[SCSI] zfcp: Move qdio related data out of zfcp_adapter

The zfcp_adapter structure was growing over time to a size of almost
one memory page. To reduce the size of the data structure and to
seperate different layers, put all qdio related data in the new
zfcp_qdio data structure.

Signed-off-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

9 files changed, 343 insertions, 296 deletions

diff --git a/drivers/s390/scsi/zfcp_aux.c b/drivers/s390/scsi/zfcp_aux.c
index f785cbc7520..ed7211ef04e 100644
--- a/drivers/s390/scsi/zfcp_aux.c
+++ b/drivers/s390/scsi/zfcp_aux.c
@@ -428,7 +428,7 @@ static void zfcp_free_low_mem_buffers(struct zfcp_adapter *adapter)
 int zfcp_status_read_refill(struct zfcp_adapter *adapter)
 {
 	while (atomic_read(&adapter->stat_miss) > 0)
-		if (zfcp_fsf_status_read(adapter)) {
+		if (zfcp_fsf_status_read(adapter->qdio)) {
 			if (atomic_read(&adapter->stat_miss) >= 16) {
 				zfcp_erp_adapter_reopen(adapter, 0, "axsref1",
 							NULL);
@@ -507,11 +507,16 @@ int zfcp_adapter_enqueue(struct ccw_device *ccw_device)
 		return -ENOMEM;
 	}
 
+	adapter->qdio = kzalloc(sizeof(struct zfcp_qdio), GFP_KERNEL);
+	if (!adapter->qdio)
+		goto qdio_mem_failed;
+
+	adapter->qdio->adapter = adapter;
 	ccw_device->handler = NULL;
 	adapter->ccw_device = ccw_device;
 	atomic_set(&adapter->refcount, 0);
 
-	if (zfcp_qdio_allocate(adapter))
+	if (zfcp_qdio_allocate(adapter->qdio, ccw_device))
 		goto qdio_allocate_failed;
 
 	if (zfcp_allocate_low_mem_buffers(adapter))
@@ -536,8 +541,8 @@ int zfcp_adapter_enqueue(struct ccw_device *ccw_device)
 
 	spin_lock_init(&adapter->req_list_lock);
 
-	spin_lock_init(&adapter->req_q_lock);
-	spin_lock_init(&adapter->qdio_stat_lock);
+	spin_lock_init(&adapter->qdio->req_q_lock);
+	spin_lock_init(&adapter->qdio->stat_lock);
 
 	rwlock_init(&adapter->erp_lock);
 	rwlock_init(&adapter->abort_lock);
@@ -574,7 +579,9 @@ debug_register_failed:
 failed_low_mem_buffers:
 	zfcp_free_low_mem_buffers(adapter);
 qdio_allocate_failed:
-	zfcp_qdio_free(adapter);
+	zfcp_qdio_free(adapter->qdio);
+	kfree(adapter->qdio);
+qdio_mem_failed:
 	kfree(adapter);
 	return -ENOMEM;
 }
@@ -605,12 +612,13 @@ void zfcp_adapter_dequeue(struct zfcp_adapter *adapter)
 
 	zfcp_destroy_adapter_work_queue(adapter);
 	zfcp_adapter_debug_unregister(adapter);
-	zfcp_qdio_free(adapter);
+	zfcp_qdio_free(adapter->qdio);
 	zfcp_free_low_mem_buffers(adapter);
 	kfree(adapter->req_list);
 	kfree(adapter->fc_stats);
 	kfree(adapter->stats_reset_data);
 	kfree(adapter->gs);
+	kfree(adapter->qdio);
 	kfree(adapter);
 }
 
diff --git a/drivers/s390/scsi/zfcp_dbf.c b/drivers/s390/scsi/zfcp_dbf.c
index fc7f3d66fe3..3179b08bda6 100644
--- a/drivers/s390/scsi/zfcp_dbf.c
+++ b/drivers/s390/scsi/zfcp_dbf.c
@@ -274,16 +274,16 @@ void _zfcp_hba_dbf_event_fsf_unsol(const char *tag, int level,
 
 /**
  * zfcp_hba_dbf_event_qdio - trace event for QDIO related failure
- * @adapter: adapter affected by this QDIO related event
+ * @qdio: qdio structure affected by this QDIO related event
  * @qdio_error: as passed by qdio module
  * @sbal_index: first buffer with error condition, as passed by qdio module
  * @sbal_count: number of buffers affected, as passed by qdio module
  */
-void zfcp_hba_dbf_event_qdio(struct zfcp_adapter *adapter,
+void zfcp_hba_dbf_event_qdio(struct zfcp_qdio *qdio,
 			     unsigned int qdio_error, int sbal_index,
 			     int sbal_count)
 {
-	struct zfcp_dbf *dbf = adapter->dbf;
+	struct zfcp_dbf *dbf = qdio->adapter->dbf;
 	struct zfcp_hba_dbf_record *r = &dbf->hba_dbf_buf;
 	unsigned long flags;
 
diff --git a/drivers/s390/scsi/zfcp_def.h b/drivers/s390/scsi/zfcp_def.h
index a04bdfd4d2f..bac5c497eab 100644
--- a/drivers/s390/scsi/zfcp_def.h
+++ b/drivers/s390/scsi/zfcp_def.h
@@ -428,6 +428,29 @@ struct zfcp_latencies {
 	spinlock_t lock;
 };
 
