Re: [PATCH 23/23] dmaengine: sdxi: Add DMA engine provider

[Frank Li]

On Fri, Apr 10, 2026 at 08:07:33AM -0500, Nathan Lynch wrote:
> Register a DMA engine provider that implements memcpy. The number of
> channels per SDXI function can be controlled via a module
> parameter (dma_channels). The provider uses the virt-dma library.
>
> This survives dmatest runs with both polled and interrupt-signaled
> completion modes, with the following debug options and sanitizers
> enabled:
>
> CONFIG_DEBUG_KMEMLEAK=y
> CONFIG_KASAN=y
> CONFIG_PROVE_LOCKING=y
> CONFIG_SLUB_DEBUG_ON=y
> CONFIG_UBSAN=y
>
...
> +}
> diff --git a/drivers/dma/sdxi/dma.h b/drivers/dma/sdxi/dma.h
> new file mode 100644
> index 000000000000..4ff3c2cb67fc
> --- /dev/null
> +++ b/drivers/dma/sdxi/dma.h
> @@ -0,0 +1,12 @@
> +/* SPDX-License-Identifier: GPL-2.0-only */
> +/* Copyright Advanced Micro Devices, Inc. */
> +
> +#ifndef DMA_SDXI_DMA_H
> +#define DMA_SDXI_DMA_H
> +
> +struct sdxi_dev;
> +
> +int sdxi_dma_register(struct sdxi_dev *sdxi);
> +void sdxi_dma_unregister(struct sdxi_dev *sdxi);

where use this it ?

Frank
> +
> +#endif /* DMA_SDXI_DMA_H */
>
> --
> 2.53.0
>