https://bugs.freedesktop.org/show_bug.cgi?id=59945
Priority: medium
Bug ID: 59945
Assignee: dri-devel@lists.freedesktop.org
Summary: Launching weston fails with error "radeon
0000:01:00.0: forbidden register 0x00008040 at 558"
Severity: normal
Classification: Unclassified
OS: Linux (All)
Reporter: g02ma...@gmail.com
Hardware: x86-64 (AMD64)
Status: NEW
Version: XOrg CVS
Component: DRM/Radeon
Product: DRI
Created attachment 73742
--> https://bugs.freedesktop.org/attachment.cgi?id=73742&action=edit
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.
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