+/** struct zfcp_qdio - basic QDIO data structure
+ * @resp_q: response queue
+ * @req_q: request queue
+ * @stat_lock: lock to protect req_q_util and req_q_time
+ * @req_q_lock; lock to serialize access to request queue
+ * @req_q_time: time of last fill level change
+ * @req_q_util: used for accounting
+ * @req_q_full: queue full incidents
+ * @req_q_wq: used to wait for SBAL availability
+ * @adapter: adapter used in conjunction with this QDIO structure
+ */
+struct zfcp_qdio {
+	struct zfcp_qdio_queue	resp_q;
+	struct zfcp_qdio_queue	req_q;
+	spinlock_t		stat_lock;
+	spinlock_t		req_q_lock;
+	ktime_t			req_q_time;
+	u64			req_q_util;
+	atomic_t		req_q_full;
+	wait_queue_head_t	req_q_wq;
+	struct zfcp_adapter	*adapter;
+};
+
 struct zfcp_adapter {
 	atomic_t                refcount;          /* reference count */
 	wait_queue_head_t	remove_wq;         /* can be used to wait for
@@ -436,6 +459,7 @@ struct zfcp_adapter {
 	u64			peer_wwpn;	   /* P2P peer WWPN */
 	u32			peer_d_id;	   /* P2P peer D_ID */
 	struct ccw_device       *ccw_device;	   /* S/390 ccw device */
+	struct zfcp_qdio	*qdio;
 	u32			hydra_version;	   /* Hydra version */
 	u32			fsf_lic_version;
 	u32			adapter_features;  /* FCP channel features */
@@ -447,15 +471,7 @@ struct zfcp_adapter {
 	unsigned long		req_no;		   /* unique FSF req number */
 	struct list_head	*req_list;	   /* list of pending reqs */
 	spinlock_t		req_list_lock;	   /* request list lock */
-	struct zfcp_qdio_queue	req_q;		   /* request queue */
-	spinlock_t		req_q_lock;	   /* for operations on queue */
-	ktime_t			req_q_time; /* time of last fill level change */
-	u64			req_q_util; /* for accounting */
-	spinlock_t		qdio_stat_lock;
 	u32			fsf_req_seq_no;	   /* FSF cmnd seq number */
-	wait_queue_head_t	request_wq;	   /* can be used to wait for
-						      more avaliable SBALs */
-	struct zfcp_qdio_queue	resp_q;	   /* response queue */
 	rwlock_t		abort_lock;        /* Protects against SCSI
 						      stack abort/command
 						      completion races */
@@ -478,13 +494,11 @@ struct zfcp_adapter {
 	struct zfcp_wka_ports	*gs;		   /* generic services */
 	struct zfcp_dbf		*dbf;		   /* debug traces */
 	struct zfcp_adapter_mempool	pool;      /* Adapter memory pools */
-	struct qdio_initialize  qdio_init_data;    /* for qdio_establish */
 	struct fc_host_statistics *fc_stats;
 	struct fsf_qtcb_bottom_port *stats_reset_data;
 	unsigned long		stats_reset;
 	struct work_struct	scan_work;
 	struct service_level	service_level;
-	atomic_t		qdio_outb_full;	   /* queue full incidents */
 	struct workqueue_struct	*work_queue;
 };
 
diff --git a/drivers/s390/scsi/zfcp_erp.c b/drivers/s390/scsi/zfcp_erp.c
index 50e5fbe2252..feda1db56b2 100644
--- a/drivers/s390/scsi/zfcp_erp.c
+++ b/drivers/s390/scsi/zfcp_erp.c
@@ -603,9 +603,11 @@ static void zfcp_erp_wakeup(struct zfcp_adapter *adapter)
 
 static int zfcp_erp_adapter_strategy_open_qdio(struct zfcp_erp_action *act)
 {
-	if (zfcp_qdio_open(act->adapter))
+	struct zfcp_qdio *qdio = act->adapter->qdio;
+
+	if (zfcp_qdio_open(qdio))
 		return ZFCP_ERP_FAILED;
-	init_waitqueue_head(&act->adapter->request_wq);
+	init_waitqueue_head(&qdio->req_q_wq);
 	atomic_set_mask(ZFCP_STATUS_ADAPTER_QDIOUP, &act->adapter->status);
 	return ZFCP_ERP_SUCCEEDED;
 }
@@ -710,7 +712,7 @@ static void zfcp_erp_adapter_strategy_close(struct zfcp_erp_action *act)
 	struct zfcp_adapter *adapter = act->adapter;
 
