Macpaul Lin [Tue, 22 Jul 2025 08:57:19 +0000 (16:57 +0800)]
scsi: dt-bindings: mediatek,ufs: add MT8195 compatible and update clock nodes
Add MT8195 UFSHCI compatible string. Relax the schema to allow between
one to eight clocks/clock-names entries for all MediaTek UFS
nodes. Legacy platforms may only need a few clocks, whereas newer devices
such as the MT8195 require additional clock-gating domains. For MT8195
specifically, enforce exactly eight clocks and clock-names entries to
satisfy its hardware requirements.
Macpaul Lin [Tue, 22 Jul 2025 08:57:18 +0000 (16:57 +0800)]
scsi: dt-bindings: mediatek,ufs: Add ufs-disable-mcq flag for UFS host
Add the 'mediatek,ufs-disable-mcq' property to the UFS device-tree
bindings. This flag corresponds to the UFS_MTK_CAP_DISABLE_MCQ host
capability recently introduced in the UFS host driver, allowing it to
disable the Multiple Circular Queue (MCQ) feature when present. The
binding schema has also been updated to resolve DTBS check errors.
Cc: stable@vger.kernel.org Fixes: 46bd3e31d74b ("scsi: ufs: mediatek: Add UFS_MTK_CAP_DISABLE_MCQ") Signed-off-by: Macpaul Lin <macpaul.lin@mediatek.com> Link: https://lore.kernel.org/r/20250722085721.2062657-2-macpaul.lin@mediatek.com Reviewed-by: Rob Herring (Arm) <robh@kernel.org> Reviewed-by: Peter Wang <peter.wang@mediatek.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Macpaul Lin [Tue, 22 Jul 2025 08:57:17 +0000 (16:57 +0800)]
scsi: ufs: ufs-mediatek: Add UFS host support for MT8195 SoC
Add "mediatek,mt8195-ufshci" to the of_device_id table to enable support
for MediaTek MT8195/MT8395 UFS host controller. This matches the device
node entry in the MT8195/MT8395 device tree and allows proper driver
binding.
Adrian Hunter [Wed, 23 Jul 2025 16:58:56 +0000 (19:58 +0300)]
scsi: ufs: ufs-pci: Remove control of UIC Completion interrupt for Intel MTL
Now that UFS core enables the UIC Completion interrupt only when needed,
Intel MTL driver no longer needs to control the interrupt itself. So
remove the associated code.
Adrian Hunter [Wed, 23 Jul 2025 16:58:54 +0000 (19:58 +0300)]
scsi: ufs: core: Set and clear UIC Completion interrupt as needed
Currently the UIC Completion interrupt is left enabled except for when
issuing link hibernate commands, in which case the interrupt is disabled
and then re-enabled.
Instead, set and clear the interrupt enable bit as needed.
That is slightly simpler and less error prone, but also avoids side
effects of accessing the interrupt enable register after entering link
hibernation. Specifically, for some host controllers like Intel MTL,
doing so disrupts the link state transition.
Note also, the interrupt register is not read back anymore after it is
updated. No other code does that, so it is assumed to be no longer
necessary if it ever was.
Adrian Hunter [Wed, 23 Jul 2025 16:58:51 +0000 (19:58 +0300)]
scsi: ufs: ufs-pci: Remove UFS PCI driver's ->late_init() call back
->late_init() was introduced to allow the default values for rpm_lvl and
spm_lvl to be set. Since commit bb9850704c04 ("scsi: ufs: core: Honor
runtime/system PM levels if set by host controller drivers") and commit fe06b7c07f3f ("scsi: ufs: core: Set default runtime/system PM levels
before ufshcd_hba_init()"), those default values can be set in the
->init() variant call back.
Move the setting of default values for rpm_lvl and spm_lvl to ->init()
and remove ->late_init().
Adrian Hunter [Wed, 23 Jul 2025 16:58:50 +0000 (19:58 +0300)]
scsi: ufs: ufs-pci: Fix default runtime and system PM levels
Intel MTL-like host controllers support auto-hibernate. Using
auto-hibernate with manual (driver initiated) hibernate produces more
complex operation. For example, the host controller will have to exit
auto-hibernate simply to allow the driver to enter hibernate state
manually. That is not recommended.
The default rpm_lvl and spm_lvl is 3, which includes manual hibernate.
Change the default values to 2, which does not.
Note, to be simpler to backport to stable kernels, utilize the UFS PCI
driver's ->late_init() call back. Recent commits have made it possible
to set up a controller-specific default in the regular ->init() call
back, but not all stable kernels have those changes.
Fixes: 4049f7acef3e ("scsi: ufs: ufs-pci: Add support for Intel MTL") Cc: stable@vger.kernel.org Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Link: https://lore.kernel.org/r/20250723165856.145750-3-adrian.hunter@intel.com Reviewed-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
scsi: ufs: ufs-pci: Fix hibernate state transition for Intel MTL-like host controllers
UFSHCD core disables the UIC completion interrupt when issuing UIC
hibernation commands, and re-enables it afterwards if it was enabled to
start with, refer ufshcd_uic_pwr_ctrl(). For Intel MTL-like host
controllers, accessing the register to re-enable the interrupt disrupts
the state transition.
