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XDMA: Some times xdma engine crashes with irq MAGIC_STOPPED #48

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IgorAmosov opened this issue Jan 29, 2020 · 7 comments
Open

XDMA: Some times xdma engine crashes with irq MAGIC_STOPPED #48

IgorAmosov opened this issue Jan 29, 2020 · 7 comments

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@IgorAmosov
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dmesg_xdma.txt
Hello!
I'am using xdma driver with XDMA IP in Memory Mapped case.
kernel:3.10.0-1062.9.1.el7.x86_64
CentOS 7.7
Some times big transaction crashes with MAGIC_STOPPED irq in dmesg (attached).
I have no idea, what is it.
@bhathaway
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I have also encountered this exact issue. My only clue at this point is that somehow descriptors are being corrupted.

@IgorAmosov
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I downgrade to "version: 2018.3.50" (design in vivado 2019.2) and all is ok

@bhathaway
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@IgorAmosov Did you downgrade the driver source code or Vivado?

@IgorAmosov
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IgorAmosov commented Feb 5, 2020 •
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@IgorAmosov Did you downgrade the driver source code or Vivado?

I'he downgraded driver version from this repo.

@bhathaway
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Please see #49

I would be curious if my bug fix resolves your issue.

@IsaacJT
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IsaacJT commented May 14, 2020

Hi @bhathaway,

I encountered this exact problem and your fix resolved it for me. Thank you very much!

jrtc27 added a commit to jrtc27/connectal that referenced this issue Jun 30, 2020
@jrtc27
libxdma.c: Bug fix Xilinx/dma_ip_drivers#48
7a43fc1 
This is a minimal implementation based on [1] that matches the existing
code style for handling the page crossing edge case. Previously only one
place in the code correctly handled adjacent descriptors crossing a page
boundary, but now that code is copied to the other relevant places too.

We hit this case when attempting to re-load ELF files after a few
attempts, at least with my CheriBSD image.

[1] Xilinx/dma_ip_drivers#49
jameyhicks pushed a commit to cambridgehackers/connectal that referenced this issue Jun 30, 2020
@jrtc27 @jameyhicks
libxdma.c: Bug fix Xilinx/dma_ip_drivers#48
92ee94e 
This is a minimal implementation based on [1] that matches the existing
code style for handling the page crossing edge case. Previously only one
place in the code correctly handled adjacent descriptors crossing a page
boundary, but now that code is copied to the other relevant places too.

We hit this case when attempting to re-load ELF files after a few
attempts, at least with my CheriBSD image.

[1] Xilinx/dma_ip_drivers#49
@hmaarrfk
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Hello,

My name is Mark Harfouche. I am not affiliated with Xilinx in any way. Over the
years of using QDMA, I've been wanted better community organization.

I've created a fork of dma_ip_drivers which I intend to maintain and work with the
community at large to improve.

The fork can be found https://github.com/hmaarrfk/dma_ip_drivers

For now, I am stating the main goals of the repository in
hmaarrfk#2

If you are interested in working together, feel free to open an issue or PR to
my fork.

Best,

Mark

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4 participants
@hmaarrfk @bhathaway @IsaacJT @IgorAmosov