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The ata_sas_port_alloc() wrapper mainly exists in order to export the
internal libata function which it wraps. The secondary reason is that
it initializes some ata_port struct members.
However, ata_sas_port_alloc() is only used in a single location,
sas_ata_init(), which already performs some ata_port struct member
initialization, so it does not make sense to spread this initialization
out over two separate locations.
Thus, remove the wrapper and instead export the libata function directly,
and move the libsas specific ata_port initialization to sas_ata_init(),
which already does some ata_port initialization.
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: John Garry <john.g.garry@oracle.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Link: https://lore.kernel.org/r/20240703184418.723066-19-cassel@kernel.org
Signed-off-by: Niklas Cassel <cassel@kernel.org>
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While the assignment of ap->print_id could have been moved to
ata_host_alloc(), let's simply move it to ata_port_alloc().
If you allocate a port, you want to give it a unique name that can be used
for printing.
By moving the ap->print_id assignment to ata_port_alloc(), means that we
can also remove the ap->print_id assignment from ata_sas_port_alloc().
This will allow a LLD to use the ata_port_*() print functions before
ata_host_register() has been called.
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Link: https://lore.kernel.org/r/20240703184418.723066-17-cassel@kernel.org
Signed-off-by: Niklas Cassel <cassel@kernel.org>
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ata_sas_port_alloc() calls ata_port_alloc() which already assigns ap->lock
so there is no need for ata_sas_port_alloc() to assign it again.
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Link: https://lore.kernel.org/r/20240703184418.723066-15-cassel@kernel.org
Signed-off-by: Niklas Cassel <cassel@kernel.org>
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The ata_sas_tport_add() and ata_sas_tport_delete() wrappers only exist in
order to export the internal libata functions which they wrap.
Remove the wrappers and instead export the libata functions directly.
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: John Garry <john.g.garry@oracle.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Link: https://lore.kernel.org/r/20240703184418.723066-12-cassel@kernel.org
Signed-off-by: Niklas Cassel <cassel@kernel.org>
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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>
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Export libata NCQ Priority configuration helpers to be reused for libsas
managed SATA devices.
Switched locking from spin_lock_irq() to spin_lock_irqsave(). In the
future someone might call these helper functions when interrupts are
disabled. spin_unlock_irq() could lead to a premature re-enabling of
interrupts, whereas spin_unlock_irqrestore() restores the interrupt state
to its condition prior to the spin_lock_irqsave() call.
Acked-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/20240307214418.3812290-2-ipylypiv@google.com
Reviewed-by: Niklas Cassel <cassel@kernel.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Currently, both ATA_LPM_UNKNOWN (0) and ATA_LPM_MAX_POWER (1) displays
as "max_performance" in sysfs.
This is quite misleading as they are not the same.
For ATA_LPM_UNKNOWN, ata_eh_set_lpm() will not be called at all,
leaving the configuration in unknown state.
For ATA_LPM_MAX_POWER, ata_eh_set_lpm() is called, and setting the
policy to ATA_LPM_MAX_POWER.
This also matches the description of the SATA_MOBILE_LPM_POLICY Kconfig:
0 => Keep firmware settings
1 => Maximum performance
Thus, update the sysfs description for ATA_LPM_UNKNOWN to match reality.
While at it, update libata.h to mention that the ascii descriptions
are in libata-sata.c and not in libata-scsi.c.
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Signed-off-by: Niklas Cassel <cassel@kernel.org>
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Some drives are really slow to spinup on resume, resulting is a very
slow response to COMRESET and to error messages such as:
ata1: COMRESET failed (errno=-16)
ata1: link is slow to respond, please be patient (ready=0)
ata1: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
ata1.00: configured for UDMA/133
Given that the slowness of the response is indicated with the message
"link is slow to respond..." and that resets are retried until the
device is detected as online after up to 1min (ata_eh_reset_timeouts),
there is no point in printing the "COMRESET failed" error message. Let's
not scare the user with non fatal errors and only warn about reset
failures in ata_eh_reset() when all reset retries have been exhausted.
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Tested-by: Chia-Lin Kao (AceLan) <acelan.kao@canonical.com>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
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Change ata_sas_slave_configure() to return the return value of
ata_scsi_dev_config() to ensure that any error from that function is
propagated to libsas.
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: John Garry <john.g.garry@oracle.com>
Tested-by: Chia-Lin Kao (AceLan) <acelan.kao@canonical.com>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
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In AHCI 1.3.1, the register description for CAP.SSC:
"When cleared to ‘0’, software must not allow the HBA to initiate
transitions to the Slumber state via agressive link power management nor
the PxCMD.ICC field in each port, and the PxSCTL.IPM field in each port
must be programmed to disallow device initiated Slumber requests."
