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> | |
81f8a7be | 14 | #include <linux/of.h> |
5a0e3ad6 | 15 | #include <linux/slab.h> |
0205a904 | 16 | #include <linux/stat.h> |
0cb403a2 | 17 | #include <linux/pm_runtime.h> |
7ea239d9 PO |
18 | |
19 | #include <linux/mmc/host.h> | |
20 | #include <linux/mmc/card.h> | |
21 | #include <linux/mmc/mmc.h> | |
22 | ||
23 | #include "core.h" | |
436f8daa | 24 | #include "host.h" |
4101c16a | 25 | #include "bus.h" |
7ea239d9 | 26 | #include "mmc_ops.h" |
4c4cb171 | 27 | #include "sd_ops.h" |
7ea239d9 PO |
28 | |
29 | static const unsigned int tran_exp[] = { | |
30 | 10000, 100000, 1000000, 10000000, | |
31 | 0, 0, 0, 0 | |
32 | }; | |
33 | ||
34 | static const unsigned char tran_mant[] = { | |
35 | 0, 10, 12, 13, 15, 20, 25, 30, | |
36 | 35, 40, 45, 50, 55, 60, 70, 80, | |
37 | }; | |
38 | ||
39 | static const unsigned int tacc_exp[] = { | |
40 | 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, | |
41 | }; | |
42 | ||
43 | static const unsigned int tacc_mant[] = { | |
44 | 0, 10, 12, 13, 15, 20, 25, 30, | |
45 | 35, 40, 45, 50, 55, 60, 70, 80, | |
46 | }; | |
47 | ||
5320226a P |
48 | static const struct mmc_fixup mmc_ext_csd_fixups[] = { |
49 | /* | |
50 | * Certain Hynix eMMC 4.41 cards might get broken when HPI feature | |
51 | * is used so disable the HPI feature for such buggy cards. | |
52 | */ | |
53 | MMC_FIXUP_EXT_CSD_REV(CID_NAME_ANY, CID_MANFID_HYNIX, | |
54 | 0x014a, add_quirk, MMC_QUIRK_BROKEN_HPI, 5), | |
55 | ||
56 | END_FIXUP | |
57 | }; | |
58 | ||
7ea239d9 PO |
59 | #define UNSTUFF_BITS(resp,start,size) \ |
60 | ({ \ | |
61 | const int __size = size; \ | |
62 | const u32 __mask = (__size < 32 ? 1 << __size : 0) - 1; \ | |
63 | const int __off = 3 - ((start) / 32); \ | |
64 | const int __shft = (start) & 31; \ | |
65 | u32 __res; \ | |
66 | \ | |
67 | __res = resp[__off] >> __shft; \ | |
68 | if (__size + __shft > 32) \ | |
69 | __res |= resp[__off-1] << ((32 - __shft) % 32); \ | |
70 | __res & __mask; \ | |
71 | }) | |
72 | ||
73 | /* | |
74 | * Given the decoded CSD structure, decode the raw CID to our CID structure. | |
75 | */ | |
bd766312 | 76 | static int mmc_decode_cid(struct mmc_card *card) |
7ea239d9 PO |
77 | { |
78 | u32 *resp = card->raw_cid; | |
79 | ||
80 | /* | |
81 | * The selection of the format here is based upon published | |
82 | * specs from sandisk and from what people have reported. | |
83 | */ | |
84 | switch (card->csd.mmca_vsn) { | |
85 | case 0: /* MMC v1.0 - v1.2 */ | |
86 | case 1: /* MMC v1.4 */ | |
87 | card->cid.manfid = UNSTUFF_BITS(resp, 104, 24); | |
88 | card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); | |
89 | card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); | |
90 | card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); | |
91 | card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); | |
92 | card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); | |
93 | card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); | |
94 | card->cid.prod_name[6] = UNSTUFF_BITS(resp, 48, 8); | |
95 | card->cid.hwrev = UNSTUFF_BITS(resp, 44, 4); | |
96 | card->cid.fwrev = UNSTUFF_BITS(resp, 40, 4); | |
97 | card->cid.serial = UNSTUFF_BITS(resp, 16, 24); | |
98 | card->cid.month = UNSTUFF_BITS(resp, 12, 4); | |
99 | card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; | |
100 | break; | |
101 | ||
102 | case 2: /* MMC v2.0 - v2.2 */ | |
103 | case 3: /* MMC v3.1 - v3.3 */ | |
104 | case 4: /* MMC v4 */ | |
105 | card->cid.manfid = UNSTUFF_BITS(resp, 120, 8); | |
106 | card->cid.oemid = UNSTUFF_BITS(resp, 104, 16); | |
107 | card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); | |
108 | card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); | |
109 | card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); | |
110 | card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); | |
111 | card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); | |
112 | card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); | |
51e7e8b6 | 113 | card->cid.prv = UNSTUFF_BITS(resp, 48, 8); |
7ea239d9 PO |
114 | card->cid.serial = UNSTUFF_BITS(resp, 16, 32); |
115 | card->cid.month = UNSTUFF_BITS(resp, 12, 4); | |
116 | card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; | |
117 | break; | |
118 | ||
119 | default: | |
a3c76eb9 | 120 | pr_err("%s: card has unknown MMCA version %d\n", |
7ea239d9 | 121 | mmc_hostname(card->host), card->csd.mmca_vsn); |
bd766312 | 122 | return -EINVAL; |
7ea239d9 | 123 | } |
bd766312 PO |
124 | |
125 | return 0; | |
7ea239d9 PO |
126 | } |
127 | ||
dfe86cba AH |
128 | static void mmc_set_erase_size(struct mmc_card *card) |
129 | { | |
130 | if (card->ext_csd.erase_group_def & 1) | |
131 | card->erase_size = card->ext_csd.hc_erase_size; | |
132 | else | |
133 | card->erase_size = card->csd.erase_size; | |
134 | ||
135 | mmc_init_erase(card); | |
136 | } | |
137 | ||
7ea239d9 PO |
138 | /* |
139 | * Given a 128-bit response, decode to our card CSD structure. | |
140 | */ | |
bd766312 | 141 | static int mmc_decode_csd(struct mmc_card *card) |
7ea239d9 PO |
142 | { |
143 | struct mmc_csd *csd = &card->csd; | |
dfe86cba | 144 | unsigned int e, m, a, b; |
7ea239d9 PO |
145 | u32 *resp = card->raw_csd; |
146 | ||
147 | /* | |
148 | * We only understand CSD structure v1.1 and v1.2. | |
149 | * v1.2 has extra information in bits 15, 11 and 10. | |
6da24b78 | 150 | * We also support eMMC v4.4 & v4.41. |
7ea239d9 | 151 | */ |
6da24b78 KP |
152 | csd->structure = UNSTUFF_BITS(resp, 126, 2); |
153 | if (csd->structure == 0) { | |
a3c76eb9 | 154 | pr_err("%s: unrecognised CSD structure version %d\n", |
6da24b78 | 155 | mmc_hostname(card->host), csd->structure); |
bd766312 | 156 | return -EINVAL; |
7ea239d9 PO |
157 | } |
158 | ||
159 | csd->mmca_vsn = UNSTUFF_BITS(resp, 122, 4); | |
160 | m = UNSTUFF_BITS(resp, 115, 4); | |
161 | e = UNSTUFF_BITS(resp, 112, 3); | |
162 | csd->tacc_ns = (tacc_exp[e] * tacc_mant[m] + 9) / 10; | |
163 | csd->tacc_clks = UNSTUFF_BITS(resp, 104, 8) * 100; | |
164 | ||
165 | m = UNSTUFF_BITS(resp, 99, 4); | |
166 | e = UNSTUFF_BITS(resp, 96, 3); | |
167 | csd->max_dtr = tran_exp[e] * tran_mant[m]; | |
168 | csd->cmdclass = UNSTUFF_BITS(resp, 84, 12); | |
169 | ||
170 | e = UNSTUFF_BITS(resp, 47, 3); | |
171 | m = UNSTUFF_BITS(resp, 62, 12); | |
172 | csd->capacity = (1 + m) << (e + 2); | |
173 | ||
174 | csd->read_blkbits = UNSTUFF_BITS(resp, 80, 4); | |
175 | csd->read_partial = UNSTUFF_BITS(resp, 79, 1); | |
176 | csd->write_misalign = UNSTUFF_BITS(resp, 78, 1); | |
177 | csd->read_misalign = UNSTUFF_BITS(resp, 77, 1); | |
3d705d14 | 178 | csd->dsr_imp = UNSTUFF_BITS(resp, 76, 1); |
7ea239d9 PO |
179 | csd->r2w_factor = UNSTUFF_BITS(resp, 26, 3); |
180 | csd->write_blkbits = UNSTUFF_BITS(resp, 22, 4); | |
181 | csd->write_partial = UNSTUFF_BITS(resp, 21, 1); | |
bd766312 | 182 | |
dfe86cba AH |
183 | if (csd->write_blkbits >= 9) { |
184 | a = UNSTUFF_BITS(resp, 42, 5); | |
185 | b = UNSTUFF_BITS(resp, 37, 5); | |
186 | csd->erase_size = (a + 1) * (b + 1); | |
187 | csd->erase_size <<= csd->write_blkbits - 9; | |
188 | } | |
189 | ||
bd766312 | 190 | return 0; |
7ea239d9 PO |
191 | } |
192 | ||
96cf5f02 SJ |
193 | static void mmc_select_card_type(struct mmc_card *card) |
194 | { | |
195 | struct mmc_host *host = card->host; | |
0a5b6438 | 196 | u8 card_type = card->ext_csd.raw_card_type; |
5f1a4dd0 | 197 | u32 caps = host->caps, caps2 = host->caps2; |
577fb131 | 198 | unsigned int hs_max_dtr = 0, hs200_max_dtr = 0; |
2415c0ef | 199 | unsigned int avail_type = 0; |
96cf5f02 | 200 | |
2415c0ef SJ |
201 | if (caps & MMC_CAP_MMC_HIGHSPEED && |
202 | card_type & EXT_CSD_CARD_TYPE_HS_26) { | |
96cf5f02 | 203 | hs_max_dtr = MMC_HIGH_26_MAX_DTR; |
2415c0ef SJ |
204 | avail_type |= EXT_CSD_CARD_TYPE_HS_26; |
205 | } | |
96cf5f02 SJ |
206 | |
207 | if (caps & MMC_CAP_MMC_HIGHSPEED && | |
2415c0ef | 208 | card_type & EXT_CSD_CARD_TYPE_HS_52) { |
96cf5f02 | 209 | hs_max_dtr = MMC_HIGH_52_MAX_DTR; |
2415c0ef SJ |
210 | avail_type |= EXT_CSD_CARD_TYPE_HS_52; |
211 | } | |
96cf5f02 | 212 | |
2415c0ef SJ |
213 | if (caps & MMC_CAP_1_8V_DDR && |
214 | card_type & EXT_CSD_CARD_TYPE_DDR_1_8V) { | |
96cf5f02 | 215 | hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; |
2415c0ef SJ |
216 | avail_type |= EXT_CSD_CARD_TYPE_DDR_1_8V; |
217 | } | |
218 | ||
219 | if (caps & MMC_CAP_1_2V_DDR && | |
220 | card_type & EXT_CSD_CARD_TYPE_DDR_1_2V) { | |
221 | hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; | |
222 | avail_type |= EXT_CSD_CARD_TYPE_DDR_1_2V; | |
223 | } | |
96cf5f02 | 224 | |
2415c0ef SJ |
225 | if (caps2 & MMC_CAP2_HS200_1_8V_SDR && |
226 | card_type & EXT_CSD_CARD_TYPE_HS200_1_8V) { | |
577fb131 | 227 | hs200_max_dtr = MMC_HS200_MAX_DTR; |
2415c0ef SJ |
228 | avail_type |= EXT_CSD_CARD_TYPE_HS200_1_8V; |
229 | } | |
230 | ||
231 | if (caps2 & MMC_CAP2_HS200_1_2V_SDR && | |
232 | card_type & EXT_CSD_CARD_TYPE_HS200_1_2V) { | |
577fb131 | 233 | hs200_max_dtr = MMC_HS200_MAX_DTR; |
2415c0ef SJ |
234 | avail_type |= EXT_CSD_CARD_TYPE_HS200_1_2V; |
235 | } | |
96cf5f02 | 236 | |
0a5b6438 SJ |
237 | if (caps2 & MMC_CAP2_HS400_1_8V && |
238 | card_type & EXT_CSD_CARD_TYPE_HS400_1_8V) { | |
239 | hs200_max_dtr = MMC_HS200_MAX_DTR; | |
240 | avail_type |= EXT_CSD_CARD_TYPE_HS400_1_8V; | |
241 | } | |
242 | ||
243 | if (caps2 & MMC_CAP2_HS400_1_2V && | |
244 | card_type & EXT_CSD_CARD_TYPE_HS400_1_2V) { | |
245 | hs200_max_dtr = MMC_HS200_MAX_DTR; | |
246 | avail_type |= EXT_CSD_CARD_TYPE_HS400_1_2V; | |
247 | } | |
248 | ||
81ac2af6 SL |
249 | if ((caps2 & MMC_CAP2_HS400_ES) && |
250 | card->ext_csd.strobe_support && | |
251 | (avail_type & EXT_CSD_CARD_TYPE_HS400)) | |
252 | avail_type |= EXT_CSD_CARD_TYPE_HS400ES; | |
253 | ||
96cf5f02 | 254 | card->ext_csd.hs_max_dtr = hs_max_dtr; |
577fb131 | 255 | card->ext_csd.hs200_max_dtr = hs200_max_dtr; |
2415c0ef | 256 | card->mmc_avail_type = avail_type; |
96cf5f02 SJ |
257 | } |
258 | ||
b4493eea GS |
259 | static void mmc_manage_enhanced_area(struct mmc_card *card, u8 *ext_csd) |
260 | { | |
994324bb GS |
261 | u8 hc_erase_grp_sz, hc_wp_grp_sz; |
262 | ||
263 | /* | |
264 | * Disable these attributes by default | |
265 | */ | |
266 | card->ext_csd.enhanced_area_offset = -EINVAL; | |
267 | card->ext_csd.enhanced_area_size = -EINVAL; | |
b4493eea GS |
268 | |
269 | /* | |
