blob: b3fa193de846d957b9ae3d5ac99e244496825e12 [file] [log] [blame]
Thomas Gleixnerd2912cb2019-06-04 10:11:33 +02001// SPDX-License-Identifier: GPL-2.0-only
Pierre Ossman7ea239d2006-12-31 00:11:32 +01002/*
Pierre Ossman70f10482007-07-11 20:04:50 +02003 * linux/drivers/mmc/core/mmc.c
Pierre Ossman7ea239d2006-12-31 00:11:32 +01004 *
5 * Copyright (C) 2003-2004 Russell King, All Rights Reserved.
6 * Copyright (C) 2005-2007 Pierre Ossman, All Rights Reserved.
7 * MMCv4 support Copyright (C) 2006 Philip Langdale, All Rights Reserved.
Pierre Ossman7ea239d2006-12-31 00:11:32 +01008 */
9
10#include <linux/err.h>
Hans de Goede81f8a7b2015-04-01 17:26:23 +020011#include <linux/of.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090012#include <linux/slab.h>
Paul Gortmaker0205a902011-07-15 12:01:27 -040013#include <linux/stat.h>
Ulf Hansson0cb403a2013-10-10 14:20:05 +020014#include <linux/pm_runtime.h>
Pierre Ossman7ea239d2006-12-31 00:11:32 +010015
16#include <linux/mmc/host.h>
17#include <linux/mmc/card.h>
18#include <linux/mmc/mmc.h>
19
20#include "core.h"
Ulf Hansson4facdde2017-01-13 14:14:14 +010021#include "card.h"
Adrian Hunter436f8da2015-05-07 13:10:18 +030022#include "host.h"
Pierre Ossman4101c162007-05-19 13:39:01 +020023#include "bus.h"
Pierre Ossman7ea239d2006-12-31 00:11:32 +010024#include "mmc_ops.h"
Shawn Lin28fc64a2017-02-15 16:35:28 +080025#include "quirks.h"
Philip Rakity4c4cb172011-05-13 11:17:18 +053026#include "sd_ops.h"
Ulf Hansson52c82122017-05-08 23:52:04 +020027#include "pwrseq.h"
Pierre Ossman7ea239d2006-12-31 00:11:32 +010028
Ulf Hanssonfe1b5702016-11-04 18:32:33 +010029#define DEFAULT_CMD6_TIMEOUT_MS 500
Ulf Hanssone3ae3402018-12-10 17:52:38 +010030#define MIN_CACHE_EN_TIMEOUT_MS 1600
Ulf Hanssonfe1b5702016-11-04 18:32:33 +010031
Pierre Ossman7ea239d2006-12-31 00:11:32 +010032static const unsigned int tran_exp[] = {
33 10000, 100000, 1000000, 10000000,
34 0, 0, 0, 0
35};
36
37static const unsigned char tran_mant[] = {
38 0, 10, 12, 13, 15, 20, 25, 30,
39 35, 40, 45, 50, 55, 60, 70, 80,
40};
41
Shawn Lin4406ae22017-08-02 11:12:42 +080042static const unsigned int taac_exp[] = {
Pierre Ossman7ea239d2006-12-31 00:11:32 +010043 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000,
44};
45
Shawn Lin4406ae22017-08-02 11:12:42 +080046static const unsigned int taac_mant[] = {
Pierre Ossman7ea239d2006-12-31 00:11:32 +010047 0, 10, 12, 13, 15, 20, 25, 30,
48 35, 40, 45, 50, 55, 60, 70, 80,
49};
50
51#define UNSTUFF_BITS(resp,start,size) \
52 ({ \
53 const int __size = size; \
54 const u32 __mask = (__size < 32 ? 1 << __size : 0) - 1; \
55 const int __off = 3 - ((start) / 32); \
56 const int __shft = (start) & 31; \
57 u32 __res; \
58 \
59 __res = resp[__off] >> __shft; \
60 if (__size + __shft > 32) \
61 __res |= resp[__off-1] << ((32 - __shft) % 32); \
62 __res & __mask; \
63 })
64
65/*
66 * Given the decoded CSD structure, decode the raw CID to our CID structure.
67 */
Pierre Ossmanbd766312007-05-01 16:11:57 +020068static int mmc_decode_cid(struct mmc_card *card)
Pierre Ossman7ea239d2006-12-31 00:11:32 +010069{
70 u32 *resp = card->raw_cid;
71
72 /*
73 * The selection of the format here is based upon published
74 * specs from sandisk and from what people have reported.
75 */
76 switch (card->csd.mmca_vsn) {
77 case 0: /* MMC v1.0 - v1.2 */
78 case 1: /* MMC v1.4 */
79 card->cid.manfid = UNSTUFF_BITS(resp, 104, 24);
80 card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8);
81 card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8);
82 card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8);
83 card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8);
84 card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8);
85 card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8);
86 card->cid.prod_name[6] = UNSTUFF_BITS(resp, 48, 8);
87 card->cid.hwrev = UNSTUFF_BITS(resp, 44, 4);
88 card->cid.fwrev = UNSTUFF_BITS(resp, 40, 4);
89 card->cid.serial = UNSTUFF_BITS(resp, 16, 24);
90 card->cid.month = UNSTUFF_BITS(resp, 12, 4);
91 card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997;
92 break;
93
94 case 2: /* MMC v2.0 - v2.2 */
95 case 3: /* MMC v3.1 - v3.3 */
96 case 4: /* MMC v4 */
97 card->cid.manfid = UNSTUFF_BITS(resp, 120, 8);
98 card->cid.oemid = UNSTUFF_BITS(resp, 104, 16);
99 card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8);
100 card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8);
101 card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8);
102 card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8);
103 card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8);
104 card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8);
Bernie Thompson51e7e8b2013-02-27 12:19:17 -0800105 card->cid.prv = UNSTUFF_BITS(resp, 48, 8);
Pierre Ossman7ea239d2006-12-31 00:11:32 +0100106 card->cid.serial = UNSTUFF_BITS(resp, 16, 32);
107 card->cid.month = UNSTUFF_BITS(resp, 12, 4);
108 card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997;
109 break;
110
111 default:
Girish K Sa3c76eb2011-10-11 11:44:09 +0530112 pr_err("%s: card has unknown MMCA version %d\n",
Pierre Ossman7ea239d2006-12-31 00:11:32 +0100113 mmc_hostname(card->host), card->csd.mmca_vsn);
Pierre Ossmanbd766312007-05-01 16:11:57 +0200114 return -EINVAL;
Pierre Ossman7ea239d2006-12-31 00:11:32 +0100115 }
Pierre Ossmanbd766312007-05-01 16:11:57 +0200116
117 return 0;
Pierre Ossman7ea239d2006-12-31 00:11:32 +0100118}
119
Adrian Hunterdfe86cb2010-08-11 14:17:46 -0700120static void mmc_set_erase_size(struct mmc_card *card)
121{
122 if (card->ext_csd.erase_group_def & 1)
123 card->erase_size = card->ext_csd.hc_erase_size;
124 else
125 card->erase_size = card->csd.erase_size;
126
127 mmc_init_erase(card);
128}
129
Pierre Ossman7ea239d2006-12-31 00:11:32 +0100130/*
131 * Given a 128-bit response, decode to our card CSD structure.
132 */
Pierre Ossmanbd766312007-05-01 16:11:57 +0200133static int mmc_decode_csd(struct mmc_card *card)
Pierre Ossman7ea239d2006-12-31 00:11:32 +0100134{
135 struct mmc_csd *csd = &card->csd;
Adrian Hunterdfe86cb2010-08-11 14:17:46 -0700136 unsigned int e, m, a, b;
Pierre Ossman7ea239d2006-12-31 00:11:32 +0100137 u32 *resp = card->raw_csd;
138
139 /*
140 * We only understand CSD structure v1.1 and v1.2.
141 * v1.2 has extra information in bits 15, 11 and 10.
Kyungmin Park6da24b72010-08-10 18:01:36 -0700142 * We also support eMMC v4.4 & v4.41.
Pierre Ossman7ea239d2006-12-31 00:11:32 +0100143 */
Kyungmin Park6da24b72010-08-10 18:01:36 -0700144 csd->structure = UNSTUFF_BITS(resp, 126, 2);
145 if (csd->structure == 0) {
Girish K Sa3c76eb2011-10-11 11:44:09 +0530146 pr_err("%s: unrecognised CSD structure version %d\n",
Kyungmin Park6da24b72010-08-10 18:01:36 -0700147 mmc_hostname(card->host), csd->structure);
Pierre Ossmanbd766312007-05-01 16:11:57 +0200148 return -EINVAL;
Pierre Ossman7ea239d2006-12-31 00:11:32 +0100149 }
150
151 csd->mmca_vsn = UNSTUFF_BITS(resp, 122, 4);
152 m = UNSTUFF_BITS(resp, 115, 4);
153 e = UNSTUFF_BITS(resp, 112, 3);
Shawn Lin4406ae22017-08-02 11:12:42 +0800154 csd->taac_ns = (taac_exp[e] * taac_mant[m] + 9) / 10;
155 csd->taac_clks = UNSTUFF_BITS(resp, 104, 8) * 100;
Pierre Ossman7ea239d2006-12-31 00:11:32 +0100156
157 m = UNSTUFF_BITS(resp, 99, 4);
158 e = UNSTUFF_BITS(resp, 96, 3);
159 csd->max_dtr = tran_exp[e] * tran_mant[m];
160 csd->cmdclass = UNSTUFF_BITS(resp, 84, 12);
161
162 e = UNSTUFF_BITS(resp, 47, 3);
163 m = UNSTUFF_BITS(resp, 62, 12);
164 csd->capacity = (1 + m) << (e + 2);
165
166 csd->read_blkbits = UNSTUFF_BITS(resp, 80, 4);
167 csd->read_partial = UNSTUFF_BITS(resp, 79, 1);
168 csd->write_misalign = UNSTUFF_BITS(resp, 78, 1);
169 csd->read_misalign = UNSTUFF_BITS(resp, 77, 1);
Sascha Hauer3d705d12014-08-19 10:45:51 +0200170 csd->dsr_imp = UNSTUFF_BITS(resp, 76, 1);
Pierre Ossman7ea239d2006-12-31 00:11:32 +0100171 csd->r2w_factor = UNSTUFF_BITS(resp, 26, 3);
172 csd->write_blkbits = UNSTUFF_BITS(resp, 22, 4);
173 csd->write_partial = UNSTUFF_BITS(resp, 21, 1);
Pierre Ossmanbd766312007-05-01 16:11:57 +0200174
Adrian Hunterdfe86cb2010-08-11 14:17:46 -0700175 if (csd->write_blkbits >= 9) {
176 a = UNSTUFF_BITS(resp, 42, 5);
177 b = UNSTUFF_BITS(resp, 37, 5);
178 csd->erase_size = (a + 1) * (b + 1);
179 csd->erase_size <<= csd->write_blkbits - 9;
180 }
181
Pierre Ossmanbd766312007-05-01 16:11:57 +0200182 return 0;
Pierre Ossman7ea239d2006-12-31 00:11:32 +0100183}
184
Seungwon Jeon96cf5f02012-04-25 16:17:37 +0900185static void mmc_select_card_type(struct mmc_card *card)
186{
187 struct mmc_host *host = card->host;
Seungwon Jeon0a5b6432014-04-23 17:14:58 +0900188 u8 card_type = card->ext_csd.raw_card_type;
Lee Jones5f1a4dd2012-11-14 12:35:51 +0000189 u32 caps = host->caps, caps2 = host->caps2;
Seungwon Jeon577fb132014-04-23 17:08:44 +0900190 unsigned int hs_max_dtr = 0, hs200_max_dtr = 0;
Seungwon Jeon2415c0e2014-04-23 17:07:58 +0900191 unsigned int avail_type = 0;
Seungwon Jeon96cf5f02012-04-25 16:17:37 +0900192
193 if (caps & MMC_CAP_MMC_HIGHSPEED &&
Seungwon Jeon2415c0e2014-04-23 17:07:58 +0900194 card_type & EXT_CSD_CARD_TYPE_HS_26) {
195 hs_max_dtr = MMC_HIGH_26_MAX_DTR;
196 avail_type |= EXT_CSD_CARD_TYPE_HS_26;
197 }
198
199 if (caps & MMC_CAP_MMC_HIGHSPEED &&
200 card_type & EXT_CSD_CARD_TYPE_HS_52) {
Seungwon Jeon96cf5f02012-04-25 16:17:37 +0900201 hs_max_dtr = MMC_HIGH_52_MAX_DTR;
Seungwon Jeon2415c0e2014-04-23 17:07:58 +0900202 avail_type |= EXT_CSD_CARD_TYPE_HS_52;
203 }
Seungwon Jeon96cf5f02012-04-25 16:17:37 +0900204
Ulf Hansson20f921b2017-01-25 12:04:17 +0100205 if (caps & (MMC_CAP_1_8V_DDR | MMC_CAP_3_3V_DDR) &&
Seungwon Jeon2415c0e2014-04-23 17:07:58 +0900206 card_type & EXT_CSD_CARD_TYPE_DDR_1_8V) {
Seungwon Jeon96cf5f02012-04-25 16:17:37 +0900207 hs_max_dtr = MMC_HIGH_DDR_MAX_DTR;
Seungwon Jeon2415c0e2014-04-23 17:07:58 +0900208 avail_type |= EXT_CSD_CARD_TYPE_DDR_1_8V;
209 }
Seungwon Jeon96cf5f02012-04-25 16:17:37 +0900210
Seungwon Jeon2415c0e2014-04-23 17:07:58 +0900211 if (caps & MMC_CAP_1_2V_DDR &&
212 card_type & EXT_CSD_CARD_TYPE_DDR_1_2V) {
213 hs_max_dtr = MMC_HIGH_DDR_MAX_DTR;
214 avail_type |= EXT_CSD_CARD_TYPE_DDR_1_2V;
215 }
216
217 if (caps2 & MMC_CAP2_HS200_1_8V_SDR &&
218 card_type & EXT_CSD_CARD_TYPE_HS200_1_8V) {
Seungwon Jeon577fb132014-04-23 17:08:44 +0900219 hs200_max_dtr = MMC_HS200_MAX_DTR;
Seungwon Jeon2415c0e2014-04-23 17:07:58 +0900220 avail_type |= EXT_CSD_CARD_TYPE_HS200_1_8V;
221 }
222
223 if (caps2 & MMC_CAP2_HS200_1_2V_SDR &&
224 card_type & EXT_CSD_CARD_TYPE_HS200_1_2V) {
Seungwon Jeon577fb132014-04-23 17:08:44 +0900225 hs200_max_dtr = MMC_HS200_MAX_DTR;
Seungwon Jeon2415c0e2014-04-23 17:07:58 +0900226 avail_type |= EXT_CSD_CARD_TYPE_HS200_1_2V;
227 }
Seungwon Jeon96cf5f02012-04-25 16:17:37 +0900228
Seungwon Jeon0a5b6432014-04-23 17:14:58 +0900229 if (caps2 & MMC_CAP2_HS400_1_8V &&
230 card_type & EXT_CSD_CARD_TYPE_HS400_1_8V) {
231 hs200_max_dtr = MMC_HS200_MAX_DTR;
232 avail_type |= EXT_CSD_CARD_TYPE_HS400_1_8V;
233 }
234
235 if (caps2 & MMC_CAP2_HS400_1_2V &&
236 card_type & EXT_CSD_CARD_TYPE_HS400_1_2V) {
237 hs200_max_dtr = MMC_HS200_MAX_DTR;
238 avail_type |= EXT_CSD_CARD_TYPE_HS400_1_2V;
239 }
240
Shawn Lin81ac2af2016-05-26 09:56:22 +0800241 if ((caps2 & MMC_CAP2_HS400_ES) &&
242 card->ext_csd.strobe_support &&
243 (avail_type & EXT_CSD_CARD_TYPE_HS400))
244 avail_type |= EXT_CSD_CARD_TYPE_HS400ES;
245
Seungwon Jeon96cf5f02012-04-25 16:17:37 +0900246 card->ext_csd.hs_max_dtr = hs_max_dtr;
Seungwon Jeon577fb132014-04-23 17:08:44 +0900247 card->ext_csd.hs200_max_dtr = hs200_max_dtr;
Seungwon Jeon2415c0e2014-04-23 17:07:58 +0900248 card->mmc_avail_type = avail_type;
Seungwon Jeon96cf5f02012-04-25 16:17:37 +0900249}
250
Grégory Soutadéb4493ee2014-09-15 17:47:06 +0200251static void mmc_manage_enhanced_area(struct mmc_card *card, u8 *ext_csd)
252{
Grégory Soutadé994324b2014-09-15 17:47:11 +0200253 u8 hc_erase_grp_sz, hc_wp_grp_sz;
254
255 /*
256 * Disable these attributes by default
257 */
258 card->ext_csd.enhanced_area_offset = -EINVAL;
259 card->ext_csd.enhanced_area_size = -EINVAL;
Grégory Soutadéb4493ee2014-09-15 17:47:06 +0200260
261 /*
262 * Enhanced area feature support -- check whether the eMMC
263 * card has the Enhanced area enabled. If so, export enhanced
264 * area offset and size to user by adding sysfs interface.
