drm/i915: Include instdone[1] in hangcheck
References:
Bug 26691 - Spurious hangcheck whilst executing a long shader over a
large vertex buffer
https://bugs.freedesktop.org/show_bug.cgi?id=26691
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Eric Anholt <eric@anholt.net>
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 21a4af9..70e2527 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -286,6 +286,8 @@
struct timer_list hangcheck_timer;
int hangcheck_count;
uint32_t last_acthd;
+ uint32_t last_instdone;
+ uint32_t last_instdone1;
struct drm_mm vram;
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index fb6b462..85785a8 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -1229,16 +1229,21 @@
{
struct drm_device *dev = (struct drm_device *)data;
drm_i915_private_t *dev_priv = dev->dev_private;
- uint32_t acthd;
+ uint32_t acthd, instdone, instdone1;
/* No reset support on this chip yet. */
if (IS_GEN6(dev))
return;
- if (!IS_I965G(dev))
+ if (!IS_I965G(dev)) {
acthd = I915_READ(ACTHD);
- else
+ instdone = I915_READ(INSTDONE);
+ instdone1 = 0;
+ } else {
acthd = I915_READ(ACTHD_I965);
+ instdone = I915_READ(INSTDONE_I965);
+ instdone1 = I915_READ(INSTDONE1);
+ }
/* If all work is done then ACTHD clearly hasn't advanced. */
if (list_empty(&dev_priv->render_ring.request_list) ||
@@ -1249,21 +1254,24 @@
return;
}
- if (dev_priv->last_acthd == acthd && dev_priv->hangcheck_count > 0) {
- DRM_ERROR("Hangcheck timer elapsed... GPU hung\n");
- i915_handle_error(dev, true);
- return;
- }
+ if (dev_priv->last_acthd == acthd &&
+ dev_priv->last_instdone == instdone &&
+ dev_priv->last_instdone1 == instdone1) {
+ if (dev_priv->hangcheck_count++ > 1) {
+ DRM_ERROR("Hangcheck timer elapsed... GPU hung\n");
+ i915_handle_error(dev, true);
+ return;
+ }
+ } else {
+ dev_priv->hangcheck_count = 0;
+
+ dev_priv->last_acthd = acthd;
+ dev_priv->last_instdone = instdone;
+ dev_priv->last_instdone1 = instdone1;
+ }
/* Reset timer case chip hangs without another request being added */
mod_timer(&dev_priv->hangcheck_timer, jiffies + DRM_I915_HANGCHECK_PERIOD);
-
- if (acthd != dev_priv->last_acthd)
- dev_priv->hangcheck_count = 0;
- else
- dev_priv->hangcheck_count++;
-
- dev_priv->last_acthd = acthd;
}
/* drm_dma.h hooks