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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> | |
5a0e3ad6 | 14 | #include <linux/slab.h> |
0205a904 | 15 | #include <linux/stat.h> |
7ea239d9 PO |
16 | |
17 | #include <linux/mmc/host.h> | |
18 | #include <linux/mmc/card.h> | |
19 | #include <linux/mmc/mmc.h> | |
20 | ||
21 | #include "core.h" | |
4101c16a | 22 | #include "bus.h" |
7ea239d9 | 23 | #include "mmc_ops.h" |
4c4cb171 | 24 | #include "sd_ops.h" |
7ea239d9 PO |
25 | |
26 | static const unsigned int tran_exp[] = { | |
27 | 10000, 100000, 1000000, 10000000, | |
28 | 0, 0, 0, 0 | |
29 | }; | |
30 | ||
31 | static const unsigned char tran_mant[] = { | |
32 | 0, 10, 12, 13, 15, 20, 25, 30, | |
33 | 35, 40, 45, 50, 55, 60, 70, 80, | |
34 | }; | |
35 | ||
36 | static const unsigned int tacc_exp[] = { | |
37 | 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, | |
38 | }; | |
39 | ||
40 | static const unsigned int tacc_mant[] = { | |
41 | 0, 10, 12, 13, 15, 20, 25, 30, | |
42 | 35, 40, 45, 50, 55, 60, 70, 80, | |
43 | }; | |
44 | ||
45 | #define UNSTUFF_BITS(resp,start,size) \ | |
46 | ({ \ | |
47 | const int __size = size; \ | |
48 | const u32 __mask = (__size < 32 ? 1 << __size : 0) - 1; \ | |
49 | const int __off = 3 - ((start) / 32); \ | |
50 | const int __shft = (start) & 31; \ | |
51 | u32 __res; \ | |
52 | \ | |
53 | __res = resp[__off] >> __shft; \ | |
54 | if (__size + __shft > 32) \ | |
55 | __res |= resp[__off-1] << ((32 - __shft) % 32); \ | |
56 | __res & __mask; \ | |
57 | }) | |
58 | ||
59 | /* | |
60 | * Given the decoded CSD structure, decode the raw CID to our CID structure. | |
61 | */ | |
bd766312 | 62 | static int mmc_decode_cid(struct mmc_card *card) |
7ea239d9 PO |
63 | { |
64 | u32 *resp = card->raw_cid; | |
65 | ||
66 | /* | |
67 | * The selection of the format here is based upon published | |
68 | * specs from sandisk and from what people have reported. | |
69 | */ | |
70 | switch (card->csd.mmca_vsn) { | |
71 | case 0: /* MMC v1.0 - v1.2 */ | |
72 | case 1: /* MMC v1.4 */ | |
73 | card->cid.manfid = UNSTUFF_BITS(resp, 104, 24); | |
74 | card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); | |
75 | card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); | |
76 | card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); | |
77 | card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); | |
78 | card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); | |
79 | card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); | |
80 | card->cid.prod_name[6] = UNSTUFF_BITS(resp, 48, 8); | |
81 | card->cid.hwrev = UNSTUFF_BITS(resp, 44, 4); | |
82 | card->cid.fwrev = UNSTUFF_BITS(resp, 40, 4); | |
83 | card->cid.serial = UNSTUFF_BITS(resp, 16, 24); | |
84 | card->cid.month = UNSTUFF_BITS(resp, 12, 4); | |
85 | card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; | |
86 | break; | |
87 | ||
88 | case 2: /* MMC v2.0 - v2.2 */ | |
89 | case 3: /* MMC v3.1 - v3.3 */ | |
90 | case 4: /* MMC v4 */ | |
91 | card->cid.manfid = UNSTUFF_BITS(resp, 120, 8); | |
92 | card->cid.oemid = UNSTUFF_BITS(resp, 104, 16); | |
93 | card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); | |
94 | card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); | |
95 | card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); | |
96 | card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); | |
97 | card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); | |
98 | card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); | |
99 | card->cid.serial = UNSTUFF_BITS(resp, 16, 32); | |
100 | card->cid.month = UNSTUFF_BITS(resp, 12, 4); | |
101 | card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; | |
102 | break; | |
103 | ||
104 | default: | |
a3c76eb9 | 105 | pr_err("%s: card has unknown MMCA version %d\n", |
7ea239d9 | 106 | mmc_hostname(card->host), card->csd.mmca_vsn); |
bd766312 | 107 | return -EINVAL; |
7ea239d9 | 108 | } |
bd766312 PO |
109 | |
110 | return 0; | |
7ea239d9 PO |
111 | } |
112 | ||
dfe86cba AH |
113 | static void mmc_set_erase_size(struct mmc_card *card) |
114 | { | |
115 | if (card->ext_csd.erase_group_def & 1) | |
116 | card->erase_size = card->ext_csd.hc_erase_size; | |
117 | else | |
118 | card->erase_size = card->csd.erase_size; | |
119 | ||
120 | mmc_init_erase(card); | |
121 | } | |
122 | ||
7ea239d9 PO |
123 | /* |
124 | * Given a 128-bit response, decode to our card CSD structure. | |
125 | */ | |
bd766312 | 126 | static int mmc_decode_csd(struct mmc_card *card) |
7ea239d9 PO |
127 | { |
128 | struct mmc_csd *csd = &card->csd; | |
dfe86cba | 129 | unsigned int e, m, a, b; |
7ea239d9 PO |
130 | u32 *resp = card->raw_csd; |
131 | ||
132 | /* | |
133 | * We only understand CSD structure v1.1 and v1.2. | |
134 | * v1.2 has extra information in bits 15, 11 and 10. | |
6da24b78 | 135 | * We also support eMMC v4.4 & v4.41. |
7ea239d9 | 136 | */ |
6da24b78 KP |
137 | csd->structure = UNSTUFF_BITS(resp, 126, 2); |
138 | if (csd->structure == 0) { | |
a3c76eb9 | 139 | pr_err("%s: unrecognised CSD structure version %d\n", |
6da24b78 | 140 | mmc_hostname(card->host), csd->structure); |
bd766312 | 141 | return -EINVAL; |
7ea239d9 PO |
142 | } |
143 | ||
144 | csd->mmca_vsn = UNSTUFF_BITS(resp, 122, 4); | |
145 | m = UNSTUFF_BITS(resp, 115, 4); | |
146 | e = UNSTUFF_BITS(resp, 112, 3); | |
147 | csd->tacc_ns = (tacc_exp[e] * tacc_mant[m] + 9) / 10; | |
148 | csd->tacc_clks = UNSTUFF_BITS(resp, 104, 8) * 100; | |
149 | ||
150 | m = UNSTUFF_BITS(resp, 99, 4); | |
151 | e = UNSTUFF_BITS(resp, 96, 3); | |
152 | csd->max_dtr = tran_exp[e] * tran_mant[m]; | |
153 | csd->cmdclass = UNSTUFF_BITS(resp, 84, 12); | |
154 | ||
155 | e = UNSTUFF_BITS(resp, 47, 3); | |
156 | m = UNSTUFF_BITS(resp, 62, 12); | |
157 | csd->capacity = (1 + m) << (e + 2); | |
158 | ||
159 | csd->read_blkbits = UNSTUFF_BITS(resp, 80, 4); | |
160 | csd->read_partial = UNSTUFF_BITS(resp, 79, 1); | |
161 | csd->write_misalign = UNSTUFF_BITS(resp, 78, 1); | |
162 | csd->read_misalign = UNSTUFF_BITS(resp, 77, 1); | |
163 | csd->r2w_factor = UNSTUFF_BITS(resp, 26, 3); | |
164 | csd->write_blkbits = UNSTUFF_BITS(resp, 22, 4); | |
