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
ioremap(unsigned long physaddr,unsigned long size)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_uc ioremap
31 #define ioremap_wt ioremap_wt
ioremap_wt(unsigned long physaddr,unsigned long size)32 static inline void __iomem *ioremap_wt(unsigned long physaddr,
33 unsigned long size)
34 {
35 return __ioremap(physaddr, size, IOMAP_WRITETHROUGH);
36 }
37
38 #define memset_io memset_io
memset_io(volatile void __iomem * addr,unsigned char val,int count)39 static inline void memset_io(volatile void __iomem *addr, unsigned char val,
40 int count)
41 {
42 __builtin_memset((void __force *) addr, val, count);
43 }
44
45 #define memcpy_fromio memcpy_fromio
memcpy_fromio(void * dst,const volatile void __iomem * src,int count)46 static inline void memcpy_fromio(void *dst, const volatile void __iomem *src,
47 int count)
48 {
49 __builtin_memcpy(dst, (void __force *) src, count);
50 }
51
52 #define memcpy_toio memcpy_toio
memcpy_toio(volatile void __iomem * dst,const void * src,int count)53 static inline void memcpy_toio(volatile void __iomem *dst, const void *src,
54 int count)
55 {
56 __builtin_memcpy((void __force *) dst, src, count);
57 }
58
59 #endif /* CONFIG_MMU */
60
61 #define ioport_map ioport_map
ioport_map(unsigned long port,unsigned int nr)62 static inline void __iomem *ioport_map(unsigned long port, unsigned int nr)
63 {
64 return (void __iomem *) port;
65 }
66
67 #define ioport_unmap ioport_unmap
ioport_unmap(void __iomem * p)68 static inline void ioport_unmap(void __iomem *p)
69 {
70 }
71
72 #endif /* _KMAP_H */
73