xnu-792.22.5.tar.gz

[apple/xnu.git] / EXTERNAL_HEADERS / architecture / i386 / pio.h

diff --git a/EXTERNAL_HEADERS/architecture/i386/pio.h b/EXTERNAL_HEADERS/architecture/i386/pio.h
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+/*
+ * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
+ * 
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
+ * 
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
+ * 
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ * 
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
+ */
+/*
+ * @OSF_COPYRIGHT@
+ */
+/* 
+ * Mach Operating System
+ * Copyright (c) 1991,1990 Carnegie Mellon University
+ * All Rights Reserved.
+ * 
+ * Permission to use, copy, modify and distribute this software and its
+ * documentation is hereby granted, provided that both the copyright
+ * notice and this permission notice appear in all copies of the
+ * software, derivative works or modified versions, and any portions
+ * thereof, and that both notices appear in supporting documentation.
+ * 
+ * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
+ * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
+ * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
+ * 
+ * Carnegie Mellon requests users of this software to return to
+ * 
+ *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
+ *  School of Computer Science
+ *  Carnegie Mellon University
+ *  Pittsburgh PA 15213-3890
+ * 
+ * any improvements or extensions that they make and grant Carnegie Mellon
+ * the rights to redistribute these changes.
+ */
+/* 
+ */
+#ifndef _ARCH_I386_PIO_H_
+#define _ARCH_I386_PIO_H_
+
+typedef unsigned short i386_ioport_t;
+
+#if defined(__GNUC__)
+static __inline__ unsigned long        inl(
+                               i386_ioport_t port)
+{
+       unsigned long datum;
+       __asm__ volatile("inl %w1, %0" : "=a" (datum) : "Nd" (port));
+       return(datum);
+}
+
+static __inline__ unsigned short inw(
+                               i386_ioport_t port)
+{
+       unsigned short datum;
+       __asm__ volatile("inw %w1, %w0" : "=a" (datum) : "Nd" (port));
+       return(datum);
+}
+
+static __inline__ unsigned char inb(
+                               i386_ioport_t port)
+{
+       unsigned char datum;
+       __asm__ volatile("inb %w1, %b0" : "=a" (datum) : "Nd" (port));
+       return(datum);
+}
+
+static __inline__ void outl(
+                               i386_ioport_t port,
+                               unsigned long datum)
+{
+       __asm__ volatile("outl %0, %w1" : : "a" (datum), "Nd" (port));
+}
+
+static __inline__ void outw(
+                               i386_ioport_t port,
+                               unsigned short datum)
+{
+       __asm__ volatile("outw %w0, %w1" : : "a" (datum), "Nd" (port));
+}
+
+static __inline__ void outb(
+                               i386_ioport_t port,
+                               unsigned char datum)
+{
+       __asm__ volatile("outb %b0, %w1" : : "a" (datum), "Nd" (port));
+}
+#endif /* defined(__GNUC__) */
+#endif /* _ARCH_I386_PIO_H_ */