165 | csd->write_partial = UNSTUFF_BITS(resp, 21, 1); | |
bd766312 | 166 | |
dfe86cba AH |
167 | if (csd->write_blkbits >= 9) { |
168 | a = UNSTUFF_BITS(resp, 42, 5); | |
169 | b = UNSTUFF_BITS(resp, 37, 5); | |
170 | csd->erase_size = (a + 1) * (b + 1); | |
171 | csd->erase_size <<= csd->write_blkbits - 9; | |
172 | } | |
173 | ||
bd766312 | 174 | return 0; |
7ea239d9 PO |
175 | } |
176 | ||
177 | /* | |
08ee80cc | 178 | * Read extended CSD. |
7ea239d9 | 179 | */ |
08ee80cc | 180 | static int mmc_get_ext_csd(struct mmc_card *card, u8 **new_ext_csd) |
7ea239d9 PO |
181 | { |
182 | int err; | |
183 | u8 *ext_csd; | |
184 | ||
185 | BUG_ON(!card); | |
08ee80cc PR |
186 | BUG_ON(!new_ext_csd); |
187 | ||
188 | *new_ext_csd = NULL; | |
7ea239d9 | 189 | |
7ea239d9 | 190 | if (card->csd.mmca_vsn < CSD_SPEC_VER_4) |
17b0429d | 191 | return 0; |
7ea239d9 PO |
192 | |
193 | /* | |
194 | * As the ext_csd is so large and mostly unused, we don't store the | |
195 | * raw block in mmc_card. | |
196 | */ | |
197 | ext_csd = kmalloc(512, GFP_KERNEL); | |
198 | if (!ext_csd) { | |
a3c76eb9 | 199 | pr_err("%s: could not allocate a buffer to " |
adf66a0d | 200 | "receive the ext_csd.\n", mmc_hostname(card->host)); |
17b0429d | 201 | return -ENOMEM; |
7ea239d9 PO |
202 | } |
203 | ||
204 | err = mmc_send_ext_csd(card, ext_csd); | |
17b0429d | 205 | if (err) { |
08ee80cc PR |
206 | kfree(ext_csd); |
207 | *new_ext_csd = NULL; | |
208 | ||
d08ebedd WM |
209 | /* If the host or the card can't do the switch, |
210 | * fail more gracefully. */ | |
211 | if ((err != -EINVAL) | |
212 | && (err != -ENOSYS) | |
213 | && (err != -EFAULT)) | |
08ee80cc | 214 | return err; |
adf66a0d | 215 | |
7ea239d9 PO |
216 | /* |
217 | * High capacity cards should have this "magic" size | |
218 | * stored in their CSD. | |
219 | */ | |
220 | if (card->csd.capacity == (4096 * 512)) { | |
a3c76eb9 | 221 | pr_err("%s: unable to read EXT_CSD " |
7ea239d9 PO |
222 | "on a possible high capacity card. " |
223 | "Card will be ignored.\n", | |
224 | mmc_hostname(card->host)); | |
225 | } else { | |
a3c76eb9 | 226 | pr_warning("%s: unable to read " |
7ea239d9 PO |
227 | "EXT_CSD, performance might " |
228 | "suffer.\n", | |
229 | mmc_hostname(card->host)); | |
17b0429d | 230 | err = 0; |
7ea239d9 | 231 | } |
08ee80cc PR |
232 | } else |
233 | *new_ext_csd = ext_csd; | |
adf66a0d | 234 | |
08ee80cc PR |
235 | return err; |
236 | } | |
237 | ||
238 | /* | |
239 | * Decode extended CSD. | |
240 | */ | |
241 | static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd) | |
242 | { | |
e0c368d5 NJ |
243 | int err = 0, idx; |
244 | unsigned int part_size; | |
245 | u8 hc_erase_grp_sz = 0, hc_wp_grp_sz = 0; | |
08ee80cc PR |
246 | |
247 | BUG_ON(!card); | |
248 | ||
249 | if (!ext_csd) | |
250 | return 0; | |
7ea239d9 | 251 | |
6da24b78 | 252 | /* Version is coded in the CSD_STRUCTURE byte in the EXT_CSD register */ |
f39b2dd9 | 253 | card->ext_csd.raw_ext_csd_structure = ext_csd[EXT_CSD_STRUCTURE]; |
6da24b78 | 254 | if (card->csd.structure == 3) { |
f39b2dd9 | 255 | if (card->ext_csd.raw_ext_csd_structure > 2) { |
a3c76eb9 | 256 | pr_err("%s: unrecognised EXT_CSD structure " |
6da24b78 | 257 | "version %d\n", mmc_hostname(card->host), |
f39b2dd9 | 258 | card->ext_csd.raw_ext_csd_structure); |
6da24b78 KP |
259 | err = -EINVAL; |
260 | goto out; | |
261 | } | |
262 | } | |
263 | ||
b1ebe384 | 264 | card->ext_csd.rev = ext_csd[EXT_CSD_REV]; |
38ca2850 | 265 | if (card->ext_csd.rev > 6) { |
a3c76eb9 | 266 | pr_err("%s: unrecognised EXT_CSD revision %d\n", |
6da24b78 | 267 | mmc_hostname(card->host), card->ext_csd.rev); |
00cedfa6 FM |
268 | err = -EINVAL; |
269 | goto out; | |
d7604d76 PO |
270 | } |
271 | ||
f39b2dd9 PR |
272 | card->ext_csd.raw_sectors[0] = ext_csd[EXT_CSD_SEC_CNT + 0]; |
273 | card->ext_csd.raw_sectors[1] = ext_csd[EXT_CSD_SEC_CNT + 1]; | |
274 | card->ext_csd.raw_sectors[2] = ext_csd[EXT_CSD_SEC_CNT + 2]; | |
275 | card->ext_csd.raw_sectors[3] = ext_csd[EXT_CSD_SEC_CNT + 3]; | |
b1ebe384 | 276 | if (card->ext_csd.rev >= 2) { |
d7604d76 PO |
277 | card->ext_csd.sectors = |
278 | ext_csd[EXT_CSD_SEC_CNT + 0] << 0 | | |
279 | ext_csd[EXT_CSD_SEC_CNT + 1] << 8 | | |
280 | ext_csd[EXT_CSD_SEC_CNT + 2] << 16 | | |
281 | ext_csd[EXT_CSD_SEC_CNT + 3] << 24; | |
fc8a0985 HP |
282 | |
283 | /* Cards with density > 2GiB are sector addressed */ | |
284 | if (card->ext_csd.sectors > (2u * 1024 * 1024 * 1024) / 512) | |
d7604d76 PO |
285 | mmc_card_set_blockaddr(card); |
286 | } | |
f39b2dd9 | 287 | card->ext_csd.raw_card_type = ext_csd[EXT_CSD_CARD_TYPE]; |
7198f3c9 | 288 | switch (ext_csd[EXT_CSD_CARD_TYPE] & EXT_CSD_CARD_TYPE_MASK) { |
dfc13e84 HP |
289 | case EXT_CSD_CARD_TYPE_DDR_52 | EXT_CSD_CARD_TYPE_52 | |
290 | EXT_CSD_CARD_TYPE_26: | |
291 | card->ext_csd.hs_max_dtr = 52000000; | |
292 | card->ext_csd.card_type = EXT_CSD_CARD_TYPE_DDR_52; | |
293 | break; | |
294 | case EXT_CSD_CARD_TYPE_DDR_1_2V | EXT_CSD_CARD_TYPE_52 | | |
295 | EXT_CSD_CARD_TYPE_26: | |
296 | card->ext_csd.hs_max_dtr = 52000000; | |
297 | card->ext_csd.card_type = EXT_CSD_CARD_TYPE_DDR_1_2V; | |
298 | break; | |
299 | case EXT_CSD_CARD_TYPE_DDR_1_8V | EXT_CSD_CARD_TYPE_52 | | |
300 | EXT_CSD_CARD_TYPE_26: | |
301 | card->ext_csd.hs_max_dtr = 52000000; | |
302 | card->ext_csd.card_type = EXT_CSD_CARD_TYPE_DDR_1_8V; | |
303 | break; | |
7ea239d9 PO |
304 | case EXT_CSD_CARD_TYPE_52 | EXT_CSD_CARD_TYPE_26: |
305 | card->ext_csd.hs_max_dtr = 52000000; | |
306 | break; | |
307 | case EXT_CSD_CARD_TYPE_26: | |
308 | card->ext_csd.hs_max_dtr = 26000000; | |
309 | break; | |
310 | default: | |
311 | /* MMC v4 spec says this cannot happen */ | |
a3c76eb9 | 312 | pr_warning("%s: card is mmc v4 but doesn't " |
7ea239d9 PO |
313 | "support any high-speed modes.\n", |
314 | mmc_hostname(card->host)); | |
7ea239d9 PO |
315 | } |
316 | ||
f39b2dd9 PR |
317 | card->ext_csd.raw_s_a_timeout = ext_csd[EXT_CSD_S_A_TIMEOUT]; |
318 | card->ext_csd.raw_erase_timeout_mult = | |
319 | ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; | |
320 | card->ext_csd.raw_hc_erase_grp_size = | |
321 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; | |
b1ebe384 JL |
