4 * Implementation of FSF commands.
6 * Copyright IBM Corporation 2002, 2008
9 #include <linux/blktrace_api.h>
12 static void zfcp_fsf_request_timeout_handler(unsigned long data
)
14 struct zfcp_adapter
*adapter
= (struct zfcp_adapter
*) data
;
15 zfcp_erp_adapter_reopen(adapter
, ZFCP_STATUS_COMMON_ERP_FAILED
, 62,
19 static void zfcp_fsf_start_timer(struct zfcp_fsf_req
*fsf_req
,
20 unsigned long timeout
)
22 fsf_req
->timer
.function
= zfcp_fsf_request_timeout_handler
;
23 fsf_req
->timer
.data
= (unsigned long) fsf_req
->adapter
;
24 fsf_req
->timer
.expires
= jiffies
+ timeout
;
25 add_timer(&fsf_req
->timer
);
28 static void zfcp_fsf_start_erp_timer(struct zfcp_fsf_req
*fsf_req
)
30 BUG_ON(!fsf_req
->erp_action
);
31 fsf_req
->timer
.function
= zfcp_erp_timeout_handler
;
32 fsf_req
->timer
.data
= (unsigned long) fsf_req
->erp_action
;
33 fsf_req
->timer
.expires
= jiffies
+ 30 * HZ
;
34 add_timer(&fsf_req
->timer
);
37 /* association between FSF command and FSF QTCB type */
38 static u32 fsf_qtcb_type
[] = {
39 [FSF_QTCB_FCP_CMND
] = FSF_IO_COMMAND
,
40 [FSF_QTCB_ABORT_FCP_CMND
] = FSF_SUPPORT_COMMAND
,
41 [FSF_QTCB_OPEN_PORT_WITH_DID
] = FSF_SUPPORT_COMMAND
,
42 [FSF_QTCB_OPEN_LUN
] = FSF_SUPPORT_COMMAND
,
43 [FSF_QTCB_CLOSE_LUN
] = FSF_SUPPORT_COMMAND
,
44 [FSF_QTCB_CLOSE_PORT
] = FSF_SUPPORT_COMMAND
,
45 [FSF_QTCB_CLOSE_PHYSICAL_PORT
] = FSF_SUPPORT_COMMAND
,
46 [FSF_QTCB_SEND_ELS
] = FSF_SUPPORT_COMMAND
,
47 [FSF_QTCB_SEND_GENERIC
] = FSF_SUPPORT_COMMAND
,
48 [FSF_QTCB_EXCHANGE_CONFIG_DATA
] = FSF_CONFIG_COMMAND
,
49 [FSF_QTCB_EXCHANGE_PORT_DATA
] = FSF_PORT_COMMAND
,
50 [FSF_QTCB_DOWNLOAD_CONTROL_FILE
] = FSF_SUPPORT_COMMAND
,
51 [FSF_QTCB_UPLOAD_CONTROL_FILE
] = FSF_SUPPORT_COMMAND
54 static void zfcp_act_eval_err(struct zfcp_adapter
*adapter
, u32 table
)
56 u16 subtable
= table
>> 16;
57 u16 rule
= table
& 0xffff;
58 const char *act_type
[] = { "unknown", "OS", "WWPN", "DID", "LUN" };
60 if (subtable
&& subtable
< ARRAY_SIZE(act_type
))
61 dev_warn(&adapter
->ccw_device
->dev
,
62 "Access denied according to ACT rule type %s, "
63 "rule %d\n", act_type
[subtable
], rule
);
66 static void zfcp_fsf_access_denied_port(struct zfcp_fsf_req
*req
,
67 struct zfcp_port
*port
)
69 struct fsf_qtcb_header
*header
= &req
->qtcb
->header
;
70 dev_warn(&req
->adapter
->ccw_device
->dev
,
71 "Access denied to port 0x%016Lx\n",
72 (unsigned long long)port
->wwpn
);
73 zfcp_act_eval_err(req
->adapter
, header
->fsf_status_qual
.halfword
[0]);
74 zfcp_act_eval_err(req
->adapter
, header
->fsf_status_qual
.halfword
[1]);
75 zfcp_erp_port_access_denied(port
, 55, req
);
76 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
79 static void zfcp_fsf_access_denied_unit(struct zfcp_fsf_req
*req
,
80 struct zfcp_unit
*unit
)
82 struct fsf_qtcb_header
*header
= &req
->qtcb
->header
;
83 dev_warn(&req
->adapter
->ccw_device
->dev
,
84 "Access denied to unit 0x%016Lx on port 0x%016Lx\n",
85 (unsigned long long)unit
->fcp_lun
,
86 (unsigned long long)unit
->port
->wwpn
);
87 zfcp_act_eval_err(req
->adapter
, header
->fsf_status_qual
.halfword
[0]);
88 zfcp_act_eval_err(req
->adapter
, header
->fsf_status_qual
.halfword
[1]);
89 zfcp_erp_unit_access_denied(unit
, 59, req
);
90 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
93 static void zfcp_fsf_class_not_supp(struct zfcp_fsf_req
*req
)
95 dev_err(&req
->adapter
->ccw_device
->dev
, "FCP device not "
96 "operational because of an unsupported FC class\n");
97 zfcp_erp_adapter_shutdown(req
->adapter
, 0, 123, req
);
98 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
102 * zfcp_fsf_req_free - free memory used by fsf request
103 * @fsf_req: pointer to struct zfcp_fsf_req
105 void zfcp_fsf_req_free(struct zfcp_fsf_req
*req
)
107 if (likely(req
->pool
)) {
108 mempool_free(req
, req
->pool
);
113 kmem_cache_free(zfcp_data
.fsf_req_qtcb_cache
, req
);
119 * zfcp_fsf_req_dismiss_all - dismiss all fsf requests
120 * @adapter: pointer to struct zfcp_adapter
122 * Never ever call this without shutting down the adapter first.
123 * Otherwise the adapter would continue using and corrupting s390 storage.
124 * Included BUG_ON() call to ensure this is done.
125 * ERP is supposed to be the only user of this function.
127 void zfcp_fsf_req_dismiss_all(struct zfcp_adapter
*adapter
)
129 struct zfcp_fsf_req
*req
, *tmp
;
131 LIST_HEAD(remove_queue
);
134 BUG_ON(atomic_read(&adapter
->status
) & ZFCP_STATUS_ADAPTER_QDIOUP
);
135 spin_lock_irqsave(&adapter
->req_list_lock
, flags
);
136 for (i
= 0; i
< REQUEST_LIST_SIZE
; i
++)
137 list_splice_init(&adapter
->req_list
[i
], &remove_queue
);
138 spin_unlock_irqrestore(&adapter
->req_list_lock
, flags
);
140 list_for_each_entry_safe(req
, tmp
, &remove_queue
, list
) {
141 list_del(&req
->list
);
142 req
->status
|= ZFCP_STATUS_FSFREQ_DISMISSED
;
143 zfcp_fsf_req_complete(req
);
147 static void zfcp_fsf_status_read_port_closed(struct zfcp_fsf_req
*req
)
149 struct fsf_status_read_buffer
*sr_buf
= req
->data
;
150 struct zfcp_adapter
*adapter
= req
->adapter
;
151 struct zfcp_port
*port
;
152 int d_id
= sr_buf
->d_id
& ZFCP_DID_MASK
;
155 read_lock_irqsave(&zfcp_data
.config_lock
, flags
);
156 list_for_each_entry(port
, &adapter
->port_list_head
, list
)
157 if (port
->d_id
== d_id
) {
158 read_unlock_irqrestore(&zfcp_data
.config_lock
, flags
);
159 switch (sr_buf
->status_subtype
) {
160 case FSF_STATUS_READ_SUB_CLOSE_PHYS_PORT
:
161 zfcp_erp_port_reopen(port
, 0, 101, req
);
163 case FSF_STATUS_READ_SUB_ERROR_PORT
:
164 zfcp_erp_port_shutdown(port
, 0, 122, req
);
169 read_unlock_irqrestore(&zfcp_data
.config_lock
, flags
);
172 static void zfcp_fsf_link_down_info_eval(struct zfcp_fsf_req
*req
, u8 id
,
173 struct fsf_link_down_info
*link_down
)
175 struct zfcp_adapter
*adapter
= req
->adapter
;
177 if (atomic_read(&adapter
->status
) & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED
)
180 atomic_set_mask(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED
, &adapter
->status
);
185 switch (link_down
->error_code
) {
186 case FSF_PSQ_LINK_NO_LIGHT
:
187 dev_warn(&req
->adapter
->ccw_device
->dev
,
188 "There is no light signal from the local "
189 "fibre channel cable\n");
191 case FSF_PSQ_LINK_WRAP_PLUG
:
192 dev_warn(&req
->adapter
->ccw_device
->dev
,
193 "There is a wrap plug instead of a fibre "
196 case FSF_PSQ_LINK_NO_FCP
:
197 dev_warn(&req
->adapter
->ccw_device
->dev
,
198 "The adjacent fibre channel node does not "
201 case FSF_PSQ_LINK_FIRMWARE_UPDATE
:
202 dev_warn(&req
->adapter
->ccw_device
->dev
,
203 "The FCP device is suspended because of a "
204 "firmware update\n");
206 case FSF_PSQ_LINK_INVALID_WWPN
:
207 dev_warn(&req
->adapter
->ccw_device
->dev
,
208 "The FCP device detected a WWPN that is "
209 "duplicate or not valid\n");
211 case FSF_PSQ_LINK_NO_NPIV_SUPPORT
:
212 dev_warn(&req
->adapter
->ccw_device
->dev
,
213 "The fibre channel fabric does not support NPIV\n");
215 case FSF_PSQ_LINK_NO_FCP_RESOURCES
:
216 dev_warn(&req
->adapter
->ccw_device
->dev
,
217 "The FCP adapter cannot support more NPIV ports\n");
219 case FSF_PSQ_LINK_NO_FABRIC_RESOURCES
:
220 dev_warn(&req
->adapter
->ccw_device
->dev
,
221 "The adjacent switch cannot support "
222 "more NPIV ports\n");
224 case FSF_PSQ_LINK_FABRIC_LOGIN_UNABLE
:
225 dev_warn(&req
->adapter
->ccw_device
->dev
,
226 "The FCP adapter could not log in to the "
227 "fibre channel fabric\n");
229 case FSF_PSQ_LINK_WWPN_ASSIGNMENT_CORRUPTED
:
230 dev_warn(&req
->adapter
->ccw_device
->dev
,
231 "The WWPN assignment file on the FCP adapter "
232 "has been damaged\n");
234 case FSF_PSQ_LINK_MODE_TABLE_CURRUPTED
:
235 dev_warn(&req
->adapter
->ccw_device
->dev
,
236 "The mode table on the FCP adapter "
237 "has been damaged\n");
239 case FSF_PSQ_LINK_NO_WWPN_ASSIGNMENT
:
240 dev_warn(&req
->adapter
->ccw_device
->dev
,
241 "All NPIV ports on the FCP adapter have "
245 dev_warn(&req
->adapter
->ccw_device
->dev
,
246 "The link between the FCP adapter and "
247 "the FC fabric is down\n");
250 zfcp_erp_adapter_failed(adapter
, id
, req
);
253 static void zfcp_fsf_status_read_link_down(struct zfcp_fsf_req
*req
)
255 struct fsf_status_read_buffer
*sr_buf
= req
->data
;
256 struct fsf_link_down_info
*ldi
=
257 (struct fsf_link_down_info
*) &sr_buf
->payload
;
259 switch (sr_buf
->status_subtype
) {
260 case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK
:
261 zfcp_fsf_link_down_info_eval(req
, 38, ldi
);
263 case FSF_STATUS_READ_SUB_FDISC_FAILED
:
264 zfcp_fsf_link_down_info_eval(req
, 39, ldi
);
266 case FSF_STATUS_READ_SUB_FIRMWARE_UPDATE
:
267 zfcp_fsf_link_down_info_eval(req
, 40, NULL
);
271 static void zfcp_fsf_status_read_handler(struct zfcp_fsf_req
*req
)
273 struct zfcp_adapter
*adapter
= req
->adapter
;
274 struct fsf_status_read_buffer
*sr_buf
= req
->data
;
276 if (req
->status
& ZFCP_STATUS_FSFREQ_DISMISSED
) {
277 zfcp_hba_dbf_event_fsf_unsol("dism", adapter
, sr_buf
);
278 mempool_free(sr_buf
, adapter
->pool
.data_status_read
);
279 zfcp_fsf_req_free(req
);
283 zfcp_hba_dbf_event_fsf_unsol("read", adapter
, sr_buf
);
285 switch (sr_buf
->status_type
) {
286 case FSF_STATUS_READ_PORT_CLOSED
:
287 zfcp_fsf_status_read_port_closed(req
