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Diffstat (limited to 'sys/arm/freescale/vybrid/vf_mscm.c')
| -rw-r--r-- | sys/arm/freescale/vybrid/vf_mscm.c | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/sys/arm/freescale/vybrid/vf_mscm.c b/sys/arm/freescale/vybrid/vf_mscm.c new file mode 100644 index 000000000000..aa29175468af --- /dev/null +++ b/sys/arm/freescale/vybrid/vf_mscm.c @@ -0,0 +1,126 @@ +/*- + * SPDX-License-Identifier: BSD-2-Clause-FreeBSD + * + * Copyright (c) 2013 Ruslan Bukin <br@bsdpad.com> + * 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. + */ + +/* + * Vybrid Family Miscellaneous System Control Module (MSCM) + * Chapter 66, Vybrid Reference Manual, Rev. 5, 07/2013 + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/bus.h> +#include <sys/kernel.h> +#include <sys/module.h> +#include <sys/malloc.h> +#include <sys/rman.h> +#include <sys/timeet.h> +#include <sys/timetc.h> +#include <sys/watchdog.h> + +#include <dev/ofw/openfirm.h> +#include <dev/ofw/ofw_bus.h> +#include <dev/ofw/ofw_bus_subr.h> + +#include <machine/bus.h> +#include <machine/cpu.h> +#include <machine/intr.h> + +#include <arm/freescale/vybrid/vf_common.h> + +#define VF_NINT 112 /* Total number of interrupts */ + +/* Int Router Shared Peripheral Routing Control */ +#define MSCM_IRSPRC(n) (0x880 + 2 * n) + +struct mscm_softc { + struct resource *res[1]; + bus_space_tag_t bst; + bus_space_handle_t bsh; +}; + +static struct resource_spec mscm_spec[] = { + { SYS_RES_MEMORY, 0, RF_ACTIVE }, + { -1, 0 } +}; + +static int +mscm_probe(device_t dev) +{ + + if (!ofw_bus_status_okay(dev)) + return (ENXIO); + + if (!ofw_bus_is_compatible(dev, "fsl,mvf600-mscm")) + return (ENXIO); + + device_set_desc(dev, "Vybrid Family Miscellaneous System Control Module"); + return (BUS_PROBE_DEFAULT); +} + +static int +mscm_attach(device_t dev) +{ + struct mscm_softc *sc; + int i; + + sc = device_get_softc(dev); + + if (bus_alloc_resources(dev, mscm_spec, sc->res)) { + device_printf(dev, "could not allocate resources\n"); + return (ENXIO); + } + + /* Memory interface */ + sc->bst = rman_get_bustag(sc->res[0]); + sc->bsh = rman_get_bushandle(sc->res[0]); + + /* Route all the interrupts to CP0 */ + for (i = 0; i < VF_NINT; i++) + WRITE2(sc, MSCM_IRSPRC(i), 1); + + return (0); +} + +static device_method_t mscm_methods[] = { + DEVMETHOD(device_probe, mscm_probe), + DEVMETHOD(device_attach, mscm_attach), + { 0, 0 } +}; + +static driver_t mscm_driver = { + "mscm", + mscm_methods, + sizeof(struct mscm_softc), +}; + +static devclass_t mscm_devclass; + +DRIVER_MODULE(mscm, simplebus, mscm_driver, mscm_devclass, 0, 0); |