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 extern void __iounmap(void *addr, unsigned long size); 24 25 #define ioremap ioremap 26 static inline void __iomem *ioremap(unsigned long physaddr, unsigned long size) 27 { 28 return __ioremap(physaddr, size, IOMAP_NOCACHE_SER); 29 } 30 31 #define ioremap_nocache ioremap 32 #define ioremap_uc ioremap 33 #define ioremap_wt ioremap_wt 34 static inline void __iomem *ioremap_wt(unsigned long physaddr, 35 unsigned long size) 36 { 37 return __ioremap(physaddr, size, IOMAP_WRITETHROUGH); 38 } 39 40 #define memset_io memset_io 41 static inline void memset_io(volatile void __iomem *addr, unsigned char val, 42 int count) 43 { 44 __builtin_memset((void __force *) addr, val, count); 45 } 46 47 #define memcpy_fromio memcpy_fromio 48 static inline void memcpy_fromio(void *dst, const volatile void __iomem *src, 49 int count) 50 { 51 __builtin_memcpy(dst, (void __force *) src, count); 52 } 53 54 #define memcpy_toio memcpy_toio 55 static inline void memcpy_toio(volatile void __iomem *dst, const void *src, 56 int count) 57 { 58 __builtin_memcpy((void __force *) dst, src, count); 59 } 60 61 #endif /* CONFIG_MMU */ 62 63 #define ioport_map ioport_map 64 static inline void __iomem *ioport_map(unsigned long port, unsigned int nr) 65 { 66 return (void __iomem *) port; 67 } 68 69 #define ioport_unmap ioport_unmap 70 static inline void ioport_unmap(void __iomem *p) 71 { 72 } 73 74 #endif /* _KMAP_H */ 75