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16436 commits

Author SHA1 Message Date
Colin Ian King
23b389c231 scsi: mpt3sas: fix spelling mistake: "disbale" -> "disable"
Trivial fix to spelling mistake in module parameter description text

[mkp: applied by hand]

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-05-01 23:35:51 -04:00
Colin Ian King
55d9a1d241 scsi: megaraid_sas: fix spelling mistake: "disbale" -> "disable"
Trivial fix to spelling mistake in module parameter description text

[mkp: applied by hand]

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-05-01 23:35:43 -04:00
Colin Ian King
1895bd7bce scsi: esas2r: fix spelling mistake: "asynchromous" -> "asynchronous"
Trivial fix to spelling mistake in module description text

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-05-01 23:32:31 -04:00
Colin Ian King
35dc0b07b3 scsi: isci: remove redundant check on in_connection_align_insertion_frequency
The sanity check on u->in_connection_align_insertion_frequency is being
performed twice and hence the first check can be removed since it is
redundant. Cleans up cppcheck warning:

drivers/scsi/ibmvscsi/ibmvscsi.c:1711: (warning) Identical inner 'if'
condition is always true.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-05-01 23:31:45 -04:00
YueHaibing
9407253f4a scsi: a100u2w: Use module_pci_driver
Remove boilerplate code by using macro module_pci_driver.

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-05-01 23:31:40 -04:00
YueHaibing
3e1bbc5685 scsi: wd719x: Use module_pci_driver
Remove boilerplate code by using macro module_pci_driver.

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-05-01 23:30:12 -04:00
YueHaibing
5f1c721196 scsi: am53c974: Use module_pci_driver
Remove boilerplate code by using macro module_pci_driver.

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-05-01 23:29:41 -04:00
Christoph Hellwig
63aed100e2 scsi: scsi_transport_sas: don't bounce highmem pages for the smp handler
All three instance of ->smp_handler deal with highmem backed requests
just fine.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-05-01 23:11:15 -04:00
Arnd Bergmann
f990bee3f1 scsi: ips: fix firmware timestamps for 32-bit
do_gettimeofday() is deprecated since it will stop working in 2038 on
32-bit platforms, leading to incorrect times passed to the firmware.
On 64-bit platforms the current code appears to be fine, as the
calculation passes an 8-bit century number into the firmware that can
represent times long in the future (possibly until 25599).

Using ktime_get_real_seconds() to get a 64-bit seconds value and
time64_to_tm() to convert it into the firmware format greatly simplifies
the ips timekeeping code, makes 32-bit and 64-bit behave the same way
here, and gets us closer to removing the deprecated interfaces.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-04-20 19:40:17 -04:00
Arnd Bergmann
feeeca4ce2 scsi: esas2r: use ktime_get_real_seconds()
do_gettimeofday() is deprecated because of the y2038 overflow.  Here, we
use the result to pass into a 32-bit field in the firmware, which still
risks an overflow, but if the firmware is written to expect unsigned
values, it can at least last until y2106, and there is not much we can
do about it.

This changes do_gettimeofday() to ktime_get_real_seconds(), which at
least simplifies the code a bit, and avoids the deprecated
interface. I'm adding a comment about the overflow to document what
happens.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-04-20 19:40:16 -04:00
YueHaibing
f9c25ccfc1 scsi: mvumi: Using module_pci_driver
Remove boilerplate code by using macro module_pci_driver.

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-04-20 19:40:11 -04:00
Jia-Ju Bai
4011f07660 scsi: st: Replace GFP_ATOMIC with GFP_KERNEL in new_tape_buffer
new_tape_buffer() is never called in atomic context. new_tape_buffer()
is only called by st_probe(), which is only set as ".probe" in struct
scsi_driver.

Despite never getting called from atomic context, new_tape_buffer()
calls kzalloc() with GFP_ATOMIC, which does not sleep for allocation.
GFP_ATOMIC is not necessary and can be replaced with GFP_KERNEL, which
can sleep and improve the possibility of sucessful allocation.

This is found by a static analysis tool named DCNS written by myself.
And I also manually check it.

Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-04-20 19:14:37 -04:00
Jia-Ju Bai
1f618aac2f scsi: st: Replace GFP_ATOMIC with GFP_KERNEL in st_probe
st_probe() is never called in atomic context. st_probe() is only set as
".probe" in struct scsi_driver.

Despite never getting called from atomic context, st_probe() calls
kzalloc() with GFP_ATOMIC, which does not sleep for allocation.
GFP_ATOMIC is not necessary and can be replaced with GFP_KERNEL, which
can sleep and improve the possibility of sucessful allocation.

This is found by a static analysis tool named DCNS written by myself.
And I also manually check it.

Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-04-20 19:14:37 -04:00
Martin Wilck
c360652006 scsi: devinfo: BLIST_RETRY_ASC_C1 for Fujitsu ETERNUS
On Fujitsu ETERNUS systems, sense code ABORTED COMMAND with ASC/Q C1/01
is used to indicate temporary condition where the storage-internal path
to a target is switched from one controller to another. SCSI commands
that return with this error code must be retried unconditionally
(i.e. without the "maybe_retry" logic in scsi_decide_disposition);
otherwise dm-multipath might initiate a failover from a healthy path
e.g. for REQ_FAILFAST_DEV commands.

Introduce a new blist flag for this case.

[mkp: applied by hand]

Signed-off-by: Martin Wilck <mwilck@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-04-20 19:14:36 -04:00
Martin Wilck
29cfc2ab71 scsi: devinfo: add BLIST_RETRY_ITF for EMC Symmetrix
EMC Symmetrix returns 'internal target error' for a variety of
conditions, most of which will be transient.  So we should always retry
it, even with failfast set.  Otherwise we'd get spurious path flaps with
multipath.

Signed-off-by: Martin Wilck <mwilck@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-04-20 19:14:36 -04:00
Martin Wilck
358fda5ff4 scsi: devinfo: warn on undefined blist flags
Warn if a device (or the user) sets blist flags which are unknown
or have been removed. This should enable us to reuse freed blist
bits in later releases.

Signed-off-by: Martin Wilck <mwilck@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-04-20 19:14:35 -04:00
Martin Wilck
1409880357 scsi: devinfo: change blist_flag_t to 64bit
Space for SCSI blist flags is gradually running out. Change the type to
__u64 and fix a checkpatch complaint about symbolic mode flags in
scsi_devinfo.c.

Make checkpatch happy by replacing simple_strtoul() with kstrtoull().

Signed-off-by: Martin Wilck <mwilck@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-04-20 19:14:35 -04:00
Martin Wilck
659c1c1b29 scsi: devinfo: use const_ilog2 for array indices
Use the just introduced const_ilog2() macro to avoid sparse errors.

Signed-off-by: Martin Wilck <mwilck@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-04-20 19:14:28 -04:00
Long Li
2217a47de4 scsi: storvsc: Select channel based on available percentage of ring buffer to write
This is a best effort for estimating on how busy the ring buffer is for
that channel, based on available buffer to write in percentage. It is
still possible that at the time of actual ring buffer write, the space
may not be available due to other processes may be writing at the time.

Selecting a channel based on how full it is can reduce the possibility
that a ring buffer write will fail, and avoid the situation a channel is
over busy.

Now it's possible that storvsc can use a smaller ring buffer size
(e.g. 40k bytes) to take advantage of cache locality.

Signed-off-by: Long Li <longli@microsoft.com>
Reviewed-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-04-20 15:38:38 -04:00
Bart Van Assche
c976562162 scsi: sd_zbc: Let the SCSI core handle ILLEGAL REQUEST / ASC 0x21
scsi_io_completion() translates the sense key ILLEGAL REQUEST / ASC 0x21 into
ACTION_FAIL. That means that setting cmd->allowed to zero in sd_zbc_complete()
for this sense code / ASC combination is not necessary. Hence remove the code
that resets cmd->allowed from sd_zbc_complete().

Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Cc: Damien Le Moal <damien.lemoal@wdc.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Hannes Reinecke <hare@suse.com>
Reviewed-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-04-19 00:00:44 -04:00
Bart Van Assche
354f113205 scsi: sd_zbc: Change the type of the ZBC fields into u32
This patch does not change any functionality but makes it clear that it is on
purpose that these fields are 32 bits wide.

Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Cc: Damien Le Moal <damien.lemoal@wdc.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Hannes Reinecke <hare@suse.com>
Reviewed-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-04-19 00:00:44 -04:00
Christoph Hellwig
9027b15d51 scsi: storsvc: don't set a bounce limit
The default already is to never bounce, so the call is a no-op.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-04-19 00:00:44 -04:00
Christoph Hellwig
3e58c5cf16 scsi: iscsi_tcp: don't set a bounce limit
The default already is to never bounce, so the call is a no-op.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-04-19 00:00:44 -04:00
Souptick Joarder
0cac8e1bba scsi: sg: Change return type to vm_fault_t
Use new return type vm_fault_t for fault handler in struct
vm_operations_struct.

Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com>
Reviewed-by: Matthew Wilcox <mawilcox@microsoft.com>
Acked-by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-04-19 00:00:44 -04:00
Michael Schmitz
3109e5ae03 scsi: zorro_esp: New driver for Amiga Zorro NCR53C9x boards
New combined SCSI driver for all ESP based Zorro SCSI boards for m68k Amiga.

Code largely based on board specific parts of the old drivers (blz1230.c,
blz2060.c, cyberstorm.c, cyberstormII.c, fastlane.c which were removed after
the 2.6 kernel series for lack of maintenance) with contributions by Tuomas
Vainikka (TCQ bug tests and workaround) and Finn Thain (TCQ bugfix by use of
PIO in extended message in transfer).

New Kconfig option and Makefile entries for new Amiga Zorro ESP SCSI driver
included in this patch.

Use DMA transfers wherever possible, with board-specific DMA set-up functions
copied from the old driver code. Three byte reselection messages do appear to
cause DMA timeouts. So wire up a PIO transfer routine for these
instead. esp_reselect_with_tag explicitly sets
esp->cmd_block_dma as target address for the message bytes but PIO
requires a virtual address.  Substiute kernel virtual address
esp->cmd_block in PIO transfer call if DMA address is esp->cmd_block_dma
and phase is message in.

PIO code taken from mac_esp.c where the reselection timeout issue was debugged
and fixed first, with minor macro and function rename.

Signed-off-by: Michael Schmitz <schmitzmic@gmail.com>
Reviewed-by: Finn Thain <fthain@telegraphics.com.au>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Tested-by: Christian T. Steigies <cts@debian.org>
Tested-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-04-19 00:00:44 -04:00
Xose Vazquez Perez
37b37d2609 scsi: scsi_dh: replace too broad "TP9" string with the exact models
SGI/TP9100 is not an RDAC array:
    ^^^
https://git.opensvc.com/gitweb.cgi?p=multipath-tools/.git;a=blob;f=libmultipath/hwtable.c;h=88b4700beb1d8940008020fbe4c3cd97d62f4a56;hb=HEAD#l235

This partially reverts commit 35204772ea ("[SCSI] scsi_dh_rdac :
Consolidate rdac strings together")

[mkp: fixed up the new entries to align with rest of struct]

Cc: NetApp RDAC team <ng-eseries-upstream-maintainers@netapp.com>
Cc: Hannes Reinecke <hare@suse.de>
Cc: James E.J. Bottomley <jejb@linux.vnet.ibm.com>
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Cc: SCSI ML <linux-scsi@vger.kernel.org>
Cc: DM ML <dm-devel@redhat.com>
Signed-off-by: Xose Vazquez Perez <xose.vazquez@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-04-18 19:34:08 -04:00
Xose Vazquez Perez
b15578ddab scsi: devinfo: delete duplicate "Generic"/"USB Storage-SMC" device
The revision field is currently unused by the devinfo pattern matching
code. Combine two blacklist entries into one.