270 | * Enhanced area feature support -- check whether the eMMC | |
271 | * card has the Enhanced area enabled. If so, export enhanced | |
272 | * area offset and size to user by adding sysfs interface. | |
273 | */ | |
274 | if ((ext_csd[EXT_CSD_PARTITION_SUPPORT] & 0x2) && | |
275 | (ext_csd[EXT_CSD_PARTITION_ATTRIBUTE] & 0x1)) { | |
994324bb GS |
276 | if (card->ext_csd.partition_setting_completed) { |
277 | hc_erase_grp_sz = | |
278 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; | |
279 | hc_wp_grp_sz = | |
280 | ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; | |
b4493eea | 281 | |
994324bb GS |
282 | /* |
283 | * calculate the enhanced data area offset, in bytes | |
284 | */ | |
285 | card->ext_csd.enhanced_area_offset = | |
ded8a5f9 KM |
286 | (((unsigned long long)ext_csd[139]) << 24) + |
287 | (((unsigned long long)ext_csd[138]) << 16) + | |
288 | (((unsigned long long)ext_csd[137]) << 8) + | |
289 | (((unsigned long long)ext_csd[136])); | |
994324bb GS |
290 | if (mmc_card_blockaddr(card)) |
291 | card->ext_csd.enhanced_area_offset <<= 9; | |
292 | /* | |
293 | * calculate the enhanced data area size, in kilobytes | |
294 | */ | |
295 | card->ext_csd.enhanced_area_size = | |
296 | (ext_csd[142] << 16) + (ext_csd[141] << 8) + | |
297 | ext_csd[140]; | |
298 | card->ext_csd.enhanced_area_size *= | |
299 | (size_t)(hc_erase_grp_sz * hc_wp_grp_sz); | |
300 | card->ext_csd.enhanced_area_size <<= 9; | |
301 | } else { | |
302 | pr_warn("%s: defines enhanced area without partition setting complete\n", | |
303 | mmc_hostname(card->host)); | |
304 | } | |
b4493eea GS |
305 | } |
306 | } | |
307 | ||
308 | static void mmc_manage_gp_partitions(struct mmc_card *card, u8 *ext_csd) | |
309 | { | |
b4493eea | 310 | int idx; |
994324bb GS |
311 | u8 hc_erase_grp_sz, hc_wp_grp_sz; |
312 | unsigned int part_size; | |
b4493eea GS |
313 | |
314 | /* | |
315 | * General purpose partition feature support -- | |
316 | * If ext_csd has the size of general purpose partitions, | |
317 | * set size, part_cfg, partition name in mmc_part. | |
318 | */ | |
319 | if (ext_csd[EXT_CSD_PARTITION_SUPPORT] & | |
320 | EXT_CSD_PART_SUPPORT_PART_EN) { | |
994324bb GS |
321 | hc_erase_grp_sz = |
322 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; | |
323 | hc_wp_grp_sz = | |
324 | ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; | |
b4493eea GS |
325 | |
326 | for (idx = 0; idx < MMC_NUM_GP_PARTITION; idx++) { | |
327 | if (!ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3] && | |
328 | !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] && | |
329 | !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2]) | |
330 | continue; | |
994324bb GS |
331 | if (card->ext_csd.partition_setting_completed == 0) { |
332 | pr_warn("%s: has partition size defined without partition complete\n", | |
333 | mmc_hostname(card->host)); | |
334 | break; | |
335 | } | |
b4493eea GS |
336 | part_size = |
337 | (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2] | |
338 | << 16) + | |
339 | (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] | |
340 | << 8) + | |
341 | ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3]; | |
342 | part_size *= (size_t)(hc_erase_grp_sz * | |
343 | hc_wp_grp_sz); | |
344 | mmc_part_add(card, part_size << 19, | |
345 | EXT_CSD_PART_CONFIG_ACC_GP0 + idx, | |
346 | "gp%d", idx, false, | |
347 | MMC_BLK_DATA_AREA_GP); | |
348 | } | |
349 | } | |
350 | } | |
351 | ||
1c447116 AH |
352 | /* Minimum partition switch timeout in milliseconds */ |
353 | #define MMC_MIN_PART_SWITCH_TIME 300 | |
354 | ||
08ee80cc PR |
355 | /* |
356 | * Decode extended CSD. | |
357 | */ | |
076ec38a | 358 | static int mmc_decode_ext_csd(struct mmc_card *card, u8 *ext_csd) |
08ee80cc | 359 | { |
e0c368d5 NJ |
360 | int err = 0, idx; |
361 | unsigned int part_size; | |
81f8a7be HG |
362 | struct device_node *np; |
363 | bool broken_hpi = false; | |
08ee80cc | 364 | |
6da24b78 | 365 | /* Version is coded in the CSD_STRUCTURE byte in the EXT_CSD register */ |
f39b2dd9 | 366 | card->ext_csd.raw_ext_csd_structure = ext_csd[EXT_CSD_STRUCTURE]; |
6da24b78 | 367 | if (card->csd.structure == 3) { |
f39b2dd9 | 368 | if (card->ext_csd.raw_ext_csd_structure > 2) { |
a3c76eb9 | 369 | pr_err("%s: unrecognised EXT_CSD structure " |
6da24b78 | 370 | "version %d\n", mmc_hostname(card->host), |
f39b2dd9 | 371 | card->ext_csd.raw_ext_csd_structure); |
6da24b78 KP |
372 | err = -EINVAL; |
373 | goto out; | |
374 | } | |
375 | } | |
376 | ||
81f8a7be HG |
377 | np = mmc_of_find_child_device(card->host, 0); |
378 | if (np && of_device_is_compatible(np, "mmc-card")) | |
379 | broken_hpi = of_property_read_bool(np, "broken-hpi"); | |
380 | of_node_put(np); | |
381 | ||
03a59437 RI |
382 | /* |
383 | * The EXT_CSD format is meant to be forward compatible. As long | |
384 | * as CSD_STRUCTURE does not change, all values for EXT_CSD_REV | |
385 | * are authorized, see JEDEC JESD84-B50 section B.8. | |
386 | */ | |
b1ebe384 | 387 | card->ext_csd.rev = ext_csd[EXT_CSD_REV]; |
d7604d76 | 388 | |
5320226a P |
389 | /* fixup device after ext_csd revision field is updated */ |
390 | mmc_fixup_device(card, mmc_ext_csd_fixups); | |
391 | ||
f39b2dd9 PR |
392 | card->ext_csd.raw_sectors[0] = ext_csd[EXT_CSD_SEC_CNT + 0]; |
393 | card->ext_csd.raw_sectors[1] = ext_csd[EXT_CSD_SEC_CNT + 1]; | |
394 | card->ext_csd.raw_sectors[2] = ext_csd[EXT_CSD_SEC_CNT + 2]; | |
395 | card->ext_csd.raw_sectors[3] = ext_csd[EXT_CSD_SEC_CNT + 3]; | |
b1ebe384 | 396 | if (card->ext_csd.rev >= 2) { |
d7604d76 PO |
397 | card->ext_csd.sectors = |
398 | ext_csd[EXT_CSD_SEC_CNT + 0] << 0 | | |
399 | ext_csd[EXT_CSD_SEC_CNT + 1] << 8 | | |
400 | ext_csd[EXT_CSD_SEC_CNT + 2] << 16 | | |
401 | ext_csd[EXT_CSD_SEC_CNT + 3] << 24; | |
fc8a0985 HP |
402 | |
403 | /* Cards with density > 2GiB are sector addressed */ | |
404 | if (card->ext_csd.sectors > (2u * 1024 * 1024 * 1024) / 512) | |
d7604d76 PO |
405 | mmc_card_set_blockaddr(card); |
406 | } | |
96cf5f02 | 407 | |
81ac2af6 | 408 | card->ext_csd.strobe_support = ext_csd[EXT_CSD_STROBE_SUPPORT]; |
f39b2dd9 | 409 | card->ext_csd.raw_card_type = ext_csd[EXT_CSD_CARD_TYPE]; |
96cf5f02 | 410 | mmc_select_card_type(card); |
7ea239d9 | 411 | |
f39b2dd9 PR |
412 | card->ext_csd.raw_s_a_timeout = ext_csd[EXT_CSD_S_A_TIMEOUT]; |
413 | card->ext_csd.raw_erase_timeout_mult = | |
414 | ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; | |
415 | card->ext_csd.raw_hc_erase_grp_size = | |
416 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; | |
b1ebe384 JL |
417 | if (card->ext_csd.rev >= 3) { |
418 | u8 sa_shift = ext_csd[EXT_CSD_S_A_TIMEOUT]; | |
371a689f AW |
419 | card->ext_csd.part_config = ext_csd[EXT_CSD_PART_CONFIG]; |
420 | ||
421 | /* EXT_CSD value is in units of 10ms, but we store in ms */ | |
422 | card->ext_csd.part_time = 10 * ext_csd[EXT_CSD_PART_SWITCH_TIME]; | |
1c447116 AH |
423 | /* Some eMMC set the value too low so set a minimum */ |
424 | if (card->ext_csd.part_time && | |
425 | card->ext_csd.part_time < MMC_MIN_PART_SWITCH_TIME) | |
426 | card->ext_csd.part_time = MMC_MIN_PART_SWITCH_TIME; | |
b1ebe384 JL |
427 | |
428 | /* Sleep / awake timeout in 100ns units */ | |
429 | if (sa_shift > 0 && sa_shift <= 0x17) | |
430 | card->ext_csd.sa_timeout = | |
431 | 1 << ext_csd[EXT_CSD_S_A_TIMEOUT]; | |
dfe86cba AH |
432 | card->ext_csd.erase_group_def = |
433 | ext_csd[EXT_CSD_ERASE_GROUP_DEF]; | |
434 | card->ext_csd.hc_erase_timeout = 300 * | |
435 | ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; | |
436 | card->ext_csd.hc_erase_size = | |
437 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] << 10; | |
f4c5522b AW |
438 | |
439 | card->ext_csd.rel_sectors = ext_csd[EXT_CSD_REL_WR_SEC_C]; | |
371a689f AW |
440 | |
441 | /* | |
442 | * There are two boot regions of equal size, defined in | |
443 | * multiples of 128K. | |
444 | */ | |
e0c368d5 NJ |
445 | if (ext_csd[EXT_CSD_BOOT_MULT] && mmc_boot_partition_access(card->host)) { |
446 | for (idx = 0; idx < MMC_NUM_BOOT_PARTITION; idx++) { | |
447 | part_size = ext_csd[EXT_CSD_BOOT_MULT] << 17; | |
448 | mmc_part_add(card, part_size, | |
449 | EXT_CSD_PART_CONFIG_ACC_BOOT0 + idx, | |
add710ea JR |
450 | "boot%d", idx, true, |
451 | MMC_BLK_DATA_AREA_BOOT); | |
e0c368d5 NJ |
452 | } |
453 | } | |
dfe86cba AH |
454 | } |
455 | ||
f39b2dd9 | 456 | card->ext_csd.raw_hc_erase_gap_size = |
dd13b4ed | 457 | ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; |
f39b2dd9 PR |
458 | card->ext_csd.raw_sec_trim_mult = |
459 | ext_csd[EXT_CSD_SEC_TRIM_MULT]; | |
460 | card->ext_csd.raw_sec_erase_mult = | |
461 | ext_csd[EXT_CSD_SEC_ERASE_MULT]; | |
462 | card->ext_csd.raw_sec_feature_support = | |
463 | ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; | |
464 | card->ext_csd.raw_trim_mult = | |
465 | ext_csd[EXT_CSD_TRIM_MULT]; | |
836dc2fe | 466 | card->ext_csd.raw_partition_support = ext_csd[EXT_CSD_PARTITION_SUPPORT]; |
b097e07f | 467 | card->ext_csd.raw_driver_strength = ext_csd[EXT_CSD_DRIVER_STRENGTH]; |
dfe86cba | 468 | if (card->ext_csd.rev >= 4) { |
69803d4f GS |
469 | if (ext_csd[EXT_CSD_PARTITION_SETTING_COMPLETED] & |
470 | EXT_CSD_PART_SETTING_COMPLETED) | |
471 | card->ext_csd.partition_setting_completed = 1; | |
472 | else | |
473 | card->ext_csd.partition_setting_completed = 0; | |
474 | ||
b4493eea | 475 | mmc_manage_enhanced_area(card, ext_csd); |
709de99d | 476 | |
b4493eea | 477 | mmc_manage_gp_partitions(card, ext_csd); |
e0c368d5 | 478 | |
dfe86cba AH |
479 | card->ext_csd.sec_trim_mult = |
480 | ext_csd[EXT_CSD_SEC_TRIM_MULT]; | |
481 | card->ext_csd.sec_erase_mult = | |
482 | ext_csd[EXT_CSD_SEC_ERASE_MULT]; | |
483 | card->ext_csd.sec_feature_support = | |
484 | ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; | |
485 | card->ext_csd.trim_timeout = 300 * | |
486 | ext_csd[EXT_CSD_TRIM_MULT]; | |
add710ea JR |
487 | |
488 | /* | |
489 | * Note that the call to mmc_part_add above defaults to read | |
490 | * only. If this default assumption is changed, the call must | |
491 | * take into account the value of boot_locked below. | |
492 | */ | |
493 | card->ext_csd.boot_ro_lock = ext_csd[EXT_CSD_BOOT_WP]; | |
494 | card->ext_csd.boot_ro_lockable = true; | |
60443712 FS |
495 | |
496 | /* Save power class values */ | |
497 | card->ext_csd.raw_pwr_cl_52_195 = | |
498 | ext_csd[EXT_CSD_PWR_CL_52_195]; | |
499 | card->ext_csd.raw_pwr_cl_26_195 = | |
