diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 2b16c29ea571..40acdde5f224 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -2225,6 +2225,7 @@ i915_gem_obj_ggtt_pin(struct drm_i915_gem_object *obj, /* i915_gem_context.c */ int __must_check i915_gem_context_init(struct drm_device *dev); void i915_gem_context_fini(struct drm_device *dev); +void i915_gem_context_reset(struct drm_device *dev); int i915_gem_context_open(struct drm_device *dev, struct drm_file *file); void i915_gem_context_close(struct drm_device *dev, struct drm_file *file); int i915_switch_context(struct intel_ring_buffer *ring, diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 254f575b259c..fe17c62c7b09 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -2412,6 +2412,8 @@ void i915_gem_reset(struct drm_device *dev) i915_gem_cleanup_ringbuffer(dev); + i915_gem_context_reset(dev); + i915_gem_restore_fences(dev); } diff --git a/drivers/gpu/drm/i915/i915_gem_context.c b/drivers/gpu/drm/i915/i915_gem_context.c index 5f8bc06e8594..509e460e982e 100644 --- a/drivers/gpu/drm/i915/i915_gem_context.c +++ b/drivers/gpu/drm/i915/i915_gem_context.c @@ -255,6 +255,49 @@ static int create_default_context(struct drm_device *dev) return ret; } +void i915_gem_context_reset(struct drm_device *dev) +{ + struct drm_i915_private *dev_priv = dev->dev_private; + struct intel_ring_buffer *ring; + int i; + + if (!HAS_HW_CONTEXTS(dev)) + return; + + /* Prevent the hardware from restoring the last context (which hung) on + * the next switch */ + for (i = 0; i < I915_NUM_RINGS; i++) { + struct i915_hw_context *dctx; + if (!(INTEL_INFO(dev)->ring_mask & (1<ring[i]; + dctx = ring->default_context; + if (WARN_ON(!dctx)) + continue; + + if (!ring->last_context) + continue; + + if (ring->last_context == dctx) + continue; + + if (i == RCS) { + WARN_ON(i915_gem_obj_ggtt_pin(dctx->obj, + get_context_alignment(dev), + false, false)); + /* Fake a finish/inactive */ + dctx->obj->base.write_domain = 0; + dctx->obj->active = 0; + } + + i915_gem_context_unreference(ring->last_context); + i915_gem_context_reference(dctx); + ring->last_context = dctx; + } +} + int i915_gem_context_init(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private;