 	/* close queues to ensure that buffers are not accessed by adapter */
-	zfcp_qdio_close(adapter);
+	zfcp_qdio_close(adapter->qdio);
 	zfcp_fsf_req_dismiss_all(adapter);
 	adapter->fsf_req_seq_no = 0;
 	zfcp_fc_wka_ports_force_offline(adapter->gs);
diff --git a/drivers/s390/scsi/zfcp_ext.h b/drivers/s390/scsi/zfcp_ext.h
index d11c0f44dad..e97947d2f2e 100644
--- a/drivers/s390/scsi/zfcp_ext.h
+++ b/drivers/s390/scsi/zfcp_ext.h
@@ -51,7 +51,7 @@ extern void _zfcp_hba_dbf_event_fsf_response(const char *, int level,
 extern void _zfcp_hba_dbf_event_fsf_unsol(const char *, int level,
 					  struct zfcp_adapter *,
 					  struct fsf_status_read_buffer *);
-extern void zfcp_hba_dbf_event_qdio(struct zfcp_adapter *, unsigned int, int,
+extern void zfcp_hba_dbf_event_qdio(struct zfcp_qdio *, unsigned int, int,
 				    int);
 extern void zfcp_hba_dbf_event_berr(struct zfcp_adapter *,
 				    struct zfcp_fsf_req *);
@@ -118,15 +118,15 @@ extern int zfcp_fsf_close_physical_port(struct zfcp_erp_action *);
 extern int zfcp_fsf_open_unit(struct zfcp_erp_action *);
 extern int zfcp_fsf_close_unit(struct zfcp_erp_action *);
 extern int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *);
-extern int zfcp_fsf_exchange_config_data_sync(struct zfcp_adapter *,
+extern int zfcp_fsf_exchange_config_data_sync(struct zfcp_qdio *,
 					      struct fsf_qtcb_bottom_config *);
 extern int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *);
-extern int zfcp_fsf_exchange_port_data_sync(struct zfcp_adapter *,
+extern int zfcp_fsf_exchange_port_data_sync(struct zfcp_qdio *,
 					    struct fsf_qtcb_bottom_port *);
 extern struct zfcp_fsf_req *zfcp_fsf_control_file(struct zfcp_adapter *,
 						  struct zfcp_fsf_cfdc *);
 extern void zfcp_fsf_req_dismiss_all(struct zfcp_adapter *);
-extern int zfcp_fsf_status_read(struct zfcp_adapter *);
+extern int zfcp_fsf_status_read(struct zfcp_qdio *);
 extern int zfcp_status_read_refill(struct zfcp_adapter *adapter);
 extern int zfcp_fsf_send_ct(struct zfcp_send_ct *, mempool_t *,
 			    struct zfcp_erp_action *);
@@ -137,21 +137,21 @@ extern void zfcp_fsf_req_free(struct zfcp_fsf_req *);
 extern struct zfcp_fsf_req *zfcp_fsf_send_fcp_ctm(struct zfcp_unit *, u8);
 extern struct zfcp_fsf_req *zfcp_fsf_abort_fcp_command(unsigned long,
 						       struct zfcp_unit *);
-extern void zfcp_fsf_reqid_check(struct zfcp_adapter *, int);
+extern void zfcp_fsf_reqid_check(struct zfcp_qdio *, int);
 
 /* zfcp_qdio.c */
-extern int zfcp_qdio_allocate(struct zfcp_adapter *);
-extern void zfcp_qdio_free(struct zfcp_adapter *);
-extern int zfcp_qdio_send(struct zfcp_adapter *, struct zfcp_queue_req *);
+extern int zfcp_qdio_allocate(struct zfcp_qdio *, struct ccw_device *);
+extern void zfcp_qdio_free(struct zfcp_qdio *);
+extern int zfcp_qdio_send(struct zfcp_qdio *, struct zfcp_queue_req *);
 extern struct qdio_buffer_element
-	*zfcp_qdio_sbale_req(struct zfcp_adapter *, struct zfcp_queue_req *);
+	*zfcp_qdio_sbale_req(struct zfcp_qdio *, struct zfcp_queue_req *);
 extern struct qdio_buffer_element
-	*zfcp_qdio_sbale_curr(struct zfcp_adapter *, struct zfcp_queue_req *);
-extern int zfcp_qdio_sbals_from_sg(struct zfcp_adapter *,
+	*zfcp_qdio_sbale_curr(struct zfcp_qdio *, struct zfcp_queue_req *);
+extern int zfcp_qdio_sbals_from_sg(struct zfcp_qdio *,
 				   struct zfcp_queue_req *, unsigned long,
 				   struct scatterlist *, int);
-extern int zfcp_qdio_open(struct zfcp_adapter *);
-extern void zfcp_qdio_close(struct zfcp_adapter *);
+extern int zfcp_qdio_open(struct zfcp_qdio *);
+extern void zfcp_qdio_close(struct zfcp_qdio *);
 
 /* zfcp_scsi.c */
 extern struct zfcp_data zfcp_data;
diff --git a/drivers/s390/scsi/zfcp_fsf.c b/drivers/s390/scsi/zfcp_fsf.c
index e88b7804780..b9a16e4b48b 100644
--- a/drivers/s390/scsi/zfcp_fsf.c
+++ b/drivers/s390/scsi/zfcp_fsf.c
@@ -637,33 +637,34 @@ static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *req)
 	}
 }
 
-static int zfcp_fsf_sbal_check(struct zfcp_adapter *adapter)
+static int zfcp_fsf_sbal_check(struct zfcp_qdio *qdio)
 {
-	struct zfcp_qdio_queue *req_q = &adapter->req_q;
+	struct zfcp_qdio_queue *req_q = &qdio->req_q;
 
-	spin_lock_bh(&adapter->req_q_lock);
+	spin_lock_bh(&qdio->req_q_lock);
 	if (atomic_read(&req_q->count))
 		return 1;
-	spin_unlock_bh(&adapter->req_q_lock);
+	spin_unlock_bh(&qdio->req_q_lock);
 	return 0;
 }
 
-static int zfcp_fsf_req_sbal_get(struct zfcp_adapter *adapter)
+static int zfcp_fsf_req_sbal_get(struct zfcp_qdio *qdio)
 {
+	struct zfcp_adapter *adapter = qdio->adapter;
 	long ret;
 
