Support for Freescale QUad Integrated Communications Controller.

The QUICC engine is found on various Freescale parts including MPC85xx, and
provides multiple generic time-division serial channel resources, which are in
turn muxed/demuxed by the Serial Communications Controller (SCC).

Along with core QUICC/SCC functionality a uart(4)-compliant device driver is
provided which allows for serial ports over QUICC/SCC.

Approved by:	cognet (mentor)
Obtained from:	Juniper
MFp4:		e500

1 files changed, 95 insertions, 0 deletions

diff --git a/sys/dev/scc/scc_bfe_quicc.c b/sys/dev/scc/scc_bfe_quicc.c
new file mode 100644
index 0000000..4dc7024
--- /dev/null
+++ b/sys/dev/scc/scc_bfe_quicc.c
@@ -0,0 +1,95 @@
+/*-
+ * Copyright (c) 2006 Marcel Moolenaar
+ * 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 ``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 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("$FreeBSD$");
+
+#define	__RMAN_RESOURCE_VISIBLE
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/bus.h>
+#include <sys/conf.h>
+#include <sys/kernel.h>
+#include <sys/module.h>
+
+#include <dev/quicc/quicc_bus.h>
+
+#include <machine/bus.h>
+#include <sys/rman.h>
+#include <machine/resource.h>
+
+#include <dev/scc/scc_bfe.h>
+
+static int
+scc_quicc_probe(device_t dev)
+{
+	device_t parent;
+	struct scc_softc *sc;
+	uintptr_t devtype, rclk;
+	int error;
+
+	parent = device_get_parent(dev);
+
+	error = BUS_READ_IVAR(parent, dev, QUICC_IVAR_DEVTYPE, &devtype);
+	if (error)
+		return (error);
+	if (devtype != QUICC_DEVTYPE_SCC)
+		return (ENXIO);
+
+	device_set_desc(dev, "QUICC quad channel SCC");
+
+	sc = device_get_softc(dev);
+	sc->sc_class = &scc_quicc_class;
+	if (BUS_READ_IVAR(parent, dev, QUICC_IVAR_BRGCLK, &rclk))
+		rclk = 0;
+	return (scc_bfe_probe(dev, 0, rclk, 0));
+}
+
+static device_method_t scc_quicc_methods[] = {
+	/* Device interface */
+	DEVMETHOD(device_probe,		scc_quicc_probe),
+	DEVMETHOD(device_attach,	scc_bfe_attach),
+	DEVMETHOD(device_detach,	scc_bfe_detach),
+
+	DEVMETHOD(bus_alloc_resource,	scc_bus_alloc_resource),
+	DEVMETHOD(bus_release_resource,	scc_bus_release_resource),
+	DEVMETHOD(bus_get_resource,	scc_bus_get_resource),
+	DEVMETHOD(bus_read_ivar,	scc_bus_read_ivar),
+	DEVMETHOD(bus_setup_intr,	scc_bus_setup_intr),
+	DEVMETHOD(bus_teardown_intr,	scc_bus_teardown_intr),
+	DEVMETHOD(bus_print_child,	bus_generic_print_child),
+	DEVMETHOD(bus_driver_added,	bus_generic_driver_added),
+	{ 0, 0 }
+};
+
+static driver_t scc_quicc_driver = {
+	scc_driver_name,
+	scc_quicc_methods,
+	sizeof(struct scc_softc),
+};
+
+DRIVER_MODULE(scc, quicc, scc_quicc_driver, scc_devclass, 0, 0);