/* $FreeBSD$ */ /*- * 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 <sys/stdint.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/condvar.h> #include <sys/sysctl.h> #include <sys/unistd.h> #include <sys/callout.h> #include <sys/malloc.h> #include <sys/caps.h> #include <bus/u4b/usb.h> #include <bus/u4b/usbdi.h> #include <bus/u4b/usbdi_util.h> #include <bus/u4b/usb_core.h> #include <bus/u4b/usb_util.h> #include <bus/u4b/usb_process.h> #include <bus/u4b/usb_device.h> #include <bus/u4b/usb_request.h> #include <bus/u4b/usb_busdma.h> #include <bus/u4b/usb_controller.h> #include <bus/u4b/usb_bus.h> /*------------------------------------------------------------------------* * 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_enum_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_enum_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 lock *lock, int timo) { /* * 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! */ if (lock != NULL) { lksleep(&usb_pause_mtx, lock, 0, "USBSLP", timo + 1); } else { KKASSERT(timo + 1 > 0); tsleep(&usb_pause_mtx, 0, "USBSLP", timo + 1); } } /*------------------------------------------------------------------------* * usb_pause_ls - factored out code * * This function will delay the code by the passed number of system * ticks. The passed lock "lock", will be dropped while waiting, * if * "lock" is different from NULL, "slz" will be left. * * This function is here because sometimes we have two subsystems with * different locking primitives (lockmgr locks, lwkt serializers) involved. *------------------------------------------------------------------------*/ void usb_pause_ls(struct lock *lock, struct lwkt_serialize *slz, int _ticks) { int locked = 0; locked = (lock != NULL) && lockowned(lock); tsleep_interlock(&usb_pause_ls, 0); lwkt_serialize_exit(slz); if(locked) lockmgr(lock, LK_RELEASE); tsleep(&usb_pause_ls, PINTERLOCKED, "USBSL2", _ticks); if(locked) lockmgr(lock, LK_EXCLUSIVE); lwkt_serialize_enter(slz); } /*------------------------------------------------------------------------* * 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 (ksnprintf(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); }
