Bring back dmaengine API support for scatter-gather memcpy's.
Changes in patch v2:
* Expanded API function documentation to elaborate on its semantics,
limitations and corner case behaviour.
* Broke the patch series into three different ones: documentation, core
API change and consumer driver
v1 - https://lore.kernel.org/dmaengine/20210706234338.7696-1-adrian.martinezlarumbe@xxxxxxxxxx
Adrian Larumbe (3):
dmaengine: Add documentation for new memcpy scatter-gather function
dmaengine: Add core function and capability check for DMA_MEMCPY_SG
dmaengine: Add consumer for the new DMA_MEMCPY_SG API function.
.../driver-api/dmaengine/provider.rst | 23 ++++
drivers/dma/dmaengine.c | 7 +
drivers/dma/xilinx/xilinx_dma.c | 122 ++++++++++++++++++
include/linux/dmaengine.h | 20 +++
4 files changed, 172 insertions(+)
base-commit: e0674853943287669a82d1ffe09a700944615978
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2.33.1
