- 25 2月, 2013 3 次提交
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由 Seungwon Jeon 提交于
This patch supports packed write command of eMMC4.5 devices. Several writes can be grouped in packed command and all data of the individual commands can be sent in a single transfer on the bus. Large amounts of data in one transfer rather than several data of small size are effective for eMMC write internally. As a result, packed command help write throughput be improved. The following tables show the results of packed write. Type A: test none | packed iozone 25.8 | 31 tiotest 27.6 | 31.2 lmdd 31.2 | 35.4 Type B: test none | packed iozone 44.1 | 51.1 tiotest 47.9 | 52.5 lmdd 51.6 | 59.2 Type C: test none | packed iozone 19.5 | 32 tiotest 19.9 | 34.5 lmdd 22.8 | 40.7 Signed-off-by: NSeungwon Jeon <tgih.jun@samsung.com> Reviewed-by: NMaya Erez <merez@codeaurora.org> Reviewed-by: NNamjae Jeon <linkinjeon@gmail.com> Signed-off-by: NChris Ball <cjb@laptop.org>
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由 Seungwon Jeon 提交于
This patch adds packed command feature of eMMC4.5. The maximum number for packing read (or write) is offered and exception event relevant to packed command which is used for error handling is enabled. If host wants to use this feature, MMC_CAP2_PACKED_CMD should be set. Signed-off-by: NSeungwon Jeon <tgih.jun@samsung.com> Reviewed-by: NMaya Erez <merez@codeaurora.org> Reviewed-by: NSubhash Jadavani <subhashj@codeaurora.org> Reviewed-by: NNamjae Jeon <linkinjeon@gmail.com> Signed-off-by: NChris Ball <cjb@laptop.org>
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由 Zhang, YiX X 提交于
The right value is 54 according to eMMC 4.5 specification. Signed-off-by: NZhangYi <yix.x.zhang@intel.com> Signed-off-by: NChris Ball <cjb@laptop.org>
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- 12 2月, 2013 1 次提交
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由 Konstantin Dorfman 提交于
When current request is running on the bus and if next request fetched by mmcqd is NULL, mmc context (mmcqd thread) gets blocked until the current request completes. This means that if new request comes in while the mmcqd thread is blocked, this new request can not be prepared in parallel to current ongoing request. This may result in delaying the new request execution and increase it's latency. This change allows to wake up the MMC thread on new request arrival. Now once the MMC thread is woken up, a new request can be fetched and prepared in parallel to the current running request which means this new request can be started immediately after the current running request completes. With this change read throughput is improved by 16%. Signed-off-by: NKonstantin Dorfman <kdorfman@codeaurora.org> Reviewed-by: NSeungwon Jeon <tgih.jun@samsung.com> Signed-off-by: NChris Ball <cjb@laptop.org>
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- 07 12月, 2012 1 次提交
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由 Loic Pallardy 提交于
Following JEDEC standard, if the mmc supports RPMB partition, a new interface is created and exposed via /dev/block. Users will be able to access RPMB partition using standard mmc IOCTL commands. Signed-off-by: NAlex Macro <alex.macro@stericsson.com> Signed-off-by: NLoic Pallardy <loic.pallardy@stericsson.com> Reviewed-by: NNamjae Jeon <linkinjeon@gmail.com> Acked-by: NLinus Walleij <linus.walleij@linaro.org> Acked-by: NJohan Rudholm <johan.rudholm@stericsson.com> Acked-by: NKrishna Konda <kkonda@codeaurora.org> Signed-off-by: NChris Ball <cjb@laptop.org>
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- 08 10月, 2012 1 次提交
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由 Ulf Hansson 提交于
