fed8edf563
the ISA bus. - Don't expect that a PCI:ISA bridge will have a correct class value; if we're checking PCI IDs, only depend on these. This should fix the loss of ISA on machines with PCI:EISA bridges like the AS4100.
129 lines
3.7 KiB
C
129 lines
3.7 KiB
C
/*-
|
|
* Copyright (c) 1994,1995 Stefan Esser, Wolfgang StanglMeier
|
|
* Copyright (c) 2000 Michael Smith <msmith@freebsd.org>
|
|
* Copyright (c) 2000 BSDi
|
|
* 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, 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
/*
|
|
* PCI:EISA bridge support
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/bus.h>
|
|
|
|
#include <pci/pcivar.h>
|
|
#include <pci/pcireg.h>
|
|
|
|
static int eisab_probe(device_t dev);
|
|
static int eisab_attach(device_t dev);
|
|
|
|
static device_method_t eisab_methods[] = {
|
|
/* Device interface */
|
|
DEVMETHOD(device_probe, eisab_probe),
|
|
DEVMETHOD(device_attach, eisab_attach),
|
|
DEVMETHOD(device_shutdown, bus_generic_shutdown),
|
|
DEVMETHOD(device_suspend, bus_generic_suspend),
|
|
DEVMETHOD(device_resume, bus_generic_resume),
|
|
|
|
/* Bus interface */
|
|
DEVMETHOD(bus_print_child, bus_generic_print_child),
|
|
DEVMETHOD(bus_alloc_resource, bus_generic_alloc_resource),
|
|
DEVMETHOD(bus_release_resource, bus_generic_release_resource),
|
|
DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
|
|
DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
|
|
DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
|
|
DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
|
|
|
|
{ 0, 0 }
|
|
};
|
|
|
|
static driver_t eisab_driver = {
|
|
"eisab",
|
|
eisab_methods,
|
|
0,
|
|
};
|
|
|
|
static devclass_t eisab_devclass;
|
|
|
|
DRIVER_MODULE(eisab, pci, eisab_driver, eisab_devclass, 0, 0);
|
|
|
|
static int
|
|
eisab_probe(device_t dev)
|
|
{
|
|
int matched = 0;
|
|
|
|
/*
|
|
* Generic match by class/subclass.
|
|
*/
|
|
if ((pci_get_class(dev) == PCIC_BRIDGE) &&
|
|
(pci_get_subclass(dev) == PCIS_BRIDGE_EISA))
|
|
matched = 1;
|
|
|
|
/*
|
|
* Some bridges don't correctly report their class.
|
|
*/
|
|
switch (pci_get_devid(dev)) {
|
|
case 0x04828086: /* reports PCI-HOST class (!) */
|
|
matched = 1;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (matched) {
|
|
device_set_desc(dev, "PCI-EISA bridge");
|
|
return(-10000);
|
|
}
|
|
return(ENXIO);
|
|
}
|
|
|
|
static int
|
|
eisab_attach(device_t dev)
|
|
{
|
|
device_t child;
|
|
|
|
/*
|
|
* Attach an EISA bus. Note that we can only have one EISA bus.
|
|
*/
|
|
child = device_add_child(dev, "eisa", 0);
|
|
if (child != NULL)
|
|
bus_generic_attach(dev);
|
|
|
|
/*
|
|
* Attach an ISA bus as well (should this be a child of EISA?)
|
|
*/
|
|
child = device_add_child(dev, "isa", 0);
|
|
if (child != NULL)
|
|
bus_generic_attach(dev);
|
|
|
|
return(0);
|
|
}
|
|
|