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> 157ea239d9SPierre Ossman 167ea239d9SPierre Ossman #include <linux/mmc/host.h> 177ea239d9SPierre Ossman #include <linux/mmc/card.h> 187ea239d9SPierre Ossman #include <linux/mmc/mmc.h> 197ea239d9SPierre Ossman 207ea239d9SPierre Ossman #include "core.h" 214facdde1SUlf Hansson #include "card.h" 22436f8daaSAdrian Hunter #include "host.h" 234101c16aSPierre Ossman #include "bus.h" 247ea239d9SPierre Ossman #include "mmc_ops.h" 2528fc64afSShawn Lin #include "quirks.h" 264c4cb171SPhilip Rakity #include "sd_ops.h" 2752c8212dSUlf Hansson #include "pwrseq.h" 287ea239d9SPierre Ossman 29fe1b5700SUlf Hansson #define DEFAULT_CMD6_TIMEOUT_MS 500 30e3ae3401SUlf Hansson #define MIN_CACHE_EN_TIMEOUT_MS 1600 31fe1b5700SUlf Hansson 327ea239d9SPierre Ossman static const unsigned int tran_exp[] = { 337ea239d9SPierre Ossman 10000, 100000, 1000000, 10000000, 347ea239d9SPierre Ossman 0, 0, 0, 0 357ea239d9SPierre Ossman }; 367ea239d9SPierre Ossman 377ea239d9SPierre Ossman static const unsigned char tran_mant[] = { 387ea239d9SPierre Ossman 0, 10, 12, 13, 15, 20, 25, 30, 397ea239d9SPierre Ossman 35, 40, 45, 50, 55, 60, 70, 80, 407ea239d9SPierre Ossman }; 417ea239d9SPierre Ossman 424406ae21SShawn Lin static const unsigned int taac_exp[] = { 437ea239d9SPierre Ossman 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, 447ea239d9SPierre Ossman }; 457ea239d9SPierre Ossman 464406ae21SShawn Lin static const unsigned int taac_mant[] = { 477ea239d9SPierre Ossman 0, 10, 12, 13, 15, 20, 25, 30, 487ea239d9SPierre Ossman 35, 40, 45, 50, 55, 60, 70, 80, 497ea239d9SPierre Ossman }; 507ea239d9SPierre Ossman 517ea239d9SPierre Ossman #define UNSTUFF_BITS(resp,start,size) \ 527ea239d9SPierre Ossman ({ \ 537ea239d9SPierre Ossman const int __size = size; \ 547ea239d9SPierre Ossman const u32 __mask = (__size < 32 ? 1 << __size : 0) - 1; \ 557ea239d9SPierre Ossman const int __off = 3 - ((start) / 32); \ 567ea239d9SPierre Ossman const int __shft = (start) & 31; \ 577ea239d9SPierre Ossman u32 __res; \ 587ea239d9SPierre Ossman \ 597ea239d9SPierre Ossman __res = resp[__off] >> __shft; \ 607ea239d9SPierre Ossman if (__size + __shft > 32) \ 617ea239d9SPierre Ossman __res |= resp[__off-1] << ((32 - __shft) % 32); \ 627ea239d9SPierre Ossman __res & __mask; \ 637ea239d9SPierre Ossman }) 647ea239d9SPierre Ossman 657ea239d9SPierre Ossman /* 667ea239d9SPierre Ossman * Given the decoded CSD structure, decode the raw CID to our CID structure. 677ea239d9SPierre Ossman */ 68bd766312SPierre Ossman static int mmc_decode_cid(struct mmc_card *card) 697ea239d9SPierre Ossman { 707ea239d9SPierre Ossman u32 *resp = card->raw_cid; 717ea239d9SPierre Ossman 727ea239d9SPierre Ossman /* 737ea239d9SPierre Ossman * The selection of the format here is based upon published 747ea239d9SPierre Ossman * specs from sandisk and from what people have reported. 757ea239d9SPierre Ossman */ 767ea239d9SPierre Ossman switch (card->csd.mmca_vsn) { 777ea239d9SPierre Ossman case 0: /* MMC v1.0 - v1.2 */ 787ea239d9SPierre Ossman case 1: /* MMC v1.4 */ 797ea239d9SPierre Ossman card->cid.manfid = UNSTUFF_BITS(resp, 104, 24); 807ea239d9SPierre Ossman card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); 817ea239d9SPierre Ossman card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); 827ea239d9SPierre Ossman card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); 837ea239d9SPierre Ossman card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); 847ea239d9SPierre Ossman card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); 857ea239d9SPierre Ossman card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); 867ea239d9SPierre Ossman card->cid.prod_name[6] = UNSTUFF_BITS(resp, 48, 8); 877ea239d9SPierre Ossman card->cid.hwrev = UNSTUFF_BITS(resp, 44, 4); 887ea239d9SPierre Ossman card->cid.fwrev = UNSTUFF_BITS(resp, 40, 4); 897ea239d9SPierre Ossman card->cid.serial = UNSTUFF_BITS(resp, 16, 24); 907ea239d9SPierre Ossman card->cid.month = UNSTUFF_BITS(resp, 12, 4); 917ea239d9SPierre Ossman card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; 927ea239d9SPierre Ossman break; 937ea239d9SPierre Ossman 947ea239d9SPierre Ossman case 2: /* MMC v2.0 - v2.2 */ 957ea239d9SPierre Ossman case 3: /* MMC v3.1 - v3.3 */ 967ea239d9SPierre Ossman case 4: /* MMC v4 */ 977ea239d9SPierre Ossman card->cid.manfid = UNSTUFF_BITS(resp, 120, 8); 987ea239d9SPierre Ossman card->cid.oemid = UNSTUFF_BITS(resp, 104, 16); 997ea239d9SPierre Ossman card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); 1007ea239d9SPierre Ossman card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); 1017ea239d9SPierre Ossman card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); 1027ea239d9SPierre Ossman card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); 1037ea239d9SPierre Ossman card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); 1047ea239d9SPierre Ossman card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); 10551e7e8b6SBernie Thompson card->cid.prv = UNSTUFF_BITS(resp, 48, 8); 1067ea239d9SPierre Ossman card->cid.serial = UNSTUFF_BITS(resp, 16, 32); 1077ea239d9SPierre Ossman card->cid.month = UNSTUFF_BITS(resp, 12, 4); 1087ea239d9SPierre Ossman card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; 1097ea239d9SPierre Ossman break; 1107ea239d9SPierre Ossman 1117ea239d9SPierre Ossman default: 112a3c76eb9SGirish K S pr_err("%s: card has unknown MMCA version %d\n", 1137ea239d9SPierre Ossman mmc_hostname(card->host), card->csd.mmca_vsn); 114bd766312SPierre Ossman return -EINVAL; 1157ea239d9SPierre Ossman } 116bd766312SPierre Ossman 117bd766312SPierre Ossman return 0; 1187ea239d9SPierre Ossman } 1197ea239d9SPierre Ossman 120dfe86cbaSAdrian Hunter static void mmc_set_erase_size(struct mmc_card *card) 121dfe86cbaSAdrian Hunter { 122dfe86cbaSAdrian Hunter if (card->ext_csd.erase_group_def & 1) 123dfe86cbaSAdrian Hunter card->erase_size = card->ext_csd.hc_erase_size; 124dfe86cbaSAdrian Hunter else 125dfe86cbaSAdrian Hunter card->erase_size = card->csd.erase_size; 126dfe86cbaSAdrian Hunter 127dfe86cbaSAdrian Hunter mmc_init_erase(card); 128dfe86cbaSAdrian Hunter } 129dfe86cbaSAdrian Hunter 1307ea239d9SPierre Ossman /* 1317ea239d9SPierre Ossman * Given a 128-bit response, decode to our card CSD structure. 1327ea239d9SPierre Ossman */ 133bd766312SPierre Ossman static int mmc_decode_csd(struct mmc_card *card) 1347ea239d9SPierre Ossman { 1357ea239d9SPierre Ossman struct mmc_csd *csd = &card->csd; 136dfe86cbaSAdrian Hunter unsigned int e, m, a, b; 1377ea239d9SPierre Ossman u32 *resp = card->raw_csd; 1387ea239d9SPierre Ossman 1397ea239d9SPierre Ossman /* 1407ea239d9SPierre Ossman * We only understand CSD structure v1.1 and v1.2. 1417ea239d9SPierre Ossman * v1.2 has extra information in bits 15, 11 and 10. 1426da24b78SKyungmin Park * We also support eMMC v4.4 & v4.41. 1437ea239d9SPierre Ossman */ 1446da24b78SKyungmin Park csd->structure = UNSTUFF_BITS(resp, 126, 2); 1456da24b78SKyungmin Park if (csd->structure == 0) { 146a3c76eb9SGirish K S pr_err("%s: unrecognised CSD structure version %d\n", 1476da24b78SKyungmin Park mmc_hostname(card->host), csd->structure); 148bd766312SPierre Ossman return -EINVAL; 1497ea239d9SPierre Ossman } 1507ea239d9SPierre Ossman 1517ea239d9SPierre Ossman csd->mmca_vsn = UNSTUFF_BITS(resp, 122, 4); 1527ea239d9SPierre Ossman m = UNSTUFF_BITS(resp, 115, 4); 1537ea239d9SPierre Ossman e = UNSTUFF_BITS(resp, 112, 3); 1544406ae21SShawn Lin csd->taac_ns = (taac_exp[e] * taac_mant[m] + 9) / 10; 1554406ae21SShawn Lin csd->taac_clks = UNSTUFF_BITS(resp, 104, 8) * 100; 1567ea239d9SPierre Ossman 1577ea239d9SPierre Ossman m = UNSTUFF_BITS(resp, 99, 4); 1587ea239d9SPierre Ossman e = UNSTUFF_BITS(resp, 96, 3); 1597ea239d9SPierre Ossman csd->max_dtr = tran_exp[e] * tran_mant[m]; 1607ea239d9SPierre Ossman csd->cmdclass = UNSTUFF_BITS(resp, 84, 12); 1617ea239d9SPierre Ossman 1627ea239d9SPierre Ossman e = UNSTUFF_BITS(resp, 47, 3); 1637ea239d9SPierre Ossman m = UNSTUFF_BITS(resp, 62, 12); 1647ea239d9SPierre Ossman csd->capacity = (1 + m) << (e + 2); 1657ea239d9SPierre Ossman 1667ea239d9SPierre Ossman csd->read_blkbits = UNSTUFF_BITS(resp, 80, 4); 1677ea239d9SPierre Ossman csd->read_partial = UNSTUFF_BITS(resp, 79, 1); 1687ea239d9SPierre Ossman csd->write_misalign = UNSTUFF_BITS(resp, 78, 1); 1697ea239d9SPierre Ossman csd->read_misalign = UNSTUFF_BITS(resp, 77, 1); 1703d705d14SSascha Hauer csd->dsr_imp = UNSTUFF_BITS(resp, 76, 1); 1717ea239d9SPierre Ossman csd->r2w_factor = UNSTUFF_BITS(resp, 26, 3); 1727ea239d9SPierre Ossman csd->write_blkbits = UNSTUFF_BITS(resp, 22, 4); 1737ea239d9SPierre Ossman csd->write_partial = UNSTUFF_BITS(resp, 21, 1); 174bd766312SPierre Ossman 175dfe86cbaSAdrian Hunter if (csd->write_blkbits >= 9) { 176dfe86cbaSAdrian Hunter a = UNSTUFF_BITS(resp, 42, 5); 177dfe86cbaSAdrian Hunter b = UNSTUFF_BITS(resp, 37, 5); 178dfe86cbaSAdrian Hunter csd->erase_size = (a + 1) * (b + 1); 179dfe86cbaSAdrian Hunter csd->erase_size <<= csd->write_blkbits - 9; 180dfe86cbaSAdrian Hunter } 181dfe86cbaSAdrian Hunter 182bd766312SPierre Ossman return 0; 1837ea239d9SPierre Ossman } 1847ea239d9SPierre Ossman 18596cf5f02SSeungwon Jeon static void mmc_select_card_type(struct mmc_card *card) 18696cf5f02SSeungwon Jeon { 18796cf5f02SSeungwon Jeon struct mmc_host *host = card->host; 1880a5b6438SSeungwon Jeon u8 card_type = card->ext_csd.raw_card_type; 1895f1a4dd0SLee Jones u32 caps = host->caps, caps2 = host->caps2; 190577fb131SSeungwon Jeon unsigned int hs_max_dtr = 0, hs200_max_dtr = 0; 1912415c0efSSeungwon Jeon unsigned int avail_type = 0; 19296cf5f02SSeungwon Jeon 19396cf5f02SSeungwon Jeon if (caps & MMC_CAP_MMC_HIGHSPEED && 1942415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS_26) { 1952415c0efSSeungwon Jeon hs_max_dtr = MMC_HIGH_26_MAX_DTR; 1962415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS_26; 1972415c0efSSeungwon Jeon } 1982415c0efSSeungwon Jeon 1992415c0efSSeungwon Jeon if (caps & MMC_CAP_MMC_HIGHSPEED && 2002415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS_52) { 20196cf5f02SSeungwon Jeon hs_max_dtr = MMC_HIGH_52_MAX_DTR; 2022415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS_52; 2032415c0efSSeungwon Jeon } 20496cf5f02SSeungwon Jeon 20520f921bbSUlf Hansson if (caps & (MMC_CAP_1_8V_DDR | MMC_CAP_3_3V_DDR) && 2062415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_DDR_1_8V) { 20796cf5f02SSeungwon Jeon hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; 2082415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_DDR_1_8V; 2092415c0efSSeungwon Jeon } 21096cf5f02SSeungwon Jeon 2112415c0efSSeungwon Jeon if (caps & MMC_CAP_1_2V_DDR && 2122415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_DDR_1_2V) { 2132415c0efSSeungwon Jeon hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; 2142415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_DDR_1_2V; 2152415c0efSSeungwon Jeon } 2162415c0efSSeungwon Jeon 2172415c0efSSeungwon Jeon if (caps2 & MMC_CAP2_HS200_1_8V_SDR && 2182415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS200_1_8V) { 219577fb131SSeungwon Jeon hs200_max_dtr = MMC_HS200_MAX_DTR; 2202415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS200_1_8V; 2212415c0efSSeungwon Jeon } 2222415c0efSSeungwon Jeon 2232415c0efSSeungwon Jeon if (caps2 & MMC_CAP2_HS200_1_2V_SDR && 2242415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS200_1_2V) { 225577fb131SSeungwon Jeon hs200_max_dtr = MMC_HS200_MAX_DTR; 2262415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS200_1_2V; 2272415c0efSSeungwon Jeon } 22896cf5f02SSeungwon Jeon 2290a5b6438SSeungwon Jeon if (caps2 & MMC_CAP2_HS400_1_8V && 2300a5b6438SSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS400_1_8V) { 2310a5b6438SSeungwon Jeon hs200_max_dtr = MMC_HS200_MAX_DTR; 2320a5b6438SSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS400_1_8V; 2330a5b6438SSeungwon Jeon } 2340a5b6438SSeungwon Jeon 2350a5b6438SSeungwon Jeon if (caps2 & MMC_CAP2_HS400_1_2V && 2360a5b6438SSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS400_1_2V) { 2370a5b6438SSeungwon Jeon hs200_max_dtr = MMC_HS200_MAX_DTR; 2380a5b6438SSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS400_1_2V; 2390a5b6438SSeungwon Jeon } 2400a5b6438SSeungwon Jeon 24181ac2af6SShawn Lin if ((caps2 & MMC_CAP2_HS400_ES) && 24281ac2af6SShawn Lin card->ext_csd.strobe_support && 24381ac2af6SShawn Lin (avail_type & EXT_CSD_CARD_TYPE_HS400)) 24481ac2af6SShawn Lin avail_type |= EXT_CSD_CARD_TYPE_HS400ES; 24581ac2af6SShawn Lin 24696cf5f02SSeungwon Jeon card->ext_csd.hs_max_dtr = hs_max_dtr; 247577fb131SSeungwon Jeon card->ext_csd.hs200_max_dtr = hs200_max_dtr; 2482415c0efSSeungwon Jeon card->mmc_avail_type = avail_type; 24996cf5f02SSeungwon Jeon } 25096cf5f02SSeungwon Jeon 251b4493eeaSGrégory Soutadé static void mmc_manage_enhanced_area(struct mmc_card *card, u8 *ext_csd) 252b4493eeaSGrégory Soutadé { 253994324bbSGrégory Soutadé u8 hc_erase_grp_sz, hc_wp_grp_sz; 254994324bbSGrégory Soutadé 255994324bbSGrégory Soutadé /* 256994324bbSGrégory Soutadé * Disable these attributes by default 257994324bbSGrégory Soutadé */ 258994324bbSGrégory Soutadé card->ext_csd.enhanced_area_offset = -EINVAL; 259994324bbSGrégory Soutadé card->ext_csd.enhanced_area_size = -EINVAL; 260b4493eeaSGrégory Soutadé 261b4493eeaSGrégory Soutadé /* 262b4493eeaSGrégory Soutadé * Enhanced area feature support -- check whether the eMMC 263b4493eeaSGrégory Soutadé * card has the Enhanced area enabled. If so, export enhanced 264b4493eeaSGrégory Soutadé * area offset and size to user by adding sysfs interface. 