206 lines
6.0 KiB
C
206 lines
6.0 KiB
C
/* $NetBSD: pchb.c,v 1.2 2002/03/13 19:28:25 eeh Exp $ */
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/*-
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* Copyright (c) 1996 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 "pci.h"
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#include "opt_pci.h"
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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/extent.h>
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#include <sys/malloc.h>
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#define _GALAXY_BUS_DMA_PRIVATE
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#include <machine/autoconf.h>
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#include <machine/bus.h>
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#include <machine/walnut.h>
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#include <powerpc/ibm4xx/ibm405gp.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/pci/pciconf.h>
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static int pchbmatch(struct device *, struct cfdata *, void *);
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static void pchbattach(struct device *, struct device *, void *);
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static int phcbprint(void *, const char *);
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struct cfattach pchb_ca = {
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sizeof(struct device), pchbmatch, pchbattach
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};
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int pcifound = 0;
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static int
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pchbmatch(struct device *parent, struct cfdata *cf, void *aux)
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{
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struct mainbus_attach_args *mba = (struct mainbus_attach_args *)aux;
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/* XXX chipset tag unused by walnut, so just pass 0 */
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pci_chipset_tag_t pc = 0;
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pcitag_t tag;
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int class, id;
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/* match only pchb devices */
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if (strcmp(mba->mb_name, cf->cf_driver->cd_name) != 0)
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return 0;
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pci_machdep_init();
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tag = pci_make_tag(pc, 0, 0, 0);
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class = pci_conf_read(pc, tag, PCI_CLASS_REG);
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id = pci_conf_read(pc, tag, PCI_ID_REG);
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/*
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* Match all known PCI host chipsets.
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*/
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if (PCI_CLASS(class) == PCI_CLASS_BRIDGE &&
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PCI_SUBCLASS(class) == PCI_SUBCLASS_BRIDGE_HOST) {
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switch (PCI_VENDOR(id)) {
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case PCI_VENDOR_IBM:
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switch (PCI_PRODUCT(id)) {
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case PCI_PRODUCT_IBM_405GP:
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return (!pcifound);
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}
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break;
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}
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}
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return (0);
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}
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static void
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pchbattach(struct device *parent, struct device *self, void *aux)
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{
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/* struct mainbus_attach_args *mba = (struct mainbus_attach_args *)aux; */
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struct pcibus_attach_args pba;
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char devinfo[256];
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#ifdef PCI_NETBSD_CONFIGURE
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struct extent *ioext, *memext;
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#ifdef PCI_CONFIGURE_VERBOSE
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extern int pci_conf_debug;
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pci_conf_debug = 1;
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#endif
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#endif
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pci_chipset_tag_t pc = 0;
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pcitag_t tag;
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int class, id;
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pci_machdep_init();
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tag = pci_make_tag(pc, 0, 0, 0);
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class = pci_conf_read(pc, tag, PCI_CLASS_REG);
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id = pci_conf_read(pc, tag, PCI_ID_REG);
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printf("\n");
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pcifound++;
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/*
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* All we do is print out a description. Eventually, we
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* might want to add code that does something that's
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* possibly chipset-specific.
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*/
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pci_devinfo(id, class, 0, devinfo);
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printf("%s: %s (rev. 0x%02x)\n", self->dv_xname, devinfo,
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PCI_REVISION(class));
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pci_machdep_init(); /* Redundant... */
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galaxy_setup_pci();
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#ifdef PCI_CONFIGURE_VERBOSE
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galaxy_show_pci_map();
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#endif
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#ifdef PCI_NETBSD_CONFIGURE
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memext = extent_create("pcimem", MIN_PCI_MEMADDR_NOPREFETCH,
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MIN_PCI_MEMADDR_NOPREFETCH + 0x1fffffff, M_DEVBUF, NULL, 0,
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EX_NOWAIT);
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ioext = extent_create("pciio", MIN_PCI_PCI_IOADDR,
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MIN_PCI_PCI_IOADDR + 0xffff, M_DEVBUF, NULL, 0, EX_NOWAIT);
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pci_configure_bus(0, ioext, memext, NULL, 0, 32);
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extent_destroy(memext);
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#endif /* PCI_NETBSD_CONFIGURE */
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#ifdef PCI_CONFIGURE_VERBOSE
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printf("running config_found PCI\n");
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#endif
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pba.pba_busname = "pci";
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/* IO window located @ e8000000 and maps to 0-0xffff */
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pba.pba_iot = galaxy_make_bus_space_tag(MIN_PLB_PCI_IOADDR, 0);
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/* PCI memory window is directly mapped */
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pba.pba_memt = galaxy_make_bus_space_tag(0, 0);
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pba.pba_dmat = &galaxy_default_bus_dma_tag;
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pba.pba_bus = 0;
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pba.pba_flags = PCI_FLAGS_MEM_ENABLED | PCI_FLAGS_IO_ENABLED;
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config_found(self, &pba, phcbprint);
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}
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static int
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phcbprint(void *aux, const char *p)
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{
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if (p == NULL)
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return (UNCONF);
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return (QUIET);
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}
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#if 0
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static void
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scan_pci_bus(void)
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{
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pcitag_t tag;
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int i, x;
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for (i=0;i<32;i++){
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tag = pci_make_tag(0, 0, i, 0);
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x = pci_conf_read(0, tag, 0);
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printf("%d tag=%08x : %08x\n", i, tag, x);
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#if 0
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if (PCI_VENDOR(x) == PCI_VENDOR_INTEL
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&& PCI_PRODUCT(x) == PCI_PRODUCT_INTEL_80960_RP) {
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/* Do not configure PCI bus analyzer */
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continue;
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}
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x = pci_conf_read(0, tag, PCI_COMMAND_STATUS_REG);
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x |= PCI_COMMAND_IO_ENABLE | PCI_COMMAND_MEM_ENABLE | PCI_COMMAND_MASTER_ENABLE;
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pci_conf_write(0, tag, PCI_COMMAND_STATUS_REG, x);
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#endif
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}
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}
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#endif
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