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); 7945fb06af7SBojan Prtvar MMC_DEV_ATTR(ocr, "%08x\n", card->ocr); 795b658af71SAdrian Hunter MMC_DEV_ATTR(cmdq_en, "%d\n", card->ext_csd.cmdq_en); 79651ec92e2SPierre Ossman 7970f762426SGwendal Grignou static ssize_t mmc_fwrev_show(struct device *dev, 7980f762426SGwendal Grignou struct device_attribute *attr, 7990f762426SGwendal Grignou char *buf) 8000f762426SGwendal Grignou { 8010f762426SGwendal Grignou struct mmc_card *card = mmc_dev_to_card(dev); 8020f762426SGwendal Grignou 8030f762426SGwendal Grignou if (card->ext_csd.rev < 7) { 8040f762426SGwendal Grignou return sprintf(buf, "0x%x\n", card->cid.fwrev); 8050f762426SGwendal Grignou } else { 8060f762426SGwendal Grignou return sprintf(buf, "0x%*phN\n", MMC_FIRMWARE_LEN, 8070f762426SGwendal Grignou card->ext_csd.fwrev); 8080f762426SGwendal Grignou } 8090f762426SGwendal Grignou } 8100f762426SGwendal Grignou 8110f762426SGwendal Grignou static DEVICE_ATTR(fwrev, S_IRUGO, mmc_fwrev_show, NULL); 8120f762426SGwendal Grignou 8136825a606SBojan Prtvar static ssize_t mmc_dsr_show(struct device *dev, 8146825a606SBojan Prtvar struct device_attribute *attr, 8156825a606SBojan Prtvar char *buf) 8166825a606SBojan Prtvar { 8176825a606SBojan Prtvar struct mmc_card *card = mmc_dev_to_card(dev); 8186825a606SBojan Prtvar struct mmc_host *host = card->host; 8196825a606SBojan Prtvar 8206825a606SBojan Prtvar if (card->csd.dsr_imp && host->dsr_req) 8216825a606SBojan Prtvar return sprintf(buf, "0x%x\n", host->dsr); 8226825a606SBojan Prtvar else 8236825a606SBojan Prtvar /* return default DSR value */ 8246825a606SBojan Prtvar return sprintf(buf, "0x%x\n", 0x404); 8256825a606SBojan Prtvar } 8266825a606SBojan Prtvar 8276825a606SBojan Prtvar static DEVICE_ATTR(dsr, S_IRUGO, mmc_dsr_show, NULL); 8286825a606SBojan Prtvar 82951ec92e2SPierre Ossman static struct attribute *mmc_std_attrs[] = { 83051ec92e2SPierre Ossman &dev_attr_cid.attr, 83151ec92e2SPierre Ossman &dev_attr_csd.attr, 83251ec92e2SPierre Ossman &dev_attr_date.attr, 833dfe86cbaSAdrian Hunter &dev_attr_erase_size.attr, 834dfe86cbaSAdrian Hunter &dev_attr_preferred_erase_size.attr, 83551ec92e2SPierre Ossman &dev_attr_fwrev.attr, 8360f762426SGwendal Grignou &dev_attr_ffu_capable.attr, 83751ec92e2SPierre Ossman &dev_attr_hwrev.attr, 83851ec92e2SPierre Ossman &dev_attr_manfid.attr, 83951ec92e2SPierre Ossman &dev_attr_name.attr, 84051ec92e2SPierre Ossman &dev_attr_oemid.attr, 84151e7e8b6SBernie Thompson &dev_attr_prv.attr, 84204fa0540SJin Qian &dev_attr_rev.attr, 84346bc5c40SJungseung Lee &dev_attr_pre_eol_info.attr, 84446bc5c40SJungseung Lee &dev_attr_life_time.attr, 84551ec92e2SPierre Ossman &dev_attr_serial.attr, 846709de99dSChuanxiao Dong &dev_attr_enhanced_area_offset.attr, 847709de99dSChuanxiao Dong &dev_attr_enhanced_area_size.attr, 848188cc042SLoic Pallardy &dev_attr_raw_rpmb_size_mult.attr, 849188cc042SLoic Pallardy &dev_attr_rel_sectors.attr, 8505fb06af7SBojan Prtvar &dev_attr_ocr.attr, 8516825a606SBojan Prtvar &dev_attr_dsr.attr, 852b658af71SAdrian Hunter &dev_attr_cmdq_en.attr, 85351ec92e2SPierre Ossman NULL, 85451ec92e2SPierre Ossman }; 855d1e58212SAxel Lin ATTRIBUTE_GROUPS(mmc_std); 85651ec92e2SPierre Ossman 85751ec92e2SPierre Ossman static struct device_type mmc_type = { 858d1e58212SAxel Lin .groups = mmc_std_groups, 85951ec92e2SPierre Ossman }; 86051ec92e2SPierre Ossman 8617ea239d9SPierre Ossman /* 862b87d8dbfSGirish K S * Select the PowerClass for the current bus width 863b87d8dbfSGirish K S * If power class is defined for 4/8 bit bus in the 864b87d8dbfSGirish K S * extended CSD register, select it by executing the 865b87d8dbfSGirish K S * mmc_switch command. 866b87d8dbfSGirish K S */ 8672385049dSSeungwon Jeon static int __mmc_select_powerclass(struct mmc_card *card, 86860443712SFredrik Soderstedt unsigned int bus_width) 869b87d8dbfSGirish K S { 8702385049dSSeungwon Jeon struct mmc_host *host = card->host; 8712385049dSSeungwon Jeon struct mmc_ext_csd *ext_csd = &card->ext_csd; 87260443712SFredrik Soderstedt unsigned int pwrclass_val = 0; 8732385049dSSeungwon Jeon int err = 0; 874b87d8dbfSGirish K S 875b87d8dbfSGirish K S switch (1 << host->ios.vdd) { 876b87d8dbfSGirish K S case MMC_VDD_165_195: 8772385049dSSeungwon Jeon if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) 8782385049dSSeungwon Jeon pwrclass_val = ext_csd->raw_pwr_cl_26_195; 8792385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR) 88060443712SFredrik Soderstedt pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? 8812385049dSSeungwon Jeon ext_csd->raw_pwr_cl_52_195 : 8822385049dSSeungwon Jeon ext_csd->raw_pwr_cl_ddr_52_195; 8832385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HS200_MAX_DTR) 8842385049dSSeungwon Jeon pwrclass_val = ext_csd->raw_pwr_cl_200_195; 885b87d8dbfSGirish K S break; 88693fc5a47SSubhash Jadavani case MMC_VDD_27_28: 88793fc5a47SSubhash Jadavani case MMC_VDD_28_29: 88893fc5a47SSubhash Jadavani case MMC_VDD_29_30: 88993fc5a47SSubhash Jadavani case MMC_VDD_30_31: 89093fc5a47SSubhash Jadavani case MMC_VDD_31_32: 891b87d8dbfSGirish K S case MMC_VDD_32_33: 892b87d8dbfSGirish K S case MMC_VDD_33_34: 893b87d8dbfSGirish K S case MMC_VDD_34_35: 894b87d8dbfSGirish K S case MMC_VDD_35_36: 8952385049dSSeungwon Jeon if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) 8962385049dSSeungwon Jeon pwrclass_val = ext_csd->raw_pwr_cl_26_360; 8972385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR) 89860443712SFredrik Soderstedt pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? 8992385049dSSeungwon Jeon ext_csd->raw_pwr_cl_52_360 : 9002385049dSSeungwon Jeon ext_csd->raw_pwr_cl_ddr_52_360; 9012385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HS200_MAX_DTR) 9020a5b6438SSeungwon Jeon pwrclass_val = (bus_width == EXT_CSD_DDR_BUS_WIDTH_8) ? 9030a5b6438SSeungwon Jeon ext_csd->raw_pwr_cl_ddr_200_360 : 9040a5b6438SSeungwon Jeon ext_csd->raw_pwr_cl_200_360; 905b87d8dbfSGirish K S break; 906b87d8dbfSGirish K S default: 9076606110dSJoe Perches pr_warn("%s: Voltage range not supported for power class\n", 9086606110dSJoe Perches mmc_hostname(host)); 909b87d8dbfSGirish K S return -EINVAL; 910b87d8dbfSGirish K S } 911b87d8dbfSGirish K S 912b87d8dbfSGirish K S if (bus_width & (EXT_CSD_BUS_WIDTH_8 | EXT_CSD_DDR_BUS_WIDTH_8)) 913b87d8dbfSGirish K S pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_8BIT_MASK) >> 914b87d8dbfSGirish K S EXT_CSD_PWR_CL_8BIT_SHIFT; 915b87d8dbfSGirish K S else 916b87d8dbfSGirish K S pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_4BIT_MASK) >> 917b87d8dbfSGirish K S EXT_CSD_PWR_CL_4BIT_SHIFT; 918b87d8dbfSGirish K S 919b87d8dbfSGirish K S /* If the power class is different from the default value */ 920b87d8dbfSGirish K S if (pwrclass_val > 0) { 921b87d8dbfSGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 922b87d8dbfSGirish K S EXT_CSD_POWER_CLASS, 923b87d8dbfSGirish K S pwrclass_val, 92471fe3eb0SSeungwon Jeon card->ext_csd.generic_cmd6_time); 925b87d8dbfSGirish K S } 926b87d8dbfSGirish K S 927b87d8dbfSGirish K S return err; 928b87d8dbfSGirish K S } 929b87d8dbfSGirish K S 9302385049dSSeungwon Jeon static int mmc_select_powerclass(struct mmc_card *card) 9312385049dSSeungwon Jeon { 9322385049dSSeungwon Jeon struct mmc_host *host = card->host; 9332385049dSSeungwon Jeon u32 bus_width, ext_csd_bits; 9342385049dSSeungwon Jeon int err, ddr; 9352385049dSSeungwon Jeon 9362385049dSSeungwon Jeon /* Power class selection is supported for versions >= 4.0 */ 937148bcab2SUlf Hansson if (!mmc_can_ext_csd(card)) 9382385049dSSeungwon Jeon return 0; 9392385049dSSeungwon Jeon 9402385049dSSeungwon Jeon bus_width = host->ios.bus_width; 9412385049dSSeungwon Jeon /* Power class values are defined only for 4/8 bit bus */ 9422385049dSSeungwon Jeon if (bus_width == MMC_BUS_WIDTH_1) 9432385049dSSeungwon Jeon return 0; 9442385049dSSeungwon Jeon 9452385049dSSeungwon Jeon ddr = card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52; 9462385049dSSeungwon Jeon if (ddr) 9472385049dSSeungwon Jeon ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? 9482385049dSSeungwon Jeon EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; 9492385049dSSeungwon Jeon else 9502385049dSSeungwon Jeon ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? 