Patrick Georgi | ac95903 | 2020-05-05 22:49:26 +0200 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
Hung-Te Lin | 6fe0cab | 2013-01-22 18:57:56 +0800 | [diff] [blame] | 2 | |
| 3 | #ifndef _ENDIAN_H_ |
| 4 | #define _ENDIAN_H_ |
| 5 | |
| 6 | #include <arch/byteorder.h> |
Julius Werner | 9ff8f6f | 2015-02-23 14:31:09 -0800 | [diff] [blame] | 7 | #include <stdint.h> |
| 8 | #include <swab.h> |
| 9 | |
| 10 | #if defined(__LITTLE_ENDIAN) |
| 11 | #define cpu_to_le64(x) ((uint64_t)(x)) |
| 12 | #define le64_to_cpu(x) ((uint64_t)(x)) |
| 13 | #define cpu_to_le32(x) ((uint32_t)(x)) |
| 14 | #define le32_to_cpu(x) ((uint32_t)(x)) |
| 15 | #define cpu_to_le16(x) ((uint16_t)(x)) |
| 16 | #define le16_to_cpu(x) ((uint16_t)(x)) |
| 17 | #define cpu_to_be64(x) swab64(x) |
| 18 | #define be64_to_cpu(x) swab64(x) |
| 19 | #define cpu_to_be32(x) swab32(x) |
| 20 | #define be32_to_cpu(x) swab32(x) |
| 21 | #define cpu_to_be16(x) swab16(x) |
| 22 | #define be16_to_cpu(x) swab16(x) |
| 23 | #elif defined(__BIG_ENDIAN) |
| 24 | #define cpu_to_le64(x) swab64(x) |
| 25 | #define le64_to_cpu(x) swab64(x) |
| 26 | #define cpu_to_le32(x) swab32(x) |
| 27 | #define le32_to_cpu(x) swab32(x) |
| 28 | #define cpu_to_le16(x) swab16(x) |
| 29 | #define le16_to_cpu(x) swab16(x) |
| 30 | #define cpu_to_be64(x) ((uint64_t)(x)) |
| 31 | #define be64_to_cpu(x) ((uint64_t)(x)) |
| 32 | #define cpu_to_be32(x) ((uint32_t)(x)) |
| 33 | #define be32_to_cpu(x) ((uint32_t)(x)) |
| 34 | #define cpu_to_be16(x) ((uint16_t)(x)) |
| 35 | #define be16_to_cpu(x) ((uint16_t)(x)) |
| 36 | #else |
| 37 | #error "<arch/byteorder.h> must #define __LITTLE_ENDIAN or __BIG_ENDIAN" |
| 38 | #endif |
| 39 | |
| 40 | #define ntohll(x) be64_to_cpu(x) |
| 41 | #define htonll(x) cpu_to_be64(x) |
| 42 | #define ntohl(x) be32_to_cpu(x) |
| 43 | #define htonl(x) cpu_to_be32(x) |
| 44 | |
| 45 | #define __clrsetbits(endian, bits, addr, clear, set) \ |
| 46 | write##bits(addr, cpu_to_##endian##bits((endian##bits##_to_cpu( \ |
| 47 | read##bits(addr)) & ~((uint##bits##_t)(clear))) | (set))) |
| 48 | |
| 49 | #define clrbits_le64(addr, clear) __clrsetbits(le, 64, addr, clear, 0) |
| 50 | #define clrbits_be64(addr, clear) __clrsetbits(be, 64, addr, clear, 0) |
| 51 | #define clrbits_le32(addr, clear) __clrsetbits(le, 32, addr, clear, 0) |
| 52 | #define clrbits_be32(addr, clear) __clrsetbits(be, 32, addr, clear, 0) |
| 53 | #define clrbits_le16(addr, clear) __clrsetbits(le, 16, addr, clear, 0) |
| 54 | #define clrbits_be16(addr, clear) __clrsetbits(be, 16, addr, clear, 0) |
| 55 | |
| 56 | #define setbits_le64(addr, set) __clrsetbits(le, 64, addr, 0, set) |
| 57 | #define setbits_be64(addr, set) __clrsetbits(be, 64, addr, 0, set) |
| 58 | #define setbits_le32(addr, set) __clrsetbits(le, 32, addr, 0, set) |
| 59 | #define setbits_be32(addr, set) __clrsetbits(be, 32, addr, 0, set) |
| 60 | #define setbits_le16(addr, set) __clrsetbits(le, 16, addr, 0, set) |
| 61 | #define setbits_be16(addr, set) __clrsetbits(be, 16, addr, 0, set) |
| 62 | |
| 63 | #define clrsetbits_le64(addr, clear, set) __clrsetbits(le, 64, addr, clear, set) |
| 64 | #define clrsetbits_be64(addr, clear, set) __clrsetbits(be, 64, addr, clear, set) |
| 65 | #define clrsetbits_le32(addr, clear, set) __clrsetbits(le, 32, addr, clear, set) |
| 66 | #define clrsetbits_be32(addr, clear, set) __clrsetbits(be, 32, addr, clear, set) |
| 67 | #define clrsetbits_le16(addr, clear, set) __clrsetbits(le, 16, addr, clear, set) |