265b4493eeaSGrégory Soutadé */ 266b4493eeaSGrégory Soutadé if ((ext_csd[EXT_CSD_PARTITION_SUPPORT] & 0x2) && 267b4493eeaSGrégory Soutadé (ext_csd[EXT_CSD_PARTITION_ATTRIBUTE] & 0x1)) { 268994324bbSGrégory Soutadé if (card->ext_csd.partition_setting_completed) { 269b4493eeaSGrégory Soutadé hc_erase_grp_sz = 270b4493eeaSGrégory Soutadé ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 271b4493eeaSGrégory Soutadé hc_wp_grp_sz = 272b4493eeaSGrégory Soutadé ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 273b4493eeaSGrégory Soutadé 274b4493eeaSGrégory Soutadé /* 275b4493eeaSGrégory Soutadé * calculate the enhanced data area offset, in bytes 276b4493eeaSGrégory Soutadé */ 277b4493eeaSGrégory Soutadé card->ext_csd.enhanced_area_offset = 278ded8a5f9SKuninori Morimoto (((unsigned long long)ext_csd[139]) << 24) + 279ded8a5f9SKuninori Morimoto (((unsigned long long)ext_csd[138]) << 16) + 280ded8a5f9SKuninori Morimoto (((unsigned long long)ext_csd[137]) << 8) + 281ded8a5f9SKuninori Morimoto (((unsigned long long)ext_csd[136])); 282b4493eeaSGrégory Soutadé if (mmc_card_blockaddr(card)) 283b4493eeaSGrégory Soutadé card->ext_csd.enhanced_area_offset <<= 9; 284b4493eeaSGrégory Soutadé /* 285b4493eeaSGrégory Soutadé * calculate the enhanced data area size, in kilobytes 286b4493eeaSGrégory Soutadé */ 287b4493eeaSGrégory Soutadé card->ext_csd.enhanced_area_size = 288b4493eeaSGrégory Soutadé (ext_csd[142] << 16) + (ext_csd[141] << 8) + 289b4493eeaSGrégory Soutadé ext_csd[140]; 290b4493eeaSGrégory Soutadé card->ext_csd.enhanced_area_size *= 291b4493eeaSGrégory Soutadé (size_t)(hc_erase_grp_sz * hc_wp_grp_sz); 292b4493eeaSGrégory Soutadé card->ext_csd.enhanced_area_size <<= 9; 293b4493eeaSGrégory Soutadé } else { 294994324bbSGrégory Soutadé pr_warn("%s: defines enhanced area without partition setting complete\n", 295994324bbSGrégory Soutadé mmc_hostname(card->host)); 296994324bbSGrégory Soutadé } 297b4493eeaSGrégory Soutadé } 298b4493eeaSGrégory Soutadé } 299b4493eeaSGrégory Soutadé 300f3d7c229SBradley Bolen static void mmc_part_add(struct mmc_card *card, u64 size, 3014facdde1SUlf Hansson unsigned int part_cfg, char *name, int idx, bool ro, 3024facdde1SUlf Hansson int area_type) 3034facdde1SUlf Hansson { 3044facdde1SUlf Hansson card->part[card->nr_parts].size = size; 3054facdde1SUlf Hansson card->part[card->nr_parts].part_cfg = part_cfg; 3064facdde1SUlf Hansson sprintf(card->part[card->nr_parts].name, name, idx); 3074facdde1SUlf Hansson card->part[card->nr_parts].force_ro = ro; 3084facdde1SUlf Hansson card->part[card->nr_parts].area_type = area_type; 3094facdde1SUlf Hansson card->nr_parts++; 3104facdde1SUlf Hansson } 3114facdde1SUlf Hansson 312b4493eeaSGrégory Soutadé static void mmc_manage_gp_partitions(struct mmc_card *card, u8 *ext_csd) 313b4493eeaSGrégory Soutadé { 314b4493eeaSGrégory Soutadé int idx; 315994324bbSGrégory Soutadé u8 hc_erase_grp_sz, hc_wp_grp_sz; 316f3d7c229SBradley Bolen u64 part_size; 317b4493eeaSGrégory Soutadé 318b4493eeaSGrégory Soutadé /* 319b4493eeaSGrégory Soutadé * General purpose partition feature support -- 320b4493eeaSGrégory Soutadé * If ext_csd has the size of general purpose partitions, 321b4493eeaSGrégory Soutadé * set size, part_cfg, partition name in mmc_part. 322b4493eeaSGrégory Soutadé */ 323b4493eeaSGrégory Soutadé if (ext_csd[EXT_CSD_PARTITION_SUPPORT] & 324b4493eeaSGrégory Soutadé EXT_CSD_PART_SUPPORT_PART_EN) { 325b4493eeaSGrégory Soutadé hc_erase_grp_sz = 326b4493eeaSGrégory Soutadé ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 327b4493eeaSGrégory Soutadé hc_wp_grp_sz = 328b4493eeaSGrégory Soutadé ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 329b4493eeaSGrégory Soutadé 330b4493eeaSGrégory Soutadé for (idx = 0; idx < MMC_NUM_GP_PARTITION; idx++) { 331b4493eeaSGrégory Soutadé if (!ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3] && 332b4493eeaSGrégory Soutadé !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] && 333b4493eeaSGrégory Soutadé !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2]) 334b4493eeaSGrégory Soutadé continue; 335994324bbSGrégory Soutadé if (card->ext_csd.partition_setting_completed == 0) { 336994324bbSGrégory Soutadé pr_warn("%s: has partition size defined without partition complete\n", 337994324bbSGrégory Soutadé mmc_hostname(card->host)); 338994324bbSGrégory Soutadé break; 339994324bbSGrégory Soutadé } 340b4493eeaSGrégory Soutadé part_size = 341b4493eeaSGrégory Soutadé (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2] 342b4493eeaSGrégory Soutadé << 16) + 343b4493eeaSGrégory Soutadé (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] 344b4493eeaSGrégory Soutadé << 8) + 345b4493eeaSGrégory Soutadé ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3]; 346f3d7c229SBradley Bolen part_size *= (hc_erase_grp_sz * hc_wp_grp_sz); 347b4493eeaSGrégory Soutadé mmc_part_add(card, part_size << 19, 348b4493eeaSGrégory Soutadé EXT_CSD_PART_CONFIG_ACC_GP0 + idx, 349b4493eeaSGrégory Soutadé "gp%d", idx, false, 350b4493eeaSGrégory Soutadé MMC_BLK_DATA_AREA_GP); 351b4493eeaSGrégory Soutadé } 352b4493eeaSGrégory Soutadé } 353b4493eeaSGrégory Soutadé } 354b4493eeaSGrégory Soutadé 3551c447116SAdrian Hunter /* Minimum partition switch timeout in milliseconds */ 3561c447116SAdrian Hunter #define MMC_MIN_PART_SWITCH_TIME 300 3571c447116SAdrian Hunter 35808ee80ccSPhilip Rakity /* 35908ee80ccSPhilip Rakity * Decode extended CSD. 36008ee80ccSPhilip Rakity */ 361076ec38aSUlf Hansson static int mmc_decode_ext_csd(struct mmc_card *card, u8 *ext_csd) 36208ee80ccSPhilip Rakity { 363e0c368d5SNamjae Jeon int err = 0, idx; 364f3d7c229SBradley Bolen u64 part_size; 36581f8a7beSHans de Goede struct device_node *np; 36681f8a7beSHans de Goede bool broken_hpi = false; 36708ee80ccSPhilip Rakity 3686da24b78SKyungmin Park /* Version is coded in the CSD_STRUCTURE byte in the EXT_CSD register */ 369f39b2dd9SPhilip Rakity card->ext_csd.raw_ext_csd_structure = ext_csd[EXT_CSD_STRUCTURE]; 3706da24b78SKyungmin Park if (card->csd.structure == 3) { 371f39b2dd9SPhilip Rakity if (card->ext_csd.raw_ext_csd_structure > 2) { 372a3c76eb9SGirish K S pr_err("%s: unrecognised EXT_CSD structure " 3738fdd8521SPierre Ossman "version %d\n", mmc_hostname(card->host), 374f39b2dd9SPhilip Rakity card->ext_csd.raw_ext_csd_structure); 3756da24b78SKyungmin Park err = -EINVAL; 3766da24b78SKyungmin Park goto out; 3776da24b78SKyungmin Park } 3786da24b78SKyungmin Park } 3796da24b78SKyungmin Park 38081f8a7beSHans de Goede np = mmc_of_find_child_device(card->host, 0); 38181f8a7beSHans de Goede if (np && of_device_is_compatible(np, "mmc-card")) 38281f8a7beSHans de Goede broken_hpi = of_property_read_bool(np, "broken-hpi"); 38381f8a7beSHans de Goede of_node_put(np); 38481f8a7beSHans de Goede 38503a59437SRomain Izard /* 38603a59437SRomain Izard * The EXT_CSD format is meant to be forward compatible. As long 38703a59437SRomain Izard * as CSD_STRUCTURE does not change, all values for EXT_CSD_REV 38803a59437SRomain Izard * are authorized, see JEDEC JESD84-B50 section B.8. 38903a59437SRomain Izard */ 3906da24b78SKyungmin Park card->ext_csd.rev = ext_csd[EXT_CSD_REV]; 391d7604d76SPierre Ossman 3925320226aSPratibhasagar V /* fixup device after ext_csd revision field is updated */ 3935320226aSPratibhasagar V mmc_fixup_device(card, mmc_ext_csd_fixups); 3945320226aSPratibhasagar V 395f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[0] = ext_csd[EXT_CSD_SEC_CNT + 0]; 396f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[1] = ext_csd[EXT_CSD_SEC_CNT + 1]; 397f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[2] = ext_csd[EXT_CSD_SEC_CNT + 2]; 398f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[3] = ext_csd[EXT_CSD_SEC_CNT + 3]; 399b1ebe384SJarkko Lavinen if (card->ext_csd.rev >= 2) { 4007ea239d9SPierre Ossman card->ext_csd.sectors = 4017ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 0] << 0 | 4027ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 1] << 8 | 4037ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 2] << 16 | 4047ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 3] << 24; 405fc8a0985SHanumath Prasad 406fc8a0985SHanumath Prasad /* Cards with density > 2GiB are sector addressed */ 407fc8a0985SHanumath Prasad if (card->ext_csd.sectors > (2u * 1024 * 1024 * 1024) / 512) 4087ea239d9SPierre Ossman mmc_card_set_blockaddr(card); 409d7604d76SPierre Ossman } 41096cf5f02SSeungwon Jeon 41181ac2af6SShawn Lin card->ext_csd.strobe_support = ext_csd[EXT_CSD_STROBE_SUPPORT]; 412f39b2dd9SPhilip Rakity card->ext_csd.raw_card_type = ext_csd[EXT_CSD_CARD_TYPE]; 41396cf5f02SSeungwon Jeon mmc_select_card_type(card); 4147ea239d9SPierre Ossman 415f39b2dd9SPhilip Rakity card->ext_csd.raw_s_a_timeout = ext_csd[EXT_CSD_S_A_TIMEOUT]; 416f39b2dd9SPhilip Rakity card->ext_csd.raw_erase_timeout_mult = 417f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; 418f39b2dd9SPhilip Rakity card->ext_csd.raw_hc_erase_grp_size = 419f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 420b1ebe384SJarkko Lavinen if (card->ext_csd.rev >= 3) { 421b1ebe384SJarkko Lavinen u8 sa_shift = ext_csd[EXT_CSD_S_A_TIMEOUT]; 422371a689fSAndrei Warkentin card->ext_csd.part_config = ext_csd[EXT_CSD_PART_CONFIG]; 423371a689fSAndrei Warkentin 424371a689fSAndrei Warkentin /* EXT_CSD value is in units of 10ms, but we store in ms */ 425371a689fSAndrei Warkentin card->ext_csd.part_time = 10 * ext_csd[EXT_CSD_PART_SWITCH_TIME]; 426b1ebe384SJarkko Lavinen 427b1ebe384SJarkko Lavinen /* Sleep / awake timeout in 100ns units */ 428b1ebe384SJarkko Lavinen if (sa_shift > 0 && sa_shift <= 0x17) 429b1ebe384SJarkko Lavinen card->ext_csd.sa_timeout = 430b1ebe384SJarkko Lavinen 1 << ext_csd[EXT_CSD_S_A_TIMEOUT]; 431dfe86cbaSAdrian Hunter card->ext_csd.erase_group_def = 432dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_ERASE_GROUP_DEF]; 433dfe86cbaSAdrian Hunter card->ext_csd.hc_erase_timeout = 300 * 434dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; 435dfe86cbaSAdrian Hunter card->ext_csd.hc_erase_size = 436dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] << 10; 437f4c5522bSAndrei Warkentin 438f4c5522bSAndrei Warkentin card->ext_csd.rel_sectors = ext_csd[EXT_CSD_REL_WR_SEC_C]; 439371a689fSAndrei Warkentin 440371a689fSAndrei Warkentin /* 441371a689fSAndrei Warkentin * There are two boot regions of equal size, defined in 442371a689fSAndrei Warkentin * multiples of 128K. 443371a689fSAndrei Warkentin */ 444e0c368d5SNamjae Jeon if (ext_csd[EXT_CSD_BOOT_MULT] && mmc_boot_partition_access(card->host)) { 445e0c368d5SNamjae Jeon for (idx = 0; idx < MMC_NUM_BOOT_PARTITION; idx++) { 446e0c368d5SNamjae Jeon part_size = ext_csd[EXT_CSD_BOOT_MULT] << 17; 447e0c368d5SNamjae Jeon mmc_part_add(card, part_size, 448e0c368d5SNamjae Jeon EXT_CSD_PART_CONFIG_ACC_BOOT0 + idx, 449add710eaSJohan Rudholm "boot%d", idx, true, 450add710eaSJohan Rudholm MMC_BLK_DATA_AREA_BOOT); 451e0c368d5SNamjae Jeon } 452e0c368d5SNamjae Jeon } 453b1ebe384SJarkko Lavinen } 454b1ebe384SJarkko Lavinen 455f39b2dd9SPhilip Rakity card->ext_csd.raw_hc_erase_gap_size = 456dd13b4edSJurgen Heeks ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 457f39b2dd9SPhilip Rakity card->ext_csd.raw_sec_trim_mult = 458f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_SEC_TRIM_MULT]; 459f39b2dd9SPhilip Rakity card->ext_csd.raw_sec_erase_mult = 460f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_SEC_ERASE_MULT]; 461f39b2dd9SPhilip Rakity card->ext_csd.raw_sec_feature_support = 462f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; 463f39b2dd9SPhilip Rakity card->ext_csd.raw_trim_mult = 464f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_TRIM_MULT]; 465836dc2feSPhilip Rakity card->ext_csd.raw_partition_support = ext_csd[EXT_CSD_PARTITION_SUPPORT]; 466b097e07fSAdrian Hunter card->ext_csd.raw_driver_strength = ext_csd[EXT_CSD_DRIVER_STRENGTH]; 467dfe86cbaSAdrian Hunter if (card->ext_csd.rev >= 4) { 46869803d4fSGrégory Soutadé if (ext_csd[EXT_CSD_PARTITION_SETTING_COMPLETED] & 46969803d4fSGrégory Soutadé EXT_CSD_PART_SETTING_COMPLETED) 47069803d4fSGrégory Soutadé card->ext_csd.partition_setting_completed = 1; 47169803d4fSGrégory Soutadé else 47269803d4fSGrégory Soutadé card->ext_csd.partition_setting_completed = 0; 47369803d4fSGrégory Soutadé 474b4493eeaSGrégory Soutadé mmc_manage_enhanced_area(card, ext_csd); 475709de99dSChuanxiao Dong 476b4493eeaSGrégory Soutadé mmc_manage_gp_partitions(card, ext_csd); 477e0c368d5SNamjae Jeon 478dfe86cbaSAdrian Hunter card->ext_csd.sec_trim_mult = 479dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_SEC_TRIM_MULT]; 480dfe86cbaSAdrian Hunter card->ext_csd.sec_erase_mult = 481dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_SEC_ERASE_MULT]; 482dfe86cbaSAdrian Hunter card->ext_csd.sec_feature_support = 483dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; 484dfe86cbaSAdrian Hunter card->ext_csd.trim_timeout = 300 * 485dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_TRIM_MULT]; 486add710eaSJohan Rudholm 487add710eaSJohan Rudholm /* 488add710eaSJohan Rudholm * Note that the call to mmc_part_add above defaults to read 489add710eaSJohan Rudholm * only. If this default assumption is changed, the call must 490add710eaSJohan Rudholm * take into account the value of boot_locked below. 491add710eaSJohan Rudholm */ 492add710eaSJohan Rudholm card->ext_csd.boot_ro_lock = ext_csd[EXT_CSD_BOOT_WP]; 493add710eaSJohan Rudholm card->ext_csd.boot_ro_lockable = true; 49460443712SFredrik Soderstedt 49560443712SFredrik Soderstedt /* Save power class values */ 49660443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_52_195 = 49760443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_52_195]; 49860443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_26_195 = 49960443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_26_195]; 50060443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_52_360 = 50160443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_52_360]; 50260443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_26_360 = 50360443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_26_360]; 50460443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_200_195 = 50560443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_200_195]; 50660443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_200_360 = 50760443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_200_360]; 50860443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_ddr_52_195 = 50960443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_DDR_52_195]; 51060443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_ddr_52_360 = 51160443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_DDR_52_360]; 5120a5b6438SSeungwon Jeon card->ext_csd.raw_pwr_cl_ddr_200_360 = 5130a5b6438SSeungwon Jeon ext_csd[EXT_CSD_PWR_CL_DDR_200_360]; 514dfe86cbaSAdrian Hunter } 515dfe86cbaSAdrian Hunter 516b2499518SAdrian Hunter if (card->ext_csd.rev >= 5) { 5177c4f10acSRomain Izard /* Adjust production date as per JEDEC JESD84-B451 */ 5187c4f10acSRomain Izard if (card->cid.year < 2010) 5197c4f10acSRomain Izard card->cid.year += 16; 5207c4f10acSRomain Izard 521950d56acSJaehoon Chung /* check whether the eMMC card supports BKOPS */ 522ba9f39a7SUlf Hansson if (ext_csd[EXT_CSD_BKOPS_SUPPORT] & 0x1) { 523950d56acSJaehoon Chung card->ext_csd.bkops = 1; 5240501be64SAlexey Skidanov card->ext_csd.man_bkops_en = 5250501be64SAlexey Skidanov (ext_csd[EXT_CSD_BKOPS_EN] & 5260501be64SAlexey Skidanov EXT_CSD_MANUAL_BKOPS_MASK); 527950d56acSJaehoon Chung card->ext_csd.raw_bkops_status = 528950d56acSJaehoon Chung ext_csd[EXT_CSD_BKOPS_STATUS]; 5296962c2fbSUri Yanai if (card->ext_csd.man_bkops_en) 5306962c2fbSUri Yanai pr_debug("%s: MAN_BKOPS_EN bit is set\n", 531950d56acSJaehoon