Commit | Line | Data |
---|---|---|
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> | |
5a0e3ad6 | 14 | #include <linux/slab.h> |
0205a904 | 15 | #include <linux/stat.h> |
0cb403a2 | 16 | #include <linux/pm_runtime.h> |
7ea239d9 PO |
17 | |
18 | #include <linux/mmc/host.h> | |
19 | #include <linux/mmc/card.h> | |
20 | #include <linux/mmc/mmc.h> | |
21 | ||
22 | #include "core.h" | |
4101c16a | 23 | #include "bus.h" |
7ea239d9 | 24 | #include "mmc_ops.h" |
4c4cb171 | 25 | #include "sd_ops.h" |
7ea239d9 PO |
26 | |
27 | static const unsigned int tran_exp[] = { | |
28 | 10000, 100000, 1000000, 10000000, | |
29 | 0, 0, 0, 0 | |
30 | }; | |
31 | ||
32 | static const unsigned char tran_mant[] = { | |
33 | 0, 10, 12, 13, 15, 20, 25, 30, | |
34 | 35, 40, 45, 50, 55, 60, 70, 80, | |
35 | }; | |
36 | ||
37 | static const unsigned int tacc_exp[] = { | |
38 | 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, | |
39 | }; | |
40 | ||
41 | static const unsigned int tacc_mant[] = { | |
42 | 0, 10, 12, 13, 15, 20, 25, 30, | |
43 | 35, 40, 45, 50, 55, 60, 70, 80, | |
44 | }; | |
45 | ||
46 | #define UNSTUFF_BITS(resp,start,size) \ | |
47 | ({ \ | |
48 | const int __size = size; \ | |
49 | const u32 __mask = (__size < 32 ? 1 << __size : 0) - 1; \ | |
50 | const int __off = 3 - ((start) / 32); \ | |
51 | const int __shft = (start) & 31; \ | |
52 | u32 __res; \ | |
53 | \ | |
54 | __res = resp[__off] >> __shft; \ | |
55 | if (__size + __shft > 32) \ | |
56 | __res |= resp[__off-1] << ((32 - __shft) % 32); \ | |
57 | __res & __mask; \ | |
58 | }) | |
59 | ||
60 | /* | |
61 | * Given the decoded CSD structure, decode the raw CID to our CID structure. | |
62 | */ | |
bd766312 | 63 | static int mmc_decode_cid(struct mmc_card *card) |
7ea239d9 PO |
64 | { |
65 | u32 *resp = card->raw_cid; | |
66 | ||
67 | /* | |
68 | * The selection of the format here is based upon published | |
69 | * specs from sandisk and from what people have reported. | |
70 | */ | |
71 | switch (card->csd.mmca_vsn) { | |
72 | case 0: /* MMC v1.0 - v1.2 */ | |
73 | case 1: /* MMC v1.4 */ | |
74 | card->cid.manfid = UNSTUFF_BITS(resp, 104, 24); | |
75 | card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); | |
76 | card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); | |
77 | card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); | |
78 | card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); | |
79 | card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); | |
80 | card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); | |
81 | card->cid.prod_name[6] = UNSTUFF_BITS(resp, 48, 8); | |
82 | card->cid.hwrev = UNSTUFF_BITS(resp, 44, 4); | |
83 | card->cid.fwrev = UNSTUFF_BITS(resp, 40, 4); | |
84 | card->cid.serial = UNSTUFF_BITS(resp, 16, 24); | |
85 | card->cid.month = UNSTUFF_BITS(resp, 12, 4); | |
86 | card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; | |
87 | break; | |
88 | ||
89 | case 2: /* MMC v2.0 - v2.2 */ | |
90 | case 3: /* MMC v3.1 - v3.3 */ | |
91 | case 4: /* MMC v4 */ | |
92 | card->cid.manfid = UNSTUFF_BITS(resp, 120, 8); | |
93 | card->cid.oemid = UNSTUFF_BITS(resp, 104, 16); | |
94 | card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); | |
95 | card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); | |
96 | card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); | |
97 | card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); | |
98 | card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); | |
99 | card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); | |
51e7e8b6 | 100 | card->cid.prv = UNSTUFF_BITS(resp, 48, 8); |
7ea239d9 PO |
101 | card->cid.serial = UNSTUFF_BITS(resp, 16, 32); |
102 | card->cid.month = UNSTUFF_BITS(resp, 12, 4); | |
103 | card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; | |
104 | break; | |
105 | ||
106 | default: | |
a3c76eb9 | 107 | pr_err("%s: card has unknown MMCA version %d\n", |
7ea239d9 | 108 | mmc_hostname(card->host), card->csd.mmca_vsn); |
bd766312 | 109 | return -EINVAL; |
7ea239d9 | 110 | } |
bd766312 PO |
111 | |
112 | return 0; | |
7ea239d9 PO |
113 | } |
114 | ||
dfe86cba AH |
115 | static void mmc_set_erase_size(struct mmc_card *card) |
116 | { | |
117 | if (card->ext_csd.erase_group_def & 1) | |
118 | card->erase_size = card->ext_csd.hc_erase_size; | |
119 | else | |
120 | card->erase_size = card->csd.erase_size; | |
121 | ||
122 | mmc_init_erase(card); | |
123 | } | |
124 | ||
7ea239d9 PO |
125 | /* |
126 | * Given a 128-bit response, decode to our card CSD structure. | |
127 | */ | |
bd766312 | 128 | static int mmc_decode_csd(struct mmc_card *card) |
7ea239d9 PO |
129 | { |
130 | struct mmc_csd *csd = &card->csd; | |
dfe86cba | 131 | unsigned int e, m, a, b; |
7ea239d9 PO |
132 | u32 *resp = card->raw_csd; |
133 | ||
134 | /* | |
135 | * We only understand CSD structure v1.1 and v1.2. | |
136 | * v1.2 has extra information in bits 15, 11 and 10. | |
6da24b78 | 137 | * We also support eMMC v4.4 & v4.41. |
7ea239d9 | 138 | */ |
6da24b78 KP |
139 | csd->structure = UNSTUFF_BITS(resp, 126, 2); |
140 | if (csd->structure == 0) { | |
a3c76eb9 | 141 | pr_err("%s: unrecognised CSD structure version %d\n", |
6da24b78 | 142 | mmc_hostname(card->host), csd->structure); |
bd766312 | 143 | return -EINVAL; |
7ea239d9 PO |
144 | } |
145 | ||
146 | csd->mmca_vsn = UNSTUFF_BITS(resp, 122, 4); | |
147 | m = UNSTUFF_BITS(resp, 115, 4); | |
148 | e = UNSTUFF_BITS(resp, 112, 3); | |
149 | csd->tacc_ns = (tacc_exp[e] * tacc_mant[m] + 9) / 10; | |
150 | csd->tacc_clks = UNSTUFF_BITS(resp, 104, 8) * 100; | |
151 | ||
152 | m = UNSTUFF_BITS(resp, 99, 4); | |
153 | e = UNSTUFF_BITS(resp, 96, 3); | |
154 | csd->max_dtr = tran_exp[e] * tran_mant[m]; | |
155 | csd->cmdclass = UNSTUFF_BITS(resp, 84, 12); | |
156 | ||
157 | e = UNSTUFF_BITS(resp, 47, 3); | |
158 | m = UNSTUFF_BITS(resp, 62, 12); | |
159 | csd->capacity = (1 + m) << (e + 2); | |
160 | ||
161 | csd->read_blkbits = UNSTUFF_BITS(resp, 80, 4); | |
162 | csd->read_partial = UNSTUFF_BITS(resp, 79, 1); | |
163 | csd->write_misalign = UNSTUFF_BITS(resp, 78, 1); | |
164 | csd->read_misalign = UNSTUFF_BITS(resp, 77, 1); | |
165 | csd->r2w_factor = UNSTUFF_BITS(resp, 26, 3); | |
166 | csd->write_blkbits = UNSTUFF_BITS(resp, 22, 4); | |
167 | csd->write_partial = UNSTUFF_BITS(resp, 21, 1); | |
bd766312 | 168 | |
dfe86cba AH |
169 | if (csd->write_blkbits >= 9) { |
170 | a = UNSTUFF_BITS(resp, 42, 5); | |
171 | b = UNSTUFF_BITS(resp, 37, 5); | |
172 | csd->erase_size = (a + 1) * (b + 1); | |
173 | csd->erase_size <<= csd->write_blkbits - 9; | |
174 | } | |
175 | ||
bd766312 | 176 | return 0; |
7ea239d9 PO |
177 | } |
178 | ||
179 | /* | |
08ee80cc | 180 | * Read extended CSD. |
7ea239d9 | 181 | */ |
08ee80cc | 182 | static int mmc_get_ext_csd(struct mmc_card *card, u8 **new_ext_csd) |
7ea239d9 PO |
183 | { |
184 | int err; | |
185 | u8 *ext_csd; | |
186 | ||
187 | BUG_ON(!card); | |
08ee80cc PR |
188 | BUG_ON(!new_ext_csd); |
189 | ||
190 | *new_ext_csd = NULL; | |
7ea239d9 | 191 | |
7ea239d9 | 192 | if (card->csd.mmca_vsn < CSD_SPEC_VER_4) |
17b0429d | 193 | return 0; |
7ea239d9 PO |
194 | |
195 | /* | |
196 | * As the ext_csd is so large and mostly unused, we don't store the | |
197 | * raw block in mmc_card. | |
198 | */ | |
199 | ext_csd = kmalloc(512, GFP_KERNEL); | |
200 | if (!ext_csd) { | |
a3c76eb9 | 201 | pr_err("%s: could not allocate a buffer to " |
adf66a0d | 202 | "receive the ext_csd.\n", mmc_hostname(card->host)); |
17b0429d | 203 | return -ENOMEM; |
7ea239d9 PO |
204 | } |
205 | ||
206 | err = mmc_send_ext_csd(card, ext_csd); | |
17b0429d | 207 | if (err) { |
08ee80cc PR |
208 | kfree(ext_csd); |
209 | *new_ext_csd = NULL; | |
210 | ||
d08ebedd WM |
211 | /* If the host or the card can't do the switch, |
212 | * fail more gracefully. */ | |
213 | if ((err != -EINVAL) | |
214 | && (err != -ENOSYS) | |
215 | && (err != -EFAULT)) | |
08ee80cc | 216 | return err; |
adf66a0d | 217 | |
7ea239d9 PO |
218 | /* |
219 | * High capacity cards should have this "magic" size | |
220 | * stored in their CSD. | |
221 | */ | |
222 | if (card->csd.capacity == (4096 * 512)) { | |
a3c76eb9 | 223 | pr_err("%s: unable to read EXT_CSD " |
7ea239d9 PO |
224 | "on a possible high capacity card. " |
225 | "Card will be ignored.\n", | |
226 | mmc_hostname(card->host)); | |
227 | } else { | |
