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path: root/drivers/scsi/hpsa.c
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2013-12-19[SCSI] hpsa: allow SCSI mid layer to handle unit attentionMatt Gates
We were clobbering the SCSI status and setting cmd->result = DID_SOFT_ERROR << 16; to get a retry, but better to let the mid layer handle the unit attention. Signed-off-by: Matt Gates <matthew.gates@hp.com> Acked-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-12-19[SCSI] hpsa: do not require board "not ready" status after hard resetStephen M. Cameron
Immediately following a hard board reset, There are some mandatory delays during which we must not access the board and during which we might miss the "not ready" status, therefore it is a mistake to look for and expect to see the "not ready" status. Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-12-19[SCSI] hpsa: enable unit attention reportingStephen M. Cameron
This used to be the default, but at some point the firmware guys changed the default and I failed to notice. Now to get unit attention notifications, you must twiddle a bit indicating you want them. Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-12-19[SCSI] hpsa: rename scsi prefetch fieldStephen M. Cameron
The field contains more bits than just the one to indicate whether scsi prefetch should be turned on. Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-12-19[SCSI] hpsa: use workqueue instead of kernel thread for lockup detectionStephen M. Cameron
Much simpler and avoids races starting/stopping the thread. Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-12-19[SCSI] hpsa: remove P822se PCI IDMike Miller
Remove PCI ID for the never shipped P822se. Signed-off-by: Mike Miller <mike.miller@hp.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-12-19[SCSI] hpsa: prevent stalled i/oStephen M. Cameron
If a fifo full condition is encountered, i/o requests will stack up in the h->reqQ queue. The only thing which empties this queue is start_io, which only gets called when new i/o requests come in. If none are forthcoming, i/o in h->reqQ will be stalled. To fix this, whenever fifo full condition is encountered, this is recorded, and the interrupt handler examines this to see if a fifo full condition was recently encountered when a command completes and will call start_io to prevent i/o's in h->reqQ from getting stuck. I've only ever seen this problem occur when running specialized test programs that pound on the the CCISS_PASSTHRU ioctl. Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-12-19[SCSI] hpsa: cap CCISS_PASSTHRU at 20 concurrent commands.Stephen M. Cameron
Cap CCISS_BIG_PASSTHRU as well. If an attempt is made to exceed this, ioctl() will return -1 with errno == EAGAIN. This is to prevent a userland program from exhausting all of pci_alloc_consistent memory. I've only seen this problem when running a special test program designed to provoke it. 20 concurrent commands via the passthru ioctls (not counting SG_IO) should be more than enough. Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-12-16[SCSI] hpsa: add MSA 2040 to list of external target devicesStephen M. Cameron
Signed-off-by: Scott Teel <scott.teel@hp.com> Acked-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-12-16[SCSI] hpsa: fix memory leak in CCISS_BIG_PASSTHRU ioctlStephen M. Cameron
We were leaking a command buffer if a DMA mapping error was encountered in the CCISS_BIG_PASSTHRU ioctl. Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-12-16[SCSI] hpsa: remove unneeded include of seq_file.hStephen M. Cameron
Signed-off-by: Scott Teel <scott.teel@hp.com> Acked-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-12-16[SCSI] hpsa: add 5 second delay after doorbell resetStephen M. Cameron
The hardware guys tell us that after initiating a software reset via the doorbell register we need to wait 5 seconds before attempting to talk to the board *at all*. This means that we cannot watch the board to verify it transitions from "ready" to to "not ready" then back "ready", since this transition will most likely happen during those 5 seconds (though we can still verify the reset happens by watching the "driver version" field get cleared.) Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-12-16[SCSI] hpsa: do not attempt to flush the cache on locked up controllersStephen M. Cameron
There's no point in trying since it can't work, and if you do try, it will just hang the system on shutdown. Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-11-30[SCSI] hpsa: return 0 from driver probe function on success, not 1Stephen M. Cameron
A return value of 1 is interpreted as an error. See pci_driver. in local_pci_probe(). If you're wondering how this ever could have worked, it's because it used to be the case that only return values less than zero were interpreted as failure. But even in the current kernel if the driver registers its various entry points with the kernel, and then returns a value which is interpreted as failure, those registrations aren't undone, so the driver still mostly works. However, the driver's remove function wouldn't be called on rmmod, and pci power management functions wouldn't work. In the case of Smart Array, since it has a battery backed cache (or else no cache) even if the driver is not shut down properly as long as there is no outstanding i/o, nothing too bad happens, which is why it took so long to notice. Requesting backport to stable because the change to pci-driver.c which requires driver probe functions to return 0 occurred between 2.6.35 and 2.6.36 (the pci power management breakage) and again between 3.7 and 3.8 (pci_dev->driver getting set to NULL in local_pci_probe() preventing driver remove function from being called on rmmod.) Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Cc: stable@vger.kernel.org Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-11-30[SCSI] hpsa: do not discard scsi status on aborted commandsStephen M. Cameron