500 | ext_csd[EXT_CSD_PWR_CL_26_195]; | |
501 | card->ext_csd.raw_pwr_cl_52_360 = | |
502 | ext_csd[EXT_CSD_PWR_CL_52_360]; | |
503 | card->ext_csd.raw_pwr_cl_26_360 = | |
504 | ext_csd[EXT_CSD_PWR_CL_26_360]; | |
505 | card->ext_csd.raw_pwr_cl_200_195 = | |
506 | ext_csd[EXT_CSD_PWR_CL_200_195]; | |
507 | card->ext_csd.raw_pwr_cl_200_360 = | |
508 | ext_csd[EXT_CSD_PWR_CL_200_360]; | |
509 | card->ext_csd.raw_pwr_cl_ddr_52_195 = | |
510 | ext_csd[EXT_CSD_PWR_CL_DDR_52_195]; | |
511 | card->ext_csd.raw_pwr_cl_ddr_52_360 = | |
512 | ext_csd[EXT_CSD_PWR_CL_DDR_52_360]; | |
0a5b6438 SJ |
513 | card->ext_csd.raw_pwr_cl_ddr_200_360 = |
514 | ext_csd[EXT_CSD_PWR_CL_DDR_200_360]; | |
b1ebe384 JL |
515 | } |
516 | ||
b2499518 | 517 | if (card->ext_csd.rev >= 5) { |
7c4f10ac RI |
518 | /* Adjust production date as per JEDEC JESD84-B451 */ |
519 | if (card->cid.year < 2010) | |
520 | card->cid.year += 16; | |
521 | ||
950d56ac | 522 | /* check whether the eMMC card supports BKOPS */ |
5320226a P |
523 | if (!mmc_card_broken_hpi(card) && |
524 | ext_csd[EXT_CSD_BKOPS_SUPPORT] & 0x1) { | |
950d56ac | 525 | card->ext_csd.bkops = 1; |
0501be64 AS |
526 | card->ext_csd.man_bkops_en = |
527 | (ext_csd[EXT_CSD_BKOPS_EN] & | |
528 | EXT_CSD_MANUAL_BKOPS_MASK); | |
950d56ac JC |
529 | card->ext_csd.raw_bkops_status = |
530 | ext_csd[EXT_CSD_BKOPS_STATUS]; | |
0501be64 | 531 | if (!card->ext_csd.man_bkops_en) |
4ec96b4c | 532 | pr_debug("%s: MAN_BKOPS_EN bit is not set\n", |
950d56ac JC |
533 | mmc_hostname(card->host)); |
534 | } | |
535 | ||
eb0d8f13 | 536 | /* check whether the eMMC card supports HPI */ |
5320226a P |
537 | if (!mmc_card_broken_hpi(card) && |
538 | !broken_hpi && (ext_csd[EXT_CSD_HPI_FEATURES] & 0x1)) { | |
eb0d8f13 JC |
539 | card->ext_csd.hpi = 1; |
540 | if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x2) | |
541 | card->ext_csd.hpi_cmd = MMC_STOP_TRANSMISSION; | |
542 | else | |
543 | card->ext_csd.hpi_cmd = MMC_SEND_STATUS; | |
544 | /* | |
545 | * Indicate the maximum timeout to close | |
546 | * a command interrupted by HPI | |
547 | */ | |
548 | card->ext_csd.out_of_int_time = | |
549 | ext_csd[EXT_CSD_OUT_OF_INTERRUPT_TIME] * 10; | |
550 | } | |
551 | ||
f4c5522b | 552 | card->ext_csd.rel_param = ext_csd[EXT_CSD_WR_REL_PARAM]; |
b2499518 | 553 | card->ext_csd.rst_n_function = ext_csd[EXT_CSD_RST_N_FUNCTION]; |
090d25fe LP |
554 | |
555 | /* | |
556 | * RPMB regions are defined in multiples of 128K. | |
557 | */ | |
558 | card->ext_csd.raw_rpmb_size_mult = ext_csd[EXT_CSD_RPMB_MULT]; | |
d0123cca | 559 | if (ext_csd[EXT_CSD_RPMB_MULT] && mmc_host_cmd23(card->host)) { |
090d25fe LP |
560 | mmc_part_add(card, ext_csd[EXT_CSD_RPMB_MULT] << 17, |
561 | EXT_CSD_PART_CONFIG_ACC_RPMB, | |
562 | "rpmb", 0, false, | |
563 | MMC_BLK_DATA_AREA_RPMB); | |
564 | } | |
b2499518 | 565 | } |
f4c5522b | 566 | |
5238acbe | 567 | card->ext_csd.raw_erased_mem_count = ext_csd[EXT_CSD_ERASED_MEM_CONT]; |
dfe86cba AH |
568 | if (ext_csd[EXT_CSD_ERASED_MEM_CONT]) |
569 | card->erased_byte = 0xFF; | |
570 | else | |
571 | card->erased_byte = 0x0; | |
572 | ||
336c716a | 573 | /* eMMC v4.5 or later */ |
bec8726a | 574 | if (card->ext_csd.rev >= 6) { |
336c716a SJ |
575 | card->ext_csd.feature_support |= MMC_DISCARD_FEATURE; |
576 | ||
b23cf0bd SJ |
577 | card->ext_csd.generic_cmd6_time = 10 * |
578 | ext_csd[EXT_CSD_GENERIC_CMD6_TIME]; | |
bec8726a G |
579 | card->ext_csd.power_off_longtime = 10 * |
580 | ext_csd[EXT_CSD_POWER_OFF_LONG_TIME]; | |
b23cf0bd | 581 | |
336c716a SJ |
582 | card->ext_csd.cache_size = |
583 | ext_csd[EXT_CSD_CACHE_SIZE + 0] << 0 | | |
584 | ext_csd[EXT_CSD_CACHE_SIZE + 1] << 8 | | |
585 | ext_csd[EXT_CSD_CACHE_SIZE + 2] << 16 | | |
586 | ext_csd[EXT_CSD_CACHE_SIZE + 3] << 24; | |
4265900e SD |
587 | |
588 | if (ext_csd[EXT_CSD_DATA_SECTOR_SIZE] == 1) | |
589 | card->ext_csd.data_sector_size = 4096; | |
590 | else | |
591 | card->ext_csd.data_sector_size = 512; | |
592 | ||
593 | if ((ext_csd[EXT_CSD_DATA_TAG_SUPPORT] & 1) && | |
594 | (ext_csd[EXT_CSD_TAG_UNIT_SIZE] <= 8)) { | |
595 | card->ext_csd.data_tag_unit_size = | |
596 | ((unsigned int) 1 << ext_csd[EXT_CSD_TAG_UNIT_SIZE]) * | |
597 | (card->ext_csd.data_sector_size); | |
598 | } else { | |
599 | card->ext_csd.data_tag_unit_size = 0; | |
600 | } | |
abd9ac14 SJ |
601 | |
602 | card->ext_csd.max_packed_writes = | |
603 | ext_csd[EXT_CSD_MAX_PACKED_WRITES]; | |
604 | card->ext_csd.max_packed_reads = | |
605 | ext_csd[EXT_CSD_MAX_PACKED_READS]; | |
a5075eb9 SD |
606 | } else { |
607 | card->ext_csd.data_sector_size = 512; | |
336c716a | 608 | } |
881d1c25 | 609 | |
0f762426 GG |
610 | /* eMMC v5 or later */ |
611 | if (card->ext_csd.rev >= 7) { | |
612 | memcpy(card->ext_csd.fwrev, &ext_csd[EXT_CSD_FIRMWARE_VERSION], | |
613 | MMC_FIRMWARE_LEN); | |
614 | card->ext_csd.ffu_capable = | |
615 | (ext_csd[EXT_CSD_SUPPORTED_MODE] & 0x1) && | |
616 | !(ext_csd[EXT_CSD_FW_CONFIG] & 0x1); | |
617 | } | |
7ea239d9 | 618 | out: |
08ee80cc PR |
619 | return err; |
620 | } | |
621 | ||
076ec38a UH |
622 | static int mmc_read_ext_csd(struct mmc_card *card) |
623 | { | |
c197787c | 624 | u8 *ext_csd; |
076ec38a UH |
625 | int err; |
626 | ||
c197787c UH |
627 | if (!mmc_can_ext_csd(card)) |
628 | return 0; | |
629 | ||
076ec38a | 630 | err = mmc_get_ext_csd(card, &ext_csd); |
c197787c UH |
631 | if (err) { |
632 | /* If the host or the card can't do the switch, | |
633 | * fail more gracefully. */ | |
634 | if ((err != -EINVAL) | |
635 | && (err != -ENOSYS) | |
636 | && (err != -EFAULT)) | |
637 | return err; | |
638 | ||
639 | /* | |
640 | * High capacity cards should have this "magic" size | |
641 | * stored in their CSD. | |
642 | */ | |
643 | if (card->csd.capacity == (4096 * 512)) { | |
644 | pr_err("%s: unable to read EXT_CSD on a possible high capacity card. Card will be ignored.\n", | |
645 | mmc_hostname(card->host)); | |
646 | } else { | |
647 | pr_warn("%s: unable to read EXT_CSD, performance might suffer\n", | |
648 | mmc_hostname(card->host)); | |
649 | err = 0; | |
650 | } | |
651 | ||
076ec38a | 652 | return err; |
c197787c | 653 | } |
076ec38a UH |
654 | |
655 | err = mmc_decode_ext_csd(card, ext_csd); | |
656 | kfree(ext_csd); | |
657 | return err; | |
658 | } | |
659 | ||
f39b2dd9 | 660 | static int mmc_compare_ext_csds(struct mmc_card *card, unsigned bus_width) |
08ee80cc PR |
661 | { |
662 | u8 *bw_ext_csd; | |
663 | int err; | |
664 | ||
f39b2dd9 PR |
665 | if (bus_width == MMC_BUS_WIDTH_1) |
666 | return 0; | |
667 | ||
08ee80cc | 668 | err = mmc_get_ext_csd(card, &bw_ext_csd); |
c197787c UH |
669 | if (err) |
670 | return err; | |
08ee80cc | 671 | |
08ee80cc | 672 | /* only compare read only fields */ |
dd13b4ed | 673 | err = !((card->ext_csd.raw_partition_support == |
08ee80cc | 674 | bw_ext_csd[EXT_CSD_PARTITION_SUPPORT]) && |
f39b2dd9 | 675 | (card->ext_csd.raw_erased_mem_count == |
08ee80cc | 676 | bw_ext_csd[EXT_CSD_ERASED_MEM_CONT]) && |
f39b2dd9 | 677 | (card->ext_csd.rev == |
08ee80cc | 678 | bw_ext_csd[EXT_CSD_REV]) && |
f39b2dd9 | 679 | (card->ext_csd.raw_ext_csd_structure == |
08ee80cc | 680 | bw_ext_csd[EXT_CSD_STRUCTURE]) && |
f39b2dd9 | 681 | (card->ext_csd.raw_card_type == |
08ee80cc | 682 | bw_ext_csd[EXT_CSD_CARD_TYPE]) && |
f39b2dd9 | 683 | (card->ext_csd.raw_s_a_timeout == |
08ee80cc | 684 | bw_ext_csd[EXT_CSD_S_A_TIMEOUT]) && |
f39b2dd9 | 685 | (card->ext_csd.raw_hc_erase_gap_size == |
08ee80cc | 686 | bw_ext_csd[EXT_CSD_HC_WP_GRP_SIZE]) && |
f39b2dd9 | 687 | (card->ext_csd.raw_erase_timeout_mult == |
08ee80cc | 688 | bw_ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]) && |
f39b2dd9 | 689 | (card->ext_csd.raw_hc_erase_grp_size == |
08ee80cc | 690 | bw_ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]) && |
f39b2dd9 | 691 | (card->ext_csd.raw_sec_trim_mult == |
08ee80cc | 692 | bw_ext_csd[EXT_CSD_SEC_TRIM_MULT]) && |
f39b2dd9 | 693 | (card->ext_csd.raw_sec_erase_mult == |
08ee80cc | 694 | bw_ext_csd[EXT_CSD_SEC_ERASE_MULT]) && |
f39b2dd9 | 695 | (card->ext_csd.raw_sec_feature_support == |
08ee80cc | 696 | bw_ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]) && |
f39b2dd9 | 697 | (card->ext_csd.raw_trim_mult == |
08ee80cc | 698 | bw_ext_csd[EXT_CSD_TRIM_MULT]) && |
f39b2dd9 PR |
699 | (card->ext_csd.raw_sectors[0] == |
700 | bw_ext_csd[EXT_CSD_SEC_CNT + 0]) && | |
701 | (card->ext_csd.raw_sectors[1] == | |
702 | bw_ext_csd[EXT_CSD_SEC_CNT + 1]) && | |
703 | (card->ext_csd.raw_sectors[2] == | |
704 | bw_ext_csd[EXT_CSD_SEC_CNT + 2]) && | |
705 | (card->ext_csd.raw_sectors[3] == | |
60443712 FS |
706 | bw_ext_csd[EXT_CSD_SEC_CNT + 3]) && |
707 | (card->ext_csd.raw_pwr_cl_52_195 == | |
708 | bw_ext_csd[EXT_CSD_PWR_CL_52_195]) && | |
709 | (card->ext_csd.raw_pwr_cl_26_195 == | |
710 | bw_ext_csd[EXT_CSD_PWR_CL_26_195]) && | |
711 | (card->ext_csd.raw_pwr_cl_52_360 == | |
712 | bw_ext_csd[EXT_CSD_PWR_CL_52_360]) && | |
713 | (card->ext_csd.raw_pwr_cl_26_360 == | |
714 | bw_ext_csd[EXT_CSD_PWR_CL_26_360]) && | |
715 | (card->ext_csd.raw_pwr_cl_200_195 == | |
716 | bw_ext_csd[EXT_CSD_PWR_CL_200_195]) && | |
717 | (card->ext_csd.raw_pwr_cl_200_360 == | |
718 | bw_ext_csd[EXT_CSD_PWR_CL_200_360]) && | |
719 | (card->ext_csd.raw_pwr_cl_ddr_52_195 == | |
720 | bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_195]) && | |
721 | (card->ext_csd.raw_pwr_cl_ddr_52_360 == | |
0a5b6438 SJ |
722 | bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_360]) && |
723 | (card->ext_csd.raw_pwr_cl_ddr_200_360 == | |
724 | bw_ext_csd[EXT_CSD_PWR_CL_DDR_200_360])); | |
725 | ||
08ee80cc PR |
726 | if (err) |
727 | err = -EINVAL; | |
728 | ||
00b41b58 | 729 | kfree(bw_ext_csd); |
7ea239d9 PO |
730 | return err; |
731 | } | |
732 | ||
51ec92e2 PO |
733 | MMC_DEV_ATTR(cid, "%08x%08x%08x%08x\n", card->raw_cid[0], card->raw_cid[1], |
734 | card->raw_cid[2], card->raw_cid[3]); | |
735 | MMC_DEV_ATTR(csd, "%08x%08x%08x%08x\n", card->raw_csd[0], card->raw_csd[1], | |
736 | card->raw_csd[2], card->raw_csd[3]); | |
737 | MMC_DEV_ATTR(date, "%02d/%04d\n", card->cid.month, card->cid.year); | |
dfe86cba AH |
738 | MMC_DEV_ATTR(erase_size, "%u\n", card->erase_size << 9); |
739 | MMC_DEV_ATTR(preferred_erase_size, "%u\n", card->pref_erase << 9); | |
0f762426 | 740 | MMC_DEV_ATTR(ffu_capable, "%d\n", card->ext_csd.ffu_capable); |
51ec92e2 PO |
741 | MMC_DEV_ATTR(hwrev, "0x%x\n", card->cid.hwrev); |
