4 * Implementation of FSF commands.
6 * Copyright IBM Corporation 2002, 2010
9 #define KMSG_COMPONENT "zfcp"
10 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
12 #include <linux/blktrace_api.h>
13 #include <linux/slab.h>
14 #include <scsi/fc/fc_els.h>
18 #include "zfcp_qdio.h"
19 #include "zfcp_reqlist.h"
21 static void zfcp_fsf_request_timeout_handler(unsigned long data
)
23 struct zfcp_adapter
*adapter
= (struct zfcp_adapter
*) data
;
24 zfcp_qdio_siosl(adapter
);
25 zfcp_erp_adapter_reopen(adapter
, ZFCP_STATUS_COMMON_ERP_FAILED
,
29 static void zfcp_fsf_start_timer(struct zfcp_fsf_req
*fsf_req
,
30 unsigned long timeout
)
32 fsf_req
->timer
.function
= zfcp_fsf_request_timeout_handler
;
33 fsf_req
->timer
.data
= (unsigned long) fsf_req
->adapter
;
34 fsf_req
->timer
.expires
= jiffies
+ timeout
;
35 add_timer(&fsf_req
->timer
);
38 static void zfcp_fsf_start_erp_timer(struct zfcp_fsf_req
*fsf_req
)
40 BUG_ON(!fsf_req
->erp_action
);
41 fsf_req
->timer
.function
= zfcp_erp_timeout_handler
;
42 fsf_req
->timer
.data
= (unsigned long) fsf_req
->erp_action
;
43 fsf_req
->timer
.expires
= jiffies
+ 30 * HZ
;
44 add_timer(&fsf_req
->timer
);
47 /* association between FSF command and FSF QTCB type */
48 static u32 fsf_qtcb_type
[] = {
49 [FSF_QTCB_FCP_CMND
] = FSF_IO_COMMAND
,
50 [FSF_QTCB_ABORT_FCP_CMND
] = FSF_SUPPORT_COMMAND
,
51 [FSF_QTCB_OPEN_PORT_WITH_DID
] = FSF_SUPPORT_COMMAND
,
52 [FSF_QTCB_OPEN_LUN
] = FSF_SUPPORT_COMMAND
,
53 [FSF_QTCB_CLOSE_LUN
] = FSF_SUPPORT_COMMAND
,
54 [FSF_QTCB_CLOSE_PORT
] = FSF_SUPPORT_COMMAND
,
55 [FSF_QTCB_CLOSE_PHYSICAL_PORT
] = FSF_SUPPORT_COMMAND
,
56 [FSF_QTCB_SEND_ELS
] = FSF_SUPPORT_COMMAND
,
57 [FSF_QTCB_SEND_GENERIC
] = FSF_SUPPORT_COMMAND
,
58 [FSF_QTCB_EXCHANGE_CONFIG_DATA
] = FSF_CONFIG_COMMAND
,
59 [FSF_QTCB_EXCHANGE_PORT_DATA
] = FSF_PORT_COMMAND
,
60 [FSF_QTCB_DOWNLOAD_CONTROL_FILE
] = FSF_SUPPORT_COMMAND
,
61 [FSF_QTCB_UPLOAD_CONTROL_FILE
] = FSF_SUPPORT_COMMAND
64 static void zfcp_fsf_class_not_supp(struct zfcp_fsf_req
*req
)
66 dev_err(&req
->adapter
->ccw_device
->dev
, "FCP device not "
67 "operational because of an unsupported FC class\n");
68 zfcp_erp_adapter_shutdown(req
->adapter
, 0, "fscns_1", req
);
69 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
73 * zfcp_fsf_req_free - free memory used by fsf request
74 * @fsf_req: pointer to struct zfcp_fsf_req
76 void zfcp_fsf_req_free(struct zfcp_fsf_req
*req
)
78 if (likely(req
->pool
)) {
79 if (likely(req
->qtcb
))
80 mempool_free(req
->qtcb
, req
->adapter
->pool
.qtcb_pool
);
81 mempool_free(req
, req
->pool
);
85 if (likely(req
->qtcb
))
86 kmem_cache_free(zfcp_data
.qtcb_cache
, req
->qtcb
);
90 static void zfcp_fsf_status_read_port_closed(struct zfcp_fsf_req
*req
)
93 struct fsf_status_read_buffer
*sr_buf
= req
->data
;
94 struct zfcp_adapter
*adapter
= req
->adapter
;
95 struct zfcp_port
*port
;
96 int d_id
= ntoh24(sr_buf
->d_id
);
98 read_lock_irqsave(&adapter
->port_list_lock
, flags
);
99 list_for_each_entry(port
, &adapter
->port_list
, list
)
100 if (port
->d_id
== d_id
) {
101 zfcp_erp_port_reopen(port
, 0, "fssrpc1", req
);
104 read_unlock_irqrestore(&adapter
->port_list_lock
, flags
);
107 static void zfcp_fsf_link_down_info_eval(struct zfcp_fsf_req
*req
,
108 struct fsf_link_down_info
*link_down
)
110 struct zfcp_adapter
*adapter
= req
->adapter
;
112 if (atomic_read(&adapter
->status
) & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED
)
115 atomic_set_mask(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED
, &adapter
->status
);
117 zfcp_scsi_schedule_rports_block(adapter
);
122 switch (link_down
->error_code
) {
123 case FSF_PSQ_LINK_NO_LIGHT
:
124 dev_warn(&req
->adapter
->ccw_device
->dev
,
125 "There is no light signal from the local "
126 "fibre channel cable\n");
128 case FSF_PSQ_LINK_WRAP_PLUG
:
129 dev_warn(&req
->adapter
->ccw_device
->dev
,
130 "There is a wrap plug instead of a fibre "
133 case FSF_PSQ_LINK_NO_FCP
:
134 dev_warn(&req
->adapter
->ccw_device
->dev
,
135 "The adjacent fibre channel node does not "
138 case FSF_PSQ_LINK_FIRMWARE_UPDATE
:
139 dev_warn(&req
->adapter
->ccw_device
->dev
,
140 "The FCP device is suspended because of a "
141 "firmware update\n");
143 case FSF_PSQ_LINK_INVALID_WWPN
:
144 dev_warn(&req
->adapter
->ccw_device
->dev
,
145 "The FCP device detected a WWPN that is "
146 "duplicate or not valid\n");
148 case FSF_PSQ_LINK_NO_NPIV_SUPPORT
:
149 dev_warn(&req
->adapter
->ccw_device
->dev
,
150 "The fibre channel fabric does not support NPIV\n");
152 case FSF_PSQ_LINK_NO_FCP_RESOURCES
:
153 dev_warn(&req
->adapter
->ccw_device
->dev
,
154 "The FCP adapter cannot support more NPIV ports\n");
156 case FSF_PSQ_LINK_NO_FABRIC_RESOURCES
:
157 dev_warn(&req
->adapter
->ccw_device
->dev
,
158 "The adjacent switch cannot support "
159 "more NPIV ports\n");
161 case FSF_PSQ_LINK_FABRIC_LOGIN_UNABLE
:
162 dev_warn(&req
->adapter
->ccw_device
->dev
,
163 "The FCP adapter could not log in to the "
164 "fibre channel fabric\n");
166 case FSF_PSQ_LINK_WWPN_ASSIGNMENT_CORRUPTED
:
167 dev_warn(&req
->adapter
->ccw_device
->dev
,
168 "The WWPN assignment file on the FCP adapter "
169 "has been damaged\n");
171 case FSF_PSQ_LINK_MODE_TABLE_CURRUPTED
:
172 dev_warn(&req
->adapter
->ccw_device
->dev
,
173 "The mode table on the FCP adapter "
174 "has been damaged\n");
176 case FSF_PSQ_LINK_NO_WWPN_ASSIGNMENT
:
177 dev_warn(&req
->adapter
->ccw_device
->dev
,
178 "All NPIV ports on the FCP adapter have "
182 dev_warn(&req
->adapter
->ccw_device
->dev
,
183 "The link between the FCP adapter and "
184 "the FC fabric is down\n");
187 zfcp_erp_set_adapter_status(adapter
, ZFCP_STATUS_COMMON_ERP_FAILED
);
190 static void zfcp_fsf_status_read_link_down(struct zfcp_fsf_req
*req
)
192 struct fsf_status_read_buffer
*sr_buf
= req
->data
;
193 struct fsf_link_down_info
*ldi
=
194 (struct fsf_link_down_info
*) &sr_buf
->payload
;
196 switch (sr_buf
->status_subtype
) {
197 case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK
:
198 zfcp_fsf_link_down_info_eval(req
, ldi
);
200 case FSF_STATUS_READ_SUB_FDISC_FAILED
:
201 zfcp_fsf_link_down_info_eval(req
, ldi
);
203 case FSF_STATUS_READ_SUB_FIRMWARE_UPDATE
:
204 zfcp_fsf_link_down_info_eval(req
, NULL
);
208 static void zfcp_fsf_status_read_handler(struct zfcp_fsf_req
*req
)
210 struct zfcp_adapter
*adapter
= req
->adapter
;
211 struct fsf_status_read_buffer
*sr_buf
= req
->data
;
213 if (req
->status
& ZFCP_STATUS_FSFREQ_DISMISSED
) {
214 zfcp_dbf_hba_fsf_unsol("dism", adapter
->dbf
, sr_buf
);
215 mempool_free(sr_buf
, adapter
->pool
.status_read_data
);
216 zfcp_fsf_req_free(req
);
220 zfcp_dbf_hba_fsf_unsol("read", adapter
->dbf
, sr_buf
);
222 switch (sr_buf
->status_type
) {
223 case FSF_STATUS_READ_PORT_CLOSED
:
224 zfcp_fsf_status_read_port_closed(req
);
226 case FSF_STATUS_READ_INCOMING_ELS
:
227 zfcp_fc_incoming_els(req
);
229 case FSF_STATUS_READ_SENSE_DATA_AVAIL
:
231 case FSF_STATUS_READ_BIT_ERROR_THRESHOLD
:
232 dev_warn(&adapter
->ccw_device
->dev
,
233 "The error threshold for checksum statistics "
234 "has been exceeded\n");
235 zfcp_dbf_hba_berr(adapter
->dbf
, req
);
237 case FSF_STATUS_READ_LINK_DOWN
:
238 zfcp_fsf_status_read_link_down(req
);
239 zfcp_fc_enqueue_event(adapter
, FCH_EVT_LINKDOWN
, 0);
241 case FSF_STATUS_READ_LINK_UP
:
242 dev_info(&adapter
->ccw_device
->dev
,
243 "The local link has been restored\n");
244 /* All ports should be marked as ready to run again */
245 zfcp_erp_set_adapter_status(adapter
,
246 ZFCP_STATUS_COMMON_RUNNING
);
247 zfcp_erp_adapter_reopen(adapter
,
248 ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED
|
249 ZFCP_STATUS_COMMON_ERP_FAILED
,
251 zfcp_fc_enqueue_event(adapter
, FCH_EVT_LINKUP
, 0);
254 case FSF_STATUS_READ_NOTIFICATION_LOST
:
255 if (sr_buf
->status_subtype
& FSF_STATUS_READ_SUB_ACT_UPDATED
)
256 zfcp_cfdc_adapter_access_changed(adapter
);
257 if (sr_buf
->status_subtype
& FSF_STATUS_READ_SUB_INCOMING_ELS
)
258 queue_work(adapter
->work_queue
, &adapter
->scan_work
);
260 case FSF_STATUS_READ_CFDC_UPDATED
:
261 zfcp_cfdc_adapter_access_changed(adapter
);
263 case FSF_STATUS_READ_FEATURE_UPDATE_ALERT
:
264 adapter
->adapter_features
= sr_buf
->payload
.word
[0];
268 mempool_free(sr_buf
, adapter
->pool
.status_read_data
);
269 zfcp_fsf_req_free(req
);
271 atomic_inc(&adapter
->stat_miss
);
272 queue_work(adapter
->work_queue
, &adapter
->stat_work
);
275 static void zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req
*req
)
277 switch (req
->qtcb
->header
.fsf_status_qual
.word
[0]) {
