227 lines
6.7 KiB
C
227 lines
6.7 KiB
C
/* $NetBSD: pcib.c,v 1.4 2008/04/04 16:04:19 matt 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 1.4 2008/04/04 16:04:19 matt 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(device_t, cfdata_t, void *);
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void pcibattach(device_t, device_t, void *);
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struct pcib_softc {
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device_t sc_dev;
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struct powerpc_isa_chipset *sc_chipset;
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};
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extern struct powerpc_isa_chipset genppc_ict;
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extern struct genppc_pci_chipset *genppc_pct;
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CFATTACH_DECL_NEW(pcib, sizeof(struct pcib_softc),
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pcibmatch, pcibattach, NULL, NULL);
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void pcib_callback(device_t);
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int
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pcibmatch(device_t parent, cfdata_t cf, 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(device_t parent, device_t self, void *aux)
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{
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struct pci_attach_args *pa = aux;
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struct pcib_softc *sc = device_private(self);
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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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#ifdef prep
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prop_bool_t rav;
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#endif
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sc->sc_dev = self;
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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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aprint_normal(": %s (rev. 0x%02x)\n", devinfo,
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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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aprint_verbose("%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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aprint_verbose("%s: PIRQ[0-3] disabled\n",
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self->dv_xname);
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} else {
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int i;
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aprint_verbose("%s:", device_xname(self));
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for (i = 0; i < 4; i++, v >>= 8) {
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if ((v & 0x80) == 0 && (v & 0x0f) != 0) {
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aprint_verbose(" PIRQ[%d]=%d", i,
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v & 0x0f);
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lvlmask |= (1 << (v & 0x0f));
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}
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}
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aprint_verbose("\n");
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}
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}
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/*
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* If we have an 83C553F-G sitting on a RAVEN host bridge,
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* then we need to rewire some interrupts.
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* The IDE Interrupt Routing Control Register lives at 0x43,
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* and defaults to 0xEF, which means the primary controller
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* interrupts on ivr-14, and the secondary on ivr-15. We
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* reset it to 0xEE to fire them both at ivr-14.
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* We have to rewrite the interrupt map, because the bridge map told
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* us that the interrupt is MPIC 0, which is the bridge intr for
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* the 8259.
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* Additionally, sometimes the PCI Interrupt Routing Control Register
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* is improperly initialized, causing all sorts of wierd interrupt
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* issues on the machine. The manual says it should default to
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* 0000h (index 45-44h) however it would appear that PPCBUG is
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* setting it up differently. Reset it to 0000h.
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*/
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if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_SYMPHONY &&
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PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_SYMPHONY_83C553) {
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v = pci_conf_read(pa->pa_pc, pa->pa_tag, 0x44) & 0xffff0000;
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pci_conf_write(pa->pa_pc, pa->pa_tag, 0x44, v);
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}
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#ifdef prep
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rav = prop_dictionary_get(device_properties(parent),
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"prep-raven-pchb");
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if (rav != NULL && prop_bool_true(rav) &&
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PCI_VENDOR(pa->pa_id) == PCI_VENDOR_SYMPHONY &&
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PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_SYMPHONY_83C553) {
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prop_dictionary_t dict, devsub;
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prop_number_t pinsub;
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struct genppc_pci_chipset_businfo *pbi;
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v = pci_conf_read(pa->pa_pc, pa->pa_tag, 0x40) & 0x00ffffff;
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v |= 0xee000000;
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pci_conf_write(pa->pa_pc, pa->pa_tag, 0x40, v);
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pbi = SIMPLEQ_FIRST(&genppc_pct->pc_pbi);
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dict = prop_dictionary_get(pbi->pbi_properties,
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"prep-pci-intrmap");
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devsub = prop_dictionary_get(dict, "devfunc-11");
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pinsub = prop_number_create_integer(14);
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prop_dictionary_set(devsub, "pin-A", pinsub);
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prop_object_release(pinsub);
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aprint_verbose_dev(self, "setting pciide irq to 14\n");
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/* irq 14 is level */
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lvlmask = 0x0040;
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}
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#endif /* prep */
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config_defer(self, pcib_callback);
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}
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void
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pcib_callback(device_t self)
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{
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struct pcib_softc *sc = device_private(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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sc->sc_chipset = &genppc_ict;
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iba.iba_ic = sc->sc_chipset;
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iba.iba_iot = &genppc_isa_io_space_tag;
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iba.iba_memt = &genppc_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_ia(sc->sc_dev, "isabus", &iba, isabusprint);
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#endif
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}
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