17ea239d9SPierre Ossman /* 270f10482SPierre Ossman * linux/drivers/mmc/core/mmc.c 37ea239d9SPierre Ossman * 47ea239d9SPierre Ossman * Copyright (C) 2003-2004 Russell King, All Rights Reserved. 57ea239d9SPierre Ossman * Copyright (C) 2005-2007 Pierre Ossman, All Rights Reserved. 67ea239d9SPierre Ossman * MMCv4 support Copyright (C) 2006 Philip Langdale, All Rights Reserved. 77ea239d9SPierre Ossman * 87ea239d9SPierre Ossman * This program is free software; you can redistribute it and/or modify 97ea239d9SPierre Ossman * it under the terms of the GNU General Public License version 2 as 107ea239d9SPierre Ossman * published by the Free Software Foundation. 117ea239d9SPierre Ossman */ 127ea239d9SPierre Ossman 137ea239d9SPierre Ossman #include <linux/err.h> 145a0e3ad6STejun Heo #include <linux/slab.h> 150205a904SPaul Gortmaker #include <linux/stat.h> 160cb403a2SUlf Hansson #include <linux/pm_runtime.h> 177ea239d9SPierre Ossman 187ea239d9SPierre Ossman #include <linux/mmc/host.h> 197ea239d9SPierre Ossman #include <linux/mmc/card.h> 207ea239d9SPierre Ossman #include <linux/mmc/mmc.h> 217ea239d9SPierre Ossman 227ea239d9SPierre Ossman #include "core.h" 234101c16aSPierre Ossman #include "bus.h" 247ea239d9SPierre Ossman #include "mmc_ops.h" 254c4cb171SPhilip Rakity #include "sd_ops.h" 267ea239d9SPierre Ossman 277ea239d9SPierre Ossman static const unsigned int tran_exp[] = { 287ea239d9SPierre Ossman 10000, 100000, 1000000, 10000000, 297ea239d9SPierre Ossman 0, 0, 0, 0 307ea239d9SPierre Ossman }; 317ea239d9SPierre Ossman 327ea239d9SPierre Ossman static const unsigned char tran_mant[] = { 337ea239d9SPierre Ossman 0, 10, 12, 13, 15, 20, 25, 30, 347ea239d9SPierre Ossman 35, 40, 45, 50, 55, 60, 70, 80, 357ea239d9SPierre Ossman }; 367ea239d9SPierre Ossman 377ea239d9SPierre Ossman static const unsigned int tacc_exp[] = { 387ea239d9SPierre Ossman 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, 397ea239d9SPierre Ossman }; 407ea239d9SPierre Ossman 417ea239d9SPierre Ossman static const unsigned int tacc_mant[] = { 427ea239d9SPierre Ossman 0, 10, 12, 13, 15, 20, 25, 30, 437ea239d9SPierre Ossman 35, 40, 45, 50, 55, 60, 70, 80, 447ea239d9SPierre Ossman }; 457ea239d9SPierre Ossman 467ea239d9SPierre Ossman #define UNSTUFF_BITS(resp,start,size) \ 477ea239d9SPierre Ossman ({ \ 487ea239d9SPierre Ossman const int __size = size; \ 497ea239d9SPierre Ossman const u32 __mask = (__size < 32 ? 1 << __size : 0) - 1; \ 507ea239d9SPierre Ossman const int __off = 3 - ((start) / 32); \ 517ea239d9SPierre Ossman const int __shft = (start) & 31; \ 527ea239d9SPierre Ossman u32 __res; \ 537ea239d9SPierre Ossman \ 547ea239d9SPierre Ossman __res = resp[__off] >> __shft; \ 557ea239d9SPierre Ossman if (__size + __shft > 32) \ 567ea239d9SPierre Ossman __res |= resp[__off-1] << ((32 - __shft) % 32); \ 577ea239d9SPierre Ossman __res & __mask; \ 587ea239d9SPierre Ossman }) 597ea239d9SPierre Ossman 607ea239d9SPierre Ossman /* 617ea239d9SPierre Ossman * Given the decoded CSD structure, decode the raw CID to our CID structure. 627ea239d9SPierre Ossman */ 63bd766312SPierre Ossman static int mmc_decode_cid(struct mmc_card *card) 647ea239d9SPierre Ossman { 657ea239d9SPierre Ossman u32 *resp = card->raw_cid; 667ea239d9SPierre Ossman 677ea239d9SPierre Ossman /* 687ea239d9SPierre Ossman * The selection of the format here is based upon published 697ea239d9SPierre Ossman * specs from sandisk and from what people have reported. 707ea239d9SPierre Ossman */ 717ea239d9SPierre Ossman switch (card->csd.mmca_vsn) { 727ea239d9SPierre Ossman case 0: /* MMC v1.0 - v1.2 */ 737ea239d9SPierre Ossman case 1: /* MMC v1.4 */ 747ea239d9SPierre Ossman card->cid.manfid = UNSTUFF_BITS(resp, 104, 24); 757ea239d9SPierre Ossman card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); 767ea239d9SPierre Ossman card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); 777ea239d9SPierre Ossman card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); 787ea239d9SPierre Ossman card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); 797ea239d9SPierre Ossman card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); 807ea239d9SPierre Ossman card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); 817ea239d9SPierre Ossman card->cid.prod_name[6] = UNSTUFF_BITS(resp, 48, 8); 827ea239d9SPierre Ossman card->cid.hwrev = UNSTUFF_BITS(resp, 44, 4); 837ea239d9SPierre Ossman card->cid.fwrev = UNSTUFF_BITS(resp, 40, 4); 847ea239d9SPierre Ossman card->cid.serial = UNSTUFF_BITS(resp, 16, 24); 857ea239d9SPierre Ossman card->cid.month = UNSTUFF_BITS(resp, 12, 4); 867ea239d9SPierre Ossman card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; 877ea239d9SPierre Ossman break; 887ea239d9SPierre Ossman 897ea239d9SPierre Ossman case 2: /* MMC v2.0 - v2.2 */ 907ea239d9SPierre Ossman case 3: /* MMC v3.1 - v3.3 */ 917ea239d9SPierre Ossman case 4: /* MMC v4 */ 927ea239d9SPierre Ossman card->cid.manfid = UNSTUFF_BITS(resp, 120, 8); 937ea239d9SPierre Ossman card->cid.oemid = UNSTUFF_BITS(resp, 104, 16); 947ea239d9SPierre Ossman card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); 957ea239d9SPierre Ossman card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); 967ea239d9SPierre Ossman card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); 977ea239d9SPierre Ossman card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); 987ea239d9SPierre Ossman card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); 997ea239d9SPierre Ossman card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); 10051e7e8b6SBernie Thompson card->cid.prv = UNSTUFF_BITS(resp, 48, 8); 1017ea239d9SPierre Ossman card->cid.serial = UNSTUFF_BITS(resp, 16, 32); 1027ea239d9SPierre Ossman card->cid.month = UNSTUFF_BITS(resp, 12, 4); 1037ea239d9SPierre Ossman card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; 1047ea239d9SPierre Ossman break; 1057ea239d9SPierre Ossman 1067ea239d9SPierre Ossman default: 107a3c76eb9SGirish K S pr_err("%s: card has unknown MMCA version %d\n", 1087ea239d9SPierre Ossman mmc_hostname(card->host), card->csd.mmca_vsn); 109bd766312SPierre Ossman return -EINVAL; 1107ea239d9SPierre Ossman } 111bd766312SPierre Ossman 112bd766312SPierre Ossman return 0; 1137ea239d9SPierre Ossman } 1147ea239d9SPierre Ossman 115dfe86cbaSAdrian Hunter static void mmc_set_erase_size(struct mmc_card *card) 116dfe86cbaSAdrian Hunter { 117dfe86cbaSAdrian Hunter if (card->ext_csd.erase_group_def & 1) 118dfe86cbaSAdrian Hunter card->erase_size = card->ext_csd.hc_erase_size; 119dfe86cbaSAdrian Hunter else 120dfe86cbaSAdrian Hunter card->erase_size = card->csd.erase_size; 121dfe86cbaSAdrian Hunter 122dfe86cbaSAdrian Hunter mmc_init_erase(card); 123dfe86cbaSAdrian Hunter } 124dfe86cbaSAdrian Hunter 1257ea239d9SPierre Ossman /* 1267ea239d9SPierre Ossman * Given a 128-bit response, decode to our card CSD structure. 1277ea239d9SPierre Ossman */ 128bd766312SPierre Ossman static int mmc_decode_csd(struct mmc_card *card) 1297ea239d9SPierre Ossman { 1307ea239d9SPierre Ossman struct mmc_csd *csd = &card->csd; 131dfe86cbaSAdrian Hunter unsigned int e, m, a, b; 1327ea239d9SPierre Ossman u32 *resp = card->raw_csd; 1337ea239d9SPierre Ossman 1347ea239d9SPierre Ossman /* 1357ea239d9SPierre Ossman * We only understand CSD structure v1.1 and v1.2. 1367ea239d9SPierre Ossman * v1.2 has extra information in bits 15, 11 and 10. 1376da24b78SKyungmin Park * We also support eMMC v4.4 & v4.41. 1387ea239d9SPierre Ossman */ 1396da24b78SKyungmin Park csd->structure = UNSTUFF_BITS(resp, 126, 2); 1406da24b78SKyungmin Park if (csd->structure == 0) { 141a3c76eb9SGirish K S pr_err("%s: unrecognised CSD structure version %d\n", 1426da24b78SKyungmin Park mmc_hostname(card->host), csd->structure); 143bd766312SPierre Ossman return -EINVAL; 1447ea239d9SPierre Ossman } 1457ea239d9SPierre Ossman 1467ea239d9SPierre Ossman csd->mmca_vsn = UNSTUFF_BITS(resp, 122, 4); 1477ea239d9SPierre Ossman m = UNSTUFF_BITS(resp, 115, 4); 1487ea239d9SPierre Ossman e = UNSTUFF_BITS(resp, 112, 3); 1497ea239d9SPierre Ossman csd->tacc_ns = (tacc_exp[e] * tacc_mant[m] + 9) / 10; 1507ea239d9SPierre Ossman csd->tacc_clks = UNSTUFF_BITS(resp, 104, 8) * 100; 1517ea239d9SPierre Ossman 1527ea239d9SPierre Ossman m = UNSTUFF_BITS(resp, 99, 4); 1537ea239d9SPierre Ossman e = UNSTUFF_BITS(resp, 96, 3); 1547ea239d9SPierre Ossman csd->max_dtr = tran_exp[e] * tran_mant[m]; 1557ea239d9SPierre Ossman csd->cmdclass = UNSTUFF_BITS(resp, 84, 12); 1567ea239d9SPierre Ossman 1577ea239d9SPierre Ossman e = UNSTUFF_BITS(resp, 47, 3); 1587ea239d9SPierre Ossman m = UNSTUFF_BITS(resp, 62, 12); 1597ea239d9SPierre Ossman csd->capacity = (1 + m) << (e + 2); 1607ea239d9SPierre Ossman 1617ea239d9SPierre Ossman csd->read_blkbits = UNSTUFF_BITS(resp, 80, 4); 1627ea239d9SPierre Ossman csd->read_partial = UNSTUFF_BITS(resp, 79, 1); 1637ea239d9SPierre Ossman csd->write_misalign = UNSTUFF_BITS(resp, 78, 1); 1647ea239d9SPierre Ossman csd->read_misalign = UNSTUFF_BITS(resp, 77, 1); 1653d705d14SSascha Hauer csd->dsr_imp = UNSTUFF_BITS(resp, 76, 1); 1667ea239d9SPierre Ossman csd->r2w_factor = UNSTUFF_BITS(resp, 26, 3); 1677ea239d9SPierre Ossman csd->write_blkbits = UNSTUFF_BITS(resp, 22, 4); 1687ea239d9SPierre Ossman csd->write_partial = UNSTUFF_BITS(resp, 21, 1); 169bd766312SPierre Ossman 170dfe86cbaSAdrian Hunter if (csd->write_blkbits >= 9) { 171dfe86cbaSAdrian Hunter a = UNSTUFF_BITS(resp, 42, 5); 172dfe86cbaSAdrian Hunter b = UNSTUFF_BITS(resp, 37, 5); 173dfe86cbaSAdrian Hunter csd->erase_size = (a + 1) * (b + 1); 174dfe86cbaSAdrian Hunter csd->erase_size <<= csd->write_blkbits - 9; 175dfe86cbaSAdrian Hunter } 176dfe86cbaSAdrian Hunter 177bd766312SPierre Ossman return 0; 1787ea239d9SPierre Ossman } 1797ea239d9SPierre Ossman 1807ea239d9SPierre Ossman /* 18108ee80ccSPhilip Rakity * Read extended CSD. 1827ea239d9SPierre Ossman */ 18308ee80ccSPhilip Rakity static int mmc_get_ext_csd(struct mmc_card *card, u8 **new_ext_csd) 1847ea239d9SPierre Ossman { 1857ea239d9SPierre Ossman int err; 1867ea239d9SPierre Ossman u8 *ext_csd; 1877ea239d9SPierre Ossman 1887ea239d9SPierre Ossman BUG_ON(!card); 18908ee80ccSPhilip Rakity BUG_ON(!new_ext_csd); 19008ee80ccSPhilip Rakity 19108ee80ccSPhilip Rakity *new_ext_csd = NULL; 1927ea239d9SPierre Ossman 1937ea239d9SPierre Ossman if (card->csd.mmca_vsn < CSD_SPEC_VER_4) 19417b0429dSPierre Ossman return 0; 1957ea239d9SPierre Ossman 1967ea239d9SPierre Ossman /* 1977ea239d9SPierre Ossman * As the ext_csd is so large and mostly unused, we don't store the 1987ea239d9SPierre Ossman * raw block in mmc_card. 1997ea239d9SPierre Ossman */ 2007ea239d9SPierre Ossman ext_csd = kmalloc(512, GFP_KERNEL); 2017ea239d9SPierre Ossman if (!ext_csd) { 202a3c76eb9SGirish K S pr_err("%s: could not allocate a buffer to " 203adf66a0dSPierre Ossman "receive the ext_csd.\n", mmc_hostname(card->host)); 20417b0429dSPierre Ossman return -ENOMEM; 2057ea239d9SPierre Ossman } 2067ea239d9SPierre Ossman 2077ea239d9SPierre Ossman err = mmc_send_ext_csd(card, ext_csd); 20817b0429dSPierre Ossman if (err) { 20908ee80ccSPhilip Rakity kfree(ext_csd); 21008ee80ccSPhilip Rakity *new_ext_csd = NULL; 21108ee80ccSPhilip Rakity 212d08ebeddSWolfgang Muees /* If the host or the card can't do the switch, 213d08ebeddSWolfgang Muees * fail more gracefully. */ 214d08ebeddSWolfgang Muees if ((err != -EINVAL) 215d08ebeddSWolfgang Muees && (err != -ENOSYS) 216d08ebeddSWolfgang Muees && (err != -EFAULT)) 21708ee80ccSPhilip Rakity return err; 218adf66a0dSPierre Ossman 219adf66a0dSPierre Ossman /* 2207ea239d9SPierre Ossman * High capacity cards should have this "magic" size 2217ea239d9SPierre Ossman * stored in their CSD. 2227ea239d9SPierre Ossman */ 2237ea239d9SPierre Ossman if (card->csd.capacity == (4096 * 512)) { 224a3c76eb9SGirish K S pr_err("%s: unable to read EXT_CSD " 2257ea239d9SPierre Ossman "on a possible high capacity card. " 2267ea239d9SPierre Ossman "Card will be ignored.\n", 2277ea239d9SPierre Ossman mmc_hostname(card->host)); 2287ea239d9SPierre Ossman } else { 229a3c76eb9SGirish K S pr_warning("%s: unable to read " 2307ea239d9SPierre Ossman "EXT_CSD, performance might " 2317ea239d9SPierre Ossman "suffer.