Commit Graph

135 Commits

Author SHA1 Message Date
Dongliang Mu d98e000cc7 scsi: aacraid: Spelling fix in comment
requesed -> requested

Signed-off-by: Dongliang Mu <mudongliangabcd@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-08-08 21:32:43 -04:00
Dave Carroll 7d3af7d96a scsi: aacraid: Correct hba_send to include iu_type
commit b60710ec7d ("scsi: aacraid: enable sending of TMFs from
aac_hba_send()") allows aac_hba_send() to send scsi commands, and TMF
requests, but the existing code only updates the iu_type for scsi
commands. For TMF requests we are sending an unknown iu_type to
firmware, which causes a fault.

Include iu_type prior to determining the validity of the command

Reported-by: Noah Misner <nmisner@us.ibm.com>
Fixes: b60710ec7d ("aacraid: enable sending of TMFs from aac_hba_send()")
Fixes: 423400e64d ("aacraid: Include HBA direct interface")
Tested-by: Noah Misner <nmisner@us.ibm.com>
cc: stable@vger.kernel.org
Signed-off-by: Dave Carroll <david.carroll@microsemi.com>
Reviewed-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Reviewed-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-05-01 23:27:18 -04:00
Dave Carroll 1c6b41fb92 scsi: aacraid: Insure command thread is not recursively stopped
If a recursive IOP_RESET is invoked, usually due to the eh_thread
handling errors after the first reset, be sure we flag that the command
thread has been stopped to avoid an Oops of the form;

 [ 336.620256] CPU: 28 PID: 1193 Comm: scsi_eh_0 Kdump: loaded Not tainted 4.14.0-49.el7a.ppc64le #1
 [ 336.620297] task: c000003fd630b800 task.stack: c000003fd61a4000
 [ 336.620326] NIP: c000000000176794 LR: c00000000013038c CTR: c00000000024bc10
 [ 336.620361] REGS: c000003fd61a7720 TRAP: 0300 Not tainted (4.14.0-49.el7a.ppc64le)
 [ 336.620395] MSR: 9000000000009033 <SF,HV,EE,ME,IR,DR,RI,LE> CR: 22084022 XER: 20040000
 [ 336.620435] CFAR: c000000000130388 DAR: 0000000000000000 DSISR: 40000000 SOFTE: 1
 [ 336.620435] GPR00: c00000000013038c c000003fd61a79a0 c0000000014c7e00 0000000000000000
 [ 336.620435] GPR04: 000000000000000c 000000000000000c 9000000000009033 0000000000000477
 [ 336.620435] GPR08: 0000000000000477 0000000000000000 0000000000000000 c008000010f7d940
 [ 336.620435] GPR12: c00000000024bc10 c000000007a33400 c0000000001708a8 c000003fe3b881d8
 [ 336.620435] GPR16: c000003fe3b88060 c000003fd61a7d10 fffffffffffff000 000000000000001e
 [ 336.620435] GPR20: 0000000000000001 c000000000ebf1a0 0000000000000001 c000003fe3b88000
 [ 336.620435] GPR24: 0000000000000003 0000000000000002 c000003fe3b88840 c000003fe3b887e8
 [ 336.620435] GPR28: c000003fe3b88000 c000003fc8181788 0000000000000000 c000003fc8181700
 [ 336.620750] NIP [c000000000176794] exit_creds+0x34/0x160
 [ 336.620775] LR [c00000000013038c] __put_task_struct+0x8c/0x1f0
 [ 336.620804] Call Trace:
 [ 336.620817] [c000003fd61a79a0] [c000003fe3b88000] 0xc000003fe3b88000 (unreliable)
 [ 336.620853] [c000003fd61a79d0] [c00000000013038c] __put_task_struct+0x8c/0x1f0
 [ 336.620889] [c000003fd61a7a00] [c000000000171418] kthread_stop+0x1e8/0x1f0
 [ 336.620922] [c000003fd61a7a40] [c008000010f7448c] aac_reset_adapter+0x14c/0x8d0 [aacraid]
 [ 336.620959] [c000003fd61a7b00] [c008000010f60174] aac_eh_host_reset+0x84/0x100 [aacraid]
 [ 336.621010] [c000003fd61a7b30] [c000000000864f24] scsi_try_host_reset+0x74/0x180
 [ 336.621046] [c000003fd61a7bb0] [c000000000867ac0] scsi_eh_ready_devs+0xc00/0x14d0
 [ 336.625165] [c000003fd61a7ca0] [c0000000008699e0] scsi_error_handler+0x550/0x730
 [ 336.632101] [c000003fd61a7dc0] [c000000000170a08] kthread+0x168/0x1b0
 [ 336.639031] [c000003fd61a7e30] [c00000000000b528] ret_from_kernel_thread+0x5c/0xb4
 [ 336.645971] Instruction dump:
 [ 336.648743] 384216a0 7c0802a6 fbe1fff8 f8010010 f821ffd1 7c7f1b78 60000000 60000000
 [ 336.657056] 39400000 e87f0838 f95f0838 7c0004ac <7d401828> 314affff 7d40192d 40c2fff4
 [ 336.663997] -[ end trace 4640cf8d4945ad95 ]-

So flag when the thread is stopped by setting the thread pointer to NULL.

Signed-off-by: Dave Carroll <david.carroll@microsemi.com>
Reviewed-by: Raghava Aditya Renukunta <raghavaaditya.renukunta@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-04-09 21:08:30 -04:00
Linus Torvalds 28bc6fb959 SCSI misc on 20180131
This is mostly updates of the usual driver suspects: arcmsr,
 scsi_debug, mpt3sas, lpfc, cxlflash, qla2xxx, aacraid, megaraid_sas,
 hisi_sas.  We also have a rework of the libsas hotplug handling to
 make it more robust, a slew of 32 bit time conversions and fixes, and
 a host of the usual minor updates and style changes.  The biggest
 potential for regressions is the libsas hotplug changes, but so far
 they seem stable under testing.
 
 Signed-off-by: James E.J. Bottomley <jejb@linux.vnet.ibm.com>
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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI updates from James Bottomley:
 "This is mostly updates of the usual driver suspects: arcmsr,
  scsi_debug, mpt3sas, lpfc, cxlflash, qla2xxx, aacraid, megaraid_sas,
  hisi_sas.

  We also have a rework of the libsas hotplug handling to make it more
  robust, a slew of 32 bit time conversions and fixes, and a host of the
  usual minor updates and style changes. The biggest potential for
  regressions is the libsas hotplug changes, but so far they seem stable
  under testing"

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (313 commits)
  scsi: qla2xxx: Fix logo flag for qlt_free_session_done()
  scsi: arcmsr: avoid do_gettimeofday
  scsi: core: Add VENDOR_SPECIFIC sense code definitions
  scsi: qedi: Drop cqe response during connection recovery
  scsi: fas216: fix sense buffer initialization
  scsi: ibmvfc: Remove unneeded semicolons
  scsi: hisi_sas: fix a bug in hisi_sas_dev_gone()
  scsi: hisi_sas: directly attached disk LED feature for v2 hw
  scsi: hisi_sas: devicetree: bindings: add LED feature for v2 hw
  scsi: megaraid_sas: NVMe passthrough command support
  scsi: megaraid: use ktime_get_real for firmware time
  scsi: fnic: use 64-bit timestamps
  scsi: qedf: Fix error return code in __qedf_probe()
  scsi: devinfo: fix format of the device list
  scsi: qla2xxx: Update driver version to 10.00.00.05-k
  scsi: qla2xxx: Add XCB counters to debugfs
  scsi: qla2xxx: Fix queue ID for async abort with Multiqueue
  scsi: qla2xxx: Fix warning for code intentation in __qla24xx_handle_gpdb_event()
  scsi: qla2xxx: Fix warning during port_name debug print
  scsi: qla2xxx: Fix warning in qla2x00_async_iocb_timeout()
  ...
2018-01-31 11:23:28 -08:00
Raghava Aditya Renukunta 75be67cd15 scsi: aacraid: Remove unused rescan variable
Remove unused rescan variable.

