enetc_txbdr_rd
tx_ring->next_to_use = enetc_txbdr_rd(hw, idx, ENETC_TBPIR);
tx_ring->next_to_clean = enetc_txbdr_rd(hw, idx, ENETC_TBCIR);
tbmr = enetc_txbdr_rd(hw, idx, ENETC_TBMR);
enetc_txbdr_rd(hw, idx, ENETC_TBSR) & ENETC_TBSR_BUSY) {
val = enetc_txbdr_rd(hw, 0, ENETC_TBLENR);
u32 val = enetc_txbdr_rd(hw, idx, ENETC_TBMR);
u32 val = enetc_txbdr_rd(hw, bdr_idx, ENETC_TBMR);