Commit | Line | Data |
---|---|---|
5c4e6f13 PO |
1 | /* |
2 | * linux/drivers/mmc/sdio_ops.c | |
3 | * | |
4 | * Copyright 2006-2007 Pierre Ossman | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or (at | |
9 | * your option) any later version. | |
10 | */ | |
11 | ||
112c9db9 PO |
12 | #include <linux/scatterlist.h> |
13 | ||
5c4e6f13 | 14 | #include <linux/mmc/host.h> |
b2bcc798 | 15 | #include <linux/mmc/card.h> |
5c4e6f13 PO |
16 | #include <linux/mmc/mmc.h> |
17 | #include <linux/mmc/sdio.h> | |
18 | ||
19 | #include "core.h" | |
e70aa3fa | 20 | #include "sdio_ops.h" |
5c4e6f13 PO |
21 | |
22 | int mmc_send_io_op_cond(struct mmc_host *host, u32 ocr, u32 *rocr) | |
23 | { | |
1278dba1 | 24 | struct mmc_command cmd = {0}; |
5c4e6f13 PO |
25 | int i, err = 0; |
26 | ||
27 | BUG_ON(!host); | |
28 | ||
5c4e6f13 PO |
29 | cmd.opcode = SD_IO_SEND_OP_COND; |
30 | cmd.arg = ocr; | |
af517150 | 31 | cmd.flags = MMC_RSP_SPI_R4 | MMC_RSP_R4 | MMC_CMD_BCR; |
5c4e6f13 PO |
32 | |
33 | for (i = 100; i; i--) { | |
34 | err = mmc_wait_for_cmd(host, &cmd, MMC_CMD_RETRIES); | |
35 | if (err) | |
36 | break; | |
37 | ||
af517150 DB |
38 | /* if we're just probing, do a single pass */ |
39 | if (ocr == 0) | |
5c4e6f13 PO |
40 | break; |
41 | ||
af517150 DB |
42 | /* otherwise wait until reset completes */ |
43 | if (mmc_host_is_spi(host)) { | |
44 | /* | |
45 | * Both R1_SPI_IDLE and MMC_CARD_BUSY indicate | |
46 | * an initialized card under SPI, but some cards | |
47 | * (Marvell's) only behave when looking at this | |
48 | * one. | |
49 | */ | |
50 | if (cmd.resp[1] & MMC_CARD_BUSY) | |
51 | break; | |
52 | } else { | |
53 | if (cmd.resp[0] & MMC_CARD_BUSY) | |
54 | break; | |
55 | } | |
56 | ||
5c4e6f13 PO |
57 | err = -ETIMEDOUT; |
58 | ||
59 | mmc_delay(10); | |
60 | } | |
61 | ||
62 | if (rocr) | |
af517150 | 63 | *rocr = cmd.resp[mmc_host_is_spi(host) ? 1 : 0]; |
5c4e6f13 PO |
64 | |
65 | return err; | |
66 | } | |
67 | ||
516a8242 AH |
68 | static int mmc_io_rw_direct_host(struct mmc_host *host, int write, unsigned fn, |
69 | unsigned addr, u8 in, u8 *out) | |
b2bcc798 | 70 | { |
1278dba1 | 71 | struct mmc_command cmd = {0}; |
b2bcc798 PO |
72 | int err; |
73 | ||
516a8242 | 74 | BUG_ON(!host); |
b2bcc798 PO |
75 | BUG_ON(fn > 7); |
76 | ||
be6f19fc PO |
77 | /* sanity check */ |
78 | if (addr & ~0x1FFFF) | |
79 | return -EINVAL; | |
80 | ||
b2bcc798 PO |
81 | cmd.opcode = SD_IO_RW_DIRECT; |
82 | cmd.arg = write ? 0x80000000 : 0x00000000; | |
83 | cmd.arg |= fn << 28; | |
84 | cmd.arg |= (write && out) ? 0x08000000 : 0x00000000; | |
85 | cmd.arg |= addr << 9; | |
86 | cmd.arg |= in; | |
af517150 | 87 | cmd.flags = MMC_RSP_SPI_R5 | MMC_RSP_R5 | MMC_CMD_AC; |
b2bcc798 | 88 | |
516a8242 | 89 | err = mmc_wait_for_cmd(host, &cmd, 0); |
b2bcc798 PO |
90 | if (err) |
91 | return err; | |
92 | ||
516a8242 | 93 | if (mmc_host_is_spi(host)) { |
af517150 DB |
94 | /* host driver already reported errors */ |
95 | } else { | |
96 | if (cmd.resp[0] & R5_ERROR) | |
97 | return -EIO; | |
98 | if (cmd.resp[0] & R5_FUNCTION_NUMBER) | |
99 | return -EINVAL; | |
100 | if (cmd.resp[0] & R5_OUT_OF_RANGE) | |
101 | return -ERANGE; | |
102 | } | |
b2bcc798 | 103 | |
af517150 | 104 | if (out) { |
516a8242 | 105 | if (mmc_host_is_spi(host)) |
af517150 DB |
