diff options
author | Eric Anholt <eric@anholt.net> | 2011-12-22 14:55:00 -0800 |
---|---|---|
committer | Keith Packard <keithp@keithp.com> | 2012-01-03 09:31:15 -0800 |
commit | 42ff6572e5a4a7414330a4ca91f0335da67deca9 (patch) | |
tree | dc8937a9bd595065cd73cd51a4baab365a96813b /include/drm | |
parent | 7ea29b13e5e3e1e61e612349eb0366efdb6457f3 (diff) | |
download | op-kernel-dev-42ff6572e5a4a7414330a4ca91f0335da67deca9.zip op-kernel-dev-42ff6572e5a4a7414330a4ca91f0335da67deca9.tar.gz |
drm/i915: Work around gen7 BLT ring synchronization issues.
Previous to this commit, testing easily reproduced a failure where the
seqno would apparently arrive after the IRQ associated with it, with test programs as simple as:
for (;;) {
glCopyPixels(0, 0, 1, 1);
glFinish();
}
Various workarounds we've seen for previous generations didn't work to
fix this issue, so until new information comes in, replace the IRQ
waits on the BLT ring with polling.
Signed-off-by: Eric Anholt <eric@anholt.net>
Tested-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Reviewed-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Acked-by: Kenneth Graunke <kenneth@whitecape.org>
Signed-off-by: Keith Packard <keithp@keithp.com>
Diffstat (limited to 'include/drm')
0 files changed, 0 insertions, 0 deletions