742 | MMC_DEV_ATTR(manfid, "0x%06x\n", card->cid.manfid); | |
743 | MMC_DEV_ATTR(name, "%s\n", card->cid.prod_name); | |
744 | MMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid); | |
51e7e8b6 | 745 | MMC_DEV_ATTR(prv, "0x%x\n", card->cid.prv); |
51ec92e2 | 746 | MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial); |
709de99d CD |
747 | MMC_DEV_ATTR(enhanced_area_offset, "%llu\n", |
748 | card->ext_csd.enhanced_area_offset); | |
749 | MMC_DEV_ATTR(enhanced_area_size, "%u\n", card->ext_csd.enhanced_area_size); | |
188cc042 LP |
750 | MMC_DEV_ATTR(raw_rpmb_size_mult, "%#x\n", card->ext_csd.raw_rpmb_size_mult); |
751 | MMC_DEV_ATTR(rel_sectors, "%#x\n", card->ext_csd.rel_sectors); | |
5fb06af7 | 752 | MMC_DEV_ATTR(ocr, "%08x\n", card->ocr); |
51ec92e2 | 753 | |
0f762426 GG |
754 | static ssize_t mmc_fwrev_show(struct device *dev, |
755 | struct device_attribute *attr, | |
756 | char *buf) | |
757 | { | |
758 | struct mmc_card *card = mmc_dev_to_card(dev); | |
759 | ||
760 | if (card->ext_csd.rev < 7) { | |
761 | return sprintf(buf, "0x%x\n", card->cid.fwrev); | |
762 | } else { | |
763 | return sprintf(buf, "0x%*phN\n", MMC_FIRMWARE_LEN, | |
764 | card->ext_csd.fwrev); | |
765 | } | |
766 | } | |
767 | ||
768 | static DEVICE_ATTR(fwrev, S_IRUGO, mmc_fwrev_show, NULL); | |
769 | ||
6825a606 BP |
770 | static ssize_t mmc_dsr_show(struct device *dev, |
771 | struct device_attribute *attr, | |
772 | char *buf) | |
773 | { | |
774 | struct mmc_card *card = mmc_dev_to_card(dev); | |
775 | struct mmc_host *host = card->host; | |
776 | ||
777 | if (card->csd.dsr_imp && host->dsr_req) | |
778 | return sprintf(buf, "0x%x\n", host->dsr); | |
779 | else | |
780 | /* return default DSR value */ | |
781 | return sprintf(buf, "0x%x\n", 0x404); | |
782 | } | |
783 | ||
784 | static DEVICE_ATTR(dsr, S_IRUGO, mmc_dsr_show, NULL); | |
785 | ||
51ec92e2 PO |
786 | static struct attribute *mmc_std_attrs[] = { |
787 | &dev_attr_cid.attr, | |
788 | &dev_attr_csd.attr, | |
789 | &dev_attr_date.attr, | |
dfe86cba AH |
790 | &dev_attr_erase_size.attr, |
791 | &dev_attr_preferred_erase_size.attr, | |
51ec92e2 | 792 | &dev_attr_fwrev.attr, |
0f762426 | 793 | &dev_attr_ffu_capable.attr, |
51ec92e2 PO |
794 | &dev_attr_hwrev.attr, |
795 | &dev_attr_manfid.attr, | |
796 | &dev_attr_name.attr, | |
797 | &dev_attr_oemid.attr, | |
51e7e8b6 | 798 | &dev_attr_prv.attr, |
51ec92e2 | 799 | &dev_attr_serial.attr, |
709de99d CD |
800 | &dev_attr_enhanced_area_offset.attr, |
801 | &dev_attr_enhanced_area_size.attr, | |
188cc042 LP |
802 | &dev_attr_raw_rpmb_size_mult.attr, |
803 | &dev_attr_rel_sectors.attr, | |
5fb06af7 | 804 | &dev_attr_ocr.attr, |
6825a606 | 805 | &dev_attr_dsr.attr, |
51ec92e2 PO |
806 | NULL, |
807 | }; | |
d1e58212 | 808 | ATTRIBUTE_GROUPS(mmc_std); |
51ec92e2 PO |
809 | |
810 | static struct device_type mmc_type = { | |
d1e58212 | 811 | .groups = mmc_std_groups, |
51ec92e2 PO |
812 | }; |
813 | ||
b87d8dbf G |
814 | /* |
815 | * Select the PowerClass for the current bus width | |
816 | * If power class is defined for 4/8 bit bus in the | |
817 | * extended CSD register, select it by executing the | |
818 | * mmc_switch command. | |
819 | */ | |
2385049d SJ |
820 | static int __mmc_select_powerclass(struct mmc_card *card, |
821 | unsigned int bus_width) | |
b87d8dbf | 822 | { |
2385049d SJ |
823 | struct mmc_host *host = card->host; |
824 | struct mmc_ext_csd *ext_csd = &card->ext_csd; | |
60443712 | 825 | unsigned int pwrclass_val = 0; |
2385049d | 826 | int err = 0; |
b87d8dbf | 827 | |
b87d8dbf G |
828 | switch (1 << host->ios.vdd) { |
829 | case MMC_VDD_165_195: | |
2385049d SJ |
830 | if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) |
831 | pwrclass_val = ext_csd->raw_pwr_cl_26_195; | |
832 | else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR) | |
60443712 | 833 | pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? |
2385049d SJ |
834 | ext_csd->raw_pwr_cl_52_195 : |
835 | ext_csd->raw_pwr_cl_ddr_52_195; | |
836 | else if (host->ios.clock <= MMC_HS200_MAX_DTR) | |
837 | pwrclass_val = ext_csd->raw_pwr_cl_200_195; | |
b87d8dbf | 838 | break; |
93fc5a47 SJ |
839 | case MMC_VDD_27_28: |
840 | case MMC_VDD_28_29: | |
841 | case MMC_VDD_29_30: | |
842 | case MMC_VDD_30_31: | |
843 | case MMC_VDD_31_32: | |
b87d8dbf G |
844 | case MMC_VDD_32_33: |
845 | case MMC_VDD_33_34: | |
846 | case MMC_VDD_34_35: | |
847 | case MMC_VDD_35_36: | |
2385049d SJ |
848 | if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) |
849 | pwrclass_val = ext_csd->raw_pwr_cl_26_360; | |
850 | else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR) | |
60443712 | 851 | pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? |
2385049d SJ |
852 | ext_csd->raw_pwr_cl_52_360 : |
853 | ext_csd->raw_pwr_cl_ddr_52_360; | |
854 | else if (host->ios.clock <= MMC_HS200_MAX_DTR) | |
0a5b6438 SJ |
855 | pwrclass_val = (bus_width == EXT_CSD_DDR_BUS_WIDTH_8) ? |
856 | ext_csd->raw_pwr_cl_ddr_200_360 : | |
857 | ext_csd->raw_pwr_cl_200_360; | |
b87d8dbf G |
858 | break; |
859 | default: | |
6606110d JP |
860 | pr_warn("%s: Voltage range not supported for power class\n", |
861 | mmc_hostname(host)); | |
b87d8dbf G |
862 | return -EINVAL; |
863 | } | |
864 | ||
b87d8dbf G |
865 | if (bus_width & (EXT_CSD_BUS_WIDTH_8 | EXT_CSD_DDR_BUS_WIDTH_8)) |
866 | pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_8BIT_MASK) >> | |
867 | EXT_CSD_PWR_CL_8BIT_SHIFT; | |
868 | else | |
869 | pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_4BIT_MASK) >> | |
870 | EXT_CSD_PWR_CL_4BIT_SHIFT; | |
871 | ||
872 | /* If the power class is different from the default value */ | |
873 | if (pwrclass_val > 0) { | |
874 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
875 | EXT_CSD_POWER_CLASS, | |
876 | pwrclass_val, | |
71fe3eb0 | 877 | card->ext_csd.generic_cmd6_time); |
b87d8dbf G |
878 | } |
879 | ||
880 | return err; | |
881 | } | |
882 | ||
2385049d SJ |
883 | static int mmc_select_powerclass(struct mmc_card *card) |
884 | { | |
885 | struct mmc_host *host = card->host; | |
886 | u32 bus_width, ext_csd_bits; | |
887 | int err, ddr; | |
888 | ||
889 | /* Power class selection is supported for versions >= 4.0 */ | |
148bcab2 | 890 | if (!mmc_can_ext_csd(card)) |
2385049d SJ |
891 | return 0; |
892 | ||
893 | bus_width = host->ios.bus_width; | |
894 | /* Power class values are defined only for 4/8 bit bus */ | |
895 | if (bus_width == MMC_BUS_WIDTH_1) | |
896 | return 0; | |
897 | ||
898 | ddr = card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52; | |
899 | if (ddr) | |
900 | ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? | |
901 | EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; | |
902 | else | |
903 | ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? | |
904 | EXT_CSD_BUS_WIDTH_8 : EXT_CSD_BUS_WIDTH_4; | |
905 | ||
906 | err = __mmc_select_powerclass(card, ext_csd_bits); | |
907 | if (err) | |
908 | pr_warn("%s: power class selection to bus width %d ddr %d failed\n", | |
909 | mmc_hostname(host), 1 << bus_width, ddr); | |
910 | ||
911 | return err; | |
912 | } | |
913 | ||
a4924c71 | 914 | /* |
577fb131 | 915 | * Set the bus speed for the selected speed mode. |
a4924c71 | 916 | */ |
577fb131 SJ |
917 | static void mmc_set_bus_speed(struct mmc_card *card) |
918 | { | |
919 | unsigned int max_dtr = (unsigned int)-1; | |
920 | ||
0a5b6438 SJ |
921 | if ((mmc_card_hs200(card) || mmc_card_hs400(card)) && |
922 | max_dtr > card->ext_csd.hs200_max_dtr) | |
577fb131 SJ |
923 | max_dtr = card->ext_csd.hs200_max_dtr; |
924 | else if (mmc_card_hs(card) && max_dtr > card->ext_csd.hs_max_dtr) | |
925 | max_dtr = card->ext_csd.hs_max_dtr; | |
926 | else if (max_dtr > card->csd.max_dtr) | |
927 | max_dtr = card->csd.max_dtr; | |
928 | ||
929 | mmc_set_clock(card->host, max_dtr); | |
930 | } | |
931 | ||
932 | /* | |
933 | * Select the bus width amoung 4-bit and 8-bit(SDR). | |
934 | * If the bus width is changed successfully, return the selected width value. | |
935 | * Zero is returned instead of error value if the wide width is not supported. | |
936 | */ | |
937 | static int mmc_select_bus_width(struct mmc_card *card) | |
a4924c71 | 938 | { |
a4924c71 | 939 | static unsigned ext_csd_bits[] = { |
a4924c71 | 940 | EXT_CSD_BUS_WIDTH_8, |
577fb131 | 941 | EXT_CSD_BUS_WIDTH_4, |
a4924c71 G |
942 | }; |
943 | static unsigned bus_widths[] = { | |
a4924c71 | 944 | MMC_BUS_WIDTH_8, |
577fb131 | 945 | MMC_BUS_WIDTH_4, |
a4924c71 | 946 | }; |
577fb131 SJ |
947 | struct mmc_host *host = card->host; |
948 | unsigned idx, bus_width = 0; | |
949 | int err = 0; | |
a4924c71 | 950 | |
1c2d26e3 | 951 | if (!mmc_can_ext_csd(card) || |
577fb131 SJ |
952 | !(host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) |
953 | return 0; | |
a4924c71 | 954 | |
577fb131 | 955 | idx = (host->caps & MMC_CAP_8_BIT_DATA) ? 0 : 1; |
a4924c71 G |
956 | |
957 | /* | |
958 | * Unlike SD, MMC cards dont have a configuration register to notify | |
959 | * supported bus width. So bus test command should be run to identify | |
960 | * the supported bus width or compare the ext csd values of current | |
961 | * bus width and ext csd values of 1 bit mode read earlier. | |
962 | */ | |
577fb131 | 963 | for (; idx < ARRAY_SIZE(bus_widths); idx++) { |
a4924c71 G |
964 | /* |
965 | * Host is capable of 8bit transfer, then switch | |
966 | * the device to work in 8bit transfer mode. If the | |
967 | * mmc switch command returns error then switch to | |
968 | * 4bit transfer mode. On success set the corresponding | |
969 | * bus width on the host. | |
970 | */ | |
971 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
972 | EXT_CSD_BUS_WIDTH, | |
973 | ext_csd_bits[idx], | |
974 | card->ext_csd.generic_cmd6_time); | |
975 | if (err) | |
976 | continue; | |
977 | ||
577fb131 SJ |
978 | bus_width = bus_widths[idx]; |
979 | mmc_set_bus_width(host, bus_width); | |
a4924c71 | 980 | |
577fb131 SJ |
981 | /* |
982 | * If controller can't handle bus width test, | |
983 | * compare ext_csd previously read in 1 bit mode | |
984 | * against ext_csd at new bus width | |
985 | */ | |
a4924c71 | 986 | if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST)) |
577fb131 | 987 | err = mmc_compare_ext_csds(card, bus_width); |
a4924c71 | 988 | else |
577fb131 SJ |
989 | err = mmc_bus_test(card, bus_width); |
990 | ||
991 | if (!err) { | |
992 | err = bus_width; | |
