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>
15 #define ZFCP_REQ_AUTO_CLEANUP 0x00000002
16 #define ZFCP_REQ_NO_QTCB 0x00000008
18 static void zfcp_fsf_request_timeout_handler(unsigned long data
)
20 struct zfcp_adapter
*adapter
= (struct zfcp_adapter
*) data
;
21 zfcp_erp_adapter_reopen(adapter
, ZFCP_STATUS_COMMON_ERP_FAILED
,
25 static void zfcp_fsf_start_timer(struct zfcp_fsf_req
*fsf_req
,
26 unsigned long timeout
)
28 fsf_req
->timer
.function
= zfcp_fsf_request_timeout_handler
;
29 fsf_req
->timer
.data
= (unsigned long) fsf_req
->adapter
;
30 fsf_req
->timer
.expires
= jiffies
+ timeout
;
31 add_timer(&fsf_req
->timer
);
34 static void zfcp_fsf_start_erp_timer(struct zfcp_fsf_req
*fsf_req
)
36 BUG_ON(!fsf_req
->erp_action
);
37 fsf_req
->timer
.function
= zfcp_erp_timeout_handler
;
38 fsf_req
->timer
.data
= (unsigned long) fsf_req
->erp_action
;
39 fsf_req
->timer
.expires
= jiffies
+ 30 * HZ
;
40 add_timer(&fsf_req
->timer
);
43 /* association between FSF command and FSF QTCB type */
44 static u32 fsf_qtcb_type
[] = {
45 [FSF_QTCB_FCP_CMND
] = FSF_IO_COMMAND
,
46 [FSF_QTCB_ABORT_FCP_CMND
] = FSF_SUPPORT_COMMAND
,
47 [FSF_QTCB_OPEN_PORT_WITH_DID
] = FSF_SUPPORT_COMMAND
,
48 [FSF_QTCB_OPEN_LUN
] = FSF_SUPPORT_COMMAND
,
49 [FSF_QTCB_CLOSE_LUN
] = FSF_SUPPORT_COMMAND
,
50 [FSF_QTCB_CLOSE_PORT
] = FSF_SUPPORT_COMMAND
,
51 [FSF_QTCB_CLOSE_PHYSICAL_PORT
] = FSF_SUPPORT_COMMAND
,
52 [FSF_QTCB_SEND_ELS
] = FSF_SUPPORT_COMMAND
,
53 [FSF_QTCB_SEND_GENERIC
] = FSF_SUPPORT_COMMAND
,
54 [FSF_QTCB_EXCHANGE_CONFIG_DATA
] = FSF_CONFIG_COMMAND
,
55 [FSF_QTCB_EXCHANGE_PORT_DATA
] = FSF_PORT_COMMAND
,
56 [FSF_QTCB_DOWNLOAD_CONTROL_FILE
] = FSF_SUPPORT_COMMAND
,
57 [FSF_QTCB_UPLOAD_CONTROL_FILE
] = FSF_SUPPORT_COMMAND
60 static void zfcp_act_eval_err(struct zfcp_adapter
*adapter
, u32 table
)
62 u16 subtable
= table
>> 16;
63 u16 rule
= table
& 0xffff;
64 const char *act_type
[] = { "unknown", "OS", "WWPN", "DID", "LUN" };
66 if (subtable
&& subtable
< ARRAY_SIZE(act_type
))
67 dev_warn(&adapter
->ccw_device
->dev
,
68 "Access denied according to ACT rule type %s, "
69 "rule %d\n", act_type
[subtable
], rule
);
72 static void zfcp_fsf_access_denied_port(struct zfcp_fsf_req
*req
,
73 struct zfcp_port
*port
)
75 struct fsf_qtcb_header
*header
= &req
->qtcb
->header
;
76 dev_warn(&req
->adapter
->ccw_device
->dev
,
77 "Access denied to port 0x%016Lx\n",
78 (unsigned long long)port
->wwpn
);
79 zfcp_act_eval_err(req
->adapter
, header
->fsf_status_qual
.halfword
[0]);
80 zfcp_act_eval_err(req
->adapter
, header
->fsf_status_qual
.halfword
[1]);
81 zfcp_erp_port_access_denied(port
, "fspad_1", req
);
82 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
85 static void zfcp_fsf_access_denied_unit(struct zfcp_fsf_req
*req
,
86 struct zfcp_unit
*unit
)
88 struct fsf_qtcb_header
*header
= &req
->qtcb
->header
;
89 dev_warn(&req
->adapter
->ccw_device
->dev
,
90 "Access denied to unit 0x%016Lx on port 0x%016Lx\n",
91 (unsigned long long)unit
->fcp_lun
,
92 (unsigned long long)unit
->port
->wwpn
);
93 zfcp_act_eval_err(req
->adapter
, header
->fsf_status_qual
.halfword
[0]);
94 zfcp_act_eval_err(req
->adapter
, header
->fsf_status_qual
.halfword
[1]);
95 zfcp_erp_unit_access_denied(unit
, "fsuad_1", req
);
96 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
99 static void zfcp_fsf_class_not_supp(struct zfcp_fsf_req
*req
)
101 dev_err(&req
->adapter
->ccw_device
->dev
, "FCP device not "
102 "operational because of an unsupported FC class\n");
103 zfcp_erp_adapter_shutdown(req
->adapter
, 0, "fscns_1", req
);
104 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
108 * zfcp_fsf_req_free - free memory used by fsf request
109 * @fsf_req: pointer to struct zfcp_fsf_req
111 void zfcp_fsf_req_free(struct zfcp_fsf_req
*req
)
113 if (likely(req
->pool
)) {
114 mempool_free(req
, req
->pool
);
119 kmem_cache_free(zfcp_data
.fsf_req_qtcb_cache
, req
);
125 * zfcp_fsf_req_dismiss_all - dismiss all fsf requests
126 * @adapter: pointer to struct zfcp_adapter
128 * Never ever call this without shutting down the adapter first.
129 * Otherwise the adapter would continue using and corrupting s390 storage.
130 * Included BUG_ON() call to ensure this is done.
131 * ERP is supposed to be the only user of this function.
133 void zfcp_fsf_req_dismiss_all(struct zfcp_adapter
*adapter
)
135 struct zfcp_fsf_req
*req
, *tmp
;
137 LIST_HEAD(remove_queue
);
140 BUG_ON(atomic_read(&adapter
->status
) & ZFCP_STATUS_ADAPTER_QDIOUP
);
141 spin_lock_irqsave(&adapter
->req_list_lock
, flags
);
142 for (i
= 0; i
< REQUEST_LIST_SIZE
; i
++)
143 list_splice_init(&adapter
->req_list
[i
], &remove_queue
);
144 spin_unlock_irqrestore(&adapter
->req_list_lock
, flags
);
146 list_for_each_entry_safe(req
, tmp
, &remove_queue
, list
) {
147 list_del(&req
->list
);
148 req
->status
|= ZFCP_STATUS_FSFREQ_DISMISSED
;
149 zfcp_fsf_req_complete(req
);
153 static void zfcp_fsf_status_read_port_closed(struct zfcp_fsf_req
*req
)
155 struct fsf_status_read_buffer
*sr_buf
= req
->data
;
156 struct zfcp_adapter
*adapter
= req
->adapter
;
157 struct zfcp_port
*port
;
158 int d_id
= sr_buf
->d_id
& ZFCP_DID_MASK
;
161 read_lock_irqsave(&zfcp_data
.config_lock
, flags
);
162 list_for_each_entry(port
, &adapter
->port_list_head
, list
)
163 if (port
->d_id
== d_id
) {
164 read_unlock_irqrestore(&zfcp_data
.config_lock
, flags
);
165 zfcp_erp_port_reopen(port
, 0, "fssrpc1", req
);
168 read_unlock_irqrestore(&zfcp_data
.config_lock
, flags
);
171 static void zfcp_fsf_link_down_info_eval(struct zfcp_fsf_req
*req
, char *id
,
172 struct fsf_link_down_info
*link_down
)
174 struct zfcp_adapter
*adapter
= req
->adapter
;
177 if (atomic_read(&adapter
->status
) & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED
)
180 atomic_set_mask(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED
, &adapter
->status
);
182 read_lock_irqsave(&zfcp_data
.config_lock
, flags
);
183 zfcp_scsi_schedule_rports_block(adapter
);
184 read_unlock_irqrestore(&zfcp_data
.config_lock
, flags
);
189 switch (link_down
->error_code
) {
190 case FSF_PSQ_LINK_NO_LIGHT
:
191 dev_warn(&req
->adapter
->ccw_device
->dev
,
192 "There is no light signal from the local "
193 "fibre channel cable\n");
195 case FSF_PSQ_LINK_WRAP_PLUG
:
196 dev_warn(&req
->adapter
->ccw_device
->dev
,
197 "There is a wrap plug instead of a fibre "
200 case FSF_PSQ_LINK_NO_FCP
:
201 dev_warn(&req
->adapter
->ccw_device
->dev
,
202 "The adjacent fibre channel node does not "
205 case FSF_PSQ_LINK_FIRMWARE_UPDATE
:
206 dev_warn(&req
->adapter
->ccw_device
->dev
,
207 "The FCP device is suspended because of a "
208 "firmware update\n");
210 case FSF_PSQ_LINK_INVALID_WWPN
:
211 dev_warn(&req
->adapter
->ccw_device
->dev
,
212 "The FCP device detected a WWPN that is "
213 "duplicate or not valid\n");
215 case FSF_PSQ_LINK_NO_NPIV_SUPPORT
:
216 dev_warn(&req
->adapter
->ccw_device
->dev
,
217 "The fibre channel fabric does not support NPIV\n");
219 case FSF_PSQ_LINK_NO_FCP_RESOURCES
:
220 dev_warn(&req
->adapter
->ccw_device
->dev
,
221 "The FCP adapter cannot support more NPIV ports\n");
223 case FSF_PSQ_LINK_NO_FABRIC_RESOURCES
:
224 dev_warn(&req
->adapter
->ccw_device
->dev
,
225 "The adjacent switch cannot support "
226 "more NPIV ports\n");
228 case FSF_PSQ_LINK_FABRIC_LOGIN_UNABLE
:
229 dev_warn(&req
->adapter
->ccw_device
->dev
,
230 "The FCP adapter could not log in to the "
231 "fibre channel fabric\n");
233 case FSF_PSQ_LINK_WWPN_ASSIGNMENT_CORRUPTED
:
234 dev_warn(&req
->adapter
->ccw_device
->dev
,
235 "The WWPN assignment file on the FCP adapter "
236 "has been damaged\n");
238 case FSF_PSQ_LINK_MODE_TABLE_CURRUPTED
:
239 dev_warn(&req
->adapter
->ccw_device
->dev
,
240 "The mode table on the FCP adapter "
241 "has been damaged\n");
243 case FSF_PSQ_LINK_NO_WWPN_ASSIGNMENT
