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Commit | Line | Data |
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7ea239d9 | 1 | /* |
70f10482 | 2 | * linux/drivers/mmc/core/mmc.c |
7ea239d9 PO |
3 | * |
4 | * Copyright (C) 2003-2004 Russell King, All Rights Reserved. | |
5 | * Copyright (C) 2005-2007 Pierre Ossman, All Rights Reserved. | |
6 | * MMCv4 support Copyright (C) 2006 Philip Langdale, All Rights Reserved. | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License version 2 as | |
10 | * published by the Free Software Foundation. | |
11 | */ | |
12 | ||
13 | #include <linux/err.h> | |
81f8a7be | 14 | #include <linux/of.h> |
5a0e3ad6 | 15 | #include <linux/slab.h> |
0205a904 | 16 | #include <linux/stat.h> |
0cb403a2 | 17 | #include <linux/pm_runtime.h> |
7ea239d9 PO |
18 | |
19 | #include <linux/mmc/host.h> | |
20 | #include <linux/mmc/card.h> | |
21 | #include <linux/mmc/mmc.h> | |
22 | ||
23 | #include "core.h" | |
436f8daa | 24 | #include "host.h" |
4101c16a | 25 | #include "bus.h" |
7ea239d9 | 26 | #include "mmc_ops.h" |
4c4cb171 | 27 | #include "sd_ops.h" |
7ea239d9 PO |
28 | |
29 | static const unsigned int tran_exp[] = { | |
30 | 10000, 100000, 1000000, 10000000, | |
31 | 0, 0, 0, 0 | |
32 | }; | |
33 | ||
34 | static const unsigned char tran_mant[] = { | |
35 | 0, 10, 12, 13, 15, 20, 25, 30, | |
36 | 35, 40, 45, 50, 55, 60, 70, 80, | |
37 | }; | |
38 | ||
39 | static const unsigned int tacc_exp[] = { | |
40 | 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, | |
41 | }; | |
42 | ||
43 | static const unsigned int tacc_mant[] = { | |
44 | 0, 10, 12, 13, 15, 20, 25, 30, | |
45 | 35, 40, 45, 50, 55, 60, 70, 80, | |
46 | }; | |
47 | ||
48 | #define UNSTUFF_BITS(resp,start,size) \ | |
49 | ({ \ | |
50 | const int __size = size; \ | |
51 | const u32 __mask = (__size < 32 ? 1 << __size : 0) - 1; \ | |
52 | const int __off = 3 - ((start) / 32); \ | |
53 | const int __shft = (start) & 31; \ | |
54 | u32 __res; \ | |
55 | \ | |
56 | __res = resp[__off] >> __shft; \ | |
57 | if (__size + __shft > 32) \ | |
58 | __res |= resp[__off-1] << ((32 - __shft) % 32); \ | |
59 | __res & __mask; \ | |
60 | }) | |
61 | ||
62 | /* | |
63 | * Given the decoded CSD structure, decode the raw CID to our CID structure. | |
64 | */ | |
bd766312 | 65 | static int mmc_decode_cid(struct mmc_card *card) |
7ea239d9 PO |
66 | { |
67 | u32 *resp = card->raw_cid; | |
68 | ||
69 | /* | |
70 | * The selection of the format here is based upon published | |
71 | * specs from sandisk and from what people have reported. | |
72 | */ | |
73 | switch (card->csd.mmca_vsn) { | |
74 | case 0: /* MMC v1.0 - v1.2 */ | |
75 | case 1: /* MMC v1.4 */ | |
76 | card->cid.manfid = UNSTUFF_BITS(resp, 104, 24); | |
77 | card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); | |
78 | card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); | |
79 | card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); | |
80 | card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); | |
81 | card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); | |
82 | card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); | |
83 | card->cid.prod_name[6] = UNSTUFF_BITS(resp, 48, 8); | |
84 | card->cid.hwrev = UNSTUFF_BITS(resp, 44, 4); | |
85 | card->cid.fwrev = UNSTUFF_BITS(resp, 40, 4); | |
86 | card->cid.serial = UNSTUFF_BITS(resp, 16, 24); | |
87 | card->cid.month = UNSTUFF_BITS(resp, 12, 4); | |
88 | card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; | |
89 | break; | |
90 | ||
91 | case 2: /* MMC v2.0 - v2.2 */ | |
92 | case 3: /* MMC v3.1 - v3.3 */ | |
93 | case 4: /* MMC v4 */ | |
94 | card->cid.manfid = UNSTUFF_BITS(resp, 120, 8); | |
95 | card->cid.oemid = UNSTUFF_BITS(resp, 104, 16); | |
96 | card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); | |
97 | card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); | |
98 | card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); | |
99 | card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); | |
100 | card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); | |
101 | card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); | |
51e7e8b6 | 102 | card->cid.prv = UNSTUFF_BITS(resp, 48, 8); |
7ea239d9 PO |
103 | card->cid.serial = UNSTUFF_BITS(resp, 16, 32); |
104 | card->cid.month = UNSTUFF_BITS(resp, 12, 4); | |
105 | card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; | |
106 | break; | |
107 | ||
108 | default: | |
a3c76eb9 | 109 | pr_err("%s: card has unknown MMCA version %d\n", |
7ea239d9 | 110 | mmc_hostname(card->host), card->csd.mmca_vsn); |
bd766312 | 111 | return -EINVAL; |
7ea239d9 | 112 | } |
bd766312 PO |
113 | |
114 | return 0; | |
7ea239d9 PO |
115 | } |
116 | ||
dfe86cba AH |
117 | static void mmc_set_erase_size(struct mmc_card *card) |
118 | { | |
119 | if (card->ext_csd.erase_group_def & 1) | |
120 | card->erase_size = card->ext_csd.hc_erase_size; | |
121 | else | |
122 | card->erase_size = card->csd.erase_size; | |
123 | ||
124 | mmc_init_erase(card); | |
125 | } | |
126 | ||
7ea239d9 PO |
127 | /* |
128 | * Given a 128-bit response, decode to our card CSD structure. | |
129 | */ | |
bd766312 | 130 | static int mmc_decode_csd(struct mmc_card *card) |
7ea239d9 PO |
131 | { |
132 | struct mmc_csd *csd = &card->csd; | |
dfe86cba | 133 | unsigned int e, m, a, b; |
7ea239d9 PO |
134 | u32 *resp = card->raw_csd; |
135 | ||
136 | /* | |
137 | * We only understand CSD structure v1.1 and v1.2. | |
138 | * v1.2 has extra information in bits 15, 11 and 10. | |
6da24b78 | 139 | * We also support eMMC v4.4 & v4.41. |
7ea239d9 | 140 | */ |
6da24b78 KP |
141 | csd->structure = UNSTUFF_BITS(resp, 126, 2); |
142 | if (csd->structure == 0) { | |
a3c76eb9 | 143 | pr_err("%s: unrecognised CSD structure version %d\n", |
6da24b78 | 144 | mmc_hostname(card->host), csd->structure); |
bd766312 | 145 | return -EINVAL; |
7ea239d9 PO |
146 | } |
147 | ||
148 | csd->mmca_vsn = UNSTUFF_BITS(resp, 122, 4); | |
149 | m = UNSTUFF_BITS(resp, 115, 4); | |
150 | e = UNSTUFF_BITS(resp, 112, 3); | |
151 | csd->tacc_ns = (tacc_exp[e] * tacc_mant[m] + 9) / 10; | |
152 | csd->tacc_clks = UNSTUFF_BITS(resp, 104, 8) * 100; | |
153 | ||
154 | m = UNSTUFF_BITS(resp, 99, 4); | |
155 | e = UNSTUFF_BITS(resp, 96, 3); | |
156 | csd->max_dtr = tran_exp[e] * tran_mant[m]; | |
157 | csd->cmdclass = UNSTUFF_BITS(resp, 84, 12); | |
158 | ||
159 | e = UNSTUFF_BITS(resp, 47, 3); | |
160 | m = UNSTUFF_BITS(resp, 62, 12); | |
161 | csd->capacity = (1 + m) << (e + 2); | |
162 | ||
163 | csd->read_blkbits = UNSTUFF_BITS(resp, 80, 4); | |
164 | csd->read_partial = UNSTUFF_BITS(resp, 79, 1); | |
165 | csd->write_misalign = UNSTUFF_BITS(resp, 78, 1); | |
166 | csd->read_misalign = UNSTUFF_BITS(resp, 77, 1); | |
3d705d14 | 167 | csd->dsr_imp = UNSTUFF_BITS(resp, 76, 1); |
7ea239d9 PO |
168 | csd->r2w_factor = UNSTUFF_BITS(resp, 26, 3); |
169 | csd->write_blkbits = UNSTUFF_BITS(resp, 22, 4); | |
170 | csd->write_partial = UNSTUFF_BITS(resp, 21, 1); | |
bd766312 | 171 | |
dfe86cba AH |
172 | if (csd->write_blkbits >= 9) { |
173 | a = UNSTUFF_BITS(resp, 42, 5); | |
174 | b = UNSTUFF_BITS(resp, 37, 5); | |
175 | csd->erase_size = (a + 1) * (b + 1); | |
176 | csd->erase_size <<= csd->write_blkbits - 9; | |
177 | } | |
178 | ||
bd766312 | 179 | return 0; |
7ea239d9 PO |
180 | } |
181 | ||
96cf5f02 SJ |
182 | static void mmc_select_card_type(struct mmc_card *card) |
183 | { | |
184 | struct mmc_host *host = card->host; | |
0a5b6438 | 185 | u8 card_type = card->ext_csd.raw_card_type; |
5f1a4dd0 | 186 | u32 caps = host->caps, caps2 = host->caps2; |
577fb131 | 187 | unsigned int hs_max_dtr = 0, hs200_max_dtr = 0; |
2415c0ef | 188 | unsigned int avail_type = 0; |
96cf5f02 | 189 | |
2415c0ef SJ |
190 | if (caps & MMC_CAP_MMC_HIGHSPEED && |
191 | card_type & EXT_CSD_CARD_TYPE_HS_26) { | |
96cf5f02 | 192 | hs_max_dtr = MMC_HIGH_26_MAX_DTR; |
2415c0ef SJ |
193 | avail_type |= EXT_CSD_CARD_TYPE_HS_26; |
194 | } | |
96cf5f02 SJ |
195 | |
196 | if (caps & MMC_CAP_MMC_HIGHSPEED && | |
2415c0ef | 197 | card_type & EXT_CSD_CARD_TYPE_HS_52) { |
96cf5f02 | 198 | hs_max_dtr = MMC_HIGH_52_MAX_DTR; |
2415c0ef SJ |
199 | avail_type |= EXT_CSD_CARD_TYPE_HS_52; |
200 | } | |
96cf5f02 | 201 | |
2415c0ef SJ |
202 | if (caps & MMC_CAP_1_8V_DDR && |
203 | card_type & EXT_CSD_CARD_TYPE_DDR_1_8V) { | |
96cf5f02 | 204 | hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; |
2415c0ef SJ |
205 | avail_type |= EXT_CSD_CARD_TYPE_DDR_1_8V; |
206 | } | |
207 | ||
208 | if (caps & MMC_CAP_1_2V_DDR && | |
209 | card_type & EXT_CSD_CARD_TYPE_DDR_1_2V) { | |
210 | hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; | |
211 | avail_type |= EXT_CSD_CARD_TYPE_DDR_1_2V; | |
212 | } | |
96cf5f02 | 213 | |
2415c0ef SJ |
214 | if (caps2 & MMC_CAP2_HS200_1_8V_SDR && |
215 | card_type & EXT_CSD_CARD_TYPE_HS200_1_8V) { | |
577fb131 | 216 | hs200_max_dtr = MMC_HS200_MAX_DTR; |
2415c0ef SJ |
217 | avail_type |= EXT_CSD_CARD_TYPE_HS200_1_8V; |
218 | } | |
219 | ||
220 | if (caps2 & MMC_CAP2_HS200_1_2V_SDR && | |
221 | card_type & EXT_CSD_CARD_TYPE_HS200_1_2V) { | |
577fb131 | 222 | hs200_max_dtr = MMC_HS200_MAX_DTR; |
2415c0ef SJ |
223 | avail_type |= EXT_CSD_CARD_TYPE_HS200_1_2V; |
224 | } | |
96cf5f02 | 225 | |
0a5b6438 SJ |
226 | if (caps2 & MMC_CAP2_HS400_1_8V && |
227 | card_type & EXT_CSD_CARD_TYPE_HS400_1_8V) { | |
228 | hs200_max_dtr = MMC_HS200_MAX_DTR; | |
229 | avail_type |= EXT_CSD_CARD_TYPE_HS400_1_8V; | |
230 | } | |
231 | ||
232 | if (caps2 & MMC_CAP2_HS400_1_2V && | |
233 | card_type & EXT_CSD_CARD_TYPE_HS400_1_2V) { | |
234 | hs200_max_dtr = MMC_HS200_MAX_DTR; | |
235 | avail_type |= EXT_CSD_CARD_TYPE_HS400_1_2V; | |
236 | } | |
237 | ||
81ac2af6 SL |
238 | if ((caps2 & MMC_CAP2_HS400_ES) && |
239 | card->ext_csd.strobe_support && | |
240 | (avail_type & EXT_CSD_CARD_TYPE_HS400)) | |
241 | avail_type |= EXT_CSD_CARD_TYPE_HS400ES; | |
242 | ||
96cf5f02 | 243 | card->ext_csd.hs_max_dtr = hs_max_dtr; |
577fb131 | 244 | card->ext_csd.hs200_max_dtr = hs200_max_dtr; |
2415c0ef | 245 | card->mmc_avail_type = avail_type; |
96cf5f02 SJ |
246 | } |
247 | ||
b4493eea GS |
248 | static void mmc_manage_enhanced_area(struct mmc_card *card, u8 *ext_csd) |
249 | { | |
994324bb GS |
250 | u8 hc_erase_grp_sz, hc_wp_grp_sz; |