322 | if (card->ext_csd.rev >= 3) { |
323 | u8 sa_shift = ext_csd[EXT_CSD_S_A_TIMEOUT]; | |
371a689f AW |
324 | card->ext_csd.part_config = ext_csd[EXT_CSD_PART_CONFIG]; |
325 | ||
326 | /* EXT_CSD value is in units of 10ms, but we store in ms */ | |
327 | card->ext_csd.part_time = 10 * ext_csd[EXT_CSD_PART_SWITCH_TIME]; | |
b1ebe384 JL |
328 | |
329 | /* Sleep / awake timeout in 100ns units */ | |
330 | if (sa_shift > 0 && sa_shift <= 0x17) | |
331 | card->ext_csd.sa_timeout = | |
332 | 1 << ext_csd[EXT_CSD_S_A_TIMEOUT]; | |
dfe86cba AH |
333 | card->ext_csd.erase_group_def = |
334 | ext_csd[EXT_CSD_ERASE_GROUP_DEF]; | |
335 | card->ext_csd.hc_erase_timeout = 300 * | |
336 | ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; | |
337 | card->ext_csd.hc_erase_size = | |
338 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] << 10; | |
f4c5522b AW |
339 | |
340 | card->ext_csd.rel_sectors = ext_csd[EXT_CSD_REL_WR_SEC_C]; | |
371a689f AW |
341 | |
342 | /* | |
343 | * There are two boot regions of equal size, defined in | |
344 | * multiples of 128K. | |
345 | */ | |
e0c368d5 NJ |
346 | if (ext_csd[EXT_CSD_BOOT_MULT] && mmc_boot_partition_access(card->host)) { |
347 | for (idx = 0; idx < MMC_NUM_BOOT_PARTITION; idx++) { | |
348 | part_size = ext_csd[EXT_CSD_BOOT_MULT] << 17; | |
349 | mmc_part_add(card, part_size, | |
350 | EXT_CSD_PART_CONFIG_ACC_BOOT0 + idx, | |
351 | "boot%d", idx, true); | |
352 | } | |
353 | } | |
dfe86cba AH |
354 | } |
355 | ||
f39b2dd9 PR |
356 | card->ext_csd.raw_hc_erase_gap_size = |
357 | ext_csd[EXT_CSD_PARTITION_ATTRIBUTE]; | |
358 | card->ext_csd.raw_sec_trim_mult = | |
359 | ext_csd[EXT_CSD_SEC_TRIM_MULT]; | |
360 | card->ext_csd.raw_sec_erase_mult = | |
361 | ext_csd[EXT_CSD_SEC_ERASE_MULT]; | |
362 | card->ext_csd.raw_sec_feature_support = | |
363 | ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; | |
364 | card->ext_csd.raw_trim_mult = | |
365 | ext_csd[EXT_CSD_TRIM_MULT]; | |
dfe86cba | 366 | if (card->ext_csd.rev >= 4) { |
709de99d CD |
367 | /* |
368 | * Enhanced area feature support -- check whether the eMMC | |
369 | * card has the Enhanced area enabled. If so, export enhanced | |
370 | * area offset and size to user by adding sysfs interface. | |
371 | */ | |
5238acbe | 372 | card->ext_csd.raw_partition_support = ext_csd[EXT_CSD_PARTITION_SUPPORT]; |
709de99d | 373 | if ((ext_csd[EXT_CSD_PARTITION_SUPPORT] & 0x2) && |
f39b2dd9 | 374 | (ext_csd[EXT_CSD_PARTITION_ATTRIBUTE] & 0x1)) { |
e0c368d5 | 375 | hc_erase_grp_sz = |
709de99d | 376 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; |
e0c368d5 | 377 | hc_wp_grp_sz = |
709de99d CD |
378 | ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; |
379 | ||
380 | card->ext_csd.enhanced_area_en = 1; | |
381 | /* | |
382 | * calculate the enhanced data area offset, in bytes | |
383 | */ | |
384 | card->ext_csd.enhanced_area_offset = | |
385 | (ext_csd[139] << 24) + (ext_csd[138] << 16) + | |
386 | (ext_csd[137] << 8) + ext_csd[136]; | |
387 | if (mmc_card_blockaddr(card)) | |
388 | card->ext_csd.enhanced_area_offset <<= 9; | |
389 | /* | |
390 | * calculate the enhanced data area size, in kilobytes | |
391 | */ | |
392 | card->ext_csd.enhanced_area_size = | |
393 | (ext_csd[142] << 16) + (ext_csd[141] << 8) + | |
394 | ext_csd[140]; | |
395 | card->ext_csd.enhanced_area_size *= | |
396 | (size_t)(hc_erase_grp_sz * hc_wp_grp_sz); | |
397 | card->ext_csd.enhanced_area_size <<= 9; | |
398 | } else { | |
399 | /* | |
400 | * If the enhanced area is not enabled, disable these | |
401 | * device attributes. | |
402 | */ | |
403 | card->ext_csd.enhanced_area_offset = -EINVAL; | |
404 | card->ext_csd.enhanced_area_size = -EINVAL; | |
405 | } | |
e0c368d5 NJ |
406 | |
407 | /* | |
408 | * General purpose partition feature support -- | |
409 | * If ext_csd has the size of general purpose partitions, | |
410 | * set size, part_cfg, partition name in mmc_part. | |
411 | */ | |
412 | if (ext_csd[EXT_CSD_PARTITION_SUPPORT] & | |
413 | EXT_CSD_PART_SUPPORT_PART_EN) { | |
414 | if (card->ext_csd.enhanced_area_en != 1) { | |
415 | hc_erase_grp_sz = | |
416 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; | |
417 | hc_wp_grp_sz = | |
418 | ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; | |
419 | ||
420 | card->ext_csd.enhanced_area_en = 1; | |
421 | } | |
422 | ||
423 | for (idx = 0; idx < MMC_NUM_GP_PARTITION; idx++) { | |
424 | if (!ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3] && | |
425 | !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] && | |
426 | !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2]) | |
427 | continue; | |
428 | part_size = | |
429 | (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2] | |
430 | << 16) + | |
431 | (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] | |
432 | << 8) + | |
433 | ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3]; | |
434 | part_size *= (size_t)(hc_erase_grp_sz * | |
435 | hc_wp_grp_sz); | |
436 | mmc_part_add(card, part_size << 19, | |
437 | EXT_CSD_PART_CONFIG_ACC_GP0 + idx, | |
438 | "gp%d", idx, false); | |
439 | } | |
440 | } | |
dfe86cba AH |
441 | card->ext_csd.sec_trim_mult = |
442 | ext_csd[EXT_CSD_SEC_TRIM_MULT]; | |
443 | card->ext_csd.sec_erase_mult = | |
444 | ext_csd[EXT_CSD_SEC_ERASE_MULT]; | |
445 | card->ext_csd.sec_feature_support = | |
446 | ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; | |
447 | card->ext_csd.trim_timeout = 300 * | |
448 | ext_csd[EXT_CSD_TRIM_MULT]; | |
b1ebe384 JL |
449 | } |
450 | ||
b2499518 | 451 | if (card->ext_csd.rev >= 5) { |
eb0d8f13 JC |
452 | /* check whether the eMMC card supports HPI */ |
453 | if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x1) { | |
454 | card->ext_csd.hpi = 1; | |
455 | if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x2) | |
456 | card->ext_csd.hpi_cmd = MMC_STOP_TRANSMISSION; | |
457 | else | |
458 | card->ext_csd.hpi_cmd = MMC_SEND_STATUS; | |
459 | /* | |
460 | * Indicate the maximum timeout to close | |
461 | * a command interrupted by HPI | |
462 | */ | |
463 | card->ext_csd.out_of_int_time = | |
464 | ext_csd[EXT_CSD_OUT_OF_INTERRUPT_TIME] * 10; | |
465 | } | |
466 | ||