:
244 dev_warn(&req
->adapter
->ccw_device
->dev
,
245 "All NPIV ports on the FCP adapter have "
249 dev_warn(&req
->adapter
->ccw_device
->dev
,
250 "The link between the FCP adapter and "
251 "the FC fabric is down\n");
254 zfcp_erp_adapter_failed(adapter
, id
, req
);
257 static void zfcp_fsf_status_read_link_down(struct zfcp_fsf_req
*req
)
259 struct fsf_status_read_buffer
*sr_buf
= req
->data
;
260 struct fsf_link_down_info
*ldi
=
261 (struct fsf_link_down_info
*) &sr_buf
->payload
;
263 switch (sr_buf
->status_subtype
) {
264 case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK
:
265 zfcp_fsf_link_down_info_eval(req
, "fssrld1", ldi
);
267 case FSF_STATUS_READ_SUB_FDISC_FAILED
:
268 zfcp_fsf_link_down_info_eval(req
, "fssrld2", ldi
);
270 case FSF_STATUS_READ_SUB_FIRMWARE_UPDATE
:
271 zfcp_fsf_link_down_info_eval(req
, "fssrld3", NULL
);
275 static void zfcp_fsf_status_read_handler(struct zfcp_fsf_req
*req
)
277 struct zfcp_adapter
*adapter
= req
->adapter
;
278 struct fsf_status_read_buffer
*sr_buf
= req
->data
;
280 if (req
->status
& ZFCP_STATUS_FSFREQ_DISMISSED
) {
281 zfcp_hba_dbf_event_fsf_unsol("dism", adapter
, sr_buf
);
282 mempool_free(sr_buf
, adapter
->pool
.data_status_read
);
283 zfcp_fsf_req_free(req
);
287 zfcp_hba_dbf_event_fsf_unsol("read", adapter
, sr_buf
);
289 switch (sr_buf
->status_type
) {
290 case FSF_STATUS_READ_PORT_CLOSED
:
291 zfcp_fsf_status_read_port_closed(req
);
293 case FSF_STATUS_READ_INCOMING_ELS
:
294 zfcp_fc_incoming_els(req
);
296 case FSF_STATUS_READ_SENSE_DATA_AVAIL
:
298 case FSF_STATUS_READ_BIT_ERROR_THRESHOLD
:
299 dev_warn(&adapter
->ccw_device
->dev
,
300 "The error threshold for checksum statistics "
301 "has been exceeded\n");
302 zfcp_hba_dbf_event_berr(adapter
, req
);
304 case FSF_STATUS_READ_LINK_DOWN
:
305 zfcp_fsf_status_read_link_down(req
);
307 case FSF_STATUS_READ_LINK_UP
:
308 dev_info(&adapter
->ccw_device
->dev
,
309 "The local link has been restored\n");
310 /* All ports should be marked as ready to run again */
311 zfcp_erp_modify_adapter_status(adapter
, "fssrh_1", NULL
,
312 ZFCP_STATUS_COMMON_RUNNING
,
314 zfcp_erp_adapter_reopen(adapter
,
315 ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED
|
316 ZFCP_STATUS_COMMON_ERP_FAILED
,
319 case FSF_STATUS_READ_NOTIFICATION_LOST
:
320 if (sr_buf
->status_subtype
& FSF_STATUS_READ_SUB_ACT_UPDATED
)
321 zfcp_erp_adapter_access_changed(adapter
, "fssrh_3",
323 if (sr_buf
->status_subtype
& FSF_STATUS_READ_SUB_INCOMING_ELS
)
324 schedule_work(&adapter
->scan_work
);
326 case FSF_STATUS_READ_CFDC_UPDATED
:
327 zfcp_erp_adapter_access_changed(adapter
, "fssrh_4", req
);
329 case FSF_STATUS_READ_FEATURE_UPDATE_ALERT
:
330 adapter
->adapter_features
= sr_buf
->payload
.word
[0];
334 mempool_free(sr_buf
, adapter
->pool
.data_status_read
);
335 zfcp_fsf_req_free(req
);
337 atomic_inc(&adapter
->stat_miss
);
338 queue_work(zfcp_data
.work_queue
, &adapter
->stat_work
);
341 static void zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req
*req
)
343 switch (req
->qtcb
->header
.fsf_status_qual
.word
[0]) {
344 case FSF_SQ_FCP_RSP_AVAILABLE
:
345 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE
:
346 case FSF_SQ_NO_RETRY_POSSIBLE
:
347 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED
:
349 case FSF_SQ_COMMAND_ABORTED
:
350 req
->status
|= ZFCP_STATUS_FSFREQ_ABORTED
;
352 case FSF_SQ_NO_RECOM
:
353 dev_err(&req
->adapter
->ccw_device
->dev
,
354 "The FCP adapter reported a problem "
355 "that cannot be recovered\n");
356 zfcp_erp_adapter_shutdown(req
->adapter
, 0, "fsfsqe1", req
);
359 /* all non-return stats set FSFREQ_ERROR*/
360 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
363 static void zfcp_fsf_fsfstatus_eval(struct zfcp_fsf_req
*req
)
365 if (unlikely(req
->status
& ZFCP_STATUS_FSFREQ_ERROR
))
368 switch (req
->qtcb
->header
.fsf_status
) {
369 case FSF_UNKNOWN_COMMAND
:
370 dev_err(&req
->adapter
->ccw_device
->dev
,
371 "The FCP adapter does not recognize the command 0x%x\n",
372 req
->qtcb
->header
.fsf_command
);
373 zfcp_erp_adapter_shutdown(req
->adapter
, 0, "fsfse_1", req
);
374 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
376 case FSF_ADAPTER_STATUS_AVAILABLE
:
377 zfcp_fsf_fsfstatus_qual_eval(req
);
382 static void zfcp_fsf_protstatus_eval(struct zfcp_fsf_req
*req
)
384 struct zfcp_adapter
*adapter
= req
->adapter
;
385 struct fsf_qtcb
*qtcb
= req
->qtcb
;
386 union fsf_prot_status_qual
*psq
= &qtcb
->prefix
.prot_status_qual
;
388 zfcp_hba_dbf_event_fsf_response(req
);
390 if (req
->status
& ZFCP_STATUS_FSFREQ_DISMISSED
) {
391 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
|
392 ZFCP_STATUS_FSFREQ_RETRY
; /* only for SCSI cmnds. */
396 switch (qtcb
->prefix
.prot_status
) {
398 case FSF_PROT_FSF_STATUS_PRESENTED
:
400 case FSF_PROT_QTCB_VERSION_ERROR
:
401 dev_err(&adapter
->ccw_device
->dev
,
402 "QTCB version 0x%x not supported by FCP adapter "
403 "(0x%x to 0x%x)\n", FSF_QTCB_CURRENT_VERSION
,
404 psq
->word
[0], psq
->word
[1]);
405 zfcp_erp_adapter_shutdown(adapter
, 0, "fspse_1", req
);
407 case FSF_PROT_ERROR_STATE
:
408 case FSF_PROT_SEQ_NUMB_ERROR
:
409 zfcp_erp_adapter_reopen(adapter
, 0, "fspse_2", req
);
410 req
->status
|= ZFCP_STATUS_FSFREQ_RETRY
;
412 case FSF_PROT_UNSUPP_QTCB_TYPE
:
413 dev_err(&adapter
->ccw_device
->dev
,
414 "The QTCB type is not supported by the FCP adapter\n");
415 zfcp_erp_adapter_shutdown(adapter
, 0, "fspse_3", req
);
417 case FSF_PROT_HOST_CONNECTION_INITIALIZING
:
418 atomic_set_mask(ZFCP_STATUS_ADAPTER_HOST_CON_INIT
,
421 case FSF_PROT_DUPLICATE_REQUEST_ID
:
422 dev_err(&adapter
->ccw_device
->dev
,
423 "0x%Lx is an ambiguous request identifier\n",
424 (unsigned long long)qtcb
->bottom
.support
.req_handle
);
425 zfcp_erp_adapter_shutdown(adapter
, 0, "fspse_4", req
);
427 case FSF_PROT_LINK_DOWN
:
428 zfcp_fsf_link_down_info_eval(req
, "fspse_5",
429 &psq
->link_down_info
);
430 /* FIXME: reopening adapter now? better wait for link up */
431 zfcp_erp_adapter_reopen(adapter
, 0, "fspse_6", req
);
433 case FSF_PROT_REEST_QUEUE
:
434 /* All ports should be marked as ready to run again */
435 zfcp_erp_modify_adapter_status(adapter
, "fspse_7", NULL
,
436 ZFCP_STATUS_COMMON_RUNNING
,
438 zfcp_erp_adapter_reopen(adapter
,
439 ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED
|
440 ZFCP_STATUS_COMMON_ERP_FAILED
,
444 dev_err(&adapter
->ccw_device
->dev
,
445 "0x%x is not a valid transfer protocol status\n",
446 qtcb
->prefix
.prot_status
);
447 zfcp_erp_adapter_shutdown(adapter
, 0, "fspse_9", req
);
449 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
453 * zfcp_fsf_req_complete - process completion of a FSF request
454 * @fsf_req: The FSF request that has been completed.
456 * When a request has been completed either from the FCP adapter,
457 * or it has been dismissed due to a queue shutdown, this function
458 * is called to process the completion status and trigger further
459 * events related to the FSF request.
461 void zfcp_fsf_req_complete(struct zfcp_fsf_req
*req
)
463 if (unlikely(req
->fsf_command
== FSF_QTCB_UNSOLICITED_STATUS
)) {
464 zfcp_fsf_status_read_handler(req
);
468 del_timer(&req
->timer
);
469 zfcp_fsf_protstatus_eval(req
);
470 zfcp_fsf_fsfstatus_eval(req
);
474 zfcp_erp_notify(req
->erp_action
, 0);
475 req
->status
|= ZFCP_STATUS_FSFREQ_COMPLETED
;
477 if (likely(req
->status
& ZFCP_STATUS_FSFREQ_CLEANUP
))
478 zfcp_fsf_req_free(req
);
480 /* notify initiator waiting for the requests completion */
482 * FIXME: Race! We must not access fsf_req here as it might have been
483 * cleaned up already due to the set ZFCP_STATUS_FSFREQ_COMPLETED
484 * flag. It's an improbable case. But, we have the same paranoia for
485 * the cleanup flag already.
486 * Might better be handled using complete()?
