266 lines
6.8 KiB
C
266 lines
6.8 KiB
C
/*-
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* Copyright (c) 2022 Takanori Watanabe
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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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#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 <sys/rman.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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/* Hooks for the ACPI CA debugging infrastructure */
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#define _COMPONENT ACPI_BUS
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ACPI_MODULE_NAME("GED")
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static MALLOC_DEFINE(M_ACPIGED, "acpiged", "ACPI Generic event data");
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struct acpi_ged_event {
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device_t dev;
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struct resource *r;
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int rid;
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void *cookie;
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ACPI_HANDLE ah;
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ACPI_OBJECT_LIST args;
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ACPI_OBJECT arg1;
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};
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struct acpi_ged_softc {
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int numevts;
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struct acpi_ged_event *evts;
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};
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static int acpi_ged_probe(device_t dev);
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static int acpi_ged_attach(device_t dev);
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static int acpi_ged_detach(device_t dev);
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static char *ged_ids[] = { "ACPI0013", NULL };
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static device_method_t acpi_ged_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, acpi_ged_probe),
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DEVMETHOD(device_attach, acpi_ged_attach),
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DEVMETHOD(device_detach, acpi_ged_detach),
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DEVMETHOD_END
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};
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static driver_t acpi_ged_driver = {
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"acpi_ged",
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acpi_ged_methods,
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sizeof(struct acpi_ged_softc),
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};
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DRIVER_MODULE(acpi_ged, acpi, acpi_ged_driver, 0, 0);
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MODULE_DEPEND(acpi_ged, acpi, 1, 1, 1);
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static void
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acpi_ged_evt(void *arg)
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{
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struct acpi_ged_event *evt = arg;
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AcpiEvaluateObject(evt->ah, NULL, &evt->args, NULL);
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}
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static void
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acpi_ged_intr(void *arg)
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{
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AcpiOsExecute(OSL_GPE_HANDLER, acpi_ged_evt, arg);
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}
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static int
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acpi_ged_probe(device_t dev)
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{
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int rv;
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if (acpi_disabled("ged"))
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return (ENXIO);
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rv = ACPI_ID_PROBE(device_get_parent(dev), dev, ged_ids, NULL);
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if (rv > 0)
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return (ENXIO);
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device_set_desc(dev, "Generic Event Device");
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return (rv);
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}
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/*this should be in acpi_resource.*/
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static int
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acpi_get_trigger(ACPI_RESOURCE *res)
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{
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int trig;
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switch (res->Type) {
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case ACPI_RESOURCE_TYPE_IRQ:
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KASSERT(res->Data.Irq.InterruptCount == 1,
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("%s: multiple interrupts", __func__));
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trig = res->Data.Irq.Triggering;
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break;
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case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
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KASSERT(res->Data.ExtendedIrq.InterruptCount == 1,
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("%s: multiple interrupts", __func__));
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trig = res->Data.ExtendedIrq.Triggering;
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break;
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default:
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panic("%s: bad resource type %u", __func__, res->Type);
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}
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return (trig == ACPI_EDGE_SENSITIVE)
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? INTR_TRIGGER_EDGE : INTR_TRIGGER_LEVEL;
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}
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static int
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acpi_ged_attach(device_t dev)
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{
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struct acpi_ged_softc *sc = device_get_softc(dev);
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struct resource_list *rl;
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struct resource_list_entry *rle;
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ACPI_RESOURCE ares;
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ACPI_HANDLE evt_method;
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int i;
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int rawirq, trig;
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char name[] = "_Xnn";
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ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__);
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if (ACPI_FAILURE(AcpiGetHandle(acpi_get_handle(dev), "_EVT",
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&evt_method))) {
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device_printf(dev, "_EVT not found\n");
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evt_method = NULL;
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}
