1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2012 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/param.h>
34 #include <sys/bus.h>
35 #include <sys/condvar.h>
36 #include <sys/conf.h>
37 #include <sys/bio.h>
38 #include <sys/kernel.h>
39 #include <sys/lock.h>
40 #include <sys/malloc.h>
41 #include <sys/module.h>
42 #include <sys/mutex.h>
43 #include <sys/rman.h>
44 #include <sys/systm.h>
45 #include <sys/taskqueue.h>
46
47 #include <machine/bus.h>
48 #include <machine/resource.h>
49
50 #include <geom/geom_disk.h>
51
52 #include <dev/altera/sdcard/altera_sdcard.h>
53
54 /*
55 * Nexus bus attachment for the Altera SD Card IP core. Appropriate for most
56 * Altera FPGA SoC-style configurations in which the IP core will be exposed
57 * to the processor via a memory-mapped Avalon bus.
58 */
59 static int
altera_sdcard_nexus_probe(device_t dev)60 altera_sdcard_nexus_probe(device_t dev)
61 {
62
63 device_set_desc(dev, "Altera Secure Data Card IP Core");
64 return (BUS_PROBE_NOWILDCARD);
65 }
66
67 static int
altera_sdcard_nexus_attach(device_t dev)68 altera_sdcard_nexus_attach(device_t dev)
69 {
70 struct altera_sdcard_softc *sc;
71
72 sc = device_get_softc(dev);
73 sc->as_dev = dev;
74 sc->as_unit = device_get_unit(dev);
75 sc->as_rid = 0;
76 sc->as_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
77 &sc->as_rid, RF_ACTIVE);
78 if (sc->as_res == NULL) {
79 device_printf(dev, "couldn't map memory\n");
80 return (ENXIO);
81 }
82 altera_sdcard_attach(sc);
83 return (0);
84 }
85
86 static int
altera_sdcard_nexus_detach(device_t dev)87 altera_sdcard_nexus_detach(device_t dev)
88 {
89 struct altera_sdcard_softc *sc;
90
91 sc = device_get_softc(dev);
92 KASSERT(sc->as_res != NULL, ("%s: resources not allocated",
93 __func__));
94 altera_sdcard_detach(sc);
95 bus_release_resource(dev, SYS_RES_MEMORY, sc->as_rid, sc->as_res);
96 return (0);
97 }
98
99 static device_method_t altera_sdcard_nexus_methods[] = {
100 DEVMETHOD(device_probe, altera_sdcard_nexus_probe),
101 DEVMETHOD(device_attach, altera_sdcard_nexus_attach),
102 DEVMETHOD(device_detach, altera_sdcard_nexus_detach),
103 { 0, 0 }
104 };
105
106 static driver_t altera_sdcard_nexus_driver = {
107 "altera_sdcardc",
108 altera_sdcard_nexus_methods,
109 sizeof(struct altera_sdcard_softc),
110 };
111
112 DRIVER_MODULE(altera_sdcard, nexus, altera_sdcard_nexus_driver, 0, 0);
113