NetBSD/sys/arch/alpha/tlsb/gbus.c

132 lines
3.8 KiB
C

/* $NetBSD: gbus.c,v 1.4 1997/04/07 23:41:05 cgd Exp $ */
/*
* Copyright (c) 1997 by Matthew Jacob
* NASA AMES Research Center.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice immediately at the beginning of the file, without modification,
* this list of conditions, and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*
* Autoconfiguration and support routines for the Gbus: the internal
* bus on AlphaServer CPU modules.
*/
#include <machine/options.h> /* Config options headers */
#include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
__KERNEL_RCSID(0, "$NetBSD: gbus.c,v 1.4 1997/04/07 23:41:05 cgd Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <machine/autoconf.h>
#include <machine/rpb.h>
#include <machine/pte.h>
#include <alpha/tlsb/tlsbreg.h>
#include <alpha/tlsb/tlsbvar.h>
extern int cputype;
#define KV(_addr) ((caddr_t)ALPHA_PHYS_TO_K0SEG((_addr)))
struct gbus_softc {
struct device sc_dev;
int sc_tlsbnode; /* node on the TurboLaser */
};
static int gbusmatch __P((struct device *, struct cfdata *, void *));
static void gbusattach __P((struct device *, struct device *, void *));
struct cfattach gbus_ca = {
sizeof(struct gbus_softc), gbusmatch, gbusattach
};
struct cfdriver gbus_cd = {
NULL, "gbus", DV_DULL,
};
static int gbusprint __P((void *, const char *));
void gbus_intr_establish __P((struct confargs *, int (*)(void *), void *));
void gbus_intr_disestablish __P((struct confargs *));
caddr_t gbus_cvtaddr __P((struct confargs *));
int gbus_matchname __P((struct confargs *, char *));
static int
gbusprint(aux, cp)
void *aux;
const char *cp;
{
return (QUIET);
}
static int
gbusmatch(parent, cf, aux)
struct device *parent;
struct cfdata *cf;
void *aux;
{
struct tlsb_dev_attach_args *ta = aux;
extern struct cfdriver tlsb_cd;
/*
* Make sure we're looking for a Gbus.
* Right now, only Gbus could be a
* child of a TLSB CPU Node.
*/
if (TLDEV_ISCPU(ta->ta_dtype) &&
parent->dv_cfdata->cf_driver == &tlsb_cd)
return (1);
return (0);
}
static void
gbusattach(parent, self, aux)
struct device *parent;
struct device *self;
void *aux;
{
struct confargs nca;
struct gbus_softc *sc = (struct gbus_softc *)self;
struct tlsb_dev_attach_args *ta = aux;
printf("\n");
sc->sc_dev = *self;
sc->sc_tlsbnode = ta->ta_node;
/* Attach the clock. */
nca.ca_name = "mcclock";
nca.ca_slot = -1;
nca.ca_offset = 0x20000000;
nca.ca_bus = NULL;
if (!config_found(self, &nca, gbusprint))
printf("no clock on %s\n", self->dv_xname);
}