In the past %pK was preferable to %p as it would not leak raw pointer
values into the kernel log. Since commit ad67b74d24 ("printk: hash
addresses printed with %p") the regular %p has been improved to avoid
this issue. Furthermore, restricted pointers ("%pK") were never meant to
be used through printk(). They can still unintentionally leak raw
pointers or acquire sleeping locks in atomic contexts.
Switch to the regular pointer formatting which is safer and easier to
reason about.
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Link: https://lore.kernel.org/r/20250611-restricted-pointers-scsi-v1-1-fe31bfbc4910@linutronix.de
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
LKP reports below warning when building for RISC-V with randconfig
configuration.
drivers/scsi/hisi_sas/hisi_sas_v3_hw.c:4554:25: sparse:
sparse: incorrect type in argument 4 (different base types)
@@ expected restricted __le32 [usertype] *[assigned] ptr
@@ got unsigned int * @@
Type cast to fix this warning.
Fixes: 4ca7fe99fc ("scsi: hisi_sas: Use macro instead of magic number")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202505150705.k9ZzMxf1-lkp@intel.com/
Signed-off-by: Yihang Li <liyihang9@huawei.com>
Link: https://lore.kernel.org/r/20250515013504.3234016-1-liyihang9@huawei.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Pull in fixes from 6.15 and resolve a few conflicts so we can have a
clean base for UFS patches.
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
SATA devices are lost when FLR is performed while the controller and disks
are in suspended state.
This is because the libata layer is called to initialize the SATA device
during controller resume. If FLR is executed at this time, the IDENTIFY
command fails. As a result, the revalidate fails, and the SATA device is
disabled by the libata layer.
Wait until error handling completes.
Signed-off-by: Yihang Li <liyihang9@huawei.com>
Link: https://lore.kernel.org/r/20250414080845.1220997-5-liyihang9@huawei.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The hisi_sas driver has a large number of magic numbers which makes for
unfriendly code reading. Use macro definitions instead.
Signed-off-by: Yihang Li <liyihang9@huawei.com>
Link: https://lore.kernel.org/r/20250414080845.1220997-2-liyihang9@huawei.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
timer_delete[_sync]() replaces del_timer[_sync](). Convert the whole tree
over and remove the historical wrapper inlines.
Conversion was done with coccinelle plus manual fixups where necessary.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
when a SATA disk is directly connected the SAS controller determines the
disk to which I/Os are delivered based on the port ID in the DQ entry.
When many phys are disconnected and reconnect, the port ID of phys were
changed and used by other link, resulting in I/O being sent to incorrect
disk. Data inconsistency on the SATA disk may occur during I/O retries
using the old port ID. So enable force phy, then force the command to be
executed in a certain phy, and if the actual phy ID of the port does not
match the phy configured in the command, the chip will stop delivering the
I/O to disk.
Fixes: ce60689e12 ("scsi: hisi_sas: add v3 code to send ATA frame")
Signed-off-by: Xingui Yang <yangxingui@huawei.com>
Link: https://lore.kernel.org/r/20250312095135.3048379-2-yangxingui@huawei.com
Reviewed-by: Yihang Li <liyihang9@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
At present, we determine the protocol through the cmd type, but other cmd
types, such as vendor-specific commands, default to the PIO protocol. This
strategy often causes the execution of different vendor-specific commands
to fail. In fact, for these commands, a better way is to use the protocol
configured by the command's tf to determine its protocol.
Fixes: 6f2ff1a131 ("hisi_sas: add v2 path to send ATA command")
Signed-off-by: Xingui Yang <yangxingui@huawei.com>
Link: https://lore.kernel.org/r/20250220090011.313848-1-liyihang9@huawei.com
Reviewed-by: Yihang Li <liyihang9@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Updates to the usual drivers (ufs, lpfc, fnic, qla2xx, mpi3mr) The
major core change is the renaming of the slave_ methods plus a bit of
constification. The rest are minor updates and fixes.
Signed-off-by: James E.J. Bottomley <James.Bottomley@HansenPartnership.com>
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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI updates from James Bottomley:
"Updates to the usual drivers (ufs, lpfc, fnic, qla2xx, mpi3mr).
