[Intel-gfx] [PATCH 21/53] drm/i915/bdw: GEN-specific logical ring set/get seqno

[oscar.mateo at intel.com]

From: Oscar Mateo <oscar.mateo at intel.com>

No mistery here: the seqno is still retrieved from the engine's
HW status page (the one in the default context. For the moment,
I see no reason to worry about other context's HWS page).

Signed-off-by: Oscar Mateo <oscar.mateo at intel.com>
---
 drivers/gpu/drm/i915/intel_lrc.c | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
index b0da0bc..6c62ae5 100644
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -129,6 +129,16 @@ static int gen8_init_render_ring(struct intel_engine_cs *ring)
 	return ret;
 }
 
+static u32 gen8_get_seqno(struct intel_engine_cs *ring, bool lazy_coherency)
+{
+	return intel_read_status_page(ring, I915_GEM_HWS_INDEX);
+}
+
+static void gen8_set_seqno(struct intel_engine_cs *ring, u32 seqno)
+{
+	intel_write_status_page(ring, I915_GEM_HWS_INDEX, seqno);
+}
+
 void intel_logical_ring_cleanup(struct intel_engine_cs *ring)
 {
 	if (!intel_ring_initialized(ring))
@@ -201,6 +211,8 @@ static int logical_render_ring_init(struct drm_device *dev)
 
 	ring->init = gen8_init_render_ring;
 	ring->cleanup = intel_fini_pipe_control;
+	ring->get_seqno = gen8_get_seqno;
+	ring->set_seqno = gen8_set_seqno;
 
 	return logical_ring_init(dev, ring);
 }
@@ -217,6 +229,8 @@ static int logical_bsd_ring_init(struct drm_device *dev)
 		GT_RENDER_USER_INTERRUPT << GEN8_VCS1_IRQ_SHIFT;
 
 	ring->init = gen8_init_common_ring;
+	ring->get_seqno = gen8_get_seqno;
+	ring->set_seqno = gen8_set_seqno;
 
 	return logical_ring_init(dev, ring);
 }
@@ -233,6 +247,8 @@ static int logical_bsd2_ring_init(struct drm_device *dev)
 		GT_RENDER_USER_INTERRUPT << GEN8_VCS2_IRQ_SHIFT;
 
 	ring->init = gen8_init_common_ring;
+	ring->get_seqno = gen8_get_seqno;
+	ring->set_seqno = gen8_set_seqno;
 
 	return logical_ring_init(dev, ring);
 }
@@ -249,6 +265,8 @@ static int logical_blt_ring_init(struct drm_device *dev)
 		GT_RENDER_USER_INTERRUPT << GEN8_BCS_IRQ_SHIFT;
 
 	ring->init = gen8_init_common_ring;
+	ring->get_seqno = gen8_get_seqno;
+	ring->set_seqno = gen8_set_seqno;
 
 	return logical_ring_init(dev, ring);
 }
@@ -265,6 +283,8 @@ static int logical_vebox_ring_init(struct drm_device *dev)
 		GT_RENDER_USER_INTERRUPT << GEN8_VECS_IRQ_SHIFT;
 
 	ring->init = gen8_init_common_ring;
+	ring->get_seqno = gen8_get_seqno;
+	ring->set_seqno = gen8_set_seqno;
 
 	return logical_ring_init(dev, ring);
 }
-- 
1.9.0