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001 /* Copyright (C) 2004 All GPL'ed OS 001 /* Copyright (C) 2004 All GPL'ed OS 002 Copyright (C) 1999 Free Software Foundatio 002 Copyright (C) 1999 Free Software Foundation, Inc. 003 003 004 This program is free software; you can redi 004 This program is free software; you can redistribute it and/or 005 modify it under the terms of the GNU Genera 005 modify it under the terms of the GNU General Public License 006 as published by the Free Software Foundatio 006 as published by the Free Software Foundation; either version 2 007 of the License, or (at your option) any lat 007 of the License, or (at your option) any later version. 008 008 009 This program is distributed in the hope tha 009 This program is distributed in the hope that it will be useful, 010 but WITHOUT ANY WARRANTY; without even the 010 but WITHOUT ANY WARRANTY; without even the implied warranty of 011 MERCHANTABILITY or FITNESS FOR A PARTICULAR 011 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 012 GNU General Public License for more details 012 GNU General Public License for more details. 013 013 014 You should have received a copy of the GNU 014 You should have received a copy of the GNU General Public License 015 along with this program; if not, write to t 015 along with this program; if not, write to the Free Software 016 Foundation, Inc., 59 Temple Place - Suite 3 016 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 017 USA. 017 USA. 018 */ 018 */ 019 #ifndef _SOS_IOPORTS_H_ 019 #ifndef _SOS_IOPORTS_H_ 020 #define _SOS_IOPORTS_H_ 020 #define _SOS_IOPORTS_H_ 021 021 022 /** 022 /** 023 * @ioports.h 023 * @ioports.h 024 * 024 * 025 * Intel-specific I/O space access routines. 025 * Intel-specific I/O space access routines. 026 */ 026 */ 027 027 028 /* This macro allows to write to an I/O port * 028 /* This macro allows to write to an I/O port */ 029 #define outb(value, port) 029 #define outb(value, port) \ 030 __asm__ volatile ( 030 __asm__ volatile ( \ 031 "outb %b0,%w1" 031 "outb %b0,%w1" \ 032 ::"a" (value),"Nd" (port) 032 ::"a" (value),"Nd" (port) \ 033 ) 033 ) \ 034 034 035 // read one byte from port 035 // read one byte from port 036 #define inb(port) 036 #define inb(port) \ 037 ({ 037 ({ \ 038 unsigned char _v; 038 unsigned char _v; \ 039 __asm__ volatile ( 039 __asm__ volatile ( \ 040 "inb %w1,%0" 040 "inb %w1,%0" \ 041 :"=a" (_v) 041 :"=a" (_v) \ 042 :"Nd" (port) 042 :"Nd" (port) \ 043 ); 043 ); \ 044 _v; 044 _v; \ 045 }) 045 }) 046 046 047 #endif /* _SOS_IOPORTS_H_ */ 047 #endif /* _SOS_IOPORTS_H_ */
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