CXLDEV_MBOX_CTRL_OFFSET
cxlds->regs.mbox + CXLDEV_MBOX_CTRL_OFFSET);
(readl((cxlds)->regs.mbox + CXLDEV_MBOX_CTRL_OFFSET) & \
ctrl = readl(cxlds->regs.mbox + CXLDEV_MBOX_CTRL_OFFSET);
writel(ctrl, cxlds->regs.mbox + CXLDEV_MBOX_CTRL_OFFSET);