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* hpsa: correct handling of HBA device removalDon Brace2016-04-301-0/+1
| | | | | | | | | | | | | | Need to report HBA device removal faster than the event handler polling interval. Stop I/O to the removed disk and wait for all I/O operations to flush before removing the device. Reviewed-by: Scott Teel <scott.teel@microsemi.com> Reviewed-by: Kevin Barnett <kevin.barnett@microsemi.com> Signed-off-by: Don Brace <don.brace@microsemi.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* hpsa: update copyright informationDon Brace2016-02-241-1/+2
| | | | | | | | Reviewed-by: Justin Lindley <justin.lindley@microsemi.com> Reviewed-by: Kevin Barnett <kevin.barnett@microsemi.com> Reviewed-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com> Signed-off-by: Don Brace <don.brace@microsemi.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* hpsa: Change SAS transport devices to bus 0.Don Brace2016-01-061-1/+1
| | | | | | | | | | | | | SAS transport places devices on bus 0 but driver was setting the bus to 3. Reviewed-by: Justin Lindley <justin.lindley@pmcs.com> Reviewed-by: Kevin Barnett <kevin.barnett@pmcs.com> Reviewed-by: Scott Teel <scott.teel@pmcs.com> Reviewed-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Don Brace <don.brace@pmcs.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* hpsa: add in sas transport classKevin Barnett2015-11-091-0/+27
| | | | | | | | | | | Reviewed-by: Scott Teel <scott.teel@pmcs.com> Reviewed-by: Justin Lindley <justin.lindley@pmcs.com> Reviewed-by: Kevin Barnett <kevin.barnett@pmcs.com> Reviewed-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Reviewed-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com> Signed-off-by: Don Brace <don.brace@pmcs.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* hpsa: add discovery polling for PT RAID devices.Scott Teel2015-11-091-0/+2
| | | | | | | | | | | | | | | | | | | | | There are problems with getting configuration change notification in pass-through RAID environments. So, activate flag h->discovery_polling when one of these devices is detected in update_scsi_devices. After discovery_polling is set, execute a report luns from rescan_controller_worker (every 30 seconds). If the data from report_luns is different than last time (binary compare), execute a full rescan via update_scsi_devices. Reviewed-by: Scott Teel <scott.teel@pmcs.com> Reviewed-by: Justin Lindley <justin.lindley@pmcs.com> Reviewed-by: Kevin Barnett <kevin.barnett@pmcs.com> Reviewed-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com> Signed-off-by: Don Brace <don.brace@pmcs.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* hpsa: generalize external arraysScott Teel2015-11-091-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | External array LUNs must use target and lun numbers assigned by the external array. So the driver must treat these differently from local LUNs when assigning lun/target. LUN's 'model' field has been used to detect Lun types that need special treatment, but the desire is to eliminate the need to reference specific array models, and support any external array. Pass-through RAID (PTRAID) luns are not luns of the local controller, so they are not reported in LUN count of command 'ID controller'. However, they ARE reported in "Report logical Luns" command. Local luns are listed first, then PTRAID LUNs. The number of luns from "Report LUNs" in excess of those reported by 'ID controller' are therefore the PTRAID LUNS. We can now remove function is_ext_target, and the 'white list' array of supported model names. Reviewed-by: Scott Teel <scott.teel@pmcs.com> Reviewed-by: Justin Lindley <justin.lindley@pmcs.com> Reviewed-by: Kevin Barnett <kevin.barnett@pmcs.com> Signed-off-by: Don Brace <don.brace@pmcs.com> Reviewed-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* hpsa: refactor hpsa_figure_bus_target_lunKevin Barnett2015-11-091-0/+5
| | | | | | | | | | | | | setup for sas transport. Need to set the bus and target accordingly. Reviewed-by: Scott Teel <scott.teel@pmcs.com> Reviewed-by: Justin Lindley <justin.lindley@pmcs.com> Reviewed-by: Kevin Barnett <kevin.barnett@pmcs.com> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Don Brace <don.brace@pmcs.com> Reviewed-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* hpsa: simplify update scsi devicesKevin Barnett2015-11-091-0/+1
