostname(host), 1 << bus_width); 1098577fb131SSeungwon Jeon return err; 1099577fb131SSeungwon Jeon } 1100577fb131SSeungwon Jeon 1101577fb131SSeungwon Jeon /* 1102577fb131SSeungwon Jeon * eMMC cards can support 3.3V to 1.2V i/o (vccq) 1103577fb131SSeungwon Jeon * signaling. 1104577fb131SSeungwon Jeon * 1105577fb131SSeungwon Jeon * EXT_CSD_CARD_TYPE_DDR_1_8V means 3.3V or 1.8V vccq. 1106577fb131SSeungwon Jeon * 1107577fb131SSeungwon Jeon * 1.8V vccq at 3.3V core voltage (vcc) is not required 1108577fb131SSeungwon Jeon * in the JEDEC spec for DDR. 1109577fb131SSeungwon Jeon * 1110312449efSChuanxiao.Dong * Even (e)MMC card can support 3.3v to 1.2v vccq, but not all 1111312449efSChuanxiao.Dong * host controller can support this, like some of the SDHCI 1112312449efSChuanxiao.Dong * controller which connect to an eMMC device. Some of these 1113312449efSChuanxiao.Dong * host controller still needs to use 1.8v vccq for supporting 1114312449efSChuanxiao.Dong * DDR mode. 1115312449efSChuanxiao.Dong * 1116312449efSChuanxiao.Dong * So the sequence will be: 1117312449efSChuanxiao.Dong * if (host and device can both support 1.2v IO) 1118312449efSChuanxiao.Dong * use 1.2v IO; 1119312449efSChuanxiao.Dong * else if (host and device can both support 1.8v IO) 1120312449efSChuanxiao.Dong * use 1.8v IO; 1121312449efSChuanxiao.Dong * so if host and device can only support 3.3v IO, this is the 1122312449efSChuanxiao.Dong * last choice. 1123577fb131SSeungwon Jeon * 1124577fb131SSeungwon Jeon * WARNING: eMMC rules are NOT the same as SD DDR 1125577fb131SSeungwon Jeon */ 112620f921bbSUlf Hansson if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_2V) { 11274e74b6b3SUlf Hansson err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); 112820f921bbSUlf Hansson if (!err) 112920f921bbSUlf Hansson return 0; 113020f921bbSUlf Hansson } 1131577fb131SSeungwon Jeon 113220f921bbSUlf Hansson if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_8V && 113320f921bbSUlf Hansson host->caps & MMC_CAP_1_8V_DDR) 11344e74b6b3SUlf Hansson err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); 1135312449efSChuanxiao.Dong 1136312449efSChuanxiao.Dong /* make sure vccq is 3.3v after switching disaster */ 1137312449efSChuanxiao.Dong if (err) 11384e74b6b3SUlf Hansson err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330); 1139312449efSChuanxiao.Dong 1140577fb131SSeungwon Jeon return err; 1141577fb131SSeungwon Jeon } 1142577fb131SSeungwon Jeon 11430a5b6438SSeungwon Jeon static int mmc_select_hs400(struct mmc_card *card) 11440a5b6438SSeungwon Jeon { 11450a5b6438SSeungwon Jeon struct mmc_host *host = card->host; 114651b12f77SAdrian Hunter unsigned int max_dtr; 11470a5b6438SSeungwon Jeon int err = 0; 1148cc4f414cSAdrian Hunter u8 val; 11490a5b6438SSeungwon Jeon 11500a5b6438SSeungwon Jeon /* 11510a5b6438SSeungwon Jeon * HS400 mode requires 8-bit bus width 11520a5b6438SSeungwon Jeon */ 11530a5b6438SSeungwon Jeon if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 && 11540a5b6438SSeungwon Jeon host->ios.bus_width == MMC_BUS_WIDTH_8)) 11550a5b6438SSeungwon Jeon return 0; 11560a5b6438SSeungwon Jeon 115751b12f77SAdrian Hunter /* Switch card to HS mode */ 1158adb24d42SWenkai Du val = EXT_CSD_TIMING_HS; 11590a5b6438SSeungwon Jeon err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1160cc4f414cSAdrian Hunter EXT_CSD_HS_TIMING, val, 1161aa33ce3cSUlf Hansson card->ext_csd.generic_cmd6_time, 0, 116208573eafSChaotian Jing true, false, true); 11630a5b6438SSeungwon Jeon if (err) { 11644b75bffcSAndrew Gabbasov pr_err("%s: switch to high-speed from hs200 failed, err:%d\n", 11650a5b6438SSeungwon Jeon mmc_hostname(host), err); 11660a5b6438SSeungwon Jeon return err; 11670a5b6438SSeungwon Jeon } 11680a5b6438SSeungwon Jeon 116951b12f77SAdrian Hunter /* Set host controller to HS timing */ 117051b12f77SAdrian Hunter mmc_set_timing(card->host, MMC_TIMING_MMC_HS); 117151b12f77SAdrian Hunter 1172ba6c7ac3SSimon Horman /* Prepare host to downgrade to HS timing */ 1173ba6c7ac3SSimon Horman if (host->ops->hs400_downgrade) 1174ba6c7ac3SSimon Horman host->ops->hs400_downgrade(host); 1175ba6c7ac3SSimon Horman 1176649c6059SZiyuan Xu /* Reduce frequency to HS frequency */ 1177649c6059SZiyuan Xu max_dtr = card->ext_csd.hs_max_dtr; 1178649c6059SZiyuan Xu mmc_set_clock(host, max_dtr); 1179649c6059SZiyuan Xu 1180d2302933SAdrian Hunter err = mmc_switch_status(card); 1181d2302933SAdrian Hunter if (err) 1182d2302933SAdrian Hunter goto out_err; 1183d2302933SAdrian Hunter 1184d2302933SAdrian Hunter /* Switch card to DDR */ 11850a5b6438SSeungwon Jeon err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 11860a5b6438SSeungwon Jeon EXT_CSD_BUS_WIDTH, 11870a5b6438SSeungwon Jeon EXT_CSD_DDR_BUS_WIDTH_8, 11880a5b6438SSeungwon Jeon card->ext_csd.generic_cmd6_time); 11890a5b6438SSeungwon Jeon if (err) { 11904b75bffcSAndrew Gabbasov pr_err("%s: switch to bus width for hs400 failed, err:%d\n", 11910a5b6438SSeungwon Jeon mmc_hostname(host), err); 11920a5b6438SSeungwon Jeon return err; 11930a5b6438SSeungwon Jeon } 11940a5b6438SSeungwon Jeon 1195d2302933SAdrian Hunter /* Switch card to HS400 */ 1196cc4f414cSAdrian Hunter val = EXT_CSD_TIMING_HS400 | 1197cc4f414cSAdrian Hunter card->drive_strength << EXT_CSD_DRV_STR_SHIFT; 11980a5b6438SSeungwon Jeon err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1199cc4f414cSAdrian Hunter EXT_CSD_HS_TIMING, val, 1200aa33ce3cSUlf Hansson card->ext_csd.generic_cmd6_time, 0, 120108573eafSChaotian Jing true, false, true); 12020a5b6438SSeungwon Jeon if (err) { 12034b75bffcSAndrew Gabbasov pr_err("%s: switch to hs400 failed, err:%d\n", 12040a5b6438SSeungwon Jeon mmc_hostname(host), err); 12050a5b6438SSeungwon Jeon return err; 12060a5b6438SSeungwon Jeon } 12070a5b6438SSeungwon Jeon 1208d2302933SAdrian Hunter /* Set host controller to HS400 timing and frequency */ 12090a5b6438SSeungwon Jeon mmc_set_timing(host, MMC_TIMING_MMC_HS400); 12100a5b6438SSeungwon Jeon mmc_set_bus_speed(card); 12110a5b6438SSeungwon Jeon 1212d2302933SAdrian Hunter err = mmc_switch_status(card); 1213d2302933SAdrian Hunter if (err) 1214d2302933SAdrian Hunter goto out_err; 1215d2302933SAdrian Hunter 1216ba6c7ac3SSimon Horman if (host->ops->hs400_complete) 1217ba6c7ac3SSimon Horman host->ops->hs400_complete(host); 1218ba6c7ac3SSimon Horman 12190a5b6438SSeungwon Jeon return 0; 1220d2302933SAdrian Hunter 1221d2302933SAdrian Hunter out_err: 1222d2302933SAdrian Hunter pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), 1223d2302933SAdrian Hunter __func__, err); 1224d2302933SAdrian Hunter return err; 12250a5b6438SSeungwon Jeon } 12260a5b6438SSeungwon Jeon 12276376f69dSAdrian Hunter int mmc_hs200_to_hs400(struct mmc_card *card) 12286376f69dSAdrian Hunter { 12296376f69dSAdrian Hunter return mmc_select_hs400(card); 12306376f69dSAdrian Hunter } 12316376f69dSAdrian Hunter 12326376f69dSAdrian Hunter int mmc_hs400_to_hs200(struct mmc_card *card) 12336376f69dSAdrian Hunter { 12346376f69dSAdrian Hunter struct