154 lines
4.2 KiB
C
154 lines
4.2 KiB
C
/* $NetBSD: mainbus.c,v 1.8 2002/02/24 13:19:09 kleink Exp $ */
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/*
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* Copyright (c) 1996 Christopher G. Demetriou. 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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* 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 Christopher G. Demetriou
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* for the NetBSD Project.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/param.h>
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#include <sys/extent.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/autoconf.h>
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#include <machine/bus.h>
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#include "pci.h"
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#include "opt_pci.h"
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#include <dev/pci/pcivar.h>
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#include <dev/pci/pciconf.h>
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#include <machine/platform.h>
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int mainbus_match(struct device *, struct cfdata *, void *);
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void mainbus_attach(struct device *, struct device *, void *);
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struct cfattach mainbus_ca = {
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sizeof(struct device), mainbus_match, mainbus_attach
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};
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int mainbus_print(void *, const char *);
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union mainbus_attach_args {
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const char *mba_busname; /* first elem of all */
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struct pcibus_attach_args mba_pba;
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};
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/* There can be only one. */
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int mainbus_found;
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/*
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* Probe for the mainbus; always succeeds.
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*/
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int
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mainbus_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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if (mainbus_found)
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return 0;
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return 1;
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}
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/*
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* Attach the mainbus.
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*/
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void
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mainbus_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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union mainbus_attach_args mba;
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struct confargs ca;
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#if NPCI > 0
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static struct prep_pci_chipset pc;
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#ifdef PCI_NETBSD_CONFIGURE
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struct extent *ioext, *memext;
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#endif
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#endif
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mainbus_found = 1;
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printf("\n");
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ca.ca_name = "cpu";
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ca.ca_node = 0;
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config_found(self, &ca, mainbus_print);
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/*
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* XXX Note also that the presence of a PCI bus should
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* XXX _always_ be checked, and if present the bus should be
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* XXX 'found'. However, because of the structure of the code,
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* XXX that's not currently possible.
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*/
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#if NPCI > 0
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(*platform->pci_get_chipset_tag)(&pc);
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#ifdef PCI_NETBSD_CONFIGURE
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ioext = extent_create("pciio", 0x00008000, 0x0000ffff, M_DEVBUF,
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NULL, 0, EX_NOWAIT);
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memext = extent_create("pcimem", 0x00000000, 0x0fffffff, M_DEVBUF,
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NULL, 0, EX_NOWAIT);
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pci_configure_bus(&pc, ioext, memext, NULL, 0, CACHELINESIZE);
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extent_destroy(ioext);
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extent_destroy(memext);
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#endif
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mba.mba_pba.pba_busname = "pci";
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mba.mba_pba.pba_iot = &prep_io_space_tag;
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mba.mba_pba.pba_memt = &prep_mem_space_tag;
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mba.mba_pba.pba_dmat = &pci_bus_dma_tag;
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mba.mba_pba.pba_pc = &pc;
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mba.mba_pba.pba_bus = 0;
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mba.mba_pba.pba_flags = PCI_FLAGS_IO_ENABLED | PCI_FLAGS_MEM_ENABLED;
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config_found(self, &mba.mba_pba, mainbus_print);
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#endif
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}
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int
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mainbus_print(aux, pnp)
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void *aux;
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const char *pnp;
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{
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union mainbus_attach_args *mba = aux;
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if (pnp)
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printf("%s at %s", mba->mba_busname, pnp);
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if (!strcmp(mba->mba_busname, "pci"))
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printf(" bus %d", mba->mba_pba.pba_bus);
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return (UNCONF);
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}
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