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