mmc_host *host = card->host; 12356376f69dSAdrian Hunter unsigned int max_dtr; 12366376f69dSAdrian Hunter int err; 1237cc4f414cSAdrian Hunter u8 val; 12386376f69dSAdrian Hunter 12396376f69dSAdrian Hunter /* Reduce frequency to HS */ 12406376f69dSAdrian Hunter max_dtr = card->ext_csd.hs_max_dtr; 12416376f69dSAdrian Hunter mmc_set_clock(host, max_dtr); 12426376f69dSAdrian Hunter 12436376f69dSAdrian Hunter /* Switch HS400 to HS DDR */ 1244adb24d42SWenkai Du val = EXT_CSD_TIMING_HS; 12456376f69dSAdrian Hunter err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, 1246aa33ce3cSUlf Hansson val, card->ext_csd.generic_cmd6_time, 0, 124708573eafSChaotian Jing true, false, true); 12486376f69dSAdrian Hunter if (err) 12496376f69dSAdrian Hunter goto out_err; 12506376f69dSAdrian Hunter 12516376f69dSAdrian Hunter mmc_set_timing(host, MMC_TIMING_MMC_DDR52); 12526376f69dSAdrian Hunter 12536376f69dSAdrian Hunter err = mmc_switch_status(card); 12546376f69dSAdrian Hunter if (err) 12556376f69dSAdrian Hunter goto out_err; 12566376f69dSAdrian Hunter 12576376f69dSAdrian Hunter /* Switch HS DDR to HS */ 12586376f69dSAdrian Hunter err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BUS_WIDTH, 12596376f69dSAdrian Hunter EXT_CSD_BUS_WIDTH_8, card->ext_csd.generic_cmd6_time, 1260aa33ce3cSUlf Hansson 0, true, false, true); 12616376f69dSAdrian Hunter if (err) 12626376f69dSAdrian Hunter goto out_err; 12636376f69dSAdrian Hunter 12646376f69dSAdrian Hunter mmc_set_timing(host, MMC_TIMING_MMC_HS); 12656376f69dSAdrian Hunter 1266ba6c7ac3SSimon Horman if (host->ops->hs400_downgrade) 1267ba6c7ac3SSimon Horman host->ops->hs400_downgrade(host); 1268ba6c7ac3SSimon Horman 12696376f69dSAdrian Hunter err = mmc_switch_status(card); 12706376f69dSAdrian Hunter if (err) 12716376f69dSAdrian Hunter goto out_err; 12726376f69dSAdrian Hunter 12736376f69dSAdrian Hunter /* Switch HS to HS200 */ 1274cc4f414cSAdrian Hunter val = EXT_CSD_TIMING_HS200 | 1275cc4f414cSAdrian Hunter card->drive_strength << EXT_CSD_DRV_STR_SHIFT; 12766376f69dSAdrian Hunter err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, 1277aa33ce3cSUlf Hansson val, card->ext_csd.generic_cmd6_time, 0, 127808573eafSChaotian Jing true, false, true); 12796376f69dSAdrian Hunter if (err) 12806376f69dSAdrian Hunter goto out_err; 12816376f69dSAdrian Hunter 12826376f69dSAdrian Hunter mmc_set_timing(host, MMC_TIMING_MMC_HS200); 12836376f69dSAdrian Hunter 1284ef3d2322SAdrian Hunter /* 1285ef3d2322SAdrian Hunter * For HS200, CRC errors are not a reliable way to know the switch 1286ef3d2322SAdrian Hunter * failed. If there really is a problem, we would expect tuning will 1287ef3d2322SAdrian Hunter * fail and the result ends up the same. 1288ef3d2322SAdrian Hunter */ 1289ef3d2322SAdrian Hunter err = __mmc_switch_status(card, false); 12906376f69dSAdrian Hunter if (err) 12916376f69dSAdrian Hunter goto out_err; 12926376f69dSAdrian Hunter 12936376f69dSAdrian Hunter mmc_set_bus_speed(card); 12946376f69dSAdrian Hunter 1295c8a4e30dSUlf Hansson /* Prepare tuning for HS400 mode. */ 1296c8a4e30dSUlf Hansson if (host->ops->prepare_hs400_tuning) 1297c8a4e30dSUlf Hansson host->ops->prepare_hs400_tuning(host, &host->ios); 1298c8a4e30dSUlf Hansson 12996376f69dSAdrian Hunter return 0; 13006376f69dSAdrian Hunter 13016376f69dSAdrian Hunter out_err: 13026376f69dSAdrian Hunter pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), 13036376f69dSAdrian Hunter __func__, err); 13046376f69dSAdrian Hunter return err; 13056376f69dSAdrian Hunter } 13066376f69dSAdrian Hunter 1307fb458864SChanho Min static void mmc_select_driver_type(struct mmc_card *card) 1308fb458864SChanho Min { 1309be17f1ceSWolfram Sang int card_drv_type, drive_strength, drv_type = 0; 13106186d06cSWolfram Sang int fixed_drv_type = card->host->fixed_drv_type; 1311fb458864SChanho Min 1312fb458864SChanho Min card_drv_type = card->ext_csd.raw_driver_strength | 1313fb458864SChanho Min mmc_driver_type_mask(0); 1314fb458864SChanho Min 13156186d06cSWolfram Sang if (fixed_drv_type >= 0) 13166186d06cSWolfram Sang drive_strength = card_drv_type & mmc_driver_type_mask(fixed_drv_type) 13176186d06cSWolfram Sang ? fixed_drv_type : 0; 13186186d06cSWolfram Sang else 1319fb458864SChanho Min drive_strength = mmc_select_drive_strength(card, 1320fb458864SChanho Min card->ext_csd.hs200_max_dtr, 1321fb458864SChanho Min card_drv_type, &drv_type); 1322fb458864SChanho Min 1323fb458864SChanho Min card->drive_strength = drive_strength; 1324fb458864SChanho Min 1325fb458864SChanho Min if (drv_type) 1326fb458864SChanho Min mmc_set_driver_type(card->host, drv_type); 1327fb458864SChanho Min } 1328fb458864SChanho Min 132981ac2af6SShawn Lin static int mmc_select_hs400es(struct mmc_card *card) 133081ac2af6SShawn Lin { 133181ac2af6SShawn Lin struct mmc_host *host = card->host; 133292ddd959SHaibo Chen int err = -EINVAL; 133381ac2af6SShawn Lin u8 val; 133481ac2af6SShawn Lin 133581ac2af6SShawn Lin if (!(host->caps & MMC_CAP_8_BIT_DATA)) { 133681ac2af6SShawn Lin err = -ENOTSUPP; 133781ac2af6SShawn Lin goto out_err; 133881ac2af6SShawn Lin } 133981ac2af6SShawn Lin 13401720d354SShawn Lin if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400_1_2V) 13414e74b6b3SUlf Hansson err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); 13421720d354SShawn Lin 13431720d354SShawn Lin if (err && card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400_1_8V) 13444e74b6b3SUlf Hansson err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); 13451720d354SShawn Lin 13461720d354SShawn Lin /* If fails try again during next card power cycle */ 13471720d354SShawn Lin if (err) 13481720d354SShawn Lin goto out_err; 13491720d354SShawn Lin 135081ac2af6SShawn Lin err = mmc_select_bus_width(card); 13517f38abf2SHongjie Fang if (err != MMC_BUS_WIDTH_8) { 13527f38abf2SHongjie Fang pr_err("%s: switch to 8bit bus width failed, err:%d\n", 13537f38abf2SHongjie Fang mmc_hostname(host), err); 13547f38abf2SHongjie Fang err = err < 0 ? err : -ENOTSUPP; 135581ac2af6SShawn Lin goto out_err; 13567f38abf2SHongjie Fang } 135781ac2af6SShawn Lin 135881ac2af6SShawn Lin /* Switch card to HS mode */ 135953e60650SUlf Hansson err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 136053e60650SUlf Hansson EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS, 136153e60650SUlf Hansson card->ext_csd.generic_cmd6_time, 0, 136253e60650SUlf Hansson true, false, true); 136353e60650SUlf Hansson if (err) { 136453e60650SUlf Hansson pr_err("%s: switch to hs for hs400es failed, err:%d\n", 136553e60650SUlf Hansson mmc_hostname(host), err); 136653e60650SUlf Hansson goto out_err; 136753e60650SUlf Hansson } 136853e60650SUlf Hansson 136953e60650SUlf Hansson mmc_set_timing(host, MMC_TIMING_MMC_HS); 137053e60650SUlf Hansson err = mmc_switch_status(card); 137167d35960SJungseung Lee if (err) 137281ac2af6SShawn Lin goto out_err; 137381ac2af6SShawn Lin 13744f25580fSShawn Lin mmc_set_clock(host, card->ext_csd.hs_max_dtr); 13754f25580fSShawn Lin 137681ac2af6SShawn Lin /* Switch