1 files changed, 257 insertions, 0 deletions

diff --git a/sys/dev/etherswitch/etherswitch.c b/sys/dev/etherswitch/etherswitch.c
new file mode 100644
index 0000000000000..a2162899f9fc5
--- /dev/null
+++ b/sys/dev/etherswitch/etherswitch.c
@@ -0,0 +1,257 @@
+/*-
+ * 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/conf.h>
+#include <sys/fcntl.h>
+#include <sys/lock.h>
+#include <sys/kernel.h>
+#include <sys/malloc.h>
+#include <sys/module.h>
+#include <sys/socket.h>
+#include <sys/sx.h>
+#include <sys/systm.h>
+#include <sys/uio.h>
+
+#include <net/if.h>
+
+#include <dev/etherswitch/etherswitch.h>
+
+#include "etherswitch_if.h"
+
+#define BUFSIZE 1024
+
+struct etherswitch_softc {
+	device_t sc_dev;
+	int sc_count;
+
+	struct cdev *sc_devnode;
+	struct sx sc_lock;
+};
+
+#define	SWITCH_LOCK(sc)			sx_xlock(&(sc)->sc_lock)
+#define	SWITCH_UNLOCK(sc)			sx_xunlock(&(sc)->sc_lock)
+
+static int etherswitch_probe(device_t);
+static int etherswitch_attach(device_t);
+static int etherswitch_detach(device_t);
+static void etherswitch_identify(driver_t *driver, device_t parent);
+
+devclass_t etherswitch_devclass;
+
+static device_method_t etherswitch_methods[] = {
+	/* device interface */
+	DEVMETHOD(device_identify,	etherswitch_identify),
+	DEVMETHOD(device_probe,		etherswitch_probe),
+	DEVMETHOD(device_attach,	etherswitch_attach),
+	DEVMETHOD(device_detach,	etherswitch_detach),
+
+	{ 0, 0 }
+};
+
+driver_t etherswitch_driver = {
+	"etherswitch",
+	etherswitch_methods,
+	sizeof(struct etherswitch_softc),
+};
+
+static	d_open_t	etherswitchopen;
+static	d_close_t	etherswitchclose;
+static	d_write_t	etherswitchwrite;
+static	d_read_t	etherswitchread;
+static	d_ioctl_t	etherswitchioctl;
+
+static struct cdevsw etherswitch_cdevsw = {
+	.d_version =	D_VERSION,
+	.d_flags =	D_TRACKCLOSE,
+	.d_open =	etherswitchopen,
+	.d_close =	etherswitchclose,
+	.d_read =	etherswitchread,
+	.d_write =	etherswitchwrite,
+	.d_ioctl =	etherswitchioctl,
+	.d_name =	"etherswitch",
+};
+
+static void
+etherswitch_identify(driver_t *driver, device_t parent)
+{
+	if (device_find_child(parent, "etherswitch", -1) == NULL)
+		BUS_ADD_CHILD(parent, 0, "etherswitch", -1);
+}
+
+static int
+etherswitch_probe(device_t dev)
+{
+	device_set_desc(dev, "Switch controller");
+
+	return (0);
+}
+	
+static int
+etherswitch_attach(device_t dev)
+{
+	struct etherswitch_softc *sc = (struct etherswitch_softc *)device_get_softc(dev);
+
+	sc->sc_dev = dev;
+	sx_init(&sc->sc_lock, "etherswitch");
+	sc->sc_devnode = make_dev(&etherswitch_cdevsw, device_get_unit(dev),
+			UID_ROOT, GID_WHEEL,
+			0600, "etherswitch%d", device_get_unit(dev));
+	if (sc->sc_devnode == NULL) {
+		device_printf(dev, "failed to create character device\n");
+		sx_destroy(&sc->sc_lock);
+		return (ENXIO);
+	}
+	sc->sc_devnode->si_drv1 = sc;
