]>
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> |
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); | |
51e7e8b6 | 99 | card->cid.prv = UNSTUFF_BITS(resp, 48, 8); |
7ea239d9 PO |
100 | card->cid.serial = UNSTUFF_BITS(resp, 16, 32); |
101 | card->cid.month = UNSTUFF_BITS(resp, 12, 4); | |
102 | card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; | |
103 | break; | |
104 | ||
105 | default: | |
a3c76eb9 | 106 | pr_err("%s: card has unknown MMCA version %d\n", |
7ea239d9 | 107 | mmc_hostname(card->host), card->csd.mmca_vsn); |
bd766312 | 108 | return -EINVAL; |
7ea239d9 | 109 | } |
bd766312 PO |
110 | |
111 | return 0; | |
7ea239d9 PO |
112 | } |
113 | ||
dfe86cba AH |
114 | static void mmc_set_erase_size(struct mmc_card *card) |
115 | { | |
116 | if (card->ext_csd.erase_group_def & 1) | |
117 | card->erase_size = card->ext_csd.hc_erase_size; | |
118 | else | |
119 | card->erase_size = card->csd.erase_size; | |
120 | ||
121 | mmc_init_erase(card); | |
122 | } | |
123 | ||
7ea239d9 PO |
124 | /* |
125 | * Given a 128-bit response, decode to our card CSD structure. | |
126 | */ | |
bd766312 | 127 | static int mmc_decode_csd(struct mmc_card *card) |
7ea239d9 PO |
128 | { |
129 | struct mmc_csd *csd = &card->csd; | |
dfe86cba | 130 | unsigned int e, m, a, b; |
7ea239d9 PO |
131 | u32 *resp = card->raw_csd; |
132 | ||
133 | /* | |
134 | * We only understand CSD structure v1.1 and v1.2. | |
135 | * v1.2 has extra information in bits 15, 11 and 10. | |
6da24b78 | 136 | * We also support eMMC v4.4 & v4.41. |
7ea239d9 | 137 | */ |
6da24b78 KP |
138 | csd->structure = UNSTUFF_BITS(resp, 126, 2); |
139 | if (csd->structure == 0) { | |
a3c76eb9 | 140 | pr_err("%s: unrecognised CSD structure version %d\n", |
6da24b78 | 141 | mmc_hostname(card->host), csd->structure); |
bd766312 | 142 | return -EINVAL; |
7ea239d9 PO |
143 | } |
144 | ||
145 | csd->mmca_vsn = UNSTUFF_BITS(resp, 122, 4); | |
146 | m = UNSTUFF_BITS(resp, 115, 4); | |
147 | e = UNSTUFF_BITS(resp, 112, 3); | |
148 | csd->tacc_ns = (tacc_exp[e] * tacc_mant[m] + 9) / 10; | |
149 | csd->tacc_clks = UNSTUFF_BITS(resp, 104, 8) * 100; | |
150 | ||
151 | m = UNSTUFF_BITS(resp, 99, 4); | |
152 | e = UNSTUFF_BITS(resp, 96, 3); | |
153 | csd->max_dtr = tran_exp[e] * tran_mant[m]; | |
154 | csd->cmdclass = UNSTUFF_BITS(resp, 84, 12); | |
155 | ||
156 | e = UNSTUFF_BITS(resp, 47, 3); | |
157 | m = UNSTUFF_BITS(resp, 62, 12); | |
158 | csd->capacity = (1 + m) << (e + 2); | |
159 | ||
160 | csd->read_blkbits = UNSTUFF_BITS(resp, 80, 4); | |
161 | csd->read_partial = UNSTUFF_BITS(resp, 79, 1); | |
162 | csd->write_misalign = UNSTUFF_BITS(resp, 78, 1); | |
163 | csd->read_misalign = UNSTUFF_BITS(resp, 77, 1); | |
164 | csd->r2w_factor = UNSTUFF_BITS(resp, 26, 3); | |
165 | csd->write_blkbits = UNSTUFF_BITS(resp, 22, 4); | |
166 | csd->write_partial = UNSTUFF_BITS(resp, 21, 1); | |
bd766312 | 167 | |
dfe86cba AH |
168 | if (csd->write_blkbits >= 9) { |
169 | a = UNSTUFF_BITS(resp, 42, 5); | |
170 | b = UNSTUFF_BITS(resp, 37, 5); | |
171 | csd->erase_size = (a + 1) * (b + 1); | |
172 | csd->erase_size <<= csd->write_blkbits - 9; | |
173 | } | |
174 | ||
bd766312 | 175 | return 0; |
7ea239d9 PO |
176 | } |
177 | ||
178 | /* | |
08ee80cc | 179 | * Read extended CSD. |
7ea239d9 | 180 | */ |
08ee80cc | 181 | static int mmc_get_ext_csd(struct mmc_card *card, u8 **new_ext_csd) |
7ea239d9 PO |
182 | { |
183 | int err; | |
184 | u8 *ext_csd; | |
185 | ||
186 | BUG_ON(!card); | |
08ee80cc PR |
187 | BUG_ON(!new_ext_csd); |
188 | ||
189 | *new_ext_csd = NULL; | |
7ea239d9 | 190 | |
7ea239d9 | 191 | if (card->csd.mmca_vsn < CSD_SPEC_VER_4) |
17b0429d | 192 | return 0; |
7ea239d9 PO |
193 | |
194 | /* | |
195 | * As the ext_csd is so large and mostly unused, we don't store the | |
196 | * raw block in mmc_card. | |
197 | */ | |
198 | ext_csd = kmalloc(512, GFP_KERNEL); | |
199 | if (!ext_csd) { | |
a3c76eb9 | 200 | pr_err("%s: could not allocate a buffer to " |
adf66a0d | 201 | "receive the ext_csd.\n", mmc_hostname(card->host)); |
17b0429d | 202 | return -ENOMEM; |
7ea239d9 PO |
203 | } |
204 | ||
205 | err = mmc_send_ext_csd(card, ext_csd); | |
17b0429d | 206 | if (err) { |
08ee80cc PR |
207 | kfree(ext_csd); |
208 | *new_ext_csd = NULL; | |
209 | ||
d08ebedd WM |
210 | /* If the host or the card can't do the switch, |
211 | * fail more gracefully. */ | |
212 | if ((err != -EINVAL) | |
213 | && (err != -ENOSYS) | |
214 | && (err != -EFAULT)) | |
08ee80cc | 215 | return err; |
adf66a0d | 216 | |
7ea239d9 PO |
217 | /* |
218 | * High capacity cards should have this "magic" size | |
219 | * stored in their CSD. | |
220 | */ | |
221 | if (card->csd.capacity == (4096 * 512)) { | |
a3c76eb9 | 222 | pr_err("%s: unable to read EXT_CSD " |
7ea239d9 PO |
223 | "on a possible high capacity card. " |
224 | "Card will be ignored.\n", | |
225 | mmc_hostname(card->host)); | |
226 | } else { | |
a3c76eb9 | 227 | pr_warning("%s: unable to read " |
7ea239d9 PO |
228 | "EXT_CSD, performance might " |
229 | "suffer.\n", | |
230 | mmc_hostname(card->host)); | |
17b0429d | 231 | err = 0; |
7ea239d9 | 232 | } |
08ee80cc PR |
233 | } else |
234 | *new_ext_csd = ext_csd; | |
adf66a0d | 235 | |
08ee80cc PR |
236 | return err; |
237 | } | |
238 | ||
96cf5f02 SJ |
239 | static void mmc_select_card_type(struct mmc_card *card) |
240 | { | |
241 | struct mmc_host *host = card->host; | |
242 | u8 card_type = card->ext_csd.raw_card_type & EXT_CSD_CARD_TYPE_MASK; | |
5f1a4dd0 | 243 | u32 caps = host->caps, caps2 = host->caps2; |
96cf5f02 SJ |
244 | unsigned int hs_max_dtr = 0; |
245 | ||
246 | if (card_type & EXT_CSD_CARD_TYPE_26) | |
247 | hs_max_dtr = MMC_HIGH_26_MAX_DTR; | |
248 | ||
249 | if (caps & MMC_CAP_MMC_HIGHSPEED && | |
250 | card_type & EXT_CSD_CARD_TYPE_52) | |
251 | hs_max_dtr = MMC_HIGH_52_MAX_DTR; | |
252 | ||
253 | if ((caps & MMC_CAP_1_8V_DDR && | |
254 | card_type & EXT_CSD_CARD_TYPE_DDR_1_8V) || | |
255 | (caps & MMC_CAP_1_2V_DDR && | |
256 | card_type & EXT_CSD_CARD_TYPE_DDR_1_2V)) | |
257 | hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; | |
258 | ||
259 | if ((caps2 & MMC_CAP2_HS200_1_8V_SDR && | |
260 | card_type & EXT_CSD_CARD_TYPE_SDR_1_8V) || | |
261 | (caps2 & MMC_CAP2_HS200_1_2V_SDR && | |
262 | card_type & EXT_CSD_CARD_TYPE_SDR_1_2V)) | |
263 | hs_max_dtr = MMC_HS200_MAX_DTR; | |
264 | ||
265 | card->ext_csd.hs_max_dtr = hs_max_dtr; | |
266 | card->ext_csd.card_type = card_type; | |
267 | } | |
268 | ||
08ee80cc PR |
269 | /* |
270 | * Decode extended CSD. | |
271 | */ | |
272 | static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd) | |
273 | { | |
e0c368d5 NJ |
274 | int err = 0, idx; |
275 | unsigned int part_size; | |
276 | u8 hc_erase_grp_sz = 0, hc_wp_grp_sz = 0; | |
08ee80cc PR |
277 | |
278 | BUG_ON(!card); | |
279 | ||
280 | if (!ext_csd) | |
281 | return 0; | |
7ea239d9 | 282 | |
6da24b78 | 283 | /* Version is coded in the CSD_STRUCTURE byte in the EXT_CSD register */ |
f39b2dd9 | 284 | card->ext_csd.raw_ext_csd_structure = ext_csd[EXT_CSD_STRUCTURE]; |
6da24b78 | 285 | if (card->csd.structure == 3) { |
f39b2dd9 | 286 | if (card->ext_csd.raw_ext_csd_structure > 2) { |
a3c76eb9 | 287 | pr_err("%s: unrecognised EXT_CSD structure " |
6da24b78 | 288 | "version %d\n", mmc_hostname(card->host), |
f39b2dd9 | 289 | card->ext_csd.raw_ext_csd_structure); |
6da24b78 KP |
290 | err = -EINVAL; |
291 | goto out; | |
292 | } | |
293 | } | |
294 | ||
b1ebe384 | 295 | card->ext_csd.rev = ext_csd[EXT_CSD_REV]; |
6636bad8 | 296 | if (card->ext_csd.rev > 7) { |
a3c76eb9 | 297 | pr_err("%s: unrecognised EXT_CSD revision %d\n", |
6da24b78 | 298 | mmc_hostname(card->host), card->ext_csd.rev); |
