summaryrefslogtreecommitdiffstats
path: root/drivers/edac/highbank_mc_edac.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/edac/highbank_mc_edac.c')
-rw-r--r--drivers/edac/highbank_mc_edac.c175
1 files changed, 99 insertions, 76 deletions
diff --git a/drivers/edac/highbank_mc_edac.c b/drivers/edac/highbank_mc_edac.c
index 4695dd2d71fd..f784de1dc793 100644
--- a/drivers/edac/highbank_mc_edac.c
+++ b/drivers/edac/highbank_mc_edac.c
@@ -26,31 +26,40 @@
#include "edac_module.h"
/* DDR Ctrlr Error Registers */
-#define HB_DDR_ECC_OPT 0x128
-#define HB_DDR_ECC_U_ERR_ADDR 0x130
-#define HB_DDR_ECC_U_ERR_STAT 0x134
-#define HB_DDR_ECC_U_ERR_DATAL 0x138
-#define HB_DDR_ECC_U_ERR_DATAH 0x13c
-#define HB_DDR_ECC_C_ERR_ADDR 0x140
-#define HB_DDR_ECC_C_ERR_STAT 0x144
-#define HB_DDR_ECC_C_ERR_DATAL 0x148
-#define HB_DDR_ECC_C_ERR_DATAH 0x14c
-#define HB_DDR_ECC_INT_STATUS 0x180
-#define HB_DDR_ECC_INT_ACK 0x184
-#define HB_DDR_ECC_U_ERR_ID 0x424
-#define HB_DDR_ECC_C_ERR_ID 0x428
-#define HB_DDR_ECC_INT_STAT_CE 0x8
-#define HB_DDR_ECC_INT_STAT_DOUBLE_CE 0x10
-#define HB_DDR_ECC_INT_STAT_UE 0x20
-#define HB_DDR_ECC_INT_STAT_DOUBLE_UE 0x40
+#define HB_DDR_ECC_ERR_BASE 0x128
+#define MW_DDR_ECC_ERR_BASE 0x1b4
+
+#define HB_DDR_ECC_OPT 0x00
+#define HB_DDR_ECC_U_ERR_ADDR 0x08
+#define HB_DDR_ECC_U_ERR_STAT 0x0c
+#define HB_DDR_ECC_U_ERR_DATAL 0x10
+#define HB_DDR_ECC_U_ERR_DATAH 0x14
+#define HB_DDR_ECC_C_ERR_ADDR 0x18
+#define HB_DDR_ECC_C_ERR_STAT 0x1c
+#define HB_DDR_ECC_C_ERR_DATAL 0x20
+#define HB_DDR_ECC_C_ERR_DATAH 0x24
#define HB_DDR_ECC_OPT_MODE_MASK 0x3
#define HB_DDR_ECC_OPT_FWC 0x100
#define HB_DDR_ECC_OPT_XOR_SHIFT 16
+/* DDR Ctrlr Interrupt Registers */
+
+#define HB_DDR_ECC_INT_BASE 0x180
+#define MW_DDR_ECC_INT_BASE 0x218
+
+#define HB_DDR_ECC_INT_STATUS 0x00
+#define HB_DDR_ECC_INT_ACK 0x04
+
+#define HB_DDR_ECC_INT_STAT_CE 0x8
+#define HB_DDR_ECC_INT_STAT_DOUBLE_CE 0x10
+#define HB_DDR_ECC_INT_STAT_UE 0x20
+#define HB_DDR_ECC_INT_STAT_DOUBLE_UE 0x40
+
struct hb_mc_drvdata {
- void __iomem *mc_vbase;
+ void __iomem *mc_err_base;
+ void __iomem *mc_int_base;
};
static irqreturn_t highbank_mc_err_handler(int irq, void *dev_id)
@@ -60,10 +69,10 @@ static irqreturn_t highbank_mc_err_handler(int irq, void *dev_id)
u32 status, err_addr;
/* Read the interrupt status register */
- status = readl(drvdata->mc_vbase + HB_DDR_ECC_INT_STATUS);
+ status = readl(drvdata->mc_int_base + HB_DDR_ECC_INT_STATUS);
if (status & HB_DDR_ECC_INT_STAT_UE) {
- err_addr = readl(drvdata->mc_vbase + HB_DDR_ECC_U_ERR_ADDR);
+ err_addr = readl(drvdata->mc_err_base + HB_DDR_ECC_U_ERR_ADDR);
edac_mc_handle_error(HW_EVENT_ERR_UNCORRECTED, mci, 1,
err_addr >> PAGE_SHIFT,
err_addr & ~PAGE_MASK, 0,
@@ -71,9 +80,9 @@ static irqreturn_t highbank_mc_err_handler(int irq, void *dev_id)
mci->ctl_name, "");
}
if (status & HB_DDR_ECC_INT_STAT_CE) {
- u32 syndrome = readl(drvdata->mc_vbase + HB_DDR_ECC_C_ERR_STAT);
+ u32 syndrome = readl(drvdata->mc_err_base + HB_DDR_ECC_C_ERR_STAT);
