/* ----------------------------------------------------------------------- * * * 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 */