isavar.h revision 38136 
1/*-
2 * Copyright (c) 1998 Doug Rabson
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 *	$Id$
27 */
28
29enum isa_device_ivars {
30    ISA_IVAR_PORT,
31    ISA_IVAR_PORTSIZE,
32    ISA_IVAR_FLAGS,
33    ISA_IVAR_IRQ
34};
35
36extern int isa_irq_pending(void);
37extern int isa_irq_mask(void);
38
39/*
40 * Simplified accessors for isa devices
41 */
42#define ISA_ACCESSOR(A, B, T)						\
43									\
44static __inline T isa_get_ ## A(device_t dev)				\
45{									\
46	u_long v;							\
47	BUS_READ_IVAR(device_get_parent(dev), dev, ISA_IVAR_ ## B, &v);	\
48	return (T) v;							\
49}									\
50									\
51static __inline void isa_set_ ## A(device_t dev, T t)			\
52{									\
53	u_long v = (u_long) t;						\
54	BUS_WRITE_IVAR(device_get_parent(dev), dev, ISA_IVAR_ ## B, v);	\
55}
56
57ISA_ACCESSOR(port, PORT, int)
58ISA_ACCESSOR(portsize, PORTSIZE, int)
59ISA_ACCESSOR(flags, FLAGS, int)
60ISA_ACCESSOR(irq, IRQ, int)
61
62