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>
17 #include "zfcp_reqlist.h"
19 static void zfcp_fsf_request_timeout_handler(unsigned long data)
21 struct zfcp_adapter *adapter = (struct zfcp_adapter *) data;
22 zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED,
26 static void zfcp_fsf_start_timer(struct zfcp_fsf_req *fsf_req,
27 unsigned long timeout)
29 fsf_req->timer.function = zfcp_fsf_request_timeout_handler;
30 fsf_req->timer.data = (unsigned long) fsf_req->adapter;
31 fsf_req->timer.expires = jiffies + timeout;
32 add_timer(&fsf_req->timer);
35 static void zfcp_fsf_start_erp_timer(struct zfcp_fsf_req *fsf_req)
37 BUG_ON(!fsf_req->erp_action);
38 fsf_req->timer.function = zfcp_erp_timeout_handler;
39 fsf_req->timer.data = (unsigned long) fsf_req->erp_action;
40 fsf_req->timer.expires = jiffies + 30 * HZ;
41 add_timer(&fsf_req->timer);
44 /* association between FSF command and FSF QTCB type */
45 static u32 fsf_qtcb_type[] = {
46 [FSF_QTCB_FCP_CMND] = FSF_IO_COMMAND,
47 [FSF_QTCB_ABORT_FCP_CMND] = FSF_SUPPORT_COMMAND,
48 [FSF_QTCB_OPEN_PORT_WITH_DID] = FSF_SUPPORT_COMMAND,
49 [FSF_QTCB_OPEN_LUN] = FSF_SUPPORT_COMMAND,
50 [FSF_QTCB_CLOSE_LUN] = FSF_SUPPORT_COMMAND,
51 [FSF_QTCB_CLOSE_PORT] = FSF_SUPPORT_COMMAND,
52 [FSF_QTCB_CLOSE_PHYSICAL_PORT] = FSF_SUPPORT_COMMAND,
53 [FSF_QTCB_SEND_ELS] = FSF_SUPPORT_COMMAND,
54 [FSF_QTCB_SEND_GENERIC] = FSF_SUPPORT_COMMAND,
55 [FSF_QTCB_EXCHANGE_CONFIG_DATA] = FSF_CONFIG_COMMAND,
56 [FSF_QTCB_EXCHANGE_PORT_DATA] = FSF_PORT_COMMAND,
57 [FSF_QTCB_DOWNLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND,
58 [FSF_QTCB_UPLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND
61 static void zfcp_act_eval_err(struct zfcp_adapter *adapter, u32 table)
63 u16 subtable = table >> 16;
64 u16 rule = table & 0xffff;
65 const char *act_type[] = { "unknown", "OS", "WWPN", "DID", "LUN" };
67 if (subtable && subtable < ARRAY_SIZE(act_type))
68 dev_warn(&adapter->ccw_device->dev,
69 "Access denied according to ACT rule type %s, "
70 "rule %d\n", act_type[subtable], rule);
73 static void zfcp_fsf_access_denied_port(struct zfcp_fsf_req *req,
74 struct zfcp_port *port)
76 struct fsf_qtcb_header *header = &req->qtcb->header;
77 dev_warn(&req->adapter->ccw_device->dev,
78 "Access denied to port 0x%016Lx\n",
79 (unsigned long long)port->wwpn);
80 zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[0]);
81 zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[1]);
82 zfcp_erp_port_access_denied(port, "fspad_1", req);
83 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
86 static void zfcp_fsf_access_denied_unit(struct zfcp_fsf_req *req,
87 struct zfcp_unit *unit)
89 struct fsf_qtcb_header *header = &req->qtcb->header;
90 dev_warn(&req->adapter->ccw_device->dev,
91 "Access denied to unit 0x%016Lx on port 0x%016Lx\n",
92 (unsigned long long)unit->fcp_lun,
93 (unsigned long long)unit->port->wwpn);
94 zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[0]);
95 zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[1]);
96 zfcp_erp_unit_access_denied(unit, "fsuad_1", req);
97 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
100 static void zfcp_fsf_class_not_supp(struct zfcp_fsf_req *req)
102 dev_err(&req->adapter->ccw_device->dev, "FCP device not "
103 "operational because of an unsupported FC class\n");
104 zfcp_erp_adapter_shutdown(req->adapter, 0, "fscns_1", req);
105 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