265 */
266 if ((ext_csd[EXT_CSD_PARTITION_SUPPORT] & 0x2) &&
267 (ext_csd[EXT_CSD_PARTITION_ATTRIBUTE] & 0x1)) {
Grégory Soutadé994324b2014-09-15 17:47:11 +0200268 if (card->ext_csd.partition_setting_completed) {
269 hc_erase_grp_sz =
270 ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE];
271 hc_wp_grp_sz =
272 ext_csd[EXT_CSD_HC_WP_GRP_SIZE];
Grégory Soutadéb4493ee2014-09-15 17:47:06 +0200273
Grégory Soutadé994324b2014-09-15 17:47:11 +0200274 /*
275 * calculate the enhanced data area offset, in bytes
276 */
277 card->ext_csd.enhanced_area_offset =
Kuninori Morimotoded8a5f2015-05-11 07:34:53 +0000278 (((unsigned long long)ext_csd[139]) << 24) +
279 (((unsigned long long)ext_csd[138]) << 16) +
280 (((unsigned long long)ext_csd[137]) << 8) +
281 (((unsigned long long)ext_csd[136]));
Grégory Soutadé994324b2014-09-15 17:47:11 +0200282 if (mmc_card_blockaddr(card))
283 card->ext_csd.enhanced_area_offset <<= 9;
284 /*
285 * calculate the enhanced data area size, in kilobytes
286 */
287 card->ext_csd.enhanced_area_size =
288 (ext_csd[142] << 16) + (ext_csd[141] << 8) +
289 ext_csd[140];
290 card->ext_csd.enhanced_area_size *=
291 (size_t)(hc_erase_grp_sz * hc_wp_grp_sz);
292 card->ext_csd.enhanced_area_size <<= 9;
293 } else {
294 pr_warn("%s: defines enhanced area without partition setting complete\n",
295 mmc_hostname(card->host));
296 }
Grégory Soutadéb4493ee2014-09-15 17:47:06 +0200297 }
298}
299
Bradley Bolenf3d7c222019-11-16 20:00:45 -0500300static void mmc_part_add(struct mmc_card *card, u64 size,
Ulf Hansson4facdde2017-01-13 14:14:14 +0100301 unsigned int part_cfg, char *name, int idx, bool ro,
302 int area_type)
303{
304 card->part[card->nr_parts].size = size;
305 card->part[card->nr_parts].part_cfg = part_cfg;
306 sprintf(card->part[card->nr_parts].name, name, idx);
307 card->part[card->nr_parts].force_ro = ro;
308 card->part[card->nr_parts].area_type = area_type;
309 card->nr_parts++;
310}
311
Grégory Soutadéb4493ee2014-09-15 17:47:06 +0200312static void mmc_manage_gp_partitions(struct mmc_card *card, u8 *ext_csd)
313{
Grégory Soutadéb4493ee2014-09-15 17:47:06 +0200314 int idx;
Grégory Soutadé994324b2014-09-15 17:47:11 +0200315 u8 hc_erase_grp_sz, hc_wp_grp_sz;
Bradley Bolenf3d7c222019-11-16 20:00:45 -0500316 u64 part_size;
Grégory Soutadéb4493ee2014-09-15 17:47:06 +0200317
318 /*
319 * General purpose partition feature support --
320 * If ext_csd has the size of general purpose partitions,
321 * set size, part_cfg, partition name in mmc_part.
322 */
323 if (ext_csd[EXT_CSD_PARTITION_SUPPORT] &
324 EXT_CSD_PART_SUPPORT_PART_EN) {
Grégory Soutadé994324b2014-09-15 17:47:11 +0200325 hc_erase_grp_sz =
326 ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE];
327 hc_wp_grp_sz =
328 ext_csd[EXT_CSD_HC_WP_GRP_SIZE];
Grégory Soutadéb4493ee2014-09-15 17:47:06 +0200329
330 for (idx = 0; idx < MMC_NUM_GP_PARTITION; idx++) {
331 if (!ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3] &&
332 !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] &&
333 !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2])
334 continue;
Grégory Soutadé994324b2014-09-15 17:47:11 +0200335 if (card->ext_csd.partition_setting_completed == 0) {
336 pr_warn("%s: has partition size defined without partition complete\n",
337 mmc_hostname(card->host));
338 break;
339 }
Grégory Soutadéb4493ee2014-09-15 17:47:06 +0200340 part_size =
341 (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2]
342 << 16) +
343 (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1]
344 << 8) +
345 ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3];
Bradley Bolenf3d7c222019-11-16 20:00:45 -0500346 part_size *= (hc_erase_grp_sz * hc_wp_grp_sz);
Grégory Soutadéb4493ee2014-09-15 17:47:06 +0200347 mmc_part_add(card, part_size << 19,
348 EXT_CSD_PART_CONFIG_ACC_GP0 + idx,
349 "gp%d", idx, false,
350 MMC_BLK_DATA_AREA_GP);
351 }
352 }
353}
354
Adrian Hunter1c447112016-05-05 08:12:28 +0300355/* Minimum partition switch timeout in milliseconds */
356#define MMC_MIN_PART_SWITCH_TIME 300
357
Philip Rakity08ee80cc2011-05-24 18:14:58 -0700358/*
359 * Decode extended CSD.
360 */
Ulf Hansson076ec382014-10-20 13:37:24 +0200361static int mmc_decode_ext_csd(struct mmc_card *card, u8 *ext_csd)
Philip Rakity08ee80cc2011-05-24 18:14:58 -0700362{
Namjae Jeone0c368d2011-10-06 23:41:38 +0900363 int err = 0, idx;
Bradley Bolenf3d7c222019-11-16 20:00:45 -0500364 u64 part_size;
Hans de Goede81f8a7b2015-04-01 17:26:23 +0200365 struct device_node *np;
366 bool broken_hpi = false;
Philip Rakity08ee80cc2011-05-24 18:14:58 -0700367
Kyungmin Park6da24b72010-08-10 18:01:36 -0700368 /* Version is coded in the CSD_STRUCTURE byte in the EXT_CSD register */
Philip Rakityf39b2dd92011-07-07 09:04:55 -0700369 card->ext_csd.raw_ext_csd_structure = ext_csd[EXT_CSD_STRUCTURE];
Kyungmin Park6da24b72010-08-10 18:01:36 -0700370 if (card->csd.structure == 3) {
Philip Rakityf39b2dd92011-07-07 09:04:55 -0700371 if (card->ext_csd.raw_ext_csd_structure > 2) {
Girish K Sa3c76eb2011-10-11 11:44:09 +0530372 pr_err("%s: unrecognised EXT_CSD structure "
Kyungmin Park6da24b72010-08-10 18:01:36 -0700373 "version %d\n", mmc_hostname(card->host),
Philip Rakityf39b2dd92011-07-07 09:04:55 -0700374 card->ext_csd.raw_ext_csd_structure);
Kyungmin Park6da24b72010-08-10 18:01:36 -0700375 err = -EINVAL;
376 goto out;
377 }
378 }
379
Hans de Goede81f8a7b2015-04-01 17:26:23 +0200380 np = mmc_of_find_child_device(card->host, 0);
381 if (np && of_device_is_compatible(np, "mmc-card"))
382 broken_hpi = of_property_read_bool(np, "broken-hpi");
383 of_node_put(np);
384
Romain Izard03a59432014-06-27 10:51:07 +0200385 /*
386 * The EXT_CSD format is meant to be forward compatible. As long
387 * as CSD_STRUCTURE does not change, all values for EXT_CSD_REV
388 * are authorized, see JEDEC JESD84-B50 section B.8.
389 */
Jarkko Lavinenb1ebe382009-09-22 16:44:34 -0700390 card->ext_csd.rev = ext_csd[EXT_CSD_REV];
Pierre Ossmand7604d72007-07-23 00:34:07 +0200391
Pratibhasagar V53202262016-06-09 18:09:31 -0400392 /* fixup device after ext_csd revision field is updated */
393 mmc_fixup_device(card, mmc_ext_csd_fixups);
394
Philip Rakityf39b2dd92011-07-07 09:04:55 -0700395 card->ext_csd.raw_sectors[0] = ext_csd[EXT_CSD_SEC_CNT + 0];
396 card->ext_csd.raw_sectors[1] = ext_csd[EXT_CSD_SEC_CNT + 1];
397 card->ext_csd.raw_sectors[2] = ext_csd[EXT_CSD_SEC_CNT + 2];
398 card->ext_csd.raw_sectors[3] = ext_csd[EXT_CSD_SEC_CNT + 3];
Jarkko Lavinenb1ebe382009-09-22 16:44:34 -0700399 if (card->ext_csd.rev >= 2) {
Pierre Ossmand7604d72007-07-23 00:34:07 +0200400 card->ext_csd.sectors =
401 ext_csd[EXT_CSD_SEC_CNT + 0] << 0 |
402 ext_csd[EXT_CSD_SEC_CNT + 1] << 8 |
403 ext_csd[EXT_CSD_SEC_CNT + 2] << 16 |
404 ext_csd[EXT_CSD_SEC_CNT + 3] << 24;
Hanumath Prasadfc8a0982010-08-10 18:01:45 -0700405
406 /* Cards with density > 2GiB are sector addressed */
407 if (card->ext_csd.sectors > (2u * 1024 * 1024 * 1024) / 512)
Pierre Ossmand7604d72007-07-23 00:34:07 +0200408 mmc_card_set_blockaddr(card);
409 }
Seungwon Jeon96cf5f02012-04-25 16:17:37 +0900410
Shawn Lin81ac2af2016-05-26 09:56:22 +0800411 card->ext_csd.strobe_support = ext_csd[EXT_CSD_STROBE_SUPPORT];
Philip Rakityf39b2dd92011-07-07 09:04:55 -0700412 card->ext_csd.raw_card_type = ext_csd[EXT_CSD_CARD_TYPE];
Seungwon Jeon96cf5f02012-04-25 16:17:37 +0900413 mmc_select_card_type(card);
Pierre Ossman7ea239d2006-12-31 00:11:32 +0100414
Philip Rakityf39b2dd92011-07-07 09:04:55 -0700415 card->ext_csd.raw_s_a_timeout = ext_csd[EXT_CSD_S_A_TIMEOUT];
416 card->ext_csd.raw_erase_timeout_mult =
417 ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT];
418 card->ext_csd.raw_hc_erase_grp_size =
419 ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE];
Jarkko Lavinenb1ebe382009-09-22 16:44:34 -0700420 if (card->ext_csd.rev >= 3) {
421 u8 sa_shift = ext_csd[EXT_CSD_S_A_TIMEOUT];
Andrei Warkentin371a6892011-04-11 18:10:25 -0500422 card->ext_csd.part_config = ext_csd[EXT_CSD_PART_CONFIG];
423
424 /* EXT_CSD value is in units of 10ms, but we store in ms */
425 card->ext_csd.part_time = 10 * ext_csd[EXT_CSD_PART_SWITCH_TIME];
Adrian Hunter1c447112016-05-05 08:12:28 +0300426 /* Some eMMC set the value too low so set a minimum */
427 if (card->ext_csd.part_time &&
428 card->ext_csd.part_time < MMC_MIN_PART_SWITCH_TIME)
429 card->ext_csd.part_time = MMC_MIN_PART_SWITCH_TIME;
Jarkko Lavinenb1ebe382009-09-22 16:44:34 -0700430
431 /* Sleep / awake timeout in 100ns units */
432 if (sa_shift > 0 && sa_shift <= 0x17)
433 card->ext_csd.sa_timeout =
434 1 << ext_csd[EXT_CSD_S_A_TIMEOUT];
Adrian Hunterdfe86cb2010-08-11 14:17:46 -0700435 card->ext_csd.erase_group_def =
436 ext_csd[EXT_CSD_ERASE_GROUP_DEF];
437 card->ext_csd.hc_erase_timeout = 300 *
438 ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT];
439 card->ext_csd.hc_erase_size =
440 ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] << 10;
Andrei Warkentinf4c55222011-03-31 18:40:00 -0500441
442 card->ext_csd.rel_sectors = ext_csd[EXT_CSD_REL_WR_SEC_C];
Andrei Warkentin371a6892011-04-11 18:10:25 -0500443
444 /*
445 * There are two boot regions of equal size, defined in
446 * multiples of 128K.
447 */
Namjae Jeone0c368d2011-10-06 23:41:38 +0900448 if (ext_csd[EXT_CSD_BOOT_MULT] && mmc_boot_partition_access(card->host)) {
449 for (idx = 0; idx < MMC_NUM_BOOT_PARTITION; idx++) {
450 part_size = ext_csd[EXT_CSD_BOOT_MULT] << 17;
451 mmc_part_add(card, part_size,
452 EXT_CSD_PART_CONFIG_ACC_BOOT0 + idx,
Johan Rudholmadd710e2011-12-02 08:51:06 +0100453 "boot%d", idx, true,
454 MMC_BLK_DATA_AREA_BOOT);
Namjae Jeone0c368d2011-10-06 23:41:38 +0900455 }
456 }
Jarkko Lavinenb1ebe382009-09-22 16:44:34 -0700457 }
458
Philip Rakityf39b2dd92011-07-07 09:04:55 -0700459 card->ext_csd.raw_hc_erase_gap_size =
Jurgen Heeksdd13b4e2012-02-01 13:30:55 +0100460 ext_csd[EXT_CSD_HC_WP_GRP_SIZE];
Philip Rakityf39b2dd92011-07-07 09:04:55 -0700461 card->ext_csd.raw_sec_trim_mult =
462 ext_csd[EXT_CSD_SEC_TRIM_MULT];
463 card->ext_csd.raw_sec_erase_mult =
464 ext_csd[EXT_CSD_SEC_ERASE_MULT];
465 card->ext_csd.raw_sec_feature_support =
466 ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT];
467 card->ext_csd.raw_trim_mult =
468 ext_csd[EXT_CSD_TRIM_MULT];
Philip Rakity836dc2f2013-04-04 20:18:11 +0100469 card->ext_csd.raw_partition_support = ext_csd[EXT_CSD_PARTITION_SUPPORT];
Adrian Hunterb097e072015-02-06 14:12:57 +0200470 card->ext_csd.raw_driver_strength = ext_csd[EXT_CSD_DRIVER_STRENGTH];
Adrian Hunterdfe86cb2010-08-11 14:17:46 -0700471 if (card->ext_csd.rev >= 4) {
Grégory Soutadé69803d42014-09-15 17:47:09 +0200472 if (ext_csd[EXT_CSD_PARTITION_SETTING_COMPLETED] &
473 EXT_CSD_PART_SETTING_COMPLETED)
474 card->ext_csd.partition_setting_completed = 1;
475 else
476 card->ext_csd.partition_setting_completed = 0;
477
Grégory Soutadéb4493ee2014-09-15 17:47:06 +0200478 mmc_manage_enhanced_area(card, ext_csd);
Chuanxiao Dong709de99d2011-01-22 04:09:41 +0800479
Grégory Soutadéb4493ee2014-09-15 17:47:06 +0200480 mmc_manage_gp_partitions(card, ext_csd);
Namjae Jeone0c368d2011-10-06 23:41:38 +0900481
Adrian Hunterdfe86cb2010-08-11 14:17:46 -0700482 card->ext_csd.sec_trim_mult =
483 ext_csd[EXT_CSD_SEC_TRIM_MULT];
484 card->ext_csd.sec_erase_mult =
485 ext_csd[EXT_CSD_SEC_ERASE_MULT];
486 card->ext_csd.sec_feature_support =
487 ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT];
488 card->ext_csd.trim_timeout = 300 *
489 ext_csd[EXT_CSD_TRIM_MULT];
Johan Rudholmadd710e2011-12-02 08:51:06 +0100490
491 /*
492 * Note that the call to mmc_part_add above defaults to read
493 * only. If this default assumption is changed, the call must
494 * take into account the value of boot_locked below.
495 */
496 card->ext_csd.boot_ro_lock = ext_csd[EXT_CSD_BOOT_WP];
497 card->ext_csd.boot_ro_lockable = true;
Fredrik Soderstedt60443712013-04-23 16:27:07 +0200498
499 /* Save power class values */
500 card->ext_csd.raw_pwr_cl_52_195 =
501 ext_csd[EXT_CSD_PWR_CL_52_195];
502 card->ext_csd.raw_pwr_cl_26_195 =
503 ext_csd[EXT_CSD_PWR_CL_26_195];
504 card->ext_csd.raw_pwr_cl_52_360 =
505 ext_csd[EXT_CSD_PWR_CL_52_360];
506 card->ext_csd.raw_pwr_cl_26_360 =
507 ext_csd[EXT_CSD_PWR_CL_26_360];
508 card->ext_csd.raw_pwr_cl_200_195 =
509 ext_csd[EXT_CSD_PWR_CL_200_195];
510 card->ext_csd.raw_pwr_cl_200_360 =
511 ext_csd[EXT_CSD_PWR_CL_200_360];
512 card->ext_csd.raw_pwr_cl_ddr_52_195 =
513 ext_csd[EXT_CSD_PWR_CL_DDR_52_195];
514 card->ext_csd.raw_pwr_cl_ddr_52_360 =
515 ext_csd[EXT_CSD_PWR_CL_DDR_52_360];
Seungwon Jeon0a5b6432014-04-23 17:14:58 +0900516 card->ext_csd.raw_pwr_cl_ddr_200_360 =
517 ext_csd[EXT_CSD_PWR_CL_DDR_200_360];
Adrian Hunterdfe86cb2010-08-11 14:17:46 -0700518 }
519
Adrian Hunterb2499512011-08-29 16:42:11 +0300520 if (card->ext_csd.rev >= 5) {
Romain Izard7c4f10a2013-06-14 14:25:44 +0200521 /* Adjust production date as per JEDEC JESD84-B451 */
522 if (card->cid.year < 2010)
523 card->cid.year += 16;
524
Jaehoon Chung950d56a2012-09-17 08:42:02 +0000525 /* check whether the eMMC card supports BKOPS */
Ulf Hanssonba9f39a2018-12-10 17:52:37 +0100526 if (ext_csd[EXT_CSD_BKOPS_SUPPORT] & 0x1) {
Jaehoon Chung950d56a2012-09-17 08:42:02 +0000527 card->ext_csd.bkops = 1;
Alexey Skidanov0501be62015-01-29 10:49:43 +0200528 card->ext_csd.man_bkops_en =
529 (ext_csd[EXT_CSD_BKOPS_EN] &
530 EXT_CSD_MANUAL_BKOPS_MASK);
Jaehoon Chung950d56a2012-09-17 08:42:02 +0000531 card->ext_csd.raw_bkops_status =
532 ext_csd[EXT_CSD_BKOPS_STATUS];
Uri Yanai6962c2f2017-02-07 18:00:00 +0200533 if (card->ext_csd.man_bkops_en)
534 pr_debug("%s: MAN_BKOPS_EN bit is set\n",
Jaehoon Chung950d56a2012-09-17 08:42:02 +0000535 mmc_hostname(card->host));
Uri Yanaiefff8e72017-02-07 18:00:01 +0200536 card->ext_csd.auto_bkops_en =
537 (ext_csd[EXT_CSD_BKOPS_EN] &
538 EXT_CSD_AUTO_BKOPS_MASK);
539 if (card->ext_csd.auto_bkops_en)
540 pr_debug("%s: AUTO_BKOPS_EN bit is set\n",
541 mmc_hostname(card->host));
Jaehoon Chung950d56a2012-09-17 08:42:02 +0000542 }
543
Jaehoon Chungeb0d8f12011-10-18 01:26:42 -0400544 /* check whether the eMMC card supports HPI */
Pratibhasagar V53202262016-06-09 18:09:31 -0400545 if (!mmc_card_broken_hpi(card) &&
546 !broken_hpi && (ext_csd[EXT_CSD_HPI_FEATURES] & 0x1)) {
Jaehoon Chungeb0d8f12011-10-18 01:26:42 -0400547 card->ext_csd.hpi = 1;
548 if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x2)
549 card->ext_csd.hpi_cmd = MMC_STOP_TRANSMISSION;
550 else
551 card->ext_csd.hpi_cmd = MMC_SEND_STATUS;
552 /*
553 * Indicate the maximum timeout to close
554 * a command interrupted by HPI
555 */
556 card->ext_csd.out_of_int_time =
557 ext_csd[EXT_CSD_OUT_OF_INTERRUPT_TIME] * 10;
558 }
559
Andrei Warkentinf4c55222011-03-31 18:40:00 -0500560 card->ext_csd.rel_param = ext_csd[EXT_CSD_WR_REL_PARAM];
Adrian Hunterb2499512011-08-29 16:42:11 +0300561 card->ext_csd.rst_n_function = ext_csd[EXT_CSD_RST_N_FUNCTION];
Loic Pallardy090d25f2012-11-17 18:08:24 -0500562
563 /*
564 * RPMB regions are defined in multiples of 128K.