card to DDR with strobe bit */ 137781ac2af6SShawn Lin val = EXT_CSD_DDR_BUS_WIDTH_8 | EXT_CSD_BUS_WIDTH_STROBE; 137881ac2af6SShawn Lin err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 137981ac2af6SShawn Lin EXT_CSD_BUS_WIDTH, 138081ac2af6SShawn Lin val, 138181ac2af6SShawn Lin card->ext_csd.generic_cmd6_time); 138281ac2af6SShawn Lin if (err) { 138381ac2af6SShawn Lin pr_err("%s: switch to bus width for hs400es failed, err:%d\n", 138481ac2af6SShawn Lin mmc_hostname(host), err); 138581ac2af6SShawn Lin goto out_err; 138681ac2af6SShawn Lin } 138781ac2af6SShawn Lin 1388fb458864SChanho Min mmc_select_driver_type(card); 1389fb458864SChanho Min 139081ac2af6SShawn Lin /* Switch card to HS400 */ 139181ac2af6SShawn Lin val = EXT_CSD_TIMING_HS400 | 139281ac2af6SShawn Lin card->drive_strength << EXT_CSD_DRV_STR_SHIFT; 139381ac2af6SShawn Lin err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 139481ac2af6SShawn Lin EXT_CSD_HS_TIMING, val, 1395aa33ce3cSUlf Hansson card->ext_csd.generic_cmd6_time, 0, 139681ac2af6SShawn Lin true, false, true); 139781ac2af6SShawn Lin if (err) { 139881ac2af6SShawn Lin pr_err("%s: switch to hs400es failed, err:%d\n", 139981ac2af6SShawn Lin mmc_hostname(host), err); 140081ac2af6SShawn Lin goto out_err; 140181ac2af6SShawn Lin } 140281ac2af6SShawn Lin 140381ac2af6SShawn Lin /* Set host controller to HS400 timing and frequency */ 140481ac2af6SShawn Lin mmc_set_timing(host, MMC_TIMING_MMC_HS400); 140581ac2af6SShawn Lin 140681ac2af6SShawn Lin /* Controller enable enhanced strobe function */ 140781ac2af6SShawn Lin host->ios.enhanced_strobe = true; 140881ac2af6SShawn Lin if (host->ops->hs400_enhanced_strobe) 140981ac2af6SShawn Lin host->ops->hs400_enhanced_strobe(host, &host->ios); 141081ac2af6SShawn Lin 141181ac2af6SShawn Lin err = mmc_switch_status(card); 141281ac2af6SShawn Lin if (err) 141381ac2af6SShawn Lin goto out_err; 141481ac2af6SShawn Lin 141581ac2af6SShawn Lin return 0; 141681ac2af6SShawn Lin 141781ac2af6SShawn Lin out_err: 141881ac2af6SShawn Lin pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), 141981ac2af6SShawn Lin __func__, err); 142081ac2af6SShawn Lin return err; 142181ac2af6SShawn Lin } 142281ac2af6SShawn Lin 1423577fb131SSeungwon Jeon /* 1424577fb131SSeungwon Jeon * For device supporting HS200 mode, the following sequence 1425577fb131SSeungwon Jeon * should be done before executing the tuning process. 1426577fb131SSeungwon Jeon * 1. set the desired bus width(4-bit or 8-bit, 1-bit is not supported) 1427577fb131SSeungwon Jeon * 2. switch to HS200 mode 1428577fb131SSeungwon Jeon * 3. set the clock to > 52Mhz and <=200MHz 1429577fb131SSeungwon Jeon */ 1430577fb131SSeungwon Jeon static int mmc_select_hs200(struct mmc_card *card) 1431577fb131SSeungwon Jeon { 1432577fb131SSeungwon Jeon struct mmc_host *host = card->host; 1433e51534c8SDong Aisheng unsigned int old_timing, old_signal_voltage; 1434577fb131SSeungwon Jeon int err = -EINVAL; 1435cc4f414cSAdrian Hunter u8 val; 1436577fb131SSeungwon Jeon 1437e51534c8SDong Aisheng old_signal_voltage = host->ios.signal_voltage; 1438577fb131SSeungwon Jeon if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_2V) 14394e74b6b3SUlf Hansson err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); 1440577fb131SSeungwon Jeon 1441577fb131SSeungwon Jeon if (err && card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_8V) 14424e74b6b3SUlf Hansson err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); 1443577fb131SSeungwon Jeon 1444577fb131SSeungwon Jeon /* If fails try again during next card power cycle */ 1445577fb131SSeungwon Jeon if (err) 1446e51534c8SDong Aisheng return err; 1447577fb131SSeungwon Jeon 1448cc4f414cSAdrian Hunter mmc_select_driver_type(card); 1449cc4f414cSAdrian Hunter 1450577fb131SSeungwon Jeon /* 1451577fb131SSeungwon Jeon * Set the bus width(4 or 8) with host's support and 1452577fb131SSeungwon Jeon * switch to HS200 mode if bus width is set successfully. 1453577fb131SSeungwon Jeon */ 1454577fb131SSeungwon Jeon err = mmc_select_bus_width(card); 14558b7be8f2SPeter Griffin if (err > 0) { 1456cc4f414cSAdrian Hunter val = EXT_CSD_TIMING_HS200 | 1457cc4f414cSAdrian Hunter card->drive_strength << EXT_CSD_DRV_STR_SHIFT; 1458577fb131SSeungwon Jeon err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1459cc4f414cSAdrian Hunter EXT_CSD_HS_TIMING, val, 1460aa33ce3cSUlf Hansson card->ext_csd.generic_cmd6_time, 0, 146108573eafSChaotian Jing true, false, true); 14621815e61bSAdrian Hunter if (err) 14631815e61bSAdrian Hunter goto err; 14641815e61bSAdrian Hunter old_timing = host->ios.timing; 1465577fb131SSeungwon Jeon mmc_set_timing(host, MMC_TIMING_MMC_HS200); 146608573eafSChaotian Jing 1467ef3d2322SAdrian Hunter /* 1468ef3d2322SAdrian Hunter * For HS200, CRC errors are not a reliable way to know the 1469ef3d2322SAdrian Hunter * switch failed. If there really is a problem, we would expect 1470ef3d2322SAdrian Hunter * tuning will fail and the result ends up the same. 1471ef3d2322SAdrian Hunter */ 1472ef3d2322SAdrian Hunter err = __mmc_switch_status(card, false); 1473ef3d2322SAdrian Hunter 14741815e61bSAdrian Hunter /* 14751815e61bSAdrian Hunter * mmc_select_timing() assumes timing has not changed if 14761815e61bSAdrian Hunter * it is a switch error. 14771815e61bSAdrian Hunter */ 14781815e61bSAdrian Hunter if (err == -EBADMSG) 14791815e61bSAdrian Hunter mmc_set_timing(host, old_timing); 14801815e61bSAdrian Hunter } 1481a4924c71SGirish K S err: 1482e51534c8SDong Aisheng if (err) { 1483e51534c8SDong Aisheng /* fall back to the old signal voltage, if fails report error */ 14844e74b6b3SUlf Hansson if (mmc_set_signal_voltage(host, old_signal_voltage)) 1485e51534c8SDong Aisheng err = -EIO; 1486e51534c8SDong Aisheng 14871815e61bSAdrian Hunter pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), 14881815e61bSAdrian Hunter __func__, err); 1489e51534c8SDong Aisheng } 1490a4924c71SGirish K S return err; 1491a4924c71SGirish K S } 1492a4924c71SGirish K S 1493a4924c71SGirish K S /* 149481ac2af6SShawn Lin * Activate High Speed, HS200 or HS400ES mode if supported. 1495577fb131SSeungwon Jeon */ 1496577fb131SSeungwon Jeon static int mmc_select_timing(struct mmc_card *card) 1497577fb131SSeungwon Jeon { 1498577fb131SSeungwon Jeon int err = 0; 1499577fb131SSeungwon Jeon 1500148bcab2SUlf Hansson if (!mmc_can_ext_csd(card)) 1501577fb131SSeungwon Jeon goto bus_speed; 1502577fb131SSeungwon Jeon 150381ac2af6SShawn Lin if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400ES) 150481ac2af6SShawn Lin err = mmc_select_hs400es(card); 150581ac2af6SShawn Lin else if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200) 1506577fb131SSeungwon Jeon err = mmc_select_hs200(card); 1507577fb131SSeungwon Jeon else if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS) 1508577fb131SSeungwon Jeon err = mmc_select_hs(card); 1509577fb131SSeungwon Jeon 1510577fb131SSeungwon Jeon if (err && err != -EBADMSG) 1511577fb131SSeungwon Jeon return err; 1512577fb131SSeungwon Jeon 1513577fb131SSeungwon Jeon bus_speed: 1514577fb131SSeungwon Jeon /* 1515577fb131SSeungwon Jeon * Set the bus speed to the selected bus timing. 