);
289 case FSF_STATUS_READ_INCOMING_ELS
:
290 zfcp_fc_incoming_els(req
);
292 case FSF_STATUS_READ_SENSE_DATA_AVAIL
:
294 case FSF_STATUS_READ_BIT_ERROR_THRESHOLD
:
295 dev_warn(&adapter
->ccw_device
->dev
,
296 "The error threshold for checksum statistics "
297 "has been exceeded\n");
298 zfcp_hba_dbf_event_berr(adapter
, req
);
300 case FSF_STATUS_READ_LINK_DOWN
:
301 zfcp_fsf_status_read_link_down(req
);
303 case FSF_STATUS_READ_LINK_UP
:
304 dev_info(&adapter
->ccw_device
->dev
,
305 "The local link has been restored\n");
306 /* All ports should be marked as ready to run again */
307 zfcp_erp_modify_adapter_status(adapter
, 30, NULL
,
308 ZFCP_STATUS_COMMON_RUNNING
,
310 zfcp_erp_adapter_reopen(adapter
,
311 ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED
|
312 ZFCP_STATUS_COMMON_ERP_FAILED
,
315 case FSF_STATUS_READ_NOTIFICATION_LOST
:
316 if (sr_buf
->status_subtype
& FSF_STATUS_READ_SUB_ACT_UPDATED
)
317 zfcp_erp_adapter_access_changed(adapter
, 135, req
);
318 if (sr_buf
->status_subtype
& FSF_STATUS_READ_SUB_INCOMING_ELS
)
319 schedule_work(&adapter
->scan_work
);
321 case FSF_STATUS_READ_CFDC_UPDATED
:
322 zfcp_erp_adapter_access_changed(adapter
, 136, req
);
324 case FSF_STATUS_READ_FEATURE_UPDATE_ALERT
:
325 adapter
->adapter_features
= sr_buf
->payload
.word
[0];
329 mempool_free(sr_buf
, adapter
->pool
.data_status_read
);
330 zfcp_fsf_req_free(req
);
332 atomic_inc(&adapter
->stat_miss
);
333 queue_work(zfcp_data
.work_queue
, &adapter
->stat_work
);
336 static void zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req
*req
)
338 switch (req
->qtcb
->header
.fsf_status_qual
.word
[0]) {
339 case FSF_SQ_FCP_RSP_AVAILABLE
:
340 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE
:
341 case FSF_SQ_NO_RETRY_POSSIBLE
:
342 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED
:
344 case FSF_SQ_COMMAND_ABORTED
:
345 req
->status
|= ZFCP_STATUS_FSFREQ_ABORTED
;
347 case FSF_SQ_NO_RECOM
:
348 dev_err(&req
->adapter
->ccw_device
->dev
,
349 "The FCP adapter reported a problem "
350 "that cannot be recovered\n");
351 zfcp_erp_adapter_shutdown(req
->adapter
, 0, 121, req
);
354 /* all non-return stats set FSFREQ_ERROR*/
355 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
358 static void zfcp_fsf_fsfstatus_eval(struct zfcp_fsf_req
*req
)
360 if (unlikely(req
->status
& ZFCP_STATUS_FSFREQ_ERROR
))
363 switch (req
->qtcb
->header
.fsf_status
) {
364 case FSF_UNKNOWN_COMMAND
:
365 dev_err(&req
->adapter
->ccw_device
->dev
,
366 "The FCP adapter does not recognize the command 0x%x\n",
367 req
->qtcb
->header
.fsf_command
);
368 zfcp_erp_adapter_shutdown(req
->adapter
, 0, 120, req
);
369 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
371 case FSF_ADAPTER_STATUS_AVAILABLE
:
372 zfcp_fsf_fsfstatus_qual_eval(req
);
377 static void zfcp_fsf_protstatus_eval(struct zfcp_fsf_req
*req
)
379 struct zfcp_adapter
*adapter
= req
->adapter
;
380 struct fsf_qtcb
*qtcb
= req
->qtcb
;
381 union fsf_prot_status_qual
*psq
= &qtcb
->prefix
.prot_status_qual
;
383 zfcp_hba_dbf_event_fsf_response(req
);
385 if (req
->status
& ZFCP_STATUS_FSFREQ_DISMISSED
) {
386 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
|
387 ZFCP_STATUS_FSFREQ_RETRY
; /* only for SCSI cmnds. */
391 switch (qtcb
->prefix
.prot_status
) {
393 case FSF_PROT_FSF_STATUS_PRESENTED
:
395 case FSF_PROT_QTCB_VERSION_ERROR
:
396 dev_err(&adapter
->ccw_device
->dev
,
397 "QTCB version 0x%x not supported by FCP adapter "
398 "(0x%x to 0x%x)\n", FSF_QTCB_CURRENT_VERSION
,
399 psq
->word
[0], psq
->word
[1]);
400 zfcp_erp_adapter_shutdown(adapter
, 0, 117, req
);
402 case FSF_PROT_ERROR_STATE
:
403 case FSF_PROT_SEQ_NUMB_ERROR
:
404 zfcp_erp_adapter_reopen(adapter
, 0, 98, req
);
405 req
->status
|= ZFCP_STATUS_FSFREQ_RETRY
;
407 case FSF_PROT_UNSUPP_QTCB_TYPE
:
408 dev_err(&adapter
->ccw_device
->dev
,
409 "The QTCB type is not supported by the FCP adapter\n");
410 zfcp_erp_adapter_shutdown(adapter
, 0, 118, req
);
412 case FSF_PROT_HOST_CONNECTION_INITIALIZING
:
413 atomic_set_mask(ZFCP_STATUS_ADAPTER_HOST_CON_INIT
,
416 case FSF_PROT_DUPLICATE_REQUEST_ID
:
417 dev_err(&adapter
->ccw_device
->dev
,
418 "0x%Lx is an ambiguous request identifier\n",
419 (unsigned long long)qtcb
->bottom
.support
.req_handle
);
420 zfcp_erp_adapter_shutdown(adapter
, 0, 78, req
);
422 case FSF_PROT_LINK_DOWN
:
423 zfcp_fsf_link_down_info_eval(req
, 37, &psq
->link_down_info
);
424 /* FIXME: reopening adapter now? better wait for link up */
425 zfcp_erp_adapter_reopen(adapter
, 0, 79, req
);
427 case FSF_PROT_REEST_QUEUE
:
428 /* All ports should be marked as ready to run again */
429 zfcp_erp_modify_adapter_status(adapter
, 28, NULL
,
430 ZFCP_STATUS_COMMON_RUNNING
,
432 zfcp_erp_adapter_reopen(adapter
,
433 ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED
|
434 ZFCP_STATUS_COMMON_ERP_FAILED
, 99, req
);
437 dev_err(&adapter
->ccw_device
->dev
,
438 "0x%x is not a valid transfer protocol status\n",
439 qtcb
->prefix
.prot_status
);
440 zfcp_erp_adapter_shutdown(adapter
, 0, 119, req
);
442 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
446 * zfcp_fsf_req_complete - process completion of a FSF request
447 * @fsf_req: The FSF request that has been completed.
449 * When a request has been completed either from the FCP adapter,
450 * or it has been dismissed due to a queue shutdown, this function
451 * is called to process the completion status and trigger further
452 * events related to the FSF request.
454 void zfcp_fsf_req_complete(struct zfcp_fsf_req
*req
)
456 if (unlikely(req
->fsf_command
== FSF_QTCB_UNSOLICITED_STATUS
)) {
457 zfcp_fsf_status_read_handler(req
);
461 del_timer(&req
->timer
);
462 zfcp_fsf_protstatus_eval(req
);
463 zfcp_fsf_fsfstatus_eval(req
);
467 zfcp_erp_notify(req
->erp_action
, 0);
468 req
->status
|= ZFCP_STATUS_FSFREQ_COMPLETED
;
470 if (likely(req
->status
& ZFCP_STATUS_FSFREQ_CLEANUP
))
471 zfcp_fsf_req_free(req
);
473 /* notify initiator waiting for the requests completion */
475 * FIXME: Race! We must not access fsf_req here as it might have been
476 * cleaned up already due to the set ZFCP_STATUS_FSFREQ_COMPLETED
477 * flag. It's an improbable case. But, we have the same paranoia for
478 * the cleanup flag already.
479 * Might better be handled using complete()?
480 * (setting the flag and doing wakeup ought to be atomic
481 * with regard to checking the flag as long as waitqueue is
482 * part of the to be released structure)
484 wake_up(&req
->completion_wq
);
487 static int zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req
*req
)
489 struct fsf_qtcb_bottom_config
*bottom
;
490 struct zfcp_adapter
*adapter
= req
->adapter
;
491 struct Scsi_Host
*shost
= adapter
->scsi_host
;
493 bottom
= &req
->qtcb
->bottom
.config
;
496 memcpy(req
->data
, bottom
, sizeof(*bottom
));
498 fc_host_node_name(shost
) = bottom
->nport_serv_param
.wwnn
;
499 fc_host_port_name(shost
) = bottom
->nport_serv_param
.wwpn
;
500 fc_host_port_id(shost
) = bottom
->s_id
& ZFCP_DID_MASK
;
501 fc_host_speed(shost
) = bottom
->fc_link_speed
;
502 fc_host_supported_classes(shost
) = FC_COS_CLASS2
| FC_COS_CLASS3
;
504 adapter
->hydra_version
= bottom
->adapter_type
;
505 adapter
->timer_ticks
= bottom
->timer_interval
;
507 if (fc_host_permanent_port_name(shost
) == -1)
508 fc_host_permanent_port_name(shost
) = fc_host_port_name(shost
);
510 switch (bottom
->fc_topology
) {
512 adapter
->peer_d_id
= bottom
->peer_d_id
& ZFCP_DID_MASK
;
513 adapter
->peer_wwpn
= bottom
->plogi_payload
.wwpn
;
514 adapter
->peer_wwnn
= bottom
->plogi_payload
.wwnn
;
515 fc_host_port_type(shost
) = FC_PORTTYPE_PTP
;
517 case FSF_TOPO_FABRIC
:
518 fc_host_port_type(shost
) = FC_PORTTYPE_NPORT
;
521 fc_host_port_type(shost
) = FC_PORTTYPE_NLPORT
;
523 dev_err(&adapter
->ccw_device
->dev
,
524 "Unknown or unsupported arbitrated loop "
525 "fibre channel topology detected\n");
526 zfcp_erp_adapter_shutdown(adapter
, 0, 127, req
);
533 static void zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req
*req
)
535 struct zfcp_adapter
*adapter
= req
->adapter
;
536 struct fsf_qtcb
*qtcb
= req
->qtcb
;
537 struct fsf_qtcb_bottom_config
*bottom
= &qtcb
->bottom
.config
;
538 struct Scsi_Host
*shost
= adapter
->scsi_host
;
540 if (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)
543 adapter
->fsf_lic_version
= bottom
->lic_version
;
544 adapter
->adapter_features
= bottom
->adapter_features
;
545 adapter
->connection_features
= bottom
->connection_features
;
546 adapter
->peer_wwpn
= 0;
547 adapter
->peer_wwnn
= 0;
548 adapter
->peer_d_id
= 0;
550 switch (qtcb
->header
.fsf_status
) {
552 if (zfcp_fsf_exchange_config_evaluate(req
))
555 if (bottom
->max_qtcb_size
< sizeof(struct fsf_qtcb
)) {
556 dev_err(&adapter
->ccw_device
->dev
,
557 "FCP adapter maximum QTCB size (%d bytes) "
559 bottom
->max_qtcb_size
);
560 zfcp_erp_adapter_shutdown(adapter
, 0, 129, req
);
563 atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK
,
566 case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE
:
567 fc_host_node_name(shost
) = 0;
568 fc_host_port_name(shost
) = 0;
569 fc_host_port_id(shost
) = 0;
570 fc_host_speed(shost
) = FC_PORTSPEED_UNKNOWN
;
