/* $FreeBSD$ */ /*- * 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. */ #include #include #include #include #include #include #include #include #include #include #include /* function prototypes */ #if (USB_HAVE_CONDVAR == 0) static int usb2_msleep(void *chan, struct mtx *mtx, int priority, const char *wmesg, int timo); #endif /*------------------------------------------------------------------------* * device_delete_all_children - delete all children of a device *------------------------------------------------------------------------*/ #ifndef device_delete_all_children int device_delete_all_children(device_t dev) { device_t *devlist; int devcount; int error; error = device_get_children(dev, &devlist, &devcount); if (error == 0) { while (devcount-- > 0) { error = device_delete_child(dev, devlist[devcount]); if (error) { break; } } free(devlist, M_TEMP); } return (error); } #endif /*------------------------------------------------------------------------* * device_set_usb2_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_usb2_desc(device_t dev) { struct usb2_attach_arg *uaa; struct usb2_device *udev; struct usb2_interface *iface; char *temp_p; usb2_error_t err; 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; } temp_p = (char *)udev->bus->scratch[0].data; if (!err) { /* try to get the interface string ! */ err = usb2_req_get_string_any (udev, NULL, temp_p, sizeof(udev->bus->scratch), iface->idesc->iInterface); } if (err) { /* use default description */ usb2_devinfo(udev, temp_p, sizeof(udev->bus->scratch)); } device_set_desc_copy(dev, temp_p); device_printf(dev, "<%s> on %s\n", temp_p, device_get_nameunit(udev->bus->bdev)); } /*------------------------------------------------------------------------* * usb2_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 not NULL. *------------------------------------------------------------------------*/ void usb2_pause_mtx(struct mtx *mtx, int _ticks) { if (mtx != NULL) mtx_unlock(mtx); if (cold) { /* convert to milliseconds */ _ticks = (_ticks * 1000) / hz; /* convert to microseconds, rounded up */ _ticks = (_ticks + 1) * 1000; DELAY(_ticks); } else { /* * Add one to the number of ticks so that we don't return * too early! */ _ticks++; if (pause("USBWAIT", _ticks)) { /* ignore */ } } if (mtx != NULL) mtx_lock(mtx); } /*------------------------------------------------------------------------* * usb2_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 usb2_printBCD(char *p, uint16_t p_len, uint16_t bcd) { if (snprintf(p, p_len, "%x.%02x", bcd >> 8, bcd & 0xff)) { /* ignore any errors */ } } /*------------------------------------------------------------------------* * usb2_trim_spaces * * This function removes spaces at the beginning and the end of the string * pointed to by the "p" argument. *------------------------------------------------------------------------*/ void usb2_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 */ } /*------------------------------------------------------------------------* * usb2_make_str_desc - convert an ASCII string into a UNICODE string *------------------------------------------------------------------------*/ uint8_t usb2_make_str_desc(void *ptr, uint16_t max_len, const char *s) { struct usb2_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); } #if (USB_HAVE_CONDVAR == 0) /*------------------------------------------------------------------------* * usb2_cv_init - wrapper function *------------------------------------------------------------------------*/ void usb2_cv_init(struct cv *cv, const char *desc) { cv_init(cv, desc); } /*------------------------------------------------------------------------* * usb2_cv_destroy - wrapper function *------------------------------------------------------------------------*/ void usb2_cv_destroy(struct cv *cv) { cv_destroy(cv); } /*------------------------------------------------------------------------* * usb2_cv_wait - wrapper function *------------------------------------------------------------------------*/ void usb2_cv_wait(struct cv *cv, struct mtx *mtx) { int err; err = usb2_msleep(cv, mtx, 0, cv_wmesg(cv), 0); } /*------------------------------------------------------------------------* * usb2_cv_wait_sig - wrapper function *------------------------------------------------------------------------*/ int usb2_cv_wait_sig(struct cv *cv, struct mtx *mtx) { int err; err = usb2_msleep(cv, mtx, PCATCH, cv_wmesg(cv), 0); return (err); } /*------------------------------------------------------------------------* * usb2_cv_timedwait - wrapper function *------------------------------------------------------------------------*/ int usb2_cv_timedwait(struct cv *cv, struct mtx *mtx, int timo) { int err; if (timo == 0) timo = 1; /* zero means no timeout */ err = usb2_msleep(cv, mtx, 0, cv_wmesg(cv), timo); return (err); } /*------------------------------------------------------------------------* * usb2_cv_signal - wrapper function *------------------------------------------------------------------------*/ void usb2_cv_signal(struct cv *cv) { wakeup_one(cv); } /*------------------------------------------------------------------------* * usb2_cv_broadcast - wrapper function *------------------------------------------------------------------------*/ void usb2_cv_broadcast(struct cv *cv) { wakeup(cv); } /*------------------------------------------------------------------------* * usb2_msleep - wrapper function *------------------------------------------------------------------------*/ static int usb2_msleep(void *chan, struct mtx *mtx, int priority, const char *wmesg, int timo) { int err; if (mtx == &Giant) { err = tsleep(chan, priority, wmesg, timo); } else { #ifdef mtx_sleep err = mtx_sleep(chan, mtx, priority, wmesg, timo); #else err = msleep(chan, mtx, priority, wmesg, timo); #endif } return (err); } #endif