1516577fb131SSeungwon Jeon * If timing is not selected, backward compatible is the default. 1517577fb131SSeungwon Jeon */ 1518577fb131SSeungwon Jeon mmc_set_bus_speed(card); 15190400ed0aSDong Aisheng return 0; 1520577fb131SSeungwon Jeon } 1521577fb131SSeungwon Jeon 1522577fb131SSeungwon Jeon /* 1523577fb131SSeungwon Jeon * Execute tuning sequence to seek the proper bus operating 15240a5b6438SSeungwon Jeon * conditions for HS200 and HS400, which sends CMD21 to the device. 1525577fb131SSeungwon Jeon */ 1526577fb131SSeungwon Jeon static int mmc_hs200_tuning(struct mmc_card *card) 1527577fb131SSeungwon Jeon { 1528577fb131SSeungwon Jeon struct mmc_host *host = card->host; 1529577fb131SSeungwon Jeon 15300a5b6438SSeungwon Jeon /* 15310a5b6438SSeungwon Jeon * Timing should be adjusted to the HS400 target 15320a5b6438SSeungwon Jeon * operation frequency for tuning process 15330a5b6438SSeungwon Jeon */ 15340a5b6438SSeungwon Jeon if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 && 15350a5b6438SSeungwon Jeon host->ios.bus_width == MMC_BUS_WIDTH_8) 15360a5b6438SSeungwon Jeon if (host->ops->prepare_hs400_tuning) 15370a5b6438SSeungwon Jeon host->ops->prepare_hs400_tuning(host, &host->ios); 15380a5b6438SSeungwon Jeon 153963e415c6SAdrian Hunter return mmc_execute_tuning(card); 1540577fb131SSeungwon Jeon } 1541577fb131SSeungwon Jeon 1542577fb131SSeungwon Jeon /* 15436abaa0c9SPierre Ossman * Handle the detection and initialisation of a card. 15446abaa0c9SPierre Ossman * 15458769392bSDeepak Saxena * In the case of a resume, "oldcard" will contain the card 15466abaa0c9SPierre Ossman * we're trying to reinitialise. 15477ea239d9SPierre Ossman */ 15488c75deaeSPierre Ossman static int mmc_init_card(struct mmc_host *host, u32 ocr, 15496abaa0c9SPierre Ossman struct mmc_card *oldcard) 15507ea239d9SPierre Ossman { 15517ea239d9SPierre Ossman struct mmc_card *card; 1552577fb131SSeungwon Jeon int err; 15537ea239d9SPierre Ossman u32 cid[4]; 1554b676f039SPhilip Rakity u32 rocr; 15557ea239d9SPierre Ossman 1556d84075c8SPierre Ossman WARN_ON(!host->claimed); 15577ea239d9SPierre Ossman 155844669034SStefan Nilsson XK /* Set correct bus mode for MMC before attempting init */ 155944669034SStefan Nilsson XK if (!mmc_host_is_spi(host)) 156044669034SStefan Nilsson XK mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); 156144669034SStefan Nilsson XK 15627ea239d9SPierre Ossman /* 15637ea239d9SPierre Ossman * Since we're changing the OCR value, we seem to 15647ea239d9SPierre Ossman * need to tell some cards to go back to the idle 15657ea239d9SPierre Ossman * state. We wait 1ms to give cards time to 15667ea239d9SPierre Ossman * respond. 1567c3805467SBalaji T K * mmc_go_idle is needed for eMMC that are asleep 15687ea239d9SPierre Ossman */ 15697ea239d9SPierre Ossman mmc_go_idle(host); 15707ea239d9SPierre Ossman 15717ea239d9SPierre Ossman /* The extra bit indicates that we support high capacity */ 1572b676f039SPhilip Rakity err = mmc_send_op_cond(host, ocr | (1 << 30), &rocr); 157317b0429dSPierre Ossman if (err) 15746abaa0c9SPierre Ossman goto err; 15757ea239d9SPierre Ossman 15767ea239d9SPierre Ossman /* 1577af517150SDavid Brownell * For SPI, enable CRC as appropriate. 1578af517150SDavid Brownell */ 1579af517150SDavid Brownell if (mmc_host_is_spi(host)) { 1580af517150SDavid Brownell err = mmc_spi_set_crc(host, use_spi_crc); 1581af517150SDavid Brownell if (err) 1582af517150SDavid Brownell goto err; 1583af517150SDavid Brownell } 1584af517150SDavid Brownell 1585af517150SDavid Brownell /* 15867ea239d9SPierre Ossman * Fetch CID from card. 15877ea239d9SPierre Ossman */ 1588af517150SDavid Brownell err = mmc_send_cid(host, cid); 158917b0429dSPierre Ossman if (err) 15907ea239d9SPierre Ossman goto err; 15917ea239d9SPierre Ossman 15926abaa0c9SPierre Ossman if (oldcard) { 1593adf66a0dSPierre Ossman if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) { 1594adf66a0dSPierre Ossman err = -ENOENT; 15956abaa0c9SPierre Ossman goto err; 1596adf66a0dSPierre Ossman } 15976abaa0c9SPierre Ossman 15986abaa0c9SPierre Ossman card = oldcard; 15996abaa0c9SPierre Ossman } else { 16007ea239d9SPierre Ossman /* 16017ea239d9SPierre Ossman * Allocate card structure. 16027ea239d9SPierre Ossman */ 160351ec92e2SPierre Ossman card = mmc_alloc_card(host, &mmc_type); 1604adf66a0dSPierre Ossman if (IS_ERR(card)) { 1605adf66a0dSPierre Ossman err = PTR_ERR(card); 16067ea239d9SPierre Ossman goto err; 1607adf66a0dSPierre Ossman } 16087ea239d9SPierre Ossman 160969041150SUlf Hansson card->ocr = ocr; 16107ea239d9SPierre Ossman card->type = MMC_TYPE_MMC; 16117ea239d9SPierre Ossman card->rca = 1; 16127ea239d9SPierre Ossman memcpy(card->raw_cid, cid, sizeof(card->raw_cid)); 16136abaa0c9SPierre Ossman } 16147ea239d9SPierre Ossman 16157ea239d9SPierre Ossman /* 1616eac86321SDoug Anderson * Call the optional HC's init_card function to handle quirks. 1617eac86321SDoug Anderson */ 1618eac86321SDoug Anderson if (host->ops->init_card) 1619eac86321SDoug Anderson host->ops->init_card(host, card); 1620eac86321SDoug Anderson 1621eac86321SDoug Anderson /* 1622af517150SDavid Brownell * For native busses: set card RCA and quit open drain mode. 16237ea239d9SPierre Ossman */ 1624af517150SDavid Brownell if (!mmc_host_is_spi(host)) { 16257ea239d9SPierre Ossman err = mmc_set_relative_addr(card); 162617b0429dSPierre Ossman if (err) 16277ea239d9SPierre Ossman goto free_card; 16287ea239d9SPierre Ossman 16297ea239d9SPierre Ossman mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL); 1630af517150SDavid Brownell } 16317ea239d9SPierre Ossman 16326abaa0c9SPierre Ossman if (!oldcard) { 16337ea239d9SPierre Ossman /* 16347ea239d9SPierre Ossman * Fetch CSD from card. 16357ea239d9SPierre Ossman */ 16367ea239d9SPierre Ossman err = mmc_send_csd(card, card->raw_csd); 163717b0429dSPierre Ossman if (err) 16387ea239d9SPierre Ossman goto free_card; 16397ea239d9SPierre Ossman 1640bd766312SPierre Ossman err = mmc_decode_csd(card); 1641adf66a0dSPierre Ossman if (err) 1642bd766312SPierre Ossman goto free_card; 1643bd766312SPierre Ossman err = mmc_decode_cid(card); 1644adf66a0dSPierre Ossman if (err) 1645bd766312SPierre Ossman goto free_card; 16466abaa0c9SPierre Ossman } 16477ea239d9SPierre Ossman 16487ea239d9SPierre Ossman /* 16493d705d14SSascha Hauer * handling only for cards supporting DSR and hosts requesting 16503d705d14SSascha Hauer * DSR configuration 16513d705d14SSascha Hauer */ 16523d705d14SSascha Hauer if (card->csd.dsr_imp && host->dsr_req) 16533d705d14SSascha Hauer mmc_set_dsr(host); 16543d705d14SSascha Hauer 16553d705d14SSascha Hauer /* 165689a73cf5SPierre Ossman * Select card, as all following commands rely on that. 16577ea239d9SPierre Ossman */ 1658af517150SDavid Brownell if (!mmc_host_is_spi(host)) { 16597ea239d9SPierre Ossman err = mmc_select_card(card); 166017b0429dSPierre Ossman if (err) 16617ea239d9SPierre Ossman goto free_card; 1662af517150SDavid Brownell } 16637ea239d9SPierre Ossman 16646abaa0c9SPierre Ossman if (!oldcard) { 1665076ec38aSUlf Hansson /* Read extended CSD. */ 1666076ec38aSUlf Hansson err = mmc_read_ext_csd(card); 166717b0429dSPierre Ossman if (err) 16687ea239d9SPierre Ossman goto free_card; 1669b676f039SPhilip Rakity 167087e88659SMasahiro Yamada /* 167187e88659SMasahiro Yamada * If doing byte addressing, check if required to do sector 1672b676f039SPhilip Rakity * addressing. Handle the case of <2GB cards needing sector 1673b676f039SPhilip Rakity * addressing. See section 8.1 JEDEC Standard JED84-A441; 1674b676f039SPhilip Rakity * ocr register has bit 30 set for sector addressing. 