251 | ||
252 | /* | |
253 | * Disable these attributes by default | |
254 | */ | |
255 | card->ext_csd.enhanced_area_offset = -EINVAL; | |
256 | card->ext_csd.enhanced_area_size = -EINVAL; | |
b4493eea GS |
257 | |
258 | /* | |
259 | * Enhanced area feature support -- check whether the eMMC | |
260 | * card has the Enhanced area enabled. If so, export enhanced | |
261 | * area offset and size to user by adding sysfs interface. | |
262 | */ | |
263 | if ((ext_csd[EXT_CSD_PARTITION_SUPPORT] & 0x2) && | |
264 | (ext_csd[EXT_CSD_PARTITION_ATTRIBUTE] & 0x1)) { | |
994324bb GS |
265 | if (card->ext_csd.partition_setting_completed) { |
266 | hc_erase_grp_sz = | |
267 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; | |
268 | hc_wp_grp_sz = | |
269 | ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; | |
b4493eea | 270 | |
994324bb GS |
271 | /* |
272 | * calculate the enhanced data area offset, in bytes | |
273 | */ | |
274 | card->ext_csd.enhanced_area_offset = | |
ded8a5f9 KM |
275 | (((unsigned long long)ext_csd[139]) << 24) + |
276 | (((unsigned long long)ext_csd[138]) << 16) + | |
277 | (((unsigned long long)ext_csd[137]) << 8) + | |
278 | (((unsigned long long)ext_csd[136])); | |
994324bb GS |
279 | if (mmc_card_blockaddr(card)) |
280 | card->ext_csd.enhanced_area_offset <<= 9; | |
281 | /* | |
282 | * calculate the enhanced data area size, in kilobytes | |
283 | */ | |
284 | card->ext_csd.enhanced_area_size = | |
285 | (ext_csd[142] << 16) + (ext_csd[141] << 8) + | |
286 | ext_csd[140]; | |
287 | card->ext_csd.enhanced_area_size *= | |
288 | (size_t)(hc_erase_grp_sz * hc_wp_grp_sz); | |
289 | card->ext_csd.enhanced_area_size <<= 9; | |
290 | } else { | |
291 | pr_warn("%s: defines enhanced area without partition setting complete\n", | |
292 | mmc_hostname(card->host)); | |
293 | } | |
b4493eea GS |
294 | } |
295 | } | |
296 | ||
297 | static void mmc_manage_gp_partitions(struct mmc_card *card, u8 *ext_csd) | |
298 | { | |
b4493eea | 299 | int idx; |
994324bb GS |
300 | u8 hc_erase_grp_sz, hc_wp_grp_sz; |
301 | unsigned int part_size; | |
b4493eea GS |
302 | |
303 | /* | |
304 | * General purpose partition feature support -- | |
305 | * If ext_csd has the size of general purpose partitions, | |
306 | * set size, part_cfg, partition name in mmc_part. | |
307 | */ | |
308 | if (ext_csd[EXT_CSD_PARTITION_SUPPORT] & | |
309 | EXT_CSD_PART_SUPPORT_PART_EN) { | |
994324bb GS |
310 | hc_erase_grp_sz = |
311 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; | |
312 | hc_wp_grp_sz = | |
313 | ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; | |
b4493eea GS |
314 | |
315 | for (idx = 0; idx < MMC_NUM_GP_PARTITION; idx++) { | |
316 | if (!ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3] && | |
317 | !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] && | |
318 | !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2]) | |
319 | continue; | |
994324bb GS |
320 | if (card->ext_csd.partition_setting_completed == 0) { |
321 | pr_warn("%s: has partition size defined without partition complete\n", | |
322 | mmc_hostname(card->host)); | |
323 | break; | |
324 | } | |
b4493eea GS |
325 | part_size = |
326 | (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2] | |
327 | << 16) + | |
328 | (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] | |
329 | << 8) + | |
330 | ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3]; | |
331 | part_size *= (size_t)(hc_erase_grp_sz * | |
332 | hc_wp_grp_sz); | |
333 | mmc_part_add(card, part_size << 19, | |
334 | EXT_CSD_PART_CONFIG_ACC_GP0 + idx, | |
335 | "gp%d", idx, false, | |
336 | MMC_BLK_DATA_AREA_GP); | |
337 | } | |
338 | } | |
339 | } | |
340 | ||
1c447116 AH |
341 | /* Minimum partition switch timeout in milliseconds */ |
342 | #define MMC_MIN_PART_SWITCH_TIME 300 | |
343 | ||
08ee80cc PR |
344 | /* |
345 | * Decode extended CSD. | |
346 | */ | |
076ec38a | 347 | static int mmc_decode_ext_csd(struct mmc_card *card, u8 *ext_csd) |
08ee80cc | 348 | { |
e0c368d5 NJ |
349 | int err = 0, idx; |
350 | unsigned int part_size; | |
81f8a7be HG |
351 | struct device_node *np; |
352 | bool broken_hpi = false; | |
08ee80cc | 353 | |
6da24b78 | 354 | /* Version is coded in the CSD_STRUCTURE byte in the EXT_CSD register */ |
f39b2dd9 | 355 | card->ext_csd.raw_ext_csd_structure = ext_csd[EXT_CSD_STRUCTURE]; |
6da24b78 | 356 | if (card->csd.structure == 3) { |
f39b2dd9 | 357 | if (card->ext_csd.raw_ext_csd_structure > 2) { |
a3c76eb9 | 358 | pr_err("%s: unrecognised EXT_CSD structure " |
6da24b78 | 359 | "version %d\n", mmc_hostname(card->host), |
f39b2dd9 | 360 | card->ext_csd.raw_ext_csd_structure); |
6da24b78 KP |
361 | err = -EINVAL; |
362 | goto out; | |
363 | } | |
364 | } | |
365 | ||
81f8a7be HG |
366 | np = mmc_of_find_child_device(card->host, 0); |
367 | if (np && of_device_is_compatible(np, "mmc-card")) | |
368 | broken_hpi = of_property_read_bool(np, "broken-hpi"); | |
369 | of_node_put(np); | |
370 | ||
03a59437 RI |
371 | /* |
372 | * The EXT_CSD format is meant to be forward compatible. As long | |
373 | * as CSD_STRUCTURE does not change, all values for EXT_CSD_REV | |
374 | * are authorized, see JEDEC JESD84-B50 section B.8. | |
375 | */ | |
b1ebe384 | 376 | card->ext_csd.rev = ext_csd[EXT_CSD_REV]; |
d7604d76 | 377 | |
f39b2dd9 PR |
378 | card->ext_csd.raw_sectors[0] = ext_csd[EXT_CSD_SEC_CNT + 0]; |
379 | card->ext_csd.raw_sectors[1] = ext_csd[EXT_CSD_SEC_CNT + 1]; | |
380 | card->ext_csd.raw_sectors[2] = ext_csd[EXT_CSD_SEC_CNT + 2]; | |
381 | card->ext_csd.raw_sectors[3] = ext_csd[EXT_CSD_SEC_CNT + 3]; | |
b1ebe384 | 382 | if (card->ext_csd.rev >= 2) { |
d7604d76 PO |
383 | card->ext_csd.sectors = |
384 | ext_csd[EXT_CSD_SEC_CNT + 0] << 0 | | |
385 | ext_csd[EXT_CSD_SEC_CNT + 1] << 8 | | |
386 | ext_csd[EXT_CSD_SEC_CNT + 2] << 16 | | |
387 | ext_csd[EXT_CSD_SEC_CNT + 3] << 24; | |
fc8a0985 HP |
388 | |
389 | /* Cards with density > 2GiB are sector addressed */ | |
390 | if (card->ext_csd.sectors > (2u * 1024 * 1024 * 1024) / 512) | |
d7604d76 PO |
391 | mmc_card_set_blockaddr(card); |
392 | } | |
96cf5f02 | 393 | |
81ac2af6 | 394 | card->ext_csd.strobe_support = ext_csd[EXT_CSD_STROBE_SUPPORT]; |
f39b2dd9 | 395 | card->ext_csd.raw_card_type = ext_csd[EXT_CSD_CARD_TYPE]; |
96cf5f02 | 396 | mmc_select_card_type(card); |
7ea239d9 | 397 | |
f39b2dd9 PR |
398 | card->ext_csd.raw_s_a_timeout = ext_csd[EXT_CSD_S_A_TIMEOUT]; |
399 | card->ext_csd.raw_erase_timeout_mult = | |
400 | ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; | |
401 | card->ext_csd.raw_hc_erase_grp_size = | |
402 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; | |
b1ebe384 JL |
403 | if (card->ext_csd.rev >= 3) { |
404 | u8 sa_shift = ext_csd[EXT_CSD_S_A_TIMEOUT]; | |
371a689f AW |
405 | card->ext_csd.part_config = ext_csd[EXT_CSD_PART_CONFIG]; |
406 | ||
407 | /* EXT_CSD value is in units of 10ms, but we store in ms */ | |
408 | card->ext_csd.part_time = 10 * ext_csd[EXT_CSD_PART_SWITCH_TIME]; | |
1c447116 AH |
409 | /* Some eMMC set the value too low so set a minimum */ |
410 | if (card->ext_csd.part_time && | |
411 | card->ext_csd.part_time < MMC_MIN_PART_SWITCH_TIME) | |
412 | card->ext_csd.part_time = MMC_MIN_PART_SWITCH_TIME; | |
b1ebe384 JL |
413 | |
414 | /* Sleep / awake timeout in 100ns units */ | |
415 | if (sa_shift > 0 && sa_shift <= 0x17) | |
416 | card->ext_csd.sa_timeout = | |
417 | 1 << ext_csd[EXT_CSD_S_A_TIMEOUT]; | |
dfe86cba AH |
418 | card->ext_csd.erase_group_def = |
419 | ext_csd[EXT_CSD_ERASE_GROUP_DEF]; | |
420 | card->ext_csd.hc_erase_timeout = 300 * | |
421 | ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; | |
422 | card->ext_csd.hc_erase_size = | |
423 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] << 10; | |
f4c5522b AW |
424 | |
425 | card->ext_csd.rel_sectors = ext_csd[EXT_CSD_REL_WR_SEC_C]; | |
371a689f AW |
426 | |
427 | /* | |
428 | * There are two boot regions of equal size, defined in | |
429 | * multiples of 128K. | |
430 | */ | |
e0c368d5 NJ |
431 | if (ext_csd[EXT_CSD_BOOT_MULT] && mmc_boot_partition_access(card->host)) { |
432 | for (idx = 0; idx < MMC_NUM_BOOT_PARTITION; idx++) { | |
433 | part_size = ext_csd[EXT_CSD_BOOT_MULT] << 17; | |
434 | mmc_part_add(card, part_size, | |
435 | EXT_CSD_PART_CONFIG_ACC_BOOT0 + idx, | |
add710ea JR |
436 | "boot%d", idx, true, |
437 | MMC_BLK_DATA_AREA_BOOT); | |
e0c368d5 NJ |
438 | } |
439 | } | |
dfe86cba AH |
440 | } |
441 | ||
f39b2dd9 | 442 | card->ext_csd.raw_hc_erase_gap_size = |
dd13b4ed | 443 | ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; |
f39b2dd9 PR |
444 | card->ext_csd.raw_sec_trim_mult = |
445 | ext_csd[EXT_CSD_SEC_TRIM_MULT]; | |
446 | card->ext_csd.raw_sec_erase_mult = | |
447 | ext_csd[EXT_CSD_SEC_ERASE_MULT]; | |
448 | card->ext_csd.raw_sec_feature_support = | |
449 | ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; | |
450 | card->ext_csd.raw_trim_mult = | |
451 | ext_csd[EXT_CSD_TRIM_MULT]; | |
836dc2fe | 452 | card->ext_csd.raw_partition_support = ext_csd[EXT_CSD_PARTITION_SUPPORT]; |
b097e07f | 453 | card->ext_csd.raw_driver_strength = ext_csd[EXT_CSD_DRIVER_STRENGTH]; |
dfe86cba | 454 | if (card->ext_csd.rev >= 4) { |
69803d4f GS |
455 | if (ext_csd[EXT_CSD_PARTITION_SETTING_COMPLETED] & |
456 | EXT_CSD_PART_SETTING_COMPLETED) | |
457 | card->ext_csd.partition_setting_completed = 1; | |
458 | else | |
459 | card->ext_csd.partition_setting_completed = 0; | |
460 | ||
b4493eea | 461 | mmc_manage_enhanced_area(card, ext_csd); |
709de99d | 462 | |
b4493eea | 463 | mmc_manage_gp_partitions(card, ext_csd); |
e0c368d5 | 464 | |
dfe86cba AH |
465 | card->ext_csd.sec_trim_mult = |
466 | ext_csd[EXT_CSD_SEC_TRIM_MULT]; | |
467 | card->ext_csd.sec_erase_mult = | |
468 | ext_csd[EXT_CSD_SEC_ERASE_MULT]; | |
469 | card->ext_csd.sec_feature_support = | |
470 | ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; | |
471 | card->ext_csd.trim_timeout = 300 * | |
472 | ext_csd[EXT_CSD_TRIM_MULT]; | |
add710ea JR |
473 | |
474 | /* | |
475 | * Note that the call to mmc_part_add above defaults to read | |
476 | * only. If this default assumption is changed, the call must | |
477 | * take into account the value of boot_locked below. | |
478 | */ | |
479 | card->ext_csd.boot_ro_lock = ext_csd[EXT_CSD_BOOT_WP]; | |
