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>
13 #include <scsi/fc/fc_els.h>
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 if (likely(req->qtcb))
115 mempool_free(req->qtcb, req->adapter->pool.qtcb_pool);
116 mempool_free(req, req->pool);
120 if (likely(req->qtcb))
121 kmem_cache_free(zfcp_data.qtcb_cache, req->qtcb);
125 static void zfcp_fsf_status_read_port_closed(struct zfcp_fsf_req *req)
128 struct fsf_status_read_buffer *sr_buf = req->data;
129 struct zfcp_adapter *adapter = req->adapter;
130 struct zfcp_port *port;
131 int d_id = sr_buf->d_id & ZFCP_DID_MASK;
133 read_lock_irqsave(&adapter->port_list_lock, flags);
134 list_for_each_entry(port, &adapter->port_list, list)
135 if (port->d_id == d_id) {
136 zfcp_erp_port_reopen(port, 0, "fssrpc1", req);
139 read_unlock_irqrestore(&adapter->port_list_lock, flags);
142 static void zfcp_fsf_link_down_info_eval(struct zfcp_fsf_req *req, char *id,
143 struct fsf_link_down_info *link_down)
145 struct zfcp_adapter *adapter = req->adapter;
147 if (atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED)
150 atomic_set_mask(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED, &adapter->status);
152 zfcp_scsi_schedule_rports_block(adapter);
157 switch (link_down->error_code) {
158 case FSF_PSQ_LINK_NO_LIGHT:
159 dev_warn(&req->adapter->ccw_device->dev,
160 "There is no light signal from the local "
161 "fibre channel cable\n");
163 case FSF_PSQ_LINK_WRAP_PLUG:
164 dev_warn(&req->adapter->ccw_device->dev,
165 "There is a wrap plug instead of a fibre "
168 case FSF_PSQ_LINK_NO_FCP:
169 dev_warn(&req->adapter->ccw_device->dev,
170 "The adjacent fibre channel node does not "
173 case FSF_PSQ_LINK_FIRMWARE_UPDATE:
174 dev_warn(&req->adapter->ccw_device->dev,
175 "The FCP device is suspended because of a "
176 "firmware update\n");
178 case FSF_PSQ_LINK_INVALID_WWPN:
179 dev_warn(&req->adapter->ccw_device->dev,
180 "The FCP device detected a WWPN that is "
181 "duplicate or not valid\n");
183 case FSF_PSQ_LINK_NO_NPIV_SUPPORT:
184 dev_warn(&req->adapter->ccw_device->dev,
185 "The fibre channel fabric does not support NPIV\n");
187 case FSF_PSQ_LINK_NO_FCP_RESOURCES:
188 dev_warn(&req->adapter->ccw_device->dev,
189 "The FCP adapter cannot support more NPIV ports\n");
191 case FSF_PSQ_LINK_NO_FABRIC_RESOURCES:
192 dev_warn(&req->adapter->ccw_device->dev,
193 "The adjacent switch cannot support "
194 "more NPIV ports\n");
196 case FSF_PSQ_LINK_FABRIC_LOGIN_UNABLE:
197 dev_warn(&req->adapter->ccw_device->dev,
198 "The FCP adapter could not log in to the "
199 "fibre channel fabric\n");
201 case FSF_PSQ_LINK_WWPN_ASSIGNMENT_CORRUPTED:
202 dev_warn(&req->adapter->ccw_device->dev,
203 "The WWPN assignment file on the FCP adapter "
204 "has been damaged\n");
206 case FSF_PSQ_LINK_MODE_TABLE_CURRUPTED:
207 dev_warn(&req->adapter->ccw_device->dev,
208 "The mode table on the FCP adapter "
209 "has been damaged\n");
211 case FSF_PSQ_LINK_NO_WWPN_ASSIGNMENT:
212 dev_warn(&req->adapter->ccw_device->dev,
213 "All NPIV ports on the FCP adapter have "
217 dev_warn(&req->adapter->ccw_device->dev,
218 "The link between the FCP adapter and "
219 "the FC fabric is down\n");
222 zfcp_erp_adapter_failed(adapter, id, req);
225 static void zfcp_fsf_status_read_link_down(struct zfcp_fsf_req *req)
227 struct fsf_status_read_buffer *sr_buf = req->data;
228 struct fsf_link_down_info *ldi =
229 (struct fsf_link_down_info *) &sr_buf->payload;
231 switch (sr_buf->status_subtype) {
232 case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK:
233 zfcp_fsf_link_down_info_eval(req, "fssrld1", ldi);
235 case FSF_STATUS_READ_SUB_FDISC_FAILED:
236 zfcp_fsf_link_down_info_eval(req, "fssrld2", ldi);
238 case FSF_STATUS_READ_SUB_FIRMWARE_UPDATE:
239 zfcp_fsf_link_down_info_eval(req, "fssrld3", NULL);
243 static void zfcp_fsf_status_read_handler(struct zfcp_fsf_req *req)
245 struct zfcp_adapter *adapter = req->adapter;
246 struct fsf_status_read_buffer *sr_buf = req->data;
248 if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) {
249 zfcp_dbf_hba_fsf_unsol("dism", adapter->dbf, sr_buf);
250 mempool_free(sr_buf, adapter->pool.status_read_data);
251 zfcp_fsf_req_free(req);
255 zfcp_dbf_hba_fsf_unsol("read", adapter->dbf, sr_buf);
257 switch (sr_buf->status_type) {
258 case FSF_STATUS_READ_PORT_CLOSED:
259 zfcp_fsf_status_read_port_closed(req);
261 case FSF_STATUS_READ_INCOMING_ELS:
262 zfcp_fc_incoming_els(req);
264 case FSF_STATUS_READ_SENSE_DATA_AVAIL:
266 case FSF_STATUS_READ_BIT_ERROR_THRESHOLD:
267 dev_warn(&adapter->ccw_device->dev,
268 "The error threshold for checksum statistics "
269 "has been exceeded\n");
270 zfcp_dbf_hba_berr(adapter->dbf, req);
272 case FSF_STATUS_READ_LINK_DOWN:
273 zfcp_fsf_status_read_link_down(req);
275 case FSF_STATUS_READ_LINK_UP:
276 dev_info(&adapter->ccw_device->dev,
277 "The local link has been restored\n");
278 /* All ports should be marked as ready to run again */
279 zfcp_erp_modify_adapter_status(adapter, "fssrh_1", NULL,
280 ZFCP_STATUS_COMMON_RUNNING,
282 zfcp_erp_adapter_reopen(adapter,
283 ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED |
284 ZFCP_STATUS_COMMON_ERP_FAILED,
287 case FSF_STATUS_READ_NOTIFICATION_LOST:
288 if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_ACT_UPDATED)
289 zfcp_erp_adapter_access_changed(adapter, "fssrh_3",
291 if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_INCOMING_ELS)
292 queue_work(adapter->work_queue, &adapter->scan_work);
294 case FSF_STATUS_READ_CFDC_UPDATED:
295 zfcp_erp_adapter_access_changed(adapter, "fssrh_4", req);
297 case FSF_STATUS_READ_FEATURE_UPDATE_ALERT:
298 adapter->adapter_features = sr_buf->payload.word[0];
302 mempool_free(sr_buf, adapter->pool.status_read_data);
303 zfcp_fsf_req_free(req);
305 atomic_inc(&adapter->stat_miss);
306 queue_work(adapter->work_queue, &adapter->stat_work);
309 static void zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req *req)
311 switch (req->qtcb->header.fsf_status_qual.word[0]) {
312 case FSF_SQ_FCP_RSP_AVAILABLE:
313 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
314 case FSF_SQ_NO_RETRY_POSSIBLE:
315 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
317 case FSF_SQ_COMMAND_ABORTED:
318 req->status |= ZFCP_STATUS_FSFREQ_ABORTED;
320 case FSF_SQ_NO_RECOM:
321 dev_err(&req->adapter->ccw_device->dev,
322 "The FCP adapter reported a problem "
323 "that cannot be recovered\n");
324 zfcp_erp_adapter_shutdown(req->adapter, 0, "fsfsqe1", req);
327 /* all non-return stats set FSFREQ_ERROR*/
328 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
331 static void zfcp_fsf_fsfstatus_eval(struct zfcp_fsf_req *req)
333 if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR))
336 switch (req->qtcb->header.fsf_status) {
337 case FSF_UNKNOWN_COMMAND:
338 dev_err(&req->adapter->ccw_device->dev,
339 "The FCP adapter does not recognize the command 0x%x\n",
340 req->qtcb->header.fsf_command);
341 zfcp_erp_adapter_shutdown(req->adapter, 0, "fsfse_1", req);
342 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
344 case FSF_ADAPTER_STATUS_AVAILABLE:
345 zfcp_fsf_fsfstatus_qual_eval(req);
350 static void zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *req)
352 struct zfcp_adapter *adapter = req->adapter;
353 struct fsf_qtcb *qtcb = req->qtcb;
354 union fsf_prot_status_qual *psq = &qtcb->prefix.prot_status_qual;
356 zfcp_dbf_hba_fsf_response(req);
358 if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) {
359 req->status |= ZFCP_STATUS_FSFREQ_ERROR |
360 ZFCP_STATUS_FSFREQ_RETRY; /* only for SCSI cmnds. */
364 switch (qtcb->prefix.prot_status) {
366 case FSF_PROT_FSF_STATUS_PRESENTED:
368 case FSF_PROT_QTCB_VERSION_ERROR:
369 dev_err(&adapter->ccw_device->dev,
370 "QTCB version 0x%x not supported by FCP adapter "
371 "(0x%x to 0x%x)\n", FSF_QTCB_CURRENT_VERSION,
372 psq->word[0], psq->word[1]);
373 zfcp_erp_adapter_shutdown(adapter, 0, "fspse_1", req);
375 case FSF_PROT_ERROR_STATE:
376 case FSF_PROT_SEQ_NUMB_ERROR:
377 zfcp_erp_adapter_reopen(adapter, 0, "fspse_2", req);
378 req->status |= ZFCP_STATUS_FSFREQ_RETRY;
380 case FSF_PROT_UNSUPP_QTCB_TYPE:
381 dev_err(&adapter->ccw_device->dev,
382 "The QTCB type is not supported by the FCP adapter\n");
383 zfcp_erp_adapter_shutdown(adapter, 0, "fspse_3", req);
385 case FSF_PROT_HOST_CONNECTION_INITIALIZING:
386 atomic_set_mask(ZFCP_STATUS_ADAPTER_HOST_CON_INIT,
389 case FSF_PROT_DUPLICATE_REQUEST_ID:
390 dev_err(&adapter->ccw_device->dev,
391 "0x%Lx is an ambiguous request identifier\n",
392 (unsigned long long)qtcb->bottom.support.req_handle);
393 zfcp_erp_adapter_shutdown(adapter, 0, "fspse_4", req);
395 case FSF_PROT_LINK_DOWN:
396 zfcp_fsf_link_down_info_eval(req, "fspse_5",
397 &psq->link_down_info);
398 /* FIXME: reopening adapter now? better wait for link up */
399 zfcp_erp_adapter_reopen(adapter, 0, "fspse_6", req);
401 case FSF_PROT_REEST_QUEUE:
402 /* All ports should be marked as ready to run again */
403 zfcp_erp_modify_adapter_status(adapter, "fspse_7", NULL,
404 ZFCP_STATUS_COMMON_RUNNING,
406 zfcp_erp_adapter_reopen(adapter,
407 ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED |
408 ZFCP_STATUS_COMMON_ERP_FAILED,
412 dev_err(&adapter->ccw_device->dev,
413 "0x%x is not a valid transfer protocol status\n",
414 qtcb->prefix.prot_status);
415 zfcp_erp_adapter_shutdown(adapter, 0, "fspse_9", req);
417 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
421 * zfcp_fsf_req_complete - process completion of a FSF request
422 * @fsf_req: The FSF request that has been completed.
