Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1 | /* |
Pierre Ossman | 70f1048 | 2007-07-11 20:04:50 +0200 | [diff] [blame] | 2 | * linux/drivers/mmc/core/mmc.c |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 3 | * |
| 4 | * Copyright (C) 2003-2004 Russell King, All Rights Reserved. |
| 5 | * Copyright (C) 2005-2007 Pierre Ossman, All Rights Reserved. |
| 6 | * MMCv4 support Copyright (C) 2006 Philip Langdale, All Rights Reserved. |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License version 2 as |
| 10 | * published by the Free Software Foundation. |
| 11 | */ |
| 12 | |
| 13 | #include <linux/err.h> |
Hans de Goede | 81f8a7b | 2015-04-01 17:26:23 +0200 | [diff] [blame] | 14 | #include <linux/of.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 15 | #include <linux/slab.h> |
Paul Gortmaker | 0205a90 | 2011-07-15 12:01:27 -0400 | [diff] [blame] | 16 | #include <linux/stat.h> |
Ulf Hansson | 0cb403a | 2013-10-10 14:20:05 +0200 | [diff] [blame] | 17 | #include <linux/pm_runtime.h> |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 18 | |
| 19 | #include <linux/mmc/host.h> |
| 20 | #include <linux/mmc/card.h> |
| 21 | #include <linux/mmc/mmc.h> |
Tatyana Brokhman | 4fbb0bf | 2014-12-04 22:03:42 +0200 | [diff] [blame] | 22 | #include <linux/reboot.h> |
Konstantin Dorfman | 892f84e | 2015-02-12 13:37:56 +0200 | [diff] [blame] | 23 | #include <trace/events/mmc.h> |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 24 | |
| 25 | #include "core.h" |
Adrian Hunter | 436f8da | 2015-05-07 13:10:18 +0300 | [diff] [blame] | 26 | #include "host.h" |
Pierre Ossman | 4101c16 | 2007-05-19 13:39:01 +0200 | [diff] [blame] | 27 | #include "bus.h" |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 28 | #include "mmc_ops.h" |
Philip Rakity | 4c4cb17 | 2011-05-13 11:17:18 +0530 | [diff] [blame] | 29 | #include "sd_ops.h" |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 30 | |
Ulf Hansson | fe1b570 | 2016-11-04 18:32:33 +0100 | [diff] [blame] | 31 | #define DEFAULT_CMD6_TIMEOUT_MS 500 |
| 32 | |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 33 | static const unsigned int tran_exp[] = { |
| 34 | 10000, 100000, 1000000, 10000000, |
| 35 | 0, 0, 0, 0 |
| 36 | }; |
| 37 | |
| 38 | static const unsigned char tran_mant[] = { |
| 39 | 0, 10, 12, 13, 15, 20, 25, 30, |
| 40 | 35, 40, 45, 50, 55, 60, 70, 80, |
| 41 | }; |
| 42 | |
| 43 | static const unsigned int tacc_exp[] = { |
| 44 | 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, |
| 45 | }; |
| 46 | |
| 47 | static const unsigned int tacc_mant[] = { |
| 48 | 0, 10, 12, 13, 15, 20, 25, 30, |
| 49 | 35, 40, 45, 50, 55, 60, 70, 80, |
| 50 | }; |
| 51 | |
Pratibhasagar V | 5320226 | 2016-06-09 18:09:31 -0400 | [diff] [blame] | 52 | static const struct mmc_fixup mmc_ext_csd_fixups[] = { |
| 53 | /* |
| 54 | * Certain Hynix eMMC 4.41 cards might get broken when HPI feature |
| 55 | * is used so disable the HPI feature for such buggy cards. |
| 56 | */ |
| 57 | MMC_FIXUP_EXT_CSD_REV(CID_NAME_ANY, CID_MANFID_HYNIX, |
| 58 | 0x014a, add_quirk, MMC_QUIRK_BROKEN_HPI, 5), |
| 59 | |
| 60 | END_FIXUP |
| 61 | }; |
| 62 | |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 63 | #define UNSTUFF_BITS(resp,start,size) \ |
| 64 | ({ \ |
| 65 | const int __size = size; \ |
| 66 | const u32 __mask = (__size < 32 ? 1 << __size : 0) - 1; \ |
| 67 | const int __off = 3 - ((start) / 32); \ |
| 68 | const int __shft = (start) & 31; \ |
| 69 | u32 __res; \ |
| 70 | \ |
| 71 | __res = resp[__off] >> __shft; \ |
| 72 | if (__size + __shft > 32) \ |
| 73 | __res |= resp[__off-1] << ((32 - __shft) % 32); \ |
| 74 | __res & __mask; \ |
| 75 | }) |
| 76 | |
Ritesh Harjani | a0b42c0 | 2016-12-01 10:12:22 +0530 | [diff] [blame] | 77 | static int mmc_switch_status(struct mmc_card *card, bool ignore_crc); |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 78 | /* |
| 79 | * Given the decoded CSD structure, decode the raw CID to our CID structure. |
| 80 | */ |
Pierre Ossman | bd76631 | 2007-05-01 16:11:57 +0200 | [diff] [blame] | 81 | static int mmc_decode_cid(struct mmc_card *card) |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 82 | { |
| 83 | u32 *resp = card->raw_cid; |
| 84 | |
| 85 | /* |
| 86 | * The selection of the format here is based upon published |
| 87 | * specs from sandisk and from what people have reported. |
| 88 | */ |
| 89 | switch (card->csd.mmca_vsn) { |
| 90 | case 0: /* MMC v1.0 - v1.2 */ |
| 91 | case 1: /* MMC v1.4 */ |
| 92 | card->cid.manfid = UNSTUFF_BITS(resp, 104, 24); |
| 93 | card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); |
| 94 | card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); |
| 95 | card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); |
| 96 | card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); |
| 97 | card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); |
| 98 | card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); |
| 99 | card->cid.prod_name[6] = UNSTUFF_BITS(resp, 48, 8); |
| 100 | card->cid.hwrev = UNSTUFF_BITS(resp, 44, 4); |
| 101 | card->cid.fwrev = UNSTUFF_BITS(resp, 40, 4); |
| 102 | card->cid.serial = UNSTUFF_BITS(resp, 16, 24); |
| 103 | card->cid.month = UNSTUFF_BITS(resp, 12, 4); |
| 104 | card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; |
| 105 | break; |
| 106 | |
| 107 | case 2: /* MMC v2.0 - v2.2 */ |
| 108 | case 3: /* MMC v3.1 - v3.3 */ |
| 109 | case 4: /* MMC v4 */ |
| 110 | card->cid.manfid = UNSTUFF_BITS(resp, 120, 8); |
| 111 | card->cid.oemid = UNSTUFF_BITS(resp, 104, 16); |
| 112 | card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); |
| 113 | card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); |
| 114 | card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); |
| 115 | card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); |
| 116 | card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); |
| 117 | card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); |
Bernie Thompson | 51e7e8b | 2013-02-27 12:19:17 -0800 | [diff] [blame] | 118 | card->cid.prv = UNSTUFF_BITS(resp, 48, 8); |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 119 | card->cid.serial = UNSTUFF_BITS(resp, 16, 32); |
| 120 | card->cid.month = UNSTUFF_BITS(resp, 12, 4); |
| 121 | card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; |
| 122 | break; |
| 123 | |
| 124 | default: |
Girish K S | a3c76eb | 2011-10-11 11:44:09 +0530 | [diff] [blame] | 125 | pr_err("%s: card has unknown MMCA version %d\n", |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 126 | mmc_hostname(card->host), card->csd.mmca_vsn); |
Pierre Ossman | bd76631 | 2007-05-01 16:11:57 +0200 | [diff] [blame] | 127 | return -EINVAL; |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 128 | } |
Pierre Ossman | bd76631 | 2007-05-01 16:11:57 +0200 | [diff] [blame] | 129 | |
| 130 | return 0; |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 131 | } |
| 132 | |
Adrian Hunter | dfe86cb | 2010-08-11 14:17:46 -0700 | [diff] [blame] | 133 | static void mmc_set_erase_size(struct mmc_card *card) |
| 134 | { |
| 135 | if (card->ext_csd.erase_group_def & 1) |
| 136 | card->erase_size = card->ext_csd.hc_erase_size; |
| 137 | else |
| 138 | card->erase_size = card->csd.erase_size; |
| 139 | |
| 140 | mmc_init_erase(card); |
| 141 | } |
| 142 | |
Talel Shenhar | f59f895 | 2015-02-08 13:36:57 +0200 | [diff] [blame] | 143 | static const struct mmc_fixup mmc_fixups[] = { |
| 144 | |
| 145 | /* avoid HPI for specific cards */ |
| 146 | MMC_FIXUP_EXT_CSD_REV("MMC16G", CID_MANFID_KINGSTON, CID_OEMID_ANY, |
| 147 | add_quirk, MMC_QUIRK_BROKEN_HPI, MMC_V4_41), |
| 148 | |
Talel Shenhar | 6f3a8c2 | 2015-02-12 10:12:39 +0200 | [diff] [blame] | 149 | /* Disable cache for specific cards */ |
| 150 | MMC_FIXUP("MMC16G", CID_MANFID_KINGSTON, CID_OEMID_ANY, |
| 151 | add_quirk_mmc, MMC_QUIRK_CACHE_DISABLE), |
| 152 | |
Talel Shenhar | f59f895 | 2015-02-08 13:36:57 +0200 | [diff] [blame] | 153 | END_FIXUP |
| 154 | }; |
| 155 | |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 156 | /* |
| 157 | * Given a 128-bit response, decode to our card CSD structure. |
| 158 | */ |
Pierre Ossman | bd76631 | 2007-05-01 16:11:57 +0200 | [diff] [blame] | 159 | static int mmc_decode_csd(struct mmc_card *card) |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 160 | { |
| 161 | struct mmc_csd *csd = &card->csd; |
Adrian Hunter | dfe86cb | 2010-08-11 14:17:46 -0700 | [diff] [blame] | 162 | unsigned int e, m, a, b; |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 163 | u32 *resp = card->raw_csd; |
| 164 | |
| 165 | /* |
| 166 | * We only understand CSD structure v1.1 and v1.2. |
| 167 | * v1.2 has extra information in bits 15, 11 and 10. |
Kyungmin Park | 6da24b7 | 2010-08-10 18:01:36 -0700 | [diff] [blame] | 168 | * We also support eMMC v4.4 & v4.41. |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 169 | */ |
Kyungmin Park | 6da24b7 | 2010-08-10 18:01:36 -0700 | [diff] [blame] | 170 | csd->structure = UNSTUFF_BITS(resp, 126, 2); |
| 171 | if (csd->structure == 0) { |
Girish K S | a3c76eb | 2011-10-11 11:44:09 +0530 | [diff] [blame] | 172 | pr_err("%s: unrecognised CSD structure version %d\n", |
Kyungmin Park | 6da24b7 | 2010-08-10 18:01:36 -0700 | [diff] [blame] | 173 | mmc_hostname(card->host), csd->structure); |
Pierre Ossman | bd76631 | 2007-05-01 16:11:57 +0200 | [diff] [blame] | 174 | return -EINVAL; |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 175 | } |
| 176 | |
| 177 | csd->mmca_vsn = UNSTUFF_BITS(resp, 122, 4); |
| 178 | m = UNSTUFF_BITS(resp, 115, 4); |
| 179 | e = UNSTUFF_BITS(resp, 112, 3); |
| 180 | csd->tacc_ns = (tacc_exp[e] * tacc_mant[m] + 9) / 10; |
| 181 | csd->tacc_clks = UNSTUFF_BITS(resp, 104, 8) * 100; |
| 182 | |
| 183 | m = UNSTUFF_BITS(resp, 99, 4); |
| 184 | e = UNSTUFF_BITS(resp, 96, 3); |
| 185 | csd->max_dtr = tran_exp[e] * tran_mant[m]; |
| 186 | csd->cmdclass = UNSTUFF_BITS(resp, 84, 12); |
| 187 | |
| 188 | e = UNSTUFF_BITS(resp, 47, 3); |
| 189 | m = UNSTUFF_BITS(resp, 62, 12); |
| 190 | csd->capacity = (1 + m) << (e + 2); |
| 191 | |
| 192 | csd->read_blkbits = UNSTUFF_BITS(resp, 80, 4); |
| 193 | csd->read_partial = UNSTUFF_BITS(resp, 79, 1); |
| 194 | csd->write_misalign = UNSTUFF_BITS(resp, 78, 1); |
| 195 | csd->read_misalign = UNSTUFF_BITS(resp, 77, 1); |
Sascha Hauer | 3d705d1 | 2014-08-19 10:45:51 +0200 | [diff] [blame] | 196 | csd->dsr_imp = UNSTUFF_BITS(resp, 76, 1); |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 197 | csd->r2w_factor = UNSTUFF_BITS(resp, 26, 3); |
| 198 | csd->write_blkbits = UNSTUFF_BITS(resp, 22, 4); |
| 199 | csd->write_partial = UNSTUFF_BITS(resp, 21, 1); |
Pierre Ossman | bd76631 | 2007-05-01 16:11:57 +0200 | [diff] [blame] | 200 | |
Adrian Hunter | dfe86cb | 2010-08-11 14:17:46 -0700 | [diff] [blame] | 201 | if (csd->write_blkbits >= 9) { |
| 202 | a = UNSTUFF_BITS(resp, 42, 5); |
| 203 | b = UNSTUFF_BITS(resp, 37, 5); |
| 204 | csd->erase_size = (a + 1) * (b + 1); |
| 205 | csd->erase_size <<= csd->write_blkbits - 9; |
| 206 | } |
| 207 | |
Pierre Ossman | bd76631 | 2007-05-01 16:11:57 +0200 | [diff] [blame] | 208 | return 0; |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 209 | } |
| 210 | |
Seungwon Jeon | 96cf5f0 | 2012-04-25 16:17:37 +0900 | [diff] [blame] | 211 | static void mmc_select_card_type(struct mmc_card *card) |
| 212 | { |
| 213 | struct mmc_host *host = card->host; |
Seungwon Jeon | 0a5b643 | 2014-04-23 17:14:58 +0900 | [diff] [blame] | 214 | u8 card_type = card->ext_csd.raw_card_type; |
Lee Jones | 5f1a4dd | 2012-11-14 12:35:51 +0000 | [diff] [blame] | 215 | u32 caps = host->caps, caps2 = host->caps2; |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame] | 216 | unsigned int hs_max_dtr = 0, hs200_max_dtr = 0; |
Seungwon Jeon | 2415c0e | 2014-04-23 17:07:58 +0900 | [diff] [blame] | 217 | unsigned int avail_type = 0; |
Seungwon Jeon | 96cf5f0 | 2012-04-25 16:17:37 +0900 | [diff] [blame] | 218 | |
| 219 | if (caps & MMC_CAP_MMC_HIGHSPEED && |
Seungwon Jeon | 2415c0e | 2014-04-23 17:07:58 +0900 | [diff] [blame] | 220 | card_type & EXT_CSD_CARD_TYPE_HS_26) { |
| 221 | hs_max_dtr = MMC_HIGH_26_MAX_DTR; |
| 222 | avail_type |= EXT_CSD_CARD_TYPE_HS_26; |
| 223 | } |
| 224 | |
| 225 | if (caps & MMC_CAP_MMC_HIGHSPEED && |
| 226 | card_type & EXT_CSD_CARD_TYPE_HS_52) { |
Seungwon Jeon | 96cf5f0 | 2012-04-25 16:17:37 +0900 | [diff] [blame] | 227 | hs_max_dtr = MMC_HIGH_52_MAX_DTR; |
Seungwon Jeon | 2415c0e | 2014-04-23 17:07:58 +0900 | [diff] [blame] | 228 | avail_type |= EXT_CSD_CARD_TYPE_HS_52; |
| 229 | } |
Seungwon Jeon | 96cf5f0 | 2012-04-25 16:17:37 +0900 | [diff] [blame] | 230 | |
Seungwon Jeon | 2415c0e | 2014-04-23 17:07:58 +0900 | [diff] [blame] | 231 | if (caps & MMC_CAP_1_8V_DDR && |
| 232 | card_type & EXT_CSD_CARD_TYPE_DDR_1_8V) { |
Seungwon Jeon | 96cf5f0 | 2012-04-25 16:17:37 +0900 | [diff] [blame] | 233 | hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; |
Seungwon Jeon | 2415c0e | 2014-04-23 17:07:58 +0900 | [diff] [blame] | 234 | avail_type |= EXT_CSD_CARD_TYPE_DDR_1_8V; |
| 235 | } |
Seungwon Jeon | 96cf5f0 | 2012-04-25 16:17:37 +0900 | [diff] [blame] | 236 | |
Seungwon Jeon | 2415c0e | 2014-04-23 17:07:58 +0900 | [diff] [blame] | 237 | if (caps & MMC_CAP_1_2V_DDR && |
| 238 | card_type & EXT_CSD_CARD_TYPE_DDR_1_2V) { |
| 239 | hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; |
| 240 | avail_type |= EXT_CSD_CARD_TYPE_DDR_1_2V; |
| 241 | } |
| 242 | |
| 243 | if (caps2 & MMC_CAP2_HS200_1_8V_SDR && |
| 244 | card_type & EXT_CSD_CARD_TYPE_HS200_1_8V) { |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame] | 245 | hs200_max_dtr = MMC_HS200_MAX_DTR; |
Seungwon Jeon | 2415c0e | 2014-04-23 17:07:58 +0900 | [diff] [blame] | 246 | avail_type |= EXT_CSD_CARD_TYPE_HS200_1_8V; |
| 247 | } |
| 248 | |
| 249 | if (caps2 & MMC_CAP2_HS200_1_2V_SDR && |
| 250 | card_type & EXT_CSD_CARD_TYPE_HS200_1_2V) { |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame] | 251 | hs200_max_dtr = MMC_HS200_MAX_DTR; |
Seungwon Jeon | 2415c0e | 2014-04-23 17:07:58 +0900 | [diff] [blame] | 252 | avail_type |= EXT_CSD_CARD_TYPE_HS200_1_2V; |
| 253 | } |
Seungwon Jeon | 96cf5f0 | 2012-04-25 16:17:37 +0900 | [diff] [blame] | 254 | |
Seungwon Jeon | 0a5b643 | 2014-04-23 17:14:58 +0900 | [diff] [blame] | 255 | if (caps2 & MMC_CAP2_HS400_1_8V && |
| 256 | card_type & EXT_CSD_CARD_TYPE_HS400_1_8V) { |
| 257 | hs200_max_dtr = MMC_HS200_MAX_DTR; |
| 258 | avail_type |= EXT_CSD_CARD_TYPE_HS400_1_8V; |
| 259 | } |
| 260 | |
| 261 | if (caps2 & MMC_CAP2_HS400_1_2V && |
| 262 | card_type & EXT_CSD_CARD_TYPE_HS400_1_2V) { |
| 263 | hs200_max_dtr = MMC_HS200_MAX_DTR; |
| 264 | avail_type |= EXT_CSD_CARD_TYPE_HS400_1_2V; |
| 265 | } |
| 266 | |
Shawn Lin | 81ac2af | 2016-05-26 09:56:22 +0800 | [diff] [blame] | 267 | if ((caps2 & MMC_CAP2_HS400_ES) && |
| 268 | card->ext_csd.strobe_support && |
| 269 | (avail_type & EXT_CSD_CARD_TYPE_HS400)) |
| 270 | avail_type |= EXT_CSD_CARD_TYPE_HS400ES; |
| 271 | |
Seungwon Jeon | 96cf5f0 | 2012-04-25 16:17:37 +0900 | [diff] [blame] | 272 | card->ext_csd.hs_max_dtr = hs_max_dtr; |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame] | 273 | card->ext_csd.hs200_max_dtr = hs200_max_dtr; |
Seungwon Jeon | 2415c0e | 2014-04-23 17:07:58 +0900 | [diff] [blame] | 274 | card->mmc_avail_type = avail_type; |
Seungwon Jeon | 96cf5f0 | 2012-04-25 16:17:37 +0900 | [diff] [blame] | 275 | } |
| 276 | |
Grégory Soutadé | b4493ee | 2014-09-15 17:47:06 +0200 | [diff] [blame] | 277 | static void mmc_manage_enhanced_area(struct mmc_card *card, u8 *ext_csd) |
| 278 | { |
Grégory Soutadé | 994324b | 2014-09-15 17:47:11 +0200 | [diff] [blame] | 279 | u8 hc_erase_grp_sz, hc_wp_grp_sz; |
| 280 | |
| 281 | /* |
| 282 | * Disable these attributes by default |
| 283 | */ |
| 284 | card->ext_csd.enhanced_area_offset = -EINVAL; |
| 285 | card->ext_csd.enhanced_area_size = -EINVAL; |
Grégory Soutadé | b4493ee | 2014-09-15 17:47:06 +0200 | [diff] [blame] | 286 | |
| 287 | /* |
| 288 | * Enhanced area feature support -- check whether the eMMC |
| 289 | * card has the Enhanced area enabled. If so, export enhanced |
| 290 | * area offset and size to user by adding sysfs interface. |
| 291 | */ |
| 292 | if ((ext_csd[EXT_CSD_PARTITION_SUPPORT] & 0x2) && |
| 293 | (ext_csd[EXT_CSD_PARTITION_ATTRIBUTE] & 0x1)) { |
Grégory Soutadé | 994324b | 2014-09-15 17:47:11 +0200 | [diff] [blame] | 294 | if (card->ext_csd.partition_setting_completed) { |
| 295 | hc_erase_grp_sz = |
| 296 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; |
| 297 | hc_wp_grp_sz = |
| 298 | ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; |
Grégory Soutadé | b4493ee | 2014-09-15 17:47:06 +0200 | [diff] [blame] | 299 | |
Grégory Soutadé | 994324b | 2014-09-15 17:47:11 +0200 | [diff] [blame] | 300 | /* |
| 301 | * calculate the enhanced data area offset, in bytes |
| 302 | */ |
| 303 | card->ext_csd.enhanced_area_offset = |
Kuninori Morimoto | ded8a5f | 2015-05-11 07:34:53 +0000 | [diff] [blame] | 304 | (((unsigned long long)ext_csd[139]) << 24) + |
| 305 | (((unsigned long long)ext_csd[138]) << 16) + |
| 306 | (((unsigned long long)ext_csd[137]) << 8) + |
| 307 | (((unsigned long long)ext_csd[136])); |
Grégory Soutadé | 994324b | 2014-09-15 17:47:11 +0200 | [diff] [blame] | 308 | if (mmc_card_blockaddr(card)) |
| 309 | card->ext_csd.enhanced_area_offset <<= 9; |
| 310 | /* |
| 311 | * calculate the enhanced data area size, in kilobytes |
| 312 | */ |
| 313 | card->ext_csd.enhanced_area_size = |
| 314 | (ext_csd[142] << 16) + (ext_csd[141] << 8) + |
| 315 | ext_csd[140]; |
| 316 | card->ext_csd.enhanced_area_size *= |
| 317 | (size_t)(hc_erase_grp_sz * hc_wp_grp_sz); |
| 318 | card->ext_csd.enhanced_area_size <<= 9; |
| 319 | } else { |
| 320 | pr_warn("%s: defines enhanced area without partition setting complete\n", |
| 321 | mmc_hostname(card->host)); |
| 322 | } |
Grégory Soutadé | b4493ee | 2014-09-15 17:47:06 +0200 | [diff] [blame] | 323 | } |
| 324 | } |
| 325 | |
| 326 | static void mmc_manage_gp_partitions(struct mmc_card *card, u8 *ext_csd) |
| 327 | { |
Grégory Soutadé | b4493ee | 2014-09-15 17:47:06 +0200 | [diff] [blame] | 328 | int idx; |
Grégory Soutadé | 994324b | 2014-09-15 17:47:11 +0200 | [diff] [blame] | 329 | u8 hc_erase_grp_sz, hc_wp_grp_sz; |
| 330 | unsigned int part_size; |
Grégory Soutadé | b4493ee | 2014-09-15 17:47:06 +0200 | [diff] [blame] | 331 | |
| 332 | /* |
| 333 | * General purpose partition feature support -- |
| 334 | * If ext_csd has the size of general purpose partitions, |
| 335 | * set size, part_cfg, partition name in mmc_part. |
| 336 | */ |
| 337 | if (ext_csd[EXT_CSD_PARTITION_SUPPORT] & |
| 338 | EXT_CSD_PART_SUPPORT_PART_EN) { |
Grégory Soutadé | 994324b | 2014-09-15 17:47:11 +0200 | [diff] [blame] | 339 | hc_erase_grp_sz = |
| 340 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; |
| 341 | hc_wp_grp_sz = |
| 342 | ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; |
Grégory Soutadé | b4493ee | 2014-09-15 17:47:06 +0200 | [diff] [blame] | 343 | |
| 344 | for (idx = 0; idx < MMC_NUM_GP_PARTITION; idx++) { |
| 345 | if (!ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3] && |
| 346 | !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] && |
| 347 | !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2]) |
| 348 | continue; |
Grégory Soutadé | 994324b | 2014-09-15 17:47:11 +0200 | [diff] [blame] | 349 | if (card->ext_csd.partition_setting_completed == 0) { |
| 350 | pr_warn("%s: has partition size defined without partition complete\n", |
| 351 | mmc_hostname(card->host)); |
| 352 | break; |
| 353 | } |
Grégory Soutadé | b4493ee | 2014-09-15 17:47:06 +0200 | [diff] [blame] | 354 | part_size = |
| 355 | (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2] |
| 356 | << 16) + |
| 357 | (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] |
| 358 | << 8) + |
| 359 | ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3]; |
| 360 | part_size *= (size_t)(hc_erase_grp_sz * |
| 361 | hc_wp_grp_sz); |
| 362 | mmc_part_add(card, part_size << 19, |
| 363 | EXT_CSD_PART_CONFIG_ACC_GP0 + idx, |
| 364 | "gp%d", idx, false, |
| 365 | MMC_BLK_DATA_AREA_GP); |
| 366 | } |
| 367 | } |
| 368 | } |
| 369 | |
Adrian Hunter | 1c44711 | 2016-05-05 08:12:28 +0300 | [diff] [blame] | 370 | /* Minimum partition switch timeout in milliseconds */ |
| 371 | #define MMC_MIN_PART_SWITCH_TIME 300 |
| 372 | |
Philip Rakity | 08ee80c | 2011-05-24 18:14:58 -0700 | [diff] [blame] | 373 | /* |
| 374 | * Decode extended CSD. |
| 375 | */ |
Ulf Hansson | 076ec38 | 2014-10-20 13:37:24 +0200 | [diff] [blame] | 376 | static int mmc_decode_ext_csd(struct mmc_card *card, u8 *ext_csd) |
Philip Rakity | 08ee80c | 2011-05-24 18:14:58 -0700 | [diff] [blame] | 377 | { |
Namjae Jeon | e0c368d | 2011-10-06 23:41:38 +0900 | [diff] [blame] | 378 | int err = 0, idx; |
| 379 | unsigned int part_size; |
Hans de Goede | 81f8a7b | 2015-04-01 17:26:23 +0200 | [diff] [blame] | 380 | struct device_node *np; |
| 381 | bool broken_hpi = false; |
Philip Rakity | 08ee80c | 2011-05-24 18:14:58 -0700 | [diff] [blame] | 382 | |
Kyungmin Park | 6da24b7 | 2010-08-10 18:01:36 -0700 | [diff] [blame] | 383 | /* Version is coded in the CSD_STRUCTURE byte in the EXT_CSD register */ |
Philip Rakity | f39b2dd9 | 2011-07-07 09:04:55 -0700 | [diff] [blame] | 384 | card->ext_csd.raw_ext_csd_structure = ext_csd[EXT_CSD_STRUCTURE]; |
Kyungmin Park | 6da24b7 | 2010-08-10 18:01:36 -0700 | [diff] [blame] | 385 | if (card->csd.structure == 3) { |
Philip Rakity | f39b2dd9 | 2011-07-07 09:04:55 -0700 | [diff] [blame] | 386 | if (card->ext_csd.raw_ext_csd_structure > 2) { |
Girish K S | a3c76eb | 2011-10-11 11:44:09 +0530 | [diff] [blame] | 387 | pr_err("%s: unrecognised EXT_CSD structure " |
Kyungmin Park | 6da24b7 | 2010-08-10 18:01:36 -0700 | [diff] [blame] | 388 | "version %d\n", mmc_hostname(card->host), |
Philip Rakity | f39b2dd9 | 2011-07-07 09:04:55 -0700 | [diff] [blame] | 389 | card->ext_csd.raw_ext_csd_structure); |
Kyungmin Park | 6da24b7 | 2010-08-10 18:01:36 -0700 | [diff] [blame] | 390 | err = -EINVAL; |
| 391 | goto out; |
| 392 | } |
| 393 | } |
| 394 | |
Hans de Goede | 81f8a7b | 2015-04-01 17:26:23 +0200 | [diff] [blame] | 395 | np = mmc_of_find_child_device(card->host, 0); |
| 396 | if (np && of_device_is_compatible(np, "mmc-card")) |
| 397 | broken_hpi = of_property_read_bool(np, "broken-hpi"); |
| 398 | of_node_put(np); |
