1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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/altera/avgen/altera_avgen.h>
56
57 static int
58 altera_avgen_nexus_probe(device_t dev)
59 {
60
61 device_set_desc(dev, "Generic Altera Avalon device attachment");
62 return (BUS_PROBE_NOWILDCARD);
63 }
64
65 static int
66 altera_avgen_nexus_attach(device_t dev)
67 {
68 struct altera_avgen_softc *sc;
69 const char *str_fileio, *str_geomio, *str_mmapio;
70 const char *str_devname;
71 int devunit, error;
72
73 sc = device_get_softc(dev);
74 sc->avg_dev = dev;
75 sc->avg_unit = device_get_unit(dev);
76
77 /*
78 * Query non-standard hints to find out what operations are permitted
79 * on the device, and whether it is cached.
80 */
81 str_fileio = NULL;
82 str_geomio = NULL;
83 str_mmapio = NULL;
84 str_devname = NULL;
85 devunit = -1;
86 sc->avg_width = 1;
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);
91 return (error);
92 }
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);
103
104 /* Memory allocation and checking. */
105 sc->avg_rid = 0;
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");
110 return (ENXIO);
111 }
112 error = altera_avgen_attach(sc, str_fileio, str_geomio, str_mmapio,
113 str_devname, devunit);
114 if (error != 0)
115 bus_release_resource(dev, SYS_RES_MEMORY, sc->avg_rid,
116 sc->avg_res);
117 return (error);
118 }
119
120 static int
121 altera_avgen_nexus_detach(device_t dev)
122 {
123 struct altera_avgen_softc *sc;
124
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);
128 return (0);
129 }
130
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),
135 { 0, 0 }
136 };
137
138 static driver_t altera_avgen_nexus_driver = {
139 "altera_avgen",
140 altera_avgen_nexus_methods,
141 sizeof(struct altera_avgen_softc),
142 };
143
144 DRIVER_MODULE(avgen, nexus, altera_avgen_nexus_driver, 0, 0);
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