We inadvertantly discarded the scsi status for aborted commands. For some commands (e.g. reads from tape drives) these can't be retried, and if we discarded the scsi status, the scsi mid layer couldn't notice anything was wrong and the error was not reported. Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Cc: stable@vger.kernel.org Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-11-29[SCSI] Disable WRITE SAME for RAID and virtual host adapter driversMartin K. Petersen
Some host adapters do not pass commands through to the target disk directly. Instead they provide an emulated target which may or may not accurately report its capabilities. In some cases the physical device characteristics are reported even when the host adapter is processing commands on the device's behalf. This can lead to adapter firmware hangs or excessive I/O errors. This patch disables WRITE SAME for devices connected to host adapters that provide an emulated target. Driver writers can disable WRITE SAME by setting the no_write_same flag in the host adapter template. [jejb: fix up rejections due to eh_deadline patch] Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Cc: stable@kernel.org Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-11-15Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial Pull trivial tree updates from Jiri Kosina: "Usual earth-shaking, news-breaking, rocket science pile from trivial.git" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (23 commits) doc: usb: Fix typo in Documentation/usb/gadget_configs.txt doc: add missing files to timers/00-INDEX timekeeping: Fix some trivial typos in comments mm: Fix some trivial typos in comments irq: Fix some trivial typos in comments NUMA: fix typos in Kconfig help text mm: update 00-INDEX doc: Documentation/DMA-attributes.txt fix typo DRM: comment: `halve' -> `half' Docs: Kconfig: `devlopers' -> `developers' doc: typo on word accounting in kprobes.c in mutliple architectures treewide: fix "usefull" typo treewide: fix "distingush" typo mm/Kconfig: Grammar s/an/a/ kexec: Typo s/the/then/ Documentation/kvm: Update cpuid documentation for steal time and pv eoi treewide: Fix common typo in "identify" __page_to_pfn: Fix typo in comment Correct some typos for word frequency clk: fixed-factor: Fix a trivial typo ...
2013-10-25[SCSI] hpsa: remove unused Smart Array IDMike Miller
This patch removes the PCI ID of a cancelled Smart Array. Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-10-14SCSI: remove unnecessary pci_set_drvdata()Jingoo Han
Since commit 0998d0631001288a5974afc0b2a5f568bcdecb4d (device-core: Ensure drvdata = NULL when no driver is bound), the driver core clears the driver data to NULL after device_release or on probe failure. Thus, it is not needed to manually clear the device driver data to NULL. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Cc: James Bottomley <JBottomley@parallels.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2013-09-15Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsiLinus Torvalds
Pull misc SCSI driver updates from James Bottomley: "This patch set is a set of driver updates (megaraid_sas, fnic, lpfc, ufs, hpsa) we also have a couple of bug fixes (sd out of bounds and ibmvfc error handling) and the first round of esas2r checker fixes and finally the much anticipated big endian additions for megaraid_sas" * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (47 commits) [SCSI] fnic: fnic Driver Tuneables Exposed through CLI [SCSI] fnic: Kernel panic while running sh/nosh with max lun cfg [SCSI] fnic: Hitting BUG_ON(io_req->abts_done) in fnic_rport_exch_reset [SCSI] fnic: Remove QUEUE_FULL handling code [SCSI] fnic: On system with >1.1TB RAM, VIC fails multipath after boot up [SCSI] fnic: FC stat param seconds_since_last_reset not getting updated [SCSI] sd: Fix potential out-of-bounds access [SCSI] lpfc 8.3.42: Update lpfc version to driver version 8.3.42 [SCSI] lpfc 8.3.42: Fixed issue of task management commands having a fixed timeout [SCSI] lpfc 8.3.42: Fixed inconsistent spin lock usage. [SCSI] lpfc 8.3.42: Fix driver's abort loop functionality to skip IOs already getting aborted [SCSI] lpfc 8.3.42: Fixed failure to allocate SCSI buffer on PPC64 platform for SLI4 devices [SCSI] lpfc 8.3.42: Fix WARN_ON when driver unloads [SCSI] lpfc 8.3.42: Avoided making pci bar ioremap call during dual-chute WQ/RQ pci bar selection [SCSI] lpfc 8.3.42: Fixed driver iocbq structure's iocb_flag field running out of space [SCSI] lpfc 8.3.42: Fix crash on driver load due to cpu affinity logic [SCSI] lpfc 8.3.42: Fixed logging format of setting driver sysfs attributes hard to interpret [SCSI] lpfc 8.3.42: Fixed back to back RSCNs discovery failure. [SCSI] lpfc 8.3.42: Fixed race condition between BSG I/O dispatch and timeout handling [SCSI] lpfc 8.3.42: Fixed function mode field defined too small for not recognizing dual-chute mode ...
