| #ident "$Id: io.h,v 1.1 2004/01/25 01:34:29 hpa Exp $" |
| /* ----------------------------------------------------------------------- * |
| * |
| * Copyright 2004 H. Peter Anvin - All Rights Reserved |
| * |
| * Permission is hereby granted, free of charge, to any person |
| * obtaining a copy of this software and associated documentation |
| * files (the "Software"), to deal in the Software without |
| * restriction, including without limitation the rights to use, |
| * copy, modify, merge, publish, distribute, sublicense, and/or |
| * sell copies of the Software, and to permit persons to whom |
| * the Software is furnished to do so, subject to the following |
| * conditions: |
| * |
| * The above copyright notice and this permission notice shall |
| * be included in all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES |
| * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT |
| * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, |
| * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| * OTHER DEALINGS IN THE SOFTWARE. |
| * |
| * ----------------------------------------------------------------------- */ |
| |
| /* |
| * sys/io.h for the i386 architecture |
| * |
| * Basic I/O macros |
| */ |
| |
| #ifndef _SYS_IO_H |
| #define _SYS_IO_H 1 |
| |
| /* I/O-related system calls */ |
| |
| int iopl(int); |
| int ioperm(unsigned long, unsigned long, int); |
| |
| /* Basic I/O macros */ |
| |
| static __inline__ void |
| outb(unsigned char __v, unsigned short __p) |
| { |
| asm volatile("outb %0,%1" : : "a" (__v), "dN" (__p)); |
| } |
| |
| static __inline__ void |
| outw(unsigned short __v, unsigned short __p) |
| { |
| asm volatile("outw %0,%1" : : "a" (__v), "dN" (__p)); |
| } |
| |
| static __inline__ void |
| outl(unsigned int __v, unsigned short __p) |
| { |
| asm volatile("outl %0,%1" : : "a" (__v), "dN" (__p)); |
| } |
| |
| static __inline__ unsigned char |
| inb(unsigned short __p) |
| { |
| unsigned char __v; |
| asm volatile("inb %1,%0" : "=a" (__v) : "dN" (__p)); |
| return v; |
| } |
| |
| static __inline__ unsigned short |
| inw(unsigned short __p) |
| { |
| unsigned short __v; |
| asm volatile("inw %1,%0" : "=a" (__v) : "dN" (__p)); |
| return v; |
| } |
| |
| static __inline__ unsigned int |
| inl(unsigned short __p) |
| { |
| unsigned int __v; |
| asm volatile("inl %1,%0" : "=a" (__v) : "dN" (__p)); |
| return v; |
| } |
| |
| /* String I/O macros */ |
| |
| static __inline__ void |
| outsb (unsigned short __p, const void *__d, unsigned long __n) |
| { |
| asm volatile("cld; rep; outsb" : "+S" (__d), "+c" (__n) : "d" (__p)); |
| } |
| |
| static __inline__ void |
| outsw (unsigned short __p, const void *__d, unsigned long __n) |
| { |
| asm volatile("cld; rep; outsw" : "+S" (__d), "+c" (__n) : "d" (__p)); |
| } |
| |
| static __inline__ void |
| outsl (unsigned short __p, const void *__d, unsigned long __n) |
| { |
| asm volatile("cld; rep; outsl" : "+S" (__d), "+c" (__n) : "d" (__p)); |
| } |
| |
| |
| static __inline__ void |
| insb (unsigned short __p, void *__d, unsigned long __n) |
| { |
| asm volatile("cld; rep; insb" : "+D" (__d), "+c" (__n) : "d" (__p)); |
| } |
| |
| static __inline__ void |
| insw (unsigned short __p, void *__d, unsigned long __n) |
| { |
| asm volatile("cld; rep; insw" : "+D" (__d), "+c" (__n) : "d" (__p)); |
| } |
| |
| static __inline__ void |
| insl (unsigned short __p, void *__d, unsigned long __n) |
| { |
| asm volatile("cld; rep; insl" : "+D" (__d), "+c" (__n) : "d" (__p)); |
| } |
| |
| #endif /* _SYS_IO_H */ |