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If a .queue_rq() function returns BLK_MQ_RQ_QUEUE_BUSY then the block
driver that implements that function is responsible for rerunning the
hardware queue once requests can be queued again successfully.
commit 52d7f1b5c2f3 ("blk-mq: Avoid that requeueing starts stopped
queues") removed the blk_mq_stop_hw_queue() call from scsi_queue_rq()
for the BLK_MQ_RQ_QUEUE_BUSY case. Hence change all calls to functions
that are intended to rerun a busy queue such that these examine all
hardware queues instead of only stopped queues.
Since no other functions than scsi_internal_device_block() and
scsi_internal_device_unblock() should ever stop or restart a SCSI
queue, change the blk_mq_delay_queue() call into a
blk_mq_delay_run_hw_queue() call.
Fixes: commit 52d7f1b5c2f3 ("blk-mq: Avoid that requeueing starts stopped queues")
Fixes: commit 7e79dadce222 ("blk-mq: stop hardware queue in blk_mq_delay_queue()")
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Hannes Reinecke <hare@suse.de>
Cc: Sagi Grimberg <sagi@grimberg.me>
Cc: Long Li <longli@microsoft.com>
Cc: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
The redundant init_completion() here seems to be a cut&past error as
struct scsi_qla_host only has 4 completion elements to initialize, thus
the duplicate init_completion(disable_acb_comp) is simply removed.
Signed-off-by: Nicholas Mc Guire <der.herr@hofr.at>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
There hasn't been any reports for HBAs where asynchronous abort
would not work, so we should make it mandatory and remove
the fallback.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
scsi_eh_scmd_add() currently only will fail if no
error handler thread is started (which will never be the
case) or if the state machine encounters an illegal transition.
But if we're encountering an invalid state transition
chances is we cannot fixup things with the error handler.
So better add a WARN_ON for illegal host states and
make scsi_dh_scmd_add() a void function.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
If a failed command is retried and fails again we need
to enter SCSI EH, otherwise we will never be able to
recover the command.
To detect this situation we must not clear scmd->eh_eflags
when EH finishes but rather make it persistent throughout
the lifetime of the command.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Benjamin Block <bblock@linux.vnet.ibm.com>
Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
We now first try to call ->eh_abort_handler from a work queue, but libsas
was always failing that for no good reason. Allow async aborts.
Reviewed-by: Johannes Thumshirn <jth@kernel.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
When a command has timed out we always should be sending an
abort; with the previous code a failed abort might signal
SCSI EH to start, and all other timed out commands will
never be aborted, even though they might belong to a
different ITL nexus.
Cc: Benjamin Block <bblock@linux.vnet.ibm.com>
Signed-off-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
If sd_eh_action() decides to take the device offline there is
no point in returning FAILED, as taking the device offline
is the ultimate step in SCSI EH anyway.
So further escalation via SCSI EH is not likely to make a
difference and we can as well return SUCCESS.
Cc: Benjamin Block <bblock@linux.vnet.ibm.com>
Signed-off-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The current medium access timeout counter will be increased for
each command, so if there are enough failed commands we'll hit
the medium access timeout for even a single device failure and
the following kernel message is displayed:
sd H:C:T:L: [sdXY] Medium access timeout failure. Offlining disk!
Fix this by making the timeout per EH run, ie the counter will
only be increased once per device and EH run.
Fixes: 18a4d0a ("[SCSI] Handle disk devices which can not process medium access commands")
Cc: Ewan Milne <emilne@redhat.com>
Cc: Lawrence Obermann <loberman@redhat.com>
Cc: Benjamin Block <bblock@linux.vnet.ibm.com>
Cc: Steffen Maier <maier@linux.vnet.ibm.com>
Signed-off-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
And get automatic MSI-X affinity for free.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Varun Prakash <varun@chelsio.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The commit 08024885a2a3 ("ses: Add power_status to SES device slot")
introduced the 'power_status' attribute to enclosure components and
the associated callbacks.
There are 2 callbacks available to get the power status of a device:
1) ses_get_power_status() for 'struct enclosure_component_callbacks'
2) get_component_power_status() for the sysfs device attribute
(these are available for kernel-space and user-space, respectively.)
