Add host reset interface to make it easier for testing the host reset
feature.
Signed-off-by: NXiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: NJohn Garry <john.garry@huawei.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Currently the FC-NVMe driver is leverating the SCSI FC transport class to
access the remote ports. Which means that all FC-NVMe remote ports will be
visible to the fc transport layer, but due to missing definitions the port
roles will always be 'unknown'.  This patch adds the missing definitions to
the fc transport class to that the port roles are correctly displayed.
Signed-off-by: NHannes Reinecke <hare@suse.de>
Reviewed-by: NJames Smart <james.smart@broadcom.com>
Reviewed-by: NEwan D. Milne <emilne@redhat.com>
Reviewed-by: NGiridhar Malavali <gmalavali@marvell.com>
Reviewed-by: NHimanshu Madhani <hmadhani@marvell.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

The error return path via label rel_resource checks for a non-null skb
before free'ing it.  However, skb is always null at this exit path, so the
null check and the free are redundant and can be removed.  Removing this
allows the original goto's to rel_resource to be cleaned up; the first can
be replaced by a return of -EINVAL, the second can be replaced by a more
appropriate -ENOMEM return and fix a memory leak by freeing csk->atid.

Addresses-Coverity: ("Logically Dead Code")
Signed-off-by: NColin Ian King <colin.king@canonical.com>
Reviewed-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Only include those header files that are needed by the code in this source
file.

[mkp: include build fix from Bart for SPARC]

Cc: Himanshu Madhani <hmadhani@marvell.com>
Cc: Giridhar Malavali <gmalavali@marvell.com>
Signed-off-by: NBart Van Assche <bvanassche@acm.org>
Acked-by: NHimanshu Madhani <hmadhani@marvell.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

If scsi cmd sglist is not suitable for DDP then csiostor driver uses
preallocated buffers for DDP, because of this data copy is required from
DDP buffer to scsi cmd sglist before calling ->scsi_done().
Signed-off-by: NVarun Prakash <varun@chelsio.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Make sure that resources are only unregistered after the users of these
resources have been unregistered. Only unregister the character device if
registration of it succeeded.

Cc: Himanshu Madhani <hmadhani@marvell.com>
Cc: Giridhar Malavali <gmalavali@marvell.com>
Signed-off-by: NBart Van Assche <bvanassche@acm.org>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

If module initialization fails after the character device has been
registered, unregister the character device. Additionally, avoid
duplicating error path code.

Cc: Himanshu Madhani <hmadhani@marvell.com>
Cc: Giridhar Malavali <giridhar.malavali@qlogic.com>
Fixes: 6a03b4cd ("[SCSI] qla2xxx: Add char device to increase driver use count") # v2.6.35.
Signed-off-by: NBart Van Assche <bvanassche@acm.org>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

This patch makes the code easier to read but does not change any
functionality.

Cc: Himanshu Madhani <hmadhani@marvell.com>
Cc: Giridhar Malavali <gmalavali@marvell.com>
Signed-off-by: NBart Van Assche <bvanassche@acm.org>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Make qla2x00_process_response_queue() easier to read by splitting this
function. This patch does not change any functionality.

Cc: Himanshu Madhani <hmadhani@marvell.com>
Cc: Giridhar Malavali <gmalavali@marvell.com>
Signed-off-by: NBart Van Assche <bvanassche@acm.org>
Acked-by: NHimanshu Madhani <hmadhani@marvell.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Move the SCSI host template definition after the definition of the
functions that it references. Remove the forward declarations that became
unnecessary by that change. This patch does not change any functionality.

Cc: Himanshu Madhani <hmadhani@marvell.com>
Cc: Giridhar Malavali <gmalavali@marvell.com>
Signed-off-by: NBart Van Assche <bvanassche@acm.org>
Acked-by: NHimanshu Madhani <hmadhani@marvell.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

This patch avoids that sparse complains that a declaration is missing.

Cc: Himanshu Madhani <hmadhani@marvell.com>
Cc: Giridhar Malavali <gmalavali@marvell.com>
Signed-off-by: NBart Van Assche <bvanassche@acm.org>
Acked-by: NHimanshu Madhani <hmadhani@marvell.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Make the code easier to read by avoiding to use a hard-coded constant. This
patch does not change any functionality.

Cc: Himanshu Madhani <hmadhani@marvell.com>
Cc: Giridhar Malavali <gmalavali@marvell.com>
Signed-off-by: NBart Van Assche <bvanassche@acm.org>
Acked-by: NHimanshu Madhani <hmadhani@marvell.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Since qla2xxx_queuecommand() no longer takes the SCSI host lock, remove a
comment that refers to the host lock.

Cc: Himanshu Madhani <hmadhani@marvell.com>
Cc: Giridhar Malavali <gmalavali@marvell.com>
Signed-off-by: NBart Van Assche <bvanassche@acm.org>
Acked-by: NHimanshu Madhani <hmadhani@marvell.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Make qla2x00_get_host_fabric_name() slightly faster by changing a stack
array into a static array. Declare that array const now that the
wwn_to_u64() argument pointer has been declared const.

