1d2912cb1SThomas Gleixner // SPDX-License-Identifier: GPL-2.0-only 27ea239d9SPierre Ossman /* 370f10482SPierre Ossman * linux/drivers/mmc/core/sd.c 47ea239d9SPierre Ossman * 57ea239d9SPierre Ossman * Copyright (C) 2003-2004 Russell King, All Rights Reserved. 67ea239d9SPierre Ossman * SD support Copyright (C) 2004 Ian Molton, All Rights Reserved. 77ea239d9SPierre Ossman * Copyright (C) 2005-2007 Pierre Ossman, All Rights Reserved. 87ea239d9SPierre Ossman */ 97ea239d9SPierre Ossman 107ea239d9SPierre Ossman #include <linux/err.h> 119288cac0SWolfram Sang #include <linux/sizes.h> 125a0e3ad6STejun Heo #include <linux/slab.h> 130205a904SPaul Gortmaker #include <linux/stat.h> 140cb403a2SUlf Hansson #include <linux/pm_runtime.h> 157ea239d9SPierre Ossman 167ea239d9SPierre Ossman #include <linux/mmc/host.h> 177ea239d9SPierre Ossman #include <linux/mmc/card.h> 187ea239d9SPierre Ossman #include <linux/mmc/mmc.h> 193373c0aeSPierre Ossman #include <linux/mmc/sd.h> 207ea239d9SPierre Ossman 217ea239d9SPierre Ossman #include "core.h" 224facdde1SUlf Hansson #include "card.h" 235857b29bSUlf Hansson #include "host.h" 244101c16aSPierre Ossman #include "bus.h" 257ea239d9SPierre Ossman #include "mmc_ops.h" 26ce101496SMark Brown #include "sd.h" 277ea239d9SPierre Ossman #include "sd_ops.h" 287ea239d9SPierre Ossman 297ea239d9SPierre Ossman static const unsigned int tran_exp[] = { 307ea239d9SPierre Ossman 10000, 100000, 1000000, 10000000, 317ea239d9SPierre Ossman 0, 0, 0, 0 327ea239d9SPierre Ossman }; 337ea239d9SPierre Ossman 347ea239d9SPierre Ossman static const unsigned char tran_mant[] = { 357ea239d9SPierre Ossman 0, 10, 12, 13, 15, 20, 25, 30, 367ea239d9SPierre Ossman 35, 40, 45, 50, 55, 60, 70, 80, 377ea239d9SPierre Ossman }; 387ea239d9SPierre Ossman 394406ae21SShawn Lin static const unsigned int taac_exp[] = { 407ea239d9SPierre Ossman 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, 417ea239d9SPierre Ossman }; 427ea239d9SPierre Ossman 434406ae21SShawn Lin static const unsigned int taac_mant[] = { 447ea239d9SPierre Ossman 0, 10, 12, 13, 15, 20, 25, 30, 457ea239d9SPierre Ossman 35, 40, 45, 50, 55, 60, 70, 80, 467ea239d9SPierre Ossman }; 477ea239d9SPierre Ossman 489288cac0SWolfram Sang static const unsigned int sd_au_size[] = { 499288cac0SWolfram Sang 0, SZ_16K / 512, SZ_32K / 512, SZ_64K / 512, 509288cac0SWolfram Sang SZ_128K / 512, SZ_256K / 512, SZ_512K / 512, SZ_1M / 512, 519288cac0SWolfram Sang SZ_2M / 512, SZ_4M / 512, SZ_8M / 512, (SZ_8M + SZ_4M) / 512, 529288cac0SWolfram Sang SZ_16M / 512, (SZ_16M + SZ_8M) / 512, SZ_32M / 512, SZ_64M / 512, 539288cac0SWolfram Sang }; 549288cac0SWolfram Sang 557ea239d9SPierre Ossman #define UNSTUFF_BITS(resp,start,size) \ 567ea239d9SPierre Ossman ({ \ 577ea239d9SPierre Ossman const int __size = size; \ 587ea239d9SPierre Ossman const u32 __mask = (__size < 32 ? 1 << __size : 0) - 1; \ 597ea239d9SPierre Ossman const int __off = 3 - ((start) / 32); \ 607ea239d9SPierre Ossman const int __shft = (start) & 31; \ 617ea239d9SPierre Ossman u32 __res; \ 627ea239d9SPierre Ossman \ 637ea239d9SPierre Ossman __res = resp[__off] >> __shft; \ 647ea239d9SPierre Ossman if (__size + __shft > 32) \ 657ea239d9SPierre Ossman __res |= resp[__off-1] << ((32 - __shft) % 32); \ 667ea239d9SPierre Ossman __res & __mask; \ 677ea239d9SPierre Ossman }) 687ea239d9SPierre Ossman 697ea239d9SPierre Ossman /* 707ea239d9SPierre Ossman * Given the decoded CSD structure, decode the raw CID to our CID structure. 717ea239d9SPierre Ossman */ 7271578a1eSMichal Miroslaw void mmc_decode_cid(struct mmc_card *card) 737ea239d9SPierre Ossman { 747ea239d9SPierre Ossman u32 *resp = card->raw_cid; 757ea239d9SPierre Ossman 767ea239d9SPierre Ossman /* 777ea239d9SPierre Ossman * SD doesn't currently have a version field so we will 787ea239d9SPierre Ossman * have to assume we can parse this. 797ea239d9SPierre Ossman */ 807ea239d9SPierre Ossman card->cid.manfid = UNSTUFF_BITS(resp, 120, 8); 817ea239d9SPierre Ossman card->cid.oemid = UNSTUFF_BITS(resp, 104, 16); 827ea239d9SPierre Ossman card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); 837ea239d9SPierre Ossman card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); 847ea239d9SPierre Ossman card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); 857ea239d9SPierre Ossman card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); 867ea239d9SPierre Ossman card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); 877ea239d9SPierre Ossman card->cid.hwrev = UNSTUFF_BITS(resp, 60, 4); 887ea239d9SPierre Ossman card->cid.fwrev = UNSTUFF_BITS(resp, 56, 4); 897ea239d9SPierre Ossman card->cid.serial = UNSTUFF_BITS(resp, 24, 32); 907ea239d9SPierre Ossman card->cid.year = UNSTUFF_BITS(resp, 12, 8); 917ea239d9SPierre Ossman card->cid.month = UNSTUFF_BITS(resp, 8, 4); 927ea239d9SPierre Ossman 937ea239d9SPierre Ossman card->cid.year += 2000; /* SD cards year offset */ 947ea239d9SPierre Ossman } 957ea239d9SPierre Ossman 967ea239d9SPierre Ossman /* 977ea239d9SPierre Ossman * Given a 128-bit response, decode to our card CSD structure. 987ea239d9SPierre Ossman */ 99bd766312SPierre Ossman static int mmc_decode_csd(struct mmc_card *card) 1007ea239d9SPierre Ossman { 1017ea239d9SPierre Ossman struct mmc_csd *csd = &card->csd; 1027ea239d9SPierre Ossman unsigned int e, m, csd_struct; 1037ea239d9SPierre Ossman u32 *resp = card->raw_csd; 1047ea239d9SPierre Ossman 1057ea239d9SPierre Ossman csd_struct = UNSTUFF_BITS(resp, 126, 2); 1067ea239d9SPierre Ossman 1077ea239d9SPierre Ossman switch (csd_struct) { 1087ea239d9SPierre Ossman case 0: 1097ea239d9SPierre Ossman m = UNSTUFF_BITS(resp, 115, 4); 1107ea239d9SPierre Ossman e = UNSTUFF_BITS(resp, 112, 3); 1114406ae21SShawn Lin csd->taac_ns = (taac_exp[e] * taac_mant[m] + 9) / 10; 1124406ae21SShawn Lin csd->taac_clks = UNSTUFF_BITS(resp, 104, 8) * 100; 1137ea239d9SPierre Ossman 1147ea239d9SPierre Ossman m = UNSTUFF_BITS(resp, 99, 4); 1157ea239d9SPierre Ossman e = UNSTUFF_BITS(resp, 96, 3); 1167ea239d9SPierre Ossman csd->max_dtr = tran_exp[e] * tran_mant[m]; 1177ea239d9SPierre Ossman csd->cmdclass = UNSTUFF_BITS(resp, 84, 12); 1187ea239d9SPierre Ossman 1197ea239d9SPierre Ossman e = UNSTUFF_BITS(resp, 47, 3); 1207ea239d9SPierre Ossman m = UNSTUFF_BITS(resp, 62, 12); 1217ea239d9SPierre Ossman csd->capacity = (1 + m) << (e + 2); 1227ea239d9SPierre Ossman 1237ea239d9SPierre Ossman csd->read_blkbits = UNSTUFF_BITS(resp, 80, 4); 1247ea239d9SPierre Ossman csd->read_partial = UNSTUFF_BITS(resp, 79, 1); 1257ea239d9SPierre Ossman csd->write_misalign = UNSTUFF_BITS(resp, 78, 1); 1267ea239d9SPierre Ossman csd->read_misalign = UNSTUFF_BITS(resp, 77, 1); 1273d705d14SSascha Hauer csd->dsr_imp = UNSTUFF_BITS(resp, 76, 1); 1287ea239d9SPierre Ossman csd->r2w_factor = UNSTUFF_BITS(resp, 26, 3); 1297ea239d9SPierre Ossman csd->write_blkbits = UNSTUFF_BITS(resp, 22, 4); 1307ea239d9SPierre Ossman csd->write_partial = UNSTUFF_BITS(resp, 21, 1); 131dfe86cbaSAdrian Hunter 132dfe86cbaSAdrian Hunter if (UNSTUFF_BITS(resp, 46, 1)) { 133dfe86cbaSAdrian Hunter csd->erase_size = 1; 134dfe86cbaSAdrian Hunter } else if (csd->write_blkbits >= 9) { 135dfe86cbaSAdrian Hunter csd->erase_size = UNSTUFF_BITS(resp, 39, 7) + 1; 136dfe86cbaSAdrian Hunter csd->erase_size <<= csd->write_blkbits - 9; 137dfe86cbaSAdrian Hunter } 138*917a5336SSeunghui Lee 139*917a5336SSeunghui Lee if (UNSTUFF_BITS(resp, 13, 1)) 140*917a5336SSeunghui Lee mmc_card_set_readonly(card); 1417ea239d9SPierre Ossman break; 1427ea239d9SPierre Ossman case 1: 1437ea239d9SPierre Ossman /* 1443a303511SArindam Nath * This is a block-addressed SDHC or SDXC card. Most 1457ea239d9SPierre Ossman * interesting fields are unused and have fixed 1467ea239d9SPierre Ossman * values. To avoid getting tripped by buggy cards, 1477ea239d9SPierre Ossman * we assume those fixed values ourselves. 