Using PS_DMA in linux

Hi, I succeeded to use PS_DMA driver to transfer data in standalone system.
Next step, I tried to use linux from sd card. The SD card which was enclosed with zedboard kit has linux image, so I made 'Boot.bin' file and tried to test led. It works well.

Now, I want to use DMA(PS_DMA) in linux, but I don't know how to use this driver in linux.
Please, tell me how to use PS_DMA driver in linux.
Thanks!

0 Former Member over 12 years ago

Hello,

I'm new in Linux, does anyone know a way how to use PS_DMA driver in linux? For example the PL330 driver I found on this page:

http://www.wiki.xilinx.com/Linux+Drivers

Thanks in advance
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0 Former Member over 12 years ago

Hello,

I think I have to generate a .ko-file and load it into kernel with insmod. Right?

I tried different Makefiles from different sources to generate a .ko-file, but no one works.

Can anyone give me evidence how to write a working Makefile to generate a .ko-file from .c-file.

Thanks in advance
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0 Former Member over 12 years ago

Hello,

I finished the tutorial on http://www.wiki.xilinx.com/Zynq+Linux+pl330+DMA

When I use the DMA Controller I get the error message:

       dma buffer alloc - d @0x1fb22000 v @0xffdfa000
       xfifo_dma 78000000.fifo_dma: DMA fault type 131072 at address 0x1f89f021 on channel 1

On second try I get nearly the same error Message but with different addresses:

       dma buffer alloc - d @0x3810000 v @0xffdfa000
       xfifo_dma 78000000.fifo_dma: DMA fault type 131072 at address 0x3811020 on channel 1

Can anyone give me an advice how to fix this problem?
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