The major core change is the renaming of the slave_ methods plus a bit
of constification. The rest are minor updates and fixes"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (103 commits)
scsi: fnic: Propagate SCSI error code from fnic_scsi_drv_init()
scsi: fnic: Test for memory allocation failure and return error code
scsi: fnic: Return appropriate error code from failure of scsi drv init
scsi: fnic: Return appropriate error code for mem alloc failure
scsi: fnic: Remove always-true IS_FNIC_FCP_INITIATOR macro
scsi: fnic: Fix use of uninitialized value in debug message
scsi: fnic: Delete incorrect debugfs error handling
scsi: fnic: Remove unnecessary else to fix warning in FDLS FIP
scsi: fnic: Remove extern definition from .c files
scsi: fnic: Remove unnecessary else and unnecessary break in FDLS
scsi: mpi3mr: Fix possible crash when setting up bsg fails
scsi: ufs: bsg: Set bsg_queue to NULL after removal
scsi: ufs: bsg: Delete bsg_dev when setting up bsg fails
scsi: st: Don't set pos_unknown just after device recognition
scsi: aic7xxx: Fix build 'aicasm' warning
scsi: Revert "scsi: ufs: core: Probe for EXT_IID support"
scsi: storvsc: Ratelimit warning logs to prevent VM denial of service
scsi: scsi_debug: Constify sdebug_driver_template
scsi: documentation: Corrections for struct updates
scsi: driver-api: documentation: Change what is added to docbook
...
Use a plain BLK_MQ_F_* flag to select the round robin tag selection
instead of overlaying an enum with just two possible values into the
flags space.
Doing so allows adding a BLK_MQ_F_MAX sentinel for simplified overflow
checking in the messy debugfs helpers.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: John Garry <john.g.garry@oracle.com>
Link: https://lore.kernel.org/r/20250106083531.799976-5-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Replace all users of blk_mq_pci_map_queues with the more generic
blk_mq_map_hw_queues. This in preparation to retire
blk_mq_pci_map_queues.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: John Garry <john.g.garry@oracle.com>
Signed-off-by: Daniel Wagner <wagi@kernel.org>
Link: https://lore.kernel.org/r/20241202-refactor-blk-affinity-helpers-v6-5-27211e9c2cd5@kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Improve naming consistency with the .sdev_prep() and .sdev_destroy()
methods by renaming .device_configure() into .sdev_configure().
Cc: Christoph Hellwig <hch@lst.de>
Acked-by: Damien Le Moal <dlemoal@kernel.org>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Link: https://lore.kernel.org/r/20241022180839.2712439-3-bvanassche@acm.org
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Rename .slave_alloc() into .sdev_init() and .slave_destroy() into
.sdev_destroy(). The new names make it clear that these are actions on
SCSI devices. Make this change in the SCSI core, SCSI drivers and also
in the ATA drivers. No functionality has been changed.
This patch has been created as follows:
* Change the text "slave_alloc" into "sdev_init" in all source files
except those in drivers/net/ and Documentation/.
* Change the text "slave_destroy" into "sdev_destroy" in all source
files except those in drivers/net/ and Documentation/.
* Rename lpfc_no_slave() into lpfc_no_sdev().
* Manually adjust whitespace where necessary to restore vertical
alignment (dc395x driver and include/linux/libata.h).
Acked-by: Damien Le Moal <dlemoal@kernel.org>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Link: https://lore.kernel.org/r/20241022180839.2712439-2-bvanassche@acm.org
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Before that, after the user triggers the dump, the latest dump
information can be viewed in the directory with the maximum number in
the dump directory.
After this series patch, the driver creates all debugfs directories and
files during initialization. Therefore, users cannot know the directory
where the latest dump information is stored. So, add latest_dump file to
notify users where the latest dump information is stored.
Signed-off-by: Yihang Li <liyihang9@huawei.com>
Link: https://lore.kernel.org/r/20241008021822.2617339-14-liyihang9@huawei.com
Reviewed-by: Xingui Yang <yangxingui@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
At present, it is found that some SATA HDD disks may continue to return
the HOLD primitive for more than 500ms when they are busy writing data,
which is more likely to trigger an STP link timeout exception. Now
Modify STP link timer from 500ms to the maximum value of 1.048575s.
