linux-dev - Linux kernel development work

Age	Commit message (Collapse)	Author	Files	Lines
2021-04-12	dmaengine: idxd: fix delta_rec and crc size field for completion record	Dave Jiang	1	-2/+2
	The delta_rec_size and crc_val in the completion record should be 32bits and not 16bits. Fixes: bfe1d56091c1 ("dmaengine: idxd: Init and probe for Intel data accelerators") Reported-by: Nikhil Rao <nikhil.rao@intel.com> Signed-off-by: Dave Jiang <dave.jiang@intel.com> Link: https://lore.kernel.org/r/161645618572.2003490.14466173451736323035.stgit@djiang5-desk3.ch.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-12-11	dmaengine: idxd: add IAX configuration support in the IDXD driver	Dave Jiang	1	-0/+79
	Add support to allow configuration of Intel Analytics Accelerator (IAX) in addition to the Intel Data Streaming Accelerator (DSA). The IAX hardware has the same configuration interface as DSA. The main difference is the type of operations it performs. We can support the DSA and IAX devices on the same driver with some tweaks. IAX has a 64B completion record that needs to be 64B aligned, as opposed to a 32B completion record that is 32B aligned for DSA. IAX also does not support token management. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Link: https://lore.kernel.org/r/160564555488.1834439.4261958859935360473.stgit@djiang5-desk3.ch.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-08-05	Merge branch 'for-linus' into fixes	Vinod Koul	1	-0/+6
	Signed-off-by: Vinod Koul <vkoul@kernel.org> Conflicts: drivers/dma/idxd/sysfs.c
2020-07-27	dmaengine: idxd: add missing invalid flags field to completion	Dave Jiang	1	-0/+6
	Add missing "invalid flags" field to completion record struct. Reported-by: Nikhil Rao <nikhil.rao@intel.com> Signed-off-by: Dave Jiang <dave.jiang@intel.com> Link: https://lore.kernel.org/r/159526025819.49266.13176787210106133664.stgit@djiang5-desk3.ch.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-06-24	dmaengine: idxd: fix hw descriptor fields for delta record	Dave Jiang	1	-0/+3
	Fix the hw descriptor fields for delta record in user exported idxd.h header. Missing the "expected result mask" field. Reported-by: Mona Hossain <mona.hossain@intel.com> Signed-off-by: Dave Jiang <dave.jiang@intel.com> Link: https://lore.kernel.org/r/159120526866.65385.536565786678052944.stgit@djiang5-desk3.ch.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-03-11	dmaengine: idxd: Merge definition of dsa_batch_desc into dsa_hw_desc	Tony Luck	1	-16/+5
	We don't need a special structure just for batch descriptors. The layout matches the general form for other descriptors. Merge the desc_list_addr field into the union of other aliases for the the third quadword in the structure. Create a union to alias "xfer_size" with "desc_count". Signed-off-by: Tony Luck <tony.luck@intel.com> Acked-by: Dave Jiang <dave.jiang@intel.com> Link: https://lore.kernel.org/r/158387868208.35922.5895104426944263789.stgit@djiang5-desk3.ch.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-01-24	dmaengine: idxd: Init and probe for Intel data accelerators	Dave Jiang	1	-0/+228
	The idxd driver introduces the Intel Data Stream Accelerator [1] that will be available on future Intel Xeon CPUs. One of the kernel access point for the driver is through the dmaengine subsystem. It will initially provide the DMA copy service to the kernel. Some of the main functionality introduced with this accelerator are: shared virtual memory (SVM) support, and descriptor submission using Intel CPU instructions movdir64b and enqcmds. There will be additional accelerator devices that share the same driver with variations to capabilities. This commit introduces the probe and initialization component of the driver. [1]: https://software.intel.com/en-us/download/intel-data-streaming-accelerator-preliminary-architecture-specification Signed-off-by: Dave Jiang <dave.jiang@intel.com> Link: https://lore.kernel.org/r/157965023991.73301.6186843973135311580.stgit@djiang5-desk3.ch.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>