565 */
566 card->ext_csd.raw_rpmb_size_mult = ext_csd[EXT_CSD_RPMB_MULT];
Balaji T Kd0123cca2013-01-25 17:00:30 +0530567 if (ext_csd[EXT_CSD_RPMB_MULT] && mmc_host_cmd23(card->host)) {
Loic Pallardy090d25f2012-11-17 18:08:24 -0500568 mmc_part_add(card, ext_csd[EXT_CSD_RPMB_MULT] << 17,
569 EXT_CSD_PART_CONFIG_ACC_RPMB,
570 "rpmb", 0, false,
571 MMC_BLK_DATA_AREA_RPMB);
572 }
Adrian Hunterb2499512011-08-29 16:42:11 +0300573 }
Andrei Warkentinf4c55222011-03-31 18:40:00 -0500574
Andrei Warkentin5238acb2011-09-24 12:12:30 -0400575 card->ext_csd.raw_erased_mem_count = ext_csd[EXT_CSD_ERASED_MEM_CONT];
Adrian Hunterdfe86cb2010-08-11 14:17:46 -0700576 if (ext_csd[EXT_CSD_ERASED_MEM_CONT])
577 card->erased_byte = 0xFF;
578 else
579 card->erased_byte = 0x0;
580
Seungwon Jeon336c7162011-10-25 09:43:12 +0900581 /* eMMC v4.5 or later */
Ulf Hanssonfe1b5702016-11-04 18:32:33 +0100582 card->ext_csd.generic_cmd6_time = DEFAULT_CMD6_TIMEOUT_MS;
Girish K Sbec87262011-10-13 12:04:16 +0530583 if (card->ext_csd.rev >= 6) {
Seungwon Jeon336c7162011-10-25 09:43:12 +0900584 card->ext_csd.feature_support |= MMC_DISCARD_FEATURE;
585
Seungwon Jeonb23cf0b2011-09-23 14:15:29 +0900586 card->ext_csd.generic_cmd6_time = 10 *
587 ext_csd[EXT_CSD_GENERIC_CMD6_TIME];
Girish K Sbec87262011-10-13 12:04:16 +0530588 card->ext_csd.power_off_longtime = 10 *
589 ext_csd[EXT_CSD_POWER_OFF_LONG_TIME];
Seungwon Jeonb23cf0b2011-09-23 14:15:29 +0900590
Seungwon Jeon336c7162011-10-25 09:43:12 +0900591 card->ext_csd.cache_size =
592 ext_csd[EXT_CSD_CACHE_SIZE + 0] << 0 |
593 ext_csd[EXT_CSD_CACHE_SIZE + 1] << 8 |
594 ext_csd[EXT_CSD_CACHE_SIZE + 2] << 16 |
595 ext_csd[EXT_CSD_CACHE_SIZE + 3] << 24;
Saugata Das42659002011-12-21 13:09:17 +0530596
597 if (ext_csd[EXT_CSD_DATA_SECTOR_SIZE] == 1)
598 card->ext_csd.data_sector_size = 4096;
599 else
600 card->ext_csd.data_sector_size = 512;
601
602 if ((ext_csd[EXT_CSD_DATA_TAG_SUPPORT] & 1) &&
603 (ext_csd[EXT_CSD_TAG_UNIT_SIZE] <= 8)) {
604 card->ext_csd.data_tag_unit_size =
605 ((unsigned int) 1 << ext_csd[EXT_CSD_TAG_UNIT_SIZE]) *
606 (card->ext_csd.data_sector_size);
607 } else {
608 card->ext_csd.data_tag_unit_size = 0;
609 }
Seungwon Jeonabd9ac12013-02-06 17:01:43 +0900610
611 card->ext_csd.max_packed_writes =
612 ext_csd[EXT_CSD_MAX_PACKED_WRITES];
613 card->ext_csd.max_packed_reads =
614 ext_csd[EXT_CSD_MAX_PACKED_READS];
Saugata Dasa5075eb2012-05-17 16:32:21 +0530615 } else {
616 card->ext_csd.data_sector_size = 512;
Seungwon Jeon336c7162011-10-25 09:43:12 +0900617 }
Seungwon Jeon881d1c22011-10-14 14:03:21 +0900618
Gwendal Grignou0f762422014-10-16 11:27:16 -0700619 /* eMMC v5 or later */
620 if (card->ext_csd.rev >= 7) {
621 memcpy(card->ext_csd.fwrev, &ext_csd[EXT_CSD_FIRMWARE_VERSION],
622 MMC_FIRMWARE_LEN);
623 card->ext_csd.ffu_capable =
624 (ext_csd[EXT_CSD_SUPPORTED_MODE] & 0x1) &&
625 !(ext_csd[EXT_CSD_FW_CONFIG] & 0x1);
Jungseung Lee46bc5c42016-12-22 12:37:34 +0900626
627 card->ext_csd.pre_eol_info = ext_csd[EXT_CSD_PRE_EOL_INFO];
628 card->ext_csd.device_life_time_est_typ_a =
629 ext_csd[EXT_CSD_DEVICE_LIFE_TIME_EST_TYP_A];
630 card->ext_csd.device_life_time_est_typ_b =
631 ext_csd[EXT_CSD_DEVICE_LIFE_TIME_EST_TYP_B];
Gwendal Grignou0f762422014-10-16 11:27:16 -0700632 }
Adrian Hunter925ff3a2016-11-29 12:09:16 +0200633
634 /* eMMC v5.1 or later */
635 if (card->ext_csd.rev >= 8) {
636 card->ext_csd.cmdq_support = ext_csd[EXT_CSD_CMDQ_SUPPORT] &
637 EXT_CSD_CMDQ_SUPPORTED;
638 card->ext_csd.cmdq_depth = (ext_csd[EXT_CSD_CMDQ_DEPTH] &
639 EXT_CSD_CMDQ_DEPTH_MASK) + 1;
640 /* Exclude inefficiently small queue depths */
641 if (card->ext_csd.cmdq_depth <= 2) {
642 card->ext_csd.cmdq_support = false;
643 card->ext_csd.cmdq_depth = 0;
644 }
645 if (card->ext_csd.cmdq_support) {
646 pr_debug("%s: Command Queue supported depth %u\n",
647 mmc_hostname(card->host),
648 card->ext_csd.cmdq_depth);
649 }
Krishna Konda064f7e52020-05-01 19:23:01 +0530650 card->ext_csd.enhanced_rpmb_supported =
651 (card->ext_csd.rel_param &
652 EXT_CSD_WR_REL_PARAM_EN_RPMB_REL_WR);
Adrian Hunter925ff3a2016-11-29 12:09:16 +0200653 }
Pierre Ossman7ea239d2006-12-31 00:11:32 +0100654out:
Philip Rakity08ee80cc2011-05-24 18:14:58 -0700655 return err;
656}
Pierre Ossman7ea239d2006-12-31 00:11:32 +0100657
Ulf Hansson076ec382014-10-20 13:37:24 +0200658static int mmc_read_ext_csd(struct mmc_card *card)
659{
Ulf Hanssonc1977872014-10-20 14:08:16 +0200660 u8 *ext_csd;
Ulf Hansson076ec382014-10-20 13:37:24 +0200661 int err;
662
Ulf Hanssonc1977872014-10-20 14:08:16 +0200663 if (!mmc_can_ext_csd(card))
664 return 0;
665
Ulf Hansson076ec382014-10-20 13:37:24 +0200666 err = mmc_get_ext_csd(card, &ext_csd);
Ulf Hanssonc1977872014-10-20 14:08:16 +0200667 if (err) {
668 /* If the host or the card can't do the switch,
669 * fail more gracefully. */
670 if ((err != -EINVAL)
671 && (err != -ENOSYS)
672 && (err != -EFAULT))
673 return err;
674
675 /*
676 * High capacity cards should have this "magic" size
677 * stored in their CSD.
678 */
679 if (card->csd.capacity == (4096 * 512)) {
680 pr_err("%s: unable to read EXT_CSD on a possible high capacity card. Card will be ignored.\n",
681 mmc_hostname(card->host));
682 } else {
683 pr_warn("%s: unable to read EXT_CSD, performance might suffer\n",
684 mmc_hostname(card->host));
685 err = 0;
686 }
687
Ulf Hansson076ec382014-10-20 13:37:24 +0200688 return err;
Ulf Hanssonc1977872014-10-20 14:08:16 +0200689 }
Ulf Hansson076ec382014-10-20 13:37:24 +0200690
691 err = mmc_decode_ext_csd(card, ext_csd);
692 kfree(ext_csd);
693 return err;
694}
695
Philip Rakityf39b2dd92011-07-07 09:04:55 -0700696static int mmc_compare_ext_csds(struct mmc_card *card, unsigned bus_width)
Philip Rakity08ee80cc2011-05-24 18:14:58 -0700697{
698 u8 *bw_ext_csd;
699 int err;
700
Philip Rakityf39b2dd92011-07-07 09:04:55 -0700701 if (bus_width == MMC_BUS_WIDTH_1)
702 return 0;
Philip Rakity08ee80cc2011-05-24 18:14:58 -0700703
Philip Rakityf39b2dd92011-07-07 09:04:55 -0700704 err = mmc_get_ext_csd(card, &bw_ext_csd);
Ulf Hanssonc1977872014-10-20 14:08:16 +0200705 if (err)
706 return err;
Philip Rakity08ee80cc2011-05-24 18:14:58 -0700707
Philip Rakity08ee80cc2011-05-24 18:14:58 -0700708 /* only compare read only fields */
Jurgen Heeksdd13b4e2012-02-01 13:30:55 +0100709 err = !((card->ext_csd.raw_partition_support ==
Philip Rakity08ee80cc2011-05-24 18:14:58 -0700710 bw_ext_csd[EXT_CSD_PARTITION_SUPPORT]) &&
Philip Rakityf39b2dd92011-07-07 09:04:55 -0700711 (card->ext_csd.raw_erased_mem_count ==
Philip Rakity08ee80cc2011-05-24 18:14:58 -0700712 bw_ext_csd[EXT_CSD_ERASED_MEM_CONT]) &&
Philip Rakityf39b2dd92011-07-07 09:04:55 -0700713 (card->ext_csd.rev ==
Philip Rakity08ee80cc2011-05-24 18:14:58 -0700714 bw_ext_csd[EXT_CSD_REV]) &&
Philip Rakityf39b2dd92011-07-07 09:04:55 -0700715 (card->ext_csd.raw_ext_csd_structure ==
Philip Rakity08ee80cc2011-05-24 18:14:58 -0700716 bw_ext_csd[EXT_CSD_STRUCTURE]) &&
Philip Rakityf39b2dd92011-07-07 09:04:55 -0700717 (card->ext_csd.raw_card_type ==
Philip Rakity08ee80cc2011-05-24 18:14:58 -0700718 bw_ext_csd[EXT_CSD_CARD_TYPE]) &&
Philip Rakityf39b2dd92011-07-07 09:04:55 -0700719 (card->ext_csd.raw_s_a_timeout ==
Philip Rakity08ee80cc2011-05-24 18:14:58 -0700720 bw_ext_csd[EXT_CSD_S_A_TIMEOUT]) &&
Philip Rakityf39b2dd92011-07-07 09:04:55 -0700721 (card->ext_csd.raw_hc_erase_gap_size ==
Philip Rakity08ee80cc2011-05-24 18:14:58 -0700722 bw_ext_csd[EXT_CSD_HC_WP_GRP_SIZE]) &&
Philip Rakityf39b2dd92011-07-07 09:04:55 -0700723 (card->ext_csd.raw_erase_timeout_mult ==
Philip Rakity08ee80cc2011-05-24 18:14:58 -0700724 bw_ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]) &&
Philip Rakityf39b2dd92011-07-07 09:04:55 -0700725 (card->ext_csd.raw_hc_erase_grp_size ==
Philip Rakity08ee80cc2011-05-24 18:14:58 -0700726 bw_ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]) &&
Philip Rakityf39b2dd92011-07-07 09:04:55 -0700727 (card->ext_csd.raw_sec_trim_mult ==
Philip Rakity08ee80cc2011-05-24 18:14:58 -0700728 bw_ext_csd[EXT_CSD_SEC_TRIM_MULT]) &&
Philip Rakityf39b2dd92011-07-07 09:04:55 -0700729 (card->ext_csd.raw_sec_erase_mult ==
Philip Rakity08ee80cc2011-05-24 18:14:58 -0700730 bw_ext_csd[EXT_CSD_SEC_ERASE_MULT]) &&
Philip Rakityf39b2dd92011-07-07 09:04:55 -0700731 (card->ext_csd.raw_sec_feature_support ==
Philip Rakity08ee80cc2011-05-24 18:14:58 -0700732 bw_ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]) &&
Philip Rakityf39b2dd92011-07-07 09:04:55 -0700733 (card->ext_csd.raw_trim_mult ==
Philip Rakity08ee80cc2011-05-24 18:14:58 -0700734 bw_ext_csd[EXT_CSD_TRIM_MULT]) &&
Philip Rakityf39b2dd92011-07-07 09:04:55 -0700735 (card->ext_csd.raw_sectors[0] ==
736 bw_ext_csd[EXT_CSD_SEC_CNT + 0]) &&
737 (card->ext_csd.raw_sectors[1] ==
738 bw_ext_csd[EXT_CSD_SEC_CNT + 1]) &&
739 (card->ext_csd.raw_sectors[2] ==
740 bw_ext_csd[EXT_CSD_SEC_CNT + 2]) &&
741 (card->ext_csd.raw_sectors[3] ==
Fredrik Soderstedt60443712013-04-23 16:27:07 +0200742 bw_ext_csd[EXT_CSD_SEC_CNT + 3]) &&
743 (card->ext_csd.raw_pwr_cl_52_195 ==
744 bw_ext_csd[EXT_CSD_PWR_CL_52_195]) &&
745 (card->ext_csd.raw_pwr_cl_26_195 ==
746 bw_ext_csd[EXT_CSD_PWR_CL_26_195]) &&
747 (card->ext_csd.raw_pwr_cl_52_360 ==
748 bw_ext_csd[EXT_CSD_PWR_CL_52_360]) &&
749 (card->ext_csd.raw_pwr_cl_26_360 ==
750 bw_ext_csd[EXT_CSD_PWR_CL_26_360]) &&
751 (card->ext_csd.raw_pwr_cl_200_195 ==
752 bw_ext_csd[EXT_CSD_PWR_CL_200_195]) &&
753 (card->ext_csd.raw_pwr_cl_200_360 ==
754 bw_ext_csd[EXT_CSD_PWR_CL_200_360]) &&
755 (card->ext_csd.raw_pwr_cl_ddr_52_195 ==
756 bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_195]) &&
757 (card->ext_csd.raw_pwr_cl_ddr_52_360 ==
Seungwon Jeon0a5b6432014-04-23 17:14:58 +0900758 bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_360]) &&
759 (card->ext_csd.raw_pwr_cl_ddr_200_360 ==
760 bw_ext_csd[EXT_CSD_PWR_CL_DDR_200_360]));
761
Philip Rakity08ee80cc2011-05-24 18:14:58 -0700762 if (err)
763 err = -EINVAL;
764
Ulf Hansson00b41b52014-10-16 16:18:51 +0200765 kfree(bw_ext_csd);
Pierre Ossman7ea239d2006-12-31 00:11:32 +0100766 return err;
767}
768
Pierre Ossman51ec92e2008-03-21 23:54:50 +0100769MMC_DEV_ATTR(cid, "%08x%08x%08x%08x\n", card->raw_cid[0], card->raw_cid[1],
770 card->raw_cid[2], card->raw_cid[3]);
771MMC_DEV_ATTR(csd, "%08x%08x%08x%08x\n", card->raw_csd[0], card->raw_csd[1],
772 card->raw_csd[2], card->raw_csd[3]);
773MMC_DEV_ATTR(date, "%02d/%04d\n", card->cid.month, card->cid.year);
Adrian Hunterdfe86cb2010-08-11 14:17:46 -0700774MMC_DEV_ATTR(erase_size, "%u\n", card->erase_size << 9);
775MMC_DEV_ATTR(preferred_erase_size, "%u\n", card->pref_erase << 9);
Gwendal Grignou0f762422014-10-16 11:27:16 -0700776MMC_DEV_ATTR(ffu_capable, "%d\n", card->ext_csd.ffu_capable);
Pierre Ossman51ec92e2008-03-21 23:54:50 +0100777MMC_DEV_ATTR(hwrev, "0x%x\n", card->cid.hwrev);
778MMC_DEV_ATTR(manfid, "0x%06x\n", card->cid.manfid);
779MMC_DEV_ATTR(name, "%s\n", card->cid.prod_name);
780MMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid);
Bernie Thompson51e7e8b2013-02-27 12:19:17 -0800781MMC_DEV_ATTR(prv, "0x%x\n", card->cid.prv);
Jin Qian04fa0542017-10-12 10:46:59 -0700782MMC_DEV_ATTR(rev, "0x%x\n", card->ext_csd.rev);
Bastian Stender80a780a12017-11-28 09:24:06 +0100783MMC_DEV_ATTR(pre_eol_info, "0x%02x\n", card->ext_csd.pre_eol_info);
Jungseung Lee46bc5c42016-12-22 12:37:34 +0900784MMC_DEV_ATTR(life_time, "0x%02x 0x%02x\n",
785 card->ext_csd.device_life_time_est_typ_a,
786 card->ext_csd.device_life_time_est_typ_b);
Pierre Ossman51ec92e2008-03-21 23:54:50 +0100787MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial);
Chuanxiao Dong709de99d2011-01-22 04:09:41 +0800788MMC_DEV_ATTR(enhanced_area_offset, "%llu\n",
789 card->ext_csd.enhanced_area_offset);
790MMC_DEV_ATTR(enhanced_area_size, "%u\n", card->ext_csd.enhanced_area_size);
Loic Pallardy188cc042012-08-06 17:12:29 +0200791MMC_DEV_ATTR(raw_rpmb_size_mult, "%#x\n", card->ext_csd.raw_rpmb_size_mult);
Krishna Konda064f7e52020-05-01 19:23:01 +0530792MMC_DEV_ATTR(enhanced_rpmb_supported, "%#x\n",
793 card->ext_csd.enhanced_rpmb_supported);
Loic Pallardy188cc042012-08-06 17:12:29 +0200794MMC_DEV_ATTR(rel_sectors, "%#x\n", card->ext_csd.rel_sectors);
Bastian Stenderc892b0d2017-11-28 09:24:07 +0100795MMC_DEV_ATTR(ocr, "0x%08x\n", card->ocr);
Harish Jenny K N974e85e2018-03-07 10:31:42 +0530796MMC_DEV_ATTR(rca, "0x%04x\n", card->rca);
Adrian Hunterb658af72017-03-13 14:36:37 +0200797MMC_DEV_ATTR(cmdq_en, "%d\n", card->ext_csd.cmdq_en);
Pierre Ossman51ec92e2008-03-21 23:54:50 +0100798
