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