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