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 = ntoh24(sr_buf->d_id);
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:
319 case FSF_SQ_NO_RECOM:
320 dev_err(&req->adapter->ccw_device->dev,
321 "The FCP adapter reported a problem "
322 "that cannot be recovered\n");
323 zfcp_erp_adapter_shutdown(req->adapter, 0, "fsfsqe1", req);
326 /* all non-return stats set FSFREQ_ERROR*/
327 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
330 static void zfcp_fsf_fsfstatus_eval(struct zfcp_fsf_req *req)
332 if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR))
335 switch (req->qtcb->header.fsf_status) {
336 case FSF_UNKNOWN_COMMAND:
337 dev_err(&req->adapter->ccw_device->dev,
338 "The FCP adapter does not recognize the command 0x%x\n",
339 req->qtcb->header.fsf_command);
340 zfcp_erp_adapter_shutdown(req->adapter, 0, "fsfse_1", req);
341 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
343 case FSF_ADAPTER_STATUS_AVAILABLE:
344 zfcp_fsf_fsfstatus_qual_eval(req);
349 static void zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *req)
351 struct zfcp_adapter *adapter = req->adapter;
352 struct fsf_qtcb *qtcb = req->qtcb;
353 union fsf_prot_status_qual *psq = &qtcb->prefix.prot_status_qual;
355 zfcp_dbf_hba_fsf_response(req);
357 if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) {
358 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
362 switch (qtcb->prefix.prot_status) {
364 case FSF_PROT_FSF_STATUS_PRESENTED:
366 case FSF_PROT_QTCB_VERSION_ERROR:
367 dev_err(&adapter->ccw_device->dev,
368 "QTCB version 0x%x not supported by FCP adapter "
369 "(0x%x to 0x%x)\n", FSF_QTCB_CURRENT_VERSION,
370 psq->word[0], psq->word[1]);
371 zfcp_erp_adapter_shutdown(adapter, 0, "fspse_1", req);
373 case FSF_PROT_ERROR_STATE:
374 case FSF_PROT_SEQ_NUMB_ERROR:
375 zfcp_erp_adapter_reopen(adapter, 0, "fspse_2", req);
376 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
378 case FSF_PROT_UNSUPP_QTCB_TYPE:
379 dev_err(&adapter->ccw_device->dev,
380 "The QTCB type is not supported by the FCP adapter\n");
381 zfcp_erp_adapter_shutdown(adapter, 0, "fspse_3", req);
383 case FSF_PROT_HOST_CONNECTION_INITIALIZING:
384 atomic_set_mask(ZFCP_STATUS_ADAPTER_HOST_CON_INIT,
387 case FSF_PROT_DUPLICATE_REQUEST_ID:
388 dev_err(&adapter->ccw_device->dev,
389 "0x%Lx is an ambiguous request identifier\n",
390 (unsigned long long)qtcb->bottom.support.req_handle);
391 zfcp_erp_adapter_shutdown(adapter, 0, "fspse_4", req);
393 case FSF_PROT_LINK_DOWN:
394 zfcp_fsf_link_down_info_eval(req, "fspse_5",
395 &psq->link_down_info);
396 /* FIXME: reopening adapter now? better wait for link up */
397 zfcp_erp_adapter_reopen(adapter, 0, "fspse_6", req);
399 case FSF_PROT_REEST_QUEUE:
400 /* All ports should be marked as ready to run again */
401 zfcp_erp_modify_adapter_status(adapter, "fspse_7", NULL,
402 ZFCP_STATUS_COMMON_RUNNING,
404 zfcp_erp_adapter_reopen(adapter,
405 ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED |
406 ZFCP_STATUS_COMMON_ERP_FAILED,
410 dev_err(&adapter->ccw_device->dev,
411 "0x%x is not a valid transfer protocol status\n",
412 qtcb->prefix.prot_status);
413 zfcp_erp_adapter_shutdown(adapter, 0, "fspse_9", req);
415 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
419 * zfcp_fsf_req_complete - process completion of a FSF request
420 * @fsf_req: The FSF request that has been completed.
422 * When a request has been completed either from the FCP adapter,
423 * or it has been dismissed due to a queue shutdown, this function
424 * is called to process the completion status and trigger further
425 * events related to the FSF request.
427 static void zfcp_fsf_req_complete(struct zfcp_fsf_req *req)
429 if (unlikely(req->fsf_command == FSF_QTCB_UNSOLICITED_STATUS)) {
430 zfcp_fsf_status_read_handler(req);
434 del_timer(&req->timer);
435 zfcp_fsf_protstatus_eval(req);
436 zfcp_fsf_fsfstatus_eval(req);
440 zfcp_erp_notify(req->erp_action, 0);
442 if (likely(req->status & ZFCP_STATUS_FSFREQ_CLEANUP))
443 zfcp_fsf_req_free(req);
445 complete(&req->completion);
449 * zfcp_fsf_req_dismiss_all - dismiss all fsf requests
450 * @adapter: pointer to struct zfcp_adapter
452 * Never ever call this without shutting down the adapter first.
453 * Otherwise the adapter would continue using and corrupting s390 storage.
454 * Included BUG_ON() call to ensure this is done.
455 * ERP is supposed to be the only user of this function.
