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User process might want to share the device memory with another driver/device, and to allow it to access it over PCIe (P2P). To enable this, we utilize the dma-buf mechanism and add a dma-buf exporter support, so the other driver can import the device memory and access it. The device memory is allocated using our existing allocation uAPI, where the user will get a handle that represents the allocation. The user will then need to call the new uAPI (HL_MEM_OP_EXPORT_DMABUF_FD) and give the handle as a parameter. The driver will return a FD that represents the DMA-BUF object that was created to match that allocation. Signed-off-by: Oded Gabbay <ogabbay@kernel.org> Reviewed-by: Tomer Tayar <ttayar@habana.ai> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> |
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| .. | ||
| uacce | ||
| cxl.h | ||
| fastrpc.h | ||
| habanalabs.h | ||
| ocxl.h | ||
| pvpanic.h | ||
| xilinx_sdfec.h | ||