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2016-03-22mmc: new request notification unit-testLee Susman
The new request notification test checks the following scenario: A new request arrives after a NULL request was sent to the mmc_queue, which is waiting for completion of a former request. Change-Id: I05db0959ded400e292eb5e84e1ecfc579b78ee62 Signed-off-by: Konstantin Dorfman <kdorfman@codeaurora.org> Signed-off-by: Lee Susman <lsusman@codeaurora.org> [merez@codeaurora.org: fixed conflicts due to removal of BKOPS tests] Signed-off-by: Maya Erez <merez@codeaurora.org> [venkatg@codeaurora.org: Drop changes to mmc_block_test.c] Signed-off-by: Venkat Gopalakrishnan <venkatg@codeaurora.org>
2016-03-22mmc: Enable eMMC unit-testsMaya Erez
Enable the compilation of eMMC4.5 unit-tests, required by APT team. This will allow the APT team to test the storage activity on released builds. The storage tests are disabled in normal operation and in order to activate them a test I/O scheduler should be chosen and the test should be triggered via debugfs. Therefore they have no effect on normal eMMC driver operation. Change-Id: I179c567f67cc8fab9ed1edab8246483de18bc76a Signed-off-by: Maya Erez <merez@codeaurora.org> [venkatg@codeaurora.org: Fixed trivial merge conflict] Signed-off-by: Venkat Gopalakrishnan <venkatg@codeaurora.org>
2016-02-24Revert "mmc: Extend wakelock if bus is dead"Dmitry Shmidt
This reverts commit dde72f9e313fc52d467ef0aad41cecd2c9f9f212.
2016-02-24Revert "mmc: core: Hold a wake lock accross delayed work + mmc rescan"Dmitry Shmidt
Patch mmc: core: Signal wakeup event at card insert/removal provides wake lock for mmc_detect_change() This reverts commit bec7bcbb707d10b80d450f6f02384efeff294799.
2016-02-22ANDROID: mmc: move to a SCHED_FIFO threadTim Murray
(cherry picked from commit 011e507b413393eab8279dac8b778ad9b6e9971b) Running mmcqd as a prio 120 thread forces it to compete with standard user processes for IO performance, especially when the system is under severe CPU load. Move it to a SCHED_FIFO thread to reduce the impact of load on IO performance. Signed-off-by: Tim Murray <timmurray@google.com> Bug: 25392275 Change-Id: I1edfe73baa25e181367c30c1f40fee886e92b60d
2016-02-16mmc: Add tracepoints of mmc block operationsKen Sumrall
Add tracepoints to record the start and end of each mmc block operation. This includes read, write, erase, secure erase, trim, secure trim1 and secure trim 2, discard and sanitize commands. Change-Id: Ic5d1cbdb9adb940d8b1a2a13c73970023575df50 Signed-off-by: Ken Sumrall <ksumrall@android.com>
2016-02-16Revert "mmc: block: don't use parameter prefix if built as module"Ulf Hansson
This reverts commit 829b6962f7e3cfc06f7c5c26269fd47ad48cf503. Revert this change as it causes a sysfs path to change and therefore introduces and ABI regression. More precisely Android's vold is not being able to access /sys/module/mmcblk/parameters/perdev_minors any more, since the path becomes changed to: "/sys/module/mmc_block/..." Fixes: 829b6962f7e3 ("mmc: block: don't use parameter prefix if built as module") Reported-by: John Stultz <john.stultz@linaro.org> Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: John Stultz <john.stultz@linaro.org>
2016-02-16mmc: core: Remove stray CONFIG_EXPERIMENTAL dependenciesJohn Stultz
CONFIG_EXPERIMENTAL has been removed from the kernel, so clean up its use in MMC_EMBEDDED_SDIO and MMC_PARANOID_SD_INIT options. Change-Id: If414c265134b36740a84564274a631803c8e81b4 Cc: Arve Hjønnevåg <arve@android.com> Cc: San Mehat <san@google.com> Cc: Android Kernel Team <kernel-team@android.com> Reported-by: Jon Medhurst (Tixy) <tixy@linaro.org> Signed-off-by: John Stultz <john.stultz@linaro.org>
2016-02-16mmc: block: Improve logging of handling emmc timeoutsKen Sumrall
