1d2912cb1SThomas Gleixner // SPDX-License-Identifier: GPL-2.0-only 27ea239d9SPierre Ossman /* 370f10482SPierre Ossman * linux/drivers/mmc/core/mmc.c 47ea239d9SPierre Ossman * 57ea239d9SPierre Ossman * Copyright (C) 2003-2004 Russell King, All Rights Reserved. 67ea239d9SPierre Ossman * Copyright (C) 2005-2007 Pierre Ossman, All Rights Reserved. 77ea239d9SPierre Ossman * MMCv4 support Copyright (C) 2006 Philip Langdale, All Rights Reserved. 87ea239d9SPierre Ossman */ 97ea239d9SPierre Ossman 107ea239d9SPierre Ossman #include <linux/err.h> 1181f8a7beSHans de Goede #include <linux/of.h> 125a0e3ad6STejun Heo #include <linux/slab.h> 130205a904SPaul Gortmaker #include <linux/stat.h> 140cb403a2SUlf Hansson #include <linux/pm_runtime.h> 15f5d8a5feSSergey Shtylyov #include <linux/sysfs.h> 167ea239d9SPierre Ossman 177ea239d9SPierre Ossman #include <linux/mmc/host.h> 187ea239d9SPierre Ossman #include <linux/mmc/card.h> 197ea239d9SPierre Ossman #include <linux/mmc/mmc.h> 207ea239d9SPierre Ossman 217ea239d9SPierre Ossman #include "core.h" 224facdde1SUlf Hansson #include "card.h" 23436f8daaSAdrian Hunter #include "host.h" 244101c16aSPierre Ossman #include "bus.h" 257ea239d9SPierre Ossman #include "mmc_ops.h" 2628fc64afSShawn Lin #include "quirks.h" 274c4cb171SPhilip Rakity #include "sd_ops.h" 2852c8212dSUlf Hansson #include "pwrseq.h" 297ea239d9SPierre Ossman 30fe1b5700SUlf Hansson #define DEFAULT_CMD6_TIMEOUT_MS 500 31e3ae3401SUlf Hansson #define MIN_CACHE_EN_TIMEOUT_MS 1600 328ae11edeSUlf Hansson #define CACHE_FLUSH_TIMEOUT_MS 30000 /* 30s */ 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 302f3d7c229SBradley Bolen static void mmc_part_add(struct mmc_card *card, u64 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; 318f3d7c229SBradley Bolen u64 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]; 348f3d7c229SBradley Bolen part_size *= (hc_erase_grp_sz * hc_wp_grp_sz); 349b4493eeaSGrégory Soutadé mmc_part_add(card, part_size << 19, 350b4493eeaSGrégory Soutadé EXT_CSD_PART_CONFIG_ACC_GP0 + idx, 351b4493eeaSGrégory Soutadé "gp%d", idx, false, 352b4493eeaSGrégory Soutadé MMC_BLK_DATA_AREA_GP); 353b4493eeaSGrégory Soutadé } 354b4493eeaSGrégory Soutadé } 355b4493eeaSGrégory Soutadé } 356b4493eeaSGrégory Soutadé 3571c447116SAdrian Hunter /* Minimum partition switch timeout in milliseconds */ 3581c447116SAdrian Hunter #define MMC_MIN_PART_SWITCH_TIME 300 3591c447116SAdrian Hunter 36008ee80ccSPhilip Rakity /* 36108ee80ccSPhilip Rakity * Decode extended CSD. 36208ee80ccSPhilip Rakity */ 363076ec38aSUlf Hansson static int mmc_decode_ext_csd(struct mmc_card *card, u8 *ext_csd) 36408ee80ccSPhilip Rakity { 365e0c368d5SNamjae Jeon int err = 0, idx; 366f3d7c229SBradley Bolen u64 part_size; 36781f8a7beSHans de Goede struct device_node *np; 36881f8a7beSHans de Goede bool broken_hpi = false; 36908ee80ccSPhilip Rakity 3706da24b78SKyungmin Park /* Version is coded in the CSD_STRUCTURE byte in the EXT_CSD register */ 371f39b2dd9SPhilip Rakity card->ext_csd.raw_ext_csd_structure = ext_csd[EXT_CSD_STRUCTURE]; 3726da24b78SKyungmin Park if (card->csd.structure == 3) { 373f39b2dd9SPhilip Rakity if (card->ext_csd.raw_ext_csd_structure > 2) { 374a3c76eb9SGirish K S pr_err("%s: unrecognised EXT_CSD structure " 3758fdd8521SPierre Ossman "version %d\n", mmc_hostname(card->host), 376f39b2dd9SPhilip Rakity card->ext_csd.raw_ext_csd_structure); 3776da24b78SKyungmin Park err = -EINVAL; 3786da24b78SKyungmin Park goto out; 3796da24b78SKyungmin Park } 3806da24b78SKyungmin Park } 3816da24b78SKyungmin Park 38281f8a7beSHans de Goede np = mmc_of_find_child_device(card->host, 0); 38381f8a7beSHans de Goede if (np && of_device_is_compatible(np, "mmc-card")) 38481f8a7beSHans de Goede broken_hpi = of_property_read_bool(np, "broken-hpi"); 38581f8a7beSHans de Goede of_node_put(np); 38681f8a7beSHans de Goede 38703a59437SRomain Izard /* 38803a59437SRomain Izard * The EXT_CSD format is meant to be forward compatible. As long 38903a59437SRomain Izard * as CSD_STRUCTURE does not change, all values for EXT_CSD_REV 39003a59437SRomain Izard * are authorized, see JEDEC JESD84-B50 section B.8. 39103a59437SRomain Izard */ 3926da24b78SKyungmin Park card->ext_csd.rev = ext_csd[EXT_CSD_REV]; 393d7604d76SPierre Ossman 3945320226aSPratibhasagar V /* fixup device after ext_csd revision field is updated */ 3955320226aSPratibhasagar V mmc_fixup_device(card, mmc_ext_csd_fixups); 3965320226aSPratibhasagar V 397f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[0] = ext_csd[EXT_CSD_SEC_CNT + 0]; 398f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[1] = ext_csd[EXT_CSD_SEC_CNT + 1]; 399f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[2] = ext_csd[EXT_CSD_SEC_CNT + 2]; 400f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[3] = ext_csd[EXT_CSD_SEC_CNT + 3]; 401b1ebe384SJarkko Lavinen if (card->ext_csd.rev >= 2) { 4027ea239d9SPierre Ossman card->ext_csd.sectors = 4037ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 0] << 0 | 4047ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 1] << 8 | 4057ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 2] << 16 | 4067ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 3] << 24; 407fc8a0985SHanumath Prasad 408fc8a0985SHanumath Prasad /* Cards with density > 2GiB are sector addressed */ 409fc8a0985SHanumath Prasad if (card->ext_csd.sectors > (2u * 1024 * 1024 * 1024) / 512) 4107ea239d9SPierre Ossman mmc_card_set_blockaddr(card); 411d7604d76SPierre Ossman } 41296cf5f02SSeungwon Jeon 41381ac2af6SShawn Lin card->ext_csd.strobe_support = ext_csd[EXT_CSD_STROBE_SUPPORT]; 414f39b2dd9SPhilip Rakity card->ext_csd.raw_card_type = ext_csd[EXT_CSD_CARD_TYPE]; 41596cf5f02SSeungwon Jeon mmc_select_card_type(card); 4167ea239d9SPierre Ossman 417f39b2dd9SPhilip Rakity card->ext_csd.raw_s_a_timeout = ext_csd[EXT_CSD_S_A_TIMEOUT]; 418f39b2dd9SPhilip Rakity card->ext_csd.raw_erase_timeout_mult = 419f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; 420f39b2dd9SPhilip Rakity card->ext_csd.raw_hc_erase_grp_size = 421f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 422dc913385SDmitry Osipenko card->ext_csd.raw_boot_mult = 423dc913385SDmitry Osipenko ext_csd[EXT_CSD_BOOT_MULT]; 424b1ebe384SJarkko Lavinen if (card->ext_csd.rev >= 3) { 425b1ebe384SJarkko Lavinen u8 sa_shift = ext_csd[EXT_CSD_S_A_TIMEOUT]; 426371a689fSAndrei Warkentin card->ext_csd.part_config = ext_csd[EXT_CSD_PART_CONFIG]; 427371a689fSAndrei Warkentin 428371a689fSAndrei Warkentin /* EXT_CSD value is in units of 10ms, but we store in ms */ 429371a689fSAndrei Warkentin card->ext_csd.part_time = 10 * ext_csd[EXT_CSD_PART_SWITCH_TIME]; 430b1ebe384SJarkko Lavinen 431b1ebe384SJarkko Lavinen /* Sleep / awake timeout in 100ns units */ 432b1ebe384SJarkko Lavinen if (sa_shift > 0 && sa_shift <= 0x17) 433b1ebe384SJarkko Lavinen card->ext_csd.sa_timeout = 434b1ebe384SJarkko Lavinen 1 << ext_csd[EXT_CSD_S_A_TIMEOUT]; 435dfe86cbaSAdrian Hunter card->ext_csd.erase_group_def = 436dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_ERASE_GROUP_DEF]; 437dfe86cbaSAdrian Hunter card->ext_csd.hc_erase_timeout = 300 * 438dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; 439dfe86cbaSAdrian Hunter card->ext_csd.hc_erase_size = 440dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] << 10; 441f4c5522bSAndrei Warkentin 442f4c5522bSAndrei Warkentin card->ext_csd.rel_sectors = ext_csd[EXT_CSD_REL_WR_SEC_C]; 443371a689fSAndrei Warkentin 444371a689fSAndrei Warkentin /* 445371a689fSAndrei Warkentin * There are two boot regions of equal size, defined in 446371a689fSAndrei Warkentin * multiples of 128K. 447371a689fSAndrei Warkentin */ 448e0c368d5SNamjae Jeon if (ext_csd[EXT_CSD_BOOT_MULT] && mmc_boot_partition_access(card->host)) { 449e0c368d5SNamjae Jeon for (idx = 0; idx < MMC_NUM_BOOT_PARTITION; idx++) { 450e0c368d5SNamjae Jeon part_size = ext_csd[EXT_CSD_BOOT_MULT] << 17; 451e0c368d5SNamjae Jeon mmc_part_add(card, part_size, 452e0c368d5SNamjae Jeon EXT_CSD_PART_CONFIG_ACC_BOOT0 + idx, 453add710eaSJohan Rudholm "boot%d", idx, true, 454add710eaSJohan Rudholm MMC_BLK_DATA_AREA_BOOT); 455e0c368d5SNamjae Jeon } 456e0c368d5SNamjae Jeon } 457b1ebe384SJarkko Lavinen } 458b1ebe384SJarkko Lavinen 459f39b2dd9SPhilip Rakity card->ext_csd.raw_hc_erase_gap_size = 460dd13b4edSJurgen Heeks ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 461f39b2dd9SPhilip Rakity card->ext_csd.raw_sec_trim_mult = 462f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_SEC_TRIM_MULT]; 463f39b2dd9SPhilip Rakity card->ext_csd.raw_sec_erase_mult = 464f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_SEC_ERASE_MULT]; 465f39b2dd9SPhilip Rakity card->ext_csd.raw_sec_feature_support = 466f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; 467f39b2dd9SPhilip Rakity card->ext_csd.raw_trim_mult = 468f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_TRIM_MULT]; 469836dc2feSPhilip Rakity card->ext_csd.raw_partition_support = ext_csd[EXT_CSD_PARTITION_SUPPORT]; 470b097e07fSAdrian Hunter card->ext_csd.raw_driver_strength = ext_csd[EXT_CSD_DRIVER_STRENGTH]; 471dfe86cbaSAdrian Hunter if (card->ext_csd.rev >= 4) { 47269803d4fSGrégory Soutadé if (ext_csd[EXT_CSD_PARTITION_SETTING_COMPLETED] & 47369803d4fSGrégory Soutadé EXT_CSD_PART_SETTING_COMPLETED) 47469803d4fSGrégory Soutadé card->ext_csd.partition_setting_completed = 1; 47569803d4fSGrégory Soutadé else 47669803d4fSGrégory Soutadé card->ext_csd.partition_setting_completed = 0; 47769803d4fSGrégory Soutadé 478b4493eeaSGrégory Soutadé mmc_manage_enhanced_area(card, ext_csd); 479709de99dSChuanxiao Dong 480b4493eeaSGrégory Soutadé mmc_manage_gp_partitions(card, ext_csd); 481e0c368d5SNamjae Jeon 482dfe86cbaSAdrian Hunter card->ext_csd.sec_trim_mult = 483dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_SEC_TRIM_MULT]; 484dfe86cbaSAdrian Hunter card->ext_csd.sec_erase_mult = 485dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_SEC_ERASE_MULT]; 486dfe86cbaSAdrian Hunter card->ext_csd.sec_feature_support = 487dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; 488dfe86cbaSAdrian Hunter card->ext_csd.trim_timeout = 300 * 489dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_TRIM_MULT]; 490add710eaSJohan Rudholm 491add710eaSJohan Rudholm /* 492add710eaSJohan Rudholm * Note that the call to mmc_part_add above defaults to read 493add710eaSJohan Rudholm * only. If this default assumption is changed, the call must 494add710eaSJohan Rudholm * take into account the value of boot_locked below. 495add710eaSJohan Rudholm */ 496add710eaSJohan Rudholm card->ext_csd.boot_ro_lock = ext_csd[EXT_CSD_BOOT_WP]; 497add710eaSJohan Rudholm card->ext_csd.boot_ro_lockable = true; 49860443712SFredrik Soderstedt 49960443712SFredrik Soderstedt /* Save power class values */ 50060443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_52_195 = 50160443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_52_195]; 50260443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_26_195 = 50360443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_26_195]; 50460443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_52_360 = 50560443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_52_360]; 50660443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_26_360 = 50760443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_26_360]; 50860443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_200_195 = 50960443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_200_195]; 51060443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_200_360 = 51160443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_200_360]; 51260443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_ddr_52_195 = 51360443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_DDR_52_195]; 51460443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_ddr_52_360 = 51560443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_DDR_52_360]; 5160a5b6438SSeungwon Jeon card->ext_csd.raw_pwr_cl_ddr_200_360 = 5170a5b6438SSeungwon Jeon ext_csd[EXT_CSD_PWR_CL_DDR_200_360]; 518dfe86cbaSAdrian Hunter } 519dfe86cbaSAdrian Hunter 520b2499518SAdrian Hunter if (card->ext_csd.rev >= 5) { 5217c4f10acSRomain Izard /* Adjust production date as per JEDEC JESD84-B451 */ 5227c4f10acSRomain Izard if (card->cid.year < 2010) 5237c4f10acSRomain Izard card->cid.year += 16; 5247c4f10acSRomain Izard 525950d56acSJaehoon Chung /* check whether the eMMC card supports BKOPS */ 526ba9f39a7SUlf Hansson if (ext_csd[EXT_CSD_BKOPS_SUPPORT] & 0x1) { 527950d56acSJaehoon Chung card->ext_csd.bkops = 1; 5280501be64SAlexey Skidanov card->ext_csd.man_bkops_en = 5290501be64SAlexey Skidanov (ext_csd[EXT_CSD_BKOPS_EN] & 5300501be64SAlexey Skidanov EXT_CSD_MANUAL_BKOPS_MASK); 531950d56acSJaehoon Chung card->ext_csd.raw_bkops_status = 532950d56acSJaehoon Chung ext_csd[EXT_CSD_BKOPS_STATUS]; 5336962c2fbSUri Yanai if (card->ext_csd.man_bkops_en) 