| 68 | #define clrsetbits_be16(addr, clear, set) __clrsetbits(be, 16, addr, clear, set) |
| 69 | |
Julius Werner | e8e92d6 | 2019-05-07 17:29:21 -0700 | [diff] [blame] | 70 | /* be16dec/be32dec/be64dec/le16dec/le32dec/le64dec family of functions. */ |
| 71 | #define DEFINE_ENDIAN_DEC(endian, width) \ |
| 72 | static inline uint##width##_t endian##width##dec(const void *p) \ |
| 73 | { \ |
| 74 | return endian##width##_to_cpu(*(uint##width##_t *)p); \ |
| 75 | } |
| 76 | DEFINE_ENDIAN_DEC(be, 16) |
| 77 | DEFINE_ENDIAN_DEC(be, 32) |
| 78 | DEFINE_ENDIAN_DEC(be, 64) |
| 79 | DEFINE_ENDIAN_DEC(le, 16) |
| 80 | DEFINE_ENDIAN_DEC(le, 32) |
| 81 | DEFINE_ENDIAN_DEC(le, 64) |
| 82 | |
| 83 | /* be16enc/be32enc/be64enc/le16enc/le32enc/le64enc family of functions. */ |
| 84 | #define DEFINE_ENDIAN_ENC(endian, width) \ |
| 85 | static inline void endian##width##enc(void *p, uint##width##_t u) \ |
| 86 | { \ |
| 87 | *(uint##width##_t *)p = cpu_to_##endian##width(u); \ |
| 88 | } |
| 89 | DEFINE_ENDIAN_ENC(be, 16) |
| 90 | DEFINE_ENDIAN_ENC(be, 32) |
| 91 | DEFINE_ENDIAN_ENC(be, 64) |
| 92 | DEFINE_ENDIAN_ENC(le, 16) |
| 93 | DEFINE_ENDIAN_ENC(le, 32) |
| 94 | DEFINE_ENDIAN_ENC(le, 64) |
| 95 | |
Aaron Durbin | 94a7499 | 2015-09-10 12:08:34 -0500 | [diff] [blame] | 96 | /* |
| 97 | * Portable (API) endian support that can be used in code that is shared |
| 98 | * with userspace (man 3 endian) tools. |
| 99 | */ |
| 100 | static inline uint16_t htobe16(uint16_t host_16bits) |
| 101 | { |
| 102 | return cpu_to_be16(host_16bits); |
| 103 | } |
| 104 | |
| 105 | static inline uint16_t htole16(uint16_t host_16bits) |
| 106 | { |
| 107 | return cpu_to_le16(host_16bits); |
| 108 | } |
| 109 | |
| 110 | static inline uint16_t be16toh(uint16_t big_endian_16bits) |
| 111 | { |
| 112 | return be16_to_cpu(big_endian_16bits); |
| 113 | } |
| 114 | |
| 115 | static inline uint16_t le16toh(uint16_t little_endian_16bits) |
| 116 | { |
| 117 | return le16_to_cpu(little_endian_16bits); |
| 118 | } |
| 119 | |
| 120 | static inline uint32_t htobe32(uint32_t host_32bits) |
| 121 | { |
| 122 | return cpu_to_be32(host_32bits); |
| 123 | } |
| 124 | |
| 125 | static inline uint32_t htole32(uint32_t host_32bits) |
| 126 | { |
| 127 | return cpu_to_le32(host_32bits); |
| 128 | } |
| 129 | |
| 130 | static inline uint32_t be32toh(uint32_t big_endian_32bits) |
| 131 | { |
| 132 | return be32_to_cpu(big_endian_32bits); |
| 133 | } |
| 134 | |
| 135 | static inline uint32_t le32toh(uint32_t little_endian_32bits) |
| 136 | { |
| 137 | return le32_to_cpu(little_endian_32bits); |
| 138 | } |
| 139 | |
| 140 | static inline uint64_t htobe64(uint64_t host_64bits) |
| 141 | { |
| 142 | return cpu_to_be64(host_64bits); |
| 143 | } |
| 144 | |
| 145 | static inline uint64_t htole64(uint64_t host_64bits) |
| 146 | { |
| 147 | return cpu_to_le64(host_64bits); |
| 148 | } |
| 149 | |
| 150 | static inline uint64_t be64toh(uint64_t big_endian_64bits) |
| 151 | { |
| 152 | return be64_to_cpu(big_endian_64bits); |
| 153 | } |
| 154 | |
| 155 | static inline uint64_t le64toh(uint64_t little_endian_64bits) |
| 156 | { |
Aaron Durbin | 113d821 | 2015-09-10 22:27:55 -0500 | [diff] [blame] | 157 | return le64_to_cpu(little_endian_64bits); |
Aaron Durbin | 94a7499 | 2015-09-10 12:08:34 -0500 | [diff] [blame] | 158 | } |
Aaron Durbin | 94a7499 | 2015-09-10 12:08:34 -0500 | [diff] [blame] | 159 | |
Hung-Te Lin | 6fe0cab | 2013-01-22 18:57:56 +0800 | [diff] [blame] | 160 | #endif |