Chung mmc_hostname(card->host)); 532efff8e78SUri Yanai card->ext_csd.auto_bkops_en = 533efff8e78SUri Yanai (ext_csd[EXT_CSD_BKOPS_EN] & 534efff8e78SUri Yanai EXT_CSD_AUTO_BKOPS_MASK); 535efff8e78SUri Yanai if (card->ext_csd.auto_bkops_en) 536efff8e78SUri Yanai pr_debug("%s: AUTO_BKOPS_EN bit is set\n", 537efff8e78SUri Yanai mmc_hostname(card->host)); 538950d56acSJaehoon Chung } 539950d56acSJaehoon Chung 540eb0d8f13SJaehoon Chung /* check whether the eMMC card supports HPI */ 5415320226aSPratibhasagar V if (!mmc_card_broken_hpi(card) && 5425320226aSPratibhasagar V !broken_hpi && (ext_csd[EXT_CSD_HPI_FEATURES] & 0x1)) { 543eb0d8f13SJaehoon Chung card->ext_csd.hpi = 1; 544eb0d8f13SJaehoon Chung if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x2) 545eb0d8f13SJaehoon Chung card->ext_csd.hpi_cmd = MMC_STOP_TRANSMISSION; 546eb0d8f13SJaehoon Chung else 547eb0d8f13SJaehoon Chung card->ext_csd.hpi_cmd = MMC_SEND_STATUS; 548eb0d8f13SJaehoon Chung /* 549eb0d8f13SJaehoon Chung * Indicate the maximum timeout to close 550eb0d8f13SJaehoon Chung * a command interrupted by HPI 551eb0d8f13SJaehoon Chung */ 552eb0d8f13SJaehoon Chung card->ext_csd.out_of_int_time = 553eb0d8f13SJaehoon Chung ext_csd[EXT_CSD_OUT_OF_INTERRUPT_TIME] * 10; 554eb0d8f13SJaehoon Chung } 555eb0d8f13SJaehoon Chung 556f4c5522bSAndrei Warkentin card->ext_csd.rel_param = ext_csd[EXT_CSD_WR_REL_PARAM]; 557b2499518SAdrian Hunter card->ext_csd.rst_n_function = ext_csd[EXT_CSD_RST_N_FUNCTION]; 558090d25feSLoic Pallardy 559090d25feSLoic Pallardy /* 560090d25feSLoic Pallardy * RPMB regions are defined in multiples of 128K. 561090d25feSLoic Pallardy */ 562090d25feSLoic Pallardy card->ext_csd.raw_rpmb_size_mult = ext_csd[EXT_CSD_RPMB_MULT]; 563d0123ccaSBalaji T K if (ext_csd[EXT_CSD_RPMB_MULT] && mmc_host_cmd23(card->host)) { 564090d25feSLoic Pallardy mmc_part_add(card, ext_csd[EXT_CSD_RPMB_MULT] << 17, 565090d25feSLoic Pallardy EXT_CSD_PART_CONFIG_ACC_RPMB, 566090d25feSLoic Pallardy "rpmb", 0, false, 567090d25feSLoic Pallardy MMC_BLK_DATA_AREA_RPMB); 568090d25feSLoic Pallardy } 569b2499518SAdrian Hunter } 570f4c5522bSAndrei Warkentin 5715238acbeSAndrei Warkentin card->ext_csd.raw_erased_mem_count = ext_csd[EXT_CSD_ERASED_MEM_CONT]; 572dfe86cbaSAdrian Hunter if (ext_csd[EXT_CSD_ERASED_MEM_CONT]) 573dfe86cbaSAdrian Hunter card->erased_byte = 0xFF; 574dfe86cbaSAdrian Hunter else 575dfe86cbaSAdrian Hunter card->erased_byte = 0x0; 576dfe86cbaSAdrian Hunter 577336c716aSSeungwon Jeon /* eMMC v4.5 or later */ 578fe1b5700SUlf Hansson card->ext_csd.generic_cmd6_time = DEFAULT_CMD6_TIMEOUT_MS; 579bec8726aSGirish K S if (card->ext_csd.rev >= 6) { 580336c716aSSeungwon Jeon card->ext_csd.feature_support |= MMC_DISCARD_FEATURE; 581336c716aSSeungwon Jeon 582b23cf0bdSSeungwon Jeon card->ext_csd.generic_cmd6_time = 10 * 583b23cf0bdSSeungwon Jeon ext_csd[EXT_CSD_GENERIC_CMD6_TIME]; 584bec8726aSGirish K S card->ext_csd.power_off_longtime = 10 * 585bec8726aSGirish K S ext_csd[EXT_CSD_POWER_OFF_LONG_TIME]; 586b23cf0bdSSeungwon Jeon 587881d1c25SSeungwon Jeon card->ext_csd.cache_size = 588881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 0] << 0 | 589881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 1] << 8 | 590881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 2] << 16 | 591881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 3] << 24; 5924265900eSSaugata Das 5934265900eSSaugata Das if (ext_csd[EXT_CSD_DATA_SECTOR_SIZE] == 1) 5944265900eSSaugata Das card->ext_csd.data_sector_size = 4096; 5954265900eSSaugata Das else 5964265900eSSaugata Das card->ext_csd.data_sector_size = 512; 5974265900eSSaugata Das 5984265900eSSaugata Das if ((ext_csd[EXT_CSD_DATA_TAG_SUPPORT] & 1) && 5994265900eSSaugata Das (ext_csd[EXT_CSD_TAG_UNIT_SIZE] <= 8)) { 6004265900eSSaugata Das card->ext_csd.data_tag_unit_size = 6014265900eSSaugata Das ((unsigned int) 1 << ext_csd[EXT_CSD_TAG_UNIT_SIZE]) * 6024265900eSSaugata Das (card->ext_csd.data_sector_size); 6034265900eSSaugata Das } else { 6044265900eSSaugata Das card->ext_csd.data_tag_unit_size = 0; 6054265900eSSaugata Das } 606abd9ac14SSeungwon Jeon 607abd9ac14SSeungwon Jeon card->ext_csd.max_packed_writes = 608abd9ac14SSeungwon Jeon ext_csd[EXT_CSD_MAX_PACKED_WRITES]; 609abd9ac14SSeungwon Jeon card->ext_csd.max_packed_reads = 610abd9ac14SSeungwon Jeon ext_csd[EXT_CSD_MAX_PACKED_READS]; 611a5075eb9SSaugata Das } else { 612a5075eb9SSaugata Das card->ext_csd.data_sector_size = 512; 613336c716aSSeungwon Jeon } 614881d1c25SSeungwon Jeon 61566fbacccSAdrian Hunter /* 61666fbacccSAdrian Hunter * GENERIC_CMD6_TIME is to be used "unless a specific timeout is defined 61766fbacccSAdrian Hunter * when accessing a specific field", so use it here if there is no 61866fbacccSAdrian Hunter * PARTITION_SWITCH_TIME. 61966fbacccSAdrian Hunter */ 62066fbacccSAdrian Hunter if (!card->ext_csd.part_time) 62166fbacccSAdrian Hunter card->ext_csd.part_time = card->ext_csd.generic_cmd6_time; 62266fbacccSAdrian Hunter /* Some eMMC set the value too low so set a minimum */ 62366fbacccSAdrian Hunter if (card->ext_csd.part_time < MMC_MIN_PART_SWITCH_TIME) 62466fbacccSAdrian Hunter card->ext_csd.part_time = MMC_MIN_PART_SWITCH_TIME; 62566fbacccSAdrian Hunter 6260f762426SGwendal Grignou /* eMMC v5 or later */ 6270f762426SGwendal Grignou if (card->ext_csd.rev >= 7) { 6280f762426SGwendal Grignou memcpy(card->ext_csd.fwrev, &ext_csd[EXT_CSD_FIRMWARE_VERSION], 6290f762426SGwendal Grignou MMC_FIRMWARE_LEN); 6300f762426SGwendal Grignou card->ext_csd.ffu_capable = 6310f762426SGwendal Grignou (ext_csd[EXT_CSD_SUPPORTED_MODE] & 0x1) && 6320f762426SGwendal Grignou !(ext_csd[EXT_CSD_FW_CONFIG] & 0x1); 63346bc5c40SJungseung Lee 63446bc5c40SJungseung Lee card->ext_csd.pre_eol_info = ext_csd[EXT_CSD_PRE_EOL_INFO]; 63546bc5c40SJungseung Lee card->ext_csd.device_life_time_est_typ_a = 63646bc5c40SJungseung Lee ext_csd[EXT_CSD_DEVICE_LIFE_TIME_EST_TYP_A]; 63746bc5c40SJungseung Lee card->ext_csd.device_life_time_est_typ_b = 63846bc5c40SJungseung Lee ext_csd[EXT_CSD_DEVICE_LIFE_TIME_EST_TYP_B]; 6390f762426SGwendal Grignou } 640925ff3a7SAdrian Hunter 641925ff3a7SAdrian Hunter /* eMMC v5.1 or later */ 642925ff3a7SAdrian Hunter if (card->ext_csd.rev >= 8) { 643925ff3a7SAdrian Hunter card->ext_csd.cmdq_support = ext_csd[EXT_CSD_CMDQ_SUPPORT] & 644925ff3a7SAdrian Hunter EXT_CSD_CMDQ_SUPPORTED; 645925ff3a7SAdrian Hunter card->ext_csd.cmdq_depth = (ext_csd[EXT_CSD_CMDQ_DEPTH] & 646925ff3a7SAdrian Hunter EXT_CSD_CMDQ_DEPTH_MASK) + 1; 647925ff3a7SAdrian Hunter /* Exclude inefficiently small queue depths */ 648925ff3a7SAdrian Hunter if (card->ext_csd.cmdq_depth <= 2) { 649925ff3a7SAdrian Hunter card->ext_csd.cmdq_support = false; 650925ff3a7SAdrian Hunter card->ext_csd.cmdq_depth = 0; 651925ff3a7SAdrian Hunter } 652925ff3a7SAdrian Hunter if (card->ext_csd.cmdq_support) { 653925ff3a7SAdrian Hunter pr_debug("%s: Command Queue supported depth %u\n", 654925ff3a7SAdrian Hunter mmc_hostname(card->host), 655925ff3a7SAdrian Hunter card->ext_csd.cmdq_depth); 656925ff3a7SAdrian Hunter } 657064f7e58SKrishna Konda card->ext_csd.enhanced_rpmb_supported = 658064f7e58SKrishna Konda (card->ext_csd.rel_param & 659064f7e58SKrishna Konda EXT_CSD_WR_REL_PARAM_EN_RPMB_REL_WR); 660925ff3a7SAdrian Hunter } 6617ea239d9SPierre Ossman out: 66208ee80ccSPhilip Rakity return err; 66308ee80ccSPhilip Rakity } 6647ea239d9SPierre Ossman 665076ec38aSUlf Hansson static int mmc_read_ext_csd(struct mmc_card *card) 666076ec38aSUlf Hansson { 667c197787cSUlf Hansson u8 *ext_csd; 668076ec38aSUlf Hansson int err; 669076ec38aSUlf Hansson 670c197787cSUlf Hansson if (!mmc_can_ext_csd(card)) 671c197787cSUlf Hansson return 0; 672c197787cSUlf Hansson 673076ec38aSUlf Hansson err = mmc_get_ext_csd(card, &ext_csd); 674c197787cSUlf Hansson if (err) { 675c197787cSUlf Hansson /* If the host or the card can't do the switch, 676c197787cSUlf Hansson * fail more gracefully. */ 677c197787cSUlf Hansson if ((err != -EINVAL) 678c197787cSUlf Hansson && (err != -ENOSYS) 679c197787cSUlf Hansson && (err != -EFAULT)) 680076ec38aSUlf Hansson return err; 681076ec38aSUlf Hansson 682c197787cSUlf Hansson /* 683c197787cSUlf Hansson * High capacity cards should have this "magic" size 684c197787cSUlf Hansson * stored in their CSD. 685c197787cSUlf Hansson */ 686c197787cSUlf Hansson if (card->csd.capacity == (4096 * 512)) { 687c197787cSUlf Hansson pr_err("%s: unable to read EXT_CSD on a possible high capacity card. Card will be ignored.\n", 688c197787cSUlf Hansson mmc_hostname(card->host)); 689c197787cSUlf Hansson } else { 690c197787cSUlf Hansson pr_warn("%s: unable to read EXT_CSD, performance might suffer\n", 691c197787cSUlf Hansson mmc_hostname(card->host)); 692c197787cSUlf Hansson err = 0; 693c197787cSUlf Hansson } 694c197787cSUlf Hansson 695c197787cSUlf Hansson return err; 696c197787cSUlf Hansson } 697c197787cSUlf Hansson 698076ec38aSUlf Hansson err = mmc_decode_ext_csd(card, ext_csd); 699076ec38aSUlf Hansson kfree(ext_csd); 700076ec38aSUlf Hansson return err; 701076ec38aSUlf Hansson } 702076ec38aSUlf Hansson 703f39b2dd9SPhilip Rakity static int mmc_compare_ext_csds(struct mmc_card *card, unsigned bus_width) 70408ee80ccSPhilip Rakity { 70508ee80ccSPhilip Rakity u8 *bw_ext_csd; 70608ee80ccSPhilip Rakity int err; 70708ee80ccSPhilip Rakity 708f39b2dd9SPhilip Rakity if (bus_width == MMC_BUS_WIDTH_1) 709f39b2dd9SPhilip Rakity return 0; 71008ee80ccSPhilip Rakity 711f39b2dd9SPhilip Rakity err = mmc_get_ext_csd(card, &bw_ext_csd); 712c197787cSUlf Hansson if (err) 713c197787cSUlf Hansson return err; 71408ee80ccSPhilip Rakity 71508ee80ccSPhilip Rakity /* only compare read only fields */ 716dd13b4edSJurgen Heeks err = !((card->ext_csd.raw_partition_support == 71708ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_PARTITION_SUPPORT]) && 718f39b2dd9SPhilip Rakity (card->ext_csd.raw_erased_mem_count == 71908ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_ERASED_MEM_CONT]) && 720f39b2dd9SPhilip Rakity (card->ext_csd.rev == 72108ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_REV]) && 722f39b2dd9SPhilip Rakity (card->ext_csd.raw_ext_csd_structure == 72308ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_STRUCTURE]) && 724f39b2dd9SPhilip Rakity (card->ext_csd.raw_card_type == 72508ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_CARD_TYPE]) && 726f39b2dd9SPhilip Rakity (card->ext_csd.raw_s_a_timeout == 72708ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_S_A_TIMEOUT]) && 728f39b2dd9SPhilip Rakity (card->ext_csd.raw_hc_erase_gap_size == 72908ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_HC_WP_GRP_SIZE]) && 730f39b2dd9SPhilip Rakity (card->ext_csd.raw_erase_timeout_mult == 73108ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]) && 732f39b2dd9SPhilip Rakity (card->ext_csd.raw_hc_erase_grp_size == 73308ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]) && 734f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_trim_mult == 73508ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_TRIM_MULT]) && 736f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_erase_mult == 73708ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_ERASE_MULT]) && 738f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_feature_support == 73908ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]) && 740f39b2dd9SPhilip Rakity (card->ext_csd.raw_trim_mult == 74108ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_TRIM_MULT]) && 742f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[0] == 743f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 0]) && 744f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[1] == 745f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 1]) && 746f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[2] == 747f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 2]) && 748f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[3] == 74960443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_SEC_CNT + 3]) && 75060443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_52_195 == 75160443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_52_195]) && 75260443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_26_195 == 75360443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_26_195]) && 75460443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_52_360 == 75560443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_52_360]) && 75660443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_26_360 == 75760443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_26_360]) && 75860443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_200_195 == 75960443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_200_195]) && 76060443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_200_360 == 76160443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_200_360]) && 76260443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_ddr_52_195 == 76360443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_195]) && 76460443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_ddr_52_360 == 7650a5b6438SSeungwon Jeon bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_360]) && 7660a5b6438SSeungwon Jeon (card->ext_csd.raw_pwr_cl_ddr_200_360 == 7670a5b6438SSeungwon Jeon bw_ext_csd[EXT_CSD_PWR_CL_DDR_200_360])); 7680a5b6438SSeungwon Jeon 76908ee80ccSPhilip Rakity if (err) 77008ee80ccSPhilip Rakity err = -EINVAL; 77108ee80ccSPhilip Rakity 77200b41b58SUlf Hansson kfree(bw_ext_csd); 7737ea239d9SPierre Ossman return err; 7747ea239d9SPierre Ossman } 7757ea239d9SPierre Ossman 77651ec92e2SPierre Ossman MMC_DEV_ATTR(cid, "%08x%08x%08x%08x\n", card->raw_cid[0], card->raw_cid[1], 77751ec92e2SPierre Ossman card->raw_cid[2], card->raw_cid[3]); 77851ec92e2SPierre Ossman MMC_DEV_ATTR(csd, "%08x%08x%08x%08x\n", card->raw_csd[0], card->raw_csd[1], 77951ec92e2SPierre Ossman card->raw_csd[2], card->raw_csd[3]); 78051ec92e2SPierre Ossman MMC_DEV_ATTR(date, "%02d/%04d\n", card->cid.month, card->cid.year); 781dfe86cbaSAdrian Hunter MMC_DEV_ATTR(erase_size, "%u\n", card->erase_size << 9); 782dfe86cbaSAdrian Hunter MMC_DEV_ATTR(preferred_erase_size, "%u\n", card->pref_erase << 9); 7830f762426SGwendal Grignou MMC_DEV_ATTR(ffu_capable, "%d\n", card->ext_csd.ffu_capable); 78451ec92e2SPierre Ossman MMC_DEV_ATTR(hwrev, "0x%x\n", card->cid.hwrev); 78551ec92e2SPierre Ossman MMC_DEV_ATTR(manfid, "0x%06x\n", card->cid.manfid); 78651ec92e2SPierre Ossman MMC_DEV_ATTR(name, "%s\n", card->cid.prod_name); 78751ec92e2SPierre Ossman MMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid); 78851e7e8b6SBernie Thompson MMC_DEV_ATTR(prv, "0x%x\n", card->cid.prv); 78904fa0540SJin Qian