- u16 num_descs = ioat2_ring_mask(ioat) + 1;
- u16 active = ioat2_ring_active(ioat);
-
- BUG_ON(active > num_descs);
-
- return num_descs - active;
-}
-
-/* assumes caller already checked space */
-static inline u16 ioat2_desc_alloc(struct ioat2_dma_chan *ioat, u16 len)
-{
- ioat->head += len;
- return ioat->head - len;