147 lines
3.9 KiB
C
147 lines
3.9 KiB
C
/* $NetBSD: pcib.c,v 1.10 2004/04/23 21:13:05 itojun Exp $ */
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/*
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* Copyright (c) 2000 Soren S. Jorvang. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: pcib.c,v 1.10 2004/04/23 21:13:05 itojun Exp $");
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <sys/malloc.h>
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#include <machine/cpu.h>
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#include <machine/bus.h>
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#include <machine/autoconf.h>
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#include <machine/intr.h>
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#include <dev/pci/pcivar.h>
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#include <dev/pci/pcireg.h>
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#include <dev/pci/pcidevs.h>
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#include <dev/isa/isareg.h>
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static int pcib_match(struct device *, struct cfdata *, void *);
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static void pcib_attach(struct device *, struct device *, void *);
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static int icu_intr(void *);
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CFATTACH_DECL(pcib, sizeof(struct device),
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pcib_match, pcib_attach, NULL, NULL);
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static struct cobalt_intrhand icu[IO_ICUSIZE];
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static int
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pcib_match(parent, match, aux)
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struct device *parent;
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struct cfdata *match;
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void *aux;
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{
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struct pci_attach_args *pa = aux;
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if ((PCI_VENDOR(pa->pa_id) == PCI_VENDOR_VIATECH) &&
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(PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_VIATECH_VT82C586_ISA))
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return 1;
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return 0;
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}
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static void
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pcib_attach(parent, self, aux)
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struct device *parent;
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struct device *self;
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void *aux;
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{
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struct pci_attach_args *pa = aux;
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char devinfo[256];
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pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof(devinfo));
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printf("\n%s: %s, rev %d\n", self->dv_xname, devinfo,
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PCI_REVISION(pa->pa_class));
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/*
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* Initialize ICU. Since we block all these interrupts with
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* splbio(), we can just enable all of them all the time here.
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*/
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*(volatile u_int8_t *)MIPS_PHYS_TO_KSEG1(0x10000000 + IO_ICU1) = 0x10;
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*(volatile u_int8_t *)MIPS_PHYS_TO_KSEG1(0x10000000 + IO_ICU1+1) = 0xff;
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*(volatile u_int8_t *)MIPS_PHYS_TO_KSEG1(0x10000000 + IO_ICU2) = 0x10;
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*(volatile u_int8_t *)MIPS_PHYS_TO_KSEG1(0x10000000 + IO_ICU2+1) = 0xff;
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wbflush();
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cpu_intr_establish(4, IPL_NONE, icu_intr, NULL);
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}
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void *
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icu_intr_establish(irq, type, level, func, arg)
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int irq;
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int type;
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int level;
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int (*func)(void *);
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void *arg;
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{
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int i;
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for (i = 0; i < IO_ICUSIZE; i++) {
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if (icu[i].ih_func == NULL) {
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icu[i].cookie_type = COBALT_COOKIE_TYPE_ICU;
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icu[i].ih_func = func;
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icu[i].ih_arg = arg;
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return &icu[i];
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}
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}
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panic("too many IRQs");
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}
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void
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icu_intr_disestablish(cookie)
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void *cookie;
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{
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struct cobalt_intrhand *ih = cookie;
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if (ih->cookie_type == COBALT_COOKIE_TYPE_ICU) {
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ih->ih_func = NULL;
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ih->ih_arg = NULL;
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}
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}
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int
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icu_intr(arg)
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void *arg;
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{
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int i;
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for (i = 0; i < IO_ICUSIZE; i++) {
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if (icu[i].ih_func == NULL)
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return 0;
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(*icu[i].ih_func)(icu[i].ih_arg);
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}
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return 0;
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}
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