2002-04-02 04:43:06 +00:00
|
|
|
/* Access to hardware i/o ports. GNU/x86 version.
|
|
|
|
Copyright (C) 2002 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 Lesser General Public
|
|
|
|
License as published by the Free Software Foundation; either
|
|
|
|
version 2.1 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
|
|
|
|
Lesser General Public License for more details.
|
|
|
|
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
2012-02-09 23:18:22 +00:00
|
|
|
License along with the GNU C Library; if not, see
|
|
|
|
<http://www.gnu.org/licenses/>. */
|
2002-04-02 04:43:06 +00:00
|
|
|
|
|
|
|
#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. */
|
|
|
|
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;
|
|
|
|
|
|
|
|
#if defined __GNUC__ && __GNUC__ >= 2
|
|
|
|
|
|
|
|
static __inline unsigned char
|
|
|
|
inb (unsigned short int port)
|
|
|
|
{
|
|
|
|
unsigned char _v;
|
|
|
|
|
|
|
|
__asm__ __volatile__ ("inb %w1,%0":"=a" (_v):"Nd" (port));
|
|
|
|
return _v;
|
|
|
|
}
|
|
|
|
|
|
|
|
static __inline unsigned char
|
|
|
|
inb_p (unsigned short int port)
|
|
|
|
{
|
|
|
|
unsigned char _v;
|
|
|
|
|
|
|
|
__asm__ __volatile__ ("inb %w1,%0\noutb %%al,$0x80":"=a" (_v):"Nd" (port));
|
|
|
|
return _v;
|
|
|
|
}
|
|
|
|
|
|
|
|
static __inline unsigned short int
|
|
|
|
inw (unsigned short int port)
|
|
|
|
{
|
|
|
|
unsigned short _v;
|
|
|
|
|
|
|
|
__asm__ __volatile__ ("inw %w1,%0":"=a" (_v):"Nd" (port));
|
|
|
|
return _v;
|
|
|
|
}
|
|
|
|
|
|
|
|
static __inline unsigned short int
|
|
|
|
inw_p (unsigned short int port)
|
|
|
|
{
|
|
|
|
unsigned short int _v;
|
|
|
|
|
|
|
|
__asm__ __volatile__ ("inw %w1,%0\noutb %%al,$0x80":"=a" (_v):"Nd" (port));
|
|
|
|
return _v;
|
|
|
|
}
|
|
|
|
|
|
|
|
static __inline unsigned int
|
|
|
|
inl (unsigned short int port)
|
|
|
|
{
|
|
|
|
unsigned int _v;
|
|
|
|
|
|
|
|
__asm__ __volatile__ ("inl %w1,%0":"=a" (_v):"Nd" (port));
|
|
|
|
return _v;
|
|
|
|
}
|
|
|
|
|
|
|
|
static __inline unsigned int
|
|
|
|
inl_p (unsigned short int port)
|
|
|
|
{
|
|
|
|
unsigned int _v;
|
|
|
|
__asm__ __volatile__ ("inl %w1,%0\noutb %%al,$0x80":"=a" (_v):"Nd" (port));
|
|
|
|
return _v;
|
|
|
|
}
|
|
|
|
|
|
|
|
static __inline void
|
|
|
|
outb (unsigned char value, unsigned short int port)
|
|
|
|
{
|
|
|
|
__asm__ __volatile__ ("outb %b0,%w1": :"a" (value), "Nd" (port));
|
|
|
|
}
|
|
|
|
|
|
|
|
static __inline void
|
|
|
|
outb_p (unsigned char value, unsigned short int port)
|
|
|
|
{
|
|
|
|
__asm__ __volatile__ ("outb %b0,%w1\noutb %%al,$0x80": :"a" (value),
|
|
|
|
"Nd" (port));
|
|
|
|
}
|
|
|
|
|
|
|
|
static __inline void
|
|
|
|
outw (unsigned short int value, unsigned short int port)
|
|
|
|
{
|
|
|
|
__asm__ __volatile__ ("outw %w0,%w1": :"a" (value), "Nd" (port));
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
static __inline void
|
|
|
|
outw_p (unsigned short int value, unsigned short int port)
|
|
|
|
{
|
|
|
|
__asm__ __volatile__ ("outw %w0,%w1\noutb %%al,$0x80": :"a" (value),
|
|
|
|
"Nd" (port));
|
|
|
|
}
|
|
|
|
|
|
|
|
static __inline void
|
|
|
|
outl (unsigned int value, unsigned short int port)
|
|
|
|
{
|
|
|
|
__asm__ __volatile__ ("outl %0,%w1": :"a" (value), "Nd" (port));
|
|
|
|
}
|
|
|
|
|
|
|
|
static __inline void
|
|
|
|
outl_p (unsigned int value, unsigned short int port)
|
|
|
|
{
|
|
|
|
__asm__ __volatile__ ("outl %0,%w1\noutb %%al,$0x80": :"a" (value),
|
|
|
|
"Nd" (port));
|
|
|
|
}
|
|
|
|
|
|
|
|
static __inline void
|
|
|
|
insb (unsigned short int port, void *addr, unsigned long int count)
|
|
|
|
{
|
|
|
|
__asm__ __volatile__ ("cld ; rep ; insb":"=D" (addr),
|
|
|
|
"=c" (count):"d" (port), "0" (addr), "1" (count));
|
|
|
|
}
|
|
|
|
|
|
|
|
static __inline void
|
|
|
|
insw (unsigned short int port, void *addr, unsigned long int count)
|
|
|
|
{
|
|
|
|
__asm__ __volatile__ ("cld ; rep ; insw":"=D" (addr),
|
|
|
|
"=c" (count):"d" (port), "0" (addr), "1" (count));
|
|
|
|
}
|
|
|
|
|
|
|
|
static __inline void
|
|
|
|
insl (unsigned short int port, void *addr, unsigned long int count)
|
|
|
|
{
|
|
|
|
__asm__ __volatile__ ("cld ; rep ; insl":"=D" (addr),
|
|
|
|
"=c" (count):"d" (port), "0" (addr), "1" (count));
|
|
|
|
}
|
|
|
|
|
|
|
|
static __inline void
|
|
|
|
outsb (unsigned short int port, const void *addr, unsigned long int count)
|
|
|
|
{
|
|
|
|
__asm__ __volatile__ ("cld ; rep ; outsb":"=S" (addr),
|
|
|
|
"=c" (count):"d" (port), "0" (addr), "1" (count));
|
|
|
|
}
|
|
|
|
|
|
|
|
static __inline void
|
|
|
|
outsw (unsigned short int port, const void *addr, unsigned long int count)
|
|
|
|
{
|
|
|
|
__asm__ __volatile__ ("cld ; rep ; outsw":"=S" (addr),
|
|
|
|
"=c" (count):"d" (port), "0" (addr), "1" (count));
|
|
|
|
}
|
|
|
|
|
|
|
|
static __inline void
|
|
|
|
outsl (unsigned short int port, const void *addr, unsigned long int count)
|
|
|
|
{
|
|
|
|
__asm__ __volatile__ ("cld ; rep ; outsl":"=S" (addr),
|
|
|
|
"=c" (count):"d" (port), "0" (addr), "1" (count));
|
|
|
|
}
|
|
|
|
|
|
|
|
#endif /* GNU C */
|
|
|
|
|
|
|
|
__END_DECLS
|
|
|
|
#endif /* _SYS_IO_H */
|