Use hibern8_notify variant operation to disable the interrupt during the
entire hibernation, thereby preventing the disruption.
Fixes: 4049f7acef3e ("scsi: ufs: ufs-pci: Add support for Intel MTL") Cc: stable@vger.kernel.org Signed-off-by: Archana Patni <archana.patni@intel.com> Link: https://lore.kernel.org/r/20250723165856.145750-2-adrian.hunter@intel.com Reviewed-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Peter Wang [Tue, 22 Jul 2025 03:07:22 +0000 (11:07 +0800)]
scsi: ufs: host: mediatek: Add clock scaling query function
Introduce a clock scaling readiness query function to streamline the
process of checking clock scaling parameters. This function simplifies
the code by encapsulating the logic for determining if clock scaling is
ready.
Alice Chao [Tue, 22 Jul 2025 03:07:21 +0000 (11:07 +0800)]
scsi: ufs: host: mediatek: Add more UFSCHI hardware versions
Introduce a function for version control to distinguish between new and
old platforms. Update the handling of hardware IP versions, ensuring
correct version comparisons by adjusting the version format for specific
projects.
Signed-off-by: Alice Chao <alice.chao@mediatek.com> Link: https://lore.kernel.org/r/20250722030841.1998783-7-peter.wang@mediatek.com Reviewed-by: Peter Wang <peter.wang@mediatek.com> Reviewed-by: Chun-Hung Wu <chun-hung.wu@mediatek.com> Signed-off-by: Peter Wang <peter.wang@mediatek.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Peter Wang [Tue, 22 Jul 2025 03:07:20 +0000 (11:07 +0800)]
scsi: ufs: host: mediatek: Set IRQ affinity policy for MCQ mode
Set the IRQ affinity for MCQ mode to improve performance. Specifically,
it migrates the IRQ from CPU0 to CPU3 to enhance IRQ handling efficiency.
Setting IRQ affinity directly from the kernel allows the configuration to
take effect earlier, and provides greater security and consistency,
especially important for systems with strict performanceor real-time
requirements.
On MT6989 and later platforms, control of DDR_EN has been switched from
SPM to EMI. To prevent abnormal access to DRAM, it is necessary to wait
for 'ddren_ack' or assert 'ddren_urgent' after sending 'ddren_req'.
Introduce the DDR_EN configuration in the UFS initialization flow,
utilizing the assertion of 'ddren_urgent' to maintain performance.
Signed-off-by: Naomi Chu <naomi.chu@mediatek.com> Link: https://lore.kernel.org/r/20250722030841.1998783-3-peter.wang@mediatek.com Reviewed-by: Peter Wang <peter.wang@mediatek.com> Reviewed-by: Chun-Hung Wu <chun-hung.wu@mediatek.com> Signed-off-by: Peter Wang <peter.wang@mediatek.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Simplify the conversion from unsigned int to boolean by removing explicit
conversions and parentheses, relying on implicit conversion instead. This
change ensures consistency with other usages in ufs-mediatek.c and
streamlines the code.
Signed-off-by: Peter Wang <peter.wang@mediatek.com> Link: https://lore.kernel.org/r/20250722030841.1998783-2-peter.wang@mediatek.com Reviewed-by: Chun-Hung Wu <chun-hung.wu@mediatek.com> Reviewed-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Ranjan Kumar [Tue, 24 Jun 2025 06:16:49 +0000 (11:46 +0530)]
scsi: Fix sas_user_scan() to handle wildcard and multi-channel scans
sas_user_scan() did not fully process wildcard channel scans
(SCAN_WILD_CARD) when a transport-specific user_scan() callback was
present. Only channel 0 would be scanned via user_scan(), while the
remaining channels were skipped, potentially missing devices.
user_scan() invokes updated sas_user_scan() for channel 0, and if
successful, iteratively scans remaining channels (1 to
shost->max_channel) via scsi_scan_host_selected(). This ensures complete
wildcard scanning without affecting transport-specific scanning behavior.
scsi: target: core: Generate correct identifiers for PR OUT transport IDs
Fix target_parse_pr_out_transport_id() to return a string representing
the transport ID in a human-readable format (e.g., naa.xxxxxxxx...) for
various SCSI protocol types (SAS, FCP, SRP, SBP).
Previously, the function returned a pointer to the raw binary buffer,
which was incorrectly compared against human-readable strings, causing
comparisons to fail. Now, the function writes a properly formatted
string into a buffer provided by the caller. The output format depends
on the transport protocol:
Mike Christie [Mon, 21 Jul 2025 18:51:45 +0000 (13:51 -0500)]
scsi: target: iblock: Allow iblock devices to be shared
We might be running a local application that also interacts with the
backing device. In this setup we have some clustering type of software
that manages the ownwer of it, so we don't want the kernel to restrict
us. This patch allows the user to control if the driver gets exclusive
access.
