projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| a1452a37 DW |
1 | /* |
| 2 | * Copyright © 2001-2010 David Woodhouse <dwmw2@infradead.org> | |
| 3 | * | |
| 4 | * This program is free software; you can redistribute it and/or modify | |
| 5 | * it under the terms of the GNU General Public License as published by | |
| 6 | * the Free Software Foundation; either version 2 of the License, or | |
| 7 | * (at your option) any later version. | |
| 8 | * | |
| 9 | * This program is distributed in the hope that it will be useful, | |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 12 | * GNU General Public License for more details. | |
| 13 | * | |
| 14 | * You should have received a copy of the GNU General Public License | |
| 15 | * along with this program; if not, write to the Free Software | |
| 16 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
| 17 | * | |
| 18 | */ | |
| 19 | ||
| 1da177e4 LT |
20 | #include <asm/byteorder.h> |
| 21 | ||
| 8e987465 AS |
22 | #define CFI_HOST_ENDIAN 1 |
| 23 | #define CFI_LITTLE_ENDIAN 2 | |
| 24 | #define CFI_BIG_ENDIAN 3 | |
| 25 | ||
| 26 | #if !defined(CONFIG_MTD_CFI_ADV_OPTIONS) || defined(CONFIG_MTD_CFI_NOSWAP) | |
| 27 | #define CFI_DEFAULT_ENDIAN CFI_HOST_ENDIAN | |
| 28 | #elif defined(CONFIG_MTD_CFI_LE_BYTE_SWAP) | |
| 29 | #define CFI_DEFAULT_ENDIAN CFI_LITTLE_ENDIAN | |
| 30 | #elif defined(CONFIG_MTD_CFI_BE_BYTE_SWAP) | |
| 31 | #define CFI_DEFAULT_ENDIAN CFI_BIG_ENDIAN | |
| 1da177e4 LT |
32 | #else |
| 33 | #error No CFI endianness defined | |
| 34 | #endif | |
| 8e987465 AS |
35 | |
| 36 | #define cfi_default(s) ((s)?:CFI_DEFAULT_ENDIAN) | |
| 37 | #define cfi_be(s) (cfi_default(s) == CFI_BIG_ENDIAN) | |
| 38 | #define cfi_le(s) (cfi_default(s) == CFI_LITTLE_ENDIAN) | |
| 39 | #define cfi_host(s) (cfi_default(s) == CFI_HOST_ENDIAN) | |
| 40 | ||
| 41 | #define cpu_to_cfi8(map, x) (x) | |
| 42 | #define cfi8_to_cpu(map, x) (x) | |
| 43 | #define cpu_to_cfi16(map, x) _cpu_to_cfi(16, (map)->swap, (x)) | |
| 44 | #define cpu_to_cfi32(map, x) _cpu_to_cfi(32, (map)->swap, (x)) | |
| 45 | #define cpu_to_cfi64(map, x) _cpu_to_cfi(64, (map)->swap, (x)) | |
| 46 | #define cfi16_to_cpu(map, x) _cfi_to_cpu(16, (map)->swap, (x)) | |
| 47 | #define cfi32_to_cpu(map, x) _cfi_to_cpu(32, (map)->swap, (x)) | |
| 48 | #define cfi64_to_cpu(map, x) _cfi_to_cpu(64, (map)->swap, (x)) | |
| 49 | ||
| 50 | #define _cpu_to_cfi(w, s, x) (cfi_host(s)?(x):_swap_to_cfi(w, s, x)) | |
| 51 | #define _cfi_to_cpu(w, s, x) (cfi_host(s)?(x):_swap_to_cpu(w, s, x)) | |
| 52 | #define _swap_to_cfi(w, s, x) (cfi_be(s)?cpu_to_be##w(x):cpu_to_le##w(x)) | |
| 53 | #define _swap_to_cpu(w, s, x) (cfi_be(s)?be##w##_to_cpu(x):le##w##_to_cpu(x)) |