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