154 lines
4.3 KiB
C
154 lines
4.3 KiB
C
/* $NetBSD: pcib.c,v 1.15 2003/07/15 01:26:33 lukem 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.
|
|
*
|
|
* 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 REGENTS 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.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__KERNEL_RCSID(0, "$NetBSD: pcib.c,v 1.15 2003/07/15 01:26:33 lukem Exp $");
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/device.h>
|
|
|
|
#include <machine/bus.h>
|
|
|
|
#include <dev/isa/isavar.h>
|
|
|
|
#include <dev/pci/pcivar.h>
|
|
#include <dev/pci/pcireg.h>
|
|
|
|
#include <dev/pci/pcidevs.h>
|
|
|
|
#include "isa.h"
|
|
|
|
int pcibmatch __P((struct device *, struct cfdata *, void *));
|
|
void pcibattach __P((struct device *, struct device *, void *));
|
|
|
|
struct pcib_softc {
|
|
struct device sc_dev;
|
|
struct bebox_isa_chipset sc_chipset;
|
|
};
|
|
|
|
CFATTACH_DECL(pcib, sizeof(struct pcib_softc),
|
|
pcibmatch, pcibattach, NULL, NULL);
|
|
|
|
void pcib_callback __P((struct device *));
|
|
int pcib_print __P((void *, const char *));
|
|
|
|
int
|
|
pcibmatch(parent, match, aux)
|
|
struct device *parent;
|
|
struct cfdata *match;
|
|
void *aux;
|
|
{
|
|
struct pci_attach_args *pa = aux;
|
|
|
|
/*
|
|
* Match SIO(82378ZB) PCI-ISA bridge.
|
|
*/
|
|
if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_INTEL ||
|
|
PCI_PRODUCT(pa->pa_id) != PCI_PRODUCT_INTEL_SIO)
|
|
return (0);
|
|
|
|
return (1);
|
|
}
|
|
|
|
void
|
|
pcibattach(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, pcib_callback);
|
|
}
|
|
|
|
void
|
|
pcib_callback(self)
|
|
struct device *self;
|
|
{
|
|
struct pcib_softc *sc = (struct pcib_softc *)self;
|
|
struct isabus_attach_args iba;
|
|
|
|
/*
|
|
* Attach the ISA bus behind this bridge.
|
|
*/
|
|
memset(&iba, 0, sizeof(iba));
|
|
iba.iba_busname = "isa";
|
|
iba.iba_ic = &sc->sc_chipset;
|
|
iba.iba_iot = &bebox_isa_io_bs_tag;
|
|
iba.iba_memt = &bebox_isa_mem_bs_tag;
|
|
#if NISA > 0
|
|
iba.iba_dmat = &isa_bus_dma_tag;
|
|
|
|
#if 0
|
|
/*
|
|
* XXX THIS WILL NOT WORK, BUT ADDING SUPPORT FOR HIGHPAGE MIGHT BE
|
|
* XXX WORTH WHILE EVENTUALLY.
|
|
*/
|
|
#define SIO_DMAHIGHPAGE 0x480
|
|
if (bus_space_map(iba.iba_iot, SIO_DMAHIGHPAGE, 0xf, 0,
|
|
(bus_space_handle_t *)&iba.iba_ic))
|
|
panic("pcib_callback: can't map DMA high page registers");
|
|
#endif
|
|
#endif
|
|
config_found(&sc->sc_dev, &iba, pcib_print);
|
|
}
|
|
|
|
int
|
|
pcib_print(aux, pnp)
|
|
void *aux;
|
|
const char *pnp;
|
|
{
|
|
|
|
/* Only ISAs can attach to pcib's; easy. */
|
|
if (pnp)
|
|
aprint_normal("isa at %s", pnp);
|
|
return (UNCONF);
|
|
}
|