openwrt/target/linux/layerscape/patches-4.9/801-ata-support-layerscape.patch

From 505eb62bdb7a4cc25b13491dd5c68d0741c5d6da Mon Sep 17 00:00:00 2001
From: Yangbo Lu <yangbo.lu@nxp.com>
Date: Mon, 25 Sep 2017 12:21:13 +0800
Subject: [PATCH] ata: support layerscape

This is a integrated patch for layerscape sata support.

Signed-off-by: Tang Yuantian <Yuantian.Tang@nxp.com>
Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
---
 drivers/ata/ahci_qoriq.c | 63 ++++++++++++++++++++++++++++++++++++++++++------
 1 file changed, 56 insertions(+), 7 deletions(-)

diff --git a/drivers/ata/ahci_qoriq.c b/drivers/ata/ahci_qoriq.c
index 1eba8dff..2f30a39f 100644
--- a/drivers/ata/ahci_qoriq.c
+++ b/drivers/ata/ahci_qoriq.c
@@ -1,7 +1,7 @@
 /*
  * Freescale QorIQ AHCI SATA platform driver
  *
- * Copyright 2015 Freescale, Inc.
+ * Copyright (C) 2015 Freescale Semiconductor, Inc.
  *   Tang Yuantian <Yuantian.Tang@freescale.com>
  *
  * This program is free software; you can redistribute it and/or modify
@@ -46,23 +46,32 @@
 #define LS1021A_AXICC_ADDR	0xC0
 
 #define SATA_ECC_DISABLE	0x00020000
+#define ECC_DIS_ARMV8_CH2	0x80000000
+#define ECC_DIS_LS1088A		0x40000000
 
 enum ahci_qoriq_type {
 	AHCI_LS1021A,
 	AHCI_LS1043A,
 	AHCI_LS2080A,
+	AHCI_LS1046A,
+	AHCI_LS1088A,
+	AHCI_LS2088A,
 };
 
 struct ahci_qoriq_priv {
 	struct ccsr_ahci *reg_base;
 	enum ahci_qoriq_type type;
 	void __iomem *ecc_addr;
+	bool is_dmacoherent;
 };
 
 static const struct of_device_id ahci_qoriq_of_match[] = {
 	{ .compatible = "fsl,ls1021a-ahci", .data = (void *)AHCI_LS1021A},
 	{ .compatible = "fsl,ls1043a-ahci", .data = (void *)AHCI_LS1043A},
 	{ .compatible = "fsl,ls2080a-ahci", .data = (void *)AHCI_LS2080A},
+	{ .compatible = "fsl,ls1046a-ahci", .data = (void *)AHCI_LS1046A},
+	{ .compatible = "fsl,ls1088a-ahci", .data = (void *)AHCI_LS1088A},
+	{ .compatible = "fsl,ls2088a-ahci", .data = (void *)AHCI_LS2088A},
 	{},
 };
 MODULE_DEVICE_TABLE(of, ahci_qoriq_of_match);
@@ -154,6 +163,8 @@ static int ahci_qoriq_phy_init(struct ahci_host_priv *hpriv)
 
 	switch (qpriv->type) {
 	case AHCI_LS1021A:
+		if (!qpriv->ecc_addr)
+			return -EINVAL;
 		writel(SATA_ECC_DISABLE, qpriv->ecc_addr);
 		writel(AHCI_PORT_PHY_1_CFG, reg_base + PORT_PHY1);
 		writel(LS1021A_PORT_PHY2, reg_base + PORT_PHY2);
@@ -161,19 +172,56 @@ static int ahci_qoriq_phy_init(struct ahci_host_priv *hpriv)
 		writel(LS1021A_PORT_PHY4, reg_base + PORT_PHY4);
 		writel(LS1021A_PORT_PHY5, reg_base + PORT_PHY5);
 		writel(AHCI_PORT_TRANS_CFG, reg_base + PORT_TRANS);
-		writel(AHCI_PORT_AXICC_CFG, reg_base + LS1021A_AXICC_ADDR);
+		if (qpriv->is_dmacoherent)
+			writel(AHCI_PORT_AXICC_CFG,
+					reg_base + LS1021A_AXICC_ADDR);
 		break;
 
