ET_DMA10_WRAP
writel(ET_DMA10_WRAP, full_offset);
fbr->local_full = ET_DMA10_WRAP;
tmp_free_buff_ring ^= ET_DMA10_WRAP;
tmp_free_buff_ring &= (ET_DMA10_MASK | ET_DMA10_WRAP);
tx_ring->send_idx ^= ET_DMA10_WRAP;
tcb->index = ET_DMA10_WRAP|(NUM_DESC_PER_RING_TX - 1);
tcb->index_start ^= ET_DMA10_WRAP;
((serviced ^ tcb->index) & ET_DMA10_WRAP) &&
!((serviced ^ tcb->index) & ET_DMA10_WRAP) &&
*v = INDEX10(*v + n) | (*v & ET_DMA10_WRAP);