LINK_TOGGLE
~cpu_to_le32(LINK_TOGGLE);
cpu_to_le32(LINK_TOGGLE);
cpu_to_le32(LINK_TOGGLE);
return le32_to_cpu(trb->link.control) & LINK_TOGGLE;
link_trb->field[3] = cpu_to_le32(TRB_TYPE(TRB_LINK)) | cpu_to_le32(LINK_TOGGLE);
trb->link.control = cpu_to_le32(LINK_TOGGLE | TRB_TYPE(TRB_LINK));
ring->last_seg->trbs[TRBS_PER_SEGMENT - 1].link.control |= cpu_to_le32(LINK_TOGGLE);
&= ~cpu_to_le32(LINK_TOGGLE);
src->last_seg->trbs[TRBS_PER_SEGMENT-1].link.control &= ~cpu_to_le32(LINK_TOGGLE);
return le32_to_cpu(trb->link.control) & LINK_TOGGLE;