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);
776 int req_id = req->req_id;
778 /* put allocated FSF request into hash table */
779 spin_lock_irqsave(&adapter->req_list_lock, flags);
780 idx = zfcp_reqlist_hash(req_id);
781 list_add_tail(&req->list, &adapter->req_list[idx]);
782 spin_unlock_irqrestore(&adapter->req_list_lock, flags);
784 req->queue_req.qdio_outb_usage = atomic_read(&qdio->req_q.count);
785 req->issued = get_clock();
786 if (zfcp_qdio_send(qdio, &req->queue_req)) {
787 del_timer(&req->timer);
788 spin_lock_irqsave(&adapter->req_list_lock, flags);
789 /* lookup request again, list might have changed */
790 req = zfcp_reqlist_find(adapter, req_id);
792 zfcp_reqlist_remove(adapter, req);
793 spin_unlock_irqrestore(&adapter->req_list_lock, flags);
794 zfcp_erp_adapter_reopen(adapter, 0, "fsrs__1", req);
798 /* Don't increase for unsolicited status */
800 adapter->fsf_req_seq_no++;
807 * zfcp_fsf_status_read - send status read request
808 * @adapter: pointer to struct zfcp_adapter
809 * @req_flags: request flags
810 * Returns: 0 on success, ERROR otherwise
812 int zfcp_fsf_status_read(struct zfcp_qdio *qdio)
814 struct zfcp_adapter *adapter = qdio->adapter;
815 struct zfcp_fsf_req *req;
816 struct fsf_status_read_buffer *sr_buf;
817 struct qdio_buffer_element *sbale;
820 spin_lock_bh(&qdio->req_q_lock);
821 if (zfcp_fsf_req_sbal_get(qdio))
824 req = zfcp_fsf_req_create(qdio, FSF_QTCB_UNSOLICITED_STATUS,
825 adapter->pool.status_read_req);
827 retval = PTR_ERR(req);
831 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
832 sbale[2].flags |= SBAL_FLAGS_LAST_ENTRY;
833 req->queue_req.sbale_curr = 2;
835 sr_buf = mempool_alloc(adapter->pool.status_read_data, GFP_ATOMIC);
840 memset(sr_buf, 0, sizeof(*sr_buf));
842 sbale = zfcp_qdio_sbale_curr(qdio, &req->queue_req);
843 sbale->addr = (void *) sr_buf;
844 sbale->length = sizeof(*sr_buf);
846 retval = zfcp_fsf_req_send(req);
848 goto failed_req_send;
853 mempool_free(sr_buf, adapter->pool.status_read_data);
855 zfcp_fsf_req_free(req);
856 zfcp_dbf_hba_fsf_unsol("fail", adapter->dbf, NULL);
858 spin_unlock_bh(&qdio->req_q_lock);
862 static void zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req *req)
864 struct zfcp_unit *unit = req->data;
865 union fsf_status_qual *fsq = &req->qtcb->header.fsf_status_qual;
867 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
870 switch (req->qtcb->header.fsf_status) {
871 case FSF_PORT_HANDLE_NOT_VALID:
872 if (fsq->word[0] == fsq->word[1]) {
873 zfcp_erp_adapter_reopen(unit->port->adapter, 0,
875 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
878 case FSF_LUN_HANDLE_NOT_VALID:
879 if (fsq->word[0] == fsq->word[1]) {
880 zfcp_erp_port_reopen(unit->port, 0, "fsafch2", req);
881 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
884 case FSF_FCP_COMMAND_DOES_NOT_EXIST:
885 req->status |= ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED;
888 zfcp_erp_port_boxed(unit->port, "fsafch3", req);
889 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
892 zfcp_erp_unit_boxed(unit, "fsafch4", req);
893 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
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_fsf_ct_els *ct = req->data;
965 struct fsf_qtcb_header *header = &req->qtcb->header;
967 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;
993 case FSF_PORT_HANDLE_NOT_VALID:
994 zfcp_erp_adapter_reopen(adapter, 0, "fsscth1", req);
996 case FSF_GENERIC_COMMAND_REJECTED:
997 case FSF_PAYLOAD_SIZE_MISMATCH:
998 case FSF_REQUEST_SIZE_TOO_LARGE:
999 case FSF_RESPONSE_SIZE_TOO_LARGE:
1000 case FSF_SBAL_MISMATCH:
1001 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1007 ct->handler(ct->handler_data);
1010 static void zfcp_fsf_setup_ct_els_unchained(struct qdio_buffer_element *sbale,
1011 struct scatterlist *sg_req,
1012 struct scatterlist *sg_resp)
1014 sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE_READ;
1015 sbale[2].addr = sg_virt(sg_req);
1016 sbale[2].length = sg_req->length;
1017 sbale[3].addr = sg_virt(sg_resp);
1018 sbale[3].length = sg_resp->length;
1019 sbale[3].flags |= SBAL_FLAGS_LAST_ENTRY;
1022 static int zfcp_fsf_one_sbal(struct scatterlist *sg)
1024 return sg_is_last(sg) && sg->length <= PAGE_SIZE;
1027 static int zfcp_fsf_setup_ct_els_sbals(struct zfcp_fsf_req *req,
1028 struct scatterlist *sg_req,
1029 struct scatterlist *sg_resp,
1032 struct zfcp_adapter *adapter = req->adapter;
1033 struct qdio_buffer_element *sbale = zfcp_qdio_sbale_req(adapter->qdio,
1035 u32 feat = adapter->adapter_features;
1038 if (!(feat & FSF_FEATURE_ELS_CT_CHAINED_SBALS)) {
1039 if (!zfcp_fsf_one_sbal(sg_req) || !zfcp_fsf_one_sbal(sg_resp))
1042 zfcp_fsf_setup_ct_els_unchained(sbale, sg_req, sg_resp);
1046 /* use single, unchained SBAL if it can hold the request */
1047 if (zfcp_fsf_one_sbal(sg_req) && zfcp_fsf_one_sbal(sg_resp)) {
1048 zfcp_fsf_setup_ct_els_unchained(sbale, sg_req, sg_resp);
1052 bytes = zfcp_qdio_sbals_from_sg(adapter->qdio, &req->queue_req,
1053 SBAL_FLAGS0_TYPE_WRITE_READ,
1057 req->qtcb->bottom.support.req_buf_length = bytes;
1058 req->queue_req.sbale_curr = ZFCP_LAST_SBALE_PER_SBAL;
1060 bytes = zfcp_qdio_sbals_from_sg(adapter->qdio, &req->queue_req,
1061 SBAL_FLAGS0_TYPE_WRITE_READ,
1062 sg_resp, max_sbals);
1063 req->qtcb->bottom.support.resp_buf_length = bytes;
1070 static int zfcp_fsf_setup_ct_els(struct zfcp_fsf_req *req,
1071 struct scatterlist *sg_req,
1072 struct scatterlist *sg_resp,
1073 int max_sbals, unsigned int timeout)
1077 ret = zfcp_fsf_setup_ct_els_sbals(req, sg_req, sg_resp, max_sbals);
1081 /* common settings for ct/gs and els requests */
1083 timeout = 255; /* max value accepted by hardware */
1084 req->qtcb->bottom.support.service_class = FSF_CLASS_3;
1085 req->qtcb->bottom.support.timeout = timeout;
