projects / thirdparty / glibc.git / blame
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1 | /* Copyright (C) 1999, 2000 Free Software Foundation, Inc. |
| 2 | This file is part of the GNU C Library. | |
| 3 | Contributed by David Mosberger-Tang <davidm@hpl.hp.com> | |
| 4 | ||
| 5 | The GNU C Library is free software; you can redistribute it and/or | |
| 41bdb6e2 AJ |
6 | modify it under the terms of the GNU Lesser General Public |
| 7 | License as published by the Free Software Foundation; either | |
| 8 | version 2.1 of the License, or (at your option) any later version. | |
| 131bf9f3 UD |
9 | |
| 10 | The GNU C Library is distributed in the hope that it will be useful, | |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 41bdb6e2 | 13 | Lesser General Public License for more details. |
| 131bf9f3 | 14 | |
| 41bdb6e2 AJ |
15 | You should have received a copy of the GNU Lesser General Public |
| 16 | License along with the GNU C Library; if not, write to the Free | |
| 17 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
| 18 | 02111-1307 USA. */ | |
| 131bf9f3 UD |
19 | |
| 20 | #ifndef _SYS_IO_H | |
| 21 | #define _SYS_IO_H 1 | |
| 22 | ||
| 23 | #include <features.h> | |
| 24 | ||
| 25 | __BEGIN_DECLS | |
| 26 | ||
| 27 | /* If TURN_ON is TRUE, request for permission to do direct i/o on the | |
| 28 | port numbers in the range [FROM,FROM+NUM-1]. Otherwise, turn I/O | |
| 29 | permission off for that range. This call requires root privileges. | |
| 30 | ||
| 31 | Portability note: not all Linux platforms support this call. Most | |
| 32 | platforms based on the PC I/O architecture probably will, however. | |
| 33 | E.g., Linux/Alpha for Alpha PCs supports this. */ | |
| 34 | extern int ioperm (unsigned long int __from, unsigned long int __num, | |
| 35 | int __turn_on); | |
| 36 | ||
| 37 | /* Set the I/O privilege level to LEVEL. If LEVEL>3, permission to | |
| 38 | access any I/O port is granted. This call requires root | |
| 39 | privileges. */ | |
| 40 | extern int iopl (int __level); | |
| 41 | ||
| 42 | extern unsigned int _inb (unsigned long int __port); | |
| 43 | extern unsigned int _inb (unsigned long int __port); | |
| 44 | extern unsigned int _inw (unsigned long int __port); | |
| 45 | extern unsigned int _inl (unsigned long int __port); | |
| 46 | extern void _outb (unsigned char __val, unsigned long int __port); | |
| 47 | extern void _outw (unsigned short __val, unsigned long int __port); | |
| 48 | extern void _outl (unsigned int __val, unsigned long int __port); | |
| 49 | ||
| 50 | #define inb _inb | |
| 51 | #define inw _inw | |
| 52 | #define inl _inl | |
| 53 | #define outb _outb | |
| 54 | #define outw _outw | |
| 55 | #define outl _outl | |
| 56 | ||
| 57 | /* Access PCI space protected from machine checks. */ | |
| 58 | extern int pciconfig_read (unsigned long int __bus, unsigned long int __dfn, | |
| 59 | unsigned long int __off, unsigned long int __len, | |
| 60 | unsigned char *__buf); | |
| 61 | ||
| 62 | extern int pciconfig_write (unsigned long int __bus, unsigned long int __dfn, | |
| 63 | unsigned long int __off, unsigned long int __len, | |
| 64 | unsigned char *__buf); | |
| 65 | ||
| 66 | __END_DECLS | |
| 67 | ||
| 68 | #endif /* _SYS_IO_H */ |