MMC_DEV_ATTR(rev, "0x%x\n", card->ext_csd.rev); 79080a780a1SBastian Stender MMC_DEV_ATTR(pre_eol_info, "0x%02x\n", card->ext_csd.pre_eol_info); 79146bc5c40SJungseung Lee MMC_DEV_ATTR(life_time, "0x%02x 0x%02x\n", 79246bc5c40SJungseung Lee card->ext_csd.device_life_time_est_typ_a, 79346bc5c40SJungseung Lee card->ext_csd.device_life_time_est_typ_b); 79451ec92e2SPierre Ossman MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial); 795709de99dSChuanxiao Dong MMC_DEV_ATTR(enhanced_area_offset, "%llu\n", 796709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset); 797709de99dSChuanxiao Dong MMC_DEV_ATTR(enhanced_area_size, "%u\n", card->ext_csd.enhanced_area_size); 798188cc042SLoic Pallardy MMC_DEV_ATTR(raw_rpmb_size_mult, "%#x\n", card->ext_csd.raw_rpmb_size_mult); 799064f7e58SKrishna Konda MMC_DEV_ATTR(enhanced_rpmb_supported, "%#x\n", 800064f7e58SKrishna Konda card->ext_csd.enhanced_rpmb_supported); 801188cc042SLoic Pallardy MMC_DEV_ATTR(rel_sectors, "%#x\n", card->ext_csd.rel_sectors); 802c892b0d8SBastian Stender MMC_DEV_ATTR(ocr, "0x%08x\n", card->ocr); 803974e85e9SHarish Jenny K N MMC_DEV_ATTR(rca, "0x%04x\n", card->rca); 804b658af71SAdrian Hunter MMC_DEV_ATTR(cmdq_en, "%d\n", card->ext_csd.cmdq_en); 80551ec92e2SPierre Ossman 8060f762426SGwendal Grignou static ssize_t mmc_fwrev_show(struct device *dev, 8070f762426SGwendal Grignou struct device_attribute *attr, 8080f762426SGwendal Grignou char *buf) 8090f762426SGwendal Grignou { 8100f762426SGwendal Grignou struct mmc_card *card = mmc_dev_to_card(dev); 8110f762426SGwendal Grignou 8120f762426SGwendal Grignou if (card->ext_csd.rev < 7) { 8130f762426SGwendal Grignou return sprintf(buf, "0x%x\n", card->cid.fwrev); 8140f762426SGwendal Grignou } else { 8150f762426SGwendal Grignou return sprintf(buf, "0x%*phN\n", MMC_FIRMWARE_LEN, 8160f762426SGwendal Grignou card->ext_csd.fwrev); 8170f762426SGwendal Grignou } 8180f762426SGwendal Grignou } 8190f762426SGwendal Grignou 8200f762426SGwendal Grignou static DEVICE_ATTR(fwrev, S_IRUGO, mmc_fwrev_show, NULL); 8210f762426SGwendal Grignou 8226825a606SBojan Prtvar static ssize_t mmc_dsr_show(struct device *dev, 8236825a606SBojan Prtvar struct device_attribute *attr, 8246825a606SBojan Prtvar char *buf) 8256825a606SBojan Prtvar { 8266825a606SBojan Prtvar struct mmc_card *card = mmc_dev_to_card(dev); 8276825a606SBojan Prtvar struct mmc_host *host = card->host; 8286825a606SBojan Prtvar 8296825a606SBojan Prtvar if (card->csd.dsr_imp && host->dsr_req) 8306825a606SBojan Prtvar return sprintf(buf, "0x%x\n", host->dsr); 8316825a606SBojan Prtvar else 8326825a606SBojan Prtvar /* return default DSR value */ 8336825a606SBojan Prtvar return sprintf(buf, "0x%x\n", 0x404); 8346825a606SBojan Prtvar } 8356825a606SBojan Prtvar 8366825a606SBojan Prtvar static DEVICE_ATTR(dsr, S_IRUGO, mmc_dsr_show, NULL); 8376825a606SBojan Prtvar 83851ec92e2SPierre Ossman static struct attribute *mmc_std_attrs[] = { 83951ec92e2SPierre Ossman &dev_attr_cid.attr, 84051ec92e2SPierre Ossman &dev_attr_csd.attr, 84151ec92e2SPierre Ossman &dev_attr_date.attr, 842dfe86cbaSAdrian Hunter &dev_attr_erase_size.attr, 843dfe86cbaSAdrian Hunter &dev_attr_preferred_erase_size.attr, 84451ec92e2SPierre Ossman &dev_attr_fwrev.attr, 8450f762426SGwendal Grignou &dev_attr_ffu_capable.attr, 84651ec92e2SPierre Ossman &dev_attr_hwrev.attr, 84751ec92e2SPierre Ossman &dev_attr_manfid.attr, 84851ec92e2SPierre Ossman &dev_attr_name.attr, 84951ec92e2SPierre Ossman &dev_attr_oemid.attr, 85051e7e8b6SBernie Thompson &dev_attr_prv.attr, 85104fa0540SJin Qian &dev_attr_rev.attr, 85246bc5c40SJungseung Lee &dev_attr_pre_eol_info.attr, 85346bc5c40SJungseung Lee &dev_attr_life_time.attr, 85451ec92e2SPierre Ossman &dev_attr_serial.attr, 855709de99dSChuanxiao Dong &dev_attr_enhanced_area_offset.attr, 856709de99dSChuanxiao Dong &dev_attr_enhanced_area_size.attr, 857188cc042SLoic Pallardy &dev_attr_raw_rpmb_size_mult.attr, 858064f7e58SKrishna Konda &dev_attr_enhanced_rpmb_supported.attr, 859188cc042SLoic Pallardy &dev_attr_rel_sectors.attr, 8605fb06af7SBojan Prtvar &dev_attr_ocr.attr, 861974e85e9SHarish Jenny K N &dev_attr_rca.attr, 8626825a606SBojan Prtvar &dev_attr_dsr.attr, 863b658af71SAdrian Hunter &dev_attr_cmdq_en.attr, 86451ec92e2SPierre Ossman NULL, 86551ec92e2SPierre Ossman }; 866d1e58212SAxel Lin ATTRIBUTE_GROUPS(mmc_std); 86751ec92e2SPierre Ossman 86851ec92e2SPierre Ossman static struct device_type mmc_type = { 869d1e58212SAxel Lin .groups = mmc_std_groups, 87051ec92e2SPierre Ossman }; 87151ec92e2SPierre Ossman 8727ea239d9SPierre Ossman /* 873b87d8dbfSGirish K S * Select the PowerClass for the current bus width 874b87d8dbfSGirish K S * If power class is defined for 4/8 bit bus in the 875b87d8dbfSGirish K S * extended CSD register, select it by executing the 876b87d8dbfSGirish K S * mmc_switch command. 877b87d8dbfSGirish K S */ 8782385049dSSeungwon Jeon static int __mmc_select_powerclass(struct mmc_card *card, 87960443712SFredrik Soderstedt unsigned int bus_width) 880b87d8dbfSGirish K S { 8812385049dSSeungwon Jeon struct mmc_host *host = card->host; 8822385049dSSeungwon Jeon struct mmc_ext_csd *ext_csd = &card->ext_csd; 88360443712SFredrik Soderstedt unsigned int pwrclass_val = 0; 8842385049dSSeungwon Jeon int err = 0; 885b87d8dbfSGirish K S 886b87d8dbfSGirish K S switch (1 << host->ios.vdd) { 887b87d8dbfSGirish K S case MMC_VDD_165_195: 8882385049dSSeungwon Jeon if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) 8892385049dSSeungwon Jeon pwrclass_val = ext_csd->raw_pwr_cl_26_195; 8902385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR) 89160443712SFredrik Soderstedt pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? 8922385049dSSeungwon Jeon ext_csd->raw_pwr_cl_52_195 : 8932385049dSSeungwon Jeon ext_csd->raw_pwr_cl_ddr_52_195; 8942385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HS200_MAX_DTR) 8952385049dSSeungwon Jeon pwrclass_val = ext_csd->raw_pwr_cl_200_195; 896b87d8dbfSGirish K S break; 89793fc5a47SSubhash Jadavani case MMC_VDD_27_28: 89893fc5a47SSubhash Jadavani case MMC_VDD_28_29: 89993fc5a47SSubhash Jadavani case MMC_VDD_29_30: 90093fc5a47SSubhash Jadavani case MMC_VDD_30_31: 90193fc5a47SSubhash Jadavani case MMC_VDD_31_32: 902b87d8dbfSGirish K S case MMC_VDD_32_33: 903b87d8dbfSGirish K S case MMC_VDD_33_34: 904b87d8dbfSGirish K S case MMC_VDD_34_35: 905b87d8dbfSGirish K S case MMC_VDD_35_36: 9062385049dSSeungwon Jeon if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) 9072385049dSSeungwon Jeon pwrclass_val = ext_csd->raw_pwr_cl_26_360; 9082385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR) 90960443712SFredrik Soderstedt pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? 9102385049dSSeungwon Jeon ext_csd->raw_pwr_cl_52_360 : 9112385049dSSeungwon Jeon ext_csd->raw_pwr_cl_ddr_52_360; 9122385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HS200_MAX_DTR) 9130a5b6438SSeungwon Jeon pwrclass_val = (bus_width == EXT_CSD_DDR_BUS_WIDTH_8) ? 9140a5b6438SSeungwon Jeon ext_csd->raw_pwr_cl_ddr_200_360 : 9150a5b6438SSeungwon Jeon ext_csd->raw_pwr_cl_200_360; 916b87d8dbfSGirish K S break; 917b87d8dbfSGirish K S default: 9186606110dSJoe Perches pr_warn("%s: Voltage range not supported for power class\n", 9196606110dSJoe Perches mmc_hostname(host)); 920b87d8dbfSGirish K S return -EINVAL; 921b87d8dbfSGirish K S } 922b87d8dbfSGirish K S 923b87d8dbfSGirish K S if (bus_width & (EXT_CSD_BUS_WIDTH_8 | EXT_CSD_DDR_BUS_WIDTH_8)) 924b87d8dbfSGirish K S pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_8BIT_MASK) >> 925b87d8dbfSGirish K S EXT_CSD_PWR_CL_8BIT_SHIFT; 926b87d8dbfSGirish K S else 927b87d8dbfSGirish K S pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_4BIT_MASK) >> 928b87d8dbfSGirish K S EXT_CSD_PWR_CL_4BIT_SHIFT; 929b87d8dbfSGirish K S 930b87d8dbfSGirish K S /* If the power class is different from the default value */ 931b87d8dbfSGirish K S if (pwrclass_val > 0) { 932b87d8dbfSGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 933b87d8dbfSGirish K S EXT_CSD_POWER_CLASS, 934b87d8dbfSGirish K S pwrclass_val, 93571fe3eb0SSeungwon Jeon card->ext_csd.generic_cmd6_time); 936b87d8dbfSGirish K S } 937b87d8dbfSGirish K S 938b87d8dbfSGirish K S return err; 939b87d8dbfSGirish K S } 940b87d8dbfSGirish K S 9412385049dSSeungwon Jeon static int mmc_select_powerclass(struct mmc_card *card) 9422385049dSSeungwon Jeon { 9432385049dSSeungwon Jeon struct mmc_host *host = card->host; 9442385049dSSeungwon Jeon u32 bus_width, ext_csd_bits; 9452385049dSSeungwon Jeon int err, ddr; 9462385049dSSeungwon Jeon 9472385049dSSeungwon Jeon /* Power class selection is supported for versions >= 4.0 */ 948148bcab2SUlf Hansson if (!mmc_can_ext_csd(card)) 9492385049dSSeungwon Jeon return 0; 9502385049dSSeungwon Jeon 9512385049dSSeungwon Jeon bus_width = host->ios.bus_width; 9522385049dSSeungwon Jeon /* Power class values are defined only for 4/8 bit bus */ 9532385049dSSeungwon Jeon if (bus_width == MMC_BUS_WIDTH_1) 9542385049dSSeungwon Jeon return 0; 9552385049dSSeungwon Jeon 9562385049dSSeungwon Jeon ddr = card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52; 9572385049dSSeungwon Jeon if (ddr) 9582385049dSSeungwon Jeon ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? 9592385049dSSeungwon Jeon EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; 9602385049dSSeungwon Jeon else 9612385049dSSeungwon Jeon ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? 9622385049dSSeungwon Jeon EXT_CSD_BUS_WIDTH_8 : EXT_CSD_BUS_WIDTH_4; 9632385049dSSeungwon Jeon 9642385049dSSeungwon Jeon err = __mmc_select_powerclass(card, ext_csd_bits); 9652385049dSSeungwon Jeon if (err) 9662385049dSSeungwon Jeon pr_warn("%s: power class selection to bus width %d ddr %d failed\n", 9672385049dSSeungwon Jeon mmc_hostname(host), 1 << bus_width, ddr); 9682385049dSSeungwon Jeon 9692385049dSSeungwon Jeon return err; 9702385049dSSeungwon Jeon } 9712385049dSSeungwon Jeon 972b87d8dbfSGirish K S /* 973577fb131SSeungwon Jeon * Set the bus speed for the selected speed mode. 974a4924c71SGirish K S */ 975577fb131SSeungwon Jeon static void mmc_set_bus_speed(struct mmc_card *card) 976a4924c71SGirish K S { 977577fb131SSeungwon Jeon unsigned int max_dtr = (unsigned int)-1; 978577fb131SSeungwon Jeon 9790a5b6438SSeungwon Jeon if ((mmc_card_hs200(card) || mmc_card_hs400(card)) && 9800a5b6438SSeungwon Jeon max_dtr > card->ext_csd.hs200_max_dtr) 981577fb131SSeungwon Jeon max_dtr = card->ext_csd.hs200_max_dtr; 982577fb131SSeungwon Jeon else if (mmc_card_hs(card) && max_dtr > card->ext_csd.hs_max_dtr) 983577fb131SSeungwon Jeon max_dtr = card->ext_csd.hs_max_dtr; 984577fb131SSeungwon Jeon else if (max_dtr > card->csd.max_dtr) 985577fb131SSeungwon Jeon max_dtr = card->csd.max_dtr; 986577fb131SSeungwon Jeon 987577fb131SSeungwon Jeon mmc_set_clock(card->host, max_dtr); 988577fb131SSeungwon Jeon } 989577fb131SSeungwon Jeon 990577fb131SSeungwon Jeon /* 991577fb131SSeungwon Jeon * Select the bus width amoung 4-bit and 8-bit(SDR). 992577fb131SSeungwon Jeon * If the bus width is changed successfully, return the selected width value. 993577fb131SSeungwon Jeon * Zero is returned instead of error value if the wide width is not supported. 994577fb131SSeungwon Jeon */ 995577fb131SSeungwon Jeon static int mmc_select_bus_width(struct mmc_card *card) 996577fb131SSeungwon Jeon { 997a4924c71SGirish K S static unsigned ext_csd_bits[] = { 998a4924c71SGirish K S EXT_CSD_BUS_WIDTH_8, 999577fb131SSeungwon Jeon EXT_CSD_BUS_WIDTH_4, 1000a4924c71SGirish K S }; 1001a4924c71SGirish K S static unsigned bus_widths[] = { 1002a4924c71SGirish K S MMC_BUS_WIDTH_8, 1003577fb131SSeungwon Jeon MMC_BUS_WIDTH_4, 1004a4924c71SGirish K S }; 1005577fb131SSeungwon Jeon struct mmc_host *host = card->host; 1006577fb131SSeungwon Jeon unsigned idx, bus_width = 0; 1007577fb131SSeungwon Jeon int err = 0; 1008a4924c71SGirish K S 10091c2d26e3SAlexandre Belloni if (!mmc_can_ext_csd(card) || 1010577fb131SSeungwon Jeon !(host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) 1011577fb131SSeungwon Jeon return 0; 1012a4924c71SGirish K S 1013577fb131SSeungwon Jeon idx = (host->caps & MMC_CAP_8_BIT_DATA) ? 0 : 1; 1014a4924c71SGirish K S 1015a4924c71SGirish K S /* 1016a4924c71SGirish K S * Unlike SD, MMC cards dont have a configuration register to notify 1017a4924c71SGirish K S * supported bus width. So bus test command should be run to identify 1018a4924c71SGirish K S * the supported bus width or compare the ext csd values of current 1019a4924c71SGirish K S * bus width and ext csd values of 1 bit mode read earlier. 1020a4924c71SGirish K S */ 1021577fb131SSeungwon Jeon for (; idx < ARRAY_SIZE(bus_widths); idx++) { 1022a4924c71SGirish K S /* 1023a4924c71SGirish K S * Host is capable of 8bit transfer, then switch 1024a4924c71SGirish K S * the device to work in 8bit transfer mode. If the 1025a4924c71SGirish K S * mmc switch command returns error then switch to 1026a4924c71SGirish K S * 4bit transfer mode. On success set the corresponding 1027a4924c71SGirish K S * bus width on the host. 1028a4924c71SGirish K S */ 1029a4924c71SGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1030a4924c71SGirish K S EXT_CSD_BUS_WIDTH, 1031a4924c71SGirish K S ext_csd_bits[idx], 1032a4924c71SGirish K S card->ext_csd.generic_cmd6_time); 1033a4924c71SGirish K S if (err) 1034a4924c71SGirish K S continue; 1035a4924c71SGirish K S 1036577fb131SSeungwon Jeon bus_width = bus_widths[idx]; 1037577fb131SSeungwon Jeon mmc_set_bus_width(host, bus_width); 1038a4924c71SGirish K S 1039577fb131SSeungwon Jeon /* 1040577fb131SSeungwon Jeon * If controller can't handle bus width test, 1041577fb131SSeungwon Jeon * compare ext_csd previously read in 1 bit mode 1042577fb131SSeungwon Jeon * against ext_csd at new bus width 1043577fb131SSeungwon Jeon */ 1044a4924c71SGirish K S if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST)) 1045577fb131SSeungwon Jeon err = mmc_compare_ext_csds(card, bus_width); 1046a4924c71SGirish K S else 1047577fb131SSeungwon Jeon err = mmc_bus_test(card, bus_width); 1048577fb131SSeungwon Jeon 1049577fb131SSeungwon Jeon if (!err) { 1050577fb131SSeungwon Jeon err = bus_width; 1051a4924c71SGirish K S break; 1052577fb131SSeungwon Jeon } else { 1053577fb131SSeungwon Jeon pr_warn("%s: switch to bus width %d failed\n", 1054ed9feec7SWolfram Sang mmc_hostname(host), 1 << bus_width); 1055577fb131SSeungwon Jeon } 1056a4924c71SGirish K S } 1057a4924c71SGirish K S 1058577fb131SSeungwon Jeon return err; 1059577fb131SSeungwon Jeon } 1060577fb131SSeungwon Jeon 1061577fb131SSeungwon Jeon /* 1062577fb131SSeungwon Jeon * Switch to the high-speed mode 1063577fb131SSeungwon Jeon */ 1064577fb131SSeungwon Jeon static int mmc_select_hs(struct mmc_card *card) 1065577fb131SSeungwon Jeon { 1066577fb131SSeungwon Jeon int err; 1067577fb131SSeungwon Jeon 10684509f847SUlf Hansson err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1069577fb131SSeungwon Jeon EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS, 107053e60650SUlf Hansson card->ext_csd.generic_cmd6_time, MMC_TIMING_MMC_HS, 10715e52a168SBean Huo true, true, MMC_CMD_RETRIES); 107267d35960SJungseung Lee if (err) 107367d35960SJungseung Lee pr_warn("%s: switch to high-speed failed, err:%d\n", 107467d35960SJungseung Lee mmc_hostname(card->host), err); 107567d35960SJungseung Lee 1076577fb131SSeungwon Jeon return err; 1077577fb131SSeungwon Jeon } 1078577fb131SSeungwon Jeon 1079577fb131SSeungwon Jeon /* 1080577fb131SSeungwon Jeon * Activate wide bus and DDR if supported. 