Skip to content
This repository has been archived by the owner on Sep 27, 2024. It is now read-only.

[llio] PCIe DMA reset not working #154

Open
lerwys opened this issue Apr 3, 2017 · 0 comments
Open

[llio] PCIe DMA reset not working #154

lerwys opened this issue Apr 3, 2017 · 0 comments
Labels
bug

Comments

@lerwys
Copy link
Contributor

lerwys commented Apr 3, 2017

Problem: Trying to reset the DMA engine does not result in any effect. The most critical of them is
not clearing the DONE bit, causing us to detect an invalid finished DMA transaction.

For now, we must check the DONE and BUSY bits in order to detect a DMA finished status. The DONE bit is always 1, so maybe we need to check FPGA reset signal.
@lerwys lerwys added the bug label Apr 3, 2017
lerwys added a commit that referenced this issue Apr 3, 2017
@lerwys
libs/llio: workaround to fix DMA wait completion
f46f687 
For now, we must wait for BUSY bit to go down,
as DONE is always 1.

This is related to github issue #154.
Sign up for free to subscribe to this conversation on GitHub. Already have an account? Sign in.
Assignees
No one assigned
Labels
bug
Projects
None yet
Milestone
No milestone
Development

No branches or pull requests
1 participant
@lerwys