9512385049dSSeungwon Jeon EXT_CSD_BUS_WIDTH_8 : EXT_CSD_BUS_WIDTH_4; 9522385049dSSeungwon Jeon 9532385049dSSeungwon Jeon err = __mmc_select_powerclass(card, ext_csd_bits); 9542385049dSSeungwon Jeon if (err) 9552385049dSSeungwon Jeon pr_warn("%s: power class selection to bus width %d ddr %d failed\n", 9562385049dSSeungwon Jeon mmc_hostname(host), 1 << bus_width, ddr); 9572385049dSSeungwon Jeon 9582385049dSSeungwon Jeon return err; 9592385049dSSeungwon Jeon } 9602385049dSSeungwon Jeon 961b87d8dbfSGirish K S /* 962577fb131SSeungwon Jeon * Set the bus speed for the selected speed mode. 963a4924c71SGirish K S */ 964577fb131SSeungwon Jeon static void mmc_set_bus_speed(struct mmc_card *card) 965a4924c71SGirish K S { 966577fb131SSeungwon Jeon unsigned int max_dtr = (unsigned int)-1; 967577fb131SSeungwon Jeon 9680a5b6438SSeungwon Jeon if ((mmc_card_hs200(card) || mmc_card_hs400(card)) && 9690a5b6438SSeungwon Jeon max_dtr > card->ext_csd.hs200_max_dtr) 970577fb131SSeungwon Jeon max_dtr = card->ext_csd.hs200_max_dtr; 971577fb131SSeungwon Jeon else if (mmc_card_hs(card) && max_dtr > card->ext_csd.hs_max_dtr) 972577fb131SSeungwon Jeon max_dtr = card->ext_csd.hs_max_dtr; 973577fb131SSeungwon Jeon else if (max_dtr > card->csd.max_dtr) 974577fb131SSeungwon Jeon max_dtr = card->csd.max_dtr; 975577fb131SSeungwon Jeon 976577fb131SSeungwon Jeon mmc_set_clock(card->host, max_dtr); 977577fb131SSeungwon Jeon } 978577fb131SSeungwon Jeon 979577fb131SSeungwon Jeon /* 980577fb131SSeungwon Jeon * Select the bus width amoung 4-bit and 8-bit(SDR). 981577fb131SSeungwon Jeon * If the bus width is changed successfully, return the selected width value. 982577fb131SSeungwon Jeon * Zero is returned instead of error value if the wide width is not supported. 983577fb131SSeungwon Jeon */ 984577fb131SSeungwon Jeon static int mmc_select_bus_width(struct mmc_card *card) 985577fb131SSeungwon Jeon { 986a4924c71SGirish K S static unsigned ext_csd_bits[] = { 987a4924c71SGirish K S EXT_CSD_BUS_WIDTH_8, 988577fb131SSeungwon Jeon EXT_CSD_BUS_WIDTH_4, 989a4924c71SGirish K S }; 990a4924c71SGirish K S static unsigned bus_widths[] = { 991a4924c71SGirish K S MMC_BUS_WIDTH_8, 992577fb131SSeungwon Jeon MMC_BUS_WIDTH_4, 993a4924c71SGirish K S }; 994577fb131SSeungwon Jeon struct mmc_host *host = card->host; 995577fb131SSeungwon Jeon unsigned idx, bus_width = 0; 996577fb131SSeungwon Jeon int err = 0; 997a4924c71SGirish K S 9981c2d26e3SAlexandre Belloni if (!mmc_can_ext_csd(card) || 999577fb131SSeungwon Jeon !(host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) 1000577fb131SSeungwon Jeon return 0; 1001a4924c71SGirish K S 1002577fb131SSeungwon Jeon idx = (host->caps & MMC_CAP_8_BIT_DATA) ? 0 : 1; 1003a4924c71SGirish K S 1004a4924c71SGirish K S /* 1005a4924c71SGirish K S * Unlike SD, MMC cards dont have a configuration register to notify 1006a4924c71SGirish K S * supported bus width. So bus test command should be run to identify 1007a4924c71SGirish K S * the supported bus width or compare the ext csd values of current 1008a4924c71SGirish K S * bus width and ext csd values of 1 bit mode read earlier. 1009a4924c71SGirish K S */ 1010577fb131SSeungwon Jeon for (; idx < ARRAY_SIZE(bus_widths); idx++) { 1011a4924c71SGirish K S /* 1012a4924c71SGirish K S * Host is capable of 8bit transfer, then switch 1013a4924c71SGirish K S * the device to work in 8bit transfer mode. If the 1014a4924c71SGirish K S * mmc switch command returns error then switch to 1015a4924c71SGirish K S * 4bit transfer mode. On success set the corresponding 1016a4924c71SGirish K S * bus width on the host. 1017a4924c71SGirish K S */ 1018a4924c71SGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1019a4924c71SGirish K S EXT_CSD_BUS_WIDTH, 1020a4924c71SGirish K S ext_csd_bits[idx], 1021a4924c71SGirish K S card->ext_csd.generic_cmd6_time); 1022a4924c71SGirish K S if (err) 1023a4924c71SGirish K S continue; 1024a4924c71SGirish K S 1025577fb131SSeungwon Jeon bus_width = bus_widths[idx]; 1026577fb131SSeungwon Jeon mmc_set_bus_width(host, bus_width); 1027a4924c71SGirish K S 1028577fb131SSeungwon Jeon /* 1029577fb131SSeungwon Jeon * If controller can't handle bus width test, 1030577fb131SSeungwon Jeon * compare ext_csd previously read in 1 bit mode 1031577fb131SSeungwon Jeon * against ext_csd at new bus width 1032577fb131SSeungwon Jeon */ 1033a4924c71SGirish K S if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST)) 1034577fb131SSeungwon Jeon err = mmc_compare_ext_csds(card, bus_width); 1035a4924c71SGirish K S else 1036577fb131SSeungwon Jeon err = mmc_bus_test(card, bus_width); 1037577fb131SSeungwon Jeon 1038577fb131SSeungwon Jeon if (!err) { 1039577fb131SSeungwon Jeon err = bus_width; 1040a4924c71SGirish K S break; 1041577fb131SSeungwon Jeon } else { 1042577fb131SSeungwon Jeon pr_warn("%s: switch to bus width %d failed\n", 1043ed9feec7SWolfram Sang mmc_hostname(host), 1 << bus_width); 1044577fb131SSeungwon Jeon } 1045a4924c71SGirish K S } 1046a4924c71SGirish K S 1047577fb131SSeungwon Jeon return err; 1048577fb131SSeungwon Jeon } 1049577fb131SSeungwon Jeon 1050577fb131SSeungwon Jeon /* 1051577fb131SSeungwon Jeon * Switch to the high-speed mode 1052577fb131SSeungwon Jeon */ 1053577fb131SSeungwon Jeon static int mmc_select_hs(struct mmc_card *card) 1054577fb131SSeungwon Jeon { 1055577fb131SSeungwon Jeon int err; 1056577fb131SSeungwon Jeon 10574509f847SUlf Hansson err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1058577fb131SSeungwon Jeon EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS, 105953e60650SUlf Hansson card->ext_csd.generic_cmd6_time, MMC_TIMING_MMC_HS, 106053e60650SUlf Hansson true, true, true); 106167d35960SJungseung Lee if (err) 106267d35960SJungseung Lee pr_warn("%s: switch to high-speed failed, err:%d\n", 106367d35960SJungseung Lee mmc_hostname(card->host), err); 106467d35960SJungseung Lee 1065577fb131SSeungwon Jeon return err; 1066577fb131SSeungwon Jeon } 1067577fb131SSeungwon Jeon 1068577fb131SSeungwon Jeon /* 1069577fb131SSeungwon Jeon * Activate wide bus and DDR if supported. 1070577fb131SSeungwon Jeon */ 1071577fb131SSeungwon Jeon static int mmc_select_hs_ddr(struct mmc_card *card) 1072577fb131SSeungwon Jeon { 1073577fb131SSeungwon Jeon struct mmc_host *host = card->host; 1074577fb131SSeungwon Jeon u32 bus_width, ext_csd_bits; 1075577fb131SSeungwon Jeon int err = 0; 1076577fb131SSeungwon Jeon 1077577fb131SSeungwon Jeon if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52)) 1078577fb131SSeungwon Jeon return 0; 1079577fb131SSeungwon Jeon 1080577fb131SSeungwon Jeon bus_width = host->ios.bus_width; 1081577fb131SSeungwon Jeon if (bus_width == MMC_BUS_WIDTH_1) 1082577fb131SSeungwon Jeon return 0; 1083577fb131SSeungwon Jeon 1084577fb131SSeungwon Jeon ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? 1085577fb131SSeungwon Jeon EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; 1086577fb131SSeungwon Jeon 1087e173f891SUlf Hansson err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1088577fb131SSeungwon Jeon EXT_CSD_BUS_WIDTH, 1089577fb131SSeungwon Jeon ext_csd_bits, 1090e173f891SUlf Hansson card->ext_csd.generic_cmd6_time, 1091e173f891SUlf Hansson MMC_TIMING_MMC_DDR52, 1092e173f891SUlf Hansson true, true, true); 1093577fb131SSeungwon Jeon if (err) { 10944b75bffcSAndrew Gabbasov pr_err("%s: switch to bus width %d ddr failed\n", 1095577fb131SSeungwon Jeon mmc_hostname(host), 1 << bus_width); 1096577fb131SSeungwon Jeon return err; 1097577fb131SSeungwon Jeon } 1098577fb131SSeungwon Jeon 1099577fb131SSeungwon Jeon /* 1100577fb131SSeungwon Jeon * eMMC cards can support 3.3V to 1.2V i/o (vccq) 1101577fb131SSeungwon Jeon * signaling. 1102577fb131SSeungwon Jeon * 1103577fb131SSeungwon Jeon * EXT_CSD_CARD_TYPE_DDR_1_8V means 3.3V or 1.8V vccq. 1104577fb131SSeungwon Jeon * 1105577fb131SSeungwon Jeon * 1.8V vccq at 3.3V core voltage (vcc) is not required 1106577fb131SSeungwon Jeon * in the JEDEC spec for DDR. 1107577fb131SSeungwon Jeon * 1108312449efSChuanxiao.Dong * Even (e)MMC card can support 3.3v to 1.2v vccq, but not all 1109312449efSChuanxiao.Dong * host controller can support this, like some of the SDHCI 1110312449efSChuanxiao.Dong * controller which connect to an eMMC device. Some of these 1111312449efSChuanxiao.Dong * host controller still needs to use 1.8v vccq for supporting 1112312449efSChuanxiao.Dong * DDR mode. 1113312449efSChuanxiao.Dong * 1114312449efSChuanxiao.Dong * So the sequence will be: 1115312449efSChuanxiao.Dong * if (host and device can both support 1.2v IO) 1116312449efSChuanxiao.Dong * use 1.2v IO; 1117312449efSChuanxiao.Dong * else if (host and device can both support 1.8v IO) 1118312449efSChuanxiao.Dong * use 1.8v IO; 1119312449efSChuanxiao.Dong * so if host and device can only support 3.3v IO, this is the 1120312449efSChuanxiao.Dong * last choice. 