\n", 2327ea239d9SPierre Ossman mmc_hostname(card->host)); 23317b0429dSPierre Ossman err = 0; 2347ea239d9SPierre Ossman } 23508ee80ccSPhilip Rakity } else 23608ee80ccSPhilip Rakity *new_ext_csd = ext_csd; 237adf66a0dSPierre Ossman 23808ee80ccSPhilip Rakity return err; 2397ea239d9SPierre Ossman } 2407ea239d9SPierre Ossman 24196cf5f02SSeungwon Jeon static void mmc_select_card_type(struct mmc_card *card) 24296cf5f02SSeungwon Jeon { 24396cf5f02SSeungwon Jeon struct mmc_host *host = card->host; 2440a5b6438SSeungwon Jeon u8 card_type = card->ext_csd.raw_card_type; 2455f1a4dd0SLee Jones u32 caps = host->caps, caps2 = host->caps2; 246577fb131SSeungwon Jeon unsigned int hs_max_dtr = 0, hs200_max_dtr = 0; 2472415c0efSSeungwon Jeon unsigned int avail_type = 0; 24896cf5f02SSeungwon Jeon 24996cf5f02SSeungwon Jeon if (caps & MMC_CAP_MMC_HIGHSPEED && 2502415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS_26) { 2512415c0efSSeungwon Jeon hs_max_dtr = MMC_HIGH_26_MAX_DTR; 2522415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS_26; 2532415c0efSSeungwon Jeon } 2542415c0efSSeungwon Jeon 2552415c0efSSeungwon Jeon if (caps & MMC_CAP_MMC_HIGHSPEED && 2562415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS_52) { 25796cf5f02SSeungwon Jeon hs_max_dtr = MMC_HIGH_52_MAX_DTR; 2582415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS_52; 2592415c0efSSeungwon Jeon } 26096cf5f02SSeungwon Jeon 2612415c0efSSeungwon Jeon if (caps & MMC_CAP_1_8V_DDR && 2622415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_DDR_1_8V) { 26396cf5f02SSeungwon Jeon hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; 2642415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_DDR_1_8V; 2652415c0efSSeungwon Jeon } 26696cf5f02SSeungwon Jeon 2672415c0efSSeungwon Jeon if (caps & MMC_CAP_1_2V_DDR && 2682415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_DDR_1_2V) { 2692415c0efSSeungwon Jeon hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; 2702415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_DDR_1_2V; 2712415c0efSSeungwon Jeon } 2722415c0efSSeungwon Jeon 2732415c0efSSeungwon Jeon if (caps2 & MMC_CAP2_HS200_1_8V_SDR && 2742415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS200_1_8V) { 275577fb131SSeungwon Jeon hs200_max_dtr = MMC_HS200_MAX_DTR; 2762415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS200_1_8V; 2772415c0efSSeungwon Jeon } 2782415c0efSSeungwon Jeon 2792415c0efSSeungwon Jeon if (caps2 & MMC_CAP2_HS200_1_2V_SDR && 2802415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS200_1_2V) { 281577fb131SSeungwon Jeon hs200_max_dtr = MMC_HS200_MAX_DTR; 2822415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS200_1_2V; 2832415c0efSSeungwon Jeon } 28496cf5f02SSeungwon Jeon 2850a5b6438SSeungwon Jeon if (caps2 & MMC_CAP2_HS400_1_8V && 2860a5b6438SSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS400_1_8V) { 2870a5b6438SSeungwon Jeon hs200_max_dtr = MMC_HS200_MAX_DTR; 2880a5b6438SSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS400_1_8V; 2890a5b6438SSeungwon Jeon } 2900a5b6438SSeungwon Jeon 2910a5b6438SSeungwon Jeon if (caps2 & MMC_CAP2_HS400_1_2V && 2920a5b6438SSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS400_1_2V) { 2930a5b6438SSeungwon Jeon hs200_max_dtr = MMC_HS200_MAX_DTR; 2940a5b6438SSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS400_1_2V; 2950a5b6438SSeungwon Jeon } 2960a5b6438SSeungwon Jeon 29796cf5f02SSeungwon Jeon card->ext_csd.hs_max_dtr = hs_max_dtr; 298577fb131SSeungwon Jeon card->ext_csd.hs200_max_dtr = hs200_max_dtr; 2992415c0efSSeungwon Jeon card->mmc_avail_type = avail_type; 30096cf5f02SSeungwon Jeon } 30196cf5f02SSeungwon Jeon 302b4493eeaSGrégory Soutadé static void mmc_manage_enhanced_area(struct mmc_card *card, u8 *ext_csd) 303b4493eeaSGrégory Soutadé { 304b4493eeaSGrégory Soutadé u8 hc_erase_grp_sz = 0, hc_wp_grp_sz = 0; 305b4493eeaSGrégory Soutadé 306b4493eeaSGrégory Soutadé /* 307b4493eeaSGrégory Soutadé * Enhanced area feature support -- check whether the eMMC 308b4493eeaSGrégory Soutadé * card has the Enhanced area enabled. If so, export enhanced 309b4493eeaSGrégory Soutadé * area offset and size to user by adding sysfs interface. 310b4493eeaSGrégory Soutadé */ 311b4493eeaSGrégory Soutadé if ((ext_csd[EXT_CSD_PARTITION_SUPPORT] & 0x2) && 312b4493eeaSGrégory Soutadé (ext_csd[EXT_CSD_PARTITION_ATTRIBUTE] & 0x1)) { 313b4493eeaSGrégory Soutadé hc_erase_grp_sz = 314b4493eeaSGrégory Soutadé ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 315b4493eeaSGrégory Soutadé hc_wp_grp_sz = 316b4493eeaSGrégory Soutadé ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 317b4493eeaSGrégory Soutadé 318b4493eeaSGrégory Soutadé card->ext_csd.enhanced_area_en = 1; 319b4493eeaSGrégory Soutadé /* 320b4493eeaSGrégory Soutadé * calculate the enhanced data area offset, in bytes 321b4493eeaSGrégory Soutadé */ 322b4493eeaSGrégory Soutadé card->ext_csd.enhanced_area_offset = 323b4493eeaSGrégory Soutadé (ext_csd[139] << 24) + (ext_csd[138] << 16) + 324b4493eeaSGrégory Soutadé (ext_csd[137] << 8) + ext_csd[136]; 325b4493eeaSGrégory Soutadé if (mmc_card_blockaddr(card)) 326b4493eeaSGrégory Soutadé card->ext_csd.enhanced_area_offset <<= 9; 327b4493eeaSGrégory Soutadé /* 328b4493eeaSGrégory Soutadé * calculate the enhanced data area size, in kilobytes 329b4493eeaSGrégory Soutadé */ 330b4493eeaSGrégory Soutadé card->ext_csd.enhanced_area_size = 331b4493eeaSGrégory Soutadé (ext_csd[142] << 16) + (ext_csd[141] << 8) + 332b4493eeaSGrégory Soutadé ext_csd[140]; 333b4493eeaSGrégory Soutadé card->ext_csd.enhanced_area_size *= 334b4493eeaSGrégory Soutadé (size_t)(hc_erase_grp_sz * hc_wp_grp_sz); 335b4493eeaSGrégory Soutadé card->ext_csd.enhanced_area_size <<= 9; 336b4493eeaSGrégory Soutadé } else { 337b4493eeaSGrégory Soutadé /* 338b4493eeaSGrégory Soutadé * If the enhanced area is not enabled, disable these 339b4493eeaSGrégory Soutadé * device attributes. 340b4493eeaSGrégory Soutadé */ 341b4493eeaSGrégory Soutadé card->ext_csd.enhanced_area_offset = -EINVAL; 342b4493eeaSGrégory Soutadé card->ext_csd.enhanced_area_size = -EINVAL; 343b4493eeaSGrégory Soutadé } 344b4493eeaSGrégory Soutadé } 345b4493eeaSGrégory Soutadé 346b4493eeaSGrégory Soutadé static void mmc_manage_gp_partitions(struct mmc_card *card, u8 *ext_csd) 347b4493eeaSGrégory Soutadé { 348b4493eeaSGrégory Soutadé unsigned int part_size; 349b4493eeaSGrégory Soutadé u8 hc_erase_grp_sz = 0, hc_wp_grp_sz = 0; 350b4493eeaSGrégory Soutadé int idx; 351b4493eeaSGrégory Soutadé 352b4493eeaSGrégory Soutadé /* 353b4493eeaSGrégory Soutadé * General purpose partition feature support -- 354b4493eeaSGrégory Soutadé * If ext_csd has the size of general purpose partitions, 355b4493eeaSGrégory Soutadé * set size, part_cfg, partition name in mmc_part. 356b4493eeaSGrégory Soutadé */ 357b4493eeaSGrégory Soutadé if (ext_csd[EXT_CSD_PARTITION_SUPPORT] & 358b4493eeaSGrégory Soutadé EXT_CSD_PART_SUPPORT_PART_EN) { 359b4493eeaSGrégory Soutadé if (card->ext_csd.enhanced_area_en != 1) { 360b4493eeaSGrégory Soutadé hc_erase_grp_sz = 361b4493eeaSGrégory Soutadé ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 362b4493eeaSGrégory Soutadé hc_wp_grp_sz = 363b4493eeaSGrégory Soutadé ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 364b4493eeaSGrégory Soutadé 365b4493eeaSGrégory Soutadé card->ext_csd.enhanced_area_en = 1; 366b4493eeaSGrégory Soutadé } 367b4493eeaSGrégory Soutadé 368b4493eeaSGrégory Soutadé for (idx = 0; idx < MMC_NUM_GP_PARTITION; idx++) { 369b4493eeaSGrégory Soutadé if (!ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3] && 370b4493eeaSGrégory Soutadé !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] && 371b4493eeaSGrégory Soutadé !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2]) 372b4493eeaSGrégory Soutadé continue; 373b4493eeaSGrégory Soutadé part_size = 374b4493eeaSGrégory Soutadé (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2] 375b4493eeaSGrégory Soutadé << 16) + 376b4493eeaSGrégory Soutadé (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] 377b4493eeaSGrégory Soutadé << 8) + 378b4493eeaSGrégory Soutadé ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3]; 379b4493eeaSGrégory Soutadé part_size *= (size_t)(hc_erase_grp_sz * 380b4493eeaSGrégory Soutadé hc_wp_grp_sz); 381b4493eeaSGrégory Soutadé mmc_part_add(card, part_size << 19, 382b4493eeaSGrégory Soutadé EXT_CSD_PART_CONFIG_ACC_GP0 + idx, 383b4493eeaSGrégory Soutadé "gp%d", idx, false, 384b4493eeaSGrégory Soutadé MMC_BLK_DATA_AREA_GP); 385b4493eeaSGrégory Soutadé } 386b4493eeaSGrégory Soutadé } 387b4493eeaSGrégory Soutadé } 388b4493eeaSGrégory Soutadé 38908ee80ccSPhilip Rakity /* 39008ee80ccSPhilip Rakity * Decode extended CSD. 39108ee80ccSPhilip Rakity */ 39208ee80ccSPhilip Rakity static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd) 39308ee80ccSPhilip Rakity { 394e0c368d5SNamjae Jeon int err = 0, idx; 395e0c368d5SNamjae Jeon unsigned int part_size; 39608ee80ccSPhilip Rakity 39708ee80ccSPhilip Rakity BUG_ON(!card); 39808ee80ccSPhilip Rakity 39908ee80ccSPhilip Rakity if (!ext_csd) 40008ee80ccSPhilip Rakity return 0; 40108ee80ccSPhilip Rakity 4026da24b78SKyungmin Park /* Version is coded in the CSD_STRUCTURE byte in the EXT_CSD register */ 403f39b2dd9SPhilip Rakity card->ext_csd.raw_ext_csd_structure = ext_csd[EXT_CSD_STRUCTURE]; 4046da24b78SKyungmin Park if (card->csd.structure == 3) { 405f39b2dd9SPhilip Rakity if (card->ext_csd.raw_ext_csd_structure > 2) { 406a3c76eb9SGirish K S pr_err("%s: unrecognised EXT_CSD structure " 4078fdd8521SPierre Ossman "version %d\n", mmc_hostname(card->host), 408f39b2dd9SPhilip Rakity card->ext_csd.raw_ext_csd_structure); 4096da24b78SKyungmin Park err = -EINVAL; 4106da24b78SKyungmin Park goto out; 4116da24b78SKyungmin Park } 4126da24b78SKyungmin Park } 4136da24b78SKyungmin Park 41403a59437SRomain Izard /* 41503a59437SRomain Izard * The EXT_CSD format is meant to be forward compatible. As long 41603a59437SRomain Izard * as CSD_STRUCTURE does not change, all values for EXT_CSD_REV 41703a59437SRomain Izard * are authorized, see JEDEC JESD84-B50 section B.8. 41803a59437SRomain Izard */ 4196da24b78SKyungmin Park card->ext_csd.rev = ext_csd[EXT_CSD_REV]; 420d7604d76SPierre Ossman 421f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[0] = ext_csd[EXT_CSD_SEC_CNT + 0]; 422f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[1] = ext_csd[EXT_CSD_SEC_CNT + 1]; 423f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[2] = ext_csd[EXT_CSD_SEC_CNT + 2]; 424f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[3] = ext_csd[EXT_CSD_SEC_CNT + 3]; 425b1ebe384SJarkko Lavinen if (card->ext_csd.rev >= 2) { 4267ea239d9SPierre Ossman card->ext_csd.sectors = 4277ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 0] << 0 | 4287ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 1] << 8 | 4297ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 2] << 16 | 4307ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 3] << 24; 431fc8a0985SHanumath Prasad 432fc8a0985SHanumath Prasad /* Cards with density > 2GiB are sector addressed */ 433fc8a0985SHanumath Prasad if (card->ext_csd.sectors > (2u * 1024 * 1024 * 1024) / 512) 4347ea239d9SPierre Ossman mmc_card_set_blockaddr(card); 435d7604d76SPierre Ossman } 43696cf5f02SSeungwon Jeon 437f39b2dd9SPhilip Rakity card->ext_csd.raw_card_type = ext_csd[EXT_CSD_CARD_TYPE]; 43896cf5f02SSeungwon Jeon mmc_select_card_type(card); 4397ea239d9SPierre Ossman 440f39b2dd9SPhilip Rakity card->ext_csd.raw_s_a_timeout = ext_csd[EXT_CSD_S_A_TIMEOUT]; 441f39b2dd9SPhilip Rakity card->ext_csd.raw_erase_timeout_mult = 442f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; 443f39b2dd9SPhilip Rakity card->ext_csd.raw_hc_erase_grp_size = 444f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 445b1ebe384SJarkko Lavinen if (card->ext_csd.rev >= 3) { 446b1ebe384SJarkko Lavinen u8 sa_shift = ext_csd[EXT_CSD_S_A_TIMEOUT]; 447371a689fSAndrei Warkentin card->ext_csd.part_config = ext_csd[EXT_CSD_PART_CONFIG]; 448371a689fSAndrei Warkentin 449371a689fSAndrei Warkentin /* EXT_CSD value is in units of 10ms, but we store in ms */ 450371a689fSAndrei Warkentin card->ext_csd.part_time = 10 * ext_csd[EXT_CSD_PART_SWITCH_TIME]; 451b1ebe384SJarkko Lavinen 452b1ebe384SJarkko