1 /* $FreeBSD$ */ 2 /* 3 * SPDX-License-Identifier: BSD-2-Clause 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 #ifndef USB_GLOBAL_INCLUDE_FILE 33 #include <sys/stdint.h> 34 #include <sys/endian.h> 35 #endif 36 37 /* 38 * Declare the basic USB record types. USB records have an alignment 39 * of 1 byte and are always packed. 40 */ 41 typedef uint8_t uByte; 42 typedef uint8_t uWord[2]; 43 typedef uint8_t uDWord[4]; 44 typedef uint8_t uQWord[8]; 45 46 /* 47 * Define a set of macros that can get and set data independent of 48 * CPU endianness and CPU alignment requirements: 49 */ 50 #define UGETB(w) \ 51 ((w)[0]) 52 53 #define UGETW(w) \ 54 ((w)[0] | \ 55 (((uint16_t)((w)[1])) << 8)) 56 57 #define UGETDW(w) \ 58 ((w)[0] | \ 59 (((uint16_t)((w)[1])) << 8) | \ 60 (((uint32_t)((w)[2])) << 16) | \ 61 (((uint32_t)((w)[3])) << 24)) 62 63 #define UGETQW(w) \ 64 ((w)[0] | \ 65 (((uint16_t)((w)[1])) << 8) | \ 66 (((uint32_t)((w)[2])) << 16) | \ 67 (((uint32_t)((w)[3])) << 24) | \ 68 (((uint64_t)((w)[4])) << 32) | \ 69 (((uint64_t)((w)[5])) << 40) | \ 70 (((uint64_t)((w)[6])) << 48) | \ 71 (((uint64_t)((w)[7])) << 56)) 72 73 #define USETB(w,v) do { \ 74 (w)[0] = (uint8_t)(v); \ 75 } while (0) 76 77 #define USETW(w,v) do { \ 78 (w)[0] = (uint8_t)(v); \ 79 (w)[1] = (uint8_t)((v) >> 8); \ 80 } while (0) 81 82 #define USETDW(w,v) do { \ 83 (w)[0] = (uint8_t)(v); \ 84 (w)[1] = (uint8_t)((v) >> 8); \ 85 (w)[2] = (uint8_t)((v) >> 16); \ 86 (w)[3] = (uint8_t)((v) >> 24); \ 87 } while (0) 88 89 #define USETQW(w,v) do { \ 90 (w)[0] = (uint8_t)(v); \ 91 (w)[1] = (uint8_t)((v) >> 8); \ 92 (w)[2] = (uint8_t)((v) >> 16); \ 93 (w)[3] = (uint8_t)((v) >> 24); \ 94 (w)[4] = (uint8_t)((v) >> 32); \ 95 (w)[5] = (uint8_t)((v) >> 40); \ 96 (w)[6] = (uint8_t)((v) >> 48); \ 97 (w)[7] = (uint8_t)((v) >> 56); \ 98 } while (0) 99 100 #define USETW2(w,b1,b0) do { \ 101 (w)[0] = (uint8_t)(b0); \ 102 (w)[1] = (uint8_t)(b1); \ 103 } while (0) 104 105 #define USETW4(w,b3,b2,b1,b0) do { \ 106 (w)[0] = (uint8_t)(b0); \ 107 (w)[1] = (uint8_t)(b1); \ 108 (w)[2] = (uint8_t)(b2); \ 109 (w)[3] = (uint8_t)(b3); \ 110 } while (0) 111 112 #define USETW8(w,b7,b6,b5,b4,b3,b2,b1,b0) do { \ 113 (w)[0] = (uint8_t)(b0); \ 114 (w)[1] = (uint8_t)(b1); \ 115 (w)[2] = (uint8_t)(b2); \ 116 (w)[3] = (uint8_t)(b3); \ 117 (w)[4] = (uint8_t)(b4); \ 118 (w)[5] = (uint8_t)(b5); \ 119 (w)[6] = (uint8_t)(b6); \ 120 (w)[7] = (uint8_t)(b7); \ 121 } while (0) 122 123 #endif /* _USB_ENDIAN_H_ */ 124