1121577fb131SSeungwon Jeon * 1122577fb131SSeungwon Jeon * WARNING: eMMC rules are NOT the same as SD DDR 1123577fb131SSeungwon Jeon */ 112420f921bbSUlf Hansson if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_2V) { 11254e74b6b3SUlf Hansson err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); 112620f921bbSUlf Hansson if (!err) 112720f921bbSUlf Hansson return 0; 112820f921bbSUlf Hansson } 1129577fb131SSeungwon Jeon 113020f921bbSUlf Hansson if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_8V && 113120f921bbSUlf Hansson host->caps & MMC_CAP_1_8V_DDR) 11324e74b6b3SUlf Hansson err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); 1133312449efSChuanxiao.Dong 1134312449efSChuanxiao.Dong /* make sure vccq is 3.3v after switching disaster */ 1135312449efSChuanxiao.Dong if (err) 11364e74b6b3SUlf Hansson err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330); 1137312449efSChuanxiao.Dong 1138577fb131SSeungwon Jeon return err; 1139577fb131SSeungwon Jeon } 1140577fb131SSeungwon Jeon 11410a5b6438SSeungwon Jeon static int mmc_select_hs400(struct mmc_card *card) 11420a5b6438SSeungwon Jeon { 11430a5b6438SSeungwon Jeon struct mmc_host *host = card->host; 114451b12f77SAdrian Hunter unsigned int max_dtr; 11450a5b6438SSeungwon Jeon int err = 0; 1146cc4f414cSAdrian Hunter u8 val; 11470a5b6438SSeungwon Jeon 11480a5b6438SSeungwon Jeon /* 11490a5b6438SSeungwon Jeon * HS400 mode requires 8-bit bus width 11500a5b6438SSeungwon Jeon */ 11510a5b6438SSeungwon Jeon if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 && 11520a5b6438SSeungwon Jeon host->ios.bus_width == MMC_BUS_WIDTH_8)) 11530a5b6438SSeungwon Jeon return 0; 11540a5b6438SSeungwon Jeon 115551b12f77SAdrian Hunter /* Switch card to HS mode */ 1156adb24d42SWenkai Du val = EXT_CSD_TIMING_HS; 11570a5b6438SSeungwon Jeon err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1158cc4f414cSAdrian Hunter EXT_CSD_HS_TIMING, val, 1159aa33ce3cSUlf Hansson card->ext_csd.generic_cmd6_time, 0, 116008573eafSChaotian Jing true, false, true); 11610a5b6438SSeungwon Jeon if (err) { 11624b75bffcSAndrew Gabbasov pr_err("%s: switch to high-speed from hs200 failed, err:%d\n", 11630a5b6438SSeungwon Jeon mmc_hostname(host), err); 11640a5b6438SSeungwon Jeon return err; 11650a5b6438SSeungwon Jeon } 11660a5b6438SSeungwon Jeon 116751b12f77SAdrian Hunter /* Set host controller to HS timing */ 116851b12f77SAdrian Hunter mmc_set_timing(card->host, MMC_TIMING_MMC_HS); 116951b12f77SAdrian Hunter 1170649c6059SZiyuan Xu /* Reduce frequency to HS frequency */ 1171649c6059SZiyuan Xu max_dtr = card->ext_csd.hs_max_dtr; 1172649c6059SZiyuan Xu mmc_set_clock(host, max_dtr); 1173649c6059SZiyuan Xu 1174d2302933SAdrian Hunter err = mmc_switch_status(card); 1175d2302933SAdrian Hunter if (err) 1176d2302933SAdrian Hunter goto out_err; 1177d2302933SAdrian Hunter 1178d2302933SAdrian Hunter /* Switch card to DDR */ 11790a5b6438SSeungwon Jeon err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 11800a5b6438SSeungwon Jeon EXT_CSD_BUS_WIDTH, 11810a5b6438SSeungwon Jeon EXT_CSD_DDR_BUS_WIDTH_8, 11820a5b6438SSeungwon Jeon card->ext_csd.generic_cmd6_time); 11830a5b6438SSeungwon Jeon if (err) { 11844b75bffcSAndrew Gabbasov pr_err("%s: switch to bus width for hs400 failed, err:%d\n", 11850a5b6438SSeungwon Jeon mmc_hostname(host), err); 11860a5b6438SSeungwon Jeon return err; 11870a5b6438SSeungwon Jeon } 11880a5b6438SSeungwon Jeon 1189d2302933SAdrian Hunter /* Switch card to HS400 */ 1190cc4f414cSAdrian Hunter val = EXT_CSD_TIMING_HS400 | 1191cc4f414cSAdrian Hunter card->drive_strength << EXT_CSD_DRV_STR_SHIFT; 11920a5b6438SSeungwon Jeon err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1193cc4f414cSAdrian Hunter EXT_CSD_HS_TIMING, val, 1194aa33ce3cSUlf Hansson card->ext_csd.generic_cmd6_time, 0, 119508573eafSChaotian Jing true, false, true); 11960a5b6438SSeungwon Jeon if (err) { 11974b75bffcSAndrew Gabbasov pr_err("%s: switch to hs400 failed, err:%d\n", 11980a5b6438SSeungwon Jeon mmc_hostname(host), err); 11990a5b6438SSeungwon Jeon return err; 12000a5b6438SSeungwon Jeon } 12010a5b6438SSeungwon Jeon 1202d2302933SAdrian Hunter /* Set host controller to HS400 timing and frequency */ 12030a5b6438SSeungwon Jeon mmc_set_timing(host, MMC_TIMING_MMC_HS400); 12040a5b6438SSeungwon Jeon mmc_set_bus_speed(card); 12050a5b6438SSeungwon Jeon 1206d2302933SAdrian Hunter err = mmc_switch_status(card); 1207d2302933SAdrian Hunter if (err) 1208d2302933SAdrian Hunter goto out_err; 1209d2302933SAdrian Hunter 12100a5b6438SSeungwon Jeon return 0; 1211d2302933SAdrian Hunter 1212d2302933SAdrian Hunter out_err: 1213d2302933SAdrian Hunter pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), 1214d2302933SAdrian Hunter __func__, err); 1215d2302933SAdrian Hunter return err; 12160a5b6438SSeungwon Jeon } 12170a5b6438SSeungwon Jeon 12186376f69dSAdrian Hunter int mmc_hs200_to_hs400(struct mmc_card *card) 12196376f69dSAdrian Hunter { 12206376f69dSAdrian Hunter return mmc_select_hs400(card); 12216376f69dSAdrian Hunter } 12226376f69dSAdrian Hunter 12236376f69dSAdrian Hunter int mmc_hs400_to_hs200(struct mmc_card *card) 12246376f69dSAdrian Hunter { 12256376f69dSAdrian Hunter struct mmc_host *host = card->host; 12266376f69dSAdrian Hunter unsigned int max_dtr; 12276376f69dSAdrian Hunter int err; 1228cc4f414cSAdrian Hunter u8 val; 12296376f69dSAdrian Hunter 12306376f69dSAdrian Hunter /* Reduce frequency to HS */ 12316376f69dSAdrian Hunter max_dtr = card->ext_csd.hs_max_dtr; 12326376f69dSAdrian Hunter mmc_set_clock(host, max_dtr); 12336376f69dSAdrian Hunter 12346376f69dSAdrian Hunter /* Switch HS400 to HS DDR */ 1235adb24d42SWenkai Du val = EXT_CSD_TIMING_HS; 12366376f69dSAdrian Hunter err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, 1237aa33ce3cSUlf Hansson val, card->ext_csd.generic_cmd6_time, 0, 123808573eafSChaotian Jing true, false, true); 12396376f69dSAdrian Hunter if (err) 12406376f69dSAdrian Hunter goto out_err; 12416376f69dSAdrian Hunter 12426376f69dSAdrian Hunter mmc_set_timing(host, MMC_TIMING_MMC_DDR52); 12436376f69dSAdrian Hunter 12446376f69dSAdrian Hunter err = mmc_switch_status(card); 12456376f69dSAdrian Hunter if (err) 12466376f69dSAdrian Hunter goto out_err; 12476376f69dSAdrian Hunter 12486376f69dSAdrian Hunter /* Switch HS DDR to HS */ 12496376f69dSAdrian Hunter err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BUS_WIDTH, 12506376f69dSAdrian Hunter EXT_CSD_BUS_WIDTH_8, card->ext_csd.generic_cmd6_time, 1251aa33ce3cSUlf Hansson 0, true, false, true); 12526376f69dSAdrian Hunter if (err) 12536376f69dSAdrian Hunter goto out_err; 12546376f69dSAdrian Hunter 12556376f69dSAdrian Hunter mmc_set_timing(host, MMC_TIMING_MMC_HS); 12566376f69dSAdrian Hunter 12576376f69dSAdrian Hunter err = mmc_switch_status(card); 12586376f69dSAdrian Hunter if (err) 12596376f69dSAdrian Hunter goto out_err; 12606376f69dSAdrian Hunter 12616376f69dSAdrian Hunter /* Switch HS to HS200 */ 1262cc4f414cSAdrian Hunter val = EXT_CSD_TIMING_HS200 | 1263cc4f414cSAdrian Hunter card->drive_strength << EXT_CSD_DRV_STR_SHIFT; 12646376f69dSAdrian Hunter err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, 1265aa33ce3cSUlf Hansson val, card->ext_csd.generic_cmd6_time, 0, 126608573eafSChaotian Jing true, false, true); 12676376f69dSAdrian Hunter if (err) 12686376f69dSAdrian Hunter goto out_err; 12696376f69dSAdrian Hunter 12706376f69dSAdrian Hunter mmc_set_timing(host, MMC_TIMING_MMC_HS200); 12716376f69dSAdrian Hunter 1272ef3d2322SAdrian Hunter /* 1273ef3d2322SAdrian Hunter * For HS200, CRC errors are not a reliable way to know the switch 1274ef3d2322SAdrian Hunter * failed. If there really is a problem, we would expect tuning will 1275ef3d2322SAdrian Hunter * fail and the result ends up the same. 1276ef3d2322SAdrian Hunter */ 1277ef3d2322SAdrian Hunter err = __mmc_switch_status(card, false); 12786376f69dSAdrian Hunter if (err) 12796376f69dSAdrian Hunter goto out_err; 12806376f69dSAdrian Hunter 12816376f69dSAdrian Hunter mmc_set_bus_speed(card); 12826376f69dSAdrian Hunter 12836376f69dSAdrian Hunter return 0; 12846376f69dSAdrian Hunter 12856376f69dSAdrian Hunter out_err: 12866376f69dSAdrian Hunter pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), 12876376f69dSAdrian Hunter __func__, err); 12886376f69dSAdrian Hunter return err; 12896376f69dSAdrian Hunter } 12906376f69dSAdrian Hunter 1291fb458864SChanho Min static void mmc_select_driver_type(struct mmc_card *card) 1292fb458864SChanho Min { 1293fb458864SChanho Min int card_drv_type, drive_strength, drv_type; 12946186d06cSWolfram Sang int fixed_drv_type = card->host->fixed_drv_type; 1295fb458864SChanho Min 1296fb458864SChanho Min card_drv_type = card->ext_csd.raw_driver_strength | 1297fb458864SChanho Min mmc_driver_type_mask(0); 1298fb458864SChanho Min 12996186d06cSWolfram Sang if (fixed_drv_type >= 0) 13006186d06cSWolfram Sang drive_strength = card_drv_type & mmc_driver_type_mask(fixed_drv_type) 13016186d06cSWolfram Sang ? fixed_drv_type : 0; 13026186d06cSWolfram Sang else 1303fb458864SChanho Min drive_strength = mmc_select_drive_strength(card, 1304fb458864SChanho Min card->ext_csd.hs200_max_dtr, 1305fb458864SChanho Min card_drv_type, &drv_type); 1306fb458864SChanho Min 1307fb458864SChanho Min card->drive_strength = drive_strength; 1308fb458864SChanho Min 1309fb458864SChanho Min if (drv_type) 1310fb458864SChanho Min mmc_set_driver_type(card->host, drv_type); 1311fb458864SChanho Min } 1312fb458864SChanho Min 131381ac2af6SShawn Lin static int mmc_select_hs400es(struct mmc_card *card) 131481ac2af6SShawn Lin { 131581ac2af6SShawn Lin struct mmc_host *host = card->host; 131692ddd959SHaibo Chen int err = -EINVAL; 131781ac2af6SShawn Lin u8 val; 131881ac2af6SShawn Lin 131981ac2af6SShawn Lin if (!