480 | card->ext_csd.boot_ro_lockable = true; | |
60443712 FS |
481 | |
482 | /* Save power class values */ | |
483 | card->ext_csd.raw_pwr_cl_52_195 = | |
484 | ext_csd[EXT_CSD_PWR_CL_52_195]; | |
485 | card->ext_csd.raw_pwr_cl_26_195 = | |
486 | ext_csd[EXT_CSD_PWR_CL_26_195]; | |
487 | card->ext_csd.raw_pwr_cl_52_360 = | |
488 | ext_csd[EXT_CSD_PWR_CL_52_360]; | |
489 | card->ext_csd.raw_pwr_cl_26_360 = | |
490 | ext_csd[EXT_CSD_PWR_CL_26_360]; | |
491 | card->ext_csd.raw_pwr_cl_200_195 = | |
492 | ext_csd[EXT_CSD_PWR_CL_200_195]; | |
493 | card->ext_csd.raw_pwr_cl_200_360 = | |
494 | ext_csd[EXT_CSD_PWR_CL_200_360]; | |
495 | card->ext_csd.raw_pwr_cl_ddr_52_195 = | |
496 | ext_csd[EXT_CSD_PWR_CL_DDR_52_195]; | |
497 | card->ext_csd.raw_pwr_cl_ddr_52_360 = | |
498 | ext_csd[EXT_CSD_PWR_CL_DDR_52_360]; | |
0a5b6438 SJ |
499 | card->ext_csd.raw_pwr_cl_ddr_200_360 = |
500 | ext_csd[EXT_CSD_PWR_CL_DDR_200_360]; | |
b1ebe384 JL |
501 | } |
502 | ||
b2499518 | 503 | if (card->ext_csd.rev >= 5) { |
7c4f10ac RI |
504 | /* Adjust production date as per JEDEC JESD84-B451 */ |
505 | if (card->cid.year < 2010) | |
506 | card->cid.year += 16; | |
507 | ||
950d56ac JC |
508 | /* check whether the eMMC card supports BKOPS */ |
509 | if (ext_csd[EXT_CSD_BKOPS_SUPPORT] & 0x1) { | |
510 | card->ext_csd.bkops = 1; | |
0501be64 AS |
511 | card->ext_csd.man_bkops_en = |
512 | (ext_csd[EXT_CSD_BKOPS_EN] & | |
513 | EXT_CSD_MANUAL_BKOPS_MASK); | |
950d56ac JC |
514 | card->ext_csd.raw_bkops_status = |
515 | ext_csd[EXT_CSD_BKOPS_STATUS]; | |
0501be64 | 516 | if (!card->ext_csd.man_bkops_en) |
4ec96b4c | 517 | pr_debug("%s: MAN_BKOPS_EN bit is not set\n", |
950d56ac JC |
518 | mmc_hostname(card->host)); |
519 | } | |
520 | ||
eb0d8f13 | 521 | /* check whether the eMMC card supports HPI */ |
81f8a7be | 522 | if (!broken_hpi && (ext_csd[EXT_CSD_HPI_FEATURES] & 0x1)) { |
eb0d8f13 JC |
523 | card->ext_csd.hpi = 1; |
524 | if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x2) | |
525 | card->ext_csd.hpi_cmd = MMC_STOP_TRANSMISSION; | |
526 | else | |
527 | card->ext_csd.hpi_cmd = MMC_SEND_STATUS; | |
528 | /* | |
529 | * Indicate the maximum timeout to close | |
530 | * a command interrupted by HPI | |
531 | */ | |
532 | card->ext_csd.out_of_int_time = | |
533 | ext_csd[EXT_CSD_OUT_OF_INTERRUPT_TIME] * 10; | |
534 | } | |
535 | ||
f4c5522b | 536 | card->ext_csd.rel_param = ext_csd[EXT_CSD_WR_REL_PARAM]; |
b2499518 | 537 | card->ext_csd.rst_n_function = ext_csd[EXT_CSD_RST_N_FUNCTION]; |
090d25fe LP |
538 | |
539 | /* | |
540 | * RPMB regions are defined in multiples of 128K. | |
541 | */ | |
542 | card->ext_csd.raw_rpmb_size_mult = ext_csd[EXT_CSD_RPMB_MULT]; | |
d0123cca | 543 | if (ext_csd[EXT_CSD_RPMB_MULT] && mmc_host_cmd23(card->host)) { |
090d25fe LP |
544 | mmc_part_add(card, ext_csd[EXT_CSD_RPMB_MULT] << 17, |
545 | EXT_CSD_PART_CONFIG_ACC_RPMB, | |
546 | "rpmb", 0, false, | |
547 | MMC_BLK_DATA_AREA_RPMB); | |
548 | } | |
b2499518 | 549 | } |
f4c5522b | 550 | |
5238acbe | 551 | card->ext_csd.raw_erased_mem_count = ext_csd[EXT_CSD_ERASED_MEM_CONT]; |
dfe86cba AH |
552 | if (ext_csd[EXT_CSD_ERASED_MEM_CONT]) |
553 | card->erased_byte = 0xFF; | |
554 | else | |
555 | card->erased_byte = 0x0; | |
556 | ||
336c716a | 557 | /* eMMC v4.5 or later */ |
bec8726a | 558 | if (card->ext_csd.rev >= 6) { |
336c716a SJ |
559 | card->ext_csd.feature_support |= MMC_DISCARD_FEATURE; |
560 | ||
b23cf0bd SJ |
561 | card->ext_csd.generic_cmd6_time = 10 * |
562 | ext_csd[EXT_CSD_GENERIC_CMD6_TIME]; | |
bec8726a G |
563 | card->ext_csd.power_off_longtime = 10 * |
564 | ext_csd[EXT_CSD_POWER_OFF_LONG_TIME]; | |
b23cf0bd | 565 | |
336c716a SJ |
566 | card->ext_csd.cache_size = |
567 | ext_csd[EXT_CSD_CACHE_SIZE + 0] << 0 | | |
568 | ext_csd[EXT_CSD_CACHE_SIZE + 1] << 8 | | |
569 | ext_csd[EXT_CSD_CACHE_SIZE + 2] << 16 | | |
570 | ext_csd[EXT_CSD_CACHE_SIZE + 3] << 24; | |
4265900e SD |
571 | |
572 | if (ext_csd[EXT_CSD_DATA_SECTOR_SIZE] == 1) | |
573 | card->ext_csd.data_sector_size = 4096; | |
574 | else | |
575 | card->ext_csd.data_sector_size = 512; | |
576 | ||
577 | if ((ext_csd[EXT_CSD_DATA_TAG_SUPPORT] & 1) && | |
578 | (ext_csd[EXT_CSD_TAG_UNIT_SIZE] <= 8)) { | |
579 | card->ext_csd.data_tag_unit_size = | |
580 | ((unsigned int) 1 << ext_csd[EXT_CSD_TAG_UNIT_SIZE]) * | |
581 | (card->ext_csd.data_sector_size); | |
582 | } else { | |
583 | card->ext_csd.data_tag_unit_size = 0; | |
584 | } | |
abd9ac14 SJ |
585 | |
586 | card->ext_csd.max_packed_writes = | |
587 | ext_csd[EXT_CSD_MAX_PACKED_WRITES]; | |
588 | card->ext_csd.max_packed_reads = | |
589 | ext_csd[EXT_CSD_MAX_PACKED_READS]; | |
a5075eb9 SD |
590 | } else { |
591 | card->ext_csd.data_sector_size = 512; | |
336c716a | 592 | } |
881d1c25 | 593 | |
0f762426 GG |
594 | /* eMMC v5 or later */ |
595 | if (card->ext_csd.rev >= 7) { | |
596 | memcpy(card->ext_csd.fwrev, &ext_csd[EXT_CSD_FIRMWARE_VERSION], | |
597 | MMC_FIRMWARE_LEN); | |
598 | card->ext_csd.ffu_capable = | |
599 | (ext_csd[EXT_CSD_SUPPORTED_MODE] & 0x1) && | |
600 | !(ext_csd[EXT_CSD_FW_CONFIG] & 0x1); | |
601 | } | |
7ea239d9 | 602 | out: |
08ee80cc PR |
603 | return err; |
604 | } | |
605 | ||
076ec38a UH |
606 | static int mmc_read_ext_csd(struct mmc_card *card) |
607 | { | |
c197787c | 608 | u8 *ext_csd; |
076ec38a UH |
609 | int err; |
610 | ||
c197787c UH |
611 | if (!mmc_can_ext_csd(card)) |
612 | return 0; | |
613 | ||
076ec38a | 614 | err = mmc_get_ext_csd(card, &ext_csd); |
c197787c UH |
615 | if (err) { |
616 | /* If the host or the card can't do the switch, | |
617 | * fail more gracefully. */ | |
618 | if ((err != -EINVAL) | |
619 | && (err != -ENOSYS) | |
620 | && (err != -EFAULT)) | |
621 | return err; | |
622 | ||
623 | /* | |
624 | * High capacity cards should have this "magic" size | |
625 | * stored in their CSD. | |
626 | */ | |
627 | if (card->csd.capacity == (4096 * 512)) { | |
628 | pr_err("%s: unable to read EXT_CSD on a possible high capacity card. Card will be ignored.\n", | |
629 | mmc_hostname(card->host)); | |
630 | } else { | |
631 | pr_warn("%s: unable to read EXT_CSD, performance might suffer\n", | |
632 | mmc_hostname(card->host)); | |
633 | err = 0; | |
634 | } | |
635 | ||
076ec38a | 636 | return err; |
c197787c | 637 | } |
076ec38a UH |
638 | |
639 | err = mmc_decode_ext_csd(card, ext_csd); | |
640 | kfree(ext_csd); | |
641 | return err; | |
642 | } | |
643 | ||
f39b2dd9 | 644 | static int mmc_compare_ext_csds(struct mmc_card *card, unsigned bus_width) |
08ee80cc PR |
645 | { |
646 | u8 *bw_ext_csd; | |
647 | int err; | |
648 | ||
f39b2dd9 PR |
649 | if (bus_width == MMC_BUS_WIDTH_1) |
650 | return 0; | |
651 | ||
08ee80cc | 652 | err = mmc_get_ext_csd(card, &bw_ext_csd); |
c197787c UH |
653 | if (err) |
654 | return err; | |
08ee80cc | 655 | |
08ee80cc | 656 | /* only compare read only fields */ |
dd13b4ed | 657 | err = !((card->ext_csd.raw_partition_support == |
08ee80cc | 658 | bw_ext_csd[EXT_CSD_PARTITION_SUPPORT]) && |
f39b2dd9 | 659 | (card->ext_csd.raw_erased_mem_count == |
08ee80cc | 660 | bw_ext_csd[EXT_CSD_ERASED_MEM_CONT]) && |
f39b2dd9 | 661 | (card->ext_csd.rev == |
08ee80cc | 662 | bw_ext_csd[EXT_CSD_REV]) && |
f39b2dd9 | 663 | (card->ext_csd.raw_ext_csd_structure == |
08ee80cc | 664 | bw_ext_csd[EXT_CSD_STRUCTURE]) && |
f39b2dd9 | 665 | (card->ext_csd.raw_card_type == |
08ee80cc | 666 | bw_ext_csd[EXT_CSD_CARD_TYPE]) && |
f39b2dd9 | 667 | (card->ext_csd.raw_s_a_timeout == |
08ee80cc | 668 | bw_ext_csd[EXT_CSD_S_A_TIMEOUT]) && |
f39b2dd9 | 669 | (card->ext_csd.raw_hc_erase_gap_size == |
08ee80cc | 670 | bw_ext_csd[EXT_CSD_HC_WP_GRP_SIZE]) && |
f39b2dd9 | 671 | (card->ext_csd.raw_erase_timeout_mult == |
08ee80cc | 672 | bw_ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]) && |
f39b2dd9 | 673 | (card->ext_csd.raw_hc_erase_grp_size == |
08ee80cc | 674 | bw_ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]) && |
f39b2dd9 | 675 | (card->ext_csd.raw_sec_trim_mult == |
08ee80cc | 676 | bw_ext_csd[EXT_CSD_SEC_TRIM_MULT]) && |
f39b2dd9 | 677 | (card->ext_csd.raw_sec_erase_mult == |
08ee80cc | 678 | bw_ext_csd[EXT_CSD_SEC_ERASE_MULT]) && |
f39b2dd9 | 679 | (card->ext_csd.raw_sec_feature_support == |
08ee80cc | 680 | bw_ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]) && |
f39b2dd9 | 681 | (card->ext_csd.raw_trim_mult == |
08ee80cc | 682 | bw_ext_csd[EXT_CSD_TRIM_MULT]) && |
f39b2dd9 PR |
683 | (card->ext_csd.raw_sectors[0] == |
684 | bw_ext_csd[EXT_CSD_SEC_CNT + 0]) && | |
685 | (card->ext_csd.raw_sectors[1] == | |
686 | bw_ext_csd[EXT_CSD_SEC_CNT + 1]) && | |
687 | (card->ext_csd.raw_sectors[2] == | |
688 | bw_ext_csd[EXT_CSD_SEC_CNT + 2]) && | |
689 | (card->ext_csd.raw_sectors[3] == | |
60443712 FS |
690 | bw_ext_csd[EXT_CSD_SEC_CNT + 3]) && |
691 | (card->ext_csd.raw_pwr_cl_52_195 == | |
692 | bw_ext_csd[EXT_CSD_PWR_CL_52_195]) && | |
693 | (card->ext_csd.raw_pwr_cl_26_195 == | |
694 | bw_ext_csd[EXT_CSD_PWR_CL_26_195]) && | |
695 | (card->ext_csd.raw_pwr_cl_52_360 == | |
696 | bw_ext_csd[EXT_CSD_PWR_CL_52_360]) && | |
697 | (card->ext_csd.raw_pwr_cl_26_360 == | |
698 | bw_ext_csd[EXT_CSD_PWR_CL_26_360]) && | |
699 | (card->ext_csd.raw_pwr_cl_200_195 == | |
700 | bw_ext_csd[EXT_CSD_PWR_CL_200_195]) && | |
701 | (card->ext_csd.raw_pwr_cl_200_360 == | |
702 | bw_ext_csd[EXT_CSD_PWR_CL_200_360]) && | |
703 | (card->ext_csd.raw_pwr_cl_ddr_52_195 == | |
704 | bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_195]) && | |
705 | (card->ext_csd.raw_pwr_cl_ddr_52_360 == | |
0a5b6438 SJ |
706 | bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_360]) && |
707 | (card->ext_csd.raw_pwr_cl_ddr_200_360 == | |
708 | bw_ext_csd[EXT_CSD_PWR_CL_DDR_200_360])); | |
709 | ||
08ee80cc PR |
710 | if (err) |
711 | err = -EINVAL; | |
712 | ||
00b41b58 | 713 | kfree(bw_ext_csd); |
7ea239d9 PO |
714 | return err; |
715 | } | |
716 | ||
51ec92e2 PO |
717 | MMC_DEV_ATTR(cid, "%08x%08x%08x%08x\n", card->raw_cid[0], card->raw_cid[1], |
718 | card->raw_cid[2], card->raw_cid[3]); | |
719 | MMC_DEV_ATTR(csd, "%08x%08x%08x%08x\n", card->raw_csd[0], card->raw_csd[1], | |
720 | card->raw_csd[2], card->raw_csd[3]); | |
721 | MMC_DEV_ATTR(date, "%02d/%04d\n", card->cid.month, card->cid.year); | |
dfe86cba AH |
722 | MMC_DEV_ATTR(erase_size, "%u\n", card->erase_size << 9); |