In AHCI 1.3.1, the register description for CAP.PSC:
"When cleared to ‘0’, software must not allow the HBA to initiate
transitions to the Partial state via agressive link power management nor
the PxCMD.ICC field in each port, and the PxSCTL.IPM field in each port
must be programmed to disallow device initiated Partial requests."
Ensure that we always set the corresponding bits in PxSCTL.IPM, such that
a device is not allowed to initiate transitions to power states which are
unsupported by the HBA.
DevSleep is always initiated by the HBA, however, for completeness, set the
corresponding bit in PxSCTL.IPM such that agressive link power management
cannot transition to DevSleep if DevSleep is not supported.
sata_link_scr_lpm() is used by libahci, ata_piix and libata-pmp.
However, only libahci has the ability to read the CAP/CAP2 register to see
if these features are supported. Therefore, in order to not introduce any
regressions on ata_piix or libata-pmp, create flags that indicate that the
respective feature is NOT supported. This way, the behavior for ata_piix
and libata-pmp should remain unchanged.
This change is based on a patch originally submitted by Runa Guo-oc.
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Fixes: 1152b2617a6e ("libata: implement sata_link_scr_lpm() and make ata_dev_set_feature() global")
Cc: stable@vger.kernel.org
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
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ata_sas_port_init() now only contains a single initialization.
Move this single initialization to ata_sas_port_alloc(), since:
1) ata_sas_port_alloc() already initializes some of the struct members.
2) ata_sas_port_alloc() is only used by libsas.
Suggested-by: John Garry <john.g.garry@oracle.com>
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Reviewed-by: John Garry <john.g.garry@oracle.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
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Rename __ata_port_probe() to ata_port_probe() and drop the wrapper
ata_sas_async_probe().
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Reviewed-by: Jason Yan <yanaijie@huawei.com>
Reviewed-by: John Garry <john.g.garry@oracle.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
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Unused.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Reviewed-by: Jason Yan <yanaijie@huawei.com>
Reviewed-by: John Garry <john.g.garry@oracle.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
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Is now a wrapper around kfree(), so call it directly.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Reviewed-by: John Garry <john.g.garry@oracle.com>
Reviewed-by: Jason Yan <yanaijie@huawei.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
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Callbacks are empty now, so remove them.
Also, remove the call to ap->ops->port_start() in ata_sas_port_init(),
as this would otherwise cause a NULL pointer dereference, now when the
callback is gone.
Signed-off-by: Hannes Reinecke <hare@suse.de>
[niklas: remove the call to ap->ops->port_start() in ata_sas_port_init()]
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Reviewed-by: Jason Yan <yanaijie@huawei.com>
Reviewed-by: John Garry <john.g.garry@oracle.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
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With commit 65a15d6560df ("scsi: ipr: Remove SATA support") all
libata drivers now have the error_handler() callback provided,
so we can stop checking for non-existing error_handler callback.
Signed-off-by: Hannes Reinecke <hare@suse.de>
[niklas: fixed review comments, rebased, solved conflicts during rebase,
fixed bug that unconditionally dumped all QCs, removed the now unused
function ata_dump_status(), removed the now unreachable failure paths in
atapi_qc_complete(), removed the non-EH function to request ATAPI sense]
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Reviewed-by: John Garry <john.g.garry@oracle.com>
Reviewed-by: Jason Yan <yanaijie@huawei.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
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sata_deb_timing_{hotplug|long|normal}[] store 'unsigned long' debounce
timeouts in ms, while sata_link_debounce() eventually uses those timeouts
by calling ata_{deadline|msleep}( which take just 'unsigned int'. Change
the debounce timeout table element's type to 'unsigned int' -- all these
timeouts happily fit into 'unsigned int'...
Signed-off-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
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Pull SCSI updates from James Bottomley:
"Updates to the usual drivers (ufs, pm80xx, libata-scsi, smartpqi,
lpfc, qla2xxx).
