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ras: acpi/apei: cper: add support for generic data v3 structure 

The ACPI 6.1 spec adds a new revision of the generic error data
entry structure. Add support to handle the new structure as well
as properly verify and iterate through the generic data entries.

Signed-off-by: Tyler Baicar <tbaicar@codeaurora.org>
CC: Jonathan (Zhixiong) Zhang <zjzhang@codeaurora.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
zero-colors
Tyler Baicar 2017-06-21 12:17:05 -06:00 committed by Will Deacon
parent 42aa560446
commit bbcc2e7b64
3 changed files with 63 additions and 21 deletions
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11
drivers/acpi/apei/ghes.c
View File

@ -428,8 +428,7 @@ static void ghes_handle_memory_failure(struct acpi_hest_generic_data *gdata, int
unsigned long pfn;
int flags = -1;
int sec_sev = ghes_severity(gdata->error_severity);
struct cper_sec_mem_err *mem_err;
mem_err = (struct cper_sec_mem_err *)(gdata + 1);
struct cper_sec_mem_err *mem_err = acpi_hest_get_payload(gdata);
if (!(mem_err->validation_bits & CPER_MEM_VALID_PA))
return;
@ -466,8 +465,8 @@ static void ghes_do_proc(struct ghes *ghes,
sec_type = (guid_t *)gdata->section_type;
sec_sev = ghes_severity(gdata->error_severity);
if (guid_equal(sec_type, &CPER_SEC_PLATFORM_MEM)) {
struct cper_sec_mem_err *mem_err;
mem_err = (struct cper_sec_mem_err *)(gdata+1);
struct cper_sec_mem_err *mem_err = acpi_hest_get_payload(gdata);
ghes_edac_report_mem_error(ghes, sev, mem_err);
arch_apei_report_mem_error(sev, mem_err);
@ -475,8 +474,8 @@ static void ghes_do_proc(struct ghes *ghes,
}
#ifdef CONFIG_ACPI_APEI_PCIEAER
else if (guid_equal(sec_type, &CPER_SEC_PCIE)) {
struct cper_sec_pcie *pcie_err;
pcie_err = (struct cper_sec_pcie *)(gdata+1);
struct cper_sec_pcie *pcie_err = acpi_hest_get_payload(gdata);
if (sev == GHES_SEV_RECOVERABLE &&
sec_sev == GHES_SEV_RECOVERABLE &&
pcie_err->validation_bits & CPER_PCIE_VALID_DEVICE_ID &&