(host->caps & MMC_CAP_8_BIT_DATA)) { 132081ac2af6SShawn Lin err = -ENOTSUPP; 132181ac2af6SShawn Lin goto out_err; 132281ac2af6SShawn Lin } 132381ac2af6SShawn Lin 13241720d354SShawn Lin if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400_1_2V) 13254e74b6b3SUlf Hansson err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); 13261720d354SShawn Lin 13271720d354SShawn Lin if (err && card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400_1_8V) 13284e74b6b3SUlf Hansson err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); 13291720d354SShawn Lin 13301720d354SShawn Lin /* If fails try again during next card power cycle */ 13311720d354SShawn Lin if (err) 13321720d354SShawn Lin goto out_err; 13331720d354SShawn Lin 133481ac2af6SShawn Lin err = mmc_select_bus_width(card); 133581ac2af6SShawn Lin if (err < 0) 133681ac2af6SShawn Lin goto out_err; 133781ac2af6SShawn Lin 133881ac2af6SShawn Lin /* Switch card to HS mode */ 133953e60650SUlf Hansson err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 134053e60650SUlf Hansson EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS, 134153e60650SUlf Hansson card->ext_csd.generic_cmd6_time, 0, 134253e60650SUlf Hansson true, false, true); 134353e60650SUlf Hansson if (err) { 134453e60650SUlf Hansson pr_err("%s: switch to hs for hs400es failed, err:%d\n", 134553e60650SUlf Hansson mmc_hostname(host), err); 134653e60650SUlf Hansson goto out_err; 134753e60650SUlf Hansson } 134853e60650SUlf Hansson 134953e60650SUlf Hansson mmc_set_timing(host, MMC_TIMING_MMC_HS); 135053e60650SUlf Hansson err = mmc_switch_status(card); 135167d35960SJungseung Lee if (err) 135281ac2af6SShawn Lin goto out_err; 135381ac2af6SShawn Lin 13544f25580fSShawn Lin mmc_set_clock(host, card->ext_csd.hs_max_dtr); 13554f25580fSShawn Lin 135681ac2af6SShawn Lin /* Switch card to DDR with strobe bit */ 135781ac2af6SShawn Lin val = EXT_CSD_DDR_BUS_WIDTH_8 | EXT_CSD_BUS_WIDTH_STROBE; 135881ac2af6SShawn Lin err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 135981ac2af6SShawn Lin EXT_CSD_BUS_WIDTH, 136081ac2af6SShawn Lin val, 136181ac2af6SShawn Lin card->ext_csd.generic_cmd6_time); 136281ac2af6SShawn Lin if (err) { 136381ac2af6SShawn Lin pr_err("%s: switch to bus width for hs400es failed, err:%d\n", 136481ac2af6SShawn Lin mmc_hostname(host), err); 136581ac2af6SShawn Lin goto out_err; 136681ac2af6SShawn Lin } 136781ac2af6SShawn Lin 1368fb458864SChanho Min mmc_select_driver_type(card); 1369fb458864SChanho Min 137081ac2af6SShawn Lin /* Switch card to HS400 */ 137181ac2af6SShawn Lin val = EXT_CSD_TIMING_HS400 | 137281ac2af6SShawn Lin card->drive_strength << EXT_CSD_DRV_STR_SHIFT; 137381ac2af6SShawn Lin err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 137481ac2af6SShawn Lin EXT_CSD_HS_TIMING, val, 1375aa33ce3cSUlf Hansson card->ext_csd.generic_cmd6_time, 0, 137681ac2af6SShawn Lin true, false, true); 137781ac2af6SShawn Lin if (err) { 137881ac2af6SShawn Lin pr_err("%s: switch to hs400es failed, err:%d\n", 137981ac2af6SShawn Lin mmc_hostname(host), err); 138081ac2af6SShawn Lin goto out_err; 138181ac2af6SShawn Lin } 138281ac2af6SShawn Lin 138381ac2af6SShawn Lin /* Set host controller to HS400 timing and frequency */ 138481ac2af6SShawn Lin mmc_set_timing(host, MMC_TIMING_MMC_HS400); 138581ac2af6SShawn Lin 138681ac2af6SShawn Lin /* Controller enable enhanced strobe function */ 138781ac2af6SShawn Lin host->ios.enhanced_strobe = true; 138881ac2af6SShawn Lin if (host->ops->hs400_enhanced_strobe) 138981ac2af6SShawn Lin host->ops->hs400_enhanced_strobe(host, &host->ios); 139081ac2af6SShawn Lin 139181ac2af6SShawn Lin err = mmc_switch_status(card); 139281ac2af6SShawn Lin if (err) 139381ac2af6SShawn Lin goto out_err; 139481ac2af6SShawn Lin 139581ac2af6SShawn Lin return 0; 139681ac2af6SShawn Lin 139781ac2af6SShawn Lin out_err: 139881ac2af6SShawn Lin pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), 139981ac2af6SShawn Lin __func__, err); 140081ac2af6SShawn Lin return err; 140181ac2af6SShawn Lin } 140281ac2af6SShawn Lin 1403577fb131SSeungwon Jeon /* 1404577fb131SSeungwon Jeon * For device supporting HS200 mode, the following sequence 1405577fb131SSeungwon Jeon * should be done before executing the tuning process. 1406577fb131SSeungwon Jeon * 1. set the desired bus width(4-bit or 8-bit, 1-bit is not supported) 1407577fb131SSeungwon Jeon * 2. switch to HS200 mode 1408577fb131SSeungwon Jeon * 3. set the clock to > 52Mhz and <=200MHz 1409577fb131SSeungwon Jeon */ 1410577fb131SSeungwon Jeon static int mmc_select_hs200(struct mmc_card *card) 1411577fb131SSeungwon Jeon { 1412577fb131SSeungwon Jeon struct mmc_host *host = card->host; 1413e51534c8SDong Aisheng unsigned int old_timing, old_signal_voltage; 1414577fb131SSeungwon Jeon int err = -EINVAL; 1415cc4f414cSAdrian Hunter u8 val; 1416577fb131SSeungwon Jeon 1417e51534c8SDong Aisheng old_signal_voltage = host->ios.signal_voltage; 1418577fb131SSeungwon Jeon if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_2V) 14194e74b6b3SUlf Hansson err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); 1420577fb131SSeungwon Jeon 1421577fb131SSeungwon Jeon if (err && card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_8V) 14224e74b6b3SUlf Hansson err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); 1423577fb131SSeungwon Jeon 1424577fb131SSeungwon Jeon /* If fails try again during next card power cycle */ 1425577fb131SSeungwon Jeon if (err) 1426e51534c8SDong Aisheng return err; 1427577fb131SSeungwon Jeon 1428cc4f414cSAdrian Hunter mmc_select_driver_type(card); 1429cc4f414cSAdrian Hunter 1430577fb131SSeungwon Jeon /* 1431577fb131SSeungwon Jeon * Set the bus width(4 or 8) with host's support and 1432577fb131SSeungwon Jeon * switch to HS200 mode if bus width is set successfully. 1433577fb131SSeungwon Jeon */ 1434577fb131SSeungwon Jeon err = mmc_select_bus_width(card); 14358b7be8f2SPeter Griffin if (err > 0) { 1436cc4f414cSAdrian Hunter val = EXT_CSD_TIMING_HS200 | 1437cc4f414cSAdrian Hunter card->drive_strength << EXT_CSD_DRV_STR_SHIFT; 1438577fb131SSeungwon Jeon err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1439cc4f414cSAdrian Hunter EXT_CSD_HS_TIMING, val, 1440aa33ce3cSUlf Hansson card->ext_csd.generic_cmd6_time, 0, 144108573eafSChaotian Jing true, false, true); 14421815e61bSAdrian Hunter if (err) 14431815e61bSAdrian Hunter goto err; 14441815e61bSAdrian Hunter old_timing = host->ios.timing; 1445577fb131SSeungwon Jeon mmc_set_timing(host, MMC_TIMING_MMC_HS200); 144608573eafSChaotian Jing 1447ef3d2322SAdrian Hunter /* 1448ef3d2322SAdrian Hunter * For HS200, CRC errors are not a reliable way to know the 1449ef3d2322SAdrian Hunter * switch failed. If there really is a problem, we would expect 1450ef3d2322SAdrian Hunter * tuning will fail and the result ends up the same. 1451ef3d2322SAdrian Hunter */ 1452ef3d2322SAdrian Hunter err = __mmc_switch_status(card, false); 1453ef3d2322SAdrian Hunter 14541815e61bSAdrian Hunter /* 14551815e61bSAdrian Hunter * mmc_select_timing() assumes timing has not changed if 14561815e61bSAdrian Hunter * it is a switch error. 14571815e61bSAdrian Hunter */ 14581815e61bSAdrian Hunter if (err == -EBADMSG) 14591815e61bSAdrian Hunter mmc_set_timing(host, old_timing); 14601815e61bSAdrian Hunter } 1461a4924c71SGirish K S err: 1462e51534c8SDong Aisheng if (err) { 1463e51534c8SDong Aisheng /* fall back to the old signal voltage, if fails report error */ 14644e74b6b3SUlf Hansson if (mmc_set_signal_voltage(host, old_signal_voltage)) 1465e51534c8SDong Aisheng err = -EIO; 1466e51534c8SDong Aisheng 14671815e61bSAdrian Hunter pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), 14681815e61bSAdrian Hunter __func__, err); 1469e51534c8SDong Aisheng } 1470a4924c71SGirish K S return err; 1471a4924c71SGirish K S } 1472a4924c71SGirish K S 1473a4924c71SGirish K S /* 147481ac2af6SShawn Lin * Activate High Speed, HS200 or HS400ES mode if supported. 