kmap.h 1.7 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172
  1. /* SPDX-License-Identifier: GPL-2.0 */
  2. #ifndef _KMAP_H
  3. #define _KMAP_H
  4. #ifdef CONFIG_MMU
  5. #define ARCH_HAS_IOREMAP_WT
  6. /* Values for nocacheflag and cmode */
  7. #define IOMAP_FULL_CACHING 0
  8. #define IOMAP_NOCACHE_SER 1
  9. #define IOMAP_NOCACHE_NONSER 2
  10. #define IOMAP_WRITETHROUGH 3
  11. /*
  12. * These functions exported by arch/m68k/mm/kmap.c.
  13. * Only needed on MMU enabled systems.
  14. */
  15. extern void __iomem *__ioremap(unsigned long physaddr, unsigned long size,
  16. int cacheflag);
  17. #define iounmap iounmap
  18. extern void iounmap(void __iomem *addr);
  19. #define ioremap ioremap
  20. static inline void __iomem *ioremap(unsigned long physaddr, unsigned long size)
  21. {
  22. return __ioremap(physaddr, size, IOMAP_NOCACHE_SER);
  23. }
  24. #define ioremap_uc ioremap
  25. #define ioremap_wt ioremap_wt
  26. static inline void __iomem *ioremap_wt(unsigned long physaddr,
  27. unsigned long size)
  28. {
  29. return __ioremap(physaddr, size, IOMAP_WRITETHROUGH);
  30. }
  31. #define memset_io memset_io
  32. static inline void memset_io(volatile void __iomem *addr, unsigned char val,
  33. int count)
  34. {
  35. __builtin_memset((void __force *) addr, val, count);
  36. }
  37. #define memcpy_fromio memcpy_fromio
  38. static inline void memcpy_fromio(void *dst, const volatile void __iomem *src,
  39. int count)
  40. {
  41. __builtin_memcpy(dst, (void __force *) src, count);
  42. }
  43. #define memcpy_toio memcpy_toio
  44. static inline void memcpy_toio(volatile void __iomem *dst, const void *src,
  45. int count)
  46. {
  47. __builtin_memcpy((void __force *) dst, src, count);
  48. }
  49. #endif /* CONFIG_MMU */
  50. #define ioport_map ioport_map
  51. static inline void __iomem *ioport_map(unsigned long port, unsigned int nr)
  52. {
  53. return (void __iomem *) port;
  54. }
  55. #define ioport_unmap ioport_unmap
  56. static inline void ioport_unmap(void __iomem *p)
  57. {
  58. }
  59. #endif /* _KMAP_H */