linux.git/drivers/scsi/ibmvscsi, branch master

scsi: ibmvscsi: add write memory barrier to CRQ processing

2016-12-08T22:04:25+00:00

The first byte of each CRQ entry is used to indicate whether an entry is a valid response or free for the VIOS to use. After processing a response the driver sets the valid byte to zero to indicate the entry is now free to be reused. Add a memory barrier after this write to ensure no other stores are reordered when updating the valid byte. Signed-off-by: Tyrel Datwyler Reviewed-by: Brian King Signed-off-by: Martin K. Petersen

scsi: ibmvscsi: log bad SRP response opcode in hex format

2016-12-08T22:03:04+00:00

An unrecogonized or unsupported SRP response has its opcode currently logged in decimal format. Log it in hex format instead so it can easily be validated against the SRP specs values which are in hex. Signed-off-by: Tyrel Datwyler Reviewed-by: Johannes Thumshirn Signed-off-by: Martin K. Petersen

scsi: ibmvscsi: add vscsi hosts to global list_head

2016-12-08T22:02:01+00:00

Add each vscsi host adatper to a new global list_head named ibmvscsi_head. There is no functional change. This is meant primarily as a convience for locating adapters from within the debugger or crash utility. [mkp: fixed typo] Signed-off-by: Tyrel Datwyler Reviewed-by: Johannes Thumshirn Signed-off-by: Martin K. Petersen

scsi: fc: use bsg_job_done

2016-11-18T01:15:26+00:00

fc_bsg_jobdone() and bsg_job_done() are 1:1 copies now so use the bsg-lib one instead of the FC private implementation. Signed-off-by: Johannes Thumshirn Reviewed-by: Hannes Reinecke Acked-by: Tyrel Datwyler Signed-off-by: Martin K. Petersen

scsi: change FC drivers to use 'struct bsg_job'

2016-11-18T01:15:25+00:00

Change FC drivers to use 'struct bsg_job' from bsg-lib.h instead of 'struct fc_bsg_job' from scsi_transport_fc.h and remove 'struct fc_bsg_job'. Signed-off-by: Johannes Thumshirn Reviewed-by: Hannes Reinecke Acked-by: Tyrel Datwyler Signed-off-by: Martin K. Petersen

scsi: fc: provide fc_bsg_to_rport() helper

2016-11-18T01:15:25+00:00

Provide fc_bsg_to_rport() helper that will become handy when we're moving from struct fc_bsg_job to a plain struct bsg_job. Also move all LLDDs to use the new helper. Signed-off-by: Johannes Thumshirn Reviewed-by: Hannes Reinecke Acked-by: Tyrel Datwyler Signed-off-by: Martin K. Petersen

scsi: fc: provide fc_bsg_to_shost() helper

2016-11-18T01:15:25+00:00

Provide fc_bsg_to_shost() helper that will become handy when we're moving from struct fc_bsg_job to a plain struct bsg_job. Also use this little helper in the LLDDs. Signed-off-by: Johannes Thumshirn Reviewed-by: Hannes Reinecke Acked-by: Tyrel Datwyler Signed-off-by: Martin K. Petersen

scsi: fc: Export fc_bsg_jobdone and use it in FC drivers

2016-11-18T01:15:25+00:00

Export fc_bsg_jobdone so drivers can use it directly instead of doing the round-trip via struct fc_bsg_job::job_done() and use it in the LLDDs. That way we can also unify the interfaces of fc_bsg_jobdone and bsg_job_done. As we've converted all LLDDs over to use fc_bsg_jobdone() directly, we can remove the function pointer from struct fc_bsg_job as well. Signed-off-by: Johannes Thumshirn Reviewed-by: Hannes Reinecke Reviewed-by: Christoph Hellwig Acked-by: Tyrel Datwyler Signed-off-by: Martin K. Petersen

scsi: don't use fc_bsg_job::request and fc_bsg_job::reply directly

2016-11-18T01:15:24+00:00

Don't use fc_bsg_job::request and fc_bsg_job::reply directly, but use helper variables bsg_request and bsg_reply. This will be helpful when transitioning to bsg-lib. Signed-off-by: Johannes Thumshirn Reviewed-by: Hannes Reinecke Signed-off-by: Martin K. Petersen

scsi: ibmvfc: Fix I/O hang when port is not mapped

2016-09-19T23:50:33+00:00

If a VFC port gets unmapped in the VIOS, it may not respond with a CRQ init complete following H_REG_CRQ. If this occurs, we can end up having called scsi_block_requests and not a resulting unblock until the init complete happens, which may never occur, and we end up hanging I/O requests. This patch ensures the host action stay set to IBMVFC_HOST_ACTION_TGT_DEL so we move all rports into devloss state and unblock unless we receive an init complete. Cc: Signed-off-by: Brian King Acked-by: Tyrel Datwyler Signed-off-by: Martin K. Petersen