a4924c71 | 993 | break; |
577fb131 SJ |
994 | } else { |
995 | pr_warn("%s: switch to bus width %d failed\n", | |
ed9feec7 | 996 | mmc_hostname(host), 1 << bus_width); |
577fb131 | 997 | } |
a4924c71 G |
998 | } |
999 | ||
577fb131 SJ |
1000 | return err; |
1001 | } | |
1002 | ||
08573eaf CJ |
1003 | /* Caller must hold re-tuning */ |
1004 | static int mmc_switch_status(struct mmc_card *card) | |
1005 | { | |
1006 | u32 status; | |
1007 | int err; | |
1008 | ||
1009 | err = mmc_send_status(card, &status); | |
1010 | if (err) | |
1011 | return err; | |
1012 | ||
1013 | return mmc_switch_status_error(card->host, status); | |
1014 | } | |
1015 | ||
577fb131 SJ |
1016 | /* |
1017 | * Switch to the high-speed mode | |
1018 | */ | |
1019 | static int mmc_select_hs(struct mmc_card *card) | |
1020 | { | |
1021 | int err; | |
1022 | ||
1023 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1024 | EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS, | |
1025 | card->ext_csd.generic_cmd6_time, | |
08573eaf CJ |
1026 | true, false, true); |
1027 | if (!err) { | |
577fb131 | 1028 | mmc_set_timing(card->host, MMC_TIMING_MMC_HS); |
08573eaf CJ |
1029 | err = mmc_switch_status(card); |
1030 | } | |
577fb131 | 1031 | |
67d35960 JL |
1032 | if (err) |
1033 | pr_warn("%s: switch to high-speed failed, err:%d\n", | |
1034 | mmc_hostname(card->host), err); | |
1035 | ||
577fb131 SJ |
1036 | return err; |
1037 | } | |
1038 | ||
1039 | /* | |
1040 | * Activate wide bus and DDR if supported. | |
1041 | */ | |
1042 | static int mmc_select_hs_ddr(struct mmc_card *card) | |
1043 | { | |
1044 | struct mmc_host *host = card->host; | |
1045 | u32 bus_width, ext_csd_bits; | |
1046 | int err = 0; | |
1047 | ||
1048 | if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52)) | |
1049 | return 0; | |
1050 | ||
1051 | bus_width = host->ios.bus_width; | |
1052 | if (bus_width == MMC_BUS_WIDTH_1) | |
1053 | return 0; | |
1054 | ||
1055 | ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? | |
1056 | EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; | |
1057 | ||
1058 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1059 | EXT_CSD_BUS_WIDTH, | |
1060 | ext_csd_bits, | |
1061 | card->ext_csd.generic_cmd6_time); | |
1062 | if (err) { | |
4b75bffc | 1063 | pr_err("%s: switch to bus width %d ddr failed\n", |
577fb131 SJ |
1064 | mmc_hostname(host), 1 << bus_width); |
1065 | return err; | |
1066 | } | |
1067 | ||
1068 | /* | |
1069 | * eMMC cards can support 3.3V to 1.2V i/o (vccq) | |
1070 | * signaling. | |
1071 | * | |
1072 | * EXT_CSD_CARD_TYPE_DDR_1_8V means 3.3V or 1.8V vccq. | |
1073 | * | |
1074 | * 1.8V vccq at 3.3V core voltage (vcc) is not required | |
1075 | * in the JEDEC spec for DDR. | |
1076 | * | |
312449ef CD |
1077 | * Even (e)MMC card can support 3.3v to 1.2v vccq, but not all |
1078 | * host controller can support this, like some of the SDHCI | |
1079 | * controller which connect to an eMMC device. Some of these | |
1080 | * host controller still needs to use 1.8v vccq for supporting | |
1081 | * DDR mode. | |
1082 | * | |
1083 | * So the sequence will be: | |
1084 | * if (host and device can both support 1.2v IO) | |
1085 | * use 1.2v IO; | |
1086 | * else if (host and device can both support 1.8v IO) | |
1087 | * use 1.8v IO; | |
1088 | * so if host and device can only support 3.3v IO, this is the | |
1089 | * last choice. | |
577fb131 SJ |
1090 | * |
1091 | * WARNING: eMMC rules are NOT the same as SD DDR | |
1092 | */ | |
312449ef CD |
1093 | err = -EINVAL; |
1094 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_2V) | |
1095 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); | |
577fb131 | 1096 | |
312449ef CD |
1097 | if (err && (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_8V)) |
1098 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); | |
1099 | ||
1100 | /* make sure vccq is 3.3v after switching disaster */ | |
1101 | if (err) | |
1102 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330); | |
1103 | ||
1104 | if (!err) | |
1105 | mmc_set_timing(host, MMC_TIMING_MMC_DDR52); | |
577fb131 SJ |
1106 | |
1107 | return err; | |
1108 | } | |
1109 | ||
0a5b6438 SJ |
1110 | static int mmc_select_hs400(struct mmc_card *card) |
1111 | { | |
1112 | struct mmc_host *host = card->host; | |
51b12f77 | 1113 | unsigned int max_dtr; |
0a5b6438 | 1114 | int err = 0; |
cc4f414c | 1115 | u8 val; |
0a5b6438 SJ |
1116 | |
1117 | /* | |
1118 | * HS400 mode requires 8-bit bus width | |
1119 | */ | |
1120 | if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 && | |
1121 | host->ios.bus_width == MMC_BUS_WIDTH_8)) | |
1122 | return 0; | |
1123 | ||
51b12f77 | 1124 | /* Switch card to HS mode */ |
adb24d42 | 1125 | val = EXT_CSD_TIMING_HS; |
0a5b6438 | 1126 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
cc4f414c | 1127 | EXT_CSD_HS_TIMING, val, |
0a5b6438 | 1128 | card->ext_csd.generic_cmd6_time, |
08573eaf | 1129 | true, false, true); |
0a5b6438 | 1130 | if (err) { |
4b75bffc | 1131 | pr_err("%s: switch to high-speed from hs200 failed, err:%d\n", |
0a5b6438 SJ |
1132 | mmc_hostname(host), err); |
1133 | return err; | |
1134 | } | |
1135 | ||
51b12f77 AH |
1136 | /* Set host controller to HS timing */ |
1137 | mmc_set_timing(card->host, MMC_TIMING_MMC_HS); | |
1138 | ||
649c6059 ZX |
1139 | /* Reduce frequency to HS frequency */ |
1140 | max_dtr = card->ext_csd.hs_max_dtr; | |
1141 | mmc_set_clock(host, max_dtr); | |
1142 | ||
08573eaf CJ |
1143 | err = mmc_switch_status(card); |
1144 | if (err) | |
1145 | goto out_err; | |
d2302933 AH |
1146 | |
1147 | /* Switch card to DDR */ | |
0a5b6438 SJ |
1148 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
1149 | EXT_CSD_BUS_WIDTH, | |
1150 | EXT_CSD_DDR_BUS_WIDTH_8, | |
1151 | card->ext_csd.generic_cmd6_time); | |
1152 | if (err) { | |
4b75bffc | 1153 | pr_err("%s: switch to bus width for hs400 failed, err:%d\n", |
0a5b6438 SJ |
1154 | mmc_hostname(host), err); |
1155 | return err; | |
1156 | } | |
1157 | ||
d2302933 | 1158 | /* Switch card to HS400 */ |
cc4f414c AH |
1159 | val = EXT_CSD_TIMING_HS400 | |
1160 | card->drive_strength << EXT_CSD_DRV_STR_SHIFT; | |
0a5b6438 | 1161 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
cc4f414c | 1162 | EXT_CSD_HS_TIMING, val, |
0a5b6438 | 1163 | card->ext_csd.generic_cmd6_time, |
08573eaf | 1164 | true, false, true); |
0a5b6438 | 1165 | if (err) { |
4b75bffc | 1166 | pr_err("%s: switch to hs400 failed, err:%d\n", |
0a5b6438 SJ |
1167 | mmc_hostname(host), err); |
1168 | return err; | |
1169 | } | |
1170 | ||
d2302933 | 1171 | /* Set host controller to HS400 timing and frequency */ |
0a5b6438 SJ |
1172 | mmc_set_timing(host, MMC_TIMING_MMC_HS400); |
1173 | mmc_set_bus_speed(card); | |
1174 | ||
08573eaf CJ |
1175 | err = mmc_switch_status(card); |
1176 | if (err) | |
1177 | goto out_err; | |
d2302933 | 1178 | |
0a5b6438 | 1179 | return 0; |
d2302933 AH |
1180 | |
1181 | out_err: | |
1182 | pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), | |
1183 | __func__, err); | |
1184 | return err; | |
0a5b6438 SJ |
1185 | } |
1186 | ||
6376f69d AH |
1187 | int mmc_hs200_to_hs400(struct mmc_card *card) |
1188 | { | |
1189 | return mmc_select_hs400(card); | |
1190 | } | |
1191 | ||
6376f69d AH |
1192 | int mmc_hs400_to_hs200(struct mmc_card *card) |
1193 | { | |
1194 | struct mmc_host *host = card->host; | |
6376f69d AH |
1195 | unsigned int max_dtr; |
1196 | int err; | |
cc4f414c | 1197 | u8 val; |
6376f69d | 1198 | |
6376f69d AH |
1199 | /* Reduce frequency to HS */ |
1200 | max_dtr = card->ext_csd.hs_max_dtr; | |
1201 | mmc_set_clock(host, max_dtr); | |
1202 | ||
1203 | /* Switch HS400 to HS DDR */ | |
adb24d42 | 1204 | val = EXT_CSD_TIMING_HS; |
6376f69d | 1205 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, |
cc4f414c | 1206 | val, card->ext_csd.generic_cmd6_time, |
08573eaf | 1207 | true, false, true); |
6376f69d AH |
1208 | if (err) |
1209 | goto out_err; | |
1210 | ||
1211 | mmc_set_timing(host, MMC_TIMING_MMC_DDR52); | |
1212 | ||
08573eaf CJ |
1213 | err = mmc_switch_status(card); |
1214 | if (err) | |
1215 | goto out_err; | |
6376f69d AH |
1216 | |
1217 | /* Switch HS DDR to HS */ | |
1218 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BUS_WIDTH, | |
1219 | EXT_CSD_BUS_WIDTH_8, card->ext_csd.generic_cmd6_time, | |
08573eaf | 1220 | true, false, true); |
6376f69d AH |
1221 | if (err) |
1222 | goto out_err; | |
1223 | ||
1224 | mmc_set_timing(host, MMC_TIMING_MMC_HS); | |
1225 | ||
08573eaf CJ |
1226 | err = mmc_switch_status(card); |
1227 | if (err) | |
1228 | goto out_err; | |
6376f69d AH |
1229 | |
1230 | /* Switch HS to HS200 */ | |
cc4f414c AH |
1231 | val = EXT_CSD_TIMING_HS200 | |
1232 | card->drive_strength << EXT_CSD_DRV_STR_SHIFT; | |
6376f69d | 1233 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, |
08573eaf CJ |
1234 | val, card->ext_csd.generic_cmd6_time, |
1235 | true, false, true); | |
6376f69d AH |
1236 | if (err) |
1237 | goto out_err; | |
1238 | ||
1239 | mmc_set_timing(host, MMC_TIMING_MMC_HS200); | |
1240 | ||
08573eaf CJ |
1241 | err = mmc_switch_status(card); |
1242 | if (err) | |
1243 | goto out_err; | |
6376f69d AH |
1244 | |
1245 | mmc_set_bus_speed(card); | |
1246 | ||
1247 | return 0; | |
1248 | ||
1249 | out_err: | |
1250 | pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), | |
1251 | __func__, err); | |
1252 | return err; | |
1253 | } | |
1254 | ||
81ac2af6 SL |
1255 | static int mmc_select_hs400es(struct mmc_card *card) |
1256 | { | |
1257 | struct mmc_host *host = card->host; | |
1258 | int err = 0; | |
1259 | u8 val; | |
1260 | ||
1261 | if (!(host->caps & MMC_CAP_8_BIT_DATA)) { | |
1262 | err = -ENOTSUPP; | |
1263 | goto out_err; | |
1264 | } | |
1265 | ||
1266 | err = mmc_select_bus_width(card); | |
1267 | if (err < 0) | |
1268 | goto out_err; | |
1269 | ||
1270 | /* Switch card to HS mode */ | |
1271 | err = mmc_select_hs(card); | |
67d35960 | 1272 | if (err) |
81ac2af6 | 1273 | goto out_err; |
81ac2af6 SL |
1274 | |
1275 | err = mmc_switch_status(card); | |
1276 | if (err) | |
1277 | goto out_err; | |
1278 | ||
1279 | /* Switch card to DDR with strobe bit */ | |
1280 | val = EXT_CSD_DDR_BUS_WIDTH_8 | EXT_CSD_BUS_WIDTH_STROBE; | |
1281 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1282 | EXT_CSD_BUS_WIDTH, | |
1283 | val, | |
1284 | card->ext_csd.generic_cmd6_time); | |
1285 | if (err) { | |