457 void zfcp_fsf_req_dismiss_all(struct zfcp_adapter *adapter)
459 struct zfcp_fsf_req *req, *tmp;
461 LIST_HEAD(remove_queue);
464 BUG_ON(atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP);
465 spin_lock_irqsave(&adapter->req_list_lock, flags);
466 for (i = 0; i < REQUEST_LIST_SIZE; i++)
467 list_splice_init(&adapter->req_list[i], &remove_queue);
468 spin_unlock_irqrestore(&adapter->req_list_lock, flags);
470 list_for_each_entry_safe(req, tmp, &remove_queue, list) {
471 list_del(&req->list);
472 req->status |= ZFCP_STATUS_FSFREQ_DISMISSED;
473 zfcp_fsf_req_complete(req);
477 static int zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req *req)
479 struct fsf_qtcb_bottom_config *bottom = &req->qtcb->bottom.config;
480 struct zfcp_adapter *adapter = req->adapter;
481 struct Scsi_Host *shost = adapter->scsi_host;
482 struct fc_els_flogi *nsp, *plogi;
484 /* adjust pointers for missing command code */
485 nsp = (struct fc_els_flogi *) ((u8 *)&bottom->nport_serv_param
487 plogi = (struct fc_els_flogi *) ((u8 *)&bottom->plogi_payload
491 memcpy(req->data, bottom, sizeof(*bottom));
493 fc_host_port_name(shost) = nsp->fl_wwpn;
494 fc_host_node_name(shost) = nsp->fl_wwnn;
495 fc_host_port_id(shost) = ntoh24(bottom->s_id);
496 fc_host_speed(shost) = bottom->fc_link_speed;
497 fc_host_supported_classes(shost) = FC_COS_CLASS2 | FC_COS_CLASS3;
498 fc_host_supported_fc4s(shost)[2] = 1; /* FCP */
499 fc_host_active_fc4s(shost)[2] = 1; /* FCP */
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 = ntoh24(bottom->peer_d_id);
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;
890 zfcp_erp_unit_boxed(unit, "fsafch4", req);
891 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
893 case FSF_ADAPTER_STATUS_AVAILABLE:
894 switch (fsq->word[0]) {
895 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
896 zfcp_fc_test_link(unit->port);
898 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
899 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
904 req->status |= ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED;
910 * zfcp_fsf_abort_fcp_command - abort running SCSI command
911 * @old_req_id: unsigned long
912 * @unit: pointer to struct zfcp_unit
913 * Returns: pointer to struct zfcp_fsf_req
916 struct zfcp_fsf_req *zfcp_fsf_abort_fcp_command(unsigned long old_req_id,
917 struct zfcp_unit *unit)
919 struct qdio_buffer_element *sbale;
920 struct zfcp_fsf_req *req = NULL;
921 struct zfcp_qdio *qdio = unit->port->adapter->qdio;
923 spin_lock_bh(&qdio->req_q_lock);
924 if (zfcp_fsf_req_sbal_get(qdio))
926 req = zfcp_fsf_req_create(qdio, FSF_QTCB_ABORT_FCP_CMND,
927 qdio->adapter->pool.scsi_abort);
933 if (unlikely(!(atomic_read(&unit->status) &
934 ZFCP_STATUS_COMMON_UNBLOCKED)))
937 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
938 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
939 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
942 req->handler = zfcp_fsf_abort_fcp_command_handler;
943 req->qtcb->header.lun_handle = unit->handle;
944 req->qtcb->header.port_handle = unit->port->handle;
945 req->qtcb->bottom.support.req_handle = (u64) old_req_id;
947 zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT);
948 if (!zfcp_fsf_req_send(req))
952 zfcp_fsf_req_free(req);
955 spin_unlock_bh(&qdio->req_q_lock);
959 static void zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *req)
961 struct zfcp_adapter *adapter = req->adapter;
962 struct zfcp_fsf_ct_els *ct = req->data;
963 struct fsf_qtcb_header *header = &req->qtcb->header;
965 ct->status = -EINVAL;
967 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
970 switch (header->fsf_status) {
972 zfcp_dbf_san_ct_response(req);
975 case FSF_SERVICE_CLASS_NOT_SUPPORTED:
976 zfcp_fsf_class_not_supp(req);
978 case FSF_ADAPTER_STATUS_AVAILABLE:
979 switch (header->fsf_status_qual.word[0]){
980 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
981 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
982 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
986 case FSF_ACCESS_DENIED:
989 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
991 case FSF_PORT_HANDLE_NOT_VALID:
992 zfcp_erp_adapter_reopen(adapter, 0, "fsscth1", req);
994 case FSF_GENERIC_COMMAND_REJECTED:
995 case FSF_PAYLOAD_SIZE_MISMATCH:
996 case FSF_REQUEST_SIZE_TOO_LARGE:
997 case FSF_RESPONSE_SIZE_TOO_LARGE:
998 case FSF_SBAL_MISMATCH:
999 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1005 ct->handler(ct->handler_data);
1008 static void zfcp_fsf_setup_ct_els_unchained(struct qdio_buffer_element *sbale,
1009 struct scatterlist *sg_req,
1010 struct scatterlist *sg_resp)
1012 sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE_READ;
1013 sbale[2].addr = sg_virt(sg_req);
1014 sbale[2].length = sg_req->length;
1015 sbale[3].addr = sg_virt(sg_resp);
1016 sbale[3].length = sg_resp->length;
1017 sbale[3].flags |= SBAL_FLAGS_LAST_ENTRY;
1020 static int zfcp_fsf_one_sbal(struct scatterlist *sg)
1022 return sg_is_last(sg) && sg->length <= PAGE_SIZE;
1025 static int zfcp_fsf_setup_ct_els_sbals(struct zfcp_fsf_req *req,
1026 struct scatterlist *sg_req,
1027 struct scatterlist *sg_resp,
1030 struct zfcp_adapter *adapter = req->adapter;
1031 struct qdio_buffer_element *sbale = zfcp_qdio_sbale_req(adapter->qdio,
1033 u32 feat = adapter->adapter_features;
1036 if (!(feat & FSF_FEATURE_ELS_CT_CHAINED_SBALS)) {
1037 if (!zfcp_fsf_one_sbal(sg_req) || !zfcp_fsf_one_sbal(sg_resp))
1040 zfcp_fsf_setup_ct_els_unchained(sbale, sg_req, sg_resp);
1044 /* use single, unchained SBAL if it can hold the request */
1045 if (zfcp_fsf_one_sbal(sg_req) && zfcp_fsf_one_sbal(sg_resp)) {
1046 zfcp_fsf_setup_ct_els_unchained(sbale, sg_req, sg_resp);
1050 bytes = zfcp_qdio_sbals_from_sg(adapter->qdio, &req->queue_req,
1051 SBAL_FLAGS0_TYPE_WRITE_READ,
1055 req->qtcb->bottom.support.req_buf_length = bytes;
1056 req->queue_req.sbale_curr = ZFCP_LAST_SBALE_PER_SBAL;
1058 bytes = zfcp_qdio_sbals_from_sg(adapter->qdio, &req->queue_req,
1059 SBAL_FLAGS0_TYPE_WRITE_READ,
1060 sg_resp, max_sbals);
1061 req->qtcb->bottom.support.resp_buf_length = bytes;
1068 static int zfcp_fsf_setup_ct_els(struct zfcp_fsf_req *req,
1069 struct scatterlist *sg_req,
1070 struct scatterlist *sg_resp,
1074 unsigned int fcp_chan_timeout;
1076 ret = zfcp_fsf_setup_ct_els_sbals(req, sg_req, sg_resp, max_sbals);
1080 /* common settings for ct/gs and els requests */
1081 fcp_chan_timeout = 2 * FC_DEF_R_A_TOV / 1000;
1082 req->qtcb->bottom.support.service_class = FSF_CLASS_3;
1083 req->qtcb->bottom.support.timeout = fcp_chan_timeout;
1084 zfcp_fsf_start_timer(req, (fcp_chan_timeout + 10) * HZ);
1090 * zfcp_fsf_send_ct - initiate a Generic Service request (FC-GS)
1091 * @ct: pointer to struct zfcp_send_ct with data for request
1092 * @pool: if non-null this mempool is used to allocate struct zfcp_fsf_req
1094 int zfcp_fsf_send_ct(struct zfcp_fc_wka_port *wka_port,
1095 struct zfcp_fsf_ct_els *ct, mempool_t *pool)
1097 struct zfcp_qdio *qdio = wka_port->adapter->qdio;
1098 struct zfcp_fsf_req *req;
1101 spin_lock_bh(&qdio->req_q_lock);
1102 if (zfcp_fsf_req_sbal_get(qdio))
1105 req = zfcp_fsf_req_create(qdio, FSF_QTCB_SEND_GENERIC, pool);
1112 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1113 ret = zfcp_fsf_setup_ct_els(req, ct->req, ct->resp,
1114 FSF_MAX_SBALS_PER_REQ);
1118 req->handler = zfcp_fsf_send_ct_handler;
1119 req->qtcb->header.port_handle = wka_port->handle;
1122 zfcp_dbf_san_ct_request(req, wka_port->d_id);
1124 ret = zfcp_fsf_req_send(req);
1131 zfcp_fsf_req_free(req);
1133 spin_unlock_bh(&qdio->req_q_lock);
1137 static void zfcp_fsf_send_els_handler(struct zfcp_fsf_req *req)
1139 struct zfcp_fsf_ct_els *send_els = req->data;
1140 struct zfcp_port *port = send_els->port;
1141 struct fsf_qtcb_header *header = &req->qtcb->header;
1143 send_els->status = -EINVAL;
1145 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1146 goto skip_fsfstatus;
1148 switch (header->fsf_status) {
1150 zfcp_dbf_san_els_response(req);
1151 send_els->status = 0;
1153 case FSF_SERVICE_CLASS_NOT_SUPPORTED:
1154 zfcp_fsf_class_not_supp(req);
