summaryrefslogtreecommitdiffstats
path: root/arch/m68k/include/asm/io_no.h
blob: e9c70f754e0239d1f3c27bfdc1e15b63d23bc51c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _M68KNOMMU_IO_H
#define _M68KNOMMU_IO_H

/*
 * The non-MMU m68k and ColdFire IO and memory mapped hardware access
 * functions have always worked in CPU native endian. We need to define
 * that behavior here first before we include asm-generic/io.h.
 */
#define __raw_readb(addr) \
    ({ unsigned char __v = (*(volatile unsigned char *) (addr)); __v; })
#define __raw_readw(addr) \
    ({ unsigned short __v = (*(volatile unsigned short *) (addr)); __v; })
#define __raw_readl(addr) \
    ({ unsigned int __v = (*(volatile unsigned int *) (addr)); __v; })

#define __raw_writeb(b, addr) (void)((*(volatile unsigned char *) (addr)) = (b))
#define __raw_writew(b, addr) (void)((*(volatile unsigned short *) (addr)) = (b))
#define __raw_writel(b, addr) (void)((*(volatile unsigned int *) (addr)) = (b))

#define readb __raw_readb
#define readw __raw_readw
#define readl __raw_readl
#define writeb __raw_writeb
#define writew __raw_writew
#define writel __raw_writel

/*
 * These are defined in kmap.h as static inline functions. To maintain
 * previous behavior we put these define guards here so io_mm.h doesn't
 * see them.
 */
#ifdef CONFIG_MMU
#define memset_io memset_io
#define memcpy_fromio memcpy_fromio
#define memcpy_toio memcpy_toio
#endif

#include <asm/kmap.h>
#include <asm/virtconvert.h>
#include <asm-generic/io.h>

#endif /* _M68KNOMMU_IO_H */
OpenPOWER on IntegriCloud