1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2012-2013, 2016 Robert N. M. Watson 5 * All rights reserved. 6 * 7 * This software was developed by SRI International and the University of 8 * Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237) 9 * ("CTSRD"), as part of the DARPA CRASH research programme. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 #include <sys/param.h> 34 #include <sys/bus.h> 35 #include <sys/condvar.h> 36 #include <sys/conf.h> 37 #include <sys/kernel.h> 38 #include <sys/lock.h> 39 #include <sys/malloc.h> 40 #include <sys/module.h> 41 #include <sys/mutex.h> 42 #include <sys/rman.h> 43 #include <sys/stat.h> 44 #include <sys/systm.h> 45 #include <sys/uio.h> 46 47 #include <machine/bus.h> 48 #include <machine/resource.h> 49 50 #include <vm/vm.h> 51 52 #include <dev/altera/avgen/altera_avgen.h> 53 54 static int 55 altera_avgen_nexus_probe(device_t dev) 56 { 57 58 device_set_desc(dev, "Generic Altera Avalon device attachment"); 59 return (BUS_PROBE_NOWILDCARD); 60 } 61 62 static int 63 altera_avgen_nexus_attach(device_t dev) 64 { 65 struct altera_avgen_softc *sc; 66 const char *str_fileio, *str_geomio, *str_mmapio; 67 const char *str_devname; 68 int devunit, error; 69 70 sc = device_get_softc(dev); 71 sc->avg_dev = dev; 72 sc->avg_unit = device_get_unit(dev); 73 74 /* 75 * Query non-standard hints to find out what operations are permitted 76 * on the device, and whether it is cached. 77 */ 78 str_fileio = NULL; 79 str_geomio = NULL; 80 str_mmapio = NULL; 81 str_devname = NULL; 82 devunit = -1; 83 sc->avg_width = 1; 84 error = resource_int_value(device_get_name(dev), device_get_unit(dev), 85 ALTERA_AVALON_STR_WIDTH, &sc->avg_width); 86 if (error != 0 && error != ENOENT) { 87 device_printf(dev, "invalid %s\n", ALTERA_AVALON_STR_WIDTH); 88 return (error); 89 } 90 (void)resource_string_value(device_get_name(dev), 91 device_get_unit(dev), ALTERA_AVALON_STR_FILEIO, &str_fileio); 92 (void)resource_string_value(device_get_name(dev), 93 device_get_unit(dev), ALTERA_AVALON_STR_GEOMIO, &str_geomio); 94 (void)resource_string_value(device_get_name(dev), 95 device_get_unit(dev), ALTERA_AVALON_STR_MMAPIO, &str_mmapio); 96 (void)resource_string_value(device_get_name(dev), 97 device_get_unit(dev), ALTERA_AVALON_STR_DEVNAME, &str_devname); 98 (void)resource_int_value(device_get_name(dev), device_get_unit(dev), 99 ALTERA_AVALON_STR_DEVUNIT, &devunit); 100 101 /* Memory allocation and checking. */ 102 sc->avg_rid = 0; 103 sc->avg_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, 104 &sc->avg_rid, RF_ACTIVE); 105 if (sc->avg_res == NULL) { 106 device_printf(dev, "couldn't map memory\n"); 107 return (ENXIO); 108 } 109 error = altera_avgen_attach(sc, str_fileio, str_geomio, str_mmapio, 110 str_devname, devunit); 111 if (error != 0) 112 bus_release_resource(dev, SYS_RES_MEMORY, sc->avg_rid, 113 sc->avg_res); 114 return (error); 115 } 116 117 static int 118 altera_avgen_nexus_detach(device_t dev) 119 { 120 struct altera_avgen_softc *sc; 121 122 sc = device_get_softc(dev); 123 altera_avgen_detach(sc); 124 bus_release_resource(dev, SYS_RES_MEMORY, sc->avg_rid, sc->avg_res); 125 return (0); 126 } 127 128 static device_method_t altera_avgen_nexus_methods[] = { 129 DEVMETHOD(device_probe, altera_avgen_nexus_probe), 130 DEVMETHOD(device_attach, altera_avgen_nexus_attach), 131 DEVMETHOD(device_detach, altera_avgen_nexus_detach), 132 { 0, 0 } 133 }; 134 135 static driver_t altera_avgen_nexus_driver = { 136 "altera_avgen", 137 altera_avgen_nexus_methods, 138 sizeof(struct altera_avgen_softc), 139 }; 140 141 DRIVER_MODULE(avgen, nexus, altera_avgen_nexus_driver, 0, 0); 142