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author | raj <raj@FreeBSD.org> | 2008-03-03 18:20:17 +0000 |
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committer | raj <raj@FreeBSD.org> | 2008-03-03 18:20:17 +0000 |
commit | ddcbd7a1c933343caf6997ea48416ce7af082d83 (patch) | |
tree | 4bfcfaef6ba2a3d7ebf036eb0d0325e2431535cc /sys/dev/scc/scc_bfe_quicc.c | |
parent | 0757a4afb5d18c5b874cc918eb56d7264456bd20 (diff) | |
download | FreeBSD-src-ddcbd7a1c933343caf6997ea48416ce7af082d83.zip FreeBSD-src-ddcbd7a1c933343caf6997ea48416ce7af082d83.tar.gz |
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
Diffstat (limited to 'sys/dev/scc/scc_bfe_quicc.c')
-rw-r--r-- | sys/dev/scc/scc_bfe_quicc.c | 95 |
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); |