00cedfa6 FM |
299 | err = -EINVAL; |
300 | goto out; | |
d7604d76 PO |
301 | } |
302 | ||
f39b2dd9 PR |
303 | card->ext_csd.raw_sectors[0] = ext_csd[EXT_CSD_SEC_CNT + 0]; |
304 | card->ext_csd.raw_sectors[1] = ext_csd[EXT_CSD_SEC_CNT + 1]; | |
305 | card->ext_csd.raw_sectors[2] = ext_csd[EXT_CSD_SEC_CNT + 2]; | |
306 | card->ext_csd.raw_sectors[3] = ext_csd[EXT_CSD_SEC_CNT + 3]; | |
b1ebe384 | 307 | if (card->ext_csd.rev >= 2) { |
d7604d76 PO |
308 | card->ext_csd.sectors = |
309 | ext_csd[EXT_CSD_SEC_CNT + 0] << 0 | | |
310 | ext_csd[EXT_CSD_SEC_CNT + 1] << 8 | | |
311 | ext_csd[EXT_CSD_SEC_CNT + 2] << 16 | | |
312 | ext_csd[EXT_CSD_SEC_CNT + 3] << 24; | |
fc8a0985 HP |
313 | |
314 | /* Cards with density > 2GiB are sector addressed */ | |
315 | if (card->ext_csd.sectors > (2u * 1024 * 1024 * 1024) / 512) | |
d7604d76 PO |
316 | mmc_card_set_blockaddr(card); |
317 | } | |
96cf5f02 | 318 | |
f39b2dd9 | 319 | card->ext_csd.raw_card_type = ext_csd[EXT_CSD_CARD_TYPE]; |
96cf5f02 | 320 | mmc_select_card_type(card); |
7ea239d9 | 321 | |
f39b2dd9 PR |
322 | card->ext_csd.raw_s_a_timeout = ext_csd[EXT_CSD_S_A_TIMEOUT]; |
323 | card->ext_csd.raw_erase_timeout_mult = | |
324 | ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; | |
325 | card->ext_csd.raw_hc_erase_grp_size = | |
326 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; | |
b1ebe384 JL |
327 | if (card->ext_csd.rev >= 3) { |
328 | u8 sa_shift = ext_csd[EXT_CSD_S_A_TIMEOUT]; | |
371a689f AW |
329 | card->ext_csd.part_config = ext_csd[EXT_CSD_PART_CONFIG]; |
330 | ||
331 | /* EXT_CSD value is in units of 10ms, but we store in ms */ | |
332 | card->ext_csd.part_time = 10 * ext_csd[EXT_CSD_PART_SWITCH_TIME]; | |
b1ebe384 JL |
333 | |
334 | /* Sleep / awake timeout in 100ns units */ | |
335 | if (sa_shift > 0 && sa_shift <= 0x17) | |
336 | card->ext_csd.sa_timeout = | |
337 | 1 << ext_csd[EXT_CSD_S_A_TIMEOUT]; | |
dfe86cba AH |
338 | card->ext_csd.erase_group_def = |
339 | ext_csd[EXT_CSD_ERASE_GROUP_DEF]; | |
340 | card->ext_csd.hc_erase_timeout = 300 * | |
341 | ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; | |
342 | card->ext_csd.hc_erase_size = | |
343 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] << 10; | |
f4c5522b AW |
344 | |
345 | card->ext_csd.rel_sectors = ext_csd[EXT_CSD_REL_WR_SEC_C]; | |
371a689f AW |
346 | |
347 | /* | |
348 | * There are two boot regions of equal size, defined in | |
349 | * multiples of 128K. | |
350 | */ | |
e0c368d5 NJ |
351 | if (ext_csd[EXT_CSD_BOOT_MULT] && mmc_boot_partition_access(card->host)) { |
352 | for (idx = 0; idx < MMC_NUM_BOOT_PARTITION; idx++) { | |
353 | part_size = ext_csd[EXT_CSD_BOOT_MULT] << 17; | |
354 | mmc_part_add(card, part_size, | |
355 | EXT_CSD_PART_CONFIG_ACC_BOOT0 + idx, | |
add710ea JR |
356 | "boot%d", idx, true, |
357 | MMC_BLK_DATA_AREA_BOOT); | |
e0c368d5 NJ |
358 | } |
359 | } | |
dfe86cba AH |
360 | } |
361 | ||
f39b2dd9 | 362 | card->ext_csd.raw_hc_erase_gap_size = |
dd13b4ed | 363 | ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; |
f39b2dd9 PR |
364 | card->ext_csd.raw_sec_trim_mult = |
365 | ext_csd[EXT_CSD_SEC_TRIM_MULT]; | |
366 | card->ext_csd.raw_sec_erase_mult = | |
367 | ext_csd[EXT_CSD_SEC_ERASE_MULT]; | |
368 | card->ext_csd.raw_sec_feature_support = | |
369 | ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; | |
370 | card->ext_csd.raw_trim_mult = | |
371 | ext_csd[EXT_CSD_TRIM_MULT]; | |
836dc2fe | 372 | card->ext_csd.raw_partition_support = ext_csd[EXT_CSD_PARTITION_SUPPORT]; |
dfe86cba | 373 | if (card->ext_csd.rev >= 4) { |
709de99d CD |
374 | /* |
375 | * Enhanced area feature support -- check whether the eMMC | |
376 | * card has the Enhanced area enabled. If so, export enhanced | |
377 | * area offset and size to user by adding sysfs interface. | |
378 | */ | |
379 | if ((ext_csd[EXT_CSD_PARTITION_SUPPORT] & 0x2) && | |
f39b2dd9 | 380 | (ext_csd[EXT_CSD_PARTITION_ATTRIBUTE] & 0x1)) { |
e0c368d5 | 381 | hc_erase_grp_sz = |
709de99d | 382 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; |
e0c368d5 | 383 | hc_wp_grp_sz = |
709de99d CD |
384 | ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; |
385 | ||
386 | card->ext_csd.enhanced_area_en = 1; | |
387 | /* | |
388 | * calculate the enhanced data area offset, in bytes | |
389 | */ | |
390 | card->ext_csd.enhanced_area_offset = | |
391 | (ext_csd[139] << 24) + (ext_csd[138] << 16) + | |
392 | (ext_csd[137] << 8) + ext_csd[136]; | |
393 | if (mmc_card_blockaddr(card)) | |
394 | card->ext_csd.enhanced_area_offset <<= 9; | |
395 | /* | |
396 | * calculate the enhanced data area size, in kilobytes | |
397 | */ | |
398 | card->ext_csd.enhanced_area_size = | |
399 | (ext_csd[142] << 16) + (ext_csd[141] << 8) + | |
400 | ext_csd[140]; | |
401 | card->ext_csd.enhanced_area_size *= | |
402 | (size_t)(hc_erase_grp_sz * hc_wp_grp_sz); | |
403 | card->ext_csd.enhanced_area_size <<= 9; | |
404 | } else { | |
405 | /* | |
406 | * If the enhanced area is not enabled, disable these | |
407 | * device attributes. | |
408 | */ | |
409 | card->ext_csd.enhanced_area_offset = -EINVAL; | |
410 | card->ext_csd.enhanced_area_size = -EINVAL; | |
411 | } | |
e0c368d5 NJ |
412 | |
413 | /* | |
414 | * General purpose partition feature support -- | |
415 | * If ext_csd has the size of general purpose partitions, | |
416 | * set size, part_cfg, partition name in mmc_part. | |
417 | */ | |
418 | if (ext_csd[EXT_CSD_PARTITION_SUPPORT] & | |
419 | EXT_CSD_PART_SUPPORT_PART_EN) { | |
420 | if (card->ext_csd.enhanced_area_en != 1) { | |
421 | hc_erase_grp_sz = | |
422 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; | |
423 | hc_wp_grp_sz = | |
424 | ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; | |
425 | ||
426 | card->ext_csd.enhanced_area_en = 1; | |
427 | } | |
428 | ||
429 | for (idx = 0; idx < MMC_NUM_GP_PARTITION; idx++) { | |
430 | if (!ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3] && | |
431 | !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] && | |
432 | !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2]) | |
433 | continue; | |
434 | part_size = | |
435 | (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2] | |
436 | << 16) + | |
437 | (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] | |
438 | << 8) + | |
439 | ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3]; | |
440 | part_size *= (size_t)(hc_erase_grp_sz * | |
441 | hc_wp_grp_sz); | |
442 | mmc_part_add(card, part_size << 19, | |
443 | EXT_CSD_PART_CONFIG_ACC_GP0 + idx, | |
add710ea JR |
444 | "gp%d", idx, false, |
445 | MMC_BLK_DATA_AREA_GP); | |
e0c368d5 NJ |
446 | } |
447 | } | |
dfe86cba AH |
448 | card->ext_csd.sec_trim_mult = |
449 | ext_csd[EXT_CSD_SEC_TRIM_MULT]; | |
450 | card->ext_csd.sec_erase_mult = | |
451 | ext_csd[EXT_CSD_SEC_ERASE_MULT]; | |
452 | card->ext_csd.sec_feature_support = | |
453 | ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; | |
454 | card->ext_csd.trim_timeout = 300 * | |
455 | ext_csd[EXT_CSD_TRIM_MULT]; | |
add710ea JR |
456 | |
457 | /* | |
458 | * Note that the call to mmc_part_add above defaults to read | |
459 | * only. If this default assumption is changed, the call must | |
460 | * take into account the value of boot_locked below. | |
461 | */ | |
462 | card->ext_csd.boot_ro_lock = ext_csd[EXT_CSD_BOOT_WP]; | |
463 | card->ext_csd.boot_ro_lockable = true; | |
60443712 FS |
464 | |
465 | /* Save power class values */ | |
466 | card->ext_csd.raw_pwr_cl_52_195 = | |
467 | ext_csd[EXT_CSD_PWR_CL_52_195]; | |
468 | card->ext_csd.raw_pwr_cl_26_195 = | |
469 | ext_csd[EXT_CSD_PWR_CL_26_195]; | |
470 | card->ext_csd.raw_pwr_cl_52_360 = | |
471 | ext_csd[EXT_CSD_PWR_CL_52_360]; | |
