4 * Implementation of FSF commands.
6 * Copyright IBM Corporation 2002, 2008
9 #define KMSG_COMPONENT "zfcp"
10 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
12 #include <linux/blktrace_api.h>
15 static void zfcp_fsf_request_timeout_handler(unsigned long data
)
17 struct zfcp_adapter
*adapter
= (struct zfcp_adapter
*) data
;
18 zfcp_erp_adapter_reopen(adapter
, ZFCP_STATUS_COMMON_ERP_FAILED
, 62,
22 static void zfcp_fsf_start_timer(struct zfcp_fsf_req
*fsf_req
,
23 unsigned long timeout
)
25 fsf_req
->timer
.function
= zfcp_fsf_request_timeout_handler
;
26 fsf_req
->timer
.data
= (unsigned long) fsf_req
->adapter
;
27 fsf_req
->timer
.expires
= jiffies
+ timeout
;
28 add_timer(&fsf_req
->timer
);
31 static void zfcp_fsf_start_erp_timer(struct zfcp_fsf_req
*fsf_req
)
33 BUG_ON(!fsf_req
->erp_action
);
34 fsf_req
->timer
.function
= zfcp_erp_timeout_handler
;
35 fsf_req
->timer
.data
= (unsigned long) fsf_req
->erp_action
;
36 fsf_req
->timer
.expires
= jiffies
+ 30 * HZ
;
37 add_timer(&fsf_req
->timer
);
40 /* association between FSF command and FSF QTCB type */
41 static u32 fsf_qtcb_type
[] = {
42 [FSF_QTCB_FCP_CMND
] = FSF_IO_COMMAND
,
43 [FSF_QTCB_ABORT_FCP_CMND
] = FSF_SUPPORT_COMMAND
,
44 [FSF_QTCB_OPEN_PORT_WITH_DID
] = FSF_SUPPORT_COMMAND
,
45 [FSF_QTCB_OPEN_LUN
] = FSF_SUPPORT_COMMAND
,
46 [FSF_QTCB_CLOSE_LUN
] = FSF_SUPPORT_COMMAND
,
47 [FSF_QTCB_CLOSE_PORT
] = FSF_SUPPORT_COMMAND
,
48 [FSF_QTCB_CLOSE_PHYSICAL_PORT
] = FSF_SUPPORT_COMMAND
,
49 [FSF_QTCB_SEND_ELS
] = FSF_SUPPORT_COMMAND
,
50 [FSF_QTCB_SEND_GENERIC
] = FSF_SUPPORT_COMMAND
,
51 [FSF_QTCB_EXCHANGE_CONFIG_DATA
] = FSF_CONFIG_COMMAND
,
52 [FSF_QTCB_EXCHANGE_PORT_DATA
] = FSF_PORT_COMMAND
,
53 [FSF_QTCB_DOWNLOAD_CONTROL_FILE
] = FSF_SUPPORT_COMMAND
,
54 [FSF_QTCB_UPLOAD_CONTROL_FILE
] = FSF_SUPPORT_COMMAND
57 static void zfcp_act_eval_err(struct zfcp_adapter
*adapter
, u32 table
)
59 u16 subtable
= table
>> 16;
60 u16 rule
= table
& 0xffff;
61 const char *act_type
[] = { "unknown", "OS", "WWPN", "DID", "LUN" };
63 if (subtable
&& subtable
< ARRAY_SIZE(act_type
))
64 dev_warn(&adapter
->ccw_device
->dev
,
65 "Access denied according to ACT rule type %s, "
66 "rule %d\n", act_type
[subtable
], rule
);
69 static void zfcp_fsf_access_denied_port(struct zfcp_fsf_req
*req
,
70 struct zfcp_port
*port
)
72 struct fsf_qtcb_header
*header
= &req
->qtcb
->header
;
73 dev_warn(&req
->adapter
->ccw_device
->dev
,
74 "Access denied to port 0x%016Lx\n",
75 (unsigned long long)port
->wwpn
);
76 zfcp_act_eval_err(req
->adapter
, header
->fsf_status_qual
.halfword
[0]);
77 zfcp_act_eval_err(req
->adapter
, header
->fsf_status_qual
.halfword
[1]);
78 zfcp_erp_port_access_denied(port
, 55, req
);
79 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
82 static void zfcp_fsf_access_denied_unit(struct zfcp_fsf_req
*req
,
83 struct zfcp_unit
*unit
)
85 struct fsf_qtcb_header
*header
= &req
->qtcb
->header
;
86 dev_warn(&req
->adapter
->ccw_device
->dev
,
87 "Access denied to unit 0x%016Lx on port 0x%016Lx\n",
88 (unsigned long long)unit
->fcp_lun
,
89 (unsigned long long)unit
->port
->wwpn
);
90 zfcp_act_eval_err(req
->adapter
, header
->fsf_status_qual
.halfword
[0]);
91 zfcp_act_eval_err(req
->adapter
, header
->fsf_status_qual
.halfword
[1]);
92 zfcp_erp_unit_access_denied(unit
, 59, req
);
93 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
96 static void zfcp_fsf_class_not_supp(struct zfcp_fsf_req
*req
)
98 dev_err(&req
->adapter
->ccw_device
->dev
, "FCP device not "
99 "operational because of an unsupported FC class\n");
100 zfcp_erp_adapter_shutdown(req
->adapter
, 0, 123, req
);
101 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
105 * zfcp_fsf_req_free - free memory used by fsf request
106 * @fsf_req: pointer to struct zfcp_fsf_req
108 void zfcp_fsf_req_free(struct zfcp_fsf_req
*req
)
110 if (likely(req
->pool
)) {
111 mempool_free(req
, req
->pool
);
116 kmem_cache_free(zfcp_data
.fsf_req_qtcb_cache
, req
);
122 * zfcp_fsf_req_dismiss_all - dismiss all fsf requests
123 * @adapter: pointer to struct zfcp_adapter
125 * Never ever call this without shutting down the adapter first.
126 * Otherwise the adapter would continue using and corrupting s390 storage.
127 * Included BUG_ON() call to ensure this is done.
128 * ERP is supposed to be the only user of this function.
130 void zfcp_fsf_req_dismiss_all(struct zfcp_adapter
*adapter
)
132 struct zfcp_fsf_req
*req
, *tmp
;
134 LIST_HEAD(remove_queue
);
137 BUG_ON(atomic_read(&adapter
->status
) & ZFCP_STATUS_ADAPTER_QDIOUP
);
138 spin_lock_irqsave(&adapter
->req_list_lock
, flags
);
139 for (i
= 0; i
< REQUEST_LIST_SIZE
; i
++)
140 list_splice_init(&adapter
->req_list
[i
], &remove_queue
);
141 spin_unlock_irqrestore(&adapter
->req_list_lock
, flags
);
143 list_for_each_entry_safe(req
, tmp
, &remove_queue
, list
) {
144 list_del(&req
->list
);
145 req
->status
|= ZFCP_STATUS_FSFREQ_DISMISSED
;
146 zfcp_fsf_req_complete(req
);
150 static void zfcp_fsf_status_read_port_closed(struct zfcp_fsf_req
*req
)
152 struct fsf_status_read_buffer
*sr_buf
= req
->data
;
153 struct zfcp_adapter
*adapter
= req
->adapter
;
154 struct zfcp_port
*port
;
155 int d_id
= sr_buf
->d_id
& ZFCP_DID_MASK
;
158 read_lock_irqsave(&zfcp_data
.config_lock
, flags
);
159 list_for_each_entry(port
, &adapter
->port_list_head
, list
)
160 if (port
->d_id
== d_id
) {
161 read_unlock_irqrestore(&zfcp_data
.config_lock
, flags
);
162 switch (sr_buf
->status_subtype
) {
163 case FSF_STATUS_READ_SUB_CLOSE_PHYS_PORT
:
164 zfcp_erp_port_reopen(port
, 0, 101, req
);
166 case FSF_STATUS_READ_SUB_ERROR_PORT
:
167 zfcp_erp_port_shutdown(port
, 0, 122, req
);
172 read_unlock_irqrestore(&zfcp_data
.config_lock
, flags
);
175 static void zfcp_fsf_link_down_info_eval(struct zfcp_fsf_req
*req
, u8 id
,
176 struct fsf_link_down_info
*link_down
)
178 struct zfcp_adapter
*adapter
= req
->adapter
;
180 if (atomic_read(&adapter
->status
) & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED
)
183 atomic_set_mask(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED
, &adapter
->status
);
188 switch (link_down
->error_code
) {
189 case FSF_PSQ_LINK_NO_LIGHT
:
190 dev_warn(&req
->adapter
->ccw_device
->dev
,
191 "There is no light signal from the local "
192 "fibre channel cable\n");
194 case FSF_PSQ_LINK_WRAP_PLUG
:
195 dev_warn(&req
->adapter
->ccw_device
->dev
,
196 "There is a wrap plug instead of a fibre "
199 case FSF_PSQ_LINK_NO_FCP
:
200 dev_warn(&req
->adapter
->ccw_device
->dev
,
201 "The adjacent fibre channel node does not "
204 case FSF_PSQ_LINK_FIRMWARE_UPDATE
:
205 dev_warn(&req
->adapter
->ccw_device
->dev
,
206 "The FCP device is suspended because of a "
207 "firmware update\n");
209 case FSF_PSQ_LINK_INVALID_WWPN
:
210 dev_warn(&req
->adapter
->ccw_device
->dev
,
211 "The FCP device detected a WWPN that is "
212 "duplicate or not valid\n");
214 case FSF_PSQ_LINK_NO_NPIV_SUPPORT
:
215 dev_warn(&req
->adapter
->ccw_device
->dev
,
216 "The fibre channel fabric does not support NPIV\n");
218 case FSF_PSQ_LINK_NO_FCP_RESOURCES
:
219 dev_warn(&req
->adapter
->ccw_device
->dev
,
220 "The FCP adapter cannot support more NPIV ports\n");
222 case FSF_PSQ_LINK_NO_FABRIC_RESOURCES
:
223 dev_warn(&req
->adapter
->ccw_device
->dev
,
224 "The adjacent switch cannot support "
225 "more NPIV ports\n");
227 case FSF_PSQ_LINK_FABRIC_LOGIN_UNABLE
:
228 dev_warn(&req
->adapter
->ccw_device
->dev
,
229 "The FCP adapter could not log in to the "
230 "fibre channel fabric\n");
232 case FSF_PSQ_LINK_WWPN_ASSIGNMENT_CORRUPTED
:
233 dev_warn(&req
->adapter
->ccw_device
->dev
,
234 "The WWPN assignment file on the FCP adapter "
235 "has been damaged\n");
237 case FSF_PSQ_LINK_MODE_TABLE_CURRUPTED
:
238 dev_warn(&req
->adapter
->ccw_device
->dev
,
239 "The mode table on the FCP adapter "
240 "has been damaged\n");
242 case FSF_PSQ_LINK_NO_WWPN_ASSIGNMENT
:
243 dev_warn(&req
->adapter
->ccw_device
->dev
,
244 "All NPIV ports on the FCP adapter have "
248 dev_warn(&req
->adapter
->ccw_device
->dev
,
249 "The link between the FCP adapter and "
250 "the FC fabric is down\n");
253 zfcp_erp_adapter_failed(adapter
, id
, req
);
256 static void zfcp_fsf_status_read_link_down(struct zfcp_fsf_req
*req
)
258 struct fsf_status_read_buffer
*sr_buf
= req
->data
;
259 struct fsf_link_down_info
*ldi
=
260 (struct fsf_link_down_info
*) &sr_buf
->payload
;
262 switch (sr_buf
->status_subtype
) {
263 case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK
:
264 zfcp_fsf_link_down_info_eval(req
, 38, ldi
);
266 case FSF_STATUS_READ_SUB_FDISC_FAILED
:
267 zfcp_fsf_link_down_info_eval(req
, 39, ldi
);
269 case FSF_STATUS_READ_SUB_FIRMWARE_UPDATE
:
270 zfcp_fsf_link_down_info_eval(req
, 40, NULL
);
274 static void zfcp_fsf_status_read_handler(struct zfcp_fsf_req
*req
)
276 struct zfcp_adapter
*adapter
= req
->adapter
;
277 struct fsf_status_read_buffer
*sr_buf
= req
->data
;
279 if (req
->status
& ZFCP_STATUS_FSFREQ_DISMISSED
) {
280 zfcp_hba_dbf_event_fsf_unsol("dism", adapter
, sr_buf
);
281 mempool_free(sr_buf
, adapter
->pool
.data_status_read
);
282 zfcp_fsf_req_free(req
);
286 zfcp_hba_dbf_event_fsf_unsol("read", adapter
, sr_buf
);
288 switch (sr_buf
->status_type
) {
289 case FSF_STATUS_READ_PORT_CLOSED