5346962c2fbSUri Yanai pr_debug("%s: MAN_BKOPS_EN bit is set\n", 535950d56acSJaehoon Chung mmc_hostname(card->host)); 536efff8e78SUri Yanai card->ext_csd.auto_bkops_en = 537efff8e78SUri Yanai (ext_csd[EXT_CSD_BKOPS_EN] & 538efff8e78SUri Yanai EXT_CSD_AUTO_BKOPS_MASK); 539efff8e78SUri Yanai if (card->ext_csd.auto_bkops_en) 540efff8e78SUri Yanai pr_debug("%s: AUTO_BKOPS_EN bit is set\n", 541efff8e78SUri Yanai mmc_hostname(card->host)); 542950d56acSJaehoon Chung } 543950d56acSJaehoon Chung 544eb0d8f13SJaehoon Chung /* check whether the eMMC card supports HPI */ 5455320226aSPratibhasagar V if (!mmc_card_broken_hpi(card) && 5465320226aSPratibhasagar V !broken_hpi && (ext_csd[EXT_CSD_HPI_FEATURES] & 0x1)) { 547eb0d8f13SJaehoon Chung card->ext_csd.hpi = 1; 548eb0d8f13SJaehoon Chung if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x2) 549eb0d8f13SJaehoon Chung card->ext_csd.hpi_cmd = MMC_STOP_TRANSMISSION; 550eb0d8f13SJaehoon Chung else 551eb0d8f13SJaehoon Chung card->ext_csd.hpi_cmd = MMC_SEND_STATUS; 552eb0d8f13SJaehoon Chung /* 553eb0d8f13SJaehoon Chung * Indicate the maximum timeout to close 554eb0d8f13SJaehoon Chung * a command interrupted by HPI 555eb0d8f13SJaehoon Chung */ 556eb0d8f13SJaehoon Chung card->ext_csd.out_of_int_time = 557eb0d8f13SJaehoon Chung ext_csd[EXT_CSD_OUT_OF_INTERRUPT_TIME] * 10; 558eb0d8f13SJaehoon Chung } 559eb0d8f13SJaehoon Chung 560f4c5522bSAndrei Warkentin card->ext_csd.rel_param = ext_csd[EXT_CSD_WR_REL_PARAM]; 561b2499518SAdrian Hunter card->ext_csd.rst_n_function = ext_csd[EXT_CSD_RST_N_FUNCTION]; 562090d25feSLoic Pallardy 563090d25feSLoic Pallardy /* 564090d25feSLoic Pallardy * RPMB regions are defined in multiples of 128K. 565090d25feSLoic Pallardy */ 566090d25feSLoic Pallardy card->ext_csd.raw_rpmb_size_mult = ext_csd[EXT_CSD_RPMB_MULT]; 567d0123ccaSBalaji T K if (ext_csd[EXT_CSD_RPMB_MULT] && mmc_host_cmd23(card->host)) { 568090d25feSLoic Pallardy mmc_part_add(card, ext_csd[EXT_CSD_RPMB_MULT] << 17, 569090d25feSLoic Pallardy EXT_CSD_PART_CONFIG_ACC_RPMB, 570090d25feSLoic Pallardy "rpmb", 0, false, 571090d25feSLoic Pallardy MMC_BLK_DATA_AREA_RPMB); 572090d25feSLoic Pallardy } 573b2499518SAdrian Hunter } 574f4c5522bSAndrei Warkentin 5755238acbeSAndrei Warkentin card->ext_csd.raw_erased_mem_count = ext_csd[EXT_CSD_ERASED_MEM_CONT]; 576dfe86cbaSAdrian Hunter if (ext_csd[EXT_CSD_ERASED_MEM_CONT]) 577dfe86cbaSAdrian Hunter card->erased_byte = 0xFF; 578dfe86cbaSAdrian Hunter else 579dfe86cbaSAdrian Hunter card->erased_byte = 0x0; 580dfe86cbaSAdrian Hunter 581336c716aSSeungwon Jeon /* eMMC v4.5 or later */ 582fe1b5700SUlf Hansson card->ext_csd.generic_cmd6_time = DEFAULT_CMD6_TIMEOUT_MS; 583bec8726aSGirish K S if (card->ext_csd.rev >= 6) { 584336c716aSSeungwon Jeon card->ext_csd.feature_support |= MMC_DISCARD_FEATURE; 585336c716aSSeungwon Jeon 586b23cf0bdSSeungwon Jeon card->ext_csd.generic_cmd6_time = 10 * 587b23cf0bdSSeungwon Jeon ext_csd[EXT_CSD_GENERIC_CMD6_TIME]; 588bec8726aSGirish K S card->ext_csd.power_off_longtime = 10 * 589bec8726aSGirish K S ext_csd[EXT_CSD_POWER_OFF_LONG_TIME]; 590b23cf0bdSSeungwon Jeon 591881d1c25SSeungwon Jeon card->ext_csd.cache_size = 592881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 0] << 0 | 593881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 1] << 8 | 594881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 2] << 16 | 595881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 3] << 24; 5964265900eSSaugata Das 5974265900eSSaugata Das if (ext_csd[EXT_CSD_DATA_SECTOR_SIZE] == 1) 5984265900eSSaugata Das card->ext_csd.data_sector_size = 4096; 5994265900eSSaugata Das else 6004265900eSSaugata Das card->ext_csd.data_sector_size = 512; 6014265900eSSaugata Das 6024265900eSSaugata Das if ((ext_csd[EXT_CSD_DATA_TAG_SUPPORT] & 1) && 6034265900eSSaugata Das (ext_csd[EXT_CSD_TAG_UNIT_SIZE] <= 8)) { 6044265900eSSaugata Das card->ext_csd.data_tag_unit_size = 6054265900eSSaugata Das ((unsigned int) 1 << ext_csd[EXT_CSD_TAG_UNIT_SIZE]) * 6064265900eSSaugata Das (card->ext_csd.data_sector_size); 6074265900eSSaugata Das } else { 6084265900eSSaugata Das card->ext_csd.data_tag_unit_size = 0; 6094265900eSSaugata Das } 610abd9ac14SSeungwon Jeon 611abd9ac14SSeungwon Jeon card->ext_csd.max_packed_writes = 612abd9ac14SSeungwon Jeon ext_csd[EXT_CSD_MAX_PACKED_WRITES]; 613abd9ac14SSeungwon Jeon card->ext_csd.max_packed_reads = 614abd9ac14SSeungwon Jeon ext_csd[EXT_CSD_MAX_PACKED_READS]; 615a5075eb9SSaugata Das } else { 616a5075eb9SSaugata Das card->ext_csd.data_sector_size = 512; 617336c716aSSeungwon Jeon } 618881d1c25SSeungwon Jeon 61966fbacccSAdrian Hunter /* 62066fbacccSAdrian Hunter * GENERIC_CMD6_TIME is to be used "unless a specific timeout is defined 62166fbacccSAdrian Hunter * when accessing a specific field", so use it here if there is no 62266fbacccSAdrian Hunter * PARTITION_SWITCH_TIME. 62366fbacccSAdrian Hunter */ 62466fbacccSAdrian Hunter if (!card->ext_csd.part_time) 62566fbacccSAdrian Hunter card->ext_csd.part_time = card->ext_csd.generic_cmd6_time; 62666fbacccSAdrian Hunter /* Some eMMC set the value too low so set a minimum */ 62766fbacccSAdrian Hunter if (card->ext_csd.part_time < MMC_MIN_PART_SWITCH_TIME) 62866fbacccSAdrian Hunter card->ext_csd.part_time = MMC_MIN_PART_SWITCH_TIME; 62966fbacccSAdrian Hunter 6300f762426SGwendal Grignou /* eMMC v5 or later */ 6310f762426SGwendal Grignou if (card->ext_csd.rev >= 7) { 6320f762426SGwendal Grignou memcpy(card->ext_csd.fwrev, &ext_csd[EXT_CSD_FIRMWARE_VERSION], 6330f762426SGwendal Grignou MMC_FIRMWARE_LEN); 6340f762426SGwendal Grignou card->ext_csd.ffu_capable = 6350f762426SGwendal Grignou (ext_csd[EXT_CSD_SUPPORTED_MODE] & 0x1) && 6360f762426SGwendal Grignou !(ext_csd[EXT_CSD_FW_CONFIG] & 0x1); 63746bc5c40SJungseung Lee 63846bc5c40SJungseung Lee card->ext_csd.pre_eol_info = ext_csd[EXT_CSD_PRE_EOL_INFO]; 63946bc5c40SJungseung Lee card->ext_csd.device_life_time_est_typ_a = 64046bc5c40SJungseung Lee ext_csd[EXT_CSD_DEVICE_LIFE_TIME_EST_TYP_A]; 64146bc5c40SJungseung Lee card->ext_csd.device_life_time_est_typ_b = 64246bc5c40SJungseung Lee ext_csd[EXT_CSD_DEVICE_LIFE_TIME_EST_TYP_B]; 6430f762426SGwendal Grignou } 644925ff3a7SAdrian Hunter 645925ff3a7SAdrian Hunter /* eMMC v5.1 or later */ 646925ff3a7SAdrian Hunter if (card->ext_csd.rev >= 8) { 647925ff3a7SAdrian Hunter card->ext_csd.cmdq_support = ext_csd[EXT_CSD_CMDQ_SUPPORT] & 648925ff3a7SAdrian Hunter EXT_CSD_CMDQ_SUPPORTED; 649925ff3a7SAdrian Hunter card->ext_csd.cmdq_depth = (ext_csd[EXT_CSD_CMDQ_DEPTH] & 650925ff3a7SAdrian Hunter EXT_CSD_CMDQ_DEPTH_MASK) + 1; 651925ff3a7SAdrian Hunter /* Exclude inefficiently small queue depths */ 652925ff3a7SAdrian Hunter if (card->ext_csd.cmdq_depth <= 2) { 653925ff3a7SAdrian Hunter card->ext_csd.cmdq_support = false; 654925ff3a7SAdrian Hunter card->ext_csd.cmdq_depth = 0; 655925ff3a7SAdrian Hunter } 656925ff3a7SAdrian Hunter if (card->ext_csd.cmdq_support) { 657925ff3a7SAdrian Hunter pr_debug("%s: Command Queue supported depth %u\n", 658925ff3a7SAdrian Hunter mmc_hostname(card->host), 659925ff3a7SAdrian Hunter card->ext_csd.cmdq_depth); 660925ff3a7SAdrian Hunter } 661064f7e58SKrishna Konda card->ext_csd.enhanced_rpmb_supported = 662064f7e58SKrishna Konda (card->ext_csd.rel_param & 663064f7e58SKrishna Konda EXT_CSD_WR_REL_PARAM_EN_RPMB_REL_WR); 664925ff3a7SAdrian Hunter } 6657ea239d9SPierre Ossman out: 66608ee80ccSPhilip Rakity return err; 66708ee80ccSPhilip Rakity } 6687ea239d9SPierre Ossman 669076ec38aSUlf Hansson static int mmc_read_ext_csd(struct mmc_card *card) 670076ec38aSUlf Hansson { 671c197787cSUlf Hansson u8 *ext_csd; 672076ec38aSUlf Hansson int err; 673076ec38aSUlf Hansson 674c197787cSUlf Hansson if (!mmc_can_ext_csd(card)) 675c197787cSUlf Hansson return 0; 676c197787cSUlf Hansson 677076ec38aSUlf Hansson err = mmc_get_ext_csd(card, &ext_csd); 678c197787cSUlf Hansson if (err) { 679c197787cSUlf Hansson /* If the host or the card can't do the switch, 680c197787cSUlf Hansson * fail more gracefully. */ 681c197787cSUlf Hansson if ((err != -EINVAL) 682c197787cSUlf Hansson && (err != -ENOSYS) 683c197787cSUlf Hansson && (err != -EFAULT)) 684076ec38aSUlf Hansson return err; 685076ec38aSUlf Hansson 686c197787cSUlf Hansson /* 687c197787cSUlf Hansson * High capacity cards should have this "magic" size 688c197787cSUlf Hansson * stored in their CSD. 689c197787cSUlf Hansson */ 690c197787cSUlf Hansson if (card->csd.capacity == (4096 * 512)) { 691c197787cSUlf Hansson pr_err("%s: unable to read EXT_CSD on a possible high capacity card. Card will be ignored.\n", 692c197787cSUlf Hansson mmc_hostname(card->host)); 693c197787cSUlf Hansson } else { 694c197787cSUlf Hansson pr_warn("%s: unable to read EXT_CSD, performance might suffer\n", 695c197787cSUlf Hansson mmc_hostname(card->host)); 696c197787cSUlf Hansson err = 0; 697c197787cSUlf Hansson } 698c197787cSUlf Hansson 699c197787cSUlf Hansson return err; 700c197787cSUlf Hansson } 701c197787cSUlf Hansson 702076ec38aSUlf Hansson err = mmc_decode_ext_csd(card, ext_csd); 703076ec38aSUlf Hansson kfree(ext_csd); 704076ec38aSUlf Hansson return err; 705076ec38aSUlf Hansson } 706076ec38aSUlf Hansson 707f39b2dd9SPhilip Rakity static int mmc_compare_ext_csds(struct mmc_card *card, unsigned bus_width) 70808ee80ccSPhilip Rakity { 70908ee80ccSPhilip Rakity u8 *bw_ext_csd; 71008ee80ccSPhilip Rakity int err; 71108ee80ccSPhilip Rakity 712f39b2dd9SPhilip Rakity if (bus_width == MMC_BUS_WIDTH_1) 713f39b2dd9SPhilip Rakity return 0; 71408ee80ccSPhilip Rakity 715f39b2dd9SPhilip Rakity err = mmc_get_ext_csd(card, &bw_ext_csd); 716c197787cSUlf Hansson if (err) 717c197787cSUlf Hansson return err; 71808ee80ccSPhilip Rakity 71908ee80ccSPhilip Rakity /* only compare read only fields */ 720dd13b4edSJurgen Heeks err = !((card->ext_csd.raw_partition_support == 72108ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_PARTITION_SUPPORT]) && 722f39b2dd9SPhilip Rakity (card->ext_csd.raw_erased_mem_count == 72308ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_ERASED_MEM_CONT]) && 724f39b2dd9SPhilip Rakity (card->ext_csd.rev == 72508ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_REV]) && 726f39b2dd9SPhilip Rakity (card->ext_csd.raw_ext_csd_structure == 72708ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_STRUCTURE]) && 728f39b2dd9SPhilip Rakity (card->ext_csd.raw_card_type == 72908ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_CARD_TYPE]) && 730f39b2dd9SPhilip Rakity (card->ext_csd.raw_s_a_timeout == 73108ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_S_A_TIMEOUT]) && 732f39b2dd9SPhilip Rakity (card->ext_csd.raw_hc_erase_gap_size == 73308ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_HC_WP_GRP_SIZE]) && 734f39b2dd9SPhilip Rakity (card->ext_csd.raw_erase_timeout_mult == 73508ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]) && 736f39b2dd9SPhilip Rakity (card->ext_csd.raw_hc_erase_grp_size == 73708ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]) && 738f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_trim_mult == 73908ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_TRIM_MULT]) && 740f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_erase_mult == 74108ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_ERASE_MULT]) && 742f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_feature_support == 74308ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]) && 744f39b2dd9SPhilip Rakity (card->ext_csd.raw_trim_mult == 74508ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_TRIM_MULT]) && 746f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[0] == 747f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 0]) && 748f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[1] == 749f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 1]) && 750f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[2] == 751f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 2]) && 752f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[3] == 75360443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_SEC_CNT + 3]) && 75460443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_52_195 == 75560443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_52_195]) && 75660443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_26_195 == 75760443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_26_195]) && 75860443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_52_360 == 75960443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_52_360]) && 76060443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_26_360 == 76160443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_26_360]) && 76260443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_200_195 == 76360443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_200_195]) && 76460443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_200_360 == 