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authorTyler Baicar <tbaicar@codeaurora.org>2017-06-21 21:17:05 +0300
committerWill Deacon <will.deacon@arm.com>2017-06-22 17:43:47 +0300
commitbbcc2e7b642ed241651fee50ac6ed59643cb1736 (patch)
tree695cd84d0db3136d5a6fb397626712d7992d8fa8 /drivers/firmware
parent42aa560446622da6c33dce54fc8f4cd81516e906 (diff)
downloadlinux-bbcc2e7b642ed241651fee50ac6ed59643cb1736.tar.xz
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>
Diffstat (limited to 'drivers/firmware')
-rw-r--r--drivers/firmware/efi/cper.c37
1 files changed, 22 insertions, 15 deletions
diff --git a/drivers/firmware/efi/cper.c b/drivers/firmware/efi/cper.c
index d42537425438..902475704311 100644
--- a/drivers/firmware/efi/cper.c
+++ b/drivers/firmware/efi/cper.c
@@ -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;