| c38bafee | 30-Apr-2025 |
Hareshx Sankar Raj <hareshx.sankar.raj@intel.com> |
qat: move debugfs handling to separate file
Moved handling of debugfs entries to a separate file.
In addition, it will allow to consolidate the addition of
debugfs entries to a single location in th
qat: move debugfs handling to separate file
Moved handling of debugfs entries to a separate file.
In addition, it will allow to consolidate the addition of
debugfs entries to a single location in the code.
This implementation adds infrastructure to create (and remove)
debugfs entries at two different stages.
- Done when a device is probed, allows to keep debugfs entries
persistent between a transition in device state (up to down or
vice versa).
- Done after the initialization phase, allows to have debugfs
entries that are accessible only when the device is up.
In addition, moved the creation of debugfs entries for configuration
of the newly created function adf_dbgfs_init() and replace symbolic
permissions with octal permissions when creating the debugfs files.
Added sysctl oids storage for proper cleanup on device down.
Reviewed by: markj, ziaee
MFC after: 2 weeks
Sponsored by: Intel Corporation
Differential Revision: https://reviews.freebsd.org/D50379
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| 5a8e5215 | 30-Apr-2025 |
Hareshx Sankar Raj <hareshx.sankar.raj@intel.com> |
qat: add disable safe dc mode for QAT SPR devices
Build and sysctl configuration modes are introduced for QAT SPR
devices to disable safe dc mode. A new QAT driver build option
‘QAT_DISABLE_SAFE_DC_
qat: add disable safe dc mode for QAT SPR devices
Build and sysctl configuration modes are introduced for QAT SPR
devices to disable safe dc mode. A new QAT driver build option
‘QAT_DISABLE_SAFE_DC_MODE’ is required to build the QAT driver
with code that allows a request to be sent to FW to override the
‘History Buffer’ mitigation. Default QAT driver builds do not
include this ‘QAT_DISABLE_SAFE_DC_MODE’ build option. Even if the
QAT driver was built with code that allows a request to be sent to
FW to override the ‘History Buffer’ mitigation, the QAT driver must
still be configured using sysctl to request an override of the
‘History Buffer’ mitigation if desired. The default QAT driver
configuration option sysctl dev.qat.X.disable_safe_dc_mode does not
allow override of the mitigation. The new sysctl attribute
disable_safe_dc_mode is to be set to 1 for overriding the history
buffer mitigation. Firmware for qat_4xxx is updated for this change.
If this mode is enabled, decompression throughput increases but may
result in a data leak if num_user_processes is more than 1.
This option is to be enabled only if your system is not prone to
user data leaks.
Reviewed by: markj, ziaee
MFC after: 2 weeks
Sponsored by: Intel Corporation
Differential Revision: https://reviews.freebsd.org/D50379
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