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freebsd-skq/sys/dev/mmc/mmcvar.h

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Preliminary MMC stack. This stack supports SD 1.0 cards only, but should be easily adapted to SD 2.0 (aka SDHC), SDIO, MMC and MMCplus cards. At the present time, there's only one bridge driver for the ARM9 based Atmel AT91RM9200.
2006-10-20 06:39:59 +00:00
/*-
* Copyright (c) 2006 Bernd Walter. All rights reserved.
* 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 ``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 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.
*
A careful reading of the disclaimer that is required to download the 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.
2007-05-26 05:23:36 +00:00
* 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.
*
Preliminary MMC stack. This stack supports SD 1.0 cards only, but should be easily adapted to SD 2.0 (aka SDHC), SDIO, MMC and MMCplus cards. At the present time, there's only one bridge driver for the ARM9 based Atmel AT91RM9200.
2006-10-20 06:39:59 +00:00
* "$FreeBSD$"
*/
#ifndef DEV_MMC_MMCVAR_H
#define DEV_MMC_MMCVAR_H
Give mmcsd driver a bit more information about card. It allows to reorganize log message in a way a bit more common for disk devices. Also it will allow mmcsd driver to use MMC/SD specific commands when needed.
2008-10-11 13:05:13 +00:00
#include <dev/mmc/bridge.h>
Preliminary MMC stack. This stack supports SD 1.0 cards only, but should be easily adapted to SD 2.0 (aka SDHC), SDIO, MMC and MMCplus cards. At the present time, there's only one bridge driver for the ARM9 based Atmel AT91RM9200.
2006-10-20 06:39:59 +00:00
enum mmc_device_ivars {
MMC_IVAR_DSR_IMP,
MMC_IVAR_MEDIA_SIZE,
MMC_IVAR_RCA,
MMC_IVAR_SECTOR_SIZE,
MMC_IVAR_TRAN_SPEED,
Propigate read-only status of cards. Right now it is read only at device attach time. We may need to read this more often in the future, but for now simplicity of implementation wins. Submitted by: mav@
2008-09-28 22:40:11 +00:00
MMC_IVAR_READ_ONLY,
Set of mmc layer improvements: - add MMC support. - add SDHC support. - add 4 and 8 bit bus width support. - add High Speed bus timing support.
2008-10-08 17:35:41 +00:00
MMC_IVAR_HIGH_CAP,
Give mmcsd driver a bit more information about card. It allows to reorganize log message in a way a bit more common for disk devices. Also it will allow mmcsd driver to use MMC/SD specific commands when needed.
2008-10-11 13:05:13 +00:00
MMC_IVAR_CARD_TYPE,
MMC_IVAR_BUS_WIDTH,
Implement BIO_DELETE command with MMC and SD erase commands. Erase operation gives card's logic information about unused areas to help it implement wear-leveling with lower overhead comparing to usual writing. Erase is much faster then write and does not depends on data bus speed. Also as result of hitting in-card write logic optimizations I have measured up to 50% performance boost on writing undersized blocks into preerased areas. At the same time there are strict limitations on size and allignment of erase operations. We can erase only blocks aligned to the erase sector size and with size multiple of it. Different cards has different erase sector size which usually varies from 64KB to 4MB. SD cards actually allow to erase smaller blocks, but it is much more expensive as it is implemented via read-erase-write sequence and so not sutable for the BIO_DELETE purposes. Reviewed by: imp@
2008-10-18 16:17:04 +00:00
MMC_IVAR_ERASE_SECTOR,
Allow card reader bridge driver to report maximum supported transfer size. sdhci supports up to 65535 blocks transfers, at91_mci - one block. Enable multiblock operations disabled before to follow at91_mci driver limitations. Reviewed by: imp@
2008-10-29 20:01:26 +00:00
MMC_IVAR_MAX_DATA,
o Fixes: - When switching to 4-bit operation, send a SET_CLR_CARD_DETECT command to disconnect the card-detect pull-up resistor from the DAT3 line before sending the SET_BUS_WIDTH command. - Add the missing "reserved" zero entry to the mantissa table used to decode various CSD fields. This was causing SD cards to report that they could run at 30 MHz instead of the maximum 25 MHz mandated in the spec. o Enhancements: - At the MMC layer, format various info from the CID into a string that uniquely identifies the card instance (manufacturer number, serial number, product name and revision, etc). Export it as an instance variable. - At the MMCSD layer, display the formatted card ID string, and also report the clock speed of the hardware (not the card's max speed), and the number of bits and number of blocks per transfer. It comes out like this now: mmcsd0: 968MB <SD SD01G 8.0 SN 276886905 MFG 08/2008 by 3 SD> at mmc0 22.5MHz/4bit/128-block o Use DEVMETHOD_END. o Use NULL instead of 0 for pointers. PR: 156496 Submitted by: Ian Lepore MFC after: 1 week
2012-04-21 01:51:16 +00:00
MMC_IVAR_CARD_ID_STRING
Preliminary MMC stack. This stack supports SD 1.0 cards only, but should be easily adapted to SD 2.0 (aka SDHC), SDIO, MMC and MMCplus cards. At the present time, there's only one bridge driver for the ARM9 based Atmel AT91RM9200.
