drm/i915: split out the gen5 ring irq get/put functions

Now that we have sensibly split up, we can nicely get rid of that ugly
is_gen5 check.

Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index a09e8aa..7e1f221 100644 (file)
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -644,6 +644,35 @@ i915_disable_irq(drm_i915_private_t *dev_priv, u32 mask)
        POSTING_READ(IMR);
 }
 
+static bool
+gen5_ring_get_irq(struct intel_ring_buffer *ring)
+{
+       struct drm_device *dev = ring->dev;
+       drm_i915_private_t *dev_priv = dev->dev_private;
+
+       if (!dev->irq_enabled)
+               return false;
+
+       spin_lock(&ring->irq_lock);
+       if (ring->irq_refcount++ == 0)
+               ironlake_enable_irq(dev_priv, ring->irq_enable_mask);
+       spin_unlock(&ring->irq_lock);
+
+       return true;
+}
+
+static void
+gen5_ring_put_irq(struct intel_ring_buffer *ring)
+{
+       struct drm_device *dev = ring->dev;
+       drm_i915_private_t *dev_priv = dev->dev_private;
+
+       spin_lock(&ring->irq_lock);
+       if (--ring->irq_refcount == 0)
+               ironlake_disable_irq(dev_priv, ring->irq_enable_mask);
+       spin_unlock(&ring->irq_lock);
+}
+
 static bool
 i9xx_ring_get_irq(struct intel_ring_buffer *ring)
 {
@@ -654,13 +683,8 @@ i9xx_ring_get_irq(struct intel_ring_buffer *ring)
                return false;
 
        spin_lock(&ring->irq_lock);
-       if (ring->irq_refcount++ == 0) {
-               if (INTEL_INFO(dev)->gen >= 5)
-                       ironlake_enable_irq(dev_priv,
-                                           ring->irq_enable_mask);
-               else
-                       i915_enable_irq(dev_priv, ring->irq_enable_mask);
-       }
+       if (ring->irq_refcount++ == 0)
+               i915_enable_irq(dev_priv, ring->irq_enable_mask);
        spin_unlock(&ring->irq_lock);
 
        return true;
@@ -673,13 +697,8 @@ i9xx_ring_put_irq(struct intel_ring_buffer *ring)
        drm_i915_private_t *dev_priv = dev->dev_private;
 
        spin_lock(&ring->irq_lock);
-       if (--ring->irq_refcount == 0) {
-               if (INTEL_INFO(dev)->gen >= 5)
-                       ironlake_disable_irq(dev_priv,
-                                            ring->irq_enable_mask);
-               else
-                       i915_disable_irq(dev_priv, ring->irq_enable_mask);
-       }
+       if (--ring->irq_refcount == 0)
+               i915_disable_irq(dev_priv, ring->irq_enable_mask);
        spin_unlock(&ring->irq_lock);
 }
 
@@ -1301,8 +1320,8 @@ int intel_init_render_ring_buffer(struct drm_device *dev)
                ring->add_request = pc_render_add_request;
                ring->flush = render_ring_flush;
                ring->get_seqno = pc_render_get_seqno;
-               ring->irq_get = i9xx_ring_get_irq;
-               ring->irq_put = i9xx_ring_put_irq;
+               ring->irq_get = gen5_ring_get_irq;
+               ring->irq_put = gen5_ring_put_irq;
                ring->irq_enable_mask = GT_USER_INTERRUPT | GT_PIPE_NOTIFY;
        } else {
                ring->add_request = render_ring_add_request;
@@ -1342,8 +1361,8 @@ int intel_render_ring_init_dri(struct drm_device *dev, u64 start, u32 size)
                ring->add_request = pc_render_add_request;
                ring->flush = render_ring_flush;
                ring->get_seqno = pc_render_get_seqno;
-               ring->irq_get = i9xx_ring_get_irq;
-               ring->irq_put = i9xx_ring_put_irq;
+               ring->irq_get = gen5_ring_get_irq;
+               ring->irq_put = gen5_ring_put_irq;
                ring->irq_enable_mask = GT_USER_INTERRUPT | GT_PIPE_NOTIFY;
        } else {
                ring->add_request = render_ring_add_request;
@@ -1418,12 +1437,15 @@ int intel_init_bsd_ring_buffer(struct drm_device *dev)
                ring->flush = bsd_ring_flush;
                ring->add_request = ring_add_request;
                ring->get_seqno = ring_get_seqno;
-               ring->irq_get = i9xx_ring_get_irq;
-               ring->irq_put = i9xx_ring_put_irq;
-               if (IS_GEN5(dev))
+               if (IS_GEN5(dev)) {
                        ring->irq_enable_mask = GT_BSD_USER_INTERRUPT;
-               else
+                       ring->irq_get = gen5_ring_get_irq;
+                       ring->irq_put = gen5_ring_put_irq;
+               } else {
                        ring->irq_enable_mask = I915_BSD_USER_INTERRUPT;
+                       ring->irq_get = i9xx_ring_get_irq;
+                       ring->irq_put = i9xx_ring_put_irq;
+               }
                ring->dispatch_execbuffer = ring_dispatch_execbuffer;
        }
        ring->init = init_ring_common;