PLX_REG_CTRL
val = readl(plxdev->bar + PLX_REG_CTRL);
plxdev->bar + PLX_REG_CTRL);
val = readl(plxdev->bar + PLX_REG_CTRL);
plxdev->bar + PLX_REG_CTRL);
writew(PLX_REG_CTRL_START_VAL, plxdev->bar + PLX_REG_CTRL);
writel(PLX_REG_CTRL_RESET_VAL, plxdev->bar + PLX_REG_CTRL);