571 fc_host_port_type(shost
) = FC_PORTTYPE_UNKNOWN
;
572 adapter
->hydra_version
= 0;
574 atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK
,
577 zfcp_fsf_link_down_info_eval(req
, 42,
578 &qtcb
->header
.fsf_status_qual
.link_down_info
);
581 zfcp_erp_adapter_shutdown(adapter
, 0, 130, req
);
585 if (adapter
->adapter_features
& FSF_FEATURE_HBAAPI_MANAGEMENT
) {
586 adapter
->hardware_version
= bottom
->hardware_version
;
587 memcpy(fc_host_serial_number(shost
), bottom
->serial_number
,
588 min(FC_SERIAL_NUMBER_SIZE
, 17));
589 EBCASC(fc_host_serial_number(shost
),
590 min(FC_SERIAL_NUMBER_SIZE
, 17));
593 if (FSF_QTCB_CURRENT_VERSION
< bottom
->low_qtcb_version
) {
594 dev_err(&adapter
->ccw_device
->dev
,
595 "The FCP adapter only supports newer "
596 "control block versions\n");
597 zfcp_erp_adapter_shutdown(adapter
, 0, 125, req
);
600 if (FSF_QTCB_CURRENT_VERSION
> bottom
->high_qtcb_version
) {
601 dev_err(&adapter
->ccw_device
->dev
,
602 "The FCP adapter only supports older "
603 "control block versions\n");
604 zfcp_erp_adapter_shutdown(adapter
, 0, 126, req
);
608 static void zfcp_fsf_exchange_port_evaluate(struct zfcp_fsf_req
*req
)
610 struct zfcp_adapter
*adapter
= req
->adapter
;
611 struct fsf_qtcb_bottom_port
*bottom
= &req
->qtcb
->bottom
.port
;
612 struct Scsi_Host
*shost
= adapter
->scsi_host
;
615 memcpy(req
->data
, bottom
, sizeof(*bottom
));
617 if (adapter
->connection_features
& FSF_FEATURE_NPIV_MODE
)
618 fc_host_permanent_port_name(shost
) = bottom
->wwpn
;
620 fc_host_permanent_port_name(shost
) = fc_host_port_name(shost
);
621 fc_host_maxframe_size(shost
) = bottom
->maximum_frame_size
;
622 fc_host_supported_speeds(shost
) = bottom
->supported_speed
;
625 static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req
*req
)
627 struct fsf_qtcb
*qtcb
= req
->qtcb
;
629 if (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)
632 switch (qtcb
->header
.fsf_status
) {
634 zfcp_fsf_exchange_port_evaluate(req
);
636 case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE
:
637 zfcp_fsf_exchange_port_evaluate(req
);
638 zfcp_fsf_link_down_info_eval(req
, 43,
639 &qtcb
->header
.fsf_status_qual
.link_down_info
);
644 static int zfcp_fsf_sbal_check(struct zfcp_adapter
*adapter
)
646 struct zfcp_qdio_queue
*req_q
= &adapter
->req_q
;
648 spin_lock_bh(&adapter
->req_q_lock
);
649 if (atomic_read(&req_q
->count
))
651 spin_unlock_bh(&adapter
->req_q_lock
);
655 static int zfcp_fsf_sbal_available(struct zfcp_adapter
*adapter
)
657 unsigned int count
= atomic_read(&adapter
->req_q
.count
);
659 atomic_inc(&adapter
->qdio_outb_full
);
663 static int zfcp_fsf_req_sbal_get(struct zfcp_adapter
*adapter
)
667 spin_unlock_bh(&adapter
->req_q_lock
);
668 ret
= wait_event_interruptible_timeout(adapter
->request_wq
,
669 zfcp_fsf_sbal_check(adapter
), 5 * HZ
);
673 atomic_inc(&adapter
->qdio_outb_full
);
675 spin_lock_bh(&adapter
->req_q_lock
);
679 static struct zfcp_fsf_req
*zfcp_fsf_alloc_noqtcb(mempool_t
*pool
)
681 struct zfcp_fsf_req
*req
;
682 req
= mempool_alloc(pool
, GFP_ATOMIC
);
685 memset(req
, 0, sizeof(*req
));
690 static struct zfcp_fsf_req
*zfcp_fsf_alloc_qtcb(mempool_t
*pool
)
692 struct zfcp_fsf_req_qtcb
*qtcb
;
695 qtcb
= mempool_alloc(pool
, GFP_ATOMIC
);
697 qtcb
= kmem_cache_alloc(zfcp_data
.fsf_req_qtcb_cache
,
702 memset(qtcb
, 0, sizeof(*qtcb
));
703 qtcb
->fsf_req
.qtcb
= &qtcb
->qtcb
;
704 qtcb
->fsf_req
.pool
= pool
;
706 return &qtcb
->fsf_req
;
709 static struct zfcp_fsf_req
*zfcp_fsf_req_create(struct zfcp_adapter
*adapter
,
710 u32 fsf_cmd
, int req_flags
,
713 struct qdio_buffer_element
*sbale
;
715 struct zfcp_fsf_req
*req
;
716 struct zfcp_qdio_queue
*req_q
= &adapter
->req_q
;
718 if (req_flags
& ZFCP_REQ_NO_QTCB
)
719 req
= zfcp_fsf_alloc_noqtcb(pool
);
721 req
= zfcp_fsf_alloc_qtcb(pool
);
724 return ERR_PTR(-EIO
);
726 if (adapter
->req_no
== 0)
729 INIT_LIST_HEAD(&req
->list
);
730 init_timer(&req
->timer
);
731 init_waitqueue_head(&req
->completion_wq
);
733 req
->adapter
= adapter
;
734 req
->fsf_command
= fsf_cmd
;
735 req
->req_id
= adapter
->req_no
++;
736 req
->sbal_number
= 1;
737 req
->sbal_first
= req_q
->first
;
738 req
->sbal_last
= req_q
->first
;
741 sbale
= zfcp_qdio_sbale_req(req
);
742 sbale
[0].addr
= (void *) req
->req_id
;
743 sbale
[0].flags
|= SBAL_FLAGS0_COMMAND
;
745 if (likely(req
->qtcb
)) {
746 req
->qtcb
->prefix
.req_seq_no
= req
->adapter
->fsf_req_seq_no
;
747 req
->qtcb
->prefix
.req_id
= req
->req_id
;
748 req
->qtcb
->prefix
.ulp_info
= 26;
749 req
->qtcb
->prefix
.qtcb_type
= fsf_qtcb_type
[req
->fsf_command
];
750 req
->qtcb
->prefix
.qtcb_version
= FSF_QTCB_CURRENT_VERSION
;
751 req
->qtcb
->header
.req_handle
= req
->req_id
;
752 req
->qtcb
->header
.fsf_command
= req
->fsf_command
;
753 req
->seq_no
= adapter
->fsf_req_seq_no
;
754 req
->qtcb
->prefix
.req_seq_no
= adapter
->fsf_req_seq_no
;
755 sbale
[1].addr
= (void *) req
->qtcb
;
756 sbale
[1].length
= sizeof(struct fsf_qtcb
);
759 if (!(atomic_read(&adapter
->status
) & ZFCP_STATUS_ADAPTER_QDIOUP
)) {
760 zfcp_fsf_req_free(req
);
761 return ERR_PTR(-EIO
);
764 if (likely(req_flags
& ZFCP_REQ_AUTO_CLEANUP
))
765 req
->status
|= ZFCP_STATUS_FSFREQ_CLEANUP
;
770 static int zfcp_fsf_req_send(struct zfcp_fsf_req
*req
)
772 struct zfcp_adapter
*adapter
= req
->adapter
;
776 /* put allocated FSF request into hash table */
777 spin_lock_irqsave(&adapter
->req_list_lock
, flags
);
778 idx
= zfcp_reqlist_hash(req
->req_id
);
779 list_add_tail(&req
->list
, &adapter
->req_list
[idx
]);
780 spin_unlock_irqrestore(&adapter
->req_list_lock
, flags
);
782 req
->qdio_outb_usage
= atomic_read(&adapter
->req_q
.count
);
783 req
->issued
= get_clock();
784 if (zfcp_qdio_send(req
)) {
785 del_timer(&req
->timer
);
786 spin_lock_irqsave(&adapter
->req_list_lock
, flags
);
787 /* lookup request again, list might have changed */
788 if (zfcp_reqlist_find_safe(adapter
, req
))
789 zfcp_reqlist_remove(adapter
, req
);
790 spin_unlock_irqrestore(&adapter
->req_list_lock
, flags
);
791 zfcp_erp_adapter_reopen(adapter
, 0, 116, req
);
795 /* Don't increase for unsolicited status */
797 adapter
->fsf_req_seq_no
++;
803 * zfcp_fsf_status_read - send status read request
804 * @adapter: pointer to struct zfcp_adapter
805 * @req_flags: request flags
806 * Returns: 0 on success, ERROR otherwise
808 int zfcp_fsf_status_read(struct zfcp_adapter
*adapter
)
810 struct zfcp_fsf_req
*req
;
811 struct fsf_status_read_buffer
*sr_buf
;
812 struct qdio_buffer_element
*sbale
;
815 spin_lock_bh(&adapter
->req_q_lock
);
816 if (zfcp_fsf_req_sbal_get(adapter
))
819 req
= zfcp_fsf_req_create(adapter
, FSF_QTCB_UNSOLICITED_STATUS
,
821 adapter
->pool
.fsf_req_status_read
);
823 retval
= PTR_ERR(req
);
827 sbale
= zfcp_qdio_sbale_req(req
);
828 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_STATUS
;
829 sbale
[2].flags
|= SBAL_FLAGS_LAST_ENTRY
;
832 sr_buf
= mempool_alloc(adapter
->pool
.data_status_read
, GFP_ATOMIC
);
837 memset(sr_buf
, 0, sizeof(*sr_buf
));
839 sbale
= zfcp_qdio_sbale_curr(req
);
840 sbale
->addr
= (void *) sr_buf
;
841 sbale
->length
= sizeof(*sr_buf
);
843 retval
= zfcp_fsf_req_send(req
);
845 goto failed_req_send
;
850 mempool_free(sr_buf
, adapter
->pool
.data_status_read
);
852 zfcp_fsf_req_free(req
);
853 zfcp_hba_dbf_event_fsf_unsol("fail", adapter
, NULL
);
855 spin_unlock_bh(&adapter
->req_q_lock
);
859 static void zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req
*req
)
861 struct zfcp_unit
*unit
= req
->data
;
862 union fsf_status_qual
*fsq
= &req
->qtcb
->header
.fsf_status_qual
;
864 if (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)
867 switch (req
->qtcb
->header
.fsf_status
) {
868 case FSF_PORT_HANDLE_NOT_VALID
:
869 if (fsq
->word
[0] == fsq
->word
[1]) {
870 zfcp_erp_adapter_reopen(unit
->port
->adapter
, 0, 104,
872 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
875 case FSF_LUN_HANDLE_NOT_VALID
:
876 if (fsq
->word
[0] == fsq
->word
[1]) {
877 zfcp_erp_port_reopen(unit
->port
, 0, 105, req
);
878 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
881 case FSF_FCP_COMMAND_DOES_NOT_EXIST
:
882 req
->status
|= ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED
;
885 zfcp_erp_port_boxed(unit
->port
, 47, req
);
886 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
|
887 ZFCP_STATUS_FSFREQ_RETRY
;
890 zfcp_erp_unit_boxed(unit
, 48, req
);
891 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
|
892 ZFCP_STATUS_FSFREQ_RETRY
;
894 case FSF_ADAPTER_STATUS_AVAILABLE
:
895 switch (fsq
->word
[0]) {
896 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE
:
897 zfcp_test_link(unit
->port
);
898 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED
:
899 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
904 req
->status
|= ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED
;
910 * zfcp_fsf_abort_fcp_command - abort running SCSI command
911 * @old_req_id: unsigned long
912 * @adapter: pointer to struct zfcp_adapter
913 * @unit: pointer to struct zfcp_unit
914 * @req_flags: integer specifying the request flags
915 * Returns: pointer to struct zfcp_fsf_req
917 * FIXME(design): should be watched by a timeout !!!