$ egrep "Generic.*Storage-SMC" /proc/scsi/device_info
'Generic' 'USB Storage-SMC' 0x402
'Generic' 'USB Storage-SMC' 0x402

[mkp: tweaked commit desc]

Cc: Hannes Reinecke <hare@suse.de>
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Cc: James E.J. Bottomley <jejb@linux.vnet.ibm.com>
Cc: SCSI ML <linux-scsi@vger.kernel.org>
Signed-off-by: Xose Vazquez Perez <xose.vazquez@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-04-18 19:34:08 -04:00
James Smart
40e4a2e15c scsi: lpfc: update driver version to 12.0.0.2
Update the driver version to 12.0.0.2

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-04-18 19:34:07 -04:00
James Smart
b0a00d8d2b scsi: lpfc: Correct missing remoteport registration during link bounces
Remote port disappearance/reappearances would cause a series of RSCN
events to be delivered to the driver. During the resulting GID_FT
handling, the driver clears the fc4 settings on the remote port, which
makes it skip registration. As such, the nvme associations eventually
fail and return io errors to the applications.

Correct by not clearng the nlp_fc4_types for all nodes in
lpfc_issue_gidft.  Instead, when the GID_FT response is handled, clear
the nlp_fc4_types of FCP and NVME prior to evaluating the fc4_type
returned by the GID_FT response.  This approach leaves "skipped" nodes
with their nlp_fc4_types intacted.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-04-18 19:34:06 -04:00
James Smart
66a85155d4 scsi: lpfc: Fix NULL pointer reference when resetting adapter
Points referencing local port structures didn't accommodate cases where
the localport may not be registered yet.

Add NULL pointer checks to logic.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-04-18 19:34:06 -04:00
James Smart
b15bd3e621 scsi: lpfc: Fix nvme remoteport registration race conditions
On tests adding and removing a remote port, calls to nvme_info would
eventually show fewer target ports discovered than were present in the
san. Additionally, the following error messages were seen:

  6031 RemotePort Registration failed err: -116, DID x471301

There is a race condition that exists between the driver and the nvme
transport on remote port unregister vs the confirmed deletion. It's
possible that the driver may rediscover the remote port and reregister
the remote port before a prior unregister delete callback was made (as
it rebinded to the prior remoteport structure). However, the driver was
coded to expect the callback before seeing the remote port again thus a
new registration. The logic results in the driver having an invalid
remoteport pointer set.

Correct by tracking when waiting for the delete callback. In cases where
the ndlp remoteport pointer is updated, it is only cleared when the wait
has not been superceded by a prior registration.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-04-18 19:34:05 -04:00
James Smart
b04744ce52 scsi: lpfc: Fix driver not recovering NVME rports during target link faults
During target-side port faults, the driver would not recover all target
port logins. This resulted in a loss of nvme device discovery.

The driver is coded to wait for all GID_FT requests to complete before
restarting discovery. A fault is seen where the outstanding GIT_FT
counts are not properly decremented, thus discovery would never
start. Another fault was found in the clearing of the gidft_inp counter
that would be skipped in this condition. And a third fault found with
lpfc_nvme_register_port that would remove a reverence on the ndlp which
then allows a node swap on a port address change to prematurely remove
the reference and release the ndlp.

The following changes are made:

 - Correct the decrementing of the outstanding GID_FT counters.

 - In RSCN handling, no longer zero the counter before calling to issue
   another GID_FT.

 - No longer remove the reference on the dlp when the ndlp->nrport value
   is not yet null.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-04-18 19:34:05 -04:00
James Smart
bf316c7851 scsi: lpfc: Fix WQ/CQ creation for older asic's.
The patch to enlarge WQ/CQ creation keys off of an adapter response that
indicates support for the larger values. Older adapters return an
incorrect response and are limited in size.  Thus the adapters fail the
WQ creation steps.

Augment the WQ sizing checks with a check on the older adapter types and
limit them to the restricted sizes.

Fixes: c176ffa084 ("scsi: lpfc: Increase CQ and WQ sizes for SCSI")
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-04-18 19:34:04 -04:00
James Smart
01466024d2 scsi: lpfc: Fix NULL pointer access in lpfc_nvme_info_show
After making remoteport unregister requests, the ndlp nrport pointer was
stale.

