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 | 28 | |
fe1b5700 UH |
29 | #define DEFAULT_CMD6_TIMEOUT_MS 500 |
30 | ||
7ea239d9 PO |
31 | static const unsigned int tran_exp[] = { |
32 | 10000, 100000, 1000000, 10000000, | |
33 | 0, 0, 0, 0 | |
34 | }; | |
35 | ||
36 | static const unsigned char tran_mant[] = { | |
37 | 0, 10, 12, 13, 15, 20, 25, 30, | |
38 | 35, 40, 45, 50, 55, 60, 70, 80, | |
39 | }; | |
40 | ||
41 | static const unsigned int tacc_exp[] = { | |
42 | 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, | |
43 | }; | |
44 | ||
45 | static const unsigned int tacc_mant[] = { | |
46 | 0, 10, 12, 13, 15, 20, 25, 30, | |
47 | 35, 40, 45, 50, 55, 60, 70, 80, | |
48 | }; | |
49 | ||
5320226a P |
50 | static const struct mmc_fixup mmc_ext_csd_fixups[] = { |
51 | /* | |
52 | * Certain Hynix eMMC 4.41 cards might get broken when HPI feature | |
53 | * is used so disable the HPI feature for such buggy cards. | |
54 | */ | |
55 | MMC_FIXUP_EXT_CSD_REV(CID_NAME_ANY, CID_MANFID_HYNIX, | |
56 | 0x014a, add_quirk, MMC_QUIRK_BROKEN_HPI, 5), | |
57 | ||
58 | END_FIXUP | |
59 | }; | |
60 | ||
7ea239d9 PO |
61 | #define UNSTUFF_BITS(resp,start,size) \ |
62 | ({ \ | |
63 | const int __size = size; \ | |
64 | const u32 __mask = (__size < 32 ? 1 << __size : 0) - 1; \ | |
65 | const int __off = 3 - ((start) / 32); \ | |
66 | const int __shft = (start) & 31; \ | |
67 | u32 __res; \ | |
68 | \ | |
69 | __res = resp[__off] >> __shft; \ | |
70 | if (__size + __shft > 32) \ | |
71 | __res |= resp[__off-1] << ((32 - __shft) % 32); \ | |
72 | __res & __mask; \ | |
73 | }) | |
74 | ||
75 | /* | |
76 | * Given the decoded CSD structure, decode the raw CID to our CID structure. | |
77 | */ | |
bd766312 | 78 | static int mmc_decode_cid(struct mmc_card *card) |
7ea239d9 PO |
79 | { |
80 | u32 *resp = card->raw_cid; | |
81 | ||
82 | /* | |
83 | * The selection of the format here is based upon published | |
84 | * specs from sandisk and from what people have reported. | |
85 | */ | |
86 | switch (card->csd.mmca_vsn) { | |
87 | case 0: /* MMC v1.0 - v1.2 */ | |
88 | case 1: /* MMC v1.4 */ | |
89 | card->cid.manfid = UNSTUFF_BITS(resp, 104, 24); | |
90 | card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); | |
91 | card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); | |
92 | card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); | |
93 | card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); | |
94 | card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); | |
95 | card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); | |
96 | card->cid.prod_name[6] = UNSTUFF_BITS(resp, 48, 8); | |
97 | card->cid.hwrev = UNSTUFF_BITS(resp, 44, 4); | |
98 | card->cid.fwrev = UNSTUFF_BITS(resp, 40, 4); | |
99 | card->cid.serial = UNSTUFF_BITS(resp, 16, 24); | |
100 | card->cid.month = UNSTUFF_BITS(resp, 12, 4); | |
101 | card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; | |
102 | break; | |
103 | ||
104 | case 2: /* MMC v2.0 - v2.2 */ | |
105 | case 3: /* MMC v3.1 - v3.3 */ | |
106 | case 4: /* MMC v4 */ | |
107 | card->cid.manfid = UNSTUFF_BITS(resp, 120, 8); | |
108 | card->cid.oemid = UNSTUFF_BITS(resp, 104, 16); | |
109 | card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); | |
110 | card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); | |
111 | card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); | |
112 | card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); | |
113 | card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); | |
114 | card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); | |
51e7e8b6 | 115 | card->cid.prv = UNSTUFF_BITS(resp, 48, 8); |
7ea239d9 PO |
116 | card->cid.serial = UNSTUFF_BITS(resp, 16, 32); |
117 | card->cid.month = UNSTUFF_BITS(resp, 12, 4); | |
118 | card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; | |
119 | break; | |
120 | ||
121 | default: | |
a3c76eb9 | 122 | pr_err("%s: card has unknown MMCA version %d\n", |
7ea239d9 | 123 | mmc_hostname(card->host), card->csd.mmca_vsn); |
bd766312 | 124 | return -EINVAL; |
7ea239d9 | 125 | } |
bd766312 PO |
126 | |
127 | return 0; | |
7ea239d9 PO |
128 | } |
129 | ||
dfe86cba AH |
130 | static void mmc_set_erase_size(struct mmc_card *card) |
131 | { | |
132 | if (card->ext_csd.erase_group_def & 1) | |
133 | card->erase_size = card->ext_csd.hc_erase_size; | |
134 | else | |
135 | card->erase_size = card->csd.erase_size; | |
136 | ||
137 | mmc_init_erase(card); | |
138 | } | |
139 | ||
7ea239d9 PO |
140 | /* |
141 | * Given a 128-bit response, decode to our card CSD structure. | |
142 | */ | |
bd766312 | 143 | static int mmc_decode_csd(struct mmc_card *card) |
7ea239d9 PO |
144 | { |
145 | struct mmc_csd *csd = &card->csd; | |
dfe86cba | 146 | unsigned int e, m, a, b; |
7ea239d9 PO |
147 | u32 *resp = card->raw_csd; |
148 | ||
149 | /* | |
150 | * We only understand CSD structure v1.1 and v1.2. | |
151 | * v1.2 has extra information in bits 15, 11 and 10. | |
6da24b78 | 152 | * We also support eMMC v4.4 & v4.41. |
7ea239d9 | 153 | */ |
6da24b78 KP |
154 | csd->structure = UNSTUFF_BITS(resp, 126, 2); |
155 | if (csd->structure == 0) { | |
a3c76eb9 | 156 | pr_err("%s: unrecognised CSD structure version %d\n", |
6da24b78 | 157 | mmc_hostname(card->host), csd->structure); |
bd766312 | 158 | return -EINVAL; |
7ea239d9 PO |
159 | } |
160 | ||
161 | csd->mmca_vsn = UNSTUFF_BITS(resp, 122, 4); | |
162 | m = UNSTUFF_BITS(resp, 115, 4); | |
163 | e = UNSTUFF_BITS(resp, 112, 3); | |
164 | csd->tacc_ns = (tacc_exp[e] * tacc_mant[m] + 9) / 10; | |
165 | csd->tacc_clks = UNSTUFF_BITS(resp, 104, 8) * 100; | |
166 | ||
167 | m = UNSTUFF_BITS(resp, 99, 4); | |
168 | e = UNSTUFF_BITS(resp, 96, 3); | |
169 | csd->max_dtr = tran_exp[e] * tran_mant[m]; | |
170 | csd->cmdclass = UNSTUFF_BITS(resp, 84, 12); | |
171 | ||
172 | e = UNSTUFF_BITS(resp, 47, 3); | |
173 | m = UNSTUFF_BITS(resp, 62, 12); | |
174 | csd->capacity = (1 + m) << (e + 2); | |
175 | ||
176 | csd->read_blkbits = UNSTUFF_BITS(resp, 80, 4); | |
177 | csd->read_partial = UNSTUFF_BITS(resp, 79, 1); | |
178 | csd->write_misalign = UNSTUFF_BITS(resp, 78, 1); | |
179 | csd->read_misalign = UNSTUFF_BITS(resp, 77, 1); | |
3d705d14 | 180 | csd->dsr_imp = UNSTUFF_BITS(resp, 76, 1); |
7ea239d9 PO |
181 | csd->r2w_factor = UNSTUFF_BITS(resp, 26, 3); |
182 | csd->write_blkbits = UNSTUFF_BITS(resp, 22, 4); | |
183 | csd->write_partial = UNSTUFF_BITS(resp, 21, 1); | |
bd766312 | 184 | |
dfe86cba AH |
185 | if (csd->write_blkbits >= 9) { |
186 | a = UNSTUFF_BITS(resp, 42, 5); | |
187 | b = UNSTUFF_BITS(resp, 37, 5); | |
188 | csd->erase_size = (a + 1) * (b + 1); | |
189 | csd->erase_size <<= csd->write_blkbits - 9; | |
190 | } | |
191 | ||
bd766312 | 192 | return 0; |
7ea239d9 PO |
193 | } |
194 | ||
96cf5f02 SJ |
195 | static void mmc_select_card_type(struct mmc_card *card) |
196 | { | |
197 | struct mmc_host *host = card->host; | |
0a5b6438 | 198 | u8 card_type = card->ext_csd.raw_card_type; |
5f1a4dd0 | 199 | u32 caps = host->caps, caps2 = host->caps2; |
577fb131 | 200 | unsigned int hs_max_dtr = 0, hs200_max_dtr = 0; |
2415c0ef | 201 | unsigned int avail_type = 0; |
96cf5f02 | 202 | |
2415c0ef SJ |
203 | if (caps & MMC_CAP_MMC_HIGHSPEED && |
204 | card_type & EXT_CSD_CARD_TYPE_HS_26) { | |
96cf5f02 | 205 | hs_max_dtr = MMC_HIGH_26_MAX_DTR; |
2415c0ef SJ |
206 | avail_type |= EXT_CSD_CARD_TYPE_HS_26; |
207 | } | |
96cf5f02 SJ |
208 | |
209 | if (caps & MMC_CAP_MMC_HIGHSPEED && | |
2415c0ef | 210 | card_type & EXT_CSD_CARD_TYPE_HS_52) { |
96cf5f02 | 211 | hs_max_dtr = MMC_HIGH_52_MAX_DTR; |
2415c0ef SJ |
212 | avail_type |= EXT_CSD_CARD_TYPE_HS_52; |
213 | } | |
96cf5f02 | 214 | |
2415c0ef SJ |
215 | if (caps & MMC_CAP_1_8V_DDR && |
216 | card_type & EXT_CSD_CARD_TYPE_DDR_1_8V) { | |
96cf5f02 | 217 | hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; |
2415c0ef SJ |
218 | avail_type |= EXT_CSD_CARD_TYPE_DDR_1_8V; |
219 | } | |
220 | ||
221 | if (caps & MMC_CAP_1_2V_DDR && | |
222 | card_type & EXT_CSD_CARD_TYPE_DDR_1_2V) { | |
223 | hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; | |
224 | avail_type |= EXT_CSD_CARD_TYPE_DDR_1_2V; | |
225 | } | |
96cf5f02 | 226 | |
2415c0ef SJ |
227 | if (caps2 & MMC_CAP2_HS200_1_8V_SDR && |
228 | card_type & EXT_CSD_CARD_TYPE_HS200_1_8V) { | |
577fb131 | 229 | hs200_max_dtr = MMC_HS200_MAX_DTR; |
2415c0ef SJ |
230 | avail_type |= EXT_CSD_CARD_TYPE_HS200_1_8V; |
231 | } | |
232 | ||
233 | if (caps2 & MMC_CAP2_HS200_1_2V_SDR && | |
234 | card_type & EXT_CSD_CARD_TYPE_HS200_1_2V) { | |
577fb131 | 235 | hs200_max_dtr = MMC_HS200_MAX_DTR; |
2415c0ef SJ |
236 | avail_type |= EXT_CSD_CARD_TYPE_HS200_1_2V; |
237 | } | |
96cf5f02 | 238 | |
0a5b6438 SJ |
239 | if (caps2 & MMC_CAP2_HS400_1_8V && |
240 | card_type & EXT_CSD_CARD_TYPE_HS400_1_8V) { | |
241 | hs200_max_dtr = MMC_HS200_MAX_DTR; | |
242 | avail_type |= EXT_CSD_CARD_TYPE_HS400_1_8V; | |
243 | } | |
244 | ||
245 | if (caps2 & MMC_CAP2_HS400_1_2V && | |
246 | card_type & EXT_CSD_CARD_TYPE_HS400_1_2V) { | |
247 | hs200_max_dtr = MMC_HS200_MAX_DTR; | |
248 | avail_type |= EXT_CSD_CARD_TYPE_HS400_1_2V; | |
249 | } | |
250 | ||
81ac2af6 SL |
251 | if ((caps2 & MMC_CAP2_HS400_ES) && |
252 | card->ext_csd.strobe_support && | |
253 | (avail_type & EXT_CSD_CARD_TYPE_HS400)) | |
254 | avail_type |= EXT_CSD_CARD_TYPE_HS400ES; | |
255 | ||
96cf5f02 | 256 | card->ext_csd.hs_max_dtr = hs_max_dtr; |
577fb131 | 257 | card->ext_csd.hs200_max_dtr = hs200_max_dtr; |
2415c0ef | 258 | card->mmc_avail_type = avail_type; |
96cf5f02 SJ |
259 | } |
260 | ||
b4493eea GS |
261 | static void mmc_manage_enhanced_area(struct mmc_card *card, u8 *ext_csd) |
262 | { | |
994324bb GS |
263 | u8 hc_erase_grp_sz, hc_wp_grp_sz; |
264 | ||
265 | /* | |
266 | * Disable these attributes by default | |
267 | */ | |
268 | card->ext_csd.enhanced_area_offset = -EINVAL; | |
269 | card->ext_csd.enhanced_area_size = -EINVAL; | |
b4493eea GS |
270 | |
271 | /* | |
272 | * Enhanced area feature support -- check whether the eMMC | |
273 | * card has the Enhanced area enabled. If so, export enhanced | |
274 | * area offset and size to user by adding sysfs interface. | |
275 | */ | |
276 | if ((ext_csd[EXT_CSD_PARTITION_SUPPORT] & 0x2) && | |
277 | (ext_csd[EXT_CSD_PARTITION_ATTRIBUTE] & 0x1)) { | |
994324bb GS |
278 | if (card->ext_csd.partition_setting_completed) { |
279 | hc_erase_grp_sz = | |
280 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; | |
