diff options
| -rw-r--r-- | include/asm-sh/io.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/include/asm-sh/io.h b/include/asm-sh/io.h index 03427ad..51fd10b 100644 --- a/include/asm-sh/io.h +++ b/include/asm-sh/io.h @@ -227,5 +227,32 @@ out: static inline void sync(void) { } + +/* + * Given a physical address and a length, return a virtual address + * that can be used to access the memory range with the caching + * properties specified by "flags". + */ +typedef unsigned long phys_addr_t; + +#define MAP_NOCACHE (0) +#define MAP_WRCOMBINE (0) +#define MAP_WRBACK (0) +#define MAP_WRTHROUGH (0) + +static inline void * +map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags) +{ + return (void *)paddr; +} + +/* + * Take down a mapping set up by map_physmem(). + */ +static inline void unmap_physmem(void *vaddr, unsigned long flags) +{ + +} + #endif /* __KERNEL__ */ #endif /* __ASM_SH_IO_H */ |