2 * This file is part of the zfcp device driver for
3 * FCP adapters for IBM System z9 and zSeries.
5 * (C) Copyright IBM Corp. 2002, 2006
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2, or (at your option)
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 static int zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *);
25 static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *);
26 static int zfcp_fsf_open_port_handler(struct zfcp_fsf_req *);
27 static int zfcp_fsf_close_port_handler(struct zfcp_fsf_req *);
28 static int zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *);
29 static int zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *);
30 static int zfcp_fsf_close_unit_handler(struct zfcp_fsf_req *);
31 static int zfcp_fsf_send_fcp_command_handler(struct zfcp_fsf_req *);
32 static int zfcp_fsf_send_fcp_command_task_handler(struct zfcp_fsf_req *);
33 static int zfcp_fsf_send_fcp_command_task_management_handler(
34 struct zfcp_fsf_req *);
35 static int zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req *);
36 static int zfcp_fsf_status_read_handler(struct zfcp_fsf_req *);
37 static int zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *);
38 static int zfcp_fsf_send_els_handler(struct zfcp_fsf_req *);
39 static int zfcp_fsf_control_file_handler(struct zfcp_fsf_req *);
40 static inline int zfcp_fsf_req_sbal_check(
41 unsigned long *, struct zfcp_qdio_queue *, int);
42 static inline int zfcp_use_one_sbal(
43 struct scatterlist *, int, struct scatterlist *, int);
44 static struct zfcp_fsf_req *zfcp_fsf_req_alloc(mempool_t *, int);
45 static int zfcp_fsf_req_send(struct zfcp_fsf_req *);
46 static int zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *);
47 static int zfcp_fsf_fsfstatus_eval(struct zfcp_fsf_req *);
48 static int zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req *);
49 static void zfcp_fsf_link_down_info_eval(struct zfcp_fsf_req *, u8,
50 struct fsf_link_down_info *);
51 static int zfcp_fsf_req_dispatch(struct zfcp_fsf_req *);
53 /* association between FSF command and FSF QTCB type */
54 static u32 fsf_qtcb_type[] = {
55 [FSF_QTCB_FCP_CMND] = FSF_IO_COMMAND,
56 [FSF_QTCB_ABORT_FCP_CMND] = FSF_SUPPORT_COMMAND,
57 [FSF_QTCB_OPEN_PORT_WITH_DID] = FSF_SUPPORT_COMMAND,
58 [FSF_QTCB_OPEN_LUN] = FSF_SUPPORT_COMMAND,
59 [FSF_QTCB_CLOSE_LUN] = FSF_SUPPORT_COMMAND,
60 [FSF_QTCB_CLOSE_PORT] = FSF_SUPPORT_COMMAND,
61 [FSF_QTCB_CLOSE_PHYSICAL_PORT] = FSF_SUPPORT_COMMAND,
62 [FSF_QTCB_SEND_ELS] = FSF_SUPPORT_COMMAND,
63 [FSF_QTCB_SEND_GENERIC] = FSF_SUPPORT_COMMAND,
64 [FSF_QTCB_EXCHANGE_CONFIG_DATA] = FSF_CONFIG_COMMAND,
65 [FSF_QTCB_EXCHANGE_PORT_DATA] = FSF_PORT_COMMAND,
66 [FSF_QTCB_DOWNLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND,
67 [FSF_QTCB_UPLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND
70 static const char zfcp_act_subtable_type[5][8] = {
71 "unknown", "OS", "WWPN", "DID", "LUN"
74 /****************************************************************/
75 /*************** FSF related Functions *************************/
76 /****************************************************************/
78 #define ZFCP_LOG_AREA ZFCP_LOG_AREA_FSF
81 * function: zfcp_fsf_req_alloc
83 * purpose: Obtains an fsf_req and potentially a qtcb (for all but
84 * unsolicited requests) via helper functions
85 * Does some initial fsf request set-up.
87 * returns: pointer to allocated fsf_req if successfull
93 static struct zfcp_fsf_req *
94 zfcp_fsf_req_alloc(mempool_t *pool, int req_flags)
98 struct zfcp_fsf_req *fsf_req = NULL;
100 if (req_flags & ZFCP_REQ_NO_QTCB)
101 size = sizeof(struct zfcp_fsf_req);
103 size = sizeof(struct zfcp_fsf_req_qtcb);
106 ptr = mempool_alloc(pool, GFP_ATOMIC);
108 if (req_flags & ZFCP_REQ_NO_QTCB)
109 ptr = kmalloc(size, GFP_ATOMIC);
111 ptr = kmem_cache_alloc(zfcp_data.fsf_req_qtcb_cache,
118 memset(ptr, 0, size);
120 if (req_flags & ZFCP_REQ_NO_QTCB) {
121 fsf_req = (struct zfcp_fsf_req *) ptr;
123 fsf_req = &((struct zfcp_fsf_req_qtcb *) ptr)->fsf_req;
124 fsf_req->qtcb = &((struct zfcp_fsf_req_qtcb *) ptr)->qtcb;
127 fsf_req->pool = pool;
134 * function: zfcp_fsf_req_free
136 * purpose: Frees the memory of an fsf_req (and potentially a qtcb) or
137 * returns it into the pool via helper functions.
144 zfcp_fsf_req_free(struct zfcp_fsf_req *fsf_req)
146 if (likely(fsf_req->pool)) {
147 mempool_free(fsf_req, fsf_req->pool);
152 kmem_cache_free(zfcp_data.fsf_req_qtcb_cache, fsf_req);
160 * Never ever call this without shutting down the adapter first.
161 * Otherwise the adapter would continue using and corrupting s390 storage.
162 * Included BUG_ON() call to ensure this is done.
163 * ERP is supposed to be the only user of this function.
165 void zfcp_fsf_req_dismiss_all(struct zfcp_adapter *adapter)
167 struct zfcp_fsf_req *fsf_req, *tmp;
169 LIST_HEAD(remove_queue);
172 BUG_ON(atomic_test_mask(ZFCP_STATUS_ADAPTER_QDIOUP, &adapter->status));
173 spin_lock_irqsave(&adapter->req_list_lock, flags);
174 atomic_set(&adapter->reqs_active, 0);
175 for (i = 0; i < REQUEST_LIST_SIZE; i++)
176 list_splice_init(&adapter->req_list[i], &remove_queue);
177 spin_unlock_irqrestore(&adapter->req_list_lock, flags);
179 list_for_each_entry_safe(fsf_req, tmp, &remove_queue, list) {
180 list_del(&fsf_req->list);
181 fsf_req->status |= ZFCP_STATUS_FSFREQ_DISMISSED;
182 zfcp_fsf_req_complete(fsf_req);
187 * function: zfcp_fsf_req_complete
189 * purpose: Updates active counts and timers for openfcp-reqs
190 * May cleanup request after req_eval returns
192 * returns: 0 - success
198 zfcp_fsf_req_complete(struct zfcp_fsf_req *fsf_req)
203 if (unlikely(fsf_req->fsf_command == FSF_QTCB_UNSOLICITED_STATUS)) {
204 ZFCP_LOG_DEBUG("Status read response received\n");
206 * Note: all cleanup handling is done in the callchain of
207 * the function call-chain below.
209 zfcp_fsf_status_read_handler(fsf_req);
212 del_timer(&fsf_req->timer);
213 zfcp_fsf_protstatus_eval(fsf_req);
217 * fsf_req may be deleted due to waking up functions, so
218 * cleanup is saved here and used later
220 if (likely(fsf_req->status & ZFCP_STATUS_FSFREQ_CLEANUP))
225 fsf_req->status |= ZFCP_STATUS_FSFREQ_COMPLETED;
227 /* cleanup request if requested by initiator */
228 if (likely(cleanup)) {
229 ZFCP_LOG_TRACE("removing FSF request %p\n", fsf_req);
231 * lock must not be held here since it will be
232 * grabed by the called routine, too
234 zfcp_fsf_req_free(fsf_req);
236 /* notify initiator waiting for the requests completion */
237 ZFCP_LOG_TRACE("waking initiator of FSF request %p\n",fsf_req);
239 * FIXME: Race! We must not access fsf_req here as it might have been
240 * cleaned up already due to the set ZFCP_STATUS_FSFREQ_COMPLETED
241 * flag. It's an improbable case. But, we have the same paranoia for
242 * the cleanup flag already.
243 * Might better be handled using complete()?
244 * (setting the flag and doing wakeup ought to be atomic
245 * with regard to checking the flag as long as waitqueue is
246 * part of the to be released structure)
248 wake_up(&fsf_req->completion_wq);
256 * function: zfcp_fsf_protstatus_eval
258 * purpose: evaluates the QTCB of the finished FSF request
259 * and initiates appropriate actions
260 * (usually calling FSF command specific handlers)
269 zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *fsf_req)
272 struct zfcp_adapter *adapter = fsf_req->adapter;
273 struct fsf_qtcb *qtcb = fsf_req->qtcb;
274 union fsf_prot_status_qual *prot_status_qual =
275 &qtcb->prefix.prot_status_qual;
277 zfcp_hba_dbf_event_fsf_response(fsf_req);
279 if (fsf_req->status & ZFCP_STATUS_FSFREQ_DISMISSED) {
280 ZFCP_LOG_DEBUG("fsf_req 0x%lx has been dismissed\n",
281 (unsigned long) fsf_req);
282 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR |
283 ZFCP_STATUS_FSFREQ_RETRY; /* only for SCSI cmnds. */
284 goto skip_protstatus;
287 /* evaluate FSF Protocol Status */
288 switch (qtcb->prefix.prot_status) {
291 case FSF_PROT_FSF_STATUS_PRESENTED:
294 case FSF_PROT_QTCB_VERSION_ERROR:
295 ZFCP_LOG_NORMAL("error: The adapter %s contains "
296 "microcode of version 0x%x, the device driver "
297 "only supports 0x%x. Aborting.\n",
298 zfcp_get_busid_by_adapter(adapter),
299 prot_status_qual->version_error.fsf_version,
301 zfcp_erp_adapter_shutdown(adapter, 0, 117, fsf_req);
302 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
305 case FSF_PROT_SEQ_NUMB_ERROR:
306 ZFCP_LOG_NORMAL("bug: Sequence number mismatch between "
307 "driver (0x%x) and adapter %s (0x%x). "
308 "Restarting all operations on this adapter.\n",
309 qtcb->prefix.req_seq_no,
310 zfcp_get_busid_by_adapter(adapter),
311 prot_status_qual->sequence_error.exp_req_seq_no);
312 zfcp_erp_adapter_reopen(adapter, 0, 98, fsf_req);
313 fsf_req->status |= ZFCP_STATUS_FSFREQ_RETRY;
314 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
317 case FSF_PROT_UNSUPP_QTCB_TYPE:
318 ZFCP_LOG_NORMAL("error: Packet header type used by the "
319 "device driver is incompatible with "
320 "that used on adapter %s. "
321 "Stopping all operations on this adapter.\n",
322 zfcp_get_busid_by_adapter(adapter));
323 zfcp_erp_adapter_shutdown(adapter, 0, 118, fsf_req);
324 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
327 case FSF_PROT_HOST_CONNECTION_INITIALIZING:
328 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
329 atomic_set_mask(ZFCP_STATUS_ADAPTER_HOST_CON_INIT,
333 case FSF_PROT_DUPLICATE_REQUEST_ID:
334 ZFCP_LOG_NORMAL("bug: The request identifier 0x%Lx "
335 "to the adapter %s is ambiguous. "
336 "Stopping all operations on this adapter.\n",
337 *(unsigned long long*)
338 (&qtcb->bottom.support.req_handle),
339 zfcp_get_busid_by_adapter(adapter));
340 zfcp_erp_adapter_shutdown(adapter, 0, 78, fsf_req);
341 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
344 case FSF_PROT_LINK_DOWN:
345 zfcp_fsf_link_down_info_eval(fsf_req, 37,
346 &prot_status_qual->link_down_info);
347 /* FIXME: reopening adapter now? better wait for link up */
348 zfcp_erp_adapter_reopen(adapter, 0, 79, fsf_req);
349 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
352 case FSF_PROT_REEST_QUEUE:
353 ZFCP_LOG_NORMAL("The local link to adapter with "
354 "%s was re-plugged. "
355 "Re-starting operations on this adapter.\n",
356 zfcp_get_busid_by_adapter(adapter));
357 /* All ports should be marked as ready to run again */
358 zfcp_erp_modify_adapter_status(adapter, 28, NULL,
359 ZFCP_STATUS_COMMON_RUNNING,
361 zfcp_erp_adapter_reopen(adapter,
362 ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED
363 | ZFCP_STATUS_COMMON_ERP_FAILED,
365 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
368 case FSF_PROT_ERROR_STATE:
369 ZFCP_LOG_NORMAL("error: The adapter %s "
370 "has entered the error state. "
371 "Restarting all operations on this "
373 zfcp_get_busid_by_adapter(adapter));
374 zfcp_erp_adapter_reopen(adapter, 0, 100, fsf_req);
375 fsf_req->status |= ZFCP_STATUS_FSFREQ_RETRY;
376 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
380 ZFCP_LOG_NORMAL("bug: Transfer protocol status information "
381 "provided by the adapter %s "
382 "is not compatible with the device driver. "
383 "Stopping all operations on this adapter. "
384 "(debug info 0x%x).\n",
385 zfcp_get_busid_by_adapter(adapter),
386 qtcb->prefix.prot_status);
387 zfcp_erp_adapter_shutdown(adapter, 0, 119, fsf_req);
388 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
393 * always call specific handlers to give them a chance to do
394 * something meaningful even in error cases
396 zfcp_fsf_fsfstatus_eval(fsf_req);
401 * function: zfcp_fsf_fsfstatus_eval
403 * purpose: evaluates FSF status of completed FSF request
404 * and acts accordingly
409 zfcp_fsf_fsfstatus_eval(struct zfcp_fsf_req *fsf_req)
413 if (unlikely(fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR)) {
417 /* evaluate FSF Status */
418 switch (fsf_req->qtcb->header.fsf_status) {
419 case FSF_UNKNOWN_COMMAND:
420 ZFCP_LOG_NORMAL("bug: Command issued by the device driver is "
421 "not known by the adapter %s "
422 "Stopping all operations on this adapter. "
423 "(debug info 0x%x).\n",
424 zfcp_get_busid_by_adapter(fsf_req->adapter),
425 fsf_req->qtcb->header.fsf_command);
426 zfcp_erp_adapter_shutdown(fsf_req->adapter, 0, 120, fsf_req);
427 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
430 case FSF_FCP_RSP_AVAILABLE:
431 ZFCP_LOG_DEBUG("FCP Sense data will be presented to the "
435 case FSF_ADAPTER_STATUS_AVAILABLE:
436 zfcp_fsf_fsfstatus_qual_eval(fsf_req);
442 * always call specific handlers to give them a chance to do
443 * something meaningful even in error cases
445 zfcp_fsf_req_dispatch(fsf_req);
451 * function: zfcp_fsf_fsfstatus_qual_eval
453 * purpose: evaluates FSF status-qualifier of completed FSF request
454 * and acts accordingly
459 zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req *fsf_req)
463 switch (fsf_req->qtcb->header.fsf_status_qual.word[0]) {
464 case FSF_SQ_FCP_RSP_AVAILABLE:
466 case FSF_SQ_RETRY_IF_POSSIBLE:
467 /* The SCSI-stack may now issue retries or escalate */
468 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
470 case FSF_SQ_COMMAND_ABORTED:
471 /* Carry the aborted state on to upper layer */
472 fsf_req->status |= ZFCP_STATUS_FSFREQ_ABORTED;
473 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
475 case FSF_SQ_NO_RECOM:
476 ZFCP_LOG_NORMAL("bug: No recommendation could be given for a "
477 "problem on the adapter %s "
478 "Stopping all operations on this adapter. ",
479 zfcp_get_busid_by_adapter(fsf_req->adapter));
480 zfcp_erp_adapter_shutdown(fsf_req->adapter, 0, 121, fsf_req);
481 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
483 case FSF_SQ_ULP_PROGRAMMING_ERROR:
484 ZFCP_LOG_NORMAL("error: not enough SBALs for data transfer "
486 zfcp_get_busid_by_adapter(fsf_req->adapter));
487 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
489 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
490 case FSF_SQ_NO_RETRY_POSSIBLE:
491 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
492 /* dealt with in the respective functions */
495 ZFCP_LOG_NORMAL("bug: Additional status info could "
496 "not be interpreted properly.\n");
497 ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_NORMAL,
498 (char *) &fsf_req->qtcb->header.fsf_status_qual,
499 sizeof (union fsf_status_qual));
500 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
508 * zfcp_fsf_link_down_info_eval - evaluate link down information block
511 zfcp_fsf_link_down_info_eval(struct zfcp_fsf_req *fsf_req, u8 id,
512 struct fsf_link_down_info *link_down)
514 struct zfcp_adapter *adapter = fsf_req->adapter;
516 if (atomic_test_mask(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED,
520 atomic_set_mask(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED, &adapter->status);
522 if (link_down == NULL)
525 switch (link_down->error_code) {
526 case FSF_PSQ_LINK_NO_LIGHT:
527 ZFCP_LOG_NORMAL("The local link to adapter %s is down "
528 "(no light detected)\n",
529 zfcp_get_busid_by_adapter(adapter));
531 case FSF_PSQ_LINK_WRAP_PLUG:
532 ZFCP_LOG_NORMAL("The local link to adapter %s is down "
533 "(wrap plug detected)\n",
534 zfcp_get_busid_by_adapter(adapter));
536 case FSF_PSQ_LINK_NO_FCP:
537 ZFCP_LOG_NORMAL("The local link to adapter %s is down "
538 "(adjacent node on link does not support FCP)\n",
539 zfcp_get_busid_by_adapter(adapter));
541 case FSF_PSQ_LINK_FIRMWARE_UPDATE:
542 ZFCP_LOG_NORMAL("The local link to adapter %s is down "
543 "(firmware update in progress)\n",
544 zfcp_get_busid_by_adapter(adapter));
546 case FSF_PSQ_LINK_INVALID_WWPN:
547 ZFCP_LOG_NORMAL("The local link to adapter %s is down "
548 "(duplicate or invalid WWPN detected)\n",
549 zfcp_get_busid_by_adapter(adapter));
551 case FSF_PSQ_LINK_NO_NPIV_SUPPORT:
552 ZFCP_LOG_NORMAL("The local link to adapter %s is down "
553 "(no support for NPIV by Fabric)\n",
554 zfcp_get_busid_by_adapter(adapter));
556 case FSF_PSQ_LINK_NO_FCP_RESOURCES:
557 ZFCP_LOG_NORMAL("The local link to adapter %s is down "
558 "(out of resource in FCP daughtercard)\n",
559 zfcp_get_busid_by_adapter(adapter));
561 case FSF_PSQ_LINK_NO_FABRIC_RESOURCES:
562 ZFCP_LOG_NORMAL("The local link to adapter %s is down "
563 "(out of resource in Fabric)\n",
564 zfcp_get_busid_by_adapter(adapter));
566 case FSF_PSQ_LINK_FABRIC_LOGIN_UNABLE:
567 ZFCP_LOG_NORMAL("The local link to adapter %s is down "
568 "(unable to Fabric login)\n",
569 zfcp_get_busid_by_adapter(adapter));
571 case FSF_PSQ_LINK_WWPN_ASSIGNMENT_CORRUPTED:
572 ZFCP_LOG_NORMAL("WWPN assignment file corrupted on adapter %s\n",
573 zfcp_get_busid_by_adapter(adapter));
575 case FSF_PSQ_LINK_MODE_TABLE_CURRUPTED:
576 ZFCP_LOG_NORMAL("Mode table corrupted on adapter %s\n",