:
290 zfcp_fsf_status_read_port_closed(req
);
292 case FSF_STATUS_READ_INCOMING_ELS
:
293 zfcp_fc_incoming_els(req
);
295 case FSF_STATUS_READ_SENSE_DATA_AVAIL
:
297 case FSF_STATUS_READ_BIT_ERROR_THRESHOLD
:
298 dev_warn(&adapter
->ccw_device
->dev
,
299 "The error threshold for checksum statistics "
300 "has been exceeded\n");
301 zfcp_hba_dbf_event_berr(adapter
, req
);
303 case FSF_STATUS_READ_LINK_DOWN
:
304 zfcp_fsf_status_read_link_down(req
);
306 case FSF_STATUS_READ_LINK_UP
:
307 dev_info(&adapter
->ccw_device
->dev
,
308 "The local link has been restored\n");
309 /* All ports should be marked as ready to run again */
310 zfcp_erp_modify_adapter_status(adapter
, 30, NULL
,
311 ZFCP_STATUS_COMMON_RUNNING
,
313 zfcp_erp_adapter_reopen(adapter
,
314 ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED
|
315 ZFCP_STATUS_COMMON_ERP_FAILED
,
318 case FSF_STATUS_READ_NOTIFICATION_LOST
:
319 if (sr_buf
->status_subtype
& FSF_STATUS_READ_SUB_ACT_UPDATED
)
320 zfcp_erp_adapter_access_changed(adapter
, 135, req
);
321 if (sr_buf
->status_subtype
& FSF_STATUS_READ_SUB_INCOMING_ELS
)
322 schedule_work(&adapter
->scan_work
);
324 case FSF_STATUS_READ_CFDC_UPDATED
:
325 zfcp_erp_adapter_access_changed(adapter
, 136, req
);
327 case FSF_STATUS_READ_FEATURE_UPDATE_ALERT
:
328 adapter
->adapter_features
= sr_buf
->payload
.word
[0];
332 mempool_free(sr_buf
, adapter
->pool
.data_status_read
);
333 zfcp_fsf_req_free(req
);
335 atomic_inc(&adapter
->stat_miss
);
336 queue_work(zfcp_data
.work_queue
, &adapter
->stat_work
);
339 static void zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req
*req
)
341 switch (req
->qtcb
->header
.fsf_status_qual
.word
[0]) {
342 case FSF_SQ_FCP_RSP_AVAILABLE
:
343 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE
:
344 case FSF_SQ_NO_RETRY_POSSIBLE
:
345 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED
:
347 case FSF_SQ_COMMAND_ABORTED
:
348 req
->status
|= ZFCP_STATUS_FSFREQ_ABORTED
;
350 case FSF_SQ_NO_RECOM
:
351 dev_err(&req
->adapter
->ccw_device
->dev
,
352 "The FCP adapter reported a problem "
353 "that cannot be recovered\n");
354 zfcp_erp_adapter_shutdown(req
->adapter
, 0, 121, req
);
357 /* all non-return stats set FSFREQ_ERROR*/
358 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
361 static void zfcp_fsf_fsfstatus_eval(struct zfcp_fsf_req
*req
)
363 if (unlikely(req
->status
& ZFCP_STATUS_FSFREQ_ERROR
))
366 switch (req
->qtcb
->header
.fsf_status
) {
367 case FSF_UNKNOWN_COMMAND
:
368 dev_err(&req
->adapter
->ccw_device
->dev
,
369 "The FCP adapter does not recognize the command 0x%x\n",
370 req
->qtcb
->header
.fsf_command
);
371 zfcp_erp_adapter_shutdown(req
->adapter
, 0, 120, req
);
372 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
374 case FSF_ADAPTER_STATUS_AVAILABLE
:
375 zfcp_fsf_fsfstatus_qual_eval(req
);
380 static void zfcp_fsf_protstatus_eval(struct zfcp_fsf_req
*req
)
382 struct zfcp_adapter
*adapter
= req
->adapter
;
383 struct fsf_qtcb
*qtcb
= req
->qtcb
;
384 union fsf_prot_status_qual
*psq
= &qtcb
->prefix
.prot_status_qual
;
386 zfcp_hba_dbf_event_fsf_response(req
);
388 if (req
->status
& ZFCP_STATUS_FSFREQ_DISMISSED
) {
389 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
|
390 ZFCP_STATUS_FSFREQ_RETRY
; /* only for SCSI cmnds. */
394 switch (qtcb
->prefix
.prot_status
) {
396 case FSF_PROT_FSF_STATUS_PRESENTED
:
398 case FSF_PROT_QTCB_VERSION_ERROR
:
399 dev_err(&adapter
->ccw_device
->dev
,
400 "QTCB version 0x%x not supported by FCP adapter "
401 "(0x%x to 0x%x)\n", FSF_QTCB_CURRENT_VERSION
,
402 psq
->word
[0], psq
->word
[1]);
403 zfcp_erp_adapter_shutdown(adapter
, 0, 117, req
);
405 case FSF_PROT_ERROR_STATE
:
406 case FSF_PROT_SEQ_NUMB_ERROR
:
407 zfcp_erp_adapter_reopen(adapter
, 0, 98, req
);
408 req
->status
|= ZFCP_STATUS_FSFREQ_RETRY
;
410 case FSF_PROT_UNSUPP_QTCB_TYPE
:
411 dev_err(&adapter
->ccw_device
->dev
,
412 "The QTCB type is not supported by the FCP adapter\n");
413 zfcp_erp_adapter_shutdown(adapter
, 0, 118, req
);
415 case FSF_PROT_HOST_CONNECTION_INITIALIZING
:
416 atomic_set_mask(ZFCP_STATUS_ADAPTER_HOST_CON_INIT
,
419 case FSF_PROT_DUPLICATE_REQUEST_ID
:
420 dev_err(&adapter
->ccw_device
->dev
,
421 "0x%Lx is an ambiguous request identifier\n",
422 (unsigned long long)qtcb
->bottom
.support
.req_handle
);
423 zfcp_erp_adapter_shutdown(adapter
, 0, 78, req
);
425 case FSF_PROT_LINK_DOWN
:
426 zfcp_fsf_link_down_info_eval(req
, 37, &psq
->link_down_info
);
427 /* FIXME: reopening adapter now? better wait for link up */
428 zfcp_erp_adapter_reopen(adapter
, 0, 79, req
);
430 case FSF_PROT_REEST_QUEUE
:
431 /* All ports should be marked as ready to run again */
432 zfcp_erp_modify_adapter_status(adapter
, 28, NULL
,
433 ZFCP_STATUS_COMMON_RUNNING
,
435 zfcp_erp_adapter_reopen(adapter
,
436 ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED
|
437 ZFCP_STATUS_COMMON_ERP_FAILED
, 99, req
);
440 dev_err(&adapter
->ccw_device
->dev
,
441 "0x%x is not a valid transfer protocol status\n",
442 qtcb
->prefix
.prot_status
);
443 zfcp_erp_adapter_shutdown(adapter
, 0, 119, req
);
445 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
449 * zfcp_fsf_req_complete - process completion of a FSF request
450 * @fsf_req: The FSF request that has been completed.
452 * When a request has been completed either from the FCP adapter,
453 * or it has been dismissed due to a queue shutdown, this function
454 * is called to process the completion status and trigger further
455 * events related to the FSF request.
457 void zfcp_fsf_req_complete(struct zfcp_fsf_req
*req
)
459 if (unlikely(req
->fsf_command
== FSF_QTCB_UNSOLICITED_STATUS
)) {
460 zfcp_fsf_status_read_handler(req
);
464 del_timer(&req
->timer
);
465 zfcp_fsf_protstatus_eval(req
);
466 zfcp_fsf_fsfstatus_eval(req
);
470 zfcp_erp_notify(req
->erp_action
, 0);
471 req
->status
|= ZFCP_STATUS_FSFREQ_COMPLETED
;
473 if (likely(req
->status
& ZFCP_STATUS_FSFREQ_CLEANUP
))
474 zfcp_fsf_req_free(req
);
476 /* notify initiator waiting for the requests completion */
478 * FIXME: Race! We must not access fsf_req here as it might have been
479 * cleaned up already due to the set ZFCP_STATUS_FSFREQ_COMPLETED
480 * flag. It's an improbable case. But, we have the same paranoia for
481 * the cleanup flag already.
482 * Might better be handled using complete()?
483 * (setting the flag and doing wakeup ought to be atomic
484 * with regard to checking the flag as long as waitqueue is
485 * part of the to be released structure)
487 wake_up(&req
->completion_wq
);
490 static int zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req
*req
)
492 struct fsf_qtcb_bottom_config
*bottom
;
493 struct zfcp_adapter
*adapter
= req
->adapter
;
494 struct Scsi_Host
*shost
= adapter
->scsi_host
;
496 bottom
= &req
->qtcb
->bottom
.config
;
499 memcpy(req
->data
, bottom
, sizeof(*bottom
));
501 fc_host_node_name(shost
) = bottom
->nport_serv_param
.wwnn
;
502 fc_host_port_name(shost
) = bottom
->nport_serv_param
.wwpn
;
503 fc_host_port_id(shost
) = bottom
->s_id
& ZFCP_DID_MASK
;
504 fc_host_speed(shost
) = bottom
->fc_link_speed
;
505 fc_host_supported_classes(shost
) = FC_COS_CLASS2
| FC_COS_CLASS3
;
507 adapter
->hydra_version
= bottom
->adapter_type
;
508 adapter
->timer_ticks
= bottom
->timer_interval
;
510 if (fc_host_permanent_port_name(shost
) == -1)
511 fc_host_permanent_port_name(shost
) = fc_host_port_name(shost
);
513 switch (bottom
->fc_topology
) {
515 adapter
->peer_d_id
= bottom
->peer_d_id
& ZFCP_DID_MASK
;
516 adapter
->peer_wwpn
= bottom
->plogi_payload
.wwpn
;
517 adapter
->peer_wwnn
= bottom
->plogi_payload
.wwnn
;
518 fc_host_port_type(shost
) = FC_PORTTYPE_PTP
;
520 case FSF_TOPO_FABRIC
:
521 fc_host_port_type(shost
) = FC_PORTTYPE_NPORT
;
524 fc_host_port_type(shost
) = FC_PORTTYPE_NLPORT
;
526 dev_err(&adapter
->ccw_device
->dev
,
527 "Unknown or unsupported arbitrated loop "
528 "fibre channel topology detected\n");
529 zfcp_erp_adapter_shutdown(adapter
, 0, 127, req
);
536 static void zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req
*req
)
538 struct zfcp_adapter
*adapter
= req
->adapter
;
539 struct fsf_qtcb
*qtcb
= req
->qtcb
;
540 struct fsf_qtcb_bottom_config
*bottom
= &qtcb
->bottom
.config
;
541 struct Scsi_Host
*shost
= adapter
->scsi_host
;
543 if (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)
546 adapter
->fsf_lic_version
= bottom
->lic_version
;
547 adapter
->adapter_features
= bottom
->adapter_features
;
548 adapter
->connection_features
= bottom
->connection_features
;
549 adapter
->peer_wwpn
= 0;
550 adapter
->peer_wwnn
= 0;
551 adapter
->peer_d_id
= 0;
553 switch (qtcb
->header
.fsf_status
) {
555 if (zfcp_fsf_exchange_config_evaluate(req
))
558 if (bottom
->max_qtcb_size
< sizeof(struct fsf_qtcb
)) {
559 dev_err(&adapter
->ccw_device
->dev
,
560 "FCP adapter maximum QTCB size (%d bytes) "
562 bottom
->max_qtcb_size
);
563 zfcp_erp_adapter_shutdown(adapter
, 0, 129, req
);
566 atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK
,
569 case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE
:
570 fc_host_node_name(shost
) = 0;
571 fc_host_port_name(shost
) = 0;
572 fc_host_port_id(shost
) = 0;
573 fc_host_speed(shost
) = FC_PORTSPEED_UNKNOWN