| | | | | | | | | | | | | | remove repeated calculation that checks for physical or logical devices. Reviewed-by: Scott Teel <scott.teel@pmcs.com> Reviewed-by: Justin Lindley <justin.lindley@pmcs.com> Reviewed-by: Kevin Barnett <kevin.barnett@pmcs.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Reviewed-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Don Brace <don.brace@pmcs.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* hpsa: simplify check for device exposureKevin Barnett2015-11-091-5/+1
| | | | | | | | | | | | remove macros and cleanup device exposure checking Reviewed-by: Scott Teel <scott.teel@pmcs.com> Reviewed-by: Justin Lindley <justin.lindley@pmcs.com> Reviewed-by: Kevin Barnett <kevin.barnett@pmcs.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Don Brace <don.brace@pmcs.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* hpsa: fix physical target resetScott Teel2015-11-091-0/+1
| | | | | | | | | | | | | | Set reset type in device_reset_handler to do either logical unit reset for logical devices, or physical target reset, for physical devices. Reviewed-by: Scott Teel <scott.teel@pmcs.com> Reviewed-by: Justin Lindley <justin.lindley@pmcs.com> Reviewed-by: Kevin Barnett <kevin.barnett@pmcs.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Don Brace <don.brace@pmcs.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* hpsa: fix hpsa_adjust_hpsa_scsi_tableDon Brace2015-11-091-0/+1
| | | | | | | | | Fix a NULL pointer issue in the driver when devices are removed during a reset. Signed-off-by: Don Brace <don.brace@pmcs.com> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* hpsa: allow driver requested rescansDon Brace2015-11-091-0/+1
| | | | | | | | | | Reviewed-by: Scott Teel <scott.teel@pmcs.com> Reviewed-by: Justin Lindley <justin.lindley@pmcs.com> Reviewed-by: Kevin Barnett <kevin.barnett@pmcs.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Reviewed-by; Hannes Reinecke <hare@suse.de> Signed-off-by: Don Brace <don.brace@pmcs.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* hpsa: change devtype to unsignedDon Brace2015-11-091-1/+1
| | | | | | | | | | | | This member is used in calls to scsi_device_type. It should be unsigned since the kernel checks for upper bounds and it should never be negative. Suggested-by: Tomas Henzl <thenzl@redhat.com> Suggested-by: Hannes Reinecke <hare@suse.de> Suggested-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com> Signed-off-by: Don Brace <don.brace@pmcs.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* Change how controllers in mixed mode are handled.Kevin Barnett2015-08-271-2/+0
| | | | | | | | Reviewed-by: Kevin Barnett <kevin.barnett@pmcs.com> Reviewed-by: Scott Teel <scott.teel@pmcs.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Don Brace <don.brace@pmcs.com> Signed-off-by: James Bottomley <JBottomley@Odin.com>
* hpsa: add sysfs entry path_info to show box and bay informationJoe Handzik2015-08-271-0/+5
| | | | | | | | | | | | | host no, bus, target, lun, scsi_device_type for hba mode add: box and bay information report if the path is active/inactive Reviewed-by: Kevin Barnett <kevin.barnett@pmcs.com> Reviewed-by: Scott Teel <scott.teel@pmcs.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Don Brace <don.brace@pmcs.com> Signed-off-by: James Bottomley <JBottomley@Odin.com>
* hpsa: add PMC to copyrightDon Brace2015-08-271-6/+3
| | | | | | | | | | | need to add PMC to copyright notice and update the Hewlett-Packard copyright notification. Reviewed-by: Scott Teel <scott.teel@pmcs.com> Reviewed-by: Kevin Barnett <kevin.barnett@pmcs.com> Reviewed-by: Justin Lindley <justin.lindley@pmcs.com> Signed-off-by: Don Brace <don.brace@pmcs.com> Signed-off-by: James Bottomley <JBottomley@Odin.com>
* hpsa: cleanup resetWebb Scales2015-06-011-1/+4
