Print firmware event in readable format. This will help user to track any
critical firmware event without any application support.
sample syslogd output -
megaraid_sas 0000:02:00.0: 8619 (491648347s/0x0020/WARN) - Controller temperature threshold exceeded. This may indicate inadequate system cooling. Switching to low performance mode
Format of print is - "<pci_dev_id>: <sequence_number> (<timestamp>/<locale>/<class>) - <description>"
Signed-off-by: Sumit Saxena <sumit.saxena@xxxxxxxxxxxxx>
Signed-off-by: Kashyap Desai <kashyap.desai@xxxxxxxxxxxxx>
---
drivers/scsi/megaraid/megaraid_sas.h | 10 +++++
drivers/scsi/megaraid/megaraid_sas_base.c | 61 +++++++++++++++++++++++++++++
2 files changed, 71 insertions(+), 0 deletions(-)
diff --git a/drivers/scsi/megaraid/megaraid_sas.h b/drivers/scsi/megaraid/megaraid_sas.h
index 5db31c6..ccda60d 100644
--- a/drivers/scsi/megaraid/megaraid_sas.h
+++ b/drivers/scsi/megaraid/megaraid_sas.h
@@ -273,6 +273,16 @@ enum MFI_STAT {
MFI_STAT_INVALID_STATUS = 0xFF
};
+enum mfi_evt_class {
+ MFI_EVT_CLASS_DEBUG = -2,
+ MFI_EVT_CLASS_PROGRESS = -1,
+ MFI_EVT_CLASS_INFO = 0,
+ MFI_EVT_CLASS_WARNING = 1,
+ MFI_EVT_CLASS_CRITICAL = 2,
+ MFI_EVT_CLASS_FATAL = 3,
+ MFI_EVT_CLASS_DEAD = 4
+};
+
/*
* Crash dump related defines
*/
diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c
index de31015..4fb4225 100644
--- a/drivers/scsi/megaraid/megaraid_sas_base.c
+++ b/drivers/scsi/megaraid/megaraid_sas_base.c
@@ -260,6 +260,66 @@ megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
}
+static const char *
+format_timestamp(uint32_t timestamp)
+{
+ static char buffer[32];
+
+ if ((timestamp & 0xff000000) == 0xff000000)
+ snprintf(buffer, sizeof(buffer), "boot + %us", timestamp &
+ 0x00ffffff);
+ else
+ snprintf(buffer, sizeof(buffer), "%us", timestamp);
+ return buffer;
+}
+
+static const char *
+format_class(int8_t class)
+{
+ static char buffer[6];
+
+ switch (class) {
+ case MFI_EVT_CLASS_DEBUG:
+ return "debug";
+ case MFI_EVT_CLASS_PROGRESS:
+ return "progress";
+ case MFI_EVT_CLASS_INFO:
+ return "info";
+ case MFI_EVT_CLASS_WARNING:
+ return "WARN";
+ case MFI_EVT_CLASS_CRITICAL:
+ return "CRIT";
+ case MFI_EVT_CLASS_FATAL:
+ return "FATAL";
+ case MFI_EVT_CLASS_DEAD:
+ return "DEAD";
+ default:
+ snprintf(buffer, sizeof(buffer), "%d", class);
+ return buffer;
+ }
+}
+
+/**
+ * megasas_decode_evt: Decode FW AEN event and print critical event
+ * for information.
+ * @instance: Adapter soft state
+ */
+static void
+megasas_decode_evt(struct megasas_instance *instance)
+{
+ struct megasas_evt_detail *evt_detail = instance->evt_detail;
+ union megasas_evt_class_locale class_locale;
+ class_locale.word = le32_to_cpu(evt_detail->cl.word);
+
+ if (class_locale.members.class >= MFI_EVT_CLASS_CRITICAL)
+ dev_info(&instance->pdev->dev, "%d (%s/0x%04x/%s) - %s\n",
+ le32_to_cpu(evt_detail->seq_num),
+ format_timestamp(le32_to_cpu(evt_detail->time_stamp)),
+ (class_locale.members.locale),
+ format_class(class_locale.members.class),
+ evt_detail->description);
+}
+
/**
* The following functions are defined for xscale
* (deviceid : 1064R, PERC5) controllers
@@ -6610,6 +6670,7 @@ megasas_aen_polling(struct work_struct *work)
instance->ev = NULL;
host = instance->host;
if (instance->evt_detail) {
+ megasas_decode_evt(instance);
switch (le32_to_cpu(instance->evt_detail->code)) {
case MR_EVT_PD_INSERTED:
--
1.7.1
--
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