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From 71fb63c92eae3f9197e2343ed5ed3676440789e1 Mon Sep 17 00:00:00 2001
From: Biwen Li <biwen.li@nxp.com>
Date: Wed, 17 Apr 2019 18:59:01 +0800
Subject: [PATCH] sata: support layerscape
This is an integrated patch of sata for layerscape
Signed-off-by: Biwen Li <biwen.li@nxp.com>
Signed-off-by: Peng Ma <peng.ma@nxp.com>
Signed-off-by: Tang Yuantian <andy.tang@nxp.com>
---
drivers/ata/ahci.h | 7 ++
drivers/ata/ahci_qoriq.c | 168 ++++++++++++++++++++++++++++++++++++++
drivers/ata/libata-core.c | 3 +
3 files changed, 178 insertions(+)
--- a/drivers/ata/ahci.h
+++ b/drivers/ata/ahci.h
@@ -445,4 +445,11 @@ static inline int ahci_nr_ports(u32 cap)
return (cap & 0x1f) + 1;
}
+#ifdef CONFIG_AHCI_QORIQ
+extern void fsl_sata_errata_379364(struct ata_link *link);
+#else
+static void fsl_sata_errata_379364(struct ata_link *link)
+{}
+#endif
+
#endif /* _AHCI_H */
--- a/drivers/ata/ahci_qoriq.c
+++ b/drivers/ata/ahci_qoriq.c
@@ -35,6 +35,8 @@
/* port register default value */
#define AHCI_PORT_PHY_1_CFG 0xa003fffe
+#define AHCI_PORT_PHY2_CFG 0x28184d1f
+#define AHCI_PORT_PHY3_CFG 0x0e081509
#define AHCI_PORT_TRANS_CFG 0x08000029
#define AHCI_PORT_AXICC_CFG 0x3fffffff
@@ -49,6 +51,27 @@
#define ECC_DIS_ARMV8_CH2 0x80000000
#define ECC_DIS_LS1088A 0x40000000
+/* errata for lx2160 */
+#define RCWSR29_BASE 0x1E00170
+#define SERDES2_BASE 0x1EB0000
+#define DEVICE_CONFIG_REG_BASE 0x1E00000
+#define SERDES2_LNAX_RX_CR(x) (0x840 + (0x100 * (x)))
+#define SERDES2_LNAX_RX_CBR(x) (0x8C0 + (0x100 * (x)))
+#define SYS_VER_REG 0xA4
+#define LN_RX_RST 0x80000010
+#define LN_RX_RST_DONE 0x3
+#define LN_RX_MASK 0xf
+#define LX2160A_VER1 0x1
+
+#define SERDES2_LNAA 0
+#define SERDES2_LNAB 1
+#define SERDES2_LNAC 2
+#define SERDES2_LNAD 3
+#define SERDES2_LNAE 4
+#define SERDES2_LNAF 5
+#define SERDES2_LNAG 6
+#define SERDES2_LNAH 7
+
enum ahci_qoriq_type {
AHCI_LS1021A,
AHCI_LS1043A,
@@ -56,6 +79,7 @@ enum ahci_qoriq_type {
AHCI_LS1046A,
AHCI_LS1088A,
AHCI_LS2088A,
+ AHCI_LX2160A,
};
struct ahci_qoriq_priv {
@@ -72,6 +96,7 @@ static const struct of_device_id ahci_qo
{ .compatible = "fsl,ls1046a-ahci", .data = (void *)AHCI_LS1046A},
{ .compatible = "fsl,ls1088a-ahci", .data = (void *)AHCI_LS1088A},
{ .compatible = "fsl,ls2088a-ahci", .data = (void *)AHCI_LS2088A},
+ { .compatible = "fsl,lx2160a-ahci", .data = (void *)AHCI_LX2160A},
{},
};
MODULE_DEVICE_TABLE(of, ahci_qoriq_of_match);
@@ -156,6 +181,138 @@ static struct scsi_host_template ahci_qo
AHCI_SHT(DRV_NAME),
};
+void fsl_sata_errata_379364(struct ata_link *link)
+{
+ struct ata_port *ap = link->ap;
+ struct ahci_host_priv *hpriv = ap->host->private_data;
+ struct ahci_qoriq_priv *qoriq_priv = hpriv->plat_data;
+ bool lx2160a_workaround = (qoriq_priv->type == AHCI_LX2160A);
+
+ int val = 0;
+ void __iomem *rcw_base = NULL;
+ void __iomem *serdes_base = NULL;
+ void __iomem *dev_con_base = NULL;
+
+ if (!lx2160a_workaround)
+ return;
+ else {
+ dev_con_base = ioremap(DEVICE_CONFIG_REG_BASE, PAGE_SIZE);
+ if (!dev_con_base) {
+ ata_link_err(link, "device config ioremap failed\n");
+ return;
+ }
+
+ val = (readl(dev_con_base + SYS_VER_REG) & GENMASK(7, 4)) >> 4;
+ if (val != LX2160A_VER1)
+ goto dev_unmap;
+
+ /*
+ * Add few msec delay.
