79f39c6aa1
This also involves adding a quirk table as TRIM is broken for some Kingston eMMC devices, though. Compared to ERASE (declared "legacy" in the eMMC specification v5.1), TRIM has the advantage of operating on write sectors rather than on erase sectors, which typically are of a much larger size. Thus, employing TRIM, we don't need to fiddle with coalescing BIO_DELETE requests that are also of (write) sector units into erase sectors, which might not even add up in all cases. - For some SanDisk iNAND devices, the CMD38 argument, e. g. ERASE, TRIM etc., has to be specified via EXT_CSD[113], which now is also handled via a quirk. - My initial understanding was that for eMMC partitions, the granularity should be used as erase sector size, e. g. 128 KB for boot partitions. However, rereading the relevant parts of the eMMC specification v5.1, this isn't actually correct. So drop the code which used partition granularities for delmaxsize and stripesize. For the most part, this change is a NOP, though, because a) for ERASE, mmcsd_delete() used the erase sector size unconditionally for all partitions anyway and b) g_disk_limit() doesn't actually take the stripesize into account. - Take some more advantage of mmcsd_errmsg() in mmcsd(4) for making error codes human readable.
101 lines
4.2 KiB
C
101 lines
4.2 KiB
C
/*-
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* Copyright (c) 2006 Bernd Walter. All rights reserved.
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* Copyright (c) 2006 M. Warner Losh. 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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* $FreeBSD$
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*/
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#ifndef DEV_MMC_MMCVAR_H
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#define DEV_MMC_MMCVAR_H
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enum mmc_device_ivars {
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MMC_IVAR_SPEC_VERS,
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MMC_IVAR_DSR_IMP,
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MMC_IVAR_MEDIA_SIZE,
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MMC_IVAR_RCA,
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MMC_IVAR_SECTOR_SIZE,
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MMC_IVAR_TRAN_SPEED,
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MMC_IVAR_READ_ONLY,
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MMC_IVAR_HIGH_CAP,
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MMC_IVAR_CARD_TYPE,
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MMC_IVAR_BUS_WIDTH,
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MMC_IVAR_ERASE_SECTOR,
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MMC_IVAR_MAX_DATA,
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MMC_IVAR_CMD6_TIMEOUT,
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MMC_IVAR_QUIRKS,
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MMC_IVAR_CARD_ID_STRING,
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MMC_IVAR_CARD_SN_STRING,
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};
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/*
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* Simplified accessors for mmc devices
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*/
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#define MMC_ACCESSOR(var, ivar, type) \
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__BUS_ACCESSOR(mmc, var, MMC, ivar, type)
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MMC_ACCESSOR(spec_vers, SPEC_VERS, uint8_t)
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MMC_ACCESSOR(dsr_imp, DSR_IMP, int)
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MMC_ACCESSOR(media_size, MEDIA_SIZE, long)
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MMC_ACCESSOR(rca, RCA, int)
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MMC_ACCESSOR(sector_size, SECTOR_SIZE, int)
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MMC_ACCESSOR(tran_speed, TRAN_SPEED, int)
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MMC_ACCESSOR(read_only, READ_ONLY, int)
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MMC_ACCESSOR(high_cap, HIGH_CAP, int)
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MMC_ACCESSOR(card_type, CARD_TYPE, int)
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MMC_ACCESSOR(bus_width, BUS_WIDTH, int)
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MMC_ACCESSOR(erase_sector, ERASE_SECTOR, int)
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MMC_ACCESSOR(max_data, MAX_DATA, int)
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MMC_ACCESSOR(cmd6_timeout, CMD6_TIMEOUT, u_int)
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MMC_ACCESSOR(quirks, QUIRKS, u_int)
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MMC_ACCESSOR(card_id_string, CARD_ID_STRING, const char *)
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MMC_ACCESSOR(card_sn_string, CARD_SN_STRING, const char *)
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#endif /* DEV_MMC_MMCVAR_H */
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