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rl = BUS_GET_RESOURCE_LIST(device_get_parent(dev), dev);
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STAILQ_FOREACH(rle, rl, link) {
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if (rle->type == SYS_RES_IRQ) {
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sc->numevts++;
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}
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}
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sc->evts = mallocarray(sc->numevts, sizeof(*sc->evts), M_ACPIGED,
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M_WAITOK | M_ZERO);
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for (i = 0; i < sc->numevts; i++) {
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sc->evts[i].dev = dev;
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sc->evts[i].rid = i;
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sc->evts[i].r = bus_alloc_resource_any(dev, SYS_RES_IRQ,
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&sc->evts[i].rid, RF_ACTIVE | RF_SHAREABLE);
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if (sc->evts[i].r == NULL) {
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device_printf(dev, "Cannot alloc %dth irq\n", i);
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continue;
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}
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#ifdef INTRNG
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{
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struct intr_map_data_acpi *ima;
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ima = rman_get_virtual(sc->evts[i].r);
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if (ima == NULL) {
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device_printf(dev, "map not found"
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" non-intrng?\n");
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rawirq = rman_get_start(sc->evts[i].r);
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trig = INTR_TRIGGER_LEVEL;
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if (ACPI_SUCCESS(acpi_lookup_irq_resource
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(dev, sc->evts[i].rid,
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sc->evts[i].r, &ares))) {
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trig = acpi_get_trigger(&ares);
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}
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} else if (ima->hdr.type == INTR_MAP_DATA_ACPI) {
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device_printf(dev, "Raw IRQ %d\n", ima->irq);
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rawirq = ima->irq;
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trig = ima->trig;
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} else {
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device_printf(dev, "Not supported intr"
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" type%d\n", ima->hdr.type);
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continue;
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}
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}
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#else
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rawirq = rman_get_start(sc->evts[i].r);
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trig = INTR_TRIGGER_LEVEL;
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if (ACPI_SUCCESS(acpi_lookup_irq_resource
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(dev, sc->evts[i].rid,
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sc->evts[i].r, &ares))) {
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trig = acpi_get_trigger(&ares);
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}
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#endif
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if (rawirq < 0x100) {
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sprintf(name, "_%c%02X",
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((trig == INTR_TRIGGER_EDGE) ? 'E' : 'L'),
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rawirq);
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if (ACPI_SUCCESS(AcpiGetHandle
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(acpi_get_handle(dev),
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name, &sc->evts[i].ah))) {
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sc->evts[i].args.Count = 0; /* ensure */
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} else {
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sc->evts[i].ah = NULL; /* ensure */
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}
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}
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if (sc->evts[i].ah == NULL) {
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if (evt_method != NULL) {
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sc->evts[i].ah = evt_method;
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sc->evts[i].arg1.Type = ACPI_TYPE_INTEGER;
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sc->evts[i].arg1.Integer.Value = rawirq;
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sc->evts[i].args.Count = 1;
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sc->evts[i].args.Pointer = &sc->evts[i].arg1;
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} else{
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device_printf
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(dev,
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"Cannot find handler method %d\n",
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i);
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continue;
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}
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}
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if (bus_setup_intr(dev, sc->evts[i].r,
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INTR_TYPE_MISC | INTR_MPSAFE, NULL, acpi_ged_intr,
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&sc->evts[i], &sc->evts[i].cookie) != 0) {
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device_printf(dev, "Failed to setup intr %d\n", i);
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}
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}
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return_VALUE(0);
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}
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static int
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acpi_ged_detach(device_t dev)
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{
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struct acpi_ged_softc *sc = device_get_softc(dev);
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int i;
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for (i = 0; i < sc->numevts; i++) {
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if (sc->evts[i].cookie) {
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bus_teardown_intr(dev, sc->evts[i].r,
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sc->evts[i].cookie);
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}
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if (sc->evts[i].r) {
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bus_release_resource(dev, SYS_RES_IRQ, sc->evts[i].rid,
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sc->evts[i].r);
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}
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}
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free(sc->evts, M_ACPIGED);
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return (0);
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}
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