/* Copyright (C) 1999, 2000 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by David Mosberger-Tang <davidm@hpl.hp.com> 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 License along with the GNU C Library; 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); /* 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); extern unsigned int _inb (unsigned long int __port); extern unsigned int _inb (unsigned long int __port); extern unsigned int _inw (unsigned long int __port); extern unsigned int _inl (unsigned long int __port); extern void _outb (unsigned char __val, unsigned long int __port); extern void _outw (unsigned short __val, unsigned long int __port); extern void _outl (unsigned int __val, unsigned long int __port); #define inb _inb #define inw _inw #define inl _inl #define outb _outb #define outw _outw #define outl _outl /* Access PCI space protected from machine checks. */ extern int pciconfig_read (unsigned long int __bus, unsigned long int __dfn, unsigned long int __off, unsigned long int __len, unsigned char *__buf); extern int pciconfig_write (unsigned long int __bus, unsigned long int __dfn, unsigned long int __off, unsigned long int __len, unsigned char *__buf); __END_DECLS #endif /* _SYS_IO_H */