-	spin_unlock_bh(&adapter->req_q_lock);
-	ret = wait_event_interruptible_timeout(adapter->request_wq,
-			       zfcp_fsf_sbal_check(adapter), 5 * HZ);
+	spin_unlock_bh(&qdio->req_q_lock);
+	ret = wait_event_interruptible_timeout(qdio->req_q_wq,
+			       zfcp_fsf_sbal_check(qdio), 5 * HZ);
 	if (ret > 0)
 		return 0;
 	if (!ret) {
-		atomic_inc(&adapter->qdio_outb_full);
+		atomic_inc(&qdio->req_q_full);
 		/* assume hanging outbound queue, try queue recovery */
 		zfcp_erp_adapter_reopen(adapter, 0, "fsrsg_1", NULL);
 	}
 
-	spin_lock_bh(&adapter->req_q_lock);
+	spin_lock_bh(&qdio->req_q_lock);
 	return -EIO;
 }
 
@@ -700,11 +701,12 @@ static struct fsf_qtcb *zfcp_qtcb_alloc(mempool_t *pool)
 	return qtcb;
 }
 
-static struct zfcp_fsf_req *zfcp_fsf_req_create(struct zfcp_adapter *adapter,
+static struct zfcp_fsf_req *zfcp_fsf_req_create(struct zfcp_qdio *qdio,
 						u32 fsf_cmd, mempool_t *pool)
 {
 	struct qdio_buffer_element *sbale;
-	struct zfcp_qdio_queue *req_q = &adapter->req_q;
+	struct zfcp_qdio_queue *req_q = &qdio->req_q;
+	struct zfcp_adapter *adapter = qdio->adapter;
 	struct zfcp_fsf_req *req = zfcp_fsf_alloc(pool);
 
 	if (unlikely(!req))
@@ -725,7 +727,7 @@ static struct zfcp_fsf_req *zfcp_fsf_req_create(struct zfcp_adapter *adapter,
 	req->queue_req.sbal_last = req_q->first;
 	req->queue_req.sbale_curr = 1;
 
-	sbale = zfcp_qdio_sbale_req(adapter, &req->queue_req);
+	sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
 	sbale[0].addr = (void *) req->req_id;
 	sbale[0].flags |= SBAL_FLAGS0_COMMAND;
 
@@ -740,7 +742,7 @@ static struct zfcp_fsf_req *zfcp_fsf_req_create(struct zfcp_adapter *adapter,
 			return ERR_PTR(-ENOMEM);
 		}
 
-		req->qtcb->prefix.req_seq_no = req->adapter->fsf_req_seq_no;
+		req->qtcb->prefix.req_seq_no = adapter->fsf_req_seq_no;
 		req->qtcb->prefix.req_id = req->req_id;
 		req->qtcb->prefix.ulp_info = 26;
 		req->qtcb->prefix.qtcb_type = fsf_qtcb_type[req->fsf_command];
@@ -764,6 +766,7 @@ static struct zfcp_fsf_req *zfcp_fsf_req_create(struct zfcp_adapter *adapter,
 static int zfcp_fsf_req_send(struct zfcp_fsf_req *req)
 {
 	struct zfcp_adapter *adapter = req->adapter;
+	struct zfcp_qdio *qdio = adapter->qdio;
 	unsigned long	     flags;
 	int		     idx;
 	int		     with_qtcb = (req->qtcb != NULL);
@@ -774,9 +777,9 @@ static int zfcp_fsf_req_send(struct zfcp_fsf_req *req)
 	list_add_tail(&req->list, &adapter->req_list[idx]);
 	spin_unlock_irqrestore(&adapter->req_list_lock, flags);
 
-	req->queue_req.qdio_outb_usage = atomic_read(&adapter->req_q.count);
+	req->queue_req.qdio_outb_usage = atomic_read(&qdio->req_q.count);
 	req->issued = get_clock();
-	if (zfcp_qdio_send(adapter, &req->queue_req)) {
+	if (zfcp_qdio_send(qdio, &req->queue_req)) {
 		del_timer(&req->timer);
 		spin_lock_irqsave(&adapter->req_list_lock, flags);
 		/* lookup request again, list might have changed */
@@ -801,25 +804,26 @@ static int zfcp_fsf_req_send(struct zfcp_fsf_req *req)
  * @req_flags: request flags
  * Returns: 0 on success, ERROR otherwise
  */
-int zfcp_fsf_status_read(struct zfcp_adapter *adapter)
+int zfcp_fsf_status_read(struct zfcp_qdio *qdio)
 {
+	struct zfcp_adapter *adapter = qdio->adapter;
 	struct zfcp_fsf_req *req;
 	struct fsf_status_read_buffer *sr_buf;
 	struct qdio_buffer_element *sbale;
 	int retval = -EIO;
 
-	spin_lock_bh(&adapter->req_q_lock);
-	if (zfcp_fsf_req_sbal_get(adapter))
+	spin_lock_bh(&qdio->req_q_lock);
+	if (zfcp_fsf_req_sbal_get(qdio))
 		goto out;
 
-	req = zfcp_fsf_req_create(adapter, FSF_QTCB_UNSOLICITED_STATUS,
+	req = zfcp_fsf_req_create(qdio, FSF_QTCB_UNSOLICITED_STATUS,
 				  adapter->pool.status_read_req);
 	if (IS_ERR(req)) {
 		retval = PTR_ERR(req);
 		goto out;
 	}
 
-	sbale = zfcp_qdio_sbale_req(adapter, &req->queue_req);
+	sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
 	sbale[2].flags |= SBAL_FLAGS_LAST_ENTRY;
 	req->queue_req.sbale_curr = 2;
 
