| /* |
| * Copyright (c) 2010 Broadcom Corporation |
| * |
| * Permission to use, copy, modify, and/or distribute this software for any |
| * purpose with or without fee is hereby granted, provided that the above |
| * copyright notice and this permission notice appear in all copies. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY |
| * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION |
| * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN |
| * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| */ |
| |
| #ifndef _BCMENDIAN_H_ |
| #define _BCMENDIAN_H_ |
| |
| #include <typedefs.h> |
| |
| /* Reverse the bytes in a 16-bit value */ |
| #define BCMSWAP16(val) \ |
| ((uint16)((((uint16)(val) & (uint16)0x00ffU) << 8) | \ |
| (((uint16)(val) & (uint16)0xff00U) >> 8))) |
| |
| /* Reverse the bytes in a 32-bit value */ |
| #define BCMSWAP32(val) \ |
| ((uint32)((((uint32)(val) & (uint32)0x000000ffU) << 24) | \ |
| (((uint32)(val) & (uint32)0x0000ff00U) << 8) | \ |
| (((uint32)(val) & (uint32)0x00ff0000U) >> 8) | \ |
| (((uint32)(val) & (uint32)0xff000000U) >> 24))) |
| |
| /* Reverse the two 16-bit halves of a 32-bit value */ |
| #define BCMSWAP32BY16(val) \ |
| ((uint32)((((uint32)(val) & (uint32)0x0000ffffU) << 16) | \ |
| (((uint32)(val) & (uint32)0xffff0000U) >> 16))) |
| |
| /* Byte swapping macros |
| * Host <=> Network (Big Endian) for 16- and 32-bit values |
| * Host <=> Little-Endian for 16- and 32-bit values |
| */ |
| #ifndef hton16 |
| #ifndef IL_BIGENDIAN |
| #define HTON16(i) BCMSWAP16(i) |
| #define hton16(i) bcmswap16(i) |
| #define HTON32(i) BCMSWAP32(i) |
| #define hton32(i) bcmswap32(i) |
| #define NTOH16(i) BCMSWAP16(i) |
| #define ntoh16(i) bcmswap16(i) |
| #define NTOH32(i) BCMSWAP32(i) |
| #define ntoh32(i) bcmswap32(i) |
| #define LTOH16(i) (i) |
| #define ltoh16(i) (i) |
| #define LTOH32(i) (i) |
| #define ltoh32(i) (i) |
| #define HTOL16(i) (i) |
| #define htol16(i) (i) |
| #define HTOL32(i) (i) |
| #define htol32(i) (i) |
| #else /* IL_BIGENDIAN */ |
| #define HTON16(i) (i) |
| #define hton16(i) (i) |
| #define HTON32(i) (i) |
| #define hton32(i) (i) |
| #define NTOH16(i) (i) |
| #define ntoh16(i) (i) |
| #define NTOH32(i) (i) |
| #define ntoh32(i) (i) |
| #define LTOH16(i) BCMSWAP16(i) |
| #define ltoh16(i) bcmswap16(i) |
| #define LTOH32(i) BCMSWAP32(i) |
| #define ltoh32(i) bcmswap32(i) |
| #define HTOL16(i) BCMSWAP16(i) |
| #define htol16(i) bcmswap16(i) |
| #define HTOL32(i) BCMSWAP32(i) |
| #define htol32(i) bcmswap32(i) |
| #endif /* IL_BIGENDIAN */ |
| #endif /* hton16 */ |
| |
| #ifndef IL_BIGENDIAN |
| #define ltoh16_buf(buf, i) |
| #define htol16_buf(buf, i) |
| #else |
| #define ltoh16_buf(buf, i) bcmswap16_buf((uint16 *)(buf), (i)) |
| #define htol16_buf(buf, i) bcmswap16_buf((uint16 *)(buf), (i)) |
| #endif /* IL_BIGENDIAN */ |
| |
| /* Unaligned loads and stores in host byte order */ |
| #ifndef IL_BIGENDIAN |
