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scsi: mpi3mr: Expose adapter state to sysfs 

Link: https://lore.kernel.org/r/20220429211641.642010-7-sumit.saxena@broadcom.com
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Sumit Saxena <sumit.saxena@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Sumit Saxena 2022-04-29 17:16:39 -04:00 committed by Martin K. Petersen
parent 43ca110050
commit 986d6bad21
3 changed files with 48 additions and 1 deletions
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2
drivers/scsi/mpi3mr/mpi3mr.h
View File

@ -1056,5 +1056,5 @@ int mpi3mr_pel_get_seqnum_post(struct mpi3mr_ioc *mrioc,
struct mpi3mr_drv_cmd *drv_cmd);
void mpi3mr_app_save_logdata(struct mpi3mr_ioc *mrioc, char *event_data,
u16 event_data_size);
extern const struct attribute_group *mpi3mr_host_groups[];
#endif /*MPI3MR_H_INCLUDED*/

46
drivers/scsi/mpi3mr/mpi3mr_app.c
View File

@ -1215,3 +1215,49 @@ err_setup_queue:
err_device_add:
kfree(mrioc->bsg_dev);
}
/**
* adapter_state_show - SysFS callback for adapter state show
* @dev: class device
* @attr: Device attributes
* @buf: Buffer to copy
*
* Return: snprintf() return after copying adapter state
*/
static ssize_t
adp_state_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct Scsi_Host *shost = class_to_shost(dev);
struct mpi3mr_ioc *mrioc = shost_priv(shost);
enum mpi3mr_iocstate ioc_state;
uint8_t adp_state;
ioc_state = mpi3mr_get_iocstate(mrioc);
if (ioc_state == MRIOC_STATE_UNRECOVERABLE)
adp_state = MPI3MR_BSG_ADPSTATE_UNRECOVERABLE;
else if ((mrioc->reset_in_progress) || (mrioc->stop_bsgs))
adp_state = MPI3MR_BSG_ADPSTATE_IN_RESET;
else if (ioc_state == MRIOC_STATE_FAULT)
adp_state = MPI3MR_BSG_ADPSTATE_FAULT;
else
adp_state = MPI3MR_BSG_ADPSTATE_OPERATIONAL;
return snprintf(buf, PAGE_SIZE, "%u\n", adp_state);
}
static DEVICE_ATTR_RO(adp_state);
static struct attribute *mpi3mr_host_attrs[] = {
&dev_attr_adp_state.attr,
NULL,
};
static const struct attribute_group mpi3mr_host_attr_group = {
.attrs = mpi3mr_host_attrs
};
const struct attribute_group *mpi3mr_host_groups[] = {
&mpi3mr_host_attr_group,
NULL,
};

1
drivers/scsi/mpi3mr/mpi3mr_os.c
View File

@ -4134,6 +4134,7 @@ static struct scsi_host_template mpi3mr_driver_template = {
.max_segment_size = 0xffffffff,
.track_queue_depth = 1,
.cmd_size = sizeof(struct scmd_priv),
.shost_groups = mpi3mr_host_groups,
};
/**