| /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| /* |
| * Copyright © 2001-2010 David Woodhouse <dwmw2@infradead.org> |
| */ |
| |
| #include <asm/byteorder.h> |
| |
| #define CFI_HOST_ENDIAN 1 |
| #define CFI_LITTLE_ENDIAN 2 |
| #define CFI_BIG_ENDIAN 3 |
| |
| #if !defined(CONFIG_MTD_CFI_ADV_OPTIONS) || defined(CONFIG_MTD_CFI_NOSWAP) |
| #define CFI_DEFAULT_ENDIAN CFI_HOST_ENDIAN |
| #elif defined(CONFIG_MTD_CFI_LE_BYTE_SWAP) |
| #define CFI_DEFAULT_ENDIAN CFI_LITTLE_ENDIAN |
| #elif defined(CONFIG_MTD_CFI_BE_BYTE_SWAP) |
| #define CFI_DEFAULT_ENDIAN CFI_BIG_ENDIAN |
| #else |
| #error No CFI endianness defined |
| #endif |
| |
| #define cfi_default(s) ((s)?:CFI_DEFAULT_ENDIAN) |
| #define cfi_be(s) (cfi_default(s) == CFI_BIG_ENDIAN) |
| #define cfi_le(s) (cfi_default(s) == CFI_LITTLE_ENDIAN) |
| #define cfi_host(s) (cfi_default(s) == CFI_HOST_ENDIAN) |
| |
| #define cpu_to_cfi8(map, x) (x) |
| #define cfi8_to_cpu(map, x) (x) |
| #define cpu_to_cfi16(map, x) _cpu_to_cfi(16, (map)->swap, (x)) |
| #define cpu_to_cfi32(map, x) _cpu_to_cfi(32, (map)->swap, (x)) |
| #define cpu_to_cfi64(map, x) _cpu_to_cfi(64, (map)->swap, (x)) |
| #define cfi16_to_cpu(map, x) _cfi_to_cpu(16, (map)->swap, (x)) |
| #define cfi32_to_cpu(map, x) _cfi_to_cpu(32, (map)->swap, (x)) |
| #define cfi64_to_cpu(map, x) _cfi_to_cpu(64, (map)->swap, (x)) |
| |
| #define _cpu_to_cfi(w, s, x) (cfi_host(s)?(x):_swap_to_cfi(w, s, x)) |
| #define _cfi_to_cpu(w, s, x) (cfi_host(s)?(x):_swap_to_cpu(w, s, x)) |
| #define _swap_to_cfi(w, s, x) (cfi_be(s)?cpu_to_be##w(x):cpu_to_le##w(x)) |
| #define _swap_to_cpu(w, s, x) (cfi_be(s)?be##w##_to_cpu(x):le##w##_to_cpu(x)) |