diff options
Diffstat (limited to 'include/asm-um/io.h')
-rw-r--r-- | include/asm-um/io.h | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/include/asm-um/io.h b/include/asm-um/io.h new file mode 100644 index 0000000..9067405 --- /dev/null +++ b/include/asm-um/io.h @@ -0,0 +1,36 @@ +#ifndef __UM_IO_H +#define __UM_IO_H + +#include "asm/page.h" + +#define IO_SPACE_LIMIT 0xdeadbeef /* Sure hope nothing uses this */ + +static inline int inb(unsigned long i) { return(0); } +static inline void outb(char c, unsigned long i) { } + +/* + * Change virtual addresses to physical addresses and vv. + * These are pretty trivial + */ +static inline unsigned long virt_to_phys(volatile void * address) +{ + return __pa((void *) address); +} + +static inline void * phys_to_virt(unsigned long address) +{ + return __va(address); +} + +/* + * Convert a physical pointer to a virtual kernel pointer for /dev/mem + * access + */ +#define xlate_dev_mem_ptr(p) __va(p) + +/* + * Convert a virtual cached pointer to an uncached pointer + */ +#define xlate_dev_kmem_ptr(p) p + +#endif |