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Zynq network driver -- Gem ethernet, the big picture

The Gem controller supports scatter/gather IO, and checksum computation (for IP, TCP, UDP) can be offloaded to the controller.

Section 16 of the TRM describes the Gem controller. Section 16.3 is a programming guide.

The U-boot driver configures 32 receive buffers. It would be worth looking at the presumably more elaborate linux driver to see what it does.

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