Move the SCSI execution functions to use a struct for passing in optional
args. This commit adds the new struct, temporarily converts scsi_execute()
and scsi_execute_req() ands a new helper, scsi_execute_cmd(), which takes
the scsi_exec_args struct.
There should be no change in behavior. We no longer allow users to pass in
any request->rq_flags value, but they were only passing in RQF_PM which we
do support by allowing users to pass in the BLK_MQ_REQ flags used by
blk_mq_alloc_request().
Subsequent commits will convert scsi_execute() and scsi_execute_req() users
to the new helpers then remove scsi_execute() and scsi_execute_req().
Change-Id: I56d96a1c376734d623bc203b33fb62fc3b7a3202
Signed-off-by: Mike Christie <michael.christie@oracle.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: John Garry <john.g.garry@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Bug: 267974767
(cherry picked from commit d094956581)
Signed-off-by: Bart Van Assche <bvanassche@google.com>
CONFIG_SCSI_UFS_VARIABLE_SG_ENTRY_SIZE must be enabled for both
CONFIG_SCSI_UFS_EXYNOS and CONFIG_SCSI_UFS_EXYNOS_GS. Since there is
no CONFIG_SCSI_UFS_EXYNOS_GS symbol in this kernel tree, make
CONFIG_SCSI_UFS_VARIABLE_SG_ENTRY_SIZE independent of the Exynos driver.
This patch is the android14-6.1 equivalent of
https://partner-android-review.git.corp.google.com/c/kernel/common/+/2378527.
Bug: 267974767
Change-Id: I41381e1ad9c5599ba4512f6a9a2cca064bac0ee0
Signed-off-by: Bart Van Assche <bvanassche@google.com>
All UFS host controllers support DMA clustering. Hence enable DMA
clustering.
Notes:
- The max_segment_size parameter implements the 256 KiB limit for the
PRDT. The dma_boundary parameter represents a boundary that must not be
crossed by DMA scatter/gather lists. I'm not aware of any restrictions
on DMA scatter/gather lists in the UFSHCI specification other than the
256 KiB limit for the PRDT and the 32-bit address restriction for
controllers that only support 32-bits DMA. The latter restriction is
already handled by ufshcd_set_dma_mask().
- Without patch "scsi: ufs: exynos: Fix the maximum segment size", this
patch breaks support for the Exynos controller.
The history of the dma_boundary parameter in the UFS driver is as
follows:
* The initial UFS driver did not set the dma_boundary parameter.
* Commit 4dd4130a72 ("scsi: make sure all drivers set the use_clustering
flag") set the .use_clustering flag.
* Commit 4af14d113b ("scsi: remove the use_clustering flag") removed the
use_clustering flag and set the dma_boundary parameter instead.
Cc: Avri Altman <avri.altman@wdc.com>
Cc: Alim Akhtar <alim.akhtar@samsung.com>
Cc: Kiwoong Kim <kwmad.kim@samsung.com>
Change-Id: I5e002e7254146789f8bb373644f08f9b6e6dd86f
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Bug: 267974767
(cherry picked from commit 13f87983fb git://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git for-next)
Signed-off-by: Bart Van Assche <bvanassche@google.com>
Prepare for enabling DMA clustering and also for supporting PAGE_SIZE !=
4096 by declaring explicitly that the maximum segment size is 4096 bytes
for Exynos UFS host controllers. Add this code in
exynos_ufs_hce_enable_notify() such that it happens after scsi_host_alloc()
and before __scsi_init_queue() is called by the LUN scanning code.
Cc: Alim Akhtar <alim.akhtar@samsung.com>
Cc: Kiwoong Kim <kwmad.kim@samsung.com>
Change-Id: I60c24ba2f1b6610df2de775021b94543d890d640
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Tested-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Bug: 267974767
(cherry picked from commit 9a80bc5deb git://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git for-next)
Signed-off-by: Bart Van Assche <bvanassche@google.com>
Add and export two functions to enable ESI and config ESI base addresses.
The calls to these exported functions will be added by the next patch in
this series.
Change-Id: I5f16934fb2c6be9ae3977f177e443b2a83616a27
Signed-off-by: Can Guo <quic_cang@quicinc.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Bug: 267974767
(cherry picked from commit e02288e026 git://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git for-next)
Signed-off-by: Bart Van Assche <bvanassche@google.com>
As Event Specific Interrupt message format is not defined in UFSHCI JEDEC
specs, and the ESI handling highly depends on how the format is designed,
hence add a vendor specific ops such that SoC vendors can configure their
own ESI handlers. If ESI vops is not provided or returning error, go with
the legacy (central) interrupt way.
