| /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| |
| #ifndef _ENDIAN_H_ |
| #define _ENDIAN_H_ |
| |
| #include <arch/byteorder.h> |
| #include <stdint.h> |
| #include <swab.h> |
| |
| #if defined(__LITTLE_ENDIAN) |
| #define cpu_to_le64(x) ((uint64_t)(x)) |
| #define le64_to_cpu(x) ((uint64_t)(x)) |
| #define cpu_to_le32(x) ((uint32_t)(x)) |
| #define le32_to_cpu(x) ((uint32_t)(x)) |
| #define cpu_to_le16(x) ((uint16_t)(x)) |
| #define le16_to_cpu(x) ((uint16_t)(x)) |
| #define cpu_to_be64(x) swab64(x) |
| #define be64_to_cpu(x) swab64(x) |
| #define cpu_to_be32(x) swab32(x) |
| #define be32_to_cpu(x) swab32(x) |
| #define cpu_to_be16(x) swab16(x) |
| #define be16_to_cpu(x) swab16(x) |
| #elif defined(__BIG_ENDIAN) |
| #define cpu_to_le64(x) swab64(x) |
| #define le64_to_cpu(x) swab64(x) |
| #define cpu_to_le32(x) swab32(x) |
| #define le32_to_cpu(x) swab32(x) |
| #define cpu_to_le16(x) swab16(x) |
| #define le16_to_cpu(x) swab16(x) |
| #define cpu_to_be64(x) ((uint64_t)(x)) |
| #define be64_to_cpu(x) ((uint64_t)(x)) |
| #define cpu_to_be32(x) ((uint32_t)(x)) |
| #define be32_to_cpu(x) ((uint32_t)(x)) |
| #define cpu_to_be16(x) ((uint16_t)(x)) |
| #define be16_to_cpu(x) ((uint16_t)(x)) |
| #else |
| #error "<arch/byteorder.h> must #define __LITTLE_ENDIAN or __BIG_ENDIAN" |
| #endif |
| |
| #define ntohll(x) be64_to_cpu(x) |
| #define htonll(x) cpu_to_be64(x) |
| #define ntohl(x) be32_to_cpu(x) |
| #define htonl(x) cpu_to_be32(x) |
| |
| #define __clrsetbits(endian, bits, addr, clear, set) \ |
| write##bits(addr, cpu_to_##endian##bits((endian##bits##_to_cpu( \ |
| read##bits(addr)) & ~((uint##bits##_t)(clear))) | (set))) |
| |
| #define clrbits_le64(addr, clear) __clrsetbits(le, 64, addr, clear, 0) |
| #define clrbits_be64(addr, clear) __clrsetbits(be, 64, addr, clear, 0) |
| #define clrbits_le32(addr, clear) __clrsetbits(le, 32, addr, clear, 0) |
| #define clrbits_be32(addr, clear) __clrsetbits(be, 32, addr, clear, 0) |
| #define clrbits_le16(addr, clear) __clrsetbits(le, 16, addr, clear, 0) |
| #define clrbits_be16(addr, clear) __clrsetbits(be, 16, addr, clear, 0) |
| |
| #define setbits_le64(addr, set) __clrsetbits(le, 64, addr, 0, set) |
| #define setbits_be64(addr, set) __clrsetbits(be, 64, addr, 0, set) |
| #define setbits_le32(addr, set) __clrsetbits(le, 32, addr, 0, set) |
| #define setbits_be32(addr, set) __clrsetbits(be, 32, addr, 0, set) |
| #define setbits_le16(addr, set) __clrsetbits(le, 16, addr, 0, set) |
| #define setbits_be16(addr, set) __clrsetbits(be, 16, addr, 0, set) |
| |
| #define clrsetbits_le64(addr, clear, set) __clrsetbits(le, 64, addr, clear, set) |
| #define clrsetbits_be64(addr, clear, set) __clrsetbits(be, 64, addr, clear, set) |
| #define clrsetbits_le32(addr, clear, set) __clrsetbits(le, 32, addr, clear, set) |
