| /* 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 */ |