We have a couple of major core changes impacting other systems:
- Command Duration Limits, which spills into block and ATA
- block level Persistent Reservation Operations, which touches block,
nvme, target and dm
Both of these are added with merge commits containing a cover letter
explaining what's going on"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (187 commits)
scsi: core: Improve warning message in scsi_device_block()
scsi: core: Replace scsi_target_block() with scsi_block_targets()
scsi: core: Don't wait for quiesce in scsi_device_block()
scsi: core: Don't wait for quiesce in scsi_stop_queue()
scsi: core: Merge scsi_internal_device_block() and device_block()
scsi: sg: Increase number of devices
scsi: bsg: Increase number of devices
scsi: qla2xxx: Remove unused nvme_ls_waitq wait queue
scsi: ufs: ufs-pci: Add support for Intel Arrow Lake
scsi: sd: sd_zbc: Use PAGE_SECTORS_SHIFT
scsi: ufs: wb: Add explicit flush_threshold sysfs attribute
scsi: ufs: ufs-qcom: Switch to the new ICE API
scsi: ufs: dt-bindings: qcom: Add ICE phandle
scsi: ufs: ufs-mediatek: Set UFSHCD_QUIRK_MCQ_BROKEN_RTC quirk
scsi: ufs: ufs-mediatek: Set UFSHCD_QUIRK_MCQ_BROKEN_INTR quirk
scsi: ufs: core: Add host quirk UFSHCD_QUIRK_MCQ_BROKEN_RTC
scsi: ufs: core: Add host quirk UFSHCD_QUIRK_MCQ_BROKEN_INTR
scsi: ufs: core: Remove dedicated hwq for dev command
scsi: ufs: core: mcq: Fix the incorrect OCS value for the device command
scsi: ufs: dt-bindings: samsung,exynos: Drop unneeded quotes
...
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ata_change_queue_depth() implements different behaviors for ATA devices
managed by libsas than for those managed by libata directly.
Specifically, if a user attempts to set a device queue depth to a value
larger than 32 (ATA_MAX_QUEUE), the queue depth is capped to the maximum
and set to 32 for libsas managed devices whereas for libata managed
devices, the queue depth is unchanged and an error returned to the user.
This is due to the fact that for libsas devices, sdev->host->can_queue
may indicate the host (HBA) maximum number of commands that can be
queued rather than the device maximum queue depth.
Change ata_change_queue_depth() to provide a consistent behavior for all
devices by changing the queue depth capping code to a check that the
user provided value does not exceed the device maximum queue depth.
This check is moved before the code clearing or setting the
ATA_DFLAG_NCQ_OFF flag to ensure that this flag is not modified when an
invlaid queue depth is provided.
While at it, two other small improvements are added:
1) Use ata_ncq_supported() instead of ata_ncq_enabled() and clear the
ATA_DFLAG_NCQ_OFF flag only and only if needed.
2) If the user provided queue depth is equal to the current queue depth,
do not return an error as that is useless.
Overall, the behavior of ata_change_queue_depth() for libata managed
devices is unchanged. The behavior with libsas managed devices becomes
consistent with libata managed devices.
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: John Garry <john.g.garry@oracle.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
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Commit 141f3d6256e5 ("ata: libata-sata: Fix device queue depth control")
added a struct ata_device argument to ata_change_queue_depth() to
address problems with changing the queue depth of ATA devices managed
through libsas. This was due to problems with ata_scsi_find_dev() which
are now fixed with commit 7f875850f20a ("ata: libata-scsi: Use correct
device no in ata_find_dev()").
Undo some of the changes of commit 141f3d6256e5: remove the added struct
ata_device aregument and use again ata_scsi_find_dev() to find the
target ATA device structure. While doing this, also make sure that
ata_scsi_find_dev() is called with ap->lock held, as it should.
libsas and libata call sites of ata_change_queue_depth() are updated to
match the modified function arguments.
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Jason Yan <yanaijie@huawei.com>
Reviewed-by: John Garry <john.g.garry@oracle.com>
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A CDL timeout for policy 0xF is defined as a NCQ error, just with a CDL
specific sk/asc/ascq in the sense data. Therefore, the existing code in
libata does not need to be modified to handle a policy 0xF CDL timeout.
For Command Duration Limits policy 0xD:
The device shall complete the command without error with the additional
sense code set to DATA CURRENTLY UNAVAILABLE.
Since a CDL timeout for policy 0xD is not an error, we cannot use the NCQ
Command Error log (10h).
Instead, we need to read the Sense Data for Successful NCQ Commands log
(0Fh).
In the success case, just like in the error case, we cannot simply read a
log page from the interrupt handler itself, since reading a log page
involves sending a READ LOG DMA EXT or READ LOG EXT command.
Therefore, we add a new EH action ATA_EH_GET_SUCCESS_SENSE. When a command
completes without error, and when the ATA_SENSE bit is set, this new action
is set as pending, and EH is scheduled.
