Commit | Line | Data |
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9fc51a37 ML |
1 | /* |
2 | * Copyright © 2009 - Maxim Levitsky | |
3 | * Common routines & support for xD format | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License version 2 as | |
7 | * published by the Free Software Foundation. | |
8 | */ | |
9 | #include <linux/kernel.h> | |
10 | #include <linux/mtd/nand.h> | |
a0e5cc58 | 11 | #include <linux/module.h> |
0c4a235c | 12 | #include <linux/sizes.h> |
9fc51a37 ML |
13 | #include "sm_common.h" |
14 | ||
987b913c BB |
15 | static int oob_sm_ooblayout_ecc(struct mtd_info *mtd, int section, |
16 | struct mtd_oob_region *oobregion) | |
17 | { | |
18 | if (section > 1) | |
19 | return -ERANGE; | |
20 | ||
21 | oobregion->length = 3; | |
22 | oobregion->offset = ((section + 1) * 8) - 3; | |
23 | ||
24 | return 0; | |
25 | } | |
26 | ||
27 | static int oob_sm_ooblayout_free(struct mtd_info *mtd, int section, | |
28 | struct mtd_oob_region *oobregion) | |
29 | { | |
30 | switch (section) { | |
31 | case 0: | |
32 | /* reserved */ | |
33 | oobregion->offset = 0; | |
34 | oobregion->length = 4; | |
35 | break; | |
36 | case 1: | |
37 | /* LBA1 */ | |
38 | oobregion->offset = 6; | |
39 | oobregion->length = 2; | |
40 | break; | |
41 | case 2: | |
42 | /* LBA2 */ | |
43 | oobregion->offset = 11; | |
44 | oobregion->length = 2; | |
45 | break; | |
46 | default: | |
47 | return -ERANGE; | |
9fc51a37 | 48 | } |
987b913c BB |
49 | |
50 | return 0; | |
51 | } | |
52 | ||
53 | static const struct mtd_ooblayout_ops oob_sm_ops = { | |
54 | .ecc = oob_sm_ooblayout_ecc, | |
55 | .free = oob_sm_ooblayout_free, | |
9fc51a37 ML |
56 | }; |
57 | ||
58 | /* NOTE: This layout is is not compatabable with SmartMedia, */ | |
59 | /* because the 256 byte devices have page depenent oob layout */ | |
60 | /* However it does preserve the bad block markers */ | |
61 | /* If you use smftl, it will bypass this and work correctly */ | |
62 | /* If you not, then you break SmartMedia compliance anyway */ | |
63 | ||
987b913c BB |
64 | static int oob_sm_small_ooblayout_ecc(struct mtd_info *mtd, int section, |
65 | struct mtd_oob_region *oobregion) | |
66 | { | |
67 | if (section) | |
68 | return -ERANGE; | |
69 | ||
70 | oobregion->length = 3; | |
71 | oobregion->offset = 0; | |
72 | ||
73 | return 0; | |
74 | } | |
75 | ||
76 | static int oob_sm_small_ooblayout_free(struct mtd_info *mtd, int section, | |
77 | struct mtd_oob_region *oobregion) | |
78 | { | |
79 | switch (section) { | |
80 | case 0: | |
81 | /* reserved */ | |