| #define load32_ua(a) ltoh32_ua(a) |
| #define store32_ua(a, v) htol32_ua_store(v, a) |
| #define load16_ua(a) ltoh16_ua(a) |
| #define store16_ua(a, v) htol16_ua_store(v, a) |
| #else |
| #define load32_ua(a) ntoh32_ua(a) |
| #define store32_ua(a, v) hton32_ua_store(v, a) |
| #define load16_ua(a) ntoh16_ua(a) |
| #define store16_ua(a, v) hton16_ua_store(v, a) |
| #endif /* IL_BIGENDIAN */ |
| |
| #define _LTOH16_UA(cp) ((cp)[0] | ((cp)[1] << 8)) |
| #define _LTOH32_UA(cp) ((cp)[0] | ((cp)[1] << 8) | ((cp)[2] << 16) | ((cp)[3] << 24)) |
| #define _NTOH16_UA(cp) (((cp)[0] << 8) | (cp)[1]) |
| #define _NTOH32_UA(cp) (((cp)[0] << 24) | ((cp)[1] << 16) | ((cp)[2] << 8) | (cp)[3]) |
| |
| #define ltoh_ua(ptr) \ |
| (sizeof(*(ptr)) == sizeof(uint8) ? *(const uint8 *)(ptr) : \ |
| sizeof(*(ptr)) == sizeof(uint16) ? _LTOH16_UA((const uint8 *)(ptr)) : \ |
| sizeof(*(ptr)) == sizeof(uint32) ? _LTOH32_UA((const uint8 *)(ptr)) : \ |
| *(uint8 *)0) |
| |
| #define ntoh_ua(ptr) \ |
| (sizeof(*(ptr)) == sizeof(uint8) ? *(const uint8 *)(ptr) : \ |
| sizeof(*(ptr)) == sizeof(uint16) ? _NTOH16_UA((const uint8 *)(ptr)) : \ |
| sizeof(*(ptr)) == sizeof(uint32) ? _NTOH32_UA((const uint8 *)(ptr)) : \ |
| *(uint8 *)0) |
| |
| #ifdef __GNUC__ |
| |
| /* GNU macro versions avoid referencing the argument multiple times, while also |
| * avoiding the -fno-inline used in ROM builds. |
| */ |
| |
| #define bcmswap16(val) ({ \ |
| uint16 _val = (val); \ |
| BCMSWAP16(_val); \ |
| }) |
| |
| #define bcmswap32(val) ({ \ |
| uint32 _val = (val); \ |
| BCMSWAP32(_val); \ |
| }) |
| |
| #define bcmswap32by16(val) ({ \ |
| uint32 _val = (val); \ |
| BCMSWAP32BY16(_val); \ |
| }) |
| |
| #define bcmswap16_buf(buf, len) ({ \ |
| uint16 *_buf = (uint16 *)(buf); \ |
| uint _wds = (len) / 2; \ |
| while (_wds--) { \ |
| *_buf = bcmswap16(*_buf); \ |
| _buf++; \ |
| } \ |
| }) |
| |
| #define htol16_ua_store(val, bytes) ({ \ |
| uint16 _val = (val); \ |
| uint8 *_bytes = (uint8 *)(bytes); \ |
| _bytes[0] = _val & 0xff; \ |
| _bytes[1] = _val >> 8; \ |
| }) |
| |
| #define htol32_ua_store(val, bytes) ({ \ |
| uint32 _val = (val); \ |
| uint8 *_bytes = (uint8 *)(bytes); \ |
| _bytes[0] = _val & 0xff; \ |
| _bytes[1] = (_val >> 8) & 0xff; \ |
| _bytes[2] = (_val >> 16) & 0xff; \ |
| _bytes[3] = _val >> 24; \ |
| }) |
| |
| #define hton16_ua_store(val, bytes) ({ \ |
| uint16 _val = (val); \ |
| uint8 *_bytes = (uint8 *)(bytes); \ |
| _bytes[0] = _val >> 8; \ |
| _bytes[1] = _val & 0xff; \ |
| }) |
| |
| #define hton32_ua_store(val, bytes) ({ \ |
| uint32 _val = (val); \ |
| uint8 *_bytes = (uint8 *)(bytes); \ |
| _bytes[0] = _val >> 24; \ |
| _bytes[1] = (_val >> 16) & 0xff; \ |
| _bytes[2] = (_val >> 8) & 0xff; \ |
| _bytes[3] = _val & 0xff; \ |
| }) |
| |
| #define ltoh16_ua(bytes) ({ \ |
| const uint8 *_bytes = (const uint8 *)(bytes); \ |
| _LTOH16_UA(_bytes); \ |
| }) |
| |
