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SubjectRe: [RESEND PATCH V1 XDMA 0/1] xilinx XDMA driver
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Hi Vinod,


Just a kind reminder and we are looking forward your review and comment.


Thanks,

Lizhi

On 8/10/22 15:45, Lizhi Hou wrote:
> Hello,
>
> This V1 of patch series is to provide the platform driver to support the
> Xilinx XDMA subsystem. The XDMA 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. It also provides up to 16 user
> interrupt wires to user logic that generate interrupts to the host.
>
> +-------+ +-------+ +-----------+
> PCIe | | | | | |
> Tx/Rx | | | | AXI | |
> <=======> | PCIE | <===> | XDMA | <====>| User Logic|
> | | | | | |
> +-------+ +-------+ +-----------+
>
> The XDMA has been used for Xilinx Alveo PCIe devices.
> And it is also integrated into Versal ACAP DMA and Bridge Subsystem.
> https://www.xilinx.com/products/boards-and-kits/alveo.html
> https://docs.xilinx.com/r/en-US/pg344-pcie-dma-versal/Introduction-to-the-DMA-and-Bridge-Subsystems
>
> The device driver for any FPGA based PCIe device which leverages XDMA can
> call the standard dmaengine APIs to discover and use the XDMA subsystem
> without duplicating the XDMA driver code in its own driver.
>
> Lizhi Hou (1):
> dmaengine: xilinx: xdma: add xilinx xdma driver
>
> MAINTAINERS | 10 +
> drivers/dma/Kconfig | 13 +
> drivers/dma/xilinx/Makefile | 1 +
> drivers/dma/xilinx/xdma-regs.h | 179 +++++
> drivers/dma/xilinx/xdma.c | 952 +++++++++++++++++++++++++
> include/linux/platform_data/amd_xdma.h | 34 +
> 6 files changed, 1189 insertions(+)
> create mode 100644 drivers/dma/xilinx/xdma-regs.h
> create mode 100644 drivers/dma/xilinx/xdma.c
> create mode 100644 include/linux/platform_data/amd_xdma.h
>

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