3 * linux/drivers/s390/scsi/zfcp_fsf.c
5 * FCP adapter driver for IBM eServer zSeries
7 * (C) Copyright IBM Corp. 2002, 2004
9 * Author(s): Martin Peschke <mpeschke@de.ibm.com>
10 * Raimund Schroeder <raimund.schroeder@de.ibm.com>
13 * Stefan Bader <stefan.bader@de.ibm.com>
14 * Heiko Carstens <heiko.carstens@de.ibm.com>
15 * Andreas Herrmann <aherrman@de.ibm.com>
16 * Volker Sameske <sameske@de.ibm.com>
18 * This program is free software; you can redistribute it and/or modify
19 * it under the terms of the GNU General Public License as published by
20 * the Free Software Foundation; either version 2, or (at your option)
23 * This program is distributed in the hope that it will be useful,
24 * but WITHOUT ANY WARRANTY; without even the implied warranty of
25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
26 * GNU General Public License for more details.
28 * You should have received a copy of the GNU General Public License
29 * along with this program; if not, write to the Free Software
30 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
35 static int zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req
*);
36 static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req
*);
37 static int zfcp_fsf_open_port_handler(struct zfcp_fsf_req
*);
38 static int zfcp_fsf_close_port_handler(struct zfcp_fsf_req
*);
39 static int zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req
*);
40 static int zfcp_fsf_open_unit_handler(struct zfcp_fsf_req
*);
41 static int zfcp_fsf_close_unit_handler(struct zfcp_fsf_req
*);
42 static int zfcp_fsf_send_fcp_command_handler(struct zfcp_fsf_req
*);
43 static int zfcp_fsf_send_fcp_command_task_handler(struct zfcp_fsf_req
*);
44 static int zfcp_fsf_send_fcp_command_task_management_handler(
45 struct zfcp_fsf_req
*);
46 static int zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req
*);
47 static int zfcp_fsf_status_read_handler(struct zfcp_fsf_req
*);
48 static int zfcp_fsf_send_ct_handler(struct zfcp_fsf_req
*);
49 static int zfcp_fsf_send_els_handler(struct zfcp_fsf_req
*);
50 static int zfcp_fsf_control_file_handler(struct zfcp_fsf_req
*);
51 static inline int zfcp_fsf_req_sbal_check(
52 unsigned long *, struct zfcp_qdio_queue
*, int);
53 static inline int zfcp_use_one_sbal(
54 struct scatterlist
*, int, struct scatterlist
*, int);
55 static struct zfcp_fsf_req
*zfcp_fsf_req_alloc(mempool_t
*, int);
56 static int zfcp_fsf_req_send(struct zfcp_fsf_req
*, struct timer_list
*);
57 static int zfcp_fsf_protstatus_eval(struct zfcp_fsf_req
*);
58 static int zfcp_fsf_fsfstatus_eval(struct zfcp_fsf_req
*);
59 static int zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req
*);
60 static void zfcp_fsf_link_down_info_eval(struct zfcp_adapter
*,
61 struct fsf_link_down_info
*);
62 static int zfcp_fsf_req_dispatch(struct zfcp_fsf_req
*);
63 static void zfcp_fsf_req_dismiss(struct zfcp_fsf_req
*);
65 /* association between FSF command and FSF QTCB type */
66 static u32 fsf_qtcb_type
[] = {
67 [FSF_QTCB_FCP_CMND
] = FSF_IO_COMMAND
,
68 [FSF_QTCB_ABORT_FCP_CMND
] = FSF_SUPPORT_COMMAND
,
69 [FSF_QTCB_OPEN_PORT_WITH_DID
] = FSF_SUPPORT_COMMAND
,
70 [FSF_QTCB_OPEN_LUN
] = FSF_SUPPORT_COMMAND
,
71 [FSF_QTCB_CLOSE_LUN
] = FSF_SUPPORT_COMMAND
,
72 [FSF_QTCB_CLOSE_PORT
] = FSF_SUPPORT_COMMAND
,
73 [FSF_QTCB_CLOSE_PHYSICAL_PORT
] = FSF_SUPPORT_COMMAND
,
74 [FSF_QTCB_SEND_ELS
] = FSF_SUPPORT_COMMAND
,
75 [FSF_QTCB_SEND_GENERIC
] = FSF_SUPPORT_COMMAND
,
76 [FSF_QTCB_EXCHANGE_CONFIG_DATA
] = FSF_CONFIG_COMMAND
,
77 [FSF_QTCB_EXCHANGE_PORT_DATA
] = FSF_PORT_COMMAND
,
78 [FSF_QTCB_DOWNLOAD_CONTROL_FILE
] = FSF_SUPPORT_COMMAND
,
79 [FSF_QTCB_UPLOAD_CONTROL_FILE
] = FSF_SUPPORT_COMMAND
82 static const char zfcp_act_subtable_type
[5][8] = {
83 "unknown", "OS", "WWPN", "DID", "LUN"
86 /****************************************************************/
87 /*************** FSF related Functions *************************/
88 /****************************************************************/
90 #define ZFCP_LOG_AREA ZFCP_LOG_AREA_FSF
93 * function: zfcp_fsf_req_alloc
95 * purpose: Obtains an fsf_req and potentially a qtcb (for all but
96 * unsolicited requests) via helper functions
97 * Does some initial fsf request set-up.
99 * returns: pointer to allocated fsf_req if successfull
105 static struct zfcp_fsf_req
*
106 zfcp_fsf_req_alloc(mempool_t
*pool
, int req_flags
)
110 struct zfcp_fsf_req
*fsf_req
= NULL
;
112 if (req_flags
& ZFCP_REQ_NO_QTCB
)
113 size
= sizeof(struct zfcp_fsf_req
);
115 size
= sizeof(struct zfcp_fsf_req_pool_element
);
117 if (likely(pool
!= NULL
))
118 ptr
= mempool_alloc(pool
, GFP_ATOMIC
);
120 ptr
= kmalloc(size
, GFP_ATOMIC
);
122 if (unlikely(NULL
== ptr
))
125 memset(ptr
, 0, size
);
127 if (req_flags
& ZFCP_REQ_NO_QTCB
) {
128 fsf_req
= (struct zfcp_fsf_req
*) ptr
;
130 fsf_req
= &((struct zfcp_fsf_req_pool_element
*) ptr
)->fsf_req
;
132 &((struct zfcp_fsf_req_pool_element
*) ptr
)->qtcb
;
135 fsf_req
->pool
= pool
;
142 * function: zfcp_fsf_req_free
144 * purpose: Frees the memory of an fsf_req (and potentially a qtcb) or
145 * returns it into the pool via helper functions.
152 zfcp_fsf_req_free(struct zfcp_fsf_req
*fsf_req
)
154 if (likely(fsf_req
->pool
!= NULL
))
155 mempool_free(fsf_req
, fsf_req
->pool
);
167 * note: qdio queues shall be down (no ongoing inbound processing)
170 zfcp_fsf_req_dismiss_all(struct zfcp_adapter
*adapter
)
172 struct zfcp_fsf_req
*fsf_req
, *tmp
;
174 LIST_HEAD(remove_queue
);
176 spin_lock_irqsave(&adapter
->fsf_req_list_lock
, flags
);
177 list_splice_init(&adapter
->fsf_req_list_head
, &remove_queue
);
178 atomic_set(&adapter
->fsf_reqs_active
, 0);
179 spin_unlock_irqrestore(&adapter
->fsf_req_list_lock
, flags
);
181 list_for_each_entry_safe(fsf_req
, tmp
, &remove_queue
, list
) {
182 list_del(&fsf_req
->list
);
183 zfcp_fsf_req_dismiss(fsf_req
);
197 zfcp_fsf_req_dismiss(struct zfcp_fsf_req
*fsf_req
)
199 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_DISMISSED
;
200 zfcp_fsf_req_complete(fsf_req
);
204 * function: zfcp_fsf_req_complete
206 * purpose: Updates active counts and timers for openfcp-reqs
207 * May cleanup request after req_eval returns
209 * returns: 0 - success
215 zfcp_fsf_req_complete(struct zfcp_fsf_req
*fsf_req
)
220 if (unlikely(fsf_req
->fsf_command
== FSF_QTCB_UNSOLICITED_STATUS
)) {
221 ZFCP_LOG_DEBUG("Status read response received\n");
223 * Note: all cleanup handling is done in the callchain of
224 * the function call-chain below.
226 zfcp_fsf_status_read_handler(fsf_req
);
229 zfcp_fsf_protstatus_eval(fsf_req
);
232 * fsf_req may be deleted due to waking up functions, so
233 * cleanup is saved here and used later
235 if (likely(fsf_req
->status
& ZFCP_STATUS_FSFREQ_CLEANUP
))
240 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_COMPLETED
;
242 /* cleanup request if requested by initiator */
243 if (likely(cleanup
)) {
244 ZFCP_LOG_TRACE("removing FSF request %p\n", fsf_req
);
246 * lock must not be held here since it will be
247 * grabed by the called routine, too
249 zfcp_fsf_req_free(fsf_req
);
251 /* notify initiator waiting for the requests completion */
252 ZFCP_LOG_TRACE("waking initiator of FSF request %p\n",fsf_req
);
254 * FIXME: Race! We must not access fsf_req here as it might have been
255 * cleaned up already due to the set ZFCP_STATUS_FSFREQ_COMPLETED
256 * flag. It's an improbable case. But, we have the same paranoia for
257 * the cleanup flag already.
258 * Might better be handled using complete()?
259 * (setting the flag and doing wakeup ought to be atomic
260 * with regard to checking the flag as long as waitqueue is
261 * part of the to be released structure)
263 wake_up(&fsf_req
->completion_wq
);
271 * function: zfcp_fsf_protstatus_eval
273 * purpose: evaluates the QTCB of the finished FSF request
274 * and initiates appropriate actions
275 * (usually calling FSF command specific handlers)
284 zfcp_fsf_protstatus_eval(struct zfcp_fsf_req
*fsf_req
)
287 struct zfcp_adapter
*adapter
= fsf_req
->adapter
;
288 struct fsf_qtcb
*qtcb
= fsf_req
->qtcb
;
289 union fsf_prot_status_qual
*prot_status_qual
=
290 &qtcb
->prefix
.prot_status_qual
;
292 zfcp_hba_dbf_event_fsf_response(fsf_req
);
294 if (fsf_req
->status
& ZFCP_STATUS_FSFREQ_DISMISSED
) {
295 ZFCP_LOG_DEBUG("fsf_req 0x%lx has been dismissed\n",
296 (unsigned long) fsf_req
);
297 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
|
298 ZFCP_STATUS_FSFREQ_RETRY
; /* only for SCSI cmnds. */
299 goto skip_protstatus
;
302 /* log additional information provided by FSF (if any) */
303 if (unlikely(qtcb
->header
.log_length
)) {
304 /* do not trust them ;-) */
305 if (qtcb
->header
.log_start
> sizeof(struct fsf_qtcb
)) {
307 ("bug: ULP (FSF logging) log data starts "
308 "beyond end of packet header. Ignored. "
309 "(start=%i, size=%li)\n",
310 qtcb
->header
.log_start
,
311 sizeof(struct fsf_qtcb
));
314 if ((size_t) (qtcb
->header
.log_start
+ qtcb
->header
.log_length
)
315 > sizeof(struct fsf_qtcb
)) {
316 ZFCP_LOG_NORMAL("bug: ULP (FSF logging) log data ends "
317 "beyond end of packet header. Ignored. "
318 "(start=%i, length=%i, size=%li)\n",
319 qtcb
->header
.log_start
,
320 qtcb
->header
.log_length
,
321 sizeof(struct fsf_qtcb
));
324 ZFCP_LOG_TRACE("ULP log data: \n");
325 ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_TRACE
,
326 (char *) qtcb
+ qtcb
->header
.log_start
,
327 qtcb
->header
.log_length
);
331 /* evaluate FSF Protocol Status */
332 switch (qtcb
->prefix
.prot_status
) {
335 case FSF_PROT_FSF_STATUS_PRESENTED
:
338 case FSF_PROT_QTCB_VERSION_ERROR
:
339 ZFCP_LOG_NORMAL("error: The adapter %s contains "
340 "microcode of version 0x%x, the device driver "
341 "only supports 0x%x. Aborting.\n",
342 zfcp_get_busid_by_adapter(adapter
),
343 prot_status_qual
->version_error
.fsf_version
,
345 zfcp_erp_adapter_shutdown(adapter
, 0);
346 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
349 case FSF_PROT_SEQ_NUMB_ERROR
:
350 ZFCP_LOG_NORMAL("bug: Sequence number mismatch between "
351 "driver (0x%x) and adapter %s (0x%x). "
352 "Restarting all operations on this adapter.\n",
353 qtcb
->prefix
.req_seq_no
,
354 zfcp_get_busid_by_adapter(adapter
),
355 prot_status_qual
->sequence_error
.exp_req_seq_no
);
356 zfcp_erp_adapter_reopen(adapter
, 0);
357 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_RETRY
;
358 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
361 case FSF_PROT_UNSUPP_QTCB_TYPE
:
362 ZFCP_LOG_NORMAL("error: Packet header type used by the "
363 "device driver is incompatible with "
364 "that used on adapter %s. "
365 "Stopping all operations on this adapter.\n",
366 zfcp_get_busid_by_adapter(adapter
));
367 zfcp_erp_adapter_shutdown(adapter
, 0);
368 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
371 case FSF_PROT_HOST_CONNECTION_INITIALIZING
:
372 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
373 atomic_set_mask(ZFCP_STATUS_ADAPTER_HOST_CON_INIT
,
377 case FSF_PROT_DUPLICATE_REQUEST_ID
:
378 ZFCP_LOG_NORMAL("bug: The request identifier 0x%Lx "
379 "to the adapter %s is ambiguous. "
380 "Stopping all operations on this adapter.\n",
381 *(unsigned long long*)
382 (&qtcb
->bottom
.support
.req_handle
),
383 zfcp_get_busid_by_adapter(adapter
));
384 zfcp_erp_adapter_shutdown(adapter
, 0);
385 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
388 case FSF_PROT_LINK_DOWN
:
389 zfcp_fsf_link_down_info_eval(adapter
,
390 &prot_status_qual
->link_down_info
);
391 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
394 case FSF_PROT_REEST_QUEUE
:
395 ZFCP_LOG_NORMAL("The local link to adapter with "
396 "%s was re-plugged. "
397 "Re-starting operations on this adapter.\n",
398 zfcp_get_busid_by_adapter(adapter
));
399 /* All ports should be marked as ready to run again */
400 zfcp_erp_modify_adapter_status(adapter
,
401 ZFCP_STATUS_COMMON_RUNNING
,
403 zfcp_erp_adapter_reopen(adapter
,
404 ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED
405 | ZFCP_STATUS_COMMON_ERP_FAILED
);
406 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
409 case FSF_PROT_ERROR_STATE
:
410 ZFCP_LOG_NORMAL("error: The adapter %s "
411 "has entered the error state. "
412 "Restarting all operations on this "
414 zfcp_get_busid_by_adapter(adapter
));
415 zfcp_erp_adapter_reopen(adapter
, 0);
416 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_RETRY
;
417 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
421 ZFCP_LOG_NORMAL("bug: Transfer protocol status information "
422 "provided by the adapter %s "
423 "is not compatible with the device driver. "
424 "Stopping all operations on this adapter. "
425 "(debug info 0x%x).\n",
426 zfcp_get_busid_by_adapter(adapter
),
427 qtcb
->prefix
.prot_status
);
428 zfcp_erp_adapter_shutdown(adapter
, 0);
429 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
434 * always call specific handlers to give them a chance to do
435 * something meaningful even in error cases
437 zfcp_fsf_fsfstatus_eval(fsf_req
);
442 * function: zfcp_fsf_fsfstatus_eval
444 * purpose: evaluates FSF status of completed FSF request
445 * and acts accordingly
450 zfcp_fsf_fsfstatus_eval(struct zfcp_fsf_req
*fsf_req
)
454 if (unlikely(fsf_req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)) {
458 /* evaluate FSF Status */
459 switch (fsf_req
->qtcb
->header
.fsf_status
) {
460 case FSF_UNKNOWN_COMMAND
:
461 ZFCP_LOG_NORMAL("bug: Command issued by the device driver is "
462 "not known by the adapter %s "
463 "Stopping all operations on this adapter. "
464 "(debug info 0x%x).\n",
465 zfcp_get_busid_by_adapter(fsf_req
->adapter
),
466 fsf_req
->qtcb
->header
.fsf_command
);
467 zfcp_erp_adapter_shutdown(fsf_req
->adapter
, 0);
468 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
471 case FSF_FCP_RSP_AVAILABLE
:
472 ZFCP_LOG_DEBUG("FCP Sense data will be presented to the "
476 case FSF_ADAPTER_STATUS_AVAILABLE
:
477 zfcp_fsf_fsfstatus_qual_eval(fsf_req
);
483 * always call specific handlers to give them a chance to do
484 * something meaningful even in error cases
486 zfcp_fsf_req_dispatch(fsf_req
);
492 * function: zfcp_fsf_fsfstatus_qual_eval
494 * purpose: evaluates FSF status-qualifier of completed FSF request
495 * and acts accordingly
500 zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req
*fsf_req
)
504 switch (fsf_req
->qtcb
->header
.fsf_status_qual
.word
[0]) {
505 case FSF_SQ_FCP_RSP_AVAILABLE
:
507 case FSF_SQ_RETRY_IF_POSSIBLE
:
508 /* The SCSI-stack may now issue retries or escalate */
509 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
511 case FSF_SQ_COMMAND_ABORTED
:
512 /* Carry the aborted state on to upper layer */
513 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ABORTED
;
514 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
516 case FSF_SQ_NO_RECOM
:
517 ZFCP_LOG_NORMAL("bug: No recommendation could be given for a"
518 "problem on the adapter %s "
519 "Stopping all operations on this adapter. ",
520 zfcp_get_busid_by_adapter(fsf_req
->adapter
));
521 zfcp_erp_adapter_shutdown(fsf_req
->adapter
, 0);
522 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
524 case FSF_SQ_ULP_PROGRAMMING_ERROR
:
525 ZFCP_LOG_NORMAL("error: not enough SBALs for data transfer "
527 zfcp_get_busid_by_adapter(fsf_req
->adapter
));
528 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
530 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE
:
531 case FSF_SQ_NO_RETRY_POSSIBLE
:
532 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED
:
533 /* dealt with in the respective functions */
536 ZFCP_LOG_NORMAL("bug: Additional status info could "
537 "not be interpreted properly.\n");
538 ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_NORMAL
,
539 (char *) &fsf_req
->qtcb
->header
.fsf_status_qual
,
540 sizeof (union fsf_status_qual
));
541 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
549 * zfcp_fsf_link_down_info_eval - evaluate link down information block
552 zfcp_fsf_link_down_info_eval(struct zfcp_adapter
*adapter
,
553 struct fsf_link_down_info
*link_down
)
555 if (atomic_test_mask(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED
,
559 atomic_set_mask(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED
, &adapter
->status
);
561 if (link_down
== NULL
) {
562 zfcp_erp_adapter_reopen(adapter
, 0);
566 switch (link_down
->error_code
) {
567 case FSF_PSQ_LINK_NO_LIGHT
:
568 ZFCP_LOG_NORMAL("The local link to adapter %s is down "
569 "(no light detected)\n",
570 zfcp_get_busid_by_adapter(adapter
));
572 case FSF_PSQ_LINK_WRAP_PLUG
:
573 ZFCP_LOG_NORMAL("The local link to adapter %s is down "
574 "(wrap plug detected)\n",
575 zfcp_get_busid_by_adapter(adapter
));
577 case FSF_PSQ_LINK_NO_FCP
:
578 ZFCP_LOG_NORMAL("The local link to adapter %s is down "
579 "(adjacent node on link does not support FCP)\n",
580 zfcp_get_busid_by_adapter(adapter
));
582 case FSF_PSQ_LINK_FIRMWARE_UPDATE
:
583 ZFCP_LOG_NORMAL("The local link to adapter %s is down "
584 "(firmware update in progress)\n",
585 zfcp_get_busid_by_adapter(adapter
));
587 case FSF_PSQ_LINK_INVALID_WWPN
:
588 ZFCP_LOG_NORMAL("The local link to adapter %s is down "
589 "(duplicate or invalid WWPN detected)\n",
590 zfcp_get_busid_by_adapter(adapter
));
592 case FSF_PSQ_LINK_NO_NPIV_SUPPORT
:
593 ZFCP_LOG_NORMAL("The local link to adapter %s is down "
594 "(no support for NPIV by Fabric)\n",
595 zfcp_get_busid_by_adapter(adapter
));
597 case FSF_PSQ_LINK_NO_FCP_RESOURCES
:
598 ZFCP_LOG_NORMAL("The local link to adapter %s is down "
599 "(out of resource in FCP daughtercard)\n",
600 zfcp_get_busid_by_adapter(adapter
));
602 case FSF_PSQ_LINK_NO_FABRIC_RESOURCES
:
603 ZFCP_LOG_NORMAL("The local link to adapter %s is down "
604 "(out of resource in Fabric)\n",
605 zfcp_get_busid_by_adapter(adapter
));
607 case FSF_PSQ_LINK_FABRIC_LOGIN_UNABLE
:
608 ZFCP_LOG_NORMAL("The local link to adapter %s is down "
609 "(unable to Fabric login)\n",
610 zfcp_get_busid_by_adapter(adapter
));
612 case FSF_PSQ_LINK_WWPN_ASSIGNMENT_CORRUPTED
:
613 ZFCP_LOG_NORMAL("WWPN assignment file corrupted on adapter %s\n",
614 zfcp_get_busid_by_adapter(adapter
));
616 case FSF_PSQ_LINK_MODE_TABLE_CURRUPTED
:
617 ZFCP_LOG_NORMAL("Mode table corrupted on adapter %s\n",
618 zfcp_get_busid_by_adapter(adapter
));
620 case FSF_PSQ_LINK_NO_WWPN_ASSIGNMENT
:
621 ZFCP_LOG_NORMAL("No WWPN for assignment table on adapter %s\n",
622 zfcp_get_busid_by_adapter(adapter
));
625 ZFCP_LOG_NORMAL("The local link to adapter %s is down "
626 "(warning: unknown reason code %d)\n",
627 zfcp_get_busid_by_adapter(adapter
),
628 link_down
->error_code
);
631 if (adapter
->connection_features
& FSF_FEATURE_NPIV_MODE
)
632 ZFCP_LOG_DEBUG("Debug information to link down: "
633 "primary_status=0x%02x "
635 "action_code=0x%02x "
636 "reason_code=0x%02x "
637 "explanation_code=0x%02x "
638 "vendor_specific_code=0x%02x\n",
639 link_down
->primary_status
