1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 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/cdefs.h> 34 __FBSDID("$FreeBSD$"); 35 36 #include <sys/param.h> 37 #include <sys/bus.h> 38 #include <sys/condvar.h> 39 #include <sys/conf.h> 40 #include <sys/kernel.h> 41 #include <sys/lock.h> 42 #include <sys/malloc.h> 43 #include <sys/module.h> 44 #include <sys/mutex.h> 45 #include <sys/rman.h> 46 #include <sys/stat.h> 47 #include <sys/systm.h> 48 #include <sys/uio.h> 49 50 #include <machine/bus.h> 51 #include <machine/resource.h> 52 53 #include <vm/vm.h> 54 55 #include <dev/altera/avgen/altera_avgen.h> 56 57 static int 58 altera_avgen_nexus_probe(device_t dev) 59 { 60 61 device_set_desc(dev, "Generic Altera Avalon device attachment"); 62 return (BUS_PROBE_NOWILDCARD); 63 } 64 65 static int 66 altera_avgen_nexus_attach(device_t dev) 67 { 68 struct altera_avgen_softc *sc; 69 const char *str_fileio, *str_geomio, *str_mmapio; 70 const char *str_devname; 71 int devunit, error; 72 73 sc = device_get_softc(dev); 74 sc->avg_dev = dev; 75 sc->avg_unit = device_get_unit(dev); 76 77 /* 78 * Query non-standard hints to find out what operations are permitted 79 * on the device, and whether it is cached. 80 */ 81 str_fileio = NULL; 82 str_geomio = NULL; 83 str_mmapio = NULL; 84 str_devname = NULL; 85 devunit = -1; 86 sc->avg_width = 1; 87 error = resource_int_value(device_get_name(dev), device_get_unit(dev), 88 ALTERA_AVALON_STR_WIDTH, &sc->avg_width); 89 if (error != 0 && error != ENOENT) { 90 device_printf(dev, "invalid %s\n", ALTERA_AVALON_STR_WIDTH); 91 return (error); 92 } 93 (void)resource_string_value(device_get_name(dev), 94 device_get_unit(dev), ALTERA_AVALON_STR_FILEIO, &str_fileio); 95 (void)resource_string_value(device_get_name(dev), 96 device_get_unit(dev), ALTERA_AVALON_STR_GEOMIO, &str_geomio); 97 (void)resource_string_value(device_get_name(dev), 98 device_get_unit(dev), ALTERA_AVALON_STR_MMAPIO, &str_mmapio); 99 (void)resource_string_value(device_get_name(dev), 100 device_get_unit(dev), ALTERA_AVALON_STR_DEVNAME, &str_devname); 101 (void)resource_int_value(device_get_name(dev), device_get_unit(dev), 102 ALTERA_AVALON_STR_DEVUNIT, &devunit); 103 104 /* Memory allocation and checking. */ 105 sc->avg_rid = 0; 106 sc->avg_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, 107 &sc->avg_rid, RF_ACTIVE); 108 if (sc->avg_res == NULL) { 109 device_printf(dev, "couldn't map memory\n"); 110 return (ENXIO); 111 } 112 error = altera_avgen_attach(sc, str_fileio, str_geomio, str_mmapio, 113 str_devname, devunit); 114 if (error != 0) 115 bus_release_resource(dev, SYS_RES_MEMORY, sc->avg_rid, 116 sc->avg_res); 117 return (error); 118 } 119 120 static int 121 altera_avgen_nexus_detach(device_t dev) 122 { 123 struct altera_avgen_softc *sc; 124 125 sc = device_get_softc(dev); 126 altera_avgen_detach(sc); 127 bus_release_resource(dev, SYS_RES_MEMORY, sc->avg_rid, sc->avg_res); 128 return (0); 129 } 130 131 static device_method_t altera_avgen_nexus_methods[] = { 132 DEVMETHOD(device_probe, altera_avgen_nexus_probe), 133 DEVMETHOD(device_attach, altera_avgen_nexus_attach), 134 DEVMETHOD(device_detach, altera_avgen_nexus_detach), 135 { 0, 0 } 136 }; 137 138 static driver_t altera_avgen_nexus_driver = { 139 "altera_avgen", 140 altera_avgen_nexus_methods, 141 sizeof(struct altera_avgen_softc), 142 }; 143 144 DRIVER_MODULE(avgen, nexus, altera_avgen_nexus_driver, 0, 0); 145