150 lines
4.2 KiB
C
150 lines
4.2 KiB
C
/* $NetBSD: gbus.c,v 1.10 2001/07/19 20:34:08 thorpej 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 <sys/cdefs.h> /* RCS ID & Copyright macro defns */
|
|
|
|
__KERNEL_RCSID(0, "$NetBSD: gbus.c,v 1.10 2001/07/19 20:34:08 thorpej Exp $");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/device.h>
|
|
|
|
#include <machine/rpb.h>
|
|
#include <machine/pte.h>
|
|
|
|
#include <alpha/tlsb/gbusreg.h>
|
|
#include <alpha/tlsb/gbusvar.h>
|
|
|
|
#include <alpha/tlsb/tlsbreg.h>
|
|
#include <alpha/tlsb/tlsbvar.h>
|
|
|
|
#include "locators.h"
|
|
|
|
#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
|
|
};
|
|
|
|
static int gbusprint __P((void *, const char *));
|
|
static int gbussubmatch __P((struct device *, struct cfdata *, void *));
|
|
|
|
struct gbus_attach_args gbus_children[] = {
|
|
{ "zsc", GBUS_DUART0_OFFSET },
|
|
{ "zsc", GBUS_DUART1_OFFSET },
|
|
{ "mcclock", GBUS_CLOCK_OFFSET },
|
|
{ NULL, 0 },
|
|
};
|
|
|
|
static int
|
|
gbusprint(aux, pnp)
|
|
void *aux;
|
|
const char *pnp;
|
|
{
|
|
struct gbus_attach_args *ga = aux;
|
|
|
|
if (pnp)
|
|
printf("%s at %s", ga->ga_name, pnp);
|
|
printf(" offset 0x%lx", ga->ga_offset);
|
|
return (UNCONF);
|
|
}
|
|
|
|
static int
|
|
gbusmatch(parent, cf, aux)
|
|
struct device *parent;
|
|
struct cfdata *cf;
|
|
void *aux;
|
|
{
|
|
struct tlsb_dev_attach_args *ta = aux;
|
|
|
|
/*
|
|
* Make sure we're looking for a Gbus. The Gbus only
|
|
* "exists" on the CPU module that holds the primary CPU.
|
|
*
|
|
* Compute which node this should exist on by dividing the
|
|
* primary CPU by 2 (since there are up to 2 CPUs per CPU
|
|
* module).
|
|
*/
|
|
if (TLDEV_ISCPU(ta->ta_dtype) &&
|
|
ta->ta_node == (hwrpb->rpb_primary_cpu_id / 2))
|
|
return (1);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
gbusattach(parent, self, aux)
|
|
struct device *parent;
|
|
struct device *self;
|
|
void *aux;
|
|
{
|
|
struct gbus_softc *sc = (struct gbus_softc *)self;
|
|
struct tlsb_dev_attach_args *ta = aux;
|
|
struct gbus_attach_args *ga;
|
|
|
|
printf("\n");
|
|
|
|
sc->sc_tlsbnode = ta->ta_node;
|
|
|
|
/* Attach the children. */
|
|
for (ga = gbus_children; ga->ga_name != NULL; ga++)
|
|
(void) config_found_sm(self, ga, gbusprint, gbussubmatch);
|
|
}
|
|
|
|
static int
|
|
gbussubmatch(parent, cf, aux)
|
|
struct device *parent;
|
|
struct cfdata *cf;
|
|
void *aux;
|
|
{
|
|
struct gbus_attach_args *ga = aux;
|
|
|
|
if (cf->cf_loc[GBUSCF_OFFSET] != GBUSCF_OFFSET_DEFAULT &&
|
|
cf->cf_loc[GBUSCF_OFFSET] != ga->ga_offset)
|
|
return (0);
|
|
|
|
return ((*cf->cf_attach->ca_match)(parent, cf, aux));
|
|
}
|