1 /*- 2 * Copyright (c) 2018-2020 Ruslan Bukin <br@bsdpad.com> 3 * All rights reserved. 4 * 5 * This software was developed by BAE Systems, the University of Cambridge 6 * Computer Laboratory, and Memorial University under DARPA/AFRL contract 7 * FA8650-15-C-7558 ("CADETS"), as part of the DARPA Transparent Computing 8 * (TC) research program. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #include <sys/param.h> 34 #include <sys/systm.h> 35 #include <sys/bus.h> 36 #include <sys/rman.h> 37 #include <sys/kernel.h> 38 #include <sys/module.h> 39 #include <machine/bus.h> 40 41 #include <dev/ofw/ofw_bus.h> 42 #include <dev/ofw/ofw_bus_subr.h> 43 44 #include <arm64/coresight/coresight.h> 45 #include <arm64/coresight/coresight_funnel.h> 46 47 #include "coresight_if.h" 48 49 static struct ofw_compat_data compat_data[] = { 50 { "arm,coresight-funnel", HWTYPE_FUNNEL }, 51 { "arm,coresight-static-funnel", HWTYPE_STATIC_FUNNEL }, 52 { NULL, HWTYPE_NONE } 53 }; 54 55 static int 56 funnel_fdt_probe(device_t dev) 57 { 58 struct funnel_softc *sc; 59 60 if (!ofw_bus_status_okay(dev)) 61 return (ENXIO); 62 63 sc = device_get_softc(dev); 64 65 sc->hwtype = ofw_bus_search_compatible(dev, compat_data)->ocd_data; 66 switch (sc->hwtype) { 67 case HWTYPE_FUNNEL: 68 device_set_desc(dev, "Coresight Funnel"); 69 break; 70 case HWTYPE_STATIC_FUNNEL: 71 device_set_desc(dev, "Coresight Static Funnel"); 72 break; 73 default: 74 return (ENXIO); 75 }; 76 77 return (BUS_PROBE_DEFAULT); 78 } 79 80 static int 81 funnel_fdt_attach(device_t dev) 82 { 83 struct funnel_softc *sc; 84 85 sc = device_get_softc(dev); 86 sc->pdata = coresight_fdt_get_platform_data(dev); 87 88 return (funnel_attach(dev)); 89 } 90 91 static device_method_t funnel_fdt_methods[] = { 92 /* Device interface */ 93 DEVMETHOD(device_probe, funnel_fdt_probe), 94 DEVMETHOD(device_attach, funnel_fdt_attach), 95 DEVMETHOD_END 96 }; 97 98 DEFINE_CLASS_1(funnel, funnel_fdt_driver, funnel_fdt_methods, 99 sizeof(struct funnel_softc), funnel_driver); 100 101 EARLY_DRIVER_MODULE(funnel, simplebus, funnel_fdt_driver, 0, 0, 102 BUS_PASS_INTERRUPT + BUS_PASS_ORDER_MIDDLE); 103