Seunghui Lee [Thu, 17 Jul 2025 08:12:13 +0000 (17:12 +0900)]
scsi: ufs: core: Use link recovery when h8 exit fails during runtime resume
If the h8 exit fails during runtime resume process, the runtime thread
enters runtime suspend immediately and the error handler operates at the
same time. It becomes stuck and cannot be recovered through the error
handler. To fix this, use link recovery instead of the error handler.
Fixes: 4db7a2360597 ("scsi: ufs: Fix concurrency of error handler and other error recovery paths") Signed-off-by: Seunghui Lee <sh043.lee@samsung.com> Link: https://lore.kernel.org/r/20250717081213.6811-1-sh043.lee@samsung.com Reviewed-by: Bean Huo <beanhuo@micron.com> Acked-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The invocation of iscsi_put_conn() in iscsi_iter_destory_conn_fn() is
used to free the initial reference counter of iscsi_cls_conn. For
non-qla4xxx cases, the ->destroy_conn() callback (e.g.,
iscsi_conn_teardown) will call iscsi_remove_conn() and iscsi_put_conn()
to remove the connection from the children list of session and free the
connection at last. However for qla4xxx, it is not the case. The
->destroy_conn() callback of qla4xxx will keep the connection in the
session conn_list and doesn't use iscsi_put_conn() to free the initial
reference counter. Therefore, it seems necessary to keep the
iscsi_put_conn() in the iscsi_iter_destroy_conn_fn(), otherwise, there
will be memory leak problem.
John Garry [Tue, 15 Jul 2025 11:15:35 +0000 (11:15 +0000)]
scsi: aacraid: Stop using PCI_IRQ_AFFINITY
When PCI_IRQ_AFFINITY is set for calling pci_alloc_irq_vectors(), it
means interrupts are spread around the available CPUs. It also means that
the interrupts become managed, which means that an interrupt is shutdown
when all the CPUs in the interrupt affinity mask go offline.
Using managed interrupts in this way means that we should ensure that
completions should not occur on HW queues where the associated interrupt
is shutdown. This is typically achieved by ensuring only CPUs which are
online can generate IO completion traffic to the HW queue which they are
mapped to (so that they can also serve completion interrupts for that HW
queue).
The problem in the driver is that a CPU can generate completions to a HW
queue whose interrupt may be shutdown, as the CPUs in the HW queue
interrupt affinity mask may be offline. This can cause IOs to never
complete and hang the system. The driver maintains its own CPU <-> HW
queue mapping for submissions, see aac_fib_vector_assign(), but this does
not reflect the CPU <-> HW queue interrupt affinity mapping.
Commit 9dc704dcc09e ("scsi: aacraid: Reply queue mapping to CPUs based on
IRQ affinity") tried to remedy this issue may mapping CPUs properly to HW
queue interrupts. However this was later reverted in commit c5becf57dd56
("Revert "scsi: aacraid: Reply queue mapping to CPUs based on IRQ
affinity") - it seems that there were other reports of hangs. I guess
that this was due to some implementation issue in the original commit or
maybe a HW issue.
Fix the very original hang by just not using managed interrupts by not
setting PCI_IRQ_AFFINITY. In this way, all CPUs will be in each HW queue
affinity mask, so should not create completion problems if any CPUs go
offline.
Signed-off-by: John Garry <john.g.garry@oracle.com> Link: https://lore.kernel.org/r/20250715111535.499853-1-john.g.garry@oracle.com Closes: https://lore.kernel.org/linux-scsi/20250618192427.3845724-1-jmeneghi@redhat.com/ Reviewed-by: John Meneghini <jmeneghi@redhat.com> Tested-by: John Meneghini <jmeneghi@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Showrya M N [Fri, 27 Jun 2025 11:23:29 +0000 (16:53 +0530)]
scsi: libiscsi: Initialize iscsi_conn->dd_data only if memory is allocated
In case of an ib_fast_reg_mr allocation failure during iSER setup, the
machine hits a panic because iscsi_conn->dd_data is initialized
unconditionally, even when no memory is allocated (dd_size == 0). This
leads invalid pointer dereference during connection teardown.
Fix by setting iscsi_conn->dd_data only if memory is actually allocated.
Signed-off-by: Showrya M N <showrya@chelsio.com> Signed-off-by: Potnuri Bharat Teja <bharat@chelsio.com> Link: https://lore.kernel.org/r/20250627112329.19763-1-showrya@chelsio.com Reviewed-by: Chris Leech <cleech@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
scsi: scsi_transport_fc: Add comments to describe added 'rport' parameter
Note that there is no executable code altered by this patch.
Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202507181446.aAoFiDm5-lkp@intel.com/ Signed-off-by: Ewan D. Milne <emilne@redhat.com> Link: https://lore.kernel.org/r/20250721164652.335716-1-emilne@redhat.com Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
jackysliu [Tue, 24 Jun 2025 11:58:24 +0000 (19:58 +0800)]
scsi: bfa: Double-free fix
When the bfad_im_probe() function fails during initialization, the memory
pointed to by bfad->im is freed without setting bfad->im to NULL.