This patch fixes up the broken suspend sequence for eMMC with sleep support. Additionally it reworks the eMMC4.5 Power Off Notification feature so it fits together with the existing sleep feature. The CMD0 based re-initialization of the eMMC at resume is re-introduced to maintain compatiblity for devices using sleep. A host shall use MMC_CAP2_POWEROFF_NOTIFY to enable the Power Off Notification feature. We might be able to remove this cap later on, if we think that Power Off Notification always is preferred over sleep, even if the host is not able to cut the eMMC VCCQ power. Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org> Signed-off-by: NSaugata Das <saugata.das@linaro.org> Acked-by: NLinus Walleij <linus.walleij@linaro.org> Signed-off-by: NChris Ball <cjb@laptop.org>
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- 03 10月, 2012 1 次提交
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由 Jaehoon Chung 提交于
Enable eMMC background operations (BKOPS) feature. If URGENT_BKOPS is set after a response, note that BKOPS are required. Immediately run BKOPS if required. Read/write operations should be requested during BKOPS(LEVEL-1), then issue HPI to interrupt the ongoing BKOPS and service the foreground operation. (This patch only controls the LEVEL2/3.) When repeating the writing 1GB data, at a certain time, performance is decreased. At that time, card triggers the Level-3 or Level-2. After running bkops, performance is recovered. Future considerations: * Check BKOPS_LEVEL=1 and start BKOPS in a preventive manner. * Interrupt ongoing BKOPS before powering off the card. * How do we get BKOPS_STATUS value (periodically send ext_csd command)? * If using periodic bkops, also consider runtime_pm control. Signed-off-by: NJaehoon Chung <jh80.chung@samsung.com> Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com> Signed-off-by: NKonstantin Dorfman <kdorfman@codeaurora.org> Reviewed-by: NMaya Erez <merez@codeaurora.org> Signed-off-by: NChris Ball <cjb@laptop.org>
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- 05 9月, 2012 1 次提交
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由 Ian Chen 提交于
For several MoviNAND eMMC parts, there are known issues with secure erase and secure trim. For these specific MoviNAND devices, we skip these operations. Specifically, there is a bug in the eMMC firmware that causes unrecoverable corruption when the MMC is erased with MMC_CAP_ERASE enabled. References: http://forum.xda-developers.com/showthread.php?t=1644364 https://plus.google.com/111398485184813224730/posts/21pTYfTsCkB#111398485184813224730/posts/21pTYfTsCkBSigned-off-by: NIan Chen <ian.cy.chen@samsung.com> Reviewed-by: NNamjae Jeon <linkinjeon@gmail.com> Acked-by: NJaehoon Chung <jh80.chung@samsung.com> Reviewed-by: NLinus Walleij <linus.walleij@linaro.org> Cc: stable <stable@vger.kernel.org> [3.0+] Signed-off-by: NChris Ball <cjb@laptop.org>
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- 21 7月, 2012 1 次提交
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由 Philip Rakity 提交于
max_current_caps can return 0 if not available from the sd controller. If no regulator is present or the regulator specifies a current less then 200ma, we no longer still set the 200mA caps bit anyway. Signed-off-by: NPhilip Rakity <prakity@marvell.com> Reviewed-by: NAaron Lu <aaron_lu@amd.com> Signed-off-by: NChris Ball <cjb@laptop.org>
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- 09 5月, 2012 1 次提交
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由 Seungwon Jeon 提交于
Current implementation decides the card type exclusively. Even though eMMC device can support both HS200 and DDR mode, card type will be set only for HS200. If the host doesn't support HS200 but has DDR capability, then DDR mode can't be selected. Signed-off-by: NSeungwon Jeon <tgih.jun@samsung.com> Reviewed-by: NSubhash Jadavani <subhashj@codeaurora.org> Signed-off-by: NChris Ball <cjb@laptop.org>
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- 21 4月, 2012 1 次提交
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由 Chuanxiao Dong 提交于
MMC bus is using legacy suspend/resume method, which is not compatible if runtime pm callbacks are used. In this scenario, MMC bus suspend/resume callbacks cannot be called when system entering S3. So change to use the new defined dev_pm_ops for system sleeping mode. Tested on AM335x Platform. Solves major issue/crash reported at http://www.mail-archive.com/linux-omap@vger.kernel.org/msg65425.htmlSigned-off-by: NChuanxiao Dong <chuanxiao.dong@intel.com> Tested-by: NHebbar, Gururaja <gururaja.hebbar@ti.com> Acked-by: NLinus Walleij <linus.walleij@linaro.org> Acked-by: NUlf Hansson <ulf.hansson@stericsson.com> Signed-off-by: NChris Ball <cjb@laptop.org>