1081577fb131SSeungwon Jeon */ 1082577fb131SSeungwon Jeon static int mmc_select_hs_ddr(struct mmc_card *card) 1083577fb131SSeungwon Jeon { 1084577fb131SSeungwon Jeon struct mmc_host *host = card->host; 1085577fb131SSeungwon Jeon u32 bus_width, ext_csd_bits; 1086577fb131SSeungwon Jeon int err = 0; 1087577fb131SSeungwon Jeon 1088577fb131SSeungwon Jeon if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52)) 1089577fb131SSeungwon Jeon return 0; 1090577fb131SSeungwon Jeon 1091577fb131SSeungwon Jeon bus_width = host->ios.bus_width; 1092577fb131SSeungwon Jeon if (bus_width == MMC_BUS_WIDTH_1) 1093577fb131SSeungwon Jeon return 0; 1094577fb131SSeungwon Jeon 1095577fb131SSeungwon Jeon ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? 1096577fb131SSeungwon Jeon EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; 1097577fb131SSeungwon Jeon 1098e173f891SUlf Hansson err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1099577fb131SSeungwon Jeon EXT_CSD_BUS_WIDTH, 1100577fb131SSeungwon Jeon ext_csd_bits, 1101e173f891SUlf Hansson card->ext_csd.generic_cmd6_time, 1102e173f891SUlf Hansson MMC_TIMING_MMC_DDR52, 11035e52a168SBean Huo true, true, MMC_CMD_RETRIES); 1104577fb131SSeungwon Jeon if (err) { 11054b75bffcSAndrew Gabbasov pr_err("%s: switch to bus width %d ddr failed\n", 1106577fb131SSeungwon Jeon mmc_hostname(host), 1 << bus_width); 1107577fb131SSeungwon Jeon return err; 1108577fb131SSeungwon Jeon } 1109577fb131SSeungwon Jeon 1110577fb131SSeungwon Jeon /* 1111577fb131SSeungwon Jeon * eMMC cards can support 3.3V to 1.2V i/o (vccq) 1112577fb131SSeungwon Jeon * signaling. 1113577fb131SSeungwon Jeon * 1114577fb131SSeungwon Jeon * EXT_CSD_CARD_TYPE_DDR_1_8V means 3.3V or 1.8V vccq. 1115577fb131SSeungwon Jeon * 1116577fb131SSeungwon Jeon * 1.8V vccq at 3.3V core voltage (vcc) is not required 1117577fb131SSeungwon Jeon * in the JEDEC spec for DDR. 1118577fb131SSeungwon Jeon * 1119312449efSChuanxiao.Dong * Even (e)MMC card can support 3.3v to 1.2v vccq, but not all 1120312449efSChuanxiao.Dong * host controller can support this, like some of the SDHCI 1121312449efSChuanxiao.Dong * controller which connect to an eMMC device. Some of these 1122312449efSChuanxiao.Dong * host controller still needs to use 1.8v vccq for supporting 1123312449efSChuanxiao.Dong * DDR mode. 1124312449efSChuanxiao.Dong * 1125312449efSChuanxiao.Dong * So the sequence will be: 1126312449efSChuanxiao.Dong * if (host and device can both support 1.2v IO) 1127312449efSChuanxiao.Dong * use 1.2v IO; 1128312449efSChuanxiao.Dong * else if (host and device can both support 1.8v IO) 1129312449efSChuanxiao.Dong * use 1.8v IO; 1130312449efSChuanxiao.Dong * so if host and device can only support 3.3v IO, this is the 1131312449efSChuanxiao.Dong * last choice. 1132577fb131SSeungwon Jeon * 1133577fb131SSeungwon Jeon * WARNING: eMMC rules are NOT the same as SD DDR 1134577fb131SSeungwon Jeon */ 113520f921bbSUlf Hansson if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_2V) { 11364e74b6b3SUlf Hansson err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); 113720f921bbSUlf Hansson if (!err) 113820f921bbSUlf Hansson return 0; 113920f921bbSUlf Hansson } 1140577fb131SSeungwon Jeon 114120f921bbSUlf Hansson if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_8V && 114220f921bbSUlf Hansson host->caps & MMC_CAP_1_8V_DDR) 11434e74b6b3SUlf Hansson err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); 1144312449efSChuanxiao.Dong 1145312449efSChuanxiao.Dong /* make sure vccq is 3.3v after switching disaster */ 1146312449efSChuanxiao.Dong if (err) 11474e74b6b3SUlf Hansson err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330); 1148312449efSChuanxiao.Dong 1149577fb131SSeungwon Jeon return err; 1150577fb131SSeungwon Jeon } 1151577fb131SSeungwon Jeon 11520a5b6438SSeungwon Jeon static int mmc_select_hs400(struct mmc_card *card) 11530a5b6438SSeungwon Jeon { 11540a5b6438SSeungwon Jeon struct mmc_host *host = card->host; 115551b12f77SAdrian Hunter unsigned int max_dtr; 11560a5b6438SSeungwon Jeon int err = 0; 1157cc4f414cSAdrian Hunter u8 val; 11580a5b6438SSeungwon Jeon 11590a5b6438SSeungwon Jeon /* 11600a5b6438SSeungwon Jeon * HS400 mode requires 8-bit bus width 11610a5b6438SSeungwon Jeon */ 11620a5b6438SSeungwon Jeon if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 && 11630a5b6438SSeungwon Jeon host->ios.bus_width == MMC_BUS_WIDTH_8)) 11640a5b6438SSeungwon Jeon return 0; 11650a5b6438SSeungwon Jeon 116651b12f77SAdrian Hunter /* Switch card to HS mode */ 1167adb24d42SWenkai Du val = EXT_CSD_TIMING_HS; 11680a5b6438SSeungwon Jeon err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1169cc4f414cSAdrian Hunter EXT_CSD_HS_TIMING, val, 1170aa33ce3cSUlf Hansson card->ext_csd.generic_cmd6_time, 0, 11715e52a168SBean Huo false, true, MMC_CMD_RETRIES); 11720a5b6438SSeungwon Jeon if (err) { 11734b75bffcSAndrew Gabbasov pr_err("%s: switch to high-speed from hs200 failed, err:%d\n", 11740a5b6438SSeungwon Jeon mmc_hostname(host), err); 11750a5b6438SSeungwon Jeon return err; 11760a5b6438SSeungwon Jeon } 11770a5b6438SSeungwon Jeon 1178ba6c7ac3SSimon Horman /* Prepare host to downgrade to HS timing */ 1179ba6c7ac3SSimon Horman if (host->ops->hs400_downgrade) 1180ba6c7ac3SSimon Horman host->ops->hs400_downgrade(host); 1181ba6c7ac3SSimon Horman 118224fdcb37SWolfram Sang /* Set host controller to HS timing */ 1183452f553eSWolfram Sang mmc_set_timing(host, MMC_TIMING_MMC_HS); 118424fdcb37SWolfram Sang 1185649c6059SZiyuan Xu /* Reduce frequency to HS frequency */ 1186649c6059SZiyuan Xu max_dtr = card->ext_csd.hs_max_dtr; 1187649c6059SZiyuan Xu mmc_set_clock(host, max_dtr); 1188649c6059SZiyuan Xu 118960db8a47SUlf Hansson err = mmc_switch_status(card, true); 1190d2302933SAdrian Hunter if (err) 1191d2302933SAdrian Hunter goto out_err; 1192d2302933SAdrian Hunter 1193cc14eec0SYinbo Zhu if (host->ops->hs400_prepare_ddr) 1194cc14eec0SYinbo Zhu host->ops->hs400_prepare_ddr(host); 1195cc14eec0SYinbo Zhu 1196d2302933SAdrian Hunter /* Switch card to DDR */ 11970a5b6438SSeungwon Jeon err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 11980a5b6438SSeungwon Jeon EXT_CSD_BUS_WIDTH, 11990a5b6438SSeungwon Jeon EXT_CSD_DDR_BUS_WIDTH_8, 12000a5b6438SSeungwon Jeon card->ext_csd.generic_cmd6_time); 12010a5b6438SSeungwon Jeon if (err) { 12024b75bffcSAndrew Gabbasov pr_err("%s: switch to bus width for hs400 failed, err:%d\n", 12030a5b6438SSeungwon Jeon mmc_hostname(host), err); 12040a5b6438SSeungwon Jeon return err; 12050a5b6438SSeungwon Jeon } 12060a5b6438SSeungwon Jeon 1207d2302933SAdrian Hunter /* Switch card to HS400 */ 1208cc4f414cSAdrian Hunter val = EXT_CSD_TIMING_HS400 | 1209cc4f414cSAdrian Hunter card->drive_strength << EXT_CSD_DRV_STR_SHIFT; 12100a5b6438SSeungwon Jeon err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1211cc4f414cSAdrian Hunter EXT_CSD_HS_TIMING, val, 1212aa33ce3cSUlf Hansson card->ext_csd.generic_cmd6_time, 0, 12135e52a168SBean Huo false, true, MMC_CMD_RETRIES); 12140a5b6438SSeungwon Jeon if (err) { 12154b75bffcSAndrew Gabbasov pr_err("%s: switch to hs400 failed, err:%d\n", 12160a5b6438SSeungwon Jeon mmc_hostname(host), err); 12170a5b6438SSeungwon Jeon return err; 12180a5b6438SSeungwon Jeon } 12190a5b6438SSeungwon Jeon 1220d2302933SAdrian Hunter /* Set host controller to HS400 timing and frequency */ 12210a5b6438SSeungwon Jeon mmc_set_timing(host, MMC_TIMING_MMC_HS400); 12220a5b6438SSeungwon Jeon mmc_set_bus_speed(card); 12230a5b6438SSeungwon Jeon 1224b0e370b9SWolfram Sang if (host->ops->hs400_complete) 1225b0e370b9SWolfram Sang host->ops->hs400_complete(host); 1226b0e370b9SWolfram Sang 122760db8a47SUlf Hansson err = mmc_switch_status(card, true); 1228d2302933SAdrian Hunter if (err) 1229d2302933SAdrian Hunter goto out_err; 1230d2302933SAdrian Hunter 12310a5b6438SSeungwon Jeon return 0; 1232d2302933SAdrian Hunter 1233d2302933SAdrian Hunter out_err: 1234d2302933SAdrian Hunter pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), 1235d2302933SAdrian Hunter __func__, err); 1236d2302933SAdrian Hunter return err; 12370a5b6438SSeungwon Jeon } 12380a5b6438SSeungwon Jeon 12396376f69dSAdrian Hunter int mmc_hs200_to_hs400(struct mmc_card *card) 12406376f69dSAdrian Hunter { 12416376f69dSAdrian Hunter return mmc_select_hs400(card); 12426376f69dSAdrian Hunter } 12436376f69dSAdrian Hunter 12446376f69dSAdrian Hunter int mmc_hs400_to_hs200(struct mmc_card *card) 12456376f69dSAdrian Hunter { 12466376f69dSAdrian Hunter struct mmc_host *host = card->host; 12476376f69dSAdrian Hunter unsigned int max_dtr; 12486376f69dSAdrian Hunter int err; 1249cc4f414cSAdrian Hunter u8 val; 12506376f69dSAdrian Hunter 12516376f69dSAdrian Hunter /* Reduce frequency to HS */ 12526376f69dSAdrian Hunter max_dtr = card->ext_csd.hs_max_dtr; 12536376f69dSAdrian Hunter mmc_set_clock(host, max_dtr); 12546376f69dSAdrian Hunter 12556376f69dSAdrian Hunter /* Switch HS400 to HS DDR */ 1256adb24d42SWenkai Du val = EXT_CSD_TIMING_HS; 12576376f69dSAdrian Hunter err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, 1258aa33ce3cSUlf Hansson val, card->ext_csd.generic_cmd6_time, 0, 12595e52a168SBean Huo false, true, MMC_CMD_RETRIES); 12606376f69dSAdrian Hunter if (err) 12616376f69dSAdrian Hunter goto out_err; 12626376f69dSAdrian Hunter 126324fdcb37SWolfram Sang if (host->ops->hs400_downgrade) 126424fdcb37SWolfram Sang host->ops->hs400_downgrade(host); 126524fdcb37SWolfram Sang 12666376f69dSAdrian Hunter mmc_set_timing(host, MMC_TIMING_MMC_DDR52); 12676376f69dSAdrian Hunter 126860db8a47SUlf Hansson err = mmc_switch_status(card, true); 12696376f69dSAdrian Hunter if (err) 12706376f69dSAdrian Hunter goto out_err; 12716376f69dSAdrian Hunter 12726376f69dSAdrian Hunter /* Switch HS DDR to HS */ 12736376f69dSAdrian Hunter err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BUS_WIDTH, 12746376f69dSAdrian Hunter EXT_CSD_BUS_WIDTH_8, card->ext_csd.generic_cmd6_time, 12755e52a168SBean Huo 0, false, true, MMC_CMD_RETRIES); 12766376f69dSAdrian Hunter if (err) 12776376f69dSAdrian Hunter goto out_err; 12786376f69dSAdrian Hunter 12796376f69dSAdrian Hunter mmc_set_timing(host, MMC_TIMING_MMC_HS); 12806376f69dSAdrian Hunter 128160db8a47SUlf Hansson err = mmc_switch_status(card, true); 12826376f69dSAdrian Hunter if (err) 12836376f69dSAdrian Hunter goto out_err; 12846376f69dSAdrian Hunter 12856376f69dSAdrian Hunter /* Switch HS to HS200 */ 1286cc4f414cSAdrian Hunter val = EXT_CSD_TIMING_HS200 | 1287cc4f414cSAdrian Hunter card->drive_strength << EXT_CSD_DRV_STR_SHIFT; 12886376f69dSAdrian Hunter err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, 1289aa33ce3cSUlf Hansson val, card->ext_csd.generic_cmd6_time, 0, 12905e52a168SBean Huo false, true, MMC_CMD_RETRIES); 12916376f69dSAdrian Hunter if (err) 12926376f69dSAdrian Hunter goto out_err; 12936376f69dSAdrian Hunter 12946376f69dSAdrian Hunter mmc_set_timing(host, MMC_TIMING_MMC_HS200); 12956376f69dSAdrian Hunter 1296ef3d2322SAdrian Hunter /* 1297ef3d2322SAdrian Hunter * For HS200, CRC errors are not a reliable way to know the switch 1298ef3d2322SAdrian Hunter * failed. If there really is a problem, we would expect tuning will 1299ef3d2322SAdrian Hunter * fail and the result ends up the same. 1300ef3d2322SAdrian Hunter */ 130160db8a47SUlf Hansson err = mmc_switch_status(card, false); 13026376f69dSAdrian Hunter if (err) 13036376f69dSAdrian Hunter goto out_err; 13046376f69dSAdrian Hunter 13056376f69dSAdrian Hunter mmc_set_bus_speed(card); 13066376f69dSAdrian Hunter 1307c8a4e30dSUlf Hansson /* Prepare tuning for HS400 mode. */ 1308c8a4e30dSUlf Hansson if (host->ops->prepare_hs400_tuning) 1309c8a4e30dSUlf Hansson host->ops->prepare_hs400_tuning(host, &host->ios); 1310c8a4e30dSUlf Hansson 13116376f69dSAdrian Hunter return 0; 13126376f69dSAdrian Hunter 13136376f69dSAdrian Hunter out_err: 13146376f69dSAdrian Hunter pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), 13156376f69dSAdrian Hunter __func__, err); 13166376f69dSAdrian Hunter return err; 13176376f69dSAdrian Hunter } 13186376f69dSAdrian Hunter 1319fb458864SChanho Min static void mmc_select_driver_type(struct mmc_card *card) 1320fb458864SChanho Min { 1321be17f1ceSWolfram Sang int card_drv_type, drive_strength, drv_type = 0; 13226186d06cSWolfram Sang int fixed_drv_type = card->host->fixed_drv_type; 1323fb458864SChanho Min 1324fb458864SChanho Min card_drv_type = card->ext_csd.raw_driver_strength | 1325fb458864SChanho Min mmc_driver_type_mask(0); 1326fb458864SChanho Min 13276186d06cSWolfram Sang if (fixed_drv_type >= 0) 13286186d06cSWolfram Sang drive_strength = card_drv_type & mmc_driver_type_mask(fixed_drv_type) 13296186d06cSWolfram Sang ? fixed_drv_type : 0; 13306186d06cSWolfram Sang else 1331fb458864SChanho Min drive_strength = mmc_select_drive_strength(card, 1332fb458864SChanho Min card->ext_csd.hs200_max_dtr, 1333fb458864SChanho Min card_drv_type, &drv_type); 1334fb458864SChanho Min 1335fb458864SChanho Min card->drive_strength = drive_strength; 1336fb458864SChanho Min 1337fb458864SChanho Min if (drv_type) 1338fb458864SChanho Min mmc_set_driver_type(card->host, drv_type); 1339fb458864SChanho Min } 1340fb458864SChanho Min 134181ac2af6SShawn Lin static int mmc_select_hs400es(struct mmc_card *card) 134281ac2af6SShawn Lin { 134381ac2af6SShawn Lin struct mmc_host *host = card->host; 134492ddd959SHaibo Chen int err = -EINVAL; 134581ac2af6SShawn Lin u8 val; 134681ac2af6SShawn Lin 134781ac2af6SShawn Lin if (!