@@ -830,7 +834,7 @@ int zfcp_fsf_status_read(struct zfcp_adapter *adapter)
 	}
 	memset(sr_buf, 0, sizeof(*sr_buf));
 	req->data = sr_buf;
-	sbale = zfcp_qdio_sbale_curr(adapter, &req->queue_req);
+	sbale = zfcp_qdio_sbale_curr(qdio, &req->queue_req);
 	sbale->addr = (void *) sr_buf;
 	sbale->length = sizeof(*sr_buf);
 
@@ -846,7 +850,7 @@ failed_buf:
 	zfcp_fsf_req_free(req);
 	zfcp_hba_dbf_event_fsf_unsol("fail", adapter, NULL);
 out:
-	spin_unlock_bh(&adapter->req_q_lock);
+	spin_unlock_bh(&qdio->req_q_lock);
 	return retval;
 }
 
@@ -913,13 +917,13 @@ struct zfcp_fsf_req *zfcp_fsf_abort_fcp_command(unsigned long old_req_id,
 {
 	struct qdio_buffer_element *sbale;
 	struct zfcp_fsf_req *req = NULL;
-	struct zfcp_adapter *adapter = unit->port->adapter;
+	struct zfcp_qdio *qdio = unit->port->adapter->qdio;
 
-	spin_lock_bh(&adapter->req_q_lock);
-	if (zfcp_fsf_req_sbal_get(adapter))
+	spin_lock_bh(&qdio->req_q_lock);
+	if (zfcp_fsf_req_sbal_get(qdio))
 		goto out;
-	req = zfcp_fsf_req_create(adapter, FSF_QTCB_ABORT_FCP_CMND,
-				  adapter->pool.scsi_abort);
+	req = zfcp_fsf_req_create(qdio, FSF_QTCB_ABORT_FCP_CMND,
+				  qdio->adapter->pool.scsi_abort);
 	if (IS_ERR(req)) {
 		req = NULL;
 		goto out;
@@ -929,7 +933,7 @@ struct zfcp_fsf_req *zfcp_fsf_abort_fcp_command(unsigned long old_req_id,
 		       ZFCP_STATUS_COMMON_UNBLOCKED)))
 		goto out_error_free;
 
-	sbale = zfcp_qdio_sbale_req(adapter, &req->queue_req);
+	sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
 	sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
 	sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
 
@@ -947,7 +951,7 @@ out_error_free:
 	zfcp_fsf_req_free(req);
 	req = NULL;
 out:
-	spin_unlock_bh(&adapter->req_q_lock);
+	spin_unlock_bh(&qdio->req_q_lock);
 	return req;
 }
 
@@ -1024,7 +1028,7 @@ static int zfcp_fsf_setup_ct_els_sbals(struct zfcp_fsf_req *req,
 				       int max_sbals)
 {
 	struct zfcp_adapter *adapter = req->adapter;
-	struct qdio_buffer_element *sbale = zfcp_qdio_sbale_req(adapter,
+	struct qdio_buffer_element *sbale = zfcp_qdio_sbale_req(adapter->qdio,
 							       &req->queue_req);
 	u32 feat = adapter->adapter_features;
 	int bytes;
@@ -1043,7 +1047,7 @@ static int zfcp_fsf_setup_ct_els_sbals(struct zfcp_fsf_req *req,
 		return 0;
 	}
 
-	bytes = zfcp_qdio_sbals_from_sg(adapter, &req->queue_req,
+	bytes = zfcp_qdio_sbals_from_sg(adapter->qdio, &req->queue_req,
 					SBAL_FLAGS0_TYPE_WRITE_READ,
 					sg_req, max_sbals);
 	if (bytes <= 0)
@@ -1051,7 +1055,7 @@ static int zfcp_fsf_setup_ct_els_sbals(struct zfcp_fsf_req *req,
 	req->qtcb->bottom.support.req_buf_length = bytes;
 	req->queue_req.sbale_curr = ZFCP_LAST_SBALE_PER_SBAL;
 
-	bytes = zfcp_qdio_sbals_from_sg(adapter, &req->queue_req,
+	bytes = zfcp_qdio_sbals_from_sg(adapter->qdio, &req->queue_req,
 					SBAL_FLAGS0_TYPE_WRITE_READ,
 					sg_resp, max_sbals);
 	if (bytes <= 0)
@@ -1071,15 +1075,15 @@ int zfcp_fsf_send_ct(struct zfcp_send_ct *ct, mempool_t *pool,
 		     struct zfcp_erp_action *erp_action)
 {
 	struct zfcp_wka_port *wka_port = ct->wka_port;
-	struct zfcp_adapter *adapter = wka_port->adapter;
+	struct zfcp_qdio *qdio = wka_port->adapter->qdio;
 	struct zfcp_fsf_req *req;
 	int ret = -EIO;
 
-	spin_lock_bh(&adapter->req_q_lock);
-	if (zfcp_fsf_req_sbal_get(adapter))
+	spin_lock_bh(&qdio->req_q_lock);
+	if (zfcp_fsf_req_sbal_get(qdio))
 		goto out;
 
-	req = zfcp_fsf_req_create(adapter, FSF_QTCB_SEND_GENERIC, pool);
+	req = zfcp_fsf_req_create(qdio, FSF_QTCB_SEND_GENERIC, pool);
 
 	if (IS_ERR(req)) {
 		ret = PTR_ERR(req);
@@ -1118,7 +1122,7 @@ failed_send:
 	if (erp_action)
 		erp_action->fsf_req = NULL;
 out:
-	spin_unlock_bh(&adapter->req_q_lock);
+	spin_unlock_bh(&qdio->req_q_lock);
 	return ret;
 }
 
