drm/i915: Record fence registers on error.

[mirror_ubuntu-bionic-kernel.git] / drivers / gpu / drm / i915 / i915_irq.c

diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index 09ac3bbd8165d74ac812c6ecdc34fcfd11921755..de95c7bb6dba88060c6c6bcc1f553383fce74685 100644 (file)
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -581,6 +581,35 @@ static u32 capture_bo_list(struct drm_i915_error_buffer *err,
        return i;
 }
 
+static void i915_gem_record_fences(struct drm_device *dev,
+                                  struct drm_i915_error_state *error)
+{
+       struct drm_i915_private *dev_priv = dev->dev_private;
+       int i;
+
+       /* Fences */
+       switch (INTEL_INFO(dev)->gen) {
+       case 6:
+               for (i = 0; i < 16; i++)
+                       error->fence[i] = I915_READ64(FENCE_REG_SANDYBRIDGE_0 + (i * 8));
+               break;
+       case 5:
+       case 4:
+               for (i = 0; i < 16; i++)
+                       error->fence[i] = I915_READ64(FENCE_REG_965_0 + (i * 8));
+               break;
+       case 3:
+               if (IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev))
+                       for (i = 0; i < 8; i++)
+                               error->fence[i+8] = I915_READ(FENCE_REG_945_8 + (i * 4));
+       case 2:
+               for (i = 0; i < 8; i++)
+                       error->fence[i] = I915_READ(FENCE_REG_830_0 + (i * 4));
+               break;
+
+       }
+}
+
 /**
  * i915_capture_error_state - capture an error record for later analysis
  * @dev: drm device
@@ -656,6 +685,7 @@ static void i915_capture_error_state(struct drm_device *dev)
                error->acthd = I915_READ(ACTHD);
                error->bbaddr = 0;
        }
+       i915_gem_record_fences(dev, error);
 
        bbaddr = i915_ringbuffer_last_batch(dev, &dev_priv->render_ring);