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> 15ac9d2555SLinus Walleij #include <linux/random.h> 16f5d8a5feSSergey Shtylyov #include <linux/sysfs.h> 177ea239d9SPierre Ossman 187ea239d9SPierre Ossman #include <linux/mmc/host.h> 197ea239d9SPierre Ossman #include <linux/mmc/card.h> 207ea239d9SPierre Ossman #include <linux/mmc/mmc.h> 217ea239d9SPierre Ossman 227ea239d9SPierre Ossman #include "core.h" 234facdde1SUlf Hansson #include "card.h" 24436f8daaSAdrian Hunter #include "host.h" 254101c16aSPierre Ossman #include "bus.h" 267ea239d9SPierre Ossman #include "mmc_ops.h" 2728fc64afSShawn Lin #include "quirks.h" 284c4cb171SPhilip Rakity #include "sd_ops.h" 2952c8212dSUlf Hansson #include "pwrseq.h" 307ea239d9SPierre Ossman 31fe1b5700SUlf Hansson #define DEFAULT_CMD6_TIMEOUT_MS 500 32e3ae3401SUlf Hansson #define MIN_CACHE_EN_TIMEOUT_MS 1600 338ae11edeSUlf Hansson #define CACHE_FLUSH_TIMEOUT_MS 30000 /* 30s */ 34fe1b5700SUlf Hansson 357ea239d9SPierre Ossman static const unsigned int tran_exp[] = { 367ea239d9SPierre Ossman 10000, 100000, 1000000, 10000000, 377ea239d9SPierre Ossman 0, 0, 0, 0 387ea239d9SPierre Ossman }; 397ea239d9SPierre Ossman 407ea239d9SPierre Ossman static const unsigned char tran_mant[] = { 417ea239d9SPierre Ossman 0, 10, 12, 13, 15, 20, 25, 30, 427ea239d9SPierre Ossman 35, 40, 45, 50, 55, 60, 70, 80, 437ea239d9SPierre Ossman }; 447ea239d9SPierre Ossman 454406ae21SShawn Lin static const unsigned int taac_exp[] = { 467ea239d9SPierre Ossman 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, 477ea239d9SPierre Ossman }; 487ea239d9SPierre Ossman 494406ae21SShawn Lin static const unsigned int taac_mant[] = { 507ea239d9SPierre Ossman 0, 10, 12, 13, 15, 20, 25, 30, 517ea239d9SPierre Ossman 35, 40, 45, 50, 55, 60, 70, 80, 527ea239d9SPierre Ossman }; 537ea239d9SPierre Ossman 547ea239d9SPierre Ossman #define UNSTUFF_BITS(resp,start,size) \ 557ea239d9SPierre Ossman ({ \ 567ea239d9SPierre Ossman const int __size = size; \ 577ea239d9SPierre Ossman const u32 __mask = (__size < 32 ? 1 << __size : 0) - 1; \ 587ea239d9SPierre Ossman const int __off = 3 - ((start) / 32); \ 597ea239d9SPierre Ossman const int __shft = (start) & 31; \ 607ea239d9SPierre Ossman u32 __res; \ 617ea239d9SPierre Ossman \ 627ea239d9SPierre Ossman __res = resp[__off] >> __shft; \ 637ea239d9SPierre Ossman if (__size + __shft > 32) \ 647ea239d9SPierre Ossman __res |= resp[__off-1] << ((32 - __shft) % 32); \ 657ea239d9SPierre Ossman __res & __mask; \ 667ea239d9SPierre Ossman }) 677ea239d9SPierre Ossman 687ea239d9SPierre Ossman /* 697ea239d9SPierre Ossman * Given the decoded CSD structure, decode the raw CID to our CID structure. 707ea239d9SPierre Ossman */ 71bd766312SPierre Ossman static int mmc_decode_cid(struct mmc_card *card) 727ea239d9SPierre Ossman { 737ea239d9SPierre Ossman u32 *resp = card->raw_cid; 747ea239d9SPierre Ossman 757ea239d9SPierre Ossman /* 76ac9d2555SLinus Walleij * Add the raw card ID (cid) data to the entropy pool. It doesn't 77ac9d2555SLinus Walleij * matter that not all of it is unique, it's just bonus entropy. 78ac9d2555SLinus Walleij */ 79ac9d2555SLinus Walleij add_device_randomness(&card->raw_cid, sizeof(card->raw_cid)); 80ac9d2555SLinus Walleij 81ac9d2555SLinus Walleij /* 827ea239d9SPierre Ossman * The selection of the format here is based upon published 837ea239d9SPierre Ossman * specs from sandisk and from what people have reported. 847ea239d9SPierre Ossman */ 857ea239d9SPierre Ossman switch (card->csd.mmca_vsn) { 867ea239d9SPierre Ossman case 0: /* MMC v1.0 - v1.2 */ 877ea239d9SPierre Ossman case 1: /* MMC v1.4 */ 887ea239d9SPierre Ossman card->cid.manfid = UNSTUFF_BITS(resp, 104, 24); 897ea239d9SPierre Ossman card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); 907ea239d9SPierre Ossman card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); 917ea239d9SPierre Ossman card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); 927ea239d9SPierre Ossman card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); 937ea239d9SPierre Ossman card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); 947ea239d9SPierre Ossman card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); 957ea239d9SPierre Ossman card->cid.prod_name[6] = UNSTUFF_BITS(resp, 48, 8); 967ea239d9SPierre Ossman card->cid.hwrev = UNSTUFF_BITS(resp, 44, 4); 977ea239d9SPierre Ossman card->cid.fwrev = UNSTUFF_BITS(resp, 40, 4); 987ea239d9SPierre Ossman card->cid.serial = UNSTUFF_BITS(resp, 16, 24); 997ea239d9SPierre Ossman card->cid.month = UNSTUFF_BITS(resp, 12, 4); 1007ea239d9SPierre Ossman card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; 1017ea239d9SPierre Ossman break; 1027ea239d9SPierre Ossman 1037ea239d9SPierre Ossman case 2: /* MMC v2.0 - v2.2 */ 1047ea239d9SPierre Ossman case 3: /* MMC v3.1 - v3.3 */ 1057ea239d9SPierre Ossman case 4: /* MMC v4 */ 1067ea239d9SPierre Ossman card->cid.manfid = UNSTUFF_BITS(resp, 120, 8); 107cd389b21SDominique Martinet card->cid.oemid = UNSTUFF_BITS(resp, 104, 16); 1087ea239d9SPierre Ossman card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); 1097ea239d9SPierre Ossman card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); 1107ea239d9SPierre Ossman card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); 1117ea239d9SPierre Ossman card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); 1127ea239d9SPierre Ossman card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); 1137ea239d9SPierre Ossman card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); 11451e7e8b6SBernie Thompson card->cid.prv = UNSTUFF_BITS(resp, 48, 8); 1157ea239d9SPierre Ossman card->cid.serial = UNSTUFF_BITS(resp, 16, 32); 1167ea239d9SPierre Ossman card->cid.month = UNSTUFF_BITS(resp, 12, 4); 1177ea239d9SPierre Ossman card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; 1187ea239d9SPierre Ossman break; 1197ea239d9SPierre Ossman 1207ea239d9SPierre Ossman default: 121a3c76eb9SGirish K S pr_err("%s: card has unknown MMCA version %d\n", 1227ea239d9SPierre Ossman mmc_hostname(card->host), card->csd.mmca_vsn); 123bd766312SPierre Ossman return -EINVAL; 1247ea239d9SPierre Ossman } 125bd766312SPierre Ossman 126bd766312SPierre Ossman return 0; 1277ea239d9SPierre Ossman } 1287ea239d9SPierre Ossman 129dfe86cbaSAdrian Hunter static void mmc_set_erase_size(struct mmc_card *card) 130dfe86cbaSAdrian Hunter { 131dfe86cbaSAdrian Hunter if (card->ext_csd.erase_group_def & 1) 132dfe86cbaSAdrian Hunter card->erase_size = card->ext_csd.hc_erase_size; 133dfe86cbaSAdrian Hunter else 134dfe86cbaSAdrian Hunter card->erase_size = card->csd.erase_size; 135dfe86cbaSAdrian Hunter 136dfe86cbaSAdrian Hunter mmc_init_erase(card); 137dfe86cbaSAdrian Hunter } 138dfe86cbaSAdrian Hunter 1397ea239d9SPierre Ossman /* 1407ea239d9SPierre Ossman * Given a 128-bit response, decode to our card CSD structure. 1417ea239d9SPierre Ossman */ 142bd766312SPierre Ossman static int mmc_decode_csd(struct mmc_card *card) 1437ea239d9SPierre Ossman { 1447ea239d9SPierre Ossman struct mmc_csd *csd = &card->csd; 145dfe86cbaSAdrian Hunter unsigned int e, m, a, b; 1467ea239d9SPierre Ossman u32 *resp = card->raw_csd; 1477ea239d9SPierre Ossman 1487ea239d9SPierre Ossman /* 1497ea239d9SPierre Ossman * We only understand CSD structure v1.1 and v1.2. 1507ea239d9SPierre Ossman * v1.2 has extra information in bits 15, 11 and 10. 1516da24b78SKyungmin Park * We also support eMMC v4.4 & v4.41. 1527ea239d9SPierre Ossman */ 1536da24b78SKyungmin Park csd->structure = UNSTUFF_BITS(resp, 126, 2); 1546da24b78SKyungmin Park if (csd->structure == 0) { 155a3c76eb9SGirish K S pr_err("%s: unrecognised CSD structure version %d\n", 1566da24b78SKyungmin Park mmc_hostname(card->host), csd->structure); 157bd766312SPierre Ossman return -EINVAL; 1587ea239d9SPierre Ossman } 1597ea239d9SPierre Ossman 1607ea239d9SPierre Ossman csd->mmca_vsn = UNSTUFF_BITS(resp, 122, 4); 1617ea239d9SPierre Ossman m = UNSTUFF_BITS(resp, 115, 4); 1627ea239d9SPierre Ossman e = UNSTUFF_BITS(resp, 112, 3); 1634406ae21SShawn Lin csd->taac_ns = (taac_exp[e] * taac_mant[m] + 9) / 10; 1644406ae21SShawn Lin csd->taac_clks = UNSTUFF_BITS(resp, 104, 8) * 100; 1657ea239d9SPierre Ossman 1667ea239d9SPierre Ossman m = UNSTUFF_BITS(resp, 99, 4); 1677ea239d9SPierre Ossman e = UNSTUFF_BITS(resp, 96, 3); 1687ea239d9SPierre Ossman csd->max_dtr = tran_exp[e] * tran_mant[m]; 1697ea239d9SPierre Ossman csd->cmdclass = UNSTUFF_BITS(resp, 84, 12); 1707ea239d9SPierre Ossman 1717ea239d9SPierre Ossman e = UNSTUFF_BITS(resp, 47, 3); 1727ea239d9SPierre Ossman m = UNSTUFF_BITS(resp, 62, 12); 1737ea239d9SPierre Ossman csd->capacity = (1 + m) << (e + 2); 1747ea239d9SPierre Ossman 1757ea239d9SPierre Ossman csd->read_blkbits = UNSTUFF_BITS(resp, 80, 4); 1767ea239d9SPierre Ossman csd->read_partial = UNSTUFF_BITS(resp, 79, 1); 1777ea239d9SPierre Ossman csd->write_misalign = UNSTUFF_BITS(resp, 78, 1); 1787ea239d9SPierre Ossman csd->read_misalign = UNSTUFF_BITS(resp, 77, 1); 1793d705d14SSascha Hauer csd->dsr_imp = UNSTUFF_BITS(resp, 76, 1); 1807ea239d9SPierre Ossman csd->r2w_factor = UNSTUFF_BITS(resp, 26, 3); 1817ea239d9SPierre Ossman csd->write_blkbits = UNSTUFF_BITS(resp, 22, 4); 1827ea239d9SPierre Ossman csd->write_partial = UNSTUFF_BITS(resp, 21, 1); 183bd766312SPierre Ossman 184dfe86cbaSAdrian Hunter if (csd->write_blkbits >= 9) { 185dfe86cbaSAdrian Hunter a = UNSTUFF_BITS(resp, 42, 5); 186dfe86cbaSAdrian Hunter b = UNSTUFF_BITS(resp, 37, 5); 187dfe86cbaSAdrian Hunter csd->erase_size = (a + 1) * (b + 1); 188dfe86cbaSAdrian Hunter csd->erase_size <<= csd->write_blkbits - 9; 189dfe86cbaSAdrian Hunter } 190dfe86cbaSAdrian Hunter 191bd766312SPierre Ossman return 0; 1927ea239d9SPierre Ossman } 1937ea239d9SPierre Ossman 19496cf5f02SSeungwon Jeon static void mmc_select_card_type(struct mmc_card *card) 19596cf5f02SSeungwon Jeon { 19696cf5f02SSeungwon Jeon struct mmc_host *host = card->host; 1970a5b6438SSeungwon Jeon u8 card_type = card->ext_csd.raw_card_type; 1985f1a4dd0SLee Jones u32 caps = host->caps, caps2 = host->caps2; 199577fb131SSeungwon Jeon unsigned int hs_max_dtr = 0, hs200_max_dtr = 0; 2002415c0efSSeungwon Jeon unsigned int avail_type = 0; 20196cf5f02SSeungwon Jeon 20296cf5f02SSeungwon Jeon if (caps & MMC_CAP_MMC_HIGHSPEED && 2032415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS_26) { 2042415c0efSSeungwon Jeon hs_max_dtr = MMC_HIGH_26_MAX_DTR; 2052415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS_26; 2062415c0efSSeungwon Jeon } 2072415c0efSSeungwon Jeon 2082415c0efSSeungwon Jeon if (caps & MMC_CAP_MMC_HIGHSPEED && 2092415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS_52) { 21096cf5f02SSeungwon Jeon hs_max_dtr = MMC_HIGH_52_MAX_DTR; 2112415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS_52; 2122415c0efSSeungwon Jeon } 21396cf5f02SSeungwon Jeon 21420f921bbSUlf Hansson if (caps & (MMC_CAP_1_8V_DDR | MMC_CAP_3_3V_DDR) && 2152415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_DDR_1_8V) { 21696cf5f02SSeungwon Jeon hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; 2172415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_DDR_1_8V; 2182415c0efSSeungwon Jeon } 21996cf5f02SSeungwon Jeon 2202415c0efSSeungwon Jeon if (caps & MMC_CAP_1_2V_DDR && 2212415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_DDR_1_2V) { 2222415c0efSSeungwon Jeon hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; 2232415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_DDR_1_2V; 2242415c0efSSeungwon Jeon } 2252415c0efSSeungwon Jeon 2262415c0efSSeungwon Jeon if (caps2 & MMC_CAP2_HS200_1_8V_SDR && 2272415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS200_1_8V) { 228577fb131SSeungwon Jeon hs200_max_dtr = MMC_HS200_MAX_DTR; 2292415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS200_1_8V; 2302415c0efSSeungwon Jeon } 2312415c0efSSeungwon Jeon 2322415c0efSSeungwon Jeon if (caps2 & MMC_CAP2_HS200_1_2V_SDR && 2332415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS200_1_2V) { 234577fb131SSeungwon Jeon hs200_max_dtr = MMC_HS200_MAX_DTR; 2352415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS200_1_2V; 2362415c0efSSeungwon Jeon } 23796cf5f02SSeungwon Jeon 2380a5b6438SSeungwon Jeon if (caps2 & MMC_CAP2_HS400_1_8V && 2390a5b6438SSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS400_1_8V) { 2400a5b6438SSeungwon Jeon hs200_max_dtr = MMC_HS200_MAX_DTR; 2410a5b6438SSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS400_1_8V; 2420a5b6438SSeungwon Jeon } 2430a5b6438SSeungwon Jeon 2440a5b6438SSeungwon Jeon if (caps2 & MMC_CAP2_HS400_1_2V && 2450a5b6438SSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS400_1_2V) { 2460a5b6438SSeungwon Jeon hs200_max_dtr = MMC_HS200_MAX_DTR; 2470a5b6438SSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS400_1_2V; 2480a5b6438SSeungwon Jeon } 2490a5b6438SSeungwon Jeon 25081ac2af6SShawn Lin if ((caps2 & MMC_CAP2_HS400_ES) && 25181ac2af6SShawn Lin card->ext_csd.strobe_support && 25281ac2af6SShawn Lin (avail_type & EXT_CSD_CARD_TYPE_HS400)) 25381ac2af6SShawn Lin avail_type |= EXT_CSD_CARD_TYPE_HS400ES; 25481ac2af6SShawn Lin 25596cf5f02SSeungwon Jeon card->ext_csd.hs_max_dtr = hs_max_dtr; 256577fb131SSeungwon Jeon card->ext_csd.hs200_max_dtr = hs200_max_dtr; 2572415c0efSSeungwon Jeon card->mmc_avail_type = avail_type; 25896cf5f02SSeungwon Jeon } 25996cf5f02SSeungwon Jeon 260b4493eeaSGrégory Soutadé static void mmc_manage_enhanced_area(struct mmc_card *card, u8 *ext_csd) 261b4493eeaSGrégory Soutadé { 262994324bbSGrégory Soutadé u8 hc_erase_grp_sz, hc_wp_grp_sz; 263994324bbSGrégory Soutadé 264994324bbSGrégory Soutadé /* 265994324bbSGrégory Soutadé * Disable these attributes by default 266994324bbSGrégory Soutadé */ 267994324bbSGrégory Soutadé card->ext_csd.enhanced_area_offset = -EINVAL; 268994324bbSGrégory Soutadé card->ext_csd.enhanced_area_size = -EINVAL; 269b4493eeaSGrégory Soutadé 270b4493eeaSGrégory Soutadé /* 271b4493eeaSGrégory Soutadé * Enhanced area feature support -- check whether the eMMC 272b4493eeaSGrégory Soutadé * card has the Enhanced area enabled. If so, export enhanced 273b4493eeaSGrégory Soutadé * area offset and size to user by adding sysfs interface. 