281 | hc_wp_grp_sz = | |
282 | ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; | |
b4493eea | 283 | |
994324bb GS |
284 | /* |
285 | * calculate the enhanced data area offset, in bytes | |
286 | */ | |
287 | card->ext_csd.enhanced_area_offset = | |
ded8a5f9 KM |
288 | (((unsigned long long)ext_csd[139]) << 24) + |
289 | (((unsigned long long)ext_csd[138]) << 16) + | |
290 | (((unsigned long long)ext_csd[137]) << 8) + | |
291 | (((unsigned long long)ext_csd[136])); | |
994324bb GS |
292 | if (mmc_card_blockaddr(card)) |
293 | card->ext_csd.enhanced_area_offset <<= 9; | |
294 | /* | |
295 | * calculate the enhanced data area size, in kilobytes | |
296 | */ | |
297 | card->ext_csd.enhanced_area_size = | |
298 | (ext_csd[142] << 16) + (ext_csd[141] << 8) + | |
299 | ext_csd[140]; | |
300 | card->ext_csd.enhanced_area_size *= | |
301 | (size_t)(hc_erase_grp_sz * hc_wp_grp_sz); | |
302 | card->ext_csd.enhanced_area_size <<= 9; | |
303 | } else { | |
304 | pr_warn("%s: defines enhanced area without partition setting complete\n", | |
305 | mmc_hostname(card->host)); | |
306 | } | |
b4493eea GS |
307 | } |
308 | } | |
309 | ||
310 | static void mmc_manage_gp_partitions(struct mmc_card *card, u8 *ext_csd) | |
311 | { | |
b4493eea | 312 | int idx; |
994324bb GS |
313 | u8 hc_erase_grp_sz, hc_wp_grp_sz; |
314 | unsigned int part_size; | |
b4493eea GS |
315 | |
316 | /* | |
317 | * General purpose partition feature support -- | |
318 | * If ext_csd has the size of general purpose partitions, | |
319 | * set size, part_cfg, partition name in mmc_part. | |
320 | */ | |
321 | if (ext_csd[EXT_CSD_PARTITION_SUPPORT] & | |
322 | EXT_CSD_PART_SUPPORT_PART_EN) { | |
994324bb GS |
323 | hc_erase_grp_sz = |
324 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; | |
325 | hc_wp_grp_sz = | |
326 | ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; | |
b4493eea GS |
327 | |
328 | for (idx = 0; idx < MMC_NUM_GP_PARTITION; idx++) { | |
329 | if (!ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3] && | |
330 | !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] && | |
331 | !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2]) | |
332 | continue; | |
994324bb GS |
333 | if (card->ext_csd.partition_setting_completed == 0) { |
334 | pr_warn("%s: has partition size defined without partition complete\n", | |
335 | mmc_hostname(card->host)); | |
336 | break; | |
337 | } | |
b4493eea GS |
338 | part_size = |
339 | (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2] | |
340 | << 16) + | |
341 | (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] | |
342 | << 8) + | |
343 | ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3]; | |
344 | part_size *= (size_t)(hc_erase_grp_sz * | |
345 | hc_wp_grp_sz); | |
346 | mmc_part_add(card, part_size << 19, | |
347 | EXT_CSD_PART_CONFIG_ACC_GP0 + idx, | |
348 | "gp%d", idx, false, | |
349 | MMC_BLK_DATA_AREA_GP); | |
350 | } | |
351 | } | |
352 | } | |
353 | ||
1c447116 AH |
354 | /* Minimum partition switch timeout in milliseconds */ |
355 | #define MMC_MIN_PART_SWITCH_TIME 300 | |
356 | ||
08ee80cc PR |
357 | /* |
358 | * Decode extended CSD. | |
359 | */ | |
076ec38a | 360 | static int mmc_decode_ext_csd(struct mmc_card *card, u8 *ext_csd) |
08ee80cc | 361 | { |
e0c368d5 NJ |
362 | int err = 0, idx; |
363 | unsigned int part_size; | |
81f8a7be HG |
364 | struct device_node *np; |
365 | bool broken_hpi = false; | |
08ee80cc | 366 | |
6da24b78 | 367 | /* Version is coded in the CSD_STRUCTURE byte in the EXT_CSD register */ |
f39b2dd9 | 368 | card->ext_csd.raw_ext_csd_structure = ext_csd[EXT_CSD_STRUCTURE]; |
6da24b78 | 369 | if (card->csd.structure == 3) { |
f39b2dd9 | 370 | if (card->ext_csd.raw_ext_csd_structure > 2) { |
a3c76eb9 | 371 | pr_err("%s: unrecognised EXT_CSD structure " |
6da24b78 | 372 | "version %d\n", mmc_hostname(card->host), |
f39b2dd9 | 373 | card->ext_csd.raw_ext_csd_structure); |
6da24b78 KP |
374 | err = -EINVAL; |
375 | goto out; | |
376 | } | |
377 | } | |
378 | ||
81f8a7be HG |
379 | np = mmc_of_find_child_device(card->host, 0); |
380 | if (np && of_device_is_compatible(np, "mmc-card")) | |
381 | broken_hpi = of_property_read_bool(np, "broken-hpi"); | |
382 | of_node_put(np); | |
383 | ||
03a59437 RI |
384 | /* |
385 | * The EXT_CSD format is meant to be forward compatible. As long | |
386 | * as CSD_STRUCTURE does not change, all values for EXT_CSD_REV | |
387 | * are authorized, see JEDEC JESD84-B50 section B.8. | |
388 | */ | |
b1ebe384 | 389 | card->ext_csd.rev = ext_csd[EXT_CSD_REV]; |
d7604d76 | 390 | |
5320226a P |
391 | /* fixup device after ext_csd revision field is updated */ |
392 | mmc_fixup_device(card, mmc_ext_csd_fixups); | |
393 | ||
f39b2dd9 PR |
394 | card->ext_csd.raw_sectors[0] = ext_csd[EXT_CSD_SEC_CNT + 0]; |
395 | card->ext_csd.raw_sectors[1] = ext_csd[EXT_CSD_SEC_CNT + 1]; | |
396 | card->ext_csd.raw_sectors[2] = ext_csd[EXT_CSD_SEC_CNT + 2]; | |
397 | card->ext_csd.raw_sectors[3] = ext_csd[EXT_CSD_SEC_CNT + 3]; | |
b1ebe384 | 398 | if (card->ext_csd.rev >= 2) { |
d7604d76 PO |
399 | card->ext_csd.sectors = |
400 | ext_csd[EXT_CSD_SEC_CNT + 0] << 0 | | |
401 | ext_csd[EXT_CSD_SEC_CNT + 1] << 8 | | |
402 | ext_csd[EXT_CSD_SEC_CNT + 2] << 16 | | |
403 | ext_csd[EXT_CSD_SEC_CNT + 3] << 24; | |
fc8a0985 HP |
404 | |
405 | /* Cards with density > 2GiB are sector addressed */ | |
406 | if (card->ext_csd.sectors > (2u * 1024 * 1024 * 1024) / 512) | |
d7604d76 PO |
407 | mmc_card_set_blockaddr(card); |
408 | } | |
96cf5f02 | 409 | |
81ac2af6 | 410 | card->ext_csd.strobe_support = ext_csd[EXT_CSD_STROBE_SUPPORT]; |
f39b2dd9 | 411 | card->ext_csd.raw_card_type = ext_csd[EXT_CSD_CARD_TYPE]; |
96cf5f02 | 412 | mmc_select_card_type(card); |
7ea239d9 | 413 | |
f39b2dd9 PR |
414 | card->ext_csd.raw_s_a_timeout = ext_csd[EXT_CSD_S_A_TIMEOUT]; |
415 | card->ext_csd.raw_erase_timeout_mult = | |
416 | ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; | |
417 | card->ext_csd.raw_hc_erase_grp_size = | |
418 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; | |
b1ebe384 JL |
419 | if (card->ext_csd.rev >= 3) { |
420 | u8 sa_shift = ext_csd[EXT_CSD_S_A_TIMEOUT]; | |
371a689f AW |
421 | card->ext_csd.part_config = ext_csd[EXT_CSD_PART_CONFIG]; |
422 | ||
423 | /* EXT_CSD value is in units of 10ms, but we store in ms */ | |
424 | card->ext_csd.part_time = 10 * ext_csd[EXT_CSD_PART_SWITCH_TIME]; | |
1c447116 AH |
425 | /* Some eMMC set the value too low so set a minimum */ |
426 | if (card->ext_csd.part_time && | |
427 | card->ext_csd.part_time < MMC_MIN_PART_SWITCH_TIME) | |
428 | card->ext_csd.part_time = MMC_MIN_PART_SWITCH_TIME; | |
b1ebe384 JL |
429 | |
430 | /* Sleep / awake timeout in 100ns units */ | |
431 | if (sa_shift > 0 && sa_shift <= 0x17) | |
432 | card->ext_csd.sa_timeout = | |
433 | 1 << ext_csd[EXT_CSD_S_A_TIMEOUT]; | |
dfe86cba AH |
434 | card->ext_csd.erase_group_def = |
435 | ext_csd[EXT_CSD_ERASE_GROUP_DEF]; | |
436 | card->ext_csd.hc_erase_timeout = 300 * | |
437 | ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; | |
438 | card->ext_csd.hc_erase_size = | |
439 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] << 10; | |
f4c5522b AW |
440 | |
441 | card->ext_csd.rel_sectors = ext_csd[EXT_CSD_REL_WR_SEC_C]; | |
371a689f AW |
442 | |
443 | /* | |
444 | * There are two boot regions of equal size, defined in | |
445 | * multiples of 128K. | |
446 | */ | |
e0c368d5 NJ |
447 | if (ext_csd[EXT_CSD_BOOT_MULT] && mmc_boot_partition_access(card->host)) { |
448 | for (idx = 0; idx < MMC_NUM_BOOT_PARTITION; idx++) { | |
449 | part_size = ext_csd[EXT_CSD_BOOT_MULT] << 17; | |
450 | mmc_part_add(card, part_size, | |
451 | EXT_CSD_PART_CONFIG_ACC_BOOT0 + idx, | |
add710ea JR |
452 | "boot%d", idx, true, |
453 | MMC_BLK_DATA_AREA_BOOT); | |
e0c368d5 NJ |
454 | } |
455 | } | |
dfe86cba AH |
456 | } |
457 | ||
f39b2dd9 | 458 | card->ext_csd.raw_hc_erase_gap_size = |
dd13b4ed | 459 | ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; |
f39b2dd9 PR |
460 | card->ext_csd.raw_sec_trim_mult = |
461 | ext_csd[EXT_CSD_SEC_TRIM_MULT]; | |
462 | card->ext_csd.raw_sec_erase_mult = | |
463 | ext_csd[EXT_CSD_SEC_ERASE_MULT]; | |
464 | card->ext_csd.raw_sec_feature_support = | |
465 | ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; | |
466 | card->ext_csd.raw_trim_mult = | |
467 | ext_csd[EXT_CSD_TRIM_MULT]; | |
836dc2fe | 468 | card->ext_csd.raw_partition_support = ext_csd[EXT_CSD_PARTITION_SUPPORT]; |
b097e07f | 469 | card->ext_csd.raw_driver_strength = ext_csd[EXT_CSD_DRIVER_STRENGTH]; |
dfe86cba | 470 | if (card->ext_csd.rev >= 4) { |
69803d4f GS |
471 | if (ext_csd[EXT_CSD_PARTITION_SETTING_COMPLETED] & |
472 | EXT_CSD_PART_SETTING_COMPLETED) | |
473 | card->ext_csd.partition_setting_completed = 1; | |
474 | else | |
475 | card->ext_csd.partition_setting_completed = 0; | |
476 | ||
b4493eea | 477 | mmc_manage_enhanced_area(card, ext_csd); |
709de99d | 478 | |
b4493eea | 479 | mmc_manage_gp_partitions(card, ext_csd); |
e0c368d5 | 480 | |
dfe86cba AH |
481 | card->ext_csd.sec_trim_mult = |
482 | ext_csd[EXT_CSD_SEC_TRIM_MULT]; | |
483 | card->ext_csd.sec_erase_mult = | |
484 | ext_csd[EXT_CSD_SEC_ERASE_MULT]; | |
485 | card->ext_csd.sec_feature_support = | |
486 | ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; | |
487 | card->ext_csd.trim_timeout = 300 * | |
488 | ext_csd[EXT_CSD_TRIM_MULT]; | |
add710ea JR |
489 | |
490 | /* | |
491 | * Note that the call to mmc_part_add above defaults to read | |
492 | * only. If this default assumption is changed, the call must | |
493 | * take into account the value of boot_locked below. | |
494 | */ | |
495 | card->ext_csd.boot_ro_lock = ext_csd[EXT_CSD_BOOT_WP]; | |
496 | card->ext_csd.boot_ro_lockable = true; | |
60443712 FS |
497 | |
498 | /* Save power class values */ | |
499 | card->ext_csd.raw_pwr_cl_52_195 = | |
500 | ext_csd[EXT_CSD_PWR_CL_52_195]; | |
501 | card->ext_csd.raw_pwr_cl_26_195 = | |
502 | ext_csd[EXT_CSD_PWR_CL_26_195]; | |
503 | card->ext_csd.raw_pwr_cl_52_360 = | |
504 | ext_csd[EXT_CSD_PWR_CL_52_360]; | |
505 | card->ext_csd.raw_pwr_cl_26_360 = | |
506 | ext_csd[EXT_CSD_PWR_CL_26_360]; | |
507 | card->ext_csd.raw_pwr_cl_200_195 = | |
508 | ext_csd[EXT_CSD_PWR_CL_200_195]; | |
509 | card->ext_csd.raw_pwr_cl_200_360 = | |
510 | ext_csd[EXT_CSD_PWR_CL_200_360]; | |
511 | card->ext_csd.raw_pwr_cl_ddr_52_195 = | |
512 | ext_csd[EXT_CSD_PWR_CL_DDR_52_195]; | |
513 | card->ext_csd.raw_pwr_cl_ddr_52_360 = | |
