186 lines
4.9 KiB
C
186 lines
4.9 KiB
C
/* $NetBSD: pcib.c,v 1.12 2004/04/23 21:13:06 itojun Exp $ */
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/*-
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* Copyright (c) 1996, 1998 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jason R. Thorpe.
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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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF 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 1.12 2004/04/23 21:13:06 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 <machine/bus.h>
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#include <dev/isa/isavar.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 "isa.h"
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#include "isadma.h"
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int pcibmatch(struct device *, struct cfdata *, void *);
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void pcibattach(struct device *, struct device *, void *);
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struct pcib_softc {
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struct device sc_dev;
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struct prep_isa_chipset sc_chipset;
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};
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CFATTACH_DECL(pcib, sizeof(struct pcib_softc),
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pcibmatch, pcibattach, NULL, NULL);
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void pcib_callback(struct device *);
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int pcib_print(void *, const char *);
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int
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pcibmatch(parent, cf, aux)
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struct device *parent;
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struct cfdata *cf;
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void *aux;
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{
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struct pci_attach_args *pa = aux;
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/*
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* Match PCI-ISA bridge.
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*/
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if (PCI_CLASS(pa->pa_class) == PCI_CLASS_BRIDGE &&
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PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_BRIDGE_ISA) {
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return (1);
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}
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/*
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* some special cases:
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*/
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switch (PCI_VENDOR(pa->pa_id)) {
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case PCI_VENDOR_INTEL:
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switch (PCI_PRODUCT(pa->pa_id)) {
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case PCI_PRODUCT_INTEL_SIO:
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/*
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* The Intel SIO identifies itself as a
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* miscellaneous prehistoric.
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*/
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return (1);
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}
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break;
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}
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return (0);
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}
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void
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pcibattach(parent, self, aux)
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struct device *parent, *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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u_int32_t v;
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int lvlmask = 0;
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/*
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* Just print out a description and defer configuration
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* until all PCI devices have been attached.
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*/
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pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof(devinfo));
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printf(": %s (rev. 0x%02x)\n", devinfo, PCI_REVISION(pa->pa_class));
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v = pci_conf_read(pa->pa_pc, pa->pa_tag, 0x40);
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if ((v & 0x20) == 0) {
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printf("%s: PIRQ[0-3] not used\n", self->dv_xname);
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} else {
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v = pci_conf_read(pa->pa_pc, pa->pa_tag, 0x60);
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if ((v & 0x80808080) == 0x80808080) {
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printf("%s: PIRQ[0-3] disabled\n", self->dv_xname);
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} else {
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int i;
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printf("%s:", self->dv_xname);
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for (i = 0; i < 4; i++, v >>= 8) {
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if ((v & 80) == 0 && (v & 0x0f) != 0) {
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printf(" PIRQ[%d]=%d", i, v & 0x0f);
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lvlmask |= (1 << (v & 0x0f));
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}
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}
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printf("\n");
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}
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}
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#if NISA > 0
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/* Initialize interrupt controller */
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init_icu(lvlmask);
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#endif
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config_defer(self, pcib_callback);
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}
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void
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pcib_callback(self)
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struct device *self;
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{
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struct pcib_softc *sc = (struct pcib_softc *)self;
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#if NISA > 0
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struct isabus_attach_args iba;
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/*
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* Attach the ISA bus behind this bridge.
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*/
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memset(&iba, 0, sizeof(iba));
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iba.iba_busname = "isa";
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iba.iba_ic = &sc->sc_chipset;
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iba.iba_iot = &prep_isa_io_space_tag;
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iba.iba_memt = &prep_isa_mem_space_tag;
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#if NISADMA > 0
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iba.iba_dmat = &isa_bus_dma_tag;
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#endif
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config_found(&sc->sc_dev, &iba, pcib_print);
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#endif
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}
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int
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pcib_print(aux, pnp)
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void *aux;
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const char *pnp;
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{
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/* Only ISAs can attach to pcib's; easy. */
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if (pnp)
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aprint_normal("isa at %s", pnp);
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return (UNCONF);
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}
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