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Diffstat (limited to 'package/linux/kernel-source/include/bcmendian.h')
-rw-r--r-- | package/linux/kernel-source/include/bcmendian.h | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/package/linux/kernel-source/include/bcmendian.h b/package/linux/kernel-source/include/bcmendian.h new file mode 100644 index 000000000..6a2ed90f6 --- /dev/null +++ b/package/linux/kernel-source/include/bcmendian.h @@ -0,0 +1,127 @@ +/* + * local version of endian.h - byte order defines + * + * Copyright 2004, 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. + * + * $Id$ +*/ + +#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) )) + +static INLINE uint16 +bcmswap16(uint16 val) +{ + return BCMSWAP16(val); +} + +static INLINE uint32 +bcmswap32(uint32 val) +{ + return BCMSWAP32(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 +#endif + +#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 + +/* +* load 16-bit value from unaligned little endian byte array. +*/ +static INLINE uint16 +ltoh16_ua(uint8 *bytes) +{ + return (bytes[1]<<8)+bytes[0]; +} + +/* +* load 32-bit value from unaligned little endian byte array. +*/ +static INLINE uint32 +ltoh32_ua(uint8 *bytes) +{ + return (bytes[3]<<24)+(bytes[2]<<16)+(bytes[1]<<8)+bytes[0]; +} + +/* +* load 16-bit value from unaligned big(network) endian byte array. +*/ +static INLINE uint16 +ntoh16_ua(uint8 *bytes) +{ + return (bytes[0]<<8)+bytes[1]; +} + +/* +* load 32-bit value from unaligned big(network) endian byte array. +*/ +static INLINE uint32 +ntoh32_ua(uint8 *bytes) +{ + return (bytes[0]<<24)+(bytes[1]<<16)+(bytes[2]<<8)+bytes[3]; +} + +#endif /* _BCMENDIAN_H_ */ |