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/param.h>
29 #include <sys/queue.h>
30 #include <sys/types.h>
31 #include <sys/systm.h>
32 #include <sys/kernel.h>
34 #include <sys/module.h>
36 #include <sys/mutex.h>
37 #include <sys/condvar.h>
38 #include <sys/sysctl.h>
39 #include <sys/unistd.h>
40 #include <sys/callout.h>
41 #include <sys/malloc.h>
44 #include <bus/u4b/usb.h>
45 #include <bus/u4b/usbdi.h>
46 #include <bus/u4b/usbdi_util.h>
48 #include <bus/u4b/usb_core.h>
49 #include <bus/u4b/usb_util.h>
50 #include <bus/u4b/usb_process.h>
51 #include <bus/u4b/usb_device.h>
52 #include <bus/u4b/usb_request.h>
53 #include <bus/u4b/usb_busdma.h>
55 #include <bus/u4b/usb_controller.h>
56 #include <bus/u4b/usb_bus.h>
58 /*------------------------------------------------------------------------*
61 * This function can be called at probe or attach to set the USB
62 * device supplied textual description for the given device.
63 *------------------------------------------------------------------------*/
65 device_set_usb_desc(device_t dev)
67 struct usb_attach_arg *uaa;
68 struct usb_device *udev;
69 struct usb_interface *iface;
74 /* should not happen */
77 uaa = device_get_ivars(dev);
79 /* can happen if called at the wrong time */
85 if ((iface == NULL) ||
86 (iface->idesc == NULL) ||
87 (iface->idesc->iInterface == 0)) {
93 temp_p = (char *)udev->bus->scratch[0].data;
96 /* try to get the interface string ! */
97 err = usbd_req_get_string_any
99 sizeof(udev->bus->scratch), iface->idesc->iInterface);
102 /* use default description */
103 usb_devinfo(udev, temp_p,
104 sizeof(udev->bus->scratch));
106 device_set_desc_copy(dev, temp_p);
107 device_printf(dev, "<%s> on %s\n", temp_p,
108 device_get_nameunit(udev->bus->bdev));
111 /*------------------------------------------------------------------------*
112 * usb_pause_mtx - factored out code
114 * This function will delay the code by the passed number of system
115 * ticks. The passed mutex "mtx" will be dropped while waiting, if
116 * "mtx" is different from NULL.
117 *------------------------------------------------------------------------*/
119 usb_pause_mtx(struct lock *lock, int timo)
122 * Add one tick to the timeout so that we don't return too
123 * early! Note that pause() will assert that the passed
124 * timeout is positive and non-zero!
127 lksleep(&usb_pause_mtx, lock, 0, "USBSLP", timo + 1);
129 KKASSERT(timo + 1 > 0);
130 tsleep(&usb_pause_mtx, 0, "USBSLP", timo + 1);
134 /*------------------------------------------------------------------------*
137 * This function will print the version number "bcd" to the string
138 * pointed to by "p" having a maximum length of "p_len" bytes
139 * including the terminating zero.
140 *------------------------------------------------------------------------*/
142 usb_printbcd(char *p, uint16_t p_len, uint16_t bcd)
144 if (ksnprintf(p, p_len, "%x.%02x", bcd >> 8, bcd & 0xff)) {
145 /* ignore any errors */
149 /*------------------------------------------------------------------------*
152 * This function removes spaces at the beginning and the end of the string
153 * pointed to by the "p" argument.
154 *------------------------------------------------------------------------*/
156 usb_trim_spaces(char *p)
164 while (*q == ' ') /* skip leading spaces */
166 while ((*p = *q++)) /* copy string */
167 if (*p++ != ' ') /* remember last non-space */
169 *e = 0; /* kill trailing spaces */
172 /*------------------------------------------------------------------------*
173 * usb_make_str_desc - convert an ASCII string into a UNICODE string
174 *------------------------------------------------------------------------*/
176 usb_make_str_desc(void *ptr, uint16_t max_len, const char *s)
178 struct usb_string_descriptor *p = ptr;
186 max_len = ((max_len / 2) - 1);
199 totlen = (max_len + 1) * 2;
202 p->bDescriptorType = UDESC_STRING;
205 USETW2(p->bString[max_len], 0, s[max_len]);
211 usb_callout_timeout_wrapper(void *arg)
213 struct usb_callout *uco = (struct usb_callout *)arg;
215 KKASSERT(uco != NULL);
218 * Simulate FreeBSD's callout behaviour which allows
219 * a lock to be acquired before the function is called
222 lockmgr(uco->uco_lock, LK_EXCLUSIVE);
223 uco->uco_func(uco->uco_arg);
224 lockmgr(uco->uco_lock, LK_RELEASE);
225 /* XXX Have to introduce flags and release lock? */
229 usb_callout_init_mtx_dfly(struct usb_callout *uco, struct lock *lock,
232 callout_init(&uco->co);
233 uco->uco_lock = lock;
234 uco->uco_flags = flags;
238 usb_callout_reset_dfly(struct usb_callout *uco, int ticks, timeout_t *func,
241 KKASSERT(uco != NULL);
242 uco->uco_func = func;
245 callout_reset(&uco->co, ticks, &usb_callout_timeout_wrapper, uco);