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/fdt/fdt_common.h> 55 #include <dev/ofw/openfirm.h> 56 #include <dev/ofw/ofw_bus.h> 57 #include <dev/ofw/ofw_bus_subr.h> 58 59 #include <dev/altera/avgen/altera_avgen.h> 60 61 static int 62 altera_avgen_fdt_probe(device_t dev) 63 { 64 65 if (!ofw_bus_status_okay(dev)) 66 return (ENXIO); 67 68 if (ofw_bus_is_compatible(dev, "sri-cambridge,avgen")) { 69 device_set_desc(dev, "Generic Altera Avalon device attachment"); 70 return (BUS_PROBE_DEFAULT); 71 } 72 return (ENXIO); 73 } 74 75 static int 76 altera_avgen_fdt_attach(device_t dev) 77 { 78 struct altera_avgen_softc *sc; 79 char *str_fileio, *str_mmapio; 80 char *str_devname; 81 phandle_t node; 82 pcell_t cell; 83 int devunit, error; 84 85 sc = device_get_softc(dev); 86 sc->avg_dev = dev; 87 sc->avg_unit = device_get_unit(dev); 88 89 /* 90 * Query driver-specific OpenFirmware properties to determine how to 91 * expose the device via /dev. 92 */ 93 str_fileio = NULL; 94 str_mmapio = NULL; 95 str_devname = NULL; 96 devunit = -1; 97 sc->avg_width = 1; 98 node = ofw_bus_get_node(dev); 99 if (OF_getprop(node, "sri-cambridge,width", &cell, sizeof(cell)) > 0) 100 sc->avg_width = cell; 101 (void)OF_getprop_alloc(node, "sri-cambridge,fileio", sizeof(char), 102 (void **)&str_fileio); 103 (void)OF_getprop_alloc(node, "sri-cambridge,mmapio", sizeof(char), 104 (void **)&str_mmapio); 105 (void)OF_getprop_alloc(node, "sri-cambridge,devname", sizeof(char), 106 (void **)&str_devname); 107 if (OF_getprop(node, "sri-cambridge,devunit", &cell, sizeof(cell)) > 0) 108 devunit = cell; 109 110 /* Memory allocation and checking. */ 111 sc->avg_rid = 0; 112 sc->avg_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, 113 &sc->avg_rid, RF_ACTIVE); 114 if (sc->avg_res == NULL) { 115 device_printf(dev, "couldn't map memory\n"); 116 return (ENXIO); 117 } 118 error = altera_avgen_attach(sc, str_fileio, str_mmapio, str_devname, 119 devunit); 120 if (error != 0) 121 bus_release_resource(dev, SYS_RES_MEMORY, sc->avg_rid, 122 sc->avg_res); 123 if (str_fileio != NULL) 124 free(str_fileio, M_OFWPROP); 125 if (str_mmapio != NULL) 126 free(str_mmapio, M_OFWPROP); 127 if (str_devname != NULL) 128 free(str_devname, M_OFWPROP); 129 return (error); 130 } 131 132 static int 133 altera_avgen_fdt_detach(device_t dev) 134 { 135 struct altera_avgen_softc *sc; 136 137 sc = device_get_softc(dev); 138 altera_avgen_detach(sc); 139 bus_release_resource(dev, SYS_RES_MEMORY, sc->avg_rid, sc->avg_res); 140 return (0); 141 } 142 143 static device_method_t altera_avgen_fdt_methods[] = { 144 DEVMETHOD(device_probe, altera_avgen_fdt_probe), 145 DEVMETHOD(device_attach, altera_avgen_fdt_attach), 146 DEVMETHOD(device_detach, altera_avgen_fdt_detach), 147 { 0, 0 } 148 }; 149 150 static driver_t altera_avgen_fdt_driver = { 151 "altera_avgen", 152 altera_avgen_fdt_methods, 153 sizeof(struct altera_avgen_softc), 154 }; 155 156 DRIVER_MODULE(avgen, simplebus, altera_avgen_fdt_driver, 157 altera_avgen_devclass, 0, 0); 158