1086 zfcp_fsf_start_timer(req, (timeout + 10) * HZ);
1092 * zfcp_fsf_send_ct - initiate a Generic Service request (FC-GS)
1093 * @ct: pointer to struct zfcp_send_ct with data for request
1094 * @pool: if non-null this mempool is used to allocate struct zfcp_fsf_req
1096 int zfcp_fsf_send_ct(struct zfcp_fc_wka_port *wka_port,
1097 struct zfcp_fsf_ct_els *ct, mempool_t *pool,
1098 unsigned int timeout)
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, timeout);
1121 req->handler = zfcp_fsf_send_ct_handler;
1122 req->qtcb->header.port_handle = wka_port->handle;
1125 zfcp_dbf_san_ct_request(req, wka_port->d_id);
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_fsf_ct_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 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1163 case FSF_SQ_RETRY_IF_POSSIBLE:
1164 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1168 case FSF_ELS_COMMAND_REJECTED:
1169 case FSF_PAYLOAD_SIZE_MISMATCH:
1170 case FSF_REQUEST_SIZE_TOO_LARGE:
1171 case FSF_RESPONSE_SIZE_TOO_LARGE:
1173 case FSF_ACCESS_DENIED:
1175 zfcp_fsf_access_denied_port(req, port);
1177 case FSF_SBAL_MISMATCH:
1178 /* should never occure, avoided in zfcp_fsf_send_els */
1181 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1185 if (send_els->handler)
1186 send_els->handler(send_els->handler_data);
1190 * zfcp_fsf_send_els - initiate an ELS command (FC-FS)
1191 * @els: pointer to struct zfcp_send_els with data for the command
1193 int zfcp_fsf_send_els(struct zfcp_adapter *adapter, u32 d_id,
1194 struct zfcp_fsf_ct_els *els, unsigned int timeout)
1196 struct zfcp_fsf_req *req;
1197 struct zfcp_qdio *qdio = adapter->qdio;
1200 spin_lock_bh(&qdio->req_q_lock);
1201 if (zfcp_fsf_req_sbal_get(qdio))
1204 req = zfcp_fsf_req_create(qdio, FSF_QTCB_SEND_ELS, NULL);
1211 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1212 ret = zfcp_fsf_setup_ct_els(req, els->req, els->resp, 2, timeout);
1217 hton24(req->qtcb->bottom.support.d_id, d_id);
1218 req->handler = zfcp_fsf_send_els_handler;
1221 zfcp_dbf_san_els_request(req);
1223 ret = zfcp_fsf_req_send(req);
1230 zfcp_fsf_req_free(req);
1232 spin_unlock_bh(&qdio->req_q_lock);
1236 int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action)
1238 struct qdio_buffer_element *sbale;
1239 struct zfcp_fsf_req *req;
1240 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1243 spin_lock_bh(&qdio->req_q_lock);
1244 if (zfcp_fsf_req_sbal_get(qdio))
1247 req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_CONFIG_DATA,
1248 qdio->adapter->pool.erp_req);
1251 retval = PTR_ERR(req);
1255 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1256 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
1257 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
1258 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
1260 req->qtcb->bottom.config.feature_selection =
1262 FSF_FEATURE_LUN_SHARING |
1263 FSF_FEATURE_NOTIFICATION_LOST |
1264 FSF_FEATURE_UPDATE_ALERT;
1265 req->erp_action = erp_action;
1266 req->handler = zfcp_fsf_exchange_config_data_handler;
1267 erp_action->fsf_req_id = req->req_id;
1269 zfcp_fsf_start_erp_timer(req);
1270 retval = zfcp_fsf_req_send(req);
1272 zfcp_fsf_req_free(req);
1273 erp_action->fsf_req_id = 0;
1276 spin_unlock_bh(&qdio->req_q_lock);
1280 int zfcp_fsf_exchange_config_data_sync(struct zfcp_qdio *qdio,
1281 struct fsf_qtcb_bottom_config *data)
1283 struct qdio_buffer_element *sbale;
1284 struct zfcp_fsf_req *req = NULL;
1287 spin_lock_bh(&qdio->req_q_lock);
1288 if (zfcp_fsf_req_sbal_get(qdio))
1291 req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_CONFIG_DATA, NULL);
1294 retval = PTR_ERR(req);
1298 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
1299 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
1300 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
1301 req->handler = zfcp_fsf_exchange_config_data_handler;
1303 req->qtcb->bottom.config.feature_selection =
1305 FSF_FEATURE_LUN_SHARING |
1306 FSF_FEATURE_NOTIFICATION_LOST |
1307 FSF_FEATURE_UPDATE_ALERT;
1312 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1313 retval = zfcp_fsf_req_send(req);
1314 spin_unlock_bh(&qdio->req_q_lock);
1316 wait_for_completion(&req->completion);
1318 zfcp_fsf_req_free(req);
1322 spin_unlock_bh(&qdio->req_q_lock);
1327 * zfcp_fsf_exchange_port_data - request information about local port
1328 * @erp_action: ERP action for the adapter for which port data is requested
1329 * Returns: 0 on success, error otherwise
1331 int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action)
1333 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1334 struct qdio_buffer_element *sbale;
1335 struct zfcp_fsf_req *req;
1338 if (!(qdio->adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT))
1341 spin_lock_bh(&qdio->req_q_lock);
1342 if (zfcp_fsf_req_sbal_get(qdio))
1345 req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_PORT_DATA,
1346 qdio->adapter->pool.erp_req);
1349 retval = PTR_ERR(req);
1353 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1354 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
1355 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
1356 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
1358 req->handler = zfcp_fsf_exchange_port_data_handler;
1359 req->erp_action = erp_action;
1360 erp_action->fsf_req_id = req->req_id;
1362 zfcp_fsf_start_erp_timer(req);
1363 retval = zfcp_fsf_req_send(req);
1365 zfcp_fsf_req_free(req);
1366 erp_action->fsf_req_id = 0;
1369 spin_unlock_bh(&qdio->req_q_lock);
1374 * zfcp_fsf_exchange_port_data_sync - request information about local port
1375 * @qdio: pointer to struct zfcp_qdio
1376 * @data: pointer to struct fsf_qtcb_bottom_port
1377 * Returns: 0 on success, error otherwise
1379 int zfcp_fsf_exchange_port_data_sync(struct zfcp_qdio *qdio,
