4 * Implementation of FSF commands.
6 * Copyright IBM Corporation 2002, 2009
9 #define KMSG_COMPONENT "zfcp"
10 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
12 #include <linux/blktrace_api.h>
16 static void zfcp_fsf_request_timeout_handler(unsigned long data
)
18 struct zfcp_adapter
*adapter
= (struct zfcp_adapter
*) data
;
19 zfcp_erp_adapter_reopen(adapter
, ZFCP_STATUS_COMMON_ERP_FAILED
,
23 static void zfcp_fsf_start_timer(struct zfcp_fsf_req
*fsf_req
,
24 unsigned long timeout
)
26 fsf_req
->timer
.function
= zfcp_fsf_request_timeout_handler
;
27 fsf_req
->timer
.data
= (unsigned long) fsf_req
->adapter
;
28 fsf_req
->timer
.expires
= jiffies
+ timeout
;
29 add_timer(&fsf_req
->timer
);
32 static void zfcp_fsf_start_erp_timer(struct zfcp_fsf_req
*fsf_req
)
34 BUG_ON(!fsf_req
->erp_action
);
35 fsf_req
->timer
.function
= zfcp_erp_timeout_handler
;
36 fsf_req
->timer
.data
= (unsigned long) fsf_req
->erp_action
;
37 fsf_req
->timer
.expires
= jiffies
+ 30 * HZ
;
38 add_timer(&fsf_req
->timer
);
41 /* association between FSF command and FSF QTCB type */
42 static u32 fsf_qtcb_type
[] = {
43 [FSF_QTCB_FCP_CMND
] = FSF_IO_COMMAND
,
44 [FSF_QTCB_ABORT_FCP_CMND
] = FSF_SUPPORT_COMMAND
,
45 [FSF_QTCB_OPEN_PORT_WITH_DID
] = FSF_SUPPORT_COMMAND
,
46 [FSF_QTCB_OPEN_LUN
] = FSF_SUPPORT_COMMAND
,
47 [FSF_QTCB_CLOSE_LUN
] = FSF_SUPPORT_COMMAND
,
48 [FSF_QTCB_CLOSE_PORT
] = FSF_SUPPORT_COMMAND
,
49 [FSF_QTCB_CLOSE_PHYSICAL_PORT
] = FSF_SUPPORT_COMMAND
,
50 [FSF_QTCB_SEND_ELS
] = FSF_SUPPORT_COMMAND
,
51 [FSF_QTCB_SEND_GENERIC
] = FSF_SUPPORT_COMMAND
,
52 [FSF_QTCB_EXCHANGE_CONFIG_DATA
] = FSF_CONFIG_COMMAND
,
53 [FSF_QTCB_EXCHANGE_PORT_DATA
] = FSF_PORT_COMMAND
,
54 [FSF_QTCB_DOWNLOAD_CONTROL_FILE
] = FSF_SUPPORT_COMMAND
,
55 [FSF_QTCB_UPLOAD_CONTROL_FILE
] = FSF_SUPPORT_COMMAND
58 static void zfcp_act_eval_err(struct zfcp_adapter
*adapter
, u32 table
)
60 u16 subtable
= table
>> 16;
61 u16 rule
= table
& 0xffff;
62 const char *act_type
[] = { "unknown", "OS", "WWPN", "DID", "LUN" };
64 if (subtable
&& subtable
< ARRAY_SIZE(act_type
))
65 dev_warn(&adapter
->ccw_device
->dev
,
66 "Access denied according to ACT rule type %s, "
67 "rule %d\n", act_type
[subtable
], rule
);
70 static void zfcp_fsf_access_denied_port(struct zfcp_fsf_req
*req
,
71 struct zfcp_port
*port
)
73 struct fsf_qtcb_header
*header
= &req
->qtcb
->header
;
74 dev_warn(&req
->adapter
->ccw_device
->dev
,
75 "Access denied to port 0x%016Lx\n",
76 (unsigned long long)port
->wwpn
);
77 zfcp_act_eval_err(req
->adapter
, header
->fsf_status_qual
.halfword
[0]);
78 zfcp_act_eval_err(req
->adapter
, header
->fsf_status_qual
.halfword
[1]);
79 zfcp_erp_port_access_denied(port
, "fspad_1", req
);
80 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
83 static void zfcp_fsf_access_denied_unit(struct zfcp_fsf_req
*req
,
84 struct zfcp_unit
*unit
)
86 struct fsf_qtcb_header
*header
= &req
->qtcb
->header
;
87 dev_warn(&req
->adapter
->ccw_device
->dev
,
88 "Access denied to unit 0x%016Lx on port 0x%016Lx\n",
89 (unsigned long long)unit
->fcp_lun
,
90 (unsigned long long)unit
->port
->wwpn
);
91 zfcp_act_eval_err(req
->adapter
, header
->fsf_status_qual
.halfword
[0]);
92 zfcp_act_eval_err(req
->adapter
, header
->fsf_status_qual
.halfword
[1]);
93 zfcp_erp_unit_access_denied(unit
, "fsuad_1", req
);
94 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
97 static void zfcp_fsf_class_not_supp(struct zfcp_fsf_req
*req
)
99 dev_err(&req
->adapter
->ccw_device
->dev
, "FCP device not "
100 "operational because of an unsupported FC class\n");
101 zfcp_erp_adapter_shutdown(req
->adapter
, 0, "fscns_1", req
);
102 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
106 * zfcp_fsf_req_free - free memory used by fsf request
107 * @fsf_req: pointer to struct zfcp_fsf_req
109 void zfcp_fsf_req_free(struct zfcp_fsf_req
*req
)
111 if (likely(req
->pool
)) {
112 if (likely(req
->qtcb
))
113 mempool_free(req
->qtcb
, req
->adapter
->pool
.qtcb_pool
);
114 mempool_free(req
, req
->pool
);
118 if (likely(req
->qtcb
))
119 kmem_cache_free(zfcp_data
.qtcb_cache
, req
->qtcb
);
123 static void zfcp_fsf_status_read_port_closed(struct zfcp_fsf_req
*req
)
125 struct fsf_status_read_buffer
*sr_buf
= req
->data
;
126 struct zfcp_adapter
*adapter
= req
->adapter
;
127 struct zfcp_port
*port
;
128 int d_id
= sr_buf
->d_id
& ZFCP_DID_MASK
;
131 read_lock_irqsave(&zfcp_data
.config_lock
, flags
);
132 list_for_each_entry(port
, &adapter
->port_list_head
, list
)
133 if (port
->d_id
== d_id
) {
134 read_unlock_irqrestore(&zfcp_data
.config_lock
, flags
);
135 zfcp_erp_port_reopen(port
, 0, "fssrpc1", req
);
138 read_unlock_irqrestore(&zfcp_data
.config_lock
, flags
);
141 static void zfcp_fsf_link_down_info_eval(struct zfcp_fsf_req
*req
, char *id
,
142 struct fsf_link_down_info
*link_down
)
144 struct zfcp_adapter
*adapter
= req
->adapter
;
147 if (atomic_read(&adapter
->status
) & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED
)
150 atomic_set_mask(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED
, &adapter
->status
);
152 read_lock_irqsave(&zfcp_data
.config_lock
, flags
);
153 zfcp_scsi_schedule_rports_block(adapter
);
154 read_unlock_irqrestore(&zfcp_data
.config_lock
, flags
);
159 switch (link_down
->error_code
) {
160 case FSF_PSQ_LINK_NO_LIGHT
:
161 dev_warn(&req
->adapter
->ccw_device
->dev
,
162 "There is no light signal from the local "
163 "fibre channel cable\n");
165 case FSF_PSQ_LINK_WRAP_PLUG
:
166 dev_warn(&req
->adapter
->ccw_device
->dev
,
167 "There is a wrap plug instead of a fibre "
170 case FSF_PSQ_LINK_NO_FCP
:
171 dev_warn(&req
->adapter
->ccw_device
->dev
,
172 "The adjacent fibre channel node does not "
175 case FSF_PSQ_LINK_FIRMWARE_UPDATE
:
176 dev_warn(&req
->adapter
->ccw_device
->dev
,
177 "The FCP device is suspended because of a "
178 "firmware update\n");
180 case FSF_PSQ_LINK_INVALID_WWPN
:
181 dev_warn(&req
->adapter
->ccw_device
->dev
,
182 "The FCP device detected a WWPN that is "
183 "duplicate or not valid\n");
185 case FSF_PSQ_LINK_NO_NPIV_SUPPORT
:
186 dev_warn(&req
->adapter
->ccw_device
->dev
,
187 "The fibre channel fabric does not support NPIV\n");
189 case FSF_PSQ_LINK_NO_FCP_RESOURCES
:
190 dev_warn(&req
->adapter
->ccw_device
->dev
,
191 "The FCP adapter cannot support more NPIV ports\n");
193 case FSF_PSQ_LINK_NO_FABRIC_RESOURCES
:
194 dev_warn(&req
->adapter
->ccw_device
->dev
,
195 "The adjacent switch cannot support "
196 "more NPIV ports\n");
198 case FSF_PSQ_LINK_FABRIC_LOGIN_UNABLE
:
199 dev_warn(&req
->adapter
->ccw_device
->dev
,
200 "The FCP adapter could not log in to the "
201 "fibre channel fabric\n");
203 case FSF_PSQ_LINK_WWPN_ASSIGNMENT_CORRUPTED
:
204 dev_warn(&req
->adapter
->ccw_device
->dev
,
205 "The WWPN assignment file on the FCP adapter "
206 "has been damaged\n");
208 case FSF_PSQ_LINK_MODE_TABLE_CURRUPTED
:
209 dev_warn(&req
->adapter
->ccw_device
->dev
,
210 "The mode table on the FCP adapter "
211 "has been damaged\n");
213 case FSF_PSQ_LINK_NO_WWPN_ASSIGNMENT
:
214 dev_warn(&req
->adapter
->ccw_device
->dev
,
215 "All NPIV ports on the FCP adapter have "
219 dev_warn(&req
->adapter
->ccw_device
->dev
,
220 "The link between the FCP adapter and "
221 "the FC fabric is down\n");
224 zfcp_erp_adapter_failed(adapter
, id
, req
);
227 static void zfcp_fsf_status_read_link_down(struct zfcp_fsf_req
*req
)
229 struct fsf_status_read_buffer
*sr_buf
= req
->data
;
230 struct fsf_link_down_info
*ldi
=
231 (struct fsf_link_down_info
*) &sr_buf
->payload
;
233 switch (sr_buf
->status_subtype
) {
234 case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK
:
235 zfcp_fsf_link_down_info_eval(req
, "fssrld1", ldi
);
237 case FSF_STATUS_READ_SUB_FDISC_FAILED
:
238 zfcp_fsf_link_down_info_eval(req
, "fssrld2", ldi
);
240 case FSF_STATUS_READ_SUB_FIRMWARE_UPDATE
:
241 zfcp_fsf_link_down_info_eval(req
, "fssrld3", NULL
);
245 static void zfcp_fsf_status_read_handler(struct zfcp_fsf_req
*req
)
247 struct zfcp_adapter
*adapter
= req
->adapter
;
248 struct fsf_status_read_buffer
*sr_buf
= req
->data
;
250 if (req
->status
& ZFCP_STATUS_FSFREQ_DISMISSED
) {
251 zfcp_hba_dbf_event_fsf_unsol("dism", adapter
, sr_buf
);
252 mempool_free(sr_buf
, adapter
->pool
.status_read_data
);
253 zfcp_fsf_req_free(req
);
257 zfcp_hba_dbf_event_fsf_unsol("read", adapter
, sr_buf
);
259 switch (sr_buf
->status_type
) {
260 case FSF_STATUS_READ_PORT_CLOSED
:
261 zfcp_fsf_status_read_port_closed(req
);
263 case FSF_STATUS_READ_INCOMING_ELS
:
264 zfcp_fc_incoming_els(req
);
266 case FSF_STATUS_READ_SENSE_DATA_AVAIL
:
268 case FSF_STATUS_READ_BIT_ERROR_THRESHOLD
:
269 dev_warn(&adapter
->ccw_device
->dev
,
270 "The error threshold for checksum statistics "
271 "has been exceeded\n");
272 zfcp_hba_dbf_event_berr(adapter
, req
);
274 case FSF_STATUS_READ_LINK_DOWN
:
275 zfcp_fsf_status_read_link_down(req
);
277 case FSF_STATUS_READ_LINK_UP
:
278 dev_info(&adapter
->ccw_device
->dev
,
279 "The local link has been restored\n");
280 /* All ports should be marked as ready to run again */
281 zfcp_erp_modify_adapter_status(adapter
, "fssrh_1", NULL
,
282 ZFCP_STATUS_COMMON_RUNNING
,
284 zfcp_erp_adapter_reopen(adapter
,
285 ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED
|
286 ZFCP_STATUS_COMMON_ERP_FAILED
,
289 case FSF_STATUS_READ_NOTIFICATION_LOST
:
290 if (sr_buf
->status_subtype
& FSF_STATUS_READ_SUB_ACT_UPDATED
)
291 zfcp_erp_adapter_access_changed(adapter
