pcib.c revision 1.7 
1/*	$NetBSD: pcib.c,v 1.7 2003/07/15 01:29:23 lukem 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 1.7 2003/07/15 01:29:23 lukem 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#include <machine/intr_machdep.h>
42
43#include <dev/pci/pcivar.h>
44#include <dev/pci/pcireg.h>
45#include <dev/pci/pcidevs.h>
46
47#include <dev/isa/isareg.h>
48
49static int	pcib_match(struct device *, struct cfdata *, void *);
50static void	pcib_attach(struct device *, struct device *, void *);
51static int	icu_intr(void *);
52
53CFATTACH_DECL(pcib, sizeof(struct device),
54    pcib_match, pcib_attach, NULL, NULL);
55
56static struct cobalt_intr icu[IO_ICUSIZE];
57
58static int
59pcib_match(parent, match, aux)
60	struct device *parent;
61	struct cfdata *match;
62	void *aux;
63{
64	struct pci_attach_args *pa = aux;
65
66	if ((PCI_VENDOR(pa->pa_id) == PCI_VENDOR_VIATECH) &&
67	    (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_VIATECH_VT82C586_ISA))
68		return 1;
69
70	return 0;
71}
72
73static void
74pcib_attach(parent, self, aux)
75	struct device *parent;
76	struct device *self;
77	void *aux;
78{
79	struct pci_attach_args *pa = aux;
80	char devinfo[256];
81
82	pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo);
83	printf("\n%s: %s, rev %d\n", self->dv_xname, devinfo,
84					PCI_REVISION(pa->pa_class));
85
86	/*
87	 * Initialize ICU. Since we block all these interrupts with
88	 * splbio(), we can just enable all of them all the time here.
89	 */
90	*(volatile u_int8_t *)MIPS_PHYS_TO_KSEG1(0x10000000 + IO_ICU1) = 0x10;
91	*(volatile u_int8_t *)MIPS_PHYS_TO_KSEG1(0x10000000 + IO_ICU1+1) = 0xff;
92	*(volatile u_int8_t *)MIPS_PHYS_TO_KSEG1(0x10000000 + IO_ICU2) = 0x10;
93	*(volatile u_int8_t *)MIPS_PHYS_TO_KSEG1(0x10000000 + IO_ICU2+1) = 0xff;
94	wbflush();
95
96	cpu_intr_establish(4, IPL_NONE, icu_intr, NULL);
97}
98
99void *
100icu_intr_establish(irq, type, level, func, arg)
101        int irq;
102        int type;
103        int level;
104        int (*func)(void *);
105        void *arg;
106{
107	int i;
108
109	for (i = 0; i < IO_ICUSIZE; i++) {
110		if (icu[i].func == NULL) {
111			icu[i].cookie_type = COBALT_COOKIE_TYPE_ICU;
112			icu[i].func = func;
113			icu[i].arg = arg;
114			return &icu[i];
115		}
116	}
117
118	panic("too many IRQs");
119}
120
121void
122icu_intr_disestablish(cookie)
123	void *cookie;
124{
125	struct cobalt_intr *p = cookie;
126
127	if (p->cookie_type == COBALT_COOKIE_TYPE_ICU) {
128		p->func = NULL;
129		p->arg = NULL;
130	}
131}
132
133int
134icu_intr(arg)
135	void *arg;
136{
137	int i;
138
139	for (i = 0; i < IO_ICUSIZE; i++) {
140		if (icu[i].func == NULL)
141			return 0;
142
143		(*icu[i].func)(icu[i].arg);
144	}
145
146	return 0;
147}
148