Change-Id: I55ac0ce9921476f7c21f7e370692d8bca62fd9e3
Signed-off-by: Can Guo <quic_cang@quicinc.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Bug: 267974767
(cherry picked from commit edb0db0560 git://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git for-next)
Signed-off-by: Bart Van Assche <bvanassche@google.com>
Complete CQE requests in poll. Assumption is that several poll completion
may happen in different CPUs for the same completion queue. Hence a spin
lock protection is added.
Co-developed-by: Can Guo <quic_cang@quicinc.com>
Change-Id: I82a0b84b6713e4de877e0b6f4e781b463d79c276
Signed-off-by: Can Guo <quic_cang@quicinc.com>
Signed-off-by: Asutosh Das <quic_asutoshd@quicinc.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Manivannan Sadhasivam <mani@kernel.org>
Reviewed-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Bug: 267974767
(cherry picked from commit ed975065c3 git://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git for-next)
Signed-off-by: Bart Van Assche <bvanassche@google.com>
Add support for completing requests from Completion Queue. Some host
controllers support vendor specific registers that provide a bitmap of all
CQs which have at least one completed CQE. Add this support. The MCQ
specification doesn't provide the Task Tag or its equivalent in the
Completion Queue Entry. So use an indirect method to find the Task Tag
from the Completion Queue Entry.
Co-developed-by: Can Guo <quic_cang@quicinc.com>
Change-Id: Icbe063979c8c13f92cc5117521c4b08a2b34ca2e
Signed-off-by: Can Guo <quic_cang@quicinc.com>
Signed-off-by: Asutosh Das <quic_asutoshd@quicinc.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Manivannan Sadhasivam <mani@kernel.org>
Reviewed-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Bug: 267974767
(cherry picked from commit f87b2c4182 git://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git for-next)
Signed-off-by: Bart Van Assche <bvanassche@google.com>
Add support to find the hardware queue on which the request would be
queued. Since the very first queue is to serve device commands, an offset
of 1 is added to the index of the hardware queue.
Co-developed-by: Can Guo <quic_cang@quicinc.com>
Change-Id: I96bd6ec41a21d064259b50fa63007fed538b26fd
Signed-off-by: Can Guo <quic_cang@quicinc.com>
Signed-off-by: Asutosh Das <quic_asutoshd@quicinc.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Manivannan Sadhasivam <mani@kernel.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Bug: 267974767
(cherry picked from commit 854f84e7fe git://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git for-next)
Signed-off-by: Bart Van Assche <bvanassche@google.com>
Add support to send commands using multiple submission queues in MCQ mode.
Modify the functions that use ufshcd_send_command().
Co-developed-by: Can Guo <quic_cang@quicinc.com>
Change-Id: I93fe402ba0767d54bf32f0a4d01bcaf29671c1e9
Signed-off-by: Can Guo <quic_cang@quicinc.com>
Signed-off-by: Asutosh Das <quic_asutoshd@quicinc.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Manivannan Sadhasivam <mani@kernel.org>
Reviewed-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Bug: 267974767
(cherry picked from commit 22a2d563de git://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git for-next)
Signed-off-by: Bart Van Assche <bvanassche@google.com>
Enable shared tags for MCQ. For UFS, this should not have a huge
performance impact. It however simplifies the MCQ implementation and reuses
most of the existing code in the issue and completion path. Also add
multiple queue mapping to map_queue().
Co-developed-by: Can Guo <quic_cang@quicinc.com>
Change-Id: I588af41f144fbb49f3ac867254bc7699ce6a9a8d
Signed-off-by: Can Guo <quic_cang@quicinc.com>
Signed-off-by: Asutosh Das <quic_asutoshd@quicinc.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Manivannan Sadhasivam <mani@kernel.org>
Reviewed-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Bug: 267974767
(cherry picked from commit 0d33728fc0 git://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git for-next)
Signed-off-by: Bart Van Assche <bvanassche@google.com>
Runtime and operation registers are defined per Submission and Completion
queue. The location of these registers is not defined in the spec; meaning
the offsets and stride may vary for different HC vendors. Establish the
stride, base address, and doorbell address offsets from vendor host driver
and program it.
