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* scsi: qla2xxx: Add retry limit for fabric scan logicQuinn Tran2018-01-043-12/+23
| | | | | | | | | Switch scan is assumed to succeed most of the time. If the scan failed, then scan is limit 5 retries. Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: qla2xxx: Delay loop id allocation at loginQuinn Tran2018-01-041-29/+35
| | | | | | | | Delay loop id allocation to login time Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: qla2xxx: Increase verbosity of debug messages loggedQuinn Tran2018-01-041-4/+4
| | | | | | | | | Add verbose bit for debug messages to reduce excessive log messages Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: qla2xxx: Allow relogin and session creation after resethimanshu.madhani@cavium.com2018-01-041-1/+0Star
| | | | | | | | | | When any kind of reset is issued, current code was setting state of LOGIN pending too early. This resulted into driver not retrying relogin until pervious reloin completes. Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: qla2xxx: Add ability to use GPNFT/GNNFT for RSCN handlingQuinn Tran2018-01-045-60/+113
| | | | | | | | add ability to use gpnft/gnnft to handle RSCN. Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: qla2xxx: Properly extract ADISC error codesQuinn Tran2018-01-041-8/+16
| | | | | | | | | This patch fixes issue with extraction of ADISC error codes for decoding the error returned Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: qla2xxx: Fix GPNFT/GNNFT error handlingQuinn Tran2018-01-042-4/+19
| | | | | | | | retry gpnft/gnnft if error is encountered. Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: qla2xxx: Remove session creation redundant codeQuinn Tran2018-01-041-117/+5Star
| | | | | | | | | | Current code creates a session when a new port is discovered, and a PLOGI/PRLI is received. There is no need to create session when command has arrived. Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: qla2xxx: Migrate switch registration commands away from mailbox interfaceQuinn Tran2018-01-046-144/+347
| | | | | | | | | Migrate switch registration commands: RFTID, RFFID, RNNID and RSNN_NN out of mailbox interface to reduce fabric scan bottle neck. Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: qla2xxx: Fix login state machine freezeQuinn Tran2018-01-041-6/+0Star
| | | | | | | | Relogin stop moving forward due to improper check of scan_state flag. Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: qla2xxx: Reduce trace noise for Async EventsQuinn Tran2018-01-041-2/+9
| | | | | | | | | Add NPIV id check to reduce multiple debug messages of the same RSCN event. Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: qla2xxx: Reduce the use of terminate exchangeQuinn Tran2018-01-041-66/+74
| | | | | | | | | | reduce usage of terminate exchange when command encounter resource bottle neck. Remote initiator view it as command drop. Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: qla2xxx: Add lock protection around host lookupQuinn Tran2018-01-043-10/+8Star
| | | | | | | | | Host lookup via btree is currently protected by the hardware_lock. Add hardware_lock when modifying btree to store host pointer. Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: qla2xxx: Add switch command to simplify fabric discoveryQuinn Tran2018-01-049-121/+1103
| | | | | | | | | | - add "async" gpn_ft, gnn_ft, gfpn_id, gnn_id switch commands. - For 8G and newer adapters, use async commands when it comes to fabric scan to reduce bottle neck. Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: qla2xxx: Use known NPort ID for Management Server loginhimanshu.madhani@cavium.com2018-01-043-4/+4
| | | | | Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: qla2xxx: Fix session cleanup for N2NQuinn Tran2018-01-047-155/+378
| | | | | | | | | | | | | | | | | | | | | When connection type is N_Port to N_Port (point-to-point), there is a possibilty where initiator will not send PLOGI request and will directly send PRLI. In N2N connection the port has higher port name sends the PLOGI but not allow to send PRLI if is a target mode. Only initiator is allowed to send PRLI. Current driver code deletes old session when it receives PLOGI request. If we will not receive PLOGI request then we will not delete old session and create new session. Add check for N2N with PRLI receive only and trigger cleanup. For this case, the cleanup requires individual cmd abort instead of using implicit logout as a broad stroke flush. Signed-off-by: Krishna Kant <krishna.kant@purestorage.com> Signed-off-by: Alexei Potashnik <alexei@purestorage.com> Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: qla2xxx: Tweak resource count dumpQuinn Tran2018-01-043-15/+48
| | | | | | | | | Fetch actual data from firmware instead of static data at chip reset time. Signed-off-by: Quinn Tran <quinn.tran@qlogic.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: qla2xxx: Allow target mode to accept PRLI in dual modeQuinn Tran2018-01-042-3/+18
| | | | | | | | | | For Dual Mode, Initiator side of the driver finish login, target side receive PRLI, but driver terminates PRLI. This patch allows target side to go ahead and accept PRLI. Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: qla2xxx: Don't call dma_free_coherent with IRQ disabled.Giridhar Malavali2018-01-041-1/+2