Gwendal Grignou0f762422014-10-16 11:27:16 -0700799static ssize_t mmc_fwrev_show(struct device *dev,
800 struct device_attribute *attr,
801 char *buf)
802{
803 struct mmc_card *card = mmc_dev_to_card(dev);
804
805 if (card->ext_csd.rev < 7) {
806 return sprintf(buf, "0x%x\n", card->cid.fwrev);
807 } else {
808 return sprintf(buf, "0x%*phN\n", MMC_FIRMWARE_LEN,
809 card->ext_csd.fwrev);
810 }
811}
812
813static DEVICE_ATTR(fwrev, S_IRUGO, mmc_fwrev_show, NULL);
814
Bojan Prtvar6825a602016-07-19 11:16:38 +0200815static ssize_t mmc_dsr_show(struct device *dev,
816 struct device_attribute *attr,
817 char *buf)
818{
819 struct mmc_card *card = mmc_dev_to_card(dev);
820 struct mmc_host *host = card->host;
821
822 if (card->csd.dsr_imp && host->dsr_req)
823 return sprintf(buf, "0x%x\n", host->dsr);
824 else
825 /* return default DSR value */
826 return sprintf(buf, "0x%x\n", 0x404);
827}
828
829static DEVICE_ATTR(dsr, S_IRUGO, mmc_dsr_show, NULL);
830
Pierre Ossman51ec92e2008-03-21 23:54:50 +0100831static struct attribute *mmc_std_attrs[] = {
832 &dev_attr_cid.attr,
833 &dev_attr_csd.attr,
834 &dev_attr_date.attr,
Adrian Hunterdfe86cb2010-08-11 14:17:46 -0700835 &dev_attr_erase_size.attr,
836 &dev_attr_preferred_erase_size.attr,
Pierre Ossman51ec92e2008-03-21 23:54:50 +0100837 &dev_attr_fwrev.attr,
Gwendal Grignou0f762422014-10-16 11:27:16 -0700838 &dev_attr_ffu_capable.attr,
Pierre Ossman51ec92e2008-03-21 23:54:50 +0100839 &dev_attr_hwrev.attr,
840 &dev_attr_manfid.attr,
841 &dev_attr_name.attr,
842 &dev_attr_oemid.attr,
Bernie Thompson51e7e8b2013-02-27 12:19:17 -0800843 &dev_attr_prv.attr,
Jin Qian04fa0542017-10-12 10:46:59 -0700844 &dev_attr_rev.attr,
Jungseung Lee46bc5c42016-12-22 12:37:34 +0900845 &dev_attr_pre_eol_info.attr,
846 &dev_attr_life_time.attr,
Pierre Ossman51ec92e2008-03-21 23:54:50 +0100847 &dev_attr_serial.attr,
Chuanxiao Dong709de99d2011-01-22 04:09:41 +0800848 &dev_attr_enhanced_area_offset.attr,
849 &dev_attr_enhanced_area_size.attr,
Loic Pallardy188cc042012-08-06 17:12:29 +0200850 &dev_attr_raw_rpmb_size_mult.attr,
Krishna Konda064f7e52020-05-01 19:23:01 +0530851 &dev_attr_enhanced_rpmb_supported.attr,
Loic Pallardy188cc042012-08-06 17:12:29 +0200852 &dev_attr_rel_sectors.attr,
Bojan Prtvar5fb06af2016-07-04 13:56:55 +0200853 &dev_attr_ocr.attr,
Harish Jenny K N974e85e2018-03-07 10:31:42 +0530854 &dev_attr_rca.attr,
Bojan Prtvar6825a602016-07-19 11:16:38 +0200855 &dev_attr_dsr.attr,
Adrian Hunterb658af72017-03-13 14:36:37 +0200856 &dev_attr_cmdq_en.attr,
Pierre Ossman51ec92e2008-03-21 23:54:50 +0100857 NULL,
858};
Axel Lind1e58212014-03-08 15:05:27 +0800859ATTRIBUTE_GROUPS(mmc_std);
Pierre Ossman51ec92e2008-03-21 23:54:50 +0100860
861static struct device_type mmc_type = {
Axel Lind1e58212014-03-08 15:05:27 +0800862 .groups = mmc_std_groups,
Pierre Ossman51ec92e2008-03-21 23:54:50 +0100863};
864
Pierre Ossman7ea239d2006-12-31 00:11:32 +0100865/*
Girish K Sb87d8db2011-09-23 20:41:47 +0530866 * Select the PowerClass for the current bus width
867 * If power class is defined for 4/8 bit bus in the
868 * extended CSD register, select it by executing the
869 * mmc_switch command.
870 */
Seungwon Jeon23850492014-04-23 17:08:05 +0900871static int __mmc_select_powerclass(struct mmc_card *card,
872 unsigned int bus_width)
Girish K Sb87d8db2011-09-23 20:41:47 +0530873{
Seungwon Jeon23850492014-04-23 17:08:05 +0900874 struct mmc_host *host = card->host;
875 struct mmc_ext_csd *ext_csd = &card->ext_csd;
Fredrik Soderstedt60443712013-04-23 16:27:07 +0200876 unsigned int pwrclass_val = 0;
Seungwon Jeon23850492014-04-23 17:08:05 +0900877 int err = 0;
Girish K Sb87d8db2011-09-23 20:41:47 +0530878
Girish K Sb87d8db2011-09-23 20:41:47 +0530879 switch (1 << host->ios.vdd) {
880 case MMC_VDD_165_195:
Seungwon Jeon23850492014-04-23 17:08:05 +0900881 if (host->ios.clock <= MMC_HIGH_26_MAX_DTR)
882 pwrclass_val = ext_csd->raw_pwr_cl_26_195;
883 else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR)
Fredrik Soderstedt60443712013-04-23 16:27:07 +0200884 pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ?
Seungwon Jeon23850492014-04-23 17:08:05 +0900885 ext_csd->raw_pwr_cl_52_195 :
886 ext_csd->raw_pwr_cl_ddr_52_195;
887 else if (host->ios.clock <= MMC_HS200_MAX_DTR)
888 pwrclass_val = ext_csd->raw_pwr_cl_200_195;
Girish K Sb87d8db2011-09-23 20:41:47 +0530889 break;
Subhash Jadavani93fc5a42012-04-03 12:25:58 +0530890 case MMC_VDD_27_28:
891 case MMC_VDD_28_29:
892 case MMC_VDD_29_30:
893 case MMC_VDD_30_31:
894 case MMC_VDD_31_32:
Girish K Sb87d8db2011-09-23 20:41:47 +0530895 case MMC_VDD_32_33:
896 case MMC_VDD_33_34:
897 case MMC_VDD_34_35:
898 case MMC_VDD_35_36:
Seungwon Jeon23850492014-04-23 17:08:05 +0900899 if (host->ios.clock <= MMC_HIGH_26_MAX_DTR)
900 pwrclass_val = ext_csd->raw_pwr_cl_26_360;
901 else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR)
Fredrik Soderstedt60443712013-04-23 16:27:07 +0200902 pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ?
Seungwon Jeon23850492014-04-23 17:08:05 +0900903 ext_csd->raw_pwr_cl_52_360 :
904 ext_csd->raw_pwr_cl_ddr_52_360;
905 else if (host->ios.clock <= MMC_HS200_MAX_DTR)
Seungwon Jeon0a5b6432014-04-23 17:14:58 +0900906 pwrclass_val = (bus_width == EXT_CSD_DDR_BUS_WIDTH_8) ?
907 ext_csd->raw_pwr_cl_ddr_200_360 :
908 ext_csd->raw_pwr_cl_200_360;
Girish K Sb87d8db2011-09-23 20:41:47 +0530909 break;
910 default:
Joe Perches66061102014-09-12 14:56:56 -0700911 pr_warn("%s: Voltage range not supported for power class\n",
912 mmc_hostname(host));
Girish K Sb87d8db2011-09-23 20:41:47 +0530913 return -EINVAL;
914 }
915
Girish K Sb87d8db2011-09-23 20:41:47 +0530916 if (bus_width & (EXT_CSD_BUS_WIDTH_8 | EXT_CSD_DDR_BUS_WIDTH_8))
917 pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_8BIT_MASK) >>
918 EXT_CSD_PWR_CL_8BIT_SHIFT;
919 else
920 pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_4BIT_MASK) >>
921 EXT_CSD_PWR_CL_4BIT_SHIFT;
922
923 /* If the power class is different from the default value */
924 if (pwrclass_val > 0) {
925 err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
926 EXT_CSD_POWER_CLASS,
927 pwrclass_val,
Seungwon Jeon71fe3eb2011-10-18 13:20:57 +0900928 card->ext_csd.generic_cmd6_time);
Girish K Sb87d8db2011-09-23 20:41:47 +0530929 }
930
931 return err;
932}
933
Seungwon Jeon23850492014-04-23 17:08:05 +0900934static int mmc_select_powerclass(struct mmc_card *card)
935{
936 struct mmc_host *host = card->host;
937 u32 bus_width, ext_csd_bits;
938 int err, ddr;
939
940 /* Power class selection is supported for versions >= 4.0 */
Ulf Hansson148bcab2014-10-20 11:33:53 +0200941 if (!mmc_can_ext_csd(card))
Seungwon Jeon23850492014-04-23 17:08:05 +0900942 return 0;
943
944 bus_width = host->ios.bus_width;
945 /* Power class values are defined only for 4/8 bit bus */
946 if (bus_width == MMC_BUS_WIDTH_1)
947 return 0;
948
949 ddr = card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52;
950 if (ddr)
951 ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ?
952 EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4;
953 else
954 ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ?
955 EXT_CSD_BUS_WIDTH_8 : EXT_CSD_BUS_WIDTH_4;
956
957 err = __mmc_select_powerclass(card, ext_csd_bits);
958 if (err)
959 pr_warn("%s: power class selection to bus width %d ddr %d failed\n",
960 mmc_hostname(host), 1 << bus_width, ddr);
961
962 return err;
963}
964
Girish K Sb87d8db2011-09-23 20:41:47 +0530965/*
Seungwon Jeon577fb132014-04-23 17:08:44 +0900966 * Set the bus speed for the selected speed mode.
Girish K Sa4924c72012-01-11 14:04:52 -0500967 */
Seungwon Jeon577fb132014-04-23 17:08:44 +0900968static void mmc_set_bus_speed(struct mmc_card *card)
Girish K Sa4924c72012-01-11 14:04:52 -0500969{
Seungwon Jeon577fb132014-04-23 17:08:44 +0900970 unsigned int max_dtr = (unsigned int)-1;
971
Seungwon Jeon0a5b6432014-04-23 17:14:58 +0900972 if ((mmc_card_hs200(card) || mmc_card_hs400(card)) &&
973 max_dtr > card->ext_csd.hs200_max_dtr)
Seungwon Jeon577fb132014-04-23 17:08:44 +0900974 max_dtr = card->ext_csd.hs200_max_dtr;
975 else if (mmc_card_hs(card) && max_dtr > card->ext_csd.hs_max_dtr)
976 max_dtr = card->ext_csd.hs_max_dtr;
977 else if (max_dtr > card->csd.max_dtr)
978 max_dtr = card->csd.max_dtr;
979
980 mmc_set_clock(card->host, max_dtr);
981}
982
983/*
984 * Select the bus width amoung 4-bit and 8-bit(SDR).
985 * If the bus width is changed successfully, return the selected width value.
986 * Zero is returned instead of error value if the wide width is not supported.
987 */
988static int mmc_select_bus_width(struct mmc_card *card)
989{
Girish K Sa4924c72012-01-11 14:04:52 -0500990 static unsigned ext_csd_bits[] = {
Girish K Sa4924c72012-01-11 14:04:52 -0500991 EXT_CSD_BUS_WIDTH_8,
Seungwon Jeon577fb132014-04-23 17:08:44 +0900992 EXT_CSD_BUS_WIDTH_4,
Girish K Sa4924c72012-01-11 14:04:52 -0500993 };
994 static unsigned bus_widths[] = {
Girish K Sa4924c72012-01-11 14:04:52 -0500995 MMC_BUS_WIDTH_8,
Seungwon Jeon577fb132014-04-23 17:08:44 +0900996 MMC_BUS_WIDTH_4,
Girish K Sa4924c72012-01-11 14:04:52 -0500997 };
Seungwon Jeon577fb132014-04-23 17:08:44 +0900998 struct mmc_host *host = card->host;
999 unsigned idx, bus_width = 0;
1000 int err = 0;
Girish K Sa4924c72012-01-11 14:04:52 -05001001
Alexandre Belloni1c2d26e2014-12-17 19:32:06 +01001002 if (!mmc_can_ext_csd(card) ||
Seungwon Jeon577fb132014-04-23 17:08:44 +09001003 !(host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA)))
1004 return 0;
Girish K Sa4924c72012-01-11 14:04:52 -05001005
Seungwon Jeon577fb132014-04-23 17:08:44 +09001006 idx = (host->caps & MMC_CAP_8_BIT_DATA) ? 0 : 1;
Girish K Sa4924c72012-01-11 14:04:52 -05001007
1008 /*
1009 * Unlike SD, MMC cards dont have a configuration register to notify
1010 * supported bus width. So bus test command should be run to identify
1011 * the supported bus width or compare the ext csd values of current
1012 * bus width and ext csd values of 1 bit mode read earlier.
1013 */
Seungwon Jeon577fb132014-04-23 17:08:44 +09001014 for (; idx < ARRAY_SIZE(bus_widths); idx++) {
Girish K Sa4924c72012-01-11 14:04:52 -05001015 /*
1016 * Host is capable of 8bit transfer, then switch
1017 * the device to work in 8bit transfer mode. If the
1018 * mmc switch command returns error then switch to
1019 * 4bit transfer mode. On success set the corresponding
1020 * bus width on the host.
1021 */
1022 err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
1023 EXT_CSD_BUS_WIDTH,
1024 ext_csd_bits[idx],
1025 card->ext_csd.generic_cmd6_time);
1026 if (err)
1027 continue;
1028
Seungwon Jeon577fb132014-04-23 17:08:44 +09001029 bus_width = bus_widths[idx];
1030 mmc_set_bus_width(host, bus_width);
Girish K Sa4924c72012-01-11 14:04:52 -05001031
Seungwon Jeon577fb132014-04-23 17:08:44 +09001032 /*
1033 * If controller can't handle bus width test,
1034 * compare ext_csd previously read in 1 bit mode
1035 * against ext_csd at new bus width
1036 */
Girish K Sa4924c72012-01-11 14:04:52 -05001037 if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST))
Seungwon Jeon577fb132014-04-23 17:08:44 +09001038 err = mmc_compare_ext_csds(card, bus_width);
Girish K Sa4924c72012-01-11 14:04:52 -05001039 else
Seungwon Jeon577fb132014-04-23 17:08:44 +09001040 err = mmc_bus_test(card, bus_width);
1041
1042 if (!err) {
1043 err = bus_width;
Girish K Sa4924c72012-01-11 14:04:52 -05001044 break;
Seungwon Jeon577fb132014-04-23 17:08:44 +09001045 } else {
1046 pr_warn("%s: switch to bus width %d failed\n",
Wolfram Sanged9feec2016-01-29 09:27:50 +01001047 mmc_hostname(host), 1 << bus_width);
Seungwon Jeon577fb132014-04-23 17:08:44 +09001048 }
Girish K Sa4924c72012-01-11 14:04:52 -05001049 }
1050
Seungwon Jeon577fb132014-04-23 17:08:44 +09001051 return err;
1052}
1053
1054/*
1055 * Switch to the high-speed mode
1056 */
1057static int mmc_select_hs(struct mmc_card *card)
1058{
1059 int err;
1060
1061 err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
1062 EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS,
Ulf Hansson53e60652016-11-09 19:40:29 +01001063 card->ext_csd.generic_cmd6_time, MMC_TIMING_MMC_HS,
Ulf Hansson02098cc2020-02-04 09:54:41 +01001064 true, true);
Jungseung Lee67d35962016-08-24 19:34:09 +09001065 if (err)
1066 pr_warn("%s: switch to high-speed failed, err:%d\n",
1067 mmc_hostname(card->host), err);
1068
Seungwon Jeon577fb132014-04-23 17:08:44 +09001069 return err;
1070}
1071
1072/*
1073 * Activate wide bus and DDR if supported.