+
+	return (0);
+}
+
+static int
+etherswitch_detach(device_t dev)
+{
+	struct etherswitch_softc *sc = (struct etherswitch_softc *)device_get_softc(dev);
+
+	if (sc->sc_devnode)
+		destroy_dev(sc->sc_devnode);
+	sx_destroy(&sc->sc_lock);
+
+	return (0);
+}
+
+static int
+etherswitchopen(struct cdev *dev, int flags, int fmt, struct thread *td)
+{
+	struct etherswitch_softc *sc = dev->si_drv1;
+
+	SWITCH_LOCK(sc);
+	if (sc->sc_count > 0) {
+		SWITCH_UNLOCK(sc);
+		return (EBUSY);
+	}
+
+	sc->sc_count++;
+	SWITCH_UNLOCK(sc);
+
+	return (0);
+}
+
+static int
+etherswitchclose(struct cdev *dev, int flags, int fmt, struct thread *td)
+{
+	struct etherswitch_softc *sc = dev->si_drv1;
+
+	SWITCH_LOCK(sc);
+	if (sc->sc_count == 0) {
+		SWITCH_UNLOCK(sc);
+		return (EINVAL);
+	}
+
+	sc->sc_count--;
+
+	if (sc->sc_count < 0)
+		panic("%s: etherswitch_count < 0!", __func__);
+	SWITCH_UNLOCK(sc);
+
+	return (0);
+}
+
+static int
+etherswitchwrite(struct cdev *dev, struct uio * uio, int ioflag)
+{
+	return (EINVAL);
+}
+
+static int
+etherswitchread(struct cdev *dev, struct uio * uio, int ioflag)
+{
+	return (EINVAL);
+}
+
+static int
+etherswitchioctl(struct cdev *cdev, u_long cmd, caddr_t data, int flags, struct thread *td)
+{
+	struct etherswitch_softc *sc = cdev->si_drv1;
+	device_t dev = sc->sc_dev;
+	device_t etherswitch = device_get_parent(dev);
+	etherswitch_info_t *info;
+	etherswitch_reg_t *reg;
+	etherswitch_phyreg_t *phyreg;
+	int error = 0;
+
+	switch (cmd) {
+	case IOETHERSWITCHGETINFO:
+		info = ETHERSWITCH_GETINFO(etherswitch);
+		bcopy(info, data, sizeof(etherswitch_info_t));
+		break;
+		
+	case IOETHERSWITCHGETREG:
+		reg = (etherswitch_reg_t *)data;
+		reg->val = ETHERSWITCH_READREG(etherswitch, reg->reg);
+		break;
+	
+	case IOETHERSWITCHSETREG:
+		reg = (etherswitch_reg_t *)data;
+		error = ETHERSWITCH_WRITEREG(etherswitch, reg->reg, reg->val);
+		break;
+
+	case IOETHERSWITCHGETPORT:
+		error = ETHERSWITCH_GETPORT(etherswitch, (etherswitch_port_t *)data);
+		break;
+
+	case IOETHERSWITCHSETPORT:
+		error = ETHERSWITCH_SETPORT(etherswitch, (etherswitch_port_t *)data);
+		break;
+
+	case IOETHERSWITCHGETVLANGROUP:
+		error = ETHERSWITCH_GETVGROUP(etherswitch, (etherswitch_vlangroup_t *)data);
+		break;
+
+	case IOETHERSWITCHSETVLANGROUP:
+		error = ETHERSWITCH_SETVGROUP(etherswitch, (etherswitch_vlangroup_t *)data);
+		break;
+
+	case IOETHERSWITCHGETPHYREG:
+		phyreg = (etherswitch_phyreg_t *)data;
+		phyreg->val = ETHERSWITCH_READPHYREG(etherswitch, phyreg->phy, phyreg->reg);
+		break;
+	
+	case IOETHERSWITCHSETPHYREG:
+		phyreg = (etherswitch_phyreg_t *)data;
+		error = ETHERSWITCH_WRITEPHYREG(etherswitch, phyreg->phy, phyreg->reg, phyreg->val);
+		break;
+
+	default:
+		error = ENOTTY;
+	}
+
+	return (error);
+}
+
+MODULE_VERSION(etherswitch, 1);