111 lines
3.4 KiB
C
111 lines
3.4 KiB
C
/*-
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* Copyright (c) 2012 Robert N. M. Watson
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* All rights reserved.
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*
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* This software was developed by SRI International and the University of
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* Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237)
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* ("CTSRD"), as part of the DARPA CRASH research programme.
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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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/bus.h>
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#include <sys/condvar.h>
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#include <sys/conf.h>
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#include <sys/bio.h>
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#include <sys/kernel.h>
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#include <sys/lock.h>
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#include <sys/malloc.h>
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#include <sys/module.h>
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#include <sys/mutex.h>
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#include <sys/rman.h>
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#include <sys/systm.h>
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#include <machine/bus.h>
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#include <machine/resource.h>
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#include <dev/terasic/de4led/terasic_de4led.h>
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/*
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* Nexus bus attachment for the 8-element LED on the Terasic DE-4 FPGA board,
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* which is hooked up to the processor via a memory-mapped Avalon bus.
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*/
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static int
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terasic_de4led_nexus_probe(device_t dev)
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{
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device_set_desc(dev, "Terasic DE4 8-element LED");
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return (BUS_PROBE_NOWILDCARD);
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}
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static int
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terasic_de4led_nexus_attach(device_t dev)
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{
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struct terasic_de4led_softc *sc;
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sc = device_get_softc(dev);
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sc->tdl_dev = dev;
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sc->tdl_unit = device_get_unit(dev);
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sc->tdl_rid = 0;
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sc->tdl_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
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&sc->tdl_rid, RF_ACTIVE);
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if (sc->tdl_res == NULL) {
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device_printf(dev, "couldn't map memory\n");
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return (ENXIO);
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}
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terasic_de4led_attach(sc);
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return (0);
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}
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static int
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terasic_de4led_nexus_detach(device_t dev)
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{
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struct terasic_de4led_softc *sc;
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sc = device_get_softc(dev);
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KASSERT(sc->tdl_res != NULL, ("%s: resources not allocated",
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__func__));
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terasic_de4led_detach(sc);
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bus_release_resource(dev, SYS_RES_MEMORY, sc->tdl_rid, sc->tdl_res);
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return (0);
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}
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static device_method_t terasic_de4led_nexus_methods[] = {
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DEVMETHOD(device_probe, terasic_de4led_nexus_probe),
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DEVMETHOD(device_attach, terasic_de4led_nexus_attach),
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DEVMETHOD(device_detach, terasic_de4led_nexus_detach),
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{ 0, 0 }
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};
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static driver_t terasic_de4led_nexus_driver = {
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"terasic_de4led",
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terasic_de4led_nexus_methods,
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sizeof(struct terasic_de4led_softc),
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};
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DRIVER_MODULE(terasic_de4led, nexus, terasic_de4led_nexus_driver,
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terasic_de4led_devclass, 0, 0);
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