Commit Graph

10087 Commits

Author SHA1 Message Date
Armen Baloyan e601d778d5 [SCSI] qla2xxx: Perform warm reset every 2 minutes if firmware load fails for ISPFX00.
Signed-off-by: Armen Baloyan <armen.baloyan@qlogic.com>
Acked-by: Srinivasa Rao <srinivasa.rao@qlogic.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-09-03 07:28:01 -07:00
Armen Baloyan b6511d9976 [SCSI] qla2xxx: Set factory reset recovery timeout to 10 min. for ISPFX00.
Signed-off-by: Armen Baloyan <armen.baloyan@qlogic.com>
Acked-by: Srinivasa Rao <srinivasa.rao@qlogic.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-09-03 07:28:01 -07:00
Andrew Vasquez da9b1d5cb9 [SCSI] qla2xxx: Correct multiqueue offset calculations.
Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-09-03 07:28:01 -07:00
Joe Carnuccio e8b8b8ad6e [SCSI] qla2xxx: Fix incorrect test after list_for_each_entry() exits.
list_for_each_entry() never leaves the iterator pointing to null.

Signed-off-by: Joe Carnuccio <joe.carnuccio@qlogic.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-09-03 07:28:00 -07:00
Atul Deshmukh 7ec0effd30 [SCSI] qla2xxx: Add support for ISP8044.
[jejb: checkpatch fixes]
Signed-off-by: Atul Deshmukh <atul.deshmukh@qlogic.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-09-03 07:28:00 -07:00
Oleksandr Khoshaba 7b83355890 [SCSI] qla2xxx: Print some variables to hexadecimal string via %*phN format
The patch changes a specifier used to output some variables. Instead of using
stack for each byte the '%*ph[CN]' allows to take a one pointer and prints
entire buffer as a hexadecimal string with the separator ':' or ''.

Signed-off-by: Oleksandr Khoshaba <Oleksandr.Khoshaba@gmail.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-09-03 07:27:59 -07:00
Jan Vesely 963ba22b90 [SCSI] mpt3sas: Remove phys on topology change
Signed-off-by: Jan Vesely <jvesely@redhat.com>
Acked-by: Sreekanth Reddy <Sreekanth.Reddy@lsi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-09-03 07:27:59 -07:00
Jan Vesely 3520f9c779 [SCSI] mpt2sas: Remove phys on topology change.
Signed-off-by: Jan Vesely <jvesely@redhat.com>
Acked-by: Sreekanth Reddy <Sreekanth.Reddy@lsi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-09-03 07:27:58 -07:00
Rasesh Mody 71b3ba7dbf [SCSI] bfa: firmware update to 3.2.1.1
This patch updates the firmware to address the thermal notification issue

Signed-off-by: Rasesh Mody <rmody@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-09-03 07:27:58 -07:00
Bradley Grove 26780d9e12 [SCSI] esas2r: ATTO Technology ExpressSAS 6G SAS/SATA RAID Adapter Driver
This is a new driver for ATTO Technology's ExpressSAS series of hardware RAID
adapters.  It supports the following adapters:

    - ExpressSAS R60F
    - ExpressSAS R680
    - ExpressSAS R608
    - ExpressSAS R644

Signed-off-by: Bradley Grove <bgrove@attotech.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-09-03 07:27:58 -07:00
Dan Carpenter 127be35528 [SCSI] eata_pio: off by one in eata_pio_detect()
Smatch complains that the reg_IRQ[] array only has MAXIRQ (16) elements
so we are one space beyond the end of the array here.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-09-03 07:27:58 -07:00
Vikas Chaudhary 272fd3b28f [SCSI] qla4xxx: Update driver version to 5.04.00-k1
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-09-03 07:27:57 -07:00
Vikas Chaudhary 35a9c2ab39 [SCSI] qla4xxx: Return error if minidump data collection fails
Return error from function qla4_8xxx_collect_md_data()
if minidump data collection fails.

Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-09-03 07:27:57 -07:00
Santosh Vernekar 4812d070f3 [SCSI] qla4xxx: Fix the minidump data collection check in for loop
Signed-off-by: Santosh Vernekar <santosh.vernekar@qlogic.com>
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-09-03 07:27:57 -07:00
Santosh Vernekar 41f79bde1d [SCSI] qla4xxx: Add pex-dma support for capturing minidump
Add pex-dma support for ISP8324 and ISP8042 to improve
the minidump capture time.