1074 */
1075static int mmc_select_hs_ddr(struct mmc_card *card)
1076{
1077 struct mmc_host *host = card->host;
1078 u32 bus_width, ext_csd_bits;
1079 int err = 0;
1080
1081 if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52))
1082 return 0;
1083
1084 bus_width = host->ios.bus_width;
1085 if (bus_width == MMC_BUS_WIDTH_1)
1086 return 0;
1087
1088 ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ?
1089 EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4;
1090
Ulf Hanssone173f892016-11-09 21:00:26 +01001091 err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
1092 EXT_CSD_BUS_WIDTH,
1093 ext_csd_bits,
1094 card->ext_csd.generic_cmd6_time,
1095 MMC_TIMING_MMC_DDR52,
Ulf Hansson02098cc2020-02-04 09:54:41 +01001096 true, true);
Seungwon Jeon577fb132014-04-23 17:08:44 +09001097 if (err) {
Andrew Gabbasov4b75bff2014-10-01 07:14:11 -05001098 pr_err("%s: switch to bus width %d ddr failed\n",
Seungwon Jeon577fb132014-04-23 17:08:44 +09001099 mmc_hostname(host), 1 << bus_width);
1100 return err;
1101 }
1102
1103 /*
1104 * eMMC cards can support 3.3V to 1.2V i/o (vccq)
1105 * signaling.
1106 *
1107 * EXT_CSD_CARD_TYPE_DDR_1_8V means 3.3V or 1.8V vccq.
1108 *
1109 * 1.8V vccq at 3.3V core voltage (vcc) is not required
1110 * in the JEDEC spec for DDR.
1111 *
Chuanxiao.Dong312449e2014-08-15 11:28:07 +08001112 * Even (e)MMC card can support 3.3v to 1.2v vccq, but not all
1113 * host controller can support this, like some of the SDHCI
1114 * controller which connect to an eMMC device. Some of these
1115 * host controller still needs to use 1.8v vccq for supporting
1116 * DDR mode.
1117 *
1118 * So the sequence will be:
1119 * if (host and device can both support 1.2v IO)
1120 * use 1.2v IO;
1121 * else if (host and device can both support 1.8v IO)
1122 * use 1.8v IO;
1123 * so if host and device can only support 3.3v IO, this is the
1124 * last choice.
Seungwon Jeon577fb132014-04-23 17:08:44 +09001125 *
1126 * WARNING: eMMC rules are NOT the same as SD DDR
1127 */
Ulf Hansson20f921b2017-01-25 12:04:17 +01001128 if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_2V) {
Ulf Hansson4e74b6b2017-01-25 11:12:34 +01001129 err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120);
Ulf Hansson20f921b2017-01-25 12:04:17 +01001130 if (!err)
1131 return 0;
1132 }
Seungwon Jeon577fb132014-04-23 17:08:44 +09001133
Ulf Hansson20f921b2017-01-25 12:04:17 +01001134 if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_8V &&
1135 host->caps & MMC_CAP_1_8V_DDR)
Ulf Hansson4e74b6b2017-01-25 11:12:34 +01001136 err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180);
Chuanxiao.Dong312449e2014-08-15 11:28:07 +08001137
1138 /* make sure vccq is 3.3v after switching disaster */
1139 if (err)
Ulf Hansson4e74b6b2017-01-25 11:12:34 +01001140 err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330);
Chuanxiao.Dong312449e2014-08-15 11:28:07 +08001141
Seungwon Jeon577fb132014-04-23 17:08:44 +09001142 return err;
1143}
1144
Seungwon Jeon0a5b6432014-04-23 17:14:58 +09001145static int mmc_select_hs400(struct mmc_card *card)
1146{
1147 struct mmc_host *host = card->host;
Adrian Hunter51b12f72015-10-28 14:25:41 +02001148 unsigned int max_dtr;
Seungwon Jeon0a5b6432014-04-23 17:14:58 +09001149 int err = 0;
Adrian Huntercc4f4142015-02-06 14:12:58 +02001150 u8 val;
Seungwon Jeon0a5b6432014-04-23 17:14:58 +09001151
1152 /*
1153 * HS400 mode requires 8-bit bus width
1154 */
1155 if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 &&
1156 host->ios.bus_width == MMC_BUS_WIDTH_8))
1157 return 0;
1158
Adrian Hunter51b12f72015-10-28 14:25:41 +02001159 /* Switch card to HS mode */
Wenkai Duadb24d42015-11-26 14:00:44 +02001160 val = EXT_CSD_TIMING_HS;
Seungwon Jeon0a5b6432014-04-23 17:14:58 +09001161 err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
Adrian Huntercc4f4142015-02-06 14:12:58 +02001162 EXT_CSD_HS_TIMING, val,
Ulf Hanssonaa33ce32016-11-09 17:33:36 +01001163 card->ext_csd.generic_cmd6_time, 0,
Ulf Hansson02098cc2020-02-04 09:54:41 +01001164 false, true);
Seungwon Jeon0a5b6432014-04-23 17:14:58 +09001165 if (err) {
Andrew Gabbasov4b75bff2014-10-01 07:14:11 -05001166 pr_err("%s: switch to high-speed from hs200 failed, err:%d\n",
Seungwon Jeon0a5b6432014-04-23 17:14:58 +09001167 mmc_hostname(host), err);
1168 return err;
1169 }
1170
Adrian Hunter51b12f72015-10-28 14:25:41 +02001171 /* Set host controller to HS timing */
1172 mmc_set_timing(card->host, MMC_TIMING_MMC_HS);
1173
Simon Hormanba6c7ac2018-06-18 14:57:49 +02001174 /* Prepare host to downgrade to HS timing */
1175 if (host->ops->hs400_downgrade)
1176 host->ops->hs400_downgrade(host);
1177
Ziyuan Xu649c6052016-05-26 13:50:32 +08001178 /* Reduce frequency to HS frequency */
1179 max_dtr = card->ext_csd.hs_max_dtr;
1180 mmc_set_clock(host, max_dtr);
1181
Ulf Hansson60db8a42020-02-04 09:54:40 +01001182 err = mmc_switch_status(card, true);
Chaotian Jing08573ea2016-05-19 16:47:41 +08001183 if (err)
1184 goto out_err;
Adrian Hunterd2302932015-10-28 14:25:43 +02001185
Yinbo Zhucc14eec2018-11-23 11:15:33 +08001186 if (host->ops->hs400_prepare_ddr)
1187 host->ops->hs400_prepare_ddr(host);
1188
Adrian Hunterd2302932015-10-28 14:25:43 +02001189 /* Switch card to DDR */
Seungwon Jeon0a5b6432014-04-23 17:14:58 +09001190 err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
1191 EXT_CSD_BUS_WIDTH,
1192 EXT_CSD_DDR_BUS_WIDTH_8,
1193 card->ext_csd.generic_cmd6_time);
1194 if (err) {
Andrew Gabbasov4b75bff2014-10-01 07:14:11 -05001195 pr_err("%s: switch to bus width for hs400 failed, err:%d\n",
Seungwon Jeon0a5b6432014-04-23 17:14:58 +09001196 mmc_hostname(host), err);
1197 return err;
1198 }
1199
Adrian Hunterd2302932015-10-28 14:25:43 +02001200 /* Switch card to HS400 */
Adrian Huntercc4f4142015-02-06 14:12:58 +02001201 val = EXT_CSD_TIMING_HS400 |
1202 card->drive_strength << EXT_CSD_DRV_STR_SHIFT;
Seungwon Jeon0a5b6432014-04-23 17:14:58 +09001203 err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
Adrian Huntercc4f4142015-02-06 14:12:58 +02001204 EXT_CSD_HS_TIMING, val,
Ulf Hanssonaa33ce32016-11-09 17:33:36 +01001205 card->ext_csd.generic_cmd6_time, 0,
Ulf Hansson02098cc2020-02-04 09:54:41 +01001206 false, true);
Seungwon Jeon0a5b6432014-04-23 17:14:58 +09001207 if (err) {
Andrew Gabbasov4b75bff2014-10-01 07:14:11 -05001208 pr_err("%s: switch to hs400 failed, err:%d\n",
Seungwon Jeon0a5b6432014-04-23 17:14:58 +09001209 mmc_hostname(host), err);
1210 return err;
1211 }
1212
Adrian Hunterd2302932015-10-28 14:25:43 +02001213 /* Set host controller to HS400 timing and frequency */
Seungwon Jeon0a5b6432014-04-23 17:14:58 +09001214 mmc_set_timing(host, MMC_TIMING_MMC_HS400);
1215 mmc_set_bus_speed(card);
1216
Wolfram Sangb0e370b2019-06-11 22:03:43 +02001217 if (host->ops->hs400_complete)
1218 host->ops->hs400_complete(host);
1219
Ulf Hansson60db8a42020-02-04 09:54:40 +01001220 err = mmc_switch_status(card, true);
Chaotian Jing08573ea2016-05-19 16:47:41 +08001221 if (err)
1222 goto out_err;
Adrian Hunterd2302932015-10-28 14:25:43 +02001223
Seungwon Jeon0a5b6432014-04-23 17:14:58 +09001224 return 0;
Adrian Hunterd2302932015-10-28 14:25:43 +02001225
1226out_err:
1227 pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host),
1228 __func__, err);
1229 return err;
Seungwon Jeon0a5b6432014-04-23 17:14:58 +09001230}
1231
Adrian Hunter6376f692015-05-07 13:10:20 +03001232int mmc_hs200_to_hs400(struct mmc_card *card)
1233{
1234 return mmc_select_hs400(card);
1235}
1236
Adrian Hunter6376f692015-05-07 13:10:20 +03001237int mmc_hs400_to_hs200(struct mmc_card *card)
1238{
1239 struct mmc_host *host = card->host;
Adrian Hunter6376f692015-05-07 13:10:20 +03001240 unsigned int max_dtr;
1241 int err;
Adrian Huntercc4f4142015-02-06 14:12:58 +02001242 u8 val;
Adrian Hunter6376f692015-05-07 13:10:20 +03001243
Adrian Hunter6376f692015-05-07 13:10:20 +03001244 /* Reduce frequency to HS */
1245 max_dtr = card->ext_csd.hs_max_dtr;
1246 mmc_set_clock(host, max_dtr);
1247
1248 /* Switch HS400 to HS DDR */
Wenkai Duadb24d42015-11-26 14:00:44 +02001249 val = EXT_CSD_TIMING_HS;
Adrian Hunter6376f692015-05-07 13:10:20 +03001250 err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING,
Ulf Hanssonaa33ce32016-11-09 17:33:36 +01001251 val, card->ext_csd.generic_cmd6_time, 0,
Ulf Hansson02098cc2020-02-04 09:54:41 +01001252 false, true);
Adrian Hunter6376f692015-05-07 13:10:20 +03001253 if (err)
1254 goto out_err;
1255
1256 mmc_set_timing(host, MMC_TIMING_MMC_DDR52);
1257
Ulf Hansson60db8a42020-02-04 09:54:40 +01001258 err = mmc_switch_status(card, true);
Chaotian Jing08573ea2016-05-19 16:47:41 +08001259 if (err)
1260 goto out_err;
Adrian Hunter6376f692015-05-07 13:10:20 +03001261
1262 /* Switch HS DDR to HS */
1263 err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BUS_WIDTH,
1264 EXT_CSD_BUS_WIDTH_8, card->ext_csd.generic_cmd6_time,
Ulf Hansson02098cc2020-02-04 09:54:41 +01001265 0, false, true);
Adrian Hunter6376f692015-05-07 13:10:20 +03001266 if (err)
1267 goto out_err;
1268
1269 mmc_set_timing(host, MMC_TIMING_MMC_HS);
1270
Simon Hormanba6c7ac2018-06-18 14:57:49 +02001271 if (host->ops->hs400_downgrade)
1272 host->ops->hs400_downgrade(host);
1273
Ulf Hansson60db8a42020-02-04 09:54:40 +01001274 err = mmc_switch_status(card, true);
Chaotian Jing08573ea2016-05-19 16:47:41 +08001275 if (err)
1276 goto out_err;
Adrian Hunter6376f692015-05-07 13:10:20 +03001277
1278 /* Switch HS to HS200 */
Adrian Huntercc4f4142015-02-06 14:12:58 +02001279 val = EXT_CSD_TIMING_HS200 |
1280 card->drive_strength << EXT_CSD_DRV_STR_SHIFT;
Adrian Hunter6376f692015-05-07 13:10:20 +03001281 err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING,
Ulf Hanssonaa33ce32016-11-09 17:33:36 +01001282 val, card->ext_csd.generic_cmd6_time, 0,
Ulf Hansson02098cc2020-02-04 09:54:41 +01001283 false, true);
Adrian Hunter6376f692015-05-07 13:10:20 +03001284 if (err)
1285 goto out_err;
1286
1287 mmc_set_timing(host, MMC_TIMING_MMC_HS200);
1288
Adrian Hunteref3d2322016-12-02 13:16:35 +02001289 /*
1290 * For HS200, CRC errors are not a reliable way to know the switch
1291 * failed. If there really is a problem, we would expect tuning will
1292 * fail and the result ends up the same.
1293 */
Ulf Hansson60db8a42020-02-04 09:54:40 +01001294 err = mmc_switch_status(card, false);
Chaotian Jing08573ea2016-05-19 16:47:41 +08001295 if (err)
1296 goto out_err;
Adrian Hunter6376f692015-05-07 13:10:20 +03001297
1298 mmc_set_bus_speed(card);
1299
Ulf Hanssonc8a4e302018-05-22 16:26:26 +02001300 /* Prepare tuning for HS400 mode. */
1301 if (host->ops->prepare_hs400_tuning)
1302 host->ops->prepare_hs400_tuning(host, &host->ios);
1303
Adrian Hunter6376f692015-05-07 13:10:20 +03001304 return 0;
1305
1306out_err:
1307 pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host),
1308 __func__, err);
1309 return err;
1310}
1311
Chanho Minfb458862017-09-26 09:03:40 +09001312static void mmc_select_driver_type(struct mmc_card *card)
1313{
Wolfram Sangbe17f1c2017-11-30 15:49:10 +01001314 int card_drv_type, drive_strength, drv_type = 0;
Wolfram Sang6186d062017-10-15 14:46:14 +02001315 int fixed_drv_type = card->host->fixed_drv_type;
Chanho Minfb458862017-09-26 09:03:40 +09001316
1317 card_drv_type = card->ext_csd.raw_driver_strength |
1318 mmc_driver_type_mask(0);
1319
Wolfram Sang6186d062017-10-15 14:46:14 +02001320 if (fixed_drv_type >= 0)
1321 drive_strength = card_drv_type & mmc_driver_type_mask(fixed_drv_type)
1322 ? fixed_drv_type : 0;
1323 else
1324 drive_strength = mmc_select_drive_strength(card,
1325 card->ext_csd.hs200_max_dtr,
1326 card_drv_type, &drv_type);
Chanho Minfb458862017-09-26 09:03:40 +09001327
1328 card->drive_strength = drive_strength;
1329
1330 if (drv_type)
1331 mmc_set_driver_type(card->host, drv_type);
1332}
1333
Shawn Lin81ac2af2016-05-26 09:56:22 +08001334static int mmc_select_hs400es(struct mmc_card *card)
1335{
1336 struct mmc_host *host = card->host;
Haibo Chen92ddd9592017-08-08 18:54:01 +08001337 int err = -EINVAL;
Shawn Lin81ac2af2016-05-26 09:56:22 +08001338 u8 val;
1339
1340 if (!(host->caps & MMC_CAP_8_BIT_DATA)) {
1341 err = -ENOTSUPP;
1342 goto out_err;
1343 }
1344
Shawn Lin1720d352016-09-30 14:18:58 +08001345 if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400_1_2V)
Ulf Hansson4e74b6b2017-01-25 11:12:34 +01001346 err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120);
Shawn Lin1720d352016-09-30 14:18:58 +08001347
1348 if (err && card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400_1_8V)
Ulf Hansson4e74b6b2017-01-25 11:12:34 +01001349 err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180);
Shawn Lin1720d352016-09-30 14:18:58 +08001350
1351 /* If fails try again during next card power cycle */
1352 if (err)
1353 goto out_err;
1354
Shawn Lin81ac2af2016-05-26 09:56:22 +08001355 err = mmc_select_bus_width(card);
Hongjie Fang7f38abf2018-07-31 10:55:09 +08001356 if (err != MMC_BUS_WIDTH_8) {
1357 pr_err("%s: switch to 8bit bus width failed, err:%d\n",
1358 mmc_hostname(host), err);
1359 err = err < 0 ? err : -ENOTSUPP;
Shawn Lin81ac2af2016-05-26 09:56:22 +08001360 goto out_err;
Hongjie Fang7f38abf2018-07-31 10:55:09 +08001361 }
Shawn Lin81ac2af2016-05-26 09:56:22 +08001362
1363 /* Switch card to HS mode */
Ulf Hansson53e60652016-11-09 19:40:29 +01001364 err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
1365 EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS,
1366 card->ext_csd.generic_cmd6_time, 0,
Ulf Hansson02098cc2020-02-04 09:54:41 +01001367 false, true);
Ulf Hansson53e60652016-11-09 19:40:29 +01001368 if (err) {
1369 pr_err("%s: switch to hs for hs400es failed, err:%d\n",
1370 mmc_hostname(host), err);
1371 goto out_err;
1372 }
1373
1374 mmc_set_timing(host, MMC_TIMING_MMC_HS);
Ulf Hansson60db8a42020-02-04 09:54:40 +01001375 err = mmc_switch_status(card, true);
Jungseung Lee67d35962016-08-24 19:34:09 +09001376 if (err)
Shawn Lin81ac2af2016-05-26 09:56:22 +08001377 goto out_err;
Shawn Lin81ac2af2016-05-26 09:56:22 +08001378
Shawn Lin4f255802016-09-30 14:18:59 +08001379 mmc_set_clock(host, card->ext_csd.hs_max_dtr);
1380
Shawn Lin81ac2af2016-05-26 09:56:22 +08001381 /* Switch card to DDR with strobe bit */
1382 val = EXT_CSD_DDR_BUS_WIDTH_8 | EXT_CSD_BUS_WIDTH_STROBE;
1383 err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
1384 EXT_CSD_BUS_WIDTH,
1385 val,
1386 card->ext_csd.generic_cmd6_time);
1387 if (err) {
1388 pr_err("%s: switch to bus width for hs400es failed, err:%d\n",
1389 mmc_hostname(host), err);
1390 goto out_err;
1391 }
1392
Chanho Minfb458862017-09-26 09:03:40 +09001393 mmc_select_driver_type(card);
1394
Shawn Lin81ac2af2016-05-26 09:56:22 +08001395 /* Switch card to HS400 */
1396 val = EXT_CSD_TIMING_HS400 |
1397 card->drive_strength << EXT_CSD_DRV_STR_SHIFT;
1398 err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
1399 EXT_CSD_HS_TIMING, val,
Ulf Hanssonaa33ce32016-11-09 17:33:36 +01001400 card->ext_csd.generic_cmd6_time, 0,
Ulf Hansson02098cc2020-02-04 09:54:41 +01001401 false, true);
Shawn Lin81ac2af2016-05-26 09:56:22 +08001402 if (err) {
1403 pr_err("%s: switch to hs400es failed, err:%d\n",
1404 mmc_hostname(host), err);
1405 goto out_err;
1406 }
1407
1408 /* Set host controller to HS400 timing and frequency */
1409 mmc_set_timing(host, MMC_TIMING_MMC_HS400);
1410
1411 /* Controller enable enhanced strobe function */
1412 host->ios.enhanced_strobe = true;
1413 if (host->ops->hs400_enhanced_strobe)
1414 host->ops->hs400_enhanced_strobe(host, &host->ios);
1415
Ulf Hansson60db8a42020-02-04 09:54:40 +01001416 err = mmc_switch_status(card, true);
Shawn Lin81ac2af2016-05-26 09:56:22 +08001417 if (err)
1418 goto out_err;
1419
1420 return 0;
1421
1422out_err:
1423 pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host),
1424 __func__, err);
1425 return err;
1426}
1427
Seungwon Jeon577fb132014-04-23 17:08:44 +09001428/*
1429 * For device supporting HS200 mode, the following sequence
1430 * should be done before executing the tuning process.