487 * (setting the flag and doing wakeup ought to be atomic
488 * with regard to checking the flag as long as waitqueue is
489 * part of the to be released structure)
491 wake_up(&req
->completion_wq
);
494 static int zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req
*req
)
496 struct fsf_qtcb_bottom_config
*bottom
;
497 struct zfcp_adapter
*adapter
= req
->adapter
;
498 struct Scsi_Host
*shost
= adapter
->scsi_host
;
500 bottom
= &req
->qtcb
->bottom
.config
;
503 memcpy(req
->data
, bottom
, sizeof(*bottom
));
505 fc_host_node_name(shost
) = bottom
->nport_serv_param
.wwnn
;
506 fc_host_port_name(shost
) = bottom
->nport_serv_param
.wwpn
;
507 fc_host_port_id(shost
) = bottom
->s_id
& ZFCP_DID_MASK
;
508 fc_host_speed(shost
) = bottom
->fc_link_speed
;
509 fc_host_supported_classes(shost
) = FC_COS_CLASS2
| FC_COS_CLASS3
;
511 adapter
->hydra_version
= bottom
->adapter_type
;
512 adapter
->timer_ticks
= bottom
->timer_interval
;
514 if (fc_host_permanent_port_name(shost
) == -1)
515 fc_host_permanent_port_name(shost
) = fc_host_port_name(shost
);
517 switch (bottom
->fc_topology
) {
519 adapter
->peer_d_id
= bottom
->peer_d_id
& ZFCP_DID_MASK
;
520 adapter
->peer_wwpn
= bottom
->plogi_payload
.wwpn
;
521 adapter
->peer_wwnn
= bottom
->plogi_payload
.wwnn
;
522 fc_host_port_type(shost
) = FC_PORTTYPE_PTP
;
524 case FSF_TOPO_FABRIC
:
525 fc_host_port_type(shost
) = FC_PORTTYPE_NPORT
;
528 fc_host_port_type(shost
) = FC_PORTTYPE_NLPORT
;
531 dev_err(&adapter
->ccw_device
->dev
,
532 "Unknown or unsupported arbitrated loop "
533 "fibre channel topology detected\n");
534 zfcp_erp_adapter_shutdown(adapter
, 0, "fsece_1", req
);
541 static void zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req
*req
)
543 struct zfcp_adapter
*adapter
= req
->adapter
;
544 struct fsf_qtcb
*qtcb
= req
->qtcb
;
545 struct fsf_qtcb_bottom_config
*bottom
= &qtcb
->bottom
.config
;
546 struct Scsi_Host
*shost
= adapter
->scsi_host
;
548 if (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)
551 adapter
->fsf_lic_version
= bottom
->lic_version
;
552 adapter
->adapter_features
= bottom
->adapter_features
;
553 adapter
->connection_features
= bottom
->connection_features
;
554 adapter
->peer_wwpn
= 0;
555 adapter
->peer_wwnn
= 0;
556 adapter
->peer_d_id
= 0;
558 switch (qtcb
->header
.fsf_status
) {
560 if (zfcp_fsf_exchange_config_evaluate(req
))
563 if (bottom
->max_qtcb_size
< sizeof(struct fsf_qtcb
)) {
564 dev_err(&adapter
->ccw_device
->dev
,
565 "FCP adapter maximum QTCB size (%d bytes) "
567 bottom
->max_qtcb_size
);
568 zfcp_erp_adapter_shutdown(adapter
, 0, "fsecdh1", req
);
571 atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK
,
574 case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE
:
575 fc_host_node_name(shost
) = 0;
576 fc_host_port_name(shost
) = 0;
577 fc_host_port_id(shost
) = 0;
578 fc_host_speed(shost
) = FC_PORTSPEED_UNKNOWN
;
579 fc_host_port_type(shost
) = FC_PORTTYPE_UNKNOWN
;
580 adapter
->hydra_version
= 0;
582 atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK
,
585 zfcp_fsf_link_down_info_eval(req
, "fsecdh2",
586 &qtcb
->header
.fsf_status_qual
.link_down_info
);
589 zfcp_erp_adapter_shutdown(adapter
, 0, "fsecdh3", req
);
593 if (adapter
->adapter_features
& FSF_FEATURE_HBAAPI_MANAGEMENT
) {
594 adapter
->hardware_version
= bottom
->hardware_version
;
595 memcpy(fc_host_serial_number(shost
), bottom
->serial_number
,
596 min(FC_SERIAL_NUMBER_SIZE
, 17));
597 EBCASC(fc_host_serial_number(shost
),
598 min(FC_SERIAL_NUMBER_SIZE
, 17));
601 if (FSF_QTCB_CURRENT_VERSION
< bottom
->low_qtcb_version
) {
602 dev_err(&adapter
->ccw_device
->dev
,
603 "The FCP adapter only supports newer "
604 "control block versions\n");
605 zfcp_erp_adapter_shutdown(adapter
, 0, "fsecdh4", req
);
608 if (FSF_QTCB_CURRENT_VERSION
> bottom
->high_qtcb_version
) {
609 dev_err(&adapter
->ccw_device
->dev
,
610 "The FCP adapter only supports older "
611 "control block versions\n");
612 zfcp_erp_adapter_shutdown(adapter
, 0, "fsecdh5", req
);
616 static void zfcp_fsf_exchange_port_evaluate(struct zfcp_fsf_req
*req
)
618 struct zfcp_adapter
*adapter
= req
->adapter
;
619 struct fsf_qtcb_bottom_port
*bottom
= &req
->qtcb
->bottom
.port
;
620 struct Scsi_Host
*shost
= adapter
->scsi_host
;
623 memcpy(req
->data
, bottom
, sizeof(*bottom
));
625 if (adapter
->connection_features
& FSF_FEATURE_NPIV_MODE
) {
626 fc_host_permanent_port_name(shost
) = bottom
->wwpn
;
627 fc_host_port_type(shost
) = FC_PORTTYPE_NPIV
;
629 fc_host_permanent_port_name(shost
) = fc_host_port_name(shost
);
630 fc_host_maxframe_size(shost
) = bottom
->maximum_frame_size
;
631 fc_host_supported_speeds(shost
) = bottom
->supported_speed
;
634 static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req
*req
)
636 struct fsf_qtcb
*qtcb
= req
->qtcb
;
638 if (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)
641 switch (qtcb
->header
.fsf_status
) {
643 zfcp_fsf_exchange_port_evaluate(req
);
645 case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE
:
646 zfcp_fsf_exchange_port_evaluate(req
);
647 zfcp_fsf_link_down_info_eval(req
, "fsepdh1",
648 &qtcb
->header
.fsf_status_qual
.link_down_info
);
653 static int zfcp_fsf_sbal_check(struct zfcp_adapter
*adapter
)
655 struct zfcp_qdio_queue
*req_q
= &adapter
->req_q
;
657 spin_lock_bh(&adapter
->req_q_lock
);
658 if (atomic_read(&req_q
->count
))
660 spin_unlock_bh(&adapter
->req_q_lock
);
664 static int zfcp_fsf_req_sbal_get(struct zfcp_adapter
*adapter
)
668 spin_unlock_bh(&adapter
->req_q_lock
);
669 ret
= wait_event_interruptible_timeout(adapter
->request_wq
,
670 zfcp_fsf_sbal_check(adapter
), 5 * HZ
);
674 atomic_inc(&adapter
->qdio_outb_full
);
676 spin_lock_bh(&adapter
->req_q_lock
);
680 static struct zfcp_fsf_req
*zfcp_fsf_alloc_noqtcb(mempool_t
*pool
)
682 struct zfcp_fsf_req
*req
;
683 req
= mempool_alloc(pool
, GFP_ATOMIC
);
686 memset(req
, 0, sizeof(*req
));
691 static struct zfcp_fsf_req
*zfcp_fsf_alloc_qtcb(mempool_t
*pool
)
693 struct zfcp_fsf_req_qtcb
*qtcb
;
696 qtcb
= mempool_alloc(pool
, GFP_ATOMIC
);
698 qtcb
= kmem_cache_alloc(zfcp_data
.fsf_req_qtcb_cache
,
703 memset(qtcb
, 0, sizeof(*qtcb
));
704 qtcb
->fsf_req
.qtcb
= &qtcb
->qtcb
;
705 qtcb
->fsf_req
.pool
= pool
;
707 return &qtcb
->fsf_req
;
710 static struct zfcp_fsf_req
*zfcp_fsf_req_create(struct zfcp_adapter
*adapter
,
711 u32 fsf_cmd
, int req_flags
,
714 struct qdio_buffer_element
*sbale
;
716 struct zfcp_fsf_req
*req
;
717 struct zfcp_qdio_queue
*req_q
= &adapter
->req_q
;
719 if (req_flags
& ZFCP_REQ_NO_QTCB
)
720 req
= zfcp_fsf_alloc_noqtcb(pool
);
722 req
= zfcp_fsf_alloc_qtcb(pool
);
725 return ERR_PTR(-EIO
);
727 if (adapter
->req_no
== 0)
730 INIT_LIST_HEAD(&req
->list
);
731 init_timer(&req
->timer
);
732 init_waitqueue_head(&req
->completion_wq
);
734 req
->adapter
= adapter
;
735 req
->fsf_command
= fsf_cmd
;
736 req
->req_id
= adapter
->req_no
;
737 req
->sbal_number
= 1;
738 req
->sbal_first
= req_q
->first
;
739 req
->sbal_last
= req_q
->first
;
742 sbale
= zfcp_qdio_sbale_req(req
);
743 sbale
[0].addr
= (void *) req
->req_id
;
744 sbale
[0].flags
|= SBAL_FLAGS0_COMMAND
;
746 if (likely(req
->qtcb
)) {
747 req
->qtcb
->prefix
.req_seq_no
= req
->adapter
->fsf_req_seq_no
;
748 req
->qtcb
->prefix
.req_id
= req
->req_id
;
749 req
->qtcb
->prefix
.ulp_info
= 26;
750 req
->qtcb
->prefix
.qtcb_type
= fsf_qtcb_type
[req
->fsf_command
];
751 req
->qtcb
->prefix
.qtcb_version
= FSF_QTCB_CURRENT_VERSION
;
752 req
->qtcb
->header
.req_handle
= req
->req_id
;
753 req
->qtcb
->header
.fsf_command
= req
->fsf_command
;
754 req
->seq_no
= adapter
->fsf_req_seq_no
;
755 req
->qtcb
->prefix
.req_seq_no
= adapter
->fsf_req_seq_no
;
756 sbale
[1].addr
= (void *) req
->qtcb
;
757 sbale
[1].length
= sizeof(struct fsf_qtcb
);
760 if (!(atomic_read(&adapter
->status
) & ZFCP_STATUS_ADAPTER_QDIOUP
)) {
761 zfcp_fsf_req_free(req
);
762 return ERR_PTR(-EIO
);
765 if (likely(req_flags
& ZFCP_REQ_AUTO_CLEANUP
))
766 req
->status
|= ZFCP_STATUS_FSFREQ_CLEANUP
;
771 static int zfcp_fsf_req_send(struct zfcp_fsf_req
*req
)
773 struct zfcp_adapter
*adapter
= req
->adapter
;
776 int with_qtcb
= (req
->qtcb
!= NULL
);
778 /* put allocated FSF request into hash table */
779 spin_lock_irqsave(&adapter
->req_list_lock
, flags
);
780 idx
= zfcp_reqlist_hash(req
->req_id
);
781 list_add_tail(&req
->list
, &adapter
->req_list
[idx
]);
782 spin_unlock_irqrestore(&adapter
->req_list_lock
, flags
);
784 req
->qdio_outb_usage
= atomic_read(&adapter
->req_q
.count
);
785 req
->issued
= get_clock();
786 if (zfcp_qdio_send(req
)) {
787 del_timer(&req
->timer
);
788 spin_lock_irqsave(&adapter
->req_list_lock
, flags
);
789 /* lookup request again, list might have changed */
790 if (zfcp_reqlist_find_safe(adapter
, req
))
791 zfcp_reqlist_remove(adapter
, req
);
792 spin_unlock_irqrestore(&adapter
->req_list_lock
, flags
);
793 zfcp_erp_adapter_reopen(adapter
, 0, "fsrs__1", req
);
797 /* Don't increase for unsolicited status */
799 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,
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, "fsafch2", 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
, "fsafch3", req
);
