On 3/21/21 9:59 PM, Sanjay R Mehta wrote:
> From: Sanjay R Mehta <[email protected]>
>
> Add support for AMD PTDMA 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.
>
> Signed-off-by: Sanjay R Mehta <[email protected]>
> ---
> diff --git a/drivers/dma/ptdma/Kconfig b/drivers/dma/ptdma/Kconfig
> new file mode 100644
> index 0000000..c4f8c6f
> --- /dev/null
> +++ b/drivers/dma/ptdma/Kconfig
> @@ -0,0 +1,11 @@
> +# SPDX-License-Identifier: GPL-2.0-only
> +config AMD_PTDMA
> + tristate "AMD PassThru DMA Engine"
> + depends on X86_64 && PCI
> + help
> + Enable support for the AMD PTDMA controller. This controller
> + provides DMA capabilities to performs high bandwidth memory to
to perform
> + memory and IO copy operation. It performs DMA transfer through
better: operations.
> + queue based descriptor management. This DMA controller is intended
queue-based
> + to use with AMD Non-Transparent Bridge devices and not for general
to be used with
or
for use with
> + purpose peripheral DMA.
--
~Randy
