[Bug 59945] New: Launching weston fails with error "radeon 0000:01:00.0: forbidden register 0x00008040 at 558" - bugzilla-daemon

From: bugzilla-daemon@freedesktop.org
To: dri-devel@lists.freedesktop.org
Subject: [Bug 59945] New: Launching weston fails with error "radeon 0000:01:00.0: forbidden register 0x00008040 at 558"
Date: Sun, 27 Jan 2013 21:36:38 +0000	[thread overview]
Message-ID: <bug-59945-502@http.bugs.freedesktop.org/> (raw)

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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: g02maran@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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