2013-09-10[SCSI] hpsa: bump driver version to reflect changesMike Miller
Changes the version of hpsa so we know something has changed. Please consider this for inclusion. Signed-off-by: Mike Miller <mike.miller@hp.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-09-10[SCSI] hpsa: housekeeping patch for device_id and product arraysMike Miller
This patch does a bit of housekeeping for hpsa. Change lowercase alpha hex digits to uppercase for consistency within the driver. Also moves the P822se in the tables to keep controllers of each family grouped together. Signed-off-by: Mike Miller <mike.miller@hp.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-09-10[SCSI] hpsa: add HP Smart Array Gen8 namesMike Miller
Add the marketing names for HP Smart Array Gen8 controllers. Also removes an unused ID. Please consider this for inclusion. Signed-off-by: Mike Miller <mike.miller@hp.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-09-10[SCSI] hpsa: add HP Smart Array Gen9 PCI ID'sMike Miller
This patch adds the PCI ID's for HP Smart Array Gen9 controllers. Please consider this patch for inclusion. Signed-off-by: Mike Miller <mike.miller@hp.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-09-06Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial Pull trivial tree from Jiri Kosina: "The usual trivial updates all over the tree -- mostly typo fixes and documentation updates" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (52 commits) doc: Documentation/cputopology.txt fix typo treewide: Convert retrun typos to return Fix comment typo for init_cma_reserved_pageblock Documentation/trace: Correcting and extending tracepoint documentation mm/hotplug: fix a typo in Documentation/memory-hotplug.txt power: Documentation: Update s2ram link doc: fix a typo in Documentation/00-INDEX Documentation/printk-formats.txt: No casts needed for u64/s64 doc: Fix typo "is is" in Documentations treewide: Fix printks with 0x%# zram: doc fixes Documentation/kmemcheck: update kmemcheck documentation doc: documentation/hwspinlock.txt fix typo PM / Hibernate: add section for resume options doc: filesystems : Fix typo in Documentations/filesystems scsi/megaraid fixed several typos in comments ppc: init_32: Fix error typo "CONFIG_START_KERNEL" treewide: Add __GFP_NOWARN to k.alloc calls with v.alloc fallbacks page_isolation: Fix a comment typo in test_pages_isolated() doc: fix a typo about irq affinity ...