;
574 fc_host_port_type(shost
) = FC_PORTTYPE_UNKNOWN
;
575 adapter
->hydra_version
= 0;
577 atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK
,
580 zfcp_fsf_link_down_info_eval(req
, 42,
581 &qtcb
->header
.fsf_status_qual
.link_down_info
);
584 zfcp_erp_adapter_shutdown(adapter
, 0, 130, req
);
588 if (adapter
->adapter_features
& FSF_FEATURE_HBAAPI_MANAGEMENT
) {
589 adapter
->hardware_version
= bottom
->hardware_version
;
590 memcpy(fc_host_serial_number(shost
), bottom
->serial_number
,
591 min(FC_SERIAL_NUMBER_SIZE
, 17));
592 EBCASC(fc_host_serial_number(shost
),
593 min(FC_SERIAL_NUMBER_SIZE
, 17));
596 if (FSF_QTCB_CURRENT_VERSION
< bottom
->low_qtcb_version
) {
597 dev_err(&adapter
->ccw_device
->dev
,
598 "The FCP adapter only supports newer "
599 "control block versions\n");
600 zfcp_erp_adapter_shutdown(adapter
, 0, 125, req
);
603 if (FSF_QTCB_CURRENT_VERSION
> bottom
->high_qtcb_version
) {
604 dev_err(&adapter
->ccw_device
->dev
,
605 "The FCP adapter only supports older "
606 "control block versions\n");
607 zfcp_erp_adapter_shutdown(adapter
, 0, 126, req
);
611 static void zfcp_fsf_exchange_port_evaluate(struct zfcp_fsf_req
*req
)
613 struct zfcp_adapter
*adapter
= req
->adapter
;
614 struct fsf_qtcb_bottom_port
*bottom
= &req
->qtcb
->bottom
.port
;
615 struct Scsi_Host
*shost
= adapter
->scsi_host
;
618 memcpy(req
->data
, bottom
, sizeof(*bottom
));
620 if (adapter
->connection_features
& FSF_FEATURE_NPIV_MODE
)
621 fc_host_permanent_port_name(shost
) = bottom
->wwpn
;
623 fc_host_permanent_port_name(shost
) = fc_host_port_name(shost
);
624 fc_host_maxframe_size(shost
) = bottom
->maximum_frame_size
;
625 fc_host_supported_speeds(shost
) = bottom
->supported_speed
;
628 static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req
*req
)
630 struct fsf_qtcb
*qtcb
= req
->qtcb
;
632 if (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)
635 switch (qtcb
->header
.fsf_status
) {
637 zfcp_fsf_exchange_port_evaluate(req
);
639 case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE
:
640 zfcp_fsf_exchange_port_evaluate(req
);
641 zfcp_fsf_link_down_info_eval(req
, 43,
642 &qtcb
->header
.fsf_status_qual
.link_down_info
);
647 static int zfcp_fsf_sbal_available(struct zfcp_adapter
*adapter
)
649 if (atomic_read(&adapter
->req_q
.count
) > 0)
651 atomic_inc(&adapter
->qdio_outb_full
);
655 static int zfcp_fsf_req_sbal_get(struct zfcp_adapter
*adapter
)
656 __releases(&adapter
->req_q_lock
)
657 __acquires(&adapter
->req_q_lock
)
659 struct zfcp_qdio_queue
*req_q
= &adapter
->req_q
;
662 if (atomic_read(&req_q
->count
) <= -REQUEST_LIST_SIZE
)
664 if (atomic_read(&req_q
->count
) > 0)
667 atomic_dec(&req_q
->count
);
668 spin_unlock_bh(&adapter
->req_q_lock
);
669 ret
= wait_event_interruptible_timeout(adapter
->request_wq
,
670 atomic_read(&req_q
->count
) >= 0,
672 spin_lock_bh(&adapter
->req_q_lock
);
673 atomic_inc(&req_q
->count
);
678 atomic_inc(&adapter
->qdio_outb_full
);
682 static struct zfcp_fsf_req
*zfcp_fsf_alloc_noqtcb(mempool_t
*pool
)
684 struct zfcp_fsf_req
*req
;
685 req
= mempool_alloc(pool
, GFP_ATOMIC
);
688 memset(req
, 0, sizeof(*req
));
693 static struct zfcp_fsf_req
*zfcp_fsf_alloc_qtcb(mempool_t
*pool
)
695 struct zfcp_fsf_req_qtcb
*qtcb
;
698 qtcb
= mempool_alloc(pool
, GFP_ATOMIC
);
700 qtcb
= kmem_cache_alloc(zfcp_data
.fsf_req_qtcb_cache
,
705 memset(qtcb
, 0, sizeof(*qtcb
));
706 qtcb
->fsf_req
.qtcb
= &qtcb
->qtcb
;
707 qtcb
->fsf_req
.pool
= pool
;
709 return &qtcb
->fsf_req
;
712 static struct zfcp_fsf_req
*zfcp_fsf_req_create(struct zfcp_adapter
*adapter
,
713 u32 fsf_cmd
, int req_flags
,
716 struct qdio_buffer_element
*sbale
;
718 struct zfcp_fsf_req
*req
;
719 struct zfcp_qdio_queue
*req_q
= &adapter
->req_q
;
721 if (req_flags
& ZFCP_REQ_NO_QTCB
)
722 req
= zfcp_fsf_alloc_noqtcb(pool
);
724 req
= zfcp_fsf_alloc_qtcb(pool
);
727 return ERR_PTR(-EIO
);
729 if (adapter
->req_no
== 0)
732 INIT_LIST_HEAD(&req
->list
);
733 init_timer(&req
->timer
);
734 init_waitqueue_head(&req
->completion_wq
);
736 req
->adapter
= adapter
;
737 req
->fsf_command
= fsf_cmd
;
738 req
->req_id
= adapter
->req_no
++;
739 req
->sbal_number
= 1;
740 req
->sbal_first
= req_q
->first
;
741 req
->sbal_last
= req_q
->first
;
744 sbale
= zfcp_qdio_sbale_req(req
);
745 sbale
[0].addr
= (void *) req
->req_id
;
746 sbale
[0].flags
|= SBAL_FLAGS0_COMMAND
;
748 if (likely(req
->qtcb
)) {
749 req
->qtcb
->prefix
.req_seq_no
= req
->adapter
->fsf_req_seq_no
;
750 req
->qtcb
->prefix
.req_id
= req
->req_id
;
751 req
->qtcb
->prefix
.ulp_info
= 26;
752 req
->qtcb
->prefix
.qtcb_type
= fsf_qtcb_type
[req
->fsf_command
];
753 req
->qtcb
->prefix
.qtcb_version
= FSF_QTCB_CURRENT_VERSION
;
754 req
->qtcb
->header
.req_handle
= req
->req_id
;
755 req
->qtcb
->header
.fsf_command
= req
->fsf_command
;
756 req
->seq_no
= adapter
->fsf_req_seq_no
;
757 req
->qtcb
->prefix
.req_seq_no
= adapter
->fsf_req_seq_no
;
758 sbale
[1].addr
= (void *) req
->qtcb
;
759 sbale
[1].length
= sizeof(struct fsf_qtcb
);
762 if (!(atomic_read(&adapter
->status
) & ZFCP_STATUS_ADAPTER_QDIOUP
)) {
763 zfcp_fsf_req_free(req
);
764 return ERR_PTR(-EIO
);
767 if (likely(req_flags
& ZFCP_REQ_AUTO_CLEANUP
))
768 req
->status
|= ZFCP_STATUS_FSFREQ_CLEANUP
;
773 static int zfcp_fsf_req_send(struct zfcp_fsf_req
*req
)
775 struct zfcp_adapter
*adapter
= req
->adapter
;
779 /* put allocated FSF request into hash table */
780 spin_lock_irqsave(&adapter
->req_list_lock
, flags
);
781 idx
= zfcp_reqlist_hash(req
->req_id
);
782 list_add_tail(&req
->list
, &adapter
->req_list
[idx
]);
783 spin_unlock_irqrestore(&adapter
->req_list_lock
, flags
);
785 req
->qdio_outb_usage
= atomic_read(&adapter
->req_q
.count
);
786 req
->issued
= get_clock();
787 if (zfcp_qdio_send(req
)) {
788 del_timer(&req
->timer
);
789 spin_lock_irqsave(&adapter
->req_list_lock
, flags
);
790 /* lookup request again, list might have changed */
791 if (zfcp_reqlist_find_safe(adapter
, req
))
792 zfcp_reqlist_remove(adapter
, req
);
793 spin_unlock_irqrestore(&adapter
->req_list_lock
, flags
);
794 zfcp_erp_adapter_reopen(adapter
, 0, 116, req
);
798 /* Don't increase for unsolicited status */
800 adapter
->fsf_req_seq_no
++;
806 * zfcp_fsf_status_read - send status read request
807 * @adapter: pointer to struct zfcp_adapter
808 * @req_flags: request flags
809 * Returns: 0 on success, ERROR otherwise
811 int zfcp_fsf_status_read(struct zfcp_adapter
*adapter
)
813 struct zfcp_fsf_req
*req
;
814 struct fsf_status_read_buffer
*sr_buf
;
815 struct qdio_buffer_element
*sbale
;
818 spin_lock_bh(&adapter
->req_q_lock
);
819 if (zfcp_fsf_req_sbal_get(adapter
))
822 req
= zfcp_fsf_req_create(adapter
, FSF_QTCB_UNSOLICITED_STATUS
,
824 adapter
->pool
.fsf_req_status_read
);
826 retval
= PTR_ERR(req
);
830 sbale
= zfcp_qdio_sbale_req(req
);
831 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_STATUS
;
832 sbale
[2].flags
|= SBAL_FLAGS_LAST_ENTRY
;
835 sr_buf
= mempool_alloc(adapter
->pool
.data_status_read
, GFP_ATOMIC
);
840 memset(sr_buf
, 0, sizeof(*sr_buf
));
842 sbale
= zfcp_qdio_sbale_curr(req
);
843 sbale
->addr
= (void *) sr_buf
;
844 sbale
->length
= sizeof(*sr_buf
);
846 retval
= zfcp_fsf_req_send(req
);
848 goto failed_req_send
;
853 mempool_free(sr_buf
, adapter
->pool
.data_status_read
);
855 zfcp_fsf_req_free(req
);
856 zfcp_hba_dbf_event_fsf_unsol("fail", adapter
, NULL
);
858 spin_unlock_bh(&adapter
->req_q_lock
);
862 static void zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req
*req
)
864 struct zfcp_unit
*unit
= req
->data
;
865 union fsf_status_qual
*fsq
= &req
->qtcb
->header
.fsf_status_qual
;
867 if (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)
870 switch (req
->qtcb
->header
.fsf_status
) {
871 case FSF_PORT_HANDLE_NOT_VALID
:
872 if (fsq
->word
[0] == fsq
->word
[1]) {
873 zfcp_erp_adapter_reopen(unit
->port
->adapter
, 0, 104,
875 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
878 case FSF_LUN_HANDLE_NOT_VALID
:
879 if (fsq
->word
[0] == fsq
->word
[1]) {
880 zfcp_erp_port_reopen(unit
->port
, 0, 105, req
);
881 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
884 case FSF_FCP_COMMAND_DOES_NOT_EXIST
:
885 req
->status
|= ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED
;
888 zfcp_erp_port_boxed(unit
->port
, 47, req
);
889 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
|
890 ZFCP_STATUS_FSFREQ_RETRY
;
893 zfcp_erp_unit_boxed(unit
, 48, req
);
894 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
|
895 ZFCP_STATUS_FSFREQ_RETRY
;
897 case FSF_ADAPTER_STATUS_AVAILABLE
:
898 switch (fsq
->word
[0]) {
899 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE
:
900 zfcp_test_link(unit
->port
);
901 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED
:
902 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
907 req
->status
|= ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED
;
913 * zfcp_fsf_abort_fcp_command - abort running SCSI command
914 * @old_req_id: unsigned long
915 * @adapter: pointer to struct zfcp_adapter
916 * @unit: pointer to struct zfcp_unit
917 * @req_flags: integer specifying the request flags
918 * Returns: pointer to struct zfcp_fsf_req
920 * FIXME(design): should be watched by a timeout !!!