424 * When a request has been completed either from the FCP adapter,
425 * or it has been dismissed due to a queue shutdown, this function
426 * is called to process the completion status and trigger further
427 * events related to the FSF request.
429 static void zfcp_fsf_req_complete(struct zfcp_fsf_req *req)
431 if (unlikely(req->fsf_command == FSF_QTCB_UNSOLICITED_STATUS)) {
432 zfcp_fsf_status_read_handler(req);
436 del_timer(&req->timer);
437 zfcp_fsf_protstatus_eval(req);
438 zfcp_fsf_fsfstatus_eval(req);
442 zfcp_erp_notify(req->erp_action, 0);
444 if (likely(req->status & ZFCP_STATUS_FSFREQ_CLEANUP))
445 zfcp_fsf_req_free(req);
447 complete(&req->completion);
451 * zfcp_fsf_req_dismiss_all - dismiss all fsf requests
452 * @adapter: pointer to struct zfcp_adapter
454 * Never ever call this without shutting down the adapter first.
455 * Otherwise the adapter would continue using and corrupting s390 storage.
456 * Included BUG_ON() call to ensure this is done.
457 * ERP is supposed to be the only user of this function.
459 void zfcp_fsf_req_dismiss_all(struct zfcp_adapter *adapter)
461 struct zfcp_fsf_req *req, *tmp;
463 LIST_HEAD(remove_queue);
466 BUG_ON(atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP);
467 spin_lock_irqsave(&adapter->req_list_lock, flags);
468 for (i = 0; i < REQUEST_LIST_SIZE; i++)
469 list_splice_init(&adapter->req_list[i], &remove_queue);
470 spin_unlock_irqrestore(&adapter->req_list_lock, flags);
472 list_for_each_entry_safe(req, tmp, &remove_queue, list) {
473 list_del(&req->list);
474 req->status |= ZFCP_STATUS_FSFREQ_DISMISSED;
475 zfcp_fsf_req_complete(req);
479 static int zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req *req)
481 struct fsf_qtcb_bottom_config *bottom = &req->qtcb->bottom.config;
482 struct zfcp_adapter *adapter = req->adapter;
483 struct Scsi_Host *shost = adapter->scsi_host;
484 struct fc_els_flogi *nsp, *plogi;
486 /* adjust pointers for missing command code */
487 nsp = (struct fc_els_flogi *) ((u8 *)&bottom->nport_serv_param
489 plogi = (struct fc_els_flogi *) ((u8 *)&bottom->plogi_payload
493 memcpy(req->data, bottom, sizeof(*bottom));
495 fc_host_port_name(shost) = nsp->fl_wwpn;
496 fc_host_node_name(shost) = nsp->fl_wwnn;
497 fc_host_port_id(shost) = bottom->s_id & ZFCP_DID_MASK;
498 fc_host_speed(shost) = bottom->fc_link_speed;
499 fc_host_supported_classes(shost) = FC_COS_CLASS2 | FC_COS_CLASS3;
501 adapter->hydra_version = bottom->adapter_type;
502 adapter->timer_ticks = bottom->timer_interval;
504 if (fc_host_permanent_port_name(shost) == -1)
505 fc_host_permanent_port_name(shost) = fc_host_port_name(shost);
507 switch (bottom->fc_topology) {
509 adapter->peer_d_id = bottom->peer_d_id & ZFCP_DID_MASK;
510 adapter->peer_wwpn = plogi->fl_wwpn;
511 adapter->peer_wwnn = plogi->fl_wwnn;
512 fc_host_port_type(shost) = FC_PORTTYPE_PTP;
514 case FSF_TOPO_FABRIC:
515 fc_host_port_type(shost) = FC_PORTTYPE_NPORT;
518 fc_host_port_type(shost) = FC_PORTTYPE_NLPORT;
521 dev_err(&adapter->ccw_device->dev,
522 "Unknown or unsupported arbitrated loop "
523 "fibre channel topology detected\n");
524 zfcp_erp_adapter_shutdown(adapter, 0, "fsece_1", req);
531 static void zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *req)
533 struct zfcp_adapter *adapter = req->adapter;
534 struct fsf_qtcb *qtcb = req->qtcb;
535 struct fsf_qtcb_bottom_config *bottom = &qtcb->bottom.config;
536 struct Scsi_Host *shost = adapter->scsi_host;
538 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
541 adapter->fsf_lic_version = bottom->lic_version;
542 adapter->adapter_features = bottom->adapter_features;
543 adapter->connection_features = bottom->connection_features;
544 adapter->peer_wwpn = 0;
545 adapter->peer_wwnn = 0;
546 adapter->peer_d_id = 0;
548 switch (qtcb->header.fsf_status) {
550 if (zfcp_fsf_exchange_config_evaluate(req))
553 if (bottom->max_qtcb_size < sizeof(struct fsf_qtcb)) {
554 dev_err(&adapter->ccw_device->dev,
555 "FCP adapter maximum QTCB size (%d bytes) "
557 bottom->max_qtcb_size);
558 zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh1", req);
561 atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK,
564 case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE:
565 fc_host_node_name(shost) = 0;
566 fc_host_port_name(shost) = 0;
567 fc_host_port_id(shost) = 0;
568 fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN;
569 fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN;
570 adapter->hydra_version = 0;
572 atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK,
575 zfcp_fsf_link_down_info_eval(req, "fsecdh2",
576 &qtcb->header.fsf_status_qual.link_down_info);
579 zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh3", req);
583 if (adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT) {
584 adapter->hardware_version = bottom->hardware_version;
585 memcpy(fc_host_serial_number(shost), bottom->serial_number,
586 min(FC_SERIAL_NUMBER_SIZE, 17));
587 EBCASC(fc_host_serial_number(shost),
588 min(FC_SERIAL_NUMBER_SIZE, 17));
591 if (FSF_QTCB_CURRENT_VERSION < bottom->low_qtcb_version) {
592 dev_err(&adapter->ccw_device->dev,
593 "The FCP adapter only supports newer "
594 "control block versions\n");
595 zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh4", req);
598 if (FSF_QTCB_CURRENT_VERSION > bottom->high_qtcb_version) {
599 dev_err(&adapter->ccw_device->dev,
600 "The FCP adapter only supports older "
601 "control block versions\n");
602 zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh5", req);
606 static void zfcp_fsf_exchange_port_evaluate(struct zfcp_fsf_req *req)
608 struct zfcp_adapter *adapter = req->adapter;
609 struct fsf_qtcb_bottom_port *bottom = &req->qtcb->bottom.port;
610 struct Scsi_Host *shost = adapter->scsi_host;
613 memcpy(req->data, bottom, sizeof(*bottom));
615 if (adapter->connection_features & FSF_FEATURE_NPIV_MODE) {
616 fc_host_permanent_port_name(shost) = bottom->wwpn;
617 fc_host_port_type(shost) = FC_PORTTYPE_NPIV;
619 fc_host_permanent_port_name(shost) = fc_host_port_name(shost);
620 fc_host_maxframe_size(shost) = bottom->maximum_frame_size;
621 fc_host_supported_speeds(shost) = bottom->supported_speed;
624 static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *req)
626 struct fsf_qtcb *qtcb = req->qtcb;
628 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
631 switch (qtcb->header.fsf_status) {
633 zfcp_fsf_exchange_port_evaluate(req);
635 case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE:
636 zfcp_fsf_exchange_port_evaluate(req);
637 zfcp_fsf_link_down_info_eval(req, "fsepdh1",
638 &qtcb->header.fsf_status_qual.link_down_info);
643 static int zfcp_fsf_sbal_check(struct zfcp_qdio *qdio)
645 struct zfcp_qdio_queue *req_q = &qdio->req_q;
647 spin_lock_bh(&qdio->req_q_lock);
648 if (atomic_read(&req_q->count))
650 spin_unlock_bh(&qdio->req_q_lock);
654 static int zfcp_fsf_req_sbal_get(struct zfcp_qdio *qdio)
656 struct zfcp_adapter *adapter = qdio->adapter;
659 spin_unlock_bh(&qdio->req_q_lock);
660 ret = wait_event_interruptible_timeout(qdio->req_q_wq,
661 zfcp_fsf_sbal_check(qdio), 5 * HZ);
665 atomic_inc(&qdio->req_q_full);
666 /* assume hanging outbound queue, try queue recovery */
667 zfcp_erp_adapter_reopen(adapter, 0, "fsrsg_1", NULL);
670 spin_lock_bh(&qdio->req_q_lock);
674 static struct zfcp_fsf_req *zfcp_fsf_alloc(mempool_t *pool)
676 struct zfcp_fsf_req *req;
679 req = mempool_alloc(pool, GFP_ATOMIC);
681 req = kmalloc(sizeof(*req), GFP_ATOMIC);
686 memset(req, 0, sizeof(*req));
691 static struct fsf_qtcb *zfcp_qtcb_alloc(mempool_t *pool)
693 struct fsf_qtcb *qtcb;
696 qtcb = mempool_alloc(pool, GFP_ATOMIC);
698 qtcb = kmem_cache_alloc(zfcp_data.qtcb_cache, GFP_ATOMIC);
703 memset(qtcb, 0, sizeof(*qtcb));
707 static struct zfcp_fsf_req *zfcp_fsf_req_create(struct zfcp_qdio *qdio,
708 u32 fsf_cmd, mempool_t *pool)
710 struct qdio_buffer_element *sbale;
711 struct zfcp_qdio_queue *req_q = &qdio->req_q;
712 struct zfcp_adapter *adapter = qdio->adapter;
713 struct zfcp_fsf_req *req = zfcp_fsf_alloc(pool);
716 return ERR_PTR(-ENOMEM);
718 if (adapter->req_no == 0)
721 INIT_LIST_HEAD(&req->list);
722 init_timer(&req->timer);
723 init_completion(&req->completion);
725 req->adapter = adapter;
726 req->fsf_command = fsf_cmd;
727 req->req_id = adapter->req_no;