Lavinen /* Sleep / awake timeout in 100ns units */ 453b1ebe384SJarkko Lavinen if (sa_shift > 0 && sa_shift <= 0x17) 454b1ebe384SJarkko Lavinen card->ext_csd.sa_timeout = 455b1ebe384SJarkko Lavinen 1 << ext_csd[EXT_CSD_S_A_TIMEOUT]; 456dfe86cbaSAdrian Hunter card->ext_csd.erase_group_def = 457dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_ERASE_GROUP_DEF]; 458dfe86cbaSAdrian Hunter card->ext_csd.hc_erase_timeout = 300 * 459dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; 460dfe86cbaSAdrian Hunter card->ext_csd.hc_erase_size = 461dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] << 10; 462f4c5522bSAndrei Warkentin 463f4c5522bSAndrei Warkentin card->ext_csd.rel_sectors = ext_csd[EXT_CSD_REL_WR_SEC_C]; 464371a689fSAndrei Warkentin 465371a689fSAndrei Warkentin /* 466371a689fSAndrei Warkentin * There are two boot regions of equal size, defined in 467371a689fSAndrei Warkentin * multiples of 128K. 468371a689fSAndrei Warkentin */ 469e0c368d5SNamjae Jeon if (ext_csd[EXT_CSD_BOOT_MULT] && mmc_boot_partition_access(card->host)) { 470e0c368d5SNamjae Jeon for (idx = 0; idx < MMC_NUM_BOOT_PARTITION; idx++) { 471e0c368d5SNamjae Jeon part_size = ext_csd[EXT_CSD_BOOT_MULT] << 17; 472e0c368d5SNamjae Jeon mmc_part_add(card, part_size, 473e0c368d5SNamjae Jeon EXT_CSD_PART_CONFIG_ACC_BOOT0 + idx, 474add710eaSJohan Rudholm "boot%d", idx, true, 475add710eaSJohan Rudholm MMC_BLK_DATA_AREA_BOOT); 476e0c368d5SNamjae Jeon } 477e0c368d5SNamjae Jeon } 478b1ebe384SJarkko Lavinen } 479b1ebe384SJarkko Lavinen 480f39b2dd9SPhilip Rakity card->ext_csd.raw_hc_erase_gap_size = 481dd13b4edSJurgen Heeks ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 482f39b2dd9SPhilip Rakity card->ext_csd.raw_sec_trim_mult = 483f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_SEC_TRIM_MULT]; 484f39b2dd9SPhilip Rakity card->ext_csd.raw_sec_erase_mult = 485f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_SEC_ERASE_MULT]; 486f39b2dd9SPhilip Rakity card->ext_csd.raw_sec_feature_support = 487f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; 488f39b2dd9SPhilip Rakity card->ext_csd.raw_trim_mult = 489f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_TRIM_MULT]; 490836dc2feSPhilip Rakity card->ext_csd.raw_partition_support = ext_csd[EXT_CSD_PARTITION_SUPPORT]; 491dfe86cbaSAdrian Hunter if (card->ext_csd.rev >= 4) { 492b4493eeaSGrégory Soutadé mmc_manage_enhanced_area(card, ext_csd); 493709de99dSChuanxiao Dong 494b4493eeaSGrégory Soutadé mmc_manage_gp_partitions(card, ext_csd); 495e0c368d5SNamjae Jeon 496dfe86cbaSAdrian Hunter card->ext_csd.sec_trim_mult = 497dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_SEC_TRIM_MULT]; 498dfe86cbaSAdrian Hunter card->ext_csd.sec_erase_mult = 499dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_SEC_ERASE_MULT]; 500dfe86cbaSAdrian Hunter card->ext_csd.sec_feature_support = 501dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; 502dfe86cbaSAdrian Hunter card->ext_csd.trim_timeout = 300 * 503dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_TRIM_MULT]; 504add710eaSJohan Rudholm 505add710eaSJohan Rudholm /* 506add710eaSJohan Rudholm * Note that the call to mmc_part_add above defaults to read 507add710eaSJohan Rudholm * only. If this default assumption is changed, the call must 508add710eaSJohan Rudholm * take into account the value of boot_locked below. 509add710eaSJohan Rudholm */ 510add710eaSJohan Rudholm card->ext_csd.boot_ro_lock = ext_csd[EXT_CSD_BOOT_WP]; 511add710eaSJohan Rudholm card->ext_csd.boot_ro_lockable = true; 51260443712SFredrik Soderstedt 51360443712SFredrik Soderstedt /* Save power class values */ 51460443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_52_195 = 51560443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_52_195]; 51660443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_26_195 = 51760443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_26_195]; 51860443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_52_360 = 51960443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_52_360]; 52060443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_26_360 = 52160443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_26_360]; 52260443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_200_195 = 52360443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_200_195]; 52460443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_200_360 = 52560443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_200_360]; 52660443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_ddr_52_195 = 52760443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_DDR_52_195]; 52860443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_ddr_52_360 = 52960443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_DDR_52_360]; 5300a5b6438SSeungwon Jeon card->ext_csd.raw_pwr_cl_ddr_200_360 = 5310a5b6438SSeungwon Jeon ext_csd[EXT_CSD_PWR_CL_DDR_200_360]; 532dfe86cbaSAdrian Hunter } 533dfe86cbaSAdrian Hunter 534b2499518SAdrian Hunter if (card->ext_csd.rev >= 5) { 5357c4f10acSRomain Izard /* Adjust production date as per JEDEC JESD84-B451 */ 5367c4f10acSRomain Izard if (card->cid.year < 2010) 5377c4f10acSRomain Izard card->cid.year += 16; 5387c4f10acSRomain Izard 539950d56acSJaehoon Chung /* check whether the eMMC card supports BKOPS */ 540950d56acSJaehoon Chung if (ext_csd[EXT_CSD_BKOPS_SUPPORT] & 0x1) { 541950d56acSJaehoon Chung card->ext_csd.bkops = 1; 542950d56acSJaehoon Chung card->ext_csd.bkops_en = ext_csd[EXT_CSD_BKOPS_EN]; 543950d56acSJaehoon Chung card->ext_csd.raw_bkops_status = 544950d56acSJaehoon Chung ext_csd[EXT_CSD_BKOPS_STATUS]; 545950d56acSJaehoon Chung if (!card->ext_csd.bkops_en) 546950d56acSJaehoon Chung pr_info("%s: BKOPS_EN bit is not set\n", 547950d56acSJaehoon Chung mmc_hostname(card->host)); 548950d56acSJaehoon Chung } 549950d56acSJaehoon Chung 550eb0d8f13SJaehoon Chung /* check whether the eMMC card supports HPI */ 551eb0d8f13SJaehoon Chung if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x1) { 552eb0d8f13SJaehoon Chung card->ext_csd.hpi = 1; 553eb0d8f13SJaehoon Chung if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x2) 554eb0d8f13SJaehoon Chung card->ext_csd.hpi_cmd = MMC_STOP_TRANSMISSION; 555eb0d8f13SJaehoon Chung else 556eb0d8f13SJaehoon Chung card->ext_csd.hpi_cmd = MMC_SEND_STATUS; 557eb0d8f13SJaehoon Chung /* 558eb0d8f13SJaehoon Chung * Indicate the maximum timeout to close 559eb0d8f13SJaehoon Chung * a command interrupted by HPI 560eb0d8f13SJaehoon Chung */ 561eb0d8f13SJaehoon Chung card->ext_csd.out_of_int_time = 562eb0d8f13SJaehoon Chung ext_csd[EXT_CSD_OUT_OF_INTERRUPT_TIME] * 10; 563eb0d8f13SJaehoon Chung } 564eb0d8f13SJaehoon Chung 565f4c5522bSAndrei Warkentin card->ext_csd.rel_param = ext_csd[EXT_CSD_WR_REL_PARAM]; 566b2499518SAdrian Hunter card->ext_csd.rst_n_function = ext_csd[EXT_CSD_RST_N_FUNCTION]; 567090d25feSLoic Pallardy 568090d25feSLoic Pallardy /* 569090d25feSLoic Pallardy * RPMB regions are defined in multiples of 128K. 570090d25feSLoic Pallardy */ 571090d25feSLoic Pallardy card->ext_csd.raw_rpmb_size_mult = ext_csd[EXT_CSD_RPMB_MULT]; 572d0123ccaSBalaji T K if (ext_csd[EXT_CSD_RPMB_MULT] && mmc_host_cmd23(card->host)) { 573090d25feSLoic Pallardy mmc_part_add(card, ext_csd[EXT_CSD_RPMB_MULT] << 17, 574090d25feSLoic Pallardy EXT_CSD_PART_CONFIG_ACC_RPMB, 575090d25feSLoic Pallardy "rpmb", 0, false, 576090d25feSLoic Pallardy MMC_BLK_DATA_AREA_RPMB); 577090d25feSLoic Pallardy } 578b2499518SAdrian Hunter } 579f4c5522bSAndrei Warkentin 5805238acbeSAndrei Warkentin card->ext_csd.raw_erased_mem_count = ext_csd[EXT_CSD_ERASED_MEM_CONT]; 581dfe86cbaSAdrian Hunter if (ext_csd[EXT_CSD_ERASED_MEM_CONT]) 582dfe86cbaSAdrian Hunter card->erased_byte = 0xFF; 583dfe86cbaSAdrian Hunter else 584dfe86cbaSAdrian Hunter card->erased_byte = 0x0; 585dfe86cbaSAdrian Hunter 586336c716aSSeungwon Jeon /* eMMC v4.5 or later */ 587bec8726aSGirish K S if (card->ext_csd.rev >= 6) { 588336c716aSSeungwon Jeon card->ext_csd.feature_support |= MMC_DISCARD_FEATURE; 589336c716aSSeungwon Jeon 590b23cf0bdSSeungwon Jeon card->ext_csd.generic_cmd6_time = 10 * 591b23cf0bdSSeungwon Jeon ext_csd[EXT_CSD_GENERIC_CMD6_TIME]; 592bec8726aSGirish K S card->ext_csd.power_off_longtime = 10 * 593bec8726aSGirish K S ext_csd[EXT_CSD_POWER_OFF_LONG_TIME]; 594b23cf0bdSSeungwon Jeon 595881d1c25SSeungwon Jeon card->ext_csd.cache_size = 596881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 0] << 0 | 597881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 1] << 8 | 598881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 2] << 16 | 599881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 3] << 24; 6004265900eSSaugata Das 6014265900eSSaugata Das if (ext_csd[EXT_CSD_DATA_SECTOR_SIZE] == 1) 6024265900eSSaugata Das card->ext_csd.data_sector_size = 4096; 6034265900eSSaugata Das else 6044265900eSSaugata Das card->ext_csd.data_sector_size = 512; 6054265900eSSaugata Das 6064265900eSSaugata Das if ((ext_csd[EXT_CSD_DATA_TAG_SUPPORT] & 1) && 6074265900eSSaugata Das (ext_csd[EXT_CSD_TAG_UNIT_SIZE] <= 8)) { 6084265900eSSaugata Das card->ext_csd.data_tag_unit_size = 6094265900eSSaugata Das ((unsigned int) 1 << ext_csd[EXT_CSD_TAG_UNIT_SIZE]) * 6104265900eSSaugata Das (card->ext_csd.data_sector_size); 6114265900eSSaugata Das } else { 6124265900eSSaugata Das card->ext_csd.data_tag_unit_size = 0; 6134265900eSSaugata Das } 614abd9ac14SSeungwon Jeon 615abd9ac14SSeungwon Jeon card->ext_csd.max_packed_writes = 616abd9ac14SSeungwon Jeon ext_csd[EXT_CSD_MAX_PACKED_WRITES]; 617abd9ac14SSeungwon Jeon card->ext_csd.max_packed_reads = 618abd9ac14SSeungwon Jeon ext_csd[EXT_CSD_MAX_PACKED_READS]; 619a5075eb9SSaugata Das } else { 620a5075eb9SSaugata Das card->ext_csd.data_sector_size = 512; 621336c716aSSeungwon Jeon } 622881d1c25SSeungwon Jeon 6237ea239d9SPierre Ossman out: 62408ee80ccSPhilip Rakity return err; 62508ee80ccSPhilip Rakity } 6267ea239d9SPierre Ossman 62708ee80ccSPhilip Rakity static inline void mmc_free_ext_csd(u8 *ext_csd) 62808ee80ccSPhilip Rakity { 62908ee80ccSPhilip Rakity kfree(ext_csd); 63008ee80ccSPhilip Rakity } 63108ee80ccSPhilip Rakity 63208ee80ccSPhilip Rakity 633f39b2dd9SPhilip Rakity static int mmc_compare_ext_csds(struct mmc_card *card, unsigned bus_width) 63408ee80ccSPhilip Rakity { 63508ee80ccSPhilip Rakity u8 *bw_ext_csd; 63608ee80ccSPhilip Rakity int err; 63708ee80ccSPhilip Rakity 638f39b2dd9SPhilip Rakity if (bus_width == MMC_BUS_WIDTH_1) 639f39b2dd9SPhilip Rakity return 0; 64008ee80ccSPhilip Rakity 641f39b2dd9SPhilip Rakity err = mmc_get_ext_csd(card, &bw_ext_csd); 642f39b2dd9SPhilip Rakity 643f39b2dd9SPhilip Rakity if (err || bw_ext_csd == NULL) { 64408ee80ccSPhilip Rakity err = -EINVAL; 64508ee80ccSPhilip Rakity goto out; 64608ee80ccSPhilip Rakity } 64708ee80ccSPhilip Rakity 64808ee80ccSPhilip Rakity /* only compare read only fields */ 649dd13b4edSJurgen Heeks err = !