onewirevar.h revision 1.2
1/* $OpenBSD: onewirevar.h,v 1.2 2006/09/29 19:38:52 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 void (*bus_read_block)(void *, void *, int); 35 void (*bus_write_block)(void *, const void *, int); 36 int (*bus_triplet)(void *, int); 37}; 38 39/* Bus methods */ 40int onewire_lock(void *, int); 41void onewire_unlock(void *); 42int onewire_reset(void *); 43int onewire_bit(void *, int); 44int onewire_read_byte(void *); 45void onewire_write_byte(void *, int); 46void onewire_read_block(void *, void *, int); 47void onewire_write_block(void *, const void *, int); 48int onewire_triplet(void *, int); 49void onewire_matchrom(void *, u_int64_t); 50 51#define ONEWIRE_NOWAIT 0x0001 52 53/* Bus attachment */ 54struct onewirebus_attach_args { 55 struct onewire_bus * oba_bus; 56}; 57 58int onewirebus_print(void *, const char *); 59 60/* Device attachment */ 61struct onewire_attach_args { 62 void * oa_onewire; 63 u_int64_t oa_rom; 64}; 65 66/* Family matching */ 67struct onewire_matchfam { 68 int om_type; 69}; 70 71/* Miscellaneous routines */ 72int onewire_crc(const void *, int); 73const char * onewire_famname(int); 74int onewire_matchbyfam(struct onewire_attach_args *, 75 const struct onewire_matchfam *, int); 76 77/* Bus bit-banging */ 78struct onewire_bbops { 79 void (*bb_rx)(void *); 80 void (*bb_tx)(void *); 81 int (*bb_get)(void *); 82 void (*bb_set)(void *, int); 83}; 84 85int onewire_bb_reset(const struct onewire_bbops *, void *); 86int onewire_bb_bit(const struct onewire_bbops *, void *, int); 87 88#endif /* !_DEV_ONEWIRE_ONEWIREVAR_H_ */ 89