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-01-03 23:26:43 -05:00
Raghava Aditya Renukunta fe5237590b scsi: aacraid: Skip schedule rescan in case of kdump
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>
2018-01-03 23:26:43 -05:00
Raghava Aditya Renukunta 8a30e50b72 scsi: aacraid: Fix hang while scanning in eh recovery
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>
2018-01-03 23:26:43 -05:00
Raghava Aditya Renukunta a1367e4ade scsi: aacraid: Reschedule host scan in case of failure
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>
2018-01-03 23:26:43 -05:00
Raghava Aditya Renukunta 8ebaa67fc2 scsi: aacraid: Use hotplug handling function in place of scsi_scan_host
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>
2018-01-03 23:26:43 -05:00
Raghava Aditya Renukunta 3395614e48 scsi: aacraid: Block concurrent hotplug event handling
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>
2018-01-03 23:26:43 -05:00
Raghava Aditya Renukunta 6f44a22b2c scsi: aacraid: Merge adapter setup with resolve luns
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>
2018-01-03 23:26:43 -05:00
Raghava Aditya Renukunta 3031c6565f scsi: aacraid: Refactor resolve luns code and scsi functions
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>
2018-01-03 23:26:43 -05:00
Raghava Aditya Renukunta 2290678fed scsi: aacraid: Added macros to help loop through known buses and targets
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>
2018-01-03 23:26:43 -05:00
Raghava Aditya Renukunta f2d2cabadb scsi: aacraid: Process hba and container hot plug events in single function
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>
2018-01-03 23:26:42 -05:00
Raghava Aditya Renukunta 1d1fec53dc scsi: aacraid: Merge func to get container information
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>
2018-01-03 23:26:42 -05:00
Raghava Aditya Renukunta fc0fdd9abc scsi: aacraid: Add target setup helper function
Add helper function to setup targets devices and create the base for the
upcoming patches

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-01-03 23:26:42 -05:00
Raghava Aditya Renukunta b5a475e944 scsi: aacraid: Refactor and rename to make mirror existing changes
Rename variables and functions to make bmic identify, report phy luns
to make them consistent across code internal existing code bases

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-01-03 23:26:42 -05:00
Raghava Aditya Renukunta 5480aa1837 scsi: aacraid: Change phy luns function to use common bmic function
Edit function that retrieves phy lun information to use common
bmic function

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-01-03 23:26:42 -05:00
Raghava Aditya Renukunta 216ced02fa scsi: aacraid: Move code to wait for IO completion to shutdown func
Ideally driver needs to wait for IO to be submitted or responded to before
shutdown.

Move code to wait for IO completion into shutdown path

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-01-03 23:26:42 -05:00
Raghava Aditya Renukunta 95900629fa scsi: aacraid: Do not remove offlined devices
As part of the recovery process, the drivers removes offline devices (
done by the kernel) and then tries to add them back in the rescan code.
Removing the device is like taking a sledgehammer to a nail.

Set the device as running if it is marked offline.

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-01-03 23:26:41 -05:00
Raghava Aditya Renukunta c5313ae8e4 scsi: aacraid: Fix hang in kdump
Driver attempts to perform a device scan and device add after coming out
of reset. At times when the kdump kernel loads and it tries to perform
eh recovery, the device scan hangs since its commands are blocked because
of the eh recovery. This should have shown up in normal eh recovery path
(Should have been obvious)

Remove the code that performs scanning.I can live without the rescanning
support in the stable kernels but a hanging kdump/eh recovery needs to be
fixed.

Fixes: a2d0321dd5 (scsi: aacraid: Reload offlined drives after controller reset)
Cc: <stable@vger.kernel.org>
Reported-by: Douglas Miller <dougmill@linux.vnet.ibm.com>
Tested-by: Guilherme G. Piccoli <gpiccoli@linux.vnet.ibm.com>
Fixes: a2d0321dd5 (scsi: aacraid: Reload offlined drives after controller reset)
Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-01-03 23:26:41 -05:00
Arnd Bergmann d18539754d scsi: aacraid: address UBSAN warning regression
As reported by Meelis Roos, my previous patch causes an incorrect
calculation of the timeout, through an undefined signed integer
overflow:

[   12.228155] UBSAN: Undefined behaviour in drivers/scsi/aacraid/commsup.c:2514:49
[   12.228229] signed integer overflow:
[   12.228283] 964297611 * 250 cannot be represented in type 'long int'

The problem is that doing a multiplication with HZ first and then
dividing by USEC_PER_SEC worked correctly for 32-bit microseconds,
but not for 32-bit nanoseconds, which would require up to 41 bits.