, "fssrh_3",
293 if (sr_buf
->status_subtype
& FSF_STATUS_READ_SUB_INCOMING_ELS
)
294 schedule_work(&adapter
->scan_work
);
296 case FSF_STATUS_READ_CFDC_UPDATED
:
297 zfcp_erp_adapter_access_changed(adapter
, "fssrh_4", req
);
299 case FSF_STATUS_READ_FEATURE_UPDATE_ALERT
:
300 adapter
->adapter_features
= sr_buf
->payload
.word
[0];
304 mempool_free(sr_buf
, adapter
->pool
.status_read_data
);
305 zfcp_fsf_req_free(req
);
307 atomic_inc(&adapter
->stat_miss
);
308 queue_work(adapter
->work_queue
, &adapter
->stat_work
);
311 static void zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req
*req
)
313 switch (req
->qtcb
->header
.fsf_status_qual
.word
[0]) {
314 case FSF_SQ_FCP_RSP_AVAILABLE
:
315 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE
:
316 case FSF_SQ_NO_RETRY_POSSIBLE
:
317 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED
:
319 case FSF_SQ_COMMAND_ABORTED
:
320 req
->status
|= ZFCP_STATUS_FSFREQ_ABORTED
;
322 case FSF_SQ_NO_RECOM
:
323 dev_err(&req
->adapter
->ccw_device
->dev
,
324 "The FCP adapter reported a problem "
325 "that cannot be recovered\n");
326 zfcp_erp_adapter_shutdown(req
->adapter
, 0, "fsfsqe1", req
);
329 /* all non-return stats set FSFREQ_ERROR*/
330 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
333 static void zfcp_fsf_fsfstatus_eval(struct zfcp_fsf_req
*req
)
335 if (unlikely(req
->status
& ZFCP_STATUS_FSFREQ_ERROR
))
338 switch (req
->qtcb
->header
.fsf_status
) {
339 case FSF_UNKNOWN_COMMAND
:
340 dev_err(&req
->adapter
->ccw_device
->dev
,
341 "The FCP adapter does not recognize the command 0x%x\n",
342 req
->qtcb
->header
.fsf_command
);
343 zfcp_erp_adapter_shutdown(req
->adapter
, 0, "fsfse_1", req
);
344 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
346 case FSF_ADAPTER_STATUS_AVAILABLE
:
347 zfcp_fsf_fsfstatus_qual_eval(req
);
352 static void zfcp_fsf_protstatus_eval(struct zfcp_fsf_req
*req
)
354 struct zfcp_adapter
*adapter
= req
->adapter
;
355 struct fsf_qtcb
*qtcb
= req
->qtcb
;
356 union fsf_prot_status_qual
*psq
= &qtcb
->prefix
.prot_status_qual
;
358 zfcp_hba_dbf_event_fsf_response(req
);
360 if (req
->status
& ZFCP_STATUS_FSFREQ_DISMISSED
) {
361 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
|
362 ZFCP_STATUS_FSFREQ_RETRY
; /* only for SCSI cmnds. */
366 switch (qtcb
->prefix
.prot_status
) {
368 case FSF_PROT_FSF_STATUS_PRESENTED
:
370 case FSF_PROT_QTCB_VERSION_ERROR
:
371 dev_err(&adapter
->ccw_device
->dev
,
372 "QTCB version 0x%x not supported by FCP adapter "
373 "(0x%x to 0x%x)\n", FSF_QTCB_CURRENT_VERSION
,
374 psq
->word
[0], psq
->word
[1]);
375 zfcp_erp_adapter_shutdown(adapter
, 0, "fspse_1", req
);
377 case FSF_PROT_ERROR_STATE
:
378 case FSF_PROT_SEQ_NUMB_ERROR
:
379 zfcp_erp_adapter_reopen(adapter
, 0, "fspse_2", req
);
380 req
->status
|= ZFCP_STATUS_FSFREQ_RETRY
;
382 case FSF_PROT_UNSUPP_QTCB_TYPE
:
383 dev_err(&adapter
->ccw_device
->dev
,
384 "The QTCB type is not supported by the FCP adapter\n");
385 zfcp_erp_adapter_shutdown(adapter
, 0, "fspse_3", req
);
387 case FSF_PROT_HOST_CONNECTION_INITIALIZING
:
388 atomic_set_mask(ZFCP_STATUS_ADAPTER_HOST_CON_INIT
,
391 case FSF_PROT_DUPLICATE_REQUEST_ID
:
392 dev_err(&adapter
->ccw_device
->dev
,
393 "0x%Lx is an ambiguous request identifier\n",
394 (unsigned long long)qtcb
->bottom
.support
.req_handle
);
395 zfcp_erp_adapter_shutdown(adapter
, 0, "fspse_4", req
);
397 case FSF_PROT_LINK_DOWN
:
398 zfcp_fsf_link_down_info_eval(req
, "fspse_5",
399 &psq
->link_down_info
);
400 /* FIXME: reopening adapter now? better wait for link up */
401 zfcp_erp_adapter_reopen(adapter
, 0, "fspse_6", req
);
403 case FSF_PROT_REEST_QUEUE
:
404 /* All ports should be marked as ready to run again */
405 zfcp_erp_modify_adapter_status(adapter
, "fspse_7", NULL
,
406 ZFCP_STATUS_COMMON_RUNNING
,
408 zfcp_erp_adapter_reopen(adapter
,
409 ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED
|
410 ZFCP_STATUS_COMMON_ERP_FAILED
,
414 dev_err(&adapter
->ccw_device
->dev
,
415 "0x%x is not a valid transfer protocol status\n",
416 qtcb
->prefix
.prot_status
);
417 zfcp_erp_adapter_shutdown(adapter
, 0, "fspse_9", req
);
419 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
423 * zfcp_fsf_req_complete - process completion of a FSF request
424 * @fsf_req: The FSF request that has been completed.
426 * When a request has been completed either from the FCP adapter,
427 * or it has been dismissed due to a queue shutdown, this function
428 * is called to process the completion status and trigger further
429 * events related to the FSF request.
431 static void zfcp_fsf_req_complete(struct zfcp_fsf_req
*req
)
433 if (unlikely(req
->fsf_command
== FSF_QTCB_UNSOLICITED_STATUS
)) {
434 zfcp_fsf_status_read_handler(req
);
438 del_timer(&req
->timer
);
439 zfcp_fsf_protstatus_eval(req
);
440 zfcp_fsf_fsfstatus_eval(req
);
444 zfcp_erp_notify(req
->erp_action
, 0);
446 if (likely(req
->status
& ZFCP_STATUS_FSFREQ_CLEANUP
))
447 zfcp_fsf_req_free(req
);
449 complete(&req
->completion
);
453 * zfcp_fsf_req_dismiss_all - dismiss all fsf requests
454 * @adapter: pointer to struct zfcp_adapter
456 * Never ever call this without shutting down the adapter first.
457 * Otherwise the adapter would continue using and corrupting s390 storage.
458 * Included BUG_ON() call to ensure this is done.
459 * ERP is supposed to be the only user of this function.
461 void zfcp_fsf_req_dismiss_all(struct zfcp_adapter
*adapter
)
463 struct zfcp_fsf_req
*req
, *tmp
;
465 LIST_HEAD(remove_queue
);
468 BUG_ON(atomic_read(&adapter
->status
) & ZFCP_STATUS_ADAPTER_QDIOUP
);
469 spin_lock_irqsave(&adapter
->req_list_lock
, flags
);
470 for (i
= 0; i
< REQUEST_LIST_SIZE
; i
++)
471 list_splice_init(&adapter
->req_list
[i
], &remove_queue
);
472 spin_unlock_irqrestore(&adapter
->req_list_lock
, flags
);
474 list_for_each_entry_safe(req
, tmp
, &remove_queue
, list
) {
475 list_del(&req
->list
);
476 req
->status
|= ZFCP_STATUS_FSFREQ_DISMISSED
;
477 zfcp_fsf_req_complete(req
);
481 static int zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req
*req
)
483 struct fsf_qtcb_bottom_config
*bottom
;
484 struct zfcp_adapter
*adapter
= req
->adapter
;
485 struct Scsi_Host
*shost
= adapter
->scsi_host
;
487 bottom
= &req
->qtcb
->bottom
.config
;
490 memcpy(req
->data
, bottom
, sizeof(*bottom
));
492 fc_host_node_name(shost
) = bottom
->nport_serv_param
.wwnn
;
493 fc_host_port_name(shost
) = bottom
->nport_serv_param
.wwpn
;
494 fc_host_port_id(shost
) = bottom
->s_id
& ZFCP_DID_MASK
;
495 fc_host_speed(shost
) = bottom
->fc_link_speed
;
496 fc_host_supported_classes(shost
) = FC_COS_CLASS2
| FC_COS_CLASS3
;
498 adapter
->hydra_version
= bottom
->adapter_type
;
499 adapter
->timer_ticks
= bottom
->timer_interval
;
501 if (fc_host_permanent_port_name(shost
) == -1)
502 fc_host_permanent_port_name(shost
) = fc_host_port_name(shost
);
504 switch (bottom
->fc_topology
) {
506 adapter
->peer_d_id
= bottom
->peer_d_id
& ZFCP_DID_MASK
;
507 adapter
->peer_wwpn
= bottom
->plogi_payload
.wwpn
;
508 adapter
->peer_wwnn
= bottom
->plogi_payload
.wwnn
;
509 fc_host_port_type(shost
) = FC_PORTTYPE_PTP
;
511 case FSF_TOPO_FABRIC
:
512 fc_host_port_type(shost
) = FC_PORTTYPE_NPORT
;
515 fc_host_port_type(shost
) = FC_PORTTYPE_NLPORT
;
518 dev_err(&adapter
->ccw_device
->dev
,
519 "Unknown or unsupported arbitrated loop "
520 "fibre channel topology detected\n");
521 zfcp_erp_adapter_shutdown(adapter
, 0, "fsece_1", req
);
528 static void zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req
*req
)
530 struct zfcp_adapter
*adapter
= req
->adapter
;
531 struct fsf_qtcb
*qtcb
= req
->qtcb
;
532 struct fsf_qtcb_bottom_config
*bottom
= &qtcb
->bottom
.config
;
533 struct Scsi_Host
*shost
= adapter
->scsi_host
;
535 if (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)
538 adapter
->fsf_lic_version
= bottom
->lic_version
;
539 adapter
->adapter_features
= bottom
->adapter_features
;
540 adapter
->connection_features
= bottom
->connection_features
;
541 adapter
->peer_wwpn
= 0;
542 adapter
->peer_wwnn
= 0;
543 adapter
->peer_d_id
= 0;
545 switch (qtcb
->header
.fsf_status
) {
547 if (zfcp_fsf_exchange_config_evaluate(req
))
550 if (bottom
->max_qtcb_size
< sizeof(struct fsf_qtcb
)) {
551 dev_err(&adapter
->ccw_device
->dev
,
552 "FCP adapter maximum QTCB size (%d bytes) "
554 bottom
->max_qtcb_size
);
555 zfcp_erp_adapter_shutdown(adapter
, 0, "fsecdh1", req
);
558 atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK
,
561 case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE
:
562 fc_host_node_name(shost
) = 0;
563 fc_host_port_name(shost
) = 0;
564 fc_host_port_id(shost
) = 0;
565 fc_host_speed(shost
) = FC_PORTSPEED_UNKNOWN
;
566 fc_host_port_type(shost
) = FC_PORTTYPE_UNKNOWN
;
567 adapter
->hydra_version
= 0;
569 atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK
,
572 zfcp_fsf_link_down_info_eval(req
, "fsecdh2",
573 &qtcb
->header
.fsf_status_qual
.link_down_info
);
576 zfcp_erp_adapter_shutdown(adapter
, 0, "fsecdh3", req
);
580 if (adapter
->adapter_features
& FSF_FEATURE_HBAAPI_MANAGEMENT
) {
581 adapter
->hardware_version
= bottom
->hardware_version
;
582 memcpy(fc_host_serial_number(shost
), bottom
->serial_number
,
583 min(FC_SERIAL_NUMBER_SIZE
, 17));
584 EBCASC(fc_host_serial_number(shost
),
585 min(FC_SERIAL_NUMBER_SIZE
, 17));
588 if (FSF_QTCB_CURRENT_VERSION
< bottom
->low_qtcb_version
) {
589 dev_err(&adapter
->ccw_device
->dev
