On Mon, Jul 08, 2013 at 11:08:38PM -0700, Ben Widawsky wrote:
> formerly: "drm/i915: Create VMAs (part 3.5) - map and fenceable
> tracking"
>
> The map_and_fenceable tracking is per object. GTT mapping, and fences
> only apply to global GTT. As such, object operations which are not
> performed on the global GTT should not effect mappable or fenceable
> characteristics.
>
> Functionally, this commit could very well be squashed in to the previous
> patch which updated object operations to take a VM argument. This
> commit is split out because it's a bit tricky (or at least it was for
> me).
> Signed-off-by: Ben Widawsky <b...@bwidawsk.net>
> ---
> drivers/gpu/drm/i915/i915_gem.c | 9 ++++++---
> 1 file changed, 6 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
> index 21015cd..501c590 100644
> --- a/drivers/gpu/drm/i915/i915_gem.c
> +++ b/drivers/gpu/drm/i915/i915_gem.c
> @@ -2635,7 +2635,7 @@ i915_gem_object_unbind(struct drm_i915_gem_object *obj,
>
> trace_i915_gem_object_unbind(obj, vm);
>
> - if (obj->has_global_gtt_mapping)
> + if (obj->has_global_gtt_mapping && i915_is_ggtt(vm))
> i915_gem_gtt_unbind_object(obj);
Wont this part be done as part of the global gtt clear_range callback?
> if (obj->has_aliasing_ppgtt_mapping) {
> i915_ppgtt_unbind_object(dev_priv->mm.aliasing_ppgtt, obj);
And I have a hunch that we should shovel the aliasing ppgtt clearing into
the ggtt write_ptes/clear_range callbacks, too. Once all this has settled
at least.
> @@ -2646,7 +2646,8 @@ i915_gem_object_unbind(struct drm_i915_gem_object *obj,
>
> list_del(&obj->mm_list);
> /* Avoid an unnecessary call to unbind on rebind. */
> - obj->map_and_fenceable = true;
> + if (i915_is_ggtt(vm))
> + obj->map_and_fenceable = true;
>
> vma = i915_gem_obj_to_vma(obj, vm);
> list_del(&vma->vma_link);
> @@ -3213,7 +3214,9 @@ search_free:
> i915_is_ggtt(vm) &&
> vma->node.start + obj->base.size <= dev_priv->gtt.mappable_end;
>
> - obj->map_and_fenceable = mappable && fenceable;
> + /* Map and fenceable only changes if the VM is the global GGTT */
> + if (i915_is_ggtt(vm))
> + obj->map_and_fenceable = mappable && fenceable;
>
> trace_i915_gem_object_bind(obj, vm, map_and_fenceable);
> i915_gem_verify_gtt(dev);
> --
> 1.8.3.2
>
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--
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch
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