New driver for front panel LEDs on the V215/245.

1 files changed, 161 insertions, 0 deletions

diff --git a/sys/arch/sparc64/dev/led.c b/sys/arch/sparc64/dev/led.c
new file mode 100644
index 00000000000..759f718ddad
--- /dev/null
+++ b/sys/arch/sparc64/dev/led.c
@@ -0,0 +1,161 @@
+/*	$OpenBSD: led.c,v 1.1 2007/05/29 04:08:02 kettenis Exp $	*/
+
+/*
+ * Copyright (c) 2007 Mark Kettenis
+ *
+ * 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.
+ */
+
+/*
+ * Driver for leds on Fire V215/V245.
+ */
+
+#include <sys/param.h>
+#include <sys/kernel.h>
+#include <sys/device.h>
+#include <sys/malloc.h>
+#include <sys/systm.h>
+#include <sys/timeout.h>
+
+#include <machine/autoconf.h>
+#include <machine/bus.h>
+#include <machine/cpu.h>
+
+#include <sparc64/dev/ebusreg.h>
+#include <sparc64/dev/ebusvar.h>
+
+/*
+ * Register access is indirect, through an address and data port.
+ */
+
+#define	EPIC_DATA			0x40
+#define	EPIC_ADDR			0x41
+#define	EPIC_WRITE_MASK			0x80
+
+#define	EPIC_FW_VERSION			0x05
+#define	EPIC_LED_STATE0			0x06
+
+#define	EPIC_ALERT_LED_MASK		0x0C
+#define	EPIC_ALERT_LED_OFF		0x00
+#define	EPIC_ALERT_LED_ON		0x04
+
+#define	EPIC_POWER_LED_MASK		0x30
+#define	EPIC_POWER_LED_OFF		0x00
+#define	EPIC_POWER_LED_ON		0x10
+#define	EPIC_POWER_LED_SB_BLINK		0x20
+#define EPIC_POWER_LED_FAST_BLINK	0x30
+
+struct led_softc {
+	struct device		sc_dv;
+	bus_space_tag_t		sc_iot;
+	bus_space_handle_t	sc_ioh;
+
+	struct timeout		sc_to;
+	int			sc_on;
+	struct blink_led	sc_blink;
+};
+
+int	led_match(struct device *, void *, void *);
+void	led_attach(struct device *, struct device *, void *);
+
+struct cfattach led_ca = {
+	sizeof(struct led_softc), led_match, led_attach
+};
+
+struct cfdriver led_cd = {
+	NULL, "led", DV_DULL
+};
+
+void led_blink(void *, int);
+void led_blink_finish(void *);
+
+int
+led_match(struct device *parent, void *cf, void *aux)
+{
+	struct ebus_attach_args *ea = aux;
+	char *str;
+
+	if (strcmp("env-monitor", ea->ea_name) != 0)
+		return (0);
+
+	str = getpropstring(ea->ea_node, "compatible");
+	if (strcmp(str, "epic") == 0)
+		return (1);
+
+	return (0);
+}
+
+void
+led_attach(struct device *parent, struct device *self, void *aux)
+{
+	struct led_softc *sc = (void *)self;
+	struct ebus_attach_args *ea = aux;
+	int rev;
+
+	if (ebus_bus_map(ea->ea_iotag, 0,
+	    EBUS_PADDR_FROM_REG(&ea->ea_regs[0]),
+	    ea->ea_regs[0].size, 0, 0, &sc->sc_ioh) == 0) {
+		sc->sc_iot = ea->ea_iotag;
+	} else if (ebus_bus_map(ea->ea_memtag, 0,
+	    EBUS_PADDR_FROM_REG(&ea->ea_regs[0]),
+	    ea->ea_regs[0].size, 0, 0, &sc->sc_ioh) == 0) {
+		sc->sc_iot = ea->ea_memtag;
+	} else {
+		printf("%s: can't map register space\n", self->dv_xname);
+		return;
+	}
+
+	bus_space_write_1(sc->sc_iot, sc->sc_ioh, EPIC_ADDR, EPIC_FW_VERSION);
+	delay(10000);
+	rev = bus_space_read_1(sc->sc_iot, sc->sc_ioh, EPIC_DATA);
+	printf(": rev 0x%02x\n", rev);
+
+	/* Turn off the alert LED. */
+	bus_space_write_1(sc->sc_iot, sc->sc_ioh,
+	    EPIC_WRITE_MASK, EPIC_ALERT_LED_MASK);
+	bus_space_write_1(sc->sc_iot, sc->sc_ioh,
+	    EPIC_ADDR, EPIC_LED_STATE0);
+	delay(10000);
+	bus_space_write_1(sc->sc_iot, sc->sc_ioh,
+	    EPIC_DATA, EPIC_ALERT_LED_OFF);
+
+	timeout_set(&sc->sc_to, led_blink_finish, sc);
+
+	sc->sc_blink.bl_func = led_blink;
+	sc->sc_blink.bl_arg = sc;
+	blink_led_register(&sc->sc_blink);
+}
+
+void
+led_blink(void *v, int on)
+{
+	struct led_softc *sc = v;
+
+	sc->sc_on = on;
+	bus_space_write_1(sc->sc_iot, sc->sc_ioh, EPIC_ADDR, EPIC_LED_STATE0);
+	timeout_add(&sc->sc_to, max(1, hz / 100));
+}
+
+void
+led_blink_finish(void *v)
+{
+	struct led_softc *sc = v;
+	u_int8_t reg;
+
+	if (sc->sc_on)
+		reg = EPIC_ALERT_LED_ON;
+	else
+		reg = EPIC_ALERT_LED_OFF;
+
+	bus_space_write_1(sc->sc_iot, sc->sc_ioh, EPIC_DATA, reg);
+}