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path: root/include/linux/mmc/mmc.h
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2011-10-26mmc: core: support HPI send commandJaehoon Chung
HPI command is defined in eMMC4.41. This feature is important for eMMC4.5 devices. Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-10-26mmc: core: Add cache control for eMMC4.5 deviceSeungwon Jeon
This patch adds cache feature of eMMC4.5 Spec. If device supports cache capability, host can utilize some specific operations. Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com> Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-10-26mmc: core: mmc sanitize feature support for v4.5Kyungmin Park
In the v4.5, there's no secure erase & trim support. Instead it supports the sanitize feature. Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-10-26mmc: core: Add Power Off Notify Feature eMMC 4.5Girish K S
This patch adds support for the power off notify feature, available in eMMC 4.5 devices. If the host has support for this feature, then the mmc core will notify the device by setting the POWER_OFF_NOTIFICATION byte in the extended csd register with a value of 1 (POWER_ON). For suspend mode short timeout is used, whereas for the normal poweroff long timeout is used. Signed-off-by: Girish K S <girish.shivananjappa@linaro.org> Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-10-26mmc: core: Add default timeout value for CMD6Seungwon Jeon
EXT_CSD[248] includes the default maximum timeout for CMD6. This field is added at eMMC4.5 Spec. And it can be used for default timeout except for some operations which don't define the timeout (i.e. background operation, sanitize, flush cache) in eMMC4.5 Spec. Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com> Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-10-26mmc: core: general purpose MMC partition support.Namjae Jeon
It allows gerneral purpose partitions in MMC Device. And I try to simply make mmc_blk_alloc_parts using mmc_part structure suggested by Andrei Warkentin. After patching, we see general purpose partitions like this: > cat /proc/partitions 179 0 847872 mmcblk0 179 192 4096 mmcblk0gp3 179 160 4096 mmcblk0gp2 179 128 4096 mmcblk0gp1 179 96 1052672 mmcblk0gp0 179 64 1024 mmcblk0boot1 179 32 1024 mmcblk0boot0 Signed-off-by: Namjae Jeon <linkinjeon@gmail.com> Acked-by: Andrei Warkentin <awarkentin@vmware.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-10-26mmc: core: eMMC 4.5 Power Class Selection FeatureGirish K S
This patch adds the power class selection feature available for mmc versions 4.0 and above. During the enumeration stage before switching to the lower data bus, check if the power class is supported for the current bus width. If the power class is available then switch to the power class and use the higher data bus. If power class is not supported then switch to the lower data bus in a worst case. Signed-off-by: Girish K S <girish.shivananjappa@linaro.org> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-10-26mmc: core: add eMMC hardware reset supportAdrian Hunter
eMMC's may have a hardware reset line. This patch provides a host controller operation to implement hardware reset and a function to reset and reinitialize the card. Also, for MMC, the reset is always performed before initialization. The host must set the new host capability MMC_CAP_HW_RESET to enable hardware reset. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-07-20mmc: block: allow get_card_status() to return error statusRussell King - ARM Linux
If the MMC_SEND_STATUS command is not successful, we should not return a zero status word, but instead allow the caller to know positively that an error occurred. Convert the open-coded get_card_status() to use the helper function, and provide definitions for the card state field. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Linus Walleij <linus.walleij@linaro.org> Tested-by: Pawel Moll <pawel.moll@arm.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-07-20mmc: Standardize header file inclusion checks.Robert P. J. Day
Standardize the checks for multiple MMC header file inclusion, including adding comments to terminating #endif's, and fixing one incorrect comment. Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-05-25mmc: core: Use CMD23 for multiblock transfers when we can.Andrei Warkentin
CMD23-prefixed instead of open-ended multiblock transfers have a performance advantage on some MMC cards. Signed-off-by: Andrei Warkentin <andreiw@motorola.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-05-24mmc: sd: add support for tuning during uhs initializationArindam Nath
