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scsi: mpi3mr: Add change queue depth support 

Link: https://lore.kernel.org/r/20210520152545.2710479-15-kashyap.desai@broadcom.com
Cc: sathya.prakash@broadcom.com
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Kashyap Desai 2021-05-20 20:55:35 +05:30 committed by Martin K. Petersen
parent e844adb1fb
commit 0ea177343f
2 changed files with 33 additions and 0 deletions
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3
drivers/scsi/mpi3mr/mpi3mr.h
View File

@ -146,6 +146,9 @@ extern struct list_head mrioc_list;
/* Command retry count definitions */
#define MPI3MR_DEV_RMHS_RETRY_COUNT 3
/* Default target device queue depth */
#define MPI3MR_DEFAULT_SDEV_QD 32
/* SGE Flag definition */
#define MPI3MR_SGEFLAGS_SYSTEM_SIMPLE_END_OF_LIST \
(MPI3_SGE_FLAGS_ELEMENT_TYPE_SIMPLE | MPI3_SGE_FLAGS_DLAS_SYSTEM | \

30
drivers/scsi/mpi3mr/mpi3mr_os.c
View File

@ -643,6 +643,33 @@ out:
return retval;
}
/**
* mpi3mr_change_queue_depth- Change QD callback handler
* @sdev: SCSI device reference
* @q_depth: Queue depth
*
* Validate and limit QD and call scsi_change_queue_depth.
*
* Return: return value of scsi_change_queue_depth
*/
static int mpi3mr_change_queue_depth(struct scsi_device *sdev,
int q_depth)
{
struct scsi_target *starget = scsi_target(sdev);
struct Scsi_Host *shost = dev_to_shost(&starget->dev);
int retval = 0;
if (!sdev->tagged_supported)
q_depth = 1;
if (q_depth > shost->can_queue)
q_depth = shost->can_queue;
else if (!q_depth)
q_depth = MPI3MR_DEFAULT_SDEV_QD;
retval = scsi_change_queue_depth(sdev, q_depth);
return retval;
}
/**
* mpi3mr_update_sdev - Update SCSI device information
* @sdev: SCSI device reference
@ -663,6 +690,7 @@ mpi3mr_update_sdev(struct scsi_device *sdev, void *data)
if (!tgtdev)
return;
mpi3mr_change_queue_depth(sdev, tgtdev->q_depth);
switch (tgtdev->dev_type) {
case MPI3_DEVICE_DEVFORM_PCIE:
/*The block layer hw sector size = 512*/
@ -2623,6 +2651,7 @@ static int mpi3mr_slave_configure(struct scsi_device *sdev)
if (!tgt_dev)
return -ENXIO;
mpi3mr_change_queue_depth(sdev, tgt_dev->q_depth);
switch (tgt_dev->dev_type) {
case MPI3_DEVICE_DEVFORM_PCIE:
/*The block layer hw sector size = 512*/
@ -2876,6 +2905,7 @@ static struct scsi_host_template mpi3mr_driver_template = {
.slave_destroy = mpi3mr_slave_destroy,
.scan_finished = mpi3mr_scan_finished,
.scan_start = mpi3mr_scan_start,
.change_queue_depth = mpi3mr_change_queue_depth,
.eh_device_reset_handler = mpi3mr_eh_dev_reset,
.eh_target_reset_handler = mpi3mr_eh_target_reset,
.eh_host_reset_handler = mpi3mr_eh_host_reset,