| Commit message (Collapse) | Author | Age | Files | Lines |
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Pull MMC updates from Ulf Hansson:
"MMC core:
- Add support to enable irq wake for slot gpio
- Remove MMC_CAP2_HC_ERASE_SZ and make it the default behaviour
- Improve R1 response error checks for stop commands
- Cleanup and clarify some MMC specific code
- Keep card runtime resumed while adding SDIO function devices
- Use device_property_read instead of of_property_read in mmc_of_parse()
- Move boot partition locking into a driver op to enable proper I/O scheduling
- Move multi/single-ioctl() to use block layer to enable proper I/O scheduling
- Delete bounce buffer Kconfig option
- Improve the eMMC HW reset support provided via the eMMC pwrseq
- Add host API to manage SDIO IRQs from a workqueue
MMC host:
- dw_mmc: Drop support for multiple slots
- dw_mmc: Use device_property_read instead of of_property_read
- dw_mmc-rockchip: Optional improved tuning to greatly decrease tuning time
- dw_mmc: Prevent rpm suspend for SDIO IRQs instead of always for SDIO cards
- dw_mmc: Convert to use MMC_CAP2_SDIO_IRQ_NOTHREAD for SDIO IRQs
- omap_hsmmc: Convert to mmc regulator APIs to consolidate code
- omap_hsmmc: Deprecate "vmmc_aux" in DT and use "vqmmc" instead
- tmio: make sure SDIO gets reinitialized after resume
- sdhi: add CMD23 support to R-Car Gen2 & Gen3
- tmio: add CMD23 support
- sdhi/tmio: Refactor code and rename files to simplify Kconfig options
- sdhci-pci: Enable card detect wake for Intel BYT-related SD controllers
- sdhci-pci: Add support for Intel CNP
- sdhci-esdhc-imx: Remove ENGcm07207 workaround - allow multi block transfers
- sdhci-esdhc-imx: Allow all supported prescaler values
- sdhci-esdhc-imx: Fix DAT line software reset
- sdhci-esdhc: Add SDHCI_QUIRK_32BIT_DMA_ADDR
- atmel-mci: Drop AVR32 support"
* tag 'mmc-v4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: (86 commits)
mmc: dw_mmc: remove the unnecessary slot variable
mmc: dw_mmc: use the 'slot' instead of 'cur_slot'
mmc: dw_mmc: remove the 'id' arguments about functions relevant to slot
mmc: dw_mmc: change the array of slots
mmc: dw_mmc: remove the loop about finding slots
mmc: dw_mmc: deprecated the "num-slots" property
mmc: dw_mmc-rockchip: parse rockchip, desired-num-phases from DT
dt-bindings: rockchip-dw-mshc: add optional rockchip, desired-num-phases
mmc: renesas-sdhi: improve checkpatch cleanness
mmc: tmio: improve checkpatch cleanness
mmc: sdhci-pci: Enable card detect wake for Intel BYT-related SD controllers
mmc: slot-gpio: Add support to enable irq wake on cd_irq
mmc: core: Remove MMC_CAP2_HC_ERASE_SZ
mmc: core: for data errors, take response of stop cmd into account
mmc: core: check also R1 response for stop commands
mmc: core: Clarify code for sending CSD
mmc: core: Drop mmc_all_send_cid() and use mmc_send_cxd_native() instead
mmc: core: Re-factor code for sending CID
mmc: core: Remove redundant code in mmc_send_cid()
mmc: core: Make mmc_can_reset() static
...
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Just as we can use blk_mq_rq_from_pdu() to get the per-request
tag we can use blk_mq_rq_to_pdu() to get a request from a tag.
Introduce a static inline helper so we are on the clear what
is happening.
Suggested-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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The mmc_queue_req is a per-request state container the MMC core uses
to carry bounce buffers, pointers to asynchronous requests and so on.
Currently allocated as a static array of objects, then as a request
comes in, a mmc_queue_req is assigned to it, and used during the
lifetime of the request.
This is backwards compared to how other block layer drivers work:
they usally let the block core provide a per-request struct that get
allocated right beind the struct request, and which can be obtained
using the blk_mq_rq_to_pdu() helper. (The _mq_ infix in this function
name is misleading: it is used by both the old and the MQ block
layer.)
The per-request struct gets allocated to the size stored in the queue
variable .cmd_size initialized using the .init_rq_fn() and
cleaned up using .exit_rq_fn().
The block layer code makes the MMC core rely on this mechanism to
allocate the per-request mmc_queue_req state container.
Doing this make a lot of complicated queue handling go away. We only
need to keep the .qnct that keeps count of how many request are
currently being processed by the MMC layer. The MQ block layer will
replace also this once we transition to it.
