sd.c revision f0d89972b01798cf9d245dfa1cacfa0ee78a3593
17ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman/* 270f10482c668301c483acded13bf68780ad352b9Pierre Ossman * linux/drivers/mmc/core/sd.c 37ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * 47ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * Copyright (C) 2003-2004 Russell King, All Rights Reserved. 57ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * SD support Copyright (C) 2004 Ian Molton, All Rights Reserved. 67ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * Copyright (C) 2005-2007 Pierre Ossman, All Rights Reserved. 77ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * 87ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * This program is free software; you can redistribute it and/or modify 97ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * it under the terms of the GNU General Public License version 2 as 107ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * published by the Free Software Foundation. 117ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 127ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 137ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman#include <linux/err.h> 145a0e3ad6af8660be21ca98a971cd00f331318c05Tejun Heo#include <linux/slab.h> 157ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 167ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman#include <linux/mmc/host.h> 177ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman#include <linux/mmc/card.h> 187ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman#include <linux/mmc/mmc.h> 193373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman#include <linux/mmc/sd.h> 207ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 217ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman#include "core.h" 224101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossman#include "bus.h" 237ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman#include "mmc_ops.h" 24ce1014965ae2538e7447b19879bd0e8109690b79Mark Brown#include "sd.h" 257ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman#include "sd_ops.h" 267ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 277ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossmanstatic const unsigned int tran_exp[] = { 287ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 10000, 100000, 1000000, 10000000, 297ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 0, 0, 0, 0 307ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman}; 317ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 327ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossmanstatic const unsigned char tran_mant[] = { 337ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 0, 10, 12, 13, 15, 20, 25, 30, 347ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 35, 40, 45, 50, 55, 60, 70, 80, 357ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman}; 367ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 377ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossmanstatic const unsigned int tacc_exp[] = { 387ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, 397ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman}; 407ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 417ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossmanstatic const unsigned int tacc_mant[] = { 427ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 0, 10, 12, 13, 15, 20, 25, 30, 437ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 35, 40, 45, 50, 55, 60, 70, 80, 447ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman}; 457ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 467ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman#define UNSTUFF_BITS(resp,start,size) \ 477ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman ({ \ 487ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman const int __size = size; \ 497ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman const u32 __mask = (__size < 32 ? 1 << __size : 0) - 1; \ 507ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman const int __off = 3 - ((start) / 32); \ 517ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman const int __shft = (start) & 31; \ 527ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman u32 __res; \ 537ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman \ 547ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman __res = resp[__off] >> __shft; \ 557ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman if (__size + __shft > 32) \ 567ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman __res |= resp[__off-1] << ((32 - __shft) % 32); \ 577ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman __res & __mask; \ 587ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman }) 597ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 607ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman/* 617ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * Given the decoded CSD structure, decode the raw CID to our CID structure. 627ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 6371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslawvoid mmc_decode_cid(struct mmc_card *card) 647ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman{ 657ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman u32 *resp = card->raw_cid; 667ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 677ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman memset(&card->cid, 0, sizeof(struct mmc_cid)); 687ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 697ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman /* 707ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * SD doesn't currently have a version field so we will 717ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * have to assume we can parse this. 727ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 737ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.manfid = UNSTUFF_BITS(resp, 120, 8); 747ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.oemid = UNSTUFF_BITS(resp, 104, 16); 757ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); 767ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); 777ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); 787ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); 797ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); 807ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.hwrev = UNSTUFF_BITS(resp, 60, 4); 817ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.fwrev = UNSTUFF_BITS(resp, 56, 4); 827ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.serial = UNSTUFF_BITS(resp, 24, 32); 837ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.year = UNSTUFF_BITS(resp, 12, 8); 847ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.month = UNSTUFF_BITS(resp, 8, 4); 857ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 867ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.year += 2000; /* SD cards year offset */ 877ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman} 887ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 897ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman/* 907ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * Given a 128-bit response, decode to our card CSD structure. 917ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 92bd766312618d2ecc85bce663f95faec601447ecbPierre Ossmanstatic int mmc_decode_csd(struct mmc_card *card) 937ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman{ 947ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman struct mmc_csd *csd = &card->csd; 957ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman unsigned int e, m, csd_struct; 967ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman u32 *resp = card->raw_csd; 977ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 987ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd_struct = UNSTUFF_BITS(resp, 126, 2); 997ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1007ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman switch (csd_struct) { 1017ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman case 0: 1027ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman m = UNSTUFF_BITS(resp, 115, 4); 1037ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman e = UNSTUFF_BITS(resp, 112, 3); 1047ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->tacc_ns = (tacc_exp[e] * tacc_mant[m] + 9) / 10; 1057ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->tacc_clks = UNSTUFF_BITS(resp, 104, 8) * 100; 1067ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1077ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman m = UNSTUFF_BITS(resp, 99, 4); 1087ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman e = UNSTUFF_BITS(resp, 96, 3); 1097ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->max_dtr = tran_exp[e] * tran_mant[m]; 1107ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->cmdclass = UNSTUFF_BITS(resp, 84, 12); 1117ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1127ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman e = UNSTUFF_BITS(resp, 47, 3); 1137ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman m = UNSTUFF_BITS(resp, 62, 12); 1147ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->capacity = (1 + m) << (e + 2); 1157ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1167ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->read_blkbits = UNSTUFF_BITS(resp, 80, 4); 1177ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->read_partial = UNSTUFF_BITS(resp, 79, 1); 1187ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->write_misalign = UNSTUFF_BITS(resp, 78, 1); 1197ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->read_misalign = UNSTUFF_BITS(resp, 77, 1); 1207ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->r2w_factor = UNSTUFF_BITS(resp, 26, 3); 1217ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->write_blkbits = UNSTUFF_BITS(resp, 22, 4); 1227ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->write_partial = UNSTUFF_BITS(resp, 21, 1); 123dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter 124dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter if (UNSTUFF_BITS(resp, 46, 1)) { 125dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter csd->erase_size = 1; 126dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter } else if (csd->write_blkbits >= 9) { 127dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter csd->erase_size = UNSTUFF_BITS(resp, 39, 7) + 1; 128dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter csd->erase_size <<= csd->write_blkbits - 9; 129dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter } 1307ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman break; 1317ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman case 1: 1327ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman /* 1333a3035114307cd55e024662bb295a87b849f0bd4Arindam Nath * This is a block-addressed SDHC or SDXC card. Most 1347ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * interesting fields are unused and have fixed 1357ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * values. To avoid getting tripped by buggy cards, 1367ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * we assume those fixed values ourselves. 