| #define clrsetbits_be32(addr, clear, set) __clrsetbits(be, 32, addr, clear, set) |
| #define clrsetbits_le16(addr, clear, set) __clrsetbits(le, 16, addr, clear, set) |
| #define clrsetbits_be16(addr, clear, set) __clrsetbits(be, 16, addr, clear, set) |
| |
| /* be16dec/be32dec/be64dec/le16dec/le32dec/le64dec family of functions. */ |
| #define DEFINE_ENDIAN_DEC(endian, width) \ |
| static inline uint##width##_t endian##width##dec(const void *p) \ |
| { \ |
| return endian##width##_to_cpu(*(uint##width##_t *)p); \ |
| } |
| DEFINE_ENDIAN_DEC(be, 16) |
| DEFINE_ENDIAN_DEC(be, 32) |
| DEFINE_ENDIAN_DEC(be, 64) |
| DEFINE_ENDIAN_DEC(le, 16) |
| DEFINE_ENDIAN_DEC(le, 32) |
| DEFINE_ENDIAN_DEC(le, 64) |
| |
| /* be16enc/be32enc/be64enc/le16enc/le32enc/le64enc family of functions. */ |
| #define DEFINE_ENDIAN_ENC(endian, width) \ |
| static inline void endian##width##enc(void *p, uint##width##_t u) \ |
| { \ |
| *(uint##width##_t *)p = cpu_to_##endian##width(u); \ |
| } |
| DEFINE_ENDIAN_ENC(be, 16) |
| DEFINE_ENDIAN_ENC(be, 32) |
| DEFINE_ENDIAN_ENC(be, 64) |
| DEFINE_ENDIAN_ENC(le, 16) |
| DEFINE_ENDIAN_ENC(le, 32) |
| DEFINE_ENDIAN_ENC(le, 64) |
| |
| /* |
| * Portable (API) endian support that can be used in code that is shared |
| * with userspace (man 3 endian) tools. |
| */ |
| static inline uint16_t htobe16(uint16_t host_16bits) |
| { |
| return cpu_to_be16(host_16bits); |
| } |
| |
| static inline uint16_t htole16(uint16_t host_16bits) |
| { |
| return cpu_to_le16(host_16bits); |
| } |
| |
| static inline uint16_t be16toh(uint16_t big_endian_16bits) |
| { |
| return be16_to_cpu(big_endian_16bits); |
| } |
| |
| static inline uint16_t le16toh(uint16_t little_endian_16bits) |
| { |
| return le16_to_cpu(little_endian_16bits); |
| } |
| |
| static inline uint32_t htobe32(uint32_t host_32bits) |
| { |
| return cpu_to_be32(host_32bits); |
| } |
| |
| static inline uint32_t htole32(uint32_t host_32bits) |
| { |
| return cpu_to_le32(host_32bits); |
| } |
| |
| static inline uint32_t be32toh(uint32_t big_endian_32bits) |
| { |
| return be32_to_cpu(big_endian_32bits); |
| } |
| |
| static inline uint32_t le32toh(uint32_t little_endian_32bits) |
| { |
| return le32_to_cpu(little_endian_32bits); |
| } |
| |
| static inline uint64_t htobe64(uint64_t host_64bits) |
| { |
| return cpu_to_be64(host_64bits); |
| } |
| |
| static inline uint64_t htole64(uint64_t host_64bits) |
| { |
| return cpu_to_le64(host_64bits); |
| } |
| |
| static inline uint64_t be64toh(uint64_t big_endian_64bits) |
| { |
| return be64_to_cpu(big_endian_64bits); |
| } |
| |
| static inline uint64_t le64toh(uint64_t little_endian_64bits) |
| { |
| return le64_to_cpu(little_endian_64bits); |
| } |
| |
| #endif |