1/*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2008 Hans Petter Selasky. All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28#ifdef USB_GLOBAL_INCLUDE_FILE
29#include USB_GLOBAL_INCLUDE_FILE
30#else
31#include <sys/stdint.h>
32#include <sys/stddef.h>
33#include <sys/param.h>
34#include <sys/queue.h>
35#include <sys/types.h>
36#include <sys/systm.h>
37#include <sys/kernel.h>
38#include <sys/bus.h>
39#include <sys/module.h>
40#include <sys/lock.h>
41#include <sys/mutex.h>
42#include <sys/condvar.h>
43#include <sys/sysctl.h>
44#include <sys/sx.h>
45#include <sys/unistd.h>
46#include <sys/callout.h>
47#include <sys/malloc.h>
48#include <sys/priv.h>
49
50#include <dev/usb/usb.h>
51#include <dev/usb/usbdi.h>
52
53#include <dev/usb/usb_core.h>
54#include <dev/usb/usb_process.h>
55#include <dev/usb/usb_device.h>
56#include <dev/usb/usb_dynamic.h>
57#include <dev/usb/usb_request.h>
58#endif			/* USB_GLOBAL_INCLUDE_FILE */
59
60/* function prototypes */
61static usb_handle_req_t usb_temp_get_desc_w;
62static usb_temp_setup_by_index_t usb_temp_setup_by_index_w;
63#if USB_HAVE_COMPAT_LINUX
64static usb_linux_free_device_t usb_linux_free_device_w;
65#endif
66static usb_temp_unsetup_t usb_temp_unsetup_w;
67static usb_test_quirk_t usb_test_quirk_w;
68static usb_quirk_ioctl_t usb_quirk_ioctl_w;
69
70/* global variables */
71usb_handle_req_t *usb_temp_get_desc_p = &usb_temp_get_desc_w;
72usb_temp_setup_by_index_t *usb_temp_setup_by_index_p = &usb_temp_setup_by_index_w;
73#if USB_HAVE_COMPAT_LINUX
74usb_linux_free_device_t *usb_linux_free_device_p = &usb_linux_free_device_w;
75#endif
76usb_temp_unsetup_t *usb_temp_unsetup_p = &usb_temp_unsetup_w;
77usb_test_quirk_t *usb_test_quirk_p = &usb_test_quirk_w;
78usb_quirk_ioctl_t *usb_quirk_ioctl_p = &usb_quirk_ioctl_w;
79devclass_t usb_devclass_ptr;
80
81static usb_error_t
82usb_temp_setup_by_index_w(struct usb_device *udev, uint16_t index)
83{
84	return (USB_ERR_INVAL);
85}
86
87static uint8_t
88usb_test_quirk_w(const struct usbd_lookup_info *info, uint16_t quirk)
89{
90	return (0);			/* no match */
91}
92
93static int
94usb_quirk_ioctl_w(unsigned long cmd, caddr_t data, int fflag, struct thread *td)
95{
96	return (ENOIOCTL);
97}
98
99static usb_error_t
100usb_temp_get_desc_w(struct usb_device *udev, struct usb_device_request *req, const void **pPtr, uint16_t *pLength)
101{
102	/* stall */
103	return (USB_ERR_STALLED);
104}
105
106static void
107usb_temp_unsetup_w(struct usb_device *udev)
108{
109	usbd_free_config_desc(udev, udev->usb_template_ptr);
110	udev->usb_template_ptr = NULL;
111}
112
113#if USB_HAVE_COMPAT_LINUX
114static void
115usb_linux_free_device_w(struct usb_device *udev)
116{
117	/* NOP */
118}
119#endif
120
121void
122usb_quirk_unload(void *arg)
123{
124	/* reset function pointers */
125
126	usb_test_quirk_p = &usb_test_quirk_w;
127	usb_quirk_ioctl_p = &usb_quirk_ioctl_w;
128
129	/* wait for CPU to exit the loaded functions, if any */
130
131	/* XXX this is a tradeoff */
132
133	pause("WAIT", hz);
134}
135
136void
137usb_temp_unload(void *arg)
138{
139	/* reset function pointers */
140
141	usb_temp_get_desc_p = &usb_temp_get_desc_w;
142	usb_temp_setup_by_index_p = &usb_temp_setup_by_index_w;
143	usb_temp_unsetup_p = &usb_temp_unsetup_w;
144
145	/* wait for CPU to exit the loaded functions, if any */
146
147	/* XXX this is a tradeoff */
148
149	pause("WAIT", hz);
150}
151
152void
153usb_bus_unload(void *arg)
154{
155	/* reset function pointers */
156
157	usb_devclass_ptr = NULL;
158
159	/* wait for CPU to exit the loaded functions, if any */
160
161	/* XXX this is a tradeoff */
162
163	pause("WAIT", hz);
164}
165
166#if USB_HAVE_COMPAT_LINUX
167void
168usb_linux_unload(void *arg)
169{
170	/* reset function pointers */
171
172	usb_linux_free_device_p = &usb_linux_free_device_w;
173
174	/* wait for CPU to exit the loaded functions, if any */
175
176	/* XXX this is a tradeoff */
177
178	pause("WAIT", hz);
179}
180#endif
181