1487ea239d9SPierre Ossman */ 1497ea239d9SPierre Ossman mmc_card_set_blockaddr(card); 1507ea239d9SPierre Ossman 1514406ae21SShawn Lin csd->taac_ns = 0; /* Unused */ 1524406ae21SShawn Lin csd->taac_clks = 0; /* Unused */ 1537ea239d9SPierre Ossman 1547ea239d9SPierre Ossman m = UNSTUFF_BITS(resp, 99, 4); 1557ea239d9SPierre Ossman e = UNSTUFF_BITS(resp, 96, 3); 1567ea239d9SPierre Ossman csd->max_dtr = tran_exp[e] * tran_mant[m]; 1577ea239d9SPierre Ossman csd->cmdclass = UNSTUFF_BITS(resp, 84, 12); 1583a303511SArindam Nath csd->c_size = UNSTUFF_BITS(resp, 48, 22); 1593a303511SArindam Nath 1603a303511SArindam Nath /* SDXC cards have a minimum C_SIZE of 0x00FFFF */ 1613a303511SArindam Nath if (csd->c_size >= 0xFFFF) 1623a303511SArindam Nath mmc_card_set_ext_capacity(card); 1637ea239d9SPierre Ossman 1647ea239d9SPierre Ossman m = UNSTUFF_BITS(resp, 48, 22); 1657ea239d9SPierre Ossman csd->capacity = (1 + m) << 10; 1667ea239d9SPierre Ossman 1677ea239d9SPierre Ossman csd->read_blkbits = 9; 1687ea239d9SPierre Ossman csd->read_partial = 0; 1697ea239d9SPierre Ossman csd->write_misalign = 0; 1707ea239d9SPierre Ossman csd->read_misalign = 0; 1717ea239d9SPierre Ossman csd->r2w_factor = 4; /* Unused */ 1727ea239d9SPierre Ossman csd->write_blkbits = 9; 1737ea239d9SPierre Ossman csd->write_partial = 0; 174dfe86cbaSAdrian Hunter csd->erase_size = 1; 175*917a5336SSeunghui Lee 176*917a5336SSeunghui Lee if (UNSTUFF_BITS(resp, 13, 1)) 177*917a5336SSeunghui Lee mmc_card_set_readonly(card); 1787ea239d9SPierre Ossman break; 1797ea239d9SPierre Ossman default: 180a3c76eb9SGirish K S pr_err("%s: unrecognised CSD structure version %d\n", 1817ea239d9SPierre Ossman mmc_hostname(card->host), csd_struct); 182bd766312SPierre Ossman return -EINVAL; 1837ea239d9SPierre Ossman } 184bd766312SPierre Ossman 185dfe86cbaSAdrian Hunter card->erase_size = csd->erase_size; 186dfe86cbaSAdrian Hunter 187bd766312SPierre Ossman return 0; 1887ea239d9SPierre Ossman } 1897ea239d9SPierre Ossman 1907ea239d9SPierre Ossman /* 1917ea239d9SPierre Ossman * Given a 64-bit response, decode to our card SCR structure. 1927ea239d9SPierre Ossman */ 193bd766312SPierre Ossman static int mmc_decode_scr(struct mmc_card *card) 1947ea239d9SPierre Ossman { 1957ea239d9SPierre Ossman struct sd_scr *scr = &card->scr; 1967ea239d9SPierre Ossman unsigned int scr_struct; 1977ea239d9SPierre Ossman u32 resp[4]; 1987ea239d9SPierre Ossman 1997ea239d9SPierre Ossman resp[3] = card->raw_scr[1]; 2007ea239d9SPierre Ossman resp[2] = card->raw_scr[0]; 2017ea239d9SPierre Ossman 2027ea239d9SPierre Ossman scr_struct = UNSTUFF_BITS(resp, 60, 4); 2037ea239d9SPierre Ossman if (scr_struct != 0) { 204a3c76eb9SGirish K S pr_err("%s: unrecognised SCR structure version %d\n", 2057ea239d9SPierre Ossman mmc_hostname(card->host), scr_struct); 206bd766312SPierre Ossman return -EINVAL; 2077ea239d9SPierre Ossman } 2087ea239d9SPierre Ossman 2097ea239d9SPierre Ossman scr->sda_vsn = UNSTUFF_BITS(resp, 56, 4); 2107ea239d9SPierre Ossman scr->bus_widths = UNSTUFF_BITS(resp, 48, 4); 211013909c4SArindam Nath if (scr->sda_vsn == SCR_SPEC_VER_2) 212013909c4SArindam Nath /* Check if Physical Layer Spec v3.0 is supported */ 213013909c4SArindam Nath scr->sda_spec3 = UNSTUFF_BITS(resp, 47, 1); 214bd766312SPierre Ossman 21568539e2bSAvri Altman if (scr->sda_spec3) { 21668539e2bSAvri Altman scr->sda_spec4 = UNSTUFF_BITS(resp, 42, 1); 21768539e2bSAvri Altman scr->sda_specx = UNSTUFF_BITS(resp, 38, 4); 21868539e2bSAvri Altman } 21968539e2bSAvri Altman 220dfe86cbaSAdrian Hunter if (UNSTUFF_BITS(resp, 55, 1)) 221dfe86cbaSAdrian Hunter card->erased_byte = 0xFF; 222dfe86cbaSAdrian Hunter else 223dfe86cbaSAdrian Hunter card->erased_byte = 0x0; 224dfe86cbaSAdrian Hunter 225f0d89972SAndrei Warkentin if (scr->sda_spec3) 226f0d89972SAndrei Warkentin scr->cmds = UNSTUFF_BITS(resp, 32, 2); 2279e4be8d0SRaul E Rangel 2289e4be8d0SRaul E Rangel /* SD Spec says: any SD Card shall set at least bits 0 and 2 */ 2299e4be8d0SRaul E Rangel if (!(scr->bus_widths & SD_SCR_BUS_WIDTH_1) || 2309e4be8d0SRaul E Rangel !(scr->bus_widths & SD_SCR_BUS_WIDTH_4)) { 2319e4be8d0SRaul E Rangel pr_err("%s: invalid bus width\n", mmc_hostname(card->host)); 2329e4be8d0SRaul E Rangel return -EINVAL; 2339e4be8d0SRaul E Rangel } 2349e4be8d0SRaul E Rangel 235bd766312SPierre Ossman return 0; 2367ea239d9SPierre Ossman } 2377ea239d9SPierre Ossman 2387ea239d9SPierre Ossman /* 239dfe86cbaSAdrian Hunter * Fetch and process SD Status register. 240dfe86cbaSAdrian Hunter */ 241dfe86cbaSAdrian Hunter static int mmc_read_ssr(struct mmc_card *card) 242dfe86cbaSAdrian Hunter { 243dfe86cbaSAdrian Hunter unsigned int au, es, et, eo; 24406c9ccb7SWinkler, Tomas __be32 *raw_ssr; 245bc47e2f6SAvri Altman u32 resp[4] = {}; 246bc47e2f6SAvri Altman u8 discard_support; 2475275a652SUri Yanai int i; 248dfe86cbaSAdrian Hunter 249dfe86cbaSAdrian Hunter if (!(card->csd.cmdclass & CCC_APP_SPEC)) { 2506606110dSJoe Perches pr_warn("%s: card lacks mandatory SD Status function\n", 2516606110dSJoe Perches mmc_hostname(card->host)); 252dfe86cbaSAdrian Hunter return 0; 253dfe86cbaSAdrian Hunter } 254dfe86cbaSAdrian Hunter 255e85baa88SPaul Burton raw_ssr = kmalloc(sizeof(card->raw_ssr), GFP_KERNEL); 256e85baa88SPaul Burton if (!raw_ssr) 257e85baa88SPaul Burton return -ENOMEM; 258e85baa88SPaul Burton 259e85baa88SPaul Burton if (mmc_app_sd_status(card, raw_ssr)) { 2606606110dSJoe Perches pr_warn("%s: problem reading SD Status register\n", 2616606110dSJoe Perches mmc_hostname(card->host)); 262e85baa88SPaul Burton kfree(raw_ssr); 2635275a652SUri Yanai return 0; 264dfe86cbaSAdrian Hunter } 265dfe86cbaSAdrian Hunter 266dfe86cbaSAdrian Hunter for (i = 0; i < 16; i++) 267e85baa88SPaul Burton card->raw_ssr[i] = be32_to_cpu(raw_ssr[i]); 268e85baa88SPaul Burton 269e85baa88SPaul Burton kfree(raw_ssr); 270dfe86cbaSAdrian Hunter 271dfe86cbaSAdrian Hunter /* 272dfe86cbaSAdrian Hunter * UNSTUFF_BITS only works with four u32s so we have to offset the 273dfe86cbaSAdrian Hunter * bitfield positions accordingly. 274dfe86cbaSAdrian Hunter */ 2755275a652SUri Yanai au = UNSTUFF_BITS(card->raw_ssr, 428 - 384, 4); 2769288cac0SWolfram Sang if (au) { 2779288cac0SWolfram Sang if (au <= 9 || card->scr.sda_spec3) { 2789288cac0SWolfram Sang card->ssr.au = sd_au_size[au]; 2795275a652SUri Yanai es = UNSTUFF_BITS(card->raw_ssr, 408 - 384, 16); 2805275a652SUri Yanai et = UNSTUFF_BITS(card->raw_ssr, 402 - 384, 6); 281dfe86cbaSAdrian Hunter if (es && et) { 2825275a652SUri Yanai eo = UNSTUFF_BITS(card->raw_ssr, 400 - 384, 2); 283dfe86cbaSAdrian Hunter card->ssr.erase_timeout = (et * 1000) / es; 284dfe86cbaSAdrian Hunter card->ssr.erase_offset = eo * 1000; 285dfe86cbaSAdrian Hunter } 286dfe86cbaSAdrian Hunter } else { 2876606110dSJoe Perches pr_warn("%s: SD Status: Invalid Allocation Unit size\n", 2889288cac0SWolfram Sang mmc_hostname(card->host)); 2899288cac0SWolfram Sang } 290dfe86cbaSAdrian Hunter } 2915275a652SUri Yanai 292bc47e2f6SAvri Altman /* 293bc47e2f6SAvri Altman * starting SD5.1 discard is supported if DISCARD_SUPPORT (b313) is set 294bc47e2f6SAvri Altman */ 295bc47e2f6SAvri Altman resp[3] = card->raw_ssr[6]; 296bc47e2f6SAvri Altman discard_support = UNSTUFF_BITS(resp, 313 - 288, 1); 297bc47e2f6SAvri Altman card->erase_arg = (card->scr.sda_specx && discard_support) ? 298bc47e2f6SAvri Altman SD_DISCARD_ARG : SD_ERASE_ARG; 29901904ff7SAvri Altman 3005275a652SUri Yanai return 0; 301dfe86cbaSAdrian Hunter } 302dfe86cbaSAdrian Hunter 303dfe86cbaSAdrian Hunter /* 3041addfcdbSPierre Ossman * Fetches and decodes switch information 3057ea239d9SPierre Ossman */ 3061addfcdbSPierre Ossman static int mmc_read_switch(struct mmc_card *card) 3077ea239d9SPierre Ossman { 3087ea239d9SPierre Ossman int err; 3097ea239d9SPierre Ossman u8 *status; 3107ea239d9SPierre Ossman 3113373c0aeSPierre Ossman if (card->scr.sda_vsn < SCR_SPEC_VER_1) 31217b0429dSPierre Ossman return 0; 3133373c0aeSPierre Ossman 3143373c0aeSPierre Ossman if (!(card->csd.cmdclass & CCC_SWITCH)) { 3156606110dSJoe Perches pr_warn("%s: card lacks mandatory switch function, performance might suffer\n", 3163373c0aeSPierre Ossman mmc_hostname(card->host)); 31717b0429dSPierre Ossman return 0; 3183373c0aeSPierre Ossman } 3193373c0aeSPierre Ossman 3207ea239d9SPierre Ossman status = kmalloc(64, GFP_KERNEL); 321e1df7ae3SMarkus Elfring if (!status) 32217b0429dSPierre Ossman return -ENOMEM; 3237ea239d9SPierre Ossman 324a39ca6aeSAaron Lu /* 325a39ca6aeSAaron Lu * Find out the card's support bits with a mode 0 operation. 326a39ca6aeSAaron Lu * The argument does not matter, as the support bits do not 327a39ca6aeSAaron Lu * change with the arguments. 328a39ca6aeSAaron Lu */ 329a39ca6aeSAaron Lu err = mmc_sd_switch(card, 0, 0, 0, status); 33017b0429dSPierre Ossman if (err) { 331013909c4SArindam Nath /* 332013909c4SArindam Nath * If the host or the card can't do the switch, 333013909c4SArindam Nath * fail more gracefully. 