577 zfcp_get_busid_by_adapter(adapter));
579 case FSF_PSQ_LINK_NO_WWPN_ASSIGNMENT:
580 ZFCP_LOG_NORMAL("No WWPN for assignment table on adapter %s\n",
581 zfcp_get_busid_by_adapter(adapter));
584 ZFCP_LOG_NORMAL("The local link to adapter %s is down "
585 "(warning: unknown reason code %d)\n",
586 zfcp_get_busid_by_adapter(adapter),
587 link_down->error_code);
590 if (adapter->connection_features & FSF_FEATURE_NPIV_MODE)
591 ZFCP_LOG_DEBUG("Debug information to link down: "
592 "primary_status=0x%02x "
594 "action_code=0x%02x "
595 "reason_code=0x%02x "
596 "explanation_code=0x%02x "
597 "vendor_specific_code=0x%02x\n",
598 link_down->primary_status,
599 link_down->ioerr_code,
600 link_down->action_code,
601 link_down->reason_code,
602 link_down->explanation_code,
603 link_down->vendor_specific_code);
606 zfcp_erp_adapter_failed(adapter, id, fsf_req);
610 * function: zfcp_fsf_req_dispatch
612 * purpose: calls the appropriate command specific handler
617 zfcp_fsf_req_dispatch(struct zfcp_fsf_req *fsf_req)
619 struct zfcp_erp_action *erp_action = fsf_req->erp_action;
620 struct zfcp_adapter *adapter = fsf_req->adapter;
624 switch (fsf_req->fsf_command) {
626 case FSF_QTCB_FCP_CMND:
627 zfcp_fsf_send_fcp_command_handler(fsf_req);
630 case FSF_QTCB_ABORT_FCP_CMND:
631 zfcp_fsf_abort_fcp_command_handler(fsf_req);
634 case FSF_QTCB_SEND_GENERIC:
635 zfcp_fsf_send_ct_handler(fsf_req);
638 case FSF_QTCB_OPEN_PORT_WITH_DID:
639 zfcp_fsf_open_port_handler(fsf_req);
642 case FSF_QTCB_OPEN_LUN:
643 zfcp_fsf_open_unit_handler(fsf_req);
646 case FSF_QTCB_CLOSE_LUN:
647 zfcp_fsf_close_unit_handler(fsf_req);
650 case FSF_QTCB_CLOSE_PORT:
651 zfcp_fsf_close_port_handler(fsf_req);
654 case FSF_QTCB_CLOSE_PHYSICAL_PORT:
655 zfcp_fsf_close_physical_port_handler(fsf_req);
658 case FSF_QTCB_EXCHANGE_CONFIG_DATA:
659 zfcp_fsf_exchange_config_data_handler(fsf_req);
662 case FSF_QTCB_EXCHANGE_PORT_DATA:
663 zfcp_fsf_exchange_port_data_handler(fsf_req);
666 case FSF_QTCB_SEND_ELS:
667 zfcp_fsf_send_els_handler(fsf_req);
670 case FSF_QTCB_DOWNLOAD_CONTROL_FILE:
671 zfcp_fsf_control_file_handler(fsf_req);
674 case FSF_QTCB_UPLOAD_CONTROL_FILE:
675 zfcp_fsf_control_file_handler(fsf_req);
679 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
680 ZFCP_LOG_NORMAL("bug: Command issued by the device driver is "
681 "not supported by the adapter %s\n",
682 zfcp_get_busid_by_adapter(adapter));
683 if (fsf_req->fsf_command != fsf_req->qtcb->header.fsf_command)
685 ("bug: Command issued by the device driver differs "
686 "from the command returned by the adapter %s "
687 "(debug info 0x%x, 0x%x).\n",
688 zfcp_get_busid_by_adapter(adapter),
689 fsf_req->fsf_command,
690 fsf_req->qtcb->header.fsf_command);
696 zfcp_erp_async_handler(erp_action, 0);
702 * function: zfcp_fsf_status_read
704 * purpose: initiates a Status Read command at the specified adapter
709 zfcp_fsf_status_read(struct zfcp_adapter *adapter, int req_flags)
711 struct zfcp_fsf_req *fsf_req;
712 struct fsf_status_read_buffer *status_buffer;
713 unsigned long lock_flags;
714 volatile struct qdio_buffer_element *sbale;
717 /* setup new FSF request */
718 retval = zfcp_fsf_req_create(adapter, FSF_QTCB_UNSOLICITED_STATUS,
719 req_flags | ZFCP_REQ_NO_QTCB,
720 adapter->pool.fsf_req_status_read,
721 &lock_flags, &fsf_req);
723 ZFCP_LOG_INFO("error: Could not create unsolicited status "
724 "buffer for adapter %s.\n",
725 zfcp_get_busid_by_adapter(adapter));
726 goto failed_req_create;
729 sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
730 sbale[0].flags |= SBAL_FLAGS0_TYPE_STATUS;
731 sbale[2].flags |= SBAL_FLAGS_LAST_ENTRY;
732 fsf_req->sbale_curr = 2;
735 mempool_alloc(adapter->pool.data_status_read, GFP_ATOMIC);
736 if (!status_buffer) {
737 ZFCP_LOG_NORMAL("bug: could not get some buffer\n");
740 memset(status_buffer, 0, sizeof (struct fsf_status_read_buffer));
741 fsf_req->data = (unsigned long) status_buffer;
743 /* insert pointer to respective buffer */
744 sbale = zfcp_qdio_sbale_curr(fsf_req);
745 sbale->addr = (void *) status_buffer;
746 sbale->length = sizeof(struct fsf_status_read_buffer);
748 retval = zfcp_fsf_req_send(fsf_req);
750 ZFCP_LOG_DEBUG("error: Could not set-up unsolicited status "
752 goto failed_req_send;
755 ZFCP_LOG_TRACE("Status Read request initiated (adapter%s)\n",
756 zfcp_get_busid_by_adapter(adapter));
760 mempool_free(status_buffer, adapter->pool.data_status_read);
763 zfcp_fsf_req_free(fsf_req);
765 zfcp_hba_dbf_event_fsf_unsol("fail", adapter, NULL);
767 write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags);
772 zfcp_fsf_status_read_port_closed(struct zfcp_fsf_req *fsf_req)
774 struct fsf_status_read_buffer *status_buffer;
775 struct zfcp_adapter *adapter;
776 struct zfcp_port *port;
779 status_buffer = (struct fsf_status_read_buffer *) fsf_req->data;
780 adapter = fsf_req->adapter;
782 read_lock_irqsave(&zfcp_data.config_lock, flags);
783 list_for_each_entry(port, &adapter->port_list_head, list)
784 if (port->d_id == (status_buffer->d_id & ZFCP_DID_MASK))
786 read_unlock_irqrestore(&zfcp_data.config_lock, flags);
788 if (!port || (port->d_id != (status_buffer->d_id & ZFCP_DID_MASK))) {
789 ZFCP_LOG_NORMAL("bug: Reopen port indication received for "
790 "nonexisting port with d_id 0x%06x on "
791 "adapter %s. Ignored.\n",
792 status_buffer->d_id & ZFCP_DID_MASK,
793 zfcp_get_busid_by_adapter(adapter));
797 switch (status_buffer->status_subtype) {
799 case FSF_STATUS_READ_SUB_CLOSE_PHYS_PORT:
800 zfcp_erp_port_reopen(port, 0, 101, fsf_req);
803 case FSF_STATUS_READ_SUB_ERROR_PORT:
804 zfcp_erp_port_shutdown(port, 0, 122, fsf_req);
808 ZFCP_LOG_NORMAL("bug: Undefined status subtype received "
809 "for a reopen indication on port with "
810 "d_id 0x%06x on the adapter %s. "
811 "Ignored. (debug info 0x%x)\n",
813 zfcp_get_busid_by_adapter(adapter),
814 status_buffer->status_subtype);
821 * function: zfcp_fsf_status_read_handler
823 * purpose: is called for finished Open Port command
828 zfcp_fsf_status_read_handler(struct zfcp_fsf_req *fsf_req)
831 struct zfcp_adapter *adapter = fsf_req->adapter;
832 struct fsf_status_read_buffer *status_buffer =
833 (struct fsf_status_read_buffer *) fsf_req->data;
834 struct fsf_bit_error_payload *fsf_bit_error;
836 if (fsf_req->status & ZFCP_STATUS_FSFREQ_DISMISSED) {
837 zfcp_hba_dbf_event_fsf_unsol("dism", adapter, status_buffer);
838 mempool_free(status_buffer, adapter->pool.data_status_read);
839 zfcp_fsf_req_free(fsf_req);
843 zfcp_hba_dbf_event_fsf_unsol("read", adapter, status_buffer);
845 switch (status_buffer->status_type) {
847 case FSF_STATUS_READ_PORT_CLOSED:
848 zfcp_fsf_status_read_port_closed(fsf_req);
851 case FSF_STATUS_READ_INCOMING_ELS:
852 zfcp_fsf_incoming_els(fsf_req);
855 case FSF_STATUS_READ_SENSE_DATA_AVAIL:
856 ZFCP_LOG_INFO("unsolicited sense data received (adapter %s)\n",
857 zfcp_get_busid_by_adapter(adapter));
860 case FSF_STATUS_READ_BIT_ERROR_THRESHOLD:
861 fsf_bit_error = (struct fsf_bit_error_payload *)
862 status_buffer->payload;
863 ZFCP_LOG_NORMAL("Warning: bit error threshold data "
864 "received (adapter %s, "
865 "link failures = %i, loss of sync errors = %i, "
866 "loss of signal errors = %i, "
867 "primitive sequence errors = %i, "
868 "invalid transmission word errors = %i, "
869 "CRC errors = %i)\n",
870 zfcp_get_busid_by_adapter(adapter),
871 fsf_bit_error->link_failure_error_count,
872 fsf_bit_error->loss_of_sync_error_count,
873 fsf_bit_error->loss_of_signal_error_count,
874 fsf_bit_error->primitive_sequence_error_count,
875 fsf_bit_error->invalid_transmission_word_error_count,
876 fsf_bit_error->crc_error_count);
877 ZFCP_LOG_INFO("Additional bit error threshold data "
879 "primitive sequence event time-outs = %i, "
880 "elastic buffer overrun errors = %i, "
881 "advertised receive buffer-to-buffer credit = %i, "
882 "current receice buffer-to-buffer credit = %i, "
883 "advertised transmit buffer-to-buffer credit = %i, "
884 "current transmit buffer-to-buffer credit = %i)\n",
885 zfcp_get_busid_by_adapter(adapter),
886 fsf_bit_error->primitive_sequence_event_timeout_count,
887 fsf_bit_error->elastic_buffer_overrun_error_count,
888 fsf_bit_error->advertised_receive_b2b_credit,
889 fsf_bit_error->current_receive_b2b_credit,
890 fsf_bit_error->advertised_transmit_b2b_credit,
891 fsf_bit_error->current_transmit_b2b_credit);
894 case FSF_STATUS_READ_LINK_DOWN:
895 switch (status_buffer->status_subtype) {
896 case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK:
897 ZFCP_LOG_INFO("Physical link to adapter %s is down\n",
898 zfcp_get_busid_by_adapter(adapter));
899 zfcp_fsf_link_down_info_eval(fsf_req, 38,
900 (struct fsf_link_down_info *)
901 &status_buffer->payload);
903 case FSF_STATUS_READ_SUB_FDISC_FAILED:
904 ZFCP_LOG_INFO("Local link to adapter %s is down "
905 "due to failed FDISC login\n",
906 zfcp_get_busid_by_adapter(adapter));
907 zfcp_fsf_link_down_info_eval(fsf_req, 39,
908 (struct fsf_link_down_info *)
909 &status_buffer->payload);
911 case FSF_STATUS_READ_SUB_FIRMWARE_UPDATE:
912 ZFCP_LOG_INFO("Local link to adapter %s is down "
913 "due to firmware update on adapter\n",
914 zfcp_get_busid_by_adapter(adapter));
915 zfcp_fsf_link_down_info_eval(fsf_req, 40, NULL);
918 ZFCP_LOG_INFO("Local link to adapter %s is down "
919 "due to unknown reason\n",
920 zfcp_get_busid_by_adapter(adapter));
921 zfcp_fsf_link_down_info_eval(fsf_req, 41, NULL);
925 case FSF_STATUS_READ_LINK_UP:
926 ZFCP_LOG_NORMAL("Local link to adapter %s was replugged. "
927 "Restarting operations on this adapter\n",
928 zfcp_get_busid_by_adapter(adapter));
929 /* All ports should be marked as ready to run again */
930 zfcp_erp_modify_adapter_status(adapter, 30, NULL,
931 ZFCP_STATUS_COMMON_RUNNING,
933 zfcp_erp_adapter_reopen(adapter,
934 ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED
935 | ZFCP_STATUS_COMMON_ERP_FAILED,
939 case FSF_STATUS_READ_NOTIFICATION_LOST:
940 ZFCP_LOG_NORMAL("Unsolicited status notification(s) lost: "
941 "adapter %s%s%s%s%s%s%s%s%s\n",
942 zfcp_get_busid_by_adapter(adapter),
943 (status_buffer->status_subtype &
944 FSF_STATUS_READ_SUB_INCOMING_ELS) ?
945 ", incoming ELS" : "",
946 (status_buffer->status_subtype &
947 FSF_STATUS_READ_SUB_SENSE_DATA) ?
949 (status_buffer->status_subtype &
950 FSF_STATUS_READ_SUB_LINK_STATUS) ?
951 ", link status change" : "",
952 (status_buffer->status_subtype &
953 FSF_STATUS_READ_SUB_PORT_CLOSED) ?
955 (status_buffer->status_subtype &
956 FSF_STATUS_READ_SUB_BIT_ERROR_THRESHOLD) ?
957 ", bit error exception" : "",
958 (status_buffer->status_subtype &
959 FSF_STATUS_READ_SUB_ACT_UPDATED) ?
961 (status_buffer->status_subtype &
962 FSF_STATUS_READ_SUB_ACT_HARDENED) ?
963 ", ACT hardening" : "",
964 (status_buffer->status_subtype &
965 FSF_STATUS_READ_SUB_FEATURE_UPDATE_ALERT) ?
966 ", adapter feature change" : "");
968 if (status_buffer->status_subtype &
969 FSF_STATUS_READ_SUB_ACT_UPDATED)
970 zfcp_erp_adapter_access_changed(adapter, 135, fsf_req);
973 case FSF_STATUS_READ_CFDC_UPDATED:
974 ZFCP_LOG_NORMAL("CFDC has been updated on the adapter %s\n",
975 zfcp_get_busid_by_adapter(adapter));
976 zfcp_erp_adapter_access_changed(adapter, 136, fsf_req);
979 case FSF_STATUS_READ_CFDC_HARDENED:
980 switch (status_buffer->status_subtype) {
981 case FSF_STATUS_READ_SUB_CFDC_HARDENED_ON_SE:
982 ZFCP_LOG_NORMAL("CFDC of adapter %s saved on SE\n",
983 zfcp_get_busid_by_adapter(adapter));
985 case FSF_STATUS_READ_SUB_CFDC_HARDENED_ON_SE2:
986 ZFCP_LOG_NORMAL("CFDC of adapter %s has been copied "
987 "to the secondary SE\n",
988 zfcp_get_busid_by_adapter(adapter));
991 ZFCP_LOG_NORMAL("CFDC of adapter %s has been hardened\n",
992 zfcp_get_busid_by_adapter(adapter));
996 case FSF_STATUS_READ_FEATURE_UPDATE_ALERT:
997 ZFCP_LOG_INFO("List of supported features on adapter %s has "
998 "been changed from 0x%08X to 0x%08X\n",
999 zfcp_get_busid_by_adapter(adapter),
1000 *(u32*) (status_buffer->payload + 4),
1001 *(u32*) (status_buffer->payload));
1002 adapter->adapter_features = *(u32*) status_buffer->payload;
1006 ZFCP_LOG_NORMAL("warning: An unsolicited status packet of unknown "
1007 "type was received (debug info 0x%x)\n",
1008 status_buffer->status_type);
1009 ZFCP_LOG_DEBUG("Dump of status_read_buffer %p:\n",
1011 ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG,
1012 (char *) status_buffer,
1013 sizeof (struct fsf_status_read_buffer));
1016 mempool_free(status_buffer, adapter->pool.data_status_read);
1017 zfcp_fsf_req_free(fsf_req);
1019 * recycle buffer and start new request repeat until outbound
1020 * queue is empty or adapter shutdown is requested
1024 * we may wait in the req_create for 5s during shutdown, so
1025 * qdio_cleanup will have to wait at least that long before returning
1026 * with failure to allow us a proper cleanup under all circumstances
1030 * allocation failure possible? (Is this code needed?)
1033 atomic_inc(&adapter->stat_miss);
1034 schedule_work(&adapter->stat_work);
1040 * function: zfcp_fsf_abort_fcp_command
1042 * purpose: tells FSF to abort a running SCSI command
1044 * returns: address of initiated FSF request
1045 * NULL - request could not be initiated
1047 * FIXME(design): should be watched by a timeout !!!
1048 * FIXME(design) shouldn't this be modified to return an int
1049 * also...don't know how though
1051 struct zfcp_fsf_req *
1052 zfcp_fsf_abort_fcp_command(unsigned long old_req_id,
1053 struct zfcp_adapter *adapter,
1054 struct zfcp_unit *unit, int req_flags)
1056 volatile struct qdio_buffer_element *sbale;
1057 struct zfcp_fsf_req *fsf_req = NULL;
1058 unsigned long lock_flags;
1061 /* setup new FSF request */
1062 retval = zfcp_fsf_req_create(adapter, FSF_QTCB_ABORT_FCP_CMND,
1063 req_flags, adapter->pool.fsf_req_abort,
1064 &lock_flags, &fsf_req);
1066 ZFCP_LOG_INFO("error: Failed to create an abort command "
1067 "request for lun 0x%016Lx on port 0x%016Lx "
1071 zfcp_get_busid_by_adapter(adapter));
1075 if (unlikely(!atomic_test_mask(ZFCP_STATUS_COMMON_UNBLOCKED,
1079 sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
1080 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
1081 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
1083 fsf_req->data = (unsigned long) unit;
1085 /* set handles of unit and its parent port in QTCB */
1086 fsf_req->qtcb->header.lun_handle = unit->handle;
1087 fsf_req->qtcb->header.port_handle = unit->port->handle;
1089 /* set handle of request which should be aborted */
1090 fsf_req->qtcb->bottom.support.req_handle = (u64) old_req_id;
1092 zfcp_fsf_start_timer(fsf_req, ZFCP_SCSI_ER_TIMEOUT);
1093 retval = zfcp_fsf_req_send(fsf_req);
1098 zfcp_fsf_req_free(fsf_req);
1102 write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags);
1107 * function: zfcp_fsf_abort_fcp_command_handler
1109 * purpose: is called for finished Abort FCP Command request
1114 zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req *new_fsf_req)
1116 int retval = -EINVAL;
1117 struct zfcp_unit *unit;
1118 union fsf_status_qual *fsf_stat_qual =
1119 &new_fsf_req->qtcb->header.fsf_status_qual;
1121 if (new_fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) {
1122 /* do not set ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED */
1123 goto skip_fsfstatus;
1126 unit = (struct zfcp_unit *) new_fsf_req->data;
1128 /* evaluate FSF status in QTCB */
1129 switch (new_fsf_req->qtcb->header.fsf_status) {
1131 case FSF_PORT_HANDLE_NOT_VALID:
1132 if (fsf_stat_qual->word[0] != fsf_stat_qual->word[1]) {
1134 * In this case a command that was sent prior to a port
1135 * reopen was aborted (handles are different). This is
1139 ZFCP_LOG_INFO("Temporary port identifier 0x%x for "
1140 "port 0x%016Lx on adapter %s invalid. "
1141 "This may happen occasionally.\n",
1144 zfcp_get_busid_by_unit(unit));
1145 ZFCP_LOG_INFO("status qualifier:\n");
1146 ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_INFO,
1147 (char *) &new_fsf_req->qtcb->header.
1149 sizeof (union fsf_status_qual));
1150 /* Let's hope this sorts out the mess */
1151 zfcp_erp_adapter_reopen(unit->port->adapter, 0, 104,
1153 new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1157 case FSF_LUN_HANDLE_NOT_VALID:
1158 if (fsf_stat_qual->word[0] != fsf_stat_qual->word[1]) {
1160 * In this case a command that was sent prior to a unit
1161 * reopen was aborted (handles are different).
1166 ("Warning: Temporary LUN identifier 0x%x of LUN "
1167 "0x%016Lx on port 0x%016Lx on adapter %s is "
1168 "invalid. This may happen in rare cases. "
1169 "Trying to re-establish link.\n",
1173 zfcp_get_busid_by_unit(unit));
1174 ZFCP_LOG_DEBUG("Status qualifier data:\n");
1175 ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG,
1176 (char *) &new_fsf_req->qtcb->header.
