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

137 lines
4.0 KiB
C

/* $NetBSD: gbus.c,v 1.18 2005/12/11 12:16:21 christos 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 1.18 2005/12/11 12:16:21 christos 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 *));
CFATTACH_DECL(gbus, sizeof(struct gbus_softc),
gbusmatch, gbusattach, NULL, NULL);
static int gbusprint __P((void *, const char *));
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)
aprint_normal("%s at %s", ga->ga_name, pnp);
aprint_normal(" 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;
int locs[GBUSCF_NLOCS];
printf("\n");
sc->sc_tlsbnode = ta->ta_node;
/* Attach the children. */
for (ga = gbus_children; ga->ga_name != NULL; ga++) {
locs[GBUSCF_OFFSET] = ga->ga_offset;
(void) config_found_sm_loc(self, "gbus", locs, ga,
gbusprint, config_stdsubmatch);
}
}