NetBSD/sys/arch/cobalt/pci/pcib.c

145 lines
3.8 KiB
C

/* $NetBSD: pcib.c,v 1.6 2002/10/02 05:07:44 thorpej Exp $ */
/*
* Copyright (c) 2000 Soren S. Jorvang. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions, and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/types.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <machine/cpu.h>
#include <machine/bus.h>
#include <machine/autoconf.h>
#include <machine/intr.h>
#include <machine/intr_machdep.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcidevs.h>
#include <dev/isa/isareg.h>
static int pcib_match(struct device *, struct cfdata *, void *);
static void pcib_attach(struct device *, struct device *, void *);
static int icu_intr(void *);
CFATTACH_DECL(pcib, sizeof(struct device),
pcib_match, pcib_attach, NULL, NULL);
static struct cobalt_intr icu[IO_ICUSIZE];
static int
pcib_match(parent, match, aux)
struct device *parent;
struct cfdata *match;
void *aux;
{
struct pci_attach_args *pa = aux;
if ((PCI_VENDOR(pa->pa_id) == PCI_VENDOR_VIATECH) &&
(PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_VIATECH_VT82C586_ISA))
return 1;
return 0;
}
static void
pcib_attach(parent, self, aux)
struct device *parent;
struct device *self;
void *aux;
{
struct pci_attach_args *pa = aux;
char devinfo[256];
pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo);
printf("\n%s: %s, rev %d\n", self->dv_xname, devinfo,
PCI_REVISION(pa->pa_class));
/*
* Initialize ICU. Since we block all these interrupts with
* splbio(), we can just enable all of them all the time here.
*/
*(volatile u_int8_t *)MIPS_PHYS_TO_KSEG1(0x10000000 + IO_ICU1) = 0x10;
*(volatile u_int8_t *)MIPS_PHYS_TO_KSEG1(0x10000000 + IO_ICU1+1) = 0xff;
*(volatile u_int8_t *)MIPS_PHYS_TO_KSEG1(0x10000000 + IO_ICU2) = 0x10;
*(volatile u_int8_t *)MIPS_PHYS_TO_KSEG1(0x10000000 + IO_ICU2+1) = 0xff;
wbflush();
cpu_intr_establish(4, IPL_NONE, icu_intr, NULL);
}
void *
icu_intr_establish(irq, type, level, func, arg)
int irq;
int type;
int level;
int (*func)(void *);
void *arg;
{
int i;
for (i = 0; i < IO_ICUSIZE; i++) {
if (icu[i].func == NULL) {
icu[i].cookie_type = COBALT_COOKIE_TYPE_ICU;
icu[i].func = func;
icu[i].arg = arg;
return &icu[i];
}
}
panic("too many IRQs");
}
void
icu_intr_disestablish(cookie)
void *cookie;
{
struct cobalt_intr *p = cookie;
if (p->cookie_type == COBALT_COOKIE_TYPE_ICU) {
p->func = NULL;
p->arg = NULL;
}
}
int
icu_intr(arg)
void *arg;
{
int i;
for (i = 0; i < IO_ICUSIZE; i++) {
if (icu[i].func == NULL)
return 0;
(*icu[i].func)(icu[i].arg);
}
return 0;
}