77baf28d70
the chipset space init functions multiple times, since that would clobber extent allocations made between the two calls.
190 lines
4.3 KiB
C
190 lines
4.3 KiB
C
/* $NetBSD: cia.c,v 1.14 1996/11/25 03:55:46 cgd Exp $ */
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/*
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* Copyright (c) 1995, 1996 Carnegie-Mellon University.
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* All rights reserved.
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*
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* Author: Chris G. Demetriou
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*
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* Permission to use, copy, modify and distribute this software and
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* its documentation is hereby granted, provided that both the copyright
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* notice and this permission notice appear in all copies of the
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation.
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*
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* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
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* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
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* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* Carnegie Mellon requests users of this software to return to
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*
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* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
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* School of Computer Science
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* Carnegie Mellon University
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* Pittsburgh PA 15213-3890
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*
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* any improvements or extensions that they make and grant Carnegie the
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* rights to redistribute these changes.
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/device.h>
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#include <vm/vm.h>
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#include <machine/autoconf.h>
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#include <machine/rpb.h>
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#include <dev/isa/isareg.h>
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#include <dev/isa/isavar.h>
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#include <dev/pci/pcireg.h>
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#include <dev/pci/pcivar.h>
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#include <alpha/pci/ciareg.h>
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#include <alpha/pci/ciavar.h>
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#if defined(DEC_KN20AA)
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#include <alpha/pci/pci_kn20aa.h>
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#endif
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#if defined(DEC_EB164)
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#include <alpha/pci/pci_eb164.h>
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#endif
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int ciamatch __P((struct device *, void *, void *));
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void ciaattach __P((struct device *, struct device *, void *));
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struct cfattach cia_ca = {
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sizeof(struct cia_softc), ciamatch, ciaattach,
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};
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struct cfdriver cia_cd = {
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NULL, "cia", DV_DULL,
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};
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static int ciaprint __P((void *, const char *pnp));
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/* There can be only one. */
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int ciafound;
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struct cia_config cia_configuration;
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int
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ciamatch(parent, match, aux)
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struct device *parent;
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void *match, *aux;
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{
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struct confargs *ca = aux;
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/* Make sure that we're looking for a CIA. */
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if (strcmp(ca->ca_name, cia_cd.cd_name) != 0)
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return (0);
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if (ciafound)
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return (0);
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return (1);
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}
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/*
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* Set up the chipset's function pointers.
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*/
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void
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cia_init(ccp, mallocsafe)
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struct cia_config *ccp;
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int mallocsafe;
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{
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/*
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* Can't set up SGMAP data here; can be called before malloc().
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* XXX THIS COMMENT NO LONGER MAKES SENSE.
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*/
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ccp->cc_hae_mem = REGVAL(CIA_CSR_HAE_MEM);
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ccp->cc_hae_io = REGVAL(CIA_CSR_HAE_IO);
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if (!ccp->cc_initted) {
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/* don't do these twice since they set up extents */
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ccp->cc_iot = cia_bus_io_init(ccp);
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ccp->cc_memt = cia_bus_mem_init(ccp);
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}
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ccp->cc_mallocsafe = mallocsafe;
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cia_pci_init(&ccp->cc_pc, ccp);
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/* XXX XXX BEGIN XXX XXX */
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{ /* XXX */
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extern vm_offset_t alpha_XXX_dmamap_or; /* XXX */
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alpha_XXX_dmamap_or = 0x40000000; /* XXX */
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} /* XXX */
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/* XXX XXX END XXX XXX */
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ccp->cc_initted = 1;
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}
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void
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ciaattach(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 cia_softc *sc = (struct cia_softc *)self;
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struct cia_config *ccp;
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struct pcibus_attach_args pba;
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/* note that we've attached the chipset; can't have 2 CIAs. */
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ciafound = 1;
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/*
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* set up the chipset's info; done once at console init time
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* (maybe), but doesn't hurt to do twice.
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*/
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ccp = sc->sc_ccp = &cia_configuration;
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cia_init(ccp, 1);
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/* XXX print chipset information */
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printf("\n");
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switch (hwrpb->rpb_type) {
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#if defined(DEC_KN20AA)
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case ST_DEC_KN20AA:
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pci_kn20aa_pickintr(ccp);
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#ifdef EVCNT_COUNTERS
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evcnt_attach(self, "intr", &kn20aa_intr_evcnt);
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#endif
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break;
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#endif
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#if defined(DEC_EB164)
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case ST_EB164:
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pci_eb164_pickintr(ccp);
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#ifdef EVCNT_COUNTERS
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evcnt_attach(self, "intr", &eb164_intr_evcnt);
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#endif
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break;
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#endif
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default:
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panic("ciaattach: shouldn't be here, really...");
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}
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pba.pba_busname = "pci";
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pba.pba_iot = ccp->cc_iot;
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pba.pba_memt = ccp->cc_memt;
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pba.pba_pc = &ccp->cc_pc;
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pba.pba_bus = 0;
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config_found(self, &pba, ciaprint);
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}
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static int
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ciaprint(aux, pnp)
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void *aux;
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const char *pnp;
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{
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register struct pcibus_attach_args *pba = aux;
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/* only PCIs can attach to CIAs; easy. */
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if (pnp)
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printf("%s at %s", pba->pba_busname, pnp);
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printf(" bus %d", pba->pba_bus);
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return (UNCONF);
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}
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