| | | | | | | | | | | | | | | | | | | | | Synchronize completion the reset with completion of outstanding commands Extending the newly-added synchronous abort functionality, now also synchronize resets with the completion of outstanding commands. Rename the wait queue to reflect the fact that it's being used for both types of waits. Also, don't complete commands which are terminated due to a reset operation. fix for controller lockup during reset Reviewed-by: Scott Teel <scott.teel@pmcs.com> Reviewed-by: Kevin Barnett <kevin.barnett@pmcs.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Reviewed-by: Hannes Reinecke <hare@Suse.de> Signed-off-by: Webb Scales <webbnh@hp.com> Signed-off-by: Don Brace <don.brace@pmcs.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: James Bottomley <JBottomley@Odin.com>
* hpsa: use block layer tag for command allocationWebb Scales2015-05-311-1/+0
| | | | | | | | | | | | | | | | | | | | | | | Rework slave allocation: - separate the tagging support setup from the hostdata setup - make the hostdata setup act consistently when the lookup fails - make the hostdata setup act consistently when the device is not added - set up the queue depth consistently across these scenarios - if the block layer mq support is not available, explicitly enable and activate the SCSI layer tcq support (and do this at allocation-time so that the tags will be available for INQUIRY commands) Tweak slave configuration so that devices which are masked are also not attached. Reviewed-by: Scott Teel <scott.teel@pmcs.com> Reviewed-by: Kevin Barnett <kevin.barnett@pmcs.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Reviewed-by: Hannes Reinecke <hare@Suse.de> Signed-off-by: Webb Scales <webbnh@hp.com> Signed-off-by: Don Brace <don.brace@pmcs.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: James Bottomley <JBottomley@Odin.com>
* hpsa: add interrupt number to /proc/interrupts interrupt nameRobert Elliott2015-05-311-0/+1
| | | | | | | | | | | | | | | | | | | Add the interrupt number to the interrupt names that appear in /proc/interrupts, so they are unique Also, delete the IRQ and DAC prints. Other parts of the kernel already print the IRQ assignments, and dual-address-cycle support has not been interesting since the parallel PCI bus went from 32 to 64 bits wide. Reviewed-by: Scott Teel <scott.teel@pmcs.com> Reviewed-by: Kevin Barnett <kevin.barnett@pmcs.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Reviewed-by: Hannes Reinecke <hare@Suse.de> Signed-off-by: Robert Elliott <elliott@hp.com> Signed-off-by: Don Brace <don.brace@pmcs.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: James Bottomley <JBottomley@Odin.com>
* hpsa: don't return abort request until target is completeWebb Scales2015-05-311-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Don't return from the abort request until the target command is complete. Mark outstanding commands which have a pending abort, and do not send them to the host if we can avoid it. If the current command has been aborted, do not call the SCSI command completion routine from the I/O path: when the abort returns successfully, the SCSI mid-layer will handle the completion implicitly. The following race was possible in theory. 1. LLD is requested to abort a scsi command 2. scsi command completes 3. The struct CommandList associated with 2 is made available. 4. new io request to LLD to another LUN re-uses struct CommandList 5. abort handler follows scsi_cmnd->host_scribble and finds struct CommandList and tries to aborts it. Now we have aborted the wrong command. Fix by resetting the scsi_cmd field of struct CommandList upon completion and making the abort handler check that the scsi_cmd pointer in the CommadList struct matches the scsi_cmnd that it has been asked to abort. Reviewed-by: Scott Teel <scott.teel@pmcs.com> Reviewed-by: Kevin Barnett <kevin.barnett@pmcs.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Reviewed-by: Hannes Reinecke <hare@Suse.de> Signed-off-by: Webb Scales <webbnh@hp.com> Signed-off-by: Don Brace <don.brace@pmcs.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: James Bottomley <JBottomley@Odin.com>
* hpsa: add support sending aborts to physical devices via the ioaccel2 pathStephen Cameron2015-05-311-0/+1
