In many places, we wish to store the VMA in preference to the object
itself and so being able to create the persistent VMA is useful.
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/i915_drv.h | 2 ++
drivers/gpu/drm/i915/i915_gem_gtt.c | 10 ++++++++++
drivers/gpu/drm/i915/i915_gem_gtt.h | 5 +++++
3 files changed, 17 insertions(+)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 826486d03e8e..2d8f32cd726d 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -3903,4 +3903,6 @@ static inline bool __i915_request_irq_complete(struct drm_i915_gem_request *req)
return false;
}
+#define nullify(ptr) ({typeof(*ptr) T = *(ptr); *(ptr) = NULL; T;})
+
#endif
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
index 18c7c9644761..ce53f08186fa 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -3388,6 +3388,16 @@ __i915_gem_vma_create(struct drm_i915_gem_object *obj,
}
struct i915_vma *
+i915_vma_create(struct drm_i915_gem_object *obj,
+ struct i915_address_space *vm,
+ const struct i915_ggtt_view *view)
+{
+ GEM_BUG_ON(view ? i915_gem_obj_to_ggtt_view(obj, view) : i915_gem_obj_to_vma(obj, vm));
+
+ return __i915_gem_vma_create(obj, vm, view ?: &i915_ggtt_view_normal);
+}
+
+struct i915_vma *
i915_gem_obj_lookup_or_create_vma(struct drm_i915_gem_object *obj,
struct i915_address_space *vm)
{
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.h b/drivers/gpu/drm/i915/i915_gem_gtt.h
index cc56206a1600..ac47663a4d32 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.h
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.h
@@ -232,6 +232,11 @@ struct i915_vma {
struct drm_i915_gem_exec_object2 *exec_entry;
};
+struct i915_vma *
+i915_vma_create(struct drm_i915_gem_object *obj,
+ struct i915_address_space *vm,
+ const struct i915_ggtt_view *view);
+
static inline bool i915_vma_is_ggtt(const struct i915_vma *vma)
{
return vma->flags & I915_VMA_GGTT;
--
2.8.1
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