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EDAC/ghes: Unify CPER memory error location reporting 

Switch the GHES EDAC memory error reporting functions to use the common
CPER ones and get rid of code duplication.

  [ bp:
      - rewrite commit message, remove useless text
      - rip out useless reformatting
      - align function params on the opening brace
      - rename function to a more descriptive name
      - drop useless function exports
      - handle buffer lengths properly when printing other detail
      - remove useless casting
  ]

Signed-off-by: Shuai Xue <xueshuai@linux.alibaba.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lore.kernel.org/r/20220308144053.49090-3-xueshuai@linux.alibaba.com
This commit is contained in:
Shuai Xue 2022-03-08 22:40:52 +08:00 committed by Borislav Petkov
parent bdae796514
commit ed27b5df38
4 changed files with 41 additions and 164 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/edac/Kconfig
View File

@ -55,6 +55,7 @@ config EDAC_DECODE_MCE
config EDAC_GHES
bool "Output ACPI APEI/GHES BIOS detected errors via EDAC"
depends on ACPI_APEI_GHES && (EDAC=y)
select UEFI_CPER
help
Not all machines support hardware-driven error report. Some of those
provide a BIOS-driven error report mechanism via ACPI, using the

198
drivers/edac/ghes_edac.c
View File

@ -15,11 +15,13 @@
#include "edac_module.h"
#include <ras/ras_event.h>
#define OTHER_DETAIL_LEN 400
struct ghes_pvt {
struct mem_ctl_info *mci;
/* Buffers for the error handling routine */
char other_detail[400];
char other_detail[OTHER_DETAIL_LEN];
char msg[80];
};
@ -235,8 +237,34 @@ static void ghes_scan_system(void)
system_scanned = true;
}
static int print_mem_error_other_detail(const struct cper_sec_mem_err *mem, char *msg,
const char *location, unsigned int len)
{
u32 n;
if (!msg)
return 0;
n = 0;
len -= 1;
n += scnprintf(msg + n, len - n, "APEI location: %s ", location);
if (!(mem->validation_bits & CPER_MEM_VALID_ERROR_STATUS))
goto out;
n += scnprintf(msg + n, len - n, "status(0x%016llx): ", mem->error_status);
n += scnprintf(msg + n, len - n, "%s ", cper_mem_err_status_str(mem->error_status));
out:
msg[n] = '\0';
return n;
}
void ghes_edac_report_mem_error(int sev, struct cper_sec_mem_err *mem_err)
{
struct cper_mem_err_compact cmem;
struct edac_raw_error_desc *e;
struct mem_ctl_info *mci;
struct ghes_pvt *pvt;
@ -292,60 +320,10 @@ void ghes_edac_report_mem_error(int sev, struct cper_sec_mem_err *mem_err)
/* Error type, mapped on e->msg */
if (mem_err->validation_bits & CPER_MEM_VALID_ERROR_TYPE) {
u8 etype = mem_err->error_type;
p = pvt->msg;
switch (mem_err->error_type) {
case 0:
p += sprintf(p, "Unknown");
break;
case 1:
p += sprintf(p, "No error");
break;
case 2:
p += sprintf(p, "Single-bit ECC");
break;
case 3:
p += sprintf(p, "Multi-bit ECC");
break;
case 4:
p += sprintf(p, "Single-symbol ChipKill ECC");
break;
case 5:
p += sprintf(p, "Multi-symbol ChipKill ECC");
break;
case 6:
p += sprintf(p, "Master abort");
break;
case 7:
p += sprintf(p, "Target abort");
break;
case 8:
p += sprintf(p, "Parity Error");
break;
case 9:
p += sprintf(p, "Watchdog timeout");
break;
case 10:
p += sprintf(p, "Invalid address");
break;
case 11:
p += sprintf(p, "Mirror Broken");
break;
case 12:
p += sprintf(p, "Memory Sparing");
break;
case 13:
p += sprintf(p, "Scrub corrected error");
break;
case 14:
p += sprintf(p, "Scrub uncorrected error");
break;
case 15:
p += sprintf(p, "Physical Memory Map-out event");
break;
default:
p += sprintf(p, "reserved error (%d)",
mem_err->error_type);
}
p += snprintf(p, sizeof(pvt->msg), "%s", cper_mem_err_type_str(etype));
} else {
strcpy(pvt->msg, "unknown error");
}
@ -362,52 +340,19 @@ void ghes_edac_report_mem_error(int sev, struct cper_sec_mem_err *mem_err)
/* Memory error location, mapped on e->location */
p = e->location;
if (mem_err->validation_bits & CPER_MEM_VALID_NODE)
p += sprintf(p, "node:%d ", mem_err->node);
if (mem_err->validation_bits & CPER_MEM_VALID_CARD)
p += sprintf(p, "card:%d ", mem_err->card);
if (mem_err->validation_bits & CPER_MEM_VALID_MODULE)
p += sprintf(p, "module:%d ", mem_err->module);
if (mem_err->validation_bits & CPER_MEM_VALID_RANK_NUMBER)
p += sprintf(p, "rank:%d ", mem_err->rank);
if (mem_err->validation_bits & CPER_MEM_VALID_BANK)
p += sprintf(p, "bank:%d ", mem_err->bank);
if (mem_err->validation_bits & CPER_MEM_VALID_BANK_GROUP)
p += sprintf(p, "bank_group:%d ",
mem_err->bank >> CPER_MEM_BANK_GROUP_SHIFT);
if (mem_err->validation_bits & CPER_MEM_VALID_BANK_ADDRESS)