334013909c4SArindam Nath */ 335013909c4SArindam Nath if (err != -EINVAL && err != -ENOSYS && err != -EFAULT) 336adf66a0dSPierre Ossman goto out; 337adf66a0dSPierre Ossman 3386606110dSJoe Perches pr_warn("%s: problem reading Bus Speed modes\n", 3393373c0aeSPierre Ossman mmc_hostname(card->host)); 34017b0429dSPierre Ossman err = 0; 341adf66a0dSPierre Ossman 3427ea239d9SPierre Ossman goto out; 3437ea239d9SPierre Ossman } 3447ea239d9SPierre Ossman 345fffe5d5aSQiang Liu if (status[13] & SD_MODE_HIGH_SPEED) 346fffe5d5aSQiang Liu card->sw_caps.hs_max_dtr = HIGH_SPEED_MAX_DTR; 347f2815f68SSubhash Jadavani 348013909c4SArindam Nath if (card->scr.sda_spec3) { 349013909c4SArindam Nath card->sw_caps.sd3_bus_mode = status[13]; 350a39ca6aeSAaron Lu /* Driver Strengths supported by the card */ 351013909c4SArindam Nath card->sw_caps.sd3_drv_type = status[9]; 352d9812780SRussell King card->sw_caps.sd3_curr_limit = status[7] | status[6] << 8; 353013909c4SArindam Nath } 3547ea239d9SPierre Ossman 3551addfcdbSPierre Ossman out: 3561addfcdbSPierre Ossman kfree(status); 3571addfcdbSPierre Ossman 3581addfcdbSPierre Ossman return err; 3591addfcdbSPierre Ossman } 3601addfcdbSPierre Ossman 3611addfcdbSPierre Ossman /* 3621addfcdbSPierre Ossman * Test if the card supports high-speed mode and, if so, switch to it. 3631addfcdbSPierre Ossman */ 36471578a1eSMichal Miroslaw int mmc_sd_switch_hs(struct mmc_card *card) 3651addfcdbSPierre Ossman { 3661addfcdbSPierre Ossman int err; 3671addfcdbSPierre Ossman u8 *status; 3681addfcdbSPierre Ossman 3693373c0aeSPierre Ossman if (card->scr.sda_vsn < SCR_SPEC_VER_1) 37017b0429dSPierre Ossman return 0; 3713373c0aeSPierre Ossman 3723373c0aeSPierre Ossman if (!(card->csd.cmdclass & CCC_SWITCH)) 37317b0429dSPierre Ossman return 0; 3743373c0aeSPierre Ossman 3751addfcdbSPierre Ossman if (!(card->host->caps & MMC_CAP_SD_HIGHSPEED)) 37617b0429dSPierre Ossman return 0; 3771addfcdbSPierre Ossman 3781addfcdbSPierre Ossman if (card->sw_caps.hs_max_dtr == 0) 37917b0429dSPierre Ossman return 0; 3801addfcdbSPierre Ossman 3811addfcdbSPierre Ossman status = kmalloc(64, GFP_KERNEL); 382e1df7ae3SMarkus Elfring if (!status) 38317b0429dSPierre Ossman return -ENOMEM; 3841addfcdbSPierre Ossman 3859d624f4fSJisheng Zhang err = mmc_sd_switch(card, 1, 0, HIGH_SPEED_BUS_SPEED, status); 38617b0429dSPierre Ossman if (err) 3877ea239d9SPierre Ossman goto out; 3887ea239d9SPierre Ossman 3899d624f4fSJisheng Zhang if ((status[16] & 0xF) != HIGH_SPEED_BUS_SPEED) { 3906606110dSJoe Perches pr_warn("%s: Problem switching card into high-speed mode!\n", 3917ea239d9SPierre Ossman mmc_hostname(card->host)); 39271578a1eSMichal Miroslaw err = 0; 3937ea239d9SPierre Ossman } else { 39471578a1eSMichal Miroslaw err = 1; 3957ea239d9SPierre Ossman } 3967ea239d9SPierre Ossman 3977ea239d9SPierre Ossman out: 3987ea239d9SPierre Ossman kfree(status); 3997ea239d9SPierre Ossman 4007ea239d9SPierre Ossman return err; 4017ea239d9SPierre Ossman } 4027ea239d9SPierre Ossman 403d6d50a15SArindam Nath static int sd_select_driver_type(struct mmc_card *card, u8 *status) 404d6d50a15SArindam Nath { 405fa021cefSAdrian Hunter int card_drv_type, drive_strength, drv_type; 406d6d50a15SArindam Nath int err; 407d6d50a15SArindam Nath 4083853a042SAdrian Hunter card->drive_strength = 0; 4093853a042SAdrian Hunter 410fa021cefSAdrian Hunter card_drv_type = card->sw_caps.sd3_drv_type | SD_DRIVER_TYPE_B; 411ca8e99b3SPhilip Rakity 412e23350b3SAdrian Hunter drive_strength = mmc_select_drive_strength(card, 413ca8e99b3SPhilip Rakity card->sw_caps.uhs_max_dtr, 414e23350b3SAdrian Hunter card_drv_type, &drv_type); 415ca8e99b3SPhilip Rakity 416b4f30a17SAdrian Hunter if (drive_strength) { 417ca8e99b3SPhilip Rakity err = mmc_sd_switch(card, 1, 2, drive_strength, status); 418d6d50a15SArindam Nath if (err) 419d6d50a15SArindam Nath return err; 420ca8e99b3SPhilip Rakity if ((status[15] & 0xF) != drive_strength) { 4216606110dSJoe Perches pr_warn("%s: Problem setting drive strength!\n", 422d6d50a15SArindam Nath mmc_hostname(card->host)); 423d6d50a15SArindam Nath return 0; 424d6d50a15SArindam Nath } 4253853a042SAdrian Hunter card->drive_strength = drive_strength; 426b4f30a17SAdrian Hunter } 427d6d50a15SArindam Nath 428b4f30a17SAdrian Hunter if (drv_type) 429b4f30a17SAdrian Hunter mmc_set_driver_type(card->host, drv_type); 430d6d50a15SArindam Nath 431d6d50a15SArindam Nath return 0; 432d6d50a15SArindam Nath } 433d6d50a15SArindam Nath 43493c712f9SSubhash Jadavani static void sd_update_bus_speed_mode(struct mmc_card *card) 43549c468fcSArindam Nath { 43649c468fcSArindam Nath /* 43749c468fcSArindam Nath * If the host doesn't support any of the UHS-I modes, fallback on 43849c468fcSArindam Nath * default speed. 43949c468fcSArindam Nath */ 4403f8a7fabSJohan Rudholm if (!mmc_host_uhs(card->host)) { 44193c712f9SSubhash Jadavani card->sd_bus_speed = 0; 44293c712f9SSubhash Jadavani return; 44393c712f9SSubhash Jadavani } 44449c468fcSArindam Nath 44549c468fcSArindam Nath if ((card->host->caps & MMC_CAP_UHS_SDR104) && 44649c468fcSArindam Nath (card->sw_caps.sd3_bus_mode & SD_MODE_UHS_SDR104)) { 44793c712f9SSubhash Jadavani card->sd_bus_speed = UHS_SDR104_BUS_SPEED; 44849c468fcSArindam Nath } else if ((card->host->caps & MMC_CAP_UHS_DDR50) && 44949c468fcSArindam Nath (card->sw_caps.sd3_bus_mode & SD_MODE_UHS_DDR50)) { 45093c712f9SSubhash Jadavani card->sd_bus_speed = UHS_DDR50_BUS_SPEED; 45149c468fcSArindam Nath } else if ((card->host->caps & (MMC_CAP_UHS_SDR104 | 45249c468fcSArindam Nath MMC_CAP_UHS_SDR50)) && (card->sw_caps.sd3_bus_mode & 45349c468fcSArindam Nath SD_MODE_UHS_SDR50)) { 45493c712f9SSubhash Jadavani card->sd_bus_speed = UHS_SDR50_BUS_SPEED; 45549c468fcSArindam Nath } else if ((card->host->caps & (MMC_CAP_UHS_SDR104 | 45649c468fcSArindam Nath MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR25)) && 45749c468fcSArindam Nath (card->sw_caps.sd3_bus_mode & SD_MODE_UHS_SDR25)) { 45893c712f9SSubhash Jadavani card->sd_bus_speed = UHS_SDR25_BUS_SPEED; 45949c468fcSArindam Nath } else if ((card->host->caps & (MMC_CAP_UHS_SDR104 | 46049c468fcSArindam Nath MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR25 | 46149c468fcSArindam Nath MMC_CAP_UHS_SDR12)) && (card->sw_caps.sd3_bus_mode & 46249c468fcSArindam Nath SD_MODE_UHS_SDR12)) { 46393c712f9SSubhash Jadavani card->sd_bus_speed = UHS_SDR12_BUS_SPEED; 46493c712f9SSubhash Jadavani } 46549c468fcSArindam Nath } 46649c468fcSArindam Nath 46793c712f9SSubhash Jadavani static int sd_set_bus_speed_mode(struct mmc_card *card, u8 *status) 46893c712f9SSubhash Jadavani { 46993c712f9SSubhash Jadavani int err; 47093c712f9SSubhash Jadavani unsigned int timing = 0; 47193c712f9SSubhash Jadavani 47293c712f9SSubhash Jadavani switch (card->sd_bus_speed) { 47393c712f9SSubhash Jadavani case UHS_SDR104_BUS_SPEED: 47493c712f9SSubhash Jadavani timing = MMC_TIMING_UHS_SDR104; 47593c712f9SSubhash Jadavani card->sw_caps.uhs_max_dtr = UHS_SDR104_MAX_DTR; 47693c712f9SSubhash Jadavani break; 47793c712f9SSubhash Jadavani case UHS_DDR50_BUS_SPEED: 47893c712f9SSubhash Jadavani timing = MMC_TIMING_UHS_DDR50; 47993c712f9SSubhash Jadavani card->sw_caps.uhs_max_dtr = UHS_DDR50_MAX_DTR; 48093c712f9SSubhash Jadavani break; 48193c712f9SSubhash Jadavani case UHS_SDR50_BUS_SPEED: 48293c712f9SSubhash Jadavani timing = MMC_TIMING_UHS_SDR50; 48393c712f9SSubhash Jadavani card->sw_caps.uhs_max_dtr = UHS_SDR50_MAX_DTR; 48493c712f9SSubhash Jadavani break; 48593c712f9SSubhash Jadavani case UHS_SDR25_BUS_SPEED: 48693c712f9SSubhash Jadavani timing = MMC_TIMING_UHS_SDR25; 48793c712f9SSubhash Jadavani card->sw_caps.uhs_max_dtr = UHS_SDR25_MAX_DTR; 48893c712f9SSubhash Jadavani break; 48993c712f9SSubhash Jadavani case UHS_SDR12_BUS_SPEED: 49093c712f9SSubhash Jadavani timing = MMC_TIMING_UHS_SDR12; 49193c712f9SSubhash Jadavani card->sw_caps.uhs_max_dtr = UHS_SDR12_MAX_DTR; 49293c712f9SSubhash Jadavani break; 49393c712f9SSubhash Jadavani default: 49493c712f9SSubhash Jadavani return 0; 49593c712f9SSubhash Jadavani } 49693c712f9SSubhash Jadavani 49793c712f9SSubhash Jadavani err = mmc_sd_switch(card, 1, 0, card->sd_bus_speed, status); 49849c468fcSArindam Nath if (err) 49949c468fcSArindam Nath return err; 50049c468fcSArindam Nath 50193c712f9SSubhash Jadavani if ((status[16] & 0xF) != card->sd_bus_speed) 5026606110dSJoe Perches pr_warn("%s: Problem setting bus speed mode!