Add some logging to make it clear just how the emmc timeout was handled. Change-Id: Id33fd28d8b9778dc4e85db829e2637a328eddab4 Signed-off-by: Ken Sumrall <ksumrall@android.com>
2016-02-16mmc: Add "ignore mmc pm notify" functionalityDmitry Shmidt
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
2016-02-16mmc: sdio: Fix sdio_reset_comm for syncHosung Kim
mmc_sdio_init_card function is doing necessary initialization Change-Id: I7d2e432b2af8a76267378acba07e3e4e8fd1e6bc Signed-off-by: Hosung Kim <hosung0.kim@samsung.com>
2016-02-16mmc: sdio: fix sdio_reset_comm() voltage selectionColin Cross
Change-Id: I2fa35ee9291c4c60e55fc11d923ae686a8f81920 Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
2016-02-16mmc: sdio: Fix enable_hs and enable_wide in sdio_reset_comm()Dmitry Shmidt
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
2016-02-16mmc: sdio: Add high speed support to sdio_reset_comm()Daniel Chen
Signed-off-by: San Mehat <san@google.com>
2016-02-16mmc: sdio: Claim host in sdio_reset_comm()Dmitry Shmidt
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
2016-02-16mmc: Add new API call 'sdio_reset_comm' for resetting communication with an ↵San Mehat
SDIO device Signed-off-by: San Mehat <san@android.com>
2016-02-16mmc: Add sdio_readb_ext() functionDmitry Shmidt
Change-Id: I9b410c8a13724795b23764012fd3be8f53747299
2016-02-16mmc: Extend wakelock if bus is deadJohn Stultz
This patch sets extend_wakelock if the host's bus is marked dead due to card removal. This change was originally made in bc4dc52f178828 (mmc: mmcblk: Add support for deferred SD bus resume), which was reverted due to the majority of the patch no longer building or making sense. However one small part of that patch ought to be saved. Signed-off-by: John Stultz <john.stultz@linaro.org>
2016-02-16mmc: core: Hold a wake lock accross delayed work + mmc rescanSan Mehat
Signed-off-by: San Mehat <san@android.com> mmc: core: Rework mmc_delayed_work wakelock so that the wakelock is only extended if a card is added or removed. Signed-off-by: San Mehat <san@google.com>
2016-02-16mmc: Add concept of an 'embedded' SDIO device.San Mehat
This is required to support chips which use SDIO for signaling/ communication but do not implement the various card enumeration registers as required for full SD / SDIO cards. mmc: sdio: Fix bug where we're freeing the CIS tables we never allocated when using EMBEDDED_SDIO mmc: Add max_blksize to embedded SDIO data Change-Id: Ibff2e3e991e5522f55ec8c6edc25ed09f2553736 Signed-off-by: San Mehat <san@google.com>
2016-02-16mmc: sd: Add retries in re-detectionSan Mehat
Signed-off-by: San Mehat <san@android.com> mmc: sd: Remove debugging printk Signed-off-by: Dima Zavin <dima@android.com>
2016-02-16mmc: sd: When resuming, try a little harder to init the cardSan Mehat
Signed-off-by: San Mehat <san@android.com>
2016-02-16mmc: sd: Add new CONFIG_MMC_PARANOID_SD_INIT for enabling retries during SD ↵San Mehat
detection Signed-off-by: San Mehat <san@google.com>
2016-02-16mmc_block: Allow more than 8 partitions per cardColin Cross
Set the GENHD_FL_EXT_DEVT flag, which will allocate minor numbers in major 259 for partitions past disk->minors. Also remove the use of disk_devt to determine devidx from md->disk. md->disk->first_minor is always initialized from devidx and can always be used to recover it. Signed-off-by: Colin Cross <ccross@android.com>
2015-11-09mmc: remove bondage between REQ_META and reliable writeLuca Porzio