728 req->queue_req.sbal_number = 1;
729 req->queue_req.sbal_first = req_q->first;
730 req->queue_req.sbal_last = req_q->first;
731 req->queue_req.sbale_curr = 1;
733 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
734 sbale[0].addr = (void *) req->req_id;
735 sbale[0].flags |= SBAL_FLAGS0_COMMAND;
737 if (likely(fsf_cmd != FSF_QTCB_UNSOLICITED_STATUS)) {
739 req->qtcb = zfcp_qtcb_alloc(adapter->pool.qtcb_pool);
741 req->qtcb = zfcp_qtcb_alloc(NULL);
743 if (unlikely(!req->qtcb)) {
744 zfcp_fsf_req_free(req);
745 return ERR_PTR(-ENOMEM);
748 req->qtcb->prefix.req_seq_no = adapter->fsf_req_seq_no;
749 req->qtcb->prefix.req_id = req->req_id;
750 req->qtcb->prefix.ulp_info = 26;
751 req->qtcb->prefix.qtcb_type = fsf_qtcb_type[req->fsf_command];
752 req->qtcb->prefix.qtcb_version = FSF_QTCB_CURRENT_VERSION;
753 req->qtcb->header.req_handle = req->req_id;
754 req->qtcb->header.fsf_command = req->fsf_command;
755 req->seq_no = adapter->fsf_req_seq_no;
756 req->qtcb->prefix.req_seq_no = adapter->fsf_req_seq_no;
757 sbale[1].addr = (void *) req->qtcb;
758 sbale[1].length = sizeof(struct fsf_qtcb);
761 if (!(atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP)) {
762 zfcp_fsf_req_free(req);
763 return ERR_PTR(-EIO);
769 static int zfcp_fsf_req_send(struct zfcp_fsf_req *req)
771 struct zfcp_adapter *adapter = req->adapter;
772 struct zfcp_qdio *qdio = adapter->qdio;
775 int with_qtcb = (req->qtcb != NULL);
777 /* put allocated FSF request into hash table */
778 spin_lock_irqsave(&adapter->req_list_lock, flags);
779 idx = zfcp_reqlist_hash(req->req_id);
780 list_add_tail(&req->list, &adapter->req_list[idx]);
781 spin_unlock_irqrestore(&adapter->req_list_lock, flags);
783 req->queue_req.qdio_outb_usage = atomic_read(&qdio->req_q.count);
784 req->issued = get_clock();
785 if (zfcp_qdio_send(qdio, &req->queue_req)) {
786 del_timer(&req->timer);
787 spin_lock_irqsave(&adapter->req_list_lock, flags);
788 /* lookup request again, list might have changed */
789 if (zfcp_reqlist_find_safe(adapter, req))
790 zfcp_reqlist_remove(adapter, req);
791 spin_unlock_irqrestore(&adapter->req_list_lock, flags);
792 zfcp_erp_adapter_reopen(adapter, 0, "fsrs__1", req);
796 /* Don't increase for unsolicited status */
798 adapter->fsf_req_seq_no++;
805 * zfcp_fsf_status_read - send status read request
806 * @adapter: pointer to struct zfcp_adapter
807 * @req_flags: request flags
808 * Returns: 0 on success, ERROR otherwise
810 int zfcp_fsf_status_read(struct zfcp_qdio *qdio)
812 struct zfcp_adapter *adapter = qdio->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(&qdio->req_q_lock);
819 if (zfcp_fsf_req_sbal_get(qdio))
822 req = zfcp_fsf_req_create(qdio, FSF_QTCB_UNSOLICITED_STATUS,
823 adapter->pool.status_read_req);
825 retval = PTR_ERR(req);
829 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
830 sbale[2].flags |= SBAL_FLAGS_LAST_ENTRY;
831 req->queue_req.sbale_curr = 2;
833 sr_buf = mempool_alloc(adapter->pool.status_read_data, GFP_ATOMIC);
838 memset(sr_buf, 0, sizeof(*sr_buf));
840 sbale = zfcp_qdio_sbale_curr(qdio, &req->queue_req);
841 sbale->addr = (void *) sr_buf;
842 sbale->length = sizeof(*sr_buf);
844 retval = zfcp_fsf_req_send(req);
846 goto failed_req_send;
851 mempool_free(sr_buf, adapter->pool.status_read_data);
853 zfcp_fsf_req_free(req);
854 zfcp_dbf_hba_fsf_unsol("fail", adapter->dbf, NULL);
856 spin_unlock_bh(&qdio->req_q_lock);
860 static void zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req *req)
862 struct zfcp_unit *unit = req->data;
863 union fsf_status_qual *fsq = &req->qtcb->header.fsf_status_qual;
865 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
868 switch (req->qtcb->header.fsf_status) {
869 case FSF_PORT_HANDLE_NOT_VALID:
870 if (fsq->word[0] == fsq->word[1]) {
871 zfcp_erp_adapter_reopen(unit->port->adapter, 0,
873 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
876 case FSF_LUN_HANDLE_NOT_VALID:
877 if (fsq->word[0] == fsq->word[1]) {
878 zfcp_erp_port_reopen(unit->port, 0, "fsafch2", req);
879 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
882 case FSF_FCP_COMMAND_DOES_NOT_EXIST:
883 req->status |= ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED;
886 zfcp_erp_port_boxed(unit->port, "fsafch3", req);
887 req->status |= ZFCP_STATUS_FSFREQ_ERROR |
888 ZFCP_STATUS_FSFREQ_RETRY;
891 zfcp_erp_unit_boxed(unit, "fsafch4", req);
892 req->status |= ZFCP_STATUS_FSFREQ_ERROR |
893 ZFCP_STATUS_FSFREQ_RETRY;
895 case FSF_ADAPTER_STATUS_AVAILABLE:
896 switch (fsq->word[0]) {
897 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
898 zfcp_fc_test_link(unit->port);
900 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
901 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
906 req->status |= ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED;
912 * zfcp_fsf_abort_fcp_command - abort running SCSI command
913 * @old_req_id: unsigned long
914 * @unit: pointer to struct zfcp_unit
915 * Returns: pointer to struct zfcp_fsf_req
918 struct zfcp_fsf_req *zfcp_fsf_abort_fcp_command(unsigned long old_req_id,
919 struct zfcp_unit *unit)
921 struct qdio_buffer_element *sbale;
922 struct zfcp_fsf_req *req = NULL;
923 struct zfcp_qdio *qdio = unit->port->adapter->qdio;
925 spin_lock_bh(&qdio->req_q_lock);
926 if (zfcp_fsf_req_sbal_get(qdio))
928 req = zfcp_fsf_req_create(qdio, FSF_QTCB_ABORT_FCP_CMND,
929 qdio->adapter->pool.scsi_abort);
935 if (unlikely(!(atomic_read(&unit->status) &
936 ZFCP_STATUS_COMMON_UNBLOCKED)))
939 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
940 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
941 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
944 req->handler = zfcp_fsf_abort_fcp_command_handler;
945 req->qtcb->header.lun_handle = unit->handle;
946 req->qtcb->header.port_handle = unit->port->handle;
947 req->qtcb->bottom.support.req_handle = (u64) old_req_id;
949 zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT);
950 if (!zfcp_fsf_req_send(req))
954 zfcp_fsf_req_free(req);
957 spin_unlock_bh(&qdio->req_q_lock);
961 static void zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *req)
963 struct zfcp_adapter *adapter = req->adapter;
964 struct zfcp_send_ct *send_ct = req->data;
965 struct fsf_qtcb_header *header = &req->qtcb->header;
967 send_ct->status = -EINVAL;
969 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
972 switch (header->fsf_status) {
974 zfcp_dbf_san_ct_response(req);
977 case FSF_SERVICE_CLASS_NOT_SUPPORTED:
978 zfcp_fsf_class_not_supp(req);
980 case FSF_ADAPTER_STATUS_AVAILABLE:
981 switch (header->fsf_status_qual.word[0]){
982 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
983 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
984 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
988 case FSF_ACCESS_DENIED:
991 req->status |= ZFCP_STATUS_FSFREQ_ERROR |
992 ZFCP_STATUS_FSFREQ_RETRY;
994 case FSF_PORT_HANDLE_NOT_VALID:
995 zfcp_erp_adapter_reopen(adapter, 0, "fsscth1", req);
997 case FSF_GENERIC_COMMAND_REJECTED:
998 case FSF_PAYLOAD_SIZE_MISMATCH:
999 case FSF_REQUEST_SIZE_TOO_LARGE:
1000 case FSF_RESPONSE_SIZE_TOO_LARGE:
1001 case FSF_SBAL_MISMATCH:
1002 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1007 if (send_ct->handler)
1008 send_ct->handler(send_ct->handler_data);
1011 static void zfcp_fsf_setup_ct_els_unchained(struct qdio_buffer_element *sbale,
1012 struct scatterlist *sg_req,
1013 struct scatterlist *sg_resp)
1015 sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE_READ;
1016 sbale[2].addr = sg_virt(sg_req);
1017 sbale[2].length = sg_req->length;
1018 sbale[3].addr = sg_virt(sg_resp);
1019 sbale[3].length = sg_resp->length;
1020 sbale[3].flags |= SBAL_FLAGS_LAST_ENTRY;
1023 static int zfcp_fsf_one_sbal(struct scatterlist *sg)
1025 return sg_is_last(sg) && sg->length <= PAGE_SIZE;
1028 static int zfcp_fsf_setup_ct_els_sbals(struct zfcp_fsf_req *req,
1029 struct scatterlist *sg_req,
1030 struct scatterlist *sg_resp,
1033 struct zfcp_adapter *adapter = req->adapter;
1034 struct qdio_buffer_element *sbale = zfcp_qdio_sbale_req(adapter->qdio,
1036 u32 feat = adapter->adapter_features;
1039 if (!(feat & FSF_FEATURE_ELS_CT_CHAINED_SBALS)) {
1040 if (!zfcp_fsf_one_sbal(sg_req) || !zfcp_fsf_one_sbal(sg_resp))
1043 zfcp_fsf_setup_ct_els_unchained(sbale, sg_req, sg_resp);
