From 714f517745729e060ef716d16026e26e5fce591f Mon Sep 17 00:00:00 2001 From: "sumit.saxena@avagotech.com" Date: Mon, 31 Aug 2015 17:23:51 +0530 Subject: [PATCH] megaraid_sas: Print critical firmware event messages Print firmware events in human-readable form. This will help users track any critical firmware events without special 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. The format of logged events is: ": (//) - " Signed-off-by: Sumit Saxena Signed-off-by: Kashyap Desai Reviewed-by: Martin K. Petersen Signed-off-by: Martin K. Petersen --- drivers/scsi/megaraid/megaraid_sas.h | 10 ++++ drivers/scsi/megaraid/megaraid_sas_base.c | 61 +++++++++++++++++++++++ 2 files changed, 71 insertions(+) diff --git a/drivers/scsi/megaraid/megaraid_sas.h b/drivers/scsi/megaraid/megaraid_sas.h index 5db31c6ca88d..ccda60d1aa57 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 11fb648e9de5..b72dce603549 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 @@ -6602,6 +6662,7 @@ 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: