linux-2.6-microblaze.git
5 years agoscsi: libsas: check the ata device status by ata_dev_enabled()
Jason Yan [Tue, 25 Sep 2018 02:56:53 +0000 (10:56 +0800)]
scsi: libsas: check the ata device status by ata_dev_enabled()

When ata device IDENTIFY failed, the ata device status is ATA_DEV_UNKNOWN. The
libata reported like:

[113518.620433] ata5.00: qc timeout (cmd 0xec)
[113518.653646] ata5.00: failed to IDENTIFY (I/O error, err_mask=0x4)

But libsas verifies the device status by ata_dev_disabled(), which skipped
ATA_DEV_UNKNOWN. This will make libsas think the ata device probing succeed
the device cannot be actually brought up. And even the new bcast of this
device will be considered as flutter and will not probe this device again.

Change ata_dev_disabled() to !ata_dev_enabled() so that libsas can deal with
this if the ata device probe failed. New bcasts can let us try to probe the
device again and bring it up if it is fine to IDENTIFY.

Tested-by: Zhou Yupeng <zhouyupeng1@huawei.com>
Signed-off-by: Jason Yan <yanaijie@huawei.com>
CC: John Garry <john.garry@huawei.com>
CC: Johannes Thumshirn <jthumshirn@suse.de>
CC: Ewan Milne <emilne@redhat.com>
CC: Christoph Hellwig <hch@lst.de>
CC: Tomas Henzl <thenzl@redhat.com>
CC: Dan Williams <dan.j.williams@intel.com>
CC: Hannes Reinecke <hare@suse.com>
Reviewed-by: John Garry <john.garry@huawei.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: libsas: always unregister the old device if going to discover new
Jason Yan [Tue, 25 Sep 2018 02:56:52 +0000 (10:56 +0800)]
scsi: libsas: always unregister the old device if going to discover new

If we went into sas_rediscover_dev() the attached_sas_addr was already insured
not to be zero. So it's unnecessary to check if the attached_sas_addr is zero.

And although if the sas address is not changed, we always have to unregister
the old device when we are going to register a new one. We cannot just leave
the device there and bring up the new.

Signed-off-by: Jason Yan <yanaijie@huawei.com>
CC: chenxiang <chenxiang66@hisilicon.com>
CC: John Garry <john.garry@huawei.com>
CC: Johannes Thumshirn <jthumshirn@suse.de>
CC: Ewan Milne <emilne@redhat.com>
CC: Christoph Hellwig <hch@lst.de>
CC: Tomas Henzl <thenzl@redhat.com>
CC: Dan Williams <dan.j.williams@intel.com>
CC: Hannes Reinecke <hare@suse.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: libsas: make the lldd_port_deformed method optional
Jason Yan [Tue, 25 Sep 2018 02:56:51 +0000 (10:56 +0800)]
scsi: libsas: make the lldd_port_deformed method optional

Now LLDDs have to implement lldd_port_deformed method otherwise NULL
dereference will happen. Make it optional and remove the dummy implementation
in hisi_sas.

Signed-off-by: Jason Yan <yanaijie@huawei.com>
CC: John Garry <john.garry@huawei.com>
CC: Johannes Thumshirn <jthumshirn@suse.de>
CC: Ewan Milne <emilne@redhat.com>
CC: Christoph Hellwig <hch@lst.de>
CC: Tomas Henzl <thenzl@redhat.com>
CC: Dan Williams <dan.j.williams@intel.com>
CC: Hannes Reinecke <hare@suse.com>
Acked-by: John Garry <john.garry@huawei.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: libsas: delete dead code in scsi_transport_sas.c
Jason Yan [Tue, 25 Sep 2018 02:56:50 +0000 (10:56 +0800)]
scsi: libsas: delete dead code in scsi_transport_sas.c

This code is dead and no clue implies that it will be back again.

Signed-off-by: Jason Yan <yanaijie@huawei.com>
CC: John Garry <john.garry@huawei.com>
CC: Johannes Thumshirn <jthumshirn@suse.de>
CC: Ewan Milne <emilne@redhat.com>
CC: Christoph Hellwig <hch@lst.de>
CC: Tomas Henzl <thenzl@redhat.com>
CC: Dan Williams <dan.j.williams@intel.com>
CC: Hannes Reinecke <hare@suse.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: John Garry <john.garry@huawei.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: megaraid: fix spelling mistake "maibox" -> "mailbox"
Colin Ian King [Sun, 23 Sep 2018 22:25:48 +0000 (23:25 +0100)]
scsi: megaraid: fix spelling mistake "maibox" -> "mailbox"

Trivial fix to spelling mistake in warning message and comments

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: FlashPoint: Remove unnecessary parentheses
Nathan Chancellor [Thu, 20 Sep 2018 21:10:32 +0000 (14:10 -0700)]
scsi: FlashPoint: Remove unnecessary parentheses

Clang warns when multiple pairs of parentheses are used for a single
conditional statement.

In file included from drivers/scsi/BusLogic.c:57:
drivers/scsi/FlashPoint.c:2947:34: warning: equality comparison with extraneous parentheses [-Wparentheses-equality]
                                if ((currSCCB->Sccb_scsistat == SELECT_SN_ST)) {
                                     ~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~
drivers/scsi/FlashPoint.c:2947:34: note: remove extraneous parentheses around the comparison to silence this warning
                                if ((currSCCB->Sccb_scsistat == SELECT_SN_ST)) {
                                    ~                        ^              ~
drivers/scsi/FlashPoint.c:2947:34: note: use '=' to turn this equality comparison into an assignment
                                if ((currSCCB->Sccb_scsistat == SELECT_SN_ST)) {
                                                             ^~
                                                             =
drivers/scsi/FlashPoint.c:2956:39: warning: equality comparison with extraneous parentheses [-Wparentheses-equality]
                                else if ((currSCCB->Sccb_scsistat ==
                                          ~~~~~~~~~~~~~~~~~~~~~~~~^~
drivers/scsi/FlashPoint.c:2956:39: note: remove extraneous parentheses around the comparison to silence this warning
                                else if ((currSCCB->Sccb_scsistat ==
                                         ~                        ^
drivers/scsi/FlashPoint.c:2956:39: note: use '=' to turn this equality comparison into an assignment
                                else if ((currSCCB->Sccb_scsistat ==
                                                                  ^~
                                                                  =
2 warnings generated.

Link: https://github.com/ClangBuiltLinux/linux/issues/156
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Acked-by: Khalid Aziz <khalid@gonehiking.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: hpsa: Use vmemdup_user to replace the open code
zhong jiang [Tue, 18 Sep 2018 15:54:41 +0000 (23:54 +0800)]
scsi: hpsa: Use vmemdup_user to replace the open code

vmemdup_user is better than duplicating its implementation, So just replace
the open code.

The issue is detected with the help of Coccinelle.

Tested-by: Don Brace <don.brace@microsemi.com>
Acked-by: Don Brace <don.brace@microsemi.com>
Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: advansys: Remove unnecessary parentheses
Nathan Chancellor [Thu, 20 Sep 2018 20:58:58 +0000 (13:58 -0700)]
scsi: advansys: Remove unnecessary parentheses

Clang warns when multiple pairs of parentheses are used for a single
conditional statement.

drivers/scsi/advansys.c:6451:20: warning: equality comparison with
extraneous parentheses [-Wparentheses-equality]
                                if ((sdtr_data == 0xFF)) {
                                     ~~~~~~~~~~^~~~~~~
drivers/scsi/advansys.c:6451:20: note: remove extraneous parentheses
around the comparison to silence this warning
                                if ((sdtr_data == 0xFF)) {
                                    ~          ^      ~
drivers/scsi/advansys.c:6451:20: note: use '=' to turn this equality
comparison into an assignment
                                if ((sdtr_data == 0xFF)) {
                                               ^~
                                               =
1 warning generated.