((card->ext_csd.raw_partition_support == 65008ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_PARTITION_SUPPORT]) && 651f39b2dd9SPhilip Rakity (card->ext_csd.raw_erased_mem_count == 65208ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_ERASED_MEM_CONT]) && 653f39b2dd9SPhilip Rakity (card->ext_csd.rev == 65408ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_REV]) && 655f39b2dd9SPhilip Rakity (card->ext_csd.raw_ext_csd_structure == 65608ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_STRUCTURE]) && 657f39b2dd9SPhilip Rakity (card->ext_csd.raw_card_type == 65808ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_CARD_TYPE]) && 659f39b2dd9SPhilip Rakity (card->ext_csd.raw_s_a_timeout == 66008ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_S_A_TIMEOUT]) && 661f39b2dd9SPhilip Rakity (card->ext_csd.raw_hc_erase_gap_size == 66208ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_HC_WP_GRP_SIZE]) && 663f39b2dd9SPhilip Rakity (card->ext_csd.raw_erase_timeout_mult == 66408ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]) && 665f39b2dd9SPhilip Rakity (card->ext_csd.raw_hc_erase_grp_size == 66608ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]) && 667f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_trim_mult == 66808ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_TRIM_MULT]) && 669f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_erase_mult == 67008ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_ERASE_MULT]) && 671f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_feature_support == 67208ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]) && 673f39b2dd9SPhilip Rakity (card->ext_csd.raw_trim_mult == 67408ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_TRIM_MULT]) && 675f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[0] == 676f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 0]) && 677f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[1] == 678f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 1]) && 679f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[2] == 680f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 2]) && 681f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[3] == 68260443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_SEC_CNT + 3]) && 68360443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_52_195 == 68460443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_52_195]) && 68560443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_26_195 == 68660443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_26_195]) && 68760443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_52_360 == 68860443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_52_360]) && 68960443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_26_360 == 69060443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_26_360]) && 69160443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_200_195 == 69260443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_200_195]) && 69360443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_200_360 == 69460443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_200_360]) && 69560443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_ddr_52_195 == 69660443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_195]) && 69760443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_ddr_52_360 == 6980a5b6438SSeungwon Jeon bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_360]) && 6990a5b6438SSeungwon Jeon (card->ext_csd.raw_pwr_cl_ddr_200_360 == 7000a5b6438SSeungwon Jeon bw_ext_csd[EXT_CSD_PWR_CL_DDR_200_360])); 7010a5b6438SSeungwon Jeon 70208ee80ccSPhilip Rakity if (err) 70308ee80ccSPhilip Rakity err = -EINVAL; 70408ee80ccSPhilip Rakity 70508ee80ccSPhilip Rakity out: 70608ee80ccSPhilip Rakity mmc_free_ext_csd(bw_ext_csd); 7077ea239d9SPierre Ossman return err; 7087ea239d9SPierre Ossman } 7097ea239d9SPierre Ossman 71051ec92e2SPierre Ossman MMC_DEV_ATTR(cid, "%08x%08x%08x%08x\n", card->raw_cid[0], card->raw_cid[1], 71151ec92e2SPierre Ossman card->raw_cid[2], card->raw_cid[3]); 71251ec92e2SPierre Ossman MMC_DEV_ATTR(csd, "%08x%08x%08x%08x\n", card->raw_csd[0], card->raw_csd[1], 71351ec92e2SPierre Ossman card->raw_csd[2], card->raw_csd[3]); 71451ec92e2SPierre Ossman MMC_DEV_ATTR(date, "%02d/%04d\n", card->cid.month, card->cid.year); 715dfe86cbaSAdrian Hunter MMC_DEV_ATTR(erase_size, "%u\n", card->erase_size << 9); 716dfe86cbaSAdrian Hunter MMC_DEV_ATTR(preferred_erase_size, "%u\n", card->pref_erase << 9); 71751ec92e2SPierre Ossman MMC_DEV_ATTR(fwrev, "0x%x\n", card->cid.fwrev); 71851ec92e2SPierre Ossman MMC_DEV_ATTR(hwrev, "0x%x\n", card->cid.hwrev); 71951ec92e2SPierre Ossman MMC_DEV_ATTR(manfid, "0x%06x\n", card->cid.manfid); 72051ec92e2SPierre Ossman MMC_DEV_ATTR(name, "%s\n", card->cid.prod_name); 72151ec92e2SPierre Ossman MMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid); 72251e7e8b6SBernie Thompson MMC_DEV_ATTR(prv, "0x%x\n", card->cid.prv); 72351ec92e2SPierre Ossman MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial); 724709de99dSChuanxiao Dong MMC_DEV_ATTR(enhanced_area_offset, "%llu\n", 725709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset); 726709de99dSChuanxiao Dong MMC_DEV_ATTR(enhanced_area_size, "%u\n", card->ext_csd.enhanced_area_size); 727188cc042SLoic Pallardy MMC_DEV_ATTR(raw_rpmb_size_mult, "%#x\n", card->ext_csd.raw_rpmb_size_mult); 728188cc042SLoic Pallardy MMC_DEV_ATTR(rel_sectors, "%#x\n", card->ext_csd.rel_sectors); 72951ec92e2SPierre Ossman 73051ec92e2SPierre Ossman static struct attribute *mmc_std_attrs[] = { 73151ec92e2SPierre Ossman &dev_attr_cid.attr, 73251ec92e2SPierre Ossman &dev_attr_csd.attr, 73351ec92e2SPierre Ossman &dev_attr_date.attr, 734dfe86cbaSAdrian Hunter &dev_attr_erase_size.attr, 735dfe86cbaSAdrian Hunter &dev_attr_preferred_erase_size.attr, 73651ec92e2SPierre Ossman &dev_attr_fwrev.attr, 73751ec92e2SPierre Ossman &dev_attr_hwrev.attr, 73851ec92e2SPierre Ossman &dev_attr_manfid.attr, 73951ec92e2SPierre Ossman &dev_attr_name.attr, 74051ec92e2SPierre Ossman &dev_attr_oemid.attr, 74151e7e8b6SBernie Thompson &dev_attr_prv.attr, 74251ec92e2SPierre Ossman &dev_attr_serial.attr, 743709de99dSChuanxiao Dong &dev_attr_enhanced_area_offset.attr, 744709de99dSChuanxiao Dong &dev_attr_enhanced_area_size.attr, 745188cc042SLoic Pallardy &dev_attr_raw_rpmb_size_mult.attr, 746188cc042SLoic Pallardy &dev_attr_rel_sectors.attr, 74751ec92e2SPierre Ossman NULL, 74851ec92e2SPierre Ossman }; 749d1e58212SAxel Lin ATTRIBUTE_GROUPS(mmc_std); 75051ec92e2SPierre Ossman 75151ec92e2SPierre Ossman static struct device_type mmc_type = { 752d1e58212SAxel Lin .groups = mmc_std_groups, 75351ec92e2SPierre Ossman }; 75451ec92e2SPierre Ossman 7557ea239d9SPierre Ossman /* 756b87d8dbfSGirish K S * Select the PowerClass for the current bus width 757b87d8dbfSGirish K S * If power class is defined for 4/8 bit bus in the 758b87d8dbfSGirish K S * extended CSD register, select it by executing the 759b87d8dbfSGirish K S * mmc_switch command. 760b87d8dbfSGirish K S */ 7612385049dSSeungwon Jeon static int __mmc_select_powerclass(struct mmc_card *card, 76260443712SFredrik Soderstedt unsigned int bus_width) 763b87d8dbfSGirish K S { 7642385049dSSeungwon Jeon struct mmc_host *host = card->host; 7652385049dSSeungwon Jeon struct mmc_ext_csd *ext_csd = &card->ext_csd; 76660443712SFredrik Soderstedt unsigned int pwrclass_val = 0; 7672385049dSSeungwon Jeon int err = 0; 768b87d8dbfSGirish K S 769b87d8dbfSGirish K S /* Power class selection is supported for versions >= 4.0 */ 770b87d8dbfSGirish K S if (card->csd.mmca_vsn < CSD_SPEC_VER_4) 771b87d8dbfSGirish K S return 0; 772b87d8dbfSGirish K S 773b87d8dbfSGirish K S /* Power class values are defined only for 4/8 bit bus */ 774b87d8dbfSGirish K S if (bus_width == EXT_CSD_BUS_WIDTH_1) 775b87d8dbfSGirish K S return 0; 776b87d8dbfSGirish K S 777b87d8dbfSGirish K S switch (1 << host->ios.vdd) { 778b87d8dbfSGirish K S case MMC_VDD_165_195: 7792385049dSSeungwon Jeon if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) 7802385049dSSeungwon Jeon pwrclass_val = ext_csd->raw_pwr_cl_26_195; 7812385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR) 78260443712SFredrik Soderstedt pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? 7832385049dSSeungwon Jeon ext_csd->raw_pwr_cl_52_195 : 7842385049dSSeungwon Jeon ext_csd->raw_pwr_cl_ddr_52_195; 7852385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HS200_MAX_DTR) 7862385049dSSeungwon Jeon pwrclass_val = ext_csd->raw_pwr_cl_200_195; 787b87d8dbfSGirish K S break; 78893fc5a47SSubhash Jadavani case MMC_VDD_27_28: 78993fc5a47SSubhash Jadavani case MMC_VDD_28_29: 79093fc5a47SSubhash Jadavani case MMC_VDD_29_30: 79193fc5a47SSubhash Jadavani case MMC_VDD_30_31: 79293fc5a47SSubhash Jadavani case MMC_VDD_31_32: 793b87d8dbfSGirish K S case MMC_VDD_32_33: 794b87d8dbfSGirish K S case MMC_VDD_33_34: 795b87d8dbfSGirish K S case MMC_VDD_34_35: 796b87d8dbfSGirish K S case MMC_VDD_35_36: 7972385049dSSeungwon Jeon if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) 7982385049dSSeungwon Jeon pwrclass_val = ext_csd->raw_pwr_cl_26_360; 7992385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR) 80060443712SFredrik Soderstedt pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? 8012385049dSSeungwon Jeon ext_csd->raw_pwr_cl_52_360 : 8022385049dSSeungwon Jeon ext_csd->raw_pwr_cl_ddr_52_360; 8032385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HS200_MAX_DTR) 8040a5b6438SSeungwon Jeon pwrclass_val = (bus_width == EXT_CSD_DDR_BUS_WIDTH_8) ? 8050a5b6438SSeungwon Jeon ext_csd->raw_pwr_cl_ddr_200_360 : 8060a5b6438SSeungwon Jeon ext_csd->raw_pwr_cl_200_360; 807b87d8dbfSGirish K S break; 808b87d8dbfSGirish K S default: 809b87d8dbfSGirish K S pr_warning("%s: Voltage range not supported " 810b87d8dbfSGirish K S "for power class.\n", mmc_hostname(host)); 811b87d8dbfSGirish K S return -EINVAL; 812b87d8dbfSGirish K S } 813b87d8dbfSGirish K S 814b87d8dbfSGirish K S if (bus_width & (EXT_CSD_BUS_WIDTH_8 | EXT_CSD_DDR_BUS_WIDTH_8)) 815b87d8dbfSGirish K S pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_8BIT_MASK) >> 816b87d8dbfSGirish K S EXT_CSD_PWR_CL_8BIT_SHIFT; 817b87d8dbfSGirish K S else 818b87d8dbfSGirish K S pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_4BIT_MASK) >> 819b87d8dbfSGirish K S EXT_CSD_PWR_CL_4BIT_SHIFT; 820b87d8dbfSGirish K S 821b87d8dbfSGirish K S /* If the power class is different from the default value */ 822b87d8dbfSGirish K S if (pwrclass_val > 0) { 823b87d8dbfSGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 824b87d8dbfSGirish K S EXT_CSD_POWER_CLASS, 825b87d8dbfSGirish K S pwrclass_val, 82671fe3eb0SSeungwon Jeon card->ext_csd.generic_cmd6_time); 827b87d8dbfSGirish K S } 828b87d8dbfSGirish K S 829b87d8dbfSGirish K S return err; 830b87d8dbfSGirish K S } 831b87d8dbfSGirish K S 8322385049dSSeungwon Jeon static int mmc_select_powerclass(struct mmc_card *card) 8332385049dSSeungwon Jeon { 8342385049dSSeungwon Jeon struct mmc_host *host = card->host; 8352385049dSSeungwon Jeon u32 bus_width, ext_csd_bits; 8362385049dSSeungwon Jeon int err, ddr; 8372385049dSSeungwon Jeon 8382385049dSSeungwon Jeon /* Power class selection is supported for versions >= 4.0 */ 8392385049dSSeungwon Jeon if (card->csd.mmca_vsn < CSD_SPEC_VER_4) 8402385049dSSeungwon Jeon return 0; 8412385049dSSeungwon Jeon 8422385049dSSeungwon Jeon bus_width = host->ios.bus_width; 8432385049dSSeungwon Jeon /* Power class values are defined only for 4/8 bit bus */ 8442385049dSSeungwon Jeon if (bus_width == MMC_BUS_WIDTH_1) 8452385049dSSeungwon Jeon return 0; 8462385049dSSeungwon Jeon 8472385049dSSeungwon Jeon ddr = card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52; 8482385049dSSeungwon Jeon if (ddr) 8492385049dSSeungwon Jeon ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? 8502385049dSSeungwon Jeon EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; 8512385049dSSeungwon Jeon else 8522385049dSSeungwon Jeon ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? 8532385049dSSeungwon Jeon EXT_CSD_BUS_WIDTH_8 : EXT_CSD_BUS_WIDTH_4; 8542385049dSSeungwon Jeon 8552385049dSSeungwon Jeon err = __mmc_select_powerclass(card, ext_csd_bits); 8562385049dSSeungwon Jeon if (err) 8572385049dSSeungwon Jeon pr_warn("%s: power class selection to bus width %d ddr %d failed\n", 8582385049dSSeungwon Jeon mmc_hostname(host), 1 << bus_width, ddr); 8592385049dSSeungwon Jeon 8602385049dSSeungwon Jeon return err; 8612385049dSSeungwon Jeon } 8622385049dSSeungwon Jeon 863b87d8dbfSGirish K S /* 864577fb131SSeungwon Jeon * Set the bus speed for the selected speed mode. 865a4924c71SGirish K S */ 866577fb131SSeungwon Jeon static void mmc_set_bus_speed(struct mmc_card *card) 867a4924c71SGirish K S { 868577fb131SSeungwon Jeon unsigned int max_dtr = (unsigned int)-1; 869577fb131SSeungwon Jeon 8700a5b6438SSeungwon Jeon if ((mmc_card_hs200(card) || mmc_card_hs400(card)) && 8710a5b6438SSeungwon Jeon max_dtr > card->ext_csd.hs200_max_dtr) 872577fb131SSeungwon Jeon max_dtr = card->ext_csd.hs200_max_dtr; 873577fb131SSeungwon Jeon else if (mmc_card_hs(card) && max_dtr > card->ext_csd.hs_max_dtr) 874577fb131SSeungwon Jeon max_dtr = card->ext_csd.hs_max_dtr; 875577fb131SSeungwon Jeon else if (max_dtr > card->csd.max_dtr) 876577fb131SSeungwon Jeon max_dtr = card->csd.max_dtr; 877577fb131SSeungwon Jeon 878577fb131SSeungwon Jeon mmc_set_clock(card->host, max_dtr); 879577fb131SSeungwon Jeon } 880577fb131SSeungwon Jeon 881577fb131SSeungwon Jeon /* 882577fb131SSeungwon Jeon * Select the bus width amoung 4-bit and 8-bit(SDR). 