514 | ext_csd[EXT_CSD_PWR_CL_DDR_52_360]; | |
0a5b6438 SJ |
515 | card->ext_csd.raw_pwr_cl_ddr_200_360 = |
516 | ext_csd[EXT_CSD_PWR_CL_DDR_200_360]; | |
b1ebe384 JL |
517 | } |
518 | ||
b2499518 | 519 | if (card->ext_csd.rev >= 5) { |
7c4f10ac RI |
520 | /* Adjust production date as per JEDEC JESD84-B451 */ |
521 | if (card->cid.year < 2010) | |
522 | card->cid.year += 16; | |
523 | ||
950d56ac | 524 | /* check whether the eMMC card supports BKOPS */ |
5320226a P |
525 | if (!mmc_card_broken_hpi(card) && |
526 | ext_csd[EXT_CSD_BKOPS_SUPPORT] & 0x1) { | |
950d56ac | 527 | card->ext_csd.bkops = 1; |
0501be64 AS |
528 | card->ext_csd.man_bkops_en = |
529 | (ext_csd[EXT_CSD_BKOPS_EN] & | |
530 | EXT_CSD_MANUAL_BKOPS_MASK); | |
950d56ac JC |
531 | card->ext_csd.raw_bkops_status = |
532 | ext_csd[EXT_CSD_BKOPS_STATUS]; | |
0501be64 | 533 | if (!card->ext_csd.man_bkops_en) |
4ec96b4c | 534 | pr_debug("%s: MAN_BKOPS_EN bit is not set\n", |
950d56ac JC |
535 | mmc_hostname(card->host)); |
536 | } | |
537 | ||
eb0d8f13 | 538 | /* check whether the eMMC card supports HPI */ |
5320226a P |
539 | if (!mmc_card_broken_hpi(card) && |
540 | !broken_hpi && (ext_csd[EXT_CSD_HPI_FEATURES] & 0x1)) { | |
eb0d8f13 JC |
541 | card->ext_csd.hpi = 1; |
542 | if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x2) | |
543 | card->ext_csd.hpi_cmd = MMC_STOP_TRANSMISSION; | |
544 | else | |
545 | card->ext_csd.hpi_cmd = MMC_SEND_STATUS; | |
546 | /* | |
547 | * Indicate the maximum timeout to close | |
548 | * a command interrupted by HPI | |
549 | */ | |
550 | card->ext_csd.out_of_int_time = | |
551 | ext_csd[EXT_CSD_OUT_OF_INTERRUPT_TIME] * 10; | |
552 | } | |
553 | ||
f4c5522b | 554 | card->ext_csd.rel_param = ext_csd[EXT_CSD_WR_REL_PARAM]; |
b2499518 | 555 | card->ext_csd.rst_n_function = ext_csd[EXT_CSD_RST_N_FUNCTION]; |
090d25fe LP |
556 | |
557 | /* | |
558 | * RPMB regions are defined in multiples of 128K. | |
559 | */ | |
560 | card->ext_csd.raw_rpmb_size_mult = ext_csd[EXT_CSD_RPMB_MULT]; | |
d0123cca | 561 | if (ext_csd[EXT_CSD_RPMB_MULT] && mmc_host_cmd23(card->host)) { |
090d25fe LP |
562 | mmc_part_add(card, ext_csd[EXT_CSD_RPMB_MULT] << 17, |
563 | EXT_CSD_PART_CONFIG_ACC_RPMB, | |
564 | "rpmb", 0, false, | |
565 | MMC_BLK_DATA_AREA_RPMB); | |
566 | } | |
b2499518 | 567 | } |
f4c5522b | 568 | |
5238acbe | 569 | card->ext_csd.raw_erased_mem_count = ext_csd[EXT_CSD_ERASED_MEM_CONT]; |
dfe86cba AH |
570 | if (ext_csd[EXT_CSD_ERASED_MEM_CONT]) |
571 | card->erased_byte = 0xFF; | |
572 | else | |
573 | card->erased_byte = 0x0; | |
574 | ||
336c716a | 575 | /* eMMC v4.5 or later */ |
fe1b5700 | 576 | card->ext_csd.generic_cmd6_time = DEFAULT_CMD6_TIMEOUT_MS; |
bec8726a | 577 | if (card->ext_csd.rev >= 6) { |
336c716a SJ |
578 | card->ext_csd.feature_support |= MMC_DISCARD_FEATURE; |
579 | ||
b23cf0bd SJ |
580 | card->ext_csd.generic_cmd6_time = 10 * |
581 | ext_csd[EXT_CSD_GENERIC_CMD6_TIME]; | |
bec8726a G |
582 | card->ext_csd.power_off_longtime = 10 * |
583 | ext_csd[EXT_CSD_POWER_OFF_LONG_TIME]; | |
b23cf0bd | 584 | |
336c716a SJ |
585 | card->ext_csd.cache_size = |
586 | ext_csd[EXT_CSD_CACHE_SIZE + 0] << 0 | | |
587 | ext_csd[EXT_CSD_CACHE_SIZE + 1] << 8 | | |
588 | ext_csd[EXT_CSD_CACHE_SIZE + 2] << 16 | | |
589 | ext_csd[EXT_CSD_CACHE_SIZE + 3] << 24; | |
4265900e SD |
590 | |
591 | if (ext_csd[EXT_CSD_DATA_SECTOR_SIZE] == 1) | |
592 | card->ext_csd.data_sector_size = 4096; | |
593 | else | |
594 | card->ext_csd.data_sector_size = 512; | |
595 | ||
596 | if ((ext_csd[EXT_CSD_DATA_TAG_SUPPORT] & 1) && | |
597 | (ext_csd[EXT_CSD_TAG_UNIT_SIZE] <= 8)) { | |
598 | card->ext_csd.data_tag_unit_size = | |
599 | ((unsigned int) 1 << ext_csd[EXT_CSD_TAG_UNIT_SIZE]) * | |
600 | (card->ext_csd.data_sector_size); | |
601 | } else { | |
602 | card->ext_csd.data_tag_unit_size = 0; | |
603 | } | |
abd9ac14 SJ |
604 | |
605 | card->ext_csd.max_packed_writes = | |
606 | ext_csd[EXT_CSD_MAX_PACKED_WRITES]; | |
607 | card->ext_csd.max_packed_reads = | |
608 | ext_csd[EXT_CSD_MAX_PACKED_READS]; | |
a5075eb9 SD |
609 | } else { |
610 | card->ext_csd.data_sector_size = 512; | |
336c716a | 611 | } |
881d1c25 | 612 | |
0f762426 GG |
613 | /* eMMC v5 or later */ |
614 | if (card->ext_csd.rev >= 7) { | |
615 | memcpy(card->ext_csd.fwrev, &ext_csd[EXT_CSD_FIRMWARE_VERSION], | |
616 | MMC_FIRMWARE_LEN); | |
617 | card->ext_csd.ffu_capable = | |
618 | (ext_csd[EXT_CSD_SUPPORTED_MODE] & 0x1) && | |
619 | !(ext_csd[EXT_CSD_FW_CONFIG] & 0x1); | |
620 | } | |
925ff3a7 AH |
621 | |
622 | /* eMMC v5.1 or later */ | |
623 | if (card->ext_csd.rev >= 8) { | |
624 | card->ext_csd.cmdq_support = ext_csd[EXT_CSD_CMDQ_SUPPORT] & | |
625 | EXT_CSD_CMDQ_SUPPORTED; | |
626 | card->ext_csd.cmdq_depth = (ext_csd[EXT_CSD_CMDQ_DEPTH] & | |
627 | EXT_CSD_CMDQ_DEPTH_MASK) + 1; | |
628 | /* Exclude inefficiently small queue depths */ | |
629 | if (card->ext_csd.cmdq_depth <= 2) { | |
630 | card->ext_csd.cmdq_support = false; | |
631 | card->ext_csd.cmdq_depth = 0; | |
632 | } | |
633 | if (card->ext_csd.cmdq_support) { | |
634 | pr_debug("%s: Command Queue supported depth %u\n", | |
635 | mmc_hostname(card->host), | |
636 | card->ext_csd.cmdq_depth); | |
637 | } | |
638 | } | |
7ea239d9 | 639 | out: |
08ee80cc PR |
640 | return err; |
641 | } | |
642 | ||
076ec38a UH |
643 | static int mmc_read_ext_csd(struct mmc_card *card) |
644 | { | |
c197787c | 645 | u8 *ext_csd; |
076ec38a UH |
646 | int err; |
647 | ||
c197787c UH |
648 | if (!mmc_can_ext_csd(card)) |
649 | return 0; | |
650 | ||
076ec38a | 651 | err = mmc_get_ext_csd(card, &ext_csd); |
c197787c UH |
652 | if (err) { |
653 | /* If the host or the card can't do the switch, | |
654 | * fail more gracefully. */ | |
655 | if ((err != -EINVAL) | |
656 | && (err != -ENOSYS) | |
657 | && (err != -EFAULT)) | |
658 | return err; | |
659 | ||
660 | /* | |
661 | * High capacity cards should have this "magic" size | |
662 | * stored in their CSD. | |
663 | */ | |
664 | if (card->csd.capacity == (4096 * 512)) { | |
665 | pr_err("%s: unable to read EXT_CSD on a possible high capacity card. Card will be ignored.\n", | |
666 | mmc_hostname(card->host)); | |
667 | } else { | |
668 | pr_warn("%s: unable to read EXT_CSD, performance might suffer\n", | |
669 | mmc_hostname(card->host)); | |
670 | err = 0; | |
671 | } | |
672 | ||
076ec38a | 673 | return err; |
c197787c | 674 | } |
076ec38a UH |
675 | |
676 | err = mmc_decode_ext_csd(card, ext_csd); | |
677 | kfree(ext_csd); | |
678 | return err; | |
679 | } | |
680 | ||
f39b2dd9 | 681 | static int mmc_compare_ext_csds(struct mmc_card *card, unsigned bus_width) |
08ee80cc PR |
682 | { |
683 | u8 *bw_ext_csd; | |
684 | int err; | |
685 | ||
f39b2dd9 PR |
686 | if (bus_width == MMC_BUS_WIDTH_1) |
687 | return 0; | |
688 | ||
08ee80cc | 689 | err = mmc_get_ext_csd(card, &bw_ext_csd); |
c197787c UH |
690 | if (err) |
691 | return err; | |
08ee80cc | 692 | |
08ee80cc | 693 | /* only compare read only fields */ |
dd13b4ed | 694 | err = !((card->ext_csd.raw_partition_support == |
08ee80cc | 695 | bw_ext_csd[EXT_CSD_PARTITION_SUPPORT]) && |
f39b2dd9 | 696 | (card->ext_csd.raw_erased_mem_count == |
08ee80cc | 697 | bw_ext_csd[EXT_CSD_ERASED_MEM_CONT]) && |
f39b2dd9 | 698 | (card->ext_csd.rev == |
08ee80cc | 699 | bw_ext_csd[EXT_CSD_REV]) && |
f39b2dd9 | 700 | (card->ext_csd.raw_ext_csd_structure == |
08ee80cc | 701 | bw_ext_csd[EXT_CSD_STRUCTURE]) && |
f39b2dd9 | 702 | (card->ext_csd.raw_card_type == |
08ee80cc | 703 | bw_ext_csd[EXT_CSD_CARD_TYPE]) && |
f39b2dd9 | 704 | (card->ext_csd.raw_s_a_timeout == |
08ee80cc | 705 | bw_ext_csd[EXT_CSD_S_A_TIMEOUT]) && |
f39b2dd9 | 706 | (card->ext_csd.raw_hc_erase_gap_size == |
08ee80cc | 707 | bw_ext_csd[EXT_CSD_HC_WP_GRP_SIZE]) && |
f39b2dd9 | 708 | (card->ext_csd.raw_erase_timeout_mult == |
08ee80cc | 709 | bw_ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]) && |
f39b2dd9 | 710 | (card->ext_csd.raw_hc_erase_grp_size == |
08ee80cc | 711 | bw_ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]) && |
f39b2dd9 | 712 | (card->ext_csd.raw_sec_trim_mult == |
08ee80cc | 713 | bw_ext_csd[EXT_CSD_SEC_TRIM_MULT]) && |
f39b2dd9 | 714 | (card->ext_csd.raw_sec_erase_mult == |
08ee80cc | 715 | bw_ext_csd[EXT_CSD_SEC_ERASE_MULT]) && |
f39b2dd9 | 716 | (card->ext_csd.raw_sec_feature_support == |
08ee80cc | 717 | bw_ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]) && |
f39b2dd9 | 718 | (card->ext_csd.raw_trim_mult == |
08ee80cc | 719 | bw_ext_csd[EXT_CSD_TRIM_MULT]) && |
f39b2dd9 PR |
720 | (card->ext_csd.raw_sectors[0] == |
721 | bw_ext_csd[EXT_CSD_SEC_CNT + 0]) && | |
722 | (card->ext_csd.raw_sectors[1] == | |
723 | bw_ext_csd[EXT_CSD_SEC_CNT + 1]) && | |
724 | (card->ext_csd.raw_sectors[2] == | |
725 | bw_ext_csd[EXT_CSD_SEC_CNT + 2]) && | |
726 | (card->ext_csd.raw_sectors[3] == | |
60443712 FS |
727 | bw_ext_csd[EXT_CSD_SEC_CNT + 3]) && |
728 | (card->ext_csd.raw_pwr_cl_52_195 == | |
729 | bw_ext_csd[EXT_CSD_PWR_CL_52_195]) && | |
730 | (card->ext_csd.raw_pwr_cl_26_195 == | |
731 | bw_ext_csd[EXT_CSD_PWR_CL_26_195]) && | |
732 | (card->ext_csd.raw_pwr_cl_52_360 == | |
733 | bw_ext_csd[EXT_CSD_PWR_CL_52_360]) && | |
734 | (card->ext_csd.raw_pwr_cl_26_360 == | |
735 | bw_ext_csd[EXT_CSD_PWR_CL_26_360]) && | |
736 | (card->ext_csd.raw_pwr_cl_200_195 == | |
737 | bw_ext_csd[EXT_CSD_PWR_CL_200_195]) && | |
738 | (card->ext_csd.raw_pwr_cl_200_360 == | |
739 | bw_ext_csd[EXT_CSD_PWR_CL_200_360]) && | |
740 | (card->ext_csd.raw_pwr_cl_ddr_52_195 == | |
741 | bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_195]) && | |
742 | (card->ext_csd.raw_pwr_cl_ddr_52_360 == | |
0a5b6438 SJ |
743 | bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_360]) && |
744 | (card->ext_csd.raw_pwr_cl_ddr_200_360 == | |
745 | bw_ext_csd[EXT_CSD_PWR_CL_DDR_200_360])); | |
746 | ||
08ee80cc PR |
747 | if (err) |
748 | err = -EINVAL; | |
749 | ||
00b41b58 | 750 | kfree(bw_ext_csd); |
7ea239d9 PO |
751 | return err; |
752 | } | |
753 | ||
51ec92e2 PO |
754 | MMC_DEV_ATTR(cid, "%08x%08x%08x%08x\n", card->raw_cid[0], card->raw_cid[1], |
755 | card->raw_cid[2], card->raw_cid[3]); | |
756 | MMC_DEV_ATTR(csd, "%08x%08x%08x%08x\n", card->raw_csd[0], card->raw_csd[1], | |
757 | card->raw_csd[2], card->raw_csd[3]); | |
758 | MMC_DEV_ATTR(date, "%02d/%04d\n", card->cid.month, card->cid.year); | |
dfe86cba AH |
759 | MMC_DEV_ATTR(erase_size, "%u\n", card->erase_size << 9); |
760 | MMC_DEV_ATTR(preferred_erase_size, "%u\n", card->pref_erase << 9); | |