a3c76eb9 | 228 | pr_warning("%s: unable to read " |
7ea239d9 PO |
229 | "EXT_CSD, performance might " |
230 | "suffer.\n", | |
231 | mmc_hostname(card->host)); | |
17b0429d | 232 | err = 0; |
7ea239d9 | 233 | } |
08ee80cc PR |
234 | } else |
235 | *new_ext_csd = ext_csd; | |
adf66a0d | 236 | |
08ee80cc PR |
237 | return err; |
238 | } | |
239 | ||
96cf5f02 SJ |
240 | static void mmc_select_card_type(struct mmc_card *card) |
241 | { | |
242 | struct mmc_host *host = card->host; | |
243 | u8 card_type = card->ext_csd.raw_card_type & EXT_CSD_CARD_TYPE_MASK; | |
5f1a4dd0 | 244 | u32 caps = host->caps, caps2 = host->caps2; |
577fb131 | 245 | unsigned int hs_max_dtr = 0, hs200_max_dtr = 0; |
2415c0ef | 246 | unsigned int avail_type = 0; |
96cf5f02 | 247 | |
2415c0ef SJ |
248 | if (caps & MMC_CAP_MMC_HIGHSPEED && |
249 | card_type & EXT_CSD_CARD_TYPE_HS_26) { | |
96cf5f02 | 250 | hs_max_dtr = MMC_HIGH_26_MAX_DTR; |
2415c0ef SJ |
251 | avail_type |= EXT_CSD_CARD_TYPE_HS_26; |
252 | } | |
96cf5f02 SJ |
253 | |
254 | if (caps & MMC_CAP_MMC_HIGHSPEED && | |
2415c0ef | 255 | card_type & EXT_CSD_CARD_TYPE_HS_52) { |
96cf5f02 | 256 | hs_max_dtr = MMC_HIGH_52_MAX_DTR; |
2415c0ef SJ |
257 | avail_type |= EXT_CSD_CARD_TYPE_HS_52; |
258 | } | |
96cf5f02 | 259 | |
2415c0ef SJ |
260 | if (caps & MMC_CAP_1_8V_DDR && |
261 | card_type & EXT_CSD_CARD_TYPE_DDR_1_8V) { | |
96cf5f02 | 262 | hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; |
2415c0ef SJ |
263 | avail_type |= EXT_CSD_CARD_TYPE_DDR_1_8V; |
264 | } | |
265 | ||
266 | if (caps & MMC_CAP_1_2V_DDR && | |
267 | card_type & EXT_CSD_CARD_TYPE_DDR_1_2V) { | |
268 | hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; | |
269 | avail_type |= EXT_CSD_CARD_TYPE_DDR_1_2V; | |
270 | } | |
96cf5f02 | 271 | |
2415c0ef SJ |
272 | if (caps2 & MMC_CAP2_HS200_1_8V_SDR && |
273 | card_type & EXT_CSD_CARD_TYPE_HS200_1_8V) { | |
577fb131 | 274 | hs200_max_dtr = MMC_HS200_MAX_DTR; |
2415c0ef SJ |
275 | avail_type |= EXT_CSD_CARD_TYPE_HS200_1_8V; |
276 | } | |
277 | ||
278 | if (caps2 & MMC_CAP2_HS200_1_2V_SDR && | |
279 | card_type & EXT_CSD_CARD_TYPE_HS200_1_2V) { | |
577fb131 | 280 | hs200_max_dtr = MMC_HS200_MAX_DTR; |
2415c0ef SJ |
281 | avail_type |= EXT_CSD_CARD_TYPE_HS200_1_2V; |
282 | } | |
96cf5f02 SJ |
283 | |
284 | card->ext_csd.hs_max_dtr = hs_max_dtr; | |
577fb131 | 285 | card->ext_csd.hs200_max_dtr = hs200_max_dtr; |
2415c0ef | 286 | card->mmc_avail_type = avail_type; |
96cf5f02 SJ |
287 | } |
288 | ||
08ee80cc PR |
289 | /* |
290 | * Decode extended CSD. | |
291 | */ | |
292 | static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd) | |
293 | { | |
e0c368d5 NJ |
294 | int err = 0, idx; |
295 | unsigned int part_size; | |
296 | u8 hc_erase_grp_sz = 0, hc_wp_grp_sz = 0; | |
08ee80cc PR |
297 | |
298 | BUG_ON(!card); | |
299 | ||
300 | if (!ext_csd) | |
301 | return 0; | |
7ea239d9 | 302 | |
6da24b78 | 303 | /* Version is coded in the CSD_STRUCTURE byte in the EXT_CSD register */ |
f39b2dd9 | 304 | card->ext_csd.raw_ext_csd_structure = ext_csd[EXT_CSD_STRUCTURE]; |
6da24b78 | 305 | if (card->csd.structure == 3) { |
f39b2dd9 | 306 | if (card->ext_csd.raw_ext_csd_structure > 2) { |
a3c76eb9 | 307 | pr_err("%s: unrecognised EXT_CSD structure " |
6da24b78 | 308 | "version %d\n", mmc_hostname(card->host), |
f39b2dd9 | 309 | card->ext_csd.raw_ext_csd_structure); |
6da24b78 KP |
310 | err = -EINVAL; |
311 | goto out; | |
312 | } | |
313 | } | |
314 | ||
b1ebe384 | 315 | card->ext_csd.rev = ext_csd[EXT_CSD_REV]; |
6636bad8 | 316 | if (card->ext_csd.rev > 7) { |
a3c76eb9 | 317 | pr_err("%s: unrecognised EXT_CSD revision %d\n", |
6da24b78 | 318 | mmc_hostname(card->host), card->ext_csd.rev); |
00cedfa6 FM |
319 | err = -EINVAL; |
320 | goto out; | |
d7604d76 PO |
321 | } |
322 | ||
f39b2dd9 PR |
323 | card->ext_csd.raw_sectors[0] = ext_csd[EXT_CSD_SEC_CNT + 0]; |
324 | card->ext_csd.raw_sectors[1] = ext_csd[EXT_CSD_SEC_CNT + 1]; | |
325 | card->ext_csd.raw_sectors[2] = ext_csd[EXT_CSD_SEC_CNT + 2]; | |
326 | card->ext_csd.raw_sectors[3] = ext_csd[EXT_CSD_SEC_CNT + 3]; | |
b1ebe384 | 327 | if (card->ext_csd.rev >= 2) { |
d7604d76 PO |
328 | card->ext_csd.sectors = |
329 | ext_csd[EXT_CSD_SEC_CNT + 0] << 0 | | |
330 | ext_csd[EXT_CSD_SEC_CNT + 1] << 8 | | |
331 | ext_csd[EXT_CSD_SEC_CNT + 2] << 16 | | |
332 | ext_csd[EXT_CSD_SEC_CNT + 3] << 24; | |
fc8a0985 HP |
333 | |
334 | /* Cards with density > 2GiB are sector addressed */ | |
335 | if (card->ext_csd.sectors > (2u * 1024 * 1024 * 1024) / 512) | |
d7604d76 PO |
336 | mmc_card_set_blockaddr(card); |
337 | } | |
96cf5f02 | 338 | |
f39b2dd9 | 339 | card->ext_csd.raw_card_type = ext_csd[EXT_CSD_CARD_TYPE]; |
96cf5f02 | 340 | mmc_select_card_type(card); |
7ea239d9 | 341 | |
f39b2dd9 PR |
342 | card->ext_csd.raw_s_a_timeout = ext_csd[EXT_CSD_S_A_TIMEOUT]; |
343 | card->ext_csd.raw_erase_timeout_mult = | |
344 | ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; | |
345 | card->ext_csd.raw_hc_erase_grp_size = | |
346 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; | |
b1ebe384 JL |
347 | if (card->ext_csd.rev >= 3) { |
348 | u8 sa_shift = ext_csd[EXT_CSD_S_A_TIMEOUT]; | |
371a689f AW |
349 | card->ext_csd.part_config = ext_csd[EXT_CSD_PART_CONFIG]; |
350 | ||
351 | /* EXT_CSD value is in units of 10ms, but we store in ms */ | |
352 | card->ext_csd.part_time = 10 * ext_csd[EXT_CSD_PART_SWITCH_TIME]; | |
b1ebe384 JL |
353 | |
354 | /* Sleep / awake timeout in 100ns units */ | |
355 | if (sa_shift > 0 && sa_shift <= 0x17) | |
356 | card->ext_csd.sa_timeout = | |
357 | 1 << ext_csd[EXT_CSD_S_A_TIMEOUT]; | |
dfe86cba AH |
358 | card->ext_csd.erase_group_def = |
359 | ext_csd[EXT_CSD_ERASE_GROUP_DEF]; | |
360 | card->ext_csd.hc_erase_timeout = 300 * | |
361 | ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; | |
362 | card->ext_csd.hc_erase_size = | |
363 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] << 10; | |
f4c5522b AW |
364 | |
365 | card->ext_csd.rel_sectors = ext_csd[EXT_CSD_REL_WR_SEC_C]; | |
371a689f AW |
366 | |
367 | /* | |
368 | * There are two boot regions of equal size, defined in | |
369 | * multiples of 128K. | |
370 | */ | |
e0c368d5 NJ |
371 | if (ext_csd[EXT_CSD_BOOT_MULT] && mmc_boot_partition_access(card->host)) { |
372 | for (idx = 0; idx < MMC_NUM_BOOT_PARTITION; idx++) { | |
373 | part_size = ext_csd[EXT_CSD_BOOT_MULT] << 17; | |
374 | mmc_part_add(card, part_size, | |
375 | EXT_CSD_PART_CONFIG_ACC_BOOT0 + idx, | |
add710ea JR |
376 | "boot%d", idx, true, |
377 | MMC_BLK_DATA_AREA_BOOT); | |
e0c368d5 NJ |
378 | } |
379 | } | |
dfe86cba AH |
380 | } |
381 | ||
f39b2dd9 | 382 | card->ext_csd.raw_hc_erase_gap_size = |
dd13b4ed | 383 | ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; |
f39b2dd9 PR |
384 | card->ext_csd.raw_sec_trim_mult = |
385 | ext_csd[EXT_CSD_SEC_TRIM_MULT]; | |
386 | card->ext_csd.raw_sec_erase_mult = | |
387 | ext_csd[EXT_CSD_SEC_ERASE_MULT]; | |
388 | card->ext_csd.raw_sec_feature_support = | |
389 | ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; | |
390 | card->ext_csd.raw_trim_mult = | |
391 | ext_csd[EXT_CSD_TRIM_MULT]; | |
836dc2fe | 392 | card->ext_csd.raw_partition_support = ext_csd[EXT_CSD_PARTITION_SUPPORT]; |
dfe86cba | 393 | if (card->ext_csd.rev >= 4) { |
709de99d CD |
394 | /* |
395 | * Enhanced area feature support -- check whether the eMMC | |
396 | * card has the Enhanced area enabled. If so, export enhanced | |
397 | * area offset and size to user by adding sysfs interface. | |
398 | */ | |
399 | if ((ext_csd[EXT_CSD_PARTITION_SUPPORT] & 0x2) && | |
f39b2dd9 | 400 | (ext_csd[EXT_CSD_PARTITION_ATTRIBUTE] & 0x1)) { |
e0c368d5 | 401 | hc_erase_grp_sz = |
709de99d | 402 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; |
e0c368d5 | 403 | hc_wp_grp_sz = |
709de99d CD |
404 | ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; |
405 | ||
406 | card->ext_csd.enhanced_area_en = 1; | |
407 | /* | |
408 | * calculate the enhanced data area offset, in bytes | |
409 | */ | |
410 | card->ext_csd.enhanced_area_offset = | |
411 | (ext_csd[139] << 24) + (ext_csd[138] << 16) + | |
412 | (ext_csd[137] << 8) + ext_csd[136]; | |
413 | if (mmc_card_blockaddr(card)) | |
414 | card->ext_csd.enhanced_area_offset <<= 9; | |
415 | /* | |
416 | * calculate the enhanced data area size, in kilobytes | |
417 | */ | |
418 | card->ext_csd.enhanced_area_size = | |
419 | (ext_csd[142] << 16) + (ext_csd[141] << 8) + | |