889 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
|
890 ZFCP_STATUS_FSFREQ_RETRY
;
893 zfcp_erp_unit_boxed(unit
, "fsafch4", 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
);
902 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED
:
903 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
908 req
->status
|= ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED
;
914 * zfcp_fsf_abort_fcp_command - abort running SCSI command
915 * @old_req_id: unsigned long
916 * @unit: pointer to struct zfcp_unit
917 * Returns: pointer to struct zfcp_fsf_req
920 struct zfcp_fsf_req
*zfcp_fsf_abort_fcp_command(unsigned long old_req_id
,
921 struct zfcp_unit
*unit
)
923 struct qdio_buffer_element
*sbale
;
924 struct zfcp_fsf_req
*req
= NULL
;
925 struct zfcp_adapter
*adapter
= unit
->port
->adapter
;
927 spin_lock_bh(&adapter
->req_q_lock
);
928 if (zfcp_fsf_req_sbal_get(adapter
))
930 req
= zfcp_fsf_req_create(adapter
, FSF_QTCB_ABORT_FCP_CMND
,
931 0, adapter
->pool
.fsf_req_abort
);
937 if (unlikely(!(atomic_read(&unit
->status
) &
938 ZFCP_STATUS_COMMON_UNBLOCKED
)))
941 sbale
= zfcp_qdio_sbale_req(req
);
942 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_READ
;
943 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
946 req
->handler
= zfcp_fsf_abort_fcp_command_handler
;
947 req
->qtcb
->header
.lun_handle
= unit
->handle
;
948 req
->qtcb
->header
.port_handle
= unit
->port
->handle
;
949 req
->qtcb
->bottom
.support
.req_handle
= (u64
) old_req_id
;
951 zfcp_fsf_start_timer(req
, ZFCP_SCSI_ER_TIMEOUT
);
952 if (!zfcp_fsf_req_send(req
))
956 zfcp_fsf_req_free(req
);
959 spin_unlock_bh(&adapter
->req_q_lock
);
963 static void zfcp_fsf_send_ct_handler(struct zfcp_fsf_req
*req
)
965 struct zfcp_adapter
*adapter
= req
->adapter
;
966 struct zfcp_send_ct
*send_ct
= req
->data
;
967 struct fsf_qtcb_header
*header
= &req
->qtcb
->header
;
969 send_ct
->status
= -EINVAL
;
971 if (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)
974 switch (header
->fsf_status
) {
976 zfcp_san_dbf_event_ct_response(req
);
979 case FSF_SERVICE_CLASS_NOT_SUPPORTED
:
980 zfcp_fsf_class_not_supp(req
);
982 case FSF_ADAPTER_STATUS_AVAILABLE
:
983 switch (header
->fsf_status_qual
.word
[0]){
984 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE
:
985 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED
:
986 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
990 case FSF_ACCESS_DENIED
:
993 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
|
994 ZFCP_STATUS_FSFREQ_RETRY
;
996 case FSF_PORT_HANDLE_NOT_VALID
:
997 zfcp_erp_adapter_reopen(adapter
, 0, "fsscth1", req
);
999 case FSF_GENERIC_COMMAND_REJECTED
:
1000 case FSF_PAYLOAD_SIZE_MISMATCH
:
1001 case FSF_REQUEST_SIZE_TOO_LARGE
:
1002 case FSF_RESPONSE_SIZE_TOO_LARGE
:
1003 case FSF_SBAL_MISMATCH
:
1004 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1009 if (send_ct
->handler
)
1010 send_ct
->handler(send_ct
->handler_data
);
1013 static int zfcp_fsf_setup_ct_els_sbals(struct zfcp_fsf_req
*req
,
1014 struct scatterlist
*sg_req
,
1015 struct scatterlist
*sg_resp
,
1018 struct qdio_buffer_element
*sbale
= zfcp_qdio_sbale_req(req
);
1019 u32 feat
= req
->adapter
->adapter_features
;
1022 if (!(feat
& FSF_FEATURE_ELS_CT_CHAINED_SBALS
)) {
1023 if (sg_req
->length
> PAGE_SIZE
|| sg_resp
->length
> PAGE_SIZE
||
1024 !sg_is_last(sg_req
) || !sg_is_last(sg_resp
))
1027 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_WRITE_READ
;
1028 sbale
[2].addr
= sg_virt(sg_req
);
1029 sbale
[2].length
= sg_req
->length
;
1030 sbale
[3].addr
= sg_virt(sg_resp
);
1031 sbale
[3].length
= sg_resp
->length
;
1032 sbale
[3].flags
|= SBAL_FLAGS_LAST_ENTRY
;
1036 bytes
= zfcp_qdio_sbals_from_sg(req
, SBAL_FLAGS0_TYPE_WRITE_READ
,
1040 req
->qtcb
->bottom
.support
.req_buf_length
= bytes
;
1041 req
->sbale_curr
= ZFCP_LAST_SBALE_PER_SBAL
;
1043 bytes
= zfcp_qdio_sbals_from_sg(req
, SBAL_FLAGS0_TYPE_WRITE_READ
,
1044 sg_resp
, max_sbals
);
1047 req
->qtcb
->bottom
.support
.resp_buf_length
= bytes
;
1053 * zfcp_fsf_send_ct - initiate a Generic Service request (FC-GS)
1054 * @ct: pointer to struct zfcp_send_ct with data for request
1055 * @pool: if non-null this mempool is used to allocate struct zfcp_fsf_req
1056 * @erp_action: if non-null the Generic Service request sent within ERP
1058 int zfcp_fsf_send_ct(struct zfcp_send_ct
*ct
, mempool_t
*pool
,
1059 struct zfcp_erp_action
*erp_action
)
1061 struct zfcp_wka_port
*wka_port
= ct
->wka_port
;
1062 struct zfcp_adapter
*adapter
= wka_port
->adapter
;
1063 struct zfcp_fsf_req
*req
;
1066 spin_lock_bh(&adapter
->req_q_lock
);
1067 if (zfcp_fsf_req_sbal_get(adapter
))
1070 req
= zfcp_fsf_req_create(adapter
, FSF_QTCB_SEND_GENERIC
,
1071 ZFCP_REQ_AUTO_CLEANUP
, pool
);
1077 ret
= zfcp_fsf_setup_ct_els_sbals(req
, ct
->req
, ct
->resp
,
1078 FSF_MAX_SBALS_PER_REQ
);
1082 req
->handler
= zfcp_fsf_send_ct_handler
;
1083 req
->qtcb
->header
.port_handle
= wka_port
->handle
;
1084 req
->qtcb
->bottom
.support
.service_class
= FSF_CLASS_3
;
1085 req
->qtcb
->bottom
.support
.timeout
= ct
->timeout
;
1088 zfcp_san_dbf_event_ct_request(req
);
1091 erp_action
->fsf_req
= req
;
1092 req
->erp_action
= erp_action
;
1093 zfcp_fsf_start_erp_timer(req
);
1095 zfcp_fsf_start_timer(req
, ZFCP_FSF_REQUEST_TIMEOUT
);
1097 ret
= zfcp_fsf_req_send(req
);
1104 zfcp_fsf_req_free(req
);
1106 erp_action
->fsf_req
= NULL
;
1108 spin_unlock_bh(&adapter
->req_q_lock
);
1112 static void zfcp_fsf_send_els_handler(struct zfcp_fsf_req
*req
)
1114 struct zfcp_send_els
*send_els
= req
->data
;
1115 struct zfcp_port
*port
= send_els
->port
;
1116 struct fsf_qtcb_header
*header
= &req
->qtcb
->header
;
1118 send_els
->status
= -EINVAL
;
1120 if (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)
1121 goto skip_fsfstatus
;
1123 switch (header
->fsf_status
) {
1125 zfcp_san_dbf_event_els_response(req
);
1126 send_els
->status
= 0;
1128 case FSF_SERVICE_CLASS_NOT_SUPPORTED
:
1129 zfcp_fsf_class_not_supp(req
);
1131 case FSF_ADAPTER_STATUS_AVAILABLE
:
1132 switch (header
->fsf_status_qual
.word
[0]){
1133 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE
:
1134 if (port
&& (send_els
->ls_code
!= ZFCP_LS_ADISC
))
1135 zfcp_test_link(port
);
1137 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED
:
1138 case FSF_SQ_RETRY_IF_POSSIBLE
:
1139 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1143 case FSF_ELS_COMMAND_REJECTED
:
1144 case FSF_PAYLOAD_SIZE_MISMATCH
:
1145 case FSF_REQUEST_SIZE_TOO_LARGE
:
1146 case FSF_RESPONSE_SIZE_TOO_LARGE
:
1148 case FSF_ACCESS_DENIED
:
1149 zfcp_fsf_access_denied_port(req
, port
);
1151 case FSF_SBAL_MISMATCH
:
1152 /* should never occure, avoided in zfcp_fsf_send_els */
1155 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1159 if (send_els
->handler
)
1160 send_els
->handler(send_els
->handler_data
);
1164 * zfcp_fsf_send_els - initiate an ELS command (FC-FS)
1165 * @els: pointer to struct zfcp_send_els with data for the command
1167 int zfcp_fsf_send_els(struct zfcp_send_els
*els
)
1169 struct zfcp_fsf_req
*req
;
1170 struct zfcp_adapter
*adapter
= els
->adapter
;
1171 struct fsf_qtcb_bottom_support
*bottom
;
1174 spin_lock_bh(&adapter
->req_q_lock
);
1175 if (zfcp_fsf_req_sbal_get(adapter
))
1177 req
= zfcp_fsf_req_create(adapter
, FSF_QTCB_SEND_ELS
,
1178 ZFCP_REQ_AUTO_CLEANUP
, NULL
);
1184 ret
= zfcp_fsf_setup_ct_els_sbals(req
, els
->req
, els
->resp
, 2);
1189 bottom
= &req
->qtcb
->bottom
.support
;
1190 req
->handler
= zfcp_fsf_send_els_handler
;
1191 bottom
->d_id
= els
->d_id
;
1192 bottom
->service_class
= FSF_CLASS_3
;
1193 bottom
->timeout
= 2 * R_A_TOV
;
1196 zfcp_san_dbf_event_els_request(req
);
1198 zfcp_fsf_start_timer(req
, ZFCP_FSF_REQUEST_TIMEOUT
);
1199 ret
= zfcp_fsf_req_send(req
);
1206 zfcp_fsf_req_free(req
);
1208 spin_unlock_bh(&adapter
->req_q_lock
);
1212 int zfcp_fsf_exchange_config_data(struct zfcp_erp_action
*erp_action
)
1214 struct qdio_buffer_element
*sbale
;
1215 struct zfcp_fsf_req
*req
;
1216 struct zfcp_adapter
*adapter
= erp_action
->adapter
;
1219 spin_lock_bh(&adapter
->req_q_lock
);
1220 if (zfcp_fsf_req_sbal_get(adapter
))
1222 req
= zfcp_fsf_req_create(adapter
,
1223 FSF_QTCB_EXCHANGE_CONFIG_DATA
,
1224 ZFCP_REQ_AUTO_CLEANUP
,
1225 adapter
->pool
.fsf_req_erp
);
1227 retval
= PTR_ERR(req
);
1231 sbale
= zfcp_qdio_sbale_req(req
);
1232 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_READ
;
1233 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
1235 req
->qtcb
->bottom
.config
.feature_selection
=
1237 FSF_FEATURE_LUN_SHARING
|
1238 FSF_FEATURE_NOTIFICATION_LOST
|
1239 FSF_FEATURE_UPDATE_ALERT
;
1240 req
->erp_action
= erp_action
;
1241 req
->handler
= zfcp_fsf_exchange_config_data_handler
;
1242 erp_action
->fsf_req
= req
;
1244 zfcp_fsf_start_erp_timer(req
);
1245 retval
= zfcp_fsf_req_send(req
);
1247 zfcp_fsf_req_free(req
);
1248 erp_action
->fsf_req
= NULL
;
1251 spin_unlock_bh(&adapter
->req_q_lock
);
1255 int zfcp_fsf_exchange_config_data_sync(struct zfcp_adapter
*adapter
,
1256 struct fsf_qtcb_bottom_config
*data
)
1258 struct qdio_buffer_element
*sbale
;
1259 struct zfcp_fsf_req
*req
= NULL
;
1262 spin_lock_bh(&adapter
->req_q_lock
);