1156 case FSF_ADAPTER_STATUS_AVAILABLE:
1157 switch (header->fsf_status_qual.word[0]){
1158 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1159 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1160 case FSF_SQ_RETRY_IF_POSSIBLE:
1161 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1165 case FSF_ELS_COMMAND_REJECTED:
1166 case FSF_PAYLOAD_SIZE_MISMATCH:
1167 case FSF_REQUEST_SIZE_TOO_LARGE:
1168 case FSF_RESPONSE_SIZE_TOO_LARGE:
1170 case FSF_ACCESS_DENIED:
1172 zfcp_fsf_access_denied_port(req, port);
1174 case FSF_SBAL_MISMATCH:
1175 /* should never occure, avoided in zfcp_fsf_send_els */
1178 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1182 if (send_els->handler)
1183 send_els->handler(send_els->handler_data);
1187 * zfcp_fsf_send_els - initiate an ELS command (FC-FS)
1188 * @els: pointer to struct zfcp_send_els with data for the command
1190 int zfcp_fsf_send_els(struct zfcp_adapter *adapter, u32 d_id,
1191 struct zfcp_fsf_ct_els *els)
1193 struct zfcp_fsf_req *req;
1194 struct zfcp_qdio *qdio = adapter->qdio;
1197 spin_lock_bh(&qdio->req_q_lock);
1198 if (zfcp_fsf_req_sbal_get(qdio))
1201 req = zfcp_fsf_req_create(qdio, FSF_QTCB_SEND_ELS, NULL);
1208 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1209 ret = zfcp_fsf_setup_ct_els(req, els->req, els->resp, 2);
1214 hton24(req->qtcb->bottom.support.d_id, d_id);
1215 req->handler = zfcp_fsf_send_els_handler;
1218 zfcp_dbf_san_els_request(req);
1220 ret = zfcp_fsf_req_send(req);
1227 zfcp_fsf_req_free(req);
1229 spin_unlock_bh(&qdio->req_q_lock);
1233 int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action)
1235 struct qdio_buffer_element *sbale;
1236 struct zfcp_fsf_req *req;
1237 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1240 spin_lock_bh(&qdio->req_q_lock);
1241 if (zfcp_fsf_req_sbal_get(qdio))
1244 req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_CONFIG_DATA,
1245 qdio->adapter->pool.erp_req);
1248 retval = PTR_ERR(req);
1252 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1253 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
1254 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
1255 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
1257 req->qtcb->bottom.config.feature_selection =
1259 FSF_FEATURE_LUN_SHARING |
1260 FSF_FEATURE_NOTIFICATION_LOST |
1261 FSF_FEATURE_UPDATE_ALERT;
1262 req->erp_action = erp_action;
1263 req->handler = zfcp_fsf_exchange_config_data_handler;
1264 erp_action->fsf_req = req;
1266 zfcp_fsf_start_erp_timer(req);
1267 retval = zfcp_fsf_req_send(req);
1269 zfcp_fsf_req_free(req);
1270 erp_action->fsf_req = NULL;
1273 spin_unlock_bh(&qdio->req_q_lock);
1277 int zfcp_fsf_exchange_config_data_sync(struct zfcp_qdio *qdio,
1278 struct fsf_qtcb_bottom_config *data)
1280 struct qdio_buffer_element *sbale;
1281 struct zfcp_fsf_req *req = NULL;
1284 spin_lock_bh(&qdio->req_q_lock);
1285 if (zfcp_fsf_req_sbal_get(qdio))
1288 req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_CONFIG_DATA, NULL);
1291 retval = PTR_ERR(req);
1295 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
1296 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
1297 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
1298 req->handler = zfcp_fsf_exchange_config_data_handler;
1300 req->qtcb->bottom.config.feature_selection =
1302 FSF_FEATURE_LUN_SHARING |
1303 FSF_FEATURE_NOTIFICATION_LOST |
1304 FSF_FEATURE_UPDATE_ALERT;
1309 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1310 retval = zfcp_fsf_req_send(req);
1311 spin_unlock_bh(&qdio->req_q_lock);
1313 wait_for_completion(&req->completion);
1315 zfcp_fsf_req_free(req);
1319 spin_unlock_bh(&qdio->req_q_lock);
1324 * zfcp_fsf_exchange_port_data - request information about local port
1325 * @erp_action: ERP action for the adapter for which port data is requested
1326 * Returns: 0 on success, error otherwise
1328 int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action)
1330 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1331 struct qdio_buffer_element *sbale;
1332 struct zfcp_fsf_req *req;
1335 if (!(qdio->adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT))
1338 spin_lock_bh(&qdio->req_q_lock);
1339 if (zfcp_fsf_req_sbal_get(qdio))
1342 req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_PORT_DATA,
1343 qdio->adapter->pool.erp_req);
1346 retval = PTR_ERR(req);
1350 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1351 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
1352 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
1353 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
1355 req->handler = zfcp_fsf_exchange_port_data_handler;
1356 req->erp_action = erp_action;
1357 erp_action->fsf_req = req;
1359 zfcp_fsf_start_erp_timer(req);
1360 retval = zfcp_fsf_req_send(req);
1362 zfcp_fsf_req_free(req);
1363 erp_action->fsf_req = NULL;
1366 spin_unlock_bh(&qdio->req_q_lock);
1371 * zfcp_fsf_exchange_port_data_sync - request information about local port
1372 * @qdio: pointer to struct zfcp_qdio
1373 * @data: pointer to struct fsf_qtcb_bottom_port
1374 * Returns: 0 on success, error otherwise
1376 int zfcp_fsf_exchange_port_data_sync(struct zfcp_qdio *qdio,
1377 struct fsf_qtcb_bottom_port *data)
1379 struct qdio_buffer_element *sbale;
1380 struct zfcp_fsf_req *req = NULL;
1383 if (!(qdio->adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT))
1386 spin_lock_bh(&qdio->req_q_lock);
1387 if (zfcp_fsf_req_sbal_get(qdio))
1390 req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_PORT_DATA, NULL);
1393 retval = PTR_ERR(req);
1400 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
1401 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
1402 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
1404 req->handler = zfcp_fsf_exchange_port_data_handler;
1405 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1406 retval = zfcp_fsf_req_send(req);
1407 spin_unlock_bh(&qdio->req_q_lock);
1410 wait_for_completion(&req->completion);
1412 zfcp_fsf_req_free(req);
1417 spin_unlock_bh(&qdio->req_q_lock);
1421 static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req *req)
1423 struct zfcp_port *port = req->data;
1424 struct fsf_qtcb_header *header = &req->qtcb->header;
1425 struct fc_els_flogi *plogi;
1427 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1430 switch (header->fsf_status) {
1431 case FSF_PORT_ALREADY_OPEN:
1433 case FSF_ACCESS_DENIED:
1434 zfcp_fsf_access_denied_port(req, port);
1436 case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED:
1437 dev_warn(&req->adapter->ccw_device->dev,
1438 "Not enough FCP adapter resources to open "
1439 "remote port 0x%016Lx\n",
1440 (unsigned long long)port->wwpn);
1441 zfcp_erp_port_failed(port, "fsoph_1", req);
1442 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1444 case FSF_ADAPTER_STATUS_AVAILABLE:
1445 switch (header->fsf_status_qual.word[0]) {
1446 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1447 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1448 case FSF_SQ_NO_RETRY_POSSIBLE:
1449 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1454 port->handle = header->port_handle;
1455 atomic_set_mask(ZFCP_STATUS_COMMON_OPEN |
1456 ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
1457 atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED |
1458 ZFCP_STATUS_COMMON_ACCESS_BOXED,
1460 /* check whether D_ID has changed during open */
1462 * FIXME: This check is not airtight, as the FCP channel does
1463 * not monitor closures of target port connections caused on
1464 * the remote side. Thus, they might miss out on invalidating
1465 * locally cached WWPNs (and other N_Port parameters) of gone
1466 * target ports. So, our heroic attempt to make things safe
1467 * could be undermined by 'open port' response data tagged with
1468 * obsolete WWPNs. Another reason to monitor potential
1469 * connection closures ourself at least (by interpreting
1470 * incoming ELS' and unsolicited status). It just crosses my
1471 * mind that one should be able to cross-check by means of
1472 * another GID_PN straight after a port has been opened.