This way, similar to the NCQ error case, the log page will be read from EH
context.
An alternative would have been to add a new kthread or workqueue to handle
this. However, extending EH can be done with minimal changes and avoids the
need to synchronize a new kthread/workqueue with EH.
Co-developed-by: Damien Le Moal <dlemoal@kernel.org>
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Link: https://lore.kernel.org/r/20230511011356.227789-20-nks@flawful.org
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Add support for the ATA feature control sub-page of the control mode page
to enable/disable the command duration limits feature using the cdl_ctrl
field of the ATA feature control sub-page.
Both mode sense and mode select translation are supported. For mode sense,
the ata device flag ATA_DFLAG_CDL_ENABLED is used to cache the status of
the command duration limits feature. Enabling this feature is done using a
SET FEATURES command with a cdl action set to 1 when the page cdl_ctrl
field value is 0x2 (T2A and T2B pages supported). If this field is 0, CDL
is disabled using the SET FEATURES command with a cdl action set to 0.
Since a device CDL and NCQ priority features should not be used
simultaneously, ata_mselect_control_ata_feature() returns an error when
attempting to enable CDL with the device priority feature enabled.
Conversely, the function ata_ncq_prio_enable_store() used to enable the use
of the device NCQ priority feature through sysfs is modified to return an
error if the device CDL feature is enabled.
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Co-developed-by: Niklas Cassel <niklas.cassel@wdc.com>
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Link: https://lore.kernel.org/r/20230511011356.227789-18-nks@flawful.org
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Currently, the status is being read for each QC, inside
ata_qc_complete(), which means that QCs being completed by
ata_qc_complete_multiple() (i.e. multiple QCs completed during a single
interrupt), can have different status and error bits set. This is
because the FIS Receive Area will get updated as soon as the HBA
receives a new FIS from the device in the NCQ case.
Here is an example of the problem:
ata14.00: ata_qc_complete_multiple: done_mask: 0x180000
qc tag: 19 cmd: 0x61 flags: 0x11b err_mask: 0x0 tf->status: 0x40
qc tag: 20 cmd: 0x61 flags: 0x11b err_mask: 0x0 tf->status: 0x43
A print in ata_qc_complete_multiple(), shows that done_mask is: 0x180000
which means that tag 19 and 20 were completed. Another print in
ata_qc_complete(), after the call to fill_result_tf(), shows that tag 19
and 20 have different status values, even though they were completed in
the same ata_qc_complete_multiple() call.
If PMP is not enabled, simply read the status and error once, before
calling ata_qc_complete() for each QC. Without PMP, we know that all QCs
must share the same status and error values.
If PMP is enabled, we also read the status before calling
ata_qc_complete(), however, we still read the status for each QC, since
the QCs can belong to different PMP links (which means that the QCs
does not necessarily share the same status and error values).
Do all this by introducing the new port operation .qc_ncq_fill_rtf. If
set, this operation is called in ata_qc_complete_multiple() to set the
result tf for all completed QCs signaled by the last SDB FIS received.
QCs that have their result tf filled are marked with the new flag
ATA_QCFLAG_RTF_FILLED so that any later execution of the qc_fill_rtf
port operation does nothing (e.g. when called from ata_qc_complete()).
Co-developed-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
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The name ATA_QCFLAG_FAILED is misleading since it does not mean that a
QC completed in error, or that it didn't complete at all. It means that
libata decided to schedule EH for the QC, so the QC is now owned by the
libata error handler (EH).
The normal execution path is responsible for not accessing a QC owned
by EH. libata core enforces the rule by returning NULL from
ata_qc_from_tag() for QCs owned by EH.
It is quite easy to mistake that a QC marked with ATA_QCFLAG_FAILED was
an error. However, a QC that was actually an error is instead indicated
by having qc->err_mask set. E.g. when we have a NCQ error, we abort all
QCs, which currently will mark all QCs as ATA_QCFLAG_FAILED. However, it
will only be a single QC that is an error (i.e. has qc->err_mask set).
Rename ATA_QCFLAG_FAILED to ATA_QCFLAG_EH to more clearly highlight that
this flag simply means that a QC is now owned by EH. This new name will
not mislead to think that the QC was an error (which is instead
indicated by having qc->err_mask set).
This also makes it more obvious that the EH code skips all QCs that do
not have ATA_QCFLAG_EH set (rather than ATA_QCFLAG_FAILED), since the EH
code should simply only care about QCs that are owned by EH itself.