1263 if (zfcp_fsf_req_sbal_get(adapter
))
1266 req
= zfcp_fsf_req_create(adapter
, FSF_QTCB_EXCHANGE_CONFIG_DATA
,
1269 retval
= PTR_ERR(req
);
1273 sbale
= zfcp_qdio_sbale_req(req
);
1274 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_READ
;
1275 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
1276 req
->handler
= zfcp_fsf_exchange_config_data_handler
;
1278 req
->qtcb
->bottom
.config
.feature_selection
=
1280 FSF_FEATURE_LUN_SHARING
|
1281 FSF_FEATURE_NOTIFICATION_LOST
|
1282 FSF_FEATURE_UPDATE_ALERT
;
1287 zfcp_fsf_start_timer(req
, ZFCP_FSF_REQUEST_TIMEOUT
);
1288 retval
= zfcp_fsf_req_send(req
);
1289 spin_unlock_bh(&adapter
->req_q_lock
);
1291 wait_event(req
->completion_wq
,
1292 req
->status
& ZFCP_STATUS_FSFREQ_COMPLETED
);
1294 zfcp_fsf_req_free(req
);
1298 spin_unlock_bh(&adapter
->req_q_lock
);
1303 * zfcp_fsf_exchange_port_data - request information about local port
1304 * @erp_action: ERP action for the adapter for which port data is requested
1305 * Returns: 0 on success, error otherwise
1307 int zfcp_fsf_exchange_port_data(struct zfcp_erp_action
*erp_action
)
1309 struct qdio_buffer_element
*sbale
;
1310 struct zfcp_fsf_req
*req
;
1311 struct zfcp_adapter
*adapter
= erp_action
->adapter
;
1314 if (!(adapter
->adapter_features
& FSF_FEATURE_HBAAPI_MANAGEMENT
))
1317 spin_lock_bh(&adapter
->req_q_lock
);
1318 if (zfcp_fsf_req_sbal_get(adapter
))
1320 req
= zfcp_fsf_req_create(adapter
, FSF_QTCB_EXCHANGE_PORT_DATA
,
1321 ZFCP_REQ_AUTO_CLEANUP
,
1322 adapter
->pool
.fsf_req_erp
);
1324 retval
= PTR_ERR(req
);
1328 sbale
= zfcp_qdio_sbale_req(req
);
1329 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_READ
;
1330 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
1332 req
->handler
= zfcp_fsf_exchange_port_data_handler
;
1333 req
->erp_action
= erp_action
;
1334 erp_action
->fsf_req
= req
;
1336 zfcp_fsf_start_erp_timer(req
);
1337 retval
= zfcp_fsf_req_send(req
);
1339 zfcp_fsf_req_free(req
);
1340 erp_action
->fsf_req
= NULL
;
1343 spin_unlock_bh(&adapter
->req_q_lock
);
1348 * zfcp_fsf_exchange_port_data_sync - request information about local port
1349 * @adapter: pointer to struct zfcp_adapter
1350 * @data: pointer to struct fsf_qtcb_bottom_port
1351 * Returns: 0 on success, error otherwise
1353 int zfcp_fsf_exchange_port_data_sync(struct zfcp_adapter
*adapter
,
1354 struct fsf_qtcb_bottom_port
*data
)
1356 struct qdio_buffer_element
*sbale
;
1357 struct zfcp_fsf_req
*req
= NULL
;
1360 if (!(adapter
->adapter_features
& FSF_FEATURE_HBAAPI_MANAGEMENT
))
1363 spin_lock_bh(&adapter
->req_q_lock
);
1364 if (zfcp_fsf_req_sbal_get(adapter
))
1367 req
= zfcp_fsf_req_create(adapter
, FSF_QTCB_EXCHANGE_PORT_DATA
, 0,
1370 retval
= PTR_ERR(req
);
1377 sbale
= zfcp_qdio_sbale_req(req
);
1378 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_READ
;
1379 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
1381 req
->handler
= zfcp_fsf_exchange_port_data_handler
;
1382 zfcp_fsf_start_timer(req
, ZFCP_FSF_REQUEST_TIMEOUT
);
1383 retval
= zfcp_fsf_req_send(req
);
1384 spin_unlock_bh(&adapter
->req_q_lock
);
1387 wait_event(req
->completion_wq
,
1388 req
->status
& ZFCP_STATUS_FSFREQ_COMPLETED
);
1389 zfcp_fsf_req_free(req
);
1394 spin_unlock_bh(&adapter
->req_q_lock
);
1398 static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req
*req
)
1400 struct zfcp_port
*port
= req
->data
;
1401 struct fsf_qtcb_header
*header
= &req
->qtcb
->header
;
1402 struct fsf_plogi
*plogi
;
1404 if (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)
1407 switch (header
->fsf_status
) {
1408 case FSF_PORT_ALREADY_OPEN
:
1410 case FSF_ACCESS_DENIED
:
1411 zfcp_fsf_access_denied_port(req
, port
);
1413 case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED
:
1414 dev_warn(&req
->adapter
->ccw_device
->dev
,
1415 "Not enough FCP adapter resources to open "
1416 "remote port 0x%016Lx\n",
1417 (unsigned long long)port
->wwpn
);
1418 zfcp_erp_port_failed(port
, "fsoph_1", req
);
1419 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1421 case FSF_ADAPTER_STATUS_AVAILABLE
:
1422 switch (header
->fsf_status_qual
.word
[0]) {
1423 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE
:
1424 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED
:
1425 case FSF_SQ_NO_RETRY_POSSIBLE
:
1426 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1431 port
->handle
= header
->port_handle
;
1432 atomic_set_mask(ZFCP_STATUS_COMMON_OPEN
|
1433 ZFCP_STATUS_PORT_PHYS_OPEN
, &port
->status
);
1434 atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED
|
1435 ZFCP_STATUS_COMMON_ACCESS_BOXED
,
1437 /* check whether D_ID has changed during open */
1439 * FIXME: This check is not airtight, as the FCP channel does
1440 * not monitor closures of target port connections caused on
1441 * the remote side. Thus, they might miss out on invalidating
1442 * locally cached WWPNs (and other N_Port parameters) of gone
1443 * target ports. So, our heroic attempt to make things safe
1444 * could be undermined by 'open port' response data tagged with
1445 * obsolete WWPNs. Another reason to monitor potential
1446 * connection closures ourself at least (by interpreting
1447 * incoming ELS' and unsolicited status). It just crosses my
1448 * mind that one should be able to cross-check by means of
1449 * another GID_PN straight after a port has been opened.
1450 * Alternately, an ADISC/PDISC ELS should suffice, as well.
1452 plogi
= (struct fsf_plogi
*) req
->qtcb
->bottom
.support
.els
;
1453 if (req
->qtcb
->bottom
.support
.els1_length
>=
1454 FSF_PLOGI_MIN_LEN
) {
1455 if (plogi
->serv_param
.wwpn
!= port
->wwpn
)
1458 port
->wwnn
= plogi
->serv_param
.wwnn
;
1459 zfcp_fc_plogi_evaluate(port
, plogi
);
1463 case FSF_UNKNOWN_OP_SUBTYPE
:
1464 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1469 zfcp_port_put(port
);
1473 * zfcp_fsf_open_port - create and send open port request
1474 * @erp_action: pointer to struct zfcp_erp_action
1475 * Returns: 0 on success, error otherwise
1477 int zfcp_fsf_open_port(struct zfcp_erp_action
*erp_action
)
1479 struct qdio_buffer_element
*sbale
;
1480 struct zfcp_adapter
*adapter
= erp_action
->adapter
;
1481 struct zfcp_fsf_req
*req
;
1482 struct zfcp_port
*port
= erp_action
->port
;
1485 spin_lock_bh(&adapter
->req_q_lock
);
1486 if (zfcp_fsf_req_sbal_get(adapter
))
1489 req
= zfcp_fsf_req_create(adapter
,
1490 FSF_QTCB_OPEN_PORT_WITH_DID
,
1491 ZFCP_REQ_AUTO_CLEANUP
,
1492 adapter
->pool
.fsf_req_erp
);
1494 retval
= PTR_ERR(req
);
1498 sbale
= zfcp_qdio_sbale_req(req
);
1499 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_READ
;
1500 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
1502 req
->handler
= zfcp_fsf_open_port_handler
;
1503 req
->qtcb
->bottom
.support
.d_id
= port
->d_id
;
1505 req
->erp_action
= erp_action
;
1506 erp_action
->fsf_req
= req
;
1507 zfcp_port_get(port
);
1509 zfcp_fsf_start_erp_timer(req
);
1510 retval
= zfcp_fsf_req_send(req
);
1512 zfcp_fsf_req_free(req
);
1513 erp_action
->fsf_req
= NULL
;
1514 zfcp_port_put(port
);
1517 spin_unlock_bh(&adapter
->req_q_lock
);
1521 static void zfcp_fsf_close_port_handler(struct zfcp_fsf_req
*req
)
1523 struct zfcp_port
*port
= req
->data
;
1525 if (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)
1528 switch (req
->qtcb
->header
.fsf_status
) {
1529 case FSF_PORT_HANDLE_NOT_VALID
:
1530 zfcp_erp_adapter_reopen(port
->adapter
, 0, "fscph_1", req
);
1531 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1533 case FSF_ADAPTER_STATUS_AVAILABLE
:
1536 zfcp_erp_modify_port_status(port
, "fscph_2", req
,
1537 ZFCP_STATUS_COMMON_OPEN
,
1544 * zfcp_fsf_close_port - create and send close port request
1545 * @erp_action: pointer to struct zfcp_erp_action
1546 * Returns: 0 on success, error otherwise
1548 int zfcp_fsf_close_port(struct zfcp_erp_action
*erp_action
)
1550 struct qdio_buffer_element
*sbale
;
1551 struct zfcp_adapter
*adapter
= erp_action
->adapter
;
1552 struct zfcp_fsf_req
*req
;
1555 spin_lock_bh(&adapter
->req_q_lock
);
1556 if (zfcp_fsf_req_sbal_get(adapter
))
1559 req
= zfcp_fsf_req_create(adapter
, FSF_QTCB_CLOSE_PORT
,
1560 ZFCP_REQ_AUTO_CLEANUP
,
1561 adapter
->pool
.fsf_req_erp
);
1563 retval
= PTR_ERR(req
);
1567 sbale
= zfcp_qdio_sbale_req(req
);
1568 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_READ
;
1569 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
1571 req
->handler
= zfcp_fsf_close_port_handler
;
1572 req
->data
= erp_action
->port
;
1573 req
->erp_action
= erp_action
;
1574 req
->qtcb
->header
.port_handle
= erp_action
->port
->handle
;
1575 erp_action
->fsf_req
= req
;
1577 zfcp_fsf_start_erp_timer(req
);
1578 retval
= zfcp_fsf_req_send(req
);
1580 zfcp_fsf_req_free(req
);
1581 erp_action
->fsf_req
= NULL
;
1584 spin_unlock_bh(&adapter
->req_q_lock
);
1588 static void zfcp_fsf_open_wka_port_handler(struct zfcp_fsf_req
*req
)
1590 struct zfcp_wka_port
*wka_port
= req
->data
;
1591 struct fsf_qtcb_header
*header
= &req
->qtcb
->header
;
1593 if (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
) {
1594 wka_port
->status
= ZFCP_WKA_PORT_OFFLINE
;
1598 switch (header
->fsf_status
) {
1599 case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED
:
1600 dev_warn(&req
->adapter
