pcib.c revision 1.10 
1/*	$NetBSD: pcib.c,v 1.10 2004/04/23 21:13:05 itojun Exp $	*/
2
3/*
4 * Copyright (c) 2000 Soren S. Jorvang.  All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions, and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28#include <sys/cdefs.h>
29__KERNEL_RCSID(0, "$NetBSD: pcib.c,v 1.10 2004/04/23 21:13:05 itojun Exp $");
30
31#include <sys/types.h>
32#include <sys/param.h>
33#include <sys/systm.h>
34#include <sys/device.h>
35#include <sys/malloc.h>
36
37#include <machine/cpu.h>
38#include <machine/bus.h>
39#include <machine/autoconf.h>
40#include <machine/intr.h>
41
42#include <dev/pci/pcivar.h>
43#include <dev/pci/pcireg.h>
44#include <dev/pci/pcidevs.h>
45
46#include <dev/isa/isareg.h>
47
48static int	pcib_match(struct device *, struct cfdata *, void *);
49static void	pcib_attach(struct device *, struct device *, void *);
50static int	icu_intr(void *);
51
52CFATTACH_DECL(pcib, sizeof(struct device),
53    pcib_match, pcib_attach, NULL, NULL);
54
55static struct cobalt_intrhand icu[IO_ICUSIZE];
56
57static int
58pcib_match(parent, match, aux)
59	struct device *parent;
60	struct cfdata *match;
61	void *aux;
62{
63	struct pci_attach_args *pa = aux;
64
65	if ((PCI_VENDOR(pa->pa_id) == PCI_VENDOR_VIATECH) &&
66	    (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_VIATECH_VT82C586_ISA))
67		return 1;
68
69	return 0;
70}
71
72static void
73pcib_attach(parent, self, aux)
74	struct device *parent;
75	struct device *self;
76	void *aux;
77{
78	struct pci_attach_args *pa = aux;
79	char devinfo[256];
80
81	pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof(devinfo));
82	printf("\n%s: %s, rev %d\n", self->dv_xname, devinfo,
83					PCI_REVISION(pa->pa_class));
84
85	/*
86	 * Initialize ICU. Since we block all these interrupts with
87	 * splbio(), we can just enable all of them all the time here.
88	 */
89	*(volatile u_int8_t *)MIPS_PHYS_TO_KSEG1(0x10000000 + IO_ICU1) = 0x10;
90	*(volatile u_int8_t *)MIPS_PHYS_TO_KSEG1(0x10000000 + IO_ICU1+1) = 0xff;
91	*(volatile u_int8_t *)MIPS_PHYS_TO_KSEG1(0x10000000 + IO_ICU2) = 0x10;
92	*(volatile u_int8_t *)MIPS_PHYS_TO_KSEG1(0x10000000 + IO_ICU2+1) = 0xff;
93	wbflush();
94
95	cpu_intr_establish(4, IPL_NONE, icu_intr, NULL);
96}
97
98void *
99icu_intr_establish(irq, type, level, func, arg)
100	int irq;
101	int type;
102	int level;
103	int (*func)(void *);
104	void *arg;
105{
106	int i;
107
108	for (i = 0; i < IO_ICUSIZE; i++) {
109		if (icu[i].ih_func == NULL) {
110			icu[i].cookie_type = COBALT_COOKIE_TYPE_ICU;
111			icu[i].ih_func = func;
112			icu[i].ih_arg = arg;
113			return &icu[i];
114		}
115	}
116
117	panic("too many IRQs");
118}
119
120void
121icu_intr_disestablish(cookie)
122	void *cookie;
123{
124	struct cobalt_intrhand *ih = cookie;
125
126	if (ih->cookie_type == COBALT_COOKIE_TYPE_ICU) {
127		ih->ih_func = NULL;
128		ih->ih_arg = NULL;
129	}
130}
131
132int
133icu_intr(arg)
134	void *arg;
135{
136	int i;
137
138	for (i = 0; i < IO_ICUSIZE; i++) {
139		if (icu[i].ih_func == NULL)
140			return 0;
141
142		(*icu[i].ih_func)(icu[i].ih_arg);
143	}
144
145	return 0;
146}
147