420 | ext_csd[140]; | |
421 | card->ext_csd.enhanced_area_size *= | |
422 | (size_t)(hc_erase_grp_sz * hc_wp_grp_sz); | |
423 | card->ext_csd.enhanced_area_size <<= 9; | |
424 | } else { | |
425 | /* | |
426 | * If the enhanced area is not enabled, disable these | |
427 | * device attributes. | |
428 | */ | |
429 | card->ext_csd.enhanced_area_offset = -EINVAL; | |
430 | card->ext_csd.enhanced_area_size = -EINVAL; | |
431 | } | |
e0c368d5 NJ |
432 | |
433 | /* | |
434 | * General purpose partition feature support -- | |
435 | * If ext_csd has the size of general purpose partitions, | |
436 | * set size, part_cfg, partition name in mmc_part. | |
437 | */ | |
438 | if (ext_csd[EXT_CSD_PARTITION_SUPPORT] & | |
439 | EXT_CSD_PART_SUPPORT_PART_EN) { | |
440 | if (card->ext_csd.enhanced_area_en != 1) { | |
441 | hc_erase_grp_sz = | |
442 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; | |
443 | hc_wp_grp_sz = | |
444 | ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; | |
445 | ||
446 | card->ext_csd.enhanced_area_en = 1; | |
447 | } | |
448 | ||
449 | for (idx = 0; idx < MMC_NUM_GP_PARTITION; idx++) { | |
450 | if (!ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3] && | |
451 | !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] && | |
452 | !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2]) | |
453 | continue; | |
454 | part_size = | |
455 | (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2] | |
456 | << 16) + | |
457 | (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] | |
458 | << 8) + | |
459 | ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3]; | |
460 | part_size *= (size_t)(hc_erase_grp_sz * | |
461 | hc_wp_grp_sz); | |
462 | mmc_part_add(card, part_size << 19, | |
463 | EXT_CSD_PART_CONFIG_ACC_GP0 + idx, | |
add710ea JR |
464 | "gp%d", idx, false, |
465 | MMC_BLK_DATA_AREA_GP); | |
e0c368d5 NJ |
466 | } |
467 | } | |
dfe86cba AH |
468 | card->ext_csd.sec_trim_mult = |
469 | ext_csd[EXT_CSD_SEC_TRIM_MULT]; | |
470 | card->ext_csd.sec_erase_mult = | |
471 | ext_csd[EXT_CSD_SEC_ERASE_MULT]; | |
472 | card->ext_csd.sec_feature_support = | |
473 | ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; | |
474 | card->ext_csd.trim_timeout = 300 * | |
475 | ext_csd[EXT_CSD_TRIM_MULT]; | |
add710ea JR |
476 | |
477 | /* | |
478 | * Note that the call to mmc_part_add above defaults to read | |
479 | * only. If this default assumption is changed, the call must | |
480 | * take into account the value of boot_locked below. | |
481 | */ | |
482 | card->ext_csd.boot_ro_lock = ext_csd[EXT_CSD_BOOT_WP]; | |
483 | card->ext_csd.boot_ro_lockable = true; | |
60443712 FS |
484 | |
485 | /* Save power class values */ | |
486 | card->ext_csd.raw_pwr_cl_52_195 = | |
487 | ext_csd[EXT_CSD_PWR_CL_52_195]; | |
488 | card->ext_csd.raw_pwr_cl_26_195 = | |
489 | ext_csd[EXT_CSD_PWR_CL_26_195]; | |
490 | card->ext_csd.raw_pwr_cl_52_360 = | |
491 | ext_csd[EXT_CSD_PWR_CL_52_360]; | |
492 | card->ext_csd.raw_pwr_cl_26_360 = | |
493 | ext_csd[EXT_CSD_PWR_CL_26_360]; | |
494 | card->ext_csd.raw_pwr_cl_200_195 = | |
495 | ext_csd[EXT_CSD_PWR_CL_200_195]; | |
496 | card->ext_csd.raw_pwr_cl_200_360 = | |
497 | ext_csd[EXT_CSD_PWR_CL_200_360]; | |
498 | card->ext_csd.raw_pwr_cl_ddr_52_195 = | |
499 | ext_csd[EXT_CSD_PWR_CL_DDR_52_195]; | |
500 | card->ext_csd.raw_pwr_cl_ddr_52_360 = | |
501 | ext_csd[EXT_CSD_PWR_CL_DDR_52_360]; | |
b1ebe384 JL |
502 | } |
503 | ||
b2499518 | 504 | if (card->ext_csd.rev >= 5) { |
7c4f10ac RI |
505 | /* Adjust production date as per JEDEC JESD84-B451 */ |
506 | if (card->cid.year < 2010) | |
507 | card->cid.year += 16; | |
508 | ||
950d56ac JC |
509 | /* check whether the eMMC card supports BKOPS */ |
510 | if (ext_csd[EXT_CSD_BKOPS_SUPPORT] & 0x1) { | |
511 | card->ext_csd.bkops = 1; | |
512 | card->ext_csd.bkops_en = ext_csd[EXT_CSD_BKOPS_EN]; | |
513 | card->ext_csd.raw_bkops_status = | |
514 | ext_csd[EXT_CSD_BKOPS_STATUS]; | |
515 | if (!card->ext_csd.bkops_en) | |
516 | pr_info("%s: BKOPS_EN bit is not set\n", | |
517 | mmc_hostname(card->host)); | |
518 | } | |
519 | ||
eb0d8f13 JC |
520 | /* check whether the eMMC card supports HPI */ |
521 | if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x1) { | |
522 | card->ext_csd.hpi = 1; | |
523 | if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x2) | |
524 | card->ext_csd.hpi_cmd = MMC_STOP_TRANSMISSION; | |
525 | else | |
526 | card->ext_csd.hpi_cmd = MMC_SEND_STATUS; | |
527 | /* | |
528 | * Indicate the maximum timeout to close | |
529 | * a command interrupted by HPI | |
530 | */ | |
531 | card->ext_csd.out_of_int_time = | |
532 | ext_csd[EXT_CSD_OUT_OF_INTERRUPT_TIME] * 10; | |
533 | } | |
534 | ||
f4c5522b | 535 | card->ext_csd.rel_param = ext_csd[EXT_CSD_WR_REL_PARAM]; |
b2499518 | 536 | card->ext_csd.rst_n_function = ext_csd[EXT_CSD_RST_N_FUNCTION]; |
090d25fe LP |
537 | |
538 | /* | |
539 | * RPMB regions are defined in multiples of 128K. | |
540 | */ | |
541 | card->ext_csd.raw_rpmb_size_mult = ext_csd[EXT_CSD_RPMB_MULT]; | |
d0123cca | 542 | if (ext_csd[EXT_CSD_RPMB_MULT] && mmc_host_cmd23(card->host)) { |
090d25fe LP |
543 | mmc_part_add(card, ext_csd[EXT_CSD_RPMB_MULT] << 17, |
544 | EXT_CSD_PART_CONFIG_ACC_RPMB, | |
545 | "rpmb", 0, false, | |
546 | MMC_BLK_DATA_AREA_RPMB); | |
547 | } | |
b2499518 | 548 | } |
f4c5522b | 549 | |
5238acbe | 550 | card->ext_csd.raw_erased_mem_count = ext_csd[EXT_CSD_ERASED_MEM_CONT]; |
dfe86cba AH |
551 | if (ext_csd[EXT_CSD_ERASED_MEM_CONT]) |
552 | card->erased_byte = 0xFF; | |
553 | else | |
554 | card->erased_byte = 0x0; | |
555 | ||
336c716a | 556 | /* eMMC v4.5 or later */ |
bec8726a | 557 | if (card->ext_csd.rev >= 6) { |
336c716a SJ |
558 | card->ext_csd.feature_support |= MMC_DISCARD_FEATURE; |
559 | ||
b23cf0bd SJ |
560 | card->ext_csd.generic_cmd6_time = 10 * |
561 | ext_csd[EXT_CSD_GENERIC_CMD6_TIME]; | |
bec8726a G |
562 | card->ext_csd.power_off_longtime = 10 * |
563 | ext_csd[EXT_CSD_POWER_OFF_LONG_TIME]; | |
b23cf0bd | 564 | |
336c716a SJ |
565 | card->ext_csd.cache_size = |
566 | ext_csd[EXT_CSD_CACHE_SIZE + 0] << 0 | | |
567 | ext_csd[EXT_CSD_CACHE_SIZE + 1] << 8 | | |
568 | ext_csd[EXT_CSD_CACHE_SIZE + 2] << 16 | | |
569 | ext_csd[EXT_CSD_CACHE_SIZE + 3] << 24; | |
4265900e SD |
570 | |
571 | if (ext_csd[EXT_CSD_DATA_SECTOR_SIZE] == 1) | |
572 | card->ext_csd.data_sector_size = 4096; | |
573 | else | |
574 | card->ext_csd.data_sector_size = 512; | |
575 | ||
576 | if ((ext_csd[EXT_CSD_DATA_TAG_SUPPORT] & 1) && | |
577 | (ext_csd[EXT_CSD_TAG_UNIT_SIZE] <= 8)) { | |
578 | card->ext_csd.data_tag_unit_size = | |
579 | ((unsigned int) 1 << ext_csd[EXT_CSD_TAG_UNIT_SIZE]) * | |
580 | (card->ext_csd.data_sector_size); | |
581 | } else { | |
582 | card->ext_csd.data_tag_unit_size = 0; | |
583 | } | |
abd9ac14 SJ |
584 | |
585 | card->ext_csd.max_packed_writes = | |
586 | ext_csd[EXT_CSD_MAX_PACKED_WRITES]; | |
587 | card->ext_csd.max_packed_reads = | |
588 | ext_csd[EXT_CSD_MAX_PACKED_READS]; | |
a5075eb9 SD |
589 | } else { |
590 | card->ext_csd.data_sector_size = 512; | |
336c716a | 591 | } |
881d1c25 | 592 | |
7ea239d9 | 593 | out: |
08ee80cc PR |
594 | return err; |
595 | } | |
596 | ||
597 | static inline void mmc_free_ext_csd(u8 *ext_csd) | |
598 | { | |
7ea239d9 | 599 | kfree(ext_csd); |
08ee80cc PR |
600 | } |
601 | ||
7ea239d9 | 602 | |
f39b2dd9 | 603 | static int mmc_compare_ext_csds(struct mmc_card *card, unsigned bus_width) |
08ee80cc PR |
604 | { |
605 | u8 *bw_ext_csd; | |
606 | int err; | |
607 | ||
f39b2dd9 PR |
608 | if (bus_width == MMC_BUS_WIDTH_1) |
609 | return 0; | |
610 | ||
08ee80cc | 611 | err = mmc_get_ext_csd(card, &bw_ext_csd); |
08ee80cc | 612 | |
f39b2dd9 | 613 | if (err || bw_ext_csd == NULL) { |
f6f44590 | 614 | err = -EINVAL; |
08ee80cc PR |
615 | goto out; |
616 | } | |
617 | ||
08ee80cc | 618 | /* only compare read only fields */ |
dd13b4ed | 619 | err = !((card->ext_csd.raw_partition_support == |
08ee80cc | 620 | bw_ext_csd[EXT_CSD_PARTITION_SUPPORT]) && |
f39b2dd9 | 621 | (card->ext_csd.raw_erased_mem_count == |
08ee80cc | 622 | bw_ext_csd[EXT_CSD_ERASED_MEM_CONT]) && |
f39b2dd9 | 623 | (card->ext_csd.rev == |
08ee80cc | 624 | bw_ext_csd[EXT_CSD_REV]) && |
f39b2dd9 | 625 | (card->ext_csd.raw_ext_csd_structure == |
08ee80cc | 626 | bw_ext_csd[EXT_CSD_STRUCTURE]) && |
f39b2dd9 | 627 | (card->ext_csd.raw_card_type == |
