1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
|
#ifndef _ASM_IO_H
#define _ASM_IO_H
#include <xen/vmap.h>
#include <xen/types.h>
#include <asm/page.h>
#define readb(x) (*(volatile uint8_t *)(x))
#define readw(x) (*(volatile uint16_t *)(x))
#define readl(x) (*(volatile uint32_t *)(x))
#define readq(x) (*(volatile uint64_t *)(x))
#define writeb(d,x) (*(volatile uint8_t *)(x) = (d))
#define writew(d,x) (*(volatile uint16_t *)(x) = (d))
#define writel(d,x) (*(volatile uint32_t *)(x) = (d))
#define writeq(d,x) (*(volatile uint64_t *)(x) = (d))
#define __OUT1(s,x) \
static inline void out##s(unsigned x value, unsigned short port) {
#define __OUT2(s,s1,s2) \
__asm__ __volatile__ ("out" #s " %" s1 "0,%" s2 "1"
#define __OUT(s,s1,x) \
__OUT1(s,x) __OUT2(s,s1,"w") : : "a" (value), "Nd" (port)); } \
__OUT1(s##_p,x) __OUT2(s,s1,"w") : : "a" (value), "Nd" (port));}
#define __IN1(s) \
static inline RETURN_TYPE in##s(unsigned short port) { RETURN_TYPE _v;
#define __IN2(s,s1,s2) \
__asm__ __volatile__ ("in" #s " %" s2 "1,%" s1 "0"
#define __IN(s,s1,i...) \
__IN1(s) __IN2(s,s1,"w") : "=a" (_v) : "Nd" (port) ,##i ); return _v; } \
__IN1(s##_p) __IN2(s,s1,"w") : "=a" (_v) : "Nd" (port) ,##i ); return _v; }
#define RETURN_TYPE unsigned char
__IN(b,"")
#undef RETURN_TYPE
#define RETURN_TYPE unsigned short
__IN(w,"")
#undef RETURN_TYPE
#define RETURN_TYPE unsigned int
__IN(l,"")
#undef RETURN_TYPE
__OUT(b,"b",char)
__OUT(w,"w",short)
__OUT(l,,int)
extern void (*pv_post_outb_hook)(unsigned int port, u8 value);
/* Function pointer used to handle platform specific I/O port emulation. */
extern void (*ioemul_handle_quirk)(
u8 opcode, char *io_emul_stub, struct cpu_user_regs *regs);
#endif
|