| | | | | | | | | | | | | add support for tmf when in ioaccel2 mode Reviewed-by: Scott Teel <scott.teel@pmcs.com> Reviewed-by: Kevin Barnett <kevin.barnett@pmcs.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Reviewed-by: Hannes Reinecke <hare@Suse.de> Signed-off-by: Joe Handzik <joseph.t.handzik@hp.com> Signed-off-by: Don Brace <don.brace@pmcs.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: James Bottomley <JBottomley@Odin.com>
* hpsa: add ioaccel sg chaining for the ioaccel2 pathWebb Scales2015-05-311-0/+1
| | | | | | | | | | | | | | | | | | | Increase the request size for ioaccel2 path. The error, if any, returned by hpsa_allocate_ioaccel2_sg_chain_blocks to hpsa_alloc_ioaccel2_cmd_and_bft should be returned upstream rather than assumed to be -ENOMEM. This differs slightly from hpsa_alloc_ioaccel1_cmd_and_bft, which does not call another hpsa_allocate function and only has -ENOMEM to return from some kmalloc calls. Reviewed-by: Scott Teel <scott.teel@pmcs.com> Reviewed-by: Kevin Barnett <kevin.barnett@pmcs.com> Signed-off-by: Robert Elliott <elliott@hp.com> Signed-off-by: Don Brace <don.brace@pmcs.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: James Bottomley <JBottomley@Odin.com>
* hpsa: use ioaccel2 path to submit IOs to physical drives in HBA mode.Joe Handzik2015-05-311-0/+1
| | | | | | | | | | | | | use ioaccel2 path to submit I/O to physical drives in HBA mode Reviewed-by: Scott Teel <scott.teel@pmcs.com> Reviewed-by: Kevin Barnett <kevin.barnett@pmcs.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Reviewed-by: Hannes Reinecke <hare@Suse.de> Signed-off-by: Joe Handzik <joseph.t.handzik@hp.com> Signed-off-by: Don Brace <don.brace@pmcs.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: James Bottomley <JBottomley@Odin.com>
* hpsa: clean up abortsStephen Cameron2015-05-311-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Do not send aborts to logical devices that do not support aborts Instead of relying on what the Smart Array claims for supporting logical drives, simply try an abort and see how it responds at device discovery time. This way devices that do support aborts (e.g. MSA2000) can work and we do not waste time trying to send aborts to logical drives that do not support them (important for high IOPS devices.) While rescanning devices only test whether devices support aborts the first time we encounter a device rather than every time. Some Smart Arrays required aborts to be sent with tags in the wrong endian byte order. To avoid having to know about this, we would send two aborts with tags with each endian order. On high IOPS devices, this turns out to be not such a hot idea. So we now have a list of the devices that got the tag backwards, and we only send it one way. If all available commands are outstanding and the abort handler is invoked, the abort handler may not be able to allocate a command and may busy-wait excessivly. Reserve a small number of commands for the abort handler and limit the number of concurrent abort requests to the number of reserved commands. Reviewed-by: Scott Teel <scott.teel@pmcs.com> Reviewed-by: Kevin Barnett <kevin.barnett@pmcs.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Reviewed-by: Hannes Reinecke <hare@Suse.de> Signed-off-by: Don Brace <don.brace@pmcs.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: James Bottomley <JBottomley@Odin.com>
* hpsa: add masked physical devices into h->dev[] arrayStephen Cameron2015-05-311-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Cache the ioaccel handle so that when we need to abort commands sent down the ioaccel2 path, we can look up the LUN ID in h->dev[] instead of having to do I/O to the controller. Add a field to elements in h->dev[] to keep track of how the device is exposed to the SCSI mid layer: Not at all, without an upper level driver (no_uld_attach) or normally exposed. Since masked physical devices are now present in h->dev[] array it would be perfectly possible to do echo scsi add-single-device 2 2 0 0 > /proc/scsi/scsi and bring them online. This was previously not allowed for masked physical devices. Ensure that the mapping of physical disks to logical drives gets updated in a consistent way when a RAID migration occurs and is not touched until updates to it are complete. now instead of doing CISS_REPORT_PHYSICAL to get the LUNID for the physical disk in hpsa_get_pdisk_of_ioaccel2(), just get it out of h->dev[] where we already have it cached. do not touch phys_disk[] for ioaccel enabled logical drives during rescan Reviewed-by: Scott Teel <scott.teel@pmcs.com> Reviewed-by: Kevin Barnett <kevin.barnett@pmcs.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Reviewed-by: Hannes Reinecke <hare@Suse.de> Signed-off-by: Don Brace <don.brace@pmcs.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: James Bottomley <JBottomley@Odin.com>
