arch/m68k/include/asm/kmap.h

   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 */