| 399 | |
Romain Izard | 03a5943 | 2014-06-27 10:51:07 +0200 | [diff] [blame] | 400 | /* |
| 401 | * The EXT_CSD format is meant to be forward compatible. As long |
| 402 | * as CSD_STRUCTURE does not change, all values for EXT_CSD_REV |
| 403 | * are authorized, see JEDEC JESD84-B50 section B.8. |
| 404 | */ |
Jarkko Lavinen | b1ebe38 | 2009-09-22 16:44:34 -0700 | [diff] [blame] | 405 | card->ext_csd.rev = ext_csd[EXT_CSD_REV]; |
Pierre Ossman | d7604d7 | 2007-07-23 00:34:07 +0200 | [diff] [blame] | 406 | |
Philip Rakity | f39b2dd9 | 2011-07-07 09:04:55 -0700 | [diff] [blame] | 407 | card->ext_csd.raw_sectors[0] = ext_csd[EXT_CSD_SEC_CNT + 0]; |
| 408 | card->ext_csd.raw_sectors[1] = ext_csd[EXT_CSD_SEC_CNT + 1]; |
| 409 | card->ext_csd.raw_sectors[2] = ext_csd[EXT_CSD_SEC_CNT + 2]; |
| 410 | card->ext_csd.raw_sectors[3] = ext_csd[EXT_CSD_SEC_CNT + 3]; |
Jarkko Lavinen | b1ebe38 | 2009-09-22 16:44:34 -0700 | [diff] [blame] | 411 | if (card->ext_csd.rev >= 2) { |
Pierre Ossman | d7604d7 | 2007-07-23 00:34:07 +0200 | [diff] [blame] | 412 | card->ext_csd.sectors = |
| 413 | ext_csd[EXT_CSD_SEC_CNT + 0] << 0 | |
| 414 | ext_csd[EXT_CSD_SEC_CNT + 1] << 8 | |
| 415 | ext_csd[EXT_CSD_SEC_CNT + 2] << 16 | |
| 416 | ext_csd[EXT_CSD_SEC_CNT + 3] << 24; |
Hanumath Prasad | fc8a098 | 2010-08-10 18:01:45 -0700 | [diff] [blame] | 417 | |
| 418 | /* Cards with density > 2GiB are sector addressed */ |
| 419 | if (card->ext_csd.sectors > (2u * 1024 * 1024 * 1024) / 512) |
Pierre Ossman | d7604d7 | 2007-07-23 00:34:07 +0200 | [diff] [blame] | 420 | mmc_card_set_blockaddr(card); |
| 421 | } |
Seungwon Jeon | 96cf5f0 | 2012-04-25 16:17:37 +0900 | [diff] [blame] | 422 | |
Shawn Lin | 81ac2af | 2016-05-26 09:56:22 +0800 | [diff] [blame] | 423 | card->ext_csd.strobe_support = ext_csd[EXT_CSD_STROBE_SUPPORT]; |
Philip Rakity | f39b2dd9 | 2011-07-07 09:04:55 -0700 | [diff] [blame] | 424 | card->ext_csd.raw_card_type = ext_csd[EXT_CSD_CARD_TYPE]; |
Seungwon Jeon | 96cf5f0 | 2012-04-25 16:17:37 +0900 | [diff] [blame] | 425 | mmc_select_card_type(card); |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 426 | |
Philip Rakity | f39b2dd9 | 2011-07-07 09:04:55 -0700 | [diff] [blame] | 427 | card->ext_csd.raw_s_a_timeout = ext_csd[EXT_CSD_S_A_TIMEOUT]; |
| 428 | card->ext_csd.raw_erase_timeout_mult = |
| 429 | ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; |
| 430 | card->ext_csd.raw_hc_erase_grp_size = |
| 431 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; |
Jarkko Lavinen | b1ebe38 | 2009-09-22 16:44:34 -0700 | [diff] [blame] | 432 | if (card->ext_csd.rev >= 3) { |
| 433 | u8 sa_shift = ext_csd[EXT_CSD_S_A_TIMEOUT]; |
Andrei Warkentin | 371a689 | 2011-04-11 18:10:25 -0500 | [diff] [blame] | 434 | card->ext_csd.part_config = ext_csd[EXT_CSD_PART_CONFIG]; |
| 435 | |
| 436 | /* EXT_CSD value is in units of 10ms, but we store in ms */ |
| 437 | card->ext_csd.part_time = 10 * ext_csd[EXT_CSD_PART_SWITCH_TIME]; |
Adrian Hunter | 1c44711 | 2016-05-05 08:12:28 +0300 | [diff] [blame] | 438 | /* Some eMMC set the value too low so set a minimum */ |
| 439 | if (card->ext_csd.part_time && |
| 440 | card->ext_csd.part_time < MMC_MIN_PART_SWITCH_TIME) |
| 441 | card->ext_csd.part_time = MMC_MIN_PART_SWITCH_TIME; |
Jarkko Lavinen | b1ebe38 | 2009-09-22 16:44:34 -0700 | [diff] [blame] | 442 | |
| 443 | /* Sleep / awake timeout in 100ns units */ |
| 444 | if (sa_shift > 0 && sa_shift <= 0x17) |
| 445 | card->ext_csd.sa_timeout = |
| 446 | 1 << ext_csd[EXT_CSD_S_A_TIMEOUT]; |
Adrian Hunter | dfe86cb | 2010-08-11 14:17:46 -0700 | [diff] [blame] | 447 | card->ext_csd.erase_group_def = |
| 448 | ext_csd[EXT_CSD_ERASE_GROUP_DEF]; |
| 449 | card->ext_csd.hc_erase_timeout = 300 * |
| 450 | ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; |
| 451 | card->ext_csd.hc_erase_size = |
| 452 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] << 10; |
Andrei Warkentin | f4c5522 | 2011-03-31 18:40:00 -0500 | [diff] [blame] | 453 | |
| 454 | card->ext_csd.rel_sectors = ext_csd[EXT_CSD_REL_WR_SEC_C]; |
Andrei Warkentin | 371a689 | 2011-04-11 18:10:25 -0500 | [diff] [blame] | 455 | |
| 456 | /* |
| 457 | * There are two boot regions of equal size, defined in |
| 458 | * multiples of 128K. |
| 459 | */ |
Namjae Jeon | e0c368d | 2011-10-06 23:41:38 +0900 | [diff] [blame] | 460 | if (ext_csd[EXT_CSD_BOOT_MULT] && mmc_boot_partition_access(card->host)) { |
| 461 | for (idx = 0; idx < MMC_NUM_BOOT_PARTITION; idx++) { |
| 462 | part_size = ext_csd[EXT_CSD_BOOT_MULT] << 17; |
| 463 | mmc_part_add(card, part_size, |
| 464 | EXT_CSD_PART_CONFIG_ACC_BOOT0 + idx, |
Johan Rudholm | add710e | 2011-12-02 08:51:06 +0100 | [diff] [blame] | 465 | "boot%d", idx, true, |
| 466 | MMC_BLK_DATA_AREA_BOOT); |
Namjae Jeon | e0c368d | 2011-10-06 23:41:38 +0900 | [diff] [blame] | 467 | } |
| 468 | } |
Jarkko Lavinen | b1ebe38 | 2009-09-22 16:44:34 -0700 | [diff] [blame] | 469 | } |
| 470 | |
Philip Rakity | f39b2dd9 | 2011-07-07 09:04:55 -0700 | [diff] [blame] | 471 | card->ext_csd.raw_hc_erase_gap_size = |
Jurgen Heeks | dd13b4e | 2012-02-01 13:30:55 +0100 | [diff] [blame] | 472 | ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; |
Philip Rakity | f39b2dd9 | 2011-07-07 09:04:55 -0700 | [diff] [blame] | 473 | card->ext_csd.raw_sec_trim_mult = |
| 474 | ext_csd[EXT_CSD_SEC_TRIM_MULT]; |
| 475 | card->ext_csd.raw_sec_erase_mult = |
| 476 | ext_csd[EXT_CSD_SEC_ERASE_MULT]; |
| 477 | card->ext_csd.raw_sec_feature_support = |
| 478 | ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; |
| 479 | card->ext_csd.raw_trim_mult = |
| 480 | ext_csd[EXT_CSD_TRIM_MULT]; |
Philip Rakity | 836dc2f | 2013-04-04 20:18:11 +0100 | [diff] [blame] | 481 | card->ext_csd.raw_partition_support = ext_csd[EXT_CSD_PARTITION_SUPPORT]; |
Adrian Hunter | b097e07 | 2015-02-06 14:12:57 +0200 | [diff] [blame] | 482 | card->ext_csd.raw_driver_strength = ext_csd[EXT_CSD_DRIVER_STRENGTH]; |
Adrian Hunter | dfe86cb | 2010-08-11 14:17:46 -0700 | [diff] [blame] | 483 | if (card->ext_csd.rev >= 4) { |
Grégory Soutadé | 69803d4 | 2014-09-15 17:47:09 +0200 | [diff] [blame] | 484 | if (ext_csd[EXT_CSD_PARTITION_SETTING_COMPLETED] & |
| 485 | EXT_CSD_PART_SETTING_COMPLETED) |
| 486 | card->ext_csd.partition_setting_completed = 1; |
| 487 | else |
| 488 | card->ext_csd.partition_setting_completed = 0; |
| 489 | |
Grégory Soutadé | b4493ee | 2014-09-15 17:47:06 +0200 | [diff] [blame] | 490 | mmc_manage_enhanced_area(card, ext_csd); |
Chuanxiao Dong | 709de99 | 2011-01-22 04:09:41 +0800 | [diff] [blame] | 491 | |
Grégory Soutadé | b4493ee | 2014-09-15 17:47:06 +0200 | [diff] [blame] | 492 | mmc_manage_gp_partitions(card, ext_csd); |
Namjae Jeon | e0c368d | 2011-10-06 23:41:38 +0900 | [diff] [blame] | 493 | |
Adrian Hunter | dfe86cb | 2010-08-11 14:17:46 -0700 | [diff] [blame] | 494 | card->ext_csd.sec_trim_mult = |
| 495 | ext_csd[EXT_CSD_SEC_TRIM_MULT]; |
| 496 | card->ext_csd.sec_erase_mult = |
| 497 | ext_csd[EXT_CSD_SEC_ERASE_MULT]; |
| 498 | card->ext_csd.sec_feature_support = |
| 499 | ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; |
| 500 | card->ext_csd.trim_timeout = 300 * |
| 501 | ext_csd[EXT_CSD_TRIM_MULT]; |
Johan Rudholm | add710e | 2011-12-02 08:51:06 +0100 | [diff] [blame] | 502 | |
| 503 | /* |
| 504 | * Note that the call to mmc_part_add above defaults to read |
| 505 | * only. If this default assumption is changed, the call must |
| 506 | * take into account the value of boot_locked below. |
| 507 | */ |
| 508 | card->ext_csd.boot_ro_lock = ext_csd[EXT_CSD_BOOT_WP]; |
| 509 | card->ext_csd.boot_ro_lockable = true; |
Fredrik Soderstedt | 6044371 | 2013-04-23 16:27:07 +0200 | [diff] [blame] | 510 | |
| 511 | /* Save power class values */ |
| 512 | card->ext_csd.raw_pwr_cl_52_195 = |
| 513 | ext_csd[EXT_CSD_PWR_CL_52_195]; |
| 514 | card->ext_csd.raw_pwr_cl_26_195 = |
| 515 | ext_csd[EXT_CSD_PWR_CL_26_195]; |
| 516 | card->ext_csd.raw_pwr_cl_52_360 = |
| 517 | ext_csd[EXT_CSD_PWR_CL_52_360]; |
| 518 | card->ext_csd.raw_pwr_cl_26_360 = |
| 519 | ext_csd[EXT_CSD_PWR_CL_26_360]; |
| 520 | card->ext_csd.raw_pwr_cl_200_195 = |
| 521 | ext_csd[EXT_CSD_PWR_CL_200_195]; |
| 522 | card->ext_csd.raw_pwr_cl_200_360 = |
| 523 | ext_csd[EXT_CSD_PWR_CL_200_360]; |
| 524 | card->ext_csd.raw_pwr_cl_ddr_52_195 = |
| 525 | ext_csd[EXT_CSD_PWR_CL_DDR_52_195]; |
| 526 | card->ext_csd.raw_pwr_cl_ddr_52_360 = |
| 527 | ext_csd[EXT_CSD_PWR_CL_DDR_52_360]; |
Seungwon Jeon | 0a5b643 | 2014-04-23 17:14:58 +0900 | [diff] [blame] | 528 | card->ext_csd.raw_pwr_cl_ddr_200_360 = |
| 529 | ext_csd[EXT_CSD_PWR_CL_DDR_200_360]; |
Adrian Hunter | dfe86cb | 2010-08-11 14:17:46 -0700 | [diff] [blame] | 530 | } |
| 531 | |
Talel Shenhar | 981300a | 2015-02-05 14:44:15 +0200 | [diff] [blame] | 532 | /* check whether the eMMC card supports HPI */ |
| 533 | if ((ext_csd[EXT_CSD_HPI_FEATURES] & 0x1) && |
| 534 | !(card->quirks & MMC_QUIRK_BROKEN_HPI)) { |
| 535 | card->ext_csd.hpi = 1; |
| 536 | if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x2) |
| 537 | card->ext_csd.hpi_cmd = MMC_STOP_TRANSMISSION; |
| 538 | else |
| 539 | card->ext_csd.hpi_cmd = MMC_SEND_STATUS; |
| 540 | /* |
| 541 | * Indicate the maximum timeout to close |
| 542 | * a command interrupted by HPI |
| 543 | */ |
| 544 | card->ext_csd.out_of_int_time = |
| 545 | ext_csd[EXT_CSD_OUT_OF_INTERRUPT_TIME] * 10; |
Dov Levenglick | a029639 | 2015-06-24 19:51:58 +0300 | [diff] [blame] | 546 | pr_info("%s: Out-of-interrupt timeout is %d[ms]\n", |
| 547 | mmc_hostname(card->host), |
| 548 | card->ext_csd.out_of_int_time); |
Talel Shenhar | 981300a | 2015-02-05 14:44:15 +0200 | [diff] [blame] | 549 | } |
| 550 | |
Adrian Hunter | b249951 | 2011-08-29 16:42:11 +0300 | [diff] [blame] | 551 | if (card->ext_csd.rev >= 5) { |
Romain Izard | 7c4f10a | 2013-06-14 14:25:44 +0200 | [diff] [blame] | 552 | /* Adjust production date as per JEDEC JESD84-B451 */ |
| 553 | if (card->cid.year < 2010) |
| 554 | card->cid.year += 16; |
| 555 | |
Jaehoon Chung | 950d56a | 2012-09-17 08:42:02 +0000 | [diff] [blame] | 556 | /* check whether the eMMC card supports BKOPS */ |
Pratibhasagar V | 5320226 | 2016-06-09 18:09:31 -0400 | [diff] [blame] | 557 | if (!mmc_card_broken_hpi(card) && |
Talel Shenhar | 981300a | 2015-02-05 14:44:15 +0200 | [diff] [blame] | 558 | (ext_csd[EXT_CSD_BKOPS_SUPPORT] & 0x1) && |
| 559 | card->ext_csd.hpi) { |
Jaehoon Chung | 950d56a | 2012-09-17 08:42:02 +0000 | [diff] [blame] | 560 | card->ext_csd.bkops = 1; |
Subhash Jadavani | 0a3b83c | 2016-05-12 11:58:15 -0700 | [diff] [blame] | 561 | card->ext_csd.bkops_en = ext_csd[EXT_CSD_BKOPS_EN]; |
Jaehoon Chung | 950d56a | 2012-09-17 08:42:02 +0000 | [diff] [blame] | 562 | card->ext_csd.raw_bkops_status = |
| 563 | ext_csd[EXT_CSD_BKOPS_STATUS]; |
Subhash Jadavani | 0a3b83c | 2016-05-12 11:58:15 -0700 | [diff] [blame] | 564 | if (!card->ext_csd.bkops_en) |
Dov Levenglick | a029639 | 2015-06-24 19:51:58 +0300 | [diff] [blame] | 565 | pr_info("%s: BKOPS_EN equals 0x%x\n", |
| 566 | mmc_hostname(card->host), |
Subhash Jadavani | 0a3b83c | 2016-05-12 11:58:15 -0700 | [diff] [blame] | 567 | card->ext_csd.bkops_en); |
Jaehoon Chung | 950d56a | 2012-09-17 08:42:02 +0000 | [diff] [blame] | 568 | } |
| 569 | |
Jaehoon Chung | eb0d8f1 | 2011-10-18 01:26:42 -0400 | [diff] [blame] | 570 | /* check whether the eMMC card supports HPI */ |
Pratibhasagar V | 5320226 | 2016-06-09 18:09:31 -0400 | [diff] [blame] | 571 | if (!mmc_card_broken_hpi(card) && |
| 572 | !broken_hpi && (ext_csd[EXT_CSD_HPI_FEATURES] & 0x1)) { |
Jaehoon Chung | eb0d8f1 | 2011-10-18 01:26:42 -0400 | [diff] [blame] | 573 | card->ext_csd.hpi = 1; |
| 574 | if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x2) |
| 575 | card->ext_csd.hpi_cmd = MMC_STOP_TRANSMISSION; |
| 576 | else |
| 577 | card->ext_csd.hpi_cmd = MMC_SEND_STATUS; |
| 578 | /* |
| 579 | * Indicate the maximum timeout to close |
| 580 | * a command interrupted by HPI |
| 581 | */ |
| 582 | card->ext_csd.out_of_int_time = |
| 583 | ext_csd[EXT_CSD_OUT_OF_INTERRUPT_TIME] * 10; |
| 584 | } |
| 585 | |
Andrei Warkentin | f4c5522 | 2011-03-31 18:40:00 -0500 | [diff] [blame] | 586 | card->ext_csd.rel_param = ext_csd[EXT_CSD_WR_REL_PARAM]; |
Adrian Hunter | b249951 | 2011-08-29 16:42:11 +0300 | [diff] [blame] | 587 | card->ext_csd.rst_n_function = ext_csd[EXT_CSD_RST_N_FUNCTION]; |
Loic Pallardy | 090d25f | 2012-11-17 18:08:24 -0500 | [diff] [blame] | 588 | |
| 589 | /* |
xiaonian | f36ff08 | 2015-07-16 14:39:32 +0800 | [diff] [blame] | 590 | * Some eMMC vendors violate eMMC 5.0 spec and set |
| 591 | * REL_WR_SEC_C register to 0x10 to indicate the |
| 592 | * ability of RPMB throughput improvement thus lead |
| 593 | * to failure when TZ module write data to RPMB |
| 594 | * partition. So check bit[4] of EXT_CSD[166] and |
| 595 | * if it is not set then change value of REL_WR_SEC_C |
| 596 | * to 0x1 directly ignoring value of EXT_CSD[222]. |
| 597 | */ |
| 598 | if (!(card->ext_csd.rel_param & |
| 599 | EXT_CSD_WR_REL_PARAM_EN_RPMB_REL_WR)) |
| 600 | card->ext_csd.rel_sectors = 0x1; |
| 601 | |
| 602 | /* |
Loic Pallardy | 090d25f | 2012-11-17 18:08:24 -0500 | [diff] [blame] | 603 | * RPMB regions are defined in multiples of 128K. |
| 604 | */ |
| 605 | card->ext_csd.raw_rpmb_size_mult = ext_csd[EXT_CSD_RPMB_MULT]; |
Balaji T K | d0123cc | 2013-01-25 17:00:30 +0530 | [diff] [blame] | 606 | if (ext_csd[EXT_CSD_RPMB_MULT] && mmc_host_cmd23(card->host)) { |
Loic Pallardy | 090d25f | 2012-11-17 18:08:24 -0500 | [diff] [blame] | 607 | mmc_part_add(card, ext_csd[EXT_CSD_RPMB_MULT] << 17, |
| 608 | EXT_CSD_PART_CONFIG_ACC_RPMB, |
| 609 | "rpmb", 0, false, |
| 610 | MMC_BLK_DATA_AREA_RPMB); |
| 611 | } |
Adrian Hunter | b249951 | 2011-08-29 16:42:11 +0300 | [diff] [blame] | 612 | } |
Andrei Warkentin | f4c5522 | 2011-03-31 18:40:00 -0500 | [diff] [blame] | 613 | |
Andrei Warkentin | 5238acb | 2011-09-24 12:12:30 -0400 | [diff] [blame] | 614 | card->ext_csd.raw_erased_mem_count = ext_csd[EXT_CSD_ERASED_MEM_CONT]; |
Adrian Hunter | dfe86cb | 2010-08-11 14:17:46 -0700 | [diff] [blame] | 615 | if (ext_csd[EXT_CSD_ERASED_MEM_CONT]) |
| 616 | card->erased_byte = 0xFF; |
| 617 | else |
| 618 | card->erased_byte = 0x0; |
| 619 | |
Seungwon Jeon | 336c716 | 2011-10-25 09:43:12 +0900 | [diff] [blame] | 620 | /* eMMC v4.5 or later */ |
Ulf Hansson | fe1b570 | 2016-11-04 18:32:33 +0100 | [diff] [blame] | 621 | card->ext_csd.generic_cmd6_time = DEFAULT_CMD6_TIMEOUT_MS; |
Girish K S | bec8726 | 2011-10-13 12:04:16 +0530 | [diff] [blame] | 622 | if (card->ext_csd.rev >= 6) { |
Seungwon Jeon | 336c716 | 2011-10-25 09:43:12 +0900 | [diff] [blame] | 623 | card->ext_csd.feature_support |= MMC_DISCARD_FEATURE; |
| 624 | |
Seungwon Jeon | b23cf0b | 2011-09-23 14:15:29 +0900 | [diff] [blame] | 625 | card->ext_csd.generic_cmd6_time = 10 * |
| 626 | ext_csd[EXT_CSD_GENERIC_CMD6_TIME]; |
Girish K S | bec8726 | 2011-10-13 12:04:16 +0530 | [diff] [blame] | 627 | card->ext_csd.power_off_longtime = 10 * |
| 628 | ext_csd[EXT_CSD_POWER_OFF_LONG_TIME]; |
Seungwon Jeon | b23cf0b | 2011-09-23 14:15:29 +0900 | [diff] [blame] | 629 | |
Seungwon Jeon | 336c716 | 2011-10-25 09:43:12 +0900 | [diff] [blame] | 630 | card->ext_csd.cache_size = |
| 631 | ext_csd[EXT_CSD_CACHE_SIZE + 0] << 0 | |
| 632 | ext_csd[EXT_CSD_CACHE_SIZE + 1] << 8 | |
| 633 | ext_csd[EXT_CSD_CACHE_SIZE + 2] << 16 | |
| 634 | ext_csd[EXT_CSD_CACHE_SIZE + 3] << 24; |
Saugata Das | 4265900 | 2011-12-21 13:09:17 +0530 | [diff] [blame] | 635 | |
| 636 | if (ext_csd[EXT_CSD_DATA_SECTOR_SIZE] == 1) |
| 637 | card->ext_csd.data_sector_size = 4096; |
| 638 | else |
| 639 | card->ext_csd.data_sector_size = 512; |
| 640 | |
| 641 | if ((ext_csd[EXT_CSD_DATA_TAG_SUPPORT] & 1) && |
| 642 | (ext_csd[EXT_CSD_TAG_UNIT_SIZE] <= 8)) { |
| 643 | card->ext_csd.data_tag_unit_size = |
| 644 | ((unsigned int) 1 << ext_csd[EXT_CSD_TAG_UNIT_SIZE]) * |
| 645 | (card->ext_csd.data_sector_size); |
| 646 | } else { |
| 647 | card->ext_csd.data_tag_unit_size = 0; |
| 648 | } |
Seungwon Jeon | abd9ac1 | 2013-02-06 17:01:43 +0900 | [diff] [blame] | 649 | |
| 650 | card->ext_csd.max_packed_writes = |
| 651 | ext_csd[EXT_CSD_MAX_PACKED_WRITES]; |
| 652 | card->ext_csd.max_packed_reads = |
| 653 | ext_csd[EXT_CSD_MAX_PACKED_READS]; |
Saugata Das | a5075eb | 2012-05-17 16:32:21 +0530 | [diff] [blame] | 654 | } else { |
| 655 | card->ext_csd.data_sector_size = 512; |
Seungwon Jeon | 336c716 | 2011-10-25 09:43:12 +0900 | [diff] [blame] | 656 | } |
Seungwon Jeon | 881d1c2 | 2011-10-14 14:03:21 +0900 | [diff] [blame] | 657 | |
Asutosh Das | 0b7dfe6 | 2014-03-21 11:14:51 +0530 | [diff] [blame] | 658 | if (card->ext_csd.rev >= 7) { |
Yi Sun | 041a381 | 2015-06-10 16:40:06 -0700 | [diff] [blame] | 659 | /* Enhance Strobe is supported since v5.1 which rev should be |
| 660 | * 8 but some eMMC devices can support it with rev 7. So handle |
| 661 | * Enhance Strobe here. |
| 662 | */ |
| 663 | card->ext_csd.strobe_support = ext_csd[EXT_CSD_STROBE_SUPPORT]; |
Asutosh Das | 0b7dfe6 | 2014-03-21 11:14:51 +0530 | [diff] [blame] | 664 | card->ext_csd.cmdq_support = ext_csd[EXT_CSD_CMDQ_SUPPORT]; |
Asutosh Das | c0c7c98 | 2015-07-09 17:35:22 +0530 | [diff] [blame] | 665 | card->ext_csd.fw_version = ext_csd[EXT_CSD_FIRMWARE_VERSION]; |
| 666 | pr_info("%s: eMMC FW version: 0x%02x\n", |
| 667 | mmc_hostname(card->host), |
| 668 | card->ext_csd.fw_version); |
Asutosh Das | 0b7dfe6 | 2014-03-21 11:14:51 +0530 | [diff] [blame] | 669 | if (card->ext_csd.cmdq_support) { |
| 670 | /* |
| 671 | * Queue Depth = N + 1, |
| 672 | * see JEDEC JESD84-B51 section 7.4.19 |
| 673 | */ |
| 674 | card->ext_csd.cmdq_depth = |
| 675 | ext_csd[EXT_CSD_CMDQ_DEPTH] + 1; |
| 676 | pr_info("%s: CMDQ supported: depth: %d\n", |
| 677 | mmc_hostname(card->host), |
| 678 | card->ext_csd.cmdq_depth); |
| 679 | } |
Sahitya Tummala | 61868a4 | 2015-05-28 16:54:19 +0530 | [diff] [blame] | 680 | card->ext_csd.barrier_support = |
| 681 | ext_csd[EXT_CSD_BARRIER_SUPPORT]; |
| 682 | card->ext_csd.cache_flush_policy = |
| 683 | ext_csd[EXT_CSD_CACHE_FLUSH_POLICY]; |
| 684 | pr_info("%s: cache barrier support %d flush policy %d\n", |
| 685 | mmc_hostname(card->host), |
| 686 | card->ext_csd.barrier_support, |
| 687 | card->ext_csd.cache_flush_policy); |
Krishna Konda | 66827627 | 2015-06-29 19:34:35 -0700 | [diff] [blame] | 688 | card->ext_csd.enhanced_rpmb_supported = |
| 689 | (card->ext_csd.rel_param & |
| 690 | EXT_CSD_WR_REL_PARAM_EN_RPMB_REL_WR); |
Asutosh Das | 0b7dfe6 | 2014-03-21 11:14:51 +0530 | [diff] [blame] | 691 | } else { |
| 692 | card->ext_csd.cmdq_support = 0; |
| 693 | card->ext_csd.cmdq_depth = 0; |
Sahitya Tummala | 61868a4 | 2015-05-28 16:54:19 +0530 | [diff] [blame] | 694 | card->ext_csd.barrier_support = 0; |
| 695 | card->ext_csd.cache_flush_policy = 0; |
Asutosh Das | 0b7dfe6 | 2014-03-21 11:14:51 +0530 | [diff] [blame] | 696 | } |
| 697 | |
Gwendal Grignou | 0f76242 | 2014-10-16 11:27:16 -0700 | [diff] [blame] | 698 | /* eMMC v5 or later */ |
| 699 | if (card->ext_csd.rev >= 7) { |
| 700 | memcpy(card->ext_csd.fwrev, &ext_csd[EXT_CSD_FIRMWARE_VERSION], |
| 701 | MMC_FIRMWARE_LEN); |
| 702 | card->ext_csd.ffu_capable = |
| 703 | (ext_csd[EXT_CSD_SUPPORTED_MODE] & 0x1) && |
| 704 | !(ext_csd[EXT_CSD_FW_CONFIG] & 0x1); |
Jungseung Lee | a02c754 | 2016-12-22 12:37:34 +0900 | [diff] [blame] | 705 | |
| 706 | card->ext_csd.pre_eol_info = ext_csd[EXT_CSD_PRE_EOL_INFO]; |
| 707 | card->ext_csd.device_life_time_est_typ_a = |
| 708 | ext_csd[EXT_CSD_DEVICE_LIFE_TIME_EST_TYP_A]; |
| 709 | card->ext_csd.device_life_time_est_typ_b = |
| 710 | ext_csd[EXT_CSD_DEVICE_LIFE_TIME_EST_TYP_B]; |
Gwendal Grignou | 0f76242 | 2014-10-16 11:27:16 -0700 | [diff] [blame] | 711 | } |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 712 | out: |
Philip Rakity | 08ee80c | 2011-05-24 18:14:58 -0700 | [diff] [blame] | 713 | return err; |
| 714 | } |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 715 | |
Ulf Hansson | 076ec38 | 2014-10-20 13:37:24 +0200 | [diff] [blame] | 716 | static int mmc_read_ext_csd(struct mmc_card *card) |
| 717 | { |
Sahitya Tummala | ace0684 | 2014-12-09 23:23:25 +0200 | [diff] [blame] | 718 | struct mmc_host *host = card->host; |
Ulf Hansson | c197787 | 2014-10-20 14:08:16 +0200 | [diff] [blame] | 719 | u8 *ext_csd; |
Ulf Hansson | 076ec38 | 2014-10-20 13:37:24 +0200 | [diff] [blame] | 720 | int err; |
| 721 | |
Ulf Hansson | c197787 | 2014-10-20 14:08:16 +0200 | [diff] [blame] | 722 | if (!mmc_can_ext_csd(card)) |
| 723 | return 0; |
| 724 | |
Ulf Hansson | 076ec38 | 2014-10-20 13:37:24 +0200 | [diff] [blame] | 725 | err = mmc_get_ext_csd(card, &ext_csd); |
Ulf Hansson | c197787 | 2014-10-20 14:08:16 +0200 | [diff] [blame] | 726 | if (err) { |
Sahitya Tummala | ace0684 | 2014-12-09 23:23:25 +0200 | [diff] [blame] | 727 | pr_err("%s: %s: mmc_get_ext_csd() fails %d\n", |
| 728 | mmc_hostname(host), __func__, err); |
| 729 | |
Ulf Hansson | c197787 | 2014-10-20 14:08:16 +0200 | [diff] [blame] | 730 | /* If the host or the card can't do the switch, |
| 731 | * fail more gracefully. */ |
| 732 | if ((err != -EINVAL) |
| 733 | && (err != -ENOSYS) |
| 734 | && (err != -EFAULT)) |
| 735 | return err; |
| 736 | |
| 737 | /* |
| 738 | * High capacity cards should have this "magic" size |
| 739 | * stored in their CSD. |
| 740 | */ |
| 741 | if (card->csd.capacity == (4096 * 512)) { |
| 742 | pr_err("%s: unable to read EXT_CSD on a possible high capacity card. Card will be ignored.\n", |
| 743 | mmc_hostname(card->host)); |
| 744 | } else { |
| 745 | pr_warn("%s: unable to read EXT_CSD, performance might suffer\n", |
| 746 | mmc_hostname(card->host)); |
| 747 | err = 0; |
| 748 | } |
| 749 | |
Ulf Hansson | 076ec38 | 2014-10-20 13:37:24 +0200 | [diff] [blame] | 750 | return err; |
Ulf Hansson | c197787 | 2014-10-20 14:08:16 +0200 | [diff] [blame] | 751 | } |
Ulf Hansson | 076ec38 | 2014-10-20 13:37:24 +0200 | [diff] [blame] | 752 | |
Sujit Reddy Thumma | 5cc09c9 | 2013-12-05 19:35:43 +0530 | [diff] [blame] | 753 | card->cached_ext_csd = ext_csd; |
Ulf Hansson | 076ec38 | 2014-10-20 13:37:24 +0200 | [diff] [blame] | 754 | err = mmc_decode_ext_csd(card, ext_csd); |
| 755 | kfree(ext_csd); |
| 756 | return err; |
| 757 | } |
| 758 | |
Philip Rakity | f39b2dd9 | 2011-07-07 09:04:55 -0700 | [diff] [blame] | 759 | static int mmc_compare_ext_csds(struct mmc_card *card, unsigned bus_width) |
Philip Rakity | 08ee80c | 2011-05-24 18:14:58 -0700 | [diff] [blame] | 760 | { |
