/* $FreeBSD$ */
/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2008 Hans Petter Selasky. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifdef USB_GLOBAL_INCLUDE_FILE
#include USB_GLOBAL_INCLUDE_FILE
#else
#include <sys/stdint.h>
#include <sys/stddef.h>
#include <sys/param.h>
#include <sys/queue.h>
#include <sys/types.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/bus.h>
#include <sys/module.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/condvar.h>
#include <sys/sysctl.h>
#include <sys/sx.h>
#include <sys/unistd.h>
#include <sys/callout.h>
#include <sys/malloc.h>
#include <sys/priv.h>
#include <dev/usb/usb.h>
#include <dev/usb/usbdi.h>
#include <dev/usb/usbdi_util.h>
#include <dev/usb/usb_core.h>
#include <dev/usb/usb_util.h>
#include <dev/usb/usb_process.h>
#include <dev/usb/usb_device.h>
#include <dev/usb/usb_request.h>
#include <dev/usb/usb_busdma.h>
#include <dev/usb/usb_controller.h>
#include <dev/usb/usb_bus.h>
#endif /* USB_GLOBAL_INCLUDE_FILE */
/*------------------------------------------------------------------------*
* device_set_usb_desc
*
* This function can be called at probe or attach to set the USB
* device supplied textual description for the given device.
*------------------------------------------------------------------------*/
void
device_set_usb_desc(device_t dev)
{
struct usb_attach_arg *uaa;
struct usb_device *udev;
struct usb_interface *iface;
char *temp_p;
usb_error_t err;
uint8_t do_unlock;
if (dev == NULL) {
/* should not happen */
return;
}
uaa = device_get_ivars(dev);
if (uaa == NULL) {
/* can happen if called at the wrong time */
return;
}
udev = uaa->device;
iface = uaa->iface;
if ((iface == NULL) ||
(iface->idesc == NULL) ||
(iface->idesc->iInterface == 0)) {
err = USB_ERR_INVAL;
} else {
err = 0;
}
/* Protect scratch area */
do_unlock = usbd_ctrl_lock(udev);
temp_p = (char *)udev->scratch.data;
if (err == 0) {
/* try to get the interface string ! */
err = usbd_req_get_string_any(udev, NULL, temp_p,
sizeof(udev->scratch.data),
iface->idesc->iInterface);
}
if (err != 0) {
/* use default description */
usb_devinfo(udev, temp_p,
sizeof(udev->scratch.data));
}
if (do_unlock)
usbd_ctrl_unlock(udev);
device_set_desc_copy(dev, temp_p);
device_printf(dev, "<%s> on %s\n", temp_p,
device_get_nameunit(udev->bus->bdev));
}
/*------------------------------------------------------------------------*
* usb_pause_mtx - factored out code
*
* This function will delay the code by the passed number of system
* ticks. The passed mutex "mtx" will be dropped while waiting, if
* "mtx" is different from NULL.
*------------------------------------------------------------------------*/
void
usb_pause_mtx(struct mtx *mtx, int timo)
{
if (mtx != NULL)
mtx_unlock(mtx);
/*
* Add one tick to the timeout so that we don't return too
* early! Note that pause() will assert that the passed
* timeout is positive and non-zero!
*/
pause("USBWAIT", timo + 1);
if (mtx != NULL)
mtx_lock(mtx);
}
/*------------------------------------------------------------------------*
* usb_printbcd
*
* This function will print the version number "bcd" to the string
* pointed to by "p" having a maximum length of "p_len" bytes
* including the terminating zero.
*------------------------------------------------------------------------*/
void
usb_printbcd(char *p, uint16_t p_len, uint16_t bcd)
{
if (snprintf(p, p_len, "%x.%02x", bcd >> 8, bcd & 0xff)) {
/* ignore any errors */
}
}
/*------------------------------------------------------------------------*
* usb_trim_spaces
*
* This function removes spaces at the beginning and the end of the string
* pointed to by the "p" argument.
*------------------------------------------------------------------------*/
void
usb_trim_spaces(char *p)
{
char *q;
char *e;
if (p == NULL)
return;
q = e = p;
while (*q == ' ') /* skip leading spaces */
q++;
while ((*p = *q++)) /* copy string */
if (*p++ != ' ') /* remember last non-space */
e = p;
*e = 0; /* kill trailing spaces */
}
/*------------------------------------------------------------------------*
* usb_make_str_desc - convert an ASCII string into a UNICODE string
*------------------------------------------------------------------------*/
uint8_t
usb_make_str_desc(void *ptr, uint16_t max_len, const char *s)
{
struct usb_string_descriptor *p = ptr;
uint8_t totlen;
int j;
if (max_len < 2) {
/* invalid length */
return (0);
}
max_len = ((max_len / 2) - 1);
j = strlen(s);
if (j < 0) {
j = 0;
}
if (j > 126) {
j = 126;
}
if (max_len > j) {
max_len = j;
}
totlen = (max_len + 1) * 2;
p->bLength = totlen;
p->bDescriptorType = UDESC_STRING;
while (max_len--) {
USETW2(p->bString[max_len], 0, s[max_len]);
}
return (totlen);
}