0f762426 | 761 | MMC_DEV_ATTR(ffu_capable, "%d\n", card->ext_csd.ffu_capable); |
51ec92e2 PO |
762 | MMC_DEV_ATTR(hwrev, "0x%x\n", card->cid.hwrev); |
763 | MMC_DEV_ATTR(manfid, "0x%06x\n", card->cid.manfid); | |
764 | MMC_DEV_ATTR(name, "%s\n", card->cid.prod_name); | |
765 | MMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid); | |
51e7e8b6 | 766 | MMC_DEV_ATTR(prv, "0x%x\n", card->cid.prv); |
51ec92e2 | 767 | MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial); |
709de99d CD |
768 | MMC_DEV_ATTR(enhanced_area_offset, "%llu\n", |
769 | card->ext_csd.enhanced_area_offset); | |
770 | MMC_DEV_ATTR(enhanced_area_size, "%u\n", card->ext_csd.enhanced_area_size); | |
188cc042 LP |
771 | MMC_DEV_ATTR(raw_rpmb_size_mult, "%#x\n", card->ext_csd.raw_rpmb_size_mult); |
772 | MMC_DEV_ATTR(rel_sectors, "%#x\n", card->ext_csd.rel_sectors); | |
5fb06af7 | 773 | MMC_DEV_ATTR(ocr, "%08x\n", card->ocr); |
51ec92e2 | 774 | |
0f762426 GG |
775 | static ssize_t mmc_fwrev_show(struct device *dev, |
776 | struct device_attribute *attr, | |
777 | char *buf) | |
778 | { | |
779 | struct mmc_card *card = mmc_dev_to_card(dev); | |
780 | ||
781 | if (card->ext_csd.rev < 7) { | |
782 | return sprintf(buf, "0x%x\n", card->cid.fwrev); | |
783 | } else { | |
784 | return sprintf(buf, "0x%*phN\n", MMC_FIRMWARE_LEN, | |
785 | card->ext_csd.fwrev); | |
786 | } | |
787 | } | |
788 | ||
789 | static DEVICE_ATTR(fwrev, S_IRUGO, mmc_fwrev_show, NULL); | |
790 | ||
6825a606 BP |
791 | static ssize_t mmc_dsr_show(struct device *dev, |
792 | struct device_attribute *attr, | |
793 | char *buf) | |
794 | { | |
795 | struct mmc_card *card = mmc_dev_to_card(dev); | |
796 | struct mmc_host *host = card->host; | |
797 | ||
798 | if (card->csd.dsr_imp && host->dsr_req) | |
799 | return sprintf(buf, "0x%x\n", host->dsr); | |
800 | else | |
801 | /* return default DSR value */ | |
802 | return sprintf(buf, "0x%x\n", 0x404); | |
803 | } | |
804 | ||
805 | static DEVICE_ATTR(dsr, S_IRUGO, mmc_dsr_show, NULL); | |
806 | ||
51ec92e2 PO |
807 | static struct attribute *mmc_std_attrs[] = { |
808 | &dev_attr_cid.attr, | |
809 | &dev_attr_csd.attr, | |
810 | &dev_attr_date.attr, | |
dfe86cba AH |
811 | &dev_attr_erase_size.attr, |
812 | &dev_attr_preferred_erase_size.attr, | |
51ec92e2 | 813 | &dev_attr_fwrev.attr, |
0f762426 | 814 | &dev_attr_ffu_capable.attr, |
51ec92e2 PO |
815 | &dev_attr_hwrev.attr, |
816 | &dev_attr_manfid.attr, | |
817 | &dev_attr_name.attr, | |
818 | &dev_attr_oemid.attr, | |
51e7e8b6 | 819 | &dev_attr_prv.attr, |
51ec92e2 | 820 | &dev_attr_serial.attr, |
709de99d CD |
821 | &dev_attr_enhanced_area_offset.attr, |
822 | &dev_attr_enhanced_area_size.attr, | |
188cc042 LP |
823 | &dev_attr_raw_rpmb_size_mult.attr, |
824 | &dev_attr_rel_sectors.attr, | |
5fb06af7 | 825 | &dev_attr_ocr.attr, |
6825a606 | 826 | &dev_attr_dsr.attr, |
51ec92e2 PO |
827 | NULL, |
828 | }; | |
d1e58212 | 829 | ATTRIBUTE_GROUPS(mmc_std); |
51ec92e2 PO |
830 | |
831 | static struct device_type mmc_type = { | |
d1e58212 | 832 | .groups = mmc_std_groups, |
51ec92e2 PO |
833 | }; |
834 | ||
b87d8dbf G |
835 | /* |
836 | * Select the PowerClass for the current bus width | |
837 | * If power class is defined for 4/8 bit bus in the | |
838 | * extended CSD register, select it by executing the | |
839 | * mmc_switch command. | |
840 | */ | |
2385049d SJ |
841 | static int __mmc_select_powerclass(struct mmc_card *card, |
842 | unsigned int bus_width) | |
b87d8dbf | 843 | { |
2385049d SJ |
844 | struct mmc_host *host = card->host; |
845 | struct mmc_ext_csd *ext_csd = &card->ext_csd; | |
60443712 | 846 | unsigned int pwrclass_val = 0; |
2385049d | 847 | int err = 0; |
b87d8dbf | 848 | |
b87d8dbf G |
849 | switch (1 << host->ios.vdd) { |
850 | case MMC_VDD_165_195: | |
2385049d SJ |
851 | if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) |
852 | pwrclass_val = ext_csd->raw_pwr_cl_26_195; | |
853 | else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR) | |
60443712 | 854 | pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? |
2385049d SJ |
855 | ext_csd->raw_pwr_cl_52_195 : |
856 | ext_csd->raw_pwr_cl_ddr_52_195; | |
857 | else if (host->ios.clock <= MMC_HS200_MAX_DTR) | |
858 | pwrclass_val = ext_csd->raw_pwr_cl_200_195; | |
b87d8dbf | 859 | break; |
93fc5a47 SJ |
860 | case MMC_VDD_27_28: |
861 | case MMC_VDD_28_29: | |
862 | case MMC_VDD_29_30: | |
863 | case MMC_VDD_30_31: | |
864 | case MMC_VDD_31_32: | |
b87d8dbf G |
865 | case MMC_VDD_32_33: |
866 | case MMC_VDD_33_34: | |
867 | case MMC_VDD_34_35: | |
868 | case MMC_VDD_35_36: | |
2385049d SJ |
869 | if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) |
870 | pwrclass_val = ext_csd->raw_pwr_cl_26_360; | |
871 | else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR) | |
60443712 | 872 | pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? |
2385049d SJ |
873 | ext_csd->raw_pwr_cl_52_360 : |
874 | ext_csd->raw_pwr_cl_ddr_52_360; | |
875 | else if (host->ios.clock <= MMC_HS200_MAX_DTR) | |
0a5b6438 SJ |
876 | pwrclass_val = (bus_width == EXT_CSD_DDR_BUS_WIDTH_8) ? |
877 | ext_csd->raw_pwr_cl_ddr_200_360 : | |
878 | ext_csd->raw_pwr_cl_200_360; | |
b87d8dbf G |
879 | break; |
880 | default: | |
6606110d JP |
881 | pr_warn("%s: Voltage range not supported for power class\n", |
882 | mmc_hostname(host)); | |
b87d8dbf G |
883 | return -EINVAL; |
884 | } | |
885 | ||
b87d8dbf G |
886 | if (bus_width & (EXT_CSD_BUS_WIDTH_8 | EXT_CSD_DDR_BUS_WIDTH_8)) |
887 | pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_8BIT_MASK) >> | |
888 | EXT_CSD_PWR_CL_8BIT_SHIFT; | |
889 | else | |
890 | pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_4BIT_MASK) >> | |
891 | EXT_CSD_PWR_CL_4BIT_SHIFT; | |
892 | ||
893 | /* If the power class is different from the default value */ | |
894 | if (pwrclass_val > 0) { | |
895 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
896 | EXT_CSD_POWER_CLASS, | |
897 | pwrclass_val, | |
71fe3eb0 | 898 | card->ext_csd.generic_cmd6_time); |
b87d8dbf G |
899 | } |
900 | ||
901 | return err; | |
902 | } | |
903 | ||
2385049d SJ |
904 | static int mmc_select_powerclass(struct mmc_card *card) |
905 | { | |
906 | struct mmc_host *host = card->host; | |
907 | u32 bus_width, ext_csd_bits; | |
908 | int err, ddr; | |
909 | ||
910 | /* Power class selection is supported for versions >= 4.0 */ | |
148bcab2 | 911 | if (!mmc_can_ext_csd(card)) |
2385049d SJ |
912 | return 0; |
913 | ||
914 | bus_width = host->ios.bus_width; | |
915 | /* Power class values are defined only for 4/8 bit bus */ | |
916 | if (bus_width == MMC_BUS_WIDTH_1) | |
917 | return 0; | |
918 | ||
919 | ddr = card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52; | |
920 | if (ddr) | |
921 | ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? | |
922 | EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; | |
923 | else | |
924 | ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? | |
925 | EXT_CSD_BUS_WIDTH_8 : EXT_CSD_BUS_WIDTH_4; | |
926 | ||
927 | err = __mmc_select_powerclass(card, ext_csd_bits); | |
928 | if (err) | |
929 | pr_warn("%s: power class selection to bus width %d ddr %d failed\n", | |
930 | mmc_hostname(host), 1 << bus_width, ddr); | |
931 | ||
932 | return err; | |
933 | } | |
934 | ||
a4924c71 | 935 | /* |
577fb131 | 936 | * Set the bus speed for the selected speed mode. |
a4924c71 | 937 | */ |
577fb131 SJ |
938 | static void mmc_set_bus_speed(struct mmc_card *card) |
939 | { | |
940 | unsigned int max_dtr = (unsigned int)-1; | |
941 | ||
0a5b6438 SJ |
942 | if ((mmc_card_hs200(card) || mmc_card_hs400(card)) && |
943 | max_dtr > card->ext_csd.hs200_max_dtr) | |
577fb131 SJ |
944 | max_dtr = card->ext_csd.hs200_max_dtr; |
945 | else if (mmc_card_hs(card) && max_dtr > card->ext_csd.hs_max_dtr) | |
946 | max_dtr = card->ext_csd.hs_max_dtr; | |
947 | else if (max_dtr > card->csd.max_dtr) | |
948 | max_dtr = card->csd.max_dtr; | |
949 | ||
950 | mmc_set_clock(card->host, max_dtr); | |
951 | } | |
952 | ||
953 | /* | |
954 | * Select the bus width amoung 4-bit and 8-bit(SDR). | |
955 | * If the bus width is changed successfully, return the selected width value. | |
956 | * Zero is returned instead of error value if the wide width is not supported. | |
957 | */ | |
958 | static int mmc_select_bus_width(struct mmc_card *card) | |
a4924c71 | 959 | { |
a4924c71 | 960 | static unsigned ext_csd_bits[] = { |
a4924c71 | 961 | EXT_CSD_BUS_WIDTH_8, |
577fb131 | 962 | EXT_CSD_BUS_WIDTH_4, |
a4924c71 G |
963 | }; |
964 | static unsigned bus_widths[] = { | |
a4924c71 | 965 | MMC_BUS_WIDTH_8, |
577fb131 | 966 | MMC_BUS_WIDTH_4, |
a4924c71 | 967 | }; |
577fb131 SJ |
968 | struct mmc_host *host = card->host; |
969 | unsigned idx, bus_width = 0; | |
970 | int err = 0; | |
a4924c71 | 971 | |
1c2d26e3 | 972 | if (!mmc_can_ext_csd(card) || |
577fb131 SJ |
973 | !(host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) |
974 | return 0; | |
a4924c71 | 975 | |
577fb131 | 976 | idx = (host->caps & MMC_CAP_8_BIT_DATA) ? 0 : 1; |
a4924c71 G |
977 | |
978 | /* | |
979 | * Unlike SD, MMC cards dont have a configuration register to notify | |
980 | * supported bus width. So bus test command should be run to identify | |
981 | * the supported bus width or compare the ext csd values of current | |
982 | * bus width and ext csd values of 1 bit mode read earlier. | |
983 | */ | |
577fb131 | 984 | for (; idx < ARRAY_SIZE(bus_widths); idx++) { |
a4924c71 G |
985 | /* |
986 | * Host is capable of 8bit transfer, then switch | |
987 | * the device to work in 8bit transfer mode. If the | |
988 | * mmc switch command returns error then switch to | |
989 | * 4bit transfer mode. On success set the corresponding | |
990 | * bus width on the host. | |
991 | */ | |
992 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
993 | EXT_CSD_BUS_WIDTH, | |
994 | ext_csd_bits[idx], | |
995 | card->ext_csd.generic_cmd6_time); | |
996 | if (err) | |
997 | continue; | |
998 | ||
577fb131 SJ |
999 | bus_width = bus_widths[idx]; |
1000 | mmc_set_bus_width(host, bus_width); | |
a4924c71 | 1001 | |
577fb131 SJ |
1002 | /* |
1003 | * If controller can't handle bus width test, | |
1004 | * compare ext_csd previously read in 1 bit mode | |
1005 | * against ext_csd at new bus width | |
1006 | */ | |
a4924c71 | 1007 | if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST)) |
577fb131 | 1008 | err = mmc_compare_ext_csds(card, bus_width); |
