1/* $FreeBSD: releng/11.0/sys/dev/usb/usb_dynamic.c 290135 2015-10-29 08:28:39Z hselasky $ */
2/*-
3 * Copyright (c) 2008 Hans Petter Selasky. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#ifdef USB_GLOBAL_INCLUDE_FILE
28#include USB_GLOBAL_INCLUDE_FILE
29#else
30#include <sys/stdint.h>
31#include <sys/stddef.h>
32#include <sys/param.h>
33#include <sys/queue.h>
34#include <sys/types.h>
35#include <sys/systm.h>
36#include <sys/kernel.h>
37#include <sys/bus.h>
38#include <sys/module.h>
39#include <sys/lock.h>
40#include <sys/mutex.h>
41#include <sys/condvar.h>
42#include <sys/sysctl.h>
43#include <sys/sx.h>
44#include <sys/unistd.h>
45#include <sys/callout.h>
46#include <sys/malloc.h>
47#include <sys/priv.h>
48
49#include <dev/usb/usb.h>
50#include <dev/usb/usbdi.h>
51
52#include <dev/usb/usb_core.h>
53#include <dev/usb/usb_process.h>
54#include <dev/usb/usb_device.h>
55#include <dev/usb/usb_dynamic.h>
56#include <dev/usb/usb_request.h>
57#endif			/* USB_GLOBAL_INCLUDE_FILE */
58
59/* function prototypes */
60static usb_handle_req_t usb_temp_get_desc_w;
61static usb_temp_setup_by_index_t usb_temp_setup_by_index_w;
62#if USB_HAVE_COMPAT_LINUX
63static usb_linux_free_device_t usb_linux_free_device_w;
64#endif
65static usb_temp_unsetup_t usb_temp_unsetup_w;
66static usb_test_quirk_t usb_test_quirk_w;
67static usb_quirk_ioctl_t usb_quirk_ioctl_w;
68
69/* global variables */
70usb_handle_req_t *usb_temp_get_desc_p = &usb_temp_get_desc_w;
71usb_temp_setup_by_index_t *usb_temp_setup_by_index_p = &usb_temp_setup_by_index_w;
72#if USB_HAVE_COMPAT_LINUX
73usb_linux_free_device_t *usb_linux_free_device_p = &usb_linux_free_device_w;
74#endif
75usb_temp_unsetup_t *usb_temp_unsetup_p = &usb_temp_unsetup_w;
76usb_test_quirk_t *usb_test_quirk_p = &usb_test_quirk_w;
77usb_quirk_ioctl_t *usb_quirk_ioctl_p = &usb_quirk_ioctl_w;
78devclass_t usb_devclass_ptr;
79
80static usb_error_t
81usb_temp_setup_by_index_w(struct usb_device *udev, uint16_t index)
82{
83	return (USB_ERR_INVAL);
84}
85
86static uint8_t
87usb_test_quirk_w(const struct usbd_lookup_info *info, uint16_t quirk)
88{
89	return (0);			/* no match */
90}
91
92static int
93usb_quirk_ioctl_w(unsigned long cmd, caddr_t data, int fflag, struct thread *td)
94{
95	return (ENOIOCTL);
96}
97
98static usb_error_t
99usb_temp_get_desc_w(struct usb_device *udev, struct usb_device_request *req, const void **pPtr, uint16_t *pLength)
100{
101	/* stall */
102	return (USB_ERR_STALLED);
103}
104
105static void
106usb_temp_unsetup_w(struct usb_device *udev)
107{
108	usbd_free_config_desc(udev, udev->usb_template_ptr);
109	udev->usb_template_ptr = NULL;
110}
111
112#if USB_HAVE_COMPAT_LINUX
113static void
114usb_linux_free_device_w(struct usb_device *udev)
115{
116	/* NOP */
117}
118#endif
119
120void
121usb_quirk_unload(void *arg)
122{
123	/* reset function pointers */
124
125	usb_test_quirk_p = &usb_test_quirk_w;
126	usb_quirk_ioctl_p = &usb_quirk_ioctl_w;
127
128	/* wait for CPU to exit the loaded functions, if any */
129
130	/* XXX this is a tradeoff */
131
132	pause("WAIT", hz);
133}
134
135void
136usb_temp_unload(void *arg)
137{
138	/* reset function pointers */
139
140	usb_temp_get_desc_p = &usb_temp_get_desc_w;
141	usb_temp_setup_by_index_p = &usb_temp_setup_by_index_w;
142	usb_temp_unsetup_p = &usb_temp_unsetup_w;
143
144	/* wait for CPU to exit the loaded functions, if any */
145
146	/* XXX this is a tradeoff */
147
148	pause("WAIT", hz);
149}
150
151void
152usb_bus_unload(void *arg)
153{
154	/* reset function pointers */
155
156	usb_devclass_ptr = NULL;
157
158	/* wait for CPU to exit the loaded functions, if any */
159
160	/* XXX this is a tradeoff */
161
162	pause("WAIT", hz);
163}
164
165#if USB_HAVE_COMPAT_LINUX
166void
167usb_linux_unload(void *arg)
168{
169	/* reset function pointers */
170
171	usb_linux_free_device_p = &usb_linux_free_device_w;
172
173	/* wait for CPU to exit the loaded functions, if any */
174
175	/* XXX this is a tradeoff */
176
177	pause("WAIT", hz);
178}
179#endif
180