Subsequently, during driver uninstallation, when the state machine enters
the bfad_sm_stopping state and calls the bfad_im_probe_undo() function,
it attempts to free the memory pointed to by bfad->im again, thereby
triggering a double-free vulnerability.
scsi: scsi_transport_fc: Change to use per-rport devloss_work_q
Configurations with large numbers of FC rports per host instance are
taking a very long time to complete all devloss work. Increase potential
parallelism by using a per-rport devloss_work_q for dev_loss_work and
fast_io_fail_work.
André Draszik [Mon, 7 Jul 2025 17:05:27 +0000 (18:05 +0100)]
scsi: ufs: exynos: Fix programming of HCI_UTRL_NEXUS_TYPE
On Google gs101, the number of UTP transfer request slots (nutrs) is 32,
and in this case the driver ends up programming the UTRL_NEXUS_TYPE
incorrectly as 0.
This is because the left hand side of the shift is 1, which is of type
int, i.e. 31 bits wide. Shifting by more than that width results in
undefined behaviour.
Fix this by switching to the BIT() macro, which applies correct type
casting as required. This ensures the correct value is written to
UTRL_NEXUS_TYPE (0xffffffff on gs101), and it also fixes a UBSAN shift
warning:
UBSAN: shift-out-of-bounds in drivers/ufs/host/ufs-exynos.c:1113:21
shift exponent 32 is too large for 32-bit type 'int'
For consistency, apply the same change to the nutmrs / UTMRL_NEXUS_TYPE
write.
Fixes: 55f4b1f73631 ("scsi: ufs: ufs-exynos: Add UFS host support for Exynos SoCs") Cc: stable@vger.kernel.org Signed-off-by: André Draszik <andre.draszik@linaro.org> Link: https://lore.kernel.org/r/20250707-ufs-exynos-shift-v1-1-1418e161ae40@linaro.org Reviewed-by: Bart Van Assche <bvanassche@acm.org> Reviewed-by: Peter Griffin <peter.griffin@linaro.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Ranjan Kumar [Fri, 27 Jun 2025 19:45:38 +0000 (01:15 +0530)]
scsi: mpi3mr: Serialize admin queue BAR writes on 32-bit systems
On 32-bit systems, 64-bit BAR writes to admin queue registers are
performed as two 32-bit writes. Without locking, this can cause partial
writes when accessed concurrently.
Updated per-queue spinlocks is used to serialize these writes and prevent
race conditions.
Ranjan Kumar [Fri, 27 Jun 2025 19:45:36 +0000 (01:15 +0530)]
scsi: mpi3mr: Fix race between config read submit and interrupt completion
The "is_waiting" flag was updated after calling complete(), which could
lead to a race where the waiting thread wakes up before the flag is
cleared. This may cause a missed wakeup or stale state check.
Reorder the operations to update "is_waiting" before signaling completion
to ensure consistent state.
Fixes: 824a156633df ("scsi: mpi3mr: Base driver code") Cc: stable@vger.kernel.org Co-developed-by: Chandrakanth Patil <chandrakanth.patil@broadcom.com> Signed-off-by: Chandrakanth Patil <chandrakanth.patil@broadcom.com> Signed-off-by: Ranjan Kumar <ranjan.kumar@broadcom.com> Link: https://lore.kernel.org/r/20250627194539.48851-2-ranjan.kumar@broadcom.com Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This change is necessary to support the internal clock gating mechanism
in Qualcomm UFS host controller. This is power saving feature and hence
driver can continue to function correctly despite any error in enabling
these feature.
Bao D. Nguyen [Mon, 14 Jul 2025 07:53:34 +0000 (13:23 +0530)]
scsi: ufs: ufs-qcom: Update esi_vec_mask for HW major version >= 6
The MCQ feature and ESI are supported by all Qualcomm UFS controller
versions 6 and above.
Therefore, update the ESI vector mask in the UFS_MEM_CFG3 register for
platforms with major version number of 6 or higher.
Reviewed-by: Manivannan Sadhasivam <mani@kernel.org> Signed-off-by: Bao D. Nguyen <quic_nguyenb@quicinc.com> Signed-off-by: Nitin Rawat <quic_nitirawa@quicinc.com> Link: https://lore.kernel.org/r/20250714075336.2133-2-quic_nitirawa@quicinc.com Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Bart Van Assche [Tue, 24 Jun 2025 21:05:40 +0000 (14:05 -0700)]
scsi: core: Use scsi_cmd_priv() instead of open-coding it
Improve code readability without modifying the behavior of the code.
Cc: Hannes Reinecke <hare@suse.de> Cc: John Garry <john.g.garry@oracle.com> Signed-off-by: Bart Van Assche <bvanassche@acm.org> Link: https://lore.kernel.org/r/20250624210541.512910-4-bvanassche@acm.org Reviewed-by: John Garry <john.g.garry@oracle.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The historic QLogic firmware URL redirects to a Marvell page that only
provides drivers.
Refer to linux-firmware instead.
