NetBSD/sys/arch/i386/pci/pcmb.c

144 lines
4.0 KiB
C

/* $NetBSD: pcmb.c,v 1.2 2001/04/21 19:18:20 jdolecek Exp $ */
/*-
* Copyright (c) 1996, 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe and Jaromir Dolecek.
*
* 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, 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, 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 THE FOUNDATION 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.
*/
/*
* "Driver" for PCI-MCA Bridges.
*/
#include <sys/types.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <machine/bus.h>
#include <dev/mca/mcavar.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcidevs.h>
#include "mca.h"
int pcmbmatch __P((struct device *, struct cfdata *, void *));
void pcmbattach __P((struct device *, struct device *, void *));
struct cfattach pcmb_ca = {
sizeof(struct device), pcmbmatch, pcmbattach
};
void pcmb_callback __P((struct device *));
int pcmb_print __P((void *, const char *));
union pcmb_attach_args {
const char *ma_name; /* XXX should be common */
struct mcabus_attach_args ma_mba;
};
int
pcmbmatch(parent, match, aux)
struct device *parent;
struct cfdata *match;
void *aux;
{
struct pci_attach_args *pa = aux;
/*
* Match anything which claims to be PCI-MCA bridge.
*/
if (PCI_CLASS(pa->pa_class) == PCI_CLASS_BRIDGE
&& PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_BRIDGE_MC)
return (1);
return (0);
}
void
pcmbattach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct pci_attach_args *pa = aux;
char devinfo[256];
printf("\n");
/*
* Just print out a description and defer configuration
* until all PCI devices have been attached.
*/
pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo);
printf("%s: %s (rev. 0x%02x)\n", self->dv_xname, devinfo,
PCI_REVISION(pa->pa_class));
config_defer(self, pcmb_callback);
}
void
pcmb_callback(self)
struct device *self;
{
union pcmb_attach_args ma;
/*
* Attach MCA bus behind this bridge.
*/
ma.ma_mba.mba_busname = "mca";
ma.ma_mba.mba_iot = I386_BUS_SPACE_IO;
ma.ma_mba.mba_memt = I386_BUS_SPACE_MEM;
#if NMCA > 0
ma.ma_mba.mba_dmat = &mca_bus_dma_tag;
#endif
ma.ma_mba.mba_mc = NULL;
ma.ma_mba.mba_bus = 0;
config_found(self, &ma.ma_mba, pcmb_print);
}
int
pcmb_print(aux, pnp)
void *aux;
const char *pnp;
{
union pcmb_attach_args *ma = aux;
if (pnp)
printf("%s at %s", ma->ma_name, pnp);
return (UNCONF);
}