NVREG_IRQ_TIMER
writel(events & NVREG_IRQ_TIMER, base + NvRegIrqStatus);
writel(events & NVREG_IRQ_TIMER, base + NvRegMSIXIrqStatus);
if (!(events & NVREG_IRQ_TIMER))
nv_enable_hw_interrupts(dev, NVREG_IRQ_TIMER);
nv_disable_hw_interrupts(dev, NVREG_IRQ_TIMER);
np->irqmask |= NVREG_IRQ_TIMER;