Signed-off-by: Xingui Yang <yangxingui@huawei.com>
Link: https://lore.kernel.org/r/20241008021822.2617339-12-liyihang9@huawei.com
Reviewed-by: Yihang Li <liyihang9@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The SATA disk will be locked after the disk sends the DMA Setup frame
until all data frame transmission is completed. The
CFG_ICT_TIMER_STEP_TRSH register is used for sata disk to configure the
step size of the timer which records the time when the disk is
locked. The unit is 1us and the default step size is 150ms. If the disk
is locked for more than 7 timer steps, the io to be sent to the disk
will end abnormally.
The current timeout is only about 1 second, it is easy to trigger IO
abnormal end when the SATA hard disk returns data slowly. Adjust the
timeout to 7 seconds based on ERC time of most disks.
Signed-off-by: Xingui Yang <yangxingui@huawei.com>
Link: https://lore.kernel.org/r/20241008021822.2617339-10-liyihang9@huawei.com
Reviewed-by: Xiang Chen <chenxiang66@hisilicon.com>
Reviewed-by: Yihang Li <liyihang9@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
In the current interrupt reporting mode, each CQ entry reports an
interrupt. However, when there are a large number of I/O hardware
completion interrupts, the following issue may occur:
[ 4682.678657][ C129] irq 134: nobody cared (try booting with the "irqpoll" option)
[ 4682.708455][ C129] Call trace:
[ 4682.711589][ C129] dump_backtrace+0x0/0x1e4
[ 4682.715934][ C129] show_stack+0x20/0x2c
[ 4682.719933][ C129] dump_stack+0xd8/0x140
[ 4682.724017][ C129] __report_bad_irq+0x54/0x180
[ 4682.728625][ C129] note_interrupt+0x1ec/0x2f0
[ 4682.733143][ C129] handle_irq_event+0x118/0x1ac
[ 4682.737834][ C129] handle_fasteoi_irq+0xc8/0x200
[ 4682.742613][ C129] __handle_domain_irq+0x84/0xf0
[ 4682.747391][ C129] gic_handle_irq+0x88/0x2c0
[ 4682.751822][ C129] el1_irq+0xbc/0x140
[ 4682.755648][ C129] _find_next_bit.constprop.0+0x20/0x94
[ 4682.761036][ C129] cpumask_next+0x24/0x30
[ 4682.765208][ C129] gic_ipi_send_mask+0x48/0x170
[ 4682.769900][ C129] __ipi_send_mask+0x34/0x110
[ 4682.775720][ C129] smp_cross_call+0x3c/0xcc
[ 4682.780064][ C129] arch_send_call_function_single_ipi+0x38/0x44
[ 4682.786146][ C129] send_call_function_single_ipi+0xd0/0xe0
[ 4682.791794][ C129] generic_exec_single+0xb4/0x170
[ 4682.796659][ C129] smp_call_function_single_async+0x2c/0x40
[ 4682.802395][ C129] blk_mq_complete_request_remote.part.0+0xec/0x100
[ 4682.808822][ C129] blk_mq_complete_request+0x30/0x70
[ 4682.813950][ C129] scsi_mq_done+0x48/0xac
[ 4682.818128][ C129] sas_scsi_task_done+0xb0/0x150 [libsas]
[ 4682.823692][ C129] slot_complete_v3_hw+0x230/0x710 [hisi_sas_v3_hw]
[ 4682.830120][ C129] cq_thread_v3_hw+0xbc/0x190 [hisi_sas_v3_hw]
[ 4682.836114][ C129] irq_thread_fn+0x34/0xa4
[ 4682.840371][ C129] irq_thread+0xc4/0x130
[ 4682.844455][ C129] kthread+0x108/0x13c
[ 4682.848365][ C129] ret_from_fork+0x10/0x18
[ 4682.852621][ C129] handlers:
[ 4682.855577][ C129] [<00000000949e52bf>] cq_interrupt_v3_hw [hisi_sas_v3_hw] threaded [<000000005d8e3b68>] cq_thread_v3_hw [hisi_sas_v3_hw]
[ 4682.868084][ C129] Disabling IRQ #134
When the IRQ management layer processes each hardware interrupt, if the
return value of the interrupt handler is IRQ_WAKE_THREAD, it will wake
up the handler thread for this interrupt action and set IRQTF_RUNTHREAD
flag, wait for the interrupt handling thread to clear the
IRQTF_RUNTHREAD flag after execution. Later in note_interrupt(), use
irq_count to count hardware interrupts and irqs_unhandled to count
interrupts for which no thread handler is responsible. When irq_count
reaches 100000 and irqs_unhandled reaches 99000, irq will be disabled.
