Hello Don, On 6/29/23 23:10, Don Brace wrote:
Update smartpqi.4 man page with out out-of-box driver.
Update copywrite.
Change URL to microchip.
Add in two new module parameters:
disable_managed_interrupts
ctrl_ready_timeout
Add in some host level sysfs entries:
enable_stream_detection
ssd_smart_path_enabled
enable_r5_writes
enable_r6_writes
Add in some device level sysfs entries:
lunid
unique_id
path_info
raid_bypass_cnt
sas_ncq_prio_enable
Update some descriptions.
Please break this into several patches to form a patch set. Please have a look at the ./CONTRIBUTING file.
Reviewed-by: Scott Benesh <scott.benesh@xxxxxxxxxxxxx> Reviewed-by: Scott Teel <scott.teel@xxxxxxxxxxxxx> Reviewed-by: Mike McGowen <mike.mcgowen@xxxxxxxxxxxxx> Reviewed-by: Kevin Barnett <kevin.barnett@xxxxxxxxxxxxx> Signed-off-by: Don Brace <don.brace@xxxxxxxxxxxxx>
Could you please add a more descriptive subject line? Thanks, Alex
---
man4/smartpqi.4 | 229 +++++++++++++++++++++++++++++++++++++++---------
1 file changed, 186 insertions(+), 43 deletions(-)
diff --git a/man4/smartpqi.4 b/man4/smartpqi.4
index 147d53fc2a0a..7c1da3c80d57 100644
--- a/man4/smartpqi.4
+++ b/man4/smartpqi.4
@@ -1,13 +1,13 @@
'\" t
-.\" Copyright (C) 2019, Microchip Technology Inc. and its subsidiaries
+.\" Copyright (C) 2019-2023, Microchip Technology Inc. and its subsidiaries
.\" Copyright (C) 2016-2018, Microsemi Corporation
.\" Copyright (C) 2016, PMC-Sierra, Inc.
-.\" Written by Kevin Barnett <kevin.barnett@xxxxxxxxxxxxx>
+.\" Written by Kevin Barnett <kevin.barnett@xxxxxxxxxxxxx>
.\"
.\" SPDX-License-Identifier: GPL-2.0-only
.TH smartpqi 4 (date) "Linux man-pages (unreleased)"
.SH NAME
-smartpqi \- Microsemi Smart Family SCSI driver
+smartpqi \- Microchip Smart Storage SCSI driver
.SH SYNOPSIS
.SY "modprobe smartpqi"
.RB [ disable_device_id_wildcards= { 0 | 1 }]
@@ -16,10 +16,12 @@ smartpqi \- Microsemi Smart Family SCSI driver
.RB [ lockup_action= { none | reboot | panic }]
.RB [ expose_ld_first= { 0 | 1 }]
.RB [ hide_vsep= { 0 | 1 }]
+.RB [ disable_managed_interrupts= { 0 | 1 }]
+.RB [ ctrl_ready_timeout= { 0 | 30-1800 }]
.YS
.SH DESCRIPTION
.B smartpqi
-is a SCSI driver for Microsemi Smart Family controllers.
+is a SCSI driver for Microchip Smart Storage controllers.
.SS Supported \f[BI]ioctl\fP\/() operations
For compatibility with applications written for the
.BR cciss (4)
@@ -66,17 +68,17 @@ Allows BMIC and CISS commands to be passed through to the controller.
.TP
.BR disable_device_id_wildcards= { 0 | 1 }
Disables support for device ID wildcards.
-The default value is 0.
+The default value is 0 (wildcards are enabled).
.TP
.BR disable_heartbeat= { 0 | 1 }
Disables support for the controller's heartbeat check.
This parameter is used for debugging purposes.
-The default value is 0, leaving the controller's heartbeat check active.
+The default value is 0 (the controller's heartbeat check is enabled).
.TP
.BR disable_ctrl_shutdown= { 0 | 1 }
Disables support for shutting down the controller in the
event of a controller lockup.
-The default value is 0.
+The default value is 0 (controller will be shut down).
.TP
.BR lockup_action= { none | reboot | panic }
Specifies the action the driver takes when a controller
@@ -94,17 +96,26 @@ parameter action
.TE
.TP
.BR expose_ld_first= { 0 | 1 }
-This option enables support for exposing logical devices to
-the operating system before physical devices.
-The default value is 0.
+This option exposes logical devices to the OS before physical devices.
+The default value is 0 (physical devices exposed first).
.TP
.BR hide_vsep= { 0 | 1 }
-This option enables disabling exposure of the virtual SEP to the host.
-This is usually associated with direct attached drives.
-The default value is 0.
+This option disables exposure of the virtual SEP to the OS.
