xref: /freebsd/sys/isa/isavar.h (revision 380a989b3223d455375b4fae70fd0b9bdd43bafb)
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 
34 enum 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 
56 extern int isa_irq_pending(void);
57 extern int isa_irq_mask(void);
58 
59 /*
60  * Simplified accessors for isa devices
61  */
62 #define ISA_ACCESSOR(A, B, T)						\
63 									\
64 static __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 									\
71 static __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 
77 ISA_ACCESSOR(port, PORT, int)
78 ISA_ACCESSOR(portsize, PORTSIZE, int)
79 ISA_ACCESSOR(flags, FLAGS, int)
80 ISA_ACCESSOR(irq, IRQ, int)
81 
82