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| author | Dave Jiang <dave.jiang@intel.com> | 2020-01-22 00:43:59 +0100 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2020-01-24 06:48:45 +0100 |
| commit | bfe1d56091c1a404b3d4ce7e9809d745fc4453bb (patch) | |
| tree | 5e53b468626dc7fb9533e4865258d8ba1dc69862 /drivers/dma/Kconfig | |
| parent | dmaengine: add support to dynamic register/unregister of channels (diff) | |
| download | linux-bfe1d56091c1a404b3d4ce7e9809d745fc4453bb.tar.xz linux-bfe1d56091c1a404b3d4ce7e9809d745fc4453bb.zip | |
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>
Diffstat (limited to 'drivers/dma/Kconfig')
| -rw-r--r-- | drivers/dma/Kconfig | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/dma/Kconfig b/drivers/dma/Kconfig index 312a6cc36c78..a8f8e9552885 100644 --- a/drivers/dma/Kconfig +++ b/drivers/dma/Kconfig @@ -273,6 +273,19 @@ config INTEL_IDMA64 Enable DMA support for Intel Low Power Subsystem such as found on Intel Skylake PCH. +config INTEL_IDXD + tristate "Intel Data Accelerators support" + depends on PCI && X86_64 + select DMA_ENGINE + select SBITMAP + help + Enable support for the Intel(R) data accelerators present + in Intel Xeon CPU. + + Say Y if you have such a platform. + + If unsure, say N. + config INTEL_IOATDMA tristate "Intel I/OAT DMA support" depends on PCI && X86_64 |