,
590 "The FCP adapter only supports newer "
591 "control block versions\n");
592 zfcp_erp_adapter_shutdown(adapter
, 0, "fsecdh4", req
);
595 if (FSF_QTCB_CURRENT_VERSION
> bottom
->high_qtcb_version
) {
596 dev_err(&adapter
->ccw_device
->dev
,
597 "The FCP adapter only supports older "
598 "control block versions\n");
599 zfcp_erp_adapter_shutdown(adapter
, 0, "fsecdh5", req
);
603 static void zfcp_fsf_exchange_port_evaluate(struct zfcp_fsf_req
*req
)
605 struct zfcp_adapter
*adapter
= req
->adapter
;
606 struct fsf_qtcb_bottom_port
*bottom
= &req
->qtcb
->bottom
.port
;
607 struct Scsi_Host
*shost
= adapter
->scsi_host
;
610 memcpy(req
->data
, bottom
, sizeof(*bottom
));
612 if (adapter
->connection_features
& FSF_FEATURE_NPIV_MODE
) {
613 fc_host_permanent_port_name(shost
) = bottom
->wwpn
;
614 fc_host_port_type(shost
) = FC_PORTTYPE_NPIV
;
616 fc_host_permanent_port_name(shost
) = fc_host_port_name(shost
);
617 fc_host_maxframe_size(shost
) = bottom
->maximum_frame_size
;
618 fc_host_supported_speeds(shost
) = bottom
->supported_speed
;
621 static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req
*req
)
623 struct fsf_qtcb
*qtcb
= req
->qtcb
;
625 if (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)
628 switch (qtcb
->header
.fsf_status
) {
630 zfcp_fsf_exchange_port_evaluate(req
);
632 case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE
:
633 zfcp_fsf_exchange_port_evaluate(req
);
634 zfcp_fsf_link_down_info_eval(req
, "fsepdh1",
635 &qtcb
->header
.fsf_status_qual
.link_down_info
);
640 static int zfcp_fsf_sbal_check(struct zfcp_adapter
*adapter
)
642 struct zfcp_qdio_queue
*req_q
= &adapter
->req_q
;
644 spin_lock_bh(&adapter
->req_q_lock
);
645 if (atomic_read(&req_q
->count
))
647 spin_unlock_bh(&adapter
->req_q_lock
);
651 static int zfcp_fsf_req_sbal_get(struct zfcp_adapter
*adapter
)
655 spin_unlock_bh(&adapter
->req_q_lock
);
656 ret
= wait_event_interruptible_timeout(adapter
->request_wq
,
657 zfcp_fsf_sbal_check(adapter
), 5 * HZ
);
661 atomic_inc(&adapter
->qdio_outb_full
);
662 /* assume hanging outbound queue, try queue recovery */
663 zfcp_erp_adapter_reopen(adapter
, 0, "fsrsg_1", NULL
);
666 spin_lock_bh(&adapter
->req_q_lock
);
670 static struct zfcp_fsf_req
*zfcp_fsf_alloc(mempool_t
*pool
)
672 struct zfcp_fsf_req
*req
;
675 req
= mempool_alloc(pool
, GFP_ATOMIC
);
677 req
= kmalloc(sizeof(*req
), GFP_ATOMIC
);
682 memset(req
, 0, sizeof(*req
));
687 static struct fsf_qtcb
*zfcp_qtcb_alloc(mempool_t
*pool
)
689 struct fsf_qtcb
*qtcb
;
692 qtcb
= mempool_alloc(pool
, GFP_ATOMIC
);
694 qtcb
= kmem_cache_alloc(zfcp_data
.qtcb_cache
, GFP_ATOMIC
);
699 memset(qtcb
, 0, sizeof(*qtcb
));
703 static struct zfcp_fsf_req
*zfcp_fsf_req_create(struct zfcp_adapter
*adapter
,
704 u32 fsf_cmd
, mempool_t
*pool
)
706 struct qdio_buffer_element
*sbale
;
707 struct zfcp_qdio_queue
*req_q
= &adapter
->req_q
;
708 struct zfcp_fsf_req
*req
= zfcp_fsf_alloc(pool
);
711 return ERR_PTR(-ENOMEM
);
713 if (adapter
->req_no
== 0)
716 INIT_LIST_HEAD(&req
->list
);
717 init_timer(&req
->timer
);
718 init_completion(&req
->completion
);
720 req
->adapter
= adapter
;
721 req
->fsf_command
= fsf_cmd
;
722 req
->req_id
= adapter
->req_no
;
723 req
->sbal_number
= 1;
724 req
->sbal_first
= req_q
->first
;
725 req
->sbal_last
= req_q
->first
;
728 sbale
= zfcp_qdio_sbale_req(req
);
729 sbale
[0].addr
= (void *) req
->req_id
;
730 sbale
[0].flags
|= SBAL_FLAGS0_COMMAND
;
732 if (likely(fsf_cmd
!= FSF_QTCB_UNSOLICITED_STATUS
)) {
734 req
->qtcb
= zfcp_qtcb_alloc(adapter
->pool
.qtcb_pool
);
736 req
->qtcb
= zfcp_qtcb_alloc(NULL
);
738 if (unlikely(!req
->qtcb
)) {
739 zfcp_fsf_req_free(req
);
740 return ERR_PTR(-ENOMEM
);
743 req
->qtcb
->prefix
.req_seq_no
= req
->adapter
->fsf_req_seq_no
;
744 req
->qtcb
->prefix
.req_id
= req
->req_id
;
745 req
->qtcb
->prefix
.ulp_info
= 26;
746 req
->qtcb
->prefix
.qtcb_type
= fsf_qtcb_type
[req
->fsf_command
];
747 req
->qtcb
->prefix
.qtcb_version
= FSF_QTCB_CURRENT_VERSION
;
748 req
->qtcb
->header
.req_handle
= req
->req_id
;
749 req
->qtcb
->header
.fsf_command
= req
->fsf_command
;
750 req
->seq_no
= adapter
->fsf_req_seq_no
;
751 req
->qtcb
->prefix
.req_seq_no
= adapter
->fsf_req_seq_no
;
752 sbale
[1].addr
= (void *) req
->qtcb
;
753 sbale
[1].length
= sizeof(struct fsf_qtcb
);
756 if (!(atomic_read(&adapter
->status
) & ZFCP_STATUS_ADAPTER_QDIOUP
)) {
757 zfcp_fsf_req_free(req
);
758 return ERR_PTR(-EIO
);
764 static int zfcp_fsf_req_send(struct zfcp_fsf_req
*req
)
766 struct zfcp_adapter
*adapter
= req
->adapter
;
769 int with_qtcb
= (req
->qtcb
!= NULL
);
771 /* put allocated FSF request into hash table */
772 spin_lock_irqsave(&adapter
->req_list_lock
, flags
);
773 idx
= zfcp_reqlist_hash(req
->req_id
);
774 list_add_tail(&req
->list
, &adapter
->req_list
[idx
]);
775 spin_unlock_irqrestore(&adapter
->req_list_lock
, flags
);
777 req
->qdio_outb_usage
= atomic_read(&adapter
->req_q
.count
);
778 req
->issued
= get_clock();
779 if (zfcp_qdio_send(req
)) {
780 del_timer(&req
->timer
);
781 spin_lock_irqsave(&adapter
->req_list_lock
, flags
);
782 /* lookup request again, list might have changed */
783 if (zfcp_reqlist_find_safe(adapter
, req
))
784 zfcp_reqlist_remove(adapter
, req
);
785 spin_unlock_irqrestore(&adapter
->req_list_lock
, flags
);
786 zfcp_erp_adapter_reopen(adapter
, 0, "fsrs__1", req
);
790 /* Don't increase for unsolicited status */
792 adapter
->fsf_req_seq_no
++;
799 * zfcp_fsf_status_read - send status read request
800 * @adapter: pointer to struct zfcp_adapter
801 * @req_flags: request flags
802 * Returns: 0 on success, ERROR otherwise
804 int zfcp_fsf_status_read(struct zfcp_adapter
*adapter
)
806 struct zfcp_fsf_req
*req
;
807 struct fsf_status_read_buffer
*sr_buf
;
808 struct qdio_buffer_element
*sbale
;
811 spin_lock_bh(&adapter
->req_q_lock
);
812 if (zfcp_fsf_req_sbal_get(adapter
))
815 req
= zfcp_fsf_req_create(adapter
, FSF_QTCB_UNSOLICITED_STATUS
,
816 adapter
->pool
.status_read_req
);
818 retval
= PTR_ERR(req
);
822 sbale
= zfcp_qdio_sbale_req(req
);
823 sbale
[2].flags
|= SBAL_FLAGS_LAST_ENTRY
;
826 sr_buf
= mempool_alloc(adapter
->pool
.status_read_data
, GFP_ATOMIC
);
831 memset(sr_buf
, 0, sizeof(*sr_buf
));
833 sbale
= zfcp_qdio_sbale_curr(req
);
834 sbale
->addr
= (void *) sr_buf
;
835 sbale
->length
= sizeof(*sr_buf
);
837 retval
= zfcp_fsf_req_send(req
);
839 goto failed_req_send
;
844 mempool_free(sr_buf
, adapter
->pool
.status_read_data
);
846 zfcp_fsf_req_free(req
);
847 zfcp_hba_dbf_event_fsf_unsol("fail", adapter
, NULL
);
849 spin_unlock_bh(&adapter
->req_q_lock
);
853 static void zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req
*req
)
855 struct zfcp_unit
*unit
= req
->data
;
856 union fsf_status_qual
*fsq
= &req
->qtcb
->header
.fsf_status_qual
;
858 if (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)
861 switch (req
->qtcb
->header
.fsf_status
) {
862 case FSF_PORT_HANDLE_NOT_VALID
:
863 if (fsq
->word
[0] == fsq
->word
[1]) {
864 zfcp_erp_adapter_reopen(unit
->port
->adapter
, 0,
866 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
869 case FSF_LUN_HANDLE_NOT_VALID
:
870 if (fsq
->word
[0] == fsq
->word
[1]) {
871 zfcp_erp_port_reopen(unit
->port
, 0, "fsafch2", req
);
872 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
875 case FSF_FCP_COMMAND_DOES_NOT_EXIST
:
876 req
->status
|= ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED
;
879 zfcp_erp_port_boxed(unit
->port
, "fsafch3", req
);
880 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
|
881 ZFCP_STATUS_FSFREQ_RETRY
;
884 zfcp_erp_unit_boxed(unit
, "fsafch4", req
);
885 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
|
886 ZFCP_STATUS_FSFREQ_RETRY
;
888 case FSF_ADAPTER_STATUS_AVAILABLE
:
889 switch (fsq
->word
[0]) {
890 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE
:
891 zfcp_test_link(unit
->port
);
893 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED
:
894 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
899 req
->status
|= ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED
;
905 * zfcp_fsf_abort_fcp_command - abort running SCSI command
906 * @old_req_id: unsigned long
907 * @unit: pointer to struct zfcp_unit
908 * Returns: pointer to struct zfcp_fsf_req
911 struct zfcp_fsf_req
*zfcp_fsf_abort_fcp_command(unsigned long old_req_id
,
912 struct zfcp_unit
*unit
)
914 struct qdio_buffer_element
*sbale
;
915 struct zfcp_fsf_req
*req
= NULL
;
916 struct zfcp_adapter
*adapter
= unit
->port
->adapter
;
918 spin_lock_bh(&adapter
->req_q_lock
);
919 if (zfcp_fsf_req_sbal_get(adapter
))
921 req
= zfcp_fsf_req_create(adapter
, FSF_QTCB_ABORT_FCP_CMND
,
922 adapter
->pool
.scsi_abort
);
928 if (unlikely(!(atomic_read(&unit
->status
) &
929 ZFCP_STATUS_COMMON_UNBLOCKED
)))
932 sbale
= zfcp_qdio_sbale_req(req
);
933 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_READ
;
934 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
937 req
->handler
= zfcp_fsf_abort_fcp_command_handler
;
938 req
->qtcb
->header
.lun_handle
= unit
->handle
;
939 req
->qtcb
->header
.port_handle
= unit
->port
->handle
;
940 req
->qtcb
->bottom
.support
.req_handle
= (u64
) old_req_id
;
942 zfcp_fsf_start_timer(req
, ZFCP_SCSI_ER_TIMEOUT
);
943 if (!zfcp_fsf_req_send(req
))
947 zfcp_fsf_req_free(req
);
950 spin_unlock_bh(&adapter
->req_q_lock
);
954 static void zfcp_fsf_send_ct_handler(struct zfcp_fsf_req
*req
)
956 struct zfcp_adapter
*adapter