1377ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 1387ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman mmc_card_set_blockaddr(card); 1397ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1407ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->tacc_ns = 0; /* Unused */ 1417ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->tacc_clks = 0; /* Unused */ 1427ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1437ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman m = UNSTUFF_BITS(resp, 99, 4); 1447ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman e = UNSTUFF_BITS(resp, 96, 3); 1457ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->max_dtr = tran_exp[e] * tran_mant[m]; 1467ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->cmdclass = UNSTUFF_BITS(resp, 84, 12); 1473a3035114307cd55e024662bb295a87b849f0bd4Arindam Nath csd->c_size = UNSTUFF_BITS(resp, 48, 22); 1483a3035114307cd55e024662bb295a87b849f0bd4Arindam Nath 1493a3035114307cd55e024662bb295a87b849f0bd4Arindam Nath /* SDXC cards have a minimum C_SIZE of 0x00FFFF */ 1503a3035114307cd55e024662bb295a87b849f0bd4Arindam Nath if (csd->c_size >= 0xFFFF) 1513a3035114307cd55e024662bb295a87b849f0bd4Arindam Nath mmc_card_set_ext_capacity(card); 1527ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1537ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman m = UNSTUFF_BITS(resp, 48, 22); 1547ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->capacity = (1 + m) << 10; 1557ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1567ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->read_blkbits = 9; 1577ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->read_partial = 0; 1587ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->write_misalign = 0; 1597ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->read_misalign = 0; 1607ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->r2w_factor = 4; /* Unused */ 1617ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->write_blkbits = 9; 1627ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->write_partial = 0; 163dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter csd->erase_size = 1; 1647ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman break; 1657ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman default: 166facba9179e3cd5fa91ff40bbc555c5cd4c101092Pierre Ossman printk(KERN_ERR "%s: unrecognised CSD structure version %d\n", 1677ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman mmc_hostname(card->host), csd_struct); 168bd766312618d2ecc85bce663f95faec601447ecbPierre Ossman return -EINVAL; 1697ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman } 170bd766312618d2ecc85bce663f95faec601447ecbPierre Ossman 171dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter card->erase_size = csd->erase_size; 172dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter 173bd766312618d2ecc85bce663f95faec601447ecbPierre Ossman return 0; 1747ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman} 1757ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1767ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman/* 1777ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * Given a 64-bit response, decode to our card SCR structure. 1787ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 179bd766312618d2ecc85bce663f95faec601447ecbPierre Ossmanstatic int mmc_decode_scr(struct mmc_card *card) 1807ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman{ 1817ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman struct sd_scr *scr = &card->scr; 1827ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman unsigned int scr_struct; 1837ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman u32 resp[4]; 1847ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1857ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman resp[3] = card->raw_scr[1]; 1867ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman resp[2] = card->raw_scr[0]; 1877ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1887ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman scr_struct = UNSTUFF_BITS(resp, 60, 4); 1897ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman if (scr_struct != 0) { 190facba9179e3cd5fa91ff40bbc555c5cd4c101092Pierre Ossman printk(KERN_ERR "%s: unrecognised SCR structure version %d\n", 1917ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman mmc_hostname(card->host), scr_struct); 192bd766312618d2ecc85bce663f95faec601447ecbPierre Ossman return -EINVAL; 1937ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman } 1947ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1957ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman scr->sda_vsn = UNSTUFF_BITS(resp, 56, 4); 1967ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman scr->bus_widths = UNSTUFF_BITS(resp, 48, 4); 197013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath if (scr->sda_vsn == SCR_SPEC_VER_2) 198013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath /* Check if Physical Layer Spec v3.0 is supported */ 199013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath scr->sda_spec3 = UNSTUFF_BITS(resp, 47, 1); 200bd766312618d2ecc85bce663f95faec601447ecbPierre Ossman 201dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter if (UNSTUFF_BITS(resp, 55, 1)) 202dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter card->erased_byte = 0xFF; 203dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter else 204dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter card->erased_byte = 0x0; 205dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter 206f0d89972b01798cf9d245dfa1cacfa0ee78a3593Andrei Warkentin if (scr->sda_spec3) 207f0d89972b01798cf9d245dfa1cacfa0ee78a3593Andrei Warkentin scr->cmds = UNSTUFF_BITS(resp, 32, 2); 208bd766312618d2ecc85bce663f95faec601447ecbPierre Ossman return 0; 2097ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman} 2107ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 2117ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman/* 212dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter * Fetch and process SD Status register. 213dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter */ 214dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunterstatic int mmc_read_ssr(struct mmc_card *card) 215dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter{ 216dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter unsigned int au, es, et, eo; 217dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter int err, i; 218dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter u32 *ssr; 219dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter 220dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter if (!(card->csd.cmdclass & CCC_APP_SPEC)) { 221dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter printk(KERN_WARNING "%s: card lacks mandatory SD Status " 222dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter "function.\n", mmc_hostname(card->host)); 223dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter return 0; 224dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter } 225dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter 226dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter ssr = kmalloc(64, GFP_KERNEL); 227dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter if (!ssr) 228dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter return -ENOMEM; 229dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter 230dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter err = mmc_app_sd_status(card, ssr); 231dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter if (err) { 232dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter printk(KERN_WARNING "%s: problem reading SD Status " 233dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter "register.\n", mmc_hostname(card->host)); 234dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter err = 0; 235dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter goto out; 236dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter } 237dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter 238dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter for (i = 0; i < 16; i++) 239dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter ssr[i] = be32_to_cpu(ssr[i]); 240dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter 241dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter /* 242dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter * UNSTUFF_BITS only works with four u32s so we have to offset the 243dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter * bitfield positions accordingly. 244dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter */ 245dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter au = UNSTUFF_BITS(ssr, 428 - 384, 4); 246dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter if (au > 0 || au <= 9) { 247dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter card->ssr.au = 1 << (au + 4); 248dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter es = UNSTUFF_BITS(ssr, 408 - 384, 16); 249dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter et = UNSTUFF_BITS(ssr, 402 - 384, 6); 250dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter eo = UNSTUFF_BITS(ssr, 400 - 384, 2); 251dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter if (es && et) { 252dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter card->ssr.erase_timeout = (et * 1000) / es; 253dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter card->ssr.erase_offset = eo * 1000; 254dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter } 255dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter } else { 256dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter printk(KERN_WARNING "%s: SD Status: Invalid Allocation Unit " 257dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter "size.\n", mmc_hostname(card->host)); 258dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter } 259dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunterout: 260dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter kfree(ssr); 261dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter return err; 262dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter} 263dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter 264dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter/* 2651addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman * Fetches and decodes switch information 2667ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 2671addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossmanstatic int mmc_read_switch(struct mmc_card *card) 2687ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman{ 2697ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman int err; 2707ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman u8 *status; 2717ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 2723373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman if (card->scr.sda_vsn < SCR_SPEC_VER_1) 27317b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman return 0; 2743373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman 2753373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman if (!(card->csd.cmdclass & CCC_SWITCH)) { 2763373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman printk(KERN_WARNING "%s: card lacks mandatory switch " 2773373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman "function, performance might suffer.\n", 2783373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman mmc_hostname(card->host)); 27917b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman return 0; 2803373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman } 2813373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman 28217b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman err = -EIO; 2837ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 2847ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman status = kmalloc(64, GFP_KERNEL); 2857ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman if (!status) { 286facba9179e3cd5fa91ff40bbc555c5cd4c101092Pierre Ossman printk(KERN_ERR "%s: could not allocate a buffer for " 287013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath "switch capabilities.\n", 288013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath mmc_hostname(card->host)); 28917b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman return -ENOMEM; 2907ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman } 2917ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 292013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath /* Find out the supported Bus Speed Modes. */ 2937ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman err = mmc_sd_switch(card, 0, 0, 1, status); 29417b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (err) { 295013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath /* 296013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath * If the host or the card can't do the switch, 297013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath * fail more gracefully. 