From 2040a857e436e5e942d3d2d893891d088dba87f1 Mon Sep 17 00:00:00 2001 From: Deepak Ukey Date: Mon, 24 Jun 2019 13:52:27 +0530 Subject: [PATCH] scsi: pm80xx: Event log size through sysfs Added support to read event log size from MPI configuration table and export through sysfs. Signed-off-by: Deepak Ukey Signed-off-by: Viswas G Reviewed-by: Jack Wang Signed-off-by: Martin K. Petersen --- drivers/scsi/pm8001/pm8001_ctl.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/drivers/scsi/pm8001/pm8001_ctl.c b/drivers/scsi/pm8001/pm8001_ctl.c index d193961ea82f..c7e0a42c3d0d 100644 --- a/drivers/scsi/pm8001/pm8001_ctl.c +++ b/drivers/scsi/pm8001/pm8001_ctl.c @@ -461,6 +461,24 @@ static ssize_t pm8001_ctl_bios_version_show(struct device *cdev, return str - buf; } static DEVICE_ATTR(bios_version, S_IRUGO, pm8001_ctl_bios_version_show, NULL); +/** + * event_log_size_show - event log size + * @cdev: pointer to embedded class device + * @buf: the buffer returned + * + * A sysfs read shost attribute. + */ +static ssize_t event_log_size_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, "%d\n", + pm8001_ha->main_cfg_tbl.pm80xx_tbl.event_log_size); +} +static DEVICE_ATTR_RO(event_log_size); /** * pm8001_ctl_aap_log_show - IOP event log * @cdev: pointer to embedded class device @@ -796,6 +814,7 @@ struct device_attribute *pm8001_host_attrs[] = { &dev_attr_max_sg_list, &dev_attr_sas_spec_support, &dev_attr_logging_level, + &dev_attr_event_log_size, &dev_attr_host_sas_address, &dev_attr_bios_version, &dev_attr_ib_log,