1047 /* use single, unchained SBAL if it can hold the request */
1048 if (zfcp_fsf_one_sbal(sg_req) && zfcp_fsf_one_sbal(sg_resp)) {
1049 zfcp_fsf_setup_ct_els_unchained(sbale, sg_req, sg_resp);
1053 bytes = zfcp_qdio_sbals_from_sg(adapter->qdio, &req->queue_req,
1054 SBAL_FLAGS0_TYPE_WRITE_READ,
1058 req->qtcb->bottom.support.req_buf_length = bytes;
1059 req->queue_req.sbale_curr = ZFCP_LAST_SBALE_PER_SBAL;
1061 bytes = zfcp_qdio_sbals_from_sg(adapter->qdio, &req->queue_req,
1062 SBAL_FLAGS0_TYPE_WRITE_READ,
1063 sg_resp, max_sbals);
1064 req->qtcb->bottom.support.resp_buf_length = bytes;
1071 static int zfcp_fsf_setup_ct_els(struct zfcp_fsf_req *req,
1072 struct scatterlist *sg_req,
1073 struct scatterlist *sg_resp,
1077 unsigned int fcp_chan_timeout;
1079 ret = zfcp_fsf_setup_ct_els_sbals(req, sg_req, sg_resp, max_sbals);
1083 /* common settings for ct/gs and els requests */
1084 fcp_chan_timeout = 2 * FC_DEF_R_A_TOV / 1000;
1085 req->qtcb->bottom.support.service_class = FSF_CLASS_3;
1086 req->qtcb->bottom.support.timeout = fcp_chan_timeout;
1087 zfcp_fsf_start_timer(req, (fcp_chan_timeout + 10) * HZ);
1093 * zfcp_fsf_send_ct - initiate a Generic Service request (FC-GS)
1094 * @ct: pointer to struct zfcp_send_ct with data for request
1095 * @pool: if non-null this mempool is used to allocate struct zfcp_fsf_req
1097 int zfcp_fsf_send_ct(struct zfcp_send_ct *ct, mempool_t *pool)
1099 struct zfcp_wka_port *wka_port = ct->wka_port;
1100 struct zfcp_qdio *qdio = wka_port->adapter->qdio;
1101 struct zfcp_fsf_req *req;
1104 spin_lock_bh(&qdio->req_q_lock);
1105 if (zfcp_fsf_req_sbal_get(qdio))
1108 req = zfcp_fsf_req_create(qdio, FSF_QTCB_SEND_GENERIC, pool);
1115 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1116 ret = zfcp_fsf_setup_ct_els(req, ct->req, ct->resp,
1117 FSF_MAX_SBALS_PER_REQ);
1121 req->handler = zfcp_fsf_send_ct_handler;
1122 req->qtcb->header.port_handle = wka_port->handle;
1125 zfcp_dbf_san_ct_request(req);
1127 ret = zfcp_fsf_req_send(req);
1134 zfcp_fsf_req_free(req);
1136 spin_unlock_bh(&qdio->req_q_lock);
1140 static void zfcp_fsf_send_els_handler(struct zfcp_fsf_req *req)
1142 struct zfcp_send_els *send_els = req->data;
1143 struct zfcp_port *port = send_els->port;
1144 struct fsf_qtcb_header *header = &req->qtcb->header;
1146 send_els->status = -EINVAL;
1148 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1149 goto skip_fsfstatus;
1151 switch (header->fsf_status) {
1153 zfcp_dbf_san_els_response(req);
1154 send_els->status = 0;
1156 case FSF_SERVICE_CLASS_NOT_SUPPORTED:
1157 zfcp_fsf_class_not_supp(req);
1159 case FSF_ADAPTER_STATUS_AVAILABLE:
1160 switch (header->fsf_status_qual.word[0]){
1161 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1162 if (port && (send_els->ls_code != ELS_ADISC))
1163 zfcp_fc_test_link(port);
1165 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1166 case FSF_SQ_RETRY_IF_POSSIBLE:
1167 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1171 case FSF_ELS_COMMAND_REJECTED:
1172 case FSF_PAYLOAD_SIZE_MISMATCH:
1173 case FSF_REQUEST_SIZE_TOO_LARGE:
1174 case FSF_RESPONSE_SIZE_TOO_LARGE:
1176 case FSF_ACCESS_DENIED:
1178 zfcp_fsf_access_denied_port(req, port);
1180 case FSF_SBAL_MISMATCH:
1181 /* should never occure, avoided in zfcp_fsf_send_els */
1184 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1188 if (send_els->handler)
1189 send_els->handler(send_els->handler_data);
1193 * zfcp_fsf_send_els - initiate an ELS command (FC-FS)
1194 * @els: pointer to struct zfcp_send_els with data for the command
1196 int zfcp_fsf_send_els(struct zfcp_send_els *els)
1198 struct zfcp_fsf_req *req;
1199 struct zfcp_qdio *qdio = els->adapter->qdio;
1202 spin_lock_bh(&qdio->req_q_lock);
1203 if (zfcp_fsf_req_sbal_get(qdio))
1206 req = zfcp_fsf_req_create(qdio, FSF_QTCB_SEND_ELS, NULL);
1213 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1214 ret = zfcp_fsf_setup_ct_els(req, els->req, els->resp, 2);
1219 req->qtcb->bottom.support.d_id = els->d_id;
1220 req->handler = zfcp_fsf_send_els_handler;
1223 zfcp_dbf_san_els_request(req);
1225 ret = zfcp_fsf_req_send(req);
1232 zfcp_fsf_req_free(req);
1234 spin_unlock_bh(&qdio->req_q_lock);
1238 int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action)
1240 struct qdio_buffer_element *sbale;
1241 struct zfcp_fsf_req *req;
1242 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1245 spin_lock_bh(&qdio->req_q_lock);
1246 if (zfcp_fsf_req_sbal_get(qdio))
1249 req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_CONFIG_DATA,
1250 qdio->adapter->pool.erp_req);
1253 retval = PTR_ERR(req);
1257 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1258 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
1259 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
1260 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
1262 req->qtcb->bottom.config.feature_selection =
1264 FSF_FEATURE_LUN_SHARING |
1265 FSF_FEATURE_NOTIFICATION_LOST |
1266 FSF_FEATURE_UPDATE_ALERT;
1267 req->erp_action = erp_action;
1268 req->handler = zfcp_fsf_exchange_config_data_handler;
1269 erp_action->fsf_req = req;
1271 zfcp_fsf_start_erp_timer(req);
1272 retval = zfcp_fsf_req_send(req);
1274 zfcp_fsf_req_free(req);
1275 erp_action->fsf_req = NULL;
1278 spin_unlock_bh(&qdio->req_q_lock);
1282 int zfcp_fsf_exchange_config_data_sync(struct zfcp_qdio *qdio,
1283 struct fsf_qtcb_bottom_config *data)
1285 struct qdio_buffer_element *sbale;
1286 struct zfcp_fsf_req *req = NULL;
1289 spin_lock_bh(&qdio->req_q_lock);
1290 if (zfcp_fsf_req_sbal_get(qdio))
1293 req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_CONFIG_DATA, NULL);
1296 retval = PTR_ERR(req);
1300 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
1301 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
1302 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
1303 req->handler = zfcp_fsf_exchange_config_data_handler;
1305 req->qtcb->bottom.config.feature_selection =
1307 FSF_FEATURE_LUN_SHARING |
1308 FSF_FEATURE_NOTIFICATION_LOST |
1309 FSF_FEATURE_UPDATE_ALERT;
1314 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1315 retval = zfcp_fsf_req_send(req);
1316 spin_unlock_bh(&qdio->req_q_lock);
1318 wait_for_completion(&req->completion);
1320 zfcp_fsf_req_free(req);
1324 spin_unlock_bh(&qdio->req_q_lock);
1329 * zfcp_fsf_exchange_port_data - request information about local port
1330 * @erp_action: ERP action for the adapter for which port data is requested
1331 * Returns: 0 on success, error otherwise
1333 int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action)
1335 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1336 struct qdio_buffer_element *sbale;
1337 struct zfcp_fsf_req *req;
1340 if (!(qdio->adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT))
1343 spin_lock_bh(&qdio->req_q_lock);
1344 if (zfcp_fsf_req_sbal_get(qdio))
1347 req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_PORT_DATA,
1348 qdio->adapter->pool.erp_req);
1351 retval = PTR_ERR(req);
1355 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1356 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
1357 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
1358 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
1360 req->handler = zfcp_fsf_exchange_port_data_handler;
1361 req->erp_action = erp_action;
1362 erp_action->fsf_req = req;
1364 zfcp_fsf_start_erp_timer(req);
1365 retval = zfcp_fsf_req_send(req);
1367 zfcp_fsf_req_free(req);
1368 erp_action->fsf_req = NULL;
1371 spin_unlock_bh(&qdio->req_q_lock);
1376 * zfcp_fsf_exchange_port_data_sync - request information about local port
1377 * @qdio: pointer to struct zfcp_qdio
1378 * @data: pointer to struct fsf_qtcb_bottom_port
1379 * Returns: 0 on success, error otherwise
1381 int zfcp_fsf_exchange_port_data_sync(struct zfcp_qdio *qdio,
1382 struct fsf_qtcb_bottom_port *data)
1384 struct qdio_buffer_element *sbale;
1385 struct zfcp_fsf_req *req = NULL;
1388 if (!(qdio->adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT))
1391 spin_lock_bh(&qdio->req_q_lock);
1392 if (zfcp_fsf_req_sbal_get(qdio))
1395 req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_PORT_DATA, NULL);
1398 retval = PTR_ERR(req);
1405 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
1406 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
