[SCSI] zfcp: Separate qdio attributes from zfcp_fsf_req
authorSwen Schillig <swen@vnet.ibm.com>
Tue, 18 Aug 2009 13:43:18 +0000 (15:43 +0200)
committerJames Bottomley <James.Bottomley@suse.de>
Sat, 5 Sep 2009 13:49:24 +0000 (08:49 -0500)
Split all qdio related attributes out of zfcp_fsf_req and put it in
new 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>
drivers/s390/scsi/zfcp_dbf.c
drivers/s390/scsi/zfcp_def.h
drivers/s390/scsi/zfcp_ext.h
drivers/s390/scsi/zfcp_fsf.c
drivers/s390/scsi/zfcp_qdio.c

index 5568440ec2fc8b11fdad8431a688abafb341e140..fc7f3d66fe379ffc2b8802edda696573a9255377 100644 (file)
@@ -152,9 +152,9 @@ void _zfcp_hba_dbf_event_fsf_response(const char *tag2, int level,
        memcpy(response->fsf_status_qual,
               fsf_status_qual, FSF_STATUS_QUALIFIER_SIZE);
        response->fsf_req_status = fsf_req->status;
-       response->sbal_first = fsf_req->sbal_first;
-       response->sbal_last = fsf_req->sbal_last;
-       response->sbal_response = fsf_req->sbal_response;
+       response->sbal_first = fsf_req->queue_req.sbal_first;
+       response->sbal_last = fsf_req->queue_req.sbal_last;
+       response->sbal_response = fsf_req->queue_req.sbal_response;
        response->pool = fsf_req->pool != NULL;
        response->erp_action = (unsigned long)fsf_req->erp_action;
 
index 2715a103e5a81cd790ac3131b1ca5d95b001e747..a04bdfd4d2f6be0524530806329bb8858df04bb1 100644 (file)
@@ -529,36 +529,64 @@ struct zfcp_unit {
        struct work_struct      scsi_work;
 };
 
-/* FSF request */
+/**
+ * struct zfcp_queue_req - queue related values for a request
+ * @sbal_number: number of free SBALs
+ * @sbal_first: first SBAL for this request
+ * @sbal_last: last SBAL for this request
+ * @sbal_limit: last possible SBAL for this request
+ * @sbale_curr: current SBALE at creation of this request
+ * @sbal_response: SBAL used in interrupt
+ * @qdio_outb_usage: usage of outbound queue
+ * @qdio_inb_usage: usage of inbound queue
+ */
+struct zfcp_queue_req {
+       u8                     sbal_number;
+       u8                     sbal_first;
+       u8                     sbal_last;
+       u8                     sbal_limit;
+       u8                     sbale_curr;
+       u8                     sbal_response;
+       u16                    qdio_outb_usage;
+       u16                    qdio_inb_usage;
+};
+
+/**
+ * struct zfcp_fsf_req - basic FSF request structure
+ * @list: list of FSF requests
+ * @req_id: unique request ID
+ * @adapter: adapter this request belongs to
+ * @queue_req: queue related values
+ * @completion: used to signal the completion of the request
+ * @status: status of the request
+ * @fsf_command: FSF command issued
+ * @qtcb: associated QTCB
+ * @seq_no: sequence number of this request
+ * @data: private data
+ * @timer: timer data of this request
+ * @erp_action: reference to erp action if request issued on behalf of ERP
+ * @pool: reference to memory pool if used for this request
+ * @issued: time when request was send (STCK)
+ * @unit: reference to unit if this request is a SCSI request
+ * @handler: handler which should be called to process response
+ */
 struct zfcp_fsf_req {
-       struct list_head       list;           /* list of FSF requests */
-       unsigned long          req_id;         /* unique request ID */
-       struct zfcp_adapter    *adapter;       /* adapter request belongs to */
-       u8                     sbal_number;    /* nr of SBALs free for use */
-       u8                     sbal_first;     /* first SBAL for this request */
-       u8                     sbal_last;      /* last SBAL for this request */
-       u8                     sbal_limit;      /* last possible SBAL for
-                                                 this reuest */
-       u8                     sbale_curr;     /* current SBALE during creation
-                                                 of request */
-       u8                      sbal_response;  /* SBAL used in interrupt */
-       struct completion       completion;     /* can be used by a routine
-                                                 to wait for completion */
-       u32                     status;        /* status of this request */
-       u32                    fsf_command;    /* FSF Command copy */
-       struct fsf_qtcb        *qtcb;          /* address of associated QTCB */
-       u32                    seq_no;         /* Sequence number of request */
-       void                    *data;           /* private data of request */
-       struct timer_list     timer;           /* used for erp or scsi er */
-       struct zfcp_erp_action *erp_action;    /* used if this request is
-                                                 issued on behalf of erp */
-       mempool_t              *pool;          /* used if request was alloacted
-                                                 from emergency pool */
-       unsigned long long     issued;         /* request sent time (STCK) */
-       struct zfcp_unit       *unit;
+       struct list_head        list;
+       unsigned long           req_id;
+       struct zfcp_adapter     *adapter;
+       struct zfcp_queue_req   queue_req;
+       struct completion       completion;
+       u32                     status;
+       u32                     fsf_command;
+       struct fsf_qtcb         *qtcb;
+       u32                     seq_no;
+       void                    *data;
+       struct timer_list       timer;
+       struct zfcp_erp_action  *erp_action;
+       mempool_t               *pool;
+       unsigned long long      issued;
+       struct zfcp_unit        *unit;
        void                    (*handler)(struct zfcp_fsf_req *);
-       u16                     qdio_outb_usage;/* usage of outbound queue */
-       u16                     qdio_inb_usage; /* usage of inbound queue */
 };
 
