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* | scsi: ibmvscsis: Clean up properly if target_submit_cmd/tmr failsMichael Cyr2016-11-081-0/+7
| | | | | | | | | | | | | | Signed-off-by: Michael Cyr <mikecyr@us.ibm.com> Signed-off-by: Bryant G. Ly <bryantly@linux.vnet.ibm.com> Tested-by: Steven Royer <seroyer@linux.vnet.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* | scsi: ibmvscsis: Synchronize cmds at remove timeMichael Cyr2016-11-082-5/+37
| | | | | | | | | | | | | | | | | | | | | | This patch adds code to disconnect from the client, which will make sure any outstanding commands have been completed, before continuing on with the remove operation. Signed-off-by: Michael Cyr <mikecyr@us.ibm.com> Signed-off-by: Bryant G. Ly <bryantly@linux.vnet.ibm.com> Tested-by: Steven Royer <seroyer@linux.vnet.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* | scsi: ibmvscsis: Synchronize cmds at tpg_enable_store timeMichael Cyr2016-11-082-188/+38
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch changes the way the IBM vSCSI server driver manages its Command/Response Queue (CRQ). We used to register the CRQ with phyp at probe time. Now we wait until tpg_enable_store. Similarly, when tpg_enable_store is called to "disable" (i.e. the stored value is 0), we unregister the queue with phyp. One consquence to this is that we have no need for the PART_UP_WAIT_ENAB state, since we can't get an Init Message from the client in our CRQ if we're waiting to be enabled, since we haven't registered the queue yet. Signed-off-by: Michael Cyr <mikecyr@us.ibm.com> Signed-off-by: Bryant G. Ly <bryantly@linux.vnet.ibm.com> Tested-by: Steven Royer <seroyer@linux.vnet.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* | scsi: ibmvscsis: Rearrange functions for future patchesMichael Cyr2016-11-081-328/+330
|/ | | | | | | | | | | | | | | | This patch reorders functions in a manner necessary for a follow-on patch. It also makes some minor styling changes (mostly removing extra spaces) and fixes some typos. There are no code changes in this patch, with one exception: due to the reordering of the functions, I needed to explicitly declare a function at the top of the file. However, this will be removed in the next patch, since the code requiring the predeclaration will be removed. Signed-off-by: Michael Cyr <mikecyr@us.ibm.com> Signed-off-by: Bryant G. Ly <bryantly@linux.vnet.ibm.com> Tested-by: Steven Royer <seroyer@linux.vnet.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: ibmvscsis: Fixed unused variableBryant G. Ly2016-09-191-3/+0
| | | | | | | | [mkp: applied by hand] Signed-off-by: Bryant G. Ly <bryantly@linux.vnet.ibm.com> Reviewed-by: Tyrel Datwyler <tyreld@linux.vnet.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: ibmvscsis: Fix error return code in ibmvscsis_probe()Wei Yongjun2016-09-151-0/+1
| | | | | | | | | Fix to return error code -ENOMEM from the dma mapping error handling case instead of 0, as done elsewhere in this function. Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: ibmvscsis: Fixed a bug reported by Dan CarpenterBryant G. Ly2016-09-041-1/+1
| | | | | | | | SUPPORTED_FORMATS is 1 << 1 so it's never zero. Signed-off-by: Bryant G. Ly <bryantly@linux.vnet.ibm.com> Signed-off-by: Michael Cyr <mikecyr@linux.vnet.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: ibmvscsis: Code cleanup of print statementsBryant G. Ly2016-09-041-24/+2
| | | | | | | | [mkp: applied by hand] Signed-off-by: Bryant G. Ly <bryantly@linux.vnet.ibm.com> Signed-off-by: Michael Cyr <mikecyr@linux.vnet.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: ibmvscsis: Properly deregister target sessionsBryant G. Ly2016-09-041-0/+2
| | | | | | | | | The driver currently doesn't properly deregisters target sessions completely, so this will address that. Signed-off-by: Bryant G. Ly <bryantly@linux.vnet.ibm.com> Signed-off-by: Michael Cyr <mikecyr@linux.vnet.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: ibmvscsis: Use list_move_tail instead of list_del/list_add_tailWei Yongjun2016-08-311-2/+1
| | | | | | | | Using list_move_tail() instead of list_del() + list_add_tail(). Signed-off-by: Wei Yongjun <weiyj.lk@gmail.com> Reviewed-by: Tyrel Datwyler <tyreld@linux.vnet.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* ibmvscsis: Initial commit of IBM VSCSI Tgt DriverBryant G. Ly2016-07-205-0/+4986
This driver is a pick up of the old IBM VIO scsi Target Driver that was started by Nick and Fujita 2-4 years ago. http://comments.gmane.org/gmane.linux.scsi/90119 The driver provides a virtual SCSI device on IBM Power Servers. This patch contains the fifth version for an initial merge of the tcm ibmvscsis driver. More information on this driver and config can be found: https://github.com/powervm/ibmvscsis/wiki/Configuration http://www.linux-iscsi.org/wiki/IBM_vSCSI (Drop extra libsrp review breakage + Fix kconfig typo - nab) Signed-off-by: Steven Royer <seroyer@linux.vnet.ibm.com> Signed-off-by: Tyrel Datwyler <tyreld@linux.vnet.ibm.com> Signed-off-by: Michael Cyr <mikecyr@linux.vnet.ibm.com> Signed-off-by: Bryant G. Ly <bryantly@linux.vnet.ibm.com> Cc: FUJITA Tomonori <tomof@acm.org> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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