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Link: https://lore.kernel.org/r/157048753592.11757.3634142461093493860.stgit@brunhilda
Reviewed-by: Scott Benesh <scott.benesh@microsemi.com>
Reviewed-by: Gerry Morong <gerry.morong@microsemi.com>
Signed-off-by: Don Brace <don.brace@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Formatting changes, no functional changes.
Link: https://lore.kernel.org/r/157048753005.11757.2228541207280057256.stgit@brunhilda
Reviewed-by: Scott Benesh <scott.benesh@microsemi.com>
Reviewed-by: Scott Teel <scott.teel@microsemi.com>
Signed-off-by: Kevin Barnett <kevin.barnett@microsemi.com>
Signed-off-by: Don Brace <don.brace@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Removed some unused manifest constants.
Link: https://lore.kernel.org/r/157048752420.11757.3464951542864727227.stgit@brunhilda
Reviewed-by: Scott Benesh <scott.benesh@microsemi.com>
Reviewed-by: Scott Teel <scott.teel@microsemi.com>
Signed-off-by: Kevin Barnett <kevin.barnett@microsemi.com>
Signed-off-by: Don Brace <don.brace@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Obtain the unique IDs from the RLL and RPL instead of VPD page 83h.
Link: https://lore.kernel.org/r/157048751833.11757.11996314786914610803.stgit@brunhilda
Reviewed-by: Scott Benesh <scott.benesh@microsemi.com>
Reviewed-by: Scott Teel <scott.teel@microsemi.com>
Signed-off-by: Kevin Barnett <kevin.barnett@microsemi.com>
Signed-off-by: Don Brace <don.brace@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Link: https://lore.kernel.org/r/157048751247.11757.1727592925624138646.stgit@brunhilda
Reviewed-by: Scott Benesh <scott.benesh@microsemi.com>
Reviewed-by: Scott Teel <scott.teel@microsemi.com>
Signed-off-by: Kevin Barnett <kevin.barnett@microsemi.com>
Signed-off-by: Don Brace <don.brace@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Link: https://lore.kernel.org/r/157048750649.11757.7811056360633694725.stgit@brunhilda
Reviewed-by: Scott Benesh <scott.benesh@microsemi.com>
Reviewed-by: Scott Teel <scott.teel@microsemi.com>
Signed-off-by: Kevin Barnett <kevin.barnett@microsemi.com>
Signed-off-by: Don Brace <don.brace@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Add support for a timeout on LUN resets.
Link: https://lore.kernel.org/r/157048750055.11757.9689400788261610618.stgit@brunhilda
Reviewed-by: Scott Benesh <scott.benesh@microsemi.com>
Reviewed-by: Scott Teel <scott.teel@microsemi.com>
Reviewed-by: Kevin Barnett <kevin.barnett@microsemi.com>
Signed-off-by: Murthy Bhat <Murthy.Bhat@microsemi.com>
Signed-off-by: Don Brace <don.brace@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Add timeout field in RAID IU.
Link: https://lore.kernel.org/r/157048749461.11757.10013040278241807855.stgit@brunhilda
Reviewed-by: Scott Benesh <scott.benesh@microsemi.com>
Reviewed-by: Scott Teel <scott.teel@microsemi.com>
Reviewed-by: Kevin Barnett <kevin.barnett@microsemi.com>
Signed-off-by: koshyaji <ajish.koshy@microsemi.com>
Signed-off-by: Don Brace <don.brace@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Use sas_phy_delete rather than sas_phy_free which, according to
comments, should not be called for PHYs that have been set up
successfully.
Link: https://lore.kernel.org/r/157048748876.11757.17773443136670011786.stgit@brunhilda
Reviewed-by: Scott Benesh <scott.benesh@microsemi.com>
Reviewed-by: Scott Teel <scott.teel@microsemi.com>
Reviewed-by: Kevin Barnett <kevin.barnett@microsemi.com>
Signed-off-by: Murthy Bhat <Murthy.Bhat@microsemi.com>
Signed-off-by: Don Brace <don.brace@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Link: https://lore.kernel.org/r/157048748297.11757.3872221216800537383.stgit@brunhilda
Reviewed-by: Scott Benesh <scott.benesh@microsemi.com>
Reviewed-by: Scott Teel <scott.teel@microsemi.com>
Signed-off-by: Kevin Barnett <kevin.barnett@microsemi.com>
Signed-off-by: Don Brace <don.brace@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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This line is indented too far so it's a bit confusing.
