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/* $NetBSD: apecs.c,v 1.7 1996/04/12 06:08:01 cgd Exp $ */
/*
* Copyright (c) 1995, 1996 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/apecsreg.h>
#include <alpha/pci/apecsvar.h>
#include <alpha/pci/pci_2100_a50.h>
int apecsmatch __P((struct device *, void *, void *));
void apecsattach __P((struct device *, struct device *, void *));
struct cfattach apecs_ca = {
sizeof(struct apecs_softc), apecsmatch, apecsattach,
};
struct cfdriver apecs_cd = {
NULL, "apecs", DV_DULL,
};
static int apecsprint __P((void *, char *pnp));
/* There can be only one. */
int apecsfound;
struct apecs_config apecs_configuration;
int
apecsmatch(parent, match, aux)
struct device *parent;
void *match, *aux;
{
struct cfdata *cf = match;
struct confargs *ca = aux;
/* Make sure that we're looking for an APECS. */
if (strcmp(ca->ca_name, apecs_cd.cd_name) != 0)
return (0);
if (apecsfound)
return (0);
return (1);
}
/*
* Set up the chipset's function pointers.
*/
void
apecs_init(acp)
struct apecs_config *acp;
{
acp->ac_comanche_pass2 =
(REGVAL(COMANCHE_ED) & COMANCHE_ED_PASS2) != 0;
acp->ac_memwidth =
(REGVAL(COMANCHE_GCR) & COMANCHE_GCR_WIDEMEM) != 0 ? 128 : 64;
acp->ac_epic_pass2 =
(REGVAL(EPIC_DCSR) & EPIC_DCSR_PASS2) != 0;
/*
* Can't set up SGMAP data here; can be called before malloc().
*/
apecs_lca_bus_io_init(&acp->ac_bc, acp);
apecs_lca_bus_mem_init(&acp->ac_bc, acp);
apecs_pci_init(&acp->ac_pc, acp);
/* Turn off DMA window enables in PCI Base Reg 1. */
REGVAL(EPIC_PCI_BASE_1) = 0;
wbflush();
/* XXX SGMAP? */
}
void
apecsattach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct apecs_softc *sc = (struct apecs_softc *)self;
struct apecs_config *acp;
struct pcibus_attach_args pba;
/* note that we've attached the chipset; can't have 2 APECSes. */
apecsfound = 1;
/*
* set up the chipset's info; done once at console init time
* (maybe), but doesn't hurt to do twice.
*/
acp = sc->sc_acp = &apecs_configuration;
apecs_init(acp);
/* XXX SGMAP FOO */
printf(": DECchip %s Core Logic chipset\n",
acp->ac_memwidth == 128 ? "21072" : "21071");
printf("%s: DC21071-CA pass %d, %d-bit memory bus\n",
self->dv_xname, acp->ac_comanche_pass2 ? 2 : 1, acp->ac_memwidth);
printf("%s: DC21071-DA pass %d\n", self->dv_xname,
acp->ac_epic_pass2 ? 2 : 1);
/* XXX print bcache size */
if (!acp->ac_epic_pass2)
printf("WARNING: 21071-DA NOT PASS2... NO BETS...\n");
switch (hwrpb->rpb_type) {
#if defined(DEC_2100_A50)
case ST_DEC_2100_A50:
pci_2100_a50_pickintr(acp);
break;
#endif
default:
panic("apecsattach: shouldn't be here, really...");
}
pba.pba_busname = "pci";
pba.pba_bc = &acp->ac_bc;
pba.pba_pc = &acp->ac_pc;
pba.pba_bus = 0;
config_found(self, &pba, apecsprint);
}
static int
apecsprint(aux, pnp)
void *aux;
char *pnp;
{
register struct pcibus_attach_args *pba = aux;
/* only PCIs can attach to APECSes; easy. */
if (pnp)
printf("%s at %s", pba->pba_busname, pnp);
printf(" bus %d", pba->pba_bus);
return (UNCONF);
}
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