162306a36Sopenharmony_ci/* 262306a36Sopenharmony_ci * This file is subject to the terms and conditions of the GNU General Public 362306a36Sopenharmony_ci * License. See the file "COPYING" in the main directory of this archive 462306a36Sopenharmony_ci * for more details. 562306a36Sopenharmony_ci * 662306a36Sopenharmony_ci * Copyright (C) 2003, 2004 Ralf Baechle 762306a36Sopenharmony_ci */ 862306a36Sopenharmony_ci#ifndef __ASM_MACH_GENERIC_MANGLE_PORT_H 962306a36Sopenharmony_ci#define __ASM_MACH_GENERIC_MANGLE_PORT_H 1062306a36Sopenharmony_ci 1162306a36Sopenharmony_ci#include <asm/byteorder.h> 1262306a36Sopenharmony_ci 1362306a36Sopenharmony_ci#ifdef __BIG_ENDIAN 1462306a36Sopenharmony_ci 1562306a36Sopenharmony_cistatic inline bool __should_swizzle_bits(volatile void *a) 1662306a36Sopenharmony_ci{ 1762306a36Sopenharmony_ci extern const bool octeon_should_swizzle_table[]; 1862306a36Sopenharmony_ci u64 did = ((u64)(uintptr_t)a >> 40) & 0xff; 1962306a36Sopenharmony_ci 2062306a36Sopenharmony_ci return octeon_should_swizzle_table[did]; 2162306a36Sopenharmony_ci} 2262306a36Sopenharmony_ci 2362306a36Sopenharmony_ci# define __swizzle_addr_b(port) (port) 2462306a36Sopenharmony_ci# define __swizzle_addr_w(port) (port) 2562306a36Sopenharmony_ci# define __swizzle_addr_l(port) (port) 2662306a36Sopenharmony_ci# define __swizzle_addr_q(port) (port) 2762306a36Sopenharmony_ci 2862306a36Sopenharmony_ci#else /* __LITTLE_ENDIAN */ 2962306a36Sopenharmony_ci 3062306a36Sopenharmony_ci#define __should_swizzle_bits(a) false 3162306a36Sopenharmony_ci 3262306a36Sopenharmony_cistatic inline bool __should_swizzle_addr(u64 p) 3362306a36Sopenharmony_ci{ 3462306a36Sopenharmony_ci /* boot bus? */ 3562306a36Sopenharmony_ci return ((p >> 40) & 0xff) == 0; 3662306a36Sopenharmony_ci} 3762306a36Sopenharmony_ci 3862306a36Sopenharmony_ci# define __swizzle_addr_b(port) \ 3962306a36Sopenharmony_ci (__should_swizzle_addr(port) ? (port) ^ 7 : (port)) 4062306a36Sopenharmony_ci# define __swizzle_addr_w(port) \ 4162306a36Sopenharmony_ci (__should_swizzle_addr(port) ? (port) ^ 6 : (port)) 4262306a36Sopenharmony_ci# define __swizzle_addr_l(port) \ 4362306a36Sopenharmony_ci (__should_swizzle_addr(port) ? (port) ^ 4 : (port)) 4462306a36Sopenharmony_ci# define __swizzle_addr_q(port) (port) 4562306a36Sopenharmony_ci 4662306a36Sopenharmony_ci#endif /* __BIG_ENDIAN */ 4762306a36Sopenharmony_ci 4862306a36Sopenharmony_ci 4962306a36Sopenharmony_ci# define ioswabb(a, x) (x) 5062306a36Sopenharmony_ci# define __mem_ioswabb(a, x) (x) 5162306a36Sopenharmony_ci# define ioswabw(a, x) (__should_swizzle_bits(a) ? \ 5262306a36Sopenharmony_ci le16_to_cpu((__force __le16)(x)) : \ 5362306a36Sopenharmony_ci (x)) 5462306a36Sopenharmony_ci# define __mem_ioswabw(a, x) (x) 5562306a36Sopenharmony_ci# define ioswabl(a, x) (__should_swizzle_bits(a) ? \ 5662306a36Sopenharmony_ci le32_to_cpu((__force __le32)(x)) : \ 5762306a36Sopenharmony_ci (x)) 5862306a36Sopenharmony_ci# define __mem_ioswabl(a, x) (x) 5962306a36Sopenharmony_ci# define ioswabq(a, x) (__should_swizzle_bits(a) ? \ 6062306a36Sopenharmony_ci le64_to_cpu((__force __le64)(x)) : \ 6162306a36Sopenharmony_ci (x)) 6262306a36Sopenharmony_ci# define __mem_ioswabq(a, x) (x) 6362306a36Sopenharmony_ci 6462306a36Sopenharmony_ci#endif /* __ASM_MACH_GENERIC_MANGLE_PORT_H */ 65