AXI CDMA Standalone Driver
This page gives an overview of axi cdma driver which is available as part of the Xilinx Vivado and SDK distribution.
The Xilinx LogiCORE™ IP AXI Central Direct Memory Access (CDMA) core is a soft Xilinx Intellectual Property (IP) core for use with the Vivado® Design Suite. The AXI CDMA provides high-bandwidth Direct Memory Access (DMA) between a memory-mapped source address and a memory-mapped destination address using the AXI4 protocol. An optional Scatter Gather (SG) feature can be used to offload control and sequencing tasks from the system CPU. Initialization, status, and control registers are accessed through an AXI4-Lite slave interface.
Source Path for the driver
https://github.com/Xilinx/embeddedsw/tree/master/XilinxProcessorIPLib/drivers/axicdma
Driver source code is organized into different folders. Below diagram shows the axicdma driver source organization
AXI CDMA
|
- doc - Provides the API and data structure details
|
- examples - Reference application to show how to use the driver APIs and calling sequence
|
- src- Driver source files
The AXI CDMA Standalone driver supports the below things.
https://github.com/Xilinx/embeddedsw/tree/master/XilinxProcessorIPLib/drivers/axicdma/examples
xaxicdma_example_sg_intr.c : This example demonstrates how to transfer packets in interrupt mode when the core is configured in SG Mode.
xaxicdma_example_sg_poll.c : This example demonstrates how to transfer packets in the polled mode when the core is configured in SG Mode.
xaxicdma_example_simple_intr.c : This example demonstrates how to transfer packets in interrupt mode when the core is configured in simple DMA Mode.
xaxicdma_example_simple_poll.c : This example demonstrates how to transfer packets in the polled mode when the core is configured in simple DMA Mode.
xaxicdma_example_hybrid_intr.c : This example demonstrates how to transfer packets in interrupt mode when the core is configured in hybrid(SG + simple) transfer Mode.
xaxicdma_example_hybrid_poll.c : This example demonstrates how to transfer packets in the polled mode when the core is configured in hybrid(SG + simple) transfer Mode.
2019.2
Commit Id's
67fe31f axicdma: examples: Fix cache maintenance operation for data buffers
320aa07 axicdma: examples: Add errors prints for failing scenarios
2019.1
2018.3
Commit Id's
20df53d Fix typos in peripheral app generation tcl
394e44f examples: Reset error and done states before starting DMA
5e68393 examples: Fix compilation error in DEBUG mode
da70e17 Fix gcc warning in peripheral test application
f80f1ad Fix cppcheck warning
cd5bc3d Include missing initializers for 'XAxiCdma_Config' fields
2018.2
2018.1
Commit Id's
9fab83a axicdma: Extend AXI CDMA examples to support data buffers above 4GB
2017.4
2017.3