76560443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_200_360]) && 76660443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_ddr_52_195 == 76760443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_195]) && 76860443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_ddr_52_360 == 7690a5b6438SSeungwon Jeon bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_360]) && 7700a5b6438SSeungwon Jeon (card->ext_csd.raw_pwr_cl_ddr_200_360 == 7710a5b6438SSeungwon Jeon bw_ext_csd[EXT_CSD_PWR_CL_DDR_200_360])); 7720a5b6438SSeungwon Jeon 77308ee80ccSPhilip Rakity if (err) 77408ee80ccSPhilip Rakity err = -EINVAL; 77508ee80ccSPhilip Rakity 77600b41b58SUlf Hansson kfree(bw_ext_csd); 7777ea239d9SPierre Ossman return err; 7787ea239d9SPierre Ossman } 7797ea239d9SPierre Ossman 78051ec92e2SPierre Ossman MMC_DEV_ATTR(cid, "%08x%08x%08x%08x\n", card->raw_cid[0], card->raw_cid[1], 78151ec92e2SPierre Ossman card->raw_cid[2], card->raw_cid[3]); 78251ec92e2SPierre Ossman MMC_DEV_ATTR(csd, "%08x%08x%08x%08x\n", card->raw_csd[0], card->raw_csd[1], 78351ec92e2SPierre Ossman card->raw_csd[2], card->raw_csd[3]); 78451ec92e2SPierre Ossman MMC_DEV_ATTR(date, "%02d/%04d\n", card->cid.month, card->cid.year); 785dfe86cbaSAdrian Hunter MMC_DEV_ATTR(erase_size, "%u\n", card->erase_size << 9); 786dfe86cbaSAdrian Hunter MMC_DEV_ATTR(preferred_erase_size, "%u\n", card->pref_erase << 9); 7870f762426SGwendal Grignou MMC_DEV_ATTR(ffu_capable, "%d\n", card->ext_csd.ffu_capable); 78851ec92e2SPierre Ossman MMC_DEV_ATTR(hwrev, "0x%x\n", card->cid.hwrev); 78951ec92e2SPierre Ossman MMC_DEV_ATTR(manfid, "0x%06x\n", card->cid.manfid); 79051ec92e2SPierre Ossman MMC_DEV_ATTR(name, "%s\n", card->cid.prod_name); 79151ec92e2SPierre Ossman MMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid); 79251e7e8b6SBernie Thompson MMC_DEV_ATTR(prv, "0x%x\n", card->cid.prv); 79304fa0540SJin Qian MMC_DEV_ATTR(rev, "0x%x\n", card->ext_csd.rev); 79480a780a1SBastian Stender MMC_DEV_ATTR(pre_eol_info, "0x%02x\n", card->ext_csd.pre_eol_info); 79546bc5c40SJungseung Lee MMC_DEV_ATTR(life_time, "0x%02x 0x%02x\n", 79646bc5c40SJungseung Lee card->ext_csd.device_life_time_est_typ_a, 79746bc5c40SJungseung Lee card->ext_csd.device_life_time_est_typ_b); 79851ec92e2SPierre Ossman MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial); 799709de99dSChuanxiao Dong MMC_DEV_ATTR(enhanced_area_offset, "%llu\n", 800709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset); 801709de99dSChuanxiao Dong MMC_DEV_ATTR(enhanced_area_size, "%u\n", card->ext_csd.enhanced_area_size); 802188cc042SLoic Pallardy MMC_DEV_ATTR(raw_rpmb_size_mult, "%#x\n", card->ext_csd.raw_rpmb_size_mult); 803064f7e58SKrishna Konda MMC_DEV_ATTR(enhanced_rpmb_supported, "%#x\n", 804064f7e58SKrishna Konda card->ext_csd.enhanced_rpmb_supported); 805188cc042SLoic Pallardy MMC_DEV_ATTR(rel_sectors, "%#x\n", card->ext_csd.rel_sectors); 806c892b0d8SBastian Stender MMC_DEV_ATTR(ocr, "0x%08x\n", card->ocr); 807974e85e9SHarish Jenny K N MMC_DEV_ATTR(rca, "0x%04x\n", card->rca); 808b658af71SAdrian Hunter MMC_DEV_ATTR(cmdq_en, "%d\n", card->ext_csd.cmdq_en); 80951ec92e2SPierre Ossman 8100f762426SGwendal Grignou static ssize_t mmc_fwrev_show(struct device *dev, 8110f762426SGwendal Grignou struct device_attribute *attr, 8120f762426SGwendal Grignou char *buf) 8130f762426SGwendal Grignou { 8140f762426SGwendal Grignou struct mmc_card *card = mmc_dev_to_card(dev); 8150f762426SGwendal Grignou 816f5d8a5feSSergey Shtylyov if (card->ext_csd.rev < 7) 817f5d8a5feSSergey Shtylyov return sysfs_emit(buf, "0x%x\n", card->cid.fwrev); 818f5d8a5feSSergey Shtylyov else 819f5d8a5feSSergey Shtylyov return sysfs_emit(buf, "0x%*phN\n", MMC_FIRMWARE_LEN, 8200f762426SGwendal Grignou card->ext_csd.fwrev); 8210f762426SGwendal Grignou } 8220f762426SGwendal Grignou 8230f762426SGwendal Grignou static DEVICE_ATTR(fwrev, S_IRUGO, mmc_fwrev_show, NULL); 8240f762426SGwendal Grignou 8256825a606SBojan Prtvar static ssize_t mmc_dsr_show(struct device *dev, 8266825a606SBojan Prtvar struct device_attribute *attr, 8276825a606SBojan Prtvar char *buf) 8286825a606SBojan Prtvar { 8296825a606SBojan Prtvar struct mmc_card *card = mmc_dev_to_card(dev); 8306825a606SBojan Prtvar struct mmc_host *host = card->host; 8316825a606SBojan Prtvar 8326825a606SBojan Prtvar if (card->csd.dsr_imp && host->dsr_req) 833f5d8a5feSSergey Shtylyov return sysfs_emit(buf, "0x%x\n", host->dsr); 8346825a606SBojan Prtvar else 8356825a606SBojan Prtvar /* return default DSR value */ 836f5d8a5feSSergey Shtylyov return sysfs_emit(buf, "0x%x\n", 0x404); 8376825a606SBojan Prtvar } 8386825a606SBojan Prtvar 8396825a606SBojan Prtvar static DEVICE_ATTR(dsr, S_IRUGO, mmc_dsr_show, NULL); 8406825a606SBojan Prtvar 84151ec92e2SPierre Ossman static struct attribute *mmc_std_attrs[] = { 84251ec92e2SPierre Ossman &dev_attr_cid.attr, 84351ec92e2SPierre Ossman &dev_attr_csd.attr, 84451ec92e2SPierre Ossman &dev_attr_date.attr, 845dfe86cbaSAdrian Hunter &dev_attr_erase_size.attr, 846dfe86cbaSAdrian Hunter &dev_attr_preferred_erase_size.attr, 84751ec92e2SPierre Ossman &dev_attr_fwrev.attr, 8480f762426SGwendal Grignou &dev_attr_ffu_capable.attr, 84951ec92e2SPierre Ossman &dev_attr_hwrev.attr, 85051ec92e2SPierre Ossman &dev_attr_manfid.attr, 85151ec92e2SPierre Ossman &dev_attr_name.attr, 85251ec92e2SPierre Ossman &dev_attr_oemid.attr, 85351e7e8b6SBernie Thompson &dev_attr_prv.attr, 85404fa0540SJin Qian &dev_attr_rev.attr, 85546bc5c40SJungseung Lee &dev_attr_pre_eol_info.attr, 85646bc5c40SJungseung Lee &dev_attr_life_time.attr, 85751ec92e2SPierre Ossman &dev_attr_serial.attr, 858709de99dSChuanxiao Dong &dev_attr_enhanced_area_offset.attr, 859709de99dSChuanxiao Dong &dev_attr_enhanced_area_size.attr, 860188cc042SLoic Pallardy &dev_attr_raw_rpmb_size_mult.attr, 861064f7e58SKrishna Konda &dev_attr_enhanced_rpmb_supported.attr, 862188cc042SLoic Pallardy &dev_attr_rel_sectors.attr, 8635fb06af7SBojan Prtvar &dev_attr_ocr.attr, 864974e85e9SHarish Jenny K N &dev_attr_rca.attr, 8656825a606SBojan Prtvar &dev_attr_dsr.attr, 866b658af71SAdrian Hunter &dev_attr_cmdq_en.attr, 86751ec92e2SPierre Ossman NULL, 86851ec92e2SPierre Ossman }; 869d1e58212SAxel Lin ATTRIBUTE_GROUPS(mmc_std); 87051ec92e2SPierre Ossman 87151ec92e2SPierre Ossman static struct device_type mmc_type = { 872d1e58212SAxel Lin .groups = mmc_std_groups, 87351ec92e2SPierre Ossman }; 87451ec92e2SPierre Ossman 8757ea239d9SPierre Ossman /* 876b87d8dbfSGirish K S * Select the PowerClass for the current bus width 877b87d8dbfSGirish K S * If power class is defined for 4/8 bit bus in the 878b87d8dbfSGirish K S * extended CSD register, select it by executing the 879b87d8dbfSGirish K S * mmc_switch command. 880b87d8dbfSGirish K S */ 8812385049dSSeungwon Jeon static int __mmc_select_powerclass(struct mmc_card *card, 88260443712SFredrik Soderstedt unsigned int bus_width) 883b87d8dbfSGirish K S { 8842385049dSSeungwon Jeon struct mmc_host *host = card->host; 8852385049dSSeungwon Jeon struct mmc_ext_csd *ext_csd = &card->ext_csd; 88660443712SFredrik Soderstedt unsigned int pwrclass_val = 0; 8872385049dSSeungwon Jeon int err = 0; 888b87d8dbfSGirish K S 889b87d8dbfSGirish K S switch (1 << host->ios.vdd) { 890b87d8dbfSGirish K S case MMC_VDD_165_195: 8912385049dSSeungwon Jeon if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) 8922385049dSSeungwon Jeon pwrclass_val = ext_csd->raw_pwr_cl_26_195; 8932385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR) 89460443712SFredrik Soderstedt pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? 8952385049dSSeungwon Jeon ext_csd->raw_pwr_cl_52_195 : 8962385049dSSeungwon Jeon ext_csd->raw_pwr_cl_ddr_52_195; 8972385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HS200_MAX_DTR) 8982385049dSSeungwon Jeon pwrclass_val = ext_csd->raw_pwr_cl_200_195; 899b87d8dbfSGirish K S break; 90093fc5a47SSubhash Jadavani case MMC_VDD_27_28: 90193fc5a47SSubhash Jadavani case MMC_VDD_28_29: 90293fc5a47SSubhash Jadavani case MMC_VDD_29_30: 90393fc5a47SSubhash Jadavani case MMC_VDD_30_31: 90493fc5a47SSubhash Jadavani case MMC_VDD_31_32: 905b87d8dbfSGirish K S case MMC_VDD_32_33: 906b87d8dbfSGirish K S case MMC_VDD_33_34: 907b87d8dbfSGirish K S case MMC_VDD_34_35: 908b87d8dbfSGirish K S case MMC_VDD_35_36: 9092385049dSSeungwon Jeon if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) 9102385049dSSeungwon Jeon pwrclass_val = ext_csd->raw_pwr_cl_26_360; 9112385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR) 91260443712SFredrik Soderstedt pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? 9132385049dSSeungwon Jeon ext_csd->raw_pwr_cl_52_360 : 9142385049dSSeungwon Jeon ext_csd->raw_pwr_cl_ddr_52_360; 9152385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HS200_MAX_DTR) 9160a5b6438SSeungwon Jeon pwrclass_val = (bus_width == EXT_CSD_DDR_BUS_WIDTH_8) ? 9170a5b6438SSeungwon Jeon ext_csd->raw_pwr_cl_ddr_200_360 : 9180a5b6438SSeungwon Jeon ext_csd->raw_pwr_cl_200_360; 919b87d8dbfSGirish K S break; 920b87d8dbfSGirish K S default: 9216606110dSJoe Perches pr_warn("%s: Voltage range not supported for power class\n", 9226606110dSJoe Perches mmc_hostname(host)); 923b87d8dbfSGirish K S return -EINVAL; 924b87d8dbfSGirish K S } 925b87d8dbfSGirish K S 926b87d8dbfSGirish K S if (bus_width & (EXT_CSD_BUS_WIDTH_8 | EXT_CSD_DDR_BUS_WIDTH_8)) 927b87d8dbfSGirish K S pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_8BIT_MASK) >> 928b87d8dbfSGirish K S EXT_CSD_PWR_CL_8BIT_SHIFT; 929b87d8dbfSGirish K S else 930b87d8dbfSGirish K S pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_4BIT_MASK) >> 931b87d8dbfSGirish K S EXT_CSD_PWR_CL_4BIT_SHIFT; 932b87d8dbfSGirish K S 933b87d8dbfSGirish K S /* If the power class is different from the default value */ 934b87d8dbfSGirish K S if (pwrclass_val > 0) { 935b87d8dbfSGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 936b87d8dbfSGirish K S EXT_CSD_POWER_CLASS, 937b87d8dbfSGirish K S pwrclass_val, 93871fe3eb0SSeungwon Jeon card->ext_csd.generic_cmd6_time); 939b87d8dbfSGirish K S } 940b87d8dbfSGirish K S 941b87d8dbfSGirish K S return err; 942b87d8dbfSGirish K S } 943b87d8dbfSGirish K S 9442385049dSSeungwon Jeon static int mmc_select_powerclass(struct mmc_card *card) 9452385049dSSeungwon Jeon { 9462385049dSSeungwon Jeon struct mmc_host *host = card->host; 9472385049dSSeungwon Jeon u32 bus_width, ext_csd_bits; 9482385049dSSeungwon Jeon int err, ddr; 9492385049dSSeungwon Jeon 9502385049dSSeungwon Jeon /* Power class selection is supported for versions >= 4.0 */ 951148bcab2SUlf Hansson if (!mmc_can_ext_csd(card)) 9522385049dSSeungwon Jeon return 0; 9532385049dSSeungwon Jeon 9542385049dSSeungwon Jeon bus_width = host->ios.bus_width; 9552385049dSSeungwon Jeon /* Power class values are defined only for 4/8 bit bus */ 9562385049dSSeungwon Jeon if (bus_width == MMC_BUS_WIDTH_1) 9572385049dSSeungwon Jeon return 0; 9582385049dSSeungwon Jeon 9592385049dSSeungwon Jeon ddr = card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52; 9602385049dSSeungwon Jeon if (ddr) 9612385049dSSeungwon Jeon ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? 9622385049dSSeungwon Jeon EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; 9632385049dSSeungwon Jeon else 9642385049dSSeungwon Jeon ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? 9652385049dSSeungwon Jeon EXT_CSD_BUS_WIDTH_8 : EXT_CSD_BUS_WIDTH_4; 9662385049dSSeungwon Jeon 9672385049dSSeungwon Jeon err = __mmc_select_powerclass(card, ext_csd_bits); 9682385049dSSeungwon Jeon if (err) 9692385049dSSeungwon Jeon pr_warn("%s: power class selection to bus width %d ddr %d failed\n", 9702385049dSSeungwon Jeon mmc_hostname(host), 1 << bus_width, ddr); 9712385049dSSeungwon Jeon 9722385049dSSeungwon Jeon return err; 9732385049dSSeungwon Jeon } 9742385049dSSeungwon Jeon 975b87d8dbfSGirish K S /* 976577fb131SSeungwon Jeon * Set the bus speed for the selected speed mode. 977a4924c71SGirish K S */ 978577fb131SSeungwon Jeon static void mmc_set_bus_speed(struct mmc_card *card) 979a4924c71SGirish K S { 980577fb131SSeungwon Jeon unsigned int max_dtr = (unsigned int)-1; 981577fb131SSeungwon Jeon 9820a5b6438SSeungwon Jeon if ((mmc_card_hs200(card) || mmc_card_hs400(card)) && 9830a5b6438SSeungwon Jeon max_dtr > card->ext_csd.hs200_max_dtr) 984577fb131SSeungwon Jeon max_dtr = card->ext_csd.hs200_max_dtr; 985577fb131SSeungwon Jeon else if (mmc_card_hs(card) && max_dtr > card->ext_csd.hs_max_dtr) 986577fb131SSeungwon Jeon max_dtr = card->ext_csd.hs_max_dtr; 987577fb131SSeungwon Jeon else if (max_dtr > card->csd.max_dtr) 988577fb131SSeungwon Jeon max_dtr = card->csd.max_dtr; 989577fb131SSeungwon Jeon 990577fb131SSeungwon Jeon mmc_set_clock(card->host, max_dtr); 991577fb131SSeungwon Jeon } 992577fb131SSeungwon Jeon 993577fb131SSeungwon Jeon /* 994577fb131SSeungwon Jeon * Select the bus width amoung 4-bit and 8-bit(SDR). 995577fb131SSeungwon Jeon * If the bus width is changed successfully, return the selected width value. 