mirror of
https://github.com/FEX-Emu/linux.git
synced 2024-12-27 11:55:53 +00:00
EDAC: Octeon: Add error injection support
This adds an ad-hoc error injection method. Octeon II doesn't have hardware support for injection, so this simulates it. Signed-off-by: Daniel Walker <dwalker@fifo99.com> Cc: David Daney <david.daney@cavium.com> Cc: Doug Thompson <dougthompson@xmission.com> Cc: linux-edac@vger.kernel.org Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/5873/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Daniel Walker
Ralf Baechle
parent
5331de0570
commit
1bc021e815
@ -5,12 +5,16 @@
|
||||
*
|
||||
* 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>
|
||||
@ -20,6 +24,18 @@
|
||||
|
||||
#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 +71,31 @@ 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 {
|
||||
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,
|
||||
@ -82,8 +115,128 @@ 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 int octeon_set_mc_sysfs_attributes(struct mem_ctl_info *mci)
|
||||
{
|
||||
int rc;
|
||||
|
||||
rc = device_create_file(&mci->dev, &dev_attr_inject);
|
||||
if (rc < 0)
|
||||
return rc;
|
||||
rc = device_create_file(&mci->dev, &dev_attr_error_type);
|
||||
if (rc < 0)
|
||||
return rc;
|
||||
rc = device_create_file(&mci->dev, &dev_attr_dimm);
|
||||
if (rc < 0)
|
||||
return rc;
|
||||
rc = device_create_file(&mci->dev, &dev_attr_rank);
|
||||
if (rc < 0)
|
||||
return rc;
|
||||
rc = device_create_file(&mci->dev, &dev_attr_bank);
|
||||
if (rc < 0)
|
||||
return rc;
|
||||
rc = device_create_file(&mci->dev, &dev_attr_row);
|
||||
if (rc < 0)
|
||||
return rc;
|
||||
rc = device_create_file(&mci->dev, &dev_attr_col);
|
||||
if (rc < 0)
|
||||
return rc;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int octeon_lmc_edac_probe(struct platform_device *pdev)
|
||||
@ -107,7 +260,7 @@ 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;
|
||||
|
||||
@ -124,6 +277,12 @@ static int octeon_lmc_edac_probe(struct platform_device *pdev)
|
||||
return -ENXIO;
|
||||
}
|
||||
|
||||
if (octeon_set_mc_sysfs_attributes(mci)) {
|
||||
dev_err(&pdev->dev, "octeon_set_mc_sysfs_attributes() failed\n");
|
||||
return -ENXIO;
|
||||
}
|
||||
|
||||
|
||||
cfg0.u64 = cvmx_read_csr(CVMX_LMCX_MEM_CFG0(mc));
|
||||
cfg0.s.intr_ded_ena = 0; /* We poll */
|
||||
cfg0.s.intr_sec_ena = 0;
|
||||
@ -139,7 +298,7 @@ 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;
|
||||
|
||||
@ -156,6 +315,12 @@ static int octeon_lmc_edac_probe(struct platform_device *pdev)
|
||||
return -ENXIO;
|
||||
}
|
||||
|
||||
if (octeon_set_mc_sysfs_attributes(mci)) {
|
||||
dev_err(&pdev->dev, "octeon_set_mc_sysfs_attributes() failed\n");
|
||||
return -ENXIO;
|
||||
}
|
||||
|
||||
|
||||
en.u64 = cvmx_read_csr(CVMX_LMCX_MEM_CFG0(mc));
|
||||
en.s.intr_ded_ena = 0; /* We poll */
|
||||
en.s.intr_sec_ena = 0;
|
||||
|
||||
Loading…
Reference in New Issue
Block a user