1675b676f039SPhilip Rakity */ 167687e88659SMasahiro Yamada if (rocr & BIT(30)) 1677b676f039SPhilip Rakity mmc_card_set_blockaddr(card); 1678b676f039SPhilip Rakity 1679dfe86cbaSAdrian Hunter /* Erase size depends on CSD and Extended CSD */ 1680dfe86cbaSAdrian Hunter mmc_set_erase_size(card); 16816abaa0c9SPierre Ossman } 16827ea239d9SPierre Ossman 1683d2a47176SUlf Hansson /* Enable ERASE_GRP_DEF. This bit is lost after a reset or power off. */ 1684d2a47176SUlf Hansson if (card->ext_csd.rev >= 3) { 1685709de99dSChuanxiao Dong err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1686b23cf0bdSSeungwon Jeon EXT_CSD_ERASE_GROUP_DEF, 1, 1687b23cf0bdSSeungwon Jeon card->ext_csd.generic_cmd6_time); 1688709de99dSChuanxiao Dong 1689709de99dSChuanxiao Dong if (err && err != -EBADMSG) 1690709de99dSChuanxiao Dong goto free_card; 1691709de99dSChuanxiao Dong 1692709de99dSChuanxiao Dong if (err) { 1693709de99dSChuanxiao Dong err = 0; 1694709de99dSChuanxiao Dong /* 1695709de99dSChuanxiao Dong * Just disable enhanced area off & sz 1696709de99dSChuanxiao Dong * will try to enable ERASE_GROUP_DEF 1697709de99dSChuanxiao Dong * during next time reinit 1698709de99dSChuanxiao Dong */ 1699709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset = -EINVAL; 1700709de99dSChuanxiao Dong card->ext_csd.enhanced_area_size = -EINVAL; 1701709de99dSChuanxiao Dong } else { 1702709de99dSChuanxiao Dong card->ext_csd.erase_group_def = 1; 1703709de99dSChuanxiao Dong /* 1704709de99dSChuanxiao Dong * enable ERASE_GRP_DEF successfully. 1705709de99dSChuanxiao Dong * This will affect the erase size, so 1706709de99dSChuanxiao Dong * here need to reset erase size 1707709de99dSChuanxiao Dong */ 1708709de99dSChuanxiao Dong mmc_set_erase_size(card); 1709709de99dSChuanxiao Dong } 1710709de99dSChuanxiao Dong } 1711709de99dSChuanxiao Dong 1712709de99dSChuanxiao Dong /* 171341e2a489SPhilip Rakity * Ensure eMMC user default partition is enabled 171441e2a489SPhilip Rakity */ 1715371a689fSAndrei Warkentin if (card->ext_csd.part_config & EXT_CSD_PART_CONFIG_ACC_MASK) { 1716371a689fSAndrei Warkentin card->ext_csd.part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK; 1717371a689fSAndrei Warkentin err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONFIG, 1718371a689fSAndrei Warkentin card->ext_csd.part_config, 1719371a689fSAndrei Warkentin card->ext_csd.part_time); 1720371a689fSAndrei Warkentin if (err && err != -EBADMSG) 1721371a689fSAndrei Warkentin goto free_card; 172241e2a489SPhilip Rakity } 172341e2a489SPhilip Rakity 172441e2a489SPhilip Rakity /* 172543235679SUlf Hansson * Enable power_off_notification byte in the ext_csd register 1726bec8726aSGirish K S */ 172743235679SUlf Hansson if (card->ext_csd.rev >= 6) { 1728bec8726aSGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1729bec8726aSGirish K S EXT_CSD_POWER_OFF_NOTIFICATION, 1730bec8726aSGirish K S EXT_CSD_POWER_ON, 1731bec8726aSGirish K S card->ext_csd.generic_cmd6_time); 1732bec8726aSGirish K S if (err && err != -EBADMSG) 1733bec8726aSGirish K S goto free_card; 1734bec8726aSGirish K S 173596a85d54SGirish K S /* 173696a85d54SGirish K S * The err can be -EBADMSG or 0, 173796a85d54SGirish K S * so check for success and update the flag 173896a85d54SGirish K S */ 1739bec8726aSGirish K S if (!err) 1740e6c08586SUlf Hansson card->ext_csd.power_off_notification = EXT_CSD_POWER_ON; 174196a85d54SGirish K S } 1742bec8726aSGirish K S 1743bec8726aSGirish K S /* 1744577fb131SSeungwon Jeon * Select timing interface 174589a73cf5SPierre Ossman */ 1746577fb131SSeungwon Jeon err = mmc_select_timing(card); 1747577fb131SSeungwon Jeon if (err) 174889a73cf5SPierre Ossman goto free_card; 174989a73cf5SPierre Ossman 1750a4924c71SGirish K S if (mmc_card_hs200(card)) { 1751577fb131SSeungwon Jeon err = mmc_hs200_tuning(card); 17524c4cb171SPhilip Rakity if (err) 17534b75bffcSAndrew Gabbasov goto free_card; 17540a5b6438SSeungwon Jeon 17550a5b6438SSeungwon Jeon err = mmc_select_hs400(card); 17560a5b6438SSeungwon Jeon if (err) 17574b75bffcSAndrew Gabbasov goto free_card; 1758773dc118SGuenter Roeck } else if (!mmc_card_hs400es(card)) { 1759577fb131SSeungwon Jeon /* Select the desired bus width optionally */ 1760577fb131SSeungwon Jeon err = mmc_select_bus_width(card); 17613d4ef329SAnssi Hannula if (err > 0 && mmc_card_hs(card)) { 1762577fb131SSeungwon Jeon err = mmc_select_hs_ddr(card); 1763577fb131SSeungwon Jeon if (err) 17644b75bffcSAndrew Gabbasov goto free_card; 176589a73cf5SPierre Ossman } 1766ef0b27d4SAdrian Hunter } 176789a73cf5SPierre Ossman 1768881d1c25SSeungwon Jeon /* 17692385049dSSeungwon Jeon * Choose the power class with selected bus interface 17702385049dSSeungwon Jeon */ 17712385049dSSeungwon Jeon mmc_select_powerclass(card); 17722385049dSSeungwon Jeon 17732385049dSSeungwon Jeon /* 177452d0974eSSubhash Jadavani * Enable HPI feature (if supported) 177552d0974eSSubhash Jadavani */ 177652d0974eSSubhash Jadavani if (card->ext_csd.hpi) { 177752d0974eSSubhash Jadavani err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 177852d0974eSSubhash Jadavani EXT_CSD_HPI_MGMT, 1, 177952d0974eSSubhash Jadavani card->ext_csd.generic_cmd6_time); 178052d0974eSSubhash Jadavani if (err && err != -EBADMSG) 178152d0974eSSubhash Jadavani goto free_card; 178252d0974eSSubhash Jadavani if (err) { 17836606110dSJoe Perches pr_warn("%s: Enabling HPI failed\n", 178452d0974eSSubhash Jadavani mmc_hostname(card->host)); 178552d0974eSSubhash Jadavani err = 0; 178652d0974eSSubhash Jadavani } else 178752d0974eSSubhash Jadavani card->ext_csd.hpi_en = 1; 178852d0974eSSubhash Jadavani } 178952d0974eSSubhash Jadavani 179052d0974eSSubhash Jadavani /* 1791881d1c25SSeungwon Jeon * If cache size is higher than 0, this indicates 1792881d1c25SSeungwon Jeon * the existence of cache and it can be turned on. 1793881d1c25SSeungwon Jeon */ 17945320226aSPratibhasagar V if (!mmc_card_broken_hpi(card) && 17955320226aSPratibhasagar V card->ext_csd.cache_size > 0) { 1796881d1c25SSeungwon Jeon err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 17978bc0678bSSeungwon Jeon EXT_CSD_CACHE_CTRL, 1, 17988bc0678bSSeungwon Jeon card->ext_csd.generic_cmd6_time); 1799881d1c25SSeungwon Jeon if (err && err != -EBADMSG) 1800881d1c25SSeungwon Jeon goto free_card; 1801881d1c25SSeungwon Jeon 1802881d1c25SSeungwon Jeon /* 1803881d1c25SSeungwon Jeon * Only if no error, cache is turned on successfully. 