,
640 link_down
->ioerr_code
,
641 link_down
->action_code
,
642 link_down
->reason_code
,
643 link_down
->explanation_code
,
644 link_down
->vendor_specific_code
);
646 switch (link_down
->error_code
) {
647 case FSF_PSQ_LINK_NO_LIGHT
:
648 case FSF_PSQ_LINK_WRAP_PLUG
:
649 case FSF_PSQ_LINK_NO_FCP
:
650 case FSF_PSQ_LINK_FIRMWARE_UPDATE
:
651 zfcp_erp_adapter_reopen(adapter
, 0);
654 zfcp_erp_adapter_failed(adapter
);
659 * function: zfcp_fsf_req_dispatch
661 * purpose: calls the appropriate command specific handler
666 zfcp_fsf_req_dispatch(struct zfcp_fsf_req
*fsf_req
)
668 struct zfcp_erp_action
*erp_action
= fsf_req
->erp_action
;
669 struct zfcp_adapter
*adapter
= fsf_req
->adapter
;
673 switch (fsf_req
->fsf_command
) {
675 case FSF_QTCB_FCP_CMND
:
676 zfcp_fsf_send_fcp_command_handler(fsf_req
);
679 case FSF_QTCB_ABORT_FCP_CMND
:
680 zfcp_fsf_abort_fcp_command_handler(fsf_req
);
683 case FSF_QTCB_SEND_GENERIC
:
684 zfcp_fsf_send_ct_handler(fsf_req
);
687 case FSF_QTCB_OPEN_PORT_WITH_DID
:
688 zfcp_fsf_open_port_handler(fsf_req
);
691 case FSF_QTCB_OPEN_LUN
:
692 zfcp_fsf_open_unit_handler(fsf_req
);
695 case FSF_QTCB_CLOSE_LUN
:
696 zfcp_fsf_close_unit_handler(fsf_req
);
699 case FSF_QTCB_CLOSE_PORT
:
700 zfcp_fsf_close_port_handler(fsf_req
);
703 case FSF_QTCB_CLOSE_PHYSICAL_PORT
:
704 zfcp_fsf_close_physical_port_handler(fsf_req
);
707 case FSF_QTCB_EXCHANGE_CONFIG_DATA
:
708 zfcp_fsf_exchange_config_data_handler(fsf_req
);
711 case FSF_QTCB_EXCHANGE_PORT_DATA
:
712 zfcp_fsf_exchange_port_data_handler(fsf_req
);
715 case FSF_QTCB_SEND_ELS
:
716 zfcp_fsf_send_els_handler(fsf_req
);
719 case FSF_QTCB_DOWNLOAD_CONTROL_FILE
:
720 zfcp_fsf_control_file_handler(fsf_req
);
723 case FSF_QTCB_UPLOAD_CONTROL_FILE
:
724 zfcp_fsf_control_file_handler(fsf_req
);
728 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
729 ZFCP_LOG_NORMAL("bug: Command issued by the device driver is "
730 "not supported by the adapter %s\n",
731 zfcp_get_busid_by_adapter(adapter
));
732 if (fsf_req
->fsf_command
!= fsf_req
->qtcb
->header
.fsf_command
)
734 ("bug: Command issued by the device driver differs "
735 "from the command returned by the adapter %s "
736 "(debug info 0x%x, 0x%x).\n",
737 zfcp_get_busid_by_adapter(adapter
),
738 fsf_req
->fsf_command
,
739 fsf_req
->qtcb
->header
.fsf_command
);
745 zfcp_erp_async_handler(erp_action
, 0);
751 * function: zfcp_fsf_status_read
753 * purpose: initiates a Status Read command at the specified adapter
758 zfcp_fsf_status_read(struct zfcp_adapter
*adapter
, int req_flags
)
760 struct zfcp_fsf_req
*fsf_req
;
761 struct fsf_status_read_buffer
*status_buffer
;
762 unsigned long lock_flags
;
763 volatile struct qdio_buffer_element
*sbale
;
766 /* setup new FSF request */
767 retval
= zfcp_fsf_req_create(adapter
, FSF_QTCB_UNSOLICITED_STATUS
,
768 req_flags
| ZFCP_REQ_NO_QTCB
,
769 adapter
->pool
.fsf_req_status_read
,
770 &lock_flags
, &fsf_req
);
772 ZFCP_LOG_INFO("error: Could not create unsolicited status "
773 "buffer for adapter %s.\n",
774 zfcp_get_busid_by_adapter(adapter
));
775 goto failed_req_create
;
778 sbale
= zfcp_qdio_sbale_req(fsf_req
, fsf_req
->sbal_curr
, 0);
779 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_STATUS
;
780 sbale
[2].flags
|= SBAL_FLAGS_LAST_ENTRY
;
781 fsf_req
->sbale_curr
= 2;
784 mempool_alloc(adapter
->pool
.data_status_read
, GFP_ATOMIC
);
785 if (!status_buffer
) {
786 ZFCP_LOG_NORMAL("bug: could not get some buffer\n");
789 memset(status_buffer
, 0, sizeof (struct fsf_status_read_buffer
));
790 fsf_req
->data
= (unsigned long) status_buffer
;
792 /* insert pointer to respective buffer */
793 sbale
= zfcp_qdio_sbale_curr(fsf_req
);
794 sbale
->addr
= (void *) status_buffer
;
795 sbale
->length
= sizeof(struct fsf_status_read_buffer
);
797 /* start QDIO request for this FSF request */
798 retval
= zfcp_fsf_req_send(fsf_req
, NULL
);
800 ZFCP_LOG_DEBUG("error: Could not set-up unsolicited status "
802 goto failed_req_send
;
805 ZFCP_LOG_TRACE("Status Read request initiated (adapter%s)\n",
806 zfcp_get_busid_by_adapter(adapter
));
810 mempool_free(status_buffer
, adapter
->pool
.data_status_read
);
813 zfcp_fsf_req_free(fsf_req
);
815 zfcp_hba_dbf_event_fsf_unsol("fail", adapter
, NULL
);
817 write_unlock_irqrestore(&adapter
->request_queue
.queue_lock
, lock_flags
);
822 zfcp_fsf_status_read_port_closed(struct zfcp_fsf_req
*fsf_req
)
824 struct fsf_status_read_buffer
*status_buffer
;
825 struct zfcp_adapter
*adapter
;
826 struct zfcp_port
*port
;
829 status_buffer
= (struct fsf_status_read_buffer
*) fsf_req
->data
;
830 adapter
= fsf_req
->adapter
;
832 read_lock_irqsave(&zfcp_data
.config_lock
, flags
);
833 list_for_each_entry(port
, &adapter
->port_list_head
, list
)
834 if (port
->d_id
== (status_buffer
->d_id
& ZFCP_DID_MASK
))
836 read_unlock_irqrestore(&zfcp_data
.config_lock
, flags
);
838 if (!port
|| (port
->d_id
!= (status_buffer
->d_id
& ZFCP_DID_MASK
))) {
839 ZFCP_LOG_NORMAL("bug: Reopen port indication received for"
840 "nonexisting port with d_id 0x%08x on "
841 "adapter %s. Ignored.\n",
842 status_buffer
->d_id
& ZFCP_DID_MASK
,
843 zfcp_get_busid_by_adapter(adapter
));
847 switch (status_buffer
->status_subtype
) {
849 case FSF_STATUS_READ_SUB_CLOSE_PHYS_PORT
:
850 debug_text_event(adapter
->erp_dbf
, 3, "unsol_pc_phys:");
851 zfcp_erp_port_reopen(port
, 0);
854 case FSF_STATUS_READ_SUB_ERROR_PORT
:
855 debug_text_event(adapter
->erp_dbf
, 1, "unsol_pc_err:");
856 zfcp_erp_port_shutdown(port
, 0);
860 debug_text_event(adapter
->erp_dbf
, 0, "unsol_unk_sub:");
861 debug_exception(adapter
->erp_dbf
, 0,
862 &status_buffer
->status_subtype
, sizeof (u32
));
863 ZFCP_LOG_NORMAL("bug: Undefined status subtype received "
864 "for a reopen indication on port with "
865 "d_id 0x%08x on the adapter %s. "
866 "Ignored. (debug info 0x%x)\n",
868 zfcp_get_busid_by_adapter(adapter
),
869 status_buffer
->status_subtype
);
876 * function: zfcp_fsf_status_read_handler
878 * purpose: is called for finished Open Port command
883 zfcp_fsf_status_read_handler(struct zfcp_fsf_req
*fsf_req
)
886 struct zfcp_adapter
*adapter
= fsf_req
->adapter
;
887 struct fsf_status_read_buffer
*status_buffer
=
888 (struct fsf_status_read_buffer
*) fsf_req
->data
;
890 if (fsf_req
->status
& ZFCP_STATUS_FSFREQ_DISMISSED
) {
891 zfcp_hba_dbf_event_fsf_unsol("dism", adapter
, status_buffer
);
892 mempool_free(status_buffer
, adapter
->pool
.data_status_read
);
893 zfcp_fsf_req_free(fsf_req
);
897 zfcp_hba_dbf_event_fsf_unsol("read", adapter
, status_buffer
);
899 switch (status_buffer
->status_type
) {
901 case FSF_STATUS_READ_PORT_CLOSED
:
902 zfcp_fsf_status_read_port_closed(fsf_req
);
905 case FSF_STATUS_READ_INCOMING_ELS
:
906 zfcp_fsf_incoming_els(fsf_req
);
909 case FSF_STATUS_READ_SENSE_DATA_AVAIL
:
910 ZFCP_LOG_INFO("unsolicited sense data received (adapter %s)\n",
911 zfcp_get_busid_by_adapter(adapter
));
914 case FSF_STATUS_READ_BIT_ERROR_THRESHOLD
:
915 ZFCP_LOG_NORMAL("Bit error threshold data received:\n");
916 ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_NORMAL
,
917 (char *) status_buffer
,
918 sizeof (struct fsf_status_read_buffer
));
921 case FSF_STATUS_READ_LINK_DOWN
:
922 switch (status_buffer
->status_subtype
) {
923 case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK
:
924 ZFCP_LOG_INFO("Physical link to adapter %s is down\n",
925 zfcp_get_busid_by_adapter(adapter
));
926 zfcp_fsf_link_down_info_eval(adapter
,
927 (struct fsf_link_down_info
*)
928 &status_buffer
->payload
);
930 case FSF_STATUS_READ_SUB_FDISC_FAILED
:
931 ZFCP_LOG_INFO("Local link to adapter %s is down "
932 "due to failed FDISC login\n",
933 zfcp_get_busid_by_adapter(adapter
));
934 zfcp_fsf_link_down_info_eval(adapter
,
935 (struct fsf_link_down_info
*)
936 &status_buffer
->payload
);
938 case FSF_STATUS_READ_SUB_FIRMWARE_UPDATE
:
939 ZFCP_LOG_INFO("Local link to adapter %s is down "
940 "due to firmware update on adapter\n",
941 zfcp_get_busid_by_adapter(adapter
));
942 zfcp_fsf_link_down_info_eval(adapter
, NULL
);
945 ZFCP_LOG_INFO("Local link to adapter %s is down "
946 "due to unknown reason\n",
947 zfcp_get_busid_by_adapter(adapter
));
948 zfcp_fsf_link_down_info_eval(adapter
, NULL
);
952 case FSF_STATUS_READ_LINK_UP
:
953 ZFCP_LOG_NORMAL("Local link to adapter %s was replugged. "
954 "Restarting operations on this adapter\n",
955 zfcp_get_busid_by_adapter(adapter
));
956 /* All ports should be marked as ready to run again */
957 zfcp_erp_modify_adapter_status(adapter
,
958 ZFCP_STATUS_COMMON_RUNNING
,
960 zfcp_erp_adapter_reopen(adapter
,
961 ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED
962 | ZFCP_STATUS_COMMON_ERP_FAILED
);
965 case FSF_STATUS_READ_NOTIFICATION_LOST
:
966 ZFCP_LOG_NORMAL("Unsolicited status notification(s) lost: "
967 "adapter %s%s%s%s%s%s%s%s%s\n",
968 zfcp_get_busid_by_adapter(adapter
),
969 (status_buffer
->status_subtype
&
970 FSF_STATUS_READ_SUB_INCOMING_ELS
) ?
971 ", incoming ELS" : "",
972 (status_buffer
->status_subtype
&
973 FSF_STATUS_READ_SUB_SENSE_DATA
) ?
975 (status_buffer
->status_subtype
&
976 FSF_STATUS_READ_SUB_LINK_STATUS
) ?
977 ", link status change" : "",
978 (status_buffer
->status_subtype
&
979 FSF_STATUS_READ_SUB_PORT_CLOSED
) ?
981 (status_buffer
->status_subtype
&
982 FSF_STATUS_READ_SUB_BIT_ERROR_THRESHOLD
) ?
983 ", bit error exception" : "",
984 (status_buffer
->status_subtype
&
985 FSF_STATUS_READ_SUB_ACT_UPDATED
) ?
987 (status_buffer
->status_subtype
&
988 FSF_STATUS_READ_SUB_ACT_HARDENED
) ?
989 ", ACT hardening" : "",
990 (status_buffer
->status_subtype
&
991 FSF_STATUS_READ_SUB_FEATURE_UPDATE_ALERT
) ?
992 ", adapter feature change" : "");
994 if (status_buffer
->status_subtype
&
995 FSF_STATUS_READ_SUB_ACT_UPDATED
)
996 zfcp_erp_adapter_access_changed(adapter
);
999 case FSF_STATUS_READ_CFDC_UPDATED
:
1000 ZFCP_LOG_NORMAL("CFDC has been updated on the adapter %s\n",
1001 zfcp_get_busid_by_adapter(adapter
));
1002 zfcp_erp_adapter_access_changed(adapter
);
1005 case FSF_STATUS_READ_CFDC_HARDENED
:
1006 switch (status_buffer
->status_subtype
) {
1007 case FSF_STATUS_READ_SUB_CFDC_HARDENED_ON_SE
:
1008 ZFCP_LOG_NORMAL("CFDC of adapter %s saved on SE\n",
1009 zfcp_get_busid_by_adapter(adapter
));
1011 case FSF_STATUS_READ_SUB_CFDC_HARDENED_ON_SE2
:
1012 ZFCP_LOG_NORMAL("CFDC of adapter %s has been copied "
1013 "to the secondary SE\n",
1014 zfcp_get_busid_by_adapter(adapter
));
1017 ZFCP_LOG_NORMAL("CFDC of adapter %s has been hardened\n",
1018 zfcp_get_busid_by_adapter(adapter
));
1022 case FSF_STATUS_READ_FEATURE_UPDATE_ALERT
:
1023 debug_text_event(adapter
->erp_dbf
, 2, "unsol_features:");
1024 ZFCP_LOG_INFO("List of supported features on adapter %s has "
1025 "been changed from 0x%08X to 0x%08X\n",
1026 zfcp_get_busid_by_adapter(adapter
),
1027 *(u32
*) (status_buffer
->payload
+ 4),
1028 *(u32
*) (status_buffer
->payload
));
1029 adapter
->adapter_features
= *(u32
*) status_buffer
->payload
;
1033 ZFCP_LOG_NORMAL("warning: An unsolicited status packet of unknown "
1034 "type was received (debug info 0x%x)\n",
1035 status_buffer
->status_type
);
1036 ZFCP_LOG_DEBUG("Dump of status_read_buffer %p:\n",
1038 ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG
,
1039 (char *) status_buffer
,
1040 sizeof (struct fsf_status_read_buffer
));
1043 mempool_free(status_buffer
, adapter
->pool
.data_status_read
);
1044 zfcp_fsf_req_free(fsf_req
);
1046 * recycle buffer and start new request repeat until outbound
1047 * queue is empty or adapter shutdown is requested
1051 * we may wait in the req_create for 5s during shutdown, so
1052 * qdio_cleanup will have to wait at least that long before returning
1053 * with failure to allow us a proper cleanup under all circumstances
1057 * allocation failure possible? (Is this code needed?)
1059 retval
= zfcp_fsf_status_read(adapter
, 0);
1061 ZFCP_LOG_INFO("Failed to create unsolicited status read "
1062 "request for the adapter %s.\n",
1063 zfcp_get_busid_by_adapter(adapter
));
1064 /* temporary fix to avoid status read buffer shortage */
1065 adapter
->status_read_failed
++;
1066 if ((ZFCP_STATUS_READS_RECOM
- adapter
->status_read_failed
)
1067 < ZFCP_STATUS_READ_FAILED_THRESHOLD
) {
1068 ZFCP_LOG_INFO("restart adapter %s due to status read "
1069 "buffer shortage\n",
1070 zfcp_get_busid_by_adapter(adapter
));
1071 zfcp_erp_adapter_reopen(adapter
, 0);
1079 * function: zfcp_fsf_abort_fcp_command
1081 * purpose: tells FSF to abort a running SCSI command
1083 * returns: address of initiated FSF request
1084 * NULL - request could not be initiated
1086 * FIXME(design): should be watched by a timeout !!!
1087 * FIXME(design) shouldn't this be modified to return an int
1088 * also...don't know how though
1090 struct zfcp_fsf_req
*
1091 zfcp_fsf_abort_fcp_command(unsigned long old_req_id
,
1092 struct zfcp_adapter
*adapter
,
1093 struct zfcp_unit
*unit
, int req_flags
)
1095 volatile struct qdio_buffer_element
*sbale
;
1096 unsigned long lock_flags
;
1097 struct zfcp_fsf_req
*fsf_req
= NULL
;
1100 /* setup new FSF request */
1101 retval
= zfcp_fsf_req_create(adapter
, FSF_QTCB_ABORT_FCP_CMND
,
1102 req_flags
, adapter
->pool
.fsf_req_abort
,
1103 &lock_flags
, &fsf_req
);
1105 ZFCP_LOG_INFO("error: Failed to create an abort command "
1106 "request for lun 0x%016Lx on port 0x%016Lx "
1110 zfcp_get_busid_by_adapter(adapter
));
1114 sbale
= zfcp_qdio_sbale_req(fsf_req
, fsf_req
->sbal_curr
, 0);
1115 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_READ
;
1116 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
1118 fsf_req
->data
= (unsigned long) unit
;
1120 /* set handles of unit and its parent port in QTCB */
1121 fsf_req
->qtcb
->header
.lun_handle
= unit
->handle
;
1122 fsf_req
->qtcb
->header
.port_handle
= unit
->port
->handle
;
1124 /* set handle of request which should be aborted */
1125 fsf_req
->qtcb
->bottom
.support
.req_handle
= (u64
) old_req_id
;
1127 /* start QDIO request for this FSF request */
1129 zfcp_fsf_start_scsi_er_timer(adapter
);
1130 retval
= zfcp_fsf_req_send(fsf_req
, NULL
);
1132 del_timer(&adapter
->scsi_er_timer
);
1133 ZFCP_LOG_INFO("error: Failed to send abort command request "
1134 "on adapter %s, port 0x%016Lx, unit 0x%016Lx\n",
1135 zfcp_get_busid_by_adapter(adapter
),
1136 unit
->port
->wwpn
, unit
->fcp_lun
);
1137 zfcp_fsf_req_free(fsf_req
);
1142 ZFCP_LOG_DEBUG("Abort FCP Command request initiated "
1143 "(adapter%s, port d_id=0x%08x, "
1144 "unit x%016Lx, old_req_id=0x%lx)\n",
1145 zfcp_get_busid_by_adapter(adapter
),
1147 unit
->fcp_lun
, old_req_id
);
1149 write_unlock_irqrestore(&adapter
->request_queue
.queue_lock
, lock_flags
);
1154 * function: zfcp_fsf_abort_fcp_command_handler
1156 * purpose: is called for finished Abort FCP Command request
1161 zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req
*new_fsf_req
)
1163 int retval
= -EINVAL
;
1164 struct zfcp_unit
*unit
;
1165 unsigned char status_qual
=
1166 new_fsf_req
->qtcb
->header
.fsf_status_qual
.word
[0];
1168 del_timer(&new_fsf_req
->adapter
->scsi_er_timer
);
1170 if (new_fsf_req
->status
& ZFCP_STATUS_FSFREQ_ERROR
) {
1171 /* do not set ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED */
1172 goto skip_fsfstatus
;
1175 unit
= (struct zfcp_unit
*) new_fsf_req
->data
;
1177 /* evaluate FSF status in QTCB */
1178 switch (new_fsf_req
->qtcb
->header
.fsf_status
) {
1180 case FSF_PORT_HANDLE_NOT_VALID
:
1181 if (status_qual
>> 4 != status_qual
% 0xf) {
1182 debug_text_event(new_fsf_req
->adapter
->erp_dbf
, 3,
1185 * In this case a command that was sent prior to a port
1186 * reopen was aborted (handles are different). This is
1190 ZFCP_LOG_INFO("Temporary port identifier 0x%x for "
1191 "port 0x%016Lx on adapter %s invalid. "
1192 "This may happen occasionally.\n",
1195 zfcp_get_busid_by_unit(unit
));
1196 ZFCP_LOG_INFO("status qualifier:\n");
1197 ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_INFO
,
1198 (char *) &new_fsf_req
->qtcb
->header
.
1200 sizeof (union fsf_status_qual
));
1201 /* Let's hope this sorts out the mess */
1202 debug_text_event(new_fsf_req
->adapter
->erp_dbf
, 1,
1204 zfcp_erp_adapter_reopen(unit
->port
->adapter
, 0);
1205 new_fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1209 case FSF_LUN_HANDLE_NOT_VALID
:
1210 if (status_qual
>> 4 != status_qual
% 0xf) {
1212 debug_text_event(new_fsf_req
->adapter
->erp_dbf
, 3,
1215 * In this case a command that was sent prior to a unit
1216 * reopen was aborted (handles are different).
1221 ("Warning: Temporary LUN identifier 0x%x of LUN "
1222 "0x%016Lx on port 0x%016Lx on adapter %s is "
1223 "invalid. This may happen in rare cases. "
1224 "Trying to re-establish link.\n",
1228 zfcp_get_busid_by_unit(unit
));
1229 ZFCP_LOG_DEBUG("Status qualifier data:\n");
1230 ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG
,
1231 (char *) &new_fsf_req
->qtcb
->header
.
1233 sizeof (union fsf_status_qual
));
1234 /* Let's hope this sorts out the mess */
1235 debug_text_event(new_fsf_req
->adapter
->erp_dbf
, 1,
1237 zfcp_erp_port_reopen(unit
->port
, 0);
1238 new_fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1242 case FSF_FCP_COMMAND_DOES_NOT_EXIST
:
1244 debug_text_event(new_fsf_req
->adapter
->erp_dbf
, 3,
1246 new_fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED
;
1249 case FSF_PORT_BOXED
:
1250 ZFCP_LOG_INFO("Remote port 0x%016Lx on adapter %s needs to "
1251 "be reopened\n", unit
->port
->wwpn
,
1252 zfcp_get_busid_by_unit(unit
));
1253 debug_text_event(new_fsf_req
->adapter
->erp_dbf
, 2,
1255 zfcp_erp_port_boxed(unit
->port
);
1256 new_fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
1257 | ZFCP_STATUS_FSFREQ_RETRY
;
1262 "unit 0x%016Lx on port 0x%016Lx on adapter %s needs "
1264 unit
->fcp_lun
, unit
->port
->wwpn
,
1265 zfcp_get_busid_by_unit(unit
));
1266 debug_text_event(new_fsf_req
->adapter
->erp_dbf
, 1, "fsf_s_lboxed");
1267 zfcp_erp_unit_boxed(unit
);
1268 new_fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
1269 | ZFCP_STATUS_FSFREQ_RETRY
;
1272 case FSF_ADAPTER_STATUS_AVAILABLE
:
1273 switch (new_fsf_req
->qtcb
->header
.fsf_status_qual
.word
[0]) {
1274 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE
:
1275 debug_text_event(new_fsf_req
->adapter
->erp_dbf
, 1,
1277 zfcp_test_link(unit
->port
);
1278 new_fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1280 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED
:
1281 /* SCSI stack will escalate */
1282 debug_text_event(new_fsf_req
->adapter
->erp_dbf
, 1,
1284 new_fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1288 ("bug: Wrong status qualifier 0x%x arrived.\n",
1289 new_fsf_req
->qtcb
->header
.fsf_status_qual
.word
[0]);
1290 debug_text_event(new_fsf_req
->adapter
->erp_dbf
, 0,
1292 debug_exception(new_fsf_req
->adapter
->erp_dbf
, 0,
1293 &new_fsf_req
->qtcb
->header
.