1178 sizeof (union fsf_status_qual));
1179 /* Let's hope this sorts out the mess */
1180 zfcp_erp_port_reopen(unit->port, 0, 105, new_fsf_req);
1181 new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1185 case FSF_FCP_COMMAND_DOES_NOT_EXIST:
1187 new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED;
1190 case FSF_PORT_BOXED:
1191 ZFCP_LOG_INFO("Remote port 0x%016Lx on adapter %s needs to "
1192 "be reopened\n", unit->port->wwpn,
1193 zfcp_get_busid_by_unit(unit));
1194 zfcp_erp_port_boxed(unit->port, 47, new_fsf_req);
1195 new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR
1196 | ZFCP_STATUS_FSFREQ_RETRY;
1201 "unit 0x%016Lx on port 0x%016Lx on adapter %s needs "
1203 unit->fcp_lun, unit->port->wwpn,
1204 zfcp_get_busid_by_unit(unit));
1205 zfcp_erp_unit_boxed(unit, 48, new_fsf_req);
1206 new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR
1207 | ZFCP_STATUS_FSFREQ_RETRY;
1210 case FSF_ADAPTER_STATUS_AVAILABLE:
1211 switch (new_fsf_req->qtcb->header.fsf_status_qual.word[0]) {
1212 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1213 zfcp_test_link(unit->port);
1214 new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1216 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1217 /* SCSI stack will escalate */
1218 new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1222 ("bug: Wrong status qualifier 0x%x arrived.\n",
1223 new_fsf_req->qtcb->header.fsf_status_qual.word[0]);
1230 new_fsf_req->status |= ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED;
1234 ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented "
1235 "(debug info 0x%x)\n",
1236 new_fsf_req->qtcb->header.fsf_status);
1244 * zfcp_use_one_sbal - checks whether req buffer and resp bother each fit into
1246 * Two scatter-gather lists are passed, one for the reqeust and one for the
1250 zfcp_use_one_sbal(struct scatterlist *req, int req_count,
1251 struct scatterlist *resp, int resp_count)
1253 return ((req_count == 1) &&
1254 (resp_count == 1) &&
1255 (((unsigned long) zfcp_sg_to_address(&req[0]) &
1257 ((unsigned long) (zfcp_sg_to_address(&req[0]) +
1258 req[0].length - 1) & PAGE_MASK)) &&
1259 (((unsigned long) zfcp_sg_to_address(&resp[0]) &
1261 ((unsigned long) (zfcp_sg_to_address(&resp[0]) +
1262 resp[0].length - 1) & PAGE_MASK)));
1266 * zfcp_fsf_send_ct - initiate a Generic Service request (FC-GS)
1267 * @ct: pointer to struct zfcp_send_ct which conatins all needed data for
1269 * @pool: pointer to memory pool, if non-null this pool is used to allocate
1270 * a struct zfcp_fsf_req
1271 * @erp_action: pointer to erp_action, if non-null the Generic Service request
1272 * is sent within error recovery
1275 zfcp_fsf_send_ct(struct zfcp_send_ct *ct, mempool_t *pool,
1276 struct zfcp_erp_action *erp_action)
1278 volatile struct qdio_buffer_element *sbale;
1279 struct zfcp_port *port;
1280 struct zfcp_adapter *adapter;
1281 struct zfcp_fsf_req *fsf_req;
1282 unsigned long lock_flags;
1287 adapter = port->adapter;
1289 ret = zfcp_fsf_req_create(adapter, FSF_QTCB_SEND_GENERIC,
1290 ZFCP_WAIT_FOR_SBAL | ZFCP_REQ_AUTO_CLEANUP,
1291 pool, &lock_flags, &fsf_req);
1293 ZFCP_LOG_INFO("error: Could not create CT request (FC-GS) for "
1295 zfcp_get_busid_by_adapter(adapter));
1299 sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
1300 if (zfcp_use_one_sbal(ct->req, ct->req_count,
1301 ct->resp, ct->resp_count)){
1302 /* both request buffer and response buffer
1303 fit into one sbale each */
1304 sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE_READ;
1305 sbale[2].addr = zfcp_sg_to_address(&ct->req[0]);
1306 sbale[2].length = ct->req[0].length;
1307 sbale[3].addr = zfcp_sg_to_address(&ct->resp[0]);
1308 sbale[3].length = ct->resp[0].length;
1309 sbale[3].flags |= SBAL_FLAGS_LAST_ENTRY;
1310 } else if (adapter->adapter_features &
1311 FSF_FEATURE_ELS_CT_CHAINED_SBALS) {
1312 /* try to use chained SBALs */
1313 bytes = zfcp_qdio_sbals_from_sg(fsf_req,
1314 SBAL_FLAGS0_TYPE_WRITE_READ,
1315 ct->req, ct->req_count,
1316 ZFCP_MAX_SBALS_PER_CT_REQ);
1318 ZFCP_LOG_INFO("error: creation of CT request failed "
1320 zfcp_get_busid_by_adapter(adapter));
1328 fsf_req->qtcb->bottom.support.req_buf_length = bytes;
1329 fsf_req->sbale_curr = ZFCP_LAST_SBALE_PER_SBAL;
1330 bytes = zfcp_qdio_sbals_from_sg(fsf_req,
1331 SBAL_FLAGS0_TYPE_WRITE_READ,
1332 ct->resp, ct->resp_count,
1333 ZFCP_MAX_SBALS_PER_CT_REQ);
1335 ZFCP_LOG_INFO("error: creation of CT request failed "
1337 zfcp_get_busid_by_adapter(adapter));
1345 fsf_req->qtcb->bottom.support.resp_buf_length = bytes;
1347 /* reject send generic request */
1349 "error: microcode does not support chained SBALs,"
1350 "CT request too big (adapter %s)\n",
1351 zfcp_get_busid_by_adapter(adapter));
1356 /* settings in QTCB */
1357 fsf_req->qtcb->header.port_handle = port->handle;
1358 fsf_req->qtcb->bottom.support.service_class =
1359 ZFCP_FC_SERVICE_CLASS_DEFAULT;
1360 fsf_req->qtcb->bottom.support.timeout = ct->timeout;
1361 fsf_req->data = (unsigned long) ct;
1363 zfcp_san_dbf_event_ct_request(fsf_req);
1366 erp_action->fsf_req = fsf_req;
1367 fsf_req->erp_action = erp_action;
1368 zfcp_erp_start_timer(fsf_req);
1370 zfcp_fsf_start_timer(fsf_req, ZFCP_FSF_REQUEST_TIMEOUT);
1372 ret = zfcp_fsf_req_send(fsf_req);
1374 ZFCP_LOG_DEBUG("error: initiation of CT request failed "
1375 "(adapter %s, port 0x%016Lx)\n",
1376 zfcp_get_busid_by_adapter(adapter), port->wwpn);
1380 ZFCP_LOG_DEBUG("CT request initiated (adapter %s, port 0x%016Lx)\n",
1381 zfcp_get_busid_by_adapter(adapter), port->wwpn);
1385 zfcp_fsf_req_free(fsf_req);
1386 if (erp_action != NULL) {
1387 erp_action->fsf_req = NULL;
1391 write_unlock_irqrestore(&adapter->request_queue.queue_lock,
1397 * zfcp_fsf_send_ct_handler - handler for Generic Service requests
1398 * @fsf_req: pointer to struct zfcp_fsf_req
1400 * Data specific for the Generic Service request is passed using
1401 * fsf_req->data. There we find the pointer to struct zfcp_send_ct.
1402 * Usually a specific handler for the CT request is called which is
1403 * found in this structure.
1406 zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *fsf_req)
1408 struct zfcp_port *port;
1409 struct zfcp_adapter *adapter;
1410 struct zfcp_send_ct *send_ct;
1411 struct fsf_qtcb_header *header;
1412 struct fsf_qtcb_bottom_support *bottom;
1413 int retval = -EINVAL;
1414 u16 subtable, rule, counter;
1416 adapter = fsf_req->adapter;
1417 send_ct = (struct zfcp_send_ct *) fsf_req->data;
1418 port = send_ct->port;
1419 header = &fsf_req->qtcb->header;
1420 bottom = &fsf_req->qtcb->bottom.support;
1422 if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR)
1423 goto skip_fsfstatus;
1425 /* evaluate FSF status in QTCB */
1426 switch (header->fsf_status) {
1429 zfcp_san_dbf_event_ct_response(fsf_req);
1433 case FSF_SERVICE_CLASS_NOT_SUPPORTED:
1434 ZFCP_LOG_INFO("error: adapter %s does not support fc "
1436 zfcp_get_busid_by_port(port),
1437 ZFCP_FC_SERVICE_CLASS_DEFAULT);
1438 /* stop operation for this adapter */
1439 zfcp_erp_adapter_shutdown(adapter, 0, 123, fsf_req);
1440 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1443 case FSF_ADAPTER_STATUS_AVAILABLE:
1444 switch (header->fsf_status_qual.word[0]){
1445 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1446 /* reopening link to port */
1447 zfcp_test_link(port);
1448 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1450 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1451 /* ERP strategy will escalate */
1452 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1455 ZFCP_LOG_INFO("bug: Wrong status qualifier 0x%x "
1457 header->fsf_status_qual.word[0]);
1462 case FSF_ACCESS_DENIED:
1463 ZFCP_LOG_NORMAL("access denied, cannot send generic service "
1464 "command (adapter %s, port d_id=0x%06x)\n",
1465 zfcp_get_busid_by_port(port), port->d_id);
1466 for (counter = 0; counter < 2; counter++) {
1467 subtable = header->fsf_status_qual.halfword[counter * 2];
1468 rule = header->fsf_status_qual.halfword[counter * 2 + 1];
1470 case FSF_SQ_CFDC_SUBTABLE_OS:
1471 case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN:
1472 case FSF_SQ_CFDC_SUBTABLE_PORT_DID:
1473 case FSF_SQ_CFDC_SUBTABLE_LUN:
1474 ZFCP_LOG_INFO("Access denied (%s rule %d)\n",
1475 zfcp_act_subtable_type[subtable], rule);
1479 zfcp_erp_port_access_denied(port, 55, fsf_req);
1480 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1483 case FSF_GENERIC_COMMAND_REJECTED:
1484 ZFCP_LOG_INFO("generic service command rejected "
1485 "(adapter %s, port d_id=0x%06x)\n",
1486 zfcp_get_busid_by_port(port), port->d_id);
1487 ZFCP_LOG_INFO("status qualifier:\n");
1488 ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_INFO,
1489 (char *) &header->fsf_status_qual,
1490 sizeof (union fsf_status_qual));
1491 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1494 case FSF_PORT_HANDLE_NOT_VALID:
1495 ZFCP_LOG_DEBUG("Temporary port identifier 0x%x for port "
1496 "0x%016Lx on adapter %s invalid. This may "
1497 "happen occasionally.\n", port->handle,
1498 port->wwpn, zfcp_get_busid_by_port(port));
1499 ZFCP_LOG_INFO("status qualifier:\n");
1500 ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_INFO,
1501 (char *) &header->fsf_status_qual,
1502 sizeof (union fsf_status_qual));
1503 zfcp_erp_adapter_reopen(adapter, 0, 106, fsf_req);
1504 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1507 case FSF_PORT_BOXED:
1508 ZFCP_LOG_INFO("port needs to be reopened "
1509 "(adapter %s, port d_id=0x%06x)\n",
1510 zfcp_get_busid_by_port(port), port->d_id);
1511 zfcp_erp_port_boxed(port, 49, fsf_req);
1512 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR
1513 | ZFCP_STATUS_FSFREQ_RETRY;
1516 /* following states should never occure, all cases avoided
1517 in zfcp_fsf_send_ct - but who knows ... */
1518 case FSF_PAYLOAD_SIZE_MISMATCH:
1519 ZFCP_LOG_INFO("payload size mismatch (adapter: %s, "
1520 "req_buf_length=%d, resp_buf_length=%d)\n",
1521 zfcp_get_busid_by_adapter(adapter),
1522 bottom->req_buf_length, bottom->resp_buf_length);
1523 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1525 case FSF_REQUEST_SIZE_TOO_LARGE:
1526 ZFCP_LOG_INFO("request size too large (adapter: %s, "
1527 "req_buf_length=%d)\n",
1528 zfcp_get_busid_by_adapter(adapter),
1529 bottom->req_buf_length);
1530 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1532 case FSF_RESPONSE_SIZE_TOO_LARGE:
1533 ZFCP_LOG_INFO("response size too large (adapter: %s, "
1534 "resp_buf_length=%d)\n",
1535 zfcp_get_busid_by_adapter(adapter),
1536 bottom->resp_buf_length);
1537 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1539 case FSF_SBAL_MISMATCH:
1540 ZFCP_LOG_INFO("SBAL mismatch (adapter: %s, req_buf_length=%d, "
1541 "resp_buf_length=%d)\n",
1542 zfcp_get_busid_by_adapter(adapter),
1543 bottom->req_buf_length, bottom->resp_buf_length);
1544 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1548 ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented "
1549 "(debug info 0x%x)\n", header->fsf_status);
1554 send_ct->status = retval;
1556 if (send_ct->handler != NULL)
1557 send_ct->handler(send_ct->handler_data);
1563 * zfcp_fsf_send_els - initiate an ELS command (FC-FS)
1564 * @els: pointer to struct zfcp_send_els which contains all needed data for
1568 zfcp_fsf_send_els(struct zfcp_send_els *els)
1570 volatile struct qdio_buffer_element *sbale;
1571 struct zfcp_fsf_req *fsf_req;
1573 struct zfcp_adapter *adapter;
1574 unsigned long lock_flags;
1579 adapter = els->adapter;
1581 ret = zfcp_fsf_req_create(adapter, FSF_QTCB_SEND_ELS,
1582 ZFCP_REQ_AUTO_CLEANUP,
1583 NULL, &lock_flags, &fsf_req);
1585 ZFCP_LOG_INFO("error: creation of ELS request failed "
1586 "(adapter %s, port d_id: 0x%06x)\n",
1587 zfcp_get_busid_by_adapter(adapter), d_id);
1591 if (unlikely(!atomic_test_mask(ZFCP_STATUS_COMMON_UNBLOCKED,
1592 &els->port->status))) {
1597 sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
1598 if (zfcp_use_one_sbal(els->req, els->req_count,
1599 els->resp, els->resp_count)){
1600 /* both request buffer and response buffer
1601 fit into one sbale each */
1602 sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE_READ;
1603 sbale[2].addr = zfcp_sg_to_address(&els->req[0]);
1604 sbale[2].length = els->req[0].length;
1605 sbale[3].addr = zfcp_sg_to_address(&els->resp[0]);
1606 sbale[3].length = els->resp[0].length;
1607 sbale[3].flags |= SBAL_FLAGS_LAST_ENTRY;
1608 } else if (adapter->adapter_features &
1609 FSF_FEATURE_ELS_CT_CHAINED_SBALS) {
1610 /* try to use chained SBALs */
1611 bytes = zfcp_qdio_sbals_from_sg(fsf_req,
1612 SBAL_FLAGS0_TYPE_WRITE_READ,
1613 els->req, els->req_count,
1614 ZFCP_MAX_SBALS_PER_ELS_REQ);
1616 ZFCP_LOG_INFO("error: creation of ELS request failed "
1617 "(adapter %s, port d_id: 0x%06x)\n",
1618 zfcp_get_busid_by_adapter(adapter), d_id);
1626 fsf_req->qtcb->bottom.support.req_buf_length = bytes;
1627 fsf_req->sbale_curr = ZFCP_LAST_SBALE_PER_SBAL;
1628 bytes = zfcp_qdio_sbals_from_sg(fsf_req,
1629 SBAL_FLAGS0_TYPE_WRITE_READ,
1630 els->resp, els->resp_count,
1631 ZFCP_MAX_SBALS_PER_ELS_REQ);
1633 ZFCP_LOG_INFO("error: creation of ELS request failed "
1634 "(adapter %s, port d_id: 0x%06x)\n",
1635 zfcp_get_busid_by_adapter(adapter), d_id);
1643 fsf_req->qtcb->bottom.support.resp_buf_length = bytes;
1645 /* reject request */
1646 ZFCP_LOG_INFO("error: microcode does not support chained SBALs"
1647 ", ELS request too big (adapter %s, "
1648 "port d_id: 0x%06x)\n",
1649 zfcp_get_busid_by_adapter(adapter), d_id);
1654 /* settings in QTCB */
1655 fsf_req->qtcb->bottom.support.d_id = d_id;
1656 fsf_req->qtcb->bottom.support.service_class =
1657 ZFCP_FC_SERVICE_CLASS_DEFAULT;
1658 fsf_req->qtcb->bottom.support.timeout = ZFCP_ELS_TIMEOUT;
1659 fsf_req->data = (unsigned long) els;
1661 sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
1663 zfcp_san_dbf_event_els_request(fsf_req);
1665 zfcp_fsf_start_timer(fsf_req, ZFCP_FSF_REQUEST_TIMEOUT);
1666 ret = zfcp_fsf_req_send(fsf_req);
1668 ZFCP_LOG_DEBUG("error: initiation of ELS request failed "
1669 "(adapter %s, port d_id: 0x%06x)\n",
1670 zfcp_get_busid_by_adapter(adapter), d_id);
1674 ZFCP_LOG_DEBUG("ELS request initiated (adapter %s, port d_id: "
1675 "0x%06x)\n", zfcp_get_busid_by_adapter(adapter), d_id);
1680 zfcp_fsf_req_free(fsf_req);
1684 write_unlock_irqrestore(&adapter->request_queue.queue_lock,
1691 * zfcp_fsf_send_els_handler - handler for ELS commands
1692 * @fsf_req: pointer to struct zfcp_fsf_req
1694 * Data specific for the ELS command is passed using
1695 * fsf_req->data. There we find the pointer to struct zfcp_send_els.
1696 * Usually a specific handler for the ELS command is called which is
1697 * found in this structure.
