4 * Global definitions for the zfcp device driver.
6 * Copyright IBM Corporation 2002, 2008
12 /*************************** INCLUDES *****************************************/
14 #include <linux/init.h>
15 #include <linux/moduleparam.h>
16 #include <linux/major.h>
17 #include <linux/blkdev.h>
18 #include <linux/delay.h>
19 #include <linux/timer.h>
20 #include <linux/slab.h>
21 #include <linux/mempool.h>
22 #include <linux/syscalls.h>
23 #include <linux/scatterlist.h>
24 #include <linux/ioctl.h>
25 #include <scsi/scsi.h>
26 #include <scsi/scsi_tcq.h>
27 #include <scsi/scsi_cmnd.h>
28 #include <scsi/scsi_device.h>
29 #include <scsi/scsi_host.h>
30 #include <scsi/scsi_transport.h>
31 #include <scsi/scsi_transport_fc.h>
32 #include <asm/ccwdev.h>
34 #include <asm/debug.h>
35 #include <asm/ebcdic.h>
40 /********************* GENERAL DEFINES *********************************/
42 #define REQUEST_LIST_SIZE 128
44 /********************* SCSI SPECIFIC DEFINES *********************************/
45 #define ZFCP_SCSI_ER_TIMEOUT (10*HZ)
47 /********************* CIO/QDIO SPECIFIC DEFINES *****************************/
49 /* Adapter Identification Parameters */
50 #define ZFCP_CONTROL_UNIT_TYPE 0x1731
51 #define ZFCP_CONTROL_UNIT_MODEL 0x03
52 #define ZFCP_DEVICE_TYPE 0x1732
53 #define ZFCP_DEVICE_MODEL 0x03
54 #define ZFCP_DEVICE_MODEL_PRIV 0x04
56 /* DMQ bug workaround: don't use last SBALE */
57 #define ZFCP_MAX_SBALES_PER_SBAL (QDIO_MAX_ELEMENTS_PER_BUFFER - 1)
59 /* index of last SBALE (with respect to DMQ bug workaround) */
60 #define ZFCP_LAST_SBALE_PER_SBAL (ZFCP_MAX_SBALES_PER_SBAL - 1)
62 /* max. number of (data buffer) SBALEs in largest SBAL chain */
63 #define ZFCP_MAX_SBALES_PER_REQ \
64 (FSF_MAX_SBALS_PER_REQ * ZFCP_MAX_SBALES_PER_SBAL - 2)
65 /* request ID + QTCB in SBALE 0 + 1 of first SBAL in chain */
67 #define ZFCP_MAX_SECTORS (ZFCP_MAX_SBALES_PER_REQ * 8)
68 /* max. number of (data buffer) SBALEs in largest SBAL chain
69 multiplied with number of sectors per 4k block */
71 /********************* FSF SPECIFIC DEFINES *********************************/
73 /* ATTENTION: value must not be used by hardware */
74 #define FSF_QTCB_UNSOLICITED_STATUS 0x6305
76 /* timeout value for "default timer" for fsf requests */
77 #define ZFCP_FSF_REQUEST_TIMEOUT (60*HZ)
79 /*************** FIBRE CHANNEL PROTOCOL SPECIFIC DEFINES ********************/
81 /* timeout for name-server lookup (in seconds) */
82 #define ZFCP_NS_GID_PN_TIMEOUT 10
84 /* task attribute values in FCP-2 FCP_CMND IU */
91 /* task management flags in FCP-2 FCP_CMND IU */
92 #define FCP_CLEAR_ACA 0x40
93 #define FCP_TARGET_RESET 0x20
94 #define FCP_LOGICAL_UNIT_RESET 0x10
95 #define FCP_CLEAR_TASK_SET 0x04
96 #define FCP_ABORT_TASK_SET 0x02
98 #define FCP_CDB_LENGTH 16
100 #define ZFCP_DID_MASK 0x00FFFFFF
102 /* FCP(-2) FCP_CMND IU */
104 u64 fcp_lun; /* FCP logical unit number */
105 u8 crn; /* command reference number */
106 u8 reserved0:5; /* reserved */
107 u8 task_attribute:3; /* task attribute */
108 u8 task_management_flags; /* task management flags */
109 u8 add_fcp_cdb_length:6; /* additional FCP_CDB length */
110 u8 rddata:1; /* read data */
111 u8 wddata:1; /* write data */
112 u8 fcp_cdb[FCP_CDB_LENGTH];
113 } __attribute__((packed));
115 /* FCP(-2) FCP_RSP IU */
122 u8 fcp_resid_under:1;