1407 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
1409 req->handler = zfcp_fsf_exchange_port_data_handler;
1410 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1411 retval = zfcp_fsf_req_send(req);
1412 spin_unlock_bh(&qdio->req_q_lock);
1415 wait_for_completion(&req->completion);
1417 zfcp_fsf_req_free(req);
1422 spin_unlock_bh(&qdio->req_q_lock);
1426 static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req *req)
1428 struct zfcp_port *port = req->data;
1429 struct fsf_qtcb_header *header = &req->qtcb->header;
1430 struct fc_els_flogi *plogi;
1432 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1435 switch (header->fsf_status) {
1436 case FSF_PORT_ALREADY_OPEN:
1438 case FSF_ACCESS_DENIED:
1439 zfcp_fsf_access_denied_port(req, port);
1441 case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED:
1442 dev_warn(&req->adapter->ccw_device->dev,
1443 "Not enough FCP adapter resources to open "
1444 "remote port 0x%016Lx\n",
1445 (unsigned long long)port->wwpn);
1446 zfcp_erp_port_failed(port, "fsoph_1", req);
1447 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1449 case FSF_ADAPTER_STATUS_AVAILABLE:
1450 switch (header->fsf_status_qual.word[0]) {
1451 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1452 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1453 case FSF_SQ_NO_RETRY_POSSIBLE:
1454 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1459 port->handle = header->port_handle;
1460 atomic_set_mask(ZFCP_STATUS_COMMON_OPEN |
1461 ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
1462 atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED |
1463 ZFCP_STATUS_COMMON_ACCESS_BOXED,
1465 /* check whether D_ID has changed during open */
1467 * FIXME: This check is not airtight, as the FCP channel does
1468 * not monitor closures of target port connections caused on
1469 * the remote side. Thus, they might miss out on invalidating
1470 * locally cached WWPNs (and other N_Port parameters) of gone
1471 * target ports. So, our heroic attempt to make things safe
1472 * could be undermined by 'open port' response data tagged with
1473 * obsolete WWPNs. Another reason to monitor potential
1474 * connection closures ourself at least (by interpreting
1475 * incoming ELS' and unsolicited status). It just crosses my
1476 * mind that one should be able to cross-check by means of
1477 * another GID_PN straight after a port has been opened.
1478 * Alternately, an ADISC/PDISC ELS should suffice, as well.
1480 plogi = (struct fc_els_flogi *) req->qtcb->bottom.support.els;
1481 if (req->qtcb->bottom.support.els1_length >=
1483 zfcp_fc_plogi_evaluate(port, plogi);
1485 case FSF_UNKNOWN_OP_SUBTYPE:
1486 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1491 put_device(&port->sysfs_device);
1495 * zfcp_fsf_open_port - create and send open port request
1496 * @erp_action: pointer to struct zfcp_erp_action
1497 * Returns: 0 on success, error otherwise
1499 int zfcp_fsf_open_port(struct zfcp_erp_action *erp_action)
1501 struct qdio_buffer_element *sbale;
1502 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1503 struct zfcp_port *port = erp_action->port;
1504 struct zfcp_fsf_req *req;
1507 spin_lock_bh(&qdio->req_q_lock);
1508 if (zfcp_fsf_req_sbal_get(qdio))
1511 req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_PORT_WITH_DID,
1512 qdio->adapter->pool.erp_req);
1515 retval = PTR_ERR(req);
1519 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1520 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
1521 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
1522 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
1524 req->handler = zfcp_fsf_open_port_handler;
1525 req->qtcb->bottom.support.d_id = port->d_id;
1527 req->erp_action = erp_action;
1528 erp_action->fsf_req = req;
1529 get_device(&port->sysfs_device);
1531 zfcp_fsf_start_erp_timer(req);
1532 retval = zfcp_fsf_req_send(req);
1534 zfcp_fsf_req_free(req);
1535 erp_action->fsf_req = NULL;
1536 put_device(&port->sysfs_device);
1539 spin_unlock_bh(&qdio->req_q_lock);
1543 static void zfcp_fsf_close_port_handler(struct zfcp_fsf_req *req)
1545 struct zfcp_port *port = req->data;
1547 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1550 switch (req->qtcb->header.fsf_status) {
1551 case FSF_PORT_HANDLE_NOT_VALID:
1552 zfcp_erp_adapter_reopen(port->adapter, 0, "fscph_1", req);
1553 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1555 case FSF_ADAPTER_STATUS_AVAILABLE:
1558 zfcp_erp_modify_port_status(port, "fscph_2", req,
1559 ZFCP_STATUS_COMMON_OPEN,
1566 * zfcp_fsf_close_port - create and send close port request
1567 * @erp_action: pointer to struct zfcp_erp_action
1568 * Returns: 0 on success, error otherwise
1570 int zfcp_fsf_close_port(struct zfcp_erp_action *erp_action)
1572 struct qdio_buffer_element *sbale;
1573 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1574 struct zfcp_fsf_req *req;
1577 spin_lock_bh(&qdio->req_q_lock);
1578 if (zfcp_fsf_req_sbal_get(qdio))
1581 req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PORT,
1582 qdio->adapter->pool.erp_req);
1585 retval = PTR_ERR(req);
1589 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1590 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
1591 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
1592 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
1594 req->handler = zfcp_fsf_close_port_handler;
1595 req->data = erp_action->port;
1596 req->erp_action = erp_action;
1597 req->qtcb->header.port_handle = erp_action->port->handle;
1598 erp_action->fsf_req = req;
1600 zfcp_fsf_start_erp_timer(req);
1601 retval = zfcp_fsf_req_send(req);
1603 zfcp_fsf_req_free(req);
1604 erp_action->fsf_req = NULL;
1607 spin_unlock_bh(&qdio->req_q_lock);
1611 static void zfcp_fsf_open_wka_port_handler(struct zfcp_fsf_req *req)
1613 struct zfcp_wka_port *wka_port = req->data;
1614 struct fsf_qtcb_header *header = &req->qtcb->header;
1616 if (req->status & ZFCP_STATUS_FSFREQ_ERROR) {
1617 wka_port->status = ZFCP_WKA_PORT_OFFLINE;
1621 switch (header->fsf_status) {
1622 case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED:
1623 dev_warn(&req->adapter->ccw_device->dev,
1624 "Opening WKA port 0x%x failed\n", wka_port->d_id);
1626 case FSF_ADAPTER_STATUS_AVAILABLE:
1627 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1629 case FSF_ACCESS_DENIED:
1630 wka_port->status = ZFCP_WKA_PORT_OFFLINE;
1633 wka_port->handle = header->port_handle;
1635 case FSF_PORT_ALREADY_OPEN:
1636 wka_port->status = ZFCP_WKA_PORT_ONLINE;
1639 wake_up(&wka_port->completion_wq);
1643 * zfcp_fsf_open_wka_port - create and send open wka-port request
1644 * @wka_port: pointer to struct zfcp_wka_port
1645 * Returns: 0 on success, error otherwise
1647 int zfcp_fsf_open_wka_port(struct zfcp_wka_port *wka_port)
1649 struct qdio_buffer_element *sbale;
1650 struct zfcp_qdio *qdio = wka_port->adapter->qdio;
1651 struct zfcp_fsf_req *req;
1654 spin_lock_bh(&qdio->req_q_lock);
1655 if (zfcp_fsf_req_sbal_get(qdio))
1658 req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_PORT_WITH_DID,
1659 qdio->adapter->pool.erp_req);
1661 if (unlikely(IS_ERR(req))) {
1662 retval = PTR_ERR(req);
1666 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1667 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
1668 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
1669 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
1671 req->handler = zfcp_fsf_open_wka_port_handler;
1672 req->qtcb->bottom.support.d_id = wka_port->d_id;
1673 req->data = wka_port;
1675 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1676 retval = zfcp_fsf_req_send(req);
1678 zfcp_fsf_req_free(req);
1680 spin_unlock_bh(&qdio->req_q_lock);
1684 static void zfcp_fsf_close_wka_port_handler(struct zfcp_fsf_req *req)
1686 struct zfcp_wka_port *wka_port = req->data;
1688 if (req->qtcb->header.fsf_status == FSF_PORT_HANDLE_NOT_VALID) {
1689 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1690 zfcp_erp_adapter_reopen(wka_port->adapter, 0, "fscwph1", req);
1693 wka_port->status = ZFCP_WKA_PORT_OFFLINE;
1694 wake_up(&wka_port->completion_wq);
1698 * zfcp_fsf_close_wka_port - create and send close wka port request
1699 * @erp_action: pointer to struct zfcp_erp_action
1700 * Returns: 0 on success, error otherwise