1804881d1c25SSeungwon Jeon */ 18058bc0678bSSeungwon Jeon if (err) { 18066606110dSJoe Perches pr_warn("%s: Cache is supported, but failed to turn on (%d)\n", 18078bc0678bSSeungwon Jeon mmc_hostname(card->host), err); 18088bc0678bSSeungwon Jeon card->ext_csd.cache_ctrl = 0; 18098bc0678bSSeungwon Jeon err = 0; 18108bc0678bSSeungwon Jeon } else { 18118bc0678bSSeungwon Jeon card->ext_csd.cache_ctrl = 1; 18128bc0678bSSeungwon Jeon } 1813881d1c25SSeungwon Jeon } 1814881d1c25SSeungwon Jeon 1815abd9ac14SSeungwon Jeon /* 181698d4f780SAdrian Hunter * Enable Command Queue if supported. Note that Packed Commands cannot 181798d4f780SAdrian Hunter * be used with Command Queue. 181898d4f780SAdrian Hunter */ 181998d4f780SAdrian Hunter card->ext_csd.cmdq_en = false; 182098d4f780SAdrian Hunter if (card->ext_csd.cmdq_support && host->caps2 & MMC_CAP2_CQE) { 182198d4f780SAdrian Hunter err = mmc_cmdq_enable(card); 182298d4f780SAdrian Hunter if (err && err != -EBADMSG) 182398d4f780SAdrian Hunter goto free_card; 182498d4f780SAdrian Hunter if (err) { 182598d4f780SAdrian Hunter pr_warn("%s: Enabling CMDQ failed\n", 182698d4f780SAdrian Hunter mmc_hostname(card->host)); 182798d4f780SAdrian Hunter card->ext_csd.cmdq_support = false; 182898d4f780SAdrian Hunter card->ext_csd.cmdq_depth = 0; 182998d4f780SAdrian Hunter err = 0; 183098d4f780SAdrian Hunter } 183198d4f780SAdrian Hunter } 183298d4f780SAdrian Hunter /* 18339d4579a8SAdrian Hunter * In some cases (e.g. RPMB or mmc_test), the Command Queue must be 18349d4579a8SAdrian Hunter * disabled for a time, so a flag is needed to indicate to re-enable the 18359d4579a8SAdrian Hunter * Command Queue. 18369d4579a8SAdrian Hunter */ 18379d4579a8SAdrian Hunter card->reenable_cmdq = card->ext_csd.cmdq_en; 18389d4579a8SAdrian Hunter 1839f690f440SAdrian Hunter if (card->ext_csd.cmdq_en && !host->cqe_enabled) { 1840f690f440SAdrian Hunter err = host->cqe_ops->cqe_enable(host, card); 1841f690f440SAdrian Hunter if (err) { 1842f690f440SAdrian Hunter pr_err("%s: Failed to enable CQE, error %d\n", 1843f690f440SAdrian Hunter mmc_hostname(host), err); 1844f690f440SAdrian Hunter } else { 1845f690f440SAdrian Hunter host->cqe_enabled = true; 1846f690f440SAdrian Hunter pr_info("%s: Command Queue Engine enabled\n", 1847f690f440SAdrian Hunter mmc_hostname(host)); 1848f690f440SAdrian Hunter } 1849f690f440SAdrian Hunter } 1850f690f440SAdrian Hunter 1851247cfe53SKyle Roeschley if (host->caps2 & MMC_CAP2_AVOID_3_3V && 1852247cfe53SKyle Roeschley host->ios.signal_voltage == MMC_SIGNAL_VOLTAGE_330) { 1853247cfe53SKyle Roeschley pr_err("%s: Host failed to negotiate down from 3.3V\n", 1854247cfe53SKyle Roeschley mmc_hostname(host)); 1855247cfe53SKyle Roeschley err = -EINVAL; 1856247cfe53SKyle Roeschley goto free_card; 1857247cfe53SKyle Roeschley } 1858247cfe53SKyle Roeschley 18596abaa0c9SPierre Ossman if (!oldcard) 18607ea239d9SPierre Ossman host->card = card; 18617ea239d9SPierre Ossman 186217b0429dSPierre Ossman return 0; 18636abaa0c9SPierre Ossman 18646abaa0c9SPierre Ossman free_card: 18656abaa0c9SPierre Ossman if (!oldcard) 18666abaa0c9SPierre Ossman mmc_remove_card(card); 18676abaa0c9SPierre Ossman err: 1868adf66a0dSPierre Ossman return err; 18696abaa0c9SPierre Ossman } 18706abaa0c9SPierre Ossman 187107a68216SUlf Hansson static int mmc_can_sleep(struct mmc_card *card) 187207a68216SUlf Hansson { 187307a68216SUlf Hansson return (card && card->ext_csd.rev >= 3); 187407a68216SUlf Hansson } 187507a68216SUlf Hansson 187607a68216SUlf Hansson static int mmc_sleep(struct mmc_host *host) 187707a68216SUlf Hansson { 1878c7836d15SMasahiro Yamada struct mmc_command cmd = {}; 187907a68216SUlf Hansson struct mmc_card *card = host->card; 1880cb962e04SUlf Hansson unsigned int timeout_ms = DIV_ROUND_UP(card->ext_csd.sa_timeout, 10000); 188107a68216SUlf Hansson int err; 188207a68216SUlf Hansson 1883436f8daaSAdrian Hunter /* Re-tuning can't be done once the card is deselected */ 1884436f8daaSAdrian Hunter mmc_retune_hold(host); 1885436f8daaSAdrian Hunter 188607a68216SUlf Hansson err = mmc_deselect_cards(host); 188707a68216SUlf Hansson if (err) 1888436f8daaSAdrian Hunter goto out_release; 188907a68216SUlf Hansson 189007a68216SUlf Hansson cmd.opcode = MMC_SLEEP_AWAKE; 189107a68216SUlf Hansson cmd.arg = card->rca << 16; 189207a68216SUlf Hansson cmd.arg |= 1 << 15; 189307a68216SUlf Hansson 1894cb962e04SUlf Hansson /* 1895cb962e04SUlf Hansson * If the max_busy_timeout of the host is specified, validate it against 1896cb962e04SUlf Hansson * the sleep cmd timeout. A failure means we need to prevent the host 1897cb962e04SUlf Hansson * from doing hw busy detection, which is done by converting to a R1 1898cb962e04SUlf Hansson * response instead of a R1B. 1899cb962e04SUlf Hansson */ 1900cb962e04SUlf Hansson if (host->max_busy_timeout && (timeout_ms > host->max_busy_timeout)) { 1901cb962e04SUlf Hansson cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; 1902cb962e04SUlf Hansson } else { 190307a68216SUlf Hansson cmd.flags = MMC_RSP_R1B | MMC_CMD_AC; 1904cb962e04SUlf Hansson cmd.busy_timeout = timeout_ms; 1905cb962e04SUlf Hansson } 1906cb962e04SUlf Hansson 190707a68216SUlf Hansson err = mmc_wait_for_cmd(host, &cmd, 0); 190807a68216SUlf Hansson if (err) 1909436f8daaSAdrian Hunter goto out_release; 191007a68216SUlf Hansson 191107a68216SUlf Hansson /* 191207a68216SUlf Hansson * If the host does not wait while the card signals busy, then we will 191307a68216SUlf Hansson * will have to wait the sleep/awake timeout. Note, we cannot use the 191407a68216SUlf Hansson * SEND_STATUS command to poll the status because that command (and most 191507a68216SUlf Hansson * others) is invalid while the card sleeps. 191607a68216SUlf Hansson */ 1917cb962e04SUlf Hansson if (!cmd.busy_timeout || !(host->caps & MMC_CAP_WAIT_WHILE_BUSY)) 1918cb962e04SUlf Hansson mmc_delay(timeout_ms); 191907a68216SUlf Hansson 1920436f8daaSAdrian Hunter out_release: 1921436f8daaSAdrian Hunter mmc_retune_release(host); 192207a68216SUlf Hansson return err; 192307a68216SUlf Hansson } 192407a68216SUlf Hansson 1925e6c08586SUlf Hansson static int mmc_can_poweroff_notify(const struct mmc_card *card) 1926e6c08586SUlf Hansson { 1927e6c08586SUlf Hansson return card && 1928e6c08586SUlf Hansson mmc_card_mmc(card) && 1929e6c08586SUlf Hansson (card->ext_csd.power_off_notification == EXT_CSD_POWER_ON); 1930e6c08586SUlf Hansson } 1931e6c08586SUlf Hansson 1932e6c08586SUlf Hansson static int mmc_poweroff_notify(struct mmc_card *card, unsigned int notify_type) 1933e6c08586SUlf Hansson { 1934e6c08586SUlf Hansson unsigned int timeout = card->ext_csd.generic_cmd6_time; 1935e6c08586SUlf Hansson int err; 1936e6c08586SUlf Hansson 1937e6c08586SUlf Hansson /* Use EXT_CSD_POWER_OFF_SHORT as default notification type. */ 1938e6c08586SUlf Hansson if (notify_type == EXT_CSD_POWER_OFF_LONG) 1939e6c08586SUlf