124 u8 fcp_sns_len_valid:1;
125 u8 fcp_rsp_len_valid:1;
133 } __attribute__((packed));
136 #define RSP_CODE_GOOD 0
137 #define RSP_CODE_LENGTH_MISMATCH 1
138 #define RSP_CODE_FIELD_INVALID 2
139 #define RSP_CODE_RO_MISMATCH 3
140 #define RSP_CODE_TASKMAN_UNSUPP 4
141 #define RSP_CODE_TASKMAN_FAILED 5
146 #define LS_PLOGI 0x03
148 struct fcp_rscn_head {
150 u8 page_length; /* always 0x04 */
152 } __attribute__((packed));
154 struct fcp_rscn_element {
159 } __attribute__((packed));
161 #define ZFCP_PORT_ADDRESS 0x0
162 #define ZFCP_AREA_ADDRESS 0x1
163 #define ZFCP_DOMAIN_ADDRESS 0x2
164 #define ZFCP_FABRIC_ADDRESS 0x3
166 #define ZFCP_PORTS_RANGE_PORT 0xFFFFFF
167 #define ZFCP_PORTS_RANGE_AREA 0xFFFF00
168 #define ZFCP_PORTS_RANGE_DOMAIN 0xFF0000
169 #define ZFCP_PORTS_RANGE_FABRIC 0x000000
171 #define ZFCP_NO_PORTS_PER_AREA 0x100
172 #define ZFCP_NO_PORTS_PER_DOMAIN 0x10000
173 #define ZFCP_NO_PORTS_PER_FABRIC 0x1000000
180 } __attribute__((packed));
185 #define R_A_TOV 10 /* seconds */
187 #define ZFCP_LS_RLS 0x0f
188 #define ZFCP_LS_ADISC 0x52
189 #define ZFCP_LS_RPS 0x56
190 #define ZFCP_LS_RSCN 0x61
191 #define ZFCP_LS_RNID 0x78
193 struct zfcp_ls_adisc {
200 } __attribute__ ((packed));
205 #define ZFCP_CT_REVISION 0x01
206 #define ZFCP_CT_DIRECTORY_SERVICE 0xFC
207 #define ZFCP_CT_NAME_SERVER 0x02
208 #define ZFCP_CT_SYNCHRONOUS 0x00
209 #define ZFCP_CT_SCSI_FCP 0x08
210 #define ZFCP_CT_UNABLE_TO_PERFORM_CMD 0x09
211 #define ZFCP_CT_GID_PN 0x0121
212 #define ZFCP_CT_GPN_FT 0x0172
213 #define ZFCP_CT_MAX_SIZE 0x1020
214 #define ZFCP_CT_ACCEPT 0x8002
215 #define ZFCP_CT_REJECT 0x8001
220 #define ZFCP_CT_TIMEOUT (3 * R_A_TOV)
222 /*************** ADAPTER/PORT/UNIT AND FSF_REQ STATUS FLAGS ******************/
225 * Note, the leftmost status byte is common among adapter, port
228 #define ZFCP_COMMON_FLAGS 0xfff00000
230 /* common status bits */
231 #define ZFCP_STATUS_COMMON_REMOVE 0x80000000
232 #define ZFCP_STATUS_COMMON_RUNNING 0x40000000
233 #define ZFCP_STATUS_COMMON_ERP_FAILED 0x20000000
234 #define ZFCP_STATUS_COMMON_UNBLOCKED 0x10000000
235 #define ZFCP_STATUS_COMMON_OPEN 0x04000000
236 #define ZFCP_STATUS_COMMON_ERP_INUSE 0x01000000
237 #define ZFCP_STATUS_COMMON_ACCESS_DENIED 0x00800000
238 #define ZFCP_STATUS_COMMON_ACCESS_BOXED 0x00400000
239 #define ZFCP_STATUS_COMMON_NOESC 0x00200000
242 #define ZFCP_STATUS_ADAPTER_QDIOUP 0x00000002
243 #define ZFCP_STATUS_ADAPTER_XCONFIG_OK 0x00000008
244 #define ZFCP_STATUS_ADAPTER_HOST_CON_INIT 0x00000010
245 #define ZFCP_STATUS_ADAPTER_ERP_THREAD_UP 0x00000020
246 #define ZFCP_STATUS_ADAPTER_ERP_THREAD_KILL 0x00000080
247 #define ZFCP_STATUS_ADAPTER_ERP_PENDING 0x00000100
248 #define ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED 0x00000200
250 /* FC-PH/FC-GS well-known address identifiers for generic services */
251 #define ZFCP_DID_WKA 0xFFFFF0
252 #define ZFCP_DID_MANAGEMENT_SERVICE 0xFFFFFA
253 #define ZFCP_DID_TIME_SERVICE 0xFFFFFB
254 #define ZFCP_DID_DIRECTORY_SERVICE 0xFFFFFC
255 #define ZFCP_DID_ALIAS_SERVICE 0xFFFFF8
256 #define ZFCP_DID_KEY_DISTRIBUTION_SERVICE 0xFFFFF7
258 /* remote port status */
259 #define ZFCP_STATUS_PORT_PHYS_OPEN 0x00000001
260 #define ZFCP_STATUS_PORT_DID_DID 0x00000002
261 #define ZFCP_STATUS_PORT_PHYS_CLOSING 0x00000004
262 #define ZFCP_STATUS_PORT_NO_WWPN 0x00000008