1380 struct fsf_qtcb_bottom_port *data)
1382 struct qdio_buffer_element *sbale;
1383 struct zfcp_fsf_req *req = NULL;
1386 if (!(qdio->adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT))
1389 spin_lock_bh(&qdio->req_q_lock);
1390 if (zfcp_fsf_req_sbal_get(qdio))
1393 req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_PORT_DATA, NULL);
1396 retval = PTR_ERR(req);
1403 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
1404 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
1405 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
1407 req->handler = zfcp_fsf_exchange_port_data_handler;
1408 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1409 retval = zfcp_fsf_req_send(req);
1410 spin_unlock_bh(&qdio->req_q_lock);
1413 wait_for_completion(&req->completion);
1415 zfcp_fsf_req_free(req);
1420 spin_unlock_bh(&qdio->req_q_lock);
1424 static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req *req)
1426 struct zfcp_port *port = req->data;
1427 struct fsf_qtcb_header *header = &req->qtcb->header;
1428 struct fc_els_flogi *plogi;
1430 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1433 switch (header->fsf_status) {
1434 case FSF_PORT_ALREADY_OPEN:
1436 case FSF_ACCESS_DENIED:
1437 zfcp_fsf_access_denied_port(req, port);
1439 case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED:
1440 dev_warn(&req->adapter->ccw_device->dev,
1441 "Not enough FCP adapter resources to open "
1442 "remote port 0x%016Lx\n",
1443 (unsigned long long)port->wwpn);
1444 zfcp_erp_port_failed(port, "fsoph_1", req);
1445 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1447 case FSF_ADAPTER_STATUS_AVAILABLE:
1448 switch (header->fsf_status_qual.word[0]) {
1449 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1450 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1451 case FSF_SQ_NO_RETRY_POSSIBLE:
1452 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1457 port->handle = header->port_handle;
1458 atomic_set_mask(ZFCP_STATUS_COMMON_OPEN |
1459 ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
1460 atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED |
1461 ZFCP_STATUS_COMMON_ACCESS_BOXED,
1463 /* check whether D_ID has changed during open */
1465 * FIXME: This check is not airtight, as the FCP channel does
1466 * not monitor closures of target port connections caused on
1467 * the remote side. Thus, they might miss out on invalidating
1468 * locally cached WWPNs (and other N_Port parameters) of gone
1469 * target ports. So, our heroic attempt to make things safe
1470 * could be undermined by 'open port' response data tagged with
1471 * obsolete WWPNs. Another reason to monitor potential
1472 * connection closures ourself at least (by interpreting
1473 * incoming ELS' and unsolicited status). It just crosses my
1474 * mind that one should be able to cross-check by means of
1475 * another GID_PN straight after a port has been opened.
1476 * Alternately, an ADISC/PDISC ELS should suffice, as well.
1478 plogi = (struct fc_els_flogi *) req->qtcb->bottom.support.els;
1479 if (req->qtcb->bottom.support.els1_length >=
1481 zfcp_fc_plogi_evaluate(port, plogi);
1483 case FSF_UNKNOWN_OP_SUBTYPE:
1484 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1489 put_device(&port->sysfs_device);
1493 * zfcp_fsf_open_port - create and send open port request
1494 * @erp_action: pointer to struct zfcp_erp_action
1495 * Returns: 0 on success, error otherwise
1497 int zfcp_fsf_open_port(struct zfcp_erp_action *erp_action)
1499 struct qdio_buffer_element *sbale;
1500 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1501 struct zfcp_port *port = erp_action->port;
1502 struct zfcp_fsf_req *req;
1505 spin_lock_bh(&qdio->req_q_lock);
1506 if (zfcp_fsf_req_sbal_get(qdio))
1509 req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_PORT_WITH_DID,
1510 qdio->adapter->pool.erp_req);
1513 retval = PTR_ERR(req);
1517 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1518 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
1519 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
1520 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
1522 req->handler = zfcp_fsf_open_port_handler;
1523 hton24(req->qtcb->bottom.support.d_id, port->d_id);
1525 req->erp_action = erp_action;
1526 erp_action->fsf_req_id = req->req_id;
1527 get_device(&port->sysfs_device);
1529 zfcp_fsf_start_erp_timer(req);
1530 retval = zfcp_fsf_req_send(req);
1532 zfcp_fsf_req_free(req);
1533 erp_action->fsf_req_id = 0;
1534 put_device(&port->sysfs_device);
1537 spin_unlock_bh(&qdio->req_q_lock);
1541 static void zfcp_fsf_close_port_handler(struct zfcp_fsf_req *req)
1543 struct zfcp_port *port = req->data;
1545 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1548 switch (req->qtcb->header.fsf_status) {
1549 case FSF_PORT_HANDLE_NOT_VALID:
1550 zfcp_erp_adapter_reopen(port->adapter, 0, "fscph_1", req);
1551 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1553 case FSF_ADAPTER_STATUS_AVAILABLE:
1556 zfcp_erp_modify_port_status(port, "fscph_2", req,
1557 ZFCP_STATUS_COMMON_OPEN,
1564 * zfcp_fsf_close_port - create and send close port request
1565 * @erp_action: pointer to struct zfcp_erp_action
1566 * Returns: 0 on success, error otherwise
1568 int zfcp_fsf_close_port(struct zfcp_erp_action *erp_action)
1570 struct qdio_buffer_element *sbale;
1571 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1572 struct zfcp_fsf_req *req;
1575 spin_lock_bh(&qdio->req_q_lock);
1576 if (zfcp_fsf_req_sbal_get(qdio))
1579 req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PORT,
1580 qdio->adapter->pool.erp_req);
1583 retval = PTR_ERR(req);
1587 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1588 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
1589 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
