[PATCH v4 03/17] drm/i915/vm_bind: Expose i915_gem_object_max_page_size()

[Niranjana Vishwanathapura <niranjana.vishwanathapura@xxxxxxxxx>]

Expose i915_gem_object_max_page_size() function non-static
which will be used by the vm_bind feature.

Reviewed-by: Matthew Auld <matthew.auld@xxxxxxxxx>
Signed-off-by: Niranjana Vishwanathapura <niranjana.vishwanathapura@xxxxxxxxx>
Signed-off-by: Andi Shyti <andi.shyti@xxxxxxxxxxxxxxx>
---
 drivers/gpu/drm/i915/gem/i915_gem_create.c | 18 +++++++++++++-----
 drivers/gpu/drm/i915/gem/i915_gem_object.h |  2 ++
 2 files changed, 15 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/i915/gem/i915_gem_create.c b/drivers/gpu/drm/i915/gem/i915_gem_create.c
index 33673fe7ee0a..5c6e396ab74d 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_create.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_create.c
@@ -15,10 +15,18 @@
 #include "i915_trace.h"
 #include "i915_user_extensions.h"
 
-static u32 object_max_page_size(struct intel_memory_region **placements,
-				unsigned int n_placements)
+/**
+ * i915_gem_object_max_page_size() - max of min_page_size of the regions
+ * @placements:  list of regions
+ * @n_placements: number of the placements
+ *
+ * Returns the largest of min_page_size of the @placements,
+ * or I915_GTT_PAGE_SIZE_4K if @n_placements is 0.
+ */
+u32 i915_gem_object_max_page_size(struct intel_memory_region **placements,
+				  unsigned int n_placements)
 {
-	u32 max_page_size = 0;
+	u32 max_page_size = I915_GTT_PAGE_SIZE_4K;
 	int i;
 
 	for (i = 0; i < n_placements; i++) {
@@ -28,7 +36,6 @@ static u32 object_max_page_size(struct intel_memory_region **placements,
 		max_page_size = max_t(u32, max_page_size, mr->min_page_size);
 	}
 
-	GEM_BUG_ON(!max_page_size);
 	return max_page_size;
 }
 
@@ -99,7 +106,8 @@ __i915_gem_object_create_user_ext(struct drm_i915_private *i915, u64 size,
 
 	i915_gem_flush_free_objects(i915);
 
-	size = round_up(size, object_max_page_size(placements, n_placements));
+	size = round_up(size, i915_gem_object_max_page_size(placements,
+							    n_placements));
 	if (size == 0)
 		return ERR_PTR(-EINVAL);
 
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_object.h b/drivers/gpu/drm/i915/gem/i915_gem_object.h
index 6b9ecff42bb5..db3dd0e285c5 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_object.h
+++ b/drivers/gpu/drm/i915/gem/i915_gem_object.h
@@ -47,6 +47,8 @@ static inline bool i915_gem_object_size_2big(u64 size)
 }
 
 void i915_gem_init__objects(struct drm_i915_private *i915);
+u32 i915_gem_object_max_page_size(struct intel_memory_region **placements,
+				  unsigned int n_placements);
 
 void i915_objects_module_exit(void);
 int i915_objects_module_init(void);
-- 
2.21.0.rc0.32.g243a4c7e27