freedreno: threaded batch flush

With the state accessed from GMEM+submit factored out of fd_context and
into fd_batch, now it is possible to punt this off to a helper thread.
And more importantly, since there are cases where one context might
force the batch-cache to flush another context's batches (ie. when there
are too many in-flight batches), using a per-context helper thread keeps
various different flushes for a given context serialized.

TODO as with batch-cache, there are a few places where we'll need a
mutex to protect critical sections, which is completely missing at the
moment.

Signed-off-by: Rob Clark <robdclark@gmail.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/src/gallium/drivers/freedreno/freedreno_context.h b/src/gallium/drivers/freedreno/freedreno_context.h
index 7e25e57d43..2d88cdcbd8 100644
--- a/src/gallium/drivers/freedreno/freedreno_context.h
+++ b/src/gallium/drivers/freedreno/freedreno_context.h
@@ -114,6 +114,8 @@ struct fd_context {
 	struct fd_device *dev;
 	struct fd_screen *screen;
 
+	struct util_queue flush_queue;
+
 	struct blitter_context *blitter;
 	struct primconvert_context *primconvert;
 
@@ -161,6 +163,8 @@ struct fd_context {
 	 */
 	struct fd_batch *batch;
 
+	uint32_t last_fence;
+
 	/* Are we in process of shadowing a resource? Used to detect recursion
 	 * in transfer_map, and skip unneeded synchronization.
 	 */