Doing this refactoring is necessary to move the ioctl() operations
into custom block layer requests tagged with REQ_OP_DRV_[IN|OUT]
instead of the custom code using the BigMMCHostLock that we have
today: those require that per-request data be obtainable easily from
a request after creating a custom request with e.g.:
struct request *rq = blk_get_request(q, REQ_OP_DRV_IN, __GFP_RECLAIM);
struct mmc_queue_req *mq_rq = req_to_mq_rq(rq);
And this is not possible with the current construction, as the request
is not immediately assigned the per-request state container, but
instead it gets assigned when the request finally enters the MMC
queue, which is way too late for custom requests.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
[Ulf: Folded in the fix to drop a call to blk_cleanup_queue()]
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Tested-by: Heiner Kallweit <hkallweit1@gmail.com>
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This option is activated by all multiplatform configs and what
not so we almost always have it turned on, and the memory it
saves is negligible, even more so moving forward. The actual
bounce buffer only gets allocated only when used, the only
thing the ifdefs are saving is a little bit of code.
It is highly improper to have this as a Kconfig option that
get turned on by Kconfig, make this a pure runtime-thing and
let the host decide whether we use bounce buffers. We add a
new property "disable_bounce" to the host struct.
Notice that mmc_queue_calc_bouncesz() already disables the
bounce buffers if host->max_segs != 1, so any arch that has a
maximum number of segments higher than 1 will have bounce
buffers disabled.
The option CONFIG_MMC_BLOCK_BOUNCE is default y so the
majority of platforms in the kernel already have it on, and
it then gets turned off at runtime since most of these have
a host->max_segs > 1. The few exceptions that have
host->max_segs == 1 and still turn off the bounce buffering
are those that disable it in their defconfig.
Those are the following:
arch/arm/configs/colibri_pxa300_defconfig
arch/arm/configs/zeus_defconfig
- Uses MMC_PXA, drivers/mmc/host/pxamci.c
- Sets host->max_segs = NR_SG, which is 1
- This needs its bounce buffer deactivated so we set
host->disable_bounce to true in the host driver
arch/arm/configs/davinci_all_defconfig
- Uses MMC_DAVINCI, drivers/mmc/host/davinci_mmc.c
- This driver sets host->max_segs to MAX_NR_SG, which is 16
- That means this driver anyways disabled bounce buffers
- No special action needed for this platform
arch/arm/configs/lpc32xx_defconfig
arch/arm/configs/nhk8815_defconfig
arch/arm/configs/u300_defconfig
- Uses MMC_ARMMMCI, drivers/mmc/host/mmci.[c|h]
- This driver by default sets host->max_segs to NR_SG,
which is 128, unless a DMA engine is used, and in that case
the number of segments are also > 1
- That means this driver already disables bounce buffers
- No special action needed for these platforms
arch/arm/configs/sama5_defconfig
- Uses MMC_SDHCI, MMC_SDHCI_PLTFM, MMC_SDHCI_OF_AT91, MMC_ATMELMCI
- Uses drivers/mmc/host/sdhci.c
- Normally sets host->max_segs to SDHCI_MAX_SEGS which is 128 and
thus disables bounce buffers
- Sets host->max_segs to 1 if SDHCI_USE_SDMA is set
- SDHCI_USE_SDMA is only set by SDHCI on PCI adapers
- That means that for this platform bounce buffers are already
disabled at runtime
- No special action needed for this platform
arch/blackfin/configs/CM-BF533_defconfig
arch/blackfin/configs/CM-BF537E_defconfig
- Uses MMC_SPI (a simple MMC card connected on SPI pins)
- Uses drivers/mmc/host/mmc_spi.c
- Sets host->max_segs to MMC_SPI_BLOCKSATONCE which is 128
- That means this platform already disables bounce buffers at
runtime
- No special action needed for these platforms
arch/mips/configs/cavium_octeon_defconfig
- Uses MMC_CAVIUM_OCTEON, drivers/mmc/host/cavium.c
- Sets host->max_segs to 16 or 1
- Setting host->disable_bounce to be sure for the 1 case
arch/mips/configs/qi_lb60_defconfig
- Uses MMC_JZ4740, drivers/mmc/host/jz4740_mmc.c
- This sets host->max_segs to 128 so bounce buffers are
already runtime disabled
- No action needed for this platform
It would be interesting to come up with a list of the platforms
that actually end up using bounce buffers. I have not been
able to infer such a list, but it occurs when
host->max_segs == 1 and the bounce buffering is not explicitly
disabled.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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BLK_BOUNCE_ANY is the defauly now, so the call is superflous.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Currently we use nornal Linux errno values in the block layer, and while
we accept any error a few have overloaded magic meanings. This patch
instead introduces a new blk_status_t value that holds block layer specific
status codes and explicitly explains their meaning. Helpers to convert from
and to the previous special meanings are provided for now, but I suspect
we want to get rid of them in the long run - those drivers that have a
errno input (e.g. networking) usually get errnos that don't know about
the special block layer overloads, and similarly returning them to userspace
will usually return somethings that strictly speaking isn't correct
for file system operations, but that's left as an exercise for later.
