tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _KMAP_H
3#define _KMAP_H
4
5#ifdef CONFIG_MMU
6
7#define ARCH_HAS_IOREMAP_WT
8
9/* Values for nocacheflag and cmode */
10#define IOMAP_FULL_CACHING 0
11#define IOMAP_NOCACHE_SER 1
12#define IOMAP_NOCACHE_NONSER 2
13#define IOMAP_WRITETHROUGH 3
14
15/*
16 * These functions exported by arch/m68k/mm/kmap.c.
17 * Only needed on MMU enabled systems.
18 */
19extern void __iomem *__ioremap(unsigned long physaddr, unsigned long size,
20 int cacheflag);
21#define iounmap iounmap
22extern void iounmap(void __iomem *addr);
23extern void __iounmap(void *addr, unsigned long size);
24
25#define ioremap ioremap
26static inline void __iomem *ioremap(unsigned long physaddr, unsigned long size)
27{
28 return __ioremap(physaddr, size, IOMAP_NOCACHE_SER);
29}
30
31#define ioremap_nocache ioremap
32#define ioremap_uc ioremap
33#define ioremap_wt ioremap_wt
34static inline void __iomem *ioremap_wt(unsigned long physaddr,
35 unsigned long size)
36{
37 return __ioremap(physaddr, size, IOMAP_WRITETHROUGH);
38}
39
40#define memset_io memset_io
41static inline void memset_io(volatile void __iomem *addr, unsigned char val,
42 int count)
43{
44 __builtin_memset((void __force *) addr, val, count);
45}
46
47#define memcpy_fromio memcpy_fromio
48static inline void memcpy_fromio(void *dst, const volatile void __iomem *src,
49 int count)
50{
51 __builtin_memcpy(dst, (void __force *) src, count);
52}
53
54#define memcpy_toio memcpy_toio
55static inline void memcpy_toio(volatile void __iomem *dst, const void *src,
56 int count)
57{
58 __builtin_memcpy((void __force *) dst, src, count);
59}
60
61#endif /* CONFIG_MMU */
62
63#define ioport_map ioport_map
64static inline void __iomem *ioport_map(unsigned long port, unsigned int nr)
65{
66 return (void __iomem *) port;
67}
68
69#define ioport_unmap ioport_unmap
70static inline void ioport_unmap(void __iomem *p)
71{
72}
73
74#endif /* _KMAP_H */