 /* driver data */
index 6a3727bdb38647f6bd3024de9fe7f6e7591a509b..d11c0f44dad352c7fb0914ea929d7e31f6d86852 100644 (file)
@@ -142,10 +142,13 @@ extern void zfcp_fsf_reqid_check(struct zfcp_adapter *, 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_fsf_req *);
-extern struct qdio_buffer_element *zfcp_qdio_sbale_req(struct zfcp_fsf_req *);
-extern struct qdio_buffer_element *zfcp_qdio_sbale_curr(struct zfcp_fsf_req *);
-extern int zfcp_qdio_sbals_from_sg(struct zfcp_fsf_req *, unsigned long,
+extern int zfcp_qdio_send(struct zfcp_adapter *, struct zfcp_queue_req *);
+extern struct qdio_buffer_element
+       *zfcp_qdio_sbale_req(struct zfcp_adapter *, 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 *,
+                                  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 *);
index 5b73f989a62908c813b4961b0036f830f225a0fe..e88b7804780be0ce7ff4b78ba86f452df1994051 100644 (file)
@@ -720,12 +720,12 @@ static struct zfcp_fsf_req *zfcp_fsf_req_create(struct zfcp_adapter *adapter,
        req->adapter = adapter;
        req->fsf_command = fsf_cmd;
        req->req_id = adapter->req_no;
-       req->sbal_number = 1;
-       req->sbal_first = req_q->first;
-       req->sbal_last = req_q->first;
-       req->sbale_curr = 1;
+       req->queue_req.sbal_number = 1;
+       req->queue_req.sbal_first = req_q->first;
+       req->queue_req.sbal_last = req_q->first;
+       req->queue_req.sbale_curr = 1;
 
-       sbale = zfcp_qdio_sbale_req(req);
+       sbale = zfcp_qdio_sbale_req(adapter, &req->queue_req);
        sbale[0].addr = (void *) req->req_id;
        sbale[0].flags |= SBAL_FLAGS0_COMMAND;
 
@@ -774,9 +774,9 @@ 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->qdio_outb_usage = atomic_read(&adapter->req_q.count);
+       req->queue_req.qdio_outb_usage = atomic_read(&adapter->req_q.count);
        req->issued = get_clock();
-       if (zfcp_qdio_send(req)) {
+       if (zfcp_qdio_send(adapter, &req->queue_req)) {
                del_timer(&req->timer);
                spin_lock_irqsave(&adapter->req_list_lock, flags);
                /* lookup request again, list might have changed */
@@ -819,9 +819,9 @@ int zfcp_fsf_status_read(struct zfcp_adapter *adapter)
                goto out;
        }
 