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- 26 3月, 2012 1 次提交
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由 Saugata Das 提交于
MMC-4.5 data tag feature will be used to store the file system meta-data in the tagged region of eMMC. This will improve the write and subsequent read transfer time for the meta data. Signed-off-by: NSaugata Das <saugata.das@linaro.org> Tested-by: NVenkatraman S <svenkatr@ti.com> Signed-off-by: NChris Ball <cjb@laptop.org>
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- 16 3月, 2012 1 次提交
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由 Paul Gortmaker 提交于
The <linux/device.h> header includes a lot of stuff, and it in turn gets a lot of use just for the basic "struct device" which appears so often. Clean up the users as follows: 1) For those headers only needing "struct device" as a pointer in fcn args, replace the include with exactly that. 2) For headers not really using anything from device.h, simply delete the include altogether. 3) For headers relying on getting device.h implicitly before being included themselves, now explicitly include device.h 4) For files in which doing #1 or #2 uncovers an implicit dependency on some other header, fix by explicitly adding the required header(s). Any C files that were implicitly relying on device.h to be present have already been dealt with in advance. Total removals from #1 and #2: 51. Total additions coming from #3: 9. Total other implicit dependencies from #4: 7. As of 3.3-rc1, there were 110, so a net removal of 42 gives about a 38% reduction in device.h presence in include/* Signed-off-by: NPaul Gortmaker <paul.gortmaker@windriver.com>
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- 14 2月, 2012 1 次提交
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由 Girish K S 提交于
Modified the mmc_poweroff to resume before sending the poweroff notification command. In sleep mode only AWAKE and RESET commands are allowed, so before sending the poweroff notification command resume from sleep mode and then send the notification command. PowerOff Notify is tested on a Synopsis Designware Host Controller (eMMC 4.5). The suspend to RAM and resume works fine. Signed-off-by: NGirish K S <girish.shivananjappa@linaro.org> Tested-by: NGirish K S <girish.shivananjappa@linaro.org> Reviewed-by: NSaugata Das <saugata.das@linaro.org> Signed-off-by: NChris Ball <cjb@laptop.org>
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- 13 1月, 2012 1 次提交
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由 Girish K S 提交于
This patch adds the support of the HS200 bus speed for eMMC 4.5 devices. The eMMC 4.5 devices have support for 200MHz bus speed. The function prototype of the tuning function is modified to handle the tuning command number which is different in sd and mmc case. Signed-off-by: NGirish K S <girish.shivananjappa@linaro.org> Signed-off-by: NPhilip Rakity <prakity@marvell.com> Signed-off-by: NChris Ball <cjb@laptop.org>
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- 12 1月, 2012 4 次提交
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由 Johan Rudholm 提交于
Enable boot partitions to be read-only locked until next power on via a sysfs entry. There will be one sysfs entry for each boot partition: /sys/block/mmcblkXbootY/ro_lock_until_next_power_on Each boot partition is locked by writing 1 to its file. Signed-off-by: NJohan Rudholm <johan.rudholm@stericsson.com> Signed-off-by: NJohn Beckett <john.beckett@stericsson.com> Signed-off-by: NChris Ball <cjb@laptop.org>
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由 Adrian Hunter 提交于
