1/* $FreeBSD$ */ 2/* 3 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 4 * 5 * Copyright (c) 2008 Hans Petter Selasky. 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 AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29#ifndef _USB_ENDIAN_H_ 30#define _USB_ENDIAN_H_ 31 32/* 33 * Declare the basic USB record types. USB records have an alignment 34 * of 1 byte and are always packed. 35 */ 36typedef uint8_t uByte; 37typedef uint8_t uWord[2]; 38typedef uint8_t uDWord[4]; 39typedef uint8_t uQWord[8]; 40 41/* 42 * Define a set of macros that can get and set data independent of 43 * CPU endianness and CPU alignment requirements: 44 */ 45#define UGETB(w) \ 46 ((w)[0]) 47 48#define UGETW(w) \ 49 ((w)[0] | \ 50 (((uint16_t)((w)[1])) << 8)) 51 52#define UGETDW(w) \ 53 ((w)[0] | \ 54 (((uint16_t)((w)[1])) << 8) | \ 55 (((uint32_t)((w)[2])) << 16) | \ 56 (((uint32_t)((w)[3])) << 24)) 57 58#define UGETQW(w) \ 59 ((w)[0] | \ 60 (((uint16_t)((w)[1])) << 8) | \ 61 (((uint32_t)((w)[2])) << 16) | \ 62 (((uint32_t)((w)[3])) << 24) | \ 63 (((uint64_t)((w)[4])) << 32) | \ 64 (((uint64_t)((w)[5])) << 40) | \ 65 (((uint64_t)((w)[6])) << 48) | \ 66 (((uint64_t)((w)[7])) << 56)) 67 68#define USETB(w,v) do { \ 69 (w)[0] = (uint8_t)(v); \ 70} while (0) 71 72#define USETW(w,v) do { \ 73 (w)[0] = (uint8_t)(v); \ 74 (w)[1] = (uint8_t)((v) >> 8); \ 75} while (0) 76 77#define USETDW(w,v) do { \ 78 (w)[0] = (uint8_t)(v); \ 79 (w)[1] = (uint8_t)((v) >> 8); \ 80 (w)[2] = (uint8_t)((v) >> 16); \ 81 (w)[3] = (uint8_t)((v) >> 24); \ 82} while (0) 83 84#define USETQW(w,v) do { \ 85 (w)[0] = (uint8_t)(v); \ 86 (w)[1] = (uint8_t)((v) >> 8); \ 87 (w)[2] = (uint8_t)((v) >> 16); \ 88 (w)[3] = (uint8_t)((v) >> 24); \ 89 (w)[4] = (uint8_t)((v) >> 32); \ 90 (w)[5] = (uint8_t)((v) >> 40); \ 91 (w)[6] = (uint8_t)((v) >> 48); \ 92 (w)[7] = (uint8_t)((v) >> 56); \ 93} while (0) 94 95#define USETW2(w,b1,b0) do { \ 96 (w)[0] = (uint8_t)(b0); \ 97 (w)[1] = (uint8_t)(b1); \ 98} while (0) 99 100#define USETW4(w,b3,b2,b1,b0) do { \ 101 (w)[0] = (uint8_t)(b0); \ 102 (w)[1] = (uint8_t)(b1); \ 103 (w)[2] = (uint8_t)(b2); \ 104 (w)[3] = (uint8_t)(b3); \ 105} while (0) 106 107#define USETW8(w,b7,b6,b5,b4,b3,b2,b1,b0) do { \ 108 (w)[0] = (uint8_t)(b0); \ 109 (w)[1] = (uint8_t)(b1); \ 110 (w)[2] = (uint8_t)(b2); \ 111 (w)[3] = (uint8_t)(b3); \ 112 (w)[4] = (uint8_t)(b4); \ 113 (w)[5] = (uint8_t)(b5); \ 114 (w)[6] = (uint8_t)(b6); \ 115 (w)[7] = (uint8_t)(b7); \ 116} while (0) 117 118#endif /* _USB_ENDIAN_H_ */ 119