p += sprintf(p, "bank_address:%d ",
mem_err->bank & CPER_MEM_BANK_ADDRESS_MASK);
if (mem_err->validation_bits & (CPER_MEM_VALID_ROW | CPER_MEM_VALID_ROW_EXT)) {
u32 row = mem_err->row;
cper_mem_err_pack(mem_err, &cmem);
p += cper_mem_err_location(&cmem, p);
row |= cper_get_mem_extension(mem_err->validation_bits, mem_err->extended);
p += sprintf(p, "row:%d ", row);
}
if (mem_err->validation_bits & CPER_MEM_VALID_COLUMN)
p += sprintf(p, "col:%d ", mem_err->column);
if (mem_err->validation_bits & CPER_MEM_VALID_BIT_POSITION)
p += sprintf(p, "bit_pos:%d ", mem_err->bit_pos);
if (mem_err->validation_bits & CPER_MEM_VALID_MODULE_HANDLE) {
const char *bank = NULL, *device = NULL;
struct dimm_info *dimm;
dmi_memdev_name(mem_err->mem_dev_handle, &bank, &device);
if (bank != NULL && device != NULL)
p += sprintf(p, "DIMM location:%s %s ", bank, device);
else
p += sprintf(p, "DIMM DMI handle: 0x%.4x ",
mem_err->mem_dev_handle);
p += cper_dimm_err_location(&cmem, p);
dimm = find_dimm_by_handle(mci, mem_err->mem_dev_handle);
if (dimm) {
e->top_layer = dimm->idx;
strcpy(e->label, dimm->label);
}
}
if (mem_err->validation_bits & CPER_MEM_VALID_CHIP_ID)
p += sprintf(p, "chipID: %d ",
mem_err->extended >> CPER_MEM_CHIP_ID_SHIFT);
if (p > e->location)
*(p - 1) = '\0';
@ -416,78 +361,7 @@ void ghes_edac_report_mem_error(int sev, struct cper_sec_mem_err *mem_err)
/* All other fields are mapped on e->other_detail */
p = pvt->other_detail;
p += snprintf(p, sizeof(pvt->other_detail),
"APEI location: %s ", e->location);
if (mem_err->validation_bits & CPER_MEM_VALID_ERROR_STATUS) {
u64 status = mem_err->error_status;
p += sprintf(p, "status(0x%016llx): ", (long long)status);
switch ((status >> 8) & 0xff) {
case 1:
p += sprintf(p, "Error detected internal to the component ");
break;
case 16:
p += sprintf(p, "Error detected in the bus ");
break;
case 4:
p += sprintf(p, "Storage error in DRAM memory ");
break;
case 5:
p += sprintf(p, "Storage error in TLB ");
break;
case 6:
p += sprintf(p, "Storage error in cache ");
break;
case 7:
p += sprintf(p, "Error in one or more functional units ");
break;
case 8:
p += sprintf(p, "component failed self test ");
break;
case 9:
p += sprintf(p, "Overflow or undervalue of internal queue ");
break;
case 17:
p += sprintf(p, "Virtual address not found on IO-TLB or IO-PDIR ");
break;
case 18:
p += sprintf(p, "Improper access error ");
break;
case 19:
p += sprintf(p, "Access to a memory address which is not mapped to any component ");
break;
case 20:
p += sprintf(p, "Loss of Lockstep ");
break;
case 21:
p += sprintf(p, "Response not associated with a request ");
break;
case 22:
p += sprintf(p, "Bus parity error - must also set the A, C, or D Bits ");
break;
case 23:
p += sprintf(p, "Detection of a PATH_ERROR ");
break;
case 25:
p += sprintf(p, "Bus operation timeout ");
break;
case 26:
p += sprintf(p, "A read was issued to data that has been poisoned ");
break;
default:
p += sprintf(p, "reserved ");
break;
}
}
if (mem_err->validation_bits & CPER_MEM_VALID_REQUESTOR_ID)
p += sprintf(p, "requestorID: 0x%016llx ",
(long long)mem_err->requestor_id);
if (mem_err->validation_bits & CPER_MEM_VALID_RESPONDER_ID)
p += sprintf(p, "responderID: 0x%016llx ",
(long long)mem_err->responder_id);
if (mem_err->validation_bits & CPER_MEM_VALID_TARGET_ID)
p += sprintf(p, "targetID: 0x%016llx ",
(long long)mem_err->responder_id);
p += print_mem_error_other_detail(mem_err, p, e->location, OTHER_DETAIL_LEN);
if (p > pvt->other_detail)
*(p - 1) = '\0';

4
drivers/firmware/efi/cper.c
View File

@ -237,7 +237,7 @@ const char *cper_mem_err_status_str(u64 status)
}
EXPORT_SYMBOL_GPL(cper_mem_err_status_str);
static int cper_mem_err_location(struct cper_mem_err_compact *mem, char *msg)
int cper_mem_err_location(struct cper_mem_err_compact *mem, char *msg)
{
u32 len, n;
@ -291,7 +291,7 @@ static int cper_mem_err_location(struct cper_mem_err_compact *mem, char *msg)
return n;
}
static int cper_dimm_err_location(struct cper_mem_err_compact *mem, char *msg)
int cper_dimm_err_location(struct cper_mem_err_compact *mem, char *msg)
{
u32 len, n;
const char *bank = NULL, *device = NULL;

2
include/linux/cper.h
View File

@ -569,5 +569,7 @@ void cper_print_proc_arm(const char *pfx,
const struct cper_sec_proc_arm *proc);
void cper_print_proc_ia(const char *pfx,
const struct cper_sec_proc_ia *proc);
int cper_mem_err_location(struct cper_mem_err_compact *mem, char *msg);
int cper_dimm_err_location(struct cper_mem_err_compact *mem, char *msg);
#endif