723 | MMC_DEV_ATTR(preferred_erase_size, "%u\n", card->pref_erase << 9); | |
0f762426 | 724 | MMC_DEV_ATTR(ffu_capable, "%d\n", card->ext_csd.ffu_capable); |
51ec92e2 PO |
725 | MMC_DEV_ATTR(hwrev, "0x%x\n", card->cid.hwrev); |
726 | MMC_DEV_ATTR(manfid, "0x%06x\n", card->cid.manfid); | |
727 | MMC_DEV_ATTR(name, "%s\n", card->cid.prod_name); | |
728 | MMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid); | |
51e7e8b6 | 729 | MMC_DEV_ATTR(prv, "0x%x\n", card->cid.prv); |
51ec92e2 | 730 | MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial); |
709de99d CD |
731 | MMC_DEV_ATTR(enhanced_area_offset, "%llu\n", |
732 | card->ext_csd.enhanced_area_offset); | |
733 | MMC_DEV_ATTR(enhanced_area_size, "%u\n", card->ext_csd.enhanced_area_size); | |
188cc042 LP |
734 | MMC_DEV_ATTR(raw_rpmb_size_mult, "%#x\n", card->ext_csd.raw_rpmb_size_mult); |
735 | MMC_DEV_ATTR(rel_sectors, "%#x\n", card->ext_csd.rel_sectors); | |
51ec92e2 | 736 | |
0f762426 GG |
737 | static ssize_t mmc_fwrev_show(struct device *dev, |
738 | struct device_attribute *attr, | |
739 | char *buf) | |
740 | { | |
741 | struct mmc_card *card = mmc_dev_to_card(dev); | |
742 | ||
743 | if (card->ext_csd.rev < 7) { | |
744 | return sprintf(buf, "0x%x\n", card->cid.fwrev); | |
745 | } else { | |
746 | return sprintf(buf, "0x%*phN\n", MMC_FIRMWARE_LEN, | |
747 | card->ext_csd.fwrev); | |
748 | } | |
749 | } | |
750 | ||
751 | static DEVICE_ATTR(fwrev, S_IRUGO, mmc_fwrev_show, NULL); | |
752 | ||
51ec92e2 PO |
753 | static struct attribute *mmc_std_attrs[] = { |
754 | &dev_attr_cid.attr, | |
755 | &dev_attr_csd.attr, | |
756 | &dev_attr_date.attr, | |
dfe86cba AH |
757 | &dev_attr_erase_size.attr, |
758 | &dev_attr_preferred_erase_size.attr, | |
51ec92e2 | 759 | &dev_attr_fwrev.attr, |
0f762426 | 760 | &dev_attr_ffu_capable.attr, |
51ec92e2 PO |
761 | &dev_attr_hwrev.attr, |
762 | &dev_attr_manfid.attr, | |
763 | &dev_attr_name.attr, | |
764 | &dev_attr_oemid.attr, | |
51e7e8b6 | 765 | &dev_attr_prv.attr, |
51ec92e2 | 766 | &dev_attr_serial.attr, |
709de99d CD |
767 | &dev_attr_enhanced_area_offset.attr, |
768 | &dev_attr_enhanced_area_size.attr, | |
188cc042 LP |
769 | &dev_attr_raw_rpmb_size_mult.attr, |
770 | &dev_attr_rel_sectors.attr, | |
51ec92e2 PO |
771 | NULL, |
772 | }; | |
d1e58212 | 773 | ATTRIBUTE_GROUPS(mmc_std); |
51ec92e2 PO |
774 | |
775 | static struct device_type mmc_type = { | |
d1e58212 | 776 | .groups = mmc_std_groups, |
51ec92e2 PO |
777 | }; |
778 | ||
b87d8dbf G |
779 | /* |
780 | * Select the PowerClass for the current bus width | |
781 | * If power class is defined for 4/8 bit bus in the | |
782 | * extended CSD register, select it by executing the | |
783 | * mmc_switch command. | |
784 | */ | |
2385049d SJ |
785 | static int __mmc_select_powerclass(struct mmc_card *card, |
786 | unsigned int bus_width) | |
b87d8dbf | 787 | { |
2385049d SJ |
788 | struct mmc_host *host = card->host; |
789 | struct mmc_ext_csd *ext_csd = &card->ext_csd; | |
60443712 | 790 | unsigned int pwrclass_val = 0; |
2385049d | 791 | int err = 0; |
b87d8dbf | 792 | |
b87d8dbf G |
793 | switch (1 << host->ios.vdd) { |
794 | case MMC_VDD_165_195: | |
2385049d SJ |
795 | if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) |
796 | pwrclass_val = ext_csd->raw_pwr_cl_26_195; | |
797 | else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR) | |
60443712 | 798 | pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? |
2385049d SJ |
799 | ext_csd->raw_pwr_cl_52_195 : |
800 | ext_csd->raw_pwr_cl_ddr_52_195; | |
801 | else if (host->ios.clock <= MMC_HS200_MAX_DTR) | |
802 | pwrclass_val = ext_csd->raw_pwr_cl_200_195; | |
b87d8dbf | 803 | break; |
93fc5a47 SJ |
804 | case MMC_VDD_27_28: |
805 | case MMC_VDD_28_29: | |
806 | case MMC_VDD_29_30: | |
807 | case MMC_VDD_30_31: | |
808 | case MMC_VDD_31_32: | |
b87d8dbf G |
809 | case MMC_VDD_32_33: |
810 | case MMC_VDD_33_34: | |
811 | case MMC_VDD_34_35: | |
812 | case MMC_VDD_35_36: | |
2385049d SJ |
813 | if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) |
814 | pwrclass_val = ext_csd->raw_pwr_cl_26_360; | |
815 | else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR) | |
60443712 | 816 | pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? |
2385049d SJ |
817 | ext_csd->raw_pwr_cl_52_360 : |
818 | ext_csd->raw_pwr_cl_ddr_52_360; | |
819 | else if (host->ios.clock <= MMC_HS200_MAX_DTR) | |
0a5b6438 SJ |
820 | pwrclass_val = (bus_width == EXT_CSD_DDR_BUS_WIDTH_8) ? |
821 | ext_csd->raw_pwr_cl_ddr_200_360 : | |
822 | ext_csd->raw_pwr_cl_200_360; | |
b87d8dbf G |
823 | break; |
824 | default: | |
6606110d JP |
825 | pr_warn("%s: Voltage range not supported for power class\n", |
826 | mmc_hostname(host)); | |
b87d8dbf G |
827 | return -EINVAL; |
828 | } | |
829 | ||
b87d8dbf G |
830 | if (bus_width & (EXT_CSD_BUS_WIDTH_8 | EXT_CSD_DDR_BUS_WIDTH_8)) |
831 | pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_8BIT_MASK) >> | |
832 | EXT_CSD_PWR_CL_8BIT_SHIFT; | |
833 | else | |
834 | pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_4BIT_MASK) >> | |
835 | EXT_CSD_PWR_CL_4BIT_SHIFT; | |
836 | ||
837 | /* If the power class is different from the default value */ | |
838 | if (pwrclass_val > 0) { | |
839 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
840 | EXT_CSD_POWER_CLASS, | |
841 | pwrclass_val, | |
71fe3eb0 | 842 | card->ext_csd.generic_cmd6_time); |
b87d8dbf G |
843 | } |
844 | ||
845 | return err; | |
846 | } | |
847 | ||
2385049d SJ |
848 | static int mmc_select_powerclass(struct mmc_card *card) |
849 | { | |
850 | struct mmc_host *host = card->host; | |
851 | u32 bus_width, ext_csd_bits; | |
852 | int err, ddr; | |
853 | ||
854 | /* Power class selection is supported for versions >= 4.0 */ | |
148bcab2 | 855 | if (!mmc_can_ext_csd(card)) |
2385049d SJ |
856 | return 0; |
857 | ||
858 | bus_width = host->ios.bus_width; | |
859 | /* Power class values are defined only for 4/8 bit bus */ | |
860 | if (bus_width == MMC_BUS_WIDTH_1) | |
861 | return 0; | |
862 | ||
863 | ddr = card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52; | |
864 | if (ddr) | |
865 | ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? | |
866 | EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; | |
867 | else | |
868 | ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? | |
869 | EXT_CSD_BUS_WIDTH_8 : EXT_CSD_BUS_WIDTH_4; | |
870 | ||
871 | err = __mmc_select_powerclass(card, ext_csd_bits); | |
872 | if (err) | |
873 | pr_warn("%s: power class selection to bus width %d ddr %d failed\n", | |
874 | mmc_hostname(host), 1 << bus_width, ddr); | |
875 | ||
876 | return err; | |
877 | } | |
878 | ||
a4924c71 | 879 | /* |
577fb131 | 880 | * Set the bus speed for the selected speed mode. |
a4924c71 | 881 | */ |
577fb131 SJ |
882 | static void mmc_set_bus_speed(struct mmc_card *card) |
883 | { | |
884 | unsigned int max_dtr = (unsigned int)-1; | |
885 | ||
0a5b6438 SJ |
886 | if ((mmc_card_hs200(card) || mmc_card_hs400(card)) && |
887 | max_dtr > card->ext_csd.hs200_max_dtr) | |
577fb131 SJ |
888 | max_dtr = card->ext_csd.hs200_max_dtr; |
889 | else if (mmc_card_hs(card) && max_dtr > card->ext_csd.hs_max_dtr) | |
890 | max_dtr = card->ext_csd.hs_max_dtr; | |
891 | else if (max_dtr > card->csd.max_dtr) | |
892 | max_dtr = card->csd.max_dtr; | |
893 | ||
894 | mmc_set_clock(card->host, max_dtr); | |
895 | } | |
896 | ||
897 | /* | |
898 | * Select the bus width amoung 4-bit and 8-bit(SDR). | |
899 | * If the bus width is changed successfully, return the selected width value. | |
900 | * Zero is returned instead of error value if the wide width is not supported. | |
901 | */ | |
902 | static int mmc_select_bus_width(struct mmc_card *card) | |
a4924c71 | 903 | { |
a4924c71 | 904 | static unsigned ext_csd_bits[] = { |
a4924c71 | 905 | EXT_CSD_BUS_WIDTH_8, |
577fb131 | 906 | EXT_CSD_BUS_WIDTH_4, |
a4924c71 G |
907 | }; |
908 | static unsigned bus_widths[] = { | |
a4924c71 | 909 | MMC_BUS_WIDTH_8, |
577fb131 | 910 | MMC_BUS_WIDTH_4, |
a4924c71 | 911 | }; |
577fb131 SJ |
912 | struct mmc_host *host = card->host; |
913 | unsigned idx, bus_width = 0; | |
914 | int err = 0; | |
a4924c71 | 915 | |
1c2d26e3 | 916 | if (!mmc_can_ext_csd(card) || |
577fb131 SJ |
917 | !(host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) |
918 | return 0; | |
a4924c71 | 919 | |
577fb131 | 920 | idx = (host->caps & MMC_CAP_8_BIT_DATA) ? 0 : 1; |
a4924c71 G |
921 | |
922 | /* | |
923 | * Unlike SD, MMC cards dont have a configuration register to notify | |
924 | * supported bus width. So bus test command should be run to identify | |
925 | * the supported bus width or compare the ext csd values of current | |
926 | * bus width and ext csd values of 1 bit mode read earlier. | |
927 | */ | |
577fb131 | 928 | for (; idx < ARRAY_SIZE(bus_widths); idx++) { |
a4924c71 G |
929 | /* |
930 | * Host is capable of 8bit transfer, then switch | |
931 | * the device to work in 8bit transfer mode. If the | |
932 | * mmc switch command returns error then switch to | |
933 | * 4bit transfer mode. On success set the corresponding | |
934 | * bus width on the host. | |
935 | */ | |
936 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
937 | EXT_CSD_BUS_WIDTH, | |
938 | ext_csd_bits[idx], | |
939 | card->ext_csd.generic_cmd6_time); | |
940 | if (err) | |
941 | continue; | |
942 | ||
577fb131 SJ |
943 | bus_width = bus_widths[idx]; |
944 | mmc_set_bus_width(host, bus_width); | |
a4924c71 | 945 | |
577fb131 SJ |
946 | /* |
947 | * If controller can't handle bus width test, | |
948 | * compare ext_csd previously read in 1 bit mode | |
949 | * against ext_csd at new bus width | |
950 | */ | |
a4924c71 | 951 | if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST)) |
577fb131 | 952 | err = mmc_compare_ext_csds(card, bus_width); |
a4924c71 | 953 | else |
577fb131 SJ |
954 | err = mmc_bus_test(card, bus_width); |
955 | ||
956 | if (!err) { | |
957 | err = bus_width; | |
a4924c71 | 958 | break; |
577fb131 SJ |
959 | } else { |
960 | pr_warn("%s: switch to bus width %d failed\n", | |
ed9feec7 | 961 | mmc_hostname(host), 1 << bus_width); |
577fb131 | 962 | } |
a4924c71 G |
963 | } |
964 | ||
577fb131 SJ |
965 | return err; |
966 | } | |
967 | ||
08573eaf CJ |
968 | /* Caller must hold re-tuning */ |