08ee80cc | 628 | bw_ext_csd[EXT_CSD_CARD_TYPE]) && |
f39b2dd9 | 629 | (card->ext_csd.raw_s_a_timeout == |
08ee80cc | 630 | bw_ext_csd[EXT_CSD_S_A_TIMEOUT]) && |
f39b2dd9 | 631 | (card->ext_csd.raw_hc_erase_gap_size == |
08ee80cc | 632 | bw_ext_csd[EXT_CSD_HC_WP_GRP_SIZE]) && |
f39b2dd9 | 633 | (card->ext_csd.raw_erase_timeout_mult == |
08ee80cc | 634 | bw_ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]) && |
f39b2dd9 | 635 | (card->ext_csd.raw_hc_erase_grp_size == |
08ee80cc | 636 | bw_ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]) && |
f39b2dd9 | 637 | (card->ext_csd.raw_sec_trim_mult == |
08ee80cc | 638 | bw_ext_csd[EXT_CSD_SEC_TRIM_MULT]) && |
f39b2dd9 | 639 | (card->ext_csd.raw_sec_erase_mult == |
08ee80cc | 640 | bw_ext_csd[EXT_CSD_SEC_ERASE_MULT]) && |
f39b2dd9 | 641 | (card->ext_csd.raw_sec_feature_support == |
08ee80cc | 642 | bw_ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]) && |
f39b2dd9 | 643 | (card->ext_csd.raw_trim_mult == |
08ee80cc | 644 | bw_ext_csd[EXT_CSD_TRIM_MULT]) && |
f39b2dd9 PR |
645 | (card->ext_csd.raw_sectors[0] == |
646 | bw_ext_csd[EXT_CSD_SEC_CNT + 0]) && | |
647 | (card->ext_csd.raw_sectors[1] == | |
648 | bw_ext_csd[EXT_CSD_SEC_CNT + 1]) && | |
649 | (card->ext_csd.raw_sectors[2] == | |
650 | bw_ext_csd[EXT_CSD_SEC_CNT + 2]) && | |
651 | (card->ext_csd.raw_sectors[3] == | |
60443712 FS |
652 | bw_ext_csd[EXT_CSD_SEC_CNT + 3]) && |
653 | (card->ext_csd.raw_pwr_cl_52_195 == | |
654 | bw_ext_csd[EXT_CSD_PWR_CL_52_195]) && | |
655 | (card->ext_csd.raw_pwr_cl_26_195 == | |
656 | bw_ext_csd[EXT_CSD_PWR_CL_26_195]) && | |
657 | (card->ext_csd.raw_pwr_cl_52_360 == | |
658 | bw_ext_csd[EXT_CSD_PWR_CL_52_360]) && | |
659 | (card->ext_csd.raw_pwr_cl_26_360 == | |
660 | bw_ext_csd[EXT_CSD_PWR_CL_26_360]) && | |
661 | (card->ext_csd.raw_pwr_cl_200_195 == | |
662 | bw_ext_csd[EXT_CSD_PWR_CL_200_195]) && | |
663 | (card->ext_csd.raw_pwr_cl_200_360 == | |
664 | bw_ext_csd[EXT_CSD_PWR_CL_200_360]) && | |
665 | (card->ext_csd.raw_pwr_cl_ddr_52_195 == | |
666 | bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_195]) && | |
667 | (card->ext_csd.raw_pwr_cl_ddr_52_360 == | |
668 | bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_360])); | |
08ee80cc PR |
669 | if (err) |
670 | err = -EINVAL; | |
671 | ||
672 | out: | |
673 | mmc_free_ext_csd(bw_ext_csd); | |
7ea239d9 PO |
674 | return err; |
675 | } | |
676 | ||
51ec92e2 PO |
677 | MMC_DEV_ATTR(cid, "%08x%08x%08x%08x\n", card->raw_cid[0], card->raw_cid[1], |
678 | card->raw_cid[2], card->raw_cid[3]); | |
679 | MMC_DEV_ATTR(csd, "%08x%08x%08x%08x\n", card->raw_csd[0], card->raw_csd[1], | |
680 | card->raw_csd[2], card->raw_csd[3]); | |
681 | MMC_DEV_ATTR(date, "%02d/%04d\n", card->cid.month, card->cid.year); | |
dfe86cba AH |
682 | MMC_DEV_ATTR(erase_size, "%u\n", card->erase_size << 9); |
683 | MMC_DEV_ATTR(preferred_erase_size, "%u\n", card->pref_erase << 9); | |
51ec92e2 PO |
684 | MMC_DEV_ATTR(fwrev, "0x%x\n", card->cid.fwrev); |
685 | MMC_DEV_ATTR(hwrev, "0x%x\n", card->cid.hwrev); | |
686 | MMC_DEV_ATTR(manfid, "0x%06x\n", card->cid.manfid); | |
687 | MMC_DEV_ATTR(name, "%s\n", card->cid.prod_name); | |
688 | MMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid); | |
51e7e8b6 | 689 | MMC_DEV_ATTR(prv, "0x%x\n", card->cid.prv); |
51ec92e2 | 690 | MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial); |
709de99d CD |
691 | MMC_DEV_ATTR(enhanced_area_offset, "%llu\n", |
692 | card->ext_csd.enhanced_area_offset); | |
693 | MMC_DEV_ATTR(enhanced_area_size, "%u\n", card->ext_csd.enhanced_area_size); | |
188cc042 LP |
694 | MMC_DEV_ATTR(raw_rpmb_size_mult, "%#x\n", card->ext_csd.raw_rpmb_size_mult); |
695 | MMC_DEV_ATTR(rel_sectors, "%#x\n", card->ext_csd.rel_sectors); | |
51ec92e2 PO |
696 | |
697 | static struct attribute *mmc_std_attrs[] = { | |
698 | &dev_attr_cid.attr, | |
699 | &dev_attr_csd.attr, | |
700 | &dev_attr_date.attr, | |
dfe86cba AH |
701 | &dev_attr_erase_size.attr, |
702 | &dev_attr_preferred_erase_size.attr, | |
51ec92e2 PO |
703 | &dev_attr_fwrev.attr, |
704 | &dev_attr_hwrev.attr, | |
705 | &dev_attr_manfid.attr, | |
706 | &dev_attr_name.attr, | |
707 | &dev_attr_oemid.attr, | |
51e7e8b6 | 708 | &dev_attr_prv.attr, |
51ec92e2 | 709 | &dev_attr_serial.attr, |
709de99d CD |
710 | &dev_attr_enhanced_area_offset.attr, |
711 | &dev_attr_enhanced_area_size.attr, | |
188cc042 LP |
712 | &dev_attr_raw_rpmb_size_mult.attr, |
713 | &dev_attr_rel_sectors.attr, | |
51ec92e2 PO |
714 | NULL, |
715 | }; | |
d1e58212 | 716 | ATTRIBUTE_GROUPS(mmc_std); |
51ec92e2 PO |
717 | |
718 | static struct device_type mmc_type = { | |
d1e58212 | 719 | .groups = mmc_std_groups, |
51ec92e2 PO |
720 | }; |
721 | ||
b87d8dbf G |
722 | /* |
723 | * Select the PowerClass for the current bus width | |
724 | * If power class is defined for 4/8 bit bus in the | |
725 | * extended CSD register, select it by executing the | |
726 | * mmc_switch command. | |
727 | */ | |
2385049d SJ |
728 | static int __mmc_select_powerclass(struct mmc_card *card, |
729 | unsigned int bus_width) | |
b87d8dbf | 730 | { |
2385049d SJ |
731 | struct mmc_host *host = card->host; |
732 | struct mmc_ext_csd *ext_csd = &card->ext_csd; | |
60443712 | 733 | unsigned int pwrclass_val = 0; |
2385049d | 734 | int err = 0; |
b87d8dbf | 735 | |
b87d8dbf G |
736 | /* Power class selection is supported for versions >= 4.0 */ |
737 | if (card->csd.mmca_vsn < CSD_SPEC_VER_4) | |
738 | return 0; | |
739 | ||
740 | /* Power class values are defined only for 4/8 bit bus */ | |
741 | if (bus_width == EXT_CSD_BUS_WIDTH_1) | |
742 | return 0; | |
743 | ||
744 | switch (1 << host->ios.vdd) { | |
745 | case MMC_VDD_165_195: | |
2385049d SJ |
746 | if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) |
747 | pwrclass_val = ext_csd->raw_pwr_cl_26_195; | |
748 | else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR) | |
60443712 | 749 | pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? |
2385049d SJ |
750 | ext_csd->raw_pwr_cl_52_195 : |
751 | ext_csd->raw_pwr_cl_ddr_52_195; | |
752 | else if (host->ios.clock <= MMC_HS200_MAX_DTR) | |
753 | pwrclass_val = ext_csd->raw_pwr_cl_200_195; | |
b87d8dbf | 754 | break; |
93fc5a47 SJ |
755 | case MMC_VDD_27_28: |
756 | case MMC_VDD_28_29: | |
757 | case MMC_VDD_29_30: | |
758 | case MMC_VDD_30_31: | |
759 | case MMC_VDD_31_32: | |
b87d8dbf G |
760 | case MMC_VDD_32_33: |
761 | case MMC_VDD_33_34: | |
762 | case MMC_VDD_34_35: | |
763 | case MMC_VDD_35_36: | |
2385049d SJ |
764 | if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) |
765 | pwrclass_val = ext_csd->raw_pwr_cl_26_360; | |
766 | else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR) | |
60443712 | 767 | pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? |
2385049d SJ |
768 | ext_csd->raw_pwr_cl_52_360 : |
769 | ext_csd->raw_pwr_cl_ddr_52_360; | |
770 | else if (host->ios.clock <= MMC_HS200_MAX_DTR) | |
771 | pwrclass_val = ext_csd->raw_pwr_cl_200_360; | |
b87d8dbf G |
772 | break; |
773 | default: | |
774 | pr_warning("%s: Voltage range not supported " | |
775 | "for power class.\n", mmc_hostname(host)); | |
776 | return -EINVAL; | |
777 | } | |
778 | ||
b87d8dbf G |
779 | if (bus_width & (EXT_CSD_BUS_WIDTH_8 | EXT_CSD_DDR_BUS_WIDTH_8)) |
780 | pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_8BIT_MASK) >> | |
781 | EXT_CSD_PWR_CL_8BIT_SHIFT; | |
782 | else | |
783 | pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_4BIT_MASK) >> | |
784 | EXT_CSD_PWR_CL_4BIT_SHIFT; | |
785 | ||
786 | /* If the power class is different from the default value */ | |
787 | if (pwrclass_val > 0) { | |
788 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
789 | EXT_CSD_POWER_CLASS, | |
790 | pwrclass_val, | |
71fe3eb0 | 791 | card->ext_csd.generic_cmd6_time); |
b87d8dbf G |
792 | } |
793 | ||
794 | return err; | |
795 | } | |
796 | ||
2385049d SJ |
797 | static int mmc_select_powerclass(struct mmc_card *card) |
798 | { | |
799 | struct mmc_host *host = card->host; | |
800 | u32 bus_width, ext_csd_bits; | |
801 | int err, ddr; | |
802 | ||
803 | /* Power class selection is supported for versions >= 4.0 */ | |
804 | if (card->csd.mmca_vsn < CSD_SPEC_VER_4) | |
805 | return 0; | |
806 | ||
807 | bus_width = host->ios.bus_width; | |
808 | /* Power class values are defined only for 4/8 bit bus */ | |
809 | if (bus_width == MMC_BUS_WIDTH_1) | |
