1/* $NetBSD: onewirevar.h,v 1.4 2007/09/05 15:24:07 xtraeme Exp $ */ 2/* $OpenBSD: onewirevar.h,v 1.1 2006/03/04 16:27:03 grange Exp $ */ 3 4/* 5 * Copyright (c) 2006 Alexander Yurchenko <grange@openbsd.org> 6 * 7 * Permission to use, copy, modify, and distribute this software for any 8 * purpose with or without fee is hereby granted, provided that the above 9 * copyright notice and this permission notice appear in all copies. 10 * 11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18 */ 19 20#ifndef _DEV_ONEWIRE_ONEWIREVAR_H_ 21#define _DEV_ONEWIRE_ONEWIREVAR_H_ 22 23/* 24 * 1-Wire bus interface. 25 */ 26 27/* Bus master interface */ 28struct onewire_bus { 29 void * bus_cookie; 30 31 int (*bus_reset)(void *); 32 int (*bus_bit)(void *, int); 33 int (*bus_read_byte)(void *); 34 void (*bus_write_byte)(void *, int); 35 int (*bus_triplet)(void *, int); 36}; 37 38/* Bus methods */ 39void onewire_lock(void *); 40void onewire_unlock(void *); 41int onewire_reset(void *); 42int onewire_bit(void *, int); 43int onewire_read_byte(void *); 44void onewire_write_byte(void *, int); 45int onewire_triplet(void *, int); 46void onewire_read_block(void *, void *, int); 47void onewire_write_block(void *, const void *, int); 48void onewire_matchrom(void *, u_int64_t); 49 50/* Bus attachment */ 51struct onewirebus_attach_args { 52 struct onewire_bus * oba_bus; 53}; 54 55int onewirebus_print(void *, const char *); 56 57/* Device attachment */ 58struct onewire_attach_args { 59 void * oa_onewire; 60 u_int64_t oa_rom; 61}; 62 63/* Family matching */ 64struct onewire_matchfam { 65 int om_type; 66}; 67 68/* Miscellaneous routines */ 69int onewire_crc(const void *, int); 70const char * onewire_famname(int); 71int onewire_matchbyfam(struct onewire_attach_args *, 72 const struct onewire_matchfam *, int); 73 74/* Bus bit-banging */ 75struct onewire_bbops { 76 void (*bb_rx)(void *); 77 void (*bb_tx)(void *); 78 int (*bb_get)(void *); 79 void (*bb_set)(void *, int); 80}; 81 82int onewire_bb_reset(const struct onewire_bbops *, void *); 83int onewire_bb_bit(const struct onewire_bbops *, void *, int); 84 85#endif /* !_DEV_ONEWIRE_ONEWIREVAR_H_ */ 86