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path: root/drivers/edac/octeon_edac-lmc.c
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Diffstat (limited to 'drivers/edac/octeon_edac-lmc.c')
-rw-r--r--drivers/edac/octeon_edac-lmc.c162
1 files changed, 150 insertions, 12 deletions
diff --git a/drivers/edac/octeon_edac-lmc.c b/drivers/edac/octeon_edac-lmc.c
index 93412d6b3af1..f7176b95b4fe 100644
--- a/drivers/edac/octeon_edac-lmc.c
+++ b/drivers/edac/octeon_edac-lmc.c
@@ -5,21 +5,36 @@
*
* Copyright (C) 2009 Wind River Systems,
* written by Ralf Baechle <ralf@linux-mips.org>
+ *
+ * Copyright (c) 2013 by Cisco Systems, Inc.
+ * All rights reserved.
*/
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/io.h>
#include <linux/edac.h>
+#include <linux/ctype.h>
#include <asm/octeon/octeon.h>
#include <asm/octeon/cvmx-lmcx-defs.h>
-#include "edac_core.h"
#include "edac_module.h"
#define OCTEON_MAX_MC 4
+#define to_mci(k) container_of(k, struct mem_ctl_info, dev)
+
+struct octeon_lmc_pvt {
+ unsigned long inject;
+ unsigned long error_type;
+ unsigned long dimm;
+ unsigned long rank;
+ unsigned long bank;
+ unsigned long row;
+ unsigned long col;
+};
+
static void octeon_lmc_edac_poll(struct mem_ctl_info *mci)
{
union cvmx_lmcx_mem_cfg0 cfg0;
@@ -55,14 +70,32 @@ static void octeon_lmc_edac_poll(struct mem_ctl_info *mci)
static void octeon_lmc_edac_poll_o2(struct mem_ctl_info *mci)
{
+ struct octeon_lmc_pvt *pvt = mci->pvt_info;
union cvmx_lmcx_int int_reg;
bool do_clear = false;
char msg[64];
- int_reg.u64 = cvmx_read_csr(CVMX_LMCX_INT(mci->mc_idx));
+ if (!pvt->inject)
+ int_reg.u64 = cvmx_read_csr(CVMX_LMCX_INT(mci->mc_idx));
+ else {
+ int_reg.u64 = 0;
+ if (pvt->error_type == 1)
+ int_reg.s.sec_err = 1;
+ if (pvt->error_type == 2)
+ int_reg.s.ded_err = 1;
+ }
+
if (int_reg.s.sec_err || int_reg.s.ded_err) {
union cvmx_lmcx_fadr fadr;
- fadr.u64 = cvmx_read_csr(CVMX_LMCX_FADR(mci->mc_idx));
+ if (likely(!pvt->inject))
+ fadr.u64 = cvmx_read_csr(CVMX_LMCX_FADR(mci->mc_idx));
+ else {
+ fadr.cn61xx.fdimm = pvt->dimm;
+ fadr.cn61xx.fbunk = pvt->rank;
+ fadr.cn61xx.fbank = pvt->bank;
+ fadr.cn61xx.frow = pvt->row;
+ fadr.cn61xx.fcol = pvt->col;
+ }
snprintf(msg, sizeof(msg),
"DIMM %d rank %d bank %d row %d col %d",
fadr.cn61xx.fdimm, fadr.cn61xx.fbunk,
@@ -82,21 +115,126 @@ static void octeon_lmc_edac_poll_o2(struct mem_ctl_info *mci)
int_reg.s.ded_err = -1; /* Done, re-arm */
do_clear = true;
}
- if (do_clear)
- cvmx_write_csr(CVMX_LMCX_INT(mci->mc_idx), int_reg.u64);
+
+ if (do_clear) {
+ if (likely(!pvt->inject))
+ cvmx_write_csr(CVMX_LMCX_INT(mci->mc_idx), int_reg.u64);
+ else
+ pvt->inject = 0;
+ }
+}
+
+/************************ MC SYSFS parts ***********************************/
+
+/* Only a couple naming differences per template, so very similar */
+#define TEMPLATE_SHOW(reg) \
+static ssize_t octeon_mc_inject_##reg##_show(struct device *dev, \
+ struct device_attribute *attr, \
+ char *data) \
+{ \
+ struct mem_ctl_info *mci = to_mci(dev); \
+ struct octeon_lmc_pvt *pvt = mci->pvt_info; \
+ return sprintf(data, "%016llu\n", (u64)pvt->reg); \
+}
+
+#define TEMPLATE_STORE(reg) \
+static ssize_t octeon_mc_inject_##reg##_store(struct device *dev, \
+ struct device_attribute *attr, \
+ const char *data, size_t count) \
+{ \
+ struct mem_ctl_info *mci = to_mci(dev); \
+ struct octeon_lmc_pvt *pvt = mci->pvt_info; \
+ if (isdigit(*data)) { \
+ if (!kstrtoul(data, 0, &pvt->reg)) \
+ return count; \
+ } \
+ return 0; \
}
+TEMPLATE_SHOW(inject);
+TEMPLATE_STORE(inject);
+TEMPLATE_SHOW(dimm);
+TEMPLATE_STORE(dimm);
+TEMPLATE_SHOW(bank);
+TEMPLATE_STORE(bank);
+TEMPLATE_SHOW(rank);
+TEMPLATE_STORE(rank);
+TEMPLATE_SHOW(row);
+TEMPLATE_STORE(row);
+TEMPLATE_SHOW(col);
+TEMPLATE_STORE(col);
+
+static ssize_t octeon_mc_inject_error_type_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *data,
+ size_t count)
+{
+ struct mem_ctl_info *mci = to_mci(dev);
