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/altera/avgen/altera_avgen.h>
58 altera_avgen_nexus_probe(device_t dev)
61 device_set_desc(dev, "Generic Altera Avalon device attachment");
62 return (BUS_PROBE_NOWILDCARD);
66 altera_avgen_nexus_attach(device_t dev)
68 struct altera_avgen_softc *sc;
69 const char *str_fileio, *str_geomio, *str_mmapio;
70 const char *str_devname;
73 sc = device_get_softc(dev);
75 sc->avg_unit = device_get_unit(dev);
78 * Query non-standard hints to find out what operations are permitted
79 * on the device, and whether it is cached.
87 error = resource_int_value(device_get_name(dev), device_get_unit(dev),
88 ALTERA_AVALON_STR_WIDTH, &sc->avg_width);
89 if (error != 0 && error != ENOENT) {
90 device_printf(dev, "invalid %s\n", ALTERA_AVALON_STR_WIDTH);
93 (void)resource_string_value(device_get_name(dev),
94 device_get_unit(dev), ALTERA_AVALON_STR_FILEIO, &str_fileio);
95 (void)resource_string_value(device_get_name(dev),
96 device_get_unit(dev), ALTERA_AVALON_STR_GEOMIO, &str_geomio);
97 (void)resource_string_value(device_get_name(dev),
98 device_get_unit(dev), ALTERA_AVALON_STR_MMAPIO, &str_mmapio);
99 (void)resource_string_value(device_get_name(dev),
100 device_get_unit(dev), ALTERA_AVALON_STR_DEVNAME, &str_devname);
101 (void)resource_int_value(device_get_name(dev), device_get_unit(dev),
102 ALTERA_AVALON_STR_DEVUNIT, &devunit);
104 /* Memory allocation and checking. */
106 sc->avg_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
107 &sc->avg_rid, RF_ACTIVE);
108 if (sc->avg_res == NULL) {
109 device_printf(dev, "couldn't map memory\n");
112 error = altera_avgen_attach(sc, str_fileio, str_geomio, str_mmapio,
113 str_devname, devunit);
115 bus_release_resource(dev, SYS_RES_MEMORY, sc->avg_rid,
121 altera_avgen_nexus_detach(device_t dev)
123 struct altera_avgen_softc *sc;
125 sc = device_get_softc(dev);
126 altera_avgen_detach(sc);
127 bus_release_resource(dev, SYS_RES_MEMORY, sc->avg_rid, sc->avg_res);
131 static device_method_t altera_avgen_nexus_methods[] = {
132 DEVMETHOD(device_probe, altera_avgen_nexus_probe),
133 DEVMETHOD(device_attach, altera_avgen_nexus_attach),
134 DEVMETHOD(device_detach, altera_avgen_nexus_detach),
138 static driver_t altera_avgen_nexus_driver = {
140 altera_avgen_nexus_methods,
141 sizeof(struct altera_avgen_softc),
144 DRIVER_MODULE(avgen, nexus, altera_avgen_nexus_driver, altera_avgen_devclass,