From ef87ec7354a7ae7113394a2113b2577f6b76d24c Mon Sep 17 00:00:00 2001
From: Gordon Willem Klok <gwk@cvs.openbsd.org>
Date: Sun, 22 Apr 2007 20:17:04 +0000
Subject: Add sysbutton a driver for the 'System identifier' button found on
 the fornt panel of the xserve (the button with the triangle on it). This
 driver will dump you into ddb at the press of a button if the ddb.console
 sysctl is set. The bug still has one unresolved issue if ddb.console is not
 set and you press and hold the button you will cause a interrupt storm that
 will slow the system down. So if you keep your xserve near a toddler or you
 yourself are a toddler you might want to consider disabling this device
 remember buttons arn't toys.

ok deraadt.
---
 sys/arch/macppc/dev/sysbutton.c | 91 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 91 insertions(+)
 create mode 100644 sys/arch/macppc/dev/sysbutton.c

(limited to 'sys/arch/macppc/dev')

diff --git a/sys/arch/macppc/dev/sysbutton.c b/sys/arch/macppc/dev/sysbutton.c
new file mode 100644
index 00000000000..a8845a84c5d
--- /dev/null
+++ b/sys/arch/macppc/dev/sysbutton.c
@@ -0,0 +1,91 @@
+/*
+ * Copyright (c) 2007 Gordon Willem Klok <gwk@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/types.h>
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/proc.h>
+#include <sys/device.h>
+
+#include <ddb/db_var.h>
+#include <dev/ofw/openfirm.h>
+
+#include <machine/bus.h>
+#include <machine/autoconf.h>
+
+struct sysbutton_softc {
+	struct device	sc_dev;
+	int		sc_node;
+	int 		sc_intr;
+};
+
+int sysbutton_match(struct device *, void *, void *);
+void sysbutton_attach(struct device *, struct device *, void *);
+int sysbutton_intr(void *);
+
+struct cfattach sysbutton_ca = {
+	sizeof(struct sysbutton_softc), sysbutton_match,
+	sysbutton_attach
+};
+
+struct cfdriver sysbutton_cd = {
+	NULL, "sysbutton", DV_DULL
+};
+
+int
+sysbutton_match(struct device *parent, void *arg, void *aux)
+{
+	struct confargs *ca = aux;
+
+	if (strcmp(ca->ca_name, "indicatorSwitch-gpio") == 0)
+		return 1;
+
+	return 0;
+}
+
+void
+sysbutton_attach(struct device *parent, struct device *self, void *aux)
+{
+	struct sysbutton_softc *sc = (struct sysbutton_softc *)self;
+	struct confargs *ca = aux;
+	int intr[2];
+
+	sc->sc_node = ca->ca_node;
+
+	OF_getprop(sc->sc_node, "interrupts", intr, sizeof(intr));
+	sc->sc_intr = intr[0];
+
+	printf(": irg %d\n", sc->sc_intr);
+
+	mac_intr_establish(parent, sc->sc_intr, IST_LEVEL,
+	    IPL_NONE, sysbutton_intr, sc, sc->sc_dev.dv_xname);
+}
+
+int
+sysbutton_intr(void *v)
+{
+
+	/* 
+	 * XXX: Holding this button causes an interrupt storm if
+	 * ddb.console=0.
+	 */
+#ifdef DDB
+	if (db_console)
+		Debugger();
+#endif
+
+	return 1;
+}
-- 
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