Link: https://github.com/ClangBuiltLinux/linux/issues/155
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Acked-by: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: target: iblock: split T10 PI SGL across command bios
Greg Edwards [Tue, 4 Sep 2018 17:19:10 +0000 (11:19 -0600)]
scsi: target: iblock: split T10 PI SGL across command bios

When T10 PI is enabled on a backing device for the iblock backstore, the PI
SGL for the entire command is attached to the first bio only.  This works fine
if the command is covered by a single bio, but can result in ref tag errors in
the client for the other bios in a multi-bio command, e.g.

[   47.631236] sda: ref tag error at location 2048 (rcvd 0)
[   47.637658] sda: ref tag error at location 4096 (rcvd 0)
[   47.644228] sda: ref tag error at location 6144 (rcvd 0)

The command will be split into multiple bios if the number of data SG elements
exceeds BIO_MAX_PAGES (see iblock_get_bio()).

The bios may later be split again in the block layer on the host after
iblock_submit_bios(), depending on the queue limits of the backing device.
The block and SCSI layers will pass through the whole PI SGL down to the LLDD
however that first bio is split up, but the LLDD may only use the portion that
corresponds to the data length (depends on the LLDD, tested with scsi_debug).

Split the PI SGL across the bios in the command, so each bio's
bio_integrity_payload contains the protection information for the data in the
bio.  Use an sg_mapping_iter to keep track of where we are in PI SGL, so we
know where to start with the next bio.

Signed-off-by: Greg Edwards <gedwards@ddn.com>
Reviewed-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: qla2xxx: Remove set but not used variable 'ptr_dma'
YueHaibing [Thu, 13 Sep 2018 02:40:56 +0000 (02:40 +0000)]
scsi: qla2xxx: Remove set but not used variable 'ptr_dma'

Fixes gcc '-Wunused-but-set-variable' warning:

drivers/scsi/qla2xxx/qla_iocb.c: In function 'qla24xx_els_dcmd2_iocb':
drivers/scsi/qla2xxx/qla_iocb.c:2644:13: warning:
 variable 'ptr_dma' set but not used [-Wunused-but-set-variable]

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Acked-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: lpfc: Remove set but not used variable 'sgl_size'
YueHaibing [Thu, 13 Sep 2018 02:04:59 +0000 (02:04 +0000)]
scsi: lpfc: Remove set but not used variable 'sgl_size'

Fixes gcc '-Wunused-but-set-variable' warning:

drivers/scsi/lpfc/lpfc_nvme.c: In function 'lpfc_new_nvme_buf':
drivers/scsi/lpfc/lpfc_nvme.c:2238:24: warning:
 variable 'sgl_size' set but not used [-Wunused-but-set-variable]
  int bcnt, num_posted, sgl_size;
                        ^
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: bnx2fc: Remove set but not used variable 'oxid'
YueHaibing [Wed, 12 Sep 2018 02:50:52 +0000 (02:50 +0000)]
scsi: bnx2fc: Remove set but not used variable 'oxid'

Fixes gcc '-Wunused-but-set-variable' warning:

drivers/scsi/bnx2fc/bnx2fc_fcoe.c: In function 'bnx2fc_rcv':
drivers/scsi/bnx2fc/bnx2fc_fcoe.c:435:17: warning:
 variable 'oxid' set but not used [-Wunused-but-set-variable]

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: core: remove unnecessary unlikely()
Igor Stoppa [Wed, 5 Sep 2018 20:47:20 +0000 (23:47 +0300)]
scsi: core: remove unnecessary unlikely()

BUG_ON() already contains an unlikely(), there is no need for another one.

Signed-off-by: Igor Stoppa <igor.stoppa@huawei.com>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: "James E.J. Bottomley" <jejb@linux.vnet.ibm.com>
Cc: linux-scsi@vger.kernel.org
CC: linux-kernel@vger.kernel.org
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: aic7xxx: remove set but not used variable 'shared_scb_data'
YueHaibing [Tue, 4 Sep 2018 03:36:01 +0000 (03:36 +0000)]
scsi: aic7xxx: remove set but not used variable 'shared_scb_data'

Fixes gcc '-Wunused-but-set-variable' warning:

drivers/scsi/aic7xxx/aic79xx_pci.c: In function 'ahd_pci_config':
drivers/scsi/aic7xxx/aic79xx_pci.c:291:19: warning:
 variable 'shared_scb_data' set but not used [-Wunused-but-set-variable]

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: iscsi: target: fix spelling mistake "entires" -> "entries"
Colin Ian King [Fri, 14 Sep 2018 12:28:08 +0000 (13:28 +0100)]
scsi: iscsi: target: fix spelling mistake "entires" -> "entries"

Trivial fix to spelling mistake in function name and comment

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: pm80xx: Remove set but not used variable 'page_code'
YueHaibing [Fri, 14 Sep 2018 01:38:56 +0000 (01:38 +0000)]
scsi: pm80xx: Remove set but not used variable 'page_code'

Fixes gcc '-Wunused-but-set-variable' warning:

drivers/scsi/pm8001/pm80xx_hwi.c: In function 'pm8001_set_phy_profile':
drivers/scsi/pm8001/pm80xx_hwi.c:4679:6: warning:
 variable 'page_code' set but not used [-Wunused-but-set-variable]

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Acked-by: Jack Wang <jinpu.wang@profitbricks.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: pm80xx: Remove set but not used variable 'device_id'
YueHaibing [Thu, 13 Sep 2018 01:54:24 +0000 (01:54 +0000)]
scsi: pm80xx: Remove set but not used variable 'device_id'

Fixes gcc '-Wunused-but-set-variable' warning:

drivers/scsi/pm8001/pm8001_sas.c: In function 'pm8001_I_T_nexus_event_handler':
drivers/scsi/pm8001/pm8001_sas.c:1052:6: warning:
 variable 'device_id' set but not used [-Wunused-but-set-variable]

drivers/scsi/pm8001/pm8001_sas.c: In function 'pm8001_abort_task':
drivers/scsi/pm8001/pm8001_sas.c:1191:6: warning:
 variable 'device_id' set but not used [-Wunused-but-set-variable]

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Acked-by: Jack Wang <jinpu.wang@profitbricks.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: ufshcd: Fix NULL pointer dereference for in ufshcd_init
Vivek Gautam [Tue, 7 Aug 2018 17:47:39 +0000 (23:17 +0530)]
scsi: ufshcd: Fix NULL pointer dereference for in ufshcd_init

Error paths in ufshcd_init() ufshcd_hba_exit() killed clk_scaling workqueue
when the workqueue is actually created quite late in ufshcd_init().  So, we
end up getting NULL pointer dereference in such error paths.  Fix this by
moving clk_scaling initialization and kill codes to two separate methods, and
call them at required places.

Fixes: 401f1e4490ee ("scsi: ufs: don't suspend clock scaling during clock
gating")

Signed-off-by: Vivek Gautam <vivek.gautam@codeaurora.org>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Subhash Jadavani <subhashj@codeaurora.org>
Cc: Matthias Kaehlcke <mka@chromium.org>
Cc: Evan Green <evgreen@chromium.org>
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Evan Green <evgreen@chromium.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: message: fusion: fix a few trivial spelling mistakes
Colin Ian King [Mon, 10 Sep 2018 09:11:07 +0000 (10:11 +0100)]
scsi: message: fusion: fix a few trivial spelling mistakes

Trival fix to spelling mistakes:

 PrimativeSeqErrCount -> PrimitiveSeqErrCount
 Primative -> Primitive
 primative -> primitive
 mptsas_broadcast_primative_work -> mptsas_broadcast_primitive_work
 Broadcase -> Broadcast

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: pm80xx: Update driver version to 0.1.39
Deepak Ukey [Tue, 11 Sep 2018 08:48:05 +0000 (14:18 +0530)]
scsi: pm80xx: Update driver version to 0.1.39

Updated the driver version from 0.1.38 to 0.1.39.

