1/* $NetBSD$ */ 2 3/* 4 * Copyright (c) 2008 5 * Matthias Drochner. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 * 27 */ 28 29#include <dev/usb/usb.h> 30#include <dev/usb/usbroothub_subr.h> 31 32/* helper functions for USB root hub emulation */ 33 34int 35usb_makestrdesc(usb_string_descriptor_t *p, int l, const char *s) 36{ 37 int i; 38 39 if (l == 0) 40 return (0); 41 p->bLength = 2 * strlen(s) + 2; 42 if (l == 1) 43 return (1); 44 p->bDescriptorType = UDESC_STRING; 45 l -= 2; 46 /* poor man's utf-16le conversion */ 47 for (i = 0; s[i] && l > 1; i++, l -= 2) 48 USETW2(p->bString[i], 0, s[i]); 49 return (2 * i + 2); 50} 51 52int 53usb_makelangtbl(usb_string_descriptor_t *p, int l) 54{ 55 56 if (l == 0) 57 return (0); 58 p->bLength = 4; 59 if (l == 1) 60 return (1); 61 p->bDescriptorType = UDESC_STRING; 62 if (l < 4) 63 return (2); 64 USETW(p->bString[0], 0x0409); /* english/US */ 65 return (4); 66} 67