Linux mSGDMA Driver Agilex 5

Hi,

You may be interested in checking the "HPS-FPGA Interface Demos" for Agilex 5.

• https://github.com/altera-fpga/agilex5-demo-hps2fpga-interfaces/blob/main/documentation/01_index.md

The introductory documentation explains the demos repository concept and what examples are included.

One example that may be of interest is the "F2H-Bridge": it uses a msgdma core to stream data across the F2H-Bridge from an internal FPGA RAM to EMIF buffer and vice-versa. Its a different approach than using a driver, the descriptors are pushed into the msgdma and the DMA duration time is computed in the app.

• https://github.com/altera-fpga/agilex5-demo-hps2fpga-interfaces/blob/main/documentation/10_menu_b_hw_f2h_bridge.md

The demos are run under u-boot (using u-boot API) but some have been ported to Linux environment.

The code of the "F2H-Bridge" Linux Application: https://github.com/altera-fpga/agilex5-demo-hps2fpga-interfaces/blob/main/common_sw/linux_apps/f2h_bridge.c