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1da177e4 | 1 | /* |
8f15fd55 | 2 | * $Id: mtd-abi.h,v 1.10 2005/02/09 09:17:42 pavlov Exp $ |
1da177e4 LT |
3 | * |
4 | * Portions of MTD ABI definition which are shared by kernel and user space | |
5 | */ | |
6 | ||
7 | #ifndef __MTD_ABI_H__ | |
8 | #define __MTD_ABI_H__ | |
9 | ||
10 | #ifndef __KERNEL__ /* Urgh. The whole point of splitting this out into | |
11 | separate files was to avoid #ifdef __KERNEL__ */ | |
12 | #define __user | |
13 | #endif | |
14 | ||
15 | struct erase_info_user { | |
16 | uint32_t start; | |
17 | uint32_t length; | |
18 | }; | |
19 | ||
20 | struct mtd_oob_buf { | |
21 | uint32_t start; | |
22 | uint32_t length; | |
23 | unsigned char __user *ptr; | |
24 | }; | |
25 | ||
26 | #define MTD_ABSENT 0 | |
27 | #define MTD_RAM 1 | |
28 | #define MTD_ROM 2 | |
29 | #define MTD_NORFLASH 3 | |
30 | #define MTD_NANDFLASH 4 | |
31 | #define MTD_PEROM 5 | |
8f15fd55 | 32 | #define MTD_DATAFLASH 6 |
1da177e4 LT |
33 | #define MTD_OTHER 14 |
34 | #define MTD_UNKNOWN 15 | |
35 | ||
36 | #define MTD_CLEAR_BITS 1 // Bits can be cleared (flash) | |
37 | #define MTD_SET_BITS 2 // Bits can be set | |
38 | #define MTD_ERASEABLE 4 // Has an erase function | |
39 | #define MTD_WRITEB_WRITEABLE 8 // Direct IO is possible | |
40 | #define MTD_VOLATILE 16 // Set for RAMs | |
41 | #define MTD_XIP 32 // eXecute-In-Place possible | |
42 | #define MTD_OOB 64 // Out-of-band data (NAND flash) | |
43 | #define MTD_ECC 128 // Device capable of automatic ECC | |
44 | #define MTD_NO_VIRTBLOCKS 256 // Virtual blocks not allowed | |
45 | ||
46 | // Some common devices / combinations of capabilities | |
47 | #define MTD_CAP_ROM 0 | |
48 | #define MTD_CAP_RAM (MTD_CLEAR_BITS|MTD_SET_BITS|MTD_WRITEB_WRITEABLE) | |
49 | #define MTD_CAP_NORFLASH (MTD_CLEAR_BITS|MTD_ERASEABLE) | |
50 | #define MTD_CAP_NANDFLASH (MTD_CLEAR_BITS|MTD_ERASEABLE|MTD_OOB) | |
51 | #define MTD_WRITEABLE (MTD_CLEAR_BITS|MTD_SET_BITS) | |
52 | ||
53 | ||
54 | // Types of automatic ECC/Checksum available | |
55 | #define MTD_ECC_NONE 0 // No automatic ECC available | |
56 | #define MTD_ECC_RS_DiskOnChip 1 // Automatic ECC on DiskOnChip | |
57 | #define MTD_ECC_SW 2 // SW ECC for Toshiba & Samsung devices | |
58 | ||
59 | /* ECC byte placement */ | |
60 | #define MTD_NANDECC_OFF 0 // Switch off ECC (Not recommended) | |
61 | #define MTD_NANDECC_PLACE 1 // Use the given placement in the structure (YAFFS1 legacy mode) | |
62 | #define MTD_NANDECC_AUTOPLACE 2 // Use the default placement scheme | |
63 | #define MTD_NANDECC_PLACEONLY 3 // Use the given placement in the structure (Do not store ecc result on read) | |
64 | ||
31f4233b NP |
65 | /* OTP mode selection */ |
66 | #define MTD_OTP_OFF 0 | |
67 | #define MTD_OTP_FACTORY 1 | |
68 | #define MTD_OTP_USER 2 | |
69 | ||
1da177e4 LT |
70 | struct mtd_info_user { |
71 | uint8_t type; | |
72 | uint32_t flags; | |
73 | uint32_t size; // Total size of the MTD | |
74 | uint32_t erasesize; | |
75 | uint32_t oobblock; // Size of OOB blocks (e.g. 512) | |
76 | uint32_t oobsize; // Amount of OOB data per block (e.g. 16) | |
77 | uint32_t ecctype; | |
78 | uint32_t eccsize; | |
79 | }; | |
80 | ||
81 | struct region_info_user { | |
82 | uint32_t offset; /* At which this region starts, | |
83 | * from the beginning of the MTD */ | |
84 | uint32_t erasesize; /* For this region */ | |
85 | uint32_t numblocks; /* Number of blocks in this region */ | |
86 | uint32_t regionindex; | |
87 | }; | |
88 | ||
f77814dd NP |
89 | struct otp_info { |
90 | uint32_t start; | |
91 | uint32_t length; | |
92 | uint32_t locked; | |
93 | }; | |
94 | ||
1da177e4 LT |
95 | #define MEMGETINFO _IOR('M', 1, struct mtd_info_user) |
96 | #define MEMERASE _IOW('M', 2, struct erase_info_user) | |
97 | #define MEMWRITEOOB _IOWR('M', 3, struct mtd_oob_buf) | |
98 | #define MEMREADOOB _IOWR('M', 4, struct mtd_oob_buf) | |
99 | #define MEMLOCK _IOW('M', 5, struct erase_info_user) | |
100 | #define MEMUNLOCK _IOW('M', 6, struct erase_info_user) | |
101 | #define MEMGETREGIONCOUNT _IOR('M', 7, int) | |
102 | #define MEMGETREGIONINFO _IOWR('M', 8, struct region_info_user) | |
103 | #define MEMSETOOBSEL _IOW('M', 9, struct nand_oobinfo) | |
104 | #define MEMGETOOBSEL _IOR('M', 10, struct nand_oobinfo) | |
105 | #define MEMGETBADBLOCK _IOW('M', 11, loff_t) | |
106 | #define MEMSETBADBLOCK _IOW('M', 12, loff_t) | |
31f4233b NP |
107 | #define OTPSELECT _IOR('M', 13, int) |
108 | #define OTPGETREGIONCOUNT _IOW('M', 14, int) | |
109 | #define OTPGETREGIONINFO _IOW('M', 15, struct otp_info) | |
110 | #define OTPLOCK _IOR('M', 16, struct otp_info) | |
1da177e4 LT |
111 | |
112 | struct nand_oobinfo { | |
113 | uint32_t useecc; | |
114 | uint32_t eccbytes; | |
115 | uint32_t oobfree[8][2]; | |
116 | uint32_t eccpos[32]; | |
117 | }; | |
118 | ||
119 | #endif /* __MTD_ABI_H__ */ |