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

225 lines
5.7 KiB
C

/* $NetBSD: pcib.c,v 1.27 2001/11/15 07:03:34 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 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.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: pcib.c,v 1.27 2001/11/15 07:03:34 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 cfattach pcib_ca = {
sizeof(struct device), pcibmatch, pcibattach
};
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;
#if 0
/*
* PCI-ISA bridges are matched on class/subclass.
* This list contains only the bridges where correct
* (or incorrect) behaviour is not yet confirmed.
*/
switch (PCI_VENDOR(pa->pa_id)) {
case PCI_VENDOR_INTEL:
switch (PCI_PRODUCT(pa->pa_id)) {
case PCI_PRODUCT_INTEL_82426EX:
case PCI_PRODUCT_INTEL_82380AB:
return (1);
}
break;
case PCI_VENDOR_UMC:
switch (PCI_PRODUCT(pa->pa_id)) {
case PCI_PRODUCT_UMC_UM8886F:
case PCI_PRODUCT_UMC_UM82C886:
return (1);
}
break;
case PCI_VENDOR_ALI:
switch (PCI_PRODUCT(pa->pa_id)) {
case PCI_PRODUCT_ALI_M1449:
case PCI_PRODUCT_ALI_M1543:
return (1);
}
break;
case PCI_VENDOR_COMPAQ:
switch (PCI_PRODUCT(pa->pa_id)) {
case PCI_PRODUCT_COMPAQ_PCI_ISA_BRIDGE:
return (1);
}
break;
case PCI_VENDOR_VIATECH:
switch (PCI_PRODUCT(pa->pa_id)) {
case PCI_PRODUCT_VIATECH_VT82C570MV:
case PCI_PRODUCT_VIATECH_VT82C586_ISA:
return (1);
}
break;
}
#endif
/*
* some special cases:
*/
switch (PCI_VENDOR(pa->pa_id)) {
case PCI_VENDOR_INTEL:
switch (PCI_PRODUCT(pa->pa_id)) {
case PCI_PRODUCT_INTEL_SIO:
/*
* The Intel SIO identifies itself as a
* miscellaneous prehistoric.
*/
case PCI_PRODUCT_INTEL_82371MX:
/*
* The Intel 82371MX identifies itself erroneously as a
* miscellaneous bridge.
*/
case PCI_PRODUCT_INTEL_82371AB_ISA:
/*
* Some Intel 82371AB PCI-ISA bridge identifies
* itself as miscellaneous bridge.
*/
return (1);
}
break;
case PCI_VENDOR_SIS:
switch (PCI_PRODUCT(pa->pa_id)) {
case PCI_PRODUCT_SIS_85C503:
/*
* The SIS 85C503 identifies itself as a
* miscellaneous prehistoric.
*/
return (1);
}
break;
case PCI_VENDOR_VIATECH:
switch (PCI_PRODUCT(pa->pa_id)) {
case PCI_PRODUCT_VIATECH_VT82C686A_SMB:
/*
* The VIA VT82C686A SMBus Controller itself as
* ISA bridge, but it's wrong !
*/
return (0);
}
}
if (PCI_CLASS(pa->pa_class) == PCI_CLASS_BRIDGE &&
PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_BRIDGE_ISA) {
return (1);
}
return (0);
}
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 isabus_attach_args iba;
/*
* Attach the ISA bus behind this bridge.
*/
memset(&iba, 0, sizeof(iba));
iba.iba_busname = "isa";
iba.iba_iot = I386_BUS_SPACE_IO;
iba.iba_memt = I386_BUS_SPACE_MEM;
#if NISA > 0
iba.iba_dmat = &isa_bus_dma_tag;
#endif
config_found(self, &iba, pcib_print);
}
int
pcib_print(aux, pnp)
void *aux;
const char *pnp;
{
/* Only ISAs can attach to pcib's; easy. */
if (pnp)
printf("isa at %s", pnp);
return (UNCONF);
}