920 struct zfcp_fsf_req
*zfcp_fsf_abort_fcp_command(unsigned long old_req_id
,
921 struct zfcp_adapter
*adapter
,
922 struct zfcp_unit
*unit
,
925 struct qdio_buffer_element
*sbale
;
926 struct zfcp_fsf_req
*req
= NULL
;
928 spin_lock(&adapter
->req_q_lock
);
929 if (!zfcp_fsf_sbal_available(adapter
))
931 req
= zfcp_fsf_req_create(adapter
, FSF_QTCB_ABORT_FCP_CMND
,
932 req_flags
, adapter
->pool
.fsf_req_abort
);
938 if (unlikely(!(atomic_read(&unit
->status
) &
939 ZFCP_STATUS_COMMON_UNBLOCKED
)))
942 sbale
= zfcp_qdio_sbale_req(req
);
943 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_READ
;
944 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
947 req
->handler
= zfcp_fsf_abort_fcp_command_handler
;
948 req
->qtcb
->header
.lun_handle
= unit
->handle
;
949 req
->qtcb
->header
.port_handle
= unit
->port
->handle
;
950 req
->qtcb
->bottom
.support
.req_handle
= (u64
) old_req_id
;
952 zfcp_fsf_start_timer(req
, ZFCP_SCSI_ER_TIMEOUT
);
953 if (!zfcp_fsf_req_send(req
))
957 zfcp_fsf_req_free(req
);
960 spin_unlock(&adapter
->req_q_lock
);
964 static void zfcp_fsf_send_ct_handler(struct zfcp_fsf_req
*req
)
966 struct zfcp_adapter
*adapter
= req
->adapter
;
967 struct zfcp_send_ct
*send_ct
= req
->data
;
968 struct fsf_qtcb_header
*header
= &req
->qtcb
->header
;
970 send_ct
->status
= -EINVAL
;
972 if (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)
975 switch (header
->fsf_status
) {
977 zfcp_san_dbf_event_ct_response(req
);
980 case FSF_SERVICE_CLASS_NOT_SUPPORTED
:
981 zfcp_fsf_class_not_supp(req
);
983 case FSF_ADAPTER_STATUS_AVAILABLE
:
984 switch (header
->fsf_status_qual
.word
[0]){
985 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE
:
986 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED
:
987 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
991 case FSF_ACCESS_DENIED
:
994 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
|
995 ZFCP_STATUS_FSFREQ_RETRY
;
997 case FSF_PORT_HANDLE_NOT_VALID
:
998 zfcp_erp_adapter_reopen(adapter
, 0, 106, req
);
999 case FSF_GENERIC_COMMAND_REJECTED
:
1000 case FSF_PAYLOAD_SIZE_MISMATCH
:
1001 case FSF_REQUEST_SIZE_TOO_LARGE
:
1002 case FSF_RESPONSE_SIZE_TOO_LARGE
:
1003 case FSF_SBAL_MISMATCH
:
1004 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1009 if (send_ct
->handler
)
1010 send_ct
->handler(send_ct
->handler_data
);
1013 static int zfcp_fsf_setup_sbals(struct zfcp_fsf_req
*req
,
1014 struct scatterlist
*sg_req
,
1015 struct scatterlist
*sg_resp
, int max_sbals
)
1019 bytes
= zfcp_qdio_sbals_from_sg(req
, SBAL_FLAGS0_TYPE_WRITE_READ
,
1023 req
->qtcb
->bottom
.support
.req_buf_length
= bytes
;
1024 req
->sbale_curr
= ZFCP_LAST_SBALE_PER_SBAL
;
1026 bytes
= zfcp_qdio_sbals_from_sg(req
, SBAL_FLAGS0_TYPE_WRITE_READ
,
1027 sg_resp
, max_sbals
);
1030 req
->qtcb
->bottom
.support
.resp_buf_length
= bytes
;
1036 * zfcp_fsf_send_ct - initiate a Generic Service request (FC-GS)
1037 * @ct: pointer to struct zfcp_send_ct with data for request
1038 * @pool: if non-null this mempool is used to allocate struct zfcp_fsf_req
1039 * @erp_action: if non-null the Generic Service request sent within ERP
1041 int zfcp_fsf_send_ct(struct zfcp_send_ct
*ct
, mempool_t
*pool
,
1042 struct zfcp_erp_action
*erp_action
)
1044 struct zfcp_wka_port
*wka_port
= ct
->wka_port
;
1045 struct zfcp_adapter
*adapter
= wka_port
->adapter
;
1046 struct zfcp_fsf_req
*req
;
1049 spin_lock_bh(&adapter
->req_q_lock
);
1050 if (zfcp_fsf_req_sbal_get(adapter
))
1053 req
= zfcp_fsf_req_create(adapter
, FSF_QTCB_SEND_GENERIC
,
1054 ZFCP_REQ_AUTO_CLEANUP
, pool
);
1060 ret
= zfcp_fsf_setup_sbals(req
, ct
->req
, ct
->resp
,
1061 FSF_MAX_SBALS_PER_REQ
);
1065 req
->handler
= zfcp_fsf_send_ct_handler
;
1066 req
->qtcb
->header
.port_handle
= wka_port
->handle
;
1067 req
->qtcb
->bottom
.support
.service_class
= FSF_CLASS_3
;
1068 req
->qtcb
->bottom
.support
.timeout
= ct
->timeout
;
1071 zfcp_san_dbf_event_ct_request(req
);
1074 erp_action
->fsf_req
= req
;
1075 req
->erp_action
= erp_action
;
1076 zfcp_fsf_start_erp_timer(req
);
1078 zfcp_fsf_start_timer(req
, ZFCP_FSF_REQUEST_TIMEOUT
);
1080 ret
= zfcp_fsf_req_send(req
);
1087 zfcp_fsf_req_free(req
);
1089 erp_action
->fsf_req
= NULL
;
1091 spin_unlock_bh(&adapter
->req_q_lock
);
1095 static void zfcp_fsf_send_els_handler(struct zfcp_fsf_req
*req
)
1097 struct zfcp_send_els
*send_els
= req
->data
;
1098 struct zfcp_port
*port
= send_els
->port
;
1099 struct fsf_qtcb_header
*header
= &req
->qtcb
->header
;
1101 send_els
->status
= -EINVAL
;
1103 if (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)
1104 goto skip_fsfstatus
;
1106 switch (header
->fsf_status
) {
1108 zfcp_san_dbf_event_els_response(req
);
1109 send_els
->status
= 0;
1111 case FSF_SERVICE_CLASS_NOT_SUPPORTED
:
1112 zfcp_fsf_class_not_supp(req
);
1114 case FSF_ADAPTER_STATUS_AVAILABLE
:
1115 switch (header
->fsf_status_qual
.word
[0]){
1116 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE
:
1117 if (port
&& (send_els
->ls_code
!= ZFCP_LS_ADISC
))
1118 zfcp_test_link(port
);
1120 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED
:
1121 case FSF_SQ_RETRY_IF_POSSIBLE
:
1122 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1126 case FSF_ELS_COMMAND_REJECTED
:
1127 case FSF_PAYLOAD_SIZE_MISMATCH
:
1128 case FSF_REQUEST_SIZE_TOO_LARGE
:
1129 case FSF_RESPONSE_SIZE_TOO_LARGE
:
1131 case FSF_ACCESS_DENIED
:
1132 zfcp_fsf_access_denied_port(req
, port
);
1134 case FSF_SBAL_MISMATCH
:
1135 /* should never occure, avoided in zfcp_fsf_send_els */
1138 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1142 if (send_els
->handler
)
1143 send_els
->handler(send_els
->handler_data
);
1147 * zfcp_fsf_send_els - initiate an ELS command (FC-FS)
1148 * @els: pointer to struct zfcp_send_els with data for the command
1150 int zfcp_fsf_send_els(struct zfcp_send_els
*els
)
1152 struct zfcp_fsf_req
*req
;
1153 struct zfcp_adapter
*adapter
= els
->adapter
;
1154 struct fsf_qtcb_bottom_support
*bottom
;
1157 if (unlikely(!(atomic_read(&els
->port
->status
) &
1158 ZFCP_STATUS_COMMON_UNBLOCKED
)))
1161 spin_lock(&adapter
->req_q_lock
);
1162 if (!zfcp_fsf_sbal_available(adapter
))
1164 req
= zfcp_fsf_req_create(adapter
, FSF_QTCB_SEND_ELS
,
1165 ZFCP_REQ_AUTO_CLEANUP
, NULL
);
1171 ret
= zfcp_fsf_setup_sbals(req
, els
->req
, els
->resp
, 2);
1176 bottom
= &req
->qtcb
->bottom
.support
;
1177 req
->handler
= zfcp_fsf_send_els_handler
;
1178 bottom
->d_id
= els
->d_id
;
1179 bottom
->service_class
= FSF_CLASS_3
;
1180 bottom
->timeout
= 2 * R_A_TOV
;
1183 zfcp_san_dbf_event_els_request(req
);
1185 zfcp_fsf_start_timer(req
, ZFCP_FSF_REQUEST_TIMEOUT
);
1186 ret
= zfcp_fsf_req_send(req
);
1193 zfcp_fsf_req_free(req
);
1195 spin_unlock(&adapter
->req_q_lock
);
1199 int zfcp_fsf_exchange_config_data(struct zfcp_erp_action
*erp_action
)
1201 struct qdio_buffer_element
*sbale
;
1202 struct zfcp_fsf_req
*req
;
1203 struct zfcp_adapter
*adapter
= erp_action
->adapter
;
1206 spin_lock_bh(&adapter
->req_q_lock
);
1207 if (!zfcp_fsf_sbal_available(adapter
))
1209 req
= zfcp_fsf_req_create(adapter
,
1210 FSF_QTCB_EXCHANGE_CONFIG_DATA
,
1211 ZFCP_REQ_AUTO_CLEANUP
,
1212 adapter
->pool
.fsf_req_erp
);
1214 retval
= PTR_ERR(req
);
1218 sbale
= zfcp_qdio_sbale_req(req
);
1219 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_READ
;
1220 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
1222 req
->qtcb
->bottom
.config
.feature_selection
=
1224 FSF_FEATURE_LUN_SHARING
|
1225 FSF_FEATURE_NOTIFICATION_LOST
|
1226 FSF_FEATURE_UPDATE_ALERT
;
1227 req
->erp_action
= erp_action
;
1228 req
->handler
= zfcp_fsf_exchange_config_data_handler
;
1229 erp_action
->fsf_req
= req
;
1231 zfcp_fsf_start_erp_timer(req
);
1232 retval
= zfcp_fsf_req_send(req
);
1234 zfcp_fsf_req_free(req
);
1235 erp_action
->fsf_req
= NULL
;
1238 spin_unlock_bh(&adapter
->req_q_lock
);
1242 int zfcp_fsf_exchange_config_data_sync(struct zfcp_adapter
*adapter
,
1243 struct fsf_qtcb_bottom_config
*data
)
1245 struct qdio_buffer_element
*sbale
;
1246 struct zfcp_fsf_req
*req
= NULL
;
1249 spin_lock_bh(&adapter
->req_q_lock
);
1250 if (zfcp_fsf_req_sbal_get(adapter
))
1253 req
= zfcp_fsf_req_create(adapter
, FSF_QTCB_EXCHANGE_CONFIG_DATA
,
1256 retval
= PTR_ERR(req
);
1260 sbale
= zfcp_qdio_sbale_req(req
);
1261 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_READ
;
1262 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
1263 req
->handler
= zfcp_fsf_exchange_config_data_handler
;
1265 req
->qtcb
->bottom
.config
.feature_selection
=
1267 FSF_FEATURE_LUN_SHARING
|
1268 FSF_FEATURE_NOTIFICATION_LOST
|
1269 FSF_FEATURE_UPDATE_ALERT
;
1274 zfcp_fsf_start_timer(req
, ZFCP_FSF_REQUEST_TIMEOUT
);
1275 retval
= zfcp_fsf_req_send(req
);
1277 spin_unlock_bh(&adapter
->req_q_lock
);
1279 wait_event(req
->completion_wq
,
1280 req
->status
& ZFCP_STATUS_FSFREQ_COMPLETED
);
1282 zfcp_fsf_req_free(req
);
1288 * zfcp_fsf_exchange_port_data - request information about local port
1289 * @erp_action: ERP action for the adapter for which port data is requested
