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 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_uc ioremap 29 #define ioremap_wt ioremap_wt 30 static inline void __iomem *ioremap_wt(unsigned long physaddr, 31 unsigned long size) 32 { 33 return __ioremap(physaddr, size, IOMAP_WRITETHROUGH); 34 } 35 36 #define memset_io memset_io 37 static inline void memset_io(volatile void __iomem *addr, unsigned char val, 38 int count) 39 { 40 __builtin_memset((void __force *) addr, val, count); 41 } 42 43 #define memcpy_fromio memcpy_fromio 44 static inline void memcpy_fromio(void *dst, const volatile void __iomem *src, 45 int count) 46 { 47 __builtin_memcpy(dst, (void __force *) src, count); 48 } 49 50 #define memcpy_toio memcpy_toio 51 static inline void memcpy_toio(volatile void __iomem *dst, const void *src, 52 int count) 53 { 54 __builtin_memcpy((void __force *) dst, src, count); 55 } 56 57 #endif /* CONFIG_MMU */ 58 59 #define ioport_map ioport_map 60 static inline void __iomem *ioport_map(unsigned long port, unsigned int nr) 61 { 62 return (void __iomem *) port; 63 } 64 65 #define ioport_unmap ioport_unmap 66 static inline void ioport_unmap(void __iomem *p) 67 { 68 } 69 70 #endif /* _KMAP_H */ 71