14eced725c
SD Simplified specification, as well as other SD and SDIO implemenations I've examined, suggest this disclaimer may be required. It is unclear to me exactly what the license would be for, or why it might be required. Err on the side of caution and include this disclaimer so anybody deploying this code can judge for themselves. I have no further unformation about the details.
112 lines
4.0 KiB
Objective-C
112 lines
4.0 KiB
Objective-C
#-
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# Copyright (c) 2006 M. Warner Losh
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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# Portions of this software may have been developed with reference to
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# the SD Simplified Specification. The following disclaimer may apply:
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#
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# The following conditions apply to the release of the simplified
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# specification ("Simplified Specification") by the SD Card Association and
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# the SD Group. The Simplified Specification is a subset of the complete SD
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# Specification which is owned by the SD Card Association and the SD
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# Group. This Simplified Specification is provided on a non-confidential
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# basis subject to the disclaimers below. Any implementation of the
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# Simplified Specification may require a license from the SD Card
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# Association, SD Group, SD-3C LLC or other third parties.
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#
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# Disclaimers:
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#
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# The information contained in the Simplified Specification is presented only
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# as a standard specification for SD Cards and SD Host/Ancillary products and
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# is provided "AS-IS" without any representations or warranties of any
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# kind. No responsibility is assumed by the SD Group, SD-3C LLC or the SD
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# Card Association for any damages, any infringements of patents or other
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# right of the SD Group, SD-3C LLC, the SD Card Association or any third
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# parties, which may result from its use. No license is granted by
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# implication, estoppel or otherwise under any patent or other rights of the
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# SD Group, SD-3C LLC, the SD Card Association or any third party. Nothing
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# herein shall be construed as an obligation by the SD Group, the SD-3C LLC
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# or the SD Card Association to disclose or distribute any technical
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# information, know-how or other confidential information to any third party.
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#
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# $FreeBSD$
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#
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#include <sys/types.h>
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#include <dev/mmc/bridge.h>
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#include <dev/mmc/mmcreg.h>
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#
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# This is the interface that a mmc bridge chip gives to the mmc bus
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# that attaches to the mmc bridge.
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#
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INTERFACE mmcbr;
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#
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# Called by the mmcbus to setup the IO pins correctly, the voltage to use
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# for the card, the type of selects, power modes and bus width.
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#
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METHOD int update_ios {
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device_t brdev;
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device_t reqdev;
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};
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#
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# Called by the mmcbus or its children to schedule a mmc request. These
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# requests are queued. Time passes. The bridge then gets notification
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# of the status of request, who then notifies the requesting device via
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# the xfer_done mmcbus method.
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#
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METHOD int request {
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device_t brdev;
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device_t reqdev;
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struct mmc_request *req;
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};
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#
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# Called by mmcbus to get the read only status bits.
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#
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METHOD int get_ro {
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device_t brdev;
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device_t reqdev;
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};
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#
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# Claim the current bridge, blocking the current thread until the host
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# is no longer busy.
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#
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METHOD int acquire_host {
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device_t brdev;
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device_t reqdev;
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}
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#
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# Release the current bridge.
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#
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METHOD int release_host {
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device_t brdev;
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device_t reqdev;
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}
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