Hansson timeout = card->ext_csd.power_off_longtime; 1940e6c08586SUlf Hansson 1941878e200bSUlf Hansson err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1942e6c08586SUlf Hansson EXT_CSD_POWER_OFF_NOTIFICATION, 1943aa33ce3cSUlf Hansson notify_type, timeout, 0, true, false, false); 1944e6c08586SUlf Hansson if (err) 1945e6c08586SUlf Hansson pr_err("%s: Power Off Notification timed out, %u\n", 1946e6c08586SUlf Hansson mmc_hostname(card->host), timeout); 1947e6c08586SUlf Hansson 1948e6c08586SUlf Hansson /* Disable the power off notification after the switch operation. */ 1949e6c08586SUlf Hansson card->ext_csd.power_off_notification = EXT_CSD_NO_POWER_NOTIFICATION; 1950e6c08586SUlf Hansson 1951e6c08586SUlf Hansson return err; 1952e6c08586SUlf Hansson } 1953e6c08586SUlf Hansson 19546abaa0c9SPierre Ossman /* 19556abaa0c9SPierre Ossman * Host is being removed. Free up the current card. 19566abaa0c9SPierre Ossman */ 19576abaa0c9SPierre Ossman static void mmc_remove(struct mmc_host *host) 19586abaa0c9SPierre Ossman { 19596abaa0c9SPierre Ossman mmc_remove_card(host->card); 19606abaa0c9SPierre Ossman host->card = NULL; 19616abaa0c9SPierre Ossman } 19626abaa0c9SPierre Ossman 19636abaa0c9SPierre Ossman /* 1964d3049504SAdrian Hunter * Card detection - card is alive. 1965d3049504SAdrian Hunter */ 1966d3049504SAdrian Hunter static int mmc_alive(struct mmc_host *host) 1967d3049504SAdrian Hunter { 1968d3049504SAdrian Hunter return mmc_send_status(host->card, NULL); 1969d3049504SAdrian Hunter } 1970d3049504SAdrian Hunter 1971d3049504SAdrian Hunter /* 19726abaa0c9SPierre Ossman * Card detection callback from host. 19736abaa0c9SPierre Ossman */ 19746abaa0c9SPierre Ossman static void mmc_detect(struct mmc_host *host) 19756abaa0c9SPierre Ossman { 19766abaa0c9SPierre Ossman int err; 19776abaa0c9SPierre Ossman 19786c0cedd1SAdrian Hunter mmc_get_card(host->card, NULL); 19796abaa0c9SPierre Ossman 19806abaa0c9SPierre Ossman /* 19816abaa0c9SPierre Ossman * Just check if our card has been removed. 19826abaa0c9SPierre Ossman */ 1983d3049504SAdrian Hunter err = _mmc_detect_card_removed(host); 19846abaa0c9SPierre Ossman 19856c0cedd1SAdrian Hunter mmc_put_card(host->card, NULL); 19867ea239d9SPierre Ossman 198717b0429dSPierre Ossman if (err) { 19884101c16aSPierre Ossman mmc_remove(host); 19896abaa0c9SPierre Ossman 19906abaa0c9SPierre Ossman mmc_claim_host(host); 19916abaa0c9SPierre Ossman mmc_detach_bus(host); 19927f7e4129SUlf Hansson mmc_power_off(host); 19936abaa0c9SPierre Ossman mmc_release_host(host); 19946abaa0c9SPierre Ossman } 19956abaa0c9SPierre Ossman } 19966abaa0c9SPierre Ossman 199703d071fcSUlf Hansson static int _mmc_suspend(struct mmc_host *host, bool is_suspend) 19986abaa0c9SPierre Ossman { 1999c3805467SBalaji T K int err = 0; 200003d071fcSUlf Hansson unsigned int notify_type = is_suspend ? EXT_CSD_POWER_OFF_SHORT : 200103d071fcSUlf Hansson EXT_CSD_POWER_OFF_LONG; 2002c3805467SBalaji T K 20036abaa0c9SPierre Ossman mmc_claim_host(host); 2004881d926dSMaya Erez 20059ec775f7SUlf Hansson if (mmc_card_suspended(host->card)) 20069ec775f7SUlf Hansson goto out; 20079ec775f7SUlf Hansson 200839b9431bSUlf Hansson if (mmc_card_doing_bkops(host->card)) { 200939b9431bSUlf Hansson err = mmc_stop_bkops(host->card); 201039b9431bSUlf Hansson if (err) 201139b9431bSUlf Hansson goto out; 201239b9431bSUlf Hansson } 201339b9431bSUlf Hansson 201410e5d965SUlf Hansson err = mmc_flush_cache(host->card); 2015881d926dSMaya Erez if (err) 2016881d926dSMaya Erez goto out; 2017881d926dSMaya Erez 201843235679SUlf Hansson if (mmc_can_poweroff_notify(host->card) && 201953275c21SUlf Hansson ((host->caps2 & MMC_CAP2_FULL_PWR_CYCLE) || !is_suspend)) 202003d071fcSUlf Hansson err = mmc_poweroff_notify(host->card, notify_type); 202107a68216SUlf Hansson else if (mmc_can_sleep(host->card)) 202207a68216SUlf Hansson err = mmc_sleep(host); 2023e6c08586SUlf Hansson else if (!mmc_host_is_spi(host)) 202485e727edSJaehoon Chung err = mmc_deselect_cards(host); 202595cdfb72SNicolas Pitre 20269ec775f7SUlf Hansson if (!err) { 202774590263SUlf Hansson mmc_power_off(host); 20289ec775f7SUlf Hansson mmc_card_set_suspended(host->card); 20299ec775f7SUlf Hansson } 2030881d926dSMaya Erez out: 2031881d926dSMaya Erez mmc_release_host(host); 2032c3805467SBalaji T K return err; 20336abaa0c9SPierre Ossman } 20346abaa0c9SPierre Ossman 20356abaa0c9SPierre Ossman /* 20360cb403a2SUlf Hansson * Suspend callback 203703d071fcSUlf Hansson */ 203803d071fcSUlf Hansson static int mmc_suspend(struct mmc_host *host) 203903d071fcSUlf Hansson { 20400cb403a2SUlf Hansson int err; 20410cb403a2SUlf Hansson 20420cb403a2SUlf Hansson err = _mmc_suspend(host, true); 20430cb403a2SUlf Hansson if (!err) { 20440cb403a2SUlf Hansson pm_runtime_disable(&host->card->dev); 20450cb403a2SUlf Hansson pm_runtime_set_suspended(&host->card->dev); 20460cb403a2SUlf Hansson } 20470cb403a2SUlf Hansson 20480cb403a2SUlf Hansson return err; 204903d071fcSUlf Hansson } 205003d071fcSUlf Hansson 205103d071fcSUlf Hansson /* 20526abaa0c9SPierre Ossman * This function tries to determine if the same card is still present 20536abaa0c9SPierre Ossman * and, if so, restore all state to it. 20546abaa0c9SPierre Ossman */ 20550cb403a2SUlf Hansson static int _mmc_resume(struct mmc_host *host) 20566abaa0c9SPierre Ossman { 20579ec775f7SUlf Hansson int err = 0; 20586abaa0c9SPierre Ossman 20596abaa0c9SPierre Ossman mmc_claim_host(host); 20609ec775f7SUlf Hansson 20619ec775f7SUlf Hansson if (!mmc_card_suspended(host->card)) 20629ec775f7SUlf Hansson goto out; 20639ec775f7SUlf Hansson 206469041150SUlf Hansson mmc_power_up(host, host->card->ocr); 206569041150SUlf Hansson err = mmc_init_card(host, host->card->ocr, host->card); 20669ec775f7SUlf Hansson mmc_card_clr_suspended(host->card); 20672986d0bfSPierre Ossman 20689ec775f7SUlf Hansson out: 20699ec775f7SUlf Hansson mmc_release_host(host); 207095cdfb72SNicolas Pitre return err; 20716abaa0c9SPierre Ossman } 20726abaa0c9SPierre Ossman 20739ec775f7SUlf Hansson /* 20749ec775f7SUlf Hansson * Shutdown callback 20759ec775f7SUlf Hansson */ 20769ec775f7SUlf Hansson static int mmc_shutdown(struct mmc_host *host) 20779ec775f7SUlf Hansson { 20789ec775f7SUlf Hansson int err = 0; 20799ec775f7SUlf Hansson 20809ec775f7SUlf Hansson /* 20819ec775f7SUlf Hansson * In a specific case for poweroff notify, we need to resume the card 20829ec775f7SUlf Hansson * before we can shutdown it properly. 20839ec775f7SUlf Hansson */ 20849ec775f7SUlf Hansson if (mmc_can_poweroff_notify(host->card) && 20859ec775f7SUlf Hansson !(host->caps2 & MMC_CAP2_FULL_PWR_CYCLE)) 20860cb403a2SUlf Hansson err = _mmc_resume(host); 20879ec775f7SUlf Hansson 20889ec775f7SUlf Hansson if (!err) 20899ec775f7SUlf Hansson err = _mmc_suspend(host, false); 20909ec775f7SUlf Hansson 20919ec775f7SUlf Hansson return err; 20929ec775f7SUlf Hansson } 2093c4d770d7SUlf Hansson 2094c4d770d7SUlf Hansson /* 20950cb403a2SUlf Hansson * Callback for resume. 