In the performance test scenario, I/O completion hardware interrupts are
continuously and quickly generated. As a result, the interrupt
processing thread is cyclically called in irq_thread() and does not
exit, this affects the response of the interrupt thread to the hardware
interrupt and causes irqs_unhandled to grow to 99000. Finally, the irq
is disabled.
Therefore, default enable interrupt coalescing to reduce the generation
of hardware interrupts, this helps interrupt processing threads to stop
calling in irq_thread().
For interrupt coalescing, according to the actual performance test, set
the count of CQ entries to 10 and the interrupt coalescing timeout
period to 10us based on the actual performance test.
Before and after interrupt coalescing is enabled, the 4K read/write
performance is improved by about 3%, and the 256K read/write performance
is basically the same.
Signed-off-by: Yihang Li <liyihang9@huawei.com>
Link: https://lore.kernel.org/r/20241008021822.2617339-9-liyihang9@huawei.com
Reviewed-by: Xiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Users can suspend the machine with 'echo disk > /sys/power/state', but
the suspend will fail because the SAS controller cannot be suspended:
[root@localhost ~]# echo freeze > /sys/power/state
-bash: echo: write error: Device or resource busy
[15104.142955] PM: suspend entry (s2idle)
...
[15104.283465] hisi_sas_v3_hw 0000:32:04.0: entering suspend state
[15104.283480] hisi_sas_v3_hw 0000:30:04.0: entering suspend state
[15104.283500] hisi_sas_v3_hw 0000:32:04.0: PM suspend: host status cannot be suspended
[15104.283508] hisi_sas_v3_hw 0000:30:04.0: PM suspend: host status cannot be suspended
[15104.283516] hisi_sas_v3_hw 0000:32:04.0: PM: pci_pm_suspend(): suspend_v3_hw+0x0/0x210 [hisi_sas_v3_hw] returns -16
[15104.283527] hisi_sas_v3_hw 0000:32:04.0: PM: dpm_run_callback(): pci_pm_suspend+0x0/0x1c0 returns -16
[15104.283524] hisi_sas_v3_hw 0000:30:04.0: PM: pci_pm_suspend(): suspend_v3_hw+0x0/0x210 [hisi_sas_v3_hw] returns -16
[15104.283533] hisi_sas_v3_hw 0000:32:04.0: PM: failed to suspend async: error -16
[15104.283536] hisi_sas_v3_hw 0000:30:04.0: PM: dpm_run_callback(): pci_pm_suspend+0x0/0x1c0 returns -16
[15104.283542] hisi_sas_v3_hw 0000:30:04.0: PM: failed to suspend async: error -16
The problem is that when the ->runtime_suspend() callback
suspend_v3_hw() is executing, the current runtime PM status is
RPM_ACTIVE and the usage count of the controller is not 0, so return
immediately.
To fix it, Check the device usage count only when the runtime PM status
is RPM_SUSPENDING.
Signed-off-by: Yihang Li <liyihang9@huawei.com>
Link: https://lore.kernel.org/r/20241008021822.2617339-7-liyihang9@huawei.com
Reviewed-by: Xiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
For security purposes, after information is obtained through the FW,
check information to ensure data correctness.
- In v1 and v2 hw, the maximum number of PHYs is 9, while in v3 it is 8.
- In v2 and v3 hw, the maximum number of hardware queues is 16, while
in v1 it is 32.
Also add some debug logs for failure.
Signed-off-by: Yihang Li <liyihang9@huawei.com>
Link: https://lore.kernel.org/r/20241008021822.2617339-4-liyihang9@huawei.com
Reviewed-by: Xiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
In the current debugfs initialization process, the interface
trigger_dump is created first, and then the dump directory is created to
store the register dump information.
The issue is that after the trigger_dump interface is created, users can
access the interface to trigger dump and call
debugfs_create_files_v3_hw(). In debugfs_create_files_v3_hw(), if
.debugfs_dump_dentry is NULL, the file for storing dump information is
created under /sys/kernel/debug, and the memory and information cannot
be released after the driver is uninstalled.
Therefore, the creation of the trigger_dump interface is placed at the
end of debugfs initialization.
