radeonsi: remove flushes at the beginning and end of IBs done by the kernel

Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>

diff --git a/src/gallium/drivers/radeonsi/si_hw_context.c b/src/gallium/drivers/radeonsi/si_hw_context.c
index 5ab20d8..7fc58a6 100644 (file)
--- a/src/gallium/drivers/radeonsi/si_hw_context.c
+++ b/src/gallium/drivers/radeonsi/si_hw_context.c
@@ -114,12 +114,13 @@ void si_context_gfx_flush(void *context, unsigned flags,
 
        r600_preflush_suspend_features(&ctx->b);
 
-       ctx->b.flags |= SI_CONTEXT_FLUSH_AND_INV_FRAMEBUFFER |
-                       SI_CONTEXT_INV_VMEM_L1 |
-                       SI_CONTEXT_INV_GLOBAL_L2 |
-                       SI_CONTEXT_CS_PARTIAL_FLUSH |
-                       /* this is probably not needed anymore */
+       ctx->b.flags |= SI_CONTEXT_CS_PARTIAL_FLUSH |
                        SI_CONTEXT_PS_PARTIAL_FLUSH;
+       /* The kernel doesn't flush TC for VI correctly (need TC_WB_ACTION_ENA). */
+       if (ctx->b.chip_class == VI)
+               ctx->b.flags |= SI_CONTEXT_INV_GLOBAL_L2 |
+                               SI_CONTEXT_INV_VMEM_L1;
+
        si_emit_cache_flush(ctx, NULL);
 
        /* force to keep tiling flags */
@@ -184,13 +185,12 @@ void si_begin_new_cs(struct si_context *ctx)
        if (ctx->trace_buf)
                si_trace_emit(ctx);
 
-       /* Flush read caches at the beginning of CS. */
-       ctx->b.flags |= SI_CONTEXT_FLUSH_AND_INV_FRAMEBUFFER |
-                       SI_CONTEXT_INV_VMEM_L1 |
-                       SI_CONTEXT_INV_GLOBAL_L2 |
-                       SI_CONTEXT_INV_SMEM_L1 |
-                       SI_CONTEXT_INV_ICACHE |
-                       R600_CONTEXT_START_PIPELINE_STATS;
+       /* Flush read caches at the beginning of CS not flushed by the kernel. */
+       if (ctx->b.chip_class >= CIK)
+               ctx->b.flags |= SI_CONTEXT_INV_SMEM_L1 |
+                               SI_CONTEXT_INV_ICACHE;
+
+       ctx->b.flags |= R600_CONTEXT_START_PIPELINE_STATS;
 
        /* set all valid group as dirty so they get reemited on
         * next draw command