altera_sdcard_fdt.c revision 331722 
1/*-
2 * Copyright (c) 2012 Robert N. M. Watson
3 * All rights reserved.
4 *
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.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
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.
17 *
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
28 * SUCH DAMAGE.
29 */
30
31#include <sys/cdefs.h>
32__FBSDID("$FreeBSD: stable/11/sys/dev/altera/sdcard/altera_sdcard_fdt.c 331722 2018-03-29 02:50:57Z eadler $");
33
34#include <sys/param.h>
35#include <sys/bus.h>
36#include <sys/condvar.h>
37#include <sys/conf.h>
38#include <sys/bio.h>
39#include <sys/kernel.h>
40#include <sys/lock.h>
41#include <sys/malloc.h>
42#include <sys/module.h>
43#include <sys/mutex.h>
44#include <sys/rman.h>
45#include <sys/systm.h>
46#include <sys/taskqueue.h>
47
48#include <machine/bus.h>
49#include <machine/resource.h>
50
51#include <geom/geom_disk.h>
52
53#include <dev/altera/sdcard/altera_sdcard.h>
54
55#include <dev/fdt/fdt_common.h>
56#include <dev/ofw/openfirm.h>
57#include <dev/ofw/ofw_bus.h>
58#include <dev/ofw/ofw_bus_subr.h>
59
60/*
61 * FDT bus attachment for the Altera SD Card IP core.
62 */
63static int
64altera_sdcard_fdt_probe(device_t dev)
65{
66
67	if (!ofw_bus_status_okay(dev))
68		return (ENXIO);
69
70	if (ofw_bus_is_compatible(dev, "altera,sdcard_11_2011")) {
71		device_set_desc(dev, "Altera Secure Data Card IP Core");
72		return (BUS_PROBE_DEFAULT);
73	}
74	return (ENXIO);
75}
76
77static int
78altera_sdcard_fdt_attach(device_t dev)
79{
80	struct altera_sdcard_softc *sc;
81
82	sc = device_get_softc(dev);
83	sc->as_dev = dev;
84	sc->as_unit = device_get_unit(dev);
85	sc->as_rid = 0;
86	sc->as_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
87	    &sc->as_rid, RF_ACTIVE);
88	if (sc->as_res == NULL) {
89		device_printf(dev, "couldn't map memory\n");
90		return (ENXIO);
91	}
92	altera_sdcard_attach(sc);
93	return (0);
94}
95
96static int
97altera_sdcard_fdt_detach(device_t dev)
98{
99	struct altera_sdcard_softc *sc;
100
101	sc = device_get_softc(dev);
102	KASSERT(sc->as_res != NULL, ("%s: resources not allocated",
103	    __func__));
104	altera_sdcard_detach(sc);
105	bus_release_resource(dev, SYS_RES_MEMORY, sc->as_rid, sc->as_res);
106	return (0);
107}
108
109static device_method_t altera_sdcard_fdt_methods[] = {
110	DEVMETHOD(device_probe,		altera_sdcard_fdt_probe),
111	DEVMETHOD(device_attach,	altera_sdcard_fdt_attach),
112	DEVMETHOD(device_detach,	altera_sdcard_fdt_detach),
113	{ 0, 0 }
114};
115
116static driver_t altera_sdcard_fdt_driver = {
117	"altera_sdcardc",
118	altera_sdcard_fdt_methods,
119	sizeof(struct altera_sdcard_softc),
120};
121
122DRIVER_MODULE(altera_sdcard, simplebus, altera_sdcard_fdt_driver,
123    altera_sdcard_devclass, 0, 0);
124