1702 int zfcp_fsf_close_wka_port(struct zfcp_wka_port *wka_port)
1704 struct qdio_buffer_element *sbale;
1705 struct zfcp_qdio *qdio = wka_port->adapter->qdio;
1706 struct zfcp_fsf_req *req;
1709 spin_lock_bh(&qdio->req_q_lock);
1710 if (zfcp_fsf_req_sbal_get(qdio))
1713 req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PORT,
1714 qdio->adapter->pool.erp_req);
1716 if (unlikely(IS_ERR(req))) {
1717 retval = PTR_ERR(req);
1721 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1722 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
1723 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
1724 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
1726 req->handler = zfcp_fsf_close_wka_port_handler;
1727 req->data = wka_port;
1728 req->qtcb->header.port_handle = wka_port->handle;
1730 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1731 retval = zfcp_fsf_req_send(req);
1733 zfcp_fsf_req_free(req);
1735 spin_unlock_bh(&qdio->req_q_lock);
1739 static void zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *req)
1741 struct zfcp_port *port = req->data;
1742 struct fsf_qtcb_header *header = &req->qtcb->header;
1743 struct zfcp_unit *unit;
1745 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1748 switch (header->fsf_status) {
1749 case FSF_PORT_HANDLE_NOT_VALID:
1750 zfcp_erp_adapter_reopen(port->adapter, 0, "fscpph1", req);
1751 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1753 case FSF_ACCESS_DENIED:
1754 zfcp_fsf_access_denied_port(req, port);
1756 case FSF_PORT_BOXED:
1757 /* can't use generic zfcp_erp_modify_port_status because
1758 * ZFCP_STATUS_COMMON_OPEN must not be reset for the port */
1759 atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
1760 read_lock(&port->unit_list_lock);
1761 list_for_each_entry(unit, &port->unit_list, list)
1762 atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN,
1764 read_unlock(&port->unit_list_lock);
1765 zfcp_erp_port_boxed(port, "fscpph2", req);
1766 req->status |= ZFCP_STATUS_FSFREQ_ERROR |
1767 ZFCP_STATUS_FSFREQ_RETRY;
1770 case FSF_ADAPTER_STATUS_AVAILABLE:
1771 switch (header->fsf_status_qual.word[0]) {
1772 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1774 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1775 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1780 /* can't use generic zfcp_erp_modify_port_status because
1781 * ZFCP_STATUS_COMMON_OPEN must not be reset for the port
1783 atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
1784 read_lock(&port->unit_list_lock);
1785 list_for_each_entry(unit, &port->unit_list, list)
1786 atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN,
1788 read_unlock(&port->unit_list_lock);
1794 * zfcp_fsf_close_physical_port - close physical port
1795 * @erp_action: pointer to struct zfcp_erp_action
1796 * Returns: 0 on success
1798 int zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action)
1800 struct qdio_buffer_element *sbale;
1801 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1802 struct zfcp_fsf_req *req;
1805 spin_lock_bh(&qdio->req_q_lock);
1806 if (zfcp_fsf_req_sbal_get(qdio))
1809 req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PHYSICAL_PORT,
1810 qdio->adapter->pool.erp_req);
1813 retval = PTR_ERR(req);
1817 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1818 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
1819 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
1820 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
1822 req->data = erp_action->port;
1823 req->qtcb->header.port_handle = erp_action->port->handle;
1824 req->erp_action = erp_action;
1825 req->handler = zfcp_fsf_close_physical_port_handler;
1826 erp_action->fsf_req = req;
1828 zfcp_fsf_start_erp_timer(req);
1829 retval = zfcp_fsf_req_send(req);
1831 zfcp_fsf_req_free(req);
1832 erp_action->fsf_req = NULL;
1835 spin_unlock_bh(&qdio->req_q_lock);
1839 static void zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *req)
1841 struct zfcp_adapter *adapter = req->adapter;
1842 struct zfcp_unit *unit = req->data;
1843 struct fsf_qtcb_header *header = &req->qtcb->header;
1844 struct fsf_qtcb_bottom_support *bottom = &req->qtcb->bottom.support;
1845 struct fsf_queue_designator *queue_designator =
1846 &header->fsf_status_qual.fsf_queue_designator;
1847 int exclusive, readwrite;
1849 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1852 atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED |
1853 ZFCP_STATUS_COMMON_ACCESS_BOXED |
1854 ZFCP_STATUS_UNIT_SHARED |
1855 ZFCP_STATUS_UNIT_READONLY,
1858 switch (header->fsf_status) {
1860 case FSF_PORT_HANDLE_NOT_VALID:
1861 zfcp_erp_adapter_reopen(unit->port->adapter, 0, "fsouh_1", req);
1863 case FSF_LUN_ALREADY_OPEN:
1865 case FSF_ACCESS_DENIED:
1866 zfcp_fsf_access_denied_unit(req, unit);
1867 atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED, &unit->status);
1868 atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status);
1870 case FSF_PORT_BOXED:
1871 zfcp_erp_port_boxed(unit->port, "fsouh_2", req);
1872 req->status |= ZFCP_STATUS_FSFREQ_ERROR |
1873 ZFCP_STATUS_FSFREQ_RETRY;
1875 case FSF_LUN_SHARING_VIOLATION:
1876 if (header->fsf_status_qual.word[0])
1877 dev_warn(&adapter->ccw_device->dev,
1878 "LUN 0x%Lx on port 0x%Lx is already in "
1879 "use by CSS%d, MIF Image ID %x\n",
1880 (unsigned long long)unit->fcp_lun,
1881 (unsigned long long)unit->port->wwpn,
1882 queue_designator->cssid,
1883 queue_designator->hla);
1885 zfcp_act_eval_err(adapter,
1886 header->fsf_status_qual.word[2]);
1887 zfcp_erp_unit_access_denied(unit, "fsouh_3", req);
1888 atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED, &unit->status);
1889 atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status);
1890 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1892 case FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED:
1893 dev_warn(&adapter->ccw_device->dev,
1894 "No handle is available for LUN "
1895 "0x%016Lx on port 0x%016Lx\n",
1896 (unsigned long long)unit->fcp_lun,
1897 (unsigned long long)unit->port->wwpn);
1898 zfcp_erp_unit_failed(unit, "fsouh_4", req);
1900 case FSF_INVALID_COMMAND_OPTION:
1901 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1903 case FSF_ADAPTER_STATUS_AVAILABLE:
1904 switch (header->fsf_status_qual.word[0]) {
1905 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1906 zfcp_fc_test_link(unit->port);
1908 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1909 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1915 unit->handle = header->lun_handle;
1916 atomic_set_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status);
1918 if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE) &&
1919 (adapter->adapter_features & FSF_FEATURE_LUN_SHARING) &&
1920 !zfcp_ccw_priv_sch(adapter)) {
1921 exclusive = (bottom->lun_access_info &
1922 FSF_UNIT_ACCESS_EXCLUSIVE);
1923 readwrite = (bottom->lun_access_info &
1924 FSF_UNIT_ACCESS_OUTBOUND_TRANSFER);
1927 atomic_set_mask(ZFCP_STATUS_UNIT_SHARED,
1931 atomic_set_mask(ZFCP_STATUS_UNIT_READONLY,
1933 dev_info(&adapter->ccw_device->dev,
1934 "SCSI device at LUN 0x%016Lx on port "
1935 "0x%016Lx opened read-only\n",
1936 (unsigned long long)unit->fcp_lun,
1937 (unsigned long long)unit->port->wwpn);
1940 if (exclusive && !readwrite) {
1941 dev_err(&adapter->ccw_device->dev,
1942 "Exclusive read-only access not "
1943 "supported (unit 0x%016Lx, "
1945 (unsigned long long)unit->fcp_lun,
1946 (unsigned long long)unit->port->wwpn);
1947 zfcp_erp_unit_failed(unit, "fsouh_5", req);
1948 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1949 zfcp_erp_unit_shutdown(unit, 0, "fsouh_6", req);
1950 } else if (!exclusive && readwrite) {
1951 dev_err(&adapter->ccw_device->dev,
1952 "Shared read-write access not "
1953 "supported (unit 0x%016Lx, port "
1955 (unsigned long long)unit->fcp_lun,
1956 (unsigned long long)unit->port->wwpn);
1957 zfcp_erp_unit_failed(unit, "fsouh_7", req);
1958 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1959 zfcp_erp_unit_shutdown(unit, 0, "fsouh_8", req);
1967 * zfcp_fsf_open_unit - open unit
1968 * @erp_action: pointer to struct zfcp_erp_action
1969 * Returns: 0 on success, error otherwise
1971 int zfcp_fsf_open_unit(struct zfcp_erp_action *erp_action)
1973 struct qdio_buffer_element *sbale;
