/* This file is based on: $XFree86: xc/programs/Xserver/hw/xfree86/etc/scanpci.c,v 3.34.2.17 1998/11/10 11:55:40 dawes Exp $ Modified for readability by Nick Kurshev */ #include #include #include #include #ifndef GCCUSESGAS #define GCCUSESGAS #endif static int io_fd; static __inline__ int enable_os_io(void) { io_fd = -1 ; #if !defined(USE_I386_IOPL) if ((io_fd = open("/dev/io", O_RDWR, 0)) < 0) { perror("/dev/io"); return(errno); } #else if (i386_iopl(1) < 0) { perror("i386_iopl"); return(errno); } #endif /* USE_I386_IOPL */ return(0); } static __inline__ int disable_os_io(void) { #if !defined(USE_I386_IOPL) close(io_fd); #else if (i386_iopl(0) < 0) { perror("i386_iopl"); return(errno); } #endif /* NetBSD1_1 */ return(0); }