1431 * 1. set the desired bus width(4-bit or 8-bit, 1-bit is not supported)
1432 * 2. switch to HS200 mode
1433 * 3. set the clock to > 52Mhz and <=200MHz
1434 */
1435static int mmc_select_hs200(struct mmc_card *card)
1436{
1437 struct mmc_host *host = card->host;
Dong Aishenge51534c2016-04-21 00:51:30 +08001438 unsigned int old_timing, old_signal_voltage;
Seungwon Jeon577fb132014-04-23 17:08:44 +09001439 int err = -EINVAL;
Adrian Huntercc4f4142015-02-06 14:12:58 +02001440 u8 val;
Seungwon Jeon577fb132014-04-23 17:08:44 +09001441
Dong Aishenge51534c2016-04-21 00:51:30 +08001442 old_signal_voltage = host->ios.signal_voltage;
Seungwon Jeon577fb132014-04-23 17:08:44 +09001443 if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_2V)
Ulf Hansson4e74b6b2017-01-25 11:12:34 +01001444 err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120);
Seungwon Jeon577fb132014-04-23 17:08:44 +09001445
1446 if (err && card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_8V)
Ulf Hansson4e74b6b2017-01-25 11:12:34 +01001447 err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180);
Seungwon Jeon577fb132014-04-23 17:08:44 +09001448
1449 /* If fails try again during next card power cycle */
1450 if (err)
Dong Aishenge51534c2016-04-21 00:51:30 +08001451 return err;
Seungwon Jeon577fb132014-04-23 17:08:44 +09001452
Adrian Huntercc4f4142015-02-06 14:12:58 +02001453 mmc_select_driver_type(card);
1454
Seungwon Jeon577fb132014-04-23 17:08:44 +09001455 /*
1456 * Set the bus width(4 or 8) with host's support and
1457 * switch to HS200 mode if bus width is set successfully.
1458 */
1459 err = mmc_select_bus_width(card);
Peter Griffin8b7be8f2016-06-08 11:27:52 +01001460 if (err > 0) {
Adrian Huntercc4f4142015-02-06 14:12:58 +02001461 val = EXT_CSD_TIMING_HS200 |
1462 card->drive_strength << EXT_CSD_DRV_STR_SHIFT;
Ulf Hansson4509f84772014-01-08 16:09:33 +01001463 err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
Adrian Huntercc4f4142015-02-06 14:12:58 +02001464 EXT_CSD_HS_TIMING, val,
Ulf Hanssonaa33ce32016-11-09 17:33:36 +01001465 card->ext_csd.generic_cmd6_time, 0,
Ulf Hansson02098cc2020-02-04 09:54:41 +01001466 false, true);
Adrian Hunter1815e612015-10-28 14:25:40 +02001467 if (err)
1468 goto err;
1469 old_timing = host->ios.timing;
1470 mmc_set_timing(host, MMC_TIMING_MMC_HS200);
Chaotian Jing08573ea2016-05-19 16:47:41 +08001471
Adrian Hunteref3d2322016-12-02 13:16:35 +02001472 /*
1473 * For HS200, CRC errors are not a reliable way to know the
1474 * switch failed. If there really is a problem, we would expect
1475 * tuning will fail and the result ends up the same.
1476 */
Ulf Hansson60db8a42020-02-04 09:54:40 +01001477 err = mmc_switch_status(card, false);
Adrian Hunteref3d2322016-12-02 13:16:35 +02001478
Chaotian Jing08573ea2016-05-19 16:47:41 +08001479 /*
1480 * mmc_select_timing() assumes timing has not changed if
1481 * it is a switch error.
1482 */
1483 if (err == -EBADMSG)
1484 mmc_set_timing(host, old_timing);
Seungwon Jeon577fb132014-04-23 17:08:44 +09001485 }
Girish K Sa4924c72012-01-11 14:04:52 -05001486err:
Dong Aishenge51534c2016-04-21 00:51:30 +08001487 if (err) {
1488 /* fall back to the old signal voltage, if fails report error */
Ulf Hansson4e74b6b2017-01-25 11:12:34 +01001489 if (mmc_set_signal_voltage(host, old_signal_voltage))
Dong Aishenge51534c2016-04-21 00:51:30 +08001490 err = -EIO;
1491
Adrian Hunter1815e612015-10-28 14:25:40 +02001492 pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host),
1493 __func__, err);
Dong Aishenge51534c2016-04-21 00:51:30 +08001494 }
Girish K Sa4924c72012-01-11 14:04:52 -05001495 return err;
1496}
1497
1498/*
Shawn Lin81ac2af2016-05-26 09:56:22 +08001499 * Activate High Speed, HS200 or HS400ES mode if supported.
Seungwon Jeon577fb132014-04-23 17:08:44 +09001500 */
1501static int mmc_select_timing(struct mmc_card *card)
1502{
1503 int err = 0;
1504
Ulf Hansson148bcab2014-10-20 11:33:53 +02001505 if (!mmc_can_ext_csd(card))
Seungwon Jeon577fb132014-04-23 17:08:44 +09001506 goto bus_speed;
1507
Shawn Lin81ac2af2016-05-26 09:56:22 +08001508 if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400ES)
1509 err = mmc_select_hs400es(card);
1510 else if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200)
Seungwon Jeon577fb132014-04-23 17:08:44 +09001511 err = mmc_select_hs200(card);
1512 else if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS)
1513 err = mmc_select_hs(card);
1514
1515 if (err && err != -EBADMSG)
1516 return err;
1517
Seungwon Jeon577fb132014-04-23 17:08:44 +09001518bus_speed:
1519 /*
1520 * Set the bus speed to the selected bus timing.
1521 * If timing is not selected, backward compatible is the default.
1522 */
1523 mmc_set_bus_speed(card);
Dong Aisheng0400ed02016-04-21 00:51:31 +08001524 return 0;
Seungwon Jeon577fb132014-04-23 17:08:44 +09001525}
1526
1527/*
1528 * Execute tuning sequence to seek the proper bus operating
Seungwon Jeon0a5b6432014-04-23 17:14:58 +09001529 * conditions for HS200 and HS400, which sends CMD21 to the device.
Seungwon Jeon577fb132014-04-23 17:08:44 +09001530 */
1531static int mmc_hs200_tuning(struct mmc_card *card)
1532{
1533 struct mmc_host *host = card->host;
Seungwon Jeon577fb132014-04-23 17:08:44 +09001534
Seungwon Jeon0a5b6432014-04-23 17:14:58 +09001535 /*
1536 * Timing should be adjusted to the HS400 target
1537 * operation frequency for tuning process
1538 */
1539 if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 &&
1540 host->ios.bus_width == MMC_BUS_WIDTH_8)
1541 if (host->ops->prepare_hs400_tuning)
1542 host->ops->prepare_hs400_tuning(host, &host->ios);
1543
Adrian Hunter63e415c2014-12-05 19:40:59 +02001544 return mmc_execute_tuning(card);
Seungwon Jeon577fb132014-04-23 17:08:44 +09001545}
1546
1547/*
Pierre Ossman6abaa0c2007-05-01 16:00:02 +02001548 * Handle the detection and initialisation of a card.
1549 *
Deepak Saxena87693922008-06-16 19:20:57 -07001550 * In the case of a resume, "oldcard" will contain the card
Pierre Ossman6abaa0c2007-05-01 16:00:02 +02001551 * we're trying to reinitialise.
Pierre Ossman7ea239d2006-12-31 00:11:32 +01001552 */
Pierre Ossman8c75dea2007-05-19 16:14:43 +02001553static int mmc_init_card(struct mmc_host *host, u32 ocr,
Pierre Ossman6abaa0c2007-05-01 16:00:02 +02001554 struct mmc_card *oldcard)
Pierre Ossman7ea239d2006-12-31 00:11:32 +01001555{
1556 struct mmc_card *card;
Seungwon Jeon577fb132014-04-23 17:08:44 +09001557 int err;
Pierre Ossman7ea239d2006-12-31 00:11:32 +01001558 u32 cid[4];
Philip Rakityb676f032011-02-13 23:13:09 -08001559 u32 rocr;
Pierre Ossman7ea239d2006-12-31 00:11:32 +01001560
Pierre Ossmand84075c82007-08-09 13:23:56 +02001561 WARN_ON(!host->claimed);
Pierre Ossman7ea239d2006-12-31 00:11:32 +01001562
Stefan Nilsson XK44669032011-09-15 17:50:38 +02001563 /* Set correct bus mode for MMC before attempting init */
1564 if (!mmc_host_is_spi(host))
1565 mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN);
1566
Pierre Ossman7ea239d2006-12-31 00:11:32 +01001567 /*
1568 * Since we're changing the OCR value, we seem to
1569 * need to tell some cards to go back to the idle
1570 * state. We wait 1ms to give cards time to
1571 * respond.
Balaji T Kc3805462011-09-08 22:08:39 +05301572 * mmc_go_idle is needed for eMMC that are asleep
Pierre Ossman7ea239d2006-12-31 00:11:32 +01001573 */
1574 mmc_go_idle(host);
1575
1576 /* The extra bit indicates that we support high capacity */
Philip Rakityb676f032011-02-13 23:13:09 -08001577 err = mmc_send_op_cond(host, ocr | (1 << 30), &rocr);
Pierre Ossman17b04292007-07-22 22:18:46 +02001578 if (err)
Pierre Ossman6abaa0c2007-05-01 16:00:02 +02001579 goto err;
Pierre Ossman7ea239d2006-12-31 00:11:32 +01001580
1581 /*
David Brownellaf517152007-08-08 09:11:32 -07001582 * For SPI, enable CRC as appropriate.
1583 */
1584 if (mmc_host_is_spi(host)) {
1585 err = mmc_spi_set_crc(host, use_spi_crc);
1586 if (err)
1587 goto err;
1588 }
1589
1590 /*
Pierre Ossman7ea239d2006-12-31 00:11:32 +01001591 * Fetch CID from card.
1592 */
Ulf Hanssona1473732017-06-08 15:27:43 +02001593 err = mmc_send_cid(host, cid);
Pierre Ossman17b04292007-07-22 22:18:46 +02001594 if (err)
Pierre Ossman7ea239d2006-12-31 00:11:32 +01001595 goto err;
1596
Pierre Ossman6abaa0c2007-05-01 16:00:02 +02001597 if (oldcard) {
Pierre Ossmanadf66a02007-07-22 23:08:30 +02001598 if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) {
hongjiefang099b6482019-02-28 14:08:28 +08001599 pr_debug("%s: Perhaps the card was replaced\n",
1600 mmc_hostname(host));
Pierre Ossmanadf66a02007-07-22 23:08:30 +02001601 err = -ENOENT;
Pierre Ossman6abaa0c2007-05-01 16:00:02 +02001602 goto err;
Pierre Ossmanadf66a02007-07-22 23:08:30 +02001603 }
Pierre Ossman7ea239d2006-12-31 00:11:32 +01001604
Pierre Ossman6abaa0c2007-05-01 16:00:02 +02001605 card = oldcard;
1606 } else {
1607 /*
1608 * Allocate card structure.
1609 */
Pierre Ossman51ec92e2008-03-21 23:54:50 +01001610 card = mmc_alloc_card(host, &mmc_type);
Pierre Ossmanadf66a02007-07-22 23:08:30 +02001611 if (IS_ERR(card)) {
1612 err = PTR_ERR(card);
Pierre Ossman6abaa0c2007-05-01 16:00:02 +02001613 goto err;
Pierre Ossmanadf66a02007-07-22 23:08:30 +02001614 }
Pierre Ossman6abaa0c2007-05-01 16:00:02 +02001615
Ulf Hansson69041152013-09-13 11:31:33 +02001616 card->ocr = ocr;
Pierre Ossman6abaa0c2007-05-01 16:00:02 +02001617 card->type = MMC_TYPE_MMC;
1618 card->rca = 1;
1619 memcpy(card->raw_cid, cid, sizeof(card->raw_cid));
1620 }
Pierre Ossman7ea239d2006-12-31 00:11:32 +01001621
1622 /*
Doug Andersoneac86322014-12-02 15:42:45 -08001623 * Call the optional HC's init_card function to handle quirks.
1624 */
1625 if (host->ops->init_card)
1626 host->ops->init_card(host, card);
1627
1628 /*
David Brownellaf517152007-08-08 09:11:32 -07001629 * For native busses: set card RCA and quit open drain mode.
Pierre Ossman7ea239d2006-12-31 00:11:32 +01001630 */
David Brownellaf517152007-08-08 09:11:32 -07001631 if (!mmc_host_is_spi(host)) {
1632 err = mmc_set_relative_addr(card);
1633 if (err)
1634 goto free_card;
Pierre Ossman7ea239d2006-12-31 00:11:32 +01001635
David Brownellaf517152007-08-08 09:11:32 -07001636 mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL);
1637 }
Pierre Ossman7ea239d2006-12-31 00:11:32 +01001638
Pierre Ossman6abaa0c2007-05-01 16:00:02 +02001639 if (!oldcard) {
1640 /*
1641 * Fetch CSD from card.
1642 */
1643 err = mmc_send_csd(card, card->raw_csd);
Pierre Ossman17b04292007-07-22 22:18:46 +02001644 if (err)
Pierre Ossman6abaa0c2007-05-01 16:00:02 +02001645 goto free_card;
Pierre Ossman7ea239d2006-12-31 00:11:32 +01001646
Pierre Ossmanbd766312007-05-01 16:11:57 +02001647 err = mmc_decode_csd(card);
Pierre Ossmanadf66a02007-07-22 23:08:30 +02001648 if (err)
Pierre Ossmanbd766312007-05-01 16:11:57 +02001649 goto free_card;
1650 err = mmc_decode_cid(card);
Pierre Ossmanadf66a02007-07-22 23:08:30 +02001651 if (err)
Pierre Ossmanbd766312007-05-01 16:11:57 +02001652 goto free_card;
Pierre Ossman6abaa0c2007-05-01 16:00:02 +02001653 }
Pierre Ossman7ea239d2006-12-31 00:11:32 +01001654
1655 /*
Sascha Hauer3d705d12014-08-19 10:45:51 +02001656 * handling only for cards supporting DSR and hosts requesting
1657 * DSR configuration
1658 */
1659 if (card->csd.dsr_imp && host->dsr_req)
1660 mmc_set_dsr(host);
1661
1662 /*
Pierre Ossman89a73cf2007-05-01 15:08:30 +02001663 * Select card, as all following commands rely on that.
