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      1 /*	$NetBSD: pio.h,v 1.10 2012/02/06 02:14:13 matt 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  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #ifndef _ALPHA_PIO_H_
     33 #define	_ALPHA_PIO_H_
     34 
     35 #include <sys/cdefs.h>
     36 #include <machine/bus_user.h>
     37 
     38 #ifdef _KERNEL
     39 #error This file is for userspace only.
     40 #else
     41 struct alpha_pci_io_ops {
     42 	uint8_t	(*apio_inb)(bus_addr_t);
     43 	uint16_t	(*apio_inw)(bus_addr_t);
     44 	uint32_t	(*apio_inl)(bus_addr_t);
     45 	void		(*apio_outb)(bus_addr_t, uint8_t);
     46 	void		(*apio_outw)(bus_addr_t, uint16_t);
     47 	void		(*apio_outl)(bus_addr_t, uint32_t);
     48 };
     49 
     50 #define	inb(addr)	(*alpha_pci_io_switch->apio_inb)((addr))
     51 #define	inw(addr)	(*alpha_pci_io_switch->apio_inw)((addr))
     52 #define	inl(addr)	(*alpha_pci_io_switch->apio_inl)((addr))
     53 
     54 #define	outb(addr, val)	(*alpha_pci_io_switch->apio_outb)((addr), (val))
     55 #define	outw(addr, val)	(*alpha_pci_io_switch->apio_outw)((addr), (val))
     56 #define	outl(addr, val)	(*alpha_pci_io_switch->apio_outl)((addr), (val))
     57 
     58 __BEGIN_DECLS
     59 extern const struct alpha_pci_io_ops *alpha_pci_io_switch;
     60 
     61 int	alpha_pci_io_enable(int);
     62 __END_DECLS
     63 #endif /* _KERNEL */
     64 
     65 #endif /* _ALPHA_PIO_H_ */
     66