263 #define ZFCP_STATUS_PORT_INVALID_WWPN 0x00000020
265 /* well known address (WKA) port status*/
266 enum zfcp_wka_status {
267 ZFCP_WKA_PORT_OFFLINE,
268 ZFCP_WKA_PORT_CLOSING,
269 ZFCP_WKA_PORT_OPENING,
270 ZFCP_WKA_PORT_ONLINE,
273 /* logical unit status */
274 #define ZFCP_STATUS_UNIT_SHARED 0x00000004
275 #define ZFCP_STATUS_UNIT_READONLY 0x00000008
276 #define ZFCP_STATUS_UNIT_REGISTERED 0x00000010
277 #define ZFCP_STATUS_UNIT_SCSI_WORK_PENDING 0x00000020
279 /* FSF request status (this does not have a common part) */
280 #define ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT 0x00000002
281 #define ZFCP_STATUS_FSFREQ_COMPLETED 0x00000004
282 #define ZFCP_STATUS_FSFREQ_ERROR 0x00000008
283 #define ZFCP_STATUS_FSFREQ_CLEANUP 0x00000010
284 #define ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED 0x00000040
285 #define ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED 0x00000080
286 #define ZFCP_STATUS_FSFREQ_ABORTED 0x00000100
287 #define ZFCP_STATUS_FSFREQ_TMFUNCFAILED 0x00000200
288 #define ZFCP_STATUS_FSFREQ_TMFUNCNOTSUPP 0x00000400
289 #define ZFCP_STATUS_FSFREQ_RETRY 0x00000800
290 #define ZFCP_STATUS_FSFREQ_DISMISSED 0x00001000
292 /************************* STRUCTURE DEFINITIONS *****************************/
296 /* holds various memory pools of an adapter */
297 struct zfcp_adapter_mempool {
298 mempool_t *fsf_req_erp;
299 mempool_t *fsf_req_scsi;
300 mempool_t *fsf_req_abort;
301 mempool_t *fsf_req_status_read;
302 mempool_t *data_status_read;
303 mempool_t *data_gid_pn;
312 u8 gs_type; // 0xFC Directory Service
313 u8 gs_subtype; // 0x02 Name Server
314 u8 options; // 0x00 single bidirectional exchange
316 u16 cmd_rsp_code; // 0x0121 GID_PN, or 0x0100 GA_NXT
317 u16 max_res_size; // <= (4096 - 16) / 4
322 } __attribute__ ((packed));
324 /* nameserver request CT_IU -- for requests where
325 * a port name is required */
326 struct ct_iu_gid_pn_req {
327 struct ct_hdr header;
329 } __attribute__ ((packed));
331 /* FS_ACC IU and data unit for GID_PN nameserver request */
332 struct ct_iu_gid_pn_resp {
333 struct ct_hdr header;
335 } __attribute__ ((packed));
338 * struct zfcp_send_ct - used to pass parameters to function zfcp_fsf_send_ct
339 * @wka_port: port where the request is sent to
340 * @req: scatter-gather list for request
341 * @resp: scatter-gather list for response
342 * @req_count: number of elements in request scatter-gather list
343 * @resp_count: number of elements in response scatter-gather list
344 * @handler: handler function (called for response to the request)
345 * @handler_data: data passed to handler function
346 * @timeout: FSF timeout for this request
347 * @completion: completion for synchronization purposes
348 * @status: used to pass error status to calling function
350 struct zfcp_send_ct {
351 struct zfcp_wka_port *wka_port;
352 struct scatterlist *req;
353 struct scatterlist *resp;
354 unsigned int req_count;
355 unsigned int resp_count;
356 void (*handler)(unsigned long);
357 unsigned long handler_data;
359 struct completion *completion;
363 /* used for name server requests in error recovery */
364 struct zfcp_gid_pn_data {
365 struct zfcp_send_ct ct;
366 struct scatterlist req;
367 struct scatterlist resp;
368 struct ct_iu_gid_pn_req ct_iu_req;
369 struct ct_iu_gid_pn_resp ct_iu_resp;
