1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Copyright (c) 2018 exceet electronics GmbH
4 * Copyright (c) 2018 Kontron Electronics GmbH
5 *
6 * Author: Frieder Schrempf <frieder.schrempf@kontron.de>
7 */
8
9 #ifndef __UBOOT__
10 #include <malloc.h>
11 #include <linux/device.h>
12 #include <linux/kernel.h>
13 #endif
14 #include <linux/mtd/spinand.h>
15
16 #define SPINAND_MFR_TOSHIBA 0x98
17 #define TOSH_STATUS_ECC_HAS_BITFLIPS_T (3 << 4)
18
19 static SPINAND_OP_VARIANTS(read_cache_variants,
20 SPINAND_PAGE_READ_FROM_CACHE_X4_OP(0, 1, NULL, 0),
21 SPINAND_PAGE_READ_FROM_CACHE_X2_OP(0, 1, NULL, 0),
22 SPINAND_PAGE_READ_FROM_CACHE_OP(true, 0, 1, NULL, 0),
23 SPINAND_PAGE_READ_FROM_CACHE_OP(false, 0, 1, NULL, 0));
24
25 static SPINAND_OP_VARIANTS(write_cache_variants,
26 SPINAND_PROG_LOAD(true, 0, NULL, 0));
27
28 static SPINAND_OP_VARIANTS(update_cache_variants,
29 SPINAND_PROG_LOAD(false, 0, NULL, 0));
30
tc58cxgxsx_ooblayout_ecc(struct mtd_info * mtd,int section,struct mtd_oob_region * region)31 static int tc58cxgxsx_ooblayout_ecc(struct mtd_info *mtd, int section,
32 struct mtd_oob_region *region)
33 {
34 if (section > 0)
35 return -ERANGE;
36
37 region->offset = mtd->oobsize / 2;
38 region->length = mtd->oobsize / 2;
39
40 return 0;
41 }
42
tc58cxgxsx_ooblayout_free(struct mtd_info * mtd,int section,struct mtd_oob_region * region)43 static int tc58cxgxsx_ooblayout_free(struct mtd_info *mtd, int section,
44 struct mtd_oob_region *region)
45 {
46 if (section > 0)
47 return -ERANGE;
48
49 /* 2 bytes reserved for BBM */
50 region->offset = 2;
51 region->length = (mtd->oobsize / 2) - 2;
52
53 return 0;
54 }
55
56 static const struct mtd_ooblayout_ops tc58cxgxsx_ooblayout = {
57 .ecc = tc58cxgxsx_ooblayout_ecc,
58 .rfree = tc58cxgxsx_ooblayout_free,
59 };
60
tc58cxgxsx_ecc_get_status(struct spinand_device * spinand,u8 status)61 static int tc58cxgxsx_ecc_get_status(struct spinand_device *spinand,
62 u8 status)
63 {
64 struct nand_device *nand = spinand_to_nand(spinand);
65 u8 mbf = 0;
66 struct spi_mem_op op = SPINAND_GET_FEATURE_OP(0x30, &mbf);
67
68 switch (status & STATUS_ECC_MASK) {
69 case STATUS_ECC_NO_BITFLIPS:
70 return 0;
71
72 case STATUS_ECC_UNCOR_ERROR:
73 return -EBADMSG;
74
75 case STATUS_ECC_HAS_BITFLIPS:
76 case TOSH_STATUS_ECC_HAS_BITFLIPS_T:
77 /*
78 * Let's try to retrieve the real maximum number of bitflips
79 * in order to avoid forcing the wear-leveling layer to move
80 * data around if it's not necessary.
