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path: root/drivers/gpu/drm/vmwgfx/vmwgfx_irq.c
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Diffstat (limited to 'drivers/gpu/drm/vmwgfx/vmwgfx_irq.c')
-rw-r--r--drivers/gpu/drm/vmwgfx/vmwgfx_irq.c17
1 files changed, 14 insertions, 3 deletions
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_irq.c b/drivers/gpu/drm/vmwgfx/vmwgfx_irq.c
index 4d7cb539386..e92298a6a38 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_irq.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_irq.c
@@ -64,22 +64,33 @@ static bool vmw_fifo_idle(struct vmw_private *dev_priv, uint32_t sequence)
return (busy == 0);
}
+void vmw_update_sequence(struct vmw_private *dev_priv,
+ struct vmw_fifo_state *fifo_state)
+{
+ __le32 __iomem *fifo_mem = dev_priv->mmio_virt;
+
+ uint32_t sequence = ioread32(fifo_mem + SVGA_FIFO_FENCE);
+
+ if (dev_priv->last_read_sequence != sequence) {
+ dev_priv->last_read_sequence = sequence;
+ vmw_fence_pull(&fifo_state->fence_queue, sequence);
+ }
+}
bool vmw_fence_signaled(struct vmw_private *dev_priv,
uint32_t sequence)
{
- __le32 __iomem *fifo_mem = dev_priv->mmio_virt;
struct vmw_fifo_state *fifo_state;
bool ret;
if (likely(dev_priv->last_read_sequence - sequence < VMW_FENCE_WRAP))
return true;
- dev_priv->last_read_sequence = ioread32(fifo_mem + SVGA_FIFO_FENCE);
+ fifo_state = &dev_priv->fifo;
+ vmw_update_sequence(dev_priv, fifo_state);
if (likely(dev_priv->last_read_sequence - sequence < VMW_FENCE_WRAP))
return true;
- fifo_state = &dev_priv->fifo;
if (!(fifo_state->capabilities & SVGA_FIFO_CAP_FENCE) &&
vmw_fifo_idle(dev_priv, sequence))
return true;