NetBSD/sys/arch/alpha/pci/cia.c

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/* $NetBSD: cia.c,v 1.1 1995/11/23 02:37:24 cgd Exp $ */
/*
* Copyright (c) 1995 Carnegie-Mellon University.
* All rights reserved.
*
* Author: Chris G. Demetriou
*
* Permission to use, copy, modify and distribute this software and
* its documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/device.h>
#include <vm/vm.h>
#include <machine/autoconf.h>
#include <machine/rpb.h>
#include <dev/isa/isareg.h>
#include <dev/isa/isavar.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <alpha/pci/ciareg.h>
#include <alpha/pci/ciavar.h>
#if defined(DEC_KN20AA)
#include <alpha/pci/pci_kn20aa.h>
#endif
int ciamatch __P((struct device *, void *, void *));
void ciaattach __P((struct device *, struct device *, void *));
struct cfdriver ciacd = {
NULL, "cia", ciamatch, ciaattach, DV_DULL,
sizeof(struct cia_softc)
};
static int ciaprint __P((void *, char *pnp));
#define REGVAL(r) (*(int32_t *)phystok0seg(r))
/* There can be only one. */
int ciafound;
struct cia_config cia_configuration;
int
ciamatch(parent, match, aux)
struct device *parent;
void *match, *aux;
{
struct cfdata *cf = match;
struct confargs *ca = aux;
/* Make sure that we're looking for a CIA. */
if (strcmp(ca->ca_name, ciacd.cd_name) != 0)
return (0);
if (ciafound)
return (0);
return (1);
}
/*
* Set up the chipset's function pointers.
*/
void
cia_init(ccp)
struct cia_config *ccp;
{
/*
* Can't set up SGMAP data here; can be called before malloc().
*/
ccp->cc_conffns = &cia_conf_fns;
ccp->cc_confarg = ccp;
ccp->cc_dmafns = &cia_dma_fns;
ccp->cc_dmaarg = ccp;
/* Interrupt routines set up in 'attach' */
ccp->cc_memfns = &cia_mem_fns;
ccp->cc_memarg = ccp;
ccp->cc_piofns = &cia_pio_fns;
ccp->cc_pioarg = ccp;
}
void
ciaattach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct confargs *ca = aux;
struct cia_softc *sc = (struct cia_softc *)self;
struct cia_config *ccp;
struct pci_attach_args pa;
/* note that we've attached the chipset; can't have 2 CIAs. */
ciafound = 1;
/*
* set up the chipset's info; done once at console init time
* (maybe), but doesn't hurt to do twice.
*/
ccp = sc->sc_ccp = &cia_configuration;
cia_init(ccp);
/* XXX print chipset information */
printf("\n");
switch (hwrpb->rpb_type) {
#if defined(DEC_KN20AA)
case ST_DEC_KN20AA:
pci_kn20aa_pickintr(ccp->cc_conffns, ccp->cc_confarg,
ccp->cc_piofns, ccp->cc_pioarg,
&ccp->cc_intrfns, &ccp->cc_intrarg);
#ifdef EVCNT_COUNTERS
evcnt_attach(self, "intr", &kn20aa_intr_evcnt);
#endif
break;
#endif
default:
panic("ciaattach: shouldn't be here, really...");
}
pa.pa_bus = 0;
pa.pa_maxdev = 32;
pa.pa_burstlog2 = 8;
pa.pa_conffns = ccp->cc_conffns;
pa.pa_confarg = ccp->cc_confarg;
pa.pa_dmafns = ccp->cc_dmafns;
pa.pa_dmaarg = ccp->cc_dmaarg;
pa.pa_intrfns = ccp->cc_intrfns;
pa.pa_intrarg = ccp->cc_intrarg;
pa.pa_memfns = ccp->cc_memfns;
pa.pa_memarg = ccp->cc_memarg;
pa.pa_piofns = ccp->cc_piofns;
pa.pa_pioarg = ccp->cc_pioarg;
config_found(self, &pa, ciaprint);
}
static int
ciaprint(aux, pnp)
void *aux;
char *pnp;
{
register struct pci_attach_args *pa = aux;
/* only PCIs can attach to CIAs; easy. */
if (pnp)
printf("pci at %s", pnp);
printf(" bus %d", pa->pa_bus);
return (UNCONF);
}