Host Controller needs tuning during initialization to operate SDR50 and SDR104 UHS-I cards. Whether SDR50 mode actually needs tuning is indicated by bit 45 of the Host Controller Capabilities register. A new command CMD19 has been defined in the Physical Layer spec v3.01 to request the card to send tuning pattern. We enable Buffer Read Ready interrupt at the very begining of tuning procedure, because that is the only interrupt generated by the Host Controller during tuning. We program the block size to 64 in the Block Size register. We make sure that DMA Enable and Multi Block Select in the Transfer Mode register are set to 0 before actually sending CMD19. The tuning block is sent by the card to the Host Controller using DAT lines, so we set Data Present Select (bit 5) in the Command register. The Host Controller is responsible for doing the verfication of tuning block sent by the card at the hardware level. After sending CMD19, we wait for Buffer Read Ready interrupt. In case we don't receive an interrupt after the specified timeout value, we fall back on fixed sampling clock by setting Execute Tuning (bit 6) and Sampling Clock Select (bit 7) of Host Control2 register to 0. Before exiting the tuning procedure, we disable Buffer Read Ready interrupt and re-enable other interrupts. Tested by Zhangfei Gao with a Toshiba uhs card and general hs card, on mmp2 in SDMA mode. Signed-off-by: Arindam Nath <arindam.nath@amd.com> Reviewed-by: Philip Rakity <prakity@marvell.com> Tested-by: Philip Rakity <prakity@marvell.com> Acked-by: Zhangfei Gao <zhangfei.gao@marvell.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-05-24mmc: MMC boot partitions support.Andrei Warkentin
Allows device MMC boot partitions to be accessed. MMC partitions are treated effectively as separate block devices on the same MMC card. Signed-off-by: Andrei Warkentin <andreiw@motorola.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-05-24mmc: Reliable write support.Andrei Warkentin
Allows reliable writes to be used for MMC writes. Reliable writes are used to service write REQ_FUA/REQ_META requests. Handles both the legacy and the enhanced reliable write support in MMC cards. Signed-off-by: Andrei Warkentin <andreiw@motorola.com> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-05-24mmc: Ensure linux starts in eMMC user partitionPhilip Rakity
uBoot sometimes leaves eMMC pointing to the private boot partition. Ensure we always start looking at the user partition. Signed-off-by: Philip Rakity <prakity@marvell.com> Signed-off-by: Bruce Clemens <bpclemens@marvell.com> Signed-off-by: Mark F. Brown <markb@marvell.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-03-15mmc: export eMMC4.4 enhanced area details to sysfsChuanxiao Dong
Enhanced area feature is a new feature defined in eMMC4.4 standard. This user data area provides higher performance/reliability, at the expense of using twice the effective media space due to the area using SLC. The MMC driver now reads out the enhanced area offset and size and adds them to the device attributes in sysfs. Enabling the enhanced area can only be done once, and should be done in manufacturing. To use this feature, bit ERASE_GRP_DEF should also be set. Documentation/ABI/testing/sysfs-devices-mmc describes the two new attributes. Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com> Reviewed-by: Chris Ball <cjb@laptop.org> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-01-08mmc: Test bus-width for old MMC devicesAries Lee
Some old MMC devices fail with the 4/8 bits the driver tries to use exclusively. This patch adds a test for the given bus setup and falls back to the lower bit mode (until 1-bit mode) when the test fails. [Major rework and refactoring by tiwai] [Quirk addition and many fixes by prakity] Signed-off-by: Aries Lee <arieslee@jmicron.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Philip Rakity <prakity@marvell.com> Tested-by: Philip Rakity <prakity@marvell.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2010-10-23mmc: MMC 4.4 DDR supportHanumath Prasad
Add support for Dual Data Rate MMC cards as defined in the 4.4 specification. Signed-off-by: Hanumath Prasad <hanumath.prasad@stericsson.com> Cc: linux-mmc@vger.kernel.org Acked-by: Linus Walleij <linus.walleij@stericsson.com> Tested-by Zhangfei Gao <zhangfei.gao@marvell.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2010-08-12mmc: add erase, secure erase, trim and secure trim operationsAdrian Hunter
SD/MMC cards tend to support an erase operation. In addition, eMMC v4.4 cards can support secure erase, trim and secure trim operations that are all variants of the basic erase command. SD/MMC device attributes "erase_size" and "preferred_erase_size" have been added. "erase_size" is the minimum size, in bytes, of an erase operation. For MMC, "erase_size" is the erase group size reported by the card. Note that "erase_size" does not apply to trim or secure trim operations where the minimum size is always one 512 byte sector. For SD, "erase_size" is 512 if the card is block-addressed, 0 otherwise. SD/MMC cards can erase an arbitrarily large area up to and including the whole card. When erasing a large area it may be desirable to do it in smaller chunks for three reasons: 1. A single erase command will make all other I/O on the card wait. This is not a problem if the whole card is being erased, but erasing one partition will make I/O for another partition on the same card wait for the duration of the erase - which could be a several minutes. 2. To be able to inform the user of erase progress. 3. The erase timeout becomes too large to be very useful. Because the erase timeout contains a margin which is multiplied by the size of the erase area, the value can end up being several minutes for large areas. "erase_size" is not the most efficient unit to erase (especially for SD where it is just one sector), hence "preferred_erase_size" provides a good chunk size for erasing large areas. For MMC, "preferred_erase_size" is the high-capacity erase size if a card specifies one, otherwise it is based on the capacity of the card. For SD, "preferred_erase_size" is the allocation unit size specified by the card. "preferred_erase_size" is in bytes. Signed-off-by: Adrian Hunter <adrian.hunter@nokia.com> Acked-by: Jens Axboe <axboe@kernel.dk> Cc: Kyungmin Park <kmpark@infradead.org> Cc: Madhusudhan Chikkature <madhu.cr@ti.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Ben Gardiner <bengardiner@nanometrics.ca> Cc: <linux-mmc@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-11mmc: recognize CSD structureKyungmin Park