1294 fsf_status_qual
.word
[0], sizeof (u32
));
1301 new_fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED
;
1305 ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented "
1306 "(debug info 0x%x)\n",
1307 new_fsf_req
->qtcb
->header
.fsf_status
);
1308 debug_text_event(new_fsf_req
->adapter
->erp_dbf
, 0,
1310 debug_exception(new_fsf_req
->adapter
->erp_dbf
, 0,
1311 &new_fsf_req
->qtcb
->header
.fsf_status
,
1320 * zfcp_use_one_sbal - checks whether req buffer and resp bother each fit into
1322 * Two scatter-gather lists are passed, one for the reqeust and one for the
1326 zfcp_use_one_sbal(struct scatterlist
*req
, int req_count
,
1327 struct scatterlist
*resp
, int resp_count
)
1329 return ((req_count
== 1) &&
1330 (resp_count
== 1) &&
1331 (((unsigned long) zfcp_sg_to_address(&req
[0]) &
1333 ((unsigned long) (zfcp_sg_to_address(&req
[0]) +
1334 req
[0].length
- 1) & PAGE_MASK
)) &&
1335 (((unsigned long) zfcp_sg_to_address(&resp
[0]) &
1337 ((unsigned long) (zfcp_sg_to_address(&resp
[0]) +
1338 resp
[0].length
- 1) & PAGE_MASK
)));
1342 * zfcp_fsf_send_ct - initiate a Generic Service request (FC-GS)
1343 * @ct: pointer to struct zfcp_send_ct which conatins all needed data for
1345 * @pool: pointer to memory pool, if non-null this pool is used to allocate
1346 * a struct zfcp_fsf_req
1347 * @erp_action: pointer to erp_action, if non-null the Generic Service request
1348 * is sent within error recovery
1351 zfcp_fsf_send_ct(struct zfcp_send_ct
*ct
, mempool_t
*pool
,
1352 struct zfcp_erp_action
*erp_action
)
1354 volatile struct qdio_buffer_element
*sbale
;
1355 struct zfcp_port
*port
;
1356 struct zfcp_adapter
*adapter
;
1357 struct zfcp_fsf_req
*fsf_req
;
1358 unsigned long lock_flags
;
1363 adapter
= port
->adapter
;
1365 ret
= zfcp_fsf_req_create(adapter
, FSF_QTCB_SEND_GENERIC
,
1366 ZFCP_WAIT_FOR_SBAL
| ZFCP_REQ_AUTO_CLEANUP
,
1367 pool
, &lock_flags
, &fsf_req
);
1369 ZFCP_LOG_INFO("error: Could not create CT request (FC-GS) for "
1371 zfcp_get_busid_by_adapter(adapter
));
1375 if (erp_action
!= NULL
) {
1376 erp_action
->fsf_req
= fsf_req
;
1377 fsf_req
->erp_action
= erp_action
;
1380 sbale
= zfcp_qdio_sbale_req(fsf_req
, fsf_req
->sbal_curr
, 0);
1381 if (zfcp_use_one_sbal(ct
->req
, ct
->req_count
,
1382 ct
->resp
, ct
->resp_count
)){
1383 /* both request buffer and response buffer
1384 fit into one sbale each */
1385 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_WRITE_READ
;
1386 sbale
[2].addr
= zfcp_sg_to_address(&ct
->req
[0]);
1387 sbale
[2].length
= ct
->req
[0].length
;
1388 sbale
[3].addr
= zfcp_sg_to_address(&ct
->resp
[0]);
1389 sbale
[3].length
= ct
->resp
[0].length
;
1390 sbale
[3].flags
|= SBAL_FLAGS_LAST_ENTRY
;
1391 } else if (adapter
->adapter_features
&
1392 FSF_FEATURE_ELS_CT_CHAINED_SBALS
) {
1393 /* try to use chained SBALs */
1394 bytes
= zfcp_qdio_sbals_from_sg(fsf_req
,
1395 SBAL_FLAGS0_TYPE_WRITE_READ
,
1396 ct
->req
, ct
->req_count
,
1397 ZFCP_MAX_SBALS_PER_CT_REQ
);
1399 ZFCP_LOG_INFO("error: creation of CT request failed "
1401 zfcp_get_busid_by_adapter(adapter
));
1409 fsf_req
->qtcb
->bottom
.support
.req_buf_length
= bytes
;
1410 fsf_req
->sbale_curr
= ZFCP_LAST_SBALE_PER_SBAL
;
1411 bytes
= zfcp_qdio_sbals_from_sg(fsf_req
,
1412 SBAL_FLAGS0_TYPE_WRITE_READ
,
1413 ct
->resp
, ct
->resp_count
,
1414 ZFCP_MAX_SBALS_PER_CT_REQ
);
1416 ZFCP_LOG_INFO("error: creation of CT request failed "
1418 zfcp_get_busid_by_adapter(adapter
));
1426 fsf_req
->qtcb
->bottom
.support
.resp_buf_length
= bytes
;
1428 /* reject send generic request */
1430 "error: microcode does not support chained SBALs,"
1431 "CT request too big (adapter %s)\n",
1432 zfcp_get_busid_by_adapter(adapter
));
1437 /* settings in QTCB */
1438 fsf_req
->qtcb
->header
.port_handle
= port
->handle
;
1439 fsf_req
->qtcb
->bottom
.support
.service_class
= adapter
->fc_service_class
;
1440 fsf_req
->qtcb
->bottom
.support
.timeout
= ct
->timeout
;
1441 fsf_req
->data
= (unsigned long) ct
;
1443 zfcp_san_dbf_event_ct_request(fsf_req
);
1445 /* start QDIO request for this FSF request */
1446 ret
= zfcp_fsf_req_send(fsf_req
, ct
->timer
);
1448 ZFCP_LOG_DEBUG("error: initiation of CT request failed "
1449 "(adapter %s, port 0x%016Lx)\n",
1450 zfcp_get_busid_by_adapter(adapter
), port
->wwpn
);
1454 ZFCP_LOG_DEBUG("CT request initiated (adapter %s, port 0x%016Lx)\n",
1455 zfcp_get_busid_by_adapter(adapter
), port
->wwpn
);
1459 zfcp_fsf_req_free(fsf_req
);
1460 if (erp_action
!= NULL
) {
1461 erp_action
->fsf_req
= NULL
;
1465 write_unlock_irqrestore(&adapter
->request_queue
.queue_lock
,
1471 * zfcp_fsf_send_ct_handler - handler for Generic Service requests
1472 * @fsf_req: pointer to struct zfcp_fsf_req
1474 * Data specific for the Generic Service request is passed using
1475 * fsf_req->data. There we find the pointer to struct zfcp_send_ct.
1476 * Usually a specific handler for the CT request is called which is
1477 * found in this structure.
1480 zfcp_fsf_send_ct_handler(struct zfcp_fsf_req
*fsf_req
)
1482 struct zfcp_port
*port
;
1483 struct zfcp_adapter
*adapter
;
1484 struct zfcp_send_ct
*send_ct
;
1485 struct fsf_qtcb_header
*header
;
1486 struct fsf_qtcb_bottom_support
*bottom
;
1487 int retval
= -EINVAL
;
1488 u16 subtable
, rule
, counter
;
1490 adapter
= fsf_req
->adapter
;
1491 send_ct
= (struct zfcp_send_ct
*) fsf_req
->data
;
1492 port
= send_ct
->port
;
1493 header
= &fsf_req
->qtcb
->header
;
1494 bottom
= &fsf_req
->qtcb
->bottom
.support
;
1496 if (fsf_req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)
1497 goto skip_fsfstatus
;
1499 /* evaluate FSF status in QTCB */
1500 switch (header
->fsf_status
) {
1503 zfcp_san_dbf_event_ct_response(fsf_req
);
1507 case FSF_SERVICE_CLASS_NOT_SUPPORTED
:
1508 if (adapter
->fc_service_class
<= 3) {
1509 ZFCP_LOG_INFO("error: adapter %s does not support fc "
1511 zfcp_get_busid_by_port(port
),
1512 adapter
->fc_service_class
);
1514 ZFCP_LOG_INFO("bug: The fibre channel class at the "
1515 "adapter %s is invalid. "
1516 "(debug info %d)\n",
1517 zfcp_get_busid_by_port(port
),
1518 adapter
->fc_service_class
);
1520 /* stop operation for this adapter */
1521 debug_text_exception(adapter
->erp_dbf
, 0, "fsf_s_class_nsup");
1522 zfcp_erp_adapter_shutdown(adapter
, 0);
1523 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1526 case FSF_ADAPTER_STATUS_AVAILABLE
:
1527 switch (header
->fsf_status_qual
.word
[0]){
1528 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE
:
1529 /* reopening link to port */
1530 debug_text_event(adapter
->erp_dbf
, 1, "fsf_sq_ltest");
1531 zfcp_test_link(port
);
1532 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1534 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED
:
1535 /* ERP strategy will escalate */
1536 debug_text_event(adapter
->erp_dbf
, 1, "fsf_sq_ulp");
1537 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1540 ZFCP_LOG_INFO("bug: Wrong status qualifier 0x%x "
1542 header
->fsf_status_qual
.word
[0]);
1547 case FSF_ACCESS_DENIED
:
1548 ZFCP_LOG_NORMAL("access denied, cannot send generic service "
1549 "command (adapter %s, port d_id=0x%08x)\n",
1550 zfcp_get_busid_by_port(port
), port
->d_id
);
1551 for (counter
= 0; counter
< 2; counter
++) {
1552 subtable
= header
->fsf_status_qual
.halfword
[counter
* 2];
1553 rule
= header
->fsf_status_qual
.halfword
[counter
* 2 + 1];
1555 case FSF_SQ_CFDC_SUBTABLE_OS
:
1556 case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN
:
1557 case FSF_SQ_CFDC_SUBTABLE_PORT_DID
:
1558 case FSF_SQ_CFDC_SUBTABLE_LUN
:
1559 ZFCP_LOG_INFO("Access denied (%s rule %d)\n",
1560 zfcp_act_subtable_type
[subtable
], rule
);
1564 debug_text_event(adapter
->erp_dbf
, 1, "fsf_s_access");
1565 zfcp_erp_port_access_denied(port
);
1566 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1569 case FSF_GENERIC_COMMAND_REJECTED
:
1570 ZFCP_LOG_INFO("generic service command rejected "
1571 "(adapter %s, port d_id=0x%08x)\n",
1572 zfcp_get_busid_by_port(port
), port
->d_id
);
1573 ZFCP_LOG_INFO("status qualifier:\n");
1574 ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_INFO
,
1575 (char *) &header
->fsf_status_qual
,
1576 sizeof (union fsf_status_qual
));
1577 debug_text_event(adapter
->erp_dbf
, 1, "fsf_s_gcom_rej");
1578 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1581 case FSF_PORT_HANDLE_NOT_VALID
:
1582 ZFCP_LOG_DEBUG("Temporary port identifier 0x%x for port "
1583 "0x%016Lx on adapter %s invalid. This may "
1584 "happen occasionally.\n", port
->handle
,
1585 port
->wwpn
, zfcp_get_busid_by_port(port
));
1586 ZFCP_LOG_INFO("status qualifier:\n");
1587 ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_INFO
,
1588 (char *) &header
->fsf_status_qual
,
1589 sizeof (union fsf_status_qual
));
1590 debug_text_event(adapter
->erp_dbf
, 1, "fsf_s_phandle_nv");
1591 zfcp_erp_adapter_reopen(adapter
, 0);
1592 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1595 case FSF_PORT_BOXED
:
1596 ZFCP_LOG_INFO("port needs to be reopened "
1597 "(adapter %s, port d_id=0x%08x)\n",
1598 zfcp_get_busid_by_port(port
), port
->d_id
);
1599 debug_text_event(adapter
->erp_dbf
, 2, "fsf_s_pboxed");
1600 zfcp_erp_port_boxed(port
);
1601 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
1602 | ZFCP_STATUS_FSFREQ_RETRY
;
1605 /* following states should never occure, all cases avoided
1606 in zfcp_fsf_send_ct - but who knows ... */
1607 case FSF_PAYLOAD_SIZE_MISMATCH
:
1608 ZFCP_LOG_INFO("payload size mismatch (adapter: %s, "
1609 "req_buf_length=%d, resp_buf_length=%d)\n",
1610 zfcp_get_busid_by_adapter(adapter
),
1611 bottom
->req_buf_length
, bottom
->resp_buf_length
);
1612 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1614 case FSF_REQUEST_SIZE_TOO_LARGE
:
1615 ZFCP_LOG_INFO("request size too large (adapter: %s, "
1616 "req_buf_length=%d)\n",
1617 zfcp_get_busid_by_adapter(adapter
),
1618 bottom
->req_buf_length
);
1619 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1621 case FSF_RESPONSE_SIZE_TOO_LARGE
:
1622 ZFCP_LOG_INFO("response size too large (adapter: %s, "
1623 "resp_buf_length=%d)\n",
1624 zfcp_get_busid_by_adapter(adapter
),
1625 bottom
->resp_buf_length
);
1626 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1628 case FSF_SBAL_MISMATCH
:
1629 ZFCP_LOG_INFO("SBAL mismatch (adapter: %s, req_buf_length=%d, "
1630 "resp_buf_length=%d)\n",
1631 zfcp_get_busid_by_adapter(adapter
),
1632 bottom
->req_buf_length
, bottom
->resp_buf_length
);
1633 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1637 ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented "
1638 "(debug info 0x%x)\n", header
->fsf_status
);
1639 debug_text_event(adapter
->erp_dbf
, 0, "fsf_sq_inval:");
1640 debug_exception(adapter
->erp_dbf
, 0,
1641 &header
->fsf_status_qual
.word
[0], sizeof (u32
));
1646 send_ct
->status
= retval
;
1648 if (send_ct
->handler
!= NULL
)
1649 send_ct
->handler(send_ct
->handler_data
);
1655 * zfcp_fsf_send_els - initiate an ELS command (FC-FS)
1656 * @els: pointer to struct zfcp_send_els which contains all needed data for
1660 zfcp_fsf_send_els(struct zfcp_send_els
*els
)
1662 volatile struct qdio_buffer_element
*sbale
;
1663 struct zfcp_fsf_req
*fsf_req
;
1665 struct zfcp_adapter
*adapter
;
1666 unsigned long lock_flags
;
1671 adapter
= els
->adapter
;
1673 ret
= zfcp_fsf_req_create(adapter
, FSF_QTCB_SEND_ELS
,
1674 ZFCP_REQ_AUTO_CLEANUP
,
1675 NULL
, &lock_flags
, &fsf_req
);
1677 ZFCP_LOG_INFO("error: creation of ELS request failed "
1678 "(adapter %s, port d_id: 0x%08x)\n",
1679 zfcp_get_busid_by_adapter(adapter
), d_id
);
1683 sbale
= zfcp_qdio_sbale_req(fsf_req
, fsf_req
->sbal_curr
, 0);
1684 if (zfcp_use_one_sbal(els
->req
, els
->req_count
,
1685 els
->resp
, els
->resp_count
)){
1686 /* both request buffer and response buffer
1687 fit into one sbale each */
1688 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_WRITE_READ
;
1689 sbale
[2].addr
= zfcp_sg_to_address(&els
->req
[0]);
1690 sbale
[2].length
= els
->req
[0].length
;
1691 sbale
[3].addr
= zfcp_sg_to_address(&els
->resp
[0]);
1692 sbale
[3].length
= els
->resp
[0].length
;
1693 sbale
[3].flags
|= SBAL_FLAGS_LAST_ENTRY
;
1694 } else if (adapter
->adapter_features
&
1695 FSF_FEATURE_ELS_CT_CHAINED_SBALS
) {
1696 /* try to use chained SBALs */
1697 bytes
= zfcp_qdio_sbals_from_sg(fsf_req
,
1698 SBAL_FLAGS0_TYPE_WRITE_READ
,
1699 els
->req
, els
->req_count
,
1700 ZFCP_MAX_SBALS_PER_ELS_REQ
);
1702 ZFCP_LOG_INFO("error: creation of ELS request failed "
1703 "(adapter %s, port d_id: 0x%08x)\n",
1704 zfcp_get_busid_by_adapter(adapter
), d_id
);
1712 fsf_req
->qtcb
->bottom
.support
.req_buf_length
= bytes
;
1713 fsf_req
->sbale_curr
= ZFCP_LAST_SBALE_PER_SBAL
;
1714 bytes
= zfcp_qdio_sbals_from_sg(fsf_req
,
1715 SBAL_FLAGS0_TYPE_WRITE_READ
,
1716 els
->resp
, els
->resp_count
,
1717 ZFCP_MAX_SBALS_PER_ELS_REQ
);
1719 ZFCP_LOG_INFO("error: creation of ELS request failed "
1720 "(adapter %s, port d_id: 0x%08x)\n",
1721 zfcp_get_busid_by_adapter(adapter
), d_id
);
1729 fsf_req
->qtcb
->bottom
.support
.resp_buf_length
= bytes
;
1731 /* reject request */
1732 ZFCP_LOG_INFO("error: microcode does not support chained SBALs"
1733 ", ELS request too big (adapter %s, "
1734 "port d_id: 0x%08x)\n",
1735 zfcp_get_busid_by_adapter(adapter
), d_id
);
1740 /* settings in QTCB */
1741 fsf_req
->qtcb
->bottom
.support
.d_id
= d_id
;
1742 fsf_req
->qtcb
->bottom
.support
.service_class
= adapter
->fc_service_class
;
1743 fsf_req
->qtcb
->bottom
.support
.timeout
= ZFCP_ELS_TIMEOUT
;
1744 fsf_req
->data
= (unsigned long) els
;
1746 sbale
= zfcp_qdio_sbale_req(fsf_req
, fsf_req
->sbal_curr
, 0);
1748 zfcp_san_dbf_event_els_request(fsf_req
);
1750 /* start QDIO request for this FSF request */
1751 ret
= zfcp_fsf_req_send(fsf_req
, els
->timer
);
1753 ZFCP_LOG_DEBUG("error: initiation of ELS request failed "
1754 "(adapter %s, port d_id: 0x%08x)\n",
1755 zfcp_get_busid_by_adapter(adapter
), d_id
);
1759 ZFCP_LOG_DEBUG("ELS request initiated (adapter %s, port d_id: "
1760 "0x%08x)\n", zfcp_get_busid_by_adapter(adapter
), d_id
);
1764 zfcp_fsf_req_free(fsf_req
);
1768 write_unlock_irqrestore(&adapter
->request_queue
.queue_lock
,
1775 * zfcp_fsf_send_els_handler - handler for ELS commands
1776 * @fsf_req: pointer to struct zfcp_fsf_req
1778 * Data specific for the ELS command is passed using
1779 * fsf_req->data. There we find the pointer to struct zfcp_send_els.
1780 * Usually a specific handler for the ELS command is called which is
1781 * found in this structure.