= req
->adapter
;
957 struct zfcp_send_ct
*send_ct
= req
->data
;
958 struct fsf_qtcb_header
*header
= &req
->qtcb
->header
;
960 send_ct
->status
= -EINVAL
;
962 if (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)
965 switch (header
->fsf_status
) {
967 zfcp_san_dbf_event_ct_response(req
);
970 case FSF_SERVICE_CLASS_NOT_SUPPORTED
:
971 zfcp_fsf_class_not_supp(req
);
973 case FSF_ADAPTER_STATUS_AVAILABLE
:
974 switch (header
->fsf_status_qual
.word
[0]){
975 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE
:
976 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED
:
977 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
981 case FSF_ACCESS_DENIED
:
984 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
|
985 ZFCP_STATUS_FSFREQ_RETRY
;
987 case FSF_PORT_HANDLE_NOT_VALID
:
988 zfcp_erp_adapter_reopen(adapter
, 0, "fsscth1", req
);
990 case FSF_GENERIC_COMMAND_REJECTED
:
991 case FSF_PAYLOAD_SIZE_MISMATCH
:
992 case FSF_REQUEST_SIZE_TOO_LARGE
:
993 case FSF_RESPONSE_SIZE_TOO_LARGE
:
994 case FSF_SBAL_MISMATCH
:
995 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1000 if (send_ct
->handler
)
1001 send_ct
->handler(send_ct
->handler_data
);
1004 static void zfcp_fsf_setup_ct_els_unchained(struct qdio_buffer_element
*sbale
,
1005 struct scatterlist
*sg_req
,
1006 struct scatterlist
*sg_resp
)
1008 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_WRITE_READ
;
1009 sbale
[2].addr
= sg_virt(sg_req
);
1010 sbale
[2].length
= sg_req
->length
;
1011 sbale
[3].addr
= sg_virt(sg_resp
);
1012 sbale
[3].length
= sg_resp
->length
;
1013 sbale
[3].flags
|= SBAL_FLAGS_LAST_ENTRY
;
1016 static int zfcp_fsf_one_sbal(struct scatterlist
*sg
)
1018 return sg_is_last(sg
) && sg
->length
<= PAGE_SIZE
;
1021 static int zfcp_fsf_setup_ct_els_sbals(struct zfcp_fsf_req
*req
,
1022 struct scatterlist
*sg_req
,
1023 struct scatterlist
*sg_resp
,
1026 struct qdio_buffer_element
*sbale
= zfcp_qdio_sbale_req(req
);
1027 u32 feat
= req
->adapter
->adapter_features
;
1030 if (!(feat
& FSF_FEATURE_ELS_CT_CHAINED_SBALS
)) {
1031 if (!zfcp_fsf_one_sbal(sg_req
) || !zfcp_fsf_one_sbal(sg_resp
))
1034 zfcp_fsf_setup_ct_els_unchained(sbale
, sg_req
, sg_resp
);
1038 /* use single, unchained SBAL if it can hold the request */
1039 if (zfcp_fsf_one_sbal(sg_req
) && zfcp_fsf_one_sbal(sg_resp
)) {
1040 zfcp_fsf_setup_ct_els_unchained(sbale
, sg_req
, sg_resp
);
1044 bytes
= zfcp_qdio_sbals_from_sg(req
, SBAL_FLAGS0_TYPE_WRITE_READ
,
1048 req
->qtcb
->bottom
.support
.req_buf_length
= bytes
;
1049 req
->sbale_curr
= ZFCP_LAST_SBALE_PER_SBAL
;
1051 bytes
= zfcp_qdio_sbals_from_sg(req
, SBAL_FLAGS0_TYPE_WRITE_READ
,
1052 sg_resp
, max_sbals
);
1055 req
->qtcb
->bottom
.support
.resp_buf_length
= bytes
;
1061 * zfcp_fsf_send_ct - initiate a Generic Service request (FC-GS)
1062 * @ct: pointer to struct zfcp_send_ct with data for request
1063 * @pool: if non-null this mempool is used to allocate struct zfcp_fsf_req
1064 * @erp_action: if non-null the Generic Service request sent within ERP
1066 int zfcp_fsf_send_ct(struct zfcp_send_ct
*ct
, mempool_t
*pool
,
1067 struct zfcp_erp_action
*erp_action
)
1069 struct zfcp_wka_port
*wka_port
= ct
->wka_port
;
1070 struct zfcp_adapter
*adapter
= wka_port
->adapter
;
1071 struct zfcp_fsf_req
*req
;
1074 spin_lock_bh(&adapter
->req_q_lock
);
1075 if (zfcp_fsf_req_sbal_get(adapter
))
1078 req
= zfcp_fsf_req_create(adapter
, FSF_QTCB_SEND_GENERIC
, pool
);
1085 req
->status
|= ZFCP_STATUS_FSFREQ_CLEANUP
;
1086 ret
= zfcp_fsf_setup_ct_els_sbals(req
, ct
->req
, ct
->resp
,
1087 FSF_MAX_SBALS_PER_REQ
);
1091 req
->handler
= zfcp_fsf_send_ct_handler
;
1092 req
->qtcb
->header
.port_handle
= wka_port
->handle
;
1093 req
->qtcb
->bottom
.support
.service_class
= FSF_CLASS_3
;
1094 req
->qtcb
->bottom
.support
.timeout
= ct
->timeout
;
1097 zfcp_san_dbf_event_ct_request(req
);
1100 erp_action
->fsf_req
= req
;
1101 req
->erp_action
= erp_action
;
1102 zfcp_fsf_start_erp_timer(req
);
1104 zfcp_fsf_start_timer(req
, ZFCP_FSF_REQUEST_TIMEOUT
);
1106 ret
= zfcp_fsf_req_send(req
);
1113 zfcp_fsf_req_free(req
);
1115 erp_action
->fsf_req
= NULL
;
1117 spin_unlock_bh(&adapter
->req_q_lock
);
1121 static void zfcp_fsf_send_els_handler(struct zfcp_fsf_req
*req
)
1123 struct zfcp_send_els
*send_els
= req
->data
;
1124 struct zfcp_port
*port
= send_els
->port
;
1125 struct fsf_qtcb_header
*header
= &req
->qtcb
->header
;
1127 send_els
->status
= -EINVAL
;
1129 if (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)
1130 goto skip_fsfstatus
;
1132 switch (header
->fsf_status
) {
1134 zfcp_san_dbf_event_els_response(req
);
1135 send_els
->status
= 0;
1137 case FSF_SERVICE_CLASS_NOT_SUPPORTED
:
1138 zfcp_fsf_class_not_supp(req
);
1140 case FSF_ADAPTER_STATUS_AVAILABLE
:
1141 switch (header
->fsf_status_qual
.word
[0]){
1142 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE
:
1143 if (port
&& (send_els
->ls_code
!= ZFCP_LS_ADISC
))
1144 zfcp_test_link(port
);
1146 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED
:
1147 case FSF_SQ_RETRY_IF_POSSIBLE
:
1148 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1152 case FSF_ELS_COMMAND_REJECTED
:
1153 case FSF_PAYLOAD_SIZE_MISMATCH
:
1154 case FSF_REQUEST_SIZE_TOO_LARGE
:
1155 case FSF_RESPONSE_SIZE_TOO_LARGE
:
1157 case FSF_ACCESS_DENIED
:
1159 zfcp_fsf_access_denied_port(req
, port
);
1161 case FSF_SBAL_MISMATCH
:
1162 /* should never occure, avoided in zfcp_fsf_send_els */
1165 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1169 if (send_els
->handler
)
1170 send_els
->handler(send_els
->handler_data
);
1174 * zfcp_fsf_send_els - initiate an ELS command (FC-FS)
1175 * @els: pointer to struct zfcp_send_els with data for the command
1177 int zfcp_fsf_send_els(struct zfcp_send_els
*els
)
1179 struct zfcp_fsf_req
*req
;
1180 struct zfcp_adapter
*adapter
= els
->adapter
;
1181 struct fsf_qtcb_bottom_support
*bottom
;
1184 spin_lock_bh(&adapter
->req_q_lock
);
1185 if (zfcp_fsf_req_sbal_get(adapter
))
1188 req
= zfcp_fsf_req_create(adapter
, FSF_QTCB_SEND_ELS
, NULL
);
1195 req
->status
|= ZFCP_STATUS_FSFREQ_CLEANUP
;
1196 ret
= zfcp_fsf_setup_ct_els_sbals(req
, els
->req
, els
->resp
, 2);
1201 bottom
= &req
->qtcb
->bottom
.support
;
1202 req
->handler
= zfcp_fsf_send_els_handler
;
1203 bottom
->d_id
= els
->d_id
;
1204 bottom
->service_class
= FSF_CLASS_3
;
1205 bottom
->timeout
= 2 * R_A_TOV
;
1208 zfcp_san_dbf_event_els_request(req
);
1210 zfcp_fsf_start_timer(req
, ZFCP_FSF_REQUEST_TIMEOUT
);
1211 ret
= zfcp_fsf_req_send(req
);
1218 zfcp_fsf_req_free(req
);
1220 spin_unlock_bh(&adapter
->req_q_lock
);
1224 int zfcp_fsf_exchange_config_data(struct zfcp_erp_action
*erp_action
)
1226 struct qdio_buffer_element
*sbale
;
1227 struct zfcp_fsf_req
*req
;
1228 struct zfcp_adapter
*adapter
= erp_action
->adapter
;
1231 spin_lock_bh(&adapter
->req_q_lock
);
1232 if (zfcp_fsf_req_sbal_get(adapter
))
1235 req
= zfcp_fsf_req_create(adapter
, FSF_QTCB_EXCHANGE_CONFIG_DATA
,
1236 adapter
->pool
.erp_req
);
1239 retval
= PTR_ERR(req
);
1243 req
->status
|= ZFCP_STATUS_FSFREQ_CLEANUP
;
1244 sbale
= zfcp_qdio_sbale_req(req
);
1245 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_READ
;
1246 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
1248 req
->qtcb
->bottom
.config
.feature_selection
=
1250 FSF_FEATURE_LUN_SHARING
|
1251 FSF_FEATURE_NOTIFICATION_LOST
|
1252 FSF_FEATURE_UPDATE_ALERT
;
1253 req
->erp_action
= erp_action
;
1254 req
->handler
= zfcp_fsf_exchange_config_data_handler
;
1255 erp_action
->fsf_req
= req
;
1257 zfcp_fsf_start_erp_timer(req
);
1258 retval
= zfcp_fsf_req_send(req
);
1260 zfcp_fsf_req_free(req
);
1261 erp_action
->fsf_req
= NULL
;
1264 spin_unlock_bh(&adapter
->req_q_lock
);
1268 int zfcp_fsf_exchange_config_data_sync(struct zfcp_adapter
*adapter
,
1269 struct fsf_qtcb_bottom_config
*data
)
1271 struct qdio_buffer_element
*sbale
;
1272 struct zfcp_fsf_req
*req
= NULL
;
1275 spin_lock_bh(&adapter
->req_q_lock
);
1276 if (zfcp_fsf_req_sbal_get(adapter
))
1279 req
= zfcp_fsf_req_create(adapter
, FSF_QTCB_EXCHANGE_CONFIG_DATA
, NULL
);
1282 retval
= PTR_ERR(req
);
1286 sbale
= zfcp_qdio_sbale_req(req
);
1287 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_READ
;
1288 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
1289 req
->handler
= zfcp_fsf_exchange_config_data_handler
;
1291 req
->qtcb
->bottom
.config
.feature_selection
=
1293 FSF_FEATURE_LUN_SHARING
|
1294 FSF_FEATURE_NOTIFICATION_LOST
|
1295 FSF_FEATURE_UPDATE_ALERT
;
1300 zfcp_fsf_start_timer(req
, ZFCP_FSF_REQUEST_TIMEOUT
);
1301 retval
= zfcp_fsf_req_send(req
);
1302 spin_unlock_bh(&adapter
->req_q_lock
);
1304 wait_for_completion(&req
->completion
);
1306 zfcp_fsf_req_free(req
);
1310 spin_unlock_bh(&adapter
->req_q_lock
);
1315 * zfcp_fsf_exchange_port_data - request information about local port
1316 * @erp_action: ERP action for the adapter for which port data is requested
1317 * Returns: 0 on success, error otherwise
1319 int zfcp_fsf_exchange_port_data(struct zfcp_erp_action
*erp_action
)
1321 struct qdio_buffer_element
*sbale
;
1322 struct zfcp_fsf_req
*req
;
1323 struct zfcp_adapter
*adapter
= erp_action
->adapter
;
1326 if (!(adapter
->adapter_features
& FSF_FEATURE_HBAAPI_MANAGEMENT
))
1329 spin_lock_bh(&adapter
->req_q_lock
);
1330 if (zfcp_fsf_req_sbal_get(adapter
))
1333 req
= zfcp_fsf_req_create(adapter
, FSF_QTCB_EXCHANGE_PORT_DATA
,
1334 adapter
->pool
.erp_req
);
1337 retval