20960cb403a2SUlf Hansson */ 20970cb403a2SUlf Hansson static int mmc_resume(struct mmc_host *host) 20980cb403a2SUlf Hansson { 20990cb403a2SUlf Hansson pm_runtime_enable(&host->card->dev); 2100c29536e8SUlf Hansson return 0; 21010cb403a2SUlf Hansson } 21020cb403a2SUlf Hansson 21030cb403a2SUlf Hansson /* 2104c4d770d7SUlf Hansson * Callback for runtime_suspend. 2105c4d770d7SUlf Hansson */ 2106c4d770d7SUlf Hansson static int mmc_runtime_suspend(struct mmc_host *host) 2107c4d770d7SUlf Hansson { 2108c4d770d7SUlf Hansson int err; 2109c4d770d7SUlf Hansson 2110c4d770d7SUlf Hansson if (!(host->caps & MMC_CAP_AGGRESSIVE_PM)) 2111c4d770d7SUlf Hansson return 0; 2112c4d770d7SUlf Hansson 21130cb403a2SUlf Hansson err = _mmc_suspend(host, true); 21140cc81a8cSUlf Hansson if (err) 2115f42cf8d6SMasanari Iida pr_err("%s: error %d doing aggressive suspend\n", 2116c4d770d7SUlf Hansson mmc_hostname(host), err); 2117c4d770d7SUlf Hansson 2118c4d770d7SUlf Hansson return err; 2119c4d770d7SUlf Hansson } 2120c4d770d7SUlf Hansson 2121c4d770d7SUlf Hansson /* 2122c4d770d7SUlf Hansson * Callback for runtime_resume. 2123c4d770d7SUlf Hansson */ 2124c4d770d7SUlf Hansson static int mmc_runtime_resume(struct mmc_host *host) 2125c4d770d7SUlf Hansson { 2126c4d770d7SUlf Hansson int err; 2127c4d770d7SUlf Hansson 21280cb403a2SUlf Hansson err = _mmc_resume(host); 2129520322d9SAdrian Hunter if (err && err != -ENOMEDIUM) 2130c29536e8SUlf Hansson pr_err("%s: error %d doing runtime resume\n", 2131c4d770d7SUlf Hansson mmc_hostname(host), err); 2132c4d770d7SUlf Hansson 2133c4d770d7SUlf Hansson return 0; 2134c4d770d7SUlf Hansson } 2135c4d770d7SUlf Hansson 213688bed3a6SUlf Hansson static int mmc_can_reset(struct mmc_card *card) 2137f855a371SJohan Rudholm { 2138f855a371SJohan Rudholm u8 rst_n_function; 2139f855a371SJohan Rudholm 2140f855a371SJohan Rudholm rst_n_function = card->ext_csd.rst_n_function; 2141f855a371SJohan Rudholm if ((rst_n_function & EXT_CSD_RST_N_EN_MASK) != EXT_CSD_RST_N_ENABLED) 2142f855a371SJohan Rudholm return 0; 2143f855a371SJohan Rudholm return 1; 2144f855a371SJohan Rudholm } 2145f855a371SJohan Rudholm 21463a3db603SUlf Hansson static int _mmc_hw_reset(struct mmc_host *host) 2147f855a371SJohan Rudholm { 2148f855a371SJohan Rudholm struct mmc_card *card = host->card; 2149f855a371SJohan Rudholm 2150437db4c6SAdrian Hunter /* 2151437db4c6SAdrian Hunter * In the case of recovery, we can't expect flushing the cache to work 2152437db4c6SAdrian Hunter * always, but we have a go and ignore errors. 2153437db4c6SAdrian Hunter */ 2154437db4c6SAdrian Hunter mmc_flush_cache(host->card); 2155437db4c6SAdrian Hunter 21564e6c7178SGwendal Grignou if ((host->caps & MMC_CAP_HW_RESET) && host->ops->hw_reset && 21574e6c7178SGwendal Grignou mmc_can_reset(card)) { 21584e6c7178SGwendal Grignou /* If the card accept RST_n signal, send it. */ 2159f855a371SJohan Rudholm mmc_set_clock(host, host->f_init); 2160f855a371SJohan Rudholm host->ops->hw_reset(host); 2161f855a371SJohan Rudholm /* Set initial state and call mmc_set_ios */ 2162f855a371SJohan Rudholm mmc_set_initial_state(host); 21634e6c7178SGwendal Grignou } else { 21644e6c7178SGwendal Grignou /* Do a brute force power cycle */ 21654e6c7178SGwendal Grignou mmc_power_cycle(host, card->ocr); 216652c8212dSUlf Hansson mmc_pwrseq_reset(host); 21674e6c7178SGwendal Grignou } 2168364549ddSUlf Hansson return mmc_init_card(host, card->ocr, card); 2169f855a371SJohan Rudholm } 2170f855a371SJohan Rudholm 21719feae246SAdrian Hunter static const struct mmc_bus_ops mmc_ops = { 21729feae246SAdrian Hunter .remove = mmc_remove, 21739feae246SAdrian Hunter .detect = mmc_detect, 21749feae246SAdrian Hunter .suspend = mmc_suspend, 21759feae246SAdrian Hunter .resume = mmc_resume, 2176c4d770d7SUlf Hansson .runtime_suspend = mmc_runtime_suspend, 2177c4d770d7SUlf Hansson .runtime_resume = mmc_runtime_resume, 2178d3049504SAdrian Hunter .alive = mmc_alive, 2179486fdbbcSUlf Hansson .shutdown = mmc_shutdown, 21803a3db603SUlf Hansson .hw_reset = _mmc_hw_reset, 21819feae246SAdrian Hunter }; 21829feae246SAdrian Hunter 21836abaa0c9SPierre Ossman /* 21846abaa0c9SPierre Ossman * Starting point for MMC card init. 21856abaa0c9SPierre Ossman */ 2186807e8e40SAndy Ross int mmc_attach_mmc(struct mmc_host *host) 21876abaa0c9SPierre Ossman { 21886abaa0c9SPierre Ossman int err; 218969041150SUlf Hansson u32 ocr, rocr; 21906abaa0c9SPierre Ossman 2191d84075c8SPierre Ossman WARN_ON(!host->claimed); 21926abaa0c9SPierre Ossman 219344669034SStefan Nilsson XK /* Set correct bus mode for MMC before attempting attach */ 219444669034SStefan Nilsson XK if (!mmc_host_is_spi(host)) 219544669034SStefan Nilsson XK mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); 219644669034SStefan Nilsson XK 2197807e8e40SAndy Ross err = mmc_send_op_cond(host, 0, &ocr); 2198807e8e40SAndy Ross if (err) 2199807e8e40SAndy Ross return err; 2200807e8e40SAndy Ross 22012501c917SUlf Hansson mmc_attach_bus(host, &mmc_ops); 22028f230f45STakashi Iwai if (host->ocr_avail_mmc) 22038f230f45STakashi Iwai host->ocr_avail = host->ocr_avail_mmc; 22046abaa0c9SPierre Ossman 22056abaa0c9SPierre Ossman /* 2206af517150SDavid Brownell * We need to get OCR a different way for SPI. 2207af517150SDavid Brownell */ 2208af517150SDavid Brownell if (mmc_host_is_spi(host)) { 2209af517150SDavid Brownell err = mmc_spi_read_ocr(host, 1, &ocr); 2210af517150SDavid Brownell if (err) 2211af517150SDavid Brownell goto err; 2212af517150SDavid Brownell } 2213af517150SDavid Brownell 221469041150SUlf Hansson rocr = mmc_select_voltage(host, ocr); 22156abaa0c9SPierre Ossman 22166abaa0c9SPierre Ossman /* 22176abaa0c9SPierre Ossman * Can we support the voltage of the card? 22186abaa0c9SPierre Ossman */ 221969041150SUlf Hansson if (!rocr) { 2220109b5bedSPierre Ossman err = -EINVAL; 22216abaa0c9SPierre Ossman goto err; 2222109b5bedSPierre Ossman } 22236abaa0c9SPierre Ossman 22246abaa0c9SPierre Ossman /* 22256abaa0c9SPierre Ossman * Detect and init the card. 22266abaa0c9SPierre Ossman */ 222769041150SUlf Hansson err = mmc_init_card(host, rocr, NULL); 222817b0429dSPierre Ossman if (err) 22296abaa0c9SPierre Ossman goto err; 22306abaa0c9SPierre Ossman 22316abaa0c9SPierre Ossman mmc_release_host(host); 22324101c16aSPierre Ossman err = mmc_add_card(host->card); 22337ea239d9SPierre Ossman if (err) 22342986d0bfSPierre Ossman goto remove_card; 22357ea239d9SPierre Ossman 22362860d060SSergei Shtylyov mmc_claim_host(host); 22377ea239d9SPierre Ossman return 0; 22387ea239d9SPierre Ossman 22392986d0bfSPierre Ossman remove_card: 22406abaa0c9SPierre Ossman mmc_remove_card(host->card); 22412986d0bfSPierre Ossman mmc_claim_host(host); 2242807e8e40SAndy Ross host->card = NULL; 22437ea239d9SPierre Ossman err: 22447ea239d9SPierre Ossman mmc_detach_bus(host); 22457ea239d9SPierre Ossman 2246a3c76eb9SGirish K S pr_err("%s: error %d whilst initialising MMC card\n", 2247109b5bedSPierre Ossman mmc_hostname(host), err); 2248109b5bedSPierre Ossman 2249adf66a0dSPierre Ossman return err; 22507ea239d9SPierre Ossman } 2251