| | | | | | | | | | | | | | The logo ELS command allocates dma coherent memory for the data payload and serialize the completions. When this command times out, the timeout routine completes the thread waiting for completion which in turn cleanup resources allocated for this ELS command processing. Don't call generic sp->free routine when this ELS command times out to avoid to double freeing of the same resources. Signed-off-by: Giridhar Malavali <giridhar.malavali@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: qla2xxx: Add ability to send PRLOQuinn Tran2018-01-045-0/+96
| | | | | | | | | Add ability to send Implicit PRLO to flush IOs from FW back to driver. Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: qla2xxx: Add option for use reserve exch for ELSQuinn Tran2018-01-043-0/+13
| | | | | | | | Add option to tell FW to reserve 1/2 of emergency exchanges for ELS. Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: qla2xxx: Use shadow register for ISP27XXQuinn Tran2018-01-041-1/+3
| | | | | | | | | For ISP27XX, use shadow register to read FW provided REQQ's consumer index. The shadow register is dma'ed by firmware. Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: qla2xxx: Enable ATIO interrupt handshake for ISP27XXQuinn Tran2018-01-041-14/+25
| | | | | | | | | | | Enable ATIO Q interrupt handshake for ISP27XX. This patch coalesce ATIO's interrupts for Quad port ISP27XX adapter. Interrupt coalesce allows performance to scale for this specific case. Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: qla2xxx: Move work element processing out of DPC threadQuinn Tran2018-01-045-27/+63
| | | | | | | | | | | DPC thread can stall during switch scan due to slow switch response. This will stall other work element that needs attention. Moving work element processing and relogin logic out of DPC thread and into its own work queue. Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: qla2xxx: Replace GPDB with async ADISC commandQuinn Tran2018-01-043-37/+50
| | | | | | | | | | Replace call to Get Port DataBase MB with PDO_FORCE_ADISC flag with async ADISC command so driver can see ADISC command has error or not. Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: qla2xxx: Fix Firmware dump size for Extended login and Exchange OffloadQuinn Tran2018-01-042-102/+147
| | | | | | | | | | This patch adjusts and reallocates fw_dump memory for target mode to save for extended login and exchange offload buffers into dump captured. Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: qla2xxx: Chip reset uses wrong lock during IO flush.Quinn Tran2018-01-041-74/+84
| | | | | | | | | | As part of chip reset, all commands from all QPairs are flushed. This patch fixes code to use Q Pair lock for flush instead of using old hardware_lock. Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: qla2xxx: Add boundary checks for exchanges to be offloadedQuinn Tran2018-01-042-9/+33
| | | | | | | | | | | Max boundary for exchange off load is 32k exchanges. If a system is unable to allocate large memory buffer to support this feature, then driver will reduce the number of exchanges down to a value system can support. Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: qla2xxx: Use chip reset to bring down laser on unload.Quinn Tran2018-01-041-35/+17Star
| | | | | | | | | | | | Current code uses Stop Firmware MB cmd to stop the chip before driver unload. This will leave the laser in its current state. This give the illusion of this adapter is still alive. For 8G & newer adapters, use chip reset to stop the chip and bring down the laser. Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: qla2xxx: Use IOCB path to submit Control VP MBX commandQuinn Tran2018-01-047-77/+143
| | | | | | | | | Use IOCB patch to submit Control VP MBX command to reduce bottle-neck for mbx interface. Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: qla2xxx: Fix NULL pointer access for fcport structureQuinn Tran2018-01-041-4/+9
| | | | | | | | | | | when processing iocb in a timeout case, driver was trying to log messages without verifying if the fcport structure could have valid data. This results in a NULL pointer access. Fixes: 726b85487067("qla2xxx: Add framework for async fabric discovery") Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: hpsa: drop unneeded newlineJulia Lawall2018-01-041-1/+1
| | | | | | | | | | hpsa_show_dev_msg prints other information and a newline after the message string, so the message string does not need to include a newline explicitly. Done using Coccinelle. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Acked-by: Don Brace <don.brace@microsemi.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: aacraid: Update driver version to 50877Raghava Aditya Renukunta2018-01-041-1/+1
| | | | | | | Update driver Version to 50877 Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: aacraid: Remove AAC_HIDE_DISK check in queue commandRaghava Aditya Renukunta2018-01-042-13/+0Star
| | | | | | | | | | | | | Earlier driver would scan throgh all supported buses and targets and add devices that responded. It would add devices that were _hidden_ by the fw. Driver would invalidate commands sent to _hidden_ devices via the AAC_HIDE_DISK check. Since the driver now adds only the devices that are supposed to be exposed, this code can be removed. Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: aacraid: Remove unused rescan variableRaghava Aditya Renukunta2018-01-044-22/+21Star
| | | | | | | Remove unused rescan variable. Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: aacraid: Skip schedule rescan in case of kdumpRaghava Aditya Renukunta2018-01-041-1/+2
