From: Ben Widawsky <b...@bwidawsk.net>
In the new execbuf code we want to track buffers using the vmas even
before they're all properly mapped. Which means that bind_to_vm needs
to deal with buffers which have preallocated vmas which aren't yet
bound.
This patch implements this prep work and adjusts our WARN/BUG checks.
Signed-off-by: Ben Widawsky <b...@bwidawsk.net>
[danvet: Split out from Ben's big execbuf patch. Also move one BUG
back to its original place to deflate the diff a notch.]
Signed-off-by: Daniel Vetter <daniel.vet...@ffwll.ch>
---
drivers/gpu/drm/i915/i915_drv.h | 3 +++
drivers/gpu/drm/i915/i915_gem.c | 23 +++++++++++++++++------
2 files changed, 20 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index b2b9836..4bd66e9 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1914,6 +1914,9 @@ unsigned long i915_gem_obj_size(struct
drm_i915_gem_object *o,
struct i915_address_space *vm);
struct i915_vma *i915_gem_obj_to_vma(struct drm_i915_gem_object *obj,
struct i915_address_space *vm);
+struct i915_vma *
+i915_gem_obj_lookup_or_create_vma(struct drm_i915_gem_object *obj,
+ struct i915_address_space *vm);
/* Some GGTT VM helpers */
#define obj_to_ggtt(obj) \
(&((struct drm_i915_private *)(obj)->base.dev->dev_private)->gtt.base)
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 122c6b0..d8f322e 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -3124,9 +3124,6 @@ i915_gem_object_bind_to_vm(struct drm_i915_gem_object
*obj,
struct i915_vma *vma;
int ret;
- if (WARN_ON(!list_empty(&obj->vma_list)))
- return -EBUSY;
-
fence_size = i915_gem_get_gtt_size(dev,
obj->base.size,
obj->tiling_mode);
@@ -3165,16 +3162,17 @@ i915_gem_object_bind_to_vm(struct drm_i915_gem_object
*obj,
i915_gem_object_pin_pages(obj);
- /* FIXME: For now we only ever use 1 VMA per object */
BUG_ON(!i915_is_ggtt(vm));
- WARN_ON(!list_empty(&obj->vma_list));
- vma = i915_gem_vma_create(obj, vm);
+ vma = i915_gem_obj_lookup_or_create_vma(obj, vm);
if (IS_ERR(vma)) {
ret = PTR_ERR(vma);
goto err_unpin;
}
+ /* For now we only ever use 1 vma per object */
+ WARN_ON(!list_is_singular(&obj->vma_list));
+
search_free:
ret = drm_mm_insert_node_in_range_generic(&vm->mm, &vma->node,
size, alignment,
@@ -4883,3 +4881,16 @@ struct i915_vma *i915_gem_obj_to_vma(struct
drm_i915_gem_object *obj,
return NULL;
}
+
+struct i915_vma *
+i915_gem_obj_lookup_or_create_vma(struct drm_i915_gem_object *obj,
+ struct i915_address_space *vm)
+{
+ struct i915_vma *vma;
+
+ vma = i915_gem_obj_to_vma(obj, vm);
+ if (!vma)
+ vma = i915_gem_vma_create(obj, vm);
+
+ return vma;
+}
--
1.8.4.rc1
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