1699 static int zfcp_fsf_send_els_handler(struct zfcp_fsf_req *fsf_req)
1701 struct zfcp_adapter *adapter;
1702 struct zfcp_port *port;
1704 struct fsf_qtcb_header *header;
1705 struct fsf_qtcb_bottom_support *bottom;
1706 struct zfcp_send_els *send_els;
1707 int retval = -EINVAL;
1708 u16 subtable, rule, counter;
1710 send_els = (struct zfcp_send_els *) fsf_req->data;
1711 adapter = send_els->adapter;
1712 port = send_els->port;
1713 d_id = send_els->d_id;
1714 header = &fsf_req->qtcb->header;
1715 bottom = &fsf_req->qtcb->bottom.support;
1717 if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR)
1718 goto skip_fsfstatus;
1720 switch (header->fsf_status) {
1723 zfcp_san_dbf_event_els_response(fsf_req);
1727 case FSF_SERVICE_CLASS_NOT_SUPPORTED:
1728 ZFCP_LOG_INFO("error: adapter %s does not support fc "
1730 zfcp_get_busid_by_adapter(adapter),
1731 ZFCP_FC_SERVICE_CLASS_DEFAULT);
1732 /* stop operation for this adapter */
1733 zfcp_erp_adapter_shutdown(adapter, 0, 124, fsf_req);
1734 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1737 case FSF_ADAPTER_STATUS_AVAILABLE:
1738 switch (header->fsf_status_qual.word[0]){
1739 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1740 if (port && (send_els->ls_code != ZFCP_LS_ADISC))
1741 zfcp_test_link(port);
1742 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1744 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1745 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1747 zfcp_handle_els_rjt(header->fsf_status_qual.word[1],
1748 (struct zfcp_ls_rjt_par *)
1749 &header->fsf_status_qual.word[2]);
1751 case FSF_SQ_RETRY_IF_POSSIBLE:
1752 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1755 ZFCP_LOG_INFO("bug: Wrong status qualifier 0x%x\n",
1756 header->fsf_status_qual.word[0]);
1757 ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_INFO,
1758 (char*)header->fsf_status_qual.word, 16);
1762 case FSF_ELS_COMMAND_REJECTED:
1763 ZFCP_LOG_INFO("ELS has been rejected because command filter "
1764 "prohibited sending "
1765 "(adapter: %s, port d_id: 0x%06x)\n",
1766 zfcp_get_busid_by_adapter(adapter), d_id);
1770 case FSF_PAYLOAD_SIZE_MISMATCH:
1772 "ELS request size and ELS response size must be either "
1773 "both 0, or both greater than 0 "
1774 "(adapter: %s, req_buf_length=%d resp_buf_length=%d)\n",
1775 zfcp_get_busid_by_adapter(adapter),
1776 bottom->req_buf_length,
1777 bottom->resp_buf_length);
1780 case FSF_REQUEST_SIZE_TOO_LARGE:
1782 "Length of the ELS request buffer, "
1783 "specified in QTCB bottom, "
1784 "exceeds the size of the buffers "
1785 "that have been allocated for ELS request data "
1786 "(adapter: %s, req_buf_length=%d)\n",
1787 zfcp_get_busid_by_adapter(adapter),
1788 bottom->req_buf_length);
1791 case FSF_RESPONSE_SIZE_TOO_LARGE:
1793 "Length of the ELS response buffer, "
1794 "specified in QTCB bottom, "
1795 "exceeds the size of the buffers "
1796 "that have been allocated for ELS response data "
1797 "(adapter: %s, resp_buf_length=%d)\n",
1798 zfcp_get_busid_by_adapter(adapter),
1799 bottom->resp_buf_length);
1802 case FSF_SBAL_MISMATCH:
1803 /* should never occure, avoided in zfcp_fsf_send_els */
1804 ZFCP_LOG_INFO("SBAL mismatch (adapter: %s, req_buf_length=%d, "
1805 "resp_buf_length=%d)\n",
1806 zfcp_get_busid_by_adapter(adapter),
1807 bottom->req_buf_length, bottom->resp_buf_length);
1808 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1811 case FSF_ACCESS_DENIED:
1812 ZFCP_LOG_NORMAL("access denied, cannot send ELS command "
1813 "(adapter %s, port d_id=0x%06x)\n",
1814 zfcp_get_busid_by_adapter(adapter), d_id);
1815 for (counter = 0; counter < 2; counter++) {
1816 subtable = header->fsf_status_qual.halfword[counter * 2];
1817 rule = header->fsf_status_qual.halfword[counter * 2 + 1];
1819 case FSF_SQ_CFDC_SUBTABLE_OS:
1820 case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN:
1821 case FSF_SQ_CFDC_SUBTABLE_PORT_DID:
1822 case FSF_SQ_CFDC_SUBTABLE_LUN:
1823 ZFCP_LOG_INFO("Access denied (%s rule %d)\n",
1824 zfcp_act_subtable_type[subtable], rule);
1829 zfcp_erp_port_access_denied(port, 56, fsf_req);
1830 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1835 "bug: An unknown FSF Status was presented "
1836 "(adapter: %s, fsf_status=0x%08x)\n",
1837 zfcp_get_busid_by_adapter(adapter),
1838 header->fsf_status);
1839 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1844 send_els->status = retval;
1846 if (send_els->handler)
1847 send_els->handler(send_els->handler_data);
1853 zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action)
1855 volatile struct qdio_buffer_element *sbale;
1856 struct zfcp_fsf_req *fsf_req;
1857 struct zfcp_adapter *adapter = erp_action->adapter;
1858 unsigned long lock_flags;
1861 /* setup new FSF request */
1862 retval = zfcp_fsf_req_create(adapter,
1863 FSF_QTCB_EXCHANGE_CONFIG_DATA,
1864 ZFCP_REQ_AUTO_CLEANUP,
1865 adapter->pool.fsf_req_erp,
1866 &lock_flags, &fsf_req);
1868 ZFCP_LOG_INFO("error: Could not create exchange configuration "
1869 "data request for adapter %s.\n",
1870 zfcp_get_busid_by_adapter(adapter));
1871 write_unlock_irqrestore(&adapter->request_queue.queue_lock,
1876 sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
1877 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
1878 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
1880 fsf_req->qtcb->bottom.config.feature_selection =
1882 FSF_FEATURE_LUN_SHARING |
1883 FSF_FEATURE_NOTIFICATION_LOST |
1884 FSF_FEATURE_UPDATE_ALERT;
1885 fsf_req->erp_action = erp_action;
1886 erp_action->fsf_req = fsf_req;
1888 zfcp_erp_start_timer(fsf_req);
1889 retval = zfcp_fsf_req_send(fsf_req);
1890 write_unlock_irqrestore(&adapter->request_queue.queue_lock,
1893 ZFCP_LOG_INFO("error: Could not send exchange configuration "
1894 "data command on the adapter %s\n",
1895 zfcp_get_busid_by_adapter(adapter));
1896 zfcp_fsf_req_free(fsf_req);
1897 erp_action->fsf_req = NULL;
1900 ZFCP_LOG_DEBUG("exchange configuration data request initiated "
1902 zfcp_get_busid_by_adapter(adapter));
1908 zfcp_fsf_exchange_config_data_sync(struct zfcp_adapter *adapter,
1909 struct fsf_qtcb_bottom_config *data)
1911 volatile struct qdio_buffer_element *sbale;
1912 struct zfcp_fsf_req *fsf_req;
1913 unsigned long lock_flags;
1916 /* setup new FSF request */
1917 retval = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_CONFIG_DATA,
1918 ZFCP_WAIT_FOR_SBAL, NULL, &lock_flags,
1921 ZFCP_LOG_INFO("error: Could not create exchange configuration "
1922 "data request for adapter %s.\n",
1923 zfcp_get_busid_by_adapter(adapter));
1924 write_unlock_irqrestore(&adapter->request_queue.queue_lock,
1929 sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
1930 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
1931 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
1933 fsf_req->qtcb->bottom.config.feature_selection =
1935 FSF_FEATURE_LUN_SHARING |
1936 FSF_FEATURE_NOTIFICATION_LOST |
1937 FSF_FEATURE_UPDATE_ALERT;
1940 fsf_req->data = (unsigned long) data;
1942 zfcp_fsf_start_timer(fsf_req, ZFCP_FSF_REQUEST_TIMEOUT);
1943 retval = zfcp_fsf_req_send(fsf_req);
1944 write_unlock_irqrestore(&adapter->request_queue.queue_lock,
1947 ZFCP_LOG_INFO("error: Could not send exchange configuration "
1948 "data command on the adapter %s\n",
1949 zfcp_get_busid_by_adapter(adapter));
1951 wait_event(fsf_req->completion_wq,
1952 fsf_req->status & ZFCP_STATUS_FSFREQ_COMPLETED);
1954 zfcp_fsf_req_free(fsf_req);
1960 * zfcp_fsf_exchange_config_evaluate
1961 * @fsf_req: fsf_req which belongs to xchg config data request
1962 * @xchg_ok: specifies if xchg config data was incomplete or complete (0/1)
1964 * returns: -EIO on error, 0 otherwise
1967 zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req *fsf_req, int xchg_ok)
1969 struct fsf_qtcb_bottom_config *bottom;
1970 struct zfcp_adapter *adapter = fsf_req->adapter;
1971 struct Scsi_Host *shost = adapter->scsi_host;
1973 bottom = &fsf_req->qtcb->bottom.config;
1974 ZFCP_LOG_DEBUG("low/high QTCB version 0x%x/0x%x of FSF\n",
1975 bottom->low_qtcb_version, bottom->high_qtcb_version);
1976 adapter->fsf_lic_version = bottom->lic_version;
1977 adapter->adapter_features = bottom->adapter_features;
1978 adapter->connection_features = bottom->connection_features;
1979 adapter->peer_wwpn = 0;
1980 adapter->peer_wwnn = 0;
1981 adapter->peer_d_id = 0;
1986 memcpy((struct fsf_qtcb_bottom_config *) fsf_req->data,
1987 bottom, sizeof (struct fsf_qtcb_bottom_config));
1989 fc_host_node_name(shost) = bottom->nport_serv_param.wwnn;
1990 fc_host_port_name(shost) = bottom->nport_serv_param.wwpn;
1991 fc_host_port_id(shost) = bottom->s_id & ZFCP_DID_MASK;
1992 fc_host_speed(shost) = bottom->fc_link_speed;
1993 fc_host_supported_classes(shost) =
1994 FC_COS_CLASS2 | FC_COS_CLASS3;
1995 adapter->hydra_version = bottom->adapter_type;
1996 adapter->timer_ticks = bottom->timer_interval;
1997 if (fc_host_permanent_port_name(shost) == -1)
1998 fc_host_permanent_port_name(shost) =
1999 fc_host_port_name(shost);
2000 if (bottom->fc_topology == FSF_TOPO_P2P) {
2001 adapter->peer_d_id = bottom->peer_d_id & ZFCP_DID_MASK;
2002 adapter->peer_wwpn = bottom->plogi_payload.wwpn;
2003 adapter->peer_wwnn = bottom->plogi_payload.wwnn;
2004 fc_host_port_type(shost) = FC_PORTTYPE_PTP;
2005 } else if (bottom->fc_topology == FSF_TOPO_FABRIC)
2006 fc_host_port_type(shost) = FC_PORTTYPE_NPORT;
2007 else if (bottom->fc_topology == FSF_TOPO_AL)
2008 fc_host_port_type(shost) = FC_PORTTYPE_NLPORT;
2010 fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN;
2012 fc_host_node_name(shost) = 0;
2013 fc_host_port_name(shost) = 0;
2014 fc_host_port_id(shost) = 0;
2015 fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN;
2016 fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN;
2017 adapter->hydra_version = 0;
2020 if (adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT) {
2021 adapter->hardware_version = bottom->hardware_version;
2022 memcpy(fc_host_serial_number(shost), bottom->serial_number,
2023 min(FC_SERIAL_NUMBER_SIZE, 17));
2024 EBCASC(fc_host_serial_number(shost),
2025 min(FC_SERIAL_NUMBER_SIZE, 17));
2028 if (fsf_req->erp_action)
2029 ZFCP_LOG_NORMAL("The adapter %s reported the following "
2030 "characteristics:\n"
2031 "WWNN 0x%016Lx, WWPN 0x%016Lx, "
2033 "adapter version 0x%x, "
2034 "LIC version 0x%x, "
2035 "FC link speed %d Gb/s\n",
2036 zfcp_get_busid_by_adapter(adapter),
2037 (wwn_t) fc_host_node_name(shost),
2038 (wwn_t) fc_host_port_name(shost),
2039 fc_host_port_id(shost),
2040 adapter->hydra_version,
2041 adapter->fsf_lic_version,
2042 fc_host_speed(shost));
2043 if (ZFCP_QTCB_VERSION < bottom->low_qtcb_version) {
2044 ZFCP_LOG_NORMAL("error: the adapter %s "
2045 "only supports newer control block "
2046 "versions in comparison to this device "
2047 "driver (try updated device driver)\n",
2048 zfcp_get_busid_by_adapter(adapter));
2049 zfcp_erp_adapter_shutdown(adapter, 0, 125, fsf_req);
2052 if (ZFCP_QTCB_VERSION > bottom->high_qtcb_version) {
2053 ZFCP_LOG_NORMAL("error: the adapter %s "
2054 "only supports older control block "
2055 "versions than this device driver uses"
2056 "(consider a microcode upgrade)\n",
2057 zfcp_get_busid_by_adapter(adapter));
2058 zfcp_erp_adapter_shutdown(adapter, 0, 126, fsf_req);
2065 * function: zfcp_fsf_exchange_config_data_handler
2067 * purpose: is called for finished Exchange Configuration Data command
2072 zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *fsf_req)
2074 struct fsf_qtcb_bottom_config *bottom;
2075 struct zfcp_adapter *adapter = fsf_req->adapter;
2076 struct fsf_qtcb *qtcb = fsf_req->qtcb;
2078 if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR)
2081 switch (qtcb->header.fsf_status) {
2084 if (zfcp_fsf_exchange_config_evaluate(fsf_req, 1))
2087 switch (fc_host_port_type(adapter->scsi_host)) {
2088 case FC_PORTTYPE_PTP:
2089 ZFCP_LOG_NORMAL("Point-to-Point fibrechannel "
2090 "configuration detected at adapter %s\n"
2091 "Peer WWNN 0x%016llx, "
2092 "peer WWPN 0x%016llx, "
2093 "peer d_id 0x%06x\n",
2094 zfcp_get_busid_by_adapter(adapter),
2097 adapter->peer_d_id);
2099 case FC_PORTTYPE_NLPORT:
2100 ZFCP_LOG_NORMAL("error: Arbitrated loop fibrechannel "
2101 "topology detected at adapter %s "
2102 "unsupported, shutting down adapter\n",
2103 zfcp_get_busid_by_adapter(adapter));
2104 zfcp_erp_adapter_shutdown(adapter, 0, 127, fsf_req);
2106 case FC_PORTTYPE_NPORT:
2107 if (fsf_req->erp_action)
2108 ZFCP_LOG_NORMAL("Switched fabric fibrechannel "
2109 "network detected at adapter "
2111 zfcp_get_busid_by_adapter(adapter));
2114 ZFCP_LOG_NORMAL("bug: The fibrechannel topology "
2115 "reported by the exchange "
2116 "configuration command for "
2117 "the adapter %s is not "
2118 "of a type known to the zfcp "
2119 "driver, shutting down adapter\n",
2120 zfcp_get_busid_by_adapter(adapter));
2121 zfcp_erp_adapter_shutdown(adapter, 0, 128, fsf_req);
2124 bottom = &qtcb->bottom.config;
2125 if (bottom->max_qtcb_size < sizeof(struct fsf_qtcb)) {
2126 ZFCP_LOG_NORMAL("bug: Maximum QTCB size (%d bytes) "
2127 "allowed by the adapter %s "
2128 "is lower than the minimum "
2129 "required by the driver (%ld bytes).\n",
2130 bottom->max_qtcb_size,
2131 zfcp_get_busid_by_adapter(adapter),
2132 sizeof(struct fsf_qtcb));
2133 zfcp_erp_adapter_shutdown(adapter, 0, 129, fsf_req);
2136 atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK,
2139 case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE:
2140 if (zfcp_fsf_exchange_config_evaluate(fsf_req, 0))
2143 atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK,
2146 zfcp_fsf_link_down_info_eval(fsf_req, 42,
2147 &qtcb->header.fsf_status_qual.link_down_info);
2150 zfcp_erp_adapter_shutdown(adapter, 0, 130, fsf_req);
2157 * zfcp_fsf_exchange_port_data - request information about local port
2158 * @erp_action: ERP action for the adapter for which port data is requested
2161 zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action)
2163 volatile struct qdio_buffer_element *sbale;
2164 struct zfcp_fsf_req *fsf_req;
2165 struct zfcp_adapter *adapter = erp_action->adapter;
2166 unsigned long lock_flags;
2169 if (!(adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)) {
2170 ZFCP_LOG_INFO("error: exchange port data "
2171 "command not supported by adapter %s\n",
2172 zfcp_get_busid_by_adapter(adapter));
2176 /* setup new FSF request */
2177 retval = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_PORT_DATA,
2178 ZFCP_REQ_AUTO_CLEANUP,
2179 adapter->pool.fsf_req_erp,
2180 &lock_flags, &fsf_req);
2182 ZFCP_LOG_INFO("error: Out of resources. Could not create an "
2183 "exchange port data request for "
2184 "the adapter %s.\n",
2185 zfcp_get_busid_by_adapter(adapter));
2186 write_unlock_irqrestore(&adapter->request_queue.queue_lock,
2191 sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
2192 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
2193 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
2195 erp_action->fsf_req = fsf_req;
2196 fsf_req->erp_action = erp_action;
2197 zfcp_erp_start_timer(fsf_req);
2199 retval = zfcp_fsf_req_send(fsf_req);
2200 write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags);
2203 ZFCP_LOG_INFO("error: Could not send an exchange port data "
2204 "command on the adapter %s\n",
2205 zfcp_get_busid_by_adapter(adapter));
2206 zfcp_fsf_req_free(fsf_req);
2207 erp_action->fsf_req = NULL;
2210 ZFCP_LOG_DEBUG("exchange port data request initiated "
2212 zfcp_get_busid_by_adapter(adapter));
2218 * zfcp_fsf_exchange_port_data_sync - request information about local port
2219 * and wait until information is ready
2222 zfcp_fsf_exchange_port_data_sync(struct zfcp_adapter *adapter,
2223 struct fsf_qtcb_bottom_port *data)
2225 volatile struct qdio_buffer_element *sbale;
2226 struct zfcp_fsf_req *fsf_req;
2227 unsigned long lock_flags;
2230 if (!(adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)) {
2231 ZFCP_LOG_INFO("error: exchange port data "
2232 "command not supported by adapter %s\n",
2233 zfcp_get_busid_by_adapter(adapter));
2237 /* setup new FSF request */
2238 retval = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_PORT_DATA,
2239 0, NULL, &lock_flags, &fsf_req);
2241 ZFCP_LOG_INFO("error: Out of resources. Could not create an "
2242 "exchange port data request for "
2243 "the adapter %s.\n",
2244 zfcp_get_busid_by_adapter(adapter));
2245 write_unlock_irqrestore(&adapter->request_queue.queue_lock,
2251 fsf_req->data = (unsigned long) data;
2253 sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
2254 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
2255 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
2257 zfcp_fsf_start_timer(fsf_req, ZFCP_FSF_REQUEST_TIMEOUT);
2258 retval = zfcp_fsf_req_send(fsf_req);
2259 write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags);
2262 ZFCP_LOG_INFO("error: Could not send an exchange port data "
2263 "command on the adapter %s\n",
2264 zfcp_get_busid_by_adapter(adapter));
2266 wait_event(fsf_req->completion_wq,
2267 fsf_req->status & ZFCP_STATUS_FSFREQ_COMPLETED);
2269 zfcp_fsf_req_free(fsf_req);
2275 * zfcp_fsf_exchange_port_evaluate
2276 * @fsf_req: fsf_req which belongs to xchg port data request
2277 * @xchg_ok: specifies if xchg port data was incomplete or complete (0/1)
2280 zfcp_fsf_exchange_port_evaluate(struct zfcp_fsf_req *fsf_req, int xchg_ok)
2282 struct zfcp_adapter *adapter;
2283 struct fsf_qtcb_bottom_port *bottom;
2284 struct Scsi_Host *shost;
2286 adapter = fsf_req->adapter;
2287 bottom = &fsf_req->qtcb->bottom.port;
2288 shost = adapter->scsi_host;
2291 memcpy((struct fsf_qtcb_bottom_port*) fsf_req->data, bottom,
2292 sizeof(struct fsf_qtcb_bottom_port));
2294 if (adapter->connection_features & FSF_FEATURE_NPIV_MODE)
2295 fc_host_permanent_port_name(shost) = bottom->wwpn;
2297 fc_host_permanent_port_name(shost) = fc_host_port_name(shost);
2298 fc_host_maxframe_size(shost) = bottom->maximum_frame_size;
2299 fc_host_supported_speeds(shost) = bottom->supported_speed;
2303 * zfcp_fsf_exchange_port_data_handler - handler for exchange_port_data request
2304 * @fsf_req: pointer to struct zfcp_fsf_req
2307 zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *fsf_req)
2309 struct zfcp_adapter *adapter;
2310 struct fsf_qtcb *qtcb;
2312 adapter = fsf_req->adapter;
2313 qtcb = fsf_req->qtcb;
2315 if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR)
2318 switch (qtcb->header.fsf_status) {
2320 zfcp_fsf_exchange_port_evaluate(fsf_req, 1);
2321 atomic_set_mask(ZFCP_STATUS_ADAPTER_XPORT_OK, &adapter->status);
2323 case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE:
2324 zfcp_fsf_exchange_port_evaluate(fsf_req, 0);
2325 atomic_set_mask(ZFCP_STATUS_ADAPTER_XPORT_OK, &adapter->status);
2326 zfcp_fsf_link_down_info_eval(fsf_req, 43,
2327 &qtcb->header.fsf_status_qual.link_down_info);
2334 * function: zfcp_fsf_open_port
2338 * returns: address of initiated FSF request
2339 * NULL - request could not be initiated
2342 zfcp_fsf_open_port(struct zfcp_erp_action *erp_action)
2344 volatile struct qdio_buffer_element *sbale;
2345 struct zfcp_fsf_req *fsf_req;
2346 unsigned long lock_flags;
2349 /* setup new FSF request */
2350 retval = zfcp_fsf_req_create(erp_action->adapter,
2351 FSF_QTCB_OPEN_PORT_WITH_DID,
2352 ZFCP_WAIT_FOR_SBAL | ZFCP_REQ_AUTO_CLEANUP,
2353 erp_action->adapter->pool.fsf_req_erp,
2354 &lock_flags, &fsf_req);
2356 ZFCP_LOG_INFO("error: Could not create open port request "
2357 "for port 0x%016Lx on adapter %s.\n",
2358 erp_action->port->wwpn,
2359 zfcp_get_busid_by_adapter(erp_action->adapter));
2363 sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
2364 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
2365 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
2367 fsf_req->qtcb->bottom.support.d_id = erp_action->port->d_id;
2368 atomic_set_mask(ZFCP_STATUS_COMMON_OPENING, &erp_action->port->status);
2369 fsf_req->data = (unsigned long) erp_action->port;
2370 fsf_req->erp_action = erp_action;
2371 erp_action->fsf_req = fsf_req;
2373 zfcp_erp_start_timer(fsf_req);
2374 retval = zfcp_fsf_req_send(fsf_req);
2376 ZFCP_LOG_INFO("error: Could not send open port request for "
2377 "port 0x%016Lx on adapter %s.\n",
2378 erp_action->port->wwpn,
2379 zfcp_get_busid_by_adapter(erp_action->adapter));
2380 zfcp_fsf_req_free(fsf_req);
2381 erp_action->fsf_req = NULL;
2385 ZFCP_LOG_DEBUG("open port request initiated "
2386 "(adapter %s, port 0x%016Lx)\n",
2387 zfcp_get_busid_by_adapter(erp_action->adapter),
2388 erp_action->port->wwpn);
2390 write_unlock_irqrestore(&erp_action->adapter->request_queue.queue_lock,
2396 * function: zfcp_fsf_open_port_handler
2398 * purpose: is called for finished Open Port command
2403 zfcp_fsf_open_port_handler(struct zfcp_fsf_req *fsf_req)
2405 int retval = -EINVAL;
2406 struct zfcp_port *port;
2407 struct fsf_plogi *plogi;
2408 struct fsf_qtcb_header *header;
2409 u16 subtable, rule, counter;
2411 port = (struct zfcp_port *) fsf_req->data;
2412 header = &fsf_req->qtcb->header;
2414 if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) {
2415 /* don't change port status in our bookkeeping */
2416 goto skip_fsfstatus;
2419 /* evaluate FSF status in QTCB */
2420 switch (header->fsf_status) {
2422 case FSF_PORT_ALREADY_OPEN:
2423 ZFCP_LOG_NORMAL("bug: remote port 0x%016Lx on adapter %s "
2424 "is already open.\n",
2425 port->wwpn, zfcp_get_busid_by_port(port));
2427 * This is a bug, however operation should continue normally
2428 * if it is simply ignored
2432 case FSF_ACCESS_DENIED:
2433 ZFCP_LOG_NORMAL("Access denied, cannot open port 0x%016Lx "
2435 port->wwpn, zfcp_get_busid_by_port(port));
2436 for (counter = 0; counter < 2; counter++) {
2437 subtable = header->fsf_status_qual.halfword[counter * 2];
2438 rule = header->fsf_status_qual.halfword[counter * 2 + 1];
2440 case FSF_SQ_CFDC_SUBTABLE_OS:
2441 case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN:
2442 case FSF_SQ_CFDC_SUBTABLE_PORT_DID:
2443 case FSF_SQ_CFDC_SUBTABLE_LUN:
2444 ZFCP_LOG_INFO("Access denied (%s rule %d)\n",
2445 zfcp_act_subtable_type[subtable], rule);
2449 zfcp_erp_port_access_denied(port, 57, fsf_req);
2450 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2453 case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED:
2454 ZFCP_LOG_INFO("error: The FSF adapter is out of resources. "
2455 "The remote port 0x%016Lx on adapter %s "
2456 "could not be opened. Disabling it.\n",
2457 port->wwpn, zfcp_get_busid_by_port(port));
2458 zfcp_erp_port_failed(port, 31, fsf_req);
2459 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2462 case FSF_ADAPTER_STATUS_AVAILABLE:
2463 switch (header->fsf_status_qual.word[0]) {
2464 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
2465 /* ERP strategy will escalate */
2466 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2468 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
2469 /* ERP strategy will escalate */
2470 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2472 case FSF_SQ_NO_RETRY_POSSIBLE:
2473 ZFCP_LOG_NORMAL("The remote port 0x%016Lx on "
2474 "adapter %s could not be opened. "
2477 zfcp_get_busid_by_port(port));
2478 zfcp_erp_port_failed(port, 32, fsf_req);
2479 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2483 ("bug: Wrong status qualifier 0x%x arrived.\n",
2484 header->fsf_status_qual.word[0]);
2490 /* save port handle assigned by FSF */
2491 port->handle = header->port_handle;
2492 ZFCP_LOG_INFO("The remote port 0x%016Lx via adapter %s "
2493 "was opened, it's port handle is 0x%x\n",
2494 port->wwpn, zfcp_get_busid_by_port(port),
2496 /* mark port as open */
2497 atomic_set_mask(ZFCP_STATUS_COMMON_OPEN |
2498 ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
2499 atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED |
2500 ZFCP_STATUS_COMMON_ACCESS_BOXED,
2503 /* check whether D_ID has changed during open */
2505 * FIXME: This check is not airtight, as the FCP channel does
2506 * not monitor closures of target port connections caused on
2507 * the remote side. Thus, they might miss out on invalidating
2508 * locally cached WWPNs (and other N_Port parameters) of gone
2509 * target ports. So, our heroic attempt to make things safe
2510 * could be undermined by 'open port' response data tagged with
2511 * obsolete WWPNs. Another reason to monitor potential
2512 * connection closures ourself at least (by interpreting
2513 * incoming ELS' and unsolicited status). It just crosses my
2514 * mind that one should be able to cross-check by means of
2515 * another GID_PN straight after a port has been opened.
