Import the initial CPU support for the MIPS RALink RT305x SoC.

This is a MIPS4KC CPU with various embedded peripherals, including
wireless and ethernet support.

This commit includes the platform, UART, ethernet MAC and GPIO support.
The interrupt-driven GPIO code is disabled for now pending GPIO changes
from the submitter.

Submitted by:	Aleksandr Rybalko <ray@dlink.ua>

1 files changed, 141 insertions, 0 deletions

diff --git a/sys/mips/rt305x/rt305x_ic.c b/sys/mips/rt305x/rt305x_ic.c
new file mode 100644
index 0000000..8bddd41
--- /dev/null
+++ b/sys/mips/rt305x/rt305x_ic.c
@@ -0,0 +1,141 @@
+/*-
+ * Copyright (c) 2010 Aleksandr Rybalko.
+ * 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 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/systm.h>
+#include <sys/bus.h>
+#include <sys/interrupt.h>
+#include <sys/kernel.h>
+#include <sys/module.h>
+#include <sys/rman.h>
+#include <sys/malloc.h>
+
+#include <machine/bus.h>
+
+#include <mips/rt305x/rt305xreg.h>
+#include <mips/rt305x/rt305x_icvar.h>
+
+
+static int	rt305x_ic_probe(device_t);
+static int	rt305x_ic_attach(device_t);
+static int	rt305x_ic_detach(device_t);
+
+
+static struct rt305x_ic_softc *rt305x_ic_softc = NULL;
+
+static int
+rt305x_ic_probe(device_t dev)
+{
+	device_set_desc(dev, "RT305X Interrupt Controller driver");
+	return (0);
+}
+
+static int
+rt305x_ic_attach(device_t dev)
+{
+	struct rt305x_ic_softc *sc = device_get_softc(dev);
+	int error = 0;
+
+	KASSERT((device_get_unit(dev) == 0),
+	    ("rt305x_ic: Only one Interrupt Controller module supported"));
+
+	if (rt305x_ic_softc != NULL)
+		return (ENXIO);
+	rt305x_ic_softc = sc;
+
+
+	/* Map control/status registers. */
+	sc->mem_rid = 0;
+	sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
+	    &sc->mem_rid, RF_ACTIVE);
+
+	if (sc->mem_res == NULL) {
+		device_printf(dev, "couldn't map memory\n");
+		error = ENXIO;
+		rt305x_ic_detach(dev);
+		return(error);
+	}
+	return (bus_generic_attach(dev));
+}
+
+static int
+rt305x_ic_detach(device_t dev)
+{
+	struct rt305x_ic_softc *sc = device_get_softc(dev);
+
+	bus_generic_detach(dev);
+
+	if (sc->mem_res)
+		bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid,
+		    sc->mem_res);
+	return(0);
+}
+
+
+uint32_t
+rt305x_ic_get(uint32_t reg)
+{
+	struct rt305x_ic_softc *sc = rt305x_ic_softc;
+
+	if (!sc)
+		return (0);
+
+	return (bus_read_4(sc->mem_res, reg));
+}
+
+void
+rt305x_ic_set(uint32_t reg, uint32_t val)
+{
+	struct rt305x_ic_softc *sc = rt305x_ic_softc;
+
+	if (!sc)
+		return;
+
+	bus_write_4(sc->mem_res, reg, val);
+
+	return;
+}
+
+
+static device_method_t rt305x_ic_methods[] = {
+	DEVMETHOD(device_probe,			rt305x_ic_probe),
+	DEVMETHOD(device_attach,		rt305x_ic_attach),
+	DEVMETHOD(device_detach,		rt305x_ic_detach),
+
+	{0, 0},
+};
+
+static driver_t rt305x_ic_driver = {
+	"rt305x_ic",
+	rt305x_ic_methods,
+	sizeof(struct rt305x_ic_softc),
+};
+static devclass_t rt305x_ic_devclass;
+
+DRIVER_MODULE(rt305x_ic, obio, rt305x_ic_driver, rt305x_ic_devclass, 0, 0);