| 1 | /* $NetBSD: onewirevar.h,v 1.5 2007/09/05 15:39:22 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 */ |
| 28 | struct 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 */ |
| 39 | void onewire_lock(void *); |
| 40 | void onewire_unlock(void *); |
| 41 | int onewire_reset(void *); |
| 42 | int onewire_bit(void *, int); |
| 43 | int onewire_read_byte(void *); |
| 44 | void onewire_write_byte(void *, int); |
| 45 | int onewire_triplet(void *, int); |
| 46 | void onewire_read_block(void *, void *, int); |
| 47 | void onewire_write_block(void *, const void *, int); |
| 48 | void onewire_matchrom(void *, u_int64_t); |
| 49 | |
| 50 | /* Bus attachment */ |
| 51 | struct onewirebus_attach_args { |
| 52 | struct onewire_bus * oba_bus; |
| 53 | }; |
| 54 | |
| 55 | int onewirebus_print(void *, const char *); |
| 56 | |
| 57 | /* Device attachment */ |
| 58 | struct onewire_attach_args { |
| 59 | void * oa_onewire; |
| 60 | u_int64_t oa_rom; |
| 61 | }; |
| 62 | |
| 63 | /* Family matching */ |
| 64 | struct onewire_matchfam { |
| 65 | int om_type; |
| 66 | }; |
| 67 | |
| 68 | /* Miscellaneous routines */ |
| 69 | int onewire_crc(const void *, int); |
| 70 | const char * onewire_famname(int); |
| 71 | int onewire_matchbyfam(struct onewire_attach_args *, |
| 72 | const struct onewire_matchfam *, int); |
| 73 | |
| 74 | /* Bus bit-banging */ |
| 75 | struct 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 | |
| 82 | int onewire_bb_reset(const struct onewire_bbops *, void *); |
| 83 | int onewire_bb_bit(const struct onewire_bbops *, void *, int); |
| 84 | |
| 85 | #endif /* !_DEV_ONEWIRE_ONEWIREVAR_H_ */ |
| 86 | |