2516 * Alternately, an ADISC/PDISC ELS should suffice, as well.
2518 plogi = (struct fsf_plogi *) fsf_req->qtcb->bottom.support.els;
2519 if (!atomic_test_mask(ZFCP_STATUS_PORT_NO_WWPN, &port->status))
2521 if (fsf_req->qtcb->bottom.support.els1_length <
2522 sizeof (struct fsf_plogi)) {
2524 "warning: insufficient length of "
2525 "PLOGI payload (%i)\n",
2526 fsf_req->qtcb->bottom.support.els1_length);
2527 /* skip sanity check and assume wwpn is ok */
2529 if (plogi->serv_param.wwpn != port->wwpn) {
2530 ZFCP_LOG_INFO("warning: d_id of port "
2531 "0x%016Lx changed during "
2532 "open\n", port->wwpn);
2534 ZFCP_STATUS_PORT_DID_DID,
2537 port->wwnn = plogi->serv_param.wwnn;
2538 zfcp_plogi_evaluate(port, plogi);
2544 case FSF_UNKNOWN_OP_SUBTYPE:
2545 /* should never occure, subtype not set in zfcp_fsf_open_port */
2546 ZFCP_LOG_INFO("unknown operation subtype (adapter: %s, "
2547 "op_subtype=0x%x)\n",
2548 zfcp_get_busid_by_port(port),
2549 fsf_req->qtcb->bottom.support.operation_subtype);
2550 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2554 ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented "
2555 "(debug info 0x%x)\n",
2556 header->fsf_status);
2561 atomic_clear_mask(ZFCP_STATUS_COMMON_OPENING, &port->status);
2566 * function: zfcp_fsf_close_port
2568 * purpose: submit FSF command "close port"
2570 * returns: address of initiated FSF request
2571 * NULL - request could not be initiated
2574 zfcp_fsf_close_port(struct zfcp_erp_action *erp_action)
2576 volatile struct qdio_buffer_element *sbale;
2577 struct zfcp_fsf_req *fsf_req;
2578 unsigned long lock_flags;
2581 /* setup new FSF request */
2582 retval = zfcp_fsf_req_create(erp_action->adapter,
2583 FSF_QTCB_CLOSE_PORT,
2584 ZFCP_WAIT_FOR_SBAL | ZFCP_REQ_AUTO_CLEANUP,
2585 erp_action->adapter->pool.fsf_req_erp,
2586 &lock_flags, &fsf_req);
2588 ZFCP_LOG_INFO("error: Could not create a close port request "
2589 "for port 0x%016Lx on adapter %s.\n",
2590 erp_action->port->wwpn,
2591 zfcp_get_busid_by_adapter(erp_action->adapter));
2595 sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
2596 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
2597 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
2599 atomic_set_mask(ZFCP_STATUS_COMMON_CLOSING, &erp_action->port->status);
2600 fsf_req->data = (unsigned long) erp_action->port;
2601 fsf_req->erp_action = erp_action;
2602 fsf_req->qtcb->header.port_handle = erp_action->port->handle;
2603 fsf_req->erp_action = erp_action;
2604 erp_action->fsf_req = fsf_req;
2606 zfcp_erp_start_timer(fsf_req);
2607 retval = zfcp_fsf_req_send(fsf_req);
2609 ZFCP_LOG_INFO("error: Could not send a close port request for "
2610 "port 0x%016Lx on adapter %s.\n",
2611 erp_action->port->wwpn,
2612 zfcp_get_busid_by_adapter(erp_action->adapter));
2613 zfcp_fsf_req_free(fsf_req);
2614 erp_action->fsf_req = NULL;
2618 ZFCP_LOG_TRACE("close port request initiated "
2619 "(adapter %s, port 0x%016Lx)\n",
2620 zfcp_get_busid_by_adapter(erp_action->adapter),
2621 erp_action->port->wwpn);
2623 write_unlock_irqrestore(&erp_action->adapter->request_queue.queue_lock,
2629 * function: zfcp_fsf_close_port_handler
2631 * purpose: is called for finished Close Port FSF command
2636 zfcp_fsf_close_port_handler(struct zfcp_fsf_req *fsf_req)
2638 int retval = -EINVAL;
2639 struct zfcp_port *port;
2641 port = (struct zfcp_port *) fsf_req->data;
2643 if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) {
2644 /* don't change port status in our bookkeeping */
2645 goto skip_fsfstatus;
2648 /* evaluate FSF status in QTCB */
2649 switch (fsf_req->qtcb->header.fsf_status) {
2651 case FSF_PORT_HANDLE_NOT_VALID:
2652 ZFCP_LOG_INFO("Temporary port identifier 0x%x for port "
2653 "0x%016Lx on adapter %s invalid. This may happen "
2654 "occasionally.\n", port->handle,
2655 port->wwpn, zfcp_get_busid_by_port(port));
2656 ZFCP_LOG_DEBUG("status qualifier:\n");
2657 ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG,
2658 (char *) &fsf_req->qtcb->header.fsf_status_qual,
2659 sizeof (union fsf_status_qual));
2660 zfcp_erp_adapter_reopen(port->adapter, 0, 107, fsf_req);
2661 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2664 case FSF_ADAPTER_STATUS_AVAILABLE:
2665 /* Note: FSF has actually closed the port in this case.
2666 * The status code is just daft. Fingers crossed for a change
2672 ZFCP_LOG_TRACE("remote port 0x016%Lx on adapter %s closed, "
2673 "port handle 0x%x\n", port->wwpn,
2674 zfcp_get_busid_by_port(port), port->handle);
2675 zfcp_erp_modify_port_status(port, 33, fsf_req,
2676 ZFCP_STATUS_COMMON_OPEN,
2682 ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented "
2683 "(debug info 0x%x)\n",
2684 fsf_req->qtcb->header.fsf_status);
2689 atomic_clear_mask(ZFCP_STATUS_COMMON_CLOSING, &port->status);
2694 * function: zfcp_fsf_close_physical_port
2696 * purpose: submit FSF command "close physical port"
2698 * returns: address of initiated FSF request
2699 * NULL - request could not be initiated
2702 zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action)
2704 volatile struct qdio_buffer_element *sbale;
2705 struct zfcp_fsf_req *fsf_req;
2706 unsigned long lock_flags;
2709 /* setup new FSF request */
2710 retval = zfcp_fsf_req_create(erp_action->adapter,
2711 FSF_QTCB_CLOSE_PHYSICAL_PORT,
2712 ZFCP_WAIT_FOR_SBAL | ZFCP_REQ_AUTO_CLEANUP,
2713 erp_action->adapter->pool.fsf_req_erp,
2714 &lock_flags, &fsf_req);
2716 ZFCP_LOG_INFO("error: Could not create close physical port "
2717 "request (adapter %s, port 0x%016Lx)\n",
2718 zfcp_get_busid_by_adapter(erp_action->adapter),
2719 erp_action->port->wwpn);
2724 sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
2725 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
2726 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
2728 /* mark port as being closed */
2729 atomic_set_mask(ZFCP_STATUS_PORT_PHYS_CLOSING,
2730 &erp_action->port->status);
2731 /* save a pointer to this port */
2732 fsf_req->data = (unsigned long) erp_action->port;
2733 fsf_req->qtcb->header.port_handle = erp_action->port->handle;
2734 fsf_req->erp_action = erp_action;
2735 erp_action->fsf_req = fsf_req;
2737 zfcp_erp_start_timer(fsf_req);
2738 retval = zfcp_fsf_req_send(fsf_req);
2740 ZFCP_LOG_INFO("error: Could not send close physical port "
2741 "request (adapter %s, port 0x%016Lx)\n",
2742 zfcp_get_busid_by_adapter(erp_action->adapter),
2743 erp_action->port->wwpn);
2744 zfcp_fsf_req_free(fsf_req);
2745 erp_action->fsf_req = NULL;
2749 ZFCP_LOG_TRACE("close physical port request initiated "
2750 "(adapter %s, port 0x%016Lx)\n",
2751 zfcp_get_busid_by_adapter(erp_action->adapter),
2752 erp_action->port->wwpn);
2754 write_unlock_irqrestore(&erp_action->adapter->request_queue.queue_lock,
2760 * function: zfcp_fsf_close_physical_port_handler
2762 * purpose: is called for finished Close Physical Port FSF command
2767 zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *fsf_req)
2769 int retval = -EINVAL;
2770 struct zfcp_port *port;
2771 struct zfcp_unit *unit;
2772 struct fsf_qtcb_header *header;
2773 u16 subtable, rule, counter;
2775 port = (struct zfcp_port *) fsf_req->data;
2776 header = &fsf_req->qtcb->header;
2778 if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) {
2779 /* don't change port status in our bookkeeping */
2780 goto skip_fsfstatus;
2783 /* evaluate FSF status in QTCB */
2784 switch (header->fsf_status) {
2786 case FSF_PORT_HANDLE_NOT_VALID:
2787 ZFCP_LOG_INFO("Temporary port identifier 0x%x invalid"
2788 "(adapter %s, port 0x%016Lx). "
2789 "This may happen occasionally.\n",
2791 zfcp_get_busid_by_port(port),
2793 ZFCP_LOG_DEBUG("status qualifier:\n");
2794 ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG,
2795 (char *) &header->fsf_status_qual,
2796 sizeof (union fsf_status_qual));
2797 zfcp_erp_adapter_reopen(port->adapter, 0, 108, fsf_req);
2798 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2801 case FSF_ACCESS_DENIED:
2802 ZFCP_LOG_NORMAL("Access denied, cannot close "
2803 "physical port 0x%016Lx on adapter %s\n",
2804 port->wwpn, zfcp_get_busid_by_port(port));
2805 for (counter = 0; counter < 2; counter++) {
2806 subtable = header->fsf_status_qual.halfword[counter * 2];
2807 rule = header->fsf_status_qual.halfword[counter * 2 + 1];
2809 case FSF_SQ_CFDC_SUBTABLE_OS:
2810 case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN:
2811 case FSF_SQ_CFDC_SUBTABLE_PORT_DID:
2812 case FSF_SQ_CFDC_SUBTABLE_LUN:
2813 ZFCP_LOG_INFO("Access denied (%s rule %d)\n",
2814 zfcp_act_subtable_type[subtable], rule);
2818 zfcp_erp_port_access_denied(port, 58, fsf_req);
2819 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2822 case FSF_PORT_BOXED:
2823 ZFCP_LOG_DEBUG("The remote port 0x%016Lx on adapter "
2824 "%s needs to be reopened but it was attempted "
2825 "to close it physically.\n",
2827 zfcp_get_busid_by_port(port));
2828 zfcp_erp_port_boxed(port, 50, fsf_req);
2829 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR |
2830 ZFCP_STATUS_FSFREQ_RETRY;
2832 /* can't use generic zfcp_erp_modify_port_status because
2833 * ZFCP_STATUS_COMMON_OPEN must not be reset for the port */
2834 atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
2835 list_for_each_entry(unit, &port->unit_list_head, list)
2836 atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN,
2840 case FSF_ADAPTER_STATUS_AVAILABLE:
2841 switch (header->fsf_status_qual.word[0]) {
2842 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
2843 /* This will now be escalated by ERP */
2844 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2846 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
2847 /* ERP strategy will escalate */
2848 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2852 ("bug: Wrong status qualifier 0x%x arrived.\n",
2853 header->fsf_status_qual.word[0]);
2859 ZFCP_LOG_DEBUG("Remote port 0x%016Lx via adapter %s "
2860 "physically closed, port handle 0x%x\n",
2862 zfcp_get_busid_by_port(port), port->handle);
2863 /* can't use generic zfcp_erp_modify_port_status because
2864 * ZFCP_STATUS_COMMON_OPEN must not be reset for the port
2866 atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
2867 list_for_each_entry(unit, &port->unit_list_head, list)
2868 atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status);
2873 ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented "
2874 "(debug info 0x%x)\n",
2875 header->fsf_status);
2880 atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_CLOSING, &port->status);
2885 * function: zfcp_fsf_open_unit
2891 * assumptions: This routine does not check whether the associated
2892 * remote port has already been opened. This should be
2893 * done by calling routines. Otherwise some status
2894 * may be presented by FSF
2897 zfcp_fsf_open_unit(struct zfcp_erp_action *erp_action)
2899 volatile struct qdio_buffer_element *sbale;
2900 struct zfcp_fsf_req *fsf_req;
2901 unsigned long lock_flags;
2904 /* setup new FSF request */
2905 retval = zfcp_fsf_req_create(erp_action->adapter,
2907 ZFCP_WAIT_FOR_SBAL | ZFCP_REQ_AUTO_CLEANUP,
2908 erp_action->adapter->pool.fsf_req_erp,
2909 &lock_flags, &fsf_req);
2911 ZFCP_LOG_INFO("error: Could not create open unit request for "
2912 "unit 0x%016Lx on port 0x%016Lx on adapter %s.\n",
2913 erp_action->unit->fcp_lun,
2914 erp_action->unit->port->wwpn,
2915 zfcp_get_busid_by_adapter(erp_action->adapter));
2919 sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
2920 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
2921 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
2923 fsf_req->qtcb->header.port_handle = erp_action->port->handle;
2924 fsf_req->qtcb->bottom.support.fcp_lun = erp_action->unit->fcp_lun;
2925 if (!(erp_action->adapter->connection_features & FSF_FEATURE_NPIV_MODE))
2926 fsf_req->qtcb->bottom.support.option =
2927 FSF_OPEN_LUN_SUPPRESS_BOXING;
2928 atomic_set_mask(ZFCP_STATUS_COMMON_OPENING, &erp_action->unit->status);
2929 fsf_req->data = (unsigned long) erp_action->unit;
2930 fsf_req->erp_action = erp_action;
2931 erp_action->fsf_req = fsf_req;
2933 zfcp_erp_start_timer(fsf_req);
2934 retval = zfcp_fsf_req_send(erp_action->fsf_req);
2936 ZFCP_LOG_INFO("error: Could not send an open unit request "
2937 "on the adapter %s, port 0x%016Lx for "
2939 zfcp_get_busid_by_adapter(erp_action->adapter),
2940 erp_action->port->wwpn,
2941 erp_action->unit->fcp_lun);
2942 zfcp_fsf_req_free(fsf_req);
2943 erp_action->fsf_req = NULL;
2947 ZFCP_LOG_TRACE("Open LUN request initiated (adapter %s, "
2948 "port 0x%016Lx, unit 0x%016Lx)\n",
2949 zfcp_get_busid_by_adapter(erp_action->adapter),
2950 erp_action->port->wwpn, erp_action->unit->fcp_lun);
2952 write_unlock_irqrestore(&erp_action->adapter->request_queue.queue_lock,
2958 * function: zfcp_fsf_open_unit_handler
2960 * purpose: is called for finished Open LUN command
2965 zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *fsf_req)
2967 int retval = -EINVAL;
2968 struct zfcp_adapter *adapter;
2969 struct zfcp_unit *unit;
2970 struct fsf_qtcb_header *header;
2971 struct fsf_qtcb_bottom_support *bottom;
2972 struct fsf_queue_designator *queue_designator;
2973 u16 subtable, rule, counter;
2974 int exclusive, readwrite;
2976 unit = (struct zfcp_unit *) fsf_req->data;
2978 if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) {
2979 /* don't change unit status in our bookkeeping */
2980 goto skip_fsfstatus;
2983 adapter = fsf_req->adapter;
2984 header = &fsf_req->qtcb->header;
2985 bottom = &fsf_req->qtcb->bottom.support;
2986 queue_designator = &header->fsf_status_qual.fsf_queue_designator;