->ccw_device
->dev
,
1601 "Opening WKA port 0x%x failed\n", wka_port
->d_id
);
1603 case FSF_ADAPTER_STATUS_AVAILABLE
:
1604 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1606 case FSF_ACCESS_DENIED
:
1607 wka_port
->status
= ZFCP_WKA_PORT_OFFLINE
;
1609 case FSF_PORT_ALREADY_OPEN
:
1612 wka_port
->handle
= header
->port_handle
;
1613 wka_port
->status
= ZFCP_WKA_PORT_ONLINE
;
1616 wake_up(&wka_port
->completion_wq
);
1620 * zfcp_fsf_open_wka_port - create and send open wka-port request
1621 * @wka_port: pointer to struct zfcp_wka_port
1622 * Returns: 0 on success, error otherwise
1624 int zfcp_fsf_open_wka_port(struct zfcp_wka_port
*wka_port
)
1626 struct qdio_buffer_element
*sbale
;
1627 struct zfcp_adapter
*adapter
= wka_port
->adapter
;
1628 struct zfcp_fsf_req
*req
;
1631 spin_lock_bh(&adapter
->req_q_lock
);
1632 if (zfcp_fsf_req_sbal_get(adapter
))
1635 req
= zfcp_fsf_req_create(adapter
,
1636 FSF_QTCB_OPEN_PORT_WITH_DID
,
1637 ZFCP_REQ_AUTO_CLEANUP
,
1638 adapter
->pool
.fsf_req_erp
);
1639 if (unlikely(IS_ERR(req
))) {
1640 retval
= PTR_ERR(req
);
1644 sbale
= zfcp_qdio_sbale_req(req
);
1645 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_READ
;
1646 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
1648 req
->handler
= zfcp_fsf_open_wka_port_handler
;
1649 req
->qtcb
->bottom
.support
.d_id
= wka_port
->d_id
;
1650 req
->data
= wka_port
;
1652 zfcp_fsf_start_timer(req
, ZFCP_FSF_REQUEST_TIMEOUT
);
1653 retval
= zfcp_fsf_req_send(req
);
1655 zfcp_fsf_req_free(req
);
1657 spin_unlock_bh(&adapter
->req_q_lock
);
1661 static void zfcp_fsf_close_wka_port_handler(struct zfcp_fsf_req
*req
)
1663 struct zfcp_wka_port
*wka_port
= req
->data
;
1665 if (req
->qtcb
->header
.fsf_status
== FSF_PORT_HANDLE_NOT_VALID
) {
1666 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1667 zfcp_erp_adapter_reopen(wka_port
->adapter
, 0, "fscwph1", req
);
1670 wka_port
->status
= ZFCP_WKA_PORT_OFFLINE
;
1671 wake_up(&wka_port
->completion_wq
);
1675 * zfcp_fsf_close_wka_port - create and send close wka port request
1676 * @erp_action: pointer to struct zfcp_erp_action
1677 * Returns: 0 on success, error otherwise
1679 int zfcp_fsf_close_wka_port(struct zfcp_wka_port
*wka_port
)
1681 struct qdio_buffer_element
*sbale
;
1682 struct zfcp_adapter
*adapter
= wka_port
->adapter
;
1683 struct zfcp_fsf_req
*req
;
1686 spin_lock_bh(&adapter
->req_q_lock
);
1687 if (zfcp_fsf_req_sbal_get(adapter
))
1690 req
= zfcp_fsf_req_create(adapter
, FSF_QTCB_CLOSE_PORT
,
1691 ZFCP_REQ_AUTO_CLEANUP
,
1692 adapter
->pool
.fsf_req_erp
);
1693 if (unlikely(IS_ERR(req
))) {
1694 retval
= PTR_ERR(req
);
1698 sbale
= zfcp_qdio_sbale_req(req
);
1699 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_READ
;
1700 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
1702 req
->handler
= zfcp_fsf_close_wka_port_handler
;
1703 req
->data
= wka_port
;
1704 req
->qtcb
->header
.port_handle
= wka_port
->handle
;
1706 zfcp_fsf_start_timer(req
, ZFCP_FSF_REQUEST_TIMEOUT
);
1707 retval
= zfcp_fsf_req_send(req
);
1709 zfcp_fsf_req_free(req
);
1711 spin_unlock_bh(&adapter
->req_q_lock
);
1715 static void zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req
*req
)
1717 struct zfcp_port
*port
= req
->data
;
1718 struct fsf_qtcb_header
*header
= &req
->qtcb
->header
;
1719 struct zfcp_unit
*unit
;
1721 if (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)
1724 switch (header
->fsf_status
) {
1725 case FSF_PORT_HANDLE_NOT_VALID
:
1726 zfcp_erp_adapter_reopen(port
->adapter
, 0, "fscpph1", req
);
1727 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1729 case FSF_ACCESS_DENIED
:
1730 zfcp_fsf_access_denied_port(req
, port
);
1732 case FSF_PORT_BOXED
:
1733 zfcp_erp_port_boxed(port
, "fscpph2", req
);
1734 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
|
1735 ZFCP_STATUS_FSFREQ_RETRY
;
1736 /* can't use generic zfcp_erp_modify_port_status because
1737 * ZFCP_STATUS_COMMON_OPEN must not be reset for the port */
1738 atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN
, &port
->status
);
1739 list_for_each_entry(unit
, &port
->unit_list_head
, list
)
1740 atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN
,
1743 case FSF_ADAPTER_STATUS_AVAILABLE
:
1744 switch (header
->fsf_status_qual
.word
[0]) {
1745 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE
:
1747 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED
:
1748 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1753 /* can't use generic zfcp_erp_modify_port_status because
1754 * ZFCP_STATUS_COMMON_OPEN must not be reset for the port
1756 atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN
, &port
->status
);
1757 list_for_each_entry(unit
, &port
->unit_list_head
, list
)
1758 atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN
,
1765 * zfcp_fsf_close_physical_port - close physical port
1766 * @erp_action: pointer to struct zfcp_erp_action
1767 * Returns: 0 on success
1769 int zfcp_fsf_close_physical_port(struct zfcp_erp_action
*erp_action
)
1771 struct qdio_buffer_element
*sbale
;
1772 struct zfcp_adapter
*adapter
= erp_action
->adapter
;
1773 struct zfcp_fsf_req
*req
;
1776 spin_lock_bh(&adapter
->req_q_lock
);
1777 if (zfcp_fsf_req_sbal_get(adapter
))
1780 req
= zfcp_fsf_req_create(adapter
, FSF_QTCB_CLOSE_PHYSICAL_PORT
,
1781 ZFCP_REQ_AUTO_CLEANUP
,
1782 adapter
->pool
.fsf_req_erp
);
1784 retval
= PTR_ERR(req
);
1788 sbale
= zfcp_qdio_sbale_req(req
);
1789 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_READ
;
1790 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
1792 req
->data
= erp_action
->port
;
1793 req
->qtcb
->header
.port_handle
= erp_action
->port
->handle
;
1794 req
->erp_action
= erp_action
;
1795 req
->handler
= zfcp_fsf_close_physical_port_handler
;
1796 erp_action
->fsf_req
= req
;
1798 zfcp_fsf_start_erp_timer(req
);
1799 retval
= zfcp_fsf_req_send(req
);
1801 zfcp_fsf_req_free(req
);
1802 erp_action
->fsf_req
= NULL
;
1805 spin_unlock_bh(&adapter
->req_q_lock
);
1809 static void zfcp_fsf_open_unit_handler(struct zfcp_fsf_req
*req
)
1811 struct zfcp_adapter
*adapter
= req
->adapter
;
1812 struct zfcp_unit
*unit
= req
->data
;
1813 struct fsf_qtcb_header
*header
= &req
->qtcb
->header
;
1814 struct fsf_qtcb_bottom_support
*bottom
= &req
->qtcb
->bottom
.support
;
1815 struct fsf_queue_designator
*queue_designator
=
1816 &header
->fsf_status_qual
.fsf_queue_designator
;
1817 int exclusive
, readwrite
;
1819 if (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)
1822 atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED
|
1823 ZFCP_STATUS_COMMON_ACCESS_BOXED
|
1824 ZFCP_STATUS_UNIT_SHARED
|
1825 ZFCP_STATUS_UNIT_READONLY
,
1828 switch (header
->fsf_status
) {
1830 case FSF_PORT_HANDLE_NOT_VALID
:
1831 zfcp_erp_adapter_reopen(unit
->port
->adapter
, 0, "fsouh_1", req
);
1833 case FSF_LUN_ALREADY_OPEN
:
1835 case FSF_ACCESS_DENIED
:
1836 zfcp_fsf_access_denied_unit(req
, unit
);
1837 atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED
, &unit
->status
);
1838 atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY
, &unit
->status
);
1840 case FSF_PORT_BOXED
:
1841 zfcp_erp_port_boxed(unit
->port
, "fsouh_2", req
);
1842 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
|
1843 ZFCP_STATUS_FSFREQ_RETRY
;
1845 case FSF_LUN_SHARING_VIOLATION
:
1846 if (header
->fsf_status_qual
.word
[0])
1847 dev_warn(&adapter
->ccw_device
->dev
,
1848 "LUN 0x%Lx on port 0x%Lx is already in "
1849 "use by CSS%d, MIF Image ID %x\n",
1850 (unsigned long long)unit
->fcp_lun
,
1851 (unsigned long long)unit
->port
->wwpn
,
1852 queue_designator
->cssid
,
1853 queue_designator
->hla
);
1855 zfcp_act_eval_err(adapter
,
1856 header
->fsf_status_qual
.word
[2]);
1857 zfcp_erp_unit_access_denied(unit
, "fsouh_3", req
);
1858 atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED
, &unit
->status
);
1859 atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY
, &unit
->status
);
1860 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1862 case FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED
:
1863 dev_warn(&adapter
->ccw_device
->dev
,
1864 "No handle is available for LUN "
1865 "0x%016Lx on port 0x%016Lx\n",
1866 (unsigned long long)unit
->fcp_lun
,
1867 (unsigned long long)unit
->port
->wwpn
);
1868 zfcp_erp_unit_failed(unit
, "fsouh_4", req
);
1870 case FSF_INVALID_COMMAND_OPTION
:
1871 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1873 case FSF_ADAPTER_STATUS_AVAILABLE
:
1874 switch (header
->fsf_status_qual
.word
[0]) {
1875 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE
:
1876 zfcp_test_link(unit
->port
);
1878 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED
:
1879 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1885 unit
->handle
= header
->lun_handle
;
1886 atomic_set_mask(ZFCP_STATUS_COMMON_OPEN
, &unit
->status
);
1888 if (!(adapter
->connection_features
& FSF_FEATURE_NPIV_MODE
) &&
1889 (adapter
->adapter_features
& FSF_FEATURE_LUN_SHARING
) &&
1890 !zfcp_ccw_priv_sch(adapter
)) {
1891 exclusive
= (bottom
->lun_access_info
&
1892 FSF_UNIT_ACCESS_EXCLUSIVE
);
1893 readwrite
= (bottom
->lun_access_info
&
1894 FSF_UNIT_ACCESS_OUTBOUND_TRANSFER
);
1897 atomic_set_mask(ZFCP_STATUS_UNIT_SHARED