| 761 | u8 *bw_ext_csd; |
| 762 | int err; |
| 763 | |
Philip Rakity | f39b2dd9 | 2011-07-07 09:04:55 -0700 | [diff] [blame] | 764 | if (bus_width == MMC_BUS_WIDTH_1) |
| 765 | return 0; |
Philip Rakity | 08ee80c | 2011-05-24 18:14:58 -0700 | [diff] [blame] | 766 | |
Philip Rakity | f39b2dd9 | 2011-07-07 09:04:55 -0700 | [diff] [blame] | 767 | err = mmc_get_ext_csd(card, &bw_ext_csd); |
Ulf Hansson | c197787 | 2014-10-20 14:08:16 +0200 | [diff] [blame] | 768 | if (err) |
| 769 | return err; |
Philip Rakity | 08ee80c | 2011-05-24 18:14:58 -0700 | [diff] [blame] | 770 | |
Philip Rakity | 08ee80c | 2011-05-24 18:14:58 -0700 | [diff] [blame] | 771 | /* only compare read only fields */ |
Jurgen Heeks | dd13b4e | 2012-02-01 13:30:55 +0100 | [diff] [blame] | 772 | err = !((card->ext_csd.raw_partition_support == |
Philip Rakity | 08ee80c | 2011-05-24 18:14:58 -0700 | [diff] [blame] | 773 | bw_ext_csd[EXT_CSD_PARTITION_SUPPORT]) && |
Philip Rakity | f39b2dd9 | 2011-07-07 09:04:55 -0700 | [diff] [blame] | 774 | (card->ext_csd.raw_erased_mem_count == |
Philip Rakity | 08ee80c | 2011-05-24 18:14:58 -0700 | [diff] [blame] | 775 | bw_ext_csd[EXT_CSD_ERASED_MEM_CONT]) && |
Philip Rakity | f39b2dd9 | 2011-07-07 09:04:55 -0700 | [diff] [blame] | 776 | (card->ext_csd.rev == |
Philip Rakity | 08ee80c | 2011-05-24 18:14:58 -0700 | [diff] [blame] | 777 | bw_ext_csd[EXT_CSD_REV]) && |
Philip Rakity | f39b2dd9 | 2011-07-07 09:04:55 -0700 | [diff] [blame] | 778 | (card->ext_csd.raw_ext_csd_structure == |
Philip Rakity | 08ee80c | 2011-05-24 18:14:58 -0700 | [diff] [blame] | 779 | bw_ext_csd[EXT_CSD_STRUCTURE]) && |
Philip Rakity | f39b2dd9 | 2011-07-07 09:04:55 -0700 | [diff] [blame] | 780 | (card->ext_csd.raw_card_type == |
Philip Rakity | 08ee80c | 2011-05-24 18:14:58 -0700 | [diff] [blame] | 781 | bw_ext_csd[EXT_CSD_CARD_TYPE]) && |
Philip Rakity | f39b2dd9 | 2011-07-07 09:04:55 -0700 | [diff] [blame] | 782 | (card->ext_csd.raw_s_a_timeout == |
Philip Rakity | 08ee80c | 2011-05-24 18:14:58 -0700 | [diff] [blame] | 783 | bw_ext_csd[EXT_CSD_S_A_TIMEOUT]) && |
Philip Rakity | f39b2dd9 | 2011-07-07 09:04:55 -0700 | [diff] [blame] | 784 | (card->ext_csd.raw_hc_erase_gap_size == |
Philip Rakity | 08ee80c | 2011-05-24 18:14:58 -0700 | [diff] [blame] | 785 | bw_ext_csd[EXT_CSD_HC_WP_GRP_SIZE]) && |
Philip Rakity | f39b2dd9 | 2011-07-07 09:04:55 -0700 | [diff] [blame] | 786 | (card->ext_csd.raw_erase_timeout_mult == |
Philip Rakity | 08ee80c | 2011-05-24 18:14:58 -0700 | [diff] [blame] | 787 | bw_ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]) && |
Philip Rakity | f39b2dd9 | 2011-07-07 09:04:55 -0700 | [diff] [blame] | 788 | (card->ext_csd.raw_hc_erase_grp_size == |
Philip Rakity | 08ee80c | 2011-05-24 18:14:58 -0700 | [diff] [blame] | 789 | bw_ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]) && |
Philip Rakity | f39b2dd9 | 2011-07-07 09:04:55 -0700 | [diff] [blame] | 790 | (card->ext_csd.raw_sec_trim_mult == |
Philip Rakity | 08ee80c | 2011-05-24 18:14:58 -0700 | [diff] [blame] | 791 | bw_ext_csd[EXT_CSD_SEC_TRIM_MULT]) && |
Philip Rakity | f39b2dd9 | 2011-07-07 09:04:55 -0700 | [diff] [blame] | 792 | (card->ext_csd.raw_sec_erase_mult == |
Philip Rakity | 08ee80c | 2011-05-24 18:14:58 -0700 | [diff] [blame] | 793 | bw_ext_csd[EXT_CSD_SEC_ERASE_MULT]) && |
Philip Rakity | f39b2dd9 | 2011-07-07 09:04:55 -0700 | [diff] [blame] | 794 | (card->ext_csd.raw_sec_feature_support == |
Philip Rakity | 08ee80c | 2011-05-24 18:14:58 -0700 | [diff] [blame] | 795 | bw_ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]) && |
Philip Rakity | f39b2dd9 | 2011-07-07 09:04:55 -0700 | [diff] [blame] | 796 | (card->ext_csd.raw_trim_mult == |
Philip Rakity | 08ee80c | 2011-05-24 18:14:58 -0700 | [diff] [blame] | 797 | bw_ext_csd[EXT_CSD_TRIM_MULT]) && |
Philip Rakity | f39b2dd9 | 2011-07-07 09:04:55 -0700 | [diff] [blame] | 798 | (card->ext_csd.raw_sectors[0] == |
| 799 | bw_ext_csd[EXT_CSD_SEC_CNT + 0]) && |
| 800 | (card->ext_csd.raw_sectors[1] == |
| 801 | bw_ext_csd[EXT_CSD_SEC_CNT + 1]) && |
| 802 | (card->ext_csd.raw_sectors[2] == |
| 803 | bw_ext_csd[EXT_CSD_SEC_CNT + 2]) && |
| 804 | (card->ext_csd.raw_sectors[3] == |
Fredrik Soderstedt | 6044371 | 2013-04-23 16:27:07 +0200 | [diff] [blame] | 805 | bw_ext_csd[EXT_CSD_SEC_CNT + 3]) && |
| 806 | (card->ext_csd.raw_pwr_cl_52_195 == |
| 807 | bw_ext_csd[EXT_CSD_PWR_CL_52_195]) && |
| 808 | (card->ext_csd.raw_pwr_cl_26_195 == |
| 809 | bw_ext_csd[EXT_CSD_PWR_CL_26_195]) && |
| 810 | (card->ext_csd.raw_pwr_cl_52_360 == |
| 811 | bw_ext_csd[EXT_CSD_PWR_CL_52_360]) && |
| 812 | (card->ext_csd.raw_pwr_cl_26_360 == |
| 813 | bw_ext_csd[EXT_CSD_PWR_CL_26_360]) && |
| 814 | (card->ext_csd.raw_pwr_cl_200_195 == |
| 815 | bw_ext_csd[EXT_CSD_PWR_CL_200_195]) && |
| 816 | (card->ext_csd.raw_pwr_cl_200_360 == |
| 817 | bw_ext_csd[EXT_CSD_PWR_CL_200_360]) && |
| 818 | (card->ext_csd.raw_pwr_cl_ddr_52_195 == |
| 819 | bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_195]) && |
| 820 | (card->ext_csd.raw_pwr_cl_ddr_52_360 == |
Seungwon Jeon | 0a5b643 | 2014-04-23 17:14:58 +0900 | [diff] [blame] | 821 | bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_360]) && |
| 822 | (card->ext_csd.raw_pwr_cl_ddr_200_360 == |
| 823 | bw_ext_csd[EXT_CSD_PWR_CL_DDR_200_360])); |
| 824 | |
Philip Rakity | 08ee80c | 2011-05-24 18:14:58 -0700 | [diff] [blame] | 825 | if (err) |
| 826 | err = -EINVAL; |
| 827 | |
Ulf Hansson | 00b41b5 | 2014-10-16 16:18:51 +0200 | [diff] [blame] | 828 | kfree(bw_ext_csd); |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 829 | return err; |
| 830 | } |
| 831 | |
Pierre Ossman | 51ec92e | 2008-03-21 23:54:50 +0100 | [diff] [blame] | 832 | MMC_DEV_ATTR(cid, "%08x%08x%08x%08x\n", card->raw_cid[0], card->raw_cid[1], |
| 833 | card->raw_cid[2], card->raw_cid[3]); |
| 834 | MMC_DEV_ATTR(csd, "%08x%08x%08x%08x\n", card->raw_csd[0], card->raw_csd[1], |
| 835 | card->raw_csd[2], card->raw_csd[3]); |
| 836 | MMC_DEV_ATTR(date, "%02d/%04d\n", card->cid.month, card->cid.year); |
Adrian Hunter | dfe86cb | 2010-08-11 14:17:46 -0700 | [diff] [blame] | 837 | MMC_DEV_ATTR(erase_size, "%u\n", card->erase_size << 9); |
| 838 | MMC_DEV_ATTR(preferred_erase_size, "%u\n", card->pref_erase << 9); |
Gwendal Grignou | 0f76242 | 2014-10-16 11:27:16 -0700 | [diff] [blame] | 839 | MMC_DEV_ATTR(ffu_capable, "%d\n", card->ext_csd.ffu_capable); |
Pierre Ossman | 51ec92e | 2008-03-21 23:54:50 +0100 | [diff] [blame] | 840 | MMC_DEV_ATTR(hwrev, "0x%x\n", card->cid.hwrev); |
| 841 | MMC_DEV_ATTR(manfid, "0x%06x\n", card->cid.manfid); |
| 842 | MMC_DEV_ATTR(name, "%s\n", card->cid.prod_name); |
| 843 | MMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid); |
Bernie Thompson | 51e7e8b | 2013-02-27 12:19:17 -0800 | [diff] [blame] | 844 | MMC_DEV_ATTR(prv, "0x%x\n", card->cid.prv); |
Jin Qian | 6317222 | 2017-03-21 11:43:02 -0700 | [diff] [blame] | 845 | MMC_DEV_ATTR(rev, "0x%x\n", card->ext_csd.rev); |
Jungseung Lee | a02c754 | 2016-12-22 12:37:34 +0900 | [diff] [blame] | 846 | MMC_DEV_ATTR(pre_eol_info, "%02x\n", card->ext_csd.pre_eol_info); |
| 847 | MMC_DEV_ATTR(life_time, "0x%02x 0x%02x\n", |
| 848 | card->ext_csd.device_life_time_est_typ_a, |
| 849 | card->ext_csd.device_life_time_est_typ_b); |
Pierre Ossman | 51ec92e | 2008-03-21 23:54:50 +0100 | [diff] [blame] | 850 | MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial); |
Chuanxiao Dong | 709de99 | 2011-01-22 04:09:41 +0800 | [diff] [blame] | 851 | MMC_DEV_ATTR(enhanced_area_offset, "%llu\n", |
| 852 | card->ext_csd.enhanced_area_offset); |
| 853 | MMC_DEV_ATTR(enhanced_area_size, "%u\n", card->ext_csd.enhanced_area_size); |
Loic Pallardy | 188cc04 | 2012-08-06 17:12:29 +0200 | [diff] [blame] | 854 | MMC_DEV_ATTR(raw_rpmb_size_mult, "%#x\n", card->ext_csd.raw_rpmb_size_mult); |
Krishna Konda | 66827627 | 2015-06-29 19:34:35 -0700 | [diff] [blame] | 855 | MMC_DEV_ATTR(enhanced_rpmb_supported, "%#x\n", |
| 856 | card->ext_csd.enhanced_rpmb_supported); |
Loic Pallardy | 188cc04 | 2012-08-06 17:12:29 +0200 | [diff] [blame] | 857 | MMC_DEV_ATTR(rel_sectors, "%#x\n", card->ext_csd.rel_sectors); |
Bojan Prtvar | 5fb06af | 2016-07-04 13:56:55 +0200 | [diff] [blame] | 858 | MMC_DEV_ATTR(ocr, "%08x\n", card->ocr); |
Pierre Ossman | 51ec92e | 2008-03-21 23:54:50 +0100 | [diff] [blame] | 859 | |
Gwendal Grignou | 0f76242 | 2014-10-16 11:27:16 -0700 | [diff] [blame] | 860 | static ssize_t mmc_fwrev_show(struct device *dev, |
| 861 | struct device_attribute *attr, |
| 862 | char *buf) |
| 863 | { |
| 864 | struct mmc_card *card = mmc_dev_to_card(dev); |
| 865 | |
| 866 | if (card->ext_csd.rev < 7) { |
| 867 | return sprintf(buf, "0x%x\n", card->cid.fwrev); |
| 868 | } else { |
| 869 | return sprintf(buf, "0x%*phN\n", MMC_FIRMWARE_LEN, |
| 870 | card->ext_csd.fwrev); |
| 871 | } |
| 872 | } |
| 873 | |
| 874 | static DEVICE_ATTR(fwrev, S_IRUGO, mmc_fwrev_show, NULL); |
| 875 | |
Bojan Prtvar | 6825a60 | 2016-07-19 11:16:38 +0200 | [diff] [blame] | 876 | static ssize_t mmc_dsr_show(struct device *dev, |
| 877 | struct device_attribute *attr, |
| 878 | char *buf) |
| 879 | { |
| 880 | struct mmc_card *card = mmc_dev_to_card(dev); |
| 881 | struct mmc_host *host = card->host; |
| 882 | |
| 883 | if (card->csd.dsr_imp && host->dsr_req) |
| 884 | return sprintf(buf, "0x%x\n", host->dsr); |
| 885 | else |
| 886 | /* return default DSR value */ |
| 887 | return sprintf(buf, "0x%x\n", 0x404); |
| 888 | } |
| 889 | |
| 890 | static DEVICE_ATTR(dsr, S_IRUGO, mmc_dsr_show, NULL); |
| 891 | |
Pierre Ossman | 51ec92e | 2008-03-21 23:54:50 +0100 | [diff] [blame] | 892 | static struct attribute *mmc_std_attrs[] = { |
| 893 | &dev_attr_cid.attr, |
| 894 | &dev_attr_csd.attr, |
| 895 | &dev_attr_date.attr, |
Adrian Hunter | dfe86cb | 2010-08-11 14:17:46 -0700 | [diff] [blame] | 896 | &dev_attr_erase_size.attr, |
| 897 | &dev_attr_preferred_erase_size.attr, |
Pierre Ossman | 51ec92e | 2008-03-21 23:54:50 +0100 | [diff] [blame] | 898 | &dev_attr_fwrev.attr, |
Gwendal Grignou | 0f76242 | 2014-10-16 11:27:16 -0700 | [diff] [blame] | 899 | &dev_attr_ffu_capable.attr, |
Pierre Ossman | 51ec92e | 2008-03-21 23:54:50 +0100 | [diff] [blame] | 900 | &dev_attr_hwrev.attr, |
| 901 | &dev_attr_manfid.attr, |
| 902 | &dev_attr_name.attr, |
| 903 | &dev_attr_oemid.attr, |
Bernie Thompson | 51e7e8b | 2013-02-27 12:19:17 -0800 | [diff] [blame] | 904 | &dev_attr_prv.attr, |
Jin Qian | 6317222 | 2017-03-21 11:43:02 -0700 | [diff] [blame] | 905 | &dev_attr_rev.attr, |
Jungseung Lee | a02c754 | 2016-12-22 12:37:34 +0900 | [diff] [blame] | 906 | &dev_attr_pre_eol_info.attr, |
| 907 | &dev_attr_life_time.attr, |
Pierre Ossman | 51ec92e | 2008-03-21 23:54:50 +0100 | [diff] [blame] | 908 | &dev_attr_serial.attr, |
Chuanxiao Dong | 709de99 | 2011-01-22 04:09:41 +0800 | [diff] [blame] | 909 | &dev_attr_enhanced_area_offset.attr, |
| 910 | &dev_attr_enhanced_area_size.attr, |
Loic Pallardy | 188cc04 | 2012-08-06 17:12:29 +0200 | [diff] [blame] | 911 | &dev_attr_raw_rpmb_size_mult.attr, |
Krishna Konda | 66827627 | 2015-06-29 19:34:35 -0700 | [diff] [blame] | 912 | &dev_attr_enhanced_rpmb_supported.attr, |
Loic Pallardy | 188cc04 | 2012-08-06 17:12:29 +0200 | [diff] [blame] | 913 | &dev_attr_rel_sectors.attr, |
Bojan Prtvar | 5fb06af | 2016-07-04 13:56:55 +0200 | [diff] [blame] | 914 | &dev_attr_ocr.attr, |
Bojan Prtvar | 6825a60 | 2016-07-19 11:16:38 +0200 | [diff] [blame] | 915 | &dev_attr_dsr.attr, |
Pierre Ossman | 51ec92e | 2008-03-21 23:54:50 +0100 | [diff] [blame] | 916 | NULL, |
| 917 | }; |
Axel Lin | d1e5821 | 2014-03-08 15:05:27 +0800 | [diff] [blame] | 918 | ATTRIBUTE_GROUPS(mmc_std); |
Pierre Ossman | 51ec92e | 2008-03-21 23:54:50 +0100 | [diff] [blame] | 919 | |
| 920 | static struct device_type mmc_type = { |
Axel Lin | d1e5821 | 2014-03-08 15:05:27 +0800 | [diff] [blame] | 921 | .groups = mmc_std_groups, |
Pierre Ossman | 51ec92e | 2008-03-21 23:54:50 +0100 | [diff] [blame] | 922 | }; |
| 923 | |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 924 | /* |
Girish K S | b87d8db | 2011-09-23 20:41:47 +0530 | [diff] [blame] | 925 | * Select the PowerClass for the current bus width |
| 926 | * If power class is defined for 4/8 bit bus in the |
| 927 | * extended CSD register, select it by executing the |
| 928 | * mmc_switch command. |
| 929 | */ |
Seungwon Jeon | 2385049 | 2014-04-23 17:08:05 +0900 | [diff] [blame] | 930 | static int __mmc_select_powerclass(struct mmc_card *card, |
| 931 | unsigned int bus_width) |
Girish K S | b87d8db | 2011-09-23 20:41:47 +0530 | [diff] [blame] | 932 | { |
Seungwon Jeon | 2385049 | 2014-04-23 17:08:05 +0900 | [diff] [blame] | 933 | struct mmc_host *host = card->host; |
| 934 | struct mmc_ext_csd *ext_csd = &card->ext_csd; |
Fredrik Soderstedt | 6044371 | 2013-04-23 16:27:07 +0200 | [diff] [blame] | 935 | unsigned int pwrclass_val = 0; |
Seungwon Jeon | 2385049 | 2014-04-23 17:08:05 +0900 | [diff] [blame] | 936 | int err = 0; |
Girish K S | b87d8db | 2011-09-23 20:41:47 +0530 | [diff] [blame] | 937 | |
Girish K S | b87d8db | 2011-09-23 20:41:47 +0530 | [diff] [blame] | 938 | switch (1 << host->ios.vdd) { |
| 939 | case MMC_VDD_165_195: |
Seungwon Jeon | 2385049 | 2014-04-23 17:08:05 +0900 | [diff] [blame] | 940 | if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) |
| 941 | pwrclass_val = ext_csd->raw_pwr_cl_26_195; |
| 942 | else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR) |
Fredrik Soderstedt | 6044371 | 2013-04-23 16:27:07 +0200 | [diff] [blame] | 943 | pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? |
Seungwon Jeon | 2385049 | 2014-04-23 17:08:05 +0900 | [diff] [blame] | 944 | ext_csd->raw_pwr_cl_52_195 : |
| 945 | ext_csd->raw_pwr_cl_ddr_52_195; |
| 946 | else if (host->ios.clock <= MMC_HS200_MAX_DTR) |
| 947 | pwrclass_val = ext_csd->raw_pwr_cl_200_195; |
Girish K S | b87d8db | 2011-09-23 20:41:47 +0530 | [diff] [blame] | 948 | break; |
Subhash Jadavani | 93fc5a4 | 2012-04-03 12:25:58 +0530 | [diff] [blame] | 949 | case MMC_VDD_27_28: |
| 950 | case MMC_VDD_28_29: |
| 951 | case MMC_VDD_29_30: |
| 952 | case MMC_VDD_30_31: |
| 953 | case MMC_VDD_31_32: |
Girish K S | b87d8db | 2011-09-23 20:41:47 +0530 | [diff] [blame] | 954 | case MMC_VDD_32_33: |
| 955 | case MMC_VDD_33_34: |
| 956 | case MMC_VDD_34_35: |
| 957 | case MMC_VDD_35_36: |
Seungwon Jeon | 2385049 | 2014-04-23 17:08:05 +0900 | [diff] [blame] | 958 | if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) |
| 959 | pwrclass_val = ext_csd->raw_pwr_cl_26_360; |
| 960 | else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR) |
Fredrik Soderstedt | 6044371 | 2013-04-23 16:27:07 +0200 | [diff] [blame] | 961 | pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? |
Seungwon Jeon | 2385049 | 2014-04-23 17:08:05 +0900 | [diff] [blame] | 962 | ext_csd->raw_pwr_cl_52_360 : |
| 963 | ext_csd->raw_pwr_cl_ddr_52_360; |
| 964 | else if (host->ios.clock <= MMC_HS200_MAX_DTR) |
Seungwon Jeon | 0a5b643 | 2014-04-23 17:14:58 +0900 | [diff] [blame] | 965 | pwrclass_val = (bus_width == EXT_CSD_DDR_BUS_WIDTH_8) ? |
| 966 | ext_csd->raw_pwr_cl_ddr_200_360 : |
| 967 | ext_csd->raw_pwr_cl_200_360; |
Girish K S | b87d8db | 2011-09-23 20:41:47 +0530 | [diff] [blame] | 968 | break; |
| 969 | default: |
Joe Perches | 6606110 | 2014-09-12 14:56:56 -0700 | [diff] [blame] | 970 | pr_warn("%s: Voltage range not supported for power class\n", |
| 971 | mmc_hostname(host)); |
Girish K S | b87d8db | 2011-09-23 20:41:47 +0530 | [diff] [blame] | 972 | return -EINVAL; |
| 973 | } |
| 974 | |
Girish K S | b87d8db | 2011-09-23 20:41:47 +0530 | [diff] [blame] | 975 | if (bus_width & (EXT_CSD_BUS_WIDTH_8 | EXT_CSD_DDR_BUS_WIDTH_8)) |
| 976 | pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_8BIT_MASK) >> |
| 977 | EXT_CSD_PWR_CL_8BIT_SHIFT; |
| 978 | else |
| 979 | pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_4BIT_MASK) >> |
| 980 | EXT_CSD_PWR_CL_4BIT_SHIFT; |
| 981 | |
| 982 | /* If the power class is different from the default value */ |
| 983 | if (pwrclass_val > 0) { |
| 984 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
| 985 | EXT_CSD_POWER_CLASS, |
| 986 | pwrclass_val, |
Seungwon Jeon | 71fe3eb | 2011-10-18 13:20:57 +0900 | [diff] [blame] | 987 | card->ext_csd.generic_cmd6_time); |
Girish K S | b87d8db | 2011-09-23 20:41:47 +0530 | [diff] [blame] | 988 | } |
| 989 | |
| 990 | return err; |
| 991 | } |
| 992 | |
Seungwon Jeon | 2385049 | 2014-04-23 17:08:05 +0900 | [diff] [blame] | 993 | static int mmc_select_powerclass(struct mmc_card *card) |
| 994 | { |
| 995 | struct mmc_host *host = card->host; |
| 996 | u32 bus_width, ext_csd_bits; |
| 997 | int err, ddr; |
| 998 | |
| 999 | /* Power class selection is supported for versions >= 4.0 */ |
Ulf Hansson | 148bcab | 2014-10-20 11:33:53 +0200 | [diff] [blame] | 1000 | if (!mmc_can_ext_csd(card)) |
Seungwon Jeon | 2385049 | 2014-04-23 17:08:05 +0900 | [diff] [blame] | 1001 | return 0; |
| 1002 | |
| 1003 | bus_width = host->ios.bus_width; |
| 1004 | /* Power class values are defined only for 4/8 bit bus */ |
| 1005 | if (bus_width == MMC_BUS_WIDTH_1) |
| 1006 | return 0; |
| 1007 | |
| 1008 | ddr = card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52; |
| 1009 | if (ddr) |
| 1010 | ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? |
| 1011 | EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; |
| 1012 | else |
| 1013 | ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? |
| 1014 | EXT_CSD_BUS_WIDTH_8 : EXT_CSD_BUS_WIDTH_4; |
| 1015 | |
| 1016 | err = __mmc_select_powerclass(card, ext_csd_bits); |
| 1017 | if (err) |
| 1018 | pr_warn("%s: power class selection to bus width %d ddr %d failed\n", |
| 1019 | mmc_hostname(host), 1 << bus_width, ddr); |
| 1020 | |
| 1021 | return err; |
| 1022 | } |
| 1023 | |
Girish K S | b87d8db | 2011-09-23 20:41:47 +0530 | [diff] [blame] | 1024 | /* |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame] | 1025 | * Set the bus speed for the selected speed mode. |
Girish K S | a4924c7 | 2012-01-11 14:04:52 -0500 | [diff] [blame] | 1026 | */ |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame] | 1027 | static void mmc_set_bus_speed(struct mmc_card *card) |
Girish K S | a4924c7 | 2012-01-11 14:04:52 -0500 | [diff] [blame] | 1028 | { |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame] | 1029 | unsigned int max_dtr = (unsigned int)-1; |
| 1030 | |
Seungwon Jeon | 0a5b643 | 2014-04-23 17:14:58 +0900 | [diff] [blame] | 1031 | if ((mmc_card_hs200(card) || mmc_card_hs400(card)) && |
| 1032 | max_dtr > card->ext_csd.hs200_max_dtr) |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame] | 1033 | max_dtr = card->ext_csd.hs200_max_dtr; |
| 1034 | else if (mmc_card_hs(card) && max_dtr > card->ext_csd.hs_max_dtr) |
| 1035 | max_dtr = card->ext_csd.hs_max_dtr; |
| 1036 | else if (max_dtr > card->csd.max_dtr) |
| 1037 | max_dtr = card->csd.max_dtr; |
| 1038 | |
| 1039 | mmc_set_clock(card->host, max_dtr); |
| 1040 | } |
| 1041 | |
| 1042 | /* |
| 1043 | * Select the bus width amoung 4-bit and 8-bit(SDR). |
| 1044 | * If the bus width is changed successfully, return the selected width value. |
| 1045 | * Zero is returned instead of error value if the wide width is not supported. |
| 1046 | */ |
| 1047 | static int mmc_select_bus_width(struct mmc_card *card) |
| 1048 | { |
Venkat Gopalakrishnan | b93ed34 | 2015-01-09 17:26:27 -0800 | [diff] [blame] | 1049 | static const unsigned ext_csd_bits[] = { |
Girish K S | a4924c7 | 2012-01-11 14:04:52 -0500 | [diff] [blame] | 1050 | EXT_CSD_BUS_WIDTH_8, |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame] | 1051 | EXT_CSD_BUS_WIDTH_4, |
Girish K S | a4924c7 | 2012-01-11 14:04:52 -0500 | [diff] [blame] | 1052 | }; |
Venkat Gopalakrishnan | b93ed34 | 2015-01-09 17:26:27 -0800 | [diff] [blame] | 1053 | static const unsigned bus_widths[] = { |
Girish K S | a4924c7 | 2012-01-11 14:04:52 -0500 | [diff] [blame] | 1054 | MMC_BUS_WIDTH_8, |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame] | 1055 | MMC_BUS_WIDTH_4, |
Girish K S | a4924c7 | 2012-01-11 14:04:52 -0500 | [diff] [blame] | 1056 | }; |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame] | 1057 | struct mmc_host *host = card->host; |
| 1058 | unsigned idx, bus_width = 0; |
| 1059 | int err = 0; |
Girish K S | a4924c7 | 2012-01-11 14:04:52 -0500 | [diff] [blame] | 1060 | |
Alexandre Belloni | 1c2d26e | 2014-12-17 19:32:06 +0100 | [diff] [blame] | 1061 | if (!mmc_can_ext_csd(card) || |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame] | 1062 | !(host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) |
| 1063 | return 0; |
Girish K S | a4924c7 | 2012-01-11 14:04:52 -0500 | [diff] [blame] | 1064 | |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame] | 1065 | idx = (host->caps & MMC_CAP_8_BIT_DATA) ? 0 : 1; |
Girish K S | a4924c7 | 2012-01-11 14:04:52 -0500 | [diff] [blame] | 1066 | |
| 1067 | /* |
| 1068 | * Unlike SD, MMC cards dont have a configuration register to notify |
| 1069 | * supported bus width. So bus test command should be run to identify |
| 1070 | * the supported bus width or compare the ext csd values of current |
| 1071 | * bus width and ext csd values of 1 bit mode read earlier. |
| 1072 | */ |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame] | 1073 | for (; idx < ARRAY_SIZE(bus_widths); idx++) { |
Girish K S | a4924c7 | 2012-01-11 14:04:52 -0500 | [diff] [blame] | 1074 | /* |
| 1075 | * Host is capable of 8bit transfer, then switch |
| 1076 | * the device to work in 8bit transfer mode. If the |
| 1077 | * mmc switch command returns error then switch to |
| 1078 | * 4bit transfer mode. On success set the corresponding |
| 1079 | * bus width on the host. |
| 1080 | */ |
| 1081 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
| 1082 | EXT_CSD_BUS_WIDTH, |
| 1083 | ext_csd_bits[idx], |
| 1084 | card->ext_csd.generic_cmd6_time); |
| 1085 | if (err) |
| 1086 | continue; |
| 1087 | |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame] | 1088 | bus_width = bus_widths[idx]; |
| 1089 | mmc_set_bus_width(host, bus_width); |
Girish K S | a4924c7 | 2012-01-11 14:04:52 -0500 | [diff] [blame] | 1090 | |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame] | 1091 | /* |
| 1092 | * If controller can't handle bus width test, |
| 1093 | * compare ext_csd previously read in 1 bit mode |
| 1094 | * against ext_csd at new bus width |
| 1095 | */ |