a4924c71 | 1009 | else |
577fb131 SJ |
1010 | err = mmc_bus_test(card, bus_width); |
1011 | ||
1012 | if (!err) { | |
1013 | err = bus_width; | |
a4924c71 | 1014 | break; |
577fb131 SJ |
1015 | } else { |
1016 | pr_warn("%s: switch to bus width %d failed\n", | |
ed9feec7 | 1017 | mmc_hostname(host), 1 << bus_width); |
577fb131 | 1018 | } |
a4924c71 G |
1019 | } |
1020 | ||
577fb131 SJ |
1021 | return err; |
1022 | } | |
1023 | ||
1024 | /* | |
1025 | * Switch to the high-speed mode | |
1026 | */ | |
1027 | static int mmc_select_hs(struct mmc_card *card) | |
1028 | { | |
1029 | int err; | |
1030 | ||
1031 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1032 | EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS, | |
53e60650 UH |
1033 | card->ext_csd.generic_cmd6_time, MMC_TIMING_MMC_HS, |
1034 | true, true, true); | |
67d35960 JL |
1035 | if (err) |
1036 | pr_warn("%s: switch to high-speed failed, err:%d\n", | |
1037 | mmc_hostname(card->host), err); | |
1038 | ||
577fb131 SJ |
1039 | return err; |
1040 | } | |
1041 | ||
1042 | /* | |
1043 | * Activate wide bus and DDR if supported. | |
1044 | */ | |
1045 | static int mmc_select_hs_ddr(struct mmc_card *card) | |
1046 | { | |
1047 | struct mmc_host *host = card->host; | |
1048 | u32 bus_width, ext_csd_bits; | |
1049 | int err = 0; | |
1050 | ||
1051 | if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52)) | |
1052 | return 0; | |
1053 | ||
1054 | bus_width = host->ios.bus_width; | |
1055 | if (bus_width == MMC_BUS_WIDTH_1) | |
1056 | return 0; | |
1057 | ||
1058 | ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? | |
1059 | EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; | |
1060 | ||
e173f891 UH |
1061 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
1062 | EXT_CSD_BUS_WIDTH, | |
1063 | ext_csd_bits, | |
1064 | card->ext_csd.generic_cmd6_time, | |
1065 | MMC_TIMING_MMC_DDR52, | |
1066 | true, true, true); | |
577fb131 | 1067 | if (err) { |
4b75bffc | 1068 | pr_err("%s: switch to bus width %d ddr failed\n", |
577fb131 SJ |
1069 | mmc_hostname(host), 1 << bus_width); |
1070 | return err; | |
1071 | } | |
1072 | ||
1073 | /* | |
1074 | * eMMC cards can support 3.3V to 1.2V i/o (vccq) | |
1075 | * signaling. | |
1076 | * | |
1077 | * EXT_CSD_CARD_TYPE_DDR_1_8V means 3.3V or 1.8V vccq. | |
1078 | * | |
1079 | * 1.8V vccq at 3.3V core voltage (vcc) is not required | |
1080 | * in the JEDEC spec for DDR. | |
1081 | * | |
312449ef CD |
1082 | * Even (e)MMC card can support 3.3v to 1.2v vccq, but not all |
1083 | * host controller can support this, like some of the SDHCI | |
1084 | * controller which connect to an eMMC device. Some of these | |
1085 | * host controller still needs to use 1.8v vccq for supporting | |
1086 | * DDR mode. | |
1087 | * | |
1088 | * So the sequence will be: | |
1089 | * if (host and device can both support 1.2v IO) | |
1090 | * use 1.2v IO; | |
1091 | * else if (host and device can both support 1.8v IO) | |
1092 | * use 1.8v IO; | |
1093 | * so if host and device can only support 3.3v IO, this is the | |
1094 | * last choice. | |
577fb131 SJ |
1095 | * |
1096 | * WARNING: eMMC rules are NOT the same as SD DDR | |
1097 | */ | |
312449ef CD |
1098 | err = -EINVAL; |
1099 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_2V) | |
1100 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); | |
577fb131 | 1101 | |
312449ef CD |
1102 | if (err && (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_8V)) |
1103 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); | |
1104 | ||
1105 | /* make sure vccq is 3.3v after switching disaster */ | |
1106 | if (err) | |
1107 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330); | |
1108 | ||
577fb131 SJ |
1109 | return err; |
1110 | } | |
1111 | ||
0a5b6438 SJ |
1112 | static int mmc_select_hs400(struct mmc_card *card) |
1113 | { | |
1114 | struct mmc_host *host = card->host; | |
51b12f77 | 1115 | unsigned int max_dtr; |
0a5b6438 | 1116 | int err = 0; |
cc4f414c | 1117 | u8 val; |
0a5b6438 SJ |
1118 | |
1119 | /* | |
1120 | * HS400 mode requires 8-bit bus width | |
1121 | */ | |
1122 | if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 && | |
1123 | host->ios.bus_width == MMC_BUS_WIDTH_8)) | |
1124 | return 0; | |
1125 | ||
51b12f77 | 1126 | /* Switch card to HS mode */ |
adb24d42 | 1127 | val = EXT_CSD_TIMING_HS; |
0a5b6438 | 1128 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
cc4f414c | 1129 | EXT_CSD_HS_TIMING, val, |
aa33ce3c | 1130 | card->ext_csd.generic_cmd6_time, 0, |
08573eaf | 1131 | true, false, true); |
0a5b6438 | 1132 | if (err) { |
4b75bffc | 1133 | pr_err("%s: switch to high-speed from hs200 failed, err:%d\n", |
0a5b6438 SJ |
1134 | mmc_hostname(host), err); |
1135 | return err; | |
1136 | } | |
1137 | ||
51b12f77 AH |
1138 | /* Set host controller to HS timing */ |
1139 | mmc_set_timing(card->host, MMC_TIMING_MMC_HS); | |
1140 | ||
649c6059 ZX |
1141 | /* Reduce frequency to HS frequency */ |
1142 | max_dtr = card->ext_csd.hs_max_dtr; | |
1143 | mmc_set_clock(host, max_dtr); | |
1144 | ||
08573eaf CJ |
1145 | err = mmc_switch_status(card); |
1146 | if (err) | |
1147 | goto out_err; | |
d2302933 AH |
1148 | |
1149 | /* Switch card to DDR */ | |
0a5b6438 SJ |
1150 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
1151 | EXT_CSD_BUS_WIDTH, | |
1152 | EXT_CSD_DDR_BUS_WIDTH_8, | |
1153 | card->ext_csd.generic_cmd6_time); | |
1154 | if (err) { | |
4b75bffc | 1155 | pr_err("%s: switch to bus width for hs400 failed, err:%d\n", |
0a5b6438 SJ |
1156 | mmc_hostname(host), err); |
1157 | return err; | |
1158 | } | |
1159 | ||
d2302933 | 1160 | /* Switch card to HS400 */ |
cc4f414c AH |
1161 | val = EXT_CSD_TIMING_HS400 | |
1162 | card->drive_strength << EXT_CSD_DRV_STR_SHIFT; | |
0a5b6438 | 1163 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
cc4f414c | 1164 | EXT_CSD_HS_TIMING, val, |
aa33ce3c | 1165 | card->ext_csd.generic_cmd6_time, 0, |
08573eaf | 1166 | true, false, true); |
0a5b6438 | 1167 | if (err) { |
4b75bffc | 1168 | pr_err("%s: switch to hs400 failed, err:%d\n", |
0a5b6438 SJ |
1169 | mmc_hostname(host), err); |
1170 | return err; | |
1171 | } | |
1172 | ||
d2302933 | 1173 | /* Set host controller to HS400 timing and frequency */ |
0a5b6438 SJ |
1174 | mmc_set_timing(host, MMC_TIMING_MMC_HS400); |
1175 | mmc_set_bus_speed(card); | |
1176 | ||
08573eaf CJ |
1177 | err = mmc_switch_status(card); |
1178 | if (err) | |
1179 | goto out_err; | |
d2302933 | 1180 | |
0a5b6438 | 1181 | return 0; |
d2302933 AH |
1182 | |
1183 | out_err: | |
1184 | pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), | |
1185 | __func__, err); | |
1186 | return err; | |
0a5b6438 SJ |
1187 | } |
1188 | ||
6376f69d AH |
1189 | int mmc_hs200_to_hs400(struct mmc_card *card) |
1190 | { | |
1191 | return mmc_select_hs400(card); | |
1192 | } | |
1193 | ||
6376f69d AH |
1194 | int mmc_hs400_to_hs200(struct mmc_card *card) |
1195 | { | |
1196 | struct mmc_host *host = card->host; | |
6376f69d AH |
1197 | unsigned int max_dtr; |
1198 | int err; | |
cc4f414c | 1199 | u8 val; |
6376f69d | 1200 | |
6376f69d AH |
1201 | /* Reduce frequency to HS */ |
1202 | max_dtr = card->ext_csd.hs_max_dtr; | |
1203 | mmc_set_clock(host, max_dtr); | |
1204 | ||
1205 | /* Switch HS400 to HS DDR */ | |
adb24d42 | 1206 | val = EXT_CSD_TIMING_HS; |
6376f69d | 1207 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, |
aa33ce3c | 1208 | val, card->ext_csd.generic_cmd6_time, 0, |
08573eaf | 1209 | true, false, true); |
6376f69d AH |
1210 | if (err) |
1211 | goto out_err; | |
1212 | ||
1213 | mmc_set_timing(host, MMC_TIMING_MMC_DDR52); | |
1214 | ||
08573eaf CJ |
1215 | err = mmc_switch_status(card); |
1216 | if (err) | |
1217 | goto out_err; | |
6376f69d AH |
1218 | |
1219 | /* Switch HS DDR to HS */ | |
1220 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BUS_WIDTH, | |
1221 | EXT_CSD_BUS_WIDTH_8, card->ext_csd.generic_cmd6_time, | |
aa33ce3c | 1222 | 0, true, false, true); |
6376f69d AH |
1223 | if (err) |
1224 | goto out_err; | |
1225 | ||
1226 | mmc_set_timing(host, MMC_TIMING_MMC_HS); | |
1227 | ||
08573eaf CJ |
1228 | err = mmc_switch_status(card); |
1229 | if (err) | |
1230 | goto out_err; | |
6376f69d AH |
1231 | |
1232 | /* Switch HS to HS200 */ | |
cc4f414c AH |
1233 | val = EXT_CSD_TIMING_HS200 | |
1234 | card->drive_strength << EXT_CSD_DRV_STR_SHIFT; | |
6376f69d | 1235 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, |
aa33ce3c | 1236 | val, card->ext_csd.generic_cmd6_time, 0, |
08573eaf | 1237 | true, false, true); |
6376f69d AH |
1238 | if (err) |
1239 | goto out_err; | |
1240 | ||
1241 | mmc_set_timing(host, MMC_TIMING_MMC_HS200); | |
1242 | ||
08573eaf CJ |
1243 | err = mmc_switch_status(card); |
1244 | if (err) | |
1245 | goto out_err; | |
6376f69d AH |
1246 | |
1247 | mmc_set_bus_speed(card); | |
1248 | ||
1249 | return 0; | |
1250 | ||
1251 | out_err: | |
1252 | pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), | |
1253 | __func__, err); | |
1254 | return err; | |
1255 | } | |
1256 | ||
81ac2af6 SL |
1257 | static int mmc_select_hs400es(struct mmc_card *card) |
1258 | { | |
1259 | struct mmc_host *host = card->host; | |
1260 | int err = 0; | |
1261 | u8 val; | |
1262 | ||
1263 | if (!(host->caps & MMC_CAP_8_BIT_DATA)) { | |
1264 | err = -ENOTSUPP; | |
1265 | goto out_err; | |
1266 | } | |
1267 | ||
1720d354 SL |
1268 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400_1_2V) |
1269 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); | |
1270 | ||
1271 | if (err && card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400_1_8V) | |
1272 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); | |
1273 | ||
1274 | /* If fails try again during next card power cycle */ | |
1275 | if (err) | |
1276 | goto out_err; | |
1277 | ||
81ac2af6 SL |
1278 | err = mmc_select_bus_width(card); |
1279 | if (err < 0) | |
1280 | goto out_err; | |
1281 | ||
1282 | /* Switch card to HS mode */ | |
53e60650 UH |
1283 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
1284 | EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS, | |
1285 | card->ext_csd.generic_cmd6_time, 0, | |
1286 | true, false, true); | |
1287 | if (err) { | |
1288 | pr_err("%s: switch to hs for hs400es failed, err:%d\n", | |
1289 | mmc_hostname(host), err); | |
81ac2af6 | 1290 | goto out_err; |
53e60650 | 1291 | } |
81ac2af6 | 1292 | |
53e60650 | 1293 | mmc_set_timing(host, MMC_TIMING_MMC_HS); |
81ac2af6 SL |
1294 | err = mmc_switch_status(card); |
