@@ -2684,6 +2684,13 @@ static irqreturn_t i965_irq_handler(int irq, void *arg)
unsigned long irqflags;
int irq_received;
int ret = IRQ_NONE, pipe;
+ u32 flip[2] = {
+ I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT,
+ I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT
+ };
+ u32 flip_mask =
+ I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT |
+ I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT;
atomic_inc(&dev_priv->irq_received);
@@ -2692,7 +2699,7 @@ static irqreturn_t i965_irq_handler(int irq, void *arg)
for (;;) {
bool blc_event = false;
- irq_received = iir != 0;
+ irq_received = (iir & ~flip_mask) != 0;
/* Can't rely on pipestat interrupt bit in iir as it might
* have been cleared after the pipestat interrupt was received.
@@ -2739,7 +2746,7 @@ static irqreturn_t i965_irq_handler(int irq, void *arg)
I915_READ(PORT_HOTPLUG_STAT);
}
- I915_WRITE(IIR, iir);
+ I915_WRITE(IIR, iir & ~flip_mask);
new_iir = I915_READ(IIR); /* Flush posted writes */
if (iir & I915_USER_INTERRUPT)
@@ -2747,17 +2754,17 @@ static irqreturn_t i965_irq_handler(int irq, void *arg)
if (iir & I915_BSD_USER_INTERRUPT)
notify_ring(dev, &dev_priv->ring[VCS]);
- if (iir & I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT)
- intel_prepare_page_flip(dev, 0);
-
- if (iir & I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT)
- intel_prepare_page_flip(dev, 1);
-
for_each_pipe(pipe) {
if (pipe_stats[pipe] & PIPE_START_VBLANK_INTERRUPT_STATUS &&
drm_handle_vblank(dev, pipe)) {
- i915_pageflip_stall_check(dev, pipe);
- intel_finish_page_flip(dev, pipe);
+ if (iir & flip[pipe]) {
+ intel_prepare_page_flip(dev, pipe);
+
+ if ((I915_READ(ISR) & flip[pipe]) == 0) {
+ intel_finish_page_flip(dev, pipe);
+ flip_mask &= ~flip[pipe];
+ }
+ }
}
if (pipe_stats[pipe] & PIPE_LEGACY_BLC_EVENT_STATUS)