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-rw-r--r--drivers/acpi/apei/Makefile2
-rw-r--r--drivers/acpi/apei/apei-internal.h2
-rw-r--r--drivers/acpi/apei/bert.c150
-rw-r--r--drivers/acpi/apei/einj.c57
-rw-r--r--drivers/acpi/apei/erst.c7
5 files changed, 193 insertions, 25 deletions
diff --git a/drivers/acpi/apei/Makefile b/drivers/acpi/apei/Makefile
index 5d575a955940..e50573de25f1 100644
--- a/drivers/acpi/apei/Makefile
+++ b/drivers/acpi/apei/Makefile
@@ -3,4 +3,4 @@ obj-$(CONFIG_ACPI_APEI_GHES) += ghes.o
obj-$(CONFIG_ACPI_APEI_EINJ) += einj.o
obj-$(CONFIG_ACPI_APEI_ERST_DEBUG) += erst-dbg.o
-apei-y := apei-base.o hest.o erst.o
+apei-y := apei-base.o hest.o erst.o bert.o
diff --git a/drivers/acpi/apei/apei-internal.h b/drivers/acpi/apei/apei-internal.h
index 16129c78b489..6e9f14c0a71b 100644
--- a/drivers/acpi/apei/apei-internal.h
+++ b/drivers/acpi/apei/apei-internal.h
@@ -1,6 +1,6 @@
/*
* apei-internal.h - ACPI Platform Error Interface internal
- * definations.
+ * definitions.
*/
#ifndef APEI_INTERNAL_H
diff --git a/drivers/acpi/apei/bert.c b/drivers/acpi/apei/bert.c
new file mode 100644
index 000000000000..a05b5c0cf181
--- /dev/null
+++ b/drivers/acpi/apei/bert.c
@@ -0,0 +1,150 @@
+/*
+ * APEI Boot Error Record Table (BERT) support
+ *
+ * Copyright 2011 Intel Corp.
+ * Author: Huang Ying <ying.huang@intel.com>
+ *
+ * Under normal circumstances, when a hardware error occurs, the error
+ * handler receives control and processes the error. This gives OSPM a
+ * chance to process the error condition, report it, and optionally attempt
+ * recovery. In some cases, the system is unable to process an error.
+ * For example, system firmware or a management controller may choose to
+ * reset the system or the system might experience an uncontrolled crash
+ * or reset.The boot error source is used to report unhandled errors that
+ * occurred in a previous boot. This mechanism is described in the BERT
+ * table.
+ *
+ * For more information about BERT, please refer to ACPI Specification
+ * version 4.0, section 17.3.1
+ *
+ * This file is licensed under GPLv2.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/acpi.h>
+#include <linux/io.h>
+
+#include "apei-internal.h"
+
+#undef pr_fmt
+#define pr_fmt(fmt) "BERT: " fmt
+
+static int bert_disable;
+
+static void __init bert_print_all(struct acpi_bert_region *region,
+ unsigned int region_len)
+{
+ struct acpi_hest_generic_status *estatus =
+ (struct acpi_hest_generic_status *)region;
+ int remain = region_len;
+ u32 estatus_len;
+
+ if (!estatus->block_status)
+ return;
+
+ while (remain > sizeof(struct acpi_bert_region)) {
+ if (cper_estatus_check(estatus)) {
+ pr_err(FW_BUG "Invalid error record.\n");
+ return;
+ }
+
+ estatus_len = cper_estatus_len(estatus);
+ if (remain < estatus_len) {
+ pr_err(FW_BUG "Truncated status block (length: %u).\n",
+ estatus_len);
+ return;
+ }
+
+ pr_info_once("Error records from previous boot:\n");
+
+ cper_estatus_print(KERN_INFO HW_ERR, estatus);
+
+ /*
+ * Because the boot error source is "one-time polled" type,
+ * clear Block Status of current Generic Error Status Block,
+ * once it's printed.