Girish K S | a4924c7 | 2012-01-11 14:04:52 -0500 | [diff] [blame] | 1096 | if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST)) |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame] | 1097 | err = mmc_compare_ext_csds(card, bus_width); |
Girish K S | a4924c7 | 2012-01-11 14:04:52 -0500 | [diff] [blame] | 1098 | else |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame] | 1099 | err = mmc_bus_test(card, bus_width); |
| 1100 | |
| 1101 | if (!err) { |
| 1102 | err = bus_width; |
Girish K S | a4924c7 | 2012-01-11 14:04:52 -0500 | [diff] [blame] | 1103 | break; |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame] | 1104 | } else { |
| 1105 | pr_warn("%s: switch to bus width %d failed\n", |
Wolfram Sang | ed9feec | 2016-01-29 09:27:50 +0100 | [diff] [blame] | 1106 | mmc_hostname(host), 1 << bus_width); |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame] | 1107 | } |
Girish K S | a4924c7 | 2012-01-11 14:04:52 -0500 | [diff] [blame] | 1108 | } |
| 1109 | |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame] | 1110 | return err; |
| 1111 | } |
| 1112 | |
Chaotian Jing | 08573ea | 2016-05-19 16:47:41 +0800 | [diff] [blame] | 1113 | /* Caller must hold re-tuning */ |
Ritesh Harjani | a0b42c0 | 2016-12-01 10:12:22 +0530 | [diff] [blame] | 1114 | static int mmc_switch_status(struct mmc_card *card, bool ignore_crc) |
Chaotian Jing | 08573ea | 2016-05-19 16:47:41 +0800 | [diff] [blame] | 1115 | { |
| 1116 | u32 status; |
| 1117 | int err; |
| 1118 | |
Ritesh Harjani | a0b42c0 | 2016-12-01 10:12:22 +0530 | [diff] [blame] | 1119 | err = __mmc_send_status(card, &status, ignore_crc); |
Chaotian Jing | 08573ea | 2016-05-19 16:47:41 +0800 | [diff] [blame] | 1120 | if (err) |
| 1121 | return err; |
| 1122 | |
| 1123 | return mmc_switch_status_error(card->host, status); |
| 1124 | } |
| 1125 | |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame] | 1126 | /* |
| 1127 | * Switch to the high-speed mode |
| 1128 | */ |
| 1129 | static int mmc_select_hs(struct mmc_card *card) |
| 1130 | { |
| 1131 | int err; |
| 1132 | |
| 1133 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
| 1134 | EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS, |
| 1135 | card->ext_csd.generic_cmd6_time, |
Chaotian Jing | 08573ea | 2016-05-19 16:47:41 +0800 | [diff] [blame] | 1136 | true, false, true); |
| 1137 | if (!err) { |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame] | 1138 | mmc_set_timing(card->host, MMC_TIMING_MMC_HS); |
Ritesh Harjani | a0b42c0 | 2016-12-01 10:12:22 +0530 | [diff] [blame] | 1139 | err = mmc_switch_status(card, false); |
Chaotian Jing | 08573ea | 2016-05-19 16:47:41 +0800 | [diff] [blame] | 1140 | } |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame] | 1141 | |
Jungseung Lee | 67d3596 | 2016-08-24 19:34:09 +0900 | [diff] [blame] | 1142 | if (err) |
| 1143 | pr_warn("%s: switch to high-speed failed, err:%d\n", |
| 1144 | mmc_hostname(card->host), err); |
| 1145 | |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame] | 1146 | return err; |
| 1147 | } |
| 1148 | |
| 1149 | /* |
| 1150 | * Activate wide bus and DDR if supported. |
| 1151 | */ |
| 1152 | static int mmc_select_hs_ddr(struct mmc_card *card) |
| 1153 | { |
| 1154 | struct mmc_host *host = card->host; |
| 1155 | u32 bus_width, ext_csd_bits; |
| 1156 | int err = 0; |
| 1157 | |
| 1158 | if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52)) |
| 1159 | return 0; |
| 1160 | |
| 1161 | bus_width = host->ios.bus_width; |
| 1162 | if (bus_width == MMC_BUS_WIDTH_1) |
| 1163 | return 0; |
| 1164 | |
| 1165 | ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? |
| 1166 | EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; |
| 1167 | |
Ritesh Harjani | a0b42c0 | 2016-12-01 10:12:22 +0530 | [diff] [blame] | 1168 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame] | 1169 | EXT_CSD_BUS_WIDTH, |
| 1170 | ext_csd_bits, |
Ritesh Harjani | a0b42c0 | 2016-12-01 10:12:22 +0530 | [diff] [blame] | 1171 | card->ext_csd.generic_cmd6_time, |
| 1172 | true, false, false); |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame] | 1173 | if (err) { |
Andrew Gabbasov | 4b75bff | 2014-10-01 07:14:11 -0500 | [diff] [blame] | 1174 | pr_err("%s: switch to bus width %d ddr failed\n", |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame] | 1175 | mmc_hostname(host), 1 << bus_width); |
| 1176 | return err; |
| 1177 | } |
| 1178 | |
| 1179 | /* |
| 1180 | * eMMC cards can support 3.3V to 1.2V i/o (vccq) |
| 1181 | * signaling. |
| 1182 | * |
| 1183 | * EXT_CSD_CARD_TYPE_DDR_1_8V means 3.3V or 1.8V vccq. |
| 1184 | * |
| 1185 | * 1.8V vccq at 3.3V core voltage (vcc) is not required |
| 1186 | * in the JEDEC spec for DDR. |
| 1187 | * |
Chuanxiao.Dong | 312449e | 2014-08-15 11:28:07 +0800 | [diff] [blame] | 1188 | * Even (e)MMC card can support 3.3v to 1.2v vccq, but not all |
| 1189 | * host controller can support this, like some of the SDHCI |
| 1190 | * controller which connect to an eMMC device. Some of these |
| 1191 | * host controller still needs to use 1.8v vccq for supporting |
| 1192 | * DDR mode. |
| 1193 | * |
| 1194 | * So the sequence will be: |
| 1195 | * if (host and device can both support 1.2v IO) |
| 1196 | * use 1.2v IO; |
| 1197 | * else if (host and device can both support 1.8v IO) |
| 1198 | * use 1.8v IO; |
| 1199 | * so if host and device can only support 3.3v IO, this is the |
| 1200 | * last choice. |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame] | 1201 | * |
| 1202 | * WARNING: eMMC rules are NOT the same as SD DDR |
| 1203 | */ |
Chuanxiao.Dong | 312449e | 2014-08-15 11:28:07 +0800 | [diff] [blame] | 1204 | err = -EINVAL; |
| 1205 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_2V) |
| 1206 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame] | 1207 | |
Chuanxiao.Dong | 312449e | 2014-08-15 11:28:07 +0800 | [diff] [blame] | 1208 | if (err && (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_8V)) |
| 1209 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); |
| 1210 | |
| 1211 | /* make sure vccq is 3.3v after switching disaster */ |
| 1212 | if (err) |
| 1213 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330); |
| 1214 | |
Ritesh Harjani | a0b42c0 | 2016-12-01 10:12:22 +0530 | [diff] [blame] | 1215 | if (!err) { |
Chuanxiao.Dong | 312449e | 2014-08-15 11:28:07 +0800 | [diff] [blame] | 1216 | mmc_set_timing(host, MMC_TIMING_MMC_DDR52); |
Ritesh Harjani | a0b42c0 | 2016-12-01 10:12:22 +0530 | [diff] [blame] | 1217 | err = mmc_switch_status(card, false); |
| 1218 | } |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame] | 1219 | |
| 1220 | return err; |
| 1221 | } |
| 1222 | |
Seungwon Jeon | 0a5b643 | 2014-04-23 17:14:58 +0900 | [diff] [blame] | 1223 | static int mmc_select_hs400(struct mmc_card *card) |
| 1224 | { |
| 1225 | struct mmc_host *host = card->host; |
Adrian Hunter | 51b12f7 | 2015-10-28 14:25:41 +0200 | [diff] [blame] | 1226 | unsigned int max_dtr; |
Seungwon Jeon | 0a5b643 | 2014-04-23 17:14:58 +0900 | [diff] [blame] | 1227 | int err = 0; |
Adrian Hunter | cc4f414 | 2015-02-06 14:12:58 +0200 | [diff] [blame] | 1228 | u8 val; |
Seungwon Jeon | 0a5b643 | 2014-04-23 17:14:58 +0900 | [diff] [blame] | 1229 | |
| 1230 | /* |
| 1231 | * HS400 mode requires 8-bit bus width |
| 1232 | */ |
Yi Sun | 041a381 | 2015-06-10 16:40:06 -0700 | [diff] [blame] | 1233 | if (card->ext_csd.strobe_support) { |
| 1234 | if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 && |
| 1235 | host->caps & MMC_CAP_8_BIT_DATA)) |
| 1236 | return 0; |
| 1237 | |
| 1238 | /* For Enhance Strobe flow. For non Enhance Strobe, signal |
| 1239 | * voltage will not be set. |
| 1240 | */ |
| 1241 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_2V) |
| 1242 | err = __mmc_set_signal_voltage(host, |
| 1243 | MMC_SIGNAL_VOLTAGE_120); |
| 1244 | |
| 1245 | if (err && card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_8V) |
| 1246 | err = __mmc_set_signal_voltage(host, |
| 1247 | MMC_SIGNAL_VOLTAGE_180); |
| 1248 | if (err) |
| 1249 | return err; |
| 1250 | } else { |
| 1251 | if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 && |
| 1252 | host->ios.bus_width == MMC_BUS_WIDTH_8)) |
| 1253 | return 0; |
| 1254 | } |
Seungwon Jeon | 0a5b643 | 2014-04-23 17:14:58 +0900 | [diff] [blame] | 1255 | |
Adrian Hunter | 51b12f7 | 2015-10-28 14:25:41 +0200 | [diff] [blame] | 1256 | /* Switch card to HS mode */ |
Wenkai Du | adb24d4 | 2015-11-26 14:00:44 +0200 | [diff] [blame] | 1257 | val = EXT_CSD_TIMING_HS; |
Seungwon Jeon | 0a5b643 | 2014-04-23 17:14:58 +0900 | [diff] [blame] | 1258 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
Adrian Hunter | cc4f414 | 2015-02-06 14:12:58 +0200 | [diff] [blame] | 1259 | EXT_CSD_HS_TIMING, val, |
Seungwon Jeon | 0a5b643 | 2014-04-23 17:14:58 +0900 | [diff] [blame] | 1260 | card->ext_csd.generic_cmd6_time, |
Chaotian Jing | 08573ea | 2016-05-19 16:47:41 +0800 | [diff] [blame] | 1261 | true, false, true); |
Seungwon Jeon | 0a5b643 | 2014-04-23 17:14:58 +0900 | [diff] [blame] | 1262 | if (err) { |
Andrew Gabbasov | 4b75bff | 2014-10-01 07:14:11 -0500 | [diff] [blame] | 1263 | pr_err("%s: switch to high-speed from hs200 failed, err:%d\n", |
Seungwon Jeon | 0a5b643 | 2014-04-23 17:14:58 +0900 | [diff] [blame] | 1264 | mmc_hostname(host), err); |
| 1265 | return err; |
| 1266 | } |
| 1267 | |
Adrian Hunter | 51b12f7 | 2015-10-28 14:25:41 +0200 | [diff] [blame] | 1268 | /* Set host controller to HS timing */ |
| 1269 | mmc_set_timing(card->host, MMC_TIMING_MMC_HS); |
| 1270 | |
Ziyuan Xu | 649c605 | 2016-05-26 13:50:32 +0800 | [diff] [blame] | 1271 | /* Reduce frequency to HS frequency */ |
| 1272 | max_dtr = card->ext_csd.hs_max_dtr; |
| 1273 | mmc_set_clock(host, max_dtr); |
| 1274 | |
Ritesh Harjani | a0b42c0 | 2016-12-01 10:12:22 +0530 | [diff] [blame] | 1275 | err = mmc_switch_status(card, false); |
Chaotian Jing | 08573ea | 2016-05-19 16:47:41 +0800 | [diff] [blame] | 1276 | if (err) |
| 1277 | goto out_err; |
Adrian Hunter | d230293 | 2015-10-28 14:25:43 +0200 | [diff] [blame] | 1278 | |
Yi Sun | 041a381 | 2015-06-10 16:40:06 -0700 | [diff] [blame] | 1279 | val = EXT_CSD_DDR_BUS_WIDTH_8; |
Venkat Gopalakrishnan | ffca577 | 2015-06-11 18:27:27 -0700 | [diff] [blame] | 1280 | if (card->ext_csd.strobe_support) { |
| 1281 | err = mmc_select_bus_width(card); |
| 1282 | if (IS_ERR_VALUE((unsigned long)err)) |
| 1283 | return err; |
Yi Sun | 041a381 | 2015-06-10 16:40:06 -0700 | [diff] [blame] | 1284 | val |= EXT_CSD_BUS_WIDTH_STROBE; |
Venkat Gopalakrishnan | ffca577 | 2015-06-11 18:27:27 -0700 | [diff] [blame] | 1285 | } |
Yi Sun | 041a381 | 2015-06-10 16:40:06 -0700 | [diff] [blame] | 1286 | |
Adrian Hunter | d230293 | 2015-10-28 14:25:43 +0200 | [diff] [blame] | 1287 | /* Switch card to DDR */ |
Seungwon Jeon | 0a5b643 | 2014-04-23 17:14:58 +0900 | [diff] [blame] | 1288 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
| 1289 | EXT_CSD_BUS_WIDTH, |
Yi Sun | 041a381 | 2015-06-10 16:40:06 -0700 | [diff] [blame] | 1290 | val, |
Seungwon Jeon | 0a5b643 | 2014-04-23 17:14:58 +0900 | [diff] [blame] | 1291 | card->ext_csd.generic_cmd6_time); |
| 1292 | if (err) { |
Andrew Gabbasov | 4b75bff | 2014-10-01 07:14:11 -0500 | [diff] [blame] | 1293 | pr_err("%s: switch to bus width for hs400 failed, err:%d\n", |
Seungwon Jeon | 0a5b643 | 2014-04-23 17:14:58 +0900 | [diff] [blame] | 1294 | mmc_hostname(host), err); |
| 1295 | return err; |
| 1296 | } |
| 1297 | |
Adrian Hunter | d230293 | 2015-10-28 14:25:43 +0200 | [diff] [blame] | 1298 | /* Switch card to HS400 */ |
Adrian Hunter | cc4f414 | 2015-02-06 14:12:58 +0200 | [diff] [blame] | 1299 | val = EXT_CSD_TIMING_HS400 | |
| 1300 | card->drive_strength << EXT_CSD_DRV_STR_SHIFT; |
Seungwon Jeon | 0a5b643 | 2014-04-23 17:14:58 +0900 | [diff] [blame] | 1301 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
Adrian Hunter | cc4f414 | 2015-02-06 14:12:58 +0200 | [diff] [blame] | 1302 | EXT_CSD_HS_TIMING, val, |
Seungwon Jeon | 0a5b643 | 2014-04-23 17:14:58 +0900 | [diff] [blame] | 1303 | card->ext_csd.generic_cmd6_time, |
Chaotian Jing | 08573ea | 2016-05-19 16:47:41 +0800 | [diff] [blame] | 1304 | true, false, true); |
Seungwon Jeon | 0a5b643 | 2014-04-23 17:14:58 +0900 | [diff] [blame] | 1305 | if (err) { |
Andrew Gabbasov | 4b75bff | 2014-10-01 07:14:11 -0500 | [diff] [blame] | 1306 | pr_err("%s: switch to hs400 failed, err:%d\n", |
Seungwon Jeon | 0a5b643 | 2014-04-23 17:14:58 +0900 | [diff] [blame] | 1307 | mmc_hostname(host), err); |
| 1308 | return err; |
| 1309 | } |
| 1310 | |
Adrian Hunter | d230293 | 2015-10-28 14:25:43 +0200 | [diff] [blame] | 1311 | /* Set host controller to HS400 timing and frequency */ |
Seungwon Jeon | 0a5b643 | 2014-04-23 17:14:58 +0900 | [diff] [blame] | 1312 | mmc_set_timing(host, MMC_TIMING_MMC_HS400); |
| 1313 | mmc_set_bus_speed(card); |
| 1314 | |
Ritesh Harjani | 06b9b78 | 2015-08-25 11:30:48 +0530 | [diff] [blame] | 1315 | if (card->ext_csd.strobe_support && host->ops->enhanced_strobe) { |
Venkat Gopalakrishnan | f3acb6b | 2015-06-10 17:20:00 -0700 | [diff] [blame] | 1316 | mmc_host_clk_hold(host); |
| 1317 | err = host->ops->enhanced_strobe(host); |
| 1318 | mmc_host_clk_release(host); |
| 1319 | } else if ((host->caps2 & MMC_CAP2_HS400_POST_TUNING) && |
| 1320 | host->ops->execute_tuning) { |
Venkat Gopalakrishnan | f6c9845 | 2015-01-09 15:11:57 -0800 | [diff] [blame] | 1321 | mmc_host_clk_hold(host); |
| 1322 | err = host->ops->execute_tuning(host, |
| 1323 | MMC_SEND_TUNING_BLOCK_HS200); |
| 1324 | mmc_host_clk_release(host); |
| 1325 | |
| 1326 | if (err) |
| 1327 | pr_warn("%s: tuning execution failed\n", |
| 1328 | mmc_hostname(host)); |
| 1329 | } |
| 1330 | |
Ritesh Harjani | a0b42c0 | 2016-12-01 10:12:22 +0530 | [diff] [blame] | 1331 | /* |
| 1332 | * Sending of CMD13 should be done after the host calibration |
| 1333 | * for enhanced_strobe or HS400 mode is completed. |
| 1334 | * Otherwise may see CMD13 timeouts or CRC errors. |
| 1335 | */ |
| 1336 | err = mmc_switch_status(card, false); |
Chaotian Jing | 08573ea | 2016-05-19 16:47:41 +0800 | [diff] [blame] | 1337 | if (err) |
| 1338 | goto out_err; |
Adrian Hunter | d230293 | 2015-10-28 14:25:43 +0200 | [diff] [blame] | 1339 | |
Seungwon Jeon | 0a5b643 | 2014-04-23 17:14:58 +0900 | [diff] [blame] | 1340 | return 0; |
Adrian Hunter | d230293 | 2015-10-28 14:25:43 +0200 | [diff] [blame] | 1341 | |
| 1342 | out_err: |
| 1343 | pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), |
| 1344 | __func__, err); |
| 1345 | return err; |
Seungwon Jeon | 0a5b643 | 2014-04-23 17:14:58 +0900 | [diff] [blame] | 1346 | } |
| 1347 | |
Adrian Hunter | 6376f69 | 2015-05-07 13:10:20 +0300 | [diff] [blame] | 1348 | int mmc_hs200_to_hs400(struct mmc_card *card) |
| 1349 | { |
| 1350 | return mmc_select_hs400(card); |
| 1351 | } |
| 1352 | |
Adrian Hunter | 6376f69 | 2015-05-07 13:10:20 +0300 | [diff] [blame] | 1353 | int mmc_hs400_to_hs200(struct mmc_card *card) |
| 1354 | { |
| 1355 | struct mmc_host *host = card->host; |
Adrian Hunter | 6376f69 | 2015-05-07 13:10:20 +0300 | [diff] [blame] | 1356 | unsigned int max_dtr; |
| 1357 | int err; |
Adrian Hunter | cc4f414 | 2015-02-06 14:12:58 +0200 | [diff] [blame] | 1358 | u8 val; |
Adrian Hunter | 6376f69 | 2015-05-07 13:10:20 +0300 | [diff] [blame] | 1359 | |
Adrian Hunter | 6376f69 | 2015-05-07 13:10:20 +0300 | [diff] [blame] | 1360 | /* Switch HS400 to HS DDR */ |
Wenkai Du | adb24d4 | 2015-11-26 14:00:44 +0200 | [diff] [blame] | 1361 | val = EXT_CSD_TIMING_HS; |
Adrian Hunter | 6376f69 | 2015-05-07 13:10:20 +0300 | [diff] [blame] | 1362 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, |
Adrian Hunter | cc4f414 | 2015-02-06 14:12:58 +0200 | [diff] [blame] | 1363 | val, card->ext_csd.generic_cmd6_time, |
Chaotian Jing | 08573ea | 2016-05-19 16:47:41 +0800 | [diff] [blame] | 1364 | true, false, true); |
Adrian Hunter | 6376f69 | 2015-05-07 13:10:20 +0300 | [diff] [blame] | 1365 | if (err) |
| 1366 | goto out_err; |
| 1367 | |
| 1368 | mmc_set_timing(host, MMC_TIMING_MMC_DDR52); |
| 1369 | |
Sayali Lokhande | e73fdff | 2017-07-05 11:21:28 +0530 | [diff] [blame] | 1370 | /* Reduce frequency to HS */ |
| 1371 | max_dtr = card->ext_csd.hs_max_dtr; |
| 1372 | mmc_set_clock(host, max_dtr); |
| 1373 | |
Ritesh Harjani | a0b42c0 | 2016-12-01 10:12:22 +0530 | [diff] [blame] | 1374 | err = mmc_switch_status(card, false); |
Chaotian Jing | 08573ea | 2016-05-19 16:47:41 +0800 | [diff] [blame] | 1375 | if (err) |
| 1376 | goto out_err; |
Adrian Hunter | 6376f69 | 2015-05-07 13:10:20 +0300 | [diff] [blame] | 1377 | |
| 1378 | /* Switch HS DDR to HS */ |
| 1379 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BUS_WIDTH, |
| 1380 | EXT_CSD_BUS_WIDTH_8, card->ext_csd.generic_cmd6_time, |
Chaotian Jing | 08573ea | 2016-05-19 16:47:41 +0800 | [diff] [blame] | 1381 | true, false, true); |
Adrian Hunter | 6376f69 | 2015-05-07 13:10:20 +0300 | [diff] [blame] | 1382 | if (err) |
| 1383 | goto out_err; |
| 1384 | |
| 1385 | mmc_set_timing(host, MMC_TIMING_MMC_HS); |
| 1386 | |
Ritesh Harjani | a0b42c0 | 2016-12-01 10:12:22 +0530 | [diff] [blame] | 1387 | err = mmc_switch_status(card, false); |
Chaotian Jing | 08573ea | 2016-05-19 16:47:41 +0800 | [diff] [blame] | 1388 | if (err) |
| 1389 | goto out_err; |
Adrian Hunter | 6376f69 | 2015-05-07 13:10:20 +0300 | [diff] [blame] | 1390 | |
| 1391 | /* Switch HS to HS200 */ |
Adrian Hunter | cc4f414 | 2015-02-06 14:12:58 +0200 | [diff] [blame] | 1392 | val = EXT_CSD_TIMING_HS200 | |
| 1393 | card->drive_strength << EXT_CSD_DRV_STR_SHIFT; |
Adrian Hunter | 6376f69 | 2015-05-07 13:10:20 +0300 | [diff] [blame] | 1394 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, |
Chaotian Jing | 08573ea | 2016-05-19 16:47:41 +0800 | [diff] [blame] | 1395 | val, card->ext_csd.generic_cmd6_time, |
| 1396 | true, false, true); |
Adrian Hunter | 6376f69 | 2015-05-07 13:10:20 +0300 | [diff] [blame] | 1397 | if (err) |
| 1398 | goto out_err; |
| 1399 | |
| 1400 | mmc_set_timing(host, MMC_TIMING_MMC_HS200); |
| 1401 | |
Ritesh Harjani | a0b42c0 | 2016-12-01 10:12:22 +0530 | [diff] [blame] | 1402 | err = mmc_switch_status(card, false); |
Chaotian Jing | 08573ea | 2016-05-19 16:47:41 +0800 | [diff] [blame] | 1403 | if (err) |
| 1404 | goto out_err; |
Adrian Hunter | 6376f69 | 2015-05-07 13:10:20 +0300 | [diff] [blame] | 1405 | |
| 1406 | mmc_set_bus_speed(card); |
| 1407 | |
| 1408 | return 0; |
| 1409 | |
| 1410 | out_err: |
| 1411 | pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), |
| 1412 | __func__, err); |
| 1413 | return err; |
| 1414 | } |
| 1415 | |
Shawn Lin | 81ac2af | 2016-05-26 09:56:22 +0800 | [diff] [blame] | 1416 | static int mmc_select_hs400es(struct mmc_card *card) |
| 1417 | { |
| 1418 | struct mmc_host *host = card->host; |
Haibo Chen | 0a205d8 | 2017-08-08 18:54:01 +0800 | [diff] [blame] | 1419 | int err = -EINVAL; |
Shawn Lin | 81ac2af | 2016-05-26 09:56:22 +0800 | [diff] [blame] | 1420 | u8 val; |
| 1421 | |
| 1422 | if (!(host->caps & MMC_CAP_8_BIT_DATA)) { |
| 1423 | err = -ENOTSUPP; |
| 1424 | goto out_err; |
| 1425 | } |
| 1426 | |
Shawn Lin | 1720d35 | 2016-09-30 14:18:58 +0800 | [diff] [blame] | 1427 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400_1_2V) |
| 1428 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); |
| 1429 | |
| 1430 | if (err && card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400_1_8V) |
| 1431 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); |
| 1432 | |
| 1433 | /* If fails try again during next card power cycle */ |
| 1434 | if (err) |
| 1435 | goto out_err; |
| 1436 | |
Shawn Lin | 81ac2af | 2016-05-26 09:56:22 +0800 | [diff] [blame] | 1437 | err = mmc_select_bus_width(card); |
| 1438 | if (err < 0) |
| 1439 | goto out_err; |
| 1440 | |
| 1441 | /* Switch card to HS mode */ |
| 1442 | err = mmc_select_hs(card); |
Jungseung Lee | 67d3596 | 2016-08-24 19:34:09 +0900 | [diff] [blame] | 1443 | if (err) |
Shawn Lin | 81ac2af | 2016-05-26 09:56:22 +0800 | [diff] [blame] | 1444 | goto out_err; |
Shawn Lin | 81ac2af | 2016-05-26 09:56:22 +0800 | [diff] [blame] | 1445 | |
Shawn Lin | 4f25580 | 2016-09-30 14:18:59 +0800 | [diff] [blame] | 1446 | mmc_set_clock(host, card->ext_csd.hs_max_dtr); |
| 1447 | |
Ritesh Harjani | a0b42c0 | 2016-12-01 10:12:22 +0530 | [diff] [blame] | 1448 | err = mmc_switch_status(card, false); |
Shawn Lin | 81ac2af | 2016-05-26 09:56:22 +0800 | [diff] [blame] | 1449 | if (err) |
| 1450 | goto out_err; |
| 1451 | |
| 1452 | /* Switch card to DDR with strobe bit */ |
| 1453 | val = EXT_CSD_DDR_BUS_WIDTH_8 | EXT_CSD_BUS_WIDTH_STROBE; |
| 1454 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
| 1455 | EXT_CSD_BUS_WIDTH, |
| 1456 | val, |
| 1457 | card->ext_csd.generic_cmd6_time); |
| 1458 | if (err) { |
| 1459 | pr_err("%s: switch to bus width for hs400es failed, err:%d\n", |
| 1460 | mmc_hostname(host), err); |
| 1461 | goto out_err; |
| 1462 | } |
| 1463 | |
| 1464 | /* Switch card to HS400 */ |
| 1465 | val = EXT_CSD_TIMING_HS400 | |
| 1466 | card->drive_strength << EXT_CSD_DRV_STR_SHIFT; |
| 1467 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
| 1468 | EXT_CSD_HS_TIMING, val, |
| 1469 | card->ext_csd.generic_cmd6_time, |
| 1470 | true, false, true); |
| 1471 | if (err) { |
| 1472 | pr_err("%s: switch to hs400es failed, err:%d\n", |
| 1473 | mmc_hostname(host), err); |
| 1474 | goto out_err; |
| 1475 | } |
| 1476 | |
| 1477 | /* Set host controller to HS400 timing and frequency */ |
| 1478 | mmc_set_timing(host, MMC_TIMING_MMC_HS400); |
| 1479 | |
| 1480 | /* Controller enable enhanced strobe function */ |
| 1481 | host->ios.enhanced_strobe = true; |
| 1482 | if (host->ops->hs400_enhanced_strobe) |
| 1483 | host->ops->hs400_enhanced_strobe(host, &host->ios); |
| 1484 | |
Ritesh Harjani | a0b42c0 | 2016-12-01 10:12:22 +0530 | [diff] [blame] | 1485 | err = mmc_switch_status(card, false); |
Shawn Lin | 81ac2af | 2016-05-26 09:56:22 +0800 | [diff] [blame] | 1486 | if (err) |
| 1487 | goto out_err; |
| 1488 | |
| 1489 | return 0; |
| 1490 | |
| 1491 | out_err: |
| 1492 | pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), |
| 1493 | __func__, err); |
| 1494 | return err; |
| 1495 | } |
| 1496 | |
Adrian Hunter | cc4f414 | 2015-02-06 14:12:58 +0200 | [diff] [blame] | 1497 | static void mmc_select_driver_type(struct mmc_card *card) |
| 1498 | { |
| 1499 | int card_drv_type, drive_strength, drv_type; |
| 1500 | |
| 1501 | card_drv_type = card->ext_csd.raw_driver_strength | |
| 1502 | mmc_driver_type_mask(0); |
| 1503 | |