298013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath */ 299013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath if (err != -EINVAL && err != -ENOSYS && err != -EFAULT) 300adf66a0dc5e8be8d4e64f3c2114f9b175558235bPierre Ossman goto out; 301adf66a0dc5e8be8d4e64f3c2114f9b175558235bPierre Ossman 302013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath printk(KERN_WARNING "%s: problem reading Bus Speed modes.\n", 3033373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman mmc_hostname(card->host)); 30417b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman err = 0; 305adf66a0dc5e8be8d4e64f3c2114f9b175558235bPierre Ossman 3067ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman goto out; 3077ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman } 3087ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 309013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath if (card->scr.sda_spec3) { 310013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath card->sw_caps.sd3_bus_mode = status[13]; 311013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath 312013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath /* Find out Driver Strengths supported by the card */ 313013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath err = mmc_sd_switch(card, 0, 2, 1, status); 314013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath if (err) { 315013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath /* 316013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath * If the host or the card can't do the switch, 317013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath * fail more gracefully. 318013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath */ 319013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath if (err != -EINVAL && err != -ENOSYS && err != -EFAULT) 320013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath goto out; 321013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath 322013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath printk(KERN_WARNING "%s: problem reading " 323013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath "Driver Strength.\n", 324013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath mmc_hostname(card->host)); 325013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath err = 0; 326013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath 327013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath goto out; 328013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath } 329013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath 330013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath card->sw_caps.sd3_drv_type = status[9]; 331013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath 332013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath /* Find out Current Limits supported by the card */ 333013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath err = mmc_sd_switch(card, 0, 3, 1, status); 334013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath if (err) { 335013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath /* 336013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath * If the host or the card can't do the switch, 337013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath * fail more gracefully. 338013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath */ 339013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath if (err != -EINVAL && err != -ENOSYS && err != -EFAULT) 340013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath goto out; 341013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath 342013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath printk(KERN_WARNING "%s: problem reading " 343013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath "Current Limit.\n", 344013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath mmc_hostname(card->host)); 345013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath err = 0; 346013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath 347013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath goto out; 348013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath } 349013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath 350013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath card->sw_caps.sd3_curr_limit = status[7]; 351013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath } else { 352013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath if (status[13] & 0x02) 353013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath card->sw_caps.hs_max_dtr = 50000000; 354013909c4ffd16ded4895528b856fd8782df04dc6Arindam Nath } 3557ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 3561addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossmanout: 3571addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman kfree(status); 3581addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman 3591addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman return err; 3601addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman} 3611addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman 3621addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman/* 3631addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman * Test if the card supports high-speed mode and, if so, switch to it. 3641addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman */ 36571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslawint mmc_sd_switch_hs(struct mmc_card *card) 3661addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman{ 3671addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman int err; 3681addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman u8 *status; 3691addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman 3703373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman if (card->scr.sda_vsn < SCR_SPEC_VER_1) 37117b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman return 0; 3723373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman 3733373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman if (!(card->csd.cmdclass & CCC_SWITCH)) 37417b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman return 0; 3753373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman 3761addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman if (!(card->host->caps & MMC_CAP_SD_HIGHSPEED)) 37717b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman return 0; 3781addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman 3791addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman if (card->sw_caps.hs_max_dtr == 0) 38017b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman return 0; 3811addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman 38217b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman err = -EIO; 3831addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman 3841addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman status = kmalloc(64, GFP_KERNEL); 3851addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman if (!status) { 386facba9179e3cd5fa91ff40bbc555c5cd4c101092Pierre Ossman printk(KERN_ERR "%s: could not allocate a buffer for " 387facba9179e3cd5fa91ff40bbc555c5cd4c101092Pierre Ossman "switch capabilities.\n", mmc_hostname(card->host)); 38817b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman return -ENOMEM; 3891addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman } 3901addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman 3917ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman err = mmc_sd_switch(card, 1, 0, 1, status); 39217b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (err) 3937ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman goto out; 3947ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 3957ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman if ((status[16] & 0xF) != 1) { 3967ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman printk(KERN_WARNING "%s: Problem switching card " 3977ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman "into high-speed mode!\n", 3987ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman mmc_hostname(card->host)); 39971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw err = 0; 4007ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman } else { 40171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw err = 1; 4027ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman } 4037ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 4047ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossmanout: 4057ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman kfree(status); 4067ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 4077ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman return err; 4087ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman} 4097ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 410d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nathstatic int sd_select_driver_type(struct mmc_card *card, u8 *status) 411d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath{ 412d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath int host_drv_type = 0, card_drv_type = 0; 413d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath int err; 414d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 415d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath /* 416d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath * If the host doesn't support any of the Driver Types A,C or D, 417d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath * default Driver Type B is used. 418d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath */ 419d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (!(card->host->caps & (MMC_CAP_DRIVER_TYPE_A | MMC_CAP_DRIVER_TYPE_C 420d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath | MMC_CAP_DRIVER_TYPE_D))) 421d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath return 0; 422d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 423d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (card->host->caps & MMC_CAP_DRIVER_TYPE_A) { 424d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath host_drv_type = MMC_SET_DRIVER_TYPE_A; 425d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (card->sw_caps.sd3_drv_type & SD_DRIVER_TYPE_A) 426d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath card_drv_type = MMC_SET_DRIVER_TYPE_A; 427d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath else if (card->sw_caps.sd3_drv_type & SD_DRIVER_TYPE_B) 428d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath card_drv_type = MMC_SET_DRIVER_TYPE_B; 429d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath else if (card->sw_caps.sd3_drv_type & SD_DRIVER_TYPE_C) 430d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath card_drv_type = MMC_SET_DRIVER_TYPE_C; 431d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath } else if (card->host->caps & MMC_CAP_DRIVER_TYPE_C) { 432d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath host_drv_type = MMC_SET_DRIVER_TYPE_C; 433d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (card->sw_caps.sd3_drv_type & SD_DRIVER_TYPE_C) 434d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath card_drv_type = MMC_SET_DRIVER_TYPE_C; 435d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath } else if (!