274b4493eeaSGrégory Soutadé */ 275b4493eeaSGrégory Soutadé if ((ext_csd[EXT_CSD_PARTITION_SUPPORT] & 0x2) && 276b4493eeaSGrégory Soutadé (ext_csd[EXT_CSD_PARTITION_ATTRIBUTE] & 0x1)) { 277994324bbSGrégory Soutadé if (card->ext_csd.partition_setting_completed) { 278b4493eeaSGrégory Soutadé hc_erase_grp_sz = 279b4493eeaSGrégory Soutadé ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 280b4493eeaSGrégory Soutadé hc_wp_grp_sz = 281b4493eeaSGrégory Soutadé ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 282b4493eeaSGrégory Soutadé 283b4493eeaSGrégory Soutadé /* 284b4493eeaSGrégory Soutadé * calculate the enhanced data area offset, in bytes 285b4493eeaSGrégory Soutadé */ 286b4493eeaSGrégory Soutadé card->ext_csd.enhanced_area_offset = 287ded8a5f9SKuninori Morimoto (((unsigned long long)ext_csd[139]) << 24) + 288ded8a5f9SKuninori Morimoto (((unsigned long long)ext_csd[138]) << 16) + 289ded8a5f9SKuninori Morimoto (((unsigned long long)ext_csd[137]) << 8) + 290ded8a5f9SKuninori Morimoto (((unsigned long long)ext_csd[136])); 291b4493eeaSGrégory Soutadé if (mmc_card_blockaddr(card)) 292b4493eeaSGrégory Soutadé card->ext_csd.enhanced_area_offset <<= 9; 293b4493eeaSGrégory Soutadé /* 294b4493eeaSGrégory Soutadé * calculate the enhanced data area size, in kilobytes 295b4493eeaSGrégory Soutadé */ 296b4493eeaSGrégory Soutadé card->ext_csd.enhanced_area_size = 297b4493eeaSGrégory Soutadé (ext_csd[142] << 16) + (ext_csd[141] << 8) + 298b4493eeaSGrégory Soutadé ext_csd[140]; 299b4493eeaSGrégory Soutadé card->ext_csd.enhanced_area_size *= 300b4493eeaSGrégory Soutadé (size_t)(hc_erase_grp_sz * hc_wp_grp_sz); 301b4493eeaSGrégory Soutadé card->ext_csd.enhanced_area_size <<= 9; 302b4493eeaSGrégory Soutadé } else { 303994324bbSGrégory Soutadé pr_warn("%s: defines enhanced area without partition setting complete\n", 304994324bbSGrégory Soutadé mmc_hostname(card->host)); 305994324bbSGrégory Soutadé } 306b4493eeaSGrégory Soutadé } 307b4493eeaSGrégory Soutadé } 308b4493eeaSGrégory Soutadé 309f3d7c229SBradley Bolen static void mmc_part_add(struct mmc_card *card, u64 size, 3104facdde1SUlf Hansson unsigned int part_cfg, char *name, int idx, bool ro, 3114facdde1SUlf Hansson int area_type) 3124facdde1SUlf Hansson { 3134facdde1SUlf Hansson card->part[card->nr_parts].size = size; 3144facdde1SUlf Hansson card->part[card->nr_parts].part_cfg = part_cfg; 3154facdde1SUlf Hansson sprintf(card->part[card->nr_parts].name, name, idx); 3164facdde1SUlf Hansson card->part[card->nr_parts].force_ro = ro; 3174facdde1SUlf Hansson card->part[card->nr_parts].area_type = area_type; 3184facdde1SUlf Hansson card->nr_parts++; 3194facdde1SUlf Hansson } 3204facdde1SUlf Hansson 321b4493eeaSGrégory Soutadé static void mmc_manage_gp_partitions(struct mmc_card *card, u8 *ext_csd) 322b4493eeaSGrégory Soutadé { 323b4493eeaSGrégory Soutadé int idx; 324994324bbSGrégory Soutadé u8 hc_erase_grp_sz, hc_wp_grp_sz; 325f3d7c229SBradley Bolen u64 part_size; 326b4493eeaSGrégory Soutadé 327b4493eeaSGrégory Soutadé /* 328b4493eeaSGrégory Soutadé * General purpose partition feature support -- 329b4493eeaSGrégory Soutadé * If ext_csd has the size of general purpose partitions, 330b4493eeaSGrégory Soutadé * set size, part_cfg, partition name in mmc_part. 331b4493eeaSGrégory Soutadé */ 332b4493eeaSGrégory Soutadé if (ext_csd[EXT_CSD_PARTITION_SUPPORT] & 333b4493eeaSGrégory Soutadé EXT_CSD_PART_SUPPORT_PART_EN) { 334b4493eeaSGrégory Soutadé hc_erase_grp_sz = 335b4493eeaSGrégory Soutadé ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 336b4493eeaSGrégory Soutadé hc_wp_grp_sz = 337b4493eeaSGrégory Soutadé ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 338b4493eeaSGrégory Soutadé 339b4493eeaSGrégory Soutadé for (idx = 0; idx < MMC_NUM_GP_PARTITION; idx++) { 340b4493eeaSGrégory Soutadé if (!ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3] && 341b4493eeaSGrégory Soutadé !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] && 342b4493eeaSGrégory Soutadé !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2]) 343b4493eeaSGrégory Soutadé continue; 344994324bbSGrégory Soutadé if (card->ext_csd.partition_setting_completed == 0) { 345994324bbSGrégory Soutadé pr_warn("%s: has partition size defined without partition complete\n", 346994324bbSGrégory Soutadé mmc_hostname(card->host)); 347994324bbSGrégory Soutadé break; 348994324bbSGrégory Soutadé } 349b4493eeaSGrégory Soutadé part_size = 350b4493eeaSGrégory Soutadé (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2] 351b4493eeaSGrégory Soutadé << 16) + 352b4493eeaSGrégory Soutadé (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] 353b4493eeaSGrégory Soutadé << 8) + 354b4493eeaSGrégory Soutadé ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3]; 355f3d7c229SBradley Bolen part_size *= (hc_erase_grp_sz * hc_wp_grp_sz); 356b4493eeaSGrégory Soutadé mmc_part_add(card, part_size << 19, 357b4493eeaSGrégory Soutadé EXT_CSD_PART_CONFIG_ACC_GP0 + idx, 358b4493eeaSGrégory Soutadé "gp%d", idx, false, 359b4493eeaSGrégory Soutadé MMC_BLK_DATA_AREA_GP); 360b4493eeaSGrégory Soutadé } 361b4493eeaSGrégory Soutadé } 362b4493eeaSGrégory Soutadé } 363b4493eeaSGrégory Soutadé 3641c447116SAdrian Hunter /* Minimum partition switch timeout in milliseconds */ 3651c447116SAdrian Hunter #define MMC_MIN_PART_SWITCH_TIME 300 3661c447116SAdrian Hunter 36708ee80ccSPhilip Rakity /* 36808ee80ccSPhilip Rakity * Decode extended CSD. 36908ee80ccSPhilip Rakity */ 370076ec38aSUlf Hansson static int mmc_decode_ext_csd(struct mmc_card *card, u8 *ext_csd) 37108ee80ccSPhilip Rakity { 372e0c368d5SNamjae Jeon int err = 0, idx; 373f3d7c229SBradley Bolen u64 part_size; 37481f8a7beSHans de Goede struct device_node *np; 37581f8a7beSHans de Goede bool broken_hpi = false; 37608ee80ccSPhilip Rakity 3776da24b78SKyungmin Park /* Version is coded in the CSD_STRUCTURE byte in the EXT_CSD register */ 378f39b2dd9SPhilip Rakity card->ext_csd.raw_ext_csd_structure = ext_csd[EXT_CSD_STRUCTURE]; 3796da24b78SKyungmin Park if (card->csd.structure == 3) { 380f39b2dd9SPhilip Rakity if (card->ext_csd.raw_ext_csd_structure > 2) { 381a3c76eb9SGirish K S pr_err("%s: unrecognised EXT_CSD structure " 3828fdd8521SPierre Ossman "version %d\n", mmc_hostname(card->host), 383f39b2dd9SPhilip Rakity card->ext_csd.raw_ext_csd_structure); 3846da24b78SKyungmin Park err = -EINVAL; 3856da24b78SKyungmin Park goto out; 3866da24b78SKyungmin Park } 3876da24b78SKyungmin Park } 3886da24b78SKyungmin Park 38981f8a7beSHans de Goede np = mmc_of_find_child_device(card->host, 0); 39081f8a7beSHans de Goede if (np && of_device_is_compatible(np, "mmc-card")) 39181f8a7beSHans de Goede broken_hpi = of_property_read_bool(np, "broken-hpi"); 39281f8a7beSHans de Goede of_node_put(np); 39381f8a7beSHans de Goede 39403a59437SRomain Izard /* 39503a59437SRomain Izard * The EXT_CSD format is meant to be forward compatible. As long 39603a59437SRomain Izard * as CSD_STRUCTURE does not change, all values for EXT_CSD_REV 39703a59437SRomain Izard * are authorized, see JEDEC JESD84-B50 section B.8. 39803a59437SRomain Izard */ 3996da24b78SKyungmin Park card->ext_csd.rev = ext_csd[EXT_CSD_REV]; 400d7604d76SPierre Ossman 4015320226aSPratibhasagar V /* fixup device after ext_csd revision field is updated */ 4025320226aSPratibhasagar V mmc_fixup_device(card, mmc_ext_csd_fixups); 4035320226aSPratibhasagar V 404f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[0] = ext_csd[EXT_CSD_SEC_CNT + 0]; 405f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[1] = ext_csd[EXT_CSD_SEC_CNT + 1]; 406f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[2] = ext_csd[EXT_CSD_SEC_CNT + 2]; 407f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[3] = ext_csd[EXT_CSD_SEC_CNT + 3]; 408b1ebe384SJarkko Lavinen if (card->ext_csd.rev >= 2) { 4097ea239d9SPierre Ossman card->ext_csd.sectors = 4107ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 0] << 0 | 4117ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 1] << 8 | 4127ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 2] << 16 | 4137ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 3] << 24; 414fc8a0985SHanumath Prasad 415fc8a0985SHanumath Prasad /* Cards with density > 2GiB are sector addressed */ 416fc8a0985SHanumath Prasad if (card->ext_csd.sectors > (2u * 1024 * 1024 * 1024) / 512) 4177ea239d9SPierre Ossman mmc_card_set_blockaddr(card); 418d7604d76SPierre Ossman } 41996cf5f02SSeungwon Jeon 42081ac2af6SShawn Lin card->ext_csd.strobe_support = ext_csd[EXT_CSD_STROBE_SUPPORT]; 421f39b2dd9SPhilip Rakity card->ext_csd.raw_card_type = ext_csd[EXT_CSD_CARD_TYPE]; 42296cf5f02SSeungwon Jeon mmc_select_card_type(card); 4237ea239d9SPierre Ossman 424f39b2dd9SPhilip Rakity card->ext_csd.raw_s_a_timeout = ext_csd[EXT_CSD_S_A_TIMEOUT]; 425f39b2dd9SPhilip Rakity card->ext_csd.raw_erase_timeout_mult = 426f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; 427f39b2dd9SPhilip Rakity card->ext_csd.raw_hc_erase_grp_size = 428f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 429dc913385SDmitry Osipenko card->ext_csd.raw_boot_mult = 430dc913385SDmitry Osipenko ext_csd[EXT_CSD_BOOT_MULT]; 431b1ebe384SJarkko Lavinen if (card->ext_csd.rev >= 3) { 432b1ebe384SJarkko Lavinen u8 sa_shift = ext_csd[EXT_CSD_S_A_TIMEOUT]; 433371a689fSAndrei Warkentin card->ext_csd.part_config = ext_csd[EXT_CSD_PART_CONFIG]; 434371a689fSAndrei Warkentin 435371a689fSAndrei Warkentin /* EXT_CSD value is in units of 10ms, but we store in ms */ 436371a689fSAndrei Warkentin card->ext_csd.part_time = 10 * ext_csd[EXT_CSD_PART_SWITCH_TIME]; 437b1ebe384SJarkko Lavinen 438b1ebe384SJarkko Lavinen /* Sleep / awake timeout in 100ns units */ 439b1ebe384SJarkko Lavinen if (sa_shift > 0 && sa_shift <= 0x17) 440b1ebe384SJarkko Lavinen card->ext_csd.sa_timeout = 441b1ebe384SJarkko Lavinen 1 << ext_csd[EXT_CSD_S_A_TIMEOUT]; 442dfe86cbaSAdrian Hunter card->ext_csd.erase_group_def = 443dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_ERASE_GROUP_DEF]; 444dfe86cbaSAdrian Hunter card->ext_csd.hc_erase_timeout = 300 * 445dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; 446dfe86cbaSAdrian Hunter card->ext_csd.hc_erase_size = 447dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] << 10; 448f4c5522bSAndrei Warkentin 449f4c5522bSAndrei Warkentin card->ext_csd.rel_sectors = ext_csd[EXT_CSD_REL_WR_SEC_C]; 450371a689fSAndrei Warkentin 451371a689fSAndrei Warkentin /* 452371a689fSAndrei Warkentin * There are two boot regions of equal size, defined in 453371a689fSAndrei Warkentin * multiples of 128K. 454371a689fSAndrei Warkentin */ 455e0c368d5SNamjae Jeon if (ext_csd[EXT_CSD_BOOT_MULT] && mmc_boot_partition_access(card->host)) { 456e0c368d5SNamjae Jeon for (idx = 0; idx < MMC_NUM_BOOT_PARTITION; idx++) { 457e0c368d5SNamjae Jeon part_size = ext_csd[EXT_CSD_BOOT_MULT] << 17; 458e0c368d5SNamjae Jeon mmc_part_add(card, part_size, 459e0c368d5SNamjae Jeon EXT_CSD_PART_CONFIG_ACC_BOOT0 + idx, 460add710eaSJohan Rudholm "boot%d", idx, true, 461add710eaSJohan Rudholm MMC_BLK_DATA_AREA_BOOT); 462e0c368d5SNamjae Jeon } 463e0c368d5SNamjae Jeon } 464b1ebe384SJarkko Lavinen } 465b1ebe384SJarkko Lavinen 466f39b2dd9SPhilip Rakity card->ext_csd.raw_hc_erase_gap_size = 467dd13b4edSJurgen Heeks ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 468f39b2dd9SPhilip Rakity card->ext_csd.raw_sec_trim_mult = 469f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_SEC_TRIM_MULT]; 470f39b2dd9SPhilip Rakity card->ext_csd.raw_sec_erase_mult = 471f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_SEC_ERASE_MULT]; 472f39b2dd9SPhilip Rakity card->ext_csd.raw_sec_feature_support = 473f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; 474f39b2dd9SPhilip Rakity card->ext_csd.raw_trim_mult = 475f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_TRIM_MULT]; 476836dc2feSPhilip Rakity card->ext_csd.raw_partition_support = ext_csd[EXT_CSD_PARTITION_SUPPORT]; 477b097e07fSAdrian Hunter card->ext_csd.raw_driver_strength = ext_csd[EXT_CSD_DRIVER_STRENGTH]; 478dfe86cbaSAdrian Hunter if (card->ext_csd.rev >= 4) { 47969803d4fSGrégory Soutadé if (ext_csd[EXT_CSD_PARTITION_SETTING_COMPLETED] & 48069803d4fSGrégory Soutadé EXT_CSD_PART_SETTING_COMPLETED) 48169803d4fSGrégory Soutadé card->ext_csd.partition_setting_completed = 1; 48269803d4fSGrégory Soutadé else 48369803d4fSGrégory Soutadé card->ext_csd.partition_setting_completed = 0; 48469803d4fSGrégory Soutadé 485b4493eeaSGrégory Soutadé mmc_manage_enhanced_area(card, ext_csd); 486709de99dSChuanxiao Dong 487b4493eeaSGrégory Soutadé mmc_manage_gp_partitions(card, ext_csd); 488e0c368d5SNamjae Jeon 489dfe86cbaSAdrian Hunter card->ext_csd.sec_trim_mult = 490dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_SEC_TRIM_MULT]; 491dfe86cbaSAdrian Hunter card->ext_csd.sec_erase_mult = 492dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_SEC_ERASE_MULT]; 493dfe86cbaSAdrian Hunter card->ext_csd.sec_feature_support = 494dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; 495dfe86cbaSAdrian Hunter card->ext_csd.trim_timeout = 300 * 496dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_TRIM_MULT]; 497add710eaSJohan Rudholm 498add710eaSJohan Rudholm /* 499add710eaSJohan Rudholm * Note that the call to mmc_part_add above defaults to read 500add710eaSJohan Rudholm * only. If this default assumption is changed, the call must 501add710eaSJohan Rudholm * take into account the value of boot_locked below. 502add710eaSJohan Rudholm */ 503add710eaSJohan Rudholm card->ext_csd.boot_ro_lock = ext_csd[EXT_CSD_BOOT_WP]; 504add710eaSJohan Rudholm card->ext_csd.boot_ro_lockable = true; 50560443712SFredrik Soderstedt 50660443712SFredrik Soderstedt /* Save power class values */ 50760443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_52_195 = 50860443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_52_195]; 50960443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_26_195 = 51060443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_26_195]; 51160443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_52_360 = 51260443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_52_360]; 51360443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_26_360 = 51460443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_26_360]; 51560443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_200_195 = 51660443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_200_195]; 51760443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_200_360 = 51860443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_200_360]; 51960443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_ddr_52_195 = 52060443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_DDR_52_195]; 52160443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_ddr_52_360 = 52260443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_DDR_52_360]; 5230a5b6438SSeungwon Jeon card->ext_csd.raw_pwr_cl_ddr_200_360 = 5240a5b6438SSeungwon Jeon ext_csd[EXT_CSD_PWR_CL_DDR_200_360]; 525dfe86cbaSAdrian Hunter } 526dfe86cbaSAdrian Hunter 527b2499518SAdrian Hunter if (card->ext_csd.rev >= 5) { 5287c4f10acSRomain Izard /* Adjust production date as per JEDEC JESD84-B451 */ 5297c4f10acSRomain Izard if (card->cid.year < 2010) 5307c4f10acSRomain Izard card->cid.year += 16; 5317c4f10acSRomain Izard 532950d56acSJaehoon Chung /* check whether the eMMC card supports BKOPS */ 533ba9f39a7SUlf Hansson if (ext_csd[EXT_CSD_BKOPS_SUPPORT] & 0x1) { 534950d56acSJaehoon Chung card->ext_csd.bkops = 1; 5350501be64SAlexey Skidanov card->ext_csd.man_bkops_en = 5360501be64SAlexey Skidanov (ext_csd[EXT_CSD_BKOPS_EN] & 5370501be64SAlexey Skidanov EXT_CSD_MANUAL_BKOPS_MASK); 538950d56acSJaehoon Chung card->ext_csd.raw_bkops_status = 539950d56acSJaehoon Chung ext_csd[EXT_CSD_BKOPS_STATUS]; 5406962c2fbSUri Yanai if (card->ext_csd.man_bkops_en) 5416962c2fbSUri Yanai pr_debug("%s: MAN_BKOPS_EN bit is set\n", 542950d56acSJaehoon Chung mmc_hostname(card->host)); 543efff8e78SUri Yanai card->ext_csd.auto_bkops_en = 544efff8e78SUri Yanai (ext_csd[EXT_CSD_BKOPS_EN] & 545efff8e78SUri Yanai EXT_CSD_AUTO_BKOPS_MASK); 546efff8e78SUri Yanai if (card->ext_csd.auto_bkops_en) 547efff8e78SUri Yanai pr_debug("%s: AUTO_BKOPS_EN bit is