\n", 50349c468fcSArindam Nath mmc_hostname(card->host)); 50449c468fcSArindam Nath else { 50549c468fcSArindam Nath mmc_set_timing(card->host, timing); 50649c468fcSArindam Nath mmc_set_clock(card->host, card->sw_caps.uhs_max_dtr); 50749c468fcSArindam Nath } 50849c468fcSArindam Nath 50949c468fcSArindam Nath return 0; 51049c468fcSArindam Nath } 51149c468fcSArindam Nath 51255c4665eSAaron Lu /* Get host's max current setting at its current voltage */ 51355c4665eSAaron Lu static u32 sd_get_host_max_current(struct mmc_host *host) 51455c4665eSAaron Lu { 51555c4665eSAaron Lu u32 voltage, max_current; 51655c4665eSAaron Lu 51755c4665eSAaron Lu voltage = 1 << host->ios.vdd; 51855c4665eSAaron Lu switch (voltage) { 51955c4665eSAaron Lu case MMC_VDD_165_195: 52055c4665eSAaron Lu max_current = host->max_current_180; 52155c4665eSAaron Lu break; 52255c4665eSAaron Lu case MMC_VDD_29_30: 52355c4665eSAaron Lu case MMC_VDD_30_31: 52455c4665eSAaron Lu max_current = host->max_current_300; 52555c4665eSAaron Lu break; 52655c4665eSAaron Lu case MMC_VDD_32_33: 52755c4665eSAaron Lu case MMC_VDD_33_34: 52855c4665eSAaron Lu max_current = host->max_current_330; 52955c4665eSAaron Lu break; 53055c4665eSAaron Lu default: 53155c4665eSAaron Lu max_current = 0; 53255c4665eSAaron Lu } 53355c4665eSAaron Lu 53455c4665eSAaron Lu return max_current; 53555c4665eSAaron Lu } 53655c4665eSAaron Lu 5375371c927SArindam Nath static int sd_set_current_limit(struct mmc_card *card, u8 *status) 5385371c927SArindam Nath { 5390aa67700SPhilip Rakity int current_limit = SD_SET_CURRENT_NO_CHANGE; 5405371c927SArindam Nath int err; 54155c4665eSAaron Lu u32 max_current; 5425371c927SArindam Nath 5435371c927SArindam Nath /* 5445371c927SArindam Nath * Current limit switch is only defined for SDR50, SDR104, and DDR50 5450aa67700SPhilip Rakity * bus speed modes. For other bus speed modes, we do not change the 5460aa67700SPhilip Rakity * current limit. 54755c4665eSAaron Lu */ 54855c4665eSAaron Lu if ((card->sd_bus_speed != UHS_SDR50_BUS_SPEED) && 54955c4665eSAaron Lu (card->sd_bus_speed != UHS_SDR104_BUS_SPEED) && 55055c4665eSAaron Lu (card->sd_bus_speed != UHS_DDR50_BUS_SPEED)) 55155c4665eSAaron Lu return 0; 55255c4665eSAaron Lu 55355c4665eSAaron Lu /* 55455c4665eSAaron Lu * Host has different current capabilities when operating at 55555c4665eSAaron Lu * different voltages, so find out its max current first. 55655c4665eSAaron Lu */ 55755c4665eSAaron Lu max_current = sd_get_host_max_current(card->host); 55855c4665eSAaron Lu 55955c4665eSAaron Lu /* 560a39ca6aeSAaron Lu * We only check host's capability here, if we set a limit that is 561a39ca6aeSAaron Lu * higher than the card's maximum current, the card will be using its 562a39ca6aeSAaron Lu * maximum current, e.g. if the card's maximum current is 300ma, and 563a39ca6aeSAaron Lu * when we set current limit to 200ma, the card will draw 200ma, and 564a39ca6aeSAaron Lu * when we set current limit to 400/600/800ma, the card will draw its 565a39ca6aeSAaron Lu * maximum 300ma from the host. 566d9812780SRussell King * 567d9812780SRussell King * The above is incorrect: if we try to set a current limit that is 568d9812780SRussell King * not supported by the card, the card can rightfully error out the 569d9812780SRussell King * attempt, and remain at the default current limit. This results 570d9812780SRussell King * in a 300mA card being limited to 200mA even though the host 571d9812780SRussell King * supports 800mA. Failures seen with SanDisk 8GB UHS cards with 572d9812780SRussell King * an iMX6 host. --rmk 5735371c927SArindam Nath */ 574d9812780SRussell King if (max_current >= 800 && 575d9812780SRussell King card->sw_caps.sd3_curr_limit & SD_MAX_CURRENT_800) 5765371c927SArindam Nath current_limit = SD_SET_CURRENT_LIMIT_800; 577d9812780SRussell King else if (max_current >= 600 && 578d9812780SRussell King card->sw_caps.sd3_curr_limit & SD_MAX_CURRENT_600) 5795371c927SArindam Nath current_limit = SD_SET_CURRENT_LIMIT_600; 580d9812780SRussell King else if (max_current >= 400 && 581d9812780SRussell King card->sw_caps.sd3_curr_limit & SD_MAX_CURRENT_400) 5825371c927SArindam Nath current_limit = SD_SET_CURRENT_LIMIT_400; 583d9812780SRussell King else if (max_current >= 200 && 584d9812780SRussell King card->sw_caps.sd3_curr_limit & SD_MAX_CURRENT_200) 5855371c927SArindam Nath current_limit = SD_SET_CURRENT_LIMIT_200; 5865371c927SArindam Nath 5870aa67700SPhilip Rakity if (current_limit != SD_SET_CURRENT_NO_CHANGE) { 5885371c927SArindam Nath err = mmc_sd_switch(card, 1, 3, current_limit, status); 5895371c927SArindam Nath if (err) 5905371c927SArindam Nath return err; 5915371c927SArindam Nath 5925371c927SArindam Nath if (((status[15] >> 4) & 0x0F) != current_limit) 5936606110dSJoe Perches pr_warn("%s: Problem setting current limit!\n", 5945371c927SArindam Nath mmc_hostname(card->host)); 5955371c927SArindam Nath 5960aa67700SPhilip Rakity } 597a39ca6aeSAaron Lu 5985371c927SArindam Nath return 0; 5995371c927SArindam Nath } 6005371c927SArindam Nath 601d6d50a15SArindam Nath /* 602d6d50a15SArindam Nath * UHS-I specific initialization procedure 603d6d50a15SArindam Nath */ 604d6d50a15SArindam Nath static int mmc_sd_init_uhs_card(struct mmc_card *card) 605d6d50a15SArindam Nath { 606d6d50a15SArindam Nath int err; 607d6d50a15SArindam Nath u8 *status; 608d6d50a15SArindam Nath 609d6d50a15SArindam Nath if (!(card->csd.cmdclass & CCC_SWITCH)) 610d6d50a15SArindam Nath return 0; 611d6d50a15SArindam Nath 612d6d50a15SArindam Nath status = kmalloc(64, GFP_KERNEL); 613e1df7ae3SMarkus Elfring if (!status) 614d6d50a15SArindam Nath return -ENOMEM; 615d6d50a15SArindam Nath 616d6d50a15SArindam Nath /* Set 4-bit bus width */ 617d6d50a15SArindam Nath err = mmc_app_set_bus_width(card, MMC_BUS_WIDTH_4); 618d6d50a15SArindam Nath if (err) 619d6d50a15SArindam Nath goto out; 620d6d50a15SArindam Nath 621d6d50a15SArindam Nath mmc_set_bus_width(card->host, MMC_BUS_WIDTH_4); 622d6d50a15SArindam Nath 62393c712f9SSubhash Jadavani /* 62493c712f9SSubhash Jadavani * Select the bus speed mode depending on host 62593c712f9SSubhash Jadavani * and card capability. 62693c712f9SSubhash Jadavani */ 62793c712f9SSubhash Jadavani sd_update_bus_speed_mode(card); 62893c712f9SSubhash Jadavani 629d6d50a15SArindam Nath /* Set the driver strength for the card */ 630d6d50a15SArindam Nath err = sd_select_driver_type(card, status); 63149c468fcSArindam Nath if (err) 63249c468fcSArindam Nath goto out; 63349c468fcSArindam Nath 63493c712f9SSubhash Jadavani /* Set current limit for the card */ 63593c712f9SSubhash Jadavani err = sd_set_current_limit(card, status); 6365371c927SArindam Nath if (err) 6375371c927SArindam Nath goto out; 6385371c927SArindam Nath 63993c712f9SSubhash Jadavani /* Set bus speed mode of the card */ 64093c712f9SSubhash Jadavani err = sd_set_bus_speed_mode(card, status); 641b513ea25SArindam Nath if (err) 642b513ea25SArindam Nath goto out; 643b513ea25SArindam Nath 644810e08eeSFredrik Soderstedt /* 645810e08eeSFredrik Soderstedt * SPI mode doesn't define CMD19 and tuning is only valid for SDR50 and 646810e08eeSFredrik Soderstedt * SDR104 mode SD-cards. Note that tuning is mandatory for SDR104. 647810e08eeSFredrik Soderstedt */ 64863e415c6SAdrian Hunter if (!mmc_host_is_spi(card->host) && 649e10c3219SCarlo Caione (card->host->ios.timing == MMC_TIMING_UHS_SDR50 || 650e10c3219SCarlo Caione card->host->ios.timing == MMC_TIMING_UHS_DDR50 || 651e10c3219SCarlo Caione card->host->ios.timing == MMC_TIMING_UHS_SDR104)) { 65263e415c6SAdrian Hunter err = mmc_execute_tuning(card); 6534324f6deSWeijun Yang 6544324f6deSWeijun Yang /* 6554324f6deSWeijun Yang * As SD Specifications Part1 Physical Layer Specification 6564324f6deSWeijun Yang * Version 3.01 says, CMD19 tuning is available for unlocked 6574324f6deSWeijun Yang * cards in transfer state of 1.8V signaling mode. The small 6584324f6deSWeijun Yang * difference between v3.00 and 3.01 spec means that CMD19 6594324f6deSWeijun Yang * tuning is also available for DDR50 mode. 6604324f6deSWeijun Yang */ 661e10c3219SCarlo Caione if (err && card->host->ios.timing == MMC_TIMING_UHS_DDR50) { 6624324f6deSWeijun Yang pr_warn("%s: ddr50 tuning failed\n", 6634324f6deSWeijun Yang mmc_hostname(card->host)); 6644324f6deSWeijun Yang err = 0; 6654324f6deSWeijun Yang } 6664324f6deSWeijun Yang } 6674324f6deSWeijun Yang 668d6d50a15SArindam Nath out: 669d6d50a15SArindam Nath kfree(status); 670d6d50a15SArindam Nath 671d6d50a15SArindam Nath return err; 672d6d50a15SArindam Nath } 673d6d50a15SArindam Nath 67451ec92e2SPierre Ossman MMC_DEV_ATTR(cid, "%08x%08x%08x%08x\n", card->raw_cid[0], card->raw_cid[1], 67551ec92e2SPierre Ossman card->raw_cid[2], card->raw_cid[3]); 67651ec92e2SPierre Ossman MMC_DEV_ATTR(csd, "%08x%08x%08x%08x\n", card->raw_csd[0], card->raw_csd[1], 67751ec92e2SPierre Ossman card->raw_csd[2], card->raw_csd[3]); 