| | | | | | | | | | | | There is a chance of the driver to be stuck in kdump if drives start acting up in kdump discovery process and the kernel decides to send eh resets, which would prompt rescan to be scheduled. Do not perform a rescan in kdump context, since we do not expect a hotplug event during kdump and all the devices are going to go away anyway. Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: aacraid: Fix hang while scanning in eh recoveryRaghava Aditya Renukunta2018-01-042-0/+13
| | | | | | | | | | Add back the ability to scan for hotplug changes while eh was in progress. Schedule a rescan for a later time in the eh recovery code and wait for eh to complete in the rescan worker. Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: aacraid: Reschedule host scan in case of failureRaghava Aditya Renukunta2018-01-043-2/+44
| | | | | | | | | | | | If the driver fails to retrieve information from the fw (could happen when the fw is not fully in its senses), the driver does nothing and change is not processed correctly by the driver Schedule host rescan in case of failure. This is only for SAFW, since the information retrieval failure will happen on SAFW devices. Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: aacraid: Use hotplug handling function in place of scsi_scan_hostRaghava Aditya Renukunta2018-01-044-9/+19
| | | | | | | | | | | | | Driver uses scsi_scan_host to add new devices in the driver init path, which adds all the fw exposed devices. The drivers resorts to queue command checks to block out commands to _hidden_ devices. Use the hotplug handler code to add new devices during driver init and other areas, this is only for safw. For ARC scsi_scan_host will still apply. Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: aacraid: Block concurrent hotplug event handlingRaghava Aditya Renukunta2018-01-043-0/+4
| | | | | | | | | | Currently driver will attempt to process hotplug events concurrently based on the FW interrupt. Protect safw update function with a scan mutex. Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: aacraid: Merge adapter setup with resolve lunsRaghava Aditya Renukunta2018-01-041-5/+12
| | | | | | | | | | | The device hotplug events are processed only after retrieving the updated lun information from the fw. Does not make sense to keep them separate. Merge both the hotplug handling and safw adapter setup code into single function. Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: aacraid: Refactor resolve luns code and scsi functionsRaghava Aditya Renukunta2018-01-041-17/+54
| | | | | | | | | | | | | Resolve luns checks the if a sdev is already present in the os to figure out if it needs to be removed. Internally the driver exposes HBA on bus 2 even though its bus 1 in the fw. Its mildly confusing. Refactor out the sdev lookup into its function to check if sdev has been added to the kernel or not. Add helper functions to add, remove and put devices based on their fw bus and target number. Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: aacraid: Added macros to help loop through known buses and targetsRaghava Aditya Renukunta2018-01-042-17/+21
| | | | | | | | Added macros to loop through the MAX SUPPORTED Buses and Targets. This will make the code a bit easier to read. Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: aacraid: Process hba and container hot plug events in single functionRaghava Aditya Renukunta2018-01-043-41/+30Star
| | | | | | | | | | | | | The hotplug handler code is duplicated for hba handling and container handling. Merged function to handle hba and container hot plug events into the resolve luns functions. Added a bunch of helper functions to check the validity of a given target and to check if bus, target is container device. Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: aacraid: Merge func to get container informationRaghava Aditya Renukunta2018-01-042-19/+19
| | | | | | | | Merge aac_get_containers to setup target function, so that information about all the present devices can be retrieved in one shot. Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: aacraid: Add helper function to set queue depthRaghava Aditya Renukunta2018-01-041-13/+24
| | | | | | | | Add helper function to set queue depth from information retrieved from the bmic phy structure. Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: aacraid: Save bmic phy information for each phyRaghava Aditya Renukunta2018-01-042-6/+79
| | | | | | | | Save the bmic information for each phy, so that it can processed in target setup function. Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: aacraid: Create helper functions to get lun infoRaghava Aditya Renukunta2018-01-041-12/+42
| | | | | | | | Created inline function to retrieve lun info for each device from the phy luns structure. Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: aacraid: Move function around to match existing codeRaghava Aditya Renukunta2018-01-041-56/+56
| | | | | | | | Move the function to get phy luns information to the top of function to set target information Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: aacraid: Untangle targets setup from report phy lunsRaghava Aditya Renukunta2018-01-042-11/+34
| | | | | | | | | Remove function call to process targets from the report phy luns function and make it a function in its own right. This will help understand the flow of the code. Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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