810 | return 0; | |
811 | ||
812 | ddr = card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52; | |
813 | if (ddr) | |
814 | ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? | |
815 | EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; | |
816 | else | |
817 | ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? | |
818 | EXT_CSD_BUS_WIDTH_8 : EXT_CSD_BUS_WIDTH_4; | |
819 | ||
820 | err = __mmc_select_powerclass(card, ext_csd_bits); | |
821 | if (err) | |
822 | pr_warn("%s: power class selection to bus width %d ddr %d failed\n", | |
823 | mmc_hostname(host), 1 << bus_width, ddr); | |
824 | ||
825 | return err; | |
826 | } | |
827 | ||
a4924c71 | 828 | /* |
577fb131 | 829 | * Set the bus speed for the selected speed mode. |
a4924c71 | 830 | */ |
577fb131 SJ |
831 | static void mmc_set_bus_speed(struct mmc_card *card) |
832 | { | |
833 | unsigned int max_dtr = (unsigned int)-1; | |
834 | ||
835 | if (mmc_card_hs200(card) && max_dtr > card->ext_csd.hs200_max_dtr) | |
836 | max_dtr = card->ext_csd.hs200_max_dtr; | |
837 | else if (mmc_card_hs(card) && max_dtr > card->ext_csd.hs_max_dtr) | |
838 | max_dtr = card->ext_csd.hs_max_dtr; | |
839 | else if (max_dtr > card->csd.max_dtr) | |
840 | max_dtr = card->csd.max_dtr; | |
841 | ||
842 | mmc_set_clock(card->host, max_dtr); | |
843 | } | |
844 | ||
845 | /* | |
846 | * Select the bus width amoung 4-bit and 8-bit(SDR). | |
847 | * If the bus width is changed successfully, return the selected width value. | |
848 | * Zero is returned instead of error value if the wide width is not supported. | |
849 | */ | |
850 | static int mmc_select_bus_width(struct mmc_card *card) | |
a4924c71 | 851 | { |
a4924c71 | 852 | static unsigned ext_csd_bits[] = { |
a4924c71 | 853 | EXT_CSD_BUS_WIDTH_8, |
577fb131 | 854 | EXT_CSD_BUS_WIDTH_4, |
a4924c71 G |
855 | }; |
856 | static unsigned bus_widths[] = { | |
a4924c71 | 857 | MMC_BUS_WIDTH_8, |
577fb131 | 858 | MMC_BUS_WIDTH_4, |
a4924c71 | 859 | }; |
577fb131 SJ |
860 | struct mmc_host *host = card->host; |
861 | unsigned idx, bus_width = 0; | |
862 | int err = 0; | |
a4924c71 | 863 | |
577fb131 SJ |
864 | if ((card->csd.mmca_vsn < CSD_SPEC_VER_4) && |
865 | !(host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) | |
866 | return 0; | |
a4924c71 | 867 | |
577fb131 | 868 | idx = (host->caps & MMC_CAP_8_BIT_DATA) ? 0 : 1; |
a4924c71 G |
869 | |
870 | /* | |
871 | * Unlike SD, MMC cards dont have a configuration register to notify | |
872 | * supported bus width. So bus test command should be run to identify | |
873 | * the supported bus width or compare the ext csd values of current | |
874 | * bus width and ext csd values of 1 bit mode read earlier. | |
875 | */ | |
577fb131 | 876 | for (; idx < ARRAY_SIZE(bus_widths); idx++) { |
a4924c71 G |
877 | /* |
878 | * Host is capable of 8bit transfer, then switch | |
879 | * the device to work in 8bit transfer mode. If the | |
880 | * mmc switch command returns error then switch to | |
881 | * 4bit transfer mode. On success set the corresponding | |
882 | * bus width on the host. | |
883 | */ | |
884 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
885 | EXT_CSD_BUS_WIDTH, | |
886 | ext_csd_bits[idx], | |
887 | card->ext_csd.generic_cmd6_time); | |
888 | if (err) | |
889 | continue; | |
890 | ||
577fb131 SJ |
891 | bus_width = bus_widths[idx]; |
892 | mmc_set_bus_width(host, bus_width); | |
a4924c71 | 893 | |
577fb131 SJ |
894 | /* |
895 | * If controller can't handle bus width test, | |
896 | * compare ext_csd previously read in 1 bit mode | |
897 | * against ext_csd at new bus width | |
898 | */ | |
a4924c71 | 899 | if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST)) |
577fb131 | 900 | err = mmc_compare_ext_csds(card, bus_width); |
a4924c71 | 901 | else |
577fb131 SJ |
902 | err = mmc_bus_test(card, bus_width); |
903 | ||
904 | if (!err) { | |
905 | err = bus_width; | |
a4924c71 | 906 | break; |
577fb131 SJ |
907 | } else { |
908 | pr_warn("%s: switch to bus width %d failed\n", | |
909 | mmc_hostname(host), ext_csd_bits[idx]); | |
910 | } | |
a4924c71 G |
911 | } |
912 | ||
577fb131 SJ |
913 | return err; |
914 | } | |
915 | ||
916 | /* | |
917 | * Switch to the high-speed mode | |
918 | */ | |
919 | static int mmc_select_hs(struct mmc_card *card) | |
920 | { | |
921 | int err; | |
922 | ||
923 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
924 | EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS, | |
925 | card->ext_csd.generic_cmd6_time, | |
926 | true, true, true); | |
a4924c71 | 927 | if (!err) |
577fb131 SJ |
928 | mmc_set_timing(card->host, MMC_TIMING_MMC_HS); |
929 | ||
930 | return err; | |
931 | } | |
932 | ||
933 | /* | |
934 | * Activate wide bus and DDR if supported. | |
935 | */ | |
936 | static int mmc_select_hs_ddr(struct mmc_card *card) | |
937 | { | |
938 | struct mmc_host *host = card->host; | |
939 | u32 bus_width, ext_csd_bits; | |
940 | int err = 0; | |
941 | ||
942 | if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52)) | |
943 | return 0; | |
944 | ||
945 | bus_width = host->ios.bus_width; | |
946 | if (bus_width == MMC_BUS_WIDTH_1) | |
947 | return 0; | |
948 | ||
949 | ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? | |
950 | EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; | |
951 | ||
952 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
953 | EXT_CSD_BUS_WIDTH, | |
954 | ext_csd_bits, | |
955 | card->ext_csd.generic_cmd6_time); | |
956 | if (err) { | |
957 | pr_warn("%s: switch to bus width %d ddr failed\n", | |
958 | mmc_hostname(host), 1 << bus_width); | |
959 | return err; | |
960 | } | |
961 | ||
962 | /* | |
963 | * eMMC cards can support 3.3V to 1.2V i/o (vccq) | |
964 | * signaling. | |
965 | * | |
966 | * EXT_CSD_CARD_TYPE_DDR_1_8V means 3.3V or 1.8V vccq. | |
967 | * | |
968 | * 1.8V vccq at 3.3V core voltage (vcc) is not required | |
969 | * in the JEDEC spec for DDR. | |
970 | * | |
971 | * Do not force change in vccq since we are obviously | |
972 | * working and no change to vccq is needed. | |
973 | * | |
974 | * WARNING: eMMC rules are NOT the same as SD DDR | |
975 | */ | |
976 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_2V) { | |
977 | err = __mmc_set_signal_voltage(host, | |
978 | MMC_SIGNAL_VOLTAGE_120); | |
979 | if (err) | |
980 | return err; | |
981 | } | |
982 | ||
983 | mmc_set_timing(host, MMC_TIMING_MMC_DDR52); | |
984 | ||
985 | return err; | |
986 | } | |
987 | ||
988 | /* | |
989 | * For device supporting HS200 mode, the following sequence | |
990 | * should be done before executing the tuning process. | |
991 | * 1. set the desired bus width(4-bit or 8-bit, 1-bit is not supported) | |
992 | * 2. switch to HS200 mode | |
993 | * 3. set the clock to > 52Mhz and <=200MHz | |
994 | */ | |
995 | static int mmc_select_hs200(struct mmc_card *card) | |
996 | { | |
997 | struct mmc_host *host = card->host; | |
998 | int err = -EINVAL; | |
999 | ||
1000 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_2V) | |
1001 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); | |
1002 | ||
1003 | if (err && card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_8V) | |
1004 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); | |
1005 | ||
1006 | /* If fails try again during next card power cycle */ | |
1007 | if (err) | |
1008 | goto err; | |
1009 | ||
1010 | /* | |
1011 | * Set the bus width(4 or 8) with host's support and | |
1012 | * switch to HS200 mode if bus width is set successfully. | |
1013 | */ | |
1014 | err = mmc_select_bus_width(card); | |
1015 | if (!IS_ERR_VALUE(err)) { | |
4509f847 | 1016 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
577fb131 SJ |
1017 | EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS200, |
1018 | card->ext_csd.generic_cmd6_time, | |
1019 | true, true, true); | |
1020 | if (!err) | |
1021 | mmc_set_timing(host, MMC_TIMING_MMC_HS200); | |
1022 | } | |
a4924c71 G |
1023 | err: |
1024 | return err; | |
1025 | } | |
1026 | ||
577fb131 SJ |
1027 | /* |
1028 | * Activate High Speed or HS200 mode if supported. | |
1029 | */ | |
1030 | static int mmc_select_timing(struct mmc_card *card) | |
1031 | { | |
1032 | int err = 0; | |
1033 | ||
1034 | if ((card->csd.mmca_vsn < CSD_SPEC_VER_4 && | |
1035 | card->ext_csd.hs_max_dtr == 0)) | |
1036 | goto bus_speed; | |
1037 | ||
1038 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200) | |
