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/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/fdt/fdt_common.h> 56 #include <dev/ofw/openfirm.h> 57 #include <dev/ofw/ofw_bus.h> 58 #include <dev/ofw/ofw_bus_subr.h> 59 60 #include <dev/altera/avgen/altera_avgen.h> 61 62 static int 63 altera_avgen_fdt_probe(device_t dev) 64 { 65 66 if (!ofw_bus_status_okay(dev)) 67 return (ENXIO); 68 69 if (ofw_bus_is_compatible(dev, "sri-cambridge,avgen")) { 70 device_set_desc(dev, "Generic Altera Avalon device attachment"); 71 return (BUS_PROBE_DEFAULT); 72 } 73 return (ENXIO); 74 } 75 76 static int 77 altera_avgen_fdt_attach(device_t dev) 78 { 79 struct altera_avgen_softc *sc; 80 char *str_fileio, *str_geomio, *str_mmapio; 81 char *str_devname; 82 phandle_t node; 83 pcell_t cell; 84 int devunit, error; 85 86 sc = device_get_softc(dev); 87 sc->avg_dev = dev; 88 sc->avg_unit = device_get_unit(dev); 89 90 /* 91 * Query driver-specific OpenFirmware properties to determine how to 92 * expose the device via /dev. 93 */ 94 str_fileio = NULL; 95 str_geomio = NULL; 96 str_mmapio = NULL; 97 str_devname = NULL; 98 devunit = -1; 99 sc->avg_width = 1; 100 node = ofw_bus_get_node(dev); 101 if (OF_getprop(node, "sri-cambridge,width", &cell, sizeof(cell)) > 0) 102 sc->avg_width = cell; 103 (void)OF_getprop_alloc(node, "sri-cambridge,fileio", 104 (void **)&str_fileio); 105 (void)OF_getprop_alloc(node, "sri-cambridge,geomio", 106 (void **)&str_geomio); 107 (void)OF_getprop_alloc(node, "sri-cambridge,mmapio", 108 (void **)&str_mmapio); 109 (void)OF_getprop_alloc(node, "sri-cambridge,devname", 110 (void **)&str_devname); 111 if (OF_getprop(node, "sri-cambridge,devunit", &cell, sizeof(cell)) > 0) 112 devunit = cell; 113 114 /* Memory allocation and checking. */ 115 sc->avg_rid = 0; 116 sc->avg_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, 117 &sc->avg_rid, RF_ACTIVE); 118 if (sc->avg_res == NULL) { 119 device_printf(dev, "couldn't map memory\n"); 120 return (ENXIO); 121 } 122 error = altera_avgen_attach(sc, str_fileio, str_geomio, str_mmapio, 123 str_devname, devunit); 124 if (error != 0) 125 bus_release_resource(dev, SYS_RES_MEMORY, sc->avg_rid, 126 sc->avg_res); 127 if (str_fileio != NULL) 128 OF_prop_free(str_fileio); 129 if (str_geomio != NULL) 130 OF_prop_free(str_geomio); 131 if (str_mmapio != NULL) 132 OF_prop_free(str_mmapio); 133 if (str_devname != NULL) 134 OF_prop_free(str_devname); 135 return (error); 136 } 137 138 static int 139 altera_avgen_fdt_detach(device_t dev) 140 { 141 struct altera_avgen_softc *sc; 142 143 sc = device_get_softc(dev); 144 altera_avgen_detach(sc); 145 bus_release_resource(dev, SYS_RES_MEMORY, sc->avg_rid, sc->avg_res); 146 return (0); 147 } 148 149 static device_method_t altera_avgen_fdt_methods[] = { 150 DEVMETHOD(device_probe, altera_avgen_fdt_probe), 151 DEVMETHOD(device_attach, altera_avgen_fdt_attach), 152 DEVMETHOD(device_detach, altera_avgen_fdt_detach), 153 { 0, 0 } 154 }; 155 156 static driver_t altera_avgen_fdt_driver = { 157 "altera_avgen", 158 altera_avgen_fdt_methods, 159 sizeof(struct altera_avgen_softc), 160 }; 161 162 DRIVER_MODULE(avgen, simplebus, altera_avgen_fdt_driver, 0, 0); 163