1590 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
1592 req->handler = zfcp_fsf_close_port_handler;
1593 req->data = erp_action->port;
1594 req->erp_action = erp_action;
1595 req->qtcb->header.port_handle = erp_action->port->handle;
1596 erp_action->fsf_req_id = req->req_id;
1598 zfcp_fsf_start_erp_timer(req);
1599 retval = zfcp_fsf_req_send(req);
1601 zfcp_fsf_req_free(req);
1602 erp_action->fsf_req_id = 0;
1605 spin_unlock_bh(&qdio->req_q_lock);
1609 static void zfcp_fsf_open_wka_port_handler(struct zfcp_fsf_req *req)
1611 struct zfcp_fc_wka_port *wka_port = req->data;
1612 struct fsf_qtcb_header *header = &req->qtcb->header;
1614 if (req->status & ZFCP_STATUS_FSFREQ_ERROR) {
1615 wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE;
1619 switch (header->fsf_status) {
1620 case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED:
1621 dev_warn(&req->adapter->ccw_device->dev,
1622 "Opening WKA port 0x%x failed\n", wka_port->d_id);
1624 case FSF_ADAPTER_STATUS_AVAILABLE:
1625 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1627 case FSF_ACCESS_DENIED:
1628 wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE;
1631 wka_port->handle = header->port_handle;
1633 case FSF_PORT_ALREADY_OPEN:
1634 wka_port->status = ZFCP_FC_WKA_PORT_ONLINE;
1637 wake_up(&wka_port->completion_wq);
1641 * zfcp_fsf_open_wka_port - create and send open wka-port request
1642 * @wka_port: pointer to struct zfcp_fc_wka_port
1643 * Returns: 0 on success, error otherwise
1645 int zfcp_fsf_open_wka_port(struct zfcp_fc_wka_port *wka_port)
1647 struct qdio_buffer_element *sbale;
1648 struct zfcp_qdio *qdio = wka_port->adapter->qdio;
1649 struct zfcp_fsf_req *req;
1652 spin_lock_bh(&qdio->req_q_lock);
1653 if (zfcp_fsf_req_sbal_get(qdio))
1656 req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_PORT_WITH_DID,
1657 qdio->adapter->pool.erp_req);
1659 if (unlikely(IS_ERR(req))) {
1660 retval = PTR_ERR(req);
1664 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1665 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
1666 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
1667 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
1669 req->handler = zfcp_fsf_open_wka_port_handler;
1670 hton24(req->qtcb->bottom.support.d_id, wka_port->d_id);
1671 req->data = wka_port;
1673 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1674 retval = zfcp_fsf_req_send(req);
1676 zfcp_fsf_req_free(req);
1678 spin_unlock_bh(&qdio->req_q_lock);
1682 static void zfcp_fsf_close_wka_port_handler(struct zfcp_fsf_req *req)
1684 struct zfcp_fc_wka_port *wka_port = req->data;
1686 if (req->qtcb->header.fsf_status == FSF_PORT_HANDLE_NOT_VALID) {
1687 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1688 zfcp_erp_adapter_reopen(wka_port->adapter, 0, "fscwph1", req);
1691 wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE;
1692 wake_up(&wka_port->completion_wq);
1696 * zfcp_fsf_close_wka_port - create and send close wka port request
1697 * @wka_port: WKA port to open
1698 * Returns: 0 on success, error otherwise
1700 int zfcp_fsf_close_wka_port(struct zfcp_fc_wka_port *wka_port)
1702 struct qdio_buffer_element *sbale;
1703 struct zfcp_qdio *qdio = wka_port->adapter->qdio;
1704 struct zfcp_fsf_req *req;
1707 spin_lock_bh(&qdio->req_q_lock);
1708 if (zfcp_fsf_req_sbal_get(qdio))
1711 req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PORT,
1712 qdio->adapter->pool.erp_req);
1714 if (unlikely(IS_ERR(req))) {
1715 retval = PTR_ERR(req);
1719 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1720 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
1721 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
1722 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
1724 req->handler = zfcp_fsf_close_wka_port_handler;
1725 req->data = wka_port;
1726 req->qtcb->header.port_handle = wka_port->handle;
1728 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1729 retval = zfcp_fsf_req_send(req);
1731 zfcp_fsf_req_free(req);
1733 spin_unlock_bh(&qdio->req_q_lock);
1737 static void zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *req)
1739 struct zfcp_port *port = req->data;
1740 struct fsf_qtcb_header *header = &req->qtcb->header;
1741 struct zfcp_unit *unit;
1743 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1746 switch (header->fsf_status) {
1747 case FSF_PORT_HANDLE_NOT_VALID:
1748 zfcp_erp_adapter_reopen(port->adapter, 0, "fscpph1", req);
1749 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1751 case FSF_ACCESS_DENIED:
1752 zfcp_fsf_access_denied_port(req, port);
1754 case FSF_PORT_BOXED:
1755 /* can't use generic zfcp_erp_modify_port_status because
1756 * ZFCP_STATUS_COMMON_OPEN must not be reset for the port */
1757 atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
1758 read_lock(&port->unit_list_lock);
1759 list_for_each_entry(unit, &port->unit_list, list)
1760 atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN,
1762 read_unlock(&port->unit_list_lock);
1763 zfcp_erp_port_boxed(port, "fscpph2", req);
1764 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1766 case FSF_ADAPTER_STATUS_AVAILABLE:
1767 switch (header->fsf_status_qual.word[0]) {
1768 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1770 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1771 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1776 /* can't use generic zfcp_erp_modify_port_status because
1777 * ZFCP_STATUS_COMMON_OPEN must not be reset for the port
1779 atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
1780 read_lock(&port->unit_list_lock);
1781 list_for_each_entry(unit, &port->unit_list, list)
1782 atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN,
1784 read_unlock(&port->unit_list_lock);
1790 * zfcp_fsf_close_physical_port - close physical port
1791 * @erp_action: pointer to struct zfcp_erp_action