However, despite both methods being available to get power status
on demand, that commit also introduced a call to get power status
in ses_enclosure_data_process().
This dramatically increased the total probe time for SCSI devices
on larger configurations, because ses_enclosure_data_process() is
called several times during the SCSI devices probe and loops over
the component devices (but that is another problem, another patch).
That results in a tremendous continuous hammering of SCSI Receive
Diagnostics commands to the enclosure-services device, which does
delay the total probe time for the SCSI devices __significantly__:
Originally, ~34 minutes on a system attached to ~170 disks:
[ 9214.490703] mpt3sas version 13.100.00.00 loaded
...
[11256.580231] scsi 17:0:177:0: qdepth(16), tagged(1), simple(0),
ordered(0), scsi_level(6), cmd_que(1)
With this patch, it decreased to ~2.5 minutes -- a 13.6x faster
[ 1002.992533] mpt3sas version 13.100.00.00 loaded
...
[ 1151.978831] scsi 11:0:177:0: qdepth(16), tagged(1), simple(0),
ordered(0), scsi_level(6), cmd_que(1)
Back to the commit discussion.. on the ses_get_power_status() call
introduced in ses_enclosure_data_process(): impact of removing it.
That may possibly be in place to initialize the power status value
on device probe. However, those 2 functions available to retrieve
that value _do_ automatically refresh/update it. So the potential
benefit would be a direct access of the 'power_status' field which
does not use the callbacks...
But the only reader of 'struct enclosure_component::power_status'
is the get_component_power_status() callback for sysfs attribute,
and it _does_ check for and call the .get_power_status callback,
(which indeed is defined and implemented by that commit), so the
power status value is, again, automatically updated.
So, the remaining potential for a direct/non-callback access to
the power_status attribute would be out-of-tree modules -- well,
for those, if they are for whatever reason interested in values
that are set during device probe and not up-to-date by the time
they need it.. well, that would be curious.
Well, to handle that more properly, set the initial power state
value to '-1' (i.e., uninitialized) instead of '1' (power 'on'),
and check for it in that callback which may do an direct access
to the field value _if_ a callback function is not defined.
Signed-off-by: Mauricio Faria de Oliveira <mauricfo@linux.vnet.ibm.com>
Fixes: 08024885a2a3 ("ses: Add power_status to SES device slot")
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Reviewed-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Mostly simple cases of overlapping changes (adding code nearby,
a function whose name changes, for example).
Signed-off-by: David S. Miller <davem@davemloft.net>
Instead of bloating the generic struct request with it.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
sas_domain_release_transport is unused since at least v3.13, remove it.
Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Milan P Gandhi <mgandhi@redhat.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
gcc-7.0.1 now warns about a previously unnoticed access of uninitialized
struct members:
drivers/scsi/advansys.c: In function 'AscMsgOutSDTR':
drivers/scsi/advansys.c:3860:26: error: '*((void *)&sdtr_buf+5)' may be used uninitialized in this function [-Werror=maybe-uninitialized]
((ushort)s_buffer[i + 1] << 8) | s_buffer[i]);
^
drivers/scsi/advansys.c:3860:26: error: '*((void *)&sdtr_buf+7)' may be used uninitialized in this function [-Werror=maybe-uninitialized]
drivers/scsi/advansys.c:3860:26: error: '*((void *)&sdtr_buf+5)' may be used uninitialized in this function [-Werror=maybe-uninitialized]
drivers/scsi/advansys.c:3860:26: error: '*((void *)&sdtr_buf+7)' may be used uninitialized in this function [-Werror=maybe-uninitialized]
The code has existed in this exact form at least since v2.6.12, and the
warning seems correct. This uses named initializers to ensure we
initialize all members of the structure.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Thirteen small fixes: The hopefully final effort to get the lpfc nvme
kconfig problems sorted, there's one important sg fix (user can induce
read after end of buffer) and one minor enhancement (adding an extra
PCI ID to qedi). The rest are a set of minor fixes, which mostly occur
as user visible in error legs or on specific devices.