2013-09-04treewide: Convert retrun typos to returnJoe Perches
Tyops should be fixed. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2013-08-26[SCSI] hpsa: fix warning with smp_processor_id() in preemptibleJohn Kacur
section Signed-off-by: John Kacur <jkacur@redhat.com> On a 3.6-rt (real-time patch) kernel we are seeing the following BUG However, it appears to be relevant for non-realtime (mainline) as well. [ 49.688847] hpsa 0000:03:00.0: hpsa0: <0x323a> at IRQ 67 using DAC [ 49.749928] scsi0 : hpsa [ 49.784437] BUG: using smp_processor_id() in preemptible [00000000 00000000] code: kworker/u:0/6 [ 49.784465] caller is enqueue_cmd_and_start_io+0x5a/0x100 [hpsa] [ 49.784468] Pid: 6, comm: kworker/u:0 Not tainted 3.6.11.5-rt37.52.el6rt.x86_64.debug #1 [ 49.784471] Call Trace: [ 49.784512] [<ffffffff812abe83>] debug_smp_processor_id+0x123/0x150 [ 49.784520] [<ffffffffa009043a>] enqueue_cmd_and_start_io+0x5a/0x100 [hpsa] [ 49.784529] [<ffffffffa00905cb>] hpsa_scsi_do_simple_cmd_core+0xeb/0x110 [hpsa] [ 49.784537] [<ffffffff812b09c8>] ? swiotlb_dma_mapping_error+0x18/0x30 [ 49.784544] [<ffffffff812b09c8>] ? swiotlb_dma_mapping_error+0x18/0x30 [ 49.784553] [<ffffffffa0090701>] hpsa_scsi_do_simple_cmd_with_retry+0x91/0x280 [hpsa] [ 49.784562] [<ffffffffa0093558>] hpsa_scsi_do_report_luns.clone.2+0xd8/0x130 [hpsa] [ 49.784571] [<ffffffffa00935ea>] hpsa_gather_lun_info.clone.3+0x3a/0x1a0 [hpsa] [ 49.784580] [<ffffffffa00963df>] hpsa_update_scsi_devices+0x11f/0x4f0 [hpsa] [ 49.784592] [<ffffffff81592019>] ? sub_preempt_count+0xa9/0xe0 [ 49.784601] [<ffffffffa00968ad>] hpsa_scan_start+0xfd/0x150 [hpsa] [ 49.784613] [<ffffffff8158cba8>] ? rt_spin_lock_slowunlock+0x78/0x90 [ 49.784626] [<ffffffff813b04d7>] do_scsi_scan_host+0x37/0xa0 [ 49.784632] [<ffffffff813b05da>] do_scan_async+0x1a/0x30 [ 49.784643] [<ffffffff8107c4ab>] async_run_entry_fn+0x9b/0x1d0 [ 49.784655] [<ffffffff8106ae92>] process_one_work+0x1f2/0x620 [ 49.784661] [<ffffffff8106ae20>] ? process_one_work+0x180/0x620 [ 49.784668] [<ffffffff8106d4fe>] ? worker_thread+0x5e/0x3a0 [ 49.784674] [<ffffffff8107c410>] ? async_schedule+0x20/0x20 [ 49.784681] [<ffffffff8106d5d3>] worker_thread+0x133/0x3a0 [ 49.784688] [<ffffffff8106d4a0>] ? manage_workers+0x190/0x190 [ 49.784696] [<ffffffff81073236>] kthread+0xa6/0xb0 [ 49.784707] [<ffffffff815970a4>] kernel_thread_helper+0x4/0x10 [ 49.784715] [<ffffffff81082a7c>] ? finish_task_switch+0x8c/0x110 [ 49.784721] [<ffffffff8158e44b>] ? _raw_spin_unlock_irq+0x3b/0x70 [ 49.784727] [<ffffffff8158e85d>] ? retint_restore_args+0xe/0xe [ 49.784734] [<ffffffff81073190>] ? kthreadd+0x1e0/0x1e0 [ 49.784739] [<ffffffff815970a0>] ? gs_change+0xb/0xb ------------------- This is caused by enqueue_cmd_and_start_io()-> set_performant_mode()-> smp_processor_id() Which if you have debugging enabled calls debug_processor_id() and triggers the warning. The code here is c->Header.ReplyQueue = smp_processor_id() % h->nreply_queues; Since it is not critical that the code complete on the same processor, but the cpu is a hint used in generating the ReplyQueue and will still work if the cpu migrates or is preempted, it is safe to use the raw_smp_processor_id() to surpress the false positve warning. Signed-off-by: John Kacur <jkacur@redhat.com> Acked-by: Stephen Cameron <scameron@beardog.cce.hp.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-08-26[SCSI] hpsa: remove unneeded variableTomas Henzl
Signed-off-by: Tomas Henzl <thenzl@redhat.com> Acked-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-08-26[SCSI] hpsa: fix a race in cmd_free/scsi_doneTomas Henzl
