| /* |
| * 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(x) : x) |
| # define __mem_ioswabw(a, x) (x) |
| # define ioswabl(a, x) (__should_swizzle_bits(a) ? le32_to_cpu(x) : x) |
| # define __mem_ioswabl(a, x) (x) |
| # define ioswabq(a, x) (__should_swizzle_bits(a) ? le64_to_cpu(x) : x) |
| # define __mem_ioswabq(a, x) (x) |
| |
| #endif /* __ASM_MACH_GENERIC_MANGLE_PORT_H */ |