| 1504 | drive_strength = mmc_select_drive_strength(card, |
| 1505 | card->ext_csd.hs200_max_dtr, |
| 1506 | card_drv_type, &drv_type); |
| 1507 | |
| 1508 | card->drive_strength = drive_strength; |
| 1509 | |
| 1510 | if (drv_type) |
| 1511 | mmc_set_driver_type(card->host, drv_type); |
| 1512 | } |
| 1513 | |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame] | 1514 | /* |
| 1515 | * For device supporting HS200 mode, the following sequence |
| 1516 | * should be done before executing the tuning process. |
| 1517 | * 1. set the desired bus width(4-bit or 8-bit, 1-bit is not supported) |
| 1518 | * 2. switch to HS200 mode |
| 1519 | * 3. set the clock to > 52Mhz and <=200MHz |
| 1520 | */ |
| 1521 | static int mmc_select_hs200(struct mmc_card *card) |
| 1522 | { |
| 1523 | struct mmc_host *host = card->host; |
Dong Aisheng | e51534c | 2016-04-21 00:51:30 +0800 | [diff] [blame] | 1524 | unsigned int old_timing, old_signal_voltage; |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame] | 1525 | int err = -EINVAL; |
Adrian Hunter | cc4f414 | 2015-02-06 14:12:58 +0200 | [diff] [blame] | 1526 | u8 val; |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame] | 1527 | |
Dong Aisheng | e51534c | 2016-04-21 00:51:30 +0800 | [diff] [blame] | 1528 | old_signal_voltage = host->ios.signal_voltage; |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame] | 1529 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_2V) |
| 1530 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); |
| 1531 | |
| 1532 | if (err && card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_8V) |
| 1533 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); |
| 1534 | |
| 1535 | /* If fails try again during next card power cycle */ |
| 1536 | if (err) |
Dong Aisheng | e51534c | 2016-04-21 00:51:30 +0800 | [diff] [blame] | 1537 | return err; |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame] | 1538 | |
Adrian Hunter | cc4f414 | 2015-02-06 14:12:58 +0200 | [diff] [blame] | 1539 | mmc_select_driver_type(card); |
| 1540 | |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame] | 1541 | /* |
| 1542 | * Set the bus width(4 or 8) with host's support and |
| 1543 | * switch to HS200 mode if bus width is set successfully. |
| 1544 | */ |
| 1545 | err = mmc_select_bus_width(card); |
Peter Griffin | 8b7be8f | 2016-06-08 11:27:52 +0100 | [diff] [blame] | 1546 | if (err > 0) { |
Adrian Hunter | cc4f414 | 2015-02-06 14:12:58 +0200 | [diff] [blame] | 1547 | val = EXT_CSD_TIMING_HS200 | |
| 1548 | card->drive_strength << EXT_CSD_DRV_STR_SHIFT; |
Ulf Hansson | 4509f8477 | 2014-01-08 16:09:33 +0100 | [diff] [blame] | 1549 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
Adrian Hunter | cc4f414 | 2015-02-06 14:12:58 +0200 | [diff] [blame] | 1550 | EXT_CSD_HS_TIMING, val, |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame] | 1551 | card->ext_csd.generic_cmd6_time, |
Chaotian Jing | 08573ea | 2016-05-19 16:47:41 +0800 | [diff] [blame] | 1552 | true, false, true); |
Adrian Hunter | 1815e61 | 2015-10-28 14:25:40 +0200 | [diff] [blame] | 1553 | if (err) |
| 1554 | goto err; |
| 1555 | old_timing = host->ios.timing; |
| 1556 | mmc_set_timing(host, MMC_TIMING_MMC_HS200); |
Chaotian Jing | 08573ea | 2016-05-19 16:47:41 +0800 | [diff] [blame] | 1557 | |
Ritesh Harjani | a0b42c0 | 2016-12-01 10:12:22 +0530 | [diff] [blame] | 1558 | /* |
| 1559 | * Since after switching to hs200, crc errors might |
| 1560 | * occur for commands send before tuning. |
| 1561 | * So ignore crc error for cmd13. |
| 1562 | */ |
| 1563 | err = mmc_switch_status(card, true); |
Chaotian Jing | 08573ea | 2016-05-19 16:47:41 +0800 | [diff] [blame] | 1564 | /* |
| 1565 | * mmc_select_timing() assumes timing has not changed if |
| 1566 | * it is a switch error. |
| 1567 | */ |
| 1568 | if (err == -EBADMSG) |
| 1569 | mmc_set_timing(host, old_timing); |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame] | 1570 | } |
Girish K S | a4924c7 | 2012-01-11 14:04:52 -0500 | [diff] [blame] | 1571 | err: |
Dong Aisheng | e51534c | 2016-04-21 00:51:30 +0800 | [diff] [blame] | 1572 | if (err) { |
| 1573 | /* fall back to the old signal voltage, if fails report error */ |
| 1574 | if (__mmc_set_signal_voltage(host, old_signal_voltage)) |
| 1575 | err = -EIO; |
| 1576 | |
Adrian Hunter | 1815e61 | 2015-10-28 14:25:40 +0200 | [diff] [blame] | 1577 | pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), |
| 1578 | __func__, err); |
Dong Aisheng | e51534c | 2016-04-21 00:51:30 +0800 | [diff] [blame] | 1579 | } |
Girish K S | a4924c7 | 2012-01-11 14:04:52 -0500 | [diff] [blame] | 1580 | return err; |
| 1581 | } |
| 1582 | |
Tatyana Brokhman | 4fbb0bf | 2014-12-04 22:03:42 +0200 | [diff] [blame] | 1583 | static int mmc_reboot_notify(struct notifier_block *notify_block, |
| 1584 | unsigned long event, void *unused) |
| 1585 | { |
| 1586 | struct mmc_card *card = container_of( |
| 1587 | notify_block, struct mmc_card, reboot_notify); |
| 1588 | |
Krishna Konda | a7ea2dc | 2015-06-29 19:20:05 -0700 | [diff] [blame] | 1589 | card->pon_type = (event != SYS_RESTART) ? MMC_LONG_PON : MMC_SHRT_PON; |
Tatyana Brokhman | 4fbb0bf | 2014-12-04 22:03:42 +0200 | [diff] [blame] | 1590 | |
| 1591 | return NOTIFY_OK; |
| 1592 | } |
| 1593 | |
Girish K S | a4924c7 | 2012-01-11 14:04:52 -0500 | [diff] [blame] | 1594 | /* |
Shawn Lin | 81ac2af | 2016-05-26 09:56:22 +0800 | [diff] [blame] | 1595 | * Activate High Speed, HS200 or HS400ES mode if supported. |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame] | 1596 | */ |
| 1597 | static int mmc_select_timing(struct mmc_card *card) |
| 1598 | { |
| 1599 | int err = 0; |
| 1600 | |
Ulf Hansson | 148bcab | 2014-10-20 11:33:53 +0200 | [diff] [blame] | 1601 | if (!mmc_can_ext_csd(card)) |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame] | 1602 | goto bus_speed; |
| 1603 | |
Yi Sun | 041a381 | 2015-06-10 16:40:06 -0700 | [diff] [blame] | 1604 | /* For Enhance Strobe HS400 flow */ |
| 1605 | if (card->ext_csd.strobe_support && |
| 1606 | card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 && |
| 1607 | card->host->caps & MMC_CAP_8_BIT_DATA) |
Shawn Lin | 81ac2af | 2016-05-26 09:56:22 +0800 | [diff] [blame] | 1608 | err = mmc_select_hs400es(card); |
| 1609 | else if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200) |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame] | 1610 | err = mmc_select_hs200(card); |
| 1611 | else if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS) |
| 1612 | err = mmc_select_hs(card); |
| 1613 | |
| 1614 | if (err && err != -EBADMSG) |
| 1615 | return err; |
| 1616 | |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame] | 1617 | bus_speed: |
| 1618 | /* |
| 1619 | * Set the bus speed to the selected bus timing. |
| 1620 | * If timing is not selected, backward compatible is the default. |
| 1621 | */ |
| 1622 | mmc_set_bus_speed(card); |
Dong Aisheng | 0400ed0 | 2016-04-21 00:51:31 +0800 | [diff] [blame] | 1623 | return 0; |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame] | 1624 | } |
| 1625 | |
| 1626 | /* |
| 1627 | * Execute tuning sequence to seek the proper bus operating |
Seungwon Jeon | 0a5b643 | 2014-04-23 17:14:58 +0900 | [diff] [blame] | 1628 | * conditions for HS200 and HS400, which sends CMD21 to the device. |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame] | 1629 | */ |
| 1630 | static int mmc_hs200_tuning(struct mmc_card *card) |
| 1631 | { |
| 1632 | struct mmc_host *host = card->host; |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame] | 1633 | |
Seungwon Jeon | 0a5b643 | 2014-04-23 17:14:58 +0900 | [diff] [blame] | 1634 | /* |
| 1635 | * Timing should be adjusted to the HS400 target |
| 1636 | * operation frequency for tuning process |
| 1637 | */ |
| 1638 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 && |
| 1639 | host->ios.bus_width == MMC_BUS_WIDTH_8) |
Venkat Gopalakrishnan | e73eb3f | 2015-01-09 15:09:11 -0800 | [diff] [blame] | 1640 | mmc_set_timing(host, MMC_TIMING_MMC_HS400); |
Seungwon Jeon | 0a5b643 | 2014-04-23 17:14:58 +0900 | [diff] [blame] | 1641 | |
Adrian Hunter | 63e415c | 2014-12-05 19:40:59 +0200 | [diff] [blame] | 1642 | return mmc_execute_tuning(card); |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame] | 1643 | } |
| 1644 | |
Asutosh Das | 4f45892 | 2015-05-21 13:43:24 +0530 | [diff] [blame] | 1645 | static int mmc_select_cmdq(struct mmc_card *card) |
| 1646 | { |
| 1647 | struct mmc_host *host = card->host; |
| 1648 | int ret = 0; |
| 1649 | |
| 1650 | if (!host->cmdq_ops) { |
| 1651 | pr_err("%s: host controller doesn't support CMDQ\n", |
| 1652 | mmc_hostname(host)); |
| 1653 | return 0; |
| 1654 | } |
| 1655 | |
| 1656 | ret = mmc_set_blocklen(card, MMC_CARD_CMDQ_BLK_SIZE); |
| 1657 | if (ret) |
| 1658 | goto out; |
| 1659 | |
| 1660 | ret = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_CMDQ, 1, |
| 1661 | card->ext_csd.generic_cmd6_time); |
| 1662 | if (ret) |
| 1663 | goto out; |
| 1664 | |
| 1665 | mmc_card_set_cmdq(card); |
Talel Shenhar | f89b118 | 2015-06-23 13:15:54 +0300 | [diff] [blame] | 1666 | mmc_host_clk_hold(card->host); |
Asutosh Das | 4f45892 | 2015-05-21 13:43:24 +0530 | [diff] [blame] | 1667 | ret = host->cmdq_ops->enable(card->host); |
| 1668 | if (ret) { |
Talel Shenhar | f89b118 | 2015-06-23 13:15:54 +0300 | [diff] [blame] | 1669 | mmc_host_clk_release(card->host); |
Asutosh Das | 4f45892 | 2015-05-21 13:43:24 +0530 | [diff] [blame] | 1670 | pr_err("%s: failed (%d) enabling CMDQ on host\n", |
| 1671 | mmc_hostname(host), ret); |
| 1672 | mmc_card_clr_cmdq(card); |
| 1673 | ret = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_CMDQ, 0, |
| 1674 | card->ext_csd.generic_cmd6_time); |
Subhash Jadavani | e88f5e2 | 2015-10-20 18:01:53 -0700 | [diff] [blame] | 1675 | goto out; |
Asutosh Das | 4f45892 | 2015-05-21 13:43:24 +0530 | [diff] [blame] | 1676 | } |
| 1677 | |
Talel Shenhar | f89b118 | 2015-06-23 13:15:54 +0300 | [diff] [blame] | 1678 | mmc_host_clk_release(card->host); |
Maya Erez | be076d4 | 2015-09-29 17:34:03 +0300 | [diff] [blame] | 1679 | pr_info_once("%s: CMDQ enabled on card\n", mmc_hostname(host)); |
Asutosh Das | 4f45892 | 2015-05-21 13:43:24 +0530 | [diff] [blame] | 1680 | out: |
| 1681 | return ret; |
| 1682 | } |
| 1683 | |
Asutosh Das | 0fcc35f | 2015-12-09 10:48:18 +0530 | [diff] [blame] | 1684 | static int mmc_select_hs_ddr52(struct mmc_host *host) |
| 1685 | { |
| 1686 | int err; |
| 1687 | |
| 1688 | mmc_select_hs(host->card); |
Asutosh Das | 0fcc35f | 2015-12-09 10:48:18 +0530 | [diff] [blame] | 1689 | err = mmc_select_bus_width(host->card); |
| 1690 | if (err < 0) { |
| 1691 | pr_err("%s: %s: select_bus_width failed(%d)\n", |
| 1692 | mmc_hostname(host), __func__, err); |
| 1693 | return err; |
| 1694 | } |
| 1695 | |
| 1696 | err = mmc_select_hs_ddr(host->card); |
Asutosh Das | c364cee | 2016-02-25 17:30:38 +0530 | [diff] [blame] | 1697 | mmc_set_clock(host, MMC_HIGH_52_MAX_DTR); |
Asutosh Das | 0fcc35f | 2015-12-09 10:48:18 +0530 | [diff] [blame] | 1698 | |
| 1699 | return err; |
| 1700 | } |
| 1701 | |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame] | 1702 | /* |
Talel Shenhar | a52f84e | 2015-05-27 14:20:34 +0300 | [diff] [blame] | 1703 | * Scale down from HS400 to HS in order to allow frequency change. |
| 1704 | * This is needed for cards that doesn't support changing frequency in HS400 |
| 1705 | */ |
| 1706 | static int mmc_scale_low(struct mmc_host *host, unsigned long freq) |
| 1707 | { |
| 1708 | int err = 0; |
| 1709 | |
| 1710 | mmc_set_timing(host, MMC_TIMING_LEGACY); |
| 1711 | mmc_set_clock(host, MMC_HIGH_26_MAX_DTR); |
| 1712 | |
Asutosh Das | 0fcc35f | 2015-12-09 10:48:18 +0530 | [diff] [blame] | 1713 | if (host->clk_scaling.lower_bus_speed_mode & |
| 1714 | MMC_SCALING_LOWER_DDR52_MODE) { |
| 1715 | err = mmc_select_hs_ddr52(host); |
| 1716 | if (err) |
| 1717 | pr_err("%s: %s: failed to switch to DDR52: err: %d\n", |
| 1718 | mmc_hostname(host), __func__, err); |
| 1719 | else |
| 1720 | return err; |
| 1721 | } |
| 1722 | |
Talel Shenhar | a52f84e | 2015-05-27 14:20:34 +0300 | [diff] [blame] | 1723 | err = mmc_select_hs(host->card); |
| 1724 | if (err) { |
Asutosh Das | 0fcc35f | 2015-12-09 10:48:18 +0530 | [diff] [blame] | 1725 | pr_err("%s: %s: scaling low: failed (%d)\n", |
| 1726 | mmc_hostname(host), __func__, err); |
Talel Shenhar | a52f84e | 2015-05-27 14:20:34 +0300 | [diff] [blame] | 1727 | return err; |
| 1728 | } |
| 1729 | |
| 1730 | err = mmc_select_bus_width(host->card); |
| 1731 | if (err < 0) { |
| 1732 | pr_err("%s: %s: select_bus_width failed(%d)\n", |
| 1733 | mmc_hostname(host), __func__, err); |
| 1734 | return err; |
| 1735 | } |
| 1736 | |
| 1737 | mmc_set_clock(host, freq); |
| 1738 | |
| 1739 | return 0; |
| 1740 | } |
| 1741 | |
| 1742 | /* |
| 1743 | * Scale UP from HS to HS200/H400 |
| 1744 | */ |
| 1745 | static int mmc_scale_high(struct mmc_host *host) |
| 1746 | { |
| 1747 | int err = 0; |
| 1748 | |
Asutosh Das | c364cee | 2016-02-25 17:30:38 +0530 | [diff] [blame] | 1749 | if (mmc_card_ddr52(host->card)) { |
| 1750 | mmc_set_timing(host, MMC_TIMING_LEGACY); |
| 1751 | mmc_set_clock(host, MMC_HIGH_26_MAX_DTR); |
| 1752 | } |
| 1753 | |
Venkat Gopalakrishnan | df07bec | 2015-06-15 10:12:53 -0700 | [diff] [blame] | 1754 | if (!host->card->ext_csd.strobe_support) { |
| 1755 | if (!(host->card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200)) { |
| 1756 | pr_err("%s: %s: card does not support HS200\n", |
| 1757 | mmc_hostname(host), __func__); |
| 1758 | WARN_ON(1); |
| 1759 | return -EPERM; |
| 1760 | } |
Talel Shenhar | a52f84e | 2015-05-27 14:20:34 +0300 | [diff] [blame] | 1761 | |
Venkat Gopalakrishnan | df07bec | 2015-06-15 10:12:53 -0700 | [diff] [blame] | 1762 | err = mmc_select_hs200(host->card); |
| 1763 | if (err) { |
| 1764 | pr_err("%s: %s: selecting HS200 failed (%d)\n", |
| 1765 | mmc_hostname(host), __func__, err); |
| 1766 | return err; |
| 1767 | } |
Talel Shenhar | a52f84e | 2015-05-27 14:20:34 +0300 | [diff] [blame] | 1768 | |
Venkat Gopalakrishnan | df07bec | 2015-06-15 10:12:53 -0700 | [diff] [blame] | 1769 | mmc_set_bus_speed(host->card); |
Talel Shenhar | a52f84e | 2015-05-27 14:20:34 +0300 | [diff] [blame] | 1770 | |
Venkat Gopalakrishnan | df07bec | 2015-06-15 10:12:53 -0700 | [diff] [blame] | 1771 | err = mmc_hs200_tuning(host->card); |
| 1772 | if (err) { |
| 1773 | pr_err("%s: %s: hs200 tuning failed (%d)\n", |
| 1774 | mmc_hostname(host), __func__, err); |
| 1775 | return err; |
| 1776 | } |
Talel Shenhar | a52f84e | 2015-05-27 14:20:34 +0300 | [diff] [blame] | 1777 | |
Venkat Gopalakrishnan | df07bec | 2015-06-15 10:12:53 -0700 | [diff] [blame] | 1778 | if (!(host->card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400)) { |
| 1779 | pr_debug("%s: card does not support HS400\n", |
| 1780 | mmc_hostname(host)); |
| 1781 | return 0; |
| 1782 | } |
Talel Shenhar | a52f84e | 2015-05-27 14:20:34 +0300 | [diff] [blame] | 1783 | } |
| 1784 | |
| 1785 | err = mmc_select_hs400(host->card); |
| 1786 | if (err) { |
| 1787 | pr_err("%s: %s: select hs400 failed (%d)\n", |
| 1788 | mmc_hostname(host), __func__, err); |
| 1789 | return err; |
| 1790 | } |
| 1791 | |
Venkat Gopalakrishnan | f3acb6b | 2015-06-10 17:20:00 -0700 | [diff] [blame] | 1792 | return err; |
Talel Shenhar | a52f84e | 2015-05-27 14:20:34 +0300 | [diff] [blame] | 1793 | } |
| 1794 | |
| 1795 | static int mmc_set_clock_bus_speed(struct mmc_card *card, unsigned long freq) |
| 1796 | { |
| 1797 | int err = 0; |
| 1798 | |
| 1799 | if (freq == MMC_HS200_MAX_DTR) |
| 1800 | err = mmc_scale_high(card->host); |
| 1801 | else |
| 1802 | err = mmc_scale_low(card->host, freq); |
| 1803 | |
| 1804 | return err; |
| 1805 | } |
| 1806 | |
| 1807 | static inline unsigned long mmc_ddr_freq_accommodation(unsigned long freq) |
| 1808 | { |
| 1809 | if (freq == MMC_HIGH_DDR_MAX_DTR) |
| 1810 | return freq; |
| 1811 | |
| 1812 | return freq/2; |
| 1813 | } |
| 1814 | |
| 1815 | /** |
| 1816 | * mmc_change_bus_speed() - Change MMC card bus frequency at runtime |
| 1817 | * @host: pointer to mmc host structure |
| 1818 | * @freq: pointer to desired frequency to be set |
| 1819 | * |
| 1820 | * Change the MMC card bus frequency at runtime after the card is |
| 1821 | * initialized. Callers are expected to make sure of the card's |
| 1822 | * state (DATA/RCV/TRANSFER) before changing the frequency at runtime. |
| 1823 | * |
| 1824 | * If the frequency to change is greater than max. supported by card, |
| 1825 | * *freq is changed to max. supported by card. If it is less than min. |
| 1826 | * supported by host, *freq is changed to min. supported by host. |
| 1827 | * Host is assumed to be calimed while calling this funciton. |
| 1828 | */ |
| 1829 | static int mmc_change_bus_speed(struct mmc_host *host, unsigned long *freq) |
| 1830 | { |
| 1831 | int err = 0; |
| 1832 | struct mmc_card *card; |
| 1833 | unsigned long actual_freq; |
| 1834 | |
| 1835 | card = host->card; |
| 1836 | |
| 1837 | if (!card || !freq) { |
| 1838 | err = -EINVAL; |
| 1839 | goto out; |
| 1840 | } |
| 1841 | actual_freq = *freq; |
| 1842 | |
| 1843 | WARN_ON(!host->claimed); |
| 1844 | |
| 1845 | /* |
| 1846 | * For scaling up/down HS400 we'll need special handling, |
| 1847 | * for other timings we can simply do clock frequency change |
| 1848 | */ |
| 1849 | if (mmc_card_hs400(card) || |
Sahitya Tummala | edac91a | 2016-04-21 16:04:09 +0530 | [diff] [blame] | 1850 | (!mmc_card_hs200(host->card) && *freq == MMC_HS200_MAX_DTR)) { |
Talel Shenhar | a52f84e | 2015-05-27 14:20:34 +0300 | [diff] [blame] | 1851 | err = mmc_set_clock_bus_speed(card, *freq); |
| 1852 | if (err) { |
| 1853 | pr_err("%s: %s: failed (%d)to set bus and clock speed (freq=%lu)\n", |
| 1854 | mmc_hostname(host), __func__, err, *freq); |
| 1855 | goto out; |
| 1856 | } |
| 1857 | } else if (mmc_card_hs200(host->card)) { |
| 1858 | mmc_set_clock(host, *freq); |
| 1859 | err = mmc_hs200_tuning(host->card); |
| 1860 | if (err) { |
| 1861 | pr_warn("%s: %s: tuning execution failed %d\n", |
| 1862 | mmc_hostname(card->host), |
| 1863 | __func__, err); |
| 1864 | mmc_set_clock(host, host->clk_scaling.curr_freq); |
| 1865 | } |
| 1866 | } else { |
| 1867 | if (mmc_card_ddr52(host->card)) |
| 1868 | actual_freq = mmc_ddr_freq_accommodation(*freq); |
| 1869 | mmc_set_clock(host, actual_freq); |
| 1870 | } |
| 1871 | |
| 1872 | out: |
| 1873 | return err; |
| 1874 | } |
| 1875 | |
| 1876 | /* |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1877 | * Handle the detection and initialisation of a card. |
| 1878 | * |
Deepak Saxena | 8769392 | 2008-06-16 19:20:57 -0700 | [diff] [blame] | 1879 | * In the case of a resume, "oldcard" will contain the card |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1880 | * we're trying to reinitialise. |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1881 | */ |
Pierre Ossman | 8c75dea | 2007-05-19 16:14:43 +0200 | [diff] [blame] | 1882 | static int mmc_init_card(struct mmc_host *host, u32 ocr, |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1883 | struct mmc_card *oldcard) |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1884 | { |
| 1885 | struct mmc_card *card; |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame] | 1886 | int err; |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1887 | u32 cid[4]; |
Philip Rakity | b676f03 | 2011-02-13 23:13:09 -0800 | [diff] [blame] | 1888 | u32 rocr; |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1889 | |
| 1890 | BUG_ON(!host); |
Pierre Ossman | d84075c8 | 2007-08-09 13:23:56 +0200 | [diff] [blame] | 1891 | WARN_ON(!host->claimed); |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1892 | |
Stefan Nilsson XK | 4466903 | 2011-09-15 17:50:38 +0200 | [diff] [blame] | 1893 | /* Set correct bus mode for MMC before attempting init */ |
| 1894 | if (!mmc_host_is_spi(host)) |
| 1895 | mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); |
| 1896 | |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1897 | /* |
| 1898 | * Since we're changing the OCR value, we seem to |
| 1899 | * need to tell some cards to go back to the idle |
| 1900 | * state. We wait 1ms to give cards time to |
| 1901 | * respond. |
Balaji T K | c380546 | 2011-09-08 22:08:39 +0530 | [diff] [blame] | 1902 | * mmc_go_idle is needed for eMMC that are asleep |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1903 | */ |
Asutosh Das | 4f45892 | 2015-05-21 13:43:24 +0530 | [diff] [blame] | 1904 | reinit: |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1905 | mmc_go_idle(host); |
| 1906 | |
| 1907 | /* The extra bit indicates that we support high capacity */ |
Philip Rakity | b676f03 | 2011-02-13 23:13:09 -0800 | [diff] [blame] | 1908 | err = mmc_send_op_cond(host, ocr | (1 << 30), &rocr); |
Sahitya Tummala | ace0684 | 2014-12-09 23:23:25 +0200 | [diff] [blame] | 1909 | if (err) { |
| 1910 | pr_err("%s: %s: mmc_send_op_cond() fails %d\n", |
| 1911 | mmc_hostname(host), __func__, err); |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1912 | goto err; |
Sahitya Tummala | ace0684 | 2014-12-09 23:23:25 +0200 | [diff] [blame] | 1913 | } |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1914 | |
| 1915 | /* |
David Brownell | af51715 | 2007-08-08 09:11:32 -0700 | [diff] [blame] | 1916 | * For SPI, enable CRC as appropriate. |
| 1917 | */ |
| 1918 | if (mmc_host_is_spi(host)) { |
| 1919 | err = mmc_spi_set_crc(host, use_spi_crc); |
Sahitya Tummala | ace0684 | 2014-12-09 23:23:25 +0200 | [diff] [blame] | 1920 | if (err) { |
| 1921 | pr_err("%s: %s: mmc_spi_set_crc() fails %d\n", |
| 1922 | mmc_hostname(host), __func__, err); |
David Brownell | af51715 | 2007-08-08 09:11:32 -0700 | [diff] [blame] | 1923 | goto err; |
Sahitya Tummala | ace0684 | 2014-12-09 23:23:25 +0200 | [diff] [blame] | 1924 | } |
David Brownell | af51715 | 2007-08-08 09:11:32 -0700 | [diff] [blame] | 1925 | } |
| 1926 | |
| 1927 | /* |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1928 | * Fetch CID from card. |
| 1929 | */ |
David Brownell | af51715 | 2007-08-08 09:11:32 -0700 | [diff] [blame] | 1930 | if (mmc_host_is_spi(host)) |
| 1931 | err = mmc_send_cid(host, cid); |
| 1932 | else |
| 1933 | err = mmc_all_send_cid(host, cid); |
Sahitya Tummala | ace0684 | 2014-12-09 23:23:25 +0200 | [diff] [blame] | 1934 | if (err) { |
| 1935 | pr_err("%s: %s: mmc_send_cid() fails %d\n", |
| 1936 | mmc_hostname(host), __func__, err); |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1937 | goto err; |