This reworks the calculation to first convert the nanoseconds into
jiffies, which should give us the same result as before and not overflow.

Unfortunately I did not understand the exact intention of the algorithm,
in particular the part where we add half a second, so it's possible that
there is still a preexisting problem in this function. I added a comment
that this would be handled more nicely using usleep_range(), which
generally works better for waking up at a particular time than the
current schedule_timeout() based implementation. I did not feel
comfortable trying to implement that without being sure what the
intent is here though.

Fixes: 820f188659 ("scsi: aacraid: use timespec64 instead of timeval")
Tested-by: Meelis Roos <mroos@linux.ee>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-11-29 00:07:20 -05:00
Guilherme G. Piccoli e4717292dd scsi: aacraid: Prevent crash in case of free interrupt during scsi EH path
As part of the scsi EH path, aacraid performs a reinitialization of the
adapter, which encompass freeing resources and IRQs, NULLifying lots of
pointers, and then initialize it all over again.  We've identified a
problem during the free IRQ portion of this path if CONFIG_DEBUG_SHIRQ
is enabled on kernel config file.

Happens that, in case this flag was set, right after free_irq()
effectively clears the interrupt, it checks if it was requested as
IRQF_SHARED. In positive case, it performs another call to the IRQ
handler on driver. Problem is: since aacraid currently free some
resources *before* freeing the IRQ, once free_irq() path calls the
handler again (due to CONFIG_DEBUG_SHIRQ), aacraid crashes due to NULL
pointer dereference with the following trace:

  aac_src_intr_message+0xf8/0x740 [aacraid]
  __free_irq+0x33c/0x4a0
  free_irq+0x78/0xb0
  aac_free_irq+0x13c/0x150 [aacraid]
  aac_reset_adapter+0x2e8/0x970 [aacraid]
  aac_eh_reset+0x3a8/0x5d0 [aacraid]
  scsi_try_host_reset+0x74/0x180
  scsi_eh_ready_devs+0xc70/0x1510
  scsi_error_handler+0x624/0xa20

This patch prevents the crash by changing the order of the
deinitialization in this path of aacraid: first we clear the IRQ, then
we free other resources. No functional change intended.

Signed-off-by: Guilherme G. Piccoli <gpiccoli@linux.vnet.ibm.com>
Reviewed-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-11-20 22:33:09 -05:00
Guilherme G. Piccoli bd257b2f3b scsi: aacraid: Check for PCI state of device in a generic way
Commit 16ae9dd35d ("scsi: aacraid: Fix for excessive prints on EEH")
introduced checks about the state of device before any PCI operations in
the driver. Basically, this prevents it to perform PCI accesses when
device is in the process of recover from a PCI error. In PowerPC, such
mechanism is called EEH, and the aforementioned commit introduced checks
that are based on EEH-specific primitives for that.

The potential problems with this approach are three: first, these checks
are "locked" to powerpc only - another archs could have error recovery
methods too, like AER in Intel. Also, the powerpc primitives perform
expensive FW accesses to validate the precise PCI state of a device.
Finally, code becomes more complicated and needs ifdef validation based
on arch config being set.

So, this patch makes use of generic PCI state checks, which are
lightweight and non-dependent of arch configs - also, it makes the code
cleaner.

Fixes: 16ae9dd35d ("scsi: aacraid: Fix for excessive prints on EEH")
Signed-off-by: Guilherme G. Piccoli <gpiccoli@linux.vnet.ibm.com>
Reviewed-by: Dave Carroll <david.carroll@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-11-20 22:29:10 -05:00
Arnd Bergmann 820f188659 scsi: aacraid: use timespec64 instead of timeval
aacraid passes the current time to the firmware in one of two ways,
either as year/month/day/... or as 32-bit unsigned seconds.

The first one is broken on 32-bit architectures as it cannot go past
year 2038. Using timespec64 here makes it behave properly on both 32-bit
and 64-bit architectures, and avoids relying on signed integer overflow
to pass times into the second interface.