969 | static int mmc_switch_status(struct mmc_card *card) | |
970 | { | |
971 | u32 status; | |
972 | int err; | |
973 | ||
974 | err = mmc_send_status(card, &status); | |
975 | if (err) | |
976 | return err; | |
977 | ||
978 | return mmc_switch_status_error(card->host, status); | |
979 | } | |
980 | ||
577fb131 SJ |
981 | /* |
982 | * Switch to the high-speed mode | |
983 | */ | |
984 | static int mmc_select_hs(struct mmc_card *card) | |
985 | { | |
986 | int err; | |
987 | ||
988 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
989 | EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS, | |
990 | card->ext_csd.generic_cmd6_time, | |
08573eaf CJ |
991 | true, false, true); |
992 | if (!err) { | |
577fb131 | 993 | mmc_set_timing(card->host, MMC_TIMING_MMC_HS); |
08573eaf CJ |
994 | err = mmc_switch_status(card); |
995 | } | |
577fb131 SJ |
996 | |
997 | return err; | |
998 | } | |
999 | ||
1000 | /* | |
1001 | * Activate wide bus and DDR if supported. | |
1002 | */ | |
1003 | static int mmc_select_hs_ddr(struct mmc_card *card) | |
1004 | { | |
1005 | struct mmc_host *host = card->host; | |
1006 | u32 bus_width, ext_csd_bits; | |
1007 | int err = 0; | |
1008 | ||
1009 | if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52)) | |
1010 | return 0; | |
1011 | ||
1012 | bus_width = host->ios.bus_width; | |
1013 | if (bus_width == MMC_BUS_WIDTH_1) | |
1014 | return 0; | |
1015 | ||
1016 | ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? | |
1017 | EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; | |
1018 | ||
1019 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1020 | EXT_CSD_BUS_WIDTH, | |
1021 | ext_csd_bits, | |
1022 | card->ext_csd.generic_cmd6_time); | |
1023 | if (err) { | |
4b75bffc | 1024 | pr_err("%s: switch to bus width %d ddr failed\n", |
577fb131 SJ |
1025 | mmc_hostname(host), 1 << bus_width); |
1026 | return err; | |
1027 | } | |
1028 | ||
1029 | /* | |
1030 | * eMMC cards can support 3.3V to 1.2V i/o (vccq) | |
1031 | * signaling. | |
1032 | * | |
1033 | * EXT_CSD_CARD_TYPE_DDR_1_8V means 3.3V or 1.8V vccq. | |
1034 | * | |
1035 | * 1.8V vccq at 3.3V core voltage (vcc) is not required | |
1036 | * in the JEDEC spec for DDR. | |
1037 | * | |
312449ef CD |
1038 | * Even (e)MMC card can support 3.3v to 1.2v vccq, but not all |
1039 | * host controller can support this, like some of the SDHCI | |
1040 | * controller which connect to an eMMC device. Some of these | |
1041 | * host controller still needs to use 1.8v vccq for supporting | |
1042 | * DDR mode. | |
1043 | * | |
1044 | * So the sequence will be: | |
1045 | * if (host and device can both support 1.2v IO) | |
1046 | * use 1.2v IO; | |
1047 | * else if (host and device can both support 1.8v IO) | |
1048 | * use 1.8v IO; | |
1049 | * so if host and device can only support 3.3v IO, this is the | |
1050 | * last choice. | |
577fb131 SJ |
1051 | * |
1052 | * WARNING: eMMC rules are NOT the same as SD DDR | |
1053 | */ | |
312449ef CD |
1054 | err = -EINVAL; |
1055 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_2V) | |
1056 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); | |
577fb131 | 1057 | |
312449ef CD |
1058 | if (err && (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_8V)) |
1059 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); | |
1060 | ||
1061 | /* make sure vccq is 3.3v after switching disaster */ | |
1062 | if (err) | |
1063 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330); | |
1064 | ||
1065 | if (!err) | |
1066 | mmc_set_timing(host, MMC_TIMING_MMC_DDR52); | |
577fb131 SJ |
1067 | |
1068 | return err; | |
1069 | } | |
1070 | ||
0a5b6438 SJ |
1071 | static int mmc_select_hs400(struct mmc_card *card) |
1072 | { | |
1073 | struct mmc_host *host = card->host; | |
51b12f77 | 1074 | unsigned int max_dtr; |
0a5b6438 | 1075 | int err = 0; |
cc4f414c | 1076 | u8 val; |
0a5b6438 SJ |
1077 | |
1078 | /* | |
1079 | * HS400 mode requires 8-bit bus width | |
1080 | */ | |
1081 | if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 && | |
1082 | host->ios.bus_width == MMC_BUS_WIDTH_8)) | |
1083 | return 0; | |
1084 | ||
51b12f77 AH |
1085 | /* Reduce frequency to HS frequency */ |
1086 | max_dtr = card->ext_csd.hs_max_dtr; | |
1087 | mmc_set_clock(host, max_dtr); | |
0a5b6438 | 1088 | |
51b12f77 | 1089 | /* Switch card to HS mode */ |
adb24d42 | 1090 | val = EXT_CSD_TIMING_HS; |
0a5b6438 | 1091 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
cc4f414c | 1092 | EXT_CSD_HS_TIMING, val, |
0a5b6438 | 1093 | card->ext_csd.generic_cmd6_time, |
08573eaf | 1094 | true, false, true); |
0a5b6438 | 1095 | if (err) { |
4b75bffc | 1096 | pr_err("%s: switch to high-speed from hs200 failed, err:%d\n", |
0a5b6438 SJ |
1097 | mmc_hostname(host), err); |
1098 | return err; | |
1099 | } | |
1100 | ||
51b12f77 AH |
1101 | /* Set host controller to HS timing */ |
1102 | mmc_set_timing(card->host, MMC_TIMING_MMC_HS); | |
1103 | ||
08573eaf CJ |
1104 | err = mmc_switch_status(card); |
1105 | if (err) | |
1106 | goto out_err; | |
d2302933 AH |
1107 | |
1108 | /* Switch card to DDR */ | |
0a5b6438 SJ |
1109 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
1110 | EXT_CSD_BUS_WIDTH, | |
1111 | EXT_CSD_DDR_BUS_WIDTH_8, | |
1112 | card->ext_csd.generic_cmd6_time); | |
1113 | if (err) { | |
4b75bffc | 1114 | pr_err("%s: switch to bus width for hs400 failed, err:%d\n", |
0a5b6438 SJ |
1115 | mmc_hostname(host), err); |
1116 | return err; | |
1117 | } | |
1118 | ||
d2302933 | 1119 | /* Switch card to HS400 */ |
cc4f414c AH |
1120 | val = EXT_CSD_TIMING_HS400 | |
1121 | card->drive_strength << EXT_CSD_DRV_STR_SHIFT; | |
0a5b6438 | 1122 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
cc4f414c | 1123 | EXT_CSD_HS_TIMING, val, |
0a5b6438 | 1124 | card->ext_csd.generic_cmd6_time, |
08573eaf | 1125 | true, false, true); |
0a5b6438 | 1126 | if (err) { |
4b75bffc | 1127 | pr_err("%s: switch to hs400 failed, err:%d\n", |
0a5b6438 SJ |
1128 | mmc_hostname(host), err); |
1129 | return err; | |
1130 | } | |
1131 | ||
d2302933 | 1132 | /* Set host controller to HS400 timing and frequency */ |
0a5b6438 SJ |
1133 | mmc_set_timing(host, MMC_TIMING_MMC_HS400); |
1134 | mmc_set_bus_speed(card); | |
1135 | ||
08573eaf CJ |
1136 | err = mmc_switch_status(card); |
1137 | if (err) | |
1138 | goto out_err; | |
d2302933 | 1139 | |
0a5b6438 | 1140 | return 0; |
d2302933 AH |
1141 | |
1142 | out_err: | |
1143 | pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), | |
1144 | __func__, err); | |
1145 | return err; | |
0a5b6438 SJ |
1146 | } |
1147 | ||
6376f69d AH |
1148 | int mmc_hs200_to_hs400(struct mmc_card *card) |
1149 | { | |
1150 | return mmc_select_hs400(card); | |
1151 | } | |
1152 | ||
6376f69d AH |
1153 | int mmc_hs400_to_hs200(struct mmc_card *card) |
1154 | { | |
1155 | struct mmc_host *host = card->host; | |
6376f69d AH |
1156 | unsigned int max_dtr; |
1157 | int err; | |
cc4f414c | 1158 | u8 val; |
6376f69d | 1159 | |
6376f69d AH |
1160 | /* Reduce frequency to HS */ |
1161 | max_dtr = card->ext_csd.hs_max_dtr; | |
1162 | mmc_set_clock(host, max_dtr); | |
1163 | ||
1164 | /* Switch HS400 to HS DDR */ | |
adb24d42 | 1165 | val = EXT_CSD_TIMING_HS; |
6376f69d | 1166 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, |
cc4f414c | 1167 | val, card->ext_csd.generic_cmd6_time, |
08573eaf | 1168 | true, false, true); |
6376f69d AH |
1169 | if (err) |
1170 | goto out_err; | |
1171 | ||
1172 | mmc_set_timing(host, MMC_TIMING_MMC_DDR52); | |
1173 | ||
08573eaf CJ |
1174 | err = mmc_switch_status(card); |
1175 | if (err) | |
1176 | goto out_err; | |
6376f69d AH |
1177 | |
1178 | /* Switch HS DDR to HS */ | |
1179 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BUS_WIDTH, | |
1180 | EXT_CSD_BUS_WIDTH_8, card->ext_csd.generic_cmd6_time, | |
08573eaf | 1181 | true, false, true); |
6376f69d AH |
1182 | if (err) |
1183 | goto out_err; | |
1184 | ||
1185 | mmc_set_timing(host, MMC_TIMING_MMC_HS); | |
1186 | ||
08573eaf CJ |
1187 | err = mmc_switch_status(card); |
1188 | if (err) | |
1189 | goto out_err; | |
6376f69d AH |
1190 | |
1191 | /* Switch HS to HS200 */ | |
cc4f414c AH |
1192 | val = EXT_CSD_TIMING_HS200 | |
1193 | card->drive_strength << EXT_CSD_DRV_STR_SHIFT; | |
6376f69d | 1194 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, |
08573eaf CJ |
1195 | val, card->ext_csd.generic_cmd6_time, |
1196 | true, false, true); | |
6376f69d AH |
1197 | if (err) |
1198 | goto out_err; | |
1199 | ||
1200 | mmc_set_timing(host, MMC_TIMING_MMC_HS200); | |
1201 | ||
08573eaf CJ |
1202 | err = mmc_switch_status(card); |
1203 | if (err) | |
1204 | goto out_err; | |
6376f69d AH |
1205 | |
1206 | mmc_set_bus_speed(card); | |
1207 | ||
1208 | return 0; | |
1209 | ||
1210 | out_err: | |
1211 | pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), | |
1212 | __func__, err); | |
1213 | return err; | |
1214 | } | |
1215 | ||
81ac2af6 SL |
1216 | static int mmc_select_hs400es(struct mmc_card *card) |
1217 | { | |
1218 | struct mmc_host *host = card->host; | |
1219 | int err = 0; | |
1220 | u8 val; | |
1221 | ||
1222 | if (!(host->caps & MMC_CAP_8_BIT_DATA)) { | |
1223 | err = -ENOTSUPP; | |
1224 | goto out_err; | |
1225 | } | |
1226 | ||
1227 | err = mmc_select_bus_width(card); | |
1228 | if (err < 0) | |
1229 | goto out_err; | |
1230 | ||
1231 | /* Switch card to HS mode */ | |
1232 | err = mmc_select_hs(card); | |
1233 | if (err) { | |
1234 | pr_err("%s: switch to high-speed failed, err:%d\n", | |
1235 | mmc_hostname(host), err); | |
1236 | goto out_err; | |
1237 | } | |
1238 | ||
1239 | err = mmc_switch_status(card); | |
1240 | if (err) | |
1241 | goto out_err; | |
1242 | ||
1243 | /* Switch card to DDR with strobe bit */ | |
1244 | val = EXT_CSD_DDR_BUS_WIDTH_8 | EXT_CSD_BUS_WIDTH_STROBE; | |
1245 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1246 | EXT_CSD_BUS_WIDTH, | |
1247 | val, | |
1248 | card->ext_csd.generic_cmd6_time); | |
1249 | if (err) { | |
1250 | pr_err("%s: switch to bus width for hs400es failed, err:%d\n", | |
1251 | mmc_hostname(host), err); | |
1252 | goto out_err; | |
1253 | } | |
1254 | ||
1255 | /* Switch card to HS400 */ | |
1256 | val = EXT_CSD_TIMING_HS400 | | |
1257 | card->drive_strength << EXT_CSD_DRV_STR_SHIFT; | |
1258 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1259 | EXT_CSD_HS_TIMING, val, | |
