1 /* $OpenBSD: onewirereg.h,v 1.2 2009/06/02 18:19:47 deraadt Exp $ */ 2 3 /* 4 * Copyright (c) 2006 Alexander Yurchenko <grange@openbsd.org> 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 #ifndef _DEV_ONEWIRE_ONEWIREREG_H_ 20 #define _DEV_ONEWIRE_ONEWIREREG_H_ 21 22 /* 23 * 1-Wire bus protocol definitions. 24 */ 25 26 /* 27 * 64-bit ROM section. 28 */ 29 30 /* Family code */ 31 #define ONEWIRE_ROM_FAMILY(x) ((u_char)(x) & 0xff) 32 #define ONEWIRE_ROM_FAMILY_TYPE(x) ((u_char)(x) & 0x7f) 33 #define ONEWIRE_ROM_FAMILY_CUSTOM(x) ((u_char)((x) >> 7) & 0x1) 34 35 /* Serial number */ 36 #define ONEWIRE_ROM_SN(x) (((x) >> 8) & 0xffffffffffffULL) 37 38 /* CRC */ 39 #define ONEWIRE_ROM_CRC(x) (((x) >> 56) & 0xff) 40 41 /* 42 * Command set. 43 */ 44 45 /* ROM commands */ 46 #define ONEWIRE_CMD_READ_ROM 0x33 47 #define ONEWIRE_CMD_SKIP_ROM 0xcc 48 #define ONEWIRE_CMD_MATCH_ROM 0x55 49 #define ONEWIRE_CMD_SEARCH_ROM 0xf0 50 #define ONEWIRE_CMD_OVERDRIVE_SKIP_ROM 0x3c 51 #define ONEWIRE_CMD_OVERDRIVE_MATCH_ROM 0x69 52 53 /* Scratchpad commands */ 54 #define ONEWIRE_CMD_READ_SCRATCHPAD 0xaa 55 #define ONEWIRE_CMD_WRITE_SCRATCHPAD 0x0f 56 #define ONEWIRE_CMD_COPY_SCRATCHPAD 0x55 57 58 /* Memory commands */ 59 #define ONEWIRE_CMD_READ_MEMORY 0xf0 60 #define ONEWIRE_CMD_WRITE_MEMORY 0x0f 61 #define ONEWIRE_CMD_EXT_READ_MEMORY 0xa5 62 63 /* Password commands */ 64 #define ONEWIRE_CMD_READ_SUBKEY 0x66 65 #define ONEWIRE_CMD_WRITE_SUBKEY 0x99 66 #define ONEWIRE_CMD_WRITE_PASSWORD 0x5a 67 68 /* Status commands */ 69 #define ONEWIRE_CMD_READ_STATUS 0xaa 70 #define ONEWIRE_CMD_WRITE_STATUS 0x55 71 72 #endif /* !_DEV_ONEWIRE_ONEWIREREG_H_ */ 73