e8e5c76419
Unlike SD cards, that publish RCA in response to CMD3, MMC cards expect the host to set RCA itself. Since we don't support multiple MMC cards on the bus, just assign a static RCA of 2 to the attached MMC card. Approved by: imp (mentor) Differential Revision: https://reviews.freebsd.org/D13063
106 lines
4.3 KiB
C
106 lines
4.3 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2014-2016 Ilya Bakulin. 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 ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 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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* Inspired coded in sys/dev/mmc. Thanks to Warner Losh <imp@FreeBSD.org>,
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* Bernd Walter <tisco@FreeBSD.org>, and other authors.
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*
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* $FreeBSD$
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*/
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#ifndef CAM_MMC_H
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#define CAM_MMC_H
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#include <dev/mmc/mmcreg.h>
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/*
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* This structure describes an MMC/SD card
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*/
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struct mmc_params {
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u_int8_t model[40]; /* Card model */
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/* Card OCR */
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uint32_t card_ocr;
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/* OCR of the IO portion of the card */
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uint32_t io_ocr;
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/* Card CID -- raw and parsed */
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uint32_t card_cid[4];
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struct mmc_cid cid;
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/* Card CSD -- raw */
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uint32_t card_csd[4];
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/* Card RCA */
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uint16_t card_rca;
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/* What kind of card is it */
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uint32_t card_features;
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#define CARD_FEATURE_MEMORY 0x1
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#define CARD_FEATURE_SDHC 0x1 << 1
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#define CARD_FEATURE_SDIO 0x1 << 2
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#define CARD_FEATURE_SD20 0x1 << 3
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#define CARD_FEATURE_MMC 0x1 << 4
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#define CARD_FEATURE_18V 0x1 << 5
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uint8_t sdio_func_count;
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} __packed;
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/*
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* Only one MMC card on bus is supported now.
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* If we ever want to support multiple MMC cards on the same bus,
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* mmc_xpt needs to be extended to issue new RCAs based on number
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* of already probed cards. Furthermore, retuning and high-speed
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* settings should also take all cards into account.
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*/
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#define MMC_PROPOSED_RCA 2
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#endif
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