Anytime a write operation is performed with Reliable Write flag enabled, the eMMC device is enforced to bypass the cache and do a write to the underling NVM device by Jedec specification; this causes a performance penalty since write operations can't be optimized by the device cache. In our tests, we replayed a typical mobile daily trace pattern and found ~9% overall time reduction in trace replay by using this patch. Also the write ops within 4KB~64KB chunk size range get a 40~60% performance improvement by using the patch (as this range of write chunks are the ones affected by REQ_META). This patch has been discussed in the Mobile & Embedded Linux Storage Forum and it's the results of feedbacks from many people. We also checked with fsdevl and f2fs mailing list developers that this change in the usage of REQ_META is not affecting FS behavior and we got positive feedbacks. Reporting here the feedbacks: http://comments.gmane.org/gmane.linux.file-systems/97219 http://thread.gmane.org/gmane.linux.file-systems.f2fs/3178/focus=3183 Signed-off-by: Bruce Ford <bford@micron.com> Signed-off-by: Luca Porzio <lporzio@micron.com> Fixes: ce39f9d17c14 ("mmc: support packed write command for eMMC4.5 devices") Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2015-11-09mmc: MMC_GOLDFISH should depend on HAS_DMAGeert Uytterhoeven
If NO_DMA=y: ERROR: dma_unmap_sg [drivers/mmc/host/android-goldfish.ko] undefined! ERROR: dma_alloc_coherent [drivers/mmc/host/android-goldfish.ko] undefined! ERROR: dma_map_sg [drivers/mmc/host/android-goldfish.ko] undefined! ERROR: dma_free_coherent [drivers/mmc/host/android-goldfish.ko] undefined! Add a dependency on HAS_DMA to fix this. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2015-11-09mmc: mediatek: Preinitialize delay_phase in get_best_delay()Geert Uytterhoeven
drivers/mmc/host/mtk-sd.c: In function ‘get_best_delay’: drivers/mmc/host/mtk-sd.c:1284: warning: ‘delay_phase.start’ is used uninitialized in this function drivers/mmc/host/mtk-sd.c:1284: warning: ‘delay_phase.maxlen’ is used uninitialized in this function If delay is zero, these fields are indeed not initialized. Let the compiler preinitialize the whole struct to fix this. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2015-11-09mmc: mmc: Improve reliability of mmc_select_hs400()Adrian Hunter
mmc_select_hs400() calls __mmc_switch() which checks the switch is successful using CMD13 (SEND_STATUS). The problem is that it does that using the timing settings of the previous mode. That is prone to error, especially when switching from HS to HS400 because the timing parameters for HS mode are tighter than the timing parameters for HS400 mode. In the case when CMD13 polling is used (i.e. not MMC_CAP_WAIT_WHILE_BUSY) with the switch command, it must be assumed that using different modes on the card and host must work. However in the case when CMD13 polling is not used (i.e. MMC_CAP_WAIT_WHILE_BUSY) mmc_select_hs400() can be made more reliable by setting the host to the correct timing before sending CMD13. This patch does that. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: <stable@vger.kernel.org> # 4.2+ Tested-by: Alim Akhtar <alim.akhtar@samsung.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2015-11-09mmc: mmc: Move mmc_switch_status()Adrian Hunter
Move the mmc_switch_status() function in preparation for calling it in mmc_select_hs400(). Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: <stable@vger.kernel.org> # 4.2+ Tested-by: Alim Akhtar <alim.akhtar@samsung.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2015-11-09mmc: mmc: Fix HS setting in mmc_select_hs400()Adrian Hunter