Track when waiting for waiting for unregister completion callback and
adjust nldp pointer assignment.  Add a few safety checks for NULL
pointer values.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-04-18 19:34:04 -04:00
James Smart
0cdb84ec26 scsi: lpfc: Fix lingering lpfc_wq resource after driver unload
After driver unloads, lpfc_wq remains active. The destroy_workqueue
calls were not being made in driver unload.  Additionally, SLI3 is
allocating lpfc_wq resources, but never uses it.

Make the destroy_workqueue calls on driver unload.  Modify the SLI3 code
path no longer allocate lpfc_wq resources.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-04-18 19:34:03 -04:00
James Smart
59c68eaad7 scsi: lpfc: Fix Abort request WQ selection
When running loads that generated aborts, io errors where seen.  Turns
out the abort requests where not placed on the proper WQ resulting in
the errors. Closer inspection inspection of this error also showed
improper spinlock api use.

Correct the WQ selection policy for the abort requests.  Correct
spin_lock/spin_lock_irq/spin_lock_irqsave usage.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-04-18 19:34:02 -04:00
James Smart
2448e48425 scsi: lpfc: Enlarge nvmet asynchronous receive buffer counts
Under large io load, the current sizing of asynchronous buffer counts
could be exceeded, indicated by a 2885 log message:

  2885 Port Status Event: port status reg 0x81800000, port smphr
      reg 0xc000, error 1=0x52004a01, error 2=0x0

Enlarge the async receive queue size.  Allow for a configurable number
of buffers to be posted to each RQ, using the new attribute
lpfc_nvmet_mrq_post.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-04-18 19:34:02 -04:00
James Smart
66a210ffb8 scsi: lpfc: Add per io channel NVME IO statistics
When debugging various issues, per IO channel IO statistics were useful
to understand what was happening. However, many of the stats were on a
port basis rather than an io channel basis.

Move statistics to an io channel basis.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-04-18 19:34:01 -04:00
James Smart
f91bc594ba scsi: lpfc: Correct target queue depth application changes
The max_scsicmpl_time parameter can be used to perform scsi cmd queue
depth mgmt based on io completion time: the queue depth is reduced to
make completion time shorter. However, as soon as an io completes and
the completion time is within limits, the code immediately bumps the
queue depth limit back up to the target queue depth. Thus the procedure
restarts, effectively limiting the usefulness of adjusting queue depth
to help completion time.

This patch makes the following changes:

 - Removes the code at io completion that resets the queue depth as soon
   as within limits.

 - As the code removed was where the target queue depth was first
   applied, change target queue depth application so that it occurs when
   the parameter is changed.

 - Makes target queue depth a standard parameter: both a module
   parameter and a sysfs parameter.

 - Optimizes the command pending count by using atomics rather than
   locks.

 - Updates the debugfs nodelist stats to allow better debugging of
   pending command counts.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-04-18 19:34:01 -04:00
James Smart
118c0415ee scsi: lpfc: Fix multiple PRLI completion error path
Nodelist entry for SCSI array ends up in UNMAPPED state. This is due to
illegal discovery State machine transition because of two PRLIs and the
first one failing with LS_RJT. Also, the error path was designed
assuming the PRLIs complete in the order they were sent, FCP first, then
NVME. In a failing case, the array thinks about the first PRLI (FCP),
but issues LS_RJT for the 2nd PRLI immediately.

Fix PRLI completion error path for the ordering expectation.  Ensure the
discovery state machine update is not set until all outstanding PRLIs
are complete.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-04-18 19:34:00 -04:00
Shivasharan S
67c5490ace scsi: megaraid_sas: driver version upgrade
Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-04-18 19:33:59 -04:00
Shivasharan S
3239b8cd28 scsi: megaraid_sas: Increase timeout by 1 sec for non-RAID fastpath IOs
Hardware could time out Fastpath IOs one second earlier than the timeout
provided by the host.

