isavar.h revision 51052 
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 * $FreeBSD: head/sys/isa/isavar.h 51052 1999-09-07 08:42:49Z dfr $
27 */
28
29#ifndef _ISA_ISAVAR_H_
30#define _ISA_ISAVAR_H_
31
32struct isa_config;
33struct isa_pnp_id;
34typedef void isa_config_cb(void *arg, struct isa_config *config, int enable);
35
36#include "isa_if.h"
37#include <isa/pnpvar.h>
38
39#ifdef KERNEL
40
41/*
42 * ISA devices are partially ordered to ensure that devices which are
43 * sensitive to other driver probe routines are probed first. Plug and
44 * Play devices are added after devices with speculative probes so that
45 * the legacy hardware can claim resources allowing the Plug and Play
46 * hardware to choose different resources.
47 */
48#define ISA_ORDER_SENSITIVE	0 /* legacy sensitive hardware */
49#define ISA_ORDER_SPECULATIVE	1 /* legacy non-sensitive hardware */
50#define ISA_ORDER_PNP		2 /* plug-and-play hardware */
51
52#define	ISA_NPORT	8
53#define	ISA_NMEM	4
54#define	ISA_NIRQ	2
55#define	ISA_NDRQ	2
56
57/*
58 * Plug and play cards can support a range of resource
59 * configurations. This structure is used by the isapnp parser to
60 * inform the isa bus about the resource possibilities of the
61 * device. Each different alternative should be supplied by calling
62 * ISA_ADD_CONFIG().
63 */
64struct isa_range {
65	u_int32_t		ir_start;
66	u_int32_t		ir_end;
67	u_int32_t		ir_size;
68	u_int32_t		ir_align;
69};
70
71struct isa_config {
72	struct isa_range	ic_mem[ISA_NMEM];
73	struct isa_range	ic_port[ISA_NPORT];
74	u_int32_t		ic_irqmask[ISA_NIRQ];
75	u_int32_t		ic_drqmask[ISA_NDRQ];
76	int			ic_nmem;
77	int			ic_nport;
78	int			ic_nirq;
79	int			ic_ndrq;
80};
81
82/*
83 * Used to build lists of IDs and description strings for PnP drivers.
84 */
85struct isa_pnp_id {
86	u_int32_t		ip_id;
87	const char		*ip_desc;
88};
89
90enum isa_device_ivars {
91	ISA_IVAR_PORT,
92	ISA_IVAR_PORT_0 = ISA_IVAR_PORT,
93	ISA_IVAR_PORT_1,
94	ISA_IVAR_PORTSIZE,
95	ISA_IVAR_PORTSIZE_0 = ISA_IVAR_PORTSIZE,
96	ISA_IVAR_PORTSIZE_1,
97	ISA_IVAR_MADDR,
98	ISA_IVAR_MADDR_0 = ISA_IVAR_MADDR,
99	ISA_IVAR_MADDR_1,
100	ISA_IVAR_MSIZE,
101	ISA_IVAR_MSIZE_0 = ISA_IVAR_MSIZE,
102	ISA_IVAR_MSIZE_1,
103	ISA_IVAR_IRQ,
104	ISA_IVAR_IRQ_0 = ISA_IVAR_IRQ,
105	ISA_IVAR_IRQ_1,
106	ISA_IVAR_DRQ,
107	ISA_IVAR_DRQ_0 = ISA_IVAR_DRQ,
108	ISA_IVAR_DRQ_1,
109	ISA_IVAR_VENDORID,
110	ISA_IVAR_SERIAL,
111	ISA_IVAR_LOGICALID,
112	ISA_IVAR_COMPATID
113};
114
115/*
116 * Simplified accessors for isa devices
117 */
118#define ISA_ACCESSOR(A, B, T)						\
119									\
120static __inline T isa_get_ ## A(device_t dev)				\
121{									\
122	uintptr_t v;							\
123	BUS_READ_IVAR(device_get_parent(dev), dev, ISA_IVAR_ ## B, &v);	\
124	return (T) v;							\
125}									\
126									\
127static __inline void isa_set_ ## A(device_t dev, T t)			\
128{									\
129	u_long v = (u_long) t;						\
130	BUS_WRITE_IVAR(device_get_parent(dev), dev, ISA_IVAR_ ## B, v);	\
131}
132
133ISA_ACCESSOR(port, PORT, int)
134ISA_ACCESSOR(portsize, PORTSIZE, int)
135ISA_ACCESSOR(irq, IRQ, int)
136ISA_ACCESSOR(drq, DRQ, int)
137ISA_ACCESSOR(maddr, MADDR, int)
138ISA_ACCESSOR(msize, MSIZE, int)
139ISA_ACCESSOR(vendorid, VENDORID, int)
140ISA_ACCESSOR(serial, SERIAL, int)
141ISA_ACCESSOR(logicalid, LOGICALID, int)
142ISA_ACCESSOR(compatid, COMPATID, int)
143
144extern intrmask_t isa_irq_pending(void);
145extern intrmask_t isa_irq_mask(void);
146#ifdef __i386__
147extern void	 isa_wrap_old_drivers(void);
148#endif
149extern void	isa_probe_children(device_t dev);
150
151extern void	isa_dmacascade __P((int chan));
152extern void	isa_dmadone __P((int flags, caddr_t addr, int nbytes, int chan));
153extern void	isa_dmainit __P((int chan, u_int bouncebufsize));
154extern void	isa_dmastart __P((int flags, caddr_t addr, u_int nbytes, int chan));
155extern int	isa_dma_acquire __P((int chan));
156extern void	isa_dma_release __P((int chan));
157extern int	isa_dmastatus __P((int chan));
158extern int	isa_dmastop __P((int chan));
159
160#endif /* KERNEL */
161
162#endif /* !_ISA_ISAVAR_H_ */
163