On Mon, Feb 28, 2022 at 09:29:52PM -0800, Matt Roper wrote:
Platforms with FlatCCS do not use auxiliary planes for compression
control data and thus do not need traditional aux table invalidation
(and the registers no longer even exist).
Original-author: CQ Tang
Signed-off-by: Matt Roper <matthew.d.roper@xxxxxxxxx>
---
drivers/gpu/drm/i915/gt/gen8_engine_cs.c | 28 ++++++++++++++++--------
1 file changed, 19 insertions(+), 9 deletions(-)
diff --git a/drivers/gpu/drm/i915/gt/gen8_engine_cs.c b/drivers/gpu/drm/i915/gt/gen8_engine_cs.c
index 1f8cf4f790b2..13bbbf5d9737 100644
--- a/drivers/gpu/drm/i915/gt/gen8_engine_cs.c
+++ b/drivers/gpu/drm/i915/gt/gen8_engine_cs.c
@@ -231,7 +231,7 @@ int gen12_emit_flush_rcs(struct i915_request *rq, u32 mode)
if (mode & EMIT_INVALIDATE) {
u32 flags = 0;
- u32 *cs;
+ u32 *cs, count;
flags |= PIPE_CONTROL_COMMAND_CACHE_INVALIDATE;
flags |= PIPE_CONTROL_TLB_INVALIDATE;
@@ -246,7 +246,12 @@ int gen12_emit_flush_rcs(struct i915_request *rq, u32 mode)
flags |= PIPE_CONTROL_CS_STALL;
- cs = intel_ring_begin(rq, 8 + 4);
+ if (!HAS_FLAT_CCS(rq->engine->i915))
+ count = 8 + 4;
+ else
+ count = 8;
u32 count = 8;
...
if (!HAS_FLAT_CCS(rq->engine->i915))
count += 4;
would probably be shorter, or even
cs = intel_ring_begin(rq, HAS_FLAT_CCS(...) ? 12 : 8)
but doesn't really matter
Reviewed-by: Lucas De Marchi <lucas.demarchi@xxxxxxxxx>
Lucas De Marchi