Add a function mmc_detect_card_removed() which upper layers can use to determine immediately if a card has been removed. This function should be called after an I/O request fails so that all queued I/O requests can be errored out immediately instead of waiting for the card device to be removed. Signed-off-by: NAdrian Hunter <adrian.hunter@intel.com> Acked-by: NSujit Reddy Thumma <sthumma@codeaurora.org> Signed-off-by: NChris Ball <cjb@laptop.org>
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由 Philip Rakity 提交于
This patch adds support for sdio UHS cards per the version 3.0 spec. UHS mode is only enabled for version 3.0 cards when both the host and the controller support UHS modes. 1.8v signaling support is removed if both the card and the host do not support UHS. This is done to maintain compatibility and some system/card combinations break when 1.8v signaling is enabled when the host does not support UHS. Signed-off-by: NPhilip Rakity <prakity@marvell.com> Signed-off-by: NAaron Lu <Aaron.lu@amd.com> Reviewed-by: NArindam Nath <arindam.nath@amd.com> Tested-by: NBing Zhao <bzhao@marvell.com> Signed-off-by: NChris Ball <cjb@laptop.org>
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由 Qiang Liu 提交于
Add new macros for the high speed 50MHz case, rather than having a confusing reuse of the value for UHS SDR50, which is 100MHz. Reported-by: NAaron Lu <aaron.lu@amd.com> Signed-off-by: NChris Ball <cjb@laptop.org>
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- 11 12月, 2011 1 次提交
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由 Stefan Nilsson XK 提交于
Adds a quirk that sets the data read timeout to a fixed value instead of relying on the information in the CSD. The timeout value chosen is 300ms since that has proven enough for the problematic cards found, but could be increased if other cards require this. This patch also enables this quirk for certain Micron cards known to have this problem. Signed-off-by: NStefan Nilsson XK <stefan.xk.nilsson@stericsson.com> Signed-off-by: NUlf Hansson <ulf.hansson@stericsson.com> Acked-by: NLinus Walleij <linus.walleij@linaro.org> Cc: <stable@kernel.org> Signed-off-by: NChris Ball <cjb@laptop.org>
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- 27 10月, 2011 9 次提交
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由 Namjae Jeon 提交于
'DISK_NAME_LEN' is undeclared when CONFIG_BLOCK is disabled; its use was introduced via genhd.h by the general purpose partition patch. To fix, we just add our own MAX_MMC_PART_NAME_LEN macro instead of using DISK_NAME_LEN. Reported-by: NRandy Dunlap <rdunlap@xenotime.net> Signed-off-by: NNamjae Jeon <linkinjeon@gmail.com> Acked-by: NRandy Dunlap <rdunlap@xenotime.net> Acked-by: NAndrei Warkentin <andreiw@vmware.com> Signed-off-by: NChris Ball <cjb@laptop.org>
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由 Jaehoon Chung 提交于
HPI command is defined in eMMC4.41. This feature is important for eMMC4.5 devices. Signed-off-by: NJaehoon Chung <jh80.chung@samsung.com> Signed-off-by: NChris Ball <cjb@laptop.org>
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由 Seungwon Jeon 提交于
This patch adds cache feature of eMMC4.5 Spec. If device supports cache capability, host can utilize some specific operations. Signed-off-by: NSeungwon Jeon <tgih.jun@samsung.com> Signed-off-by: NJaehoon Chung <jh80.chung@samsung.com> Signed-off-by: NChris Ball <cjb@laptop.org>
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由 Kyungmin Park 提交于
MMC v4.5 supports the DISCARD feature (CMD38). It's different from trim and there's no check bit. Currently it's only supported at v4.5. Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com> Signed-off-by: NJaehoon Chung <jh80.chung@samsung.com> Signed-off-by: NChris Ball <cjb@laptop.org>
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由 Girish K S 提交于
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: NGirish K S <girish.shivananjappa@linaro.org> Signed-off-by: NJaehoon Chung <jh80.chung@samsung.com> Signed-off-by: NChris Ball <cjb@laptop.org>
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由 Seungwon Jeon 提交于
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: NSeungwon Jeon <tgih.jun@samsung.com> Signed-off-by: NJaehoon Chung <jh80.chung@samsung.com> Signed-off-by: NChris Ball <cjb@laptop.org>
