PLX_REG_L2PDBELL
plx_bits = readl(devpriv->plx9080_iobase + PLX_REG_L2PDBELL);
writel(plx_bits, devpriv->plx9080_iobase + PLX_REG_L2PDBELL);
plx_bits = readl(devpriv->plx9080_mmio + PLX_REG_L2PDBELL);
writel(plx_bits, devpriv->plx9080_mmio + PLX_REG_L2PDBELL);