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128 lines
3.9 KiB
C
128 lines
3.9 KiB
C
/*-
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* Copyright (c) 2003 John Baldwin <jhb@FreeBSD.org>
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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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*
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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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/*
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* ISA Bridge driver for Generic ISA Bus Devices. See section 10.7 of the
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* ACPI 2.0a specification for details on this device.
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*/
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#include "opt_acpi.h"
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#include <sys/param.h>
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#include <sys/bus.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/module.h>
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#include <contrib/dev/acpica/include/acpi.h>
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#include <contrib/dev/acpica/include/accommon.h>
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#include <dev/acpica/acpivar.h>
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#include <isa/isavar.h>
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/* Hooks for the ACPI CA debugging infrastructure. */
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#define _COMPONENT ACPI_BUS
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ACPI_MODULE_NAME("ISA_ACPI")
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struct acpi_isab_softc {
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device_t ap_dev;
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ACPI_HANDLE ap_handle;
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};
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static int acpi_isab_probe(device_t bus);
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static int acpi_isab_attach(device_t bus);
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static int acpi_isab_read_ivar(device_t dev, device_t child, int which,
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uintptr_t *result);
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static device_method_t acpi_isab_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, acpi_isab_probe),
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DEVMETHOD(device_attach, acpi_isab_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_read_ivar, acpi_isab_read_ivar),
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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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DEVMETHOD_END
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};
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static driver_t acpi_isab_driver = {
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"isab",
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acpi_isab_methods,
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sizeof(struct acpi_isab_softc),
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};
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DRIVER_MODULE(acpi_isab, acpi, acpi_isab_driver, 0, 0);
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MODULE_DEPEND(acpi_isab, acpi, 1, 1, 1);
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static int
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acpi_isab_probe(device_t dev)
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{
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static char *isa_ids[] = { "PNP0A05", "PNP0A06", NULL };
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int rv;
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if (acpi_disabled("isab") || device_get_unit(dev) != 0)
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return (ENXIO);
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rv = ACPI_ID_PROBE(device_get_parent(dev), dev, isa_ids, NULL);
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if (rv <= 0)
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device_set_desc(dev, "ACPI Generic ISA bridge");
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return (rv);
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}
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static int
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acpi_isab_attach(device_t dev)
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{
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struct acpi_isab_softc *sc;
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ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
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sc = device_get_softc(dev);
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sc->ap_dev = dev;
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sc->ap_handle = acpi_get_handle(dev);
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return (isab_attach(dev));
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}
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static int
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acpi_isab_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
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{
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struct acpi_isab_softc *sc = device_get_softc(dev);
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switch (which) {
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case ACPI_IVAR_HANDLE:
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*result = (uintptr_t)sc->ap_handle;
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return (0);
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}
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return (ENOENT);
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}
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