YH2I_REQ_HI
writel((hba->dma_handle >> 16) >> 16, base + YH2I_REQ_HI);
readl(base + YH2I_REQ_HI);
writel((hba->dma_handle >> 16) >> 16, base + YH2I_REQ_HI);
writel((addr >> 16) >> 16, hba->mmio_base + YH2I_REQ_HI);
writel((addr >> 16) >> 16, hba->mmio_base + YH2I_REQ_HI);
readl(hba->mmio_base + YH2I_REQ_HI); /* flush */