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pio.h revision 1.4 
      1 /*	$NetBSD: pio.h,v 1.4 2000/06/08 03:10:06 thorpej Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2000 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Jason R. Thorpe.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *	This product includes software developed by the NetBSD
     21  *	Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 #ifndef _ALPHA_PIO_H_
     40 #define	_ALPHA_PIO_H_
     41 
     42 #include <machine/bus.h>
     43 
     44 #ifdef _KERNEL
     45 #error This file is for userspace only.
     46 #else
     47 struct alpha_pci_io_ops {
     48 	u_int8_t	(*apio_inb)(bus_addr_t);
     49 	u_int16_t	(*apio_inw)(bus_addr_t);
     50 	u_int32_t	(*apio_inl)(bus_addr_t);
     51 	void		(*apio_outb)(bus_addr_t, u_int8_t);
     52 	void		(*apio_outw)(bus_addr_t, u_int16_t);
     53 	void		(*apio_outl)(bus_addr_t, u_int32_t);
     54 };
     55 
     56 extern const struct alpha_pci_io_ops *alpha_pci_io_switch;
     57 
     58 #define	inb(addr)	(*alpha_pci_io_switch->apio_inb)((addr))
     59 #define	inw(addr)	(*alpha_pci_io_switch->apio_inw)((addr))
     60 #define	inl(addr)	(*alpha_pci_io_switch->apio_inl)((addr))
     61 
     62 #define	outb(addr, val)	(*alpha_pci_io_switch->apio_outb)((addr), (val))
     63 #define	outw(addr, val)	(*alpha_pci_io_switch->apio_outw)((addr), (val))
     64 #define	ouwl(addr, val)	(*alpha_pci_io_switch->apio_outl)((addr), (val))
     65 
     66 int	alpha_pci_io_enable(int);
     67 #endif /* _KERNEL */
     68 
     69 #endif /* _ALPHA_PIO_H_ */
     70