1 files changed, 112 insertions, 0 deletions

diff --git a/sys/dev/terasic/de4led/terasic_de4led_fdt.c b/sys/dev/terasic/de4led/terasic_de4led_fdt.c
new file mode 100644
index 0000000000000..92da5034013f4
--- /dev/null
+++ b/sys/dev/terasic/de4led/terasic_de4led_fdt.c
@@ -0,0 +1,112 @@
+/*-
+ * Copyright (c) 2012 Robert N. M. Watson
+ * All rights reserved.
+ *
+ * This software was developed by SRI International and the University of
+ * Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237)
+ * ("CTSRD"), as part of the DARPA CRASH research programme.
+ *
+ * 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 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 AUTHOR 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>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/bus.h>
+#include <sys/condvar.h>
+#include <sys/conf.h>
+#include <sys/bio.h>
+#include <sys/kernel.h>
+#include <sys/lock.h>
+#include <sys/malloc.h>
+#include <sys/module.h>
+#include <sys/mutex.h>
+#include <sys/rman.h>
+#include <sys/systm.h>
+
+#include <machine/bus.h>
+#include <machine/resource.h>
+
+#include <dev/terasic/de4led/terasic_de4led.h>
+
+/*
+ * Nexus bus attachment for the 8-element LED on the Terasic DE-4 FPGA board,
+ * which is hooked up to the processor via a memory-mapped Avalon bus.
+ */
+static int
+terasic_de4led_nexus_probe(device_t dev)
+{
+
+	device_set_desc(dev, "Terasic DE4 8-element LED");
+	return (BUS_PROBE_DEFAULT);
+}
+
+static int
+terasic_de4led_nexus_attach(device_t dev)
+{
+	struct terasic_de4led_softc *sc;
+
+	sc = device_get_softc(dev);
+	sc->tdl_dev = dev;
+	sc->tdl_unit = device_get_unit(dev);
+	sc->tdl_rid = 0;
+	sc->tdl_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
+	    &sc->tdl_rid, RF_ACTIVE);
+	if (sc->tdl_res == NULL) {
+		device_printf(dev, "couldn't map memory\n");
+		return (ENXIO);
+	}
+	terasic_de4led_attach(sc);
+	return (0);
+}
+
+static int
+terasic_de4led_nexus_detach(device_t dev)
+{
+	struct terasic_de4led_softc *sc;
+
+	sc = device_get_softc(dev);
+	KASSERT(sc->tdl_res != NULL, ("%s: resources not allocated",
+	    __func__));
+	terasic_de4led_detach(sc);
+	bus_release_resource(dev, SYS_RES_MEMORY, sc->tdl_rid, sc->tdl_res);
+	return (0);
+}
+
+static device_method_t terasic_de4led_nexus_methods[] = {
+	DEVMETHOD(device_probe,		terasic_de4led_nexus_probe),
+	DEVMETHOD(device_attach,	terasic_de4led_nexus_attach),
+	DEVMETHOD(device_detach,	terasic_de4led_nexus_detach),
+	{ 0, 0 }
+};
+
+static driver_t terasic_de4led_nexus_driver = {
+	"terasic_de4led",
+	terasic_de4led_nexus_methods,
+	sizeof(struct terasic_de4led_softc),
+};
+
+static devclass_t terasic_de4led_devclass;
+
+DRIVER_MODULE(terasic_de4led, nexus, terasic_de4led_nexus_driver,
+    terasic_de4led_devclass, 0, 0);