67851ec92e2SPierre Ossman MMC_DEV_ATTR(scr, "%08x%08x\n", card->raw_scr[0], card->raw_scr[1]); 6795275a652SUri Yanai MMC_DEV_ATTR(ssr, 6805275a652SUri Yanai "%08x%08x%08x%08x%08x%08x%08x%08x%08x%08x%08x%08x%08x%08x%08x%08x\n", 6815275a652SUri Yanai card->raw_ssr[0], card->raw_ssr[1], card->raw_ssr[2], 6825275a652SUri Yanai card->raw_ssr[3], card->raw_ssr[4], card->raw_ssr[5], 6835275a652SUri Yanai card->raw_ssr[6], card->raw_ssr[7], card->raw_ssr[8], 6845275a652SUri Yanai card->raw_ssr[9], card->raw_ssr[10], card->raw_ssr[11], 6855275a652SUri Yanai card->raw_ssr[12], card->raw_ssr[13], card->raw_ssr[14], 6865275a652SUri Yanai card->raw_ssr[15]); 68751ec92e2SPierre Ossman MMC_DEV_ATTR(date, "%02d/%04d\n", card->cid.month, card->cid.year); 688dfe86cbaSAdrian Hunter MMC_DEV_ATTR(erase_size, "%u\n", card->erase_size << 9); 689dfe86cbaSAdrian Hunter MMC_DEV_ATTR(preferred_erase_size, "%u\n", card->pref_erase << 9); 69051ec92e2SPierre Ossman MMC_DEV_ATTR(fwrev, "0x%x\n", card->cid.fwrev); 69151ec92e2SPierre Ossman MMC_DEV_ATTR(hwrev, "0x%x\n", card->cid.hwrev); 69251ec92e2SPierre Ossman MMC_DEV_ATTR(manfid, "0x%06x\n", card->cid.manfid); 69351ec92e2SPierre Ossman MMC_DEV_ATTR(name, "%s\n", card->cid.prod_name); 69451ec92e2SPierre Ossman MMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid); 69551ec92e2SPierre Ossman MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial); 696c892b0d8SBastian Stender MMC_DEV_ATTR(ocr, "0x%08x\n", card->ocr); 697974e85e9SHarish Jenny K N MMC_DEV_ATTR(rca, "0x%04x\n", card->rca); 69851ec92e2SPierre Ossman 69951ec92e2SPierre Ossman 7006825a606SBojan Prtvar static ssize_t mmc_dsr_show(struct device *dev, 7016825a606SBojan Prtvar struct device_attribute *attr, 7026825a606SBojan Prtvar char *buf) 7036825a606SBojan Prtvar { 7046825a606SBojan Prtvar struct mmc_card *card = mmc_dev_to_card(dev); 7056825a606SBojan Prtvar struct mmc_host *host = card->host; 7066825a606SBojan Prtvar 7076825a606SBojan Prtvar if (card->csd.dsr_imp && host->dsr_req) 7086825a606SBojan Prtvar return sprintf(buf, "0x%x\n", host->dsr); 7096825a606SBojan Prtvar else 7106825a606SBojan Prtvar /* return default DSR value */ 7116825a606SBojan Prtvar return sprintf(buf, "0x%x\n", 0x404); 7126825a606SBojan Prtvar } 7136825a606SBojan Prtvar 7146825a606SBojan Prtvar static DEVICE_ATTR(dsr, S_IRUGO, mmc_dsr_show, NULL); 7156825a606SBojan Prtvar 716254e1754SPali Rohár MMC_DEV_ATTR(vendor, "0x%04x\n", card->cis.vendor); 717254e1754SPali Rohár MMC_DEV_ATTR(device, "0x%04x\n", card->cis.device); 718b698f6abSPali Rohár MMC_DEV_ATTR(revision, "%u.%u\n", card->major_rev, card->minor_rev); 719b698f6abSPali Rohár 720b698f6abSPali Rohár #define sdio_info_attr(num) \ 721b698f6abSPali Rohár static ssize_t info##num##_show(struct device *dev, struct device_attribute *attr, char *buf) \ 722b698f6abSPali Rohár { \ 723b698f6abSPali Rohár struct mmc_card *card = mmc_dev_to_card(dev); \ 724b698f6abSPali Rohár \ 725b698f6abSPali Rohár if (num > card->num_info) \ 726b698f6abSPali Rohár return -ENODATA; \ 727b698f6abSPali Rohár if (!card->info[num-1][0]) \ 728b698f6abSPali Rohár return 0; \ 729b698f6abSPali Rohár return sprintf(buf, "%s\n", card->info[num-1]); \ 730b698f6abSPali Rohár } \ 731b698f6abSPali Rohár static DEVICE_ATTR_RO(info##num) 732b698f6abSPali Rohár 733b698f6abSPali Rohár sdio_info_attr(1); 734b698f6abSPali Rohár sdio_info_attr(2); 735b698f6abSPali Rohár sdio_info_attr(3); 736b698f6abSPali Rohár sdio_info_attr(4); 737254e1754SPali Rohár 73851ec92e2SPierre Ossman static struct attribute *sd_std_attrs[] = { 739254e1754SPali Rohár &dev_attr_vendor.attr, 740254e1754SPali Rohár &dev_attr_device.attr, 741b698f6abSPali Rohár &dev_attr_revision.attr, 742b698f6abSPali Rohár &dev_attr_info1.attr, 743b698f6abSPali Rohár &dev_attr_info2.attr, 744b698f6abSPali Rohár &dev_attr_info3.attr, 745b698f6abSPali Rohár &dev_attr_info4.attr, 74651ec92e2SPierre Ossman &dev_attr_cid.attr, 74751ec92e2SPierre Ossman &dev_attr_csd.attr, 74851ec92e2SPierre Ossman &dev_attr_scr.attr, 7495275a652SUri Yanai &dev_attr_ssr.attr, 75051ec92e2SPierre Ossman &dev_attr_date.attr, 751dfe86cbaSAdrian Hunter &dev_attr_erase_size.attr, 752dfe86cbaSAdrian Hunter &dev_attr_preferred_erase_size.attr, 75351ec92e2SPierre Ossman &dev_attr_fwrev.attr, 75451ec92e2SPierre Ossman &dev_attr_hwrev.attr, 75551ec92e2SPierre Ossman &dev_attr_manfid.attr, 75651ec92e2SPierre Ossman &dev_attr_name.attr, 75751ec92e2SPierre Ossman &dev_attr_oemid.attr, 75851ec92e2SPierre Ossman &dev_attr_serial.attr, 7595fb06af7SBojan Prtvar &dev_attr_ocr.attr, 760974e85e9SHarish Jenny K N &dev_attr_rca.attr, 7616825a606SBojan Prtvar &dev_attr_dsr.attr, 76251ec92e2SPierre Ossman NULL, 76351ec92e2SPierre Ossman }; 764254e1754SPali Rohár 765254e1754SPali Rohár static umode_t sd_std_is_visible(struct kobject *kobj, struct attribute *attr, 766254e1754SPali Rohár int index) 767254e1754SPali Rohár { 768e449d983STian Tao struct device *dev = kobj_to_dev(kobj); 769254e1754SPali Rohár struct mmc_card *card = mmc_dev_to_card(dev); 770254e1754SPali Rohár 771b698f6abSPali Rohár /* CIS vendor and device ids, revision and info string are available only for Combo cards */ 772b698f6abSPali Rohár if ((attr == &dev_attr_vendor.attr || 773b698f6abSPali Rohár attr == &dev_attr_device.attr || 774b698f6abSPali Rohár attr == &dev_attr_revision.attr || 775b698f6abSPali Rohár attr == &dev_attr_info1.attr || 776b698f6abSPali Rohár attr == &dev_attr_info2.attr || 777b698f6abSPali Rohár attr == &dev_attr_info3.attr || 778b698f6abSPali Rohár attr == &dev_attr_info4.attr 779b698f6abSPali Rohár ) && card->type != MMC_TYPE_SD_COMBO) 780254e1754SPali Rohár return 0; 781254e1754SPali Rohár 782254e1754SPali Rohár return attr->mode; 783254e1754SPali Rohár } 784254e1754SPali Rohár 785254e1754SPali Rohár static const struct attribute_group sd_std_group = { 786254e1754SPali Rohár .attrs = sd_std_attrs, 787254e1754SPali Rohár .is_visible = sd_std_is_visible, 788254e1754SPali Rohár }; 789254e1754SPali Rohár __ATTRIBUTE_GROUPS(sd_std); 79051ec92e2SPierre Ossman 79171578a1eSMichal Miroslaw struct device_type sd_type = { 792d1e58212SAxel Lin .groups = sd_std_groups, 79351ec92e2SPierre Ossman }; 79451ec92e2SPierre Ossman 7957ea239d9SPierre Ossman /* 79671578a1eSMichal Miroslaw * Fetch CID from card. 7976abaa0c9SPierre Ossman */ 798d6d50a15SArindam Nath int mmc_sd_get_cid(struct mmc_host *host, u32 ocr, u32 *cid, u32 *rocr) 7996abaa0c9SPierre Ossman { 8006abaa0c9SPierre Ossman int err; 80155c4665eSAaron Lu u32 max_current; 8020797e5f1SJohan Rudholm int retries = 10; 80369041150SUlf Hansson u32 pocr = ocr; 8040797e5f1SJohan Rudholm 8050797e5f1SJohan Rudholm try_again: 8060797e5f1SJohan Rudholm if (!retries) { 8070797e5f1SJohan Rudholm ocr &= ~SD_OCR_S18R; 8086606110dSJoe Perches pr_warn("%s: Skipping voltage switch\n", mmc_hostname(host)); 8090797e5f1SJohan Rudholm } 8106abaa0c9SPierre Ossman 8116abaa0c9SPierre Ossman /* 8126abaa0c9SPierre Ossman * Since we're changing the OCR value, we seem to 8136abaa0c9SPierre Ossman * need to tell some cards to go back to the idle 8146abaa0c9SPierre Ossman * state. We wait 1ms to give cards time to 8156abaa0c9SPierre Ossman * respond. 8166abaa0c9SPierre Ossman */ 8176abaa0c9SPierre Ossman mmc_go_idle(host); 8186abaa0c9SPierre Ossman 8196abaa0c9SPierre Ossman /* 8206abaa0c9SPierre Ossman * If SD_SEND_IF_COND indicates an SD 2.0 8216abaa0c9SPierre Ossman * compliant card and we should set bit 30 8226abaa0c9SPierre Ossman * of the ocr to indicate that we can handle 8236abaa0c9SPierre Ossman * block-addressed SDHC cards. 8246abaa0c9SPierre Ossman */ 8256abaa0c9SPierre Ossman err = mmc_send_if_cond(host, ocr); 82617b0429dSPierre Ossman if (!err) 827f2119df6SArindam Nath ocr |= SD_OCR_CCS; 8286abaa0c9SPierre Ossman 829f2119df6SArindam Nath /* 830f2119df6SArindam Nath * If the host supports one of UHS-I modes, request the card 8310797e5f1SJohan Rudholm * to switch to 1.8V signaling level. If the card has failed 8320797e5f1SJohan Rudholm * repeatedly to switch however, skip this. 833f2119df6SArindam Nath */ 8340797e5f1SJohan Rudholm if (retries && mmc_host_uhs(host)) 835f2119df6SArindam Nath ocr |= SD_OCR_S18R; 836f2119df6SArindam Nath 83755c4665eSAaron Lu /* 83855c4665eSAaron Lu * If the host can supply more than 150mA at current voltage, 83955c4665eSAaron Lu * XPC should be set to 1. 