109 * zfcp_fsf_req_free - free memory used by fsf request
110 * @fsf_req: pointer to struct zfcp_fsf_req
112 void zfcp_fsf_req_free(struct zfcp_fsf_req *req)
114 if (likely(req->pool)) {
115 if (likely(req->qtcb))
116 mempool_free(req->qtcb, req->adapter->pool.qtcb_pool);
117 mempool_free(req, req->pool);
121 if (likely(req->qtcb))
122 kmem_cache_free(zfcp_data.qtcb_cache, req->qtcb);
126 static void zfcp_fsf_status_read_port_closed(struct zfcp_fsf_req *req)
129 struct fsf_status_read_buffer *sr_buf = req->data;
130 struct zfcp_adapter *adapter = req->adapter;
131 struct zfcp_port *port;
132 int d_id = ntoh24(sr_buf->d_id);
134 read_lock_irqsave(&adapter->port_list_lock, flags);
135 list_for_each_entry(port, &adapter->port_list, list)
136 if (port->d_id == d_id) {
137 zfcp_erp_port_reopen(port, 0, "fssrpc1", req);
140 read_unlock_irqrestore(&adapter->port_list_lock, flags);
143 static void zfcp_fsf_link_down_info_eval(struct zfcp_fsf_req *req, char *id,
144 struct fsf_link_down_info *link_down)
146 struct zfcp_adapter *adapter = req->adapter;
148 if (atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED)
151 atomic_set_mask(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED, &adapter->status);
153 zfcp_scsi_schedule_rports_block(adapter);
158 switch (link_down->error_code) {
159 case FSF_PSQ_LINK_NO_LIGHT:
160 dev_warn(&req->adapter->ccw_device->dev,
161 "There is no light signal from the local "
162 "fibre channel cable\n");
164 case FSF_PSQ_LINK_WRAP_PLUG:
165 dev_warn(&req->adapter->ccw_device->dev,
166 "There is a wrap plug instead of a fibre "
169 case FSF_PSQ_LINK_NO_FCP:
170 dev_warn(&req->adapter->ccw_device->dev,
171 "The adjacent fibre channel node does not "
174 case FSF_PSQ_LINK_FIRMWARE_UPDATE:
175 dev_warn(&req->adapter->ccw_device->dev,
176 "The FCP device is suspended because of a "
177 "firmware update\n");
179 case FSF_PSQ_LINK_INVALID_WWPN:
180 dev_warn(&req->adapter->ccw_device->dev,
181 "The FCP device detected a WWPN that is "
182 "duplicate or not valid\n");
184 case FSF_PSQ_LINK_NO_NPIV_SUPPORT:
185 dev_warn(&req->adapter->ccw_device->dev,
186 "The fibre channel fabric does not support NPIV\n");
188 case FSF_PSQ_LINK_NO_FCP_RESOURCES:
189 dev_warn(&req->adapter->ccw_device->dev,
190 "The FCP adapter cannot support more NPIV ports\n");
192 case FSF_PSQ_LINK_NO_FABRIC_RESOURCES:
193 dev_warn(&req->adapter->ccw_device->dev,
194 "The adjacent switch cannot support "
195 "more NPIV ports\n");
197 case FSF_PSQ_LINK_FABRIC_LOGIN_UNABLE:
198 dev_warn(&req->adapter->ccw_device->dev,
199 "The FCP adapter could not log in to the "
200 "fibre channel fabric\n");
202 case FSF_PSQ_LINK_WWPN_ASSIGNMENT_CORRUPTED:
203 dev_warn(&req->adapter->ccw_device->dev,
204 "The WWPN assignment file on the FCP adapter "
205 "has been damaged\n");
207 case FSF_PSQ_LINK_MODE_TABLE_CURRUPTED:
208 dev_warn(&req->adapter->ccw_device->dev,
209 "The mode table on the FCP adapter "
210 "has been damaged\n");
212 case FSF_PSQ_LINK_NO_WWPN_ASSIGNMENT:
213 dev_warn(&req->adapter->ccw_device->dev,
214 "All NPIV ports on the FCP adapter have "
218 dev_warn(&req->adapter->ccw_device->dev,
219 "The link between the FCP adapter and "
220 "the FC fabric is down\n");
223 zfcp_erp_adapter_failed(adapter, id, req);
226 static void zfcp_fsf_status_read_link_down(struct zfcp_fsf_req *req)
228 struct fsf_status_read_buffer *sr_buf = req->data;
229 struct fsf_link_down_info *ldi =
