LXR linux/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 */
  19extern void __iomem *__ioremap(unsigned long physaddr, unsigned long size,
  20                               int cacheflag);
  21#define iounmap iounmap
  22extern void iounmap(void __iomem *addr);
  23extern void __iounmap(void *addr, unsigned long size);
  24
  25#define ioremap ioremap
  26static 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
  34static 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
  41static 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
  48static 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
  55static 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
  64static 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
  70static inline void ioport_unmap(void __iomem *p)
  71{
  72}
  73
  74#endif /* _KMAP_H */
  75