mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-21 00:10:09 +00:00
6a0abce4c4
Update license to use SPDX-License-Identifier instead of verbose license text. Link: http://lkml.kernel.org/r/87ftvccszx.wl-kuninori.morimoto.gx@renesas.com Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Cc: Rich Felker <dalias@libc.org> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
46 lines
1.4 KiB
C
46 lines
1.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0
|
|
*
|
|
* SH version cribbed from the MIPS copy:
|
|
*
|
|
* Copyright (C) 2003, 2004 Ralf Baechle
|
|
*/
|
|
#ifndef __MACH_COMMON_MANGLE_PORT_H
|
|
#define __MACH_COMMON_MANGLE_PORT_H
|
|
|
|
/*
|
|
* Sane hardware offers swapping of PCI/ISA I/O space accesses in hardware;
|
|
* less sane hardware forces software to fiddle with this...
|
|
*
|
|
* Regardless, if the host bus endianness mismatches that of PCI/ISA, then
|
|
* you can't have the numerical value of data and byte addresses within
|
|
* multibyte quantities both preserved at the same time. Hence two
|
|
* variations of functions: non-prefixed ones that preserve the value
|
|
* and prefixed ones that preserve byte addresses. The latters are
|
|
* typically used for moving raw data between a peripheral and memory (cf.
|
|
* string I/O functions), hence the "__mem_" prefix.
|
|
*/
|
|
#if defined(CONFIG_SWAP_IO_SPACE)
|
|
|
|
# define ioswabb(x) (x)
|
|
# define __mem_ioswabb(x) (x)
|
|
# define ioswabw(x) le16_to_cpu(x)
|
|
# define __mem_ioswabw(x) (x)
|
|
# define ioswabl(x) le32_to_cpu(x)
|
|
# define __mem_ioswabl(x) (x)
|
|
# define ioswabq(x) le64_to_cpu(x)
|
|
# define __mem_ioswabq(x) (x)
|
|
|
|
#else
|
|
|
|
# define ioswabb(x) (x)
|
|
# define __mem_ioswabb(x) (x)
|
|
# define ioswabw(x) (x)
|
|
# define __mem_ioswabw(x) cpu_to_le16(x)
|
|
# define ioswabl(x) (x)
|
|
# define __mem_ioswabl(x) cpu_to_le32(x)
|
|
# define ioswabq(x) (x)
|
|
# define __mem_ioswabq(x) cpu_to_le32(x)
|
|
|
|
#endif
|
|
|
|
#endif /* __MACH_COMMON_MANGLE_PORT_H */
|