 	case AHCI_LS1043A:
+		if (!qpriv->ecc_addr)
+			return -EINVAL;
+		writel(readl(qpriv->ecc_addr) | ECC_DIS_ARMV8_CH2,
+				qpriv->ecc_addr);
 		writel(AHCI_PORT_PHY_1_CFG, reg_base + PORT_PHY1);
 		writel(AHCI_PORT_TRANS_CFG, reg_base + PORT_TRANS);
-		writel(AHCI_PORT_AXICC_CFG, reg_base + PORT_AXICC);
+		if (qpriv->is_dmacoherent)
+			writel(AHCI_PORT_AXICC_CFG, reg_base + PORT_AXICC);
 		break;
 
 	case AHCI_LS2080A:
 		writel(AHCI_PORT_PHY_1_CFG, reg_base + PORT_PHY1);
 		writel(AHCI_PORT_TRANS_CFG, reg_base + PORT_TRANS);
-		writel(AHCI_PORT_AXICC_CFG, reg_base + PORT_AXICC);
+		if (qpriv->is_dmacoherent)
+			writel(AHCI_PORT_AXICC_CFG, reg_base + PORT_AXICC);
+		break;
+
+	case AHCI_LS1046A:
+		if (!qpriv->ecc_addr)
+			return -EINVAL;
+		writel(readl(qpriv->ecc_addr) | ECC_DIS_ARMV8_CH2,
+				qpriv->ecc_addr);
+		writel(AHCI_PORT_PHY_1_CFG, reg_base + PORT_PHY1);
+		writel(AHCI_PORT_TRANS_CFG, reg_base + PORT_TRANS);
+		if (qpriv->is_dmacoherent)
+			writel(AHCI_PORT_AXICC_CFG, reg_base + PORT_AXICC);
+		break;
+
+	case AHCI_LS1088A:
+		if (!qpriv->ecc_addr)
+			return -EINVAL;
+		writel(readl(qpriv->ecc_addr) | ECC_DIS_LS1088A,
+		       qpriv->ecc_addr);
+		writel(AHCI_PORT_PHY_1_CFG, reg_base + PORT_PHY1);
+		writel(AHCI_PORT_TRANS_CFG, reg_base + PORT_TRANS);
+		if (qpriv->is_dmacoherent)
+			writel(AHCI_PORT_AXICC_CFG, reg_base + PORT_AXICC);
+		break;
+
+	case AHCI_LS2088A:
+		writel(AHCI_PORT_PHY_1_CFG, reg_base + PORT_PHY1);
+		writel(AHCI_PORT_TRANS_CFG, reg_base + PORT_TRANS);
+		if (qpriv->is_dmacoherent)
+			writel(AHCI_PORT_AXICC_CFG, reg_base + PORT_AXICC);
 		break;
 	}
 
@@ -204,13 +252,14 @@ static int ahci_qoriq_probe(struct platform_device *pdev)
 
 	qoriq_priv->type = (enum ahci_qoriq_type)of_id->data;
 
-	if (qoriq_priv->type == AHCI_LS1021A) {
-		res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
-				"sata-ecc");
+	res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
+			"sata-ecc");
+	if (res) {
 		qoriq_priv->ecc_addr = devm_ioremap_resource(dev, res);
 		if (IS_ERR(qoriq_priv->ecc_addr))
 			return PTR_ERR(qoriq_priv->ecc_addr);
 	}
+	qoriq_priv->is_dmacoherent = of_dma_is_coherent(np);
 
 	rc = ahci_platform_enable_resources(hpriv);
 	if (rc)
-- 
2.14.1