* hpsa: Use local workqueues instead of system workqueuesDon Brace2015-02-021-0/+2
| | | | | | | | Suggested-by: Tomas Henzl <thenzl@redhat.com> Reviewed-by: Webb Scales <webbnh@hp.com> Reviewed-by: Kevin Barnett <Kevin.Barnett@pmcs.com> Signed-off-by: Don Brace <don.brace@pmcs.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
* hpsa: do not use function pointers in fast path command submissionStephen Cameron2015-02-021-4/+1
| | | | | | | | Performance tweak, avoid unnecessary function calls. Reviewed-by: Scott Teel <scott.teel@pmcs.com> Signed-off-by: Don Brace <don.brace@pmcs.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
* hpsa: do not check for msi(x) in interrupt_pendingStephen Cameron2015-02-021-3/+0
| | | | | | | | | | No need to check whether interrupt pending for MSI(X) and conversely, no need to check whether MSI(X) interrupts are being used when checking if interrupts are pending. Reviewed-by: Scott Teel <scott.teel@pmcs.com> Signed-off-by: Don Brace <don.brace@pmcs.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
* hpsa: slightly optimize SA5_performant_completedDon Brace2015-02-021-4/+4
| | | | | | Reviewed-by: Scott Teel <scott.teel@pmcs.com> Signed-off-by: Don Brace <don.brace@pmcs.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
* hpsa: count passthru cmds with atomics, not a spin locked intDon Brace2015-02-021-2/+1
| | | | | | | | Performance enhancement. Remove spin_locks from the driver. Reviewed-by: Scott Teel <scott.teel@pmcs.com> Signed-off-by: Don Brace <don.brace@pmcs.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
* hpsa: optimize cmd_alloc function by remembering last allocationRobert Elliott2015-02-021-0/+1
| | | | | | | | | | | | Empirically, this improves performance slightly (~2% max IOPS) by allowing cmd_alloc to remember where it left off searching for free commands between calls instead of always starting its search at command 0. Reviewed-by: Scott Teel <scott.teel@pmcs.com> Signed-off-by: Robert Elliott <elliott@hp.com> Signed-off-by: Don Brace <don.brace@pmcs.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
* hpsa: fix race between abort handler and main i/o pathWebb Scales2015-02-021-0/+2
| | | | | | | | | | | | | | | | | | | | | This means changing the allocator to reference count commands. The reference count is now the authoritative indicator of whether a command is allocated or not. The h->cmd_pool_bits bitmap is now only a heuristic hint to speed up the allocation process, it is no longer the authoritative record of allocated commands. Since we changed the command allocator to use reference counting as the authoritative indicator of whether a command is allocated, fail_all_outstanding_cmds needs to use the reference count not h->cmd_pool_bits for this purpose. Fix hpsa_drain_accel_commands to use the reference count as the authoritative indicator of whether a command is allocated instead of the h->cmd_pool_bits bitmap. Reviewed-by: Scott Teel <scott.teel@pmcs.com> Signed-off-by: Don Brace <don.brace@pmcs.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
* hpsa: honor queue depth of physical devicesDon Brace2015-02-021-0/+14
| | | | | | | | | | | | | | | | | | | | | | | When using the ioaccel submission methods, requests destined for RAID volumes are sometimes diverted to physical devices. The OS has no or limited knowledge of these physical devices, so it is up to the driver to avoid pushing the device too hard. It is better to honor the physical device queue limit rather than making the device spew zillions of TASK SET FULL responses. This is so that hpsa based devices support /sys/block/sdNN/device/queue_type of simple, which lets the SCSI midlayer automatically adjust the queue_depth based on TASK SET FULL and GOOD status. Adjust the queue depth for a new device after it is created based on the maximum queue depths of the physical devices that constitute the device. This drops the maximum queue depth from .can_queue of 1024 to something like 174 for single-drive RAID-0, 348 for two-drive RAID-1, etc. It also adjusts for the ratio of data to parity drives. Reviewed-by: Scott Teel <scott.teel@pmcs.com> Signed-off-by: Webb Scales <webbnh@hp.com> Signed-off-by: Don Brace <don.brace@pmcs.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