2006-10-20 06:39:59 +00:00
};
/*
* Simplified accessors for pci devices
*/
#define MMC_ACCESSOR(var, ivar, type) \
__BUS_ACCESSOR(mmc, var, MMC, ivar, type)
MMC_ACCESSOR(dsr_imp, DSR_IMP, int)
Fix read_ivar implementation for MMC and SD. 1. Both mmc_read_ivar() and sdhci_read_ivar() use the expression '*(int *)result = val' to assign to result which is uintptr_t *. This does not work on big-endian 64 bit systems. 2. The media_size ivar is declared as 'off_t' which does not fit into uintptr_t in 32bit systems, change this to long. Submitted by: kanthms at netlogicmicro com (initial version)
2011-05-30 06:23:51 +00:00
MMC_ACCESSOR(media_size, MEDIA_SIZE, long)
Preliminary MMC stack. This stack supports SD 1.0 cards only, but should be easily adapted to SD 2.0 (aka SDHC), SDIO, MMC and MMCplus cards. At the present time, there's only one bridge driver for the ARM9 based Atmel AT91RM9200.
2006-10-20 06:39:59 +00:00
MMC_ACCESSOR(rca, RCA, int)
MMC_ACCESSOR(sector_size, SECTOR_SIZE, int)
MMC_ACCESSOR(tran_speed, TRAN_SPEED, int)
Propigate read-only status of cards. Right now it is read only at device attach time. We may need to read this more often in the future, but for now simplicity of implementation wins. Submitted by: mav@
2008-09-28 22:40:11 +00:00
MMC_ACCESSOR(read_only, READ_ONLY, int)
Set of mmc layer improvements: - add MMC support. - add SDHC support. - add 4 and 8 bit bus width support. - add High Speed bus timing support.
2008-10-08 17:35:41 +00:00
MMC_ACCESSOR(high_cap, HIGH_CAP, int)
Give mmcsd driver a bit more information about card. It allows to reorganize log message in a way a bit more common for disk devices. Also it will allow mmcsd driver to use MMC/SD specific commands when needed.
2008-10-11 13:05:13 +00:00
MMC_ACCESSOR(card_type, CARD_TYPE, int)
MMC_ACCESSOR(bus_width, BUS_WIDTH, int)
Implement BIO_DELETE command with MMC and SD erase commands. Erase operation gives card's logic information about unused areas to help it implement wear-leveling with lower overhead comparing to usual writing. Erase is much faster then write and does not depends on data bus speed. Also as result of hitting in-card write logic optimizations I have measured up to 50% performance boost on writing undersized blocks into preerased areas. At the same time there are strict limitations on size and allignment of erase operations. We can erase only blocks aligned to the erase sector size and with size multiple of it. Different cards has different erase sector size which usually varies from 64KB to 4MB. SD cards actually allow to erase smaller blocks, but it is much more expensive as it is implemented via read-erase-write sequence and so not sutable for the BIO_DELETE purposes. Reviewed by: imp@
2008-10-18 16:17:04 +00:00
MMC_ACCESSOR(erase_sector, ERASE_SECTOR, int)
Allow card reader bridge driver to report maximum supported transfer size. sdhci supports up to 65535 blocks transfers, at91_mci - one block. Enable multiblock operations disabled before to follow at91_mci driver limitations. Reviewed by: imp@
2008-10-29 20:01:26 +00:00
MMC_ACCESSOR(max_data, MAX_DATA, int)
o Fixes: - When switching to 4-bit operation, send a SET_CLR_CARD_DETECT command to disconnect the card-detect pull-up resistor from the DAT3 line before sending the SET_BUS_WIDTH command. - Add the missing "reserved" zero entry to the mantissa table used to decode various CSD fields. This was causing SD cards to report that they could run at 30 MHz instead of the maximum 25 MHz mandated in the spec. o Enhancements: - At the MMC layer, format various info from the CID into a string that uniquely identifies the card instance (manufacturer number, serial number, product name and revision, etc). Export it as an instance variable. - At the MMCSD layer, display the formatted card ID string, and also report the clock speed of the hardware (not the card's max speed), and the number of bits and number of blocks per transfer. It comes out like this now: mmcsd0: 968MB <SD SD01G 8.0 SN 276886905 MFG 08/2008 by 3 SD> at mmc0 22.5MHz/4bit/128-block o Use DEVMETHOD_END. o Use NULL instead of 0 for pointers. PR: 156496 Submitted by: Ian Lepore MFC after: 1 week
2012-04-21 01:51:16 +00:00
MMC_ACCESSOR(card_id_string, CARD_ID_STRING, const char *)
Preliminary MMC stack. This stack supports SD 1.0 cards only, but should be easily adapted to SD 2.0 (aka SDHC), SDIO, MMC and MMCplus cards. At the present time, there's only one bridge driver for the ARM9 based Atmel AT91RM9200.
2006-10-20 06:39:59 +00:00
#endif /* DEV_MMC_MMCVAR_H */
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