1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Copyright (c) 2020 Rockchip Electronics Co., Ltd
4 *
5 * Authors:
6 * Dingqiang Lin <jon.lin@rock-chips.com>
7 */
8
9 #ifndef __UBOOT__
10 #include <linux/device.h>
11 #include <linux/kernel.h>
12 #endif
13 #include <linux/mtd/spinand.h>
14
15 #define SPINAND_MFR_DOSILICON 0xE5
16
17 #define DOSICON_STATUS_ECC_MASK GENMASK(6, 4)
18 #define DOSICON_STATUS_ECC_NO_BITFLIPS (0 << 4)
19 #define DOSICON_STATUS_ECC_1TO3_BITFLIPS (1 << 4)
20 #define DOSICON_STATUS_ECC_4TO6_BITFLIPS (3 << 4)
21 #define DOSICON_STATUS_ECC_7TO8_BITFLIPS (5 << 4)
22
23 static SPINAND_OP_VARIANTS(read_cache_variants,
24 SPINAND_PAGE_READ_FROM_CACHE_QUADIO_OP(0, 2, NULL, 0),
25 SPINAND_PAGE_READ_FROM_CACHE_X4_OP(0, 1, NULL, 0),
26 SPINAND_PAGE_READ_FROM_CACHE_DUALIO_OP(0, 1, NULL, 0),
27 SPINAND_PAGE_READ_FROM_CACHE_X2_OP(0, 1, NULL, 0),
28 SPINAND_PAGE_READ_FROM_CACHE_OP(true, 0, 1, NULL, 0),
29 SPINAND_PAGE_READ_FROM_CACHE_OP(false, 0, 1, NULL, 0));
30
31 static SPINAND_OP_VARIANTS(write_cache_variants,
32 SPINAND_PROG_LOAD_X4(true, 0, NULL, 0),
33 SPINAND_PROG_LOAD(true, 0, NULL, 0));
34
35 static SPINAND_OP_VARIANTS(update_cache_variants,
36 SPINAND_PROG_LOAD_X4(false, 0, NULL, 0),
37 SPINAND_PROG_LOAD(false, 0, NULL, 0));
38
ds35xxga_ooblayout_ecc(struct mtd_info * mtd,int section,struct mtd_oob_region * region)39 static int ds35xxga_ooblayout_ecc(struct mtd_info *mtd, int section,
40 struct mtd_oob_region *region)
41 {
42 if (section > 3)
43 return -ERANGE;
44
45 region->offset = (16 * section) + 8;
46 region->length = 8;
47
48 return 0;
49 }
50
ds35xxga_ooblayout_free(struct mtd_info * mtd,int section,struct mtd_oob_region * region)51 static int ds35xxga_ooblayout_free(struct mtd_info *mtd, int section,
52 struct mtd_oob_region *region)
53 {
54 if (section > 3)
55 return -ERANGE;
56
57 region->offset = (16 * section) + 2;
58 region->length = 6;
59
60 return 0;
61 }
62
63 static const struct mtd_ooblayout_ops ds35xxga_ooblayout = {
64 .ecc = ds35xxga_ooblayout_ecc,
65 .rfree = ds35xxga_ooblayout_free,
66 };
67
ds35xxgb_ooblayout_ecc(struct mtd_info * mtd,int section,struct mtd_oob_region * region)68 static int ds35xxgb_ooblayout_ecc(struct mtd_info *mtd, int section,
69 struct mtd_oob_region *region)
70 {
71 if (section)
72 return -ERANGE;
73
74 region->offset = 64;
75 region->length = 64;
76
77 return 0;
78 }
79
ds35xxgb_ooblayout_free(struct mtd_info * mtd,int section,struct mtd_oob_region * region)80 static int ds35xxgb_ooblayout_free(struct mtd_info *mtd, int section,
81 struct mtd_oob_region *region)
82 {
83 if (section)
84 return -ERANGE;
85
86 /* Reserve 1 bytes for the BBM. */
87 region->offset = 1;
88 region->length = 63;
89
90 return 0;
91 }
92
93 static const struct mtd_ooblayout_ops ds35xxgb_ooblayout = {
94 .ecc = ds35xxgb_ooblayout_ecc,
95 .rfree = ds35xxgb_ooblayout_free,
96 };
97
ds35xxgb_ecc_get_status(struct spinand_device * spinand,u8 status)98 static int ds35xxgb_ecc_get_status(struct spinand_device *spinand,
99 u8 status)
100 {
101 switch (status & DOSICON_STATUS_ECC_MASK) {
102 case STATUS_ECC_NO_BITFLIPS:
103 return 0;
104
105 case STATUS_ECC_UNCOR_ERROR:
106 return -EBADMSG;
107
108 case DOSICON_STATUS_ECC_1TO3_BITFLIPS:
109 return 3;
110
111 case DOSICON_STATUS_ECC_4TO6_BITFLIPS:
112 return 6;
113
114 case DOSICON_STATUS_ECC_7TO8_BITFLIPS:
115 return 8;
116
117 default:
118 break;
119 }
120
121 return -EINVAL;
122 }
123
124 static const struct spinand_info dosilicon_spinand_table[] = {
125 SPINAND_INFO("DS35X1GA",
126 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x71),
127 NAND_MEMORG(1, 2048, 64, 64, 1024, 1, 1, 1),
128 NAND_ECCREQ(4, 512),
129 SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
130 &write_cache_variants,
131 &update_cache_variants),
