pcmb.c revision 1.4 
1/*	$NetBSD: pcmb.c,v 1.4 2002/09/27 20:33:05 thorpej 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/cdefs.h>
44__KERNEL_RCSID(0, "$NetBSD: pcmb.c,v 1.4 2002/09/27 20:33:05 thorpej Exp $");
45
46#include <sys/types.h>
47#include <sys/param.h>
48#include <sys/systm.h>
49#include <sys/device.h>
50
51#include <machine/bus.h>
52
53#include <dev/mca/mcavar.h>
54
55#include <dev/pci/pcivar.h>
56#include <dev/pci/pcireg.h>
57
58#include <dev/pci/pcidevs.h>
59
60#include "mca.h"
61
62int	pcmbmatch __P((struct device *, struct cfdata *, void *));
63void	pcmbattach __P((struct device *, struct device *, void *));
64
65const struct cfattach pcmb_ca = {
66	sizeof(struct device), pcmbmatch, pcmbattach
67};
68
69void	pcmb_callback __P((struct device *));
70int	pcmb_print __P((void *, const char *));
71
72union pcmb_attach_args {
73	const char *ma_name;			/* XXX should be common */
74	struct mcabus_attach_args ma_mba;
75};
76
77int
78pcmbmatch(parent, match, aux)
79	struct device *parent;
80	struct cfdata *match;
81	void *aux;
82{
83	struct pci_attach_args *pa = aux;
84
85	/*
86	 * Match anything which claims to be PCI-MCA bridge.
87	 */
88	if (PCI_CLASS(pa->pa_class) == PCI_CLASS_BRIDGE
89	    && PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_BRIDGE_MC)
90		return (1);
91
92	return (0);
93}
94
95void
96pcmbattach(parent, self, aux)
97	struct device *parent, *self;
98	void *aux;
99{
100	struct pci_attach_args *pa = aux;
101	char devinfo[256];
102
103	printf("\n");
104
105	/*
106	 * Just print out a description and defer configuration
107	 * until all PCI devices have been attached.
108	 */
109	pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo);
110	printf("%s: %s (rev. 0x%02x)\n", self->dv_xname, devinfo,
111	    PCI_REVISION(pa->pa_class));
112
113	config_defer(self, pcmb_callback);
114}
115
116void
117pcmb_callback(self)
118	struct device *self;
119{
120	union pcmb_attach_args ma;
121
122	/*
123	 * Attach MCA bus behind this bridge.
124	 */
125	ma.ma_mba.mba_busname = "mca";
126	ma.ma_mba.mba_iot = I386_BUS_SPACE_IO;
127	ma.ma_mba.mba_memt = I386_BUS_SPACE_MEM;
128#if NMCA > 0
129	ma.ma_mba.mba_dmat = &mca_bus_dma_tag;
130#endif
131	ma.ma_mba.mba_mc = NULL;
132	ma.ma_mba.mba_bus = 0;
133	config_found(self, &ma.ma_mba, pcmb_print);
134}
135
136int
137pcmb_print(aux, pnp)
138	void *aux;
139	const char *pnp;
140{
141	union pcmb_attach_args *ma = aux;
142
143	if (pnp)
144		printf("%s at %s", ma->ma_name, pnp);
145	return (UNCONF);
146}
147