The eMMC spec 4.4 and 4.3 + additional feature chips has CSD structure version 3 and version 3 have to check the CSD_STRUCTURE byte in the EXT_CSD register. Also fix EXT_CSD revision message. [akpm@linux-foundation.org: fix comment, per Chris Ball] Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Cc: Adrian Hunter <adrian.hunter@nokia.com> Cc: Chris Ball <cjb@laptop.org> Cc: <linux-mmc@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-03-24mmc: fix incorrect interpretation of card type bitsAdrian Hunter
In the extended CSD register the CARD_TYPE is an 8-bit value of which the upper 6 bits were reserved in JEDEC specifications prior to version 4.4. In version 4.4 two of the reserved bits were designated for identifying support for the newly added High-Speed Dual Data Rate. Unfortunately the mmc_read_ext_csd() function required that the reserved bits be zero instead of ignoring them as it should. This patch makes mmc_read_ext_csd() ignore the CARD_TYPE bits that are reserved or not yet supported. It also stops the function jumping to the end as though an error occurred, when it is only warns that the CARD_TYPE bits (that it does interpret) are invalid. Signed-off-by: Adrian Hunter <adrian.hunter@nokia.com> Cc: <linux-mmc@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-23mmc: check status after MMC SWITCH commandAdrian Hunter
According to the standard, the SWITCH command should be followed by a SEND_STATUS command to check for errors. Signed-off-by: Adrian Hunter <adrian.hunter@nokia.com> Acked-by: Matt Fleming <matt@console-pimps.org> Cc: Ian Molton <ian@mnementh.co.uk> Cc: "Roberto A. Foglietta" <roberto.foglietta@gmail.com> Cc: Jarkko Lavinen <jarkko.lavinen@nokia.com> Cc: Denis Karpov <ext-denis.2.karpov@nokia.com> Cc: Pierre Ossman <pierre@ossman.eu> Cc: Philip Langdale <philipl@overt.org> Cc: "Madhusudhan" <madhu.cr@ti.com> Cc: <linux-mmc@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-23mmc: add mmc card sleep and awake supportJarkko Lavinen
Add support for the new MMC command SLEEP_AWAKE. Signed-off-by: Jarkko Lavinen <jarkko.lavinen@nokia.com> Signed-off-by: Adrian Hunter <adrian.hunter@nokia.com> Acked-by: Matt Fleming <matt@console-pimps.org> Cc: Ian Molton <ian@mnementh.co.uk> Cc: "Roberto A. Foglietta" <roberto.foglietta@gmail.com> Cc: Jarkko Lavinen <jarkko.lavinen@nokia.com> Cc: Denis Karpov <ext-denis.2.karpov@nokia.com> Cc: Pierre Ossman <pierre@ossman.eu> Cc: Philip Langdale <philipl@overt.org> Cc: "Madhusudhan" <madhu.cr@ti.com> Cc: <linux-mmc@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-15include/linux/mmc/mmc.h: remove CVS tagsAdrian Bunk
This patch removes a CVS tag that wasn't updated for a long time. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-09-23MMC headers learn about SPIDavid Brownell
Teach the MMC/SD/SDIO system headers that some hosts use SPI mode - New host capabilities and status bits * MMC_CAP_SPI, with mmc_host_is_spi() test * mmc_host.use_spi_crc flag - SPI-specific declarations: * Response types, MMC_RSP_SPI_R* * Two SPI-only commands * Status bits used native to SPI: R1_SPI_*, R2_SPI_* - Fix a few (unrelated) whitespace bugs in the headers. - Reorder a few mmc_host fields, removing several bytes of padding None of these changes affect current code. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-09-23mmc: read ext_csd version numberPierre Ossman
Make sure we do not try to parse a structure we do not understand. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-05-01mmc: Separate out protocol opsPierre Ossman
Move protocol operations and definitions into their own files in an effort to separate protocol handling and bus arbitration more clearly. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-05-01mmc: Move core functions to subdirPierre Ossman
Create a "core" subdirectory to house the central bus handling functions. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-05-01mmc: deprecate mmc bus topologyPierre Ossman
The classic MMC bus was defined as multi card bus system, which is reflected in the design in the MMC layer. When SD showed up, the bus topology was abandoned and a star topology (one card per host) was mandated. MMC version 4 has followed this, officially deprecating the bus topology. As we do not have any known users of the bus topology we can remove support for it. This will simplify the code and rectify some incorrect assumptions in the newer additions. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-02-04mmc: Add support for SDHC cardsPhilip Langdale
