xref: /openbmc/linux/arch/m68k/include/asm/kmap.h (revision 7b73a9c8)
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 
24 #define ioremap ioremap
25 static inline void __iomem *ioremap(unsigned long physaddr, unsigned long size)
26 {
27 	return __ioremap(physaddr, size, IOMAP_NOCACHE_SER);
28 }
29 
30 #define ioremap_nocache ioremap
31 #define ioremap_uc ioremap
32 #define ioremap_wt ioremap_wt
33 static inline void __iomem *ioremap_wt(unsigned long physaddr,
34 				       unsigned long size)
35 {
36 	return __ioremap(physaddr, size, IOMAP_WRITETHROUGH);
37 }
38 
39 #define memset_io memset_io
40 static inline void memset_io(volatile void __iomem *addr, unsigned char val,
41 			     int count)
42 {
43 	__builtin_memset((void __force *) addr, val, count);
44 }
45 
46 #define memcpy_fromio memcpy_fromio
47 static inline void memcpy_fromio(void *dst, const volatile void __iomem *src,
48 				 int count)
49 {
50 	__builtin_memcpy(dst, (void __force *) src, count);
51 }
52 
53 #define memcpy_toio memcpy_toio
54 static inline void memcpy_toio(volatile void __iomem *dst, const void *src,
55 			       int count)
56 {
57 	__builtin_memcpy((void __force *) dst, src, count);
58 }
59 
60 #endif /* CONFIG_MMU */
61 
62 #define ioport_map ioport_map
63 static inline void __iomem *ioport_map(unsigned long port, unsigned int nr)
64 {
65 	return (void __iomem *) port;
66 }
67 
68 #define ioport_unmap ioport_unmap
69 static inline void ioport_unmap(void __iomem *p)
70 {
71 }
72 
73 #endif /* _KMAP_H */
74