1473 * Alternately, an ADISC/PDISC ELS should suffice, as well.
1475 plogi = (struct fc_els_flogi *) req->qtcb->bottom.support.els;
1476 if (req->qtcb->bottom.support.els1_length >=
1478 zfcp_fc_plogi_evaluate(port, plogi);
1480 case FSF_UNKNOWN_OP_SUBTYPE:
1481 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1486 put_device(&port->sysfs_device);
1490 * zfcp_fsf_open_port - create and send open port request
1491 * @erp_action: pointer to struct zfcp_erp_action
1492 * Returns: 0 on success, error otherwise
1494 int zfcp_fsf_open_port(struct zfcp_erp_action *erp_action)
1496 struct qdio_buffer_element *sbale;
1497 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1498 struct zfcp_port *port = erp_action->port;
1499 struct zfcp_fsf_req *req;
1502 spin_lock_bh(&qdio->req_q_lock);
1503 if (zfcp_fsf_req_sbal_get(qdio))
1506 req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_PORT_WITH_DID,
1507 qdio->adapter->pool.erp_req);
1510 retval = PTR_ERR(req);
1514 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1515 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
1516 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
1517 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
1519 req->handler = zfcp_fsf_open_port_handler;
1520 hton24(req->qtcb->bottom.support.d_id, port->d_id);
1522 req->erp_action = erp_action;
1523 erp_action->fsf_req = req;
1524 get_device(&port->sysfs_device);
1526 zfcp_fsf_start_erp_timer(req);
1527 retval = zfcp_fsf_req_send(req);
1529 zfcp_fsf_req_free(req);
1530 erp_action->fsf_req = NULL;
1531 put_device(&port->sysfs_device);
1534 spin_unlock_bh(&qdio->req_q_lock);
1538 static void zfcp_fsf_close_port_handler(struct zfcp_fsf_req *req)
1540 struct zfcp_port *port = req->data;
1542 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1545 switch (req->qtcb->header.fsf_status) {
1546 case FSF_PORT_HANDLE_NOT_VALID:
1547 zfcp_erp_adapter_reopen(port->adapter, 0, "fscph_1", req);
1548 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1550 case FSF_ADAPTER_STATUS_AVAILABLE:
1553 zfcp_erp_modify_port_status(port, "fscph_2", req,
1554 ZFCP_STATUS_COMMON_OPEN,
1561 * zfcp_fsf_close_port - create and send close port request
1562 * @erp_action: pointer to struct zfcp_erp_action
1563 * Returns: 0 on success, error otherwise
1565 int zfcp_fsf_close_port(struct zfcp_erp_action *erp_action)
1567 struct qdio_buffer_element *sbale;
1568 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1569 struct zfcp_fsf_req *req;
1572 spin_lock_bh(&qdio->req_q_lock);
1573 if (zfcp_fsf_req_sbal_get(qdio))
1576 req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PORT,
1577 qdio->adapter->pool.erp_req);
1580 retval = PTR_ERR(req);
1584 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1585 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
1586 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
1587 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
1589 req->handler = zfcp_fsf_close_port_handler;
1590 req->data = erp_action->port;
1591 req->erp_action = erp_action;
1592 req->qtcb->header.port_handle = erp_action->port->handle;
1593 erp_action->fsf_req = req;
1595 zfcp_fsf_start_erp_timer(req);
1596 retval = zfcp_fsf_req_send(req);
1598 zfcp_fsf_req_free(req);
1599 erp_action->fsf_req = NULL;
1602 spin_unlock_bh(&qdio->req_q_lock);
1606 static void zfcp_fsf_open_wka_port_handler(struct zfcp_fsf_req *req)
1608 struct zfcp_fc_wka_port *wka_port = req->data;
1609 struct fsf_qtcb_header *header = &req->qtcb->header;
1611 if (req->status & ZFCP_STATUS_FSFREQ_ERROR) {
1612 wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE;
1616 switch (header->fsf_status) {
1617 case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED:
1618 dev_warn(&req->adapter->ccw_device->dev,
1619 "Opening WKA port 0x%x failed\n", wka_port->d_id);
1621 case FSF_ADAPTER_STATUS_AVAILABLE:
1622 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1624 case FSF_ACCESS_DENIED:
1625 wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE;
1628 wka_port->handle = header->port_handle;
1630 case FSF_PORT_ALREADY_OPEN:
1631 wka_port->status = ZFCP_FC_WKA_PORT_ONLINE;
1634 wake_up(&wka_port->completion_wq);
1638 * zfcp_fsf_open_wka_port - create and send open wka-port request
1639 * @wka_port: pointer to struct zfcp_fc_wka_port
1640 * Returns: 0 on success, error otherwise
1642 int zfcp_fsf_open_wka_port(struct zfcp_fc_wka_port *wka_port)
1644 struct qdio_buffer_element *sbale;
1645 struct zfcp_qdio *qdio = wka_port->adapter->qdio;
1646 struct zfcp_fsf_req *req;
1649 spin_lock_bh(&qdio->req_q_lock);
1650 if (zfcp_fsf_req_sbal_get(qdio))
1653 req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_PORT_WITH_DID,
1654 qdio->adapter->pool.erp_req);
1656 if (unlikely(IS_ERR(req))) {
1657 retval = PTR_ERR(req);
1661 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1662 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
1663 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
1664 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
1666 req->handler = zfcp_fsf_open_wka_port_handler;
1667 hton24(req->qtcb->bottom.support.d_id, wka_port->d_id);
1668 req->data = wka_port;
1670 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1671 retval = zfcp_fsf_req_send(req);
1673 zfcp_fsf_req_free(req);
1675 spin_unlock_bh(&qdio->req_q_lock);
1679 static void zfcp_fsf_close_wka_port_handler(struct zfcp_fsf_req *req)
1681 struct zfcp_fc_wka_port *wka_port = req->data;
1683 if (req->qtcb->header.fsf_status == FSF_PORT_HANDLE_NOT_VALID) {
1684 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1685 zfcp_erp_adapter_reopen(wka_port->adapter, 0, "fscwph1", req);
1688 wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE;
1689 wake_up(&wka_port->completion_wq);
1693 * zfcp_fsf_close_wka_port - create and send close wka port request
1694 * @wka_port: WKA port to open
1695 * Returns: 0 on success, error otherwise
1697 int zfcp_fsf_close_wka_port(struct zfcp_fc_wka_port *wka_port)
1699 struct qdio_buffer_element *sbale;
1700 struct zfcp_qdio *qdio = wka_port->adapter->qdio;
1701 struct zfcp_fsf_req *req;
1704 spin_lock_bh(&qdio->req_q_lock);
1705 if (zfcp_fsf_req_sbal_get(qdio))
1708 req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PORT,
1709 qdio->adapter->pool.erp_req);
1711 if (unlikely(IS_ERR(req))) {
1712 retval = PTR_ERR(req);
1716 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1717 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
1718 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
1719 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
1721 req->handler = zfcp_fsf_close_wka_port_handler;
1722 req->data = wka_port;
1723 req->qtcb->header.port_handle = wka_port->handle;