Signed-off-by: Deepak Ukey <deepak.ukey@microchip.com>
Signed-off-by: Viswas G <Viswas.G@microchip.com>
Acked-by: Jack Wang <jinpu.wang@profitbricks.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: pm80xx: Fixed system hang issue during kexec boot
Deepak Ukey [Tue, 11 Sep 2018 08:48:04 +0000 (14:18 +0530)]
scsi: pm80xx: Fixed system hang issue during kexec boot

When the firmware is not responding, execution of kexec boot causes a system
hang. When firmware assertion happened, driver get notified with interrupt
vector updated in MPI configuration table. Then, the driver will read
scratchpad register and set controller_fatal_error flag to true.

Signed-off-by: Deepak Ukey <deepak.ukey@microchip.com>
Signed-off-by: Viswas G <Viswas.G@microchip.com>
Acked-by: Jack Wang <jinpu.wang@profitbricks.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: pm80xx: Corrected dma_unmap_sg() parameter
Deepak Ukey [Tue, 11 Sep 2018 08:48:03 +0000 (14:18 +0530)]
scsi: pm80xx: Corrected dma_unmap_sg() parameter

For the function dma_unmap_sg(), the <nents> parameter should be number of
elements in the scatter list prior to the mapping, not after the mapping.

Signed-off-by: Deepak Ukey <deepak.ukey@microchip.com>
Signed-off-by: Viswas G <Viswas.G@microchip.com>
Acked-by: Jack Wang <jinpu.wang@profitbricks.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: pm80xx: Fix for phy enable/disable functionality
Deepak Ukey [Tue, 11 Sep 2018 08:48:02 +0000 (14:18 +0530)]
scsi: pm80xx: Fix for phy enable/disable functionality

Added proper mask for phy id in mpi_phy_stop_resp().

Signed-off-by: Deepak Ukey <deepak.ukey@microchip.com>
Signed-off-by: Viswas G <Viswas.G@microchip.com>
Acked-by: Jack Wang <jinpu.wang@profitbricks.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: qla2xxx: fix typo "CT-PASSTRHU" -> "CT-PASSTHRU"
Colin Ian King [Sun, 9 Sep 2018 22:25:03 +0000 (23:25 +0100)]
scsi: qla2xxx: fix typo "CT-PASSTRHU" -> "CT-PASSTHRU"

Trivial fix to typo in debug message text.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: aic7xxx: remove unused redundant variable num_chip_names
Colin Ian King [Tue, 4 Sep 2018 14:36:56 +0000 (15:36 +0100)]
scsi: aic7xxx: remove unused redundant variable num_chip_names

Variable num_chip_names is defined but not used, hence it is redundant and can
be removed.

Cleans up clang warning:
'num_chip_names' defined but not used [-Wunused-const-variable=]

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: libfc: remove set but not used variable 'rpriv'
YueHaibing [Tue, 4 Sep 2018 03:31:07 +0000 (03:31 +0000)]
scsi: libfc: remove set but not used variable 'rpriv'

Fixes gcc '-Wunused-but-set-variable' warning:

drivers/scsi/libfc/fc_fcp.c: In function 'fc_queuecommand':
drivers/scsi/libfc/fc_fcp.c:1875:30: warning:
 variable 'rpriv' set but not used [-Wunused-but-set-variable]

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Acked-by: Johannes Thumshirn <jth@kernel.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: arcmsr: Spelling s/rebulid/rebuild/
Geert Uytterhoeven [Mon, 3 Sep 2018 17:35:29 +0000 (19:35 +0200)]
scsi: arcmsr: Spelling s/rebulid/rebuild/

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: sym53c8xx: fix NULL pointer dereference panic in sym_int_sir()
George Kennedy [Wed, 29 Aug 2018 15:38:16 +0000 (11:38 -0400)]
scsi: sym53c8xx: fix NULL pointer dereference panic in sym_int_sir()

sym_int_sir() in sym_hipd.c does not check the command pointer for NULL before
using it in debug message prints.

Suggested-by: Matthew Wilcox <matthew.wilcox@oracle.com>
Signed-off-by: George Kennedy <george.kennedy@oracle.com>
Reviewed-by: Mark Kanda <mark.kanda@oracle.com>
Acked-by: Matthew Wilcox <matthew.wilcox@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: lpfc: update driver version to 12.0.0.7
James Smart [Mon, 10 Sep 2018 17:30:51 +0000 (10:30 -0700)]
scsi: lpfc: update driver version to 12.0.0.7

Update the driver version to 12.0.0.7

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: lpfc: add support to retrieve firmware logs
James Smart [Mon, 10 Sep 2018 17:30:50 +0000 (10:30 -0700)]
scsi: lpfc: add support to retrieve firmware logs

This patch adds the ability to read firmware logs from the adapter. The driver
registers a buffer with the adapter that is then written to by the adapter.
The adapter posts CQEs to indicate content updates in the buffer. While the
adapter is writing to the buffer in a circular fashion, an application will
poll the driver to read the next amount of log data from the buffer.

Driver log buffer size is configurable via the ras_fwlog_buffsize sysfs
attribute. Verbosity to be used by firmware when logging to host memory is
controlled through the ras_fwlog_level attribute.  The ras_fwlog_func
attribute enables or disables loggy by firmware.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: lpfc: reduce locking when updating statistics
James Smart [Mon, 10 Sep 2018 17:30:49 +0000 (10:30 -0700)]
scsi: lpfc: reduce locking when updating statistics

Currently, on each io completion, the stats update routine indiscriminately
holds a lock. While holding the adapter-wide lock, checks are made to check
whether status are being tracked. When disabled (the default), the locking
wasted a lot of cycles.

Check for stats enablement before taking the lock.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: lpfc: Fix errors in log messages.
James Smart [Mon, 10 Sep 2018 17:30:48 +0000 (10:30 -0700)]
scsi: lpfc: Fix errors in log messages.

Message 6408 is displayed for each entry in an array, but the cpu and queue
numbers were incorrect for the entry.  Message 6001 includes an extraneous
character.

Resolve both issues

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: lpfc: Correct invalid EQ doorbell write on if_type=6
James Smart [Mon, 10 Sep 2018 17:30:47 +0000 (10:30 -0700)]
scsi: lpfc: Correct invalid EQ doorbell write on if_type=6

During attachment, the driver writes the EQ doorbell to disable potential
interrupts from an EQ. The current EQ doorbell format used for clearing the
interrupt is incorrect and uses an if_type=2 format, making the operation act
on the wrong EQ.

Correct the code to use the proper if_type=6 EQ doorbell format.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: lpfc: Correct irq handling via locks when taking adapter offline
James Smart [Mon, 10 Sep 2018 17:30:46 +0000 (10:30 -0700)]
scsi: lpfc: Correct irq handling via locks when taking adapter offline

When taking the board offline while performing i/o, unsafe locking errors
occurred and irq level isn't properly managed.

In lpfc_sli_hba_down, spin_lock_irqsave(&phba->hbalock, flags) does not
disable softirqs raised from timer expiry.  It is possible that a softirq is
raised from the lpfc_els_retry_delay routine and recursively requests the same
phba->hbalock spinlock causing deadlock.

Address the deadlocks by creating a new port_list lock. The softirq behavior
can then be managed a level deeper into the calling sequences.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: lpfc: Correct soft lockup when running mds diagnostics
James Smart [Mon, 10 Sep 2018 17:30:45 +0000 (10:30 -0700)]
scsi: lpfc: Correct soft lockup when running mds diagnostics

When running an mds diagnostic that passes frames with the switch, soft
lockups are detected. The driver is in a CQE processing loop and has
sufficient amount of traffic that it never exits the ring processing routine,
thus the "lockup".