Pierre Ossman7ea239d2006-12-31 00:11:32 +01001664 */
David Brownellaf517152007-08-08 09:11:32 -07001665 if (!mmc_host_is_spi(host)) {
1666 err = mmc_select_card(card);
1667 if (err)
1668 goto free_card;
1669 }
Pierre Ossman7ea239d2006-12-31 00:11:32 +01001670
Pierre Ossman6abaa0c2007-05-01 16:00:02 +02001671 if (!oldcard) {
Ulf Hansson076ec382014-10-20 13:37:24 +02001672 /* Read extended CSD. */
1673 err = mmc_read_ext_csd(card);
Pierre Ossman17b04292007-07-22 22:18:46 +02001674 if (err)
Pierre Ossman6abaa0c2007-05-01 16:00:02 +02001675 goto free_card;
Philip Rakityb676f032011-02-13 23:13:09 -08001676
Masahiro Yamada87e88652016-04-15 20:16:12 +09001677 /*
1678 * If doing byte addressing, check if required to do sector
Philip Rakityb676f032011-02-13 23:13:09 -08001679 * addressing. Handle the case of <2GB cards needing sector
1680 * addressing. See section 8.1 JEDEC Standard JED84-A441;
1681 * ocr register has bit 30 set for sector addressing.
1682 */
Masahiro Yamada87e88652016-04-15 20:16:12 +09001683 if (rocr & BIT(30))
Philip Rakityb676f032011-02-13 23:13:09 -08001684 mmc_card_set_blockaddr(card);
1685
Adrian Hunterdfe86cb2010-08-11 14:17:46 -07001686 /* Erase size depends on CSD and Extended CSD */
1687 mmc_set_erase_size(card);
Pierre Ossman6abaa0c2007-05-01 16:00:02 +02001688 }
Pierre Ossman7ea239d2006-12-31 00:11:32 +01001689
Ulf Hanssond2a47172017-06-08 15:23:08 +02001690 /* Enable ERASE_GRP_DEF. This bit is lost after a reset or power off. */
1691 if (card->ext_csd.rev >= 3) {
Chuanxiao Dong709de99d2011-01-22 04:09:41 +08001692 err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
Seungwon Jeonb23cf0b2011-09-23 14:15:29 +09001693 EXT_CSD_ERASE_GROUP_DEF, 1,
1694 card->ext_csd.generic_cmd6_time);
Chuanxiao Dong709de99d2011-01-22 04:09:41 +08001695
1696 if (err && err != -EBADMSG)
1697 goto free_card;
1698
1699 if (err) {
1700 err = 0;
1701 /*
1702 * Just disable enhanced area off & sz
1703 * will try to enable ERASE_GROUP_DEF
1704 * during next time reinit
1705 */
1706 card->ext_csd.enhanced_area_offset = -EINVAL;
1707 card->ext_csd.enhanced_area_size = -EINVAL;
1708 } else {
1709 card->ext_csd.erase_group_def = 1;
1710 /*
1711 * enable ERASE_GRP_DEF successfully.
1712 * This will affect the erase size, so
1713 * here need to reset erase size
1714 */
1715 mmc_set_erase_size(card);
1716 }
1717 }
1718
1719 /*
Philip Rakity41e2a482011-03-19 14:10:33 -04001720 * Ensure eMMC user default partition is enabled
1721 */
Andrei Warkentin371a6892011-04-11 18:10:25 -05001722 if (card->ext_csd.part_config & EXT_CSD_PART_CONFIG_ACC_MASK) {
1723 card->ext_csd.part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK;
1724 err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONFIG,
1725 card->ext_csd.part_config,
1726 card->ext_csd.part_time);
1727 if (err && err != -EBADMSG)
1728 goto free_card;
Philip Rakity41e2a482011-03-19 14:10:33 -04001729 }
1730
1731 /*
Ulf Hansson432356792013-06-10 17:03:45 +02001732 * Enable power_off_notification byte in the ext_csd register
Girish K Sbec87262011-10-13 12:04:16 +05301733 */
Ulf Hansson432356792013-06-10 17:03:45 +02001734 if (card->ext_csd.rev >= 6) {
Girish K Sbec87262011-10-13 12:04:16 +05301735 err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
1736 EXT_CSD_POWER_OFF_NOTIFICATION,
1737 EXT_CSD_POWER_ON,
1738 card->ext_csd.generic_cmd6_time);
1739 if (err && err != -EBADMSG)
1740 goto free_card;
Girish K Sbec87262011-10-13 12:04:16 +05301741
Girish K S96a85d52011-11-04 16:22:47 +05301742 /*
1743 * The err can be -EBADMSG or 0,
1744 * so check for success and update the flag
1745 */
1746 if (!err)
Ulf Hanssone6c08582012-10-05 12:45:39 -04001747 card->ext_csd.power_off_notification = EXT_CSD_POWER_ON;
Girish K S96a85d52011-11-04 16:22:47 +05301748 }
Girish K Sbec87262011-10-13 12:04:16 +05301749
Avri Altman01904ff2019-02-06 13:28:05 +02001750 /* set erase_arg */
1751 if (mmc_can_discard(card))
1752 card->erase_arg = MMC_DISCARD_ARG;
1753 else if (mmc_can_trim(card))
1754 card->erase_arg = MMC_TRIM_ARG;
1755 else
1756 card->erase_arg = MMC_ERASE_ARG;
1757
Girish K Sbec87262011-10-13 12:04:16 +05301758 /*
Seungwon Jeon577fb132014-04-23 17:08:44 +09001759 * Select timing interface
Pierre Ossman89a73cf2007-05-01 15:08:30 +02001760 */
Seungwon Jeon577fb132014-04-23 17:08:44 +09001761 err = mmc_select_timing(card);
1762 if (err)
1763 goto free_card;
Girish K Sa4924c72012-01-11 14:04:52 -05001764
Girish K Sa4924c72012-01-11 14:04:52 -05001765 if (mmc_card_hs200(card)) {
Seungwon Jeon577fb132014-04-23 17:08:44 +09001766 err = mmc_hs200_tuning(card);
1767 if (err)
Andrew Gabbasov4b75bff2014-10-01 07:14:11 -05001768 goto free_card;
Seungwon Jeon0a5b6432014-04-23 17:14:58 +09001769
1770 err = mmc_select_hs400(card);
1771 if (err)
Andrew Gabbasov4b75bff2014-10-01 07:14:11 -05001772 goto free_card;
Guenter Roeck773dc112017-03-01 14:11:47 -08001773 } else if (!mmc_card_hs400es(card)) {
Seungwon Jeon577fb132014-04-23 17:08:44 +09001774 /* Select the desired bus width optionally */
1775 err = mmc_select_bus_width(card);
Anssi Hannula3d4ef322017-02-13 13:46:41 +02001776 if (err > 0 && mmc_card_hs(card)) {
Seungwon Jeon577fb132014-04-23 17:08:44 +09001777 err = mmc_select_hs_ddr(card);
1778 if (err)
Andrew Gabbasov4b75bff2014-10-01 07:14:11 -05001779 goto free_card;
Adrian Hunteref0b27d2009-09-22 16:44:37 -07001780 }
Pierre Ossman89a73cf2007-05-01 15:08:30 +02001781 }
1782
Seungwon Jeon881d1c22011-10-14 14:03:21 +09001783 /*
Seungwon Jeon23850492014-04-23 17:08:05 +09001784 * Choose the power class with selected bus interface
1785 */
1786 mmc_select_powerclass(card);
1787
1788 /*
Subhash Jadavani52d09742012-03-06 17:59:12 +05301789 * Enable HPI feature (if supported)
1790 */
1791 if (card->ext_csd.hpi) {
1792 err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
1793 EXT_CSD_HPI_MGMT, 1,
1794 card->ext_csd.generic_cmd6_time);
1795 if (err && err != -EBADMSG)
1796 goto free_card;
1797 if (err) {
Joe Perches66061102014-09-12 14:56:56 -07001798 pr_warn("%s: Enabling HPI failed\n",
1799 mmc_hostname(card->host));
Ulf Hanssona0741ba2018-12-10 17:52:36 +01001800 card->ext_csd.hpi_en = 0;
Subhash Jadavani52d09742012-03-06 17:59:12 +05301801 err = 0;
Ulf Hanssona0741ba2018-12-10 17:52:36 +01001802 } else {
Subhash Jadavani52d09742012-03-06 17:59:12 +05301803 card->ext_csd.hpi_en = 1;
Ulf Hanssona0741ba2018-12-10 17:52:36 +01001804 }
Subhash Jadavani52d09742012-03-06 17:59:12 +05301805 }
1806
1807 /*
Ulf Hanssone3ae3402018-12-10 17:52:38 +01001808 * If cache size is higher than 0, this indicates the existence of cache
1809 * and it can be turned on. Note that some eMMCs from Micron has been
1810 * reported to need ~800 ms timeout, while enabling the cache after
1811 * sudden power failure tests. Let's extend the timeout to a minimum of
1812 * DEFAULT_CACHE_EN_TIMEOUT_MS and do it for all cards.
Seungwon Jeon881d1c22011-10-14 14:03:21 +09001813 */
Ulf Hanssonba9f39a2018-12-10 17:52:37 +01001814 if (card->ext_csd.cache_size > 0) {
Ulf Hanssone3ae3402018-12-10 17:52:38 +01001815 unsigned int timeout_ms = MIN_CACHE_EN_TIMEOUT_MS;
1816
1817 timeout_ms = max(card->ext_csd.generic_cmd6_time, timeout_ms);
Seungwon Jeon881d1c22011-10-14 14:03:21 +09001818 err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
Ulf Hanssone3ae3402018-12-10 17:52:38 +01001819 EXT_CSD_CACHE_CTRL, 1, timeout_ms);
Seungwon Jeon881d1c22011-10-14 14:03:21 +09001820 if (err && err != -EBADMSG)
1821 goto free_card;
1822
1823 /*
1824 * Only if no error, cache is turned on successfully.
1825 */
Seungwon Jeon8bc06782011-12-09 17:47:17 +09001826 if (err) {
Joe Perches66061102014-09-12 14:56:56 -07001827 pr_warn("%s: Cache is supported, but failed to turn on (%d)\n",
1828 mmc_hostname(card->host), err);
Seungwon Jeon8bc06782011-12-09 17:47:17 +09001829 card->ext_csd.cache_ctrl = 0;
1830 err = 0;
1831 } else {
1832 card->ext_csd.cache_ctrl = 1;
1833 }
Seungwon Jeon881d1c22011-10-14 14:03:21 +09001834 }
1835
Seungwon Jeonabd9ac12013-02-06 17:01:43 +09001836 /*
Adrian Hunter98d4f782017-09-22 15:36:53 +03001837 * Enable Command Queue if supported. Note that Packed Commands cannot
1838 * be used with Command Queue.
1839 */
1840 card->ext_csd.cmdq_en = false;
1841 if (card->ext_csd.cmdq_support && host->caps2 & MMC_CAP2_CQE) {
1842 err = mmc_cmdq_enable(card);
1843 if (err && err != -EBADMSG)
1844 goto free_card;
1845 if (err) {
1846 pr_warn("%s: Enabling CMDQ failed\n",
1847 mmc_hostname(card->host));
1848 card->ext_csd.cmdq_support = false;
1849 card->ext_csd.cmdq_depth = 0;
1850 err = 0;
1851 }
1852 }
1853 /*
Adrian Hunter9d4579a2017-03-13 14:36:38 +02001854 * In some cases (e.g. RPMB or mmc_test), the Command Queue must be
1855 * disabled for a time, so a flag is needed to indicate to re-enable the
1856 * Command Queue.
1857 */
1858 card->reenable_cmdq = card->ext_csd.cmdq_en;
1859
Baolin Wang511ce372020-02-12 12:12:56 +08001860 if (host->cqe_ops && !host->cqe_enabled) {
Adrian Hunterf690f442017-09-22 15:36:54 +03001861 err = host->cqe_ops->cqe_enable(host, card);
Baolin Wang511ce372020-02-12 12:12:56 +08001862 if (!err) {
Adrian Hunterf690f442017-09-22 15:36:54 +03001863 host->cqe_enabled = true;
Baolin Wang511ce372020-02-12 12:12:56 +08001864
1865 if (card->ext_csd.cmdq_en) {
1866 pr_info("%s: Command Queue Engine enabled\n",
1867 mmc_hostname(host));
1868 } else {
1869 host->hsq_enabled = true;
1870 pr_info("%s: Host Software Queue enabled\n",
1871 mmc_hostname(host));
1872 }
Adrian Hunterf690f442017-09-22 15:36:54 +03001873 }
1874 }
1875
Kyle Roeschley247cfe52018-04-13 16:54:57 -05001876 if (host->caps2 & MMC_CAP2_AVOID_3_3V &&
1877 host->ios.signal_voltage == MMC_SIGNAL_VOLTAGE_330) {
1878 pr_err("%s: Host failed to negotiate down from 3.3V\n",
1879 mmc_hostname(host));
1880 err = -EINVAL;
1881 goto free_card;
1882 }
1883
Pierre Ossman6abaa0c2007-05-01 16:00:02 +02001884 if (!oldcard)
1885 host->card = card;
1886
Pierre Ossman17b04292007-07-22 22:18:46 +02001887 return 0;
Pierre Ossman6abaa0c2007-05-01 16:00:02 +02001888
1889free_card:
1890 if (!oldcard)
1891 mmc_remove_card(card);
1892err:
Pierre Ossmanadf66a02007-07-22 23:08:30 +02001893 return err;
Pierre Ossman6abaa0c2007-05-01 16:00:02 +02001894}
1895
Ulf Hansson07a68212013-04-19 15:12:11 +02001896static int mmc_can_sleep(struct mmc_card *card)
1897{
1898 return (card && card->ext_csd.rev >= 3);
1899}
1900
1901static int mmc_sleep(struct mmc_host *host)
1902{
Masahiro Yamadac7836d12016-12-19 20:51:18 +09001903 struct mmc_command cmd = {};
Ulf Hansson07a68212013-04-19 15:12:11 +02001904 struct mmc_card *card = host->card;
Ulf Hanssoncb962e02014-01-14 23:17:36 +01001905 unsigned int timeout_ms = DIV_ROUND_UP(card->ext_csd.sa_timeout, 10000);
Ulf Hansson07a68212013-04-19 15:12:11 +02001906 int err;
1907
Adrian Hunter436f8da2015-05-07 13:10:18 +03001908 /* Re-tuning can't be done once the card is deselected */
1909 mmc_retune_hold(host);
1910
Ulf Hansson07a68212013-04-19 15:12:11 +02001911 err = mmc_deselect_cards(host);
1912 if (err)
Adrian Hunter436f8da2015-05-07 13:10:18 +03001913 goto out_release;
Ulf Hansson07a68212013-04-19 15:12:11 +02001914
1915 cmd.opcode = MMC_SLEEP_AWAKE;
1916 cmd.arg = card->rca << 16;
1917 cmd.arg |= 1 << 15;
1918
Ulf Hanssoncb962e02014-01-14 23:17:36 +01001919 /*
1920 * If the max_busy_timeout of the host is specified, validate it against
1921 * the sleep cmd timeout. A failure means we need to prevent the host
1922 * from doing hw busy detection, which is done by converting to a R1
Ulf Hansson18d20042020-03-11 10:20:36 +01001923 * response instead of a R1B. Note, some hosts requires R1B, which also
1924 * means they are on their own when it comes to deal with the busy
1925 * timeout.
Ulf Hanssoncb962e02014-01-14 23:17:36 +01001926 */
Ulf Hansson18d20042020-03-11 10:20:36 +01001927 if (!(host->caps & MMC_CAP_NEED_RSP_BUSY) && host->max_busy_timeout &&
1928 (timeout_ms > host->max_busy_timeout)) {
Ulf Hanssoncb962e02014-01-14 23:17:36 +01001929 cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
1930 } else {
1931 cmd.flags = MMC_RSP_R1B | MMC_CMD_AC;
1932 cmd.busy_timeout = timeout_ms;
1933 }
1934
Ulf Hansson07a68212013-04-19 15:12:11 +02001935 err = mmc_wait_for_cmd(host, &cmd, 0);
1936 if (err)
Adrian Hunter436f8da2015-05-07 13:10:18 +03001937 goto out_release;
Ulf Hansson07a68212013-04-19 15:12:11 +02001938
1939 /*
1940 * If the host does not wait while the card signals busy, then we will
1941 * will have to wait the sleep/awake timeout. Note, we cannot use the
1942 * SEND_STATUS command to poll the status because that command (and most
1943 * others) is invalid while the card sleeps.
1944 */
Ulf Hanssoncb962e02014-01-14 23:17:36 +01001945 if (!cmd.busy_timeout || !(host->caps & MMC_CAP_WAIT_WHILE_BUSY))
1946 mmc_delay(timeout_ms);
Ulf Hansson07a68212013-04-19 15:12:11 +02001947
Adrian Hunter436f8da2015-05-07 13:10:18 +03001948out_release:
1949 mmc_retune_release(host);
Ulf Hansson07a68212013-04-19 15:12:11 +02001950 return err;
1951}
1952
Ulf Hanssone6c08582012-10-05 12:45:39 -04001953static int mmc_can_poweroff_notify(const struct mmc_card *card)
1954{
1955 return card &&
1956 mmc_card_mmc(card) &&
1957 (card->ext_csd.power_off_notification == EXT_CSD_POWER_ON);
1958}
1959
1960static int mmc_poweroff_notify(struct mmc_card *card, unsigned int notify_type)
1961{
1962 unsigned int timeout = card->ext_csd.generic_cmd6_time;
1963 int err;
1964
1965 /* Use EXT_CSD_POWER_OFF_SHORT as default notification type. */
1966 if (notify_type == EXT_CSD_POWER_OFF_LONG)
1967 timeout = card->ext_csd.power_off_longtime;
1968
Ulf Hansson878e2002013-09-09 11:57:57 +02001969 err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
1970 EXT_CSD_POWER_OFF_NOTIFICATION,
Ulf Hansson02098cc2020-02-04 09:54:41 +01001971 notify_type, timeout, 0, false, false);
Ulf Hanssone6c08582012-10-05 12:45:39 -04001972 if (err)
1973 pr_err("%s: Power Off Notification timed out, %u\n",
1974 mmc_hostname(card->host), timeout);
1975
1976 /* Disable the power off notification after the switch operation. */
1977 card->ext_csd.power_off_notification = EXT_CSD_NO_POWER_NOTIFICATION;
1978
1979 return err;
1980}
1981
Pierre Ossman6abaa0c2007-05-01 16:00:02 +02001982/*
1983 * Host is being removed. Free up the current card.
