IXGBE_VFTDBAH
regs_buff[31 + i] = IXGBE_READ_REG(hw, IXGBE_VFTDBAH(i));
{ IXGBE_VFTDBAH(0), 2, PATTERN_TEST, 0xFFFFFFFF, 0xFFFFFFFF },
IXGBE_WRITE_REG(hw, IXGBE_VFTDBAH(reg_idx), tdba >> 32);