Commit 75ba3121 authored by Arunpravin Paneer Selvam's avatar Arunpravin Paneer Selvam Committed by Christian König
Browse files

drm/ttm: Implement intersect/compatible functions 



Implemented a new intersect and compatible callback functions
to ttm range manager fetching start offset from drm mm range
allocator.

Signed-off-by: default avatarChristian König <christian.koenig@amd.com>
Signed-off-by: default avatarArunpravin Paneer Selvam <Arunpravin.PaneerSelvam@amd.com>
Reviewed-by: default avatarChristian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220820073304.178444-2-Arunpravin.PaneerSelvam@amd.com
parent 54443270

drivers/gpu/drm/ttm/ttm_range_manager.c

+33 −0
Original line number Diff line number Diff line
@@ -113,6 +113,37 @@ static void ttm_range_man_free(struct ttm_resource_manager *man, 
	kfree(node);

}



static bool ttm_range_man_intersects(struct ttm_resource_manager *man,

				     struct ttm_resource *res,

				     const struct ttm_place *place,

				     size_t size)

{

	struct drm_mm_node *node = &to_ttm_range_mgr_node(res)->mm_nodes[0];

	u32 num_pages = PFN_UP(size);



	/* Don't evict BOs outside of the requested placement range */

	if (place->fpfn >= (node->start + num_pages) ||

	    (place->lpfn && place->lpfn <= node->start))

		return false;



	return true;

}



static bool ttm_range_man_compatible(struct ttm_resource_manager *man,

				     struct ttm_resource *res,

				     const struct ttm_place *place,

				     size_t size)

{

	struct drm_mm_node *node = &to_ttm_range_mgr_node(res)->mm_nodes[0];

	u32 num_pages = PFN_UP(size);



	if (node->start < place->fpfn ||

	    (place->lpfn && (node->start + num_pages) > place->lpfn))

		return false;



	return true;

}



static void ttm_range_man_debug(struct ttm_resource_manager *man,

				struct drm_printer *printer)

{
@@ -126,6 +157,8 @@ static void ttm_range_man_debug(struct ttm_resource_manager *man, 
static const struct ttm_resource_manager_func ttm_range_manager_func = {

	.alloc = ttm_range_man_alloc,

	.free = ttm_range_man_free,

	.intersects = ttm_range_man_intersects,

	.compatible = ttm_range_man_compatible,

	.debug = ttm_range_man_debug

};