set\n", 548efff8e78SUri Yanai mmc_hostname(card->host)); 549950d56acSJaehoon Chung } 550950d56acSJaehoon Chung 551eb0d8f13SJaehoon Chung /* check whether the eMMC card supports HPI */ 5525320226aSPratibhasagar V if (!mmc_card_broken_hpi(card) && 5535320226aSPratibhasagar V !broken_hpi && (ext_csd[EXT_CSD_HPI_FEATURES] & 0x1)) { 554eb0d8f13SJaehoon Chung card->ext_csd.hpi = 1; 555eb0d8f13SJaehoon Chung if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x2) 556eb0d8f13SJaehoon Chung card->ext_csd.hpi_cmd = MMC_STOP_TRANSMISSION; 557eb0d8f13SJaehoon Chung else 558eb0d8f13SJaehoon Chung card->ext_csd.hpi_cmd = MMC_SEND_STATUS; 559eb0d8f13SJaehoon Chung /* 560eb0d8f13SJaehoon Chung * Indicate the maximum timeout to close 561eb0d8f13SJaehoon Chung * a command interrupted by HPI 562eb0d8f13SJaehoon Chung */ 563eb0d8f13SJaehoon Chung card->ext_csd.out_of_int_time = 564eb0d8f13SJaehoon Chung ext_csd[EXT_CSD_OUT_OF_INTERRUPT_TIME] * 10; 565eb0d8f13SJaehoon Chung } 566eb0d8f13SJaehoon Chung 567f4c5522bSAndrei Warkentin card->ext_csd.rel_param = ext_csd[EXT_CSD_WR_REL_PARAM]; 568b2499518SAdrian Hunter card->ext_csd.rst_n_function = ext_csd[EXT_CSD_RST_N_FUNCTION]; 569090d25feSLoic Pallardy 570090d25feSLoic Pallardy /* 571090d25feSLoic Pallardy * RPMB regions are defined in multiples of 128K. 572090d25feSLoic Pallardy */ 573090d25feSLoic Pallardy card->ext_csd.raw_rpmb_size_mult = ext_csd[EXT_CSD_RPMB_MULT]; 574d0123ccaSBalaji T K if (ext_csd[EXT_CSD_RPMB_MULT] && mmc_host_cmd23(card->host)) { 575090d25feSLoic Pallardy mmc_part_add(card, ext_csd[EXT_CSD_RPMB_MULT] << 17, 576090d25feSLoic Pallardy EXT_CSD_PART_CONFIG_ACC_RPMB, 577090d25feSLoic Pallardy "rpmb", 0, false, 578090d25feSLoic Pallardy MMC_BLK_DATA_AREA_RPMB); 579090d25feSLoic Pallardy } 580b2499518SAdrian Hunter } 581f4c5522bSAndrei Warkentin 5825238acbeSAndrei Warkentin card->ext_csd.raw_erased_mem_count = ext_csd[EXT_CSD_ERASED_MEM_CONT]; 583dfe86cbaSAdrian Hunter if (ext_csd[EXT_CSD_ERASED_MEM_CONT]) 584dfe86cbaSAdrian Hunter card->erased_byte = 0xFF; 585dfe86cbaSAdrian Hunter else 586dfe86cbaSAdrian Hunter card->erased_byte = 0x0; 587dfe86cbaSAdrian Hunter 588336c716aSSeungwon Jeon /* eMMC v4.5 or later */ 589fe1b5700SUlf Hansson card->ext_csd.generic_cmd6_time = DEFAULT_CMD6_TIMEOUT_MS; 590bec8726aSGirish K S if (card->ext_csd.rev >= 6) { 591336c716aSSeungwon Jeon card->ext_csd.feature_support |= MMC_DISCARD_FEATURE; 592336c716aSSeungwon Jeon 593b23cf0bdSSeungwon Jeon card->ext_csd.generic_cmd6_time = 10 * 594b23cf0bdSSeungwon Jeon ext_csd[EXT_CSD_GENERIC_CMD6_TIME]; 595bec8726aSGirish K S card->ext_csd.power_off_longtime = 10 * 596bec8726aSGirish K S ext_csd[EXT_CSD_POWER_OFF_LONG_TIME]; 597b23cf0bdSSeungwon Jeon 598881d1c25SSeungwon Jeon card->ext_csd.cache_size = 599881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 0] << 0 | 600881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 1] << 8 | 601881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 2] << 16 | 602881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 3] << 24; 6034265900eSSaugata Das 6044265900eSSaugata Das if (ext_csd[EXT_CSD_DATA_SECTOR_SIZE] == 1) 6054265900eSSaugata Das card->ext_csd.data_sector_size = 4096; 6064265900eSSaugata Das else 6074265900eSSaugata Das card->ext_csd.data_sector_size = 512; 6084265900eSSaugata Das 6094265900eSSaugata Das if ((ext_csd[EXT_CSD_DATA_TAG_SUPPORT] & 1) && 6104265900eSSaugata Das (ext_csd[EXT_CSD_TAG_UNIT_SIZE] <= 8)) { 6114265900eSSaugata Das card->ext_csd.data_tag_unit_size = 6124265900eSSaugata Das ((unsigned int) 1 << ext_csd[EXT_CSD_TAG_UNIT_SIZE]) * 6134265900eSSaugata Das (card->ext_csd.data_sector_size); 6144265900eSSaugata Das } else { 6154265900eSSaugata Das card->ext_csd.data_tag_unit_size = 0; 6164265900eSSaugata Das } 617abd9ac14SSeungwon Jeon 618abd9ac14SSeungwon Jeon card->ext_csd.max_packed_writes = 619abd9ac14SSeungwon Jeon ext_csd[EXT_CSD_MAX_PACKED_WRITES]; 620abd9ac14SSeungwon Jeon card->ext_csd.max_packed_reads = 621abd9ac14SSeungwon Jeon ext_csd[EXT_CSD_MAX_PACKED_READS]; 622a5075eb9SSaugata Das } else { 623a5075eb9SSaugata Das card->ext_csd.data_sector_size = 512; 624336c716aSSeungwon Jeon } 625881d1c25SSeungwon Jeon 62666fbacccSAdrian Hunter /* 62766fbacccSAdrian Hunter * GENERIC_CMD6_TIME is to be used "unless a specific timeout is defined 62866fbacccSAdrian Hunter * when accessing a specific field", so use it here if there is no 62966fbacccSAdrian Hunter * PARTITION_SWITCH_TIME. 63066fbacccSAdrian Hunter */ 63166fbacccSAdrian Hunter if (!card->ext_csd.part_time) 63266fbacccSAdrian Hunter card->ext_csd.part_time = card->ext_csd.generic_cmd6_time; 63366fbacccSAdrian Hunter /* Some eMMC set the value too low so set a minimum */ 63466fbacccSAdrian Hunter if (card->ext_csd.part_time < MMC_MIN_PART_SWITCH_TIME) 63566fbacccSAdrian Hunter card->ext_csd.part_time = MMC_MIN_PART_SWITCH_TIME; 63666fbacccSAdrian Hunter 6370f762426SGwendal Grignou /* eMMC v5 or later */ 6380f762426SGwendal Grignou if (card->ext_csd.rev >= 7) { 6390f762426SGwendal Grignou memcpy(card->ext_csd.fwrev, &ext_csd[EXT_CSD_FIRMWARE_VERSION], 6400f762426SGwendal Grignou MMC_FIRMWARE_LEN); 6410f762426SGwendal Grignou card->ext_csd.ffu_capable = 6420f762426SGwendal Grignou (ext_csd[EXT_CSD_SUPPORTED_MODE] & 0x1) && 6430f762426SGwendal Grignou !(ext_csd[EXT_CSD_FW_CONFIG] & 0x1); 64446bc5c40SJungseung Lee 64546bc5c40SJungseung Lee card->ext_csd.pre_eol_info = ext_csd[EXT_CSD_PRE_EOL_INFO]; 64646bc5c40SJungseung Lee card->ext_csd.device_life_time_est_typ_a = 64746bc5c40SJungseung Lee ext_csd[EXT_CSD_DEVICE_LIFE_TIME_EST_TYP_A]; 64846bc5c40SJungseung Lee card->ext_csd.device_life_time_est_typ_b = 64946bc5c40SJungseung Lee ext_csd[EXT_CSD_DEVICE_LIFE_TIME_EST_TYP_B]; 6500f762426SGwendal Grignou } 651925ff3a7SAdrian Hunter 652925ff3a7SAdrian Hunter /* eMMC v5.1 or later */ 653925ff3a7SAdrian Hunter if (card->ext_csd.rev >= 8) { 654925ff3a7SAdrian Hunter card->ext_csd.cmdq_support = ext_csd[EXT_CSD_CMDQ_SUPPORT] & 655925ff3a7SAdrian Hunter EXT_CSD_CMDQ_SUPPORTED; 656925ff3a7SAdrian Hunter card->ext_csd.cmdq_depth = (ext_csd[EXT_CSD_CMDQ_DEPTH] & 657925ff3a7SAdrian Hunter EXT_CSD_CMDQ_DEPTH_MASK) + 1; 658925ff3a7SAdrian Hunter /* Exclude inefficiently small queue depths */ 659925ff3a7SAdrian Hunter if (card->ext_csd.cmdq_depth <= 2) { 660925ff3a7SAdrian Hunter card->ext_csd.cmdq_support = false; 661925ff3a7SAdrian Hunter card->ext_csd.cmdq_depth = 0; 662925ff3a7SAdrian Hunter } 663925ff3a7SAdrian Hunter if (card->ext_csd.cmdq_support) { 664925ff3a7SAdrian Hunter pr_debug("%s: Command Queue supported depth %u\n", 665925ff3a7SAdrian Hunter mmc_hostname(card->host), 666925ff3a7SAdrian Hunter card->ext_csd.cmdq_depth); 667925ff3a7SAdrian Hunter } 668064f7e58SKrishna Konda card->ext_csd.enhanced_rpmb_supported = 669064f7e58SKrishna Konda (card->ext_csd.rel_param & 670064f7e58SKrishna Konda EXT_CSD_WR_REL_PARAM_EN_RPMB_REL_WR); 671925ff3a7SAdrian Hunter } 6727ea239d9SPierre Ossman out: 67308ee80ccSPhilip Rakity return err; 67408ee80ccSPhilip Rakity } 6757ea239d9SPierre Ossman 676076ec38aSUlf Hansson static int mmc_read_ext_csd(struct mmc_card *card) 677076ec38aSUlf Hansson { 678c197787cSUlf Hansson u8 *ext_csd; 679076ec38aSUlf Hansson int err; 680076ec38aSUlf Hansson 681c197787cSUlf Hansson if (!mmc_can_ext_csd(card)) 682c197787cSUlf Hansson return 0; 683c197787cSUlf Hansson 684076ec38aSUlf Hansson err = mmc_get_ext_csd(card, &ext_csd); 685c197787cSUlf Hansson if (err) { 686c197787cSUlf Hansson /* If the host or the card can't do the switch, 687c197787cSUlf Hansson * fail more gracefully. */ 688c197787cSUlf Hansson if ((err != -EINVAL) 689c197787cSUlf Hansson && (err != -ENOSYS) 690c197787cSUlf Hansson && (err != -EFAULT)) 691076ec38aSUlf Hansson return err; 692076ec38aSUlf Hansson 693c197787cSUlf Hansson /* 694c197787cSUlf Hansson * High capacity cards should have this "magic" size 695c197787cSUlf Hansson * stored in their CSD. 696c197787cSUlf Hansson */ 697c197787cSUlf Hansson if (card->csd.capacity == (4096 * 512)) { 698c197787cSUlf Hansson pr_err("%s: unable to read EXT_CSD on a possible high capacity card. Card will be ignored.\n", 699c197787cSUlf Hansson mmc_hostname(card->host)); 700c197787cSUlf Hansson } else { 701c197787cSUlf Hansson pr_warn("%s: unable to read EXT_CSD, performance might suffer\n", 702c197787cSUlf Hansson mmc_hostname(card->host)); 703c197787cSUlf Hansson err = 0; 704c197787cSUlf Hansson } 705c197787cSUlf Hansson 706c197787cSUlf Hansson return err; 707c197787cSUlf Hansson } 708c197787cSUlf Hansson 709076ec38aSUlf Hansson err = mmc_decode_ext_csd(card, ext_csd); 710076ec38aSUlf Hansson kfree(ext_csd); 711076ec38aSUlf Hansson return err; 712076ec38aSUlf Hansson } 713076ec38aSUlf Hansson 714f39b2dd9SPhilip Rakity static int mmc_compare_ext_csds(struct mmc_card *card, unsigned bus_width) 71508ee80ccSPhilip Rakity { 71608ee80ccSPhilip Rakity u8 *bw_ext_csd; 71708ee80ccSPhilip Rakity int err; 71808ee80ccSPhilip Rakity 719f39b2dd9SPhilip Rakity if (bus_width == MMC_BUS_WIDTH_1) 720f39b2dd9SPhilip Rakity return 0; 72108ee80ccSPhilip Rakity 722f39b2dd9SPhilip Rakity err = mmc_get_ext_csd(card, &bw_ext_csd); 723c197787cSUlf Hansson if (err) 724c197787cSUlf Hansson return err; 72508ee80ccSPhilip Rakity 72608ee80ccSPhilip Rakity /* only compare read only fields */ 727dd13b4edSJurgen Heeks err = !((card->ext_csd.raw_partition_support == 72808ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_PARTITION_SUPPORT]) && 729f39b2dd9SPhilip Rakity (card->ext_csd.raw_erased_mem_count == 73008ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_ERASED_MEM_CONT]) && 731f39b2dd9SPhilip Rakity (card->ext_csd.rev == 73208ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_REV]) && 733f39b2dd9SPhilip Rakity (card->ext_csd.raw_ext_csd_structure == 73408ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_STRUCTURE]) && 735f39b2dd9SPhilip Rakity (card->ext_csd.raw_card_type == 73608ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_CARD_TYPE]) && 737f39b2dd9SPhilip Rakity (card->ext_csd.raw_s_a_timeout == 73808ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_S_A_TIMEOUT]) && 739f39b2dd9SPhilip Rakity (card->ext_csd.raw_hc_erase_gap_size == 74008ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_HC_WP_GRP_SIZE]) && 741f39b2dd9SPhilip Rakity (card->ext_csd.raw_erase_timeout_mult == 74208ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]) && 743f39b2dd9SPhilip Rakity (card->ext_csd.raw_hc_erase_grp_size == 74408ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]) && 745f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_trim_mult == 74608ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_TRIM_MULT]) && 747f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_erase_mult == 74808ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_ERASE_MULT]) && 749f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_feature_support == 75008ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]) && 751f39b2dd9SPhilip Rakity (card->ext_csd.raw_trim_mult == 75208ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_TRIM_MULT]) && 753f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[0] == 754f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 0]) && 755f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[1] == 756f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 1]) && 757f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[2] == 758f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 2]) && 759f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[3] == 76060443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_SEC_CNT + 3]) && 76160443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_52_195 == 76260443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_52_195]) && 76360443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_26_195 == 76460443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_26_195]) && 76560443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_52_360 == 76660443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_52_360]) && 76760443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_26_360 == 76860443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_26_360]) && 76960443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_200_195 == 77060443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_200_195]) && 77160443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_200_360 == 77260443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_200_360]) && 77360443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_ddr_52_195 == 77460443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_195]) && 77560443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_ddr_52_360 == 7760a5b6438SSeungwon Jeon bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_360]) && 7770a5b6438SSeungwon Jeon (card->ext_csd.raw_pwr_cl_ddr_200_360 == 7780a5b6438SSeungwon Jeon bw_ext_csd[EXT_CSD_PWR_CL_DDR_200_360])); 7790a5b6438SSeungwon Jeon 78008ee80ccSPhilip Rakity if (err) 78108ee80ccSPhilip Rakity err = -EINVAL; 78208ee80ccSPhilip Rakity 78300b41b58SUlf Hansson kfree(bw_ext_csd); 7847ea239d9SPierre Ossman return err; 7857ea239d9SPierre Ossman } 7867ea239d9SPierre Ossman 78751ec92e2SPierre Ossman MMC_DEV_ATTR(cid, "%08x%08x%08x%08x\n", card->raw_cid[0], card->raw_cid[1], 78851ec92e2SPierre Ossman card->raw_cid[2], card->raw_cid[3]); 78951ec92e2SPierre Ossman MMC_DEV_ATTR(csd, "%08x%08x%08x%08x\n", card->raw_csd[0], card->raw_csd[1], 79051ec92e2SPierre Ossman card->raw_csd[2], card->raw_csd[3]); 79151ec92e2SPierre Ossman MMC_DEV_ATTR(date, "%02d/%04d\n", card->cid.month, card->cid.year); 792dfe86cbaSAdrian Hunter MMC_DEV_ATTR(erase_size, "%u\n", card->erase_size << 9); 793dfe86cbaSAdrian Hunter MMC_DEV_ATTR(preferred_erase_size, "%u\n", card->pref_erase << 9); 7940f762426SGwendal Grignou MMC_DEV_ATTR(ffu_capable, "%d\n", card->ext_csd.ffu_capable); 79551ec92e2SPierre Ossman MMC_DEV_ATTR(hwrev, "0x%x\n", card->cid.hwrev); 79651ec92e2SPierre Ossman MMC_DEV_ATTR(manfid, "0x%06x\n", card->cid.manfid); 79751ec92e2SPierre Ossman MMC_DEV_ATTR(name, "%s\n", card->cid.prod_name); 79851ec92e2SPierre Ossman MMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid); 79951e7e8b6SBernie Thompson MMC_DEV_ATTR(prv, "0x%x\n", card->cid.prv); 80004fa0540SJin Qian MMC_DEV_ATTR(rev, "0x%x\n", card->ext_csd.rev); 80180a780a1SBastian Stender MMC_DEV_ATTR(pre_eol_info, "0x%02x\n", card->ext_csd.pre_eol_info); 80246bc5c40SJungseung Lee MMC_DEV_ATTR(life_time, "0x%02x 0x%02x\n", 80346bc5c40SJungseung Lee card->ext_csd.device_life_time_est_typ_a, 80446bc5c40SJungseung Lee card->ext_csd.device_life_time_est_typ_b); 80551ec92e2SPierre Ossman MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial); 806709de99dSChuanxiao Dong MMC_DEV_ATTR(enhanced_area_offset, "%llu\n", 807709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset); 808709de99dSChuanxiao Dong MMC_DEV_ATTR(enhanced_area_size, "%u\n", card->ext_csd.enhanced_area_size); 809188cc042SLoic Pallardy MMC_DEV_ATTR(raw_rpmb_size_mult, "%#x\n", card->ext_csd.raw_rpmb_size_mult); 810064f7e58SKrishna