Signed-off-by: James E.J. Bottomley <jejb@linux.vnet.ibm.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"Thirteen small fixes: The hopefully final effort to get the lpfc nvme
kconfig problems sorted, there's one important sg fix (user can induce
read after end of buffer) and one minor enhancement (adding an extra
PCI ID to qedi). The rest are a set of minor fixes, which mostly occur
as user visible in error legs or on specific devices"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: ufs: remove the duplicated checking for supporting clkscaling
scsi: lpfc: fix building without debugfs support
scsi: lpfc: Fix PT2PT PRLI reject
scsi: hpsa: fix volume offline state
scsi: libsas: fix ata xfer length
scsi: scsi_dh_alua: Warn if the first argument of alua_rtpg_queue() is NULL
scsi: scsi_dh_alua: Ensure that alua_activate() calls the completion function
scsi: scsi_dh_alua: Check scsi_device_get() return value
scsi: sg: check length passed to SG_NEXT_CMD_LEN
scsi: ufshcd-platform: remove the useless cast in ERR_PTR/IS_ERR
scsi: qedi: Add PCI device-ID for QL41xxx adapters.
scsi: aacraid: Fix potential null access
scsi: qla2xxx: Fix crash in qla2xxx_eh_abort on bad ptr
Constify all instances of blk_mq_ops, as they are never modified.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
And get automatic MSI-X affinity for free.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Jitendra Bhivare <jitendra.bhivare@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This reverts commit 61e073590b82a539654626ecae91b8fab11db3f3.
The patch introduced redundant query retries as we already had such
mechanism provided with _retry functions. Both ufshcd_read_desc and
ufshcd_read_unit_desc_param functions call ufshcd_query_descriptor_retry
wrapper.
Signed-off-by: Szymon Mielczarek <szymonx.mielczarek@intel.com>
Reviewed-by: Subhash Jadavani <subhashj@codeaurora.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Gerry Morong <gerry.morong@microsemi.com>
Reviewed-by: Scott Teel <scott.teel@microsemi.com>
Signed-off-by: Don Brace <don.brace@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Gerry Morong <gerry.morong@microsemi.com>
Reviewed-by: Scott Teel <scott.teel@microsemi.com>
Signed-off-by: Don Brace <don.brace@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Removing the 'select SCSI_SAS_LIBSAS' statement in Kconfig resulted in a
link failure in configurations that have hisi_sas built-in but libsas as
a loadable module:
drivers/scsi/built-in.o: In function `hisi_sas_scan_finished':
hisi_sas_main.c:(.text+0x37ce9): undefined reference to `sas_drain_work'
drivers/scsi/built-in.o: In function `hisi_sas_slave_configure':
hisi_sas_main.c:(.text+0x37d17): undefined reference to `sas_slave_configure'
hisi_sas_main.c:(.text+0x37d40): undefined reference to `sas_change_queue_depth'
drivers/scsi/built-in.o: In function `hisi_sas_remove':
All other libsas users have the 'select' statement, so we should do the
same here for consistency. For all I can tell, the patch that added the
sata softreset does not actually introduce a dependency on SCSI_SAS_ATA
but instead adds calls into libata itself, so we can express that with a
more specific dependency.
We cannot have 'select SCSI_SAS_LIBSAS; depends on SCSI_SAS_ATA' as that
would cause a dependency loop.
Fixes: 7c594f0407de ("scsi: hisi_sas: add softreset function for SATA disk")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Not much reason to use ARRAY_SIZE() when we know it's for a C string.
Signed-off-by: Tomohiro Kusumi <tkusumi@tuxera.com>
Reviewed-by: Subhash Jadavani <subhashj@codeaurora.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
These flags are no longer needed after 2fbd009b in 2013.
Signed-off-by: Tomohiro Kusumi <tkusumi@tuxera.com>
Reviewed-by: Subhash Jadavani <subhashj@codeaurora.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Add macros for register bits that can be found in JESD223C (v2.1).
Not all registers are defined in ufshci.h (i.e. some are unused whether
macros are defined or undefined), but all the bits for those registers
that are already defined should appear here.
Signed-off-by: Tomohiro Kusumi <tkusumi@tuxera.com>
Reviewed-by: Subhash Jadavani <subhashj@codeaurora.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Not having () isn't likely to do any harm in this case, but all the
other macros below do have it. Also add "are" in a comment.
Signed-off-by: Tomohiro Kusumi <tkusumi@tuxera.com>
Reviewed-by: Subhash Jadavani <subhashj@codeaurora.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
ufshcd driver generally uses bool for is_xxx type things instead of int,
so conform to its style.