278 case FSF_SQ_FCP_RSP_AVAILABLE
:
279 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE
:
280 case FSF_SQ_NO_RETRY_POSSIBLE
:
281 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED
:
283 case FSF_SQ_COMMAND_ABORTED
:
285 case FSF_SQ_NO_RECOM
:
286 dev_err(&req
->adapter
->ccw_device
->dev
,
287 "The FCP adapter reported a problem "
288 "that cannot be recovered\n");
289 zfcp_qdio_siosl(req
->adapter
);
290 zfcp_erp_adapter_shutdown(req
->adapter
, 0, "fsfsqe1", req
);
293 /* all non-return stats set FSFREQ_ERROR*/
294 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
297 static void zfcp_fsf_fsfstatus_eval(struct zfcp_fsf_req
*req
)
299 if (unlikely(req
->status
& ZFCP_STATUS_FSFREQ_ERROR
))
302 switch (req
->qtcb
->header
.fsf_status
) {
303 case FSF_UNKNOWN_COMMAND
:
304 dev_err(&req
->adapter
->ccw_device
->dev
,
305 "The FCP adapter does not recognize the command 0x%x\n",
306 req
->qtcb
->header
.fsf_command
);
307 zfcp_erp_adapter_shutdown(req
->adapter
, 0, "fsfse_1", req
);
308 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
310 case FSF_ADAPTER_STATUS_AVAILABLE
:
311 zfcp_fsf_fsfstatus_qual_eval(req
);
316 static void zfcp_fsf_protstatus_eval(struct zfcp_fsf_req
*req
)
318 struct zfcp_adapter
*adapter
= req
->adapter
;
319 struct fsf_qtcb
*qtcb
= req
->qtcb
;
320 union fsf_prot_status_qual
*psq
= &qtcb
->prefix
.prot_status_qual
;
322 zfcp_dbf_hba_fsf_response(req
);
324 if (req
->status
& ZFCP_STATUS_FSFREQ_DISMISSED
) {
325 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
329 switch (qtcb
->prefix
.prot_status
) {
331 case FSF_PROT_FSF_STATUS_PRESENTED
:
333 case FSF_PROT_QTCB_VERSION_ERROR
:
334 dev_err(&adapter
->ccw_device
->dev
,
335 "QTCB version 0x%x not supported by FCP adapter "
336 "(0x%x to 0x%x)\n", FSF_QTCB_CURRENT_VERSION
,
337 psq
->word
[0], psq
->word
[1]);
338 zfcp_erp_adapter_shutdown(adapter
, 0, "fspse_1", req
);
340 case FSF_PROT_ERROR_STATE
:
341 case FSF_PROT_SEQ_NUMB_ERROR
:
342 zfcp_erp_adapter_reopen(adapter
, 0, "fspse_2", req
);
343 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
345 case FSF_PROT_UNSUPP_QTCB_TYPE
:
346 dev_err(&adapter
->ccw_device
->dev
,
347 "The QTCB type is not supported by the FCP adapter\n");
348 zfcp_erp_adapter_shutdown(adapter
, 0, "fspse_3", req
);
350 case FSF_PROT_HOST_CONNECTION_INITIALIZING
:
351 atomic_set_mask(ZFCP_STATUS_ADAPTER_HOST_CON_INIT
,
354 case FSF_PROT_DUPLICATE_REQUEST_ID
:
355 dev_err(&adapter
->ccw_device
->dev
,
356 "0x%Lx is an ambiguous request identifier\n",
357 (unsigned long long)qtcb
->bottom
.support
.req_handle
);
358 zfcp_erp_adapter_shutdown(adapter
, 0, "fspse_4", req
);
360 case FSF_PROT_LINK_DOWN
:
361 zfcp_fsf_link_down_info_eval(req
, &psq
->link_down_info
);
362 /* go through reopen to flush pending requests */
363 zfcp_erp_adapter_reopen(adapter
, 0, "fspse_6", req
);
365 case FSF_PROT_REEST_QUEUE
:
366 /* All ports should be marked as ready to run again */
367 zfcp_erp_set_adapter_status(adapter
,
368 ZFCP_STATUS_COMMON_RUNNING
);
369 zfcp_erp_adapter_reopen(adapter
,
370 ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED
|
371 ZFCP_STATUS_COMMON_ERP_FAILED
,
375 dev_err(&adapter
->ccw_device
->dev
,
376 "0x%x is not a valid transfer protocol status\n",
377 qtcb
->prefix
.prot_status
);
378 zfcp_qdio_siosl(adapter
);
379 zfcp_erp_adapter_shutdown(adapter
, 0, "fspse_9", req
);
381 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
385 * zfcp_fsf_req_complete - process completion of a FSF request
386 * @fsf_req: The FSF request that has been completed.
388 * When a request has been completed either from the FCP adapter,
389 * or it has been dismissed due to a queue shutdown, this function
390 * is called to process the completion status and trigger further
391 * events related to the FSF request.
393 static void zfcp_fsf_req_complete(struct zfcp_fsf_req
*req
)
395 if (unlikely(req
->fsf_command
== FSF_QTCB_UNSOLICITED_STATUS
)) {
396 zfcp_fsf_status_read_handler(req
);
400 del_timer(&req
->timer
);
401 zfcp_fsf_protstatus_eval(req
);
402 zfcp_fsf_fsfstatus_eval(req
);
406 zfcp_erp_notify(req
->erp_action
, 0);
408 if (likely(req
->status
& ZFCP_STATUS_FSFREQ_CLEANUP
))
409 zfcp_fsf_req_free(req
);
411 complete(&req
->completion
);
415 * zfcp_fsf_req_dismiss_all - dismiss all fsf requests
416 * @adapter: pointer to struct zfcp_adapter
418 * Never ever call this without shutting down the adapter first.
419 * Otherwise the adapter would continue using and corrupting s390 storage.
420 * Included BUG_ON() call to ensure this is done.
421 * ERP is supposed to be the only user of this function.
423 void zfcp_fsf_req_dismiss_all(struct zfcp_adapter
*adapter
)
425 struct zfcp_fsf_req
*req
, *tmp
;
426 LIST_HEAD(remove_queue
);
428 BUG_ON(atomic_read(&adapter
->status
) & ZFCP_STATUS_ADAPTER_QDIOUP
);
429 zfcp_reqlist_move(adapter
->req_list
, &remove_queue
);
431 list_for_each_entry_safe(req
, tmp
, &remove_queue
, list
) {
432 list_del(&req
->list
);
433 req
->status
|= ZFCP_STATUS_FSFREQ_DISMISSED
;
434 zfcp_fsf_req_complete(req
);
438 static int zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req
*req
)
440 struct fsf_qtcb_bottom_config
*bottom
= &req
->qtcb
->bottom
.config
;
441 struct zfcp_adapter
*adapter
= req
->adapter
;
442 struct Scsi_Host
*shost
= adapter
->scsi_host
;
443 struct fc_els_flogi
*nsp
, *plogi
;
445 /* adjust pointers for missing command code */
446 nsp
= (struct fc_els_flogi
*) ((u8
*)&bottom
->nport_serv_param
448 plogi
= (struct fc_els_flogi
*) ((u8
*)&bottom
->plogi_payload
452 memcpy(req
->data
, bottom
, sizeof(*bottom
));
454 fc_host_port_name(shost
) = nsp
->fl_wwpn
;
455 fc_host_node_name(shost
) = nsp
->fl_wwnn
;
456 fc_host_port_id(shost
) = ntoh24(bottom
->s_id
);
457 fc_host_speed(shost
) = bottom
->fc_link_speed
;
458 fc_host_supported_classes(shost
) = FC_COS_CLASS2
| FC_COS_CLASS3
;
460 adapter
->hydra_version
= bottom
->adapter_type
;
461 adapter
->timer_ticks
= bottom
->timer_interval
& ZFCP_FSF_TIMER_INT_MASK
;
462 adapter
->stat_read_buf_num
= max(bottom
->status_read_buf_num
,
463 (u16
)FSF_STATUS_READS_RECOM
);
465 if (fc_host_permanent_port_name(shost
) == -1)
466 fc_host_permanent_port_name(shost
) = fc_host_port_name(shost
);
468 switch (bottom
->fc_topology
) {
470 adapter
->peer_d_id
= ntoh24(bottom
->peer_d_id
);
471 adapter
->peer_wwpn
= plogi
->fl_wwpn
;
472 adapter
->peer_wwnn
= plogi
->fl_wwnn
;
473 fc_host_port_type(shost
) = FC_PORTTYPE_PTP
;
475 case FSF_TOPO_FABRIC
:
476 fc_host_port_type(shost
) = FC_PORTTYPE_NPORT
;
479 fc_host_port_type(shost
) = FC_PORTTYPE_NLPORT
;
482 dev_err(&adapter
->ccw_device
->dev
,
483 "Unknown or unsupported arbitrated loop "
484 "fibre channel topology detected\n");
485 zfcp_erp_adapter_shutdown(adapter
, 0, "fsece_1", req
);
489 zfcp_scsi_set_prot(adapter
);
494 static void zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req
*req
)
496 struct zfcp_adapter
*adapter
= req
->adapter
;
497 struct fsf_qtcb
*qtcb
= req
->qtcb
;
498 struct fsf_qtcb_bottom_config
*bottom
= &qtcb
->bottom
.config
;
499 struct Scsi_Host
*shost
= adapter
->scsi_host
;
501 if (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)
504 adapter
->fsf_lic_version
= bottom
->lic_version
;
505 adapter
->adapter_features
= bottom
->adapter_features
;
506 adapter
->connection_features
= bottom
->connection_features
;
507 adapter
->peer_wwpn
= 0;
508 adapter
->peer_wwnn
= 0;
509 adapter
->peer_d_id
= 0;
511 switch (qtcb
->header
.fsf_status
) {
513 if (zfcp_fsf_exchange_config_evaluate(req
))
516 if (bottom
->max_qtcb_size
< sizeof(struct fsf_qtcb
)) {
517 dev_err(&adapter
->ccw_device
->dev
,
518 "FCP adapter maximum QTCB size (%d bytes) "
520 bottom
->max_qtcb_size
);
521 zfcp_erp_adapter_shutdown(adapter
, 0, "fsecdh1", req
);
524 atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK
,
527 case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE
:
528 fc_host_node_name(shost
) = 0;
529 fc_host_port_name(shost
) = 0;
530 fc_host_port_id(shost
) = 0;
531 fc_host_speed(shost
) = FC_PORTSPEED_UNKNOWN
;
532 fc_host_port_type(shost
) = FC_PORTTYPE_UNKNOWN
;
533 adapter
->hydra_version
= 0;
535 zfcp_fsf_link_down_info_eval(req
,
536 &qtcb
->header
.fsf_status_qual
.link_down_info
);
539 zfcp_erp_adapter_shutdown(adapter
, 0, "fsecdh3", req
);
543 if (adapter
->adapter_features
& FSF_FEATURE_HBAAPI_MANAGEMENT
) {
544 adapter
->hardware_version
= bottom
->hardware_version
;
545 memcpy(fc_host_serial_number(shost
), bottom
->serial_number
,
546 min(FC_SERIAL_NUMBER_SIZE
, 17));
547 EBCASC(fc_host_serial_number(shost
