/* $OpenBSD: onewirevar.h,v 1.4 2006/10/08 21:12:51 grange Exp $ */ /* * Copyright (c) 2006 Alexander Yurchenko <grange@openbsd.org> * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #ifndef _DEV_ONEWIRE_ONEWIREVAR_H_ #define _DEV_ONEWIRE_ONEWIREVAR_H_ /* * 1-Wire bus interface. */ /* Bus master interface */ struct onewire_bus { void * bus_cookie; int (*bus_reset)(void *); int (*bus_bit)(void *, int); int (*bus_read_byte)(void *); void (*bus_write_byte)(void *, int); void (*bus_read_block)(void *, void *, int); void (*bus_write_block)(void *, const void *, int); int (*bus_triplet)(void *, int); void (*bus_matchrom)(void *, u_int64_t); int (*bus_search)(void *, u_int64_t *, int, u_int64_t); }; /* Bus methods */ int onewire_lock(void *, int); void onewire_unlock(void *); int onewire_reset(void *); int onewire_bit(void *, int); int onewire_read_byte(void *); void onewire_write_byte(void *, int); void onewire_read_block(void *, void *, int); void onewire_write_block(void *, const void *, int); int onewire_triplet(void *, int); void onewire_matchrom(void *, u_int64_t); int onewire_search(void *, u_int64_t *, int, u_int64_t); #define ONEWIRE_NOWAIT 0x0001 /* Bus attachment */ struct onewirebus_attach_args { struct onewire_bus * oba_bus; }; int onewirebus_print(void *, const char *); /* Device attachment */ struct onewire_attach_args { void * oa_onewire; u_int64_t oa_rom; }; /* Family matching */ struct onewire_matchfam { int om_type; }; /* Miscellaneous routines */ int onewire_crc(const void *, int); const char * onewire_famname(int); int onewire_matchbyfam(struct onewire_attach_args *, const struct onewire_matchfam *, int); /* Bus bit-banging */ struct onewire_bbops { void (*bb_rx)(void *); void (*bb_tx)(void *); int (*bb_get)(void *); void (*bb_set)(void *, int); }; int onewire_bb_reset(const struct onewire_bbops *, void *); int onewire_bb_bit(const struct onewire_bbops *, void *, int); #endif /* !_DEV_ONEWIRE_ONEWIREVAR_H_ */