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Reviewed-by: John Garry <john.g.garry@oracle.com>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
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A NCQ error means that the device has aborted processing of all active
commands.
To get the single NCQ command that caused the NCQ error, host software has
to read the NCQ error log, which also takes the device out of error state.
When the device encounters a NCQ error, we receive an error interrupt from
the HBA, and call ata_do_link_abort() to mark all outstanding commands on
the link as ATA_QCFLAG_FAILED (which means that these commands are owned
by libata EH), and then call ata_qc_complete() on them.
ata_qc_complete() will call fill_result_tf() for all commands marked as
ATA_QCFLAG_FAILED.
The taskfile is simply the latest status/error as seen from the device's
perspective. The taskfile will have ATA_ERR set in the status field and
ATA_ABORTED set in the error field.
When we fill the current taskfile values for all outstanding commands,
that means that qc->result_tf will have ATA_ERR set for all commands
owned by libata EH.
When ata_eh_link_autopsy() later analyzes all commands owned by libata EH,
it will call ata_eh_analyze_tf(), which will check if qc->result_tf has
ATA_ERR set, if it does, it will set qc->err_mask (which marks the command
as an error).
When ata_eh_finish() later calls __ata_qc_complete() on all commands owned
by libata EH, it will call qc->complete_fn() (ata_scsi_qc_complete()),
ata_scsi_qc_complete() will call ata_gen_ata_sense() to generate sense
data if qc->err_mask is set.
This means that we will generate sense data for commands that should not
have any sense data set. Having sense data set for the non-failed commands
will cause SCSI to finish these commands instead of retrying them.
While this incorrect behavior has existed for a long time, this first
became a problem once we started reading the correct taskfile register in
commit 4ba09d202657 ("ata: libahci: read correct status and error field
for NCQ commands").
Before this commit, NCQ commands would read the taskfile values received
from the last non-NCQ command completion, which most likely did not have
ATA_ERR set, since the last non-NCQ command was most likely not an error.
Fix this by changing ata_eh_analyze_ncq_error() to mark all non-failed
commands as ATA_QCFLAG_RETRY, and change the loop in ata_eh_link_autopsy()
to skip commands marked as ATA_QCFLAG_RETRY.
While at it, make sure that we clear ATA_ERR and any error bits for all
commands except the actual command that caused the NCQ error, so that no
other libata code will be able to misinterpret these commands as errors.
Fixes: 4ba09d202657 ("ata: libahci: read correct status and error field for NCQ commands")
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
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Clean up the code by making use of the newly introduced
ata_port_is_frozen() helper function.
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
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Currently, the sense data reporting feature set is enabled for all ATA
devices which supports the feature set (ata_id_has_sense_reporting()),
see ata_dev_config_sense_reporting().
However, even if sense data reporting is enabled, and the device
indicates that sense data is available, the sense data is only fetched
for ATA ZAC devices. For regular ATA devices, the available sense data
is never fetched, it is simply ignored. Instead, libata will use the
ERROR + STATUS fields and map them to a very generic and reduced set
of sense data, see ata_gen_ata_sense() and ata_to_sense_error().
When sense data reporting was first implemented, regular ATA devices
did fetch the sense data from the device. However, this was restricted
to only ATA ZAC devices in commit ca156e006add ("libata: don't request
sense data on !ZAC ATA devices").
With recent changes related to sense data and NCQ autosense, we want
to, once again, fetch the sense data for all ATA devices supporting
sense reporting.
ata_gen_ata_sense() should only be used for devices that don't support
the sense data reporting feature set.
hopefully the features will be more robust this time around.
It is not just ZAC, many new ATA features, e.g. Command Duration
Limits, relies on working NCQ autosense and sense data. Therefore,
it is not really an option to avoid fetching the sense data forever.
If we encounter a device that is misbehaving because the sense data is
actually fetched, then that device should be quirked such that it
never enables the sense data reporting feature set in the first place,
since such a device is obviously not compliant with the specification.
The order in which we will try to add sense data to a scsi_cmnd:
1) NCQ autosense (if supported) - ata_eh_analyze_ncq_error()
2) REQUEST SENSE DATA EXT (if supported) - ata_eh_request_sense()
3) error + status field translation - ata_gen_ata_sense(), called
by ata_scsi_qc_complete() if neither 1) or 2) is supported.
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
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While this shouldn't be needed if all devices that claim that they
support NCQ autosense (ata_id_has_ncq_autosense()) and/or the sense
data reporting feature (ata_id_has_sense_reporting()), actually
supported those features.