Cc: Himanshu Madhani <hmadhani@marvell.com>
Cc: Giridhar Malavali <gmalavali@marvell.com>
Signed-off-by: NBart Van Assche <bvanassche@acm.org>
Acked-by: NHimanshu Madhani <hmadhani@marvell.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

There is a spelling mistake in a ql_log message. Fix it.
Signed-off-by: NColin Ian King <colin.king@canonical.com>
Acked-by: NHimanshu Madhani <hmadhani@marvell.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

This patch adds support to recognize FPIN ELS's that are received.  When
one is received, the fc transport will be called to handle the the FPIN.
Signed-off-by: NJames Smart <jsmart2021@gmail.com>
Reviewed-by: NEwan D. Milne <emilne@redhat.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Add a new event type - an FPIN event.

Add a new routine, fc_host_fpin_rcv(), that lldd's call when an FPIN is
received. The routine processes the fpin payload.  For now, the routine
only logs an FPIN event.
Signed-off-by: NMuneendra <muneendra.kumar@broadcom.com>
Signed-off-by: NJames Smart <jsmart2021@gmail.com>
Reviewed-by: NEwan D. Milne <emilne@redhat.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

There are two routines generating transport events that do the same thing
with only a couple of values set differently.

Refactor so there's a single routine doing the netlink operations to send
the event. All the differences are passed as arguments. Export the symbol
so the generic routine can be called by llds.

Modify the existing two event routines to use the helper.
Signed-off-by: NJames Smart <jsmart2021@gmail.com>
Reviewed-by: NEwan D. Milne <emilne@redhat.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

This patch avoids that the following compiler warning is reported with
CONFIG_NVME_FC=n:

drivers/scsi/lpfc/lpfc_nvme.c:2140:1: warning: 'lpfc_nvme_lport_unreg_wait' defined but not used [-Wunused-function]
 lpfc_nvme_lport_unreg_wait(struct lpfc_vport *vport,
 ^~~~~~~~~~~~~~~~~~~~~~~~~~

Fixes: 3999df75 ("scsi: lpfc: Declare local functions static")
Cc: James Smart <james.smart@broadcom.com>
Signed-off-by: NBart Van Assche <bvanassche@acm.org>
Acked-by: NJames Smart <james.smart@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

The memory return by kzalloc() has already be set to zero, so remove
useless memset(0).
Signed-off-by: NYueHaibing <yuehaibing@huawei.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

This patch adds an additional PHY initialization, required for M31 PHY when
used with Cadence UFS HC.  A new compatible string has been added for this
purpose.

[mkp: nuke superfluous status return]
Signed-off-by: NJan Kotas <jank@cadence.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

The pointer value is initialized as &hba->vreg_info, and it's never
changed. It's not necessary to check the pointer is null or not.
Signed-off-by: NZeng Guangyue <zengguangyue@hisilicon.com>
Acked-by: NTomas Winkler <tomas.winkler@intel.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

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

drivers/scsi/qedf/qedf_fip.c: In function 'qedf_fcoe_send_vlan_req':
drivers/scsi/qedf/qedf_fip.c:22:6: warning:
 variable 'fr_len' set but not used [-Wunused-but-set-variable]

It's never used since introduction and can be removed.
Signed-off-by: NYueHaibing <yuehaibing@huawei.com>
Acked-by: NManish Rangankar <mrangankar@marvell.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Rename the functions pm8001_chip_is_our_interupt,
pm80xx_chip_is_our_interupt and function pointer is_our_interrupt to fix
spelling mistakes.
Signed-off-by: NColin Ian King <colin.king@canonical.com>
Acked-by: NJack Wang <jinpu.wang@cloud.ionos.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

When macro PM8001_USE_MSIX is defined there are redundant dead code calls
to pm8001_chip_intx_interrupt_{enable|disable} and pm8001_cr32.

Clean this up for the defined PM8001_USE_MSIX and undefined
PM8001_USE_MSIX cases.

[mkp: squashed two patches]
Signed-off-by: NColin Ian King <colin.king@canonical.com>
Acked-by: NJack Wang <jinpu.wang@cloud.ionos.com>
Reviewed-by: NMukesh Ojha <mojha@codeaurora.org>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Signed-off-by: NHimanshu Madhani <hmadhani@marvell.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

This patch converts driver wait time from using msleep to
wair_event_timeout to prevent race condition.
Signed-off-by: NGiridhar Malavali <gmalavali@marvell.com>
Signed-off-by: NHimanshu Madhani <hmadhani@marvell.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

This patch allows driver to unload using "modprobe -r" when FC-NVMe LUNs
are connected.
Signed-off-by: NGiridhar Malavali <gmalavali@marvell.com>
Signed-off-by: NHimanshu Madhani <hmadhani@marvell.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

This patch removes redundant qla2x00_abort_all_cmds() during driver unload.
Signed-off-by: NAnil Gurumurthy <agurumurthy@marvell.com>
Signed-off-by: NHimanshu Madhani <hmadhani@marvell.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

This patch sets remote_port_devloss value to 0. This indicates to FC-NVMe
transport that driver is unloading and transport should not retry.