923 struct zfcp_fsf_req
*zfcp_fsf_abort_fcp_command(unsigned long old_req_id
,
924 struct zfcp_adapter
*adapter
,
925 struct zfcp_unit
*unit
,
928 struct qdio_buffer_element
*sbale
;
929 struct zfcp_fsf_req
*req
= NULL
;
931 spin_lock(&adapter
->req_q_lock
);
932 if (!zfcp_fsf_sbal_available(adapter
))
934 req
= zfcp_fsf_req_create(adapter
, FSF_QTCB_ABORT_FCP_CMND
,
935 req_flags
, adapter
->pool
.fsf_req_abort
);
941 if (unlikely(!(atomic_read(&unit
->status
) &
942 ZFCP_STATUS_COMMON_UNBLOCKED
)))
945 sbale
= zfcp_qdio_sbale_req(req
);
946 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_READ
;
947 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
950 req
->handler
= zfcp_fsf_abort_fcp_command_handler
;
951 req
->qtcb
->header
.lun_handle
= unit
->handle
;
952 req
->qtcb
->header
.port_handle
= unit
->port
->handle
;
953 req
->qtcb
->bottom
.support
.req_handle
= (u64
) old_req_id
;
955 zfcp_fsf_start_timer(req
, ZFCP_SCSI_ER_TIMEOUT
);
956 if (!zfcp_fsf_req_send(req
))
960 zfcp_fsf_req_free(req
);
963 spin_unlock(&adapter
->req_q_lock
);
967 static void zfcp_fsf_send_ct_handler(struct zfcp_fsf_req
*req
)
969 struct zfcp_adapter
*adapter
= req
->adapter
;
970 struct zfcp_send_ct
*send_ct
= req
->data
;
971 struct fsf_qtcb_header
*header
= &req
->qtcb
->header
;
973 send_ct
->status
= -EINVAL
;
975 if (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)
978 switch (header
->fsf_status
) {
980 zfcp_san_dbf_event_ct_response(req
);
983 case FSF_SERVICE_CLASS_NOT_SUPPORTED
:
984 zfcp_fsf_class_not_supp(req
);
986 case FSF_ADAPTER_STATUS_AVAILABLE
:
987 switch (header
->fsf_status_qual
.word
[0]){
988 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE
:
989 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED
:
990 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
994 case FSF_ACCESS_DENIED
:
997 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
|
998 ZFCP_STATUS_FSFREQ_RETRY
;
1000 case FSF_PORT_HANDLE_NOT_VALID
:
1001 zfcp_erp_adapter_reopen(adapter
, 0, 106, req
);
1002 case FSF_GENERIC_COMMAND_REJECTED
:
1003 case FSF_PAYLOAD_SIZE_MISMATCH
:
1004 case FSF_REQUEST_SIZE_TOO_LARGE
:
1005 case FSF_RESPONSE_SIZE_TOO_LARGE
:
1006 case FSF_SBAL_MISMATCH
:
1007 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1012 if (send_ct
->handler
)
1013 send_ct
->handler(send_ct
->handler_data
);
1016 static int zfcp_fsf_setup_ct_els_sbals(struct zfcp_fsf_req
*req
,
1017 struct scatterlist
*sg_req
,
1018 struct scatterlist
*sg_resp
,
1021 struct qdio_buffer_element
*sbale
= zfcp_qdio_sbale_req(req
);
1022 u32 feat
= req
->adapter
->adapter_features
;
1025 if (!(feat
& FSF_FEATURE_ELS_CT_CHAINED_SBALS
)) {
1026 if (sg_req
->length
> PAGE_SIZE
|| sg_resp
->length
> PAGE_SIZE
||
1027 !sg_is_last(sg_req
) || !sg_is_last(sg_resp
))
1030 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_WRITE_READ
;
1031 sbale
[2].addr
= sg_virt(sg_req
);
1032 sbale
[2].length
= sg_req
->length
;
1033 sbale
[3].addr
= sg_virt(sg_resp
);
1034 sbale
[3].length
= sg_resp
->length
;
1035 sbale
[3].flags
|= SBAL_FLAGS_LAST_ENTRY
;
1039 bytes
= zfcp_qdio_sbals_from_sg(req
, SBAL_FLAGS0_TYPE_WRITE_READ
,
1043 req
->qtcb
->bottom
.support
.req_buf_length
= bytes
;
1044 req
->sbale_curr
= ZFCP_LAST_SBALE_PER_SBAL
;
1046 bytes
= zfcp_qdio_sbals_from_sg(req
, SBAL_FLAGS0_TYPE_WRITE_READ
,
1047 sg_resp
, max_sbals
);
1050 req
->qtcb
->bottom
.support
.resp_buf_length
= bytes
;
1056 * zfcp_fsf_send_ct - initiate a Generic Service request (FC-GS)
1057 * @ct: pointer to struct zfcp_send_ct with data for request
1058 * @pool: if non-null this mempool is used to allocate struct zfcp_fsf_req
1059 * @erp_action: if non-null the Generic Service request sent within ERP
1061 int zfcp_fsf_send_ct(struct zfcp_send_ct
*ct
, mempool_t
*pool
,
1062 struct zfcp_erp_action
*erp_action
)
1064 struct zfcp_wka_port
*wka_port
= ct
->wka_port
;
1065 struct zfcp_adapter
*adapter
= wka_port
->adapter
;
1066 struct zfcp_fsf_req
*req
;
1069 spin_lock_bh(&adapter
->req_q_lock
);
1070 if (zfcp_fsf_req_sbal_get(adapter
))
1073 req
= zfcp_fsf_req_create(adapter
, FSF_QTCB_SEND_GENERIC
,
1074 ZFCP_REQ_AUTO_CLEANUP
, pool
);
1080 ret
= zfcp_fsf_setup_ct_els_sbals(req
, ct
->req
, ct
->resp
,
1081 FSF_MAX_SBALS_PER_REQ
);
1085 req
->handler
= zfcp_fsf_send_ct_handler
;
1086 req
->qtcb
->header
.port_handle
= wka_port
->handle
;
1087 req
->qtcb
->bottom
.support
.service_class
= FSF_CLASS_3
;
1088 req
->qtcb
->bottom
.support
.timeout
= ct
->timeout
;
1091 zfcp_san_dbf_event_ct_request(req
);
1094 erp_action
->fsf_req
= req
;
1095 req
->erp_action
= erp_action
;
1096 zfcp_fsf_start_erp_timer(req
);
1098 zfcp_fsf_start_timer(req
, ZFCP_FSF_REQUEST_TIMEOUT
);
1100 ret
= zfcp_fsf_req_send(req
);
1107 zfcp_fsf_req_free(req
);
1109 erp_action
->fsf_req
= NULL
;
1111 spin_unlock_bh(&adapter
->req_q_lock
);
1115 static void zfcp_fsf_send_els_handler(struct zfcp_fsf_req
*req
)
1117 struct zfcp_send_els
*send_els
= req
->data
;
1118 struct zfcp_port
*port
= send_els
->port
;
1119 struct fsf_qtcb_header
*header
= &req
->qtcb
->header
;
1121 send_els
->status
= -EINVAL
;
1123 if (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)
1124 goto skip_fsfstatus
;
1126 switch (header
->fsf_status
) {
1128 zfcp_san_dbf_event_els_response(req
);
1129 send_els
->status
= 0;
1131 case FSF_SERVICE_CLASS_NOT_SUPPORTED
:
1132 zfcp_fsf_class_not_supp(req
);
1134 case FSF_ADAPTER_STATUS_AVAILABLE
:
1135 switch (header
->fsf_status_qual
.word
[0]){
1136 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE
:
1137 if (port
&& (send_els
->ls_code
!= ZFCP_LS_ADISC
))
1138 zfcp_test_link(port
);
1140 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED
:
1141 case FSF_SQ_RETRY_IF_POSSIBLE
:
1142 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1146 case FSF_ELS_COMMAND_REJECTED
:
1147 case FSF_PAYLOAD_SIZE_MISMATCH
:
1148 case FSF_REQUEST_SIZE_TOO_LARGE
:
1149 case FSF_RESPONSE_SIZE_TOO_LARGE
:
1151 case FSF_ACCESS_DENIED
:
1152 zfcp_fsf_access_denied_port(req
, port
);
1154 case FSF_SBAL_MISMATCH
:
1155 /* should never occure, avoided in zfcp_fsf_send_els */
1158 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1162 if (send_els
->handler
)
1163 send_els
->handler(send_els
->handler_data
);
1167 * zfcp_fsf_send_els - initiate an ELS command (FC-FS)
1168 * @els: pointer to struct zfcp_send_els with data for the command
1170 int zfcp_fsf_send_els(struct zfcp_send_els
*els
)
1172 struct zfcp_fsf_req
*req
;
1173 struct zfcp_adapter
*adapter
= els
->adapter
;
1174 struct fsf_qtcb_bottom_support
*bottom
;
1177 if (unlikely(!(atomic_read(&els
->port
->status
) &
1178 ZFCP_STATUS_COMMON_UNBLOCKED
)))
1181 spin_lock(&adapter
->req_q_lock
);
1182 if (!zfcp_fsf_sbal_available(adapter
))
1184 req
= zfcp_fsf_req_create(adapter
, FSF_QTCB_SEND_ELS
,
1185 ZFCP_REQ_AUTO_CLEANUP
, NULL
);
1191 ret
= zfcp_fsf_setup_ct_els_sbals(req
, els
->req
, els
->resp
, 2);
1196 bottom
= &req
->qtcb
->bottom
.support
;
1197 req
->handler
= zfcp_fsf_send_els_handler
;
1198 bottom
->d_id
= els
->d_id
;
1199 bottom
->service_class
= FSF_CLASS_3
;
1200 bottom
->timeout
= 2 * R_A_TOV
;
1203 zfcp_san_dbf_event_els_request(req
);
1205 zfcp_fsf_start_timer(req
, ZFCP_FSF_REQUEST_TIMEOUT
);
1206 ret
= zfcp_fsf_req_send(req
);
1213 zfcp_fsf_req_free(req
);
1215 spin_unlock(&adapter
->req_q_lock
);
1219 int zfcp_fsf_exchange_config_data(struct zfcp_erp_action
*erp_action
)
1221 struct qdio_buffer_element
*sbale
;
1222 struct zfcp_fsf_req
*req
;
1223 struct zfcp_adapter
*adapter
= erp_action
->adapter
;
1226 spin_lock_bh(&adapter
->req_q_lock
);
1227 if (!zfcp_fsf_sbal_available(adapter
))
1229 req
= zfcp_fsf_req_create(adapter
,
1230 FSF_QTCB_EXCHANGE_CONFIG_DATA
,
1231 ZFCP_REQ_AUTO_CLEANUP
,
1232 adapter
->pool
.fsf_req_erp
);
1234 retval
= PTR_ERR(req
);
1238 sbale
= zfcp_qdio_sbale_req(req
);
1239 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_READ
;
1240 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
1242 req
->qtcb
->bottom
.config
.feature_selection
=
1244 FSF_FEATURE_LUN_SHARING
|
1245 FSF_FEATURE_NOTIFICATION_LOST
|
1246 FSF_FEATURE_UPDATE_ALERT
;
1247 req
->erp_action
= erp_action
;
1248 req
->handler
= zfcp_fsf_exchange_config_data_handler
;
1249 erp_action
->fsf_req
= req
;
1251 zfcp_fsf_start_erp_timer(req
);
1252 retval
= zfcp_fsf_req_send(req
);
1254 zfcp_fsf_req_free(req
);
1255 erp_action
->fsf_req
= NULL
;
1258 spin_unlock_bh(&adapter
->req_q_lock
);
1262 int zfcp_fsf_exchange_config_data_sync(struct zfcp_adapter
*adapter
,
1263 struct fsf_qtcb_bottom_config
*data
)
1265 struct qdio_buffer_element
*sbale
;
1266 struct zfcp_fsf_req
*req
= NULL
;
1269 spin_lock_bh(&adapter
->req_q_lock
);
1270 if (zfcp_fsf_req_sbal_get(adapter
))
1273 req
= zfcp_fsf_req_create(adapter
, FSF_QTCB_EXCHANGE_CONFIG_DATA
,
1276 retval
= PTR_ERR(req
);
1280 sbale
= zfcp_qdio_sbale_req(req
);
1281 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_READ
;
1282 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
1283 req
->handler
= zfcp_fsf_exchange_config_data_handler
;
1285 req
->qtcb
->bottom
.config
.feature_selection
=
1287 FSF_FEATURE_LUN_SHARING
|
