18c2ecf20Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0-or-later */ 28c2ecf20Sopenharmony_ci/* 38c2ecf20Sopenharmony_ci * Copyright © 2001-2010 David Woodhouse <dwmw2@infradead.org> 48c2ecf20Sopenharmony_ci */ 58c2ecf20Sopenharmony_ci 68c2ecf20Sopenharmony_ci#include <asm/byteorder.h> 78c2ecf20Sopenharmony_ci 88c2ecf20Sopenharmony_ci#define CFI_HOST_ENDIAN 1 98c2ecf20Sopenharmony_ci#define CFI_LITTLE_ENDIAN 2 108c2ecf20Sopenharmony_ci#define CFI_BIG_ENDIAN 3 118c2ecf20Sopenharmony_ci 128c2ecf20Sopenharmony_ci#if !defined(CONFIG_MTD_CFI_ADV_OPTIONS) || defined(CONFIG_MTD_CFI_NOSWAP) 138c2ecf20Sopenharmony_ci#define CFI_DEFAULT_ENDIAN CFI_HOST_ENDIAN 148c2ecf20Sopenharmony_ci#elif defined(CONFIG_MTD_CFI_LE_BYTE_SWAP) 158c2ecf20Sopenharmony_ci#define CFI_DEFAULT_ENDIAN CFI_LITTLE_ENDIAN 168c2ecf20Sopenharmony_ci#elif defined(CONFIG_MTD_CFI_BE_BYTE_SWAP) 178c2ecf20Sopenharmony_ci#define CFI_DEFAULT_ENDIAN CFI_BIG_ENDIAN 188c2ecf20Sopenharmony_ci#else 198c2ecf20Sopenharmony_ci#error No CFI endianness defined 208c2ecf20Sopenharmony_ci#endif 218c2ecf20Sopenharmony_ci 228c2ecf20Sopenharmony_ci#define cfi_default(s) ((s)?:CFI_DEFAULT_ENDIAN) 238c2ecf20Sopenharmony_ci#define cfi_be(s) (cfi_default(s) == CFI_BIG_ENDIAN) 248c2ecf20Sopenharmony_ci#define cfi_le(s) (cfi_default(s) == CFI_LITTLE_ENDIAN) 258c2ecf20Sopenharmony_ci#define cfi_host(s) (cfi_default(s) == CFI_HOST_ENDIAN) 268c2ecf20Sopenharmony_ci 278c2ecf20Sopenharmony_ci#define cpu_to_cfi8(map, x) (x) 288c2ecf20Sopenharmony_ci#define cfi8_to_cpu(map, x) (x) 298c2ecf20Sopenharmony_ci#define cpu_to_cfi16(map, x) _cpu_to_cfi(16, (map)->swap, (x)) 308c2ecf20Sopenharmony_ci#define cpu_to_cfi32(map, x) _cpu_to_cfi(32, (map)->swap, (x)) 318c2ecf20Sopenharmony_ci#define cpu_to_cfi64(map, x) _cpu_to_cfi(64, (map)->swap, (x)) 328c2ecf20Sopenharmony_ci#define cfi16_to_cpu(map, x) _cfi_to_cpu(16, (map)->swap, (x)) 338c2ecf20Sopenharmony_ci#define cfi32_to_cpu(map, x) _cfi_to_cpu(32, (map)->swap, (x)) 348c2ecf20Sopenharmony_ci#define cfi64_to_cpu(map, x) _cfi_to_cpu(64, (map)->swap, (x)) 358c2ecf20Sopenharmony_ci 368c2ecf20Sopenharmony_ci#define _cpu_to_cfi(w, s, x) (cfi_host(s)?(x):_swap_to_cfi(w, s, x)) 378c2ecf20Sopenharmony_ci#define _cfi_to_cpu(w, s, x) (cfi_host(s)?(x):_swap_to_cpu(w, s, x)) 388c2ecf20Sopenharmony_ci#define _swap_to_cfi(w, s, x) (cfi_be(s)?cpu_to_be##w(x):cpu_to_le##w(x)) 398c2ecf20Sopenharmony_ci#define _swap_to_cpu(w, s, x) (cfi_be(s)?be##w##_to_cpu(x):le##w##_to_cpu(x)) 40