),
548 min(FC_SERIAL_NUMBER_SIZE
, 17));
551 if (FSF_QTCB_CURRENT_VERSION
< bottom
->low_qtcb_version
) {
552 dev_err(&adapter
->ccw_device
->dev
,
553 "The FCP adapter only supports newer "
554 "control block versions\n");
555 zfcp_erp_adapter_shutdown(adapter
, 0, "fsecdh4", req
);
558 if (FSF_QTCB_CURRENT_VERSION
> bottom
->high_qtcb_version
) {
559 dev_err(&adapter
->ccw_device
->dev
,
560 "The FCP adapter only supports older "
561 "control block versions\n");
562 zfcp_erp_adapter_shutdown(adapter
, 0, "fsecdh5", req
);
566 static void zfcp_fsf_exchange_port_evaluate(struct zfcp_fsf_req
*req
)
568 struct zfcp_adapter
*adapter
= req
->adapter
;
569 struct fsf_qtcb_bottom_port
*bottom
= &req
->qtcb
->bottom
.port
;
570 struct Scsi_Host
*shost
= adapter
->scsi_host
;
573 memcpy(req
->data
, bottom
, sizeof(*bottom
));
575 if (adapter
->connection_features
& FSF_FEATURE_NPIV_MODE
) {
576 fc_host_permanent_port_name(shost
) = bottom
->wwpn
;
577 fc_host_port_type(shost
) = FC_PORTTYPE_NPIV
;
579 fc_host_permanent_port_name(shost
) = fc_host_port_name(shost
);
580 fc_host_maxframe_size(shost
) = bottom
->maximum_frame_size
;
581 fc_host_supported_speeds(shost
) = bottom
->supported_speed
;
582 memcpy(fc_host_supported_fc4s(shost
), bottom
->supported_fc4_types
,
584 memcpy(fc_host_active_fc4s(shost
), bottom
->active_fc4_types
,
588 static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req
*req
)
590 struct fsf_qtcb
*qtcb
= req
->qtcb
;
592 if (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)
595 switch (qtcb
->header
.fsf_status
) {
597 zfcp_fsf_exchange_port_evaluate(req
);
599 case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE
:
600 zfcp_fsf_exchange_port_evaluate(req
);
601 zfcp_fsf_link_down_info_eval(req
,
602 &qtcb
->header
.fsf_status_qual
.link_down_info
);
607 static struct zfcp_fsf_req
*zfcp_fsf_alloc(mempool_t
*pool
)
609 struct zfcp_fsf_req
*req
;
612 req
= mempool_alloc(pool
, GFP_ATOMIC
);
614 req
= kmalloc(sizeof(*req
), GFP_ATOMIC
);
619 memset(req
, 0, sizeof(*req
));
624 static struct fsf_qtcb
*zfcp_qtcb_alloc(mempool_t
*pool
)
626 struct fsf_qtcb
*qtcb
;
629 qtcb
= mempool_alloc(pool
, GFP_ATOMIC
);
631 qtcb
= kmem_cache_alloc(zfcp_data
.qtcb_cache
, GFP_ATOMIC
);
636 memset(qtcb
, 0, sizeof(*qtcb
));
640 static struct zfcp_fsf_req
*zfcp_fsf_req_create(struct zfcp_qdio
*qdio
,
641 u32 fsf_cmd
, u32 sbtype
,
644 struct zfcp_adapter
*adapter
= qdio
->adapter
;
645 struct zfcp_fsf_req
*req
= zfcp_fsf_alloc(pool
);
648 return ERR_PTR(-ENOMEM
);
650 if (adapter
->req_no
== 0)
653 INIT_LIST_HEAD(&req
->list
);
654 init_timer(&req
->timer
);
655 init_completion(&req
->completion
);
657 req
->adapter
= adapter
;
658 req
->fsf_command
= fsf_cmd
;
659 req
->req_id
= adapter
->req_no
;
661 if (likely(fsf_cmd
!= FSF_QTCB_UNSOLICITED_STATUS
)) {
663 req
->qtcb
= zfcp_qtcb_alloc(adapter
->pool
.qtcb_pool
);
665 req
->qtcb
= zfcp_qtcb_alloc(NULL
);
667 if (unlikely(!req
->qtcb
)) {
668 zfcp_fsf_req_free(req
);
669 return ERR_PTR(-ENOMEM
);
672 req
->seq_no
= adapter
->fsf_req_seq_no
;
673 req
->qtcb
->prefix
.req_seq_no
= adapter
->fsf_req_seq_no
;
674 req
->qtcb
->prefix
.req_id
= req
->req_id
;
675 req
->qtcb
->prefix
.ulp_info
= 26;
676 req
->qtcb
->prefix
.qtcb_type
= fsf_qtcb_type
[req
->fsf_command
];
677 req
->qtcb
->prefix
.qtcb_version
= FSF_QTCB_CURRENT_VERSION
;
678 req
->qtcb
->header
.req_handle
= req
->req_id
;
679 req
->qtcb
->header
.fsf_command
= req
->fsf_command
;
682 zfcp_qdio_req_init(adapter
->qdio
, &req
->qdio_req
, req
->req_id
, sbtype
,
683 req
->qtcb
, sizeof(struct fsf_qtcb
));
688 static int zfcp_fsf_req_send(struct zfcp_fsf_req
*req
)
690 struct zfcp_adapter
*adapter
= req
->adapter
;
691 struct zfcp_qdio
*qdio
= adapter
->qdio
;
692 int with_qtcb
= (req
->qtcb
!= NULL
);
693 int req_id
= req
->req_id
;
695 zfcp_reqlist_add(adapter
->req_list
, req
);
697 req
->qdio_req
.qdio_outb_usage
= atomic_read(&qdio
->req_q_free
);
698 req
->issued
= get_clock();
699 if (zfcp_qdio_send(qdio
, &req
->qdio_req
)) {
700 del_timer(&req
->timer
);
701 /* lookup request again, list might have changed */
702 zfcp_reqlist_find_rm(adapter
->req_list
, req_id
);
703 zfcp_erp_adapter_reopen(adapter
, 0, "fsrs__1", req
);
707 /* Don't increase for unsolicited status */
709 adapter
->fsf_req_seq_no
++;
716 * zfcp_fsf_status_read - send status read request
717 * @adapter: pointer to struct zfcp_adapter
718 * @req_flags: request flags
719 * Returns: 0 on success, ERROR otherwise
721 int zfcp_fsf_status_read(struct zfcp_qdio
*qdio
)
723 struct zfcp_adapter
*adapter
= qdio
->adapter
;
724 struct zfcp_fsf_req
*req
;
725 struct fsf_status_read_buffer
*sr_buf
;
728 spin_lock_irq(&qdio
->req_q_lock
);
729 if (zfcp_qdio_sbal_get(qdio
))
732 req
= zfcp_fsf_req_create(qdio
, FSF_QTCB_UNSOLICITED_STATUS
, 0,
733 adapter
->pool
.status_read_req
);
735 retval
= PTR_ERR(req
);
739 sr_buf
= mempool_alloc(adapter
->pool
.status_read_data
, GFP_ATOMIC
);
744 memset(sr_buf
, 0, sizeof(*sr_buf
));
747 zfcp_qdio_fill_next(qdio
, &req
->qdio_req
, sr_buf
, sizeof(*sr_buf
));
748 zfcp_qdio_set_sbale_last(qdio
, &req
->qdio_req
);
750 retval
= zfcp_fsf_req_send(req
);
752 goto failed_req_send
;
757 mempool_free(sr_buf
, adapter
->pool
.status_read_data
);
759 zfcp_fsf_req_free(req
);
760 zfcp_dbf_hba_fsf_unsol("fail", adapter
->dbf
, NULL
);
762 spin_unlock_irq(&qdio
->req_q_lock
);
766 static void zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req
*req
)
768 struct scsi_device
*sdev
= req
->data
;
769 struct zfcp_scsi_dev
*zfcp_sdev
= sdev_to_zfcp(sdev
);
770 union fsf_status_qual
*fsq
= &req
->qtcb
->header
.fsf_status_qual
;
772 if (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)
775 switch (req
->qtcb
->header
.fsf_status
) {
776 case FSF_PORT_HANDLE_NOT_VALID
:
777 if (fsq
->word
[0] == fsq
->word
[1]) {
778 zfcp_erp_adapter_reopen(zfcp_sdev
->port
->adapter
, 0,
780 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
783 case FSF_LUN_HANDLE_NOT_VALID
:
784 if (fsq
->word
[0] == fsq
->word
[1]) {
785 zfcp_erp_port_reopen(zfcp_sdev
->port
, 0, "fsafch2",
787 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
790 case FSF_FCP_COMMAND_DOES_NOT_EXIST
:
791 req
->status
|= ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED
;
794 zfcp_erp_set_port_status(zfcp_sdev
->port
,
795 ZFCP_STATUS_COMMON_ACCESS_BOXED
);
796 zfcp_erp_port_reopen(zfcp_sdev
->port
,
797 ZFCP_STATUS_COMMON_ERP_FAILED
, "fsafch3",
799 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
802 zfcp_erp_set_lun_status(sdev
, ZFCP_STATUS_COMMON_ACCESS_BOXED
);
803 zfcp_erp_lun_reopen(sdev
, ZFCP_STATUS_COMMON_ERP_FAILED
,
805 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
807 case FSF_ADAPTER_STATUS_AVAILABLE
:
808 switch (fsq
->word
[0]) {
809 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE
:
810 zfcp_fc_test_link(zfcp_sdev
->port
);
812 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED
:
813 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
818 req
->status
|= ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED
;
824 * zfcp_fsf_abort_fcp_cmnd - abort running SCSI command
825 * @scmnd: The SCSI command to abort
826 * Returns: pointer to struct zfcp_fsf_req
829 struct zfcp_fsf_req
*zfcp_fsf_abort_fcp_cmnd(struct scsi_cmnd
*scmnd
)
831 struct zfcp_fsf_req
*req
= NULL
;
832 struct scsi_device
*sdev
= scmnd
->device
;
833 struct zfcp_scsi_dev
*zfcp_sdev
= sdev_to_zfcp(sdev
);
834 struct zfcp_qdio
*qdio
= zfcp_sdev
->port
->adapter
->qdio
;
835 unsigned long old_req_id
= (unsigned long) scmnd
->host_scribble
;
837 spin_lock_irq(&qdio
->req_q_lock
);
838 if (zfcp_qdio_sbal_get(qdio
))
840 req
= zfcp_fsf_req_create(qdio
, FSF_QTCB_ABORT_FCP_CMND
,
841 SBAL_FLAGS0_TYPE_READ
,
842 qdio
->adapter
->pool
.scsi_abort
);
848 if (unlikely(!(atomic_read(&zfcp_sdev
->status
) &
849 ZFCP_STATUS_COMMON_UNBLOCKED
)))
852 zfcp_qdio_set_sbale_last(qdio
, &req
->qdio_req
);
854 req
->data
= zfcp_sdev
;
855 req
->handler
= zfcp_fsf_abort_fcp_command_handler
;
856 req
->qtcb
->header
.lun_handle
= zfcp_sdev
->lun_handle
;
857 req
->qtcb
->header
.port_handle
= zfcp_sdev
->port
->handle
;
858 req
->qtcb
->bottom
.support
.req_handle
= (u64
) old_req_id
;
860 zfcp_fsf_start_timer(req
, ZFCP_SCSI_ER_TIMEOUT
);
861 if (!zfcp_fsf_req_send(req
))
865 zfcp_fsf_req_free(req
);
868 spin_unlock_irq(&qdio
->req_q_lock
);
872 static void zfcp_fsf_send_ct_handler(struct zfcp_fsf_req
*req
)
874 struct zfcp_adapter
*adapter
= req
->adapter
;
875 struct zfcp_fsf_ct_els
*ct
= req
->data