1288 FSF_FEATURE_NOTIFICATION_LOST
|
1289 FSF_FEATURE_UPDATE_ALERT
;
1294 zfcp_fsf_start_timer(req
, ZFCP_FSF_REQUEST_TIMEOUT
);
1295 retval
= zfcp_fsf_req_send(req
);
1297 spin_unlock_bh(&adapter
->req_q_lock
);
1299 wait_event(req
->completion_wq
,
1300 req
->status
& ZFCP_STATUS_FSFREQ_COMPLETED
);
1302 zfcp_fsf_req_free(req
);
1308 * zfcp_fsf_exchange_port_data - request information about local port
1309 * @erp_action: ERP action for the adapter for which port data is requested
1310 * Returns: 0 on success, error otherwise
1312 int zfcp_fsf_exchange_port_data(struct zfcp_erp_action
*erp_action
)
1314 struct qdio_buffer_element
*sbale
;
1315 struct zfcp_fsf_req
*req
;
1316 struct zfcp_adapter
*adapter
= erp_action
->adapter
;
1319 if (!(adapter
->adapter_features
& FSF_FEATURE_HBAAPI_MANAGEMENT
))
1322 spin_lock_bh(&adapter
->req_q_lock
);
1323 if (!zfcp_fsf_sbal_available(adapter
))
1325 req
= zfcp_fsf_req_create(adapter
, FSF_QTCB_EXCHANGE_PORT_DATA
,
1326 ZFCP_REQ_AUTO_CLEANUP
,
1327 adapter
->pool
.fsf_req_erp
);
1329 retval
= PTR_ERR(req
);
1333 sbale
= zfcp_qdio_sbale_req(req
);
1334 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_READ
;
1335 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
1337 req
->handler
= zfcp_fsf_exchange_port_data_handler
;
1338 req
->erp_action
= erp_action
;
1339 erp_action
->fsf_req
= req
;
1341 zfcp_fsf_start_erp_timer(req
);
1342 retval
= zfcp_fsf_req_send(req
);
1344 zfcp_fsf_req_free(req
);
1345 erp_action
->fsf_req
= NULL
;
1348 spin_unlock_bh(&adapter
->req_q_lock
);
1353 * zfcp_fsf_exchange_port_data_sync - request information about local port
1354 * @adapter: pointer to struct zfcp_adapter
1355 * @data: pointer to struct fsf_qtcb_bottom_port
1356 * Returns: 0 on success, error otherwise
1358 int zfcp_fsf_exchange_port_data_sync(struct zfcp_adapter
*adapter
,
1359 struct fsf_qtcb_bottom_port
*data
)
1361 struct qdio_buffer_element
*sbale
;
1362 struct zfcp_fsf_req
*req
= NULL
;
1365 if (!(adapter
->adapter_features
& FSF_FEATURE_HBAAPI_MANAGEMENT
))
1368 spin_lock_bh(&adapter
->req_q_lock
);
1369 if (!zfcp_fsf_sbal_available(adapter
))
1372 req
= zfcp_fsf_req_create(adapter
, FSF_QTCB_EXCHANGE_PORT_DATA
, 0,
1375 retval
= PTR_ERR(req
);
1382 sbale
= zfcp_qdio_sbale_req(req
);
1383 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_READ
;
1384 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
1386 req
->handler
= zfcp_fsf_exchange_port_data_handler
;
1387 zfcp_fsf_start_timer(req
, ZFCP_FSF_REQUEST_TIMEOUT
);
1388 retval
= zfcp_fsf_req_send(req
);
1390 spin_unlock_bh(&adapter
->req_q_lock
);
1392 wait_event(req
->completion_wq
,
1393 req
->status
& ZFCP_STATUS_FSFREQ_COMPLETED
);
1394 zfcp_fsf_req_free(req
);
1399 static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req
*req
)
1401 struct zfcp_port
*port
= req
->data
;
1402 struct fsf_qtcb_header
*header
= &req
->qtcb
->header
;
1403 struct fsf_plogi
*plogi
;
1405 if (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)
1408 switch (header
->fsf_status
) {
1409 case FSF_PORT_ALREADY_OPEN
:
1411 case FSF_ACCESS_DENIED
:
1412 zfcp_fsf_access_denied_port(req
, port
);
1414 case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED
:
1415 dev_warn(&req
->adapter
->ccw_device
->dev
,
1416 "Not enough FCP adapter resources to open "
1417 "remote port 0x%016Lx\n",
1418 (unsigned long long)port
->wwpn
);
1419 zfcp_erp_port_failed(port
, 31, req
);
1420 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1422 case FSF_ADAPTER_STATUS_AVAILABLE
:
1423 switch (header
->fsf_status_qual
.word
[0]) {
1424 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE
:
1425 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED
:
1426 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1428 case FSF_SQ_NO_RETRY_POSSIBLE
:
1429 dev_warn(&req
->adapter
->ccw_device
->dev
,
1430 "Remote port 0x%016Lx could not be opened\n",
1431 (unsigned long long)port
->wwpn
);
1432 zfcp_erp_port_failed(port
, 32, req
);
1433 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1438 port
->handle
= header
->port_handle
;
1439 atomic_set_mask(ZFCP_STATUS_COMMON_OPEN
|
1440 ZFCP_STATUS_PORT_PHYS_OPEN
, &port
->status
);
1441 atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED
|
1442 ZFCP_STATUS_COMMON_ACCESS_BOXED
,
1444 /* check whether D_ID has changed during open */
1446 * FIXME: This check is not airtight, as the FCP channel does
1447 * not monitor closures of target port connections caused on
1448 * the remote side. Thus, they might miss out on invalidating
1449 * locally cached WWPNs (and other N_Port parameters) of gone
1450 * target ports. So, our heroic attempt to make things safe
1451 * could be undermined by 'open port' response data tagged with
1452 * obsolete WWPNs. Another reason to monitor potential
1453 * connection closures ourself at least (by interpreting
1454 * incoming ELS' and unsolicited status). It just crosses my
1455 * mind that one should be able to cross-check by means of
1456 * another GID_PN straight after a port has been opened.
1457 * Alternately, an ADISC/PDISC ELS should suffice, as well.
1459 plogi
= (struct fsf_plogi
*) req
->qtcb
->bottom
.support
.els
;
1460 if (req
->qtcb
->bottom
.support
.els1_length
>=
1461 FSF_PLOGI_MIN_LEN
) {
1462 if (plogi
->serv_param
.wwpn
!= port
->wwpn
)
1465 port
->wwnn
= plogi
->serv_param
.wwnn
;
1466 zfcp_fc_plogi_evaluate(port
, plogi
);
1470 case FSF_UNKNOWN_OP_SUBTYPE
:
1471 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1477 * zfcp_fsf_open_port - create and send open port request
1478 * @erp_action: pointer to struct zfcp_erp_action
1479 * Returns: 0 on success, error otherwise
1481 int zfcp_fsf_open_port(struct zfcp_erp_action
*erp_action
)
1483 struct qdio_buffer_element
*sbale
;
1484 struct zfcp_adapter
*adapter
= erp_action
->adapter
;
1485 struct zfcp_fsf_req
*req
;
1488 spin_lock_bh(&adapter
->req_q_lock
);
1489 if (zfcp_fsf_req_sbal_get(adapter
))
1492 req
= zfcp_fsf_req_create(adapter
,
1493 FSF_QTCB_OPEN_PORT_WITH_DID
,
1494 ZFCP_REQ_AUTO_CLEANUP
,
1495 adapter
->pool
.fsf_req_erp
);
1497 retval
= PTR_ERR(req
);
1501 sbale
= zfcp_qdio_sbale_req(req
);
1502 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_READ
;
1503 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
1505 req
->handler
= zfcp_fsf_open_port_handler
;
1506 req
->qtcb
->bottom
.support
.d_id
= erp_action
->port
->d_id
;
1507 req
->data
= erp_action
->port
;
1508 req
->erp_action
= erp_action
;
1509 erp_action
->fsf_req
= req
;
1511 zfcp_fsf_start_erp_timer(req
);
1512 retval
= zfcp_fsf_req_send(req
);
1514 zfcp_fsf_req_free(req
);
1515 erp_action
->fsf_req
= NULL
;
1518 spin_unlock_bh(&adapter
->req_q_lock
);
1522 static void zfcp_fsf_close_port_handler(struct zfcp_fsf_req
*req
)
1524 struct zfcp_port
*port
= req
->data
;
1526 if (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)
1529 switch (req
->qtcb
->header
.fsf_status
) {
1530 case FSF_PORT_HANDLE_NOT_VALID
:
1531 zfcp_erp_adapter_reopen(port
->adapter
, 0, 107, req
);
1532 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1534 case FSF_ADAPTER_STATUS_AVAILABLE
:
1537 zfcp_erp_modify_port_status(port
, 33, req
,
1538 ZFCP_STATUS_COMMON_OPEN
,
1545 * zfcp_fsf_close_port - create and send close port request
1546 * @erp_action: pointer to struct zfcp_erp_action
1547 * Returns: 0 on success, error otherwise
1549 int zfcp_fsf_close_port(struct zfcp_erp_action
*erp_action
)
1551 struct qdio_buffer_element
*sbale
;
1552 struct zfcp_adapter
*adapter
= erp_action
->adapter
;
1553 struct zfcp_fsf_req
*req
;
1556 spin_lock_bh(&adapter
->req_q_lock
);
1557 if (zfcp_fsf_req_sbal_get(adapter
))
1560 req
= zfcp_fsf_req_create(adapter
, FSF_QTCB_CLOSE_PORT
,
1561 ZFCP_REQ_AUTO_CLEANUP
,
1562 adapter
->pool
.fsf_req_erp
);
1564 retval
= PTR_ERR(req
);
1568 sbale
= zfcp_qdio_sbale_req(req
);
1569 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_READ
;
1570 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
1572 req
->handler
= zfcp_fsf_close_port_handler
;
1573 req
->data
= erp_action
->port
;
1574 req
->erp_action
= erp_action
;
1575 req
->qtcb
->header
.port_handle
= erp_action
->port
->handle
;
1576 erp_action
->fsf_req
= req
;
1578 zfcp_fsf_start_erp_timer(req
);
1579 retval
= zfcp_fsf_req_send(req
);
1581 zfcp_fsf_req_free(req
);
1582 erp_action
->fsf_req
= NULL
;
1585 spin_unlock_bh(&adapter
->req_q_lock
);
1589 static void zfcp_fsf_open_wka_port_handler(struct zfcp_fsf_req
*req
)
1591 struct zfcp_wka_port
*wka_port
= req
->data
;
1592 struct fsf_qtcb_header
*header
= &req
->qtcb
->header
;
1594 if (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
) {
1595 wka_port
->status
= ZFCP_WKA_PORT_OFFLINE
;
1599 switch (header
->fsf_status
) {
1600 case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED
:
1601 dev_warn(&req
->adapter
->ccw_device
->dev
,
1602 "Opening WKA port 0x%x failed\n", wka_port
->d_id
);
1603 case FSF_ADAPTER_STATUS_AVAILABLE
:
1604 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1605 case FSF_ACCESS_DENIED
:
1606 wka_port
->status
= ZFCP_WKA_PORT_OFFLINE
;
1608 case FSF_PORT_ALREADY_OPEN
:
1611 wka_port
->handle
= header
->port_handle
;
1612 wka_port
