249 lines
6.5 KiB
C
249 lines
6.5 KiB
C
/* $FreeBSD$ */
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/*-
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* Copyright (c) 2008 Hans Petter Selasky. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/stdint.h>
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#include <sys/stddef.h>
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#include <sys/param.h>
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#include <sys/queue.h>
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#include <sys/types.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/bus.h>
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#include <sys/module.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <sys/condvar.h>
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#include <sys/sysctl.h>
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#include <sys/sx.h>
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#include <sys/unistd.h>
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#include <sys/callout.h>
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#include <sys/malloc.h>
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#include <sys/priv.h>
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#include <dev/usb/usb.h>
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#include <dev/usb/usbdi.h>
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#include <dev/usb/usbdi_util.h>
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#include <dev/usb/usb_core.h>
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#include <dev/usb/usb_util.h>
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#include <dev/usb/usb_process.h>
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#include <dev/usb/usb_device.h>
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#include <dev/usb/usb_request.h>
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#include <dev/usb/usb_busdma.h>
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#include <dev/usb/usb_controller.h>
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#include <dev/usb/usb_bus.h>
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/*------------------------------------------------------------------------*
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* device_delete_all_children - delete all children of a device
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*------------------------------------------------------------------------*/
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#ifndef device_delete_all_children
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int
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device_delete_all_children(device_t dev)
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{
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device_t *devlist;
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int devcount;
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int error;
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error = device_get_children(dev, &devlist, &devcount);
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if (error == 0) {
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while (devcount-- > 0) {
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error = device_delete_child(dev, devlist[devcount]);
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if (error) {
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break;
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}
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}
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free(devlist, M_TEMP);
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}
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return (error);
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}
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#endif
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/*------------------------------------------------------------------------*
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* device_set_usb_desc
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*
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* This function can be called at probe or attach to set the USB
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* device supplied textual description for the given device.
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*------------------------------------------------------------------------*/
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void
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device_set_usb_desc(device_t dev)
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{
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struct usb_attach_arg *uaa;
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struct usb_device *udev;
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struct usb_interface *iface;
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char *temp_p;
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usb_error_t err;
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if (dev == NULL) {
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/* should not happen */
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return;
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}
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uaa = device_get_ivars(dev);
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if (uaa == NULL) {
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/* can happen if called at the wrong time */
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return;
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}
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udev = uaa->device;
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iface = uaa->iface;
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if ((iface == NULL) ||
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(iface->idesc == NULL) ||
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(iface->idesc->iInterface == 0)) {
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err = USB_ERR_INVAL;
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} else {
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err = 0;
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}
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temp_p = (char *)udev->bus->scratch[0].data;
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if (!err) {
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/* try to get the interface string ! */
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err = usbd_req_get_string_any
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(udev, NULL, temp_p,
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sizeof(udev->bus->scratch), iface->idesc->iInterface);
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}
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if (err) {
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/* use default description */
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usb_devinfo(udev, temp_p,
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sizeof(udev->bus->scratch));
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}
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device_set_desc_copy(dev, temp_p);
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device_printf(dev, "<%s> on %s\n", temp_p,
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device_get_nameunit(udev->bus->bdev));
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}
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/*------------------------------------------------------------------------*
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* usb_pause_mtx - factored out code
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*
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* This function will delay the code by the passed number of system
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* ticks. The passed mutex "mtx" will be dropped while waiting, if
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* "mtx" is not NULL.
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*------------------------------------------------------------------------*/
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void
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usb_pause_mtx(struct mtx *mtx, int _ticks)
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{
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if (mtx != NULL)
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mtx_unlock(mtx);
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if (cold) {
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/* convert to milliseconds */
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_ticks = (_ticks * 1000) / hz;
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/* convert to microseconds, rounded up */
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_ticks = (_ticks + 1) * 1000;
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DELAY(_ticks);
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} else {
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/*
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* Add one to the number of ticks so that we don't return
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* too early!
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*/
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_ticks++;
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if (pause("USBWAIT", _ticks)) {
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/* ignore */
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}
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}
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if (mtx != NULL)
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mtx_lock(mtx);
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}
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/*------------------------------------------------------------------------*
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* usb_printbcd
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*
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* This function will print the version number "bcd" to the string
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* pointed to by "p" having a maximum length of "p_len" bytes
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* including the terminating zero.
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*------------------------------------------------------------------------*/
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void
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usb_printbcd(char *p, uint16_t p_len, uint16_t bcd)
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{
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if (snprintf(p, p_len, "%x.%02x", bcd >> 8, bcd & 0xff)) {
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/* ignore any errors */
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}
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}
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/*------------------------------------------------------------------------*
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* usb_trim_spaces
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*
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* This function removes spaces at the beginning and the end of the string
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* pointed to by the "p" argument.
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*------------------------------------------------------------------------*/
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void
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usb_trim_spaces(char *p)
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{
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char *q;
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char *e;
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if (p == NULL)
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return;
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q = e = p;
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while (*q == ' ') /* skip leading spaces */
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q++;
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while ((*p = *q++)) /* copy string */
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if (*p++ != ' ') /* remember last non-space */
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e = p;
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*e = 0; /* kill trailing spaces */
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}
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/*------------------------------------------------------------------------*
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* usb_make_str_desc - convert an ASCII string into a UNICODE string
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*------------------------------------------------------------------------*/
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uint8_t
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usb_make_str_desc(void *ptr, uint16_t max_len, const char *s)
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{
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struct usb_string_descriptor *p = ptr;
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uint8_t totlen;
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int j;
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if (max_len < 2) {
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/* invalid length */
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return (0);
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}
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max_len = ((max_len / 2) - 1);
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j = strlen(s);
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if (j < 0) {
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j = 0;
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}
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if (j > 126) {
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j = 126;
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}
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if (max_len > j) {
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max_len = j;
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}
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totlen = (max_len + 1) * 2;
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p->bLength = totlen;
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p->bDescriptorType = UDESC_STRING;
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while (max_len--) {
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USETW2(p->bString[max_len], 0, s[max_len]);
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}
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return (totlen);
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}
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