;
876 struct fsf_qtcb_header
*header
= &req
->qtcb
->header
;
878 ct
->status
= -EINVAL
;
880 if (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)
883 switch (header
->fsf_status
) {
885 zfcp_dbf_san_ct_response(req
);
888 case FSF_SERVICE_CLASS_NOT_SUPPORTED
:
889 zfcp_fsf_class_not_supp(req
);
891 case FSF_ADAPTER_STATUS_AVAILABLE
:
892 switch (header
->fsf_status_qual
.word
[0]){
893 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE
:
894 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED
:
895 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
899 case FSF_ACCESS_DENIED
:
902 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
904 case FSF_PORT_HANDLE_NOT_VALID
:
905 zfcp_erp_adapter_reopen(adapter
, 0, "fsscth1", req
);
907 case FSF_GENERIC_COMMAND_REJECTED
:
908 case FSF_PAYLOAD_SIZE_MISMATCH
:
909 case FSF_REQUEST_SIZE_TOO_LARGE
:
910 case FSF_RESPONSE_SIZE_TOO_LARGE
:
911 case FSF_SBAL_MISMATCH
:
912 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
918 ct
->handler(ct
->handler_data
);
921 static void zfcp_fsf_setup_ct_els_unchained(struct zfcp_qdio
*qdio
,
922 struct zfcp_qdio_req
*q_req
,
923 struct scatterlist
*sg_req
,
924 struct scatterlist
*sg_resp
)
926 zfcp_qdio_fill_next(qdio
, q_req
, sg_virt(sg_req
), sg_req
->length
);
927 zfcp_qdio_fill_next(qdio
, q_req
, sg_virt(sg_resp
), sg_resp
->length
);
928 zfcp_qdio_set_sbale_last(qdio
, q_req
);
931 static int zfcp_fsf_setup_ct_els_sbals(struct zfcp_fsf_req
*req
,
932 struct scatterlist
*sg_req
,
933 struct scatterlist
*sg_resp
)
935 struct zfcp_adapter
*adapter
= req
->adapter
;
936 u32 feat
= adapter
->adapter_features
;
939 if (!(feat
& FSF_FEATURE_ELS_CT_CHAINED_SBALS
)) {
940 if (!zfcp_qdio_sg_one_sbale(sg_req
) ||
941 !zfcp_qdio_sg_one_sbale(sg_resp
))
944 zfcp_fsf_setup_ct_els_unchained(adapter
->qdio
, &req
->qdio_req
,
949 /* use single, unchained SBAL if it can hold the request */
950 if (zfcp_qdio_sg_one_sbale(sg_req
) && zfcp_qdio_sg_one_sbale(sg_resp
)) {
951 zfcp_fsf_setup_ct_els_unchained(adapter
->qdio
, &req
->qdio_req
,
956 bytes
= zfcp_qdio_sbals_from_sg(adapter
->qdio
, &req
->qdio_req
, sg_req
);
959 zfcp_qdio_set_sbale_last(adapter
->qdio
, &req
->qdio_req
);
960 req
->qtcb
->bottom
.support
.req_buf_length
= bytes
;
961 zfcp_qdio_skip_to_last_sbale(&req
->qdio_req
);
963 bytes
= zfcp_qdio_sbals_from_sg(adapter
->qdio
, &req
->qdio_req
,
965 req
->qtcb
->bottom
.support
.resp_buf_length
= bytes
;
968 zfcp_qdio_set_sbale_last(adapter
->qdio
, &req
->qdio_req
);
973 static int zfcp_fsf_setup_ct_els(struct zfcp_fsf_req
*req
,
974 struct scatterlist
*sg_req
,
975 struct scatterlist
*sg_resp
,
976 unsigned int timeout
)
980 ret
= zfcp_fsf_setup_ct_els_sbals(req
, sg_req
, sg_resp
);
984 /* common settings for ct/gs and els requests */
986 timeout
= 255; /* max value accepted by hardware */
987 req
->qtcb
->bottom
.support
.service_class
= FSF_CLASS_3
;
988 req
->qtcb
->bottom
.support
.timeout
= timeout
;
989 zfcp_fsf_start_timer(req
, (timeout
+ 10) * HZ
);
995 * zfcp_fsf_send_ct - initiate a Generic Service request (FC-GS)
996 * @ct: pointer to struct zfcp_send_ct with data for request
997 * @pool: if non-null this mempool is used to allocate struct zfcp_fsf_req
999 int zfcp_fsf_send_ct(struct zfcp_fc_wka_port
*wka_port
,
1000 struct zfcp_fsf_ct_els
*ct
, mempool_t
*pool
,
1001 unsigned int timeout
)
1003 struct zfcp_qdio
*qdio
= wka_port
->adapter
->qdio
;
1004 struct zfcp_fsf_req
*req
;
1007 spin_lock_irq(&qdio
->req_q_lock
);
1008 if (zfcp_qdio_sbal_get(qdio
))
1011 req
= zfcp_fsf_req_create(qdio
, FSF_QTCB_SEND_GENERIC
,
1012 SBAL_FLAGS0_TYPE_WRITE_READ
, pool
);
1019 req
->status
|= ZFCP_STATUS_FSFREQ_CLEANUP
;
1020 ret
= zfcp_fsf_setup_ct_els(req
, ct
->req
, ct
->resp
, timeout
);
1024 req
->handler
= zfcp_fsf_send_ct_handler
;
1025 req
->qtcb
->header
.port_handle
= wka_port
->handle
;
1028 zfcp_dbf_san_ct_request(req
, wka_port
->d_id
);
1030 ret
= zfcp_fsf_req_send(req
);
1037 zfcp_fsf_req_free(req
);
1039 spin_unlock_irq(&qdio
->req_q_lock
);
1043 static void zfcp_fsf_send_els_handler(struct zfcp_fsf_req
*req
)
1045 struct zfcp_fsf_ct_els
*send_els
= req
->data
;
1046 struct zfcp_port
*port
= send_els
->port
;
1047 struct fsf_qtcb_header
*header
= &req
->qtcb
->header
;
1049 send_els
->status
= -EINVAL
;
1051 if (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)
1052 goto skip_fsfstatus
;
1054 switch (header
->fsf_status
) {
1056 zfcp_dbf_san_els_response(req
);
1057 send_els
->status
= 0;
1059 case FSF_SERVICE_CLASS_NOT_SUPPORTED
:
1060 zfcp_fsf_class_not_supp(req
);
1062 case FSF_ADAPTER_STATUS_AVAILABLE
:
1063 switch (header
->fsf_status_qual
.word
[0]){
1064 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE
:
1065 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED
:
1066 case FSF_SQ_RETRY_IF_POSSIBLE
:
1067 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1071 case FSF_ELS_COMMAND_REJECTED
:
1072 case FSF_PAYLOAD_SIZE_MISMATCH
:
1073 case FSF_REQUEST_SIZE_TOO_LARGE
:
1074 case FSF_RESPONSE_SIZE_TOO_LARGE
:
1076 case FSF_ACCESS_DENIED
:
1078 zfcp_cfdc_port_denied(port
, &header
->fsf_status_qual
);
1079 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1082 case FSF_SBAL_MISMATCH
:
1083 /* should never occure, avoided in zfcp_fsf_send_els */
1086 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1090 if (send_els
->handler
)
1091 send_els
->handler(send_els
->handler_data
);
1095 * zfcp_fsf_send_els - initiate an ELS command (FC-FS)
1096 * @els: pointer to struct zfcp_send_els with data for the command
1098 int zfcp_fsf_send_els(struct zfcp_adapter
*adapter
, u32 d_id
,
1099 struct zfcp_fsf_ct_els
*els
, unsigned int timeout
)
1101 struct zfcp_fsf_req
*req
;
1102 struct zfcp_qdio
*qdio
= adapter
->qdio
;
1105 spin_lock_irq(&qdio
->req_q_lock
);
1106 if (zfcp_qdio_sbal_get(qdio
))
1109 req
= zfcp_fsf_req_create(qdio
, FSF_QTCB_SEND_ELS
,
1110 SBAL_FLAGS0_TYPE_WRITE_READ
, NULL
);
1117 req
->status
|= ZFCP_STATUS_FSFREQ_CLEANUP
;
1119 zfcp_qdio_sbal_limit(qdio
, &req
->qdio_req
, 2);
1121 ret
= zfcp_fsf_setup_ct_els(req
, els
->req
, els
->resp
, timeout
);
1126 hton24(req
->qtcb
->bottom
.support
.d_id
, d_id
);
1127 req
->handler
= zfcp_fsf_send_els_handler
;
1130 zfcp_dbf_san_els_request(req
);
1132 ret
= zfcp_fsf_req_send(req
);
1139 zfcp_fsf_req_free(req
);
1141 spin_unlock_irq(&qdio
->req_q_lock
);
1145 int zfcp_fsf_exchange_config_data(struct zfcp_erp_action
*erp_action
)
1147 struct zfcp_fsf_req
*req
;
1148 struct zfcp_qdio
*qdio
= erp_action
->adapter
->qdio
;
1151 spin_lock_irq(&qdio
->req_q_lock
);
1152 if (zfcp_qdio_sbal_get(qdio
))
1155 req
= zfcp_fsf_req_create(qdio
, FSF_QTCB_EXCHANGE_CONFIG_DATA
,
1156 SBAL_FLAGS0_TYPE_READ
,
1157 qdio
->adapter
->pool
.erp_req
);
1160 retval
= PTR_ERR(req
);
1164 req
->status
|= ZFCP_STATUS_FSFREQ_CLEANUP
;
1165 zfcp_qdio_set_sbale_last(qdio
, &req
->qdio_req
);
1167 req
->qtcb
->bottom
.config
.feature_selection
=
1169 FSF_FEATURE_LUN_SHARING
|
1170 FSF_FEATURE_NOTIFICATION_LOST
|
1171 FSF_FEATURE_UPDATE_ALERT
;
1172 req
->erp_action
= erp_action
;
1173 req
->handler
= zfcp_fsf_exchange_config_data_handler
;
1174 erp_action
->fsf_req_id
= req
->req_id
;
1176 zfcp_fsf_start_erp_timer(req
);
1177 retval
= zfcp_fsf_req_send(req
);
1179 zfcp_fsf_req_free(req
);
1180 erp_action
->fsf_req_id
= 0;
1183 spin_unlock_irq(&qdio
->req_q_lock
);
1187 int zfcp_fsf_exchange_config_data_sync(struct zfcp_qdio
*qdio
,
1188 struct fsf_qtcb_bottom_config
*data
)
1190 struct zfcp_fsf_req
*req
= NULL
;
1193 spin_lock_irq(&qdio
->req_q_lock
);
1194 if (zfcp_qdio_sbal_get(qdio
))
1197 req
= zfcp_fsf_req_create(qdio
, FSF_QTCB_EXCHANGE_CONFIG_DATA
,
1198 SBAL_FLAGS0_TYPE_READ
, NULL
);
1201 retval
= PTR_ERR(req
);
1205 zfcp_qdio_set_sbale_last(qdio
, &req
->qdio_req
);
1206 req
->handler
= zfcp_fsf_exchange_config_data_handler
;
1208 req
->qtcb
->bottom
.config
.feature_selection
=
1210 FSF_FEATURE_LUN_SHARING
|
1211 FSF_FEATURE_NOTIFICATION_LOST
|
1212 FSF_FEATURE_UPDATE_ALERT
;
1217 zfcp_fsf_start_timer(req
, ZFCP_FSF_REQUEST_TIMEOUT
);
1218 retval
= zfcp_fsf_req_send(req
);
1219 spin_unlock_irq(&qdio
->req_q_lock
);
1221 wait_for_completion(&req
->completion
);
1223 zfcp_fsf_req_free(req
);
1227 spin_unlock_irq(&qdio
->req_q_lock
);
1232 * zfcp_fsf_exchange_port_data - request information about local port
1233 * @erp_action: ERP action for the adapter for which port data is requested
1234 * Returns: 0 on success, error otherwise
1236 int zfcp_fsf_exchange_port_data(struct zfcp_erp_action
*erp_action
)
1238 struct zfcp_qdio