2988 atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED |
2989 ZFCP_STATUS_COMMON_ACCESS_BOXED |
2990 ZFCP_STATUS_UNIT_SHARED |
2991 ZFCP_STATUS_UNIT_READONLY,
2994 /* evaluate FSF status in QTCB */
2995 switch (header->fsf_status) {
2997 case FSF_PORT_HANDLE_NOT_VALID:
2998 ZFCP_LOG_INFO("Temporary port identifier 0x%x "
2999 "for port 0x%016Lx on adapter %s invalid "
3000 "This may happen occasionally\n",
3002 unit->port->wwpn, zfcp_get_busid_by_unit(unit));
3003 ZFCP_LOG_DEBUG("status qualifier:\n");
3004 ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG,
3005 (char *) &header->fsf_status_qual,
3006 sizeof (union fsf_status_qual));
3007 zfcp_erp_adapter_reopen(unit->port->adapter, 0, 109, fsf_req);
3008 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
3011 case FSF_LUN_ALREADY_OPEN:
3012 ZFCP_LOG_NORMAL("bug: Attempted to open unit 0x%016Lx on "
3013 "remote port 0x%016Lx on adapter %s twice.\n",
3015 unit->port->wwpn, zfcp_get_busid_by_unit(unit));
3016 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
3019 case FSF_ACCESS_DENIED:
3020 ZFCP_LOG_NORMAL("Access denied, cannot open unit 0x%016Lx on "
3021 "remote port 0x%016Lx on adapter %s\n",
3022 unit->fcp_lun, unit->port->wwpn,
3023 zfcp_get_busid_by_unit(unit));
3024 for (counter = 0; counter < 2; counter++) {
3025 subtable = header->fsf_status_qual.halfword[counter * 2];
3026 rule = header->fsf_status_qual.halfword[counter * 2 + 1];
3028 case FSF_SQ_CFDC_SUBTABLE_OS:
3029 case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN:
3030 case FSF_SQ_CFDC_SUBTABLE_PORT_DID:
3031 case FSF_SQ_CFDC_SUBTABLE_LUN:
3032 ZFCP_LOG_INFO("Access denied (%s rule %d)\n",
3033 zfcp_act_subtable_type[subtable], rule);
3037 zfcp_erp_unit_access_denied(unit, 59, fsf_req);
3038 atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED, &unit->status);
3039 atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status);
3040 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
3043 case FSF_PORT_BOXED:
3044 ZFCP_LOG_DEBUG("The remote port 0x%016Lx on adapter %s "
3045 "needs to be reopened\n",
3046 unit->port->wwpn, zfcp_get_busid_by_unit(unit));
3047 zfcp_erp_port_boxed(unit->port, 51, fsf_req);
3048 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR |
3049 ZFCP_STATUS_FSFREQ_RETRY;
3052 case FSF_LUN_SHARING_VIOLATION:
3053 if (header->fsf_status_qual.word[0] != 0) {
3054 ZFCP_LOG_NORMAL("FCP-LUN 0x%Lx at the remote port "
3056 "connected to the adapter %s "
3057 "is already in use in LPAR%d, CSS%d\n",
3060 zfcp_get_busid_by_unit(unit),
3061 queue_designator->hla,
3062 queue_designator->cssid);
3064 subtable = header->fsf_status_qual.halfword[4];
3065 rule = header->fsf_status_qual.halfword[5];
3067 case FSF_SQ_CFDC_SUBTABLE_OS:
3068 case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN:
3069 case FSF_SQ_CFDC_SUBTABLE_PORT_DID:
3070 case FSF_SQ_CFDC_SUBTABLE_LUN:
3071 ZFCP_LOG_NORMAL("Access to FCP-LUN 0x%Lx at the "
3072 "remote port with WWPN 0x%Lx "
3073 "connected to the adapter %s "
3074 "is denied (%s rule %d)\n",
3077 zfcp_get_busid_by_unit(unit),
3078 zfcp_act_subtable_type[subtable],
3083 ZFCP_LOG_DEBUG("status qualifier:\n");
3084 ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG,
3085 (char *) &header->fsf_status_qual,
3086 sizeof (union fsf_status_qual));
3087 zfcp_erp_unit_access_denied(unit, 60, fsf_req);
3088 atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED, &unit->status);
3089 atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status);
3090 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
3093 case FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED:
3094 ZFCP_LOG_INFO("error: The adapter ran out of resources. "
3095 "There is no handle (temporary port identifier) "
3096 "available for unit 0x%016Lx on port 0x%016Lx "
3100 zfcp_get_busid_by_unit(unit));
3101 zfcp_erp_unit_failed(unit, 34, fsf_req);
3102 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
3105 case FSF_ADAPTER_STATUS_AVAILABLE:
3106 switch (header->fsf_status_qual.word[0]) {
3107 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
3108 /* Re-establish link to port */
3109 zfcp_test_link(unit->port);
3110 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
3112 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
3113 /* ERP strategy will escalate */
3114 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
3118 ("bug: Wrong status qualifier 0x%x arrived.\n",
3119 header->fsf_status_qual.word[0]);
3123 case FSF_INVALID_COMMAND_OPTION:
3125 "Invalid option 0x%x has been specified "
3126 "in QTCB bottom sent to the adapter %s\n",
3128 zfcp_get_busid_by_adapter(adapter));
3129 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
3134 /* save LUN handle assigned by FSF */
3135 unit->handle = header->lun_handle;
3136 ZFCP_LOG_TRACE("unit 0x%016Lx on remote port 0x%016Lx on "
3137 "adapter %s opened, port handle 0x%x\n",
3140 zfcp_get_busid_by_unit(unit),
3142 /* mark unit as open */
3143 atomic_set_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status);
3145 if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE) &&
3146 (adapter->adapter_features & FSF_FEATURE_LUN_SHARING) &&
3147 (adapter->ccw_device->id.dev_model != ZFCP_DEVICE_MODEL_PRIV)) {
3148 exclusive = (bottom->lun_access_info &
3149 FSF_UNIT_ACCESS_EXCLUSIVE);
3150 readwrite = (bottom->lun_access_info &
3151 FSF_UNIT_ACCESS_OUTBOUND_TRANSFER);
3154 atomic_set_mask(ZFCP_STATUS_UNIT_SHARED,
3158 atomic_set_mask(ZFCP_STATUS_UNIT_READONLY,
3160 ZFCP_LOG_NORMAL("read-only access for unit "
3161 "(adapter %s, wwpn=0x%016Lx, "
3162 "fcp_lun=0x%016Lx)\n",
3163 zfcp_get_busid_by_unit(unit),
3168 if (exclusive && !readwrite) {
3169 ZFCP_LOG_NORMAL("exclusive access of read-only "
3170 "unit not supported\n");
3171 zfcp_erp_unit_failed(unit, 35, fsf_req);
3172 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
3173 zfcp_erp_unit_shutdown(unit, 0, 80, fsf_req);
3174 } else if (!exclusive && readwrite) {
3175 ZFCP_LOG_NORMAL("shared access of read-write "
3176 "unit not supported\n");
3177 zfcp_erp_unit_failed(unit, 36, fsf_req);
3178 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
3179 zfcp_erp_unit_shutdown(unit, 0, 81, fsf_req);
3187 ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented "
3188 "(debug info 0x%x)\n",
3189 header->fsf_status);
3194 atomic_clear_mask(ZFCP_STATUS_COMMON_OPENING, &unit->status);
3199 * function: zfcp_fsf_close_unit
3203 * returns: address of fsf_req - request successfully initiated
3206 * assumptions: This routine does not check whether the associated
3207 * remote port/lun has already been opened. This should be
3208 * done by calling routines. Otherwise some status
3209 * may be presented by FSF
3212 zfcp_fsf_close_unit(struct zfcp_erp_action *erp_action)
3214 volatile struct qdio_buffer_element *sbale;
3215 struct zfcp_fsf_req *fsf_req;
3216 unsigned long lock_flags;
3219 /* setup new FSF request */
3220 retval = zfcp_fsf_req_create(erp_action->adapter,
3222 ZFCP_WAIT_FOR_SBAL | ZFCP_REQ_AUTO_CLEANUP,
3223 erp_action->adapter->pool.fsf_req_erp,
3224 &lock_flags, &fsf_req);
3226 ZFCP_LOG_INFO("error: Could not create close unit request for "
3227 "unit 0x%016Lx on port 0x%016Lx on adapter %s.\n",
3228 erp_action->unit->fcp_lun,
3229 erp_action->port->wwpn,
3230 zfcp_get_busid_by_adapter(erp_action->adapter));
3234 sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
3235 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
3236 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
3238 fsf_req->qtcb->header.port_handle = erp_action->port->handle;
3239 fsf_req->qtcb->header.lun_handle = erp_action->unit->handle;
3240 atomic_set_mask(ZFCP_STATUS_COMMON_CLOSING, &erp_action->unit->status);
3241 fsf_req->data = (unsigned long) erp_action->unit;
3242 fsf_req->erp_action = erp_action;
3243 erp_action->fsf_req = fsf_req;
3245 zfcp_erp_start_timer(fsf_req);
3246 retval = zfcp_fsf_req_send(erp_action->fsf_req);
3248 ZFCP_LOG_INFO("error: Could not send a close unit request for "
3249 "unit 0x%016Lx on port 0x%016Lx onadapter %s.\n",
3250 erp_action->unit->fcp_lun,
3251 erp_action->port->wwpn,
3252 zfcp_get_busid_by_adapter(erp_action->adapter));
3253 zfcp_fsf_req_free(fsf_req);
3254 erp_action->fsf_req = NULL;
3258 ZFCP_LOG_TRACE("Close LUN request initiated (adapter %s, "
3259 "port 0x%016Lx, unit 0x%016Lx)\n",
3260 zfcp_get_busid_by_adapter(erp_action->adapter),
3261 erp_action->port->wwpn, erp_action->unit->fcp_lun);
3263 write_unlock_irqrestore(&erp_action->adapter->request_queue.queue_lock,
3269 * function: zfcp_fsf_close_unit_handler
3271 * purpose: is called for finished Close LUN FSF command
3276 zfcp_fsf_close_unit_handler(struct zfcp_fsf_req *fsf_req)
3278 int retval = -EINVAL;
3279 struct zfcp_unit *unit;
3281 unit = (struct zfcp_unit *) fsf_req->data;
3283 if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) {
3284 /* don't change unit status in our bookkeeping */
3285 goto skip_fsfstatus;
3288 /* evaluate FSF status in QTCB */
3289 switch (fsf_req->qtcb->header.fsf_status) {
3291 case FSF_PORT_HANDLE_NOT_VALID:
3292 ZFCP_LOG_INFO("Temporary port identifier 0x%x for port "
3293 "0x%016Lx on adapter %s invalid. This may "
3294 "happen in rare circumstances\n",
3297 zfcp_get_busid_by_unit(unit));
3298 ZFCP_LOG_DEBUG("status qualifier:\n");
3299 ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG,
3300 (char *) &fsf_req->qtcb->header.fsf_status_qual,
3301 sizeof (union fsf_status_qual));
3302 zfcp_erp_adapter_reopen(unit->port->adapter, 0, 110, fsf_req);
3303 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
3306 case FSF_LUN_HANDLE_NOT_VALID:
3307 ZFCP_LOG_INFO("Temporary LUN identifier 0x%x of unit "
3308 "0x%016Lx on port 0x%016Lx on adapter %s is "
3309 "invalid. This may happen occasionally.\n",
3313 zfcp_get_busid_by_unit(unit));
3314 ZFCP_LOG_DEBUG("Status qualifier data:\n");
3315 ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG,
3316 (char *) &fsf_req->qtcb->header.fsf_status_qual,
3317 sizeof (union fsf_status_qual));
3318 zfcp_erp_port_reopen(unit->port, 0, 111, fsf_req);
3319 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
3322 case FSF_PORT_BOXED:
3323 ZFCP_LOG_DEBUG("The remote port 0x%016Lx on adapter %s "
3324 "needs to be reopened\n",
3326 zfcp_get_busid_by_unit(unit));
3327 zfcp_erp_port_boxed(unit->port, 52, fsf_req);
3328 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR |
3329 ZFCP_STATUS_FSFREQ_RETRY;
3332 case FSF_ADAPTER_STATUS_AVAILABLE:
3333 switch (fsf_req->qtcb->header.fsf_status_qual.word[0]) {
3334 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
3335 /* re-establish link to port */
3336 zfcp_test_link(unit->port);
3337 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
3339 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
3340 /* ERP strategy will escalate */
3341 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
3345 ("bug: Wrong status qualifier 0x%x arrived.\n",
3346 fsf_req->qtcb->header.fsf_status_qual.word[0]);
3352 ZFCP_LOG_TRACE("unit 0x%016Lx on port 0x%016Lx on adapter %s "
3353 "closed, port handle 0x%x\n",
3356 zfcp_get_busid_by_unit(unit),
3358 /* mark unit as closed */
3359 atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status);
3364 ZFCP_LOG_NORMAL("bug: An unknown FSF Status was presented "
3365 "(debug info 0x%x)\n",
3366 fsf_req->qtcb->header.fsf_status);
3371 atomic_clear_mask(ZFCP_STATUS_COMMON_CLOSING, &unit->status);
3376 * zfcp_fsf_send_fcp_command_task - initiate an FCP command (for a SCSI command)
3377 * @adapter: adapter where scsi command is issued
3378 * @unit: unit where command is sent to
3379 * @scsi_cmnd: scsi command to be sent
3380 * @timer: timer to be started when request is initiated
3381 * @req_flags: flags for fsf_request
3384 zfcp_fsf_send_fcp_command_task(struct zfcp_adapter *adapter,
3385 struct zfcp_unit *unit,
3386 struct scsi_cmnd * scsi_cmnd,
3387 int use_timer, int req_flags)
3389 struct zfcp_fsf_req *fsf_req = NULL;
3390 struct fcp_cmnd_iu *fcp_cmnd_iu;
3391 unsigned int sbtype;
3392 unsigned long lock_flags;
3397 /* setup new FSF request */
3398 retval = zfcp_fsf_req_create(adapter, FSF_QTCB_FCP_CMND, req_flags,
3399 adapter->pool.fsf_req_scsi,
3400 &lock_flags, &fsf_req);
3401 if (unlikely(retval < 0)) {
3402 ZFCP_LOG_DEBUG("error: Could not create FCP command request "
3403 "for unit 0x%016Lx on port 0x%016Lx on "
3407 zfcp_get_busid_by_adapter(adapter));
3408 goto failed_req_create;
3411 if (unlikely(!atomic_test_mask(ZFCP_STATUS_COMMON_UNBLOCKED,
3417 zfcp_unit_get(unit);
3418 fsf_req->unit = unit;
3420 /* associate FSF request with SCSI request (for look up on abort) */
3421 scsi_cmnd->host_scribble = (unsigned char *) fsf_req->req_id;
3423 /* associate SCSI command with FSF request */
3424 fsf_req->data = (unsigned long) scsi_cmnd;
3426 /* set handles of unit and its parent port in QTCB */
3427 fsf_req->qtcb->header.lun_handle = unit->handle;
3428 fsf_req->qtcb->header.port_handle = unit->port->handle;
3430 /* FSF does not define the structure of the FCP_CMND IU */
3431 fcp_cmnd_iu = (struct fcp_cmnd_iu *)
3432 &(fsf_req->qtcb->bottom.io.fcp_cmnd);
3435 * set depending on data direction:
3436 * data direction bits in SBALE (SB Type)
3437 * data direction bits in QTCB
3438 * data direction bits in FCP_CMND IU
3440 switch (scsi_cmnd->sc_data_direction) {
3442 fsf_req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND;
3445 * what is the correct type for commands
3446 * without 'real' data buffers?