->status
= ZFCP_WKA_PORT_ONLINE
;
1615 wake_up(&wka_port
->completion_wq
);
1619 * zfcp_fsf_open_wka_port - create and send open wka-port request
1620 * @wka_port: pointer to struct zfcp_wka_port
1621 * Returns: 0 on success, error otherwise
1623 int zfcp_fsf_open_wka_port(struct zfcp_wka_port
*wka_port
)
1625 struct qdio_buffer_element
*sbale
;
1626 struct zfcp_adapter
*adapter
= wka_port
->adapter
;
1627 struct zfcp_fsf_req
*req
;
1630 spin_lock_bh(&adapter
->req_q_lock
);
1631 if (zfcp_fsf_req_sbal_get(adapter
))
1634 req
= zfcp_fsf_req_create(adapter
,
1635 FSF_QTCB_OPEN_PORT_WITH_DID
,
1636 ZFCP_REQ_AUTO_CLEANUP
,
1637 adapter
->pool
.fsf_req_erp
);
1638 if (unlikely(IS_ERR(req
))) {
1639 retval
= PTR_ERR(req
);
1643 sbale
= zfcp_qdio_sbale_req(req
);
1644 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_READ
;
1645 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
1647 req
->handler
= zfcp_fsf_open_wka_port_handler
;
1648 req
->qtcb
->bottom
.support
.d_id
= wka_port
->d_id
;
1649 req
->data
= wka_port
;
1651 zfcp_fsf_start_timer(req
, ZFCP_FSF_REQUEST_TIMEOUT
);
1652 retval
= zfcp_fsf_req_send(req
);
1654 zfcp_fsf_req_free(req
);
1656 spin_unlock_bh(&adapter
->req_q_lock
);
1660 static void zfcp_fsf_close_wka_port_handler(struct zfcp_fsf_req
*req
)
1662 struct zfcp_wka_port
*wka_port
= req
->data
;
1664 if (req
->qtcb
->header
.fsf_status
== FSF_PORT_HANDLE_NOT_VALID
) {
1665 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1666 zfcp_erp_adapter_reopen(wka_port
->adapter
, 0, 84, req
);
1669 wka_port
->status
= ZFCP_WKA_PORT_OFFLINE
;
1670 wake_up(&wka_port
->completion_wq
);
1674 * zfcp_fsf_close_wka_port - create and send close wka port request
1675 * @erp_action: pointer to struct zfcp_erp_action
1676 * Returns: 0 on success, error otherwise
1678 int zfcp_fsf_close_wka_port(struct zfcp_wka_port
*wka_port
)
1680 struct qdio_buffer_element
*sbale
;
1681 struct zfcp_adapter
*adapter
= wka_port
->adapter
;
1682 struct zfcp_fsf_req
*req
;
1685 spin_lock_bh(&adapter
->req_q_lock
);
1686 if (zfcp_fsf_req_sbal_get(adapter
))
1689 req
= zfcp_fsf_req_create(adapter
, FSF_QTCB_CLOSE_PORT
,
1690 ZFCP_REQ_AUTO_CLEANUP
,
1691 adapter
->pool
.fsf_req_erp
);
1692 if (unlikely(IS_ERR(req
))) {
1693 retval
= PTR_ERR(req
);
1697 sbale
= zfcp_qdio_sbale_req(req
);
1698 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_READ
;
1699 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
1701 req
->handler
= zfcp_fsf_close_wka_port_handler
;
1702 req
->data
= wka_port
;
1703 req
->qtcb
->header
.port_handle
= wka_port
->handle
;
1705 zfcp_fsf_start_timer(req
, ZFCP_FSF_REQUEST_TIMEOUT
);
1706 retval
= zfcp_fsf_req_send(req
);
1708 zfcp_fsf_req_free(req
);
1710 spin_unlock_bh(&adapter
->req_q_lock
);
1714 static void zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req
*req
)
1716 struct zfcp_port
*port
= req
->data
;
1717 struct fsf_qtcb_header
*header
= &req
->qtcb
->header
;
1718 struct zfcp_unit
*unit
;
1720 if (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)
1721 goto skip_fsfstatus
;
1723 switch (header
->fsf_status
) {
1724 case FSF_PORT_HANDLE_NOT_VALID
:
1725 zfcp_erp_adapter_reopen(port
->adapter
, 0, 108, req
);
1726 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1728 case FSF_ACCESS_DENIED
:
1729 zfcp_fsf_access_denied_port(req
, port
);
1731 case FSF_PORT_BOXED
:
1732 zfcp_erp_port_boxed(port
, 50, req
);
1733 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
|
1734 ZFCP_STATUS_FSFREQ_RETRY
;
1735 /* can't use generic zfcp_erp_modify_port_status because
1736 * ZFCP_STATUS_COMMON_OPEN must not be reset for the port */
1737 atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN
, &port
->status
);
1738 list_for_each_entry(unit
, &port
->unit_list_head
, list
)
1739 atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN
,
1742 case FSF_ADAPTER_STATUS_AVAILABLE
:
1743 switch (header
->fsf_status_qual
.word
[0]) {
1744 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE
:
1746 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED
:
1747 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1752 /* can't use generic zfcp_erp_modify_port_status because
1753 * ZFCP_STATUS_COMMON_OPEN must not be reset for the port
1755 atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN
, &port
->status
);
1756 list_for_each_entry(unit
, &port
->unit_list_head
, list
)
1757 atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN
,
1762 atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_CLOSING
, &port
->status
);
1766 * zfcp_fsf_close_physical_port - close physical port
1767 * @erp_action: pointer to struct zfcp_erp_action
1768 * Returns: 0 on success
1770 int zfcp_fsf_close_physical_port(struct zfcp_erp_action
*erp_action
)
1772 struct qdio_buffer_element
*sbale
;
1773 struct zfcp_adapter
*adapter
= erp_action
->adapter
;
1774 struct zfcp_fsf_req
*req
;
1777 spin_lock_bh(&adapter
->req_q_lock
);
1778 if (zfcp_fsf_req_sbal_get(adapter
))
1781 req
= zfcp_fsf_req_create(adapter
, FSF_QTCB_CLOSE_PHYSICAL_PORT
,
1782 ZFCP_REQ_AUTO_CLEANUP
,
1783 adapter
->pool
.fsf_req_erp
);
1785 retval
= PTR_ERR(req
);
1789 sbale
= zfcp_qdio_sbale_req(req
);
1790 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_READ
;
1791 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
1793 req
->data
= erp_action
->port
;
1794 req
->qtcb
->header
.port_handle
= erp_action
->port
->handle
;
1795 req
->erp_action
= erp_action
;
1796 req
->handler
= zfcp_fsf_close_physical_port_handler
;
1797 erp_action
->fsf_req
= req
;
1798 atomic_set_mask(ZFCP_STATUS_PORT_PHYS_CLOSING
,
1799 &erp_action
->port
->status
);
1801 zfcp_fsf_start_erp_timer(req
);
1802 retval
= zfcp_fsf_req_send(req
);
1804 zfcp_fsf_req_free(req
);
1805 erp_action
->fsf_req
= NULL
;
1808 spin_unlock_bh(&adapter
->req_q_lock
);
1812 static void zfcp_fsf_open_unit_handler(struct zfcp_fsf_req
*req
)
1814 struct zfcp_adapter
*adapter
= req
->adapter
;
1815 struct zfcp_unit
*unit
= req
->data
;
1816 struct fsf_qtcb_header
*header
= &req
->qtcb
->header
;
1817 struct fsf_qtcb_bottom_support
*bottom
= &req
->qtcb
->bottom
.support
;
1818 struct fsf_queue_designator
*queue_designator
=
1819 &header
->fsf_status_qual
.fsf_queue_designator
;
1820 int exclusive
, readwrite
;
1822 if (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)
1825 atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED
|
1826 ZFCP_STATUS_COMMON_ACCESS_BOXED
|
1827 ZFCP_STATUS_UNIT_SHARED
|
1828 ZFCP_STATUS_UNIT_READONLY
,
1831 switch (header
->fsf_status
) {
1833 case FSF_PORT_HANDLE_NOT_VALID
:
1834 zfcp_erp_adapter_reopen(unit
->port
->adapter
, 0, 109, req
);
1836 case FSF_LUN_ALREADY_OPEN
:
1838 case FSF_ACCESS_DENIED
:
1839 zfcp_fsf_access_denied_unit(req
, unit
);
1840 atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED
, &unit
->status
);
1841 atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY
, &unit
->status
);
1843 case FSF_PORT_BOXED
:
1844 zfcp_erp_port_boxed(unit
->port
, 51, req
);
1845 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
|
1846 ZFCP_STATUS_FSFREQ_RETRY
;
1848 case FSF_LUN_SHARING_VIOLATION
:
1849 if (header
->fsf_status_qual
.word
[0])
1850 dev_warn(&adapter
->ccw_device
->dev
,
1851 "LUN 0x%Lx on port 0x%Lx is already in "
1852 "use by CSS%d, MIF Image ID %x\n",
1853 (unsigned long long)unit
->fcp_lun
,
1854 (unsigned long long)unit
->port
->wwpn
,
1855 queue_designator
->cssid
,
1856 queue_designator
->hla
);
1858 zfcp_act_eval_err(adapter
,
1859 header
->fsf_status_qual
.word
[2]);
1860 zfcp_erp_unit_access_denied(unit
, 60, req
);
1861 atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED
, &unit
->status
);
1862 atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY
, &unit
->status
);
1863 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1865 case FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED
:
1866 dev_warn(&adapter
->ccw_device
->dev
,
1867 "No handle is available for LUN "
1868 "0x%016Lx on port 0x%016Lx\n",
1869 (unsigned long long)unit
->fcp_lun
,
1870 (unsigned long long)unit
->port
->wwpn
);
1871 zfcp_erp_unit_failed(unit
, 34, req
);
1873 case FSF_INVALID_COMMAND_OPTION
:
1874 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1876 case FSF_ADAPTER_STATUS_AVAILABLE
:
1877 switch (header
->fsf_status_qual
.word
[0]) {
1878 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE
:
1879 zfcp_test_link(unit
->port
);
1881 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED
:
1882 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1888 unit
->handle
= header
->lun_handle
;
1889 atomic_set_mask(ZFCP_STATUS_COMMON_OPEN
, &unit
->status
);
1891 if (!(adapter
->connection_features
& FSF_FEATURE_NPIV_MODE
) &&
1892 (adapter
->adapter_features
& FSF_FEATURE_LUN_SHARING
) &&
1893 (adapter
->ccw_device
->id
.dev_model
!= ZFCP_DEVICE_MODEL_PRIV
)) {
1894 exclusive
= (bottom
->lun_access_info
&
1895 FSF_UNIT_ACCESS_EXCLUSIVE
);
1896 readwrite
= (bottom
->lun_access_info
&
1897 FSF_UNIT_ACCESS_OUTBOUND_TRANSFER
);
1900 atomic_set_mask(ZFCP_STATUS_UNIT_SHARED
,
1904 atomic_set_mask(ZFCP_STATUS_UNIT_READONLY
,
1906 dev_info(&adapter
->ccw_device
->dev
,