Sahitya Tummala | ace0684 | 2014-12-09 23:23:25 +0200 | [diff] [blame] | 1938 | } |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1939 | |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1940 | if (oldcard) { |
Pierre Ossman | adf66a0 | 2007-07-22 23:08:30 +0200 | [diff] [blame] | 1941 | if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) { |
| 1942 | err = -ENOENT; |
Sahitya Tummala | ace0684 | 2014-12-09 23:23:25 +0200 | [diff] [blame] | 1943 | pr_err("%s: %s: CID memcmp failed %d\n", |
| 1944 | mmc_hostname(host), __func__, err); |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1945 | goto err; |
Pierre Ossman | adf66a0 | 2007-07-22 23:08:30 +0200 | [diff] [blame] | 1946 | } |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1947 | |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1948 | card = oldcard; |
| 1949 | } else { |
| 1950 | /* |
| 1951 | * Allocate card structure. |
| 1952 | */ |
Pierre Ossman | 51ec92e | 2008-03-21 23:54:50 +0100 | [diff] [blame] | 1953 | card = mmc_alloc_card(host, &mmc_type); |
Pierre Ossman | adf66a0 | 2007-07-22 23:08:30 +0200 | [diff] [blame] | 1954 | if (IS_ERR(card)) { |
| 1955 | err = PTR_ERR(card); |
Sahitya Tummala | ace0684 | 2014-12-09 23:23:25 +0200 | [diff] [blame] | 1956 | pr_err("%s: %s: no memory to allocate for card %d\n", |
| 1957 | mmc_hostname(host), __func__, err); |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1958 | goto err; |
Pierre Ossman | adf66a0 | 2007-07-22 23:08:30 +0200 | [diff] [blame] | 1959 | } |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1960 | |
Ulf Hansson | 6904115 | 2013-09-13 11:31:33 +0200 | [diff] [blame] | 1961 | card->ocr = ocr; |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1962 | card->type = MMC_TYPE_MMC; |
| 1963 | card->rca = 1; |
| 1964 | memcpy(card->raw_cid, cid, sizeof(card->raw_cid)); |
Krishna Konda | 96e6b11 | 2013-10-28 15:25:03 -0700 | [diff] [blame] | 1965 | host->card = card; |
Tatyana Brokhman | 4fbb0bf | 2014-12-04 22:03:42 +0200 | [diff] [blame] | 1966 | card->reboot_notify.notifier_call = mmc_reboot_notify; |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1967 | } |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1968 | |
| 1969 | /* |
Doug Anderson | eac8632 | 2014-12-02 15:42:45 -0800 | [diff] [blame] | 1970 | * Call the optional HC's init_card function to handle quirks. |
| 1971 | */ |
| 1972 | if (host->ops->init_card) |
| 1973 | host->ops->init_card(host, card); |
| 1974 | |
| 1975 | /* |
David Brownell | af51715 | 2007-08-08 09:11:32 -0700 | [diff] [blame] | 1976 | * For native busses: set card RCA and quit open drain mode. |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1977 | */ |
David Brownell | af51715 | 2007-08-08 09:11:32 -0700 | [diff] [blame] | 1978 | if (!mmc_host_is_spi(host)) { |
| 1979 | err = mmc_set_relative_addr(card); |
Sahitya Tummala | ace0684 | 2014-12-09 23:23:25 +0200 | [diff] [blame] | 1980 | if (err) { |
| 1981 | pr_err("%s: %s: mmc_set_relative_addr() fails %d\n", |
| 1982 | mmc_hostname(host), __func__, err); |
David Brownell | af51715 | 2007-08-08 09:11:32 -0700 | [diff] [blame] | 1983 | goto free_card; |
Sahitya Tummala | ace0684 | 2014-12-09 23:23:25 +0200 | [diff] [blame] | 1984 | } |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1985 | |
David Brownell | af51715 | 2007-08-08 09:11:32 -0700 | [diff] [blame] | 1986 | mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL); |
| 1987 | } |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1988 | |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1989 | if (!oldcard) { |
| 1990 | /* |
| 1991 | * Fetch CSD from card. |
| 1992 | */ |
| 1993 | err = mmc_send_csd(card, card->raw_csd); |
Sahitya Tummala | ace0684 | 2014-12-09 23:23:25 +0200 | [diff] [blame] | 1994 | if (err) { |
| 1995 | pr_err("%s: %s: mmc_send_csd() fails %d\n", |
| 1996 | mmc_hostname(host), __func__, err); |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1997 | goto free_card; |
Sahitya Tummala | ace0684 | 2014-12-09 23:23:25 +0200 | [diff] [blame] | 1998 | } |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1999 | |
Pierre Ossman | bd76631 | 2007-05-01 16:11:57 +0200 | [diff] [blame] | 2000 | err = mmc_decode_csd(card); |
Sahitya Tummala | ace0684 | 2014-12-09 23:23:25 +0200 | [diff] [blame] | 2001 | if (err) { |
| 2002 | pr_err("%s: %s: mmc_decode_csd() fails %d\n", |
| 2003 | mmc_hostname(host), __func__, err); |
Pierre Ossman | bd76631 | 2007-05-01 16:11:57 +0200 | [diff] [blame] | 2004 | goto free_card; |
Sahitya Tummala | ace0684 | 2014-12-09 23:23:25 +0200 | [diff] [blame] | 2005 | } |
Pierre Ossman | bd76631 | 2007-05-01 16:11:57 +0200 | [diff] [blame] | 2006 | err = mmc_decode_cid(card); |
Sahitya Tummala | ace0684 | 2014-12-09 23:23:25 +0200 | [diff] [blame] | 2007 | if (err) { |
| 2008 | pr_err("%s: %s: mmc_decode_cid() fails %d\n", |
| 2009 | mmc_hostname(host), __func__, err); |
Pierre Ossman | bd76631 | 2007-05-01 16:11:57 +0200 | [diff] [blame] | 2010 | goto free_card; |
Sahitya Tummala | ace0684 | 2014-12-09 23:23:25 +0200 | [diff] [blame] | 2011 | } |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 2012 | } |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 2013 | |
| 2014 | /* |
Sascha Hauer | 3d705d1 | 2014-08-19 10:45:51 +0200 | [diff] [blame] | 2015 | * handling only for cards supporting DSR and hosts requesting |
| 2016 | * DSR configuration |
| 2017 | */ |
| 2018 | if (card->csd.dsr_imp && host->dsr_req) |
| 2019 | mmc_set_dsr(host); |
| 2020 | |
| 2021 | /* |
Pierre Ossman | 89a73cf | 2007-05-01 15:08:30 +0200 | [diff] [blame] | 2022 | * Select card, as all following commands rely on that. |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 2023 | */ |
David Brownell | af51715 | 2007-08-08 09:11:32 -0700 | [diff] [blame] | 2024 | if (!mmc_host_is_spi(host)) { |
| 2025 | err = mmc_select_card(card); |
Sahitya Tummala | ace0684 | 2014-12-09 23:23:25 +0200 | [diff] [blame] | 2026 | if (err) { |
| 2027 | pr_err("%s: %s: mmc_select_card() fails %d\n", |
| 2028 | mmc_hostname(host), __func__, err); |
David Brownell | af51715 | 2007-08-08 09:11:32 -0700 | [diff] [blame] | 2029 | goto free_card; |
Sahitya Tummala | ace0684 | 2014-12-09 23:23:25 +0200 | [diff] [blame] | 2030 | } |
David Brownell | af51715 | 2007-08-08 09:11:32 -0700 | [diff] [blame] | 2031 | } |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 2032 | |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 2033 | if (!oldcard) { |
Ulf Hansson | 076ec38 | 2014-10-20 13:37:24 +0200 | [diff] [blame] | 2034 | /* Read extended CSD. */ |
| 2035 | err = mmc_read_ext_csd(card); |
Sahitya Tummala | ace0684 | 2014-12-09 23:23:25 +0200 | [diff] [blame] | 2036 | if (err) { |
| 2037 | pr_err("%s: %s: mmc_read_ext_csd() fails %d\n", |
| 2038 | mmc_hostname(host), __func__, err); |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 2039 | goto free_card; |
Sahitya Tummala | ace0684 | 2014-12-09 23:23:25 +0200 | [diff] [blame] | 2040 | } |
Philip Rakity | b676f03 | 2011-02-13 23:13:09 -0800 | [diff] [blame] | 2041 | |
Masahiro Yamada | 87e8865 | 2016-04-15 20:16:12 +0900 | [diff] [blame] | 2042 | /* |
| 2043 | * If doing byte addressing, check if required to do sector |
Philip Rakity | b676f03 | 2011-02-13 23:13:09 -0800 | [diff] [blame] | 2044 | * addressing. Handle the case of <2GB cards needing sector |
| 2045 | * addressing. See section 8.1 JEDEC Standard JED84-A441; |
| 2046 | * ocr register has bit 30 set for sector addressing. |
| 2047 | */ |
Masahiro Yamada | 87e8865 | 2016-04-15 20:16:12 +0900 | [diff] [blame] | 2048 | if (rocr & BIT(30)) |
Philip Rakity | b676f03 | 2011-02-13 23:13:09 -0800 | [diff] [blame] | 2049 | mmc_card_set_blockaddr(card); |
| 2050 | |
Adrian Hunter | dfe86cb | 2010-08-11 14:17:46 -0700 | [diff] [blame] | 2051 | /* Erase size depends on CSD and Extended CSD */ |
| 2052 | mmc_set_erase_size(card); |
Sujith Reddy Thumma | 8d0a448 | 2010-12-20 16:27:20 +0530 | [diff] [blame] | 2053 | |
| 2054 | if (card->ext_csd.sectors && (rocr & MMC_CARD_SECTOR_ADDR)) |
| 2055 | mmc_card_set_blockaddr(card); |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 2056 | } |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 2057 | |
| 2058 | /* |
Chuanxiao Dong | 709de99 | 2011-01-22 04:09:41 +0800 | [diff] [blame] | 2059 | * If enhanced_area_en is TRUE, host needs to enable ERASE_GRP_DEF |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 2060 | * bit. This bit will be lost every time after a reset or power off. |
Chuanxiao Dong | 709de99 | 2011-01-22 04:09:41 +0800 | [diff] [blame] | 2061 | */ |
Grégory Soutadé | 69803d4 | 2014-09-15 17:47:09 +0200 | [diff] [blame] | 2062 | if (card->ext_csd.partition_setting_completed || |
Adrian Hunter | 83bb24a | 2012-03-13 05:19:13 -0400 | [diff] [blame] | 2063 | (card->ext_csd.rev >= 3 && (host->caps2 & MMC_CAP2_HC_ERASE_SZ))) { |
Chuanxiao Dong | 709de99 | 2011-01-22 04:09:41 +0800 | [diff] [blame] | 2064 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
Seungwon Jeon | b23cf0b | 2011-09-23 14:15:29 +0900 | [diff] [blame] | 2065 | EXT_CSD_ERASE_GROUP_DEF, 1, |
| 2066 | card->ext_csd.generic_cmd6_time); |
Chuanxiao Dong | 709de99 | 2011-01-22 04:09:41 +0800 | [diff] [blame] | 2067 | |
Sahitya Tummala | ace0684 | 2014-12-09 23:23:25 +0200 | [diff] [blame] | 2068 | if (err && err != -EBADMSG) { |
| 2069 | pr_err("%s: %s: mmc_switch() for ERASE_GRP_DEF fails %d\n", |
| 2070 | mmc_hostname(host), __func__, err); |
Chuanxiao Dong | 709de99 | 2011-01-22 04:09:41 +0800 | [diff] [blame] | 2071 | goto free_card; |
Sahitya Tummala | ace0684 | 2014-12-09 23:23:25 +0200 | [diff] [blame] | 2072 | } |
Chuanxiao Dong | 709de99 | 2011-01-22 04:09:41 +0800 | [diff] [blame] | 2073 | |
| 2074 | if (err) { |
| 2075 | err = 0; |
| 2076 | /* |
| 2077 | * Just disable enhanced area off & sz |
| 2078 | * will try to enable ERASE_GROUP_DEF |
| 2079 | * during next time reinit |
| 2080 | */ |
| 2081 | card->ext_csd.enhanced_area_offset = -EINVAL; |
| 2082 | card->ext_csd.enhanced_area_size = -EINVAL; |
| 2083 | } else { |
| 2084 | card->ext_csd.erase_group_def = 1; |
| 2085 | /* |
| 2086 | * enable ERASE_GRP_DEF successfully. |
| 2087 | * This will affect the erase size, so |
| 2088 | * here need to reset erase size |
| 2089 | */ |
| 2090 | mmc_set_erase_size(card); |
| 2091 | } |
| 2092 | } |
| 2093 | |
| 2094 | /* |
Philip Rakity | 41e2a48 | 2011-03-19 14:10:33 -0400 | [diff] [blame] | 2095 | * Ensure eMMC user default partition is enabled |
| 2096 | */ |
Andrei Warkentin | 371a689 | 2011-04-11 18:10:25 -0500 | [diff] [blame] | 2097 | if (card->ext_csd.part_config & EXT_CSD_PART_CONFIG_ACC_MASK) { |
| 2098 | card->ext_csd.part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK; |
| 2099 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONFIG, |
| 2100 | card->ext_csd.part_config, |
| 2101 | card->ext_csd.part_time); |
Sahitya Tummala | ace0684 | 2014-12-09 23:23:25 +0200 | [diff] [blame] | 2102 | if (err && err != -EBADMSG) { |
| 2103 | pr_err("%s: %s: mmc_switch() for PART_CONFIG fails %d\n", |
| 2104 | mmc_hostname(host), __func__, err); |
Andrei Warkentin | 371a689 | 2011-04-11 18:10:25 -0500 | [diff] [blame] | 2105 | goto free_card; |
Sahitya Tummala | ace0684 | 2014-12-09 23:23:25 +0200 | [diff] [blame] | 2106 | } |
Oluwafemi Adeyemi | f952a47 | 2013-01-03 11:32:53 -0800 | [diff] [blame] | 2107 | card->part_curr = card->ext_csd.part_config & |
| 2108 | EXT_CSD_PART_CONFIG_ACC_MASK; |
Philip Rakity | 41e2a48 | 2011-03-19 14:10:33 -0400 | [diff] [blame] | 2109 | } |
| 2110 | |
| 2111 | /* |
Ulf Hansson | 43235679 | 2013-06-10 17:03:45 +0200 | [diff] [blame] | 2112 | * Enable power_off_notification byte in the ext_csd register |
Girish K S | bec8726 | 2011-10-13 12:04:16 +0530 | [diff] [blame] | 2113 | */ |
Ulf Hansson | 43235679 | 2013-06-10 17:03:45 +0200 | [diff] [blame] | 2114 | if (card->ext_csd.rev >= 6) { |
Girish K S | bec8726 | 2011-10-13 12:04:16 +0530 | [diff] [blame] | 2115 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
| 2116 | EXT_CSD_POWER_OFF_NOTIFICATION, |
| 2117 | EXT_CSD_POWER_ON, |
| 2118 | card->ext_csd.generic_cmd6_time); |
Sahitya Tummala | ace0684 | 2014-12-09 23:23:25 +0200 | [diff] [blame] | 2119 | if (err && err != -EBADMSG) { |
| 2120 | pr_err("%s: %s: mmc_switch() for POWER_ON PON fails %d\n", |
| 2121 | mmc_hostname(host), __func__, err); |
Girish K S | bec8726 | 2011-10-13 12:04:16 +0530 | [diff] [blame] | 2122 | goto free_card; |
Sahitya Tummala | ace0684 | 2014-12-09 23:23:25 +0200 | [diff] [blame] | 2123 | } |
Girish K S | bec8726 | 2011-10-13 12:04:16 +0530 | [diff] [blame] | 2124 | |
Girish K S | 96a85d5 | 2011-11-04 16:22:47 +0530 | [diff] [blame] | 2125 | /* |
| 2126 | * The err can be -EBADMSG or 0, |
| 2127 | * so check for success and update the flag |
| 2128 | */ |
| 2129 | if (!err) |
Ulf Hansson | e6c0858 | 2012-10-05 12:45:39 -0400 | [diff] [blame] | 2130 | card->ext_csd.power_off_notification = EXT_CSD_POWER_ON; |
Girish K S | 96a85d5 | 2011-11-04 16:22:47 +0530 | [diff] [blame] | 2131 | } |
Girish K S | bec8726 | 2011-10-13 12:04:16 +0530 | [diff] [blame] | 2132 | |
| 2133 | /* |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame] | 2134 | * Select timing interface |
Pierre Ossman | 89a73cf | 2007-05-01 15:08:30 +0200 | [diff] [blame] | 2135 | */ |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame] | 2136 | err = mmc_select_timing(card); |
Sahitya Tummala | ace0684 | 2014-12-09 23:23:25 +0200 | [diff] [blame] | 2137 | if (err) { |
| 2138 | pr_err("%s: %s: mmc_select_timing() fails %d\n", |
| 2139 | mmc_hostname(host), __func__, err); |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame] | 2140 | goto free_card; |
Sahitya Tummala | ace0684 | 2014-12-09 23:23:25 +0200 | [diff] [blame] | 2141 | } |
Girish K S | a4924c7 | 2012-01-11 14:04:52 -0500 | [diff] [blame] | 2142 | |
Girish K S | a4924c7 | 2012-01-11 14:04:52 -0500 | [diff] [blame] | 2143 | if (mmc_card_hs200(card)) { |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame] | 2144 | err = mmc_hs200_tuning(card); |
| 2145 | if (err) |
Andrew Gabbasov | 4b75bff | 2014-10-01 07:14:11 -0500 | [diff] [blame] | 2146 | goto free_card; |
Seungwon Jeon | 0a5b643 | 2014-04-23 17:14:58 +0900 | [diff] [blame] | 2147 | |
| 2148 | err = mmc_select_hs400(card); |
| 2149 | if (err) |
Andrew Gabbasov | 4b75bff | 2014-10-01 07:14:11 -0500 | [diff] [blame] | 2150 | goto free_card; |
Guenter Roeck | 943281e | 2017-03-01 14:11:47 -0800 | [diff] [blame] | 2151 | } else if (!mmc_card_hs400es(card)) { |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame] | 2152 | /* Select the desired bus width optionally */ |
| 2153 | err = mmc_select_bus_width(card); |
Anssi Hannula | ef746a3 | 2017-02-13 13:46:41 +0200 | [diff] [blame] | 2154 | if (err > 0 && mmc_card_hs(card)) { |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame] | 2155 | err = mmc_select_hs_ddr(card); |
| 2156 | if (err) |
Andrew Gabbasov | 4b75bff | 2014-10-01 07:14:11 -0500 | [diff] [blame] | 2157 | goto free_card; |
Adrian Hunter | ef0b27d | 2009-09-22 16:44:37 -0700 | [diff] [blame] | 2158 | } |
Pierre Ossman | 89a73cf | 2007-05-01 15:08:30 +0200 | [diff] [blame] | 2159 | } |
| 2160 | |
Talel Shenhar | 7dc5f79 | 2015-05-18 12:12:48 +0300 | [diff] [blame] | 2161 | card->clk_scaling_lowest = host->f_min; |
Veerabhadrarao Badiganti | 6720af3 | 2017-09-12 15:02:01 +0530 | [diff] [blame] | 2162 | if ((card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400) || |
| 2163 | (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200)) |
Talel Shenhar | 7dc5f79 | 2015-05-18 12:12:48 +0300 | [diff] [blame] | 2164 | card->clk_scaling_highest = card->ext_csd.hs200_max_dtr; |
Veerabhadrarao Badiganti | 6720af3 | 2017-09-12 15:02:01 +0530 | [diff] [blame] | 2165 | else if ((card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS) || |
| 2166 | (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52)) |
Talel Shenhar | 7dc5f79 | 2015-05-18 12:12:48 +0300 | [diff] [blame] | 2167 | card->clk_scaling_highest = card->ext_csd.hs_max_dtr; |
| 2168 | else |
| 2169 | card->clk_scaling_highest = card->csd.max_dtr; |
| 2170 | |
Seungwon Jeon | 881d1c2 | 2011-10-14 14:03:21 +0900 | [diff] [blame] | 2171 | /* |
Seungwon Jeon | 2385049 | 2014-04-23 17:08:05 +0900 | [diff] [blame] | 2172 | * Choose the power class with selected bus interface |
| 2173 | */ |
| 2174 | mmc_select_powerclass(card); |
| 2175 | |
| 2176 | /* |
Subhash Jadavani | 52d0974 | 2012-03-06 17:59:12 +0530 | [diff] [blame] | 2177 | * Enable HPI feature (if supported) |
| 2178 | */ |
| 2179 | if (card->ext_csd.hpi) { |
| 2180 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
| 2181 | EXT_CSD_HPI_MGMT, 1, |
| 2182 | card->ext_csd.generic_cmd6_time); |
Sahitya Tummala | ace0684 | 2014-12-09 23:23:25 +0200 | [diff] [blame] | 2183 | if (err && err != -EBADMSG) { |
| 2184 | pr_err("%s: %s: mmc_switch() for HPI_MGMT fails %d\n", |
| 2185 | mmc_hostname(host), __func__, err); |
Subhash Jadavani | 52d0974 | 2012-03-06 17:59:12 +0530 | [diff] [blame] | 2186 | goto free_card; |
Sahitya Tummala | ace0684 | 2014-12-09 23:23:25 +0200 | [diff] [blame] | 2187 | } |
Subhash Jadavani | 52d0974 | 2012-03-06 17:59:12 +0530 | [diff] [blame] | 2188 | if (err) { |
Joe Perches | 6606110 | 2014-09-12 14:56:56 -0700 | [diff] [blame] | 2189 | pr_warn("%s: Enabling HPI failed\n", |
| 2190 | mmc_hostname(card->host)); |
Subhash Jadavani | 52d0974 | 2012-03-06 17:59:12 +0530 | [diff] [blame] | 2191 | err = 0; |
| 2192 | } else |
| 2193 | card->ext_csd.hpi_en = 1; |
| 2194 | } |
| 2195 | |
| 2196 | /* |
Seungwon Jeon | 881d1c2 | 2011-10-14 14:03:21 +0900 | [diff] [blame] | 2197 | * If cache size is higher than 0, this indicates |
| 2198 | * the existence of cache and it can be turned on. |
Talel Shenhar | 981300a | 2015-02-05 14:44:15 +0200 | [diff] [blame] | 2199 | * If HPI is not supported then cache shouldn't be enabled. |
Seungwon Jeon | 881d1c2 | 2011-10-14 14:03:21 +0900 | [diff] [blame] | 2200 | */ |
Pratibhasagar V | 5320226 | 2016-06-09 18:09:31 -0400 | [diff] [blame] | 2201 | if (!mmc_card_broken_hpi(card) && |
Talel Shenhar | c1d30bc | 2015-02-04 17:59:23 +0200 | [diff] [blame] | 2202 | card->ext_csd.cache_size > 0) { |
| 2203 | if (card->ext_csd.hpi_en && |
| 2204 | (!(card->quirks & MMC_QUIRK_CACHE_DISABLE))) { |
| 2205 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
| 2206 | EXT_CSD_CACHE_CTRL, 1, |
| 2207 | card->ext_csd.generic_cmd6_time); |
| 2208 | if (err && err != -EBADMSG) { |
| 2209 | pr_err("%s: %s: fail on CACHE_CTRL ON %d\n", |
Sahitya Tummala | ace0684 | 2014-12-09 23:23:25 +0200 | [diff] [blame] | 2210 | mmc_hostname(host), __func__, err); |
Talel Shenhar | c1d30bc | 2015-02-04 17:59:23 +0200 | [diff] [blame] | 2211 | goto free_card; |
| 2212 | } |
Seungwon Jeon | 881d1c2 | 2011-10-14 14:03:21 +0900 | [diff] [blame] | 2213 | |
Talel Shenhar | c1d30bc | 2015-02-04 17:59:23 +0200 | [diff] [blame] | 2214 | /* |
| 2215 | * Only if no error, cache is turned on successfully. |
| 2216 | */ |
| 2217 | if (err) { |
| 2218 | pr_warn("%s: Cache is supported, but failed to turn on (%d)\n", |
| 2219 | mmc_hostname(card->host), err); |
| 2220 | card->ext_csd.cache_ctrl = 0; |
| 2221 | err = 0; |
| 2222 | } else { |
| 2223 | card->ext_csd.cache_ctrl = 1; |
| 2224 | } |
Sahitya Tummala | 61868a4 | 2015-05-28 16:54:19 +0530 | [diff] [blame] | 2225 | /* enable cache barrier if supported by the device */ |
| 2226 | if (card->ext_csd.cache_ctrl && |
| 2227 | card->ext_csd.barrier_support) { |
| 2228 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
| 2229 | EXT_CSD_BARRIER_CTRL, 1, |
| 2230 | card->ext_csd.generic_cmd6_time); |
| 2231 | if (err && err != -EBADMSG) { |
| 2232 | pr_err("%s: %s: mmc_switch() for BARRIER_CTRL fails %d\n", |
| 2233 | mmc_hostname(host), __func__, |
| 2234 | err); |
| 2235 | goto free_card; |
| 2236 | } |
| 2237 | if (err) { |
| 2238 | pr_warn("%s: Barrier is supported but failed to turn on (%d)\n", |
| 2239 | mmc_hostname(card->host), err); |
| 2240 | card->ext_csd.barrier_en = 0; |
| 2241 | err = 0; |
| 2242 | } else { |
| 2243 | card->ext_csd.barrier_en = 1; |
| 2244 | } |
| 2245 | } |
Seungwon Jeon | 8bc0678 | 2011-12-09 17:47:17 +0900 | [diff] [blame] | 2246 | } else { |
Talel Shenhar | c1d30bc | 2015-02-04 17:59:23 +0200 | [diff] [blame] | 2247 | /* |
| 2248 | * mmc standard doesn't say what is the card default |
| 2249 | * value for EXT_CSD_CACHE_CTRL. |
| 2250 | * Hence, cache may be enabled by default by |
| 2251 | * card vendors. |
| 2252 | * Thus, it is best to explicitly disable cache in case |
| 2253 | * we want to avoid cache. |
| 2254 | */ |
| 2255 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
| 2256 | EXT_CSD_CACHE_CTRL, 0, |
| 2257 | card->ext_csd.generic_cmd6_time); |
| 2258 | if (err) { |
| 2259 | pr_err("%s: %s: fail on CACHE_CTRL OFF %d\n", |
| 2260 | mmc_hostname(host), __func__, err); |
| 2261 | goto free_card; |
| 2262 | } |
Seungwon Jeon | 8bc0678 | 2011-12-09 17:47:17 +0900 | [diff] [blame] | 2263 | } |
Seungwon Jeon | 881d1c2 | 2011-10-14 14:03:21 +0900 | [diff] [blame] | 2264 | } |
Seungwon Jeon | abd9ac1 | 2013-02-06 17:01:43 +0900 | [diff] [blame] | 2265 | /* |
| 2266 | * The mandatory minimum values are defined for packed command. |
| 2267 | * read: 5, write: 3 |
| 2268 | */ |
| 2269 | if (card->ext_csd.max_packed_writes >= 3 && |
| 2270 | card->ext_csd.max_packed_reads >= 5 && |
| 2271 | host->caps2 & MMC_CAP2_PACKED_CMD) { |
| 2272 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
| 2273 | EXT_CSD_EXP_EVENTS_CTRL, |
| 2274 | EXT_CSD_PACKED_EVENT_EN, |
| 2275 | card->ext_csd.generic_cmd6_time); |
Sahitya Tummala | ace0684 | 2014-12-09 23:23:25 +0200 | [diff] [blame] | 2276 | if (err && err != -EBADMSG) { |
| 2277 | pr_err("%s: %s: mmc_switch() for EXP_EVENTS_CTRL fails %d\n", |
| 2278 | mmc_hostname(host), __func__, err); |
Seungwon Jeon | abd9ac1 | 2013-02-06 17:01:43 +0900 | [diff] [blame] | 2279 | goto free_card; |
Sahitya Tummala | ace0684 | 2014-12-09 23:23:25 +0200 | [diff] [blame] | 2280 | } |
Seungwon Jeon | abd9ac1 | 2013-02-06 17:01:43 +0900 | [diff] [blame] | 2281 | if (err) { |
| 2282 | pr_warn("%s: Enabling packed event failed\n", |
| 2283 | mmc_hostname(card->host)); |
| 2284 | card->ext_csd.packed_event_en = 0; |
| 2285 | err = 0; |
| 2286 | } else { |
| 2287 | card->ext_csd.packed_event_en = 1; |
| 2288 | } |