-       sbale = zfcp_qdio_sbale_req(req);
+       sbale = zfcp_qdio_sbale_req(adapter, &req->queue_req);
        sbale[2].flags |= SBAL_FLAGS_LAST_ENTRY;
-       req->sbale_curr = 2;
+       req->queue_req.sbale_curr = 2;
 
        sr_buf = mempool_alloc(adapter->pool.status_read_data, GFP_ATOMIC);
        if (!sr_buf) {
@@ -830,7 +830,7 @@ 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(req);
+       sbale = zfcp_qdio_sbale_curr(adapter, &req->queue_req);
        sbale->addr = (void *) sr_buf;
        sbale->length = sizeof(*sr_buf);
 
@@ -929,7 +929,7 @@ 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(req);
+       sbale = zfcp_qdio_sbale_req(adapter, &req->queue_req);
        sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
        sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
 
@@ -1023,8 +1023,10 @@ static int zfcp_fsf_setup_ct_els_sbals(struct zfcp_fsf_req *req,
                                       struct scatterlist *sg_resp,
                                       int max_sbals)
 {
-       struct qdio_buffer_element *sbale = zfcp_qdio_sbale_req(req);
-       u32 feat = req->adapter->adapter_features;
+       struct zfcp_adapter *adapter = req->adapter;
+       struct qdio_buffer_element *sbale = zfcp_qdio_sbale_req(adapter,
+                                                              &req->queue_req);
+       u32 feat = adapter->adapter_features;
        int bytes;
 
        if (!(feat & FSF_FEATURE_ELS_CT_CHAINED_SBALS)) {
@@ -1041,14 +1043,16 @@ static int zfcp_fsf_setup_ct_els_sbals(struct zfcp_fsf_req *req,
                return 0;
        }
 
-       bytes = zfcp_qdio_sbals_from_sg(req, SBAL_FLAGS0_TYPE_WRITE_READ,
+       bytes = zfcp_qdio_sbals_from_sg(adapter, &req->queue_req,
+                                       SBAL_FLAGS0_TYPE_WRITE_READ,
                                        sg_req, max_sbals);
        if (bytes <= 0)
                return -EIO;
        req->qtcb->bottom.support.req_buf_length = bytes;
-       req->sbale_curr = ZFCP_LAST_SBALE_PER_SBAL;
+       req->queue_req.sbale_curr = ZFCP_LAST_SBALE_PER_SBAL;
 
-       bytes = zfcp_qdio_sbals_from_sg(req, SBAL_FLAGS0_TYPE_WRITE_READ,
+       bytes = zfcp_qdio_sbals_from_sg(adapter, &req->queue_req,
+                                       SBAL_FLAGS0_TYPE_WRITE_READ,
                                        sg_resp, max_sbals);
        if (bytes <= 0)
                return -EIO;
@@ -1241,7 +1245,7 @@ int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action)
        }
 
        req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
-       sbale = zfcp_qdio_sbale_req(req);
+       sbale = zfcp_qdio_sbale_req(adapter, &req->queue_req);
        sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
        sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
 
@@ -1283,7 +1287,7 @@ int zfcp_fsf_exchange_config_data_sync(struct zfcp_adapter *adapter,
                goto out_unlock;
        }
 
-       sbale = zfcp_qdio_sbale_req(req);
+       sbale = zfcp_qdio_sbale_req(adapter, &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;
@@ -1339,7 +1343,7 @@ int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action)
        }
 
        req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
-       sbale = zfcp_qdio_sbale_req(req);
+       sbale = zfcp_qdio_sbale_req(adapter, &req->queue_req);
        sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
        sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
 
@@ -1388,7 +1392,7 @@ int zfcp_fsf_exchange_port_data_sync(struct zfcp_adapter *adapter,
        if (data)
                req->data = data;
 
-       sbale = zfcp_qdio_sbale_req(req);
+       sbale = zfcp_qdio_sbale_req(adapter, &req->queue_req);
        sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
        sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
 
