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
57static int
58altera_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
65static int
66altera_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
120static int
121altera_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
131static 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
138static driver_t altera_avgen_nexus_driver = {
139	"altera_avgen",
140	altera_avgen_nexus_methods,
141	sizeof(struct altera_avgen_softc),
142};
143
144DRIVER_MODULE(avgen, nexus, altera_avgen_nexus_driver, altera_avgen_devclass,
145    0, 0);
146