- 12 Apr, 2017 4 commits
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Hannes Reinecke authored
The 'reserved' page array is used as a short-cut for mapping data, saving us to allocate pages per request. However, the 'reserved' array is only capable of holding one request, so this patch introduces a mutex for protect 'sg_fd' against concurrent accesses. Signed-off-by:
Hannes Reinecke <hare@suse.com> Reviewed-by:
Johannes Thumshirn <jthumshirn@suse.de> Tested-by:
Christoph Hellwig <hch@lst.de> Signed-off-by:
Martin K. Petersen <martin.petersen@oracle.com>
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Hannes Reinecke authored
Unused. Signed-off-by:
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Hannes Reinecke authored
The ioctl SET_FORCE_LOW_DMA has never worked since the initial git check-in, and the respective setting is nowadays handled correctly. So disable it entirely. Signed-off-by:
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Colin Ian King authored
There are several local or function parameter pointers that are being assigned NULL after a kfree where and these have no effect and hence can be removed. Fixes various cppcheck warnings: "Assignment of function parameter has no effect outside the function. Did you forget dereferencing it" Signed-off-by:
Colin Ian King <colin.king@canonical.com> Acked-by:
Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by:
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- 06 Apr, 2017 12 commits
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Nicholas Mc Guire authored
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:
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Hannes Reinecke authored
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:
Bart Van Assche <bart.vanassche@sandisk.com> Reviewed-by:
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Hannes Reinecke authored
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:
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Hannes Reinecke authored
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:
Benjamin Block <bblock@linux.vnet.ibm.com> Reviewed-by:
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Christoph Hellwig authored
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:
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Hannes Reinecke authored
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:
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Hannes Reinecke authored
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:
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Hannes Reinecke authored
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: 18a4d0a2 ("[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:
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Christoph Hellwig authored
And get automatic MSI-X affinity for free. Signed-off-by:
Varun Prakash <varun@chelsio.com> Signed-off-by:
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Mauricio Faria de Oliveira authored
The commit 08024885 ("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: 08024885 ("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:
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Bart Van Assche authored
Now that all scsi_device_get() callers check the return value of this function, make checking that return value mandatory. Signed-off-by:
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Bart Van Assche authored
scsi_device_get() can fail. Hence check its return value. Signed-off-by:
Boaz Harrosh <ooo@electrozaur.com> Signed-off-by:
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- 05 Apr, 2017 2 commits
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Johannes Thumshirn authored
sas_domain_release_transport is unused since at least v3.13, remove it. Signed-off-by:
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Milan P Gandhi authored
Signed-off-by:
Milan P Gandhi <mgandhi@redhat.com> Signed-off-by:
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- 04 Apr, 2017 1 commit
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Arnd Bergmann authored
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:
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- 30 Mar, 2017 12 commits
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Christoph Hellwig authored
And get automatic MSI-X affinity for free. Signed-off-by:
Jitendra Bhivare <jitendra.bhivare@broadcom.com> Signed-off-by:
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Szymon Mielczarek authored
This reverts commit 61e07359. 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:
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Don Brace authored
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:
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Don Brace authored
Reviewed-by:
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Arnd Bergmann authored
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: 7c594f04 ("scsi: hisi_sas: add softreset function for SATA disk") Signed-off-by:
John Garry <john.garry@huawei.com> Signed-off-by:
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Tomohiro Kusumi authored
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:
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Tomohiro Kusumi authored
These flags are no longer needed after 2fbd009b in 2013. Signed-off-by:
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Tomohiro Kusumi authored
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:
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Tomohiro Kusumi authored
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:
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Tomohiro Kusumi authored
Signed-off-by:
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Tomohiro Kusumi authored
ufshcd driver generally uses bool for is_xxx type things instead of int, so conform to its style. Signed-off-by:
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Colin Ian King authored
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: 634a9585 ("scsi: hisi_sas: process error codes according to their priority") Signed-off-by:
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- 28 Mar, 2017 9 commits
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Jack Wang authored
The email address is undeliverable for some time now, so just remove it. Signed-off-by:
Jack Wang <jinpu.wang@profitbricks.com> Signed-off-by:
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Jitendra Bhivare authored
Version 11.4.0.0 Signed-off-by:
Tomas Henzl <thenzl@redhat.com> Reviewed-by:
Chris Leech <cleech@redhat.com> Signed-off-by:
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Jitendra Bhivare authored
Update Broadcom Copyright markings in all files. Signed-off-by:
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Jitendra Bhivare authored
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:
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Jitendra Bhivare authored
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:
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Jitendra Bhivare authored
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:
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Jitendra Bhivare authored
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:
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Jitendra Bhivare authored
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:
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Jitendra Bhivare authored
spin_unlock_bh back_lock is used in beiscsi_eh_device_reset instead of spin_lock. Signed-off-by:
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