diff options
| author |   Yang Zhang <yang.z.zhang@intel.com> | 2015-08-28 09:58:54 +0800 |
|---|---|---|
| committer | Yang Zhang <yang.z.zhang@intel.com> | 2015-09-01 12:44:00 +0800 |
| commit | e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb (patch) | |
| tree | 66b09f592c55df2878107a468a91d21506104d3f /qemu/roms/openbios/include/arch/amd64/io.h | |
| parent | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (diff) | |
Add qemu 2.4.0
Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5
Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>
Diffstat (limited to 'qemu/roms/openbios/include/arch/amd64/io.h')
| -rw-r--r-- | qemu/roms/openbios/include/arch/amd64/io.h | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/qemu/roms/openbios/include/arch/amd64/io.h b/qemu/roms/openbios/include/arch/amd64/io.h new file mode 100644 index 000000000..9be1cb857 --- /dev/null +++ b/qemu/roms/openbios/include/arch/amd64/io.h @@ -0,0 +1,71 @@ +#ifndef _ASM_IO_H +#define _ASM_IO_H + +extern char _start, _end; +extern unsigned long virt_offset; + +#define phys_to_virt(phys) ((void *) ((unsigned long) (phys) - virt_offset)) +#define virt_to_phys(virt) ((unsigned long) (virt) + virt_offset) + +#ifndef BOOTSTRAP + +#define __SLOW_DOWN_IO "outb %%al,$0x80;" +static inline void slow_down_io(void) +{ + __asm__ __volatile__( + __SLOW_DOWN_IO +#ifdef REALLY_SLOW_IO + __SLOW_DOWN_IO __SLOW_DOWN_IO __SLOW_DOWN_IO +#endif + : : ); +} + +#define BUILDIO(bwl,bw,type) \ +static inline void out##bwl(unsigned type value, int port) { \ + __asm__ __volatile__("out" #bwl " %" #bw "0, %w1" : : "a"(value), "Nd"(port)); \ +} \ +static inline unsigned type in##bwl(int port) { \ + unsigned type value; \ + __asm__ __volatile__("in" #bwl " %w1, %" #bw "0" : "=a"(value) : "Nd"(port)); \ + return value; \ +} \ +static inline void out##bwl##_p(unsigned type value, int port) { \ + out##bwl(value, port); \ + slow_down_io(); \ +} \ +static inline unsigned type in##bwl##_p(int port) { \ + unsigned type value = in##bwl(port); \ + slow_down_io(); \ + return value; \ +} \ +static inline void outs##bwl(int port, const void *addr, unsigned long count) { \ + __asm__ __volatile__("rep; outs" #bwl : "+S"(addr), "+c"(count) : "d"(port)); \ +} \ +static inline void ins##bwl(int port, void *addr, unsigned long count) { \ + __asm__ __volatile__("rep; ins" #bwl : "+D"(addr), "+c"(count) : "d"(port)); \ +} + +BUILDIO(b,b,char) +BUILDIO(w,w,short) +BUILDIO(l,,int) + +#else /* BOOTSTRAP */ +#ifdef FCOMPILER +#define inb(reg) ((u8)0xff) +#define inw(reg) ((u16)0xffff) +#define inl(reg) ((u32)0xffffffff) +#define outb(reg, val) do{} while(0) +#define outw(reg, val) do{} while(0) +#define outl(reg, val) do{} while(0) +#else +extern u8 inb(u32 reg); +extern u16 inw(u32 reg); +extern u32 inl(u32 reg); +extern void insw(u32 reg, void *addr, unsigned long count); +extern void outb(u32 reg, u8 val); +extern void outw(u32 reg, u16 val); +extern void outl(u32 reg, u32 val); +extern void outsw(u32 reg, const void *addr, unsigned long count); +#endif +#endif +#endif |