128 lines
3.8 KiB
C
128 lines
3.8 KiB
C
/*-
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* Copyright (c) 1994,1995 Stefan Esser, Wolfgang StanglMeier
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* Copyright (c) 2000 Michael Smith <msmith@freebsd.org>
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* Copyright (c) 2000 BSDi
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/*
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* PCI:EISA bridge support
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*/
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/bus.h>
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#include <dev/pci/pcivar.h>
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#include <dev/pci/pcireg.h>
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static int eisab_probe(device_t dev);
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static int eisab_attach(device_t dev);
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static device_method_t eisab_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, eisab_probe),
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DEVMETHOD(device_attach, eisab_attach),
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DEVMETHOD(device_shutdown, bus_generic_shutdown),
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DEVMETHOD(device_suspend, bus_generic_suspend),
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DEVMETHOD(device_resume, bus_generic_resume),
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/* Bus interface */
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DEVMETHOD(bus_print_child, bus_generic_print_child),
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DEVMETHOD(bus_alloc_resource, bus_generic_alloc_resource),
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DEVMETHOD(bus_release_resource, bus_generic_release_resource),
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DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
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DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
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DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
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DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
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{ 0, 0 }
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};
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static driver_t eisab_driver = {
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"eisab",
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eisab_methods,
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0,
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};
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static devclass_t eisab_devclass;
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DRIVER_MODULE(eisab, pci, eisab_driver, eisab_devclass, 0, 0);
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static int
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eisab_probe(device_t dev)
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{
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int matched = 0;
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/*
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* Generic match by class/subclass.
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*/
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if ((pci_get_class(dev) == PCIC_BRIDGE) &&
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(pci_get_subclass(dev) == PCIS_BRIDGE_EISA))
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matched = 1;
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/*
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* Some bridges don't correctly report their class.
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*/
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switch (pci_get_devid(dev)) {
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case 0x04828086: /* may show up as PCI-HOST or 0:0 */
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matched = 1;
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break;
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default:
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break;
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}
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if (matched) {
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device_set_desc(dev, "PCI-EISA bridge");
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return(-10000);
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}
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return(ENXIO);
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}
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static int
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eisab_attach(device_t dev)
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{
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/*
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* Attach an EISA bus. Note that we can only have one EISA bus.
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*/
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if (!devclass_get_device(devclass_find("eisa"), 0))
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device_add_child(dev, "eisa", -1);
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/*
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* Attach an ISA bus as well, since the EISA bus may have ISA
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* cards installed, and we may have no EISA support in the system.
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*/
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if (!devclass_get_device(devclass_find("isa"), 0))
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device_add_child(dev, "isa", -1);
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bus_generic_attach(dev);
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return(0);
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}
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