When the driver calls scsi_done and after that frees it's internal preallocated memory it can happen that a new job is enqueud before the memory is freed. The allocation fails and the message "cmd_alloc returned NULL" is shown. Patch below fixes it by moving cmd->scsi_done after cmd_free. Signed-off-by: Tomas Henzl <thenzl@redhat.com> Acked-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-02-24[SCSI] hpsa: check for dma_mapping_error in hpsa_passthru ioctlsStephen M. Cameron
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-02-24[SCSI] hpsa: reorganize error handling in hpsa_passthru_ioctlStephen M. Cameron
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-02-24[SCSI] hpsa: check for dma_mapping_error in hpsa_map_sg_chain_blockStephen M. Cameron
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-02-24[SCSI] hpsa: Check for dma_mapping_error for all code paths using fill_cmdStephen M. Cameron
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-02-24[SCSI] hpsa: Check for dma_mapping_error in hpsa_map_oneShuah Khan
Signed-off-by: Shuah Khan <shuah.khan@hp.com> Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-01-03Drivers: scsi: remove __dev* attributes.Greg Kroah-Hartman
CONFIG_HOTPLUG is going away as an option. As a result, the __dev* markings need to be removed. This change removes the use of __devinit, __devexit_p, __devinitdata, __devinitconst, and __devexit from these drivers. Based on patches originally written by Bill Pemberton, but redone by me in order to handle some of the coding style issues better, by hand. Cc: Bill Pemberton <wfp5p@virginia.edu> Cc: Adam Radford <linuxraid@lsi.com> Cc: "James E.J. Bottomley" <JBottomley@parallels.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-10-02Merge tag 'scsi-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi Pull first round of SCSI updates from James Bottomley: "This is a large set of updates, mostly for drivers (qla2xxx [including support for new 83xx based card], qla4xxx, mpt2sas, bfa, zfcp, hpsa, be2iscsi, isci, lpfc, ipr, ibmvfc, ibmvscsi, megaraid_sas). There's also a rework for tape adding virtually unlimited numbers of tape drives plus a set of dif fixes for sd and a fix for a live lock on hot remove of SCSI devices. This round includes a signed tag pull of isci-for-3.6 Signed-off-by: James Bottomley <JBottomley@Parallels.com>" Fix up trivial conflict in drivers/scsi/qla2xxx/qla_nx.c due to new PCI helper function use in a function that was removed by this pull. * tag 'scsi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (198 commits) [SCSI] st: remove st_mutex [SCSI] sd: Ensure we correctly disable devices with unknown protection type [SCSI] hpsa: gen8plus Smart Array IDs [SCSI] qla4xxx: Update driver version to 5.03.00-k1 [SCSI] qla4xxx: Disable generating pause frames for ISP83XX [SCSI] qla4xxx: Fix double clearing of risc_intr for ISP83XX [SCSI] qla4xxx: IDC implementation for Loopback [SCSI] qla4xxx: update copyrights in LICENSE.qla4xxx [SCSI] qla4xxx: Fix panic while rmmod [SCSI] qla4xxx: Fail probe_adapter if IRQ allocation fails [SCSI] qla4xxx: Prevent MSI/MSI-X falling back to INTx for ISP82XX [SCSI] qla4xxx: Update idc reg in case of PCI AER [SCSI] qla4xxx: Fix double IDC locking in qla4_8xxx_error_recovery [SCSI] qla4xxx: Clear interrupt while unloading driver for ISP83XX [SCSI] qla4xxx: Print correct IDC version [SCSI] qla4xxx: Added new mbox cmd to pass driver version to FW [SCSI] scsi_dh_alua: Enable STPG for unavailable ports [SCSI] scsi_remove_target: fix softlockup regression on hot remove [SCSI] ibmvscsi: Fix host config length field overflow [SCSI] ibmvscsi: Remove backend abstraction ...