Link: https://lore.kernel.org/r/20191004100615.GA823@mwanda
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Fix sparse warnings:
drivers/scsi/lpfc/lpfc_nportdisc.c:290:1: warning: symbol 'lpfc_defer_pt2pt_acc' was not declared. Should it be static?
Link: https://lore.kernel.org/r/1570183477-137273-1-git-send-email-zhengbin13@huawei.com
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: zhengbin <zhengbin13@huawei.com>
Reviewed-by: Dick Kennedy <dick.kennedy@broadcom.com>
Reviewed-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Link: https://lore.kernel.org/r/20190912180918.6436-15-hmadhani@marvell.com
Signed-off-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Move messages to verbose logging for scan thread.
Link: https://lore.kernel.org/r/20190912180918.6436-14-hmadhani@marvell.com
Signed-off-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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For MPI heartbeat stop Async Event, this patch would capture MPI FW dump
and chip reset. FW will tell which function to capture FW dump for.
Link: https://lore.kernel.org/r/20190912180918.6436-13-hmadhani@marvell.com
Reviewed-by: Laurence Oberman <loberman@redhat.com>
Signed-off-by: Quinn Tran <qutran@marvell.com>
Signed-off-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Add mailbox timeout checkout for ISP 27xx/28xx during FW dump procedure.
Without the timeout check, hardware lock can be held for long period. This
patch would shorten the dump procedure if a timeout condition is
encountered.
Link: https://lore.kernel.org/r/20190912180918.6436-12-hmadhani@marvell.com
Reviewed-by: Laurence Oberman <loberman@redhat.com>
Signed-off-by: Quinn Tran <qutran@marvell.com>
Signed-off-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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During driver unload, the remove flag will be set for all
scsi_qla_host/NPIV. This allows each NPIV to see the flag instead of
reaching for base_vha to search for it.
Link: https://lore.kernel.org/r/20190912180918.6436-11-hmadhani@marvell.com
Signed-off-by: Quinn Tran <qutran@marvell.com>
Signed-off-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Add error handling logic to ELS Passthrough relating to NVME devices.
Current code does not parse error code to take proper recovery action,
instead it re-logins with the same login parameters that encountered the
error. Ex: nport handle collision.
Link: https://lore.kernel.org/r/20190912180918.6436-10-hmadhani@marvell.com
Signed-off-by: Quinn Tran <qutran@marvell.com>
Signed-off-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Some storage arrays advertise FCP LUNs and NVMe namespaces behind the same
WWN. The driver now offers a user option by way of NVRAM parameter to
allow users to choose, on a per port basis, the kind of FC-4 type they
would like to prioritize for login.
Link: https://lore.kernel.org/r/20190912180918.6436-9-hmadhani@marvell.com
Signed-off-by: Michael Hernandez <mhernandez@marvell.com>
Signed-off-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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The qla2xxx driver updates for 5.5 depend on the fixes queued for
5.4.
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Fix sparse warning:
drivers/scsi/bfa/bfad.c:1491:1: warning:
symbol 'restart_bfa' was not declared. Should it be static?
Link: https://lore.kernel.org/r/20190930094327.46836-1-yuehaibing@huawei.com
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Since 'commit fc8d0590d914 ("libcxgbi: Add ipv6 api to driver")' was
introduced, there is no call to csk_print_port() and csk_print_ip() is
made.
Hence kernel build with clang complains below message:
drivers/scsi/cxgbi/libcxgbi.c:2287:19: warning: unused function 'csk_print_port' [-Wunused-function]
static inline int csk_print_port(struct cxgbi_sock *csk, char *buf)
^
drivers/scsi/cxgbi/libcxgbi.c:2298:19: warning: unused function 'csk_print_ip' [-Wunused-function]
static inline int csk_print_ip(struct cxgbi_sock *csk, char *buf)
^
Remove csk_print_port() and csk_print_ip() to stop warning.
Link: https://lore.kernel.org/r/20190924093716.GA78230@LGEARND20B15
Signed-off-by: Austin Kim <austindh.kim@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Add sysfs attributes for the ATA information page and Supported VPD Pages
page.