84055c4665eSAaron Lu */ 84155c4665eSAaron Lu max_current = sd_get_host_max_current(host); 84255c4665eSAaron Lu if (max_current > 150) 843f2119df6SArindam Nath ocr |= SD_OCR_XPC; 844f2119df6SArindam Nath 845d6d50a15SArindam Nath err = mmc_send_app_op_cond(host, ocr, rocr); 84617b0429dSPierre Ossman if (err) 84771578a1eSMichal Miroslaw return err; 8486abaa0c9SPierre Ossman 849f2119df6SArindam Nath /* 850f2119df6SArindam Nath * In case CCS and S18A in the response is set, start Signal Voltage 851f2119df6SArindam Nath * Switch procedure. SPI mode doesn't support CMD11. 852f2119df6SArindam Nath */ 853d6d50a15SArindam Nath if (!mmc_host_is_spi(host) && rocr && 854d6d50a15SArindam Nath ((*rocr & 0x41000000) == 0x41000000)) { 8552ed573b6SUlf Hansson err = mmc_set_uhs_voltage(host, pocr); 8560797e5f1SJohan Rudholm if (err == -EAGAIN) { 8570797e5f1SJohan Rudholm retries--; 8580797e5f1SJohan Rudholm goto try_again; 8590797e5f1SJohan Rudholm } else if (err) { 8600797e5f1SJohan Rudholm retries = 0; 861f2119df6SArindam Nath goto try_again; 862f2119df6SArindam Nath } 863f2119df6SArindam Nath } 864f2119df6SArindam Nath 865af517150SDavid Brownell err = mmc_send_cid(host, cid); 86671578a1eSMichal Miroslaw return err; 867adf66a0dSPierre Ossman } 8686abaa0c9SPierre Ossman 869bd7342feSYue Hu int mmc_sd_get_csd(struct mmc_card *card) 87071578a1eSMichal Miroslaw { 87171578a1eSMichal Miroslaw int err; 8726abaa0c9SPierre Ossman 8736abaa0c9SPierre Ossman /* 8746abaa0c9SPierre Ossman * Fetch CSD from card. 8756abaa0c9SPierre Ossman */ 8766abaa0c9SPierre Ossman err = mmc_send_csd(card, card->raw_csd); 87717b0429dSPierre Ossman if (err) 87871578a1eSMichal Miroslaw return err; 8796abaa0c9SPierre Ossman 880bd766312SPierre Ossman err = mmc_decode_csd(card); 881adf66a0dSPierre Ossman if (err) 88271578a1eSMichal Miroslaw return err; 883bd766312SPierre Ossman 88471578a1eSMichal Miroslaw return 0; 8856abaa0c9SPierre Ossman } 8866abaa0c9SPierre Ossman 8879f6e0bffSLars-Peter Clausen static int mmc_sd_get_ro(struct mmc_host *host) 8889f6e0bffSLars-Peter Clausen { 8899f6e0bffSLars-Peter Clausen int ro; 8909f6e0bffSLars-Peter Clausen 8919f6e0bffSLars-Peter Clausen /* 8929f6e0bffSLars-Peter Clausen * Some systems don't feature a write-protect pin and don't need one. 8939f6e0bffSLars-Peter Clausen * E.g. because they only have micro-SD card slot. For those systems 8949f6e0bffSLars-Peter Clausen * assume that the SD card is always read-write. 8959f6e0bffSLars-Peter Clausen */ 8969f6e0bffSLars-Peter Clausen if (host->caps2 & MMC_CAP2_NO_WRITE_PROTECT) 8979f6e0bffSLars-Peter Clausen return 0; 8989f6e0bffSLars-Peter Clausen 8999f6e0bffSLars-Peter Clausen if (!host->ops->get_ro) 9009f6e0bffSLars-Peter Clausen return -1; 9019f6e0bffSLars-Peter Clausen 9029f6e0bffSLars-Peter Clausen ro = host->ops->get_ro(host); 9039f6e0bffSLars-Peter Clausen 9049f6e0bffSLars-Peter Clausen return ro; 9059f6e0bffSLars-Peter Clausen } 9069f6e0bffSLars-Peter Clausen 90771578a1eSMichal Miroslaw int mmc_sd_setup_card(struct mmc_host *host, struct mmc_card *card, 90871578a1eSMichal Miroslaw bool reinit) 90971578a1eSMichal Miroslaw { 91071578a1eSMichal Miroslaw int err; 9116abaa0c9SPierre Ossman 91271578a1eSMichal Miroslaw if (!reinit) { 9136abaa0c9SPierre Ossman /* 9146abaa0c9SPierre Ossman * Fetch SCR from card. 9156abaa0c9SPierre Ossman */ 91606c9ccb7SWinkler, Tomas err = mmc_app_send_scr(card); 91717b0429dSPierre Ossman if (err) 91871578a1eSMichal Miroslaw return err; 9196abaa0c9SPierre Ossman 920bd766312SPierre Ossman err = mmc_decode_scr(card); 92171578a1eSMichal Miroslaw if (err) 92271578a1eSMichal Miroslaw return err; 9236abaa0c9SPierre Ossman 9246abaa0c9SPierre Ossman /* 925dfe86cbaSAdrian Hunter * Fetch and process SD Status register. 926dfe86cbaSAdrian Hunter */ 927dfe86cbaSAdrian Hunter err = mmc_read_ssr(card); 928dfe86cbaSAdrian Hunter if (err) 929dfe86cbaSAdrian Hunter return err; 930dfe86cbaSAdrian Hunter 931dfe86cbaSAdrian Hunter /* Erase init depends on CSD and SSR */ 932dfe86cbaSAdrian Hunter mmc_init_erase(card); 933dfe86cbaSAdrian Hunter 934dfe86cbaSAdrian Hunter /* 9356abaa0c9SPierre Ossman * Fetch switch information from card. 9366abaa0c9SPierre Ossman */ 9376abaa0c9SPierre Ossman err = mmc_read_switch(card); 93817b0429dSPierre Ossman if (err) 93971578a1eSMichal Miroslaw return err; 9406abaa0c9SPierre Ossman } 9416abaa0c9SPierre Ossman 9426abaa0c9SPierre Ossman /* 9439d9f25c0SWolfgang Muees * For SPI, enable CRC as appropriate. 9449d9f25c0SWolfgang Muees * This CRC enable is located AFTER the reading of the 9459d9f25c0SWolfgang Muees * card registers because some SDHC cards are not able 9469d9f25c0SWolfgang Muees * to provide valid CRCs for non-512-byte blocks. 9479d9f25c0SWolfgang Muees */ 9489d9f25c0SWolfgang Muees if (mmc_host_is_spi(host)) { 9499d9f25c0SWolfgang Muees err = mmc_spi_set_crc(host, use_spi_crc); 9509d9f25c0SWolfgang Muees if (err) 95171578a1eSMichal Miroslaw return err; 9529d9f25c0SWolfgang Muees } 9539d9f25c0SWolfgang Muees 9549d9f25c0SWolfgang Muees /* 95571578a1eSMichal Miroslaw * Check if read-only switch is active. 9566abaa0c9SPierre Ossman */ 95771578a1eSMichal Miroslaw if (!reinit) { 9589f6e0bffSLars-Peter Clausen int ro = mmc_sd_get_ro(host); 95971578a1eSMichal Miroslaw 96071578a1eSMichal Miroslaw if (ro < 0) { 9616606110dSJoe Perches pr_warn("%s: host does not support reading read-only switch, assuming write-enable\n", 96271578a1eSMichal Miroslaw mmc_hostname(host)); 96371578a1eSMichal Miroslaw } else if (ro > 0) { 96471578a1eSMichal Miroslaw mmc_card_set_readonly(card); 96571578a1eSMichal Miroslaw } 96671578a1eSMichal Miroslaw } 96771578a1eSMichal Miroslaw 96871578a1eSMichal Miroslaw return 0; 96971578a1eSMichal Miroslaw } 97071578a1eSMichal Miroslaw 97171578a1eSMichal Miroslaw unsigned mmc_sd_get_max_clock(struct mmc_card *card) 97271578a1eSMichal Miroslaw { 97371578a1eSMichal Miroslaw unsigned max_dtr = (unsigned int)-1; 9746abaa0c9SPierre Ossman 975cdc99179SSeungwon Jeon if (mmc_card_hs(card)) { 9766abaa0c9SPierre Ossman if (max_dtr > card->sw_caps.hs_max_dtr) 9776abaa0c9SPierre Ossman max_dtr = card->sw_caps.hs_max_dtr; 9786abaa0c9SPierre Ossman } else if (max_dtr > card->csd.max_dtr) { 9796abaa0c9SPierre Ossman max_dtr = card->csd.max_dtr; 9806abaa0c9SPierre Ossman } 9816abaa0c9SPierre Ossman 98271578a1eSMichal Miroslaw return max_dtr; 98371578a1eSMichal Miroslaw } 98471578a1eSMichal Miroslaw 9856a11fc47SAdrian Hunter static bool mmc_sd_card_using_v18(struct mmc_card *card) 9866a11fc47SAdrian Hunter { 9876a11fc47SAdrian Hunter /* 9886a11fc47SAdrian Hunter * According to the SD spec., the Bus Speed Mode (function group 1) bits 9896a11fc47SAdrian Hunter * 2 to 4 are zero if the card is initialized at 3.3V signal level. Thus 9906a11fc47SAdrian Hunter * they can be used to determine if the card has already switched to 9916a11fc47SAdrian Hunter * 1.8V signaling. 9926a11fc47SAdrian Hunter */ 9936a11fc47SAdrian Hunter return card->sw_caps.sd3_bus_mode & 9946a11fc47SAdrian Hunter (SD_MODE_UHS_SDR50 | SD_MODE_UHS_SDR104 | SD_MODE_UHS_DDR50); 9956a11fc47SAdrian Hunter } 9966a11fc47SAdrian Hunter 99771578a1eSMichal Miroslaw /* 99871578a1eSMichal Miroslaw * Handle the detection and initialisation of a card. 99971578a1eSMichal Miroslaw * 100071578a1eSMichal Miroslaw * In the case of a resume, "oldcard" will contain the card 100171578a1eSMichal Miroslaw * we're trying to reinitialise. 100271578a1eSMichal Miroslaw */ 100371578a1eSMichal Miroslaw static int mmc_sd_init_card(struct mmc_host *host, u32 ocr, 100471578a1eSMichal Miroslaw struct mmc_card *oldcard) 100571578a1eSMichal Miroslaw { 100671578a1eSMichal Miroslaw struct mmc_card *card; 100771578a1eSMichal Miroslaw int err; 100871578a1eSMichal Miroslaw u32 cid[4]; 1009d6d50a15SArindam Nath u32 rocr = 0; 10106a11fc47SAdrian Hunter bool v18_fixup_failed = false; 101171578a1eSMichal Miroslaw 101271578a1eSMichal Miroslaw WARN_ON(!host->claimed); 10136a11fc47SAdrian Hunter retry: 1014d6d50a15SArindam Nath err = mmc_sd_get_cid(host, ocr, cid, &rocr); 101571578a1eSMichal Miroslaw if (err) 101671578a1eSMichal Miroslaw return err; 101771578a1eSMichal Miroslaw 101871578a1eSMichal Miroslaw if (oldcard) { 1019099b6481Shongjiefang if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) { 1020099b6481Shongjiefang pr_debug("%s: Perhaps the card was replaced\n", 1021099b6481Shongjiefang mmc_hostname(host)); 102271578a1eSMichal Miroslaw return -ENOENT; 1023099b6481Shongjiefang } 102471578a1eSMichal Miroslaw 102571578a1eSMichal Miroslaw card = oldcard; 102671578a1eSMichal Miroslaw } else { 102771578a1eSMichal Miroslaw /* 102871578a1eSMichal Miroslaw * Allocate card structure. 