Konda MMC_DEV_ATTR(enhanced_rpmb_supported, "%#x\n", 811064f7e58SKrishna Konda card->ext_csd.enhanced_rpmb_supported); 812188cc042SLoic Pallardy MMC_DEV_ATTR(rel_sectors, "%#x\n", card->ext_csd.rel_sectors); 813c892b0d8SBastian Stender MMC_DEV_ATTR(ocr, "0x%08x\n", card->ocr); 814974e85e9SHarish Jenny K N MMC_DEV_ATTR(rca, "0x%04x\n", card->rca); 815b658af71SAdrian Hunter MMC_DEV_ATTR(cmdq_en, "%d\n", card->ext_csd.cmdq_en); 81651ec92e2SPierre Ossman 8170f762426SGwendal Grignou static ssize_t mmc_fwrev_show(struct device *dev, 8180f762426SGwendal Grignou struct device_attribute *attr, 8190f762426SGwendal Grignou char *buf) 8200f762426SGwendal Grignou { 8210f762426SGwendal Grignou struct mmc_card *card = mmc_dev_to_card(dev); 8220f762426SGwendal Grignou 823f5d8a5feSSergey Shtylyov if (card->ext_csd.rev < 7) 824f5d8a5feSSergey Shtylyov return sysfs_emit(buf, "0x%x\n", card->cid.fwrev); 825f5d8a5feSSergey Shtylyov else 826f5d8a5feSSergey Shtylyov return sysfs_emit(buf, "0x%*phN\n", MMC_FIRMWARE_LEN, 8270f762426SGwendal Grignou card->ext_csd.fwrev); 8280f762426SGwendal Grignou } 8290f762426SGwendal Grignou 8300f762426SGwendal Grignou static DEVICE_ATTR(fwrev, S_IRUGO, mmc_fwrev_show, NULL); 8310f762426SGwendal Grignou 8326825a606SBojan Prtvar static ssize_t mmc_dsr_show(struct device *dev, 8336825a606SBojan Prtvar struct device_attribute *attr, 8346825a606SBojan Prtvar char *buf) 8356825a606SBojan Prtvar { 8366825a606SBojan Prtvar struct mmc_card *card = mmc_dev_to_card(dev); 8376825a606SBojan Prtvar struct mmc_host *host = card->host; 8386825a606SBojan Prtvar 8396825a606SBojan Prtvar if (card->csd.dsr_imp && host->dsr_req) 840f5d8a5feSSergey Shtylyov return sysfs_emit(buf, "0x%x\n", host->dsr); 8416825a606SBojan Prtvar else 8426825a606SBojan Prtvar /* return default DSR value */ 843f5d8a5feSSergey Shtylyov return sysfs_emit(buf, "0x%x\n", 0x404); 8446825a606SBojan Prtvar } 8456825a606SBojan Prtvar 8466825a606SBojan Prtvar static DEVICE_ATTR(dsr, S_IRUGO, mmc_dsr_show, NULL); 8476825a606SBojan Prtvar 84851ec92e2SPierre Ossman static struct attribute *mmc_std_attrs[] = { 84951ec92e2SPierre Ossman &dev_attr_cid.attr, 85051ec92e2SPierre Ossman &dev_attr_csd.attr, 85151ec92e2SPierre Ossman &dev_attr_date.attr, 852dfe86cbaSAdrian Hunter &dev_attr_erase_size.attr, 853dfe86cbaSAdrian Hunter &dev_attr_preferred_erase_size.attr, 85451ec92e2SPierre Ossman &dev_attr_fwrev.attr, 8550f762426SGwendal Grignou &dev_attr_ffu_capable.attr, 85651ec92e2SPierre Ossman &dev_attr_hwrev.attr, 85751ec92e2SPierre Ossman &dev_attr_manfid.attr, 85851ec92e2SPierre Ossman &dev_attr_name.attr, 85951ec92e2SPierre Ossman &dev_attr_oemid.attr, 86051e7e8b6SBernie Thompson &dev_attr_prv.attr, 86104fa0540SJin Qian &dev_attr_rev.attr, 86246bc5c40SJungseung Lee &dev_attr_pre_eol_info.attr, 86346bc5c40SJungseung Lee &dev_attr_life_time.attr, 86451ec92e2SPierre Ossman &dev_attr_serial.attr, 865709de99dSChuanxiao Dong &dev_attr_enhanced_area_offset.attr, 866709de99dSChuanxiao Dong &dev_attr_enhanced_area_size.attr, 867188cc042SLoic Pallardy &dev_attr_raw_rpmb_size_mult.attr, 868064f7e58SKrishna Konda &dev_attr_enhanced_rpmb_supported.attr, 869188cc042SLoic Pallardy &dev_attr_rel_sectors.attr, 8705fb06af7SBojan Prtvar &dev_attr_ocr.attr, 871974e85e9SHarish Jenny K N &dev_attr_rca.attr, 8726825a606SBojan Prtvar &dev_attr_dsr.attr, 873b658af71SAdrian Hunter &dev_attr_cmdq_en.attr, 87451ec92e2SPierre Ossman NULL, 87551ec92e2SPierre Ossman }; 876d1e58212SAxel Lin ATTRIBUTE_GROUPS(mmc_std); 87751ec92e2SPierre Ossman 87851ec92e2SPierre Ossman static struct device_type mmc_type = { 879d1e58212SAxel Lin .groups = mmc_std_groups, 88051ec92e2SPierre Ossman }; 88151ec92e2SPierre Ossman 8827ea239d9SPierre Ossman /* 883b87d8dbfSGirish K S * Select the PowerClass for the current bus width 884b87d8dbfSGirish K S * If power class is defined for 4/8 bit bus in the 885b87d8dbfSGirish K S * extended CSD register, select it by executing the 886b87d8dbfSGirish K S * mmc_switch command. 887b87d8dbfSGirish K S */ 8882385049dSSeungwon Jeon static int __mmc_select_powerclass(struct mmc_card *card, 88960443712SFredrik Soderstedt unsigned int bus_width) 890b87d8dbfSGirish K S { 8912385049dSSeungwon Jeon struct mmc_host *host = card->host; 8922385049dSSeungwon Jeon struct mmc_ext_csd *ext_csd = &card->ext_csd; 89360443712SFredrik Soderstedt unsigned int pwrclass_val = 0; 8942385049dSSeungwon Jeon int err = 0; 895b87d8dbfSGirish K S 896b87d8dbfSGirish K S switch (1 << host->ios.vdd) { 897b87d8dbfSGirish K S case MMC_VDD_165_195: 8982385049dSSeungwon Jeon if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) 8992385049dSSeungwon Jeon pwrclass_val = ext_csd->raw_pwr_cl_26_195; 9002385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR) 90160443712SFredrik Soderstedt pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? 9022385049dSSeungwon Jeon ext_csd->raw_pwr_cl_52_195 : 9032385049dSSeungwon Jeon ext_csd->raw_pwr_cl_ddr_52_195; 9042385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HS200_MAX_DTR) 9052385049dSSeungwon Jeon pwrclass_val = ext_csd->raw_pwr_cl_200_195; 906b87d8dbfSGirish K S break; 90793fc5a47SSubhash Jadavani case MMC_VDD_27_28: 90893fc5a47SSubhash Jadavani case MMC_VDD_28_29: 90993fc5a47SSubhash Jadavani case MMC_VDD_29_30: 91093fc5a47SSubhash Jadavani case MMC_VDD_30_31: 91193fc5a47SSubhash Jadavani case MMC_VDD_31_32: 912b87d8dbfSGirish K S case MMC_VDD_32_33: 913b87d8dbfSGirish K S case MMC_VDD_33_34: 914b87d8dbfSGirish K S case MMC_VDD_34_35: 915b87d8dbfSGirish K S case MMC_VDD_35_36: 9162385049dSSeungwon Jeon if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) 9172385049dSSeungwon Jeon pwrclass_val = ext_csd->raw_pwr_cl_26_360; 9182385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR) 91960443712SFredrik Soderstedt pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? 9202385049dSSeungwon Jeon ext_csd->raw_pwr_cl_52_360 : 9212385049dSSeungwon Jeon ext_csd->raw_pwr_cl_ddr_52_360; 9222385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HS200_MAX_DTR) 9230a5b6438SSeungwon Jeon pwrclass_val = (bus_width == EXT_CSD_DDR_BUS_WIDTH_8) ? 9240a5b6438SSeungwon Jeon ext_csd->raw_pwr_cl_ddr_200_360 : 9250a5b6438SSeungwon Jeon ext_csd->raw_pwr_cl_200_360; 926b87d8dbfSGirish K S break; 927b87d8dbfSGirish K S default: 9286606110dSJoe Perches pr_warn("%s: Voltage range not supported for power class\n", 9296606110dSJoe Perches mmc_hostname(host)); 930b87d8dbfSGirish K S return -EINVAL; 931b87d8dbfSGirish K S } 932b87d8dbfSGirish K S 933b87d8dbfSGirish K S if (bus_width & (EXT_CSD_BUS_WIDTH_8 | EXT_CSD_DDR_BUS_WIDTH_8)) 934b87d8dbfSGirish K S pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_8BIT_MASK) >> 935b87d8dbfSGirish K S EXT_CSD_PWR_CL_8BIT_SHIFT; 936b87d8dbfSGirish K S else 937b87d8dbfSGirish K S pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_4BIT_MASK) >> 938b87d8dbfSGirish K S EXT_CSD_PWR_CL_4BIT_SHIFT; 939b87d8dbfSGirish K S 940b87d8dbfSGirish K S /* If the power class is different from the default value */ 941b87d8dbfSGirish K S if (pwrclass_val > 0) { 942b87d8dbfSGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 943b87d8dbfSGirish K S EXT_CSD_POWER_CLASS, 944b87d8dbfSGirish K S pwrclass_val, 94571fe3eb0SSeungwon Jeon card->ext_csd.generic_cmd6_time); 946b87d8dbfSGirish K S } 947b87d8dbfSGirish K S 948b87d8dbfSGirish K S return err; 949b87d8dbfSGirish K S } 950b87d8dbfSGirish K S 9512385049dSSeungwon Jeon static int mmc_select_powerclass(struct mmc_card *card) 9522385049dSSeungwon Jeon { 9532385049dSSeungwon Jeon struct mmc_host *host = card->host; 9542385049dSSeungwon Jeon u32 bus_width, ext_csd_bits; 9552385049dSSeungwon Jeon int err, ddr; 9562385049dSSeungwon Jeon 9572385049dSSeungwon Jeon /* Power class selection is supported for versions >= 4.0 */ 958148bcab2SUlf Hansson if (!mmc_can_ext_csd(card)) 9592385049dSSeungwon Jeon return 0; 9602385049dSSeungwon Jeon 9612385049dSSeungwon Jeon bus_width = host->ios.bus_width; 9622385049dSSeungwon Jeon /* Power class values are defined only for 4/8 bit bus */ 9632385049dSSeungwon Jeon if (bus_width == MMC_BUS_WIDTH_1) 9642385049dSSeungwon Jeon return 0; 9652385049dSSeungwon Jeon 9662385049dSSeungwon Jeon ddr = card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52; 9672385049dSSeungwon Jeon if (ddr) 9682385049dSSeungwon Jeon ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? 9692385049dSSeungwon Jeon EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; 9702385049dSSeungwon Jeon else 9712385049dSSeungwon Jeon ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? 9722385049dSSeungwon Jeon EXT_CSD_BUS_WIDTH_8 : EXT_CSD_BUS_WIDTH_4; 9732385049dSSeungwon Jeon 9742385049dSSeungwon Jeon err = __mmc_select_powerclass(card, ext_csd_bits); 9752385049dSSeungwon Jeon if (err) 9762385049dSSeungwon Jeon pr_warn("%s: power class selection to bus width %d ddr %d failed\n", 9772385049dSSeungwon Jeon mmc_hostname(host), 1 << bus_width, ddr); 9782385049dSSeungwon Jeon 9792385049dSSeungwon Jeon return err; 9802385049dSSeungwon Jeon } 9812385049dSSeungwon Jeon 982b87d8dbfSGirish K S /* 983577fb131SSeungwon Jeon * Set the bus speed for the selected speed mode. 984a4924c71SGirish K S */ 985577fb131SSeungwon Jeon static void mmc_set_bus_speed(struct mmc_card *card) 986a4924c71SGirish K S { 987577fb131SSeungwon Jeon unsigned int max_dtr = (unsigned int)-1; 988577fb131SSeungwon Jeon 9890a5b6438SSeungwon Jeon if ((mmc_card_hs200(card) || mmc_card_hs400(card)) && 9900a5b6438SSeungwon Jeon max_dtr > card->ext_csd.hs200_max_dtr) 991577fb131SSeungwon Jeon max_dtr = card->ext_csd.hs200_max_dtr; 992577fb131SSeungwon Jeon else if (mmc_card_hs(card) && max_dtr > card->ext_csd.hs_max_dtr) 993577fb131SSeungwon Jeon max_dtr = card->ext_csd.hs_max_dtr; 994577fb131SSeungwon Jeon else if (max_dtr > card->csd.max_dtr) 995577fb131SSeungwon Jeon max_dtr = card->csd.max_dtr; 996577fb131SSeungwon Jeon 997577fb131SSeungwon Jeon mmc_set_clock(card->host, max_dtr); 998577fb131SSeungwon Jeon } 999577fb131SSeungwon Jeon 1000577fb131SSeungwon Jeon /* 1001577fb131SSeungwon Jeon * Select the bus width amoung 4-bit and 8-bit(SDR). 1002577fb131SSeungwon Jeon * If the bus width is changed successfully, return the selected width value. 1003577fb131SSeungwon Jeon * Zero is returned instead of error value if the wide width is not supported. 1004577fb131SSeungwon Jeon */ 1005577fb131SSeungwon Jeon static int mmc_select_bus_width(struct mmc_card *card) 1006577fb131SSeungwon Jeon { 1007a4924c71SGirish K S static unsigned ext_csd_bits[] = { 1008a4924c71SGirish K S EXT_CSD_BUS_WIDTH_8, 1009577fb131SSeungwon Jeon EXT_CSD_BUS_WIDTH_4, 1010*43444442SIvan Semenov EXT_CSD_BUS_WIDTH_1, 1011a4924c71SGirish K S }; 1012a4924c71SGirish K S static unsigned bus_widths[] = { 1013a4924c71SGirish K S MMC_BUS_WIDTH_8, 1014577fb131SSeungwon Jeon MMC_BUS_WIDTH_4, 1015*43444442SIvan Semenov MMC_BUS_WIDTH_1, 1016a4924c71SGirish K S }; 1017577fb131SSeungwon Jeon struct mmc_host *host = card->host; 1018577fb131SSeungwon Jeon unsigned idx, bus_width = 0; 1019577fb131SSeungwon Jeon int err = 0; 1020a4924c71SGirish K S 10211c2d26e3SAlexandre Belloni if (!mmc_can_ext_csd(card) || 1022577fb131SSeungwon Jeon !(host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) 1023577fb131SSeungwon Jeon return 0; 1024a4924c71SGirish K S 1025577fb131SSeungwon Jeon idx = (host->caps & MMC_CAP_8_BIT_DATA) ? 0 : 1; 1026a4924c71SGirish K S 1027a4924c71SGirish K S /* 1028a4924c71SGirish K S * Unlike SD, MMC cards dont have a configuration register to notify 1029a4924c71SGirish K S * supported bus width. So bus test command should be run to identify 1030a4924c71SGirish K S * the supported bus width or compare the ext csd values of current 1031a4924c71SGirish K S * bus width and ext csd values of 1 bit mode read earlier. 1032a4924c71SGirish K S */ 1033577fb131SSeungwon Jeon for (; idx < ARRAY_SIZE(bus_widths); idx++) { 1034a4924c71SGirish K S /* 1035a4924c71SGirish K S * Host is capable of 8bit transfer, then switch 1036a4924c71SGirish K S * the device to work in 8bit transfer mode. If the 1037a4924c71SGirish K S * mmc switch command returns error then switch to 1038a4924c71SGirish K S * 4bit transfer mode. On success set the corresponding 1039a4924c71SGirish K S * bus width on the host. 1040a4924c71SGirish K S */ 1041a4924c71SGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1042a4924c71SGirish K S EXT_CSD_BUS_WIDTH, 1043a4924c71SGirish K S ext_csd_bits[idx], 1044a4924c71SGirish K S card->ext_csd.generic_cmd6_time); 1045a4924c71SGirish K S if (err) 1046a4924c71SGirish K S continue; 1047a4924c71SGirish K S 1048577fb131SSeungwon Jeon bus_width = bus_widths[idx]; 1049577fb131SSeungwon Jeon mmc_set_bus_width(host, bus_width); 1050a4924c71SGirish K S 1051577fb131SSeungwon Jeon /* 1052577fb131SSeungwon Jeon * If controller can't handle bus width test, 1053577fb131SSeungwon Jeon * compare ext_csd previously read in 1 bit mode 1054577fb131SSeungwon Jeon * against ext_csd at new bus width 1055577fb131SSeungwon Jeon */ 1056a4924c71SGirish K S if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST)) 1057577fb131SSeungwon Jeon err = mmc_compare_ext_csds(card, bus_width); 1058a4924c71SGirish K S else 1059577fb131SSeungwon Jeon err = mmc_bus_test(card, bus_width); 1060577fb131SSeungwon Jeon 1061577fb131SSeungwon Jeon if (!err) { 1062577fb131SSeungwon Jeon err = bus_width; 1063a4924c71SGirish K S break; 1064577fb131SSeungwon Jeon } else { 1065577fb131SSeungwon Jeon pr_warn("%s: switch to bus width %d failed\n", 1066ed9feec7SWolfram Sang mmc_hostname(host), 1 << bus_width); 1067577fb131SSeungwon Jeon } 1068a4924c71SGirish K S } 1069a4924c71SGirish K S 1070577fb131SSeungwon Jeon return err; 1071577fb131SSeungwon Jeon } 1072577fb131SSeungwon Jeon 1073577fb131SSeungwon Jeon /* 1074577fb131SSeungwon Jeon * Switch to the high-speed mode 1075577fb131SSeungwon Jeon */ 1076577fb131SSeungwon Jeon static int mmc_select_hs(struct mmc_card *card) 1077577fb131SSeungwon Jeon { 1078577fb131SSeungwon Jeon int err; 1079577fb131SSeungwon Jeon 10804509f847SUlf Hansson err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1081577fb131SSeungwon Jeon EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS, 108253e60650SUlf Hansson card->ext_csd.generic_cmd6_time, MMC_TIMING_MMC_HS, 10835e52a168SBean Huo true, true, MMC_CMD_RETRIES); 108467d35960SJungseung Lee if (err) 108567d35960SJungseung Lee pr_warn("%s: switch to high-speed failed, err:%d\n", 108667d35960SJungseung Lee mmc_hostname(card->host), err); 108767d35960SJungseung Lee 1088577fb131SSeungwon Jeon return err; 1089577fb131SSeungwon Jeon } 1090577fb131SSeungwon Jeon 1091577fb131SSeungwon Jeon /* 1092577fb131SSeungwon Jeon * Activate wide bus and DDR if supported. 1093577fb131SSeungwon Jeon */ 1094577fb131SSeungwon Jeon static int mmc_select_hs_ddr(struct mmc_card *card) 1095577fb131SSeungwon Jeon { 1096577fb131SSeungwon Jeon struct mmc_host *host = card->host; 1097577fb131SSeungwon Jeon u32 bus_width, ext_csd_bits; 1098577fb131SSeungwon Jeon int err = 0; 1099577fb131SSeungwon Jeon 1100577fb131SSeungwon Jeon if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52)) 1101577fb131SSeungwon Jeon return 0; 1102577fb131SSeungwon Jeon 1103577fb131SSeungwon Jeon bus_width = host->ios.bus_width; 1104577fb131SSeungwon Jeon if (bus_width == MMC_BUS_WIDTH_1) 1105577fb131SSeungwon Jeon return 0; 1106577fb131SSeungwon Jeon 1107577fb131SSeungwon Jeon ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? 