2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2012-2013, 2016 Robert N. M. Watson
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.
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
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.
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
33 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD$");
36 #include <sys/param.h>
38 #include <sys/condvar.h>
40 #include <sys/kernel.h>
42 #include <sys/malloc.h>
43 #include <sys/module.h>
44 #include <sys/mutex.h>
47 #include <sys/systm.h>
50 #include <machine/bus.h>
51 #include <machine/resource.h>
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>
60 #include <dev/altera/avgen/altera_avgen.h>
63 altera_avgen_fdt_probe(device_t dev)
66 if (!ofw_bus_status_okay(dev))
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);
77 altera_avgen_fdt_attach(device_t dev)
79 struct altera_avgen_softc *sc;
80 char *str_fileio, *str_geomio, *str_mmapio;
86 sc = device_get_softc(dev);
88 sc->avg_unit = device_get_unit(dev);
91 * Query driver-specific OpenFirmware properties to determine how to
92 * expose the device via /dev.
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)
114 /* Memory allocation and checking. */
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");
122 error = altera_avgen_attach(sc, str_fileio, str_geomio, str_mmapio,
123 str_devname, devunit);
125 bus_release_resource(dev, SYS_RES_MEMORY, sc->avg_rid,
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);
139 altera_avgen_fdt_detach(device_t dev)
141 struct altera_avgen_softc *sc;
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);
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),
156 static driver_t altera_avgen_fdt_driver = {
158 altera_avgen_fdt_methods,
159 sizeof(struct altera_avgen_softc),
162 DRIVER_MODULE(avgen, simplebus, altera_avgen_fdt_driver,
163 altera_avgen_devclass, 0, 0);