projects / mirror_ubuntu-artful-kernel.git / blame
| 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 | ||
| ea1eae75 JD |
36 | static inline void writeb(unsigned char b, volatile void __iomem *addr) |
| 37 | { | |
| 38 | *(volatile unsigned char __force *) addr = b; | |
| 39 | } | |
| 40 | static inline void writew(unsigned short b, volatile void __iomem *addr) | |
| 41 | { | |
| 42 | *(volatile unsigned short __force *) addr = b; | |
| 43 | } | |
| 44 | static inline void writel(unsigned int b, volatile void __iomem *addr) | |
| 45 | { | |
| 46 | *(volatile unsigned int __force *) addr = b; | |
| 47 | } | |
| 48 | #define __raw_writeb writeb | |
| 49 | #define __raw_writew writew | |
| 50 | #define __raw_writel writel | |
| 51 | ||
| 1da177e4 | 52 | #endif |