Link: https://lore.kernel.org/r/20190926162216.56591-1-ryanattard@ryanattard.info
Signed-off-by: Ryan Attard <ryanattard@ryanattard.info>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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There are some statements that are indented too deeply, remove the
extraneous tabs and rejoin split lines.
Link: https://lore.kernel.org/r/20190927095840.26377-1-colin.king@canonical.com
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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The goto statement is indented incorrectly, remove the extraneous tab.
Link: https://lore.kernel.org/r/20190926115716.3698-1-colin.king@canonical.com
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Couple of users had requested to print the SCSI command age along with
command failure errors. This is a small change, but allows users to get
more important information about the command that was failed, it would help
the users in debugging the command failures:
Link: https://lore.kernel.org/r/20190926052501.GA8352@machine1
Signed-off-by: Milan P. Gandhi <mgandhi@redhat.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Add qedf_get_host_port_id() to the transport template.
The fc_transport_template initializes the port_id member to the default
value of -1. The new getter ensures that the sysfs entry shows the current
value and not the default one, e.g by using 'lsscsi -H -t'
Link: https://lore.kernel.org/r/20190924072906.23737-1-dwagner@suse.de
Signed-off-by: Daniel Wagner <dwagner@suse.de>
Acked-by: Saurav Kashyap <skashyap@marvell.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Enable auto suspend capability in MediaTek UFS driver.
Link: https://lore.kernel.org/r/1568649411-5127-4-git-send-email-stanley.chu@mediatek.com
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Rework from previous work by:
Sujit Reddy Thumma <sthumma@codeaurora.org>
Override auto suspend tunables for UFS device LUNs during initialization so
as to efficiently manage background operations and the power consumption.
Link: https://lore.kernel.org/r/1568649411-5127-3-git-send-email-stanley.chu@mediatek.com
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Reviewed-by: Bean Huo <beanhuo@micron.com>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Rework from previous work by:
Sujit Reddy Thumma <sthumma@codeaurora.org>
Until now the scsi mid-layer forbids runtime suspend till userspace enables
it. This is mainly to quarantine some disks with broken runtime power
management or have high latencies executing suspend resume callbacks. If
the userspace doesn't enable the runtime suspend the underlying hardware
will be always on even when it is not doing any useful work and thus
wasting power.
Some low-level drivers for the controllers can efficiently use runtime
power management to reduce power consumption and improve battery life.
Allow runtime suspend parameters override within the LLD itself instead of
waiting for userspace to control the power management.
Link: https://lore.kernel.org/r/1568649411-5127-2-git-send-email-stanley.chu@mediatek.com
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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There is a spelling mistake in literal string. Fix it.
Link: https://lore.kernel.org/r/20190916091706.32268-1-colin.king@canonical.com
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Fix several spelling typos in comments in csio_hw.c.
Link: https://lore.kernel.org/r/20190912172546.16489-1-arkadiusz@drabczyk.org
Signed-off-by: Arkadiusz Drabczyk <arkadiusz@drabczyk.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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In bfad_im_get_stats if bfa_port_get_stats fails, allocated memory needs to
be released.
Link: https://lore.kernel.org/r/20190910234417.22151-1-navid.emamdoost@gmail.com
Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Simplify this function implementation by using a known function.
Generated by: scripts/coccinelle/api/ptr_ret.cocci
[mkp: applied by hand]
Link: https://lore.kernel.org/r/9e667f19-434e-ed30-78cb-9ddc6323c51e@web.de
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Don't populate the array setup_attrs on the stack but instead make it
static const. Makes the object code smaller by 180 bytes.
Before:
text data bss dec hex filename
2140 224 0 2364 93c drivers/scsi/ufs/ufshcd-dwc.o
After:
text data bss dec hex filename
1863 320 0 2183 887 drivers/scsi/ufs/ufshcd-dwc.o
(gcc version 9.2.1, amd64)
Link: https://lore.kernel.org/r/20190906170104.10450-1-colin.king@canonical.com
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Don't populate the array 'options' on the stack but instead make it static
const. Makes the object code smaller by 143 bytes.
