For legacy ringbuffer mode, we need the new ordered breadcrumb emission
tried and tested on execlists.
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/intel_ringbuffer.c | 37 +++++++++++++++++++++++++++++++--
1 file changed, 35 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index b5e79ac29ebc..138afed82682 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -1425,6 +1425,40 @@ gen6_add_request(struct drm_i915_gem_request *req)
return 0;
}
+static inline u32 hws_seqno_address(struct intel_engine_cs *engine)
+{
+ return engine->status_page.gfx_addr + I915_GEM_HWS_INDEX_ADDR;
+}
+
+static int
+gen8_render_add_request(struct drm_i915_gem_request *req)
+{
+ struct intel_engine_cs *engine = req->engine;
+ int ret;
+
+ if (engine->semaphore.signal)
+ ret = engine->semaphore.signal(req, 8);
+ else
+ ret = intel_ring_begin(req, 8);
+ if (ret)
+ return ret;
+
+ intel_ring_emit(engine, GFX_OP_PIPE_CONTROL(6));
+ intel_ring_emit(engine, (PIPE_CONTROL_GLOBAL_GTT_IVB |
+ PIPE_CONTROL_CS_STALL |
+ PIPE_CONTROL_QW_WRITE));
+ intel_ring_emit(engine, hws_seqno_address(req->engine));
+ intel_ring_emit(engine, 0);
+ intel_ring_emit(engine, i915_gem_request_get_seqno(req));
+ /* We're thrashing one dword of HWS. */
+ intel_ring_emit(engine, 0);
+ intel_ring_emit(engine, MI_USER_INTERRUPT);
+ intel_ring_emit(engine, MI_NOOP);
+ __intel_ring_advance(engine);
+
+ return 0;
+}
+
static inline bool i915_gem_has_seqno_wrapped(struct drm_device *dev,
u32 seqno)
{
@@ -2746,12 +2780,11 @@ int intel_init_render_ring_buffer(struct drm_device *dev)
}
engine->init_context = intel_rcs_ctx_init;
- engine->add_request = gen6_add_request;
+ engine->add_request = gen8_render_add_request;
engine->flush = gen8_render_ring_flush;
engine->irq_get = gen8_ring_get_irq;
engine->irq_put = gen8_ring_put_irq;
engine->irq_enable_mask = GT_RENDER_USER_INTERRUPT;
- engine->irq_seqno_barrier = gen6_seqno_barrier;
engine->get_seqno = ring_get_seqno;
engine->set_seqno = ring_set_seqno;
if (i915_semaphore_is_enabled(dev)) {
--
2.8.1
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