@@ -1509,7 +1513,7 @@ int zfcp_fsf_open_port(struct zfcp_erp_action *erp_action)
        }
 
        req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
-       sbale = zfcp_qdio_sbale_req(req);
+       sbale = zfcp_qdio_sbale_req(adapter, &req->queue_req);
         sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
         sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
 
@@ -1579,7 +1583,7 @@ int zfcp_fsf_close_port(struct zfcp_erp_action *erp_action)
        }
 
        req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
-       sbale = zfcp_qdio_sbale_req(req);
+       sbale = zfcp_qdio_sbale_req(adapter, &req->queue_req);
        sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
        sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
 
@@ -1656,7 +1660,7 @@ int zfcp_fsf_open_wka_port(struct zfcp_wka_port *wka_port)
        }
 
        req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
-       sbale = zfcp_qdio_sbale_req(req);
+       sbale = zfcp_qdio_sbale_req(adapter, &req->queue_req);
        sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
        sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
 
@@ -1711,7 +1715,7 @@ int zfcp_fsf_close_wka_port(struct zfcp_wka_port *wka_port)
        }
 
        req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
-       sbale = zfcp_qdio_sbale_req(req);
+       sbale = zfcp_qdio_sbale_req(adapter, &req->queue_req);
        sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
        sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
 
@@ -1803,7 +1807,7 @@ int zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action)
        }
 
        req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
-       sbale = zfcp_qdio_sbale_req(req);
+       sbale = zfcp_qdio_sbale_req(adapter, &req->queue_req);
        sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
        sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
 
@@ -1976,7 +1980,7 @@ int zfcp_fsf_open_unit(struct zfcp_erp_action *erp_action)
        }
 
        req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
-       sbale = zfcp_qdio_sbale_req(req);
+       sbale = zfcp_qdio_sbale_req(adapter, &req->queue_req);
         sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
         sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
 
@@ -2063,7 +2067,7 @@ int zfcp_fsf_close_unit(struct zfcp_erp_action *erp_action)
        }
 
        req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
-       sbale = zfcp_qdio_sbale_req(req);
+       sbale = zfcp_qdio_sbale_req(adapter, &req->queue_req);
        sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
        sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
 
@@ -2140,8 +2144,8 @@ static void zfcp_fsf_trace_latency(struct zfcp_fsf_req *fsf_req)
        }
        if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR)
                trace.flags |= ZFCP_BLK_REQ_ERROR;
-       trace.inb_usage = fsf_req->qdio_inb_usage;
-       trace.outb_usage = fsf_req->qdio_outb_usage;
+       trace.inb_usage = fsf_req->queue_req.qdio_inb_usage;
+       trace.outb_usage = fsf_req->queue_req.qdio_outb_usage;
 
        blk_add_driver_data(req->q, req, &trace, sizeof(trace));
 }
@@ -2420,11 +2424,11 @@ int zfcp_fsf_send_fcp_command_task(struct zfcp_unit *unit,
        req->qtcb->bottom.io.fcp_cmnd_length = sizeof(struct fcp_cmnd_iu) +
                fcp_cmnd_iu->add_fcp_cdb_length + sizeof(u32);
 
-       real_bytes = zfcp_qdio_sbals_from_sg(req, sbtype,
+       real_bytes = zfcp_qdio_sbals_from_sg(adapter, &req->queue_req, sbtype,
                                             scsi_sglist(scsi_cmnd),
                                             FSF_MAX_SBALS_PER_REQ);
        if (unlikely(real_bytes < 0)) {
-               if (req->sbal_number >= FSF_MAX_SBALS_PER_REQ) {
+               if (req->queue_req.sbal_number >= FSF_MAX_SBALS_PER_REQ) {
                        dev_err(&adapter->ccw_device->dev,
                                "Oversize data package, unit 0x%016Lx "
                                "on port 0x%016Lx closed\n",
@@ -2492,7 +2496,7 @@ struct zfcp_fsf_req *zfcp_fsf_send_fcp_ctm(struct zfcp_unit *unit, u8 tm_flags)
        req->qtcb->bottom.io.fcp_cmnd_length =  sizeof(struct fcp_cmnd_iu) +
                                                sizeof(u32);
 
-       sbale = zfcp_qdio_sbale_req(req);
+       sbale = zfcp_qdio_sbale_req(adapter, &req->queue_req);
        sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE;
        sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
 
