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Adventurer
Adventurer
2,586 Views
Registered: ‎07-10-2015

problems with XDMA linux driver

after I install xdma driver ,(followed https://www.xilinx.com/Attachment/Xilinx_Answer_65444_2016_4.pdf) I rum dmesg:

xdma: module verification failed: signature and/or required key missing - tainting kernel

 

I run 

./dma_to_device -d /dev/xdma0_bypass_h2c_0 -f data/datafile0_4K.bin -s 1024 -a 0000 -c 1

 

there is a kernel bug,

while I run

./dma_from_device -d /dev/xdma0_bypass_c2h_0 -f data/output_file.bin -s 1024 -a 0000 -c 1

all zeros!

 

How can I use bypass acess the ddr bar memory,rather then reg wr reg rd?

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