1725 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1726 retval = zfcp_fsf_req_send(req);
1728 zfcp_fsf_req_free(req);
1730 spin_unlock_bh(&qdio->req_q_lock);
1734 static void zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *req)
1736 struct zfcp_port *port = req->data;
1737 struct fsf_qtcb_header *header = &req->qtcb->header;
1738 struct zfcp_unit *unit;
1740 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1743 switch (header->fsf_status) {
1744 case FSF_PORT_HANDLE_NOT_VALID:
1745 zfcp_erp_adapter_reopen(port->adapter, 0, "fscpph1", req);
1746 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1748 case FSF_ACCESS_DENIED:
1749 zfcp_fsf_access_denied_port(req, port);
1751 case FSF_PORT_BOXED:
1752 /* can't use generic zfcp_erp_modify_port_status because
1753 * ZFCP_STATUS_COMMON_OPEN must not be reset for the port */
1754 atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
1755 read_lock(&port->unit_list_lock);
1756 list_for_each_entry(unit, &port->unit_list, list)
1757 atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN,
1759 read_unlock(&port->unit_list_lock);
1760 zfcp_erp_port_boxed(port, "fscpph2", req);
1761 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1763 case FSF_ADAPTER_STATUS_AVAILABLE:
1764 switch (header->fsf_status_qual.word[0]) {
1765 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1767 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1768 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1773 /* can't use generic zfcp_erp_modify_port_status because
1774 * ZFCP_STATUS_COMMON_OPEN must not be reset for the port
1776 atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
1777 read_lock(&port->unit_list_lock);
1778 list_for_each_entry(unit, &port->unit_list, list)
1779 atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN,
1781 read_unlock(&port->unit_list_lock);
1787 * zfcp_fsf_close_physical_port - close physical port
1788 * @erp_action: pointer to struct zfcp_erp_action
1789 * Returns: 0 on success
1791 int zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action)
1793 struct qdio_buffer_element *sbale;
1794 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1795 struct zfcp_fsf_req *req;
1798 spin_lock_bh(&qdio->req_q_lock);
1799 if (zfcp_fsf_req_sbal_get(qdio))
1802 req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PHYSICAL_PORT,
1803 qdio->adapter->pool.erp_req);
1806 retval = PTR_ERR(req);
1810 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1811 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
1812 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
1813 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
1815 req->data = erp_action->port;
1816 req->qtcb->header.port_handle = erp_action->port->handle;
1817 req->erp_action = erp_action;
1818 req->handler = zfcp_fsf_close_physical_port_handler;
1819 erp_action->fsf_req = req;
1821 zfcp_fsf_start_erp_timer(req);
1822 retval = zfcp_fsf_req_send(req);
1824 zfcp_fsf_req_free(req);
1825 erp_action->fsf_req = NULL;
1828 spin_unlock_bh(&qdio->req_q_lock);
1832 static void zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *req)
1834 struct zfcp_adapter *adapter = req->adapter;
1835 struct zfcp_unit *unit = req->data;
1836 struct fsf_qtcb_header *header = &req->qtcb->header;
1837 struct fsf_qtcb_bottom_support *bottom = &req->qtcb->bottom.support;
1838 struct fsf_queue_designator *queue_designator =
1839 &header->fsf_status_qual.fsf_queue_designator;
1840 int exclusive, readwrite;
1842 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1845 atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED |
1846 ZFCP_STATUS_COMMON_ACCESS_BOXED |
1847 ZFCP_STATUS_UNIT_SHARED |
1848 ZFCP_STATUS_UNIT_READONLY,
1851 switch (header->fsf_status) {
1853 case FSF_PORT_HANDLE_NOT_VALID:
1854 zfcp_erp_adapter_reopen(unit->port->adapter, 0, "fsouh_1", req);
1856 case FSF_LUN_ALREADY_OPEN:
1858 case FSF_ACCESS_DENIED:
1859 zfcp_fsf_access_denied_unit(req, unit);
1860 atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED, &unit->status);
1861 atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status);
1863 case FSF_PORT_BOXED:
1864 zfcp_erp_port_boxed(unit->port, "fsouh_2", req);
1865 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1867 case FSF_LUN_SHARING_VIOLATION:
1868 if (header->fsf_status_qual.word[0])
1869 dev_warn(&adapter->ccw_device->dev,
1870 "LUN 0x%Lx on port 0x%Lx is already in "
1871 "use by CSS%d, MIF Image ID %x\n",
1872 (unsigned long long)unit->fcp_lun,
1873 (unsigned long long)unit->port->wwpn,
1874 queue_designator->cssid,
1875 queue_designator->hla);
1877 zfcp_act_eval_err(adapter,
1878 header->fsf_status_qual.word[2]);
1879 zfcp_erp_unit_access_denied(unit, "fsouh_3", req);
1880 atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED, &unit->status);
1881 atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status);
1882 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1884 case FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED:
1885 dev_warn(&adapter->ccw_device->dev,
1886 "No handle is available for LUN "
1887 "0x%016Lx on port 0x%016Lx\n",
1888 (unsigned long long)unit->fcp_lun,
1889 (unsigned long long)unit->port->wwpn);
1890 zfcp_erp_unit_failed(unit, "fsouh_4", req);
1892 case FSF_INVALID_COMMAND_OPTION:
1893 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1895 case FSF_ADAPTER_STATUS_AVAILABLE:
1896 switch (header->fsf_status_qual.word[0]) {
1897 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1898 zfcp_fc_test_link(unit->port);
1900 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1901 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1907 unit->handle = header->lun_handle;
1908 atomic_set_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status);
1910 if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE) &&
1911 (adapter->adapter_features & FSF_FEATURE_LUN_SHARING) &&
1912 !zfcp_ccw_priv_sch(adapter)) {
1913 exclusive = (bottom->lun_access_info &
1914 FSF_UNIT_ACCESS_EXCLUSIVE);
1915 readwrite = (bottom->lun_access_info &
1916 FSF_UNIT_ACCESS_OUTBOUND_TRANSFER);
1919 atomic_set_mask(ZFCP_STATUS_UNIT_SHARED,
1923 atomic_set_mask(ZFCP_STATUS_UNIT_READONLY,
1925 dev_info(&adapter->ccw_device->dev,
1926 "SCSI device at LUN 0x%016Lx on port "
1927 "0x%016Lx opened read-only\n",
1928 (unsigned long long)unit->fcp_lun,
1929 (unsigned long long)unit->port->wwpn);
1932 if (exclusive && !readwrite) {
1933 dev_err(&adapter->ccw_device->dev,
1934 "Exclusive read-only access not "
1935 "supported (unit 0x%016Lx, "
1937 (unsigned long long)unit->fcp_lun,
1938 (unsigned long long)unit->port->wwpn);
1939 zfcp_erp_unit_failed(unit, "fsouh_5", req);
