103 lines
3.3 KiB
C
103 lines
3.3 KiB
C
/* $NetBSD: acpi_ged.c,v 1.1 2018/10/22 22:36:19 jmcneill Exp $ */
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/*-
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* Copyright (c) 2018 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jared McNeill <jmcneill@invisible.ca>.
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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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: acpi_ged.c,v 1.1 2018/10/22 22:36:19 jmcneill Exp $");
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#include <sys/param.h>
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#include <sys/bus.h>
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#include <sys/cpu.h>
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#include <sys/device.h>
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#include <sys/intr.h>
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#include <sys/kmem.h>
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#include <dev/acpi/acpireg.h>
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#include <dev/acpi/acpivar.h>
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#include <dev/acpi/acpi_event.h>
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static int acpi_ged_match(device_t, cfdata_t, void *);
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static void acpi_ged_attach(device_t, device_t, void *);
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static void acpi_ged_register_event(void *, struct acpi_event *, struct acpi_irq *);
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static int acpi_ged_intr(void *);
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CFATTACH_DECL_NEW(acpiged, 0, acpi_ged_match, acpi_ged_attach, NULL, NULL);
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static const char * const compatible[] = {
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"ACPI0013",
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NULL
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};
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static int
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acpi_ged_match(device_t parent, cfdata_t cf, void *aux)
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{
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struct acpi_attach_args *aa = aux;
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if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE)
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return 0;
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return acpi_match_hid(aa->aa_node->ad_devinfo, compatible);
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}
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static void
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acpi_ged_attach(device_t parent, device_t self, void *aux)
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{
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struct acpi_attach_args * const aa = aux;
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ACPI_HANDLE handle = aa->aa_node->ad_handle;
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if (ACPI_FAILURE(acpi_event_create_int(self, handle, acpi_ged_register_event, self)))
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aprint_error_dev(self, "failed to create events\n");
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}
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static void
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acpi_ged_register_event(void *priv, struct acpi_event *ev, struct acpi_irq *irq)
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{
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device_t dev = priv;
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void *ih;
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const int type = (irq->ar_type == ACPI_EDGE_SENSITIVE) ? IST_EDGE : IST_LEVEL;
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ih = intr_establish(irq->ar_irq, IPL_VM, type, acpi_ged_intr, ev);
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if (ih == NULL) {
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aprint_error_dev(dev, "couldn't establish interrupt (irq %d)\n", irq->ar_irq);
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return;
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}
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}
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static int
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acpi_ged_intr(void *priv)
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{
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struct acpi_event * const ev = priv;
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acpi_event_notify(ev);
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return 1;
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}
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