1907 "SCSI device at LUN 0x%016Lx on port "
1908 "0x%016Lx opened read-only\n",
1909 (unsigned long long)unit
->fcp_lun
,
1910 (unsigned long long)unit
->port
->wwpn
);
1913 if (exclusive
&& !readwrite
) {
1914 dev_err(&adapter
->ccw_device
->dev
,
1915 "Exclusive read-only access not "
1916 "supported (unit 0x%016Lx, "
1918 (unsigned long long)unit
->fcp_lun
,
1919 (unsigned long long)unit
->port
->wwpn
);
1920 zfcp_erp_unit_failed(unit
, 35, req
);
1921 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1922 zfcp_erp_unit_shutdown(unit
, 0, 80, req
);
1923 } else if (!exclusive
&& readwrite
) {
1924 dev_err(&adapter
->ccw_device
->dev
,
1925 "Shared read-write access not "
1926 "supported (unit 0x%016Lx, port "
1928 (unsigned long long)unit
->fcp_lun
,
1929 (unsigned long long)unit
->port
->wwpn
);
1930 zfcp_erp_unit_failed(unit
, 36, req
);
1931 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1932 zfcp_erp_unit_shutdown(unit
, 0, 81, req
);
1940 * zfcp_fsf_open_unit - open unit
1941 * @erp_action: pointer to struct zfcp_erp_action
1942 * Returns: 0 on success, error otherwise
1944 int zfcp_fsf_open_unit(struct zfcp_erp_action
*erp_action
)
1946 struct qdio_buffer_element
*sbale
;
1947 struct zfcp_adapter
*adapter
= erp_action
->adapter
;
1948 struct zfcp_fsf_req
*req
;
1951 spin_lock_bh(&adapter
->req_q_lock
);
1952 if (zfcp_fsf_req_sbal_get(adapter
))
1955 req
= zfcp_fsf_req_create(adapter
, FSF_QTCB_OPEN_LUN
,
1956 ZFCP_REQ_AUTO_CLEANUP
,
1957 adapter
->pool
.fsf_req_erp
);
1959 retval
= PTR_ERR(req
);
1963 sbale
= zfcp_qdio_sbale_req(req
);
1964 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_READ
;
1965 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
1967 req
->qtcb
->header
.port_handle
= erp_action
->port
->handle
;
1968 req
->qtcb
->bottom
.support
.fcp_lun
= erp_action
->unit
->fcp_lun
;
1969 req
->handler
= zfcp_fsf_open_unit_handler
;
1970 req
->data
= erp_action
->unit
;
1971 req
->erp_action
= erp_action
;
1972 erp_action
->fsf_req
= req
;
1974 if (!(adapter
->connection_features
& FSF_FEATURE_NPIV_MODE
))
1975 req
->qtcb
->bottom
.support
.option
= FSF_OPEN_LUN_SUPPRESS_BOXING
;
1977 zfcp_fsf_start_erp_timer(req
);
1978 retval
= zfcp_fsf_req_send(req
);
1980 zfcp_fsf_req_free(req
);
1981 erp_action
->fsf_req
= NULL
;
1984 spin_unlock_bh(&adapter
->req_q_lock
);
1988 static void zfcp_fsf_close_unit_handler(struct zfcp_fsf_req
*req
)
1990 struct zfcp_unit
*unit
= req
->data
;
1992 if (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)
1995 switch (req
->qtcb
->header
.fsf_status
) {
1996 case FSF_PORT_HANDLE_NOT_VALID
:
1997 zfcp_erp_adapter_reopen(unit
->port
->adapter
, 0, 110, req
);
1998 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
2000 case FSF_LUN_HANDLE_NOT_VALID
:
2001 zfcp_erp_port_reopen(unit
->port
, 0, 111, req
);
2002 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
2004 case FSF_PORT_BOXED
:
2005 zfcp_erp_port_boxed(unit
->port
, 52, req
);
2006 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
|
2007 ZFCP_STATUS_FSFREQ_RETRY
;
2009 case FSF_ADAPTER_STATUS_AVAILABLE
:
2010 switch (req
->qtcb
->header
.fsf_status_qual
.word
[0]) {
2011 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE
:
2012 zfcp_test_link(unit
->port
);
2014 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED
:
2015 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
2020 atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN
, &unit
->status
);
2026 * zfcp_fsf_close_unit - close zfcp unit
2027 * @erp_action: pointer to struct zfcp_unit
2028 * Returns: 0 on success, error otherwise
2030 int zfcp_fsf_close_unit(struct zfcp_erp_action
*erp_action
)
2032 struct qdio_buffer_element
*sbale
;
2033 struct zfcp_adapter
*adapter
= erp_action
->adapter
;
2034 struct zfcp_fsf_req
*req
;
2037 spin_lock_bh(&adapter
->req_q_lock
);
2038 if (zfcp_fsf_req_sbal_get(adapter
))
2040 req
= zfcp_fsf_req_create(adapter
, FSF_QTCB_CLOSE_LUN
,
2041 ZFCP_REQ_AUTO_CLEANUP
,
2042 adapter
->pool
.fsf_req_erp
);
2044 retval
= PTR_ERR(req
);
2048 sbale
= zfcp_qdio_sbale_req(req
);
2049 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_READ
;
2050 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
2052 req
->qtcb
->header
.port_handle
= erp_action
->port
->handle
;
2053 req
->qtcb
->header
.lun_handle
= erp_action
->unit
->handle
;
2054 req
->handler
= zfcp_fsf_close_unit_handler
;
2055 req
->data
= erp_action
->unit
;
2056 req
->erp_action
= erp_action
;
2057 erp_action
->fsf_req
= req
;
2059 zfcp_fsf_start_erp_timer(req
);
2060 retval
= zfcp_fsf_req_send(req
);
2062 zfcp_fsf_req_free(req
);
2063 erp_action
->fsf_req
= NULL
;
2066 spin_unlock_bh(&adapter
->req_q_lock
);
2070 static void zfcp_fsf_update_lat(struct fsf_latency_record
*lat_rec
, u32 lat
)
2072 lat_rec
->sum
+= lat
;
2073 lat_rec
->min
= min(lat_rec
->min
, lat
);
2074 lat_rec
->max
= max(lat_rec
->max
, lat
);
2077 static void zfcp_fsf_req_latency(struct zfcp_fsf_req
*req
)
2079 struct fsf_qual_latency_info
*lat_inf
;
2080 struct latency_cont
*lat
;
2081 struct zfcp_unit
*unit
= req
->unit
;
2082 unsigned long flags
;
2084 lat_inf
= &req
->qtcb
->prefix
.prot_status_qual
.latency_info
;
2086 switch (req
->qtcb
->bottom
.io
.data_direction
) {
2087 case FSF_DATADIR_READ
:
2088 lat
= &unit
->latencies
.read
;
2090 case FSF_DATADIR_WRITE
:
2091 lat
= &unit
->latencies
.write
;
2093 case FSF_DATADIR_CMND
:
2094 lat
= &unit
->latencies
.cmd
;
2100 spin_lock_irqsave(&unit
->latencies
.lock
, flags
);
2101 zfcp_fsf_update_lat(&lat
->channel
, lat_inf
->channel_lat
);
2102 zfcp_fsf_update_lat(&lat
->fabric
, lat_inf
->fabric_lat
);
2104 spin_unlock_irqrestore(&unit
->latencies
.lock
, flags
);
2107 #ifdef CONFIG_BLK_DEV_IO_TRACE
2108 static void zfcp_fsf_trace_latency(struct zfcp_fsf_req
*fsf_req
)
2110 struct fsf_qual_latency_info
*lat_inf
;
2111 struct scsi_cmnd
*scsi_cmnd
= (struct scsi_cmnd
*)fsf_req
->data
;
2112 struct request
*req
= scsi_cmnd
->request
;
2113 struct zfcp_blk_drv_data trace
;
2114 int ticks
= fsf_req
->adapter
->timer_ticks
;
2117 trace
.magic
= ZFCP_BLK_DRV_DATA_MAGIC
;
2118 if (fsf_req
->adapter
->adapter_features
& FSF_FEATURE_MEASUREMENT_DATA
) {
2119 trace
.flags
|= ZFCP_BLK_LAT_VALID
;
2120 lat_inf
= &fsf_req
->qtcb
->prefix
.prot_status_qual
.latency_info
;
2121 trace
.channel_lat
= lat_inf
->channel_lat
* ticks
;
2122 trace
.fabric_lat
= lat_inf
->fabric_lat
* ticks
;
2124 if (fsf_req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)
2125 trace
.flags
|= ZFCP_BLK_REQ_ERROR
;
2126 trace
.inb_usage
= fsf_req
->qdio_inb_usage
;
2127 trace
.outb_usage
= fsf_req
->qdio_outb_usage
;
2129 blk_add_driver_data(req
->q
, req
, &trace
, sizeof(trace
));
2132 static inline void zfcp_fsf_trace_latency(struct zfcp_fsf_req
*fsf_req
)
2137 static void zfcp_fsf_send_fcp_command_task_handler(struct zfcp_fsf_req
*req
)
2139 struct scsi_cmnd
*scpnt
;
2140 struct fcp_rsp_iu
*fcp_rsp_iu
= (struct fcp_rsp_iu
*)
2141 &(req
->qtcb
->bottom
.io
.fcp_rsp
);
2143 char *fcp_rsp_info
= (unsigned char *) &fcp_rsp_iu
[1];
2144 unsigned long flags
;
2146 read_lock_irqsave(&req
->adapter
->abort_lock
, flags
);
2149 if (unlikely(!scpnt
)) {
2150 read_unlock_irqrestore(&req
->adapter
->abort_lock
, flags
);
2154 if (unlikely(req
->status
& ZFCP_STATUS_FSFREQ_ABORTED
)) {
2155 set_host_byte(scpnt
, DID_SOFT_ERROR
);
2156 set_driver_byte(scpnt
, SUGGEST_RETRY
);
2157 goto skip_fsfstatus
;
2160 if (unlikely(req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)) {
2161 set_host_byte(scpnt
, DID_ERROR
);
2162 goto skip_fsfstatus
;
2165 set_msg_byte(scpnt
, COMMAND_COMPLETE
);
2167 scpnt
->result
|= fcp_rsp_iu
->scsi_status
;
2169 if (req
->adapter
->adapter_features
& FSF_FEATURE_MEASUREMENT_DATA
)
2170 zfcp_fsf_req_latency(req
);
2172 zfcp_fsf_trace_latency(req
);
2174 if (unlikely(fcp_rsp_iu
->validity
.bits
.fcp_rsp_len_valid
)) {
2175 if (fcp_rsp_info
[3] == RSP_CODE_GOOD
)
2176 set_host_byte(scpnt
, DID_OK
);
2178 set_host_byte(scpnt
, DID_ERROR
);
2179 goto skip_fsfstatus
;
2183 if (unlikely(fcp_rsp_iu
->validity
.bits
.fcp_sns_len_valid
)) {
2184 sns_len
= FSF_FCP_RSP_SIZE
- sizeof(struct fcp_rsp_iu
) +
2185 fcp_rsp_iu
->fcp_rsp_len
;
2186 sns_len
= min(sns_len
, (u32
) SCSI_SENSE_BUFFERSIZE
);
2187 sns_len
= min(sns_len
, fcp_rsp_iu
->fcp_sns_len
);
2189 memcpy(scpnt
->sense_buffer
,
2190 zfcp_get_fcp_sns_info_ptr(fcp_rsp_iu
), sns_len
);
2193 if (unlikely(fcp_rsp_iu
->validity
.bits
.fcp_resid_under
)) {
2194 scsi_set_resid(scpnt
, fcp_rsp_iu
->fcp_resid
);
2195 if (scsi_bufflen(scpnt
) - scsi_get_resid(scpnt
) <
2197 set_host_byte(scpnt
, DID_ERROR
);
2200 if (scpnt
->result
!= 0)
2201 zfcp_scsi_dbf_event_result("erro", 3, req
->adapter
, scpnt
, req
);
2202 else if (scpnt
->retries
> 0)
2203 zfcp_scsi_dbf_event_result("retr", 4, req
->adapter
, scpnt
, req
);
2205 zfcp_scsi_dbf_event_result("norm", 6, req
->adapter
, scpnt
, req
);
2207 scpnt
->host_scribble
= NULL
;
2208 (scpnt
->scsi_done
) (scpnt
);
2210 * We must hold this lock until scsi_done has been called.
2211 * Otherwise we may call scsi_done after abort regarding this
2212 * command has completed.
2213 * Note: scsi_done must not block!