1295 | if (err) | |
1296 | goto out_err; | |
1297 | ||
53e60650 UH |
1298 | mmc_set_clock(host, card->ext_csd.hs_max_dtr); |
1299 | ||
81ac2af6 SL |
1300 | /* Switch card to DDR with strobe bit */ |
1301 | val = EXT_CSD_DDR_BUS_WIDTH_8 | EXT_CSD_BUS_WIDTH_STROBE; | |
1302 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1303 | EXT_CSD_BUS_WIDTH, | |
1304 | val, | |
1305 | card->ext_csd.generic_cmd6_time); | |
1306 | if (err) { | |
1307 | pr_err("%s: switch to bus width for hs400es failed, err:%d\n", | |
1308 | mmc_hostname(host), err); | |
1309 | goto out_err; | |
1310 | } | |
1311 | ||
1312 | /* Switch card to HS400 */ | |
1313 | val = EXT_CSD_TIMING_HS400 | | |
1314 | card->drive_strength << EXT_CSD_DRV_STR_SHIFT; | |
1315 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1316 | EXT_CSD_HS_TIMING, val, | |
aa33ce3c | 1317 | card->ext_csd.generic_cmd6_time, 0, |
81ac2af6 SL |
1318 | true, false, true); |
1319 | if (err) { | |
1320 | pr_err("%s: switch to hs400es failed, err:%d\n", | |
1321 | mmc_hostname(host), err); | |
1322 | goto out_err; | |
1323 | } | |
1324 | ||
1325 | /* Set host controller to HS400 timing and frequency */ | |
1326 | mmc_set_timing(host, MMC_TIMING_MMC_HS400); | |
1327 | ||
1328 | /* Controller enable enhanced strobe function */ | |
1329 | host->ios.enhanced_strobe = true; | |
1330 | if (host->ops->hs400_enhanced_strobe) | |
1331 | host->ops->hs400_enhanced_strobe(host, &host->ios); | |
1332 | ||
1333 | err = mmc_switch_status(card); | |
1334 | if (err) | |
1335 | goto out_err; | |
1336 | ||
1337 | return 0; | |
1338 | ||
1339 | out_err: | |
1340 | pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), | |
1341 | __func__, err); | |
1342 | return err; | |
1343 | } | |
1344 | ||
cc4f414c AH |
1345 | static void mmc_select_driver_type(struct mmc_card *card) |
1346 | { | |
1347 | int card_drv_type, drive_strength, drv_type; | |
1348 | ||
1349 | card_drv_type = card->ext_csd.raw_driver_strength | | |
1350 | mmc_driver_type_mask(0); | |
1351 | ||
1352 | drive_strength = mmc_select_drive_strength(card, | |
1353 | card->ext_csd.hs200_max_dtr, | |
1354 | card_drv_type, &drv_type); | |
1355 | ||
1356 | card->drive_strength = drive_strength; | |
1357 | ||
1358 | if (drv_type) | |
1359 | mmc_set_driver_type(card->host, drv_type); | |
1360 | } | |
1361 | ||
577fb131 SJ |
1362 | /* |
1363 | * For device supporting HS200 mode, the following sequence | |
1364 | * should be done before executing the tuning process. | |
1365 | * 1. set the desired bus width(4-bit or 8-bit, 1-bit is not supported) | |
1366 | * 2. switch to HS200 mode | |
1367 | * 3. set the clock to > 52Mhz and <=200MHz | |
1368 | */ | |
1369 | static int mmc_select_hs200(struct mmc_card *card) | |
1370 | { | |
1371 | struct mmc_host *host = card->host; | |
e51534c8 | 1372 | unsigned int old_timing, old_signal_voltage; |
577fb131 | 1373 | int err = -EINVAL; |
cc4f414c | 1374 | u8 val; |
577fb131 | 1375 | |
e51534c8 | 1376 | old_signal_voltage = host->ios.signal_voltage; |
577fb131 SJ |
1377 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_2V) |
1378 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); | |
1379 | ||
1380 | if (err && card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_8V) | |
1381 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); | |
1382 | ||
1383 | /* If fails try again during next card power cycle */ | |
1384 | if (err) | |
e51534c8 | 1385 | return err; |
577fb131 | 1386 | |
cc4f414c AH |
1387 | mmc_select_driver_type(card); |
1388 | ||
577fb131 SJ |
1389 | /* |
1390 | * Set the bus width(4 or 8) with host's support and | |
1391 | * switch to HS200 mode if bus width is set successfully. | |
1392 | */ | |
1393 | err = mmc_select_bus_width(card); | |
8b7be8f2 | 1394 | if (err > 0) { |
cc4f414c AH |
1395 | val = EXT_CSD_TIMING_HS200 | |
1396 | card->drive_strength << EXT_CSD_DRV_STR_SHIFT; | |
4509f847 | 1397 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
cc4f414c | 1398 | EXT_CSD_HS_TIMING, val, |
aa33ce3c | 1399 | card->ext_csd.generic_cmd6_time, 0, |
08573eaf | 1400 | true, false, true); |
1815e61b AH |
1401 | if (err) |
1402 | goto err; | |
1403 | old_timing = host->ios.timing; | |
1404 | mmc_set_timing(host, MMC_TIMING_MMC_HS200); | |
08573eaf CJ |
1405 | |
1406 | err = mmc_switch_status(card); | |
1407 | /* | |
1408 | * mmc_select_timing() assumes timing has not changed if | |
1409 | * it is a switch error. | |
1410 | */ | |
1411 | if (err == -EBADMSG) | |
1412 | mmc_set_timing(host, old_timing); | |
577fb131 | 1413 | } |
a4924c71 | 1414 | err: |
e51534c8 DA |
1415 | if (err) { |
1416 | /* fall back to the old signal voltage, if fails report error */ | |
1417 | if (__mmc_set_signal_voltage(host, old_signal_voltage)) | |
1418 | err = -EIO; | |
1419 | ||
1815e61b AH |
1420 | pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), |
1421 | __func__, err); | |
e51534c8 | 1422 | } |
a4924c71 G |
1423 | return err; |
1424 | } | |
1425 | ||
577fb131 | 1426 | /* |
81ac2af6 | 1427 | * Activate High Speed, HS200 or HS400ES mode if supported. |
577fb131 SJ |
1428 | */ |
1429 | static int mmc_select_timing(struct mmc_card *card) | |
1430 | { | |
1431 | int err = 0; | |
1432 | ||
148bcab2 | 1433 | if (!mmc_can_ext_csd(card)) |
577fb131 SJ |
1434 | goto bus_speed; |
1435 | ||
81ac2af6 SL |
1436 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400ES) |
1437 | err = mmc_select_hs400es(card); | |
1438 | else if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200) | |
577fb131 SJ |
1439 | err = mmc_select_hs200(card); |
1440 | else if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS) | |
1441 | err = mmc_select_hs(card); | |
1442 | ||
1443 | if (err && err != -EBADMSG) | |
1444 | return err; | |
1445 | ||
577fb131 SJ |
1446 | bus_speed: |
1447 | /* | |
1448 | * Set the bus speed to the selected bus timing. | |
1449 | * If timing is not selected, backward compatible is the default. | |
1450 | */ | |
1451 | mmc_set_bus_speed(card); | |
0400ed0a | 1452 | return 0; |
577fb131 SJ |
1453 | } |
1454 | ||
1455 | /* | |
1456 | * Execute tuning sequence to seek the proper bus operating | |
0a5b6438 | 1457 | * conditions for HS200 and HS400, which sends CMD21 to the device. |
577fb131 SJ |
1458 | */ |
1459 | static int mmc_hs200_tuning(struct mmc_card *card) | |
1460 | { | |
1461 | struct mmc_host *host = card->host; | |
577fb131 | 1462 | |
0a5b6438 SJ |
1463 | /* |
1464 | * Timing should be adjusted to the HS400 target | |
1465 | * operation frequency for tuning process | |
1466 | */ | |
1467 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 && | |
1468 | host->ios.bus_width == MMC_BUS_WIDTH_8) | |
1469 | if (host->ops->prepare_hs400_tuning) | |
1470 | host->ops->prepare_hs400_tuning(host, &host->ios); | |
1471 | ||
63e415c6 | 1472 | return mmc_execute_tuning(card); |
577fb131 SJ |
1473 | } |
1474 | ||
7ea239d9 | 1475 | /* |
6abaa0c9 PO |
1476 | * Handle the detection and initialisation of a card. |
1477 | * | |
8769392b | 1478 | * In the case of a resume, "oldcard" will contain the card |
6abaa0c9 | 1479 | * we're trying to reinitialise. |
7ea239d9 | 1480 | */ |
8c75deae | 1481 | static int mmc_init_card(struct mmc_host *host, u32 ocr, |
6abaa0c9 | 1482 | struct mmc_card *oldcard) |
7ea239d9 PO |
1483 | { |
1484 | struct mmc_card *card; | |
577fb131 | 1485 | int err; |
7ea239d9 | 1486 | u32 cid[4]; |
b676f039 | 1487 | u32 rocr; |
7ea239d9 | 1488 | |
d84075c8 | 1489 | WARN_ON(!host->claimed); |
7ea239d9 | 1490 | |
44669034 SNX |
1491 | /* Set correct bus mode for MMC before attempting init */ |
1492 | if (!mmc_host_is_spi(host)) | |
1493 | mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); | |
1494 | ||
7ea239d9 PO |
1495 | /* |
1496 | * Since we're changing the OCR value, we seem to | |
1497 | * need to tell some cards to go back to the idle | |
1498 | * state. We wait 1ms to give cards time to | |
1499 | * respond. | |
c3805467 | 1500 | * mmc_go_idle is needed for eMMC that are asleep |
7ea239d9 PO |
1501 | */ |
1502 | mmc_go_idle(host); | |
1503 | ||
1504 | /* The extra bit indicates that we support high capacity */ | |
b676f039 | 1505 | err = mmc_send_op_cond(host, ocr | (1 << 30), &rocr); |
17b0429d | 1506 | if (err) |
6abaa0c9 | 1507 | goto err; |
7ea239d9 | 1508 | |
af517150 DB |
1509 | /* |
1510 | * For SPI, enable CRC as appropriate. | |
1511 | */ | |
1512 | if (mmc_host_is_spi(host)) { | |
1513 | err = mmc_spi_set_crc(host, use_spi_crc); | |
1514 | if (err) | |
1515 | goto err; | |
1516 | } | |
1517 | ||
7ea239d9 PO |
1518 | /* |
1519 | * Fetch CID from card. | |
1520 | */ | |
af517150 DB |
1521 | if (mmc_host_is_spi(host)) |
1522 | err = mmc_send_cid(host, cid); | |
1523 | else | |
1524 | err = mmc_all_send_cid(host, cid); | |
17b0429d | 1525 | if (err) |
7ea239d9 PO |
1526 | goto err; |
1527 | ||
6abaa0c9 | 1528 | if (oldcard) { |
adf66a0d PO |
1529 | if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) { |
1530 | err = -ENOENT; | |
6abaa0c9 | 1531 | goto err; |
adf66a0d | 1532 | } |
6abaa0c9 PO |
1533 | |
1534 | card = oldcard; | |
1535 | } else { | |
1536 | /* | |
1537 | * Allocate card structure. | |
1538 | */ | |
51ec92e2 | 1539 | card = mmc_alloc_card(host, &mmc_type); |
adf66a0d PO |
1540 | if (IS_ERR(card)) { |
1541 | err = PTR_ERR(card); | |
6abaa0c9 | 1542 | goto err; |
adf66a0d | 1543 | } |
7ea239d9 | 1544 | |
69041150 | 1545 | card->ocr = ocr; |
6abaa0c9 PO |
1546 | card->type = MMC_TYPE_MMC; |
1547 | card->rca = 1; | |
1548 | memcpy(card->raw_cid, cid, sizeof(card->raw_cid)); | |
1549 | } | |
7ea239d9 | 1550 | |
eac86321 DA |
1551 | /* |
1552 | * Call the optional HC's init_card function to handle quirks. | |
1553 | */ | |
1554 | if (host->ops->init_card) | |
1555 | host->ops->init_card(host, card); | |
1556 | ||
7ea239d9 | 1557 | /* |
af517150 | 1558 | * For native busses: set card RCA and quit open drain mode. |
7ea239d9 | 1559 | */ |
af517150 DB |
1560 | if (!mmc_host_is_spi(host)) { |
1561 | err = mmc_set_relative_addr(card); | |
1562 | if (err) | |
1563 | goto free_card; | |
7ea239d9 | 1564 | |
af517150 DB |
1565 | mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL); |
1566 | } | |
7ea239d9 | 1567 | |
6abaa0c9 PO |
1568 | if (!oldcard) { |
1569 | /* | |
1570 | * Fetch CSD from card. | |
1571 | */ | |
1572 | err = mmc_send_csd(card, card->raw_csd); | |
17b0429d | 1573 | if (err) |
6abaa0c9 | 1574 | goto free_card; |
7ea239d9 | 1575 | |
bd766312 | 1576 | err = mmc_decode_csd(card); |