Thanks to the generous donation of an SDHC card by John Gilmore, and the surprisingly enlightened decision by the SD Card Association to publish useful specs, I've been able to bash out support for SDHC. The changes are not too profound: i) Add a card flag indicating the card uses block level addressing and check it in the block driver. As we never took advantage of byte-level addressing, this simply involves skipping the block -> byte translation when sending commands. ii) The layout of the CSD is changed - a set of fields are discarded to make space for a larger C_SIZE. We did not reference any of the discarded fields except those related to the C_SIZE. iii) Read and write timeouts are fixed values and not calculated from CSD values. iv) Before invoking SEND_APP_OP_COND, we must invoke the new SEND_IF_COND to inform the card we support SDHC. Signed-off-by: Philipl Langdale <philipl@overt.org> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-01-15mmc: Correct definition of R6Philip Langdale
During development of SDHC support, it was discovered that the definition for R6 was incorrect. This patch fixes that and patches the drivers that do switch on the response type. Signed-off-by: Philip Langdale <philipl@overt.org> Cc: Alex Dubov <oakad@yahoo.com> Cc: Pavel Pisa <ppisa@pikron.com> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2006-09-16[MMC] Remove data->blksz_bits memberRussell King
data->blksz_bits is unused now - remove it. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-09-07[MMC] Cleanup 385e3227d4d83ab13d7767c4bb3593b0256bf246Russell King
Rather than having two places which independently calculate the timeout for data transfers, make it a library function instead. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Pierre Ossman <drzeus@drzeus.cx>
2006-05-19[ARM] 3531/1: i.MX/MX1 SD/MMC ensure, that clock are stopped before new ↵Pavel Pisa
command and cleanups Patch from Pavel Pisa There has been problems that for some paths that clock are not stopped during new command programming and initiation. Result is issuing of incorrect command to the card. Some other problems are cleaned too. Noisy report of known ERRATUM #4 has been suppressed. Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-02-22[MMC] Fix mmc_cmd_type() maskRussell King
It's MMC_CMD_MASK not MMC_CMD_TYPE. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-02-02[MMC] Add MMC command type flagsRussell King
Some hosts need to know the command type, so pass it via a set of flags in cmd->flags. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-01-09[MMC] Indicate that R1/R1b contains command opcodePierre Ossman
Some controllers actually check the first byte of the response (most don't). This byte contains the command opcode for R1/R1b and all 1:s for other types. The difference must be indicated to the controller so it knows which reply to expect. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2006-01-09[MMC] Add DATA_MULTI flagRussell King
Some hosts need to know that a transfer will be multi-block. Add a data flag to indicate multiple data block transfers. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-10-28[ARM] 3031/1: fix typos in comments of mmc.hErik Hovland
Patch from Erik Hovland I noticed that the same typo (i before c in associated) showed up twice in the file kernel/include/linux/mmc/mmc.h. This patch fixes both of the instances I found with this mistake. The typos are in comments and should have no affect on working code. E Signed-off-by: Erik Hovland <erik@hovland.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-09-07[PATCH] sd: initialize SD cardsPierre Ossman
Support for the Secure Digital protocol in the MMC layer. A summary of the legal issues surrounding SD cards, as understood by yours truly: Members of the Secure Digital Association, hereafter SDA, are required to sign a NDA[1] before given access to any specifications. It has been speculated that including an SD implementation would forbid these members to redistribute Linux. This is the basic problem with SD support so it is unclear if it even is a problem since it has no effect on those of us that aren't members. The SDA doesn't seem to enforce these rules though since the patches included here are based on documentation made public by some of the members. The most complete specs[2] are actually released by Sandisk, one of the founding companies of the SDA. Because of this the NDA is considered a non-issue by most involved in the discussions concerning these patches. It might be that the SDA is only interested in protecting the so called "secure" bits of SD, which so far hasn't been found in any public spec. (The card is split into two sections, one "normal" and one "secure" which has an access scheme similar to TPM:s). (As a side note, Microsoft is working to make things easier for us since they want to be able to include the source code for a SD driver in one of their development kits. HP is making sure that the new NDA will allow a Linux implementation. So far only the SDIO specs have been opened up[3]. More will hopefully follow.) [1] http://www.sdcard.org/membership/images/ippolicy.pdf [2] http://www.sandisk.com/pdf/oem/ProdManualSDCardv1.9.pdf [3] http://www.sdcard.org/sdio/Simplified%20SDIO%20Card%20Specification.pdf This patch contains the central parts of the SD support. If no MMC cards are found on a bus then the MMC layer proceeds looking for SD cards. Helper functions are extended to handle the special needs of SD cards. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx> Cc: Russell King <rmk@arm.linux.org.uk> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-04-16Linux-2.6.12-rc2v2.6.12-rc2Linus Torvalds
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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