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scsi: ibmvfc: Add vhost fields and defaults for MQ enablement

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Introduce several new vhost fields for managing MQ state of the adapter as
well as initial defaults for MQ enablement.

Link: https://lore.kernel.org/r/20210114203148.246656-2-tyreld@linux.ibm.com
Reviewed-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: Tyrel Datwyler <tyreld@linux.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Tyrel Datwyler 2021-01-14 14:31:28 -06:00 committed by Martin K. Petersen
parent 9cd20d3f47
commit 6ae208e5d2
2 changed files with 17 additions and 0 deletions
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8
drivers/scsi/ibmvscsi/ibmvfc.c
View File

@ -3302,6 +3302,7 @@ static struct scsi_host_template driver_template = {
.max_sectors = IBMVFC_MAX_SECTORS,
.shost_attrs = ibmvfc_attrs,
.track_queue_depth = 1,
.host_tagset = 1,
};
/**
@ -5290,6 +5291,7 @@ static int ibmvfc_probe(struct vio_dev *vdev, const struct vio_device_id *id)
shost->max_sectors = IBMVFC_MAX_SECTORS;
shost->max_cmd_len = IBMVFC_MAX_CDB_LEN;
shost->unique_id = shost->host_no;
shost->nr_hw_queues = IBMVFC_MQ ? IBMVFC_SCSI_HW_QUEUES : 1;
vhost = shost_priv(shost);
INIT_LIST_HEAD(&vhost->targets);
@ -5300,6 +5302,12 @@ static int ibmvfc_probe(struct vio_dev *vdev, const struct vio_device_id *id)
vhost->partition_number = -1;
vhost->log_level = log_level;
vhost->task_set = 1;
vhost->mq_enabled = IBMVFC_MQ;
vhost->client_scsi_channels = IBMVFC_SCSI_CHANNELS;
vhost->using_channels = 0;
vhost->do_enquiry = 1;
strcpy(vhost->partition_name, "UNKNOWN");
init_waitqueue_head(&vhost->work_wait_q);
init_waitqueue_head(&vhost->init_wait_q);

9
drivers/scsi/ibmvscsi/ibmvfc.h
View File

@ -41,6 +41,11 @@
#define IBMVFC_DEFAULT_LOG_LEVEL 2
#define IBMVFC_MAX_CDB_LEN 16
#define IBMVFC_CLS3_ERROR 0
#define IBMVFC_MQ 0
#define IBMVFC_SCSI_CHANNELS 0
#define IBMVFC_SCSI_HW_QUEUES 1
#define IBMVFC_MIG_NO_SUB_TO_CRQ 0
#define IBMVFC_MIG_NO_N_TO_M 0
/*
* Ensure we have resources for ERP and initialization:
@ -840,6 +845,10 @@ struct ibmvfc_host {
int delay_init;
int scan_complete;
int logged_in;
int mq_enabled;
int using_channels;
int do_enquiry;
int client_scsi_channels;
int aborting_passthru;
int events_to_log;
#define IBMVFC_AE_LINKUP 0x0001