/* * 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 */