996577fb131SSeungwon Jeon * Zero is returned instead of error value if the wide width is not supported. 997577fb131SSeungwon Jeon */ 998577fb131SSeungwon Jeon static int mmc_select_bus_width(struct mmc_card *card) 999577fb131SSeungwon Jeon { 1000a4924c71SGirish K S static unsigned ext_csd_bits[] = { 1001a4924c71SGirish K S EXT_CSD_BUS_WIDTH_8, 1002577fb131SSeungwon Jeon EXT_CSD_BUS_WIDTH_4, 1003a4924c71SGirish K S }; 1004a4924c71SGirish K S static unsigned bus_widths[] = { 1005a4924c71SGirish K S MMC_BUS_WIDTH_8, 1006577fb131SSeungwon Jeon MMC_BUS_WIDTH_4, 1007a4924c71SGirish K S }; 1008577fb131SSeungwon Jeon struct mmc_host *host = card->host; 1009577fb131SSeungwon Jeon unsigned idx, bus_width = 0; 1010577fb131SSeungwon Jeon int err = 0; 1011a4924c71SGirish K S 10121c2d26e3SAlexandre Belloni if (!mmc_can_ext_csd(card) || 1013577fb131SSeungwon Jeon !(host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) 1014577fb131SSeungwon Jeon return 0; 1015a4924c71SGirish K S 1016577fb131SSeungwon Jeon idx = (host->caps & MMC_CAP_8_BIT_DATA) ? 0 : 1; 1017a4924c71SGirish K S 1018a4924c71SGirish K S /* 1019a4924c71SGirish K S * Unlike SD, MMC cards dont have a configuration register to notify 1020a4924c71SGirish K S * supported bus width. So bus test command should be run to identify 1021a4924c71SGirish K S * the supported bus width or compare the ext csd values of current 1022a4924c71SGirish K S * bus width and ext csd values of 1 bit mode read earlier. 1023a4924c71SGirish K S */ 1024577fb131SSeungwon Jeon for (; idx < ARRAY_SIZE(bus_widths); idx++) { 1025a4924c71SGirish K S /* 1026a4924c71SGirish K S * Host is capable of 8bit transfer, then switch 1027a4924c71SGirish K S * the device to work in 8bit transfer mode. If the 1028a4924c71SGirish K S * mmc switch command returns error then switch to 1029a4924c71SGirish K S * 4bit transfer mode. On success set the corresponding 1030a4924c71SGirish K S * bus width on the host. 1031a4924c71SGirish K S */ 1032a4924c71SGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1033a4924c71SGirish K S EXT_CSD_BUS_WIDTH, 1034a4924c71SGirish K S ext_csd_bits[idx], 1035a4924c71SGirish K S card->ext_csd.generic_cmd6_time); 1036a4924c71SGirish K S if (err) 1037a4924c71SGirish K S continue; 1038a4924c71SGirish K S 1039577fb131SSeungwon Jeon bus_width = bus_widths[idx]; 1040577fb131SSeungwon Jeon mmc_set_bus_width(host, bus_width); 1041a4924c71SGirish K S 1042577fb131SSeungwon Jeon /* 1043577fb131SSeungwon Jeon * If controller can't handle bus width test, 1044577fb131SSeungwon Jeon * compare ext_csd previously read in 1 bit mode 1045577fb131SSeungwon Jeon * against ext_csd at new bus width 1046577fb131SSeungwon Jeon */ 1047a4924c71SGirish K S if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST)) 1048577fb131SSeungwon Jeon err = mmc_compare_ext_csds(card, bus_width); 1049a4924c71SGirish K S else 1050577fb131SSeungwon Jeon err = mmc_bus_test(card, bus_width); 1051577fb131SSeungwon Jeon 1052577fb131SSeungwon Jeon if (!err) { 1053577fb131SSeungwon Jeon err = bus_width; 1054a4924c71SGirish K S break; 1055577fb131SSeungwon Jeon } else { 1056577fb131SSeungwon Jeon pr_warn("%s: switch to bus width %d failed\n", 1057ed9feec7SWolfram Sang mmc_hostname(host), 1 << bus_width); 1058577fb131SSeungwon Jeon } 1059a4924c71SGirish K S } 1060a4924c71SGirish K S 1061577fb131SSeungwon Jeon return err; 1062577fb131SSeungwon Jeon } 1063577fb131SSeungwon Jeon 1064577fb131SSeungwon Jeon /* 1065577fb131SSeungwon Jeon * Switch to the high-speed mode 1066577fb131SSeungwon Jeon */ 1067577fb131SSeungwon Jeon static int mmc_select_hs(struct mmc_card *card) 1068577fb131SSeungwon Jeon { 1069577fb131SSeungwon Jeon int err; 1070577fb131SSeungwon Jeon 10714509f847SUlf Hansson err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1072577fb131SSeungwon Jeon EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS, 107353e60650SUlf Hansson card->ext_csd.generic_cmd6_time, MMC_TIMING_MMC_HS, 10745e52a168SBean Huo true, true, MMC_CMD_RETRIES); 107567d35960SJungseung Lee if (err) 107667d35960SJungseung Lee pr_warn("%s: switch to high-speed failed, err:%d\n", 107767d35960SJungseung Lee mmc_hostname(card->host), err); 107867d35960SJungseung Lee 1079577fb131SSeungwon Jeon return err; 1080577fb131SSeungwon Jeon } 1081577fb131SSeungwon Jeon 1082577fb131SSeungwon Jeon /* 1083577fb131SSeungwon Jeon * Activate wide bus and DDR if supported. 1084577fb131SSeungwon Jeon */ 1085577fb131SSeungwon Jeon static int mmc_select_hs_ddr(struct mmc_card *card) 1086577fb131SSeungwon Jeon { 1087577fb131SSeungwon Jeon struct mmc_host *host = card->host; 1088577fb131SSeungwon Jeon u32 bus_width, ext_csd_bits; 1089577fb131SSeungwon Jeon int err = 0; 1090577fb131SSeungwon Jeon 1091577fb131SSeungwon Jeon if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52)) 1092577fb131SSeungwon Jeon return 0; 1093577fb131SSeungwon Jeon 1094577fb131SSeungwon Jeon bus_width = host->ios.bus_width; 1095577fb131SSeungwon Jeon if (bus_width == MMC_BUS_WIDTH_1) 1096577fb131SSeungwon Jeon return 0; 1097577fb131SSeungwon Jeon 1098577fb131SSeungwon Jeon ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? 1099577fb131SSeungwon Jeon EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; 1100577fb131SSeungwon Jeon 1101e173f891SUlf Hansson err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1102577fb131SSeungwon Jeon EXT_CSD_BUS_WIDTH, 1103577fb131SSeungwon Jeon ext_csd_bits, 1104e173f891SUlf Hansson card->ext_csd.generic_cmd6_time, 1105e173f891SUlf Hansson MMC_TIMING_MMC_DDR52, 11065e52a168SBean Huo true, true, MMC_CMD_RETRIES); 1107577fb131SSeungwon Jeon if (err) { 11084b75bffcSAndrew Gabbasov pr_err("%s: switch to bus width %d ddr failed\n", 1109577fb131SSeungwon Jeon mmc_hostname(host), 1 << bus_width); 1110577fb131SSeungwon Jeon return err; 1111577fb131SSeungwon Jeon } 1112577fb131SSeungwon Jeon 1113577fb131SSeungwon Jeon /* 1114577fb131SSeungwon Jeon * eMMC cards can support 3.3V to 1.2V i/o (vccq) 1115577fb131SSeungwon Jeon * signaling. 1116577fb131SSeungwon Jeon * 1117577fb131SSeungwon Jeon * EXT_CSD_CARD_TYPE_DDR_1_8V means 3.3V or 1.8V vccq. 1118577fb131SSeungwon Jeon * 1119577fb131SSeungwon Jeon * 1.8V vccq at 3.3V core voltage (vcc) is not required 1120577fb131SSeungwon Jeon * in the JEDEC spec for DDR. 1121577fb131SSeungwon Jeon * 1122312449efSChuanxiao.Dong * Even (e)MMC card can support 3.3v to 1.2v vccq, but not all 1123312449efSChuanxiao.Dong * host controller can support this, like some of the SDHCI 1124312449efSChuanxiao.Dong * controller which connect to an eMMC device. Some of these 1125312449efSChuanxiao.Dong * host controller still needs to use 1.8v vccq for supporting 1126312449efSChuanxiao.Dong * DDR mode. 1127312449efSChuanxiao.Dong * 1128312449efSChuanxiao.Dong * So the sequence will be: 1129312449efSChuanxiao.Dong * if (host and device can both support 1.2v IO) 1130312449efSChuanxiao.Dong * use 1.2v IO; 1131312449efSChuanxiao.Dong * else if (host and device can both support 1.8v IO) 1132312449efSChuanxiao.Dong * use 1.8v IO; 1133312449efSChuanxiao.Dong * so if host and device can only support 3.3v IO, this is the 1134312449efSChuanxiao.Dong * last choice. 1135577fb131SSeungwon Jeon * 1136577fb131SSeungwon Jeon * WARNING: eMMC rules are NOT the same as SD DDR 1137577fb131SSeungwon Jeon */ 113820f921bbSUlf Hansson if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_2V) { 11394e74b6b3SUlf Hansson err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); 114020f921bbSUlf Hansson if (!err) 114120f921bbSUlf Hansson return 0; 114220f921bbSUlf Hansson } 1143577fb131SSeungwon Jeon 114420f921bbSUlf Hansson if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_8V && 114520f921bbSUlf Hansson host->caps & MMC_CAP_1_8V_DDR) 11464e74b6b3SUlf Hansson err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); 1147312449efSChuanxiao.Dong 1148312449efSChuanxiao.Dong /* make sure vccq is 3.3v after switching disaster */ 1149312449efSChuanxiao.Dong if (err) 11504e74b6b3SUlf Hansson err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330); 1151312449efSChuanxiao.Dong 1152577fb131SSeungwon Jeon return err; 1153577fb131SSeungwon Jeon } 1154577fb131SSeungwon Jeon 11550a5b6438SSeungwon Jeon static int mmc_select_hs400(struct mmc_card *card) 11560a5b6438SSeungwon Jeon { 11570a5b6438SSeungwon Jeon struct mmc_host *host = card->host; 115851b12f77SAdrian Hunter unsigned int max_dtr; 11590a5b6438SSeungwon Jeon int err = 0; 1160cc4f414cSAdrian Hunter u8 val; 11610a5b6438SSeungwon Jeon 11620a5b6438SSeungwon Jeon /* 11630a5b6438SSeungwon Jeon * HS400 mode requires 8-bit bus width 11640a5b6438SSeungwon Jeon */ 11650a5b6438SSeungwon Jeon if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 && 11660a5b6438SSeungwon Jeon host->ios.bus_width == MMC_BUS_WIDTH_8)) 11670a5b6438SSeungwon Jeon return 0; 11680a5b6438SSeungwon Jeon 116951b12f77SAdrian Hunter /* Switch card to HS mode */ 1170adb24d42SWenkai Du val = EXT_CSD_TIMING_HS; 11710a5b6438SSeungwon Jeon err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1172cc4f414cSAdrian Hunter EXT_CSD_HS_TIMING, val, 1173aa33ce3cSUlf Hansson card->ext_csd.generic_cmd6_time, 0, 11745e52a168SBean Huo false, true, MMC_CMD_RETRIES); 11750a5b6438SSeungwon Jeon if (err) { 11764b75bffcSAndrew Gabbasov pr_err("%s: switch to high-speed from hs200 failed, err:%d\n", 11770a5b6438SSeungwon Jeon mmc_hostname(host), err); 11780a5b6438SSeungwon Jeon return err; 11790a5b6438SSeungwon Jeon } 11800a5b6438SSeungwon Jeon 1181ba6c7ac3SSimon Horman /* Prepare host to downgrade to HS timing */ 1182ba6c7ac3SSimon Horman if (host->ops->hs400_downgrade) 1183ba6c7ac3SSimon Horman host->ops->hs400_downgrade(host); 1184ba6c7ac3SSimon Horman 118524fdcb37SWolfram Sang /* Set host controller to HS timing */ 1186452f553eSWolfram Sang mmc_set_timing(host, MMC_TIMING_MMC_HS); 118724fdcb37SWolfram Sang 1188649c6059SZiyuan Xu /* Reduce frequency to HS frequency */ 1189649c6059SZiyuan Xu max_dtr = card->ext_csd.hs_max_dtr; 1190649c6059SZiyuan Xu mmc_set_clock(host, max_dtr); 1191649c6059SZiyuan Xu 119260db8a47SUlf Hansson err = mmc_switch_status(card, true); 1193d2302933SAdrian Hunter if (err) 1194d2302933SAdrian Hunter goto out_err; 1195d2302933SAdrian Hunter 1196cc14eec0SYinbo Zhu if (host->ops->hs400_prepare_ddr) 1197cc14eec0SYinbo Zhu host->ops->hs400_prepare_ddr(host); 1198cc14eec0SYinbo Zhu 1199d2302933SAdrian Hunter /* Switch card to DDR */ 12000a5b6438SSeungwon Jeon err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 12010a5b6438SSeungwon Jeon EXT_CSD_BUS_WIDTH, 12020a5b6438SSeungwon Jeon EXT_CSD_DDR_BUS_WIDTH_8, 12030a5b6438SSeungwon Jeon card->ext_csd.generic_cmd6_time); 12040a5b6438SSeungwon Jeon if (err) { 12054b75bffcSAndrew Gabbasov pr_err("%s: switch to bus width for hs400 failed, err:%d\n", 12060a5b6438SSeungwon Jeon mmc_hostname(host), err); 12070a5b6438SSeungwon Jeon return err; 12080a5b6438SSeungwon Jeon } 12090a5b6438SSeungwon Jeon 1210d2302933SAdrian Hunter /* Switch card to HS400 */ 1211cc4f414cSAdrian Hunter val = EXT_CSD_TIMING_HS400 | 1212cc4f414cSAdrian Hunter card->drive_strength << EXT_CSD_DRV_STR_SHIFT; 12130a5b6438SSeungwon Jeon err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1214cc4f414cSAdrian Hunter EXT_CSD_HS_TIMING, val, 1215aa33ce3cSUlf Hansson card->ext_csd.generic_cmd6_time, 0, 12165e52a168SBean Huo false, true, MMC_CMD_RETRIES); 12170a5b6438SSeungwon Jeon if (err) { 12184b75bffcSAndrew Gabbasov pr_err("%s: switch to hs400 failed, err:%d\n", 12190a5b6438SSeungwon Jeon mmc_hostname(host), err); 12200a5b6438SSeungwon Jeon return err; 12210a5b6438SSeungwon Jeon } 12220a5b6438SSeungwon Jeon 1223d2302933SAdrian Hunter /* Set host controller to HS400 timing and frequency */ 12240a5b6438SSeungwon Jeon mmc_set_timing(host, MMC_TIMING_MMC_HS400); 12250a5b6438SSeungwon Jeon mmc_set_bus_speed(card); 12260a5b6438SSeungwon Jeon 1227f614fb60SWenbin Mei if (host->ops->execute_hs400_tuning) { 1228f614fb60SWenbin Mei mmc_retune_disable(host); 1229f614fb60SWenbin Mei err = host->ops->execute_hs400_tuning(host, card); 1230f614fb60SWenbin Mei mmc_retune_enable(host); 1231f614fb60SWenbin Mei if (err) 1232f614fb60SWenbin Mei goto out_err; 1233f614fb60SWenbin Mei } 1234f614fb60SWenbin Mei 1235b0e370b9SWolfram Sang if (host->ops->hs400_complete) 1236b0e370b9SWolfram Sang host->ops->hs400_complete(host); 1237b0e370b9SWolfram Sang 123860db8a47SUlf Hansson err = mmc_switch_status(card, true); 1239d2302933SAdrian Hunter if (err) 1240d2302933SAdrian Hunter goto out_err; 1241d2302933SAdrian Hunter 12420a5b6438SSeungwon Jeon return 0; 1243d2302933SAdrian Hunter 1244d2302933SAdrian Hunter out_err: 1245d2302933SAdrian Hunter pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), 1246d2302933SAdrian Hunter __func__, err); 1247d2302933SAdrian Hunter return err; 12480a5b6438SSeungwon Jeon } 12490a5b6438SSeungwon