+ struct octeon_lmc_pvt *pvt = mci->pvt_info;
+
+ if (!strncmp(data, "single", 6))
+ pvt->error_type = 1;
+ else if (!strncmp(data, "double", 6))
+ pvt->error_type = 2;
+
+ return count;
+}
+
+static ssize_t octeon_mc_inject_error_type_show(struct device *dev,
+ struct device_attribute *attr,
+ char *data)
+{
+ struct mem_ctl_info *mci = to_mci(dev);
+ struct octeon_lmc_pvt *pvt = mci->pvt_info;
+ if (pvt->error_type == 1)
+ return sprintf(data, "single");
+ else if (pvt->error_type == 2)
+ return sprintf(data, "double");
+
+ return 0;
+}
+
+static DEVICE_ATTR(inject, S_IRUGO | S_IWUSR,
+ octeon_mc_inject_inject_show, octeon_mc_inject_inject_store);
+static DEVICE_ATTR(error_type, S_IRUGO | S_IWUSR,
+ octeon_mc_inject_error_type_show, octeon_mc_inject_error_type_store);
+static DEVICE_ATTR(dimm, S_IRUGO | S_IWUSR,
+ octeon_mc_inject_dimm_show, octeon_mc_inject_dimm_store);
+static DEVICE_ATTR(rank, S_IRUGO | S_IWUSR,
+ octeon_mc_inject_rank_show, octeon_mc_inject_rank_store);
+static DEVICE_ATTR(bank, S_IRUGO | S_IWUSR,
+ octeon_mc_inject_bank_show, octeon_mc_inject_bank_store);
+static DEVICE_ATTR(row, S_IRUGO | S_IWUSR,
+ octeon_mc_inject_row_show, octeon_mc_inject_row_store);
+static DEVICE_ATTR(col, S_IRUGO | S_IWUSR,
+ octeon_mc_inject_col_show, octeon_mc_inject_col_store);
+
+static struct attribute *octeon_dev_attrs[] = {
+ &dev_attr_inject.attr,
+ &dev_attr_error_type.attr,
+ &dev_attr_dimm.attr,
+ &dev_attr_rank.attr,
+ &dev_attr_bank.attr,
+ &dev_attr_row.attr,
+ &dev_attr_col.attr,
+ NULL
+};
+
+ATTRIBUTE_GROUPS(octeon_dev);
+
static int octeon_lmc_edac_probe(struct platform_device *pdev)
{
struct mem_ctl_info *mci;
struct edac_mc_layer layers[1];
int mc = pdev->id;
+ opstate_init();
+
layers[0].type = EDAC_MC_LAYER_CHANNEL;
layers[0].size = 1;
layers[0].is_virt_csrow = false;
- if (OCTEON_IS_MODEL(OCTEON_FAM_1_PLUS)) {
+ if (OCTEON_IS_OCTEON1PLUS()) {
union cvmx_lmcx_mem_cfg0 cfg0;
cfg0.u64 = cvmx_read_csr(CVMX_LMCX_MEM_CFG0(0));
@@ -105,7 +243,7 @@ static int octeon_lmc_edac_probe(struct platform_device *pdev)
return 0;
}
- mci = edac_mc_alloc(mc, ARRAY_SIZE(layers), layers, 0);
+ mci = edac_mc_alloc(mc, ARRAY_SIZE(layers), layers, sizeof(struct octeon_lmc_pvt));
if (!mci)
return -ENXIO;
@@ -116,7 +254,7 @@ static int octeon_lmc_edac_probe(struct platform_device *pdev)
mci->ctl_name = "octeon-lmc-err";
mci->edac_check = octeon_lmc_edac_poll;
- if (edac_mc_add_mc(mci)) {
+ if (edac_mc_add_mc_with_groups(mci, octeon_dev_groups)) {
dev_err(&pdev->dev, "edac_mc_add_mc() failed\n");
edac_mc_free(mci);
return -ENXIO;
@@ -137,7 +275,7 @@ static int octeon_lmc_edac_probe(struct platform_device *pdev)
return 0;
}
- mci = edac_mc_alloc(mc, ARRAY_SIZE(layers), layers, 0);
+ mci = edac_mc_alloc(mc, ARRAY_SIZE(layers), layers, sizeof(struct octeon_lmc_pvt));
if (!mci)
return -ENXIO;
@@ -148,7 +286,7 @@ static int octeon_lmc_edac_probe(struct platform_device *pdev)
mci->ctl_name = "co_lmc_err";
mci->edac_check = octeon_lmc_edac_poll_o2;
- if (edac_mc_add_mc(mci)) {
+ if (edac_mc_add_mc_with_groups(mci, octeon_dev_groups)) {
dev_err(&pdev->dev, "edac_mc_add_mc() failed\n");
edac_mc_free(mci);
return -ENXIO;
@@ -164,13 +302,12 @@ static int octeon_lmc_edac_probe(struct platform_device *pdev)
return 0;
}
-static int octeon_lmc_edac_remove(struct platform_device *pdev)
+static void octeon_lmc_edac_remove(struct platform_device *pdev)
{
struct mem_ctl_info *mci = platform_get_drvdata(pdev);
edac_mc_del_mc(&pdev->dev);
edac_mc_free(mci);
- return 0;
}
static struct platform_driver octeon_lmc_edac_driver = {
@@ -182,5 +319,6 @@ static struct platform_driver octeon_lmc_edac_driver = {
};
module_platform_driver(octeon_lmc_edac_driver);
+MODULE_DESCRIPTION("Cavium Octeon DRAM Memory Controller (LMC) EDAC driver");
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Ralf Baechle <ralf@linux-mips.org>");
generated by cgit (git 2.34.1) at 2025-12-25 10:26:44 +0000