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/*
* 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.
*
* $Id$
*/
#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_ */
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