1475577fb131SSeungwon Jeon */ 1476577fb131SSeungwon Jeon static int mmc_select_timing(struct mmc_card *card) 1477577fb131SSeungwon Jeon { 1478577fb131SSeungwon Jeon int err = 0; 1479577fb131SSeungwon Jeon 1480148bcab2SUlf Hansson if (!mmc_can_ext_csd(card)) 1481577fb131SSeungwon Jeon goto bus_speed; 1482577fb131SSeungwon Jeon 148381ac2af6SShawn Lin if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400ES) 148481ac2af6SShawn Lin err = mmc_select_hs400es(card); 148581ac2af6SShawn Lin else if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200) 1486577fb131SSeungwon Jeon err = mmc_select_hs200(card); 1487577fb131SSeungwon Jeon else if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS) 1488577fb131SSeungwon Jeon err = mmc_select_hs(card); 1489577fb131SSeungwon Jeon 1490577fb131SSeungwon Jeon if (err && err != -EBADMSG) 1491577fb131SSeungwon Jeon return err; 1492577fb131SSeungwon Jeon 1493577fb131SSeungwon Jeon bus_speed: 1494577fb131SSeungwon Jeon /* 1495577fb131SSeungwon Jeon * Set the bus speed to the selected bus timing. 1496577fb131SSeungwon Jeon * If timing is not selected, backward compatible is the default. 1497577fb131SSeungwon Jeon */ 1498577fb131SSeungwon Jeon mmc_set_bus_speed(card); 14990400ed0aSDong Aisheng return 0; 1500577fb131SSeungwon Jeon } 1501577fb131SSeungwon Jeon 1502577fb131SSeungwon Jeon /* 1503577fb131SSeungwon Jeon * Execute tuning sequence to seek the proper bus operating 15040a5b6438SSeungwon Jeon * conditions for HS200 and HS400, which sends CMD21 to the device. 1505577fb131SSeungwon Jeon */ 1506577fb131SSeungwon Jeon static int mmc_hs200_tuning(struct mmc_card *card) 1507577fb131SSeungwon Jeon { 1508577fb131SSeungwon Jeon struct mmc_host *host = card->host; 1509577fb131SSeungwon Jeon 15100a5b6438SSeungwon Jeon /* 15110a5b6438SSeungwon Jeon * Timing should be adjusted to the HS400 target 15120a5b6438SSeungwon Jeon * operation frequency for tuning process 15130a5b6438SSeungwon Jeon */ 15140a5b6438SSeungwon Jeon if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 && 15150a5b6438SSeungwon Jeon host->ios.bus_width == MMC_BUS_WIDTH_8) 15160a5b6438SSeungwon Jeon if (host->ops->prepare_hs400_tuning) 15170a5b6438SSeungwon Jeon host->ops->prepare_hs400_tuning(host, &host->ios); 15180a5b6438SSeungwon Jeon 151963e415c6SAdrian Hunter return mmc_execute_tuning(card); 1520577fb131SSeungwon Jeon } 1521577fb131SSeungwon Jeon 1522577fb131SSeungwon Jeon /* 15236abaa0c9SPierre Ossman * Handle the detection and initialisation of a card. 15246abaa0c9SPierre Ossman * 15258769392bSDeepak Saxena * In the case of a resume, "oldcard" will contain the card 15266abaa0c9SPierre Ossman * we're trying to reinitialise. 15277ea239d9SPierre Ossman */ 15288c75deaeSPierre Ossman static int mmc_init_card(struct mmc_host *host, u32 ocr, 15296abaa0c9SPierre Ossman struct mmc_card *oldcard) 15307ea239d9SPierre Ossman { 15317ea239d9SPierre Ossman struct mmc_card *card; 1532577fb131SSeungwon Jeon int err; 15337ea239d9SPierre Ossman u32 cid[4]; 1534b676f039SPhilip Rakity u32 rocr; 15357ea239d9SPierre Ossman 1536d84075c8SPierre Ossman WARN_ON(!host->claimed); 15377ea239d9SPierre Ossman 153844669034SStefan Nilsson XK /* Set correct bus mode for MMC before attempting init */ 153944669034SStefan Nilsson XK if (!mmc_host_is_spi(host)) 154044669034SStefan Nilsson XK mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); 154144669034SStefan Nilsson XK 15427ea239d9SPierre Ossman /* 15437ea239d9SPierre Ossman * Since we're changing the OCR value, we seem to 15447ea239d9SPierre Ossman * need to tell some cards to go back to the idle 15457ea239d9SPierre Ossman * state. We wait 1ms to give cards time to 15467ea239d9SPierre Ossman * respond. 1547c3805467SBalaji T K * mmc_go_idle is needed for eMMC that are asleep 15487ea239d9SPierre Ossman */ 15497ea239d9SPierre Ossman mmc_go_idle(host); 15507ea239d9SPierre Ossman 15517ea239d9SPierre Ossman /* The extra bit indicates that we support high capacity */ 1552b676f039SPhilip Rakity err = mmc_send_op_cond(host, ocr | (1 << 30), &rocr); 155317b0429dSPierre Ossman if (err) 15546abaa0c9SPierre Ossman goto err; 15557ea239d9SPierre Ossman 15567ea239d9SPierre Ossman /* 1557af517150SDavid Brownell * For SPI, enable CRC as appropriate. 1558af517150SDavid Brownell */ 1559af517150SDavid Brownell if (mmc_host_is_spi(host)) { 1560af517150SDavid Brownell err = mmc_spi_set_crc(host, use_spi_crc); 1561af517150SDavid Brownell if (err) 1562af517150SDavid Brownell goto err; 1563af517150SDavid Brownell } 1564af517150SDavid Brownell 1565af517150SDavid Brownell /* 15667ea239d9SPierre Ossman * Fetch CID from card. 15677ea239d9SPierre Ossman */ 1568af517150SDavid Brownell err = mmc_send_cid(host, cid); 156917b0429dSPierre Ossman if (err) 15707ea239d9SPierre Ossman goto err; 15717ea239d9SPierre Ossman 15726abaa0c9SPierre Ossman if (oldcard) { 1573adf66a0dSPierre Ossman if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) { 1574adf66a0dSPierre Ossman err = -ENOENT; 15756abaa0c9SPierre Ossman goto err; 1576adf66a0dSPierre Ossman } 15776abaa0c9SPierre Ossman 15786abaa0c9SPierre Ossman card = oldcard; 15796abaa0c9SPierre Ossman } else { 15807ea239d9SPierre Ossman /* 15817ea239d9SPierre Ossman * Allocate card structure. 15827ea239d9SPierre Ossman */ 158351ec92e2SPierre Ossman card = mmc_alloc_card(host, &mmc_type); 1584adf66a0dSPierre Ossman if (IS_ERR(card)) { 1585adf66a0dSPierre Ossman err = PTR_ERR(card); 15867ea239d9SPierre Ossman goto err; 1587adf66a0dSPierre Ossman } 15887ea239d9SPierre Ossman 158969041150SUlf Hansson card->ocr = ocr; 15907ea239d9SPierre Ossman card->type = MMC_TYPE_MMC; 15917ea239d9SPierre Ossman card->rca = 1; 15927ea239d9SPierre Ossman memcpy(card->raw_cid, cid, sizeof(card->raw_cid)); 15936abaa0c9SPierre Ossman } 15947ea239d9SPierre Ossman 15957ea239d9SPierre Ossman /* 1596eac86321SDoug Anderson * Call the optional HC's init_card function to handle quirks. 1597eac86321SDoug Anderson */ 1598eac86321SDoug Anderson if (host->ops->init_card) 1599eac86321SDoug Anderson host->ops->init_card(host, card); 1600eac86321SDoug Anderson 1601eac86321SDoug Anderson /* 1602af517150SDavid Brownell * For native busses: set card RCA and quit open drain mode. 16037ea239d9SPierre Ossman */ 1604af517150SDavid Brownell if (!mmc_host_is_spi(host)) { 16057ea239d9SPierre Ossman err = mmc_set_relative_addr(card); 160617b0429dSPierre Ossman if (err) 16077ea239d9SPierre Ossman goto free_card; 16087ea239d9SPierre Ossman 16097ea239d9SPierre Ossman mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL); 1610af517150SDavid Brownell } 16117ea239d9SPierre Ossman 16126abaa0c9SPierre Ossman if (!oldcard) { 16137ea239d9SPierre Ossman /* 16147ea239d9SPierre Ossman * Fetch CSD from card. 16157ea239d9SPierre Ossman */ 16167ea239d9SPierre Ossman err = mmc_send_csd(card, card->raw_csd); 161717b0429dSPierre Ossman if (err) 16187ea239d9SPierre Ossman goto free_card; 16197ea239d9SPierre Ossman 1620bd766312SPierre Ossman err = mmc_decode_csd(card); 1621adf66a0dSPierre Ossman if (err) 1622bd766312SPierre Ossman goto free_card; 1623bd766312SPierre Ossman err = mmc_decode_cid(card); 1624adf66a0dSPierre Ossman if (err) 1625bd766312SPierre Ossman goto free_card; 16266abaa0c9SPierre Ossman } 16277ea239d9SPierre Ossman 16287ea239d9SPierre Ossman /* 16293d705d14SSascha Hauer * handling only for cards supporting DSR and hosts requesting 16303d705d14SSascha Hauer * DSR configuration 16313d705d14SSascha Hauer */ 16323d705d14SSascha Hauer if (card->csd.dsr_imp && host->dsr_req) 16333d705d14SSascha Hauer mmc_set_dsr(host); 16343d705d14SSascha Hauer 16353d705d14SSascha Hauer /* 163689a73cf5SPierre Ossman * Select card, as all following commands rely on that. 16377ea239d9SPierre Ossman */ 1638af517150SDavid Brownell if (!mmc_host_is_spi(host)) { 16397ea239d9SPierre Ossman err = mmc_select_card(card); 164017b0429dSPierre Ossman if (err) 16417ea239d9SPierre Ossman goto free_card; 1642af517150SDavid Brownell } 16437ea239d9SPierre Ossman 16446abaa0c9SPierre Ossman if (!oldcard) { 1645076ec38aSUlf Hansson /* Read extended CSD. */ 1646076ec38aSUlf Hansson err = mmc_read_ext_csd(card); 164717b0429dSPierre Ossman if (err) 16487ea239d9SPierre Ossman goto free_card; 1649b676f039SPhilip Rakity 165087e88659SMasahiro Yamada /* 165187e88659SMasahiro Yamada * If doing byte addressing, check if required to do sector 1652b676f039SPhilip Rakity * addressing. Handle the case of <2GB cards needing sector 1653b676f039SPhilip Rakity * addressing. See section 8.1 JEDEC Standard JED84-A441; 1654b676f039SPhilip Rakity * ocr register has bit 30 set for sector addressing. 