*qdio
= erp_action
->adapter
->qdio
;
1239 struct zfcp_fsf_req
*req
;
1242 if (!(qdio
->adapter
->adapter_features
& FSF_FEATURE_HBAAPI_MANAGEMENT
))
1245 spin_lock_irq(&qdio
->req_q_lock
);
1246 if (zfcp_qdio_sbal_get(qdio
))
1249 req
= zfcp_fsf_req_create(qdio
, FSF_QTCB_EXCHANGE_PORT_DATA
,
1250 SBAL_FLAGS0_TYPE_READ
,
1251 qdio
->adapter
->pool
.erp_req
);
1254 retval
= PTR_ERR(req
);
1258 req
->status
|= ZFCP_STATUS_FSFREQ_CLEANUP
;
1259 zfcp_qdio_set_sbale_last(qdio
, &req
->qdio_req
);
1261 req
->handler
= zfcp_fsf_exchange_port_data_handler
;
1262 req
->erp_action
= erp_action
;
1263 erp_action
->fsf_req_id
= req
->req_id
;
1265 zfcp_fsf_start_erp_timer(req
);
1266 retval
= zfcp_fsf_req_send(req
);
1268 zfcp_fsf_req_free(req
);
1269 erp_action
->fsf_req_id
= 0;
1272 spin_unlock_irq(&qdio
->req_q_lock
);
1277 * zfcp_fsf_exchange_port_data_sync - request information about local port
1278 * @qdio: pointer to struct zfcp_qdio
1279 * @data: pointer to struct fsf_qtcb_bottom_port
1280 * Returns: 0 on success, error otherwise
1282 int zfcp_fsf_exchange_port_data_sync(struct zfcp_qdio
*qdio
,
1283 struct fsf_qtcb_bottom_port
*data
)
1285 struct zfcp_fsf_req
*req
= NULL
;
1288 if (!(qdio
->adapter
->adapter_features
& FSF_FEATURE_HBAAPI_MANAGEMENT
))
1291 spin_lock_irq(&qdio
->req_q_lock
);
1292 if (zfcp_qdio_sbal_get(qdio
))
1295 req
= zfcp_fsf_req_create(qdio
, FSF_QTCB_EXCHANGE_PORT_DATA
,
1296 SBAL_FLAGS0_TYPE_READ
, NULL
);
1299 retval
= PTR_ERR(req
);
1306 zfcp_qdio_set_sbale_last(qdio
, &req
->qdio_req
);
1308 req
->handler
= zfcp_fsf_exchange_port_data_handler
;
1309 zfcp_fsf_start_timer(req
, ZFCP_FSF_REQUEST_TIMEOUT
);
1310 retval
= zfcp_fsf_req_send(req
);
1311 spin_unlock_irq(&qdio
->req_q_lock
);
1314 wait_for_completion(&req
->completion
);
1316 zfcp_fsf_req_free(req
);
1321 spin_unlock_irq(&qdio
->req_q_lock
);
1325 static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req
*req
)
1327 struct zfcp_port
*port
= req
->data
;
1328 struct fsf_qtcb_header
*header
= &req
->qtcb
->header
;
1329 struct fc_els_flogi
*plogi
;
1331 if (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)
1334 switch (header
->fsf_status
) {
1335 case FSF_PORT_ALREADY_OPEN
:
1337 case FSF_ACCESS_DENIED
:
1338 zfcp_cfdc_port_denied(port
, &header
->fsf_status_qual
);
1339 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1341 case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED
:
1342 dev_warn(&req
->adapter
->ccw_device
->dev
,
1343 "Not enough FCP adapter resources to open "
1344 "remote port 0x%016Lx\n",
1345 (unsigned long long)port
->wwpn
);
1346 zfcp_erp_set_port_status(port
,
1347 ZFCP_STATUS_COMMON_ERP_FAILED
);
1348 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1350 case FSF_ADAPTER_STATUS_AVAILABLE
:
1351 switch (header
->fsf_status_qual
.word
[0]) {
1352 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE
:
1353 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED
:
1354 case FSF_SQ_NO_RETRY_POSSIBLE
:
1355 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1360 port
->handle
= header
->port_handle
;
1361 atomic_set_mask(ZFCP_STATUS_COMMON_OPEN
|
1362 ZFCP_STATUS_PORT_PHYS_OPEN
, &port
->status
);
1363 atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED
|
1364 ZFCP_STATUS_COMMON_ACCESS_BOXED
,
1366 /* check whether D_ID has changed during open */
1368 * FIXME: This check is not airtight, as the FCP channel does
1369 * not monitor closures of target port connections caused on
1370 * the remote side. Thus, they might miss out on invalidating
1371 * locally cached WWPNs (and other N_Port parameters) of gone
1372 * target ports. So, our heroic attempt to make things safe
1373 * could be undermined by 'open port' response data tagged with
1374 * obsolete WWPNs. Another reason to monitor potential
1375 * connection closures ourself at least (by interpreting
1376 * incoming ELS' and unsolicited status). It just crosses my
1377 * mind that one should be able to cross-check by means of
1378 * another GID_PN straight after a port has been opened.
1379 * Alternately, an ADISC/PDISC ELS should suffice, as well.
1381 plogi
= (struct fc_els_flogi
*) req
->qtcb
->bottom
.support
.els
;
1382 if (req
->qtcb
->bottom
.support
.els1_length
>=
1384 zfcp_fc_plogi_evaluate(port
, plogi
);
1386 case FSF_UNKNOWN_OP_SUBTYPE
:
1387 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1392 put_device(&port
->dev
);
1396 * zfcp_fsf_open_port - create and send open port request
1397 * @erp_action: pointer to struct zfcp_erp_action
1398 * Returns: 0 on success, error otherwise
1400 int zfcp_fsf_open_port(struct zfcp_erp_action
*erp_action
)
1402 struct zfcp_qdio
*qdio
= erp_action
->adapter
->qdio
;
1403 struct zfcp_port
*port
= erp_action
->port
;
1404 struct zfcp_fsf_req
*req
;
1407 spin_lock_irq(&qdio
->req_q_lock
);
1408 if (zfcp_qdio_sbal_get(qdio
))
1411 req
= zfcp_fsf_req_create(qdio
, FSF_QTCB_OPEN_PORT_WITH_DID
,
1412 SBAL_FLAGS0_TYPE_READ
,
1413 qdio
->adapter
->pool
.erp_req
);
1416 retval
= PTR_ERR(req
);
1420 req
->status
|= ZFCP_STATUS_FSFREQ_CLEANUP
;
1421 zfcp_qdio_set_sbale_last(qdio
, &req
->qdio_req
);
1423 req
->handler
= zfcp_fsf_open_port_handler
;
1424 hton24(req
->qtcb
->bottom
.support
.d_id
, port
->d_id
);
1426 req
->erp_action
= erp_action
;
1427 erp_action
->fsf_req_id
= req
->req_id
;
1428 get_device(&port
->dev
);
1430 zfcp_fsf_start_erp_timer(req
);
1431 retval
= zfcp_fsf_req_send(req
);
1433 zfcp_fsf_req_free(req
);
1434 erp_action
->fsf_req_id
= 0;
1435 put_device(&port
->dev
);
1438 spin_unlock_irq(&qdio
->req_q_lock
);
1442 static void zfcp_fsf_close_port_handler(struct zfcp_fsf_req
*req
)
1444 struct zfcp_port
*port
= req
->data
;
1446 if (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)
1449 switch (req
->qtcb
->header
.fsf_status
) {
1450 case FSF_PORT_HANDLE_NOT_VALID
:
1451 zfcp_erp_adapter_reopen(port
->adapter
, 0, "fscph_1", req
);
1452 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1454 case FSF_ADAPTER_STATUS_AVAILABLE
:
1457 zfcp_erp_clear_port_status(port
, ZFCP_STATUS_COMMON_OPEN
);
1463 * zfcp_fsf_close_port - create and send close port request
1464 * @erp_action: pointer to struct zfcp_erp_action
1465 * Returns: 0 on success, error otherwise
1467 int zfcp_fsf_close_port(struct zfcp_erp_action
*erp_action
)
1469 struct zfcp_qdio
*qdio
= erp_action
->adapter
->qdio
;
1470 struct zfcp_fsf_req
*req
;
1473 spin_lock_irq(&qdio
->req_q_lock
);
1474 if (zfcp_qdio_sbal_get(qdio
))
1477 req
= zfcp_fsf_req_create(qdio
, FSF_QTCB_CLOSE_PORT
,
1478 SBAL_FLAGS0_TYPE_READ
,
1479 qdio
->adapter
->pool
.erp_req
);
1482 retval
= PTR_ERR(req
);
1486 req
->status
|= ZFCP_STATUS_FSFREQ_CLEANUP
;
1487 zfcp_qdio_set_sbale_last(qdio
, &req
->qdio_req
);
1489 req
->handler
= zfcp_fsf_close_port_handler
;
1490 req
->data
= erp_action
->port
;
1491 req
->erp_action
= erp_action
;
1492 req
->qtcb
->header
.port_handle
= erp_action
->port
->handle
;
1493 erp_action
->fsf_req_id
= req
->req_id
;
1495 zfcp_fsf_start_erp_timer(req
);
1496 retval
= zfcp_fsf_req_send(req
);
1498 zfcp_fsf_req_free(req
);
1499 erp_action
->fsf_req_id
= 0;
1502 spin_unlock_irq(&qdio
->req_q_lock
);
1506 static void zfcp_fsf_open_wka_port_handler(struct zfcp_fsf_req
*req
)
1508 struct zfcp_fc_wka_port
*wka_port
= req
->data
;
1509 struct fsf_qtcb_header
*header
= &req
->qtcb
->header
;
1511 if (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
) {
1512 wka_port
->status
= ZFCP_FC_WKA_PORT_OFFLINE
;
1516 switch (header
->fsf_status
) {
1517 case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED
:
1518 dev_warn(&req
->adapter
->ccw_device
->dev
,
1519 "Opening WKA port 0x%x failed\n", wka_port
->d_id
);
1521 case FSF_ADAPTER_STATUS_AVAILABLE
:
1522 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1524 case FSF_ACCESS_DENIED
:
1525 wka_port
->status
= ZFCP_FC_WKA_PORT_OFFLINE
;
1528 wka_port
->handle
= header
->port_handle
;
1530 case FSF_PORT_ALREADY_OPEN
:
1531 wka_port
->status
= ZFCP_FC_WKA_PORT_ONLINE
;
1534 wake_up(&wka_port
->completion_wq
);
1538 * zfcp_fsf_open_wka_port - create and send open wka-port request
1539 * @wka_port: pointer to struct zfcp_fc_wka_port
1540 * Returns: 0 on success, error otherwise
1542 int zfcp_fsf_open_wka_port(struct zfcp_fc_wka_port
*wka_port
)
1544 struct zfcp_qdio
*qdio
= wka_port
->adapter
->qdio
;
1545 struct zfcp_fsf_req
*req
;
1548 spin_lock_irq(&qdio
->req_q_lock
);
1549 if (zfcp_qdio_sbal_get(qdio
))
1552 req
= zfcp_fsf_req_create(qdio
, FSF_QTCB_OPEN_PORT_WITH_DID
,
1553 SBAL_FLAGS0_TYPE_READ
,
1554 qdio
->adapter