1783 static int zfcp_fsf_send_els_handler(struct zfcp_fsf_req
*fsf_req
)
1785 struct zfcp_adapter
*adapter
;
1786 struct zfcp_port
*port
;
1788 struct fsf_qtcb_header
*header
;
1789 struct fsf_qtcb_bottom_support
*bottom
;
1790 struct zfcp_send_els
*send_els
;
1791 int retval
= -EINVAL
;
1792 u16 subtable
, rule
, counter
;
1794 send_els
= (struct zfcp_send_els
*) fsf_req
->data
;
1795 adapter
= send_els
->adapter
;
1796 port
= send_els
->port
;
1797 d_id
= send_els
->d_id
;
1798 header
= &fsf_req
->qtcb
->header
;
1799 bottom
= &fsf_req
->qtcb
->bottom
.support
;
1801 if (fsf_req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)
1802 goto skip_fsfstatus
;
1804 switch (header
->fsf_status
) {
1807 zfcp_san_dbf_event_els_response(fsf_req
);
1811 case FSF_SERVICE_CLASS_NOT_SUPPORTED
:
1812 if (adapter
->fc_service_class
<= 3) {
1813 ZFCP_LOG_INFO("error: adapter %s does "
1814 "not support fibrechannel class %d.\n",
1815 zfcp_get_busid_by_adapter(adapter
),
1816 adapter
->fc_service_class
);
1818 ZFCP_LOG_INFO("bug: The fibrechannel class at "
1819 "adapter %s is invalid. "
1820 "(debug info %d)\n",
1821 zfcp_get_busid_by_adapter(adapter
),
1822 adapter
->fc_service_class
);
1824 /* stop operation for this adapter */
1825 debug_text_exception(adapter
->erp_dbf
, 0, "fsf_s_class_nsup");
1826 zfcp_erp_adapter_shutdown(adapter
, 0);
1827 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1830 case FSF_ADAPTER_STATUS_AVAILABLE
:
1831 switch (header
->fsf_status_qual
.word
[0]){
1832 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE
:
1833 debug_text_event(adapter
->erp_dbf
, 1, "fsf_sq_ltest");
1834 if (port
&& (send_els
->ls_code
!= ZFCP_LS_ADISC
))
1835 zfcp_test_link(port
);
1836 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1838 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED
:
1839 debug_text_event(adapter
->erp_dbf
, 1, "fsf_sq_ulp");
1840 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1842 zfcp_handle_els_rjt(header
->fsf_status_qual
.word
[1],
1843 (struct zfcp_ls_rjt_par
*)
1844 &header
->fsf_status_qual
.word
[2]);
1846 case FSF_SQ_RETRY_IF_POSSIBLE
:
1847 debug_text_event(adapter
->erp_dbf
, 1, "fsf_sq_retry");
1848 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1851 ZFCP_LOG_INFO("bug: Wrong status qualifier 0x%x\n",
1852 header
->fsf_status_qual
.word
[0]);
1853 ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_INFO
,
1854 (char*)header
->fsf_status_qual
.word
, 16);
1858 case FSF_ELS_COMMAND_REJECTED
:
1859 ZFCP_LOG_INFO("ELS has been rejected because command filter "
1860 "prohibited sending "
1861 "(adapter: %s, port d_id: 0x%08x)\n",
1862 zfcp_get_busid_by_adapter(adapter
), d_id
);
1866 case FSF_PAYLOAD_SIZE_MISMATCH
:
1868 "ELS request size and ELS response size must be either "
1869 "both 0, or both greater than 0 "
1870 "(adapter: %s, req_buf_length=%d resp_buf_length=%d)\n",
1871 zfcp_get_busid_by_adapter(adapter
),
1872 bottom
->req_buf_length
,
1873 bottom
->resp_buf_length
);
1876 case FSF_REQUEST_SIZE_TOO_LARGE
:
1878 "Length of the ELS request buffer, "
1879 "specified in QTCB bottom, "
1880 "exceeds the size of the buffers "
1881 "that have been allocated for ELS request data "
1882 "(adapter: %s, req_buf_length=%d)\n",
1883 zfcp_get_busid_by_adapter(adapter
),
1884 bottom
->req_buf_length
);
1887 case FSF_RESPONSE_SIZE_TOO_LARGE
:
1889 "Length of the ELS response buffer, "
1890 "specified in QTCB bottom, "
1891 "exceeds the size of the buffers "
1892 "that have been allocated for ELS response data "
1893 "(adapter: %s, resp_buf_length=%d)\n",
1894 zfcp_get_busid_by_adapter(adapter
),
1895 bottom
->resp_buf_length
);
1898 case FSF_SBAL_MISMATCH
:
1899 /* should never occure, avoided in zfcp_fsf_send_els */
1900 ZFCP_LOG_INFO("SBAL mismatch (adapter: %s, req_buf_length=%d, "
1901 "resp_buf_length=%d)\n",
1902 zfcp_get_busid_by_adapter(adapter
),
1903 bottom
->req_buf_length
, bottom
->resp_buf_length
);
1904 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1907 case FSF_ACCESS_DENIED
:
1908 ZFCP_LOG_NORMAL("access denied, cannot send ELS command "
1909 "(adapter %s, port d_id=0x%08x)\n",
1910 zfcp_get_busid_by_adapter(adapter
), d_id
);
1911 for (counter
= 0; counter
< 2; counter
++) {
1912 subtable
= header
->fsf_status_qual
.halfword
[counter
* 2];
1913 rule
= header
->fsf_status_qual
.halfword
[counter
* 2 + 1];
1915 case FSF_SQ_CFDC_SUBTABLE_OS
:
1916 case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN
:
1917 case FSF_SQ_CFDC_SUBTABLE_PORT_DID
:
1918 case FSF_SQ_CFDC_SUBTABLE_LUN
:
1919 ZFCP_LOG_INFO("Access denied (%s rule %d)\n",
1920 zfcp_act_subtable_type
[subtable
], rule
);
1924 debug_text_event(adapter
->erp_dbf
, 1, "fsf_s_access");
1926 zfcp_erp_port_access_denied(port
);
1927 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1932 "bug: An unknown FSF Status was presented "
1933 "(adapter: %s, fsf_status=0x%08x)\n",
1934 zfcp_get_busid_by_adapter(adapter
),
1935 header
->fsf_status
);
1936 debug_text_event(adapter
->erp_dbf
, 0, "fsf_sq_inval");
1937 debug_exception(adapter
->erp_dbf
, 0,
1938 &header
->fsf_status_qual
.word
[0], sizeof(u32
));
1939 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1944 send_els
->status
= retval
;
1946 if (send_els
->handler
!= 0)
1947 send_els
->handler(send_els
->handler_data
);
1957 * returns: address of initiated FSF request
1958 * NULL - request could not be initiated
1961 zfcp_fsf_exchange_config_data(struct zfcp_erp_action
*erp_action
)
1963 volatile struct qdio_buffer_element
*sbale
;
1964 unsigned long lock_flags
;
1967 /* setup new FSF request */
1968 retval
= zfcp_fsf_req_create(erp_action
->adapter
,
1969 FSF_QTCB_EXCHANGE_CONFIG_DATA
,
1970 ZFCP_REQ_AUTO_CLEANUP
,
1971 erp_action
->adapter
->pool
.fsf_req_erp
,
1972 &lock_flags
, &(erp_action
->fsf_req
));
1974 ZFCP_LOG_INFO("error: Could not create exchange configuration "
1975 "data request for adapter %s.\n",
1976 zfcp_get_busid_by_adapter(erp_action
->adapter
));
1980 sbale
= zfcp_qdio_sbale_req(erp_action
->fsf_req
,
1981 erp_action
->fsf_req
->sbal_curr
, 0);
1982 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_READ
;
1983 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
1985 erp_action
->fsf_req
->erp_action
= erp_action
;
1986 erp_action
->fsf_req
->qtcb
->bottom
.config
.feature_selection
=
1988 FSF_FEATURE_LUN_SHARING
|
1989 FSF_FEATURE_NOTIFICATION_LOST
|
1990 FSF_FEATURE_UPDATE_ALERT
;
1992 /* start QDIO request for this FSF request */
1993 retval
= zfcp_fsf_req_send(erp_action
->fsf_req
, &erp_action
->timer
);
1996 ("error: Could not send exchange configuration data "
1997 "command on the adapter %s\n",
1998 zfcp_get_busid_by_adapter(erp_action
->adapter
));
1999 zfcp_fsf_req_free(erp_action
->fsf_req
);
2000 erp_action
->fsf_req
= NULL
;
2004 ZFCP_LOG_DEBUG("exchange configuration data request initiated "
2006 zfcp_get_busid_by_adapter(erp_action
->adapter
));
2009 write_unlock_irqrestore(&erp_action
->adapter
->request_queue
.queue_lock
,
2015 * zfcp_fsf_exchange_config_evaluate
2016 * @fsf_req: fsf_req which belongs to xchg config data request
2017 * @xchg_ok: specifies if xchg config data was incomplete or complete (0/1)
2019 * returns: -EIO on error, 0 otherwise
2022 zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req
*fsf_req
, int xchg_ok
)
2024 struct fsf_qtcb_bottom_config
*bottom
;
2025 struct zfcp_adapter
*adapter
= fsf_req
->adapter
;
2026 struct Scsi_Host
*shost
= adapter
->scsi_host
;
2028 bottom
= &fsf_req
->qtcb
->bottom
.config
;
2029 ZFCP_LOG_DEBUG("low/high QTCB version 0x%x/0x%x of FSF\n",
2030 bottom
->low_qtcb_version
, bottom
->high_qtcb_version
);
2031 adapter
->fsf_lic_version
= bottom
->lic_version
;
2032 adapter
->adapter_features
= bottom
->adapter_features
;
2033 adapter
->connection_features
= bottom
->connection_features
;
2034 adapter
->peer_wwpn
= 0;
2035 adapter
->peer_wwnn
= 0;
2036 adapter
->peer_d_id
= 0;
2039 fc_host_node_name(shost
) = bottom
->nport_serv_param
.wwnn
;
2040 fc_host_port_name(shost
) = bottom
->nport_serv_param
.wwpn
;
2041 fc_host_port_id(shost
) = bottom
->s_id
& ZFCP_DID_MASK
;
2042 fc_host_speed(shost
) = bottom
->fc_link_speed
;
2043 fc_host_supported_classes(shost
) = FC_COS_CLASS2
| FC_COS_CLASS3
;
2044 adapter
->hydra_version
= bottom
->adapter_type
;
2045 if (fc_host_permanent_port_name(shost
) == -1)
2046 fc_host_permanent_port_name(shost
) =
2047 fc_host_port_name(shost
);
2048 if (bottom
->fc_topology
== FSF_TOPO_P2P
) {
2049 adapter
->peer_d_id
= bottom
->peer_d_id
& ZFCP_DID_MASK
;
2050 adapter
->peer_wwpn
= bottom
->plogi_payload
.wwpn
;
2051 adapter
->peer_wwnn
= bottom
->plogi_payload
.wwnn
;
2052 fc_host_port_type(shost
) = FC_PORTTYPE_PTP
;
2053 } else if (bottom
->fc_topology
== FSF_TOPO_FABRIC
)
2054 fc_host_port_type(shost
) = FC_PORTTYPE_NPORT
;
2055 else if (bottom
->fc_topology
== FSF_TOPO_AL
)
2056 fc_host_port_type(shost
) = FC_PORTTYPE_NLPORT
;
2058 fc_host_port_type(shost
) = FC_PORTTYPE_UNKNOWN
;
2060 fc_host_node_name(shost
) = 0;
2061 fc_host_port_name(shost
) = 0;
2062 fc_host_port_id(shost
) = 0;
2063 fc_host_speed(shost
) = FC_PORTSPEED_UNKNOWN
;
2064 fc_host_port_type(shost
) = FC_PORTTYPE_UNKNOWN
;
2065 adapter
->hydra_version
= 0;
2068 if (adapter
->adapter_features
& FSF_FEATURE_HBAAPI_MANAGEMENT
) {
2069 adapter
->hardware_version
= bottom
->hardware_version
;
2070 memcpy(fc_host_serial_number(shost
), bottom
->serial_number
,
2071 min(FC_SERIAL_NUMBER_SIZE
, 17));
2072 EBCASC(fc_host_serial_number(shost
),
2073 min(FC_SERIAL_NUMBER_SIZE
, 17));
2076 ZFCP_LOG_NORMAL("The adapter %s reported the following characteristics:\n"
2080 "adapter version 0x%x, "
2081 "LIC version 0x%x, "
2082 "FC link speed %d Gb/s\n",
2083 zfcp_get_busid_by_adapter(adapter
),
2084 (wwn_t
) fc_host_node_name(shost
),
2085 (wwn_t
) fc_host_port_name(shost
),
2086 fc_host_port_id(shost
),
2087 adapter
->hydra_version
,
2088 adapter
->fsf_lic_version
,
2089 fc_host_speed(shost
));
2090 if (ZFCP_QTCB_VERSION
< bottom
->low_qtcb_version
) {
2091 ZFCP_LOG_NORMAL("error: the adapter %s "
2092 "only supports newer control block "
2093 "versions in comparison to this device "
2094 "driver (try updated device driver)\n",
2095 zfcp_get_busid_by_adapter(adapter
));
2096 debug_text_event(adapter
->erp_dbf
, 0, "low_qtcb_ver");
2097 zfcp_erp_adapter_shutdown(adapter
, 0);
2100 if (ZFCP_QTCB_VERSION
> bottom
->high_qtcb_version
) {
2101 ZFCP_LOG_NORMAL("error: the adapter %s "
2102 "only supports older control block "
2103 "versions than this device driver uses"
2104 "(consider a microcode upgrade)\n",
2105 zfcp_get_busid_by_adapter(adapter
));
2106 debug_text_event(adapter
->erp_dbf
, 0, "high_qtcb_ver");
2107 zfcp_erp_adapter_shutdown(adapter
, 0);
2114 * function: zfcp_fsf_exchange_config_data_handler
2116 * purpose: is called for finished Exchange Configuration Data command
2121 zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req
*fsf_req
)
2123 struct fsf_qtcb_bottom_config
*bottom
;
2124 struct zfcp_adapter
*adapter
= fsf_req
->adapter
;
2125 struct fsf_qtcb
*qtcb
= fsf_req
->qtcb
;
2127 if (fsf_req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)
2130 switch (qtcb
->header
.fsf_status
) {
2133 if (zfcp_fsf_exchange_config_evaluate(fsf_req
, 1))
2136 switch (fc_host_port_type(adapter
->scsi_host
)) {
2137 case FC_PORTTYPE_PTP
:
2138 ZFCP_LOG_NORMAL("Point-to-Point fibrechannel "
2139 "configuration detected at adapter %s\n"
2140 "Peer WWNN 0x%016llx, "
2141 "peer WWPN 0x%016llx, "
2142 "peer d_id 0x%06x\n",
2143 zfcp_get_busid_by_adapter(adapter
),
2146 adapter
->peer_d_id
);
2147 debug_text_event(fsf_req
->adapter
->erp_dbf
, 0,
2150 case FC_PORTTYPE_NLPORT
:
2151 ZFCP_LOG_NORMAL("error: Arbitrated loop fibrechannel "
2152 "topology detected at adapter %s "
2153 "unsupported, shutting down adapter\n",
2154 zfcp_get_busid_by_adapter(adapter
));
2155 debug_text_event(fsf_req
->adapter
->erp_dbf
, 0,
2157 zfcp_erp_adapter_shutdown(adapter
, 0);
2159 case FC_PORTTYPE_NPORT
:
2160 ZFCP_LOG_NORMAL("Switched fabric fibrechannel "
2161 "network detected at adapter %s.\n",
2162 zfcp_get_busid_by_adapter(adapter
));
2165 ZFCP_LOG_NORMAL("bug: The fibrechannel topology "
2166 "reported by the exchange "
2167 "configuration command for "
2168 "the adapter %s is not "
2169 "of a type known to the zfcp "
2170 "driver, shutting down adapter\n",
2171 zfcp_get_busid_by_adapter(adapter
));
2172 debug_text_exception(fsf_req
->adapter
->erp_dbf
, 0,
2174 zfcp_erp_adapter_shutdown(adapter
, 0);
2177 bottom
= &qtcb
->bottom
.config
;
2178 if (bottom
->max_qtcb_size
< sizeof(struct fsf_qtcb
)) {
2179 ZFCP_LOG_NORMAL("bug: Maximum QTCB size (%d bytes) "
2180 "allowed by the adapter %s "
2181 "is lower than the minimum "
2182 "required by the driver (%ld bytes).\n",
2183 bottom
->max_qtcb_size
,
2184 zfcp_get_busid_by_adapter(adapter
),
2185 sizeof(struct fsf_qtcb
));
2186 debug_text_event(fsf_req
->adapter
->erp_dbf
, 0,
2188 debug_event(fsf_req
->adapter
->erp_dbf
, 0,
2189 &bottom
->max_qtcb_size
, sizeof (u32
));
2190 zfcp_erp_adapter_shutdown(adapter
, 0);
2193 atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK
,
2196 case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE
:
2197 debug_text_event(adapter
->erp_dbf
, 0, "xchg-inco");
2199 if (zfcp_fsf_exchange_config_evaluate(fsf_req
, 0))
2202 atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK
, &adapter
->status
);
2204 zfcp_fsf_link_down_info_eval(adapter
,
2205 &qtcb
->header
.fsf_status_qual
.link_down_info
);
2208 debug_text_event(fsf_req
->adapter
->erp_dbf
, 0, "fsf-stat-ng");
2209 debug_event(fsf_req
->adapter
->erp_dbf
, 0,
2210 &fsf_req
->qtcb
->header
.fsf_status
, sizeof (u32
));
2211 zfcp_erp_adapter_shutdown(adapter
, 0);
2218 * zfcp_fsf_exchange_port_data - request information about local port
2219 * @erp_action: ERP action for the adapter for which port data is requested
2220 * @adapter: for which port data is requested
2221 * @data: response to exchange port data request
2224 zfcp_fsf_exchange_port_data(struct zfcp_erp_action
*erp_action
,
2225 struct zfcp_adapter
*adapter
,
2226 struct fsf_qtcb_bottom_port
*data
)
2228 volatile struct qdio_buffer_element
*sbale
;
2230 unsigned long lock_flags
;
2231 struct zfcp_fsf_req
*fsf_req
;
2232 struct timer_list
*timer
;
2234 if (!(adapter
->adapter_features
& FSF_FEATURE_HBAAPI_MANAGEMENT
)) {
2235 ZFCP_LOG_INFO("error: exchange port data "
2236 "command not supported by adapter %s\n",
2237 zfcp_get_busid_by_adapter(adapter
));
2241 /* setup new FSF request */
2242 retval
= zfcp_fsf_req_create(adapter
, FSF_QTCB_EXCHANGE_PORT_DATA
,
2243 erp_action
? ZFCP_REQ_AUTO_CLEANUP
: 0,
2244 0, &lock_flags
, &fsf_req
);
2246 ZFCP_LOG_INFO("error: Out of resources. Could not create an "
2247 "exchange port data request for"
2248 "the adapter %s.\n",
2249 zfcp_get_busid_by_adapter(adapter
));
2250 write_unlock_irqrestore(&adapter
->request_queue
.queue_lock
,
2256 fsf_req
->data
= (unsigned long) data
;
2258 sbale
= zfcp_qdio_sbale_req(fsf_req
, fsf_req
->sbal_curr
, 0);
2259 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_READ
;
2260 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
2263 erp_action
->fsf_req
= fsf_req
;
2264 fsf_req
->erp_action
= erp_action
;
2265 timer
= &erp_action
->timer
;
2267 timer
= kmalloc(sizeof(struct timer_list
), GFP_ATOMIC
);
2269 write_unlock_irqrestore(&adapter
->request_queue
.queue_lock
,
2271 zfcp_fsf_req_free(fsf_req
);
2275 timer
->function
= zfcp_fsf_request_timeout_handler
;
2276 timer
->data
= (unsigned long) adapter
;
2277 timer
->expires
= ZFCP_FSF_REQUEST_TIMEOUT
;
2280 retval
= zfcp_fsf_req_send(fsf_req
, timer
);
2282 ZFCP_LOG_INFO("error: Could not send an exchange port data "
2283 "command on the adapter %s\n",
2284 zfcp_get_busid_by_adapter(adapter
));
2285 zfcp_fsf_req_free(fsf_req
);
2287 erp_action
->fsf_req
= NULL
;
2290 write_unlock_irqrestore(&adapter
->request_queue
.queue_lock
,
2295 write_unlock_irqrestore(&adapter
->request_queue
.queue_lock
, lock_flags
);
2298 wait_event(fsf_req
->completion_wq
,
2299 fsf_req
->status
& ZFCP_STATUS_FSFREQ_COMPLETED
);
2300 del_timer_sync(timer
);
2301 zfcp_fsf_req_free(fsf_req
);
2309 * zfcp_fsf_exchange_port_data_handler - handler for exchange_port_data request
2310 * @fsf_req: pointer to struct zfcp_fsf_req
2313 zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req
*fsf_req
)
2315 struct zfcp_adapter
*adapter
= fsf_req
->adapter
;
2316 struct Scsi_Host
*shost
= adapter
->scsi_host
;
2317 struct fsf_qtcb
*qtcb
= fsf_req
->qtcb
;
2318 struct fsf_qtcb_bottom_port
*bottom
, *data
;
2320 if (fsf_req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)
2323 switch (qtcb
->header
.fsf_status
) {
2325 atomic_set_mask(ZFCP_STATUS_ADAPTER_XPORT_OK
, &adapter
->status
);
2327 bottom
= &qtcb
->bottom
.port
;
2328 data
= (struct fsf_qtcb_bottom_port
*) fsf_req
->data
;
2330 memcpy(data
, bottom
, sizeof(struct fsf_qtcb_bottom_port
));
2331 if (adapter
->connection_features
& FSF_FEATURE_NPIV_MODE
)
2332 fc_host_permanent_port_name(shost
) = bottom
->wwpn
;
2334 fc_host_permanent_port_name(shost
) =
2335 fc_host_port_name(shost
);
2336 fc_host_maxframe_size(shost
) = bottom
->maximum_frame_size
;
2337 fc_host_supported_speeds(shost
) = bottom
->supported_speed
;
2340 case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE
:
2341 atomic_set_mask(ZFCP_STATUS_ADAPTER_XPORT_OK
, &adapter
->status
);
2343 zfcp_fsf_link_down_info_eval(adapter
,
2344 &qtcb
->header
.fsf_status_qual
.link_down_info
);
2348 debug_text_event(adapter
->erp_dbf
, 0, "xchg-port-ng");
2349 debug_event(adapter
->erp_dbf
, 0,
2350 &fsf_req
->qtcb
->header
.fsf_status
, sizeof(u32
));
2356 * function: zfcp_fsf_open_port
2360 * returns: address of initiated FSF request
2361 * NULL - request could not be initiated
2364 zfcp_fsf_open_port(struct zfcp_erp_action
*erp_action
)
2366 volatile struct qdio_buffer_element
*sbale
;
2367 unsigned long lock_flags
;
2370 /* setup new FSF request */
2371 retval
= zfcp_fsf_req_create(erp_action
->adapter
,
2372 FSF_QTCB_OPEN_PORT_WITH_DID
,
2373 ZFCP_WAIT_FOR_SBAL
| ZFCP_REQ_AUTO_CLEANUP
,
2374 erp_action
->adapter
->pool
.fsf_req_erp
,
2375 &lock_flags
, &(erp_action
->fsf_req
));
2377 ZFCP_LOG_INFO("error: Could not create open port request "
2378 "for port 0x%016Lx on adapter %s.\n",
2379 erp_action
->port
->wwpn
,
2380 zfcp_get_busid_by_adapter(erp_action
->adapter
));
2384 sbale
= zfcp_qdio_sbale_req(erp_action
->fsf_req
,
2385 erp_action
->fsf_req
->sbal_curr
, 0);
2386 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_READ
;
2387 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
2389 erp_action
->fsf_req
->qtcb
->bottom
.support
.d_id
= erp_action
->port
->d_id
;
2390 atomic_set_mask(ZFCP_STATUS_COMMON_OPENING
, &erp_action
->port
->status
);
2391 erp_action
->fsf_req
->data
= (unsigned long) erp_action
->port
;
2392 erp_action
->fsf_req
->erp_action
= erp_action
;
2394 /* start QDIO request for this FSF request */
2395 retval
= zfcp_fsf_req_send(erp_action
->fsf_req
, &erp_action
->timer
);
2397 ZFCP_LOG_INFO("error: Could not send open port request for "
2398 "port 0x%016Lx on adapter %s.\n",
2399 erp_action
->port
->wwpn
,
2400 zfcp_get_busid_by_adapter(erp_action
->adapter
));
2401 zfcp_fsf_req_free(erp_action
->fsf_req
);
2402 erp_action
->fsf_req
= NULL
;
2406 ZFCP_LOG_DEBUG("open port request initiated "
2407 "(adapter %s, port 0x%016Lx)\n",
2408 zfcp_get_busid_by_adapter(erp_action
->adapter
),
2409 erp_action
->port
->wwpn
);
2411 write_unlock_irqrestore(&erp_action
->adapter
->request_queue
.queue_lock
,
2417 * function: zfcp_fsf_open_port_handler
2419 * purpose: is called for finished Open Port command
2424 zfcp_fsf_open_port_handler(struct zfcp_fsf_req
*fsf_req
)
2426 int retval
= -EINVAL
;
2427 struct zfcp_port
*port
;
2428 struct fsf_plogi
*plogi
;
2429 struct fsf_qtcb_header
*header
;
2430 u16 subtable
, rule
, counter
;
2432 port
= (struct zfcp_port
*) fsf_req
->data
;
2433 header
= &fsf_req
->qtcb
->header
;
2435 if (fsf_req
->status
& ZFCP_STATUS_FSFREQ_ERROR
) {
2436 /* don't change port status in our bookkeeping */
2437 goto skip_fsfstatus
;
2440 /* evaluate FSF status in QTCB */
2441 switch (header
->fsf_status
) {
2443 case FSF_PORT_ALREADY_OPEN
:
2444 ZFCP_LOG_NORMAL("bug: remote port 0x%016Lx on adapter %s "
2445 "is already open.\n",
2446 port
->wwpn
, zfcp_get_busid_by_port(port
));
2447 debug_text_exception(fsf_req
->adapter
->erp_dbf
, 0,
2450 * This is a bug, however operation should continue normally
2451 * if it is simply ignored
2455 case FSF_ACCESS_DENIED
:
2456 ZFCP_LOG_NORMAL("Access denied, cannot open port 0x%016Lx "
2458 port
->wwpn
, zfcp_get_busid_by_port(port
));
2459 for (counter
= 0; counter
< 2; counter
++) {
2460 subtable
= header
->fsf_status_qual
.halfword
[counter
* 2];
2461 rule
= header
->fsf_status_qual
.halfword
[counter
* 2 + 1];
2463 case FSF_SQ_CFDC_SUBTABLE_OS
:
2464 case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN
:
2465 case FSF_SQ_CFDC_SUBTABLE_PORT_DID
:
2466 case FSF_SQ_CFDC_SUBTABLE_LUN
:
2467 ZFCP_LOG_INFO("Access denied (%s rule %d)\n",
2468 zfcp_act_subtable_type
[subtable
], rule
);
2472 debug_text_event(fsf_req
->adapter
->erp_dbf
, 1, "fsf_s_access");
2473 zfcp_erp_port_access_denied(port
);
2474 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
2477 case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED
:
2478 ZFCP_LOG_INFO("error: The FSF adapter is out of resources. "
2479 "The remote port 0x%016Lx on adapter %s "
2480 "could not be opened. Disabling it.\n",
2481 port
->wwpn
, zfcp_get_busid_by_port(port
));
2482 debug_text_event(fsf_req
->adapter
->erp_dbf
, 1,
2484 zfcp_erp_port_failed(port
);
2485 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
2488 case FSF_ADAPTER_STATUS_AVAILABLE
:
2489 switch (header
->fsf_status_qual
.word
[0]) {
2490 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE
:
2491 debug_text_event(fsf_req
->adapter
->erp_dbf
, 1,
2493 /* ERP strategy will escalate */
2494 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
2496 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED
:
2497 /* ERP strategy will escalate */
2498 debug_text_event(fsf_req
->adapter
->erp_dbf
, 1,
2500 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
2502 case FSF_SQ_NO_RETRY_POSSIBLE
:
2503 ZFCP_LOG_NORMAL("The remote port 0x%016Lx on "
2504 "adapter %s could not be opened. "
2507 zfcp_get_busid_by_port(port
));
2508 debug_text_exception(fsf_req
->adapter
->erp_dbf
, 0,
2510 zfcp_erp_port_failed(port
);
2511 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
2515 ("bug: Wrong status qualifier 0x%x arrived.\n",
2516 header
->fsf_status_qual
.word
[0]);
2517 debug_text_event(fsf_req
->adapter
->erp_dbf
, 0,
2520 fsf_req
->adapter
->erp_dbf
, 0,
2521 &header
->fsf_status_qual
.word
[0],
2528 /* save port handle assigned by FSF */
2529 port
->handle
= header
->port_handle
;
2530 ZFCP_LOG_INFO("The remote port 0x%016Lx via adapter %s "
2531 "was opened, it's port handle is 0x%x\n",
2532 port
->wwpn
, zfcp_get_busid_by_port(port
),
2534 /* mark port as open */
2535 atomic_set_mask(ZFCP_STATUS_COMMON_OPEN
|
2536 ZFCP_STATUS_PORT_PHYS_OPEN
, &port
->status
);
2537 atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED
|
2538 ZFCP_STATUS_COMMON_ACCESS_BOXED
,
2541 /* check whether D_ID has changed during open */
2543 * FIXME: This check is not airtight, as the FCP channel does
2544 * not monitor closures of target port connections caused on
2545 * the remote side. Thus, they might miss out on invalidating
2546 * locally cached WWPNs (and other N_Port parameters) of gone
2547 * target ports. So, our heroic attempt to make things safe
2548 * could be undermined by 'open port' response data tagged with
2549 * obsolete WWPNs. Another reason to monitor potential
2550 * connection closures ourself at least (by interpreting
2551 * incoming ELS' and unsolicited status). It just crosses my
2552 * mind that one should be able to cross-check by means of
2553 * another GID_PN straight after a port has been opened.