The interface used in aac_send_hosttime() however is still problematic
in year 2106 when 32-bit seconds overflow. Hopefully we don't have to
worry about aacraid by that time.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Dave Carroll <david.carroll@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-11-08 18:08:01 -05:00
Hannes Reinecke c323eab7a6 scsi: aacraid: add fib flag to mark scsi command callback
To correctly identify which fib has a scsi command callback this
patch implements a flag FIB_CONTEXT_FLAG_SCSI_CMD.

Signed-off-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Raghava Aditya Renukunta  <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-08-07 14:04:00 -04:00
Hannes Reinecke b60710ec7d scsi: aacraid: enable sending of TMFs from aac_hba_send()
aac_hba_send() will return FAILED for any non-SCSI command requests,
failing any TMFs. This patch updates the check to allow TMFs.

Signed-off-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Raghava Aditya Renukunta  <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-08-07 14:04:00 -04:00
Raghava Aditya Renukunta 395e5df79a scsi: aacraid: Remove reference to Series-9
Remove reference to Series-9 HBA and created arc ctrl check function.

Signed-off-by: Prasad B Munirathnam <prasad.munirathnam@microsemi.com>
Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Reviewed-by: David Carroll <david.carroll@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-06-12 20:48:00 -04:00
Raghava Aditya Renukunta 8c41b9b798 scsi: aacraid: Make sure ioctl returns on controller reset
Made sure that ioctl commands return in case of a controller reset.

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Reviewed-by: Dave Carroll <david.carroll@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-06-12 20:48:00 -04:00
Raghava Aditya Renukunta 9473ddb2b0 scsi: aacraid: Use correct function to get ctrl health
The command thread checks the ctrl health periodically before sending
updates to the controller. The function that it uses is aac_check_health
which does more than get the health status.

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Reviewed-by: David Carroll <david.carroll@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-06-12 20:48:00 -04:00
Raghava Aditya Renukunta fed820073f scsi: aacraid: Remove reset support from check_health
Check health does not need to reset the ctrl but just return the
controller health status.

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Reviewed-by: David Carroll <david.carroll@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-06-12 20:47:59 -04:00
Raghava Aditya Renukunta 8105d39d0e scsi: aacraid: Fix DMAR issues with iommu=pt
The driver changed the DMA consistent map after consistent memory was
allocated, this invalidated the IOMMU identity mapping. The fix was to
make sure that we set the DMA consistent mask setting once depending on
the controller card.

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Reviewed-by: Dave Carroll <david.carroll@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-06-12 20:47:59 -04:00
Linus Torvalds 8d5e72dfdf SCSI misc on 20170503
This update includes the usual round of major driver updates
 (hisi_sas, ufs, fnic, cxlflash, be2iscsi, ipr, stex).  There's also
 the usual amount of cosmetic and spelling stuff.
 
 Signed-off-by: James E.J. Bottomley <jejb@linux.vnet.ibm.com>
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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI updates from James Bottomley:
 "This update includes the usual round of major driver updates
  (hisi_sas, ufs, fnic, cxlflash, be2iscsi, ipr, stex). There's also the
  usual amount of cosmetic and spelling stuff"

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (155 commits)
  scsi: qla4xxx: fix spelling mistake: "Tempalate" -> "Template"
  scsi: stex: make S6flag static
  scsi: mac_esp: fix to pass correct device identity to free_irq()
  scsi: aacraid: pci_alloc_consistent() failures on ARM64
  scsi: ufs: make ufshcd_get_lists_status() register operation obvious
  scsi: ufs: use MASK_EE_STATUS
  scsi: mac_esp: Replace bogus memory barrier with spinlock
  scsi: fcoe: make fcoe_e_d_tov and fcoe_r_a_tov static
  scsi: sd_zbc: Do not write lock zones for reset
  scsi: sd_zbc: Remove superfluous assignments
  scsi: sd: sd_zbc: Rename sd_zbc_setup_write_cmnd
  scsi: Improve scsi_get_sense_info_fld
  scsi: sd: Cleanup sd_done sense data handling
  scsi: sd: Improve sd_completed_bytes
  scsi: sd: Fix function descriptions
  scsi: mpt3sas: remove redundant wmb
  scsi: mpt: Move scsi_remove_host() out of mptscsih_remove_host()
  scsi: sg: reset 'res_in_use' after unlinking reserved array
  scsi: mvumi: remove code handling zero scsi_sg_count(scmd) case
  scsi: fusion: fix spelling mistake: "Persistancy" -> "Persistency"
  ...
2017-05-04 12:19:44 -07:00
Mahesh Rajashekhara f481973d5e scsi: aacraid: pci_alloc_consistent() failures on ARM64
There were pci_alloc_consistent() failures on ARM64 platform.  Use
dma_alloc_coherent() with GFP_KERNEL flag DMA memory allocations.