Cc: Nilesh Javali <njavali@marvell.com> Cc: James E.J. Bottomley <James.Bottomley@HansenPartnership.com> Cc: Martin K. Petersen <martin.petersen@oracle.com> Cc: QLOGIC ML <GR-QLogic-Storage-Upstream@marvell.com> Cc: LINUX SCSI ML <linux-scsi@vger.kernel.org> Signed-off-by: Xose Vazquez Perez <xose.vazquez@gmail.com> Link: https://lore.kernel.org/r/20250624190926.115009-1-xose.vazquez@gmail.com Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Bart Van Assche [Mon, 23 Jun 2025 21:59:01 +0000 (14:59 -0700)]
scsi: ufs: core: Improve return value documentation
Some functions return a negative value to indicate an error while other
functions return a value != 0 to indicate an error. Document the return
value behavior where this documentation is missing and fix the return
value documentation where necessary. Add warnings to detect mismatches
between documentation and implementation. This matters because several
sysfs callback functions only work correctly if a negative value is
returned upon error.
mrigendrachaubey [Sun, 22 Jun 2025 05:57:09 +0000 (11:27 +0530)]
scsi: scsi_devinfo: Remove redundant 'found'
Remove the unnecessary 'found' flag in scsi_devinfo_lookup_by_key(). The
loop can return the matching entry directly when found, and fall through
to return ERR_PTR(-EINVAL) otherwise.
Arnd Bergmann [Fri, 20 Jun 2025 17:32:22 +0000 (19:32 +0200)]
scsi: qla2xxx: Avoid stack frame size warning in qla_dfs
The qla2x00_dfs_tgt_port_database_show() function constructs a fake
fc_port_t object on the stack, which--depending on the configuration--is
large enough to exceed the stack size warning limit:
Rework this function to no longer need the structure but instead call a
custom helper function that just prints the data directly from the
port_database_24xx structure.
Randy Dunlap [Fri, 20 Jun 2025 16:21:58 +0000 (09:21 -0700)]
scsi: mpi3mr: Fix kernel-doc issues in mpi3mr_app.c
Fix all kernel-doc problems in mpi3mr_app.c:
mpi3mr_app.c:809: warning: Excess function parameter 'data' description in 'mpi3mr_set_trigger_data_in_hdb'
mpi3mr_app.c:836: warning: Excess function parameter 'data' description in 'mpi3mr_set_trigger_data_in_all_hdb'
mpi3mr_app.c:3395: warning: No description found for return value of 'sas_ncq_prio_supported_show'
mpi3mr_app.c:3413: warning: No description found for return value of 'sas_ncq_prio_enable_show'
Fixes: fc4444941140 ("scsi: mpi3mr: HDB allocation and posting for hardware and firmware buffers") Fixes: d8d08d1638ce ("scsi: mpi3mr: Trigger support") Fixes: 90e6f08915ec ("scsi: mpi3mr: Fix ATA NCQ priority support") Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Link: https://lore.kernel.org/r/20250620162158.776795-1-rdunlap@infradead.org Cc: Sathya Prakash <sathya.prakash@broadcom.com> Cc: Kashyap Desai <kashyap.desai@broadcom.com> Cc: Sumit Saxena <sumit.saxena@broadcom.com> Cc: Sreekanth Reddy <sreekanth.reddy@broadcom.com> Cc: Ranjan Kumar <ranjan.kumar@broadcom.com> Cc: mpi3mr-linuxdrv.pdl@broadcom.com Cc: Damien Le Moal <dlemoal@kernel.org> Cc: James E.J. Bottomley <James.Bottomley@HansenPartnership.com> Cc: Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by: Damien Le Moal <dlemoal@kernel.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Add pm80xx_fatal_error_uevent_emit() which is called when the pm80xx
driver encouters a fatal error. The uevent has the following additional
custom key/value pair sets:
- DRIVER: driver name, pm80xx in this case
- HBA_NUM: the scsi host id of the device
- EVENT_TYPE: to indicate a fatal error
- REPORTED_BY: either driver or firmware
The uevent is anchored to the kernel object that represents the SCSI
controller, which includes other useful core variables, such as, ACTION,
DEVPATH, SUBSYSTEM, and more.
The fatal_error_uevent_emit() function is called when the controller
fatal error state changes. Since this doesn't happen often for a
specific SCSI host, there is no worries of a uevent storm.
Merge patch series "Update lpfc to revision 14.4.0.10"
Justin Tee <justintee8345@gmail.com> says:
Update lpfc to revision 14.4.0.10
This patch set contains bug fixes related to diagnostic log messaging,
driver initialization and removal, updates to mailbox command handling,
and string modifications for obsolete adapter model descriptions.
The patches were cut against Martin's 6.17/scsi-queue tree.
Justin Tee [Wed, 18 Jun 2025 19:21:36 +0000 (12:21 -0700)]
scsi: lpfc: Modify end-of-life adapters' model descriptions
Obsolete adapters' model description strings are updated to indicate that
they are no longer supported. End-of-life adapters will still remain
probed by the lpfc driver based on PCI id.