* hpsa: use workqueue to resubmit failed ioaccel commandsDon Brace2015-02-021-0/+1
| | | | | | | | | | | | | Instead of kicking the commands all the way back to the mid layer, use a work queue. This enables having a mechanism for the driver to be able to resubmit the commands down the "normal" raid path without turning off the ioaccel feature entirely whenever an error is encountered on the ioaccel path, and prevent excessive rescanning of devices. Reviewed-by: Scott Teel <scott.teel@pmcs.com> Signed-off-by: Don Brace <don.brace@pmcs.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
* hpsa: do not request device rescan on every ioaccel path errorStephen Cameron2015-02-021-1/+0
| | | | | | | | | | | | | | | | The original reasoning behind doing this was faulty. An error of some sort would be encountered, accelerated i/o would be disabled for that logical drive, the command would be kicked back out to the SCSI midlayer for a retry, and since i/o accelerator mode was disabled, it would get retried down the RAID path. However, something needs to turn ioaccellerator mode back on, and this rescan request was what did that. However, it was racy, and extremely bad for performance to rescan all devices, so, don't do that. Reviewed-by: Scott Teel <scott.teel@pmcs.com> Signed-off-by: Don Brace <don.brace@pmcs.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
* hpsa: do not queue commands internally in driverDon Brace2015-02-021-17/+0
| | | | | | | | | | | | | | | | | | By not doing maintaining a list of queued commands, we can eliminate some spin locking in the main i/o path and gain significant improvement in IOPS. Remove the queuing code and the code that calls it; remove now-unused interrupt code; remove DIRECT_LOOKUP_BIT. Now that the passthru commands share the same command pool as the main i/o path, and the total size of the pool is less than or equal to the number of commands that will fit in the hardware fifo, there is no need to check to see if we are exceeding the hardware fifo's depth. Reviewed-by: Scott Teel <scott.teel@pmcs.com> Reviewed-by: Robert Elliott <elliott@hp.com> Signed-off-by: Don Brace <don.brace@pmcs.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
* hpsa: get rid of cmd_special_alloc and cmd_special_freeStephen Cameron2015-02-021-1/+1
| | | | | | | | | | | | We have commands reserved for internal use. This is laying the groundwork for removing the internal queue of commands from the driver so that the locks that protect that queue may be removed. Reviewed-by: Scott Teel <scott.teel@pmcs.com> Signed-off-by: Don Brace <don.brace@pmcs.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
* hpsa: reserve some commands for use by driverStephen Cameron2015-02-021-0/+2
| | | | | | | | | | | | | | | We need to reserve some commands for device rescans, aborts, and the pass through ioctls, etc. so we cannot give them all to the scsi mid layer. This is in preparation for removing cmd_special_alloc and cmd_special_free so that we can stop queuing commands internally in the driver so that we can remove the locks thta protect the queue that we will no longer have. Reviewed-by: Scott Teel <scott.teel@pmcs.com> Signed-off-by: Don Brace <don.brace@pmcs.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
* hpsa: use atomics for commands_outstandingStephen M. Cameron2014-11-201-20/+7
| | | | | | | | | Use atomics for commands_outstanding instead of protecting with spin locks. Signed-off-by: Don Brace <don.brace@pmcs.com> Signed-off-by: Stephen M. Cameron <stephenmcameron@gmail.com> Reviewed-by: Joe Handzik <joseph.t.handzik@hp.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
