Add DMA demo #100
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Add DMA demo #100
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Add two AXI Stream interfaces, and an iob-dma core. Demo in baremetal firmware: 1) Use DMA to demo transfer of data from memory to axistream (out). 2) Transfer data from axistream (out) core to axistream (in) core. 3) Use DMA to Transfer data from axistream (in) to memory. 4) Compare original memory data with newly received data. TODO: Demo in Linux
Add linux drivers for iob-axis and iob-dma cores; Add dma_demo program to test dma in linux; Add minicom script to run dma_demo program; WIP: sz file transfer of dma test is failing.
Drivers do not initialize correctly. Probably due to missing mdev or device tree.
DMA demo is working but received AXISTREAM (in) values are incorrect. I assume due to cache issues.
Add linux build targets similar to those of iob-soc-sut repository. DMA transfers are still not working well. They do work on some runs but not in others. It seems to work when the DMA (dynamically allocaed) shared memory address is less than 0x81000000. Maybe some hardware issue with values above 24 bits?
This contains a fix in the axis2axi_out module that should remove the DMA issue.
Add macro for dma_demo. To run DMA demo, type: make dma-demo
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Add Makefile targets and configuration to build opencryptolinux with a few extra peripherals and demonstrate a data transfer via Direct Memory Access (DMA) in linux.
To run DMA demo, type:
make dma-demo