= PTR_ERR(req
);
1341 req
->status
|= ZFCP_STATUS_FSFREQ_CLEANUP
;
1342 sbale
= zfcp_qdio_sbale_req(req
);
1343 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_READ
;
1344 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
1346 req
->handler
= zfcp_fsf_exchange_port_data_handler
;
1347 req
->erp_action
= erp_action
;
1348 erp_action
->fsf_req
= req
;
1350 zfcp_fsf_start_erp_timer(req
);
1351 retval
= zfcp_fsf_req_send(req
);
1353 zfcp_fsf_req_free(req
);
1354 erp_action
->fsf_req
= NULL
;
1357 spin_unlock_bh(&adapter
->req_q_lock
);
1362 * zfcp_fsf_exchange_port_data_sync - request information about local port
1363 * @adapter: pointer to struct zfcp_adapter
1364 * @data: pointer to struct fsf_qtcb_bottom_port
1365 * Returns: 0 on success, error otherwise
1367 int zfcp_fsf_exchange_port_data_sync(struct zfcp_adapter
*adapter
,
1368 struct fsf_qtcb_bottom_port
*data
)
1370 struct qdio_buffer_element
*sbale
;
1371 struct zfcp_fsf_req
*req
= NULL
;
1374 if (!(adapter
->adapter_features
& FSF_FEATURE_HBAAPI_MANAGEMENT
))
1377 spin_lock_bh(&adapter
->req_q_lock
);
1378 if (zfcp_fsf_req_sbal_get(adapter
))
1381 req
= zfcp_fsf_req_create(adapter
, FSF_QTCB_EXCHANGE_PORT_DATA
, NULL
);
1384 retval
= PTR_ERR(req
);
1391 sbale
= zfcp_qdio_sbale_req(req
);
1392 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_READ
;
1393 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
1395 req
->handler
= zfcp_fsf_exchange_port_data_handler
;
1396 zfcp_fsf_start_timer(req
, ZFCP_FSF_REQUEST_TIMEOUT
);
1397 retval
= zfcp_fsf_req_send(req
);
1398 spin_unlock_bh(&adapter
->req_q_lock
);
1401 wait_for_completion(&req
->completion
);
1403 zfcp_fsf_req_free(req
);
1408 spin_unlock_bh(&adapter
->req_q_lock
);
1412 static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req
*req
)
1414 struct zfcp_port
*port
= req
->data
;
1415 struct fsf_qtcb_header
*header
= &req
->qtcb
->header
;
1416 struct fsf_plogi
*plogi
;
1418 if (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)
1421 switch (header
->fsf_status
) {
1422 case FSF_PORT_ALREADY_OPEN
:
1424 case FSF_ACCESS_DENIED
:
1425 zfcp_fsf_access_denied_port(req
, port
);
1427 case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED
:
1428 dev_warn(&req
->adapter
->ccw_device
->dev
,
1429 "Not enough FCP adapter resources to open "
1430 "remote port 0x%016Lx\n",
1431 (unsigned long long)port
->wwpn
);
1432 zfcp_erp_port_failed(port
, "fsoph_1", req
);
1433 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1435 case FSF_ADAPTER_STATUS_AVAILABLE
:
1436 switch (header
->fsf_status_qual
.word
[0]) {
1437 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE
:
1438 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED
:
1439 case FSF_SQ_NO_RETRY_POSSIBLE
:
1440 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1445 port
->handle
= header
->port_handle
;
1446 atomic_set_mask(ZFCP_STATUS_COMMON_OPEN
|
1447 ZFCP_STATUS_PORT_PHYS_OPEN
, &port
->status
);
1448 atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED
|
1449 ZFCP_STATUS_COMMON_ACCESS_BOXED
,
1451 /* check whether D_ID has changed during open */
1453 * FIXME: This check is not airtight, as the FCP channel does
1454 * not monitor closures of target port connections caused on
1455 * the remote side. Thus, they might miss out on invalidating
1456 * locally cached WWPNs (and other N_Port parameters) of gone
1457 * target ports. So, our heroic attempt to make things safe
1458 * could be undermined by 'open port' response data tagged with
1459 * obsolete WWPNs. Another reason to monitor potential
1460 * connection closures ourself at least (by interpreting
1461 * incoming ELS' and unsolicited status). It just crosses my
1462 * mind that one should be able to cross-check by means of
1463 * another GID_PN straight after a port has been opened.
1464 * Alternately, an ADISC/PDISC ELS should suffice, as well.
1466 plogi
= (struct fsf_plogi
*) req
->qtcb
->bottom
.support
.els
;
1467 if (req
->qtcb
->bottom
.support
.els1_length
>=
1468 FSF_PLOGI_MIN_LEN
) {
1469 if (plogi
->serv_param
.wwpn
!= port
->wwpn
)
1472 port
->wwnn
= plogi
->serv_param
.wwnn
;
1473 zfcp_fc_plogi_evaluate(port
, plogi
);
1477 case FSF_UNKNOWN_OP_SUBTYPE
:
1478 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1483 zfcp_port_put(port
);
1487 * zfcp_fsf_open_port - create and send open port request
1488 * @erp_action: pointer to struct zfcp_erp_action
1489 * Returns: 0 on success, error otherwise
1491 int zfcp_fsf_open_port(struct zfcp_erp_action
*erp_action
)
1493 struct qdio_buffer_element
*sbale
;
1494 struct zfcp_adapter
*adapter
= erp_action
->adapter
;
1495 struct zfcp_fsf_req
*req
;
1496 struct zfcp_port
*port
= erp_action
->port
;
1499 spin_lock_bh(&adapter
->req_q_lock
);
1500 if (zfcp_fsf_req_sbal_get(adapter
))
1503 req
= zfcp_fsf_req_create(adapter
, FSF_QTCB_OPEN_PORT_WITH_DID
,
1504 adapter
->pool
.erp_req
);
1507 retval
= PTR_ERR(req
);
1511 req
->status
|= ZFCP_STATUS_FSFREQ_CLEANUP
;
1512 sbale
= zfcp_qdio_sbale_req(req
);
1513 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_READ
;
1514 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
1516 req
->handler
= zfcp_fsf_open_port_handler
;
1517 req
->qtcb
->bottom
.support
.d_id
= port
->d_id
;
1519 req
->erp_action
= erp_action
;
1520 erp_action
->fsf_req
= req
;
1521 zfcp_port_get(port
);
1523 zfcp_fsf_start_erp_timer(req
);
1524 retval
= zfcp_fsf_req_send(req
);
1526 zfcp_fsf_req_free(req
);
1527 erp_action
->fsf_req
= NULL
;
1528 zfcp_port_put(port
);
1531 spin_unlock_bh(&adapter
->req_q_lock
);
1535 static void zfcp_fsf_close_port_handler(struct zfcp_fsf_req
*req
)
1537 struct zfcp_port
*port
= req
->data
;
1539 if (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)
1542 switch (req
->qtcb
->header
.fsf_status
) {
1543 case FSF_PORT_HANDLE_NOT_VALID
:
1544 zfcp_erp_adapter_reopen(port
->adapter
, 0, "fscph_1", req
);
1545 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1547 case FSF_ADAPTER_STATUS_AVAILABLE
:
1550 zfcp_erp_modify_port_status(port
, "fscph_2", req
,
1551 ZFCP_STATUS_COMMON_OPEN
,
1558 * zfcp_fsf_close_port - create and send close port request
1559 * @erp_action: pointer to struct zfcp_erp_action
1560 * Returns: 0 on success, error otherwise
1562 int zfcp_fsf_close_port(struct zfcp_erp_action
*erp_action
)
1564 struct qdio_buffer_element
*sbale
;
1565 struct zfcp_adapter
*adapter
= erp_action
->adapter
;
1566 struct zfcp_fsf_req
*req
;
1569 spin_lock_bh(&adapter
->req_q_lock
);
1570 if (zfcp_fsf_req_sbal_get(adapter
))
1573 req
= zfcp_fsf_req_create(adapter
, FSF_QTCB_CLOSE_PORT
,
1574 adapter
->pool
.erp_req
);
1577 retval
= PTR_ERR(req
);
1581 req
->status
|= ZFCP_STATUS_FSFREQ_CLEANUP
;
1582 sbale
= zfcp_qdio_sbale_req(req
);
1583 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_READ
;
1584 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
1586 req
->handler
= zfcp_fsf_close_port_handler
;
1587 req
->data
= erp_action
->port
;
1588 req
->erp_action
= erp_action
;
1589 req
->qtcb
->header
.port_handle
= erp_action
->port
->handle
;
1590 erp_action
->fsf_req
= req
;
1592 zfcp_fsf_start_erp_timer(req
);
1593 retval
= zfcp_fsf_req_send(req
);
1595 zfcp_fsf_req_free(req
);
1596 erp_action
->fsf_req
= NULL
;
1599 spin_unlock_bh(&adapter
->req_q_lock
);
1603 static void zfcp_fsf_open_wka_port_handler(struct zfcp_fsf_req
*req
)
1605 struct zfcp_wka_port
*wka_port
= req
->data
;
1606 struct fsf_qtcb_header
*header
= &req
->qtcb
->header
;
1608 if (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
) {
1609 wka_port
->status
= ZFCP_WKA_PORT_OFFLINE
;
1613 switch (header
->fsf_status
) {
1614 case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED
:
1615 dev_warn(&req
->adapter
->ccw_device
->dev
,
1616 "Opening WKA port 0x%x failed\n", wka_port
->d_id
);
1618 case FSF_ADAPTER_STATUS_AVAILABLE
:
1619 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1621 case FSF_ACCESS_DENIED
:
1622 wka_port
->status
= ZFCP_WKA_PORT_OFFLINE
;
1625 wka_port
->handle
= header
->port_handle
;
1627 case FSF_PORT_ALREADY_OPEN
:
1628 wka_port
->status
= ZFCP_WKA_PORT_ONLINE
;
1631 wake_up(&wka_port
->completion_wq
);
1635 * zfcp_fsf_open_wka_port - create and send open wka-port request
1636 * @wka_port: pointer to struct zfcp_wka_port
1637 * Returns: 0 on success, error otherwise
1639 int zfcp_fsf_open_wka_port(struct zfcp_wka_port
*wka_port
)
1641 struct qdio_buffer_element
*sbale
;
1642 struct zfcp_adapter
*adapter
= wka_port
->adapter
;
1643 struct zfcp_fsf_req
*req
;
1646 spin_lock_bh(&adapter
->req_q_lock
);
1647 if (zfcp_fsf_req_sbal_get(adapter
))
1650 req
= zfcp_fsf_req_create(adapter
, FSF_QTCB_OPEN_PORT_WITH_DID
,
1651 adapter
->pool
.erp_req
);
1653 if (unlikely(IS_ERR(req
))) {
1654 retval
= PTR_ERR(req
);
1658 req
->status
|= ZFCP_STATUS_FSFREQ_CLEANUP
;
1659 sbale
= zfcp_qdio_sbale_req(req
);
1660 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_READ
;
1661 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
1663 req
->handler
= zfcp_fsf_open_wka_port_handler
;
1664 req
->qtcb
->bottom
.support
.d_id
= wka_port
->d_id
;
1665 req
->data
= wka_port
;
1667 zfcp_fsf_start_timer(req
, ZFCP_FSF_REQUEST_TIMEOUT
);
1668 retval
= zfcp_fsf_req_send(req
);
1670 zfcp_fsf_req_free(req
);
1672 spin_unlock_bh(&adapter
->req_q_lock
);
1676 static void zfcp_fsf_close_wka_port_handler(struct zfcp_fsf_req
*req
)
1678 struct zfcp_wka_port
*wka_port
= req
->data
;
1680 if (req
->qtcb
->header