,
1901 atomic_set_mask(ZFCP_STATUS_UNIT_READONLY
,
1903 dev_info(&adapter
->ccw_device
->dev
,
1904 "SCSI device at LUN 0x%016Lx on port "
1905 "0x%016Lx opened read-only\n",
1906 (unsigned long long)unit
->fcp_lun
,
1907 (unsigned long long)unit
->port
->wwpn
);
1910 if (exclusive
&& !readwrite
) {
1911 dev_err(&adapter
->ccw_device
->dev
,
1912 "Exclusive read-only access not "
1913 "supported (unit 0x%016Lx, "
1915 (unsigned long long)unit
->fcp_lun
,
1916 (unsigned long long)unit
->port
->wwpn
);
1917 zfcp_erp_unit_failed(unit
, "fsouh_5", req
);
1918 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1919 zfcp_erp_unit_shutdown(unit
, 0, "fsouh_6", req
);
1920 } else if (!exclusive
&& readwrite
) {
1921 dev_err(&adapter
->ccw_device
->dev
,
1922 "Shared read-write access not "
1923 "supported (unit 0x%016Lx, port "
1925 (unsigned long long)unit
->fcp_lun
,
1926 (unsigned long long)unit
->port
->wwpn
);
1927 zfcp_erp_unit_failed(unit
, "fsouh_7", req
);
1928 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1929 zfcp_erp_unit_shutdown(unit
, 0, "fsouh_8", req
);
1937 * zfcp_fsf_open_unit - open unit
1938 * @erp_action: pointer to struct zfcp_erp_action
1939 * Returns: 0 on success, error otherwise
1941 int zfcp_fsf_open_unit(struct zfcp_erp_action
*erp_action
)
1943 struct qdio_buffer_element
*sbale
;
1944 struct zfcp_adapter
*adapter
= erp_action
->adapter
;
1945 struct zfcp_fsf_req
*req
;
1948 spin_lock_bh(&adapter
->req_q_lock
);
1949 if (zfcp_fsf_req_sbal_get(adapter
))
1952 req
= zfcp_fsf_req_create(adapter
, FSF_QTCB_OPEN_LUN
,
1953 ZFCP_REQ_AUTO_CLEANUP
,
1954 adapter
->pool
.fsf_req_erp
);
1956 retval
= PTR_ERR(req
);
1960 sbale
= zfcp_qdio_sbale_req(req
);
1961 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_READ
;
1962 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
1964 req
->qtcb
->header
.port_handle
= erp_action
->port
->handle
;
1965 req
->qtcb
->bottom
.support
.fcp_lun
= erp_action
->unit
->fcp_lun
;
1966 req
->handler
= zfcp_fsf_open_unit_handler
;
1967 req
->data
= erp_action
->unit
;
1968 req
->erp_action
= erp_action
;
1969 erp_action
->fsf_req
= req
;
1971 if (!(adapter
->connection_features
& FSF_FEATURE_NPIV_MODE
))
1972 req
->qtcb
->bottom
.support
.option
= FSF_OPEN_LUN_SUPPRESS_BOXING
;
1974 zfcp_fsf_start_erp_timer(req
);
1975 retval
= zfcp_fsf_req_send(req
);
1977 zfcp_fsf_req_free(req
);
1978 erp_action
->fsf_req
= NULL
;
1981 spin_unlock_bh(&adapter
->req_q_lock
);
1985 static void zfcp_fsf_close_unit_handler(struct zfcp_fsf_req
*req
)
1987 struct zfcp_unit
*unit
= req
->data
;
1989 if (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)
1992 switch (req
->qtcb
->header
.fsf_status
) {
1993 case FSF_PORT_HANDLE_NOT_VALID
:
1994 zfcp_erp_adapter_reopen(unit
->port
->adapter
, 0, "fscuh_1", req
);
1995 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
1997 case FSF_LUN_HANDLE_NOT_VALID
:
1998 zfcp_erp_port_reopen(unit
->port
, 0, "fscuh_2", req
);
1999 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
2001 case FSF_PORT_BOXED
:
2002 zfcp_erp_port_boxed(unit
->port
, "fscuh_3", req
);
2003 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
|
2004 ZFCP_STATUS_FSFREQ_RETRY
;
2006 case FSF_ADAPTER_STATUS_AVAILABLE
:
2007 switch (req
->qtcb
->header
.fsf_status_qual
.word
[0]) {
2008 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE
:
2009 zfcp_test_link(unit
->port
);
2011 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED
:
2012 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
2017 atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN
, &unit
->status
);
2023 * zfcp_fsf_close_unit - close zfcp unit
2024 * @erp_action: pointer to struct zfcp_unit
2025 * Returns: 0 on success, error otherwise
2027 int zfcp_fsf_close_unit(struct zfcp_erp_action
*erp_action
)
2029 struct qdio_buffer_element
*sbale
;
2030 struct zfcp_adapter
*adapter
= erp_action
->adapter
;
2031 struct zfcp_fsf_req
*req
;
2034 spin_lock_bh(&adapter
->req_q_lock
);
2035 if (zfcp_fsf_req_sbal_get(adapter
))
2037 req
= zfcp_fsf_req_create(adapter
, FSF_QTCB_CLOSE_LUN
,
2038 ZFCP_REQ_AUTO_CLEANUP
,
2039 adapter
->pool
.fsf_req_erp
);
2041 retval
= PTR_ERR(req
);
2045 sbale
= zfcp_qdio_sbale_req(req
);
2046 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_READ
;
2047 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
2049 req
->qtcb
->header
.port_handle
= erp_action
->port
->handle
;
2050 req
->qtcb
->header
.lun_handle
= erp_action
->unit
->handle
;
2051 req
->handler
= zfcp_fsf_close_unit_handler
;
2052 req
->data
= erp_action
->unit
;
2053 req
->erp_action
= erp_action
;
2054 erp_action
->fsf_req
= req
;
2056 zfcp_fsf_start_erp_timer(req
);
2057 retval
= zfcp_fsf_req_send(req
);
2059 zfcp_fsf_req_free(req
);
2060 erp_action
->fsf_req
= NULL
;
2063 spin_unlock_bh(&adapter
->req_q_lock
);
2067 static void zfcp_fsf_update_lat(struct fsf_latency_record
*lat_rec
, u32 lat
)
2069 lat_rec
->sum
+= lat
;
2070 lat_rec
->min
= min(lat_rec
->min
, lat
);
2071 lat_rec
->max
= max(lat_rec
->max
, lat
);
2074 static void zfcp_fsf_req_latency(struct zfcp_fsf_req
*req
)
2076 struct fsf_qual_latency_info
*lat_inf
;
2077 struct latency_cont
*lat
;
2078 struct zfcp_unit
*unit
= req
->unit
;
2080 lat_inf
= &req
->qtcb
->prefix
.prot_status_qual
.latency_info
;
2082 switch (req
->qtcb
->bottom
.io
.data_direction
) {
2083 case FSF_DATADIR_READ
:
2084 lat
= &unit
->latencies
.read
;
2086 case FSF_DATADIR_WRITE
:
2087 lat
= &unit
->latencies
.write
;
2089 case FSF_DATADIR_CMND
:
2090 lat
= &unit
->latencies
.cmd
;
2096 spin_lock(&unit
->latencies
.lock
);
2097 zfcp_fsf_update_lat(&lat
->channel
, lat_inf
->channel_lat
);
2098 zfcp_fsf_update_lat(&lat
->fabric
, lat_inf
->fabric_lat
);
2100 spin_unlock(&unit
->latencies
.lock
);
2103 #ifdef CONFIG_BLK_DEV_IO_TRACE
2104 static void zfcp_fsf_trace_latency(struct zfcp_fsf_req
*fsf_req
)
2106 struct fsf_qual_latency_info
*lat_inf
;
2107 struct scsi_cmnd
*scsi_cmnd
= (struct scsi_cmnd
*)fsf_req
->data
;
2108 struct request
*req
= scsi_cmnd
->request
;
2109 struct zfcp_blk_drv_data trace
;
2110 int ticks
= fsf_req
->adapter
->timer_ticks
;
2113 trace
.magic
= ZFCP_BLK_DRV_DATA_MAGIC
;
2114 if (fsf_req
->adapter
->adapter_features
& FSF_FEATURE_MEASUREMENT_DATA
) {
2115 trace
.flags
|= ZFCP_BLK_LAT_VALID
;
2116 lat_inf
= &fsf_req
->qtcb
->prefix
.prot_status_qual
.latency_info
;
2117 trace
.channel_lat
= lat_inf
->channel_lat
* ticks
;
2118 trace
.fabric_lat
= lat_inf
->fabric_lat
* ticks
;
2120 if (fsf_req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)
2121 trace
.flags
|= ZFCP_BLK_REQ_ERROR
;
2122 trace
.inb_usage
= fsf_req
->qdio_inb_usage
;
2123 trace
.outb_usage
= fsf_req
->qdio_outb_usage
;
2125 blk_add_driver_data(req
->q
, req
, &trace
, sizeof(trace
));
2128 static inline void zfcp_fsf_trace_latency(struct zfcp_fsf_req
*fsf_req
)
2133 static void zfcp_fsf_send_fcp_command_task_handler(struct zfcp_fsf_req
*req
)
2135 struct scsi_cmnd
*scpnt
;
2136 struct fcp_rsp_iu
*fcp_rsp_iu
= (struct fcp_rsp_iu
*)
2137 &(req
->qtcb
->bottom
.io
.fcp_rsp
);
2139 char *fcp_rsp_info
= (unsigned char *) &fcp_rsp_iu
[1];
2140 unsigned long flags
;
2142 read_lock_irqsave(&req
->adapter
->abort_lock
, flags
);
2145 if (unlikely(!scpnt
)) {
2146 read_unlock_irqrestore(&req
->adapter
->abort_lock
, flags
);
2150 if (unlikely(req
->status
& ZFCP_STATUS_FSFREQ_ABORTED
)) {
2151 set_host_byte(scpnt
, DID_SOFT_ERROR
);
2152 goto skip_fsfstatus
;
2155 if (unlikely(req
->status
& ZFCP_STATUS_FSFREQ_ERROR
)) {
2156 set_host_byte(scpnt
, DID_ERROR
);
2157 goto skip_fsfstatus
;
2160 set_msg_byte(scpnt
, COMMAND_COMPLETE
);
2162 scpnt
->result
|= fcp_rsp_iu
->scsi_status
;
2164 if (req
->adapter
->adapter_features
& FSF_FEATURE_MEASUREMENT_DATA
)
2165 zfcp_fsf_req_latency(req
);
2167 zfcp_fsf_trace_latency(req
);
2169 if (unlikely(fcp_rsp_iu
->validity
.bits
.fcp_rsp_len_valid
)) {
2170 if (fcp_rsp_info
[3] == RSP_CODE_GOOD
)
2171 set_host_byte(scpnt
, DID_OK
);
2173 set_host_byte(scpnt
, DID_ERROR
);
2174 goto skip_fsfstatus
;
2178 if (unlikely(fcp_rsp_iu
->validity
.bits
.fcp_sns_len_valid
)) {
2179 sns_len
= FSF_FCP_RSP_SIZE
- sizeof(struct fcp_rsp_iu
) +
2180 fcp_rsp_iu
->fcp_rsp_len
;
2181 sns_len
= min(sns_len
, (u32
) SCSI_SENSE_BUFFERSIZE
);
2182 sns_len
= min(sns_len
, fcp_rsp_iu
->fcp_sns_len
);
2184 memcpy(scpnt
->sense_buffer
,
2185 zfcp_get_fcp_sns_info_ptr(fcp_rsp_iu
), sns_len
);
2188 if (unlikely(fcp_rsp_iu
->validity
.bits
.fcp_resid_under
)) {
2189 scsi_set_resid(scpnt
, fcp_rsp_iu
->fcp_resid
);
2190 if (scsi_bufflen(scpnt
) - scsi_get_resid(scpnt
) <
2192 set_host_byte(scpnt
, DID_ERROR
);
2195 if (scpnt
->result
!= 0)
2196 zfcp_scsi_dbf_event_result("erro", 3, req
->adapter
, scpnt
, req
);
2197 else if (scpnt
->retries
> 0)
2198 zfcp_scsi_dbf_event_result("retr", 4, req
->adapter
, scpnt
, req
);
2200 zfcp_scsi_dbf_event_result("norm", 6, req
->adapter
, scpnt
, req
);
2202 scpnt
->host_scribble
= NULL
;
2203 (scpnt
->scsi_done
) (scpnt
);
2205 * We must hold this lock until scsi_done has been called.
2206 * Otherwise we may call scsi_done after abort regarding this
2207 * command has completed.
2208 * Note: scsi_done must not block!
