diff options
Diffstat (limited to 'sys/dev/dpaa/fman_fdt.c')
-rw-r--r-- | sys/dev/dpaa/fman_fdt.c | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/sys/dev/dpaa/fman_fdt.c b/sys/dev/dpaa/fman_fdt.c new file mode 100644 index 0000000..89c9eca --- /dev/null +++ b/sys/dev/dpaa/fman_fdt.c @@ -0,0 +1,104 @@ +/*- + * Copyright (c) 2012 Semihalf. + * 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/kernel.h> +#include <sys/bus.h> +#include <sys/module.h> + +#include <dev/ofw/ofw_bus.h> +#include <dev/ofw/ofw_bus_subr.h> + +#include <contrib/ncsw/inc/ncsw_ext.h> +#include <contrib/ncsw/inc/enet_ext.h> + +#include "fman.h" + +#define FFMAN_DEVSTR "Freescale Frame Manager" + +static int fman_fdt_probe(device_t dev); + +static device_method_t fman_methods[] = { + /* Device interface */ + DEVMETHOD(device_probe, fman_fdt_probe), + DEVMETHOD(device_attach, fman_attach), + DEVMETHOD(device_detach, fman_detach), + + DEVMETHOD(device_shutdown, fman_shutdown), + DEVMETHOD(device_suspend, fman_suspend), + DEVMETHOD(device_resume, fman_resume), + + { 0, 0 } +}; + +static driver_t fman_driver = { + "fman", + fman_methods, + sizeof(struct fman_softc), +}; + +static devclass_t fman_devclass; +EARLY_DRIVER_MODULE(fman, simplebus, fman_driver, fman_devclass, 0, 0, + BUS_PASS_BUS + BUS_PASS_ORDER_MIDDLE); + + +static int +fman_fdt_probe(device_t dev) +{ + + if (!ofw_bus_is_compatible(dev, "fsl,fman")) + return (ENXIO); + + device_set_desc(dev, FFMAN_DEVSTR); + + return (BUS_PROBE_DEFAULT); +} + +uint32_t +fman_get_clock(struct fman_softc *sc) +{ + device_t dev; + phandle_t node; + pcell_t fman_clock; + + dev = sc->dev; + node = ofw_bus_get_node(dev); + + if ((OF_getprop(node, "clock-frequency", &fman_clock, + sizeof(fman_clock)) <= 0) || (fman_clock == 0)) { + device_printf(dev, "could not acquire correct frequency " + "from DTS\n"); + + return (0); + } + + return ((uint32_t)fman_clock); +} + |