Add glue driver for Amlogic Meson Gigabit Ethernet Controller

and enable it for Odroid C1 board.
Together with r291676 change, dwc(4) can receive packets now.

sys/arm/amlogic/aml8726/aml8726_if_dwc.c

@@ -0,0 +1,98 @@
+/*-
+ * Copyright (c) 2015 Ganbold Tsagaankhuu <ganbold@FreeBSD.org>
+ * 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/kernel.h>
+#include <sys/module.h>
+
+#include <machine/bus.h>
+
+#include <dev/dwc/if_dwc.h>
+#include <dev/dwc/if_dwcvar.h>
+#include <dev/ofw/ofw_bus.h>
+#include <dev/ofw/ofw_bus_subr.h>
+
+#include "if_dwc_if.h"
+
+static int
+aml8726_if_dwc_probe(device_t dev)
+{
+
+	if (!ofw_bus_status_okay(dev))
+		return (ENXIO);
+	if (!ofw_bus_is_compatible(dev, "amlogic,meson6-dwmac"))
+		return (ENXIO);
+	device_set_desc(dev, "Amlogic Meson Gigabit Ethernet Controller");
+
+	return (BUS_PROBE_DEFAULT);
+}
+
+static int
+aml8726_if_dwc_init(device_t dev)
+{
+
+	return (0);
+}
+
+static int
+aml8726_if_dwc_mac_type(device_t dev)
+{
+
+	return (DWC_GMAC_ALT_DESC);
+}
+
+static int
+aml8726_if_dwc_mii_clk(device_t dev)
+{
+
+	return (GMAC_MII_CLK_100_150M_DIV62);
+}
+
+static device_method_t aml8726_dwc_methods[] = {
+	DEVMETHOD(device_probe,		aml8726_if_dwc_probe),
+
+	DEVMETHOD(if_dwc_init,		aml8726_if_dwc_init),
+	DEVMETHOD(if_dwc_mac_type,	aml8726_if_dwc_mac_type),
+	DEVMETHOD(if_dwc_mii_clk,	aml8726_if_dwc_mii_clk),
+
+	DEVMETHOD_END
+};
+
+static devclass_t aml8726_dwc_devclass;
+
+extern driver_t dwc_driver;
+
+DEFINE_CLASS_1(dwc, aml8726_dwc_driver, aml8726_dwc_methods,
+    sizeof(struct dwc_softc), dwc_driver);
+DRIVER_MODULE(aml8726_dwc, simplebus, aml8726_dwc_driver,
+    aml8726_dwc_devclass, 0, 0);
+
+MODULE_DEPEND(aml8726_dwc, dwc, 1, 1, 1);

sys/arm/amlogic/aml8726/files.aml8726

@@ -28,3 +28,4 @@ arm/amlogic/aml8726/aml8726_pinctrl.c		optional	fdt_pinctrl
 arm/amlogic/aml8726/uart_dev_aml8726.c		optional	uart
 arm/amlogic/aml8726/aml8726_usb_phy-m3.c	optional	dwcotg usb gpio
 arm/amlogic/aml8726/aml8726_usb_phy-m6.c	optional	dwcotg usb gpio
+arm/amlogic/aml8726/aml8726_if_dwc.c		optional	dwc

sys/boot/fdt/dts/arm/odroidc1.dts

@@ -323,7 +323,7 @@
 
 		eth@c9410000 {
 			/* ethernet */
-			compatible = "snps,dwmac";
+			compatible = "amlogic,meson6-dwmac";
 			reg = <0xc9410000 0x2000>;	/* ahbbus 0x410000 */
 			interrupts = <0 8 1>;
 			#address-cells = <1>;