FreeBSD/Linux Kernel Cross Reference
sys/dev/ow/own_if.m

     #-
     # 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;
    };

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