230 (struct fsf_link_down_info *) &sr_buf->payload;
232 switch (sr_buf->status_subtype) {
233 case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK:
234 zfcp_fsf_link_down_info_eval(req, "fssrld1", ldi);
236 case FSF_STATUS_READ_SUB_FDISC_FAILED:
237 zfcp_fsf_link_down_info_eval(req, "fssrld2", ldi);
239 case FSF_STATUS_READ_SUB_FIRMWARE_UPDATE:
240 zfcp_fsf_link_down_info_eval(req, "fssrld3", NULL);
244 static void zfcp_fsf_status_read_handler(struct zfcp_fsf_req *req)
246 struct zfcp_adapter *adapter = req->adapter;
247 struct fsf_status_read_buffer *sr_buf = req->data;
249 if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) {
250 zfcp_dbf_hba_fsf_unsol("dism", adapter->dbf, sr_buf);
251 mempool_free(sr_buf, adapter->pool.status_read_data);
252 zfcp_fsf_req_free(req);
256 zfcp_dbf_hba_fsf_unsol("read", adapter->dbf, sr_buf);
258 switch (sr_buf->status_type) {
259 case FSF_STATUS_READ_PORT_CLOSED:
260 zfcp_fsf_status_read_port_closed(req);
262 case FSF_STATUS_READ_INCOMING_ELS:
263 zfcp_fc_incoming_els(req);
265 case FSF_STATUS_READ_SENSE_DATA_AVAIL:
267 case FSF_STATUS_READ_BIT_ERROR_THRESHOLD:
268 dev_warn(&adapter->ccw_device->dev,
269 "The error threshold for checksum statistics "
270 "has been exceeded\n");
271 zfcp_dbf_hba_berr(adapter->dbf, req);
273 case FSF_STATUS_READ_LINK_DOWN:
274 zfcp_fsf_status_read_link_down(req);
276 case FSF_STATUS_READ_LINK_UP:
277 dev_info(&adapter->ccw_device->dev,
278 "The local link has been restored\n");
279 /* All ports should be marked as ready to run again */
280 zfcp_erp_modify_adapter_status(adapter, "fssrh_1", NULL,
281 ZFCP_STATUS_COMMON_RUNNING,
283 zfcp_erp_adapter_reopen(adapter,
284 ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED |
285 ZFCP_STATUS_COMMON_ERP_FAILED,
288 case FSF_STATUS_READ_NOTIFICATION_LOST:
289 if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_ACT_UPDATED)
290 zfcp_erp_adapter_access_changed(adapter, "fssrh_3",
292 if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_INCOMING_ELS)
293 queue_work(adapter->work_queue, &adapter->scan_work);
295 case FSF_STATUS_READ_CFDC_UPDATED:
296 zfcp_erp_adapter_access_changed(adapter, "fssrh_4", req);
298 case FSF_STATUS_READ_FEATURE_UPDATE_ALERT:
299 adapter->adapter_features = sr_buf->payload.word[0];
303 mempool_free(sr_buf, adapter->pool.status_read_data);
304 zfcp_fsf_req_free(req);
306 atomic_inc(&adapter->stat_miss);
307 queue_work(adapter->work_queue, &adapter->stat_work);
310 static void zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req *req)
312 switch (req->qtcb->header.fsf_status_qual.word[0]) {
313 case FSF_SQ_FCP_RSP_AVAILABLE:
314 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
315 case FSF_SQ_NO_RETRY_POSSIBLE:
316 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
318 case FSF_SQ_COMMAND_ABORTED:
320 case FSF_SQ_NO_RECOM:
321 dev_err(&req->adapter->ccw_device->dev,
322 "The FCP adapter reported a problem "
323 "that cannot be recovered\n");
324 zfcp_erp_adapter_shutdown(req->adapter, 0, "fsfsqe1", req);
327 /* all non-return stats set FSFREQ_ERROR*/
328 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
331 static void zfcp_fsf_fsfstatus_eval(struct zfcp_fsf_req *req)
333 if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR))
336 switch (req->qtcb->header.fsf_status) {
337 case FSF_UNKNOWN_COMMAND:
338 dev_err(&req->adapter->ccw_device->dev,
339 "The FCP adapter does not recognize the command 0x%x\n",