@@ -2555,15 +2559,15 @@ struct zfcp_fsf_req *zfcp_fsf_control_file(struct zfcp_adapter *adapter,
 
        req->handler = zfcp_fsf_control_file_handler;
 
-       sbale = zfcp_qdio_sbale_req(req);
+       sbale = zfcp_qdio_sbale_req(adapter, &req->queue_req);
        sbale[0].flags |= direction;
 
        bottom = &req->qtcb->bottom.support;
        bottom->operation_subtype = FSF_CFDC_OPERATION_SUBTYPE;
        bottom->option = fsf_cfdc->option;
 
-       bytes = zfcp_qdio_sbals_from_sg(req, direction, fsf_cfdc->sg,
-                                       FSF_MAX_SBALS_PER_REQ);
+       bytes = zfcp_qdio_sbals_from_sg(adapter, &req->queue_req, direction,
+                                       fsf_cfdc->sg, FSF_MAX_SBALS_PER_REQ);
        if (bytes != ZFCP_CFDC_MAX_SIZE) {
                zfcp_fsf_req_free(req);
                goto out;
@@ -2612,8 +2616,9 @@ void zfcp_fsf_reqid_check(struct zfcp_adapter *adapter, int sbal_idx)
                list_del(&fsf_req->list);
                spin_unlock_irqrestore(&adapter->req_list_lock, flags);
 
-               fsf_req->sbal_response = sbal_idx;
-               fsf_req->qdio_inb_usage = atomic_read(&adapter->resp_q.count);
+               fsf_req->queue_req.sbal_response = sbal_idx;
+               fsf_req->queue_req.qdio_inb_usage =
+                       atomic_read(&adapter->resp_q.count);
                zfcp_fsf_req_complete(fsf_req);
 
                if (likely(sbale->flags & SBAL_FLAGS_LAST_ENTRY))
index 2e9b3a9cebd99966500c807de66057f2d542e3c3..e118874976f088d29706e5ecb2f3ca2fa6de8bc2 100644 (file)
@@ -3,7 +3,7 @@
  *
  * Setup and helper functions to access QDIO.
  *
- * Copyright IBM Corporation 2002, 2008
+ * Copyright IBM Corporation 2002, 2009
  */
 
 #define KMSG_COMPONENT "zfcp"
@@ -165,12 +165,14 @@ static void zfcp_qdio_int_resp(struct ccw_device *cdev, unsigned int qdio_err,
 
 /**
  * zfcp_qdio_sbale_req - return ptr to SBALE of req_q for a struct zfcp_fsf_req
- * @fsf_req: pointer to struct fsf_req
+ * @adapter: pointer to struct zfcp_adapter
+ * @q_rec: pointer to struct zfcp_queue_rec
  * Returns: pointer to qdio_buffer_element (SBALE) structure
  */
-struct qdio_buffer_element *zfcp_qdio_sbale_req(struct zfcp_fsf_req *req)
+struct qdio_buffer_element *zfcp_qdio_sbale_req(struct zfcp_adapter *adapter,
+                                               struct zfcp_queue_req *q_req)
 {
-       return zfcp_qdio_sbale(&req->adapter->req_q, req->sbal_last, 0);
+       return zfcp_qdio_sbale(&adapter->req_q, q_req->sbal_last, 0);
 }
 
 /**
@@ -178,74 +180,80 @@ struct qdio_buffer_element *zfcp_qdio_sbale_req(struct zfcp_fsf_req *req)
  * @fsf_req: pointer to struct fsf_req
  * Returns: pointer to qdio_buffer_element (SBALE) structure
  */
-struct qdio_buffer_element *zfcp_qdio_sbale_curr(struct zfcp_fsf_req *req)
+struct qdio_buffer_element *zfcp_qdio_sbale_curr(struct zfcp_adapter *adapter,
+                                                struct zfcp_queue_req *q_req)
 {
-       return zfcp_qdio_sbale(&req->adapter->req_q, req->sbal_last,
-                              req->sbale_curr);
+       return zfcp_qdio_sbale(&adapter->req_q, q_req->sbal_last,
+                              q_req->sbale_curr);
 }
 
