Dave Jiang
4ac823e9cd
dmaengine: idxd: fix delta_rec and crc size field for completion record
...
The delta_rec_size and crc_val in the completion record should
be 32bits and not 16bits.
Fixes: bfe1d56091nikhil.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 >
2021-04-12 13:26:03 +05:30
Dave Jiang
f25b463883
dmaengine: idxd: add IAX configuration support in the IDXD driver
...
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 >
2020-12-11 19:45:53 +05:30
Vinod Koul
0b5ad7b952
Merge branch 'for-linus' into fixes
...
Signed-off-by: Vinod Koul <vkoul@kernel.org >
Conflicts:
drivers/dma/idxd/sysfs.c
2020-08-05 19:02:07 +05:30
Dave Jiang
1a0c02ba64
dmaengine: idxd: add missing invalid flags field to completion
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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 >
2020-07-27 14:38:05 +05:30
Dave Jiang
0b8975bdc0
dmaengine: idxd: fix hw descriptor fields for delta record
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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 >
2020-06-24 11:53:34 +05:30
Tony Luck
7c4a4d0882
dmaengine: idxd: Merge definition of dsa_batch_desc into dsa_hw_desc
...
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 >
2020-03-11 15:08:52 +05:30
Dave Jiang
bfe1d56091
dmaengine: idxd: Init and probe for Intel data accelerators
...
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 >
2020-01-24 11:18:45 +05:30