Signed-off-by: Santosh Vernekar <santosh.vernekar@qlogic.com>
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-09-03 07:27:56 -07:00
Sreekanth Reddy 9c5000606d [SCSI] mpt3sas: Added a driver module parameter max_msix_vectors
Added a driver module parameter max_msix_vectors. Using this module parameter
the maximum number of MSI-X vectors could be set.

The number of MSI-X vectors used would be the minimum of MSI-X vectors
supported by the HBA, the number of CPU cores and the value set to
max_msix_vectors module parameter.

The default value of this module parameter is set to 8. The default value of
this parameter is set to 8 inorder to reduce the amount of memory required for
Reply Descriptor Post queue.  This is because with the higher MSI-X vectors,
some times kernel is not able to allocate the requested amount of memory and
crash is observed. To overcome this problem, the default value is set to 8.

Signed-off-by: Sreekanth Reddy <Sreekanth.Reddy@lsi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-09-03 07:27:55 -07:00
Vikas Chaudhary a9623da05f [SCSI] qla4xxx: Update driver version to 5.04.00-k0
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-09-03 07:27:54 -07:00
Vikas Chaudhary 4a4f51e9b6 [SCSI] qla4xxx: Update Copyright header
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-09-03 07:27:54 -07:00
Nilesh Javali 7ab284c9fb [SCSI] qla4xxx: Implementation of ACB configuration during Loopback for ISP8042
While loopback diagnostic is in progress, disable the ACB which resets
all the active connections to target. Disable ACB would filter out all
the DHCP multicast and broadcast packets which otherwise cause the
diagnostic test to take longer time to complete or failures in some
other cases.

Signed-off-by: Nilesh Javali <nilesh.javali@qlogic.com>
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-09-03 07:27:54 -07:00
Vikas Chaudhary b37ca4183c [SCSI] qla4xxx: Added support for ISP8042
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-09-03 07:27:53 -07:00
Sreekanth Reddy 4d81233c7c [SCSI] mpt2sas: Bump driver version to v16.100.00.00
Signed-off-by: Sreekanth Reddy <Sreekanth.Reddy@lsi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-09-03 07:27:53 -07:00
Sreekanth Reddy 63e359d421 [SCSI] mpt2sas: Fix for kernel panic when driver loads with HBA connected to non LUN 0 configured expander
With some enclosures when LUN 0 is not created but LUN 1 or LUN X is created
then SCSI scan procedure calls target_alloc, slave_alloc call back functions
for LUN 0 and slave_destory() for same LUN 0.

In these kind of cases within slave_destroy, pointer to scsi_target in
_sas_device structure is set to NULL, following which when slave_alloc for
LUN 1 is called then starget would not be set properly for this LUN.
So, scsi_target pointer pointing to NULL value would lead to a crash later
in the discovery procedure.

To solve this issue set the sas_device's scsi_target pointer to scsi_device's
scsi_target if it is NULL earlier in slave_alloc callback function.

Signed-off-by: Sreekanth Reddy <Sreekanth.Reddy@lsi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-09-03 07:27:52 -07:00
Sreekanth Reddy bc6d4c3b78 [SCSI] mpt2sas: when Async scanning is enabled then while scanning, devices are removed but their transport layer entries are not removed
When Async scanning mode is enabled and device scanning is in progress then
devices should not be removed. But in actuality, devices are removed but
their transport layer entries are not removed. This causes error to add
the same device to the transport layer after host reset or diagnostic
reset.

So, in this patch, modified the code in such a way that device is not removed
when Async scanning mode is enabled and device scanning is in progress.

Signed-off-by: Sreekanth Reddy <Sreekanth.Reddy@lsi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-09-03 07:27:52 -07:00
Sreekanth Reddy 1c50e8d26e [SCSI] mpt2sas: Infinite loop can occur if MPI2_IOCSTATUS_CONFIG_INVALID_PAGE is not returned
Infinite loop can occur if IOCStatus is not equal to
MPI2_IOCSTATUS_CONFIG_INVALID_PAGE value in the while loops in functions
_scsih_search_responding_sas_devices,
_scsih_search_responding_raid_devices and
_scsih_search_responding_expanders

So, Instead of checking for MPI2_IOCSTATUS_CONFIG_INVALID_PAGE value,
in this patch code is modified to check for IOCStatus not equals to
MPI2_IOCSTATUS_SUCCESS to break the while loop.

Signed-off-by: Sreekanth Reddy <Sreekanth.Reddy@lsi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-09-03 07:27:52 -07:00
Sreekanth Reddy d648d5a9a8 [SCSI] mpt2sas: The copyright in driver sources is updated for the year 2013
The copyright in driver sources is updated for the year 2013.

Signed-off-by: Sreekanth Reddy <Sreekanth.Reddy@lsi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-09-03 07:27:51 -07:00
Sreekanth Reddy 5d32aa2df5 [SCSI] mpt2sas: MPI2 Rev X (2.00.16) specifications
Change set in MPI2 Rev x specification and 2.00.26 header files

1. Added two new AbortType values for TargetModeAbort Request: one to abort
   all IOs from a single initiator and other to abort only Command IUs.

2. Added Use Slot Information during Port Enable Event Reply flag to the Flags
   field of Manufacturing Page 7.

3. Added OEM Identifier to BiosOptions bits of BIOS Page 1.

Signed-off-by: Sreekanth Reddy <Sreekanth.Reddy@lsi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-09-03 07:27:51 -07:00
Sreekanth Reddy 3627dba57f [SCSI] mpt2sas: Change in MPI2_RAID_ACTION_SYSTEM_SHUTDOWN_INITIATED notification methodology
The intent of this patch is to perform a graceful shutdown of target drives even if
volume doesn't exits. Changes done in this patch

1. Removed the check for the presence of volumes before sending down
   MPI2_RAID_ACTION_SYSTEM_SHUTDOWN_INITIATED. Therefore, this RAID action
   would be sent if the card is IR Firmware.

2. The MPI2_RAID_ACTION_SYSTEM_SHUTDOWN_INITIATED is sent even when the
   system undergoes suspend (in addition to remove/shutdown which was already
   present)

Signed-off-by: Sreekanth Reddy <Sreekanth.Reddy@lsi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-09-03 07:27:50 -07:00
Sreekanth Reddy 6409a7d000 [SCSI] mpt2sas: Null pointer deference possibility in mpt2sas_ctl_event_callback function
Added a check to identify if mpi_reply is NULL in mpt2sas_ctl_event_callback()
and return without proceeding if it is the case.

Also modified the following functions to return void instead of 0 or 1
as returning those values from events perspective doesn't make sense.
* _base_async_event()
* mpt2sas_ctl_event_callback()
* mpt2sas_scsih_event_callback()

Signed-off-by: Sreekanth Reddy <Sreekanth.Reddy@lsi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-09-03 07:27:50 -07:00
John Kacur 804a5cb526 [SCSI] hpsa: fix warning with smp_processor_id() in preemptible
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 18:53:50 +04:00
Or Gerlitz 6a06a4b8cf [SCSI] IB/iser: Add Discovery support
To run discovery over iSER we need to advertize the CAP_TEXT_NEGO capability
towards user space. Also need to make sure the login RX buffer is posted when
SendTargets TEXT PDUs are sent. For that end, we use a setting of the
ISCSI_PARAM_DISCOVERY_SESS iscsi param as an indication that this is
discovery session.

Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-08-26 18:53:49 +04:00
Yijing Wang e1e819cc96 [SCSI] pm8001: clean up unnecessary MSI/MSI-X capability find
PCI core will initialize device MSI/MSI-X capability in
pci_msi_init_pci_dev(). So device driver should use
pci_dev->msi_cap/msix_cap to determine whether the device
support MSI/MSI-X instead of using
pci_find_capability(pci_dev, PCI_CAP_ID_MSI/MSIX).
Access to PCIe device config space again will consume more time.

Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Acked-by: lindar_liu <lindar_liu@usish.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-08-26 18:53:47 +04:00
Anand Kumar Santhanam da1dccce12 [SCSI] pm80xx: Fix for 32 bit compilation warning
Signed-off-by: Anandkumar.Santhanam@pmcs.com
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-08-26 18:53:46 +04:00
Joe Lawrence cf9bd21a41 [SCSI] mpt3sas: fix cleanup on controller resource mapping failure
If mpt3sas_base_map_resources takes an early error path then its
counterpart, mpt3sas_base_free_resources needs to be careful about
cleaning up:

  1 - _base_mask_interrupts and _base_make_ioc_ready require memory
      mapped I/O registers, make sure that this is true.

  2 - _base_free_irq iterates over the adapter's reply_queue_list, so
      move this list head initialization out of _base_enable_msix to
      _scsih_probe so this will always be safe.

  3 - check that the controller PCI device and its BARs have been
      enabled before disabling them.

Signed-off-by: Joe Lawrence <joe.lawrence@stratus.com>
Acked-by: Sreekanth Reddy <Sreekanth.Reddy@lsi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-08-26 18:53:45 +04:00
Joe Lawrence 3b3e6f8df3 [SCSI] mpt2sas: fix cleanup on controller resource mapping failure
If mpt2sas_base_map_resources takes an early error path then its
counterpart, mpt2sas_base_free_resources needs to be careful about
cleaning up:

  1 - _base_mask_interrupts and _base_make_ioc_ready require memory
      mapped I/O registers, make sure that this is true.

  2 - _base_free_irq iterates over the adapter's reply_queue_list, so
      move this list head initialization out of _base_enable_msix to
      _scsih_probe so this will always be safe.

  3 - check that the controller PCI device and its BARs have been
      enabled before disabling them.

Signed-off-by: Joe Lawrence <joe.lawrence@stratus.com>
Acked-by: Sreekanth Reddy <Sreekanth.Reddy@lsi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-08-26 18:53:44 +04:00
Ewan D. Milne 279afdfe78 [SCSI] Generate uevents on certain unit attention codes
Generate a uevent when the following Unit Attention ASC/ASCQ
codes are received:

    2A/01  MODE PARAMETERS CHANGED
    2A/09  CAPACITY DATA HAS CHANGED
    38/07  THIN PROVISIONING SOFT THRESHOLD REACHED
    3F/03  INQUIRY DATA HAS CHANGED
    3F/0E  REPORTED LUNS DATA HAS CHANGED

Log kernel messages when the following Unit Attention ASC/ASCQ
codes are received that are not as specific as those above:

    2A/xx  PARAMETERS CHANGED
    3F/xx  TARGET OPERATING CONDITIONS HAVE CHANGED

Added logic to set expecting_lun_change for other LUNs on the target
after REPORTED LUNS DATA HAS CHANGED is received, so that duplicate
uevents are not generated, and clear expecting_lun_change when a
REPORT LUNS command completes, in accordance with the SPC-3
specification regarding reporting of the 3F 0E ASC/ASCQ UA.

[jejb: remove SPC3 test in scsi_report_lun_change and some docbook fixes and
       unused variable fix, both reported by Fengguang Wu]
Signed-off-by: Ewan D. Milne <emilne@redhat.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-08-26 18:52:27 +04:00
James Smart f8813d260e [SCSI] lpfc: Removed obsolete fcp_eq_count and fcp_wq_count driver attributes
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-08-26 12:51:33 +04:00
wenxiong@linux.vnet.ibm.com 43c5fdaf14 [SCSI] ipr: Add sereral new CCIN definitions for new adapters support
Add the appropriate definitions and table entries for new adapter support.

Signed-off-by: Wen Xiong <wenxiong@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-08-26 12:51:32 +04:00
Tomas Henzl 1cdd3cf838 [SCSI] hpsa: remove unneeded variable
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 12:51:31 +04:00
Tomas Henzl 2cc5bfaf85 [SCSI] hpsa: fix a race in cmd_free/scsi_done
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>
2013-08-26 12:51:31 +04:00
Xinghai Yu 80aebef7c1 [SCSI] isci: Fix a infinite loop.
It seems the "phy_index++;" have been placed in wrong place, without it
the while circle up will do a infinite loop.

Signed-off-by: Xinghai Yu <yuxinghai@cn.fujitsu.com>
Acked-by: Lukasz Dorau <lukasz.dorau@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-08-26 12:51:30 +04:00
Wolfram Sang 11f08ca811 [SCSI] ufs: don't check resource with devm_ioremap_resource
devm_ioremap_resource does sanity checks on the given resource. No need to
duplicate this in the driver.

Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Santosh Y <santoshsy@gmail.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-08-26 12:51:29 +04:00
Wei Yongjun 6fae390038 [SCSI] ufshcd-pltfrm: remove redundant dev_err call in ufshcd_pltfrm_probe()
There is a error message within devm_ioremap_resource
already, so remove the dev_err call to avoid redundant
error message.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Santosh Y <santoshsy@gmail.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-08-26 12:51:29 +04:00
Akinobu Mita cfdf9c9103 [SCSI] ufs: don't stop controller before scsi_remove_host()
scsi_remove_host() sends SYNCHRONIZE CACHE commands for write cache
enabled scsi disk devices.  So stopping controller working shouldn't
be done before scsi_remove_host().

Signed-off-by: Akinobu Mita <mita@fixstars.com>
Signed-off-by: Santosh Y <santoshsy@gmail.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-08-26 12:51:28 +04:00
Akinobu Mita e0f4b7c5ac [SCSI] ufs: don't disable_irq() if the IRQ can be shared among devices
When removing the UFS driver, disable_irq() is called and the IRQ is
not enabled again.  Unfortunately, the IRQ is requested with IRQF_SHARED
and it can be shared among several devices.  So disabling the IRQ in
this way is just breaking other devices which are sharing the IRQ.

