DMA_IRQ_EN
writel(0, sdev->base + DMA_IRQ_EN(0));
writel(0, sdev->base + DMA_IRQ_EN(1));
DMA_IRQ_EN(0), readl(sdev->base + DMA_IRQ_EN(0)),
DMA_IRQ_EN(1), readl(sdev->base + DMA_IRQ_EN(1)),
irq_val = readl(sdev->base + DMA_IRQ_EN(irq_reg));
writel(irq_val, sdev->base + DMA_IRQ_EN(irq_reg));