6 extern char _start, _end;
7 extern unsigned long virt_offset;
9 #define phys_to_virt(phys) ((void *) ((unsigned long) (phys) - virt_offset))
10 #define virt_to_phys(virt) ((unsigned long) (virt) + virt_offset)
13 #define __SLOW_DOWN_IO "outb %%al,$0x80;"
14 static inline void slow_down_io(void)
19 __SLOW_DOWN_IO __SLOW_DOWN_IO __SLOW_DOWN_IO
24 #define BUILDIO(bwl,bw,type) \
25 static inline void out##bwl(unsigned type value, int port) { \
26 __asm__ __volatile__("out" #bwl " %" #bw "0, %w1" : : "a"(value), "Nd"(port)); \
28 static inline unsigned type in##bwl(int port) { \
29 unsigned type value; \
30 __asm__ __volatile__("in" #bwl " %w1, %" #bw "0" : "=a"(value) : "Nd"(port)); \
33 static inline void out##bwl##_p(unsigned type value, int port) { \
34 out##bwl(value, port); \
37 static inline unsigned type in##bwl##_p(int port) { \
38 unsigned type value = in##bwl(port); \
42 static inline void outs##bwl(int port, const void *addr, unsigned long count) { \
43 __asm__ __volatile__("rep; outs" #bwl : "+S"(addr), "+c"(count) : "d"(port)); \
45 static inline void ins##bwl(int port, void *addr, unsigned long count) { \
46 __asm__ __volatile__("rep; ins" #bwl : "+D"(addr), "+c"(count) : "d"(port)); \
57 #define inb(reg) ((u8)0xff)
58 #define inw(reg) ((u16)0xffff)
59 #define inl(reg) ((u32)0xffffffff)
60 #define outb(reg, val) do{} while(0)
61 #define outw(reg, val) do{} while(0)
62 #define outl(reg, val) do{} while(0)
64 extern u8 inb(u32 reg);
65 extern u16 inw(u32 reg);
66 extern u32 inl(u32 reg);
67 extern void insw(u32 reg, void *addr, unsigned long count);
68 extern void outb(u32 reg, u8 val);
69 extern void outw(u32 reg, u16 val);
70 extern void outl(u32 reg, u32 val);
71 extern void outsw(u32 reg, const void *addr, unsigned long count);