883577fb131SSeungwon Jeon * If the bus width is changed successfully, return the selected width value. 884577fb131SSeungwon Jeon * Zero is returned instead of error value if the wide width is not supported. 885577fb131SSeungwon Jeon */ 886577fb131SSeungwon Jeon static int mmc_select_bus_width(struct mmc_card *card) 887577fb131SSeungwon Jeon { 888a4924c71SGirish K S static unsigned ext_csd_bits[] = { 889a4924c71SGirish K S EXT_CSD_BUS_WIDTH_8, 890577fb131SSeungwon Jeon EXT_CSD_BUS_WIDTH_4, 891a4924c71SGirish K S }; 892a4924c71SGirish K S static unsigned bus_widths[] = { 893a4924c71SGirish K S MMC_BUS_WIDTH_8, 894577fb131SSeungwon Jeon MMC_BUS_WIDTH_4, 895a4924c71SGirish K S }; 896577fb131SSeungwon Jeon struct mmc_host *host = card->host; 897577fb131SSeungwon Jeon unsigned idx, bus_width = 0; 898577fb131SSeungwon Jeon int err = 0; 899a4924c71SGirish K S 900577fb131SSeungwon Jeon if ((card->csd.mmca_vsn < CSD_SPEC_VER_4) && 901577fb131SSeungwon Jeon !(host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) 902577fb131SSeungwon Jeon return 0; 903a4924c71SGirish K S 904577fb131SSeungwon Jeon idx = (host->caps & MMC_CAP_8_BIT_DATA) ? 0 : 1; 905a4924c71SGirish K S 906a4924c71SGirish K S /* 907a4924c71SGirish K S * Unlike SD, MMC cards dont have a configuration register to notify 908a4924c71SGirish K S * supported bus width. So bus test command should be run to identify 909a4924c71SGirish K S * the supported bus width or compare the ext csd values of current 910a4924c71SGirish K S * bus width and ext csd values of 1 bit mode read earlier. 911a4924c71SGirish K S */ 912577fb131SSeungwon Jeon for (; idx < ARRAY_SIZE(bus_widths); idx++) { 913a4924c71SGirish K S /* 914a4924c71SGirish K S * Host is capable of 8bit transfer, then switch 915a4924c71SGirish K S * the device to work in 8bit transfer mode. If the 916a4924c71SGirish K S * mmc switch command returns error then switch to 917a4924c71SGirish K S * 4bit transfer mode. On success set the corresponding 918a4924c71SGirish K S * bus width on the host. 919a4924c71SGirish K S */ 920a4924c71SGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 921a4924c71SGirish K S EXT_CSD_BUS_WIDTH, 922a4924c71SGirish K S ext_csd_bits[idx], 923a4924c71SGirish K S card->ext_csd.generic_cmd6_time); 924a4924c71SGirish K S if (err) 925a4924c71SGirish K S continue; 926a4924c71SGirish K S 927577fb131SSeungwon Jeon bus_width = bus_widths[idx]; 928577fb131SSeungwon Jeon mmc_set_bus_width(host, bus_width); 929a4924c71SGirish K S 930577fb131SSeungwon Jeon /* 931577fb131SSeungwon Jeon * If controller can't handle bus width test, 932577fb131SSeungwon Jeon * compare ext_csd previously read in 1 bit mode 933577fb131SSeungwon Jeon * against ext_csd at new bus width 934577fb131SSeungwon Jeon */ 935a4924c71SGirish K S if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST)) 936577fb131SSeungwon Jeon err = mmc_compare_ext_csds(card, bus_width); 937a4924c71SGirish K S else 938577fb131SSeungwon Jeon err = mmc_bus_test(card, bus_width); 939577fb131SSeungwon Jeon 940577fb131SSeungwon Jeon if (!err) { 941577fb131SSeungwon Jeon err = bus_width; 942a4924c71SGirish K S break; 943577fb131SSeungwon Jeon } else { 944577fb131SSeungwon Jeon pr_warn("%s: switch to bus width %d failed\n", 945577fb131SSeungwon Jeon mmc_hostname(host), ext_csd_bits[idx]); 946577fb131SSeungwon Jeon } 947a4924c71SGirish K S } 948a4924c71SGirish K S 949577fb131SSeungwon Jeon return err; 950577fb131SSeungwon Jeon } 951577fb131SSeungwon Jeon 952577fb131SSeungwon Jeon /* 953577fb131SSeungwon Jeon * Switch to the high-speed mode 954577fb131SSeungwon Jeon */ 955577fb131SSeungwon Jeon static int mmc_select_hs(struct mmc_card *card) 956577fb131SSeungwon Jeon { 957577fb131SSeungwon Jeon int err; 958577fb131SSeungwon Jeon 9594509f847SUlf Hansson err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 960577fb131SSeungwon Jeon EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS, 96157de31f6SUlf Hansson card->ext_csd.generic_cmd6_time, 96257de31f6SUlf Hansson true, true, true); 963577fb131SSeungwon Jeon if (!err) 964577fb131SSeungwon Jeon mmc_set_timing(card->host, MMC_TIMING_MMC_HS); 965577fb131SSeungwon Jeon 966577fb131SSeungwon Jeon return err; 967577fb131SSeungwon Jeon } 968577fb131SSeungwon Jeon 969577fb131SSeungwon Jeon /* 970577fb131SSeungwon Jeon * Activate wide bus and DDR if supported. 971577fb131SSeungwon Jeon */ 972577fb131SSeungwon Jeon static int mmc_select_hs_ddr(struct mmc_card *card) 973577fb131SSeungwon Jeon { 974577fb131SSeungwon Jeon struct mmc_host *host = card->host; 975577fb131SSeungwon Jeon u32 bus_width, ext_csd_bits; 976577fb131SSeungwon Jeon int err = 0; 977577fb131SSeungwon Jeon 978577fb131SSeungwon Jeon if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52)) 979577fb131SSeungwon Jeon return 0; 980577fb131SSeungwon Jeon 981577fb131SSeungwon Jeon bus_width = host->ios.bus_width; 982577fb131SSeungwon Jeon if (bus_width == MMC_BUS_WIDTH_1) 983577fb131SSeungwon Jeon return 0; 984577fb131SSeungwon Jeon 985577fb131SSeungwon Jeon ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? 986577fb131SSeungwon Jeon EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; 987577fb131SSeungwon Jeon 988577fb131SSeungwon Jeon err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 989577fb131SSeungwon Jeon EXT_CSD_BUS_WIDTH, 990577fb131SSeungwon Jeon ext_csd_bits, 991577fb131SSeungwon Jeon card->ext_csd.generic_cmd6_time); 992577fb131SSeungwon Jeon if (err) { 993577fb131SSeungwon Jeon pr_warn("%s: switch to bus width %d ddr failed\n", 994577fb131SSeungwon Jeon mmc_hostname(host), 1 << bus_width); 995577fb131SSeungwon Jeon return err; 996577fb131SSeungwon Jeon } 997577fb131SSeungwon Jeon 998577fb131SSeungwon Jeon /* 999577fb131SSeungwon Jeon * eMMC cards can support 3.3V to 1.2V i/o (vccq) 1000577fb131SSeungwon Jeon * signaling. 1001577fb131SSeungwon Jeon * 1002577fb131SSeungwon Jeon * EXT_CSD_CARD_TYPE_DDR_1_8V means 3.3V or 1.8V vccq. 1003577fb131SSeungwon Jeon * 1004577fb131SSeungwon Jeon * 1.8V vccq at 3.3V core voltage (vcc) is not required 1005577fb131SSeungwon Jeon * in the JEDEC spec for DDR. 1006577fb131SSeungwon Jeon * 1007312449efSChuanxiao.Dong * Even (e)MMC card can support 3.3v to 1.2v vccq, but not all 1008312449efSChuanxiao.Dong * host controller can support this, like some of the SDHCI 1009312449efSChuanxiao.Dong * controller which connect to an eMMC device. Some of these 1010312449efSChuanxiao.Dong * host controller still needs to use 1.8v vccq for supporting 1011312449efSChuanxiao.Dong * DDR mode. 1012312449efSChuanxiao.Dong * 1013312449efSChuanxiao.Dong * So the sequence will be: 1014312449efSChuanxiao.Dong * if (host and device can both support 1.2v IO) 1015312449efSChuanxiao.Dong * use 1.2v IO; 1016312449efSChuanxiao.Dong * else if (host and device can both support 1.8v IO) 1017312449efSChuanxiao.Dong * use 1.8v IO; 1018312449efSChuanxiao.Dong * so if host and device can only support 3.3v IO, this is the 1019312449efSChuanxiao.Dong * last choice. 1020577fb131SSeungwon Jeon * 1021577fb131SSeungwon Jeon * WARNING: eMMC rules are NOT the same as SD DDR 1022577fb131SSeungwon Jeon */ 1023312449efSChuanxiao.Dong err = -EINVAL; 1024312449efSChuanxiao.Dong if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_2V) 1025312449efSChuanxiao.Dong err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); 1026577fb131SSeungwon Jeon 1027312449efSChuanxiao.Dong if (err && (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_8V)) 1028312449efSChuanxiao.Dong err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); 1029312449efSChuanxiao.Dong 1030312449efSChuanxiao.Dong /* make sure vccq is 3.3v after switching disaster */ 1031312449efSChuanxiao.Dong if (err) 1032312449efSChuanxiao.Dong err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330); 1033312449efSChuanxiao.Dong 1034312449efSChuanxiao.Dong if (!err) 1035577fb131SSeungwon Jeon mmc_set_timing(host, MMC_TIMING_MMC_DDR52); 1036577fb131SSeungwon Jeon 1037577fb131SSeungwon Jeon return err; 1038577fb131SSeungwon Jeon } 1039577fb131SSeungwon Jeon 10400a5b6438SSeungwon Jeon static int mmc_select_hs400(struct mmc_card *card) 10410a5b6438SSeungwon Jeon { 10420a5b6438SSeungwon Jeon struct mmc_host *host = card->host; 10430a5b6438SSeungwon Jeon int err = 0; 10440a5b6438SSeungwon Jeon 10450a5b6438SSeungwon Jeon /* 10460a5b6438SSeungwon Jeon * HS400 mode requires 8-bit bus width 10470a5b6438SSeungwon Jeon */ 10480a5b6438SSeungwon Jeon if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 && 10490a5b6438SSeungwon Jeon host->ios.bus_width == MMC_BUS_WIDTH_8)) 10500a5b6438SSeungwon Jeon return 0; 10510a5b6438SSeungwon Jeon 10520a5b6438SSeungwon Jeon /* 10530a5b6438SSeungwon Jeon * Before switching to dual data rate operation for HS400, 10540a5b6438SSeungwon Jeon * it is required to convert from HS200 mode to HS mode. 10550a5b6438SSeungwon Jeon */ 10560a5b6438SSeungwon Jeon mmc_set_timing(card->host, MMC_TIMING_MMC_HS); 10570a5b6438SSeungwon Jeon mmc_set_bus_speed(card); 10580a5b6438SSeungwon Jeon 10590a5b6438SSeungwon Jeon err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 10600a5b6438SSeungwon Jeon EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS, 10610a5b6438SSeungwon Jeon card->ext_csd.generic_cmd6_time, 10620a5b6438SSeungwon Jeon true, true, true); 10630a5b6438SSeungwon Jeon if (err) { 10640a5b6438SSeungwon Jeon pr_warn("%s: switch to high-speed from hs200 failed, err:%d\n", 10650a5b6438SSeungwon Jeon mmc_hostname(host), err); 10660a5b6438SSeungwon Jeon return err; 10670a5b6438SSeungwon Jeon } 10680a5b6438SSeungwon Jeon 10690a5b6438SSeungwon Jeon err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 10700a5b6438SSeungwon Jeon EXT_CSD_BUS_WIDTH, 10710a5b6438SSeungwon Jeon EXT_CSD_DDR_BUS_WIDTH_8, 10720a5b6438SSeungwon Jeon card->ext_csd.generic_cmd6_time); 10730a5b6438SSeungwon Jeon if (err) { 10740a5b6438SSeungwon Jeon pr_warn("%s: switch to bus width for hs400 failed, err:%d\n", 10750a5b6438SSeungwon Jeon mmc_hostname(host), err); 10760a5b6438SSeungwon Jeon return err; 10770a5b6438SSeungwon Jeon } 10780a5b6438SSeungwon Jeon 10790a5b6438SSeungwon Jeon err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 10800a5b6438SSeungwon Jeon EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS400, 10810a5b6438SSeungwon Jeon card->ext_csd.generic_cmd6_time, 10820a5b6438SSeungwon Jeon true, true, true); 10830a5b6438SSeungwon Jeon if (err) { 10840a5b6438SSeungwon Jeon pr_warn("%s: switch to hs400 failed, err:%d\n", 10850a5b6438SSeungwon Jeon mmc_hostname(host), err); 10860a5b6438SSeungwon Jeon return err; 10870a5b6438SSeungwon Jeon } 10880a5b6438SSeungwon Jeon 10890a5b6438SSeungwon Jeon mmc_set_timing(host, MMC_TIMING_MMC_HS400); 10900a5b6438SSeungwon Jeon mmc_set_bus_speed(card); 10910a5b6438SSeungwon Jeon 10920a5b6438SSeungwon Jeon return 0; 10930a5b6438SSeungwon Jeon } 10940a5b6438SSeungwon Jeon 1095577fb131SSeungwon Jeon /* 1096577fb131SSeungwon Jeon * For device supporting HS200 mode, the following sequence 1097577fb131SSeungwon Jeon * should be done before executing the tuning process. 1098577fb131SSeungwon Jeon * 1. set the desired bus width(4-bit or 8-bit, 1-bit is not supported) 1099577fb131SSeungwon Jeon * 2. switch to HS200 mode 1100577fb131SSeungwon Jeon * 3. set the clock to > 52Mhz and <=200MHz 1101577fb131SSeungwon Jeon */ 1102577fb131SSeungwon Jeon static int mmc_select_hs200(struct mmc_card *card) 1103577fb131SSeungwon Jeon { 1104577fb131SSeungwon Jeon struct mmc_host *host = card->host; 1105577fb131SSeungwon Jeon int err = -EINVAL; 1106577fb131SSeungwon Jeon 1107577fb131SSeungwon Jeon if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_2V) 1108577fb131SSeungwon Jeon err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); 1109577fb131SSeungwon Jeon 1110577fb131SSeungwon Jeon if (err && card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_8V) 1111577fb131SSeungwon Jeon err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); 1112577fb131SSeungwon Jeon 1113577fb131SSeungwon Jeon /* If fails try again during next card power cycle */ 1114577fb131SSeungwon Jeon if (err) 1115577fb131SSeungwon Jeon goto err; 1116577fb131SSeungwon Jeon 1117577fb131SSeungwon Jeon /* 1118577fb131SSeungwon Jeon * Set the bus width(4 or 8) with host's support and 1119577fb131SSeungwon Jeon * switch to HS200 mode if bus width is set successfully. 