(host->caps & MMC_CAP_8_BIT_DATA)) { 134881ac2af6SShawn Lin err = -ENOTSUPP; 134981ac2af6SShawn Lin goto out_err; 135081ac2af6SShawn Lin } 135181ac2af6SShawn Lin 13521720d354SShawn Lin if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400_1_2V) 13534e74b6b3SUlf Hansson err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); 13541720d354SShawn Lin 13551720d354SShawn Lin if (err && card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400_1_8V) 13564e74b6b3SUlf Hansson err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); 13571720d354SShawn Lin 13581720d354SShawn Lin /* If fails try again during next card power cycle */ 13591720d354SShawn Lin if (err) 13601720d354SShawn Lin goto out_err; 13611720d354SShawn Lin 136281ac2af6SShawn Lin err = mmc_select_bus_width(card); 13637f38abf2SHongjie Fang if (err != MMC_BUS_WIDTH_8) { 13647f38abf2SHongjie Fang pr_err("%s: switch to 8bit bus width failed, err:%d\n", 13657f38abf2SHongjie Fang mmc_hostname(host), err); 13667f38abf2SHongjie Fang err = err < 0 ? err : -ENOTSUPP; 136781ac2af6SShawn Lin goto out_err; 13687f38abf2SHongjie Fang } 136981ac2af6SShawn Lin 137081ac2af6SShawn Lin /* Switch card to HS mode */ 137153e60650SUlf Hansson err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 137253e60650SUlf Hansson EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS, 137353e60650SUlf Hansson card->ext_csd.generic_cmd6_time, 0, 13745e52a168SBean Huo false, true, MMC_CMD_RETRIES); 137553e60650SUlf Hansson if (err) { 137653e60650SUlf Hansson pr_err("%s: switch to hs for hs400es failed, err:%d\n", 137753e60650SUlf Hansson mmc_hostname(host), err); 137853e60650SUlf Hansson goto out_err; 137953e60650SUlf Hansson } 138053e60650SUlf Hansson 138153e60650SUlf Hansson mmc_set_timing(host, MMC_TIMING_MMC_HS); 138260db8a47SUlf Hansson err = mmc_switch_status(card, true); 138367d35960SJungseung Lee if (err) 138481ac2af6SShawn Lin goto out_err; 138581ac2af6SShawn Lin 13864f25580fSShawn Lin mmc_set_clock(host, card->ext_csd.hs_max_dtr); 13874f25580fSShawn Lin 138881ac2af6SShawn Lin /* Switch card to DDR with strobe bit */ 138981ac2af6SShawn Lin val = EXT_CSD_DDR_BUS_WIDTH_8 | EXT_CSD_BUS_WIDTH_STROBE; 139081ac2af6SShawn Lin err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 139181ac2af6SShawn Lin EXT_CSD_BUS_WIDTH, 139281ac2af6SShawn Lin val, 139381ac2af6SShawn Lin card->ext_csd.generic_cmd6_time); 139481ac2af6SShawn Lin if (err) { 139581ac2af6SShawn Lin pr_err("%s: switch to bus width for hs400es failed, err:%d\n", 139681ac2af6SShawn Lin mmc_hostname(host), err); 139781ac2af6SShawn Lin goto out_err; 139881ac2af6SShawn Lin } 139981ac2af6SShawn Lin 1400fb458864SChanho Min mmc_select_driver_type(card); 1401fb458864SChanho Min 140281ac2af6SShawn Lin /* Switch card to HS400 */ 140381ac2af6SShawn Lin val = EXT_CSD_TIMING_HS400 | 140481ac2af6SShawn Lin card->drive_strength << EXT_CSD_DRV_STR_SHIFT; 140581ac2af6SShawn Lin err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 140681ac2af6SShawn Lin EXT_CSD_HS_TIMING, val, 1407aa33ce3cSUlf Hansson card->ext_csd.generic_cmd6_time, 0, 14085e52a168SBean Huo false, true, MMC_CMD_RETRIES); 140981ac2af6SShawn Lin if (err) { 141081ac2af6SShawn Lin pr_err("%s: switch to hs400es failed, err:%d\n", 141181ac2af6SShawn Lin mmc_hostname(host), err); 141281ac2af6SShawn Lin goto out_err; 141381ac2af6SShawn Lin } 141481ac2af6SShawn Lin 141581ac2af6SShawn Lin /* Set host controller to HS400 timing and frequency */ 141681ac2af6SShawn Lin mmc_set_timing(host, MMC_TIMING_MMC_HS400); 141781ac2af6SShawn Lin 141881ac2af6SShawn Lin /* Controller enable enhanced strobe function */ 141981ac2af6SShawn Lin host->ios.enhanced_strobe = true; 142081ac2af6SShawn Lin if (host->ops->hs400_enhanced_strobe) 142181ac2af6SShawn Lin host->ops->hs400_enhanced_strobe(host, &host->ios); 142281ac2af6SShawn Lin 142360db8a47SUlf Hansson err = mmc_switch_status(card, true); 142481ac2af6SShawn Lin if (err) 142581ac2af6SShawn Lin goto out_err; 142681ac2af6SShawn Lin 142781ac2af6SShawn Lin return 0; 142881ac2af6SShawn Lin 142981ac2af6SShawn Lin out_err: 143081ac2af6SShawn Lin pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), 143181ac2af6SShawn Lin __func__, err); 143281ac2af6SShawn Lin return err; 143381ac2af6SShawn Lin } 143481ac2af6SShawn Lin 1435577fb131SSeungwon Jeon /* 1436577fb131SSeungwon Jeon * For device supporting HS200 mode, the following sequence 1437577fb131SSeungwon Jeon * should be done before executing the tuning process. 1438577fb131SSeungwon Jeon * 1. set the desired bus width(4-bit or 8-bit, 1-bit is not supported) 1439577fb131SSeungwon Jeon * 2. switch to HS200 mode 1440577fb131SSeungwon Jeon * 3. set the clock to > 52Mhz and <=200MHz 1441577fb131SSeungwon Jeon */ 1442577fb131SSeungwon Jeon static int mmc_select_hs200(struct mmc_card *card) 1443577fb131SSeungwon Jeon { 1444577fb131SSeungwon Jeon struct mmc_host *host = card->host; 1445e51534c8SDong Aisheng unsigned int old_timing, old_signal_voltage; 1446577fb131SSeungwon Jeon int err = -EINVAL; 1447cc4f414cSAdrian Hunter u8 val; 1448577fb131SSeungwon Jeon 1449e51534c8SDong Aisheng old_signal_voltage = host->ios.signal_voltage; 1450577fb131SSeungwon Jeon if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_2V) 14514e74b6b3SUlf Hansson err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); 1452577fb131SSeungwon Jeon 1453577fb131SSeungwon Jeon if (err && card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_8V) 14544e74b6b3SUlf Hansson err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); 1455577fb131SSeungwon Jeon 1456577fb131SSeungwon Jeon /* If fails try again during next card power cycle */ 1457577fb131SSeungwon Jeon if (err) 1458e51534c8SDong Aisheng return err; 1459577fb131SSeungwon Jeon 1460cc4f414cSAdrian Hunter mmc_select_driver_type(card); 1461cc4f414cSAdrian Hunter 1462577fb131SSeungwon Jeon /* 1463577fb131SSeungwon Jeon * Set the bus width(4 or 8) with host's support and 1464577fb131SSeungwon Jeon * switch to HS200 mode if bus width is set successfully. 1465577fb131SSeungwon Jeon */ 1466577fb131SSeungwon Jeon err = mmc_select_bus_width(card); 14678b7be8f2SPeter Griffin if (err > 0) { 1468cc4f414cSAdrian Hunter val = EXT_CSD_TIMING_HS200 | 1469cc4f414cSAdrian Hunter card->drive_strength << EXT_CSD_DRV_STR_SHIFT; 1470577fb131SSeungwon Jeon err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1471cc4f414cSAdrian Hunter EXT_CSD_HS_TIMING, val, 1472aa33ce3cSUlf Hansson card->ext_csd.generic_cmd6_time, 0, 14735e52a168SBean Huo false, true, MMC_CMD_RETRIES); 14741815e61bSAdrian Hunter if (err) 14751815e61bSAdrian Hunter goto err; 14761815e61bSAdrian Hunter old_timing = host->ios.timing; 1477577fb131SSeungwon Jeon mmc_set_timing(host, MMC_TIMING_MMC_HS200); 147808573eafSChaotian Jing 1479ef3d2322SAdrian Hunter /* 1480ef3d2322SAdrian Hunter * For HS200, CRC errors are not a reliable way to know the 1481ef3d2322SAdrian Hunter * switch failed. If there really is a problem, we would expect 1482ef3d2322SAdrian Hunter * tuning will fail and the result ends up the same. 1483ef3d2322SAdrian Hunter */ 148460db8a47SUlf Hansson err = mmc_switch_status(card, false); 1485ef3d2322SAdrian Hunter 14861815e61bSAdrian Hunter /* 14871815e61bSAdrian Hunter * mmc_select_timing() assumes timing has not changed if 14881815e61bSAdrian Hunter * it is a switch error. 14891815e61bSAdrian Hunter */ 14901815e61bSAdrian Hunter if (err == -EBADMSG) 14911815e61bSAdrian Hunter mmc_set_timing(host, old_timing); 14921815e61bSAdrian Hunter } 1493a4924c71SGirish K S err: 1494e51534c8SDong Aisheng if (err) { 1495e51534c8SDong Aisheng /* fall back to the old signal voltage, if fails report error */ 14964e74b6b3SUlf Hansson if (mmc_set_signal_voltage(host, old_signal_voltage)) 1497e51534c8SDong Aisheng err = -EIO; 1498e51534c8SDong Aisheng 14991815e61bSAdrian Hunter pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), 15001815e61bSAdrian Hunter __func__, err); 1501e51534c8SDong Aisheng } 1502a4924c71SGirish K S return err; 1503a4924c71SGirish K S } 1504a4924c71SGirish K S 1505a4924c71SGirish K S /* 150681ac2af6SShawn Lin * Activate High Speed, HS200 or HS400ES mode if supported. 1507577fb131SSeungwon Jeon */ 1508577fb131SSeungwon Jeon static int mmc_select_timing(struct mmc_card *card) 1509577fb131SSeungwon Jeon { 1510577fb131SSeungwon Jeon int err = 0; 1511577fb131SSeungwon Jeon 1512148bcab2SUlf Hansson if (!mmc_can_ext_csd(card)) 1513577fb131SSeungwon Jeon goto bus_speed; 1514577fb131SSeungwon Jeon 151581ac2af6SShawn Lin if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400ES) 151681ac2af6SShawn Lin err = mmc_select_hs400es(card); 151781ac2af6SShawn Lin else if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200) 1518577fb131SSeungwon Jeon err = mmc_select_hs200(card); 1519577fb131SSeungwon Jeon else if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS) 1520577fb131SSeungwon Jeon err = mmc_select_hs(card); 1521577fb131SSeungwon Jeon 1522577fb131SSeungwon Jeon if (err && err != -EBADMSG) 1523577fb131SSeungwon Jeon return err; 1524577fb131SSeungwon Jeon 1525577fb131SSeungwon Jeon bus_speed: 1526577fb131SSeungwon Jeon /* 1527577fb131SSeungwon Jeon * Set the bus speed to the selected bus timing. 1528577fb131SSeungwon Jeon * If timing is not selected, backward compatible is the default. 1529577fb131SSeungwon Jeon */ 1530577fb131SSeungwon Jeon mmc_set_bus_speed(card); 15310400ed0aSDong Aisheng return 0; 1532577fb131SSeungwon Jeon } 1533577fb131SSeungwon Jeon 1534577fb131SSeungwon Jeon /* 1535577fb131SSeungwon Jeon * Execute tuning sequence to seek the proper bus operating 15360a5b6438SSeungwon Jeon * conditions for HS200 and HS400, which sends CMD21 to the device. 1537577fb131SSeungwon Jeon */ 1538577fb131SSeungwon Jeon static int mmc_hs200_tuning(struct mmc_card *card) 1539577fb131SSeungwon Jeon { 1540577fb131SSeungwon Jeon struct mmc_host *host = card->host; 1541577fb131SSeungwon Jeon 15420a5b6438SSeungwon Jeon /* 15430a5b6438SSeungwon Jeon * Timing should be adjusted to the HS400 target 15440a5b6438SSeungwon Jeon * operation frequency for tuning process 15450a5b6438SSeungwon Jeon */ 15460a5b6438SSeungwon Jeon if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 && 15470a5b6438SSeungwon Jeon host->ios.bus_width == MMC_BUS_WIDTH_8) 15480a5b6438SSeungwon Jeon if (host->ops->prepare_hs400_tuning) 15490a5b6438SSeungwon Jeon host->ops->prepare_hs400_tuning(host, &host->ios); 15500a5b6438SSeungwon Jeon 155163e415c6SAdrian Hunter return mmc_execute_tuning(card); 1552577fb131SSeungwon Jeon } 1553577fb131SSeungwon Jeon 1554577fb131SSeungwon Jeon /* 15556abaa0c9SPierre Ossman * Handle the detection and initialisation of a card. 15566abaa0c9SPierre Ossman * 15578769392bSDeepak Saxena * In the case of a resume, "oldcard" will contain the card 15586abaa0c9SPierre Ossman * we're trying to reinitialise. 15597ea239d9SPierre Ossman */ 15608c75deaeSPierre Ossman static int mmc_init_card(struct mmc_host *host, u32 ocr, 15616abaa0c9SPierre Ossman struct mmc_card *oldcard) 15627ea239d9SPierre Ossman { 15637ea239d9SPierre Ossman struct mmc_card *card; 1564577fb131SSeungwon Jeon int err; 15657ea239d9SPierre Ossman u32 cid[4]; 1566b676f039SPhilip Rakity u32 rocr; 15677ea239d9SPierre Ossman 1568d84075c8SPierre Ossman WARN_ON(!host->claimed); 15697ea239d9SPierre Ossman 157044669034SStefan Nilsson XK /* Set correct bus mode for MMC before attempting init */ 157144669034SStefan Nilsson XK if (!mmc_host_is_spi(host)) 157244669034SStefan Nilsson XK mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); 157344669034SStefan Nilsson XK 15747ea239d9SPierre Ossman /* 15757ea239d9SPierre Ossman * Since we're changing the OCR value, we seem to 15767ea239d9SPierre Ossman * need to tell some cards to go back to the idle 15777ea239d9SPierre Ossman * state. We wait 1ms to give cards time to 15787ea239d9SPierre Ossman * respond. 1579c3805467SBalaji T K * mmc_go_idle is needed for eMMC that are asleep 15807ea239d9SPierre Ossman */ 15817ea239d9SPierre Ossman mmc_go_idle(host); 15827ea239d9SPierre Ossman 15837ea239d9SPierre Ossman /* The extra bit indicates that we support high capacity */ 1584b676f039SPhilip Rakity err = mmc_send_op_cond(host, ocr | (1 << 30), &rocr); 158517b0429dSPierre Ossman if (err) 15866abaa0c9SPierre Ossman goto err; 15877ea239d9SPierre Ossman 15887ea239d9SPierre Ossman /* 1589af517150SDavid Brownell * For SPI, enable CRC as appropriate. 1590af517150SDavid Brownell */ 1591af517150SDavid Brownell if (mmc_host_is_spi(host)) { 1592af517150SDavid Brownell err = mmc_spi_set_crc(host, use_spi_crc); 1593af517150SDavid Brownell if (err) 1594af517150SDavid Brownell goto err; 1595af517150SDavid Brownell } 1596af517150SDavid Brownell 1597af517150SDavid Brownell /* 15987ea239d9SPierre Ossman * Fetch CID from card. 15997ea239d9SPierre Ossman */ 1600af517150SDavid Brownell err = mmc_send_cid(host, cid); 160117b0429dSPierre Ossman if (err) 16027ea239d9SPierre Ossman goto err; 16037ea239d9SPierre Ossman 16046abaa0c9SPierre Ossman if (oldcard) { 1605adf66a0dSPierre Ossman if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) { 1606099b6481Shongjiefang pr_debug("%s: Perhaps the card was replaced\n", 1607099b6481Shongjiefang mmc_hostname(host)); 1608adf66a0dSPierre Ossman err = -ENOENT; 16096abaa0c9SPierre Ossman goto err; 1610adf66a0dSPierre Ossman } 16116abaa0c9SPierre Ossman 16126abaa0c9SPierre Ossman card = oldcard; 16136abaa0c9SPierre Ossman } else { 16147ea239d9SPierre Ossman /* 16157ea239d9SPierre Ossman * Allocate card structure. 16167ea239d9SPierre Ossman */ 161751ec92e2SPierre Ossman card = mmc_alloc_card(host, &mmc_type); 1618adf66a0dSPierre Ossman if (IS_ERR(card)) { 1619adf66a0dSPierre Ossman err = PTR_ERR(card); 16207ea239d9SPierre Ossman goto err; 1621adf66a0dSPierre Ossman } 16227ea239d9SPierre Ossman 162369041150SUlf Hansson card->ocr = ocr; 16247ea239d9SPierre Ossman card->type = MMC_TYPE_MMC; 16257ea239d9SPierre Ossman card->rca = 1; 16267ea239d9SPierre Ossman memcpy(card->raw_cid, cid, sizeof(card->raw_cid)); 16276abaa0c9SPierre Ossman } 16287ea239d9SPierre Ossman 16297ea239d9SPierre Ossman /* 1630eac86321SDoug Anderson * Call the optional HC's init_card function to handle quirks. 