2012-09-24[SCSI] hpsa: gen8plus Smart Array IDsMike Miller
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-09-18[SCSI] hpsa: fix handling of protocol errorStephen M. Cameron
If a command status of CMD_PROTOCOL_ERR is received, this information should be conveyed to the SCSI mid layer, not dropped on the floor. CMD_PROTOCOL_ERR may be received from the Smart Array for any commands destined for an external RAID controller such as a P2000, or commands destined for tape drives or CD/DVD-ROM drives, if for instance a cable is disconnected. This mostly affects multipath configurations, as disconnecting a cable on a non-multipath configuration is not going to do anything good regardless of whether CMD_PROTOCOL_ERR is handled correctly or not. Not handling CMD_PROTOCOL_ERR correctly in a multipath configaration involving external RAID controllers may cause data corruption, so this is quite a serious bug. This bug should not normally cause a problem for direct attached disk storage. Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Cc: stable@vger.kernel.org Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-09-14[SCSI] hpsa: use ioremap_nocache instead of ioremapStephen M. Cameron
I think ioremap() ends up being equivalent to ioremap_nocache by default, but we should signal our intent that these mappings should be non-cacheable. Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-09-14[SCSI] hpsa: fix incorrect abort diagnostic messageStephen M. Cameron
In the abort handler, when asked to abort a command which is not known to the driver, SUCCESS is returned, but the diagnostic message incorrectly indicates the abort failed. Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-09-14[SCSI] hpsa: Use LUN reset instead of target resetStephen M. Cameron
It turns out Smart Array logical drives do not support target reset and when the target reset fails, the logical drive will be taken off line. Symptoms look like this: hpsa 0000:03:00.0: Abort request on C1:B0:T0:L0 hpsa 0000:03:00.0: resetting device 1:0:0:0 hpsa 0000:03:00.0: cp ffff880037c56000 is reported invalid (probably means target device no longer present) hpsa 0000:03:00.0: resetting device failed. sd 1:0:0:0: Device offlined - not ready after error recovery sd 1:0:0:0: rejecting I/O to offline device EXT3-fs error (device sdb1): read_block_bitmap: LUN reset is supported though, and is what we should be using. Target reset is also disruptive in shared SAS situations, for example, an external MSA1210m which does support target reset attached to Smart Arrays in multiple hosts -- a target reset from one host is disruptive to other hosts as all LUNs on the target will be reset and will abort all outstanding i/os back to all the attached hosts. So we should use LUN reset, not target reset. Tested this with Smart Array logical drives and with tape drives. Not sure how this bug survived since 2009, except it must be very rare for a Smart Array to require more than 30s to complete a request. Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Cc: stable@vger.kernel.org Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-05-10[SCSI] hpsa: dial down lockup detection during firmware flashStephen M. Cameron
Dial back the aggressiveness of the controller lockup detection thread. Currently it will declare the controller to be locked up if it goes for 10 seconds with no interrupts and no change in the heartbeat register. Dial back this to 30 seconds with no heartbeat change, and also snoop the ioctl path and if a firmware flash command is detected, dial it back further to 4 minutes until the firmware flash command completes. The reason for this is that during the firmware flash operation, the controller apparently doesn't update the heartbeat register as frequently as it is supposed to, and we can get a false positive. Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-05-10[SCSI] hpsa: add new RAID level "1(ADM)"Mike Miller
Signed-off-by: Mike Miller <mikem@beardog.cce.hp.com> Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-05-10[SCSI] hpsa: factor out hpsa_free_irqs_and_disable_msixStephen M. Cameron
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-05-10[SCSI] hpsa: refine interrupt handler locking for greater concurrencyMatt Gates
Use spinlocks with finer granularity in the submission and completion paths to allow concurrent execution for multiple reply queues. In particular, do not hold a spin lock while submitting a request to the device, nor during most of the interrupt handler. Signed-off-by: Matt Gates <matthew.gates@hp.com> Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-05-10[SCSI] hpsa: use multiple reply queuesMatt Gates
Smart Arrays can support multiple reply queues onto which command completions may be deposited. It can help performance quite a bit to arrange for command completions to be processed on the same CPU from which they were submitted to increase the likelihood of cache hits. Signed-off-by: Matt Gates <matthew.gates@hp.com> Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-05-10[SCSI] hpsa: factor out tail calls to next_command() in ↵Stephen M. Cameron
process_(non)indexed_cmd() This is in order to smooth the way for upcoming changes to allow use of multiple reply queues for command completions. Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: Matt Gates <matthew.gates@hp.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-05-10[SCSI] hpsa: do aborts two waysStephen M. Cameron
When aborting a command, the tag is supposed to be specified as 64-bit little endian. However, some smart arrays expect the tag of the command to be aborted to be specified in a strange byte order. How to tell which sort of Smart Array firmware we're dealing with is not obvious. However, because of the way we construct our tags, the values of any outstanding tag when specified with the "strange" byte order will not collide with the value specified in the correct order. That means we can safely attempt the abort both ways. Signed-off-by: Stephen M. Cameron <stephenmcameron@gmail.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-05-10[SCSI] hpsa: add abort error handler functionStephen M. Cameron
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-05-10[SCSI] hpsa: remove unused parameter from finish_cmdStephen M. Cameron
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>