102971578a1eSMichal Miroslaw */ 103071578a1eSMichal Miroslaw card = mmc_alloc_card(host, &sd_type); 103171578a1eSMichal Miroslaw if (IS_ERR(card)) 103271578a1eSMichal Miroslaw return PTR_ERR(card); 103371578a1eSMichal Miroslaw 103469041150SUlf Hansson card->ocr = ocr; 103571578a1eSMichal Miroslaw card->type = MMC_TYPE_SD; 103671578a1eSMichal Miroslaw memcpy(card->raw_cid, cid, sizeof(card->raw_cid)); 103771578a1eSMichal Miroslaw } 103871578a1eSMichal Miroslaw 103971578a1eSMichal Miroslaw /* 1040eac86321SDoug Anderson * Call the optional HC's init_card function to handle quirks. 1041eac86321SDoug Anderson */ 1042eac86321SDoug Anderson if (host->ops->init_card) 1043eac86321SDoug Anderson host->ops->init_card(host, card); 1044eac86321SDoug Anderson 1045eac86321SDoug Anderson /* 104671578a1eSMichal Miroslaw * For native busses: get card RCA and quit open drain mode. 104771578a1eSMichal Miroslaw */ 104871578a1eSMichal Miroslaw if (!mmc_host_is_spi(host)) { 104971578a1eSMichal Miroslaw err = mmc_send_relative_addr(host, &card->rca); 105071578a1eSMichal Miroslaw if (err) 10517fca9675SWei WANG goto free_card; 105271578a1eSMichal Miroslaw } 105371578a1eSMichal Miroslaw 105471578a1eSMichal Miroslaw if (!oldcard) { 1055bd7342feSYue Hu err = mmc_sd_get_csd(card); 105671578a1eSMichal Miroslaw if (err) 10577fca9675SWei WANG goto free_card; 105871578a1eSMichal Miroslaw 105971578a1eSMichal Miroslaw mmc_decode_cid(card); 106071578a1eSMichal Miroslaw } 106171578a1eSMichal Miroslaw 106271578a1eSMichal Miroslaw /* 10633d705d14SSascha Hauer * handling only for cards supporting DSR and hosts requesting 10643d705d14SSascha Hauer * DSR configuration 10653d705d14SSascha Hauer */ 10663d705d14SSascha Hauer if (card->csd.dsr_imp && host->dsr_req) 10673d705d14SSascha Hauer mmc_set_dsr(host); 10683d705d14SSascha Hauer 10693d705d14SSascha Hauer /* 107071578a1eSMichal Miroslaw * Select card, as all following commands rely on that. 107171578a1eSMichal Miroslaw */ 107271578a1eSMichal Miroslaw if (!mmc_host_is_spi(host)) { 107371578a1eSMichal Miroslaw err = mmc_select_card(card); 107471578a1eSMichal Miroslaw if (err) 10757fca9675SWei WANG goto free_card; 107671578a1eSMichal Miroslaw } 107771578a1eSMichal Miroslaw 107871578a1eSMichal Miroslaw err = mmc_sd_setup_card(host, card, oldcard != NULL); 107971578a1eSMichal Miroslaw if (err) 108071578a1eSMichal Miroslaw goto free_card; 108171578a1eSMichal Miroslaw 10826a11fc47SAdrian Hunter /* 10836a11fc47SAdrian Hunter * If the card has not been power cycled, it may still be using 1.8V 10846a11fc47SAdrian Hunter * signaling. Detect that situation and try to initialize a UHS-I (1.8V) 10856a11fc47SAdrian Hunter * transfer mode. 10866a11fc47SAdrian Hunter */ 10876a11fc47SAdrian Hunter if (!v18_fixup_failed && !mmc_host_is_spi(host) && mmc_host_uhs(host) && 10886a11fc47SAdrian Hunter mmc_sd_card_using_v18(card) && 10896a11fc47SAdrian Hunter host->ios.signal_voltage != MMC_SIGNAL_VOLTAGE_180) { 10906a11fc47SAdrian Hunter /* 10916a11fc47SAdrian Hunter * Re-read switch information in case it has changed since 10926a11fc47SAdrian Hunter * oldcard was initialized. 10936a11fc47SAdrian Hunter */ 10946a11fc47SAdrian Hunter if (oldcard) { 10956a11fc47SAdrian Hunter err = mmc_read_switch(card); 10966a11fc47SAdrian Hunter if (err) 10976a11fc47SAdrian Hunter goto free_card; 10986a11fc47SAdrian Hunter } 10996a11fc47SAdrian Hunter if (mmc_sd_card_using_v18(card)) { 11006a11fc47SAdrian Hunter if (mmc_host_set_uhs_voltage(host) || 11016a11fc47SAdrian Hunter mmc_sd_init_uhs_card(card)) { 11026a11fc47SAdrian Hunter v18_fixup_failed = true; 11036a11fc47SAdrian Hunter mmc_power_cycle(host, ocr); 11046a11fc47SAdrian Hunter if (!oldcard) 11056a11fc47SAdrian Hunter mmc_remove_card(card); 11066a11fc47SAdrian Hunter goto retry; 11076a11fc47SAdrian Hunter } 11086a11fc47SAdrian Hunter goto done; 11096a11fc47SAdrian Hunter } 11106a11fc47SAdrian Hunter } 11116a11fc47SAdrian Hunter 1112d6d50a15SArindam Nath /* Initialization sequence for UHS-I cards */ 1113d6743a8aSShawn Lin if (rocr & SD_ROCR_S18A && mmc_host_uhs(host)) { 1114d6d50a15SArindam Nath err = mmc_sd_init_uhs_card(card); 1115d6d50a15SArindam Nath if (err) 1116d6d50a15SArindam Nath goto free_card; 1117d6d50a15SArindam Nath } else { 111871578a1eSMichal Miroslaw /* 111971578a1eSMichal Miroslaw * Attempt to change to high-speed (if supported) 112071578a1eSMichal Miroslaw */ 112171578a1eSMichal Miroslaw err = mmc_sd_switch_hs(card); 112271578a1eSMichal Miroslaw if (err > 0) 1123cdc99179SSeungwon Jeon mmc_set_timing(card->host, MMC_TIMING_SD_HS); 112471578a1eSMichal Miroslaw else if (err) 112571578a1eSMichal Miroslaw goto free_card; 112671578a1eSMichal Miroslaw 112771578a1eSMichal Miroslaw /* 112871578a1eSMichal Miroslaw * Set bus speed. 112971578a1eSMichal Miroslaw */ 113071578a1eSMichal Miroslaw mmc_set_clock(host, mmc_sd_get_max_clock(card)); 11316abaa0c9SPierre Ossman 11326abaa0c9SPierre Ossman /* 11336abaa0c9SPierre Ossman * Switch to wider bus (if supported). 11346abaa0c9SPierre Ossman */ 113571651297SPierre Ossman if ((host->caps & MMC_CAP_4_BIT_DATA) && 11366abaa0c9SPierre Ossman (card->scr.bus_widths & SD_SCR_BUS_WIDTH_4)) { 11376abaa0c9SPierre Ossman err = mmc_app_set_bus_width(card, MMC_BUS_WIDTH_4); 113817b0429dSPierre Ossman if (err) 11396abaa0c9SPierre Ossman goto free_card; 11406abaa0c9SPierre Ossman 11416abaa0c9SPierre Ossman mmc_set_bus_width(host, MMC_BUS_WIDTH_4); 11426abaa0c9SPierre Ossman } 1143d6d50a15SArindam Nath } 1144247cfe53SKyle Roeschley 1145045d705dSBaolin Wang if (host->cqe_ops && !host->cqe_enabled) { 1146045d705dSBaolin Wang err = host->cqe_ops->cqe_enable(host, card); 1147045d705dSBaolin Wang if (!err) { 1148045d705dSBaolin Wang host->cqe_enabled = true; 1149045d705dSBaolin Wang host->hsq_enabled = true; 1150045d705dSBaolin Wang pr_info("%s: Host Software Queue enabled\n", 1151045d705dSBaolin Wang mmc_hostname(host)); 1152045d705dSBaolin Wang } 1153045d705dSBaolin Wang } 1154045d705dSBaolin Wang 1155247cfe53SKyle Roeschley if (host->caps2 & MMC_CAP2_AVOID_3_3V && 1156247cfe53SKyle Roeschley host->ios.signal_voltage == MMC_SIGNAL_VOLTAGE_330) { 1157247cfe53SKyle Roeschley pr_err("%s: Host failed to negotiate down from 3.3V\n", 1158247cfe53SKyle Roeschley mmc_hostname(host)); 1159247cfe53SKyle Roeschley err = -EINVAL; 1160247cfe53SKyle Roeschley goto free_card; 1161247cfe53SKyle Roeschley } 11626a11fc47SAdrian Hunter done: 11636abaa0c9SPierre Ossman host->card = card; 116417b0429dSPierre Ossman return 0; 11656abaa0c9SPierre Ossman 11666abaa0c9SPierre Ossman free_card: 11676abaa0c9SPierre Ossman if (!oldcard) 11686abaa0c9SPierre Ossman mmc_remove_card(card); 11696abaa0c9SPierre Ossman 1170adf66a0dSPierre Ossman return err; 11716abaa0c9SPierre Ossman } 11726abaa0c9SPierre Ossman 11736abaa0c9SPierre Ossman /* 11747ea239d9SPierre Ossman * Host is being removed. Free up the current card. 11757ea239d9SPierre Ossman */ 11767ea239d9SPierre Ossman static void mmc_sd_remove(struct mmc_host *host) 11777ea239d9SPierre Ossman { 11787ea239d9SPierre Ossman mmc_remove_card(host->card); 11797ea239d9SPierre Ossman host->card = NULL; 11807ea239d9SPierre Ossman } 11817ea239d9SPierre Ossman 11827ea239d9SPierre Ossman /* 1183d3049504SAdrian Hunter * Card detection - card is alive. 1184d3049504SAdrian Hunter */ 1185d3049504SAdrian Hunter static int mmc_sd_alive(struct mmc_host *host) 1186d3049504SAdrian Hunter { 1187d3049504SAdrian Hunter return mmc_send_status(host->card, NULL); 1188d3049504SAdrian Hunter } 1189d3049504SAdrian Hunter 1190d3049504SAdrian Hunter /* 11917ea239d9SPierre Ossman * Card detection callback from host. 11927ea239d9SPierre Ossman */ 11937ea239d9SPierre Ossman static void mmc_sd_detect(struct mmc_host *host) 11947ea239d9SPierre Ossman { 11957ea239d9SPierre Ossman int err; 11967ea239d9SPierre Ossman 11976c0cedd1SAdrian Hunter mmc_get_card(host->card, NULL); 11987ea239d9SPierre Ossman 11997ea239d9SPierre Ossman /* 12007ea239d9SPierre Ossman * Just check if our card has been removed. 