mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-06-09 23:36:03 +09:00
mips: octeon: Add mangle-port.h
Import platform specific mangle-port.h header, allowing a area specific swapping, which is needed on Octeon for USB & PCI areas. Imported from Linux v5.7. Signed-off-by: Stefan Roese <sr@denx.de>
This commit is contained in:
parent
fd569c878b
commit
b28d35234c
56
arch/mips/mach-octeon/include/mangle-port.h
Normal file
56
arch/mips/mach-octeon/include/mangle-port.h
Normal file
|
@ -0,0 +1,56 @@
|
|||
/* 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 */
|
Loading…
Reference in New Issue
Block a user