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/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 2003, 2004 Ralf Baechle
*/
#ifndef __ASM_MACH_GENERIC_MANGLE_PORT_H
#define __ASM_MACH_GENERIC_MANGLE_PORT_H
#include <asm/byteorder.h>
#ifdef __BIG_ENDIAN
static inline bool __should_swizzle_bits(volatile void *a)
{
extern const bool octeon_should_swizzle_table[];
u64 did = ((u64)(uintptr_t)a >> 40) & 0xff;
return octeon_should_swizzle_table[did];
}
# define __swizzle_addr_b(port) (port)
# define __swizzle_addr_w(port) (port)
# define __swizzle_addr_l(port) (port)
# define __swizzle_addr_q(port) (port)
#else /* __LITTLE_ENDIAN */
#define __should_swizzle_bits(a) false
static inline bool __should_swizzle_addr(u64 p)
{
/* boot bus? */
return ((p >> 40) & 0xff) == 0;
}
# define __swizzle_addr_b(port) \
(__should_swizzle_addr(port) ? (port) ^ 7 : (port))
# define __swizzle_addr_w(port) \
(__should_swizzle_addr(port) ? (port) ^ 6 : (port))
# define __swizzle_addr_l(port) \
(__should_swizzle_addr(port) ? (port) ^ 4 : (port))
# define __swizzle_addr_q(port) (port)
#endif /* __BIG_ENDIAN */
# define ioswabb(a, x) (x)
# define __mem_ioswabb(a, x) (x)
# define ioswabw(a, x) (__should_swizzle_bits(a) ? \
le16_to_cpu((__force __le16)(x)) : \
(x))
# define __mem_ioswabw(a, x) (x)
# define ioswabl(a, x) (__should_swizzle_bits(a) ? \
le32_to_cpu((__force __le32)(x)) : \
(x))
# define __mem_ioswabl(a, x) (x)
# define ioswabq(a, x) (__should_swizzle_bits(a) ? \
le64_to_cpu((__force __le64)(x)) : \
(x))
# define __mem_ioswabq(a, x) (x)
#endif /* __ASM_MACH_GENERIC_MANGLE_PORT_H */