Signed-off-by: Yihang Li <liyihang9@huawei.com>
Link: https://lore.kernel.org/r/20241008021822.2617339-3-liyihang9@huawei.com
Reviewed-by: Xiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
To be safe, we should register debugfs at the last stage of driver
initialization and then unregister debugfs at the first stage of driver
uninstallation.
Signed-off-by: Yihang Li <liyihang9@huawei.com>
Link: https://lore.kernel.org/r/20241008021822.2617339-2-liyihang9@huawei.com
Reviewed-by: Xiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Updates to the usual drivers (ufs, lpfc, qla2xxx, mpi3mr, libsas).
The major update (which causes a conflict with block, see below) is
Christoph removing the queue limits and their associated block
helpers. The remaining patches are assorted minor fixes and
deprecated function updates plus a bit of constification.
Signed-off-by: James E.J. Bottomley <James.Bottomley@HansenPartnership.com>
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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI updates from James Bottomley:
"Updates to the usual drivers (ufs, lpfc, qla2xxx, mpi3mr, libsas).
The major update (which causes a conflict with block, see below) is
Christoph removing the queue limits and their associated block
helpers.
The remaining patches are assorted minor fixes and deprecated function
updates plus a bit of constification"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (141 commits)
scsi: mpi3mr: Sanitise num_phys
scsi: lpfc: Copyright updates for 14.4.0.2 patches
scsi: lpfc: Update lpfc version to 14.4.0.2
scsi: lpfc: Add support for 32 byte CDBs
scsi: lpfc: Change lpfc_hba hba_flag member into a bitmask
scsi: lpfc: Introduce rrq_list_lock to protect active_rrq_list
scsi: lpfc: Clear deferred RSCN processing flag when driver is unloading
scsi: lpfc: Update logging of protection type for T10 DIF I/O
scsi: lpfc: Change default logging level for unsolicited CT MIB commands
scsi: target: Remove unused list 'device_list'
scsi: iscsi: Remove unused list 'connlist_err'
scsi: ufs: exynos: Add support for Tensor gs101 SoC
scsi: ufs: exynos: Add some pa_dbg_ register offsets into drvdata
scsi: ufs: exynos: Allow max frequencies up to 267Mhz
scsi: ufs: exynos: Add EXYNOS_UFS_OPT_TIMER_TICK_SELECT option
scsi: ufs: exynos: Add EXYNOS_UFS_OPT_UFSPR_SECURE option
scsi: ufs: dt-bindings: exynos: Add gs101 compatible
scsi: qla2xxx: Fix debugfs output for fw_resource_count
scsi: qedf: Ensure the copied buf is NUL terminated
scsi: bfa: Ensure the copied buf is NUL terminated
...
Switch to the ->device_configure method instead of ->slave_configure and
update the block limits on the passed in queue_limits instead of using the
per-limit accessors.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20240409143748.980206-21-hch@lst.de
Reviewed-by: John Garry <john.g.garry@oracle.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Acked-by: Damien Le Moal <dlemoal@kernel.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
We find that some disks use D2H frame instead of SDB frame to return NCQ
error. Currently, only the I/O corresponding to the D2H frame is processed
in this scenario, which does not meet the processing requirements of the
NCQ error scenario. So we set dev_status to HISI_SAS_DEV_NCQ_ERR and abort
all I/Os of the disk in this scenario.
Co-developed-by: Xingui Yang <yangxingui@huawei.com>
Signed-off-by: Xingui Yang <yangxingui@huawei.com>
Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
Link: https://lore.kernel.org/r/20240402035513.2024241-2-chenxiang66@hisilicon.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
John Garry <john.g.garry@oracle.com> says:
There is much duplication in the scsi_host_template structure for the
drivers which use libsas.
Similar to how a standard template is used in libata with
__ATA_BASE_SHT, create a standard template in LIBSAS_SHT_BASE.
Link: https://lore.kernel.org/r/20240308114339.1340549-1-john.g.garry@oracle.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Use standard template for scsi_host_template structure to reduce
duplication.
Reviewed-by: Jason Yan <yanaijie@huawei.com>
Signed-off-by: John Garry <john.g.garry@oracle.com>
Link: https://lore.kernel.org/r/20240308114339.1340549-4-john.g.garry@oracle.com
Reviewed-by: Igor Pylypiv <ipylypiv@google.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The added sysfs attributes group enables the configuration of NCQ Priority
feature for HBAs that rely on libsas to manage SATA devices.
