isavar.h revision 41181 
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: isavar.h,v 1.1 1998/08/06 08:49:09 dfr Exp $
27 */
28
29#define	ISA_NPORT_IVARS	2
30#define	ISA_NMEM_IVARS	2
31#define	ISA_NIRQ_IVARS	2
32#define	ISA_NDRQ_IVARS	2
33
34enum isa_device_ivars {
35	ISA_IVAR_PORT,
36	ISA_IVAR_PORT_0 = ISA_IVAR_PORT,
37	ISA_IVAR_PORT_1,
38	ISA_IVAR_PORTSIZE,
39	ISA_IVAR_PORTSIZE_0 = ISA_IVAR_PORTSIZE,
40	ISA_IVAR_PORTSIZE_1,
41	ISA_IVAR_MADDR,
42	ISA_IVAR_MADDR_0 = ISA_IVAR_MADDR,
43	ISA_IVAR_MADDR_1,
44	ISA_IVAR_MSIZE,
45	ISA_IVAR_MSIZE_0 = ISA_IVAR_MSIZE,
46	ISA_IVAR_MSIZE_1,
47	ISA_IVAR_FLAGS,
48	ISA_IVAR_IRQ,
49	ISA_IVAR_IRQ_0 = ISA_IVAR_IRQ,
50	ISA_IVAR_IRQ_1,
51	ISA_IVAR_DRQ,
52	ISA_IVAR_DRQ_0 = ISA_IVAR_DRQ,
53	ISA_IVAR_DRQ_1
54};
55
56extern int isa_irq_pending(void);
57extern int isa_irq_mask(void);
58
59/*
60 * Simplified accessors for isa devices
61 */
62#define ISA_ACCESSOR(A, B, T)						\
63									\
64static __inline T isa_get_ ## A(device_t dev)				\
65{									\
66	u_long v;							\
67	BUS_READ_IVAR(device_get_parent(dev), dev, ISA_IVAR_ ## B, &v);	\
68	return (T) v;							\
69}									\
70									\
71static __inline void isa_set_ ## A(device_t dev, T t)			\
72{									\
73	u_long v = (u_long) t;						\
74	BUS_WRITE_IVAR(device_get_parent(dev), dev, ISA_IVAR_ ## B, v);	\
75}
76
77ISA_ACCESSOR(port, PORT, int)
78ISA_ACCESSOR(portsize, PORTSIZE, int)
79ISA_ACCESSOR(flags, FLAGS, int)
80ISA_ACCESSOR(irq, IRQ, int)
81
82