370 struct zfcp_port *port;
374 * struct zfcp_send_els - used to pass parameters to function zfcp_fsf_send_els
375 * @adapter: adapter where request is sent from
376 * @port: port where ELS is destinated (port reference count has to be increased)
377 * @d_id: destiniation id of port where request is sent to
378 * @req: scatter-gather list for request
379 * @resp: scatter-gather list for response
380 * @req_count: number of elements in request scatter-gather list
381 * @resp_count: number of elements in response scatter-gather list
382 * @handler: handler function (called for response to the request)
383 * @handler_data: data passed to handler function
384 * @completion: completion for synchronization purposes
385 * @ls_code: hex code of ELS command
386 * @status: used to pass error status to calling function
388 struct zfcp_send_els {
389 struct zfcp_adapter *adapter;
390 struct zfcp_port *port;
392 struct scatterlist *req;
393 struct scatterlist *resp;
394 unsigned int req_count;
395 unsigned int resp_count;
396 void (*handler)(unsigned long);
397 unsigned long handler_data;
398 struct completion *completion;
403 struct zfcp_wka_port {
404 struct zfcp_adapter *adapter;
405 wait_queue_head_t completion_wq;
406 enum zfcp_wka_status status;
411 struct delayed_work work;
414 struct zfcp_qdio_queue {
415 struct qdio_buffer *sbal[QDIO_MAX_BUFFERS_PER_Q];
416 u8 first; /* index of next free bfr in queue */
417 atomic_t count; /* number of free buffers in queue */
420 struct zfcp_erp_action {
421 struct list_head list;
422 int action; /* requested action code */
423 struct zfcp_adapter *adapter; /* device which should be recovered */
424 struct zfcp_port *port;
425 struct zfcp_unit *unit;
426 u32 status; /* recovery status */
427 u32 step; /* active step of this erp action */
428 struct zfcp_fsf_req *fsf_req; /* fsf request currently pending
430 struct timer_list timer;
433 struct fsf_latency_record {
439 struct latency_cont {
440 struct fsf_latency_record channel;
441 struct fsf_latency_record fabric;
445 struct zfcp_latencies {
446 struct latency_cont read;
447 struct latency_cont write;
448 struct latency_cont cmd;
452 struct zfcp_adapter {
453 struct list_head list; /* list of adapters */
454 atomic_t refcount; /* reference count */
455 wait_queue_head_t remove_wq; /* can be used to wait for
456 refcount drop to zero */
457 u64 peer_wwnn; /* P2P peer WWNN */
458 u64 peer_wwpn; /* P2P peer WWPN */
459 u32 peer_d_id; /* P2P peer D_ID */
460 struct ccw_device *ccw_device; /* S/390 ccw device */
461 u32 hydra_version; /* Hydra version */
463 u32 adapter_features; /* FCP channel features */
464 u32 connection_features; /* host connection features */
465 u32 hardware_version; /* of FCP channel */
466 u16 timer_ticks; /* time int for a tick */
467 struct Scsi_Host *scsi_host; /* Pointer to mid-layer */
468 struct list_head port_list_head; /* remote port list */
469 unsigned long req_no; /* unique FSF req number */
470 struct list_head *req_list; /* list of pending reqs */
471 spinlock_t req_list_lock; /* request list lock */
472 struct zfcp_qdio_queue req_q; /* request queue */
473 spinlock_t req_q_lock; /* for operations on queue */
474 int req_q_pci_batch; /* SBALs since PCI indication
476 u32 fsf_req_seq_no; /* FSF cmnd seq number */
477 wait_queue_head_t request_wq; /* can be used to wait for