3448 sbtype = SBAL_FLAGS0_TYPE_READ;
3450 case DMA_FROM_DEVICE:
3451 fsf_req->qtcb->bottom.io.data_direction = FSF_DATADIR_READ;
3452 sbtype = SBAL_FLAGS0_TYPE_READ;
3453 fcp_cmnd_iu->rddata = 1;
3456 fsf_req->qtcb->bottom.io.data_direction = FSF_DATADIR_WRITE;
3457 sbtype = SBAL_FLAGS0_TYPE_WRITE;
3458 fcp_cmnd_iu->wddata = 1;
3460 case DMA_BIDIRECTIONAL:
3463 * dummy, catch this condition earlier
3464 * in zfcp_scsi_queuecommand
3466 goto failed_scsi_cmnd;
3469 /* set FC service class in QTCB (3 per default) */
3470 fsf_req->qtcb->bottom.io.service_class = ZFCP_FC_SERVICE_CLASS_DEFAULT;
3472 /* set FCP_LUN in FCP_CMND IU in QTCB */
3473 fcp_cmnd_iu->fcp_lun = unit->fcp_lun;
3475 mask = ZFCP_STATUS_UNIT_READONLY | ZFCP_STATUS_UNIT_SHARED;
3477 /* set task attributes in FCP_CMND IU in QTCB */
3478 if (likely((scsi_cmnd->device->simple_tags) ||
3479 (atomic_test_mask(mask, &unit->status))))
3480 fcp_cmnd_iu->task_attribute = SIMPLE_Q;
3482 fcp_cmnd_iu->task_attribute = UNTAGGED;
3484 /* set additional length of FCP_CDB in FCP_CMND IU in QTCB, if needed */
3485 if (unlikely(scsi_cmnd->cmd_len > FCP_CDB_LENGTH)) {
3486 fcp_cmnd_iu->add_fcp_cdb_length
3487 = (scsi_cmnd->cmd_len - FCP_CDB_LENGTH) >> 2;
3488 ZFCP_LOG_TRACE("SCSI CDB length is 0x%x, "
3489 "additional FCP_CDB length is 0x%x "
3490 "(shifted right 2 bits)\n",
3492 fcp_cmnd_iu->add_fcp_cdb_length);
3495 * copy SCSI CDB (including additional length, if any) to
3496 * FCP_CDB in FCP_CMND IU in QTCB
3498 memcpy(fcp_cmnd_iu->fcp_cdb, scsi_cmnd->cmnd, scsi_cmnd->cmd_len);
3500 /* FCP CMND IU length in QTCB */
3501 fsf_req->qtcb->bottom.io.fcp_cmnd_length =
3502 sizeof (struct fcp_cmnd_iu) +
3503 fcp_cmnd_iu->add_fcp_cdb_length + sizeof (fcp_dl_t);
3505 /* generate SBALEs from data buffer */
3506 real_bytes = zfcp_qdio_sbals_from_scsicmnd(fsf_req, sbtype, scsi_cmnd);
3507 if (unlikely(real_bytes < 0)) {
3508 if (fsf_req->sbal_number < ZFCP_MAX_SBALS_PER_REQ) {
3510 "Data did not fit into available buffer(s), "
3511 "waiting for more...\n");
3514 ZFCP_LOG_NORMAL("error: No truncation implemented but "
3515 "required. Shutting down unit "
3516 "(adapter %s, port 0x%016Lx, "
3518 zfcp_get_busid_by_unit(unit),
3521 zfcp_erp_unit_shutdown(unit, 0, 131, fsf_req);
3527 /* set length of FCP data length in FCP_CMND IU in QTCB */
3528 zfcp_set_fcp_dl(fcp_cmnd_iu, real_bytes);
3530 ZFCP_LOG_DEBUG("Sending SCSI command:\n");
3531 ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG,
3532 (char *) scsi_cmnd->cmnd, scsi_cmnd->cmd_len);
3535 zfcp_fsf_start_timer(fsf_req, ZFCP_FSF_REQUEST_TIMEOUT);
3537 retval = zfcp_fsf_req_send(fsf_req);
3538 if (unlikely(retval < 0)) {
3539 ZFCP_LOG_INFO("error: Could not send FCP command request "
3540 "on adapter %s, port 0x%016Lx, unit 0x%016Lx\n",
3541 zfcp_get_busid_by_adapter(adapter),
3547 ZFCP_LOG_TRACE("Send FCP Command initiated (adapter %s, "
3548 "port 0x%016Lx, unit 0x%016Lx)\n",
3549 zfcp_get_busid_by_adapter(adapter),
3557 zfcp_unit_put(unit);
3559 zfcp_fsf_req_free(fsf_req);
3561 scsi_cmnd->host_scribble = NULL;
3564 write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags);
3568 struct zfcp_fsf_req *
3569 zfcp_fsf_send_fcp_command_task_management(struct zfcp_adapter *adapter,
3570 struct zfcp_unit *unit,
3571 u8 tm_flags, int req_flags)
3573 struct zfcp_fsf_req *fsf_req = NULL;
3575 struct fcp_cmnd_iu *fcp_cmnd_iu;
3576 unsigned long lock_flags;
3577 volatile struct qdio_buffer_element *sbale;
3579 /* setup new FSF request */
3580 retval = zfcp_fsf_req_create(adapter, FSF_QTCB_FCP_CMND, req_flags,
3581 adapter->pool.fsf_req_scsi,
3582 &lock_flags, &fsf_req);
3584 ZFCP_LOG_INFO("error: Could not create FCP command (task "
3585 "management) request for adapter %s, port "
3586 " 0x%016Lx, unit 0x%016Lx.\n",
3587 zfcp_get_busid_by_adapter(adapter),
3588 unit->port->wwpn, unit->fcp_lun);
3592 if (unlikely(!atomic_test_mask(ZFCP_STATUS_COMMON_UNBLOCKED,
3597 * Used to decide on proper handler in the return path,
3598 * could be either zfcp_fsf_send_fcp_command_task_handler or
3599 * zfcp_fsf_send_fcp_command_task_management_handler */
3601 fsf_req->status |= ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT;
3604 * hold a pointer to the unit being target of this
3605 * task management request
3607 fsf_req->data = (unsigned long) unit;
3609 /* set FSF related fields in QTCB */
3610 fsf_req->qtcb->header.lun_handle = unit->handle;
3611 fsf_req->qtcb->header.port_handle = unit->port->handle;
3612 fsf_req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND;
3613 fsf_req->qtcb->bottom.io.service_class = ZFCP_FC_SERVICE_CLASS_DEFAULT;
3614 fsf_req->qtcb->bottom.io.fcp_cmnd_length =
3615 sizeof (struct fcp_cmnd_iu) + sizeof (fcp_dl_t);
3617 sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
3618 sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE;
3619 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
3621 /* set FCP related fields in FCP_CMND IU in QTCB */
3622 fcp_cmnd_iu = (struct fcp_cmnd_iu *)
3623 &(fsf_req->qtcb->bottom.io.fcp_cmnd);
3624 fcp_cmnd_iu->fcp_lun = unit->fcp_lun;
3625 fcp_cmnd_iu->task_management_flags = tm_flags;
3627 zfcp_fsf_start_timer(fsf_req, ZFCP_SCSI_ER_TIMEOUT);
3628 retval = zfcp_fsf_req_send(fsf_req);
3633 zfcp_fsf_req_free(fsf_req);
3637 write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags);
3641 static void zfcp_fsf_update_lat(struct fsf_latency_record *lat_rec, u32 lat)
3643 lat_rec->sum += lat;
3644 if (lat_rec->min > lat)
3646 if (lat_rec->max < lat)
3650 static void zfcp_fsf_req_latency(struct zfcp_fsf_req *fsf_req)
3652 struct fsf_qual_latency_info *lat_inf;
3653 struct latency_cont *lat;
3654 struct zfcp_unit *unit;
3655 unsigned long flags;
3657 lat_inf = &fsf_req->qtcb->prefix.prot_status_qual.latency_info;
3658 unit = fsf_req->unit;
3660 switch (fsf_req->qtcb->bottom.io.data_direction) {
3661 case FSF_DATADIR_READ:
3662 lat = &unit->latencies.read;
3664 case FSF_DATADIR_WRITE:
3665 lat = &unit->latencies.write;
3667 case FSF_DATADIR_CMND:
3668 lat = &unit->latencies.cmd;
3674 spin_lock_irqsave(&unit->latencies.lock, flags);
3675 zfcp_fsf_update_lat(&lat->channel, lat_inf->channel_lat);
3676 zfcp_fsf_update_lat(&lat->fabric, lat_inf->fabric_lat);
3678 spin_unlock_irqrestore(&unit->latencies.lock, flags);
3682 * function: zfcp_fsf_send_fcp_command_handler
3684 * purpose: is called for finished Send FCP Command
3689 zfcp_fsf_send_fcp_command_handler(struct zfcp_fsf_req *fsf_req)
3691 int retval = -EINVAL;
3692 struct zfcp_unit *unit;
3693 struct fsf_qtcb_header *header;
3694 u16 subtable, rule, counter;
3696 header = &fsf_req->qtcb->header;
3698 if (unlikely(fsf_req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT))
3699 unit = (struct zfcp_unit *) fsf_req->data;
3701 unit = fsf_req->unit;
3703 if (unlikely(fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR)) {
3704 /* go directly to calls of special handlers */
3705 goto skip_fsfstatus;
3708 /* evaluate FSF status in QTCB */
3709 switch (header->fsf_status) {
3711 case FSF_PORT_HANDLE_NOT_VALID:
3712 ZFCP_LOG_INFO("Temporary port identifier 0x%x for port "
3713 "0x%016Lx on adapter %s invalid\n",
3715 unit->port->wwpn, zfcp_get_busid_by_unit(unit));
3716 ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG,
3717 (char *) &header->fsf_status_qual,
3718 sizeof (union fsf_status_qual));
3719 zfcp_erp_adapter_reopen(unit->port->adapter, 0, 112, fsf_req);
3720 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
3723 case FSF_LUN_HANDLE_NOT_VALID:
3724 ZFCP_LOG_INFO("Temporary LUN identifier 0x%x for unit "
3725 "0x%016Lx on port 0x%016Lx on adapter %s is "
3726 "invalid. This may happen occasionally.\n",
3730 zfcp_get_busid_by_unit(unit));
3731 ZFCP_LOG_NORMAL("Status qualifier data:\n");
3732 ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_NORMAL,
3733 (char *) &header->fsf_status_qual,
3734 sizeof (union fsf_status_qual));
3735 zfcp_erp_port_reopen(unit->port, 0, 113, fsf_req);
3736 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
3739 case FSF_HANDLE_MISMATCH:
3740 ZFCP_LOG_NORMAL("bug: The port handle 0x%x has changed "
3741 "unexpectedly. (adapter %s, port 0x%016Lx, "
3744 zfcp_get_busid_by_unit(unit),
3747 ZFCP_LOG_NORMAL("status qualifier:\n");
3748 ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_NORMAL,
3749 (char *) &header->fsf_status_qual,
3750 sizeof (union fsf_status_qual));
3751 zfcp_erp_adapter_reopen(unit->port->adapter, 0, 114, fsf_req);
3752 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
3755 case FSF_SERVICE_CLASS_NOT_SUPPORTED:
3756 ZFCP_LOG_INFO("error: adapter %s does not support fc "
3758 zfcp_get_busid_by_unit(unit),
3759 ZFCP_FC_SERVICE_CLASS_DEFAULT);
3760 /* stop operation for this adapter */
3761 zfcp_erp_adapter_shutdown(unit->port->adapter, 0, 132, fsf_req);
3762 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
3765 case FSF_FCPLUN_NOT_VALID:
3766 ZFCP_LOG_NORMAL("bug: unit 0x%016Lx on port 0x%016Lx on "
3767 "adapter %s does not have correct unit "
3771 zfcp_get_busid_by_unit(unit),
3773 ZFCP_LOG_DEBUG("status qualifier:\n");
3774 ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG,
3775 (char *) &header->fsf_status_qual,
3776 sizeof (union fsf_status_qual));
3777 zfcp_erp_port_reopen(unit->port, 0, 115, fsf_req);
3778 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
3781 case FSF_ACCESS_DENIED:
3782 ZFCP_LOG_NORMAL("Access denied, cannot send FCP command to "
3783 "unit 0x%016Lx on port 0x%016Lx on "
3784 "adapter %s\n", unit->fcp_lun, unit->port->wwpn,
3785 zfcp_get_busid_by_unit(unit));
3786 for (counter = 0; counter < 2; counter++) {
3787 subtable = header->fsf_status_qual.halfword[counter * 2];
3788 rule = header->fsf_status_qual.halfword[counter * 2 + 1];
3790 case FSF_SQ_CFDC_SUBTABLE_OS:
3791 case FSF_SQ_CFDC_SUBTABLE_PORT_WWPN:
3792 case FSF_SQ_CFDC_SUBTABLE_PORT_DID:
3793 case FSF_SQ_CFDC_SUBTABLE_LUN:
3794 ZFCP_LOG_INFO("Access denied (%s rule %d)\n",
3795 zfcp_act_subtable_type[subtable], rule);
3799 zfcp_erp_unit_access_denied(unit, 61, fsf_req);
3800 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
3803 case FSF_DIRECTION_INDICATOR_NOT_VALID:
3804 ZFCP_LOG_INFO("bug: Invalid data direction given for unit "
3805 "0x%016Lx on port 0x%016Lx on adapter %s "
3806 "(debug info %d)\n",
3809 zfcp_get_busid_by_unit(unit),
3810 fsf_req->qtcb->bottom.io.data_direction);
3811 /* stop operation for this adapter */
3812 zfcp_erp_adapter_shutdown(unit->port->adapter, 0, 133, fsf_req);
3813 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
3816 case FSF_CMND_LENGTH_NOT_VALID:
3818 ("bug: An invalid control-data-block length field "
3819 "was found in a command for unit 0x%016Lx on port "
3820 "0x%016Lx on adapter %s " "(debug info %d)\n",
3821 unit->fcp_lun, unit->port->wwpn,
3822 zfcp_get_busid_by_unit(unit),
3823 fsf_req->qtcb->bottom.io.fcp_cmnd_length);
3824 /* stop operation for this adapter */
3825 zfcp_erp_adapter_shutdown(unit->port->adapter, 0, 134, fsf_req);
3826 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
3829 case FSF_PORT_BOXED:
3830 ZFCP_LOG_DEBUG("The remote port 0x%016Lx on adapter %s "
3831 "needs to be reopened\n",
3832 unit->port->wwpn, zfcp_get_busid_by_unit(unit));
3833 zfcp_erp_port_boxed(unit->port, 53, fsf_req);
3834 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR |
3835 ZFCP_STATUS_FSFREQ_RETRY;
3839 ZFCP_LOG_NORMAL("unit needs to be reopened (adapter %s, "
3840 "wwpn=0x%016Lx, fcp_lun=0x%016Lx)\n",
3841 zfcp_get_busid_by_unit(unit),
3842 unit->port->wwpn, unit->fcp_lun);
3843 zfcp_erp_unit_boxed(unit, 54, fsf_req);
3844 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR
3845 | ZFCP_STATUS_FSFREQ_RETRY;
3848 case FSF_ADAPTER_STATUS_AVAILABLE:
3849 switch (header->fsf_status_qual.word[0]) {
3850 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
3851 /* re-establish link to port */
3852 zfcp_test_link(unit->port);
3854 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
3855 /* FIXME(hw) need proper specs for proper action */
3856 /* let scsi stack deal with retries and escalation */
3860 ("Unknown status qualifier 0x%x arrived.\n",
3861 header->fsf_status_qual.word[0]);
3864 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
3870 case FSF_FCP_RSP_AVAILABLE:
3875 if (fsf_req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT) {
3877 zfcp_fsf_send_fcp_command_task_management_handler(fsf_req);
3879 retval = zfcp_fsf_send_fcp_command_task_handler(fsf_req);
3880 fsf_req->unit = NULL;
3881 zfcp_unit_put(unit);
3887 * function: zfcp_fsf_send_fcp_command_task_handler
3889 * purpose: evaluates FCP_RSP IU
3894 zfcp_fsf_send_fcp_command_task_handler(struct zfcp_fsf_req *fsf_req)
3897 struct scsi_cmnd *scpnt;
3898 struct fcp_rsp_iu *fcp_rsp_iu = (struct fcp_rsp_iu *)
3899 &(fsf_req->qtcb->bottom.io.fcp_rsp);
3900 struct fcp_cmnd_iu *fcp_cmnd_iu = (struct fcp_cmnd_iu *)
3901 &(fsf_req->qtcb->bottom.io.fcp_cmnd);
3903 char *fcp_rsp_info = zfcp_get_fcp_rsp_info_ptr(fcp_rsp_iu);
3904 unsigned long flags;
3905 struct zfcp_unit *unit = fsf_req->unit;
3907 read_lock_irqsave(&fsf_req->adapter->abort_lock, flags);
3908 scpnt = (struct scsi_cmnd *) fsf_req->data;
3909 if (unlikely(!scpnt)) {
3911 ("Command with fsf_req %p is not associated to "
3912 "a scsi command anymore. Aborted?\n", fsf_req);
3915 if (unlikely(fsf_req->status & ZFCP_STATUS_FSFREQ_ABORTED)) {
3916 /* FIXME: (design) mid-layer should handle DID_ABORT like
3917 * DID_SOFT_ERROR by retrying the request for devices
3918 * that allow retries.
3920 ZFCP_LOG_DEBUG("Setting DID_SOFT_ERROR and SUGGEST_RETRY\n");
3921 set_host_byte(&scpnt->result, DID_SOFT_ERROR);
3922 set_driver_byte(&scpnt->result, SUGGEST_RETRY);
3923 goto skip_fsfstatus;
3926 if (unlikely(fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR)) {
3927 ZFCP_LOG_DEBUG("Setting DID_ERROR\n");
3928 set_host_byte(&scpnt->result, DID_ERROR);
3929 goto skip_fsfstatus;
3932 /* set message byte of result in SCSI command */
3933 scpnt->result |= COMMAND_COMPLETE << 8;
3936 * copy SCSI status code of FCP_STATUS of FCP_RSP IU to status byte
3937 * of result in SCSI command
3939 scpnt->result |= fcp_rsp_iu->scsi_status;
3940 if (unlikely(fcp_rsp_iu->scsi_status)) {
3942 ZFCP_LOG_DEBUG("status for SCSI Command:\n");
3943 ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG,
3944 scpnt->cmnd, scpnt->cmd_len);
3945 ZFCP_LOG_DEBUG("SCSI status code 0x%x\n",
3946 fcp_rsp_iu->scsi_status);
3947 ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG,
3948 (void *) fcp_rsp_iu, sizeof (struct fcp_rsp_iu));
3949 ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG,
3950 zfcp_get_fcp_sns_info_ptr(fcp_rsp_iu),
3951 fcp_rsp_iu->fcp_sns_len);
3954 if (fsf_req->adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA)
3955 zfcp_fsf_req_latency(fsf_req);
3957 /* check FCP_RSP_INFO */
3958 if (unlikely(fcp_rsp_iu->validity.bits.fcp_rsp_len_valid)) {
3959 ZFCP_LOG_DEBUG("rsp_len is valid\n");
3960 switch (fcp_rsp_info[3]) {
3963 ZFCP_LOG_TRACE("no failure or Task Management "
3964 "Function complete\n");
3965 set_host_byte(&scpnt->result, DID_OK);
3967 case RSP_CODE_LENGTH_MISMATCH:
3969 ZFCP_LOG_NORMAL("bug: FCP response code indictates "
3970 "that the fibrechannel protocol data "
3971 "length differs from the burst length. "
3972 "The problem occured on unit 0x%016Lx "
3973 "on port 0x%016Lx on adapter %s",
3976 zfcp_get_busid_by_unit(unit));
3977 /* dump SCSI CDB as prepared by zfcp */
3978 ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG,
3979 (char *) &fsf_req->qtcb->
3980 bottom.io.fcp_cmnd, FSF_FCP_CMND_SIZE);
3981 set_host_byte(&scpnt->result, DID_ERROR);
3982 goto skip_fsfstatus;
3983 case RSP_CODE_FIELD_INVALID:
3984 /* driver or hardware bug */
3985 ZFCP_LOG_NORMAL("bug: FCP response code indictates "
3986 "that the fibrechannel protocol data "
3987 "fields were incorrectly set up. "
3988 "The problem occured on the unit "
3989 "0x%016Lx on port 0x%016Lx on "
3993 zfcp_get_busid_by_unit(unit));
3994 /* dump SCSI CDB as prepared by zfcp */
3995 ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG,
3996 (char *) &fsf_req->qtcb->
3997 bottom.io.fcp_cmnd, FSF_FCP_CMND_SIZE);
3998 set_host_byte(&scpnt->result, DID_ERROR);
3999 goto skip_fsfstatus;
4000 case RSP_CODE_RO_MISMATCH:
4002 ZFCP_LOG_NORMAL("bug: The FCP response code indicates "
4003 "that conflicting values for the "
4004 "fibrechannel payload offset from the "
4005 "header were found. "
4006 "The problem occured on unit 0x%016Lx "
4007 "on port 0x%016Lx on adapter %s.\n",
4010 zfcp_get_busid_by_unit(unit));
4011 /* dump SCSI CDB as prepared by zfcp */
4012 ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG,
4013 (char *) &fsf_req->qtcb->
4014 bottom.io.fcp_cmnd, FSF_FCP_CMND_SIZE);
4015 set_host_byte(&scpnt->result, DID_ERROR);
4016 goto skip_fsfstatus;
4018 ZFCP_LOG_NORMAL("bug: An invalid FCP response "
4019 "code was detected for a command. "
4020 "The problem occured on the unit "
4021 "0x%016Lx on port 0x%016Lx on "
4022 "adapter %s (debug info 0x%x)\n",
4025 zfcp_get_busid_by_unit(unit),
4027 /* dump SCSI CDB as prepared by zfcp */
4028 ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_DEBUG,
4029 (char *) &fsf_req->qtcb->
4030 bottom.io.fcp_cmnd, FSF_FCP_CMND_SIZE);
4031 set_host_byte(&scpnt->result, DID_ERROR);
4032 goto skip_fsfstatus;
4036 /* check for sense data */
4037 if (unlikely(fcp_rsp_iu->validity.bits.fcp_sns_len_valid)) {
4038 sns_len = FSF_FCP_RSP_SIZE -
4039 sizeof (struct fcp_rsp_iu) + fcp_rsp_iu->fcp_rsp_len;
4040 ZFCP_LOG_TRACE("room for %i bytes sense data in QTCB\n",
4042 sns_len = min(sns_len, (u32) SCSI_SENSE_BUFFERSIZE);
4043 ZFCP_LOG_TRACE("room for %i bytes sense data in SCSI command\n",
4044 SCSI_SENSE_BUFFERSIZE);
4045 sns_len = min(sns_len, fcp_rsp_iu->fcp_sns_len);
4046 ZFCP_LOG_TRACE("scpnt->result =0x%x, command was:\n",
4048 ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_TRACE,
4049 scpnt->cmnd, scpnt->cmd_len);
4051 ZFCP_LOG_TRACE("%i bytes sense data provided by FCP\n",
4052 fcp_rsp_iu->fcp_sns_len);
4053 memcpy(scpnt->sense_buffer,
4054 zfcp_get_fcp_sns_info_ptr(fcp_rsp_iu), sns_len);
4055 ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_TRACE,
4056 (void *)scpnt->sense_buffer, sns_len);
4059 /* check for overrun */
4060 if (unlikely(fcp_rsp_iu->validity.bits.fcp_resid_over)) {
4061 ZFCP_LOG_INFO("A data overrun was detected for a command. "
4062 "unit 0x%016Lx, port 0x%016Lx, adapter %s. "
4063 "The response data length is "
4064 "%d, the original length was %d.\n",
4067 zfcp_get_busid_by_unit(unit),
4068 fcp_rsp_iu->fcp_resid,
4069 (int) zfcp_get_fcp_dl(fcp_cmnd_iu));
4072 /* check for underrun */
4073 if (unlikely(fcp_rsp_iu->validity.bits.fcp_resid_under)) {
4074 ZFCP_LOG_INFO("A data underrun was detected for a command. "
4075 "unit 0x%016Lx, port 0x%016Lx, adapter %s. "
4076 "The response data length is "
4077 "%d, the original length was %d.\n",
4080 zfcp_get_busid_by_unit(unit),
4081 fcp_rsp_iu->fcp_resid,
4082 (int) zfcp_get_fcp_dl(fcp_cmnd_iu));
4084 scsi_set_resid(scpnt, fcp_rsp_iu->fcp_resid);
4085 if (scsi_bufflen(scpnt) - scsi_get_resid(scpnt) <
4087 set_host_byte(&scpnt->result, DID_ERROR);
4091 ZFCP_LOG_DEBUG("scpnt->result =0x%x\n", scpnt->result);
4093 if (scpnt->result != 0)
4094 zfcp_scsi_dbf_event_result("erro", 3, fsf_req->adapter, scpnt, fsf_req);
4095 else if (scpnt->retries > 0)
4096 zfcp_scsi_dbf_event_result("retr", 4, fsf_req->adapter, scpnt, fsf_req);
4098 zfcp_scsi_dbf_event_result("norm", 6, fsf_req->adapter, scpnt, fsf_req);
4100 /* cleanup pointer (need this especially for abort) */
4101 scpnt->host_scribble = NULL;
4103 /* always call back */
4104 (scpnt->scsi_done) (scpnt);
4107 * We must hold this lock until scsi_done has been called.
4108 * Otherwise we may call scsi_done after abort regarding this
4109 * command has completed.
4110 * Note: scsi_done must not block!