(card->host->caps & MMC_CAP_DRIVER_TYPE_D)) { 436d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath /* 437d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath * If we are here, that means only the default driver type 438d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath * B is supported by the host. 439d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath */ 440d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath host_drv_type = MMC_SET_DRIVER_TYPE_B; 441d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (card->sw_caps.sd3_drv_type & SD_DRIVER_TYPE_B) 442d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath card_drv_type = MMC_SET_DRIVER_TYPE_B; 443d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath else if (card->sw_caps.sd3_drv_type & SD_DRIVER_TYPE_C) 444d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath card_drv_type = MMC_SET_DRIVER_TYPE_C; 445d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath } 446d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 447d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath err = mmc_sd_switch(card, 1, 2, card_drv_type, status); 448d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (err) 449d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath return err; 450d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 451d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if ((status[15] & 0xF) != card_drv_type) { 452d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath printk(KERN_WARNING "%s: Problem setting driver strength!\n", 453d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath mmc_hostname(card->host)); 454d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath return 0; 455d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath } 456d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 457d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath mmc_set_driver_type(card->host, host_drv_type); 458d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 459d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath return 0; 460d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath} 461d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 46249c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nathstatic int sd_set_bus_speed_mode(struct mmc_card *card, u8 *status) 46349c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath{ 46449c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath unsigned int bus_speed = 0, timing = 0; 46549c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath int err; 46649c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath 46749c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath /* 46849c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath * If the host doesn't support any of the UHS-I modes, fallback on 46949c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath * default speed. 47049c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath */ 47149c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath if (!(card->host->caps & (MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25 | 47249c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR104 | MMC_CAP_UHS_DDR50))) 47349c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath return 0; 47449c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath 47549c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath if ((card->host->caps & MMC_CAP_UHS_SDR104) && 47649c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath (card->sw_caps.sd3_bus_mode & SD_MODE_UHS_SDR104)) { 47749c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath bus_speed = UHS_SDR104_BUS_SPEED; 47849c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath timing = MMC_TIMING_UHS_SDR104; 47949c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath card->sw_caps.uhs_max_dtr = UHS_SDR104_MAX_DTR; 48049c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath } else if ((card->host->caps & MMC_CAP_UHS_DDR50) && 48149c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath (card->sw_caps.sd3_bus_mode & SD_MODE_UHS_DDR50)) { 48249c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath bus_speed = UHS_DDR50_BUS_SPEED; 48349c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath timing = MMC_TIMING_UHS_DDR50; 48449c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath card->sw_caps.uhs_max_dtr = UHS_DDR50_MAX_DTR; 48549c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath } else if ((card->host->caps & (MMC_CAP_UHS_SDR104 | 48649c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath MMC_CAP_UHS_SDR50)) && (card->sw_caps.sd3_bus_mode & 48749c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath SD_MODE_UHS_SDR50)) { 48849c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath bus_speed = UHS_SDR50_BUS_SPEED; 48949c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath timing = MMC_TIMING_UHS_SDR50; 49049c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath card->sw_caps.uhs_max_dtr = UHS_SDR50_MAX_DTR; 49149c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath } else if ((card->host->caps & (MMC_CAP_UHS_SDR104 | 49249c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR25)) && 49349c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath (card->sw_caps.sd3_bus_mode & SD_MODE_UHS_SDR25)) { 49449c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath bus_speed = UHS_SDR25_BUS_SPEED; 49549c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath timing = MMC_TIMING_UHS_SDR25; 49649c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath card->sw_caps.uhs_max_dtr = UHS_SDR25_MAX_DTR; 49749c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath } else if ((card->host->caps & (MMC_CAP_UHS_SDR104 | 49849c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR25 | 49949c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath MMC_CAP_UHS_SDR12)) && (card->sw_caps.sd3_bus_mode & 50049c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath SD_MODE_UHS_SDR12)) { 50149c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath bus_speed = UHS_SDR12_BUS_SPEED; 50249c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath timing = MMC_TIMING_UHS_SDR12; 50349c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath card->sw_caps.uhs_max_dtr = UHS_SDR12_MAX_DTR; 50449c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath } 50549c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath 50649c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath card->sd_bus_speed = bus_speed; 50749c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath err = mmc_sd_switch(card, 1, 0, bus_speed, status); 50849c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath if (err) 50949c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath return err; 51049c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath 51149c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath if ((status[16] & 0xF) != bus_speed) 51249c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath printk(KERN_WARNING "%s: Problem setting bus speed mode!\n", 51349c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath mmc_hostname(card->host)); 51449c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath else { 51549c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath mmc_set_timing(card->host, timing); 51649c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath mmc_set_clock(card->host, card->sw_caps.uhs_max_dtr); 51749c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath } 51849c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath 51949c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath return 0; 52049c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath} 52149c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath 5225371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nathstatic int sd_set_current_limit(struct mmc_card *card, u8 *status) 5235371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath{ 5245371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath int current_limit = 0; 5255371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath int err; 5265371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath 5275371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath /* 5285371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath * Current limit switch is only defined for SDR50, SDR104, and DDR50 5295371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath * bus speed modes. For other bus speed modes, we set the default 5305371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath * current limit of 200mA. 5315371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath */ 5325371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath if ((card->sd_bus_speed == UHS_SDR50_BUS_SPEED) || 5335371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath (card->sd_bus_speed == UHS_SDR104_BUS_SPEED) || 5345371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath (card->sd_bus_speed == UHS_DDR50_BUS_SPEED)) { 5355371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath if (card->host->caps & MMC_CAP_MAX_CURRENT_800) { 5365371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath if (card->sw_caps.sd3_curr_limit & SD_MAX_CURRENT_800) 5375371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath current_limit = SD_SET_CURRENT_LIMIT_800; 5385371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath else if (card->sw_caps.sd3_curr_limit & 5395371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath SD_MAX_CURRENT_600) 5405371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath current_limit = SD_SET_CURRENT_LIMIT_600; 5415371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath else if (card->sw_caps.sd3_curr_limit & 5425371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath SD_MAX_CURRENT_400) 5435371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath current_limit = SD_SET_CURRENT_LIMIT_400; 5445371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath else if (card->sw_caps.sd3_curr_limit & 5455371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath SD_MAX_CURRENT_200) 5465371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath current_limit = SD_SET_CURRENT_LIMIT_200; 5475371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath } else if (card->host->caps & MMC_CAP_MAX_CURRENT_600) { 5485371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath if (card->sw_caps.sd3_curr_limit & SD_MAX_CURRENT_600) 5495371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath current_limit = SD_SET_CURRENT_LIMIT_600; 5505371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath else if (card->sw_caps.sd3_curr_limit & 5515371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath SD_MAX_CURRENT_400) 5525371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath current_limit = SD_SET_CURRENT_LIMIT_400; 5535371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath else if (card->sw_caps.sd3_curr_limit & 5545371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath SD_MAX_CURRENT_200) 5555371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath current_limit = SD_SET_CURRENT_LIMIT_200; 5565371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath } else if (card->host->caps & MMC_CAP_MAX_CURRENT_400) { 5575371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath if (card->sw_caps.sd3_curr_limit & SD_MAX_CURRENT_400) 5585371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath current_limit = SD_SET_CURRENT_LIMIT_400; 5595371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath else if (card->sw_caps.sd3_curr_limit & 5605371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath SD_MAX_CURRENT_200) 5615371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath current_limit = SD_SET_CURRENT_LIMIT_200; 5625371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath } else if (card->host->caps & MMC_CAP_MAX_CURRENT_200) { 5635371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath if (card->sw_caps.sd3_curr_limit & SD_MAX_CURRENT_200) 5645371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath current_limit = SD_SET_CURRENT_LIMIT_200; 5655371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath } 5665371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath } else 5675371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath current_limit = SD_SET_CURRENT_LIMIT_200; 5685371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath 5695371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath err = mmc_sd_switch(card, 1, 3, current_limit, status); 5705371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath if (err) 5715371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath return err; 5725371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath 5735371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath if (((status[15] >> 4) & 0x0F) != current_limit) 5745371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath printk(KERN_WARNING "%s: Problem setting current limit!