179 lines
4.7 KiB
C
179 lines
4.7 KiB
C
/* Copyright (C) 1996, 2000 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Library General Public License as
|
|
published by the Free Software Foundation; either version 2 of the
|
|
License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If not,
|
|
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
#ifndef _SYS_IO_H
|
|
#define _SYS_IO_H 1
|
|
|
|
#include <features.h>
|
|
|
|
__BEGIN_DECLS
|
|
|
|
/* If TURN_ON is TRUE, request for permission to do direct i/o on the
|
|
port numbers in the range [FROM,FROM+NUM-1]. Otherwise, turn I/O
|
|
permission off for that range. This call requires root privileges.
|
|
|
|
Portability note: not all Linux platforms support this call. Most
|
|
platforms based on the PC I/O architecture probably will, however.
|
|
E.g., Linux/Alpha for Alpha PCs supports this. */
|
|
extern int ioperm (unsigned long int __from, unsigned long int __num,
|
|
int __turn_on) __THROW;
|
|
|
|
/* Set the I/O privilege level to LEVEL. If LEVEL>3, permission to
|
|
access any I/O port is granted. This call requires root
|
|
privileges. */
|
|
extern int iopl (int __level) __THROW;
|
|
|
|
|
|
extern inline unsigned char
|
|
inb (unsigned short port)
|
|
{
|
|
unsigned char _v;
|
|
|
|
__asm__ __volatile__ ("inb %w1,%0":"=a" (_v):"Nd" (port));
|
|
return _v;
|
|
}
|
|
|
|
extern inline unsigned char
|
|
inb_p (unsigned short port)
|
|
{
|
|
unsigned char _v;
|
|
|
|
__asm__ __volatile__ ("inb %w1,%0\noutb %%al,$0x80":"=a" (_v):"Nd" (port));
|
|
return _v;
|
|
}
|
|
|
|
extern inline unsigned short
|
|
inw (unsigned short port)
|
|
{
|
|
unsigned short _v;
|
|
|
|
__asm__ __volatile__ ("inw %w1,%0":"=a" (_v):"Nd" (port));
|
|
return _v;
|
|
}
|
|
|
|
extern inline unsigned short
|
|
inw_p (unsigned short port)
|
|
{
|
|
unsigned short _v;
|
|
|
|
__asm__ __volatile__ ("inw %w1,%0\noutb %%al,$0x80":"=a" (_v):"Nd" (port));
|
|
return _v;
|
|
}
|
|
|
|
extern inline unsigned int
|
|
inl (unsigned short port)
|
|
{
|
|
unsigned int _v;
|
|
|
|
__asm__ __volatile__ ("inl %w1,%0":"=a" (_v):"Nd" (port));
|
|
return _v;
|
|
}
|
|
|
|
extern inline unsigned int
|
|
inl_p (unsigned short port)
|
|
{
|
|
unsigned int _v;
|
|
__asm__ __volatile__ ("inl %w1,%0\noutb %%al,$0x80":"=a" (_v):"Nd" (port));
|
|
return _v;
|
|
}
|
|
|
|
extern inline void
|
|
outb (unsigned char value, unsigned short port)
|
|
{
|
|
__asm__ __volatile__ ("outb %b0,%w1"::"a" (value), "Nd" (port));
|
|
}
|
|
|
|
extern inline void
|
|
outb_p (unsigned char value, unsigned short port)
|
|
{
|
|
__asm__ __volatile__ ("outb %b0,%w1\noutb %%al,$0x80"::"a" (value),
|
|
"Nd" (port));
|
|
}
|
|
|
|
extern inline void
|
|
outw (unsigned short value, unsigned short port)
|
|
{
|
|
__asm__ __volatile__ ("outw %w0,%w1"::"a" (value), "Nd" (port));
|
|
|
|
}
|
|
|
|
extern inline void
|
|
outw_p (unsigned short value, unsigned short port)
|
|
{
|
|
__asm__ __volatile__ ("outw %w0,%w1\noutb %%al,$0x80"::"a" (value),
|
|
"Nd" (port));
|
|
}
|
|
|
|
extern inline void
|
|
outl (unsigned int value, unsigned short port)
|
|
{
|
|
__asm__ __volatile__ ("outl %0,%w1"::"a" (value), "Nd" (port));
|
|
}
|
|
|
|
extern inline void
|
|
outl_p (unsigned int value, unsigned short port)
|
|
{
|
|
__asm__ __volatile__ ("outl %0,%w1\noutb %%al,$0x80"::"a" (value),
|
|
"Nd" (port));
|
|
}
|
|
|
|
extern inline void
|
|
insb (unsigned short port, void *addr, unsigned long count)
|
|
{
|
|
__asm__ __volatile__ ("cld ; rep ; insb":"=D" (addr),
|
|
"=c" (count):"d" (port), "0" (addr), "1" (count));
|
|
}
|
|
|
|
extern inline void
|
|
insw (unsigned short port, void *addr, unsigned long count)
|
|
{
|
|
__asm__ __volatile__ ("cld ; rep ; insw":"=D" (addr),
|
|
"=c" (count):"d" (port), "0" (addr), "1" (count));
|
|
}
|
|
|
|
extern inline void
|
|
insl (unsigned short port, void *addr, unsigned long count)
|
|
{
|
|
__asm__ __volatile__ ("cld ; rep ; insl":"=D" (addr),
|
|
"=c" (count):"d" (port), "0" (addr), "1" (count));
|
|
}
|
|
|
|
extern inline void
|
|
outsb (unsigned short port, const void *addr, unsigned long count)
|
|
{
|
|
__asm__ __volatile__ ("cld ; rep ; outsb":"=S" (addr),
|
|
"=c" (count):"d" (port), "0" (addr), "1" (count));
|
|
}
|
|
|
|
extern inline void
|
|
outsw (unsigned short port, const void *addr, unsigned long count)
|
|
{
|
|
__asm__ __volatile__ ("cld ; rep ; outsw":"=S" (addr),
|
|
"=c" (count):"d" (port), "0" (addr), "1" (count));
|
|
}
|
|
|
|
extern inline void
|
|
outsl (unsigned short port, const void *addr, unsigned long count)
|
|
{
|
|
__asm__ __volatile__ ("cld ; rep ; outsl":"=S" (addr),
|
|
"=c" (count):"d" (port), "0" (addr), "1" (count));
|
|
}
|
|
|
|
__END_DECLS
|
|
#endif /* _SYS_IO_H */
|