The CQ_CREATE_SET mailbox command's bitfields are updated. Rename the
cqe_cnt and separate high/low bitfield names to help resolve confusion
between two similar bitfield definitions. Corresponding usages of the
newly defined bitfields are updated as well.
Justin Tee [Wed, 18 Jun 2025 19:21:34 +0000 (12:21 -0700)]
scsi: lpfc: Move clearing of HBA_SETUP flag to before lpfc_sli4_queue_unset
Move clearing of HBA_SETUP flag out of lpfc_sli_brdrestart_s4 and before
lpfc_sli4_queue_unset. lpfc_sli4_queue_unset kfrees phba queues, so
clear the HBA_SETUP atomic flag to signal that the phba struct is no
longer initialized.
Also, add a check for the HBA_SETUP flag in the lpfc_sli4_io_xri_aborted
routine before dereferencing the ELS WQ.
Justin Tee [Wed, 18 Jun 2025 19:21:33 +0000 (12:21 -0700)]
scsi: lpfc: Ensure HBA_SETUP flag is used only for SLI4 in dev_loss_tmo_callbk
For SLI3, the HBA_SETUP flag is never set so the lpfc_dev_loss_tmo_callbk
always early returns. Add a phba->sli_rev check for SLI4 mode so that
the SLI3 path can flow through the original dev_loss_tmo worker thread
design to lpfc_dev_loss_tmo_handler instead of early return.
Justin Tee [Wed, 18 Jun 2025 19:21:32 +0000 (12:21 -0700)]
scsi: lpfc: Relocate clearing initial phba flags from link up to link down hdlr
Port wide initialization flags FLOGI_ISSUED and RHBA_CMPL make more sense
to be cleared upon a link down event rather than waiting for a link up
event. By moving clearing of these initializatin flags to a link down
handler, future confusion on the state of initialization is avoided.
Justin Tee [Wed, 18 Jun 2025 19:21:31 +0000 (12:21 -0700)]
scsi: lpfc: Simplify error handling for failed lpfc_get_sli4_parameters cmd
There are unnecessary checks on an HBA's interface type and family before
erroring out a failed lpfc_get_sli4_parameters mailbox command. Simplify
the error handling by logging a message and proceeding to memory free
labels.
Justin Tee [Wed, 18 Jun 2025 19:21:30 +0000 (12:21 -0700)]
scsi: lpfc: Early return out of FDMI cmpl for locally rejected statuses
If an FDMI request completes with local reject status and the request is
not retryable, there's no need to parse an FDMI response payload. Insert
an early return statement for such cases.
Justin Tee [Wed, 18 Jun 2025 19:21:29 +0000 (12:21 -0700)]
scsi: lpfc: Skip RSCN processing when FC_UNLOADING flag is set
During rmmod, all ndlp objects are cleaned up and marked with the
NLP_DROPPED flag indicating that an ndlp object is currently being
released. Thus, if an RSCN is received during driver unload, then
walking the fc_nodes list to process the RSCN is unnecessary because the
ndlp objects are very shortly going to be released.
In the lpfc_rscn_recovery_check routine, early return if the driver is in
the middle of unloading by checking for the FC_UNLOADING flag.
Justin Tee [Wed, 18 Jun 2025 19:21:28 +0000 (12:21 -0700)]
scsi: lpfc: Check for hdwq null ptr when cleaning up lpfc_vport structure
If a call to lpfc_sli4_read_rev() from lpfc_sli4_hba_setup() fails, the
resultant cleanup routine lpfc_sli4_vport_delete_fcp_xri_aborted() may
occur before sli4_hba.hdwqs are allocated. This may result in a null
pointer dereference when attempting to take the abts_io_buf_list_lock for
the first hardware queue. Fix by adding a null ptr check on
phba->sli4_hba.hdwq and early return because this situation means there
must have been an error during port initialization.
Justin Tee [Wed, 18 Jun 2025 19:21:27 +0000 (12:21 -0700)]
scsi: lpfc: Update debugfs trace ring initialization messages
Initialization parameters for trace rings used in debugfs are sometimes
automatically adjusted. This patch corrects and updates the
corresponding log messages.
Damien Le Moal [Fri, 6 Jun 2025 05:27:47 +0000 (14:27 +0900)]
scsi: mpt3sas: Correctly handle ATA device errors
With the ATA error model, an NCQ command failure always triggers an abort
(termination) of all NCQ commands queued on the device. In such case, the
SAT or the host must handle the failed command according to the command
sense data and immediately retry all other NCQ commands that were aborted
due to the failed NCQ command.
For SAS HBAs controlled by the mpt3sas driver, NCQ command aborts are not
handled by the HBA SAT and sent back to the host, with an ioc log
information equal to 0x31080000 (IOC_LOGINFO_PREFIX_PL with the PL code
PL_LOGINFO_CODE_SATA_NCQ_FAIL_ALL_CMDS_AFTR_ERR). The function
_scsih_io_done() always forces a retry of commands terminated with the
status MPI2_IOCSTATUS_SCSI_IOC_TERMINATED using the SCSI result
DID_SOFT_ERROR, regardless of the log_info for the command. This
correctly forces the retry of collateral NCQ abort commands, but with the
retry counter for the command being incremented. If a command to an ATA
device is subject to too many retries due to other NCQ commands failing
(e.g. read commands trying to access unreadable sectors), the collateral
NCQ abort commands may be terminated with an error as they run out of
retries. This violates the SAT specification and causes hard-to-debug
command errors.
