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Revision tags: v6.15, v6.15-rc7, v6.15-rc6, v6.15-rc5, v6.15-rc4, v6.15-rc3, v6.15-rc2, v6.15-rc1, v6.14, v6.14-rc7, v6.14-rc6, v6.14-rc5, v6.14-rc4, v6.14-rc3, v6.14-rc2, v6.14-rc1, v6.13, v6.13-rc7, v6.13-rc6, v6.13-rc5, v6.13-rc4, v6.13-rc3, v6.13-rc2, v6.13-rc1, v6.12, v6.12-rc7, v6.12-rc6, v6.12-rc5 |
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90a30e26 |
| 25-Oct-2024 |
Basavaraj Natikar <[email protected]> |
dmaengine: ae4dma: Add AMD ae4dma controller driver
Add support for AMD AE4DMA controller. It performs high-bandwidth
memory to memory and IO copy operation. Device commands are managed
via a circul
dmaengine: ae4dma: Add AMD ae4dma controller driver
Add support for AMD AE4DMA controller. It performs high-bandwidth
memory to memory and IO copy operation. Device commands are managed
via a circular queue of 'descriptors', each of which specifies source
and destination addresses for copying a single buffer of data.
Reviewed-by: Raju Rangoju <[email protected]>
Reviewed-by: Philipp Stanner <[email protected]>
Signed-off-by: Basavaraj Natikar <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Vinod Koul <[email protected]>
show more ...
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e01ee7c6 |
| 25-Oct-2024 |
Basavaraj Natikar <[email protected]> |
dmaengine: Move AMD PTDMA driver to amd directory
PTDMA driver is the AMD DMA driver, and newer AMD platforms support newer
DMA engines. Hence, move the current drivers to the AMD directory. This
wo
dmaengine: Move AMD PTDMA driver to amd directory
PTDMA driver is the AMD DMA driver, and newer AMD platforms support newer
DMA engines. Hence, move the current drivers to the AMD directory. This
would also mean that future driver submissions to the AMD DMA driver will
also land in the AMD-specific directory.
Reviewed-by: Raju Rangoju <[email protected]>
Signed-off-by: Basavaraj Natikar <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Vinod Koul <[email protected]>
show more ...
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Revision tags: v6.12-rc4, v6.12-rc3, v6.12-rc2, v6.12-rc1, v6.11, v6.11-rc7, v6.11-rc6, v6.11-rc5 |
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73d5fc92 |
| 19-Aug-2024 |
Nishad Saraf <[email protected]> |
dmaengine: amd: qdma: Add AMD QDMA driver
Adds driver to enable PCIe board which uses AMD QDMA (the Queue-based
Direct Memory Access) subsystem. For example, Xilinx Alveo V70 AI
Accelerator devices.
dmaengine: amd: qdma: Add AMD QDMA driver
Adds driver to enable PCIe board which uses AMD QDMA (the Queue-based
Direct Memory Access) subsystem. For example, Xilinx Alveo V70 AI
Accelerator devices.
https://www.xilinx.com/applications/data-center/v70.html
The QDMA subsystem is used in conjunction with the PCI Express IP block
to provide high performance data transfer between host memory and the
card's DMA subsystem.
+-------+ +-------+ +-----------+
PCIe | | | | | |
Tx/Rx | | | | AXI | |
<=======> | PCIE | <===> | QDMA | <====>| User Logic|
| | | | | |
+-------+ +-------+ +-----------+
The primary mechanism to transfer data using the QDMA is for the QDMA
engine to operate on instructions (descriptors) provided by the host
operating system. Using the descriptors, the QDMA can move data in both
the Host to Card (H2C) direction, or the Card to Host (C2H) direction.
The QDMA provides a per-queue basis option whether DMA traffic goes
to an AXI4 memory map (MM) interface or to an AXI4-Stream interface.
The hardware detail is provided by
https://docs.xilinx.com/r/en-US/pg302-qdma
Implements dmaengine APIs to support MM DMA transfers.
- probe the available DMA channels
- use dma_slave_map for channel lookup
- use virtual channel to manage dmaengine tx descriptors
- implement device_prep_slave_sg callback to handle host scatter gather
list
Signed-off-by: Nishad Saraf <[email protected]>
Signed-off-by: Lizhi Hou <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Vinod Koul <[email protected]>
show more ...
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