132 SPINAND_HAS_QE_BIT,
133 SPINAND_ECCINFO(&ds35xxga_ooblayout, NULL)),
134 SPINAND_INFO("DS35Q2GA",
135 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x72),
136 NAND_MEMORG(1, 2048, 64, 64, 2048, 2, 1, 1),
137 NAND_ECCREQ(4, 512),
138 SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
139 &write_cache_variants,
140 &update_cache_variants),
141 SPINAND_HAS_QE_BIT,
142 SPINAND_ECCINFO(&ds35xxga_ooblayout, NULL)),
143 SPINAND_INFO("DS35M1GA",
144 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x21),
145 NAND_MEMORG(1, 2048, 64, 64, 1024, 1, 1, 1),
146 NAND_ECCREQ(4, 512),
147 SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
148 &write_cache_variants,
149 &update_cache_variants),
150 SPINAND_HAS_QE_BIT,
151 SPINAND_ECCINFO(&ds35xxga_ooblayout, NULL)),
152 SPINAND_INFO("DS35M2GA",
153 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x22),
154 NAND_MEMORG(1, 2048, 64, 64, 2048, 2, 1, 1),
155 NAND_ECCREQ(4, 512),
156 SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
157 &write_cache_variants,
158 &update_cache_variants),
159 SPINAND_HAS_QE_BIT,
160 SPINAND_ECCINFO(&ds35xxga_ooblayout, NULL)),
161 SPINAND_INFO("DS35Q2GB",
162 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xF2),
163 NAND_MEMORG(1, 2048, 128, 64, 2048, 2, 1, 1),
164 NAND_ECCREQ(8, 512),
165 SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
166 &write_cache_variants,
167 &update_cache_variants),
168 SPINAND_HAS_QE_BIT,
169 SPINAND_ECCINFO(&ds35xxgb_ooblayout,
170 ds35xxgb_ecc_get_status)),
171 SPINAND_INFO("DS35M1GB",
172 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xA1),
173 NAND_MEMORG(1, 2048, 128, 64, 1024, 1, 1, 1),
174 NAND_ECCREQ(8, 512),
175 SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
176 &write_cache_variants,
177 &update_cache_variants),
178 SPINAND_HAS_QE_BIT,
179 SPINAND_ECCINFO(&ds35xxgb_ooblayout,
180 ds35xxgb_ecc_get_status)),
181 SPINAND_INFO("DS35Q1GB",
182 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xF1),
183 NAND_MEMORG(1, 2048, 128, 64, 1024, 1, 1, 1),
184 NAND_ECCREQ(8, 512),
185 SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
186 &write_cache_variants,
187 &update_cache_variants),
188 SPINAND_HAS_QE_BIT,
189 SPINAND_ECCINFO(&ds35xxgb_ooblayout,
190 ds35xxgb_ecc_get_status)),
191 SPINAND_INFO("DS35Q4GM",
192 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xF4),
193 NAND_MEMORG(1, 2048, 128, 64, 4096, 2, 1, 1),
194 NAND_ECCREQ(8, 512),
195 SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
196 &write_cache_variants,
197 &update_cache_variants),
198 SPINAND_HAS_QE_BIT,
199 SPINAND_ECCINFO(&ds35xxgb_ooblayout,
200 ds35xxgb_ecc_get_status)),
201 SPINAND_INFO("DS35Q12B",
202 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xF5),
203 NAND_MEMORG(1, 2048, 128, 64, 512, 1, 1, 1),
204 NAND_ECCREQ(8, 512),
205 SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
206 &write_cache_variants,
207 &update_cache_variants),
208 SPINAND_HAS_QE_BIT,
209 SPINAND_ECCINFO(&ds35xxgb_ooblayout,
210 ds35xxgb_ecc_get_status)),
211 SPINAND_INFO("DS35M12B",
212 SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xA5),
213 NAND_MEMORG(1, 2048, 128, 64, 512, 1, 1, 1),
214 NAND_ECCREQ(8, 512),
215 SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
216 &write_cache_variants,
217 &update_cache_variants),
218 SPINAND_HAS_QE_BIT,
219 SPINAND_ECCINFO(&ds35xxgb_ooblayout,
220 ds35xxgb_ecc_get_status)),
221 };
222
223 static const struct spinand_manufacturer_ops dosilicon_spinand_manuf_ops = {
224 };
225
226 const struct spinand_manufacturer dosilicon_spinand_manufacturer = {
227 .id = SPINAND_MFR_DOSILICON,
228 .name = "dosilicon",
229 .chips = dosilicon_spinand_table,
230 .nchips = ARRAY_SIZE(dosilicon_spinand_table),
231 .ops = &dosilicon_spinand_manuf_ops,
232 };
233