-static void zfcp_qdio_sbal_limit(struct zfcp_fsf_req *fsf_req, int max_sbals)
+static void zfcp_qdio_sbal_limit(struct zfcp_adapter *adapter,
+                                struct zfcp_queue_req *q_req, int max_sbals)
 {
-       int count = atomic_read(&fsf_req->adapter->req_q.count);
+       int count = atomic_read(&adapter->req_q.count);
        count = min(count, max_sbals);
-       fsf_req->sbal_limit = (fsf_req->sbal_first + count - 1)
+       q_req->sbal_limit = (q_req->sbal_first + count - 1)
                                        % QDIO_MAX_BUFFERS_PER_Q;
 }
 
 static struct qdio_buffer_element *
-zfcp_qdio_sbal_chain(struct zfcp_fsf_req *fsf_req, unsigned long sbtype)
+zfcp_qdio_sbal_chain(struct zfcp_adapter *adapter, struct zfcp_queue_req *q_req,
+                    unsigned long sbtype)
 {
        struct qdio_buffer_element *sbale;
 
        /* set last entry flag in current SBALE of current SBAL */
-       sbale = zfcp_qdio_sbale_curr(fsf_req);
+       sbale = zfcp_qdio_sbale_curr(adapter, q_req);
        sbale->flags |= SBAL_FLAGS_LAST_ENTRY;
 
        /* don't exceed last allowed SBAL */
-       if (fsf_req->sbal_last == fsf_req->sbal_limit)
+       if (q_req->sbal_last == q_req->sbal_limit)
                return NULL;
 
        /* set chaining flag in first SBALE of current SBAL */
-       sbale = zfcp_qdio_sbale_req(fsf_req);
+       sbale = zfcp_qdio_sbale_req(adapter, q_req);
        sbale->flags |= SBAL_FLAGS0_MORE_SBALS;
 
        /* calculate index of next SBAL */
-       fsf_req->sbal_last++;
-       fsf_req->sbal_last %= QDIO_MAX_BUFFERS_PER_Q;
+       q_req->sbal_last++;
+       q_req->sbal_last %= QDIO_MAX_BUFFERS_PER_Q;
 
        /* keep this requests number of SBALs up-to-date */
-       fsf_req->sbal_number++;
+       q_req->sbal_number++;
 
        /* start at first SBALE of new SBAL */
-       fsf_req->sbale_curr = 0;
+       q_req->sbale_curr = 0;
 
        /* set storage-block type for new SBAL */
-       sbale = zfcp_qdio_sbale_curr(fsf_req);
+       sbale = zfcp_qdio_sbale_curr(adapter, q_req);
        sbale->flags |= sbtype;
 
        return sbale;
 }
 
 static struct qdio_buffer_element *
-zfcp_qdio_sbale_next(struct zfcp_fsf_req *fsf_req, unsigned long sbtype)
+zfcp_qdio_sbale_next(struct zfcp_adapter *adapter, struct zfcp_queue_req *q_req,
+                    unsigned int sbtype)
 {
-       if (fsf_req->sbale_curr == ZFCP_LAST_SBALE_PER_SBAL)
-               return zfcp_qdio_sbal_chain(fsf_req, sbtype);
-       fsf_req->sbale_curr++;
-       return zfcp_qdio_sbale_curr(fsf_req);
+       if (q_req->sbale_curr == ZFCP_LAST_SBALE_PER_SBAL)
+               return zfcp_qdio_sbal_chain(adapter, q_req, sbtype);
+       q_req->sbale_curr++;
+       return zfcp_qdio_sbale_curr(adapter, q_req);
 }
 
-static void zfcp_qdio_undo_sbals(struct zfcp_fsf_req *fsf_req)
+static void zfcp_qdio_undo_sbals(struct zfcp_adapter *adapter,
+                                struct zfcp_queue_req *q_req)
 {
-       struct qdio_buffer **sbal = fsf_req->adapter->req_q.sbal;
-       int first = fsf_req->sbal_first;
-       int last = fsf_req->sbal_last;
+       struct qdio_buffer **sbal = adapter->req_q.sbal;
+       int first = q_req->sbal_first;
+       int last = q_req->sbal_last;
        int count = (last - first + QDIO_MAX_BUFFERS_PER_Q) %
                QDIO_MAX_BUFFERS_PER_Q + 1;
        zfcp_qdio_zero_sbals(sbal, first, count);
 }
 