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由 Namjae Jeon 提交于
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: NNamjae Jeon <linkinjeon@gmail.com> Acked-by: NAndrei Warkentin <awarkentin@vmware.com> Signed-off-by: NChris Ball <cjb@laptop.org>
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由 Adrian Hunter 提交于
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: NAdrian Hunter <adrian.hunter@intel.com> Signed-off-by: NChris Ball <cjb@laptop.org>
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由 Stefan Nilsson XK 提交于
Adds a quirk which can be turned on for SDIO devices that do not support 512 byte requests in byte mode during CMD53. These requests will always be sent in block mode instead. This patch also enables this quirk for ST-Ericsson CW1200 WLAN device. Signed-off-by: NStefan Nilsson XK <stefan.xk.nilsson@stericsson.com> Signed-off-by: NUlf HANSSON <ulf.hansson@stericsson.com> Acked-by: NLinus Walleij <linus.walleij@linaro.org> Signed-off-by: NChris Ball <cjb@laptop.org>
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- 21 7月, 2011 1 次提交
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由 Robert P. J. Day 提交于
Standardize the checks for multiple MMC header file inclusion, including adding comments to terminating #endif's, and fixing one incorrect comment. Signed-off-by: NRobert P. J. Day <rpjday@crashcourse.ca> Signed-off-by: NChris Ball <cjb@laptop.org>
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- 14 7月, 2011 1 次提交
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由 Philip Rakity 提交于
On reading the ext_csd for the first time (in 1 bit mode), save the ext_csd information needed for bus width compare. On every pass we make re-reading the ext_csd, compare the data against the saved ext_csd data. This fixes a regression introduced in 3.0-rc1 by 08ee80cc ("mmc: core: eMMC bus width may not work on all platforms"), which incorrectly assumed we would be re-reading the ext_csd at resume- time. Signed-off-by: NPhilip Rakity <prakity@marvell.com> Tested-by: NJaehoon Chung <jh80.chung@samsung.com> Signed-off-by: NChris Ball <cjb@laptop.org>
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- 26 5月, 2011 2 次提交
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由 Andrei Warkentin 提交于
SD cards operating at UHS104 or better support SET_BLOCK_COUNT. Signed-off-by: NAndrei Warkentin <andreiw@motorola.com> Reviewed-by: NArindam Nath <arindam.nath@amd.com> Signed-off-by: NChris Ball <cjb@laptop.org>
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由 Andrei Warkentin 提交于
CMD23-prefixed instead of open-ended multiblock transfers have a performance advantage on some MMC cards. Signed-off-by: NAndrei Warkentin <andreiw@motorola.com> Signed-off-by: NChris Ball <cjb@laptop.org>
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- 25 5月, 2011 7 次提交
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由 Andrei Warkentin 提交于
Conditional add/remove quirks for MMC and SD. Signed-off-by: NAndrei Warkentin <andreiw@motorola.com> Signed-off-by: NChris Ball <cjb@laptop.org>
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由 Stefan Nilsson XK 提交于
If there is only 1 function interrupt registered it is possible to improve performance by directly calling the irq handler and avoiding the overhead of reading the CCCR registers. Signed-off-by: NPer Forlin <per.forlin@linaro.org> Acked-by: NUlf Hansson <ulf.hansson@stericsson.com> Reviewed-by: NNicolas Pitre <nicolas.pitre@linaro.org> Signed-off-by: NChris Ball <cjb@laptop.org>
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由 Arindam Nath 提交于
Since only UHS-I cards respond with S18A set in response to ACMD41, we set the card as ultra-high-speed after successfull initialization. We need to decide whether a card is SDXC based on the C_SIZE field of CSDv2.0 register. According to Physical Layer spec v3.01, the minimum value of C_SIZE for SDXC card is 00FFFFh. Tested by Zhangfei Gao with a Toshiba uhs card and general hs card, on mmp2 in SDMA mode. Signed-off-by: NArindam Nath <arindam.nath@amd.com> Reviewed-by: NPhilip Rakity <prakity@marvell.com> Tested-by: NPhilip Rakity <prakity@marvell.com> Acked-by: NZhangfei Gao <zhangfei.gao@marvell.com> Signed-off-by: NChris Ball <cjb@laptop.org>