2210 read_unlock_irqrestore(&req
->adapter
->abort_lock
, flags
);
2213 static void zfcp_fsf_send_fcp_ctm_handler(struct zfcp_fsf_req
*req
)
2215 struct fcp_rsp_iu
*fcp_rsp_iu
= (struct fcp_rsp_iu
*)
2216 &(req
->qtcb
->bottom
.io
.fcp_rsp
);
2217 char *fcp_rsp_info
= (unsigned char *) &fcp_rsp_iu
[1];
2219 if ((fcp_rsp_info
[3] != RSP_CODE_GOOD
) ||
2220 (req
->status
& ZFCP_STATUS_FSFREQ_ERROR
))
2221 req
->status
|= ZFCP_STATUS_FSFREQ_TMFUNCFAILED
;
2225 static void zfcp_fsf_send_fcp_command_handler(struct zfcp_fsf_req
*req
)
2227 struct zfcp_unit
*unit
;
2228 struct fsf_qtcb_header
*header
= &req
->qtcb
->header
;
2230 if (unlikely(req
->status
& ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT
))
2235 if (unlikely(req
->status
& ZFCP_STATUS_FSFREQ_ERROR
))
2236 goto skip_fsfstatus
;
2238 switch (header
->fsf_status
) {
2239 case FSF_HANDLE_MISMATCH
:
2240 case FSF_PORT_HANDLE_NOT_VALID
:
2241 zfcp_erp_adapter_reopen(unit
->port
->adapter
, 0, "fssfch1", req
);
2242 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
2244 case FSF_FCPLUN_NOT_VALID
:
2245 case FSF_LUN_HANDLE_NOT_VALID
:
2246 zfcp_erp_port_reopen(unit
->port
, 0, "fssfch2", req
);
2247 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
2249 case FSF_SERVICE_CLASS_NOT_SUPPORTED
:
2250 zfcp_fsf_class_not_supp(req
);
2252 case FSF_ACCESS_DENIED
:
2253 zfcp_fsf_access_denied_unit(req
, unit
);
2255 case FSF_DIRECTION_INDICATOR_NOT_VALID
:
2256 dev_err(&req
->adapter
->ccw_device
->dev
,
2257 "Incorrect direction %d, unit 0x%016Lx on port "
2258 "0x%016Lx closed\n",
2259 req
->qtcb
->bottom
.io
.data_direction
,
2260 (unsigned long long)unit
->fcp_lun
,
2261 (unsigned long long)unit
->port
->wwpn
);
2262 zfcp_erp_adapter_shutdown(unit
->port
->adapter
, 0, "fssfch3",
2264 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
2266 case FSF_CMND_LENGTH_NOT_VALID
:
2267 dev_err(&req
->adapter
->ccw_device
->dev
,
2268 "Incorrect CDB length %d, unit 0x%016Lx on "
2269 "port 0x%016Lx closed\n",
2270 req
->qtcb
->bottom
.io
.fcp_cmnd_length
,
2271 (unsigned long long)unit
->fcp_lun
,
2272 (unsigned long long)unit
->port
->wwpn
);
2273 zfcp_erp_adapter_shutdown(unit
->port
->adapter
, 0, "fssfch4",
2275 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
2277 case FSF_PORT_BOXED
:
2278 zfcp_erp_port_boxed(unit
->port
, "fssfch5", req
);
2279 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
|
2280 ZFCP_STATUS_FSFREQ_RETRY
;
2283 zfcp_erp_unit_boxed(unit
, "fssfch6", req
);
2284 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
|
2285 ZFCP_STATUS_FSFREQ_RETRY
;
2287 case FSF_ADAPTER_STATUS_AVAILABLE
:
2288 if (header
->fsf_status_qual
.word
[0] ==
2289 FSF_SQ_INVOKE_LINK_TEST_PROCEDURE
)
2290 zfcp_test_link(unit
->port
);
2291 req
->status
|= ZFCP_STATUS_FSFREQ_ERROR
;
2295 if (req
->status
& ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT
)
2296 zfcp_fsf_send_fcp_ctm_handler(req
);
2298 zfcp_fsf_send_fcp_command_task_handler(req
);
2300 zfcp_unit_put(unit
);
2304 static void zfcp_set_fcp_dl(struct fcp_cmnd_iu
*fcp_cmd
, u32 fcp_dl
)
2309 * fcp_dl_addr = start address of fcp_cmnd structure +
2310 * size of fixed part + size of dynamically sized add_dcp_cdb field
2311 * SEE FCP-2 documentation
2313 fcp_dl_ptr
= (u32
*) ((unsigned char *) &fcp_cmd
[1] +
2314 (fcp_cmd
->add_fcp_cdb_length
<< 2));
2315 *fcp_dl_ptr
= fcp_dl
;
2319 * zfcp_fsf_send_fcp_command_task - initiate an FCP command (for a SCSI command)
2320 * @unit: unit where command is sent to
2321 * @scsi_cmnd: scsi command to be sent
2323 int zfcp_fsf_send_fcp_command_task(struct zfcp_unit
*unit
,
2324 struct scsi_cmnd
*scsi_cmnd
)
2326 struct zfcp_fsf_req
*req
;
2327 struct fcp_cmnd_iu
*fcp_cmnd_iu
;
2328 unsigned int sbtype
= SBAL_FLAGS0_TYPE_READ
;
2329 int real_bytes
, retval
= -EIO
;
2330 struct zfcp_adapter
*adapter
= unit
->port
->adapter
;
2332 if (unlikely(!(atomic_read(&unit
->status
) &
2333 ZFCP_STATUS_COMMON_UNBLOCKED
)))
2336 spin_lock(&adapter
->req_q_lock
);
2337 if (atomic_read(&adapter
->req_q
.count
) <= 0) {
2338 atomic_inc(&adapter
->qdio_outb_full
);
2341 req
= zfcp_fsf_req_create(adapter
, FSF_QTCB_FCP_CMND
,
2342 ZFCP_REQ_AUTO_CLEANUP
,
2343 adapter
->pool
.fsf_req_scsi
);
2345 retval
= PTR_ERR(req
);
2349 zfcp_unit_get(unit
);
2351 req
->data
= scsi_cmnd
;
2352 req
->handler
= zfcp_fsf_send_fcp_command_handler
;
2353 req
->qtcb
->header
.lun_handle
= unit
->handle
;
2354 req
->qtcb
->header
.port_handle
= unit
->port
->handle
;
2355 req
->qtcb
->bottom
.io
.service_class
= FSF_CLASS_3
;
2357 scsi_cmnd
->host_scribble
= (unsigned char *) req
->req_id
;
2359 fcp_cmnd_iu
= (struct fcp_cmnd_iu
*) &(req
->qtcb
->bottom
.io
.fcp_cmnd
);
2360 fcp_cmnd_iu
->fcp_lun
= unit
->fcp_lun
;
2362 * set depending on data direction:
2363 * data direction bits in SBALE (SB Type)
2364 * data direction bits in QTCB
2365 * data direction bits in FCP_CMND IU
2367 switch (scsi_cmnd
->sc_data_direction
) {
2369 req
->qtcb
->bottom
.io
.data_direction
= FSF_DATADIR_CMND
;
2371 case DMA_FROM_DEVICE
:
2372 req
->qtcb
->bottom
.io
.data_direction
= FSF_DATADIR_READ
;
2373 fcp_cmnd_iu
->rddata
= 1;
2376 req
->qtcb
->bottom
.io
.data_direction
= FSF_DATADIR_WRITE
;
2377 sbtype
= SBAL_FLAGS0_TYPE_WRITE
;
2378 fcp_cmnd_iu
->wddata
= 1;
2380 case DMA_BIDIRECTIONAL
:
2381 goto failed_scsi_cmnd
;
2384 if (likely((scsi_cmnd
->device
->simple_tags
) ||
2385 ((atomic_read(&unit
->status
) & ZFCP_STATUS_UNIT_READONLY
) &&
2386 (atomic_read(&unit
->status
) & ZFCP_STATUS_UNIT_SHARED
))))
2387 fcp_cmnd_iu
->task_attribute
= SIMPLE_Q
;
2389 fcp_cmnd_iu
->task_attribute
= UNTAGGED
;
2391 if (unlikely(scsi_cmnd
->cmd_len
> FCP_CDB_LENGTH
))
2392 fcp_cmnd_iu
->add_fcp_cdb_length
=
2393 (scsi_cmnd
->cmd_len
- FCP_CDB_LENGTH
) >> 2;
2395 memcpy(fcp_cmnd_iu
->fcp_cdb
, scsi_cmnd
->cmnd
, scsi_cmnd
->cmd_len
);
2397 req
->qtcb
->bottom
.io
.fcp_cmnd_length
= sizeof(struct fcp_cmnd_iu
) +
2398 fcp_cmnd_iu
->add_fcp_cdb_length
+ sizeof(u32
);
2400 real_bytes
= zfcp_qdio_sbals_from_sg(req
, sbtype
,
2401 scsi_sglist(scsi_cmnd
),
2402 FSF_MAX_SBALS_PER_REQ
);
2403 if (unlikely(real_bytes
< 0)) {
2404 if (req
->sbal_number
>= FSF_MAX_SBALS_PER_REQ
) {
2405 dev_err(&adapter
->ccw_device
->dev
,
2406 "Oversize data package, unit 0x%016Lx "
2407 "on port 0x%016Lx closed\n",
2408 (unsigned long long)unit
->fcp_lun
,
2409 (unsigned long long)unit
->port
->wwpn
);
2410 zfcp_erp_unit_shutdown(unit
, 0, "fssfct1", req
);
2413 goto failed_scsi_cmnd
;
2416 zfcp_set_fcp_dl(fcp_cmnd_iu
, real_bytes
);
2418 retval
= zfcp_fsf_req_send(req
);
2419 if (unlikely(retval
))
2420 goto failed_scsi_cmnd
;
2425 zfcp_unit_put(unit
);
2426 zfcp_fsf_req_free(req
);
2427 scsi_cmnd
->host_scribble
= NULL
;
2429 spin_unlock(&adapter
->req_q_lock
);
2434 * zfcp_fsf_send_fcp_ctm - send SCSI task management command
2435 * @unit: pointer to struct zfcp_unit
2436 * @tm_flags: unsigned byte for task management flags
2437 * Returns: on success pointer to struct fsf_req, NULL otherwise
2439 struct zfcp_fsf_req
*zfcp_fsf_send_fcp_ctm(struct zfcp_unit
*unit
, u8 tm_flags
)
2441 struct qdio_buffer_element
*sbale
;
2442 struct zfcp_fsf_req
*req
= NULL
;
2443 struct fcp_cmnd_iu
*fcp_cmnd_iu
;
2444 struct zfcp_adapter
*adapter
= unit
->port
->adapter
;
2446 if (unlikely(!(atomic_read(&unit
->status
) &
2447 ZFCP_STATUS_COMMON_UNBLOCKED
)))
2450 spin_lock_bh(&adapter
->req_q_lock
);
2451 if (zfcp_fsf_req_sbal_get(adapter
))
2453 req
= zfcp_fsf_req_create(adapter
, FSF_QTCB_FCP_CMND
, 0,
2454 adapter
->pool
.fsf_req_scsi
);
2460 req
->status
|= ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT
;
2462 req
->handler
= zfcp_fsf_send_fcp_command_handler
;
2463 req
->qtcb
->header
.lun_handle
= unit
->handle
;
2464 req
->qtcb
->header
.port_handle
= unit
->port
->handle
;
2465 req
->qtcb
->bottom
.io
.data_direction
= FSF_DATADIR_CMND
;
2466 req
->qtcb
->bottom
.io
.service_class
= FSF_CLASS_3
;
2467 req
->qtcb
->bottom
.io
.fcp_cmnd_length
= sizeof(struct fcp_cmnd_iu
) +
2470 sbale
= zfcp_qdio_sbale_req(req
);
2471 sbale
[0].flags
|= SBAL_FLAGS0_TYPE_WRITE
;
2472 sbale
[1].flags
|= SBAL_FLAGS_LAST_ENTRY
;
2474 fcp_cmnd_iu
= (struct fcp_cmnd_iu
*) &req
->qtcb
->bottom
.io
.fcp_cmnd
;
2475 fcp_cmnd_iu
->fcp_lun
= unit
->fcp_lun
;
2476 fcp_cmnd_iu
->task_management_flags
= tm_flags
;
2478 zfcp_fsf_start_timer(req
, ZFCP_SCSI_ER_TIMEOUT
);
2479 if (!zfcp_fsf_req_send(req
))
2482 zfcp_fsf_req_free(req
);
2485 spin_unlock_bh(&adapter
->req_q_lock
);
2489 static void zfcp_fsf_control_file_handler(struct zfcp_fsf_req
*req
)
2494 * zfcp_fsf_control_file - control file upload/download
2495 * @adapter: pointer to struct zfcp_adapter
2496 * @fsf_cfdc: pointer to struct zfcp_fsf_cfdc
2497 * Returns: on success pointer to struct zfcp_fsf_req, NULL otherwise
2499 struct zfcp_fsf_req
*zfcp_fsf_control_file(struct zfcp_adapter
*adapter
,
2500 struct zfcp_fsf_cfdc
*fsf_cfdc
)
2502 struct qdio_buffer_element
*sbale
;
2503 struct zfcp_fsf_req
*req
= NULL
;
2504 struct fsf_qtcb_bottom_support
*bottom
;
2505 int direction
, retval
= -EIO
, bytes
;
2507 if (!(adapter
->adapter_features
& FSF_FEATURE_CFDC
))
2508 return ERR_PTR(-EOPNOTSUPP
);
2510 switch (fsf_cfdc
->command
) {
2511 case FSF_QTCB_DOWNLOAD_CONTROL_FILE
:
2512 direction
= SBAL_FLAGS0_TYPE_WRITE
;
2514 case FSF_QTCB_UPLOAD_CONTROL_FILE
:
2515 direction
= SBAL_FLAGS0_TYPE_READ
;
2518 return ERR_PTR(-EINVAL
);
2521 spin_lock_bh(&adapter
->req_q_lock
);
2522 if (zfcp_fsf_req_sbal_get(adapter
))
2525 req
= zfcp_fsf_req_create(adapter
, fsf_cfdc
->command
, 0, NULL
);
2531 req
->handler
= zfcp_fsf_control_file_handler
;
2533 sbale
= zfcp_qdio_sbale_req(req
);
2534 sbale
[0].flags
|= direction
;
2536 bottom
= &req
->qtcb
->bottom
.support
;
2537 bottom
->operation_subtype
= FSF_CFDC_OPERATION_SUBTYPE
;
2538 bottom
->option
= fsf_cfdc
->option
;
2540 bytes
= zfcp_qdio_sbals_from_sg(req
, direction
, fsf_cfdc
->sg
,
2541 FSF_MAX_SBALS_PER_REQ
);
2542 if (bytes
!= ZFCP_CFDC_MAX_SIZE
) {
2544 zfcp_fsf_req_free(req
);
2548 zfcp_fsf_start_timer(req
, ZFCP_FSF_REQUEST_TIMEOUT
);
2549 retval
= zfcp_fsf_req_send(req
);
2551 spin_unlock_bh(&adapter
->req_q_lock
);
2554 wait_event(req
->completion_wq
,
2555 req
->status
& ZFCP_STATUS_FSFREQ_COMPLETED
);
2558 return ERR_PTR(retval
);