Jeon 12506376f69dSAdrian Hunter int mmc_hs200_to_hs400(struct mmc_card *card) 12516376f69dSAdrian Hunter { 12526376f69dSAdrian Hunter return mmc_select_hs400(card); 12536376f69dSAdrian Hunter } 12546376f69dSAdrian Hunter 12556376f69dSAdrian Hunter int mmc_hs400_to_hs200(struct mmc_card *card) 12566376f69dSAdrian Hunter { 12576376f69dSAdrian Hunter struct mmc_host *host = card->host; 12586376f69dSAdrian Hunter unsigned int max_dtr; 12596376f69dSAdrian Hunter int err; 1260cc4f414cSAdrian Hunter u8 val; 12616376f69dSAdrian Hunter 12626376f69dSAdrian Hunter /* Reduce frequency to HS */ 12636376f69dSAdrian Hunter max_dtr = card->ext_csd.hs_max_dtr; 12646376f69dSAdrian Hunter mmc_set_clock(host, max_dtr); 12656376f69dSAdrian Hunter 12666376f69dSAdrian Hunter /* Switch HS400 to HS DDR */ 1267adb24d42SWenkai Du val = EXT_CSD_TIMING_HS; 12686376f69dSAdrian Hunter err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, 1269aa33ce3cSUlf Hansson val, card->ext_csd.generic_cmd6_time, 0, 12705e52a168SBean Huo false, true, MMC_CMD_RETRIES); 12716376f69dSAdrian Hunter if (err) 12726376f69dSAdrian Hunter goto out_err; 12736376f69dSAdrian Hunter 127424fdcb37SWolfram Sang if (host->ops->hs400_downgrade) 127524fdcb37SWolfram Sang host->ops->hs400_downgrade(host); 127624fdcb37SWolfram Sang 12776376f69dSAdrian Hunter mmc_set_timing(host, MMC_TIMING_MMC_DDR52); 12786376f69dSAdrian Hunter 127960db8a47SUlf Hansson err = mmc_switch_status(card, true); 12806376f69dSAdrian Hunter if (err) 12816376f69dSAdrian Hunter goto out_err; 12826376f69dSAdrian Hunter 12836376f69dSAdrian Hunter /* Switch HS DDR to HS */ 12846376f69dSAdrian Hunter err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BUS_WIDTH, 12856376f69dSAdrian Hunter EXT_CSD_BUS_WIDTH_8, card->ext_csd.generic_cmd6_time, 12865e52a168SBean Huo 0, false, true, MMC_CMD_RETRIES); 12876376f69dSAdrian Hunter if (err) 12886376f69dSAdrian Hunter goto out_err; 12896376f69dSAdrian Hunter 12906376f69dSAdrian Hunter mmc_set_timing(host, MMC_TIMING_MMC_HS); 12916376f69dSAdrian Hunter 129260db8a47SUlf Hansson err = mmc_switch_status(card, true); 12936376f69dSAdrian Hunter if (err) 12946376f69dSAdrian Hunter goto out_err; 12956376f69dSAdrian Hunter 12966376f69dSAdrian Hunter /* Switch HS to HS200 */ 1297cc4f414cSAdrian Hunter val = EXT_CSD_TIMING_HS200 | 1298cc4f414cSAdrian Hunter card->drive_strength << EXT_CSD_DRV_STR_SHIFT; 12996376f69dSAdrian Hunter err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, 1300aa33ce3cSUlf Hansson val, card->ext_csd.generic_cmd6_time, 0, 13015e52a168SBean Huo false, true, MMC_CMD_RETRIES); 13026376f69dSAdrian Hunter if (err) 13036376f69dSAdrian Hunter goto out_err; 13046376f69dSAdrian Hunter 13056376f69dSAdrian Hunter mmc_set_timing(host, MMC_TIMING_MMC_HS200); 13066376f69dSAdrian Hunter 1307ef3d2322SAdrian Hunter /* 1308ef3d2322SAdrian Hunter * For HS200, CRC errors are not a reliable way to know the switch 1309ef3d2322SAdrian Hunter * failed. If there really is a problem, we would expect tuning will 1310ef3d2322SAdrian Hunter * fail and the result ends up the same. 1311ef3d2322SAdrian Hunter */ 131260db8a47SUlf Hansson err = mmc_switch_status(card, false); 13136376f69dSAdrian Hunter if (err) 13146376f69dSAdrian Hunter goto out_err; 13156376f69dSAdrian Hunter 13166376f69dSAdrian Hunter mmc_set_bus_speed(card); 13176376f69dSAdrian Hunter 1318c8a4e30dSUlf Hansson /* Prepare tuning for HS400 mode. */ 1319c8a4e30dSUlf Hansson if (host->ops->prepare_hs400_tuning) 1320c8a4e30dSUlf Hansson host->ops->prepare_hs400_tuning(host, &host->ios); 1321c8a4e30dSUlf Hansson 13226376f69dSAdrian Hunter return 0; 13236376f69dSAdrian Hunter 13246376f69dSAdrian Hunter out_err: 13256376f69dSAdrian Hunter pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), 13266376f69dSAdrian Hunter __func__, err); 13276376f69dSAdrian Hunter return err; 13286376f69dSAdrian Hunter } 13296376f69dSAdrian Hunter 1330fb458864SChanho Min static void mmc_select_driver_type(struct mmc_card *card) 1331fb458864SChanho Min { 1332be17f1ceSWolfram Sang int card_drv_type, drive_strength, drv_type = 0; 13336186d06cSWolfram Sang int fixed_drv_type = card->host->fixed_drv_type; 1334fb458864SChanho Min 1335fb458864SChanho Min card_drv_type = card->ext_csd.raw_driver_strength | 1336fb458864SChanho Min mmc_driver_type_mask(0); 1337fb458864SChanho Min 13386186d06cSWolfram Sang if (fixed_drv_type >= 0) 13396186d06cSWolfram Sang drive_strength = card_drv_type & mmc_driver_type_mask(fixed_drv_type) 13406186d06cSWolfram Sang ? fixed_drv_type : 0; 13416186d06cSWolfram Sang else 1342fb458864SChanho Min drive_strength = mmc_select_drive_strength(card, 1343fb458864SChanho Min card->ext_csd.hs200_max_dtr, 1344fb458864SChanho Min card_drv_type, &drv_type); 1345fb458864SChanho Min 1346fb458864SChanho Min card->drive_strength = drive_strength; 1347fb458864SChanho Min 1348fb458864SChanho Min if (drv_type) 1349fb458864SChanho Min mmc_set_driver_type(card->host, drv_type); 1350fb458864SChanho Min } 1351fb458864SChanho Min 135281ac2af6SShawn Lin static int mmc_select_hs400es(struct mmc_card *card) 135381ac2af6SShawn Lin { 135481ac2af6SShawn Lin struct mmc_host *host = card->host; 135592ddd959SHaibo Chen int err = -EINVAL; 135681ac2af6SShawn Lin u8 val; 135781ac2af6SShawn Lin 13581720d354SShawn Lin if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400_1_2V) 13594e74b6b3SUlf Hansson err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); 13601720d354SShawn Lin 13611720d354SShawn Lin if (err && card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400_1_8V) 13624e74b6b3SUlf Hansson err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); 13631720d354SShawn Lin 13641720d354SShawn Lin /* If fails try again during next card power cycle */ 13651720d354SShawn Lin if (err) 13661720d354SShawn Lin goto out_err; 13671720d354SShawn Lin 136881ac2af6SShawn Lin err = mmc_select_bus_width(card); 13697f38abf2SHongjie Fang if (err != MMC_BUS_WIDTH_8) { 13707f38abf2SHongjie Fang pr_err("%s: switch to 8bit bus width failed, err:%d\n", 13717f38abf2SHongjie Fang mmc_hostname(host), err); 13727f38abf2SHongjie Fang err = err < 0 ? err : -ENOTSUPP; 137381ac2af6SShawn Lin goto out_err; 13747f38abf2SHongjie Fang } 137581ac2af6SShawn Lin 137681ac2af6SShawn Lin /* Switch card to HS mode */ 137753e60650SUlf Hansson err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 137853e60650SUlf Hansson EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS, 137953e60650SUlf Hansson card->ext_csd.generic_cmd6_time, 0, 13805e52a168SBean Huo false, true, MMC_CMD_RETRIES); 138153e60650SUlf Hansson if (err) { 138253e60650SUlf Hansson pr_err("%s: switch to hs for hs400es failed, err:%d\n", 138353e60650SUlf Hansson mmc_hostname(host), err); 138453e60650SUlf Hansson goto out_err; 138553e60650SUlf Hansson } 138653e60650SUlf Hansson 138753e60650SUlf Hansson mmc_set_timing(host, MMC_TIMING_MMC_HS); 138860db8a47SUlf Hansson err = mmc_switch_status(card, true); 138967d35960SJungseung Lee if (err) 139081ac2af6SShawn Lin goto out_err; 139181ac2af6SShawn Lin 13924f25580fSShawn Lin mmc_set_clock(host, card->ext_csd.hs_max_dtr); 13934f25580fSShawn Lin 139481ac2af6SShawn Lin /* Switch card to DDR with strobe bit */ 139581ac2af6SShawn Lin val = EXT_CSD_DDR_BUS_WIDTH_8 | EXT_CSD_BUS_WIDTH_STROBE; 139681ac2af6SShawn Lin err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 139781ac2af6SShawn Lin EXT_CSD_BUS_WIDTH, 139881ac2af6SShawn Lin val, 139981ac2af6SShawn Lin card->ext_csd.generic_cmd6_time); 140081ac2af6SShawn Lin if (err) { 140181ac2af6SShawn Lin pr_err("%s: switch to bus width for hs400es failed, err:%d\n", 140281ac2af6SShawn Lin mmc_hostname(host), err); 140381ac2af6SShawn Lin goto out_err; 140481ac2af6SShawn Lin } 140581ac2af6SShawn Lin 1406fb458864SChanho Min mmc_select_driver_type(card); 1407fb458864SChanho Min 140881ac2af6SShawn Lin /* Switch card to HS400 */ 140981ac2af6SShawn Lin val = EXT_CSD_TIMING_HS400 | 141081ac2af6SShawn Lin card->drive_strength << EXT_CSD_DRV_STR_SHIFT; 141181ac2af6SShawn Lin err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 141281ac2af6SShawn Lin EXT_CSD_HS_TIMING, val, 1413aa33ce3cSUlf Hansson card->ext_csd.generic_cmd6_time, 0, 14145e52a168SBean Huo false, true, MMC_CMD_RETRIES); 141581ac2af6SShawn Lin if (err) { 141681ac2af6SShawn Lin pr_err("%s: switch to hs400es failed, err:%d\n", 141781ac2af6SShawn Lin mmc_hostname(host), err); 141881ac2af6SShawn Lin goto out_err; 141981ac2af6SShawn Lin } 142081ac2af6SShawn Lin 142181ac2af6SShawn Lin /* Set host controller to HS400 timing and frequency */ 142281ac2af6SShawn Lin mmc_set_timing(host, MMC_TIMING_MMC_HS400); 142381ac2af6SShawn Lin 142481ac2af6SShawn Lin /* Controller enable enhanced strobe function */ 142581ac2af6SShawn Lin host->ios.enhanced_strobe = true; 142681ac2af6SShawn Lin if (host->ops->hs400_enhanced_strobe) 142781ac2af6SShawn Lin host->ops->hs400_enhanced_strobe(host, &host->ios); 142881ac2af6SShawn Lin 142960db8a47SUlf Hansson err = mmc_switch_status(card, true); 143081ac2af6SShawn Lin if (err) 143181ac2af6SShawn Lin goto out_err; 143281ac2af6SShawn Lin 143381ac2af6SShawn Lin return 0; 143481ac2af6SShawn Lin 143581ac2af6SShawn Lin out_err: 143681ac2af6SShawn Lin pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), 143781ac2af6SShawn Lin __func__, err); 143881ac2af6SShawn Lin return err; 143981ac2af6SShawn Lin } 144081ac2af6SShawn Lin 1441577fb131SSeungwon Jeon /* 1442577fb131SSeungwon Jeon * For device supporting HS200 mode, the following sequence 1443577fb131SSeungwon Jeon * should be done before executing the tuning process. 1444577fb131SSeungwon Jeon * 1. set the desired bus width(4-bit or 8-bit, 1-bit is not supported) 1445577fb131SSeungwon Jeon * 2. switch to HS200 mode 1446577fb131SSeungwon Jeon * 3. set the clock to > 52Mhz and <=200MHz 1447577fb131SSeungwon Jeon */ 1448577fb131SSeungwon Jeon static int mmc_select_hs200(struct mmc_card *card) 1449577fb131SSeungwon Jeon { 1450577fb131SSeungwon Jeon struct mmc_host *host = card->host; 1451e51534c8SDong Aisheng unsigned int old_timing, old_signal_voltage; 1452577fb131SSeungwon Jeon int err = -EINVAL; 1453cc4f414cSAdrian Hunter u8 val; 1454577fb131SSeungwon Jeon 1455e51534c8SDong Aisheng old_signal_voltage = host->ios.signal_voltage; 1456577fb131SSeungwon Jeon if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_2V) 14574e74b6b3SUlf Hansson err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); 1458577fb131SSeungwon Jeon 1459577fb131SSeungwon Jeon if (err && card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_8V) 14604e74b6b3SUlf Hansson err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); 1461577fb131SSeungwon Jeon 1462577fb131SSeungwon Jeon /* If fails try again during next card power cycle */ 1463577fb131SSeungwon Jeon if (err) 1464e51534c8SDong Aisheng return err; 1465577fb131SSeungwon Jeon 1466cc4f414cSAdrian Hunter mmc_select_driver_type(card); 1467cc4f414cSAdrian Hunter 1468577fb131SSeungwon Jeon /* 1469577fb131SSeungwon Jeon * Set the bus width(4 or 8) with host's support and 1470577fb131SSeungwon Jeon * switch to HS200 mode if bus width is set successfully. 1471577fb131SSeungwon Jeon */ 1472577fb131SSeungwon Jeon err = mmc_select_bus_width(card); 14738b7be8f2SPeter Griffin if (err > 0) { 1474cc4f414cSAdrian Hunter val = EXT_CSD_TIMING_HS200 | 1475cc4f414cSAdrian Hunter card->drive_strength << EXT_CSD_DRV_STR_SHIFT; 1476577fb131SSeungwon Jeon err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1477cc4f414cSAdrian Hunter EXT_CSD_HS_TIMING, val, 1478aa33ce3cSUlf Hansson card->ext_csd.generic_cmd6_time, 0, 14795e52a168SBean Huo false, true, MMC_CMD_RETRIES); 14801815e61bSAdrian Hunter if (err) 14811815e61bSAdrian Hunter goto err; 14821815e61bSAdrian Hunter old_timing = host->ios.timing; 1483577fb131SSeungwon Jeon mmc_set_timing(host, MMC_TIMING_MMC_HS200); 148408573eafSChaotian Jing 1485ef3d2322SAdrian Hunter /* 1486ef3d2322SAdrian Hunter * For HS200, CRC errors are not a reliable way to know the 1487ef3d2322SAdrian Hunter * switch failed. If there really is a problem, we would expect 1488ef3d2322SAdrian Hunter * tuning will fail and the result ends up the same. 1489ef3d2322SAdrian Hunter */ 149060db8a47SUlf Hansson err = mmc_switch_status(card, false); 1491ef3d2322SAdrian Hunter 14921815e61bSAdrian Hunter /* 14931815e61bSAdrian Hunter * mmc_select_timing() assumes timing has not changed if 14941815e61bSAdrian Hunter * it is a switch error. 14951815e61bSAdrian Hunter */ 14961815e61bSAdrian Hunter if (err == -EBADMSG) 14971815e61bSAdrian Hunter mmc_set_timing(host, old_timing); 14981815e61bSAdrian Hunter } 1499a4924c71SGirish K S err: 1500e51534c8SDong Aisheng if (err) { 1501e51534c8SDong Aisheng /* fall back to the old signal voltage, if fails report error */ 15024e74b6b3SUlf Hansson if (mmc_set_signal_voltage(host, old_signal_voltage)) 1503e51534c8SDong Aisheng err = -EIO; 1504e51534c8SDong Aisheng 15051815e61bSAdrian Hunter pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), 15061815e61bSAdrian Hunter __func__, err); 1507e51534c8SDong Aisheng } 1508a4924c71SGirish K S return err; 1509a4924c71SGirish K S } 1510a4924c71SGirish K S 1511a4924c71SGirish K S /* 151281ac2af6SShawn Lin * Activate High Speed, HS200 or HS400ES mode if supported. 