37
drivers/firmware/efi/cper.c
View File

@ -32,6 +32,7 @@
#include <linux/acpi.h>
#include <linux/pci.h>
#include <linux/aer.h>
#include <acpi/ghes.h>
#define INDENT_SP " "
@ -386,8 +387,9 @@ static void cper_print_pcie(const char *pfx, const struct cper_sec_pcie *pcie,
pfx, pcie->bridge.secondary_status, pcie->bridge.control);
}
static void cper_estatus_print_section(
const char *pfx, const struct acpi_hest_generic_data *gdata, int sec_no)
static void
cper_estatus_print_section(const char *pfx, struct acpi_hest_generic_data *gdata,
int sec_no)
{
uuid_le *sec_type = (uuid_le *)gdata->section_type;
__u16 severity;
@ -403,14 +405,16 @@ static void cper_estatus_print_section(
snprintf(newpfx, sizeof(newpfx), "%s%s", pfx, INDENT_SP);
if (!uuid_le_cmp(*sec_type, CPER_SEC_PROC_GENERIC)) {
struct cper_sec_proc_generic *proc_err = (void *)(gdata + 1);
struct cper_sec_proc_generic *proc_err = acpi_hest_get_payload(gdata);
printk("%s""section_type: general processor error\n", newpfx);
if (gdata->error_data_length >= sizeof(*proc_err))
cper_print_proc_generic(newpfx, proc_err);
else
goto err_section_too_small;
} else if (!uuid_le_cmp(*sec_type, CPER_SEC_PLATFORM_MEM)) {
struct cper_sec_mem_err *mem_err = (void *)(gdata + 1);
struct cper_sec_mem_err *mem_err = acpi_hest_get_payload(gdata);
printk("%s""section_type: memory error\n", newpfx);
if (gdata->error_data_length >=
sizeof(struct cper_sec_mem_err_old))
@ -419,7 +423,8 @@ static void cper_estatus_print_section(
else
goto err_section_too_small;
} else if (!uuid_le_cmp(*sec_type, CPER_SEC_PCIE)) {
struct cper_sec_pcie *pcie = (void *)(gdata + 1);
struct cper_sec_pcie *pcie = acpi_hest_get_payload(gdata);
printk("%s""section_type: PCIe error\n", newpfx);
if (gdata->error_data_length >= sizeof(*pcie))
cper_print_pcie(newpfx, pcie, gdata);
@ -438,7 +443,7 @@ void cper_estatus_print(const char *pfx,
const struct acpi_hest_generic_status *estatus)
{
struct acpi_hest_generic_data *gdata;
unsigned int data_len, gedata_len;
unsigned int data_len;
int sec_no = 0;
char newpfx[64];
__u16 severity;
@ -452,11 +457,11 @@ void cper_estatus_print(const char *pfx,
data_len = estatus->data_length;
gdata = (struct acpi_hest_generic_data *)(estatus + 1);
snprintf(newpfx, sizeof(newpfx), "%s%s", pfx, INDENT_SP);
while (data_len >= sizeof(*gdata)) {
gedata_len = gdata->error_data_length;
while (data_len >= acpi_hest_get_size(gdata)) {
cper_estatus_print_section(newpfx, gdata, sec_no);
data_len -= gedata_len + sizeof(*gdata);
gdata = (void *)(gdata + 1) + gedata_len;
data_len -= acpi_hest_get_record_size(gdata);
gdata = acpi_hest_get_next(gdata);
sec_no++;
}
}
@ -486,12 +491,14 @@ int cper_estatus_check(const struct acpi_hest_generic_status *estatus)
return rc;
data_len = estatus->data_length;
gdata = (struct acpi_hest_generic_data *)(estatus + 1);
while (data_len >= sizeof(*gdata)) {
gedata_len = gdata->error_data_length;
if (gedata_len > data_len - sizeof(*gdata))
while (data_len >= acpi_hest_get_size(gdata)) {
gedata_len = acpi_hest_get_error_length(gdata);
if (gedata_len > data_len - acpi_hest_get_size(gdata))
return -EINVAL;
data_len -= gedata_len + sizeof(*gdata);
gdata = (void *)(gdata + 1) + gedata_len;
data_len -= acpi_hest_get_record_size(gdata);
gdata = acpi_hest_get_next(gdata);
}
if (data_len)
return -EINVAL;

36
include/acpi/ghes.h
View File

@ -73,3 +73,39 @@ static inline void ghes_edac_unregister(struct ghes *ghes)
{
}
#endif
static inline int acpi_hest_get_version(struct acpi_hest_generic_data *gdata)
{
return gdata->revision >> 8;
}
static inline void *acpi_hest_get_payload(struct acpi_hest_generic_data *gdata)
{
if (acpi_hest_get_version(gdata) >= 3)
return (void *)(((struct acpi_hest_generic_data_v300 *)(gdata)) + 1);
return gdata + 1;
}
static inline int acpi_hest_get_error_length(struct acpi_hest_generic_data *gdata)
{
return ((struct acpi_hest_generic_data *)(gdata))->error_data_length;
}
static inline int acpi_hest_get_size(struct acpi_hest_generic_data *gdata)
{
if (acpi_hest_get_version(gdata) >= 3)
return sizeof(struct acpi_hest_generic_data_v300);
return sizeof(struct acpi_hest_generic_data);
}
static inline int acpi_hest_get_record_size(struct acpi_hest_generic_data *gdata)
{
return (acpi_hest_get_size(gdata) + acpi_hest_get_error_length(gdata));
}
static inline void *acpi_hest_get_next(struct acpi_hest_generic_data *gdata)
{
return (void *)(gdata) + acpi_hest_get_record_size(gdata);
}