+ */
+ estatus->block_status = 0;
+
+ estatus = (void *)estatus + estatus_len;
+ /* No more error records. */
+ if (!estatus->block_status)
+ return;
+
+ remain -= estatus_len;
+ }
+}
+
+static int __init setup_bert_disable(char *str)
+{
+ bert_disable = 1;
+
+ return 0;
+}
+__setup("bert_disable", setup_bert_disable);
+
+static int __init bert_check_table(struct acpi_table_bert *bert_tab)
+{
+ if (bert_tab->header.length < sizeof(struct acpi_table_bert) ||
+ bert_tab->region_length < sizeof(struct acpi_bert_region))
+ return -EINVAL;
+
+ return 0;
+}
+
+static int __init bert_init(void)
+{
+ struct acpi_bert_region *boot_error_region;
+ struct acpi_table_bert *bert_tab;
+ unsigned int region_len;
+ acpi_status status;
+ int rc = 0;
+
+ if (acpi_disabled)
+ return 0;
+
+ if (bert_disable) {
+ pr_info("Boot Error Record Table support is disabled.\n");
+ return 0;
+ }
+
+ status = acpi_get_table(ACPI_SIG_BERT, 0, (struct acpi_table_header **)&bert_tab);
+ if (status == AE_NOT_FOUND)
+ return 0;
+
+ if (ACPI_FAILURE(status)) {
+ pr_err("get table failed, %s.\n", acpi_format_exception(status));
+ return -EINVAL;
+ }
+
+ rc = bert_check_table(bert_tab);
+ if (rc) {
+ pr_err(FW_BUG "table invalid.\n");
+ return rc;
+ }
+
+ region_len = bert_tab->region_length;
+ if (!request_mem_region(bert_tab->address, region_len, "APEI BERT")) {
+ pr_err("Can't request iomem region <%016llx-%016llx>.\n",
+ (unsigned long long)bert_tab->address,
+ (unsigned long long)bert_tab->address + region_len - 1);
+ return -EIO;
+ }
+
+ boot_error_region = ioremap_cache(bert_tab->address, region_len);
+ if (boot_error_region) {
+ bert_print_all(boot_error_region, region_len);
+ iounmap(boot_error_region);
+ } else {
+ rc = -ENOMEM;
+ }
+
+ release_mem_region(bert_tab->address, region_len);
+
+ return rc;
+}
+
+late_initcall(bert_init);
diff --git a/drivers/acpi/apei/einj.c b/drivers/acpi/apei/einj.c
index 559c1173de1c..eebb7e39c49c 100644
--- a/drivers/acpi/apei/einj.c
+++ b/drivers/acpi/apei/einj.c
@@ -33,7 +33,8 @@
#include "apei-internal.h"
-#define EINJ_PFX "EINJ: "
+#undef pr_fmt
+#define pr_fmt(fmt) "EINJ: " fmt
#define SPIN_UNIT 100 /* 100ns */
/* Firmware should respond within 1 milliseconds */
@@ -179,8 +180,7 @@ static int einj_get_available_error_type(u32 *type)
static int einj_timedout(u64 *t)
{
if ((s64)*t < SPIN_UNIT) {
- pr_warning(FW_WARN EINJ_PFX
- "Firmware does not respond in time\n");
+ pr_warning(FW_WARN "Firmware does not respond in time\n");
return 1;
}
*t -= SPIN_UNIT;
@@ -307,8 +307,7 @@ static int __einj_error_trigger(u64 trigger_paddr, u32 type,
r = request_mem_region(trigger_paddr, sizeof(*trigger_tab),
"APEI EINJ Trigger Table");
if (!r) {
- pr_err(EINJ_PFX
- "Can not request [mem %#010llx-%#010llx] for Trigger table\n",
+ pr_err("Can not request [mem %#010llx-%#010llx] for Trigger table\n",
(unsigned long long)trigger_paddr,
(unsigned long long)trigger_paddr +
sizeof(*trigger_tab) - 1);
@@ -316,13 +315,12 @@ static int __einj_error_trigger(u64 trigger_paddr, u32 type,
}
trigger_tab = ioremap_cache(trigger_paddr, sizeof(*trigger_tab));
if (!trigger_tab) {
- pr_err(EINJ_PFX "Failed to map trigger table!\n");
+ pr_err("Failed to map trigger table!\n");
goto out_rel_header;
}
rc = einj_check_trigger_header(trigger_tab);
if (rc) {
- pr_warning(FW_BUG EINJ_PFX
- "The trigger error action table is invalid\n");
+ pr_warning(FW_BUG "Invalid trigger error action table.\n");
goto out_rel_header;
}
@@ -336,8 +334,7 @@ static int __einj_error_trigger(u64 trigger_paddr, u32 type,
table_size - sizeof(*trigger_tab),
"APEI EINJ Trigger Table");
if (!r) {
- pr_err(EINJ_PFX
-"Can not request [mem %#010llx-%#010llx] for Trigger Table Entry\n",
+ pr_err("Can not request [mem %#010llx-%#010llx] for Trigger Table Entry\n",
(unsigned long long)trigger_paddr + sizeof(*trigger_tab),
(unsigned long long)trigger_paddr + table_size - 1);
goto out_rel_header;
@@ -345,7 +342,7 @@ static int __einj_error_trigger(u64 trigger_paddr, u32 type,
iounmap(trigger_tab);
