diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 0cbcb9f54e7d2..f1acd1889d377 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -933,6 +933,45 @@ void i915_gem_runtime_suspend(struct drm_i915_private *i915) } } +static bool +discard_ggtt_vma(struct i915_vma *vma, const struct i915_ggtt_view *view) +{ + const struct i915_ggtt_view discard = { + .type = I915_GGTT_VIEW_PARTIAL, + }; + struct drm_i915_gem_object *obj = vma->obj; + + spin_lock(&obj->vma.lock); + if (i915_vma_compare(vma, vma->vm, &discard)) { + struct rb_node *rb, **p; + + rb_erase(&vma->obj_node, &obj->vma.tree); + vma->ggtt_view = discard; + GEM_BUG_ON(i915_vma_compare(vma, vma->vm, view)); + + rb = NULL; + p = &obj->vma.tree.rb_node; + while (*p) { + struct i915_vma *pos; + long cmp; + + rb = *p; + pos = rb_entry(rb, struct i915_vma, obj_node); + + cmp = i915_vma_compare(pos, vma->vm, &discard); + if (cmp < 0) + p = &rb->rb_right; + else + p = &rb->rb_left; + } + rb_link_node(&vma->obj_node, rb, p); + rb_insert_color(&vma->obj_node, &obj->vma.tree); + } + spin_unlock(&obj->vma.lock); + + return i915_vma_compare(vma, vma->vm, view); +} + struct i915_vma * i915_gem_object_ggtt_pin(struct drm_i915_gem_object *obj, const struct i915_ggtt_view *view, @@ -979,6 +1018,7 @@ i915_gem_object_ggtt_pin(struct drm_i915_gem_object *obj, return ERR_PTR(-ENOSPC); } +new_vma: vma = i915_vma_instance(obj, &ggtt->vm, view); if (IS_ERR(vma)) return vma; @@ -993,6 +1033,11 @@ i915_gem_object_ggtt_pin(struct drm_i915_gem_object *obj, return ERR_PTR(-ENOSPC); } + if (i915_vma_is_pinned(vma) || i915_vma_is_active(vma)) { + if (discard_ggtt_vma(vma, view)) + goto new_vma; + } + ret = i915_vma_unbind(vma); if (ret) return ERR_PTR(ret);