RTEMS: bsps/i386/include/i386_io.h Source File

| RTEMS 5.4-rc2

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i386_io.h
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1
7/*
8 * Copyright (c) 2000 - Rosimildo da Silva. All Rights Reserved.
9 *
10 * MODULE DESCRIPTION:
11 *
12 * IO Functions for the PC platform equivalent to DOS/Linux. They make
13 * eaiser the porting of code from these platforms.
14 *
15 * by: Rosimildo da Silva: rdasilva@connecttel.com
16 *
17 */
18
26#ifndef i386_io_h__
27#define i386_io_h__
28
29#define rtems_inb(port) \
30({ \
31 register int _inb_result; \
32 \
33 __asm__ volatile ("xorl %%eax,%%eax; inb %%dx,%%al" : \
34 "=a" (_inb_result) : "d" (port)); \
35 _inb_result; \
36})
37
38#define rtems_inw(port) \
39({ \
40 register int _inbw_result; \
41 \
42 __asm__ volatile ("xorl %%eax,%%eax; inw %%dx,%%ax" : \
43 "=a" (_inbw_result) : "d" (port)); \
44 _inbw_result; \
45})
46
47#define rtems_outb(port, data) \
48 __asm__ volatile ("outb %%al,%%dx" : : "a" (data), "d" (port))
49
50#define rtems_outw(port, data) \
51 __asm__ volatile ("outw %%ax,%%dx" : : "a" (data), "d" (port))
52
53#define outp(port, val) rtems_outb(port,val)
54#define inp(port) rtems_inb(port)
55
56#define outb(val, port) rtems_outb(port,val)
57#define inb(port) rtems_inb(port)
58
59#define outb_p(val, port) rtems_outb(port,val)
60#define inb_p(port) rtems_inb(port)
61
62#define outportb(port,val) rtems_outb(port,val)
63#define inportb(port) rtems_inb(port)
64
65#define outw(val, port) rtems_outw(port,val)
66#define inw(port) rtems_inw(port)
67
68#define cli() __asm__ __volatile__("cli")
69#define sti() __asm__ __volatile__("sti");
70
71#endif /* i386_io_h__ */
72