1513577fb131SSeungwon Jeon */ 1514577fb131SSeungwon Jeon static int mmc_select_timing(struct mmc_card *card) 1515577fb131SSeungwon Jeon { 1516577fb131SSeungwon Jeon int err = 0; 1517577fb131SSeungwon Jeon 1518148bcab2SUlf Hansson if (!mmc_can_ext_csd(card)) 1519577fb131SSeungwon Jeon goto bus_speed; 1520577fb131SSeungwon Jeon 15213b6c4728SUlf Hansson if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400ES) { 152281ac2af6SShawn Lin err = mmc_select_hs400es(card); 15233b6c4728SUlf Hansson goto out; 15243b6c4728SUlf Hansson } 15253b6c4728SUlf Hansson 15263b6c4728SUlf Hansson if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200) { 1527577fb131SSeungwon Jeon err = mmc_select_hs200(card); 15283b6c4728SUlf Hansson if (err == -EBADMSG) 15293b6c4728SUlf Hansson card->mmc_avail_type &= ~EXT_CSD_CARD_TYPE_HS200; 15303b6c4728SUlf Hansson else 15313b6c4728SUlf Hansson goto out; 15323b6c4728SUlf Hansson } 15333b6c4728SUlf Hansson 15343b6c4728SUlf Hansson if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS) 1535577fb131SSeungwon Jeon err = mmc_select_hs(card); 1536577fb131SSeungwon Jeon 15373b6c4728SUlf Hansson out: 1538577fb131SSeungwon Jeon if (err && err != -EBADMSG) 1539577fb131SSeungwon Jeon return err; 1540577fb131SSeungwon Jeon 1541577fb131SSeungwon Jeon bus_speed: 1542577fb131SSeungwon Jeon /* 1543577fb131SSeungwon Jeon * Set the bus speed to the selected bus timing. 1544577fb131SSeungwon Jeon * If timing is not selected, backward compatible is the default. 1545577fb131SSeungwon Jeon */ 1546577fb131SSeungwon Jeon mmc_set_bus_speed(card); 15470400ed0aSDong Aisheng return 0; 1548577fb131SSeungwon Jeon } 1549577fb131SSeungwon Jeon 1550577fb131SSeungwon Jeon /* 1551577fb131SSeungwon Jeon * Execute tuning sequence to seek the proper bus operating 15520a5b6438SSeungwon Jeon * conditions for HS200 and HS400, which sends CMD21 to the device. 1553577fb131SSeungwon Jeon */ 1554577fb131SSeungwon Jeon static int mmc_hs200_tuning(struct mmc_card *card) 1555577fb131SSeungwon Jeon { 1556577fb131SSeungwon Jeon struct mmc_host *host = card->host; 1557577fb131SSeungwon Jeon 15580a5b6438SSeungwon Jeon /* 15590a5b6438SSeungwon Jeon * Timing should be adjusted to the HS400 target 15600a5b6438SSeungwon Jeon * operation frequency for tuning process 15610a5b6438SSeungwon Jeon */ 15620a5b6438SSeungwon Jeon if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 && 15630a5b6438SSeungwon Jeon host->ios.bus_width == MMC_BUS_WIDTH_8) 15640a5b6438SSeungwon Jeon if (host->ops->prepare_hs400_tuning) 15650a5b6438SSeungwon Jeon host->ops->prepare_hs400_tuning(host, &host->ios); 15660a5b6438SSeungwon Jeon 156763e415c6SAdrian Hunter return mmc_execute_tuning(card); 1568577fb131SSeungwon Jeon } 1569577fb131SSeungwon Jeon 1570577fb131SSeungwon Jeon /* 15716abaa0c9SPierre Ossman * Handle the detection and initialisation of a card. 15726abaa0c9SPierre Ossman * 15738769392bSDeepak Saxena * In the case of a resume, "oldcard" will contain the card 15746abaa0c9SPierre Ossman * we're trying to reinitialise. 15757ea239d9SPierre Ossman */ 15768c75deaeSPierre Ossman static int mmc_init_card(struct mmc_host *host, u32 ocr, 15776abaa0c9SPierre Ossman struct mmc_card *oldcard) 15787ea239d9SPierre Ossman { 15797ea239d9SPierre Ossman struct mmc_card *card; 1580577fb131SSeungwon Jeon int err; 15817ea239d9SPierre Ossman u32 cid[4]; 1582b676f039SPhilip Rakity u32 rocr; 15837ea239d9SPierre Ossman 1584d84075c8SPierre Ossman WARN_ON(!host->claimed); 15857ea239d9SPierre Ossman 158644669034SStefan Nilsson XK /* Set correct bus mode for MMC before attempting init */ 158744669034SStefan Nilsson XK if (!mmc_host_is_spi(host)) 158844669034SStefan Nilsson XK mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); 158944669034SStefan Nilsson XK 15907ea239d9SPierre Ossman /* 15917ea239d9SPierre Ossman * Since we're changing the OCR value, we seem to 15927ea239d9SPierre Ossman * need to tell some cards to go back to the idle 15937ea239d9SPierre Ossman * state. We wait 1ms to give cards time to 15947ea239d9SPierre Ossman * respond. 1595c3805467SBalaji T K * mmc_go_idle is needed for eMMC that are asleep 15967ea239d9SPierre Ossman */ 15977ea239d9SPierre Ossman mmc_go_idle(host); 15987ea239d9SPierre Ossman 15997ea239d9SPierre Ossman /* The extra bit indicates that we support high capacity */ 1600b676f039SPhilip Rakity err = mmc_send_op_cond(host, ocr | (1 << 30), &rocr); 160117b0429dSPierre Ossman if (err) 16026abaa0c9SPierre Ossman goto err; 16037ea239d9SPierre Ossman 16047ea239d9SPierre Ossman /* 1605af517150SDavid Brownell * For SPI, enable CRC as appropriate. 1606af517150SDavid Brownell */ 1607af517150SDavid Brownell if (mmc_host_is_spi(host)) { 1608af517150SDavid Brownell err = mmc_spi_set_crc(host, use_spi_crc); 1609af517150SDavid Brownell if (err) 1610af517150SDavid Brownell goto err; 1611af517150SDavid Brownell } 1612af517150SDavid Brownell 1613af517150SDavid Brownell /* 16147ea239d9SPierre Ossman * Fetch CID from card. 16157ea239d9SPierre Ossman */ 1616af517150SDavid Brownell err = mmc_send_cid(host, cid); 161717b0429dSPierre Ossman if (err) 16187ea239d9SPierre Ossman goto err; 16197ea239d9SPierre Ossman 16206abaa0c9SPierre Ossman if (oldcard) { 1621adf66a0dSPierre Ossman if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) { 1622099b6481Shongjiefang pr_debug("%s: Perhaps the card was replaced\n", 1623099b6481Shongjiefang mmc_hostname(host)); 1624adf66a0dSPierre Ossman err = -ENOENT; 16256abaa0c9SPierre Ossman goto err; 1626adf66a0dSPierre Ossman } 16276abaa0c9SPierre Ossman 16286abaa0c9SPierre Ossman card = oldcard; 16296abaa0c9SPierre Ossman } else { 16307ea239d9SPierre Ossman /* 16317ea239d9SPierre Ossman * Allocate card structure. 16327ea239d9SPierre Ossman */ 163351ec92e2SPierre Ossman card = mmc_alloc_card(host, &mmc_type); 1634adf66a0dSPierre Ossman if (IS_ERR(card)) { 1635adf66a0dSPierre Ossman err = PTR_ERR(card); 16367ea239d9SPierre Ossman goto err; 1637adf66a0dSPierre Ossman } 16387ea239d9SPierre Ossman 163969041150SUlf Hansson card->ocr = ocr; 16407ea239d9SPierre Ossman card->type = MMC_TYPE_MMC; 16417ea239d9SPierre Ossman card->rca = 1; 16427ea239d9SPierre Ossman memcpy(card->raw_cid, cid, sizeof(card->raw_cid)); 16436abaa0c9SPierre Ossman } 16447ea239d9SPierre Ossman 16457ea239d9SPierre Ossman /* 1646eac86321SDoug Anderson * Call the optional HC's init_card function to handle quirks. 1647eac86321SDoug Anderson */ 1648eac86321SDoug Anderson if (host->ops->init_card) 1649eac86321SDoug Anderson host->ops->init_card(host, card); 1650eac86321SDoug Anderson 1651eac86321SDoug Anderson /* 1652af517150SDavid Brownell * For native busses: set card RCA and quit open drain mode. 16537ea239d9SPierre Ossman */ 1654af517150SDavid Brownell if (!mmc_host_is_spi(host)) { 16557ea239d9SPierre Ossman err = mmc_set_relative_addr(card); 165617b0429dSPierre Ossman if (err) 16577ea239d9SPierre Ossman goto free_card; 16587ea239d9SPierre Ossman 16597ea239d9SPierre Ossman mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL); 1660af517150SDavid Brownell } 16617ea239d9SPierre Ossman 16626abaa0c9SPierre Ossman if (!oldcard) { 16637ea239d9SPierre Ossman /* 16647ea239d9SPierre Ossman * Fetch CSD from card. 16657ea239d9SPierre Ossman */ 16667ea239d9SPierre Ossman err = mmc_send_csd(card, card->raw_csd); 166717b0429dSPierre Ossman if (err) 16687ea239d9SPierre Ossman goto free_card; 16697ea239d9SPierre Ossman 1670bd766312SPierre Ossman err = mmc_decode_csd(card); 1671adf66a0dSPierre Ossman if (err) 1672bd766312SPierre Ossman goto free_card; 1673bd766312SPierre Ossman err = mmc_decode_cid(card); 1674adf66a0dSPierre Ossman if (err) 1675bd766312SPierre Ossman goto free_card; 16766abaa0c9SPierre Ossman } 16777ea239d9SPierre Ossman 16787ea239d9SPierre Ossman /* 16793d705d14SSascha Hauer * handling only for cards supporting DSR and hosts requesting 16803d705d14SSascha Hauer * DSR configuration 16813d705d14SSascha Hauer */ 16823d705d14SSascha Hauer if (card->csd.dsr_imp && host->dsr_req) 16833d705d14SSascha Hauer mmc_set_dsr(host); 16843d705d14SSascha Hauer 16853d705d14SSascha Hauer /* 168689a73cf5SPierre Ossman * Select card, as all following commands rely on that. 16877ea239d9SPierre Ossman */ 1688af517150SDavid Brownell if (!mmc_host_is_spi(host)) { 16897ea239d9SPierre Ossman err = mmc_select_card(card); 169017b0429dSPierre Ossman if (err) 16917ea239d9SPierre Ossman goto free_card; 1692af517150SDavid Brownell } 16937ea239d9SPierre Ossman 16946abaa0c9SPierre Ossman if (!oldcard) { 1695076ec38aSUlf Hansson /* Read extended CSD. */ 1696076ec38aSUlf Hansson err = mmc_read_ext_csd(card); 169717b0429dSPierre Ossman if (err) 16987ea239d9SPierre Ossman goto free_card; 1699b676f039SPhilip Rakity 170087e88659SMasahiro Yamada /* 170187e88659SMasahiro Yamada * If doing byte addressing, check if required to do sector 1702b676f039SPhilip Rakity * addressing. Handle the case of <2GB cards needing sector 1703b676f039SPhilip Rakity * addressing. See section 8.1 JEDEC Standard JED84-A441; 1704b676f039SPhilip Rakity * ocr register has bit 30 set for sector addressing. 1705b676f039SPhilip Rakity */ 170687e88659SMasahiro Yamada if (rocr & BIT(30)) 1707b676f039SPhilip Rakity mmc_card_set_blockaddr(card); 1708b676f039SPhilip Rakity 1709dfe86cbaSAdrian Hunter /* Erase size depends on CSD and Extended CSD */ 1710dfe86cbaSAdrian Hunter mmc_set_erase_size(card); 17116abaa0c9SPierre Ossman } 17127ea239d9SPierre Ossman 1713d2a47176SUlf Hansson /* Enable ERASE_GRP_DEF. This bit is lost after a reset or power off. */ 1714d2a47176SUlf Hansson if (card->ext_csd.rev >= 3) { 1715709de99dSChuanxiao Dong err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1716b23cf0bdSSeungwon Jeon EXT_CSD_ERASE_GROUP_DEF, 1, 1717b23cf0bdSSeungwon Jeon card->ext_csd.generic_cmd6_time); 1718709de99dSChuanxiao Dong 1719709de99dSChuanxiao Dong if (err && err != -EBADMSG) 1720709de99dSChuanxiao Dong goto free_card; 1721709de99dSChuanxiao Dong 1722709de99dSChuanxiao Dong if (err) { 1723709de99dSChuanxiao Dong /* 1724709de99dSChuanxiao Dong * Just disable enhanced area off & sz 1725709de99dSChuanxiao Dong * will try to enable ERASE_GROUP_DEF 1726709de99dSChuanxiao Dong * during next time reinit 1727709de99dSChuanxiao Dong */ 1728709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset = -EINVAL; 1729709de99dSChuanxiao Dong card->ext_csd.enhanced_area_size = -EINVAL; 1730709de99dSChuanxiao Dong } else { 1731709de99dSChuanxiao Dong card->ext_csd.erase_group_def = 1; 1732709de99dSChuanxiao Dong /* 1733709de99dSChuanxiao Dong * enable ERASE_GRP_DEF successfully. 