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/* $NetBSD: lca.c,v 1.1 1995/11/23 02:37:38 cgd Exp $ */
/*
* Copyright (c) 1995 Carnegie-Mellon University.
* All rights reserved.
*
* Author: Jeffrey Hsu
*
* 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/lcareg.h>
#include <alpha/pci/lcavar.h>
int lcamatch __P((struct device *, void *, void *));
void lcaattach __P((struct device *, struct device *, void *));
struct cfdriver lcacd = {
NULL, "lca", lcamatch, lcaattach, DV_DULL,
sizeof(struct lca_softc)
};
static int lcaprint __P((void *, char *pnp));
/* There can be only one. */
int lcafound;
struct lca_config lca_configuration;
int
lcamatch(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 LCA. */
if (strcmp(ca->ca_name, lcacd.cd_name) != 0)
return (0);
if (lcafound)
return (0);
return (1);
}
/*
* Set up the chipset's function pointers.
*/
void
lca_init(lcp)
struct lca_config *lcp;
{
/*
* Can't set up SGMAP data here; can be called before malloc().
*/
lcp->lc_conffns = &lca_conf_fns;
lcp->lc_confarg = lcp;
lcp->lc_dmafns = &lca_dma_fns;
lcp->lc_dmaarg = lcp;
/* Interrupt routines set up in 'attach' */
lcp->lc_memfns = &lca_mem_fns;
lcp->lc_memarg = lcp;
lcp->lc_piofns = &lca_pio_fns;
lcp->lc_pioarg = lcp;
/*
printf("lca_init: before IOC_HAE=0x%x\n", REGVAL(LCA_IOC_HAE));
REGVAL(LCA_IOC_HAE) = 0; */
REGVAL(LCA_IOC_CONF) = 0;
/* Turn off DMA window enables in Window Base Registers */
/* REGVAL(LCA_IOC_W_BASE0) = 0;
REGVAL(LCA_IOC_W_BASE1) = 0; */
wbflush();
}
#ifdef notdef
void
lca_init_sgmap(lcp)
struct lca_config *lcp;
{
/* XXX */
lcp->lc_sgmap = malloc(1024 * 8, M_DEVBUF, M_WAITOK);
bzero(lcp->lc_sgmap, 1024 * 8); /* clear all entries. */
REGVAL(LCA_IOC_W_BASE0) = 0;
wbflush();
/* Set up Translated Base Register 1; translate to sybBus addr 0. */
/* check size against APEC XXX JH */
REGVAL(LCA_IOC_T_BASE_0) = vtophys(lcp->lc_sgmap) >> 1;
/* Set up PCI mask register 1; map 8MB space. */
REGVAL(LCA_IOC_W_MASK0) = 0x00700000;
/* Enable window 1; from PCI address 8MB, direct mapped. */
REGVAL(LCA_IOC_W_BASE0) = 0x300800000;
wbflush();
}
#endif
void
lcaattach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct confargs *ca = aux;
struct lca_softc *sc = (struct lca_softc *)self;
struct lca_config *lcp;
struct pci_attach_args pa;
/* note that we've attached the chipset; can't have 2 LCAs. */
/* Um, not sure about this. XXX JH */
lcafound = 1;
/*
* set up the chipset's info; done once at console init time
* (maybe), but doesn't hurt to do twice.
*/
lcp = sc->sc_lcp = &lca_configuration;
lca_init(lcp);
#ifdef notdef
lca_init_sgmap(lcp);
#endif
/* XXX print chipset information */
printf("\n");
switch (hwrpb->rpb_type) {
#if defined(DEC_AXPPCI_33)
case ST_DEC_AXPPCI_33:
pci_axppci_33_pickintr(lcp->lc_conffns, lcp->lc_confarg,
lcp->lc_piofns, lcp->lc_pioarg,
&lcp->lc_intrfns, &lcp->lc_intrarg);
break;
#endif
default:
panic("lcaattach: shouldn't be here, really...");
}
pa.pa_bus = 0;
pa.pa_maxdev = 13;
pa.pa_burstlog2 = 8;
pa.pa_conffns = lcp->lc_conffns;
pa.pa_confarg = lcp->lc_confarg;
pa.pa_dmafns = lcp->lc_dmafns;
pa.pa_dmaarg = lcp->lc_dmaarg;
pa.pa_intrfns = lcp->lc_intrfns;
pa.pa_intrarg = lcp->lc_intrarg;
pa.pa_memfns = lcp->lc_memfns;
pa.pa_memarg = lcp->lc_memarg;
pa.pa_piofns = lcp->lc_piofns;
pa.pa_pioarg = lcp->lc_pioarg;
config_found(self, &pa, lcaprint);
}
static int
lcaprint(aux, pnp)
void *aux;
char *pnp;
{
register struct pci_attach_args *pa = aux;
/* what does this do? XXX JH */
/* only PCIs can attach to LCAes; easy. */
if (pnp)
printf("pci at %s", pnp);
printf(" bus %d", pa->pa_bus);
return (UNCONF);
}
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