However, there might be some old ATA devices that either have these
bits set, even when they don't support those features, or they simply
return malformed data when using those features.
These devices should be quirked, but in order to try to minimize the
impact for the users of these such devices, it was suggested by Damien
Le Moal that it might be a good idea to sanity check the sense data
received from the device. If the sense data looks bogus, then the
sense data is never added to the scsi_cmnd command.
Introduce a new function, ata_scsi_sense_is_valid(), and use it in all
places where sense data is received from the device.
Suggested-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
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Currently, the logic if we should call ata_scsi_set_sense()
(and set flag ATA_QCFLAG_SENSE_VALID to indicate that we have
successfully added sense data to the struct ata_queued_cmd)
looks like this:
if (dev->class == ATA_DEV_ZAC &&
((qc->result_tf.status & ATA_SENSE) || qc->result_tf.auxiliary))
The problem with this is that a drive can support the NCQ command
error log without supporting NCQ autosense.
On such a drive, if the failing command has sense data, the status
field in the NCQ command error log will have the ATA_SENSE bit set.
It is just that this sense data is not included in the NCQ command
error log when NCQ autosense is not supported. Instead the sense
data has to be fetched using the REQUEST SENSE DATA EXT command.
Therefore, we should only add the sense data if the drive supports
NCQ autosense AND the ATA_SENSE bit is set in the status field.
Fix this, and at the same time, remove the duplicated ATA_DEV_ZAC
check. The struct ata_taskfile supplied to ata_eh_read_log_10h()
is memset:ed before calling the function, so simply checking if
qc->result_tf.auxiliary is set is sufficient to tell us that the
log actually contained sense data.
Fixes: d238ffd59d3c ("libata: do not attempt to retrieve sense code twice")
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata
Pull ata updates from Damien Le Moal:
- Print the timeout value for internal command failures due to a
timeout (from Tomas)
- Improve parameter names in ata_dev_set_feature() to clarify this
function use (from Niklas)
- Improve the ahci driver low power mode setting initialization to
allow more flexibility for the user (from Rafael)
- Several patches to remove redundant variables in libata-core,
libata-eh and the pata_macio driver and to fix typos in comments
(from Jinpeng, Shaomin, Ye)
- Some code simplifications and macro renaming (for clarity) in various
functions of libata-core (from me)
- Add a missing check for a potential failure of sata_scr_read() in
sata_print_link_status() (from Li)
- Cleanup of libata Kconfig PATA_PLATFORM and PATA_OF_PLATFORM options
(from Lukas)
- Cleanups of ata dt-bindings and improvements of libahci_platform,
ahci and libahci code (from Serge)
- New driver for Synopsys AHCI SATA controllers, based of the generic
ahci code (from Serge). One compilation warning fix is added for this
driver (from me)
- Several fixes to macros used to discover a drive capabilities to be
consistent with the ACS specifications (from Niklas)
- A couple of simplifcations to some libata functions, removing
unnecessary arguments (from Niklas)
- An improvements to libata-eh code to avoid unnecessary link reset
when revalidating a drive after a failed command. In practice, this
extra, unneeded reset, reset does not cause any arm beyond slightly
slowing down error recovery (from Niklas)
* tag 'ata-6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata: (45 commits)
ata: libata-eh: avoid needless hard reset when revalidating link
ata: libata: drop superfluous ata_eh_analyze_tf() parameter
ata: libata: drop superfluous ata_eh_request_sense() parameter
ata: fix ata_id_has_dipm()
ata: fix ata_id_has_ncq_autosense()
ata: fix ata_id_has_devslp()
ata: fix ata_id_sense_reporting_enabled() and ata_id_has_sense_reporting()
ata: libata-eh: Remove the unneeded result variable
ata: ahci_st: Enable compile test
ata: ahci_st: Fix compilation warning
MAINTAINERS: Add maintainers for DWC AHCI SATA driver
ata: ahci-dwc: Add Baikal-T1 AHCI SATA interface support
ata: ahci-dwc: Add platform-specific quirks support
dt-bindings: ata: ahci: Add Baikal-T1 AHCI SATA controller DT schema
ata: ahci: Add DWC AHCI SATA controller support
ata: libahci_platform: Add function returning a clock-handle by id
dt-bindings: ata: ahci: Add DWC AHCI SATA controller DT schema
ata: ahci: Introduce firmware-specific caps initialization
ata: ahci: Convert __ahci_port_base to accepting hpriv as arguments
ata: libahci: Don't read AHCI version twice in the save-config method
...