1260 | card->ext_csd.generic_cmd6_time, | |
1261 | true, false, true); | |
1262 | if (err) { | |
1263 | pr_err("%s: switch to hs400es failed, err:%d\n", | |
1264 | mmc_hostname(host), err); | |
1265 | goto out_err; | |
1266 | } | |
1267 | ||
1268 | /* Set host controller to HS400 timing and frequency */ | |
1269 | mmc_set_timing(host, MMC_TIMING_MMC_HS400); | |
1270 | ||
1271 | /* Controller enable enhanced strobe function */ | |
1272 | host->ios.enhanced_strobe = true; | |
1273 | if (host->ops->hs400_enhanced_strobe) | |
1274 | host->ops->hs400_enhanced_strobe(host, &host->ios); | |
1275 | ||
1276 | err = mmc_switch_status(card); | |
1277 | if (err) | |
1278 | goto out_err; | |
1279 | ||
1280 | return 0; | |
1281 | ||
1282 | out_err: | |
1283 | pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), | |
1284 | __func__, err); | |
1285 | return err; | |
1286 | } | |
1287 | ||
cc4f414c AH |
1288 | static void mmc_select_driver_type(struct mmc_card *card) |
1289 | { | |
1290 | int card_drv_type, drive_strength, drv_type; | |
1291 | ||
1292 | card_drv_type = card->ext_csd.raw_driver_strength | | |
1293 | mmc_driver_type_mask(0); | |
1294 | ||
1295 | drive_strength = mmc_select_drive_strength(card, | |
1296 | card->ext_csd.hs200_max_dtr, | |
1297 | card_drv_type, &drv_type); | |
1298 | ||
1299 | card->drive_strength = drive_strength; | |
1300 | ||
1301 | if (drv_type) | |
1302 | mmc_set_driver_type(card->host, drv_type); | |
1303 | } | |
1304 | ||
577fb131 SJ |
1305 | /* |
1306 | * For device supporting HS200 mode, the following sequence | |
1307 | * should be done before executing the tuning process. | |
1308 | * 1. set the desired bus width(4-bit or 8-bit, 1-bit is not supported) | |
1309 | * 2. switch to HS200 mode | |
1310 | * 3. set the clock to > 52Mhz and <=200MHz | |
1311 | */ | |
1312 | static int mmc_select_hs200(struct mmc_card *card) | |
1313 | { | |
1314 | struct mmc_host *host = card->host; | |
e51534c8 | 1315 | unsigned int old_timing, old_signal_voltage; |
577fb131 | 1316 | int err = -EINVAL; |
cc4f414c | 1317 | u8 val; |
577fb131 | 1318 | |
e51534c8 | 1319 | old_signal_voltage = host->ios.signal_voltage; |
577fb131 SJ |
1320 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_2V) |
1321 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); | |
1322 | ||
1323 | if (err && card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_8V) | |
1324 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); | |
1325 | ||
1326 | /* If fails try again during next card power cycle */ | |
1327 | if (err) | |
e51534c8 | 1328 | return err; |
577fb131 | 1329 | |
cc4f414c AH |
1330 | mmc_select_driver_type(card); |
1331 | ||
577fb131 SJ |
1332 | /* |
1333 | * Set the bus width(4 or 8) with host's support and | |
1334 | * switch to HS200 mode if bus width is set successfully. | |
1335 | */ | |
1336 | err = mmc_select_bus_width(card); | |
f7414943 | 1337 | if (err >= 0) { |
cc4f414c AH |
1338 | val = EXT_CSD_TIMING_HS200 | |
1339 | card->drive_strength << EXT_CSD_DRV_STR_SHIFT; | |
4509f847 | 1340 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
cc4f414c | 1341 | EXT_CSD_HS_TIMING, val, |
577fb131 | 1342 | card->ext_csd.generic_cmd6_time, |
08573eaf | 1343 | true, false, true); |
1815e61b AH |
1344 | if (err) |
1345 | goto err; | |
1346 | old_timing = host->ios.timing; | |
1347 | mmc_set_timing(host, MMC_TIMING_MMC_HS200); | |
08573eaf CJ |
1348 | |
1349 | err = mmc_switch_status(card); | |
1350 | /* | |
1351 | * mmc_select_timing() assumes timing has not changed if | |
1352 | * it is a switch error. | |
1353 | */ | |
1354 | if (err == -EBADMSG) | |
1355 | mmc_set_timing(host, old_timing); | |
577fb131 | 1356 | } |
a4924c71 | 1357 | err: |
e51534c8 DA |
1358 | if (err) { |
1359 | /* fall back to the old signal voltage, if fails report error */ | |
1360 | if (__mmc_set_signal_voltage(host, old_signal_voltage)) | |
1361 | err = -EIO; | |
1362 | ||
1815e61b AH |
1363 | pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), |
1364 | __func__, err); | |
e51534c8 | 1365 | } |
a4924c71 G |
1366 | return err; |
1367 | } | |
1368 | ||
577fb131 | 1369 | /* |
81ac2af6 | 1370 | * Activate High Speed, HS200 or HS400ES mode if supported. |
577fb131 SJ |
1371 | */ |
1372 | static int mmc_select_timing(struct mmc_card *card) | |
1373 | { | |
1374 | int err = 0; | |
1375 | ||
148bcab2 | 1376 | if (!mmc_can_ext_csd(card)) |
577fb131 SJ |
1377 | goto bus_speed; |
1378 | ||
81ac2af6 SL |
1379 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400ES) |
1380 | err = mmc_select_hs400es(card); | |
1381 | else if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200) | |
577fb131 SJ |
1382 | err = mmc_select_hs200(card); |
1383 | else if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS) | |
1384 | err = mmc_select_hs(card); | |
1385 | ||
1386 | if (err && err != -EBADMSG) | |
1387 | return err; | |
1388 | ||
577fb131 SJ |
1389 | bus_speed: |
1390 | /* | |
1391 | * Set the bus speed to the selected bus timing. | |
1392 | * If timing is not selected, backward compatible is the default. | |
1393 | */ | |
1394 | mmc_set_bus_speed(card); | |
0400ed0a | 1395 | return 0; |
577fb131 SJ |
1396 | } |
1397 | ||
1398 | /* | |
1399 | * Execute tuning sequence to seek the proper bus operating | |
0a5b6438 | 1400 | * conditions for HS200 and HS400, which sends CMD21 to the device. |
577fb131 SJ |
1401 | */ |
1402 | static int mmc_hs200_tuning(struct mmc_card *card) | |
1403 | { | |
1404 | struct mmc_host *host = card->host; | |
577fb131 | 1405 | |
0a5b6438 SJ |
1406 | /* |
1407 | * Timing should be adjusted to the HS400 target | |
1408 | * operation frequency for tuning process | |
1409 | */ | |
1410 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 && | |
1411 | host->ios.bus_width == MMC_BUS_WIDTH_8) | |
1412 | if (host->ops->prepare_hs400_tuning) | |
1413 | host->ops->prepare_hs400_tuning(host, &host->ios); | |
1414 | ||
63e415c6 | 1415 | return mmc_execute_tuning(card); |
577fb131 SJ |
1416 | } |
1417 | ||
7ea239d9 | 1418 | /* |
6abaa0c9 PO |
1419 | * Handle the detection and initialisation of a card. |
1420 | * | |
8769392b | 1421 | * In the case of a resume, "oldcard" will contain the card |
6abaa0c9 | 1422 | * we're trying to reinitialise. |
7ea239d9 | 1423 | */ |
8c75deae | 1424 | static int mmc_init_card(struct mmc_host *host, u32 ocr, |
6abaa0c9 | 1425 | struct mmc_card *oldcard) |
7ea239d9 PO |
1426 | { |
1427 | struct mmc_card *card; | |
577fb131 | 1428 | int err; |
7ea239d9 | 1429 | u32 cid[4]; |
b676f039 | 1430 | u32 rocr; |
7ea239d9 PO |
1431 | |
1432 | BUG_ON(!host); | |
d84075c8 | 1433 | WARN_ON(!host->claimed); |
7ea239d9 | 1434 | |
44669034 SNX |
1435 | /* Set correct bus mode for MMC before attempting init */ |
1436 | if (!mmc_host_is_spi(host)) | |
1437 | mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); | |
1438 | ||
7ea239d9 PO |
1439 | /* |
1440 | * Since we're changing the OCR value, we seem to | |
1441 | * need to tell some cards to go back to the idle | |
1442 | * state. We wait 1ms to give cards time to | |
1443 | * respond. | |
c3805467 | 1444 | * mmc_go_idle is needed for eMMC that are asleep |
7ea239d9 PO |
1445 | */ |
1446 | mmc_go_idle(host); | |
1447 | ||
1448 | /* The extra bit indicates that we support high capacity */ | |
b676f039 | 1449 | err = mmc_send_op_cond(host, ocr | (1 << 30), &rocr); |
17b0429d | 1450 | if (err) |
6abaa0c9 | 1451 | goto err; |
7ea239d9 | 1452 | |
af517150 DB |
1453 | /* |
1454 | * For SPI, enable CRC as appropriate. | |
1455 | */ | |
1456 | if (mmc_host_is_spi(host)) { | |
1457 | err = mmc_spi_set_crc(host, use_spi_crc); | |
1458 | if (err) | |
1459 | goto err; | |
1460 | } | |
1461 | ||
7ea239d9 PO |
1462 | /* |
1463 | * Fetch CID from card. | |
1464 | */ | |
af517150 DB |
1465 | if (mmc_host_is_spi(host)) |
1466 | err = mmc_send_cid(host, cid); | |
1467 | else | |
1468 | err = mmc_all_send_cid(host, cid); | |
17b0429d | 1469 | if (err) |
7ea239d9 PO |
1470 | goto err; |
1471 | ||
6abaa0c9 | 1472 | if (oldcard) { |
adf66a0d PO |
1473 | if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) { |
1474 | err = -ENOENT; | |
6abaa0c9 | 1475 | goto err; |
adf66a0d | 1476 | } |
6abaa0c9 PO |
1477 | |
1478 | card = oldcard; | |
1479 | } else { | |
1480 | /* | |
1481 | * Allocate card structure. | |
1482 | */ | |
51ec92e2 | 1483 | card = mmc_alloc_card(host, &mmc_type); |
adf66a0d PO |
1484 | if (IS_ERR(card)) { |
1485 | err = PTR_ERR(card); | |
6abaa0c9 | 1486 | goto err; |
adf66a0d | 1487 | } |
7ea239d9 | 1488 | |
69041150 | 1489 | card->ocr = ocr; |
6abaa0c9 PO |
1490 | card->type = MMC_TYPE_MMC; |
1491 | card->rca = 1; | |
1492 | memcpy(card->raw_cid, cid, sizeof(card->raw_cid)); | |
1493 | } | |
7ea239d9 | 1494 | |
eac86321 DA |
1495 | /* |
1496 | * Call the optional HC's init_card function to handle quirks. | |
1497 | */ | |
1498 | if (host->ops->init_card) | |
1499 | host->ops->init_card(host, card); | |
1500 | ||
7ea239d9 | 1501 | /* |
af517150 | 1502 | * For native busses: set card RCA and quit open drain mode. |
7ea239d9 | 1503 | */ |
af517150 DB |
1504 | if (!mmc_host_is_spi(host)) { |
1505 | err = mmc_set_relative_addr(card); | |
1506 | if (err) | |
1507 | goto free_card; | |
7ea239d9 | 1508 | |
af517150 DB |
1509 | mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL); |
1510 | } | |
7ea239d9 | 1511 | |
6abaa0c9 PO |
1512 | if (!oldcard) { |
1513 | /* | |
1514 | * Fetch CSD from card. | |
1515 | */ | |
1516 | err = mmc_send_csd(card, card->raw_csd); | |
17b0429d | 1517 | if (err) |
6abaa0c9 | 1518 | goto free_card; |
7ea239d9 | 1519 | |
bd766312 | 1520 | err = mmc_decode_csd(card); |
adf66a0d | 1521 | if (err) |
bd766312 PO |
1522 | goto free_card; |
1523 | err = mmc_decode_cid(card); | |
adf66a0d | 1524 | if (err) |
bd766312 | 1525 | goto free_card; |
6abaa0c9 | 1526 | } |
7ea239d9 | 1527 | |
3d705d14 SH |
1528 | /* |
1529 | * handling only for cards supporting DSR and hosts requesting | |
1530 | * DSR configuration | |
1531 | */ | |
1532 | if (card->csd.dsr_imp && host->dsr_req) | |
1533 | mmc_set_dsr(host); | |
1534 | ||
7ea239d9 | 1535 | /* |
89a73cf5 | 1536 | * Select card, as all following commands rely on that. |
7ea239d9 | 1537 | */ |
af517150 DB |
1538 | if (!mmc_host_is_spi(host)) { |