1290 * Returns: 0 on success, error otherwise
1292 int zfcp_fsf_exchange_port_data(struct zfcp_erp_action
*erp_action
)
1294 struct qdio_buffer_element
*sbale
;
1295 struct zfcp_fsf_req
*req
;
1296 struct zfcp_adapter
*adapter
= erp_action
->adapter
;
1299 if (!(adapter
->adapter_features
& FSF_FEATURE_HBAAPI_MANAGEMENT
))
1302 spin_lock_bh(&adapter
->req_q_lock
);
1303 if (!zfcp_fsf_sbal_available(adapter
))
1305 req
= zfcp_fsf_req_create(adapter
, FSF_QTCB_EXCHANGE_PORT_DATA
,
1306 ZFCP_REQ_AUTO_CLEANUP
,
1307 adapter
->pool
.fsf_req_erp
);
1309 retval
= PTR_ERR(req
);
1313 sbale
= zfcp_qdio_sbale_req(req
);
1314 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_READ
;
1315 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
1317 req
->handler
= zfcp_fsf_exchange_port_data_handler
;
1318 req
->erp_action
= erp_action
;
1319 erp_action
->fsf_req
= req
;
1321 zfcp_fsf_start_erp_timer(req
);
1322 retval
= zfcp_fsf_req_send(req
);
1324 zfcp_fsf_req_free(req
);
1325 erp_action
->fsf_req
= NULL
;
1328 spin_unlock_bh(&adapter
->req_q_lock
);
1333 * zfcp_fsf_exchange_port_data_sync - request information about local port
1334 * @adapter: pointer to struct zfcp_adapter
1335 * @data: pointer to struct fsf_qtcb_bottom_port
1336 * Returns: 0 on success, error otherwise
1338 int zfcp_fsf_exchange_port_data_sync(struct zfcp_adapter
*adapter
,
1339 struct fsf_qtcb_bottom_port
*data
)
1341 struct qdio_buffer_element
*sbale
;
1342 struct zfcp_fsf_req
*req
= NULL
;
1345 if (!(adapter
->adapter_features
& FSF_FEATURE_HBAAPI_MANAGEMENT
))
1348 spin_lock_bh(&adapter
->req_q_lock
);
1349 if (!zfcp_fsf_sbal_available(adapter
))
1352 req
= zfcp_fsf_req_create(adapter
, FSF_QTCB_EXCHANGE_PORT_DATA
, 0,
1355 retval
= PTR_ERR(req
);
1362 sbale
= zfcp_qdio_sbale_req(req
);
1363 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_READ
;
1364 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
1366 req
->handler
= zfcp_fsf_exchange_port_data_handler
;
1367 zfcp_fsf_start_timer(req
, ZFCP_FSF_REQUEST_TIMEOUT
);
1368 retval
= zfcp_fsf_req_send(req
);
1370 spin_unlock_bh(&adapter
->req_q_lock
);
1372 wait_event(req
->completion_wq
,
1373 req
->status
& ZFCP_STATUS_FSFREQ_COMPLETED
);
1374 zfcp_fsf_req_free(req
);
1379 static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req
*req
)
1381 struct zfcp_port
*port
= req
->data
;
1382 struct fsf_qtcb_header
*header
= &req
->qtcb
->header
;
1383 struct fsf_plogi
*plogi
;
1385 if (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)
1388 switch (header
->fsf_status
) {
1389 case FSF_PORT_ALREADY_OPEN
:
1391 case FSF_ACCESS_DENIED
:
1392 zfcp_fsf_access_denied_port(req
, port
);
1394 case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED
:
1395 dev_warn(&req
->adapter
->ccw_device
->dev
,
1396 "Not enough FCP adapter resources to open "
1397 "remote port 0x%016Lx\n",
1398 (unsigned long long)port
->wwpn
);
1399 zfcp_erp_port_failed(port
, 31, req
);
1400 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1402 case FSF_ADAPTER_STATUS_AVAILABLE
:
1403 switch (header
->fsf_status_qual
.word
[0]) {
1404 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE
:
1405 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED
:
1406 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1408 case FSF_SQ_NO_RETRY_POSSIBLE
:
1409 dev_warn(&req
->adapter
->ccw_device
->dev
,
1410 "Remote port 0x%016Lx could not be opened\n",
1411 (unsigned long long)port
->wwpn
);
1412 zfcp_erp_port_failed(port
, 32, req
);
1413 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1418 port
->handle
= header
->port_handle
;
1419 atomic_set_mask(ZFCP_STATUS_COMMON_OPEN
|
1420 ZFCP_STATUS_PORT_PHYS_OPEN
, &port
->status
);
1421 atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED
|
1422 ZFCP_STATUS_COMMON_ACCESS_BOXED
,
1424 /* check whether D_ID has changed during open */
1426 * FIXME: This check is not airtight, as the FCP channel does
1427 * not monitor closures of target port connections caused on
1428 * the remote side. Thus, they might miss out on invalidating
1429 * locally cached WWPNs (and other N_Port parameters) of gone
1430 * target ports. So, our heroic attempt to make things safe
1431 * could be undermined by 'open port' response data tagged with
1432 * obsolete WWPNs. Another reason to monitor potential
1433 * connection closures ourself at least (by interpreting
1434 * incoming ELS' and unsolicited status). It just crosses my
1435 * mind that one should be able to cross-check by means of
1436 * another GID_PN straight after a port has been opened.
1437 * Alternately, an ADISC/PDISC ELS should suffice, as well.
1439 plogi
= (struct fsf_plogi
*) req
->qtcb
->bottom
.support
.els
;
1440 if (req
->qtcb
->bottom
.support
.els1_length
>= sizeof(*plogi
)) {
1441 if (plogi
->serv_param
.wwpn
!= port
->wwpn
)
1442 atomic_clear_mask(ZFCP_STATUS_PORT_DID_DID
,
1445 port
->wwnn
= plogi
->serv_param
.wwnn
;
1446 zfcp_fc_plogi_evaluate(port
, plogi
);
1450 case FSF_UNKNOWN_OP_SUBTYPE
:
1451 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1457 * zfcp_fsf_open_port - create and send open port request
1458 * @erp_action: pointer to struct zfcp_erp_action
1459 * Returns: 0 on success, error otherwise
1461 int zfcp_fsf_open_port(struct zfcp_erp_action
*erp_action
)
1463 struct qdio_buffer_element
*sbale
;
1464 struct zfcp_adapter
*adapter
= erp_action
->adapter
;
1465 struct zfcp_fsf_req
*req
;
1468 spin_lock_bh(&adapter
->req_q_lock
);
1469 if (zfcp_fsf_req_sbal_get(adapter
))
1472 req
= zfcp_fsf_req_create(adapter
,
1473 FSF_QTCB_OPEN_PORT_WITH_DID
,
1474 ZFCP_REQ_AUTO_CLEANUP
,
1475 adapter
->pool
.fsf_req_erp
);
1477 retval
= PTR_ERR(req
);
1481 sbale
= zfcp_qdio_sbale_req(req
);
1482 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_READ
;
1483 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
1485 req
->handler
= zfcp_fsf_open_port_handler
;
1486 req
->qtcb
->bottom
.support
.d_id
= erp_action
->port
->d_id
;
1487 req
->data
= erp_action
->port
;
1488 req
->erp_action
= erp_action
;
1489 erp_action
->fsf_req
= req
;
1491 zfcp_fsf_start_erp_timer(req
);
1492 retval
= zfcp_fsf_req_send(req
);
1494 zfcp_fsf_req_free(req
);
1495 erp_action
->fsf_req
= NULL
;
1498 spin_unlock_bh(&adapter
->req_q_lock
);
1502 static void zfcp_fsf_close_port_handler(struct zfcp_fsf_req
*req
)
1504 struct zfcp_port
*port
= req
->data
;
1506 if (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)
1509 switch (req
->qtcb
->header
.fsf_status
) {
1510 case FSF_PORT_HANDLE_NOT_VALID
:
1511 zfcp_erp_adapter_reopen(port
->adapter
, 0, 107, req
);
1512 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1514 case FSF_ADAPTER_STATUS_AVAILABLE
:
1517 zfcp_erp_modify_port_status(port
, 33, req
,
1518 ZFCP_STATUS_COMMON_OPEN
,
1525 * zfcp_fsf_close_port - create and send close port request
1526 * @erp_action: pointer to struct zfcp_erp_action
1527 * Returns: 0 on success, error otherwise
1529 int zfcp_fsf_close_port(struct zfcp_erp_action
*erp_action
)
1531 struct qdio_buffer_element
*sbale
;
1532 struct zfcp_adapter
*adapter
= erp_action
->adapter
;
1533 struct zfcp_fsf_req
*req
;
1536 spin_lock_bh(&adapter
->req_q_lock
);
1537 if (zfcp_fsf_req_sbal_get(adapter
))
1540 req
= zfcp_fsf_req_create(adapter
, FSF_QTCB_CLOSE_PORT
,
1541 ZFCP_REQ_AUTO_CLEANUP
,
1542 adapter
->pool
.fsf_req_erp
);
1544 retval
= PTR_ERR(req
);
1548 sbale
= zfcp_qdio_sbale_req(req
);
1549 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_READ
;
1550 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
1552 req
->handler
= zfcp_fsf_close_port_handler
;
1553 req
->data
= erp_action
->port
;
1554 req
->erp_action
= erp_action
;
1555 req
->qtcb
->header
.port_handle
= erp_action
->port
->handle
;
1556 erp_action
->fsf_req
= req
;
1558 zfcp_fsf_start_erp_timer(req
);
1559 retval
= zfcp_fsf_req_send(req
);
1561 zfcp_fsf_req_free(req
);
1562 erp_action
->fsf_req
= NULL
;
1565 spin_unlock_bh(&adapter
->req_q_lock
);
1569 static void zfcp_fsf_open_wka_port_handler(struct zfcp_fsf_req
*req
)
1571 struct zfcp_wka_port
*wka_port
= req
->data
;
1572 struct fsf_qtcb_header
*header
= &req
->qtcb
->header
;
1574 if (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
) {
1575 wka_port
->status
= ZFCP_WKA_PORT_OFFLINE
;
1579 switch (header
->fsf_status
) {
1580 case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED
:
1581 dev_warn(&req
->adapter
->ccw_device
->dev
,
1582 "Opening WKA port 0x%x failed\n", wka_port
->d_id
);
1583 case FSF_ADAPTER_STATUS_AVAILABLE
:
1584 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1585 case FSF_ACCESS_DENIED
:
1586 wka_port
->status
= ZFCP_WKA_PORT_OFFLINE
;
1588 case FSF_PORT_ALREADY_OPEN
:
1591 wka_port
->handle
= header
->port_handle
;
1592 wka_port
->status
= ZFCP_WKA_PORT_ONLINE
;
1595 wake_up(&wka_port
->completion_wq
);
1599 * zfcp_fsf_open_wka_port - create and send open wka-port request
1600 * @wka_port: pointer to struct zfcp_wka_port
1601 * Returns: 0 on success, error otherwise
1603 int zfcp_fsf_open_wka_port(struct zfcp_wka_port