1940 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1941 zfcp_erp_unit_shutdown(unit, 0, "fsouh_6", req);
1942 } else if (!exclusive && readwrite) {
1943 dev_err(&adapter->ccw_device->dev,
1944 "Shared read-write access not "
1945 "supported (unit 0x%016Lx, port "
1947 (unsigned long long)unit->fcp_lun,
1948 (unsigned long long)unit->port->wwpn);
1949 zfcp_erp_unit_failed(unit, "fsouh_7", req);
1950 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1951 zfcp_erp_unit_shutdown(unit, 0, "fsouh_8", req);
1959 * zfcp_fsf_open_unit - open unit
1960 * @erp_action: pointer to struct zfcp_erp_action
1961 * Returns: 0 on success, error otherwise
1963 int zfcp_fsf_open_unit(struct zfcp_erp_action *erp_action)
1965 struct qdio_buffer_element *sbale;
1966 struct zfcp_adapter *adapter = erp_action->adapter;
1967 struct zfcp_qdio *qdio = adapter->qdio;
1968 struct zfcp_fsf_req *req;
1971 spin_lock_bh(&qdio->req_q_lock);
1972 if (zfcp_fsf_req_sbal_get(qdio))
1975 req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_LUN,
1976 adapter->pool.erp_req);
1979 retval = PTR_ERR(req);
1983 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1984 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
1985 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
1986 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
1988 req->qtcb->header.port_handle = erp_action->port->handle;
1989 req->qtcb->bottom.support.fcp_lun = erp_action->unit->fcp_lun;
1990 req->handler = zfcp_fsf_open_unit_handler;
1991 req->data = erp_action->unit;
1992 req->erp_action = erp_action;
1993 erp_action->fsf_req = req;
1995 if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE))
1996 req->qtcb->bottom.support.option = FSF_OPEN_LUN_SUPPRESS_BOXING;
1998 zfcp_fsf_start_erp_timer(req);
1999 retval = zfcp_fsf_req_send(req);
2001 zfcp_fsf_req_free(req);
2002 erp_action->fsf_req = NULL;
2005 spin_unlock_bh(&qdio->req_q_lock);
2009 static void zfcp_fsf_close_unit_handler(struct zfcp_fsf_req *req)
2011 struct zfcp_unit *unit = req->data;
2013 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
2016 switch (req->qtcb->header.fsf_status) {
2017 case FSF_PORT_HANDLE_NOT_VALID:
2018 zfcp_erp_adapter_reopen(unit->port->adapter, 0, "fscuh_1", req);
2019 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2021 case FSF_LUN_HANDLE_NOT_VALID:
2022 zfcp_erp_port_reopen(unit->port, 0, "fscuh_2", req);
2023 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2025 case FSF_PORT_BOXED:
2026 zfcp_erp_port_boxed(unit->port, "fscuh_3", req);
2027 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2029 case FSF_ADAPTER_STATUS_AVAILABLE:
2030 switch (req->qtcb->header.fsf_status_qual.word[0]) {
2031 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
2032 zfcp_fc_test_link(unit->port);
2034 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
2035 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2040 atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status);
2046 * zfcp_fsf_close_unit - close zfcp unit
2047 * @erp_action: pointer to struct zfcp_unit
2048 * Returns: 0 on success, error otherwise
2050 int zfcp_fsf_close_unit(struct zfcp_erp_action *erp_action)
2052 struct qdio_buffer_element *sbale;
2053 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
2054 struct zfcp_fsf_req *req;
2057 spin_lock_bh(&qdio->req_q_lock);
2058 if (zfcp_fsf_req_sbal_get(qdio))
2061 req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_LUN,
2062 qdio->adapter->pool.erp_req);
2065 retval = PTR_ERR(req);
2069 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
2070 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
2071 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
2072 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
2074 req->qtcb->header.port_handle = erp_action->port->handle;
2075 req->qtcb->header.lun_handle = erp_action->unit->handle;
2076 req->handler = zfcp_fsf_close_unit_handler;
2077 req->data = erp_action->unit;
2078 req->erp_action = erp_action;
2079 erp_action->fsf_req = req;
2081 zfcp_fsf_start_erp_timer(req);
2082 retval = zfcp_fsf_req_send(req);
2084 zfcp_fsf_req_free(req);
2085 erp_action->fsf_req = NULL;
2088 spin_unlock_bh(&qdio->req_q_lock);
2092 static void zfcp_fsf_update_lat(struct fsf_latency_record *lat_rec, u32 lat)
2094 lat_rec->sum += lat;
2095 lat_rec->min = min(lat_rec->min, lat);
2096 lat_rec->max = max(lat_rec->max, lat);
2099 static void zfcp_fsf_req_trace(struct zfcp_fsf_req *req, struct scsi_cmnd *scsi)
2101 struct fsf_qual_latency_info *lat_in;
2102 struct latency_cont *lat = NULL;
2103 struct zfcp_unit *unit = req->unit;
2104 struct zfcp_blk_drv_data blktrc;
2105 int ticks = req->adapter->timer_ticks;
2107 lat_in = &req->qtcb->prefix.prot_status_qual.latency_info;
2110 blktrc.magic = ZFCP_BLK_DRV_DATA_MAGIC;
2111 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
2112 blktrc.flags |= ZFCP_BLK_REQ_ERROR;
2113 blktrc.inb_usage = req->queue_req.qdio_inb_usage;
2114 blktrc.outb_usage = req->queue_req.qdio_outb_usage;
2116 if (req->adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA) {
2117 blktrc.flags |= ZFCP_BLK_LAT_VALID;
2118 blktrc.channel_lat = lat_in->channel_lat * ticks;
2119 blktrc.fabric_lat = lat_in->fabric_lat * ticks;
2121 switch (req->qtcb->bottom.io.data_direction) {
2122 case FSF_DATADIR_READ:
2123 lat = &unit->latencies.read;
2125 case FSF_DATADIR_WRITE:
2126 lat = &unit->latencies.write;
2128 case FSF_DATADIR_CMND:
2129 lat = &unit->latencies.cmd;
2134 spin_lock(&unit->latencies.lock);
2135 zfcp_fsf_update_lat(&lat->channel, lat_in->channel_lat);
2136 zfcp_fsf_update_lat(&lat->fabric, lat_in->fabric_lat);
2138 spin_unlock(&unit->latencies.lock);
2142 blk_add_driver_data(scsi->request->q, scsi->request, &blktrc,
2146 static void zfcp_fsf_send_fcp_command_task_handler(struct zfcp_fsf_req *req)
2148 struct scsi_cmnd *scpnt;
2149 struct fcp_resp_with_ext *fcp_rsp;
2150 unsigned long flags;
2152 read_lock_irqsave(&req->adapter->abort_lock, flags);
2155 if (unlikely(!scpnt)) {
2156 read_unlock_irqrestore(&req->adapter->abort_lock, flags);
2160 if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) {
2161 set_host_byte(scpnt, DID_TRANSPORT_DISRUPTED);
2162 goto skip_fsfstatus;
2165 fcp_rsp = (struct fcp_resp_with_ext *) &req->qtcb->bottom.io.fcp_rsp;
2166 zfcp_fc_eval_fcp_rsp(fcp_rsp, scpnt);
2168 zfcp_fsf_req_trace(req, scpnt);
2171 if (scpnt->result != 0)
2172 zfcp_dbf_scsi_result("erro", 3, req->adapter->dbf, scpnt, req);
2173 else if (scpnt->retries > 0)
2174 zfcp_dbf_scsi_result("retr", 4, req->adapter->dbf, scpnt, req);
2176 zfcp_dbf_scsi_result("norm", 6, req->adapter->dbf, scpnt, req);
2178 scpnt->host_scribble = NULL;
2179 (scpnt->scsi_done) (scpnt);
2181 * We must hold this lock until scsi_done has been called.