\n", 5755371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath mmc_hostname(card->host)); 5765371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath 5775371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath return 0; 5785371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath} 5795371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath 580d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath/* 581d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath * UHS-I specific initialization procedure 582d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath */ 583d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nathstatic int mmc_sd_init_uhs_card(struct mmc_card *card) 584d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath{ 585d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath int err; 586d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath u8 *status; 587d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 588d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (!card->scr.sda_spec3) 589d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath return 0; 590d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 591d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (!(card->csd.cmdclass & CCC_SWITCH)) 592d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath return 0; 593d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 594d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath status = kmalloc(64, GFP_KERNEL); 595d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (!status) { 596d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath printk(KERN_ERR "%s: could not allocate a buffer for " 597d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath "switch capabilities.\n", mmc_hostname(card->host)); 598d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath return -ENOMEM; 599d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath } 600d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 601d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath /* Set 4-bit bus width */ 602d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if ((card->host->caps & MMC_CAP_4_BIT_DATA) && 603d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath (card->scr.bus_widths & SD_SCR_BUS_WIDTH_4)) { 604d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath err = mmc_app_set_bus_width(card, MMC_BUS_WIDTH_4); 605d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (err) 606d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath goto out; 607d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 608d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath mmc_set_bus_width(card->host, MMC_BUS_WIDTH_4); 609d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath } 610d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 611d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath /* Set the driver strength for the card */ 612d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath err = sd_select_driver_type(card, status); 61349c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath if (err) 61449c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath goto out; 61549c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath 61649c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath /* Set bus speed mode of the card */ 61749c468fcf878d2c86e31920cf54aa90c88418a66Arindam Nath err = sd_set_bus_speed_mode(card, status); 6185371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath if (err) 6195371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath goto out; 6205371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath 6215371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath /* Set current limit for the card */ 6225371c927bcd06a5c9dd6785bab2d452b87d9abc6Arindam Nath err = sd_set_current_limit(card, status); 623b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath if (err) 624b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath goto out; 625b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath 626b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath /* SPI mode doesn't define CMD19 */ 627b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath if (!mmc_host_is_spi(card->host) && card->host->ops->execute_tuning) 628b513ea250eb7c36a8afb3df938d632ca6b4df7cdArindam Nath err = card->host->ops->execute_tuning(card->host); 629d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 630d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nathout: 631d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath kfree(status); 632d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 633d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath return err; 634d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath} 635d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 63651ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre OssmanMMC_DEV_ATTR(cid, "%08x%08x%08x%08x\n", card->raw_cid[0], card->raw_cid[1], 63751ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman card->raw_cid[2], card->raw_cid[3]); 63851ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre OssmanMMC_DEV_ATTR(csd, "%08x%08x%08x%08x\n", card->raw_csd[0], card->raw_csd[1], 63951ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman card->raw_csd[2], card->raw_csd[3]); 64051ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre OssmanMMC_DEV_ATTR(scr, "%08x%08x\n", card->raw_scr[0], card->raw_scr[1]); 64151ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre OssmanMMC_DEV_ATTR(date, "%02d/%04d\n", card->cid.month, card->cid.year); 642dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian HunterMMC_DEV_ATTR(erase_size, "%u\n", card->erase_size << 9); 643dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian HunterMMC_DEV_ATTR(preferred_erase_size, "%u\n", card->pref_erase << 9); 64451ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre OssmanMMC_DEV_ATTR(fwrev, "0x%x\n", card->cid.fwrev); 64551ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre OssmanMMC_DEV_ATTR(hwrev, "0x%x\n", card->cid.hwrev); 64651ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre OssmanMMC_DEV_ATTR(manfid, "0x%06x\n", card->cid.manfid); 64751ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre OssmanMMC_DEV_ATTR(name, "%s\n", card->cid.prod_name); 64851ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre OssmanMMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid); 64951ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre OssmanMMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial); 65051ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman 65151ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman 65251ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossmanstatic struct attribute *sd_std_attrs[] = { 65351ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman &dev_attr_cid.attr, 65451ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman &dev_attr_csd.attr, 65551ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman &dev_attr_scr.attr, 65651ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman &dev_attr_date.attr, 657dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter &dev_attr_erase_size.attr, 658dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter &dev_attr_preferred_erase_size.attr, 65951ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman &dev_attr_fwrev.attr, 66051ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman &dev_attr_hwrev.attr, 66151ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman &dev_attr_manfid.attr, 66251ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman &dev_attr_name.attr, 66351ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman &dev_attr_oemid.attr, 66451ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman &dev_attr_serial.attr, 66551ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman NULL, 66651ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman}; 66751ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman 66851ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossmanstatic struct attribute_group sd_std_attr_group = { 66951ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman .attrs = sd_std_attrs, 67051ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman}; 67151ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman 672a4dbd6740df0872cdf0a86841f75beec8381964dDavid Brownellstatic const struct attribute_group *sd_attr_groups[] = { 67351ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman &sd_std_attr_group, 67451ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman NULL, 67551ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman}; 67651ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman 67771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslawstruct device_type sd_type = { 67851ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman .groups = sd_attr_groups, 67951ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman}; 68051ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman 6817ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman/* 68271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * Fetch CID from card. 6837ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 684d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nathint mmc_sd_get_cid(struct mmc_host *host, u32 ocr, u32 *cid, u32 *rocr) 6857ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman{ 6867ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman int err; 6877ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 6887ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman /* 6897ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * Since we're changing the OCR value, we seem to 6907ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * need to tell some cards to go back to the idle 6917ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * state. We wait 1ms to give cards time to 6927ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * respond. 6937ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 6947ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman mmc_go_idle(host); 6957ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 6967ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman /* 6977ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * If SD_SEND_IF_COND indicates an SD 2.0 6987ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * compliant card and we should set bit 30 6997ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * of the ocr to indicate that we can handle 7007ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * block-addressed SDHC cards. 7017ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 7026abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman err = mmc_send_if_cond(host, ocr); 70317b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (!err) 704f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath ocr |= SD_OCR_CCS; 7057ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 706f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath /* 707f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath * If the host supports one of UHS-I modes, request the card 708f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath * to switch to 1.8V signaling level. 