*wka_port
)
1605 struct qdio_buffer_element
*sbale
;
1606 struct zfcp_adapter
*adapter
= wka_port
->adapter
;
1607 struct zfcp_fsf_req
*req
;
1610 spin_lock_bh(&adapter
->req_q_lock
);
1611 if (zfcp_fsf_req_sbal_get(adapter
))
1614 req
= zfcp_fsf_req_create(adapter
,
1615 FSF_QTCB_OPEN_PORT_WITH_DID
,
1616 ZFCP_REQ_AUTO_CLEANUP
,
1617 adapter
->pool
.fsf_req_erp
);
1618 if (unlikely(IS_ERR(req
))) {
1619 retval
= PTR_ERR(req
);
1623 sbale
= zfcp_qdio_sbale_req(req
);
1624 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_READ
;
1625 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
1627 req
->handler
= zfcp_fsf_open_wka_port_handler
;
1628 req
->qtcb
->bottom
.support
.d_id
= wka_port
->d_id
;
1629 req
->data
= wka_port
;
1631 zfcp_fsf_start_timer(req
, ZFCP_FSF_REQUEST_TIMEOUT
);
1632 retval
= zfcp_fsf_req_send(req
);
1634 zfcp_fsf_req_free(req
);
1636 spin_unlock_bh(&adapter
->req_q_lock
);
1640 static void zfcp_fsf_close_wka_port_handler(struct zfcp_fsf_req
*req
)
1642 struct zfcp_wka_port
*wka_port
= req
->data
;
1644 if (req
->qtcb
->header
.fsf_status
== FSF_PORT_HANDLE_NOT_VALID
) {
1645 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1646 zfcp_erp_adapter_reopen(wka_port
->adapter
, 0, 84, req
);
1649 wka_port
->status
= ZFCP_WKA_PORT_OFFLINE
;
1650 wake_up(&wka_port
->completion_wq
);
1654 * zfcp_fsf_close_wka_port - create and send close wka port request
1655 * @erp_action: pointer to struct zfcp_erp_action
1656 * Returns: 0 on success, error otherwise
1658 int zfcp_fsf_close_wka_port(struct zfcp_wka_port
*wka_port
)
1660 struct qdio_buffer_element
*sbale
;
1661 struct zfcp_adapter
*adapter
= wka_port
->adapter
;
1662 struct zfcp_fsf_req
*req
;
1665 spin_lock_bh(&adapter
->req_q_lock
);
1666 if (zfcp_fsf_req_sbal_get(adapter
))
1669 req
= zfcp_fsf_req_create(adapter
, FSF_QTCB_CLOSE_PORT
,
1670 ZFCP_REQ_AUTO_CLEANUP
,
1671 adapter
->pool
.fsf_req_erp
);
1672 if (unlikely(IS_ERR(req
))) {
1673 retval
= PTR_ERR(req
);
1677 sbale
= zfcp_qdio_sbale_req(req
);
1678 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_READ
;
1679 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
1681 req
->handler
= zfcp_fsf_close_wka_port_handler
;
1682 req
->data
= wka_port
;
1683 req
->qtcb
->header
.port_handle
= wka_port
->handle
;
1685 zfcp_fsf_start_timer(req
, ZFCP_FSF_REQUEST_TIMEOUT
);
1686 retval
= zfcp_fsf_req_send(req
);
1688 zfcp_fsf_req_free(req
);
1690 spin_unlock_bh(&adapter
->req_q_lock
);
1694 static void zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req
*req
)
1696 struct zfcp_port
*port
= req
->data
;
1697 struct fsf_qtcb_header
*header
= &req
->qtcb
->header
;
1698 struct zfcp_unit
*unit
;
1700 if (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)
1701 goto skip_fsfstatus
;
1703 switch (header
->fsf_status
) {
1704 case FSF_PORT_HANDLE_NOT_VALID
:
1705 zfcp_erp_adapter_reopen(port
->adapter
, 0, 108, req
);
1706 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1708 case FSF_ACCESS_DENIED
:
1709 zfcp_fsf_access_denied_port(req
, port
);
1711 case FSF_PORT_BOXED
:
1712 zfcp_erp_port_boxed(port
, 50, req
);
1713 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
|
1714 ZFCP_STATUS_FSFREQ_RETRY
;
1715 /* can't use generic zfcp_erp_modify_port_status because
1716 * ZFCP_STATUS_COMMON_OPEN must not be reset for the port */
1717 atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN
, &port
->status
);
1718 list_for_each_entry(unit
, &port
->unit_list_head
, list
)
1719 atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN
,
1722 case FSF_ADAPTER_STATUS_AVAILABLE
:
1723 switch (header
->fsf_status_qual
.word
[0]) {
1724 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE
:
1726 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED
:
1727 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1732 /* can't use generic zfcp_erp_modify_port_status because
1733 * ZFCP_STATUS_COMMON_OPEN must not be reset for the port
1735 atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN
, &port
->status
);
1736 list_for_each_entry(unit
, &port
->unit_list_head
, list
)
1737 atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN
,
1742 atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_CLOSING
, &port
->status
);
1746 * zfcp_fsf_close_physical_port - close physical port
1747 * @erp_action: pointer to struct zfcp_erp_action
1748 * Returns: 0 on success
1750 int zfcp_fsf_close_physical_port(struct zfcp_erp_action
*erp_action
)
1752 struct qdio_buffer_element
*sbale
;
1753 struct zfcp_adapter
*adapter
= erp_action
->adapter
;
1754 struct zfcp_fsf_req
*req
;
1757 spin_lock_bh(&adapter
->req_q_lock
);
1758 if (zfcp_fsf_req_sbal_get(adapter
))
1761 req
= zfcp_fsf_req_create(adapter
, FSF_QTCB_CLOSE_PHYSICAL_PORT
,
1762 ZFCP_REQ_AUTO_CLEANUP
,
1763 adapter
->pool
.fsf_req_erp
);
1765 retval
= PTR_ERR(req
);
1769 sbale
= zfcp_qdio_sbale_req(req
);
1770 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_READ
;
1771 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
1773 req
->data
= erp_action
->port
;
1774 req
->qtcb
->header
.port_handle
= erp_action
->port
->handle
;
1775 req
->erp_action
= erp_action
;
1776 req
->handler
= zfcp_fsf_close_physical_port_handler
;
1777 erp_action
->fsf_req
= req
;
1778 atomic_set_mask(ZFCP_STATUS_PORT_PHYS_CLOSING
,
1779 &erp_action
->port
->status
);
1781 zfcp_fsf_start_erp_timer(req
);
1782 retval
= zfcp_fsf_req_send(req
);
1784 zfcp_fsf_req_free(req
);
1785 erp_action
->fsf_req
= NULL
;
1788 spin_unlock_bh(&adapter
->req_q_lock
);
1792 static void zfcp_fsf_open_unit_handler(struct zfcp_fsf_req
*req
)
1794 struct zfcp_adapter
*adapter
= req
->adapter
;
1795 struct zfcp_unit
*unit
= req
->data
;
1796 struct fsf_qtcb_header
*header
= &req
->qtcb
->header
;
1797 struct fsf_qtcb_bottom_support
*bottom
= &req
->qtcb
->bottom
.support
;
1798 struct fsf_queue_designator
*queue_designator
=
1799 &header
->fsf_status_qual
.fsf_queue_designator
;
1800 int exclusive
, readwrite
;
1802 if (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)
1805 atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED
|
1806 ZFCP_STATUS_COMMON_ACCESS_BOXED
|
1807 ZFCP_STATUS_UNIT_SHARED
|
1808 ZFCP_STATUS_UNIT_READONLY
,
1811 switch (header
->fsf_status
) {
1813 case FSF_PORT_HANDLE_NOT_VALID
:
1814 zfcp_erp_adapter_reopen(unit
->port
->adapter
, 0, 109, req
);
1816 case FSF_LUN_ALREADY_OPEN
:
1818 case FSF_ACCESS_DENIED
:
1819 zfcp_fsf_access_denied_unit(req
, unit
);
1820 atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED
, &unit
->status
);
1821 atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY
, &unit
->status
);
1823 case FSF_PORT_BOXED
:
1824 zfcp_erp_port_boxed(unit
->port
, 51, req
);
1825 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
|
1826 ZFCP_STATUS_FSFREQ_RETRY
;
1828 case FSF_LUN_SHARING_VIOLATION
:
1829 if (header
->fsf_status_qual
.word
[0])
1830 dev_warn(&adapter
->ccw_device
->dev
,
1831 "LUN 0x%Lx on port 0x%Lx is already in "
1832 "use by CSS%d, MIF Image ID %x\n",
1833 (unsigned long long)unit
->fcp_lun
,
1834 (unsigned long long)unit
->port
->wwpn
,
1835 queue_designator
->cssid
,
1836 queue_designator
->hla
);
1838 zfcp_act_eval_err(adapter
,
1839 header
->fsf_status_qual
.word
[2]);
1840 zfcp_erp_unit_access_denied(unit
, 60, req
);
1841 atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED
, &unit
->status
);
1842 atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY
, &unit
->status
);
1843 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1845 case FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED
:
1846 dev_warn(&adapter
->ccw_device
->dev
,
1847 "No handle is available for LUN "
1848 "0x%016Lx on port 0x%016Lx\n",
1849 (unsigned long long)unit
->fcp_lun
,
1850 (unsigned long long)unit
->port
->wwpn
);
1851 zfcp_erp_unit_failed(unit
, 34, req
);
1853 case FSF_INVALID_COMMAND_OPTION
:
1854 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1856 case FSF_ADAPTER_STATUS_AVAILABLE
:
1857 switch (header
->fsf_status_qual
.word
[0]) {
1858 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE
:
1859 zfcp_test_link(unit
->port
);
1861 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED
:
1862 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1868 unit
->handle
= header
->lun_handle
;
1869 atomic_set_mask(ZFCP_STATUS_COMMON_OPEN
, &unit
->status
);
1871 if (!(adapter
->connection_features
& FSF_FEATURE_NPIV_MODE
) &&
1872 (adapter
->adapter_features
& FSF_FEATURE_LUN_SHARING
) &&
1873 (adapter
->ccw_device
->id
.dev_model
!= ZFCP_DEVICE_MODEL_PRIV
)) {
1874 exclusive
= (bottom
->lun_access_info
&
1875 FSF_UNIT_ACCESS_EXCLUSIVE
);
1876 readwrite
= (bottom
->lun_access_info
&
1877 FSF_UNIT_ACCESS_OUTBOUND_TRANSFER
);
1880 atomic_set_mask(ZFCP_STATUS_UNIT_SHARED
,
1884 atomic_set_mask(ZFCP_STATUS_UNIT_READONLY
,
1886 dev_info(&adapter
->ccw_device
->dev
,
1887 "SCSI device at LUN 0x%016Lx on port "
1888 "0x%016Lx opened read-only\n",
1889 (unsigned long long)unit
->fcp_lun
,
1890 (unsigned long long)unit