340 req->qtcb->header.fsf_command);
341 zfcp_erp_adapter_shutdown(req->adapter, 0, "fsfse_1", req);
342 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
344 case FSF_ADAPTER_STATUS_AVAILABLE:
345 zfcp_fsf_fsfstatus_qual_eval(req);
350 static void zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *req)
352 struct zfcp_adapter *adapter = req->adapter;
353 struct fsf_qtcb *qtcb = req->qtcb;
354 union fsf_prot_status_qual *psq = &qtcb->prefix.prot_status_qual;
356 zfcp_dbf_hba_fsf_response(req);
358 if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) {
359 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
363 switch (qtcb->prefix.prot_status) {
365 case FSF_PROT_FSF_STATUS_PRESENTED:
367 case FSF_PROT_QTCB_VERSION_ERROR:
368 dev_err(&adapter->ccw_device->dev,
369 "QTCB version 0x%x not supported by FCP adapter "
370 "(0x%x to 0x%x)\n", FSF_QTCB_CURRENT_VERSION,
371 psq->word[0], psq->word[1]);
372 zfcp_erp_adapter_shutdown(adapter, 0, "fspse_1", req);
374 case FSF_PROT_ERROR_STATE:
375 case FSF_PROT_SEQ_NUMB_ERROR:
376 zfcp_erp_adapter_reopen(adapter, 0, "fspse_2", req);
377 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
379 case FSF_PROT_UNSUPP_QTCB_TYPE:
380 dev_err(&adapter->ccw_device->dev,
381 "The QTCB type is not supported by the FCP adapter\n");
382 zfcp_erp_adapter_shutdown(adapter, 0, "fspse_3", req);
384 case FSF_PROT_HOST_CONNECTION_INITIALIZING:
385 atomic_set_mask(ZFCP_STATUS_ADAPTER_HOST_CON_INIT,
388 case FSF_PROT_DUPLICATE_REQUEST_ID:
389 dev_err(&adapter->ccw_device->dev,
390 "0x%Lx is an ambiguous request identifier\n",
391 (unsigned long long)qtcb->bottom.support.req_handle);
392 zfcp_erp_adapter_shutdown(adapter, 0, "fspse_4", req);
394 case FSF_PROT_LINK_DOWN:
395 zfcp_fsf_link_down_info_eval(req, "fspse_5",
396 &psq->link_down_info);
397 /* go through reopen to flush pending requests */
398 zfcp_erp_adapter_reopen(adapter, 0, "fspse_6", req);
400 case FSF_PROT_REEST_QUEUE:
401 /* All ports should be marked as ready to run again */
402 zfcp_erp_modify_adapter_status(adapter, "fspse_7", NULL,
403 ZFCP_STATUS_COMMON_RUNNING,
405 zfcp_erp_adapter_reopen(adapter,
406 ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED |
407 ZFCP_STATUS_COMMON_ERP_FAILED,
411 dev_err(&adapter->ccw_device->dev,
412 "0x%x is not a valid transfer protocol status\n",
413 qtcb->prefix.prot_status);
414 zfcp_erp_adapter_shutdown(adapter, 0, "fspse_9", req);
416 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
420 * zfcp_fsf_req_complete - process completion of a FSF request
421 * @fsf_req: The FSF request that has been completed.
423 * When a request has been completed either from the FCP adapter,
424 * or it has been dismissed due to a queue shutdown, this function
425 * is called to process the completion status and trigger further
426 * events related to the FSF request.
428 static void zfcp_fsf_req_complete(struct zfcp_fsf_req *req)
430 if (unlikely(req->fsf_command == FSF_QTCB_UNSOLICITED_STATUS)) {
431 zfcp_fsf_status_read_handler(req);
435 del_timer(&req->timer);
436 zfcp_fsf_protstatus_eval(req);
437 zfcp_fsf_fsfstatus_eval(req);
441 zfcp_erp_notify(req->erp_action, 0);
443 if (likely(req->status & ZFCP_STATUS_FSFREQ_CLEANUP))
444 zfcp_fsf_req_free(req);
446 complete(&req->completion);
450 * zfcp_fsf_req_dismiss_all - dismiss all fsf requests
451 * @adapter: pointer to struct zfcp_adapter
453 * Never ever call this without shutting down the adapter first.