472 | card->ext_csd.raw_pwr_cl_26_360 = | |
473 | ext_csd[EXT_CSD_PWR_CL_26_360]; | |
474 | card->ext_csd.raw_pwr_cl_200_195 = | |
475 | ext_csd[EXT_CSD_PWR_CL_200_195]; | |
476 | card->ext_csd.raw_pwr_cl_200_360 = | |
477 | ext_csd[EXT_CSD_PWR_CL_200_360]; | |
478 | card->ext_csd.raw_pwr_cl_ddr_52_195 = | |
479 | ext_csd[EXT_CSD_PWR_CL_DDR_52_195]; | |
480 | card->ext_csd.raw_pwr_cl_ddr_52_360 = | |
481 | ext_csd[EXT_CSD_PWR_CL_DDR_52_360]; | |
b1ebe384 JL |
482 | } |
483 | ||
b2499518 | 484 | if (card->ext_csd.rev >= 5) { |
950d56ac JC |
485 | /* check whether the eMMC card supports BKOPS */ |
486 | if (ext_csd[EXT_CSD_BKOPS_SUPPORT] & 0x1) { | |
487 | card->ext_csd.bkops = 1; | |
488 | card->ext_csd.bkops_en = ext_csd[EXT_CSD_BKOPS_EN]; | |
489 | card->ext_csd.raw_bkops_status = | |
490 | ext_csd[EXT_CSD_BKOPS_STATUS]; | |
491 | if (!card->ext_csd.bkops_en) | |
492 | pr_info("%s: BKOPS_EN bit is not set\n", | |
493 | mmc_hostname(card->host)); | |
494 | } | |
495 | ||
eb0d8f13 JC |
496 | /* check whether the eMMC card supports HPI */ |
497 | if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x1) { | |
498 | card->ext_csd.hpi = 1; | |
499 | if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x2) | |
500 | card->ext_csd.hpi_cmd = MMC_STOP_TRANSMISSION; | |
501 | else | |
502 | card->ext_csd.hpi_cmd = MMC_SEND_STATUS; | |
503 | /* | |
504 | * Indicate the maximum timeout to close | |
505 | * a command interrupted by HPI | |
506 | */ | |
507 | card->ext_csd.out_of_int_time = | |
508 | ext_csd[EXT_CSD_OUT_OF_INTERRUPT_TIME] * 10; | |
509 | } | |
510 | ||
f4c5522b | 511 | card->ext_csd.rel_param = ext_csd[EXT_CSD_WR_REL_PARAM]; |
b2499518 | 512 | card->ext_csd.rst_n_function = ext_csd[EXT_CSD_RST_N_FUNCTION]; |
090d25fe LP |
513 | |
514 | /* | |
515 | * RPMB regions are defined in multiples of 128K. | |
516 | */ | |
517 | card->ext_csd.raw_rpmb_size_mult = ext_csd[EXT_CSD_RPMB_MULT]; | |
d0123cca | 518 | if (ext_csd[EXT_CSD_RPMB_MULT] && mmc_host_cmd23(card->host)) { |
090d25fe LP |
519 | mmc_part_add(card, ext_csd[EXT_CSD_RPMB_MULT] << 17, |
520 | EXT_CSD_PART_CONFIG_ACC_RPMB, | |
521 | "rpmb", 0, false, | |
522 | MMC_BLK_DATA_AREA_RPMB); | |
523 | } | |
b2499518 | 524 | } |
f4c5522b | 525 | |
5238acbe | 526 | card->ext_csd.raw_erased_mem_count = ext_csd[EXT_CSD_ERASED_MEM_CONT]; |
dfe86cba AH |
527 | if (ext_csd[EXT_CSD_ERASED_MEM_CONT]) |
528 | card->erased_byte = 0xFF; | |
529 | else | |
530 | card->erased_byte = 0x0; | |
531 | ||
336c716a | 532 | /* eMMC v4.5 or later */ |
bec8726a | 533 | if (card->ext_csd.rev >= 6) { |
336c716a SJ |
534 | card->ext_csd.feature_support |= MMC_DISCARD_FEATURE; |
535 | ||
b23cf0bd SJ |
536 | card->ext_csd.generic_cmd6_time = 10 * |
537 | ext_csd[EXT_CSD_GENERIC_CMD6_TIME]; | |
bec8726a G |
538 | card->ext_csd.power_off_longtime = 10 * |
539 | ext_csd[EXT_CSD_POWER_OFF_LONG_TIME]; | |
b23cf0bd | 540 | |
336c716a SJ |
541 | card->ext_csd.cache_size = |
542 | ext_csd[EXT_CSD_CACHE_SIZE + 0] << 0 | | |
543 | ext_csd[EXT_CSD_CACHE_SIZE + 1] << 8 | | |
544 | ext_csd[EXT_CSD_CACHE_SIZE + 2] << 16 | | |
545 | ext_csd[EXT_CSD_CACHE_SIZE + 3] << 24; | |
4265900e SD |
546 | |
547 | if (ext_csd[EXT_CSD_DATA_SECTOR_SIZE] == 1) | |
548 | card->ext_csd.data_sector_size = 4096; | |
549 | else | |
550 | card->ext_csd.data_sector_size = 512; | |
551 | ||
552 | if ((ext_csd[EXT_CSD_DATA_TAG_SUPPORT] & 1) && | |
553 | (ext_csd[EXT_CSD_TAG_UNIT_SIZE] <= 8)) { | |
554 | card->ext_csd.data_tag_unit_size = | |
555 | ((unsigned int) 1 << ext_csd[EXT_CSD_TAG_UNIT_SIZE]) * | |
556 | (card->ext_csd.data_sector_size); | |
557 | } else { | |
558 | card->ext_csd.data_tag_unit_size = 0; | |
559 | } | |
abd9ac14 SJ |
560 | |
561 | card->ext_csd.max_packed_writes = | |
562 | ext_csd[EXT_CSD_MAX_PACKED_WRITES]; | |
563 | card->ext_csd.max_packed_reads = | |
564 | ext_csd[EXT_CSD_MAX_PACKED_READS]; | |
a5075eb9 SD |
565 | } else { |
566 | card->ext_csd.data_sector_size = 512; | |
336c716a | 567 | } |
881d1c25 | 568 | |
7ea239d9 | 569 | out: |
08ee80cc PR |
570 | return err; |
571 | } | |
572 | ||
573 | static inline void mmc_free_ext_csd(u8 *ext_csd) | |
574 | { | |
7ea239d9 | 575 | kfree(ext_csd); |
08ee80cc PR |
576 | } |
577 | ||
7ea239d9 | 578 | |
f39b2dd9 | 579 | static int mmc_compare_ext_csds(struct mmc_card *card, unsigned bus_width) |
08ee80cc PR |
580 | { |
581 | u8 *bw_ext_csd; | |
582 | int err; | |
583 | ||
f39b2dd9 PR |
584 | if (bus_width == MMC_BUS_WIDTH_1) |
585 | return 0; | |
586 | ||
08ee80cc | 587 | err = mmc_get_ext_csd(card, &bw_ext_csd); |
08ee80cc | 588 | |
f39b2dd9 | 589 | if (err || bw_ext_csd == NULL) { |
f6f44590 | 590 | err = -EINVAL; |
08ee80cc PR |
591 | goto out; |
592 | } | |
593 | ||
08ee80cc | 594 | /* only compare read only fields */ |
dd13b4ed | 595 | err = !((card->ext_csd.raw_partition_support == |
08ee80cc | 596 | bw_ext_csd[EXT_CSD_PARTITION_SUPPORT]) && |
f39b2dd9 | 597 | (card->ext_csd.raw_erased_mem_count == |
08ee80cc | 598 | bw_ext_csd[EXT_CSD_ERASED_MEM_CONT]) && |
f39b2dd9 | 599 | (card->ext_csd.rev == |
08ee80cc | 600 | bw_ext_csd[EXT_CSD_REV]) && |
f39b2dd9 | 601 | (card->ext_csd.raw_ext_csd_structure == |
08ee80cc | 602 | bw_ext_csd[EXT_CSD_STRUCTURE]) && |
f39b2dd9 | 603 | (card->ext_csd.raw_card_type == |
08ee80cc | 604 | bw_ext_csd[EXT_CSD_CARD_TYPE]) && |
f39b2dd9 | 605 | (card->ext_csd.raw_s_a_timeout == |
08ee80cc | 606 | bw_ext_csd[EXT_CSD_S_A_TIMEOUT]) && |
f39b2dd9 | 607 | (card->ext_csd.raw_hc_erase_gap_size == |
08ee80cc | 608 | bw_ext_csd[EXT_CSD_HC_WP_GRP_SIZE]) && |
f39b2dd9 | 609 | (card->ext_csd.raw_erase_timeout_mult == |
08ee80cc | 610 | bw_ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]) && |
f39b2dd9 | 611 | (card->ext_csd.raw_hc_erase_grp_size == |
08ee80cc | 612 | bw_ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]) && |
f39b2dd9 | 613 | (card->ext_csd.raw_sec_trim_mult == |
08ee80cc | 614 | bw_ext_csd[EXT_CSD_SEC_TRIM_MULT]) && |
f39b2dd9 | 615 | (card->ext_csd.raw_sec_erase_mult == |
08ee80cc | 616 | bw_ext_csd[EXT_CSD_SEC_ERASE_MULT]) && |
f39b2dd9 | 617 | (card->ext_csd.raw_sec_feature_support == |
08ee80cc | 618 | bw_ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]) && |
f39b2dd9 | 619 | (card->ext_csd.raw_trim_mult == |
08ee80cc | 620 | bw_ext_csd[EXT_CSD_TRIM_MULT]) && |
f39b2dd9 PR |
621 | (card->ext_csd.raw_sectors[0] == |
622 | bw_ext_csd[EXT_CSD_SEC_CNT + 0]) && | |
623 | (card->ext_csd.raw_sectors[1] == | |
624 | bw_ext_csd[EXT_CSD_SEC_CNT + 1]) && | |
625 | (card->ext_csd.raw_sectors[2] == | |
626 | bw_ext_csd[EXT_CSD_SEC_CNT + 2]) && | |
627 | (card->ext_csd.raw_sectors[3] == | |
60443712 FS |
628 | bw_ext_csd[EXT_CSD_SEC_CNT + 3]) && |
629 | (card->ext_csd.raw_pwr_cl_52_195 == | |
630 | bw_ext_csd[EXT_CSD_PWR_CL_52_195]) && | |
631 | (card->ext_csd.raw_pwr_cl_26_195 == | |
632 | bw_ext_csd[EXT_CSD_PWR_CL_26_195]) && | |
633 | (card->ext_csd.raw_pwr_cl_52_360 == | |
634 | bw_ext_csd[EXT_CSD_PWR_CL_52_360]) && | |
635 | (card->ext_csd.raw_pwr_cl_26_360 == | |
636 | bw_ext_csd[EXT_CSD_PWR_CL_26_360]) && | |
637 | (card->ext_csd.raw_pwr_cl_200_195 == | |
638 | bw_ext_csd[EXT_CSD_PWR_CL_200_195]) && | |
639 | (card->ext_csd.raw_pwr_cl_200_360 == | |
640 | bw_ext_csd[EXT_CSD_PWR_CL_200_360]) && | |
641 | (card->ext_csd.raw_pwr_cl_ddr_52_195 == | |
642 | bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_195]) && | |
643 | (card->ext_csd.raw_pwr_cl_ddr_52_360 == | |
644 | bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_360])); | |
08ee80cc PR |
645 | if (err) |
646 | err = -EINVAL; | |
647 | ||
648 | out: | |
649 | mmc_free_ext_csd(bw_ext_csd); | |
7ea239d9 PO |
650 | return err; |
651 | } | |
652 | ||
51ec92e2 PO |