82 | oobregion->offset = 3; | |
83 | oobregion->length = 2; | |
84 | break; | |
85 | case 1: | |
86 | /* LBA1 */ | |
87 | oobregion->offset = 6; | |
88 | oobregion->length = 2; | |
89 | break; | |
90 | default: | |
91 | return -ERANGE; | |
9fc51a37 | 92 | } |
9fc51a37 | 93 | |
987b913c BB |
94 | return 0; |
95 | } | |
96 | ||
97 | static const struct mtd_ooblayout_ops oob_sm_small_ops = { | |
98 | .ecc = oob_sm_small_ooblayout_ecc, | |
99 | .free = oob_sm_small_ooblayout_free, | |
100 | }; | |
9fc51a37 ML |
101 | |
102 | static int sm_block_markbad(struct mtd_info *mtd, loff_t ofs) | |
103 | { | |
104 | struct mtd_oob_ops ops; | |
105 | struct sm_oob oob; | |
5a0edb25 | 106 | int ret; |
9fc51a37 ML |
107 | |
108 | memset(&oob, -1, SM_OOB_SIZE); | |
109 | oob.block_status = 0x0F; | |
110 | ||
111 | /* As long as this function is called on erase block boundaries | |
112 | it will work correctly for 256 byte nand */ | |
0612b9dd | 113 | ops.mode = MTD_OPS_PLACE_OOB; |
9fc51a37 ML |
114 | ops.ooboffs = 0; |
115 | ops.ooblen = mtd->oobsize; | |
116 | ops.oobbuf = (void *)&oob; | |
117 | ops.datbuf = NULL; | |
118 | ||
119 | ||
a2cc5ba0 | 120 | ret = mtd_write_oob(mtd, ofs, &ops); |
9fc51a37 ML |
121 | if (ret < 0 || ops.oobretlen != SM_OOB_SIZE) { |
122 | printk(KERN_NOTICE | |
123 | "sm_common: can't mark sector at %i as bad\n", | |
124 | (int)ofs); | |
5a0edb25 BN |
125 | return -EIO; |
126 | } | |
9fc51a37 | 127 | |
5a0edb25 | 128 | return 0; |
9fc51a37 ML |
129 | } |
130 | ||
2764fb42 | 131 | static struct nand_flash_dev nand_smartmedia_flash_ids[] = { |
0c4a235c AB |
132 | LEGACY_ID_NAND("SmartMedia 2MiB 3,3V ROM", 0x5d, 2, SZ_8K, NAND_ROM), |
133 | LEGACY_ID_NAND("SmartMedia 4MiB 3,3V", 0xe3, 4, SZ_8K, 0), | |
134 | LEGACY_ID_NAND("SmartMedia 4MiB 3,3/5V", 0xe5, 4, SZ_8K, 0), | |
135 | LEGACY_ID_NAND("SmartMedia 4MiB 5V", 0x6b, 4, SZ_8K, 0), | |
136 | LEGACY_ID_NAND("SmartMedia 4MiB 3,3V ROM", 0xd5, 4, SZ_8K, NAND_ROM), | |
137 | LEGACY_ID_NAND("SmartMedia 8MiB 3,3V", 0xe6, 8, SZ_8K, 0), | |
138 | LEGACY_ID_NAND("SmartMedia 8MiB 3,3V ROM", 0xd6, 8, SZ_8K, NAND_ROM), | |
139 | LEGACY_ID_NAND("SmartMedia 16MiB 3,3V", 0x73, 16, SZ_16K, 0), | |
140 | LEGACY_ID_NAND("SmartMedia 16MiB 3,3V ROM", 0x57, 16, SZ_16K, NAND_ROM), | |
141 | LEGACY_ID_NAND("SmartMedia 32MiB 3,3V", 0x75, 32, SZ_16K, 0), | |
142 | LEGACY_ID_NAND("SmartMedia 32MiB 3,3V ROM", 0x58, 32, SZ_16K, NAND_ROM), | |
143 | LEGACY_ID_NAND("SmartMedia 64MiB 3,3V", 0x76, 64, SZ_16K, 0), | |
144 | LEGACY_ID_NAND("SmartMedia 64MiB 3,3V ROM", 0xd9, 64, SZ_16K, NAND_ROM), | |
