180 lines
4.1 KiB
C
180 lines
4.1 KiB
C
/* $NetBSD: cia.c,v 1.2 1996/03/17 01:06:31 thorpej Exp $ */
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/*
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* Copyright (c) 1995 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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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 *, char *pnp));
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#define REGVAL(r) (*(int32_t *)phystok0seg(r))
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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 cfdata *cf = match;
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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)
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struct cia_config *ccp;
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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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*/
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ccp->cc_conffns = &cia_conf_fns;
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ccp->cc_confarg = ccp;
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ccp->cc_dmafns = &cia_dma_fns;
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ccp->cc_dmaarg = ccp;
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/* Interrupt routines set up in 'attach' */
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ccp->cc_memfns = &cia_mem_fns;
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ccp->cc_memarg = ccp;
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ccp->cc_piofns = &cia_pio_fns;
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ccp->cc_pioarg = ccp;
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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 confargs *ca = aux;
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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 pci_attach_args pa;
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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);
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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->cc_conffns, ccp->cc_confarg,
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ccp->cc_piofns, ccp->cc_pioarg,
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&ccp->cc_intrfns, &ccp->cc_intrarg);
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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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default:
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panic("ciaattach: shouldn't be here, really...");
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}
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pa.pa_bus = 0;
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pa.pa_maxdev = 32;
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pa.pa_burstlog2 = 8;
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pa.pa_conffns = ccp->cc_conffns;
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pa.pa_confarg = ccp->cc_confarg;
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pa.pa_dmafns = ccp->cc_dmafns;
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pa.pa_dmaarg = ccp->cc_dmaarg;
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pa.pa_intrfns = ccp->cc_intrfns;
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pa.pa_intrarg = ccp->cc_intrarg;
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pa.pa_memfns = ccp->cc_memfns;
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pa.pa_memarg = ccp->cc_memarg;
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pa.pa_piofns = ccp->cc_piofns;
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pa.pa_pioarg = ccp->cc_pioarg;
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config_found(self, &pa, 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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char *pnp;
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{
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register struct pci_attach_args *pa = aux;
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/* only PCIs can attach to CIAs; easy. */
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if (pnp)
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printf("pci at %s", pnp);
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printf(" bus %d", pa->pa_bus);
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return (UNCONF);
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}
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