Tatyana Brokhman | 08238ce | 2012-10-07 10:33:13 +0200 | [diff] [blame] | 2289 | |
| 2290 | } |
| 2291 | |
| 2292 | if (!oldcard) { |
| 2293 | if ((host->caps2 & MMC_CAP2_PACKED_CMD) && |
| 2294 | (card->ext_csd.max_packed_writes > 0)) { |
| 2295 | /* |
| 2296 | * We would like to keep the statistics in an index |
| 2297 | * that equals the num of packed requests |
| 2298 | * (1 to max_packed_writes) |
| 2299 | */ |
| 2300 | card->wr_pack_stats.packing_events = kzalloc( |
| 2301 | (card->ext_csd.max_packed_writes + 1) * |
| 2302 | sizeof(*card->wr_pack_stats.packing_events), |
| 2303 | GFP_KERNEL); |
Sahitya Tummala | ace0684 | 2014-12-09 23:23:25 +0200 | [diff] [blame] | 2304 | if (!card->wr_pack_stats.packing_events) { |
| 2305 | pr_err("%s: %s: no memory for packing events\n", |
| 2306 | mmc_hostname(host), __func__); |
Tatyana Brokhman | 08238ce | 2012-10-07 10:33:13 +0200 | [diff] [blame] | 2307 | goto free_card; |
Sahitya Tummala | ace0684 | 2014-12-09 23:23:25 +0200 | [diff] [blame] | 2308 | } |
Tatyana Brokhman | 08238ce | 2012-10-07 10:33:13 +0200 | [diff] [blame] | 2309 | } |
Seungwon Jeon | abd9ac1 | 2013-02-06 17:01:43 +0900 | [diff] [blame] | 2310 | } |
| 2311 | |
Dov Levenglick | a029639 | 2015-06-24 19:51:58 +0300 | [diff] [blame] | 2312 | /* |
| 2313 | * Start auto bkops, if supported. |
| 2314 | * |
| 2315 | * Note: This leaves the possibility of having both manual and |
| 2316 | * auto bkops running in parallel. The runtime implementation |
| 2317 | * will allow this, but ignore bkops exceptions on the premises |
| 2318 | * that auto bkops will eventually kick in and the device will |
| 2319 | * handle bkops without START_BKOPS from the host. |
| 2320 | */ |
| 2321 | if (mmc_card_support_auto_bkops(card)) { |
| 2322 | /* |
| 2323 | * Ignore the return value of setting auto bkops. |
| 2324 | * If it failed, will run in backward compatible mode. |
| 2325 | */ |
| 2326 | (void)mmc_set_auto_bkops(card, true); |
| 2327 | } |
| 2328 | |
Dov Levenglick | bbc49f2 | 2015-06-30 14:19:16 +0300 | [diff] [blame] | 2329 | if (card->ext_csd.cmdq_support && (card->host->caps2 & |
| 2330 | MMC_CAP2_CMD_QUEUE)) { |
| 2331 | err = mmc_select_cmdq(card); |
| 2332 | if (err) { |
| 2333 | pr_err("%s: selecting CMDQ mode: failed: %d\n", |
| 2334 | mmc_hostname(card->host), err); |
| 2335 | card->ext_csd.cmdq_support = 0; |
| 2336 | oldcard = card; |
| 2337 | goto reinit; |
| 2338 | } |
| 2339 | } |
| 2340 | |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 2341 | return 0; |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 2342 | |
| 2343 | free_card: |
Sahitya Tummala | ace0684 | 2014-12-09 23:23:25 +0200 | [diff] [blame] | 2344 | if (!oldcard) { |
| 2345 | host->card = NULL; |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 2346 | mmc_remove_card(card); |
Sahitya Tummala | ace0684 | 2014-12-09 23:23:25 +0200 | [diff] [blame] | 2347 | } |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 2348 | err: |
Pierre Ossman | adf66a0 | 2007-07-22 23:08:30 +0200 | [diff] [blame] | 2349 | return err; |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 2350 | } |
| 2351 | |
Maya Erez | be076d4 | 2015-09-29 17:34:03 +0300 | [diff] [blame] | 2352 | static int mmc_can_sleepawake(struct mmc_host *host) |
Ulf Hansson | 07a6821 | 2013-04-19 15:12:11 +0200 | [diff] [blame] | 2353 | { |
Maya Erez | be076d4 | 2015-09-29 17:34:03 +0300 | [diff] [blame] | 2354 | return host && (host->caps2 & MMC_CAP2_SLEEP_AWAKE) && host->card && |
| 2355 | (host->card->ext_csd.rev >= 3); |
Ulf Hansson | 07a6821 | 2013-04-19 15:12:11 +0200 | [diff] [blame] | 2356 | } |
| 2357 | |
Maya Erez | be076d4 | 2015-09-29 17:34:03 +0300 | [diff] [blame] | 2358 | static int mmc_sleepawake(struct mmc_host *host, bool sleep) |
Ulf Hansson | 07a6821 | 2013-04-19 15:12:11 +0200 | [diff] [blame] | 2359 | { |
| 2360 | struct mmc_command cmd = {0}; |
| 2361 | struct mmc_card *card = host->card; |
Sahitya Tummala | 47c53d9 | 2014-04-18 13:00:20 +0530 | [diff] [blame] | 2362 | unsigned int timeout_ms; |
Ulf Hansson | 07a6821 | 2013-04-19 15:12:11 +0200 | [diff] [blame] | 2363 | int err; |
| 2364 | |
Sahitya Tummala | 47c53d9 | 2014-04-18 13:00:20 +0530 | [diff] [blame] | 2365 | if (!card) { |
| 2366 | pr_err("%s: %s: invalid card\n", mmc_hostname(host), __func__); |
| 2367 | return -EINVAL; |
| 2368 | } |
| 2369 | |
| 2370 | timeout_ms = DIV_ROUND_UP(card->ext_csd.sa_timeout, 10000); |
| 2371 | if (card->ext_csd.rev >= 3 && |
| 2372 | card->part_curr == EXT_CSD_PART_CONFIG_ACC_RPMB) { |
| 2373 | u8 part_config = card->ext_csd.part_config; |
| 2374 | |
| 2375 | /* |
| 2376 | * If the last access before suspend is RPMB access, then |
| 2377 | * switch to default part config so that sleep command CMD5 |
| 2378 | * and deselect CMD7 can be sent to the card. |
| 2379 | */ |
| 2380 | part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK; |
| 2381 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
| 2382 | EXT_CSD_PART_CONFIG, |
| 2383 | part_config, |
| 2384 | card->ext_csd.part_time); |
| 2385 | if (err) { |
| 2386 | pr_err("%s: %s: failed to switch to default part config %x\n", |
| 2387 | mmc_hostname(host), __func__, part_config); |
| 2388 | return err; |
| 2389 | } |
| 2390 | card->ext_csd.part_config = part_config; |
| 2391 | card->part_curr = card->ext_csd.part_config & |
| 2392 | EXT_CSD_PART_CONFIG_ACC_MASK; |
| 2393 | } |
| 2394 | |
Adrian Hunter | 436f8da | 2015-05-07 13:10:18 +0300 | [diff] [blame] | 2395 | /* Re-tuning can't be done once the card is deselected */ |
| 2396 | mmc_retune_hold(host); |
| 2397 | |
Maya Erez | be076d4 | 2015-09-29 17:34:03 +0300 | [diff] [blame] | 2398 | if (sleep) { |
| 2399 | err = mmc_deselect_cards(host); |
| 2400 | if (err) |
| 2401 | goto out_release; |
| 2402 | } |
Ulf Hansson | 07a6821 | 2013-04-19 15:12:11 +0200 | [diff] [blame] | 2403 | |
| 2404 | cmd.opcode = MMC_SLEEP_AWAKE; |
| 2405 | cmd.arg = card->rca << 16; |
Maya Erez | be076d4 | 2015-09-29 17:34:03 +0300 | [diff] [blame] | 2406 | if (sleep) |
| 2407 | cmd.arg |= 1 << 15; |
Ulf Hansson | 07a6821 | 2013-04-19 15:12:11 +0200 | [diff] [blame] | 2408 | |
Ulf Hansson | cb962e0 | 2014-01-14 23:17:36 +0100 | [diff] [blame] | 2409 | /* |
| 2410 | * If the max_busy_timeout of the host is specified, validate it against |
| 2411 | * the sleep cmd timeout. A failure means we need to prevent the host |
| 2412 | * from doing hw busy detection, which is done by converting to a R1 |
| 2413 | * response instead of a R1B. |
| 2414 | */ |
| 2415 | if (host->max_busy_timeout && (timeout_ms > host->max_busy_timeout)) { |
| 2416 | cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; |
| 2417 | } else { |
| 2418 | cmd.flags = MMC_RSP_R1B | MMC_CMD_AC; |
| 2419 | cmd.busy_timeout = timeout_ms; |
| 2420 | } |
| 2421 | |
Ulf Hansson | 07a6821 | 2013-04-19 15:12:11 +0200 | [diff] [blame] | 2422 | err = mmc_wait_for_cmd(host, &cmd, 0); |
| 2423 | if (err) |
Adrian Hunter | 436f8da | 2015-05-07 13:10:18 +0300 | [diff] [blame] | 2424 | goto out_release; |
Ulf Hansson | 07a6821 | 2013-04-19 15:12:11 +0200 | [diff] [blame] | 2425 | |
| 2426 | /* |
| 2427 | * If the host does not wait while the card signals busy, then we will |
| 2428 | * will have to wait the sleep/awake timeout. Note, we cannot use the |
| 2429 | * SEND_STATUS command to poll the status because that command (and most |
| 2430 | * others) is invalid while the card sleeps. |
| 2431 | */ |
Ulf Hansson | cb962e0 | 2014-01-14 23:17:36 +0100 | [diff] [blame] | 2432 | if (!cmd.busy_timeout || !(host->caps & MMC_CAP_WAIT_WHILE_BUSY)) |
| 2433 | mmc_delay(timeout_ms); |
Ulf Hansson | 07a6821 | 2013-04-19 15:12:11 +0200 | [diff] [blame] | 2434 | |
Maya Erez | be076d4 | 2015-09-29 17:34:03 +0300 | [diff] [blame] | 2435 | if (!sleep) |
| 2436 | err = mmc_select_card(card); |
| 2437 | |
Adrian Hunter | 436f8da | 2015-05-07 13:10:18 +0300 | [diff] [blame] | 2438 | out_release: |
| 2439 | mmc_retune_release(host); |
Ulf Hansson | 07a6821 | 2013-04-19 15:12:11 +0200 | [diff] [blame] | 2440 | return err; |
| 2441 | } |
| 2442 | |
Ulf Hansson | e6c0858 | 2012-10-05 12:45:39 -0400 | [diff] [blame] | 2443 | static int mmc_can_poweroff_notify(const struct mmc_card *card) |
| 2444 | { |
| 2445 | return card && |
| 2446 | mmc_card_mmc(card) && |
| 2447 | (card->ext_csd.power_off_notification == EXT_CSD_POWER_ON); |
| 2448 | } |
| 2449 | |
| 2450 | static int mmc_poweroff_notify(struct mmc_card *card, unsigned int notify_type) |
| 2451 | { |
| 2452 | unsigned int timeout = card->ext_csd.generic_cmd6_time; |
| 2453 | int err; |
| 2454 | |
| 2455 | /* Use EXT_CSD_POWER_OFF_SHORT as default notification type. */ |
| 2456 | if (notify_type == EXT_CSD_POWER_OFF_LONG) |
| 2457 | timeout = card->ext_csd.power_off_longtime; |
| 2458 | |
Ulf Hansson | 878e200 | 2013-09-09 11:57:57 +0200 | [diff] [blame] | 2459 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
| 2460 | EXT_CSD_POWER_OFF_NOTIFICATION, |
Ulf Hansson | 4509f8477 | 2014-01-08 16:09:33 +0100 | [diff] [blame] | 2461 | notify_type, timeout, true, false, false); |
Ulf Hansson | e6c0858 | 2012-10-05 12:45:39 -0400 | [diff] [blame] | 2462 | if (err) |
| 2463 | pr_err("%s: Power Off Notification timed out, %u\n", |
| 2464 | mmc_hostname(card->host), timeout); |
| 2465 | |
| 2466 | /* Disable the power off notification after the switch operation. */ |
| 2467 | card->ext_csd.power_off_notification = EXT_CSD_NO_POWER_NOTIFICATION; |
| 2468 | |
| 2469 | return err; |
| 2470 | } |
| 2471 | |
Krishna Konda | a7ea2dc | 2015-06-29 19:20:05 -0700 | [diff] [blame] | 2472 | int mmc_send_pon(struct mmc_card *card) |
Tatyana Brokhman | 4fbb0bf | 2014-12-04 22:03:42 +0200 | [diff] [blame] | 2473 | { |
| 2474 | int err = 0; |
| 2475 | struct mmc_host *host = card->host; |
| 2476 | |
Krishna Konda | a7ea2dc | 2015-06-29 19:20:05 -0700 | [diff] [blame] | 2477 | if (!mmc_can_poweroff_notify(card)) |
| 2478 | goto out; |
| 2479 | |
Sahitya Tummala | d51865b | 2015-11-18 10:37:56 +0530 | [diff] [blame] | 2480 | mmc_get_card(card); |
Krishna Konda | a7ea2dc | 2015-06-29 19:20:05 -0700 | [diff] [blame] | 2481 | if (card->pon_type & MMC_LONG_PON) |
Tatyana Brokhman | 4fbb0bf | 2014-12-04 22:03:42 +0200 | [diff] [blame] | 2482 | err = mmc_poweroff_notify(host->card, EXT_CSD_POWER_OFF_LONG); |
Krishna Konda | a7ea2dc | 2015-06-29 19:20:05 -0700 | [diff] [blame] | 2483 | else if (card->pon_type & MMC_SHRT_PON) |
| 2484 | err = mmc_poweroff_notify(host->card, EXT_CSD_POWER_OFF_SHORT); |
| 2485 | if (err) |
| 2486 | pr_warn("%s: error %d sending PON type %u", |
| 2487 | mmc_hostname(host), err, card->pon_type); |
Sahitya Tummala | d51865b | 2015-11-18 10:37:56 +0530 | [diff] [blame] | 2488 | mmc_put_card(card); |
Krishna Konda | a7ea2dc | 2015-06-29 19:20:05 -0700 | [diff] [blame] | 2489 | out: |
Tatyana Brokhman | 4fbb0bf | 2014-12-04 22:03:42 +0200 | [diff] [blame] | 2490 | return err; |
| 2491 | } |
| 2492 | |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 2493 | /* |
| 2494 | * Host is being removed. Free up the current card. |
| 2495 | */ |
| 2496 | static void mmc_remove(struct mmc_host *host) |
| 2497 | { |
| 2498 | BUG_ON(!host); |
| 2499 | BUG_ON(!host->card); |
| 2500 | |
Tatyana Brokhman | 4fbb0bf | 2014-12-04 22:03:42 +0200 | [diff] [blame] | 2501 | unregister_reboot_notifier(&host->card->reboot_notify); |
Pratibhasagar V | 4e3a8b4 | 2014-04-09 12:52:46 +0530 | [diff] [blame] | 2502 | |
| 2503 | mmc_exit_clk_scaling(host); |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 2504 | mmc_remove_card(host->card); |
Sujith Reddy Thumma | 8a5e147 | 2011-04-28 18:29:34 +0530 | [diff] [blame] | 2505 | |
| 2506 | mmc_claim_host(host); |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 2507 | host->card = NULL; |
Sujith Reddy Thumma | 8a5e147 | 2011-04-28 18:29:34 +0530 | [diff] [blame] | 2508 | mmc_release_host(host); |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 2509 | } |
| 2510 | |
| 2511 | /* |
Adrian Hunter | d304950 | 2011-11-28 16:22:00 +0200 | [diff] [blame] | 2512 | * Card detection - card is alive. |
| 2513 | */ |
| 2514 | static int mmc_alive(struct mmc_host *host) |
| 2515 | { |
| 2516 | return mmc_send_status(host->card, NULL); |
| 2517 | } |
| 2518 | |
| 2519 | /* |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 2520 | * Card detection callback from host. |
| 2521 | */ |
| 2522 | static void mmc_detect(struct mmc_host *host) |
| 2523 | { |
| 2524 | int err; |
| 2525 | |
| 2526 | BUG_ON(!host); |
| 2527 | BUG_ON(!host->card); |
| 2528 | |
Ulf Hansson | e94cfef | 2013-05-02 14:02:38 +0200 | [diff] [blame] | 2529 | mmc_get_card(host->card); |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 2530 | |
| 2531 | /* |
| 2532 | * Just check if our card has been removed. |
| 2533 | */ |
Adrian Hunter | d304950 | 2011-11-28 16:22:00 +0200 | [diff] [blame] | 2534 | err = _mmc_detect_card_removed(host); |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 2535 | |
Ulf Hansson | e94cfef | 2013-05-02 14:02:38 +0200 | [diff] [blame] | 2536 | mmc_put_card(host->card); |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 2537 | |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 2538 | if (err) { |
Pierre Ossman | 4101c16 | 2007-05-19 13:39:01 +0200 | [diff] [blame] | 2539 | mmc_remove(host); |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 2540 | |
| 2541 | mmc_claim_host(host); |
| 2542 | mmc_detach_bus(host); |
Ulf Hansson | 7f7e412 | 2011-09-21 14:08:13 -0400 | [diff] [blame] | 2543 | mmc_power_off(host); |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 2544 | mmc_release_host(host); |
| 2545 | } |
| 2546 | } |
| 2547 | |
Maya Erez | be076d4 | 2015-09-29 17:34:03 +0300 | [diff] [blame] | 2548 | static int mmc_cache_card_ext_csd(struct mmc_host *host) |
| 2549 | { |
| 2550 | int err; |
| 2551 | u8 *ext_csd; |
| 2552 | struct mmc_card *card = host->card; |
| 2553 | |
| 2554 | err = mmc_get_ext_csd(card, &ext_csd); |
| 2555 | if (err || !ext_csd) { |
| 2556 | pr_err("%s: %s: mmc_get_ext_csd failed (%d)\n", |
| 2557 | mmc_hostname(host), __func__, err); |
| 2558 | return err; |
| 2559 | } |
| 2560 | |
| 2561 | /* only cache read/write fields that the sw changes */ |
| 2562 | card->ext_csd.raw_ext_csd_cmdq = ext_csd[EXT_CSD_CMDQ]; |
| 2563 | card->ext_csd.raw_ext_csd_cache_ctrl = ext_csd[EXT_CSD_CACHE_CTRL]; |
| 2564 | card->ext_csd.raw_ext_csd_bus_width = ext_csd[EXT_CSD_BUS_WIDTH]; |
| 2565 | card->ext_csd.raw_ext_csd_hs_timing = ext_csd[EXT_CSD_HS_TIMING]; |
| 2566 | |
| 2567 | kfree(ext_csd); |
| 2568 | |
| 2569 | return 0; |
| 2570 | } |
| 2571 | |
| 2572 | static int mmc_test_awake_ext_csd(struct mmc_host *host) |
| 2573 | { |
| 2574 | int err; |
| 2575 | u8 *ext_csd; |
| 2576 | struct mmc_card *card = host->card; |
| 2577 | |
| 2578 | err = mmc_get_ext_csd(card, &ext_csd); |
Pavan Anamula | f2dda06 | 2016-03-30 22:07:56 +0530 | [diff] [blame] | 2579 | if (err || !ext_csd) { |
Maya Erez | be076d4 | 2015-09-29 17:34:03 +0300 | [diff] [blame] | 2580 | pr_err("%s: %s: mmc_get_ext_csd failed (%d)\n", |
| 2581 | mmc_hostname(host), __func__, err); |
| 2582 | return err; |
| 2583 | } |
| 2584 | |
| 2585 | /* only compare read/write fields that the sw changes */ |
| 2586 | pr_debug("%s: %s: type(cached:current) cmdq(%d:%d) cache_ctrl(%d:%d) bus_width (%d:%d) timing(%d:%d)\n", |
| 2587 | mmc_hostname(host), __func__, |
| 2588 | card->ext_csd.raw_ext_csd_cmdq, |
| 2589 | ext_csd[EXT_CSD_CMDQ], |
| 2590 | card->ext_csd.raw_ext_csd_cache_ctrl, |
| 2591 | ext_csd[EXT_CSD_CACHE_CTRL], |
| 2592 | card->ext_csd.raw_ext_csd_bus_width, |
| 2593 | ext_csd[EXT_CSD_BUS_WIDTH], |
| 2594 | card->ext_csd.raw_ext_csd_hs_timing, |
| 2595 | ext_csd[EXT_CSD_HS_TIMING]); |
| 2596 | |
| 2597 | err = !((card->ext_csd.raw_ext_csd_cmdq == |
| 2598 | ext_csd[EXT_CSD_CMDQ]) && |
| 2599 | (card->ext_csd.raw_ext_csd_cache_ctrl == |
| 2600 | ext_csd[EXT_CSD_CACHE_CTRL]) && |
| 2601 | (card->ext_csd.raw_ext_csd_bus_width == |
| 2602 | ext_csd[EXT_CSD_BUS_WIDTH]) && |
| 2603 | (card->ext_csd.raw_ext_csd_hs_timing == |
| 2604 | ext_csd[EXT_CSD_HS_TIMING])); |
| 2605 | |
| 2606 | kfree(ext_csd); |
| 2607 | |
| 2608 | return err; |
| 2609 | } |
| 2610 | |
Ulf Hansson | 03d071f | 2013-06-10 17:03:43 +0200 | [diff] [blame] | 2611 | static int _mmc_suspend(struct mmc_host *host, bool is_suspend) |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 2612 | { |
Ritesh Harjani | e2f8af3d | 2016-12-04 21:37:41 +0530 | [diff] [blame] | 2613 | int err = 0, ret; |
Balaji T K | c380546 | 2011-09-08 22:08:39 +0530 | [diff] [blame] | 2614 | |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 2615 | BUG_ON(!host); |
| 2616 | BUG_ON(!host->card); |
| 2617 | |
Talel Shenhar | 999102c | 2015-09-06 16:38:42 +0300 | [diff] [blame] | 2618 | err = mmc_suspend_clk_scaling(host); |
| 2619 | if (err) { |
| 2620 | pr_err("%s: %s: fail to suspend clock scaling (%d)\n", |
| 2621 | mmc_hostname(host), __func__, err); |
Ritesh Harjani | e2f8af3d | 2016-12-04 21:37:41 +0530 | [diff] [blame] | 2622 | if (host->card->cmdq_init) |
| 2623 | wake_up(&host->cmdq_ctx.wait); |
Talel Shenhar | 999102c | 2015-09-06 16:38:42 +0300 | [diff] [blame] | 2624 | return err; |
| 2625 | } |
Sujit Reddy Thumma | cb18d85 | 2014-12-04 09:57:23 +0200 | [diff] [blame] | 2626 | |
Talel Shenhar | a52f84e | 2015-05-27 14:20:34 +0300 | [diff] [blame] | 2627 | mmc_claim_host(host); |
| 2628 | |
| 2629 | if (mmc_card_suspended(host->card)) |
| 2630 | goto out; |
| 2631 | |
Sahitya Tummala | 508905dd | 2015-09-10 11:26:59 +0530 | [diff] [blame] | 2632 | if (host->card->cmdq_init) { |
Konstantin Dorfman | 41834d6 | 2015-06-22 12:11:12 +0300 | [diff] [blame] | 2633 | BUG_ON(host->cmdq_ctx.active_reqs); |
| 2634 | |
| 2635 | err = mmc_cmdq_halt(host, true); |
| 2636 | if (err) { |
| 2637 | pr_err("%s: halt: failed: %d\n", __func__, err); |
| 2638 | goto out; |
| 2639 | } |
| 2640 | mmc_host_clk_hold(host); |
| 2641 | host->cmdq_ops->disable(host, true); |
| 2642 | mmc_host_clk_release(host); |
| 2643 | } |
| 2644 | |
Ulf Hansson | 39b9431 | 2013-05-02 14:02:36 +0200 | [diff] [blame] | 2645 | if (mmc_card_doing_bkops(host->card)) { |
| 2646 | err = mmc_stop_bkops(host->card); |
| 2647 | if (err) |
Ritesh Harjani | e2f8af3d | 2016-12-04 21:37:41 +0530 | [diff] [blame] | 2648 | goto out_err; |
Ulf Hansson | 39b9431 | 2013-05-02 14:02:36 +0200 | [diff] [blame] | 2649 | } |
| 2650 | |
Ulf Hansson | 10e5d96 | 2013-12-16 16:23:22 +0100 | [diff] [blame] | 2651 | err = mmc_flush_cache(host->card); |
Maya Erez | 881d926 | 2013-01-28 16:44:22 -0500 | [diff] [blame] | 2652 | if (err) |
Ritesh Harjani | e2f8af3d | 2016-12-04 21:37:41 +0530 | [diff] [blame] | 2653 | goto out_err; |
Maya Erez | 881d926 | 2013-01-28 16:44:22 -0500 | [diff] [blame] | 2654 | |
Maya Erez | be076d4 | 2015-09-29 17:34:03 +0300 | [diff] [blame] | 2655 | if (mmc_can_sleepawake(host)) { |
Ritesh Harjani | 06c3f6a | 2016-04-06 13:40:01 +0530 | [diff] [blame] | 2656 | /* |
| 2657 | * For caching host->ios to cached_ios we need to |
| 2658 | * make sure that clocks are not gated otherwise |
| 2659 | * cached_ios->clock will be 0. |
| 2660 | */ |
| 2661 | mmc_host_clk_hold(host); |
Maya Erez | be076d4 | 2015-09-29 17:34:03 +0300 | [diff] [blame] | 2662 | memcpy(&host->cached_ios, &host->ios, sizeof(host->cached_ios)); |
| 2663 | mmc_cache_card_ext_csd(host); |
| 2664 | err = mmc_sleepawake(host, true); |
Ritesh Harjani | 06c3f6a | 2016-04-06 13:40:01 +0530 | [diff] [blame] | 2665 | mmc_host_clk_release(host); |
Maya Erez | be076d4 | 2015-09-29 17:34:03 +0300 | [diff] [blame] | 2666 | } else if (!mmc_host_is_spi(host)) { |
Jaehoon Chung | 85e727e | 2012-05-31 20:31:47 +0900 | [diff] [blame] | 2667 | err = mmc_deselect_cards(host); |
Maya Erez | be076d4 | 2015-09-29 17:34:03 +0300 | [diff] [blame] | 2668 | } |
Nicolas Pitre | 95cdfb7 | 2009-09-22 16:45:29 -0700 | [diff] [blame] | 2669 | |
Ritesh Harjani | e2f8af3d | 2016-12-04 21:37:41 +0530 | [diff] [blame] | 2670 | if (err) |
| 2671 | goto out_err; |
| 2672 | mmc_power_off(host); |
| 2673 | mmc_card_set_suspended(host->card); |
| 2674 | |
| 2675 | goto out; |
| 2676 | |
| 2677 | out_err: |
| 2678 | /* |
| 2679 | * In case of err let's put controller back in cmdq mode and unhalt |
| 2680 | * the controller. |
| 2681 | * We expect cmdq_enable and unhalt won't return any error |
| 2682 | * since it is anyway enabling few registers. |
| 2683 | */ |
| 2684 | if (host->card->cmdq_init) { |
| 2685 | mmc_host_clk_hold(host); |
| 2686 | ret = host->cmdq_ops->enable(host); |
| 2687 | if (ret) |
| 2688 | pr_err("%s: %s: enabling CMDQ mode failed (%d)\n", |
| 2689 | mmc_hostname(host), __func__, ret); |
| 2690 | mmc_host_clk_release(host); |
| 2691 | mmc_cmdq_halt(host, false); |
Ulf Hansson | 9ec775f | 2013-10-02 17:37:09 +0200 | [diff] [blame] | 2692 | } |
Ritesh Harjani | e2f8af3d | 2016-12-04 21:37:41 +0530 | [diff] [blame] | 2693 | |
Maya Erez | 881d926 | 2013-01-28 16:44:22 -0500 | [diff] [blame] | 2694 | out: |
Subhash Jadavani | d667bff | 2015-11-10 15:13:22 -0800 | [diff] [blame] | 2695 | /* Kick CMDQ thread to process any requests came in while suspending */ |
| 2696 | if (host->card->cmdq_init) |
| 2697 | wake_up(&host->cmdq_ctx.wait); |
| 2698 | |
Maya Erez | 881d926 | 2013-01-28 16:44:22 -0500 | [diff] [blame] | 2699 | mmc_release_host(host); |
Ritesh Harjani | e2f8af3d | 2016-12-04 21:37:41 +0530 | [diff] [blame] | 2700 | if (err) |
| 2701 | mmc_resume_clk_scaling(host); |
Balaji T K | c380546 | 2011-09-08 22:08:39 +0530 | [diff] [blame] | 2702 | return err; |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 2703 | } |
| 2704 | |
Maya Erez | be076d4 | 2015-09-29 17:34:03 +0300 | [diff] [blame] | 2705 | static int mmc_partial_init(struct mmc_host *host) |
| 2706 | { |
| 2707 | int err = 0; |
| 2708 | struct mmc_card *card = host->card; |
| 2709 | |
| 2710 | pr_debug("%s: %s: starting partial init\n", |
| 2711 | mmc_hostname(host), __func__); |
| 2712 | |
| 2713 | mmc_set_bus_width(host, host->cached_ios.bus_width); |
| 2714 | mmc_set_timing(host, host->cached_ios.timing); |
| 2715 | mmc_set_clock(host, host->cached_ios.clock); |
| 2716 | mmc_set_bus_mode(host, host->cached_ios.bus_mode); |
| 2717 | |
| 2718 | mmc_host_clk_hold(host); |
| 2719 | |
Sahitya Tummala | c728dcb | 2016-04-27 16:17:44 +0530 | [diff] [blame] | 2720 | if (mmc_card_hs400(card)) { |
Maya Erez | be076d4 | 2015-09-29 17:34:03 +0300 | [diff] [blame] | 2721 | if (card->ext_csd.strobe_support && host->ops->enhanced_strobe) |