1039 | err = mmc_select_hs200(card); | |
1040 | else if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS) | |
1041 | err = mmc_select_hs(card); | |
1042 | ||
1043 | if (err && err != -EBADMSG) | |
1044 | return err; | |
1045 | ||
1046 | if (err) { | |
1047 | pr_warn("%s: switch to %s failed\n", | |
1048 | mmc_card_hs(card) ? "high-speed" : | |
1049 | (mmc_card_hs200(card) ? "hs200" : ""), | |
1050 | mmc_hostname(card->host)); | |
1051 | err = 0; | |
1052 | } | |
1053 | ||
1054 | bus_speed: | |
1055 | /* | |
1056 | * Set the bus speed to the selected bus timing. | |
1057 | * If timing is not selected, backward compatible is the default. | |
1058 | */ | |
1059 | mmc_set_bus_speed(card); | |
1060 | return err; | |
1061 | } | |
1062 | ||
1063 | /* | |
1064 | * Execute tuning sequence to seek the proper bus operating | |
1065 | * conditions for HS200, which sends CMD21 to the device. | |
1066 | */ | |
1067 | static int mmc_hs200_tuning(struct mmc_card *card) | |
1068 | { | |
1069 | struct mmc_host *host = card->host; | |
1070 | int err = 0; | |
1071 | ||
1072 | if (host->ops->execute_tuning) { | |
1073 | mmc_host_clk_hold(host); | |
1074 | err = host->ops->execute_tuning(host, | |
1075 | MMC_SEND_TUNING_BLOCK_HS200); | |
1076 | mmc_host_clk_release(host); | |
1077 | ||
1078 | if (err) | |
1079 | pr_warn("%s: tuning execution failed\n", | |
1080 | mmc_hostname(host)); | |
1081 | } | |
1082 | ||
1083 | return err; | |
1084 | } | |
1085 | ||
7ea239d9 | 1086 | /* |
6abaa0c9 PO |
1087 | * Handle the detection and initialisation of a card. |
1088 | * | |
8769392b | 1089 | * In the case of a resume, "oldcard" will contain the card |
6abaa0c9 | 1090 | * we're trying to reinitialise. |
7ea239d9 | 1091 | */ |
8c75deae | 1092 | static int mmc_init_card(struct mmc_host *host, u32 ocr, |
6abaa0c9 | 1093 | struct mmc_card *oldcard) |
7ea239d9 PO |
1094 | { |
1095 | struct mmc_card *card; | |
577fb131 | 1096 | int err; |
7ea239d9 | 1097 | u32 cid[4]; |
b676f039 | 1098 | u32 rocr; |
08ee80cc | 1099 | u8 *ext_csd = NULL; |
7ea239d9 PO |
1100 | |
1101 | BUG_ON(!host); | |
d84075c8 | 1102 | WARN_ON(!host->claimed); |
7ea239d9 | 1103 | |
44669034 SNX |
1104 | /* Set correct bus mode for MMC before attempting init */ |
1105 | if (!mmc_host_is_spi(host)) | |
1106 | mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); | |
1107 | ||
7ea239d9 PO |
1108 | /* |
1109 | * Since we're changing the OCR value, we seem to | |
1110 | * need to tell some cards to go back to the idle | |
1111 | * state. We wait 1ms to give cards time to | |
1112 | * respond. | |
c3805467 | 1113 | * mmc_go_idle is needed for eMMC that are asleep |
7ea239d9 PO |
1114 | */ |
1115 | mmc_go_idle(host); | |
1116 | ||
1117 | /* The extra bit indicates that we support high capacity */ | |
b676f039 | 1118 | err = mmc_send_op_cond(host, ocr | (1 << 30), &rocr); |
17b0429d | 1119 | if (err) |
6abaa0c9 | 1120 | goto err; |
7ea239d9 | 1121 | |
af517150 DB |
1122 | /* |
1123 | * For SPI, enable CRC as appropriate. | |
1124 | */ | |
1125 | if (mmc_host_is_spi(host)) { | |
1126 | err = mmc_spi_set_crc(host, use_spi_crc); | |
1127 | if (err) | |
1128 | goto err; | |
1129 | } | |
1130 | ||
7ea239d9 PO |
1131 | /* |
1132 | * Fetch CID from card. | |
1133 | */ | |
af517150 DB |
1134 | if (mmc_host_is_spi(host)) |
1135 | err = mmc_send_cid(host, cid); | |
1136 | else | |
1137 | err = mmc_all_send_cid(host, cid); | |
17b0429d | 1138 | if (err) |
7ea239d9 PO |
1139 | goto err; |
1140 | ||
6abaa0c9 | 1141 | if (oldcard) { |
adf66a0d PO |
1142 | if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) { |
1143 | err = -ENOENT; | |
6abaa0c9 | 1144 | goto err; |
adf66a0d | 1145 | } |
6abaa0c9 PO |
1146 | |
1147 | card = oldcard; | |
1148 | } else { | |
1149 | /* | |
1150 | * Allocate card structure. | |
1151 | */ | |
51ec92e2 | 1152 | card = mmc_alloc_card(host, &mmc_type); |
adf66a0d PO |
1153 | if (IS_ERR(card)) { |
1154 | err = PTR_ERR(card); | |
6abaa0c9 | 1155 | goto err; |
adf66a0d | 1156 | } |
7ea239d9 | 1157 | |
69041150 | 1158 | card->ocr = ocr; |
6abaa0c9 PO |
1159 | card->type = MMC_TYPE_MMC; |
1160 | card->rca = 1; | |
1161 | memcpy(card->raw_cid, cid, sizeof(card->raw_cid)); | |
1162 | } | |
7ea239d9 PO |
1163 | |
1164 | /* | |
af517150 | 1165 | * For native busses: set card RCA and quit open drain mode. |
7ea239d9 | 1166 | */ |
af517150 DB |
1167 | if (!mmc_host_is_spi(host)) { |
1168 | err = mmc_set_relative_addr(card); | |
1169 | if (err) | |
1170 | goto free_card; | |
7ea239d9 | 1171 | |
af517150 DB |
1172 | mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL); |
1173 | } | |
7ea239d9 | 1174 | |
6abaa0c9 PO |
1175 | if (!oldcard) { |
1176 | /* | |
1177 | * Fetch CSD from card. | |
1178 | */ | |
1179 | err = mmc_send_csd(card, card->raw_csd); | |
17b0429d | 1180 | if (err) |
6abaa0c9 | 1181 | goto free_card; |
7ea239d9 | 1182 | |
bd766312 | 1183 | err = mmc_decode_csd(card); |
adf66a0d | 1184 | if (err) |
bd766312 PO |
1185 | goto free_card; |
1186 | err = mmc_decode_cid(card); | |
adf66a0d | 1187 | if (err) |
bd766312 | 1188 | goto free_card; |
6abaa0c9 | 1189 | } |
7ea239d9 PO |
1190 | |
1191 | /* | |
89a73cf5 | 1192 | * Select card, as all following commands rely on that. |
7ea239d9 | 1193 | */ |
af517150 DB |
1194 | if (!mmc_host_is_spi(host)) { |
1195 | err = mmc_select_card(card); | |
1196 | if (err) | |
1197 | goto free_card; | |
1198 | } | |
7ea239d9 | 1199 | |
6abaa0c9 PO |
1200 | if (!oldcard) { |
1201 | /* | |
af517150 | 1202 | * Fetch and process extended CSD. |
6abaa0c9 | 1203 | */ |
08ee80cc PR |
1204 | |
1205 | err = mmc_get_ext_csd(card, &ext_csd); | |
1206 | if (err) | |
1207 | goto free_card; | |
1208 | err = mmc_read_ext_csd(card, ext_csd); | |
17b0429d | 1209 | if (err) |
6abaa0c9 | 1210 | goto free_card; |
b676f039 PR |
1211 | |
1212 | /* If doing byte addressing, check if required to do sector | |
1213 | * addressing. Handle the case of <2GB cards needing sector | |
1214 | * addressing. See section 8.1 JEDEC Standard JED84-A441; | |
1215 | * ocr register has bit 30 set for sector addressing. | |
1216 | */ | |
1217 | if (!(mmc_card_blockaddr(card)) && (rocr & (1<<30))) | |
1218 | mmc_card_set_blockaddr(card); | |
1219 | ||
dfe86cba AH |
1220 | /* Erase size depends on CSD and Extended CSD */ |
1221 | mmc_set_erase_size(card); | |
6abaa0c9 | 1222 | } |
7ea239d9 | 1223 | |
709de99d CD |
1224 | /* |
1225 | * If enhanced_area_en is TRUE, host needs to enable ERASE_GRP_DEF | |
25985edc | 1226 | * bit. This bit will be lost every time after a reset or power off. |
709de99d | 1227 | */ |
83bb24aa AH |
1228 | if (card->ext_csd.enhanced_area_en || |
1229 | (card->ext_csd.rev >= 3 && (host->caps2 & MMC_CAP2_HC_ERASE_SZ))) { | |
709de99d | 1230 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
b23cf0bd SJ |
1231 | EXT_CSD_ERASE_GROUP_DEF, 1, |
1232 | card->ext_csd.generic_cmd6_time); | |
709de99d CD |
1233 | |
1234 | if (err && err != -EBADMSG) | |
1235 | goto free_card; | |
1236 | ||
1237 | if (err) { | |
1238 | err = 0; | |
1239 | /* | |
1240 | * Just disable enhanced area off & sz | |
1241 | * will try to enable ERASE_GROUP_DEF | |
1242 | * during next time reinit | |
1243 | */ | |
1244 | card->ext_csd.enhanced_area_offset = -EINVAL; | |
1245 | card->ext_csd.enhanced_area_size = -EINVAL; | |
1246 | } else { | |
1247 | card->ext_csd.erase_group_def = 1; | |
1248 | /* | |
1249 | * enable ERASE_GRP_DEF successfully. | |
1250 | * This will affect the erase size, so | |
1251 | * here need to reset erase size | |
1252 | */ | |
1253 | mmc_set_erase_size(card); | |
1254 | } | |
1255 | } | |
1256 | ||
41e2a489 PR |
1257 | /* |
1258 | * Ensure eMMC user default partition is enabled | |
1259 | */ | |
371a689f AW |
1260 | if (card->ext_csd.part_config & EXT_CSD_PART_CONFIG_ACC_MASK) { |
1261 | card->ext_csd.part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK; | |
1262 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONFIG, | |
1263 | card->ext_csd.part_config, | |
1264 | card->ext_csd.part_time); | |
1265 | if (err && err != -EBADMSG) | |
1266 | goto free_card; | |
41e2a489 PR |
1267 | } |
1268 | ||
bec8726a | 1269 | /* |
43235679 | 1270 | * Enable power_off_notification byte in the ext_csd register |
bec8726a | 1271 | */ |
43235679 | 1272 | if (card->ext_csd.rev >= 6) { |
bec8726a G |
1273 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
1274 | EXT_CSD_POWER_OFF_NOTIFICATION, | |