Solve this issue by modifying the handling of the
MPI2_IOCSTATUS_SCSI_IOC_TERMINATED status to check if a command is for an
ATA device and if the command loginfo indicates an NCQ collateral
abort. If that is the case, force the command retry using the SCSI result
DID_IMM_RETRY to avoid incrementing the command retry count.
Damien Le Moal [Fri, 6 Jun 2025 05:27:46 +0000 (14:27 +0900)]
scsi: mpi3mr: Correctly handle ATA device errors
With the ATA error model, an NCQ command failure always triggers an abort
(termination) of all NCQ commands queued on the device. In such case, the
SAT or the host must handle the failed command according to the command
sense data and immediately retry all other NCQ commands that were aborted
due to the failed NCQ command.
For SAS HBAs controlled by the mpi3mr driver, NCQ command aborts are not
handled by the HBA SAT and sent back to the host, with an ioc log
information equal to 0x31080000 (IOC_LOGINFO_PREFIX_PL with the PL code
PL_LOGINFO_CODE_SATA_NCQ_FAIL_ALL_CMDS_AFTR_ERR). The function
mpi3mr_process_op_reply_desc() always forces a retry of commands
terminated with the status MPI3_IOCSTATUS_SCSI_IOC_TERMINATED using the
SCSI result DID_SOFT_ERROR, regardless of the ioc_loginfo for the
command. This correctly forces the retry of collateral NCQ abort
commands, but with the retry counter for the command being incremented.
If a command to an ATA device is subject to too many retries due to other
NCQ commands failing (e.g. read commands trying to access unreadable
sectors), the collateral NCQ abort commands may be terminated with an
error as they run out of retries. This violates the SAT specification and
causes hard-to-debug command errors.
Solve this issue by modifying the handling of the
MPI3_IOCSTATUS_SCSI_IOC_TERMINATED status to check if a command is for an
ATA device and if the command ioc_loginfo indicates an NCQ collateral
abort. If that is the case, force the command retry using the SCSI result
DID_IMM_RETRY to avoid incrementing the command retry count.
Thomas Weißschuh [Wed, 11 Jun 2025 09:58:06 +0000 (11:58 +0200)]
scsi: Don't use %pK through printk()
In the past %pK was preferable to %p as it would not leak raw pointer
values into the kernel log. Since commit ad67b74d2469 ("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.
Damien Le Moal [Wed, 11 Jun 2025 09:34:21 +0000 (18:34 +0900)]
scsi: core: Remember if a device is an ATA device
scsi_add_lun() tests the device vendor string of SCSI devices to detect
if a SCSI device is in fact an ATA device, in order to correctly handle
SATL power management. The function scsi_cdl_enable() also requires
knowing if a SCSI device is an ATA device to control the state of the
device CDL feature but this function does that by testing for the
presence of the VPD page 89h (ATA INFORMATION page).
sd_read_write_same() also has a similar test.
Simplify these different methods by adding the is_ata field to struct
scsi_device to remember that a SCSI device is in fact an ATA one based
on the device vendor name test. This field can also allow low level
SCSI host adapter drivers to take special actions for ATA devices
(e.g. to better handle ATA NCQ errors).
With this, simplify scsi_cdl_enable() and sd_read_write_same().
André Draszik [Fri, 6 Jun 2025 15:29:43 +0000 (16:29 +0100)]
scsi: mpt3sas: Drop unused variable in mpt3sas_send_mctp_passthru_req()
With W=1, gcc complains correctly:
mpt3sas_ctl.c: In function ‘mpt3sas_send_mctp_passthru_req’:
mpt3sas_ctl.c:2917:29: error: variable ‘mpi_reply’ set but not used [-Werror=unused-but-set-variable]
2917 | MPI2DefaultReply_t *mpi_reply;
| ^~~~~~~~~
However, these numbers are not particularly helpful wrt. debugging
errors. Especially since the kernel code consistently uses the following
defines in hexadecimal:
The detailed definition of the six nodes can be found in the sysfs
documentation.
HID's execution policy is given to user-space.
Signed-off-by: Huan Tang <tanghuan@vivo.com> Signed-off-by: Wenxing Cheng <wenxing.cheng@vivo.com> Link: https://lore.kernel.org/r/20250523064604.800-1-tanghuan@vivo.com Suggested-by: Bart Van Assche <bvanassche@acm.org> Reviewed-by: Peter Wang <peter.wang@mediatek.com> Reviewed-by: Bean Huo <huobean@gmail.com> Reviewed-by: Bart Van Assche <bvanassche@acm.org> Reviewed-by: Yangtao Li <frank.li@vivo.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Alok Tiwari [Sat, 7 Jun 2025 16:22:56 +0000 (09:22 -0700)]
scsi: fc_transport: docs: Add documentation for FC Remote Ports
This patch updates the scsi_fc_transport.rst documentation by replacing
the outdated << To Be Supplied >> placeholder under the "FC Remote Ports
(rports)" section with a detailed explanation of remote port
functionality in the Fibre Channel (FC) transport class.
