linux/drivers/scsi/mpt3sas
Chaitra P B 6b4c335a0f scsi: mpt3sas: Fix Firmware fault state 0x2100 during heavy 4K RR FIO stress test.
Due existence of loop in the IO path our HBA will receive heavy IOs and
also as driver is not updating the Reply Post Host Index frequently, So
there will be a high chance that our Firmware unable to find any free
entry in the Reply Post Descriptor Queue (i.e. Queue overflow occurs)
and can observe 0x2100 firmware fault.  So to fix this, we have defined
a thresh hold value. After continuously processing this thresh hold
number of reply descriptors driver will update the Reply Descriptor Host
Index so that this thresh hold number of reply descriptors entries will
be freed and these entries will be available for firmware and we won't
observe this Firmware fault. We have defined this threshold value as
1/3rd of the hba queue depth.

Signed-off-by: Chaitra P B <chaitra.basappa@broadcom.com>
Signed-off-by: Suganath Prabu S <suganath-prabu.subramani@broadcom.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-31 22:03:35 -05:00
..
mpi scsi: mpt3sas: Added print to notify cable running at a degraded speed. 2017-01-31 22:03:35 -05:00
Kconfig mpt3sas: fix Kconfig dependency problem for mpt2sas back compatibility 2015-12-03 09:31:23 -08:00
Makefile mpt3sas: Single driver module which supports both SAS 2.0 & SAS 3.0 HBAs 2015-11-11 19:50:11 -05:00
mpt3sas_base.c scsi: mpt3sas: Fix Firmware fault state 0x2100 during heavy 4K RR FIO stress test. 2017-01-31 22:03:35 -05:00
mpt3sas_base.h scsi: mpt3sas: Fix for Crusader to achieve product targets with SAS devices. 2017-01-31 22:03:35 -05:00
mpt3sas_config.c scsi: mpt3sas: Use the new MPI 2.6 32-bit Atomic Request Descriptors for SAS35 devices. 2016-11-08 17:29:59 -05:00
mpt3sas_ctl.c scsi: mpt3sas: Fix for Crusader to achieve product targets with SAS devices. 2017-01-31 22:03:35 -05:00
mpt3sas_ctl.h scsi: mpt3sas: Added Device ID's for SAS35 devices and updated MPI header. 2016-11-08 17:29:59 -05:00
mpt3sas_debug.h mpt2sas, mpt3sas: Remove SCSI_MPTXSAS_LOGGING entry from Kconfig 2015-11-11 18:31:14 -05:00
mpt3sas_scsih.c scsi: mpt3sas: Fix for Crusader to achieve product targets with SAS devices. 2017-01-31 22:03:35 -05:00
mpt3sas_transport.c scsi: mpt3sas: Use the new MPI 2.6 32-bit Atomic Request Descriptors for SAS35 devices. 2016-11-08 17:29:59 -05:00
mpt3sas_trigger_diag.c mpt2sas, mpt3sas: Update attribution language to Avago 2015-01-13 16:27:27 +01:00
mpt3sas_trigger_diag.h mpt2sas, mpt3sas: Update attribution language to Avago 2015-01-13 16:27:27 +01:00
mpt3sas_warpdrive.c mpt3sas: Single driver module which supports both SAS 2.0 & SAS 3.0 HBAs 2015-11-11 19:50:11 -05:00