Signed-off-by: Tomohiro Kusumi <tkusumi@tuxera.com>
Reviewed-by: Subhash Jadavani <subhashj@codeaurora.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
It appears that a break in the TRANS_TX_OPEN_CNX_ERR_NO_DESTINATION case
got accidentally removed in an earlier commit, as it stands, the
ts->stat and ts->open_rej_reason are being updated twice for this case
which looks incorrect. Fix this by adding in the missing break
statement.
Detected by CoverityScan, CID#1422110 ("Missing break in switch")
Fixes: 634a9585f49c7 ("scsi: hisi_sas: process error codes according to their priority")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Version 11.4.0.0
Signed-off-by: Jitendra Bhivare <jitendra.bhivare@broadcom.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Reviewed-by: Chris Leech <cleech@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Update Broadcom Copyright markings in all files.
Signed-off-by: Jitendra Bhivare <jitendra.bhivare@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Data in buffers are gathered into a single buffer before giving to iSCSI
layer. Though less likely to have payload more than 8K in ASYNC PDU, the
data length is provide by FW and check is missing for overrun.
Signed-off-by: Jitendra Bhivare <jitendra.bhivare@broadcom.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Reviewed-by: Chris Leech <cleech@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
With previous patch adding ASYNC Rx buffers to free_list is not
required. Remove all free_list related operations.
Add in_use to track if buffer posted is being processed by driver and
purge all buffers received for connection if found so.
Signed-off-by: Jitendra Bhivare <jitendra.bhivare@broadcom.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Reviewed-by: Chris Leech <cleech@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
FW runs out of buffer if buffers are not posted back soon. ASYNC Rx CQE
indicates that FW has consumed 8 RQEs. Use it to post back buffers
instead of waiting for buffers to be processed and freed by driver.
Signed-off-by: Jitendra Bhivare <jitendra.bhivare@broadcom.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Reviewed-by: Chris Leech <cleech@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Currently, ASYNC PDU default queue size is set to max connections. This
leaves only one buffer per connection for any ASYNC PDUs from targets.
Double the size of the default queue.
Signed-off-by: Jitendra Bhivare <jitendra.bhivare@broadcom.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Reviewed-by: Chris Leech <cleech@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
scsi_flush_work flushes workqueue for the Scsi_Host. In iSCSI offload
enabled host, this would wait for all other sessions under the host.
Use flush_work for the session being removed instead.
Signed-off-by: Jitendra Bhivare <jitendra.bhivare@broadcom.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Reviewed-by: Chris Leech <cleech@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
spin_unlock_bh back_lock is used in beiscsi_eh_device_reset instead of
spin_lock.
Signed-off-by: Jitendra Bhivare <jitendra.bhivare@broadcom.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Reviewed-by: Chris Leech <cleech@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
CID needs to be freed even when invalidate or upload connection fails.
Attempt to close connection 3 times before freeing CID.
Set cleanup_type to INVALIDATE instead of force TCP_RST. This
unnecessarily is terminating connection with reset instead of gracefully
closing it.
Set save_cfg to 0 - session not to be saved on flash.
Add delay and process CQ before uploading connection.
Signed-off-by: Jitendra Bhivare <jitendra.bhivare@broadcom.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Reviewed-by: Chris Leech <cleech@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
These aren't really falling through to anywhere meaningful.
Signed-off-by: Tomohiro Kusumi <tkusumi@tuxera.com>
Reviewed-by: Subhash Jadavani <subhashj@codeaurora.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
We don't call the remove() function unless probe() succeeds so "oud"
can't be NULL here. Plus, if it were NULL, we dereference it on the
next line so it would crash anyway.
[mkp: applied by hand]
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Boaz Harrosh <ooo@electrozaur.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
There are same conditions for checking whether supporting clkscaling or
not. When ufshcd is supporting clkscaling, active_reqs should be
decreased by one.
[mkp: addressed comment from Bartlomiej]
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Reviewed-by: Subhash Jadavani <subhashj@codeaurora.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
My email address may be found in the git commit logs and in MAINTAINERS.
Remove duplicate addresses so they won't have to be kept up-to-date.
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