For now the set of errors is a very limited set that closely corresponds
to the previous overloaded errno values, but there is some low hanging
fruite to improve it.
blk_status_t (ab)uses the sparse __bitwise annotations to allow for sparse
typechecking, so that we can easily catch places passing the wrong values.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
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Pull MMC updates from Ulf Hansson:
"MMC core:
- Continue to re-factor code to prepare for eMMC CMDQ and blkmq support
- Introduce queue semantics to prepare for eMMC CMDQ and blkmq support
- Add helper functions to manage temporary enable/disable of eMMC CMDQ
- Improve wait-busy detection for SDIO
MMC host:
- cavium: Add driver to support Cavium controllers
- cavium: Extend Cavium driver to support Octeon and ThunderX SOCs
- bcm2835: Add new driver for Broadcom BCM2835 controller
- sdhci-xenon: Add driver to support Marvell Xenon SDHCI controller
- sdhci-tegra: Add support for the Tegra186 variant
- sdhci-of-esdhc: Support for UHS-I SD cards
- sdhci-of-esdhc: Support for eMMC HS200 cards
- sdhci-cadence: Add eMMC HS400 enhanced strobe support
- sdhci-esdhc-imx: Reset tuning circuit when needed
- sdhci-pci: Modernize and clean-up some PM related code
- sdhci-pci: Avoid re-tuning at runtime PM for some Intel devices
- sdhci-pci|acpi: Use aggressive PM for some Intel BYT controllers
- sdhci: Re-factoring and modernizations
- sdhci: Optimize delay loops
- sdhci: Improve register dump print format
- sdhci: Add support for the Command Queue Engine
- meson-gx: Various improvements and clean-ups
- meson-gx: Add support for CMD23
- meson-gx: Basic tuning support to avoid CRC errors
- s3cmci: Enable probing via DT
- mediatek: Improve tuning support for eMMC HS200 and HS400 mode
- tmio: Improve DMA support
- tmio: Use correct response for CMD12
- dw_mmc: Minor improvements and clean-ups"
* tag 'mmc-v4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: (148 commits)
mmc: sdhci-of-esdhc: limit SD clock for ls1012a/ls1046a
mmc: sdhci-of-esdhc: poll ESDHC_CLOCK_STABLE bit with udelay
mmc: sdhci-xenon: Fix default value of LOGIC_TIMING_ADJUST for eMMC5.0 PHY
mmc: sdhci-xenon: Fix the work flow in xenon_remove().
MIPS: Octeon: cavium_octeon_defconfig: Enable Octeon MMC
mmc: sdhci-xenon: Remove redundant dev_err call in get_dt_pad_ctrl_data()
mmc: cavium: Use module_pci_driver to simplify the code
mmc: cavium: Add MMC support for Octeon SOCs.
mmc: cavium: Fix detection of block or byte addressing.
mmc: core: Export API to allow hosts to get the card address
mmc: sdio: Fix sdio wait busy implement limitation
mmc: sdhci-esdhc-imx: reset tuning circuit when power on mmc card
clk: apn806: fix spelling mistake: "mising" -> "missing"
mmc: sdhci-of-esdhc: add delay between tuning cycles
mmc: sdhci: Control the delay between tuning commands
mmc: sdhci-of-esdhc: add tuning support
mmc: sdhci-of-esdhc: add support for signal voltage switch
mmc: sdhci-of-esdhc: add peripheral clock support
mmc: sdhci-pci: Allow for 3 bytes from Intel DSM
mmc: cavium: Fix a shift wrapping bug
...
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eMMC can have multiple internal partitions that are represented as separate
disks / queues. However switching between partitions is only done when the
queue is empty. Consequently the array of mmc requests that are queued can
be shared between partitions saving memory.
Keep a pointer to the mmc request queue on the card, and use that instead
of allocating a new one for each partition.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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Change from viewing the requests in progress as 'current' and 'previous',
to viewing them as a queue. The current request is allocated to the first
free slot. The presence of incomplete requests is determined from the
count (mq->qcnt) of entries in the queue. Non-read-write requests (i.e.
discards and flushes) are not added to the queue at all and require no
special handling. Also no special handling is needed for the
MMC_BLK_NEW_REQUEST case.