+The default value is 0 (virtual SEP is exposed).
+.TP
+.BR disable_managed_interrupts= { 0 | 1 }
+Disables driver utilization of Linux kernel managed interrupts for
+controllers. The managed interrupts feature automatically distributes
+interrupts to all available CPUs and assigns SMP affinity.
+The default value is 0 (managed interrupts enabled).
+.TP
+.BR ctrl_ready_timeout= { 0 | 30-1800 }
+This option specifies the timeout in seconds for the driver to wait
+for controller ready. The valid range is 0 or 30-1800. The default value
+is 0, which causes the driver to use a timeout of 180 seconds.
.SH FILES
.SS Device nodes
-Logical drives are accessed via the SCSI disk driver
+Disk drives are accessed via the SCSI disk driver
.RI ( sd ),
tape drives via the SCSI tape driver
.RI ( st ),
@@ -124,29 +135,12 @@ The host
attribute is a write-only attribute.
Writing to this attribute will cause the driver to scan for new,
changed, or removed devices (e.g., hot-plugged tape drives, or newly
-configured or deleted logical drives) and notify the SCSI mid-layer of
+configured or deleted logical volumes) and notify the SCSI mid-layer of
any changes detected.
Usually this action is triggered automatically by configuration
changes, so the user should not normally have to write to this file.
Doing so may be useful when hot-plugging devices such as tape drives or
-entire storage boxes containing pre-configured logical drives.
-.TP
-.IR /sys/class/scsi_host/host * /version
-The host
-.I version
-attribute is a read-only attribute.
-This attribute contains the driver version and the controller firmware
-version.
-.IP
-For example:
-.IP
-.in +4n
-.EX
-$ \c
-.B cat /sys/class/scsi_host/host1/version
-driver: 1.1.2\-126
-firmware: 1.29\-112
-.EE
+entire storage boxes containing pre-configured logical volumes.
.in
.TP
.IR /sys/class/scsi_host/host * /lockup_action
@@ -162,7 +156,7 @@ for an explanation of the
.I lockup_action
values.
.TP
-.I /sys/class/scsi_host/host*/driver_version
+.IR /sys/class/scsi_host/host*/driver_version
The
.I driver_version
attribute is read-only.
@@ -178,7 +172,7 @@ $ \c
.EE
.in
.TP
-.I /sys/class/scsi_host/host*/firmware_version
+.IR /sys/class/scsi_host/host*/firmware_version
The
.I firmware_version
attribute is read-only.
@@ -194,7 +188,7 @@ $ \c
.EE
.in
.TP
-.I /sys/class/scsi_host/host*/model
+.IR /sys/class/scsi_host/host*/model
The
.I model
attribute is read-only.
@@ -210,7 +204,7 @@ $ \c
.EE
.in
.TP
-.I /sys/class/scsi_host/host*/serial_number
+.IR /sys/class/scsi_host/host*/serial_number
The
.I serial_number
attribute is read-only.
@@ -226,7 +220,7 @@ $ \c
.EE
.in
.TP
-.I /sys/class/scsi_host/host*/vendor
+.IR /sys/class/scsi_host/host*/vendor
The
.I vendor
attribute is read-only.
@@ -241,6 +235,63 @@ $ \c
Adaptec
.EE
.in
+.TP
+.IR /sys/class/scsi_host/host*/enable_stream_detection
+The
+.I enable_stream_detection
+attribute is read-write.
+This attribute enables/disables stream detection in the driver.
+Enabling stream detection can improve sequential write performance for ioaccel-enabled volumes. See the
+.BI ssd_smart_path_enabled
+disk attribute section for details on ioaccel-enabled volumes.
+The default value is 1 (stream detection enabled).
+.IP
+Enable example:
+.IP
+.in +4n
+.EX
+$ \c
+.B echo 1 > /sys/class/scsi_host/host1/enable_stream_detection
+.EE
+.in
+.TP
+.IR /sys/class/scsi_host/host*/enable_r5_writes
+The
+.I enable_r5_writes
+attribute is read-write.
+This attribute enables/disables RAID 5 write operations for ioaccel-enabled volumes.
+Enabling can improve sequential write performance. See the
+.BI ssd_smart_path_enabled
+disk attribute section for details on ioaccel-enabled volumes.
+The default value is 1 (RAID 5 writes enabled).
+.IP
+Enable example:
+.IP
+.in +4n
+.EX
+$ \c
+.B echo 1 > /sys/class/scsi_host/host1/enable_r5_writes
+.EE
+.in
+.TP
+.IR /sys/class/scsi_host/host*/enable_r6_writes
+The
+.I enable_r6_writes
+attribute is read-write.
+This attribute enables/disables RAID 6 write operations for ioaccel-enabled volumes.