653 | MMC_DEV_ATTR(cid, "%08x%08x%08x%08x\n", card->raw_cid[0], card->raw_cid[1], |
654 | card->raw_cid[2], card->raw_cid[3]); | |
655 | MMC_DEV_ATTR(csd, "%08x%08x%08x%08x\n", card->raw_csd[0], card->raw_csd[1], | |
656 | card->raw_csd[2], card->raw_csd[3]); | |
657 | MMC_DEV_ATTR(date, "%02d/%04d\n", card->cid.month, card->cid.year); | |
dfe86cba AH |
658 | MMC_DEV_ATTR(erase_size, "%u\n", card->erase_size << 9); |
659 | MMC_DEV_ATTR(preferred_erase_size, "%u\n", card->pref_erase << 9); | |
51ec92e2 PO |
660 | MMC_DEV_ATTR(fwrev, "0x%x\n", card->cid.fwrev); |
661 | MMC_DEV_ATTR(hwrev, "0x%x\n", card->cid.hwrev); | |
662 | MMC_DEV_ATTR(manfid, "0x%06x\n", card->cid.manfid); | |
663 | MMC_DEV_ATTR(name, "%s\n", card->cid.prod_name); | |
664 | MMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid); | |
51e7e8b6 | 665 | MMC_DEV_ATTR(prv, "0x%x\n", card->cid.prv); |
51ec92e2 | 666 | MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial); |
709de99d CD |
667 | MMC_DEV_ATTR(enhanced_area_offset, "%llu\n", |
668 | card->ext_csd.enhanced_area_offset); | |
669 | MMC_DEV_ATTR(enhanced_area_size, "%u\n", card->ext_csd.enhanced_area_size); | |
188cc042 LP |
670 | MMC_DEV_ATTR(raw_rpmb_size_mult, "%#x\n", card->ext_csd.raw_rpmb_size_mult); |
671 | MMC_DEV_ATTR(rel_sectors, "%#x\n", card->ext_csd.rel_sectors); | |
51ec92e2 PO |
672 | |
673 | static struct attribute *mmc_std_attrs[] = { | |
674 | &dev_attr_cid.attr, | |
675 | &dev_attr_csd.attr, | |
676 | &dev_attr_date.attr, | |
dfe86cba AH |
677 | &dev_attr_erase_size.attr, |
678 | &dev_attr_preferred_erase_size.attr, | |
51ec92e2 PO |
679 | &dev_attr_fwrev.attr, |
680 | &dev_attr_hwrev.attr, | |
681 | &dev_attr_manfid.attr, | |
682 | &dev_attr_name.attr, | |
683 | &dev_attr_oemid.attr, | |
51e7e8b6 | 684 | &dev_attr_prv.attr, |
51ec92e2 | 685 | &dev_attr_serial.attr, |
709de99d CD |
686 | &dev_attr_enhanced_area_offset.attr, |
687 | &dev_attr_enhanced_area_size.attr, | |
188cc042 LP |
688 | &dev_attr_raw_rpmb_size_mult.attr, |
689 | &dev_attr_rel_sectors.attr, | |
51ec92e2 PO |
690 | NULL, |
691 | }; | |
692 | ||
693 | static struct attribute_group mmc_std_attr_group = { | |
694 | .attrs = mmc_std_attrs, | |
695 | }; | |
696 | ||
a4dbd674 | 697 | static const struct attribute_group *mmc_attr_groups[] = { |
51ec92e2 PO |
698 | &mmc_std_attr_group, |
699 | NULL, | |
700 | }; | |
701 | ||
702 | static struct device_type mmc_type = { | |
703 | .groups = mmc_attr_groups, | |
704 | }; | |
705 | ||
b87d8dbf G |
706 | /* |
707 | * Select the PowerClass for the current bus width | |
708 | * If power class is defined for 4/8 bit bus in the | |
709 | * extended CSD register, select it by executing the | |
710 | * mmc_switch command. | |
711 | */ | |
712 | static int mmc_select_powerclass(struct mmc_card *card, | |
60443712 | 713 | unsigned int bus_width) |
b87d8dbf G |
714 | { |
715 | int err = 0; | |
60443712 | 716 | unsigned int pwrclass_val = 0; |
b87d8dbf G |
717 | struct mmc_host *host; |
718 | ||
719 | BUG_ON(!card); | |
720 | ||
721 | host = card->host; | |
722 | BUG_ON(!host); | |
723 | ||
b87d8dbf G |
724 | /* Power class selection is supported for versions >= 4.0 */ |
725 | if (card->csd.mmca_vsn < CSD_SPEC_VER_4) | |
726 | return 0; | |
727 | ||
728 | /* Power class values are defined only for 4/8 bit bus */ | |
729 | if (bus_width == EXT_CSD_BUS_WIDTH_1) | |
730 | return 0; | |
731 | ||
732 | switch (1 << host->ios.vdd) { | |
733 | case MMC_VDD_165_195: | |
734 | if (host->ios.clock <= 26000000) | |
60443712 | 735 | pwrclass_val = card->ext_csd.raw_pwr_cl_26_195; |
b87d8dbf | 736 | else if (host->ios.clock <= 52000000) |
60443712 FS |
737 | pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? |
738 | card->ext_csd.raw_pwr_cl_52_195 : | |
739 | card->ext_csd.raw_pwr_cl_ddr_52_195; | |
b87d8dbf | 740 | else if (host->ios.clock <= 200000000) |
60443712 | 741 | pwrclass_val = card->ext_csd.raw_pwr_cl_200_195; |
b87d8dbf | 742 | break; |
93fc5a47 SJ |
743 | case MMC_VDD_27_28: |
744 | case MMC_VDD_28_29: | |
745 | case MMC_VDD_29_30: | |
746 | case MMC_VDD_30_31: | |
747 | case MMC_VDD_31_32: | |
b87d8dbf G |
748 | case MMC_VDD_32_33: |
749 | case MMC_VDD_33_34: | |
750 | case MMC_VDD_34_35: | |
751 | case MMC_VDD_35_36: | |
752 | if (host->ios.clock <= 26000000) | |
60443712 | 753 | pwrclass_val = card->ext_csd.raw_pwr_cl_26_360; |
b87d8dbf | 754 | else if (host->ios.clock <= 52000000) |
60443712 FS |
755 | pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? |
756 | card->ext_csd.raw_pwr_cl_52_360 : | |
757 | card->ext_csd.raw_pwr_cl_ddr_52_360; | |
b87d8dbf | 758 | else if (host->ios.clock <= 200000000) |
60443712 | 759 | pwrclass_val = card->ext_csd.raw_pwr_cl_200_360; |
b87d8dbf G |
760 | break; |
761 | default: | |
762 | pr_warning("%s: Voltage range not supported " | |
763 | "for power class.\n", mmc_hostname(host)); | |
764 | return -EINVAL; | |
765 | } | |
766 | ||
b87d8dbf G |
767 | if (bus_width & (EXT_CSD_BUS_WIDTH_8 | EXT_CSD_DDR_BUS_WIDTH_8)) |
768 | pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_8BIT_MASK) >> | |
769 | EXT_CSD_PWR_CL_8BIT_SHIFT; | |
770 | else | |
771 | pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_4BIT_MASK) >> | |
772 | EXT_CSD_PWR_CL_4BIT_SHIFT; | |
773 | ||
774 | /* If the power class is different from the default value */ | |
775 | if (pwrclass_val > 0) { | |
776 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
777 | EXT_CSD_POWER_CLASS, | |
778 | pwrclass_val, | |
71fe3eb0 | 779 | card->ext_csd.generic_cmd6_time); |
b87d8dbf G |
780 | } |
781 | ||
782 | return err; | |
783 | } | |
784 | ||
a4924c71 G |
785 | /* |
786 | * Selects the desired buswidth and switch to the HS200 mode | |
787 | * if bus width set without error | |
788 | */ | |
789 | static int mmc_select_hs200(struct mmc_card *card) | |
790 | { | |
10942aa4 | 791 | int idx, err = -EINVAL; |
a4924c71 G |
792 | struct mmc_host *host; |
793 | static unsigned ext_csd_bits[] = { | |
794 | EXT_CSD_BUS_WIDTH_4, | |
795 | EXT_CSD_BUS_WIDTH_8, | |
796 | }; | |
797 | static unsigned bus_widths[] = { | |
798 | MMC_BUS_WIDTH_4, | |
799 | MMC_BUS_WIDTH_8, | |
800 | }; | |
801 | ||
802 | BUG_ON(!card); | |
803 | ||
804 | host = card->host; | |
805 | ||
806 | if (card->ext_csd.card_type & EXT_CSD_CARD_TYPE_SDR_1_2V && | |
10942aa4 | 807 | host->caps2 & MMC_CAP2_HS200_1_2V_SDR) |
567c8903 | 808 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); |
10942aa4 SJ |
809 | |
810 | if (err && card->ext_csd.card_type & EXT_CSD_CARD_TYPE_SDR_1_8V && | |
811 | host->caps2 & MMC_CAP2_HS200_1_8V_SDR) | |
567c8903 | 812 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); |
a4924c71 G |
813 | |
814 | /* If fails try again during next card power cycle */ | |
815 | if (err) | |
816 | goto err; | |
817 | ||
818 | idx = (host->caps & MMC_CAP_8_BIT_DATA) ? 1 : 0; | |
819 | ||
820 | /* | |
821 | * Unlike SD, MMC cards dont have a configuration register to notify | |
822 | * supported bus width. So bus test command should be run to identify | |
823 | * the supported bus width or compare the ext csd values of current | |
824 | * bus width and ext csd values of 1 bit mode read earlier. | |
825 | */ | |
826 | for (; idx >= 0; idx--) { | |
827 | ||
828 | /* | |
829 | * Host is capable of 8bit transfer, then switch | |
830 | * the device to work in 8bit transfer mode. If the | |
831 | * mmc switch command returns error then switch to | |
832 | * 4bit transfer mode. On success set the corresponding | |
833 | * bus width on the host. | |
834 | */ | |
835 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
836 | EXT_CSD_BUS_WIDTH, | |
837 | ext_csd_bits[idx], | |
838 | card->ext_csd.generic_cmd6_time); | |