145 | LEGACY_ID_NAND("SmartMedia 128MiB 3,3V", 0x79, 128, SZ_16K, 0), | |
146 | LEGACY_ID_NAND("SmartMedia 128MiB 3,3V ROM", 0xda, 128, SZ_16K, NAND_ROM), | |
147 | LEGACY_ID_NAND("SmartMedia 256MiB 3, 3V", 0x71, 256, SZ_16K, 0), | |
148 | LEGACY_ID_NAND("SmartMedia 256MiB 3,3V ROM", 0x5b, 256, SZ_16K, NAND_ROM), | |
8dbfae1e | 149 | {NULL} |
c3611570 | 150 | }; |
2764fb42 | 151 | |
c3611570 | 152 | static struct nand_flash_dev nand_xd_flash_ids[] = { |
0c4a235c AB |
153 | LEGACY_ID_NAND("xD 16MiB 3,3V", 0x73, 16, SZ_16K, 0), |
154 | LEGACY_ID_NAND("xD 32MiB 3,3V", 0x75, 32, SZ_16K, 0), | |
155 | LEGACY_ID_NAND("xD 64MiB 3,3V", 0x76, 64, SZ_16K, 0), | |
156 | LEGACY_ID_NAND("xD 128MiB 3,3V", 0x79, 128, SZ_16K, 0), | |
157 | LEGACY_ID_NAND("xD 256MiB 3,3V", 0x71, 256, SZ_16K, NAND_BROKEN_XD), | |
158 | LEGACY_ID_NAND("xD 512MiB 3,3V", 0xdc, 512, SZ_16K, NAND_BROKEN_XD), | |
159 | LEGACY_ID_NAND("xD 1GiB 3,3V", 0xd3, 1024, SZ_16K, NAND_BROKEN_XD), | |
160 | LEGACY_ID_NAND("xD 2GiB 3,3V", 0xd5, 2048, SZ_16K, NAND_BROKEN_XD), | |
8dbfae1e | 161 | {NULL} |
2764fb42 DW |
162 | }; |
163 | ||
c3611570 | 164 | int sm_register_device(struct mtd_info *mtd, int smartmedia) |
9fc51a37 | 165 | { |
4bd4ebcc | 166 | struct nand_chip *chip = mtd_to_nand(mtd); |
9fc51a37 ML |
167 | int ret; |
168 | ||
2764fb42 | 169 | chip->options |= NAND_SKIP_BBTSCAN; |
9fc51a37 ML |
170 | |
171 | /* Scan for card properties */ | |
c3611570 ML |
172 | ret = nand_scan_ident(mtd, 1, smartmedia ? |
173 | nand_smartmedia_flash_ids : nand_xd_flash_ids); | |
9fc51a37 ML |
174 | |
175 | if (ret) | |
176 | return ret; | |
177 | ||
25985edc | 178 | /* Bad block marker position */ |
9fc51a37 ML |
179 | chip->badblockpos = 0x05; |
180 | chip->badblockbits = 7; | |
181 | chip->block_markbad = sm_block_markbad; | |
182 | ||
183 | /* ECC layout */ | |
184 | if (mtd->writesize == SM_SECTOR_SIZE) | |
987b913c | 185 | mtd_set_ooblayout(mtd, &oob_sm_ops); |
9fc51a37 | 186 | else if (mtd->writesize == SM_SMALL_PAGE) |
987b913c | 187 | mtd_set_ooblayout(mtd, &oob_sm_small_ops); |
9fc51a37 ML |
188 | else |
189 | return -ENODEV; | |
190 | ||
191 | ret = nand_scan_tail(mtd); | |
192 | ||
193 | if (ret) | |
194 | return ret; | |
195 | ||
ee0e87b1 | 196 | return mtd_device_register(mtd, NULL, 0); |
9fc51a37 ML |
197 | } |
198 | EXPORT_SYMBOL_GPL(sm_register_device); | |
199 | ||
200 | MODULE_LICENSE("GPL"); | |
201 | MODULE_AUTHOR("Maxim Levitsky <maximlevitsky@gmail.com>"); | |
202 | MODULE_DESCRIPTION("Common SmartMedia/xD functions"); |