drm/i915/bdw: GEN-specific logical ring set/get seqno

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@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 20 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
index 1a1f5f98f05b..c9518c6261de 100644
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -151,6 +151,16 @@ 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))
@@ -223,6 +233,8 @@ 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);
 }
@@ -239,6 +251,8 @@ 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);
 }
@@ -255,6 +269,8 @@ 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);
 }
@@ -271,6 +287,8 @@ 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);
 }
@@ -287,6 +305,8 @@ 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);
 }