839 | if (err) | |
840 | continue; | |
841 | ||
842 | mmc_set_bus_width(card->host, bus_widths[idx]); | |
843 | ||
844 | if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST)) | |
845 | err = mmc_compare_ext_csds(card, bus_widths[idx]); | |
846 | else | |
847 | err = mmc_bus_test(card, bus_widths[idx]); | |
848 | if (!err) | |
849 | break; | |
850 | } | |
851 | ||
852 | /* switch to HS200 mode if bus width set successfully */ | |
853 | if (!err) | |
854 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
855 | EXT_CSD_HS_TIMING, 2, 0); | |
856 | err: | |
857 | return err; | |
858 | } | |
859 | ||
7ea239d9 | 860 | /* |
6abaa0c9 PO |
861 | * Handle the detection and initialisation of a card. |
862 | * | |
8769392b | 863 | * In the case of a resume, "oldcard" will contain the card |
6abaa0c9 | 864 | * we're trying to reinitialise. |
7ea239d9 | 865 | */ |
8c75deae | 866 | static int mmc_init_card(struct mmc_host *host, u32 ocr, |
6abaa0c9 | 867 | struct mmc_card *oldcard) |
7ea239d9 PO |
868 | { |
869 | struct mmc_card *card; | |
25d5c699 | 870 | int err, ddr = 0; |
7ea239d9 PO |
871 | u32 cid[4]; |
872 | unsigned int max_dtr; | |
b676f039 | 873 | u32 rocr; |
08ee80cc | 874 | u8 *ext_csd = NULL; |
7ea239d9 PO |
875 | |
876 | BUG_ON(!host); | |
d84075c8 | 877 | WARN_ON(!host->claimed); |
7ea239d9 | 878 | |
44669034 SNX |
879 | /* Set correct bus mode for MMC before attempting init */ |
880 | if (!mmc_host_is_spi(host)) | |
881 | mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); | |
882 | ||
7ea239d9 PO |
883 | /* |
884 | * Since we're changing the OCR value, we seem to | |
885 | * need to tell some cards to go back to the idle | |
886 | * state. We wait 1ms to give cards time to | |
887 | * respond. | |
c3805467 | 888 | * mmc_go_idle is needed for eMMC that are asleep |
7ea239d9 PO |
889 | */ |
890 | mmc_go_idle(host); | |
891 | ||
892 | /* The extra bit indicates that we support high capacity */ | |
b676f039 | 893 | err = mmc_send_op_cond(host, ocr | (1 << 30), &rocr); |
17b0429d | 894 | if (err) |
6abaa0c9 | 895 | goto err; |
7ea239d9 | 896 | |
af517150 DB |
897 | /* |
898 | * For SPI, enable CRC as appropriate. | |
899 | */ | |
900 | if (mmc_host_is_spi(host)) { | |
901 | err = mmc_spi_set_crc(host, use_spi_crc); | |
902 | if (err) | |
903 | goto err; | |
904 | } | |
905 | ||
7ea239d9 PO |
906 | /* |
907 | * Fetch CID from card. | |
908 | */ | |
af517150 DB |
909 | if (mmc_host_is_spi(host)) |
910 | err = mmc_send_cid(host, cid); | |
911 | else | |
912 | err = mmc_all_send_cid(host, cid); | |
17b0429d | 913 | if (err) |
7ea239d9 PO |
914 | goto err; |
915 | ||
6abaa0c9 | 916 | if (oldcard) { |
adf66a0d PO |
917 | if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) { |
918 | err = -ENOENT; | |
6abaa0c9 | 919 | goto err; |
adf66a0d | 920 | } |
6abaa0c9 PO |
921 | |
922 | card = oldcard; | |
923 | } else { | |
924 | /* | |
925 | * Allocate card structure. | |
926 | */ | |
51ec92e2 | 927 | card = mmc_alloc_card(host, &mmc_type); |
adf66a0d PO |
928 | if (IS_ERR(card)) { |
929 | err = PTR_ERR(card); | |
6abaa0c9 | 930 | goto err; |
adf66a0d | 931 | } |
7ea239d9 | 932 | |
6abaa0c9 PO |
933 | card->type = MMC_TYPE_MMC; |
934 | card->rca = 1; | |
935 | memcpy(card->raw_cid, cid, sizeof(card->raw_cid)); | |
936 | } | |
7ea239d9 PO |
937 | |
938 | /* | |
af517150 | 939 | * For native busses: set card RCA and quit open drain mode. |
7ea239d9 | 940 | */ |
af517150 DB |
941 | if (!mmc_host_is_spi(host)) { |
942 | err = mmc_set_relative_addr(card); | |
943 | if (err) | |
944 | goto free_card; | |
7ea239d9 | 945 | |
af517150 DB |
946 | mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL); |
947 | } | |
7ea239d9 | 948 | |
6abaa0c9 PO |
949 | if (!oldcard) { |
950 | /* | |
951 | * Fetch CSD from card. | |
952 | */ | |
953 | err = mmc_send_csd(card, card->raw_csd); | |
17b0429d | 954 | if (err) |
6abaa0c9 | 955 | goto free_card; |
7ea239d9 | 956 | |
bd766312 | 957 | err = mmc_decode_csd(card); |
adf66a0d | 958 | if (err) |
bd766312 PO |
959 | goto free_card; |
960 | err = mmc_decode_cid(card); | |
adf66a0d | 961 | if (err) |
bd766312 | 962 | goto free_card; |
6abaa0c9 | 963 | } |
7ea239d9 PO |
964 | |
965 | /* | |
89a73cf5 | 966 | * Select card, as all following commands rely on that. |
7ea239d9 | 967 | */ |
af517150 DB |
968 | if (!mmc_host_is_spi(host)) { |
969 | err = mmc_select_card(card); | |
970 | if (err) | |
971 | goto free_card; | |
972 | } | |
7ea239d9 | 973 | |
6abaa0c9 PO |
974 | if (!oldcard) { |
975 | /* | |
af517150 | 976 | * Fetch and process extended CSD. |
6abaa0c9 | 977 | */ |
08ee80cc PR |
978 | |
979 | err = mmc_get_ext_csd(card, &ext_csd); | |
980 | if (err) | |
981 | goto free_card; | |
982 | err = mmc_read_ext_csd(card, ext_csd); | |
17b0429d | 983 | if (err) |
6abaa0c9 | 984 | goto free_card; |
b676f039 PR |
985 | |
986 | /* If doing byte addressing, check if required to do sector | |
987 | * addressing. Handle the case of <2GB cards needing sector | |
988 | * addressing. See section 8.1 JEDEC Standard JED84-A441; | |
989 | * ocr register has bit 30 set for sector addressing. | |
990 | */ | |
991 | if (!(mmc_card_blockaddr(card)) && (rocr & (1<<30))) | |
992 | mmc_card_set_blockaddr(card); | |
993 | ||
dfe86cba AH |
994 | /* Erase size depends on CSD and Extended CSD */ |
995 | mmc_set_erase_size(card); | |
6abaa0c9 | 996 | } |
7ea239d9 | 997 | |
709de99d CD |
998 | /* |
999 | * If enhanced_area_en is TRUE, host needs to enable ERASE_GRP_DEF | |
25985edc | 1000 | * bit. This bit will be lost every time after a reset or power off. |
709de99d | 1001 | */ |
83bb24aa AH |
1002 | if (card->ext_csd.enhanced_area_en || |
1003 | (card->ext_csd.rev >= 3 && (host->caps2 & MMC_CAP2_HC_ERASE_SZ))) { | |
709de99d | 1004 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
b23cf0bd SJ |
1005 | EXT_CSD_ERASE_GROUP_DEF, 1, |
1006 | card->ext_csd.generic_cmd6_time); | |
709de99d CD |
1007 | |
1008 | if (err && err != -EBADMSG) | |
1009 | goto free_card; | |
1010 | ||
1011 | if (err) { | |
1012 | err = 0; | |
1013 | /* | |
1014 | * Just disable enhanced area off & sz | |
1015 | * will try to enable ERASE_GROUP_DEF | |
1016 | * during next time reinit | |
1017 | */ | |
1018 | card->ext_csd.enhanced_area_offset = -EINVAL; | |
1019 | card->ext_csd.enhanced_area_size = -EINVAL; | |
1020 | } else { | |
1021 | card->ext_csd.erase_group_def = 1; | |
1022 | /* | |
1023 | * enable ERASE_GRP_DEF successfully. | |
1024 | * This will affect the erase size, so | |
1025 | * here need to reset erase size | |
1026 | */ | |
1027 | mmc_set_erase_size(card); | |
1028 | } | |
1029 | } | |
1030 | ||
41e2a489 PR |
1031 | /* |
1032 | * Ensure eMMC user default partition is enabled | |
1033 | */ | |
371a689f AW |
1034 | if (card->ext_csd.part_config & EXT_CSD_PART_CONFIG_ACC_MASK) { |
1035 | card->ext_csd.part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK; | |
1036 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONFIG, | |
1037 | card->ext_csd.part_config, | |
1038 | card->ext_csd.part_time); | |
1039 | if (err && err != -EBADMSG) | |
1040 | goto free_card; | |
41e2a489 PR |
1041 | } |
1042 | ||
bec8726a | 1043 | /* |
43235679 | 1044 | * Enable power_off_notification byte in the ext_csd register |
bec8726a | 1045 | */ |
43235679 | 1046 | if (card->ext_csd.rev >= 6) { |
bec8726a G |
1047 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
1048 | EXT_CSD_POWER_OFF_NOTIFICATION, | |
1049 | EXT_CSD_POWER_ON, | |
1050 | card->ext_csd.generic_cmd6_time); | |
1051 | if (err && err != -EBADMSG) | |
1052 | goto free_card; | |
bec8726a | 1053 | |
96a85d54 G |
1054 | /* |
1055 | * The err can be -EBADMSG or 0, | |
1056 | * so check for success and update the flag | |