1108577fb131SSeungwon Jeon EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; 1109577fb131SSeungwon Jeon 1110e173f891SUlf Hansson err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1111577fb131SSeungwon Jeon EXT_CSD_BUS_WIDTH, 1112577fb131SSeungwon Jeon ext_csd_bits, 1113e173f891SUlf Hansson card->ext_csd.generic_cmd6_time, 1114e173f891SUlf Hansson MMC_TIMING_MMC_DDR52, 11155e52a168SBean Huo true, true, MMC_CMD_RETRIES); 1116577fb131SSeungwon Jeon if (err) { 11174b75bffcSAndrew Gabbasov pr_err("%s: switch to bus width %d ddr failed\n", 1118577fb131SSeungwon Jeon mmc_hostname(host), 1 << bus_width); 1119577fb131SSeungwon Jeon return err; 1120577fb131SSeungwon Jeon } 1121577fb131SSeungwon Jeon 1122577fb131SSeungwon Jeon /* 1123577fb131SSeungwon Jeon * eMMC cards can support 3.3V to 1.2V i/o (vccq) 1124577fb131SSeungwon Jeon * signaling. 1125577fb131SSeungwon Jeon * 1126577fb131SSeungwon Jeon * EXT_CSD_CARD_TYPE_DDR_1_8V means 3.3V or 1.8V vccq. 1127577fb131SSeungwon Jeon * 1128577fb131SSeungwon Jeon * 1.8V vccq at 3.3V core voltage (vcc) is not required 1129577fb131SSeungwon Jeon * in the JEDEC spec for DDR. 1130577fb131SSeungwon Jeon * 1131312449efSChuanxiao.Dong * Even (e)MMC card can support 3.3v to 1.2v vccq, but not all 1132312449efSChuanxiao.Dong * host controller can support this, like some of the SDHCI 1133312449efSChuanxiao.Dong * controller which connect to an eMMC device. Some of these 1134312449efSChuanxiao.Dong * host controller still needs to use 1.8v vccq for supporting 1135312449efSChuanxiao.Dong * DDR mode. 1136312449efSChuanxiao.Dong * 1137312449efSChuanxiao.Dong * So the sequence will be: 1138312449efSChuanxiao.Dong * if (host and device can both support 1.2v IO) 1139312449efSChuanxiao.Dong * use 1.2v IO; 1140312449efSChuanxiao.Dong * else if (host and device can both support 1.8v IO) 1141312449efSChuanxiao.Dong * use 1.8v IO; 1142312449efSChuanxiao.Dong * so if host and device can only support 3.3v IO, this is the 1143312449efSChuanxiao.Dong * last choice. 1144577fb131SSeungwon Jeon * 1145577fb131SSeungwon Jeon * WARNING: eMMC rules are NOT the same as SD DDR 1146577fb131SSeungwon Jeon */ 114720f921bbSUlf Hansson if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_2V) { 11484e74b6b3SUlf Hansson err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); 114920f921bbSUlf Hansson if (!err) 115020f921bbSUlf Hansson return 0; 115120f921bbSUlf Hansson } 1152577fb131SSeungwon Jeon 115320f921bbSUlf Hansson if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_8V && 115420f921bbSUlf Hansson host->caps & MMC_CAP_1_8V_DDR) 11554e74b6b3SUlf Hansson err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); 1156312449efSChuanxiao.Dong 1157312449efSChuanxiao.Dong /* make sure vccq is 3.3v after switching disaster */ 1158312449efSChuanxiao.Dong if (err) 11594e74b6b3SUlf Hansson err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330); 1160312449efSChuanxiao.Dong 1161577fb131SSeungwon Jeon return err; 1162577fb131SSeungwon Jeon } 1163577fb131SSeungwon Jeon 11640a5b6438SSeungwon Jeon static int mmc_select_hs400(struct mmc_card *card) 11650a5b6438SSeungwon Jeon { 11660a5b6438SSeungwon Jeon struct mmc_host *host = card->host; 116751b12f77SAdrian Hunter unsigned int max_dtr; 11680a5b6438SSeungwon Jeon int err = 0; 1169cc4f414cSAdrian Hunter u8 val; 11700a5b6438SSeungwon Jeon 11710a5b6438SSeungwon Jeon /* 11720a5b6438SSeungwon Jeon * HS400 mode requires 8-bit bus width 11730a5b6438SSeungwon Jeon */ 11740a5b6438SSeungwon Jeon if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 && 11750a5b6438SSeungwon Jeon host->ios.bus_width == MMC_BUS_WIDTH_8)) 11760a5b6438SSeungwon Jeon return 0; 11770a5b6438SSeungwon Jeon 117851b12f77SAdrian Hunter /* Switch card to HS mode */ 1179adb24d42SWenkai Du val = EXT_CSD_TIMING_HS; 11800a5b6438SSeungwon Jeon err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1181cc4f414cSAdrian Hunter EXT_CSD_HS_TIMING, val, 1182aa33ce3cSUlf Hansson card->ext_csd.generic_cmd6_time, 0, 11835e52a168SBean Huo false, true, MMC_CMD_RETRIES); 11840a5b6438SSeungwon Jeon if (err) { 11854b75bffcSAndrew Gabbasov pr_err("%s: switch to high-speed from hs200 failed, err:%d\n", 11860a5b6438SSeungwon Jeon mmc_hostname(host), err); 11870a5b6438SSeungwon Jeon return err; 11880a5b6438SSeungwon Jeon } 11890a5b6438SSeungwon Jeon 1190ba6c7ac3SSimon Horman /* Prepare host to downgrade to HS timing */ 1191ba6c7ac3SSimon Horman if (host->ops->hs400_downgrade) 1192ba6c7ac3SSimon Horman host->ops->hs400_downgrade(host); 1193ba6c7ac3SSimon Horman 119424fdcb37SWolfram Sang /* Set host controller to HS timing */ 1195452f553eSWolfram Sang mmc_set_timing(host, MMC_TIMING_MMC_HS); 119624fdcb37SWolfram Sang 1197649c6059SZiyuan Xu /* Reduce frequency to HS frequency */ 1198649c6059SZiyuan Xu max_dtr = card->ext_csd.hs_max_dtr; 1199649c6059SZiyuan Xu mmc_set_clock(host, max_dtr); 1200649c6059SZiyuan Xu 120160db8a47SUlf Hansson err = mmc_switch_status(card, true); 1202d2302933SAdrian Hunter if (err) 1203d2302933SAdrian Hunter goto out_err; 1204d2302933SAdrian Hunter 1205cc14eec0SYinbo Zhu if (host->ops->hs400_prepare_ddr) 1206cc14eec0SYinbo Zhu host->ops->hs400_prepare_ddr(host); 1207cc14eec0SYinbo Zhu 1208d2302933SAdrian Hunter /* Switch card to DDR */ 12090a5b6438SSeungwon Jeon err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 12100a5b6438SSeungwon Jeon EXT_CSD_BUS_WIDTH, 12110a5b6438SSeungwon Jeon EXT_CSD_DDR_BUS_WIDTH_8, 12120a5b6438SSeungwon Jeon card->ext_csd.generic_cmd6_time); 12130a5b6438SSeungwon Jeon if (err) { 12144b75bffcSAndrew Gabbasov pr_err("%s: switch to bus width for hs400 failed, err:%d\n", 12150a5b6438SSeungwon Jeon mmc_hostname(host), err); 12160a5b6438SSeungwon Jeon return err; 12170a5b6438SSeungwon Jeon } 12180a5b6438SSeungwon Jeon 1219d2302933SAdrian Hunter /* Switch card to HS400 */ 1220cc4f414cSAdrian Hunter val = EXT_CSD_TIMING_HS400 | 1221cc4f414cSAdrian Hunter card->drive_strength << EXT_CSD_DRV_STR_SHIFT; 12220a5b6438SSeungwon Jeon err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1223cc4f414cSAdrian Hunter EXT_CSD_HS_TIMING, val, 1224aa33ce3cSUlf Hansson card->ext_csd.generic_cmd6_time, 0, 12255e52a168SBean Huo false, true, MMC_CMD_RETRIES); 12260a5b6438SSeungwon Jeon if (err) { 12274b75bffcSAndrew Gabbasov pr_err("%s: switch to hs400 failed, err:%d\n", 12280a5b6438SSeungwon Jeon mmc_hostname(host), err); 12290a5b6438SSeungwon Jeon return err; 12300a5b6438SSeungwon Jeon } 12310a5b6438SSeungwon Jeon 1232d2302933SAdrian Hunter /* Set host controller to HS400 timing and frequency */ 12330a5b6438SSeungwon Jeon mmc_set_timing(host, MMC_TIMING_MMC_HS400); 12340a5b6438SSeungwon Jeon mmc_set_bus_speed(card); 12350a5b6438SSeungwon Jeon 1236f614fb60SWenbin Mei if (host->ops->execute_hs400_tuning) { 1237f614fb60SWenbin Mei mmc_retune_disable(host); 1238f614fb60SWenbin Mei err = host->ops->execute_hs400_tuning(host, card); 1239f614fb60SWenbin Mei mmc_retune_enable(host); 1240f614fb60SWenbin Mei if (err) 1241f614fb60SWenbin Mei goto out_err; 1242f614fb60SWenbin Mei } 1243f614fb60SWenbin Mei 1244b0e370b9SWolfram Sang if (host->ops->hs400_complete) 1245b0e370b9SWolfram Sang host->ops->hs400_complete(host); 1246b0e370b9SWolfram Sang 124760db8a47SUlf Hansson err = mmc_switch_status(card, true); 1248d2302933SAdrian Hunter if (err) 1249d2302933SAdrian Hunter goto out_err; 1250d2302933SAdrian Hunter 12510a5b6438SSeungwon Jeon return 0; 1252d2302933SAdrian Hunter 1253d2302933SAdrian Hunter out_err: 1254d2302933SAdrian Hunter pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), 1255d2302933SAdrian Hunter __func__, err); 1256d2302933SAdrian Hunter return err; 12570a5b6438SSeungwon Jeon } 12580a5b6438SSeungwon Jeon 12596376f69dSAdrian Hunter int mmc_hs200_to_hs400(struct mmc_card *card) 12606376f69dSAdrian Hunter { 12616376f69dSAdrian Hunter return mmc_select_hs400(card); 12626376f69dSAdrian Hunter } 12636376f69dSAdrian Hunter 12646376f69dSAdrian Hunter int mmc_hs400_to_hs200(struct mmc_card *card) 12656376f69dSAdrian Hunter { 12666376f69dSAdrian Hunter struct mmc_host *host = card->host; 12676376f69dSAdrian Hunter unsigned int max_dtr; 12686376f69dSAdrian Hunter int err; 1269cc4f414cSAdrian Hunter u8 val; 12706376f69dSAdrian Hunter 12716376f69dSAdrian Hunter /* Reduce frequency to HS */ 12726376f69dSAdrian Hunter max_dtr = card->ext_csd.hs_max_dtr; 12736376f69dSAdrian Hunter mmc_set_clock(host, max_dtr); 12746376f69dSAdrian Hunter 12756376f69dSAdrian Hunter /* Switch HS400 to HS DDR */ 1276adb24d42SWenkai Du val = EXT_CSD_TIMING_HS; 12776376f69dSAdrian Hunter err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, 1278aa33ce3cSUlf Hansson val, card->ext_csd.generic_cmd6_time, 0, 12795e52a168SBean Huo false, true, MMC_CMD_RETRIES); 12806376f69dSAdrian Hunter if (err) 12816376f69dSAdrian Hunter goto out_err; 12826376f69dSAdrian Hunter 128324fdcb37SWolfram Sang if (host->ops->hs400_downgrade) 128424fdcb37SWolfram Sang host->ops->hs400_downgrade(host); 128524fdcb37SWolfram Sang 12866376f69dSAdrian Hunter mmc_set_timing(host, MMC_TIMING_MMC_DDR52); 12876376f69dSAdrian Hunter 128860db8a47SUlf Hansson err = mmc_switch_status(card, true); 12896376f69dSAdrian Hunter if (err) 12906376f69dSAdrian Hunter goto out_err; 12916376f69dSAdrian Hunter 12926376f69dSAdrian Hunter /* Switch HS DDR to HS */ 12936376f69dSAdrian Hunter err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BUS_WIDTH, 12946376f69dSAdrian Hunter EXT_CSD_BUS_WIDTH_8, card->ext_csd.generic_cmd6_time, 12955e52a168SBean Huo 0, false, true, MMC_CMD_RETRIES); 12966376f69dSAdrian Hunter if (err) 12976376f69dSAdrian Hunter goto out_err; 12986376f69dSAdrian Hunter 12996376f69dSAdrian Hunter mmc_set_timing(host, MMC_TIMING_MMC_HS); 13006376f69dSAdrian Hunter 130160db8a47SUlf Hansson err = mmc_switch_status(card, true); 13026376f69dSAdrian Hunter if (err) 13036376f69dSAdrian Hunter goto out_err; 13046376f69dSAdrian Hunter 13056376f69dSAdrian Hunter /* Switch HS to HS200 */ 1306cc4f414cSAdrian Hunter val = EXT_CSD_TIMING_HS200 | 1307cc4f414cSAdrian Hunter card->drive_strength << EXT_CSD_DRV_STR_SHIFT; 13086376f69dSAdrian Hunter err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, 1309aa33ce3cSUlf Hansson val, card->ext_csd.generic_cmd6_time, 0, 13105e52a168SBean Huo false, true, MMC_CMD_RETRIES); 13116376f69dSAdrian Hunter if (err) 13126376f69dSAdrian Hunter goto out_err; 13136376f69dSAdrian Hunter 13146376f69dSAdrian Hunter mmc_set_timing(host, MMC_TIMING_MMC_HS200); 13156376f69dSAdrian Hunter 1316ef3d2322SAdrian Hunter /* 1317ef3d2322SAdrian Hunter * For HS200, CRC errors are not a reliable way to know the switch 1318ef3d2322SAdrian Hunter * failed. If there really is a problem, we would expect tuning will 1319ef3d2322SAdrian Hunter * fail and the result ends up the same. 1320ef3d2322SAdrian Hunter */ 132160db8a47SUlf Hansson err = mmc_switch_status(card, false); 13226376f69dSAdrian Hunter if (err) 13236376f69dSAdrian Hunter goto out_err; 13246376f69dSAdrian Hunter 13256376f69dSAdrian Hunter mmc_set_bus_speed(card); 13266376f69dSAdrian Hunter 1327c8a4e30dSUlf Hansson /* Prepare tuning for HS400 mode. */ 1328c8a4e30dSUlf Hansson if (host->ops->prepare_hs400_tuning) 1329c8a4e30dSUlf Hansson host->ops->prepare_hs400_tuning(host, &host->ios); 1330c8a4e30dSUlf Hansson 13316376f69dSAdrian Hunter return 0; 13326376f69dSAdrian Hunter 13336376f69dSAdrian Hunter out_err: 13346376f69dSAdrian Hunter pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), 13356376f69dSAdrian Hunter __func__, err); 13366376f69dSAdrian Hunter return err; 13376376f69dSAdrian Hunter } 13386376f69dSAdrian Hunter 1339fb458864SChanho Min static void mmc_select_driver_type(struct mmc_card *card) 1340fb458864SChanho Min { 1341be17f1ceSWolfram Sang int card_drv_type, drive_strength, drv_type = 0; 13426186d06cSWolfram Sang int fixed_drv_type = card->host->fixed_drv_type; 1343fb458864SChanho Min 1344fb458864SChanho Min card_drv_type = card->ext_csd.raw_driver_strength | 1345fb458864SChanho Min mmc_driver_type_mask(0); 1346fb458864SChanho Min 13476186d06cSWolfram Sang if (fixed_drv_type >= 0) 13486186d06cSWolfram Sang drive_strength = card_drv_type & mmc_driver_type_mask(fixed_drv_type) 13496186d06cSWolfram Sang ? fixed_drv_type : 0; 13506186d06cSWolfram Sang else 1351fb458864SChanho Min drive_strength = mmc_select_drive_strength(card, 1352fb458864SChanho Min card->ext_csd.hs200_max_dtr, 1353fb458864SChanho Min card_drv_type, &drv_type); 1354fb458864SChanho Min 1355fb458864SChanho Min card->drive_strength = drive_strength; 1356fb458864SChanho Min 1357fb458864SChanho Min if (drv_type) 1358fb458864SChanho Min mmc_set_driver_type(card->host, drv_type); 1359fb458864SChanho Min } 1360fb458864SChanho Min 136181ac2af6SShawn Lin static int mmc_select_hs400es(struct mmc_card *card) 136281ac2af6SShawn Lin { 136381ac2af6SShawn Lin struct mmc_host *host = card->host; 136492ddd959SHaibo Chen int err = -EINVAL; 136581ac2af6SShawn Lin u8 val; 136681ac2af6SShawn Lin 13671720d354SShawn Lin if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400_1_2V) 13684e74b6b3SUlf Hansson err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); 13691720d354SShawn Lin 13701720d354SShawn Lin if (err && card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400_1_8V) 13714e74b6b3SUlf Hansson err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); 13721720d354SShawn Lin 13731720d354SShawn Lin /* If fails try again during next card power cycle */ 13741720d354SShawn Lin if (err) 13751720d354SShawn Lin goto out_err; 13761720d354SShawn Lin 137781ac2af6SShawn Lin err = mmc_select_bus_width(card); 13787f38abf2SHongjie Fang if (err != MMC_BUS_WIDTH_8) { 13797f38abf2SHongjie Fang pr_err("%s: switch to 8bit bus width failed, err:%d\n", 13807f38abf2SHongjie Fang mmc_hostname(host), err); 13817f38abf2SHongjie Fang err = err < 0 ? err : -ENOTSUPP; 138281ac2af6SShawn Lin goto out_err; 13837f38abf2SHongjie Fang } 138481ac2af6SShawn Lin 138581ac2af6SShawn Lin /* Switch card to HS mode */ 138653e60650SUlf Hansson err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 138753e60650SUlf Hansson EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS, 138853e60650SUlf Hansson card->ext_csd.generic_cmd6_time, 0, 13895e52a168SBean Huo false, true, MMC_CMD_RETRIES); 139053e60650SUlf Hansson if (err) { 139153e60650SUlf Hansson pr_err("%s: switch to hs for hs400es failed, err:%d\n", 139253e60650SUlf Hansson mmc_hostname(host), err); 139353e60650SUlf Hansson goto out_err; 139453e60650SUlf Hansson } 139553e60650SUlf Hansson 13964bc31edeSBrian Norris /* 13974bc31edeSBrian Norris * Bump to HS timing and frequency. Some cards don't handle 13984bc31edeSBrian Norris * SEND_STATUS reliably at the initial frequency. 