2554 * Alternately, an ADISC/PDISC ELS should suffice, as well.
2556 plogi
= (struct fsf_plogi
*) fsf_req
->qtcb
->bottom
.support
.els
;
2557 if (!atomic_test_mask(ZFCP_STATUS_PORT_NO_WWPN
, &port
->status
))
2559 if (fsf_req
->qtcb
->bottom
.support
.els1_length
<
2560 ((((unsigned long) &plogi
->serv_param
.wwpn
) -
2561 ((unsigned long) plogi
)) + sizeof (u64
))) {
2563 "warning: insufficient length of "
2564 "PLOGI payload (%i)\n",
2565 fsf_req
->qtcb
->bottom
.support
.els1_length
);
2566 debug_text_event(fsf_req
->adapter
->erp_dbf
, 0,
2567 "fsf_s_short_plogi:");
2568 /* skip sanity check and assume wwpn is ok */
2570 if (plogi
->serv_param
.wwpn
!= port
->wwpn
) {
2571 ZFCP_LOG_INFO("warning: d_id of port "
2572 "0x%016Lx changed during "
2573 "open\n", port
->wwpn
);
2575 fsf_req
->adapter
->erp_dbf
, 0,
2576 "fsf_s_did_change:");
2578 ZFCP_STATUS_PORT_DID_DID
,
2581 port
->wwnn
= plogi
->serv_param
.wwnn
;
2586 case FSF_UNKNOWN_OP_SUBTYPE
:
2587 /* should never occure, subtype not set in zfcp_fsf_open_port */
2588 ZFCP_LOG_INFO("unknown operation subtype (adapter: %s, "
2589 "op_subtype=0x%x)\n",
2590 zfcp_get_busid_by_port(port
),
2591 fsf_req
->qtcb
->bottom
.support
.operation_subtype
);
2592 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
2596 ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented "
2597 "(debug info 0x%x)\n",
2598 header
->fsf_status
);
2599 debug_text_event(fsf_req
->adapter
->erp_dbf
, 0, "fsf_s_inval:");
2600 debug_exception(fsf_req
->adapter
->erp_dbf
, 0,
2601 &header
->fsf_status
, sizeof (u32
));
2606 atomic_clear_mask(ZFCP_STATUS_COMMON_OPENING
, &port
->status
);
2611 * function: zfcp_fsf_close_port
2613 * purpose: submit FSF command "close port"
2615 * returns: address of initiated FSF request
2616 * NULL - request could not be initiated
2619 zfcp_fsf_close_port(struct zfcp_erp_action
*erp_action
)
2621 volatile struct qdio_buffer_element
*sbale
;
2622 unsigned long lock_flags
;
2625 /* setup new FSF request */
2626 retval
= zfcp_fsf_req_create(erp_action
->adapter
,
2627 FSF_QTCB_CLOSE_PORT
,
2628 ZFCP_WAIT_FOR_SBAL
| ZFCP_REQ_AUTO_CLEANUP
,
2629 erp_action
->adapter
->pool
.fsf_req_erp
,
2630 &lock_flags
, &(erp_action
->fsf_req
));
2632 ZFCP_LOG_INFO("error: Could not create a close port request "
2633 "for port 0x%016Lx on adapter %s.\n",
2634 erp_action
->port
->wwpn
,
2635 zfcp_get_busid_by_adapter(erp_action
->adapter
));
2639 sbale
= zfcp_qdio_sbale_req(erp_action
->fsf_req
,
2640 erp_action
->fsf_req
->sbal_curr
, 0);
2641 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_READ
;
2642 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
2644 atomic_set_mask(ZFCP_STATUS_COMMON_CLOSING
, &erp_action
->port
->status
);
2645 erp_action
->fsf_req
->data
= (unsigned long) erp_action
->port
;
2646 erp_action
->fsf_req
->erp_action
= erp_action
;
2647 erp_action
->fsf_req
->qtcb
->header
.port_handle
=
2648 erp_action
->port
->handle
;
2650 /* start QDIO request for this FSF request */
2651 retval
= zfcp_fsf_req_send(erp_action
->fsf_req
, &erp_action
->timer
);
2653 ZFCP_LOG_INFO("error: Could not send a close port request for "
2654 "port 0x%016Lx on adapter %s.\n",
2655 erp_action
->port
->wwpn
,
2656 zfcp_get_busid_by_adapter(erp_action
->adapter
));
2657 zfcp_fsf_req_free(erp_action
->fsf_req
);
2658 erp_action
->fsf_req
= NULL
;
2662 ZFCP_LOG_TRACE("close port request initiated "
2663 "(adapter %s, port 0x%016Lx)\n",
2664 zfcp_get_busid_by_adapter(erp_action
->adapter
),
2665 erp_action
->port
->wwpn
);
2667 write_unlock_irqrestore(&erp_action
->adapter
->request_queue
.queue_lock
,
2673 * function: zfcp_fsf_close_port_handler
2675 * purpose: is called for finished Close Port FSF command
2680 zfcp_fsf_close_port_handler(struct zfcp_fsf_req
*fsf_req
)
2682 int retval
= -EINVAL
;
2683 struct zfcp_port
*port
;
2685 port
= (struct zfcp_port
*) fsf_req
->data
;
2687 if (fsf_req
->status
& ZFCP_STATUS_FSFREQ_ERROR
) {
2688 /* don't change port status in our bookkeeping */
2689 goto skip_fsfstatus
;
2692 /* evaluate FSF status in QTCB */
2693 switch (fsf_req
->qtcb
->header
.fsf_status
) {
2695 case FSF_PORT_HANDLE_NOT_VALID
:
2696 ZFCP_LOG_INFO("Temporary port identifier 0x%x for port "
2697 "0x%016Lx on adapter %s invalid. This may happen "
2698 "occasionally.\n", port
->handle
,
2699 port
->wwpn
, zfcp_get_busid_by_port(port
));
2700 ZFCP_LOG_DEBUG("status qualifier:\n");
2701 ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG
,
2702 (char *) &fsf_req
->qtcb
->header
.fsf_status_qual
,
2703 sizeof (union fsf_status_qual
));
2704 debug_text_event(fsf_req
->adapter
->erp_dbf
, 1,
2706 zfcp_erp_adapter_reopen(port
->adapter
, 0);
2707 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
2710 case FSF_ADAPTER_STATUS_AVAILABLE
:
2711 /* Note: FSF has actually closed the port in this case.
2712 * The status code is just daft. Fingers crossed for a change
2718 ZFCP_LOG_TRACE("remote port 0x016%Lx on adapter %s closed, "
2719 "port handle 0x%x\n", port
->wwpn
,
2720 zfcp_get_busid_by_port(port
), port
->handle
);
2721 zfcp_erp_modify_port_status(port
,
2722 ZFCP_STATUS_COMMON_OPEN
,
2728 ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented "
2729 "(debug info 0x%x)\n",
2730 fsf_req
->qtcb
->header
.fsf_status
);
2731 debug_text_event(fsf_req
->adapter
->erp_dbf
, 0, "fsf_s_inval:");
2732 debug_exception(fsf_req
->adapter
->erp_dbf
, 0,
2733 &fsf_req
->qtcb
->header
.fsf_status
,
2739 atomic_clear_mask(ZFCP_STATUS_COMMON_CLOSING
, &port
->status
);
2744 * function: zfcp_fsf_close_physical_port
2746 * purpose: submit FSF command "close physical port"
2748 * returns: address of initiated FSF request
2749 * NULL - request could not be initiated
2752 zfcp_fsf_close_physical_port(struct zfcp_erp_action
*erp_action
)
2755 unsigned long lock_flags
;
2756 volatile struct qdio_buffer_element
*sbale
;
2758 /* setup new FSF request */
2759 retval
= zfcp_fsf_req_create(erp_action
->adapter
,
2760 FSF_QTCB_CLOSE_PHYSICAL_PORT
,
2761 ZFCP_WAIT_FOR_SBAL
| ZFCP_REQ_AUTO_CLEANUP
,
2762 erp_action
->adapter
->pool
.fsf_req_erp
,
2763 &lock_flags
, &erp_action
->fsf_req
);
2765 ZFCP_LOG_INFO("error: Could not create close physical port "
2766 "request (adapter %s, port 0x%016Lx)\n",
2767 zfcp_get_busid_by_adapter(erp_action
->adapter
),
2768 erp_action
->port
->wwpn
);
2773 sbale
= zfcp_qdio_sbale_req(erp_action
->fsf_req
,
2774 erp_action
->fsf_req
->sbal_curr
, 0);
2775 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_READ
;
2776 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
2778 /* mark port as being closed */
2779 atomic_set_mask(ZFCP_STATUS_PORT_PHYS_CLOSING
,
2780 &erp_action
->port
->status
);
2781 /* save a pointer to this port */
2782 erp_action
->fsf_req
->data
= (unsigned long) erp_action
->port
;
2783 /* port to be closed */
2784 erp_action
->fsf_req
->qtcb
->header
.port_handle
=
2785 erp_action
->port
->handle
;
2786 erp_action
->fsf_req
->erp_action
= erp_action
;
2788 /* start QDIO request for this FSF request */
2789 retval
= zfcp_fsf_req_send(erp_action
->fsf_req
, &erp_action
->timer
);
2791 ZFCP_LOG_INFO("error: Could not send close physical port "
2792 "request (adapter %s, port 0x%016Lx)\n",
2793 zfcp_get_busid_by_adapter(erp_action
->adapter
),
2794 erp_action
->port
->wwpn
);
2795 zfcp_fsf_req_free(erp_action
->fsf_req
);
2796 erp_action
->fsf_req
= NULL
;
2800 ZFCP_LOG_TRACE("close physical port request initiated "
2801 "(adapter %s, port 0x%016Lx)\n",
2802 zfcp_get_busid_by_adapter(erp_action
->adapter
),
2803 erp_action
->port
->wwpn
);
2805 write_unlock_irqrestore(&erp_action
->adapter
->request_queue
.queue_lock
,
2811 * function: zfcp_fsf_close_physical_port_handler
2813 * purpose: is called for finished Close Physical Port FSF command
2818 zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req
*fsf_req
)
2820 int retval
= -EINVAL
;
2821 struct zfcp_port
*port
;
2822 struct zfcp_unit
*unit
;
2823 struct fsf_qtcb_header
*header
;
2824 u16 subtable
, rule
, counter
;
2826 port
= (struct zfcp_port
*) fsf_req
->data
;
2827 header
= &fsf_req
->qtcb
->header
;
2829 if (fsf_req
->status
& ZFCP_STATUS_FSFREQ_ERROR
) {
2830 /* don't change port status in our bookkeeping */
2831 goto skip_fsfstatus
;
2834 /* evaluate FSF status in QTCB */
2835 switch (header
->fsf_status
) {
2837 case FSF_PORT_HANDLE_NOT_VALID
:
2838 ZFCP_LOG_INFO("Temporary port identifier 0x%x invalid"
2839 "(adapter %s, port 0x%016Lx). "
2840 "This may happen occasionally.\n",
2842 zfcp_get_busid_by_port(port
),
2844 ZFCP_LOG_DEBUG("status qualifier:\n");
2845 ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG
,
2846 (char *) &header
->fsf_status_qual
,
2847 sizeof (union fsf_status_qual
));
2848 debug_text_event(fsf_req
->adapter
->erp_dbf
, 1,
2850 zfcp_erp_adapter_reopen(port
->adapter
, 0);
2851 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
2854 case FSF_ACCESS_DENIED
:
2855 ZFCP_LOG_NORMAL("Access denied, cannot close "
2856 "physical port 0x%016Lx on adapter %s\n",
2857 port
->wwpn
, zfcp_get_busid_by_port(port
));
2858 for (counter
= 0; counter
< 2; counter
++) {
2859 subtable
= header
->fsf_status_qual
.halfword
[counter
* 2];
2860 rule
= header
->fsf_status_qual
.halfword
[counter
* 2 + 1];
2862 case FSF_SQ_CFDC_SUBTABLE_OS
:
2863 case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN
:
2864 case FSF_SQ_CFDC_SUBTABLE_PORT_DID
:
2865 case FSF_SQ_CFDC_SUBTABLE_LUN
:
2866 ZFCP_LOG_INFO("Access denied (%s rule %d)\n",
2867 zfcp_act_subtable_type
[subtable
], rule
);
2871 debug_text_event(fsf_req
->adapter
->erp_dbf
, 1, "fsf_s_access");
2872 zfcp_erp_port_access_denied(port
);
2873 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
2876 case FSF_PORT_BOXED
:
2877 ZFCP_LOG_DEBUG("The remote port 0x%016Lx on adapter "
2878 "%s needs to be reopened but it was attempted "
2879 "to close it physically.\n",
2881 zfcp_get_busid_by_port(port
));
2882 debug_text_event(fsf_req
->adapter
->erp_dbf
, 1, "fsf_s_pboxed");
2883 zfcp_erp_port_boxed(port
);
2884 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
|
2885 ZFCP_STATUS_FSFREQ_RETRY
;
2888 case FSF_ADAPTER_STATUS_AVAILABLE
:
2889 switch (header
->fsf_status_qual
.word
[0]) {
2890 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE
:
2891 debug_text_event(fsf_req
->adapter
->erp_dbf
, 1,
2893 /* This will now be escalated by ERP */
2894 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
2896 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED
:
2897 /* ERP strategy will escalate */
2898 debug_text_event(fsf_req
->adapter
->erp_dbf
, 1,
2900 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
2904 ("bug: Wrong status qualifier 0x%x arrived.\n",
2905 header
->fsf_status_qual
.word
[0]);
2906 debug_text_event(fsf_req
->adapter
->erp_dbf
, 0,
2909 fsf_req
->adapter
->erp_dbf
, 0,
2910 &header
->fsf_status_qual
.word
[0], sizeof (u32
));
2916 ZFCP_LOG_DEBUG("Remote port 0x%016Lx via adapter %s "
2917 "physically closed, port handle 0x%x\n",
2919 zfcp_get_busid_by_port(port
), port
->handle
);
2920 /* can't use generic zfcp_erp_modify_port_status because
2921 * ZFCP_STATUS_COMMON_OPEN must not be reset for the port
2923 atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN
, &port
->status
);
2924 list_for_each_entry(unit
, &port
->unit_list_head
, list
)
2925 atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN
, &unit
->status
);
2930 ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented "
2931 "(debug info 0x%x)\n",
2932 header
->fsf_status
);
2933 debug_text_event(fsf_req
->adapter
->erp_dbf
, 0, "fsf_s_inval:");
2934 debug_exception(fsf_req
->adapter
->erp_dbf
, 0,
2935 &header
->fsf_status
, sizeof (u32
));
2940 atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_CLOSING
, &port
->status
);
2945 * function: zfcp_fsf_open_unit
2951 * assumptions: This routine does not check whether the associated
2952 * remote port has already been opened. This should be
2953 * done by calling routines. Otherwise some status
2954 * may be presented by FSF
2957 zfcp_fsf_open_unit(struct zfcp_erp_action
*erp_action
)
2959 volatile struct qdio_buffer_element
*sbale
;
2960 unsigned long lock_flags
;
2963 /* setup new FSF request */
2964 retval
= zfcp_fsf_req_create(erp_action
->adapter
,
2966 ZFCP_WAIT_FOR_SBAL
| ZFCP_REQ_AUTO_CLEANUP
,
2967 erp_action
->adapter
->pool
.fsf_req_erp
,
2968 &lock_flags
, &(erp_action
->fsf_req
));
2970 ZFCP_LOG_INFO("error: Could not create open unit request for "
2971 "unit 0x%016Lx on port 0x%016Lx on adapter %s.\n",
2972 erp_action
->unit
->fcp_lun
,
2973 erp_action
->unit
->port
->wwpn
,
2974 zfcp_get_busid_by_adapter(erp_action
->adapter
));
2978 sbale
= zfcp_qdio_sbale_req(erp_action
->fsf_req
,
2979 erp_action
->fsf_req
->sbal_curr
, 0);
2980 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_READ
;
2981 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
2983 erp_action
->fsf_req
->qtcb
->header
.port_handle
=
2984 erp_action
->port
->handle
;
2985 erp_action
->fsf_req
->qtcb
->bottom
.support
.fcp_lun
=
2986 erp_action
->unit
->fcp_lun
;
2987 if (!(erp_action
->adapter
->connection_features
& FSF_FEATURE_NPIV_MODE
))
2988 erp_action
->fsf_req
->qtcb
->bottom
.support
.option
=
2989 FSF_OPEN_LUN_SUPPRESS_BOXING
;
2990 atomic_set_mask(ZFCP_STATUS_COMMON_OPENING
, &erp_action
->unit
->status
);
2991 erp_action
->fsf_req
->data
= (unsigned long) erp_action
->unit
;
2992 erp_action
->fsf_req
->erp_action
= erp_action
;
2994 /* start QDIO request for this FSF request */
2995 retval
= zfcp_fsf_req_send(erp_action
->fsf_req
, &erp_action
->timer
);
2997 ZFCP_LOG_INFO("error: Could not send an open unit request "
2998 "on the adapter %s, port 0x%016Lx for "
3000 zfcp_get_busid_by_adapter(erp_action
->adapter
),
3001 erp_action
->port
->wwpn
,
3002 erp_action
->unit
->fcp_lun
);
3003 zfcp_fsf_req_free(erp_action
->fsf_req
);
3004 erp_action
->fsf_req
= NULL
;
3008 ZFCP_LOG_TRACE("Open LUN request initiated (adapter %s, "
3009 "port 0x%016Lx, unit 0x%016Lx)\n",
3010 zfcp_get_busid_by_adapter(erp_action
->adapter
),
3011 erp_action
->port
->wwpn
, erp_action
->unit
->fcp_lun
);
3013 write_unlock_irqrestore(&erp_action
->adapter
->request_queue
.queue_lock
,
3019 * function: zfcp_fsf_open_unit_handler
3021 * purpose: is called for finished Open LUN command
3026 zfcp_fsf_open_unit_handler(struct zfcp_fsf_req
*fsf_req
)
3028 int retval
= -EINVAL
;
3029 struct zfcp_adapter
*adapter
;
3030 struct zfcp_unit
*unit
;
3031 struct fsf_qtcb_header
*header
;
3032 struct fsf_qtcb_bottom_support
*bottom
;
3033 struct fsf_queue_designator
*queue_designator
;
3034 u16 subtable
, rule
, counter
;
3035 int exclusive
, readwrite
;
3037 unit
= (struct zfcp_unit
*) fsf_req
->data
;
3039 if (fsf_req
->status
& ZFCP_STATUS_FSFREQ_ERROR
) {
3040 /* don't change unit status in our bookkeeping */
3041 goto skip_fsfstatus
;
3044 adapter
= fsf_req
->adapter
;
3045 header
= &fsf_req
->qtcb
->header
;
3046 bottom
= &fsf_req
->qtcb
->bottom
.support
;
3047 queue_designator
= &header
->fsf_status_qual
.fsf_queue_designator
;
3049 atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED
|
3050 ZFCP_STATUS_UNIT_SHARED
|
3051 ZFCP_STATUS_UNIT_READONLY
,
3054 /* evaluate FSF status in QTCB */
3055 switch (header
->fsf_status
) {
3057 case FSF_PORT_HANDLE_NOT_VALID
:
3058 ZFCP_LOG_INFO("Temporary port identifier 0x%x "
3059 "for port 0x%016Lx on adapter %s invalid "
3060 "This may happen occasionally\n",
3062 unit
->port
->wwpn
, zfcp_get_busid_by_unit(unit
));
3063 ZFCP_LOG_DEBUG("status qualifier:\n");
3064 ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG
,
3065 (char *) &header
->fsf_status_qual
,
3066 sizeof (union fsf_status_qual
));
3067 debug_text_event(adapter
->erp_dbf
, 1, "fsf_s_ph_nv");
3068 zfcp_erp_adapter_reopen(unit
->port
->adapter
, 0);
3069 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
3072 case FSF_LUN_ALREADY_OPEN
:
3073 ZFCP_LOG_NORMAL("bug: Attempted to open unit 0x%016Lx on "
3074 "remote port 0x%016Lx on adapter %s twice.\n",
3076 unit
->port
->wwpn
, zfcp_get_busid_by_unit(unit
));
3077 debug_text_exception(adapter
->erp_dbf
, 0,
3079 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
3082 case FSF_ACCESS_DENIED
:
3083 ZFCP_LOG_NORMAL("Access denied, cannot open unit 0x%016Lx on "
3084 "remote port 0x%016Lx on adapter %s\n",
3085 unit
->fcp_lun
, unit
->port
->wwpn
,
3086 zfcp_get_busid_by_unit(unit
));
3087 for (counter
= 0; counter
< 2; counter
++) {
3088 subtable
= header
->fsf_status_qual
.halfword
[counter
* 2];
3089 rule
= header
->fsf_status_qual
.halfword
[counter
* 2 + 1];
3091 case FSF_SQ_CFDC_SUBTABLE_OS
:
3092 case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN
:
3093 case FSF_SQ_CFDC_SUBTABLE_PORT_DID
:
3094 case FSF_SQ_CFDC_SUBTABLE_LUN
:
3095 ZFCP_LOG_INFO("Access denied (%s rule %d)\n",
3096 zfcp_act_subtable_type
[subtable
], rule
);
3100 debug_text_event(adapter
->erp_dbf
, 1, "fsf_s_access");
3101 zfcp_erp_unit_access_denied(unit
);
3102 atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED
, &unit
->status
);
3103 atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY
, &unit
->status
);
3104 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
3107 case FSF_PORT_BOXED
:
3108 ZFCP_LOG_DEBUG("The remote port 0x%016Lx on adapter %s "
3109 "needs to be reopened\n",
3110 unit
->port
->wwpn
, zfcp_get_busid_by_unit(unit
));
3111 debug_text_event(adapter
->erp_dbf
, 2, "fsf_s_pboxed");
3112 zfcp_erp_port_boxed(unit
->port
);
3113 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
|
3114 ZFCP_STATUS_FSFREQ_RETRY
;
3117 case FSF_LUN_SHARING_VIOLATION
:
3118 if (header
->fsf_status_qual
.word
[0] != 0) {
3119 ZFCP_LOG_NORMAL("FCP-LUN 0x%Lx at the remote port "
3121 "connected to the adapter %s "
3122 "is already in use in LPAR%d, CSS%d\n",
3125 zfcp_get_busid_by_unit(unit
),
3126 queue_designator
->hla
,
3127 queue_designator
->cssid
);
3129 subtable
= header
->fsf_status_qual
.halfword
[4];
3130 rule
= header
->fsf_status_qual
.halfword
[5];
3132 case FSF_SQ_CFDC_SUBTABLE_OS
:
3133 case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN
:
3134 case FSF_SQ_CFDC_SUBTABLE_PORT_DID
:
3135 case FSF_SQ_CFDC_SUBTABLE_LUN
:
3136 ZFCP_LOG_NORMAL("Access to FCP-LUN 0x%Lx at the "
3137 "remote port with WWPN 0x%Lx "
3138 "connected to the adapter %s "
3139 "is denied (%s rule %d)\n",
3142 zfcp_get_busid_by_unit(unit
),
3143 zfcp_act_subtable_type
[subtable
],
3148 ZFCP_LOG_DEBUG("status qualifier:\n");
3149 ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG
,
3150 (char *) &header
->fsf_status_qual
,
3151 sizeof (union fsf_status_qual
));
3152 debug_text_event(adapter
->erp_dbf
, 2,
3154 zfcp_erp_unit_access_denied(unit
);
3155 atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED
, &unit
->status
);
3156 atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY
, &unit
->status
);
3157 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
3160 case FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED
:
3161 ZFCP_LOG_INFO("error: The adapter ran out of resources. "
3162 "There is no handle (temporary port identifier) "
3163 "available for unit 0x%016Lx on port 0x%016Lx "
3167 zfcp_get_busid_by_unit(unit
));
3168 debug_text_event(adapter
->erp_dbf
, 1,
3170 zfcp_erp_unit_failed(unit
);
3171 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
3174 case FSF_ADAPTER_STATUS_AVAILABLE
:
3175 switch (header
->fsf_status_qual
.word
[0]) {
3176 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE
:
3177 /* Re-establish link to port */
3178 debug_text_event(adapter
->erp_dbf
, 1,
3180 zfcp_test_link(unit
->port
);
3181 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
3183 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED
:
3184 /* ERP strategy will escalate */
3185 debug_text_event(adapter
->erp_dbf
, 1,
3187 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
3191 ("bug: Wrong status qualifier 0x%x arrived.\n",
3192 header
->fsf_status_qual
.word
[0]);
3193 debug_text_event(adapter
->erp_dbf
, 0,
3195 debug_exception(adapter
->erp_dbf
, 0,
3196 &header
->fsf_status_qual
.word
[0],
3201 case FSF_INVALID_COMMAND_OPTION
:
3203 "Invalid option 0x%x has been specified "
3204 "in QTCB bottom sent to the adapter %s\n",
3206 zfcp_get_busid_by_adapter(adapter
));
3207 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
3212 /* save LUN handle assigned by FSF */
3213 unit
->handle
= header
->lun_handle
;
3214 ZFCP_LOG_TRACE("unit 0x%016Lx on remote port 0x%016Lx on "
3215 "adapter %s opened, port handle 0x%x\n",
3218 zfcp_get_busid_by_unit(unit
),
3220 /* mark unit as open */
3221 atomic_set_mask(ZFCP_STATUS_COMMON_OPEN
, &unit
->status
);
3223 if (!(adapter
->connection_features
& FSF_FEATURE_NPIV_MODE
) &&
3224 (adapter
->adapter_features
& FSF_FEATURE_LUN_SHARING
) &&
3225 (adapter
->ccw_device
->id
.dev_model
!= ZFCP_DEVICE_MODEL_PRIV
)) {
3226 exclusive
= (bottom
->lun_access_info
&
3227 FSF_UNIT_ACCESS_EXCLUSIVE
);
3228 readwrite
= (bottom
->lun_access_info
&
3229 FSF_UNIT_ACCESS_OUTBOUND_TRANSFER
);
3232 atomic_set_mask(ZFCP_STATUS_UNIT_SHARED
,
3236 atomic_set_mask(ZFCP_STATUS_UNIT_READONLY
,
3238 ZFCP_LOG_NORMAL("read-only access for unit "
3239 "(adapter %s, wwpn=0x%016Lx, "
3240 "fcp_lun=0x%016Lx)\n",
3241 zfcp_get_busid_by_unit(unit
),
3246 if (exclusive
&& !readwrite
) {
3247 ZFCP_LOG_NORMAL("exclusive access of read-only "
3248 "unit not supported\n");
3249 zfcp_erp_unit_failed(unit
);
3250 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
3251 zfcp_erp_unit_shutdown(unit
, 0);
3252 } else if (!exclusive
&& readwrite
) {
3253 ZFCP_LOG_NORMAL("shared access of read-write "
3254 "unit not supported\n");
3255 zfcp_erp_unit_failed(unit
);
3256 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
3257 zfcp_erp_unit_shutdown(unit
, 0);
3265 ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented "
3266 "(debug info 0x%x)\n",
3267 header
->fsf_status
);
3268 debug_text_event(adapter
->erp_dbf
, 0, "fsf_s_inval:");
3269 debug_exception(adapter
->erp_dbf
, 0,
3270 &header
->fsf_status
, sizeof (u32
));
3275 atomic_clear_mask(ZFCP_STATUS_COMMON_OPENING
, &unit
->status
);
3280 * function: zfcp_fsf_close_unit
3284 * returns: address of fsf_req - request successfully initiated
3287 * assumptions: This routine does not check whether the associated
3288 * remote port/lun has already been opened. This should be
3289 * done by calling routines. Otherwise some status
3290 * may be presented by FSF
3293 zfcp_fsf_close_unit(struct zfcp_erp_action
*erp_action
)
3295 volatile struct qdio_buffer_element
*sbale
;
3296 unsigned long lock_flags
;
3299 /* setup new FSF request */
3300 retval
= zfcp_fsf_req_create(erp_action
->adapter
,
3302 ZFCP_WAIT_FOR_SBAL
| ZFCP_REQ_AUTO_CLEANUP
,
3303 erp_action
->adapter
->pool
.fsf_req_erp
,
3304 &lock_flags
, &(erp_action
->fsf_req
));
3306 ZFCP_LOG_INFO("error: Could not create close unit request for "
3307 "unit 0x%016Lx on port 0x%016Lx on adapter %s.\n",
3308 erp_action
->unit
->fcp_lun
,
3309 erp_action
->port
->wwpn
,
3310 zfcp_get_busid_by_adapter(erp_action
->adapter
));
3314 sbale
= zfcp_qdio_sbale_req(erp_action
->fsf_req
,
3315 erp_action
->fsf_req
->sbal_curr
, 0);
3316 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_READ
;
3317 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
3319 erp_action
->fsf_req
->qtcb
->header
.port_handle
=
3320 erp_action
->port
->handle
;
3321 erp_action
->fsf_req
->qtcb
->header
.lun_handle
= erp_action
->unit
->handle
;
3322 atomic_set_mask(ZFCP_STATUS_COMMON_CLOSING
, &erp_action
->unit
->status
);
3323 erp_action
->fsf_req
->data
= (unsigned long) erp_action
->unit
;
3324 erp_action
->fsf_req
->erp_action
= erp_action
;
3326 /* start QDIO request for this FSF request */
3327 retval
= zfcp_fsf_req_send(erp_action
->fsf_req
, &erp_action
->timer
);
3329 ZFCP_LOG_INFO("error: Could not send a close unit request for "
3330 "unit 0x%016Lx on port 0x%016Lx onadapter %s.\n",
3331 erp_action
->unit
->fcp_lun
,
3332 erp_action
->port
->wwpn
,
3333 zfcp_get_busid_by_adapter(erp_action
->adapter
));
3334 zfcp_fsf_req_free(erp_action
->fsf_req
);
3335 erp_action
->fsf_req
= NULL
;
3339 ZFCP_LOG_TRACE("Close LUN request initiated (adapter %s, "
3340 "port 0x%016Lx, unit 0x%016Lx)\n",
3341 zfcp_get_busid_by_adapter(erp_action
->adapter
),
3342 erp_action
->port
->wwpn
, erp_action
->unit
->fcp_lun
);
3344 write_unlock_irqrestore(&erp_action
->adapter
->request_queue
.queue_lock
,
3350 * function: zfcp_fsf_close_unit_handler
3352 * purpose: is called for finished Close LUN FSF command
3357 zfcp_fsf_close_unit_handler(struct zfcp_fsf_req
*fsf_req
)
3359 int retval
= -EINVAL
;
3360 struct zfcp_unit
*unit
;
3362 unit
= (struct zfcp_unit
*) fsf_req
->data
;
3364 if (fsf_req
->status
& ZFCP_STATUS_FSFREQ_ERROR
) {
3365 /* don't change unit status in our bookkeeping */
3366 goto skip_fsfstatus
;
3369 /* evaluate FSF status in QTCB */
3370 switch (fsf_req
->qtcb
->header
.fsf_status
) {
3372 case FSF_PORT_HANDLE_NOT_VALID
:
3373 ZFCP_LOG_INFO("Temporary port identifier 0x%x for port "
3374 "0x%016Lx on adapter %s invalid. This may "
3375 "happen in rare circumstances\n",
3378 zfcp_get_busid_by_unit(unit
));
3379 ZFCP_LOG_DEBUG("status qualifier:\n");
3380 ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG
,
3381 (char *) &fsf_req
->qtcb
->header
.fsf_status_qual
,
3382 sizeof (union fsf_status_qual
));
3383 debug_text_event(fsf_req
->adapter
->erp_dbf
, 1,
3385 zfcp_erp_adapter_reopen(unit
->port
->adapter
, 0);
3386 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
3389 case FSF_LUN_HANDLE_NOT_VALID
:
3390 ZFCP_LOG_INFO("Temporary LUN identifier 0x%x of unit "
3391 "0x%016Lx on port 0x%016Lx on adapter %s is "
3392 "invalid. This may happen occasionally.\n",
3396 zfcp_get_busid_by_unit(unit
));
3397 ZFCP_LOG_DEBUG("Status qualifier data:\n");
3398 ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG
,
3399 (char *) &fsf_req
->qtcb
->header
.fsf_status_qual
,
3400 sizeof (union fsf_status_qual
));
3401 debug_text_event(fsf_req
->adapter
->erp_dbf
, 1,
3403 zfcp_erp_port_reopen(unit
->port
, 0);
3404 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
3407 case FSF_PORT_BOXED
:
3408 ZFCP_LOG_DEBUG("The remote port 0x%016Lx on adapter %s "
3409 "needs to be reopened\n",
3411 zfcp_get_busid_by_unit(unit
));
3412 debug_text_event(fsf_req
->adapter
->erp_dbf
, 2, "fsf_s_pboxed");
3413 zfcp_erp_port_boxed(unit
->port
);
3414 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
|
3415 ZFCP_STATUS_FSFREQ_RETRY
;
3418 case FSF_ADAPTER_STATUS_AVAILABLE
:
3419 switch (fsf_req
->qtcb
->header
.fsf_status_qual
.word
[0]) {
3420 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE
:
3421 /* re-establish link to port */
3422 debug_text_event(fsf_req
->adapter
->erp_dbf
, 1,
3424 zfcp_test_link(unit
->port
);
3425 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
3427 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED
:
3428 /* ERP strategy will escalate */
3429 debug_text_event(fsf_req
->adapter
->erp_dbf
, 1,
3431 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
3435 ("bug: Wrong status qualifier 0x%x arrived.\n",
3436 fsf_req
->qtcb
->header
.fsf_status_qual
.word
[0]);
3437 debug_text_event(fsf_req
->adapter
->erp_dbf
, 0,
3440 fsf_req
->adapter
->erp_dbf
, 0,
3441 &fsf_req
->qtcb
->header
.fsf_status_qual
.word
[0],
3448 ZFCP_LOG_TRACE("unit 0x%016Lx on port 0x%016Lx on adapter %s "
3449 "closed, port handle 0x%x\n",
3452 zfcp_get_busid_by_unit(unit
),
3454 /* mark unit as closed */
3455 atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN
, &unit
->status
);
3460 ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented "
3461 "(debug info 0x%x)\n",
3462 fsf_req
->qtcb
->header
.fsf_status
);
3463 debug_text_event(fsf_req
->adapter
->erp_dbf
, 0, "fsf_s_inval:");
3464 debug_exception(fsf_req
->adapter
->erp_dbf
, 0,
3465 &fsf_req
->qtcb
->header
.fsf_status
,
3471 atomic_clear_mask(ZFCP_STATUS_COMMON_CLOSING
, &unit
->status
);
3476 * zfcp_fsf_send_fcp_command_task - initiate an FCP command (for a SCSI command)
3477 * @adapter: adapter where scsi command is issued
3478 * @unit: unit where command is sent to
3479 * @scsi_cmnd: scsi command to be sent
3480 * @timer: timer to be started when request is initiated
3481 * @req_flags: flags for fsf_request
3484 zfcp_fsf_send_fcp_command_task(struct zfcp_adapter
*adapter
,
3485 struct zfcp_unit
*unit
,
3486 struct scsi_cmnd
* scsi_cmnd
,
3487 struct timer_list
*timer
, int req_flags
)
3489 struct zfcp_fsf_req
*fsf_req
= NULL
;
3490 struct fcp_cmnd_iu
*fcp_cmnd_iu
;
3491 unsigned int sbtype
;
3492 unsigned long lock_flags
;
3497 /* setup new FSF request */
3498 retval
= zfcp_fsf_req_create(adapter
, FSF_QTCB_FCP_CMND
, req_flags
,
3499 adapter
->pool
.fsf_req_scsi
,
3500 &lock_flags
, &fsf_req
);
3501 if (unlikely(retval
< 0)) {
3502 ZFCP_LOG_DEBUG("error: Could not create FCP command request "
3503 "for unit 0x%016Lx on port 0x%016Lx on "
3507 zfcp_get_busid_by_adapter(adapter
));
3508 goto failed_req_create
;
3511 zfcp_unit_get(unit
);
3512 fsf_req
->unit
= unit
;
3514 /* associate FSF request with SCSI request (for look up on abort) */
3515 scsi_cmnd
->host_scribble
= (char *) fsf_req
;
3517 /* associate SCSI command with FSF request */
3518 fsf_req
->data
= (unsigned long) scsi_cmnd
;
3520 /* set handles of unit and its parent port in QTCB */
3521 fsf_req
->qtcb
->header
.lun_handle
= unit
->handle
;
3522 fsf_req
->qtcb
->header
.port_handle
= unit
->port
->handle
;
3524 /* FSF does not define the structure of the FCP_CMND IU */
3525 fcp_cmnd_iu
= (struct fcp_cmnd_iu
*)
3526 &(fsf_req
->qtcb
->bottom
.io
.fcp_cmnd
);
3529 * set depending on data direction:
3530 * data direction bits in SBALE (SB Type)
3531 * data direction bits in QTCB
3532 * data direction bits in FCP_CMND IU
3534 switch (scsi_cmnd
->sc_data_direction
) {
3536 fsf_req
->qtcb
->bottom
.io
.data_direction
= FSF_DATADIR_CMND
;
3539 * what is the correct type for commands
3540 * without 'real' data buffers?
3542 sbtype
= SBAL_FLAGS0_TYPE_READ
;
3544 case DMA_FROM_DEVICE
:
3545 fsf_req
->qtcb
->bottom
.io
.data_direction
= FSF_DATADIR_READ
;
3546 sbtype
= SBAL_FLAGS0_TYPE_READ
;
3547 fcp_cmnd_iu
->rddata
= 1;
3550 fsf_req
->qtcb
->bottom
.io
.data_direction
= FSF_DATADIR_WRITE
;
3551 sbtype
= SBAL_FLAGS0_TYPE_WRITE
;
3552 fcp_cmnd_iu
->wddata
= 1;
3554 case DMA_BIDIRECTIONAL
:
3557 * dummy, catch this condition earlier
3558 * in zfcp_scsi_queuecommand
3560 goto failed_scsi_cmnd
;
3563 /* set FC service class in QTCB (3 per default) */
3564 fsf_req
->qtcb
->bottom
.io
.service_class
= adapter
->fc_service_class
;
3566 /* set FCP_LUN in FCP_CMND IU in QTCB */
3567 fcp_cmnd_iu
->fcp_lun
= unit
->fcp_lun
;
3569 mask
= ZFCP_STATUS_UNIT_READONLY
| ZFCP_STATUS_UNIT_SHARED
;
3571 /* set task attributes in FCP_CMND IU in QTCB */
3572 if (likely((scsi_cmnd
->device
->simple_tags
) ||
3573 (atomic_test_mask(mask
, &unit
->status
))))
3574 fcp_cmnd_iu
->task_attribute
= SIMPLE_Q
;
3576 fcp_cmnd_iu
->task_attribute
= UNTAGGED
;
3578 /* set additional length of FCP_CDB in FCP_CMND IU in QTCB, if needed */
3579 if (unlikely(scsi_cmnd
->cmd_len
> FCP_CDB_LENGTH
)) {
3580 fcp_cmnd_iu
->add_fcp_cdb_length
3581 = (scsi_cmnd
->cmd_len
- FCP_CDB_LENGTH
) >> 2;
3582 ZFCP_LOG_TRACE("SCSI CDB length is 0x%x, "
3583 "additional FCP_CDB length is 0x%x "
3584 "(shifted right 2 bits)\n",
3586 fcp_cmnd_iu
->add_fcp_cdb_length
);
3589 * copy SCSI CDB (including additional length, if any) to
3590 * FCP_CDB in FCP_CMND IU in QTCB
3592 memcpy(fcp_cmnd_iu
->fcp_cdb
, scsi_cmnd
->cmnd
, scsi_cmnd
->cmd_len
);
3594 /* FCP CMND IU length in QTCB */
3595 fsf_req
->qtcb
->bottom
.io
.fcp_cmnd_length
=
3596 sizeof (struct fcp_cmnd_iu
) +
3597 fcp_cmnd_iu
->add_fcp_cdb_length
+ sizeof (fcp_dl_t
);
3599 /* generate SBALEs from data buffer */
3600 real_bytes
= zfcp_qdio_sbals_from_scsicmnd(fsf_req
, sbtype
, scsi_cmnd
);
3601 if (unlikely(real_bytes
< 0)) {
3602 if (fsf_req
->sbal_number
< ZFCP_MAX_SBALS_PER_REQ
) {
3604 "Data did not fit into available buffer(s), "
3605 "waiting for more...\n");
3608 ZFCP_LOG_NORMAL("error: No truncation implemented but "
3609 "required. Shutting down unit "
3610 "(adapter %s, port 0x%016Lx, "
3612 zfcp_get_busid_by_unit(unit
),
3615 zfcp_erp_unit_shutdown(unit
, 0);
3621 /* set length of FCP data length in FCP_CMND IU in QTCB */
3622 zfcp_set_fcp_dl(fcp_cmnd_iu
, real_bytes
);
3624 ZFCP_LOG_DEBUG("Sending SCSI command:\n");
3625 ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG
,
3626 (char *) scsi_cmnd
->cmnd
, scsi_cmnd
->cmd_len
);
3629 * start QDIO request for this FSF request
3630 * covered by an SBALE)
3632 retval
= zfcp_fsf_req_send(fsf_req
, timer
);
3633 if (unlikely(retval
< 0)) {
3634 ZFCP_LOG_INFO("error: Could not send FCP command request "
3635 "on adapter %s, port 0x%016Lx, unit 0x%016Lx\n",
3636 zfcp_get_busid_by_adapter(adapter
),
3642 ZFCP_LOG_TRACE("Send FCP Command initiated (adapter %s, "
3643 "port 0x%016Lx, unit 0x%016Lx)\n",
3644 zfcp_get_busid_by_adapter(adapter
),
3652 zfcp_unit_put(unit
);
3653 zfcp_fsf_req_free(fsf_req
);
3655 scsi_cmnd
->host_scribble
= NULL
;
3658 write_unlock_irqrestore(&adapter
->request_queue
.queue_lock
, lock_flags
);
3663 * function: zfcp_fsf_send_fcp_command_task_management
3669 * FIXME(design): should be watched by a timeout!!!