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The function __ata_change_queue_depth() uses the helper
ata_scsi_find_dev() to get the ata_device structure of a scsi device and
set that device maximum queue depth. However, when the ata device is
managed by libsas, ata_scsi_find_dev() returns NULL, turning
__ata_change_queue_depth() into a nop, which prevents the user from
setting the maximum queue depth of ATA devices used with libsas based
HBAs.
Fix this by renaming __ata_change_queue_depth() to
ata_change_queue_depth() and adding a pointer to the ata_device
structure of the target device as argument. This pointer is provided by
ata_scsi_change_queue_depth() using ata_scsi_find_dev() in the case of
a libata managed device and by sas_change_queue_depth() using
sas_to_ata_dev() in the case of a libsas managed ata device.
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Tested-by: John Garry <john.garry@huawei.com>
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Rename ATA_DFLAG_NCQ_PRIO_ENABLE to ATA_DFLAG_NCQ_PRIO_ENABLED to match
the fact that this flags indicates if NCQ priority use is enabled by the
user.
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
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Improve ATA queued command allocation as follows:
- For attaining a qc tag for a SAS host we need to allocate a bit in
ata_port.sas_tag_allocated bitmap.
However we already have a unique tag per device in range
[0, ATA_MAX_QUEUE -1] in the scsi cmnd budget token, so just use that
instead.
- It is a bit pointless to have ata_qc_new_init() in libata-core.c since it
pokes scsi internals, so inline it in ata_scsi_qc_new() (in
libata-scsi.c). Also update Doc accordingly.
- Use standard SCSI helpers set_host_byte() and set_status_byte() in
ata_scsi_qc_new().
Christoph Hellwig originally contributed the change to inline
ata_qc_new_init().
Signed-off-by: John Garry <john.garry@huawei.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
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Add the explicit error and status register fields to 'struct ata_taskfile'
using the anonymous *union*s ('struct ide_taskfile' had that for ages!) and
update the libata taskfile code accordingly. There should be no object code
changes resulting from that...
Signed-off-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
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Rename the link flag ATA_LFLAG_NO_DB_DELAY to
ATA_LFLAG_NO_DEBOUNCE_DELAY. The new name is longer, but clearer.
Signed-off-by: Paul Menzel <pmenzel@molgen.mpg.de>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
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Most of the information is already covered by tracepoints
(if not downright pointless), so remove the VPRINTK() calls.
And while we're at it, remove ata_scsi_dump_cdb(), too,
as this information can be retrieved from scsi tracing.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
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Add tracepoints for ATA error handling.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
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Use sysfs_emit() instead of snprintf() in sysfs attibute show()
functions.
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
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coccinelle report：
./drivers/ata/libata-sata.c:830:8-16:
WARNING: use scnprintf or sprintf
Use sysfs_emit instead of scnprintf or sprintf makes more sense.
Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Yang Guang <yang.guang5@zte.com.cn>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
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Since ata_ncq_sdev_attrs is a local struct, declare it static. This
avoids a sparse warning at compile time.
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
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struct device supports attribute groups directly but does not support
struct device_attribute directly. Hence switch to attribute groups.
Link: https://lore.kernel.org/r/20211012233558.4066756-3-bvanassche@acm.org
Acked-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Conditional statements are faster than indirect calls. Hence call
scsi_done() directly.
Link: https://lore.kernel.org/r/20211007202923.2174984-4-bvanassche@acm.org
Acked-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Currently, the only way a user can determine if a SATA device supports
NCQ priority is to try to enable the use of this feature using the
ncq_prio_enable sysfs device attribute. If enabling the feature fails,
it is because the device does not support NCQ priority. Otherwise, the
feature is enabled and success indicates that the device supports NCQ
priority.
Improve this odd interface by introducing the read-only
ncq_prio_supported sysfs device attribute to indicate if a SATA device
supports NCQ priority. The value of this attribute reflects the status
of device flag ATA_DFLAG_NCQ_PRIO, which is set only for devices
supporting NCQ priority.
Add this new sysfs attribute to the device attributes group of libahci
and libata-sata.
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Link: https://lore.kernel.org/r/20210816014456.2191776-10-damien.lemoal@wdc.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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The ata device flag ATA_DFLAG_NCQ_PRIO indicates if a device supports
the NCQ Priority feature while the ATA_DFLAG_NCQ_PRIO_ENABLE device
flag indicates if the feature is enabled. Enabling NCQ priority use is
controlled by the user through the device sysfs attribute
ncq_prio_enable. As a result, the ATA_DFLAG_NCQ_PRIO flag should not be
cleared when ATA_DFLAG_NCQ_PRIO_ENABLE is not set as the device still
supports the feature even after the user disables it. This leads to the
following cleanups:
- In ata_build_rw_tf(), set a command high priority bit based on the
ATA_DFLAG_NCQ_PRIO_ENABLE flag, not on the ATA_DFLAG_NCQ flag. That
is, set a command high priority only if the user enabled NCQ priority
use.
