diff options
| author | Deepak Ukey <deepak.ukey@microchip.com> | 2020-03-16 13:19:05 +0530 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2020-03-17 13:57:18 -0400 |
| commit | dba2cc03b9db85fa356bf3137404542c0996e8c7 (patch) | |
| tree | 6b7555a16904ba3472b367f025db7e1e839f47a5 /drivers/scsi/pm8001/pm8001_ctl.c | |
| parent | b40f28820fbafbcb0e0ec555fc2bca76ac1d9612 (diff) | |
scsi: pm80xx: sysfs attribute for non fatal dump
Added the sysfs attribute for non fatal log so that management utility can
get the non fatal dump from driver. The non-fatal error is an error
condition or abnormal behavior detected by the host, or detected and
reported by the controller to the host.The non-fatal error does not stop
the controller firmware and enables it to still respond to host requests.
A typical example of a non-fatal error is an I/O timeout or an unusual
error notification from the controller. Since the firmware is operational,
the error dump information is pushed to host memory (by firmware) upon
request from the host.
Link: https://lore.kernel.org/r/20200316074906.9119-6-deepak.ukey@microchip.com
Acked-by: Jack Wang <jinpu.wang@cloud.ionos.com>
Signed-off-by: Deepak Ukey <deepak.ukey@microchip.com>
Signed-off-by: Viswas G <Viswas.G@microchip.com>
Signed-off-by: Radha Ramachandran <radha@google.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/pm8001/pm8001_ctl.c')
| -rw-r--r-- | drivers/scsi/pm8001/pm8001_ctl.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/drivers/scsi/pm8001/pm8001_ctl.c b/drivers/scsi/pm8001/pm8001_ctl.c index 7c6be2ec110d..23b8bf27e201 100644 --- a/drivers/scsi/pm8001/pm8001_ctl.c +++ b/drivers/scsi/pm8001/pm8001_ctl.c @@ -554,6 +554,49 @@ static ssize_t pm8001_ctl_fatal_log_show(struct device *cdev, static DEVICE_ATTR(fatal_log, S_IRUGO, pm8001_ctl_fatal_log_show, NULL); +/** + ** non_fatal_log_show - non fatal error logging + ** @cdev:pointer to embedded class device + ** @buf: the buffer returned + ** + ** A sysfs 'read-only' shost attribute. + **/ +static ssize_t non_fatal_log_show(struct device *cdev, + struct device_attribute *attr, char *buf) +{ + u32 count; + + count = pm80xx_get_non_fatal_dump(cdev, attr, buf); + return count; +} +static DEVICE_ATTR_RO(non_fatal_log); + +static ssize_t non_fatal_count_show(struct device *cdev, + struct device_attribute *attr, char *buf) +{ + struct Scsi_Host *shost = class_to_shost(cdev); + struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost); + struct pm8001_hba_info *pm8001_ha = sha->lldd_ha; + + return snprintf(buf, PAGE_SIZE, "%08x", + pm8001_ha->non_fatal_count); +} + +static ssize_t non_fatal_count_store(struct device *cdev, + struct device_attribute *attr, const char *buf, size_t count) +{ + struct Scsi_Host *shost = class_to_shost(cdev); + struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost); + struct pm8001_hba_info *pm8001_ha = sha->lldd_ha; + int val = 0; + + if (kstrtoint(buf, 16, &val) != 0) + return -EINVAL; + + pm8001_ha->non_fatal_count = val; + return strlen(buf); +} +static DEVICE_ATTR_RW(non_fatal_count); /** ** pm8001_ctl_gsm_log_show - gsm dump collection @@ -829,6 +872,8 @@ struct device_attribute *pm8001_host_attrs[] = { &dev_attr_aap_log, &dev_attr_iop_log, &dev_attr_fatal_log, + &dev_attr_non_fatal_log, + &dev_attr_non_fatal_count, &dev_attr_gsm_log, &dev_attr_max_out_io, &dev_attr_max_devices, |