Signed-off-by: Akinobu Mita <mita@fixstars.com>
Signed-off-by: Santosh Y <santoshsy@gmail.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-08-26 12:51:27 +04:00
Akinobu Mita 36f4f3b672 [SCSI] ufshcd-pci: release ioremapped region during removing driver
Before commit 2953f850c3 ("[SCSI] ufs:
use devres functions for ufshcd"), UFSHCI register was ioremapped by
each glue-driver (ufshcd-pltfrm and ufshcd-pci) during probing and it
was iounmapped by core-driver during removing driver.  The commit
converted ufshcd-pltfrm to use devres functions, but it didn't convert
ufshcd-pci.

Therefore, the change causes ufshcd-pci driver not to iounmap UFSHCI
register region during removing driver.  This fixes it by converting
ufshcd-pci to use devres functions.

Signed-off-by: Akinobu Mita <mita@fixstars.com>
Signed-off-by: Santosh Y <santoshsy@gmail.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-08-26 12:51:27 +04:00
Sujit Reddy Thumma 62694735ca [SCSI] ufs: Add runtime PM support for UFS host controller driver
Add runtime PM helpers to suspend/resume UFS controller at runtime.
Enable runtime PM by default for pci and platform drivers as the
initialized hardware can suspend if it is not used after bootup.

Signed-off-by: Sujit Reddy Thumma <sthumma@codeaurora.org>
Signed-off-by: Santosh Y <santoshsy@gmail.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-08-26 12:51:26 +04:00
Sujit Reddy Thumma 66ec6d5940 [SCSI] ufs: Add support for host assisted background operations
Background operations in the UFS device can be disabled by
the host to reduce the response latency of transfer requests.
Add support for enabling/disabling the background operations
during runtime suspend/resume of the device.

If the device is in critical need of BKOPS it will raise an
URGENT_BKOPS exception which should be handled by the host to
make sure the device performs as expected.

During bootup, the BKOPS is enabled in the device by default.
The disable of BKOPS is supported only when the driver supports
runtime suspend/resume operations as the runtime PM framework
provides a way to determine the device idleness and hence BKOPS
can be managed effectively. During runtime resume the BKOPS is
disabled to reduce latency and during runtime suspend the BKOPS
is enabled to allow device to carry out idle time BKOPS.

In some cases where the BKOPS is disabled during runtime resume
and due to continuous data transfers the runtime suspend is not
triggered, the BKOPS is enabled when the device raises a level-2
exception (outstanding operations - performance impact).

Signed-off-by: Sujit Reddy Thumma <sthumma@codeaurora.org>
Signed-off-by: Santosh Y <santoshsy@gmail.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-08-26 12:51:25 +04:00
Dolev Raviv 68078d5cc1 [SCSI] ufs: Set fDeviceInit flag to initiate device initialization
Allow UFS device to complete its initialization and accept
SCSI commands by setting fDeviceInit flag. The device may take
time for this operation and hence the host should poll until
fDeviceInit flag is toggled to zero. This step is mandated by
UFS device specification for device initialization completion.

Signed-off-by: Dolev Raviv <draviv@codeaurora.org>
Signed-off-by: Sujit Reddy Thumma <sthumma@codeaurora.org>
Signed-off-by: Santosh Y <santoshsy@gmail.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-08-26 12:51:25 +04:00
Sujit Reddy Thumma 5a0b0cb9be [SCSI] ufs: Add support for sending NOP OUT UPIU
As part of device initialization sequence, sending NOP OUT UPIU and
waiting for NOP IN UPIU response is mandatory. This confirms that the
device UFS Transport (UTP) layer is functional and the host can configure
the device with further commands. Add support for sending NOP OUT UPIU to
check the device connection path and test whether the UTP layer on the
device side is functional during initialization.

A tag is acquired from the SCSI tag map space in order to send the device
management command. When the tag is acquired by internal command the scsi
command is rejected with host busy flag in order to requeue the request.
To avoid frequent collisions between internal commands and scsi commands
the device management command tag is allocated in the opposite direction
w.r.t block layer tag allocation.

Signed-off-by: Sujit Reddy Thumma <sthumma@codeaurora.org>
Signed-off-by: Dolev Raviv <draviv@codeaurora.org>
Signed-off-by: Santosh Y <santoshsy@gmail.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-08-26 12:50:39 +04:00
Adheer Chandravanshi 5f09e1f310 [SCSI] libiscsi: Add missing prints for session and connection sysfs attrs
Signed-off-by: Adheer Chandravanshi <adheer.chandravanshi@qlogic.com>
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-08-23 13:46:31 -04:00