3670 * FIXME(design) shouldn't this be modified to return an int
3671 * also...don't know how though
3674 struct zfcp_fsf_req
*
3675 zfcp_fsf_send_fcp_command_task_management(struct zfcp_adapter
*adapter
,
3676 struct zfcp_unit
*unit
,
3677 u8 tm_flags
, int req_flags
)
3679 struct zfcp_fsf_req
*fsf_req
= NULL
;
3681 struct fcp_cmnd_iu
*fcp_cmnd_iu
;
3682 unsigned long lock_flags
;
3683 volatile struct qdio_buffer_element
*sbale
;
3685 /* setup new FSF request */
3686 retval
= zfcp_fsf_req_create(adapter
, FSF_QTCB_FCP_CMND
, req_flags
,
3687 adapter
->pool
.fsf_req_scsi
,
3688 &lock_flags
, &fsf_req
);
3690 ZFCP_LOG_INFO("error: Could not create FCP command (task "
3691 "management) request for adapter %s, port "
3692 " 0x%016Lx, unit 0x%016Lx.\n",
3693 zfcp_get_busid_by_adapter(adapter
),
3694 unit
->port
->wwpn
, unit
->fcp_lun
);
3699 * Used to decide on proper handler in the return path,
3700 * could be either zfcp_fsf_send_fcp_command_task_handler or
3701 * zfcp_fsf_send_fcp_command_task_management_handler */
3703 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT
;
3706 * hold a pointer to the unit being target of this
3707 * task management request
3709 fsf_req
->data
= (unsigned long) unit
;
3711 /* set FSF related fields in QTCB */
3712 fsf_req
->qtcb
->header
.lun_handle
= unit
->handle
;
3713 fsf_req
->qtcb
->header
.port_handle
= unit
->port
->handle
;
3714 fsf_req
->qtcb
->bottom
.io
.data_direction
= FSF_DATADIR_CMND
;
3715 fsf_req
->qtcb
->bottom
.io
.service_class
= adapter
->fc_service_class
;
3716 fsf_req
->qtcb
->bottom
.io
.fcp_cmnd_length
=
3717 sizeof (struct fcp_cmnd_iu
) + sizeof (fcp_dl_t
);
3719 sbale
= zfcp_qdio_sbale_req(fsf_req
, fsf_req
->sbal_curr
, 0);
3720 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_WRITE
;
3721 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
3723 /* set FCP related fields in FCP_CMND IU in QTCB */
3724 fcp_cmnd_iu
= (struct fcp_cmnd_iu
*)
3725 &(fsf_req
->qtcb
->bottom
.io
.fcp_cmnd
);
3726 fcp_cmnd_iu
->fcp_lun
= unit
->fcp_lun
;
3727 fcp_cmnd_iu
->task_management_flags
= tm_flags
;
3729 /* start QDIO request for this FSF request */
3730 zfcp_fsf_start_scsi_er_timer(adapter
);
3731 retval
= zfcp_fsf_req_send(fsf_req
, NULL
);
3733 del_timer(&adapter
->scsi_er_timer
);
3734 ZFCP_LOG_INFO("error: Could not send an FCP-command (task "
3735 "management) on adapter %s, port 0x%016Lx for "
3736 "unit LUN 0x%016Lx\n",
3737 zfcp_get_busid_by_adapter(adapter
),
3740 zfcp_fsf_req_free(fsf_req
);
3745 ZFCP_LOG_TRACE("Send FCP Command (task management function) initiated "
3746 "(adapter %s, port 0x%016Lx, unit 0x%016Lx, "
3748 zfcp_get_busid_by_adapter(adapter
),
3753 write_unlock_irqrestore(&adapter
->request_queue
.queue_lock
, lock_flags
);
3758 * function: zfcp_fsf_send_fcp_command_handler
3760 * purpose: is called for finished Send FCP Command
3765 zfcp_fsf_send_fcp_command_handler(struct zfcp_fsf_req
*fsf_req
)
3767 int retval
= -EINVAL
;
3768 struct zfcp_unit
*unit
;
3769 struct fsf_qtcb_header
*header
;
3770 u16 subtable
, rule
, counter
;
3772 header
= &fsf_req
->qtcb
->header
;
3774 if (unlikely(fsf_req
->status
& ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT
))
3775 unit
= (struct zfcp_unit
*) fsf_req
->data
;
3777 unit
= fsf_req
->unit
;
3779 if (unlikely(fsf_req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)) {
3780 /* go directly to calls of special handlers */
3781 goto skip_fsfstatus
;
3784 /* evaluate FSF status in QTCB */
3785 switch (header
->fsf_status
) {
3787 case FSF_PORT_HANDLE_NOT_VALID
:
3788 ZFCP_LOG_INFO("Temporary port identifier 0x%x for port "
3789 "0x%016Lx on adapter %s invalid\n",
3791 unit
->port
->wwpn
, zfcp_get_busid_by_unit(unit
));
3792 ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG
,
3793 (char *) &header
->fsf_status_qual
,
3794 sizeof (union fsf_status_qual
));
3795 debug_text_event(fsf_req
->adapter
->erp_dbf
, 1,
3797 zfcp_erp_adapter_reopen(unit
->port
->adapter
, 0);
3798 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
3801 case FSF_LUN_HANDLE_NOT_VALID
:
3802 ZFCP_LOG_INFO("Temporary LUN identifier 0x%x for unit "
3803 "0x%016Lx on port 0x%016Lx on adapter %s is "
3804 "invalid. This may happen occasionally.\n",
3808 zfcp_get_busid_by_unit(unit
));
3809 ZFCP_LOG_NORMAL("Status qualifier data:\n");
3810 ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_NORMAL
,
3811 (char *) &header
->fsf_status_qual
,
3812 sizeof (union fsf_status_qual
));
3813 debug_text_event(fsf_req
->adapter
->erp_dbf
, 1,
3815 zfcp_erp_port_reopen(unit
->port
, 0);
3816 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
3819 case FSF_HANDLE_MISMATCH
:
3820 ZFCP_LOG_NORMAL("bug: The port handle 0x%x has changed "
3821 "unexpectedly. (adapter %s, port 0x%016Lx, "
3824 zfcp_get_busid_by_unit(unit
),
3827 ZFCP_LOG_NORMAL("status qualifier:\n");
3828 ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_NORMAL
,
3829 (char *) &header
->fsf_status_qual
,
3830 sizeof (union fsf_status_qual
));
3831 debug_text_event(fsf_req
->adapter
->erp_dbf
, 1,
3833 zfcp_erp_adapter_reopen(unit
->port
->adapter
, 0);
3834 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
3837 case FSF_SERVICE_CLASS_NOT_SUPPORTED
:
3838 if (fsf_req
->adapter
->fc_service_class
<= 3) {
3839 ZFCP_LOG_NORMAL("error: The adapter %s does "
3840 "not support fibrechannel class %d.\n",
3841 zfcp_get_busid_by_unit(unit
),
3842 fsf_req
->adapter
->fc_service_class
);
3844 ZFCP_LOG_NORMAL("bug: The fibrechannel class at "
3845 "adapter %s is invalid. "
3846 "(debug info %d)\n",
3847 zfcp_get_busid_by_unit(unit
),
3848 fsf_req
->adapter
->fc_service_class
);
3850 /* stop operation for this adapter */
3851 debug_text_exception(fsf_req
->adapter
->erp_dbf
, 0,
3852 "fsf_s_class_nsup");
3853 zfcp_erp_adapter_shutdown(unit
->port
->adapter
, 0);
3854 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
3857 case FSF_FCPLUN_NOT_VALID
:
3858 ZFCP_LOG_NORMAL("bug: unit 0x%016Lx on port 0x%016Lx on "
3859 "adapter %s does not have correct unit "
3863 zfcp_get_busid_by_unit(unit
),
3865 ZFCP_LOG_DEBUG("status qualifier:\n");
3866 ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG
,
3867 (char *) &header
->fsf_status_qual
,
3868 sizeof (union fsf_status_qual
));
3869 debug_text_event(fsf_req
->adapter
->erp_dbf
, 1,
3870 "fsf_s_fcp_lun_nv");
3871 zfcp_erp_port_reopen(unit
->port
, 0);
3872 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
3875 case FSF_ACCESS_DENIED
:
3876 ZFCP_LOG_NORMAL("Access denied, cannot send FCP command to "
3877 "unit 0x%016Lx on port 0x%016Lx on "
3878 "adapter %s\n", unit
->fcp_lun
, unit
->port
->wwpn
,
3879 zfcp_get_busid_by_unit(unit
));
3880 for (counter
= 0; counter
< 2; counter
++) {
3881 subtable
= header
->fsf_status_qual
.halfword
[counter
* 2];
3882 rule
= header
->fsf_status_qual
.halfword
[counter
* 2 + 1];
3884 case FSF_SQ_CFDC_SUBTABLE_OS
:
3885 case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN
:
3886 case FSF_SQ_CFDC_SUBTABLE_PORT_DID
:
3887 case FSF_SQ_CFDC_SUBTABLE_LUN
:
3888 ZFCP_LOG_INFO("Access denied (%s rule %d)\n",
3889 zfcp_act_subtable_type
[subtable
], rule
);
3893 debug_text_event(fsf_req
->adapter
->erp_dbf
, 1, "fsf_s_access");
3894 zfcp_erp_unit_access_denied(unit
);
3895 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
3898 case FSF_DIRECTION_INDICATOR_NOT_VALID
:
3899 ZFCP_LOG_INFO("bug: Invalid data direction given for unit "
3900 "0x%016Lx on port 0x%016Lx on adapter %s "
3901 "(debug info %d)\n",
3904 zfcp_get_busid_by_unit(unit
),
3905 fsf_req
->qtcb
->bottom
.io
.data_direction
);
3906 /* stop operation for this adapter */
3907 debug_text_event(fsf_req
->adapter
->erp_dbf
, 0,
3908 "fsf_s_dir_ind_nv");
3909 zfcp_erp_adapter_shutdown(unit
->port
->adapter
, 0);
3910 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
3913 case FSF_CMND_LENGTH_NOT_VALID
:
3915 ("bug: An invalid control-data-block length field "
3916 "was found in a command for unit 0x%016Lx on port "
3917 "0x%016Lx on adapter %s " "(debug info %d)\n",
3918 unit
->fcp_lun
, unit
->port
->wwpn
,
3919 zfcp_get_busid_by_unit(unit
),
3920 fsf_req
->qtcb
->bottom
.io
.fcp_cmnd_length
);
3921 /* stop operation for this adapter */
3922 debug_text_event(fsf_req
->adapter
->erp_dbf
, 0,
3923 "fsf_s_cmd_len_nv");
3924 zfcp_erp_adapter_shutdown(unit
->port
->adapter
, 0);
3925 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
3928 case FSF_PORT_BOXED
:
3929 ZFCP_LOG_DEBUG("The remote port 0x%016Lx on adapter %s "
3930 "needs to be reopened\n",
3931 unit
->port
->wwpn
, zfcp_get_busid_by_unit(unit
));
3932 debug_text_event(fsf_req
->adapter
->erp_dbf
, 2, "fsf_s_pboxed");
3933 zfcp_erp_port_boxed(unit
->port
);
3934 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
|
3935 ZFCP_STATUS_FSFREQ_RETRY
;
3939 ZFCP_LOG_NORMAL("unit needs to be reopened (adapter %s, "
3940 "wwpn=0x%016Lx, fcp_lun=0x%016Lx)\n",
3941 zfcp_get_busid_by_unit(unit
),
3942 unit
->port
->wwpn
, unit
->fcp_lun
);
3943 debug_text_event(fsf_req
->adapter
->erp_dbf
, 1, "fsf_s_lboxed");
3944 zfcp_erp_unit_boxed(unit
);
3945 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
3946 | ZFCP_STATUS_FSFREQ_RETRY
;
3949 case FSF_ADAPTER_STATUS_AVAILABLE
:
3950 switch (header
->fsf_status_qual
.word
[0]) {
3951 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE
:
3952 /* re-establish link to port */
3953 debug_text_event(fsf_req
->adapter
->erp_dbf
, 1,
3955 zfcp_test_link(unit
->port
);
3957 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED
:
3958 /* FIXME(hw) need proper specs for proper action */
3959 /* let scsi stack deal with retries and escalation */
3960 debug_text_event(fsf_req
->adapter
->erp_dbf
, 1,
3965 ("Unknown status qualifier 0x%x arrived.\n",
3966 header
->fsf_status_qual
.word
[0]);
3967 debug_text_event(fsf_req
->adapter
->erp_dbf
, 0,
3969 debug_exception(fsf_req
->adapter
->erp_dbf
, 0,
3970 &header
->fsf_status_qual
.word
[0],
3974 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
3980 case FSF_FCP_RSP_AVAILABLE
:
3984 debug_text_event(fsf_req
->adapter
->erp_dbf
, 0, "fsf_s_inval:");
3985 debug_exception(fsf_req
->adapter
->erp_dbf
, 0,
3986 &header
->fsf_status
, sizeof(u32
));
3991 if (fsf_req
->status
& ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT
) {
3993 zfcp_fsf_send_fcp_command_task_management_handler(fsf_req
);
3995 retval
= zfcp_fsf_send_fcp_command_task_handler(fsf_req
);
3996 fsf_req
->unit
= NULL
;
3997 zfcp_unit_put(unit
);
4003 * function: zfcp_fsf_send_fcp_command_task_handler
4005 * purpose: evaluates FCP_RSP IU
4010 zfcp_fsf_send_fcp_command_task_handler(struct zfcp_fsf_req
*fsf_req
)
4013 struct scsi_cmnd
*scpnt
;
4014 struct fcp_rsp_iu
*fcp_rsp_iu
= (struct fcp_rsp_iu
*)
4015 &(fsf_req
->qtcb
->bottom
.io
.fcp_rsp
);
4016 struct fcp_cmnd_iu
*fcp_cmnd_iu
= (struct fcp_cmnd_iu
*)
4017 &(fsf_req
->qtcb
->bottom
.io
.fcp_cmnd
);
4019 char *fcp_rsp_info
= zfcp_get_fcp_rsp_info_ptr(fcp_rsp_iu
);
4020 unsigned long flags
;
4021 struct zfcp_unit
*unit
= fsf_req
->unit
;
4023 read_lock_irqsave(&fsf_req
->adapter
->abort_lock
, flags
);
4024 scpnt
= (struct scsi_cmnd
*) fsf_req
->data
;
4025 if (unlikely(!scpnt
)) {
4027 ("Command with fsf_req %p is not associated to "
4028 "a scsi command anymore. Aborted?\n", fsf_req
);
4031 if (unlikely(fsf_req
->status
& ZFCP_STATUS_FSFREQ_ABORTED
)) {
4032 /* FIXME: (design) mid-layer should handle DID_ABORT like
4033 * DID_SOFT_ERROR by retrying the request for devices
4034 * that allow retries.
4036 ZFCP_LOG_DEBUG("Setting DID_SOFT_ERROR and SUGGEST_RETRY\n");
4037 set_host_byte(&scpnt
->result
, DID_SOFT_ERROR
);
4038 set_driver_byte(&scpnt
->result
, SUGGEST_RETRY
);
4039 goto skip_fsfstatus
;
4042 if (unlikely(fsf_req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)) {
4043 ZFCP_LOG_DEBUG("Setting DID_ERROR\n");
4044 set_host_byte(&scpnt
->result
, DID_ERROR
);
4045 goto skip_fsfstatus
;
4048 /* set message byte of result in SCSI command */
4049 scpnt
->result
|= COMMAND_COMPLETE
<< 8;
4052 * copy SCSI status code of FCP_STATUS of FCP_RSP IU to status byte
4053 * of result in SCSI command
4055 scpnt
->result
|= fcp_rsp_iu
->scsi_status
;
4056 if (unlikely(fcp_rsp_iu
->scsi_status
)) {
4058 ZFCP_LOG_DEBUG("status for SCSI Command:\n");
4059 ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG
,
4060 scpnt
->cmnd
, scpnt
->cmd_len
);
4061 ZFCP_LOG_DEBUG("SCSI status code 0x%x\n",
4062 fcp_rsp_iu
->scsi_status
);
4063 ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG
,
4064 (void *) fcp_rsp_iu
, sizeof (struct fcp_rsp_iu
));
4065 ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG
,
4066 zfcp_get_fcp_sns_info_ptr(fcp_rsp_iu
),
4067 fcp_rsp_iu
->fcp_sns_len
);
4070 /* check FCP_RSP_INFO */
4071 if (unlikely(fcp_rsp_iu
->validity
.bits
.fcp_rsp_len_valid
)) {
4072 ZFCP_LOG_DEBUG("rsp_len is valid\n");
4073 switch (fcp_rsp_info
[3]) {
4076 ZFCP_LOG_TRACE("no failure or Task Management "
4077 "Function complete\n");
4078 set_host_byte(&scpnt
->result
, DID_OK
);
4080 case RSP_CODE_LENGTH_MISMATCH
:
4082 ZFCP_LOG_NORMAL("bug: FCP response code indictates "
4083 "that the fibrechannel protocol data "
4084 "length differs from the burst length. "
4085 "The problem occured on unit 0x%016Lx "
4086 "on port 0x%016Lx on adapter %s",
4089 zfcp_get_busid_by_unit(unit
));
4090 /* dump SCSI CDB as prepared by zfcp */
4091 ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG
,
4092 (char *) &fsf_req
->qtcb
->
4093 bottom
.io
.fcp_cmnd
, FSF_FCP_CMND_SIZE
);
4094 set_host_byte(&scpnt
->result
, DID_ERROR
);
4095 goto skip_fsfstatus
;
4096 case RSP_CODE_FIELD_INVALID
:
4097 /* driver or hardware bug */
4098 ZFCP_LOG_NORMAL("bug: FCP response code indictates "
4099 "that the fibrechannel protocol data "
4100 "fields were incorrectly set up. "
4101 "The problem occured on the unit "
4102 "0x%016Lx on port 0x%016Lx on "
4106 zfcp_get_busid_by_unit(unit
));
4107 /* dump SCSI CDB as prepared by zfcp */
4108 ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG
,
4109 (char *) &fsf_req
->qtcb
->
4110 bottom
.io
.fcp_cmnd
, FSF_FCP_CMND_SIZE
);
4111 set_host_byte(&scpnt
->result
, DID_ERROR
);
4112 goto skip_fsfstatus
;
4113 case RSP_CODE_RO_MISMATCH
:
4115 ZFCP_LOG_NORMAL("bug: The FCP response code indicates "
4116 "that conflicting values for the "
4117 "fibrechannel payload offset from the "
4118 "header were found. "
4119 "The problem occured on unit 0x%016Lx "
4120 "on port 0x%016Lx on adapter %s.\n",
4123 zfcp_get_busid_by_unit(unit
));
4124 /* dump SCSI CDB as prepared by zfcp */
4125 ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG
,
4126 (char *) &fsf_req
->qtcb
->
4127 bottom
.io
.fcp_cmnd
, FSF_FCP_CMND_SIZE
);
4128 set_host_byte(&scpnt
->result
, DID_ERROR
);
4129 goto skip_fsfstatus
;
4131 ZFCP_LOG_NORMAL("bug: An invalid FCP response "
4132 "code was detected for a command. "
4133 "The problem occured on the unit "
4134 "0x%016Lx on port 0x%016Lx on "
4135 "adapter %s (debug info 0x%x)\n",
4138 zfcp_get_busid_by_unit(unit
),
4140 /* dump SCSI CDB as prepared by zfcp */
4141 ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG
,
4142 (char *) &fsf_req
->qtcb
->
4143 bottom
.io
.fcp_cmnd
, FSF_FCP_CMND_SIZE
);
4144 set_host_byte(&scpnt
->result
, DID_ERROR
);
4145 goto skip_fsfstatus
;
4149 /* check for sense data */
4150 if (unlikely(fcp_rsp_iu
->validity
.bits
.fcp_sns_len_valid
)) {
4151 sns_len
= FSF_FCP_RSP_SIZE
-
4152 sizeof (struct fcp_rsp_iu
) + fcp_rsp_iu
->fcp_rsp_len
;
4153 ZFCP_LOG_TRACE("room for %i bytes sense data in QTCB\n",
4155 sns_len
= min(sns_len
, (u32
) SCSI_SENSE_BUFFERSIZE
);
4156 ZFCP_LOG_TRACE("room for %i bytes sense data in SCSI command\n",
4157 SCSI_SENSE_BUFFERSIZE
);
4158 sns_len
= min(sns_len
, fcp_rsp_iu
->fcp_sns_len
);
4159 ZFCP_LOG_TRACE("scpnt->result =0x%x, command was:\n",
4161 ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_TRACE
,
4162 (void *) &scpnt
->cmnd
, scpnt
->cmd_len
);
4164 ZFCP_LOG_TRACE("%i bytes sense data provided by FCP\n",
4165 fcp_rsp_iu
->fcp_sns_len
);
4166 memcpy(&scpnt
->sense_buffer
,
4167 zfcp_get_fcp_sns_info_ptr(fcp_rsp_iu
), sns_len
);
4168 ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_TRACE
,
4169 (void *) &scpnt
->sense_buffer
, sns_len
);
4172 /* check for overrun */
4173 if (unlikely(fcp_rsp_iu
->validity
.bits
.fcp_resid_over
)) {
4174 ZFCP_LOG_INFO("A data overrun was detected for a command. "
4175 "unit 0x%016Lx, port 0x%016Lx, adapter %s. "
4176 "The response data length is "
4177 "%d, the original length was %d.\n",
4180 zfcp_get_busid_by_unit(unit
),
4181 fcp_rsp_iu
->fcp_resid
,
4182 (int) zfcp_get_fcp_dl(fcp_cmnd_iu
));
4185 /* check for underrun */
4186 if (unlikely(fcp_rsp_iu
->validity
.bits
.fcp_resid_under
)) {
4187 ZFCP_LOG_INFO("A data underrun was detected for a command. "
4188 "unit 0x%016Lx, port 0x%016Lx, adapter %s. "
4189 "The response data length is "
4190 "%d, the original length was %d.\n",
4193 zfcp_get_busid_by_unit(unit
),
4194 fcp_rsp_iu
->fcp_resid
,
4195 (int) zfcp_get_fcp_dl(fcp_cmnd_iu
));
4197 scpnt
->resid
= fcp_rsp_iu
->fcp_resid
;
4198 if (scpnt
->request_bufflen
- scpnt
->resid
< scpnt
->underflow
)
4199 set_host_byte(&scpnt
->result
, DID_ERROR
);
4203 ZFCP_LOG_DEBUG("scpnt->result =0x%x\n", scpnt
->result
);
4205 if (scpnt
->result
!= 0)
4206 zfcp_scsi_dbf_event_result("erro", 3, fsf_req
->adapter
, scpnt
);
4207 else if (scpnt
->retries
> 0)
4208 zfcp_scsi_dbf_event_result("retr", 4, fsf_req
->adapter
, scpnt
);
4210 zfcp_scsi_dbf_event_result("norm", 6, fsf_req
->adapter
, scpnt
);
4212 /* cleanup pointer (need this especially for abort) */
4213 scpnt
->host_scribble
= NULL
;
4215 /* always call back */
4216 (scpnt
->scsi_done
) (scpnt
);
4219 * We must hold this lock until scsi_done has been called.
