diff options
| author | Keith Packard <keithp@keithp.com> | 2008-05-05 22:09:34 -0700 |
|---|---|---|
| committer | Keith Packard <keithp@keithp.com> | 2008-05-05 22:09:34 -0700 |
| commit | ed6657fa8e7977b19bb836782ac8e87f0f703cef (patch) | |
| tree | 4789a9233fd81b4604bcb642cbf727f0629d42a4 /shared-core | |
| parent | 2c8f970baaba9c72c882677f40ce8271bff03bac (diff) | |
Monitor ACTHD register while polling for idle ring.
When batch buffers are executing, the ring may be stuck for a long time.
Monitor the ACTHD pointer which will show if the execution engine is
actually hung.
Diffstat (limited to 'shared-core')
| -rw-r--r-- | shared-core/i915_dma.c | 24 |
1 files changed, 21 insertions, 3 deletions
diff --git a/shared-core/i915_dma.c b/shared-core/i915_dma.c index 4bf37325..d881a231 100644 --- a/shared-core/i915_dma.c +++ b/shared-core/i915_dma.c @@ -41,10 +41,14 @@ int i915_wait_ring(struct drm_device * dev, int n, const char *caller) drm_i915_private_t *dev_priv = dev->dev_private; drm_i915_ring_buffer_t *ring = &(dev_priv->ring); u32 last_head = I915_READ(LP_RING + RING_HEAD) & HEAD_ADDR; + u32 acthd_reg = IS_I965G(dev) ? I965REG_ACTHD : I915REG_ACTHD; + u32 last_acthd = I915_READ(acthd_reg); + u32 acthd; int i; - for (i = 0; i < 10000; i++) { + for (i = 0; i < 100000; i++) { ring->head = I915_READ(LP_RING + RING_HEAD) & HEAD_ADDR; + acthd = I915_READ(acthd_reg); ring->space = ring->head - (ring->tail + 8); if (ring->space < 0) ring->space += ring->Size; @@ -54,8 +58,12 @@ int i915_wait_ring(struct drm_device * dev, int n, const char *caller) if (ring->head != last_head) i = 0; + if (acthd != last_acthd) + i = 0; + last_head = ring->head; - DRM_UDELAY(1); + last_acthd = acthd; + DRM_UDELAY(10); } return -EBUSY; @@ -714,9 +722,19 @@ void i915_dispatch_flip(struct drm_device * dev, int planes, int sync) int i915_quiescent(struct drm_device *dev) { drm_i915_private_t *dev_priv = dev->dev_private; + int ret; i915_kernel_lost_context(dev); - return i915_wait_ring(dev, dev_priv->ring.Size - 8, __FUNCTION__); + ret = i915_wait_ring(dev, dev_priv->ring.Size - 8, __FUNCTION__); + if (ret) + { + i915_kernel_lost_context (dev); + DRM_ERROR ("not quiescent head %08x tail %08x space %08x\n", + dev_priv->ring.head, + dev_priv->ring.tail, + dev_priv->ring.space); + } + return ret; } static int i915_flush_ioctl(struct drm_device *dev, void *data, |