Commit 29dff2f5 authored by Ben Skeggs's avatar Ben Skeggs
Browse files

drm/nouveau/core: add function to return list of supported children 



Signed-off-by: default avatarBen Skeggs <bskeggs@redhat.com>
parent 79ca2770

drivers/gpu/drm/nouveau/core/core/parent.c

+33 −0
Original line number Diff line number Diff line
@@ -74,6 +74,39 @@ nouveau_parent_sclass(struct nouveau_object *parent, u16 handle, 
	return -EINVAL;

}



int

nouveau_parent_lclass(struct nouveau_object *parent, u32 *lclass, int size)

{

	struct nouveau_sclass *sclass;

	struct nouveau_engine *engine;

	struct nouveau_oclass *oclass;

	int nr = -1, i;

	u64 mask;



	sclass = nv_parent(parent)->sclass;

	while (sclass) {

		if (++nr < size)

			lclass[nr] = sclass->oclass->handle;

		sclass = sclass->sclass;

	}



	mask = nv_parent(parent)->engine;

	while (i = __ffs64(mask), mask) {

		engine = nouveau_engine(parent, i);

		if (engine && (oclass = engine->sclass)) {

			while (oclass->ofuncs) {

				if (++nr < size)

					lclass[nr] = oclass->handle;

				oclass++;

			}

		}



		mask &= ~(1ULL << i);

	}



	return nr + 1;

}



int

nouveau_parent_create_(struct nouveau_object *parent,

		       struct nouveau_object *engine,

drivers/gpu/drm/nouveau/core/include/core/parent.h

+1 −0
Original line number Diff line number Diff line
@@ -57,5 +57,6 @@ void _nouveau_parent_dtor(struct nouveau_object *); 
int nouveau_parent_sclass(struct nouveau_object *, u16 handle,

			  struct nouveau_object **pengine,

			  struct nouveau_oclass **poclass);

int nouveau_parent_lclass(struct nouveau_object *, u32 *, int);



#endif