GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

source/bootloader/u-boot-2020.01/drivers/ata/dwc_ahci.c

@@ -0,0 +1,99 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * DWC SATA platform driver
+ *
+ * (C) Copyright 2016
+ *     Texas Instruments Incorporated, <www.ti.com>
+ *
+ * Author: Mugunthan V N <mugunthanvnm@ti.com>
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <ahci.h>
+#include <scsi.h>
+#include <sata.h>
+#include <asm/arch/sata.h>
+#include <asm/io.h>
+#include <generic-phy.h>
+
+struct dwc_ahci_priv {
+	void *base;
+	void *wrapper_base;
+};
+
+static int dwc_ahci_bind(struct udevice *dev)
+{
+	struct udevice *scsi_dev;
+
+	return ahci_bind_scsi(dev, &scsi_dev);
+}
+
+static int dwc_ahci_ofdata_to_platdata(struct udevice *dev)
+{
+	struct dwc_ahci_priv *priv = dev_get_priv(dev);
+	fdt_addr_t addr;
+
+	priv->base = map_physmem(devfdt_get_addr(dev), sizeof(void *),
+				 MAP_NOCACHE);
+
+	addr = devfdt_get_addr_index(dev, 1);
+	if (addr != FDT_ADDR_T_NONE) {
+		priv->wrapper_base = map_physmem(addr, sizeof(void *),
+						 MAP_NOCACHE);
+	} else {
+		priv->wrapper_base = NULL;
+	}
+
+	return 0;
+}
+
+static int dwc_ahci_probe(struct udevice *dev)
+{
+	struct dwc_ahci_priv *priv = dev_get_priv(dev);
+	int ret;
+	struct phy phy;
+
+	ret = generic_phy_get_by_name(dev, "sata-phy", &phy);
+	if (ret) {
+		pr_err("can't get the phy from DT\n");
+		return ret;
+	}
+
+	ret = generic_phy_init(&phy);
+	if (ret) {
+		pr_err("unable to initialize the sata phy\n");
+		return ret;
+	}
+
+	ret = generic_phy_power_on(&phy);
+	if (ret) {
+		pr_err("unable to power on the sata phy\n");
+		return ret;
+	}
+
+	if (priv->wrapper_base) {
+		u32 val = TI_SATA_IDLE_NO | TI_SATA_STANDBY_NO;
+
+		/* Enable SATA module, No Idle, No Standby */
+		writel(val, priv->wrapper_base + TI_SATA_SYSCONFIG);
+	}
+
+	return ahci_probe_scsi(dev, (ulong)priv->base);
+}
+
+static const struct udevice_id dwc_ahci_ids[] = {
+	{ .compatible = "snps,dwc-ahci" },
+	{ }
+};
+
+U_BOOT_DRIVER(dwc_ahci) = {
+	.name	= "dwc_ahci",
+	.id	= UCLASS_AHCI,
+	.of_match = dwc_ahci_ids,
+	.bind	= dwc_ahci_bind,
+	.ofdata_to_platdata = dwc_ahci_ofdata_to_platdata,
+	.ops	= &scsi_ops,
+	.probe	= dwc_ahci_probe,
+	.priv_auto_alloc_size = sizeof(struct dwc_ahci_priv),
+};