.fsf_status
== FSF_PORT_HANDLE_NOT_VALID
) {
1681 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1682 zfcp_erp_adapter_reopen(wka_port
->adapter
, 0, "fscwph1", req
);
1685 wka_port
->status
= ZFCP_WKA_PORT_OFFLINE
;
1686 wake_up(&wka_port
->completion_wq
);
1690 * zfcp_fsf_close_wka_port - create and send close wka port request
1691 * @erp_action: pointer to struct zfcp_erp_action
1692 * Returns: 0 on success, error otherwise
1694 int zfcp_fsf_close_wka_port(struct zfcp_wka_port
*wka_port
)
1696 struct qdio_buffer_element
*sbale
;
1697 struct zfcp_adapter
*adapter
= wka_port
->adapter
;
1698 struct zfcp_fsf_req
*req
;
1701 spin_lock_bh(&adapter
->req_q_lock
);
1702 if (zfcp_fsf_req_sbal_get(adapter
))
1705 req
= zfcp_fsf_req_create(adapter
, FSF_QTCB_CLOSE_PORT
,
1706 adapter
->pool
.erp_req
);
1708 if (unlikely(IS_ERR(req
))) {
1709 retval
= PTR_ERR(req
);
1713 req
->status
|= ZFCP_STATUS_FSFREQ_CLEANUP
;
1714 sbale
= zfcp_qdio_sbale_req(req
);
1715 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_READ
;
1716 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
1718 req
->handler
= zfcp_fsf_close_wka_port_handler
;
1719 req
->data
= wka_port
;
1720 req
->qtcb
->header
.port_handle
= wka_port
->handle
;
1722 zfcp_fsf_start_timer(req
, ZFCP_FSF_REQUEST_TIMEOUT
);
1723 retval
= zfcp_fsf_req_send(req
);
1725 zfcp_fsf_req_free(req
);
1727 spin_unlock_bh(&adapter
->req_q_lock
);
1731 static void zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req
*req
)
1733 struct zfcp_port
*port
= req
->data
;
1734 struct fsf_qtcb_header
*header
= &req
->qtcb
->header
;
1735 struct zfcp_unit
*unit
;
1737 if (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)
1740 switch (header
->fsf_status
) {
1741 case FSF_PORT_HANDLE_NOT_VALID
:
1742 zfcp_erp_adapter_reopen(port
->adapter
, 0, "fscpph1", req
);
1743 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1745 case FSF_ACCESS_DENIED
:
1746 zfcp_fsf_access_denied_port(req
, port
);
1748 case FSF_PORT_BOXED
:
1749 /* can't use generic zfcp_erp_modify_port_status because
1750 * ZFCP_STATUS_COMMON_OPEN must not be reset for the port */
1751 atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN
, &port
->status
);
1752 list_for_each_entry(unit
, &port
->unit_list_head
, list
)
1753 atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN
,
1755 zfcp_erp_port_boxed(port
, "fscpph2", req
);
1756 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
|
1757 ZFCP_STATUS_FSFREQ_RETRY
;
1760 case FSF_ADAPTER_STATUS_AVAILABLE
:
1761 switch (header
->fsf_status_qual
.word
[0]) {
1762 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE
:
1764 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED
:
1765 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1770 /* can't use generic zfcp_erp_modify_port_status because
1771 * ZFCP_STATUS_COMMON_OPEN must not be reset for the port
1773 atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN
, &port
->status
);
1774 list_for_each_entry(unit
, &port
->unit_list_head
, list
)
1775 atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN
,
1782 * zfcp_fsf_close_physical_port - close physical port
1783 * @erp_action: pointer to struct zfcp_erp_action
1784 * Returns: 0 on success
1786 int zfcp_fsf_close_physical_port(struct zfcp_erp_action
*erp_action
)
1788 struct qdio_buffer_element
*sbale
;
1789 struct zfcp_adapter
*adapter
= erp_action
->adapter
;
1790 struct zfcp_fsf_req
*req
;
1793 spin_lock_bh(&adapter
->req_q_lock
);
1794 if (zfcp_fsf_req_sbal_get(adapter
))
1797 req
= zfcp_fsf_req_create(adapter
, FSF_QTCB_CLOSE_PHYSICAL_PORT
,
1798 adapter
->pool
.erp_req
);
1801 retval
= PTR_ERR(req
);
1805 req
->status
|= ZFCP_STATUS_FSFREQ_CLEANUP
;
1806 sbale
= zfcp_qdio_sbale_req(req
);
1807 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_READ
;
1808 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
1810 req
->data
= erp_action
->port
;
1811 req
->qtcb
->header
.port_handle
= erp_action
->port
->handle
;
1812 req
->erp_action
= erp_action
;
1813 req
->handler
= zfcp_fsf_close_physical_port_handler
;
1814 erp_action
->fsf_req
= req
;
1816 zfcp_fsf_start_erp_timer(req
);
1817 retval
= zfcp_fsf_req_send(req
);
1819 zfcp_fsf_req_free(req
);
1820 erp_action
->fsf_req
= NULL
;
1823 spin_unlock_bh(&adapter
->req_q_lock
);
1827 static void zfcp_fsf_open_unit_handler(struct zfcp_fsf_req
*req
)
1829 struct zfcp_adapter
*adapter
= req
->adapter
;
1830 struct zfcp_unit
*unit
= req
->data
;
1831 struct fsf_qtcb_header
*header
= &req
->qtcb
->header
;
1832 struct fsf_qtcb_bottom_support
*bottom
= &req
->qtcb
->bottom
.support
;
1833 struct fsf_queue_designator
*queue_designator
=
1834 &header
->fsf_status_qual
.fsf_queue_designator
;
1835 int exclusive
, readwrite
;
1837 if (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)
1840 atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED
|
1841 ZFCP_STATUS_COMMON_ACCESS_BOXED
|
1842 ZFCP_STATUS_UNIT_SHARED
|
1843 ZFCP_STATUS_UNIT_READONLY
,
1846 switch (header
->fsf_status
) {
1848 case FSF_PORT_HANDLE_NOT_VALID
:
1849 zfcp_erp_adapter_reopen(unit
->port
->adapter
, 0, "fsouh_1", req
);
1851 case FSF_LUN_ALREADY_OPEN
:
1853 case FSF_ACCESS_DENIED
:
1854 zfcp_fsf_access_denied_unit(req
, unit
);
1855 atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED
, &unit
->status
);
1856 atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY
, &unit
->status
);
1858 case FSF_PORT_BOXED
:
1859 zfcp_erp_port_boxed(unit
->port
, "fsouh_2", req
);
1860 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
|
1861 ZFCP_STATUS_FSFREQ_RETRY
;
1863 case FSF_LUN_SHARING_VIOLATION
:
1864 if (header
->fsf_status_qual
.word
[0])
1865 dev_warn(&adapter
->ccw_device
->dev
,
1866 "LUN 0x%Lx on port 0x%Lx is already in "
1867 "use by CSS%d, MIF Image ID %x\n",
1868 (unsigned long long)unit
->fcp_lun
,
1869 (unsigned long long)unit
->port
->wwpn
,
1870 queue_designator
->cssid
,
1871 queue_designator
->hla
);
1873 zfcp_act_eval_err(adapter
,
1874 header
->fsf_status_qual
.word
[2]);
1875 zfcp_erp_unit_access_denied(unit
, "fsouh_3", req
);
1876 atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED
, &unit
->status
);
1877 atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY
, &unit
->status
);
1878 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1880 case FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED
:
1881 dev_warn(&adapter
->ccw_device
->dev
,
1882 "No handle is available for LUN "
1883 "0x%016Lx on port 0x%016Lx\n",
1884 (unsigned long long)unit
->fcp_lun
,
1885 (unsigned long long)unit
->port
->wwpn
);
1886 zfcp_erp_unit_failed(unit
, "fsouh_4", req
);
1888 case FSF_INVALID_COMMAND_OPTION
:
1889 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1891 case FSF_ADAPTER_STATUS_AVAILABLE
:
1892 switch (header
->fsf_status_qual
.word
[0]) {
1893 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE
:
1894 zfcp_test_link(unit
->port
);
1896 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED
:
1897 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1903 unit
->handle
= header
->lun_handle
;
1904 atomic_set_mask(ZFCP_STATUS_COMMON_OPEN
, &unit
->status
);
1906 if (!(adapter
->connection_features
& FSF_FEATURE_NPIV_MODE
) &&
1907 (adapter
->adapter_features
& FSF_FEATURE_LUN_SHARING
) &&
1908 !zfcp_ccw_priv_sch(adapter
)) {
1909 exclusive
= (bottom
->lun_access_info
&
1910 FSF_UNIT_ACCESS_EXCLUSIVE
);
1911 readwrite
= (bottom
->lun_access_info
&
1912 FSF_UNIT_ACCESS_OUTBOUND_TRANSFER
);
1915 atomic_set_mask(ZFCP_STATUS_UNIT_SHARED
,
1919 atomic_set_mask(ZFCP_STATUS_UNIT_READONLY
,
1921 dev_info(&adapter
->ccw_device
->dev
,
1922 "SCSI device at LUN 0x%016Lx on port "
1923 "0x%016Lx opened read-only\n",
1924 (unsigned long long)unit
->fcp_lun
,
1925 (unsigned long long)unit
->port
->wwpn
);
1928 if (exclusive
&& !readwrite
) {
1929 dev_err(&adapter
->ccw_device
->dev
,
1930 "Exclusive read-only access not "
1931 "supported (unit 0x%016Lx, "
1933 (unsigned long long)unit
->fcp_lun
,
1934 (unsigned long long)unit
->port
->wwpn
);
1935 zfcp_erp_unit_failed(unit
, "fsouh_5", req
);
1936 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1937 zfcp_erp_unit_shutdown(unit
, 0, "fsouh_6", req
);
1938 } else if (!exclusive
&& readwrite
) {
1939 dev_err(&adapter
->ccw_device
->dev
,
1940 "Shared read-write access not "
1941 "supported (unit 0x%016Lx, port "
1943 (unsigned long long)unit
->fcp_lun
,
1944 (unsigned long long)unit
->port
->wwpn
);
1945 zfcp_erp_unit_failed(unit
, "fsouh_7", req
);
1946 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1947 zfcp_erp_unit_shutdown(unit
, 0, "fsouh_8", req
);
1955 * zfcp_fsf_open_unit - open unit
1956 * @erp_action: pointer to struct zfcp_erp_action
1957 * Returns: 0 on success, error otherwise
1959 int zfcp_fsf_open_unit(struct zfcp_erp_action
*erp_action
)
1961 struct qdio_buffer_element
*sbale
;
1962 struct zfcp_adapter
*adapter
= erp_action
->adapter
;
1963 struct zfcp_fsf_req
*req
;
1966 spin_lock_bh(&adapter
->req_q_lock
);
1967 if (zfcp_fsf_req_sbal_get(adapter
))
1970 req
= zfcp_fsf_req_create(adapter
, FSF_QTCB_OPEN_LUN
,
1971 adapter
->pool
.erp_req
);
1974 retval
= PTR_ERR(req
);
1978 req
->status
|= ZFCP_STATUS_FSFREQ_CLEANUP
;
1979 sbale
= zfcp_qdio_sbale_req(req
);
1980 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_READ
;
1981 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
1983 req
->qtcb
->header
.port_handle
= erp_action
->port
->handle