4113 read_unlock_irqrestore(&fsf_req->adapter->abort_lock, flags);
4118 * function: zfcp_fsf_send_fcp_command_task_management_handler
4120 * purpose: evaluates FCP_RSP IU
4125 zfcp_fsf_send_fcp_command_task_management_handler(struct zfcp_fsf_req *fsf_req)
4128 struct fcp_rsp_iu *fcp_rsp_iu = (struct fcp_rsp_iu *)
4129 &(fsf_req->qtcb->bottom.io.fcp_rsp);
4130 char *fcp_rsp_info = zfcp_get_fcp_rsp_info_ptr(fcp_rsp_iu);
4131 struct zfcp_unit *unit = (struct zfcp_unit *) fsf_req->data;
4133 if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) {
4134 fsf_req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED;
4135 goto skip_fsfstatus;
4138 /* check FCP_RSP_INFO */
4139 switch (fcp_rsp_info[3]) {
4142 ZFCP_LOG_DEBUG("no failure or Task Management "
4143 "Function complete\n");
4145 case RSP_CODE_TASKMAN_UNSUPP:
4146 ZFCP_LOG_NORMAL("bug: A reuested task management function "
4147 "is not supported on the target device "
4148 "unit 0x%016Lx, port 0x%016Lx, adapter %s\n ",
4151 zfcp_get_busid_by_unit(unit));
4152 fsf_req->status |= ZFCP_STATUS_FSFREQ_TMFUNCNOTSUPP;
4154 case RSP_CODE_TASKMAN_FAILED:
4155 ZFCP_LOG_NORMAL("bug: A reuested task management function "
4156 "failed to complete successfully. "
4157 "unit 0x%016Lx, port 0x%016Lx, adapter %s.\n",
4160 zfcp_get_busid_by_unit(unit));
4161 fsf_req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED;
4164 ZFCP_LOG_NORMAL("bug: An invalid FCP response "
4165 "code was detected for a command. "
4166 "unit 0x%016Lx, port 0x%016Lx, adapter %s "
4167 "(debug info 0x%x)\n",
4170 zfcp_get_busid_by_unit(unit),
4172 fsf_req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED;
4181 * function: zfcp_fsf_control_file
4183 * purpose: Initiator of the control file upload/download FSF requests
4185 * returns: 0 - FSF request is successfuly created and queued
4186 * -EOPNOTSUPP - The FCP adapter does not have Control File support
4187 * -EINVAL - Invalid direction specified
4188 * -ENOMEM - Insufficient memory
4189 * -EPERM - Cannot create FSF request or place it in QDIO queue
4192 zfcp_fsf_control_file(struct zfcp_adapter *adapter,
4193 struct zfcp_fsf_req **fsf_req_ptr,
4196 struct zfcp_sg_list *sg_list)
4198 struct zfcp_fsf_req *fsf_req;
4199 struct fsf_qtcb_bottom_support *bottom;
4200 volatile struct qdio_buffer_element *sbale;
4201 unsigned long lock_flags;
4206 if (!(adapter->adapter_features & FSF_FEATURE_CFDC)) {
4207 ZFCP_LOG_INFO("cfdc not supported (adapter %s)\n",
4208 zfcp_get_busid_by_adapter(adapter));
4209 retval = -EOPNOTSUPP;
4213 switch (fsf_command) {
4215 case FSF_QTCB_DOWNLOAD_CONTROL_FILE:
4216 direction = SBAL_FLAGS0_TYPE_WRITE;
4217 if ((option != FSF_CFDC_OPTION_FULL_ACCESS) &&
4218 (option != FSF_CFDC_OPTION_RESTRICTED_ACCESS))
4219 req_flags = ZFCP_WAIT_FOR_SBAL;
4222 case FSF_QTCB_UPLOAD_CONTROL_FILE:
4223 direction = SBAL_FLAGS0_TYPE_READ;
4227 ZFCP_LOG_INFO("Invalid FSF command code 0x%08x\n", fsf_command);
4232 retval = zfcp_fsf_req_create(adapter, fsf_command, req_flags,
4233 NULL, &lock_flags, &fsf_req);
4235 ZFCP_LOG_INFO("error: Could not create FSF request for the "
4237 zfcp_get_busid_by_adapter(adapter));
4239 goto unlock_queue_lock;
4242 sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
4243 sbale[0].flags |= direction;
4245 bottom = &fsf_req->qtcb->bottom.support;
4246 bottom->operation_subtype = FSF_CFDC_OPERATION_SUBTYPE;
4247 bottom->option = option;
4249 if (sg_list->count > 0) {
4252 bytes = zfcp_qdio_sbals_from_sg(fsf_req, direction,
4253 sg_list->sg, sg_list->count,
4254 ZFCP_MAX_SBALS_PER_REQ);
4255 if (bytes != ZFCP_CFDC_MAX_CONTROL_FILE_SIZE) {
4257 "error: Could not create sufficient number of "
4258 "SBALS for an FSF request to the adapter %s\n",
4259 zfcp_get_busid_by_adapter(adapter));
4264 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
4266 zfcp_fsf_start_timer(fsf_req, ZFCP_FSF_REQUEST_TIMEOUT);
4267 retval = zfcp_fsf_req_send(fsf_req);
4269 ZFCP_LOG_INFO("initiation of cfdc up/download failed"
4271 zfcp_get_busid_by_adapter(adapter));
4275 write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags);
4277 ZFCP_LOG_NORMAL("Control file %s FSF request has been sent to the "
4279 fsf_command == FSF_QTCB_DOWNLOAD_CONTROL_FILE ?
4280 "download" : "upload",
4281 zfcp_get_busid_by_adapter(adapter));
4283 wait_event(fsf_req->completion_wq,
4284 fsf_req->status & ZFCP_STATUS_FSFREQ_COMPLETED);
4286 *fsf_req_ptr = fsf_req;
4290 zfcp_fsf_req_free(fsf_req);
4292 write_unlock_irqrestore(&adapter->request_queue.queue_lock, lock_flags);
4299 * function: zfcp_fsf_control_file_handler
4301 * purpose: Handler of the control file upload/download FSF requests
4303 * returns: 0 - FSF request successfuly processed
4304 * -EAGAIN - Operation has to be repeated because of a temporary problem
4305 * -EACCES - There is no permission to execute an operation
4306 * -EPERM - The control file is not in a right format
4307 * -EIO - There is a problem with the FCP adapter
4308 * -EINVAL - Invalid operation
4309 * -EFAULT - User space memory I/O operation fault
4312 zfcp_fsf_control_file_handler(struct zfcp_fsf_req *fsf_req)
4314 struct zfcp_adapter *adapter = fsf_req->adapter;
4315 struct fsf_qtcb_header *header = &fsf_req->qtcb->header;
4316 struct fsf_qtcb_bottom_support *bottom = &fsf_req->qtcb->bottom.support;
4319 if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR) {
4321 goto skip_fsfstatus;
4324 switch (header->fsf_status) {
4328 "The FSF request has been successfully completed "
4329 "on the adapter %s\n",
4330 zfcp_get_busid_by_adapter(adapter));
4333 case FSF_OPERATION_PARTIALLY_SUCCESSFUL:
4334 if (bottom->operation_subtype == FSF_CFDC_OPERATION_SUBTYPE) {
4335 switch (header->fsf_status_qual.word[0]) {
4337 case FSF_SQ_CFDC_HARDENED_ON_SE:
4339 "CFDC on the adapter %s has being "
4340 "hardened on primary and secondary SE\n",
4341 zfcp_get_busid_by_adapter(adapter));
4344 case FSF_SQ_CFDC_COULD_NOT_HARDEN_ON_SE:
4346 "CFDC of the adapter %s could not "
4347 "be saved on the SE\n",
4348 zfcp_get_busid_by_adapter(adapter));
4351 case FSF_SQ_CFDC_COULD_NOT_HARDEN_ON_SE2:
4353 "CFDC of the adapter %s could not "
4354 "be copied to the secondary SE\n",
4355 zfcp_get_busid_by_adapter(adapter));
4360 "CFDC could not be hardened "
4361 "on the adapter %s\n",
4362 zfcp_get_busid_by_adapter(adapter));
4365 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
4369 case FSF_AUTHORIZATION_FAILURE:
4371 "Adapter %s does not accept privileged commands\n",
4372 zfcp_get_busid_by_adapter(adapter));
4373 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
4377 case FSF_CFDC_ERROR_DETECTED:
4379 "Error at position %d in the CFDC, "
4380 "CFDC is discarded by the adapter %s\n",
4381 header->fsf_status_qual.word[0],
4382 zfcp_get_busid_by_adapter(adapter));
4383 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
4387 case FSF_CONTROL_FILE_UPDATE_ERROR:
4389 "Adapter %s cannot harden the control file, "
4390 "file is discarded\n",
4391 zfcp_get_busid_by_adapter(adapter));
4392 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
4396 case FSF_CONTROL_FILE_TOO_LARGE:
4398 "Control file is too large, file is discarded "
4399 "by the adapter %s\n",
4400 zfcp_get_busid_by_adapter(adapter));
4401 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
4405 case FSF_ACCESS_CONFLICT_DETECTED:
4406 if (bottom->operation_subtype == FSF_CFDC_OPERATION_SUBTYPE)
4408 "CFDC has been discarded by the adapter %s, "
4409 "because activation would impact "
4410 "%d active connection(s)\n",
4411 zfcp_get_busid_by_adapter(adapter),
4412 header->fsf_status_qual.word[0]);
4413 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
4417 case FSF_CONFLICTS_OVERRULED:
4418 if (bottom->operation_subtype == FSF_CFDC_OPERATION_SUBTYPE)
4420 "CFDC has been activated on the adapter %s, "
4421 "but activation has impacted "
4422 "%d active connection(s)\n",
4423 zfcp_get_busid_by_adapter(adapter),
4424 header->fsf_status_qual.word[0]);
4425 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
4429 case FSF_UNKNOWN_OP_SUBTYPE:
4430 ZFCP_LOG_NORMAL("unknown operation subtype (adapter: %s, "
4431 "op_subtype=0x%x)\n",
4432 zfcp_get_busid_by_adapter(adapter),
4433 bottom->operation_subtype);
4434 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
4438 case FSF_INVALID_COMMAND_OPTION:
4440 "Invalid option 0x%x has been specified "
4441 "in QTCB bottom sent to the adapter %s\n",
4443 zfcp_get_busid_by_adapter(adapter));
4444 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
4450 "bug: An unknown/unexpected FSF status 0x%08x "
4451 "was presented on the adapter %s\n",
4453 zfcp_get_busid_by_adapter(adapter));
4454 fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR;
4464 zfcp_fsf_req_sbal_check(unsigned long *flags,
4465 struct zfcp_qdio_queue *queue, int needed)
4467 write_lock_irqsave(&queue->queue_lock, *flags);
4468 if (likely(atomic_read(&queue->free_count) >= needed))
4470 write_unlock_irqrestore(&queue->queue_lock, *flags);
4475 * set qtcb pointer in fsf_req and initialize QTCB
4478 zfcp_fsf_req_qtcb_init(struct zfcp_fsf_req *fsf_req)
4480 if (likely(fsf_req->qtcb != NULL)) {
4481 fsf_req->qtcb->prefix.req_seq_no =
4482 fsf_req->adapter->fsf_req_seq_no;
4483 fsf_req->qtcb->prefix.req_id = fsf_req->req_id;
4484 fsf_req->qtcb->prefix.ulp_info = ZFCP_ULP_INFO_VERSION;
4485 fsf_req->qtcb->prefix.qtcb_type =
4486 fsf_qtcb_type[fsf_req->fsf_command];
4487 fsf_req->qtcb->prefix.qtcb_version = ZFCP_QTCB_VERSION;
4488 fsf_req->qtcb->header.req_handle = fsf_req->req_id;
4489 fsf_req->qtcb->header.fsf_command = fsf_req->fsf_command;
4494 * zfcp_fsf_req_sbal_get - try to get one SBAL in the request queue
4495 * @adapter: adapter for which request queue is examined
4496 * @req_flags: flags indicating whether to wait for needed SBAL or not
4497 * @lock_flags: lock_flags if queue_lock is taken
4498 * Return: 0 on success, otherwise -EIO, or -ERESTARTSYS
4499 * Locks: lock adapter->request_queue->queue_lock on success
4502 zfcp_fsf_req_sbal_get(struct zfcp_adapter *adapter, int req_flags,
4503 unsigned long *lock_flags)
4506 struct zfcp_qdio_queue *req_queue = &adapter->request_queue;
4508 if (unlikely(req_flags & ZFCP_WAIT_FOR_SBAL)) {
4509 ret = wait_event_interruptible_timeout(adapter->request_wq,
4510 zfcp_fsf_req_sbal_check(lock_flags, req_queue, 1),
4516 } else if (!zfcp_fsf_req_sbal_check(lock_flags, req_queue, 1))
4523 * function: zfcp_fsf_req_create
4525 * purpose: create an FSF request at the specified adapter and
4526 * setup common fields
4528 * returns: -ENOMEM if there was insufficient memory for a request
4529 * -EIO if no qdio buffers could be allocate to the request
4530 * -EINVAL/-EPERM on bug conditions in req_dequeue
4533 * note: The created request is returned by reference.
4535 * locks: lock of concerned request queue must not be held,
4536 * but is held on completion (write, irqsave)
4539 zfcp_fsf_req_create(struct zfcp_adapter *adapter, u32 fsf_cmd, int req_flags,
4540 mempool_t *pool, unsigned long *lock_flags,
4541 struct zfcp_fsf_req **fsf_req_p)
4543 volatile struct qdio_buffer_element *sbale;
4544 struct zfcp_fsf_req *fsf_req = NULL;
4546 struct zfcp_qdio_queue *req_queue = &adapter->request_queue;
4548 /* allocate new FSF request */
4549 fsf_req = zfcp_fsf_req_alloc(pool, req_flags);
4550 if (unlikely(NULL == fsf_req)) {
4551 ZFCP_LOG_DEBUG("error: Could not put an FSF request into "
4552 "the outbound (send) queue.\n");
4554 goto failed_fsf_req;
4557 fsf_req->adapter = adapter;
4558 fsf_req->fsf_command = fsf_cmd;
4559 INIT_LIST_HEAD(&fsf_req->list);
4560 init_timer(&fsf_req->timer);
4562 /* initialize waitqueue which may be used to wait on
4563 this request completion */
4564 init_waitqueue_head(&fsf_req->completion_wq);
4566 ret = zfcp_fsf_req_sbal_get(adapter, req_flags, lock_flags);
4570 /* this is serialized (we are holding req_queue-lock of adapter) */
4571 if (adapter->req_no == 0)
4573 fsf_req->req_id = adapter->req_no++;
4575 zfcp_fsf_req_qtcb_init(fsf_req);
4578 * We hold queue_lock here. Check if QDIOUP is set and let request fail
4579 * if it is not set (see also *_open_qdio and *_close_qdio).
4582 if (!atomic_test_mask(ZFCP_STATUS_ADAPTER_QDIOUP, &adapter->status)) {
4583 write_unlock_irqrestore(&req_queue->queue_lock, *lock_flags);
4588 if (fsf_req->qtcb) {
4589 fsf_req->seq_no = adapter->fsf_req_seq_no;
4590 fsf_req->qtcb->prefix.req_seq_no = adapter->fsf_req_seq_no;
4592 fsf_req->sbal_number = 1;
4593 fsf_req->sbal_first = req_queue->free_index;
4594 fsf_req->sbal_curr = req_queue->free_index;
4595 fsf_req->sbale_curr = 1;
4597 if (likely(req_flags & ZFCP_REQ_AUTO_CLEANUP)) {
4598 fsf_req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
4601 sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_curr, 0);
4603 /* setup common SBALE fields */
4604 sbale[0].addr = (void *) fsf_req->req_id;
4605 sbale[0].flags |= SBAL_FLAGS0_COMMAND;
4606 if (likely(fsf_req->qtcb != NULL)) {
4607 sbale[1].addr = (void *) fsf_req->qtcb;
4608 sbale[1].length = sizeof(struct fsf_qtcb);
4611 ZFCP_LOG_TRACE("got %i free BUFFERs starting at index %i\n",
4612 fsf_req->sbal_number, fsf_req->sbal_first);
4617 /* dequeue new FSF request previously enqueued */
4618 zfcp_fsf_req_free(fsf_req);
4622 write_lock_irqsave(&req_queue->queue_lock, *lock_flags);
4624 *fsf_req_p = fsf_req;
4629 * function: zfcp_fsf_req_send
4631 * purpose: start transfer of FSF request via QDIO
4633 * returns: 0 - request transfer succesfully started
4634 * !0 - start of request transfer failed
4636 static int zfcp_fsf_req_send(struct zfcp_fsf_req *fsf_req)
4638 struct zfcp_adapter *adapter;
4639 struct zfcp_qdio_queue *req_queue;
4640 volatile struct qdio_buffer_element *sbale;
4642 int new_distance_from_int;
4645 adapter = fsf_req->adapter;
4646 req_queue = &adapter->request_queue,
4649 /* FIXME(debug): remove it later */
4650 sbale = zfcp_qdio_sbale_req(fsf_req, fsf_req->sbal_first, 0);
4651 ZFCP_LOG_DEBUG("SBALE0 flags=0x%x\n", sbale[0].flags);
4652 ZFCP_LOG_TRACE("HEX DUMP OF SBALE1 PAYLOAD:\n");
4653 ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_TRACE, (char *) sbale[1].addr,
4656 /* put allocated FSF request into hash table */
4657 spin_lock(&adapter->req_list_lock);
4658 zfcp_reqlist_add(adapter, fsf_req);
4659 spin_unlock(&adapter->req_list_lock);
4661 inc_seq_no = (fsf_req->qtcb != NULL);
4663 ZFCP_LOG_TRACE("request queue of adapter %s: "
4664 "next free SBAL is %i, %i free SBALs\n",
4665 zfcp_get_busid_by_adapter(adapter),
4666 req_queue->free_index,
4667 atomic_read(&req_queue->free_count));
4669 ZFCP_LOG_DEBUG("calling do_QDIO adapter %s, flags=0x%x, queue_no=%i, "
4670 "index_in_queue=%i, count=%i, buffers=%p\n",
4671 zfcp_get_busid_by_adapter(adapter),
4672 QDIO_FLAG_SYNC_OUTPUT,
4673 0, fsf_req->sbal_first, fsf_req->sbal_number,
4674 &req_queue->buffer[fsf_req->sbal_first]);
4677 * adjust the number of free SBALs in request queue as well as
4678 * position of first one
4680 atomic_sub(fsf_req->sbal_number, &req_queue->free_count);
4681 ZFCP_LOG_TRACE("free_count=%d\n", atomic_read(&req_queue->free_count));
4682 req_queue->free_index += fsf_req->sbal_number; /* increase */
4683 req_queue->free_index %= QDIO_MAX_BUFFERS_PER_Q; /* wrap if needed */
4684 new_distance_from_int = zfcp_qdio_determine_pci(req_queue, fsf_req);
4686 fsf_req->issued = get_clock();
4688 retval = do_QDIO(adapter->ccw_device,
4689 QDIO_FLAG_SYNC_OUTPUT,
4690 0, fsf_req->sbal_first, fsf_req->sbal_number, NULL);
4692 if (unlikely(retval)) {
4693 /* Queues are down..... */
4695 del_timer(&fsf_req->timer);
4696 spin_lock(&adapter->req_list_lock);
4697 zfcp_reqlist_remove(adapter, fsf_req);
4698 spin_unlock(&adapter->req_list_lock);
4699 /* undo changes in request queue made for this request */
4700 zfcp_qdio_zero_sbals(req_queue->buffer,
4701 fsf_req->sbal_first, fsf_req->sbal_number);
4702 atomic_add(fsf_req->sbal_number, &req_queue->free_count);
4703 req_queue->free_index -= fsf_req->sbal_number;
4704 req_queue->free_index += QDIO_MAX_BUFFERS_PER_Q;
4705 req_queue->free_index %= QDIO_MAX_BUFFERS_PER_Q; /* wrap */
4706 zfcp_erp_adapter_reopen(adapter, 0, 116, fsf_req);
4708 req_queue->distance_from_int = new_distance_from_int;
4710 * increase FSF sequence counter -
4711 * this must only be done for request successfully enqueued to
4712 * QDIO this rejected requests may be cleaned up by calling
4713 * routines resulting in missing sequence counter values
4717 /* Don't increase for unsolicited status */
4719 adapter->fsf_req_seq_no++;
4721 /* count FSF requests pending */
4722 atomic_inc(&adapter->reqs_active);
4727 #undef ZFCP_LOG_AREA