2215 read_unlock_irqrestore(&req
->adapter
->abort_lock
, flags
);
2218 static void zfcp_fsf_send_fcp_ctm_handler(struct zfcp_fsf_req
*req
)
2220 struct fcp_rsp_iu
*fcp_rsp_iu
= (struct fcp_rsp_iu
*)
2221 &(req
->qtcb
->bottom
.io
.fcp_rsp
);
2222 char *fcp_rsp_info
= (unsigned char *) &fcp_rsp_iu
[1];
2224 if ((fcp_rsp_info
[3] != RSP_CODE_GOOD
) ||
2225 (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
))
2226 req
->status
|= ZFCP_STATUS_FSFREQ_TMFUNCFAILED
;
2230 static void zfcp_fsf_send_fcp_command_handler(struct zfcp_fsf_req
*req
)
2232 struct zfcp_unit
*unit
;
2233 struct fsf_qtcb_header
*header
= &req
->qtcb
->header
;
2235 if (unlikely(req
->status
& ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT
))
2240 if (unlikely(req
->status
& ZFCP_STATUS_FSFREQ_ERROR
))
2241 goto skip_fsfstatus
;
2243 switch (header
->fsf_status
) {
2244 case FSF_HANDLE_MISMATCH
:
2245 case FSF_PORT_HANDLE_NOT_VALID
:
2246 zfcp_erp_adapter_reopen(unit
->port
->adapter
, 0, 112, req
);
2247 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
2249 case FSF_FCPLUN_NOT_VALID
:
2250 case FSF_LUN_HANDLE_NOT_VALID
:
2251 zfcp_erp_port_reopen(unit
->port
, 0, 113, req
);
2252 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
2254 case FSF_SERVICE_CLASS_NOT_SUPPORTED
:
2255 zfcp_fsf_class_not_supp(req
);
2257 case FSF_ACCESS_DENIED
:
2258 zfcp_fsf_access_denied_unit(req
, unit
);
2260 case FSF_DIRECTION_INDICATOR_NOT_VALID
:
2261 dev_err(&req
->adapter
->ccw_device
->dev
,
2262 "Incorrect direction %d, unit 0x%016Lx on port "
2263 "0x%016Lx closed\n",
2264 req
->qtcb
->bottom
.io
.data_direction
,
2265 (unsigned long long)unit
->fcp_lun
,
2266 (unsigned long long)unit
->port
->wwpn
);
2267 zfcp_erp_adapter_shutdown(unit
->port
->adapter
, 0, 133, req
);
2268 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
2270 case FSF_CMND_LENGTH_NOT_VALID
:
2271 dev_err(&req
->adapter
->ccw_device
->dev
,
2272 "Incorrect CDB length %d, unit 0x%016Lx on "
2273 "port 0x%016Lx closed\n",
2274 req
->qtcb
->bottom
.io
.fcp_cmnd_length
,
2275 (unsigned long long)unit
->fcp_lun
,
2276 (unsigned long long)unit
->port
->wwpn
);
2277 zfcp_erp_adapter_shutdown(unit
->port
->adapter
, 0, 134, req
);
2278 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
2280 case FSF_PORT_BOXED
:
2281 zfcp_erp_port_boxed(unit
->port
, 53, req
);
2282 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
|
2283 ZFCP_STATUS_FSFREQ_RETRY
;
2286 zfcp_erp_unit_boxed(unit
, 54, req
);
2287 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
|
2288 ZFCP_STATUS_FSFREQ_RETRY
;
2290 case FSF_ADAPTER_STATUS_AVAILABLE
:
2291 if (header
->fsf_status_qual
.word
[0] ==
2292 FSF_SQ_INVOKE_LINK_TEST_PROCEDURE
)
2293 zfcp_test_link(unit
->port
);
2294 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
2298 if (req
->status
& ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT
)
2299 zfcp_fsf_send_fcp_ctm_handler(req
);
2301 zfcp_fsf_send_fcp_command_task_handler(req
);
2303 zfcp_unit_put(unit
);
2307 static void zfcp_set_fcp_dl(struct fcp_cmnd_iu
*fcp_cmd
, u32 fcp_dl
)
2312 * fcp_dl_addr = start address of fcp_cmnd structure +
2313 * size of fixed part + size of dynamically sized add_dcp_cdb field
2314 * SEE FCP-2 documentation
2316 fcp_dl_ptr
= (u32
*) ((unsigned char *) &fcp_cmd
[1] +
2317 (fcp_cmd
->add_fcp_cdb_length
<< 2));
2318 *fcp_dl_ptr
= fcp_dl
;
2322 * zfcp_fsf_send_fcp_command_task - initiate an FCP command (for a SCSI command)
2323 * @adapter: adapter where scsi command is issued
2324 * @unit: unit where command is sent to
2325 * @scsi_cmnd: scsi command to be sent
2326 * @timer: timer to be started when request is initiated
2327 * @req_flags: flags for fsf_request
2329 int zfcp_fsf_send_fcp_command_task(struct zfcp_adapter
*adapter
,
2330 struct zfcp_unit
*unit
,
2331 struct scsi_cmnd
*scsi_cmnd
,
2332 int use_timer
, int req_flags
)
2334 struct zfcp_fsf_req
*req
;
2335 struct fcp_cmnd_iu
*fcp_cmnd_iu
;
2336 unsigned int sbtype
;
2337 int real_bytes
, retval
= -EIO
;
2339 if (unlikely(!(atomic_read(&unit
->status
) &
2340 ZFCP_STATUS_COMMON_UNBLOCKED
)))
2343 spin_lock(&adapter
->req_q_lock
);
2344 if (!zfcp_fsf_sbal_available(adapter
))
2346 req
= zfcp_fsf_req_create(adapter
, FSF_QTCB_FCP_CMND
, req_flags
,
2347 adapter
->pool
.fsf_req_scsi
);
2349 retval
= PTR_ERR(req
);
2353 zfcp_unit_get(unit
);
2355 req
->data
= scsi_cmnd
;
2356 req
->handler
= zfcp_fsf_send_fcp_command_handler
;
2357 req
->qtcb
->header
.lun_handle
= unit
->handle
;
2358 req
->qtcb
->header
.port_handle
= unit
->port
->handle
;
2359 req
->qtcb
->bottom
.io
.service_class
= FSF_CLASS_3
;
2361 scsi_cmnd
->host_scribble
= (unsigned char *) req
->req_id
;
2363 fcp_cmnd_iu
= (struct fcp_cmnd_iu
*) &(req
->qtcb
->bottom
.io
.fcp_cmnd
);
2364 fcp_cmnd_iu
->fcp_lun
= unit
->fcp_lun
;
2366 * set depending on data direction:
2367 * data direction bits in SBALE (SB Type)
2368 * data direction bits in QTCB
2369 * data direction bits in FCP_CMND IU
2371 switch (scsi_cmnd
->sc_data_direction
) {
2373 req
->qtcb
->bottom
.io
.data_direction
= FSF_DATADIR_CMND
;
2374 sbtype
= SBAL_FLAGS0_TYPE_READ
;
2376 case DMA_FROM_DEVICE
:
2377 req
->qtcb
->bottom
.io
.data_direction
= FSF_DATADIR_READ
;
2378 sbtype
= SBAL_FLAGS0_TYPE_READ
;
2379 fcp_cmnd_iu
->rddata
= 1;
2382 req
->qtcb
->bottom
.io
.data_direction
= FSF_DATADIR_WRITE
;
2383 sbtype
= SBAL_FLAGS0_TYPE_WRITE
;
2384 fcp_cmnd_iu
->wddata
= 1;
2386 case DMA_BIDIRECTIONAL
:
2389 goto failed_scsi_cmnd
;
2392 if (likely((scsi_cmnd
->device
->simple_tags
) ||
2393 ((atomic_read(&unit
->status
) & ZFCP_STATUS_UNIT_READONLY
) &&
2394 (atomic_read(&unit
->status
) & ZFCP_STATUS_UNIT_SHARED
))))
2395 fcp_cmnd_iu
->task_attribute
= SIMPLE_Q
;
2397 fcp_cmnd_iu
->task_attribute
= UNTAGGED
;
2399 if (unlikely(scsi_cmnd
->cmd_len
> FCP_CDB_LENGTH
))
2400 fcp_cmnd_iu
->add_fcp_cdb_length
=
2401 (scsi_cmnd
->cmd_len
- FCP_CDB_LENGTH
) >> 2;
2403 memcpy(fcp_cmnd_iu
->fcp_cdb
, scsi_cmnd
->cmnd
, scsi_cmnd
->cmd_len
);
2405 req
->qtcb
->bottom
.io
.fcp_cmnd_length
= sizeof(struct fcp_cmnd_iu
) +
2406 fcp_cmnd_iu
->add_fcp_cdb_length
+ sizeof(u32
);
2408 real_bytes
= zfcp_qdio_sbals_from_sg(req
, sbtype
,
2409 scsi_sglist(scsi_cmnd
),
2410 FSF_MAX_SBALS_PER_REQ
);
2411 if (unlikely(real_bytes
< 0)) {
2412 if (req
->sbal_number
< FSF_MAX_SBALS_PER_REQ
)
2415 dev_err(&adapter
->ccw_device
->dev
,
2416 "Oversize data package, unit 0x%016Lx "
2417 "on port 0x%016Lx closed\n",
2418 (unsigned long long)unit
->fcp_lun
,
2419 (unsigned long long)unit
->port
->wwpn
);
2420 zfcp_erp_unit_shutdown(unit
, 0, 131, req
);
2423 goto failed_scsi_cmnd
;
2426 zfcp_set_fcp_dl(fcp_cmnd_iu
, real_bytes
);
2429 zfcp_fsf_start_timer(req
, ZFCP_FSF_REQUEST_TIMEOUT
);
2431 retval
= zfcp_fsf_req_send(req
);
2432 if (unlikely(retval
))
2433 goto failed_scsi_cmnd
;
2438 zfcp_unit_put(unit
);
2439 zfcp_fsf_req_free(req
);
2440 scsi_cmnd
->host_scribble
= NULL
;
2442 spin_unlock(&adapter
->req_q_lock
);
2447 * zfcp_fsf_send_fcp_ctm - send SCSI task management command
2448 * @adapter: pointer to struct zfcp-adapter
2449 * @unit: pointer to struct zfcp_unit
2450 * @tm_flags: unsigned byte for task management flags
2451 * @req_flags: int request flags
2452 * Returns: on success pointer to struct fsf_req, NULL otherwise
2454 struct zfcp_fsf_req
*zfcp_fsf_send_fcp_ctm(struct zfcp_adapter
*adapter
,
2455 struct zfcp_unit
*unit
,
2456 u8 tm_flags
, int req_flags
)
2458 struct qdio_buffer_element
*sbale
;
2459 struct zfcp_fsf_req
*req
= NULL
;
2460 struct fcp_cmnd_iu
*fcp_cmnd_iu
;
2462 if (unlikely(!(atomic_read(&unit
->status
) &
2463 ZFCP_STATUS_COMMON_UNBLOCKED
)))
2466 spin_lock(&adapter
->req_q_lock
);
2467 if (!zfcp_fsf_sbal_available(adapter
))
2469 req
= zfcp_fsf_req_create(adapter
, FSF_QTCB_FCP_CMND
, req_flags
,
2470 adapter
->pool
.fsf_req_scsi
);
2476 req
->status
|= ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT
;
2478 req
->handler
= zfcp_fsf_send_fcp_command_handler
;
2479 req
->qtcb
->header
.lun_handle
= unit
->handle
;
2480 req
->qtcb
->header
.port_handle
= unit
->port
->handle
;
2481 req
->qtcb
->bottom
.io
.data_direction
= FSF_DATADIR_CMND
;
2482 req
->qtcb
->bottom
.io
.service_class
= FSF_CLASS_3
;
2483 req
->qtcb
->bottom
.io
.fcp_cmnd_length
= sizeof(struct fcp_cmnd_iu
) +
2486 sbale
= zfcp_qdio_sbale_req(req
);
2487 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_WRITE
;
2488 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
2490 fcp_cmnd_iu
= (struct fcp_cmnd_iu
*) &req
->qtcb
->bottom
.io
.fcp_cmnd
;
2491 fcp_cmnd_iu
->fcp_lun
= unit
->fcp_lun
;
2492 fcp_cmnd_iu
->task_management_flags
= tm_flags
;
2494 zfcp_fsf_start_timer(req
, ZFCP_SCSI_ER_TIMEOUT
);
2495 if (!zfcp_fsf_req_send(req
))
2498 zfcp_fsf_req_free(req
);
2501 spin_unlock(&adapter
->req_q_lock
);
2505 static void zfcp_fsf_control_file_handler(struct zfcp_fsf_req
*req
)
2507 if (req
->qtcb
->header
.fsf_status
!= FSF_GOOD
)
2508 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
2512 * zfcp_fsf_control_file - control file upload/download
2513 * @adapter: pointer to struct zfcp_adapter
2514 * @fsf_cfdc: pointer to struct zfcp_fsf_cfdc
2515 * Returns: on success pointer to struct zfcp_fsf_req, NULL otherwise
2517 struct zfcp_fsf_req
*zfcp_fsf_control_file(struct zfcp_adapter
*adapter
,
2518 struct zfcp_fsf_cfdc
*fsf_cfdc
)
2520 struct qdio_buffer_element
*sbale
;
2521 struct zfcp_fsf_req
*req
= NULL
;
2522 struct fsf_qtcb_bottom_support
*bottom
;
2523 int direction
, retval
= -EIO
, bytes
;
2525 if (!(adapter
->adapter_features
& FSF_FEATURE_CFDC
))
2526 return ERR_PTR(-EOPNOTSUPP
);
2528 switch (fsf_cfdc
->command
) {
2529 case FSF_QTCB_DOWNLOAD_CONTROL_FILE
:
2530 direction
= SBAL_FLAGS0_TYPE_WRITE
;
2532 case FSF_QTCB_UPLOAD_CONTROL_FILE
:
2533 direction
= SBAL_FLAGS0_TYPE_READ
;
2536 return ERR_PTR(-EINVAL
);
2539 spin_lock_bh(&adapter
->req_q_lock
);
2540 if (zfcp_fsf_req_sbal_get(adapter
))
2543 req
= zfcp_fsf_req_create(adapter
, fsf_cfdc
->command
, 0, NULL
);
2549 req
->handler
= zfcp_fsf_control_file_handler
;
2551 sbale
= zfcp_qdio_sbale_req(req
);
2552 sbale
[0].flags
|= direction
;
2554 bottom
= &req
->qtcb
->bottom
.support
;
2555 bottom
->operation_subtype
= FSF_CFDC_OPERATION_SUBTYPE
;
2556 bottom
->option
= fsf_cfdc
->option
;
2558 bytes
= zfcp_qdio_sbals_from_sg(req
, direction
, fsf_cfdc
->sg
,
2559 FSF_MAX_SBALS_PER_REQ
);
2560 if (bytes
!= ZFCP_CFDC_MAX_SIZE
) {
2562 zfcp_fsf_req_free(req
);
2566 zfcp_fsf_start_timer(req
, ZFCP_FSF_REQUEST_TIMEOUT
);
2567 retval
= zfcp_fsf_req_send(req
);
2569 spin_unlock_bh(&adapter
->req_q_lock
);
2572 wait_event(req
->completion_wq
,
2573 req
->status
& ZFCP_STATUS_FSFREQ_COMPLETED
);
2576 return ERR_PTR(retval
);