709f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath */ 710f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath if (host->caps & (MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25 | 711f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR104 | MMC_CAP_UHS_DDR50)) 712f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath ocr |= SD_OCR_S18R; 713f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 714f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath /* If the host can supply more than 150mA, XPC should be set to 1. */ 715f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath if (host->caps & (MMC_CAP_SET_XPC_330 | MMC_CAP_SET_XPC_300 | 716f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath MMC_CAP_SET_XPC_180)) 717f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath ocr |= SD_OCR_XPC; 718f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 719f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nathtry_again: 720d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath err = mmc_send_app_op_cond(host, ocr, rocr); 72117b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (err) 72271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return err; 7237ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 724f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath /* 725f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath * In case CCS and S18A in the response is set, start Signal Voltage 726f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath * Switch procedure. SPI mode doesn't support CMD11. 727f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath */ 728d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (!mmc_host_is_spi(host) && rocr && 729d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath ((*rocr & 0x41000000) == 0x41000000)) { 730261bbd463a091b939770255d559bbc89b1bad568Philip Rakity err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180, true); 731f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath if (err) { 732f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath ocr &= ~SD_OCR_S18R; 733f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath goto try_again; 734f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath } 735f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath } 736f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 737af51715079e7fb6b290e1881d63d815dc4de5011David Brownell if (mmc_host_is_spi(host)) 738af51715079e7fb6b290e1881d63d815dc4de5011David Brownell err = mmc_send_cid(host, cid); 739af51715079e7fb6b290e1881d63d815dc4de5011David Brownell else 740af51715079e7fb6b290e1881d63d815dc4de5011David Brownell err = mmc_all_send_cid(host, cid); 74171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 74271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return err; 74371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw} 74471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 74571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslawint mmc_sd_get_csd(struct mmc_host *host, struct mmc_card *card) 74671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw{ 74771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw int err; 74871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 74971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw /* 75071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * Fetch CSD from card. 75171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw */ 75271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw err = mmc_send_csd(card, card->raw_csd); 75317b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (err) 75471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return err; 7557ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 75671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw err = mmc_decode_csd(card); 75771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (err) 75871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return err; 75971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 76071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return 0; 76171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw} 76271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 76371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslawint mmc_sd_setup_card(struct mmc_host *host, struct mmc_card *card, 76471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw bool reinit) 76571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw{ 76671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw int err; 76771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 76871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (!reinit) { 76971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw /* 77071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * Fetch SCR from card. 77171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw */ 77271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw err = mmc_app_send_scr(card, card->raw_scr); 77371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (err) 77471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return err; 77571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 77671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw err = mmc_decode_scr(card); 77771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (err) 77871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return err; 77971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 78071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw /* 781dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter * Fetch and process SD Status register. 782dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter */ 783dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter err = mmc_read_ssr(card); 784dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter if (err) 785dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter return err; 786dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter 787dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter /* Erase init depends on CSD and SSR */ 788dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter mmc_init_erase(card); 789dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter 790dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter /* 79171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * Fetch switch information from card. 79271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw */ 79371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw err = mmc_read_switch(card); 79471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (err) 79571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return err; 79671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw } 79771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 79871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw /* 79971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * For SPI, enable CRC as appropriate. 80071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * This CRC enable is located AFTER the reading of the 80171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * card registers because some SDHC cards are not able 80271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * to provide valid CRCs for non-512-byte blocks. 80371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw */ 80471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (mmc_host_is_spi(host)) { 80571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw err = mmc_spi_set_crc(host, use_spi_crc); 80671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (err) 80771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return err; 80871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw } 80971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 81071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw /* 81171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * Check if read-only switch is active. 81271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw */ 81371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (!reinit) { 81471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw int ro = -1; 81571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 81671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (host->ops->get_ro) 81771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw ro = host->ops->get_ro(host); 81871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 81971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (ro < 0) { 82071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw printk(KERN_WARNING "%s: host does not " 82171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw "support reading read-only " 82271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw "switch. assuming write-enable.\n", 82371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw mmc_hostname(host)); 82471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw } else if (ro > 0) { 82571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw mmc_card_set_readonly(card); 826adf66a0dc5e8be8d4e64f3c2114f9b175558235bPierre Ossman } 82771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw } 82871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 82971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return 0; 83071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw} 83171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 83271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslawunsigned mmc_sd_get_max_clock(struct mmc_card *card) 83371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw{ 83471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw unsigned max_dtr = (unsigned int)-1; 83571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 83671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (mmc_card_highspeed(card)) { 83771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (max_dtr > card->sw_caps.hs_max_dtr) 83871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw max_dtr = card->sw_caps.hs_max_dtr; 83971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw } else if (max_dtr > card->csd.max_dtr) { 84071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw max_dtr = card->csd.max_dtr; 84171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw } 84271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 84371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return max_dtr; 84471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw} 84571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 84671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslawvoid mmc_sd_go_highspeed(struct mmc_card *card) 84771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw{ 84871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw mmc_card_set_highspeed(card); 84971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw mmc_set_timing(card->host, MMC_TIMING_SD_HS); 85071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw} 85171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 85271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw/* 85371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * Handle the detection and initialisation of a card. 85471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * 85571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * In the case of a resume, "oldcard" will contain the card 85671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * we're trying to reinitialise. 85771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw */ 85871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslawstatic int mmc_sd_init_card(struct mmc_host *host, u32 ocr, 85971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw struct mmc_card *oldcard) 86071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw{ 86171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw struct mmc_card *card; 86271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw int err; 86371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw u32 cid[4]; 864d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath u32 rocr = 0; 86571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 86671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw BUG_ON(!host); 86771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw WARN_ON(!host->claimed); 86871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 869d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath err = mmc_sd_get_cid(host, ocr, cid, &rocr); 87071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (err) 87171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return err; 87271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 87371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (oldcard) { 87471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) 87571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return -ENOENT; 8767ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 8776abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman card = oldcard; 8786abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman } else { 8796abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman /* 8806abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Allocate card structure. 