mmc_select_hs400() begins with the card and host in HS200 mode. Therefore, any commands sent to the card should use HS200 timing. It is incorrect to set the host to High Speed (HS) timing before sending the switch command. Doing so is unreliable because the timing parameters for HS mode are tighter than the timing parameters for HS200 mode. Thus the HS timings should be set only after the card has switched mode. However, it is not unreasonable first to reduce the frequency to the HS mode frequency, which should make the switch command and subsequent CMD13 commands more reliable. This patch does that. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: <stable@vger.kernel.org> # 4.2+ Tested-by: Alim Akhtar <alim.akhtar@samsung.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2015-11-09mmc: mmc: Improve reliability of mmc_select_hs200()Adrian Hunter
Currently mmc_select_hs200() uses __mmc_switch() which checks the success of the switch to HS200 mode using CMD13 (SEND_STATUS). The problem is that it does that using the timing settings of legacy mode. That is prone to error, not least because the timing parameters for legacy mode are tighter than the timing parameters for HS200 mode. In the case when CMD13 polling is used (i.e. not MMC_CAP_WAIT_WHILE_BUSY) with the switch command, it must be assumed that using different modes on the card and host must work. However in the case when CMD13 polling is not used (i.e. MMC_CAP_WAIT_WHILE_BUSY) mmc_select_hs200() can be made more reliable by setting the host to the correct timing before sending CMD13. This patch does that. A complication is that the caller, mmc_select_timing(), will ignore a switch error (indicated by -EBADMSG), assume the old mode is valid and continue, so the old timing must be restored in that case. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: <stable@vger.kernel.org> # 4.2+ Tested-by: Alim Akhtar <alim.akhtar@samsung.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2015-11-09mmc: pxamci: fix read-only gpio detection polarityRobert Jarzmik
The commit converting pxamci to slot-gpio API inverted the logic of the read-only gpio. Fix it by inverting the logic again. Fixes: fd546ee6a7dc ("mmc: pxamci: fix card detect with slot-gpio API") Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr> Cc: stable@vger.kernel.org Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2015-11-05Merge tag 'spi-v4.4' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi Pull spi updates from Mark Brown: "Quite a lot of activity in SPI this cycle, almost all of it in drivers with a few minor improvements and tweaks in the core. - Updates to pxa2xx to support Intel Broxton and multiple chip selects. - Support for big endian in the bcm63xx driver. - Multiple slave support for the mt8173 - New driver for the auxiliary SPI controller in bcm2835 SoCs. - Support for Layerscale SoCs in the Freescale DSPI driver" * tag 'spi-v4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (87 commits) spi: pxa2xx: Rework self-initiated platform data creation for non-ACPI spi: pxa2xx: Add support for Intel Broxton spi: pxa2xx: Detect number of enabled Intel LPSS SPI chip select signals spi: pxa2xx: Add output control for multiple Intel LPSS chip selects spi: pxa2xx: Use LPSS prefix for defines that are Intel LPSS specific spi: Add DSPI support for layerscape family spi: ti-qspi: improve ->remove() callback spi/spi-xilinx: Fix race condition on last word read spi: Drop owner assignment from spi_drivers spi: Add THIS_MODULE to spi_driver in SPI core spi: Setup the master controller driver before setting the chipselect spi: dw: replace magic constant by DW_SPI_DR spi: mediatek: mt8173 spi multiple devices support spi: mediatek: handle controller_data in mtk_spi_setup spi: mediatek: remove mtk_spi_config spi: mediatek: Update document devicetree bindings to support multiple devices spi: fix kernel-doc warnings about missing return desc in spi.c spi: fix kernel-doc warnings about missing return desc in spi.h spi: pxa2xx: Align a few defines spi: pxa2xx: Save other reg_cs_ctrl bits when configuring chip select ...