1974 struct zfcp_adapter *adapter = erp_action->adapter;
1975 struct zfcp_qdio *qdio = adapter->qdio;
1976 struct zfcp_fsf_req *req;
1979 spin_lock_bh(&qdio->req_q_lock);
1980 if (zfcp_fsf_req_sbal_get(qdio))
1983 req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_LUN,
1984 adapter->pool.erp_req);
1987 retval = PTR_ERR(req);
1991 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1992 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
1993 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
1994 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
1996 req->qtcb->header.port_handle = erp_action->port->handle;
1997 req->qtcb->bottom.support.fcp_lun = erp_action->unit->fcp_lun;
1998 req->handler = zfcp_fsf_open_unit_handler;
1999 req->data = erp_action->unit;
2000 req->erp_action = erp_action;
2001 erp_action->fsf_req = req;
2003 if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE))
2004 req->qtcb->bottom.support.option = FSF_OPEN_LUN_SUPPRESS_BOXING;
2006 zfcp_fsf_start_erp_timer(req);
2007 retval = zfcp_fsf_req_send(req);
2009 zfcp_fsf_req_free(req);
2010 erp_action->fsf_req = NULL;
2013 spin_unlock_bh(&qdio->req_q_lock);
2017 static void zfcp_fsf_close_unit_handler(struct zfcp_fsf_req *req)
2019 struct zfcp_unit *unit = req->data;
2021 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
2024 switch (req->qtcb->header.fsf_status) {
2025 case FSF_PORT_HANDLE_NOT_VALID:
2026 zfcp_erp_adapter_reopen(unit->port->adapter, 0, "fscuh_1", req);
2027 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2029 case FSF_LUN_HANDLE_NOT_VALID:
2030 zfcp_erp_port_reopen(unit->port, 0, "fscuh_2", req);
2031 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2033 case FSF_PORT_BOXED:
2034 zfcp_erp_port_boxed(unit->port, "fscuh_3", req);
2035 req->status |= ZFCP_STATUS_FSFREQ_ERROR |
2036 ZFCP_STATUS_FSFREQ_RETRY;
2038 case FSF_ADAPTER_STATUS_AVAILABLE:
2039 switch (req->qtcb->header.fsf_status_qual.word[0]) {
2040 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
2041 zfcp_fc_test_link(unit->port);
2043 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
2044 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2049 atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status);
2055 * zfcp_fsf_close_unit - close zfcp unit
2056 * @erp_action: pointer to struct zfcp_unit
2057 * Returns: 0 on success, error otherwise
2059 int zfcp_fsf_close_unit(struct zfcp_erp_action *erp_action)
2061 struct qdio_buffer_element *sbale;
2062 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
2063 struct zfcp_fsf_req *req;
2066 spin_lock_bh(&qdio->req_q_lock);
2067 if (zfcp_fsf_req_sbal_get(qdio))
2070 req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_LUN,
2071 qdio->adapter->pool.erp_req);
2074 retval = PTR_ERR(req);
2078 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
2079 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
2080 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
2081 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
2083 req->qtcb->header.port_handle = erp_action->port->handle;
2084 req->qtcb->header.lun_handle = erp_action->unit->handle;
2085 req->handler = zfcp_fsf_close_unit_handler;
2086 req->data = erp_action->unit;
2087 req->erp_action = erp_action;
2088 erp_action->fsf_req = req;
2090 zfcp_fsf_start_erp_timer(req);
2091 retval = zfcp_fsf_req_send(req);
2093 zfcp_fsf_req_free(req);
2094 erp_action->fsf_req = NULL;
2097 spin_unlock_bh(&qdio->req_q_lock);
2101 static void zfcp_fsf_update_lat(struct fsf_latency_record *lat_rec, u32 lat)
2103 lat_rec->sum += lat;
2104 lat_rec->min = min(lat_rec->min, lat);
2105 lat_rec->max = max(lat_rec->max, lat);
2108 static void zfcp_fsf_req_trace(struct zfcp_fsf_req *req, struct scsi_cmnd *scsi)
2110 struct fsf_qual_latency_info *lat_in;
2111 struct latency_cont *lat = NULL;
2112 struct zfcp_unit *unit = req->unit;
2113 struct zfcp_blk_drv_data blktrc;
2114 int ticks = req->adapter->timer_ticks;
2116 lat_in = &req->qtcb->prefix.prot_status_qual.latency_info;
2119 blktrc.magic = ZFCP_BLK_DRV_DATA_MAGIC;
2120 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
2121 blktrc.flags |= ZFCP_BLK_REQ_ERROR;
2122 blktrc.inb_usage = req->queue_req.qdio_inb_usage;
2123 blktrc.outb_usage = req->queue_req.qdio_outb_usage;
2125 if (req->adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA) {
2126 blktrc.flags |= ZFCP_BLK_LAT_VALID;
2127 blktrc.channel_lat = lat_in->channel_lat * ticks;
2128 blktrc.fabric_lat = lat_in->fabric_lat * ticks;
2130 switch (req->qtcb->bottom.io.data_direction) {
2131 case FSF_DATADIR_READ:
2132 lat = &unit->latencies.read;
2134 case FSF_DATADIR_WRITE:
2135 lat = &unit->latencies.write;
2137 case FSF_DATADIR_CMND:
2138 lat = &unit->latencies.cmd;
2143 spin_lock(&unit->latencies.lock);
2144 zfcp_fsf_update_lat(&lat->channel, lat_in->channel_lat);
2145 zfcp_fsf_update_lat(&lat->fabric, lat_in->fabric_lat);
2147 spin_unlock(&unit->latencies.lock);
2151 blk_add_driver_data(scsi->request->q, scsi->request, &blktrc,
2155 static void zfcp_fsf_send_fcp_command_task_handler(struct zfcp_fsf_req *req)
2157 struct scsi_cmnd *scpnt;
2158 struct fcp_resp_with_ext *fcp_rsp;
2159 unsigned long flags;
2161 read_lock_irqsave(&req->adapter->abort_lock, flags);
2164 if (unlikely(!scpnt)) {
2165 read_unlock_irqrestore(&req->adapter->abort_lock, flags);
2169 if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ABORTED)) {
2170 set_host_byte(scpnt, DID_SOFT_ERROR);
2171 goto skip_fsfstatus;
2174 if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) {
2175 set_host_byte(scpnt, DID_ERROR);
2176 goto skip_fsfstatus;
2179 fcp_rsp = (struct fcp_resp_with_ext *) &req->qtcb->bottom.io.fcp_rsp;
2180 zfcp_fc_eval_fcp_rsp(fcp_rsp, scpnt);
2182 zfcp_fsf_req_trace(req, scpnt);
2185 if (scpnt->result != 0)
2186 zfcp_dbf_scsi_result("erro", 3, req->adapter->dbf, scpnt, req);
2187 else if (scpnt->retries > 0)
2188 zfcp_dbf_scsi_result("retr", 4, req->adapter->dbf, scpnt, req);
2190 zfcp_dbf_scsi_result("norm", 6, req->adapter->dbf, scpnt, req);
2192 scpnt->host_scribble = NULL;
2193 (scpnt->scsi_done) (scpnt);
2195 * We must hold this lock until scsi_done has been called.
2196 * Otherwise we may call scsi_done after abort regarding this
2197 * command has completed.
2198 * Note: scsi_done must not block!
2200 read_unlock_irqrestore(&req->adapter->abort_lock, flags);
2203 static void zfcp_fsf_send_fcp_ctm_handler(struct zfcp_fsf_req *req)
2205 struct fcp_resp_with_ext *fcp_rsp;
2206 struct fcp_resp_rsp_info *rsp_info;
2208 fcp_rsp = (struct fcp_resp_with_ext *) &req->qtcb->bottom.io.fcp_rsp;
2209 rsp_info = (struct fcp_resp_rsp_info *) &fcp_rsp[1];
2211 if ((rsp_info->rsp_code != FCP_TMF_CMPL) ||
2212 (req->status & ZFCP_STATUS_FSFREQ_ERROR))
2213 req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED;
2217 static void zfcp_fsf_send_fcp_command_handler(struct zfcp_fsf_req *req)
2219 struct zfcp_unit *unit;
2220 struct fsf_qtcb_header *header = &req->qtcb->header;
2222 if (unlikely(req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT))
2227 if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR))
2228 goto skip_fsfstatus;
2230 switch (header->fsf_status) {
2231 case FSF_HANDLE_MISMATCH:
2232 case FSF_PORT_HANDLE_NOT_VALID:
2233 zfcp_erp_adapter_reopen(unit->port->adapter, 0, "fssfch1", req);
2234 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2236 case FSF_FCPLUN_NOT_VALID:
2237 case FSF_LUN_HANDLE_NOT_VALID:
2238 zfcp_erp_port_reopen(unit->port, 0, "fssfch2", req);
2239 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2241 case FSF_SERVICE_CLASS_NOT_SUPPORTED:
2242 zfcp_fsf_class_not_supp(req);
2244 case FSF_ACCESS_DENIED:
2245 zfcp_fsf_access_denied_unit(req, unit);
2247 case FSF_DIRECTION_INDICATOR_NOT_VALID:
2248 dev_err(&req->adapter->ccw_device->dev,
2249 "Incorrect direction %d, unit 0x%016Lx on port "
2250 "0x%016Lx closed\n",
2251 req->qtcb->bottom.io.data_direction,
2252 (unsigned long long)unit->fcp_lun,
2253 (unsigned long long)unit->port->wwpn);
2254 zfcp_erp_adapter_shutdown(unit->port->adapter, 0, "fssfch3",
2256 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2258 case FSF_CMND_LENGTH_NOT_VALID:
2259 dev_err(&req->adapter->ccw_device->dev,
2260 "Incorrect CDB length %d, unit 0x%016Lx on "
2261 "port 0x%016Lx closed\n",
