onewirevar.h revision 1.1
1/* $OpenBSD: onewirevar.h,v 1.1 2006/03/04 16:27:03 grange 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_ONEWIREVAR_H_ 20#define _DEV_ONEWIRE_ONEWIREVAR_H_ 21 22/* 23 * 1-Wire bus interface. 24 */ 25 26/* Bus master interface */ 27struct onewire_bus { 28 void * bus_cookie; 29 30 int (*bus_reset)(void *); 31 int (*bus_bit)(void *, int); 32 int (*bus_read_byte)(void *); 33 void (*bus_write_byte)(void *, int); 34 int (*bus_triplet)(void *, int); 35}; 36 37/* Bus methods */ 38int onewire_lock(void *, int); 39void onewire_unlock(void *); 40int onewire_reset(void *); 41int onewire_bit(void *, int); 42int onewire_read_byte(void *); 43void onewire_write_byte(void *, int); 44int onewire_triplet(void *, int); 45void onewire_read_block(void *, void *, int); 46void onewire_write_block(void *, const void *, int); 47void onewire_matchrom(void *, u_int64_t); 48 49#define ONEWIRE_NOWAIT 0x0001 50 51/* Bus attachment */ 52struct onewirebus_attach_args { 53 struct onewire_bus * oba_bus; 54}; 55 56int onewirebus_print(void *, const char *); 57 58/* Device attachment */ 59struct onewire_attach_args { 60 void * oa_onewire; 61 u_int64_t oa_rom; 62}; 63 64/* Family matching */ 65struct onewire_matchfam { 66 int om_type; 67}; 68 69/* Miscellaneous routines */ 70int onewire_crc(const void *, int); 71const char * onewire_famname(int); 72int onewire_matchbyfam(struct onewire_attach_args *, 73 const struct onewire_matchfam *, int); 74 75/* Bus bit-banging */ 76struct onewire_bbops { 77 void (*bb_rx)(void *); 78 void (*bb_tx)(void *); 79 int (*bb_get)(void *); 80 void (*bb_set)(void *, int); 81}; 82 83int onewire_bb_reset(const struct onewire_bbops *, void *); 84int onewire_bb_bit(const struct onewire_bbops *, void *, int); 85 86#endif /* !_DEV_ONEWIRE_ONEWIREVAR_H_ */ 87