syndrome = (syndrome >> 8) & 0xff;
- err_addr = readl(drvdata->mc_vbase + HB_DDR_ECC_C_ERR_ADDR);
+ err_addr = readl(drvdata->mc_err_base + HB_DDR_ECC_C_ERR_ADDR);
edac_mc_handle_error(HW_EVENT_ERR_CORRECTED, mci, 1,
err_addr >> PAGE_SHIFT,
err_addr & ~PAGE_MASK, syndrome,
@@ -82,66 +91,79 @@ static irqreturn_t highbank_mc_err_handler(int irq, void *dev_id)
}
/* clear the error, clears the interrupt */
- writel(status, drvdata->mc_vbase + HB_DDR_ECC_INT_ACK);
+ writel(status, drvdata->mc_int_base + HB_DDR_ECC_INT_ACK);
return IRQ_HANDLED;
}
-#ifdef CONFIG_EDAC_DEBUG
-static ssize_t highbank_mc_err_inject_write(struct file *file,
- const char __user *data,
- size_t count, loff_t *ppos)
+static void highbank_mc_err_inject(struct mem_ctl_info *mci, u8 synd)
{
- struct mem_ctl_info *mci = file->private_data;
struct hb_mc_drvdata *pdata = mci->pvt_info;
- char buf[32];
- size_t buf_size;
u32 reg;
+
+ reg = readl(pdata->mc_err_base + HB_DDR_ECC_OPT);
+ reg &= HB_DDR_ECC_OPT_MODE_MASK;
+ reg |= (synd << HB_DDR_ECC_OPT_XOR_SHIFT) | HB_DDR_ECC_OPT_FWC;
+ writel(reg, pdata->mc_err_base + HB_DDR_ECC_OPT);
+}
+
+#define to_mci(k) container_of(k, struct mem_ctl_info, dev)
+
+static ssize_t highbank_mc_inject_ctrl(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ struct mem_ctl_info *mci = to_mci(dev);
u8 synd;
- buf_size = min(count, (sizeof(buf)-1));
- if (copy_from_user(buf, data, buf_size))
- return -EFAULT;
- buf[buf_size] = 0;
+ if (kstrtou8(buf, 16, &synd))
+ return -EINVAL;
- if (!kstrtou8(buf, 16, &synd)) {
- reg = readl(pdata->mc_vbase + HB_DDR_ECC_OPT);
- reg &= HB_DDR_ECC_OPT_MODE_MASK;
- reg |= (synd << HB_DDR_ECC_OPT_XOR_SHIFT) | HB_DDR_ECC_OPT_FWC;
- writel(reg, pdata->mc_vbase + HB_DDR_ECC_OPT);
- }
+ highbank_mc_err_inject(mci, synd);
return count;
}
-static const struct file_operations highbank_mc_debug_inject_fops = {
- .open = simple_open,
- .write = highbank_mc_err_inject_write,
- .llseek = generic_file_llseek,
+static DEVICE_ATTR(inject_ctrl, S_IWUSR, NULL, highbank_mc_inject_ctrl);
+
+struct hb_mc_settings {
+ int err_offset;
+ int int_offset;
};
-static void highbank_mc_create_debugfs_nodes(struct mem_ctl_info *mci)
-{
- if (mci->debugfs)
- debugfs_create_file("inject_ctrl", S_IWUSR, mci->debugfs, mci,
- &highbank_mc_debug_inject_fops);
-;
-}
-#else
-static void highbank_mc_create_debugfs_nodes(struct mem_ctl_info *mci)
-{}
-#endif
+static struct hb_mc_settings hb_settings = {
+ .err_offset = HB_DDR_ECC_ERR_BASE,
+ .int_offset = HB_DDR_ECC_INT_BASE,
+};
+
+static struct hb_mc_settings mw_settings = {
+ .err_offset = MW_DDR_ECC_ERR_BASE,
+ .int_offset = MW_DDR_ECC_INT_BASE,
+};
+
+static struct of_device_id hb_ddr_ctrl_of_match[] = {
+ { .compatible = "calxeda,hb-ddr-ctrl", .data = &hb_settings },
+ { .compatible = "calxeda,ecx-2000-ddr-ctrl", .data = &mw_settings },
+ {},
+};
+MODULE_DEVICE_TABLE(of, hb_ddr_ctrl_of_match);
static int highbank_mc_probe(struct platform_device *pdev)
{
+ const struct of_device_id *id;