1792 * Returns: 0 on success
1794 int zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action)
1796 struct qdio_buffer_element *sbale;
1797 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1798 struct zfcp_fsf_req *req;
1801 spin_lock_bh(&qdio->req_q_lock);
1802 if (zfcp_fsf_req_sbal_get(qdio))
1805 req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PHYSICAL_PORT,
1806 qdio->adapter->pool.erp_req);
1809 retval = PTR_ERR(req);
1813 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1814 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
1815 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
1816 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
1818 req->data = erp_action->port;
1819 req->qtcb->header.port_handle = erp_action->port->handle;
1820 req->erp_action = erp_action;
1821 req->handler = zfcp_fsf_close_physical_port_handler;
1822 erp_action->fsf_req_id = req->req_id;
1824 zfcp_fsf_start_erp_timer(req);
1825 retval = zfcp_fsf_req_send(req);
1827 zfcp_fsf_req_free(req);
1828 erp_action->fsf_req_id = 0;
1831 spin_unlock_bh(&qdio->req_q_lock);
1835 static void zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *req)
1837 struct zfcp_adapter *adapter = req->adapter;
1838 struct zfcp_unit *unit = req->data;
1839 struct fsf_qtcb_header *header = &req->qtcb->header;
1840 struct fsf_qtcb_bottom_support *bottom = &req->qtcb->bottom.support;
1841 struct fsf_queue_designator *queue_designator =
1842 &header->fsf_status_qual.fsf_queue_designator;
1843 int exclusive, readwrite;
1845 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1848 atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED |
1849 ZFCP_STATUS_COMMON_ACCESS_BOXED |
1850 ZFCP_STATUS_UNIT_SHARED |
1851 ZFCP_STATUS_UNIT_READONLY,
1854 switch (header->fsf_status) {
1856 case FSF_PORT_HANDLE_NOT_VALID:
1857 zfcp_erp_adapter_reopen(unit->port->adapter, 0, "fsouh_1", req);
1859 case FSF_LUN_ALREADY_OPEN:
1861 case FSF_ACCESS_DENIED:
1862 zfcp_fsf_access_denied_unit(req, unit);
1863 atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED, &unit->status);
1864 atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status);
1866 case FSF_PORT_BOXED:
1867 zfcp_erp_port_boxed(unit->port, "fsouh_2", req);
1868 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1870 case FSF_LUN_SHARING_VIOLATION:
1871 if (header->fsf_status_qual.word[0])
1872 dev_warn(&adapter->ccw_device->dev,
1873 "LUN 0x%Lx on port 0x%Lx is already in "
1874 "use by CSS%d, MIF Image ID %x\n",
1875 (unsigned long long)unit->fcp_lun,
1876 (unsigned long long)unit->port->wwpn,
1877 queue_designator->cssid,
1878 queue_designator->hla);
1880 zfcp_act_eval_err(adapter,
1881 header->fsf_status_qual.word[2]);
1882 zfcp_erp_unit_access_denied(unit, "fsouh_3", req);
1883 atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED, &unit->status);
1884 atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status);
1885 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1887 case FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED:
1888 dev_warn(&adapter->ccw_device->dev,
1889 "No handle is available for LUN "
1890 "0x%016Lx on port 0x%016Lx\n",
1891 (unsigned long long)unit->fcp_lun,
1892 (unsigned long long)unit->port->wwpn);
1893 zfcp_erp_unit_failed(unit, "fsouh_4", req);
1895 case FSF_INVALID_COMMAND_OPTION:
1896 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1898 case FSF_ADAPTER_STATUS_AVAILABLE:
1899 switch (header->fsf_status_qual.word[0]) {
1900 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1901 zfcp_fc_test_link(unit->port);
1903 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1904 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1910 unit->handle = header->lun_handle;
1911 atomic_set_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status);
1913 if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE) &&
1914 (adapter->adapter_features & FSF_FEATURE_LUN_SHARING) &&
1915 !zfcp_ccw_priv_sch(adapter)) {
1916 exclusive = (bottom->lun_access_info &
1917 FSF_UNIT_ACCESS_EXCLUSIVE);
1918 readwrite = (bottom->lun_access_info &
1919 FSF_UNIT_ACCESS_OUTBOUND_TRANSFER);
1922 atomic_set_mask(ZFCP_STATUS_UNIT_SHARED,
1926 atomic_set_mask(ZFCP_STATUS_UNIT_READONLY,
1928 dev_info(&adapter->ccw_device->dev,
1929 "SCSI device at LUN 0x%016Lx on port "
1930 "0x%016Lx opened read-only\n",
1931 (unsigned long long)unit->fcp_lun,
1932 (unsigned long long)unit->port->wwpn);
1935 if (exclusive && !readwrite) {
1936 dev_err(&adapter->ccw_device->dev,
1937 "Exclusive read-only access not "
1938 "supported (unit 0x%016Lx, "
1940 (unsigned long long)unit->fcp_lun,
1941 (unsigned long long)unit->port->wwpn);
1942 zfcp_erp_unit_failed(unit, "fsouh_5", req);
1943 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1944 zfcp_erp_unit_shutdown(unit, 0, "fsouh_6", req);
1945 } else if (!exclusive && readwrite) {
1946 dev_err(&adapter->ccw_device->dev,
1947 "Shared read-write access not "
1948 "supported (unit 0x%016Lx, port "
1950 (unsigned long long)unit->fcp_lun,
1951 (unsigned long long)unit->port->wwpn);
1952 zfcp_erp_unit_failed(unit, "fsouh_7", req);
1953 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1954 zfcp_erp_unit_shutdown(unit, 0, "fsouh_8", req);
1962 * zfcp_fsf_open_unit - open unit
1963 * @erp_action: pointer to struct zfcp_erp_action
1964 * Returns: 0 on success, error otherwise
1966 int zfcp_fsf_open_unit(struct zfcp_erp_action *erp_action)
1968 struct qdio_buffer_element *sbale;
1969 struct zfcp_adapter *adapter = erp_action->adapter;
1970 struct zfcp_qdio *qdio = adapter->qdio;
1971 struct zfcp_fsf_req *req;
1974 spin_lock_bh(&qdio->req_q_lock);
1975 if (zfcp_fsf_req_sbal_get(qdio))
1978 req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_LUN,
1979 adapter->pool.erp_req);
1982 retval = PTR_ERR(req);