Signed-off-by: Mahesh Rajashekhara <mahesh.rajashekhara@microsemi.com>
[hch: tweaked indentation, removed memsets]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Dave Carroll <david.carroll@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-04-26 18:28:06 -04:00
Guilherme G. Piccoli 911e572e98 scsi: aacraid: fix PCI error recovery path
During a PCI error recovery, if aac_check_health() is not aware that a
PCI error happened and we have an offline PCI channel, it might trigger
some errors (like NULL pointer dereference) and inhibit the error
recovery process to complete.

This patch makes the health check procedure aware of PCI channel issues,
and in case of error recovery process, the function
aac_adapter_check_health() returns -1 and let the recovery process to
complete successfully. This patch was tested on upstream kernel
v4.11-rc5 in PowerPC ppc64le architecture with adapter 9005:028d
(VID:DID) - the error recovery procedure was able to recover fine.

Fixes: 5c63f7f710 ("aacraid: Added EEH support")
Cc: stable@vger.kernel.org # v4.6+
Signed-off-by: Guilherme G. Piccoli <gpiccoli@linux.vnet.ibm.com>
Reviewed-by: Dave Carroll <david.carroll@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-04-11 20:45:59 -04:00
Raghava Aditya Renukunta e498520ede scsi: aacraid: Fix potential null access
Currently, command threads fails to return ioctls commands for older
controller versions, since it returns when all the fibs have been
allocated. Another issue is even all the fibs have not been allocated,
the correct allocated fibs is not updated nor freed.

Fixes: 113156bcea (scsi: aacraid: Reworked aac_command_thread)
Reported-by: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Reviewed-by: Dave Carroll <david.carroll@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-03-15 19:00:36 -04:00
Colin Ian King fbdab3e7fd scsi: aacraid: remove redundant zero check on ret
The check for ret being zero is redundant as a few statements earlier we
break out of the while loop if ret is non-zero.  Thus we can remove the
zero check and also the dead-code non-zero case too.

Detected by CoverityScan, CID#1411632 ("Logically Dead Code")

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Dave Carroll <david.carroll@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-02-27 22:19:43 -05:00
Raghava Aditya Renukunta a56e574067 scsi: aacraid: Fixed expander hotplug for SMART family
Current driver Hotplug processing code skips over Enclosure channel,
therefore any addition/removal of expander enclosure is not processed.
Additionally device addition code relies on older device type, which
prevents the hotplug of adapter expanders.

Fixed by removing code that skips over Enclosure channels and using the
latest device type for addition or removal or enclosure expanders.

Fixes: 6223a39fe6 (scsi: aacraid: Added support for hotplug)
Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Reviewed-by: Dave Carroll <david.carroll@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-02-23 17:02:15 -05:00
Raghava Aditya Renukunta d844752e18 scsi: aacraid: Fix a potential spinlock double unlock bug
The driver does not unlock the reply  queue spin lock after handling SMART
adapter events. Instead it might attempt to unlock an already unlocked
spin lock.

Fixed by making sure the driver locks the spin lock before freeing it.

Thank you dan for finding this issue out.

Fixes: 6223a39fe6 (scsi: aacraid: Added support for hotplug)
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Reviewed-by: David Carroll <David.Carroll@microsemi.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-02-22 18:41:42 -05:00
Raghava Aditya Renukunta a2d0321dd5 scsi: aacraid: Reload offlined drives after controller reset
During the IOP reset stress testing, it was found that the drives can be
marked offline when the adapter controller crashes and IO's are running
in parallel. When the controller  does come back from the reset, the drive
that is marked offline is not exposed.