1286 | pr_err("%s: switch to bus width for hs400es failed, err:%d\n", | |
1287 | mmc_hostname(host), err); | |
1288 | goto out_err; | |
1289 | } | |
1290 | ||
1291 | /* Switch card to HS400 */ | |
1292 | val = EXT_CSD_TIMING_HS400 | | |
1293 | card->drive_strength << EXT_CSD_DRV_STR_SHIFT; | |
1294 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1295 | EXT_CSD_HS_TIMING, val, | |
1296 | card->ext_csd.generic_cmd6_time, | |
1297 | true, false, true); | |
1298 | if (err) { | |
1299 | pr_err("%s: switch to hs400es failed, err:%d\n", | |
1300 | mmc_hostname(host), err); | |
1301 | goto out_err; | |
1302 | } | |
1303 | ||
1304 | /* Set host controller to HS400 timing and frequency */ | |
1305 | mmc_set_timing(host, MMC_TIMING_MMC_HS400); | |
1306 | ||
1307 | /* Controller enable enhanced strobe function */ | |
1308 | host->ios.enhanced_strobe = true; | |
1309 | if (host->ops->hs400_enhanced_strobe) | |
1310 | host->ops->hs400_enhanced_strobe(host, &host->ios); | |
1311 | ||
1312 | err = mmc_switch_status(card); | |
1313 | if (err) | |
1314 | goto out_err; | |
1315 | ||
1316 | return 0; | |
1317 | ||
1318 | out_err: | |
1319 | pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), | |
1320 | __func__, err); | |
1321 | return err; | |
1322 | } | |
1323 | ||
cc4f414c AH |
1324 | static void mmc_select_driver_type(struct mmc_card *card) |
1325 | { | |
1326 | int card_drv_type, drive_strength, drv_type; | |
1327 | ||
1328 | card_drv_type = card->ext_csd.raw_driver_strength | | |
1329 | mmc_driver_type_mask(0); | |
1330 | ||
1331 | drive_strength = mmc_select_drive_strength(card, | |
1332 | card->ext_csd.hs200_max_dtr, | |
1333 | card_drv_type, &drv_type); | |
1334 | ||
1335 | card->drive_strength = drive_strength; | |
1336 | ||
1337 | if (drv_type) | |
1338 | mmc_set_driver_type(card->host, drv_type); | |
1339 | } | |
1340 | ||
577fb131 SJ |
1341 | /* |
1342 | * For device supporting HS200 mode, the following sequence | |
1343 | * should be done before executing the tuning process. | |
1344 | * 1. set the desired bus width(4-bit or 8-bit, 1-bit is not supported) | |
1345 | * 2. switch to HS200 mode | |
1346 | * 3. set the clock to > 52Mhz and <=200MHz | |
1347 | */ | |
1348 | static int mmc_select_hs200(struct mmc_card *card) | |
1349 | { | |
1350 | struct mmc_host *host = card->host; | |
e51534c8 | 1351 | unsigned int old_timing, old_signal_voltage; |
577fb131 | 1352 | int err = -EINVAL; |
cc4f414c | 1353 | u8 val; |
577fb131 | 1354 | |
e51534c8 | 1355 | old_signal_voltage = host->ios.signal_voltage; |
577fb131 SJ |
1356 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_2V) |
1357 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); | |
1358 | ||
1359 | if (err && card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_8V) | |
1360 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); | |
1361 | ||
1362 | /* If fails try again during next card power cycle */ | |
1363 | if (err) | |
e51534c8 | 1364 | return err; |
577fb131 | 1365 | |
cc4f414c AH |
1366 | mmc_select_driver_type(card); |
1367 | ||
577fb131 SJ |
1368 | /* |
1369 | * Set the bus width(4 or 8) with host's support and | |
1370 | * switch to HS200 mode if bus width is set successfully. | |
1371 | */ | |
1372 | err = mmc_select_bus_width(card); | |
8b7be8f2 | 1373 | if (err > 0) { |
cc4f414c AH |
1374 | val = EXT_CSD_TIMING_HS200 | |
1375 | card->drive_strength << EXT_CSD_DRV_STR_SHIFT; | |
4509f847 | 1376 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
cc4f414c | 1377 | EXT_CSD_HS_TIMING, val, |
577fb131 | 1378 | card->ext_csd.generic_cmd6_time, |
08573eaf | 1379 | true, false, true); |
1815e61b AH |
1380 | if (err) |
1381 | goto err; | |
1382 | old_timing = host->ios.timing; | |
1383 | mmc_set_timing(host, MMC_TIMING_MMC_HS200); | |
08573eaf CJ |
1384 | |
1385 | err = mmc_switch_status(card); | |
1386 | /* | |
1387 | * mmc_select_timing() assumes timing has not changed if | |
1388 | * it is a switch error. | |
1389 | */ | |
1390 | if (err == -EBADMSG) | |
1391 | mmc_set_timing(host, old_timing); | |
577fb131 | 1392 | } |
a4924c71 | 1393 | err: |
e51534c8 DA |
1394 | if (err) { |
1395 | /* fall back to the old signal voltage, if fails report error */ | |
1396 | if (__mmc_set_signal_voltage(host, old_signal_voltage)) | |
1397 | err = -EIO; | |
1398 | ||
1815e61b AH |
1399 | pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), |
1400 | __func__, err); | |
e51534c8 | 1401 | } |
a4924c71 G |
1402 | return err; |
1403 | } | |
1404 | ||
577fb131 | 1405 | /* |
81ac2af6 | 1406 | * Activate High Speed, HS200 or HS400ES mode if supported. |
577fb131 SJ |
1407 | */ |
1408 | static int mmc_select_timing(struct mmc_card *card) | |
1409 | { | |
1410 | int err = 0; | |
1411 | ||
148bcab2 | 1412 | if (!mmc_can_ext_csd(card)) |
577fb131 SJ |
1413 | goto bus_speed; |
1414 | ||
81ac2af6 SL |
1415 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400ES) |
1416 | err = mmc_select_hs400es(card); | |
1417 | else if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200) | |
577fb131 SJ |
1418 | err = mmc_select_hs200(card); |
1419 | else if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS) | |
1420 | err = mmc_select_hs(card); | |
1421 | ||
1422 | if (err && err != -EBADMSG) | |
1423 | return err; | |
1424 | ||
577fb131 SJ |
1425 | bus_speed: |
1426 | /* | |
1427 | * Set the bus speed to the selected bus timing. | |
1428 | * If timing is not selected, backward compatible is the default. | |
1429 | */ | |
1430 | mmc_set_bus_speed(card); | |
0400ed0a | 1431 | return 0; |
577fb131 SJ |
1432 | } |
1433 | ||
1434 | /* | |
1435 | * Execute tuning sequence to seek the proper bus operating | |
0a5b6438 | 1436 | * conditions for HS200 and HS400, which sends CMD21 to the device. |
577fb131 SJ |
1437 | */ |
1438 | static int mmc_hs200_tuning(struct mmc_card *card) | |
1439 | { | |
1440 | struct mmc_host *host = card->host; | |
577fb131 | 1441 | |
0a5b6438 SJ |
1442 | /* |
1443 | * Timing should be adjusted to the HS400 target | |
1444 | * operation frequency for tuning process | |
1445 | */ | |
1446 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 && | |
1447 | host->ios.bus_width == MMC_BUS_WIDTH_8) | |
1448 | if (host->ops->prepare_hs400_tuning) | |
1449 | host->ops->prepare_hs400_tuning(host, &host->ios); | |
1450 | ||
63e415c6 | 1451 | return mmc_execute_tuning(card); |
577fb131 SJ |
1452 | } |
1453 | ||
7ea239d9 | 1454 | /* |
6abaa0c9 PO |
1455 | * Handle the detection and initialisation of a card. |
1456 | * | |
8769392b | 1457 | * In the case of a resume, "oldcard" will contain the card |
6abaa0c9 | 1458 | * we're trying to reinitialise. |
7ea239d9 | 1459 | */ |
8c75deae | 1460 | static int mmc_init_card(struct mmc_host *host, u32 ocr, |
6abaa0c9 | 1461 | struct mmc_card *oldcard) |
7ea239d9 PO |
1462 | { |
1463 | struct mmc_card *card; | |
577fb131 | 1464 | int err; |
7ea239d9 | 1465 | u32 cid[4]; |
b676f039 | 1466 | u32 rocr; |
7ea239d9 PO |
1467 | |
1468 | BUG_ON(!host); | |
d84075c8 | 1469 | WARN_ON(!host->claimed); |
7ea239d9 | 1470 | |
44669034 SNX |
1471 | /* Set correct bus mode for MMC before attempting init */ |
1472 | if (!mmc_host_is_spi(host)) | |
1473 | mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); | |
1474 | ||
7ea239d9 PO |
1475 | /* |
1476 | * Since we're changing the OCR value, we seem to | |
1477 | * need to tell some cards to go back to the idle | |
1478 | * state. We wait 1ms to give cards time to | |
1479 | * respond. | |
c3805467 | 1480 | * mmc_go_idle is needed for eMMC that are asleep |
7ea239d9 PO |
1481 | */ |
1482 | mmc_go_idle(host); | |
1483 | ||
1484 | /* The extra bit indicates that we support high capacity */ | |
b676f039 | 1485 | err = mmc_send_op_cond(host, ocr | (1 << 30), &rocr); |
17b0429d | 1486 | if (err) |
6abaa0c9 | 1487 | goto err; |
7ea239d9 | 1488 | |
af517150 DB |
1489 | /* |
1490 | * For SPI, enable CRC as appropriate. | |
1491 | */ | |
1492 | if (mmc_host_is_spi(host)) { | |
1493 | err = mmc_spi_set_crc(host, use_spi_crc); | |
1494 | if (err) | |
1495 | goto err; | |
1496 | } | |
1497 | ||
7ea239d9 PO |
1498 | /* |
1499 | * Fetch CID from card. | |
1500 | */ | |
af517150 DB |
1501 | if (mmc_host_is_spi(host)) |
1502 | err = mmc_send_cid(host, cid); | |
1503 | else | |
1504 | err = mmc_all_send_cid(host, cid); | |
17b0429d | 1505 | if (err) |
7ea239d9 PO |
1506 | goto err; |
1507 | ||
6abaa0c9 | 1508 | if (oldcard) { |
adf66a0d PO |
1509 | if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) { |
1510 | err = -ENOENT; | |
6abaa0c9 | 1511 | goto err; |
adf66a0d | 1512 | } |
6abaa0c9 PO |
1513 | |
1514 | card = oldcard; | |
1515 | } else { | |
1516 | /* | |
1517 | * Allocate card structure. | |
1518 | */ | |
51ec92e2 | 1519 | card = mmc_alloc_card(host, &mmc_type); |
adf66a0d PO |
1520 | if (IS_ERR(card)) { |
1521 | err = PTR_ERR(card); | |
6abaa0c9 | 1522 | goto err; |
adf66a0d | 1523 | } |
7ea239d9 | 1524 | |
69041150 | 1525 | card->ocr = ocr; |
6abaa0c9 PO |
1526 | card->type = MMC_TYPE_MMC; |
1527 | card->rca = 1; | |
1528 | memcpy(card->raw_cid, cid, sizeof(card->raw_cid)); | |
1529 | } | |
7ea239d9 | 1530 | |
eac86321 DA |
1531 | /* |
1532 | * Call the optional HC's init_card function to handle quirks. | |
1533 | */ | |
1534 | if (host->ops->init_card) | |
1535 | host->ops->init_card(host, card); | |
1536 | ||
7ea239d9 | 1537 | /* |
af517150 | 1538 | * For native busses: set card RCA and quit open drain mode. |
7ea239d9 | 1539 | */ |
af517150 DB |
1540 | if (!mmc_host_is_spi(host)) { |
1541 | err = mmc_set_relative_addr(card); | |
1542 | if (err) | |
1543 | goto free_card; | |
7ea239d9 | 1544 | |
af517150 DB |
1545 | mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL); |
1546 | } | |
7ea239d9 | 1547 | |
6abaa0c9 PO |
1548 | if (!oldcard) { |
1549 | /* | |
1550 | * Fetch CSD from card. | |
1551 | */ | |
1552 | err = mmc_send_csd(card, card->raw_csd); | |
17b0429d | 1553 | if (err) |
6abaa0c9 | 1554 | goto free_card; |
7ea239d9 | 1555 | |
bd766312 | 1556 | err = mmc_decode_csd(card); |
adf66a0d | 1557 | if (err) |
bd766312 PO |
1558 | goto free_card; |
1559 | err = mmc_decode_cid(card); | |
adf66a0d | 1560 | if (err) |
bd766312 | 1561 | goto free_card; |
6abaa0c9 | 1562 | } |
7ea239d9 | 1563 | |
3d705d14 SH |
1564 | /* |
1565 | * handling only for cards supporting DSR and hosts requesting | |
1566 | * DSR configuration | |
1567 | */ | |
1568 | if (card->csd.dsr_imp && host->dsr_req) | |