Omitted hisi_sas_v1_hw.c because v1 HW doesn't support SATA.
Reviewed-by: John Garry <john.g.garry@oracle.com>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Jason Yan <yanaijie@huawei.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Igor Pylypiv <ipylypiv@google.com>
Link: https://lore.kernel.org/r/20240307214418.3812290-6-ipylypiv@google.com
Reviewed-by: Niklas Cassel <cassel@kernel.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
hisi_hba->timer is not used for v3 hw but there are two places that some
operations related to hisi_hba->timer are called by v3 hw:
- Deleting the timer in function hisi_sas_v3_hw() which is only for v3 hw;
- Deleting the timer in function hisi_sas_controller_reset_prepare() which
is common for v1/v2/v3 hw.
We can remove the timer in the first case, but for the second scenario we
need to remove it only for v3 hw, so check hw->sht which is NULL only for
v3 hw before deleting hisi_hba->timer.
Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
Link: https://lore.kernel.org/r/1705904747-62186-5-git-send-email-chenxiang66@hisilicon.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
hisi_sas debugfs remove should be executed only when debugfs is enabled.
Check whether debugfs is enabled and then remove it only if enabled.
Signed-off-by: Yihang Li <liyihang9@huawei.com>
Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
Link: https://lore.kernel.org/r/1705904747-62186-4-git-send-email-chenxiang66@hisilicon.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
In function debugfs_debugfs_snapshot_global_reg_v3_hw() it uses
debugfs_axi_reg.count (which is the number of axi debugfs registers) to
acquire the number of global debugfs registers.
Use debugfs_global_reg.count to acquire the number of global debugfs
registers instead.
Fixes: 623a4b6d5c ("scsi: hisi_sas: Move debugfs code to v3 hw driver")
Signed-off-by: Yihang Li <liyihang9@huawei.com>
Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
Link: https://lore.kernel.org/r/1702525516-51258-6-git-send-email-chenxiang66@hisilicon.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
We obtain the semaphore and set HISI_SAS_RESETTING_BIT in
hisi_sas_reset_prepare_v3_hw(), block the scsi host and set
HISI_SAS_REJECT_CMD_BIT in hisi_sas_controller_reset_prepare(), released
them in hisi_sas_controller_reset_done(). However, if the HW reset failure
in FLR results in early return, the semaphore and flag bits will not be
release.
Rollback some operations including clearing flags / releasing semaphore
when FLR is failed.
Fixes: e5ea48014a ("scsi: hisi_sas: Implement handlers of PCIe FLR for v3 hw")
Signed-off-by: Yihang Li <liyihang9@huawei.com>
Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
Link: https://lore.kernel.org/r/1702525516-51258-5-git-send-email-chenxiang66@hisilicon.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
In function hisi_sas_controller_prereset(), -ENOSYS (Function not
implemented) should be returned if the driver does not support .soft_reset.
Returns -EPERM (Operation not permitted) if HISI_SAS_RESETTING_BIT is
already be set.
In function _suspend_v3_hw(), returns -EPERM (Operation not permitted) if
HISI_SAS_RESETTING_BIT is already be set.
Fixes: 4522204ab2 ("scsi: hisi_sas: tidy host controller reset function a bit")
Signed-off-by: Yihang Li <liyihang9@huawei.com>
Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
Link: https://lore.kernel.org/r/1702525516-51258-3-git-send-email-chenxiang66@hisilicon.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Currently in directly attached scenario, the phyup event
HISI_PHYE_PHY_UP_PM is notified before .phy_attached is set - this may
cause the phyup work hisi_sas_bytes_dmaed() execution failed and the
attached device will not be found.
To fix it, set .phy_attached before notifing phyup event.
Signed-off-by: Yihang Li <liyihang9@huawei.com>
Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
Link: https://lore.kernel.org/r/1702525516-51258-2-git-send-email-chenxiang66@hisilicon.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
there's little I can say which isn't in the individual changelogs.
The lengthier patch series are
- "kdump: use generic functions to simplify crashkernel reservation in
arch", from Baoquan He. This is mainly cleanups and consolidation of
the "crashkernel=" kernel parameter handling.
- After much discussion, David Laight's "minmax: Relax type checks in
min() and max()" is here. Hopefully reduces some typecasting and the
use of min_t() and max_t().