478 more avaliable SBALs */
479 struct zfcp_qdio_queue resp_q; /* response queue */
480 rwlock_t abort_lock; /* Protects against SCSI
483 atomic_t stat_miss; /* # missing status reads*/
484 struct work_struct stat_work;
485 atomic_t status; /* status of this adapter */
486 struct list_head erp_ready_head; /* error recovery for this
488 struct list_head erp_running_head;
490 struct semaphore erp_ready_sem;
491 wait_queue_head_t erp_thread_wqh;
492 wait_queue_head_t erp_done_wqh;
493 struct zfcp_erp_action erp_action; /* pending error recovery */
494 atomic_t erp_counter;
495 u32 erp_total_count; /* total nr of enqueued erp
497 u32 erp_low_mem_count; /* nr of erp actions waiting
499 struct zfcp_wka_port nsp; /* adapter's nameserver */
500 debug_info_t *rec_dbf;
501 debug_info_t *hba_dbf;
502 debug_info_t *san_dbf; /* debug feature areas */
503 debug_info_t *scsi_dbf;
504 spinlock_t rec_dbf_lock;
505 spinlock_t hba_dbf_lock;
506 spinlock_t san_dbf_lock;
507 spinlock_t scsi_dbf_lock;
508 struct zfcp_rec_dbf_record rec_dbf_buf;
509 struct zfcp_hba_dbf_record hba_dbf_buf;
510 struct zfcp_san_dbf_record san_dbf_buf;
511 struct zfcp_scsi_dbf_record scsi_dbf_buf;
512 struct zfcp_adapter_mempool pool; /* Adapter memory pools */
513 struct qdio_initialize qdio_init_data; /* for qdio_establish */
514 struct fc_host_statistics *fc_stats;
515 struct fsf_qtcb_bottom_port *stats_reset_data;
516 unsigned long stats_reset;
517 struct work_struct scan_work;
518 atomic_t qdio_outb_full; /* queue full incidents */
522 struct device sysfs_device; /* sysfs device */
523 struct fc_rport *rport; /* rport of fc transport class */
524 struct list_head list; /* list of remote ports */
525 atomic_t refcount; /* reference count */
526 wait_queue_head_t remove_wq; /* can be used to wait for
527 refcount drop to zero */
528 struct zfcp_adapter *adapter; /* adapter used to access port */
529 struct list_head unit_list_head; /* head of logical unit list */
530 atomic_t status; /* status of this remote port */
531 u64 wwnn; /* WWNN if known */
534 u32 handle; /* handle assigned by FSF */
535 struct zfcp_erp_action erp_action; /* pending error recovery */
536 atomic_t erp_counter;
538 u32 supported_classes;
539 struct work_struct gid_pn_work;
543 struct device sysfs_device; /* sysfs device */
544 struct list_head list; /* list of logical units */
545 atomic_t refcount; /* reference count */
546 wait_queue_head_t remove_wq; /* can be used to wait for
547 refcount drop to zero */
548 struct zfcp_port *port; /* remote port of unit */
549 atomic_t status; /* status of this logical unit */
550 u64 fcp_lun; /* own FCP_LUN */
551 u32 handle; /* handle assigned by FSF */
552 struct scsi_device *device; /* scsi device struct pointer */
553 struct zfcp_erp_action erp_action; /* pending error recovery */
554 atomic_t erp_counter;
555 struct zfcp_latencies latencies;
559 struct zfcp_fsf_req {
560 struct list_head list; /* list of FSF requests */
561 unsigned long req_id; /* unique request ID */
562 struct zfcp_adapter *adapter; /* adapter request belongs to */
563 u8 sbal_number; /* nr of SBALs free for use */
564 u8 sbal_first; /* first SBAL for this request */
565 u8 sbal_last; /* last SBAL for this request */
566 u8 sbal_limit; /* last possible SBAL for
568 u8 sbale_curr; /* current SBALE during creation