2262 req->qtcb->bottom.io.fcp_cmnd_length,
2263 (unsigned long long)unit->fcp_lun,
2264 (unsigned long long)unit->port->wwpn);
2265 zfcp_erp_adapter_shutdown(unit->port->adapter, 0, "fssfch4",
2267 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2269 case FSF_PORT_BOXED:
2270 zfcp_erp_port_boxed(unit->port, "fssfch5", req);
2271 req->status |= ZFCP_STATUS_FSFREQ_ERROR |
2272 ZFCP_STATUS_FSFREQ_RETRY;
2275 zfcp_erp_unit_boxed(unit, "fssfch6", req);
2276 req->status |= ZFCP_STATUS_FSFREQ_ERROR |
2277 ZFCP_STATUS_FSFREQ_RETRY;
2279 case FSF_ADAPTER_STATUS_AVAILABLE:
2280 if (header->fsf_status_qual.word[0] ==
2281 FSF_SQ_INVOKE_LINK_TEST_PROCEDURE)
2282 zfcp_fc_test_link(unit->port);
2283 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2287 if (req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT)
2288 zfcp_fsf_send_fcp_ctm_handler(req);
2290 zfcp_fsf_send_fcp_command_task_handler(req);
2292 put_device(&unit->sysfs_device);
2297 * zfcp_fsf_send_fcp_command_task - initiate an FCP command (for a SCSI command)
2298 * @unit: unit where command is sent to
2299 * @scsi_cmnd: scsi command to be sent
2301 int zfcp_fsf_send_fcp_command_task(struct zfcp_unit *unit,
2302 struct scsi_cmnd *scsi_cmnd)
2304 struct zfcp_fsf_req *req;
2305 struct fcp_cmnd *fcp_cmnd;
2306 unsigned int sbtype = SBAL_FLAGS0_TYPE_READ;
2307 int real_bytes, retval = -EIO;
2308 struct zfcp_adapter *adapter = unit->port->adapter;
2309 struct zfcp_qdio *qdio = adapter->qdio;
2311 if (unlikely(!(atomic_read(&unit->status) &
2312 ZFCP_STATUS_COMMON_UNBLOCKED)))
2315 spin_lock(&qdio->req_q_lock);
2316 if (atomic_read(&qdio->req_q.count) <= 0) {
2317 atomic_inc(&qdio->req_q_full);
2321 req = zfcp_fsf_req_create(qdio, FSF_QTCB_FCP_CMND,
2322 adapter->pool.scsi_req);
2325 retval = PTR_ERR(req);
2329 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
2330 get_device(&unit->sysfs_device);
2332 req->data = scsi_cmnd;
2333 req->handler = zfcp_fsf_send_fcp_command_handler;
2334 req->qtcb->header.lun_handle = unit->handle;
2335 req->qtcb->header.port_handle = unit->port->handle;
2336 req->qtcb->bottom.io.service_class = FSF_CLASS_3;
2337 req->qtcb->bottom.io.fcp_cmnd_length = FCP_CMND_LEN;
2339 scsi_cmnd->host_scribble = (unsigned char *) req->req_id;
2342 * set depending on data direction:
2343 * data direction bits in SBALE (SB Type)
2344 * data direction bits in QTCB
2346 switch (scsi_cmnd->sc_data_direction) {
2348 req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND;
2350 case DMA_FROM_DEVICE:
2351 req->qtcb->bottom.io.data_direction = FSF_DATADIR_READ;
2354 req->qtcb->bottom.io.data_direction = FSF_DATADIR_WRITE;
2355 sbtype = SBAL_FLAGS0_TYPE_WRITE;
2357 case DMA_BIDIRECTIONAL:
2358 goto failed_scsi_cmnd;
2361 fcp_cmnd = (struct fcp_cmnd *) &req->qtcb->bottom.io.fcp_cmnd;
2362 zfcp_fc_scsi_to_fcp(fcp_cmnd, scsi_cmnd);
2364 real_bytes = zfcp_qdio_sbals_from_sg(qdio, &req->queue_req, sbtype,
2365 scsi_sglist(scsi_cmnd),
2366 FSF_MAX_SBALS_PER_REQ);
2367 if (unlikely(real_bytes < 0)) {
2368 if (req->queue_req.sbal_number >= FSF_MAX_SBALS_PER_REQ) {
2369 dev_err(&adapter->ccw_device->dev,
2370 "Oversize data package, unit 0x%016Lx "
2371 "on port 0x%016Lx closed\n",
2372 (unsigned long long)unit->fcp_lun,
2373 (unsigned long long)unit->port->wwpn);
2374 zfcp_erp_unit_shutdown(unit, 0, "fssfct1", req);
2377 goto failed_scsi_cmnd;
2380 retval = zfcp_fsf_req_send(req);
2381 if (unlikely(retval))
2382 goto failed_scsi_cmnd;
2387 put_device(&unit->sysfs_device);
2388 zfcp_fsf_req_free(req);
2389 scsi_cmnd->host_scribble = NULL;
2391 spin_unlock(&qdio->req_q_lock);
2396 * zfcp_fsf_send_fcp_ctm - send SCSI task management command
2397 * @unit: pointer to struct zfcp_unit
2398 * @tm_flags: unsigned byte for task management flags
2399 * Returns: on success pointer to struct fsf_req, NULL otherwise
2401 struct zfcp_fsf_req *zfcp_fsf_send_fcp_ctm(struct zfcp_unit *unit, u8 tm_flags)
2403 struct qdio_buffer_element *sbale;
2404 struct zfcp_fsf_req *req = NULL;
2405 struct fcp_cmnd *fcp_cmnd;
2406 struct zfcp_qdio *qdio = unit->port->adapter->qdio;
2408 if (unlikely(!(atomic_read(&unit->status) &
2409 ZFCP_STATUS_COMMON_UNBLOCKED)))
2412 spin_lock_bh(&qdio->req_q_lock);
2413 if (zfcp_fsf_req_sbal_get(qdio))
2416 req = zfcp_fsf_req_create(qdio, FSF_QTCB_FCP_CMND,
2417 qdio->adapter->pool.scsi_req);
2424 req->status |= ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT;
2426 req->handler = zfcp_fsf_send_fcp_command_handler;
2427 req->qtcb->header.lun_handle = unit->handle;
2428 req->qtcb->header.port_handle = unit->port->handle;
2429 req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND;
2430 req->qtcb->bottom.io.service_class = FSF_CLASS_3;
2431 req->qtcb->bottom.io.fcp_cmnd_length = FCP_CMND_LEN;
2433 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
2434 sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE;
2435 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
2437 fcp_cmnd = (struct fcp_cmnd *) &req->qtcb->bottom.io.fcp_cmnd;
2438 zfcp_fc_fcp_tm(fcp_cmnd, unit->device, tm_flags);
2440 zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT);
2441 if (!zfcp_fsf_req_send(req))
2444 zfcp_fsf_req_free(req);
2447 spin_unlock_bh(&qdio->req_q_lock);
2451 static void zfcp_fsf_control_file_handler(struct zfcp_fsf_req *req)
2456 * zfcp_fsf_control_file - control file upload/download
2457 * @adapter: pointer to struct zfcp_adapter
2458 * @fsf_cfdc: pointer to struct zfcp_fsf_cfdc
2459 * Returns: on success pointer to struct zfcp_fsf_req, NULL otherwise
2461 struct zfcp_fsf_req *zfcp_fsf_control_file(struct zfcp_adapter *adapter,
2462 struct zfcp_fsf_cfdc *fsf_cfdc)
2464 struct qdio_buffer_element *sbale;
2465 struct zfcp_qdio *qdio = adapter->qdio;
2466 struct zfcp_fsf_req *req = NULL;
2467 struct fsf_qtcb_bottom_support *bottom;
2468 int direction, retval = -EIO, bytes;
2470 if (!(adapter->adapter_features & FSF_FEATURE_CFDC))
2471 return ERR_PTR(-EOPNOTSUPP);
2473 switch (fsf_cfdc->command) {
2474 case FSF_QTCB_DOWNLOAD_CONTROL_FILE:
2475 direction = SBAL_FLAGS0_TYPE_WRITE;
2477 case FSF_QTCB_UPLOAD_CONTROL_FILE:
2478 direction = SBAL_FLAGS0_TYPE_READ;
2481 return ERR_PTR(-EINVAL);
2484 spin_lock_bh(&qdio->req_q_lock);
2485 if (zfcp_fsf_req_sbal_get(qdio))
2488 req = zfcp_fsf_req_create(qdio, fsf_cfdc->command, NULL);
2494 req->handler = zfcp_fsf_control_file_handler;
2496 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
2497 sbale[0].flags |= direction;
2499 bottom = &req->qtcb->bottom.support;
2500 bottom->operation_subtype = FSF_CFDC_OPERATION_SUBTYPE;
2501 bottom->option = fsf_cfdc->option;
2503 bytes = zfcp_qdio_sbals_from_sg(qdio, &req->queue_req,
2504 direction, fsf_cfdc->sg,
2505 FSF_MAX_SBALS_PER_REQ);
2506 if (bytes != ZFCP_CFDC_MAX_SIZE) {
2507 zfcp_fsf_req_free(req);
2511 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
2512 retval = zfcp_fsf_req_send(req);
2514 spin_unlock_bh(&qdio->req_q_lock);
2517 wait_for_completion(&req->completion);
2520 return ERR_PTR(retval);
2524 * zfcp_fsf_reqid_check - validate req_id contained in SBAL returned by QDIO
2525 * @adapter: pointer to struct zfcp_adapter
2526 * @sbal_idx: response queue index of SBAL to be processed
2528 void zfcp_fsf_reqid_check(struct zfcp_qdio *qdio, int sbal_idx)
2530 struct zfcp_adapter *adapter = qdio->adapter;
2531 struct qdio_buffer *sbal = qdio->resp_q.sbal[sbal_idx];
2532 struct qdio_buffer_element *sbale;
2533 struct zfcp_fsf_req *fsf_req;
2534 unsigned long flags, req_id;
2537 for (idx = 0; idx < QDIO_MAX_ELEMENTS_PER_BUFFER; idx++) {
2539 sbale = &sbal->element[idx];
2540 req_id = (unsigned long) sbale->addr;
2541 spin_lock_irqsave(&adapter->req_list_lock, flags);
2542 fsf_req = zfcp_reqlist_find(adapter, req_id);
2546 * Unknown request means that we have potentially memory
2547 * corruption and must stop the machine immediately.
2549 panic("error: unknown req_id (%lx) on adapter %s.\n",
2550 req_id, dev_name(&adapter->ccw_device->dev));
2552 list_del(&fsf_req->list);
2553 spin_unlock_irqrestore(&adapter->req_list_lock, flags);
2555 fsf_req->queue_req.sbal_response = sbal_idx;
2556 fsf_req->queue_req.qdio_inb_usage =
2557 atomic_read(&qdio->resp_q.count);
2558 zfcp_fsf_req_complete(fsf_req);
2560 if (likely(sbale->flags & SBAL_FLAGS_LAST_ENTRY))