106 | *out = (cmd.resp[0] >> 8) & 0xFF; |
107 | else | |
108 | *out = cmd.resp[0] & 0xFF; | |
109 | } | |
b2bcc798 PO |
110 | |
111 | return 0; | |
112 | } | |
113 | ||
516a8242 AH |
114 | int mmc_io_rw_direct(struct mmc_card *card, int write, unsigned fn, |
115 | unsigned addr, u8 in, u8 *out) | |
116 | { | |
117 | BUG_ON(!card); | |
118 | return mmc_io_rw_direct_host(card->host, write, fn, addr, in, out); | |
119 | } | |
120 | ||
112c9db9 | 121 | int mmc_io_rw_extended(struct mmc_card *card, int write, unsigned fn, |
eb659468 | 122 | unsigned addr, int incr_addr, u8 *buf, unsigned blocks, unsigned blksz) |
112c9db9 | 123 | { |
ad5fd972 | 124 | struct mmc_request mrq = {NULL}; |
1278dba1 | 125 | struct mmc_command cmd = {0}; |
a61ad2b4 | 126 | struct mmc_data data = {0}; |
112c9db9 PO |
127 | struct scatterlist sg; |
128 | ||
129 | BUG_ON(!card); | |
130 | BUG_ON(fn > 7); | |
eb659468 DV |
131 | BUG_ON(blocks == 1 && blksz > 512); |
132 | WARN_ON(blocks == 0); | |
133 | WARN_ON(blksz == 0); | |
112c9db9 | 134 | |
be6f19fc PO |
135 | /* sanity check */ |
136 | if (addr & ~0x1FFFF) | |
137 | return -EINVAL; | |
138 | ||
112c9db9 PO |
139 | mrq.cmd = &cmd; |
140 | mrq.data = &data; | |
141 | ||
142 | cmd.opcode = SD_IO_RW_EXTENDED; | |
143 | cmd.arg = write ? 0x80000000 : 0x00000000; | |
144 | cmd.arg |= fn << 28; | |
eb659468 | 145 | cmd.arg |= incr_addr ? 0x04000000 : 0x00000000; |
112c9db9 | 146 | cmd.arg |= addr << 9; |
9a0da648 SNX |
147 | if (blocks == 1 && blksz < 512) |
148 | cmd.arg |= blksz; /* byte mode */ | |
149 | else if (blocks == 1 && blksz == 512 && | |
150 | !(mmc_card_broken_byte_mode_512(card))) | |
151 | cmd.arg |= 0; /* byte mode, 0==512 */ | |
eb659468 DV |
152 | else |
153 | cmd.arg |= 0x08000000 | blocks; /* block mode */ | |
af517150 | 154 | cmd.flags = MMC_RSP_SPI_R5 | MMC_RSP_R5 | MMC_CMD_ADTC; |
112c9db9 | 155 | |
eb659468 DV |
156 | data.blksz = blksz; |
157 | data.blocks = blocks; | |
112c9db9 PO |
158 | data.flags = write ? MMC_DATA_WRITE : MMC_DATA_READ; |
159 | data.sg = &sg; | |
160 | data.sg_len = 1; | |
161 | ||
eb659468 | 162 | sg_init_one(&sg, buf, blksz * blocks); |
112c9db9 PO |
163 | |
164 | mmc_set_data_timeout(&data, card); | |
165 | ||
166 | mmc_wait_for_req(card->host, &mrq); | |
167 | ||
168 | if (cmd.error) | |
169 | return cmd.error; | |
170 | if (data.error) | |
171 | return data.error; | |
172 | ||
af517150 DB |
173 | if (mmc_host_is_spi(card->host)) { |
174 | /* host driver already reported errors */ | |
175 | } else { | |
176 | if (cmd.resp[0] & R5_ERROR) | |
177 | return -EIO; | |
178 | if (cmd.resp[0] & R5_FUNCTION_NUMBER) | |
179 | return -EINVAL; | |
180 | if (cmd.resp[0] & R5_OUT_OF_RANGE) | |
181 | return -ERANGE; | |
182 | } | |
112c9db9 PO |
183 | |
184 | return 0; | |
185 | } | |
186 | ||
516a8242 AH |
187 | int sdio_reset(struct mmc_host *host) |
188 | { | |
189 | int ret; | |
190 | u8 abort; | |
191 | ||
192 | /* SDIO Simplified Specification V2.0, 4.4 Reset for SDIO */ | |
193 | ||
194 | ret = mmc_io_rw_direct_host(host, 0, 0, SDIO_CCCR_ABORT, 0, &abort); | |
195 | if (ret) | |
196 | abort = 0x08; | |
197 | else | |
198 | abort |= 0x08; | |
199 | ||
200 | ret = mmc_io_rw_direct_host(host, 1, 0, SDIO_CCCR_ABORT, abort, NULL); | |
201 | return ret; | |
202 | } | |
203 |