f4c5522b | 467 | card->ext_csd.rel_param = ext_csd[EXT_CSD_WR_REL_PARAM]; |
b2499518 AH |
468 | card->ext_csd.rst_n_function = ext_csd[EXT_CSD_RST_N_FUNCTION]; |
469 | } | |
f4c5522b | 470 | |
5238acbe | 471 | card->ext_csd.raw_erased_mem_count = ext_csd[EXT_CSD_ERASED_MEM_CONT]; |
dfe86cba AH |
472 | if (ext_csd[EXT_CSD_ERASED_MEM_CONT]) |
473 | card->erased_byte = 0xFF; | |
474 | else | |
475 | card->erased_byte = 0x0; | |
476 | ||
336c716a | 477 | /* eMMC v4.5 or later */ |
bec8726a | 478 | if (card->ext_csd.rev >= 6) { |
336c716a SJ |
479 | card->ext_csd.feature_support |= MMC_DISCARD_FEATURE; |
480 | ||
b23cf0bd SJ |
481 | card->ext_csd.generic_cmd6_time = 10 * |
482 | ext_csd[EXT_CSD_GENERIC_CMD6_TIME]; | |
bec8726a G |
483 | card->ext_csd.power_off_longtime = 10 * |
484 | ext_csd[EXT_CSD_POWER_OFF_LONG_TIME]; | |
b23cf0bd | 485 | |
336c716a SJ |
486 | card->ext_csd.cache_size = |
487 | ext_csd[EXT_CSD_CACHE_SIZE + 0] << 0 | | |
488 | ext_csd[EXT_CSD_CACHE_SIZE + 1] << 8 | | |
489 | ext_csd[EXT_CSD_CACHE_SIZE + 2] << 16 | | |
490 | ext_csd[EXT_CSD_CACHE_SIZE + 3] << 24; | |
491 | } | |
881d1c25 | 492 | |
7ea239d9 | 493 | out: |
08ee80cc PR |
494 | return err; |
495 | } | |
496 | ||
497 | static inline void mmc_free_ext_csd(u8 *ext_csd) | |
498 | { | |
7ea239d9 | 499 | kfree(ext_csd); |
08ee80cc PR |
500 | } |
501 | ||
7ea239d9 | 502 | |
f39b2dd9 | 503 | static int mmc_compare_ext_csds(struct mmc_card *card, unsigned bus_width) |
08ee80cc PR |
504 | { |
505 | u8 *bw_ext_csd; | |
506 | int err; | |
507 | ||
f39b2dd9 PR |
508 | if (bus_width == MMC_BUS_WIDTH_1) |
509 | return 0; | |
510 | ||
08ee80cc | 511 | err = mmc_get_ext_csd(card, &bw_ext_csd); |
08ee80cc | 512 | |
f39b2dd9 | 513 | if (err || bw_ext_csd == NULL) { |
08ee80cc PR |
514 | if (bus_width != MMC_BUS_WIDTH_1) |
515 | err = -EINVAL; | |
516 | goto out; | |
517 | } | |
518 | ||
519 | if (bus_width == MMC_BUS_WIDTH_1) | |
520 | goto out; | |
521 | ||
522 | /* only compare read only fields */ | |
f39b2dd9 | 523 | err = (!(card->ext_csd.raw_partition_support == |
08ee80cc | 524 | bw_ext_csd[EXT_CSD_PARTITION_SUPPORT]) && |
f39b2dd9 | 525 | (card->ext_csd.raw_erased_mem_count == |
08ee80cc | 526 | bw_ext_csd[EXT_CSD_ERASED_MEM_CONT]) && |
f39b2dd9 | 527 | (card->ext_csd.rev == |
08ee80cc | 528 | bw_ext_csd[EXT_CSD_REV]) && |
f39b2dd9 | 529 | (card->ext_csd.raw_ext_csd_structure == |
08ee80cc | 530 | bw_ext_csd[EXT_CSD_STRUCTURE]) && |
f39b2dd9 | 531 | (card->ext_csd.raw_card_type == |
08ee80cc | 532 | bw_ext_csd[EXT_CSD_CARD_TYPE]) && |
f39b2dd9 | 533 | (card->ext_csd.raw_s_a_timeout == |
08ee80cc | 534 | bw_ext_csd[EXT_CSD_S_A_TIMEOUT]) && |
f39b2dd9 | 535 | (card->ext_csd.raw_hc_erase_gap_size == |
08ee80cc | 536 | bw_ext_csd[EXT_CSD_HC_WP_GRP_SIZE]) && |
f39b2dd9 | 537 | (card->ext_csd.raw_erase_timeout_mult == |
08ee80cc | 538 | bw_ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]) && |
f39b2dd9 | 539 | (card->ext_csd.raw_hc_erase_grp_size == |
08ee80cc | 540 | bw_ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]) && |
f39b2dd9 | 541 | (card->ext_csd.raw_sec_trim_mult == |
08ee80cc | 542 | bw_ext_csd[EXT_CSD_SEC_TRIM_MULT]) && |
f39b2dd9 | 543 | (card->ext_csd.raw_sec_erase_mult == |
08ee80cc | 544 | bw_ext_csd[EXT_CSD_SEC_ERASE_MULT]) && |
f39b2dd9 | 545 | (card->ext_csd.raw_sec_feature_support == |
08ee80cc | 546 | bw_ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]) && |
f39b2dd9 | 547 | (card->ext_csd.raw_trim_mult == |
08ee80cc | 548 | bw_ext_csd[EXT_CSD_TRIM_MULT]) && |
f39b2dd9 PR |
549 | (card->ext_csd.raw_sectors[0] == |
550 | bw_ext_csd[EXT_CSD_SEC_CNT + 0]) && | |
551 | (card->ext_csd.raw_sectors[1] == | |
552 | bw_ext_csd[EXT_CSD_SEC_CNT + 1]) && | |
553 | (card->ext_csd.raw_sectors[2] == | |
554 | bw_ext_csd[EXT_CSD_SEC_CNT + 2]) && | |
555 | (card->ext_csd.raw_sectors[3] == | |
556 | bw_ext_csd[EXT_CSD_SEC_CNT + 3])); | |
08ee80cc PR |
557 | if (err) |
558 | err = -EINVAL; | |
559 | ||
560 | out: | |
561 | mmc_free_ext_csd(bw_ext_csd); | |
7ea239d9 PO |
562 | return err; |
563 | } | |
564 | ||
51ec92e2 PO |
565 | MMC_DEV_ATTR(cid, "%08x%08x%08x%08x\n", card->raw_cid[0], card->raw_cid[1], |
566 | card->raw_cid[2], card->raw_cid[3]); | |
567 | MMC_DEV_ATTR(csd, "%08x%08x%08x%08x\n", card->raw_csd[0], card->raw_csd[1], | |
568 | card->raw_csd[2], card->raw_csd[3]); | |
569 | MMC_DEV_ATTR(date, "%02d/%04d\n", card->cid.month, card->cid.year); | |
dfe86cba AH |
570 | MMC_DEV_ATTR(erase_size, "%u\n", card->erase_size << 9); |
571 | MMC_DEV_ATTR(preferred_erase_size, "%u\n", card->pref_erase << 9); | |
51ec92e2 PO |
572 | MMC_DEV_ATTR(fwrev, "0x%x\n", card->cid.fwrev); |
573 | MMC_DEV_ATTR(hwrev, "0x%x\n", card->cid.hwrev); | |
574 | MMC_DEV_ATTR(manfid, "0x%06x\n", card->cid.manfid); | |
575 | MMC_DEV_ATTR(name, "%s\n", card->cid.prod_name); | |
576 | MMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid); | |
577 | MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial); | |
709de99d CD |
578 | MMC_DEV_ATTR(enhanced_area_offset, "%llu\n", |
579 | card->ext_csd.enhanced_area_offset); | |
580 | MMC_DEV_ATTR(enhanced_area_size, "%u\n", card->ext_csd.enhanced_area_size); | |
51ec92e2 PO |
581 | |
582 | static struct attribute *mmc_std_attrs[] = { | |
583 | &dev_attr_cid.attr, | |
584 | &dev_attr_csd.attr, | |
585 | &dev_attr_date.attr, | |
dfe86cba AH |
586 | &dev_attr_erase_size.attr, |
587 | &dev_attr_preferred_erase_size.attr, | |
51ec92e2 PO |
588 | &dev_attr_fwrev.attr, |
589 | &dev_attr_hwrev.attr, | |
590 | &dev_attr_manfid.attr, | |
591 | &dev_attr_name.attr, | |
592 | &dev_attr_oemid.attr, | |
593 | &dev_attr_serial.attr, | |
709de99d CD |
594 | &dev_attr_enhanced_area_offset.attr, |
595 | &dev_attr_enhanced_area_size.attr, | |
51ec92e2 PO |
596 | NULL, |
597 | }; | |
598 | ||
599 | static struct attribute_group mmc_std_attr_group = { | |
600 | .attrs = mmc_std_attrs, | |
601 | }; | |
602 | ||
a4dbd674 | 603 | static const struct attribute_group *mmc_attr_groups[] = { |
51ec92e2 PO |
604 | &mmc_std_attr_group, |
605 | NULL, | |
606 | }; | |
607 | ||
608 | static struct device_type mmc_type = { | |
609 | .groups = mmc_attr_groups, | |
610 | }; | |
611 | ||
b87d8dbf G |
612 | /* |
