1#- 2# Copyright (c) 2015 M. Warner Losh <imp@freebsd.org> 3# All rights reserved. 4# 5# Redistribution and use in source and binary forms, with or without 6# modification, are permitted provided that the following conditions 7# are met: 8# 1. Redistributions of source code must retain the above copyright 9# notice, this list of conditions and the following disclaimer. 10# 2. Redistributions in binary form must reproduce the above copyright 11# notice, this list of conditions and the following disclaimer in the 12# documentation and/or other materials provided with the distribution. 13# 14# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24# SUCH DAMAGE. 25# 26# $FreeBSD$ 27# 28 29#include <sys/bus.h> 30#include <dev/ow/ow.h> 31 32INTERFACE own; 33 34# 35# Dallas Semiconductor 1-Wire bus network and transport layer (own) 36# 37# See Maxim Application Note AN937: Book of iButton Standards for the 38# 1-Wire protocol specification. 39# http://pdfserv.maximintegrated.com/en/an/AN937.pdf 40# 41# Note: 1-Wire is a registered trademark of Maxim Integrated Products, Inc. 42# 43 44# 45# Send a command up the stack. 46# 47METHOD int send_command { 48 device_t ndev; /* Network (bus) level device */ 49 device_t pdev; /* Device to send command for */ 50 struct ow_cmd *cmd; /* Pointer to filled in command */ 51}; 52 53# 54# Grab exclusive use of the bus (advisory) 55# 56METHOD int acquire_bus { 57 device_t ndev; 58 device_t pdev; 59 int how; 60}; 61 62# 63# Release exclusive use of the bus (advisory) 64# 65METHOD void release_bus { 66 device_t ndev; 67 device_t pdev; 68}; 69 70# 71# Compute a CRC for a given range of bytes 72# 73METHOD uint8_t crc { 74 device_t ndev; 75 device_t pdev; 76 uint8_t *buffer; 77 size_t len; 78}; 79