+ * Check for corresponding serdes lane RST_DONE .
+ * apply lane reset.
+ */
+
+ serdes_base = ioremap(SERDES2_BASE, PAGE_SIZE);
+ if (!serdes_base) {
+ ata_link_err(link, "serdes ioremap failed\n");
+ goto dev_unmap;
+ }
+
+ rcw_base = ioremap(RCWSR29_BASE, PAGE_SIZE);
+ if (!rcw_base) {
+ ata_link_err(link, "rcw ioremap failed\n");
+ goto serdes_unmap;
+ }
+
+ ata_msleep(link->ap, 1);
+
+ val = (readl(rcw_base) & GENMASK(25, 21)) >> 21;
+
+ switch (val) {
+ case 1:
+ if ((readl(serdes_base + SERDES2_LNAX_RX_CBR(SERDES2_LNAC)) &
+ LN_RX_MASK) != LN_RX_RST_DONE)
+ writel(LN_RX_RST, serdes_base +
+ SERDES2_LNAX_RX_CR(SERDES2_LNAC));
+ if ((readl(serdes_base + SERDES2_LNAX_RX_CBR(SERDES2_LNAD)) &
+ LN_RX_MASK) != LN_RX_RST_DONE)
+ writel(LN_RX_RST, serdes_base +
+ SERDES2_LNAX_RX_CR(SERDES2_LNAD));
+ break;
+
+ case 4:
+ if ((readl(serdes_base + SERDES2_LNAX_RX_CBR(SERDES2_LNAG)) &
+ LN_RX_MASK) != LN_RX_RST_DONE)
+ writel(LN_RX_RST, serdes_base +
+ SERDES2_LNAX_RX_CR(SERDES2_LNAG));
+ if ((readl(serdes_base + SERDES2_LNAX_RX_CBR(SERDES2_LNAH)) &
+ LN_RX_MASK) != LN_RX_RST_DONE)
+ writel(LN_RX_RST, serdes_base +
+ SERDES2_LNAX_RX_CR(SERDES2_LNAH));
+ break;
+
+ case 5:
+ if ((readl(serdes_base + SERDES2_LNAX_RX_CBR(SERDES2_LNAE)) &
+ LN_RX_MASK) != LN_RX_RST_DONE)
+ writel(LN_RX_RST, serdes_base +
+ SERDES2_LNAX_RX_CR(SERDES2_LNAE));
+ if ((readl(serdes_base + SERDES2_LNAX_RX_CBR(SERDES2_LNAF)) &
+ LN_RX_MASK) != LN_RX_RST_DONE)
+ writel(LN_RX_RST, serdes_base +
+ SERDES2_LNAX_RX_CR(SERDES2_LNAF));
+ if ((readl(serdes_base + SERDES2_LNAX_RX_CBR(SERDES2_LNAG)) &
+ LN_RX_MASK) != LN_RX_RST_DONE)
+ writel(LN_RX_RST, serdes_base +
+ SERDES2_LNAX_RX_CR(SERDES2_LNAG));
+ if ((readl(serdes_base + SERDES2_LNAX_RX_CBR(SERDES2_LNAH)) &
+ LN_RX_MASK) != LN_RX_RST_DONE)
+ writel(LN_RX_RST, serdes_base +
+ SERDES2_LNAX_RX_CR(SERDES2_LNAH));
+ break;
+
+ case 8:
+ if ((readl(serdes_base + SERDES2_LNAX_RX_CBR(SERDES2_LNAC)) &
+ LN_RX_MASK) != LN_RX_RST_DONE)
+ writel(LN_RX_RST, serdes_base +
+ SERDES2_LNAX_RX_CR(SERDES2_LNAC));
+ if ((readl(serdes_base + SERDES2_LNAX_RX_CBR(SERDES2_LNAD)) &
+ LN_RX_MASK) != LN_RX_RST_DONE)
+ writel(LN_RX_RST, serdes_base +
+ SERDES2_LNAX_RX_CR(SERDES2_LNAD));
+ if ((readl(serdes_base + SERDES2_LNAX_RX_CBR(SERDES2_LNAE)) &
+ LN_RX_MASK) != LN_RX_RST_DONE)
+ writel(LN_RX_RST, serdes_base +
+ SERDES2_LNAX_RX_CR(SERDES2_LNAE));
+ if ((readl(serdes_base + SERDES2_LNAX_RX_CBR(SERDES2_LNAF)) &
+ LN_RX_MASK) != LN_RX_RST_DONE)
+ writel(LN_RX_RST, serdes_base +
+ SERDES2_LNAX_RX_CR(SERDES2_LNAF));
+ break;
+
+ case 12:
+ if ((readl(serdes_base + SERDES2_LNAX_RX_CBR(SERDES2_LNAG)) &