1734709de99dSChuanxiao Dong * This will affect the erase size, so 1735709de99dSChuanxiao Dong * here need to reset erase size 1736709de99dSChuanxiao Dong */ 1737709de99dSChuanxiao Dong mmc_set_erase_size(card); 1738709de99dSChuanxiao Dong } 1739709de99dSChuanxiao Dong } 1740709de99dSChuanxiao Dong 1741709de99dSChuanxiao Dong /* 174241e2a489SPhilip Rakity * Ensure eMMC user default partition is enabled 174341e2a489SPhilip Rakity */ 1744371a689fSAndrei Warkentin if (card->ext_csd.part_config & EXT_CSD_PART_CONFIG_ACC_MASK) { 1745371a689fSAndrei Warkentin card->ext_csd.part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK; 1746371a689fSAndrei Warkentin err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONFIG, 1747371a689fSAndrei Warkentin card->ext_csd.part_config, 1748371a689fSAndrei Warkentin card->ext_csd.part_time); 1749371a689fSAndrei Warkentin if (err && err != -EBADMSG) 1750371a689fSAndrei Warkentin goto free_card; 175141e2a489SPhilip Rakity } 175241e2a489SPhilip Rakity 175341e2a489SPhilip Rakity /* 175443235679SUlf Hansson * Enable power_off_notification byte in the ext_csd register 1755bec8726aSGirish K S */ 175643235679SUlf Hansson if (card->ext_csd.rev >= 6) { 1757bec8726aSGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1758bec8726aSGirish K S EXT_CSD_POWER_OFF_NOTIFICATION, 1759bec8726aSGirish K S EXT_CSD_POWER_ON, 1760bec8726aSGirish K S card->ext_csd.generic_cmd6_time); 1761bec8726aSGirish K S if (err && err != -EBADMSG) 1762bec8726aSGirish K S goto free_card; 1763bec8726aSGirish K S 176496a85d54SGirish K S /* 176596a85d54SGirish K S * The err can be -EBADMSG or 0, 176696a85d54SGirish K S * so check for success and update the flag 176796a85d54SGirish K S */ 1768bec8726aSGirish K S if (!err) 1769e6c08586SUlf Hansson card->ext_csd.power_off_notification = EXT_CSD_POWER_ON; 177096a85d54SGirish K S } 1771bec8726aSGirish K S 177201904ff7SAvri Altman /* set erase_arg */ 177301904ff7SAvri Altman if (mmc_can_discard(card)) 177401904ff7SAvri Altman card->erase_arg = MMC_DISCARD_ARG; 177501904ff7SAvri Altman else if (mmc_can_trim(card)) 177601904ff7SAvri Altman card->erase_arg = MMC_TRIM_ARG; 177701904ff7SAvri Altman else 177801904ff7SAvri Altman card->erase_arg = MMC_ERASE_ARG; 177901904ff7SAvri Altman 1780bec8726aSGirish K S /* 1781577fb131SSeungwon Jeon * Select timing interface 178289a73cf5SPierre Ossman */ 1783577fb131SSeungwon Jeon err = mmc_select_timing(card); 1784577fb131SSeungwon Jeon if (err) 178589a73cf5SPierre Ossman goto free_card; 178689a73cf5SPierre Ossman 1787a4924c71SGirish K S if (mmc_card_hs200(card)) { 178897a7d87eSWolfram Sang host->doing_init_tune = 1; 178997a7d87eSWolfram Sang 1790577fb131SSeungwon Jeon err = mmc_hs200_tuning(card); 1791878dbe42SWolfram Sang if (!err) 17920a5b6438SSeungwon Jeon err = mmc_select_hs400(card); 179397a7d87eSWolfram Sang 179497a7d87eSWolfram Sang host->doing_init_tune = 0; 1795878dbe42SWolfram Sang 1796878dbe42SWolfram Sang if (err) 1797878dbe42SWolfram Sang goto free_card; 1798878dbe42SWolfram Sang 1799773dc118SGuenter Roeck } else if (!mmc_card_hs400es(card)) { 1800577fb131SSeungwon Jeon /* Select the desired bus width optionally */ 1801577fb131SSeungwon Jeon err = mmc_select_bus_width(card); 18023d4ef329SAnssi Hannula if (err > 0 && mmc_card_hs(card)) { 1803577fb131SSeungwon Jeon err = mmc_select_hs_ddr(card); 1804577fb131SSeungwon Jeon if (err) 18054b75bffcSAndrew Gabbasov goto free_card; 180689a73cf5SPierre Ossman } 1807ef0b27d4SAdrian Hunter } 180889a73cf5SPierre Ossman 1809881d1c25SSeungwon Jeon /* 18102385049dSSeungwon Jeon * Choose the power class with selected bus interface 18112385049dSSeungwon Jeon */ 18122385049dSSeungwon Jeon mmc_select_powerclass(card); 18132385049dSSeungwon Jeon 18142385049dSSeungwon Jeon /* 181552d0974eSSubhash Jadavani * Enable HPI feature (if supported) 181652d0974eSSubhash Jadavani */ 181752d0974eSSubhash Jadavani if (card->ext_csd.hpi) { 181852d0974eSSubhash Jadavani err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 181952d0974eSSubhash Jadavani EXT_CSD_HPI_MGMT, 1, 182052d0974eSSubhash Jadavani card->ext_csd.generic_cmd6_time); 182152d0974eSSubhash Jadavani if (err && err != -EBADMSG) 182252d0974eSSubhash Jadavani goto free_card; 182352d0974eSSubhash Jadavani if (err) { 18246606110dSJoe Perches pr_warn("%s: Enabling HPI failed\n", 182552d0974eSSubhash Jadavani mmc_hostname(card->host)); 1826a0741ba4SUlf Hansson card->ext_csd.hpi_en = 0; 1827a0741ba4SUlf Hansson } else { 182852d0974eSSubhash Jadavani card->ext_csd.hpi_en = 1; 182952d0974eSSubhash Jadavani } 1830a0741ba4SUlf Hansson } 183152d0974eSSubhash Jadavani 183252d0974eSSubhash Jadavani /* 1833e3ae3401SUlf Hansson * If cache size is higher than 0, this indicates the existence of cache 1834e3ae3401SUlf Hansson * and it can be turned on. Note that some eMMCs from Micron has been 1835e3ae3401SUlf Hansson * reported to need ~800 ms timeout, while enabling the cache after 1836e3ae3401SUlf Hansson * sudden power failure tests. Let's extend the timeout to a minimum of 1837e3ae3401SUlf Hansson * DEFAULT_CACHE_EN_TIMEOUT_MS and do it for all cards. 1838881d1c25SSeungwon Jeon */ 1839ba9f39a7SUlf Hansson if (card->ext_csd.cache_size > 0) { 1840e3ae3401SUlf Hansson unsigned int timeout_ms = MIN_CACHE_EN_TIMEOUT_MS; 1841e3ae3401SUlf Hansson 1842e3ae3401SUlf Hansson timeout_ms = max(card->ext_csd.generic_cmd6_time, timeout_ms); 1843881d1c25SSeungwon Jeon err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1844e3ae3401SUlf Hansson EXT_CSD_CACHE_CTRL, 1, timeout_ms); 1845881d1c25SSeungwon Jeon if (err && err != -EBADMSG) 1846881d1c25SSeungwon Jeon goto free_card; 1847881d1c25SSeungwon Jeon 1848881d1c25SSeungwon Jeon /* 1849881d1c25SSeungwon Jeon * Only if no error, cache is turned on successfully. 1850881d1c25SSeungwon Jeon */ 18518bc0678bSSeungwon Jeon if (err) { 18526606110dSJoe Perches pr_warn("%s: Cache is supported, but failed to turn on (%d)\n", 18538bc0678bSSeungwon Jeon mmc_hostname(card->host), err); 18548bc0678bSSeungwon Jeon card->ext_csd.cache_ctrl = 0; 18558bc0678bSSeungwon Jeon } else { 18568bc0678bSSeungwon Jeon card->ext_csd.cache_ctrl = 1; 18578bc0678bSSeungwon Jeon } 1858881d1c25SSeungwon Jeon } 1859881d1c25SSeungwon Jeon 1860abd9ac14SSeungwon Jeon /* 186198d4f780SAdrian Hunter * Enable Command Queue if supported. Note that Packed Commands cannot 186298d4f780SAdrian Hunter * be used with Command Queue. 186398d4f780SAdrian Hunter */ 186498d4f780SAdrian Hunter card->ext_csd.cmdq_en = false; 186598d4f780SAdrian Hunter if (card->ext_csd.cmdq_support && host->caps2 & MMC_CAP2_CQE) { 186698d4f780SAdrian Hunter err = mmc_cmdq_enable(card); 186798d4f780SAdrian Hunter if (err && err != -EBADMSG) 186898d4f780SAdrian Hunter goto free_card; 186998d4f780SAdrian Hunter if (err) { 187098d4f780SAdrian Hunter pr_warn("%s: Enabling CMDQ failed\n", 187198d4f780SAdrian Hunter mmc_hostname(card->host)); 187298d4f780SAdrian Hunter card->ext_csd.cmdq_support = false; 187398d4f780SAdrian Hunter card->ext_csd.cmdq_depth = 0; 187498d4f780SAdrian Hunter } 187598d4f780SAdrian Hunter } 187698d4f780SAdrian Hunter /* 18779d4579a8SAdrian Hunter * In some cases (e.g. RPMB or mmc_test), the Command Queue must be 18789d4579a8SAdrian Hunter * disabled for a time, so a flag is needed to indicate to re-enable the 18799d4579a8SAdrian Hunter * Command Queue. 18809d4579a8SAdrian Hunter */ 18819d4579a8SAdrian Hunter card->reenable_cmdq = card->ext_csd.cmdq_en; 18829d4579a8SAdrian Hunter 1883511ce378SBaolin Wang if (host->cqe_ops && !host->cqe_enabled) { 1884f690f440SAdrian Hunter err = host->cqe_ops->cqe_enable(host, card); 1885511ce378SBaolin Wang if (!err) { 1886f690f440SAdrian Hunter host->cqe_enabled = true; 1887511ce378SBaolin Wang 1888511ce378SBaolin Wang if (card->ext_csd.cmdq_en) { 1889f690f440SAdrian Hunter pr_info("%s: Command Queue Engine enabled\n", 1890f690f440SAdrian Hunter mmc_hostname(host)); 1891511ce378SBaolin Wang } else { 1892511ce378SBaolin Wang host->hsq_enabled = true; 1893511ce378SBaolin Wang pr_info("%s: Host Software Queue enabled\n", 1894511ce378SBaolin Wang mmc_hostname(host)); 1895511ce378SBaolin Wang } 1896f690f440SAdrian Hunter } 1897f690f440SAdrian Hunter } 1898f690f440SAdrian Hunter 1899247cfe53SKyle Roeschley if (host->caps2 & MMC_CAP2_AVOID_3_3V && 1900247cfe53SKyle Roeschley host->ios.signal_voltage == MMC_SIGNAL_VOLTAGE_330) { 1901247cfe53SKyle Roeschley pr_err("%s: Host failed to negotiate down from 3.3V\n", 1902247cfe53SKyle Roeschley mmc_hostname(host)); 1903247cfe53SKyle Roeschley err = -EINVAL; 1904247cfe53SKyle Roeschley goto free_card; 1905247cfe53SKyle Roeschley } 1906247cfe53SKyle Roeschley 19076abaa0c9SPierre Ossman if (!oldcard) 19087ea239d9SPierre Ossman host->card = card; 19097ea239d9SPierre Ossman 191017b0429dSPierre Ossman return 0; 19116abaa0c9SPierre Ossman 19126abaa0c9SPierre Ossman free_card: 19136abaa0c9SPierre Ossman if (!oldcard) 19146abaa0c9SPierre Ossman mmc_remove_card(card); 19156abaa0c9SPierre Ossman err: 1916adf66a0dSPierre Ossman return err; 19176abaa0c9SPierre Ossman } 19186abaa0c9SPierre Ossman 191907a68216SUlf Hansson static int mmc_can_sleep(struct mmc_card *card) 192007a68216SUlf Hansson { 1921783667ccSYue Hu return card->ext_csd.rev >= 3; 192207a68216SUlf Hansson } 192307a68216SUlf Hansson 19246fa79651SUlf Hansson static int mmc_sleep_busy_cb(void *cb_data, bool *busy) 19256fa79651SUlf Hansson { 19266fa79651SUlf Hansson struct mmc_host *host = cb_data; 19276fa79651SUlf Hansson 19286fa79651SUlf Hansson *busy = host->ops->card_busy(host); 19296fa79651SUlf Hansson return 0; 19306fa79651SUlf Hansson } 19316fa79651SUlf Hansson 193207a68216SUlf Hansson static int mmc_sleep(struct mmc_host *host) 193307a68216SUlf Hansson { 1934c7836d15SMasahiro Yamada struct mmc_command cmd = {}; 193507a68216SUlf Hansson struct mmc_card *card = host->card; 1936cb962e04SUlf Hansson unsigned int timeout_ms = DIV_ROUND_UP(card->ext_csd.sa_timeout, 10000); 1937e62f1e0bSUlf Hansson bool use_r1b_resp; 193807a68216SUlf Hansson int err; 193907a68216SUlf Hansson 1940436f8daaSAdrian Hunter /* Re-tuning can't be done once the card is deselected */ 1941436f8daaSAdrian Hunter mmc_retune_hold(host); 1942436f8daaSAdrian Hunter 194307a68216SUlf Hansson err = mmc_deselect_cards(host); 194407a68216SUlf Hansson if (err) 1945436f8daaSAdrian Hunter goto out_release; 194607a68216SUlf Hansson 194707a68216SUlf Hansson cmd.opcode = MMC_SLEEP_AWAKE; 194807a68216SUlf Hansson cmd.arg = card->rca << 16; 194907a68216SUlf Hansson cmd.arg |= 1 << 15; 1950e62f1e0bSUlf Hansson use_r1b_resp = mmc_prepare_busy_cmd(host, &cmd, timeout_ms); 1951cb962e04SUlf Hansson 195207a68216SUlf Hansson err = mmc_wait_for_cmd(host, &cmd, 0); 195307a68216SUlf Hansson if (err) 1954436f8daaSAdrian Hunter goto out_release; 195507a68216SUlf Hansson 195607a68216SUlf Hansson /* 19576fa79651SUlf Hansson * If the host does not wait while the card signals busy, then we can 19586fa79651SUlf Hansson * try to poll, but only if the host supports HW polling, as the 19596fa79651SUlf Hansson * SEND_STATUS cmd is not allowed. If we can't poll, then we simply need 19606fa79651SUlf Hansson * to wait the sleep/awake timeout. 196107a68216SUlf Hansson */ 19626fa79651SUlf Hansson if (host->caps & MMC_CAP_WAIT_WHILE_BUSY && use_r1b_resp) 19636fa79651SUlf Hansson goto out_release; 19646fa79651SUlf Hansson 19656fa79651SUlf Hansson if (!host->ops->card_busy) { 1966cb962e04SUlf Hansson mmc_delay(timeout_ms); 19676fa79651SUlf Hansson goto out_release; 19686fa79651SUlf Hansson } 19696fa79651SUlf Hansson 19701760fdb6SUlf Hansson err = __mmc_poll_for_busy(host, 0, timeout_ms, &mmc_sleep_busy_cb, host); 197107a68216SUlf Hansson 1972436f8daaSAdrian Hunter out_release: 1973436f8daaSAdrian Hunter mmc_retune_release(host); 197407a68216SUlf Hansson return err; 197507a68216SUlf Hansson } 197607a68216SUlf Hansson 1977e6c08586SUlf Hansson static int mmc_can_poweroff_notify(const struct mmc_card *card) 1978e6c08586SUlf Hansson { 1979e6c08586SUlf Hansson return card && 1980e6c08586SUlf Hansson mmc_card_mmc(card) && 1981e6c08586SUlf Hansson (card->ext_csd.power_off_notification == EXT_CSD_POWER_ON); 1982e6c08586SUlf Hansson } 1983e6c08586SUlf Hansson 1984e6c08586SUlf Hansson static int mmc_poweroff_notify(struct mmc_card *card, unsigned int notify_type) 1985e6c08586SUlf Hansson { 1986e6c08586SUlf Hansson unsigned int timeout = card->ext_csd.generic_cmd6_time; 1987e6c08586SUlf Hansson int err; 1988e6c08586SUlf Hansson 1989e6c08586SUlf Hansson /* Use EXT_CSD_POWER_OFF_SHORT as default notification type. */ 1990e6c08586SUlf Hansson if (notify_type == EXT_CSD_POWER_OFF_LONG) 1991e6c08586SUlf Hansson timeout = card->ext_csd.power_off_longtime; 1992e6c08586SUlf Hansson 1993878e200bSUlf Hansson err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1994e6c08586SUlf Hansson EXT_CSD_POWER_OFF_NOTIFICATION, 19955e52a168SBean Huo notify_type, timeout, 0, false, false, MMC_CMD_RETRIES); 1996e6c08586SUlf Hansson if (err) 1997e6c08586SUlf Hansson pr_err("%s: Power Off Notification timed out, %u\n", 1998e6c08586SUlf Hansson mmc_hostname(card->host), timeout); 1999e6c08586SUlf Hansson 2000e6c08586SUlf Hansson /* Disable the power off notification after the switch operation. */ 2001e6c08586SUlf Hansson card->ext_csd.power_off_notification = EXT_CSD_NO_POWER_NOTIFICATION; 2002e6c08586SUlf Hansson 2003e6c08586SUlf Hansson return err; 2004e6c08586SUlf Hansson } 2005e6c08586SUlf Hansson 20066abaa0c9SPierre Ossman /* 20076abaa0c9SPierre Ossman * Host is being removed. Free up the current card. 20086abaa0c9SPierre Ossman */ 20096abaa0c9SPierre Ossman static void mmc_remove(struct mmc_host *host) 20106abaa0c9SPierre Ossman { 20116abaa0c9SPierre Ossman mmc_remove_card(host->card); 20126abaa0c9SPierre Ossman host->card = NULL; 20136abaa0c9SPierre Ossman } 20146abaa0c9SPierre Ossman 20156abaa0c9SPierre Ossman /* 2016d3049504SAdrian Hunter * Card detection - card is alive. 2017d3049504SAdrian Hunter */ 2018d3049504SAdrian Hunter static int mmc_alive(struct mmc_host *host) 2019d3049504SAdrian Hunter { 2020d3049504SAdrian Hunter return mmc_send_status(host->card, NULL); 2021d3049504SAdrian Hunter } 2022d3049504SAdrian Hunter 2023d3049504SAdrian Hunter /* 20246abaa0c9SPierre Ossman * Card detection callback from host. 20256abaa0c9SPierre Ossman */ 20266abaa0c9SPierre Ossman static void mmc_detect(struct mmc_host *host) 20276abaa0c9SPierre Ossman { 20286abaa0c9SPierre Ossman int err; 20296abaa0c9SPierre Ossman 20306c0cedd1SAdrian Hunter mmc_get_card(host->card, NULL); 20316abaa0c9SPierre Ossman 20326abaa0c9SPierre Ossman /* 20336abaa0c9SPierre Ossman * Just check if our card has been removed. 