diff options
| author | Ben Widawsky <[email protected]> | 2015-11-06 18:12:27 -0800 |
|---|---|---|
| committer | Ben Widawsky <[email protected]> | 2015-11-11 18:13:19 -0800 |
| commit | 55314c5be4cbf933ab7fbd20f6aa49207e04c946 (patch) | |
| tree | e05abf9b11a38ce034a46e8e57ad03d1aa564fb8 | |
| parent | c4182bb9b0897b4a4ac4f06b54fc7f6a2ddeb105 (diff) | |
i965/skl/gt4: Fix URB programming restriction.
The comment in the code details the restriction. Thanks to Ken for having a very
helpful conversation with me, and spotting the blurb in the link I sent him :P.
There are still stability problems for me on GT4, but this definitely helps with
some of the failures.
v2: Comment fixes
Cc: [email protected]
Reviewed-by: Jordan Justen <[email protected]>
Reviewed-by: Kenneth Graunke <[email protected]>
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_device_info.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_device_info.c b/src/mesa/drivers/dri/i965/brw_device_info.c index 2ebc0845300..45505507be7 100644 --- a/src/mesa/drivers/dri/i965/brw_device_info.c +++ b/src/mesa/drivers/dri/i965/brw_device_info.c @@ -337,6 +337,15 @@ static const struct brw_device_info brw_device_info_skl_gt3 = { static const struct brw_device_info brw_device_info_skl_gt4 = { GEN9_FEATURES, .gt = 4, + /* From the "L3 Allocation and Programming" documentation: + * + * "URB is limited to 1008KB due to programming restrictions. This is not a + * restriction of the L3 implementation, but of the FF and other clients. + * Therefore, in a GT4 implementation it is possible for the programmed + * allocation of the L3 data array to provide 3*384KB=1152KB for URB, but + * only 1008KB of this will be used." + */ + .urb.size = 1008 / 3, }; static const struct brw_device_info brw_device_info_bxt = { |