454 * Otherwise the adapter would continue using and corrupting s390 storage.
455 * Included BUG_ON() call to ensure this is done.
456 * ERP is supposed to be the only user of this function.
458 void zfcp_fsf_req_dismiss_all(struct zfcp_adapter *adapter)
460 struct zfcp_fsf_req *req, *tmp;
461 LIST_HEAD(remove_queue);
463 BUG_ON(atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP);
464 zfcp_reqlist_move(adapter->req_list, &remove_queue);
466 list_for_each_entry_safe(req, tmp, &remove_queue, list) {
467 list_del(&req->list);
468 req->status |= ZFCP_STATUS_FSFREQ_DISMISSED;
469 zfcp_fsf_req_complete(req);
473 static int zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req *req)
475 struct fsf_qtcb_bottom_config *bottom = &req->qtcb->bottom.config;
476 struct zfcp_adapter *adapter = req->adapter;
477 struct Scsi_Host *shost = adapter->scsi_host;
478 struct fc_els_flogi *nsp, *plogi;
480 /* adjust pointers for missing command code */
481 nsp = (struct fc_els_flogi *) ((u8 *)&bottom->nport_serv_param
483 plogi = (struct fc_els_flogi *) ((u8 *)&bottom->plogi_payload
487 memcpy(req->data, bottom, sizeof(*bottom));
489 fc_host_port_name(shost) = nsp->fl_wwpn;
490 fc_host_node_name(shost) = nsp->fl_wwnn;
491 fc_host_port_id(shost) = ntoh24(bottom->s_id);
492 fc_host_speed(shost) = bottom->fc_link_speed;
493 fc_host_supported_classes(shost) = FC_COS_CLASS2 | FC_COS_CLASS3;
494 fc_host_supported_fc4s(shost)[2] = 1; /* FCP */
495 fc_host_active_fc4s(shost)[2] = 1; /* FCP */
497 adapter->hydra_version = bottom->adapter_type;
498 adapter->timer_ticks = bottom->timer_interval;
500 if (fc_host_permanent_port_name(shost) == -1)
501 fc_host_permanent_port_name(shost) = fc_host_port_name(shost);
503 switch (bottom->fc_topology) {
505 adapter->peer_d_id = ntoh24(bottom->peer_d_id);
506 adapter->peer_wwpn = plogi->fl_wwpn;
507 adapter->peer_wwnn = plogi->fl_wwnn;
508 fc_host_port_type(shost) = FC_PORTTYPE_PTP;
510 case FSF_TOPO_FABRIC:
511 fc_host_port_type(shost) = FC_PORTTYPE_NPORT;
514 fc_host_port_type(shost) = FC_PORTTYPE_NLPORT;
517 dev_err(&adapter->ccw_device->dev,
518 "Unknown or unsupported arbitrated loop "
519 "fibre channel topology detected\n");
520 zfcp_erp_adapter_shutdown(adapter, 0, "fsece_1", req);
527 static void zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *req)
529 struct zfcp_adapter *adapter = req->adapter;
530 struct fsf_qtcb *qtcb = req->qtcb;
531 struct fsf_qtcb_bottom_config *bottom = &qtcb->bottom.config;
532 struct Scsi_Host *shost = adapter->scsi_host;
534 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
537 adapter->fsf_lic_version = bottom->lic_version;
538 adapter->adapter_features = bottom->adapter_features;
539 adapter->connection_features = bottom->connection_features;
540 adapter->peer_wwpn = 0;
541 adapter->peer_wwnn = 0;
542 adapter->peer_d_id = 0;
544 switch (qtcb->header.fsf_status) {
546 if (zfcp_fsf_exchange_config_evaluate(req))
549 if (bottom->max_qtcb_size < sizeof(struct fsf_qtcb)) {
550 dev_err(&adapter->ccw_device->dev,
551 "FCP adapter maximum QTCB size (%d bytes) "
553 bottom->max_qtcb_size);
554 zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh1", req);
557 atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK,
560 case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE:
