FreeBSD/Linux Kernel Cross Reference
sys/xen/xenbus/xenbusb_if.m

     #-
     # Copyright (c) 2010 Spectra Logic Corporation
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    # $FreeBSD: releng/8.2/sys/xen/xenbus/xenbusb_if.m 215788 2010-11-24 01:03:03Z gibbs $
    #
    
    #include <sys/bus.h>
    
    HEADER {
    struct xenbus_device_ivars;
    }
    
    INTERFACE xenbusb;
    
    /**
     * \brief Enumerate all devices of the given type on this bus.
     *
     * \param _dev  NewBus device_t for this XenBus (front/back) bus instance.
     * \param _type String indicating the device sub-tree (e.g. "vfb", "vif")
     *              to enumerate. 
     *
     * \return  On success, 0. Otherwise an errno value indicating the
     *          type of failure.
     *
     * Devices that are found should be entered into the NewBus hierarchy via
     * xenbusb_add_device().  xenbusb_add_device() ignores duplicate detects
     * and ignores duplicate devices, so it can be called unconditionally
     * for any device found in the XenStore.
     */
    METHOD int enumerate_type {
            device_t _dev;
            const char *_type;
    };
    
    /**
     * \brief Determine and store the XenStore path for the other end of
     *        a split device whose local end is represented by ivars.
     *
     * If successful, the xd_otherend_path field of the child's instance
     * variables must be updated.
     *
     * \param _dev    NewBus device_t for this XenBus (front/back) bus instance.
     * \param _ivars  Instance variables from the XenBus child device for
     *                which to perform this function.
     *
     * \return  On success, 0. Otherwise an errno value indicating the
     *          type of failure.
     */
    METHOD int get_otherend_node {
            device_t _dev;
            struct xenbus_device_ivars *_ivars;
    }

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