-static int zfcp_qdio_fill_sbals(struct zfcp_fsf_req *fsf_req,
+static int zfcp_qdio_fill_sbals(struct zfcp_adapter *adapter,
+                               struct zfcp_queue_req *q_req,
                                unsigned int sbtype, void *start_addr,
                                unsigned int total_length)
 {
@@ -256,10 +264,10 @@ static int zfcp_qdio_fill_sbals(struct zfcp_fsf_req *fsf_req,
        /* split segment up */
        for (addr = start_addr, remaining = total_length; remaining > 0;
             addr += length, remaining -= length) {
-               sbale = zfcp_qdio_sbale_next(fsf_req, sbtype);
+               sbale = zfcp_qdio_sbale_next(adapter, q_req, sbtype);
                if (!sbale) {
-                       atomic_inc(&fsf_req->adapter->qdio_outb_full);
-                       zfcp_qdio_undo_sbals(fsf_req);
+                       atomic_inc(&adapter->qdio_outb_full);
+                       zfcp_qdio_undo_sbals(adapter, q_req);
                        return -EINVAL;
                }
 
@@ -281,29 +289,31 @@ static int zfcp_qdio_fill_sbals(struct zfcp_fsf_req *fsf_req,
  * @max_sbals: upper bound for number of SBALs to be used
  * Returns: number of bytes, or error (negativ)
  */
-int zfcp_qdio_sbals_from_sg(struct zfcp_fsf_req *fsf_req, unsigned long sbtype,
-                           struct scatterlist *sg, int max_sbals)
+int zfcp_qdio_sbals_from_sg(struct zfcp_adapter *adapter,
+                           struct zfcp_queue_req *q_req,
+                           unsigned long sbtype, struct scatterlist *sg,
+                           int max_sbals)
 {
        struct qdio_buffer_element *sbale;
        int retval, bytes = 0;
 
        /* figure out last allowed SBAL */
-       zfcp_qdio_sbal_limit(fsf_req, max_sbals);
+       zfcp_qdio_sbal_limit(adapter, q_req, max_sbals);
 
        /* set storage-block type for this request */
-       sbale = zfcp_qdio_sbale_req(fsf_req);
+       sbale = zfcp_qdio_sbale_req(adapter, q_req);
        sbale->flags |= sbtype;
 
        for (; sg; sg = sg_next(sg)) {
-               retval = zfcp_qdio_fill_sbals(fsf_req, sbtype, sg_virt(sg),
-                                             sg->length);
+               retval = zfcp_qdio_fill_sbals(adapter, q_req, sbtype,
+                                             sg_virt(sg), sg->length);
                if (retval < 0)
                        return retval;
                bytes += sg->length;
        }
 
        /* assume that no other SBALEs are to follow in the same SBAL */
-       sbale = zfcp_qdio_sbale_curr(fsf_req);
+       sbale = zfcp_qdio_sbale_curr(adapter, q_req);
        sbale->flags |= SBAL_FLAGS_LAST_ENTRY;
 
        return bytes;
@@ -314,12 +324,11 @@ int zfcp_qdio_sbals_from_sg(struct zfcp_fsf_req *fsf_req, unsigned long sbtype,
  * @fsf_req: pointer to struct zfcp_fsf_req
  * Returns: 0 on success, error otherwise
  */
-int zfcp_qdio_send(struct zfcp_fsf_req *fsf_req)
+int zfcp_qdio_send(struct zfcp_adapter *adapter, struct zfcp_queue_req *q_req)
 {
-       struct zfcp_adapter *adapter = fsf_req->adapter;
        struct zfcp_qdio_queue *req_q = &adapter->req_q;
-       int first = fsf_req->sbal_first;
-       int count = fsf_req->sbal_number;
+       int first = q_req->sbal_first;
+       int count = q_req->sbal_number;
        int retval;
        unsigned int qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
 
This page took 0.03959 seconds and 5 git commands to generate.