- if (intel->gen >= 6) {
- BEGIN_BATCH(8);
-
- /* workaround: CS stall required before depth stall. */
- OUT_BATCH(_3DSTATE_PIPE_CONTROL);
- OUT_BATCH(PIPE_CONTROL_CS_STALL);
- OUT_BATCH(0); /* write address */
- OUT_BATCH(0); /* write data */
-
- OUT_BATCH(_3DSTATE_PIPE_CONTROL);
- OUT_BATCH(PIPE_CONTROL_DEPTH_STALL |
- PIPE_CONTROL_WRITE_DEPTH_COUNT);
- OUT_RELOC(brw->query.bo,
- I915_GEM_DOMAIN_INSTRUCTION, I915_GEM_DOMAIN_INSTRUCTION,
- PIPE_CONTROL_GLOBAL_GTT_WRITE |
- ((brw->query.index * 2) * sizeof(uint64_t)));
- OUT_BATCH(0);
- ADVANCE_BATCH();
-
- } else {
- BEGIN_BATCH(4);
- OUT_BATCH(_3DSTATE_PIPE_CONTROL |
- PIPE_CONTROL_DEPTH_STALL |
- PIPE_CONTROL_WRITE_DEPTH_COUNT);
- /* This object could be mapped cacheable, but we don't have an exposed
- * mechanism to support that. Since it's going uncached, tell GEM that
- * we're writing to it. The usual clflush should be all that's required
- * to pick up the results.
- */
- OUT_RELOC(brw->query.bo,
- I915_GEM_DOMAIN_INSTRUCTION, I915_GEM_DOMAIN_INSTRUCTION,
- PIPE_CONTROL_GLOBAL_GTT_WRITE |
- ((brw->query.index * 2) * sizeof(uint64_t)));
- OUT_BATCH(0);
- OUT_BATCH(0);
- ADVANCE_BATCH();
- }