adf66a0d | 1577 | if (err) |
bd766312 PO |
1578 | goto free_card; |
1579 | err = mmc_decode_cid(card); | |
adf66a0d | 1580 | if (err) |
bd766312 | 1581 | goto free_card; |
6abaa0c9 | 1582 | } |
7ea239d9 | 1583 | |
3d705d14 SH |
1584 | /* |
1585 | * handling only for cards supporting DSR and hosts requesting | |
1586 | * DSR configuration | |
1587 | */ | |
1588 | if (card->csd.dsr_imp && host->dsr_req) | |
1589 | mmc_set_dsr(host); | |
1590 | ||
7ea239d9 | 1591 | /* |
89a73cf5 | 1592 | * Select card, as all following commands rely on that. |
7ea239d9 | 1593 | */ |
af517150 DB |
1594 | if (!mmc_host_is_spi(host)) { |
1595 | err = mmc_select_card(card); | |
1596 | if (err) | |
1597 | goto free_card; | |
1598 | } | |
7ea239d9 | 1599 | |
6abaa0c9 | 1600 | if (!oldcard) { |
076ec38a UH |
1601 | /* Read extended CSD. */ |
1602 | err = mmc_read_ext_csd(card); | |
17b0429d | 1603 | if (err) |
6abaa0c9 | 1604 | goto free_card; |
b676f039 | 1605 | |
87e88659 MY |
1606 | /* |
1607 | * If doing byte addressing, check if required to do sector | |
b676f039 PR |
1608 | * addressing. Handle the case of <2GB cards needing sector |
1609 | * addressing. See section 8.1 JEDEC Standard JED84-A441; | |
1610 | * ocr register has bit 30 set for sector addressing. | |
1611 | */ | |
87e88659 | 1612 | if (rocr & BIT(30)) |
b676f039 PR |
1613 | mmc_card_set_blockaddr(card); |
1614 | ||
dfe86cba AH |
1615 | /* Erase size depends on CSD and Extended CSD */ |
1616 | mmc_set_erase_size(card); | |
6abaa0c9 | 1617 | } |
7ea239d9 | 1618 | |
709de99d CD |
1619 | /* |
1620 | * If enhanced_area_en is TRUE, host needs to enable ERASE_GRP_DEF | |
25985edc | 1621 | * bit. This bit will be lost every time after a reset or power off. |
709de99d | 1622 | */ |
69803d4f | 1623 | if (card->ext_csd.partition_setting_completed || |
83bb24aa | 1624 | (card->ext_csd.rev >= 3 && (host->caps2 & MMC_CAP2_HC_ERASE_SZ))) { |
709de99d | 1625 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
b23cf0bd SJ |
1626 | EXT_CSD_ERASE_GROUP_DEF, 1, |
1627 | card->ext_csd.generic_cmd6_time); | |
709de99d CD |
1628 | |
1629 | if (err && err != -EBADMSG) | |
1630 | goto free_card; | |
1631 | ||
1632 | if (err) { | |
1633 | err = 0; | |
1634 | /* | |
1635 | * Just disable enhanced area off & sz | |
1636 | * will try to enable ERASE_GROUP_DEF | |
1637 | * during next time reinit | |
1638 | */ | |
1639 | card->ext_csd.enhanced_area_offset = -EINVAL; | |
1640 | card->ext_csd.enhanced_area_size = -EINVAL; | |
1641 | } else { | |
1642 | card->ext_csd.erase_group_def = 1; | |
1643 | /* | |
1644 | * enable ERASE_GRP_DEF successfully. | |
1645 | * This will affect the erase size, so | |
1646 | * here need to reset erase size | |
1647 | */ | |
1648 | mmc_set_erase_size(card); | |
1649 | } | |
1650 | } | |
1651 | ||
41e2a489 PR |
1652 | /* |
1653 | * Ensure eMMC user default partition is enabled | |
1654 | */ | |
371a689f AW |
1655 | if (card->ext_csd.part_config & EXT_CSD_PART_CONFIG_ACC_MASK) { |
1656 | card->ext_csd.part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK; | |
1657 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONFIG, | |
1658 | card->ext_csd.part_config, | |
1659 | card->ext_csd.part_time); | |
1660 | if (err && err != -EBADMSG) | |
1661 | goto free_card; | |
41e2a489 PR |
1662 | } |
1663 | ||
bec8726a | 1664 | /* |
43235679 | 1665 | * Enable power_off_notification byte in the ext_csd register |
bec8726a | 1666 | */ |
43235679 | 1667 | if (card->ext_csd.rev >= 6) { |
bec8726a G |
1668 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
1669 | EXT_CSD_POWER_OFF_NOTIFICATION, | |
1670 | EXT_CSD_POWER_ON, | |
1671 | card->ext_csd.generic_cmd6_time); | |
1672 | if (err && err != -EBADMSG) | |
1673 | goto free_card; | |
bec8726a | 1674 | |
96a85d54 G |
1675 | /* |
1676 | * The err can be -EBADMSG or 0, | |
1677 | * so check for success and update the flag | |
1678 | */ | |
1679 | if (!err) | |
e6c08586 | 1680 | card->ext_csd.power_off_notification = EXT_CSD_POWER_ON; |
96a85d54 | 1681 | } |
bec8726a | 1682 | |
89a73cf5 | 1683 | /* |
577fb131 | 1684 | * Select timing interface |
dfc13e84 | 1685 | */ |
577fb131 SJ |
1686 | err = mmc_select_timing(card); |
1687 | if (err) | |
1688 | goto free_card; | |
dfc13e84 | 1689 | |
a4924c71 | 1690 | if (mmc_card_hs200(card)) { |
577fb131 SJ |
1691 | err = mmc_hs200_tuning(card); |
1692 | if (err) | |
4b75bffc | 1693 | goto free_card; |
0a5b6438 SJ |
1694 | |
1695 | err = mmc_select_hs400(card); | |
1696 | if (err) | |
4b75bffc | 1697 | goto free_card; |
577fb131 SJ |
1698 | } else if (mmc_card_hs(card)) { |
1699 | /* Select the desired bus width optionally */ | |
1700 | err = mmc_select_bus_width(card); | |
8b7be8f2 | 1701 | if (err > 0) { |
577fb131 SJ |
1702 | err = mmc_select_hs_ddr(card); |
1703 | if (err) | |
4b75bffc | 1704 | goto free_card; |
ef0b27d4 | 1705 | } |
89a73cf5 PO |
1706 | } |
1707 | ||
2385049d SJ |
1708 | /* |
1709 | * Choose the power class with selected bus interface | |
1710 | */ | |
1711 | mmc_select_powerclass(card); | |
1712 | ||
52d0974e SJ |
1713 | /* |
1714 | * Enable HPI feature (if supported) | |
1715 | */ | |
1716 | if (card->ext_csd.hpi) { | |
1717 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1718 | EXT_CSD_HPI_MGMT, 1, | |
1719 | card->ext_csd.generic_cmd6_time); | |
1720 | if (err && err != -EBADMSG) | |
1721 | goto free_card; | |
1722 | if (err) { | |
6606110d JP |
1723 | pr_warn("%s: Enabling HPI failed\n", |
1724 | mmc_hostname(card->host)); | |
52d0974e SJ |
1725 | err = 0; |
1726 | } else | |
1727 | card->ext_csd.hpi_en = 1; | |
1728 | } | |
1729 | ||
881d1c25 SJ |
1730 | /* |
1731 | * If cache size is higher than 0, this indicates | |
1732 | * the existence of cache and it can be turned on. | |
1733 | */ | |
5320226a P |
1734 | if (!mmc_card_broken_hpi(card) && |
1735 | card->ext_csd.cache_size > 0) { | |
881d1c25 | 1736 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
8bc0678b SJ |
1737 | EXT_CSD_CACHE_CTRL, 1, |
1738 | card->ext_csd.generic_cmd6_time); | |
881d1c25 SJ |
1739 | if (err && err != -EBADMSG) |
1740 | goto free_card; | |
1741 | ||
1742 | /* | |
1743 | * Only if no error, cache is turned on successfully. | |
1744 | */ | |
8bc0678b | 1745 | if (err) { |
6606110d JP |
1746 | pr_warn("%s: Cache is supported, but failed to turn on (%d)\n", |
1747 | mmc_hostname(card->host), err); | |
8bc0678b SJ |
1748 | card->ext_csd.cache_ctrl = 0; |
1749 | err = 0; | |
1750 | } else { | |
1751 | card->ext_csd.cache_ctrl = 1; | |
1752 | } | |
881d1c25 SJ |
1753 | } |
1754 | ||
abd9ac14 SJ |
1755 | /* |
1756 | * The mandatory minimum values are defined for packed command. | |
1757 | * read: 5, write: 3 | |
1758 | */ | |
1759 | if (card->ext_csd.max_packed_writes >= 3 && | |
1760 | card->ext_csd.max_packed_reads >= 5 && | |
1761 | host->caps2 & MMC_CAP2_PACKED_CMD) { | |
1762 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1763 | EXT_CSD_EXP_EVENTS_CTRL, | |
1764 | EXT_CSD_PACKED_EVENT_EN, | |
1765 | card->ext_csd.generic_cmd6_time); | |
1766 | if (err && err != -EBADMSG) | |
1767 | goto free_card; | |
1768 | if (err) { | |
1769 | pr_warn("%s: Enabling packed event failed\n", | |
1770 | mmc_hostname(card->host)); | |
1771 | card->ext_csd.packed_event_en = 0; | |
1772 | err = 0; | |
1773 | } else { | |
1774 | card->ext_csd.packed_event_en = 1; | |
1775 | } | |
1776 | } | |
1777 | ||
6abaa0c9 PO |
1778 | if (!oldcard) |
1779 | host->card = card; | |
1780 | ||
17b0429d | 1781 | return 0; |
6abaa0c9 PO |
1782 | |
1783 | free_card: | |
1784 | if (!oldcard) | |
1785 | mmc_remove_card(card); | |
1786 | err: | |
adf66a0d | 1787 | return err; |
6abaa0c9 PO |
1788 | } |
1789 | ||
07a68216 UH |
1790 | static int mmc_can_sleep(struct mmc_card *card) |
1791 | { | |
1792 | return (card && card->ext_csd.rev >= 3); | |
1793 | } | |
1794 | ||
1795 | static int mmc_sleep(struct mmc_host *host) | |
1796 | { | |
1797 | struct mmc_command cmd = {0}; | |
1798 | struct mmc_card *card = host->card; | |
cb962e04 | 1799 | unsigned int timeout_ms = DIV_ROUND_UP(card->ext_csd.sa_timeout, 10000); |
07a68216 UH |
1800 | int err; |
1801 | ||
436f8daa AH |
1802 | /* Re-tuning can't be done once the card is deselected */ |
1803 | mmc_retune_hold(host); | |
1804 | ||
07a68216 UH |
1805 | err = mmc_deselect_cards(host); |
1806 | if (err) | |
436f8daa | 1807 | goto out_release; |
07a68216 UH |
1808 | |
1809 | cmd.opcode = MMC_SLEEP_AWAKE; | |
1810 | cmd.arg = card->rca << 16; | |
1811 | cmd.arg |= 1 << 15; | |
1812 | ||
cb962e04 UH |
1813 | /* |
1814 | * If the max_busy_timeout of the host is specified, validate it against | |
1815 | * the sleep cmd timeout. A failure means we need to prevent the host | |
1816 | * from doing hw busy detection, which is done by converting to a R1 | |
1817 | * response instead of a R1B. | |
1818 | */ | |
1819 | if (host->max_busy_timeout && (timeout_ms > host->max_busy_timeout)) { | |
1820 | cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; | |
1821 | } else { | |
1822 | cmd.flags = MMC_RSP_R1B | MMC_CMD_AC; | |
1823 | cmd.busy_timeout = timeout_ms; | |
1824 | } | |
1825 | ||
07a68216 UH |
1826 | err = mmc_wait_for_cmd(host, &cmd, 0); |
1827 | if (err) | |
436f8daa | 1828 | goto out_release; |
07a68216 UH |
1829 | |
1830 | /* | |
1831 | * If the host does not wait while the card signals busy, then we will | |
1832 | * will have to wait the sleep/awake timeout. Note, we cannot use the | |
1833 | * SEND_STATUS command to poll the status because that command (and most | |
1834 | * others) is invalid while the card sleeps. | |
1835 | */ | |
cb962e04 UH |
1836 | if (!cmd.busy_timeout || !(host->caps & MMC_CAP_WAIT_WHILE_BUSY)) |
1837 | mmc_delay(timeout_ms); | |
07a68216 | 1838 | |
436f8daa AH |
1839 | out_release: |
1840 | mmc_retune_release(host); | |
07a68216 UH |
1841 | return err; |
1842 | } | |
1843 | ||
e6c08586 UH |
1844 | static int mmc_can_poweroff_notify(const struct mmc_card *card) |
1845 | { | |
1846 | return card && | |
1847 | mmc_card_mmc(card) && | |
1848 | (card->ext_csd.power_off_notification == EXT_CSD_POWER_ON); | |
1849 | } | |
1850 | ||
1851 | static int mmc_poweroff_notify(struct mmc_card *card, unsigned int notify_type) | |
1852 | { | |
1853 | unsigned int timeout = card->ext_csd.generic_cmd6_time; | |
1854 | int err; | |
1855 | ||
1856 | /* Use EXT_CSD_POWER_OFF_SHORT as default notification type. */ | |
1857 | if (notify_type == EXT_CSD_POWER_OFF_LONG) | |
1858 | timeout = card->ext_csd.power_off_longtime; | |