- In ata_dev_config_ncq_prio(), ATA_DFLAG_NCQ_PRIO should not be cleared
if ATA_DFLAG_NCQ_PRIO_ENABLE is not set. If the device does not
support NCQ priority, both ATA_DFLAG_NCQ_PRIO and
ATA_DFLAG_NCQ_PRIO_ENABLE must be cleared.
With the above ata_dev_config_ncq_prio() change, ATA_DFLAG_NCQ_PRIO flag
is set on device scan and revalidation. There is no need to trigger a
device revalidation in ata_ncq_prio_enable_store() when the user enables
the use of NCQ priority. Remove the revalidation code from that funciton
to simplify it. Also change the return value from -EIO to -EINVAL when a
user tries to enable NCQ priority for a device that does not support
this feature. While at it, also simplify ata_ncq_prio_enable_show().
Overall, there is no functional change introduced by this patch.
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Link: https://lore.kernel.org/r/20210816014456.2191776-7-damien.lemoal@wdc.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Fixes the following W=1 kernel build warning(s):
drivers/ata/libata-sata.c:1085: warning: expecting prototype for port_alloc(). Prototype was for ata_sas_port_alloc() instead
drivers/ata/libata-sata.c:1140: warning: expecting prototype for ata_port_stop(). Prototype was for ata_sas_port_stop() instead
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Tejun Heo <htejun@gmail.com>
Cc: linux-ide@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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* move ata_eh_analyze_ncq_error() and ata_eh_read_log_10h() to
libata-sata.c
* add static inline for ata_eh_analyze_ncq_error() for
CONFIG_SATA_HOST=n case (link->sactive is non-zero only if
NCQ commands are actually queued so empty function body is
sufficient)
Code size savings on m68k arch using (modified) atari_defconfig:
text data bss dec hex filename
before:
16164 18 0 16182 3f36 drivers/ata/libata-eh.o
after:
15446 18 0 15464 3c68 drivers/ata/libata-eh.o
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Start separating SATA specific code from libata-eh.c:
* move sata_async_notification() to libata-sata.c:
Code size savings on m68k arch using (modified) atari_defconfig:
text data bss dec hex filename
before:
16243 18 0 16261 3f85 drivers/ata/libata-eh.o
after:
16164 18 0 16182 3f36 drivers/ata/libata-eh.o
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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* un-inline:
- ata_scsi_dump_cdb()
- __ata_scsi_queuecmd()
* un-static:
- ata_scsi_sdev_config()
- ata_scsi_dev_config()
- ata_scsi_dump_cdb()
- __ata_scsi_queuecmd()
* move ata_sas_*() to libata-sata.c:
* add static inlines for CONFIG_SATA_HOST=n case for
ata_sas_{allocate,free}_tag()
Code size savings on m68k arch using (modified) atari_defconfig:
text data bss dec hex filename
before:
19137 23 576 19736 4d18 drivers/ata/libata-scsi.o
after:
18330 23 576 18929 49f1 drivers/ata/libata-scsi.o
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Start separating SATA specific code from libata-scsi.c:
* un-static ata_scsi_find_dev()
* move following code to libata-sata.c:
- SATA only sysfs device attributes handling
- __ata_change_queue_depth()
- ata_scsi_change_queue_depth()
* cover with CONFIG_SATA_HOST ifdef SATA only sysfs device
attributes handling code and ATA_SHT_NCQ() macro in
<linux/libata.h>
Code size savings on m68k arch using (modified) atari_defconfig:
text data bss dec hex filename
before:
20702 105 576 21383 5387 drivers/ata/libata-scsi.o
after:
19137 23 576 19736 4d18 drivers/ata/libata-scsi.o
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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* move sata_deb_timing_*() to libata-sata.c
* add static inline for sata_ehc_deb_timing() for
CONFIG_SATA_HOST=n case
Code size savings on m68k arch using (modified) atari_defconfig:
text data bss dec hex filename
before:
32158 572 40 32770 8002 drivers/ata/libata-core.o
after:
32015 572 40 32627 7f73 drivers/ata/libata-core.o
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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