1/* $FreeBSD: stable/11/stand/usb/storage/umass_common.c 291401 2015-11-27 18:16:10Z zbb $ */
2/*-
3 * Copyright (c) 2014 Hans Petter Selasky <hselasky@FreeBSD.org>
4 * All rights reserved.
5 *
6 * This software was developed by SRI International and the University of
7 * Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237)
8 * ("CTSRD"), as part of the DARPA CRASH research programme.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32#include USB_GLOBAL_INCLUDE_FILE
33
34#include "umass_common.h"
35
36struct usb_attach_arg umass_uaa;
37
38static device_probe_t umass_probe;
39static device_attach_t umass_attach;
40static device_detach_t umass_detach;
41
42static devclass_t umass_devclass;
43
44static device_method_t umass_methods[] = {
45	/* Device interface */
46	DEVMETHOD(device_probe, umass_probe),
47	DEVMETHOD(device_attach, umass_attach),
48	DEVMETHOD(device_detach, umass_detach),
49
50	DEVMETHOD_END
51};
52
53static driver_t umass_driver = {
54	.name = "umass",
55	.methods = umass_methods,
56};
57
58DRIVER_MODULE(umass, uhub, umass_driver, umass_devclass, NULL, 0);
59
60static int
61umass_probe(device_t dev)
62{
63	struct usb_attach_arg *uaa = device_get_ivars(dev);
64
65	if (uaa->usb_mode != USB_MODE_HOST ||
66	    uaa->info.bInterfaceClass != UICLASS_MASS ||
67	    uaa->info.bInterfaceSubClass != UISUBCLASS_SCSI ||
68	    uaa->info.bInterfaceProtocol != UIPROTO_MASS_BBB ||
69	    device_get_unit(dev) != 0)
70		return (ENXIO);
71	return (0);
72}
73
74static int
75umass_attach(device_t dev)
76{
77	struct usb_attach_arg *uaa = device_get_ivars(dev);
78	umass_uaa = *uaa;
79	return (0);			/* success */
80}
81
82static int
83umass_detach(device_t dev)
84{
85
86#ifdef USB_DEBUG
87	memset(&umass_uaa, 0, sizeof(umass_uaa));
88#endif
89	return (0);
90}
91