1539 | err = mmc_select_card(card); | |
1540 | if (err) | |
1541 | goto free_card; | |
1542 | } | |
7ea239d9 | 1543 | |
6abaa0c9 | 1544 | if (!oldcard) { |
076ec38a UH |
1545 | /* Read extended CSD. */ |
1546 | err = mmc_read_ext_csd(card); | |
17b0429d | 1547 | if (err) |
6abaa0c9 | 1548 | goto free_card; |
b676f039 | 1549 | |
87e88659 MY |
1550 | /* |
1551 | * If doing byte addressing, check if required to do sector | |
b676f039 PR |
1552 | * addressing. Handle the case of <2GB cards needing sector |
1553 | * addressing. See section 8.1 JEDEC Standard JED84-A441; | |
1554 | * ocr register has bit 30 set for sector addressing. | |
1555 | */ | |
87e88659 | 1556 | if (rocr & BIT(30)) |
b676f039 PR |
1557 | mmc_card_set_blockaddr(card); |
1558 | ||
dfe86cba AH |
1559 | /* Erase size depends on CSD and Extended CSD */ |
1560 | mmc_set_erase_size(card); | |
6abaa0c9 | 1561 | } |
7ea239d9 | 1562 | |
709de99d CD |
1563 | /* |
1564 | * If enhanced_area_en is TRUE, host needs to enable ERASE_GRP_DEF | |
25985edc | 1565 | * bit. This bit will be lost every time after a reset or power off. |
709de99d | 1566 | */ |
69803d4f | 1567 | if (card->ext_csd.partition_setting_completed || |
83bb24aa | 1568 | (card->ext_csd.rev >= 3 && (host->caps2 & MMC_CAP2_HC_ERASE_SZ))) { |
709de99d | 1569 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
b23cf0bd SJ |
1570 | EXT_CSD_ERASE_GROUP_DEF, 1, |
1571 | card->ext_csd.generic_cmd6_time); | |
709de99d CD |
1572 | |
1573 | if (err && err != -EBADMSG) | |
1574 | goto free_card; | |
1575 | ||
1576 | if (err) { | |
1577 | err = 0; | |
1578 | /* | |
1579 | * Just disable enhanced area off & sz | |
1580 | * will try to enable ERASE_GROUP_DEF | |
1581 | * during next time reinit | |
1582 | */ | |
1583 | card->ext_csd.enhanced_area_offset = -EINVAL; | |
1584 | card->ext_csd.enhanced_area_size = -EINVAL; | |
1585 | } else { | |
1586 | card->ext_csd.erase_group_def = 1; | |
1587 | /* | |
1588 | * enable ERASE_GRP_DEF successfully. | |
1589 | * This will affect the erase size, so | |
1590 | * here need to reset erase size | |
1591 | */ | |
1592 | mmc_set_erase_size(card); | |
1593 | } | |
1594 | } | |
1595 | ||
41e2a489 PR |
1596 | /* |
1597 | * Ensure eMMC user default partition is enabled | |
1598 | */ | |
371a689f AW |
1599 | if (card->ext_csd.part_config & EXT_CSD_PART_CONFIG_ACC_MASK) { |
1600 | card->ext_csd.part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK; | |
1601 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONFIG, | |
1602 | card->ext_csd.part_config, | |
1603 | card->ext_csd.part_time); | |
1604 | if (err && err != -EBADMSG) | |
1605 | goto free_card; | |
41e2a489 PR |
1606 | } |
1607 | ||
bec8726a | 1608 | /* |
43235679 | 1609 | * Enable power_off_notification byte in the ext_csd register |
bec8726a | 1610 | */ |
43235679 | 1611 | if (card->ext_csd.rev >= 6) { |
bec8726a G |
1612 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
1613 | EXT_CSD_POWER_OFF_NOTIFICATION, | |
1614 | EXT_CSD_POWER_ON, | |
1615 | card->ext_csd.generic_cmd6_time); | |
1616 | if (err && err != -EBADMSG) | |
1617 | goto free_card; | |
bec8726a | 1618 | |
96a85d54 G |
1619 | /* |
1620 | * The err can be -EBADMSG or 0, | |
1621 | * so check for success and update the flag | |
1622 | */ | |
1623 | if (!err) | |
e6c08586 | 1624 | card->ext_csd.power_off_notification = EXT_CSD_POWER_ON; |
96a85d54 | 1625 | } |
bec8726a | 1626 | |
89a73cf5 | 1627 | /* |
577fb131 | 1628 | * Select timing interface |
dfc13e84 | 1629 | */ |
577fb131 SJ |
1630 | err = mmc_select_timing(card); |
1631 | if (err) | |
1632 | goto free_card; | |
dfc13e84 | 1633 | |
a4924c71 | 1634 | if (mmc_card_hs200(card)) { |
577fb131 SJ |
1635 | err = mmc_hs200_tuning(card); |
1636 | if (err) | |
4b75bffc | 1637 | goto free_card; |
0a5b6438 SJ |
1638 | |
1639 | err = mmc_select_hs400(card); | |
1640 | if (err) | |
4b75bffc | 1641 | goto free_card; |
577fb131 SJ |
1642 | } else if (mmc_card_hs(card)) { |
1643 | /* Select the desired bus width optionally */ | |
1644 | err = mmc_select_bus_width(card); | |
f7414943 | 1645 | if (err >= 0) { |
577fb131 SJ |
1646 | err = mmc_select_hs_ddr(card); |
1647 | if (err) | |
4b75bffc | 1648 | goto free_card; |
ef0b27d4 | 1649 | } |
89a73cf5 PO |
1650 | } |
1651 | ||
2385049d SJ |
1652 | /* |
1653 | * Choose the power class with selected bus interface | |
1654 | */ | |
1655 | mmc_select_powerclass(card); | |
1656 | ||
52d0974e SJ |
1657 | /* |
1658 | * Enable HPI feature (if supported) | |
1659 | */ | |
1660 | if (card->ext_csd.hpi) { | |
1661 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1662 | EXT_CSD_HPI_MGMT, 1, | |
1663 | card->ext_csd.generic_cmd6_time); | |
1664 | if (err && err != -EBADMSG) | |
1665 | goto free_card; | |
1666 | if (err) { | |
6606110d JP |
1667 | pr_warn("%s: Enabling HPI failed\n", |
1668 | mmc_hostname(card->host)); | |
52d0974e SJ |
1669 | err = 0; |
1670 | } else | |
1671 | card->ext_csd.hpi_en = 1; | |
1672 | } | |
1673 | ||
881d1c25 SJ |
1674 | /* |
1675 | * If cache size is higher than 0, this indicates | |
1676 | * the existence of cache and it can be turned on. | |
1677 | */ | |
7536d3f8 | 1678 | if (card->ext_csd.cache_size > 0) { |
881d1c25 | 1679 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
8bc0678b SJ |
1680 | EXT_CSD_CACHE_CTRL, 1, |
1681 | card->ext_csd.generic_cmd6_time); | |
881d1c25 SJ |
1682 | if (err && err != -EBADMSG) |
1683 | goto free_card; | |
1684 | ||
1685 | /* | |
1686 | * Only if no error, cache is turned on successfully. | |
1687 | */ | |
8bc0678b | 1688 | if (err) { |
6606110d JP |
1689 | pr_warn("%s: Cache is supported, but failed to turn on (%d)\n", |
1690 | mmc_hostname(card->host), err); | |
8bc0678b SJ |
1691 | card->ext_csd.cache_ctrl = 0; |
1692 | err = 0; | |
1693 | } else { | |
1694 | card->ext_csd.cache_ctrl = 1; | |
1695 | } | |
881d1c25 SJ |
1696 | } |
1697 | ||
abd9ac14 SJ |
1698 | /* |
1699 | * The mandatory minimum values are defined for packed command. | |
1700 | * read: 5, write: 3 | |
1701 | */ | |
1702 | if (card->ext_csd.max_packed_writes >= 3 && | |
1703 | card->ext_csd.max_packed_reads >= 5 && | |
1704 | host->caps2 & MMC_CAP2_PACKED_CMD) { | |
1705 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1706 | EXT_CSD_EXP_EVENTS_CTRL, | |
1707 | EXT_CSD_PACKED_EVENT_EN, | |
1708 | card->ext_csd.generic_cmd6_time); | |
1709 | if (err && err != -EBADMSG) | |
1710 | goto free_card; | |
1711 | if (err) { | |
1712 | pr_warn("%s: Enabling packed event failed\n", | |
1713 | mmc_hostname(card->host)); | |
1714 | card->ext_csd.packed_event_en = 0; | |
1715 | err = 0; | |
1716 | } else { | |
1717 | card->ext_csd.packed_event_en = 1; | |
1718 | } | |
1719 | } | |
1720 | ||
6abaa0c9 PO |
1721 | if (!oldcard) |
1722 | host->card = card; | |
1723 | ||
17b0429d | 1724 | return 0; |
6abaa0c9 PO |
1725 | |
1726 | free_card: | |
1727 | if (!oldcard) | |
1728 | mmc_remove_card(card); | |
1729 | err: | |
adf66a0d | 1730 | return err; |
6abaa0c9 PO |
1731 | } |
1732 | ||
07a68216 UH |
1733 | static int mmc_can_sleep(struct mmc_card *card) |
1734 | { | |
1735 | return (card && card->ext_csd.rev >= 3); | |
1736 | } | |
1737 | ||
1738 | static int mmc_sleep(struct mmc_host *host) | |
1739 | { | |
1740 | struct mmc_command cmd = {0}; | |
1741 | struct mmc_card *card = host->card; | |
cb962e04 | 1742 | unsigned int timeout_ms = DIV_ROUND_UP(card->ext_csd.sa_timeout, 10000); |
07a68216 UH |
1743 | int err; |
1744 | ||
436f8daa AH |
1745 | /* Re-tuning can't be done once the card is deselected */ |
1746 | mmc_retune_hold(host); | |
1747 | ||
07a68216 UH |
1748 | err = mmc_deselect_cards(host); |
1749 | if (err) | |
436f8daa | 1750 | goto out_release; |
07a68216 UH |
1751 | |
1752 | cmd.opcode = MMC_SLEEP_AWAKE; | |
1753 | cmd.arg = card->rca << 16; | |
1754 | cmd.arg |= 1 << 15; | |
1755 | ||
cb962e04 UH |
1756 | /* |
1757 | * If the max_busy_timeout of the host is specified, validate it against | |
1758 | * the sleep cmd timeout. A failure means we need to prevent the host | |
1759 | * from doing hw busy detection, which is done by converting to a R1 | |
1760 | * response instead of a R1B. | |
1761 | */ | |
1762 | if (host->max_busy_timeout && (timeout_ms > host->max_busy_timeout)) { | |
1763 | cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; | |
1764 | } else { | |
1765 | cmd.flags = MMC_RSP_R1B | MMC_CMD_AC; | |
1766 | cmd.busy_timeout = timeout_ms; | |
1767 | } | |
1768 | ||
07a68216 UH |
1769 | err = mmc_wait_for_cmd(host, &cmd, 0); |
1770 | if (err) | |
436f8daa | 1771 | goto out_release; |
07a68216 UH |
1772 | |
1773 | /* | |
1774 | * If the host does not wait while the card signals busy, then we will | |
1775 | * will have to wait the sleep/awake timeout. Note, we cannot use the | |
1776 | * SEND_STATUS command to poll the status because that command (and most | |
1777 | * others) is invalid while the card sleeps. | |
1778 | */ | |
cb962e04 UH |
1779 | if (!cmd.busy_timeout || !(host->caps & MMC_CAP_WAIT_WHILE_BUSY)) |
1780 | mmc_delay(timeout_ms); | |
07a68216 | 1781 | |
436f8daa AH |
1782 | out_release: |
1783 | mmc_retune_release(host); | |
07a68216 UH |
1784 | return err; |
1785 | } | |
1786 | ||
e6c08586 UH |
1787 | static int mmc_can_poweroff_notify(const struct mmc_card *card) |
1788 | { | |
1789 | return card && | |
1790 | mmc_card_mmc(card) && | |
1791 | (card->ext_csd.power_off_notification == EXT_CSD_POWER_ON); | |
1792 | } | |
1793 | ||
1794 | static int mmc_poweroff_notify(struct mmc_card *card, unsigned int notify_type) | |
1795 | { | |
1796 | unsigned int timeout = card->ext_csd.generic_cmd6_time; | |
1797 | int err; | |
1798 | ||
1799 | /* Use EXT_CSD_POWER_OFF_SHORT as default notification type. */ | |
1800 | if (notify_type == EXT_CSD_POWER_OFF_LONG) | |
1801 | timeout = card->ext_csd.power_off_longtime; | |
1802 | ||
878e200b UH |
1803 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
1804 | EXT_CSD_POWER_OFF_NOTIFICATION, | |
4509f847 | 1805 | notify_type, timeout, true, false, false); |
e6c08586 UH |
1806 | if (err) |
1807 | pr_err("%s: Power Off Notification timed out, %u\n", | |
1808 | mmc_hostname(card->host), timeout); | |
1809 | ||
1810 | /* Disable the power off notification after the switch operation. */ | |
1811 | card->ext_csd.power_off_notification = EXT_CSD_NO_POWER_NOTIFICATION; | |