Co-developed-by: Can Guo <quic_cang@quicinc.com>
Change-Id: I54b26b4bc49de833756d384ed6259c6ca53edc75
Signed-off-by: Can Guo <quic_cang@quicinc.com>
Signed-off-by: Asutosh Das <quic_asutoshd@quicinc.com>
Reviewed-by: Manivannan Sadhasivam <mani@kernel.org>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Bug: 267974767
(cherry picked from commit 2468da61ea git://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git for-next)
Signed-off-by: Bart Van Assche <bvanassche@google.com>
To read the bqueuedepth, the device descriptor is fetched in Single
Doorbell Mode. This allocated memory may not be enough for MCQ mode because
the number of tags supported in MCQ mode may be larger than in SDB mode.
Hence, release the memory allocated in SDB mode and allocate memory for MCQ
mode operation. Define the UFS hardware queue and Completion Queue Entry.
Co-developed-by: Can Guo <quic_cang@quicinc.com>
Change-Id: I9f49a7e292e394797482d93d674ad46cba8aba81
Signed-off-by: Can Guo <quic_cang@quicinc.com>
Signed-off-by: Asutosh Das <quic_asutoshd@quicinc.com>
Reviewed-by: Manivannan Sadhasivam <mani@kernel.org>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Bug: 267974767
(cherry picked from commit 4682abfae2 git://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git for-next)
Signed-off-by: Bart Van Assche <bvanassche@google.com>
The UFS device defines the supported queuedepth by bqueuedepth which has a
max value of 256. The HC defines MAC (Max Active Commands) that defines
the max number of commands that in flight to the UFS device. Calculate and
configure the nutrs based on both these values.
Co-developed-by: Can Guo <quic_cang@quicinc.com>
Change-Id: I988797e20eb21fd557e86eb32c7402073c6189c7
Signed-off-by: Can Guo <quic_cang@quicinc.com>
Signed-off-by: Asutosh Das <quic_asutoshd@quicinc.com>
Reviewed-by: Manivannan Sadhasivam <mani@kernel.org>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Bug: 267974767
(cherry picked from commit 7224c80687 git://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git for-next)
Signed-off-by: Bart Van Assche <bvanassche@google.com>
Multi-circular queue (MCQ) has been added in UFSHC v4.0 standard in
addition to the Single Doorbell mode. The MCQ mode supports multiple
submission and completion queues. Add support to allocate and configure
the queues. Add module parameters support to configure the queues.
Co-developed-by: Can Guo <quic_cang@quicinc.com>
Change-Id: I1f459884b1229b28097ad272194c6ee53129128c
Signed-off-by: Can Guo <quic_cang@quicinc.com>
Signed-off-by: Asutosh Das <quic_asutoshd@quicinc.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Manivannan Sadhasivam <mani@kernel.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Bug: 267974767
(cherry picked from commit 57b1c0ef89 git://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git for-next)
Signed-off-by: Bart Van Assche <bvanassche@google.com>
If MCQ support is present, enabling it after MCQ support has been
configured would require reallocating tags and memory. It would also free
up the already allocated memory in Single Doorbell Mode. So defer invoking
scsi_add_host() until MCQ is configured.
Co-developed-by: Can Guo <quic_cang@quicinc.com>
Change-Id: I667bc34d73528f50e5358016360c38343e33d589
Signed-off-by: Can Guo <quic_cang@quicinc.com>
Signed-off-by: Asutosh Das <quic_asutoshd@quicinc.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Manivannan Sadhasivam <mani@kernel.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Bug: 267974767
(cherry picked from commit 0cab4023ec git://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git for-next)
Signed-off-by: Bart Van Assche <bvanassche@google.com>
Task Tag is limited to 8 bits and this restricts the number of active I/Os
to 255. In multi-circular queue mode, this may not be enough. The
specification provides EXT_IID which can be used to increase the number of
I/Os if the UFS device and UFSHC support it. This patch adds support to
probe for EXT_IID support in UFS device and UFSHC.