1120577fb131SSeungwon Jeon */ 1121577fb131SSeungwon Jeon err = mmc_select_bus_width(card); 1122577fb131SSeungwon Jeon if (!IS_ERR_VALUE(err)) { 1123577fb131SSeungwon Jeon err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1124577fb131SSeungwon Jeon EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS200, 1125577fb131SSeungwon Jeon card->ext_csd.generic_cmd6_time, 1126577fb131SSeungwon Jeon true, true, true); 1127577fb131SSeungwon Jeon if (!err) 1128577fb131SSeungwon Jeon mmc_set_timing(host, MMC_TIMING_MMC_HS200); 1129577fb131SSeungwon Jeon } 1130a4924c71SGirish K S err: 1131a4924c71SGirish K S return err; 1132a4924c71SGirish K S } 1133a4924c71SGirish K S 1134a4924c71SGirish K S /* 1135577fb131SSeungwon Jeon * Activate High Speed or HS200 mode if supported. 1136577fb131SSeungwon Jeon */ 1137577fb131SSeungwon Jeon static int mmc_select_timing(struct mmc_card *card) 1138577fb131SSeungwon Jeon { 1139577fb131SSeungwon Jeon int err = 0; 1140577fb131SSeungwon Jeon 1141577fb131SSeungwon Jeon if ((card->csd.mmca_vsn < CSD_SPEC_VER_4 && 1142577fb131SSeungwon Jeon card->ext_csd.hs_max_dtr == 0)) 1143577fb131SSeungwon Jeon goto bus_speed; 1144577fb131SSeungwon Jeon 1145577fb131SSeungwon Jeon if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200) 1146577fb131SSeungwon Jeon err = mmc_select_hs200(card); 1147577fb131SSeungwon Jeon else if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS) 1148577fb131SSeungwon Jeon err = mmc_select_hs(card); 1149577fb131SSeungwon Jeon 1150577fb131SSeungwon Jeon if (err && err != -EBADMSG) 1151577fb131SSeungwon Jeon return err; 1152577fb131SSeungwon Jeon 1153577fb131SSeungwon Jeon if (err) { 1154577fb131SSeungwon Jeon pr_warn("%s: switch to %s failed\n", 1155577fb131SSeungwon Jeon mmc_card_hs(card) ? "high-speed" : 1156577fb131SSeungwon Jeon (mmc_card_hs200(card) ? "hs200" : ""), 1157577fb131SSeungwon Jeon mmc_hostname(card->host)); 1158577fb131SSeungwon Jeon err = 0; 1159577fb131SSeungwon Jeon } 1160577fb131SSeungwon Jeon 1161577fb131SSeungwon Jeon bus_speed: 1162577fb131SSeungwon Jeon /* 1163577fb131SSeungwon Jeon * Set the bus speed to the selected bus timing. 1164577fb131SSeungwon Jeon * If timing is not selected, backward compatible is the default. 1165577fb131SSeungwon Jeon */ 1166577fb131SSeungwon Jeon mmc_set_bus_speed(card); 1167577fb131SSeungwon Jeon return err; 1168577fb131SSeungwon Jeon } 1169577fb131SSeungwon Jeon 1170577fb131SSeungwon Jeon /* 1171577fb131SSeungwon Jeon * Execute tuning sequence to seek the proper bus operating 11720a5b6438SSeungwon Jeon * conditions for HS200 and HS400, which sends CMD21 to the device. 1173577fb131SSeungwon Jeon */ 1174577fb131SSeungwon Jeon static int mmc_hs200_tuning(struct mmc_card *card) 1175577fb131SSeungwon Jeon { 1176577fb131SSeungwon Jeon struct mmc_host *host = card->host; 1177577fb131SSeungwon Jeon int err = 0; 1178577fb131SSeungwon Jeon 11790a5b6438SSeungwon Jeon /* 11800a5b6438SSeungwon Jeon * Timing should be adjusted to the HS400 target 11810a5b6438SSeungwon Jeon * operation frequency for tuning process 11820a5b6438SSeungwon Jeon */ 11830a5b6438SSeungwon Jeon if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 && 11840a5b6438SSeungwon Jeon host->ios.bus_width == MMC_BUS_WIDTH_8) 11850a5b6438SSeungwon Jeon if (host->ops->prepare_hs400_tuning) 11860a5b6438SSeungwon Jeon host->ops->prepare_hs400_tuning(host, &host->ios); 11870a5b6438SSeungwon Jeon 1188577fb131SSeungwon Jeon if (host->ops->execute_tuning) { 1189577fb131SSeungwon Jeon mmc_host_clk_hold(host); 1190577fb131SSeungwon Jeon err = host->ops->execute_tuning(host, 1191577fb131SSeungwon Jeon MMC_SEND_TUNING_BLOCK_HS200); 1192577fb131SSeungwon Jeon mmc_host_clk_release(host); 1193577fb131SSeungwon Jeon 1194577fb131SSeungwon Jeon if (err) 1195577fb131SSeungwon Jeon pr_warn("%s: tuning execution failed\n", 1196577fb131SSeungwon Jeon mmc_hostname(host)); 1197577fb131SSeungwon Jeon } 1198577fb131SSeungwon Jeon 1199577fb131SSeungwon Jeon return err; 1200577fb131SSeungwon Jeon } 1201577fb131SSeungwon Jeon 1202577fb131SSeungwon Jeon /* 12036abaa0c9SPierre Ossman * Handle the detection and initialisation of a card. 12046abaa0c9SPierre Ossman * 12058769392bSDeepak Saxena * In the case of a resume, "oldcard" will contain the card 12066abaa0c9SPierre Ossman * we're trying to reinitialise. 12077ea239d9SPierre Ossman */ 12088c75deaeSPierre Ossman static int mmc_init_card(struct mmc_host *host, u32 ocr, 12096abaa0c9SPierre Ossman struct mmc_card *oldcard) 12107ea239d9SPierre Ossman { 12117ea239d9SPierre Ossman struct mmc_card *card; 1212577fb131SSeungwon Jeon int err; 12137ea239d9SPierre Ossman u32 cid[4]; 1214b676f039SPhilip Rakity u32 rocr; 121508ee80ccSPhilip Rakity u8 *ext_csd = NULL; 12167ea239d9SPierre Ossman 12177ea239d9SPierre Ossman BUG_ON(!host); 1218d84075c8SPierre Ossman WARN_ON(!host->claimed); 12197ea239d9SPierre Ossman 122044669034SStefan Nilsson XK /* Set correct bus mode for MMC before attempting init */ 122144669034SStefan Nilsson XK if (!mmc_host_is_spi(host)) 122244669034SStefan Nilsson XK mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); 122344669034SStefan Nilsson XK 12247ea239d9SPierre Ossman /* 12257ea239d9SPierre Ossman * Since we're changing the OCR value, we seem to 12267ea239d9SPierre Ossman * need to tell some cards to go back to the idle 12277ea239d9SPierre Ossman * state. We wait 1ms to give cards time to 12287ea239d9SPierre Ossman * respond. 1229c3805467SBalaji T K * mmc_go_idle is needed for eMMC that are asleep 12307ea239d9SPierre Ossman */ 12317ea239d9SPierre Ossman mmc_go_idle(host); 12327ea239d9SPierre Ossman 12337ea239d9SPierre Ossman /* The extra bit indicates that we support high capacity */ 1234b676f039SPhilip Rakity err = mmc_send_op_cond(host, ocr | (1 << 30), &rocr); 123517b0429dSPierre Ossman if (err) 12366abaa0c9SPierre Ossman goto err; 12377ea239d9SPierre Ossman 12387ea239d9SPierre Ossman /* 1239af517150SDavid Brownell * For SPI, enable CRC as appropriate. 1240af517150SDavid Brownell */ 1241af517150SDavid Brownell if (mmc_host_is_spi(host)) { 1242af517150SDavid Brownell err = mmc_spi_set_crc(host, use_spi_crc); 1243af517150SDavid Brownell if (err) 1244af517150SDavid Brownell goto err; 1245af517150SDavid Brownell } 1246af517150SDavid Brownell 1247af517150SDavid Brownell /* 12487ea239d9SPierre Ossman * Fetch CID from card. 12497ea239d9SPierre Ossman */ 1250af517150SDavid Brownell if (mmc_host_is_spi(host)) 1251af517150SDavid Brownell err = mmc_send_cid(host, cid); 1252af517150SDavid Brownell else 12537ea239d9SPierre Ossman err = mmc_all_send_cid(host, cid); 125417b0429dSPierre Ossman if (err) 12557ea239d9SPierre Ossman goto err; 12567ea239d9SPierre Ossman 12576abaa0c9SPierre Ossman if (oldcard) { 1258adf66a0dSPierre Ossman if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) { 1259adf66a0dSPierre Ossman err = -ENOENT; 12606abaa0c9SPierre Ossman goto err; 1261adf66a0dSPierre Ossman } 12626abaa0c9SPierre Ossman 12636abaa0c9SPierre Ossman card = oldcard; 12646abaa0c9SPierre Ossman } else { 12657ea239d9SPierre Ossman /* 12667ea239d9SPierre Ossman * Allocate card structure. 12677ea239d9SPierre Ossman */ 126851ec92e2SPierre Ossman card = mmc_alloc_card(host, &mmc_type); 1269adf66a0dSPierre Ossman if (IS_ERR(card)) { 1270adf66a0dSPierre Ossman err = PTR_ERR(card); 12717ea239d9SPierre Ossman goto err; 1272adf66a0dSPierre Ossman } 12737ea239d9SPierre Ossman 127469041150SUlf Hansson card->ocr = ocr; 12757ea239d9SPierre Ossman card->type = MMC_TYPE_MMC; 12767ea239d9SPierre Ossman card->rca = 1; 12777ea239d9SPierre Ossman memcpy(card->raw_cid, cid, sizeof(card->raw_cid)); 12786abaa0c9SPierre Ossman } 12797ea239d9SPierre Ossman 12807ea239d9SPierre Ossman /* 1281af517150SDavid Brownell * For native busses: set card RCA and quit open drain mode. 12827ea239d9SPierre Ossman */ 1283af517150SDavid Brownell if (!mmc_host_is_spi(host)) { 12847ea239d9SPierre Ossman err = mmc_set_relative_addr(card); 128517b0429dSPierre Ossman if (err) 12867ea239d9SPierre Ossman goto free_card; 12877ea239d9SPierre Ossman 12887ea239d9SPierre Ossman mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL); 1289af517150SDavid Brownell } 12907ea239d9SPierre Ossman 12916abaa0c9SPierre Ossman if (!oldcard) { 12927ea239d9SPierre Ossman /* 12937ea239d9SPierre Ossman * Fetch CSD from card. 12947ea239d9SPierre Ossman */ 12957ea239d9SPierre Ossman err = mmc_send_csd(card, card->raw_csd); 129617b0429dSPierre Ossman if (err) 12977ea239d9SPierre Ossman goto free_card; 12987ea239d9SPierre Ossman 1299bd766312SPierre Ossman err = mmc_decode_csd(card); 1300adf66a0dSPierre Ossman if (err) 1301bd766312SPierre Ossman goto free_card; 1302bd766312SPierre Ossman err = mmc_decode_cid(card); 1303adf66a0dSPierre Ossman if (err) 1304bd766312SPierre Ossman goto free_card; 13056abaa0c9SPierre Ossman } 13067ea239d9SPierre Ossman 13077ea239d9SPierre Ossman /* 13083d705d14SSascha Hauer * handling only for cards supporting DSR and hosts requesting 13093d705d14SSascha Hauer * DSR configuration 13103d705d14SSascha Hauer */ 13113d705d14SSascha Hauer if (card->csd.dsr_imp && host->dsr_req) 13123d705d14SSascha Hauer mmc_set_dsr(host); 13133d705d14SSascha Hauer 13143d705d14SSascha Hauer /* 131589a73cf5SPierre Ossman * Select card, as all following commands rely on that. 13167ea239d9SPierre Ossman */ 1317af517150SDavid Brownell if (!mmc_host_is_spi(host)) { 13187ea239d9SPierre Ossman err = mmc_select_card(card); 131917b0429dSPierre Ossman if (err) 13207ea239d9SPierre Ossman goto free_card; 1321af517150SDavid Brownell } 13227ea239d9SPierre Ossman 13236abaa0c9SPierre Ossman if (!oldcard) { 132489a73cf5SPierre Ossman /* 1325af517150SDavid Brownell * Fetch and process extended CSD. 132689a73cf5SPierre Ossman */ 132708ee80ccSPhilip Rakity 132808ee80ccSPhilip Rakity err = mmc_get_ext_csd(card, &ext_csd); 132908ee80ccSPhilip Rakity if (err) 133008ee80ccSPhilip Rakity goto free_card; 133108ee80ccSPhilip Rakity err = mmc_read_ext_csd(card, ext_csd); 133217b0429dSPierre Ossman if (err) 13337ea239d9SPierre Ossman goto free_card; 1334b676f039SPhilip Rakity 1335b676f039SPhilip Rakity /* If doing byte addressing, check if required to do sector 1336b676f039SPhilip Rakity * addressing. Handle the case of <2GB cards needing sector 1337b676f039SPhilip Rakity * addressing. See section 8.1 JEDEC Standard JED84-A441; 1338b676f039SPhilip Rakity * ocr register has bit 30 set for sector addressing. 1339b676f039SPhilip Rakity */ 1340b676f039SPhilip Rakity if (!(mmc_card_blockaddr(card)) && (rocr & (1<<30))) 1341b676f039SPhilip Rakity mmc_card_set_blockaddr(card); 1342b676f039SPhilip Rakity 1343dfe86cbaSAdrian Hunter /* Erase size depends on CSD and Extended CSD */ 1344dfe86cbaSAdrian Hunter mmc_set_erase_size(card); 13456abaa0c9SPierre Ossman } 13467ea239d9SPierre Ossman 13477ea239d9SPierre Ossman /* 1348709de99dSChuanxiao Dong * If enhanced_area_en is TRUE, host needs to enable ERASE_GRP_DEF 1349709de99dSChuanxiao Dong * bit. This bit will be lost every time after a reset or power off. 1350709de99dSChuanxiao Dong */ 135183bb24aaSAdrian Hunter if (card->ext_csd.enhanced_area_en || 135283bb24aaSAdrian Hunter (card->ext_csd.rev >= 3 && (host->caps2 & MMC_CAP2_HC_ERASE_SZ))) { 1353709de99dSChuanxiao Dong err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1354b23cf0bdSSeungwon Jeon EXT_CSD_ERASE_GROUP_DEF, 1, 1355b23cf0bdSSeungwon Jeon card->ext_csd.generic_cmd6_time); 1356709de99dSChuanxiao Dong 1357709de99dSChuanxiao Dong if (err && err != -EBADMSG) 1358709de99dSChuanxiao Dong goto free_card; 1359709de99dSChuanxiao Dong 1360709de99dSChuanxiao Dong if (err) { 1361709de99dSChuanxiao Dong err = 0; 1362709de99dSChuanxiao Dong /* 1363709de99dSChuanxiao Dong * Just disable enhanced area off & sz 1364709de99dSChuanxiao Dong * will try to enable ERASE_GROUP_DEF 1365709de99dSChuanxiao Dong * during next time reinit 1366709de99dSChuanxiao Dong */ 1367709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset = -EINVAL; 1368709de99dSChuanxiao Dong card->ext_csd.enhanced_area_size = -EINVAL; 1369709de99dSChuanxiao Dong } else { 1370709de99dSChuanxiao Dong card->ext_csd.erase_group_def = 1; 1371709de99dSChuanxiao Dong /* 1372709de99dSChuanxiao Dong * enable ERASE_GRP_DEF successfully. 