- A group of patches from Oleg Nesterov which clean up and slightly fix
our handling of reads from /proc/PID/task/... and which remove
task_struct.therad_group.
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Merge tag 'mm-nonmm-stable-2023-11-02-14-08' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull non-MM updates from Andrew Morton:
"As usual, lots of singleton and doubleton patches all over the tree
and there's little I can say which isn't in the individual changelogs.
The lengthier patch series are
- 'kdump: use generic functions to simplify crashkernel reservation
in arch', from Baoquan He. This is mainly cleanups and
consolidation of the 'crashkernel=' kernel parameter handling
- After much discussion, David Laight's 'minmax: Relax type checks in
min() and max()' is here. Hopefully reduces some typecasting and
the use of min_t() and max_t()
- A group of patches from Oleg Nesterov which clean up and slightly
fix our handling of reads from /proc/PID/task/... and which remove
task_struct.thread_group"
* tag 'mm-nonmm-stable-2023-11-02-14-08' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (64 commits)
scripts/gdb/vmalloc: disable on no-MMU
scripts/gdb: fix usage of MOD_TEXT not defined when CONFIG_MODULES=n
.mailmap: add address mapping for Tomeu Vizoso
mailmap: update email address for Claudiu Beznea
tools/testing/selftests/mm/run_vmtests.sh: lower the ptrace permissions
.mailmap: map Benjamin Poirier's address
scripts/gdb: add lx_current support for riscv
ocfs2: fix a spelling typo in comment
proc: test ProtectionKey in proc-empty-vm test
proc: fix proc-empty-vm test with vsyscall
fs/proc/base.c: remove unneeded semicolon
do_io_accounting: use sig->stats_lock
do_io_accounting: use __for_each_thread()
ocfs2: replace BUG_ON() at ocfs2_num_free_extents() with ocfs2_error()
ocfs2: fix a typo in a comment
scripts/show_delta: add __main__ judgement before main code
treewide: mark stuff as __ro_after_init
fs: ocfs2: check status values
proc: test /proc/${pid}/statm
compiler.h: move __is_constexpr() to compiler.h
...
Use DEFINE_SHOW_STORE_ATTRIBUTE() helper for read-write file to reduce some
duplicated code.
Link: https://lkml.kernel.org/r/20230905024835.43219-3-yangxingui@huawei.com
Signed-off-by: Luo Jiaxing <luojiaxing@huawei.com>
Co-developed-by: Xingui Yang <yangxingui@huawei.com>
Signed-off-by: Xingui Yang <yangxingui@huawei.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Animesh Manna <animesh.manna@intel.com>
Cc: Anshuman Gupta <anshuman.gupta@intel.com>
Cc: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Cc: Felipe Balbi <felipe.balbi@linux.intel.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Himanshu Madhani <himanshu.madhani@cavium.com>
Cc: James Bottomley <jejb@linux.ibm.com>
Cc: John Garry <john.g.garry@oracle.com>
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Cc: Uma Shankar <uma.shankar@intel.com>
Cc: Xiang Chen <chenxiang66@hisilicon.com>
Cc: Zeng Tao <prime.zeng@hisilicon.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Currently, if CONFIG_SCSI_HISI_SAS_DEBUGFS_DEFAULT_ENABLE is enabled, the
memory space used by DFX is allocated during device initialization, which
occupies a large number of memory resources. The memory usage before and
after the driver is loaded is as follows:
Memory usage before the driver is loaded:
$ free -m
total used free shared buff/cache available
Mem: 867352 2578 864037 11 735 861681
Swap: 4095 0 4095
Memory usage after the driver which include 4 HBAs is loaded:
$ insmod hisi_sas_v3_hw.ko
$ free -m
total used free shared buff/cache available
Mem: 867352 4760 861848 11 743 859495
Swap: 4095 0 4095
The driver with 4 HBAs connected will allocate about 110 MB of memory
without enabling debugfs.
Therefore, to avoid wasting memory resources, DFX memory is allocated
during dump triggering. The dump may fail due to memory allocation
failure. After this change, each dump costs about 10 MB of memory, and each
dump lasts about 100 ms.
Signed-off-by: Yihang Li <liyihang9@huawei.com>
Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
Link: https://lore.kernel.org/r/1694571327-78697-4-git-send-email-chenxiang66@hisilicon.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Currently, register information dump is performed via workqueue, regardless
of the trigger mode (automatic or manual). There is a delay in dumping
register through workqueue, the exact register information at trigger time
cannot be obtained.
