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2020-12-10dmaengine: idxd: add ATS disable knob for work queuesDave Jiang1-0/+7
With the DSA spec 1.1 update, a knob to disable ATS for individually is introduced. Add enabling code to allow a system admin to make the configuration through sysfs. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Link: https://lore.kernel.org/r/160530810593.1288392.2561048329116529566.stgit@djiang5-desk3.ch.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-10-30dmaengine: idxd: Add ABI documentation for shared wqDave Jiang1-0/+14
Add the sysfs attribute bits in ABI/stable for shared wq support. Signed-off-by: Jing Lin <jing.lin@intel.com> Signed-off-by: Dave Jiang <dave.jiang@intel.com> Reviewed-by: Tony Luck <tony.luck@intel.com> Reviewed-by: Dan Williams <dan.j.williams@intel.com> Link: https://lore.kernel.org/r/160382008649.3911367.10851752182908509837.stgit@djiang5-desk3.ch.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-09-03dmaengine: idxd: add command status to idxd sysfs attributeDave Jiang1-0/+6
Export admin command status to sysfs attribute in order to allow user to retrieve configuration error. Allows user tooling to retrieve the command error and provide more user friendly error messages. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Link: https://lore.kernel.org/r/159865278770.29455.8026892329182750127.stgit@djiang5-desk3.ch.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-09-03dmaengine: idxd: add support for configurable max wq batch sizeDave Jiang1-0/+7
Add sysfs attribute max_batch_size to wq in order to allow the max batch size configured on a per wq basis. Add support code to configure the valid user input on wq enable. This is a performance tuning parameter. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Link: https://lore.kernel.org/r/159865273617.29141.4383066301730821749.stgit@djiang5-desk3.ch.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-09-03dmaengine: idxd: add support for configurable max wq xfer sizeDave Jiang1-0/+7
Add sysfs attribute max_xfer_size to wq in order to allow the max xfer size configured on a per wq basis. Add support code to configure the valid user input on wq enable. This is a performance tuning parameter. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Link: https://lore.kernel.org/r/159865265404.29141.3049399618578194052.stgit@djiang5-desk3.ch.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-06-24dmaengine: idxd: add leading / for sysfspath in ABI documentationDave Jiang1-28/+28
Correct to standard convention. All sysfs paths seem to be missing leading /. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Reviewed-by: Dan Williams <dan.j.williams@intel.com> Link: https://lore.kernel.org/r/159225447176.68253.2922149693913698177.stgit@djiang5-desk3.ch.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-04-15dmaengine: idxd: export hw version through sysfsDave Jiang1-0/+6
Some user apps would like to know the hardware version in order to determine the variation of the hardware. Export the hardware version number to userspace via sysfs. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Link: https://lore.kernel.org/r/158696714008.39484.13401950732606906479.stgit@djiang5-desk3.ch.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-01-24dmaengine: idxd: add sysfs ABI for idxd driverJing Lin1-0/+171
Add the sysfs ABI information for idxd driver in Documentation/ABI/stable directory. Signed-off-by: Jing Lin <jing.lin@intel.com> Signed-off-by: Dave Jiang <dave.jiang@intel.com> Link: https://lore.kernel.org/r/157965025170.73301.13428570530450446901.stgit@djiang5-desk3.ch.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
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