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Diffstat (limited to 'package/broadcom-57xx/src/bcmendian.h')
| -rw-r--r-- | package/broadcom-57xx/src/bcmendian.h | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/package/broadcom-57xx/src/bcmendian.h b/package/broadcom-57xx/src/bcmendian.h new file mode 100644 index 0000000000..dc26d51fff --- /dev/null +++ b/package/broadcom-57xx/src/bcmendian.h @@ -0,0 +1,198 @@ +/* + * local version of endian.h - byte order defines + * + * Copyright 2007, Broadcom Corporation + * All Rights Reserved. + * + * THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY + * KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM + * SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS + * FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE. + * + * $Id: bcmendian.h,v 1.1.1.11 2007/05/31 08:00:41 michael Exp $ +*/ + +#ifndef _BCMENDIAN_H_ +#define _BCMENDIAN_H_ + +#include <typedefs.h> + +/* Byte swap a 16 bit value */ +#define BCMSWAP16(val) \ + ((uint16)(\ + (((uint16)(val) & (uint16)0x00ffU) << 8) | \ + (((uint16)(val) & (uint16)0xff00U) >> 8))) + +/* Byte swap a 32 bit value */ +#define BCMSWAP32(val) \ + ((uint32)(\ + (((uint32)(val) & (uint32)0x000000ffUL) << 24) | \ + (((uint32)(val) & (uint32)0x0000ff00UL) << 8) | \ + (((uint32)(val) & (uint32)0x00ff0000UL) >> 8) | \ + (((uint32)(val) & (uint32)0xff000000UL) >> 24))) + +/* 2 Byte swap a 32 bit value */ +#define BCMSWAP32BY16(val) \ + ((uint32)(\ + (((uint32)(val) & (uint32)0x0000ffffUL) << 16) | \ + (((uint32)(val) & (uint32)0xffff0000UL) >> 16))) + + +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); +} + +/* 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++; + } +} + +#ifndef hton16 +#ifndef IL_BIGENDIAN +#define HTON16(i) BCMSWAP16(i) +#define hton16(i) bcmswap16(i) +#define hton32(i) bcmswap32(i) +#define ntoh16(i) bcmswap16(i) +#define ntoh32(i) bcmswap32(i) +#define ltoh16(i) (i) +#define ltoh32(i) (i) +#define htol16(i) (i) +#define htol32(i) (i) +#else +#define HTON16(i) (i) +#define hton16(i) (i) +#define hton32(i) (i) +#define ntoh16(i) (i) +#define ntoh32(i) (i) +#define ltoh16(i) bcmswap16(i) +#define ltoh32(i) bcmswap32(i) +#define htol16(i) bcmswap16(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 */ + +/* +* 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[1] = val&0xff; + bytes[0] = val>>8; +} + +/* +* store 32-bit value to unaligned network(big) endian byte array. +*/ +static INLINE void +hton32_ua_store(uint32 val, uint8 *bytes) +{ + bytes[3] = val&0xff; + bytes[2] = (val>>8)&0xff; + bytes[1] = (val>>16)&0xff; + bytes[0] = val>>24; +} + +/* +* load 16-bit value from unaligned little endian byte array. +*/ +static INLINE uint16 +ltoh16_ua(void *bytes) +{ + return (((uint8*)bytes)[1]<<8)+((uint8 *)bytes)[0]; +} + +/* +* load 32-bit value from unaligned little endian byte array. +*/ +static INLINE uint32 +ltoh32_ua(void *bytes) +{ + return (((uint8*)bytes)[3]<<24)+(((uint8*)bytes)[2]<<16)+ + (((uint8*)bytes)[1]<<8)+((uint8*)bytes)[0]; +} + +/* +* load 16-bit value from unaligned big(network) endian byte array. +*/ +static INLINE uint16 +ntoh16_ua(void *bytes) +{ + return (((uint8*)bytes)[0]<<8)+((uint8*)bytes)[1]; +} + +/* +* load 32-bit value from unaligned big(network) endian byte array. +*/ +static INLINE uint32 +ntoh32_ua(void *bytes) +{ + return (((uint8*)bytes)[0]<<24)+(((uint8*)bytes)[1]<<16)+ + (((uint8*)bytes)[2]<<8)+((uint8*)bytes)[3]; +} + +#define ltoh_ua(ptr) (\ + sizeof(*(ptr)) == sizeof(uint8) ? *(uint8 *)ptr : \ + sizeof(*(ptr)) == sizeof(uint16) ? (((uint8 *)ptr)[1]<<8)+((uint8 *)ptr)[0] : \ + (((uint8 *)ptr)[3]<<24)+(((uint8 *)ptr)[2]<<16)+(((uint8 *)ptr)[1]<<8)+((uint8 *)ptr)[0] \ +) + +#define ntoh_ua(ptr) (\ + sizeof(*(ptr)) == sizeof(uint8) ? *(uint8 *)ptr : \ + sizeof(*(ptr)) == sizeof(uint16) ? (((uint8 *)ptr)[0]<<8)+((uint8 *)ptr)[1] : \ + (((uint8 *)ptr)[0]<<24)+(((uint8 *)ptr)[1]<<16)+(((uint8 *)ptr)[2]<<8)+((uint8 *)ptr)[3] \ +) + +#endif /* _BCMENDIAN_H_ */ |