In order to ensure constant caches are invalidated properly with a0, we need extra hdc flush after invalidation.
v2: use IS_TGL_REVID (Chris) References: HSDES#1604544889 Signed-off-by: Mika Kuoppala <[email protected]> --- drivers/gpu/drm/i915/gt/intel_lrc.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/drivers/gpu/drm/i915/gt/intel_lrc.c b/drivers/gpu/drm/i915/gt/intel_lrc.c index 27b5259f2f66..5e98114a07a1 100644 --- a/drivers/gpu/drm/i915/gt/intel_lrc.c +++ b/drivers/gpu/drm/i915/gt/intel_lrc.c @@ -3254,6 +3254,26 @@ static int gen12_emit_flush_render(struct i915_request *request, *cs++ = preparser_disable(false); intel_ring_advance(request, cs); + + /* + * Wa_1604544889:tgl + */ + if (IS_TGL_REVID(request->i915, TGL_REVID_A0, TGL_REVID_A0)) { + flags = 0; + flags |= PIPE_CONTROL_CS_STALL; + flags |= PIPE_CONTROL_HDC_PIPELINE_FLUSH; + + flags |= PIPE_CONTROL_STORE_DATA_INDEX; + flags |= PIPE_CONTROL_QW_WRITE; + + cs = intel_ring_begin(request, 6); + if (IS_ERR(cs)) + return PTR_ERR(cs); + + cs = gen8_emit_pipe_control(cs, flags, + LRC_PPHWSP_SCRATCH_ADDR); + intel_ring_advance(request, cs); + } } return 0; -- 2.17.1 _______________________________________________ Intel-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/intel-gfx