* hpsa: Clean up warnings from sparse.Don Brace2014-11-201-3/+3
| | | | | | | | Clean up issues reported when running sparse. Signed-off-by: Don Brace <don.brace@pmcs.com> Reviewed-by: Webb Scales <webb.scales@hp.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
* hpsa: fix event filtering to prevent excessive rescans with old firmwareStephen M. Cameron2014-06-021-3/+1
| | | | | | | | | | | | | CTLR_STATE_CHANGE_EVENT and CTLR_STATE_CHANGE_EVENT_REDUNDANT_CNTRL do not require rescans to be initiated. Current firmware filters out these events already, but some out of date firmware doesn't, so the driver needs to filter them out too. Without this change and with out of date firmware you may see the driver spending a lot of time scanning devices unnecessarily on some Smart Arrays. Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Reviewed-by: Justin Lindley <justin.lindley@hp.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
* hpsa: avoid unnecessary readl on every command submissionStephen M. Cameron2014-06-021-1/+14
| | | | | | | | | for controllers which support either of the ioaccel transport methods. Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Reviewed-by: Mike Miller <michael.miller@canonical.com> Reviewed-by: Joe Handzik <joseph.t.handzik@hp.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
* hpsa: use per-cpu variable for lockup_detectedStephen M. Cameron2014-06-021-1/+1
| | | | | | | | Avoid excessive locking by using per-cpu variable for lockup_detected Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Reviewed-by: Scott Teel <scott.teel@hp.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
* hpsa: allocate reply queues individuallyStephen M. Cameron2014-06-021-7/+6
| | | | | | | | | | | Now that we can allocate more than 4 reply queues (up to 64) we shouldn't try to make them share the same allocation but should allocate them separately. Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Reviewed-by: Mike Miller <michael.miller@canonical.com> Reviewed-by: Scott Teel <scott.teel@hp.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
* hpsa: remove dev_dbg() calls from hot pathsStephen M. Cameron2014-06-021-5/+0
| | | | | | | | | | | They are not completely free of cost when disabled and when enabled emitting debug output for every command submitted produces far too much output to be useful. Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Reviewed-by: Mike Miller <michael.miller@canonical.com> Reviewed-by: Webb Scales <webb.scales@hp.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
* hpsa: remove unused fields from struct ctlr_infoStephen M. Cameron2014-06-021-3/+0
| | | | | | | | | | The fields "major", "max_outstanding", and "usage_count" of struct ctlr_info were not used for anything. Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Reviewed-by: Mike Miller <michael.miller@canonical.com> Reviewed-by: Webb Scales <webb.scales@hp.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
* hpsa: fix memory leak in hpsa_hba_mode_enabledJoe Handzik2014-05-191-0/+1
| | | | | | | | And while we're at it fix a magic number Signed-off-by: Joe Handzik <joseph.t.handzik@hp.com> Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
* [SCSI] hpsa: Add hba mode to the hpsa driverStephen M. Cameron2014-03-151-0/+41
| | | | | | | | | | This allows exposing physical disks behind Smart Array controllers to the OS (if the controller has the right firmware and is in "hba" mode) Signed-off-by: Joe Handzik <joseph.t.handzik@hp.com> Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
* [SCSI] hpsa: bring format-in-progress drives online when readyStephen M. Cameron2014-03-151-0/+9
| | | | | | | | | | | Do not expose drives that are undergoing a format immediately to the OS, instead wait until they are ready before bringing them online. This is so that logical drives created with "rapid parity initialization" do not get immediately kicked off the system for being unresponsive. Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
* [SCSI] hpsa add sysfs debug switch for raid map debugging messagesStephen M. Cameron2014-03-151-0/+1
| | | | | | Signed-off-by: Scott Teel <scott.teel@hp.com> Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-25 07:38:48 +0100