diff options
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_ringbuffer.c | 62 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/intel_ringbuffer.h | 2 |
2 files changed, 25 insertions, 39 deletions
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c index 3bff7fb..13cad98 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.c +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c @@ -521,22 +521,20 @@ static bool render_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; - if (atomic_inc_return(&ring->irq_refcount) == 1) { - drm_i915_private_t *dev_priv = dev->dev_private; - unsigned long irqflags; - - spin_lock_irqsave(&dev_priv->irq_lock, irqflags); + spin_lock(&dev_priv->irq_lock); + if (ring->irq_refcount++ == 0) { if (HAS_PCH_SPLIT(dev)) ironlake_enable_irq(dev_priv, GT_PIPE_NOTIFY | GT_USER_INTERRUPT); else i915_enable_irq(dev_priv, I915_USER_INTERRUPT); - spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); } + spin_unlock(&dev_priv->irq_lock); return true; } @@ -545,20 +543,18 @@ static void render_ring_put_irq(struct intel_ring_buffer *ring) { struct drm_device *dev = ring->dev; + drm_i915_private_t *dev_priv = dev->dev_private; - if (atomic_dec_and_test(&ring->irq_refcount)) { - drm_i915_private_t *dev_priv = dev->dev_private; - unsigned long irqflags; - - spin_lock_irqsave(&dev_priv->irq_lock, irqflags); + spin_lock(&dev_priv->irq_lock); + if (--ring->irq_refcount == 0) { if (HAS_PCH_SPLIT(dev)) ironlake_disable_irq(dev_priv, GT_USER_INTERRUPT | GT_PIPE_NOTIFY); else i915_disable_irq(dev_priv, I915_USER_INTERRUPT); - spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); } + spin_unlock(&dev_priv->irq_lock); } void intel_ring_setup_status_page(struct intel_ring_buffer *ring) @@ -619,18 +615,15 @@ static bool ring_get_irq(struct intel_ring_buffer *ring, u32 flag) { struct drm_device *dev = ring->dev; + drm_i915_private_t *dev_priv = dev->dev_private; if (!dev->irq_enabled) return false; - if (atomic_inc_return(&ring->irq_refcount) == 1) { - drm_i915_private_t *dev_priv = dev->dev_private; - unsigned long irqflags; - - spin_lock_irqsave(&dev_priv->irq_lock, irqflags); + spin_lock(&dev_priv->irq_lock); + if (ring->irq_refcount++ == 0) ironlake_enable_irq(dev_priv, flag); - spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); - } + spin_unlock(&dev_priv->irq_lock); return true; } @@ -639,35 +632,30 @@ static void ring_put_irq(struct intel_ring_buffer *ring, u32 flag) { struct drm_device *dev = ring->dev; + drm_i915_private_t *dev_priv = dev->dev_private; - if (atomic_dec_and_test(&ring->irq_refcount)) { - drm_i915_private_t *dev_priv = dev->dev_private; - unsigned long irqflags; - - spin_lock_irqsave(&dev_priv->irq_lock, irqflags); + spin_lock(&dev_priv->irq_lock); + if (--ring->irq_refcount == 0) ironlake_disable_irq(dev_priv, flag); - spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); - } + spin_unlock(&dev_priv->irq_lock); } static bool gen6_ring_get_irq(struct intel_ring_buffer *ring, u32 gflag, u32 rflag) { struct drm_device *dev = ring->dev; + drm_i915_private_t *dev_priv = dev->dev_private; if (!dev->irq_enabled) return false; - if (atomic_inc_return(&ring->irq_refcount) == 1) { - drm_i915_private_t *dev_priv = dev->dev_private; - unsigned long irqflags; - - spin_lock_irqsave(&dev_priv->irq_lock, irqflags); + spin_lock(&dev_priv->irq_lock); + if (ring->irq_refcount++ == 0) { ring->irq_mask &= ~rflag; I915_WRITE_IMR(ring, ring->irq_mask); ironlake_enable_irq(dev_priv, gflag); - spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); } + spin_unlock(&dev_priv->irq_lock); return true; } @@ -676,17 +664,15 @@ static void gen6_ring_put_irq(struct intel_ring_buffer *ring, u32 gflag, u32 rflag) { struct drm_device *dev = ring->dev; + drm_i915_private_t *dev_priv = dev->dev_private; - if (atomic_dec_and_test(&ring->irq_refcount)) { - drm_i915_private_t *dev_priv = dev->dev_private; - unsigned long irqflags; - - spin_lock_irqsave(&dev_priv->irq_lock, irqflags); + spin_lock(&dev_priv->irq_lock); + if (--ring->irq_refcount == 0) { ring->irq_mask |= rflag; I915_WRITE_IMR(ring, ring->irq_mask); ironlake_disable_irq(dev_priv, gflag); - spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); } + spin_unlock(&dev_priv->irq_lock); } static bool diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.h b/drivers/gpu/drm/i915/intel_ringbuffer.h index 9b134b8..6b1d9a5 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.h +++ b/drivers/gpu/drm/i915/intel_ringbuffer.h @@ -55,11 +55,11 @@ struct intel_ring_buffer { int effective_size; struct intel_hw_status_page status_page; + u32 irq_refcount; u32 irq_mask; u32 irq_seqno; /* last seq seem at irq time */ u32 waiting_seqno; u32 sync_seqno[I915_NUM_RINGS-1]; - atomic_t irq_refcount; bool __must_check (*irq_get)(struct intel_ring_buffer *ring); void (*irq_put)(struct intel_ring_buffer *ring); |