613 | * Select the PowerClass for the current bus width | |
614 | * If power class is defined for 4/8 bit bus in the | |
615 | * extended CSD register, select it by executing the | |
616 | * mmc_switch command. | |
617 | */ | |
618 | static int mmc_select_powerclass(struct mmc_card *card, | |
619 | unsigned int bus_width, u8 *ext_csd) | |
620 | { | |
621 | int err = 0; | |
622 | unsigned int pwrclass_val; | |
623 | unsigned int index = 0; | |
624 | struct mmc_host *host; | |
625 | ||
626 | BUG_ON(!card); | |
627 | ||
628 | host = card->host; | |
629 | BUG_ON(!host); | |
630 | ||
631 | if (ext_csd == NULL) | |
632 | return 0; | |
633 | ||
634 | /* Power class selection is supported for versions >= 4.0 */ | |
635 | if (card->csd.mmca_vsn < CSD_SPEC_VER_4) | |
636 | return 0; | |
637 | ||
638 | /* Power class values are defined only for 4/8 bit bus */ | |
639 | if (bus_width == EXT_CSD_BUS_WIDTH_1) | |
640 | return 0; | |
641 | ||
642 | switch (1 << host->ios.vdd) { | |
643 | case MMC_VDD_165_195: | |
644 | if (host->ios.clock <= 26000000) | |
645 | index = EXT_CSD_PWR_CL_26_195; | |
646 | else if (host->ios.clock <= 52000000) | |
647 | index = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? | |
648 | EXT_CSD_PWR_CL_52_195 : | |
649 | EXT_CSD_PWR_CL_DDR_52_195; | |
650 | else if (host->ios.clock <= 200000000) | |
651 | index = EXT_CSD_PWR_CL_200_195; | |
652 | break; | |
653 | case MMC_VDD_32_33: | |
654 | case MMC_VDD_33_34: | |
655 | case MMC_VDD_34_35: | |
656 | case MMC_VDD_35_36: | |
657 | if (host->ios.clock <= 26000000) | |
658 | index = EXT_CSD_PWR_CL_26_360; | |
659 | else if (host->ios.clock <= 52000000) | |
660 | index = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? | |
661 | EXT_CSD_PWR_CL_52_360 : | |
662 | EXT_CSD_PWR_CL_DDR_52_360; | |
663 | else if (host->ios.clock <= 200000000) | |
664 | index = EXT_CSD_PWR_CL_200_360; | |
665 | break; | |
666 | default: | |
667 | pr_warning("%s: Voltage range not supported " | |
668 | "for power class.\n", mmc_hostname(host)); | |
669 | return -EINVAL; | |
670 | } | |
671 | ||
672 | pwrclass_val = ext_csd[index]; | |
673 | ||
674 | if (bus_width & (EXT_CSD_BUS_WIDTH_8 | EXT_CSD_DDR_BUS_WIDTH_8)) | |
675 | pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_8BIT_MASK) >> | |
676 | EXT_CSD_PWR_CL_8BIT_SHIFT; | |
677 | else | |
678 | pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_4BIT_MASK) >> | |
679 | EXT_CSD_PWR_CL_4BIT_SHIFT; | |
680 | ||
681 | /* If the power class is different from the default value */ | |
682 | if (pwrclass_val > 0) { | |
683 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
684 | EXT_CSD_POWER_CLASS, | |
685 | pwrclass_val, | |
71fe3eb0 | 686 | card->ext_csd.generic_cmd6_time); |
b87d8dbf G |
687 | } |
688 | ||
689 | return err; | |
690 | } | |
691 | ||
7ea239d9 | 692 | /* |
6abaa0c9 PO |
693 | * Handle the detection and initialisation of a card. |
694 | * | |
8769392b | 695 | * In the case of a resume, "oldcard" will contain the card |
6abaa0c9 | 696 | * we're trying to reinitialise. |
7ea239d9 | 697 | */ |
8c75deae | 698 | static int mmc_init_card(struct mmc_host *host, u32 ocr, |
6abaa0c9 | 699 | struct mmc_card *oldcard) |
7ea239d9 PO |
700 | { |
701 | struct mmc_card *card; | |
25d5c699 | 702 | int err, ddr = 0; |
7ea239d9 PO |
703 | u32 cid[4]; |
704 | unsigned int max_dtr; | |
b676f039 | 705 | u32 rocr; |
08ee80cc | 706 | u8 *ext_csd = NULL; |
7ea239d9 PO |
707 | |
708 | BUG_ON(!host); | |
d84075c8 | 709 | WARN_ON(!host->claimed); |
7ea239d9 | 710 | |
44669034 SNX |
711 | /* Set correct bus mode for MMC before attempting init */ |
712 | if (!mmc_host_is_spi(host)) | |
713 | mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); | |
714 | ||
7ea239d9 PO |
715 | /* |
716 | * Since we're changing the OCR value, we seem to | |
717 | * need to tell some cards to go back to the idle | |
718 | * state. We wait 1ms to give cards time to | |
719 | * respond. | |
c3805467 | 720 | * mmc_go_idle is needed for eMMC that are asleep |
7ea239d9 PO |
721 | */ |
722 | mmc_go_idle(host); | |
723 | ||
724 | /* The extra bit indicates that we support high capacity */ | |
b676f039 | 725 | err = mmc_send_op_cond(host, ocr | (1 << 30), &rocr); |
17b0429d | 726 | if (err) |
6abaa0c9 | 727 | goto err; |
7ea239d9 | 728 | |
af517150 DB |
729 | /* |
730 | * For SPI, enable CRC as appropriate. | |
731 | */ | |
732 | if (mmc_host_is_spi(host)) { | |
733 | err = mmc_spi_set_crc(host, use_spi_crc); | |
734 | if (err) | |
735 | goto err; | |
736 | } | |
737 | ||
7ea239d9 PO |
738 | /* |
739 | * Fetch CID from card. | |
740 | */ | |
af517150 DB |
741 | if (mmc_host_is_spi(host)) |
742 | err = mmc_send_cid(host, cid); | |
743 | else | |
744 | err = mmc_all_send_cid(host, cid); | |
17b0429d | 745 | if (err) |
7ea239d9 PO |
746 | goto err; |
747 | ||
6abaa0c9 | 748 | if (oldcard) { |
adf66a0d PO |
749 | if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) { |
750 | err = -ENOENT; | |
6abaa0c9 | 751 | goto err; |
adf66a0d | 752 | } |
6abaa0c9 PO |
753 | |
754 | card = oldcard; | |
755 | } else { | |
756 | /* | |
757 | * Allocate card structure. | |
758 | */ | |
51ec92e2 | 759 | card = mmc_alloc_card(host, &mmc_type); |
adf66a0d PO |
760 | if (IS_ERR(card)) { |
761 | err = PTR_ERR(card); | |
6abaa0c9 | 762 | goto err; |
adf66a0d | 763 | } |
7ea239d9 | 764 | |
6abaa0c9 PO |
765 | card->type = MMC_TYPE_MMC; |
766 | card->rca = 1; | |
767 | memcpy(card->raw_cid, cid, sizeof(card->raw_cid)); | |
768 | } | |
7ea239d9 PO |
769 | |
770 | /* | |
af517150 | 771 | * For native busses: set card RCA and quit open drain mode. |
7ea239d9 | 772 | */ |
af517150 DB |
773 | if (!mmc_host_is_spi(host)) { |
774 | err = mmc_set_relative_addr(card); | |
775 | if (err) | |
776 | goto free_card; | |
7ea239d9 | 777 | |
af517150 DB |
778 | mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL); |
779 | } | |
7ea239d9 | 780 | |
6abaa0c9 PO |
781 | if (!oldcard) { |
782 | /* | |
783 | * Fetch CSD from card. | |
784 | */ | |
785 | err = mmc_send_csd(card, card->raw_csd); | |
17b0429d | 786 | if (err) |
6abaa0c9 | 787 | goto free_card; |
7ea239d9 | 788 | |
bd766312 | 789 | err = mmc_decode_csd(card); |