Cap the number of elements in the work processing routine to 64 elements. This
ensures that the cpu will be given up and the handler reschedule to process
additional items.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: lpfc: Correct race with abort on completion path
James Smart [Mon, 10 Sep 2018 17:30:44 +0000 (10:30 -0700)]
scsi: lpfc: Correct race with abort on completion path

On io completion, the driver is taking an adapter wide lock and nulling the
scsi command back pointer.  The nulling of the back pointer is to signify the
io was completed and the scsi_done() routine was called.  However, the routine
makes no check to see if the abort routine had done the same thing and
possibly nulled the pointer. Thus it may doubly-complete the io.

Make the following mods:

- Check to make sure forward progress (call scsi_done()) only happens if the
  command pointer was non-null.

- As the taking of the lock, which is adapter wide, is very costly on a system
  under load, null the pointer using an xchg operation rather than under lock.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: lpfc: Raise nvme defaults to support a larger io and more connectivity
James Smart [Mon, 10 Sep 2018 17:30:43 +0000 (10:30 -0700)]
scsi: lpfc: Raise nvme defaults to support a larger io and more connectivity

When nvme is enabled, change the default for two parameters:
 sg_seg_cnt - raise the per-io sg list size so that 1MB ios are
     supported (based on a 4k buffer per element).
 iocb_cnt - raise the number of buffers used for things like
     NVME LS request/responses to allow more concurrent requests
     to for larger nvme configs.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: lpfc: raise sg count for nvme to use available sg resources
James Smart [Mon, 10 Sep 2018 17:30:42 +0000 (10:30 -0700)]
scsi: lpfc: raise sg count for nvme to use available sg resources

The driver allocates a sg list per io struture based on a fixed maximum
size. When it registers with the protocol transports and indicates the max sg
list size it supports, the driver manipulates the fixed value to report a
lesser amount so that it has reserved space for sg elements that are used for
DIF.

The driver initialization path sets the cfg_sg_seg_cnt field to the
manipulated value for scsi. NVME initialization ran afterward and capped it's
maximum by the manipulated value for SCSI. This erroneously made NVME report
the SCSI-reduce-for-DIF value that reduced the max io size for nvme and wasted
sg elements.

Rework the driver so that cfg_sg_seg_cnt becomes the overall maximum size and
allow the max size to be tunable.  A separate (new) scsi sg count is then
setup with the scsi-modified reduced value. NVME then initializes based off
the overall maximum.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: lpfc: Fix GFT_ID and PRLI logic for RSCN
James Smart [Mon, 10 Sep 2018 17:30:41 +0000 (10:30 -0700)]
scsi: lpfc: Fix GFT_ID and PRLI logic for RSCN

Driver only sends NVME PRLI to a device that also supports FCP.  This resuls
in remote ports that don't have fc_remote_ports created for them. The driver
is clearing the nlp_fc4_type for a ndlp at the wrong time.

Fix by moving the nlp_fc4_type clearing to the discovery engine in the
DEVICE_RECOVERY state. Also ensure that rport registration is done for all
nlp_fc4_types.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: qla2xxx: Update driver version to 10.00.00.11-k
Himanshu Madhani [Tue, 11 Sep 2018 17:18:27 +0000 (10:18 -0700)]
scsi: qla2xxx: Update driver version to 10.00.00.11-k

Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: qla2xxx: Fix double increment of switch scan retry count
Quinn Tran [Tue, 11 Sep 2018 17:18:26 +0000 (10:18 -0700)]
scsi: qla2xxx: Fix double increment of switch scan retry count

This patch fixes issue when switch command fails, current code increments
retry count twice. This results in a smaller number of retries.

Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: qla2xxx: Fix duplicate switch's Nport ID entries
Quinn Tran [Tue, 11 Sep 2018 17:18:25 +0000 (10:18 -0700)]
scsi: qla2xxx: Fix duplicate switch's Nport ID entries

Current code relies on switch to provide a unique combination of WWPN +
NPORTID to tract an FC port.  This patch tries to detect a case where switch
data base can get corrupted where multiple WWPNs can have the same Nport ID.
The 1st Nport ID on the list will be kept while the duplicate Nport ID will be
discarded.

Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: qla2xxx: Remove stale debug trace message from tcm_qla2xxx
Quinn Tran [Tue, 11 Sep 2018 17:18:24 +0000 (10:18 -0700)]
scsi: qla2xxx: Remove stale debug trace message from tcm_qla2xxx

Remove stale debug trace.

Fixes: 1eb42f965ced ("qla2xxx: Make trace flags more readable")
Cc: stable@vger.kernel.org #4.10
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: qla2xxx: Fix premature command free
Quinn Tran [Tue, 11 Sep 2018 17:18:23 +0000 (10:18 -0700)]
scsi: qla2xxx: Fix premature command free

When qla2xxx and Target Core gets out of sync during command cleanup, qla2xxx
will not free command until it is out of firmware's hand and Target Core has
called the release on the command.

This patch adds synchronization using cmd_lock and release flag.  If the
release flag is set, then qla2xxx will free up the command using
qlt_free_cmd() otherwise transport_generic_free_cmd() will be responsible for
relase of the command.

Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: qla2xxx: Reject bsg request if chip is down.
Quinn Tran [Tue, 11 Sep 2018 17:18:22 +0000 (10:18 -0700)]
scsi: qla2xxx: Reject bsg request if chip is down.

Reject bsg request if chip is down.  This prevent erroneous timeout.

Fixes: d051a5aa1c23 ("[SCSI] qla2xxx: Add an "is reset active" helper.")
Cc: stable@vger.kernel.org # 4.10
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: qla2xxx: shutdown chip if reset fail
Quinn Tran [Tue, 11 Sep 2018 17:18:21 +0000 (10:18 -0700)]
scsi: qla2xxx: shutdown chip if reset fail

If chip unable to fully initialize, use full shutdown sequence to clear out
any stale FW state.

Fixes: e315cd28b9ef ("[SCSI] qla2xxx: Code changes for qla data structure refactoring")
Cc: stable@vger.kernel.org #4.10
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: qla2xxx: Fix stuck session in PLOGI state
Quinn Tran [Tue, 11 Sep 2018 17:18:20 +0000 (10:18 -0700)]
scsi: qla2xxx: Fix stuck session in PLOGI state

On PLOGI complete + RSCN received, driver tries to handle RSCN but failed to
reset the session back to the beginning to restart the login process. Instead
the session was left in the Plogi complete without moving forward.  This patch
will push the session state back to the delete state and restart the
connection.

Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: qla2xxx: Fix early srb free on abort
Quinn Tran [Tue, 11 Sep 2018 17:18:19 +0000 (10:18 -0700)]
scsi: qla2xxx: Fix early srb free on abort

Task abort can take 2 paths: 1) serial/synchronous abort where the calling
thread will put to sleep, wait for completion and free cmd resource.  2) async
abort where the cmd free will be free by the completion thread.  For path 2,
driver is freeing the SRB too early.

Fixes: f6145e86d21f ("scsi: qla2xxx: Fix race between switch cmd completion and timeout")
Cc: stable@vger.kernel.org # 4.19
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: qla2xxx: Add mode control for each physical port
Quinn Tran [Tue, 11 Sep 2018 17:18:18 +0000 (10:18 -0700)]
scsi: qla2xxx: Add mode control for each physical port

Add ability to allow each physical port to control operating mode.  Current
code forces all ports to behave in one mode (i.e. initiator, target or
dual). This patch allows user to select the operating mode for each port.

- Driver must be loaded in dual mode to allow resource allocation

modprobe qla2xxx qlini_mode=dual

- In addition user can make adjustment to exchange resources using following
  command

echo 1024 > /sys/class/scsi_host/host<x>/ql2xiniexchg
echo 1024 > /sys/class/scsi_host/host<x>/ql2xexchoffld

- trigger mode change and new setting of ql2xexchoffld|ql2xiniexchg

echo [<value>] > /sys/class/scsi_host/host<x>/qlini_mode

where, value can be one of following
  - enabled
  - disabled
  - dual
  - exclusive

Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: qla2xxx: Fix race condition for resource cleanup
Quinn Tran [Tue, 11 Sep 2018 17:18:17 +0000 (10:18 -0700)]
scsi: qla2xxx: Fix race condition for resource cleanup

For Loop topology + Initiator, FW is in control of PLOGI/PRLI.  When link is
reset, driver will try to cleanup the session by doing an Implicit Logout.
Instead, the code is doing an Explicit Logout.  The explicit logout interferes
with FW state machine in trying to reconnect.  The implicit logout was meant
for FW to flush commands.  In loop, it is not needed because FW will auto
flush.

Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: qla2xxx: Fix dropped srb resource.
Quinn Tran [Tue, 11 Sep 2018 17:18:16 +0000 (10:18 -0700)]
scsi: qla2xxx: Fix dropped srb resource.

When FW rejects a command due to "entry_status" error (malform IOCB), the srb
resource needs to be returned back for cleanup.  The filter to catch this is
in the wrong location.

Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: qla2xxx: Fix port speed display on chip reset
Quinn Tran [Tue, 11 Sep 2018 17:18:15 +0000 (10:18 -0700)]
scsi: qla2xxx: Fix port speed display on chip reset

Clear port speed value on chip reset.

Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: qla2xxx: Check for Register disconnect
Sawan Chandak [Tue, 11 Sep 2018 17:18:14 +0000 (10:18 -0700)]
scsi: qla2xxx: Check for Register disconnect

During adapter shutdown process check for register disconnect before
proceeding to call PCI functions.

Signed-off-by: Sawan Chandak <sawan.chandak@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: qla2xxx: Increase abort timeout value
Quinn Tran [Tue, 11 Sep 2018 17:18:13 +0000 (10:18 -0700)]
scsi: qla2xxx: Increase abort timeout value

Abort IOCB request can take up to 40s or 2 ABTS timeout.  We will wait for
ABTS response for 20s. On a timeout, second ABTS can go out with another 20s
timeout. On 2nd ABTS timeout FW will automatically do Logout.

Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: qla2xxx: Allow FC-NVMe underrun to be handled by transport
Darren Trapp [Tue, 11 Sep 2018 17:18:12 +0000 (10:18 -0700)]
scsi: qla2xxx: Allow FC-NVMe underrun to be handled by transport

This patch allows FC-NVMe under-run to be handled by transport

Signed-off-by: Darren Trapp <darren.trapp@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: qla2xxx: Update driver version to 10.00.00.10-k
Himanshu Madhani [Tue, 4 Sep 2018 21:19:21 +0000 (14:19 -0700)]
scsi: qla2xxx: Update driver version to 10.00.00.10-k

Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: qla2xxx: Move ABTS code behind qpair
Quinn Tran [Tue, 4 Sep 2018 21:19:20 +0000 (14:19 -0700)]
scsi: qla2xxx: Move ABTS code behind qpair

Current abort code defaults to legacy single queue where hardware_lock is used
to protect command search.  This patch moves this code behind the QPair where
the qp_lock_ptr will reference the appropriate lock for either legacy/single
queue or MQ.

Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: qla2xxx: Remove stale ADISC_DONE event
Himanshu Madhani [Tue, 4 Sep 2018 21:19:19 +0000 (14:19 -0700)]
scsi: qla2xxx: Remove stale ADISC_DONE event

Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: qla2xxx: Fix Remote port registration
Quinn Tran [Tue, 4 Sep 2018 21:19:18 +0000 (14:19 -0700)]
scsi: qla2xxx: Fix Remote port registration

Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: qla2xxx: Remove ASYNC GIDPN switch command
Himanshu Madhani [Tue, 4 Sep 2018 21:19:17 +0000 (14:19 -0700)]
scsi: qla2xxx: Remove ASYNC GIDPN switch command

Using GPNFT/GNNFT command will be able to cover switch database with less
number of scans. This patch removes Get NportID with provided WWPN/GIDPN
switch command. By making this change, in large fabric with lots of remote
port or NPIV ports with noisy SAN, the number of GIDPN commands issued by a
port when it detects large number of remote ports going away or coming back,
can overwhelmn the switch and it can becomde unresponsive. In a case where the
fabric has not change, GIDPN is not required.

Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: qla2xxx: Reduce holding sess_lock to prevent CPU lock-up
Quinn Tran [Tue, 4 Sep 2018 21:19:16 +0000 (14:19 -0700)]
scsi: qla2xxx: Reduce holding sess_lock to prevent CPU lock-up

- Reduce sess_lock holding to prevent CPU Lock up. sess_lock was held across
  fc_port registration and deletion.  These calls can be blocked by upper
  layer. Sess_lock is also being accessed by interrupt thread.

- Reduce number of loops in processing work_list to prevent kernel complaint
  of CPU lockup or holding sess_lock.

Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: qla2xxx: Move {get|rel}_sp to base_qpair struct
Quinn Tran [Tue, 4 Sep 2018 21:19:15 +0000 (14:19 -0700)]
scsi: qla2xxx: Move {get|rel}_sp to base_qpair struct

Currently, qla2x00_[get_sp|rel_sp] routines does {get|release} of srb
resource/srb_mempool directly from qla_hw_data.  qla2x00_start_sp() is used to
issue management commands through the default Request Q 0 & Response Q 0 or
base_qpair. This patch moves access of these resources through
base_qpair. Instead of having knowledge of specific Q number and lock to
rsp/req queue, this change will key off the qpair that is assigned to the srb
resource. This lays the ground work for other routines to see this resource
through the qpair.

Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: qla2xxx: Add support for ZIO6 interrupt threshold
Quinn Tran [Tue, 4 Sep 2018 21:19:14 +0000 (14:19 -0700)]
scsi: qla2xxx: Add support for ZIO6 interrupt threshold

Add sysfs support to control zio6 interrupt threshold. Using this sysfs hook
user can set when to generate interrupts. This value will be used to tell
firmware to generate interrupt at a certain interval.  If the number of
exchanges/commands fall below defined setting, then the interrupt will be
generated immediately by the firmware.

By default ZIO6 will coalesce interrupts to a specified interval
regardless of low traffic or high traffic.

[mkp: fixed several typos]

Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: qla2xxx: Fix out of order Termination and ABTS response
Quinn Tran [Tue, 4 Sep 2018 21:19:13 +0000 (14:19 -0700)]
scsi: qla2xxx: Fix out of order Termination and ABTS response

Following changes are added by this patch

- Prevent ABTS Response from getting in front of Termination of exchange.
  Firmware requires driver to cleanup exchanges before ABTS response can be
  sent. This reduces ABTS response error which triggers extra command
  re-termination and re-sending of ABTS response.

- Add bits in driver and tracks CTIO/ATIO attribute bits for proper command
  Termination. A copy of the ATTR bits will be kept in the ABTS task
  management command as a back up copy, if an ABTS response encounters an
  error.

Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: qla2xxx: Add logic to detect ABTS hang and response completion
Quinn Tran [Tue, 4 Sep 2018 21:19:12 +0000 (14:19 -0700)]
scsi: qla2xxx: Add logic to detect ABTS hang and response completion

ABTS error completion can trigger an exchange cleanup from the driver and
another ABTS response will be generated.  This retry of ABTS response can
cause loop between driver trying to send ABTS and firmware returning error.

This patch fixes this issue by adding logic to check for unresolved exchanges
and clean up before ABTS is retried.  This patch also addes the fix to use the
same qpair as the ABTS completion for the terminatation of exchange as well as
retry of ABTS response.

Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: qla2xxx: Add appropriate debug info for invalid RX_ID
Quinn Tran [Tue, 4 Sep 2018 21:19:11 +0000 (14:19 -0700)]
scsi: qla2xxx: Add appropriate debug info for invalid RX_ID

When driver detect CTIO_INVALID_RX_ID status for CTIO, print message with
correct information to help with debugging.

Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: qla2xxx: Fix deadlock between ATIO and HW lock
Quinn Tran [Tue, 4 Sep 2018 21:19:10 +0000 (14:19 -0700)]
scsi: qla2xxx: Fix deadlock between ATIO and HW lock

Move ATIO queue processing out of hardware_lock to prevent deadlock.

Fixes: 3bb67df5b5f8 ("qla2xxx: Check for online flag instead of active reset when transmitting responses")
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: qla2xxx: Serialize mailbox request
Quinn Tran [Tue, 4 Sep 2018 21:19:09 +0000 (14:19 -0700)]
scsi: qla2xxx: Serialize mailbox request

For driver MBX submission, use mbox_busy to serialize request.  For Userspace
MBX submission, use optrom mutex to serialize request.

Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: qla2xxx: Update driver to version 10.00.00.09-k
Himanshu Madhani [Fri, 31 Aug 2018 18:24:39 +0000 (11:24 -0700)]
scsi: qla2xxx: Update driver to version 10.00.00.09-k

Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: qla2xxx: Terminate Plogi/PRLI if WWN is 0
Quinn Tran [Fri, 31 Aug 2018 18:24:38 +0000 (11:24 -0700)]
scsi: qla2xxx: Terminate Plogi/PRLI if WWN is 0

When driver receive PLOGI/PRLI from FW, the WWPN value will be provided.  If
it is not, then driver will terminate it.  The WWPN allows driver to locate
the session or create a new session.

Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: qla2xxx: Defer chip reset until target mode is enabled
Quinn Tran [Fri, 31 Aug 2018 18:24:37 +0000 (11:24 -0700)]
scsi: qla2xxx: Defer chip reset until target mode is enabled

For target mode, any chip reset triggered before target mode is enabled will
be held off until user is ready to enable.  This prevents the chip from
starting or running before it is intended.

Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: qla2xxx: Fix iIDMA error
Quinn Tran [Fri, 31 Aug 2018 18:24:36 +0000 (11:24 -0700)]
scsi: qla2xxx: Fix iIDMA error

When switch responds with error for Get Port Speed Command (GPSC), driver
should not proceed with telling FW about the speed of the remote port.

Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: qla2xxx: Remove all rports if fabric scan retry fails
Quinn Tran [Fri, 31 Aug 2018 18:24:35 +0000 (11:24 -0700)]
scsi: qla2xxx: Remove all rports if fabric scan retry fails

When all fabric scan retries fail, remove all RPorts, DMA resources for the
command. Otherwise we have stale Rports.

Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: qla2xxx: Force fw cleanup on ADISC error
Quinn Tran [Fri, 31 Aug 2018 18:24:34 +0000 (11:24 -0700)]
scsi: qla2xxx: Force fw cleanup on ADISC error

Turn ON logout_on_delete flag to make sure firmware resource for fcport is
cleaned up on ADISC error.

Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: qla2xxx: Turn off IOCB timeout timer on IOCB completion
Quinn Tran [Fri, 31 Aug 2018 18:24:33 +0000 (11:24 -0700)]
scsi: qla2xxx: Turn off IOCB timeout timer on IOCB completion

Turn off IOCB timeout timer on IOCB completion instead of turning it off in a
deferred task.  This prevent false alarm if the deferred task is stalled out.

Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: qla2xxx: Decrement login retry count for only plogi
Quinn Tran [Fri, 31 Aug 2018 18:24:32 +0000 (11:24 -0700)]
scsi: qla2xxx: Decrement login retry count for only plogi

Decrement login retry count only for plogi instead of number of attempts made
for login.

Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: qla2xxx: Move rport registration out of internal work_list
Quinn Tran [Fri, 31 Aug 2018 18:24:31 +0000 (11:24 -0700)]
scsi: qla2xxx: Move rport registration out of internal work_list

Currently, the rport registration is being called from a single work element
that is used to process QLA internal "work_list".  This work_list is meant for
quick and simple task (ie no sleep).  The Rport registration process sometime
can be delayed by upper layer.  This causes back pressure with the internal
queue where other jobs are unable to move forward.

This patch will schedule the registration process with a new work element
(fc_port.reg_work).  While the RPort is being registered, the current state of
the fcport will not move forward until the registration is done.  If the state
of the fabric has changed, a new field/next_disc_state will record the next
action on whether to 'DELETE' or 'Reverify the session/ADISC'.

Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: qla2xxx: Remove redundant check for fcport deletion
Quinn Tran [Fri, 31 Aug 2018 18:24:30 +0000 (11:24 -0700)]
scsi: qla2xxx: Remove redundant check for fcport deletion

Remove redundant check for fcport is deleted or being delete.  The same check
is already in the deletion routine.

Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: qla2xxx: Update rscn_rcvd field to more meaningful scan_needed
Quinn Tran [Fri, 31 Aug 2018 18:24:29 +0000 (11:24 -0700)]
scsi: qla2xxx: Update rscn_rcvd field to more meaningful scan_needed

Rename rscn_rcvd field to scan_needed to be more meaningful.

Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: qla2xxx: Use correct qpair for ABTS/CMD
Quinn Tran [Fri, 31 Aug 2018 18:24:28 +0000 (11:24 -0700)]
scsi: qla2xxx: Use correct qpair for ABTS/CMD

On Abort of initiator scsi command, the abort needs to follow the same qpair
as the the scsi command to prevent out of order processing.

Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: qla2xxx: Fix incorrect port speed being set for FC adapters
Himanshu Madhani [Fri, 31 Aug 2018 18:24:27 +0000 (11:24 -0700)]
scsi: qla2xxx: Fix incorrect port speed being set for FC adapters

Fixes: 6246b8a1d26c7c ("[SCSI] qla2xxx: Enhancements to support ISP83xx.")
Fixes: 1bb395485160d2 ("qla2xxx: Correct iiDMA-update calling conventions.")
Cc: <stable@vger.kernel.org>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: qla2xxx: Fix process response queue for ISP26XX and above
Quinn Tran [Fri, 31 Aug 2018 18:24:26 +0000 (11:24 -0700)]
scsi: qla2xxx: Fix process response queue for ISP26XX and above

This patch improves performance for 16G and above adapter by removing
additional call to process_response_queue().

[mkp: typo]

Cc: <stable@vger.kernel.org>
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: aic7xxx: Fix build using bare-metal toolchain
Sam Protsenko [Wed, 29 Aug 2018 17:00:15 +0000 (20:00 +0300)]
scsi: aic7xxx: Fix build using bare-metal toolchain

Bare-metal toolchains don't define __linux__, so aic7xxx build with
bare-metal toolchain is broken. This driver codebase used to be partially
shared with FreeBSD, but these days there is no point in keeping the
compatibility around. So let's just drop FreeBSD related code and get rid
of __linux__ checking in order to fix the build using bare-metal
toolchains.

Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: libfc: remove unnecessary condition check
Chengguang Xu [Mon, 27 Aug 2018 23:50:08 +0000 (07:50 +0800)]
scsi: libfc: remove unnecessary condition check

kmem_cache_destroy() can handle NULL pointer correctly, so there is no
need to check NULL pointer before calling kmem_cache_destroy()

Signed-off-by: Chengguang Xu <cgxu519@gmx.com>
Acked-by: Johannes Thumshirn <jth@kernel.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: lpfc: remove an unnecessary NULL check
Dan Carpenter [Thu, 23 Aug 2018 13:56:33 +0000 (16:56 +0300)]
scsi: lpfc: remove an unnecessary NULL check

Smatch complains about this code:

    drivers/scsi/lpfc/lpfc_scsi.c:1053 lpfc_get_scsi_buf_s4()
    warn: variable dereferenced before check 'lpfc_cmd' (see line 1039)

Fortunately the NULL check isn't required so I have removed it.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: 53c700: Fix spelling of 'NEGOTIATION'
Faisal Mehmood [Sat, 18 Aug 2018 18:42:14 +0000 (23:42 +0500)]
scsi: 53c700: Fix spelling of 'NEGOTIATION'

'NEGOTIATION' was misspelled as 'NEGOTATION'. Fixed it. It is a coding
style change which should have no impact on runtime execution of code.

