drm/nouveau: kick vram functions out into an "engine"
NVC0 will be able to share some of nv50's paths this way. This also makes
it the card-specific vram code responsible for deciding if a given set
of tile_flags is valid, rather than duplicating the allowed types in
nv50_vram.c and nouveau_gem.c
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/nv50_vram.c b/drivers/gpu/drm/nouveau/nv50_vram.c
index 6e75335..47489ed 100644
--- a/drivers/gpu/drm/nouveau/nv50_vram.c
+++ b/drivers/gpu/drm/nouveau/nv50_vram.c
@@ -37,6 +37,16 @@
1, 0, 2, 0, 1, 0, 2, 0, 1, 1, 2, 2, 1, 1, 0, 0
};
+bool
+nv50_vram_flags_valid(struct drm_device *dev, u32 tile_flags)
+{
+ int type = (tile_flags & NOUVEAU_GEM_TILE_LAYOUT_MASK) >> 8;
+
+ if (likely(type < sizeof(types) && types[type]))
+ return true;
+ return false;
+}
+
void
nv50_vram_del(struct drm_device *dev, struct nouveau_vram **pvram)
{