570 u8 sbal_response; /* SBAL used in interrupt */
571 wait_queue_head_t completion_wq; /* can be used by a routine
572 to wait for completion */
573 u32 status; /* status of this request */
574 u32 fsf_command; /* FSF Command copy */
575 struct fsf_qtcb *qtcb; /* address of associated QTCB */
576 u32 seq_no; /* Sequence number of request */
577 void *data; /* private data of request */
578 struct timer_list timer; /* used for erp or scsi er */
579 struct zfcp_erp_action *erp_action; /* used if this request is
580 issued on behalf of erp */
581 mempool_t *pool; /* used if request was alloacted
582 from emergency pool */
583 unsigned long long issued; /* request sent time (STCK) */
584 struct zfcp_unit *unit;
585 void (*handler)(struct zfcp_fsf_req *);
590 struct scsi_host_template scsi_host_template;
591 struct scsi_transport_template *scsi_transport_template;
592 struct list_head adapter_list_head; /* head of adapter list */
593 rwlock_t config_lock; /* serialises changes
596 struct semaphore config_sema; /* serialises configuration
598 atomic_t loglevel; /* current loglevel */
599 char init_busid[BUS_ID_SIZE];
602 struct kmem_cache *fsf_req_qtcb_cache;
603 struct kmem_cache *sr_buffer_cache;
604 struct kmem_cache *gid_pn_cache;
605 struct workqueue_struct *work_queue;
608 /* struct used by memory pools for fsf_requests */
609 struct zfcp_fsf_req_qtcb {
610 struct zfcp_fsf_req fsf_req;
611 struct fsf_qtcb qtcb;
614 /********************** ZFCP SPECIFIC DEFINES ********************************/
616 #define ZFCP_REQ_AUTO_CLEANUP 0x00000002
617 #define ZFCP_REQ_NO_QTCB 0x00000008
619 #define ZFCP_SET 0x00000100
620 #define ZFCP_CLEAR 0x00000200
622 #define zfcp_get_busid_by_adapter(adapter) (adapter->ccw_device->dev.bus_id)
625 * Helper functions for request ID management.
627 static inline int zfcp_reqlist_hash(unsigned long req_id)
629 return req_id % REQUEST_LIST_SIZE;
632 static inline void zfcp_reqlist_remove(struct zfcp_adapter *adapter,
633 struct zfcp_fsf_req *fsf_req)
635 list_del(&fsf_req->list);
638 static inline struct zfcp_fsf_req *
639 zfcp_reqlist_find(struct zfcp_adapter *adapter, unsigned long req_id)
641 struct zfcp_fsf_req *request;
644 idx = zfcp_reqlist_hash(req_id);
645 list_for_each_entry(request, &adapter->req_list[idx], list)
646 if (request->req_id == req_id)
651 static inline struct zfcp_fsf_req *
652 zfcp_reqlist_find_safe(struct zfcp_adapter *adapter, struct zfcp_fsf_req *req)
654 struct zfcp_fsf_req *request;
657 for (idx = 0; idx < REQUEST_LIST_SIZE; idx++) {
658 list_for_each_entry(request, &adapter->req_list[idx], list)
666 * functions needed for reference/usage counting
670 zfcp_unit_get(struct zfcp_unit *unit)
672 atomic_inc(&unit->refcount);
676 zfcp_unit_put(struct zfcp_unit *unit)
678 if (atomic_dec_return(&unit->refcount) == 0)
679 wake_up(&unit->remove_wq);
683 zfcp_port_get(struct zfcp_port *port)
685 atomic_inc(&port->refcount);
689 zfcp_port_put(struct zfcp_port *port)
691 if (atomic_dec_return(&port->refcount) == 0)
692 wake_up(&port->remove_wq);
696 zfcp_adapter_get(struct zfcp_adapter *adapter)
698 atomic_inc(&adapter->refcount);
702 zfcp_adapter_put(struct zfcp_adapter *adapter)
704 if (atomic_dec_return(&adapter->refcount) == 0)
705 wake_up(&adapter->remove_wq);
708 #endif /* ZFCP_DEF_H */