;
1984 req
->qtcb
->bottom
.support
.fcp_lun
= erp_action
->unit
->fcp_lun
;
1985 req
->handler
= zfcp_fsf_open_unit_handler
;
1986 req
->data
= erp_action
->unit
;
1987 req
->erp_action
= erp_action
;
1988 erp_action
->fsf_req
= req
;
1990 if (!(adapter
->connection_features
& FSF_FEATURE_NPIV_MODE
))
1991 req
->qtcb
->bottom
.support
.option
= FSF_OPEN_LUN_SUPPRESS_BOXING
;
1993 zfcp_fsf_start_erp_timer(req
);
1994 retval
= zfcp_fsf_req_send(req
);
1996 zfcp_fsf_req_free(req
);
1997 erp_action
->fsf_req
= NULL
;
2000 spin_unlock_bh(&adapter
->req_q_lock
);
2004 static void zfcp_fsf_close_unit_handler(struct zfcp_fsf_req
*req
)
2006 struct zfcp_unit
*unit
= req
->data
;
2008 if (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)
2011 switch (req
->qtcb
->header
.fsf_status
) {
2012 case FSF_PORT_HANDLE_NOT_VALID
:
2013 zfcp_erp_adapter_reopen(unit
->port
->adapter
, 0, "fscuh_1", req
);
2014 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
2016 case FSF_LUN_HANDLE_NOT_VALID
:
2017 zfcp_erp_port_reopen(unit
->port
, 0, "fscuh_2", req
);
2018 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
2020 case FSF_PORT_BOXED
:
2021 zfcp_erp_port_boxed(unit
->port
, "fscuh_3", req
);
2022 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
|
2023 ZFCP_STATUS_FSFREQ_RETRY
;
2025 case FSF_ADAPTER_STATUS_AVAILABLE
:
2026 switch (req
->qtcb
->header
.fsf_status_qual
.word
[0]) {
2027 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE
:
2028 zfcp_test_link(unit
->port
);
2030 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED
:
2031 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
2036 atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN
, &unit
->status
);
2042 * zfcp_fsf_close_unit - close zfcp unit
2043 * @erp_action: pointer to struct zfcp_unit
2044 * Returns: 0 on success, error otherwise
2046 int zfcp_fsf_close_unit(struct zfcp_erp_action
*erp_action
)
2048 struct qdio_buffer_element
*sbale
;
2049 struct zfcp_adapter
*adapter
= erp_action
->adapter
;
2050 struct zfcp_fsf_req
*req
;
2053 spin_lock_bh(&adapter
->req_q_lock
);
2054 if (zfcp_fsf_req_sbal_get(adapter
))
2057 req
= zfcp_fsf_req_create(adapter
, FSF_QTCB_CLOSE_LUN
,
2058 adapter
->pool
.erp_req
);
2061 retval
= PTR_ERR(req
);
2065 req
->status
|= ZFCP_STATUS_FSFREQ_CLEANUP
;
2066 sbale
= zfcp_qdio_sbale_req(req
);
2067 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_READ
;
2068 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
2070 req
->qtcb
->header
.port_handle
= erp_action
->port
->handle
;
2071 req
->qtcb
->header
.lun_handle
= erp_action
->unit
->handle
;
2072 req
->handler
= zfcp_fsf_close_unit_handler
;
2073 req
->data
= erp_action
->unit
;
2074 req
->erp_action
= erp_action
;
2075 erp_action
->fsf_req
= req
;
2077 zfcp_fsf_start_erp_timer(req
);
2078 retval
= zfcp_fsf_req_send(req
);
2080 zfcp_fsf_req_free(req
);
2081 erp_action
->fsf_req
= NULL
;
2084 spin_unlock_bh(&adapter
->req_q_lock
);
2088 static void zfcp_fsf_update_lat(struct fsf_latency_record
*lat_rec
, u32 lat
)
2090 lat_rec
->sum
+= lat
;
2091 lat_rec
->min
= min(lat_rec
->min
, lat
);
2092 lat_rec
->max
= max(lat_rec
->max
, lat
);
2095 static void zfcp_fsf_req_latency(struct zfcp_fsf_req
*req
)
2097 struct fsf_qual_latency_info
*lat_inf
;
2098 struct latency_cont
*lat
;
2099 struct zfcp_unit
*unit
= req
->unit
;
2101 lat_inf
= &req
->qtcb
->prefix
.prot_status_qual
.latency_info
;
2103 switch (req
->qtcb
->bottom
.io
.data_direction
) {
2104 case FSF_DATADIR_READ
:
2105 lat
= &unit
->latencies
.read
;
2107 case FSF_DATADIR_WRITE
:
2108 lat
= &unit
->latencies
.write
;
2110 case FSF_DATADIR_CMND
:
2111 lat
= &unit
->latencies
.cmd
;
2117 spin_lock(&unit
->latencies
.lock
);
2118 zfcp_fsf_update_lat(&lat
->channel
, lat_inf
->channel_lat
);
2119 zfcp_fsf_update_lat(&lat
->fabric
, lat_inf
->fabric_lat
);
2121 spin_unlock(&unit
->latencies
.lock
);
2124 #ifdef CONFIG_BLK_DEV_IO_TRACE
2125 static void zfcp_fsf_trace_latency(struct zfcp_fsf_req
*fsf_req
)
2127 struct fsf_qual_latency_info
*lat_inf
;
2128 struct scsi_cmnd
*scsi_cmnd
= (struct scsi_cmnd
*)fsf_req
->data
;
2129 struct request
*req
= scsi_cmnd
->request
;
2130 struct zfcp_blk_drv_data trace
;
2131 int ticks
= fsf_req
->adapter
->timer_ticks
;
2134 trace
.magic
= ZFCP_BLK_DRV_DATA_MAGIC
;
2135 if (fsf_req
->adapter
->adapter_features
& FSF_FEATURE_MEASUREMENT_DATA
) {
2136 trace
.flags
|= ZFCP_BLK_LAT_VALID
;
2137 lat_inf
= &fsf_req
->qtcb
->prefix
.prot_status_qual
.latency_info
;
2138 trace
.channel_lat
= lat_inf
->channel_lat
* ticks
;
2139 trace
.fabric_lat
= lat_inf
->fabric_lat
* ticks
;
2141 if (fsf_req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)
2142 trace
.flags
|= ZFCP_BLK_REQ_ERROR
;
2143 trace
.inb_usage
= fsf_req
->qdio_inb_usage
;
2144 trace
.outb_usage
= fsf_req
->qdio_outb_usage
;
2146 blk_add_driver_data(req
->q
, req
, &trace
, sizeof(trace
));
2149 static inline void zfcp_fsf_trace_latency(struct zfcp_fsf_req
*fsf_req
)
2154 static void zfcp_fsf_send_fcp_command_task_handler(struct zfcp_fsf_req
*req
)
2156 struct scsi_cmnd
*scpnt
;
2157 struct fcp_rsp_iu
*fcp_rsp_iu
= (struct fcp_rsp_iu
*)
2158 &(req
->qtcb
->bottom
.io
.fcp_rsp
);
2160 char *fcp_rsp_info
= (unsigned char *) &fcp_rsp_iu
[1];
2161 unsigned long flags
;
2163 read_lock_irqsave(&req
->adapter
->abort_lock
, flags
);
2166 if (unlikely(!scpnt
)) {
2167 read_unlock_irqrestore(&req
->adapter
->abort_lock
, flags
);
2171 if (unlikely(req
->status
& ZFCP_STATUS_FSFREQ_ABORTED
)) {
2172 set_host_byte(scpnt
, DID_SOFT_ERROR
);
2173 goto skip_fsfstatus
;
2176 if (unlikely(req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)) {
2177 set_host_byte(scpnt
, DID_ERROR
);
2178 goto skip_fsfstatus
;
2181 set_msg_byte(scpnt
, COMMAND_COMPLETE
);
2183 scpnt
->result
|= fcp_rsp_iu
->scsi_status
;
2185 if (req
->adapter
->adapter_features
& FSF_FEATURE_MEASUREMENT_DATA
)
2186 zfcp_fsf_req_latency(req
);
2188 zfcp_fsf_trace_latency(req
);
2190 if (unlikely(fcp_rsp_iu
->validity
.bits
.fcp_rsp_len_valid
)) {
2191 if (fcp_rsp_info
[3] == RSP_CODE_GOOD
)
2192 set_host_byte(scpnt
, DID_OK
);
2194 set_host_byte(scpnt
, DID_ERROR
);
2195 goto skip_fsfstatus
;
2199 if (unlikely(fcp_rsp_iu
->validity
.bits
.fcp_sns_len_valid
)) {
2200 sns_len
= FSF_FCP_RSP_SIZE
- sizeof(struct fcp_rsp_iu
) +
2201 fcp_rsp_iu
->fcp_rsp_len
;
2202 sns_len
= min(sns_len
, (u32
) SCSI_SENSE_BUFFERSIZE
);
2203 sns_len
= min(sns_len
, fcp_rsp_iu
->fcp_sns_len
);
2205 memcpy(scpnt
->sense_buffer
,
2206 zfcp_get_fcp_sns_info_ptr(fcp_rsp_iu
), sns_len
);
2209 if (unlikely(fcp_rsp_iu
->validity
.bits
.fcp_resid_under
)) {
2210 scsi_set_resid(scpnt
, fcp_rsp_iu
->fcp_resid
);
2211 if (scsi_bufflen(scpnt
) - scsi_get_resid(scpnt
) <
2213 set_host_byte(scpnt
, DID_ERROR
);
2216 if (scpnt
->result
!= 0)
2217 zfcp_scsi_dbf_event_result("erro", 3, req
->adapter
, scpnt
, req
);
2218 else if (scpnt
->retries
> 0)
2219 zfcp_scsi_dbf_event_result("retr", 4, req
->adapter
, scpnt
, req
);
2221 zfcp_scsi_dbf_event_result("norm", 6, req
->adapter
, scpnt
, req
);
2223 scpnt
->host_scribble
= NULL
;
2224 (scpnt
->scsi_done
) (scpnt
);
2226 * We must hold this lock until scsi_done has been called.
2227 * Otherwise we may call scsi_done after abort regarding this
2228 * command has completed.
2229 * Note: scsi_done must not block!
2231 read_unlock_irqrestore(&req
->adapter
->abort_lock
, flags
);
2234 static void zfcp_fsf_send_fcp_ctm_handler(struct zfcp_fsf_req
*req
)
2236 struct fcp_rsp_iu
*fcp_rsp_iu
= (struct fcp_rsp_iu
*)
2237 &(req
->qtcb
->bottom
.io
.fcp_rsp
);
2238 char *fcp_rsp_info
= (unsigned char *) &fcp_rsp_iu
[1];
2240 if ((fcp_rsp_info
[3] != RSP_CODE_GOOD
) ||
2241 (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
))
2242 req
->status
|= ZFCP_STATUS_FSFREQ_TMFUNCFAILED
;
2246 static void zfcp_fsf_send_fcp_command_handler(struct zfcp_fsf_req
*req
)
2248 struct zfcp_unit
*unit
;
2249 struct fsf_qtcb_header
*header
= &req
->qtcb
->header
;
2251 if (unlikely(req
->status
& ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT
))
2256 if (unlikely(req
->status
& ZFCP_STATUS_FSFREQ_ERROR
))
2257 goto skip_fsfstatus
;
2259 switch (header
->fsf_status
) {
2260 case FSF_HANDLE_MISMATCH
:
2261 case FSF_PORT_HANDLE_NOT_VALID
:
2262 zfcp_erp_adapter_reopen(unit
->port
->adapter
, 0, "fssfch1", req
);
2263 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
2265 case FSF_FCPLUN_NOT_VALID
:
2266 case FSF_LUN_HANDLE_NOT_VALID
:
2267 zfcp_erp_port_reopen(unit
->port
, 0, "fssfch2", req
);
2268 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
2270 case FSF_SERVICE_CLASS_NOT_SUPPORTED
:
2271 zfcp_fsf_class_not_supp(req
);
2273 case FSF_ACCESS_DENIED
:
2274 zfcp_fsf_access_denied_unit(req
, unit
);
2276 case FSF_DIRECTION_INDICATOR_NOT_VALID
:
2277 dev_err(&req
->adapter
->ccw_device
->dev
,
2278 "Incorrect direction %d, unit 0x%016Lx on port "
2279 "0x%016Lx closed\n",
2280 req
->qtcb
->bottom
.io
.data_direction
,
2281 (unsigned long long)unit
->fcp_lun
,
2282 (unsigned long long)unit
->port
->wwpn
);
2283 zfcp_erp_adapter_shutdown(unit
->port
->adapter
, 0, "fssfch3",
2285 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
2287 case FSF_CMND_LENGTH_NOT_VALID
:
2288 dev_err(&req
->adapter
->ccw_device
->dev
,
2289 "Incorrect CDB length %d, unit 0x%016Lx on "
2290 "port 0x%016Lx closed\n",
2291 req
->qtcb
->bottom
.io
.fcp_cmnd_length
,
2292 (unsigned long long)unit
->fcp_lun
,
