mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-17 08:43:07 +00:00
23ff8633fd
Mainly sync asm/io.h to get a working ioremap() implementation as well as the full set of I/O accessors. Pull in additional header files to make this work. Furthermore port over the directory 'arch/mips/include/asm/mach-generic/' with contains default definitions for I/O and memory spaces and default implementations for mapping those spaces. All files in that directory can be overwritten by a SoC/machine. Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
50 lines
1.6 KiB
C
50 lines
1.6 KiB
C
/*
|
|
* Copyright (C) 2003, 2004 Ralf Baechle
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0
|
|
*/
|
|
#ifndef __ASM_MACH_GENERIC_MANGLE_PORT_H
|
|
#define __ASM_MACH_GENERIC_MANGLE_PORT_H
|
|
|
|
#define __swizzle_addr_b(port) (port)
|
|
#define __swizzle_addr_w(port) (port)
|
|
#define __swizzle_addr_l(port) (port)
|
|
#define __swizzle_addr_q(port) (port)
|
|
|
|
/*
|
|
* 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(a, x) (x)
|
|
# define __mem_ioswabb(a, x) (x)
|
|
# define ioswabw(a, x) le16_to_cpu(x)
|
|
# define __mem_ioswabw(a, x) (x)
|
|
# define ioswabl(a, x) le32_to_cpu(x)
|
|
# define __mem_ioswabl(a, x) (x)
|
|
# define ioswabq(a, x) le64_to_cpu(x)
|
|
# define __mem_ioswabq(a, x) (x)
|
|
|
|
#else
|
|
|
|
# define ioswabb(a, x) (x)
|
|
# define __mem_ioswabb(a, x) (x)
|
|
# define ioswabw(a, x) (x)
|
|
# define __mem_ioswabw(a, x) cpu_to_le16(x)
|
|
# define ioswabl(a, x) (x)
|
|
# define __mem_ioswabl(a, x) cpu_to_le32(x)
|
|
# define ioswabq(a, x) (x)
|
|
# define __mem_ioswabq(a, x) cpu_to_le32(x)
|
|
|
|
#endif
|
|
|
|
#endif /* __ASM_MACH_GENERIC_MANGLE_PORT_H */
|