->pool
.erp_req
);
1556 if (unlikely(IS_ERR(req
))) {
1557 retval
= PTR_ERR(req
);
1561 req
->status
|= ZFCP_STATUS_FSFREQ_CLEANUP
;
1562 zfcp_qdio_set_sbale_last(qdio
, &req
->qdio_req
);
1564 req
->handler
= zfcp_fsf_open_wka_port_handler
;
1565 hton24(req
->qtcb
->bottom
.support
.d_id
, wka_port
->d_id
);
1566 req
->data
= wka_port
;
1568 zfcp_fsf_start_timer(req
, ZFCP_FSF_REQUEST_TIMEOUT
);
1569 retval
= zfcp_fsf_req_send(req
);
1571 zfcp_fsf_req_free(req
);
1573 spin_unlock_irq(&qdio
->req_q_lock
);
1577 static void zfcp_fsf_close_wka_port_handler(struct zfcp_fsf_req
*req
)
1579 struct zfcp_fc_wka_port
*wka_port
= req
->data
;
1581 if (req
->qtcb
->header
.fsf_status
== FSF_PORT_HANDLE_NOT_VALID
) {
1582 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1583 zfcp_erp_adapter_reopen(wka_port
->adapter
, 0, "fscwph1", req
);
1586 wka_port
->status
= ZFCP_FC_WKA_PORT_OFFLINE
;
1587 wake_up(&wka_port
->completion_wq
);
1591 * zfcp_fsf_close_wka_port - create and send close wka port request
1592 * @wka_port: WKA port to open
1593 * Returns: 0 on success, error otherwise
1595 int zfcp_fsf_close_wka_port(struct zfcp_fc_wka_port
*wka_port
)
1597 struct zfcp_qdio
*qdio
= wka_port
->adapter
->qdio
;
1598 struct zfcp_fsf_req
*req
;
1601 spin_lock_irq(&qdio
->req_q_lock
);
1602 if (zfcp_qdio_sbal_get(qdio
))
1605 req
= zfcp_fsf_req_create(qdio
, FSF_QTCB_CLOSE_PORT
,
1606 SBAL_FLAGS0_TYPE_READ
,
1607 qdio
->adapter
->pool
.erp_req
);
1609 if (unlikely(IS_ERR(req
))) {
1610 retval
= PTR_ERR(req
);
1614 req
->status
|= ZFCP_STATUS_FSFREQ_CLEANUP
;
1615 zfcp_qdio_set_sbale_last(qdio
, &req
->qdio_req
);
1617 req
->handler
= zfcp_fsf_close_wka_port_handler
;
1618 req
->data
= wka_port
;
1619 req
->qtcb
->header
.port_handle
= wka_port
->handle
;
1621 zfcp_fsf_start_timer(req
, ZFCP_FSF_REQUEST_TIMEOUT
);
1622 retval
= zfcp_fsf_req_send(req
);
1624 zfcp_fsf_req_free(req
);
1626 spin_unlock_irq(&qdio
->req_q_lock
);
1630 static void zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req
*req
)
1632 struct zfcp_port
*port
= req
->data
;
1633 struct fsf_qtcb_header
*header
= &req
->qtcb
->header
;
1634 struct scsi_device
*sdev
;
1636 if (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)
1639 switch (header
->fsf_status
) {
1640 case FSF_PORT_HANDLE_NOT_VALID
:
1641 zfcp_erp_adapter_reopen(port
->adapter
, 0, "fscpph1", req
);
1642 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1644 case FSF_ACCESS_DENIED
:
1645 zfcp_cfdc_port_denied(port
, &header
->fsf_status_qual
);
1647 case FSF_PORT_BOXED
:
1648 /* can't use generic zfcp_erp_modify_port_status because
1649 * ZFCP_STATUS_COMMON_OPEN must not be reset for the port */
1650 atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN
, &port
->status
);
1651 shost_for_each_device(sdev
, port
->adapter
->scsi_host
)
1652 if (sdev_to_zfcp(sdev
)->port
== port
)
1653 atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN
,
1654 &sdev_to_zfcp(sdev
)->status
);
1655 zfcp_erp_set_port_status(port
, ZFCP_STATUS_COMMON_ACCESS_BOXED
);
1656 zfcp_erp_port_reopen(port
, ZFCP_STATUS_COMMON_ERP_FAILED
,
1658 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1660 case FSF_ADAPTER_STATUS_AVAILABLE
:
1661 switch (header
->fsf_status_qual
.word
[0]) {
1662 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE
:
1664 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED
:
1665 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1670 /* can't use generic zfcp_erp_modify_port_status because
1671 * ZFCP_STATUS_COMMON_OPEN must not be reset for the port
1673 atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN
, &port
->status
);
1674 shost_for_each_device(sdev
, port
->adapter
->scsi_host
)
1675 if (sdev_to_zfcp(sdev
)->port
== port
)
1676 atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN
,
1677 &sdev_to_zfcp(sdev
)->status
);
1683 * zfcp_fsf_close_physical_port - close physical port
1684 * @erp_action: pointer to struct zfcp_erp_action
1685 * Returns: 0 on success
1687 int zfcp_fsf_close_physical_port(struct zfcp_erp_action
*erp_action
)
1689 struct zfcp_qdio
*qdio
= erp_action
->adapter
->qdio
;
1690 struct zfcp_fsf_req
*req
;
1693 spin_lock_irq(&qdio
->req_q_lock
);
1694 if (zfcp_qdio_sbal_get(qdio
))
1697 req
= zfcp_fsf_req_create(qdio
, FSF_QTCB_CLOSE_PHYSICAL_PORT
,
1698 SBAL_FLAGS0_TYPE_READ
,
1699 qdio
->adapter
->pool
.erp_req
);
1702 retval
= PTR_ERR(req
);
1706 req
->status
|= ZFCP_STATUS_FSFREQ_CLEANUP
;
1707 zfcp_qdio_set_sbale_last(qdio
, &req
->qdio_req
);
1709 req
->data
= erp_action
->port
;
1710 req
->qtcb
->header
.port_handle
= erp_action
->port
->handle
;
1711 req
->erp_action
= erp_action
;
1712 req
->handler
= zfcp_fsf_close_physical_port_handler
;
1713 erp_action
->fsf_req_id
= req
->req_id
;
1715 zfcp_fsf_start_erp_timer(req
);
1716 retval
= zfcp_fsf_req_send(req
);
1718 zfcp_fsf_req_free(req
);
1719 erp_action
->fsf_req_id
= 0;
1722 spin_unlock_irq(&qdio
->req_q_lock
);
1726 static void zfcp_fsf_open_lun_handler(struct zfcp_fsf_req
*req
)
1728 struct zfcp_adapter
*adapter
= req
->adapter
;
1729 struct scsi_device
*sdev
= req
->data
;
1730 struct zfcp_scsi_dev
*zfcp_sdev
= sdev_to_zfcp(sdev
);
1731 struct fsf_qtcb_header
*header
= &req
->qtcb
->header
;
1732 struct fsf_qtcb_bottom_support
*bottom
= &req
->qtcb
->bottom
.support
;
1734 if (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)
1737 atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED
|
1738 ZFCP_STATUS_COMMON_ACCESS_BOXED
|
1739 ZFCP_STATUS_LUN_SHARED
|
1740 ZFCP_STATUS_LUN_READONLY
,
1741 &zfcp_sdev
->status
);
1743 switch (header
->fsf_status
) {
1745 case FSF_PORT_HANDLE_NOT_VALID
:
1746 zfcp_erp_adapter_reopen(adapter
, 0, "fsouh_1", req
);
1748 case FSF_LUN_ALREADY_OPEN
:
1750 case FSF_ACCESS_DENIED
:
1751 zfcp_cfdc_lun_denied(sdev
, &header
->fsf_status_qual
);
1752 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1754 case FSF_PORT_BOXED
:
1755 zfcp_erp_set_port_status(zfcp_sdev
->port
,
1756 ZFCP_STATUS_COMMON_ACCESS_BOXED
);
1757 zfcp_erp_port_reopen(zfcp_sdev
->port
,
1758 ZFCP_STATUS_COMMON_ERP_FAILED
, "fsouh_2",
1760 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1762 case FSF_LUN_SHARING_VIOLATION
:
1763 zfcp_cfdc_lun_shrng_vltn(sdev
, &header
->fsf_status_qual
);
1764 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1766 case FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED
:
1767 dev_warn(&adapter
->ccw_device
->dev
,
1768 "No handle is available for LUN "
1769 "0x%016Lx on port 0x%016Lx\n",
1770 (unsigned long long)zfcp_scsi_dev_lun(sdev
),
1771 (unsigned long long)zfcp_sdev
->port
->wwpn
);
1772 zfcp_erp_set_lun_status(sdev
, ZFCP_STATUS_COMMON_ERP_FAILED
);
1774 case FSF_INVALID_COMMAND_OPTION
:
1775 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1777 case FSF_ADAPTER_STATUS_AVAILABLE
:
1778 switch (header
->fsf_status_qual
.word
[0]) {
1779 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE
:
1780 zfcp_fc_test_link(zfcp_sdev
->port
);
1782 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED
:
1783 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1789 zfcp_sdev
->lun_handle
= header
->lun_handle
;
1790 atomic_set_mask(ZFCP_STATUS_COMMON_OPEN
, &zfcp_sdev
->status
);
1791 zfcp_cfdc_open_lun_eval(sdev
, bottom
);
1797 * zfcp_fsf_open_lun - open LUN
1798 * @erp_action: pointer to struct zfcp_erp_action
1799 * Returns: 0 on success, error otherwise
1801 int zfcp_fsf_open_lun(struct zfcp_erp_action
*erp_action
)
1803 struct zfcp_adapter
*adapter
= erp_action
->adapter
;
1804 struct zfcp_qdio
*qdio
= adapter
->qdio
;
1805 struct zfcp_fsf_req
*req
;
1808 spin_lock_irq(&qdio
->req_q_lock
);
1809 if (zfcp_qdio_sbal_get(qdio
))
1812 req
= zfcp_fsf_req_create(qdio
, FSF_QTCB_OPEN_LUN
,
1813 SBAL_FLAGS0_TYPE_READ
,
1814 adapter
->pool
.erp_req
);
1817 retval
= PTR_ERR(req
);
1821 req
->status
|= ZFCP_STATUS_FSFREQ_CLEANUP
;
1822 zfcp_qdio_set_sbale_last(qdio
, &req
->qdio_req
);
1824 req
->qtcb
->header
.port_handle
= erp_action
->port
->handle
;
1825 req
->qtcb
->bottom
.support
.fcp_lun
= zfcp_scsi_dev_lun(erp_action
->sdev
);
1826 req
->handler
= zfcp_fsf_open_lun_handler
;
1827 req
->data
= erp_action
->sdev
;
1828 req
->erp_action
= erp_action
;
1829 erp_action
->fsf_req_id
= req
->req_id
;
1831 if (!(adapter
->connection_features
& FSF_FEATURE_NPIV_MODE
))
1832 req
->qtcb
->bottom
.support
.option
= FSF_OPEN_LUN_SUPPRESS_BOXING
;
1834 zfcp_fsf_start_erp_timer(req
);
1835 retval
= zfcp_fsf_req_send(req
);
1837 zfcp_fsf_req_free(req
);
1838 erp_action
->fsf_req_id
= 0;
1841 spin_unlock_irq(&qdio