81 */
82 if (spi_mem_exec_op(spinand->slave, &op))
83 return nand->eccreq.strength;
84
85 mbf >>= 4;
86
87 if (WARN_ON(mbf > nand->eccreq.strength || !mbf))
88 return nand->eccreq.strength;
89
90 return mbf;
91
92 default:
93 break;
94 }
95
96 return -EINVAL;
97 }
98
99 static const struct spinand_info toshiba_spinand_table[] = {
100 /* 3.3V 1Gb */
101 SPINAND_INFO("TC58CVG0S3",
102 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xC2),
103 NAND_MEMORG(1, 2048, 128, 64, 1024, 1, 1, 1),
104 NAND_ECCREQ(8, 512),
105 SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
106 &write_cache_variants,
107 &update_cache_variants),
108 0,
109 SPINAND_ECCINFO(&tc58cxgxsx_ooblayout,
110 tc58cxgxsx_ecc_get_status)),
111 /* 3.3V 2Gb */
112 SPINAND_INFO("TC58CVG1S3",
113 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xCB),
114 NAND_MEMORG(1, 2048, 128, 64, 2048, 1, 1, 1),
115 NAND_ECCREQ(8, 512),
116 SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
117 &write_cache_variants,
118 &update_cache_variants),
119 0,
120 SPINAND_ECCINFO(&tc58cxgxsx_ooblayout,
121 tc58cxgxsx_ecc_get_status)),
122 /* 3.3V 4Gb */
123 SPINAND_INFO("TC58CVG2S0",
124 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xCD),
125 NAND_MEMORG(1, 4096, 256, 64, 2048, 1, 1, 1),
126 NAND_ECCREQ(8, 512),
127 SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
128 &write_cache_variants,
129 &update_cache_variants),
130 0,
131 SPINAND_ECCINFO(&tc58cxgxsx_ooblayout,
132 tc58cxgxsx_ecc_get_status)),
133 /* 1.8V 1Gb */
134 SPINAND_INFO("TC58CYG0S3",
135 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xB2),
136 NAND_MEMORG(1, 2048, 128, 64, 1024, 1, 1, 1),
137 NAND_ECCREQ(8, 512),
138 SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
139 &write_cache_variants,
140 &update_cache_variants),
141 0,
142 SPINAND_ECCINFO(&tc58cxgxsx_ooblayout,
143 tc58cxgxsx_ecc_get_status)),
144 /* 1.8V 2Gb */
145 SPINAND_INFO("TC58CYG1S3",
146 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xBB),
147 NAND_MEMORG(1, 2048, 128, 64, 2048, 1, 1, 1),
148 NAND_ECCREQ(8, 512),
149 SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
150 &write_cache_variants,
151 &update_cache_variants),
152 0,
153 SPINAND_ECCINFO(&tc58cxgxsx_ooblayout,
154 tc58cxgxsx_ecc_get_status)),
155 /* 1.8V 4Gb */
156 SPINAND_INFO("TC58CYG2S0",
157 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xBD),
158 NAND_MEMORG(1, 4096, 256, 64, 2048, 1, 1, 1),
159 NAND_ECCREQ(8, 512),
160 SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
161 &write_cache_variants,
162 &update_cache_variants),
163 0,
164 SPINAND_ECCINFO(&tc58cxgxsx_ooblayout,
165 tc58cxgxsx_ecc_get_status)),
166 /* 3.3V 1Gb */
167 SPINAND_INFO("TC58CVG0S3HRAIJ",
168 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xE2),
169 NAND_MEMORG(1, 2048, 128, 64, 1024, 1, 1, 1),
170 NAND_ECCREQ(8, 512),
171 SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
172 &write_cache_variants,
173 &update_cache_variants),
174 0,
175 SPINAND_ECCINFO(&tc58cxgxsx_ooblayout,
176 tc58cxgxsx_ecc_get_status)),
177 /* 3.3V 2Gb */
178 SPINAND_INFO("TC58CVG1S3HRAIJ",
179 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xEB),
180 NAND_MEMORG(1, 2048, 128, 64, 2048, 1, 1, 1),
181 NAND_ECCREQ(8, 512),
182 SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
183 &write_cache_variants,
184 &update_cache_variants),
185 0,
186 SPINAND_ECCINFO(&tc58cxgxsx_ooblayout,
187 tc58cxgxsx_ecc_get_status)),
188 /* 3.3V 4Gb */
189 SPINAND_INFO("TC58CVG2S0HRAIJ",
190 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xED),
191 NAND_MEMORG(1, 4096, 128, 64, 2048, 1, 1, 1),
192 NAND_ECCREQ(8, 512),
193 SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
194 &write_cache_variants,
195 &update_cache_variants),
196 0,
197 SPINAND_ECCINFO(&tc58cxgxsx_ooblayout,
198 tc58cxgxsx_ecc_get_status)),
199 };
200
201 static const struct spinand_manufacturer_ops toshiba_spinand_manuf_ops = {
202 };
203
204 const struct spinand_manufacturer toshiba_spinand_manufacturer = {
205 .id = SPINAND_MFR_TOSHIBA,
206 .name = "Toshiba",
207 .chips = toshiba_spinand_table,
208 .nchips = ARRAY_SIZE(toshiba_spinand_table),
209 .ops = &toshiba_spinand_manuf_ops,
210 };
211