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path: root/drivers/ata/ahci_qoriq.c
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Diffstat (limited to 'drivers/ata/ahci_qoriq.c')
-rw-r--r--drivers/ata/ahci_qoriq.c168
1 files changed, 162 insertions, 6 deletions
diff --git a/drivers/ata/ahci_qoriq.c b/drivers/ata/ahci_qoriq.c
index a330307d3201..e057164ac9bb 100644
--- a/drivers/ata/ahci_qoriq.c
+++ b/drivers/ata/ahci_qoriq.c
@@ -6,6 +6,7 @@
* Tang Yuantian <Yuantian.Tang@freescale.com>
*/
+#include <linux/acpi.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/pm.h>
@@ -47,6 +48,27 @@
#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_LS1028A,
@@ -80,6 +102,132 @@ static const struct of_device_id ahci_qoriq_of_match[] = {
};
MODULE_DEVICE_TABLE(of, ahci_qoriq_of_match);
+static const struct acpi_device_id ahci_qoriq_acpi_match[] = {
+ {"NXP0004", .driver_data = (kernel_ulong_t)AHCI_LX2160A},
+ { }
+};
+MODULE_DEVICE_TABLE(acpi, ahci_qoriq_acpi_match);
+
+static void fsl_sata_errata_379364(bool select)
+{
+ int val = 0;
+ void __iomem *rcw_base = NULL;
+ void __iomem *serdes_base = NULL;
+ void __iomem *dev_con_base = NULL;
+
+ if (select) {
+ dev_con_base = ioremap(DEVICE_CONFIG_REG_BASE, PAGE_SIZE);
+ if (!dev_con_base)
+ 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)
+ goto dev_unmap;
+
+ rcw_base = ioremap(RCWSR29_BASE, PAGE_SIZE);
+ if (!rcw_base)
+ goto serdes_unmap;
+
+ msleep(20);
+
+ 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;
+ }
+ } else {
+ return;
+ }
+
+ iounmap(rcw_base);
+serdes_unmap:
+ iounmap(serdes_base);
+dev_unmap:
+ iounmap(dev_con_base);
+}
+
static int ahci_qoriq_hardreset(struct ata_link *link, unsigned int *class,
unsigned long deadline)
{
@@ -95,6 +243,7 @@ static int ahci_qoriq_hardreset(struct ata_link *link, unsigned int *class,
bool online;
int rc;
bool ls1021a_workaround = (qoriq_priv->type == AHCI_LS1021A);
+ bool lx2160a_workaround = (qoriq_priv->type == AHCI_LX2160A);
DPRINTK("ENTER\n");
@@ -121,6 +270,8 @@ static int ahci_qoriq_hardreset(struct ata_link *link, unsigned int *class,
tf.command = ATA_BUSY;
ata_tf_to_fis(&tf, 0, 0, d2h_fis);
+ fsl_sata_errata_379364(lx2160a_workaround);
+
rc = sata_link_hardreset(link, timing, deadline, &online,
ahci_check_ready);
@@ -255,6 +406,7 @@ static int ahci_qoriq_phy_init(struct ahci_host_priv *hpriv)
static int ahci_qoriq_probe(struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
+ const struct acpi_device_id *acpi_id;
struct device *dev = &pdev->dev;
struct ahci_host_priv *hpriv;
struct ahci_qoriq_priv *qoriq_priv;
@@ -267,19 +419,21 @@ static int ahci_qoriq_probe(struct platform_device *pdev)
return PTR_ERR(hpriv);
of_id = of_match_node(ahci_qoriq_of_match, np);
- if (!of_id)
+ acpi_id = acpi_match_device(ahci_qoriq_acpi_match, &pdev->dev);
+ if (!(of_id || acpi_id))
return -ENODEV;
qoriq_priv = devm_kzalloc(dev, sizeof(*qoriq_priv), GFP_KERNEL);
if (!qoriq_priv)
return -ENOMEM;
- qoriq_priv->type = (enum ahci_qoriq_type)of_id->data;
+ if (of_id)
+ qoriq_priv->type = (enum ahci_qoriq_type)of_id->data;
+ else
+ qoriq_priv->type = (enum ahci_qoriq_type)acpi_id->driver_data;
if (unlikely(!ecc_initialized)) {
- res = platform_get_resource_byname(pdev,
- IORESOURCE_MEM,
- "sata-ecc");
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
if (res) {
qoriq_priv->ecc_addr =
devm_ioremap_resource(dev, res);
@@ -288,7 +442,8 @@ static int ahci_qoriq_probe(struct platform_device *pdev)
}
}
- qoriq_priv->is_dmacoherent = of_dma_is_coherent(np);
+ if (device_get_dma_attr(&pdev->dev) == DEV_DMA_COHERENT)
+ qoriq_priv->is_dmacoherent = true;
rc = ahci_platform_enable_resources(hpriv);
if (rc)
@@ -354,6 +509,7 @@ static struct platform_driver ahci_qoriq_driver = {
.driver = {
.name = DRV_NAME,
.of_match_table = ahci_qoriq_of_match,
+ .acpi_match_table = ahci_qoriq_acpi_match,
.pm = &ahci_qoriq_pm_ops,
},
};
generated by cgit v1.2.3 (git 2.0.4) at 2024-06-02 12:49:19 +0000