+ LN_RX_MASK) != LN_RX_RST_DONE)
+ writel(LN_RX_RST, serdes_base +
+ SERDES2_LNAX_RX_CR(SERDES2_LNAG));
+ if ((readl(serdes_base + SERDES2_LNAX_RX_CBR(SERDES2_LNAH)) &
+ LN_RX_MASK) != LN_RX_RST_DONE)
+ writel(LN_RX_RST, serdes_base +
+ SERDES2_LNAX_RX_CR(SERDES2_LNAH));
+ break;
+
+ default:
+ break;
+ }
+ }
+
+ iounmap(rcw_base);
+serdes_unmap:
+ iounmap(serdes_base);
+dev_unmap:
+ iounmap(dev_con_base);
+}
+
+
static int ahci_qoriq_phy_init(struct ahci_host_priv *hpriv)
{
struct ahci_qoriq_priv *qpriv = hpriv->plat_data;
@@ -183,13 +340,18 @@ static int ahci_qoriq_phy_init(struct ah
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_PHY2_CFG, reg_base + PORT_PHY2);
+ writel(AHCI_PORT_PHY3_CFG, reg_base + PORT_PHY3);
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_LS2080A:
+ case AHCI_LX2160A:
writel(AHCI_PORT_PHY_1_CFG, reg_base + PORT_PHY1);
+ writel(AHCI_PORT_PHY2_CFG, reg_base + PORT_PHY2);
+ writel(AHCI_PORT_PHY3_CFG, reg_base + PORT_PHY3);
writel(AHCI_PORT_TRANS_CFG, reg_base + PORT_TRANS);
if (qpriv->is_dmacoherent)
writel(AHCI_PORT_AXICC_CFG, reg_base + PORT_AXICC);
@@ -201,6 +363,8 @@ static int ahci_qoriq_phy_init(struct ah
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_PHY2_CFG, reg_base + PORT_PHY2);
+ writel(AHCI_PORT_PHY3_CFG, reg_base + PORT_PHY3);
writel(AHCI_PORT_TRANS_CFG, reg_base + PORT_TRANS);
if (qpriv->is_dmacoherent)
writel(AHCI_PORT_AXICC_CFG, reg_base + PORT_AXICC);
@@ -212,6 +376,8 @@ static int ahci_qoriq_phy_init(struct ah
writel(readl(qpriv->ecc_addr) | ECC_DIS_LS1088A,
qpriv->ecc_addr);
writel(AHCI_PORT_PHY_1_CFG, reg_base + PORT_PHY1);
+ writel(AHCI_PORT_PHY2_CFG, reg_base + PORT_PHY2);
+ writel(AHCI_PORT_PHY3_CFG, reg_base + PORT_PHY3);
writel(AHCI_PORT_TRANS_CFG, reg_base + PORT_TRANS);
if (qpriv->is_dmacoherent)
writel(AHCI_PORT_AXICC_CFG, reg_base + PORT_AXICC);
@@ -219,6 +385,8 @@ static int ahci_qoriq_phy_init(struct ah
case AHCI_LS2088A:
writel(AHCI_PORT_PHY_1_CFG, reg_base + PORT_PHY1);
+ writel(AHCI_PORT_PHY2_CFG, reg_base + PORT_PHY2);
+ writel(AHCI_PORT_PHY3_CFG, reg_base + PORT_PHY3);
writel(AHCI_PORT_TRANS_CFG, reg_base + PORT_TRANS);
if (qpriv->is_dmacoherent)
writel(AHCI_PORT_AXICC_CFG, reg_base + PORT_AXICC);
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -75,6 +75,7 @@
#define CREATE_TRACE_POINTS
#include <trace/events/libata.h>
+#include "ahci.h"
#include "libata.h"
#include "libata-transport.h"
@@ -4118,6 +4119,8 @@ int sata_link_hardreset(struct ata_link
*/
ata_msleep(link->ap, 1);
+ fsl_sata_errata_379364(link);
+
/* bring link back */
rc = sata_link_resume(link, timing, deadline);
if (rc)
|
