[Intel-gfx] [PATCH 3/5] drm/i915: Dump PGTBL_ER on gen2/3/4 error interrupt

[Ville Syrjala]

From: Ville Syrjälä <ville.syrjala at linux.intel.com>

PGTBL_ER contains the individual reasons for the page table
error interrupt. Dump it out.

Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/i915/i915_irq.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index b45d426a5bd5..0e90c348175e 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -3539,6 +3539,9 @@ static void i8xx_error_irq_handler(struct drm_i915_private *dev_priv,
 	if (eir_stuck)
 		drm_dbg(&dev_priv->drm, "EIR stuck: 0x%04x, masked\n",
 			eir_stuck);
+
+	drm_dbg(&dev_priv->drm, "PGTBL_ER: 0x%08x\n",
+		intel_uncore_read(&dev_priv->uncore, PGTBL_ER));
 }
 
 static void i9xx_error_irq_ack(struct drm_i915_private *dev_priv,
@@ -3576,6 +3579,9 @@ static void i9xx_error_irq_handler(struct drm_i915_private *dev_priv,
 	if (eir_stuck)
 		drm_dbg(&dev_priv->drm, "EIR stuck: 0x%08x, masked\n",
 			eir_stuck);
+
+	drm_dbg(&dev_priv->drm, "PGTBL_ER: 0x%08x\n",
+		intel_uncore_read(&dev_priv->uncore, PGTBL_ER));
 }
 
 static irqreturn_t i8xx_irq_handler(int irq, void *arg)
-- 
2.39.1