2015-11-04Merge remote-tracking branches 'spi/topic/omap-100k', ↵Mark Brown
'spi/topic/omap-uwire', 'spi/topic/owner', 'spi/topic/pxa' and 'spi/topic/pxa2xx' into spi-next
2015-10-29mmc: dw_mmc: fix the wrong setting for UHS-DDR50 modeJaehoon Chung
When card is running with DDR mode, dwmmc needs to set DDR_REG bit at UHS_REG register. Before this patch, dwmmc controller doesn't consider this. If this patch is not applied, CRC or other error shoulds be occurred. Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2015-10-29mmc: dw_mmc: fix the CardThreshold boundary at CardThrCtl registerJaehoon Chung
According to DesignWare DoC file, CardThreshold bit should be bit[27:16]. So it's correct to use (0xFFF << 16), not (0x1FFF << 16). Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2015-10-29mmc: dw_mmc: NULL dereference in error messageDan Carpenter
The "host->dms->ch" pointer is NULL here so we can't use it to print the error message. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2015-10-28spi: Drop owner assignment from spi_driversAndrew F. Davis
An spi_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Andrew F. Davis <afd@ti.com> Acked-by: Jonathan Cameron <jic23@kernel.org> Signed-off-by: Mark Brown <broonie@kernel.org>
2015-10-27mmc: pwrseq: Use highest priority for eMMC restart handlerJavier Martinez Canillas
The pwrseq_emmc driver does a eMMC card reset before a system reboot to allow broken or limited ROM boot-loaders (that don't have an eMMC reset logic) to be able to read the second stage from the eMMC. But this has to be called before a system reboot handler and while most of them use the priority 128, there are other restart handlers (such as the syscon-reboot one) that use a higher priority. So, use the highest priority to make sure that the eMMC hw is reset before a system reboot. Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com> Tested-by: Markus Reichl <m.reichl@fivetechno.de> Tested-by: Anand Moon <linux.amoon@gmail.com> Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com> Tested-by: Douglas Anderson <dianders@chromium.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2015-10-27mmc: mediatek: add HS400 supportChaotian Jing
add HS400 mode and tune support Signed-off-by: Chaotian Jing <chaotian.jing@mediatek.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2015-10-27mmc: mmc: extend the mmc_send_tuning()Chaotian Jing
The mmc_execute_tuning() has already prepared the opcode, there is no need to prepare it again at mmc_send_tuning(), and, there is a BUG of mmc_send_tuning() to determine the opcode by bus width, assume eMMC was running at HS200, 4bit mode, then the mmc_send_tuning() will overwrite the opcode from CMD21 to CMD19, then got error. in addition, extend an argument of "cmd_error" to allow getting if there was cmd error when tune response. Signed-off-by: Chaotian Jing <chaotian.jing@mediatek.com> [Ulf: Rebased patch] Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2015-10-27mmc: mediatek: add implement of ops->hw_reset()Chaotian Jing
add implement of ops->hw_reset() for eMMC Signed-off-by: Chaotian Jing <chaotian.jing@mediatek.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2015-10-27mmc: mediatek: fix got GPD checksum error interrupt when data transferChaotian Jing
Even if we only use one gpd, we need alloc 2 gpd and make the gpd->next pointer to the second gpd, or may get gpd checksum error, this was checked by hardware Signed-off-by: Chaotian Jing <chaotian.jing@mediatek.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2015-10-27mmc: mediatek: change the argument "ddr" to "timing"Chaotian Jing
use the ios->timing directly is better It can reflect current timing and do settings by timing Signed-off-by: Chaotian Jing <chaotian.jing@mediatek.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2015-10-27mmc: mediatek: make cmd_ints_mask to constChaotian Jing
cmd_ints_mask and data_ints_mask are constant value, so make it to const Signed-off-by: Chaotian Jing <chaotian.jing@mediatek.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2015-10-27mmc: core: Add DT bindings for eMMC hardware reset supportChaotian Jing
Sometime only need set MMC_CAP_HW_RESET for one of MMC hosts, So set it in device tree is better. Signed-off-by: Chaotian Jing <chaotian.jing@mediatek.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2015-10-26mmc: omap_hsmmc: Enable omap_hsmmc for Keystone 2Lokesh Vutla
Enable omap_hsmmc for Keystone 2 architecture which reuses the HSMMC IP found on OMAP platforms. Signed-off-by: Franklin S Cooper Jr <fcooper@ti.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2015-10-26mmc: sdhci-acpi: Add more ACPI HIDs for Intel controllersAdrian Hunter
Add ACPI HIDs for Intel host controllers including one supporting HS400. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2015-10-26mmc: sdhci-pci: Add more PCI IDs for Intel controllersAdrian Hunter
Add PCI IDs for Intel host controllers Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2015-10-26mmc: dw_mmc: use macro for HCON register operationsShawn Lin
This patch add some macros for HCON register operations to make code more readable. Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com> Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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