13994bc31edeSBrian Norris */ 140053e60650SUlf Hansson mmc_set_timing(host, MMC_TIMING_MMC_HS); 14014bc31edeSBrian Norris mmc_set_bus_speed(card); 14024bc31edeSBrian Norris 140360db8a47SUlf Hansson err = mmc_switch_status(card, true); 140467d35960SJungseung Lee if (err) 140581ac2af6SShawn Lin goto out_err; 140681ac2af6SShawn Lin 140781ac2af6SShawn Lin /* Switch card to DDR with strobe bit */ 140881ac2af6SShawn Lin val = EXT_CSD_DDR_BUS_WIDTH_8 | EXT_CSD_BUS_WIDTH_STROBE; 140981ac2af6SShawn Lin err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 141081ac2af6SShawn Lin EXT_CSD_BUS_WIDTH, 141181ac2af6SShawn Lin val, 141281ac2af6SShawn Lin card->ext_csd.generic_cmd6_time); 141381ac2af6SShawn Lin if (err) { 141481ac2af6SShawn Lin pr_err("%s: switch to bus width for hs400es failed, err:%d\n", 141581ac2af6SShawn Lin mmc_hostname(host), err); 141681ac2af6SShawn Lin goto out_err; 141781ac2af6SShawn Lin } 141881ac2af6SShawn Lin 1419fb458864SChanho Min mmc_select_driver_type(card); 1420fb458864SChanho Min 142181ac2af6SShawn Lin /* Switch card to HS400 */ 142281ac2af6SShawn Lin val = EXT_CSD_TIMING_HS400 | 142381ac2af6SShawn Lin card->drive_strength << EXT_CSD_DRV_STR_SHIFT; 142481ac2af6SShawn Lin err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 142581ac2af6SShawn Lin EXT_CSD_HS_TIMING, val, 1426aa33ce3cSUlf Hansson card->ext_csd.generic_cmd6_time, 0, 14275e52a168SBean Huo false, true, MMC_CMD_RETRIES); 142881ac2af6SShawn Lin if (err) { 142981ac2af6SShawn Lin pr_err("%s: switch to hs400es failed, err:%d\n", 143081ac2af6SShawn Lin mmc_hostname(host), err); 143181ac2af6SShawn Lin goto out_err; 143281ac2af6SShawn Lin } 143381ac2af6SShawn Lin 143481ac2af6SShawn Lin /* Set host controller to HS400 timing and frequency */ 143581ac2af6SShawn Lin mmc_set_timing(host, MMC_TIMING_MMC_HS400); 143681ac2af6SShawn Lin 143781ac2af6SShawn Lin /* Controller enable enhanced strobe function */ 143881ac2af6SShawn Lin host->ios.enhanced_strobe = true; 143981ac2af6SShawn Lin if (host->ops->hs400_enhanced_strobe) 144081ac2af6SShawn Lin host->ops->hs400_enhanced_strobe(host, &host->ios); 144181ac2af6SShawn Lin 144260db8a47SUlf Hansson err = mmc_switch_status(card, true); 144381ac2af6SShawn Lin if (err) 144481ac2af6SShawn Lin goto out_err; 144581ac2af6SShawn Lin 144681ac2af6SShawn Lin return 0; 144781ac2af6SShawn Lin 144881ac2af6SShawn Lin out_err: 144981ac2af6SShawn Lin pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), 145081ac2af6SShawn Lin __func__, err); 145181ac2af6SShawn Lin return err; 145281ac2af6SShawn Lin } 145381ac2af6SShawn Lin 1454577fb131SSeungwon Jeon /* 1455577fb131SSeungwon Jeon * For device supporting HS200 mode, the following sequence 1456577fb131SSeungwon Jeon * should be done before executing the tuning process. 1457577fb131SSeungwon Jeon * 1. set the desired bus width(4-bit or 8-bit, 1-bit is not supported) 1458577fb131SSeungwon Jeon * 2. switch to HS200 mode 1459577fb131SSeungwon Jeon * 3. set the clock to > 52Mhz and <=200MHz 1460577fb131SSeungwon Jeon */ 1461577fb131SSeungwon Jeon static int mmc_select_hs200(struct mmc_card *card) 1462577fb131SSeungwon Jeon { 1463577fb131SSeungwon Jeon struct mmc_host *host = card->host; 14644bc31edeSBrian Norris unsigned int old_timing, old_signal_voltage, old_clock; 1465577fb131SSeungwon Jeon int err = -EINVAL; 1466cc4f414cSAdrian Hunter u8 val; 1467577fb131SSeungwon Jeon 1468e51534c8SDong Aisheng old_signal_voltage = host->ios.signal_voltage; 1469577fb131SSeungwon Jeon if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_2V) 14704e74b6b3SUlf Hansson err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); 1471577fb131SSeungwon Jeon 1472577fb131SSeungwon Jeon if (err && card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_8V) 14734e74b6b3SUlf Hansson err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); 1474577fb131SSeungwon Jeon 1475577fb131SSeungwon Jeon /* If fails try again during next card power cycle */ 1476577fb131SSeungwon Jeon if (err) 1477e51534c8SDong Aisheng return err; 1478577fb131SSeungwon Jeon 1479cc4f414cSAdrian Hunter mmc_select_driver_type(card); 1480cc4f414cSAdrian Hunter 1481577fb131SSeungwon Jeon /* 1482577fb131SSeungwon Jeon * Set the bus width(4 or 8) with host's support and 1483577fb131SSeungwon Jeon * switch to HS200 mode if bus width is set successfully. 1484577fb131SSeungwon Jeon */ 1485577fb131SSeungwon Jeon err = mmc_select_bus_width(card); 14868b7be8f2SPeter Griffin if (err > 0) { 1487cc4f414cSAdrian Hunter val = EXT_CSD_TIMING_HS200 | 1488cc4f414cSAdrian Hunter card->drive_strength << EXT_CSD_DRV_STR_SHIFT; 1489577fb131SSeungwon Jeon err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1490cc4f414cSAdrian Hunter EXT_CSD_HS_TIMING, val, 1491aa33ce3cSUlf Hansson card->ext_csd.generic_cmd6_time, 0, 14925e52a168SBean Huo false, true, MMC_CMD_RETRIES); 14931815e61bSAdrian Hunter if (err) 14941815e61bSAdrian Hunter goto err; 14954bc31edeSBrian Norris 14964bc31edeSBrian Norris /* 14974bc31edeSBrian Norris * Bump to HS timing and frequency. Some cards don't handle 14984bc31edeSBrian Norris * SEND_STATUS reliably at the initial frequency. 14994bc31edeSBrian Norris * NB: We can't move to full (HS200) speeds until after we've 15004bc31edeSBrian Norris * successfully switched over. 15014bc31edeSBrian Norris */ 15021815e61bSAdrian Hunter old_timing = host->ios.timing; 15034bc31edeSBrian Norris old_clock = host->ios.clock; 1504577fb131SSeungwon Jeon mmc_set_timing(host, MMC_TIMING_MMC_HS200); 15054bc31edeSBrian Norris mmc_set_clock(card->host, card->ext_csd.hs_max_dtr); 150608573eafSChaotian Jing 1507ef3d2322SAdrian Hunter /* 1508ef3d2322SAdrian Hunter * For HS200, CRC errors are not a reliable way to know the 1509ef3d2322SAdrian Hunter * switch failed. If there really is a problem, we would expect 1510ef3d2322SAdrian Hunter * tuning will fail and the result ends up the same. 1511ef3d2322SAdrian Hunter */ 151260db8a47SUlf Hansson err = mmc_switch_status(card, false); 1513ef3d2322SAdrian Hunter 15141815e61bSAdrian Hunter /* 15151815e61bSAdrian Hunter * mmc_select_timing() assumes timing has not changed if 15161815e61bSAdrian Hunter * it is a switch error. 15171815e61bSAdrian Hunter */ 15184bc31edeSBrian Norris if (err == -EBADMSG) { 15194bc31edeSBrian Norris mmc_set_clock(host, old_clock); 15201815e61bSAdrian Hunter mmc_set_timing(host, old_timing); 15211815e61bSAdrian Hunter } 15224bc31edeSBrian Norris } 1523a4924c71SGirish K S err: 1524e51534c8SDong Aisheng if (err) { 1525e51534c8SDong Aisheng /* fall back to the old signal voltage, if fails report error */ 15264e74b6b3SUlf Hansson if (mmc_set_signal_voltage(host, old_signal_voltage)) 1527e51534c8SDong Aisheng err = -EIO; 1528e51534c8SDong Aisheng 15291815e61bSAdrian Hunter pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), 15301815e61bSAdrian Hunter __func__, err); 1531e51534c8SDong Aisheng } 1532a4924c71SGirish K S return err; 1533a4924c71SGirish K S } 1534a4924c71SGirish K S 1535a4924c71SGirish K S /* 153681ac2af6SShawn Lin * Activate High Speed, HS200 or HS400ES mode if supported. 1537577fb131SSeungwon Jeon */ 1538577fb131SSeungwon Jeon static int mmc_select_timing(struct mmc_card *card) 1539577fb131SSeungwon Jeon { 1540577fb131SSeungwon Jeon int err = 0; 1541577fb131SSeungwon Jeon 1542148bcab2SUlf Hansson if (!mmc_can_ext_csd(card)) 1543577fb131SSeungwon Jeon goto bus_speed; 1544577fb131SSeungwon Jeon 15453b6c4728SUlf Hansson if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400ES) { 154681ac2af6SShawn Lin err = mmc_select_hs400es(card); 15473b6c4728SUlf Hansson goto out; 15483b6c4728SUlf Hansson } 15493b6c4728SUlf Hansson 15503b6c4728SUlf Hansson if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200) { 1551577fb131SSeungwon Jeon err = mmc_select_hs200(card); 15523b6c4728SUlf Hansson if (err == -EBADMSG) 15533b6c4728SUlf Hansson card->mmc_avail_type &= ~EXT_CSD_CARD_TYPE_HS200; 15543b6c4728SUlf Hansson else 15553b6c4728SUlf Hansson goto out; 15563b6c4728SUlf Hansson } 15573b6c4728SUlf Hansson 15583b6c4728SUlf Hansson if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS) 1559577fb131SSeungwon Jeon err = mmc_select_hs(card); 1560577fb131SSeungwon Jeon 15613b6c4728SUlf Hansson out: 1562577fb131SSeungwon Jeon if (err && err != -EBADMSG) 1563577fb131SSeungwon Jeon return err; 1564577fb131SSeungwon Jeon 1565577fb131SSeungwon Jeon bus_speed: 1566577fb131SSeungwon Jeon /* 1567577fb131SSeungwon Jeon * Set the bus speed to the selected bus timing. 1568577fb131SSeungwon Jeon * If timing is not selected, backward compatible is the default. 1569577fb131SSeungwon Jeon */ 1570577fb131SSeungwon Jeon mmc_set_bus_speed(card); 15710400ed0aSDong Aisheng return 0; 1572577fb131SSeungwon Jeon } 1573577fb131SSeungwon Jeon 1574577fb131SSeungwon Jeon /* 1575577fb131SSeungwon Jeon * Execute tuning sequence to seek the proper bus operating 15760a5b6438SSeungwon Jeon * conditions for HS200 and HS400, which sends CMD21 to the device. 1577577fb131SSeungwon Jeon */ 1578577fb131SSeungwon Jeon static int mmc_hs200_tuning(struct mmc_card *card) 1579577fb131SSeungwon Jeon { 1580577fb131SSeungwon Jeon struct mmc_host *host = card->host; 1581577fb131SSeungwon Jeon 15820a5b6438SSeungwon Jeon /* 15830a5b6438SSeungwon Jeon * Timing should be adjusted to the HS400 target 15840a5b6438SSeungwon Jeon * operation frequency for tuning process 15850a5b6438SSeungwon Jeon */ 15860a5b6438SSeungwon Jeon if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 && 15870a5b6438SSeungwon Jeon host->ios.bus_width == MMC_BUS_WIDTH_8) 15880a5b6438SSeungwon Jeon if (host->ops->prepare_hs400_tuning) 15890a5b6438SSeungwon Jeon host->ops->prepare_hs400_tuning(host, &host->ios); 15900a5b6438SSeungwon Jeon 159163e415c6SAdrian Hunter return mmc_execute_tuning(card); 1592577fb131SSeungwon Jeon } 1593577fb131SSeungwon Jeon 1594577fb131SSeungwon Jeon /* 15956abaa0c9SPierre Ossman * Handle the detection and initialisation of a card. 15966abaa0c9SPierre Ossman * 15978769392bSDeepak Saxena * In the case of a resume, "oldcard" will contain the card 15986abaa0c9SPierre Ossman * we're trying to reinitialise. 15997ea239d9SPierre Ossman */ 16008c75deaeSPierre Ossman static int mmc_init_card(struct mmc_host *host, u32 ocr, 16016abaa0c9SPierre Ossman struct mmc_card *oldcard) 16027ea239d9SPierre Ossman { 16037ea239d9SPierre Ossman struct mmc_card *card; 1604577fb131SSeungwon Jeon int err; 16057ea239d9SPierre Ossman u32 cid[4]; 1606b676f039SPhilip Rakity u32 rocr; 16077ea239d9SPierre Ossman 1608d84075c8SPierre Ossman WARN_ON(!host->claimed); 16097ea239d9SPierre Ossman 161044669034SStefan Nilsson XK /* Set correct bus mode for MMC before attempting init */ 161144669034SStefan Nilsson XK if (!mmc_host_is_spi(host)) 161244669034SStefan Nilsson XK mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); 161344669034SStefan Nilsson XK 16147ea239d9SPierre Ossman /* 16157ea239d9SPierre Ossman * Since we're changing the OCR value, we seem to 16167ea239d9SPierre Ossman * need to tell some cards to go back to the idle 16177ea239d9SPierre Ossman * state. We wait 1ms to give cards time to 16187ea239d9SPierre Ossman * respond. 1619c3805467SBalaji T K * mmc_go_idle is needed for eMMC that are asleep 16207ea239d9SPierre Ossman */ 16217ea239d9SPierre Ossman mmc_go_idle(host); 16227ea239d9SPierre Ossman 16237ea239d9SPierre Ossman /* The extra bit indicates that we support high capacity */ 1624b676f039SPhilip Rakity err = mmc_send_op_cond(host, ocr | (1 << 30), &rocr); 162517b0429dSPierre Ossman if (err) 16266abaa0c9SPierre Ossman goto err; 16277ea239d9SPierre Ossman 16287ea239d9SPierre Ossman /* 1629af517150SDavid Brownell * For SPI, enable CRC as appropriate. 1630af517150SDavid Brownell */ 1631af517150SDavid Brownell if (mmc_host_is_spi(host)) { 1632af517150SDavid Brownell err = mmc_spi_set_crc(host, use_spi_crc); 1633af517150SDavid Brownell if (err) 1634af517150SDavid Brownell goto err; 1635af517150SDavid Brownell } 1636af517150SDavid Brownell 1637af517150SDavid Brownell /* 16387ea239d9SPierre Ossman * Fetch CID from card. 16397ea239d9SPierre Ossman */ 1640af517150SDavid Brownell err = mmc_send_cid(host, cid); 164117b0429dSPierre Ossman if (err) 16427ea239d9SPierre Ossman goto err; 16437ea239d9SPierre Ossman 16446abaa0c9SPierre Ossman if (oldcard) { 1645adf66a0dSPierre Ossman if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) { 1646099b6481Shongjiefang pr_debug("%s: Perhaps the card was replaced\n", 1647099b6481Shongjiefang mmc_hostname(host)); 1648adf66a0dSPierre Ossman err = -ENOENT; 16496abaa0c9SPierre Ossman goto err; 1650adf66a0dSPierre Ossman } 16516abaa0c9SPierre Ossman 16526abaa0c9SPierre Ossman card = oldcard; 16536abaa0c9SPierre Ossman } else { 16547ea239d9SPierre Ossman /* 16557ea239d9SPierre Ossman * Allocate card structure. 16567ea239d9SPierre Ossman */ 165751ec92e2SPierre Ossman card = mmc_alloc_card(host, &mmc_type); 1658adf66a0dSPierre Ossman if (IS_ERR(card)) { 1659adf66a0dSPierre Ossman err = PTR_ERR(card); 16607ea239d9SPierre Ossman goto err; 1661adf66a0dSPierre Ossman } 16627ea239d9SPierre Ossman 166369041150SUlf Hansson card->ocr = ocr; 16647ea239d9SPierre Ossman card->type = MMC_TYPE_MMC; 16657ea239d9SPierre Ossman card->rca = 1; 16667ea239d9SPierre Ossman memcpy(card->raw_cid, cid, sizeof(card->raw_cid)); 16676abaa0c9SPierre Ossman } 16687ea239d9SPierre Ossman 16697ea239d9SPierre Ossman /* 1670eac86321SDoug Anderson * Call the optional HC's init_card function to handle quirks. 1671eac86321SDoug Anderson */ 1672eac86321SDoug Anderson if (host->ops->init_card) 1673eac86321SDoug Anderson host->ops->init_card(host, card); 1674eac86321SDoug Anderson 1675eac86321SDoug Anderson /* 1676af517150SDavid Brownell * For native busses: set card RCA and quit open drain mode. 16777ea239d9SPierre Ossman */ 1678af517150SDavid Brownell if (!mmc_host_is_spi(host)) { 16797ea239d9SPierre Ossman err = mmc_set_relative_addr(card); 168017b0429dSPierre Ossman if (err) 16817ea239d9SPierre Ossman goto free_card; 16827ea239d9SPierre Ossman 16837ea239d9SPierre Ossman mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL); 1684af517150SDavid Brownell } 16857ea239d9SPierre Ossman 16866abaa0c9SPierre Ossman if (!oldcard) { 16877ea239d9SPierre Ossman /* 16887ea239d9SPierre Ossman * Fetch CSD from card. 16897ea239d9SPierre Ossman */ 16907ea239d9SPierre Ossman err = mmc_send_csd(card, card->raw_csd); 169117b0429dSPierre Ossman if (err) 16927ea239d9SPierre Ossman goto free_card; 16937ea239d9SPierre Ossman 1694bd766312SPierre Ossman err = mmc_decode_csd(card); 1695adf66a0dSPierre Ossman if (err) 1696bd766312SPierre Ossman goto free_card; 1697bd766312SPierre Ossman err = mmc_decode_cid(card); 1698adf66a0dSPierre Ossman if (err) 1699bd766312SPierre Ossman goto free_card; 17006abaa0c9SPierre Ossman } 17017ea239d9SPierre Ossman 17027ea239d9SPierre Ossman /* 17033d705d14SSascha Hauer * handling only for cards supporting DSR and hosts requesting 17043d705d14SSascha Hauer * DSR configuration 17053d705d14SSascha Hauer */ 17063d705d14SSascha Hauer if (card->csd.dsr_imp && host->dsr_req) 17073d705d14SSascha Hauer mmc_set_dsr(host); 17083d705d14SSascha Hauer 17093d705d14SSascha Hauer /* 171089a73cf5SPierre Ossman * Select card, as all following commands rely on that. 17117ea239d9SPierre Ossman */ 1712af517150SDavid Brownell if (!mmc_host_is_spi(host)) { 17137ea239d9SPierre Ossman err = mmc_select_card(card); 171417b0429dSPierre Ossman if (err) 17157ea239d9SPierre Ossman goto free_card; 1716af517150SDavid Brownell } 17177ea239d9SPierre Ossman 17186abaa0c9SPierre Ossman if (!oldcard) { 1719076ec38aSUlf Hansson /* Read extended CSD. */ 1720076ec38aSUlf Hansson err = mmc_read_ext_csd(card); 172117b0429dSPierre Ossman if (err) 17227ea239d9SPierre Ossman goto free_card; 1723b676f039SPhilip Rakity 172487e88659SMasahiro Yamada /* 172587e88659SMasahiro Yamada * If doing byte addressing, check if required to do sector 1726b676f039SPhilip Rakity * addressing. Handle the case of <2GB cards needing sector 1727b676f039SPhilip Rakity * addressing. See section 8.1 JEDEC Standard JED84-A441; 1728b676f039SPhilip Rakity * ocr register has bit 30 set for sector addressing. 