561 fc_host_node_name(shost) = 0;
562 fc_host_port_name(shost) = 0;
563 fc_host_port_id(shost) = 0;
564 fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN;
565 fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN;
566 adapter->hydra_version = 0;
568 atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK,
571 zfcp_fsf_link_down_info_eval(req, "fsecdh2",
572 &qtcb->header.fsf_status_qual.link_down_info);
575 zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh3", req);
579 if (adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT) {
580 adapter->hardware_version = bottom->hardware_version;
581 memcpy(fc_host_serial_number(shost), bottom->serial_number,
582 min(FC_SERIAL_NUMBER_SIZE, 17));
583 EBCASC(fc_host_serial_number(shost),
584 min(FC_SERIAL_NUMBER_SIZE, 17));
587 if (FSF_QTCB_CURRENT_VERSION < bottom->low_qtcb_version) {
588 dev_err(&adapter->ccw_device->dev,
589 "The FCP adapter only supports newer "
590 "control block versions\n");
591 zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh4", req);
594 if (FSF_QTCB_CURRENT_VERSION > bottom->high_qtcb_version) {
595 dev_err(&adapter->ccw_device->dev,
596 "The FCP adapter only supports older "
597 "control block versions\n");
598 zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh5", req);
602 static void zfcp_fsf_exchange_port_evaluate(struct zfcp_fsf_req *req)
604 struct zfcp_adapter *adapter = req->adapter;
605 struct fsf_qtcb_bottom_port *bottom = &req->qtcb->bottom.port;
606 struct Scsi_Host *shost = adapter->scsi_host;
609 memcpy(req->data, bottom, sizeof(*bottom));
611 if (adapter->connection_features & FSF_FEATURE_NPIV_MODE) {
612 fc_host_permanent_port_name(shost) = bottom->wwpn;
613 fc_host_port_type(shost) = FC_PORTTYPE_NPIV;
615 fc_host_permanent_port_name(shost) = fc_host_port_name(shost);
616 fc_host_maxframe_size(shost) = bottom->maximum_frame_size;
617 fc_host_supported_speeds(shost) = bottom->supported_speed;
620 static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *req)
622 struct fsf_qtcb *qtcb = req->qtcb;
624 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
627 switch (qtcb->header.fsf_status) {
629 zfcp_fsf_exchange_port_evaluate(req);
631 case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE:
632 zfcp_fsf_exchange_port_evaluate(req);
633 zfcp_fsf_link_down_info_eval(req, "fsepdh1",
634 &qtcb->header.fsf_status_qual.link_down_info);
639 static int zfcp_fsf_sbal_check(struct zfcp_qdio *qdio)
641 struct zfcp_qdio_queue *req_q = &qdio->req_q;
643 spin_lock_bh(&qdio->req_q_lock);
644 if (atomic_read(&req_q->count))
646 spin_unlock_bh(&qdio->req_q_lock);
650 static int zfcp_fsf_req_sbal_get(struct zfcp_qdio *qdio)
652 struct zfcp_adapter *adapter = qdio->adapter;
655 spin_unlock_bh(&qdio->req_q_lock);
656 ret = wait_event_interruptible_timeout(qdio->req_q_wq,
657 zfcp_fsf_sbal_check(qdio), 5 * HZ);
661 atomic_inc(&qdio->req_q_full);
662 /* assume hanging outbound queue, try queue recovery */
663 zfcp_erp_adapter_reopen(adapter, 0, "fsrsg_1", NULL);
666 spin_lock_bh(&qdio->req_q_lock);
670 static struct zfcp_fsf_req *zfcp_fsf_alloc(mempool_t *pool)
672 struct zfcp_fsf_req *req;
675 req = mempool_alloc(pool, GFP_ATOMIC);
677 req = kmalloc(sizeof(*req), GFP_ATOMIC);
682 memset(req, 0, sizeof(*req));
