Mesa (master): anv: Implement Gen12 workaround for non pipelined state

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Module: Mesa
Branch: master
Commit: b34422db5e6693a8651364556b49a5c3a3b2300a
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=b34422db5e6693a8651364556b49a5c3a3b2300a

Author: Lionel Landwerlin <lionel.g.landwerlin at intel.com>
Date:   Mon Jan 13 17:50:36 2020 +0200

anv: Implement Gen12 workaround for non pipelined state

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin at intel.com>
Reviewed-by: Jordan Justen <jordan.l.justen at intel.com>
Tested-by: Marge Bot <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3365>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3365>

---

 src/intel/vulkan/genX_cmd_buffer.c | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/src/intel/vulkan/genX_cmd_buffer.c b/src/intel/vulkan/genX_cmd_buffer.c
index 7f1d5ae4969..addd5e80b49 100644
--- a/src/intel/vulkan/genX_cmd_buffer.c
+++ b/src/intel/vulkan/genX_cmd_buffer.c
@@ -76,6 +76,20 @@ genX(cmd_buffer_emit_state_base_address)(struct anv_cmd_buffer *cmd_buffer)
 #endif
    }
 
+#if GEN_GEN == 12
+   /* GEN:BUG:1607854226:
+    *
+    *  Workaround the non pipelined state not applying in MEDIA/GPGPU pipeline
+    *  mode by putting the pipeline temporarily in 3D mode.
+    */
+   if (cmd_buffer->state.current_pipeline != _3D) {
+      anv_batch_emit(&cmd_buffer->batch, GENX(PIPELINE_SELECT), ps) {
+         ps.MaskBits = 3;
+         ps.PipelineSelection = _3D;
+      }
+   }
+#endif
+
    anv_batch_emit(&cmd_buffer->batch, GENX(STATE_BASE_ADDRESS), sba) {
       sba.GeneralStateBaseAddress = (struct anv_address) { NULL, 0 };
       sba.GeneralStateMOCS = mocs;
@@ -155,6 +169,19 @@ genX(cmd_buffer_emit_state_base_address)(struct anv_cmd_buffer *cmd_buffer)
 #  endif
    }
 
+#if GEN_GEN == 12
+   /* GEN:BUG:1607854226:
+    *
+    *  Put the pipeline back into compute mode.
+    */
+   if (cmd_buffer->state.current_pipeline != _3D) {
+      anv_batch_emit(&cmd_buffer->batch, GENX(PIPELINE_SELECT), ps) {
+         ps.MaskBits = 3;
+         ps.PipelineSelection = cmd_buffer->state.current_pipeline;
+      }
+   }
+#endif
+
    /* After re-setting the surface state base address, we have to do some
     * cache flusing so that the sampler engine will pick up the new
     * SURFACE_STATE objects and binding tables. From the Broadwell PRM,