linux-stable/include/uapi/misc
Oded Gabbay a9498ee575 habanalabs: define uAPI to export FD for DMA-BUF
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>
2021-10-18 12:05:47 +03:00
..
uacce crypto: hisilicon/qm - add queue isolation support for Kunpeng930 2021-03-26 20:15:58 +11:00
cxl.h
fastrpc.h misc: fastrpc: add ioctl for attaching to sensors pd 2020-09-16 17:30:37 +02:00
habanalabs.h habanalabs: define uAPI to export FD for DMA-BUF 2021-10-18 12:05:47 +03:00
ocxl.h
pvpanic.h
xilinx_sdfec.h