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由 Arindam Nath 提交于
We decide on the current limit to be set for the card based on the Capability of Host Controller to provide current at 1.8V signalling, and the maximum current limit of the card as indicated by CMD6 mode 0. We then set the current limit for the card using CMD6 mode 1. As per the Physical Layer Spec v3.01, the current limit switch is only applicable for SDR50, SDR104, and DDR50 bus speed modes. For other UHS-I modes, we set the default current limit of 200mA. Tested by Zhangfei Gao with a Toshiba uhs card and general hs card, on mmp2 in SDMA mode. Signed-off-by: NArindam Nath <arindam.nath@amd.com> Reviewed-by: NPhilip Rakity <prakity@marvell.com> Tested-by: NPhilip Rakity <prakity@marvell.com> Acked-by: NZhangfei Gao <zhangfei.gao@marvell.com> Signed-off-by: NChris Ball <cjb@laptop.org>
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由 Arindam Nath 提交于
This patch adds support for setting UHS-I bus speed mode during UHS-I initialization procedure. Since both the host and card can support more than one bus speed, we select the highest speed based on both of their capabilities. First we set the bus speed mode for the card using CMD6 mode 1, and then we program the host controller to support the required speed mode. We also set High Speed Enable in case one of the UHS-I modes is selected. We take care to reset SD clock before setting UHS mode in the Host Control2 register, and then re-enable it as per the Host Controller spec v3.00. We then set the clock frequency for the UHS-I mode selected. Tested by Zhangfei Gao with a Toshiba uhs card and general hs card, on mmp2 in SDMA mode. Signed-off-by: NArindam Nath <arindam.nath@amd.com> Reviewed-by: NPhilip Rakity <prakity@marvell.com> Tested-by: NPhilip Rakity <prakity@marvell.com> Acked-by: NZhangfei Gao <zhangfei.gao@marvell.com> Signed-off-by: NChris Ball <cjb@laptop.org>
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由 Arindam Nath 提交于
This patch adds support for setting driver strength during UHS-I initialization procedure. Since UHS-I cards set S18A (bit 24) in response to ACMD41, we use this as a base for UHS-I initialization. We modify the parameter list of mmc_sd_get_cid() so that we can save the ROCR from ACMD41 to check whether bit 24 is set. We decide whether the Host Controller supports A, C, or D driver type depending on the Capabilities register. Driver type B is suported by default. We then set the appropriate driver type for the card using CMD6 mode 1. As per Host Controller spec v3.00, we set driver type for the host only if Preset Value Enable in the Host Control2 register is not set. SDHCI_HOST_CONTROL has been renamed to SDHCI_HOST_CONTROL1 to conform to the spec. Tested by Zhangfei Gao with a Toshiba uhs card and general hs card, on mmp2 in SDMA mode. Signed-off-by: NArindam Nath <arindam.nath@amd.com> Reviewed-by: NPhilip Rakity <prakity@marvell.com> Tested-by: NPhilip Rakity <prakity@marvell.com> Acked-by: NZhangfei Gao <zhangfei.gao@marvell.com> Signed-off-by: NChris Ball <cjb@laptop.org>
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由 Arindam Nath 提交于
SD cards which conform to Physical Layer Spec v3.01 can support additional Bus Speed Modes, Driver Strength, and Current Limit other than the default values. We use CMD6 mode 0 to read these additional card functions. The values read here will be used during UHS-I initialization steps. Tested by Zhangfei Gao with a Toshiba uhs card and general hs card, on mmp2 in SDMA mode. Signed-off-by: NArindam Nath <arindam.nath@amd.com> Reviewed-by: NPhilip Rakity <prakity@marvell.com> Tested-by: NPhilip Rakity <prakity@marvell.com> Acked-by: NZhangfei Gao <zhangfei.gao@marvell.com> Signed-off-by: NChris Ball <cjb@laptop.org>
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