3 * Copyright (c) 2008 Hans Petter Selasky. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
27 #include <sys/stdint.h>
28 #include <sys/stddef.h>
29 #include <sys/param.h>
30 #include <sys/queue.h>
31 #include <sys/types.h>
32 #include <sys/systm.h>
33 #include <sys/kernel.h>
35 #include <sys/linker_set.h>
36 #include <sys/module.h>
38 #include <sys/mutex.h>
39 #include <sys/condvar.h>
40 #include <sys/sysctl.h>
42 #include <sys/unistd.h>
43 #include <sys/callout.h>
44 #include <sys/malloc.h>
47 #include <dev/usb/usb.h>
48 #include <dev/usb/usbdi.h>
49 #include <dev/usb/usbdi_util.h>
51 #include <dev/usb/usb_core.h>
52 #include <dev/usb/usb_util.h>
53 #include <dev/usb/usb_process.h>
54 #include <dev/usb/usb_device.h>
55 #include <dev/usb/usb_request.h>
56 #include <dev/usb/usb_busdma.h>
58 #include <dev/usb/usb_controller.h>
59 #include <dev/usb/usb_bus.h>
61 /*------------------------------------------------------------------------*
62 * device_delete_all_children - delete all children of a device
63 *------------------------------------------------------------------------*/
64 #ifndef device_delete_all_children
66 device_delete_all_children(device_t dev)
72 error = device_get_children(dev, &devlist, &devcount);
74 while (devcount-- > 0) {
75 error = device_delete_child(dev, devlist[devcount]);
80 free(devlist, M_TEMP);
86 /*------------------------------------------------------------------------*
89 * This function can be called at probe or attach to set the USB
90 * device supplied textual description for the given device.
91 *------------------------------------------------------------------------*/
93 device_set_usb_desc(device_t dev)
95 struct usb_attach_arg *uaa;
96 struct usb_device *udev;
97 struct usb_interface *iface;
102 /* should not happen */
105 uaa = device_get_ivars(dev);
107 /* can happen if called at the wrong time */
113 if ((iface == NULL) ||
114 (iface->idesc == NULL) ||
115 (iface->idesc->iInterface == 0)) {
121 temp_p = (char *)udev->bus->scratch[0].data;
124 /* try to get the interface string ! */
125 err = usbd_req_get_string_any
127 sizeof(udev->bus->scratch), iface->idesc->iInterface);
130 /* use default description */
131 usb_devinfo(udev, temp_p,
132 sizeof(udev->bus->scratch));
134 device_set_desc_copy(dev, temp_p);
135 device_printf(dev, "<%s> on %s\n", temp_p,
136 device_get_nameunit(udev->bus->bdev));
139 /*------------------------------------------------------------------------*
140 * usb_pause_mtx - factored out code
142 * This function will delay the code by the passed number of system
143 * ticks. The passed mutex "mtx" will be dropped while waiting, if
145 *------------------------------------------------------------------------*/
147 usb_pause_mtx(struct mtx *mtx, int _ticks)
153 /* convert to milliseconds */
154 _ticks = (_ticks * 1000) / hz;
155 /* convert to microseconds, rounded up */
156 _ticks = (_ticks + 1) * 1000;
162 * Add one to the number of ticks so that we don't return
167 if (pause("USBWAIT", _ticks)) {
175 /*------------------------------------------------------------------------*
178 * This function will print the version number "bcd" to the string
179 * pointed to by "p" having a maximum length of "p_len" bytes
180 * including the terminating zero.
181 *------------------------------------------------------------------------*/
183 usb_printbcd(char *p, uint16_t p_len, uint16_t bcd)
185 if (snprintf(p, p_len, "%x.%02x", bcd >> 8, bcd & 0xff)) {
186 /* ignore any errors */
190 /*------------------------------------------------------------------------*
193 * This function removes spaces at the beginning and the end of the string
194 * pointed to by the "p" argument.
195 *------------------------------------------------------------------------*/
197 usb_trim_spaces(char *p)
205 while (*q == ' ') /* skip leading spaces */
207 while ((*p = *q++)) /* copy string */
208 if (*p++ != ' ') /* remember last non-space */
210 *e = 0; /* kill trailing spaces */
213 /*------------------------------------------------------------------------*
214 * usb_make_str_desc - convert an ASCII string into a UNICODE string
215 *------------------------------------------------------------------------*/
217 usb_make_str_desc(void *ptr, uint16_t max_len, const char *s)
219 struct usb_string_descriptor *p = ptr;
227 max_len = ((max_len / 2) - 1);
240 totlen = (max_len + 1) * 2;
243 p->bDescriptorType = UDESC_STRING;
246 USETW2(p->bString[max_len], 0, s[max_len]);