1 /* SPDX-License-Identifier: GPL-2.0 */
3 * Copyright (C) 2003, 2004 Ralf Baechle
6 #ifndef __ASM_MACH_GENERIC_MANGLE_PORT_H
7 #define __ASM_MACH_GENERIC_MANGLE_PORT_H
9 #include <asm/byteorder.h>
13 static inline bool __should_swizzle_bits(volatile void *a)
15 extern const bool octeon_should_swizzle_table[];
16 u64 did = ((u64)(uintptr_t)a >> 40) & 0xff;
18 return octeon_should_swizzle_table[did];
21 # define __swizzle_addr_b(port) (port)
22 # define __swizzle_addr_w(port) (port)
23 # define __swizzle_addr_l(port) (port)
24 # define __swizzle_addr_q(port) (port)
26 #else /* __LITTLE_ENDIAN */
28 #define __should_swizzle_bits(a) false
30 static inline bool __should_swizzle_addr(u64 p)
33 return ((p >> 40) & 0xff) == 0;
36 # define __swizzle_addr_b(port) \
37 (__should_swizzle_addr(port) ? (port) ^ 7 : (port))
38 # define __swizzle_addr_w(port) \
39 (__should_swizzle_addr(port) ? (port) ^ 6 : (port))
40 # define __swizzle_addr_l(port) \
41 (__should_swizzle_addr(port) ? (port) ^ 4 : (port))
42 # define __swizzle_addr_q(port) (port)
44 #endif /* __BIG_ENDIAN */
47 # define ioswabb(a, x) (x)
48 # define __mem_ioswabb(a, x) (x)
49 # define ioswabw(a, x) (__should_swizzle_bits(a) ? le16_to_cpu(x) : x)
50 # define __mem_ioswabw(a, x) (x)
51 # define ioswabl(a, x) (__should_swizzle_bits(a) ? le32_to_cpu(x) : x)
52 # define __mem_ioswabl(a, x) (x)
53 # define ioswabq(a, x) (__should_swizzle_bits(a) ? le64_to_cpu(x) : x)
54 # define __mem_ioswabq(a, x) (x)
56 #endif /* __ASM_MACH_GENERIC_MANGLE_PORT_H */