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_uc ioremap 31 #define ioremap_wt ioremap_wt 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 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 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 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 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 68 static inline void ioport_unmap(void __iomem *p) 69 { 70 } 71 72 #endif /* _KMAP_H */ 73