1057 | */ | |
1058 | if (!err) | |
e6c08586 | 1059 | card->ext_csd.power_off_notification = EXT_CSD_POWER_ON; |
96a85d54 | 1060 | } |
bec8726a | 1061 | |
89a73cf5 PO |
1062 | /* |
1063 | * Activate high speed (if supported) | |
1064 | */ | |
a4924c71 G |
1065 | if (card->ext_csd.hs_max_dtr != 0) { |
1066 | err = 0; | |
1067 | if (card->ext_csd.hs_max_dtr > 52000000 && | |
1068 | host->caps2 & MMC_CAP2_HS200) | |
1069 | err = mmc_select_hs200(card); | |
1070 | else if (host->caps & MMC_CAP_MMC_HIGHSPEED) | |
1071 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
7488e924 G |
1072 | EXT_CSD_HS_TIMING, 1, |
1073 | card->ext_csd.generic_cmd6_time); | |
a4924c71 | 1074 | |
ef0b27d4 | 1075 | if (err && err != -EBADMSG) |
89a73cf5 PO |
1076 | goto free_card; |
1077 | ||
ef0b27d4 | 1078 | if (err) { |
a3c76eb9 | 1079 | pr_warning("%s: switch to highspeed failed\n", |
ef0b27d4 AH |
1080 | mmc_hostname(card->host)); |
1081 | err = 0; | |
1082 | } else { | |
a4924c71 G |
1083 | if (card->ext_csd.hs_max_dtr > 52000000 && |
1084 | host->caps2 & MMC_CAP2_HS200) { | |
1085 | mmc_card_set_hs200(card); | |
1086 | mmc_set_timing(card->host, | |
1087 | MMC_TIMING_MMC_HS200); | |
1088 | } else { | |
1089 | mmc_card_set_highspeed(card); | |
1090 | mmc_set_timing(card->host, MMC_TIMING_MMC_HS); | |
1091 | } | |
ef0b27d4 | 1092 | } |
89a73cf5 PO |
1093 | } |
1094 | ||
7ea239d9 PO |
1095 | /* |
1096 | * Compute bus speed. | |
1097 | */ | |
1098 | max_dtr = (unsigned int)-1; | |
1099 | ||
a4924c71 | 1100 | if (mmc_card_highspeed(card) || mmc_card_hs200(card)) { |
7ea239d9 PO |
1101 | if (max_dtr > card->ext_csd.hs_max_dtr) |
1102 | max_dtr = card->ext_csd.hs_max_dtr; | |
ccb52a00 AC |
1103 | if (mmc_card_highspeed(card) && (max_dtr > 52000000)) |
1104 | max_dtr = 52000000; | |
7ea239d9 PO |
1105 | } else if (max_dtr > card->csd.max_dtr) { |
1106 | max_dtr = card->csd.max_dtr; | |
1107 | } | |
1108 | ||
1109 | mmc_set_clock(host, max_dtr); | |
1110 | ||
dfc13e84 | 1111 | /* |
0f8d8ea6 | 1112 | * Indicate DDR mode (if supported). |
dfc13e84 HP |
1113 | */ |
1114 | if (mmc_card_highspeed(card)) { | |
1115 | if ((card->ext_csd.card_type & EXT_CSD_CARD_TYPE_DDR_1_8V) | |
4c4cb171 PR |
1116 | && ((host->caps & (MMC_CAP_1_8V_DDR | |
1117 | MMC_CAP_UHS_DDR50)) | |
1118 | == (MMC_CAP_1_8V_DDR | MMC_CAP_UHS_DDR50))) | |
49e3b5a4 | 1119 | ddr = MMC_1_8V_DDR_MODE; |
dfc13e84 | 1120 | else if ((card->ext_csd.card_type & EXT_CSD_CARD_TYPE_DDR_1_2V) |
4c4cb171 PR |
1121 | && ((host->caps & (MMC_CAP_1_2V_DDR | |
1122 | MMC_CAP_UHS_DDR50)) | |
1123 | == (MMC_CAP_1_2V_DDR | MMC_CAP_UHS_DDR50))) | |
49e3b5a4 | 1124 | ddr = MMC_1_2V_DDR_MODE; |
dfc13e84 HP |
1125 | } |
1126 | ||
a4924c71 G |
1127 | /* |
1128 | * Indicate HS200 SDR mode (if supported). | |
1129 | */ | |
1130 | if (mmc_card_hs200(card)) { | |
1131 | u32 ext_csd_bits; | |
1132 | u32 bus_width = card->host->ios.bus_width; | |
1133 | ||
1134 | /* | |
1135 | * For devices supporting HS200 mode, the bus width has | |
1136 | * to be set before executing the tuning function. If | |
1137 | * set before tuning, then device will respond with CRC | |
1138 | * errors for responses on CMD line. So for HS200 the | |
1139 | * sequence will be | |
1140 | * 1. set bus width 4bit / 8 bit (1 bit not supported) | |
1141 | * 2. switch to HS200 mode | |
1142 | * 3. set the clock to > 52Mhz <=200MHz and | |
1143 | * 4. execute tuning for HS200 | |
1144 | */ | |
1145 | if ((host->caps2 & MMC_CAP2_HS200) && | |
52d0974e SJ |
1146 | card->host->ops->execute_tuning) { |
1147 | mmc_host_clk_hold(card->host); | |
a4924c71 G |
1148 | err = card->host->ops->execute_tuning(card->host, |
1149 | MMC_SEND_TUNING_BLOCK_HS200); | |
52d0974e SJ |
1150 | mmc_host_clk_release(card->host); |
1151 | } | |
a4924c71 G |
1152 | if (err) { |
1153 | pr_warning("%s: tuning execution failed\n", | |
1154 | mmc_hostname(card->host)); | |
1155 | goto err; | |
1156 | } | |
1157 | ||
1158 | ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? | |
1159 | EXT_CSD_BUS_WIDTH_8 : EXT_CSD_BUS_WIDTH_4; | |
60443712 | 1160 | err = mmc_select_powerclass(card, ext_csd_bits); |
93fc5a47 | 1161 | if (err) |
87f761b6 V |
1162 | pr_warning("%s: power class selection to bus width %d" |
1163 | " failed\n", mmc_hostname(card->host), | |
1164 | 1 << bus_width); | |
a4924c71 G |
1165 | } |
1166 | ||
89a73cf5 | 1167 | /* |
0f8d8ea6 | 1168 | * Activate wide bus and DDR (if supported). |
89a73cf5 | 1169 | */ |
a4924c71 | 1170 | if (!mmc_card_hs200(card) && |
7488e924 | 1171 | (card->csd.mmca_vsn >= CSD_SPEC_VER_4) && |
b30f8af3 | 1172 | (host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) { |
22113efd AL |
1173 | static unsigned ext_csd_bits[][2] = { |
1174 | { EXT_CSD_BUS_WIDTH_8, EXT_CSD_DDR_BUS_WIDTH_8 }, | |
1175 | { EXT_CSD_BUS_WIDTH_4, EXT_CSD_DDR_BUS_WIDTH_4 }, | |
1176 | { EXT_CSD_BUS_WIDTH_1, EXT_CSD_BUS_WIDTH_1 }, | |
1177 | }; | |
1178 | static unsigned bus_widths[] = { | |
1179 | MMC_BUS_WIDTH_8, | |
1180 | MMC_BUS_WIDTH_4, | |
1181 | MMC_BUS_WIDTH_1 | |
1182 | }; | |
1183 | unsigned idx, bus_width = 0; | |
1184 | ||
1185 | if (host->caps & MMC_CAP_8_BIT_DATA) | |
1186 | idx = 0; | |
1187 | else | |
1188 | idx = 1; | |
1189 | for (; idx < ARRAY_SIZE(bus_widths); idx++) { | |
1190 | bus_width = bus_widths[idx]; | |
1191 | if (bus_width == MMC_BUS_WIDTH_1) | |
1192 | ddr = 0; /* no DDR for 1-bit width */ | |
60443712 | 1193 | err = mmc_select_powerclass(card, ext_csd_bits[idx][0]); |
b87d8dbf | 1194 | if (err) |
87f761b6 V |
1195 | pr_warning("%s: power class selection to " |
1196 | "bus width %d failed\n", | |
1197 | mmc_hostname(card->host), | |
1198 | 1 << bus_width); | |
b87d8dbf | 1199 | |
22113efd AL |
1200 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
1201 | EXT_CSD_BUS_WIDTH, | |
d3a8d95d | 1202 | ext_csd_bits[idx][0], |
b23cf0bd | 1203 | card->ext_csd.generic_cmd6_time); |
22113efd | 1204 | if (!err) { |
4c4cb171 | 1205 | mmc_set_bus_width(card->host, bus_width); |
08ee80cc | 1206 | |
22113efd AL |
1207 | /* |
1208 | * If controller can't handle bus width test, | |
08ee80cc PR |
1209 | * compare ext_csd previously read in 1 bit mode |
1210 | * against ext_csd at new bus width | |
22113efd AL |
1211 | */ |
1212 | if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST)) | |
08ee80cc | 1213 | err = mmc_compare_ext_csds(card, |
08ee80cc PR |
1214 | bus_width); |
1215 | else | |
1216 | err = mmc_bus_test(card, bus_width); | |
22113efd AL |
1217 | if (!err) |
1218 | break; | |
1219 | } | |
b30f8af3 JL |
1220 | } |
1221 | ||
22113efd | 1222 | if (!err && ddr) { |
60443712 | 1223 | err = mmc_select_powerclass(card, ext_csd_bits[idx][1]); |
b87d8dbf | 1224 | if (err) |
87f761b6 V |
1225 | pr_warning("%s: power class selection to " |
1226 | "bus width %d ddr %d failed\n", | |
1227 | mmc_hostname(card->host), | |
1228 | 1 << bus_width, ddr); | |
b87d8dbf | 1229 | |
22113efd | 1230 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
d3a8d95d AW |
1231 | EXT_CSD_BUS_WIDTH, |
1232 | ext_csd_bits[idx][1], | |
b23cf0bd | 1233 | card->ext_csd.generic_cmd6_time); |
22113efd | 1234 | } |
ef0b27d4 | 1235 | if (err) { |
a3c76eb9 | 1236 | pr_warning("%s: switch to bus width %d ddr %d " |
22113efd AL |
1237 | "failed\n", mmc_hostname(card->host), |
1238 | 1 << bus_width, ddr); | |
1239 | goto free_card; | |
1240 | } else if (ddr) { | |
4c4cb171 PR |
1241 | /* |
1242 | * eMMC cards can support 3.3V to 1.2V i/o (vccq) | |
1243 | * signaling. | |
1244 | * | |
1245 | * EXT_CSD_CARD_TYPE_DDR_1_8V means 3.3V or 1.8V vccq. | |
1246 | * | |
1247 | * 1.8V vccq at 3.3V core voltage (vcc) is not required | |
1248 | * in the JEDEC spec for DDR. | |
1249 | * | |