->req_q_lock
);
1845 static void zfcp_fsf_close_lun_handler(struct zfcp_fsf_req
*req
)
1847 struct scsi_device
*sdev
= req
->data
;
1848 struct zfcp_scsi_dev
*zfcp_sdev
= sdev_to_zfcp(sdev
);
1850 if (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)
1853 switch (req
->qtcb
->header
.fsf_status
) {
1854 case FSF_PORT_HANDLE_NOT_VALID
:
1855 zfcp_erp_adapter_reopen(zfcp_sdev
->port
->adapter
, 0, "fscuh_1",
1857 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1859 case FSF_LUN_HANDLE_NOT_VALID
:
1860 zfcp_erp_port_reopen(zfcp_sdev
->port
, 0, "fscuh_2", req
);
1861 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1863 case FSF_PORT_BOXED
:
1864 zfcp_erp_set_port_status(zfcp_sdev
->port
,
1865 ZFCP_STATUS_COMMON_ACCESS_BOXED
);
1866 zfcp_erp_port_reopen(zfcp_sdev
->port
,
1867 ZFCP_STATUS_COMMON_ERP_FAILED
, "fscuh_3",
1869 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1871 case FSF_ADAPTER_STATUS_AVAILABLE
:
1872 switch (req
->qtcb
->header
.fsf_status_qual
.word
[0]) {
1873 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE
:
1874 zfcp_fc_test_link(zfcp_sdev
->port
);
1876 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED
:
1877 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1882 atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN
, &zfcp_sdev
->status
);
1888 * zfcp_fsf_close_LUN - close LUN
1889 * @erp_action: pointer to erp_action triggering the "close LUN"
1890 * Returns: 0 on success, error otherwise
1892 int zfcp_fsf_close_lun(struct zfcp_erp_action
*erp_action
)
1894 struct zfcp_qdio
*qdio
= erp_action
->adapter
->qdio
;
1895 struct zfcp_scsi_dev
*zfcp_sdev
= sdev_to_zfcp(erp_action
->sdev
);
1896 struct zfcp_fsf_req
*req
;
1899 spin_lock_irq(&qdio
->req_q_lock
);
1900 if (zfcp_qdio_sbal_get(qdio
))
1903 req
= zfcp_fsf_req_create(qdio
, FSF_QTCB_CLOSE_LUN
,
1904 SBAL_FLAGS0_TYPE_READ
,
1905 qdio
->adapter
->pool
.erp_req
);
1908 retval
= PTR_ERR(req
);
1912 req
->status
|= ZFCP_STATUS_FSFREQ_CLEANUP
;
1913 zfcp_qdio_set_sbale_last(qdio
, &req
->qdio_req
);
1915 req
->qtcb
->header
.port_handle
= erp_action
->port
->handle
;
1916 req
->qtcb
->header
.lun_handle
= zfcp_sdev
->lun_handle
;
1917 req
->handler
= zfcp_fsf_close_lun_handler
;
1918 req
->data
= erp_action
->sdev
;
1919 req
->erp_action
= erp_action
;
1920 erp_action
->fsf_req_id
= req
->req_id
;
1922 zfcp_fsf_start_erp_timer(req
);
1923 retval
= zfcp_fsf_req_send(req
);
1925 zfcp_fsf_req_free(req
);
1926 erp_action
->fsf_req_id
= 0;
1929 spin_unlock_irq(&qdio
->req_q_lock
);
1933 static void zfcp_fsf_update_lat(struct fsf_latency_record
*lat_rec
, u32 lat
)
1935 lat_rec
->sum
+= lat
;
1936 lat_rec
->min
= min(lat_rec
->min
, lat
);
1937 lat_rec
->max
= max(lat_rec
->max
, lat
);
1940 static void zfcp_fsf_req_trace(struct zfcp_fsf_req
*req
, struct scsi_cmnd
*scsi
)
1942 struct fsf_qual_latency_info
*lat_in
;
1943 struct latency_cont
*lat
= NULL
;
1944 struct zfcp_scsi_dev
*zfcp_sdev
= sdev_to_zfcp(scsi
->device
);
1945 struct zfcp_blk_drv_data blktrc
;
1946 int ticks
= req
->adapter
->timer_ticks
;
1948 lat_in
= &req
->qtcb
->prefix
.prot_status_qual
.latency_info
;
1951 blktrc
.magic
= ZFCP_BLK_DRV_DATA_MAGIC
;
1952 if (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)
1953 blktrc
.flags
|= ZFCP_BLK_REQ_ERROR
;
1954 blktrc
.inb_usage
= 0;
1955 blktrc
.outb_usage
= req
->qdio_req
.qdio_outb_usage
;
1957 if (req
->adapter
->adapter_features
& FSF_FEATURE_MEASUREMENT_DATA
&&
1958 !(req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)) {
1959 blktrc
.flags
|= ZFCP_BLK_LAT_VALID
;
1960 blktrc
.channel_lat
= lat_in
->channel_lat
* ticks
;
1961 blktrc
.fabric_lat
= lat_in
->fabric_lat
* ticks
;
1963 switch (req
->qtcb
->bottom
.io
.data_direction
) {
1964 case FSF_DATADIR_DIF_READ_STRIP
:
1965 case FSF_DATADIR_DIF_READ_CONVERT
:
1966 case FSF_DATADIR_READ
:
1967 lat
= &zfcp_sdev
->latencies
.read
;
1969 case FSF_DATADIR_DIF_WRITE_INSERT
:
1970 case FSF_DATADIR_DIF_WRITE_CONVERT
:
1971 case FSF_DATADIR_WRITE
:
1972 lat
= &zfcp_sdev
->latencies
.write
;
1974 case FSF_DATADIR_CMND
:
1975 lat
= &zfcp_sdev
->latencies
.cmd
;
1980 spin_lock(&zfcp_sdev
->latencies
.lock
);
1981 zfcp_fsf_update_lat(&lat
->channel
, lat_in
->channel_lat
);
1982 zfcp_fsf_update_lat(&lat
->fabric
, lat_in
->fabric_lat
);
1984 spin_unlock(&zfcp_sdev
->latencies
.lock
);
1988 blk_add_driver_data(scsi
->request
->q
, scsi
->request
, &blktrc
,
1992 static void zfcp_fsf_fcp_handler_common(struct zfcp_fsf_req
*req
)
1994 struct scsi_cmnd
*scmnd
= req
->data
;
1995 struct scsi_device
*sdev
= scmnd
->device
;
1996 struct zfcp_scsi_dev
*zfcp_sdev
= sdev_to_zfcp(sdev
);
1997 struct fsf_qtcb_header
*header
= &req
->qtcb
->header
;
1999 if (unlikely(req
->status
& ZFCP_STATUS_FSFREQ_ERROR
))
2002 switch (header
->fsf_status
) {
2003 case FSF_HANDLE_MISMATCH
:
2004 case FSF_PORT_HANDLE_NOT_VALID
:
2005 zfcp_erp_adapter_reopen(zfcp_sdev
->port
->adapter
, 0, "fssfch1",
2007 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
2009 case FSF_FCPLUN_NOT_VALID
:
2010 case FSF_LUN_HANDLE_NOT_VALID
:
2011 zfcp_erp_port_reopen(zfcp_sdev
->port
, 0, "fssfch2", req
);
2012 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
2014 case FSF_SERVICE_CLASS_NOT_SUPPORTED
:
2015 zfcp_fsf_class_not_supp(req
);
2017 case FSF_ACCESS_DENIED
:
2018 zfcp_cfdc_lun_denied(sdev
, &header
->fsf_status_qual
);
2019 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
2021 case FSF_DIRECTION_INDICATOR_NOT_VALID
:
2022 dev_err(&req
->adapter
->ccw_device
->dev
,
2023 "Incorrect direction %d, LUN 0x%016Lx on port "
2024 "0x%016Lx closed\n",
2025 req
->qtcb
->bottom
.io
.data_direction
,
2026 (unsigned long long)zfcp_scsi_dev_lun(sdev
),
2027 (unsigned long long)zfcp_sdev
->port
->wwpn
);
2028 zfcp_erp_adapter_shutdown(zfcp_sdev
->port
->adapter
, 0,
2030 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
2032 case FSF_CMND_LENGTH_NOT_VALID
:
2033 dev_err(&req
->adapter
->ccw_device
->dev
,
2034 "Incorrect CDB length %d, LUN 0x%016Lx on "
2035 "port 0x%016Lx closed\n",
2036 req
->qtcb
->bottom
.io
.fcp_cmnd_length
,
2037 (unsigned long long)zfcp_scsi_dev_lun(sdev
),
2038 (unsigned long long)zfcp_sdev
->port
->wwpn
);
2039 zfcp_erp_adapter_shutdown(zfcp_sdev
->port
->adapter
, 0,
2041 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
2043 case FSF_PORT_BOXED
:
2044 zfcp_erp_set_port_status(zfcp_sdev
->port
,
2045 ZFCP_STATUS_COMMON_ACCESS_BOXED
);
2046 zfcp_erp_port_reopen(zfcp_sdev
->port
,
2047 ZFCP_STATUS_COMMON_ERP_FAILED
, "fssfch5",
2049 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
2052 zfcp_erp_set_lun_status(sdev
, ZFCP_STATUS_COMMON_ACCESS_BOXED
);
2053 zfcp_erp_lun_reopen(sdev
, ZFCP_STATUS_COMMON_ERP_FAILED
,
2055 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
2057 case FSF_ADAPTER_STATUS_AVAILABLE
:
2058 if (header
->fsf_status_qual
.word
[0] ==
2059 FSF_SQ_INVOKE_LINK_TEST_PROCEDURE
)
2060 zfcp_fc_test_link(zfcp_sdev
->port
);
2061 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
2066 static void zfcp_fsf_fcp_cmnd_handler(struct zfcp_fsf_req
*req
)
2068 struct scsi_cmnd
*scpnt
;
2069 struct fcp_resp_with_ext
*fcp_rsp
;
2070 unsigned long flags
;
2072 zfcp_fsf_fcp_handler_common(req
);
2074 read_lock_irqsave(&req
->adapter
->abort_lock
, flags
);
2077 if (unlikely(!scpnt
)) {
2078 read_unlock_irqrestore(&req
->adapter
->abort_lock
, flags
);
2082 if (unlikely(req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)) {
2083 set_host_byte(scpnt
, DID_TRANSPORT_DISRUPTED
);
2084 goto skip_fsfstatus
;
2087 switch (req
->qtcb
->header
.fsf_status
) {
2088 case FSF_INCONSISTENT_PROT_DATA
:
2089 case FSF_INVALID_PROT_PARM
:
2090 set_host_byte(scpnt
, DID_ERROR
);
2091 goto skip_fsfstatus
;
2092 case FSF_BLOCK_GUARD_CHECK_FAILURE
:
2093 zfcp_scsi_dif_sense_error(scpnt
, 0x1);
2094 goto skip_fsfstatus
;
2095 case FSF_APP_TAG_CHECK_FAILURE
:
2096 zfcp_scsi_dif_sense_error(scpnt
, 0x2);
2097 goto skip_fsfstatus
;
2098 case FSF_REF_TAG_CHECK_FAILURE
:
2099 zfcp_scsi_dif_sense_error(scpnt
, 0x3);
2100 goto skip_fsfstatus
;
2102 fcp_rsp
= (struct fcp_resp_with_ext
*) &req
->qtcb
->bottom
.io
.fcp_rsp
;
2103 zfcp_fc_eval_fcp_rsp(fcp_rsp
, scpnt
);
2106 zfcp_fsf_req_trace(req
, scpnt
);
2107 zfcp_dbf_scsi_result(req
->adapter
->dbf
, scpnt
, req
);
2109 scpnt
->host_scribble
= NULL
;
2110 (scpnt
->scsi_done
) (scpnt
);
2112 * We must hold this lock until scsi_done has been called.
2113 * Otherwise we may call scsi_done after abort regarding this
2114 * command has completed.
2115 * Note: scsi_done must not block!
