Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
e4f0648f | 2 | * $Id: mtd-abi.h,v 1.13 2005/11/07 11:14:56 gleixner Exp $ |
1da177e4 | 3 | * |
e4f0648f | 4 | * Portions of MTD ABI definition which are shared by kernel and user space |
1da177e4 LT |
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 | |
8f15fd55 | 31 | #define MTD_DATAFLASH 6 |
1da177e4 LT |
32 | |
33 | #define MTD_CLEAR_BITS 1 // Bits can be cleared (flash) | |
34 | #define MTD_SET_BITS 2 // Bits can be set | |
1da177e4 | 35 | #define MTD_ECC 128 // Device capable of automatic ECC |
638d9838 | 36 | #define MTD_PROGRAM_REGIONS 512 // Configurable Programming Regions |
1da177e4 LT |
37 | |
38 | // Some common devices / combinations of capabilities | |
39 | #define MTD_CAP_ROM 0 | |
a6c591ed JE |
40 | #define MTD_CAP_RAM (MTD_CLEAR_BITS|MTD_SET_BITS) |
41 | #define MTD_CAP_NORFLASH (MTD_CLEAR_BITS) | |
42 | #define MTD_CAP_NANDFLASH (MTD_CLEAR_BITS) | |
1da177e4 LT |
43 | #define MTD_WRITEABLE (MTD_CLEAR_BITS|MTD_SET_BITS) |
44 | ||
45 | ||
46 | // Types of automatic ECC/Checksum available | |
47 | #define MTD_ECC_NONE 0 // No automatic ECC available | |
48 | #define MTD_ECC_RS_DiskOnChip 1 // Automatic ECC on DiskOnChip | |
49 | #define MTD_ECC_SW 2 // SW ECC for Toshiba & Samsung devices | |
50 | ||
51 | /* ECC byte placement */ | |
52 | #define MTD_NANDECC_OFF 0 // Switch off ECC (Not recommended) | |
53 | #define MTD_NANDECC_PLACE 1 // Use the given placement in the structure (YAFFS1 legacy mode) | |
54 | #define MTD_NANDECC_AUTOPLACE 2 // Use the default placement scheme | |
55 | #define MTD_NANDECC_PLACEONLY 3 // Use the given placement in the structure (Do not store ecc result on read) | |
90e260c8 | 56 | #define MTD_NANDECC_AUTOPL_USR 4 // Use the given autoplacement scheme rather than using the default |
1da177e4 | 57 | |
31f4233b NP |
58 | /* OTP mode selection */ |
59 | #define MTD_OTP_OFF 0 | |
60 | #define MTD_OTP_FACTORY 1 | |
61 | #define MTD_OTP_USER 2 | |
62 | ||
1da177e4 LT |
63 | struct mtd_info_user { |
64 | uint8_t type; | |
65 | uint32_t flags; | |
66 | uint32_t size; // Total size of the MTD | |
67 | uint32_t erasesize; | |
68 | uint32_t oobblock; // Size of OOB blocks (e.g. 512) | |
69 | uint32_t oobsize; // Amount of OOB data per block (e.g. 16) | |
70 | uint32_t ecctype; | |
71 | uint32_t eccsize; | |
72 | }; | |
73 | ||
74 | struct region_info_user { | |
e4f0648f | 75 | uint32_t offset; /* At which this region starts, |
1da177e4 LT |
76 | * from the beginning of the MTD */ |
77 | uint32_t erasesize; /* For this region */ | |
78 | uint32_t numblocks; /* Number of blocks in this region */ | |
79 | uint32_t regionindex; | |
80 | }; | |
81 | ||
f77814dd NP |
82 | struct otp_info { |
83 | uint32_t start; | |
84 | uint32_t length; | |
85 | uint32_t locked; | |
86 | }; | |
87 | ||
1da177e4 LT |
88 | #define MEMGETINFO _IOR('M', 1, struct mtd_info_user) |
89 | #define MEMERASE _IOW('M', 2, struct erase_info_user) | |
90 | #define MEMWRITEOOB _IOWR('M', 3, struct mtd_oob_buf) | |
91 | #define MEMREADOOB _IOWR('M', 4, struct mtd_oob_buf) | |
92 | #define MEMLOCK _IOW('M', 5, struct erase_info_user) | |
93 | #define MEMUNLOCK _IOW('M', 6, struct erase_info_user) | |
94 | #define MEMGETREGIONCOUNT _IOR('M', 7, int) | |
95 | #define MEMGETREGIONINFO _IOWR('M', 8, struct region_info_user) | |
96 | #define MEMSETOOBSEL _IOW('M', 9, struct nand_oobinfo) | |
97 | #define MEMGETOOBSEL _IOR('M', 10, struct nand_oobinfo) | |
98 | #define MEMGETBADBLOCK _IOW('M', 11, loff_t) | |
99 | #define MEMSETBADBLOCK _IOW('M', 12, loff_t) | |
31f4233b NP |
100 | #define OTPSELECT _IOR('M', 13, int) |
101 | #define OTPGETREGIONCOUNT _IOW('M', 14, int) | |
102 | #define OTPGETREGIONINFO _IOW('M', 15, struct otp_info) | |
103 | #define OTPLOCK _IOR('M', 16, struct otp_info) | |
1da177e4 LT |
104 | |
105 | struct nand_oobinfo { | |
106 | uint32_t useecc; | |
107 | uint32_t eccbytes; | |
108 | uint32_t oobfree[8][2]; | |
109 | uint32_t eccpos[32]; | |
110 | }; | |
111 | ||
112 | #endif /* __MTD_ABI_H__ */ |