+Enabling can improve sequential write performance. See the
+.BI ssd_smart_path_enabled
+disk attribute section for details on ioaccel-enabled volumes.
+The default value is 1 (RAID 6 writes enabled).
+.IP
+Enable example:
+.IP
+.in +4n
+.EX
+$ \c
+.B echo 1 > /sys/class/scsi_host/host1/enable_r6_writes
+.EE
+.in
.SS SmartPQI-specific disk attribute files in \f[BI]/sys\fP
In the file specifications below,
.I c
@@ -256,7 +307,7 @@ is the logical unit number (LUN).
The
.I raid_level
attribute is read-only.
-This attribute contains the RAID level of each logical drive.
+This attribute contains the RAID level of the logical volume.
.IP
For example:
.IP
@@ -272,7 +323,7 @@ RAID 0
The
.I sas_address
attribute is read-only.
-This attribute contains the unique identifier of the disk.
+This attribute contains the SAS address of the device.
.IP
For example:
.IP
@@ -305,22 +356,114 @@ $ \c
0
.EE
.in
+.TP
+.IR /sys/class/scsi_disk/c : b : t : l/device/lunid
+The
+.I lunid
+attribute is read-only.
+This attribute contains the SCSI LUN ID for the device.
+.IP
+For example:
+.IP
+.in +4n
+.EX
+$ \c
+.B cat /sys/class/scsi_disk/13:1:0:3/device/lunid
+0x0300004000000000
+.EE
+.in
+.TP
+.IR /sys/class/scsi_disk/c : b : t : l/device/unique_id
+The
+.I unique_id
+attribute is read-only.
+This attribute contains a 16-byte ID that uniquely identifies the device within the controller.
+.IP
+For example:
+.IP
+.in +4n
+.EX
+$ \c
+.B cat /sys/class/scsi_disk/13:1:0:3/device/unique_id
+600508B1001C6D4723A8E98D704FDB94
+.EE
+.in
+.TP
+.IR /sys/class/scsi_disk/c : b : t : l/device/path_info
+The
+.I path_info
+attribute is read-only.
+This attribute contains the c:b:t:l of the device along with the device type and whether the device is Active or Inactive. If the device is an HBA device,
+.I path_info
+will also display the PORT, BOX, and BAY the device is plugged into.
+.IP
+For example:
+.IP
+.in +4n
+.EX
+$ \c
+.B cat /sys/class/scsi_disk/13:1:0:3/device/path_info
+[13:1:0:3] Direct-Access Active
+
+$ \c
+.B cat /sys/class/scsi_disk/12:0:9:0/device/path_info
+[12:0:9:0] Direct-Access PORT: C1 BOX: 1 BAY: 14 Inactive
+[12:0:9:0] Direct-Access PORT: C0 BOX: 1 BAY: 14 Active
+.EE
+.in
+.TP
+.IR /sys/class/scsi_disk/13:1:0:3/device/raid_bypass_cnt
+The
+.I raid_bypass_cnt
+attribute is read-only.
+This attribute contains the number of I/O requests that have gone through the
+ioaccel path for ioaccel-enabled volumes. See the
+.BI ssd_smart_path_enabled
+disk attribute section for details on ioaccel-enabled volumes.
+.IP
+For example:
+.IP
+.in +4n
+.EX
+$ \c
+.B cat /sys/class/scsi_disk/13:1:0:3/device/raid_bypass_cnt
+0x300
+.EE
+.in
+.TP
+.IR /sys/class/scsi_disk/13:1:0:3/device/sas_ncq_prio_enable
+The
+.I sas_ncq_prio_enable
+attribute is read/write.
+This attribute enables SATA NCQ priority support.
+This attribute works only when device has NCQ support and
+controller firmware can handle IO with NCQ priority attribute.
+.IP
+For example:
+.IP
+.in +4n
+.EX
+$ \c
+.B echo 1 > /sys/class/scsi_disk/13:1:0:3/device/sas_ncq_prio_enable
+.EE
+.in
.SH VERSIONS
The
.B smartpqi
driver was added in Linux 4.9.
.SH NOTES
.SS Configuration
-To configure a Microsemi Smart Family controller,
+To configure a Microchip Smart Storage controller,
refer to the User Guide for the controller,
which can be found by searching for the specific controller at
-.UR https://storage.microsemi.com/
+.UR https://www.microchip.com/design-centers/storage
.UE .
.SH SEE ALSO
.BR cciss (4),
.BR hpsa (4),
.BR sd (4),
-.BR st (4)
+.BR st (4),
+.BR sg (4)
.PP
.I Documentation/ABI/testing/sysfs\-bus\-pci\-devices\-cciss
in the Linux kernel source tree.
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