1986 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1987 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
1988 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
1989 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
1991 req->qtcb->header.port_handle = erp_action->port->handle;
1992 req->qtcb->bottom.support.fcp_lun = erp_action->unit->fcp_lun;
1993 req->handler = zfcp_fsf_open_unit_handler;
1994 req->data = erp_action->unit;
1995 req->erp_action = erp_action;
1996 erp_action->fsf_req_id = req->req_id;
1998 if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE))
1999 req->qtcb->bottom.support.option = FSF_OPEN_LUN_SUPPRESS_BOXING;
2001 zfcp_fsf_start_erp_timer(req);
2002 retval = zfcp_fsf_req_send(req);
2004 zfcp_fsf_req_free(req);
2005 erp_action->fsf_req_id = 0;
2008 spin_unlock_bh(&qdio->req_q_lock);
2012 static void zfcp_fsf_close_unit_handler(struct zfcp_fsf_req *req)
2014 struct zfcp_unit *unit = req->data;
2016 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
2019 switch (req->qtcb->header.fsf_status) {
2020 case FSF_PORT_HANDLE_NOT_VALID:
2021 zfcp_erp_adapter_reopen(unit->port->adapter, 0, "fscuh_1", req);
2022 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2024 case FSF_LUN_HANDLE_NOT_VALID:
2025 zfcp_erp_port_reopen(unit->port, 0, "fscuh_2", req);
2026 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2028 case FSF_PORT_BOXED:
2029 zfcp_erp_port_boxed(unit->port, "fscuh_3", req);
2030 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2032 case FSF_ADAPTER_STATUS_AVAILABLE:
2033 switch (req->qtcb->header.fsf_status_qual.word[0]) {
2034 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
2035 zfcp_fc_test_link(unit->port);
2037 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
2038 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2043 atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status);
2049 * zfcp_fsf_close_unit - close zfcp unit
2050 * @erp_action: pointer to struct zfcp_unit
2051 * Returns: 0 on success, error otherwise
2053 int zfcp_fsf_close_unit(struct zfcp_erp_action *erp_action)
2055 struct qdio_buffer_element *sbale;
2056 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
2057 struct zfcp_fsf_req *req;
2060 spin_lock_bh(&qdio->req_q_lock);
2061 if (zfcp_fsf_req_sbal_get(qdio))
2064 req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_LUN,
2065 qdio->adapter->pool.erp_req);
2068 retval = PTR_ERR(req);
2072 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
2073 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
2074 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
2075 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
2077 req->qtcb->header.port_handle = erp_action->port->handle;
2078 req->qtcb->header.lun_handle = erp_action->unit->handle;
2079 req->handler = zfcp_fsf_close_unit_handler;
2080 req->data = erp_action->unit;
2081 req->erp_action = erp_action;
2082 erp_action->fsf_req_id = req->req_id;
2084 zfcp_fsf_start_erp_timer(req);
2085 retval = zfcp_fsf_req_send(req);
2087 zfcp_fsf_req_free(req);
2088 erp_action->fsf_req_id = 0;
2091 spin_unlock_bh(&qdio->req_q_lock);
2095 static void zfcp_fsf_update_lat(struct fsf_latency_record *lat_rec, u32 lat)
2097 lat_rec->sum += lat;
2098 lat_rec->min = min(lat_rec->min, lat);
2099 lat_rec->max = max(lat_rec->max, lat);
2102 static void zfcp_fsf_req_trace(struct zfcp_fsf_req *req, struct scsi_cmnd *scsi)
2104 struct fsf_qual_latency_info *lat_in;
2105 struct latency_cont *lat = NULL;
2106 struct zfcp_unit *unit = req->unit;
2107 struct zfcp_blk_drv_data blktrc;
2108 int ticks = req->adapter->timer_ticks;
2110 lat_in = &req->qtcb->prefix.prot_status_qual.latency_info;
2113 blktrc.magic = ZFCP_BLK_DRV_DATA_MAGIC;
2114 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
2115 blktrc.flags |= ZFCP_BLK_REQ_ERROR;
2116 blktrc.inb_usage = req->queue_req.qdio_inb_usage;
2117 blktrc.outb_usage = req->queue_req.qdio_outb_usage;
2119 if (req->adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA) {
2120 blktrc.flags |= ZFCP_BLK_LAT_VALID;
2121 blktrc.channel_lat = lat_in->channel_lat * ticks;
2122 blktrc.fabric_lat = lat_in->fabric_lat * ticks;
2124 switch (req->qtcb->bottom.io.data_direction) {
2125 case FSF_DATADIR_READ:
2126 lat = &unit->latencies.read;
2128 case FSF_DATADIR_WRITE:
2129 lat = &unit->latencies.write;
2131 case FSF_DATADIR_CMND:
2132 lat = &unit->latencies.cmd;
2137 spin_lock(&unit->latencies.lock);
2138 zfcp_fsf_update_lat(&lat->channel, lat_in->channel_lat);
2139 zfcp_fsf_update_lat(&lat->fabric, lat_in->fabric_lat);
2141 spin_unlock(&unit->latencies.lock);
2145 blk_add_driver_data(scsi->request->q, scsi->request, &blktrc,
2149 static void zfcp_fsf_send_fcp_command_task_handler(struct zfcp_fsf_req *req)
2151 struct scsi_cmnd *scpnt;
2152 struct fcp_resp_with_ext *fcp_rsp;
2153 unsigned long flags;
2155 read_lock_irqsave(&req->adapter->abort_lock, flags);
2158 if (unlikely(!scpnt)) {
2159 read_unlock_irqrestore(&req->adapter->abort_lock, flags);
2163 if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) {
2164 set_host_byte(scpnt, DID_TRANSPORT_DISRUPTED);
2165 goto skip_fsfstatus;
2168 fcp_rsp = (struct fcp_resp_with_ext *) &req->qtcb->bottom.io.fcp_rsp;
2169 zfcp_fc_eval_fcp_rsp(fcp_rsp, scpnt);
2171 zfcp_fsf_req_trace(req, scpnt);
2174 if (scpnt->result != 0)
2175 zfcp_dbf_scsi_result("erro", 3, req->adapter->dbf, scpnt, req);
2176 else if (scpnt->retries > 0)
2177 zfcp_dbf_scsi_result("retr", 4, req->adapter->dbf, scpnt, req);
2179 zfcp_dbf_scsi_result("norm", 6, req->adapter->dbf, scpnt, req);
2181 scpnt->host_scribble = NULL;
2182 (scpnt->scsi_done) (scpnt);
2184 * We must hold this lock until scsi_done has been called.
2185 * Otherwise we may call scsi_done after abort regarding this
2186 * command has completed.
2187 * Note: scsi_done must not block!