1373709de99dSChuanxiao Dong * This will affect the erase size, so 1374709de99dSChuanxiao Dong * here need to reset erase size 1375709de99dSChuanxiao Dong */ 1376709de99dSChuanxiao Dong mmc_set_erase_size(card); 1377709de99dSChuanxiao Dong } 1378709de99dSChuanxiao Dong } 1379709de99dSChuanxiao Dong 1380709de99dSChuanxiao Dong /* 138141e2a489SPhilip Rakity * Ensure eMMC user default partition is enabled 138241e2a489SPhilip Rakity */ 1383371a689fSAndrei Warkentin if (card->ext_csd.part_config & EXT_CSD_PART_CONFIG_ACC_MASK) { 1384371a689fSAndrei Warkentin card->ext_csd.part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK; 1385371a689fSAndrei Warkentin err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONFIG, 1386371a689fSAndrei Warkentin card->ext_csd.part_config, 1387371a689fSAndrei Warkentin card->ext_csd.part_time); 1388371a689fSAndrei Warkentin if (err && err != -EBADMSG) 1389371a689fSAndrei Warkentin goto free_card; 139041e2a489SPhilip Rakity } 139141e2a489SPhilip Rakity 139241e2a489SPhilip Rakity /* 139343235679SUlf Hansson * Enable power_off_notification byte in the ext_csd register 1394bec8726aSGirish K S */ 139543235679SUlf Hansson if (card->ext_csd.rev >= 6) { 1396bec8726aSGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1397bec8726aSGirish K S EXT_CSD_POWER_OFF_NOTIFICATION, 1398bec8726aSGirish K S EXT_CSD_POWER_ON, 1399bec8726aSGirish K S card->ext_csd.generic_cmd6_time); 1400bec8726aSGirish K S if (err && err != -EBADMSG) 1401bec8726aSGirish K S goto free_card; 1402bec8726aSGirish K S 140396a85d54SGirish K S /* 140496a85d54SGirish K S * The err can be -EBADMSG or 0, 140596a85d54SGirish K S * so check for success and update the flag 140696a85d54SGirish K S */ 1407bec8726aSGirish K S if (!err) 1408e6c08586SUlf Hansson card->ext_csd.power_off_notification = EXT_CSD_POWER_ON; 140996a85d54SGirish K S } 1410bec8726aSGirish K S 1411bec8726aSGirish K S /* 1412577fb131SSeungwon Jeon * Select timing interface 141389a73cf5SPierre Ossman */ 1414577fb131SSeungwon Jeon err = mmc_select_timing(card); 1415577fb131SSeungwon Jeon if (err) 141689a73cf5SPierre Ossman goto free_card; 141789a73cf5SPierre Ossman 1418a4924c71SGirish K S if (mmc_card_hs200(card)) { 1419577fb131SSeungwon Jeon err = mmc_hs200_tuning(card); 14204c4cb171SPhilip Rakity if (err) 14214c4cb171SPhilip Rakity goto err; 14220a5b6438SSeungwon Jeon 14230a5b6438SSeungwon Jeon err = mmc_select_hs400(card); 14240a5b6438SSeungwon Jeon if (err) 14250a5b6438SSeungwon Jeon goto err; 1426577fb131SSeungwon Jeon } else if (mmc_card_hs(card)) { 1427577fb131SSeungwon Jeon /* Select the desired bus width optionally */ 1428577fb131SSeungwon Jeon err = mmc_select_bus_width(card); 1429577fb131SSeungwon Jeon if (!IS_ERR_VALUE(err)) { 1430577fb131SSeungwon Jeon err = mmc_select_hs_ddr(card); 1431577fb131SSeungwon Jeon if (err) 1432577fb131SSeungwon Jeon goto err; 143389a73cf5SPierre Ossman } 1434ef0b27d4SAdrian Hunter } 143589a73cf5SPierre Ossman 1436881d1c25SSeungwon Jeon /* 14372385049dSSeungwon Jeon * Choose the power class with selected bus interface 14382385049dSSeungwon Jeon */ 14392385049dSSeungwon Jeon mmc_select_powerclass(card); 14402385049dSSeungwon Jeon 14412385049dSSeungwon Jeon /* 144252d0974eSSubhash Jadavani * Enable HPI feature (if supported) 144352d0974eSSubhash Jadavani */ 144452d0974eSSubhash Jadavani if (card->ext_csd.hpi) { 144552d0974eSSubhash Jadavani err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 144652d0974eSSubhash Jadavani EXT_CSD_HPI_MGMT, 1, 144752d0974eSSubhash Jadavani card->ext_csd.generic_cmd6_time); 144852d0974eSSubhash Jadavani if (err && err != -EBADMSG) 144952d0974eSSubhash Jadavani goto free_card; 145052d0974eSSubhash Jadavani if (err) { 145152d0974eSSubhash Jadavani pr_warning("%s: Enabling HPI failed\n", 145252d0974eSSubhash Jadavani mmc_hostname(card->host)); 145352d0974eSSubhash Jadavani err = 0; 145452d0974eSSubhash Jadavani } else 145552d0974eSSubhash Jadavani card->ext_csd.hpi_en = 1; 145652d0974eSSubhash Jadavani } 145752d0974eSSubhash Jadavani 145852d0974eSSubhash Jadavani /* 1459881d1c25SSeungwon Jeon * If cache size is higher than 0, this indicates 1460881d1c25SSeungwon Jeon * the existence of cache and it can be turned on. 1461881d1c25SSeungwon Jeon */ 14627536d3f8SUlf Hansson if (card->ext_csd.cache_size > 0) { 1463881d1c25SSeungwon Jeon err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 14648bc0678bSSeungwon Jeon EXT_CSD_CACHE_CTRL, 1, 14658bc0678bSSeungwon Jeon card->ext_csd.generic_cmd6_time); 1466881d1c25SSeungwon Jeon if (err && err != -EBADMSG) 1467881d1c25SSeungwon Jeon goto free_card; 1468881d1c25SSeungwon Jeon 1469881d1c25SSeungwon Jeon /* 1470881d1c25SSeungwon Jeon * Only if no error, cache is turned on successfully. 1471881d1c25SSeungwon Jeon */ 14728bc0678bSSeungwon Jeon if (err) { 14738bc0678bSSeungwon Jeon pr_warning("%s: Cache is supported, " 14748bc0678bSSeungwon Jeon "but failed to turn on (%d)\n", 14758bc0678bSSeungwon Jeon mmc_hostname(card->host), err); 14768bc0678bSSeungwon Jeon card->ext_csd.cache_ctrl = 0; 14778bc0678bSSeungwon Jeon err = 0; 14788bc0678bSSeungwon Jeon } else { 14798bc0678bSSeungwon Jeon card->ext_csd.cache_ctrl = 1; 14808bc0678bSSeungwon Jeon } 1481881d1c25SSeungwon Jeon } 1482881d1c25SSeungwon Jeon 1483abd9ac14SSeungwon Jeon /* 1484abd9ac14SSeungwon Jeon * The mandatory minimum values are defined for packed command. 1485abd9ac14SSeungwon Jeon * read: 5, write: 3 1486abd9ac14SSeungwon Jeon */ 1487abd9ac14SSeungwon Jeon if (card->ext_csd.max_packed_writes >= 3 && 1488abd9ac14SSeungwon Jeon card->ext_csd.max_packed_reads >= 5 && 1489abd9ac14SSeungwon Jeon host->caps2 & MMC_CAP2_PACKED_CMD) { 1490abd9ac14SSeungwon Jeon err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1491abd9ac14SSeungwon Jeon EXT_CSD_EXP_EVENTS_CTRL, 1492abd9ac14SSeungwon Jeon EXT_CSD_PACKED_EVENT_EN, 1493abd9ac14SSeungwon Jeon card->ext_csd.generic_cmd6_time); 1494abd9ac14SSeungwon Jeon if (err && err != -EBADMSG) 1495abd9ac14SSeungwon Jeon goto free_card; 1496abd9ac14SSeungwon Jeon if (err) { 1497abd9ac14SSeungwon Jeon pr_warn("%s: Enabling packed event failed\n", 1498abd9ac14SSeungwon Jeon mmc_hostname(card->host)); 1499abd9ac14SSeungwon Jeon card->ext_csd.packed_event_en = 0; 1500abd9ac14SSeungwon Jeon err = 0; 1501abd9ac14SSeungwon Jeon } else { 1502abd9ac14SSeungwon Jeon card->ext_csd.packed_event_en = 1; 1503abd9ac14SSeungwon Jeon } 1504abd9ac14SSeungwon Jeon } 1505abd9ac14SSeungwon Jeon 15066abaa0c9SPierre Ossman if (!oldcard) 15077ea239d9SPierre Ossman host->card = card; 15087ea239d9SPierre Ossman 150908ee80ccSPhilip Rakity mmc_free_ext_csd(ext_csd); 151017b0429dSPierre Ossman return 0; 15116abaa0c9SPierre Ossman 15126abaa0c9SPierre Ossman free_card: 15136abaa0c9SPierre Ossman if (!oldcard) 15146abaa0c9SPierre Ossman mmc_remove_card(card); 15156abaa0c9SPierre Ossman err: 151608ee80ccSPhilip Rakity mmc_free_ext_csd(ext_csd); 15176abaa0c9SPierre Ossman 1518adf66a0dSPierre Ossman return err; 15196abaa0c9SPierre Ossman } 15206abaa0c9SPierre Ossman 152107a68216SUlf Hansson static int mmc_can_sleep(struct mmc_card *card) 152207a68216SUlf Hansson { 152307a68216SUlf Hansson return (card && card->ext_csd.rev >= 3); 152407a68216SUlf Hansson } 152507a68216SUlf Hansson 152607a68216SUlf Hansson static int mmc_sleep(struct mmc_host *host) 152707a68216SUlf Hansson { 152807a68216SUlf Hansson struct mmc_command cmd = {0}; 152907a68216SUlf Hansson struct mmc_card *card = host->card; 1530cb962e04SUlf Hansson unsigned int timeout_ms = DIV_ROUND_UP(card->ext_csd.sa_timeout, 10000); 153107a68216SUlf Hansson int err; 153207a68216SUlf Hansson 153307a68216SUlf Hansson err = mmc_deselect_cards(host); 153407a68216SUlf Hansson if (err) 153507a68216SUlf Hansson return err; 153607a68216SUlf Hansson 153707a68216SUlf Hansson cmd.opcode = MMC_SLEEP_AWAKE; 153807a68216SUlf Hansson cmd.arg = card->rca << 16; 153907a68216SUlf Hansson cmd.arg |= 1 << 15; 154007a68216SUlf Hansson 1541cb962e04SUlf Hansson /* 1542cb962e04SUlf Hansson * If the max_busy_timeout of the host is specified, validate it against 1543cb962e04SUlf Hansson * the sleep cmd timeout. A failure means we need to prevent the host 1544cb962e04SUlf Hansson * from doing hw busy detection, which is done by converting to a R1 1545cb962e04SUlf Hansson * response instead of a R1B. 1546cb962e04SUlf Hansson */ 1547cb962e04SUlf Hansson if (host->max_busy_timeout && (timeout_ms > host->max_busy_timeout)) { 1548cb962e04SUlf Hansson cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; 1549cb962e04SUlf Hansson } else { 155007a68216SUlf Hansson cmd.flags = MMC_RSP_R1B | MMC_CMD_AC; 1551cb962e04SUlf Hansson cmd.busy_timeout = timeout_ms; 1552cb962e04SUlf Hansson } 1553cb962e04SUlf Hansson 155407a68216SUlf Hansson err = mmc_wait_for_cmd(host, &cmd, 0); 155507a68216SUlf Hansson if (err) 155607a68216SUlf Hansson return err; 155707a68216SUlf Hansson 155807a68216SUlf Hansson /* 155907a68216SUlf Hansson * If the host does not wait while the card signals busy, then we will 156007a68216SUlf Hansson * will have to wait the sleep/awake timeout. Note, we cannot use the 156107a68216SUlf Hansson * SEND_STATUS command to poll the status because that command (and most 156207a68216SUlf Hansson * others) is invalid while the card sleeps. 156307a68216SUlf Hansson */ 1564cb962e04SUlf Hansson if (!cmd.busy_timeout || !(host->caps & MMC_CAP_WAIT_WHILE_BUSY)) 1565cb962e04SUlf Hansson mmc_delay(timeout_ms); 156607a68216SUlf Hansson 156707a68216SUlf Hansson return err; 156807a68216SUlf Hansson } 156907a68216SUlf Hansson 1570e6c08586SUlf Hansson static int mmc_can_poweroff_notify(const struct mmc_card *card) 1571e6c08586SUlf Hansson { 1572e6c08586SUlf Hansson return card && 1573e6c08586SUlf Hansson mmc_card_mmc(card) && 1574e6c08586SUlf Hansson (card->ext_csd.power_off_notification == EXT_CSD_POWER_ON); 1575e6c08586SUlf Hansson } 1576e6c08586SUlf Hansson 1577e6c08586SUlf Hansson static int mmc_poweroff_notify(struct mmc_card *card, unsigned int notify_type) 1578e6c08586SUlf Hansson { 1579e6c08586SUlf Hansson unsigned int timeout = card->ext_csd.generic_cmd6_time; 1580e6c08586SUlf Hansson int err; 1581e6c08586SUlf Hansson 1582e6c08586SUlf Hansson /* Use EXT_CSD_POWER_OFF_SHORT as default notification type. */ 1583e6c08586SUlf Hansson if (notify_type == EXT_CSD_POWER_OFF_LONG) 1584e6c08586SUlf Hansson timeout = card->ext_csd.power_off_longtime; 1585e6c08586SUlf Hansson 1586878e200bSUlf Hansson err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1587e6c08586SUlf Hansson EXT_CSD_POWER_OFF_NOTIFICATION, 15884509f847SUlf Hansson notify_type, timeout, true, false, false); 1589e6c08586SUlf Hansson if (err) 1590e6c08586SUlf Hansson pr_err("%s: Power Off Notification timed out, %u\n", 1591e6c08586SUlf Hansson mmc_hostname(card->host), timeout); 1592e6c08586SUlf Hansson 1593e6c08586SUlf Hansson /* Disable the power off notification after the switch operation. */ 1594e6c08586SUlf Hansson card->ext_csd.power_off_notification = EXT_CSD_NO_POWER_NOTIFICATION; 1595e6c08586SUlf Hansson 1596e6c08586SUlf Hansson return err; 1597e6c08586SUlf Hansson } 1598e6c08586SUlf Hansson 15996abaa0c9SPierre Ossman /* 16006abaa0c9SPierre Ossman * Host is being removed. Free up the current card. 16016abaa0c9SPierre Ossman */ 16026abaa0c9SPierre Ossman static void mmc_remove(struct mmc_host *host) 16036abaa0c9SPierre Ossman { 16046abaa0c9SPierre Ossman BUG_ON(!host); 16056abaa0c9SPierre Ossman BUG_ON(!host->card); 16066abaa0c9SPierre Ossman 16076abaa0c9SPierre Ossman mmc_remove_card(host->card); 16086abaa0c9SPierre Ossman host->card = NULL; 16096abaa0c9SPierre Ossman } 16106abaa0c9SPierre Ossman 16116abaa0c9SPierre Ossman /* 1612d3049504SAdrian Hunter * Card detection - card is alive. 