1250 | * Do not force change in vccq since we are obviously | |
1251 | * working and no change to vccq is needed. | |
1252 | * | |
1253 | * WARNING: eMMC rules are NOT the same as SD DDR | |
1254 | */ | |
913047e9 | 1255 | if (ddr == MMC_1_2V_DDR_MODE) { |
567c8903 JR |
1256 | err = __mmc_set_signal_voltage(host, |
1257 | MMC_SIGNAL_VOLTAGE_120); | |
4c4cb171 PR |
1258 | if (err) |
1259 | goto err; | |
1260 | } | |
22113efd | 1261 | mmc_card_set_ddr_mode(card); |
4c4cb171 PR |
1262 | mmc_set_timing(card->host, MMC_TIMING_UHS_DDR50); |
1263 | mmc_set_bus_width(card->host, bus_width); | |
ef0b27d4 | 1264 | } |
89a73cf5 PO |
1265 | } |
1266 | ||
52d0974e SJ |
1267 | /* |
1268 | * Enable HPI feature (if supported) | |
1269 | */ | |
1270 | if (card->ext_csd.hpi) { | |
1271 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1272 | EXT_CSD_HPI_MGMT, 1, | |
1273 | card->ext_csd.generic_cmd6_time); | |
1274 | if (err && err != -EBADMSG) | |
1275 | goto free_card; | |
1276 | if (err) { | |
1277 | pr_warning("%s: Enabling HPI failed\n", | |
1278 | mmc_hostname(card->host)); | |
1279 | err = 0; | |
1280 | } else | |
1281 | card->ext_csd.hpi_en = 1; | |
1282 | } | |
1283 | ||
881d1c25 SJ |
1284 | /* |
1285 | * If cache size is higher than 0, this indicates | |
1286 | * the existence of cache and it can be turned on. | |
1287 | */ | |
1288 | if ((host->caps2 & MMC_CAP2_CACHE_CTRL) && | |
1289 | card->ext_csd.cache_size > 0) { | |
1290 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
8bc0678b SJ |
1291 | EXT_CSD_CACHE_CTRL, 1, |
1292 | card->ext_csd.generic_cmd6_time); | |
881d1c25 SJ |
1293 | if (err && err != -EBADMSG) |
1294 | goto free_card; | |
1295 | ||
1296 | /* | |
1297 | * Only if no error, cache is turned on successfully. | |
1298 | */ | |
8bc0678b SJ |
1299 | if (err) { |
1300 | pr_warning("%s: Cache is supported, " | |
1301 | "but failed to turn on (%d)\n", | |
1302 | mmc_hostname(card->host), err); | |
1303 | card->ext_csd.cache_ctrl = 0; | |
1304 | err = 0; | |
1305 | } else { | |
1306 | card->ext_csd.cache_ctrl = 1; | |
1307 | } | |
881d1c25 SJ |
1308 | } |
1309 | ||
abd9ac14 SJ |
1310 | /* |
1311 | * The mandatory minimum values are defined for packed command. | |
1312 | * read: 5, write: 3 | |
1313 | */ | |
1314 | if (card->ext_csd.max_packed_writes >= 3 && | |
1315 | card->ext_csd.max_packed_reads >= 5 && | |
1316 | host->caps2 & MMC_CAP2_PACKED_CMD) { | |
1317 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1318 | EXT_CSD_EXP_EVENTS_CTRL, | |
1319 | EXT_CSD_PACKED_EVENT_EN, | |
1320 | card->ext_csd.generic_cmd6_time); | |
1321 | if (err && err != -EBADMSG) | |
1322 | goto free_card; | |
1323 | if (err) { | |
1324 | pr_warn("%s: Enabling packed event failed\n", | |
1325 | mmc_hostname(card->host)); | |
1326 | card->ext_csd.packed_event_en = 0; | |
1327 | err = 0; | |
1328 | } else { | |
1329 | card->ext_csd.packed_event_en = 1; | |
1330 | } | |
1331 | } | |
1332 | ||
6abaa0c9 PO |
1333 | if (!oldcard) |
1334 | host->card = card; | |
1335 | ||
08ee80cc | 1336 | mmc_free_ext_csd(ext_csd); |
17b0429d | 1337 | return 0; |
6abaa0c9 PO |
1338 | |
1339 | free_card: | |
1340 | if (!oldcard) | |
1341 | mmc_remove_card(card); | |
1342 | err: | |
08ee80cc | 1343 | mmc_free_ext_csd(ext_csd); |
6abaa0c9 | 1344 | |
adf66a0d | 1345 | return err; |
6abaa0c9 PO |
1346 | } |
1347 | ||
07a68216 UH |
1348 | static int mmc_can_sleep(struct mmc_card *card) |
1349 | { | |
1350 | return (card && card->ext_csd.rev >= 3); | |
1351 | } | |
1352 | ||
1353 | static int mmc_sleep(struct mmc_host *host) | |
1354 | { | |
1355 | struct mmc_command cmd = {0}; | |
1356 | struct mmc_card *card = host->card; | |
1357 | int err; | |
1358 | ||
1359 | if (host->caps2 & MMC_CAP2_NO_SLEEP_CMD) | |
1360 | return 0; | |
1361 | ||
1362 | err = mmc_deselect_cards(host); | |
1363 | if (err) | |
1364 | return err; | |
1365 | ||
1366 | cmd.opcode = MMC_SLEEP_AWAKE; | |
1367 | cmd.arg = card->rca << 16; | |
1368 | cmd.arg |= 1 << 15; | |
1369 | ||
1370 | cmd.flags = MMC_RSP_R1B | MMC_CMD_AC; | |
1371 | err = mmc_wait_for_cmd(host, &cmd, 0); | |
1372 | if (err) | |
1373 | return err; | |
1374 | ||
1375 | /* | |
1376 | * If the host does not wait while the card signals busy, then we will | |
1377 | * will have to wait the sleep/awake timeout. Note, we cannot use the | |
1378 | * SEND_STATUS command to poll the status because that command (and most | |
1379 | * others) is invalid while the card sleeps. | |
1380 | */ | |
1381 | if (!(host->caps & MMC_CAP_WAIT_WHILE_BUSY)) | |
1382 | mmc_delay(DIV_ROUND_UP(card->ext_csd.sa_timeout, 10000)); | |
1383 | ||
1384 | return err; | |
1385 | } | |
1386 | ||
e6c08586 UH |
1387 | static int mmc_can_poweroff_notify(const struct mmc_card *card) |
1388 | { | |
1389 | return card && | |
1390 | mmc_card_mmc(card) && | |
1391 | (card->ext_csd.power_off_notification == EXT_CSD_POWER_ON); | |
1392 | } | |
1393 | ||
1394 | static int mmc_poweroff_notify(struct mmc_card *card, unsigned int notify_type) | |
1395 | { | |
1396 | unsigned int timeout = card->ext_csd.generic_cmd6_time; | |
1397 | int err; | |
1398 | ||
1399 | /* Use EXT_CSD_POWER_OFF_SHORT as default notification type. */ | |
1400 | if (notify_type == EXT_CSD_POWER_OFF_LONG) | |
1401 | timeout = card->ext_csd.power_off_longtime; | |
1402 | ||
1403 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1404 | EXT_CSD_POWER_OFF_NOTIFICATION, | |
1405 | notify_type, timeout); | |
1406 | if (err) | |
1407 | pr_err("%s: Power Off Notification timed out, %u\n", | |
1408 | mmc_hostname(card->host), timeout); | |
1409 | ||
1410 | /* Disable the power off notification after the switch operation. */ | |
1411 | card->ext_csd.power_off_notification = EXT_CSD_NO_POWER_NOTIFICATION; | |
1412 | ||
1413 | return err; | |
1414 | } | |
1415 | ||
6abaa0c9 PO |
1416 | /* |
1417 | * Host is being removed. Free up the current card. | |
1418 | */ | |
1419 | static void mmc_remove(struct mmc_host *host) | |
1420 | { | |
1421 | BUG_ON(!host); | |
1422 | BUG_ON(!host->card); | |
1423 | ||
1424 | mmc_remove_card(host->card); | |
1425 | host->card = NULL; | |
1426 | } | |
1427 | ||
d3049504 AH |
1428 | /* |
1429 | * Card detection - card is alive. | |
1430 | */ | |
1431 | static int mmc_alive(struct mmc_host *host) | |
1432 | { | |
1433 | return mmc_send_status(host->card, NULL); | |
1434 | } | |
1435 | ||
6abaa0c9 PO |
1436 | /* |
1437 | * Card detection callback from host. | |
1438 | */ | |
1439 | static void mmc_detect(struct mmc_host *host) | |
1440 | { | |
1441 | int err; | |
1442 | ||
1443 | BUG_ON(!host); | |
1444 | BUG_ON(!host->card); | |
1445 | ||
e94cfef6 | 1446 | mmc_get_card(host->card); |
6abaa0c9 PO |
1447 | |
1448 | /* | |
1449 | * Just check if our card has been removed. | |
1450 | */ | |
d3049504 | 1451 | err = _mmc_detect_card_removed(host); |
6abaa0c9 | 1452 | |
e94cfef6 | 1453 | mmc_put_card(host->card); |
6abaa0c9 | 1454 | |
17b0429d | 1455 | if (err) { |
4101c16a | 1456 | mmc_remove(host); |
6abaa0c9 PO |
1457 | |
1458 | mmc_claim_host(host); | |
1459 | mmc_detach_bus(host); | |
7f7e4129 | 1460 | mmc_power_off(host); |
6abaa0c9 PO |
1461 | mmc_release_host(host); |
1462 | } | |
1463 | } | |
1464 | ||
03d071fc | 1465 | static int _mmc_suspend(struct mmc_host *host, bool is_suspend) |
6abaa0c9 | 1466 | { |
c3805467 | 1467 | int err = 0; |
03d071fc UH |
1468 | unsigned int notify_type = is_suspend ? EXT_CSD_POWER_OFF_SHORT : |
1469 | EXT_CSD_POWER_OFF_LONG; | |
c3805467 | 1470 | |
6abaa0c9 PO |
1471 | BUG_ON(!host); |
1472 | BUG_ON(!host->card); | |
7ea239d9 | 1473 | |
6abaa0c9 | 1474 | mmc_claim_host(host); |
881d926d | 1475 | |
39b9431b UH |
1476 | if (mmc_card_doing_bkops(host->card)) { |
