lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

x86, um: initial part of asm-um move

Browse Source 
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
This commit is contained in:
Al Viro
2008-08-17 19:13:17 -04:00
committed by H. Peter Anvin
parent 8569c9140b
commit 8ede0bdb63
145 changed files with 9 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

57
arch/um/include/asm/io.h Normal file
View File

@@ -0,0 +1,57 @@
#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
static inline void writeb(unsigned char b, volatile void __iomem *addr)
{
*(volatile unsigned char __force *) addr = b;
}
static inline void writew(unsigned short b, volatile void __iomem *addr)
{
*(volatile unsigned short __force *) addr = b;
}
static inline void writel(unsigned int b, volatile void __iomem *addr)
{
*(volatile unsigned int __force *) addr = b;
}
static inline void writeq(unsigned int b, volatile void __iomem *addr)
{
*(volatile unsigned long long __force *) addr = b;
}
#define __raw_writeb writeb
#define __raw_writew writew
#define __raw_writel writel
#define __raw_writeq writeq
#endif