2189 read_unlock_irqrestore(&req->adapter->abort_lock, flags);
2192 static void zfcp_fsf_send_fcp_ctm_handler(struct zfcp_fsf_req *req)
2194 struct fcp_resp_with_ext *fcp_rsp;
2195 struct fcp_resp_rsp_info *rsp_info;
2197 fcp_rsp = (struct fcp_resp_with_ext *) &req->qtcb->bottom.io.fcp_rsp;
2198 rsp_info = (struct fcp_resp_rsp_info *) &fcp_rsp[1];
2200 if ((rsp_info->rsp_code != FCP_TMF_CMPL) ||
2201 (req->status & ZFCP_STATUS_FSFREQ_ERROR))
2202 req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED;
2206 static void zfcp_fsf_send_fcp_command_handler(struct zfcp_fsf_req *req)
2208 struct zfcp_unit *unit;
2209 struct fsf_qtcb_header *header = &req->qtcb->header;
2211 if (unlikely(req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT))
2216 if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR))
2217 goto skip_fsfstatus;
2219 switch (header->fsf_status) {
2220 case FSF_HANDLE_MISMATCH:
2221 case FSF_PORT_HANDLE_NOT_VALID:
2222 zfcp_erp_adapter_reopen(unit->port->adapter, 0, "fssfch1", req);
2223 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2225 case FSF_FCPLUN_NOT_VALID:
2226 case FSF_LUN_HANDLE_NOT_VALID:
2227 zfcp_erp_port_reopen(unit->port, 0, "fssfch2", req);
2228 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2230 case FSF_SERVICE_CLASS_NOT_SUPPORTED:
2231 zfcp_fsf_class_not_supp(req);
2233 case FSF_ACCESS_DENIED:
2234 zfcp_fsf_access_denied_unit(req, unit);
2236 case FSF_DIRECTION_INDICATOR_NOT_VALID:
2237 dev_err(&req->adapter->ccw_device->dev,
2238 "Incorrect direction %d, unit 0x%016Lx on port "
2239 "0x%016Lx closed\n",
2240 req->qtcb->bottom.io.data_direction,
2241 (unsigned long long)unit->fcp_lun,
2242 (unsigned long long)unit->port->wwpn);
2243 zfcp_erp_adapter_shutdown(unit->port->adapter, 0, "fssfch3",
2245 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2247 case FSF_CMND_LENGTH_NOT_VALID:
2248 dev_err(&req->adapter->ccw_device->dev,
2249 "Incorrect CDB length %d, unit 0x%016Lx on "
2250 "port 0x%016Lx closed\n",
2251 req->qtcb->bottom.io.fcp_cmnd_length,
2252 (unsigned long long)unit->fcp_lun,
2253 (unsigned long long)unit->port->wwpn);
2254 zfcp_erp_adapter_shutdown(unit->port->adapter, 0, "fssfch4",
2256 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2258 case FSF_PORT_BOXED:
2259 zfcp_erp_port_boxed(unit->port, "fssfch5", req);
2260 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2263 zfcp_erp_unit_boxed(unit, "fssfch6", req);
2264 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2266 case FSF_ADAPTER_STATUS_AVAILABLE:
2267 if (header->fsf_status_qual.word[0] ==
2268 FSF_SQ_INVOKE_LINK_TEST_PROCEDURE)
2269 zfcp_fc_test_link(unit->port);
2270 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2274 if (req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT)
2275 zfcp_fsf_send_fcp_ctm_handler(req);
2277 zfcp_fsf_send_fcp_command_task_handler(req);
2279 put_device(&unit->sysfs_device);
2284 * zfcp_fsf_send_fcp_command_task - initiate an FCP command (for a SCSI command)
2285 * @unit: unit where command is sent to
2286 * @scsi_cmnd: scsi command to be sent
2288 int zfcp_fsf_send_fcp_command_task(struct zfcp_unit *unit,
2289 struct scsi_cmnd *scsi_cmnd)
2291 struct zfcp_fsf_req *req;
2292 struct fcp_cmnd *fcp_cmnd;
2293 unsigned int sbtype = SBAL_FLAGS0_TYPE_READ;
2294 int real_bytes, retval = -EIO;
2295 struct zfcp_adapter *adapter = unit->port->adapter;
2296 struct zfcp_qdio *qdio = adapter->qdio;
2298 if (unlikely(!(atomic_read(&unit->status) &
2299 ZFCP_STATUS_COMMON_UNBLOCKED)))
2302 spin_lock(&qdio->req_q_lock);
2303 if (atomic_read(&qdio->req_q.count) <= 0) {
2304 atomic_inc(&qdio->req_q_full);
2308 req = zfcp_fsf_req_create(qdio, FSF_QTCB_FCP_CMND,
2309 adapter->pool.scsi_req);
2312 retval = PTR_ERR(req);
2316 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
2317 get_device(&unit->sysfs_device);
2319 req->data = scsi_cmnd;
2320 req->handler = zfcp_fsf_send_fcp_command_handler;
2321 req->qtcb->header.lun_handle = unit->handle;
2322 req->qtcb->header.port_handle = unit->port->handle;
2323 req->qtcb->bottom.io.service_class = FSF_CLASS_3;
2324 req->qtcb->bottom.io.fcp_cmnd_length = FCP_CMND_LEN;
2326 scsi_cmnd->host_scribble = (unsigned char *) req->req_id;
2329 * set depending on data direction:
2330 * data direction bits in SBALE (SB Type)
2331 * data direction bits in QTCB
2333 switch (scsi_cmnd->sc_data_direction) {
2335 req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND;
2337 case DMA_FROM_DEVICE:
2338 req->qtcb->bottom.io.data_direction = FSF_DATADIR_READ;
2341 req->qtcb->bottom.io.data_direction = FSF_DATADIR_WRITE;
2342 sbtype = SBAL_FLAGS0_TYPE_WRITE;
2344 case DMA_BIDIRECTIONAL:
2345 goto failed_scsi_cmnd;
2348 fcp_cmnd = (struct fcp_cmnd *) &req->qtcb->bottom.io.fcp_cmnd;
2349 zfcp_fc_scsi_to_fcp(fcp_cmnd, scsi_cmnd);
2351 real_bytes = zfcp_qdio_sbals_from_sg(qdio, &req->queue_req, sbtype,
2352 scsi_sglist(scsi_cmnd),
2353 FSF_MAX_SBALS_PER_REQ);
2354 if (unlikely(real_bytes < 0)) {
2355 if (req->queue_req.sbal_number >= FSF_MAX_SBALS_PER_REQ) {
2356 dev_err(&adapter->ccw_device->dev,
2357 "Oversize data package, unit 0x%016Lx "