The new documentation covers:
- What rports are and their role in FC-based SCSI communication
- Their representation in sysfs (/sys/class/fc_remote_ports/)
- Common sysfs attributes such as (port_id, port_name, node_name, and
port_state).
- Their typical lifecycle (creation and removal)
- Guidance for driver developers on using fc_remote_port_add() and
fc_remote_port_delete()
This change improves the completeness and usefulness of the FC transport
documentation for developers and users interacting with Fibre Channel
drivers in the Linux SCSI subsystem
Hannes Reinecke [Thu, 5 Jun 2025 06:20:14 +0000 (08:20 +0200)]
scsi: fcoe: Remove fcoe_select_cpu()
The function fcoe_select_cpu() is just used to distribute incoming skbs
which start a new FC command sequence. But the network stack already
received (and processed) that skb, and there is a _really_ good chance
that all subsequent skbs for this sequence will be handled with the same
CPU. So we should just use the CPU on which this skb was allocated on and
save ourselves some overhead due to pointless scheduling.
Linus Torvalds [Sun, 8 Jun 2025 18:33:00 +0000 (11:33 -0700)]
Merge tag 'timers-cleanups-2025-06-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer cleanup from Thomas Gleixner:
"The delayed from_timer() API cleanup:
The renaming to the timer_*() namespace was delayed due massive
conflicts against Linux-next. Now that everything is upstream finish
the conversion"
* tag 'timers-cleanups-2025-06-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
treewide, timers: Rename from_timer() to timer_container_of()
Linus Torvalds [Sun, 8 Jun 2025 18:27:20 +0000 (11:27 -0700)]
Merge tag 'x86-urgent-2025-06-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Thomas Gleixner:
"A small set of x86 fixes:
- Cure IO bitmap inconsistencies
A failed fork cleans up all resources of the newly created thread
via exit_thread(). exit_thread() invokes io_bitmap_exit() which
does the IO bitmap cleanups, which unfortunately assume that the
cleanup is related to the current task, which is obviously bogus.
Make it work correctly
- A lockdep fix in the resctrl code removed the clearing of the
command buffer in two places, which keeps stale error messages
around. Bring them back.
- Remove unused trace events"
* tag 'x86-urgent-2025-06-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
fs/resctrl: Restore the rdt_last_cmd_clear() calls after acquiring rdtgroup_mutex
x86/iopl: Cure TIF_IO_BITMAP inconsistencies
x86/fpu: Remove unused trace events
Zhang Rui [Fri, 30 May 2025 00:09:28 +0000 (08:09 +0800)]
tools/power turbostat: Avoid probing the same perf counters
For the RAPL package energy status counter, Intel and AMD share the same
perf_subsys and perf_name, but with different MSR addresses.
Both rapl_counter_arch_infos[0] and rapl_counter_arch_infos[1] are
introduced to describe this counter for different Vendors.
As a result, the perf counter is probed twice, and causes a failure in
in get_rapl_counters() because expected_read_size and actual_read_size
don't match.
Fix the problem by skipping the already probed counter.
Note, this is not a perfect fix. For example, if different
vendors/platforms use the same MSR value for different purpose, the code
can be fooled when it probes a rapl_counter_arch_infos[] entry that does
not belong to the running Vendor/Platform.
In a long run, better to put rapl_counter_arch_infos[] into the
platform_features so that this becomes Vendor/Platform specific.
Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
Zhang Rui [Sat, 17 May 2025 09:44:50 +0000 (17:44 +0800)]
tools/power turbostat: Allow probing RAPL with platform_features->rapl_msrs cleared
platform_features->rapl_msrs describes the RAPL MSRs supported. While
RAPL Perf counters can be exposed from different kernel backend drivers,
e.g. RAPL MSR I/F driver, or RAPL TPMI I/F driver.
Thus, turbostat should first blindly probe all the available RAPL Perf
counters, and falls back to the RAPL MSR counters if they are listed in
platform_features->rapl_msrs.
With this, platforms that don't have RAPL MSRs can clear the
platform_features->rapl_msrs bits and use RAPL Perf counters only.
Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
probe_rapl_msr() is reused for probing RAPL MSR counters, cstate MSR
counters and MPERF/APERF/SMI MSR counters, thus its name is misleading.
Similar to add_perf_counter(), introduce add_msr_counter() to probe a
counter via MSR. Introduce wrapper function add_rapl_msr_counter() at
the same time to add extra check for Zero return value for specified
RAPL counters.
No functional change intended.
Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
As the only caller of add_cstate_perf_counter_(),
add_cstate_perf_counter() just gives extra debug output on top. There is
no need to keep both functions.
Remove add_cstate_perf_counter_() and move all the logic to
add_cstate_perf_counter().
No functional change.
Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
projects / thirdparty / kernel / linux.git / log