1812 | ||
1813 | return err; | |
1814 | } | |
1815 | ||
6abaa0c9 PO |
1816 | /* |
1817 | * Host is being removed. Free up the current card. | |
1818 | */ | |
1819 | static void mmc_remove(struct mmc_host *host) | |
1820 | { | |
1821 | BUG_ON(!host); | |
1822 | BUG_ON(!host->card); | |
1823 | ||
1824 | mmc_remove_card(host->card); | |
1825 | host->card = NULL; | |
1826 | } | |
1827 | ||
d3049504 AH |
1828 | /* |
1829 | * Card detection - card is alive. | |
1830 | */ | |
1831 | static int mmc_alive(struct mmc_host *host) | |
1832 | { | |
1833 | return mmc_send_status(host->card, NULL); | |
1834 | } | |
1835 | ||
6abaa0c9 PO |
1836 | /* |
1837 | * Card detection callback from host. | |
1838 | */ | |
1839 | static void mmc_detect(struct mmc_host *host) | |
1840 | { | |
1841 | int err; | |
1842 | ||
1843 | BUG_ON(!host); | |
1844 | BUG_ON(!host->card); | |
1845 | ||
e94cfef6 | 1846 | mmc_get_card(host->card); |
6abaa0c9 PO |
1847 | |
1848 | /* | |
1849 | * Just check if our card has been removed. | |
1850 | */ | |
d3049504 | 1851 | err = _mmc_detect_card_removed(host); |
6abaa0c9 | 1852 | |
e94cfef6 | 1853 | mmc_put_card(host->card); |
6abaa0c9 | 1854 | |
17b0429d | 1855 | if (err) { |
4101c16a | 1856 | mmc_remove(host); |
6abaa0c9 PO |
1857 | |
1858 | mmc_claim_host(host); | |
1859 | mmc_detach_bus(host); | |
7f7e4129 | 1860 | mmc_power_off(host); |
6abaa0c9 PO |
1861 | mmc_release_host(host); |
1862 | } | |
1863 | } | |
1864 | ||
03d071fc | 1865 | static int _mmc_suspend(struct mmc_host *host, bool is_suspend) |
6abaa0c9 | 1866 | { |
c3805467 | 1867 | int err = 0; |
03d071fc UH |
1868 | unsigned int notify_type = is_suspend ? EXT_CSD_POWER_OFF_SHORT : |
1869 | EXT_CSD_POWER_OFF_LONG; | |
c3805467 | 1870 | |
6abaa0c9 PO |
1871 | BUG_ON(!host); |
1872 | BUG_ON(!host->card); | |
7ea239d9 | 1873 | |
6abaa0c9 | 1874 | mmc_claim_host(host); |
881d926d | 1875 | |
9ec775f7 UH |
1876 | if (mmc_card_suspended(host->card)) |
1877 | goto out; | |
1878 | ||
39b9431b UH |
1879 | if (mmc_card_doing_bkops(host->card)) { |
1880 | err = mmc_stop_bkops(host->card); | |
1881 | if (err) | |
1882 | goto out; | |
1883 | } | |
1884 | ||
10e5d965 | 1885 | err = mmc_flush_cache(host->card); |
881d926d ME |
1886 | if (err) |
1887 | goto out; | |
1888 | ||
43235679 | 1889 | if (mmc_can_poweroff_notify(host->card) && |
53275c21 | 1890 | ((host->caps2 & MMC_CAP2_FULL_PWR_CYCLE) || !is_suspend)) |
03d071fc | 1891 | err = mmc_poweroff_notify(host->card, notify_type); |
07a68216 UH |
1892 | else if (mmc_can_sleep(host->card)) |
1893 | err = mmc_sleep(host); | |
e6c08586 | 1894 | else if (!mmc_host_is_spi(host)) |
85e727ed | 1895 | err = mmc_deselect_cards(host); |
95cdfb72 | 1896 | |
9ec775f7 | 1897 | if (!err) { |
74590263 | 1898 | mmc_power_off(host); |
9ec775f7 UH |
1899 | mmc_card_set_suspended(host->card); |
1900 | } | |
881d926d ME |
1901 | out: |
1902 | mmc_release_host(host); | |
c3805467 | 1903 | return err; |
6abaa0c9 | 1904 | } |
7ea239d9 | 1905 | |
03d071fc | 1906 | /* |
0cb403a2 | 1907 | * Suspend callback |
03d071fc UH |
1908 | */ |
1909 | static int mmc_suspend(struct mmc_host *host) | |
1910 | { | |
0cb403a2 UH |
1911 | int err; |
1912 | ||
1913 | err = _mmc_suspend(host, true); | |
1914 | if (!err) { | |
1915 | pm_runtime_disable(&host->card->dev); | |
1916 | pm_runtime_set_suspended(&host->card->dev); | |
1917 | } | |
1918 | ||
1919 | return err; | |
03d071fc UH |
1920 | } |
1921 | ||
6abaa0c9 | 1922 | /* |
6abaa0c9 PO |
1923 | * This function tries to determine if the same card is still present |
1924 | * and, if so, restore all state to it. | |
1925 | */ | |
0cb403a2 | 1926 | static int _mmc_resume(struct mmc_host *host) |
6abaa0c9 | 1927 | { |
9ec775f7 | 1928 | int err = 0; |
6abaa0c9 PO |
1929 | |
1930 | BUG_ON(!host); | |
1931 | BUG_ON(!host->card); | |
1932 | ||
1933 | mmc_claim_host(host); | |
9ec775f7 UH |
1934 | |
1935 | if (!mmc_card_suspended(host->card)) | |
1936 | goto out; | |
1937 | ||
69041150 | 1938 | mmc_power_up(host, host->card->ocr); |
69041150 | 1939 | err = mmc_init_card(host, host->card->ocr, host->card); |
9ec775f7 | 1940 | mmc_card_clr_suspended(host->card); |
2986d0bf | 1941 | |
9ec775f7 UH |
1942 | out: |
1943 | mmc_release_host(host); | |
95cdfb72 | 1944 | return err; |
6abaa0c9 PO |
1945 | } |
1946 | ||
9ec775f7 UH |
1947 | /* |
1948 | * Shutdown callback | |
1949 | */ | |
1950 | static int mmc_shutdown(struct mmc_host *host) | |
1951 | { | |
1952 | int err = 0; | |
1953 | ||
1954 | /* | |
1955 | * In a specific case for poweroff notify, we need to resume the card | |
1956 | * before we can shutdown it properly. | |
1957 | */ | |
1958 | if (mmc_can_poweroff_notify(host->card) && | |
1959 | !(host->caps2 & MMC_CAP2_FULL_PWR_CYCLE)) | |
0cb403a2 | 1960 | err = _mmc_resume(host); |
9ec775f7 UH |
1961 | |
1962 | if (!err) | |
1963 | err = _mmc_suspend(host, false); | |
1964 | ||
1965 | return err; | |
1966 | } | |
c4d770d7 | 1967 | |
0cb403a2 UH |
1968 | /* |
1969 | * Callback for resume. | |
1970 | */ | |
1971 | static int mmc_resume(struct mmc_host *host) | |
1972 | { | |
0cb403a2 | 1973 | pm_runtime_enable(&host->card->dev); |
c29536e8 | 1974 | return 0; |
0cb403a2 UH |
1975 | } |
1976 | ||
c4d770d7 UH |
1977 | /* |
1978 | * Callback for runtime_suspend. | |
1979 | */ | |
1980 | static int mmc_runtime_suspend(struct mmc_host *host) | |
1981 | { | |
1982 | int err; | |
1983 | ||
1984 | if (!(host->caps & MMC_CAP_AGGRESSIVE_PM)) | |
1985 | return 0; | |
1986 | ||
0cb403a2 | 1987 | err = _mmc_suspend(host, true); |
0cc81a8c | 1988 | if (err) |
f42cf8d6 | 1989 | pr_err("%s: error %d doing aggressive suspend\n", |
c4d770d7 | 1990 | mmc_hostname(host), err); |
c4d770d7 | 1991 | |
c4d770d7 UH |
1992 | return err; |
1993 | } | |
1994 | ||
1995 | /* | |
1996 | * Callback for runtime_resume. | |
1997 | */ | |
1998 | static int mmc_runtime_resume(struct mmc_host *host) | |
1999 | { | |
2000 | int err; | |
2001 | ||
0cb403a2 | 2002 | err = _mmc_resume(host); |
520322d9 | 2003 | if (err && err != -ENOMEDIUM) |
c29536e8 | 2004 | pr_err("%s: error %d doing runtime resume\n", |
c4d770d7 UH |
2005 | mmc_hostname(host), err); |
2006 | ||
c4d770d7 UH |
2007 | return 0; |
2008 | } | |
2009 | ||
f855a371 JR |
2010 | int mmc_can_reset(struct mmc_card *card) |
2011 | { | |
2012 | u8 rst_n_function; | |
2013 | ||
2014 | rst_n_function = card->ext_csd.rst_n_function; | |
2015 | if ((rst_n_function & EXT_CSD_RST_N_EN_MASK) != EXT_CSD_RST_N_ENABLED) | |
2016 | return 0; | |
2017 | return 1; | |
2018 | } | |
2019 | EXPORT_SYMBOL(mmc_can_reset); | |
2020 | ||
2021 | static int mmc_reset(struct mmc_host *host) | |
2022 | { | |
2023 | struct mmc_card *card = host->card; | |
f855a371 | 2024 | |
437db4c6 AH |
2025 | /* |
2026 | * In the case of recovery, we can't expect flushing the cache to work | |
2027 | * always, but we have a go and ignore errors. | |
2028 | */ | |
2029 | mmc_flush_cache(host->card); | |
2030 | ||
4e6c7178 GG |
2031 | if ((host->caps & MMC_CAP_HW_RESET) && host->ops->hw_reset && |
2032 | mmc_can_reset(card)) { | |
2033 | /* If the card accept RST_n signal, send it. */ | |
2034 | mmc_set_clock(host, host->f_init); | |
2035 | host->ops->hw_reset(host); | |
2036 | /* Set initial state and call mmc_set_ios */ | |
2037 | mmc_set_initial_state(host); | |
2038 | } else { | |
2039 | /* Do a brute force power cycle */ | |
2040 | mmc_power_cycle(host, card->ocr); | |
2041 | } | |
364549dd | 2042 | return mmc_init_card(host, card->ocr, card); |
f855a371 JR |
2043 | } |
2044 | ||
6abaa0c9 PO |
2045 | static const struct mmc_bus_ops mmc_ops = { |
2046 | .remove = mmc_remove, | |
2047 | .detect = mmc_detect, | |
2048 | .suspend = mmc_suspend, | |
2049 | .resume = mmc_resume, | |
c4d770d7 UH |
2050 | .runtime_suspend = mmc_runtime_suspend, |
2051 | .runtime_resume = mmc_runtime_resume, | |
d3049504 | 2052 | .alive = mmc_alive, |
486fdbbc | 2053 | .shutdown = mmc_shutdown, |
f855a371 | 2054 | .reset = mmc_reset, |
6abaa0c9 PO |
2055 | }; |
2056 | ||
2057 | /* | |
2058 | * Starting point for MMC card init. | |
2059 | */ | |
807e8e40 | 2060 | int mmc_attach_mmc(struct mmc_host *host) |
6abaa0c9 PO |
2061 | { |
2062 | int err; | |
69041150 | 2063 | u32 ocr, rocr; |
6abaa0c9 PO |
2064 | |
2065 | BUG_ON(!host); | |
d84075c8 | 2066 | WARN_ON(!host->claimed); |
6abaa0c9 | 2067 | |
44669034 SNX |
2068 | /* Set correct bus mode for MMC before attempting attach */ |
2069 | if (!mmc_host_is_spi(host)) | |
2070 | mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); | |
2071 | ||
807e8e40 AR |
2072 | err = mmc_send_op_cond(host, 0, &ocr); |
2073 | if (err) | |
2074 | return err; | |
2075 | ||
2501c917 | 2076 | mmc_attach_bus(host, &mmc_ops); |
8f230f45 TI |
2077 | if (host->ocr_avail_mmc) |
2078 | host->ocr_avail = host->ocr_avail_mmc; | |
6abaa0c9 | 2079 | |
af517150 DB |
2080 | /* |
2081 | * We need to get OCR a different way for SPI. | |
2082 | */ | |
2083 | if (mmc_host_is_spi(host)) { | |
2084 | err = mmc_spi_read_ocr(host, 1, &ocr); | |
2085 | if (err) | |
2086 | goto err; | |
2087 | } | |
2088 | ||
69041150 | 2089 | rocr = mmc_select_voltage(host, ocr); |
6abaa0c9 PO |
2090 | |
2091 | /* | |
2092 | * Can we support the voltage of the card? | |
2093 | */ | |
69041150 | 2094 | if (!rocr) { |
109b5bed | 2095 | err = -EINVAL; |
6abaa0c9 | 2096 | goto err; |
109b5bed | 2097 | } |
6abaa0c9 PO |
2098 | |
2099 | /* | |
2100 | * Detect and init the card. | |
2101 | */ | |
69041150 | 2102 | err = mmc_init_card(host, rocr, NULL); |
17b0429d | 2103 | if (err) |
6abaa0c9 PO |
2104 | goto err; |
2105 | ||
2106 | mmc_release_host(host); | |
4101c16a | 2107 | err = mmc_add_card(host->card); |
7ea239d9 | 2108 | if (err) |
2986d0bf | 2109 | goto remove_card; |
7ea239d9 | 2110 | |
2860d060 | 2111 | mmc_claim_host(host); |
7ea239d9 PO |
2112 | return 0; |
2113 | ||
2986d0bf | 2114 | remove_card: |
6abaa0c9 | 2115 | mmc_remove_card(host->card); |
2986d0bf | 2116 | mmc_claim_host(host); |
807e8e40 | 2117 | host->card = NULL; |
7ea239d9 PO |
2118 | err: |
2119 | mmc_detach_bus(host); | |
7ea239d9 | 2120 | |
a3c76eb9 | 2121 | pr_err("%s: error %d whilst initialising MMC card\n", |
109b5bed PO |
2122 | mmc_hostname(host), err); |
2123 | ||
adf66a0d | 2124 | return err; |
7ea239d9 | 2125 | } |