Co-developed-by: Can Guo <quic_cang@quicinc.com>
Change-Id: I6f9301853c590fb635246f3225fb8577f7489b3b
Signed-off-by: Can Guo <quic_cang@quicinc.com>
Signed-off-by: Asutosh Das <quic_asutoshd@quicinc.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Reviewed-by: Manivannan Sadhasivam <mani@kernel.org>
Reviewed-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Bug: 267974767
(cherry picked from commit 6e1d850acf git://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git for-next)
Signed-off-by: Bart Van Assche <bvanassche@google.com>
In 'include/ufs/ufshcd.h' file, 'enum dma_data_direction' will be used,
which is defined in linux/dma-direction.h, however, this header file is not
included in ufshcd.h, thus causing the following compilation warning:
"warning: ‘enum dma_data_direction’ declared inside parameter list will not
be visible outside of this definition or declaration"
Fix this warning by including 'linux/dma-direction.h'.
Fixes: 6ff265fc5e ("scsi: ufs: core: bsg: Add advanced RPMB support in ufs_bsg")
Reported-by: Xiaosen He <quic_xiaosenh@quicinc.com>
Reported-by: Bart Van Assche <bvanassche@acm.org>
Change-Id: I82d66b5cfb2c16912d74b2ed1f7315d811e3e3ce
Signed-off-by: Bean Huo <beanhuo@micron.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Bug: 267974767
(cherry picked from commit f3e57da528 git://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git for-next)
Signed-off-by: Bart Van Assche <bvanassche@google.com>
Compilation complains that two possible variables are used without
initialization:
drivers/ufs/core/ufs_bsg.c:112:6: warning: variable 'sg_cnt' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized]
drivers/ufs/core/ufs_bsg.c:112:6: warning: variable 'sg_list' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized]
Fix both warnings by adding initialization with sg_cnt = 0, sg_list = NULL.
Fixes: 6ff265fc5e ("scsi: ufs: core: bsg: Add advanced RPMB support in ufs_bsg")
Change-Id: I6b53eb42ee00f2ea16d352dc75eb3d9dee2890b3
Signed-off-by: Bean Huo <beanhuo@micron.com>
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Xiaosen He <quic_xiaosenh@quicinc.com>
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Bug: 267974767
(cherry picked from commit 5e87c51f18 git://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git for-next)
Signed-off-by: Bart Van Assche <bvanassche@google.com>
Starting from Qcom UFS version 4.0, vendor specific REG_UFS_PARAM0 register
can be used to determine the maximum gear supported by the controller.
Suggested-by: Can Guo <quic_cang@quicinc.com>
Reviewed-by: Andrew Halaney <ahalaney@redhat.com>
Tested-by: Andrew Halaney <ahalaney@redhat.com> # Qdrive3/sa8540p-ride
Change-Id: Ice5a7fd56b090041cad570a341e95e53f9d53485
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Bug: 267974767
(cherry picked from commit 2c407fe970 git://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git for-next)
Signed-off-by: Bart Van Assche <bvanassche@google.com>
Starting from Qualcomm UFS version 4, the UFS device needs to be
reinitialized after switching to maximum gear by the UFS core. Hence, add
support for it by enabling the UFSHCD_QUIRK_REINIT_AFTER_MAX_GEAR_SWITCH
quirk, implementing reinit_notify() callback and using the agreed gear
speed for setting the PHY mode.
Suggested-by: Can Guo <quic_cang@quicinc.com>
Tested-by: Andrew Halaney <ahalaney@redhat.com> # Qdrive3/sa8540p-ride
Change-Id: I0f4c6d840734f9966870d2d3636a934165fd13c3
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Bug: 267974767
(cherry picked from commit baf5ddac90 git://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git for-next)
Signed-off-by: Bart Van Assche <bvanassche@google.com>
In the preparation of adding support for new gears, move the logic that
finds the gear for each platform to a new function. This helps with code
readability and also allows the logic to be used in other places of the
driver in future.
While at it, make it clear that this driver only supports symmetric gear
setting (hs_tx_gear == hs_rx_gear).
Reviewed-by: Andrew Halaney <ahalaney@redhat.com>
Tested-by: Andrew Halaney <ahalaney@redhat.com> # Qdrive3/sa8540p-ride
Change-Id: I84a9ba276db78e041bc9913e1d6554e05da4023b
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Bug: 267974767
(cherry picked from commit c270986527 git://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git for-next)
Signed-off-by: Bart Van Assche <bvanassche@google.com>
reinit_notify() callback can be used by the UFS controller drivers to
perform changes required for UFSHCD reinit that can happen during max gear
switch.
