pcmb.c revision 1.8 
1/*	$NetBSD: pcmb.c,v 1.8 2003/02/26 22:23:09 fvdl 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 1.8 2003/02/26 22:23:09 fvdl 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
65CFATTACH_DECL(pcmb, sizeof(struct device),
66    pcmbmatch, pcmbattach, NULL, NULL);
67
68void	pcmb_callback __P((struct device *));
69int	pcmb_print __P((void *, const char *));
70
71union pcmb_attach_args {
72	const char *ma_name;			/* XXX should be common */
73	struct mcabus_attach_args ma_mba;
74};
75
76int
77pcmbmatch(parent, match, aux)
78	struct device *parent;
79	struct cfdata *match;
80	void *aux;
81{
82	struct pci_attach_args *pa = aux;
83
84	/*
85	 * Match anything which claims to be PCI-MCA bridge.
86	 */
87	if (PCI_CLASS(pa->pa_class) == PCI_CLASS_BRIDGE
88	    && PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_BRIDGE_MC)
89		return (1);
90
91	return (0);
92}
93
94void
95pcmbattach(parent, self, aux)
96	struct device *parent, *self;
97	void *aux;
98{
99	struct pci_attach_args *pa = aux;
100	char devinfo[256];
101
102	printf("\n");
103
104	/*
105	 * Just print out a description and defer configuration
106	 * until all PCI devices have been attached.
107	 */
108	pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo);
109	printf("%s: %s (rev. 0x%02x)\n", self->dv_xname, devinfo,
110	    PCI_REVISION(pa->pa_class));
111
112	config_defer(self, pcmb_callback);
113}
114
115void
116pcmb_callback(self)
117	struct device *self;
118{
119	union pcmb_attach_args ma;
120
121	/*
122	 * Attach MCA bus behind this bridge.
123	 */
124	ma.ma_mba.mba_busname = "mca";
125	ma.ma_mba.mba_iot = X86_BUS_SPACE_IO;
126	ma.ma_mba.mba_memt = X86_BUS_SPACE_MEM;
127#if NMCA > 0
128	ma.ma_mba.mba_dmat = &mca_bus_dma_tag;
129#endif
130	ma.ma_mba.mba_mc = NULL;
131	ma.ma_mba.mba_bus = 0;
132	config_found(self, &ma.ma_mba, pcmb_print);
133}
134
135int
136pcmb_print(aux, pnp)
137	void *aux;
138	const char *pnp;
139{
140	union pcmb_attach_args *ma = aux;
141
142	if (pnp)
143		aprint_normal("%s at %s", ma->ma_name, pnp);
144	return (UNCONF);
145}
146