adf66a0d | 790 | if (err) |
bd766312 PO |
791 | goto free_card; |
792 | err = mmc_decode_cid(card); | |
adf66a0d | 793 | if (err) |
bd766312 | 794 | goto free_card; |
6abaa0c9 | 795 | } |
7ea239d9 PO |
796 | |
797 | /* | |
89a73cf5 | 798 | * Select card, as all following commands rely on that. |
7ea239d9 | 799 | */ |
af517150 DB |
800 | if (!mmc_host_is_spi(host)) { |
801 | err = mmc_select_card(card); | |
802 | if (err) | |
803 | goto free_card; | |
804 | } | |
7ea239d9 | 805 | |
6abaa0c9 PO |
806 | if (!oldcard) { |
807 | /* | |
af517150 | 808 | * Fetch and process extended CSD. |
6abaa0c9 | 809 | */ |
08ee80cc PR |
810 | |
811 | err = mmc_get_ext_csd(card, &ext_csd); | |
812 | if (err) | |
813 | goto free_card; | |
814 | err = mmc_read_ext_csd(card, ext_csd); | |
17b0429d | 815 | if (err) |
6abaa0c9 | 816 | goto free_card; |
b676f039 PR |
817 | |
818 | /* If doing byte addressing, check if required to do sector | |
819 | * addressing. Handle the case of <2GB cards needing sector | |
820 | * addressing. See section 8.1 JEDEC Standard JED84-A441; | |
821 | * ocr register has bit 30 set for sector addressing. | |
822 | */ | |
823 | if (!(mmc_card_blockaddr(card)) && (rocr & (1<<30))) | |
824 | mmc_card_set_blockaddr(card); | |
825 | ||
dfe86cba AH |
826 | /* Erase size depends on CSD and Extended CSD */ |
827 | mmc_set_erase_size(card); | |
6abaa0c9 | 828 | } |
7ea239d9 | 829 | |
709de99d CD |
830 | /* |
831 | * If enhanced_area_en is TRUE, host needs to enable ERASE_GRP_DEF | |
25985edc | 832 | * bit. This bit will be lost every time after a reset or power off. |
709de99d CD |
833 | */ |
834 | if (card->ext_csd.enhanced_area_en) { | |
835 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
b23cf0bd SJ |
836 | EXT_CSD_ERASE_GROUP_DEF, 1, |
837 | card->ext_csd.generic_cmd6_time); | |
709de99d CD |
838 | |
839 | if (err && err != -EBADMSG) | |
840 | goto free_card; | |
841 | ||
842 | if (err) { | |
843 | err = 0; | |
844 | /* | |
845 | * Just disable enhanced area off & sz | |
846 | * will try to enable ERASE_GROUP_DEF | |
847 | * during next time reinit | |
848 | */ | |
849 | card->ext_csd.enhanced_area_offset = -EINVAL; | |
850 | card->ext_csd.enhanced_area_size = -EINVAL; | |
851 | } else { | |
852 | card->ext_csd.erase_group_def = 1; | |
853 | /* | |
854 | * enable ERASE_GRP_DEF successfully. | |
855 | * This will affect the erase size, so | |
856 | * here need to reset erase size | |
857 | */ | |
858 | mmc_set_erase_size(card); | |
859 | } | |
860 | } | |
861 | ||
41e2a489 PR |
862 | /* |
863 | * Ensure eMMC user default partition is enabled | |
864 | */ | |
371a689f AW |
865 | if (card->ext_csd.part_config & EXT_CSD_PART_CONFIG_ACC_MASK) { |
866 | card->ext_csd.part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK; | |
867 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONFIG, | |
868 | card->ext_csd.part_config, | |
869 | card->ext_csd.part_time); | |
870 | if (err && err != -EBADMSG) | |
871 | goto free_card; | |
41e2a489 PR |
872 | } |
873 | ||
bec8726a G |
874 | /* |
875 | * If the host supports the power_off_notify capability then | |
876 | * set the notification byte in the ext_csd register of device | |
877 | */ | |
878 | if ((host->caps2 & MMC_CAP2_POWEROFF_NOTIFY) && | |
a80f1627 | 879 | (card->ext_csd.rev >= 6)) { |
bec8726a G |
880 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
881 | EXT_CSD_POWER_OFF_NOTIFICATION, | |
882 | EXT_CSD_POWER_ON, | |
883 | card->ext_csd.generic_cmd6_time); | |
884 | if (err && err != -EBADMSG) | |
885 | goto free_card; | |
bec8726a | 886 | |
96a85d54 G |
887 | /* |
888 | * The err can be -EBADMSG or 0, | |
889 | * so check for success and update the flag | |
890 | */ | |
891 | if (!err) | |
892 | card->poweroff_notify_state = MMC_POWERED_ON; | |
893 | } | |
bec8726a | 894 | |
89a73cf5 PO |
895 | /* |
896 | * Activate high speed (if supported) | |
897 | */ | |
898 | if ((card->ext_csd.hs_max_dtr != 0) && | |
899 | (host->caps & MMC_CAP_MMC_HIGHSPEED)) { | |
900 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
b23cf0bd SJ |
901 | EXT_CSD_HS_TIMING, 1, |
902 | card->ext_csd.generic_cmd6_time); | |
ef0b27d4 | 903 | if (err && err != -EBADMSG) |
89a73cf5 PO |
904 | goto free_card; |
905 | ||
ef0b27d4 | 906 | if (err) { |
a3c76eb9 | 907 | pr_warning("%s: switch to highspeed failed\n", |
ef0b27d4 AH |
908 | mmc_hostname(card->host)); |
909 | err = 0; | |
910 | } else { | |
911 | mmc_card_set_highspeed(card); | |
912 | mmc_set_timing(card->host, MMC_TIMING_MMC_HS); | |
913 | } | |
89a73cf5 PO |
914 | } |
915 | ||
eb0d8f13 JC |
916 | /* |
917 | * Enable HPI feature (if supported) | |
918 | */ | |
919 | if (card->ext_csd.hpi) { | |
920 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
921 | EXT_CSD_HPI_MGMT, 1, 0); | |
922 | if (err && err != -EBADMSG) | |
923 | goto free_card; | |
924 | if (err) { | |
925 | pr_warning("%s: Enabling HPI failed\n", | |
926 | mmc_hostname(card->host)); | |
927 | err = 0; | |
928 | } else | |
929 | card->ext_csd.hpi_en = 1; | |
930 | } | |
931 | ||
7ea239d9 PO |
932 | /* |
933 | * Compute bus speed. | |
934 | */ | |
935 | max_dtr = (unsigned int)-1; | |
936 | ||
937 | if (mmc_card_highspeed(card)) { | |
938 | if (max_dtr > card->ext_csd.hs_max_dtr) | |
939 | max_dtr = card->ext_csd.hs_max_dtr; | |
940 | } else if (max_dtr > card->csd.max_dtr) { | |
941 | max_dtr = card->csd.max_dtr; | |
942 | } | |
943 | ||
944 | mmc_set_clock(host, max_dtr); | |
945 | ||
dfc13e84 | 946 | /* |
0f8d8ea6 | 947 | * Indicate DDR mode (if supported). |
dfc13e84 HP |
948 | */ |
949 | if (mmc_card_highspeed(card)) { | |
950 | if ((card->ext_csd.card_type & EXT_CSD_CARD_TYPE_DDR_1_8V) | |
4c4cb171 PR |
951 | && ((host->caps & (MMC_CAP_1_8V_DDR | |
952 | MMC_CAP_UHS_DDR50)) | |
953 | == (MMC_CAP_1_8V_DDR | MMC_CAP_UHS_DDR50))) | |
49e3b5a4 | 954 | ddr = MMC_1_8V_DDR_MODE; |
dfc13e84 | 955 | else if ((card->ext_csd.card_type & EXT_CSD_CARD_TYPE_DDR_1_2V) |
4c4cb171 PR |
956 | && ((host->caps & (MMC_CAP_1_2V_DDR | |
957 | MMC_CAP_UHS_DDR50)) | |
958 | == (MMC_CAP_1_2V_DDR | MMC_CAP_UHS_DDR50))) | |
49e3b5a4 | 959 | ddr = MMC_1_2V_DDR_MODE; |
dfc13e84 HP |
960 | } |
961 | ||
89a73cf5 | 962 | /* |