Signed-off-by: Faisal Mehmood <f.m3hm00d@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: be2iscsi: remove unused variable dmsg
Colin Ian King [Thu, 16 Aug 2018 14:02:54 +0000 (15:02 +0100)]
scsi: be2iscsi: remove unused variable dmsg

Variable dmsg is not being used and is redundant and hence can be
removed.

Cleans up clang warning:
warning: variable 'dmsg' set but not used [-Wunused-but-set-variable]

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: aacraid: remove unused variables dev and cpu
Colin Ian King [Thu, 16 Aug 2018 13:33:20 +0000 (14:33 +0100)]
scsi: aacraid: remove unused variables dev and cpu

Variables dev and cpu are not being used and are redundant and hence can
be removed.

Cleans up clang warnings:
warning: variable 'dev' set but not used [-Wunused-but-set-variable]
warning: variable 'cpu' set but not used [-Wunused-but-set-variable]

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoscsi: raid_attrs: fix unused variable warning
Arnd Bergmann [Mon, 13 Aug 2018 22:27:10 +0000 (00:27 +0200)]
scsi: raid_attrs: fix unused variable warning

I ran into a new warning on randconfig kernels:

drivers/scsi/raid_class.c: In function 'raid_match':
drivers/scsi/raid_class.c:64:24: error: unused variable 'i' [-Werror=unused-variable]

This looks like a very old problem that for some reason was very hard to
run into, but it is very easy to fix, by replacing the incorrect #ifdef
with a simpler IS_ENABLED() check.

Fixes: fac829fdcaf4 ("[SCSI] raid_attrs: fix dependency problems")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
5 years agoLinux 4.19-rc1
Linus Torvalds [Sun, 26 Aug 2018 21:11:59 +0000 (14:11 -0700)]
Linux 4.19-rc1

5 years agoMerge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 26 Aug 2018 20:39:05 +0000 (13:39 -0700)]
Merge branch 'timers-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull timer update from Thomas Gleixner:
 "New defines for the compat time* types so they can be shared between
  32bit and 64bit builds. Not used yet, but merging them now allows the
  actual conversions to be merged through different maintainer trees
  without dependencies

  We still have compat interfaces for 32bit on 64bit even with the new
  2038 safe timespec/val variants because pointer size is different. And
  for the old style timespec/val interfaces we need yet another 'compat'
  interface for both 32bit native and 32bit on 64bit"

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  y2038: Provide aliases for compat helpers

5 years agoMerge branch 'ida-4.19' of git://git.infradead.org/users/willy/linux-dax
Linus Torvalds [Sun, 26 Aug 2018 18:48:42 +0000 (11:48 -0700)]
Merge branch 'ida-4.19' of git://git.infradead.org/users/willy/linux-dax

Pull IDA updates from Matthew Wilcox:
 "A better IDA API:

      id = ida_alloc(ida, GFP_xxx);
      ida_free(ida, id);

  rather than the cumbersome ida_simple_get(), ida_simple_remove().

  The new IDA API is similar to ida_simple_get() but better named.  The
  internal restructuring of the IDA code removes the bitmap
  preallocation nonsense.

  I hope the net -200 lines of code is convincing"

* 'ida-4.19' of git://git.infradead.org/users/willy/linux-dax: (29 commits)
  ida: Change ida_get_new_above to return the id
  ida: Remove old API
  test_ida: check_ida_destroy and check_ida_alloc
  test_ida: Convert check_ida_conv to new API
  test_ida: Move ida_check_max
  test_ida: Move ida_check_leaf
  idr-test: Convert ida_check_nomem to new API
  ida: Start new test_ida module
  target/iscsi: Allocate session IDs from an IDA
  iscsi target: fix session creation failure handling
  drm/vmwgfx: Convert to new IDA API
  dmaengine: Convert to new IDA API
  ppc: Convert vas ID allocation to new IDA API
  media: Convert entity ID allocation to new IDA API
  ppc: Convert mmu context allocation to new IDA API
  Convert net_namespace to new IDA API
  cb710: Convert to new IDA API
  rsxx: Convert to new IDA API
  osd: Convert to new IDA API
  sd: Convert to new IDA API
  ...

5 years agoMerge tag 'gcc-plugins-v4.19-rc1-fix' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 26 Aug 2018 18:41:08 +0000 (11:41 -0700)]
Merge tag 'gcc-plugins-v4.19-rc1-fix' of git://git./linux/kernel/git/kees/linux

Pull gcc plugin fix from Kees Cook:
 "Lift gcc test into Kconfig. This is for better behavior when the
  kernel is built with Clang, reported by Stefan Agner"

* tag 'gcc-plugins-v4.19-rc1-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  gcc-plugins: Disable when building under Clang

5 years agoMerge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 26 Aug 2018 18:25:21 +0000 (11:25 -0700)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull perf updates from Thomas Gleixner:
 "Kernel:
   - Improve kallsyms coverage
   - Add x86 entry trampolines to kcore
   - Fix ARM SPE handling
   - Correct PPC event post processing

  Tools:
   - Make the build system more robust
   - Small fixes and enhancements all over the place
   - Update kernel ABI header copies
   - Preparatory work for converting libtraceevnt to a shared library
   - License cleanups"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (100 commits)
  tools arch: Update arch/x86/lib/memcpy_64.S copy used in 'perf bench mem memcpy'
  tools arch x86: Update tools's copy of cpufeatures.h
  perf python: Fix pyrf_evlist__read_on_cpu() interface
  perf mmap: Store real cpu number in 'struct perf_mmap'
  perf tools: Remove ext from struct kmod_path
  perf tools: Add gzip_is_compressed function
  perf tools: Add lzma_is_compressed function
  perf tools: Add is_compressed callback to compressions array
  perf tools: Move the temp file processing into decompress_kmodule
  perf tools: Use compression id in decompress_kmodule()
  perf tools: Store compression id into struct dso
  perf tools: Add compression id into 'struct kmod_path'
  perf tools: Make is_supported_compression() static
  perf tools: Make decompress_to_file() function static
  perf tools: Get rid of dso__needs_decompress() call in __open_dso()
  perf tools: Get rid of dso__needs_decompress() call in symbol__disassemble()
  perf tools: Get rid of dso__needs_decompress() call in read_object_code()
  tools lib traceevent: Change to SPDX License format
  perf llvm: Allow passing options to llc in addition to clang
  perf parser: Improve error message for PMU address filters
  ...

5 years agoMerge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 26 Aug 2018 17:13:21 +0000 (10:13 -0700)]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull x86 fixes from Thomas Gleixner:

 - Correct the L1TF fallout on 32bit and the off by one in the 'too much
   RAM for protection' calculation.

 - Add a helpful kernel message for the 'too much RAM' case

 - Unbreak the VDSO in case that the compiler desides to use indirect
   jumps/calls and emits retpolines which cannot be resolved because the
   kernel uses its own thunks, which does not work for the VDSO. Make it
   use the builtin thunks.

 - Re-export start_thread() which was unexported when the 32/64bit
   implementation was unified. start_thread() is required by modular
   binfmt handlers.

