1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
2 | /* |
3 | * Copyright © 2001-2010 David Woodhouse <dwmw2@infradead.org> |
4 | */ |
5 | |
6 | #include <asm/byteorder.h> |
7 | |
8 | #define CFI_HOST_ENDIAN 1 |
9 | #define CFI_LITTLE_ENDIAN 2 |
10 | #define CFI_BIG_ENDIAN 3 |
11 | |
12 | #if !defined(CONFIG_MTD_CFI_ADV_OPTIONS) || defined(CONFIG_MTD_CFI_NOSWAP) |
13 | #define CFI_DEFAULT_ENDIAN CFI_HOST_ENDIAN |
14 | #elif defined(CONFIG_MTD_CFI_LE_BYTE_SWAP) |
15 | #define CFI_DEFAULT_ENDIAN CFI_LITTLE_ENDIAN |
16 | #elif defined(CONFIG_MTD_CFI_BE_BYTE_SWAP) |
17 | #define CFI_DEFAULT_ENDIAN CFI_BIG_ENDIAN |
18 | #else |
19 | #error No CFI endianness defined |
20 | #endif |
21 | |
22 | #define cfi_default(s) ((s)?:CFI_DEFAULT_ENDIAN) |
23 | #define cfi_be(s) (cfi_default(s) == CFI_BIG_ENDIAN) |
24 | #define cfi_le(s) (cfi_default(s) == CFI_LITTLE_ENDIAN) |
25 | #define cfi_host(s) (cfi_default(s) == CFI_HOST_ENDIAN) |
26 | |
27 | #define cpu_to_cfi8(map, x) (x) |
28 | #define cfi8_to_cpu(map, x) (x) |
29 | #define cpu_to_cfi16(map, x) _cpu_to_cfi(16, (map)->swap, (x)) |
30 | #define cpu_to_cfi32(map, x) _cpu_to_cfi(32, (map)->swap, (x)) |
31 | #define cpu_to_cfi64(map, x) _cpu_to_cfi(64, (map)->swap, (x)) |
32 | #define cfi16_to_cpu(map, x) _cfi_to_cpu(16, (map)->swap, (x)) |
33 | #define cfi32_to_cpu(map, x) _cfi_to_cpu(32, (map)->swap, (x)) |
34 | #define cfi64_to_cpu(map, x) _cfi_to_cpu(64, (map)->swap, (x)) |
35 | |
36 | #define _cpu_to_cfi(w, s, x) (cfi_host(s)?(x):_swap_to_cfi(w, s, x)) |
37 | #define _cfi_to_cpu(w, s, x) (cfi_host(s)?(x):_swap_to_cpu(w, s, x)) |
38 | #define _swap_to_cfi(w, s, x) (cfi_be(s)?cpu_to_be##w(x):cpu_to_le##w(x)) |
39 | #define _swap_to_cpu(w, s, x) (cfi_be(s)?be##w##_to_cpu(x):le##w##_to_cpu(x)) |
40 | |