As well as allowing an arbitrarily sized queue, the queue thread function
is significantly simpler.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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mmc only supports discarding on large alignments, so the zeroing code
would always fall back to explicit writings of zeroes.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
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Pull MMC updates from Ulf Hansson:
"MMC core:
- Add support for Marvell SD8787 Wifi/BT chip
- Improve UHS support for SDIO
- Invent MMC_CAP_3_3V_DDR and a DT binding for eMMC DDR 3.3V mode
- Detect Auto BKOPS enable bit
- Export eMMC device lifetime information through sysfs
- First take to slim down the public mmc headers to avoid abuse
- Re-factoring of the mmc block device driver to prepare for blkmq
- Cleanup code for the mmc block device driver
- Clarify and cleanup code dealing with data requests
- Cleanup some code by converting to ida_simple_ functions
- Cleanup code dealing with card quirks
- Cleanup private and public mmc header files
MMC host:
- Don't rely on public mmc headers to include non-mmc related headers
- meson: Add support for eMMC HS400 mode
- meson: Various cleanups and improvements
- omap_hsmmc: Use the proper provided busy timeout from the core
- sunxi: Enable new timings for the A64 MMC controllers
- sunxi: Improvements for clock management
- tmio: Improvements for SDIO interrupts
- mxs-mmc: Add CMD23 support
- sdhci-msm: Enable HS400 enhanced strobe mode support
- sdhci-msm: Correct HS400 tuning sequence
- sdhci-acpi: Support deferred probe
- sdhci-pci: Add support for eMMC HS200 tuning mode on AMD
- mediatek: Correct the implementation of card busy detection
- dw_mmc: Initial support for ZX mmc controller
- sh_mobile_sdhi: Enable support for eMMC HS200 mode
- sh_mmcif: Various cleanups and improvements"
* tag 'mmc-v4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: (145 commits)
mmc: core: add mmc prefix for blk_fixups
mmc: core: move all quirks together into quirks.h
mmc: core: improve the quirks for sdio devices
mmc: core: move some sdio IDs out of quirks file
mmc: core: change quirks.c to be a header file
mmc: sdhci-cadence: fix bit shift of read data from PHY port
mmc: Adding AUTO_BKOPS_EN bit set for Auto BKOPS support
mmc: MAN_BKOPS_EN inverse debug message logic
mmc: meson-gx: add support for HS400 mode
mmc: meson-gx: remove unneeded checks in remove
mmc: meson-gx: reduce bounce buffer size
mmc: meson-gx: set max block count and request size
mmc: meson-gx: improve interrupt handling
mmc: meson-gx: improve meson_mmc_irq_thread
mmc: meson-gx: improve meson_mmc_clk_set
mmc: meson-gx: minor improvements in meson_mmc_set_ios
mmc: meson: Assign the minimum clk rate as close to 400KHz as possible
mmc: core: start to break apart mmc_start_areq()
mmc: block: respect bool returned from blk_end_request()
mmc: block: return errorcode from mmc_sd_num_wr_blocks()
...
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Instead of masking and setting two bits in the "flags" field
for the mmc_queue, just use two bools named "suspended" and
"new_request".
The masking and setting would likely have race conditions
anyways, it is better to use a simple member like this.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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A significant amount of functions and other definitions are available
through the public mmc card.h header file. Let's slim down this public mmc
interface, as to prevent users from abusing it, by moving some of the
functions/definitions to private mmc header files.
This change concentrates on moving the functions into private mmc headers,
following changes may continue with additional clean-ups.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com>
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A significant amount of functions are available through the public mmc
core.h header file. Let's slim down this public mmc interface, as to
prevent users from abusing it, by moving some of the functions to private
mmc header files.
This change concentrates on moving the functions into private mmc headers,
following changes may continue with additional clean-ups, as an example
some functions can be turned into static.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com>
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* A multiplication for the size determination of a memory allocation
indicated that an array data structure should be processed.
Thus use the corresponding function "kmalloc_array".
This issue was detected by using the Coccinelle software.
* Replace the specification of a data structure by a pointer dereference
to make the corresponding size determination a bit safer according to
the Linux coding style convention.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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The block layer won't send requests the driver isn't asking for,
so remove this check.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Pull another MMC update from Ulf Hansson:
"Here's a second pull request for MMC for v4.10.
As a matter of fact it's only one change that moves some mmc files
around. I thought it was a good idea to get this into v4.10, as it
gives us a nice and fresh base for v4.11. Summary:
MMC core:
- Move files from the card directory to the core directory to enable
future clean-ups of the generic mmc header files and interfaces"
* tag 'mmc-v4.10-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
mmc: block: Move files to core
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Once upon a time it made sense to keep the mmc block device driver and its
related code, in its own directory called card. Over time, more an more
functions/structures have become shared through generic mmc header files,
between the core and the card directory. In other words, the relationship
between them has become closer.
By sharing functions/structures via generic header files, it becomes easy
for outside users to abuse them. In a way to avoid that from happen, let's
move the files from card directory into the core directory, as it enables
us to move definitions of functions/structures into mmc core specific
header files.
Note, this is only the first step in providing a cleaner mmc interface for
outside users. Following changes will do the actual cleanup, as that is not
part of this change.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
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