1729b676f039SPhilip Rakity */ 173087e88659SMasahiro Yamada if (rocr & BIT(30)) 1731b676f039SPhilip Rakity mmc_card_set_blockaddr(card); 1732b676f039SPhilip Rakity 1733dfe86cbaSAdrian Hunter /* Erase size depends on CSD and Extended CSD */ 1734dfe86cbaSAdrian Hunter mmc_set_erase_size(card); 17356abaa0c9SPierre Ossman } 17367ea239d9SPierre Ossman 1737d2a47176SUlf Hansson /* Enable ERASE_GRP_DEF. This bit is lost after a reset or power off. */ 1738d2a47176SUlf Hansson if (card->ext_csd.rev >= 3) { 1739709de99dSChuanxiao Dong err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1740b23cf0bdSSeungwon Jeon EXT_CSD_ERASE_GROUP_DEF, 1, 1741b23cf0bdSSeungwon Jeon card->ext_csd.generic_cmd6_time); 1742709de99dSChuanxiao Dong 1743709de99dSChuanxiao Dong if (err && err != -EBADMSG) 1744709de99dSChuanxiao Dong goto free_card; 1745709de99dSChuanxiao Dong 1746709de99dSChuanxiao Dong if (err) { 1747709de99dSChuanxiao Dong /* 1748709de99dSChuanxiao Dong * Just disable enhanced area off & sz 1749709de99dSChuanxiao Dong * will try to enable ERASE_GROUP_DEF 1750709de99dSChuanxiao Dong * during next time reinit 1751709de99dSChuanxiao Dong */ 1752709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset = -EINVAL; 1753709de99dSChuanxiao Dong card->ext_csd.enhanced_area_size = -EINVAL; 1754709de99dSChuanxiao Dong } else { 1755709de99dSChuanxiao Dong card->ext_csd.erase_group_def = 1; 1756709de99dSChuanxiao Dong /* 1757709de99dSChuanxiao Dong * enable ERASE_GRP_DEF successfully. 1758709de99dSChuanxiao Dong * This will affect the erase size, so 1759709de99dSChuanxiao Dong * here need to reset erase size 1760709de99dSChuanxiao Dong */ 1761709de99dSChuanxiao Dong mmc_set_erase_size(card); 1762709de99dSChuanxiao Dong } 1763709de99dSChuanxiao Dong } 1764709de99dSChuanxiao Dong 1765709de99dSChuanxiao Dong /* 176641e2a489SPhilip Rakity * Ensure eMMC user default partition is enabled 176741e2a489SPhilip Rakity */ 1768371a689fSAndrei Warkentin if (card->ext_csd.part_config & EXT_CSD_PART_CONFIG_ACC_MASK) { 1769371a689fSAndrei Warkentin card->ext_csd.part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK; 1770371a689fSAndrei Warkentin err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONFIG, 1771371a689fSAndrei Warkentin card->ext_csd.part_config, 1772371a689fSAndrei Warkentin card->ext_csd.part_time); 1773371a689fSAndrei Warkentin if (err && err != -EBADMSG) 1774371a689fSAndrei Warkentin goto free_card; 177541e2a489SPhilip Rakity } 177641e2a489SPhilip Rakity 177741e2a489SPhilip Rakity /* 177843235679SUlf Hansson * Enable power_off_notification byte in the ext_csd register 1779bec8726aSGirish K S */ 178043235679SUlf Hansson if (card->ext_csd.rev >= 6) { 1781bec8726aSGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1782bec8726aSGirish K S EXT_CSD_POWER_OFF_NOTIFICATION, 1783bec8726aSGirish K S EXT_CSD_POWER_ON, 1784bec8726aSGirish K S card->ext_csd.generic_cmd6_time); 1785bec8726aSGirish K S if (err && err != -EBADMSG) 1786bec8726aSGirish K S goto free_card; 1787bec8726aSGirish K S 178896a85d54SGirish K S /* 178996a85d54SGirish K S * The err can be -EBADMSG or 0, 179096a85d54SGirish K S * so check for success and update the flag 179196a85d54SGirish K S */ 1792bec8726aSGirish K S if (!err) 1793e6c08586SUlf Hansson card->ext_csd.power_off_notification = EXT_CSD_POWER_ON; 179496a85d54SGirish K S } 1795bec8726aSGirish K S 179601904ff7SAvri Altman /* set erase_arg */ 179701904ff7SAvri Altman if (mmc_can_discard(card)) 179801904ff7SAvri Altman card->erase_arg = MMC_DISCARD_ARG; 179901904ff7SAvri Altman else if (mmc_can_trim(card)) 180001904ff7SAvri Altman card->erase_arg = MMC_TRIM_ARG; 180101904ff7SAvri Altman else 180201904ff7SAvri Altman card->erase_arg = MMC_ERASE_ARG; 180301904ff7SAvri Altman 1804bec8726aSGirish K S /* 1805577fb131SSeungwon Jeon * Select timing interface 180689a73cf5SPierre Ossman */ 1807577fb131SSeungwon Jeon err = mmc_select_timing(card); 1808577fb131SSeungwon Jeon if (err) 180989a73cf5SPierre Ossman goto free_card; 181089a73cf5SPierre Ossman 1811a4924c71SGirish K S if (mmc_card_hs200(card)) { 181297a7d87eSWolfram Sang host->doing_init_tune = 1; 181397a7d87eSWolfram Sang 1814577fb131SSeungwon Jeon err = mmc_hs200_tuning(card); 1815878dbe42SWolfram Sang if (!err) 18160a5b6438SSeungwon Jeon err = mmc_select_hs400(card); 181797a7d87eSWolfram Sang 181897a7d87eSWolfram Sang host->doing_init_tune = 0; 1819878dbe42SWolfram Sang 1820878dbe42SWolfram Sang if (err) 1821878dbe42SWolfram Sang goto free_card; 1822878dbe42SWolfram Sang 1823773dc118SGuenter Roeck } else if (!mmc_card_hs400es(card)) { 1824577fb131SSeungwon Jeon /* Select the desired bus width optionally */ 1825577fb131SSeungwon Jeon err = mmc_select_bus_width(card); 18263d4ef329SAnssi Hannula if (err > 0 && mmc_card_hs(card)) { 1827577fb131SSeungwon Jeon err = mmc_select_hs_ddr(card); 1828577fb131SSeungwon Jeon if (err) 18294b75bffcSAndrew Gabbasov goto free_card; 183089a73cf5SPierre Ossman } 1831ef0b27d4SAdrian Hunter } 183289a73cf5SPierre Ossman 1833881d1c25SSeungwon Jeon /* 18342385049dSSeungwon Jeon * Choose the power class with selected bus interface 18352385049dSSeungwon Jeon */ 18362385049dSSeungwon Jeon mmc_select_powerclass(card); 18372385049dSSeungwon Jeon 18382385049dSSeungwon Jeon /* 183952d0974eSSubhash Jadavani * Enable HPI feature (if supported) 184052d0974eSSubhash Jadavani */ 184152d0974eSSubhash Jadavani if (card->ext_csd.hpi) { 184252d0974eSSubhash Jadavani err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 184352d0974eSSubhash Jadavani EXT_CSD_HPI_MGMT, 1, 184452d0974eSSubhash Jadavani card->ext_csd.generic_cmd6_time); 184552d0974eSSubhash Jadavani if (err && err != -EBADMSG) 184652d0974eSSubhash Jadavani goto free_card; 184752d0974eSSubhash Jadavani if (err) { 18486606110dSJoe Perches pr_warn("%s: Enabling HPI failed\n", 184952d0974eSSubhash Jadavani mmc_hostname(card->host)); 1850a0741ba4SUlf Hansson card->ext_csd.hpi_en = 0; 1851a0741ba4SUlf Hansson } else { 185252d0974eSSubhash Jadavani card->ext_csd.hpi_en = 1; 185352d0974eSSubhash Jadavani } 1854a0741ba4SUlf Hansson } 185552d0974eSSubhash Jadavani 185652d0974eSSubhash Jadavani /* 1857e3ae3401SUlf Hansson * If cache size is higher than 0, this indicates the existence of cache 1858e3ae3401SUlf Hansson * and it can be turned on. Note that some eMMCs from Micron has been 1859e3ae3401SUlf Hansson * reported to need ~800 ms timeout, while enabling the cache after 1860e3ae3401SUlf Hansson * sudden power failure tests. Let's extend the timeout to a minimum of 1861e3ae3401SUlf Hansson * DEFAULT_CACHE_EN_TIMEOUT_MS and do it for all cards. 1862881d1c25SSeungwon Jeon */ 1863ba9f39a7SUlf Hansson if (card->ext_csd.cache_size > 0) { 1864e3ae3401SUlf Hansson unsigned int timeout_ms = MIN_CACHE_EN_TIMEOUT_MS; 1865e3ae3401SUlf Hansson 1866e3ae3401SUlf Hansson timeout_ms = max(card->ext_csd.generic_cmd6_time, timeout_ms); 1867881d1c25SSeungwon Jeon err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1868e3ae3401SUlf Hansson EXT_CSD_CACHE_CTRL, 1, timeout_ms); 1869881d1c25SSeungwon Jeon if (err && err != -EBADMSG) 1870881d1c25SSeungwon Jeon goto free_card; 1871881d1c25SSeungwon Jeon 1872881d1c25SSeungwon Jeon /* 1873881d1c25SSeungwon Jeon * Only if no error, cache is turned on successfully. 1874881d1c25SSeungwon Jeon */ 18758bc0678bSSeungwon Jeon if (err) { 18766606110dSJoe Perches pr_warn("%s: Cache is supported, but failed to turn on (%d)\n", 18778bc0678bSSeungwon Jeon mmc_hostname(card->host), err); 18788bc0678bSSeungwon Jeon card->ext_csd.cache_ctrl = 0; 18798bc0678bSSeungwon Jeon } else { 18808bc0678bSSeungwon Jeon card->ext_csd.cache_ctrl = 1; 18818bc0678bSSeungwon Jeon } 1882881d1c25SSeungwon Jeon } 1883881d1c25SSeungwon Jeon 1884abd9ac14SSeungwon Jeon /* 188598d4f780SAdrian Hunter * Enable Command Queue if supported. Note that Packed Commands cannot 188698d4f780SAdrian Hunter * be used with Command Queue. 188798d4f780SAdrian Hunter */ 188898d4f780SAdrian Hunter card->ext_csd.cmdq_en = false; 188998d4f780SAdrian Hunter if (card->ext_csd.cmdq_support && host->caps2 & MMC_CAP2_CQE) { 189098d4f780SAdrian Hunter err = mmc_cmdq_enable(card); 189198d4f780SAdrian Hunter if (err && err != -EBADMSG) 189298d4f780SAdrian Hunter goto free_card; 189398d4f780SAdrian Hunter if (err) { 189498d4f780SAdrian Hunter pr_warn("%s: Enabling CMDQ failed\n", 189598d4f780SAdrian Hunter mmc_hostname(card->host)); 189698d4f780SAdrian Hunter card->ext_csd.cmdq_support = false; 189798d4f780SAdrian Hunter card->ext_csd.cmdq_depth = 0; 189898d4f780SAdrian Hunter } 189998d4f780SAdrian Hunter } 190098d4f780SAdrian Hunter /* 19019d4579a8SAdrian Hunter * In some cases (e.g. RPMB or mmc_test), the Command Queue must be 19029d4579a8SAdrian Hunter * disabled for a time, so a flag is needed to indicate to re-enable the 19039d4579a8SAdrian Hunter * Command Queue. 19049d4579a8SAdrian Hunter */ 19059d4579a8SAdrian Hunter card->reenable_cmdq = card->ext_csd.cmdq_en; 19069d4579a8SAdrian Hunter 1907511ce378SBaolin Wang if (host->cqe_ops && !host->cqe_enabled) { 1908f690f440SAdrian Hunter err = host->cqe_ops->cqe_enable(host, card); 1909511ce378SBaolin Wang if (!err) { 1910f690f440SAdrian Hunter host->cqe_enabled = true; 1911511ce378SBaolin Wang 1912511ce378SBaolin Wang if (card->ext_csd.cmdq_en) { 1913f690f440SAdrian Hunter pr_info("%s: Command Queue Engine enabled\n", 1914f690f440SAdrian Hunter mmc_hostname(host)); 1915511ce378SBaolin Wang } else { 1916511ce378SBaolin Wang host->hsq_enabled = true; 1917511ce378SBaolin Wang pr_info("%s: Host Software Queue enabled\n", 1918511ce378SBaolin Wang mmc_hostname(host)); 1919511ce378SBaolin Wang } 1920f690f440SAdrian Hunter } 1921f690f440SAdrian Hunter } 1922f690f440SAdrian Hunter 1923247cfe53SKyle Roeschley if (host->caps2 & MMC_CAP2_AVOID_3_3V && 1924247cfe53SKyle Roeschley host->ios.signal_voltage == MMC_SIGNAL_VOLTAGE_330) { 1925247cfe53SKyle Roeschley pr_err("%s: Host failed to negotiate down from 3.3V\n", 1926247cfe53SKyle Roeschley mmc_hostname(host)); 1927247cfe53SKyle Roeschley err = -EINVAL; 1928247cfe53SKyle Roeschley goto free_card; 1929247cfe53SKyle Roeschley } 1930247cfe53SKyle Roeschley 19316abaa0c9SPierre Ossman if (!oldcard) 19327ea239d9SPierre Ossman host->card = card; 19337ea239d9SPierre Ossman 193417b0429dSPierre Ossman return 0; 19356abaa0c9SPierre Ossman 19366abaa0c9SPierre Ossman free_card: 19376abaa0c9SPierre Ossman if (!oldcard) 19386abaa0c9SPierre Ossman mmc_remove_card(card); 19396abaa0c9SPierre Ossman err: 1940adf66a0dSPierre Ossman return err; 19416abaa0c9SPierre Ossman } 19426abaa0c9SPierre Ossman 194307a68216SUlf Hansson static int mmc_can_sleep(struct mmc_card *card) 194407a68216SUlf Hansson { 1945783667ccSYue Hu return card->ext_csd.rev >= 3; 194607a68216SUlf Hansson } 194707a68216SUlf Hansson 19486fa79651SUlf Hansson static int mmc_sleep_busy_cb(void *cb_data, bool *busy) 19496fa79651SUlf Hansson { 19506fa79651SUlf Hansson struct mmc_host *host = cb_data; 19516fa79651SUlf Hansson 19526fa79651SUlf Hansson *busy = host->ops->card_busy(host); 19536fa79651SUlf Hansson return 0; 19546fa79651SUlf Hansson } 19556fa79651SUlf Hansson 195607a68216SUlf Hansson static int mmc_sleep(struct mmc_host *host) 195707a68216SUlf Hansson { 1958c7836d15SMasahiro Yamada struct mmc_command cmd = {}; 195907a68216SUlf Hansson struct mmc_card *card = host->card; 1960cb962e04SUlf Hansson unsigned int timeout_ms = DIV_ROUND_UP(card->ext_csd.sa_timeout, 10000); 1961e62f1e0bSUlf Hansson bool use_r1b_resp; 196207a68216SUlf Hansson int err; 196307a68216SUlf Hansson 1964436f8daaSAdrian Hunter /* Re-tuning can't be done once the card is deselected */ 1965436f8daaSAdrian Hunter mmc_retune_hold(host); 1966436f8daaSAdrian Hunter 196707a68216SUlf Hansson err = mmc_deselect_cards(host); 196807a68216SUlf Hansson if (err) 1969436f8daaSAdrian Hunter goto out_release; 197007a68216SUlf Hansson 197107a68216SUlf Hansson cmd.opcode = MMC_SLEEP_AWAKE; 197207a68216SUlf Hansson cmd.arg = card->rca << 16; 197307a68216SUlf Hansson cmd.arg |= 1 << 15; 1974e62f1e0bSUlf Hansson use_r1b_resp = mmc_prepare_busy_cmd(host, &cmd, timeout_ms); 1975cb962e04SUlf Hansson 197607a68216SUlf Hansson err = mmc_wait_for_cmd(host, &cmd, 0); 197707a68216SUlf Hansson if (err) 1978436f8daaSAdrian Hunter goto out_release; 197907a68216SUlf Hansson 198007a68216SUlf Hansson /* 19816fa79651SUlf Hansson * If the host does not wait while the card signals busy, then we can 19826fa79651SUlf Hansson * try to poll, but only if the host supports HW polling, as the 19836fa79651SUlf Hansson * SEND_STATUS cmd is not allowed. If we can't poll, then we simply need 19846fa79651SUlf Hansson * to wait the sleep/awake timeout. 198507a68216SUlf Hansson */ 19866fa79651SUlf Hansson if (host->caps & MMC_CAP_WAIT_WHILE_BUSY && use_r1b_resp) 19876fa79651SUlf Hansson goto out_release; 19886fa79651SUlf Hansson 19896fa79651SUlf Hansson if (!host->ops->card_busy) { 1990cb962e04SUlf Hansson mmc_delay(timeout_ms); 19916fa79651SUlf Hansson goto out_release; 19926fa79651SUlf Hansson } 19936fa79651SUlf Hansson 19941760fdb6SUlf Hansson err = __mmc_poll_for_busy(host, 0, timeout_ms, &mmc_sleep_busy_cb, host); 199507a68216SUlf Hansson 1996436f8daaSAdrian Hunter out_release: 1997436f8daaSAdrian Hunter mmc_retune_release(host); 199807a68216SUlf Hansson return err; 199907a68216SUlf Hansson } 200007a68216SUlf Hansson 2001e6c08586SUlf Hansson static int mmc_can_poweroff_notify(const struct mmc_card *card) 2002e6c08586SUlf Hansson { 2003e6c08586SUlf Hansson return card && 2004e6c08586SUlf Hansson mmc_card_mmc(card) && 2005e6c08586SUlf Hansson (card->ext_csd.power_off_notification == EXT_CSD_POWER_ON); 2006e6c08586SUlf Hansson } 2007e6c08586SUlf Hansson 2008e6c08586SUlf Hansson static int mmc_poweroff_notify(struct mmc_card *card, unsigned int notify_type) 2009e6c08586SUlf Hansson { 2010e6c08586SUlf Hansson unsigned int timeout = card->ext_csd.generic_cmd6_time; 2011e6c08586SUlf Hansson int err; 2012e6c08586SUlf Hansson 2013e6c08586SUlf Hansson /* Use EXT_CSD_POWER_OFF_SHORT as default notification type. */ 2014e6c08586SUlf Hansson if (notify_type == EXT_CSD_POWER_OFF_LONG) 2015e6c08586SUlf Hansson timeout = card->ext_csd.power_off_longtime; 2016e6c08586SUlf Hansson 2017878e200bSUlf Hansson err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 2018e6c08586SUlf Hansson EXT_CSD_POWER_OFF_NOTIFICATION, 20195e52a168SBean Huo notify_type, timeout, 0, false, false, MMC_CMD_RETRIES); 2020e6c08586SUlf Hansson if (err) 2021e6c08586SUlf Hansson pr_err("%s: Power Off Notification timed out, %u\n", 2022e6c08586SUlf Hansson mmc_hostname(card->host), timeout); 2023e6c08586SUlf Hansson 2024e6c08586SUlf Hansson /* Disable the power off notification after the switch operation. */ 2025e6c08586SUlf Hansson card->ext_csd.power_off_notification = EXT_CSD_NO_POWER_NOTIFICATION; 2026e6c08586SUlf Hansson 2027e6c08586SUlf Hansson return err; 2028e6c08586SUlf Hansson } 2029e6c08586SUlf Hansson 20306abaa0c9SPierre Ossman /* 20316abaa0c9SPierre Ossman * Host is being removed. Free up the current card. 20326abaa0c9SPierre Ossman */ 20336abaa0c9SPierre Ossman static void mmc_remove(struct mmc_host *host) 20346abaa0c9SPierre Ossman { 20356abaa0c9SPierre Ossman mmc_remove_card(host->card); 20366abaa0c9SPierre Ossman host->card = NULL; 20376abaa0c9SPierre Ossman } 20386abaa0c9SPierre Ossman 20396abaa0c9SPierre Ossman /* 2040d3049504SAdrian Hunter * Card detection - card is alive. 