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| author | Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com> | 2020-03-09 14:10:57 -0700 |
|---|---|---|
| committer | Lionel Landwerlin <lionel.g.landwerlin@intel.com> | 2020-03-18 00:30:52 +0200 |
| commit | a639b0c15065df930467695b76ef38d5edaed049 (patch) | |
| tree | 7e1119c6b71e44e0e2b32ff286ce1d502a82377f /drivers/gpu/drm/i915/i915_perf.c | |
| parent | 500f9ac3025107a84e0c00d960a6c852efde83cc (diff) | |
| download | linux-a639b0c15065df930467695b76ef38d5edaed049.tar.gz | |
drm/i915/perf: Invalidate OA TLB on when closing perf stream
On running several back to back perf capture sessions involving closing
and opening the perf stream, invalid OA reports are seen in the
beginning of the OA buffer in some sessions. Fix this by invalidating OA
TLB when the perf stream is closed or disabled on gen12.
Signed-off-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Fixes: 00a7f0d7155c ("drm/i915/tgl: Add perf support on TGL")
Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200309211057.38575-1-umesh.nerlige.ramappa@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/i915_perf.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_perf.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_perf.c b/drivers/gpu/drm/i915/i915_perf.c index 4611f72cd036..3222f6cd8255 100644 --- a/drivers/gpu/drm/i915/i915_perf.c +++ b/drivers/gpu/drm/i915/i915_perf.c @@ -2686,6 +2686,14 @@ static void gen12_oa_disable(struct i915_perf_stream *stream) 50)) drm_err(&stream->perf->i915->drm, "wait for OA to be disabled timed out\n"); + + intel_uncore_write(uncore, GEN12_OA_TLB_INV_CR, 1); + if (intel_wait_for_register(uncore, + GEN12_OA_TLB_INV_CR, + 1, 0, + 50)) + drm_err(&stream->perf->i915->drm, + "wait for OA tlb invalidate timed out\n"); } /** |