Before:
text data bss dec hex filename
94483 11272 1184 106939 1a1bb drivers/scsi/ips.o
After:
text data bss dec hex filename
94244 11368 1184 106796 1a12c drivers/scsi/ips.o
(gcc version 9.2.1, amd64)
Link: https://lore.kernel.org/r/20190906164522.5644-1-colin.king@canonical.com
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Don't populate the array dev_cmd_err on the stack but instead make it
static const. Makes the object code smaller by 80 bytes.
Before:
text data bss dec hex filename
21461 1564 0 23025 59f1 drivers/scsi/fnic/vnic_dev.o
After:
text data bss dec hex filename
21318 1628 0 22946 59a2 drivers/scsi/fnic/vnic_dev.o
(gcc version 9.2.1, amd64)
Link: https://lore.kernel.org/r/20190906163945.3889-1-colin.king@canonical.com
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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The variable rc is being initialized with a value that is never read and is
being re-assigned a little later on. The assignment is redundant and hence
can be removed.
Link: https://lore.kernel.org/r/20190905135017.23772-1-colin.king@canonical.com
Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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The pointer host is being initialized with a value that is never read and
is being re-assigned a little later on. The assignment is redundant and
hence can be removed.
Link: https://lore.kernel.org/r/20190905134229.21194-1-colin.king@canonical.com
Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Fixes gcc '-Wunused-but-set-variable' warning:
drivers/scsi/smartpqi/smartpqi_init.c: In function 'pqi_driver_version_show':
drivers/scsi/smartpqi/smartpqi_init.c:6164:24: warning:
variable 'ctrl_info' set but not used [-Wunused-but-set-variable]
commit 6d90615f1346 ("scsi: smartpqi: add sysfs entries") added it but
it was never used. Also remove variable 'shost'.
[mkp: commit desc]
Link: https://lore.kernel.org/r/20190831130348.20552-1-yuehaibing@huawei.com
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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There is a statement that is indented one level too deeply, remove the tab,
re-join broken line and remove some empty lines.
Link: https://lore.kernel.org/r/20190831073903.7834-1-colin.king@canonical.com
Addresses-Coverity: ("Indentation does not match nesting")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Bump mpt3sas driver version to 32.100.00.00
Link: https://lore.kernel.org/r/1568379890-18347-14-git-send-email-sreekanth.reddy@broadcom.com
Signed-off-by: Sreekanth Reddy <sreekanth.reddy@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Load driver with module parameter "max_msix_vectors". Value provided in
module parameter is not used by mpt3sas driver. Driver loads with max
controller supported MSI-X value.
In _base_alloc_irq_vectors use reply_queue_count which is determined using
user provided msix value insted of ioc->msix_vector_count which tells max
supported msix value of the controller.
Link: https://lore.kernel.org/r/1568379890-18347-13-git-send-email-sreekanth.reddy@broadcom.com
Signed-off-by: Sreekanth Reddy <sreekanth.reddy@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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If any faulty application issues an NVMe Encapsulated commands to HBA which
doesn't support NVMe protocol then driver should return the command as
invalid with the following message.
"HBA doesn't support NVMe. Rejecting NVMe Encapsulated request."
Otherwise below page fault kernel panic will be observed while building the
PRPs as there is no PRP pools allocated for the HBA which doesn't support
NVMe drives.
RIP: 0010:_base_build_nvme_prp+0x3b/0xf0 [mpt3sas]
Call Trace:
_ctl_do_mpt_command+0x931/0x1120 [mpt3sas]
_ctl_ioctl_main.isra.11+0xa28/0x11e0 [mpt3sas]
? prepare_to_wait+0xb0/0xb0
? tty_ldisc_deref+0x16/0x20
_ctl_ioctl+0x1a/0x20 [mpt3sas]
do_vfs_ioctl+0xaa/0x620
? vfs_read+0x117/0x140
ksys_ioctl+0x67/0x90
__x64_sys_ioctl+0x1a/0x20
do_syscall_64+0x60/0x190
entry_SYSCALL_64_after_hwframe+0x44/0xa9
[mkp: tweaked error string]
Link: https://lore.kernel.org/r/1568379890-18347-12-git-send-email-sreekanth.reddy@broadcom.com
Signed-off-by: Sreekanth Reddy <sreekanth.reddy@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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The firmware image layout has been changed for Aero controllers. All
compatible HBAs have to get Firmware Package version from Component Image
Header layout.
The Signature field in FW header is set to 0xEB000042 for products
compatible with Component Image Header.