Call register snapshot directly instead of through a workqueue.
Signed-off-by: Yihang Li <liyihang9@huawei.com>
Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
Link: https://lore.kernel.org/r/1694571327-78697-3-git-send-email-chenxiang66@hisilicon.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
John Garry <john.g.garry@oracle.com> says:
This series tidies-up libsas a bit, including:
- delete structure(s) with only one member
- delete structure members which are only ever set
- delete structure members which are never set and code which relies on
that member being set
This conflicts with the following series:
https://lore.kernel.org/linux-scsi/20230809132249.37948-1-yuehaibing@huawei.com/
Any conflict should be trivial to resolve.
Based on mkp-scsi staging at a18e81d17a ("scsi: ufs: ufs-pci: Add support for QEMU")
Link: https://lore.kernel.org/r/20230815115156.343535-1-john.g.garry@oracle.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Since libsas was introduced in commit 2908d778ab ("[SCSI] aic94xx: new
driver"), sas_ssp_task.task_prio is never set, so delete it and any
references which depend on it being set (all of them).
Signed-off-by: John Garry <john.g.garry@oracle.com>
Link: https://lore.kernel.org/r/20230815115156.343535-8-john.g.garry@oracle.com
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Jason Yan <yanaijie@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Since commit 79855d1785 ("libsas: remove task_collector mode"), struct
scsi_core only contains a reference to the shost. struct scsi_core is only
used in sas_ha_struct.core, so delete scsi_core and replace with a
reference to the shost there.
Signed-off-by: John Garry <john.g.garry@oracle.com>
Link: https://lore.kernel.org/r/20230815115156.343535-5-john.g.garry@oracle.com
Reviewed-by: Jason Yan <yanaijie@huawei.com>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Since libsas was introduced in commit 2908d778ab ("[SCSI] aic94xx: new
driver"), sas_ha_struct.lldd_module has only ever been set, so remove it.
Struct scsi_host_template already has a reference to the LLD driver
module as to stop the driver being removed unexpectedly.
Signed-off-by: John Garry <john.g.garry@oracle.com>
Link: https://lore.kernel.org/r/20230815115156.343535-2-john.g.garry@oracle.com
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Jason Yan <yanaijie@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
LKP reports below warning when building for RISC-V with randconfig
configuration.
drivers/scsi/hisi_sas/hisi_sas_v3_hw.c:4567:35: sparse:
sparse: incorrect type in argument 4 (different base types)
@@ expected restricted __le32 [usertype] *[assigned] ptr
@@ got unsigned int * @@
Type cast to fix this warning.
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202307260823.whMNpZ1C-lkp@intel.com/
Signed-off-by: Sunil V L <sunilvl@ventanamicro.com>
Link: https://lore.kernel.org/r/20230726051759.30038-1-sunilvl@ventanamicro.com
Reviewed-by: Xiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
When FIO and debugfs snapshot occur concurrently, some SATA I/Os are failed
to return to the upper layer due to the setting of HISI_SAS_REJECT_CMD_BIT.
Then the SCSI layer invokes the error processing thread. However,
sas_ata_hard_reset() in EH also fails to be reset due to the setting of
HISI_SAS_REJECT_CMD_BIT. As a result, the device is disabled.
Calling scsi_block_requests() in the front of a debugfs snapshot and wait
command complete before setting HISI_SAS_REJECT_CMD_BIT to avoid SATA I/O
failures.
Signed-off-by: Yihang Li <liyihang9@huawei.com>
Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
Link: https://lore.kernel.org/r/1689045300-44318-3-git-send-email-chenxiang66@hisilicon.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The PIO read command has no response frame and the struct iu[1024] won't be
filled. I/Os which are normally completed will be treated as failed in
sas_ata_task_done() when iu contains abnormal dirty data.
Consequently ending_fis should not be filled by iu when the response frame
hasn't been written to memory.
Fixes: d380f55503 ("scsi: hisi_sas: Don't bother clearing status buffer IU in task prep")
Signed-off-by: Xingui Yang <yangxingui@huawei.com>
Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
Link: https://lore.kernel.org/r/1689045300-44318-2-git-send-email-chenxiang66@hisilicon.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
