[src/trunk]: src/sys/dev/acpi Add driver for ACPI Generic Event Device

[jmcneill <jmcneill%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/19630fc4f9a7
branches:  trunk
changeset: 445325:19630fc4f9a7
user:      jmcneill <jmcneill%NetBSD.org@localhost>
date:      Mon Oct 22 22:36:19 2018 +0000

description:
Add driver for ACPI Generic Event Device

diffstat:

 sys/dev/acpi/acpi_ged.c |  102 ++++++++++++++++++++++++++++++++++++++++++++++++
 sys/dev/acpi/files.acpi |    7 ++-
 2 files changed, 108 insertions(+), 1 deletions(-)

diffs (127 lines):

diff -r 83853d970dd4 -r 19630fc4f9a7 sys/dev/acpi/acpi_ged.c
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/dev/acpi/acpi_ged.c   Mon Oct 22 22:36:19 2018 +0000
@@ -0,0 +1,102 @@
+/* $NetBSD: acpi_ged.c,v 1.1 2018/10/22 22:36:19 jmcneill Exp $ */
+
+/*-
+ * Copyright (c) 2018 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Jared McNeill <jmcneill%invisible.ca@localhost>.
+ *
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
+ */
+
+#include <sys/cdefs.h>
+__KERNEL_RCSID(0, "$NetBSD: acpi_ged.c,v 1.1 2018/10/22 22:36:19 jmcneill Exp $");
+
+#include <sys/param.h>
+#include <sys/bus.h>
+#include <sys/cpu.h>
+#include <sys/device.h>
+#include <sys/intr.h>
+#include <sys/kmem.h>
+
+#include <dev/acpi/acpireg.h>
+#include <dev/acpi/acpivar.h>
+#include <dev/acpi/acpi_event.h>
+
+static int     acpi_ged_match(device_t, cfdata_t, void *);
+static void    acpi_ged_attach(device_t, device_t, void *);
+
+static void    acpi_ged_register_event(void *, struct acpi_event *, struct acpi_irq *);
+static int     acpi_ged_intr(void *);
+
+CFATTACH_DECL_NEW(acpiged, 0, acpi_ged_match, acpi_ged_attach, NULL, NULL);
+
+static const char * const compatible[] = {
+       "ACPI0013",
+       NULL
+};
+
+static int
+acpi_ged_match(device_t parent, cfdata_t cf, void *aux)
+{
+       struct acpi_attach_args *aa = aux;
+
+       if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE)
+               return 0;
+
+       return acpi_match_hid(aa->aa_node->ad_devinfo, compatible);
+}
+
+static void
+acpi_ged_attach(device_t parent, device_t self, void *aux)
+{
+       struct acpi_attach_args * const aa = aux;
+       ACPI_HANDLE handle = aa->aa_node->ad_handle;
+
+        if (ACPI_FAILURE(acpi_event_create_int(self, handle, acpi_ged_register_event, self)))
+                aprint_error_dev(self, "failed to create events\n");
+}
+
+static void
+acpi_ged_register_event(void *priv, struct acpi_event *ev, struct acpi_irq *irq)
+{
+       device_t dev = priv;
+       void *ih;
+
+       const int type = (irq->ar_type == ACPI_EDGE_SENSITIVE) ? IST_EDGE : IST_LEVEL;
+       ih = intr_establish(irq->ar_irq, IPL_VM, type, acpi_ged_intr, ev);
+       if (ih == NULL) {
+               aprint_error_dev(dev, "couldn't establish interrupt (irq %d)\n", irq->ar_irq);
+               return;
+       }
+}
+
+static int
+acpi_ged_intr(void *priv)
+{
+       struct acpi_event * const ev = priv;
+
+       acpi_event_notify(ev);
+
+       return 1;
+}
diff -r 83853d970dd4 -r 19630fc4f9a7 sys/dev/acpi/files.acpi
--- a/sys/dev/acpi/files.acpi   Mon Oct 22 22:29:35 2018 +0000
+++ b/sys/dev/acpi/files.acpi   Mon Oct 22 22:36:19 2018 +0000
@@ -1,4 +1,4 @@
-#      $NetBSD: files.acpi,v 1.110 2018/10/22 22:29:35 jmcneill Exp $
+#      $NetBSD: files.acpi,v 1.111 2018/10/22 22:36:19 jmcneill Exp $
 
 include "dev/acpi/acpica/files.acpica"
 
@@ -79,6 +79,11 @@
 attach acpifan at acpinodebus
 file   dev/acpi/acpi_fan.c             acpifan
 
+# ACPI Generic Event Device
+device acpiged
+attach acpiged at acpinodebus
+file   dev/acpi/acpi_ged.c             acpiged
+
 # ACPI Power Meter
 device acpipmtr: sysmon_envsys
 attach acpipmtr at acpinodebus