@@ -34,6 +36,19 @@
  */
 struct sdhci_arasan_data {
 	struct clk	*clk_ahb;
+	struct platform_device *pdev;
+	void __iomem	*ahb_aim_csr;
+	const struct sdhci_arasan_ahb_ops *ahb_ops;
+};
+
+/**
+ * struct sdhci_arasan_ahb_ops
+ * @init_ahb	Initialize translation bus
+ * @xlat_addr	Set up an 64-bit addressing translation
+ */
+struct sdhci_arasan_ahb_ops {
+	int (*init_ahb)(struct sdhci_arasan_data *data);
+	void (*xlat_addr)(struct sdhci_arasan_data *data, u64 dma_addr);
 };
 
 static unsigned int sdhci_arasan_get_timeout_clock(struct sdhci_host *host)

@@ -51,7 +66,21 @@ static unsigned int sdhci_arasan_get_timeout_clock(struct sdhci_host *host)
 	return freq;
 }
 
+static void sdhci_arasan_writel(struct sdhci_host *host, u32 val, int reg)
+{
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+	struct sdhci_arasan_data *sdhci_arasan = pltfm_host->priv;
+
+	if (reg == SDHCI_DMA_ADDRESS) {
+		if (sdhci_arasan->ahb_ops && sdhci_arasan->ahb_ops->xlat_addr)
+			sdhci_arasan->ahb_ops->xlat_addr(sdhci_arasan,
+				sg_dma_address(host->data->sg));
+	}
+	writel(val, host->ioaddr + reg);
+}
+
 static struct sdhci_ops sdhci_arasan_ops = {
+	.write_l = sdhci_arasan_writel,
 	.get_max_clock = sdhci_pltfm_clk_get_max_clock,
 	.get_timeout_clock = sdhci_arasan_get_timeout_clock,
 };