2041d3049504SAdrian Hunter */ 2042d3049504SAdrian Hunter static int mmc_alive(struct mmc_host *host) 2043d3049504SAdrian Hunter { 2044d3049504SAdrian Hunter return mmc_send_status(host->card, NULL); 2045d3049504SAdrian Hunter } 2046d3049504SAdrian Hunter 2047d3049504SAdrian Hunter /* 20486abaa0c9SPierre Ossman * Card detection callback from host. 20496abaa0c9SPierre Ossman */ 20506abaa0c9SPierre Ossman static void mmc_detect(struct mmc_host *host) 20516abaa0c9SPierre Ossman { 20526abaa0c9SPierre Ossman int err; 20536abaa0c9SPierre Ossman 20546c0cedd1SAdrian Hunter mmc_get_card(host->card, NULL); 20556abaa0c9SPierre Ossman 20566abaa0c9SPierre Ossman /* 20576abaa0c9SPierre Ossman * Just check if our card has been removed. 20586abaa0c9SPierre Ossman */ 2059d3049504SAdrian Hunter err = _mmc_detect_card_removed(host); 20606abaa0c9SPierre Ossman 20616c0cedd1SAdrian Hunter mmc_put_card(host->card, NULL); 20627ea239d9SPierre Ossman 206317b0429dSPierre Ossman if (err) { 20644101c16aSPierre Ossman mmc_remove(host); 20656abaa0c9SPierre Ossman 20666abaa0c9SPierre Ossman mmc_claim_host(host); 20676abaa0c9SPierre Ossman mmc_detach_bus(host); 20687f7e4129SUlf Hansson mmc_power_off(host); 20696abaa0c9SPierre Ossman mmc_release_host(host); 20706abaa0c9SPierre Ossman } 20716abaa0c9SPierre Ossman } 20726abaa0c9SPierre Ossman 207397fce126SAvri Altman static bool _mmc_cache_enabled(struct mmc_host *host) 207497fce126SAvri Altman { 207597fce126SAvri Altman return host->card->ext_csd.cache_size > 0 && 207697fce126SAvri Altman host->card->ext_csd.cache_ctrl & 1; 207797fce126SAvri Altman } 207897fce126SAvri Altman 20798ae11edeSUlf Hansson /* 20808ae11edeSUlf Hansson * Flush the internal cache of the eMMC to non-volatile storage. 20818ae11edeSUlf Hansson */ 20828ae11edeSUlf Hansson static int _mmc_flush_cache(struct mmc_host *host) 20838ae11edeSUlf Hansson { 20848ae11edeSUlf Hansson int err = 0; 20858ae11edeSUlf Hansson 2086bb94f1adSBean Huo if (mmc_card_broken_cache_flush(host->card) && !host->card->written_flag) 2087bb94f1adSBean Huo return 0; 2088bb94f1adSBean Huo 20898ae11edeSUlf Hansson if (_mmc_cache_enabled(host)) { 20908ae11edeSUlf Hansson err = mmc_switch(host->card, EXT_CSD_CMD_SET_NORMAL, 20918ae11edeSUlf Hansson EXT_CSD_FLUSH_CACHE, 1, 20928ae11edeSUlf Hansson CACHE_FLUSH_TIMEOUT_MS); 20938ae11edeSUlf Hansson if (err) 2094bb94f1adSBean Huo pr_err("%s: cache flush error %d\n", mmc_hostname(host), err); 2095bb94f1adSBean Huo else 2096bb94f1adSBean Huo host->card->written_flag = false; 20978ae11edeSUlf Hansson } 20988ae11edeSUlf Hansson 20998ae11edeSUlf Hansson return err; 21008ae11edeSUlf Hansson } 21018ae11edeSUlf Hansson 210203d071fcSUlf Hansson static int _mmc_suspend(struct mmc_host *host, bool is_suspend) 21036abaa0c9SPierre Ossman { 2104c3805467SBalaji T K int err = 0; 210503d071fcSUlf Hansson unsigned int notify_type = is_suspend ? EXT_CSD_POWER_OFF_SHORT : 210603d071fcSUlf Hansson EXT_CSD_POWER_OFF_LONG; 2107c3805467SBalaji T K 21086abaa0c9SPierre Ossman mmc_claim_host(host); 2109881d926dSMaya Erez 21109ec775f7SUlf Hansson if (mmc_card_suspended(host->card)) 21119ec775f7SUlf Hansson goto out; 21129ec775f7SUlf Hansson 21138ae11edeSUlf Hansson err = _mmc_flush_cache(host); 2114881d926dSMaya Erez if (err) 2115881d926dSMaya Erez goto out; 2116881d926dSMaya Erez 211743235679SUlf Hansson if (mmc_can_poweroff_notify(host->card) && 2118ec02760bSYoshihiro Shimoda ((host->caps2 & MMC_CAP2_FULL_PWR_CYCLE) || !is_suspend || 2119ec02760bSYoshihiro Shimoda (host->caps2 & MMC_CAP2_FULL_PWR_CYCLE_IN_SUSPEND))) 212003d071fcSUlf Hansson err = mmc_poweroff_notify(host->card, notify_type); 212107a68216SUlf Hansson else if (mmc_can_sleep(host->card)) 212207a68216SUlf Hansson err = mmc_sleep(host); 2123e6c08586SUlf Hansson else if (!mmc_host_is_spi(host)) 212485e727edSJaehoon Chung err = mmc_deselect_cards(host); 212595cdfb72SNicolas Pitre 21269ec775f7SUlf Hansson if (!err) { 212774590263SUlf Hansson mmc_power_off(host); 21289ec775f7SUlf Hansson mmc_card_set_suspended(host->card); 21299ec775f7SUlf Hansson } 2130881d926dSMaya Erez out: 2131881d926dSMaya Erez mmc_release_host(host); 2132c3805467SBalaji T K return err; 21336abaa0c9SPierre Ossman } 21346abaa0c9SPierre Ossman 21356abaa0c9SPierre Ossman /* 21360cb403a2SUlf Hansson * Suspend callback 213703d071fcSUlf Hansson */ 213803d071fcSUlf Hansson static int mmc_suspend(struct mmc_host *host) 213903d071fcSUlf Hansson { 21400cb403a2SUlf Hansson int err; 21410cb403a2SUlf Hansson 21420cb403a2SUlf Hansson err = _mmc_suspend(host, true); 21430cb403a2SUlf Hansson if (!err) { 21440cb403a2SUlf Hansson pm_runtime_disable(&host->card->dev); 21450cb403a2SUlf Hansson pm_runtime_set_suspended(&host->card->dev); 21460cb403a2SUlf Hansson } 21470cb403a2SUlf Hansson 21480cb403a2SUlf Hansson return err; 214903d071fcSUlf Hansson } 215003d071fcSUlf Hansson 215103d071fcSUlf Hansson /* 21526abaa0c9SPierre Ossman * This function tries to determine if the same card is still present 21536abaa0c9SPierre Ossman * and, if so, restore all state to it. 21546abaa0c9SPierre Ossman */ 21550cb403a2SUlf Hansson static int _mmc_resume(struct mmc_host *host) 21566abaa0c9SPierre Ossman { 21579ec775f7SUlf Hansson int err = 0; 21586abaa0c9SPierre Ossman 21596abaa0c9SPierre Ossman mmc_claim_host(host); 21609ec775f7SUlf Hansson 21619ec775f7SUlf Hansson if (!mmc_card_suspended(host->card)) 21629ec775f7SUlf Hansson goto out; 21639ec775f7SUlf Hansson 216469041150SUlf Hansson mmc_power_up(host, host->card->ocr); 216569041150SUlf Hansson err = mmc_init_card(host, host->card->ocr, host->card); 21669ec775f7SUlf Hansson mmc_card_clr_suspended(host->card); 21672986d0bfSPierre Ossman 21689ec775f7SUlf Hansson out: 21699ec775f7SUlf Hansson mmc_release_host(host); 217095cdfb72SNicolas Pitre return err; 21716abaa0c9SPierre Ossman } 21726abaa0c9SPierre Ossman 21739ec775f7SUlf Hansson /* 21749ec775f7SUlf Hansson * Shutdown callback 21759ec775f7SUlf Hansson */ 21769ec775f7SUlf Hansson static int mmc_shutdown(struct mmc_host *host) 21779ec775f7SUlf Hansson { 21789ec775f7SUlf Hansson int err = 0; 21799ec775f7SUlf Hansson 21809ec775f7SUlf Hansson /* 21819ec775f7SUlf Hansson * In a specific case for poweroff notify, we need to resume the card 21829ec775f7SUlf Hansson * before we can shutdown it properly. 21839ec775f7SUlf Hansson */ 21849ec775f7SUlf Hansson if (mmc_can_poweroff_notify(host->card) && 21859ec775f7SUlf Hansson !(host->caps2 & MMC_CAP2_FULL_PWR_CYCLE)) 21860cb403a2SUlf Hansson err = _mmc_resume(host); 21879ec775f7SUlf Hansson 21889ec775f7SUlf Hansson if (!err) 21899ec775f7SUlf Hansson err = _mmc_suspend(host, false); 21909ec775f7SUlf Hansson 21919ec775f7SUlf Hansson return err; 21929ec775f7SUlf Hansson } 2193c4d770d7SUlf Hansson 2194c4d770d7SUlf Hansson /* 21950cb403a2SUlf Hansson * Callback for resume. 21960cb403a2SUlf Hansson */ 21970cb403a2SUlf Hansson static int mmc_resume(struct mmc_host *host) 21980cb403a2SUlf Hansson { 21990cb403a2SUlf Hansson pm_runtime_enable(&host->card->dev); 2200c29536e8SUlf Hansson return 0; 22010cb403a2SUlf Hansson } 22020cb403a2SUlf Hansson 22030cb403a2SUlf Hansson /* 2204c4d770d7SUlf Hansson * Callback for runtime_suspend. 2205c4d770d7SUlf Hansson */ 2206c4d770d7SUlf Hansson static int mmc_runtime_suspend(struct mmc_host *host) 2207c4d770d7SUlf Hansson { 2208c4d770d7SUlf Hansson int err; 2209c4d770d7SUlf Hansson 2210c4d770d7SUlf Hansson if (!(host->caps & MMC_CAP_AGGRESSIVE_PM)) 2211c4d770d7SUlf Hansson return 0; 2212c4d770d7SUlf Hansson 22130cb403a2SUlf Hansson err = _mmc_suspend(host, true); 22140cc81a8cSUlf Hansson if (err) 2215f42cf8d6SMasanari Iida pr_err("%s: error %d doing aggressive suspend\n", 2216c4d770d7SUlf Hansson mmc_hostname(host), err); 2217c4d770d7SUlf Hansson 2218c4d770d7SUlf Hansson return err; 2219c4d770d7SUlf Hansson } 2220c4d770d7SUlf Hansson 2221c4d770d7SUlf Hansson /* 2222c4d770d7SUlf Hansson * Callback for runtime_resume. 2223c4d770d7SUlf Hansson */ 2224c4d770d7SUlf Hansson static int mmc_runtime_resume(struct mmc_host *host) 2225c4d770d7SUlf Hansson { 2226c4d770d7SUlf Hansson int err; 2227c4d770d7SUlf Hansson 22280cb403a2SUlf Hansson err = _mmc_resume(host); 2229520322d9SAdrian Hunter if (err && err != -ENOMEDIUM) 2230c29536e8SUlf Hansson pr_err("%s: error %d doing runtime resume\n", 2231c4d770d7SUlf Hansson mmc_hostname(host), err); 2232c4d770d7SUlf Hansson 2233c4d770d7SUlf Hansson return 0; 2234c4d770d7SUlf Hansson } 2235c4d770d7SUlf Hansson 223688bed3a6SUlf Hansson static int mmc_can_reset(struct mmc_card *card) 2237f855a371SJohan Rudholm { 2238f855a371SJohan Rudholm u8 rst_n_function; 2239f855a371SJohan Rudholm 2240f855a371SJohan Rudholm rst_n_function = card->ext_csd.rst_n_function; 2241f855a371SJohan Rudholm if ((rst_n_function & EXT_CSD_RST_N_EN_MASK) != EXT_CSD_RST_N_ENABLED) 2242f855a371SJohan Rudholm return 0; 2243f855a371SJohan Rudholm return 1; 2244f855a371SJohan Rudholm } 2245f855a371SJohan Rudholm 22463a3db603SUlf Hansson static int _mmc_hw_reset(struct mmc_host *host) 2247f855a371SJohan Rudholm { 2248f855a371SJohan Rudholm struct mmc_card *card = host->card; 2249f855a371SJohan Rudholm 2250437db4c6SAdrian Hunter /* 2251437db4c6SAdrian Hunter * In the case of recovery, we can't expect flushing the cache to work 2252437db4c6SAdrian Hunter * always, but we have a go and ignore errors. 2253437db4c6SAdrian Hunter */ 22548ae11edeSUlf Hansson _mmc_flush_cache(host); 2255437db4c6SAdrian Hunter 225632f18e59SWolfram Sang if ((host->caps & MMC_CAP_HW_RESET) && host->ops->card_hw_reset && 22574e6c7178SGwendal Grignou mmc_can_reset(card)) { 22584e6c7178SGwendal Grignou /* If the card accept RST_n signal, send it. */ 2259f855a371SJohan Rudholm mmc_set_clock(host, host->f_init); 226032f18e59SWolfram Sang host->ops->card_hw_reset(host); 2261f855a371SJohan Rudholm /* Set initial state and call mmc_set_ios */ 2262f855a371SJohan Rudholm mmc_set_initial_state(host); 22634e6c7178SGwendal Grignou } else { 22644e6c7178SGwendal Grignou /* Do a brute force power cycle */ 22654e6c7178SGwendal Grignou mmc_power_cycle(host, card->ocr); 226652c8212dSUlf Hansson mmc_pwrseq_reset(host); 22674e6c7178SGwendal Grignou } 2268364549ddSUlf Hansson return mmc_init_card(host, card->ocr, card); 2269f855a371SJohan Rudholm } 2270f855a371SJohan Rudholm 22719feae246SAdrian Hunter static const struct mmc_bus_ops mmc_ops = { 22729feae246SAdrian Hunter .remove = mmc_remove, 22739feae246SAdrian Hunter .detect = mmc_detect, 22749feae246SAdrian Hunter .suspend = mmc_suspend, 22759feae246SAdrian Hunter .resume = mmc_resume, 2276c4d770d7SUlf Hansson .runtime_suspend = mmc_runtime_suspend, 2277c4d770d7SUlf Hansson .runtime_resume = mmc_runtime_resume, 2278d3049504SAdrian Hunter .alive = mmc_alive, 2279486fdbbcSUlf Hansson .shutdown = mmc_shutdown, 22803a3db603SUlf Hansson .hw_reset = _mmc_hw_reset, 228197fce126SAvri Altman .cache_enabled = _mmc_cache_enabled, 22828ae11edeSUlf Hansson .flush_cache = _mmc_flush_cache, 22839feae246SAdrian Hunter }; 22849feae246SAdrian Hunter 22856abaa0c9SPierre Ossman /* 22866abaa0c9SPierre Ossman * Starting point for MMC card init. 22876abaa0c9SPierre Ossman */ 2288807e8e40SAndy Ross int mmc_attach_mmc(struct mmc_host *host) 22896abaa0c9SPierre Ossman { 22906abaa0c9SPierre Ossman int err; 229169041150SUlf Hansson u32 ocr, rocr; 22926abaa0c9SPierre Ossman 2293d84075c8SPierre Ossman WARN_ON(!host->claimed); 22946abaa0c9SPierre Ossman 229544669034SStefan Nilsson XK /* Set correct bus mode for MMC before attempting attach */ 229644669034SStefan Nilsson XK if (!mmc_host_is_spi(host)) 229744669034SStefan Nilsson XK mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); 229844669034SStefan Nilsson XK 2299807e8e40SAndy Ross err = mmc_send_op_cond(host, 0, &ocr); 2300807e8e40SAndy Ross if (err) 2301807e8e40SAndy Ross return err; 2302807e8e40SAndy Ross 23032501c917SUlf Hansson mmc_attach_bus(host, &mmc_ops); 23048f230f45STakashi Iwai if (host->ocr_avail_mmc) 23058f230f45STakashi Iwai host->ocr_avail = host->ocr_avail_mmc; 23066abaa0c9SPierre Ossman 23076abaa0c9SPierre Ossman /* 2308af517150SDavid Brownell * We need to get OCR a different way for SPI. 2309af517150SDavid Brownell */ 2310af517150SDavid Brownell if (mmc_host_is_spi(host)) { 2311af517150SDavid Brownell err = mmc_spi_read_ocr(host, 1, &ocr); 2312af517150SDavid Brownell if (err) 2313af517150SDavid Brownell goto err; 2314af517150SDavid Brownell } 2315af517150SDavid Brownell 231669041150SUlf Hansson rocr = mmc_select_voltage(host, ocr); 23176abaa0c9SPierre Ossman 23186abaa0c9SPierre Ossman /* 23196abaa0c9SPierre Ossman * Can we support the voltage of the card? 23206abaa0c9SPierre Ossman */ 232169041150SUlf Hansson if (!rocr) { 2322109b5bedSPierre Ossman err = -EINVAL; 23236abaa0c9SPierre Ossman goto err; 2324109b5bedSPierre Ossman } 23256abaa0c9SPierre Ossman 23266abaa0c9SPierre Ossman /* 23276abaa0c9SPierre Ossman * Detect and init the card. 23286abaa0c9SPierre Ossman */ 232969041150SUlf Hansson err = mmc_init_card(host, rocr, NULL); 233017b0429dSPierre Ossman if (err) 23316abaa0c9SPierre Ossman goto err; 23326abaa0c9SPierre Ossman 23336abaa0c9SPierre Ossman mmc_release_host(host); 23344101c16aSPierre Ossman err = mmc_add_card(host->card); 23357ea239d9SPierre Ossman if (err) 23362986d0bfSPierre Ossman goto remove_card; 23377ea239d9SPierre Ossman 23382860d060SSergei Shtylyov mmc_claim_host(host); 23397ea239d9SPierre Ossman return 0; 23407ea239d9SPierre Ossman 23412986d0bfSPierre Ossman remove_card: 23426abaa0c9SPierre Ossman mmc_remove_card(host->card); 23432986d0bfSPierre Ossman mmc_claim_host(host); 2344807e8e40SAndy Ross host->card = NULL; 23457ea239d9SPierre Ossman err: 23467ea239d9SPierre Ossman mmc_detach_bus(host); 23477ea239d9SPierre Ossman 2348a3c76eb9SGirish K S pr_err("%s: error %d whilst initialising MMC card\n", 2349109b5bedSPierre Ossman mmc_hostname(host), err); 2350109b5bedSPierre Ossman 2351adf66a0dSPierre Ossman return err; 23527ea239d9SPierre Ossman } 2353