->port
->wwpn
);
1893 if (exclusive
&& !readwrite
) {
1894 dev_err(&adapter
->ccw_device
->dev
,
1895 "Exclusive read-only access not "
1896 "supported (unit 0x%016Lx, "
1898 (unsigned long long)unit
->fcp_lun
,
1899 (unsigned long long)unit
->port
->wwpn
);
1900 zfcp_erp_unit_failed(unit
, 35, req
);
1901 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1902 zfcp_erp_unit_shutdown(unit
, 0, 80, req
);
1903 } else if (!exclusive
&& readwrite
) {
1904 dev_err(&adapter
->ccw_device
->dev
,
1905 "Shared read-write access not "
1906 "supported (unit 0x%016Lx, port "
1908 (unsigned long long)unit
->fcp_lun
,
1909 (unsigned long long)unit
->port
->wwpn
);
1910 zfcp_erp_unit_failed(unit
, 36, req
);
1911 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1912 zfcp_erp_unit_shutdown(unit
, 0, 81, req
);
1920 * zfcp_fsf_open_unit - open unit
1921 * @erp_action: pointer to struct zfcp_erp_action
1922 * Returns: 0 on success, error otherwise
1924 int zfcp_fsf_open_unit(struct zfcp_erp_action
*erp_action
)
1926 struct qdio_buffer_element
*sbale
;
1927 struct zfcp_adapter
*adapter
= erp_action
->adapter
;
1928 struct zfcp_fsf_req
*req
;
1931 spin_lock_bh(&adapter
->req_q_lock
);
1932 if (zfcp_fsf_req_sbal_get(adapter
))
1935 req
= zfcp_fsf_req_create(adapter
, FSF_QTCB_OPEN_LUN
,
1936 ZFCP_REQ_AUTO_CLEANUP
,
1937 adapter
->pool
.fsf_req_erp
);
1939 retval
= PTR_ERR(req
);
1943 sbale
= zfcp_qdio_sbale_req(req
);
1944 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_READ
;
1945 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
1947 req
->qtcb
->header
.port_handle
= erp_action
->port
->handle
;
1948 req
->qtcb
->bottom
.support
.fcp_lun
= erp_action
->unit
->fcp_lun
;
1949 req
->handler
= zfcp_fsf_open_unit_handler
;
1950 req
->data
= erp_action
->unit
;
1951 req
->erp_action
= erp_action
;
1952 erp_action
->fsf_req
= req
;
1954 if (!(adapter
->connection_features
& FSF_FEATURE_NPIV_MODE
))
1955 req
->qtcb
->bottom
.support
.option
= FSF_OPEN_LUN_SUPPRESS_BOXING
;
1957 zfcp_fsf_start_erp_timer(req
);
1958 retval
= zfcp_fsf_req_send(req
);
1960 zfcp_fsf_req_free(req
);
1961 erp_action
->fsf_req
= NULL
;
1964 spin_unlock_bh(&adapter
->req_q_lock
);
1968 static void zfcp_fsf_close_unit_handler(struct zfcp_fsf_req
*req
)
1970 struct zfcp_unit
*unit
= req
->data
;
1972 if (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)
1975 switch (req
->qtcb
->header
.fsf_status
) {
1976 case FSF_PORT_HANDLE_NOT_VALID
:
1977 zfcp_erp_adapter_reopen(unit
->port
->adapter
, 0, 110, req
);
1978 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1980 case FSF_LUN_HANDLE_NOT_VALID
:
1981 zfcp_erp_port_reopen(unit
->port
, 0, 111, req
);
1982 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1984 case FSF_PORT_BOXED
:
1985 zfcp_erp_port_boxed(unit
->port
, 52, req
);
1986 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
|
1987 ZFCP_STATUS_FSFREQ_RETRY
;
1989 case FSF_ADAPTER_STATUS_AVAILABLE
:
1990 switch (req
->qtcb
->header
.fsf_status_qual
.word
[0]) {
1991 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE
:
1992 zfcp_test_link(unit
->port
);
1994 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED
:
1995 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
2000 atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN
, &unit
->status
);
2006 * zfcp_fsf_close_unit - close zfcp unit
2007 * @erp_action: pointer to struct zfcp_unit
2008 * Returns: 0 on success, error otherwise
2010 int zfcp_fsf_close_unit(struct zfcp_erp_action
*erp_action
)
2012 struct qdio_buffer_element
*sbale
;
2013 struct zfcp_adapter
*adapter
= erp_action
->adapter
;
2014 struct zfcp_fsf_req
*req
;
2017 spin_lock_bh(&adapter
->req_q_lock
);
2018 if (zfcp_fsf_req_sbal_get(adapter
))
2020 req
= zfcp_fsf_req_create(adapter
, FSF_QTCB_CLOSE_LUN
,
2021 ZFCP_REQ_AUTO_CLEANUP
,
2022 adapter
->pool
.fsf_req_erp
);
2024 retval
= PTR_ERR(req
);
2028 sbale
= zfcp_qdio_sbale_req(req
);
2029 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_READ
;
2030 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
2032 req
->qtcb
->header
.port_handle
= erp_action
->port
->handle
;
2033 req
->qtcb
->header
.lun_handle
= erp_action
->unit
->handle
;
2034 req
->handler
= zfcp_fsf_close_unit_handler
;
2035 req
->data
= erp_action
->unit
;
2036 req
->erp_action
= erp_action
;
2037 erp_action
->fsf_req
= req
;
2039 zfcp_fsf_start_erp_timer(req
);
2040 retval
= zfcp_fsf_req_send(req
);
2042 zfcp_fsf_req_free(req
);
2043 erp_action
->fsf_req
= NULL
;
2046 spin_unlock_bh(&adapter
->req_q_lock
);
2050 static void zfcp_fsf_update_lat(struct fsf_latency_record
*lat_rec
, u32 lat
)
2052 lat_rec
->sum
+= lat
;
2053 lat_rec
->min
= min(lat_rec
->min
, lat
);
2054 lat_rec
->max
= max(lat_rec
->max
, lat
);
2057 static void zfcp_fsf_req_latency(struct zfcp_fsf_req
*req
)
2059 struct fsf_qual_latency_info
*lat_inf
;
2060 struct latency_cont
*lat
;
2061 struct zfcp_unit
*unit
= req
->unit
;
2062 unsigned long flags
;
2064 lat_inf
= &req
->qtcb
->prefix
.prot_status_qual
.latency_info
;
2066 switch (req
->qtcb
->bottom
.io
.data_direction
) {
2067 case FSF_DATADIR_READ
:
2068 lat
= &unit
->latencies
.read
;
2070 case FSF_DATADIR_WRITE
:
2071 lat
= &unit
->latencies
.write
;
2073 case FSF_DATADIR_CMND
:
2074 lat
= &unit
->latencies
.cmd
;
2080 spin_lock_irqsave(&unit
->latencies
.lock
, flags
);
2081 zfcp_fsf_update_lat(&lat
->channel
, lat_inf
->channel_lat
);
2082 zfcp_fsf_update_lat(&lat
->fabric
, lat_inf
->fabric_lat
);
2084 spin_unlock_irqrestore(&unit
->latencies
.lock
, flags
);
2087 #ifdef CONFIG_BLK_DEV_IO_TRACE
2088 static void zfcp_fsf_trace_latency(struct zfcp_fsf_req
*fsf_req
)
2090 struct fsf_qual_latency_info
*lat_inf
;
2091 struct scsi_cmnd
*scsi_cmnd
= (struct scsi_cmnd
*)fsf_req
->data
;
2092 struct request
*req
= scsi_cmnd
->request
;
2093 struct zfcp_blk_drv_data trace
;
2094 int ticks
= fsf_req
->adapter
->timer_ticks
;
2097 trace
.magic
= ZFCP_BLK_DRV_DATA_MAGIC
;
2098 if (fsf_req
->adapter
->adapter_features
& FSF_FEATURE_MEASUREMENT_DATA
) {
2099 trace
.flags
|= ZFCP_BLK_LAT_VALID
;
2100 lat_inf
= &fsf_req
->qtcb
->prefix
.prot_status_qual
.latency_info
;
2101 trace
.channel_lat
= lat_inf
->channel_lat
* ticks
;
2102 trace
.fabric_lat
= lat_inf
->fabric_lat
* ticks
;
2104 if (fsf_req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)
2105 trace
.flags
|= ZFCP_BLK_REQ_ERROR
;
2106 trace
.inb_usage
= fsf_req
->qdio_inb_usage
;
2107 trace
.outb_usage
= fsf_req
->qdio_outb_usage
;
2109 blk_add_driver_data(req
->q
, req
, &trace
, sizeof(trace
));
2112 static inline void zfcp_fsf_trace_latency(struct zfcp_fsf_req
*fsf_req
)
2117 static void zfcp_fsf_send_fcp_command_task_handler(struct zfcp_fsf_req
*req
)
2119 struct scsi_cmnd
*scpnt
;
2120 struct fcp_rsp_iu
*fcp_rsp_iu
= (struct fcp_rsp_iu
*)
2121 &(req
->qtcb
->bottom
.io
.fcp_rsp
);
2123 char *fcp_rsp_info
= (unsigned char *) &fcp_rsp_iu
[1];
2124 unsigned long flags
;
2126 read_lock_irqsave(&req
->adapter
->abort_lock
, flags
);
2129 if (unlikely(!scpnt
)) {
2130 read_unlock_irqrestore(&req
->adapter
->abort_lock
, flags
);
2134 if (unlikely(req
->status
& ZFCP_STATUS_FSFREQ_ABORTED
)) {
2135 set_host_byte(scpnt
, DID_SOFT_ERROR
);
2136 set_driver_byte(scpnt
, SUGGEST_RETRY
);
2137 goto skip_fsfstatus
;
2140 if (unlikely(req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)) {
2141 set_host_byte(scpnt
, DID_ERROR
);
2142 goto skip_fsfstatus
;
2145 set_msg_byte(scpnt
, COMMAND_COMPLETE
);
2147 scpnt
->result
|= fcp_rsp_iu
->scsi_status
;
2149 if (req
->adapter
->adapter_features
& FSF_FEATURE_MEASUREMENT_DATA
)
2150 zfcp_fsf_req_latency(req
);
2152 zfcp_fsf_trace_latency(req
);
2154 if (unlikely(fcp_rsp_iu
->validity
.bits
.fcp_rsp_len_valid
)) {
2155 if (fcp_rsp_info
[3] == RSP_CODE_GOOD
)
2156 set_host_byte(scpnt
, DID_OK
);
2158 set_host_byte(scpnt
, DID_ERROR
);
2159 goto skip_fsfstatus
;
2163 if (unlikely(fcp_rsp_iu
->validity
.bits
.fcp_sns_len_valid
)) {
2164 sns_len
= FSF_FCP_RSP_SIZE
- sizeof(struct fcp_rsp_iu
) +
2165 fcp_rsp_iu
->fcp_rsp_len
;
2166 sns_len
= min(sns_len
, (u32
) SCSI_SENSE_BUFFERSIZE
);
2167 sns_len
= min(sns_len
, fcp_rsp_iu
->fcp_sns_len
);
2169 memcpy(scpnt
->sense_buffer
,
2170 zfcp_get_fcp_sns_info_ptr(fcp_rsp_iu
), sns_len
);
2173 if (unlikely(fcp_rsp_iu
->validity
.bits
.fcp_resid_under
)) {
2174 scsi_set_resid(scpnt
, fcp_rsp_iu
->fcp_resid
);
2175 if (scsi_bufflen(scpnt
) - scsi_get_resid(scpnt
) <
2177 set_host_byte(scpnt
, DID_ERROR
);
2180 if (scpnt
->result
!= 0)
2181 zfcp_scsi_dbf_event_result("erro", 3, req
->adapter
, scpnt
, req
);
2182 else if (scpnt
->retries
> 0)
2183 zfcp_scsi_dbf_event_result("retr", 4, req
->adapter
, scpnt
, req
);
2185 zfcp_scsi_dbf_event_result("norm", 6, req
->adapter
, scpnt
, req
);
2187 scpnt
->host_scribble
= NULL
;
2188 (scpnt
->scsi_done
) (scpnt
);
2190 * We must hold this lock until scsi_done has been called.
2191 * Otherwise we may call scsi_done after abort regarding this
2192 * command has completed.
2193 * Note: scsi_done must not block!
