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/module.h>
37 #include <sys/mutex.h>
38 #include <sys/condvar.h>
39 #include <sys/sysctl.h>
41 #include <sys/unistd.h>
42 #include <sys/callout.h>
43 #include <sys/malloc.h>
46 #include <dev/usb/usb.h>
47 #include <dev/usb/usbdi.h>
48 #include <dev/usb/usbdi_util.h>
50 #include <dev/usb/usb_core.h>
51 #include <dev/usb/usb_util.h>
52 #include <dev/usb/usb_process.h>
53 #include <dev/usb/usb_device.h>
54 #include <dev/usb/usb_request.h>
55 #include <dev/usb/usb_busdma.h>
57 #include <dev/usb/usb_controller.h>
58 #include <dev/usb/usb_bus.h>
60 /*------------------------------------------------------------------------*
61 * device_delete_all_children - delete all children of a device
62 *------------------------------------------------------------------------*/
63 #ifndef device_delete_all_children
65 device_delete_all_children(device_t dev)
71 error = device_get_children(dev, &devlist, &devcount);
73 while (devcount-- > 0) {
74 error = device_delete_child(dev, devlist[devcount]);
79 free(devlist, M_TEMP);
85 /*------------------------------------------------------------------------*
88 * This function can be called at probe or attach to set the USB
89 * device supplied textual description for the given device.
90 *------------------------------------------------------------------------*/
92 device_set_usb_desc(device_t dev)
94 struct usb_attach_arg *uaa;
95 struct usb_device *udev;
96 struct usb_interface *iface;
101 /* should not happen */
104 uaa = device_get_ivars(dev);
106 /* can happen if called at the wrong time */
112 if ((iface == NULL) ||
113 (iface->idesc == NULL) ||
114 (iface->idesc->iInterface == 0)) {
120 temp_p = (char *)udev->bus->scratch[0].data;
123 /* try to get the interface string ! */
124 err = usbd_req_get_string_any
126 sizeof(udev->bus->scratch), iface->idesc->iInterface);
129 /* use default description */
130 usb_devinfo(udev, temp_p,
131 sizeof(udev->bus->scratch));
133 device_set_desc_copy(dev, temp_p);
134 device_printf(dev, "<%s> on %s\n", temp_p,
135 device_get_nameunit(udev->bus->bdev));
138 /*------------------------------------------------------------------------*
139 * usb_pause_mtx - factored out code
141 * This function will delay the code by the passed number of system
142 * ticks. The passed mutex "mtx" will be dropped while waiting, if
144 *------------------------------------------------------------------------*/
146 usb_pause_mtx(struct mtx *mtx, int _ticks)
152 /* convert to milliseconds */
153 _ticks = (_ticks * 1000) / hz;
154 /* convert to microseconds, rounded up */
155 _ticks = (_ticks + 1) * 1000;
161 * Add one to the number of ticks so that we don't return
166 if (pause("USBWAIT", _ticks)) {
174 /*------------------------------------------------------------------------*
177 * This function will print the version number "bcd" to the string
178 * pointed to by "p" having a maximum length of "p_len" bytes
179 * including the terminating zero.
180 *------------------------------------------------------------------------*/
182 usb_printbcd(char *p, uint16_t p_len, uint16_t bcd)
184 if (snprintf(p, p_len, "%x.%02x", bcd >> 8, bcd & 0xff)) {
185 /* ignore any errors */
189 /*------------------------------------------------------------------------*
192 * This function removes spaces at the beginning and the end of the string
193 * pointed to by the "p" argument.
194 *------------------------------------------------------------------------*/
196 usb_trim_spaces(char *p)
204 while (*q == ' ') /* skip leading spaces */
206 while ((*p = *q++)) /* copy string */
207 if (*p++ != ' ') /* remember last non-space */
209 *e = 0; /* kill trailing spaces */
212 /*------------------------------------------------------------------------*
213 * usb_make_str_desc - convert an ASCII string into a UNICODE string
214 *------------------------------------------------------------------------*/
216 usb_make_str_desc(void *ptr, uint16_t max_len, const char *s)
218 struct usb_string_descriptor *p = ptr;
226 max_len = ((max_len / 2) - 1);
239 totlen = (max_len + 1) * 2;
242 p->bDescriptorType = UDESC_STRING;
245 USETW2(p->bString[max_len], 0, s[max_len]);