[deliverable/linux.git] / include / asm-um / io.h

#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
Commit	Line	Data
1da177e4 LT	1	#ifndef __UM_IO_H
	2	#define __UM_IO_H
	3
	4	#include "asm/page.h"
	5
	6	#define IO_SPACE_LIMIT 0xdeadbeef /* Sure hope nothing uses this */
	7
	8	static inline int inb(unsigned long i) { return(0); }
	9	static inline void outb(char c, unsigned long i) { }
	10
	11	/*
	12	* Change virtual addresses to physical addresses and vv.
	13	* These are pretty trivial
	14	*/
	15	static inline unsigned long virt_to_phys(volatile void * address)
	16	{
	17	return __pa((void *) address);
	18	}
	19
	20	static inline void * phys_to_virt(unsigned long address)
	21	{
	22	return __va(address);
	23	}
	24
	25	/*
	26	* Convert a physical pointer to a virtual kernel pointer for /dev/mem
	27	* access
	28	*/
	29	#define xlate_dev_mem_ptr(p) __va(p)
	30
	31	/*
	32	* Convert a virtual cached pointer to an uncached pointer
	33	*/
	34	#define xlate_dev_kmem_ptr(p) p
	35
	36	#endif