pcmb.c revision 1.2 
1/*	$NetBSD: pcmb.c,v 1.2 2001/04/21 19:18:20 jdolecek Exp $	*/
2
3/*-
4 * Copyright (c) 1996, 1998 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jason R. Thorpe and Jaromir Dolecek.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 * 3. All advertising materials mentioning features or use of this software
19 *    must display the following acknowledgement:
20 *        This product includes software developed by the NetBSD
21 *        Foundation, Inc. and its contributors.
22 * 4. Neither the name of The NetBSD Foundation nor the names of its
23 *    contributors may be used to endorse or promote products derived
24 *    from this software without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36 * POSSIBILITY OF SUCH DAMAGE.
37 */
38
39/*
40 * "Driver" for PCI-MCA Bridges.
41 */
42
43#include <sys/types.h>
44#include <sys/param.h>
45#include <sys/systm.h>
46#include <sys/device.h>
47
48#include <machine/bus.h>
49
50#include <dev/mca/mcavar.h>
51
52#include <dev/pci/pcivar.h>
53#include <dev/pci/pcireg.h>
54
55#include <dev/pci/pcidevs.h>
56
57#include "mca.h"
58
59int	pcmbmatch __P((struct device *, struct cfdata *, void *));
60void	pcmbattach __P((struct device *, struct device *, void *));
61
62struct cfattach pcmb_ca = {
63	sizeof(struct device), pcmbmatch, pcmbattach
64};
65
66void	pcmb_callback __P((struct device *));
67int	pcmb_print __P((void *, const char *));
68
69union pcmb_attach_args {
70	const char *ma_name;			/* XXX should be common */
71	struct mcabus_attach_args ma_mba;
72};
73
74int
75pcmbmatch(parent, match, aux)
76	struct device *parent;
77	struct cfdata *match;
78	void *aux;
79{
80	struct pci_attach_args *pa = aux;
81
82	/*
83	 * Match anything which claims to be PCI-MCA bridge.
84	 */
85	if (PCI_CLASS(pa->pa_class) == PCI_CLASS_BRIDGE
86	    && PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_BRIDGE_MC)
87		return (1);
88
89	return (0);
90}
91
92void
93pcmbattach(parent, self, aux)
94	struct device *parent, *self;
95	void *aux;
96{
97	struct pci_attach_args *pa = aux;
98	char devinfo[256];
99
100	printf("\n");
101
102	/*
103	 * Just print out a description and defer configuration
104	 * until all PCI devices have been attached.
105	 */
106	pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo);
107	printf("%s: %s (rev. 0x%02x)\n", self->dv_xname, devinfo,
108	    PCI_REVISION(pa->pa_class));
109
110	config_defer(self, pcmb_callback);
111}
112
113void
114pcmb_callback(self)
115	struct device *self;
116{
117	union pcmb_attach_args ma;
118
119	/*
120	 * Attach MCA bus behind this bridge.
121	 */
122	ma.ma_mba.mba_busname = "mca";
123	ma.ma_mba.mba_iot = I386_BUS_SPACE_IO;
124	ma.ma_mba.mba_memt = I386_BUS_SPACE_MEM;
125#if NMCA > 0
126	ma.ma_mba.mba_dmat = &mca_bus_dma_tag;
127#endif
128	ma.ma_mba.mba_mc = NULL;
129	ma.ma_mba.mba_bus = 0;
130	config_found(self, &ma.ma_mba, pcmb_print);
131}
132
133int
134pcmb_print(aux, pnp)
135	void *aux;
136	const char *pnp;
137{
138	union pcmb_attach_args *ma = aux;
139
140	if (pnp)
141		printf("%s at %s", ma->ma_name, pnp);
142	return (UNCONF);
143}
144