[Mesa-dev] [PATCH 1/2] gallium/radeon: always return the last SDMA fence on SDMA flush if needed

[Marek Olšák]

From: Marek Olšák <marek.ol...@amd.com>

---
 src/gallium/drivers/radeon/r600_pipe_common.c | 11 +++++++----
 src/gallium/drivers/radeon/r600_pipe_common.h |  1 +
 2 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/src/gallium/drivers/radeon/r600_pipe_common.c 
b/src/gallium/drivers/radeon/r600_pipe_common.c
index 0ad3684..56977c0 100644
--- a/src/gallium/drivers/radeon/r600_pipe_common.c
+++ b/src/gallium/drivers/radeon/r600_pipe_common.c
@@ -192,13 +192,15 @@ static void r600_flush_dma_ring(void *ctx, unsigned flags,
        struct r600_common_context *rctx = (struct r600_common_context *)ctx;
        struct radeon_winsys_cs *cs = rctx->rings.dma.cs;
 
-       if (!cs->cdw) {
-               return;
-       }
+       if (!cs->cdw)
+               goto done;
 
        rctx->rings.dma.flushing = true;
-       rctx->ws->cs_flush(cs, flags, fence, 0);
+       rctx->ws->cs_flush(cs, flags, &rctx->last_sdma_fence, 0);
        rctx->rings.dma.flushing = false;
+done:
+       if (fence)
+               rctx->ws->fence_reference(fence, rctx->last_sdma_fence);
 }
 
 static enum pipe_reset_status r600_get_reset_status(struct pipe_context *ctx)
@@ -297,6 +299,7 @@ void r600_common_context_cleanup(struct r600_common_context 
*rctx)
        if (rctx->allocator_so_filled_size) {
                u_suballocator_destroy(rctx->allocator_so_filled_size);
        }
+       rctx->ws->fence_reference(&rctx->last_sdma_fence, NULL);
 }
 
 void r600_context_add_resource_size(struct pipe_context *ctx, struct 
pipe_resource *r)
diff --git a/src/gallium/drivers/radeon/r600_pipe_common.h 
b/src/gallium/drivers/radeon/r600_pipe_common.h
index c300c0b..b7f1a23 100644
--- a/src/gallium/drivers/radeon/r600_pipe_common.h
+++ b/src/gallium/drivers/radeon/r600_pipe_common.h
@@ -384,6 +384,7 @@ struct r600_common_context {
        enum radeon_family              family;
        enum chip_class                 chip_class;
        struct r600_rings               rings;
+       struct pipe_fence_handle        *last_sdma_fence;
        unsigned                        initial_gfx_cs_size;
        unsigned                        gpu_reset_counter;
 
-- 
2.1.4

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