1984 */
1985static void mmc_remove(struct mmc_host *host)
1986{
Pierre Ossman6abaa0c2007-05-01 16:00:02 +02001987 mmc_remove_card(host->card);
1988 host->card = NULL;
1989}
1990
1991/*
Adrian Hunterd3049502011-11-28 16:22:00 +02001992 * Card detection - card is alive.
1993 */
1994static int mmc_alive(struct mmc_host *host)
1995{
1996 return mmc_send_status(host->card, NULL);
1997}
1998
1999/*
Pierre Ossman6abaa0c2007-05-01 16:00:02 +02002000 * Card detection callback from host.
2001 */
2002static void mmc_detect(struct mmc_host *host)
2003{
2004 int err;
2005
Adrian Hunter6c0cedd2017-09-22 15:36:51 +03002006 mmc_get_card(host->card, NULL);
Pierre Ossman6abaa0c2007-05-01 16:00:02 +02002007
2008 /*
2009 * Just check if our card has been removed.
2010 */
Adrian Hunterd3049502011-11-28 16:22:00 +02002011 err = _mmc_detect_card_removed(host);
Pierre Ossman7ea239d2006-12-31 00:11:32 +01002012
Adrian Hunter6c0cedd2017-09-22 15:36:51 +03002013 mmc_put_card(host->card, NULL);
Pierre Ossman7ea239d2006-12-31 00:11:32 +01002014
Pierre Ossman17b04292007-07-22 22:18:46 +02002015 if (err) {
Pierre Ossman4101c162007-05-19 13:39:01 +02002016 mmc_remove(host);
Pierre Ossman6abaa0c2007-05-01 16:00:02 +02002017
2018 mmc_claim_host(host);
2019 mmc_detach_bus(host);
Ulf Hansson7f7e4122011-09-21 14:08:13 -04002020 mmc_power_off(host);
Pierre Ossman6abaa0c2007-05-01 16:00:02 +02002021 mmc_release_host(host);
2022 }
2023}
2024
Ulf Hansson03d071f2013-06-10 17:03:43 +02002025static int _mmc_suspend(struct mmc_host *host, bool is_suspend)
Pierre Ossman6abaa0c2007-05-01 16:00:02 +02002026{
Balaji T Kc3805462011-09-08 22:08:39 +05302027 int err = 0;
Ulf Hansson03d071f2013-06-10 17:03:43 +02002028 unsigned int notify_type = is_suspend ? EXT_CSD_POWER_OFF_SHORT :
2029 EXT_CSD_POWER_OFF_LONG;
Balaji T Kc3805462011-09-08 22:08:39 +05302030
Pierre Ossman6abaa0c2007-05-01 16:00:02 +02002031 mmc_claim_host(host);
Maya Erez881d9262013-01-28 16:44:22 -05002032
Ulf Hansson9ec775f2013-10-02 17:37:09 +02002033 if (mmc_card_suspended(host->card))
2034 goto out;
2035
Ulf Hansson10e5d962013-12-16 16:23:22 +01002036 err = mmc_flush_cache(host->card);
Maya Erez881d9262013-01-28 16:44:22 -05002037 if (err)
2038 goto out;
2039
Ulf Hansson432356792013-06-10 17:03:45 +02002040 if (mmc_can_poweroff_notify(host->card) &&
Yoshihiro Shimodaec027602020-07-07 20:58:42 +09002041 ((host->caps2 & MMC_CAP2_FULL_PWR_CYCLE) || !is_suspend ||
2042 (host->caps2 & MMC_CAP2_FULL_PWR_CYCLE_IN_SUSPEND)))
Ulf Hansson03d071f2013-06-10 17:03:43 +02002043 err = mmc_poweroff_notify(host->card, notify_type);
Ulf Hansson07a68212013-04-19 15:12:11 +02002044 else if (mmc_can_sleep(host->card))
2045 err = mmc_sleep(host);
Ulf Hanssone6c08582012-10-05 12:45:39 -04002046 else if (!mmc_host_is_spi(host))
Jaehoon Chung85e727e2012-05-31 20:31:47 +09002047 err = mmc_deselect_cards(host);
Nicolas Pitre95cdfb72009-09-22 16:45:29 -07002048
Ulf Hansson9ec775f2013-10-02 17:37:09 +02002049 if (!err) {
Ulf Hansson74590262013-06-10 17:03:38 +02002050 mmc_power_off(host);
Ulf Hansson9ec775f2013-10-02 17:37:09 +02002051 mmc_card_set_suspended(host->card);
2052 }
Maya Erez881d9262013-01-28 16:44:22 -05002053out:
2054 mmc_release_host(host);
Balaji T Kc3805462011-09-08 22:08:39 +05302055 return err;
Pierre Ossman6abaa0c2007-05-01 16:00:02 +02002056}
2057
2058/*
Ulf Hansson0cb403a2013-10-10 14:20:05 +02002059 * Suspend callback
Ulf Hansson03d071f2013-06-10 17:03:43 +02002060 */
2061static int mmc_suspend(struct mmc_host *host)
2062{
Ulf Hansson0cb403a2013-10-10 14:20:05 +02002063 int err;
2064
2065 err = _mmc_suspend(host, true);
2066 if (!err) {
2067 pm_runtime_disable(&host->card->dev);
2068 pm_runtime_set_suspended(&host->card->dev);
2069 }
2070
2071 return err;
Ulf Hansson03d071f2013-06-10 17:03:43 +02002072}
2073
2074/*
Pierre Ossman6abaa0c2007-05-01 16:00:02 +02002075 * This function tries to determine if the same card is still present
2076 * and, if so, restore all state to it.
2077 */
Ulf Hansson0cb403a2013-10-10 14:20:05 +02002078static int _mmc_resume(struct mmc_host *host)
Pierre Ossman6abaa0c2007-05-01 16:00:02 +02002079{
Ulf Hansson9ec775f2013-10-02 17:37:09 +02002080 int err = 0;
Pierre Ossman6abaa0c2007-05-01 16:00:02 +02002081
Pierre Ossman6abaa0c2007-05-01 16:00:02 +02002082 mmc_claim_host(host);
Ulf Hansson9ec775f2013-10-02 17:37:09 +02002083
2084 if (!mmc_card_suspended(host->card))
2085 goto out;
2086
Ulf Hansson69041152013-09-13 11:31:33 +02002087 mmc_power_up(host, host->card->ocr);
Ulf Hansson69041152013-09-13 11:31:33 +02002088 err = mmc_init_card(host, host->card->ocr, host->card);
Ulf Hansson9ec775f2013-10-02 17:37:09 +02002089 mmc_card_clr_suspended(host->card);
Pierre Ossman2986d0b2007-07-22 17:52:06 +02002090
Ulf Hansson9ec775f2013-10-02 17:37:09 +02002091out:
2092 mmc_release_host(host);
Nicolas Pitre95cdfb72009-09-22 16:45:29 -07002093 return err;
Pierre Ossman6abaa0c2007-05-01 16:00:02 +02002094}
2095
Ulf Hansson9ec775f2013-10-02 17:37:09 +02002096/*
2097 * Shutdown callback
2098 */
2099static int mmc_shutdown(struct mmc_host *host)
2100{
2101 int err = 0;
2102
2103 /*
2104 * In a specific case for poweroff notify, we need to resume the card
2105 * before we can shutdown it properly.
2106 */
2107 if (mmc_can_poweroff_notify(host->card) &&
2108 !(host->caps2 & MMC_CAP2_FULL_PWR_CYCLE))
Ulf Hansson0cb403a2013-10-10 14:20:05 +02002109 err = _mmc_resume(host);
Ulf Hansson9ec775f2013-10-02 17:37:09 +02002110
2111 if (!err)
2112 err = _mmc_suspend(host, false);
2113
2114 return err;
2115}
Ulf Hanssonc4d770d2013-05-02 14:02:39 +02002116
2117/*
Ulf Hansson0cb403a2013-10-10 14:20:05 +02002118 * Callback for resume.
2119 */
2120static int mmc_resume(struct mmc_host *host)
2121{
Ulf Hansson0cb403a2013-10-10 14:20:05 +02002122 pm_runtime_enable(&host->card->dev);
Ulf Hanssonc29536e2015-11-05 16:01:32 +01002123 return 0;
Ulf Hansson0cb403a2013-10-10 14:20:05 +02002124}
2125
2126/*
Ulf Hanssonc4d770d2013-05-02 14:02:39 +02002127 * Callback for runtime_suspend.
2128 */
2129static int mmc_runtime_suspend(struct mmc_host *host)
2130{
2131 int err;
2132
2133 if (!(host->caps & MMC_CAP_AGGRESSIVE_PM))
2134 return 0;
2135
Ulf Hansson0cb403a2013-10-10 14:20:05 +02002136 err = _mmc_suspend(host, true);
Ulf Hansson0cc81a82013-10-03 11:24:44 +02002137 if (err)
Masanari Iidaf42cf8d2015-02-24 23:11:26 +09002138 pr_err("%s: error %d doing aggressive suspend\n",
Ulf Hanssonc4d770d2013-05-02 14:02:39 +02002139 mmc_hostname(host), err);
Ulf Hanssonc4d770d2013-05-02 14:02:39 +02002140
Ulf Hanssonc4d770d2013-05-02 14:02:39 +02002141 return err;
2142}
2143
2144/*
2145 * Callback for runtime_resume.
2146 */
2147static int mmc_runtime_resume(struct mmc_host *host)
2148{
2149 int err;
2150
Ulf Hansson0cb403a2013-10-10 14:20:05 +02002151 err = _mmc_resume(host);
Adrian Hunter520322d2015-12-14 15:51:27 +02002152 if (err && err != -ENOMEDIUM)
Ulf Hanssonc29536e2015-11-05 16:01:32 +01002153 pr_err("%s: error %d doing runtime resume\n",
Ulf Hanssonc4d770d2013-05-02 14:02:39 +02002154 mmc_hostname(host), err);
2155
Ulf Hanssonc4d770d2013-05-02 14:02:39 +02002156 return 0;
2157}
2158
Ulf Hansson88bed3a2017-06-08 15:27:41 +02002159static int mmc_can_reset(struct mmc_card *card)
Johan Rudholmf855a372015-01-12 15:38:05 +01002160{
2161 u8 rst_n_function;
2162
2163 rst_n_function = card->ext_csd.rst_n_function;
2164 if ((rst_n_function & EXT_CSD_RST_N_EN_MASK) != EXT_CSD_RST_N_ENABLED)
2165 return 0;
2166 return 1;
2167}
Johan Rudholmf855a372015-01-12 15:38:05 +01002168
Ulf Hansson3a3db602018-04-05 13:24:43 +02002169static int _mmc_hw_reset(struct mmc_host *host)
Johan Rudholmf855a372015-01-12 15:38:05 +01002170{
2171 struct mmc_card *card = host->card;
Johan Rudholmf855a372015-01-12 15:38:05 +01002172
Adrian Hunter437db4c2016-05-04 10:38:21 +03002173 /*
2174 * In the case of recovery, we can't expect flushing the cache to work
2175 * always, but we have a go and ignore errors.
2176 */
2177 mmc_flush_cache(host->card);
2178
Gwendal Grignou4e6c7172016-04-01 16:04:22 -07002179 if ((host->caps & MMC_CAP_HW_RESET) && host->ops->hw_reset &&
2180 mmc_can_reset(card)) {
2181 /* If the card accept RST_n signal, send it. */
2182 mmc_set_clock(host, host->f_init);
2183 host->ops->hw_reset(host);
2184 /* Set initial state and call mmc_set_ios */
2185 mmc_set_initial_state(host);
2186 } else {
2187 /* Do a brute force power cycle */
2188 mmc_power_cycle(host, card->ocr);
Ulf Hansson52c82122017-05-08 23:52:04 +02002189 mmc_pwrseq_reset(host);
Gwendal Grignou4e6c7172016-04-01 16:04:22 -07002190 }
Ulf Hansson364549d2015-06-01 11:14:57 +02002191 return mmc_init_card(host, card->ocr, card);
Johan Rudholmf855a372015-01-12 15:38:05 +01002192}
2193
Adrian Hunter9feae242009-09-22 16:44:32 -07002194static const struct mmc_bus_ops mmc_ops = {
2195 .remove = mmc_remove,
2196 .detect = mmc_detect,
Adrian Hunter9feae242009-09-22 16:44:32 -07002197 .suspend = mmc_suspend,
2198 .resume = mmc_resume,
Ulf Hanssonc4d770d2013-05-02 14:02:39 +02002199 .runtime_suspend = mmc_runtime_suspend,
2200 .runtime_resume = mmc_runtime_resume,
Adrian Hunterd3049502011-11-28 16:22:00 +02002201 .alive = mmc_alive,
Ulf Hansson486fdbb2013-06-10 17:03:44 +02002202 .shutdown = mmc_shutdown,
Ulf Hansson3a3db602018-04-05 13:24:43 +02002203 .hw_reset = _mmc_hw_reset,
Adrian Hunter9feae242009-09-22 16:44:32 -07002204};
2205
Pierre Ossman6abaa0c2007-05-01 16:00:02 +02002206/*
2207 * Starting point for MMC card init.
2208 */
Andy Ross807e8e42011-01-03 10:36:56 -08002209int mmc_attach_mmc(struct mmc_host *host)
Pierre Ossman6abaa0c2007-05-01 16:00:02 +02002210{
2211 int err;
Ulf Hansson69041152013-09-13 11:31:33 +02002212 u32 ocr, rocr;
Pierre Ossman6abaa0c2007-05-01 16:00:02 +02002213
Pierre Ossmand84075c82007-08-09 13:23:56 +02002214 WARN_ON(!host->claimed);
Pierre Ossman6abaa0c2007-05-01 16:00:02 +02002215
Stefan Nilsson XK44669032011-09-15 17:50:38 +02002216 /* Set correct bus mode for MMC before attempting attach */
2217 if (!mmc_host_is_spi(host))
2218 mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN);
2219
Andy Ross807e8e42011-01-03 10:36:56 -08002220 err = mmc_send_op_cond(host, 0, &ocr);
2221 if (err)
2222 return err;
2223
Ulf Hansson2501c912013-10-30 01:00:18 +01002224 mmc_attach_bus(host, &mmc_ops);
Takashi Iwai8f230f452010-12-08 10:04:30 +01002225 if (host->ocr_avail_mmc)
2226 host->ocr_avail = host->ocr_avail_mmc;
Pierre Ossman6abaa0c2007-05-01 16:00:02 +02002227
2228 /*
David Brownellaf517152007-08-08 09:11:32 -07002229 * We need to get OCR a different way for SPI.
2230 */
2231 if (mmc_host_is_spi(host)) {
2232 err = mmc_spi_read_ocr(host, 1, &ocr);
2233 if (err)
2234 goto err;
2235 }
2236
Ulf Hansson69041152013-09-13 11:31:33 +02002237 rocr = mmc_select_voltage(host, ocr);
Pierre Ossman6abaa0c2007-05-01 16:00:02 +02002238
2239 /*
2240 * Can we support the voltage of the card?
2241 */
Ulf Hansson69041152013-09-13 11:31:33 +02002242 if (!rocr) {
Pierre Ossman109b5be2007-07-23 00:12:10 +02002243 err = -EINVAL;
Pierre Ossman6abaa0c2007-05-01 16:00:02 +02002244 goto err;
Pierre Ossman109b5be2007-07-23 00:12:10 +02002245 }
Pierre Ossman6abaa0c2007-05-01 16:00:02 +02002246
2247 /*
2248 * Detect and init the card.
2249 */
Ulf Hansson69041152013-09-13 11:31:33 +02002250 err = mmc_init_card(host, rocr, NULL);
Pierre Ossman17b04292007-07-22 22:18:46 +02002251 if (err)
Pierre Ossman6abaa0c2007-05-01 16:00:02 +02002252 goto err;
2253
2254 mmc_release_host(host);
Pierre Ossman4101c162007-05-19 13:39:01 +02002255 err = mmc_add_card(host->card);
Pierre Ossman7ea239d2006-12-31 00:11:32 +01002256 if (err)
Pierre Ossman2986d0b2007-07-22 17:52:06 +02002257 goto remove_card;
Pierre Ossman7ea239d2006-12-31 00:11:32 +01002258
Sergei Shtylyov2860d062015-10-14 23:53:03 +03002259 mmc_claim_host(host);
Pierre Ossman7ea239d2006-12-31 00:11:32 +01002260 return 0;
2261
Pierre Ossman2986d0b2007-07-22 17:52:06 +02002262remove_card:
Pierre Ossman6abaa0c2007-05-01 16:00:02 +02002263 mmc_remove_card(host->card);
Pierre Ossman2986d0b2007-07-22 17:52:06 +02002264 mmc_claim_host(host);
Andy Ross807e8e42011-01-03 10:36:56 -08002265 host->card = NULL;
Pierre Ossman7ea239d2006-12-31 00:11:32 +01002266err:
2267 mmc_detach_bus(host);
Pierre Ossman7ea239d2006-12-31 00:11:32 +01002268
Girish K Sa3c76eb2011-10-11 11:44:09 +05302269 pr_err("%s: error %d whilst initialising MMC card\n",
Pierre Ossman109b5be2007-07-23 00:12:10 +02002270 mmc_hostname(host), err);
2271
Pierre Ossmanadf66a02007-07-22 23:08:30 +02002272 return err;
Pierre Ossman7ea239d2006-12-31 00:11:32 +01002273}