8816abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman */ 88251ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman card = mmc_alloc_card(host, &sd_type); 88371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (IS_ERR(card)) 88471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return PTR_ERR(card); 8856abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 8866abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman card->type = MMC_TYPE_SD; 8876abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman memcpy(card->raw_cid, cid, sizeof(card->raw_cid)); 8886abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman } 8897ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 8907ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman /* 891af51715079e7fb6b290e1881d63d815dc4de5011David Brownell * For native busses: get card RCA and quit open drain mode. 8927ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 893af51715079e7fb6b290e1881d63d815dc4de5011David Brownell if (!mmc_host_is_spi(host)) { 894af51715079e7fb6b290e1881d63d815dc4de5011David Brownell err = mmc_send_relative_addr(host, &card->rca); 895af51715079e7fb6b290e1881d63d815dc4de5011David Brownell if (err) 89671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return err; 8977ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 898af51715079e7fb6b290e1881d63d815dc4de5011David Brownell mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL); 899af51715079e7fb6b290e1881d63d815dc4de5011David Brownell } 9007ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 9016abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman if (!oldcard) { 90271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw err = mmc_sd_get_csd(host, card); 90317b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (err) 90471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return err; 905bd766312618d2ecc85bce663f95faec601447ecbPierre Ossman 9066abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_decode_cid(card); 9076abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman } 9087ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 9097ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman /* 9106abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Select card, as all following commands rely on that. 9117ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 912af51715079e7fb6b290e1881d63d815dc4de5011David Brownell if (!mmc_host_is_spi(host)) { 913af51715079e7fb6b290e1881d63d815dc4de5011David Brownell err = mmc_select_card(card); 914af51715079e7fb6b290e1881d63d815dc4de5011David Brownell if (err) 91571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return err; 9166abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman } 9171addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman 91871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw err = mmc_sd_setup_card(host, card, oldcard != NULL); 91971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (err) 92071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw goto free_card; 9219d9f25c036dd584db175552a7d162403d3ab54b3Wolfgang Muees 922d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath /* Initialization sequence for UHS-I cards */ 923d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (rocr & SD_ROCR_S18A) { 924d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath err = mmc_sd_init_uhs_card(card); 92517b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (err) 9267ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman goto free_card; 9273a3035114307cd55e024662bb295a87b849f0bd4Arindam Nath 9283a3035114307cd55e024662bb295a87b849f0bd4Arindam Nath /* Card is an ultra-high-speed card */ 9293a3035114307cd55e024662bb295a87b849f0bd4Arindam Nath mmc_sd_card_set_uhs(card); 9304d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath 9314d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath /* 9324d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath * Since initialization is now complete, enable preset 9334d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath * value registers for UHS-I cards. 9344d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath */ 9354d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath if (host->ops->enable_preset_value) 9364d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath host->ops->enable_preset_value(host, true); 937d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath } else { 938d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath /* 939d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath * Attempt to change to high-speed (if supported) 940d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath */ 941d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath err = mmc_sd_switch_hs(card); 942d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (err > 0) 943d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath mmc_sd_go_highspeed(card); 944d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath else if (err) 945d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath goto free_card; 946d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 947d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath /* 948d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath * Set bus speed. 949d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath */ 950d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath mmc_set_clock(host, mmc_sd_get_max_clock(card)); 9517ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 952d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath /* 953d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath * Switch to wider bus (if supported). 954d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath */ 955d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if ((host->caps & MMC_CAP_4_BIT_DATA) && 956d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath (card->scr.bus_widths & SD_SCR_BUS_WIDTH_4)) { 957d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath err = mmc_app_set_bus_width(card, MMC_BUS_WIDTH_4); 958d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath if (err) 959d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath goto free_card; 960d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath 961d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath mmc_set_bus_width(host, MMC_BUS_WIDTH_4); 962d6d50a15a2897d4133d536dd4343b5cf21163db3Arindam Nath } 9637ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman } 9647ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 96571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw host->card = card; 96617b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman return 0; 9676abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 9686abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossmanfree_card: 9696abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman if (!oldcard) 9706abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_remove_card(card); 9716abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 972adf66a0dc5e8be8d4e64f3c2114f9b175558235bPierre Ossman return err; 9736abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman} 9746abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 9756abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman/* 9766abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Host is being removed. Free up the current card. 9776abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman */ 9786abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossmanstatic void mmc_sd_remove(struct mmc_host *host) 9796abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman{ 9806abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman BUG_ON(!host); 9816abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman BUG_ON(!host->card); 9826abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 9836abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_remove_card(host->card); 9846abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman host->card = NULL; 9856abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman} 9866abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 9876abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman/* 9886abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Card detection callback from host. 9896abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman */ 9906abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossmanstatic void mmc_sd_detect(struct mmc_host *host) 9916abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman{ 9926abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman int err; 9936abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 9946abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman BUG_ON(!host); 9956abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman BUG_ON(!host->card); 9966abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 9976abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_claim_host(host); 9986abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 9996abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman /* 10006abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Just check if our card has been removed. 10016abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman */ 10026abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman err = mmc_send_status(host->card, NULL); 10037ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 10047ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman mmc_release_host(host); 10057ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 100617b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (err) { 10074101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossman mmc_sd_remove(host); 10086abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 10096abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_claim_host(host); 10106abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_detach_bus(host); 10116abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_release_host(host); 10126abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman } 10136abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman} 10146abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 10156abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman/* 10166abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Suspend callback from host. 10176abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman */ 101895cdfb72b9bc568803f395c266152c71b034b461Nicolas Pitrestatic int mmc_sd_suspend(struct mmc_host *host) 10196abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman{ 10206abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman BUG_ON(!host); 10216abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman BUG_ON(!host->card); 10226abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 10236abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_claim_host(host); 1024af51715079e7fb6b290e1881d63d815dc4de5011David Brownell if (!mmc_host_is_spi(host)) 1025af51715079e7fb6b290e1881d63d815dc4de5011David Brownell mmc_deselect_cards(host); 10266abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman host->card->state &= ~MMC_STATE_HIGHSPEED; 10276abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_release_host(host); 102895cdfb72b9bc568803f395c266152c71b034b461Nicolas Pitre 102995cdfb72b9bc568803f395c266152c71b034b461Nicolas Pitre return 0; 10306abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman} 10316abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 10326abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman/* 10336abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Resume callback from host. 10346abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * 10356abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * This function