2182 * Otherwise we may call scsi_done after abort regarding this
2183 * command has completed.
2184 * Note: scsi_done must not block!
2186 read_unlock_irqrestore(&req->adapter->abort_lock, flags);
2189 static void zfcp_fsf_send_fcp_ctm_handler(struct zfcp_fsf_req *req)
2191 struct fcp_resp_with_ext *fcp_rsp;
2192 struct fcp_resp_rsp_info *rsp_info;
2194 fcp_rsp = (struct fcp_resp_with_ext *) &req->qtcb->bottom.io.fcp_rsp;
2195 rsp_info = (struct fcp_resp_rsp_info *) &fcp_rsp[1];
2197 if ((rsp_info->rsp_code != FCP_TMF_CMPL) ||
2198 (req->status & ZFCP_STATUS_FSFREQ_ERROR))
2199 req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED;
2203 static void zfcp_fsf_send_fcp_command_handler(struct zfcp_fsf_req *req)
2205 struct zfcp_unit *unit;
2206 struct fsf_qtcb_header *header = &req->qtcb->header;
2208 if (unlikely(req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT))
2213 if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR))
2214 goto skip_fsfstatus;
2216 switch (header->fsf_status) {
2217 case FSF_HANDLE_MISMATCH:
2218 case FSF_PORT_HANDLE_NOT_VALID:
2219 zfcp_erp_adapter_reopen(unit->port->adapter, 0, "fssfch1", req);
2220 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2222 case FSF_FCPLUN_NOT_VALID:
2223 case FSF_LUN_HANDLE_NOT_VALID:
2224 zfcp_erp_port_reopen(unit->port, 0, "fssfch2", req);
2225 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2227 case FSF_SERVICE_CLASS_NOT_SUPPORTED:
2228 zfcp_fsf_class_not_supp(req);
2230 case FSF_ACCESS_DENIED:
2231 zfcp_fsf_access_denied_unit(req, unit);
2233 case FSF_DIRECTION_INDICATOR_NOT_VALID:
2234 dev_err(&req->adapter->ccw_device->dev,
2235 "Incorrect direction %d, unit 0x%016Lx on port "
2236 "0x%016Lx closed\n",
2237 req->qtcb->bottom.io.data_direction,
2238 (unsigned long long)unit->fcp_lun,
2239 (unsigned long long)unit->port->wwpn);
2240 zfcp_erp_adapter_shutdown(unit->port->adapter, 0, "fssfch3",
2242 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2244 case FSF_CMND_LENGTH_NOT_VALID:
2245 dev_err(&req->adapter->ccw_device->dev,
2246 "Incorrect CDB length %d, unit 0x%016Lx on "
2247 "port 0x%016Lx closed\n",
2248 req->qtcb->bottom.io.fcp_cmnd_length,
2249 (unsigned long long)unit->fcp_lun,
2250 (unsigned long long)unit->port->wwpn);
2251 zfcp_erp_adapter_shutdown(unit->port->adapter, 0, "fssfch4",
2253 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2255 case FSF_PORT_BOXED:
2256 zfcp_erp_port_boxed(unit->port, "fssfch5", req);
2257 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2260 zfcp_erp_unit_boxed(unit, "fssfch6", req);
2261 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2263 case FSF_ADAPTER_STATUS_AVAILABLE:
2264 if (header->fsf_status_qual.word[0] ==
2265 FSF_SQ_INVOKE_LINK_TEST_PROCEDURE)
2266 zfcp_fc_test_link(unit->port);
2267 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2271 if (req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT)
2272 zfcp_fsf_send_fcp_ctm_handler(req);
2274 zfcp_fsf_send_fcp_command_task_handler(req);
2276 put_device(&unit->sysfs_device);
2281 * zfcp_fsf_send_fcp_command_task - initiate an FCP command (for a SCSI command)
2282 * @unit: unit where command is sent to
2283 * @scsi_cmnd: scsi command to be sent
2285 int zfcp_fsf_send_fcp_command_task(struct zfcp_unit *unit,
2286 struct scsi_cmnd *scsi_cmnd)
2288 struct zfcp_fsf_req *req;
2289 struct fcp_cmnd *fcp_cmnd;
2290 unsigned int sbtype = SBAL_FLAGS0_TYPE_READ;
2291 int real_bytes, retval = -EIO;
2292 struct zfcp_adapter *adapter = unit->port->adapter;
2293 struct zfcp_qdio *qdio = adapter->qdio;
2295 if (unlikely(!(atomic_read(&unit->status) &
2296 ZFCP_STATUS_COMMON_UNBLOCKED)))
2299 spin_lock(&qdio->req_q_lock);
2300 if (atomic_read(&qdio->req_q.count) <= 0) {
2301 atomic_inc(&qdio->req_q_full);
2305 req = zfcp_fsf_req_create(qdio, FSF_QTCB_FCP_CMND,
2306 adapter->pool.scsi_req);
2309 retval = PTR_ERR(req);
2313 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
2314 get_device(&unit->sysfs_device);
2316 req->data = scsi_cmnd;
2317 req->handler = zfcp_fsf_send_fcp_command_handler;
2318 req->qtcb->header.lun_handle = unit->handle;
2319 req->qtcb->header.port_handle = unit->port->handle;
2320 req->qtcb->bottom.io.service_class = FSF_CLASS_3;
2321 req->qtcb->bottom.io.fcp_cmnd_length = FCP_CMND_LEN;
2323 scsi_cmnd->host_scribble = (unsigned char *) req->req_id;
2326 * set depending on data direction:
2327 * data direction bits in SBALE (SB Type)
2328 * data direction bits in QTCB
2330 switch (scsi_cmnd->sc_data_direction) {
2332 req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND;
2334 case DMA_FROM_DEVICE:
2335 req->qtcb->bottom.io.data_direction = FSF_DATADIR_READ;
2338 req->qtcb->bottom.io.data_direction = FSF_DATADIR_WRITE;
2339 sbtype = SBAL_FLAGS0_TYPE_WRITE;
2341 case DMA_BIDIRECTIONAL:
2342 goto failed_scsi_cmnd;
2345 fcp_cmnd = (struct fcp_cmnd *) &req->qtcb->bottom.io.fcp_cmnd;
2346 zfcp_fc_scsi_to_fcp(fcp_cmnd, scsi_cmnd);
2348 real_bytes = zfcp_qdio_sbals_from_sg(qdio, &req->queue_req, sbtype,
2349 scsi_sglist(scsi_cmnd),
2350 FSF_MAX_SBALS_PER_REQ);
2351 if (unlikely(real_bytes < 0)) {
2352 if (req->queue_req.sbal_number >= FSF_MAX_SBALS_PER_REQ) {
