isavar.h revision 57973 
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 57973 2000-03-13 10:19:32Z phk $
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	50
53#define	ISA_NMEM	8
54#define	ISA_NIRQ	2
55#define	ISA_NDRQ	2
56
57#define ISADMA_READ	0x00100000
58#define ISADMA_WRITE	0
59#define ISADMA_RAW	0x00080000
60/*
61 * Plug and play cards can support a range of resource
62 * configurations. This structure is used by the isapnp parser to
63 * inform the isa bus about the resource possibilities of the
64 * device. Each different alternative should be supplied by calling
65 * ISA_ADD_CONFIG().
66 */
67struct isa_range {
68	u_int32_t		ir_start;
69	u_int32_t		ir_end;
70	u_int32_t		ir_size;
71	u_int32_t		ir_align;
72};
73
74struct isa_config {
75	struct isa_range	ic_mem[ISA_NMEM];
76	struct isa_range	ic_port[ISA_NPORT];
77	u_int32_t		ic_irqmask[ISA_NIRQ];
78	u_int32_t		ic_drqmask[ISA_NDRQ];
79	int			ic_nmem;
80	int			ic_nport;
81	int			ic_nirq;
82	int			ic_ndrq;
83};
84
85/*
86 * Used to build lists of IDs and description strings for PnP drivers.
87 */
88struct isa_pnp_id {
89	u_int32_t		ip_id;
90	const char		*ip_desc;
91};
92
93enum isa_device_ivars {
94	ISA_IVAR_PORT,
95	ISA_IVAR_PORT_0 = ISA_IVAR_PORT,
96	ISA_IVAR_PORT_1,
97	ISA_IVAR_PORTSIZE,
98	ISA_IVAR_PORTSIZE_0 = ISA_IVAR_PORTSIZE,
99	ISA_IVAR_PORTSIZE_1,
100	ISA_IVAR_MADDR,
101	ISA_IVAR_MADDR_0 = ISA_IVAR_MADDR,
102	ISA_IVAR_MADDR_1,
103	ISA_IVAR_MSIZE,
104	ISA_IVAR_MSIZE_0 = ISA_IVAR_MSIZE,
105	ISA_IVAR_MSIZE_1,
106	ISA_IVAR_IRQ,
107	ISA_IVAR_IRQ_0 = ISA_IVAR_IRQ,
108	ISA_IVAR_IRQ_1,
109	ISA_IVAR_DRQ,
110	ISA_IVAR_DRQ_0 = ISA_IVAR_DRQ,
111	ISA_IVAR_DRQ_1,
112	ISA_IVAR_VENDORID,
113	ISA_IVAR_SERIAL,
114	ISA_IVAR_LOGICALID,
115	ISA_IVAR_COMPATID
116};
117
118/*
119 * Simplified accessors for isa devices
120 */
121#define ISA_ACCESSOR(A, B, T)						\
122									\
123static __inline T isa_get_ ## A(device_t dev)				\
124{									\
125	uintptr_t v;							\
126	BUS_READ_IVAR(device_get_parent(dev), dev, ISA_IVAR_ ## B, &v);	\
127	return (T) v;							\
128}									\
129									\
130static __inline void isa_set_ ## A(device_t dev, T t)			\
131{									\
132	u_long v = (u_long) t;						\
133	BUS_WRITE_IVAR(device_get_parent(dev), dev, ISA_IVAR_ ## B, v);	\
134}
135
136ISA_ACCESSOR(port, PORT, int)
137ISA_ACCESSOR(portsize, PORTSIZE, int)
138ISA_ACCESSOR(irq, IRQ, int)
139ISA_ACCESSOR(drq, DRQ, int)
140ISA_ACCESSOR(maddr, MADDR, int)
141ISA_ACCESSOR(msize, MSIZE, int)
142ISA_ACCESSOR(vendorid, VENDORID, int)
143ISA_ACCESSOR(serial, SERIAL, int)
144ISA_ACCESSOR(logicalid, LOGICALID, int)
145ISA_ACCESSOR(compatid, COMPATID, int)
146
147extern intrmask_t isa_irq_pending(void);
148extern intrmask_t isa_irq_mask(void);
149#ifdef __i386__
150extern void	 isa_wrap_old_drivers(void);
151#endif
152extern void	isa_probe_children(device_t dev);
153
154extern void	isa_dmacascade __P((int chan));
155extern void	isa_dmadone __P((int flags, caddr_t addr, int nbytes, int chan));
156extern void	isa_dmainit __P((int chan, u_int bouncebufsize));
157extern void	isa_dmastart __P((int flags, caddr_t addr, u_int nbytes, int chan));
158extern int	isa_dma_acquire __P((int chan));
159extern void	isa_dma_release __P((int chan));
160extern int	isa_dmastatus __P((int chan));
161extern int	isa_dmastop __P((int chan));
162
163#endif /* _KERNEL */
164
165#endif /* !_ISA_ISAVAR_H_ */
166