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 */
61 static usb_handle_req_t usb_temp_get_desc_w;
62 static usb_temp_setup_by_index_t usb_temp_setup_by_index_w;
63 #if USB_HAVE_COMPAT_LINUX
64 static usb_linux_free_device_t usb_linux_free_device_w;
65 #endif
66 static usb_temp_unsetup_t usb_temp_unsetup_w;
67 static usb_test_quirk_t usb_test_quirk_w;
68 static usb_quirk_ioctl_t usb_quirk_ioctl_w;
69
70 /* global variables */
71 usb_handle_req_t *usb_temp_get_desc_p = &usb_temp_get_desc_w;
72 usb_temp_setup_by_index_t *usb_temp_setup_by_index_p = &usb_temp_setup_by_index_w;
73 #if USB_HAVE_COMPAT_LINUX
74 usb_linux_free_device_t *usb_linux_free_device_p = &usb_linux_free_device_w;
75 #endif
76 usb_temp_unsetup_t *usb_temp_unsetup_p = &usb_temp_unsetup_w;
77 usb_test_quirk_t *usb_test_quirk_p = &usb_test_quirk_w;
78 usb_quirk_ioctl_t *usb_quirk_ioctl_p = &usb_quirk_ioctl_w;
79 devclass_t usb_devclass_ptr;
80
81 static usb_error_t
usb_temp_setup_by_index_w(struct usb_device * udev,uint16_t index)82 usb_temp_setup_by_index_w(struct usb_device *udev, uint16_t index)
83 {
84 return (USB_ERR_INVAL);
85 }
86
87 static uint8_t
usb_test_quirk_w(const struct usbd_lookup_info * info,uint16_t quirk)88 usb_test_quirk_w(const struct usbd_lookup_info *info, uint16_t quirk)
89 {
90 return (0); /* no match */
91 }
92
93 static int
usb_quirk_ioctl_w(unsigned long cmd,caddr_t data,int fflag,struct thread * td)94 usb_quirk_ioctl_w(unsigned long cmd, caddr_t data, int fflag, struct thread *td)
95 {
96 return (ENOIOCTL);
97 }
98
99 static usb_error_t
usb_temp_get_desc_w(struct usb_device * udev,struct usb_device_request * req,const void ** pPtr,uint16_t * pLength)100 usb_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
106 static void
usb_temp_unsetup_w(struct usb_device * udev)107 usb_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
114 static void
usb_linux_free_device_w(struct usb_device * udev)115 usb_linux_free_device_w(struct usb_device *udev)
116 {
117 /* NOP */
118 }
119 #endif
120
121 void
usb_quirk_unload(void * arg)122 usb_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
136 void
usb_temp_unload(void * arg)137 usb_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
152 void
usb_bus_unload(void * arg)153 usb_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
167 void
usb_linux_unload(void * arg)168 usb_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