1631eac86321SDoug Anderson */ 1632eac86321SDoug Anderson if (host->ops->init_card) 1633eac86321SDoug Anderson host->ops->init_card(host, card); 1634eac86321SDoug Anderson 1635eac86321SDoug Anderson /* 1636af517150SDavid Brownell * For native busses: set card RCA and quit open drain mode. 16377ea239d9SPierre Ossman */ 1638af517150SDavid Brownell if (!mmc_host_is_spi(host)) { 16397ea239d9SPierre Ossman err = mmc_set_relative_addr(card); 164017b0429dSPierre Ossman if (err) 16417ea239d9SPierre Ossman goto free_card; 16427ea239d9SPierre Ossman 16437ea239d9SPierre Ossman mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL); 1644af517150SDavid Brownell } 16457ea239d9SPierre Ossman 16466abaa0c9SPierre Ossman if (!oldcard) { 16477ea239d9SPierre Ossman /* 16487ea239d9SPierre Ossman * Fetch CSD from card. 16497ea239d9SPierre Ossman */ 16507ea239d9SPierre Ossman err = mmc_send_csd(card, card->raw_csd); 165117b0429dSPierre Ossman if (err) 16527ea239d9SPierre Ossman goto free_card; 16537ea239d9SPierre Ossman 1654bd766312SPierre Ossman err = mmc_decode_csd(card); 1655adf66a0dSPierre Ossman if (err) 1656bd766312SPierre Ossman goto free_card; 1657bd766312SPierre Ossman err = mmc_decode_cid(card); 1658adf66a0dSPierre Ossman if (err) 1659bd766312SPierre Ossman goto free_card; 16606abaa0c9SPierre Ossman } 16617ea239d9SPierre Ossman 16627ea239d9SPierre Ossman /* 16633d705d14SSascha Hauer * handling only for cards supporting DSR and hosts requesting 16643d705d14SSascha Hauer * DSR configuration 16653d705d14SSascha Hauer */ 16663d705d14SSascha Hauer if (card->csd.dsr_imp && host->dsr_req) 16673d705d14SSascha Hauer mmc_set_dsr(host); 16683d705d14SSascha Hauer 16693d705d14SSascha Hauer /* 167089a73cf5SPierre Ossman * Select card, as all following commands rely on that. 16717ea239d9SPierre Ossman */ 1672af517150SDavid Brownell if (!mmc_host_is_spi(host)) { 16737ea239d9SPierre Ossman err = mmc_select_card(card); 167417b0429dSPierre Ossman if (err) 16757ea239d9SPierre Ossman goto free_card; 1676af517150SDavid Brownell } 16777ea239d9SPierre Ossman 16786abaa0c9SPierre Ossman if (!oldcard) { 1679076ec38aSUlf Hansson /* Read extended CSD. */ 1680076ec38aSUlf Hansson err = mmc_read_ext_csd(card); 168117b0429dSPierre Ossman if (err) 16827ea239d9SPierre Ossman goto free_card; 1683b676f039SPhilip Rakity 168487e88659SMasahiro Yamada /* 168587e88659SMasahiro Yamada * If doing byte addressing, check if required to do sector 1686b676f039SPhilip Rakity * addressing. Handle the case of <2GB cards needing sector 1687b676f039SPhilip Rakity * addressing. See section 8.1 JEDEC Standard JED84-A441; 1688b676f039SPhilip Rakity * ocr register has bit 30 set for sector addressing. 1689b676f039SPhilip Rakity */ 169087e88659SMasahiro Yamada if (rocr & BIT(30)) 1691b676f039SPhilip Rakity mmc_card_set_blockaddr(card); 1692b676f039SPhilip Rakity 1693dfe86cbaSAdrian Hunter /* Erase size depends on CSD and Extended CSD */ 1694dfe86cbaSAdrian Hunter mmc_set_erase_size(card); 16956abaa0c9SPierre Ossman } 16967ea239d9SPierre Ossman 1697d2a47176SUlf Hansson /* Enable ERASE_GRP_DEF. This bit is lost after a reset or power off. */ 1698d2a47176SUlf Hansson if (card->ext_csd.rev >= 3) { 1699709de99dSChuanxiao Dong err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1700b23cf0bdSSeungwon Jeon EXT_CSD_ERASE_GROUP_DEF, 1, 1701b23cf0bdSSeungwon Jeon card->ext_csd.generic_cmd6_time); 1702709de99dSChuanxiao Dong 1703709de99dSChuanxiao Dong if (err && err != -EBADMSG) 1704709de99dSChuanxiao Dong goto free_card; 1705709de99dSChuanxiao Dong 1706709de99dSChuanxiao Dong if (err) { 1707709de99dSChuanxiao Dong /* 1708709de99dSChuanxiao Dong * Just disable enhanced area off & sz 1709709de99dSChuanxiao Dong * will try to enable ERASE_GROUP_DEF 1710709de99dSChuanxiao Dong * during next time reinit 1711709de99dSChuanxiao Dong */ 1712709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset = -EINVAL; 1713709de99dSChuanxiao Dong card->ext_csd.enhanced_area_size = -EINVAL; 1714709de99dSChuanxiao Dong } else { 1715709de99dSChuanxiao Dong card->ext_csd.erase_group_def = 1; 1716709de99dSChuanxiao Dong /* 1717709de99dSChuanxiao Dong * enable ERASE_GRP_DEF successfully. 1718709de99dSChuanxiao Dong * This will affect the erase size, so 1719709de99dSChuanxiao Dong * here need to reset erase size 1720709de99dSChuanxiao Dong */ 1721709de99dSChuanxiao Dong mmc_set_erase_size(card); 1722709de99dSChuanxiao Dong } 1723709de99dSChuanxiao Dong } 1724709de99dSChuanxiao Dong 1725709de99dSChuanxiao Dong /* 172641e2a489SPhilip Rakity * Ensure eMMC user default partition is enabled 172741e2a489SPhilip Rakity */ 1728371a689fSAndrei Warkentin if (card->ext_csd.part_config & EXT_CSD_PART_CONFIG_ACC_MASK) { 1729371a689fSAndrei Warkentin card->ext_csd.part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK; 1730371a689fSAndrei Warkentin err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONFIG, 1731371a689fSAndrei Warkentin card->ext_csd.part_config, 1732371a689fSAndrei Warkentin card->ext_csd.part_time); 1733371a689fSAndrei Warkentin if (err && err != -EBADMSG) 1734371a689fSAndrei Warkentin goto free_card; 173541e2a489SPhilip Rakity } 173641e2a489SPhilip Rakity 173741e2a489SPhilip Rakity /* 173843235679SUlf Hansson * Enable power_off_notification byte in the ext_csd register 1739bec8726aSGirish K S */ 174043235679SUlf Hansson if (card->ext_csd.rev >= 6) { 1741bec8726aSGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1742bec8726aSGirish K S EXT_CSD_POWER_OFF_NOTIFICATION, 1743bec8726aSGirish K S EXT_CSD_POWER_ON, 1744bec8726aSGirish K S card->ext_csd.generic_cmd6_time); 1745bec8726aSGirish K S if (err && err != -EBADMSG) 1746bec8726aSGirish K S goto free_card; 1747bec8726aSGirish K S 174896a85d54SGirish K S /* 174996a85d54SGirish K S * The err can be -EBADMSG or 0, 175096a85d54SGirish K S * so check for success and update the flag 175196a85d54SGirish K S */ 1752bec8726aSGirish K S if (!err) 1753e6c08586SUlf Hansson card->ext_csd.power_off_notification = EXT_CSD_POWER_ON; 175496a85d54SGirish K S } 1755bec8726aSGirish K S 175601904ff7SAvri Altman /* set erase_arg */ 175701904ff7SAvri Altman if (mmc_can_discard(card)) 175801904ff7SAvri Altman card->erase_arg = MMC_DISCARD_ARG; 175901904ff7SAvri Altman else if (mmc_can_trim(card)) 176001904ff7SAvri Altman card->erase_arg = MMC_TRIM_ARG; 176101904ff7SAvri Altman else 176201904ff7SAvri Altman card->erase_arg = MMC_ERASE_ARG; 176301904ff7SAvri Altman 1764bec8726aSGirish K S /* 1765577fb131SSeungwon Jeon * Select timing interface 176689a73cf5SPierre Ossman */ 1767577fb131SSeungwon Jeon err = mmc_select_timing(card); 1768577fb131SSeungwon Jeon if (err) 176989a73cf5SPierre Ossman goto free_card; 177089a73cf5SPierre Ossman 1771a4924c71SGirish K S if (mmc_card_hs200(card)) { 177297a7d87eSWolfram Sang host->doing_init_tune = 1; 177397a7d87eSWolfram Sang 1774577fb131SSeungwon Jeon err = mmc_hs200_tuning(card); 1775878dbe42SWolfram Sang if (!err) 17760a5b6438SSeungwon Jeon err = mmc_select_hs400(card); 177797a7d87eSWolfram Sang 177897a7d87eSWolfram Sang host->doing_init_tune = 0; 1779878dbe42SWolfram Sang 1780878dbe42SWolfram Sang if (err) 1781878dbe42SWolfram Sang goto free_card; 1782878dbe42SWolfram Sang 1783773dc118SGuenter Roeck } else if (!mmc_card_hs400es(card)) { 1784577fb131SSeungwon Jeon /* Select the desired bus width optionally */ 1785577fb131SSeungwon Jeon err = mmc_select_bus_width(card); 17863d4ef329SAnssi Hannula if (err > 0 && mmc_card_hs(card)) { 1787577fb131SSeungwon Jeon err = mmc_select_hs_ddr(card); 1788577fb131SSeungwon Jeon if (err) 17894b75bffcSAndrew Gabbasov goto free_card; 179089a73cf5SPierre Ossman } 1791ef0b27d4SAdrian Hunter } 179289a73cf5SPierre Ossman 1793881d1c25SSeungwon Jeon /* 17942385049dSSeungwon Jeon * Choose the power class with selected bus interface 17952385049dSSeungwon Jeon */ 17962385049dSSeungwon Jeon mmc_select_powerclass(card); 17972385049dSSeungwon Jeon 17982385049dSSeungwon Jeon /* 179952d0974eSSubhash Jadavani * Enable HPI feature (if supported) 180052d0974eSSubhash Jadavani */ 180152d0974eSSubhash Jadavani if (card->ext_csd.hpi) { 180252d0974eSSubhash Jadavani err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 180352d0974eSSubhash Jadavani EXT_CSD_HPI_MGMT, 1, 180452d0974eSSubhash Jadavani card->ext_csd.generic_cmd6_time); 180552d0974eSSubhash Jadavani if (err && err != -EBADMSG) 180652d0974eSSubhash Jadavani goto free_card; 180752d0974eSSubhash Jadavani if (err) { 18086606110dSJoe Perches pr_warn("%s: Enabling HPI failed\n", 180952d0974eSSubhash Jadavani mmc_hostname(card->host)); 1810a0741ba4SUlf Hansson card->ext_csd.hpi_en = 0; 1811a0741ba4SUlf Hansson } else { 181252d0974eSSubhash Jadavani card->ext_csd.hpi_en = 1; 181352d0974eSSubhash Jadavani } 1814a0741ba4SUlf Hansson } 181552d0974eSSubhash Jadavani 181652d0974eSSubhash Jadavani /* 1817e3ae3401SUlf Hansson * If cache size is higher than 0, this indicates the existence of cache 1818e3ae3401SUlf Hansson * and it can be turned on. Note that some eMMCs from Micron has been 1819e3ae3401SUlf Hansson * reported to need ~800 ms timeout, while enabling the cache after 1820e3ae3401SUlf Hansson * sudden power failure tests. Let's extend the timeout to a minimum of 1821e3ae3401SUlf Hansson * DEFAULT_CACHE_EN_TIMEOUT_MS and do it for all cards. 1822881d1c25SSeungwon Jeon */ 1823ba9f39a7SUlf Hansson if (card->ext_csd.cache_size > 0) { 1824e3ae3401SUlf Hansson unsigned int timeout_ms = MIN_CACHE_EN_TIMEOUT_MS; 1825e3ae3401SUlf Hansson 1826e3ae3401SUlf Hansson timeout_ms = max(card->ext_csd.generic_cmd6_time, timeout_ms); 1827881d1c25SSeungwon Jeon err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1828e3ae3401SUlf Hansson EXT_CSD_CACHE_CTRL, 1, timeout_ms); 1829881d1c25SSeungwon Jeon if (err && err != -EBADMSG) 1830881d1c25SSeungwon Jeon goto free_card; 1831881d1c25SSeungwon Jeon 1832881d1c25SSeungwon Jeon /* 1833881d1c25SSeungwon Jeon * Only if no error, cache is turned on successfully. 1834881d1c25SSeungwon Jeon */ 18358bc0678bSSeungwon Jeon if (err) { 18366606110dSJoe Perches pr_warn("%s: Cache is supported, but failed to turn on (%d)\n", 18378bc0678bSSeungwon Jeon mmc_hostname(card->host), err); 18388bc0678bSSeungwon Jeon card->ext_csd.cache_ctrl = 0; 18398bc0678bSSeungwon Jeon } else { 18408bc0678bSSeungwon Jeon card->ext_csd.cache_ctrl = 1; 18418bc0678bSSeungwon Jeon } 1842881d1c25SSeungwon Jeon } 1843881d1c25SSeungwon Jeon 1844abd9ac14SSeungwon Jeon /* 184598d4f780SAdrian Hunter * Enable Command Queue if supported. Note that Packed Commands cannot 184698d4f780SAdrian Hunter * be used with Command Queue. 184798d4f780SAdrian Hunter */ 184898d4f780SAdrian Hunter card->ext_csd.cmdq_en = false; 184998d4f780SAdrian Hunter if (card->ext_csd.cmdq_support && host->caps2 & MMC_CAP2_CQE) { 185098d4f780SAdrian Hunter err = mmc_cmdq_enable(card); 185198d4f780SAdrian Hunter if (err && err != -EBADMSG) 185298d4f780SAdrian Hunter goto free_card; 185398d4f780SAdrian Hunter if (err) { 185498d4f780SAdrian Hunter pr_warn("%s: Enabling CMDQ failed\n", 185598d4f780SAdrian Hunter mmc_hostname(card->host)); 185698d4f780SAdrian Hunter card->ext_csd.cmdq_support = false; 185798d4f780SAdrian Hunter card->ext_csd.cmdq_depth = 0; 185898d4f780SAdrian Hunter } 185998d4f780SAdrian Hunter } 186098d4f780SAdrian Hunter /* 18619d4579a8SAdrian Hunter * In some cases (e.g. RPMB or mmc_test), the Command Queue must be 18629d4579a8SAdrian Hunter * disabled for a time, so a flag is needed to indicate to re-enable the 18639d4579a8SAdrian Hunter * Command Queue. 18649d4579a8SAdrian Hunter */ 18659d4579a8SAdrian Hunter card->reenable_cmdq = card->ext_csd.cmdq_en; 18669d4579a8SAdrian Hunter 1867511ce378SBaolin Wang if (host->cqe_ops && !host->cqe_enabled) { 1868f690f440SAdrian Hunter err = host->cqe_ops->cqe_enable(host, card); 1869511ce378SBaolin Wang if (!err) { 1870f690f440SAdrian Hunter host->cqe_enabled = true; 1871511ce378SBaolin Wang 1872511ce378SBaolin Wang if (card->ext_csd.cmdq_en) { 1873f690f440SAdrian Hunter pr_info("%s: Command Queue Engine enabled\n", 1874f690f440SAdrian Hunter mmc_hostname(host)); 1875511ce378SBaolin Wang } else { 1876511ce378SBaolin Wang host->hsq_enabled = true; 1877511ce378SBaolin Wang pr_info("%s: Host Software Queue enabled\n", 1878511ce378SBaolin Wang mmc_hostname(host)); 1879511ce378SBaolin Wang } 1880f690f440SAdrian Hunter } 1881f690f440SAdrian Hunter } 1882f690f440SAdrian Hunter 1883247cfe53SKyle Roeschley if (host->caps2 & MMC_CAP2_AVOID_3_3V && 1884247cfe53SKyle Roeschley host->ios.signal_voltage == MMC_SIGNAL_VOLTAGE_330) { 1885247cfe53SKyle Roeschley pr_err("%s: Host failed to negotiate down from 3.3V\n", 1886247cfe53SKyle Roeschley mmc_hostname(host)); 1887247cfe53SKyle Roeschley err = -EINVAL; 1888247cfe53SKyle Roeschley goto free_card; 1889247cfe53SKyle Roeschley } 1890247cfe53SKyle Roeschley 18916abaa0c9SPierre Ossman if (!oldcard) 18927ea239d9SPierre Ossman host->card = card; 18937ea239d9SPierre Ossman 189417b0429dSPierre Ossman return 0; 18956abaa0c9SPierre Ossman 18966abaa0c9SPierre Ossman free_card: 18976abaa0c9SPierre Ossman if (!oldcard) 18986abaa0c9SPierre Ossman mmc_remove_card(card); 18996abaa0c9SPierre Ossman err: 1900adf66a0dSPierre Ossman return err; 19016abaa0c9SPierre Ossman } 19026abaa0c9SPierre Ossman 190307a68216SUlf Hansson static int mmc_can_sleep(struct mmc_card *card) 190407a68216SUlf Hansson { 1905783667ccSYue Hu return card->ext_csd.rev >= 3; 190607a68216SUlf Hansson } 190707a68216SUlf Hansson 190807a68216SUlf Hansson static int mmc_sleep(struct mmc_host *host) 190907a68216SUlf Hansson { 1910c7836d15SMasahiro Yamada struct mmc_command cmd = {}; 191107a68216SUlf Hansson struct mmc_card *card = host->card; 1912cb962e04SUlf Hansson unsigned int timeout_ms = DIV_ROUND_UP(card->ext_csd.sa_timeout, 10000); 1913*e62f1e0bSUlf Hansson bool use_r1b_resp; 191407a68216SUlf Hansson int err; 191507a68216SUlf Hansson 1916436f8daaSAdrian Hunter /* Re-tuning can't be done once the card is deselected */ 1917436f8daaSAdrian Hunter mmc_retune_hold(host); 1918436f8daaSAdrian Hunter 191907a68216SUlf Hansson err = mmc_deselect_cards(host); 192007a68216SUlf Hansson if (err) 1921436f8daaSAdrian Hunter goto out_release; 192207a68216SUlf Hansson 192307a68216SUlf Hansson cmd.opcode = MMC_SLEEP_AWAKE; 192407a68216SUlf Hansson cmd.arg = card->rca << 16; 192507a68216SUlf Hansson cmd.arg |= 1 << 15; 1926*e62f1e0bSUlf Hansson use_r1b_resp = mmc_prepare_busy_cmd(host, &cmd, timeout_ms); 1927cb962e04SUlf Hansson 192807a68216SUlf Hansson err = mmc_wait_for_cmd(host, &cmd, 0); 192907a68216SUlf Hansson if (err) 1930436f8daaSAdrian Hunter goto out_release; 193107a68216SUlf Hansson 193207a68216SUlf Hansson /* 193307a68216SUlf Hansson * If the host does not wait while the card signals busy, then we will 193407a68216SUlf Hansson * will have to wait the sleep/awake timeout. Note, we cannot use the 193507a68216SUlf Hansson * SEND_STATUS command to poll the status because that command (and most 193607a68216SUlf Hansson * others) is invalid while the card sleeps. 193707a68216SUlf Hansson */ 1938*e62f1e0bSUlf Hansson if (!use_r1b_resp || !