1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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/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/bio.h>
41 #include <sys/kernel.h>
42 #include <sys/lock.h>
43 #include <sys/malloc.h>
44 #include <sys/module.h>
45 #include <sys/mutex.h>
46 #include <sys/rman.h>
47 #include <sys/systm.h>
48 #include <sys/taskqueue.h>
49
50 #include <machine/bus.h>
51 #include <machine/resource.h>
52
53 #include <geom/geom_disk.h>
54
55 #include <dev/altera/sdcard/altera_sdcard.h>
56
57 /*
58 * Nexus bus attachment for the Altera SD Card IP core. Appropriate for most
59 * Altera FPGA SoC-style configurations in which the IP core will be exposed
60 * to the processor via a memory-mapped Avalon bus.
61 */
62 static int
63 altera_sdcard_nexus_probe(device_t dev)
64 {
65
66 device_set_desc(dev, "Altera Secure Data Card IP Core");
67 return (BUS_PROBE_NOWILDCARD);
68 }
69
70 static int
71 altera_sdcard_nexus_attach(device_t dev)
72 {
73 struct altera_sdcard_softc *sc;
74
75 sc = device_get_softc(dev);
76 sc->as_dev = dev;
77 sc->as_unit = device_get_unit(dev);
78 sc->as_rid = 0;
79 sc->as_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
80 &sc->as_rid, RF_ACTIVE);
81 if (sc->as_res == NULL) {
82 device_printf(dev, "couldn't map memory\n");
83 return (ENXIO);
84 }
85 altera_sdcard_attach(sc);
86 return (0);
87 }
88
89 static int
90 altera_sdcard_nexus_detach(device_t dev)
91 {
92 struct altera_sdcard_softc *sc;
93
94 sc = device_get_softc(dev);
95 KASSERT(sc->as_res != NULL, ("%s: resources not allocated",
96 __func__));
97 altera_sdcard_detach(sc);
98 bus_release_resource(dev, SYS_RES_MEMORY, sc->as_rid, sc->as_res);
99 return (0);
100 }
101
102 static device_method_t altera_sdcard_nexus_methods[] = {
103 DEVMETHOD(device_probe, altera_sdcard_nexus_probe),
104 DEVMETHOD(device_attach, altera_sdcard_nexus_attach),
105 DEVMETHOD(device_detach, altera_sdcard_nexus_detach),
106 { 0, 0 }
107 };
108
109 static driver_t altera_sdcard_nexus_driver = {
110 "altera_sdcardc",
111 altera_sdcard_nexus_methods,
112 sizeof(struct altera_sdcard_softc),
113 };
114
115 DRIVER_MODULE(altera_sdcard, nexus, altera_sdcard_nexus_driver,
116 altera_sdcard_devclass, 0, 0);
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