Fixes: e476fe8a ("scsi: qla2xxx: Fix unload when NVMe devices are configured")
Cc: stable@vger.kernel.org
Signed-off-by: NGiridhar Malavali <gmalavali@marvell.com>
Signed-off-by: NHimanshu Madhani <hmadhani@marvell.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Clean up fcport list and loopid in one place and iterate through for loop.
Signed-off-by: NQuinn Tran <qtran@marvell.com>
Signed-off-by: NHimanshu Madhani <hmadhani@marvell.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Add mutex protection to prevent driver from freeing the FW dump buffer
while the extraction is in progress.

[mkp: commit desc]
Signed-off-by: NQuinn Tran <quinn.tran@cavium.com>
Signed-off-by: NHimanshu Madhani <hmadhani@marvell.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

If fw dump buffer size changes and there is an existing fw dump, then save
the old dump in the newly allocated buffer.
Signed-off-by: NQuinn Tran <quinn.tran@cavium.com>
Signed-off-by: NHimanshu Madhani <hmadhani@marvell.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Recent ISPs have larger and more complex flash-write semantics
(secure-access and signing). The BSG interfaces support these semantics for
all ISPs and is exclusively used by QLogic user-space tools. Limit
flash-write operations to ISPs <= 25xx.
Signed-off-by: NAndrew Vasquez <andrewv@marvell.com>
Signed-off-by: NHimanshu Madhani <hmadhani@marvell.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Commit e6f77540 ("scsi: qla2xxx: Fix an integer overflow in sysfs
code") incorrectly set 'optrom_region_size' to 'start+size', which can
overflow option-rom boundaries when 'start' is non-zero.  Continue setting
optrom_region_size to the proper adjusted value of 'size'.

Fixes: e6f77540 ("scsi: qla2xxx: Fix an integer overflow in sysfs code")
Cc: stable@vger.kernel.org
Signed-off-by: NAndrew Vasquez <andrewv@marvell.com>
Signed-off-by: NHimanshu Madhani <hmadhani@marvell.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Abort thread wakeups, on some wqe types, are not happening.  The thread
wakeup logic is dependent upon the LPFC_DRIVER_ABORTED flag. However, on
these wqes, the completion handler running prior to the io completion
routine ends up clearing the flag.

Rework the wakeup logic to look at a non-null waitq element which must be
set if the abort thread is waiting. This is reverting the change in the
indicated patch.

Fixes: c2017260 ("scsi: lpfc: Rework locking on SCSI io completion")
Signed-off-by: NDick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: NJames Smart <jsmart2021@gmail.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Reduce the default VMbus channel ring buffer size for storvsc SCSI devices
from 1 Mbyte to 128 Kbytes. Measurements show that ring buffer sizes above
128 Kbytes do not increase performance even at very high IOPS rates, so
don't waste the memory. Also remove the dependence on PAGE_SIZE, since the
ring buffer size should not change on architectures where PAGE_SIZE is not
4 Kbytes.
Signed-off-by: NMichael Kelley <mikelley@microsoft.com>
Reviewed-by: NHaiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

When the number of sub-channels offered by Hyper-V is >= the number of CPUs
in the VM, calculate the correct number of sub-channels.  The current code
produces one too many.

This scenario arises only when the number of CPUs is artificially
restricted (for example, with maxcpus=<n> on the kernel boot line), because
Hyper-V normally offers a sub-channel count < number of CPUs.  While the
current code doesn't break, the extra sub-channel is unbalanced across the
CPUs (for example, a total of 5 channels on a VM with 4 CPUs).
Signed-off-by: NMichael Kelley <mikelley@microsoft.com>
Reviewed-by: NVitaly Kuznetsov <vkuznets@redhat.com>
Reviewed-by: NLong Li <longli@microsoft.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Blacklist "Universal Xport" LUN. It's used for in-band storage array
management.  Also add model to the rdac dh family.

Cc: Martin Wilck <mwilck@suse.com>
Cc: Hannes Reinecke <hare@suse.de>
Cc: NetApp RDAC team <ng-eseries-upstream-maintainers@netapp.com>
Cc: Christophe Varoqui <christophe.varoqui@opensvc.com>
Cc: James E.J. Bottomley <jejb@linux.vnet.ibm.com>
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Cc: SCSI ML <linux-scsi@vger.kernel.org>
Cc: DM ML <dm-devel@redhat.com>
Signed-off-by: NXose Vazquez Perez <xose.vazquez@gmail.com>
Reviewed-by: NMartin Wilck <mwilck@suse.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

With FC-NVMe enabled, driver does not support T10 DIF/DIX.  This patch
disables T10-PI information when ql2xnvmeenable is set.
Signed-off-by: NGiridhar Malavali <gmalavali@marvell.com>
Signed-off-by: NHimanshu Madhani <hmadhani@marvell.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>