For compatible controllers, driver fetches firmware package version from
ApplicationSpecific field of Component Image Header.
Link: https://lore.kernel.org/r/1568379890-18347-11-git-send-email-sreekanth.reddy@broadcom.com
Signed-off-by: Sreekanth Reddy <sreekanth.reddy@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Return the diag buffer release command with -EINVAL status if the buffer is
already released.
Link: https://lore.kernel.org/r/1568379890-18347-10-git-send-email-sreekanth.reddy@broadcom.com
Signed-off-by: Sreekanth Reddy <sreekanth.reddy@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Added a new status flag named MPT3_DIAG_BUFFER_IS_APP_OWNED and it will set
whenever application registers the diag buffer & it will be cleared when
application unregisters the buffer.
When this flag is enabled, and if application issues diag buffer register
command without releasing the buffer, then register command will be failed
with -EINVAL status by saying that this buffer is already registered by the
application.
When user issues a trace buffer register command through sysfs parameter,
and if trace buffer is in released stated but not yet unregistered by the
application which was owning it, then driver will unregister the buffer by
itself and freshly register the 1MB sized trace buffer with the HBA
firmware.
Link: https://lore.kernel.org/r/1568379890-18347-9-git-send-email-sreekanth.reddy@broadcom.com
Signed-off-by: Sreekanth Reddy <sreekanth.reddy@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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The diag buffer which is allocated during driver load time or through sysfs
parameter is marked as driver allocated diag buffer.
MPT3_DIAG_BUFFER_IS_DRIVER_ALLOCATED bit will be set for this buffer.
This buffer won't be de-allocated even when application issues unregister
command, driver just clears the registered status bit. Same buffer will be
reused while re-registering the same diag buffer type by any application.
While re-registering the same diag buffer type application has to register
with the same size that the buffer was allocated during driver load
time. This buffer size can be read by the application by issuing diag
'query' command.
This always makes sure that the memory is available for applications for
collecting the firmware logs. Only thing is that this won't allow the
application to re-register the diag buffer with different size, but the
buffer size which is allocated during driver load time will be enough for
most of the cases for collecting the firmware logs.
Link: https://lore.kernel.org/r/1568379890-18347-8-git-send-email-sreekanth.reddy@broadcom.com
Signed-off-by: Sreekanth Reddy <sreekanth.reddy@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Clear MPT3_DIAG_BUFFER_IS_RELEASED bit once diag buffer is re-registered
after reading the buffer, else driver won't release the buffer and return
the 'diag release' command with -EINVAL status saying that buffer is
already released.
Link: https://lore.kernel.org/r/1568379890-18347-7-git-send-email-sreekanth.reddy@broadcom.com
Signed-off-by: Sreekanth Reddy <sreekanth.reddy@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Application A has registered a diag buffer and looking for particular event
to happen to release & read the trace buffer. Meanwhile application B has
unregistered the diag buffer and now Application A can't get the required
diag buffer. So proper diag buffer ownership is missing.
Each application has to maintain its own Unique ID. Now driver has to save
the Application's UniqueID for each diag buffer type when diag buffer is
registered. And driver has to allow 'release', 'read' & 'unregister' diag
commands only if application's UniqueID matches with saved UniqueID for the
corresponding diag buffer type.
When diag buffer is registered by the driver, then the UniqueID saved by
the driver is "BRCM" (i.e. 0x4252434D) for SAS3 and above generations HBA
devices. For SAS2 HBAs, driver keeps the legacy UniqueID 0x07075900 for
maintaining compatibility with the legacy SAS2 application and this
improvement won't be applicable for SAS2 HBA devices.
Any application can own the buffer registered by the driver by sending
diag register request to driver with same buffer type and size
(Application can get the buffer size by sending 'query' command). Then
driver changes the ownership of the buffer by saving application's
UniqueID for that corresponding buffer type.
Also, application can re-register the diag buffer with same size without
un-registering it, but diag buffer should be released before re-registering
it. By allowing this, driver no need to deallocate and allocate a new
buffer for re-register command, same buffer can be re-used.
Link: https://lore.kernel.org/r/1568379890-18347-6-git-send-email-sreekanth.reddy@broadcom.com
Signed-off-by: Sreekanth Reddy <sreekanth.reddy@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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