tries to determine if the same card is still present 10366abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * and, if so, restore all state to it. 10376abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman */ 103895cdfb72b9bc568803f395c266152c71b034b461Nicolas Pitrestatic int mmc_sd_resume(struct mmc_host *host) 10396abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman{ 10406abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman int err; 10416abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 10426abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman BUG_ON(!host); 10436abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman BUG_ON(!host->card); 10446abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 10456abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_claim_host(host); 10466abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman err = mmc_sd_init_card(host, host->ocr, host->card); 10472986d0bf23d97d68804ccfa80965073ccf1af242Pierre Ossman mmc_release_host(host); 10482986d0bf23d97d68804ccfa80965073ccf1af242Pierre Ossman 104995cdfb72b9bc568803f395c266152c71b034b461Nicolas Pitre return err; 10506abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman} 10516abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 105212ae637f081a7a05144af65802a7b492b9162660Ohad Ben-Cohenstatic int mmc_sd_power_restore(struct mmc_host *host) 1053eae1aeeed852aae37621b82a9e7f6c05096a18fdAdrian Hunter{ 105412ae637f081a7a05144af65802a7b492b9162660Ohad Ben-Cohen int ret; 105512ae637f081a7a05144af65802a7b492b9162660Ohad Ben-Cohen 1056eae1aeeed852aae37621b82a9e7f6c05096a18fdAdrian Hunter host->card->state &= ~MMC_STATE_HIGHSPEED; 1057eae1aeeed852aae37621b82a9e7f6c05096a18fdAdrian Hunter mmc_claim_host(host); 105812ae637f081a7a05144af65802a7b492b9162660Ohad Ben-Cohen ret = mmc_sd_init_card(host, host->ocr, host->card); 1059eae1aeeed852aae37621b82a9e7f6c05096a18fdAdrian Hunter mmc_release_host(host); 106012ae637f081a7a05144af65802a7b492b9162660Ohad Ben-Cohen 106112ae637f081a7a05144af65802a7b492b9162660Ohad Ben-Cohen return ret; 1062eae1aeeed852aae37621b82a9e7f6c05096a18fdAdrian Hunter} 1063eae1aeeed852aae37621b82a9e7f6c05096a18fdAdrian Hunter 10646abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossmanstatic const struct mmc_bus_ops mmc_sd_ops = { 10656abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman .remove = mmc_sd_remove, 10666abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman .detect = mmc_sd_detect, 10679feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter .suspend = NULL, 10689feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter .resume = NULL, 1069eae1aeeed852aae37621b82a9e7f6c05096a18fdAdrian Hunter .power_restore = mmc_sd_power_restore, 10709feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter}; 10719feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter 10729feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunterstatic const struct mmc_bus_ops mmc_sd_ops_unsafe = { 10739feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter .remove = mmc_sd_remove, 10749feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter .detect = mmc_sd_detect, 10756abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman .suspend = mmc_sd_suspend, 10766abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman .resume = mmc_sd_resume, 1077eae1aeeed852aae37621b82a9e7f6c05096a18fdAdrian Hunter .power_restore = mmc_sd_power_restore, 10786abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman}; 10796abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 10809feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunterstatic void mmc_sd_attach_bus_ops(struct mmc_host *host) 10819feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter{ 10829feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter const struct mmc_bus_ops *bus_ops; 10839feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter 108471d7d3d190fe77588269a8febf93cd739bd91eb3Matt Fleming if (!mmc_card_is_removable(host)) 10859feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter bus_ops = &mmc_sd_ops_unsafe; 10869feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter else 10879feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter bus_ops = &mmc_sd_ops; 10889feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter mmc_attach_bus(host, bus_ops); 10899feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter} 10909feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter 10916abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman/* 10926abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Starting point for SD card init. 10936abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman */ 1094807e8e40673d9628fa7dcdd14423424b4ee5f43bAndy Rossint mmc_attach_sd(struct mmc_host *host) 10956abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman{ 10966abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman int err; 1097807e8e40673d9628fa7dcdd14423424b4ee5f43bAndy Ross u32 ocr; 10986abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 10996abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman BUG_ON(!host); 1100d84075c8aed771d47d7ac6e96b098559da361c25Pierre Ossman WARN_ON(!host->claimed); 11016abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 1102f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath /* Make sure we are at 3.3V signalling voltage */ 1103261bbd463a091b939770255d559bbc89b1bad568Philip Rakity err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330, false); 1104f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath if (err) 1105f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath return err; 1106f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 11074d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath /* Disable preset value enable if already set since last time */ 11084d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath if (host->ops->enable_preset_value) 11094d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath host->ops->enable_preset_value(host, false); 11104d55c5a13a189a80d40383f02c8026f9a87d7c87Arindam Nath 1111807e8e40673d9628fa7dcdd14423424b4ee5f43bAndy Ross err = mmc_send_app_op_cond(host, 0, &ocr); 1112807e8e40673d9628fa7dcdd14423424b4ee5f43bAndy Ross if (err) 1113807e8e40673d9628fa7dcdd14423424b4ee5f43bAndy Ross return err; 1114807e8e40673d9628fa7dcdd14423424b4ee5f43bAndy Ross 11159feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter mmc_sd_attach_bus_ops(host); 11168f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai if (host->ocr_avail_sd) 11178f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai host->ocr_avail = host->ocr_avail_sd; 11186abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 11196abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman /* 1120af51715079e7fb6b290e1881d63d815dc4de5011David Brownell * We need to get OCR a different way for SPI. 1121af51715079e7fb6b290e1881d63d815dc4de5011David Brownell */ 1122af51715079e7fb6b290e1881d63d815dc4de5011David Brownell if (mmc_host_is_spi(host)) { 1123af51715079e7fb6b290e1881d63d815dc4de5011David Brownell mmc_go_idle(host); 1124af51715079e7fb6b290e1881d63d815dc4de5011David Brownell 1125af51715079e7fb6b290e1881d63d815dc4de5011David Brownell err = mmc_spi_read_ocr(host, 0, &ocr); 1126af51715079e7fb6b290e1881d63d815dc4de5011David Brownell if (err) 1127af51715079e7fb6b290e1881d63d815dc4de5011David Brownell goto err; 1128af51715079e7fb6b290e1881d63d815dc4de5011David Brownell } 1129af51715079e7fb6b290e1881d63d815dc4de5011David Brownell 1130af51715079e7fb6b290e1881d63d815dc4de5011David Brownell /* 11316abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Sanity check the voltages that the card claims to 11326abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * support. 11336abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman */ 11346abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman if (ocr & 0x7F) { 11356abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman printk(KERN_WARNING "%s: card claims to support voltages " 11366abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman "below the defined range. These will be ignored.\n", 11376abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_hostname(host)); 11386abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman ocr &= ~0x7F; 11396abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman } 11406abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 11418f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai if ((ocr & MMC_VDD_165_195) && 11428f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai !(host->ocr_avail_sd & MMC_VDD_165_195)) { 11436abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman printk(KERN_WARNING "%s: SD card claims to support the " 11446abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman "incompletely defined 'low voltage range'. This " 11456abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman "will be ignored.\n", mmc_hostname(host)); 11466abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman ocr &= ~MMC_VDD_165_195; 11476abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman } 11486abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 11496abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman host->ocr = mmc_select_voltage(host, ocr); 11506abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 11516abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman /* 11526abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Can we support the voltage(s) of the card(s)? 11536abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman */ 1154109b5bed18441599b5ab0e1f3623efa5715a4703Pierre Ossman if (!host->ocr) { 1155109b5bed18441599b5ab0e1f3623efa5715a4703Pierre Ossman err = -EINVAL; 11566abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman goto err; 1157109b5bed18441599b5ab0e1f3623efa5715a4703Pierre Ossman } 11586abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 11596abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman /* 11606abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Detect and init the card. 11616abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman */ 11626abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman err = mmc_sd_init_card(host, host->ocr, NULL); 116317b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (err) 11646abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman goto err; 11656abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 11666abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_release_host(host); 11674101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossman err = mmc_add_card(host->card); 1168807e8e40673d9628fa7dcdd14423424b4ee5f43bAndy Ross mmc_claim_host(host); 11697ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman if (err) 11702986d0bf23d97d68804ccfa80965073ccf1af242Pierre Ossman goto remove_card; 11717ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 11727ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman return 0; 11737ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 11742986d0bf23d97d68804ccfa80965073ccf1af242Pierre Ossmanremove_card: 1175807e8e40673d9628fa7dcdd14423424b4ee5f43bAndy Ross mmc_release_host(host); 11766abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_remove_card(host->card); 11777ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman host->card = NULL; 11782986d0bf23d97d68804ccfa80965073ccf1af242Pierre Ossman mmc_claim_host(host); 11797ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossmanerr: 11807ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman mmc_detach_bus(host); 11817ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1182109b5bed18441599b5ab0e1f3623efa5715a4703Pierre Ossman printk(KERN_ERR "%s: error %d whilst initialising SD card\n", 1183109b5bed18441599b5ab0e1f3623efa5715a4703Pierre Ossman mmc_hostname(host), err); 1184109b5bed18441599b5ab0e1f3623efa5715a4703Pierre Ossman 1185adf66a0dc5e8be8d4e64f3c2114f9b175558235bPierre Ossman return err; 11867ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman} 11877ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1188