| 2722 | err = host->ops->enhanced_strobe(host); |
Ritesh Harjani | 9fba0b4 | 2017-02-20 13:50:58 +0530 | [diff] [blame] | 2723 | else if (host->ops->execute_tuning) |
| 2724 | err = host->ops->execute_tuning(host, |
| 2725 | MMC_SEND_TUNING_BLOCK_HS200); |
Sahitya Tummala | c728dcb | 2016-04-27 16:17:44 +0530 | [diff] [blame] | 2726 | } else if (mmc_card_hs200(card) && host->ops->execute_tuning) { |
| 2727 | err = host->ops->execute_tuning(host, |
| 2728 | MMC_SEND_TUNING_BLOCK_HS200); |
Maya Erez | be076d4 | 2015-09-29 17:34:03 +0300 | [diff] [blame] | 2729 | if (err) |
| 2730 | pr_warn("%s: %s: tuning execution failed (%d)\n", |
| 2731 | mmc_hostname(host), __func__, err); |
| 2732 | } |
| 2733 | |
| 2734 | /* |
| 2735 | * The ext_csd is read to make sure the card did not went through |
| 2736 | * Power-failure during sleep period. |
| 2737 | * A subset of the W/E_P, W/C_P register will be tested. In case |
| 2738 | * these registers values are different from the values that were |
| 2739 | * cached during suspend, we will conclude that a Power-failure occurred |
| 2740 | * and will do full initialization sequence. |
| 2741 | * In addition, full init sequence also transfer ext_csd before moving |
| 2742 | * to CMDQ mode which has a side affect of configuring SDHCI registers |
| 2743 | * which needed to be done before moving to CMDQ mode. The same |
| 2744 | * registers need to be configured for partial init. |
| 2745 | */ |
| 2746 | err = mmc_test_awake_ext_csd(host); |
| 2747 | if (err) { |
| 2748 | pr_debug("%s: %s: fail on ext_csd read (%d)\n", |
| 2749 | mmc_hostname(host), __func__, err); |
| 2750 | goto out; |
| 2751 | } |
| 2752 | pr_debug("%s: %s: reading and comparing ext_csd successful\n", |
| 2753 | mmc_hostname(host), __func__); |
| 2754 | |
| 2755 | if (card->ext_csd.cmdq_support && (card->host->caps2 & |
| 2756 | MMC_CAP2_CMD_QUEUE)) { |
| 2757 | err = mmc_select_cmdq(card); |
| 2758 | if (err) { |
| 2759 | pr_warn("%s: %s: enabling CMDQ mode failed (%d)\n", |
| 2760 | mmc_hostname(card->host), |
| 2761 | __func__, err); |
| 2762 | } |
| 2763 | } |
| 2764 | out: |
| 2765 | mmc_host_clk_release(host); |
| 2766 | |
| 2767 | pr_debug("%s: %s: done partial init (%d)\n", |
| 2768 | mmc_hostname(host), __func__, err); |
| 2769 | |
| 2770 | return err; |
| 2771 | } |
| 2772 | |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 2773 | /* |
Ulf Hansson | 0cb403a | 2013-10-10 14:20:05 +0200 | [diff] [blame] | 2774 | * Suspend callback |
Ulf Hansson | 03d071f | 2013-06-10 17:03:43 +0200 | [diff] [blame] | 2775 | */ |
| 2776 | static int mmc_suspend(struct mmc_host *host) |
| 2777 | { |
Ulf Hansson | 0cb403a | 2013-10-10 14:20:05 +0200 | [diff] [blame] | 2778 | int err; |
Konstantin Dorfman | 892f84e | 2015-02-12 13:37:56 +0200 | [diff] [blame] | 2779 | ktime_t start = ktime_get(); |
Ulf Hansson | 0cb403a | 2013-10-10 14:20:05 +0200 | [diff] [blame] | 2780 | |
Sayali Lokhande | 686b42a | 2016-12-12 08:48:37 +0530 | [diff] [blame] | 2781 | MMC_TRACE(host, "%s: Enter\n", __func__); |
Ulf Hansson | 0cb403a | 2013-10-10 14:20:05 +0200 | [diff] [blame] | 2782 | err = _mmc_suspend(host, true); |
| 2783 | if (!err) { |
| 2784 | pm_runtime_disable(&host->card->dev); |
| 2785 | pm_runtime_set_suspended(&host->card->dev); |
| 2786 | } |
| 2787 | |
Konstantin Dorfman | 892f84e | 2015-02-12 13:37:56 +0200 | [diff] [blame] | 2788 | trace_mmc_suspend(mmc_hostname(host), err, |
| 2789 | ktime_to_us(ktime_sub(ktime_get(), start))); |
Sayali Lokhande | 686b42a | 2016-12-12 08:48:37 +0530 | [diff] [blame] | 2790 | MMC_TRACE(host, "%s: Exit err: %d\n", __func__, err); |
Ulf Hansson | 0cb403a | 2013-10-10 14:20:05 +0200 | [diff] [blame] | 2791 | return err; |
Ulf Hansson | 03d071f | 2013-06-10 17:03:43 +0200 | [diff] [blame] | 2792 | } |
| 2793 | |
| 2794 | /* |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 2795 | * This function tries to determine if the same card is still present |
| 2796 | * and, if so, restore all state to it. |
| 2797 | */ |
Ulf Hansson | 0cb403a | 2013-10-10 14:20:05 +0200 | [diff] [blame] | 2798 | static int _mmc_resume(struct mmc_host *host) |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 2799 | { |
Maya Erez | be076d4 | 2015-09-29 17:34:03 +0300 | [diff] [blame] | 2800 | int err = -ENOSYS; |
Sahitya Tummala | ace0684 | 2014-12-09 23:23:25 +0200 | [diff] [blame] | 2801 | int retries; |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 2802 | |
| 2803 | BUG_ON(!host); |
| 2804 | BUG_ON(!host->card); |
| 2805 | |
| 2806 | mmc_claim_host(host); |
Ulf Hansson | 9ec775f | 2013-10-02 17:37:09 +0200 | [diff] [blame] | 2807 | |
Sujit Reddy Thumma | cb18d85 | 2014-12-04 09:57:23 +0200 | [diff] [blame] | 2808 | if (!mmc_card_suspended(host->card)) { |
| 2809 | mmc_release_host(host); |
Ulf Hansson | 9ec775f | 2013-10-02 17:37:09 +0200 | [diff] [blame] | 2810 | goto out; |
Sujit Reddy Thumma | cb18d85 | 2014-12-04 09:57:23 +0200 | [diff] [blame] | 2811 | } |
Ulf Hansson | 9ec775f | 2013-10-02 17:37:09 +0200 | [diff] [blame] | 2812 | |
Ulf Hansson | 6904115 | 2013-09-13 11:31:33 +0200 | [diff] [blame] | 2813 | mmc_power_up(host, host->card->ocr); |
Sahitya Tummala | ace0684 | 2014-12-09 23:23:25 +0200 | [diff] [blame] | 2814 | retries = 3; |
| 2815 | while (retries) { |
Maya Erez | be076d4 | 2015-09-29 17:34:03 +0300 | [diff] [blame] | 2816 | if (mmc_can_sleepawake(host)) { |
| 2817 | err = mmc_sleepawake(host, false); |
| 2818 | if (!err) |
| 2819 | err = mmc_partial_init(host); |
| 2820 | if (err) |
| 2821 | pr_err("%s: %s: awake failed (%d), fallback to full init\n", |
| 2822 | mmc_hostname(host), __func__, err); |
| 2823 | } |
| 2824 | |
| 2825 | if (err) |
| 2826 | err = mmc_init_card(host, host->card->ocr, host->card); |
| 2827 | |
Sahitya Tummala | ace0684 | 2014-12-09 23:23:25 +0200 | [diff] [blame] | 2828 | if (err) { |
| 2829 | pr_err("%s: MMC card re-init failed rc = %d (retries = %d)\n", |
| 2830 | mmc_hostname(host), err, retries); |
| 2831 | retries--; |
| 2832 | mmc_power_off(host); |
| 2833 | usleep_range(5000, 5500); |
| 2834 | mmc_power_up(host, host->card->ocr); |
| 2835 | mmc_select_voltage(host, host->card->ocr); |
| 2836 | continue; |
| 2837 | } |
| 2838 | break; |
| 2839 | } |
Konstantin Dorfman | 41834d6 | 2015-06-22 12:11:12 +0300 | [diff] [blame] | 2840 | if (!err && mmc_card_cmdq(host->card)) { |
| 2841 | err = mmc_cmdq_halt(host, false); |
| 2842 | if (err) |
| 2843 | pr_err("%s: un-halt: failed: %d\n", __func__, err); |
| 2844 | } |
Ulf Hansson | 9ec775f | 2013-10-02 17:37:09 +0200 | [diff] [blame] | 2845 | mmc_card_clr_suspended(host->card); |
Pierre Ossman | 2986d0b | 2007-07-22 17:52:06 +0200 | [diff] [blame] | 2846 | |
Ulf Hansson | 9ec775f | 2013-10-02 17:37:09 +0200 | [diff] [blame] | 2847 | mmc_release_host(host); |
Sujit Reddy Thumma | cb18d85 | 2014-12-04 09:57:23 +0200 | [diff] [blame] | 2848 | |
Talel Shenhar | 999102c | 2015-09-06 16:38:42 +0300 | [diff] [blame] | 2849 | err = mmc_resume_clk_scaling(host); |
| 2850 | if (err) |
| 2851 | pr_err("%s: %s: fail to resume clock scaling (%d)\n", |
| 2852 | mmc_hostname(host), __func__, err); |
Sujit Reddy Thumma | cb18d85 | 2014-12-04 09:57:23 +0200 | [diff] [blame] | 2853 | |
| 2854 | out: |
Nicolas Pitre | 95cdfb7 | 2009-09-22 16:45:29 -0700 | [diff] [blame] | 2855 | return err; |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 2856 | } |
| 2857 | |
Ulf Hansson | 9ec775f | 2013-10-02 17:37:09 +0200 | [diff] [blame] | 2858 | /* |
Ulf Hansson | 0cb403a | 2013-10-10 14:20:05 +0200 | [diff] [blame] | 2859 | * Callback for resume. |
| 2860 | */ |
| 2861 | static int mmc_resume(struct mmc_host *host) |
| 2862 | { |
Sayali Lokhande | 686b42a | 2016-12-12 08:48:37 +0530 | [diff] [blame] | 2863 | int err = 0; |
| 2864 | |
| 2865 | MMC_TRACE(host, "%s: Enter\n", __func__); |
Ulf Hansson | 0cb403a | 2013-10-10 14:20:05 +0200 | [diff] [blame] | 2866 | pm_runtime_enable(&host->card->dev); |
Konstantin Dorfman | 892f84e | 2015-02-12 13:37:56 +0200 | [diff] [blame] | 2867 | |
Sayali Lokhande | 686b42a | 2016-12-12 08:48:37 +0530 | [diff] [blame] | 2868 | MMC_TRACE(host, "%s: Exit err: %d\n", __func__, err); |
Ulf Hansson | c29536e | 2015-11-05 16:01:32 +0100 | [diff] [blame] | 2869 | return 0; |
Ulf Hansson | 0cb403a | 2013-10-10 14:20:05 +0200 | [diff] [blame] | 2870 | } |
| 2871 | |
Konstantin Dorfman | 56380b1 | 2015-12-31 14:45:48 +0200 | [diff] [blame] | 2872 | #define MAX_DEFER_SUSPEND_COUNTER 20 |
| 2873 | static bool mmc_process_bkops(struct mmc_host *host) |
| 2874 | { |
| 2875 | int err = 0; |
| 2876 | bool is_running = false; |
| 2877 | u32 status; |
| 2878 | |
| 2879 | mmc_claim_host(host); |
| 2880 | if (mmc_card_cmdq(host->card)) { |
| 2881 | BUG_ON(host->cmdq_ctx.active_reqs); |
| 2882 | |
| 2883 | err = mmc_cmdq_halt(host, true); |
| 2884 | if (err) { |
| 2885 | pr_err("%s: halt: failed: %d\n", __func__, err); |
| 2886 | goto unhalt; |
| 2887 | } |
| 2888 | } |
| 2889 | |
| 2890 | if (mmc_card_doing_bkops(host->card)) { |
| 2891 | /* check that manual bkops finished */ |
| 2892 | err = mmc_send_status(host->card, &status); |
| 2893 | if (err) { |
| 2894 | pr_err("%s: Get card status fail\n", __func__); |
| 2895 | goto unhalt; |
| 2896 | } |
| 2897 | if (R1_CURRENT_STATE(status) != R1_STATE_PRG) { |
| 2898 | mmc_card_clr_doing_bkops(host->card); |
| 2899 | goto unhalt; |
| 2900 | } |
| 2901 | } else { |
| 2902 | mmc_check_bkops(host->card); |
| 2903 | } |
| 2904 | |
| 2905 | if (host->card->bkops.needs_bkops && |
| 2906 | !mmc_card_support_auto_bkops(host->card)) |
| 2907 | mmc_start_manual_bkops(host->card); |
| 2908 | |
| 2909 | unhalt: |
| 2910 | if (mmc_card_cmdq(host->card)) { |
| 2911 | err = mmc_cmdq_halt(host, false); |
| 2912 | if (err) |
| 2913 | pr_err("%s: unhalt: failed: %d\n", __func__, err); |
| 2914 | } |
| 2915 | mmc_release_host(host); |
| 2916 | |
| 2917 | if (host->card->bkops.needs_bkops || |
| 2918 | mmc_card_doing_bkops(host->card)) { |
| 2919 | if (host->card->bkops.retry_counter++ < |
| 2920 | MAX_DEFER_SUSPEND_COUNTER) { |
| 2921 | host->card->bkops.needs_check = true; |
| 2922 | is_running = true; |
| 2923 | } else { |
| 2924 | host->card->bkops.retry_counter = 0; |
| 2925 | } |
| 2926 | } |
| 2927 | return is_running; |
| 2928 | } |
| 2929 | |
Ulf Hansson | 0cb403a | 2013-10-10 14:20:05 +0200 | [diff] [blame] | 2930 | /* |
Ulf Hansson | c4d770d | 2013-05-02 14:02:39 +0200 | [diff] [blame] | 2931 | * Callback for runtime_suspend. |
| 2932 | */ |
| 2933 | static int mmc_runtime_suspend(struct mmc_host *host) |
| 2934 | { |
| 2935 | int err; |
Konstantin Dorfman | 892f84e | 2015-02-12 13:37:56 +0200 | [diff] [blame] | 2936 | ktime_t start = ktime_get(); |
Ulf Hansson | c4d770d | 2013-05-02 14:02:39 +0200 | [diff] [blame] | 2937 | |
| 2938 | if (!(host->caps & MMC_CAP_AGGRESSIVE_PM)) |
| 2939 | return 0; |
| 2940 | |
Konstantin Dorfman | 56380b1 | 2015-12-31 14:45:48 +0200 | [diff] [blame] | 2941 | if (mmc_process_bkops(host)) { |
| 2942 | pm_runtime_mark_last_busy(&host->card->dev); |
| 2943 | pr_debug("%s: defered, need bkops\n", __func__); |
| 2944 | return -EBUSY; |
| 2945 | } |
| 2946 | |
Siba Prasad | 0196fe4 | 2017-06-27 15:13:27 +0530 | [diff] [blame] | 2947 | MMC_TRACE(host, "%s\n", __func__); |
Ulf Hansson | 0cb403a | 2013-10-10 14:20:05 +0200 | [diff] [blame] | 2948 | err = _mmc_suspend(host, true); |
Ulf Hansson | 0cc81a8 | 2013-10-03 11:24:44 +0200 | [diff] [blame] | 2949 | if (err) |
Masanari Iida | f42cf8d | 2015-02-24 23:11:26 +0900 | [diff] [blame] | 2950 | pr_err("%s: error %d doing aggressive suspend\n", |
Ulf Hansson | c4d770d | 2013-05-02 14:02:39 +0200 | [diff] [blame] | 2951 | mmc_hostname(host), err); |
Ulf Hansson | c4d770d | 2013-05-02 14:02:39 +0200 | [diff] [blame] | 2952 | |
Konstantin Dorfman | 892f84e | 2015-02-12 13:37:56 +0200 | [diff] [blame] | 2953 | trace_mmc_runtime_suspend(mmc_hostname(host), err, |
| 2954 | ktime_to_us(ktime_sub(ktime_get(), start))); |
Ulf Hansson | c4d770d | 2013-05-02 14:02:39 +0200 | [diff] [blame] | 2955 | return err; |
| 2956 | } |
| 2957 | |
| 2958 | /* |
| 2959 | * Callback for runtime_resume. |
| 2960 | */ |
| 2961 | static int mmc_runtime_resume(struct mmc_host *host) |
| 2962 | { |
| 2963 | int err; |
Konstantin Dorfman | 892f84e | 2015-02-12 13:37:56 +0200 | [diff] [blame] | 2964 | ktime_t start = ktime_get(); |
Ulf Hansson | c4d770d | 2013-05-02 14:02:39 +0200 | [diff] [blame] | 2965 | |
Siba Prasad | 0196fe4 | 2017-06-27 15:13:27 +0530 | [diff] [blame] | 2966 | MMC_TRACE(host, "%s\n", __func__); |
Ulf Hansson | 0cb403a | 2013-10-10 14:20:05 +0200 | [diff] [blame] | 2967 | err = _mmc_resume(host); |
Adrian Hunter | 520322d | 2015-12-14 15:51:27 +0200 | [diff] [blame] | 2968 | if (err && err != -ENOMEDIUM) |
Ulf Hansson | c29536e | 2015-11-05 16:01:32 +0100 | [diff] [blame] | 2969 | pr_err("%s: error %d doing runtime resume\n", |
Ulf Hansson | c4d770d | 2013-05-02 14:02:39 +0200 | [diff] [blame] | 2970 | mmc_hostname(host), err); |
| 2971 | |
Konstantin Dorfman | 892f84e | 2015-02-12 13:37:56 +0200 | [diff] [blame] | 2972 | trace_mmc_runtime_resume(mmc_hostname(host), err, |
| 2973 | ktime_to_us(ktime_sub(ktime_get(), start))); |
| 2974 | |
Konstantin Dorfman | 41834d6 | 2015-06-22 12:11:12 +0300 | [diff] [blame] | 2975 | return err; |
Ulf Hansson | c4d770d | 2013-05-02 14:02:39 +0200 | [diff] [blame] | 2976 | } |
| 2977 | |
Johan Rudholm | f855a37 | 2015-01-12 15:38:05 +0100 | [diff] [blame] | 2978 | int mmc_can_reset(struct mmc_card *card) |
| 2979 | { |
| 2980 | u8 rst_n_function; |
| 2981 | |
| 2982 | rst_n_function = card->ext_csd.rst_n_function; |
| 2983 | if ((rst_n_function & EXT_CSD_RST_N_EN_MASK) != EXT_CSD_RST_N_ENABLED) |
| 2984 | return 0; |
| 2985 | return 1; |
| 2986 | } |
| 2987 | EXPORT_SYMBOL(mmc_can_reset); |
| 2988 | |
| 2989 | static int mmc_reset(struct mmc_host *host) |
| 2990 | { |
| 2991 | struct mmc_card *card = host->card; |
Sayali Lokhande | b263703 | 2017-04-24 13:40:50 +0530 | [diff] [blame] | 2992 | int ret; |
Johan Rudholm | f855a37 | 2015-01-12 15:38:05 +0100 | [diff] [blame] | 2993 | |
Adrian Hunter | 437db4c | 2016-05-04 10:38:21 +0300 | [diff] [blame] | 2994 | /* |
| 2995 | * In the case of recovery, we can't expect flushing the cache to work |
| 2996 | * always, but we have a go and ignore errors. |
| 2997 | */ |
| 2998 | mmc_flush_cache(host->card); |
| 2999 | |
Gwendal Grignou | 4e6c717 | 2016-04-01 16:04:22 -0700 | [diff] [blame] | 3000 | if ((host->caps & MMC_CAP_HW_RESET) && host->ops->hw_reset && |
| 3001 | mmc_can_reset(card)) { |
Subhash Jadavani | dff3126 | 2016-04-19 16:21:16 -0700 | [diff] [blame] | 3002 | mmc_host_clk_hold(host); |
Gwendal Grignou | 4e6c717 | 2016-04-01 16:04:22 -0700 | [diff] [blame] | 3003 | /* If the card accept RST_n signal, send it. */ |
| 3004 | mmc_set_clock(host, host->f_init); |
| 3005 | host->ops->hw_reset(host); |
| 3006 | /* Set initial state and call mmc_set_ios */ |
| 3007 | mmc_set_initial_state(host); |
Subhash Jadavani | dff3126 | 2016-04-19 16:21:16 -0700 | [diff] [blame] | 3008 | mmc_host_clk_release(host); |
Gwendal Grignou | 4e6c717 | 2016-04-01 16:04:22 -0700 | [diff] [blame] | 3009 | } else { |
| 3010 | /* Do a brute force power cycle */ |
| 3011 | mmc_power_cycle(host, card->ocr); |
| 3012 | } |
Sayali Lokhande | b263703 | 2017-04-24 13:40:50 +0530 | [diff] [blame] | 3013 | |
| 3014 | /* Suspend clk scaling to avoid switching frequencies intermittently */ |
| 3015 | |
| 3016 | ret = mmc_suspend_clk_scaling(host); |
| 3017 | if (ret) { |
| 3018 | pr_err("%s: %s: fail to suspend clock scaling (%d)\n", |
| 3019 | mmc_hostname(host), __func__, ret); |
| 3020 | return ret; |
| 3021 | } |
| 3022 | |
| 3023 | ret = mmc_init_card(host, host->card->ocr, host->card); |
| 3024 | if (ret) { |
| 3025 | pr_err("%s: %s: mmc_init_card failed (%d)\n", |
| 3026 | mmc_hostname(host), __func__, ret); |
| 3027 | return ret; |
| 3028 | } |
| 3029 | |
| 3030 | ret = mmc_resume_clk_scaling(host); |
| 3031 | if (ret) |
| 3032 | pr_err("%s: %s: fail to resume clock scaling (%d)\n", |
| 3033 | mmc_hostname(host), __func__, ret); |
| 3034 | |
| 3035 | return ret; |
Johan Rudholm | f855a37 | 2015-01-12 15:38:05 +0100 | [diff] [blame] | 3036 | } |
| 3037 | |
Vijay Viswanath | 7f5e93a | 2017-05-16 10:34:21 +0530 | [diff] [blame] | 3038 | static int mmc_shutdown(struct mmc_host *host) |
| 3039 | { |
| 3040 | struct mmc_card *card = host->card; |
| 3041 | |
| 3042 | /* |
| 3043 | * Exit clock scaling so that it doesn't kick in after |
| 3044 | * power off notification is sent |
| 3045 | */ |
| 3046 | if (host->caps2 & MMC_CAP2_CLK_SCALE) |
| 3047 | mmc_exit_clk_scaling(card->host); |
| 3048 | /* send power off notification */ |
| 3049 | if (mmc_card_mmc(card)) |
| 3050 | mmc_send_pon(card); |
| 3051 | return 0; |
| 3052 | } |
| 3053 | |
Adrian Hunter | 9feae24 | 2009-09-22 16:44:32 -0700 | [diff] [blame] | 3054 | static const struct mmc_bus_ops mmc_ops = { |
| 3055 | .remove = mmc_remove, |
| 3056 | .detect = mmc_detect, |
Adrian Hunter | 9feae24 | 2009-09-22 16:44:32 -0700 | [diff] [blame] | 3057 | .suspend = mmc_suspend, |
| 3058 | .resume = mmc_resume, |
Ulf Hansson | c4d770d | 2013-05-02 14:02:39 +0200 | [diff] [blame] | 3059 | .runtime_suspend = mmc_runtime_suspend, |
| 3060 | .runtime_resume = mmc_runtime_resume, |
Adrian Hunter | d304950 | 2011-11-28 16:22:00 +0200 | [diff] [blame] | 3061 | .alive = mmc_alive, |
Sujit Reddy Thumma | 7095b8e | 2014-12-03 09:22:39 +0200 | [diff] [blame] | 3062 | .change_bus_speed = mmc_change_bus_speed, |
Johan Rudholm | f855a37 | 2015-01-12 15:38:05 +0100 | [diff] [blame] | 3063 | .reset = mmc_reset, |
Vijay Viswanath | 7f5e93a | 2017-05-16 10:34:21 +0530 | [diff] [blame] | 3064 | .shutdown = mmc_shutdown, |
Adrian Hunter | 9feae24 | 2009-09-22 16:44:32 -0700 | [diff] [blame] | 3065 | }; |
| 3066 | |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 3067 | /* |
| 3068 | * Starting point for MMC card init. |
| 3069 | */ |
Andy Ross | 807e8e4 | 2011-01-03 10:36:56 -0800 | [diff] [blame] | 3070 | int mmc_attach_mmc(struct mmc_host *host) |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 3071 | { |
| 3072 | int err; |
Ulf Hansson | 6904115 | 2013-09-13 11:31:33 +0200 | [diff] [blame] | 3073 | u32 ocr, rocr; |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 3074 | |
| 3075 | BUG_ON(!host); |
Pierre Ossman | d84075c8 | 2007-08-09 13:23:56 +0200 | [diff] [blame] | 3076 | WARN_ON(!host->claimed); |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 3077 | |
Stefan Nilsson XK | 4466903 | 2011-09-15 17:50:38 +0200 | [diff] [blame] | 3078 | /* Set correct bus mode for MMC before attempting attach */ |
| 3079 | if (!mmc_host_is_spi(host)) |
| 3080 | mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); |
| 3081 | |
Andy Ross | 807e8e4 | 2011-01-03 10:36:56 -0800 | [diff] [blame] | 3082 | err = mmc_send_op_cond(host, 0, &ocr); |
| 3083 | if (err) |
| 3084 | return err; |
| 3085 | |
Ulf Hansson | 2501c91 | 2013-10-30 01:00:18 +0100 | [diff] [blame] | 3086 | mmc_attach_bus(host, &mmc_ops); |
Takashi Iwai | 8f230f4 | 2010-12-08 10:04:30 +0100 | [diff] [blame] | 3087 | if (host->ocr_avail_mmc) |
| 3088 | host->ocr_avail = host->ocr_avail_mmc; |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 3089 | |
| 3090 | /* |
David Brownell | af51715 | 2007-08-08 09:11:32 -0700 | [diff] [blame] | 3091 | * We need to get OCR a different way for SPI. |
| 3092 | */ |
| 3093 | if (mmc_host_is_spi(host)) { |
| 3094 | err = mmc_spi_read_ocr(host, 1, &ocr); |
| 3095 | if (err) |
| 3096 | goto err; |
| 3097 | } |
| 3098 | |
Ulf Hansson | 6904115 | 2013-09-13 11:31:33 +0200 | [diff] [blame] | 3099 | rocr = mmc_select_voltage(host, ocr); |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 3100 | |
| 3101 | /* |
| 3102 | * Can we support the voltage of the card? |
| 3103 | */ |
Ulf Hansson | 6904115 | 2013-09-13 11:31:33 +0200 | [diff] [blame] | 3104 | if (!rocr) { |
Pierre Ossman | 109b5be | 2007-07-23 00:12:10 +0200 | [diff] [blame] | 3105 | err = -EINVAL; |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 3106 | goto err; |
Pierre Ossman | 109b5be | 2007-07-23 00:12:10 +0200 | [diff] [blame] | 3107 | } |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 3108 | |
| 3109 | /* |
| 3110 | * Detect and init the card. |
| 3111 | */ |
Ulf Hansson | 6904115 | 2013-09-13 11:31:33 +0200 | [diff] [blame] | 3112 | err = mmc_init_card(host, rocr, NULL); |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 3113 | if (err) |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 3114 | goto err; |
| 3115 | |
| 3116 | mmc_release_host(host); |
Pierre Ossman | 4101c16 | 2007-05-19 13:39:01 +0200 | [diff] [blame] | 3117 | err = mmc_add_card(host->card); |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 3118 | if (err) |
Pierre Ossman | 2986d0b | 2007-07-22 17:52:06 +0200 | [diff] [blame] | 3119 | goto remove_card; |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 3120 | |
Sergei Shtylyov | 2860d06 | 2015-10-14 23:53:03 +0300 | [diff] [blame] | 3121 | mmc_claim_host(host); |
Talel Shenhar | 999102c | 2015-09-06 16:38:42 +0300 | [diff] [blame] | 3122 | err = mmc_init_clk_scaling(host); |
| 3123 | if (err) { |
| 3124 | mmc_release_host(host); |
| 3125 | goto remove_card; |
| 3126 | } |
Tatyana Brokhman | 4fbb0bf | 2014-12-04 22:03:42 +0200 | [diff] [blame] | 3127 | |
| 3128 | register_reboot_notifier(&host->card->reboot_notify); |
| 3129 | |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 3130 | return 0; |
| 3131 | |
Pierre Ossman | 2986d0b | 2007-07-22 17:52:06 +0200 | [diff] [blame] | 3132 | remove_card: |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 3133 | mmc_remove_card(host->card); |
Pierre Ossman | 2986d0b | 2007-07-22 17:52:06 +0200 | [diff] [blame] | 3134 | mmc_claim_host(host); |
Andy Ross | 807e8e4 | 2011-01-03 10:36:56 -0800 | [diff] [blame] | 3135 | host->card = NULL; |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 3136 | err: |
| 3137 | mmc_detach_bus(host); |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 3138 | |
Girish K S | a3c76eb | 2011-10-11 11:44:09 +0530 | [diff] [blame] | 3139 | pr_err("%s: error %d whilst initialising MMC card\n", |
Pierre Ossman | 109b5be | 2007-07-23 00:12:10 +0200 | [diff] [blame] | 3140 | mmc_hostname(host), err); |
| 3141 | |
Pierre Ossman | adf66a0 | 2007-07-22 23:08:30 +0200 | [diff] [blame] | 3142 | return err; |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 3143 | } |