1569 | mmc_set_dsr(host); | |
1570 | ||
7ea239d9 | 1571 | /* |
89a73cf5 | 1572 | * Select card, as all following commands rely on that. |
7ea239d9 | 1573 | */ |
af517150 DB |
1574 | if (!mmc_host_is_spi(host)) { |
1575 | err = mmc_select_card(card); | |
1576 | if (err) | |
1577 | goto free_card; | |
1578 | } | |
7ea239d9 | 1579 | |
6abaa0c9 | 1580 | if (!oldcard) { |
076ec38a UH |
1581 | /* Read extended CSD. */ |
1582 | err = mmc_read_ext_csd(card); | |
17b0429d | 1583 | if (err) |
6abaa0c9 | 1584 | goto free_card; |
b676f039 | 1585 | |
87e88659 MY |
1586 | /* |
1587 | * If doing byte addressing, check if required to do sector | |
b676f039 PR |
1588 | * addressing. Handle the case of <2GB cards needing sector |
1589 | * addressing. See section 8.1 JEDEC Standard JED84-A441; | |
1590 | * ocr register has bit 30 set for sector addressing. | |
1591 | */ | |
87e88659 | 1592 | if (rocr & BIT(30)) |
b676f039 PR |
1593 | mmc_card_set_blockaddr(card); |
1594 | ||
dfe86cba AH |
1595 | /* Erase size depends on CSD and Extended CSD */ |
1596 | mmc_set_erase_size(card); | |
6abaa0c9 | 1597 | } |
7ea239d9 | 1598 | |
709de99d CD |
1599 | /* |
1600 | * If enhanced_area_en is TRUE, host needs to enable ERASE_GRP_DEF | |
25985edc | 1601 | * bit. This bit will be lost every time after a reset or power off. |
709de99d | 1602 | */ |
69803d4f | 1603 | if (card->ext_csd.partition_setting_completed || |
83bb24aa | 1604 | (card->ext_csd.rev >= 3 && (host->caps2 & MMC_CAP2_HC_ERASE_SZ))) { |
709de99d | 1605 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
b23cf0bd SJ |
1606 | EXT_CSD_ERASE_GROUP_DEF, 1, |
1607 | card->ext_csd.generic_cmd6_time); | |
709de99d CD |
1608 | |
1609 | if (err && err != -EBADMSG) | |
1610 | goto free_card; | |
1611 | ||
1612 | if (err) { | |
1613 | err = 0; | |
1614 | /* | |
1615 | * Just disable enhanced area off & sz | |
1616 | * will try to enable ERASE_GROUP_DEF | |
1617 | * during next time reinit | |
1618 | */ | |
1619 | card->ext_csd.enhanced_area_offset = -EINVAL; | |
1620 | card->ext_csd.enhanced_area_size = -EINVAL; | |
1621 | } else { | |
1622 | card->ext_csd.erase_group_def = 1; | |
1623 | /* | |
1624 | * enable ERASE_GRP_DEF successfully. | |
1625 | * This will affect the erase size, so | |
1626 | * here need to reset erase size | |
1627 | */ | |
1628 | mmc_set_erase_size(card); | |
1629 | } | |
1630 | } | |
1631 | ||
41e2a489 PR |
1632 | /* |
1633 | * Ensure eMMC user default partition is enabled | |
1634 | */ | |
371a689f AW |
1635 | if (card->ext_csd.part_config & EXT_CSD_PART_CONFIG_ACC_MASK) { |
1636 | card->ext_csd.part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK; | |
1637 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONFIG, | |
1638 | card->ext_csd.part_config, | |
1639 | card->ext_csd.part_time); | |
1640 | if (err && err != -EBADMSG) | |
1641 | goto free_card; | |
41e2a489 PR |
1642 | } |
1643 | ||
bec8726a | 1644 | /* |
43235679 | 1645 | * Enable power_off_notification byte in the ext_csd register |
bec8726a | 1646 | */ |
43235679 | 1647 | if (card->ext_csd.rev >= 6) { |
bec8726a G |
1648 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
1649 | EXT_CSD_POWER_OFF_NOTIFICATION, | |
1650 | EXT_CSD_POWER_ON, | |
1651 | card->ext_csd.generic_cmd6_time); | |
1652 | if (err && err != -EBADMSG) | |
1653 | goto free_card; | |
bec8726a | 1654 | |
96a85d54 G |
1655 | /* |
1656 | * The err can be -EBADMSG or 0, | |
1657 | * so check for success and update the flag | |
1658 | */ | |
1659 | if (!err) | |
e6c08586 | 1660 | card->ext_csd.power_off_notification = EXT_CSD_POWER_ON; |
96a85d54 | 1661 | } |
bec8726a | 1662 | |
89a73cf5 | 1663 | /* |
577fb131 | 1664 | * Select timing interface |
dfc13e84 | 1665 | */ |
577fb131 SJ |
1666 | err = mmc_select_timing(card); |
1667 | if (err) | |
1668 | goto free_card; | |
dfc13e84 | 1669 | |
a4924c71 | 1670 | if (mmc_card_hs200(card)) { |
577fb131 SJ |
1671 | err = mmc_hs200_tuning(card); |
1672 | if (err) | |
4b75bffc | 1673 | goto free_card; |
0a5b6438 SJ |
1674 | |
1675 | err = mmc_select_hs400(card); | |
1676 | if (err) | |
4b75bffc | 1677 | goto free_card; |
577fb131 SJ |
1678 | } else if (mmc_card_hs(card)) { |
1679 | /* Select the desired bus width optionally */ | |
1680 | err = mmc_select_bus_width(card); | |
8b7be8f2 | 1681 | if (err > 0) { |
577fb131 SJ |
1682 | err = mmc_select_hs_ddr(card); |
1683 | if (err) | |
4b75bffc | 1684 | goto free_card; |
ef0b27d4 | 1685 | } |
89a73cf5 PO |
1686 | } |
1687 | ||
2385049d SJ |
1688 | /* |
1689 | * Choose the power class with selected bus interface | |
1690 | */ | |
1691 | mmc_select_powerclass(card); | |
1692 | ||
52d0974e SJ |
1693 | /* |
1694 | * Enable HPI feature (if supported) | |
1695 | */ | |
1696 | if (card->ext_csd.hpi) { | |
1697 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1698 | EXT_CSD_HPI_MGMT, 1, | |
1699 | card->ext_csd.generic_cmd6_time); | |
1700 | if (err && err != -EBADMSG) | |
1701 | goto free_card; | |
1702 | if (err) { | |
6606110d JP |
1703 | pr_warn("%s: Enabling HPI failed\n", |
1704 | mmc_hostname(card->host)); | |
52d0974e SJ |
1705 | err = 0; |
1706 | } else | |
1707 | card->ext_csd.hpi_en = 1; | |
1708 | } | |
1709 | ||
881d1c25 SJ |
1710 | /* |
1711 | * If cache size is higher than 0, this indicates | |
1712 | * the existence of cache and it can be turned on. | |
1713 | */ | |
5320226a P |
1714 | if (!mmc_card_broken_hpi(card) && |
1715 | card->ext_csd.cache_size > 0) { | |
881d1c25 | 1716 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
8bc0678b SJ |
1717 | EXT_CSD_CACHE_CTRL, 1, |
1718 | card->ext_csd.generic_cmd6_time); | |
881d1c25 SJ |
1719 | if (err && err != -EBADMSG) |
1720 | goto free_card; | |
1721 | ||
1722 | /* | |
1723 | * Only if no error, cache is turned on successfully. | |
1724 | */ | |
8bc0678b | 1725 | if (err) { |
6606110d JP |
1726 | pr_warn("%s: Cache is supported, but failed to turn on (%d)\n", |
1727 | mmc_hostname(card->host), err); | |
8bc0678b SJ |
1728 | card->ext_csd.cache_ctrl = 0; |
1729 | err = 0; | |
1730 | } else { | |
1731 | card->ext_csd.cache_ctrl = 1; | |
1732 | } | |
881d1c25 SJ |
1733 | } |
1734 | ||
abd9ac14 SJ |
1735 | /* |
1736 | * The mandatory minimum values are defined for packed command. | |
1737 | * read: 5, write: 3 | |
1738 | */ | |
1739 | if (card->ext_csd.max_packed_writes >= 3 && | |
1740 | card->ext_csd.max_packed_reads >= 5 && | |
1741 | host->caps2 & MMC_CAP2_PACKED_CMD) { | |
1742 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1743 | EXT_CSD_EXP_EVENTS_CTRL, | |
1744 | EXT_CSD_PACKED_EVENT_EN, | |
1745 | card->ext_csd.generic_cmd6_time); | |
1746 | if (err && err != -EBADMSG) | |
1747 | goto free_card; | |
1748 | if (err) { | |
1749 | pr_warn("%s: Enabling packed event failed\n", | |
1750 | mmc_hostname(card->host)); | |
1751 | card->ext_csd.packed_event_en = 0; | |
1752 | err = 0; | |
1753 | } else { | |
1754 | card->ext_csd.packed_event_en = 1; | |
1755 | } | |
1756 | } | |
1757 | ||
6abaa0c9 PO |
1758 | if (!oldcard) |
1759 | host->card = card; | |
1760 | ||
17b0429d | 1761 | return 0; |
6abaa0c9 PO |
1762 | |
1763 | free_card: | |
1764 | if (!oldcard) | |
1765 | mmc_remove_card(card); | |
1766 | err: | |
adf66a0d | 1767 | return err; |
6abaa0c9 PO |
1768 | } |
1769 | ||
07a68216 UH |
1770 | static int mmc_can_sleep(struct mmc_card *card) |
1771 | { | |
1772 | return (card && card->ext_csd.rev >= 3); | |
1773 | } | |
1774 | ||
1775 | static int mmc_sleep(struct mmc_host *host) | |
1776 | { | |
1777 | struct mmc_command cmd = {0}; | |
1778 | struct mmc_card *card = host->card; | |
cb962e04 | 1779 | unsigned int timeout_ms = DIV_ROUND_UP(card->ext_csd.sa_timeout, 10000); |
07a68216 UH |
1780 | int err; |
1781 | ||
436f8daa AH |
1782 | /* Re-tuning can't be done once the card is deselected */ |
1783 | mmc_retune_hold(host); | |
1784 | ||
07a68216 UH |
1785 | err = mmc_deselect_cards(host); |
1786 | if (err) | |
436f8daa | 1787 | goto out_release; |
07a68216 UH |
1788 | |
1789 | cmd.opcode = MMC_SLEEP_AWAKE; | |
1790 | cmd.arg = card->rca << 16; | |
1791 | cmd.arg |= 1 << 15; | |
1792 | ||
cb962e04 UH |
1793 | /* |
1794 | * If the max_busy_timeout of the host is specified, validate it against | |
1795 | * the sleep cmd timeout. A failure means we need to prevent the host | |
1796 | * from doing hw busy detection, which is done by converting to a R1 | |
1797 | * response instead of a R1B. | |
1798 | */ | |
1799 | if (host->max_busy_timeout && (timeout_ms > host->max_busy_timeout)) { | |
1800 | cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; | |
1801 | } else { | |
1802 | cmd.flags = MMC_RSP_R1B | MMC_CMD_AC; | |
1803 | cmd.busy_timeout = timeout_ms; | |
1804 | } | |
1805 | ||
07a68216 UH |
1806 | err = mmc_wait_for_cmd(host, &cmd, 0); |
1807 | if (err) | |
436f8daa | 1808 | goto out_release; |
07a68216 UH |
1809 | |
1810 | /* | |
1811 | * If the host does not wait while the card signals busy, then we will | |
1812 | * will have to wait the sleep/awake timeout. Note, we cannot use the | |
1813 | * SEND_STATUS command to poll the status because that command (and most | |
1814 | * others) is invalid while the card sleeps. | |
1815 | */ | |
cb962e04 UH |
1816 | if (!cmd.busy_timeout || !(host->caps & MMC_CAP_WAIT_WHILE_BUSY)) |
1817 | mmc_delay(timeout_ms); | |
07a68216 | 1818 | |
436f8daa AH |
1819 | out_release: |
1820 | mmc_retune_release(host); | |
07a68216 UH |
1821 | return err; |
1822 | } | |
1823 | ||
e6c08586 UH |
1824 | static int mmc_can_poweroff_notify(const struct mmc_card *card) |
1825 | { | |
1826 | return card && | |
1827 | mmc_card_mmc(card) && | |
1828 | (card->ext_csd.power_off_notification == EXT_CSD_POWER_ON); | |
1829 | } | |
1830 | ||
1831 | static int mmc_poweroff_notify(struct mmc_card *card, unsigned int notify_type) | |
1832 | { | |
1833 | unsigned int timeout = card->ext_csd.generic_cmd6_time; | |
1834 | int err; | |
1835 | ||
1836 | /* Use EXT_CSD_POWER_OFF_SHORT as default notification type. */ | |
1837 | if (notify_type == EXT_CSD_POWER_OFF_LONG) | |
1838 | timeout = card->ext_csd.power_off_longtime; | |
1839 | ||
878e200b UH |
1840 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
1841 | EXT_CSD_POWER_OFF_NOTIFICATION, | |
4509f847 | 1842 | notify_type, timeout, true, false, false); |
e6c08586 UH |
1843 | if (err) |
1844 | pr_err("%s: Power Off Notification timed out, %u\n", | |
1845 | mmc_hostname(card->host), timeout); | |
1846 | ||