4220 * Otherwise we may call scsi_done after abort regarding this
4221 * command has completed.
4222 * Note: scsi_done must not block!
4225 read_unlock_irqrestore(&fsf_req
->adapter
->abort_lock
, flags
);
4230 * function: zfcp_fsf_send_fcp_command_task_management_handler
4232 * purpose: evaluates FCP_RSP IU
4237 zfcp_fsf_send_fcp_command_task_management_handler(struct zfcp_fsf_req
*fsf_req
)
4240 struct fcp_rsp_iu
*fcp_rsp_iu
= (struct fcp_rsp_iu
*)
4241 &(fsf_req
->qtcb
->bottom
.io
.fcp_rsp
);
4242 char *fcp_rsp_info
= zfcp_get_fcp_rsp_info_ptr(fcp_rsp_iu
);
4243 struct zfcp_unit
*unit
= (struct zfcp_unit
*) fsf_req
->data
;
4245 del_timer(&fsf_req
->adapter
->scsi_er_timer
);
4246 if (fsf_req
->status
& ZFCP_STATUS_FSFREQ_ERROR
) {
4247 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_TMFUNCFAILED
;
4248 goto skip_fsfstatus
;
4251 /* check FCP_RSP_INFO */
4252 switch (fcp_rsp_info
[3]) {
4255 ZFCP_LOG_DEBUG("no failure or Task Management "
4256 "Function complete\n");
4258 case RSP_CODE_TASKMAN_UNSUPP
:
4259 ZFCP_LOG_NORMAL("bug: A reuested task management function "
4260 "is not supported on the target device "
4261 "unit 0x%016Lx, port 0x%016Lx, adapter %s\n ",
4264 zfcp_get_busid_by_unit(unit
));
4265 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_TMFUNCNOTSUPP
;
4267 case RSP_CODE_TASKMAN_FAILED
:
4268 ZFCP_LOG_NORMAL("bug: A reuested task management function "
4269 "failed to complete successfully. "
4270 "unit 0x%016Lx, port 0x%016Lx, adapter %s.\n",
4273 zfcp_get_busid_by_unit(unit
));
4274 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_TMFUNCFAILED
;
4277 ZFCP_LOG_NORMAL("bug: An invalid FCP response "
4278 "code was detected for a command. "
4279 "unit 0x%016Lx, port 0x%016Lx, adapter %s "
4280 "(debug info 0x%x)\n",
4283 zfcp_get_busid_by_unit(unit
),
4285 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_TMFUNCFAILED
;
4294 * function: zfcp_fsf_control_file
4296 * purpose: Initiator of the control file upload/download FSF requests
4298 * returns: 0 - FSF request is successfuly created and queued
4299 * -EOPNOTSUPP - The FCP adapter does not have Control File support
4300 * -EINVAL - Invalid direction specified
4301 * -ENOMEM - Insufficient memory
4302 * -EPERM - Cannot create FSF request or place it in QDIO queue
4305 zfcp_fsf_control_file(struct zfcp_adapter
*adapter
,
4306 struct zfcp_fsf_req
**fsf_req_ptr
,
4309 struct zfcp_sg_list
*sg_list
)
4311 struct zfcp_fsf_req
*fsf_req
;
4312 struct fsf_qtcb_bottom_support
*bottom
;
4313 volatile struct qdio_buffer_element
*sbale
;
4314 struct timer_list
*timer
;
4315 unsigned long lock_flags
;
4320 if (!(adapter
->adapter_features
& FSF_FEATURE_CFDC
)) {
4321 ZFCP_LOG_INFO("cfdc not supported (adapter %s)\n",
4322 zfcp_get_busid_by_adapter(adapter
));
4323 retval
= -EOPNOTSUPP
;
4327 switch (fsf_command
) {
4329 case FSF_QTCB_DOWNLOAD_CONTROL_FILE
:
4330 direction
= SBAL_FLAGS0_TYPE_WRITE
;
4331 if ((option
!= FSF_CFDC_OPTION_FULL_ACCESS
) &&
4332 (option
!= FSF_CFDC_OPTION_RESTRICTED_ACCESS
))
4333 req_flags
= ZFCP_WAIT_FOR_SBAL
;
4336 case FSF_QTCB_UPLOAD_CONTROL_FILE
:
4337 direction
= SBAL_FLAGS0_TYPE_READ
;
4341 ZFCP_LOG_INFO("Invalid FSF command code 0x%08x\n", fsf_command
);
4346 timer
= kmalloc(sizeof(struct timer_list
), GFP_KERNEL
);
4352 retval
= zfcp_fsf_req_create(adapter
, fsf_command
, req_flags
,
4353 NULL
, &lock_flags
, &fsf_req
);
4355 ZFCP_LOG_INFO("error: Could not create FSF request for the "
4357 zfcp_get_busid_by_adapter(adapter
));
4359 goto unlock_queue_lock
;
4362 sbale
= zfcp_qdio_sbale_req(fsf_req
, fsf_req
->sbal_curr
, 0);
4363 sbale
[0].flags
|= direction
;
4365 bottom
= &fsf_req
->qtcb
->bottom
.support
;
4366 bottom
->operation_subtype
= FSF_CFDC_OPERATION_SUBTYPE
;
4367 bottom
->option
= option
;
4369 if (sg_list
->count
> 0) {
4372 bytes
= zfcp_qdio_sbals_from_sg(fsf_req
, direction
,
4373 sg_list
->sg
, sg_list
->count
,
4374 ZFCP_MAX_SBALS_PER_REQ
);
4375 if (bytes
!= ZFCP_CFDC_MAX_CONTROL_FILE_SIZE
) {
4377 "error: Could not create sufficient number of "
4378 "SBALS for an FSF request to the adapter %s\n",
4379 zfcp_get_busid_by_adapter(adapter
));
4384 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
4387 timer
->function
= zfcp_fsf_request_timeout_handler
;
4388 timer
->data
= (unsigned long) adapter
;
4389 timer
->expires
= ZFCP_FSF_REQUEST_TIMEOUT
;
4391 retval
= zfcp_fsf_req_send(fsf_req
, timer
);
4393 ZFCP_LOG_INFO("initiation of cfdc up/download failed"
4395 zfcp_get_busid_by_adapter(adapter
));
4399 write_unlock_irqrestore(&adapter
->request_queue
.queue_lock
, lock_flags
);
4401 ZFCP_LOG_NORMAL("Control file %s FSF request has been sent to the "
4403 fsf_command
== FSF_QTCB_DOWNLOAD_CONTROL_FILE
?
4404 "download" : "upload",
4405 zfcp_get_busid_by_adapter(adapter
));
4407 wait_event(fsf_req
->completion_wq
,
4408 fsf_req
->status
& ZFCP_STATUS_FSFREQ_COMPLETED
);
4410 *fsf_req_ptr
= fsf_req
;
4411 del_timer_sync(timer
);
4415 zfcp_fsf_req_free(fsf_req
);
4417 write_unlock_irqrestore(&adapter
->request_queue
.queue_lock
, lock_flags
);
4426 * function: zfcp_fsf_control_file_handler
4428 * purpose: Handler of the control file upload/download FSF requests
4430 * returns: 0 - FSF request successfuly processed
4431 * -EAGAIN - Operation has to be repeated because of a temporary problem
4432 * -EACCES - There is no permission to execute an operation
4433 * -EPERM - The control file is not in a right format
4434 * -EIO - There is a problem with the FCP adapter
4435 * -EINVAL - Invalid operation
4436 * -EFAULT - User space memory I/O operation fault
4439 zfcp_fsf_control_file_handler(struct zfcp_fsf_req
*fsf_req
)
4441 struct zfcp_adapter
*adapter
= fsf_req
->adapter
;
4442 struct fsf_qtcb_header
*header
= &fsf_req
->qtcb
->header
;
4443 struct fsf_qtcb_bottom_support
*bottom
= &fsf_req
->qtcb
->bottom
.support
;
4446 if (fsf_req
->status
& ZFCP_STATUS_FSFREQ_ERROR
) {
4448 goto skip_fsfstatus
;
4451 switch (header
->fsf_status
) {
4455 "The FSF request has been successfully completed "
4456 "on the adapter %s\n",
4457 zfcp_get_busid_by_adapter(adapter
));
4460 case FSF_OPERATION_PARTIALLY_SUCCESSFUL
:
4461 if (bottom
->operation_subtype
== FSF_CFDC_OPERATION_SUBTYPE
) {
4462 switch (header
->fsf_status_qual
.word
[0]) {
4464 case FSF_SQ_CFDC_HARDENED_ON_SE
:
4466 "CFDC on the adapter %s has being "
4467 "hardened on primary and secondary SE\n",
4468 zfcp_get_busid_by_adapter(adapter
));
4471 case FSF_SQ_CFDC_COULD_NOT_HARDEN_ON_SE
:
4473 "CFDC of the adapter %s could not "
4474 "be saved on the SE\n",
4475 zfcp_get_busid_by_adapter(adapter
));
4478 case FSF_SQ_CFDC_COULD_NOT_HARDEN_ON_SE2
:
4480 "CFDC of the adapter %s could not "
4481 "be copied to the secondary SE\n",
4482 zfcp_get_busid_by_adapter(adapter
));
4487 "CFDC could not be hardened "
4488 "on the adapter %s\n",
4489 zfcp_get_busid_by_adapter(adapter
));
4492 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
4496 case FSF_AUTHORIZATION_FAILURE
:
4498 "Adapter %s does not accept privileged commands\n",
4499 zfcp_get_busid_by_adapter(adapter
));
4500 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
4504 case FSF_CFDC_ERROR_DETECTED
:
4506 "Error at position %d in the CFDC, "
4507 "CFDC is discarded by the adapter %s\n",
4508 header
->fsf_status_qual
.word
[0],
4509 zfcp_get_busid_by_adapter(adapter
));
4510 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
4514 case FSF_CONTROL_FILE_UPDATE_ERROR
:
4516 "Adapter %s cannot harden the control file, "
4517 "file is discarded\n",
4518 zfcp_get_busid_by_adapter(adapter
));
4519 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
4523 case FSF_CONTROL_FILE_TOO_LARGE
:
4525 "Control file is too large, file is discarded "
4526 "by the adapter %s\n",
4527 zfcp_get_busid_by_adapter(adapter
));
4528 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
4532 case FSF_ACCESS_CONFLICT_DETECTED
:
4533 if (bottom
->operation_subtype
== FSF_CFDC_OPERATION_SUBTYPE
)
4535 "CFDC has been discarded by the adapter %s, "
4536 "because activation would impact "
4537 "%d active connection(s)\n",
4538 zfcp_get_busid_by_adapter(adapter
),
4539 header
->fsf_status_qual
.word
[0]);
4540 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
4544 case FSF_CONFLICTS_OVERRULED
:
4545 if (bottom
->operation_subtype
== FSF_CFDC_OPERATION_SUBTYPE
)
4547 "CFDC has been activated on the adapter %s, "
4548 "but activation has impacted "
4549 "%d active connection(s)\n",
4550 zfcp_get_busid_by_adapter(adapter
),
4551 header
->fsf_status_qual
.word
[0]);
4552 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
4556 case FSF_UNKNOWN_OP_SUBTYPE
:
4557 ZFCP_LOG_NORMAL("unknown operation subtype (adapter: %s, "
4558 "op_subtype=0x%x)\n",
4559 zfcp_get_busid_by_adapter(adapter
),
4560 bottom
->operation_subtype
);
4561 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
4565 case FSF_INVALID_COMMAND_OPTION
:
4567 "Invalid option 0x%x has been specified "
4568 "in QTCB bottom sent to the adapter %s\n",
4570 zfcp_get_busid_by_adapter(adapter
));
4571 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
4577 "bug: An unknown/unexpected FSF status 0x%08x "
4578 "was presented on the adapter %s\n",
4580 zfcp_get_busid_by_adapter(adapter
));
4581 debug_text_event(fsf_req
->adapter
->erp_dbf
, 0, "fsf_sq_inval");
4582 debug_exception(fsf_req
->adapter
->erp_dbf
, 0,
4583 &header
->fsf_status_qual
.word
[0], sizeof(u32
));
4584 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
4594 zfcp_fsf_req_sbal_check(unsigned long *flags
,
4595 struct zfcp_qdio_queue
*queue
, int needed
)
4597 write_lock_irqsave(&queue
->queue_lock
, *flags
);
4598 if (likely(atomic_read(&queue
->free_count
) >= needed
))
4600 write_unlock_irqrestore(&queue
->queue_lock
, *flags
);
4605 * set qtcb pointer in fsf_req and initialize QTCB
4608 zfcp_fsf_req_qtcb_init(struct zfcp_fsf_req
*fsf_req
)
4610 if (likely(fsf_req
->qtcb
!= NULL
)) {
4611 fsf_req
->qtcb
->prefix
.req_seq_no
= fsf_req
->adapter
->fsf_req_seq_no
;
4612 fsf_req
->qtcb
->prefix
.req_id
= (unsigned long)fsf_req
;
4613 fsf_req
->qtcb
->prefix
.ulp_info
= ZFCP_ULP_INFO_VERSION
;
4614 fsf_req
->qtcb
->prefix
.qtcb_type
= fsf_qtcb_type
[fsf_req
->fsf_command
];
4615 fsf_req
->qtcb
->prefix
.qtcb_version
= ZFCP_QTCB_VERSION
;
4616 fsf_req
->qtcb
->header
.req_handle
= (unsigned long)fsf_req
;
4617 fsf_req
->qtcb
->header
.fsf_command
= fsf_req
->fsf_command
;
4622 * zfcp_fsf_req_sbal_get - try to get one SBAL in the request queue
4623 * @adapter: adapter for which request queue is examined
4624 * @req_flags: flags indicating whether to wait for needed SBAL or not
4625 * @lock_flags: lock_flags if queue_lock is taken
4626 * Return: 0 on success, otherwise -EIO, or -ERESTARTSYS
4627 * Locks: lock adapter->request_queue->queue_lock on success
4630 zfcp_fsf_req_sbal_get(struct zfcp_adapter
*adapter
, int req_flags
,
4631 unsigned long *lock_flags
)
4634 struct zfcp_qdio_queue
*req_queue
= &adapter
->request_queue
;
4636 if (unlikely(req_flags
& ZFCP_WAIT_FOR_SBAL
)) {
4637 ret
= wait_event_interruptible_timeout(adapter
->request_wq
,
4638 zfcp_fsf_req_sbal_check(lock_flags
, req_queue
, 1),
4644 } else if (!zfcp_fsf_req_sbal_check(lock_flags
, req_queue
, 1))
4651 * function: zfcp_fsf_req_create
4653 * purpose: create an FSF request at the specified adapter and
4654 * setup common fields
4656 * returns: -ENOMEM if there was insufficient memory for a request
4657 * -EIO if no qdio buffers could be allocate to the request
4658 * -EINVAL/-EPERM on bug conditions in req_dequeue
4661 * note: The created request is returned by reference.
4663 * locks: lock of concerned request queue must not be held,
4664 * but is held on completion (write, irqsave)
4667 zfcp_fsf_req_create(struct zfcp_adapter
*adapter
, u32 fsf_cmd
, int req_flags
,
4668 mempool_t
*pool
, unsigned long *lock_flags
,
4669 struct zfcp_fsf_req
**fsf_req_p
)
4671 volatile struct qdio_buffer_element
*sbale
;
4672 struct zfcp_fsf_req
*fsf_req
= NULL
;
4674 struct zfcp_qdio_queue
*req_queue
= &adapter
->request_queue
;
4676 /* allocate new FSF request */
4677 fsf_req
= zfcp_fsf_req_alloc(pool
, req_flags
);
4678 if (unlikely(NULL
== fsf_req
)) {
4679 ZFCP_LOG_DEBUG("error: Could not put an FSF request into"
4680 "the outbound (send) queue.\n");
4682 goto failed_fsf_req
;
4685 fsf_req
->adapter
= adapter
;
4686 fsf_req
->fsf_command
= fsf_cmd
;
4688 zfcp_fsf_req_qtcb_init(fsf_req
);
4690 /* initialize waitqueue which may be used to wait on
4691 this request completion */
4692 init_waitqueue_head(&fsf_req
->completion_wq
);
4694 ret
= zfcp_fsf_req_sbal_get(adapter
, req_flags
, lock_flags
);
4700 * We hold queue_lock here. Check if QDIOUP is set and let request fail
4701 * if it is not set (see also *_open_qdio and *_close_qdio).
4704 if (!atomic_test_mask(ZFCP_STATUS_ADAPTER_QDIOUP
, &adapter
->status
)) {
4705 write_unlock_irqrestore(&req_queue
->queue_lock
, *lock_flags
);
4710 if (fsf_req
->qtcb
) {
4711 fsf_req
->seq_no
= adapter
->fsf_req_seq_no
;
4712 fsf_req
->qtcb
->prefix
.req_seq_no
= adapter
->fsf_req_seq_no
;
4714 fsf_req
->sbal_number
= 1;
4715 fsf_req
->sbal_first
= req_queue
->free_index
;
4716 fsf_req
->sbal_curr
= req_queue
->free_index
;
4717 fsf_req
->sbale_curr
= 1;
4719 if (likely(req_flags
& ZFCP_REQ_AUTO_CLEANUP
)) {
4720 fsf_req
->status
|= ZFCP_STATUS_FSFREQ_CLEANUP
;
4723 sbale
= zfcp_qdio_sbale_req(fsf_req
, fsf_req
->sbal_curr
, 0);
4725 /* setup common SBALE fields */
4726 sbale
[0].addr
= fsf_req
;
4727 sbale
[0].flags
|= SBAL_FLAGS0_COMMAND
;
4728 if (likely(fsf_req
->qtcb
!= NULL
)) {
4729 sbale
[1].addr
= (void *) fsf_req
->qtcb
;
4730 sbale
[1].length
= sizeof(struct fsf_qtcb
);
4733 ZFCP_LOG_TRACE("got %i free BUFFERs starting at index %i\n",
4734 fsf_req
->sbal_number
, fsf_req
->sbal_first
);
4739 /* dequeue new FSF request previously enqueued */
4740 zfcp_fsf_req_free(fsf_req
);
4744 write_lock_irqsave(&req_queue
->queue_lock
, *lock_flags
);
4746 *fsf_req_p
= fsf_req
;
4751 * function: zfcp_fsf_req_send
4753 * purpose: start transfer of FSF request via QDIO
4755 * returns: 0 - request transfer succesfully started
4756 * !0 - start of request transfer failed
4759 zfcp_fsf_req_send(struct zfcp_fsf_req
*fsf_req
, struct timer_list
*timer
)
4761 struct zfcp_adapter
*adapter
;
4762 struct zfcp_qdio_queue
*req_queue
;
4763 volatile struct qdio_buffer_element
*sbale
;
4765 int new_distance_from_int
;
4766 unsigned long flags
;
4769 adapter
= fsf_req
->adapter
;
4770 req_queue
= &adapter
->request_queue
,
4773 /* FIXME(debug): remove it later */
4774 sbale
= zfcp_qdio_sbale_req(fsf_req
, fsf_req
->sbal_first
, 0);
4775 ZFCP_LOG_DEBUG("SBALE0 flags=0x%x\n", sbale
[0].flags
);
4776 ZFCP_LOG_TRACE("HEX DUMP OF SBALE1 PAYLOAD:\n");
4777 ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_TRACE
, (char *) sbale
[1].addr
,
4780 /* put allocated FSF request at list tail */
4781 spin_lock_irqsave(&adapter
->fsf_req_list_lock
, flags
);
4782 list_add_tail(&fsf_req
->list
, &adapter
->fsf_req_list_head
);
4783 spin_unlock_irqrestore(&adapter
->fsf_req_list_lock
, flags
);
4785 inc_seq_no
= (fsf_req
->qtcb
!= NULL
);
4787 /* figure out expiration time of timeout and start timeout */
4788 if (unlikely(timer
)) {
4789 timer
->expires
+= jiffies
;
4793 ZFCP_LOG_TRACE("request queue of adapter %s: "
4794 "next free SBAL is %i, %i free SBALs\n",
4795 zfcp_get_busid_by_adapter(adapter
),
4796 req_queue
->free_index
,
4797 atomic_read(&req_queue
->free_count
));
4799 ZFCP_LOG_DEBUG("calling do_QDIO adapter %s, flags=0x%x, queue_no=%i, "
4800 "index_in_queue=%i, count=%i, buffers=%p\n",
4801 zfcp_get_busid_by_adapter(adapter
),
4802 QDIO_FLAG_SYNC_OUTPUT
,
4803 0, fsf_req
->sbal_first
, fsf_req
->sbal_number
,
4804 &req_queue
->buffer
[fsf_req
->sbal_first
]);
4807 * adjust the number of free SBALs in request queue as well as
4808 * position of first one
4810 atomic_sub(fsf_req
->sbal_number
, &req_queue
->free_count
);
4811 ZFCP_LOG_TRACE("free_count=%d\n", atomic_read(&req_queue
->free_count
));
4812 req_queue
->free_index
+= fsf_req
->sbal_number
; /* increase */
4813 req_queue
->free_index
%= QDIO_MAX_BUFFERS_PER_Q
; /* wrap if needed */
4814 new_distance_from_int
= zfcp_qdio_determine_pci(req_queue
, fsf_req
);
4816 fsf_req
->issued
= get_clock();
4818 retval
= do_QDIO(adapter
->ccw_device
,
4819 QDIO_FLAG_SYNC_OUTPUT
,
4820 0, fsf_req
->sbal_first
, fsf_req
->sbal_number
, NULL
);
4822 if (unlikely(retval
)) {
4823 /* Queues are down..... */
4826 * FIXME(potential race):
4827 * timer might be expired (absolutely unlikely)
4831 spin_lock_irqsave(&adapter
->fsf_req_list_lock
, flags
);
4832 list_del(&fsf_req
->list
);
4833 spin_unlock_irqrestore(&adapter
->fsf_req_list_lock
, flags
);
4835 * adjust the number of free SBALs in request queue as well as
4836 * position of first one
4838 zfcp_qdio_zero_sbals(req_queue
->buffer
,
4839 fsf_req
->sbal_first
, fsf_req
->sbal_number
);
4840 atomic_add(fsf_req
->sbal_number
, &req_queue
->free_count
);
4841 req_queue
->free_index
-= fsf_req
->sbal_number
; /* increase */
4842 req_queue
->free_index
+= QDIO_MAX_BUFFERS_PER_Q
;
4843 req_queue
->free_index
%= QDIO_MAX_BUFFERS_PER_Q
; /* wrap */
4845 ("error: do_QDIO failed. Buffers could not be enqueued "
4846 "to request queue.\n");
4848 req_queue
->distance_from_int
= new_distance_from_int
;
4850 * increase FSF sequence counter -
4851 * this must only be done for request successfully enqueued to
4852 * QDIO this rejected requests may be cleaned up by calling
4853 * routines resulting in missing sequence counter values
4857 /* Don't increase for unsolicited status */
4859 adapter
->fsf_req_seq_no
++;
4861 /* count FSF requests pending */
4862 atomic_inc(&adapter
->fsf_reqs_active
);
4867 #undef ZFCP_LOG_AREA