1859 | ||
878e200b UH |
1860 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
1861 | EXT_CSD_POWER_OFF_NOTIFICATION, | |
aa33ce3c | 1862 | notify_type, timeout, 0, true, false, false); |
e6c08586 UH |
1863 | if (err) |
1864 | pr_err("%s: Power Off Notification timed out, %u\n", | |
1865 | mmc_hostname(card->host), timeout); | |
1866 | ||
1867 | /* Disable the power off notification after the switch operation. */ | |
1868 | card->ext_csd.power_off_notification = EXT_CSD_NO_POWER_NOTIFICATION; | |
1869 | ||
1870 | return err; | |
1871 | } | |
1872 | ||
6abaa0c9 PO |
1873 | /* |
1874 | * Host is being removed. Free up the current card. | |
1875 | */ | |
1876 | static void mmc_remove(struct mmc_host *host) | |
1877 | { | |
6abaa0c9 PO |
1878 | mmc_remove_card(host->card); |
1879 | host->card = NULL; | |
1880 | } | |
1881 | ||
d3049504 AH |
1882 | /* |
1883 | * Card detection - card is alive. | |
1884 | */ | |
1885 | static int mmc_alive(struct mmc_host *host) | |
1886 | { | |
1887 | return mmc_send_status(host->card, NULL); | |
1888 | } | |
1889 | ||
6abaa0c9 PO |
1890 | /* |
1891 | * Card detection callback from host. | |
1892 | */ | |
1893 | static void mmc_detect(struct mmc_host *host) | |
1894 | { | |
1895 | int err; | |
1896 | ||
e94cfef6 | 1897 | mmc_get_card(host->card); |
6abaa0c9 PO |
1898 | |
1899 | /* | |
1900 | * Just check if our card has been removed. | |
1901 | */ | |
d3049504 | 1902 | err = _mmc_detect_card_removed(host); |
6abaa0c9 | 1903 | |
e94cfef6 | 1904 | mmc_put_card(host->card); |
6abaa0c9 | 1905 | |
17b0429d | 1906 | if (err) { |
4101c16a | 1907 | mmc_remove(host); |
6abaa0c9 PO |
1908 | |
1909 | mmc_claim_host(host); | |
1910 | mmc_detach_bus(host); | |
7f7e4129 | 1911 | mmc_power_off(host); |
6abaa0c9 PO |
1912 | mmc_release_host(host); |
1913 | } | |
1914 | } | |
1915 | ||
03d071fc | 1916 | static int _mmc_suspend(struct mmc_host *host, bool is_suspend) |
6abaa0c9 | 1917 | { |
c3805467 | 1918 | int err = 0; |
03d071fc UH |
1919 | unsigned int notify_type = is_suspend ? EXT_CSD_POWER_OFF_SHORT : |
1920 | EXT_CSD_POWER_OFF_LONG; | |
c3805467 | 1921 | |
6abaa0c9 | 1922 | mmc_claim_host(host); |
881d926d | 1923 | |
9ec775f7 UH |
1924 | if (mmc_card_suspended(host->card)) |
1925 | goto out; | |
1926 | ||
39b9431b UH |
1927 | if (mmc_card_doing_bkops(host->card)) { |
1928 | err = mmc_stop_bkops(host->card); | |
1929 | if (err) | |
1930 | goto out; | |
1931 | } | |
1932 | ||
10e5d965 | 1933 | err = mmc_flush_cache(host->card); |
881d926d ME |
1934 | if (err) |
1935 | goto out; | |
1936 | ||
43235679 | 1937 | if (mmc_can_poweroff_notify(host->card) && |
53275c21 | 1938 | ((host->caps2 & MMC_CAP2_FULL_PWR_CYCLE) || !is_suspend)) |
03d071fc | 1939 | err = mmc_poweroff_notify(host->card, notify_type); |
07a68216 UH |
1940 | else if (mmc_can_sleep(host->card)) |
1941 | err = mmc_sleep(host); | |
e6c08586 | 1942 | else if (!mmc_host_is_spi(host)) |
85e727ed | 1943 | err = mmc_deselect_cards(host); |
95cdfb72 | 1944 | |
9ec775f7 | 1945 | if (!err) { |
74590263 | 1946 | mmc_power_off(host); |
9ec775f7 UH |
1947 | mmc_card_set_suspended(host->card); |
1948 | } | |
881d926d ME |
1949 | out: |
1950 | mmc_release_host(host); | |
c3805467 | 1951 | return err; |
6abaa0c9 | 1952 | } |
7ea239d9 | 1953 | |
03d071fc | 1954 | /* |
0cb403a2 | 1955 | * Suspend callback |
03d071fc UH |
1956 | */ |
1957 | static int mmc_suspend(struct mmc_host *host) | |
1958 | { | |
0cb403a2 UH |
1959 | int err; |
1960 | ||
1961 | err = _mmc_suspend(host, true); | |
1962 | if (!err) { | |
1963 | pm_runtime_disable(&host->card->dev); | |
1964 | pm_runtime_set_suspended(&host->card->dev); | |
1965 | } | |
1966 | ||
1967 | return err; | |
03d071fc UH |
1968 | } |
1969 | ||
6abaa0c9 | 1970 | /* |
6abaa0c9 PO |
1971 | * This function tries to determine if the same card is still present |
1972 | * and, if so, restore all state to it. | |
1973 | */ | |
0cb403a2 | 1974 | static int _mmc_resume(struct mmc_host *host) |
6abaa0c9 | 1975 | { |
9ec775f7 | 1976 | int err = 0; |
6abaa0c9 | 1977 | |
6abaa0c9 | 1978 | mmc_claim_host(host); |
9ec775f7 UH |
1979 | |
1980 | if (!mmc_card_suspended(host->card)) | |
1981 | goto out; | |
1982 | ||
69041150 | 1983 | mmc_power_up(host, host->card->ocr); |
69041150 | 1984 | err = mmc_init_card(host, host->card->ocr, host->card); |
9ec775f7 | 1985 | mmc_card_clr_suspended(host->card); |
2986d0bf | 1986 | |
9ec775f7 UH |
1987 | out: |
1988 | mmc_release_host(host); | |
95cdfb72 | 1989 | return err; |
6abaa0c9 PO |
1990 | } |
1991 | ||
9ec775f7 UH |
1992 | /* |
1993 | * Shutdown callback | |
1994 | */ | |
1995 | static int mmc_shutdown(struct mmc_host *host) | |
1996 | { | |
1997 | int err = 0; | |
1998 | ||
1999 | /* | |
2000 | * In a specific case for poweroff notify, we need to resume the card | |
2001 | * before we can shutdown it properly. | |
2002 | */ | |
2003 | if (mmc_can_poweroff_notify(host->card) && | |
2004 | !(host->caps2 & MMC_CAP2_FULL_PWR_CYCLE)) | |
0cb403a2 | 2005 | err = _mmc_resume(host); |
9ec775f7 UH |
2006 | |
2007 | if (!err) | |
2008 | err = _mmc_suspend(host, false); | |
2009 | ||
2010 | return err; | |
2011 | } | |
c4d770d7 | 2012 | |
0cb403a2 UH |
2013 | /* |
2014 | * Callback for resume. | |
2015 | */ | |
2016 | static int mmc_resume(struct mmc_host *host) | |
2017 | { | |
0cb403a2 | 2018 | pm_runtime_enable(&host->card->dev); |
c29536e8 | 2019 | return 0; |
0cb403a2 UH |
2020 | } |
2021 | ||
c4d770d7 UH |
2022 | /* |
2023 | * Callback for runtime_suspend. | |
2024 | */ | |
2025 | static int mmc_runtime_suspend(struct mmc_host *host) | |
2026 | { | |
2027 | int err; | |
2028 | ||
2029 | if (!(host->caps & MMC_CAP_AGGRESSIVE_PM)) | |
2030 | return 0; | |
2031 | ||
0cb403a2 | 2032 | err = _mmc_suspend(host, true); |
0cc81a8c | 2033 | if (err) |
f42cf8d6 | 2034 | pr_err("%s: error %d doing aggressive suspend\n", |
c4d770d7 | 2035 | mmc_hostname(host), err); |
c4d770d7 | 2036 | |
c4d770d7 UH |
2037 | return err; |
2038 | } | |
2039 | ||
2040 | /* | |
2041 | * Callback for runtime_resume. | |
2042 | */ | |
2043 | static int mmc_runtime_resume(struct mmc_host *host) | |
2044 | { | |
2045 | int err; | |
2046 | ||
0cb403a2 | 2047 | err = _mmc_resume(host); |
520322d9 | 2048 | if (err && err != -ENOMEDIUM) |
c29536e8 | 2049 | pr_err("%s: error %d doing runtime resume\n", |
c4d770d7 UH |
2050 | mmc_hostname(host), err); |
2051 | ||
c4d770d7 UH |
2052 | return 0; |
2053 | } | |
2054 | ||
f855a371 JR |
2055 | int mmc_can_reset(struct mmc_card *card) |
2056 | { | |
2057 | u8 rst_n_function; | |
2058 | ||
2059 | rst_n_function = card->ext_csd.rst_n_function; | |
2060 | if ((rst_n_function & EXT_CSD_RST_N_EN_MASK) != EXT_CSD_RST_N_ENABLED) | |
2061 | return 0; | |
2062 | return 1; | |
2063 | } | |
2064 | EXPORT_SYMBOL(mmc_can_reset); | |
2065 | ||
2066 | static int mmc_reset(struct mmc_host *host) | |
2067 | { | |
2068 | struct mmc_card *card = host->card; | |
f855a371 | 2069 | |
437db4c6 AH |
2070 | /* |
2071 | * In the case of recovery, we can't expect flushing the cache to work | |
2072 | * always, but we have a go and ignore errors. | |
2073 | */ | |
2074 | mmc_flush_cache(host->card); | |
2075 | ||
4e6c7178 GG |
2076 | if ((host->caps & MMC_CAP_HW_RESET) && host->ops->hw_reset && |
2077 | mmc_can_reset(card)) { | |
2078 | /* If the card accept RST_n signal, send it. */ | |
2079 | mmc_set_clock(host, host->f_init); | |
2080 | host->ops->hw_reset(host); | |
2081 | /* Set initial state and call mmc_set_ios */ | |
2082 | mmc_set_initial_state(host); | |
2083 | } else { | |
2084 | /* Do a brute force power cycle */ | |
2085 | mmc_power_cycle(host, card->ocr); | |
2086 | } | |
364549dd | 2087 | return mmc_init_card(host, card->ocr, card); |
f855a371 JR |
2088 | } |
2089 | ||
6abaa0c9 PO |
2090 | static const struct mmc_bus_ops mmc_ops = { |
2091 | .remove = mmc_remove, | |
2092 | .detect = mmc_detect, | |
2093 | .suspend = mmc_suspend, | |
2094 | .resume = mmc_resume, | |
c4d770d7 UH |
2095 | .runtime_suspend = mmc_runtime_suspend, |
2096 | .runtime_resume = mmc_runtime_resume, | |
d3049504 | 2097 | .alive = mmc_alive, |
486fdbbc | 2098 | .shutdown = mmc_shutdown, |
f855a371 | 2099 | .reset = mmc_reset, |
6abaa0c9 PO |
2100 | }; |
2101 | ||
2102 | /* | |
2103 | * Starting point for MMC card init. | |
2104 | */ | |
807e8e40 | 2105 | int mmc_attach_mmc(struct mmc_host *host) |
6abaa0c9 PO |
2106 | { |
2107 | int err; | |
69041150 | 2108 | u32 ocr, rocr; |
6abaa0c9 | 2109 | |
d84075c8 | 2110 | WARN_ON(!host->claimed); |
6abaa0c9 | 2111 | |
44669034 SNX |
2112 | /* Set correct bus mode for MMC before attempting attach */ |
2113 | if (!mmc_host_is_spi(host)) | |
2114 | mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); | |
2115 | ||
807e8e40 AR |
2116 | err = mmc_send_op_cond(host, 0, &ocr); |
2117 | if (err) | |
2118 | return err; | |
2119 | ||
2501c917 | 2120 | mmc_attach_bus(host, &mmc_ops); |
8f230f45 TI |
2121 | if (host->ocr_avail_mmc) |
2122 | host->ocr_avail = host->ocr_avail_mmc; | |
6abaa0c9 | 2123 | |
af517150 DB |
2124 | /* |
2125 | * We need to get OCR a different way for SPI. | |
2126 | */ | |
2127 | if (mmc_host_is_spi(host)) { | |
2128 | err = mmc_spi_read_ocr(host, 1, &ocr); | |
2129 | if (err) | |
2130 | goto err; | |
2131 | } | |
2132 | ||
69041150 | 2133 | rocr = mmc_select_voltage(host, ocr); |
6abaa0c9 PO |
2134 | |
2135 | /* | |
2136 | * Can we support the voltage of the card? | |
2137 | */ | |
69041150 | 2138 | if (!rocr) { |
109b5bed | 2139 | err = -EINVAL; |
6abaa0c9 | 2140 | goto err; |
109b5bed | 2141 | } |
6abaa0c9 PO |
2142 | |
2143 | /* | |
2144 | * Detect and init the card. | |
2145 | */ | |
69041150 | 2146 | err = mmc_init_card(host, rocr, NULL); |
17b0429d | 2147 | if (err) |
6abaa0c9 PO |
2148 | goto err; |
2149 | ||
2150 | mmc_release_host(host); | |
4101c16a | 2151 | err = mmc_add_card(host->card); |
7ea239d9 | 2152 | if (err) |
2986d0bf | 2153 | goto remove_card; |
7ea239d9 | 2154 | |
2860d060 | 2155 | mmc_claim_host(host); |
7ea239d9 PO |
2156 | return 0; |
2157 | ||
2986d0bf | 2158 | remove_card: |
6abaa0c9 | 2159 | mmc_remove_card(host->card); |
2986d0bf | 2160 | mmc_claim_host(host); |
807e8e40 | 2161 | host->card = NULL; |
7ea239d9 PO |
2162 | err: |
2163 | mmc_detach_bus(host); | |
7ea239d9 | 2164 | |
a3c76eb9 | 2165 | pr_err("%s: error %d whilst initialising MMC card\n", |
109b5bed PO |
2166 | mmc_hostname(host), err); |
2167 | ||
adf66a0d | 2168 | return err; |
7ea239d9 | 2169 | } |