@@ -1181,15 +1185,15 @@ skip_fsfstatus:
 int zfcp_fsf_send_els(struct zfcp_send_els *els)
 {
 	struct zfcp_fsf_req *req;
-	struct zfcp_adapter *adapter = els->adapter;
+	struct zfcp_qdio *qdio = els->adapter->qdio;
 	struct fsf_qtcb_bottom_support *bottom;
 	int ret = -EIO;
 
-	spin_lock_bh(&adapter->req_q_lock);
-	if (zfcp_fsf_req_sbal_get(adapter))
+	spin_lock_bh(&qdio->req_q_lock);
+	if (zfcp_fsf_req_sbal_get(qdio))
 		goto out;
 
-	req = zfcp_fsf_req_create(adapter, FSF_QTCB_SEND_ELS, NULL);
+	req = zfcp_fsf_req_create(qdio, FSF_QTCB_SEND_ELS, NULL);
 
 	if (IS_ERR(req)) {
 		ret = PTR_ERR(req);
@@ -1221,7 +1225,7 @@ int zfcp_fsf_send_els(struct zfcp_send_els *els)
 failed_send:
 	zfcp_fsf_req_free(req);
 out:
-	spin_unlock_bh(&adapter->req_q_lock);
+	spin_unlock_bh(&qdio->req_q_lock);
 	return ret;
 }
 
@@ -1229,15 +1233,15 @@ int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action)
 {
 	struct qdio_buffer_element *sbale;
 	struct zfcp_fsf_req *req;
-	struct zfcp_adapter *adapter = erp_action->adapter;
+	struct zfcp_qdio *qdio = erp_action->adapter->qdio;
 	int retval = -EIO;
 
-	spin_lock_bh(&adapter->req_q_lock);
-	if (zfcp_fsf_req_sbal_get(adapter))
+	spin_lock_bh(&qdio->req_q_lock);
+	if (zfcp_fsf_req_sbal_get(qdio))
 		goto out;
 
-	req = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_CONFIG_DATA,
-				  adapter->pool.erp_req);
+	req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_CONFIG_DATA,
+				  qdio->adapter->pool.erp_req);
 
 	if (IS_ERR(req)) {
 		retval = PTR_ERR(req);
@@ -1245,7 +1249,7 @@ int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action)
 	}
 
 	req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
-	sbale = zfcp_qdio_sbale_req(adapter, &req->queue_req);
+	sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
 	sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
 	sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
 
@@ -1265,29 +1269,29 @@ int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action)
 		erp_action->fsf_req = NULL;
 	}
 out:
-	spin_unlock_bh(&adapter->req_q_lock);
+	spin_unlock_bh(&qdio->req_q_lock);
 	return retval;
 }
 
-int zfcp_fsf_exchange_config_data_sync(struct zfcp_adapter *adapter,
+int zfcp_fsf_exchange_config_data_sync(struct zfcp_qdio *qdio,
 				       struct fsf_qtcb_bottom_config *data)
 {
 	struct qdio_buffer_element *sbale;
 	struct zfcp_fsf_req *req = NULL;
 	int retval = -EIO;
 
-	spin_lock_bh(&adapter->req_q_lock);
-	if (zfcp_fsf_req_sbal_get(adapter))
+	spin_lock_bh(&qdio->req_q_lock);
+	if (zfcp_fsf_req_sbal_get(qdio))
 		goto out_unlock;
 
-	req = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_CONFIG_DATA, NULL);
+	req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_CONFIG_DATA, NULL);
 
 	if (IS_ERR(req)) {
 		retval = PTR_ERR(req);
 		goto out_unlock;
 	}
 
-	sbale = zfcp_qdio_sbale_req(adapter, &req->queue_req);
+	sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
 	sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
 	sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
 	req->handler = zfcp_fsf_exchange_config_data_handler;
@@ -1303,7 +1307,7 @@ int zfcp_fsf_exchange_config_data_sync(struct zfcp_adapter *adapter,
 
 	zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
 	retval = zfcp_fsf_req_send(req);
-	spin_unlock_bh(&adapter->req_q_lock);
+	spin_unlock_bh(&qdio->req_q_lock);
 	if (!retval)
 		wait_for_completion(&req->completion);
 
@@ -1311,7 +1315,7 @@ int zfcp_fsf_exchange_config_data_sync(struct zfcp_adapter *adapter,
 	return retval;
 
 out_unlock:
-	spin_unlock_bh(&adapter->req_q_lock);
+	spin_unlock_bh(&qdio->req_q_lock);
 	return retval;
 }
 
@@ -1322,20 +1326,20 @@ out_unlock:
  */
 int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action)
 {
+	struct zfcp_qdio *qdio = erp_action->adapter->qdio;
 	struct qdio_buffer_element *sbale;
 	struct zfcp_fsf_req *req;
-	struct zfcp_adapter *adapter = erp_action->adapter;
 	int retval = -EIO;
 
-	if (!(adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT))
+	if (!(qdio->adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT))
 		return -EOPNOTSUPP;
 
-	spin_lock_bh(&adapter->req_q_lock);
-	if (zfcp_fsf_req_sbal_get(adapter))
+	spin_lock_bh(&qdio->req_q_lock);
+	if (zfcp_fsf_req_sbal_get(qdio))
 		goto out;
 