1655b676f039SPhilip Rakity */ 165687e88659SMasahiro Yamada if (rocr & BIT(30)) 1657b676f039SPhilip Rakity mmc_card_set_blockaddr(card); 1658b676f039SPhilip Rakity 1659dfe86cbaSAdrian Hunter /* Erase size depends on CSD and Extended CSD */ 1660dfe86cbaSAdrian Hunter mmc_set_erase_size(card); 16616abaa0c9SPierre Ossman } 16627ea239d9SPierre Ossman 1663d2a47176SUlf Hansson /* Enable ERASE_GRP_DEF. This bit is lost after a reset or power off. */ 1664d2a47176SUlf Hansson if (card->ext_csd.rev >= 3) { 1665709de99dSChuanxiao Dong err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1666b23cf0bdSSeungwon Jeon EXT_CSD_ERASE_GROUP_DEF, 1, 1667b23cf0bdSSeungwon Jeon card->ext_csd.generic_cmd6_time); 1668709de99dSChuanxiao Dong 1669709de99dSChuanxiao Dong if (err && err != -EBADMSG) 1670709de99dSChuanxiao Dong goto free_card; 1671709de99dSChuanxiao Dong 1672709de99dSChuanxiao Dong if (err) { 1673709de99dSChuanxiao Dong err = 0; 1674709de99dSChuanxiao Dong /* 1675709de99dSChuanxiao Dong * Just disable enhanced area off & sz 1676709de99dSChuanxiao Dong * will try to enable ERASE_GROUP_DEF 1677709de99dSChuanxiao Dong * during next time reinit 1678709de99dSChuanxiao Dong */ 1679709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset = -EINVAL; 1680709de99dSChuanxiao Dong card->ext_csd.enhanced_area_size = -EINVAL; 1681709de99dSChuanxiao Dong } else { 1682709de99dSChuanxiao Dong card->ext_csd.erase_group_def = 1; 1683709de99dSChuanxiao Dong /* 1684709de99dSChuanxiao Dong * enable ERASE_GRP_DEF successfully. 1685709de99dSChuanxiao Dong * This will affect the erase size, so 1686709de99dSChuanxiao Dong * here need to reset erase size 1687709de99dSChuanxiao Dong */ 1688709de99dSChuanxiao Dong mmc_set_erase_size(card); 1689709de99dSChuanxiao Dong } 1690709de99dSChuanxiao Dong } 1691709de99dSChuanxiao Dong 1692709de99dSChuanxiao Dong /* 169341e2a489SPhilip Rakity * Ensure eMMC user default partition is enabled 169441e2a489SPhilip Rakity */ 1695371a689fSAndrei Warkentin if (card->ext_csd.part_config & EXT_CSD_PART_CONFIG_ACC_MASK) { 1696371a689fSAndrei Warkentin card->ext_csd.part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK; 1697371a689fSAndrei Warkentin err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONFIG, 1698371a689fSAndrei Warkentin card->ext_csd.part_config, 1699371a689fSAndrei Warkentin card->ext_csd.part_time); 1700371a689fSAndrei Warkentin if (err && err != -EBADMSG) 1701371a689fSAndrei Warkentin goto free_card; 170241e2a489SPhilip Rakity } 170341e2a489SPhilip Rakity 170441e2a489SPhilip Rakity /* 170543235679SUlf Hansson * Enable power_off_notification byte in the ext_csd register 1706bec8726aSGirish K S */ 170743235679SUlf Hansson if (card->ext_csd.rev >= 6) { 1708bec8726aSGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1709bec8726aSGirish K S EXT_CSD_POWER_OFF_NOTIFICATION, 1710bec8726aSGirish K S EXT_CSD_POWER_ON, 1711bec8726aSGirish K S card->ext_csd.generic_cmd6_time); 1712bec8726aSGirish K S if (err && err != -EBADMSG) 1713bec8726aSGirish K S goto free_card; 1714bec8726aSGirish K S 171596a85d54SGirish K S /* 171696a85d54SGirish K S * The err can be -EBADMSG or 0, 171796a85d54SGirish K S * so check for success and update the flag 171896a85d54SGirish K S */ 1719bec8726aSGirish K S if (!err) 1720e6c08586SUlf Hansson card->ext_csd.power_off_notification = EXT_CSD_POWER_ON; 172196a85d54SGirish K S } 1722bec8726aSGirish K S 1723bec8726aSGirish K S /* 1724577fb131SSeungwon Jeon * Select timing interface 172589a73cf5SPierre Ossman */ 1726577fb131SSeungwon Jeon err = mmc_select_timing(card); 1727577fb131SSeungwon Jeon if (err) 172889a73cf5SPierre Ossman goto free_card; 172989a73cf5SPierre Ossman 1730a4924c71SGirish K S if (mmc_card_hs200(card)) { 1731577fb131SSeungwon Jeon err = mmc_hs200_tuning(card); 17324c4cb171SPhilip Rakity if (err) 17334b75bffcSAndrew Gabbasov goto free_card; 17340a5b6438SSeungwon Jeon 17350a5b6438SSeungwon Jeon err = mmc_select_hs400(card); 17360a5b6438SSeungwon Jeon if (err) 17374b75bffcSAndrew Gabbasov goto free_card; 1738773dc118SGuenter Roeck } else if (!mmc_card_hs400es(card)) { 1739577fb131SSeungwon Jeon /* Select the desired bus width optionally */ 1740577fb131SSeungwon Jeon err = mmc_select_bus_width(card); 17413d4ef329SAnssi Hannula if (err > 0 && mmc_card_hs(card)) { 1742577fb131SSeungwon Jeon err = mmc_select_hs_ddr(card); 1743577fb131SSeungwon Jeon if (err) 17444b75bffcSAndrew Gabbasov goto free_card; 174589a73cf5SPierre Ossman } 1746ef0b27d4SAdrian Hunter } 174789a73cf5SPierre Ossman 1748881d1c25SSeungwon Jeon /* 17492385049dSSeungwon Jeon * Choose the power class with selected bus interface 17502385049dSSeungwon Jeon */ 17512385049dSSeungwon Jeon mmc_select_powerclass(card); 17522385049dSSeungwon Jeon 17532385049dSSeungwon Jeon /* 175452d0974eSSubhash Jadavani * Enable HPI feature (if supported) 175552d0974eSSubhash Jadavani */ 175652d0974eSSubhash Jadavani if (card->ext_csd.hpi) { 175752d0974eSSubhash Jadavani err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 175852d0974eSSubhash Jadavani EXT_CSD_HPI_MGMT, 1, 175952d0974eSSubhash Jadavani card->ext_csd.generic_cmd6_time); 176052d0974eSSubhash Jadavani if (err && err != -EBADMSG) 176152d0974eSSubhash Jadavani goto free_card; 176252d0974eSSubhash Jadavani if (err) { 17636606110dSJoe Perches pr_warn("%s: Enabling HPI failed\n", 176452d0974eSSubhash Jadavani mmc_hostname(card->host)); 176552d0974eSSubhash Jadavani err = 0; 176652d0974eSSubhash Jadavani } else 176752d0974eSSubhash Jadavani card->ext_csd.hpi_en = 1; 176852d0974eSSubhash Jadavani } 176952d0974eSSubhash Jadavani 177052d0974eSSubhash Jadavani /* 1771881d1c25SSeungwon Jeon * If cache size is higher than 0, this indicates 1772881d1c25SSeungwon Jeon * the existence of cache and it can be turned on. 1773881d1c25SSeungwon Jeon */ 17745320226aSPratibhasagar V if (!mmc_card_broken_hpi(card) && 17755320226aSPratibhasagar V card->ext_csd.cache_size > 0) { 1776881d1c25SSeungwon Jeon err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 17778bc0678bSSeungwon Jeon EXT_CSD_CACHE_CTRL, 1, 17788bc0678bSSeungwon Jeon card->ext_csd.generic_cmd6_time); 1779881d1c25SSeungwon Jeon if (err && err != -EBADMSG) 1780881d1c25SSeungwon Jeon goto free_card; 1781881d1c25SSeungwon Jeon 1782881d1c25SSeungwon Jeon /* 1783881d1c25SSeungwon Jeon * Only if no error, cache is turned on successfully. 1784881d1c25SSeungwon Jeon */ 17858bc0678bSSeungwon Jeon if (err) { 17866606110dSJoe Perches pr_warn("%s: Cache is supported, but failed to turn on (%d)\n", 17878bc0678bSSeungwon Jeon mmc_hostname(card->host), err); 17888bc0678bSSeungwon Jeon card->ext_csd.cache_ctrl = 0; 17898bc0678bSSeungwon Jeon err = 0; 17908bc0678bSSeungwon Jeon } else { 17918bc0678bSSeungwon Jeon card->ext_csd.cache_ctrl = 1; 17928bc0678bSSeungwon Jeon } 1793881d1c25SSeungwon Jeon } 1794881d1c25SSeungwon Jeon 1795abd9ac14SSeungwon Jeon /* 179698d4f780SAdrian Hunter * Enable Command Queue if supported. Note that Packed Commands cannot 179798d4f780SAdrian Hunter * be used with Command Queue. 179898d4f780SAdrian Hunter */ 179998d4f780SAdrian Hunter card->ext_csd.cmdq_en = false; 180098d4f780SAdrian Hunter if (card->ext_csd.cmdq_support && host->caps2 & MMC_CAP2_CQE) { 180198d4f780SAdrian Hunter err = mmc_cmdq_enable(card); 180298d4f780SAdrian Hunter if (err && err != -EBADMSG) 180398d4f780SAdrian Hunter goto free_card; 180498d4f780SAdrian Hunter if (err) { 180598d4f780SAdrian Hunter pr_warn("%s: Enabling CMDQ failed\n", 180698d4f780SAdrian Hunter mmc_hostname(card->host)); 180798d4f780SAdrian Hunter card->ext_csd.cmdq_support = false; 180898d4f780SAdrian Hunter card->ext_csd.cmdq_depth = 0; 180998d4f780SAdrian Hunter err = 0; 181098d4f780SAdrian Hunter } 181198d4f780SAdrian Hunter } 181298d4f780SAdrian Hunter /* 18139d4579a8SAdrian Hunter * In some cases (e.g. RPMB or mmc_test), the Command Queue must be 18149d4579a8SAdrian Hunter * disabled for a time, so a flag is needed to indicate to re-enable the 18159d4579a8SAdrian Hunter * Command Queue. 18169d4579a8SAdrian Hunter */ 18179d4579a8SAdrian Hunter card->reenable_cmdq = card->ext_csd.cmdq_en; 18189d4579a8SAdrian Hunter 1819f690f440SAdrian Hunter if (card->ext_csd.cmdq_en && !host->cqe_enabled) { 1820f690f440SAdrian Hunter err = host->cqe_ops->cqe_enable(host, card); 1821f690f440SAdrian Hunter if (err) { 1822f690f440SAdrian Hunter pr_err("%s: Failed to enable CQE, error %d\n", 1823f690f440SAdrian Hunter mmc_hostname(host), err); 1824f690f440SAdrian Hunter } else { 1825f690f440SAdrian Hunter host->cqe_enabled = true; 1826f690f440SAdrian Hunter pr_info("%s: Command Queue Engine enabled\n", 1827f690f440SAdrian Hunter mmc_hostname(host)); 1828f690f440SAdrian Hunter } 1829f690f440SAdrian Hunter } 1830f690f440SAdrian Hunter 18316abaa0c9SPierre Ossman if (!oldcard) 18327ea239d9SPierre Ossman host->card = card; 18337ea239d9SPierre Ossman 183417b0429dSPierre Ossman return 0; 18356abaa0c9SPierre Ossman 18366abaa0c9SPierre Ossman free_card: 18376abaa0c9SPierre Ossman if (!oldcard) 18386abaa0c9SPierre Ossman mmc_remove_card(card); 18396abaa0c9SPierre Ossman err: 1840adf66a0dSPierre Ossman return err; 18416abaa0c9SPierre Ossman } 18426abaa0c9SPierre Ossman 184307a68216SUlf Hansson static int mmc_can_sleep(struct mmc_card *card) 184407a68216SUlf Hansson { 184507a68216SUlf Hansson return (card && card->ext_csd.rev >= 3); 184607a68216SUlf Hansson } 184707a68216SUlf Hansson 184807a68216SUlf Hansson static int mmc_sleep(struct mmc_host *host) 184907a68216SUlf Hansson { 1850c7836d15SMasahiro Yamada struct mmc_command cmd = {}; 185107a68216SUlf Hansson struct mmc_card *card = host->card; 1852cb962e04SUlf Hansson unsigned int timeout_ms = DIV_ROUND_UP(card->ext_csd.sa_timeout, 10000); 185307a68216SUlf Hansson int err; 185407a68216SUlf Hansson 1855436f8daaSAdrian Hunter /* Re-tuning can't be done once the card is deselected */ 1856436f8daaSAdrian Hunter mmc_retune_hold(host); 1857436f8daaSAdrian Hunter 185807a68216SUlf Hansson err = mmc_deselect_cards(host); 185907a68216SUlf Hansson if (err) 1860436f8daaSAdrian Hunter goto out_release; 186107a68216SUlf Hansson 186207a68216SUlf Hansson cmd.opcode = MMC_SLEEP_AWAKE; 186307a68216SUlf Hansson cmd.arg = card->rca << 16; 186407a68216SUlf Hansson cmd.arg |= 1 << 15; 186507a68216SUlf Hansson 1866cb962e04SUlf Hansson /* 1867cb962e04SUlf Hansson * If the max_busy_timeout of the host is specified, validate it against 1868cb962e04SUlf Hansson * the sleep cmd timeout. A failure means we need to prevent the host 1869cb962e04SUlf Hansson * from doing hw busy detection, which is done by converting to a R1 1870cb962e04SUlf Hansson * response instead of a R1B. 1871cb962e04SUlf Hansson */ 1872cb962e04SUlf Hansson if (host->max_busy_timeout && (timeout_ms > host->max_busy_timeout)) { 1873cb962e04SUlf Hansson cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; 1874cb962e04SUlf Hansson } else { 187507a68216SUlf Hansson cmd.flags = MMC_RSP_R1B | MMC_CMD_AC; 1876cb962e04SUlf Hansson cmd.busy_timeout = timeout_ms; 1877cb962e04SUlf Hansson } 1878cb962e04SUlf Hansson 187907a68216SUlf Hansson err = mmc_wait_for_cmd(host, &cmd, 0); 188007a68216SUlf Hansson if (err) 1881436f8daaSAdrian Hunter goto out_release; 188207a68216SUlf Hansson 188307a68216SUlf Hansson /* 188407a68216SUlf Hansson * If the host does not wait while the card signals busy, then we will 188507a68216SUlf Hansson * will have to wait the sleep/awake timeout. Note, we cannot use the 188607a68216SUlf Hansson * SEND_STATUS command to poll the status because that command (and most 188707a68216SUlf Hansson * others) is invalid while the card sleeps. 188807a68216SUlf Hansson */ 1889cb962e04SUlf Hansson if (!cmd.busy_timeout || !(host->caps & MMC_CAP_WAIT_WHILE_BUSY)) 1890cb962e04SUlf Hansson mmc_delay(timeout_ms); 189107a68216SUlf Hansson 1892436f8daaSAdrian Hunter out_release: 1893436f8daaSAdrian Hunter mmc_retune_release(host); 189407a68216SUlf Hansson return err; 189507a68216SUlf Hansson } 189607a68216SUlf Hansson 1897e6c08586SUlf Hansson static int mmc_can_poweroff_notify(const struct mmc_card *card) 1898e6c08586SUlf Hansson { 1899e6c08586SUlf Hansson return card && 1900e6c08586SUlf Hansson mmc_card_mmc(card) && 1901e6c08586SUlf Hansson (card->ext_csd.power_off_notification == EXT_CSD_POWER_ON); 1902e6c08586SUlf Hansson } 1903e6c08586SUlf Hansson 1904e6c08586SUlf Hansson static int mmc_poweroff_notify(struct mmc_card *card, unsigned int notify_type) 1905e6c08586SUlf Hansson { 1906e6c08586SUlf Hansson unsigned int timeout = card->ext_csd.generic_cmd6_time; 1907e6c08586SUlf Hansson int err; 1908e6c08586SUlf Hansson 1909e6c08586SUlf Hansson /* Use EXT_CSD_POWER_OFF_SHORT as default notification type. */ 1910e6c08586SUlf Hansson if (notify_type == EXT_CSD_POWER_OFF_LONG) 1911e6c08586SUlf Hansson timeout = card->ext_csd.power_off_longtime; 1912e6c08586SUlf Hansson 1913878e200bSUlf Hansson err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1914e6c08586SUlf Hansson EXT_CSD_POWER_OFF_NOTIFICATION, 1915aa33ce3cSUlf Hansson notify_type, timeout, 0, true, false, false); 1916e6c08586SUlf Hansson if (err) 1917e6c08586SUlf Hansson pr_err("%s: Power Off Notification timed out, %u\n", 1918e6c08586SUlf Hansson mmc_hostname(card->host), timeout); 1919e6c08586SUlf Hansson 1920e6c08586SUlf Hansson /* Disable the power off notification after the switch operation. */ 1921e6c08586SUlf Hansson card->ext_csd.power_off_notification = EXT_CSD_NO_POWER_NOTIFICATION; 1922e6c08586SUlf Hansson 1923e6c08586SUlf Hansson return err; 1924e6c08586SUlf Hansson } 1925e6c08586SUlf Hansson 19266abaa0c9SPierre Ossman /* 19276abaa0c9SPierre Ossman * Host is being removed. Free up the current card. 19286abaa0c9SPierre Ossman */ 19296abaa0c9SPierre Ossman static void mmc_remove(struct mmc_host *host) 19306abaa0c9SPierre Ossman { 19316abaa0c9SPierre Ossman mmc_remove_card(host->card); 19326abaa0c9SPierre Ossman host->card = NULL; 19336abaa0c9SPierre Ossman } 19346abaa0c9SPierre Ossman 19356abaa0c9SPierre Ossman /* 1936d3049504SAdrian Hunter * Card detection - card is alive. 1937d3049504SAdrian Hunter */ 1938d3049504SAdrian Hunter static int mmc_alive(struct mmc_host *host) 1939d3049504SAdrian Hunter { 1940d3049504SAdrian Hunter return mmc_send_status(host->card, NULL); 1941d3049504SAdrian Hunter } 1942d3049504SAdrian Hunter 1943d3049504SAdrian Hunter /* 19446abaa0c9SPierre Ossman * Card detection callback from host. 19456abaa0c9SPierre Ossman */ 19466abaa0c9SPierre Ossman static void mmc_detect(struct mmc_host *host) 19476abaa0c9SPierre Ossman { 19486abaa0c9SPierre Ossman int err; 19496abaa0c9SPierre Ossman 19506c0cedd1SAdrian Hunter mmc_get_card(host->card, NULL); 19516abaa0c9SPierre Ossman 19526abaa0c9SPierre Ossman /* 19536abaa0c9SPierre Ossman * Just check if our card has been removed. 19546abaa0c9SPierre Ossman */ 1955d3049504SAdrian Hunter err = _mmc_detect_card_removed(host); 19566abaa0c9SPierre Ossman 19576c0cedd1SAdrian Hunter mmc_put_card(host->card, NULL); 19587ea239d9SPierre Ossman 195917b0429dSPierre Ossman if (err) { 19604101c16aSPierre Ossman mmc_remove(host); 19616abaa0c9SPierre Ossman 19626abaa0c9SPierre Ossman mmc_claim_host(host); 19636abaa0c9SPierre Ossman mmc_detach_bus(host); 19647f7e4129SUlf Hansson mmc_power_off(host); 19656abaa0c9SPierre Ossman mmc_release_host(host); 19666abaa0c9SPierre Ossman } 19676abaa0c9SPierre Ossman } 19686abaa0c9SPierre Ossman 196903d071fcSUlf Hansson static int _mmc_suspend(struct mmc_host *host, bool is_suspend) 19706abaa0c9SPierre Ossman { 1971c3805467SBalaji T K int err = 0; 197203d071fcSUlf Hansson unsigned int notify_type = is_suspend ? EXT_CSD_POWER_OFF_SHORT : 197303d071fcSUlf Hansson EXT_CSD_POWER_OFF_LONG; 1974c3805467SBalaji T K 19756abaa0c9SPierre Ossman mmc_claim_host(host); 1976881d926dSMaya Erez 19779ec775f7SUlf Hansson if (mmc_card_suspended(host->card)) 19789ec775f7SUlf Hansson goto out; 19799ec775f7SUlf Hansson 198039b9431bSUlf Hansson if (mmc_card_doing_bkops(host->card)) { 198139b9431bSUlf Hansson err = mmc_stop_bkops(host->card); 198239b9431bSUlf Hansson if (err) 198339b9431bSUlf Hansson goto out; 198439b9431bSUlf Hansson } 198539b9431bSUlf Hansson 198610e5d965SUlf Hansson err = mmc_flush_cache(host->card); 1987881d926dSMaya Erez if (err) 1988881d926dSMaya Erez goto out; 1989881d926dSMaya Erez 199043235679SUlf Hansson if (mmc_can_poweroff_notify(host->card) && 199153275c21SUlf Hansson ((host->caps2 & MMC_CAP2_FULL_PWR_CYCLE) || !is_suspend)) 199203d071fcSUlf Hansson err = mmc_poweroff_notify(host->card, notify_type); 199307a68216SUlf Hansson else if (mmc_can_sleep(host->card)) 199407a68216SUlf Hansson err = mmc_sleep(host); 1995e6c08586SUlf Hansson else if (!mmc_host_is_spi(host)) 199685e727edSJaehoon Chung err = mmc_deselect_cards(host); 199795cdfb72SNicolas Pitre 19989ec775f7SUlf Hansson if (!err) { 199974590263SUlf Hansson mmc_power_off(host); 20009ec775f7SUlf Hansson mmc_card_set_suspended(host->card); 20019ec775f7SUlf Hansson } 2002881d926dSMaya Erez out: 2003881d926dSMaya Erez mmc_release_host(host); 2004c3805467SBalaji T K return err; 20056abaa0c9SPierre Ossman } 20066abaa0c9SPierre Ossman 20076abaa0c9SPierre Ossman /* 20080cb403a2SUlf Hansson * Suspend callback 200903d071fcSUlf Hansson */ 201003d071fcSUlf Hansson static int mmc_suspend(struct mmc_host *host) 201103d071fcSUlf Hansson { 20120cb403a2SUlf Hansson int err; 20130cb403a2SUlf Hansson 20140cb403a2SUlf Hansson err = _mmc_suspend(host, true); 20150cb403a2SUlf Hansson if (!err) { 20160cb403a2SUlf Hansson pm_runtime_disable(&host->card->dev); 20170cb403a2SUlf Hansson pm_runtime_set_suspended(&host->card->dev); 20180cb403a2SUlf Hansson } 20190cb403a2SUlf Hansson 20200cb403a2SUlf Hansson return err; 202103d071fcSUlf Hansson } 202203d071fcSUlf Hansson 202303d071fcSUlf Hansson /* 20246abaa0c9SPierre Ossman * This function tries to determine if the same card is still present 20256abaa0c9SPierre Ossman * and, if so, restore all state to it. 20266abaa0c9SPierre Ossman */ 20270cb403a2SUlf Hansson static int _mmc_resume(struct mmc_host *host) 20286abaa0c9SPierre Ossman { 20299ec775f7SUlf Hansson int err = 0; 20306abaa0c9SPierre Ossman 20316abaa0c9SPierre Ossman mmc_claim_host(host); 20329ec775f7SUlf Hansson 20339ec775f7SUlf Hansson if (!mmc_card_suspended(host->card)) 20349ec775f7SUlf Hansson goto out; 20359ec775f7SUlf Hansson 203669041150SUlf Hansson mmc_power_up(host, host->card->ocr); 203769041150SUlf Hansson err = mmc_init_card(host, host->card->ocr, host->card); 20389ec775f7SUlf Hansson mmc_card_clr_suspended(host->card); 20392986d0bfSPierre Ossman 20409ec775f7SUlf Hansson out: 20419ec775f7SUlf Hansson mmc_release_host(host); 204295cdfb72SNicolas Pitre return err; 20436abaa0c9SPierre Ossman } 20446abaa0c9SPierre Ossman 20459ec775f7SUlf Hansson /* 20469ec775f7SUlf Hansson * Shutdown callback 20479ec775f7SUlf Hansson */ 20489ec775f7SUlf Hansson static int mmc_shutdown(struct mmc_host *host) 20499ec775f7SUlf Hansson { 20509ec775f7SUlf Hansson int err = 0; 20519ec775f7SUlf Hansson 20529ec775f7SUlf Hansson /* 20539ec775f7SUlf Hansson * In a specific case for poweroff notify, we need to resume the card 20549ec775f7SUlf Hansson * before we can shutdown it properly. 