+ const struct hb_mc_settings *settings;
struct edac_mc_layer layers[2];
struct mem_ctl_info *mci;
struct hb_mc_drvdata *drvdata;
struct dimm_info *dimm;
struct resource *r;
+ void __iomem *base;
u32 control;
int irq;
int res = 0;
+ id = of_match_device(hb_ddr_ctrl_of_match, &pdev->dev);
+ if (!id)
+ return -ENODEV;
+
layers[0].type = EDAC_MC_LAYER_CHIP_SELECT;
layers[0].size = 1;
layers[0].is_virt_csrow = true;
@@ -174,35 +196,31 @@ static int highbank_mc_probe(struct platform_device *pdev)
goto err;
}
- drvdata->mc_vbase = devm_ioremap(&pdev->dev,
- r->start, resource_size(r));
- if (!drvdata->mc_vbase) {
+ base = devm_ioremap(&pdev->dev, r->start, resource_size(r));
+ if (!base) {
dev_err(&pdev->dev, "Unable to map regs\n");
res = -ENOMEM;
goto err;
}
- control = readl(drvdata->mc_vbase + HB_DDR_ECC_OPT) & 0x3;
+ settings = id->data;
+ drvdata->mc_err_base = base + settings->err_offset;
+ drvdata->mc_int_base = base + settings->int_offset;
+
+ control = readl(drvdata->mc_err_base + HB_DDR_ECC_OPT) & 0x3;
if (!control || (control == 0x2)) {
dev_err(&pdev->dev, "No ECC present, or ECC disabled\n");
res = -ENODEV;
goto err;
}
- irq = platform_get_irq(pdev, 0);
- res = devm_request_irq(&pdev->dev, irq, highbank_mc_err_handler,
- 0, dev_name(&pdev->dev), mci);
- if (res < 0) {
- dev_err(&pdev->dev, "Unable to request irq %d\n", irq);
- goto err;
- }
-
mci->mtype_cap = MEM_FLAG_DDR3;
mci->edac_ctl_cap = EDAC_FLAG_NONE | EDAC_FLAG_SECDED;
mci->edac_cap = EDAC_FLAG_SECDED;
- mci->mod_name = dev_name(&pdev->dev);
+ mci->mod_name = pdev->dev.driver->name;
mci->mod_ver = "1";
- mci->ctl_name = dev_name(&pdev->dev);
+ mci->ctl_name = id->compatible;
+ mci->dev_name = dev_name(&pdev->dev);
mci->scrub_mode = SCRUB_SW_SRC;
/* Only a single 4GB DIMM is supported */
@@ -217,10 +235,20 @@ static int highbank_mc_probe(struct platform_device *pdev)
if (res < 0)
goto err;
- highbank_mc_create_debugfs_nodes(mci);
+ irq = platform_get_irq(pdev, 0);
+ res = devm_request_irq(&pdev->dev, irq, highbank_mc_err_handler,
+ 0, dev_name(&pdev->dev), mci);
+ if (res < 0) {
+ dev_err(&pdev->dev, "Unable to request irq %d\n", irq);
+ goto err2;
+ }
+
+ device_create_file(&mci->dev, &dev_attr_inject_ctrl);
devres_close_group(&pdev->dev, NULL);
return 0;
+err2:
+ edac_mc_del_mc(&pdev->dev);
err:
devres_release_group(&pdev->dev, NULL);
edac_mc_free(mci);
@@ -231,17 +259,12 @@ static int highbank_mc_remove(struct platform_device *pdev)
{
struct mem_ctl_info *mci = platform_get_drvdata(pdev);
+ device_remove_file(&mci->dev, &dev_attr_inject_ctrl);
edac_mc_del_mc(&pdev->dev);
edac_mc_free(mci);
return 0;
}
-static const struct of_device_id hb_ddr_ctrl_of_match[] = {
- { .compatible = "calxeda,hb-ddr-ctrl", },
- {},
-};
-MODULE_DEVICE_TABLE(of, hb_ddr_ctrl_of_match);
-
static struct platform_driver highbank_mc_edac_driver = {
.probe = highbank_mc_probe,
.remove = highbank_mc_remove,
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-21 03:52:19 +0100