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sys/dev/ow/own_if.m
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#- | |||||
# Copyright (c) 2015 M. Warner Losh <imp@freebsd.org> | |||||
# All rights reserved. | |||||
# | |||||
# Redistribution and use in source and binary forms, with or without | |||||
# modification, are permitted provided that the following conditions | |||||
# are met: | |||||
# 1. Redistributions of source code must retain the above copyright | |||||
# notice, this list of conditions and the following disclaimer. | |||||
# 2. Redistributions in binary form must reproduce the above copyright | |||||
# notice, this list of conditions and the following disclaimer in the | |||||
# documentation and/or other materials provided with the distribution. | |||||
# | |||||
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND | |||||
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |||||
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |||||
# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |||||
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |||||
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |||||
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |||||
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |||||
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |||||
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |||||
# SUCH DAMAGE. | |||||
# | |||||
# $FreeBSD$ | |||||
# | |||||
#include <sys/bus.h> | |||||
#include <dev/ow/ow.h> | |||||
INTERFACE own; | |||||
# | |||||
# Dallas Semiconductor 1-Wire bus network and transport layer (own) | |||||
# | |||||
# See Maxim Application Note AN937: Book of iButton Standards for the | |||||
# 1-Wire protocol specification. | |||||
# http://pdfserv.maximintegrated.com/en/an/AN937.pdf | |||||
# | |||||
# Note: 1-Wire is a registered trademark of Maxim Integrated Products, Inc. | |||||
# | |||||
# | |||||
# Send a command up the stack. | |||||
# | |||||
METHOD int send_command { | |||||
device_t ndev; /* Network (bus) level device */ | |||||
device_t pdev; /* Device to send command for */ | |||||
struct ow_cmd *cmd; /* Pointer to filled in command */ | |||||
}; | |||||
# | |||||
# Grab exclusive use of the bus (advisory) | |||||
# | |||||
METHOD int acquire_bus { | |||||
device_t ndev; | |||||
device_t pdev; | |||||
int how; | |||||
}; | |||||
# | |||||
# Release exclusive use of the bus (advisory) | |||||
# | |||||
METHOD void release_bus { | |||||
device_t ndev; | |||||
device_t pdev; | |||||
}; | |||||
# | |||||
# Compute a CRC for a given range of bytes | |||||
# | |||||
METHOD uint8_t crc { | |||||
device_t ndev; | |||||
device_t pdev; | |||||
uint8_t *buffer; | |||||
size_t len; | |||||
}; |