FreeBSD/Linux Kernel Cross Reference
sys/dev/mmc/mmcbus_if.m

     #-
     # Copyright (c) 2006 M. Warner Losh
     # 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.
    #
    # Portions of this software may have been developed with reference to
    # the SD Simplified Specification.  The following disclaimer may apply:
    #
    # The following conditions apply to the release of the simplified
    # specification ("Simplified Specification") by the SD Card Association and
    # the SD Group. The Simplified Specification is a subset of the complete SD
    # Specification which is owned by the SD Card Association and the SD
    # Group. This Simplified Specification is provided on a non-confidential
    # basis subject to the disclaimers below. Any implementation of the
    # Simplified Specification may require a license from the SD Card
    # Association, SD Group, SD-3C LLC or other third parties.
    #
    # Disclaimers:
    #
    # The information contained in the Simplified Specification is presented only
    # as a standard specification for SD Cards and SD Host/Ancillary products and
    # is provided "AS-IS" without any representations or warranties of any
    # kind. No responsibility is assumed by the SD Group, SD-3C LLC or the SD
    # Card Association for any damages, any infringements of patents or other
    # right of the SD Group, SD-3C LLC, the SD Card Association or any third
    # parties, which may result from its use. No license is granted by
    # implication, estoppel or otherwise under any patent or other rights of the
    # SD Group, SD-3C LLC, the SD Card Association or any third party. Nothing
    # herein shall be construed as an obligation by the SD Group, the SD-3C LLC
    # or the SD Card Association to disclose or distribute any technical
    # information, know-how or other confidential information to any third party.
    #
    # $FreeBSD$
    #
    
    #include <dev/mmc/mmcreg.h>
    #include <dev/mmc/bridge.h>
    
    #
    # This is the set of callbacks that mmc bridges call into the bus, or
    # that mmc/sd card drivers call to make requests.
    #
    
    INTERFACE mmcbus;
    
    #
    # Queue and wait for a request.
    #
    METHOD int wait_for_request {
            device_t        brdev;
            device_t        reqdev;
            struct mmc_request *req;
    };
    
    #
    # Claim the current bridge, blocking the current thread until the host
    # is no longer busy.
    #
    METHOD int acquire_bus {
            device_t        brdev;
            device_t        reqdev;
    }
    
    #
    # Release the current bridge.
    #
    METHOD int release_bus {
            device_t        brdev;
            device_t        reqdev;
    }

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