| #define ltoh32_ua(bytes) ({ \ |
| const uint8 *_bytes = (const uint8 *)(bytes); \ |
| _LTOH32_UA(_bytes); \ |
| }) |
| |
| #define ntoh16_ua(bytes) ({ \ |
| const uint8 *_bytes = (const uint8 *)(bytes); \ |
| _NTOH16_UA(_bytes); \ |
| }) |
| |
| #define ntoh32_ua(bytes) ({ \ |
| const uint8 *_bytes = (const uint8 *)(bytes); \ |
| _NTOH32_UA(_bytes); \ |
| }) |
| |
| #else /* !__GNUC__ */ |
| |
| /* Inline versions avoid referencing the argument multiple times */ |
| static inline uint16 bcmswap16(uint16 val) |
| { |
| return BCMSWAP16(val); |
| } |
| |
| static inline uint32 bcmswap32(uint32 val) |
| { |
| return BCMSWAP32(val); |
| } |
| |
| static inline uint32 bcmswap32by16(uint32 val) |
| { |
| return BCMSWAP32BY16(val); |
| } |
| |
| /* Reverse pairs of bytes in a buffer (not for high-performance use) */ |
| /* buf - start of buffer of shorts to swap */ |
| /* len - byte length of buffer */ |
| static inline void bcmswap16_buf(uint16 *buf, uint len) |
| { |
| len = len / 2; |
| |
| while (len--) { |
| *buf = bcmswap16(*buf); |
| buf++; |
| } |
| } |
| |
| /* |
| * Store 16-bit value to unaligned little-endian byte array. |
| */ |
| static inline void htol16_ua_store(uint16 val, uint8 *bytes) |
| { |
| bytes[0] = val & 0xff; |
| bytes[1] = val >> 8; |
| } |
| |
| /* |
| * Store 32-bit value to unaligned little-endian byte array. |
| */ |
| static inline void htol32_ua_store(uint32 val, uint8 *bytes) |
| { |
| bytes[0] = val & 0xff; |
| bytes[1] = (val >> 8) & 0xff; |
| bytes[2] = (val >> 16) & 0xff; |
| bytes[3] = val >> 24; |
| } |
| |
| /* |
| * Store 16-bit value to unaligned network-(big-)endian byte array. |
| */ |
| static inline void hton16_ua_store(uint16 val, uint8 *bytes) |
| { |
| bytes[0] = val >> 8; |
| bytes[1] = val & 0xff; |
| } |
| |
| /* |
| * Store 32-bit value to unaligned network-(big-)endian byte array. |
| */ |
| static inline void hton32_ua_store(uint32 val, uint8 *bytes) |
| { |
| bytes[0] = val >> 24; |
| bytes[1] = (val >> 16) & 0xff; |
| bytes[2] = (val >> 8) & 0xff; |
| bytes[3] = val & 0xff; |
| } |
| |
| /* |
| * Load 16-bit value from unaligned little-endian byte array. |
| */ |
| static inline uint16 ltoh16_ua(const void *bytes) |
| { |
| return _LTOH16_UA((const uint8 *)bytes); |
| } |
| |
| /* |
| * Load 32-bit value from unaligned little-endian byte array. |
| */ |
| static inline uint32 ltoh32_ua(const void *bytes) |
| { |
| return _LTOH32_UA((const uint8 *)bytes); |
| } |
| |
| /* |
| * Load 16-bit value from unaligned big-(network-)endian byte array. |
| */ |
| static inline uint16 ntoh16_ua(const void *bytes) |
| { |
| return _NTOH16_UA((const uint8 *)bytes); |
| } |
| |
| /* |
| * Load 32-bit value from unaligned big-(network-)endian byte array. |
| */ |
| static inline uint32 ntoh32_ua(const void *bytes) |
| { |
| return _NTOH32_UA((const uint8 *)bytes); |
| } |
| |
| #endif /* !__GNUC__ */ |
| #endif /* !_BCMENDIAN_H_ */ |