2353 dev_err(&adapter->ccw_device->dev,
2354 "Oversize data package, unit 0x%016Lx "
2355 "on port 0x%016Lx closed\n",
2356 (unsigned long long)unit->fcp_lun,
2357 (unsigned long long)unit->port->wwpn);
2358 zfcp_erp_unit_shutdown(unit, 0, "fssfct1", req);
2361 goto failed_scsi_cmnd;
2364 retval = zfcp_fsf_req_send(req);
2365 if (unlikely(retval))
2366 goto failed_scsi_cmnd;
2371 put_device(&unit->sysfs_device);
2372 zfcp_fsf_req_free(req);
2373 scsi_cmnd->host_scribble = NULL;
2375 spin_unlock(&qdio->req_q_lock);
2380 * zfcp_fsf_send_fcp_ctm - send SCSI task management command
2381 * @unit: pointer to struct zfcp_unit
2382 * @tm_flags: unsigned byte for task management flags
2383 * Returns: on success pointer to struct fsf_req, NULL otherwise
2385 struct zfcp_fsf_req *zfcp_fsf_send_fcp_ctm(struct zfcp_unit *unit, u8 tm_flags)
2387 struct qdio_buffer_element *sbale;
2388 struct zfcp_fsf_req *req = NULL;
2389 struct fcp_cmnd *fcp_cmnd;
2390 struct zfcp_qdio *qdio = unit->port->adapter->qdio;
2392 if (unlikely(!(atomic_read(&unit->status) &
2393 ZFCP_STATUS_COMMON_UNBLOCKED)))
2396 spin_lock_bh(&qdio->req_q_lock);
2397 if (zfcp_fsf_req_sbal_get(qdio))
2400 req = zfcp_fsf_req_create(qdio, FSF_QTCB_FCP_CMND,
2401 qdio->adapter->pool.scsi_req);
2408 req->status |= ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT;
2410 req->handler = zfcp_fsf_send_fcp_command_handler;
2411 req->qtcb->header.lun_handle = unit->handle;
2412 req->qtcb->header.port_handle = unit->port->handle;
2413 req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND;
2414 req->qtcb->bottom.io.service_class = FSF_CLASS_3;
2415 req->qtcb->bottom.io.fcp_cmnd_length = FCP_CMND_LEN;
2417 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
2418 sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE;
2419 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
2421 fcp_cmnd = (struct fcp_cmnd *) &req->qtcb->bottom.io.fcp_cmnd;
2422 zfcp_fc_fcp_tm(fcp_cmnd, unit->device, tm_flags);
2424 zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT);
2425 if (!zfcp_fsf_req_send(req))
2428 zfcp_fsf_req_free(req);
2431 spin_unlock_bh(&qdio->req_q_lock);
2435 static void zfcp_fsf_control_file_handler(struct zfcp_fsf_req *req)
2440 * zfcp_fsf_control_file - control file upload/download
2441 * @adapter: pointer to struct zfcp_adapter
2442 * @fsf_cfdc: pointer to struct zfcp_fsf_cfdc
2443 * Returns: on success pointer to struct zfcp_fsf_req, NULL otherwise
2445 struct zfcp_fsf_req *zfcp_fsf_control_file(struct zfcp_adapter *adapter,
2446 struct zfcp_fsf_cfdc *fsf_cfdc)
2448 struct qdio_buffer_element *sbale;
2449 struct zfcp_qdio *qdio = adapter->qdio;
2450 struct zfcp_fsf_req *req = NULL;
2451 struct fsf_qtcb_bottom_support *bottom;
2452 int direction, retval = -EIO, bytes;
2454 if (!(adapter->adapter_features & FSF_FEATURE_CFDC))
2455 return ERR_PTR(-EOPNOTSUPP);
2457 switch (fsf_cfdc->command) {
2458 case FSF_QTCB_DOWNLOAD_CONTROL_FILE:
2459 direction = SBAL_FLAGS0_TYPE_WRITE;
2461 case FSF_QTCB_UPLOAD_CONTROL_FILE:
2462 direction = SBAL_FLAGS0_TYPE_READ;
2465 return ERR_PTR(-EINVAL);
2468 spin_lock_bh(&qdio->req_q_lock);
2469 if (zfcp_fsf_req_sbal_get(qdio))
2472 req = zfcp_fsf_req_create(qdio, fsf_cfdc->command, NULL);
2478 req->handler = zfcp_fsf_control_file_handler;
2480 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
2481 sbale[0].flags |= direction;
2483 bottom = &req->qtcb->bottom.support;
2484 bottom->operation_subtype = FSF_CFDC_OPERATION_SUBTYPE;
2485 bottom->option = fsf_cfdc->option;
2487 bytes = zfcp_qdio_sbals_from_sg(qdio, &req->queue_req,
2488 direction, fsf_cfdc->sg,
2489 FSF_MAX_SBALS_PER_REQ);
2490 if (bytes != ZFCP_CFDC_MAX_SIZE) {
2491 zfcp_fsf_req_free(req);
2495 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
2496 retval = zfcp_fsf_req_send(req);
2498 spin_unlock_bh(&qdio->req_q_lock);
2501 wait_for_completion(&req->completion);
2504 return ERR_PTR(retval);
2508 * zfcp_fsf_reqid_check - validate req_id contained in SBAL returned by QDIO
2509 * @adapter: pointer to struct zfcp_adapter
2510 * @sbal_idx: response queue index of SBAL to be processed
2512 void zfcp_fsf_reqid_check(struct zfcp_qdio *qdio, int sbal_idx)
2514 struct zfcp_adapter *adapter = qdio->adapter;
2515 struct qdio_buffer *sbal = qdio->resp_q.sbal[sbal_idx];
2516 struct qdio_buffer_element *sbale;
2517 struct zfcp_fsf_req *fsf_req;
2518 unsigned long flags, req_id;
2521 for (idx = 0; idx < QDIO_MAX_ELEMENTS_PER_BUFFER; idx++) {
2523 sbale = &sbal->element[idx];
2524 req_id = (unsigned long) sbale->addr;
2525 spin_lock_irqsave(&adapter->req_list_lock, flags);
2526 fsf_req = zfcp_reqlist_find(adapter, req_id);
2530 * Unknown request means that we have potentially memory
2531 * corruption and must stop the machine immediately.
2533 panic("error: unknown req_id (%lx) on adapter %s.\n",
2534 req_id, dev_name(&adapter->ccw_device->dev));
2536 list_del(&fsf_req->list);
2537 spin_unlock_irqrestore(&adapter->req_list_lock, flags);
2539 fsf_req->queue_req.sbal_response = sbal_idx;
2540 fsf_req->queue_req.qdio_inb_usage =
2541 atomic_read(&qdio->resp_q.count);
2542 zfcp_fsf_req_complete(fsf_req);
2544 if (likely(sbale->flags & SBAL_FLAGS_LAST_ENTRY))