1 files changed, 120 insertions, 0 deletions
diff --git a/sys/dev/mdio/mdio.c b/sys/dev/mdio/mdio.c
new file mode 100644
index 0000000..4258a69
--- /dev/null
+++ b/sys/dev/mdio/mdio.c
@@ -0,0 +1,120 @@
+/*-
+ * Copyright (c) 2011-2012 Stefan Bethke.
+ * 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.
+ *
+ * $FreeBSD$
+ */
+
+#include <sys/param.h>
+#include <sys/bus.h>
+#include <sys/systm.h>
+#include <sys/module.h>
+
+#include <dev/mdio/mdio.h>
+
+#include "mdio_if.h"
+
+static void
+mdio_identify(driver_t *driver, device_t parent)
+{
+
+	if (device_find_child(parent, mdio_driver.name, -1) == NULL)
+		BUS_ADD_CHILD(parent, 0, mdio_driver.name, -1);
+}
+
+static int
+mdio_probe(device_t dev)
+{
+
+	device_set_desc(dev, "MDIO");
+
+	return (BUS_PROBE_SPECIFIC);
+}
+
+static int
+mdio_attach(device_t dev)
+{
+
+	bus_generic_probe(dev);
+	bus_enumerate_hinted_children(dev);
+	return (bus_generic_attach(dev));
+}
+
+static int
+mdio_detach(device_t dev)
+{
+
+	bus_generic_detach(dev);
+	return (0);
+}
+
+static int
+mdio_readreg(device_t dev, int phy, int reg)
+{
+
+	return (MDIO_READREG(device_get_parent(dev), phy, reg));
+}
+
+static int
+mdio_writereg(device_t dev, int phy, int reg, int val)
+{
+
+	return (MDIO_WRITEREG(device_get_parent(dev), phy, reg, val));
+}
+
+static void
+mdio_hinted_child(device_t dev, const char *name, int unit)
+{
+
+	device_add_child(dev, name, unit);
+}
+
+static device_method_t mdio_methods[] = {
+	/* device interface */
+	DEVMETHOD(device_identify,	mdio_identify),
+	DEVMETHOD(device_probe,		mdio_probe),
+	DEVMETHOD(device_attach,	mdio_attach),
+	DEVMETHOD(device_detach,	mdio_detach),
+	DEVMETHOD(device_shutdown,	bus_generic_shutdown),
+
+	/* bus interface */
+	DEVMETHOD(bus_add_child,	device_add_child_ordered),
+	DEVMETHOD(bus_hinted_child,	mdio_hinted_child),
+
+	/* MDIO access */
+	DEVMETHOD(mdio_readreg,		mdio_readreg),
+	DEVMETHOD(mdio_writereg,	mdio_writereg),
+
+	DEVMETHOD_END
+};
+
+driver_t mdio_driver = {
+	"mdio",
+	mdio_methods,
+	0
+};
+
+devclass_t mdio_devclass;
+
+MODULE_VERSION(mdio, 1);