12017ea239d9SPierre Ossman */ 1202d3049504SAdrian Hunter err = _mmc_detect_card_removed(host); 12037ea239d9SPierre Ossman 12046c0cedd1SAdrian Hunter mmc_put_card(host->card, NULL); 12057ea239d9SPierre Ossman 120617b0429dSPierre Ossman if (err) { 12074101c16aSPierre Ossman mmc_sd_remove(host); 12087ea239d9SPierre Ossman 12097ea239d9SPierre Ossman mmc_claim_host(host); 12107ea239d9SPierre Ossman mmc_detach_bus(host); 12117f7e4129SUlf Hansson mmc_power_off(host); 12127ea239d9SPierre Ossman mmc_release_host(host); 12137ea239d9SPierre Ossman } 12147ea239d9SPierre Ossman } 12157ea239d9SPierre Ossman 12160cb403a2SUlf Hansson static int _mmc_sd_suspend(struct mmc_host *host) 12176abaa0c9SPierre Ossman { 121885e727edSJaehoon Chung int err = 0; 121985e727edSJaehoon Chung 12206abaa0c9SPierre Ossman mmc_claim_host(host); 12219ec775f7SUlf Hansson 12229ec775f7SUlf Hansson if (mmc_card_suspended(host->card)) 12239ec775f7SUlf Hansson goto out; 12249ec775f7SUlf Hansson 1225af517150SDavid Brownell if (!mmc_host_is_spi(host)) 122685e727edSJaehoon Chung err = mmc_deselect_cards(host); 1227cdc99179SSeungwon Jeon 12289ec775f7SUlf Hansson if (!err) { 122974590263SUlf Hansson mmc_power_off(host); 12309ec775f7SUlf Hansson mmc_card_set_suspended(host->card); 12319ec775f7SUlf Hansson } 123295cdfb72SNicolas Pitre 12339ec775f7SUlf Hansson out: 12349ec775f7SUlf Hansson mmc_release_host(host); 123585e727edSJaehoon Chung return err; 12366abaa0c9SPierre Ossman } 12376abaa0c9SPierre Ossman 12386abaa0c9SPierre Ossman /* 12390cb403a2SUlf Hansson * Callback for suspend 12400cb403a2SUlf Hansson */ 12410cb403a2SUlf Hansson static int mmc_sd_suspend(struct mmc_host *host) 12420cb403a2SUlf Hansson { 12430cb403a2SUlf Hansson int err; 12440cb403a2SUlf Hansson 12450cb403a2SUlf Hansson err = _mmc_sd_suspend(host); 12460cb403a2SUlf Hansson if (!err) { 12470cb403a2SUlf Hansson pm_runtime_disable(&host->card->dev); 12480cb403a2SUlf Hansson pm_runtime_set_suspended(&host->card->dev); 12490cb403a2SUlf Hansson } 12500cb403a2SUlf Hansson 12510cb403a2SUlf Hansson return err; 12520cb403a2SUlf Hansson } 12530cb403a2SUlf Hansson 12540cb403a2SUlf Hansson /* 12556abaa0c9SPierre Ossman * This function tries to determine if the same card is still present 12566abaa0c9SPierre Ossman * and, if so, restore all state to it. 12576abaa0c9SPierre Ossman */ 12580cb403a2SUlf Hansson static int _mmc_sd_resume(struct mmc_host *host) 12596abaa0c9SPierre Ossman { 12609ec775f7SUlf Hansson int err = 0; 12616abaa0c9SPierre Ossman 12626abaa0c9SPierre Ossman mmc_claim_host(host); 12639ec775f7SUlf Hansson 12649ec775f7SUlf Hansson if (!mmc_card_suspended(host->card)) 12659ec775f7SUlf Hansson goto out; 12669ec775f7SUlf Hansson 126769041150SUlf Hansson mmc_power_up(host, host->card->ocr); 126869041150SUlf Hansson err = mmc_sd_init_card(host, host->card->ocr, host->card); 12699ec775f7SUlf Hansson mmc_card_clr_suspended(host->card); 12702986d0bfSPierre Ossman 12719ec775f7SUlf Hansson out: 12729ec775f7SUlf Hansson mmc_release_host(host); 127395cdfb72SNicolas Pitre return err; 12746abaa0c9SPierre Ossman } 12756abaa0c9SPierre Ossman 1276c4d770d7SUlf Hansson /* 12770cb403a2SUlf Hansson * Callback for resume 12780cb403a2SUlf Hansson */ 12790cb403a2SUlf Hansson static int mmc_sd_resume(struct mmc_host *host) 12800cb403a2SUlf Hansson { 12810cb403a2SUlf Hansson pm_runtime_enable(&host->card->dev); 1282c29536e8SUlf Hansson return 0; 12830cb403a2SUlf Hansson } 12840cb403a2SUlf Hansson 12850cb403a2SUlf Hansson /* 1286c4d770d7SUlf Hansson * Callback for runtime_suspend. 1287c4d770d7SUlf Hansson */ 1288c4d770d7SUlf Hansson static int mmc_sd_runtime_suspend(struct mmc_host *host) 1289c4d770d7SUlf Hansson { 1290c4d770d7SUlf Hansson int err; 1291c4d770d7SUlf Hansson 1292c4d770d7SUlf Hansson if (!(host->caps & MMC_CAP_AGGRESSIVE_PM)) 1293c4d770d7SUlf Hansson return 0; 1294c4d770d7SUlf Hansson 12950cb403a2SUlf Hansson err = _mmc_sd_suspend(host); 12960cc81a8cSUlf Hansson if (err) 1297f42cf8d6SMasanari Iida pr_err("%s: error %d doing aggressive suspend\n", 1298c4d770d7SUlf Hansson mmc_hostname(host), err); 1299c4d770d7SUlf Hansson 1300c4d770d7SUlf Hansson return err; 1301c4d770d7SUlf Hansson } 1302c4d770d7SUlf Hansson 1303c4d770d7SUlf Hansson /* 1304c4d770d7SUlf Hansson * Callback for runtime_resume. 1305c4d770d7SUlf Hansson */ 1306c4d770d7SUlf Hansson static int mmc_sd_runtime_resume(struct mmc_host *host) 1307c4d770d7SUlf Hansson { 1308c4d770d7SUlf Hansson int err; 1309c4d770d7SUlf Hansson 13100cb403a2SUlf Hansson err = _mmc_sd_resume(host); 1311520322d9SAdrian Hunter if (err && err != -ENOMEDIUM) 1312c29536e8SUlf Hansson pr_err("%s: error %d doing runtime resume\n", 1313c4d770d7SUlf Hansson mmc_hostname(host), err); 1314c4d770d7SUlf Hansson 1315c4d770d7SUlf Hansson return 0; 1316c4d770d7SUlf Hansson } 1317c4d770d7SUlf Hansson 13183a3db603SUlf Hansson static int mmc_sd_hw_reset(struct mmc_host *host) 1319dc0ecfefSJohan Rudholm { 1320dc0ecfefSJohan Rudholm mmc_power_cycle(host, host->card->ocr); 13213056c49cSUlf Hansson return mmc_sd_init_card(host, host->card->ocr, host->card); 1322dc0ecfefSJohan Rudholm } 1323dc0ecfefSJohan Rudholm 13249feae246SAdrian Hunter static const struct mmc_bus_ops mmc_sd_ops = { 13259feae246SAdrian Hunter .remove = mmc_sd_remove, 13269feae246SAdrian Hunter .detect = mmc_sd_detect, 1327c4d770d7SUlf Hansson .runtime_suspend = mmc_sd_runtime_suspend, 1328c4d770d7SUlf Hansson .runtime_resume = mmc_sd_runtime_resume, 13299feae246SAdrian Hunter .suspend = mmc_sd_suspend, 13309feae246SAdrian Hunter .resume = mmc_sd_resume, 1331d3049504SAdrian Hunter .alive = mmc_sd_alive, 13325992e786SUlf Hansson .shutdown = mmc_sd_suspend, 13333a3db603SUlf Hansson .hw_reset = mmc_sd_hw_reset, 13349feae246SAdrian Hunter }; 13359feae246SAdrian Hunter 13367ea239d9SPierre Ossman /* 13377ea239d9SPierre Ossman * Starting point for SD card init. 13387ea239d9SPierre Ossman */ 1339807e8e40SAndy Ross int mmc_attach_sd(struct mmc_host *host) 13407ea239d9SPierre Ossman { 13417ea239d9SPierre Ossman int err; 134269041150SUlf Hansson u32 ocr, rocr; 13437ea239d9SPierre Ossman 1344d84075c8SPierre Ossman WARN_ON(!host->claimed); 13457ea239d9SPierre Ossman 1346807e8e40SAndy Ross err = mmc_send_app_op_cond(host, 0, &ocr); 1347807e8e40SAndy Ross if (err) 1348807e8e40SAndy Ross return err; 1349807e8e40SAndy Ross 13502501c917SUlf Hansson mmc_attach_bus(host, &mmc_sd_ops); 13518f230f45STakashi Iwai if (host->ocr_avail_sd) 13528f230f45STakashi Iwai host->ocr_avail = host->ocr_avail_sd; 13537ea239d9SPierre Ossman 135455556da0SPhilip Langdale /* 1355af517150SDavid Brownell * We need to get OCR a different way for SPI. 1356af517150SDavid Brownell */ 1357af517150SDavid Brownell if (mmc_host_is_spi(host)) { 1358af517150SDavid Brownell mmc_go_idle(host); 1359af517150SDavid Brownell 1360af517150SDavid Brownell err = mmc_spi_read_ocr(host, 0, &ocr); 1361af517150SDavid Brownell if (err) 1362af517150SDavid Brownell goto err; 1363af517150SDavid Brownell } 1364af517150SDavid Brownell 136572741084SUlf Hansson /* 136672741084SUlf Hansson * Some SD cards claims an out of spec VDD voltage range. Let's treat 136772741084SUlf Hansson * these bits as being in-valid and especially also bit7. 136872741084SUlf Hansson */ 136972741084SUlf Hansson ocr &= ~0x7FFF; 137072741084SUlf Hansson 137169041150SUlf Hansson rocr = mmc_select_voltage(host, ocr); 13727ea239d9SPierre Ossman 13737ea239d9SPierre Ossman /* 13747ea239d9SPierre Ossman * Can we support the voltage(s) of the card(s)? 13757ea239d9SPierre Ossman */ 137669041150SUlf Hansson if (!rocr) { 1377109b5bedSPierre Ossman err = -EINVAL; 13787ea239d9SPierre Ossman goto err; 1379109b5bedSPierre Ossman } 13807ea239d9SPierre Ossman 13817ea239d9SPierre Ossman /* 13826abaa0c9SPierre Ossman * Detect and init the card. 13837ea239d9SPierre Ossman */ 138469041150SUlf Hansson err = mmc_sd_init_card(host, rocr, NULL); 138517b0429dSPierre Ossman if (err) 13867ea239d9SPierre Ossman goto err; 13877ea239d9SPierre Ossman 13887ea239d9SPierre Ossman mmc_release_host(host); 13894101c16aSPierre Ossman err = mmc_add_card(host->card); 13907ea239d9SPierre Ossman if (err) 13912986d0bfSPierre Ossman goto remove_card; 13927ea239d9SPierre Ossman 13932860d060SSergei Shtylyov mmc_claim_host(host); 13947ea239d9SPierre Ossman return 0; 13957ea239d9SPierre Ossman 13962986d0bfSPierre Ossman remove_card: 13976abaa0c9SPierre Ossman mmc_remove_card(host->card); 13987ea239d9SPierre Ossman host->card = NULL; 13992986d0bfSPierre Ossman mmc_claim_host(host); 14007ea239d9SPierre Ossman err: 14017ea239d9SPierre Ossman mmc_detach_bus(host); 14027ea239d9SPierre Ossman 1403a3c76eb9SGirish K S pr_err("%s: error %d whilst initialising SD card\n", 1404109b5bedSPierre Ossman mmc_hostname(host), err); 1405109b5bedSPierre Ossman 1406adf66a0dSPierre Ossman return err; 14077ea239d9SPierre Ossman } 1408