(host->caps & MMC_CAP_WAIT_WHILE_BUSY)) 1939cb962e04SUlf Hansson mmc_delay(timeout_ms); 194007a68216SUlf Hansson 1941436f8daaSAdrian Hunter out_release: 1942436f8daaSAdrian Hunter mmc_retune_release(host); 194307a68216SUlf Hansson return err; 194407a68216SUlf Hansson } 194507a68216SUlf Hansson 1946e6c08586SUlf Hansson static int mmc_can_poweroff_notify(const struct mmc_card *card) 1947e6c08586SUlf Hansson { 1948e6c08586SUlf Hansson return card && 1949e6c08586SUlf Hansson mmc_card_mmc(card) && 1950e6c08586SUlf Hansson (card->ext_csd.power_off_notification == EXT_CSD_POWER_ON); 1951e6c08586SUlf Hansson } 1952e6c08586SUlf Hansson 1953e6c08586SUlf Hansson static int mmc_poweroff_notify(struct mmc_card *card, unsigned int notify_type) 1954e6c08586SUlf Hansson { 1955e6c08586SUlf Hansson unsigned int timeout = card->ext_csd.generic_cmd6_time; 1956e6c08586SUlf Hansson int err; 1957e6c08586SUlf Hansson 1958e6c08586SUlf Hansson /* Use EXT_CSD_POWER_OFF_SHORT as default notification type. */ 1959e6c08586SUlf Hansson if (notify_type == EXT_CSD_POWER_OFF_LONG) 1960e6c08586SUlf Hansson timeout = card->ext_csd.power_off_longtime; 1961e6c08586SUlf Hansson 1962878e200bSUlf Hansson err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1963e6c08586SUlf Hansson EXT_CSD_POWER_OFF_NOTIFICATION, 19645e52a168SBean Huo notify_type, timeout, 0, false, false, MMC_CMD_RETRIES); 1965e6c08586SUlf Hansson if (err) 1966e6c08586SUlf Hansson pr_err("%s: Power Off Notification timed out, %u\n", 1967e6c08586SUlf Hansson mmc_hostname(card->host), timeout); 1968e6c08586SUlf Hansson 1969e6c08586SUlf Hansson /* Disable the power off notification after the switch operation. */ 1970e6c08586SUlf Hansson card->ext_csd.power_off_notification = EXT_CSD_NO_POWER_NOTIFICATION; 1971e6c08586SUlf Hansson 1972e6c08586SUlf Hansson return err; 1973e6c08586SUlf Hansson } 1974e6c08586SUlf Hansson 19756abaa0c9SPierre Ossman /* 19766abaa0c9SPierre Ossman * Host is being removed. Free up the current card. 19776abaa0c9SPierre Ossman */ 19786abaa0c9SPierre Ossman static void mmc_remove(struct mmc_host *host) 19796abaa0c9SPierre Ossman { 19806abaa0c9SPierre Ossman mmc_remove_card(host->card); 19816abaa0c9SPierre Ossman host->card = NULL; 19826abaa0c9SPierre Ossman } 19836abaa0c9SPierre Ossman 19846abaa0c9SPierre Ossman /* 1985d3049504SAdrian Hunter * Card detection - card is alive. 1986d3049504SAdrian Hunter */ 1987d3049504SAdrian Hunter static int mmc_alive(struct mmc_host *host) 1988d3049504SAdrian Hunter { 1989d3049504SAdrian Hunter return mmc_send_status(host->card, NULL); 1990d3049504SAdrian Hunter } 1991d3049504SAdrian Hunter 1992d3049504SAdrian Hunter /* 19936abaa0c9SPierre Ossman * Card detection callback from host. 19946abaa0c9SPierre Ossman */ 19956abaa0c9SPierre Ossman static void mmc_detect(struct mmc_host *host) 19966abaa0c9SPierre Ossman { 19976abaa0c9SPierre Ossman int err; 19986abaa0c9SPierre Ossman 19996c0cedd1SAdrian Hunter mmc_get_card(host->card, NULL); 20006abaa0c9SPierre Ossman 20016abaa0c9SPierre Ossman /* 20026abaa0c9SPierre Ossman * Just check if our card has been removed. 20036abaa0c9SPierre Ossman */ 2004d3049504SAdrian Hunter err = _mmc_detect_card_removed(host); 20056abaa0c9SPierre Ossman 20066c0cedd1SAdrian Hunter mmc_put_card(host->card, NULL); 20077ea239d9SPierre Ossman 200817b0429dSPierre Ossman if (err) { 20094101c16aSPierre Ossman mmc_remove(host); 20106abaa0c9SPierre Ossman 20116abaa0c9SPierre Ossman mmc_claim_host(host); 20126abaa0c9SPierre Ossman mmc_detach_bus(host); 20137f7e4129SUlf Hansson mmc_power_off(host); 20146abaa0c9SPierre Ossman mmc_release_host(host); 20156abaa0c9SPierre Ossman } 20166abaa0c9SPierre Ossman } 20176abaa0c9SPierre Ossman 201897fce126SAvri Altman static bool _mmc_cache_enabled(struct mmc_host *host) 201997fce126SAvri Altman { 202097fce126SAvri Altman return host->card->ext_csd.cache_size > 0 && 202197fce126SAvri Altman host->card->ext_csd.cache_ctrl & 1; 202297fce126SAvri Altman } 202397fce126SAvri Altman 202403d071fcSUlf Hansson static int _mmc_suspend(struct mmc_host *host, bool is_suspend) 20256abaa0c9SPierre Ossman { 2026c3805467SBalaji T K int err = 0; 202703d071fcSUlf Hansson unsigned int notify_type = is_suspend ? EXT_CSD_POWER_OFF_SHORT : 202803d071fcSUlf Hansson EXT_CSD_POWER_OFF_LONG; 2029c3805467SBalaji T K 20306abaa0c9SPierre Ossman mmc_claim_host(host); 2031881d926dSMaya Erez 20329ec775f7SUlf Hansson if (mmc_card_suspended(host->card)) 20339ec775f7SUlf Hansson goto out; 20349ec775f7SUlf Hansson 203510e5d965SUlf Hansson err = mmc_flush_cache(host->card); 2036881d926dSMaya Erez if (err) 2037881d926dSMaya Erez goto out; 2038881d926dSMaya Erez 203943235679SUlf Hansson if (mmc_can_poweroff_notify(host->card) && 2040ec02760bSYoshihiro Shimoda ((host->caps2 & MMC_CAP2_FULL_PWR_CYCLE) || !is_suspend || 2041ec02760bSYoshihiro Shimoda (host->caps2 & MMC_CAP2_FULL_PWR_CYCLE_IN_SUSPEND))) 204203d071fcSUlf Hansson err = mmc_poweroff_notify(host->card, notify_type); 204307a68216SUlf Hansson else if (mmc_can_sleep(host->card)) 204407a68216SUlf Hansson err = mmc_sleep(host); 2045e6c08586SUlf Hansson else if (!mmc_host_is_spi(host)) 204685e727edSJaehoon Chung err = mmc_deselect_cards(host); 204795cdfb72SNicolas Pitre 20489ec775f7SUlf Hansson if (!err) { 204974590263SUlf Hansson mmc_power_off(host); 20509ec775f7SUlf Hansson mmc_card_set_suspended(host->card); 20519ec775f7SUlf Hansson } 2052881d926dSMaya Erez out: 2053881d926dSMaya Erez mmc_release_host(host); 2054c3805467SBalaji T K return err; 20556abaa0c9SPierre Ossman } 20566abaa0c9SPierre Ossman 20576abaa0c9SPierre Ossman /* 20580cb403a2SUlf Hansson * Suspend callback 205903d071fcSUlf Hansson */ 206003d071fcSUlf Hansson static int mmc_suspend(struct mmc_host *host) 206103d071fcSUlf Hansson { 20620cb403a2SUlf Hansson int err; 20630cb403a2SUlf Hansson 20640cb403a2SUlf Hansson err = _mmc_suspend(host, true); 20650cb403a2SUlf Hansson if (!err) { 20660cb403a2SUlf Hansson pm_runtime_disable(&host->card->dev); 20670cb403a2SUlf Hansson pm_runtime_set_suspended(&host->card->dev); 20680cb403a2SUlf Hansson } 20690cb403a2SUlf Hansson 20700cb403a2SUlf Hansson return err; 207103d071fcSUlf Hansson } 207203d071fcSUlf Hansson 207303d071fcSUlf Hansson /* 20746abaa0c9SPierre Ossman * This function tries to determine if the same card is still present 20756abaa0c9SPierre Ossman * and, if so, restore all state to it. 20766abaa0c9SPierre Ossman */ 20770cb403a2SUlf Hansson static int _mmc_resume(struct mmc_host *host) 20786abaa0c9SPierre Ossman { 20799ec775f7SUlf Hansson int err = 0; 20806abaa0c9SPierre Ossman 20816abaa0c9SPierre Ossman mmc_claim_host(host); 20829ec775f7SUlf Hansson 20839ec775f7SUlf Hansson if (!mmc_card_suspended(host->card)) 20849ec775f7SUlf Hansson goto out; 20859ec775f7SUlf Hansson 208669041150SUlf Hansson mmc_power_up(host, host->card->ocr); 208769041150SUlf Hansson err = mmc_init_card(host, host->card->ocr, host->card); 20889ec775f7SUlf Hansson mmc_card_clr_suspended(host->card); 20892986d0bfSPierre Ossman 20909ec775f7SUlf Hansson out: 20919ec775f7SUlf Hansson mmc_release_host(host); 209295cdfb72SNicolas Pitre return err; 20936abaa0c9SPierre Ossman } 20946abaa0c9SPierre Ossman 20959ec775f7SUlf Hansson /* 20969ec775f7SUlf Hansson * Shutdown callback 20979ec775f7SUlf Hansson */ 20989ec775f7SUlf Hansson static int mmc_shutdown(struct mmc_host *host) 20999ec775f7SUlf Hansson { 21009ec775f7SUlf Hansson int err = 0; 21019ec775f7SUlf Hansson 21029ec775f7SUlf Hansson /* 21039ec775f7SUlf Hansson * In a specific case for poweroff notify, we need to resume the card 21049ec775f7SUlf Hansson * before we can shutdown it properly. 21059ec775f7SUlf Hansson */ 21069ec775f7SUlf Hansson if (mmc_can_poweroff_notify(host->card) && 21079ec775f7SUlf Hansson !(host->caps2 & MMC_CAP2_FULL_PWR_CYCLE)) 21080cb403a2SUlf Hansson err = _mmc_resume(host); 21099ec775f7SUlf Hansson 21109ec775f7SUlf Hansson if (!err) 21119ec775f7SUlf Hansson err = _mmc_suspend(host, false); 21129ec775f7SUlf Hansson 21139ec775f7SUlf Hansson return err; 21149ec775f7SUlf Hansson } 2115c4d770d7SUlf Hansson 2116c4d770d7SUlf Hansson /* 21170cb403a2SUlf Hansson * Callback for resume. 21180cb403a2SUlf Hansson */ 21190cb403a2SUlf Hansson static int mmc_resume(struct mmc_host *host) 21200cb403a2SUlf Hansson { 21210cb403a2SUlf Hansson pm_runtime_enable(&host->card->dev); 2122c29536e8SUlf Hansson return 0; 21230cb403a2SUlf Hansson } 21240cb403a2SUlf Hansson 21250cb403a2SUlf Hansson /* 2126c4d770d7SUlf Hansson * Callback for runtime_suspend. 2127c4d770d7SUlf Hansson */ 2128c4d770d7SUlf Hansson static int mmc_runtime_suspend(struct mmc_host *host) 2129c4d770d7SUlf Hansson { 2130c4d770d7SUlf Hansson int err; 2131c4d770d7SUlf Hansson 2132c4d770d7SUlf Hansson if (!(host->caps & MMC_CAP_AGGRESSIVE_PM)) 2133c4d770d7SUlf Hansson return 0; 2134c4d770d7SUlf Hansson 21350cb403a2SUlf Hansson err = _mmc_suspend(host, true); 21360cc81a8cSUlf Hansson if (err) 2137f42cf8d6SMasanari Iida pr_err("%s: error %d doing aggressive suspend\n", 2138c4d770d7SUlf Hansson mmc_hostname(host), err); 2139c4d770d7SUlf Hansson 2140c4d770d7SUlf Hansson return err; 2141c4d770d7SUlf Hansson } 2142c4d770d7SUlf Hansson 2143c4d770d7SUlf Hansson /* 2144c4d770d7SUlf Hansson * Callback for runtime_resume. 2145c4d770d7SUlf Hansson */ 2146c4d770d7SUlf Hansson static int mmc_runtime_resume(struct mmc_host *host) 2147c4d770d7SUlf Hansson { 2148c4d770d7SUlf Hansson int err; 2149c4d770d7SUlf Hansson 21500cb403a2SUlf Hansson err = _mmc_resume(host); 2151520322d9SAdrian Hunter if (err && err != -ENOMEDIUM) 2152c29536e8SUlf Hansson pr_err("%s: error %d doing runtime resume\n", 2153c4d770d7SUlf Hansson mmc_hostname(host), err); 2154c4d770d7SUlf Hansson 2155c4d770d7SUlf Hansson return 0; 2156c4d770d7SUlf Hansson } 2157c4d770d7SUlf Hansson 215888bed3a6SUlf Hansson static int mmc_can_reset(struct mmc_card *card) 2159f855a371SJohan Rudholm { 2160f855a371SJohan Rudholm u8 rst_n_function; 2161f855a371SJohan Rudholm 2162f855a371SJohan Rudholm rst_n_function = card->ext_csd.rst_n_function; 2163f855a371SJohan Rudholm if ((rst_n_function & EXT_CSD_RST_N_EN_MASK) != EXT_CSD_RST_N_ENABLED) 2164f855a371SJohan Rudholm return 0; 2165f855a371SJohan Rudholm return 1; 2166f855a371SJohan Rudholm } 2167f855a371SJohan Rudholm 21683a3db603SUlf Hansson static int _mmc_hw_reset(struct mmc_host *host) 2169f855a371SJohan Rudholm { 2170f855a371SJohan Rudholm struct mmc_card *card = host->card; 2171f855a371SJohan Rudholm 2172437db4c6SAdrian Hunter /* 2173437db4c6SAdrian Hunter * In the case of recovery, we can't expect flushing the cache to work 2174437db4c6SAdrian Hunter * always, but we have a go and ignore errors. 2175437db4c6SAdrian Hunter */ 2176437db4c6SAdrian Hunter mmc_flush_cache(host->card); 2177437db4c6SAdrian Hunter 21784e6c7178SGwendal Grignou if ((host->caps & MMC_CAP_HW_RESET) && host->ops->hw_reset && 21794e6c7178SGwendal Grignou mmc_can_reset(card)) { 21804e6c7178SGwendal Grignou /* If the card accept RST_n signal, send it. */ 2181f855a371SJohan Rudholm mmc_set_clock(host, host->f_init); 2182f855a371SJohan Rudholm host->ops->hw_reset(host); 2183f855a371SJohan Rudholm /* Set initial state and call mmc_set_ios */ 2184f855a371SJohan Rudholm mmc_set_initial_state(host); 21854e6c7178SGwendal Grignou } else { 21864e6c7178SGwendal Grignou /* Do a brute force power cycle */ 21874e6c7178SGwendal Grignou mmc_power_cycle(host, card->ocr); 218852c8212dSUlf Hansson mmc_pwrseq_reset(host); 21894e6c7178SGwendal Grignou } 2190364549ddSUlf Hansson return mmc_init_card(host, card->ocr, card); 2191f855a371SJohan Rudholm } 2192f855a371SJohan Rudholm 21939feae246SAdrian Hunter static const struct mmc_bus_ops mmc_ops = { 21949feae246SAdrian Hunter .remove = mmc_remove, 21959feae246SAdrian Hunter .detect = mmc_detect, 21969feae246SAdrian Hunter .suspend = mmc_suspend, 21979feae246SAdrian Hunter .resume = mmc_resume, 2198c4d770d7SUlf Hansson .runtime_suspend = mmc_runtime_suspend, 2199c4d770d7SUlf Hansson .runtime_resume = mmc_runtime_resume, 2200d3049504SAdrian Hunter .alive = mmc_alive, 2201486fdbbcSUlf Hansson .shutdown = mmc_shutdown, 22023a3db603SUlf Hansson .hw_reset = _mmc_hw_reset, 220397fce126SAvri Altman .cache_enabled = _mmc_cache_enabled, 22049feae246SAdrian Hunter }; 22059feae246SAdrian Hunter 22066abaa0c9SPierre Ossman /* 22076abaa0c9SPierre Ossman * Starting point for MMC card init. 22086abaa0c9SPierre Ossman */ 2209807e8e40SAndy Ross int mmc_attach_mmc(struct mmc_host *host) 22106abaa0c9SPierre Ossman { 22116abaa0c9SPierre Ossman int err; 221269041150SUlf Hansson u32 ocr, rocr; 22136abaa0c9SPierre Ossman 2214d84075c8SPierre Ossman WARN_ON(!host->claimed); 22156abaa0c9SPierre Ossman 221644669034SStefan Nilsson XK /* Set correct bus mode for MMC before attempting attach */ 221744669034SStefan Nilsson XK if (!mmc_host_is_spi(host)) 221844669034SStefan Nilsson XK mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); 221944669034SStefan Nilsson XK 2220807e8e40SAndy Ross err = mmc_send_op_cond(host, 0, &ocr); 2221807e8e40SAndy Ross if (err) 2222807e8e40SAndy Ross return err; 2223807e8e40SAndy Ross 22242501c917SUlf Hansson mmc_attach_bus(host, &mmc_ops); 22258f230f45STakashi Iwai if (host->ocr_avail_mmc) 22268f230f45STakashi Iwai host->ocr_avail = host->ocr_avail_mmc; 22276abaa0c9SPierre Ossman 22286abaa0c9SPierre Ossman /* 2229af517150SDavid Brownell * We need to get OCR a different way for SPI. 2230af517150SDavid Brownell */ 2231af517150SDavid Brownell if (mmc_host_is_spi(host)) { 2232af517150SDavid Brownell err = mmc_spi_read_ocr(host, 1, &ocr); 2233af517150SDavid Brownell if (err) 2234af517150SDavid Brownell goto err; 2235af517150SDavid Brownell } 2236af517150SDavid Brownell 223769041150SUlf Hansson rocr = mmc_select_voltage(host, ocr); 22386abaa0c9SPierre Ossman 22396abaa0c9SPierre Ossman /* 22406abaa0c9SPierre Ossman * Can we support the voltage of the card? 22416abaa0c9SPierre Ossman */ 224269041150SUlf Hansson if (!rocr) { 2243109b5bedSPierre Ossman err = -EINVAL; 22446abaa0c9SPierre Ossman goto err; 2245109b5bedSPierre Ossman } 22466abaa0c9SPierre Ossman 22476abaa0c9SPierre Ossman /* 22486abaa0c9SPierre Ossman * Detect and init the card. 22496abaa0c9SPierre Ossman */ 225069041150SUlf Hansson err = mmc_init_card(host, rocr, NULL); 225117b0429dSPierre Ossman if (err) 22526abaa0c9SPierre Ossman goto err; 22536abaa0c9SPierre Ossman 22546abaa0c9SPierre Ossman mmc_release_host(host); 22554101c16aSPierre Ossman err = mmc_add_card(host->card); 22567ea239d9SPierre Ossman if (err) 22572986d0bfSPierre Ossman goto remove_card; 22587ea239d9SPierre Ossman 22592860d060SSergei Shtylyov mmc_claim_host(host); 22607ea239d9SPierre Ossman return 0; 22617ea239d9SPierre Ossman 22622986d0bfSPierre Ossman remove_card: 22636abaa0c9SPierre Ossman mmc_remove_card(host->card); 22642986d0bfSPierre Ossman mmc_claim_host(host); 2265807e8e40SAndy Ross host->card = NULL; 22667ea239d9SPierre Ossman err: 22677ea239d9SPierre Ossman mmc_detach_bus(host); 22687ea239d9SPierre Ossman 2269a3c76eb9SGirish K S pr_err("%s: error %d whilst initialising MMC card\n", 2270109b5bedSPierre Ossman mmc_hostname(host), err); 2271109b5bedSPierre Ossman 2272adf66a0dSPierre Ossman return err; 22737ea239d9SPierre Ossman } 2274