xref: /netbsd-src/sys/arch/alpha/include/pio.h (revision eacc5f97c950c6d7d4f75a36e7874d813724ae95)
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