1477 | err = mmc_stop_bkops(host->card); | |
1478 | if (err) | |
1479 | goto out; | |
1480 | } | |
1481 | ||
881d926d ME |
1482 | err = mmc_cache_ctrl(host, 0); |
1483 | if (err) | |
1484 | goto out; | |
1485 | ||
43235679 UH |
1486 | if (mmc_can_poweroff_notify(host->card) && |
1487 | ((host->caps2 & MMC_CAP2_POWEROFF_NOTIFY) || !is_suspend)) | |
03d071fc | 1488 | err = mmc_poweroff_notify(host->card, notify_type); |
07a68216 UH |
1489 | else if (mmc_can_sleep(host->card)) |
1490 | err = mmc_sleep(host); | |
e6c08586 | 1491 | else if (!mmc_host_is_spi(host)) |
85e727ed | 1492 | err = mmc_deselect_cards(host); |
3e73c36b | 1493 | host->card->state &= ~(MMC_STATE_HIGHSPEED | MMC_STATE_HIGHSPEED_200); |
95cdfb72 | 1494 | |
74590263 UH |
1495 | if (!err) |
1496 | mmc_power_off(host); | |
881d926d ME |
1497 | out: |
1498 | mmc_release_host(host); | |
c3805467 | 1499 | return err; |
6abaa0c9 | 1500 | } |
7ea239d9 | 1501 | |
03d071fc UH |
1502 | /* |
1503 | * Suspend callback from host. | |
1504 | */ | |
1505 | static int mmc_suspend(struct mmc_host *host) | |
1506 | { | |
1507 | return _mmc_suspend(host, true); | |
1508 | } | |
1509 | ||
486fdbbc UH |
1510 | /* |
1511 | * Shutdown callback | |
1512 | */ | |
1513 | static int mmc_shutdown(struct mmc_host *host) | |
1514 | { | |
1515 | return _mmc_suspend(host, false); | |
1516 | } | |
1517 | ||
6abaa0c9 PO |
1518 | /* |
1519 | * Resume callback from host. | |
1520 | * | |
1521 | * This function tries to determine if the same card is still present | |
1522 | * and, if so, restore all state to it. | |
1523 | */ | |
95cdfb72 | 1524 | static int mmc_resume(struct mmc_host *host) |
6abaa0c9 PO |
1525 | { |
1526 | int err; | |
1527 | ||
1528 | BUG_ON(!host); | |
1529 | BUG_ON(!host->card); | |
1530 | ||
1531 | mmc_claim_host(host); | |
74590263 UH |
1532 | mmc_power_up(host); |
1533 | mmc_select_voltage(host, host->ocr); | |
e6c08586 | 1534 | err = mmc_init_card(host, host->ocr, host->card); |
2986d0bf PO |
1535 | mmc_release_host(host); |
1536 | ||
95cdfb72 | 1537 | return err; |
6abaa0c9 PO |
1538 | } |
1539 | ||
c4d770d7 UH |
1540 | |
1541 | /* | |
1542 | * Callback for runtime_suspend. | |
1543 | */ | |
1544 | static int mmc_runtime_suspend(struct mmc_host *host) | |
1545 | { | |
1546 | int err; | |
1547 | ||
1548 | if (!(host->caps & MMC_CAP_AGGRESSIVE_PM)) | |
1549 | return 0; | |
1550 | ||
1551 | mmc_claim_host(host); | |
1552 | ||
1553 | err = mmc_suspend(host); | |
1554 | if (err) { | |
1555 | pr_err("%s: error %d doing aggessive suspend\n", | |
1556 | mmc_hostname(host), err); | |
1557 | goto out; | |
1558 | } | |
1559 | mmc_power_off(host); | |
1560 | ||
1561 | out: | |
1562 | mmc_release_host(host); | |
1563 | return err; | |
1564 | } | |
1565 | ||
1566 | /* | |
1567 | * Callback for runtime_resume. | |
1568 | */ | |
1569 | static int mmc_runtime_resume(struct mmc_host *host) | |
1570 | { | |
1571 | int err; | |
1572 | ||
1573 | if (!(host->caps & MMC_CAP_AGGRESSIVE_PM)) | |
1574 | return 0; | |
1575 | ||
1576 | mmc_claim_host(host); | |
1577 | ||
1578 | mmc_power_up(host); | |
1579 | err = mmc_resume(host); | |
1580 | if (err) | |
1581 | pr_err("%s: error %d doing aggessive resume\n", | |
1582 | mmc_hostname(host), err); | |
1583 | ||
1584 | mmc_release_host(host); | |
1585 | return 0; | |
1586 | } | |
1587 | ||
12ae637f | 1588 | static int mmc_power_restore(struct mmc_host *host) |
eae1aeee | 1589 | { |
12ae637f OBC |
1590 | int ret; |
1591 | ||
3e73c36b | 1592 | host->card->state &= ~(MMC_STATE_HIGHSPEED | MMC_STATE_HIGHSPEED_200); |
eae1aeee | 1593 | mmc_claim_host(host); |
12ae637f | 1594 | ret = mmc_init_card(host, host->ocr, host->card); |
eae1aeee | 1595 | mmc_release_host(host); |
12ae637f OBC |
1596 | |
1597 | return ret; | |
eae1aeee AH |
1598 | } |
1599 | ||
6abaa0c9 | 1600 | static const struct mmc_bus_ops mmc_ops = { |
9feae246 AH |
1601 | .remove = mmc_remove, |
1602 | .detect = mmc_detect, | |
1603 | .suspend = NULL, | |
1604 | .resume = NULL, | |
eae1aeee | 1605 | .power_restore = mmc_power_restore, |
d3049504 | 1606 | .alive = mmc_alive, |
486fdbbc | 1607 | .shutdown = mmc_shutdown, |
9feae246 AH |
1608 | }; |
1609 | ||
1610 | static const struct mmc_bus_ops mmc_ops_unsafe = { | |
6abaa0c9 PO |
1611 | .remove = mmc_remove, |
1612 | .detect = mmc_detect, | |
1613 | .suspend = mmc_suspend, | |
1614 | .resume = mmc_resume, | |
c4d770d7 UH |
1615 | .runtime_suspend = mmc_runtime_suspend, |
1616 | .runtime_resume = mmc_runtime_resume, | |
eae1aeee | 1617 | .power_restore = mmc_power_restore, |
d3049504 | 1618 | .alive = mmc_alive, |
486fdbbc | 1619 | .shutdown = mmc_shutdown, |
6abaa0c9 PO |
1620 | }; |
1621 | ||
9feae246 AH |
1622 | static void mmc_attach_bus_ops(struct mmc_host *host) |
1623 | { | |
1624 | const struct mmc_bus_ops *bus_ops; | |
1625 | ||
71d7d3d1 | 1626 | if (!mmc_card_is_removable(host)) |
9feae246 AH |
1627 | bus_ops = &mmc_ops_unsafe; |
1628 | else | |
1629 | bus_ops = &mmc_ops; | |
1630 | mmc_attach_bus(host, bus_ops); | |
1631 | } | |
1632 | ||
6abaa0c9 PO |
1633 | /* |
1634 | * Starting point for MMC card init. | |
1635 | */ | |
807e8e40 | 1636 | int mmc_attach_mmc(struct mmc_host *host) |
6abaa0c9 PO |
1637 | { |
1638 | int err; | |
807e8e40 | 1639 | u32 ocr; |
6abaa0c9 PO |
1640 | |
1641 | BUG_ON(!host); | |
d84075c8 | 1642 | WARN_ON(!host->claimed); |
6abaa0c9 | 1643 | |
44669034 SNX |
1644 | /* Set correct bus mode for MMC before attempting attach */ |
1645 | if (!mmc_host_is_spi(host)) | |
1646 | mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); | |
1647 | ||
807e8e40 AR |
1648 | err = mmc_send_op_cond(host, 0, &ocr); |
1649 | if (err) | |
1650 | return err; | |
1651 | ||
9feae246 | 1652 | mmc_attach_bus_ops(host); |
8f230f45 TI |
1653 | if (host->ocr_avail_mmc) |
1654 | host->ocr_avail = host->ocr_avail_mmc; | |
6abaa0c9 | 1655 | |
af517150 DB |
1656 | /* |
1657 | * We need to get OCR a different way for SPI. | |
1658 | */ | |
1659 | if (mmc_host_is_spi(host)) { | |
1660 | err = mmc_spi_read_ocr(host, 1, &ocr); | |
1661 | if (err) | |
1662 | goto err; | |
1663 | } | |
1664 | ||
6abaa0c9 PO |
1665 | /* |
1666 | * Sanity check the voltages that the card claims to | |
1667 | * support. | |
1668 | */ | |
1669 | if (ocr & 0x7F) { | |
a3c76eb9 | 1670 | pr_warning("%s: card claims to support voltages " |
6abaa0c9 PO |
1671 | "below the defined range. These will be ignored.\n", |
1672 | mmc_hostname(host)); | |
1673 | ocr &= ~0x7F; | |
1674 | } | |
1675 | ||
1676 | host->ocr = mmc_select_voltage(host, ocr); | |
1677 | ||
1678 | /* | |
1679 | * Can we support the voltage of the card? | |
1680 | */ | |
109b5bed PO |
1681 | if (!host->ocr) { |
1682 | err = -EINVAL; | |
6abaa0c9 | 1683 | goto err; |
109b5bed | 1684 | } |
6abaa0c9 PO |
1685 | |
1686 | /* | |
1687 | * Detect and init the card. | |
1688 | */ | |
8c75deae | 1689 | err = mmc_init_card(host, host->ocr, NULL); |
17b0429d | 1690 | if (err) |
6abaa0c9 PO |
1691 | goto err; |
1692 | ||
1693 | mmc_release_host(host); | |
4101c16a | 1694 | err = mmc_add_card(host->card); |
807e8e40 | 1695 | mmc_claim_host(host); |
7ea239d9 | 1696 | if (err) |
2986d0bf | 1697 | goto remove_card; |
7ea239d9 PO |
1698 | |
1699 | return 0; | |
1700 | ||
2986d0bf | 1701 | remove_card: |
807e8e40 | 1702 | mmc_release_host(host); |
6abaa0c9 | 1703 | mmc_remove_card(host->card); |
2986d0bf | 1704 | mmc_claim_host(host); |
807e8e40 | 1705 | host->card = NULL; |
7ea239d9 PO |
1706 | err: |
1707 | mmc_detach_bus(host); | |
7ea239d9 | 1708 | |
a3c76eb9 | 1709 | pr_err("%s: error %d whilst initialising MMC card\n", |
109b5bed PO |
1710 | mmc_hostname(host), err); |
1711 | ||
adf66a0d | 1712 | return err; |
7ea239d9 | 1713 | } |