1275 | EXT_CSD_POWER_ON, | |
1276 | card->ext_csd.generic_cmd6_time); | |
1277 | if (err && err != -EBADMSG) | |
1278 | goto free_card; | |
bec8726a | 1279 | |
96a85d54 G |
1280 | /* |
1281 | * The err can be -EBADMSG or 0, | |
1282 | * so check for success and update the flag | |
1283 | */ | |
1284 | if (!err) | |
e6c08586 | 1285 | card->ext_csd.power_off_notification = EXT_CSD_POWER_ON; |
96a85d54 | 1286 | } |
bec8726a | 1287 | |
89a73cf5 | 1288 | /* |
577fb131 | 1289 | * Select timing interface |
dfc13e84 | 1290 | */ |
577fb131 SJ |
1291 | err = mmc_select_timing(card); |
1292 | if (err) | |
1293 | goto free_card; | |
dfc13e84 | 1294 | |
a4924c71 | 1295 | if (mmc_card_hs200(card)) { |
577fb131 SJ |
1296 | err = mmc_hs200_tuning(card); |
1297 | if (err) | |
a4924c71 | 1298 | goto err; |
577fb131 SJ |
1299 | } else if (mmc_card_hs(card)) { |
1300 | /* Select the desired bus width optionally */ | |
1301 | err = mmc_select_bus_width(card); | |
1302 | if (!IS_ERR_VALUE(err)) { | |
1303 | err = mmc_select_hs_ddr(card); | |
1304 | if (err) | |
1305 | goto err; | |
ef0b27d4 | 1306 | } |
89a73cf5 PO |
1307 | } |
1308 | ||
2385049d SJ |
1309 | /* |
1310 | * Choose the power class with selected bus interface | |
1311 | */ | |
1312 | mmc_select_powerclass(card); | |
1313 | ||
52d0974e SJ |
1314 | /* |
1315 | * Enable HPI feature (if supported) | |
1316 | */ | |
1317 | if (card->ext_csd.hpi) { | |
1318 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1319 | EXT_CSD_HPI_MGMT, 1, | |
1320 | card->ext_csd.generic_cmd6_time); | |
1321 | if (err && err != -EBADMSG) | |
1322 | goto free_card; | |
1323 | if (err) { | |
1324 | pr_warning("%s: Enabling HPI failed\n", | |
1325 | mmc_hostname(card->host)); | |
1326 | err = 0; | |
1327 | } else | |
1328 | card->ext_csd.hpi_en = 1; | |
1329 | } | |
1330 | ||
881d1c25 SJ |
1331 | /* |
1332 | * If cache size is higher than 0, this indicates | |
1333 | * the existence of cache and it can be turned on. | |
1334 | */ | |
7536d3f8 | 1335 | if (card->ext_csd.cache_size > 0) { |
881d1c25 | 1336 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
8bc0678b SJ |
1337 | EXT_CSD_CACHE_CTRL, 1, |
1338 | card->ext_csd.generic_cmd6_time); | |
881d1c25 SJ |
1339 | if (err && err != -EBADMSG) |
1340 | goto free_card; | |
1341 | ||
1342 | /* | |
1343 | * Only if no error, cache is turned on successfully. | |
1344 | */ | |
8bc0678b SJ |
1345 | if (err) { |
1346 | pr_warning("%s: Cache is supported, " | |
1347 | "but failed to turn on (%d)\n", | |
1348 | mmc_hostname(card->host), err); | |
1349 | card->ext_csd.cache_ctrl = 0; | |
1350 | err = 0; | |
1351 | } else { | |
1352 | card->ext_csd.cache_ctrl = 1; | |
1353 | } | |
881d1c25 SJ |
1354 | } |
1355 | ||
abd9ac14 SJ |
1356 | /* |
1357 | * The mandatory minimum values are defined for packed command. | |
1358 | * read: 5, write: 3 | |
1359 | */ | |
1360 | if (card->ext_csd.max_packed_writes >= 3 && | |
1361 | card->ext_csd.max_packed_reads >= 5 && | |
1362 | host->caps2 & MMC_CAP2_PACKED_CMD) { | |
1363 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1364 | EXT_CSD_EXP_EVENTS_CTRL, | |
1365 | EXT_CSD_PACKED_EVENT_EN, | |
1366 | card->ext_csd.generic_cmd6_time); | |
1367 | if (err && err != -EBADMSG) | |
1368 | goto free_card; | |
1369 | if (err) { | |
1370 | pr_warn("%s: Enabling packed event failed\n", | |
1371 | mmc_hostname(card->host)); | |
1372 | card->ext_csd.packed_event_en = 0; | |
1373 | err = 0; | |
1374 | } else { | |
1375 | card->ext_csd.packed_event_en = 1; | |
1376 | } | |
1377 | } | |
1378 | ||
6abaa0c9 PO |
1379 | if (!oldcard) |
1380 | host->card = card; | |
1381 | ||
08ee80cc | 1382 | mmc_free_ext_csd(ext_csd); |
17b0429d | 1383 | return 0; |
6abaa0c9 PO |
1384 | |
1385 | free_card: | |
1386 | if (!oldcard) | |
1387 | mmc_remove_card(card); | |
1388 | err: | |
08ee80cc | 1389 | mmc_free_ext_csd(ext_csd); |
6abaa0c9 | 1390 | |
adf66a0d | 1391 | return err; |
6abaa0c9 PO |
1392 | } |
1393 | ||
07a68216 UH |
1394 | static int mmc_can_sleep(struct mmc_card *card) |
1395 | { | |
1396 | return (card && card->ext_csd.rev >= 3); | |
1397 | } | |
1398 | ||
1399 | static int mmc_sleep(struct mmc_host *host) | |
1400 | { | |
1401 | struct mmc_command cmd = {0}; | |
1402 | struct mmc_card *card = host->card; | |
cb962e04 | 1403 | unsigned int timeout_ms = DIV_ROUND_UP(card->ext_csd.sa_timeout, 10000); |
07a68216 UH |
1404 | int err; |
1405 | ||
07a68216 UH |
1406 | err = mmc_deselect_cards(host); |
1407 | if (err) | |
1408 | return err; | |
1409 | ||
1410 | cmd.opcode = MMC_SLEEP_AWAKE; | |
1411 | cmd.arg = card->rca << 16; | |
1412 | cmd.arg |= 1 << 15; | |
1413 | ||
cb962e04 UH |
1414 | /* |
1415 | * If the max_busy_timeout of the host is specified, validate it against | |
1416 | * the sleep cmd timeout. A failure means we need to prevent the host | |
1417 | * from doing hw busy detection, which is done by converting to a R1 | |
1418 | * response instead of a R1B. | |
1419 | */ | |
1420 | if (host->max_busy_timeout && (timeout_ms > host->max_busy_timeout)) { | |
1421 | cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; | |
1422 | } else { | |
1423 | cmd.flags = MMC_RSP_R1B | MMC_CMD_AC; | |
1424 | cmd.busy_timeout = timeout_ms; | |
1425 | } | |
1426 | ||
07a68216 UH |
1427 | err = mmc_wait_for_cmd(host, &cmd, 0); |
1428 | if (err) | |
1429 | return err; | |
1430 | ||
1431 | /* | |
1432 | * If the host does not wait while the card signals busy, then we will | |
1433 | * will have to wait the sleep/awake timeout. Note, we cannot use the | |
1434 | * SEND_STATUS command to poll the status because that command (and most | |
1435 | * others) is invalid while the card sleeps. | |
1436 | */ | |
cb962e04 UH |
1437 | if (!cmd.busy_timeout || !(host->caps & MMC_CAP_WAIT_WHILE_BUSY)) |
1438 | mmc_delay(timeout_ms); | |
07a68216 UH |
1439 | |
1440 | return err; | |
1441 | } | |
1442 | ||
e6c08586 UH |
1443 | static int mmc_can_poweroff_notify(const struct mmc_card *card) |
1444 | { | |
1445 | return card && | |
1446 | mmc_card_mmc(card) && | |
1447 | (card->ext_csd.power_off_notification == EXT_CSD_POWER_ON); | |
1448 | } | |
1449 | ||
1450 | static int mmc_poweroff_notify(struct mmc_card *card, unsigned int notify_type) | |
1451 | { | |
1452 | unsigned int timeout = card->ext_csd.generic_cmd6_time; | |
1453 | int err; | |
1454 | ||
1455 | /* Use EXT_CSD_POWER_OFF_SHORT as default notification type. */ | |
1456 | if (notify_type == EXT_CSD_POWER_OFF_LONG) | |
1457 | timeout = card->ext_csd.power_off_longtime; | |
1458 | ||
878e200b UH |
1459 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
1460 | EXT_CSD_POWER_OFF_NOTIFICATION, | |
4509f847 | 1461 | notify_type, timeout, true, false, false); |
e6c08586 UH |
1462 | if (err) |
1463 | pr_err("%s: Power Off Notification timed out, %u\n", | |
1464 | mmc_hostname(card->host), timeout); | |
1465 | ||
1466 | /* Disable the power off notification after the switch operation. */ | |
1467 | card->ext_csd.power_off_notification = EXT_CSD_NO_POWER_NOTIFICATION; | |
1468 | ||
1469 | return err; | |
1470 | } | |
1471 | ||
6abaa0c9 PO |
1472 | /* |
1473 | * Host is being removed. Free up the current card. | |
1474 | */ | |
1475 | static void mmc_remove(struct mmc_host *host) | |
1476 | { | |
1477 | BUG_ON(!host); | |
1478 | BUG_ON(!host->card); | |
1479 | ||
1480 | mmc_remove_card(host->card); | |
1481 | host->card = NULL; | |
1482 | } | |
1483 | ||
d3049504 AH |
1484 | /* |
1485 | * Card detection - card is alive. | |
1486 | */ | |
1487 | static int mmc_alive(struct mmc_host *host) | |
1488 | { | |
1489 | return mmc_send_status(host->card, NULL); | |
1490 | } | |
1491 | ||
6abaa0c9 PO |
1492 | /* |
1493 | * Card detection callback from host. | |
1494 | */ | |
1495 | static void mmc_detect(struct mmc_host *host) | |
1496 | { | |
1497 | int err; | |
1498 | ||
1499 | BUG_ON(!host); | |
1500 | BUG_ON(!host->card); | |
1501 | ||
e94cfef6 | 1502 | mmc_get_card(host->card); |
6abaa0c9 PO |
1503 | |
1504 | /* | |
1505 | * Just check if our card has been removed. | |
1506 | */ | |
d3049504 | 1507 | err = _mmc_detect_card_removed(host); |
6abaa0c9 | 1508 | |
e94cfef6 | 1509 | mmc_put_card(host->card); |
6abaa0c9 | 1510 | |
17b0429d | 1511 | if (err) { |
4101c16a | 1512 | mmc_remove(host); |
6abaa0c9 PO |
1513 | |
1514 | mmc_claim_host(host); | |
1515 | mmc_detach_bus(host); | |
7f7e4129 | 1516 | mmc_power_off(host); |