trigger_tab = ioremap_cache(trigger_paddr, table_size);
if (!trigger_tab) {
- pr_err(EINJ_PFX "Failed to map trigger table!\n");
+ pr_err("Failed to map trigger table!\n");
goto out_rel_entry;
}
trigger_entry = (struct acpi_whea_header *)
@@ -695,34 +692,42 @@ static int __init einj_init(void)
struct dentry *fentry;
struct apei_exec_context ctx;
- if (acpi_disabled)
+ if (acpi_disabled) {
+ pr_warn("ACPI disabled.\n");
return -ENODEV;
+ }
status = acpi_get_table(ACPI_SIG_EINJ, 0,
(struct acpi_table_header **)&einj_tab);
- if (status == AE_NOT_FOUND)
+ if (status == AE_NOT_FOUND) {
+ pr_warn("EINJ table not found.\n");
return -ENODEV;
+ }
else if (ACPI_FAILURE(status)) {
- const char *msg = acpi_format_exception(status);
- pr_err(EINJ_PFX "Failed to get table, %s\n", msg);
+ pr_err("Failed to get EINJ table: %s\n",
+ acpi_format_exception(status));
return -EINVAL;
}
rc = einj_check_table(einj_tab);
if (rc) {
- pr_warning(FW_BUG EINJ_PFX "EINJ table is invalid\n");
+ pr_warn(FW_BUG "Invalid EINJ table.n");
return -EINVAL;
}
rc = -ENOMEM;
einj_debug_dir = debugfs_create_dir("einj", apei_get_debugfs_dir());
- if (!einj_debug_dir)
+ if (!einj_debug_dir) {
+ pr_err("Error creating debugfs node.\n");
goto err_cleanup;
+ }
+
fentry = debugfs_create_file("available_error_type", S_IRUSR,
einj_debug_dir, NULL,
&available_error_type_fops);
if (!fentry)
goto err_cleanup;
+
fentry = debugfs_create_file("error_type", S_IRUSR | S_IWUSR,
einj_debug_dir, NULL, &error_type_fops);
if (!fentry)
@@ -735,14 +740,22 @@ static int __init einj_init(void)
apei_resources_init(&einj_resources);
einj_exec_ctx_init(&ctx);
rc = apei_exec_collect_resources(&ctx, &einj_resources);
- if (rc)
+ if (rc) {
+ pr_err("Error collecting EINJ resources.\n");
goto err_fini;
+ }
+
rc = apei_resources_request(&einj_resources, "APEI EINJ");
- if (rc)
+ if (rc) {
+ pr_err("Error requesting memory/port resources.\n");
goto err_fini;
+ }
+
rc = apei_exec_pre_map_gars(&ctx);
- if (rc)
+ if (rc) {
+ pr_err("Error pre-mapping GARs.\n");
goto err_release;
+ }
rc = -ENOMEM;
einj_param = einj_get_parameter_address();
@@ -787,7 +800,7 @@ static int __init einj_init(void)
goto err_unmap;
}
- pr_info(EINJ_PFX "Error INJection is initialized.\n");
+ pr_info("Error INJection is initialized.\n");
return 0;
@@ -798,6 +811,7 @@ err_unmap:
sizeof(struct einj_parameter);
acpi_os_unmap_iomem(einj_param, size);
+ pr_err("Error creating param extension debugfs nodes.\n");
}
apei_exec_post_unmap_gars(&ctx);
err_release:
@@ -805,6 +819,7 @@ err_release:
err_fini:
apei_resources_fini(&einj_resources);
err_cleanup:
+ pr_err("Error creating primary debugfs nodes.\n");
debugfs_remove_recursive(einj_debug_dir);
return rc;
diff --git a/drivers/acpi/apei/erst.c b/drivers/acpi/apei/erst.c
index 006c3894c6ea..f096ab3cb54d 100644
--- a/drivers/acpi/apei/erst.c
+++ b/drivers/acpi/apei/erst.c
@@ -927,7 +927,8 @@ static int erst_open_pstore(struct pstore_info *psi);
static int erst_close_pstore(struct pstore_info *psi);
static ssize_t erst_reader(u64 *id, enum pstore_type_id *type, int *count,
struct timespec *time, char **buf,
- bool *compressed, struct pstore_info *psi);
+ bool *compressed, ssize_t *ecc_notice_size,
+ struct pstore_info *psi);
static int erst_writer(enum pstore_type_id type, enum kmsg_dump_reason reason,
u64 *id, unsigned int part, int count, bool compressed,
size_t size, struct pstore_info *psi);
@@ -987,7 +988,8 @@ static int erst_close_pstore(struct pstore_info *psi)
static ssize_t erst_reader(u64 *id, enum pstore_type_id *type, int *count,
struct timespec *time, char **buf,
- bool *compressed, struct pstore_info *psi)
+ bool *compressed, ssize_t *ecc_notice_size,
+ struct pstore_info *psi)
{
int rc;
ssize_t len = 0;
@@ -1033,6 +1035,7 @@ skip:
memcpy(*buf, rcd->data, len - sizeof(*rcd));
*id = record_id;
*compressed = false;
+ *ecc_notice_size = 0;
if (uuid_le_cmp(rcd->sec_hdr.section_type,
CPER_SECTION_TYPE_DMESG_Z) == 0) {
*type = PSTORE_TYPE_DMESG;
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-07 08:51:56 +0300