20346abaa0c9SPierre Ossman */ 2035d3049504SAdrian Hunter err = _mmc_detect_card_removed(host); 20366abaa0c9SPierre Ossman 20376c0cedd1SAdrian Hunter mmc_put_card(host->card, NULL); 20387ea239d9SPierre Ossman 203917b0429dSPierre Ossman if (err) { 20404101c16aSPierre Ossman mmc_remove(host); 20416abaa0c9SPierre Ossman 20426abaa0c9SPierre Ossman mmc_claim_host(host); 20436abaa0c9SPierre Ossman mmc_detach_bus(host); 20447f7e4129SUlf Hansson mmc_power_off(host); 20456abaa0c9SPierre Ossman mmc_release_host(host); 20466abaa0c9SPierre Ossman } 20476abaa0c9SPierre Ossman } 20486abaa0c9SPierre Ossman 204997fce126SAvri Altman static bool _mmc_cache_enabled(struct mmc_host *host) 205097fce126SAvri Altman { 205197fce126SAvri Altman return host->card->ext_csd.cache_size > 0 && 205297fce126SAvri Altman host->card->ext_csd.cache_ctrl & 1; 205397fce126SAvri Altman } 205497fce126SAvri Altman 20558ae11edeSUlf Hansson /* 20568ae11edeSUlf Hansson * Flush the internal cache of the eMMC to non-volatile storage. 20578ae11edeSUlf Hansson */ 20588ae11edeSUlf Hansson static int _mmc_flush_cache(struct mmc_host *host) 20598ae11edeSUlf Hansson { 20608ae11edeSUlf Hansson int err = 0; 20618ae11edeSUlf Hansson 20628ae11edeSUlf Hansson if (_mmc_cache_enabled(host)) { 20638ae11edeSUlf Hansson err = mmc_switch(host->card, EXT_CSD_CMD_SET_NORMAL, 20648ae11edeSUlf Hansson EXT_CSD_FLUSH_CACHE, 1, 20658ae11edeSUlf Hansson CACHE_FLUSH_TIMEOUT_MS); 20668ae11edeSUlf Hansson if (err) 20678ae11edeSUlf Hansson pr_err("%s: cache flush error %d\n", 20688ae11edeSUlf Hansson mmc_hostname(host), err); 20698ae11edeSUlf Hansson } 20708ae11edeSUlf Hansson 20718ae11edeSUlf Hansson return err; 20728ae11edeSUlf Hansson } 20738ae11edeSUlf Hansson 207403d071fcSUlf Hansson static int _mmc_suspend(struct mmc_host *host, bool is_suspend) 20756abaa0c9SPierre Ossman { 2076c3805467SBalaji T K int err = 0; 207703d071fcSUlf Hansson unsigned int notify_type = is_suspend ? EXT_CSD_POWER_OFF_SHORT : 207803d071fcSUlf Hansson EXT_CSD_POWER_OFF_LONG; 2079c3805467SBalaji T K 20806abaa0c9SPierre Ossman mmc_claim_host(host); 2081881d926dSMaya Erez 20829ec775f7SUlf Hansson if (mmc_card_suspended(host->card)) 20839ec775f7SUlf Hansson goto out; 20849ec775f7SUlf Hansson 20858ae11edeSUlf Hansson err = _mmc_flush_cache(host); 2086881d926dSMaya Erez if (err) 2087881d926dSMaya Erez goto out; 2088881d926dSMaya Erez 208943235679SUlf Hansson if (mmc_can_poweroff_notify(host->card) && 2090ec02760bSYoshihiro Shimoda ((host->caps2 & MMC_CAP2_FULL_PWR_CYCLE) || !is_suspend || 2091ec02760bSYoshihiro Shimoda (host->caps2 & MMC_CAP2_FULL_PWR_CYCLE_IN_SUSPEND))) 209203d071fcSUlf Hansson err = mmc_poweroff_notify(host->card, notify_type); 209307a68216SUlf Hansson else if (mmc_can_sleep(host->card)) 209407a68216SUlf Hansson err = mmc_sleep(host); 2095e6c08586SUlf Hansson else if (!mmc_host_is_spi(host)) 209685e727edSJaehoon Chung err = mmc_deselect_cards(host); 209795cdfb72SNicolas Pitre 20989ec775f7SUlf Hansson if (!err) { 209974590263SUlf Hansson mmc_power_off(host); 21009ec775f7SUlf Hansson mmc_card_set_suspended(host->card); 21019ec775f7SUlf Hansson } 2102881d926dSMaya Erez out: 2103881d926dSMaya Erez mmc_release_host(host); 2104c3805467SBalaji T K return err; 21056abaa0c9SPierre Ossman } 21066abaa0c9SPierre Ossman 21076abaa0c9SPierre Ossman /* 21080cb403a2SUlf Hansson * Suspend callback 210903d071fcSUlf Hansson */ 211003d071fcSUlf Hansson static int mmc_suspend(struct mmc_host *host) 211103d071fcSUlf Hansson { 21120cb403a2SUlf Hansson int err; 21130cb403a2SUlf Hansson 21140cb403a2SUlf Hansson err = _mmc_suspend(host, true); 21150cb403a2SUlf Hansson if (!err) { 21160cb403a2SUlf Hansson pm_runtime_disable(&host->card->dev); 21170cb403a2SUlf Hansson pm_runtime_set_suspended(&host->card->dev); 21180cb403a2SUlf Hansson } 21190cb403a2SUlf Hansson 21200cb403a2SUlf Hansson return err; 212103d071fcSUlf Hansson } 212203d071fcSUlf Hansson 212303d071fcSUlf Hansson /* 21246abaa0c9SPierre Ossman * This function tries to determine if the same card is still present 21256abaa0c9SPierre Ossman * and, if so, restore all state to it. 21266abaa0c9SPierre Ossman */ 21270cb403a2SUlf Hansson static int _mmc_resume(struct mmc_host *host) 21286abaa0c9SPierre Ossman { 21299ec775f7SUlf Hansson int err = 0; 21306abaa0c9SPierre Ossman 21316abaa0c9SPierre Ossman mmc_claim_host(host); 21329ec775f7SUlf Hansson 21339ec775f7SUlf Hansson if (!mmc_card_suspended(host->card)) 21349ec775f7SUlf Hansson goto out; 21359ec775f7SUlf Hansson 213669041150SUlf Hansson mmc_power_up(host, host->card->ocr); 213769041150SUlf Hansson err = mmc_init_card(host, host->card->ocr, host->card); 21389ec775f7SUlf Hansson mmc_card_clr_suspended(host->card); 21392986d0bfSPierre Ossman 21409ec775f7SUlf Hansson out: 21419ec775f7SUlf Hansson mmc_release_host(host); 214295cdfb72SNicolas Pitre return err; 21436abaa0c9SPierre Ossman } 21446abaa0c9SPierre Ossman 21459ec775f7SUlf Hansson /* 21469ec775f7SUlf Hansson * Shutdown callback 21479ec775f7SUlf Hansson */ 21489ec775f7SUlf Hansson static int mmc_shutdown(struct mmc_host *host) 21499ec775f7SUlf Hansson { 21509ec775f7SUlf Hansson int err = 0; 21519ec775f7SUlf Hansson 21529ec775f7SUlf Hansson /* 21539ec775f7SUlf Hansson * In a specific case for poweroff notify, we need to resume the card 21549ec775f7SUlf Hansson * before we can shutdown it properly. 21559ec775f7SUlf Hansson */ 21569ec775f7SUlf Hansson if (mmc_can_poweroff_notify(host->card) && 21579ec775f7SUlf Hansson !(host->caps2 & MMC_CAP2_FULL_PWR_CYCLE)) 21580cb403a2SUlf Hansson err = _mmc_resume(host); 21599ec775f7SUlf Hansson 21609ec775f7SUlf Hansson if (!err) 21619ec775f7SUlf Hansson err = _mmc_suspend(host, false); 21629ec775f7SUlf Hansson 21639ec775f7SUlf Hansson return err; 21649ec775f7SUlf Hansson } 2165c4d770d7SUlf Hansson 2166c4d770d7SUlf Hansson /* 21670cb403a2SUlf Hansson * Callback for resume. 21680cb403a2SUlf Hansson */ 21690cb403a2SUlf Hansson static int mmc_resume(struct mmc_host *host) 21700cb403a2SUlf Hansson { 21710cb403a2SUlf Hansson pm_runtime_enable(&host->card->dev); 2172c29536e8SUlf Hansson return 0; 21730cb403a2SUlf Hansson } 21740cb403a2SUlf Hansson 21750cb403a2SUlf Hansson /* 2176c4d770d7SUlf Hansson * Callback for runtime_suspend. 2177c4d770d7SUlf Hansson */ 2178c4d770d7SUlf Hansson static int mmc_runtime_suspend(struct mmc_host *host) 2179c4d770d7SUlf Hansson { 2180c4d770d7SUlf Hansson int err; 2181c4d770d7SUlf Hansson 2182c4d770d7SUlf Hansson if (!(host->caps & MMC_CAP_AGGRESSIVE_PM)) 2183c4d770d7SUlf Hansson return 0; 2184c4d770d7SUlf Hansson 21850cb403a2SUlf Hansson err = _mmc_suspend(host, true); 21860cc81a8cSUlf Hansson if (err) 2187f42cf8d6SMasanari Iida pr_err("%s: error %d doing aggressive suspend\n", 2188c4d770d7SUlf Hansson mmc_hostname(host), err); 2189c4d770d7SUlf Hansson 2190c4d770d7SUlf Hansson return err; 2191c4d770d7SUlf Hansson } 2192c4d770d7SUlf Hansson 2193c4d770d7SUlf Hansson /* 2194c4d770d7SUlf Hansson * Callback for runtime_resume. 2195c4d770d7SUlf Hansson */ 2196c4d770d7SUlf Hansson static int mmc_runtime_resume(struct mmc_host *host) 2197c4d770d7SUlf Hansson { 2198c4d770d7SUlf Hansson int err; 2199c4d770d7SUlf Hansson 22000cb403a2SUlf Hansson err = _mmc_resume(host); 2201520322d9SAdrian Hunter if (err && err != -ENOMEDIUM) 2202c29536e8SUlf Hansson pr_err("%s: error %d doing runtime resume\n", 2203c4d770d7SUlf Hansson mmc_hostname(host), err); 2204c4d770d7SUlf Hansson 2205c4d770d7SUlf Hansson return 0; 2206c4d770d7SUlf Hansson } 2207c4d770d7SUlf Hansson 220888bed3a6SUlf Hansson static int mmc_can_reset(struct mmc_card *card) 2209f855a371SJohan Rudholm { 2210f855a371SJohan Rudholm u8 rst_n_function; 2211f855a371SJohan Rudholm 2212f855a371SJohan Rudholm rst_n_function = card->ext_csd.rst_n_function; 2213f855a371SJohan Rudholm if ((rst_n_function & EXT_CSD_RST_N_EN_MASK) != EXT_CSD_RST_N_ENABLED) 2214f855a371SJohan Rudholm return 0; 2215f855a371SJohan Rudholm return 1; 2216f855a371SJohan Rudholm } 2217f855a371SJohan Rudholm 22183a3db603SUlf Hansson static int _mmc_hw_reset(struct mmc_host *host) 2219f855a371SJohan Rudholm { 2220f855a371SJohan Rudholm struct mmc_card *card = host->card; 2221f855a371SJohan Rudholm 2222437db4c6SAdrian Hunter /* 2223437db4c6SAdrian Hunter * In the case of recovery, we can't expect flushing the cache to work 2224437db4c6SAdrian Hunter * always, but we have a go and ignore errors. 2225437db4c6SAdrian Hunter */ 22268ae11edeSUlf Hansson _mmc_flush_cache(host); 2227437db4c6SAdrian Hunter 2228*32f18e59SWolfram Sang if ((host->caps & MMC_CAP_HW_RESET) && host->ops->card_hw_reset && 22294e6c7178SGwendal Grignou mmc_can_reset(card)) { 22304e6c7178SGwendal Grignou /* If the card accept RST_n signal, send it. */ 2231f855a371SJohan Rudholm mmc_set_clock(host, host->f_init); 2232*32f18e59SWolfram Sang host->ops->card_hw_reset(host); 2233f855a371SJohan Rudholm /* Set initial state and call mmc_set_ios */ 2234f855a371SJohan Rudholm mmc_set_initial_state(host); 22354e6c7178SGwendal Grignou } else { 22364e6c7178SGwendal Grignou /* Do a brute force power cycle */ 22374e6c7178SGwendal Grignou mmc_power_cycle(host, card->ocr); 223852c8212dSUlf Hansson mmc_pwrseq_reset(host); 22394e6c7178SGwendal Grignou } 2240364549ddSUlf Hansson return mmc_init_card(host, card->ocr, card); 2241f855a371SJohan Rudholm } 2242f855a371SJohan Rudholm 22439feae246SAdrian Hunter static const struct mmc_bus_ops mmc_ops = { 22449feae246SAdrian Hunter .remove = mmc_remove, 22459feae246SAdrian Hunter .detect = mmc_detect, 22469feae246SAdrian Hunter .suspend = mmc_suspend, 22479feae246SAdrian Hunter .resume = mmc_resume, 2248c4d770d7SUlf Hansson .runtime_suspend = mmc_runtime_suspend, 2249c4d770d7SUlf Hansson .runtime_resume = mmc_runtime_resume, 2250d3049504SAdrian Hunter .alive = mmc_alive, 2251486fdbbcSUlf Hansson .shutdown = mmc_shutdown, 22523a3db603SUlf Hansson .hw_reset = _mmc_hw_reset, 225397fce126SAvri Altman .cache_enabled = _mmc_cache_enabled, 22548ae11edeSUlf Hansson .flush_cache = _mmc_flush_cache, 22559feae246SAdrian Hunter }; 22569feae246SAdrian Hunter 22576abaa0c9SPierre Ossman /* 22586abaa0c9SPierre Ossman * Starting point for MMC card init. 22596abaa0c9SPierre Ossman */ 2260807e8e40SAndy Ross int mmc_attach_mmc(struct mmc_host *host) 22616abaa0c9SPierre Ossman { 22626abaa0c9SPierre Ossman int err; 226369041150SUlf Hansson u32 ocr, rocr; 22646abaa0c9SPierre Ossman 2265d84075c8SPierre Ossman WARN_ON(!host->claimed); 22666abaa0c9SPierre Ossman 226744669034SStefan Nilsson XK /* Set correct bus mode for MMC before attempting attach */ 226844669034SStefan Nilsson XK if (!mmc_host_is_spi(host)) 226944669034SStefan Nilsson XK mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); 227044669034SStefan Nilsson XK 2271807e8e40SAndy Ross err = mmc_send_op_cond(host, 0, &ocr); 2272807e8e40SAndy Ross if (err) 2273807e8e40SAndy Ross return err; 2274807e8e40SAndy Ross 22752501c917SUlf Hansson mmc_attach_bus(host, &mmc_ops); 22768f230f45STakashi Iwai if (host->ocr_avail_mmc) 22778f230f45STakashi Iwai host->ocr_avail = host->ocr_avail_mmc; 22786abaa0c9SPierre Ossman 22796abaa0c9SPierre Ossman /* 2280af517150SDavid Brownell * We need to get OCR a different way for SPI. 2281af517150SDavid Brownell */ 2282af517150SDavid Brownell if (mmc_host_is_spi(host)) { 2283af517150SDavid Brownell err = mmc_spi_read_ocr(host, 1, &ocr); 2284af517150SDavid Brownell if (err) 2285af517150SDavid Brownell goto err; 2286af517150SDavid Brownell } 2287af517150SDavid Brownell 228869041150SUlf Hansson rocr = mmc_select_voltage(host, ocr); 22896abaa0c9SPierre Ossman 22906abaa0c9SPierre Ossman /* 22916abaa0c9SPierre Ossman * Can we support the voltage of the card? 22926abaa0c9SPierre Ossman */ 229369041150SUlf Hansson if (!rocr) { 2294109b5bedSPierre Ossman err = -EINVAL; 22956abaa0c9SPierre Ossman goto err; 2296109b5bedSPierre Ossman } 22976abaa0c9SPierre Ossman 22986abaa0c9SPierre Ossman /* 22996abaa0c9SPierre Ossman * Detect and init the card. 23006abaa0c9SPierre Ossman */ 230169041150SUlf Hansson err = mmc_init_card(host, rocr, NULL); 230217b0429dSPierre Ossman if (err) 23036abaa0c9SPierre Ossman goto err; 23046abaa0c9SPierre Ossman 23056abaa0c9SPierre Ossman mmc_release_host(host); 23064101c16aSPierre Ossman err = mmc_add_card(host->card); 23077ea239d9SPierre Ossman if (err) 23082986d0bfSPierre Ossman goto remove_card; 23097ea239d9SPierre Ossman 23102860d060SSergei Shtylyov mmc_claim_host(host); 23117ea239d9SPierre Ossman return 0; 23127ea239d9SPierre Ossman 23132986d0bfSPierre Ossman remove_card: 23146abaa0c9SPierre Ossman mmc_remove_card(host->card); 23152986d0bfSPierre Ossman mmc_claim_host(host); 2316807e8e40SAndy Ross host->card = NULL; 23177ea239d9SPierre Ossman err: 23187ea239d9SPierre Ossman mmc_detach_bus(host); 23197ea239d9SPierre Ossman 2320a3c76eb9SGirish K S pr_err("%s: error %d whilst initialising MMC card\n", 2321109b5bedSPierre Ossman mmc_hostname(host), err); 2322109b5bedSPierre Ossman 2323adf66a0dSPierre Ossman return err; 23247ea239d9SPierre Ossman } 2325