NetBSD/sys/arch/alpha/pci/a12c.c

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/* $NetBSD: a12c.c,v 1.10 2002/05/16 01:01:31 thorpej Exp $ */
/* [Notice revision 2.2]
* Copyright (c) 1997, 1998 Avalon Computer Systems, Inc.
* All rights reserved.
*
* Author: Ross Harvey
*
* 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 and
* author notice, 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. Neither the name of Avalon Computer Systems, Inc. nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
* 4. This copyright will be assigned to The NetBSD Foundation on
* 1/1/2000 unless these terms (including possibly the assignment
* date) are updated in writing by Avalon prior to the latest specified
* assignment date.
*
* THIS SOFTWARE IS PROVIDED BY AVALON COMPUTER SYSTEMS, INC. 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 AVALON OR THE 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.
*/
#include "opt_avalon_a12.h" /* Config options headers */
#include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
__KERNEL_RCSID(0, "$NetBSD: a12c.c,v 1.10 2002/05/16 01:01:31 thorpej Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/device.h>
#include <uvm/uvm_extern.h>
#include <machine/autoconf.h>
#include <machine/rpb.h>
#include <dev/isa/isareg.h>
#include <dev/isa/isavar.h>
#include <dev/dec/clockvar.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <alpha/pci/a12creg.h>
#include <alpha/pci/a12cvar.h>
#include <alpha/pci/pci_a12.h>
#define A12C() /* Generate ctags(1) key */
int a12cmatch __P((struct device *, struct cfdata *, void *));
void a12cattach __P((struct device *, struct device *, void *));
struct cfattach a12c_ca = {
sizeof(struct a12c_softc), a12cmatch, a12cattach,
};
extern struct cfdriver a12c_cd;
static int a12cprint __P((void *, const char *pnp));
static const struct clocktime zeroct;
static void noclock_init(struct device *);
static void noclock_get(struct device *, time_t, struct clocktime *);
static void noclock_set(struct device *, struct clocktime *);
static const struct clockfns noclock_fns = {
noclock_init, noclock_get, noclock_set
};
/* There can be only one. */
int a12cfound;
struct a12c_config a12c_configuration;
int
a12cmatch(parent, match, aux)
struct device *parent;
struct cfdata *match;
void *aux;
{
struct mainbus_attach_args *ma = aux;
return cputype == ST_AVALON_A12
&& strcmp(ma->ma_name, a12c_cd.cd_name) == 0
&& !a12cfound;
}
void
a12c_init(ccp, mallocsafe)
struct a12c_config *ccp;
int mallocsafe;
{
if (!ccp->ac_initted) {
/* someday these may allocate memory, do once only */
ccp->ac_iot = 0;
ccp->ac_memt = a12c_bus_mem_init(ccp);
}
ccp->ac_mallocsafe = mallocsafe;
a12c_pci_init(&ccp->ac_pc, ccp);
a12c_dma_init(ccp);
ccp->ac_initted = 1;
}
void
a12cattach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct a12c_softc *sc = (struct a12c_softc *)self;
struct a12c_config *ccp;
struct pcibus_attach_args pba;
extern const struct clockfns *clockfns; /* XXX? */
/* note that we've attached the chipset; can't have 2 A12Cs. */
a12cfound = 1;
/*
* set up the chipset's info; done once at console init time
* (maybe), but we must do it here as well to take care of things
* that need to use memory allocation.
*/
ccp = sc->sc_ccp = &a12c_configuration;
a12c_init(ccp, 1);
/* XXX print chipset information */
printf(": driver %s over logic %x\n", "$Revision: 1.10 $",
A12_ALL_EXTRACT(REGVAL(A12_VERS)));
pci_a12_pickintr(ccp);
clockfns = &noclock_fns; /* XXX? */
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memset(&pba, 0, sizeof(pba));
pba.pba_busname = "pci";
pba.pba_iot = 0;
pba.pba_memt = ccp->ac_memt;
pba.pba_dmat = &ccp->ac_dmat_direct;
pba.pba_pc = &ccp->ac_pc;
pba.pba_bus = 0;
pba.pba_bridgetag = NULL;
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pba.pba_flags = PCI_FLAGS_MEM_ENABLED |
PCI_FLAGS_MRL_OKAY | PCI_FLAGS_MRM_OKAY | PCI_FLAGS_MWI_OKAY;
config_found(self, &pba, a12cprint);
pba.pba_busname = "xb";
pba.pba_bus = 1;
config_found(self, &pba, NULL);
pba.pba_busname = "a12dc";
pba.pba_bus = 2;
config_found(self, &pba, NULL);
}
static int
a12cprint(aux, pnp)
void *aux;
const char *pnp;
{
register struct pcibus_attach_args *pba = aux;
/* can attach xbar or pci to a12c */
if (pnp)
printf("%s at %s", pba->pba_busname, pnp);
printf(" bus %d", pba->pba_bus);
return (UNCONF);
}
static void noclock_init(struct device *dev) {
dev = dev;
}
static void
noclock_get(struct device *dev, time_t t, struct clocktime *ct)
{
*ct = zeroct;
}
static void
noclock_set(struct device *dev, struct clocktime *ct)
{
if(dev!=NULL)
*ct = *ct;
}