2117 read_unlock_irqrestore(&req
->adapter
->abort_lock
, flags
);
2120 static int zfcp_fsf_set_data_dir(struct scsi_cmnd
*scsi_cmnd
, u32
*data_dir
)
2122 switch (scsi_get_prot_op(scsi_cmnd
)) {
2123 case SCSI_PROT_NORMAL
:
2124 switch (scsi_cmnd
->sc_data_direction
) {
2126 *data_dir
= FSF_DATADIR_CMND
;
2128 case DMA_FROM_DEVICE
:
2129 *data_dir
= FSF_DATADIR_READ
;
2132 *data_dir
= FSF_DATADIR_WRITE
;
2134 case DMA_BIDIRECTIONAL
:
2139 case SCSI_PROT_READ_STRIP
:
2140 *data_dir
= FSF_DATADIR_DIF_READ_STRIP
;
2142 case SCSI_PROT_WRITE_INSERT
:
2143 *data_dir
= FSF_DATADIR_DIF_WRITE_INSERT
;
2145 case SCSI_PROT_READ_PASS
:
2146 *data_dir
= FSF_DATADIR_DIF_READ_CONVERT
;
2148 case SCSI_PROT_WRITE_PASS
:
2149 *data_dir
= FSF_DATADIR_DIF_WRITE_CONVERT
;
2159 * zfcp_fsf_fcp_cmnd - initiate an FCP command (for a SCSI command)
2160 * @scsi_cmnd: scsi command to be sent
2162 int zfcp_fsf_fcp_cmnd(struct scsi_cmnd
*scsi_cmnd
)
2164 struct zfcp_fsf_req
*req
;
2165 struct fcp_cmnd
*fcp_cmnd
;
2166 unsigned int sbtype
= SBAL_FLAGS0_TYPE_READ
;
2167 int real_bytes
, retval
= -EIO
, dix_bytes
= 0;
2168 struct scsi_device
*sdev
= scsi_cmnd
->device
;
2169 struct zfcp_scsi_dev
*zfcp_sdev
= sdev_to_zfcp(sdev
);
2170 struct zfcp_adapter
*adapter
= zfcp_sdev
->port
->adapter
;
2171 struct zfcp_qdio
*qdio
= adapter
->qdio
;
2172 struct fsf_qtcb_bottom_io
*io
;
2174 if (unlikely(!(atomic_read(&zfcp_sdev
->status
) &
2175 ZFCP_STATUS_COMMON_UNBLOCKED
)))
2178 spin_lock(&qdio
->req_q_lock
);
2179 if (atomic_read(&qdio
->req_q_free
) <= 0) {
2180 atomic_inc(&qdio
->req_q_full
);
2184 if (scsi_cmnd
->sc_data_direction
== DMA_TO_DEVICE
)
2185 sbtype
= SBAL_FLAGS0_TYPE_WRITE
;
2187 req
= zfcp_fsf_req_create(qdio
, FSF_QTCB_FCP_CMND
,
2188 sbtype
, adapter
->pool
.scsi_req
);
2191 retval
= PTR_ERR(req
);
2195 scsi_cmnd
->host_scribble
= (unsigned char *) req
->req_id
;
2197 io
= &req
->qtcb
->bottom
.io
;
2198 req
->status
|= ZFCP_STATUS_FSFREQ_CLEANUP
;
2199 req
->data
= scsi_cmnd
;
2200 req
->handler
= zfcp_fsf_fcp_cmnd_handler
;
2201 req
->qtcb
->header
.lun_handle
= zfcp_sdev
->lun_handle
;
2202 req
->qtcb
->header
.port_handle
= zfcp_sdev
->port
->handle
;
2203 io
->service_class
= FSF_CLASS_3
;
2204 io
->fcp_cmnd_length
= FCP_CMND_LEN
;
2206 if (scsi_get_prot_op(scsi_cmnd
) != SCSI_PROT_NORMAL
) {
2207 io
->data_block_length
= scsi_cmnd
->device
->sector_size
;
2208 io
->ref_tag_value
= scsi_get_lba(scsi_cmnd
) & 0xFFFFFFFF;
2211 zfcp_fsf_set_data_dir(scsi_cmnd
, &io
->data_direction
);
2213 fcp_cmnd
= (struct fcp_cmnd
*) &req
->qtcb
->bottom
.io
.fcp_cmnd
;
2214 zfcp_fc_scsi_to_fcp(fcp_cmnd
, scsi_cmnd
);
2216 if (scsi_prot_sg_count(scsi_cmnd
)) {
2217 zfcp_qdio_set_data_div(qdio
, &req
->qdio_req
,
2218 scsi_prot_sg_count(scsi_cmnd
));
2219 dix_bytes
= zfcp_qdio_sbals_from_sg(qdio
, &req
->qdio_req
,
2220 scsi_prot_sglist(scsi_cmnd
));
2221 io
->prot_data_length
= dix_bytes
;
2224 real_bytes
= zfcp_qdio_sbals_from_sg(qdio
, &req
->qdio_req
,
2225 scsi_sglist(scsi_cmnd
));
2227 if (unlikely(real_bytes
< 0) || unlikely(dix_bytes
< 0))
2228 goto failed_scsi_cmnd
;
2230 zfcp_qdio_set_sbale_last(adapter
->qdio
, &req
->qdio_req
);
2232 retval
= zfcp_fsf_req_send(req
);
2233 if (unlikely(retval
))
2234 goto failed_scsi_cmnd
;
2239 zfcp_fsf_req_free(req
);
2240 scsi_cmnd
->host_scribble
= NULL
;
2242 spin_unlock(&qdio
->req_q_lock
);
2246 static void zfcp_fsf_fcp_task_mgmt_handler(struct zfcp_fsf_req
*req
)
2248 struct fcp_resp_with_ext
*fcp_rsp
;
2249 struct fcp_resp_rsp_info
*rsp_info
;
2251 zfcp_fsf_fcp_handler_common(req
);
2253 fcp_rsp
= (struct fcp_resp_with_ext
*) &req
->qtcb
->bottom
.io
.fcp_rsp
;
2254 rsp_info
= (struct fcp_resp_rsp_info
*) &fcp_rsp
[1];
2256 if ((rsp_info
->rsp_code
!= FCP_TMF_CMPL
) ||
2257 (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
))
2258 req
->status
|= ZFCP_STATUS_FSFREQ_TMFUNCFAILED
;
2262 * zfcp_fsf_fcp_task_mgmt - send SCSI task management command
2263 * @scmnd: SCSI command to send the task management command for
2264 * @tm_flags: unsigned byte for task management flags
2265 * Returns: on success pointer to struct fsf_req, NULL otherwise
2267 struct zfcp_fsf_req
*zfcp_fsf_fcp_task_mgmt(struct scsi_cmnd
*scmnd
,
2270 struct zfcp_fsf_req
*req
= NULL
;
2271 struct fcp_cmnd
*fcp_cmnd
;
2272 struct zfcp_scsi_dev
*zfcp_sdev
= sdev_to_zfcp(scmnd
->device
);
2273 struct zfcp_qdio
*qdio
= zfcp_sdev
->port
->adapter
->qdio
;
2275 if (unlikely(!(atomic_read(&zfcp_sdev
->status
) &
2276 ZFCP_STATUS_COMMON_UNBLOCKED
)))
2279 spin_lock_irq(&qdio
->req_q_lock
);
2280 if (zfcp_qdio_sbal_get(qdio
))
2283 req
= zfcp_fsf_req_create(qdio
, FSF_QTCB_FCP_CMND
,
2284 SBAL_FLAGS0_TYPE_WRITE
,
2285 qdio
->adapter
->pool
.scsi_req
);
2292 req
->status
|= ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT
;
2294 req
->handler
= zfcp_fsf_fcp_task_mgmt_handler
;
2295 req
->qtcb
->header
.lun_handle
= zfcp_sdev
->lun_handle
;
2296 req
->qtcb
->header
.port_handle
= zfcp_sdev
->port
->handle
;
2297 req
->qtcb
->bottom
.io
.data_direction
= FSF_DATADIR_CMND
;
2298 req
->qtcb
->bottom
.io
.service_class
= FSF_CLASS_3
;
2299 req
->qtcb
->bottom
.io
.fcp_cmnd_length
= FCP_CMND_LEN
;
2301 zfcp_qdio_set_sbale_last(qdio
, &req
->qdio_req
);
2303 fcp_cmnd
= (struct fcp_cmnd
*) &req
->qtcb
->bottom
.io
.fcp_cmnd
;
2304 zfcp_fc_fcp_tm(fcp_cmnd
, scmnd
->device
, tm_flags
);
2306 zfcp_fsf_start_timer(req
, ZFCP_SCSI_ER_TIMEOUT
);
2307 if (!zfcp_fsf_req_send(req
))
2310 zfcp_fsf_req_free(req
);
2313 spin_unlock_irq(&qdio
->req_q_lock
);
2317 static void zfcp_fsf_control_file_handler(struct zfcp_fsf_req
*req
)
2322 * zfcp_fsf_control_file - control file upload/download
2323 * @adapter: pointer to struct zfcp_adapter
2324 * @fsf_cfdc: pointer to struct zfcp_fsf_cfdc
2325 * Returns: on success pointer to struct zfcp_fsf_req, NULL otherwise
2327 struct zfcp_fsf_req
*zfcp_fsf_control_file(struct zfcp_adapter
*adapter
,
2328 struct zfcp_fsf_cfdc
*fsf_cfdc
)
2330 struct zfcp_qdio
*qdio
= adapter
->qdio
;
2331 struct zfcp_fsf_req
*req
= NULL
;
2332 struct fsf_qtcb_bottom_support
*bottom
;
2333 int direction
, retval
= -EIO
, bytes
;
2335 if (!(adapter
->adapter_features
& FSF_FEATURE_CFDC
))
2336 return ERR_PTR(-EOPNOTSUPP
);
2338 switch (fsf_cfdc
->command
) {
2339 case FSF_QTCB_DOWNLOAD_CONTROL_FILE
:
2340 direction
= SBAL_FLAGS0_TYPE_WRITE
;
2342 case FSF_QTCB_UPLOAD_CONTROL_FILE
:
2343 direction
= SBAL_FLAGS0_TYPE_READ
;
2346 return ERR_PTR(-EINVAL
);
2349 spin_lock_irq(&qdio
->req_q_lock
);
2350 if (zfcp_qdio_sbal_get(qdio
))
2353 req
= zfcp_fsf_req_create(qdio
, fsf_cfdc
->command
, direction
, NULL
);
2359 req
->handler
= zfcp_fsf_control_file_handler
;
2361 bottom
= &req
->qtcb
->bottom
.support
;
2362 bottom
->operation_subtype
= FSF_CFDC_OPERATION_SUBTYPE
;
2363 bottom
->option
= fsf_cfdc
->option
;
2365 bytes
= zfcp_qdio_sbals_from_sg(qdio
, &req
->qdio_req
, fsf_cfdc
->sg
);
2367 if (bytes
!= ZFCP_CFDC_MAX_SIZE
) {
2368 zfcp_fsf_req_free(req
);
2371 zfcp_qdio_set_sbale_last(adapter
->qdio
, &req
->qdio_req
);
2373 zfcp_fsf_start_timer(req
, ZFCP_FSF_REQUEST_TIMEOUT
);
2374 retval
= zfcp_fsf_req_send(req
);
2376 spin_unlock_irq(&qdio
->req_q_lock
);
2379 wait_for_completion(&req
->completion
);
2382 return ERR_PTR(retval
);
2386 * zfcp_fsf_reqid_check - validate req_id contained in SBAL returned by QDIO
2387 * @adapter: pointer to struct zfcp_adapter
2388 * @sbal_idx: response queue index of SBAL to be processed
2390 void zfcp_fsf_reqid_check(struct zfcp_qdio
*qdio
, int sbal_idx
)
2392 struct zfcp_adapter
*adapter
= qdio
->adapter
;
2393 struct qdio_buffer
*sbal
= qdio
->res_q
[sbal_idx
];
2394 struct qdio_buffer_element
*sbale
;
2395 struct zfcp_fsf_req
*fsf_req
;
2396 unsigned long req_id
;
2399 for (idx
= 0; idx
< QDIO_MAX_ELEMENTS_PER_BUFFER
; idx
++) {
2401 sbale
= &sbal
->element
[idx
];
2402 req_id
= (unsigned long) sbale
->addr
;
2403 fsf_req
= zfcp_reqlist_find_rm(adapter
->req_list
, req_id
);
2407 * Unknown request means that we have potentially memory
2408 * corruption and must stop the machine immediately.
2410 zfcp_qdio_siosl(adapter
);
2411 panic("error: unknown req_id (%lx) on adapter %s.\n",
2412 req_id
, dev_name(&adapter
->ccw_device
->dev
));
2415 fsf_req
->qdio_req
.sbal_response
= sbal_idx
;
2416 zfcp_fsf_req_complete(fsf_req
);
2418 if (likely(sbale
->flags
& SBAL_FLAGS_LAST_ENTRY
))