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/* $OpenBSD: cia.c,v 1.8 1998/07/01 05:32:35 angelos Exp $ */
/* $NetBSD: cia.c,v 1.15 1996/12/05 01:39:35 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/ciareg.h>
#include <alpha/pci/ciavar.h>
#if defined(DEC_KN20AA)
#include <alpha/pci/pci_kn20aa.h>
#endif
#if defined(DEC_EB164)
#include <alpha/pci/pci_eb164.h>
#endif
#ifdef __BROKEN_INDIRECT_CONFIG
int ciamatch __P((struct device *, void *, void *));
#else
int ciamatch __P((struct device *, struct cfdata *, void *));
#endif
void ciaattach __P((struct device *, struct device *, void *));
struct cfattach cia_ca = {
sizeof(struct cia_softc), ciamatch, ciaattach,
};
struct cfdriver cia_cd = {
NULL, "cia", DV_DULL,
};
int ciaprint __P((void *, const char *pnp));
/* There can be only one. */
int ciafound;
struct cia_config cia_configuration;
int
ciamatch(parent, match, aux)
struct device *parent;
#ifdef __BROKEN_INDIRECT_CONFIG
void *match;
#else
struct cfdata *match;
#endif
void *aux;
{
struct confargs *ca = aux;
/* Make sure that we're looking for a CIA. */
if (strcmp(ca->ca_name, cia_cd.cd_name) != 0)
return (0);
if (ciafound)
return (0);
return (1);
}
/*
* Set up the chipset's function pointers.
*/
void
cia_init(ccp, mallocsafe)
struct cia_config *ccp;
int mallocsafe;
{
/*
* Can't set up SGMAP data here; can be called before malloc().
* XXX THIS COMMENT NO LONGER MAKES SENSE.
*/
ccp->cc_hae_mem = REGVAL(CIA_CSR_HAE_MEM);
ccp->cc_hae_io = REGVAL(CIA_CSR_HAE_IO);
/*
* Determine if we have a Pyxis. Only two systypes can
* have this: the EB164 systype (AlphaPC164LX and AlphaPC164SX)
* and the DEC_550 systype (Miata).
*/
if ((hwrpb->rpb_type == ST_EB164 &&
(hwrpb->rpb_variation & SV_ST_MASK) >= SV_ST_ALPHAPC164LX_400) ||
hwrpb->rpb_type == ST_DEC_550)
ccp->cc_flags |= CCF_ISPYXIS;
/*
* ALCOR/ALCOR2 Revisions >= 2 and Pyxis have the CNFG register.
*/
if (ccp->cc_rev >= 2 || (ccp->cc_flags & CCF_ISPYXIS) != 0)
ccp->cc_cnfg = REGVAL(CIA_CSR_CNFG);
else
ccp->cc_cnfg = 0;
if (!ccp->cc_initted) {
/* don't do these twice since they set up extents */
ccp->cc_iot = cia_bus_io_init(ccp);
ccp->cc_memt = cia_bus_mem_init(ccp);
}
ccp->cc_mallocsafe = mallocsafe;
cia_pci_init(&ccp->cc_pc, ccp);
/* XXX XXX BEGIN XXX XXX */
{ /* XXX */
extern vm_offset_t alpha_XXX_dmamap_or; /* XXX */
alpha_XXX_dmamap_or = 0x40000000; /* XXX */
} /* XXX */
/* XXX XXX END XXX XXX */
ccp->cc_initted = 1;
}
void
ciaattach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct cia_softc *sc = (struct cia_softc *)self;
struct cia_config *ccp;
struct pcibus_attach_args pba;
/* 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, 1);
/* XXX print chipset information */
printf("\n");
switch (hwrpb->rpb_type) {
#if defined(DEC_KN20AA)
case ST_DEC_KN20AA:
pci_kn20aa_pickintr(ccp);
#ifdef EVCNT_COUNTERS
evcnt_attach(self, "intr", &kn20aa_intr_evcnt);
#endif
break;
#endif
#if defined(DEC_EB164)
case ST_EB164:
pci_eb164_pickintr(ccp);
#ifdef EVCNT_COUNTERS
evcnt_attach(self, "intr", &eb164_intr_evcnt);
#endif
break;
#endif
default:
panic("ciaattach: shouldn't be here, really...");
}
pba.pba_busname = "pci";
pba.pba_iot = ccp->cc_iot;
pba.pba_memt = ccp->cc_memt;
pba.pba_pc = &ccp->cc_pc;
pba.pba_bus = 0;
config_found(self, &pba, ciaprint);
}
int
ciaprint(aux, pnp)
void *aux;
const char *pnp;
{
register struct pcibus_attach_args *pba = aux;
/* only PCIs can attach to CIAs; easy. */
if (pnp)
printf("%s at %s", pba->pba_busname, pnp);
printf(" bus %d", pba->pba_bus);
return (UNCONF);
}
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