handle power button (on 712 for now)

1 files changed, 130 insertions, 0 deletions

diff --git a/sys/arch/hppa/dev/power.c b/sys/arch/hppa/dev/power.c
new file mode 100644
index 00000000000..1f8412e0367
--- /dev/null
+++ b/sys/arch/hppa/dev/power.c
@@ -0,0 +1,130 @@
+/*	$OpenBSD: power.c,v 1.1 2003/08/20 20:53:31 mickey Exp $	*/
+
+/*
+ * Copyright (c) 2003 Michael Shalayeff
+ * All rights reserved.
+ *
+ * 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 AUTHOR ``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 AUTHOR OR HIS RELATIVES 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 MIND, 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/param.h>
+#include <sys/kernel.h>
+#include <sys/systm.h>
+#include <sys/reboot.h>
+#include <sys/device.h>
+#include <sys/kthread.h>
+
+#include <machine/reg.h>
+#include <machine/autoconf.h>
+
+#include <hppa/dev/cpudevs.h>
+
+struct power_softc {
+	struct device sc_dev;
+
+	struct proc *sc_thread;
+	void (*sc_kicker)(void *);
+
+	int sc_dr_cnt;
+};
+
+int	powermatch(struct device *, void *, void *);
+void	powerattach(struct device *, struct device *, void *);
+
+struct cfattach power_ca = {
+	sizeof(struct power_softc), powermatch, powerattach
+};
+
+struct cfdriver power_cd = {
+	NULL, "power", DV_DULL
+};
+
+void power_thread_create(void *v);
+void power_thread_dr(void *v);
+
+int
+powermatch(struct device *parent, void *cfdata, void *aux)
+{
+	struct cfdata *cf = cfdata;
+	struct confargs *ca = aux;
+
+	if (cf->cf_unit > 0 && !strcmp(ca->ca_name, "power"))
+		return (0);
+
+	return (1);
+}
+
+void
+powerattach(struct device *parent, struct device *self, void *aux)
+{
+	struct power_softc *sc = (struct power_softc *)self;
+
+	switch (cpu_hvers) {
+	case HPPA_BOARD_HP712_60:
+	case HPPA_BOARD_HP712_80:
+	case HPPA_BOARD_HP712_100:
+	case HPPA_BOARD_HP712_120:
+		sc->sc_kicker = power_thread_dr;
+		break;
+	default:
+		break;
+	}
+
+	printf("\n");
+
+	if (sc->sc_kicker)
+		kthread_create_deferred(power_thread_create, sc);
+}
+
+void
+power_thread_create(void *v)
+{
+	struct power_softc *sc = v;
+
+	if (kthread_create(sc->sc_kicker, sc, &sc->sc_thread,
+	    "powerbutton", 0))
+		printf("WARNING: failed to create kernel power thread\n");
+}
+
+void
+power_thread_dr(void *v)
+{
+	struct power_softc *sc = v;
+	u_int32_t r;
+
+	for (;;) {
+		mfcpu(DR0_PCXL_SHINT_EN, r);	/* XXX don't ask */
+		if (r & 0x80000000)
+			sc->sc_dr_cnt = 0;
+		else
+			sc->sc_dr_cnt++;
+
+		/*
+		 * the bit is undampened straight wire from the power
+		 * switch and thus we have do dampen it ourselves.
+		 */
+		if (sc->sc_dr_cnt == hz / 10)
+			boot(RB_POWERDOWN | RB_HALT);
+
+		tsleep(v, PWAIT, "drpower", 10);
+	}
+}