1613d3049504SAdrian Hunter */ 1614d3049504SAdrian Hunter static int mmc_alive(struct mmc_host *host) 1615d3049504SAdrian Hunter { 1616d3049504SAdrian Hunter return mmc_send_status(host->card, NULL); 1617d3049504SAdrian Hunter } 1618d3049504SAdrian Hunter 1619d3049504SAdrian Hunter /* 16206abaa0c9SPierre Ossman * Card detection callback from host. 16216abaa0c9SPierre Ossman */ 16226abaa0c9SPierre Ossman static void mmc_detect(struct mmc_host *host) 16236abaa0c9SPierre Ossman { 16246abaa0c9SPierre Ossman int err; 16256abaa0c9SPierre Ossman 16266abaa0c9SPierre Ossman BUG_ON(!host); 16276abaa0c9SPierre Ossman BUG_ON(!host->card); 16286abaa0c9SPierre Ossman 1629e94cfef6SUlf Hansson mmc_get_card(host->card); 16306abaa0c9SPierre Ossman 16316abaa0c9SPierre Ossman /* 16326abaa0c9SPierre Ossman * Just check if our card has been removed. 16336abaa0c9SPierre Ossman */ 1634d3049504SAdrian Hunter err = _mmc_detect_card_removed(host); 16356abaa0c9SPierre Ossman 1636e94cfef6SUlf Hansson mmc_put_card(host->card); 16377ea239d9SPierre Ossman 163817b0429dSPierre Ossman if (err) { 16394101c16aSPierre Ossman mmc_remove(host); 16406abaa0c9SPierre Ossman 16416abaa0c9SPierre Ossman mmc_claim_host(host); 16426abaa0c9SPierre Ossman mmc_detach_bus(host); 16437f7e4129SUlf Hansson mmc_power_off(host); 16446abaa0c9SPierre Ossman mmc_release_host(host); 16456abaa0c9SPierre Ossman } 16466abaa0c9SPierre Ossman } 16476abaa0c9SPierre Ossman 164803d071fcSUlf Hansson static int _mmc_suspend(struct mmc_host *host, bool is_suspend) 16496abaa0c9SPierre Ossman { 1650c3805467SBalaji T K int err = 0; 165103d071fcSUlf Hansson unsigned int notify_type = is_suspend ? EXT_CSD_POWER_OFF_SHORT : 165203d071fcSUlf Hansson EXT_CSD_POWER_OFF_LONG; 1653c3805467SBalaji T K 16546abaa0c9SPierre Ossman BUG_ON(!host); 16556abaa0c9SPierre Ossman BUG_ON(!host->card); 16566abaa0c9SPierre Ossman 16576abaa0c9SPierre Ossman mmc_claim_host(host); 1658881d926dSMaya Erez 16599ec775f7SUlf Hansson if (mmc_card_suspended(host->card)) 16609ec775f7SUlf Hansson goto out; 16619ec775f7SUlf Hansson 166239b9431bSUlf Hansson if (mmc_card_doing_bkops(host->card)) { 166339b9431bSUlf Hansson err = mmc_stop_bkops(host->card); 166439b9431bSUlf Hansson if (err) 166539b9431bSUlf Hansson goto out; 166639b9431bSUlf Hansson } 166739b9431bSUlf Hansson 166810e5d965SUlf Hansson err = mmc_flush_cache(host->card); 1669881d926dSMaya Erez if (err) 1670881d926dSMaya Erez goto out; 1671881d926dSMaya Erez 167243235679SUlf Hansson if (mmc_can_poweroff_notify(host->card) && 167353275c21SUlf Hansson ((host->caps2 & MMC_CAP2_FULL_PWR_CYCLE) || !is_suspend)) 167403d071fcSUlf Hansson err = mmc_poweroff_notify(host->card, notify_type); 167507a68216SUlf Hansson else if (mmc_can_sleep(host->card)) 167607a68216SUlf Hansson err = mmc_sleep(host); 1677e6c08586SUlf Hansson else if (!mmc_host_is_spi(host)) 167885e727edSJaehoon Chung err = mmc_deselect_cards(host); 167995cdfb72SNicolas Pitre 16809ec775f7SUlf Hansson if (!err) { 168174590263SUlf Hansson mmc_power_off(host); 16829ec775f7SUlf Hansson mmc_card_set_suspended(host->card); 16839ec775f7SUlf Hansson } 1684881d926dSMaya Erez out: 1685881d926dSMaya Erez mmc_release_host(host); 1686c3805467SBalaji T K return err; 16876abaa0c9SPierre Ossman } 16886abaa0c9SPierre Ossman 16896abaa0c9SPierre Ossman /* 16900cb403a2SUlf Hansson * Suspend callback 169103d071fcSUlf Hansson */ 169203d071fcSUlf Hansson static int mmc_suspend(struct mmc_host *host) 169303d071fcSUlf Hansson { 16940cb403a2SUlf Hansson int err; 16950cb403a2SUlf Hansson 16960cb403a2SUlf Hansson err = _mmc_suspend(host, true); 16970cb403a2SUlf Hansson if (!err) { 16980cb403a2SUlf Hansson pm_runtime_disable(&host->card->dev); 16990cb403a2SUlf Hansson pm_runtime_set_suspended(&host->card->dev); 17000cb403a2SUlf Hansson } 17010cb403a2SUlf Hansson 17020cb403a2SUlf Hansson return err; 170303d071fcSUlf Hansson } 170403d071fcSUlf Hansson 170503d071fcSUlf Hansson /* 17066abaa0c9SPierre Ossman * This function tries to determine if the same card is still present 17076abaa0c9SPierre Ossman * and, if so, restore all state to it. 17086abaa0c9SPierre Ossman */ 17090cb403a2SUlf Hansson static int _mmc_resume(struct mmc_host *host) 17106abaa0c9SPierre Ossman { 17119ec775f7SUlf Hansson int err = 0; 17126abaa0c9SPierre Ossman 17136abaa0c9SPierre Ossman BUG_ON(!host); 17146abaa0c9SPierre Ossman BUG_ON(!host->card); 17156abaa0c9SPierre Ossman 17166abaa0c9SPierre Ossman mmc_claim_host(host); 17179ec775f7SUlf Hansson 17189ec775f7SUlf Hansson if (!mmc_card_suspended(host->card)) 17199ec775f7SUlf Hansson goto out; 17209ec775f7SUlf Hansson 172169041150SUlf Hansson mmc_power_up(host, host->card->ocr); 172269041150SUlf Hansson err = mmc_init_card(host, host->card->ocr, host->card); 17239ec775f7SUlf Hansson mmc_card_clr_suspended(host->card); 17242986d0bfSPierre Ossman 17259ec775f7SUlf Hansson out: 17269ec775f7SUlf Hansson mmc_release_host(host); 172795cdfb72SNicolas Pitre return err; 17286abaa0c9SPierre Ossman } 17296abaa0c9SPierre Ossman 17309ec775f7SUlf Hansson /* 17319ec775f7SUlf Hansson * Shutdown callback 17329ec775f7SUlf Hansson */ 17339ec775f7SUlf Hansson static int mmc_shutdown(struct mmc_host *host) 17349ec775f7SUlf Hansson { 17359ec775f7SUlf Hansson int err = 0; 17369ec775f7SUlf Hansson 17379ec775f7SUlf Hansson /* 17389ec775f7SUlf Hansson * In a specific case for poweroff notify, we need to resume the card 17399ec775f7SUlf Hansson * before we can shutdown it properly. 17409ec775f7SUlf Hansson */ 17419ec775f7SUlf Hansson if (mmc_can_poweroff_notify(host->card) && 17429ec775f7SUlf Hansson !(host->caps2 & MMC_CAP2_FULL_PWR_CYCLE)) 17430cb403a2SUlf Hansson err = _mmc_resume(host); 17449ec775f7SUlf Hansson 17459ec775f7SUlf Hansson if (!err) 17469ec775f7SUlf Hansson err = _mmc_suspend(host, false); 17479ec775f7SUlf Hansson 17489ec775f7SUlf Hansson return err; 17499ec775f7SUlf Hansson } 1750c4d770d7SUlf Hansson 1751c4d770d7SUlf Hansson /* 17520cb403a2SUlf Hansson * Callback for resume. 17530cb403a2SUlf Hansson */ 17540cb403a2SUlf Hansson static int mmc_resume(struct mmc_host *host) 17550cb403a2SUlf Hansson { 17564d223782SUlf Hansson int err = 0; 17570cb403a2SUlf Hansson 17584d223782SUlf Hansson if (!(host->caps & MMC_CAP_RUNTIME_RESUME)) { 17590cb403a2SUlf Hansson err = _mmc_resume(host); 17600cb403a2SUlf Hansson pm_runtime_set_active(&host->card->dev); 17610cb403a2SUlf Hansson pm_runtime_mark_last_busy(&host->card->dev); 17624d223782SUlf Hansson } 17630cb403a2SUlf Hansson pm_runtime_enable(&host->card->dev); 17640cb403a2SUlf Hansson 17650cb403a2SUlf Hansson return err; 17660cb403a2SUlf Hansson } 17670cb403a2SUlf Hansson 17680cb403a2SUlf Hansson /* 1769c4d770d7SUlf Hansson * Callback for runtime_suspend. 1770c4d770d7SUlf Hansson */ 1771c4d770d7SUlf Hansson static int mmc_runtime_suspend(struct mmc_host *host) 1772c4d770d7SUlf Hansson { 1773c4d770d7SUlf Hansson int err; 1774c4d770d7SUlf Hansson 1775c4d770d7SUlf Hansson if (!(host->caps & MMC_CAP_AGGRESSIVE_PM)) 1776c4d770d7SUlf Hansson return 0; 1777c4d770d7SUlf Hansson 17780cb403a2SUlf Hansson err = _mmc_suspend(host, true); 17790cc81a8cSUlf Hansson if (err) 1780c4d770d7SUlf Hansson pr_err("%s: error %d doing aggessive suspend\n", 1781c4d770d7SUlf Hansson mmc_hostname(host), err); 1782c4d770d7SUlf Hansson 1783c4d770d7SUlf Hansson return err; 1784c4d770d7SUlf Hansson } 1785c4d770d7SUlf Hansson 1786c4d770d7SUlf Hansson /* 1787c4d770d7SUlf Hansson * Callback for runtime_resume. 1788c4d770d7SUlf Hansson */ 1789c4d770d7SUlf Hansson static int mmc_runtime_resume(struct mmc_host *host) 1790c4d770d7SUlf Hansson { 1791c4d770d7SUlf Hansson int err; 1792c4d770d7SUlf Hansson 17934d223782SUlf Hansson if (!(host->caps & (MMC_CAP_AGGRESSIVE_PM | MMC_CAP_RUNTIME_RESUME))) 1794c4d770d7SUlf Hansson return 0; 1795c4d770d7SUlf Hansson 17960cb403a2SUlf Hansson err = _mmc_resume(host); 1797c4d770d7SUlf Hansson if (err) 1798c4d770d7SUlf Hansson pr_err("%s: error %d doing aggessive resume\n", 1799c4d770d7SUlf Hansson mmc_hostname(host), err); 1800c4d770d7SUlf Hansson 1801c4d770d7SUlf Hansson return 0; 1802c4d770d7SUlf Hansson } 1803c4d770d7SUlf Hansson 180412ae637fSOhad Ben-Cohen static int mmc_power_restore(struct mmc_host *host) 1805eae1aeeeSAdrian Hunter { 180612ae637fSOhad Ben-Cohen int ret; 180712ae637fSOhad Ben-Cohen 1808eae1aeeeSAdrian Hunter mmc_claim_host(host); 180969041150SUlf Hansson ret = mmc_init_card(host, host->card->ocr, host->card); 1810eae1aeeeSAdrian Hunter mmc_release_host(host); 181112ae637fSOhad Ben-Cohen 181212ae637fSOhad Ben-Cohen return ret; 1813eae1aeeeSAdrian Hunter } 1814eae1aeeeSAdrian Hunter 18159feae246SAdrian Hunter static const struct mmc_bus_ops mmc_ops = { 18169feae246SAdrian Hunter .remove = mmc_remove, 18179feae246SAdrian Hunter .detect = mmc_detect, 18189feae246SAdrian Hunter .suspend = mmc_suspend, 18199feae246SAdrian Hunter .resume = mmc_resume, 1820c4d770d7SUlf Hansson .runtime_suspend = mmc_runtime_suspend, 1821c4d770d7SUlf Hansson .runtime_resume = mmc_runtime_resume, 1822eae1aeeeSAdrian Hunter .power_restore = mmc_power_restore, 1823d3049504SAdrian Hunter .alive = mmc_alive, 1824486fdbbcSUlf Hansson .shutdown = mmc_shutdown, 18259feae246SAdrian Hunter }; 18269feae246SAdrian Hunter 18276abaa0c9SPierre Ossman /* 18286abaa0c9SPierre Ossman * Starting point for MMC card init. 18296abaa0c9SPierre Ossman */ 1830807e8e40SAndy Ross int mmc_attach_mmc(struct mmc_host *host) 18316abaa0c9SPierre Ossman { 18326abaa0c9SPierre Ossman int err; 183369041150SUlf Hansson u32 ocr, rocr; 18346abaa0c9SPierre Ossman 18356abaa0c9SPierre Ossman BUG_ON(!host); 1836d84075c8SPierre Ossman WARN_ON(!host->claimed); 18376abaa0c9SPierre Ossman 183844669034SStefan Nilsson XK /* Set correct bus mode for MMC before attempting attach */ 183944669034SStefan Nilsson XK if (!mmc_host_is_spi(host)) 184044669034SStefan Nilsson XK mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); 184144669034SStefan Nilsson XK 1842807e8e40SAndy Ross err = mmc_send_op_cond(host, 0, &ocr); 1843807e8e40SAndy Ross if (err) 1844807e8e40SAndy Ross return err; 1845807e8e40SAndy Ross 18462501c917SUlf Hansson mmc_attach_bus(host, &mmc_ops); 18478f230f45STakashi Iwai if (host->ocr_avail_mmc) 18488f230f45STakashi Iwai host->ocr_avail = host->ocr_avail_mmc; 18496abaa0c9SPierre Ossman 18506abaa0c9SPierre Ossman /* 1851af517150SDavid Brownell * We need to get OCR a different way for SPI. 1852af517150SDavid Brownell */ 1853af517150SDavid Brownell if (mmc_host_is_spi(host)) { 1854af517150SDavid Brownell err = mmc_spi_read_ocr(host, 1, &ocr); 1855af517150SDavid Brownell if (err) 1856af517150SDavid Brownell goto err; 1857af517150SDavid Brownell } 1858af517150SDavid Brownell 185969041150SUlf Hansson rocr = mmc_select_voltage(host, ocr); 18606abaa0c9SPierre Ossman 18616abaa0c9SPierre Ossman /* 18626abaa0c9SPierre Ossman * Can we support the voltage of the card? 18636abaa0c9SPierre Ossman */ 186469041150SUlf Hansson if (!rocr) { 1865109b5bedSPierre Ossman err = -EINVAL; 18666abaa0c9SPierre Ossman goto err; 1867109b5bedSPierre Ossman } 18686abaa0c9SPierre Ossman 18696abaa0c9SPierre Ossman /* 18706abaa0c9SPierre Ossman * Detect and init the card. 18716abaa0c9SPierre Ossman */ 187269041150SUlf Hansson err = mmc_init_card(host, rocr, NULL); 187317b0429dSPierre Ossman if (err) 18746abaa0c9SPierre Ossman goto err; 18756abaa0c9SPierre Ossman 18766abaa0c9SPierre Ossman mmc_release_host(host); 18774101c16aSPierre Ossman err = mmc_add_card(host->card); 1878807e8e40SAndy Ross mmc_claim_host(host); 18797ea239d9SPierre Ossman if (err) 18802986d0bfSPierre Ossman goto remove_card; 18817ea239d9SPierre Ossman 18827ea239d9SPierre Ossman return 0; 18837ea239d9SPierre Ossman 18842986d0bfSPierre Ossman remove_card: 1885807e8e40SAndy Ross mmc_release_host(host); 18866abaa0c9SPierre Ossman mmc_remove_card(host->card); 18872986d0bfSPierre Ossman mmc_claim_host(host); 1888807e8e40SAndy Ross host->card = NULL; 18897ea239d9SPierre Ossman err: 18907ea239d9SPierre Ossman mmc_detach_bus(host); 18917ea239d9SPierre Ossman 1892a3c76eb9SGirish K S pr_err("%s: error %d whilst initialising MMC card\n", 1893109b5bedSPierre Ossman mmc_hostname(host), err); 1894109b5bedSPierre Ossman 1895adf66a0dSPierre Ossman return err; 18967ea239d9SPierre Ossman } 1897