6abaa0c9 PO |
1517 | mmc_release_host(host); |
1518 | } | |
1519 | } | |
1520 | ||
03d071fc | 1521 | static int _mmc_suspend(struct mmc_host *host, bool is_suspend) |
6abaa0c9 | 1522 | { |
c3805467 | 1523 | int err = 0; |
03d071fc UH |
1524 | unsigned int notify_type = is_suspend ? EXT_CSD_POWER_OFF_SHORT : |
1525 | EXT_CSD_POWER_OFF_LONG; | |
c3805467 | 1526 | |
6abaa0c9 PO |
1527 | BUG_ON(!host); |
1528 | BUG_ON(!host->card); | |
7ea239d9 | 1529 | |
6abaa0c9 | 1530 | mmc_claim_host(host); |
881d926d | 1531 | |
9ec775f7 UH |
1532 | if (mmc_card_suspended(host->card)) |
1533 | goto out; | |
1534 | ||
39b9431b UH |
1535 | if (mmc_card_doing_bkops(host->card)) { |
1536 | err = mmc_stop_bkops(host->card); | |
1537 | if (err) | |
1538 | goto out; | |
1539 | } | |
1540 | ||
10e5d965 | 1541 | err = mmc_flush_cache(host->card); |
881d926d ME |
1542 | if (err) |
1543 | goto out; | |
1544 | ||
43235679 | 1545 | if (mmc_can_poweroff_notify(host->card) && |
53275c21 | 1546 | ((host->caps2 & MMC_CAP2_FULL_PWR_CYCLE) || !is_suspend)) |
03d071fc | 1547 | err = mmc_poweroff_notify(host->card, notify_type); |
07a68216 UH |
1548 | else if (mmc_can_sleep(host->card)) |
1549 | err = mmc_sleep(host); | |
e6c08586 | 1550 | else if (!mmc_host_is_spi(host)) |
85e727ed | 1551 | err = mmc_deselect_cards(host); |
95cdfb72 | 1552 | |
9ec775f7 | 1553 | if (!err) { |
74590263 | 1554 | mmc_power_off(host); |
9ec775f7 UH |
1555 | mmc_card_set_suspended(host->card); |
1556 | } | |
881d926d ME |
1557 | out: |
1558 | mmc_release_host(host); | |
c3805467 | 1559 | return err; |
6abaa0c9 | 1560 | } |
7ea239d9 | 1561 | |
03d071fc | 1562 | /* |
0cb403a2 | 1563 | * Suspend callback |
03d071fc UH |
1564 | */ |
1565 | static int mmc_suspend(struct mmc_host *host) | |
1566 | { | |
0cb403a2 UH |
1567 | int err; |
1568 | ||
1569 | err = _mmc_suspend(host, true); | |
1570 | if (!err) { | |
1571 | pm_runtime_disable(&host->card->dev); | |
1572 | pm_runtime_set_suspended(&host->card->dev); | |
1573 | } | |
1574 | ||
1575 | return err; | |
03d071fc UH |
1576 | } |
1577 | ||
6abaa0c9 | 1578 | /* |
6abaa0c9 PO |
1579 | * This function tries to determine if the same card is still present |
1580 | * and, if so, restore all state to it. | |
1581 | */ | |
0cb403a2 | 1582 | static int _mmc_resume(struct mmc_host *host) |
6abaa0c9 | 1583 | { |
9ec775f7 | 1584 | int err = 0; |
6abaa0c9 PO |
1585 | |
1586 | BUG_ON(!host); | |
1587 | BUG_ON(!host->card); | |
1588 | ||
1589 | mmc_claim_host(host); | |
9ec775f7 UH |
1590 | |
1591 | if (!mmc_card_suspended(host->card)) | |
1592 | goto out; | |
1593 | ||
69041150 | 1594 | mmc_power_up(host, host->card->ocr); |
69041150 | 1595 | err = mmc_init_card(host, host->card->ocr, host->card); |
9ec775f7 | 1596 | mmc_card_clr_suspended(host->card); |
2986d0bf | 1597 | |
9ec775f7 UH |
1598 | out: |
1599 | mmc_release_host(host); | |
95cdfb72 | 1600 | return err; |
6abaa0c9 PO |
1601 | } |
1602 | ||
9ec775f7 UH |
1603 | /* |
1604 | * Shutdown callback | |
1605 | */ | |
1606 | static int mmc_shutdown(struct mmc_host *host) | |
1607 | { | |
1608 | int err = 0; | |
1609 | ||
1610 | /* | |
1611 | * In a specific case for poweroff notify, we need to resume the card | |
1612 | * before we can shutdown it properly. | |
1613 | */ | |
1614 | if (mmc_can_poweroff_notify(host->card) && | |
1615 | !(host->caps2 & MMC_CAP2_FULL_PWR_CYCLE)) | |
0cb403a2 | 1616 | err = _mmc_resume(host); |
9ec775f7 UH |
1617 | |
1618 | if (!err) | |
1619 | err = _mmc_suspend(host, false); | |
1620 | ||
1621 | return err; | |
1622 | } | |
c4d770d7 | 1623 | |
0cb403a2 UH |
1624 | /* |
1625 | * Callback for resume. | |
1626 | */ | |
1627 | static int mmc_resume(struct mmc_host *host) | |
1628 | { | |
4d223782 | 1629 | int err = 0; |
0cb403a2 | 1630 | |
4d223782 UH |
1631 | if (!(host->caps & MMC_CAP_RUNTIME_RESUME)) { |
1632 | err = _mmc_resume(host); | |
1633 | pm_runtime_set_active(&host->card->dev); | |
1634 | pm_runtime_mark_last_busy(&host->card->dev); | |
1635 | } | |
0cb403a2 UH |
1636 | pm_runtime_enable(&host->card->dev); |
1637 | ||
1638 | return err; | |
1639 | } | |
1640 | ||
c4d770d7 UH |
1641 | /* |
1642 | * Callback for runtime_suspend. | |
1643 | */ | |
1644 | static int mmc_runtime_suspend(struct mmc_host *host) | |
1645 | { | |
1646 | int err; | |
1647 | ||
1648 | if (!(host->caps & MMC_CAP_AGGRESSIVE_PM)) | |
1649 | return 0; | |
1650 | ||
0cb403a2 | 1651 | err = _mmc_suspend(host, true); |
0cc81a8c | 1652 | if (err) |
c4d770d7 UH |
1653 | pr_err("%s: error %d doing aggessive suspend\n", |
1654 | mmc_hostname(host), err); | |
c4d770d7 | 1655 | |
c4d770d7 UH |
1656 | return err; |
1657 | } | |
1658 | ||
1659 | /* | |
1660 | * Callback for runtime_resume. | |
1661 | */ | |
1662 | static int mmc_runtime_resume(struct mmc_host *host) | |
1663 | { | |
1664 | int err; | |
1665 | ||
4d223782 | 1666 | if (!(host->caps & (MMC_CAP_AGGRESSIVE_PM | MMC_CAP_RUNTIME_RESUME))) |
c4d770d7 UH |
1667 | return 0; |
1668 | ||
0cb403a2 | 1669 | err = _mmc_resume(host); |
c4d770d7 UH |
1670 | if (err) |
1671 | pr_err("%s: error %d doing aggessive resume\n", | |
1672 | mmc_hostname(host), err); | |
1673 | ||
c4d770d7 UH |
1674 | return 0; |
1675 | } | |
1676 | ||
12ae637f | 1677 | static int mmc_power_restore(struct mmc_host *host) |
eae1aeee | 1678 | { |
12ae637f OBC |
1679 | int ret; |
1680 | ||
eae1aeee | 1681 | mmc_claim_host(host); |
69041150 | 1682 | ret = mmc_init_card(host, host->card->ocr, host->card); |
eae1aeee | 1683 | mmc_release_host(host); |
12ae637f OBC |
1684 | |
1685 | return ret; | |
eae1aeee AH |
1686 | } |
1687 | ||
6abaa0c9 PO |
1688 | static const struct mmc_bus_ops mmc_ops = { |
1689 | .remove = mmc_remove, | |
1690 | .detect = mmc_detect, | |
1691 | .suspend = mmc_suspend, | |
1692 | .resume = mmc_resume, | |
c4d770d7 UH |
1693 | .runtime_suspend = mmc_runtime_suspend, |
1694 | .runtime_resume = mmc_runtime_resume, | |
eae1aeee | 1695 | .power_restore = mmc_power_restore, |
d3049504 | 1696 | .alive = mmc_alive, |
486fdbbc | 1697 | .shutdown = mmc_shutdown, |
6abaa0c9 PO |
1698 | }; |
1699 | ||
1700 | /* | |
1701 | * Starting point for MMC card init. | |
1702 | */ | |
807e8e40 | 1703 | int mmc_attach_mmc(struct mmc_host *host) |
6abaa0c9 PO |
1704 | { |
1705 | int err; | |
69041150 | 1706 | u32 ocr, rocr; |
6abaa0c9 PO |
1707 | |
1708 | BUG_ON(!host); | |
d84075c8 | 1709 | WARN_ON(!host->claimed); |
6abaa0c9 | 1710 | |
44669034 SNX |
1711 | /* Set correct bus mode for MMC before attempting attach */ |
1712 | if (!mmc_host_is_spi(host)) | |
1713 | mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); | |
1714 | ||
807e8e40 AR |
1715 | err = mmc_send_op_cond(host, 0, &ocr); |
1716 | if (err) | |
1717 | return err; | |
1718 | ||
2501c917 | 1719 | mmc_attach_bus(host, &mmc_ops); |
8f230f45 TI |
1720 | if (host->ocr_avail_mmc) |
1721 | host->ocr_avail = host->ocr_avail_mmc; | |
6abaa0c9 | 1722 | |
af517150 DB |
1723 | /* |
1724 | * We need to get OCR a different way for SPI. | |
1725 | */ | |
1726 | if (mmc_host_is_spi(host)) { | |
1727 | err = mmc_spi_read_ocr(host, 1, &ocr); | |
1728 | if (err) | |
1729 | goto err; | |
1730 | } | |
1731 | ||
69041150 | 1732 | rocr = mmc_select_voltage(host, ocr); |
6abaa0c9 PO |
1733 | |
1734 | /* | |
1735 | * Can we support the voltage of the card? | |
1736 | */ | |
69041150 | 1737 | if (!rocr) { |
109b5bed | 1738 | err = -EINVAL; |
6abaa0c9 | 1739 | goto err; |
109b5bed | 1740 | } |
6abaa0c9 PO |
1741 | |
1742 | /* | |
1743 | * Detect and init the card. | |
1744 | */ | |
69041150 | 1745 | err = mmc_init_card(host, rocr, NULL); |
17b0429d | 1746 | if (err) |
6abaa0c9 PO |
1747 | goto err; |
1748 | ||
1749 | mmc_release_host(host); | |
4101c16a | 1750 | err = mmc_add_card(host->card); |
807e8e40 | 1751 | mmc_claim_host(host); |
7ea239d9 | 1752 | if (err) |
2986d0bf | 1753 | goto remove_card; |
7ea239d9 PO |
1754 | |
1755 | return 0; | |
1756 | ||
2986d0bf | 1757 | remove_card: |
807e8e40 | 1758 | mmc_release_host(host); |
6abaa0c9 | 1759 | mmc_remove_card(host->card); |
2986d0bf | 1760 | mmc_claim_host(host); |
807e8e40 | 1761 | host->card = NULL; |
7ea239d9 PO |
1762 | err: |
1763 | mmc_detach_bus(host); | |
7ea239d9 | 1764 | |
a3c76eb9 | 1765 | pr_err("%s: error %d whilst initialising MMC card\n", |
109b5bed PO |
1766 | mmc_hostname(host), err); |
1767 | ||
adf66a0d | 1768 | return err; |
7ea239d9 | 1769 | } |