2 * Copyright (c) 2012-2013 Robert N. M. Watson
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.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
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.
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
31 #include <sys/cdefs.h>
32 __FBSDID("$FreeBSD$");
34 #include <sys/param.h>
36 #include <sys/condvar.h>
38 #include <sys/kernel.h>
40 #include <sys/malloc.h>
41 #include <sys/module.h>
42 #include <sys/mutex.h>
45 #include <sys/systm.h>
48 #include <machine/bus.h>
49 #include <machine/resource.h>
53 #include <dev/fdt/fdt_common.h>
54 #include <dev/ofw/openfirm.h>
55 #include <dev/ofw/ofw_bus.h>
56 #include <dev/ofw/ofw_bus_subr.h>
58 #include <dev/altera/avgen/altera_avgen.h>
61 altera_avgen_fdt_probe(device_t dev)
64 if (!ofw_bus_status_okay(dev))
67 if (ofw_bus_is_compatible(dev, "sri-cambridge,avgen")) {
68 device_set_desc(dev, "Generic Altera Avalon device attachment");
69 return (BUS_PROBE_DEFAULT);
75 altera_avgen_fdt_attach(device_t dev)
77 struct altera_avgen_softc *sc;
78 char *str_fileio, *str_mmapio;
84 sc = device_get_softc(dev);
86 sc->avg_unit = device_get_unit(dev);
89 * Query driver-specific OpenFirmware properties to determine how to
90 * expose the device via /dev.
97 node = ofw_bus_get_node(dev);
98 if (OF_getprop(node, "sri-cambridge,width", &cell, sizeof(cell)) > 0)
100 (void)OF_getprop_alloc(node, "sri-cambridge,fileio", sizeof(char),
101 (void **)&str_fileio);
102 (void)OF_getprop_alloc(node, "sri-cambridge,mmapio", sizeof(char),
103 (void **)&str_mmapio);
104 (void)OF_getprop_alloc(node, "sri-cambridge,devname", sizeof(char),
105 (void **)&str_devname);
106 if (OF_getprop(node, "sri-cambridge,devunit", &cell, sizeof(cell)) > 0)
109 /* Memory allocation and checking. */
111 sc->avg_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
112 &sc->avg_rid, RF_ACTIVE);
113 if (sc->avg_res == NULL) {
114 device_printf(dev, "couldn't map memory\n");
117 error = altera_avgen_attach(sc, str_fileio, str_mmapio, str_devname,
120 bus_release_resource(dev, SYS_RES_MEMORY, sc->avg_rid,
122 if (str_fileio != NULL)
123 free(str_fileio, M_OFWPROP);
124 if (str_mmapio != NULL)
125 free(str_mmapio, M_OFWPROP);
126 if (str_devname != NULL)
127 free(str_devname, M_OFWPROP);
132 altera_avgen_fdt_detach(device_t dev)
134 struct altera_avgen_softc *sc;
136 sc = device_get_softc(dev);
137 altera_avgen_detach(sc);
138 bus_release_resource(dev, SYS_RES_MEMORY, sc->avg_rid, sc->avg_res);
142 static device_method_t altera_avgen_fdt_methods[] = {
143 DEVMETHOD(device_probe, altera_avgen_fdt_probe),
144 DEVMETHOD(device_attach, altera_avgen_fdt_attach),
145 DEVMETHOD(device_detach, altera_avgen_fdt_detach),
149 static driver_t altera_avgen_fdt_driver = {
151 altera_avgen_fdt_methods,
152 sizeof(struct altera_avgen_softc),
155 DRIVER_MODULE(avgen, simplebus, altera_avgen_fdt_driver,
156 altera_avgen_devclass, 0, 0);