0f8d8ea6 | 963 | * Activate wide bus and DDR (if supported). |
89a73cf5 PO |
964 | */ |
965 | if ((card->csd.mmca_vsn >= CSD_SPEC_VER_4) && | |
b30f8af3 | 966 | (host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) { |
22113efd AL |
967 | static unsigned ext_csd_bits[][2] = { |
968 | { EXT_CSD_BUS_WIDTH_8, EXT_CSD_DDR_BUS_WIDTH_8 }, | |
969 | { EXT_CSD_BUS_WIDTH_4, EXT_CSD_DDR_BUS_WIDTH_4 }, | |
970 | { EXT_CSD_BUS_WIDTH_1, EXT_CSD_BUS_WIDTH_1 }, | |
971 | }; | |
972 | static unsigned bus_widths[] = { | |
973 | MMC_BUS_WIDTH_8, | |
974 | MMC_BUS_WIDTH_4, | |
975 | MMC_BUS_WIDTH_1 | |
976 | }; | |
977 | unsigned idx, bus_width = 0; | |
978 | ||
979 | if (host->caps & MMC_CAP_8_BIT_DATA) | |
980 | idx = 0; | |
981 | else | |
982 | idx = 1; | |
983 | for (; idx < ARRAY_SIZE(bus_widths); idx++) { | |
984 | bus_width = bus_widths[idx]; | |
985 | if (bus_width == MMC_BUS_WIDTH_1) | |
986 | ddr = 0; /* no DDR for 1-bit width */ | |
b87d8dbf G |
987 | err = mmc_select_powerclass(card, ext_csd_bits[idx][0], |
988 | ext_csd); | |
989 | if (err) | |
990 | pr_err("%s: power class selection to " | |
991 | "bus width %d failed\n", | |
992 | mmc_hostname(card->host), | |
993 | 1 << bus_width); | |
994 | ||
22113efd AL |
995 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
996 | EXT_CSD_BUS_WIDTH, | |
d3a8d95d | 997 | ext_csd_bits[idx][0], |
b23cf0bd | 998 | card->ext_csd.generic_cmd6_time); |
22113efd | 999 | if (!err) { |
4c4cb171 | 1000 | mmc_set_bus_width(card->host, bus_width); |
08ee80cc | 1001 | |
22113efd AL |
1002 | /* |
1003 | * If controller can't handle bus width test, | |
08ee80cc PR |
1004 | * compare ext_csd previously read in 1 bit mode |
1005 | * against ext_csd at new bus width | |
22113efd AL |
1006 | */ |
1007 | if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST)) | |
08ee80cc | 1008 | err = mmc_compare_ext_csds(card, |
08ee80cc PR |
1009 | bus_width); |
1010 | else | |
1011 | err = mmc_bus_test(card, bus_width); | |
22113efd AL |
1012 | if (!err) |
1013 | break; | |
1014 | } | |
b30f8af3 JL |
1015 | } |
1016 | ||
22113efd | 1017 | if (!err && ddr) { |
b87d8dbf G |
1018 | err = mmc_select_powerclass(card, ext_csd_bits[idx][1], |
1019 | ext_csd); | |
1020 | if (err) | |
1021 | pr_err("%s: power class selection to " | |
1022 | "bus width %d ddr %d failed\n", | |
1023 | mmc_hostname(card->host), | |
1024 | 1 << bus_width, ddr); | |
1025 | ||
22113efd | 1026 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
d3a8d95d AW |
1027 | EXT_CSD_BUS_WIDTH, |
1028 | ext_csd_bits[idx][1], | |
b23cf0bd | 1029 | card->ext_csd.generic_cmd6_time); |
22113efd | 1030 | } |
ef0b27d4 | 1031 | if (err) { |
a3c76eb9 | 1032 | pr_warning("%s: switch to bus width %d ddr %d " |
22113efd AL |
1033 | "failed\n", mmc_hostname(card->host), |
1034 | 1 << bus_width, ddr); | |
1035 | goto free_card; | |
1036 | } else if (ddr) { | |
4c4cb171 PR |
1037 | /* |
1038 | * eMMC cards can support 3.3V to 1.2V i/o (vccq) | |
1039 | * signaling. | |
1040 | * | |
1041 | * EXT_CSD_CARD_TYPE_DDR_1_8V means 3.3V or 1.8V vccq. | |
1042 | * | |
1043 | * 1.8V vccq at 3.3V core voltage (vcc) is not required | |
1044 | * in the JEDEC spec for DDR. | |
1045 | * | |
1046 | * Do not force change in vccq since we are obviously | |
1047 | * working and no change to vccq is needed. | |
1048 | * | |
1049 | * WARNING: eMMC rules are NOT the same as SD DDR | |
1050 | */ | |
1051 | if (ddr == EXT_CSD_CARD_TYPE_DDR_1_2V) { | |
1052 | err = mmc_set_signal_voltage(host, | |
1053 | MMC_SIGNAL_VOLTAGE_120, 0); | |
1054 | if (err) | |
1055 | goto err; | |
1056 | } | |
22113efd | 1057 | mmc_card_set_ddr_mode(card); |
4c4cb171 PR |
1058 | mmc_set_timing(card->host, MMC_TIMING_UHS_DDR50); |
1059 | mmc_set_bus_width(card->host, bus_width); | |
ef0b27d4 | 1060 | } |
89a73cf5 PO |
1061 | } |
1062 | ||
881d1c25 SJ |
1063 | /* |
1064 | * If cache size is higher than 0, this indicates | |
1065 | * the existence of cache and it can be turned on. | |
1066 | */ | |
1067 | if ((host->caps2 & MMC_CAP2_CACHE_CTRL) && | |
1068 | card->ext_csd.cache_size > 0) { | |
1069 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1070 | EXT_CSD_CACHE_CTRL, 1, 0); | |
1071 | if (err && err != -EBADMSG) | |
1072 | goto free_card; | |
1073 | ||
1074 | /* | |
1075 | * Only if no error, cache is turned on successfully. | |
1076 | */ | |
1077 | card->ext_csd.cache_ctrl = err ? 0 : 1; | |
1078 | } | |
1079 | ||
6abaa0c9 PO |
1080 | if (!oldcard) |
1081 | host->card = card; | |
1082 | ||
08ee80cc | 1083 | mmc_free_ext_csd(ext_csd); |
17b0429d | 1084 | return 0; |
6abaa0c9 PO |
1085 | |
1086 | free_card: | |
1087 | if (!oldcard) | |
1088 | mmc_remove_card(card); | |
1089 | err: | |
08ee80cc | 1090 | mmc_free_ext_csd(ext_csd); |
6abaa0c9 | 1091 | |
adf66a0d | 1092 | return err; |
6abaa0c9 PO |
1093 | } |
1094 | ||
1095 | /* | |
1096 | * Host is being removed. Free up the current card. | |
1097 | */ | |
1098 | static void mmc_remove(struct mmc_host *host) | |
1099 | { | |
1100 | BUG_ON(!host); | |
1101 | BUG_ON(!host->card); | |
1102 | ||
1103 | mmc_remove_card(host->card); | |
1104 | host->card = NULL; | |
1105 | } | |
1106 | ||
1107 | /* | |
1108 | * Card detection callback from host. | |
1109 | */ | |
1110 | static void mmc_detect(struct mmc_host *host) | |
1111 | { | |
1112 | int err; | |
1113 | ||
1114 | BUG_ON(!host); | |
1115 | BUG_ON(!host->card); | |
1116 | ||
1117 | mmc_claim_host(host); | |
1118 | ||
1119 | /* | |
1120 | * Just check if our card has been removed. | |
1121 | */ | |
1122 | err = mmc_send_status(host->card, NULL); | |
1123 | ||
1124 | mmc_release_host(host); | |
1125 | ||
17b0429d | 1126 | if (err) { |
4101c16a | 1127 | mmc_remove(host); |
6abaa0c9 PO |
1128 | |
1129 | mmc_claim_host(host); | |
1130 | mmc_detach_bus(host); | |
7f7e4129 | 1131 | mmc_power_off(host); |
6abaa0c9 PO |
1132 | mmc_release_host(host); |
1133 | } | |
1134 | } | |
1135 | ||
6abaa0c9 PO |
1136 | /* |
1137 | * Suspend callback from host. | |
1138 | */ | |
95cdfb72 | 1139 | static int mmc_suspend(struct mmc_host *host) |
6abaa0c9 | 1140 | { |
c3805467 B |
1141 | int err = 0; |
1142 | ||
6abaa0c9 PO |
1143 | BUG_ON(!host); |
1144 | BUG_ON(!host->card); | |