 - Trivial cleanups

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/speculation/l1tf: Suggest what to do on systems with too much RAM
  x86/speculation/l1tf: Fix off-by-one error when warning that system has too much RAM
  x86/kvm/vmx: Remove duplicate l1d flush definitions
  x86/speculation/l1tf: Fix overflow in l1tf_pfn_limit() on 32bit
  x86/process: Re-export start_thread()
  x86/mce: Add notifier_block forward declaration
  x86/vdso: Fix vDSO build if a retpoline is emitted

5 years agoMerge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 26 Aug 2018 16:55:28 +0000 (09:55 -0700)]
Merge branch 'irq-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull irq update from Thomas Gleixner:
 "A small set of updats/fixes for the irq subsystem:

   - Allow GICv3 interrupts to be configured as wake-up sources to
     enable wakeup from suspend

   - Make the error handling of the STM32 irqchip init function work

   - A set of small cleanups and improvements"

* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  irqchip/gic-v3: Allow interrupt to be configured as wake-up sources
  irqchip/tango: Set irq handler and data in one go
  dt-bindings: irqchip: renesas-irqc: Document r8a774a1 support
  irqchip/s3c24xx: Remove unneeded comparison of unsigned long to 0
  irqchip/stm32: Fix init error handling
  irqchip/bcm7038-l1: Hide cpu offline callback when building for !SMP

5 years agoMerge branch 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 26 Aug 2018 16:47:00 +0000 (09:47 -0700)]
Merge branch 'locking-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull licking update from Thomas Gleixner:
 "Mark the switch cases which fall through to the next case with the
  proper comment so the fallthrough compiler checks can be enabled"

* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  futex: Mark expected switch fall-throughs

5 years agoMerge tag 'libnvdimm-for-4.19_dax-memory-failure' of gitolite.kernel.org:pub/scm...
Linus Torvalds [Sun, 26 Aug 2018 01:43:59 +0000 (18:43 -0700)]
Merge tag 'libnvdimm-for-4.19_dax-memory-failure' of gitolite.pub/scm/linux/kernel/git/nvdimm/nvdimm

Pull libnvdimm memory-failure update from Dave Jiang:
 "As it stands, memory_failure() gets thoroughly confused by dev_pagemap
  backed mappings. The recovery code has specific enabling for several
  possible page states and needs new enabling to handle poison in dax
  mappings.

  In order to support reliable reverse mapping of user space addresses:

   1/ Add new locking in the memory_failure() rmap path to prevent races
      that would typically be handled by the page lock.

   2/ Since dev_pagemap pages are hidden from the page allocator and the
      "compound page" accounting machinery, add a mechanism to determine
      the size of the mapping that encompasses a given poisoned pfn.

   3/ Given pmem errors can be repaired, change the speculatively
      accessed poison protection, mce_unmap_kpfn(), to be reversible and
      otherwise allow ongoing access from the kernel.

  A side effect of this enabling is that MADV_HWPOISON becomes usable
  for dax mappings, however the primary motivation is to allow the
  system to survive userspace consumption of hardware-poison via dax.
  Specifically the current behavior is:

     mce: Uncorrected hardware memory error in user-access at af34214200
     {1}[Hardware Error]: It has been corrected by h/w and requires no further action
     mce: [Hardware Error]: Machine check events logged
     {1}[Hardware Error]: event severity: corrected
     Memory failure: 0xaf34214: reserved kernel page still referenced by 1 users
     [..]
     Memory failure: 0xaf34214: recovery action for reserved kernel page: Failed
     mce: Memory error not recovered
     <reboot>

  ...and with these changes:

     Injecting memory failure for pfn 0x20cb00 at process virtual address 0x7f763dd00000
     Memory failure: 0x20cb00: Killing dax-pmd:5421 due to hardware memory corruption
     Memory failure: 0x20cb00: recovery action for dax page: Recovered

  Given all the cross dependencies I propose taking this through
  nvdimm.git with acks from Naoya, x86/core, x86/RAS, and of course dax
  folks"

* tag 'libnvdimm-for-4.19_dax-memory-failure' of gitolite.kernel.org:pub/scm/linux/kernel/git/nvdimm/nvdimm:
  libnvdimm, pmem: Restore page attributes when clearing errors
  x86/memory_failure: Introduce {set, clear}_mce_nospec()
  x86/mm/pat: Prepare {reserve, free}_memtype() for "decoy" addresses
  mm, memory_failure: Teach memory_failure() about dev_pagemap pages
  filesystem-dax: Introduce dax_lock_mapping_entry()
  mm, memory_failure: Collect mapping size in collect_procs()
  mm, madvise_inject_error: Let memory_failure() optionally take a page reference
  mm, dev_pagemap: Do not clear ->mapping on final put
  mm, madvise_inject_error: Disable MADV_SOFT_OFFLINE for ZONE_DEVICE pages
  filesystem-dax: Set page->index
  device-dax: Set page->index
  device-dax: Enable page_mapping()
  device-dax: Convert to vmf_insert_mixed and vm_fault_t

5 years agoMerge tag 'libnvdimm-for-4.19_misc' of gitolite.kernel.org:pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 26 Aug 2018 01:13:10 +0000 (18:13 -0700)]
Merge tag 'libnvdimm-for-4.19_misc' of gitolite.pub/scm/linux/kernel/git/nvdimm/nvdimm

Pull libnvdimm updates from Dave Jiang:
 "Collection of misc libnvdimm patches for 4.19 submission:

   - Adding support to read locked nvdimm capacity.

   - Change test code to make DSM failure code injection an override.

   - Add support for calculate maximum contiguous area for namespace.

   - Add support for queueing a short ARS when there is on going ARS for
     nvdimm.

   - Allow NULL to be passed in to ->direct_access() for kaddr and pfn
     params.

   - Improve smart injection support for nvdimm emulation testing.

   - Fix test code that supports for emulating controller temperature.

   - Fix hang on error before devm_memremap_pages()

   - Fix a bug that causes user memory corruption when data returned to
     user for ars_status.

   - Maintainer updates for Ross Zwisler emails and adding Jan Kara to
     fsdax"

* tag 'libnvdimm-for-4.19_misc' of gitolite.kernel.org:pub/scm/linux/kernel/git/nvdimm/nvdimm:
  libnvdimm: fix ars_status output length calculation
  device-dax: avoid hang on error before devm_memremap_pages()
  tools/testing/nvdimm: improve emulation of smart injection
  filesystem-dax: Do not request kaddr and pfn when not required
  md/dm-writecache: Don't request pointer dummy_addr when not required
  dax/super: Do not request a pointer kaddr when not required
  tools/testing/nvdimm: kaddr and pfn can be NULL to ->direct_access()
  s390, dcssblk: kaddr and pfn can be NULL to ->direct_access()
  libnvdimm, pmem: kaddr and pfn can be NULL to ->direct_access()
  acpi/nfit: queue issuing of ars when an uc error notification comes in
  libnvdimm: Export max available extent
  libnvdimm: Use max contiguous area for namespace size
  MAINTAINERS: Add Jan Kara for filesystem DAX
  MAINTAINERS: update Ross Zwisler's email address
  tools/testing/nvdimm: Fix support for emulating controller temperature
  tools/testing/nvdimm: Make DSM failure code injection an override
  acpi, nfit: Prefer _DSM over _LSR for namespace label reads
  libnvdimm: Introduce locked DIMM capacity support

5 years agoMerge tag 'armsoc-late' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Linus Torvalds [Sat, 25 Aug 2018 21:12:36 +0000 (14:12 -0700)]
Merge tag 'armsoc-late' of git://git./linux/kernel/git/arm/arm-soc

Pull ARM SoC late updates from Olof Johansson:
 "A couple of late-merged changes that would be useful to get in this
  merge window:

   - Driver support for reset of audio complex on Meson platforms. The
     audio driver went in this merge window, and these changes have been
     in -next for a while (just not in our tree).

   - Power management fixes for IOMMU on Rockchip platforms, getting
     closer to kexec working on them, including Chromebooks.

   - Another pass updating "arm,psci" -> "psci" for some properties that
     have snuck in since last time it was done"

* tag 'armsoc-late' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  iommu/rockchip: Move irq request past pm_runtime_enable
  iommu/rockchip: Handle errors returned from PM framework
  arm64: rockchip: Force CONFIG_PM on Rockchip systems
  ARM: rockchip: Force CONFIG_PM on Rockchip systems
  arm64: dts: Fix various entry-method properties to reflect documentation
  reset: imx7: Fix always writing bits as 0
  reset: meson: add meson audio arb driver
  reset: meson: add dt-bindings for meson-axg audio arb