| Summary: | Launching weston fails with error "radeon 0000:01:00.0: forbidden register 0x00008040 at 558" | ||
|---|---|---|---|
| Product: | Mesa | Reporter: | Martin Andersson <g02maran> |
| Component: | Drivers/Gallium/r600 | Assignee: | Default DRI bug account <dri-devel> |
| Status: | RESOLVED FIXED | QA Contact: | |
| Severity: | normal | ||
| Priority: | medium | ||
| Version: | unspecified | ||
| Hardware: | x86-64 (AMD64) | ||
| OS: | Linux (All) | ||
| Whiteboard: | |||
| i915 platform: | i915 features: | ||
| Attachments: |
patch
dmesg weston possible fix |
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Created attachment 73743 [details]
dmesg
Created attachment 73744 [details]
weston
This is actually a mesa bug caused by: http://cgit.freedesktop.org/mesa/mesa/commit/?id=24b1206ab2dcd506aaac3ef656aebc8bc20cd27a Created attachment 73753 [details] [review] possible fix The attached mesa patch should fix the issue. Your patch fixes the issue, thanks. |
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Created attachment 73742 [details] patch When i looked up register 0x00008040 i saw that it was defined as WAIT_UNTIL. The function that prints that error is 'evergreen_cs_check_reg' in evergreen_cs.c. Since the WAIT_UNTIL is not present in reg_srcs/cayman (i have a radeon 6950) the cayman_reg_safe_bm test fail and since WAIT_UNTIL is not present in any of the switch cases it hits the default case. But WAIT_UNTIL was present in reg_srcs/evergreen, so i copied the WAIT_UNTIL line from evergreen to cayman. I also copied the rest of the WAIT_UNTIL_POLL* because they seemed related. This fixed the issue for me but i do not know if this is the proper fix. Tested on kernel 3.8.0-rc5 and wayland/weston master and mesa master.