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 */
19 extern void __iomem *__ioremap(unsigned long physaddr, unsigned long size,
20 int cacheflag);
21 #define iounmap iounmap
22 extern void iounmap(void __iomem *addr);
23 extern void __iounmap(void *addr, unsigned long size);
24
25 #define ioremap ioremap
ioremap(unsigned long physaddr,unsigned long size)26 static 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_nocache
ioremap_nocache(unsigned long physaddr,unsigned long size)32 static inline void __iomem *ioremap_nocache(unsigned long physaddr,
33 unsigned long size)
34 {
35 return __ioremap(physaddr, size, IOMAP_NOCACHE_SER);
36 }
37
38 #define ioremap_uc ioremap_nocache
39 #define ioremap_wt ioremap_wt
ioremap_wt(unsigned long physaddr,unsigned long size)40 static inline void __iomem *ioremap_wt(unsigned long physaddr,
41 unsigned long size)
42 {
43 return __ioremap(physaddr, size, IOMAP_WRITETHROUGH);
44 }
45
46 #define ioremap_fullcache ioremap_fullcache
ioremap_fullcache(unsigned long physaddr,unsigned long size)47 static inline void __iomem *ioremap_fullcache(unsigned long physaddr,
48 unsigned long size)
49 {
50 return __ioremap(physaddr, size, IOMAP_FULL_CACHING);
51 }
52
53 #define memset_io memset_io
memset_io(volatile void __iomem * addr,unsigned char val,int count)54 static inline void memset_io(volatile void __iomem *addr, unsigned char val,
55 int count)
56 {
57 __builtin_memset((void __force *) addr, val, count);
58 }
59
60 #define memcpy_fromio memcpy_fromio
memcpy_fromio(void * dst,const volatile void __iomem * src,int count)61 static inline void memcpy_fromio(void *dst, const volatile void __iomem *src,
62 int count)
63 {
64 __builtin_memcpy(dst, (void __force *) src, count);
65 }
66
67 #define memcpy_toio memcpy_toio
memcpy_toio(volatile void __iomem * dst,const void * src,int count)68 static inline void memcpy_toio(volatile void __iomem *dst, const void *src,
69 int count)
70 {
71 __builtin_memcpy((void __force *) dst, src, count);
72 }
73
74 #endif /* CONFIG_MMU */
75
76 #define ioport_map ioport_map
ioport_map(unsigned long port,unsigned int nr)77 static inline void __iomem *ioport_map(unsigned long port, unsigned int nr)
78 {
79 return (void __iomem *) port;
80 }
81
82 #define ioport_unmap ioport_unmap
ioport_unmap(void __iomem * p)83 static inline void ioport_unmap(void __iomem *p)
84 {
85 }
86
87 #endif /* _KMAP_H */
88