-	req = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_PORT_DATA,
-				  adapter->pool.erp_req);
+	req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_PORT_DATA,
+				  qdio->adapter->pool.erp_req);
 
 	if (IS_ERR(req)) {
 		retval = PTR_ERR(req);
@@ -1343,7 +1347,7 @@ int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action)
 	}
 
 	req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
-	sbale = zfcp_qdio_sbale_req(adapter, &req->queue_req);
+	sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
 	sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
 	sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
 
@@ -1358,31 +1362,31 @@ int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action)
 		erp_action->fsf_req = NULL;
 	}
 out:
-	spin_unlock_bh(&adapter->req_q_lock);
+	spin_unlock_bh(&qdio->req_q_lock);
 	return retval;
 }
 
 /**
  * zfcp_fsf_exchange_port_data_sync - request information about local port
- * @adapter: pointer to struct zfcp_adapter
+ * @qdio: pointer to struct zfcp_qdio
  * @data: pointer to struct fsf_qtcb_bottom_port
  * Returns: 0 on success, error otherwise
  */
-int zfcp_fsf_exchange_port_data_sync(struct zfcp_adapter *adapter,
+int zfcp_fsf_exchange_port_data_sync(struct zfcp_qdio *qdio,
 				     struct fsf_qtcb_bottom_port *data)
 {
 	struct qdio_buffer_element *sbale;
 	struct zfcp_fsf_req *req = NULL;
 	int retval = -EIO;
 
-	if (!(adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT))
+	if (!(qdio->adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT))
 		return -EOPNOTSUPP;
 
-	spin_lock_bh(&adapter->req_q_lock);
-	if (zfcp_fsf_req_sbal_get(adapter))
+	spin_lock_bh(&qdio->req_q_lock);
+	if (zfcp_fsf_req_sbal_get(qdio))
 		goto out_unlock;
 
-	req = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_PORT_DATA, NULL);
+	req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_PORT_DATA, NULL);
 
 	if (IS_ERR(req)) {
 		retval = PTR_ERR(req);
@@ -1392,14 +1396,14 @@ int zfcp_fsf_exchange_port_data_sync(struct zfcp_adapter *adapter,
 	if (data)
 		req->data = data;
 
-	sbale = zfcp_qdio_sbale_req(adapter, &req->queue_req);
+	sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
 	sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
 	sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
 
 	req->handler = zfcp_fsf_exchange_port_data_handler;
 	zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
 	retval = zfcp_fsf_req_send(req);
-	spin_unlock_bh(&adapter->req_q_lock);
+	spin_unlock_bh(&qdio->req_q_lock);
 
 	if (!retval)
 		wait_for_completion(&req->completion);
@@ -1409,7 +1413,7 @@ int zfcp_fsf_exchange_port_data_sync(struct zfcp_adapter *adapter,
 	return retval;
 
 out_unlock:
-	spin_unlock_bh(&adapter->req_q_lock);
+	spin_unlock_bh(&qdio->req_q_lock);
 	return retval;
 }
 
@@ -1495,17 +1499,17 @@ out:
 int zfcp_fsf_open_port(struct zfcp_erp_action *erp_action)
 {
 	struct qdio_buffer_element *sbale;
-	struct zfcp_adapter *adapter = erp_action->adapter;
-	struct zfcp_fsf_req *req;
+	struct zfcp_qdio *qdio = erp_action->adapter->qdio;
 	struct zfcp_port *port = erp_action->port;
+	struct zfcp_fsf_req *req;
 	int retval = -EIO;
 
-	spin_lock_bh(&adapter->req_q_lock);
-	if (zfcp_fsf_req_sbal_get(adapter))
+	spin_lock_bh(&qdio->req_q_lock);
+	if (zfcp_fsf_req_sbal_get(qdio))
 		goto out;
 
-	req = zfcp_fsf_req_create(adapter, FSF_QTCB_OPEN_PORT_WITH_DID,
-				  adapter->pool.erp_req);
+	req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_PORT_WITH_DID,
+				  qdio->adapter->pool.erp_req);
 
 	if (IS_ERR(req)) {
 		retval = PTR_ERR(req);
@@ -1513,7 +1517,7 @@ int zfcp_fsf_open_port(struct zfcp_erp_action *erp_action)
 	}
 
 	req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
-	sbale = zfcp_qdio_sbale_req(adapter, &req->queue_req);
+	sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
         sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
         sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
 
@@ -1532,7 +1536,7 @@ int zfcp_fsf_open_port(struct zfcp_erp_action *erp_action)
 		zfcp_port_put(port);
 	}
 out:
-	spin_unlock_bh(&adapter->req_q_lock);
+	spin_unlock_bh(&qdio->req_q_lock);
 	return retval;
 }
 
@@ -1566,16 +1570,16 @@ static void zfcp_fsf_close_port_handler(struct zfcp_fsf_req *req)
 int zfcp_fsf_close_port(struct zfcp_erp_action *erp_action)
 {
 	struct qdio_buffer_element *sbale;
-	struct zfcp_adapter *adapter = erp_action->adapter;
+	struct zfcp_qdio *qdio = erp_action->adapter->qdio;
 	struct zfcp_fsf_req *req;
 	int retval = -EIO;
 
-	spin_lock_bh(&adapter->req_q_lock);
-	if (zfcp_fsf_req_sbal_get(adapter))
+	spin_lock_bh(&qdio->req_q_lock);
+	if (zfcp_fsf_req_sbal_get(qdio))
 		goto out;
 