1847 | /* Disable the power off notification after the switch operation. */ | |
1848 | card->ext_csd.power_off_notification = EXT_CSD_NO_POWER_NOTIFICATION; | |
1849 | ||
1850 | return err; | |
1851 | } | |
1852 | ||
6abaa0c9 PO |
1853 | /* |
1854 | * Host is being removed. Free up the current card. | |
1855 | */ | |
1856 | static void mmc_remove(struct mmc_host *host) | |
1857 | { | |
1858 | BUG_ON(!host); | |
1859 | BUG_ON(!host->card); | |
1860 | ||
1861 | mmc_remove_card(host->card); | |
1862 | host->card = NULL; | |
1863 | } | |
1864 | ||
d3049504 AH |
1865 | /* |
1866 | * Card detection - card is alive. | |
1867 | */ | |
1868 | static int mmc_alive(struct mmc_host *host) | |
1869 | { | |
1870 | return mmc_send_status(host->card, NULL); | |
1871 | } | |
1872 | ||
6abaa0c9 PO |
1873 | /* |
1874 | * Card detection callback from host. | |
1875 | */ | |
1876 | static void mmc_detect(struct mmc_host *host) | |
1877 | { | |
1878 | int err; | |
1879 | ||
1880 | BUG_ON(!host); | |
1881 | BUG_ON(!host->card); | |
1882 | ||
e94cfef6 | 1883 | mmc_get_card(host->card); |
6abaa0c9 PO |
1884 | |
1885 | /* | |
1886 | * Just check if our card has been removed. | |
1887 | */ | |
d3049504 | 1888 | err = _mmc_detect_card_removed(host); |
6abaa0c9 | 1889 | |
e94cfef6 | 1890 | mmc_put_card(host->card); |
6abaa0c9 | 1891 | |
17b0429d | 1892 | if (err) { |
4101c16a | 1893 | mmc_remove(host); |
6abaa0c9 PO |
1894 | |
1895 | mmc_claim_host(host); | |
1896 | mmc_detach_bus(host); | |
7f7e4129 | 1897 | mmc_power_off(host); |
6abaa0c9 PO |
1898 | mmc_release_host(host); |
1899 | } | |
1900 | } | |
1901 | ||
03d071fc | 1902 | static int _mmc_suspend(struct mmc_host *host, bool is_suspend) |
6abaa0c9 | 1903 | { |
c3805467 | 1904 | int err = 0; |
03d071fc UH |
1905 | unsigned int notify_type = is_suspend ? EXT_CSD_POWER_OFF_SHORT : |
1906 | EXT_CSD_POWER_OFF_LONG; | |
c3805467 | 1907 | |
6abaa0c9 PO |
1908 | BUG_ON(!host); |
1909 | BUG_ON(!host->card); | |
7ea239d9 | 1910 | |
6abaa0c9 | 1911 | mmc_claim_host(host); |
881d926d | 1912 | |
9ec775f7 UH |
1913 | if (mmc_card_suspended(host->card)) |
1914 | goto out; | |
1915 | ||
39b9431b UH |
1916 | if (mmc_card_doing_bkops(host->card)) { |
1917 | err = mmc_stop_bkops(host->card); | |
1918 | if (err) | |
1919 | goto out; | |
1920 | } | |
1921 | ||
10e5d965 | 1922 | err = mmc_flush_cache(host->card); |
881d926d ME |
1923 | if (err) |
1924 | goto out; | |
1925 | ||
43235679 | 1926 | if (mmc_can_poweroff_notify(host->card) && |
53275c21 | 1927 | ((host->caps2 & MMC_CAP2_FULL_PWR_CYCLE) || !is_suspend)) |
03d071fc | 1928 | err = mmc_poweroff_notify(host->card, notify_type); |
07a68216 UH |
1929 | else if (mmc_can_sleep(host->card)) |
1930 | err = mmc_sleep(host); | |
e6c08586 | 1931 | else if (!mmc_host_is_spi(host)) |
85e727ed | 1932 | err = mmc_deselect_cards(host); |
95cdfb72 | 1933 | |
9ec775f7 | 1934 | if (!err) { |
74590263 | 1935 | mmc_power_off(host); |
9ec775f7 UH |
1936 | mmc_card_set_suspended(host->card); |
1937 | } | |
881d926d ME |
1938 | out: |
1939 | mmc_release_host(host); | |
c3805467 | 1940 | return err; |
6abaa0c9 | 1941 | } |
7ea239d9 | 1942 | |
03d071fc | 1943 | /* |
0cb403a2 | 1944 | * Suspend callback |
03d071fc UH |
1945 | */ |
1946 | static int mmc_suspend(struct mmc_host *host) | |
1947 | { | |
0cb403a2 UH |
1948 | int err; |
1949 | ||
1950 | err = _mmc_suspend(host, true); | |
1951 | if (!err) { | |
1952 | pm_runtime_disable(&host->card->dev); | |
1953 | pm_runtime_set_suspended(&host->card->dev); | |
1954 | } | |
1955 | ||
1956 | return err; | |
03d071fc UH |
1957 | } |
1958 | ||
6abaa0c9 | 1959 | /* |
6abaa0c9 PO |
1960 | * This function tries to determine if the same card is still present |
1961 | * and, if so, restore all state to it. | |
1962 | */ | |
0cb403a2 | 1963 | static int _mmc_resume(struct mmc_host *host) |
6abaa0c9 | 1964 | { |
9ec775f7 | 1965 | int err = 0; |
6abaa0c9 PO |
1966 | |
1967 | BUG_ON(!host); | |
1968 | BUG_ON(!host->card); | |
1969 | ||
1970 | mmc_claim_host(host); | |
9ec775f7 UH |
1971 | |
1972 | if (!mmc_card_suspended(host->card)) | |
1973 | goto out; | |
1974 | ||
69041150 | 1975 | mmc_power_up(host, host->card->ocr); |
69041150 | 1976 | err = mmc_init_card(host, host->card->ocr, host->card); |
9ec775f7 | 1977 | mmc_card_clr_suspended(host->card); |
2986d0bf | 1978 | |
9ec775f7 UH |
1979 | out: |
1980 | mmc_release_host(host); | |
95cdfb72 | 1981 | return err; |
6abaa0c9 PO |
1982 | } |
1983 | ||
9ec775f7 UH |
1984 | /* |
1985 | * Shutdown callback | |
1986 | */ | |
1987 | static int mmc_shutdown(struct mmc_host *host) | |
1988 | { | |
1989 | int err = 0; | |
1990 | ||
1991 | /* | |
1992 | * In a specific case for poweroff notify, we need to resume the card | |
1993 | * before we can shutdown it properly. | |
1994 | */ | |
1995 | if (mmc_can_poweroff_notify(host->card) && | |
1996 | !(host->caps2 & MMC_CAP2_FULL_PWR_CYCLE)) | |
0cb403a2 | 1997 | err = _mmc_resume(host); |
9ec775f7 UH |
1998 | |
1999 | if (!err) | |
2000 | err = _mmc_suspend(host, false); | |
2001 | ||
2002 | return err; | |
2003 | } | |
c4d770d7 | 2004 | |
0cb403a2 UH |
2005 | /* |
2006 | * Callback for resume. | |
2007 | */ | |
2008 | static int mmc_resume(struct mmc_host *host) | |
2009 | { | |
0cb403a2 | 2010 | pm_runtime_enable(&host->card->dev); |
c29536e8 | 2011 | return 0; |
0cb403a2 UH |
2012 | } |
2013 | ||
c4d770d7 UH |
2014 | /* |
2015 | * Callback for runtime_suspend. | |
2016 | */ | |
2017 | static int mmc_runtime_suspend(struct mmc_host *host) | |
2018 | { | |
2019 | int err; | |
2020 | ||
2021 | if (!(host->caps & MMC_CAP_AGGRESSIVE_PM)) | |
2022 | return 0; | |
2023 | ||
0cb403a2 | 2024 | err = _mmc_suspend(host, true); |
0cc81a8c | 2025 | if (err) |
f42cf8d6 | 2026 | pr_err("%s: error %d doing aggressive suspend\n", |
c4d770d7 | 2027 | mmc_hostname(host), err); |
c4d770d7 | 2028 | |
c4d770d7 UH |
2029 | return err; |
2030 | } | |
2031 | ||
2032 | /* | |
2033 | * Callback for runtime_resume. | |
2034 | */ | |
2035 | static int mmc_runtime_resume(struct mmc_host *host) | |
2036 | { | |
2037 | int err; | |
2038 | ||
0cb403a2 | 2039 | err = _mmc_resume(host); |
520322d9 | 2040 | if (err && err != -ENOMEDIUM) |
c29536e8 | 2041 | pr_err("%s: error %d doing runtime resume\n", |
c4d770d7 UH |
2042 | mmc_hostname(host), err); |
2043 | ||
c4d770d7 UH |
2044 | return 0; |
2045 | } | |
2046 | ||
f855a371 JR |
2047 | int mmc_can_reset(struct mmc_card *card) |
2048 | { | |
2049 | u8 rst_n_function; | |
2050 | ||
2051 | rst_n_function = card->ext_csd.rst_n_function; | |
2052 | if ((rst_n_function & EXT_CSD_RST_N_EN_MASK) != EXT_CSD_RST_N_ENABLED) | |
2053 | return 0; | |
2054 | return 1; | |
2055 | } | |
2056 | EXPORT_SYMBOL(mmc_can_reset); | |
2057 | ||
2058 | static int mmc_reset(struct mmc_host *host) | |
2059 | { | |
2060 | struct mmc_card *card = host->card; | |
f855a371 | 2061 | |
437db4c6 AH |
2062 | /* |
2063 | * In the case of recovery, we can't expect flushing the cache to work | |
2064 | * always, but we have a go and ignore errors. | |
2065 | */ | |
2066 | mmc_flush_cache(host->card); | |
2067 | ||
4e6c7178 GG |
2068 | if ((host->caps & MMC_CAP_HW_RESET) && host->ops->hw_reset && |
2069 | mmc_can_reset(card)) { | |
2070 | /* If the card accept RST_n signal, send it. */ | |
2071 | mmc_set_clock(host, host->f_init); | |
2072 | host->ops->hw_reset(host); | |
2073 | /* Set initial state and call mmc_set_ios */ | |
2074 | mmc_set_initial_state(host); | |
2075 | } else { | |
2076 | /* Do a brute force power cycle */ | |
2077 | mmc_power_cycle(host, card->ocr); | |
2078 | } | |
364549dd | 2079 | return mmc_init_card(host, card->ocr, card); |
f855a371 JR |
2080 | } |
2081 | ||
6abaa0c9 PO |
2082 | static const struct mmc_bus_ops mmc_ops = { |
2083 | .remove = mmc_remove, | |
2084 | .detect = mmc_detect, | |
2085 | .suspend = mmc_suspend, | |
2086 | .resume = mmc_resume, | |
c4d770d7 UH |
2087 | .runtime_suspend = mmc_runtime_suspend, |
2088 | .runtime_resume = mmc_runtime_resume, | |
d3049504 | 2089 | .alive = mmc_alive, |
486fdbbc | 2090 | .shutdown = mmc_shutdown, |
f855a371 | 2091 | .reset = mmc_reset, |
6abaa0c9 PO |
2092 | }; |
2093 | ||
2094 | /* | |
2095 | * Starting point for MMC card init. | |
2096 | */ | |
807e8e40 | 2097 | int mmc_attach_mmc(struct mmc_host *host) |
6abaa0c9 PO |
2098 | { |
2099 | int err; | |
69041150 | 2100 | u32 ocr, rocr; |
6abaa0c9 PO |
2101 | |
2102 | BUG_ON(!host); | |
d84075c8 | 2103 | WARN_ON(!host->claimed); |
6abaa0c9 | 2104 | |
44669034 SNX |
2105 | /* Set correct bus mode for MMC before attempting attach */ |
2106 | if (!mmc_host_is_spi(host)) | |
2107 | mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); | |
2108 | ||
807e8e40 AR |
2109 | err = mmc_send_op_cond(host, 0, &ocr); |
2110 | if (err) | |
2111 | return err; | |
2112 | ||
2501c917 | 2113 | mmc_attach_bus(host, &mmc_ops); |
8f230f45 TI |
2114 | if (host->ocr_avail_mmc) |
2115 | host->ocr_avail = host->ocr_avail_mmc; | |
6abaa0c9 | 2116 | |
af517150 DB |
2117 | /* |
2118 | * We need to get OCR a different way for SPI. | |
2119 | */ | |
2120 | if (mmc_host_is_spi(host)) { | |
2121 | err = mmc_spi_read_ocr(host, 1, &ocr); | |
2122 | if (err) | |
2123 | goto err; | |
2124 | } | |
2125 | ||
69041150 | 2126 | rocr = mmc_select_voltage(host, ocr); |
6abaa0c9 PO |
2127 | |
2128 | /* | |
2129 | * Can we support the voltage of the card? | |
2130 | */ | |
69041150 | 2131 | if (!rocr) { |
109b5bed | 2132 | err = -EINVAL; |
6abaa0c9 | 2133 | goto err; |
109b5bed | 2134 | } |
6abaa0c9 PO |
2135 | |
2136 | /* | |
2137 | * Detect and init the card. | |
2138 | */ | |
69041150 | 2139 | err = mmc_init_card(host, rocr, NULL); |
17b0429d | 2140 | if (err) |
6abaa0c9 PO |
2141 | goto err; |
2142 | ||
2143 | mmc_release_host(host); | |
4101c16a | 2144 | err = mmc_add_card(host->card); |
7ea239d9 | 2145 | if (err) |
2986d0bf | 2146 | goto remove_card; |
7ea239d9 | 2147 | |
2860d060 | 2148 | mmc_claim_host(host); |
7ea239d9 PO |
2149 | return 0; |
2150 | ||
2986d0bf | 2151 | remove_card: |
6abaa0c9 | 2152 | mmc_remove_card(host->card); |
2986d0bf | 2153 | mmc_claim_host(host); |
807e8e40 | 2154 | host->card = NULL; |
7ea239d9 PO |
2155 | err: |
2156 | mmc_detach_bus(host); | |
7ea239d9 | 2157 | |
a3c76eb9 | 2158 | pr_err("%s: error %d whilst initialising MMC card\n", |
109b5bed PO |
2159 | mmc_hostname(host), err); |
2160 | ||
adf66a0d | 2161 | return err; |
7ea239d9 | 2162 | } |