mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-08 14:14:32 +00:00
57 lines
1.5 KiB
C
57 lines
1.5 KiB
C
|
/* SPDX-License-Identifier: GPL-2.0 */
|
||
|
|
/*
|
||
|
|
* 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 */
|