Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
47 lines
1.4 KiB
C
47 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 */
|