For non-RAID devices, driver provides timeout value based on OS provided
timeout value. Under certain scenarios, if the OS provides a timeout
value of 1 second, due to above behavior hardware will timeout
immediately.

Increase timeout value for non-RAID fastpath IOs by 1 second.

Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-04-18 19:33:59 -04:00
Himanshu Jha
3c6c122cfc scsi: megaraid_sas: Use zeroing memory allocator than allocator/memset
Use pci_zalloc_consistent for allocating zeroed memory and remove
unnecessary memset function.

Done using Coccinelle.
Generated by: scripts/coccinelle/api/alloc/kzalloc-simple.cocci

Suggested-by: Luis R. Rodriguez <mcgrof@kernel.org>
Signed-off-by: Himanshu Jha <himanshujha199640@gmail.com>
Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-04-18 19:33:58 -04:00
Jason Yan
b6240a4df0 scsi: libsas: add transport class for ATA devices
Now ata devices attached with sas controller do not have transport
class, so that we can not see any information of these ata devices in
/sys/class/ata_port(or ata_link or ata_device).

Add transport class for the ata devices attached with sas controller.
The /sys/class directory will show the infomation of the ata devices
as follows:

localhost:/sys/class # ls ata*
ata_device:
dev1.0  dev2.0

ata_link:
link1  link2

ata_port:
ata1  ata2

No functional change of the device scanning and io path. The ata
transport class was deleted when destroying the sas devices.

Signed-off-by: Jason Yan <yanaijie@huawei.com>
CC: Dan Williams <dan.j.williams@intel.com>
CC: Tejun Heo <tj@kernel.org>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-04-18 19:32:51 -04:00
John Garry
c90a0bea4f scsi: hisi_sas: remove some unneeded structure members
This patch removes unneeded structure elements:

- hisi_sas_phy.dev_sas_addr: only ever written
	- Also remove associated function which writes it,
	  hisi_sas_init_add().

- hisi_sas_device.attached_phy: only ever written
	- Also remove code to set it in hisi_sas_dev_found()

Signed-off-by: John Garry <john.garry@huawei.com>
Reviewed-by: Xiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-04-18 19:32:51 -04:00
John Garry
381ed6c081 scsi: hisi_sas: print device id for errors
When we find an erroneous slot completion, to help aid debugging add the
device index to the current debug log.

Signed-off-by: John Garry <john.garry@huawei.com>
Reviewed-by: Xiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-04-18 19:32:51 -04:00
Xiaofei Tan
327f242fa8 scsi: hisi_sas: check IPTT is valid before using it for v3 hw
There is a bug of v3 hw development version. When AXI error happen, hw
may return an abnormal CQ that IPTT value is 0xffff.  This will cause
IPTT out-of-bounds reference.

This patch adds a check of IPTT in cq_tasklet_v3_hw() and discards
invalid slot. This workaround scheme is just to enhance fault-tolerance
of the driver. So, we will apply this scheme for all version of v3 hw,
although release version has fixed this SoC bug.

Signed-off-by: Xiaofei Tan <tanxiaofei@huawei.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-04-18 19:32:51 -04:00
Xiaofei Tan
3ff0f0b657 scsi: hisi_sas: consolidate command check in hisi_sas_get_ata_protocol()
Currently we check the fis->command value in 2 locations in
hisi_sas_get_ata_protocol() switch statement. Fix this by consolidating
the check for fis->command value to 1 location only.

Signed-off-by: Xiaofei Tan <tanxiaofei@huawei.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-04-18 19:32:51 -04:00
Xiang Chen
4f4e21b8ff scsi: hisi_sas: use dma_zalloc_coherent()
This is a warning coming from Coccinelle, and need to use new interface
dma_zalloc_coherent() instead of dma_alloc_coherent()/memset().

Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-04-18 19:32:51 -04:00
Xiang Chen
5df41af4b1 scsi: hisi_sas: delete timer when removing hisi_sas driver
Delete timer for v1 and v3 hw when removing hisi_sas driver.

Signed-off-by: Xiang chen <chenxiang66@hisilicon.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-04-18 19:32:51 -04:00