2195 read_unlock_irqrestore(&req
->adapter
->abort_lock
, flags
);
2198 static void zfcp_fsf_send_fcp_ctm_handler(struct zfcp_fsf_req
*req
)
2200 struct fcp_rsp_iu
*fcp_rsp_iu
= (struct fcp_rsp_iu
*)
2201 &(req
->qtcb
->bottom
.io
.fcp_rsp
);
2202 char *fcp_rsp_info
= (unsigned char *) &fcp_rsp_iu
[1];
2204 if ((fcp_rsp_info
[3] != RSP_CODE_GOOD
) ||
2205 (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
))
2206 req
->status
|= ZFCP_STATUS_FSFREQ_TMFUNCFAILED
;
2210 static void zfcp_fsf_send_fcp_command_handler(struct zfcp_fsf_req
*req
)
2212 struct zfcp_unit
*unit
;
2213 struct fsf_qtcb_header
*header
= &req
->qtcb
->header
;
2215 if (unlikely(req
->status
& ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT
))
2220 if (unlikely(req
->status
& ZFCP_STATUS_FSFREQ_ERROR
))
2221 goto skip_fsfstatus
;
2223 switch (header
->fsf_status
) {
2224 case FSF_HANDLE_MISMATCH
:
2225 case FSF_PORT_HANDLE_NOT_VALID
:
2226 zfcp_erp_adapter_reopen(unit
->port
->adapter
, 0, 112, req
);
2227 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
2229 case FSF_FCPLUN_NOT_VALID
:
2230 case FSF_LUN_HANDLE_NOT_VALID
:
2231 zfcp_erp_port_reopen(unit
->port
, 0, 113, req
);
2232 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
2234 case FSF_SERVICE_CLASS_NOT_SUPPORTED
:
2235 zfcp_fsf_class_not_supp(req
);
2237 case FSF_ACCESS_DENIED
:
2238 zfcp_fsf_access_denied_unit(req
, unit
);
2240 case FSF_DIRECTION_INDICATOR_NOT_VALID
:
2241 dev_err(&req
->adapter
->ccw_device
->dev
,
2242 "Incorrect direction %d, unit 0x%016Lx on port "
2243 "0x%016Lx closed\n",
2244 req
->qtcb
->bottom
.io
.data_direction
,
2245 (unsigned long long)unit
->fcp_lun
,
2246 (unsigned long long)unit
->port
->wwpn
);
2247 zfcp_erp_adapter_shutdown(unit
->port
->adapter
, 0, 133, req
);
2248 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
2250 case FSF_CMND_LENGTH_NOT_VALID
:
2251 dev_err(&req
->adapter
->ccw_device
->dev
,
2252 "Incorrect CDB length %d, unit 0x%016Lx on "
2253 "port 0x%016Lx closed\n",
2254 req
->qtcb
->bottom
.io
.fcp_cmnd_length
,
2255 (unsigned long long)unit
->fcp_lun
,
2256 (unsigned long long)unit
->port
->wwpn
);
2257 zfcp_erp_adapter_shutdown(unit
->port
->adapter
, 0, 134, req
);
2258 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
2260 case FSF_PORT_BOXED
:
2261 zfcp_erp_port_boxed(unit
->port
, 53, req
);
2262 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
|
2263 ZFCP_STATUS_FSFREQ_RETRY
;
2266 zfcp_erp_unit_boxed(unit
, 54, req
);
2267 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
|
2268 ZFCP_STATUS_FSFREQ_RETRY
;
2270 case FSF_ADAPTER_STATUS_AVAILABLE
:
2271 if (header
->fsf_status_qual
.word
[0] ==
2272 FSF_SQ_INVOKE_LINK_TEST_PROCEDURE
)
2273 zfcp_test_link(unit
->port
);
2274 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
2278 if (req
->status
& ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT
)
2279 zfcp_fsf_send_fcp_ctm_handler(req
);
2281 zfcp_fsf_send_fcp_command_task_handler(req
);
2283 zfcp_unit_put(unit
);
2287 static void zfcp_set_fcp_dl(struct fcp_cmnd_iu
*fcp_cmd
, u32 fcp_dl
)
2292 * fcp_dl_addr = start address of fcp_cmnd structure +
2293 * size of fixed part + size of dynamically sized add_dcp_cdb field
2294 * SEE FCP-2 documentation
2296 fcp_dl_ptr
= (u32
*) ((unsigned char *) &fcp_cmd
[1] +
2297 (fcp_cmd
->add_fcp_cdb_length
<< 2));
2298 *fcp_dl_ptr
= fcp_dl
;
2302 * zfcp_fsf_send_fcp_command_task - initiate an FCP command (for a SCSI command)
2303 * @adapter: adapter where scsi command is issued
2304 * @unit: unit where command is sent to
2305 * @scsi_cmnd: scsi command to be sent
2306 * @timer: timer to be started when request is initiated
2307 * @req_flags: flags for fsf_request
2309 int zfcp_fsf_send_fcp_command_task(struct zfcp_adapter
*adapter
,
2310 struct zfcp_unit
*unit
,
2311 struct scsi_cmnd
*scsi_cmnd
,
2312 int use_timer
, int req_flags
)
2314 struct zfcp_fsf_req
*req
;
2315 struct fcp_cmnd_iu
*fcp_cmnd_iu
;
2316 unsigned int sbtype
;
2317 int real_bytes
, retval
= -EIO
;
2319 if (unlikely(!(atomic_read(&unit
->status
) &
2320 ZFCP_STATUS_COMMON_UNBLOCKED
)))
2323 spin_lock(&adapter
->req_q_lock
);
2324 if (!zfcp_fsf_sbal_available(adapter
))
2326 req
= zfcp_fsf_req_create(adapter
, FSF_QTCB_FCP_CMND
, req_flags
,
2327 adapter
->pool
.fsf_req_scsi
);
2329 retval
= PTR_ERR(req
);
2333 zfcp_unit_get(unit
);
2335 req
->data
= scsi_cmnd
;
2336 req
->handler
= zfcp_fsf_send_fcp_command_handler
;
2337 req
->qtcb
->header
.lun_handle
= unit
->handle
;
2338 req
->qtcb
->header
.port_handle
= unit
->port
->handle
;
2339 req
->qtcb
->bottom
.io
.service_class
= FSF_CLASS_3
;
2341 scsi_cmnd
->host_scribble
= (unsigned char *) req
->req_id
;
2343 fcp_cmnd_iu
= (struct fcp_cmnd_iu
*) &(req
->qtcb
->bottom
.io
.fcp_cmnd
);
2344 fcp_cmnd_iu
->fcp_lun
= unit
->fcp_lun
;
2346 * set depending on data direction:
2347 * data direction bits in SBALE (SB Type)
2348 * data direction bits in QTCB
2349 * data direction bits in FCP_CMND IU
2351 switch (scsi_cmnd
->sc_data_direction
) {
2353 req
->qtcb
->bottom
.io
.data_direction
= FSF_DATADIR_CMND
;
2354 sbtype
= SBAL_FLAGS0_TYPE_READ
;
2356 case DMA_FROM_DEVICE
:
2357 req
->qtcb
->bottom
.io
.data_direction
= FSF_DATADIR_READ
;
2358 sbtype
= SBAL_FLAGS0_TYPE_READ
;
2359 fcp_cmnd_iu
->rddata
= 1;
2362 req
->qtcb
->bottom
.io
.data_direction
= FSF_DATADIR_WRITE
;
2363 sbtype
= SBAL_FLAGS0_TYPE_WRITE
;
2364 fcp_cmnd_iu
->wddata
= 1;
2366 case DMA_BIDIRECTIONAL
:
2369 goto failed_scsi_cmnd
;
2372 if (likely((scsi_cmnd
->device
->simple_tags
) ||
2373 ((atomic_read(&unit
->status
) & ZFCP_STATUS_UNIT_READONLY
) &&
2374 (atomic_read(&unit
->status
) & ZFCP_STATUS_UNIT_SHARED
))))
2375 fcp_cmnd_iu
->task_attribute
= SIMPLE_Q
;
2377 fcp_cmnd_iu
->task_attribute
= UNTAGGED
;
2379 if (unlikely(scsi_cmnd
->cmd_len
> FCP_CDB_LENGTH
))
2380 fcp_cmnd_iu
->add_fcp_cdb_length
=
2381 (scsi_cmnd
->cmd_len
- FCP_CDB_LENGTH
) >> 2;
2383 memcpy(fcp_cmnd_iu
->fcp_cdb
, scsi_cmnd
->cmnd
, scsi_cmnd
->cmd_len
);
2385 req
->qtcb
->bottom
.io
.fcp_cmnd_length
= sizeof(struct fcp_cmnd_iu
) +
2386 fcp_cmnd_iu
->add_fcp_cdb_length
+ sizeof(u32
);
2388 real_bytes
= zfcp_qdio_sbals_from_sg(req
, sbtype
,
2389 scsi_sglist(scsi_cmnd
),
2390 FSF_MAX_SBALS_PER_REQ
);
2391 if (unlikely(real_bytes
< 0)) {
2392 if (req
->sbal_number
< FSF_MAX_SBALS_PER_REQ
)
2395 dev_err(&adapter
->ccw_device
->dev
,
2396 "Oversize data package, unit 0x%016Lx "
2397 "on port 0x%016Lx closed\n",
2398 (unsigned long long)unit
->fcp_lun
,
2399 (unsigned long long)unit
->port
->wwpn
);
2400 zfcp_erp_unit_shutdown(unit
, 0, 131, req
);
2403 goto failed_scsi_cmnd
;
2406 zfcp_set_fcp_dl(fcp_cmnd_iu
, real_bytes
);
2409 zfcp_fsf_start_timer(req
, ZFCP_FSF_REQUEST_TIMEOUT
);
2411 retval
= zfcp_fsf_req_send(req
);
2412 if (unlikely(retval
))
2413 goto failed_scsi_cmnd
;
2418 zfcp_unit_put(unit
);
2419 zfcp_fsf_req_free(req
);
2420 scsi_cmnd
->host_scribble
= NULL
;
2422 spin_unlock(&adapter
->req_q_lock
);
2427 * zfcp_fsf_send_fcp_ctm - send SCSI task management command
2428 * @adapter: pointer to struct zfcp-adapter
2429 * @unit: pointer to struct zfcp_unit
2430 * @tm_flags: unsigned byte for task management flags
2431 * @req_flags: int request flags
2432 * Returns: on success pointer to struct fsf_req, NULL otherwise
2434 struct zfcp_fsf_req
*zfcp_fsf_send_fcp_ctm(struct zfcp_adapter
*adapter
,
2435 struct zfcp_unit
*unit
,
2436 u8 tm_flags
, int req_flags
)
2438 struct qdio_buffer_element
*sbale
;
2439 struct zfcp_fsf_req
*req
= NULL
;
2440 struct fcp_cmnd_iu
*fcp_cmnd_iu
;
2442 if (unlikely(!(atomic_read(&unit
->status
) &
2443 ZFCP_STATUS_COMMON_UNBLOCKED
)))
2446 spin_lock(&adapter
->req_q_lock
);
2447 if (!zfcp_fsf_sbal_available(adapter
))
2449 req
= zfcp_fsf_req_create(adapter
, FSF_QTCB_FCP_CMND
, req_flags
,
2450 adapter
->pool
.fsf_req_scsi
);
2456 req
->status
|= ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT
;
2458 req
->handler
= zfcp_fsf_send_fcp_command_handler
;
2459 req
->qtcb
->header
.lun_handle
= unit
->handle
;
2460 req
->qtcb
->header
.port_handle
= unit
->port
->handle
;
2461 req
->qtcb
->bottom
.io
.data_direction
= FSF_DATADIR_CMND
;
2462 req
->qtcb
->bottom
.io
.service_class
= FSF_CLASS_3
;
2463 req
->qtcb
->bottom
.io
.fcp_cmnd_length
= sizeof(struct fcp_cmnd_iu
) +
2466 sbale
= zfcp_qdio_sbale_req(req
);
2467 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_WRITE
;
2468 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
2470 fcp_cmnd_iu
= (struct fcp_cmnd_iu
*) &req
->qtcb
->bottom
.io
.fcp_cmnd
;
2471 fcp_cmnd_iu
->fcp_lun
= unit
->fcp_lun
;
2472 fcp_cmnd_iu
->task_management_flags
= tm_flags
;
2474 zfcp_fsf_start_timer(req
, ZFCP_SCSI_ER_TIMEOUT
);
2475 if (!zfcp_fsf_req_send(req
))
2478 zfcp_fsf_req_free(req
);
2481 spin_unlock(&adapter
->req_q_lock
);
2485 static void zfcp_fsf_control_file_handler(struct zfcp_fsf_req
*req
)
2487 if (req
->qtcb
->header
.fsf_status
!= FSF_GOOD
)
2488 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
2492 * zfcp_fsf_control_file - control file upload/download
2493 * @adapter: pointer to struct zfcp_adapter
2494 * @fsf_cfdc: pointer to struct zfcp_fsf_cfdc
2495 * Returns: on success pointer to struct zfcp_fsf_req, NULL otherwise
2497 struct zfcp_fsf_req
*zfcp_fsf_control_file(struct zfcp_adapter
*adapter
,
2498 struct zfcp_fsf_cfdc
*fsf_cfdc
)
2500 struct qdio_buffer_element
*sbale
;
2501 struct zfcp_fsf_req
*req
= NULL
;
2502 struct fsf_qtcb_bottom_support
*bottom
;
2503 int direction
, retval
= -EIO
, bytes
;
2505 if (!(adapter
->adapter_features
& FSF_FEATURE_CFDC
))
2506 return ERR_PTR(-EOPNOTSUPP
);
2508 switch (fsf_cfdc
->command
) {
2509 case FSF_QTCB_DOWNLOAD_CONTROL_FILE
:
2510 direction
= SBAL_FLAGS0_TYPE_WRITE
;
2512 case FSF_QTCB_UPLOAD_CONTROL_FILE
:
2513 direction
= SBAL_FLAGS0_TYPE_READ
;
2516 return ERR_PTR(-EINVAL
);
2519 spin_lock_bh(&adapter
->req_q_lock
);
2520 if (zfcp_fsf_req_sbal_get(adapter
))
2523 req
= zfcp_fsf_req_create(adapter
, fsf_cfdc
->command
, 0, NULL
);
2529 req
->handler
= zfcp_fsf_control_file_handler
;
2531 sbale
= zfcp_qdio_sbale_req(req
);
2532 sbale
[0].flags
|= direction
;
2534 bottom
= &req
->qtcb
->bottom
.support
;
2535 bottom
->operation_subtype
= FSF_CFDC_OPERATION_SUBTYPE
;
2536 bottom
->option
= fsf_cfdc
->option
;
2538 bytes
= zfcp_qdio_sbals_from_sg(req
, direction
, fsf_cfdc
->sg
,
2539 FSF_MAX_SBALS_PER_REQ
);
2540 if (bytes
!= ZFCP_CFDC_MAX_SIZE
) {
2542 zfcp_fsf_req_free(req
);
2546 zfcp_fsf_start_timer(req
, ZFCP_FSF_REQUEST_TIMEOUT
);
2547 retval
= zfcp_fsf_req_send(req
);
2549 spin_unlock_bh(&adapter
->req_q_lock
);
2552 wait_event(req
->completion_wq
,
2553 req
->status
& ZFCP_STATUS_FSFREQ_COMPLETED
);
2556 return ERR_PTR(retval
);