20559ec775f7SUlf Hansson */ 20569ec775f7SUlf Hansson if (mmc_can_poweroff_notify(host->card) && 20579ec775f7SUlf Hansson !(host->caps2 & MMC_CAP2_FULL_PWR_CYCLE)) 20580cb403a2SUlf Hansson err = _mmc_resume(host); 20599ec775f7SUlf Hansson 20609ec775f7SUlf Hansson if (!err) 20619ec775f7SUlf Hansson err = _mmc_suspend(host, false); 20629ec775f7SUlf Hansson 20639ec775f7SUlf Hansson return err; 20649ec775f7SUlf Hansson } 2065c4d770d7SUlf Hansson 2066c4d770d7SUlf Hansson /* 20670cb403a2SUlf Hansson * Callback for resume. 20680cb403a2SUlf Hansson */ 20690cb403a2SUlf Hansson static int mmc_resume(struct mmc_host *host) 20700cb403a2SUlf Hansson { 20710cb403a2SUlf Hansson pm_runtime_enable(&host->card->dev); 2072c29536e8SUlf Hansson return 0; 20730cb403a2SUlf Hansson } 20740cb403a2SUlf Hansson 20750cb403a2SUlf Hansson /* 2076c4d770d7SUlf Hansson * Callback for runtime_suspend. 2077c4d770d7SUlf Hansson */ 2078c4d770d7SUlf Hansson static int mmc_runtime_suspend(struct mmc_host *host) 2079c4d770d7SUlf Hansson { 2080c4d770d7SUlf Hansson int err; 2081c4d770d7SUlf Hansson 2082c4d770d7SUlf Hansson if (!(host->caps & MMC_CAP_AGGRESSIVE_PM)) 2083c4d770d7SUlf Hansson return 0; 2084c4d770d7SUlf Hansson 20850cb403a2SUlf Hansson err = _mmc_suspend(host, true); 20860cc81a8cSUlf Hansson if (err) 2087f42cf8d6SMasanari Iida pr_err("%s: error %d doing aggressive suspend\n", 2088c4d770d7SUlf Hansson mmc_hostname(host), err); 2089c4d770d7SUlf Hansson 2090c4d770d7SUlf Hansson return err; 2091c4d770d7SUlf Hansson } 2092c4d770d7SUlf Hansson 2093c4d770d7SUlf Hansson /* 2094c4d770d7SUlf Hansson * Callback for runtime_resume. 2095c4d770d7SUlf Hansson */ 2096c4d770d7SUlf Hansson static int mmc_runtime_resume(struct mmc_host *host) 2097c4d770d7SUlf Hansson { 2098c4d770d7SUlf Hansson int err; 2099c4d770d7SUlf Hansson 21000cb403a2SUlf Hansson err = _mmc_resume(host); 2101520322d9SAdrian Hunter if (err && err != -ENOMEDIUM) 2102c29536e8SUlf Hansson pr_err("%s: error %d doing runtime resume\n", 2103c4d770d7SUlf Hansson mmc_hostname(host), err); 2104c4d770d7SUlf Hansson 2105c4d770d7SUlf Hansson return 0; 2106c4d770d7SUlf Hansson } 2107c4d770d7SUlf Hansson 210888bed3a6SUlf Hansson static int mmc_can_reset(struct mmc_card *card) 2109f855a371SJohan Rudholm { 2110f855a371SJohan Rudholm u8 rst_n_function; 2111f855a371SJohan Rudholm 2112f855a371SJohan Rudholm rst_n_function = card->ext_csd.rst_n_function; 2113f855a371SJohan Rudholm if ((rst_n_function & EXT_CSD_RST_N_EN_MASK) != EXT_CSD_RST_N_ENABLED) 2114f855a371SJohan Rudholm return 0; 2115f855a371SJohan Rudholm return 1; 2116f855a371SJohan Rudholm } 2117f855a371SJohan Rudholm 2118f855a371SJohan Rudholm static int mmc_reset(struct mmc_host *host) 2119f855a371SJohan Rudholm { 2120f855a371SJohan Rudholm struct mmc_card *card = host->card; 2121f855a371SJohan Rudholm 2122437db4c6SAdrian Hunter /* 2123437db4c6SAdrian Hunter * In the case of recovery, we can't expect flushing the cache to work 2124437db4c6SAdrian Hunter * always, but we have a go and ignore errors. 2125437db4c6SAdrian Hunter */ 2126437db4c6SAdrian Hunter mmc_flush_cache(host->card); 2127437db4c6SAdrian Hunter 21284e6c7178SGwendal Grignou if ((host->caps & MMC_CAP_HW_RESET) && host->ops->hw_reset && 21294e6c7178SGwendal Grignou mmc_can_reset(card)) { 21304e6c7178SGwendal Grignou /* If the card accept RST_n signal, send it. */ 2131f855a371SJohan Rudholm mmc_set_clock(host, host->f_init); 2132f855a371SJohan Rudholm host->ops->hw_reset(host); 2133f855a371SJohan Rudholm /* Set initial state and call mmc_set_ios */ 2134f855a371SJohan Rudholm mmc_set_initial_state(host); 21354e6c7178SGwendal Grignou } else { 21364e6c7178SGwendal Grignou /* Do a brute force power cycle */ 21374e6c7178SGwendal Grignou mmc_power_cycle(host, card->ocr); 213852c8212dSUlf Hansson mmc_pwrseq_reset(host); 21394e6c7178SGwendal Grignou } 2140364549ddSUlf Hansson return mmc_init_card(host, card->ocr, card); 2141f855a371SJohan Rudholm } 2142f855a371SJohan Rudholm 21439feae246SAdrian Hunter static const struct mmc_bus_ops mmc_ops = { 21449feae246SAdrian Hunter .remove = mmc_remove, 21459feae246SAdrian Hunter .detect = mmc_detect, 21469feae246SAdrian Hunter .suspend = mmc_suspend, 21479feae246SAdrian Hunter .resume = mmc_resume, 2148c4d770d7SUlf Hansson .runtime_suspend = mmc_runtime_suspend, 2149c4d770d7SUlf Hansson .runtime_resume = mmc_runtime_resume, 2150d3049504SAdrian Hunter .alive = mmc_alive, 2151486fdbbcSUlf Hansson .shutdown = mmc_shutdown, 2152f855a371SJohan Rudholm .reset = mmc_reset, 21539feae246SAdrian Hunter }; 21549feae246SAdrian Hunter 21556abaa0c9SPierre Ossman /* 21566abaa0c9SPierre Ossman * Starting point for MMC card init. 21576abaa0c9SPierre Ossman */ 2158807e8e40SAndy Ross int mmc_attach_mmc(struct mmc_host *host) 21596abaa0c9SPierre Ossman { 21606abaa0c9SPierre Ossman int err; 216169041150SUlf Hansson u32 ocr, rocr; 21626abaa0c9SPierre Ossman 2163d84075c8SPierre Ossman WARN_ON(!host->claimed); 21646abaa0c9SPierre Ossman 216544669034SStefan Nilsson XK /* Set correct bus mode for MMC before attempting attach */ 216644669034SStefan Nilsson XK if (!mmc_host_is_spi(host)) 216744669034SStefan Nilsson XK mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); 216844669034SStefan Nilsson XK 2169807e8e40SAndy Ross err = mmc_send_op_cond(host, 0, &ocr); 2170807e8e40SAndy Ross if (err) 2171807e8e40SAndy Ross return err; 2172807e8e40SAndy Ross 21732501c917SUlf Hansson mmc_attach_bus(host, &mmc_ops); 21748f230f45STakashi Iwai if (host->ocr_avail_mmc) 21758f230f45STakashi Iwai host->ocr_avail = host->ocr_avail_mmc; 21766abaa0c9SPierre Ossman 21776abaa0c9SPierre Ossman /* 2178af517150SDavid Brownell * We need to get OCR a different way for SPI. 2179af517150SDavid Brownell */ 2180af517150SDavid Brownell if (mmc_host_is_spi(host)) { 2181af517150SDavid Brownell err = mmc_spi_read_ocr(host, 1, &ocr); 2182af517150SDavid Brownell if (err) 2183af517150SDavid Brownell goto err; 2184af517150SDavid Brownell } 2185af517150SDavid Brownell 218669041150SUlf Hansson rocr = mmc_select_voltage(host, ocr); 21876abaa0c9SPierre Ossman 21886abaa0c9SPierre Ossman /* 21896abaa0c9SPierre Ossman * Can we support the voltage of the card? 21906abaa0c9SPierre Ossman */ 219169041150SUlf Hansson if (!rocr) { 2192109b5bedSPierre Ossman err = -EINVAL; 21936abaa0c9SPierre Ossman goto err; 2194109b5bedSPierre Ossman } 21956abaa0c9SPierre Ossman 21966abaa0c9SPierre Ossman /* 21976abaa0c9SPierre Ossman * Detect and init the card. 21986abaa0c9SPierre Ossman */ 219969041150SUlf Hansson err = mmc_init_card(host, rocr, NULL); 220017b0429dSPierre Ossman if (err) 22016abaa0c9SPierre Ossman goto err; 22026abaa0c9SPierre Ossman 22036abaa0c9SPierre Ossman mmc_release_host(host); 22044101c16aSPierre Ossman err = mmc_add_card(host->card); 22057ea239d9SPierre Ossman if (err) 22062986d0bfSPierre Ossman goto remove_card; 22077ea239d9SPierre Ossman 22082860d060SSergei Shtylyov mmc_claim_host(host); 22097ea239d9SPierre Ossman return 0; 22107ea239d9SPierre Ossman 22112986d0bfSPierre Ossman remove_card: 22126abaa0c9SPierre Ossman mmc_remove_card(host->card); 22132986d0bfSPierre Ossman mmc_claim_host(host); 2214807e8e40SAndy Ross host->card = NULL; 22157ea239d9SPierre Ossman err: 22167ea239d9SPierre Ossman mmc_detach_bus(host); 22177ea239d9SPierre Ossman 2218a3c76eb9SGirish K S pr_err("%s: error %d whilst initialising MMC card\n", 2219109b5bedSPierre Ossman mmc_hostname(host), err); 2220109b5bedSPierre Ossman 2221adf66a0dSPierre Ossman return err; 22227ea239d9SPierre Ossman } 2223