2293 (unsigned long long)unit
->port
->wwpn
);
2294 zfcp_erp_adapter_shutdown(unit
->port
->adapter
, 0, "fssfch4",
2296 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
2298 case FSF_PORT_BOXED
:
2299 zfcp_erp_port_boxed(unit
->port
, "fssfch5", req
);
2300 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
|
2301 ZFCP_STATUS_FSFREQ_RETRY
;
2304 zfcp_erp_unit_boxed(unit
, "fssfch6", req
);
2305 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
|
2306 ZFCP_STATUS_FSFREQ_RETRY
;
2308 case FSF_ADAPTER_STATUS_AVAILABLE
:
2309 if (header
->fsf_status_qual
.word
[0] ==
2310 FSF_SQ_INVOKE_LINK_TEST_PROCEDURE
)
2311 zfcp_test_link(unit
->port
);
2312 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
2316 if (req
->status
& ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT
)
2317 zfcp_fsf_send_fcp_ctm_handler(req
);
2319 zfcp_fsf_send_fcp_command_task_handler(req
);
2321 zfcp_unit_put(unit
);
2325 static void zfcp_set_fcp_dl(struct fcp_cmnd_iu
*fcp_cmd
, u32 fcp_dl
)
2330 * fcp_dl_addr = start address of fcp_cmnd structure +
2331 * size of fixed part + size of dynamically sized add_dcp_cdb field
2332 * SEE FCP-2 documentation
2334 fcp_dl_ptr
= (u32
*) ((unsigned char *) &fcp_cmd
[1] +
2335 (fcp_cmd
->add_fcp_cdb_length
<< 2));
2336 *fcp_dl_ptr
= fcp_dl
;
2340 * zfcp_fsf_send_fcp_command_task - initiate an FCP command (for a SCSI command)
2341 * @unit: unit where command is sent to
2342 * @scsi_cmnd: scsi command to be sent
2344 int zfcp_fsf_send_fcp_command_task(struct zfcp_unit
*unit
,
2345 struct scsi_cmnd
*scsi_cmnd
)
2347 struct zfcp_fsf_req
*req
;
2348 struct fcp_cmnd_iu
*fcp_cmnd_iu
;
2349 unsigned int sbtype
= SBAL_FLAGS0_TYPE_READ
;
2350 int real_bytes
, retval
= -EIO
;
2351 struct zfcp_adapter
*adapter
= unit
->port
->adapter
;
2353 if (unlikely(!(atomic_read(&unit
->status
) &
2354 ZFCP_STATUS_COMMON_UNBLOCKED
)))
2357 spin_lock(&adapter
->req_q_lock
);
2358 if (atomic_read(&adapter
->req_q
.count
) <= 0) {
2359 atomic_inc(&adapter
->qdio_outb_full
);
2363 req
= zfcp_fsf_req_create(adapter
, FSF_QTCB_FCP_CMND
,
2364 adapter
->pool
.scsi_req
);
2367 retval
= PTR_ERR(req
);
2371 req
->status
|= ZFCP_STATUS_FSFREQ_CLEANUP
;
2372 zfcp_unit_get(unit
);
2374 req
->data
= scsi_cmnd
;
2375 req
->handler
= zfcp_fsf_send_fcp_command_handler
;
2376 req
->qtcb
->header
.lun_handle
= unit
->handle
;
2377 req
->qtcb
->header
.port_handle
= unit
->port
->handle
;
2378 req
->qtcb
->bottom
.io
.service_class
= FSF_CLASS_3
;
2380 scsi_cmnd
->host_scribble
= (unsigned char *) req
->req_id
;
2382 fcp_cmnd_iu
= (struct fcp_cmnd_iu
*) &(req
->qtcb
->bottom
.io
.fcp_cmnd
);
2383 fcp_cmnd_iu
->fcp_lun
= unit
->fcp_lun
;
2385 * set depending on data direction:
2386 * data direction bits in SBALE (SB Type)
2387 * data direction bits in QTCB
2388 * data direction bits in FCP_CMND IU
2390 switch (scsi_cmnd
->sc_data_direction
) {
2392 req
->qtcb
->bottom
.io
.data_direction
= FSF_DATADIR_CMND
;
2394 case DMA_FROM_DEVICE
:
2395 req
->qtcb
->bottom
.io
.data_direction
= FSF_DATADIR_READ
;
2396 fcp_cmnd_iu
->rddata
= 1;
2399 req
->qtcb
->bottom
.io
.data_direction
= FSF_DATADIR_WRITE
;
2400 sbtype
= SBAL_FLAGS0_TYPE_WRITE
;
2401 fcp_cmnd_iu
->wddata
= 1;
2403 case DMA_BIDIRECTIONAL
:
2404 goto failed_scsi_cmnd
;
2407 if (likely((scsi_cmnd
->device
->simple_tags
) ||
2408 ((atomic_read(&unit
->status
) & ZFCP_STATUS_UNIT_READONLY
) &&
2409 (atomic_read(&unit
->status
) & ZFCP_STATUS_UNIT_SHARED
))))
2410 fcp_cmnd_iu
->task_attribute
= SIMPLE_Q
;
2412 fcp_cmnd_iu
->task_attribute
= UNTAGGED
;
2414 if (unlikely(scsi_cmnd
->cmd_len
> FCP_CDB_LENGTH
))
2415 fcp_cmnd_iu
->add_fcp_cdb_length
=
2416 (scsi_cmnd
->cmd_len
- FCP_CDB_LENGTH
) >> 2;
2418 memcpy(fcp_cmnd_iu
->fcp_cdb
, scsi_cmnd
->cmnd
, scsi_cmnd
->cmd_len
);
2420 req
->qtcb
->bottom
.io
.fcp_cmnd_length
= sizeof(struct fcp_cmnd_iu
) +
2421 fcp_cmnd_iu
->add_fcp_cdb_length
+ sizeof(u32
);
2423 real_bytes
= zfcp_qdio_sbals_from_sg(req
, sbtype
,
2424 scsi_sglist(scsi_cmnd
),
2425 FSF_MAX_SBALS_PER_REQ
);
2426 if (unlikely(real_bytes
< 0)) {
2427 if (req
->sbal_number
>= FSF_MAX_SBALS_PER_REQ
) {
2428 dev_err(&adapter
->ccw_device
->dev
,
2429 "Oversize data package, unit 0x%016Lx "
2430 "on port 0x%016Lx closed\n",
2431 (unsigned long long)unit
->fcp_lun
,
2432 (unsigned long long)unit
->port
->wwpn
);
2433 zfcp_erp_unit_shutdown(unit
, 0, "fssfct1", req
);
2436 goto failed_scsi_cmnd
;
2439 zfcp_set_fcp_dl(fcp_cmnd_iu
, real_bytes
);
2441 retval
= zfcp_fsf_req_send(req
);
2442 if (unlikely(retval
))
2443 goto failed_scsi_cmnd
;
2448 zfcp_unit_put(unit
);
2449 zfcp_fsf_req_free(req
);
2450 scsi_cmnd
->host_scribble
= NULL
;
2452 spin_unlock(&adapter
->req_q_lock
);
2457 * zfcp_fsf_send_fcp_ctm - send SCSI task management command
2458 * @unit: pointer to struct zfcp_unit
2459 * @tm_flags: unsigned byte for task management flags
2460 * Returns: on success pointer to struct fsf_req, NULL otherwise
2462 struct zfcp_fsf_req
*zfcp_fsf_send_fcp_ctm(struct zfcp_unit
*unit
, u8 tm_flags
)
2464 struct qdio_buffer_element
*sbale
;
2465 struct zfcp_fsf_req
*req
= NULL
;
2466 struct fcp_cmnd_iu
*fcp_cmnd_iu
;
2467 struct zfcp_adapter
*adapter
= unit
->port
->adapter
;
2469 if (unlikely(!(atomic_read(&unit
->status
) &
2470 ZFCP_STATUS_COMMON_UNBLOCKED
)))
2473 spin_lock_bh(&adapter
->req_q_lock
);
2474 if (zfcp_fsf_req_sbal_get(adapter
))
2477 req
= zfcp_fsf_req_create(adapter
, FSF_QTCB_FCP_CMND
,
2478 adapter
->pool
.scsi_req
);
2485 req
->status
|= ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT
;
2487 req
->handler
= zfcp_fsf_send_fcp_command_handler
;
2488 req
->qtcb
->header
.lun_handle
= unit
->handle
;
2489 req
->qtcb
->header
.port_handle
= unit
->port
->handle
;
2490 req
->qtcb
->bottom
.io
.data_direction
= FSF_DATADIR_CMND
;
2491 req
->qtcb
->bottom
.io
.service_class
= FSF_CLASS_3
;
2492 req
->qtcb
->bottom
.io
.fcp_cmnd_length
= sizeof(struct fcp_cmnd_iu
) +
2495 sbale
= zfcp_qdio_sbale_req(req
);
2496 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_WRITE
;
2497 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
2499 fcp_cmnd_iu
= (struct fcp_cmnd_iu
*) &req
->qtcb
->bottom
.io
.fcp_cmnd
;
2500 fcp_cmnd_iu
->fcp_lun
= unit
->fcp_lun
;
2501 fcp_cmnd_iu
->task_management_flags
= tm_flags
;
2503 zfcp_fsf_start_timer(req
, ZFCP_SCSI_ER_TIMEOUT
);
2504 if (!zfcp_fsf_req_send(req
))
2507 zfcp_fsf_req_free(req
);
2510 spin_unlock_bh(&adapter
->req_q_lock
);
2514 static void zfcp_fsf_control_file_handler(struct zfcp_fsf_req
*req
)
2519 * zfcp_fsf_control_file - control file upload/download
2520 * @adapter: pointer to struct zfcp_adapter
2521 * @fsf_cfdc: pointer to struct zfcp_fsf_cfdc
2522 * Returns: on success pointer to struct zfcp_fsf_req, NULL otherwise
2524 struct zfcp_fsf_req
*zfcp_fsf_control_file(struct zfcp_adapter
*adapter
,
2525 struct zfcp_fsf_cfdc
*fsf_cfdc
)
2527 struct qdio_buffer_element
*sbale
;
2528 struct zfcp_fsf_req
*req
= NULL
;
2529 struct fsf_qtcb_bottom_support
*bottom
;
2530 int direction
, retval
= -EIO
, bytes
;
2532 if (!(adapter
->adapter_features
& FSF_FEATURE_CFDC
))
2533 return ERR_PTR(-EOPNOTSUPP
);
2535 switch (fsf_cfdc
->command
) {
2536 case FSF_QTCB_DOWNLOAD_CONTROL_FILE
:
2537 direction
= SBAL_FLAGS0_TYPE_WRITE
;
2539 case FSF_QTCB_UPLOAD_CONTROL_FILE
:
2540 direction
= SBAL_FLAGS0_TYPE_READ
;
2543 return ERR_PTR(-EINVAL
);
2546 spin_lock_bh(&adapter
->req_q_lock
);
2547 if (zfcp_fsf_req_sbal_get(adapter
))
2550 req
= zfcp_fsf_req_create(adapter
, fsf_cfdc
->command
, NULL
);
2556 req
->handler
= zfcp_fsf_control_file_handler
;
2558 sbale
= zfcp_qdio_sbale_req(req
);
2559 sbale
[0].flags
|= direction
;
2561 bottom
= &req
->qtcb
->bottom
.support
;
2562 bottom
->operation_subtype
= FSF_CFDC_OPERATION_SUBTYPE
;
2563 bottom
->option
= fsf_cfdc
->option
;
2565 bytes
= zfcp_qdio_sbals_from_sg(req
, direction
, fsf_cfdc
->sg
,
2566 FSF_MAX_SBALS_PER_REQ
);
2567 if (bytes
!= ZFCP_CFDC_MAX_SIZE
) {
2568 zfcp_fsf_req_free(req
);
2572 zfcp_fsf_start_timer(req
, ZFCP_FSF_REQUEST_TIMEOUT
);
2573 retval
= zfcp_fsf_req_send(req
);
2575 spin_unlock_bh(&adapter
->req_q_lock
);
2578 wait_for_completion(&req
->completion
);
2581 return ERR_PTR(retval
);
2585 * zfcp_fsf_reqid_check - validate req_id contained in SBAL returned by QDIO
2586 * @adapter: pointer to struct zfcp_adapter
2587 * @sbal_idx: response queue index of SBAL to be processed
2589 void zfcp_fsf_reqid_check(struct zfcp_adapter
*adapter
, int sbal_idx
)
2591 struct qdio_buffer
*sbal
= adapter
->resp_q
.sbal
[sbal_idx
];
2592 struct qdio_buffer_element
*sbale
;
2593 struct zfcp_fsf_req
*fsf_req
;
2594 unsigned long flags
, req_id
;
2597 for (idx
= 0; idx
< QDIO_MAX_ELEMENTS_PER_BUFFER
; idx
++) {
2599 sbale
= &sbal
->element
[idx
];
2600 req_id
= (unsigned long) sbale
->addr
;
2601 spin_lock_irqsave(&adapter
->req_list_lock
, flags
);
2602 fsf_req
= zfcp_reqlist_find(adapter
, req_id
);
2606 * Unknown request means that we have potentially memory
2607 * corruption and must stop the machine immediately.
2609 panic("error: unknown req_id (%lx) on adapter %s.\n",
2610 req_id
, dev_name(&adapter
->ccw_device
->dev
));
2612 list_del(&fsf_req
->list
);
2613 spin_unlock_irqrestore(&adapter
->req_list_lock
, flags
);
2615 fsf_req
->sbal_response
= sbal_idx
;
2616 fsf_req
->qdio_inb_usage
= atomic_read(&adapter
->resp_q
.count
);
2617 zfcp_fsf_req_complete(fsf_req
);
2619 if (likely(sbale
->flags
& SBAL_FLAGS_LAST_ENTRY
))