7ea239d9 | 1145 | |
6abaa0c9 | 1146 | mmc_claim_host(host); |
c3805467 B |
1147 | if (mmc_card_can_sleep(host)) |
1148 | err = mmc_card_sleep(host); | |
1149 | else if (!mmc_host_is_spi(host)) | |
af517150 | 1150 | mmc_deselect_cards(host); |
6abaa0c9 | 1151 | host->card->state &= ~MMC_STATE_HIGHSPEED; |
7ea239d9 | 1152 | mmc_release_host(host); |
95cdfb72 | 1153 | |
c3805467 | 1154 | return err; |
6abaa0c9 | 1155 | } |
7ea239d9 | 1156 | |
6abaa0c9 PO |
1157 | /* |
1158 | * Resume callback from host. | |
1159 | * | |
1160 | * This function tries to determine if the same card is still present | |
1161 | * and, if so, restore all state to it. | |
1162 | */ | |
95cdfb72 | 1163 | static int mmc_resume(struct mmc_host *host) |
6abaa0c9 PO |
1164 | { |
1165 | int err; | |
1166 | ||
1167 | BUG_ON(!host); | |
1168 | BUG_ON(!host->card); | |
1169 | ||
1170 | mmc_claim_host(host); | |
8c75deae | 1171 | err = mmc_init_card(host, host->ocr, host->card); |
2986d0bf PO |
1172 | mmc_release_host(host); |
1173 | ||
95cdfb72 | 1174 | return err; |
6abaa0c9 PO |
1175 | } |
1176 | ||
12ae637f | 1177 | static int mmc_power_restore(struct mmc_host *host) |
eae1aeee | 1178 | { |
12ae637f OBC |
1179 | int ret; |
1180 | ||
eae1aeee AH |
1181 | host->card->state &= ~MMC_STATE_HIGHSPEED; |
1182 | mmc_claim_host(host); | |
12ae637f | 1183 | ret = mmc_init_card(host, host->ocr, host->card); |
eae1aeee | 1184 | mmc_release_host(host); |
12ae637f OBC |
1185 | |
1186 | return ret; | |
eae1aeee AH |
1187 | } |
1188 | ||
b1ebe384 JL |
1189 | static int mmc_sleep(struct mmc_host *host) |
1190 | { | |
1191 | struct mmc_card *card = host->card; | |
1192 | int err = -ENOSYS; | |
1193 | ||
1194 | if (card && card->ext_csd.rev >= 3) { | |
1195 | err = mmc_card_sleepawake(host, 1); | |
1196 | if (err < 0) | |
1197 | pr_debug("%s: Error %d while putting card into sleep", | |
1198 | mmc_hostname(host), err); | |
1199 | } | |
1200 | ||
1201 | return err; | |
1202 | } | |
1203 | ||
1204 | static int mmc_awake(struct mmc_host *host) | |
1205 | { | |
1206 | struct mmc_card *card = host->card; | |
1207 | int err = -ENOSYS; | |
1208 | ||
1209 | if (card && card->ext_csd.rev >= 3) { | |
1210 | err = mmc_card_sleepawake(host, 0); | |
1211 | if (err < 0) | |
1212 | pr_debug("%s: Error %d while awaking sleeping card", | |
1213 | mmc_hostname(host), err); | |
1214 | } | |
1215 | ||
1216 | return err; | |
1217 | } | |
1218 | ||
6abaa0c9 | 1219 | static const struct mmc_bus_ops mmc_ops = { |
b1ebe384 JL |
1220 | .awake = mmc_awake, |
1221 | .sleep = mmc_sleep, | |
9feae246 AH |
1222 | .remove = mmc_remove, |
1223 | .detect = mmc_detect, | |
1224 | .suspend = NULL, | |
1225 | .resume = NULL, | |
eae1aeee | 1226 | .power_restore = mmc_power_restore, |
9feae246 AH |
1227 | }; |
1228 | ||
1229 | static const struct mmc_bus_ops mmc_ops_unsafe = { | |
b1ebe384 JL |
1230 | .awake = mmc_awake, |
1231 | .sleep = mmc_sleep, | |
6abaa0c9 PO |
1232 | .remove = mmc_remove, |
1233 | .detect = mmc_detect, | |
1234 | .suspend = mmc_suspend, | |
1235 | .resume = mmc_resume, | |
eae1aeee | 1236 | .power_restore = mmc_power_restore, |
6abaa0c9 PO |
1237 | }; |
1238 | ||
9feae246 AH |
1239 | static void mmc_attach_bus_ops(struct mmc_host *host) |
1240 | { | |
1241 | const struct mmc_bus_ops *bus_ops; | |
1242 | ||
71d7d3d1 | 1243 | if (!mmc_card_is_removable(host)) |
9feae246 AH |
1244 | bus_ops = &mmc_ops_unsafe; |
1245 | else | |
1246 | bus_ops = &mmc_ops; | |
1247 | mmc_attach_bus(host, bus_ops); | |
1248 | } | |
1249 | ||
6abaa0c9 PO |
1250 | /* |
1251 | * Starting point for MMC card init. | |
1252 | */ | |
807e8e40 | 1253 | int mmc_attach_mmc(struct mmc_host *host) |
6abaa0c9 PO |
1254 | { |
1255 | int err; | |
807e8e40 | 1256 | u32 ocr; |
6abaa0c9 PO |
1257 | |
1258 | BUG_ON(!host); | |
d84075c8 | 1259 | WARN_ON(!host->claimed); |
6abaa0c9 | 1260 | |
44669034 SNX |
1261 | /* Set correct bus mode for MMC before attempting attach */ |
1262 | if (!mmc_host_is_spi(host)) | |
1263 | mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); | |
1264 | ||
807e8e40 AR |
1265 | err = mmc_send_op_cond(host, 0, &ocr); |
1266 | if (err) | |
1267 | return err; | |
1268 | ||
9feae246 | 1269 | mmc_attach_bus_ops(host); |
8f230f45 TI |
1270 | if (host->ocr_avail_mmc) |
1271 | host->ocr_avail = host->ocr_avail_mmc; | |
6abaa0c9 | 1272 | |
af517150 DB |
1273 | /* |
1274 | * We need to get OCR a different way for SPI. | |
1275 | */ | |
1276 | if (mmc_host_is_spi(host)) { | |
1277 | err = mmc_spi_read_ocr(host, 1, &ocr); | |
1278 | if (err) | |
1279 | goto err; | |
1280 | } | |
1281 | ||
6abaa0c9 PO |
1282 | /* |
1283 | * Sanity check the voltages that the card claims to | |
1284 | * support. | |
1285 | */ | |
1286 | if (ocr & 0x7F) { | |
a3c76eb9 | 1287 | pr_warning("%s: card claims to support voltages " |
6abaa0c9 PO |
1288 | "below the defined range. These will be ignored.\n", |
1289 | mmc_hostname(host)); | |
1290 | ocr &= ~0x7F; | |
1291 | } | |
1292 | ||
1293 | host->ocr = mmc_select_voltage(host, ocr); | |
1294 | ||
1295 | /* | |
1296 | * Can we support the voltage of the card? | |
1297 | */ | |
109b5bed PO |
1298 | if (!host->ocr) { |
1299 | err = -EINVAL; | |
6abaa0c9 | 1300 | goto err; |
109b5bed | 1301 | } |
6abaa0c9 PO |
1302 | |
1303 | /* | |
1304 | * Detect and init the card. | |
1305 | */ | |
8c75deae | 1306 | err = mmc_init_card(host, host->ocr, NULL); |
17b0429d | 1307 | if (err) |
6abaa0c9 PO |
1308 | goto err; |
1309 | ||
1310 | mmc_release_host(host); | |
4101c16a | 1311 | err = mmc_add_card(host->card); |
807e8e40 | 1312 | mmc_claim_host(host); |
7ea239d9 | 1313 | if (err) |
2986d0bf | 1314 | goto remove_card; |
7ea239d9 PO |
1315 | |
1316 | return 0; | |
1317 | ||
2986d0bf | 1318 | remove_card: |
807e8e40 | 1319 | mmc_release_host(host); |
6abaa0c9 | 1320 | mmc_remove_card(host->card); |
2986d0bf | 1321 | mmc_claim_host(host); |
807e8e40 | 1322 | host->card = NULL; |
7ea239d9 PO |
1323 | err: |
1324 | mmc_detach_bus(host); | |
7ea239d9 | 1325 | |
a3c76eb9 | 1326 | pr_err("%s: error %d whilst initialising MMC card\n", |
109b5bed PO |
1327 | mmc_hostname(host), err); |
1328 | ||
adf66a0d | 1329 | return err; |
7ea239d9 | 1330 | } |