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| author | Imre Deak <imre.deak@intel.com> | 2019-11-14 16:26:21 +0100 |
|---|---|---|
| committer | Joonas Lahtinen <joonas.lahtinen@linux.intel.com> | 2019-11-18 15:36:34 +0100 |
| commit | 2a39b072ee6990512ff0829a4eba5b409dff2746 (patch) | |
| tree | bac7149ef86c29386812fed3159328cdda08279b /drivers/gpu/drm/i915/gt | |
| parent | drm/i915/fbdev: Restore physical addresses for fb_mmap() (diff) | |
| download | linux-2a39b072ee6990512ff0829a4eba5b409dff2746.tar.xz linux-2a39b072ee6990512ff0829a4eba5b409dff2746.zip | |
drm/i915: Restore GT coarse power gating workaround
The workaround to disable coarse power gating is still needed on SKL
GT3/GT4 machines and since the RC6 context corruption was discovered by
the hardware team also on all GEN9 machines. Restore applying the
workaround.
Fixes: c113236718e8 ("drm/i915: Extract GT render sleep (rc6) management")
Testcase: igt/intel_gt_pm_late_selftests/live_rc6_ctx
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Andi Shyti <andi.shyti@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20191114152621.7235-1-imre.deak@intel.com
(cherry picked from commit 980f87a2edb3e7825949ebd0a7e63ab574c20816)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Diffstat (limited to 'drivers/gpu/drm/i915/gt')
| -rw-r--r-- | drivers/gpu/drm/i915/gt/intel_rc6.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/gt/intel_rc6.c b/drivers/gpu/drm/i915/gt/intel_rc6.c index 4bbf28ce29c4..700104b90163 100644 --- a/drivers/gpu/drm/i915/gt/intel_rc6.c +++ b/drivers/gpu/drm/i915/gt/intel_rc6.c @@ -178,8 +178,13 @@ static void gen9_rc6_enable(struct intel_rc6 *rc6) GEN6_RC_CTL_RC6_ENABLE | rc6_mode); - set(uncore, GEN9_PG_ENABLE, - GEN9_RENDER_PG_ENABLE | GEN9_MEDIA_PG_ENABLE); + /* + * WaRsDisableCoarsePowerGating:skl,cnl + * - Render/Media PG need to be disabled with RC6. + */ + if (!NEEDS_WaRsDisableCoarsePowerGating(rc6_to_i915(rc6))) + set(uncore, GEN9_PG_ENABLE, + GEN9_RENDER_PG_ENABLE | GEN9_MEDIA_PG_ENABLE); } static void gen8_rc6_enable(struct intel_rc6 *rc6) |