add35ed5b8
to check the status property in their probe routines. Simplebus used to only instantiate its children whose status="okay" but that was improper behavior, fixed in r261352. Now that it doesn't check anymore and probes all its children; the children all have to do the check because really only the children know how to properly interpret their status property strings. Right now all existing drivers only understand "okay" versus something- that's-not-okay, so they all use the new ofw_bus_status_okay() helper.
127 lines
3.4 KiB
C
127 lines
3.4 KiB
C
/*-
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* Copyright (c) 2013 Ruslan Bukin <br@bsdpad.com>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* Vybrid Family Miscellaneous System Control Module (MSCM)
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* Chapter 66, Vybrid Reference Manual, Rev. 5, 07/2013
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/bus.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/malloc.h>
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#include <sys/rman.h>
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#include <sys/timeet.h>
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#include <sys/timetc.h>
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#include <sys/watchdog.h>
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#include <dev/fdt/fdt_common.h>
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#include <dev/ofw/openfirm.h>
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#include <dev/ofw/ofw_bus.h>
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#include <dev/ofw/ofw_bus_subr.h>
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#include <machine/bus.h>
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#include <machine/fdt.h>
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#include <machine/cpu.h>
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#include <machine/intr.h>
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#include <arm/freescale/vybrid/vf_common.h>
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#define VF_NINT 112 /* Total number of interrupts */
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/* Int Router Shared Peripheral Routing Control */
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#define MSCM_IRSPRC(n) (0x880 + 2 * n)
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struct mscm_softc {
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struct resource *res[1];
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bus_space_tag_t bst;
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bus_space_handle_t bsh;
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};
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static struct resource_spec mscm_spec[] = {
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{ SYS_RES_MEMORY, 0, RF_ACTIVE },
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{ -1, 0 }
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};
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static int
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mscm_probe(device_t dev)
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{
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if (!ofw_bus_status_okay(dev))
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return (ENXIO);
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if (!ofw_bus_is_compatible(dev, "fsl,mvf600-mscm"))
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return (ENXIO);
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device_set_desc(dev, "Vybrid Family Miscellaneous System Control Module");
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return (BUS_PROBE_DEFAULT);
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}
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static int
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mscm_attach(device_t dev)
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{
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struct mscm_softc *sc;
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int i;
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sc = device_get_softc(dev);
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if (bus_alloc_resources(dev, mscm_spec, sc->res)) {
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device_printf(dev, "could not allocate resources\n");
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return (ENXIO);
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}
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/* Memory interface */
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sc->bst = rman_get_bustag(sc->res[0]);
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sc->bsh = rman_get_bushandle(sc->res[0]);
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/* Route all the interrupts to CP0 */
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for (i = 0; i < VF_NINT; i++)
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WRITE2(sc, MSCM_IRSPRC(i), 1);
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return (0);
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}
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static device_method_t mscm_methods[] = {
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DEVMETHOD(device_probe, mscm_probe),
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DEVMETHOD(device_attach, mscm_attach),
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{ 0, 0 }
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};
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static driver_t mscm_driver = {
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"mscm",
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mscm_methods,
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sizeof(struct mscm_softc),
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};
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static devclass_t mscm_devclass;
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DRIVER_MODULE(mscm, simplebus, mscm_driver, mscm_devclass, 0, 0);
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