2358 "on port 0x%016Lx closed\n",
2359 (unsigned long long)unit->fcp_lun,
2360 (unsigned long long)unit->port->wwpn);
2361 zfcp_erp_unit_shutdown(unit, 0, "fssfct1", req);
2364 goto failed_scsi_cmnd;
2367 retval = zfcp_fsf_req_send(req);
2368 if (unlikely(retval))
2369 goto failed_scsi_cmnd;
2374 put_device(&unit->sysfs_device);
2375 zfcp_fsf_req_free(req);
2376 scsi_cmnd->host_scribble = NULL;
2378 spin_unlock(&qdio->req_q_lock);
2383 * zfcp_fsf_send_fcp_ctm - send SCSI task management command
2384 * @unit: pointer to struct zfcp_unit
2385 * @tm_flags: unsigned byte for task management flags
2386 * Returns: on success pointer to struct fsf_req, NULL otherwise
2388 struct zfcp_fsf_req *zfcp_fsf_send_fcp_ctm(struct zfcp_unit *unit, u8 tm_flags)
2390 struct qdio_buffer_element *sbale;
2391 struct zfcp_fsf_req *req = NULL;
2392 struct fcp_cmnd *fcp_cmnd;
2393 struct zfcp_qdio *qdio = unit->port->adapter->qdio;
2395 if (unlikely(!(atomic_read(&unit->status) &
2396 ZFCP_STATUS_COMMON_UNBLOCKED)))
2399 spin_lock_bh(&qdio->req_q_lock);
2400 if (zfcp_fsf_req_sbal_get(qdio))
2403 req = zfcp_fsf_req_create(qdio, FSF_QTCB_FCP_CMND,
2404 qdio->adapter->pool.scsi_req);
2411 req->status |= ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT;
2413 req->handler = zfcp_fsf_send_fcp_command_handler;
2414 req->qtcb->header.lun_handle = unit->handle;
2415 req->qtcb->header.port_handle = unit->port->handle;
2416 req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND;
2417 req->qtcb->bottom.io.service_class = FSF_CLASS_3;
2418 req->qtcb->bottom.io.fcp_cmnd_length = FCP_CMND_LEN;
2420 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
2421 sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE;
2422 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
2424 fcp_cmnd = (struct fcp_cmnd *) &req->qtcb->bottom.io.fcp_cmnd;
2425 zfcp_fc_fcp_tm(fcp_cmnd, unit->device, tm_flags);
2427 zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT);
2428 if (!zfcp_fsf_req_send(req))
2431 zfcp_fsf_req_free(req);
2434 spin_unlock_bh(&qdio->req_q_lock);
2438 static void zfcp_fsf_control_file_handler(struct zfcp_fsf_req *req)
2443 * zfcp_fsf_control_file - control file upload/download
2444 * @adapter: pointer to struct zfcp_adapter
2445 * @fsf_cfdc: pointer to struct zfcp_fsf_cfdc
2446 * Returns: on success pointer to struct zfcp_fsf_req, NULL otherwise
2448 struct zfcp_fsf_req *zfcp_fsf_control_file(struct zfcp_adapter *adapter,
2449 struct zfcp_fsf_cfdc *fsf_cfdc)
2451 struct qdio_buffer_element *sbale;
2452 struct zfcp_qdio *qdio = adapter->qdio;
2453 struct zfcp_fsf_req *req = NULL;
2454 struct fsf_qtcb_bottom_support *bottom;
2455 int direction, retval = -EIO, bytes;
2457 if (!(adapter->adapter_features & FSF_FEATURE_CFDC))
2458 return ERR_PTR(-EOPNOTSUPP);
2460 switch (fsf_cfdc->command) {
2461 case FSF_QTCB_DOWNLOAD_CONTROL_FILE:
2462 direction = SBAL_FLAGS0_TYPE_WRITE;
2464 case FSF_QTCB_UPLOAD_CONTROL_FILE:
2465 direction = SBAL_FLAGS0_TYPE_READ;
2468 return ERR_PTR(-EINVAL);
2471 spin_lock_bh(&qdio->req_q_lock);
2472 if (zfcp_fsf_req_sbal_get(qdio))
2475 req = zfcp_fsf_req_create(qdio, fsf_cfdc->command, NULL);
2481 req->handler = zfcp_fsf_control_file_handler;
2483 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
2484 sbale[0].flags |= direction;
2486 bottom = &req->qtcb->bottom.support;
2487 bottom->operation_subtype = FSF_CFDC_OPERATION_SUBTYPE;
2488 bottom->option = fsf_cfdc->option;
2490 bytes = zfcp_qdio_sbals_from_sg(qdio, &req->queue_req,
2491 direction, fsf_cfdc->sg,
2492 FSF_MAX_SBALS_PER_REQ);
2493 if (bytes != ZFCP_CFDC_MAX_SIZE) {
2494 zfcp_fsf_req_free(req);
2498 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
2499 retval = zfcp_fsf_req_send(req);
2501 spin_unlock_bh(&qdio->req_q_lock);
2504 wait_for_completion(&req->completion);
2507 return ERR_PTR(retval);
2511 * zfcp_fsf_reqid_check - validate req_id contained in SBAL returned by QDIO
2512 * @adapter: pointer to struct zfcp_adapter
2513 * @sbal_idx: response queue index of SBAL to be processed
2515 void zfcp_fsf_reqid_check(struct zfcp_qdio *qdio, int sbal_idx)
2517 struct zfcp_adapter *adapter = qdio->adapter;
2518 struct qdio_buffer *sbal = qdio->resp_q.sbal[sbal_idx];
2519 struct qdio_buffer_element *sbale;
2520 struct zfcp_fsf_req *fsf_req;
2521 unsigned long flags, req_id;
2524 for (idx = 0; idx < QDIO_MAX_ELEMENTS_PER_BUFFER; idx++) {
2526 sbale = &sbal->element[idx];
2527 req_id = (unsigned long) sbale->addr;
2528 spin_lock_irqsave(&adapter->req_list_lock, flags);
2529 fsf_req = zfcp_reqlist_find(adapter, req_id);
2533 * Unknown request means that we have potentially memory
2534 * corruption and must stop the machine immediately.
2536 panic("error: unknown req_id (%lx) on adapter %s.\n",
2537 req_id, dev_name(&adapter->ccw_device->dev));
2539 list_del(&fsf_req->list);
2540 spin_unlock_irqrestore(&adapter->req_list_lock, flags);
2542 fsf_req->queue_req.sbal_response = sbal_idx;
2543 fsf_req->queue_req.qdio_inb_usage =
2544 atomic_read(&qdio->resp_q.count);
2545 zfcp_fsf_req_complete(fsf_req);
2547 if (likely(sbale->flags & SBAL_FLAGS_LAST_ENTRY))