Fixed by removing and adding drives that are marked offline. In addition
invoke a scsi host bus rescan to capture any additional configuration
changes.

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Reviewed-by: David Carroll <David.Carroll@microsemi.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-02-22 18:41:42 -05:00
Raghava Aditya Renukunta 849ac6a591 scsi: aacraid: Skip wellness sync on controller failure
aac_command_thread checks on the health of controller periodically,
using aac_check_health. If the status is an error state KERNEL_PANIC or
anything else. The driver will attempt to restart the adapter, but the
response is not checked in aac_command_thread. This allows the periodic
sync to go thru and lead the driver to a hung state.

Fixed by terminating the periodic loop(intended per original design),
if the controller is not restored to a healthy state.

Cc: stable@vger.kernel.org
Fixes: 3d77d84044 (scsi: aacraid: Added support for periodic wellness sync)
Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Reviewed-by: David Carroll <David.Carroll@microsemi.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-02-22 18:41:42 -05:00
Raghava Aditya Renukunta 1bff5abca6 scsi: aacraid: Fix memory leak in fib init path
aac_fib_map_free frees misaligned fib dma memory, additionally it does not
free up the whole memory.

Fixed by changing the  code to free up the correct and full memory
allocation.

Cc: stable@vger.kernel.org
Fixes: e8b12f0fb8 ([SCSI] aacraid: Add new code for PMC-Sierra's SRC based controller family)
Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Reviewed-by: David Carroll <David.Carroll@microsemi.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-02-22 18:41:41 -05:00
Raghava Aditya Renukunta a0c6143e95 scsi: aacraid: Prevent E3 lockup when deleting units
Arrconf management utility at times sends fibs with AdapterProcessed set
in its fibs. This causes the controller to panic and lockup.

Fixed by failing the commands that have AdapterProcessed set in its flag.

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Reviewed-by: David Carroll <David.Carroll@microsemi.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-02-22 18:41:41 -05:00
Raghava Aditya Renukunta 16ae9dd35d scsi: aacraid: Fix for excessive prints on EEH
This issue showed up on a kdump debug(single CPU on powerkvm), when EEH
errors rendered the adapter unusable. The driver correctly detected the
issue and attempted to restart the controller, in doing so the driver
attempted to read the status registers of the controller. This triggered
additional eeh errors which continued for a good 6 minutes.

Fixed by returning without waiting when EEH error is reported.

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Reviewed-by: David Carroll <David.Carroll@microsemi.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-02-22 18:41:41 -05:00
Raghava Aditya Renukunta 1c68856e6e scsi: aacraid: Fix camel case
Replaced camel case with snake case for init supported options.

Suggested-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Reviewed-by: David Carroll <David.Carroll@microsemi.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-02-22 18:41:41 -05:00
Raghava Aditya Renukunta f4babba0af scsi: aacraid: Update copyrights
Added new copyright messages

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Dave Carroll <David.Carroll@microsemi.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-02-03 10:35:04 -05:00
Raghava Aditya Renukunta 3136432956 scsi: aacraid: Added new IWBR reset
Added a new IWBR soft reset type, reworked the IOP reset interface for
a bit.

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Dave Carroll <David.Carroll@microsemi.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-02-03 10:35:04 -05:00
Raghava Aditya Renukunta 423400e64d scsi: aacraid: Include HBA direct interface
Added support to send direct pasthru srb commands from management utilty
to the  controller.

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Dave Carroll <David.Carroll@microsemi.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-02-03 10:35:03 -05:00
Raghava Aditya Renukunta 6223a39fe6 scsi: aacraid: Added support for hotplug
Added support for drive hotplug add and removal

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Dave Carroll <David.Carroll@microsemi.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-02-03 10:35:03 -05:00
Raghava Aditya Renukunta 3d77d84044 scsi: aacraid: Added support for periodic wellness sync
This patch adds a new functions that periodically sync the time of host
to the adapter. In addition also informs the adapter that the driver is
alive and kicking. Only applicable to the HBA1000 and SMARTIOC2000.

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Dave Carroll <David.Carroll@microsemi.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-02-03 10:35:03 -05:00