Tested-by: Andrew Halaney <ahalaney@redhat.com> # Qdrive3/sa8540p-ride
Change-Id: Ib9cf5903405eab16a14ed55e17b6505592de711b
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Bug: 267974767
(cherry picked from commit c2c38c573a git://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git for-next)
Signed-off-by: Bart Van Assche <bvanassche@google.com>
On newer UFS revisions, the register at offset 0xD0 is called,
REG_UFS_PARAM0. Since the existing register, RETRY_TIMER_REG is not used
anywhere, it is safe to use the new name.
Reviewed-by: Andrew Halaney <ahalaney@redhat.com>
Reviewed-by: Asutosh Das <quic_asutoshd@quicinc.com>
Tested-by: Andrew Halaney <ahalaney@redhat.com> # Qdrive3/sa8540p-ride
Change-Id: Ia5387b6687e410a4d08d992c4da246063232dcb9
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Bug: 267974767
(cherry picked from commit 7959587f32 git://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git for-next)
Signed-off-by: Bart Van Assche <bvanassche@google.com>
In the reset assert and deassert callbacks, the supplied "id" is not used
at all and only the HBA reset is performed all the time. So there is no
reason to use a WARN_ON() on the "id".
Reviewed-by: Andrew Halaney <ahalaney@redhat.com>
Reviewed-by: Asutosh Das <quic_asutoshd@quicinc.com>
Tested-by: Andrew Halaney <ahalaney@redhat.com> # Qdrive3/sa8540p-ride
Change-Id: I2979206c0c765d9cb3317550a83092bbb17d3bc8
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Bug: 267974767
(cherry picked from commit a98c2183e8 git://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git for-next)
Signed-off-by: Bart Van Assche <bvanassche@google.com>
A goto statement in an error path is useful if the function needs to do
cleanup other than returning the error code. But in this driver, goto
statements are used for just returning the error code in many places. This
really makes it hard to read the code.
Get rid of those goto statements and just return the error code directly.
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Asutosh Das <quic_asutoshd@quicinc.com>
Tested-by: Andrew Halaney <ahalaney@redhat.com> # Qdrive3/sa8540p-ride
Change-Id: I634e2abe6bc4b22aa9779cc04149edd9cce7290c
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Bug: 267974767
(cherry picked from commit 031312dbc6 git://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git for-next)
Signed-off-by: Bart Van Assche <bvanassche@google.com>
Add driver code for Unisoc UFS host controller, along with UFS
initialization.
Change-Id: Id267c2a328538fc9d6d6f87c74502705bc9c93c0
Signed-off-by: Zhe Wang <zhe.wang1@unisoc.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Bug: 267974767
(cherry picked from commit df7320bac3 git://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git for-next)
Signed-off-by: Bart Van Assche <bvanassche@google.com>
There shouldn't be any restriction of the descriptor size (not the
descriptor id for that matter) up to QUERY_DESC_MAX_SIZE. According to the
spec, the caller can use any descriptor size, and it is up to the device to
return the actual size. Therefore there shouldn't be any sizes hardcoded
in the kernel, nor any need to cache it, hence the
ufshcd_map_desc_id_to_length() function is redundant. Always read the
descriptors with QUERY_DESC_MAX_SIZE size.
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Bean Huo <beanhuo@micron.com>
Suggested-by: Bean Huo <beanhuo@micron.com>
Change-Id: Ie8377548c09155285dc9b5f249bfad1e3aceacee
Signed-off-by: Arthur Simchaev <Arthur.Simchaev@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Bug: 267974767
(cherry picked from commit 16ed9d312b git://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git for-next)
Signed-off-by: Bart Van Assche <bvanassche@google.com>
len argument is not used anymore in ufshcd_set_active_icc_lvl() function.
Change-Id: I67c60c25c0602bdbae0a71c28582106b155528c1
Signed-off-by: Arthur Simchaev <Arthur.Simchaev@wdc.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Bean Huo <beanhuo@micron.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Bug: 267974767
(cherry picked from commit 01a0d515b7 git://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git for-next)
Signed-off-by: Bart Van Assche <bvanassche@google.com>
Always read the descriptor with QUERY_DESC_MAX_SIZE. According to the
spec, the device returns the actual size.
Change-Id: Ibc1fbd523e54f187057a69754c8e4141cc48a902
Signed-off-by: Arthur Simchaev <Arthur.Simchaev@wdc.com>
Reviewed-by: Bean Huo <beanhuo@micron.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Bug: 267974767
(cherry picked from commit f2a89b071b git://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git for-next)
Signed-off-by: Bart Van Assche <bvanassche@google.com>