-	req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_PORT,
-				  adapter->pool.erp_req);
+	req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PORT,
+				  qdio->adapter->pool.erp_req);
 
 	if (IS_ERR(req)) {
 		retval = PTR_ERR(req);
@@ -1583,7 +1587,7 @@ int zfcp_fsf_close_port(struct zfcp_erp_action *erp_action)
 	}
 
 	req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
-	sbale = zfcp_qdio_sbale_req(adapter, &req->queue_req);
+	sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
 	sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
 	sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
 
@@ -1600,7 +1604,7 @@ int zfcp_fsf_close_port(struct zfcp_erp_action *erp_action)
 		erp_action->fsf_req = NULL;
 	}
 out:
-	spin_unlock_bh(&adapter->req_q_lock);
+	spin_unlock_bh(&qdio->req_q_lock);
 	return retval;
 }
 
@@ -1643,16 +1647,16 @@ out:
 int zfcp_fsf_open_wka_port(struct zfcp_wka_port *wka_port)
 {
 	struct qdio_buffer_element *sbale;
-	struct zfcp_adapter *adapter = wka_port->adapter;
+	struct zfcp_qdio *qdio = wka_port->adapter->qdio;
 	struct zfcp_fsf_req *req;
 	int retval = -EIO;
 
-	spin_lock_bh(&adapter->req_q_lock);
-	if (zfcp_fsf_req_sbal_get(adapter))
+	spin_lock_bh(&qdio->req_q_lock);
+	if (zfcp_fsf_req_sbal_get(qdio))
 		goto out;
 
-	req = zfcp_fsf_req_create(adapter, FSF_QTCB_OPEN_PORT_WITH_DID,
-				  adapter->pool.erp_req);
+	req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_PORT_WITH_DID,
+				  qdio->adapter->pool.erp_req);
 
 	if (unlikely(IS_ERR(req))) {
 		retval = PTR_ERR(req);
@@ -1660,7 +1664,7 @@ int zfcp_fsf_open_wka_port(struct zfcp_wka_port *wka_port)
 	}
 
 	req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
-	sbale = zfcp_qdio_sbale_req(adapter, &req->queue_req);
+	sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
 	sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
 	sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
 
@@ -1673,7 +1677,7 @@ int zfcp_fsf_open_wka_port(struct zfcp_wka_port *wka_port)
 	if (retval)
 		zfcp_fsf_req_free(req);
 out:
-	spin_unlock_bh(&adapter->req_q_lock);
+	spin_unlock_bh(&qdio->req_q_lock);
 	return retval;
 }
 
@@ -1698,16 +1702,16 @@ static void zfcp_fsf_close_wka_port_handler(struct zfcp_fsf_req *req)
 int zfcp_fsf_close_wka_port(struct zfcp_wka_port *wka_port)
 {
 	struct qdio_buffer_element *sbale;
-	struct zfcp_adapter *adapter = wka_port->adapter;
+	struct zfcp_qdio *qdio = wka_port->adapter->qdio;
 	struct zfcp_fsf_req *req;
 	int retval = -EIO;
 
-	spin_lock_bh(&adapter->req_q_lock);
-	if (zfcp_fsf_req_sbal_get(adapter))
+	spin_lock_bh(&qdio->req_q_lock);
+	if (zfcp_fsf_req_sbal_get(qdio))
 		goto out;
 
-	req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_PORT,
-				  adapter->pool.erp_req);
+	req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PORT,
+				  qdio->adapter->pool.erp_req);
 
 	if (unlikely(IS_ERR(req))) {
 		retval = PTR_ERR(req);
@@ -1715,7 +1719,7 @@ int zfcp_fsf_close_wka_port(struct zfcp_wka_port *wka_port)
 	}
 
 	req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
-	sbale = zfcp_qdio_sbale_req(adapter, &req->queue_req);
+	sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
 	sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
 	sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
 
@@ -1728,7 +1732,7 @@ int zfcp_fsf_close_wka_port(struct zfcp_wka_port *wka_port)
 	if (retval)
 		zfcp_fsf_req_free(req);
 out:
-	spin_unlock_bh(&adapter->req_q_lock);
+	spin_unlock_bh(&qdio->req_q_lock);
 	return retval;
 }
 
@@ -1790,16 +1794,16 @@ static void zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *req)
 int zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action)
 {
 	struct qdio_buffer_element *sbale;
-	struct zfcp_adapter *adapter = erp_action->adapter;
+	struct zfcp_qdio *qdio = erp_action->adapter->qdio;
 	struct zfcp_fsf_req *req;
 	int retval = -EIO;
 
-	spin_lock_bh(&adapter->req_q_lock);
-	if (zfcp_fsf_req_sbal_get(adapter))
+	spin_lock_bh(&qdio->req_q_lock);
+	if (zfcp_fsf_req_sbal_get(qdio))
 		goto out;
 
-	req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_PHYSICAL_PORT,
-				  adapter->pool.erp_req);
+	req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PHYSICAL_PORT,
+				  qdio->adapter->pool.erp_req);
 
 	if (IS_ERR(req)) {
 		retval = PTR_ERR(req);
@@ -1807,7 +1811,7 @@ int zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action)
 	}
 
 	req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
-	sbale = zfcp_qdio_sbale_req(adapter, &req->queue_req);
+	sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
 	sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
 	sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
 
@@ -1824,7 +1828,7 @@ int zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action)
 		erp_action->fsf_req = NULL;
 	}
 out:
-	spin_unlock_bh(&adapter->req_q_lock);
+	spin_unlock_bh(&qdio->req_q_lock);
 	return retval;
 }
 
@@ -1964,14 +1968,15 @@ int zfc