[PATCH v3 14/42] hpsa: use ioaccel2 path to submit IOs to physical drives in HBA mode.

Don Brace
2015-03-17T20:05:21Z

From: Joe Handzik <joseph.t.handzik@hp.com>

use ioaccel2 path to submit I/O to physical drives in HBA mode

Reviewed-by: Scott Teel <scott.teel@pmcs.com>
Reviewed-by: Kevin Barnett <kevin.barnett@pmcs.com>
Signed-off-by: Joe Handzik <joseph.t.handzik@hp.com>
Signed-off-by: Don Brace <don.brace@pmcs.com>
---
drivers/scsi/hpsa.c | 10 +++++++++-
drivers/scsi/hpsa.h | 1 +
2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
index e9d3d71..76f9042 100644
--- a/drivers/scsi/hpsa.c
+++ b/drivers/scsi/hpsa.c
@@ -1123,6 +1123,11 @@ static void hpsa_scsi_update_entry(struct ctlr_info *h, int hostno,
h->dev[entry]->raid_map = new_entry->raid_map;
h->dev[entry]->ioaccel_handle = new_entry->ioaccel_handle;
}
+ if (new_entry->hba_ioaccel_enabled) {
+ h->dev[entry]->ioaccel_handle = new_entry->ioaccel_handle;
+ wmb(); /* set ioaccel_handle *before* hba_ioaccel_enabled */
+ }
+ h->dev[entry]->hba_ioaccel_enabled = new_entry->hba_ioaccel_enabled;
h->dev[entry]->offload_config = new_entry->offload_config;
h->dev[entry]->offload_to_mirror = new_entry->offload_to_mirror;
h->dev[entry]->queue_depth = new_entry->queue_depth;
@@ -3039,6 +3044,7 @@ static int hpsa_update_device_info(struct ctlr_info *h,
this_device->offload_config = 0;
this_device->offload_enabled = 0;
this_device->offload_to_be_enabled = 0;
+ this_device->hba_ioaccel_enabled = 0;
this_device->volume_offline = 0;
this_device->queue_depth = h->nr_cmds;
}
@@ -3327,6 +3333,8 @@ static void hpsa_get_ioaccel_drive_info(struct ctlr_info *h,
(struct ext_report_lun_entry *) lunaddrbytes;

dev->ioaccel_handle = rle->ioaccel_handle;
+ if (PHYS_IOACCEL(lunaddrbytes) && dev->ioaccel_handle)
+ dev->hba_ioaccel_enabled = 1;
memset(id_phys, 0, sizeof(*id_phys));
rc = hpsa_bmic_id_physical_device(h, lunaddrbytes,
GET_BMIC_DRIVE_NUMBER(lunaddrbytes), id_phys,
@@ -4428,7 +4436,7 @@ static int hpsa_ioaccel_submit(struct ctlr_info *h,
rc = hpsa_scsi_ioaccel_raid_map(h, c);
if (rc < 0) /* scsi_dma_map failed. */
rc = SCSI_MLQUEUE_HOST_BUSY;
- } else if (dev->ioaccel_handle) {
+ } else if (dev->hba_ioaccel_enabled) {
hpsa_cmd_init(h, c->cmdindex, c);
c->cmd_type = CMD_SCSI;
c->scsi_cmd = cmd;
diff --git a/drivers/scsi/hpsa.h b/drivers/scsi/hpsa.h
index df2468c..87a70b5 100644
--- a/drivers/scsi/hpsa.h
+++ b/drivers/scsi/hpsa.h
@@ -55,6 +55,7 @@ struct hpsa_scsi_dev_t {
int offload_config; /* I/O accel RAID offload configured */
int offload_enabled; /* I/O accel RAID offload enabled */
int offload_to_be_enabled;
+ int hba_ioaccel_enabled;
int offload_to_mirror; /* Send next I/O accelerator RAID
* offload request to mirror drive
*/