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terasic_de4led.c
(4.93 KB)
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terasic_de4led.h
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terasic_de4led_fdt.c
(3.72 KB)
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terasic_de4led_nexus.c
(3.49 KB)
Editing: terasic_de4led_fdt.c
/*- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD * * Copyright (c) 2012 Robert N. M. Watson * All rights reserved. * * This software was developed by SRI International and the University of * Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237) * ("CTSRD"), as part of the DARPA CRASH research programme. * * 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/bus.h> #include <sys/condvar.h> #include <sys/conf.h> #include <sys/bio.h> #include <sys/kernel.h> #include <sys/lock.h> #include <sys/malloc.h> #include <sys/module.h> #include <sys/mutex.h> #include <sys/rman.h> #include <sys/systm.h> #include <machine/bus.h> #include <machine/resource.h> #include <dev/fdt/fdt_common.h> #include <dev/ofw/openfirm.h> #include <dev/ofw/ofw_bus.h> #include <dev/ofw/ofw_bus_subr.h> #include <dev/terasic/de4led/terasic_de4led.h> /* * Nexus bus attachment for the 8-element LED on the Terasic DE-4 FPGA board, * which is hooked up to the processor via a memory-mapped Avalon bus. */ static int terasic_de4led_fdt_probe(device_t dev) { if (!ofw_bus_status_okay(dev)) return (ENXIO); if (ofw_bus_is_compatible(dev, "sri-cambridge,de4led")) { device_set_desc(dev, "Terasic DE4 8-element LED"); return (BUS_PROBE_DEFAULT); } return (ENXIO); } static int terasic_de4led_fdt_attach(device_t dev) { struct terasic_de4led_softc *sc; sc = device_get_softc(dev); sc->tdl_dev = dev; sc->tdl_unit = device_get_unit(dev); sc->tdl_rid = 0; sc->tdl_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->tdl_rid, RF_ACTIVE); if (sc->tdl_res == NULL) { device_printf(dev, "couldn't map memory\n"); return (ENXIO); } terasic_de4led_attach(sc); return (0); } static int terasic_de4led_fdt_detach(device_t dev) { struct terasic_de4led_softc *sc; sc = device_get_softc(dev); KASSERT(sc->tdl_res != NULL, ("%s: resources not allocated", __func__)); terasic_de4led_detach(sc); bus_release_resource(dev, SYS_RES_MEMORY, sc->tdl_rid, sc->tdl_res); return (0); } static device_method_t terasic_de4led_fdt_methods[] = { DEVMETHOD(device_probe, terasic_de4led_fdt_probe), DEVMETHOD(device_attach, terasic_de4led_fdt_attach), DEVMETHOD(device_detach, terasic_de4led_fdt_detach), { 0, 0 } }; static driver_t terasic_de4led_fdt_driver = { "terasic_de4led", terasic_de4led_fdt_methods, sizeof(struct terasic_de4led_softc), }; DRIVER_MODULE(terasic_de4led, simplebus, terasic_de4led_fdt_driver, terasic_de4led_devclass, 0, 0);
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