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