1*4882a593Smuzhiyun /* 2*4882a593Smuzhiyun * This file is subject to the terms and conditions of the GNU General Public 3*4882a593Smuzhiyun * License. See the file "COPYING" in the main directory of this archive 4*4882a593Smuzhiyun * for more details. 5*4882a593Smuzhiyun * 6*4882a593Smuzhiyun * Copyright (C) 2003, 2004 Ralf Baechle 7*4882a593Smuzhiyun */ 8*4882a593Smuzhiyun #ifndef __ASM_MACH_GENERIC_MANGLE_PORT_H 9*4882a593Smuzhiyun #define __ASM_MACH_GENERIC_MANGLE_PORT_H 10*4882a593Smuzhiyun 11*4882a593Smuzhiyun #include <asm/byteorder.h> 12*4882a593Smuzhiyun 13*4882a593Smuzhiyun #ifdef __BIG_ENDIAN 14*4882a593Smuzhiyun __should_swizzle_bits(volatile void * a)15*4882a593Smuzhiyunstatic inline bool __should_swizzle_bits(volatile void *a) 16*4882a593Smuzhiyun { 17*4882a593Smuzhiyun extern const bool octeon_should_swizzle_table[]; 18*4882a593Smuzhiyun u64 did = ((u64)(uintptr_t)a >> 40) & 0xff; 19*4882a593Smuzhiyun 20*4882a593Smuzhiyun return octeon_should_swizzle_table[did]; 21*4882a593Smuzhiyun } 22*4882a593Smuzhiyun 23*4882a593Smuzhiyun # define __swizzle_addr_b(port) (port) 24*4882a593Smuzhiyun # define __swizzle_addr_w(port) (port) 25*4882a593Smuzhiyun # define __swizzle_addr_l(port) (port) 26*4882a593Smuzhiyun # define __swizzle_addr_q(port) (port) 27*4882a593Smuzhiyun 28*4882a593Smuzhiyun #else /* __LITTLE_ENDIAN */ 29*4882a593Smuzhiyun 30*4882a593Smuzhiyun #define __should_swizzle_bits(a) false 31*4882a593Smuzhiyun __should_swizzle_addr(u64 p)32*4882a593Smuzhiyunstatic inline bool __should_swizzle_addr(u64 p) 33*4882a593Smuzhiyun { 34*4882a593Smuzhiyun /* boot bus? */ 35*4882a593Smuzhiyun return ((p >> 40) & 0xff) == 0; 36*4882a593Smuzhiyun } 37*4882a593Smuzhiyun 38*4882a593Smuzhiyun # define __swizzle_addr_b(port) \ 39*4882a593Smuzhiyun (__should_swizzle_addr(port) ? (port) ^ 7 : (port)) 40*4882a593Smuzhiyun # define __swizzle_addr_w(port) \ 41*4882a593Smuzhiyun (__should_swizzle_addr(port) ? (port) ^ 6 : (port)) 42*4882a593Smuzhiyun # define __swizzle_addr_l(port) \ 43*4882a593Smuzhiyun (__should_swizzle_addr(port) ? (port) ^ 4 : (port)) 44*4882a593Smuzhiyun # define __swizzle_addr_q(port) (port) 45*4882a593Smuzhiyun 46*4882a593Smuzhiyun #endif /* __BIG_ENDIAN */ 47*4882a593Smuzhiyun 48*4882a593Smuzhiyun 49*4882a593Smuzhiyun # define ioswabb(a, x) (x) 50*4882a593Smuzhiyun # define __mem_ioswabb(a, x) (x) 51*4882a593Smuzhiyun # define ioswabw(a, x) (__should_swizzle_bits(a) ? \ 52*4882a593Smuzhiyun le16_to_cpu((__force __le16)(x)) : \ 53*4882a593Smuzhiyun (x)) 54*4882a593Smuzhiyun # define __mem_ioswabw(a, x) (x) 55*4882a593Smuzhiyun # define ioswabl(a, x) (__should_swizzle_bits(a) ? \ 56*4882a593Smuzhiyun le32_to_cpu((__force __le32)(x)) : \ 57*4882a593Smuzhiyun (x)) 58*4882a593Smuzhiyun # define __mem_ioswabl(a, x) (x) 59*4882a593Smuzhiyun # define ioswabq(a, x) (__should_swizzle_bits(a) ? \ 60*4882a593Smuzhiyun le64_to_cpu((__force __le64)(x)) : \ 61*4882a593Smuzhiyun (x)) 62*4882a593Smuzhiyun # define __mem_ioswabq(a, x) (x) 63*4882a593Smuzhiyun 64*4882a593Smuzhiyun #endif /* __ASM_MACH_GENERIC_MANGLE_PORT_H */ 65