687 static struct fsf_qtcb *zfcp_qtcb_alloc(mempool_t *pool)
689 struct fsf_qtcb *qtcb;
692 qtcb = mempool_alloc(pool, GFP_ATOMIC);
694 qtcb = kmem_cache_alloc(zfcp_data.qtcb_cache, GFP_ATOMIC);
699 memset(qtcb, 0, sizeof(*qtcb));
703 static struct zfcp_fsf_req *zfcp_fsf_req_create(struct zfcp_qdio *qdio,
704 u32 fsf_cmd, mempool_t *pool)
706 struct qdio_buffer_element *sbale;
707 struct zfcp_qdio_queue *req_q = &qdio->req_q;
708 struct zfcp_adapter *adapter = qdio->adapter;
709 struct zfcp_fsf_req *req = zfcp_fsf_alloc(pool);
712 return ERR_PTR(-ENOMEM);
714 if (adapter->req_no == 0)
717 INIT_LIST_HEAD(&req->list);
718 init_timer(&req->timer);
719 init_completion(&req->completion);
721 req->adapter = adapter;
722 req->fsf_command = fsf_cmd;
723 req->req_id = adapter->req_no;
724 req->queue_req.sbal_number = 1;
725 req->queue_req.sbal_first = req_q->first;
726 req->queue_req.sbal_last = req_q->first;
727 req->queue_req.sbale_curr = 1;
729 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
730 sbale[0].addr = (void *) req->req_id;
731 sbale[0].flags |= SBAL_FLAGS0_COMMAND;
733 if (likely(fsf_cmd != FSF_QTCB_UNSOLICITED_STATUS)) {
735 req->qtcb = zfcp_qtcb_alloc(adapter->pool.qtcb_pool);
737 req->qtcb = zfcp_qtcb_alloc(NULL);
739 if (unlikely(!req->qtcb)) {
740 zfcp_fsf_req_free(req);
741 return ERR_PTR(-ENOMEM);
744 req->seq_no = adapter->fsf_req_seq_no;
745 req->qtcb->prefix.req_seq_no = adapter->fsf_req_seq_no;
746 req->qtcb->prefix.req_id = req->req_id;
747 req->qtcb->prefix.ulp_info = 26;
748 req->qtcb->prefix.qtcb_type = fsf_qtcb_type[req->fsf_command];
749 req->qtcb->prefix.qtcb_version = FSF_QTCB_CURRENT_VERSION;
750 req->qtcb->header.req_handle = req->req_id;
751 req->qtcb->header.fsf_command = req->fsf_command;
752 sbale[1].addr = (void *) req->qtcb;
753 sbale[1].length = sizeof(struct fsf_qtcb);
756 if (!(atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP)) {
757 zfcp_fsf_req_free(req);
758 return ERR_PTR(-EIO);
764 static int zfcp_fsf_req_send(struct zfcp_fsf_req *req)
766 struct zfcp_adapter *adapter = req->adapter;
767 struct zfcp_qdio *qdio = adapter->qdio;
768 int with_qtcb = (req->qtcb != NULL);
769 int req_id = req->req_id;
771 zfcp_reqlist_add(adapter->req_list, req);
773 req->queue_req.qdio_outb_usage = atomic_read(&qdio->req_q.count);
774 req->issued = get_clock();
775 if (zfcp_qdio_send(qdio, &req->queue_req)) {
776 del_timer(&req->timer);
777 /* lookup request again, list might have changed */
778 zfcp_reqlist_find_rm(adapter->req_list, req_id);
779 zfcp_erp_adapter_reopen(adapter, 0, "fsrs__1", req);
783 /* Don't increase for unsolicited status */
785 adapter->fsf_req_seq_no++;
792 * zfcp_fsf_status_read - send status read request
793 * @adapter: pointer to struct zfcp_adapter
794 * @req_flags: request flags
795 * Returns: 0 on success, ERROR otherwise
797 int zfcp_fsf_status_read(struct zfcp_qdio *qdio)
799 struct zfcp_adapter *adapter = qdio->adapter;
800 struct zfcp_fsf_req *req;
801 struct fsf_status_read_buffer *sr_buf;
802 struct qdio_buffer_element *sbale;
805 spin_lock_bh(&qdio->req_q_lock);
806 if (zfcp_fsf_req_sbal_get(qdio))
809 req = zfcp_fsf_req_create(qdio, FSF_QTCB_UNSOLICITED_STATUS,
810 adapter->pool.status_read_req);
812 retval = PTR_ERR(req);
816 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
817 sbale[2].flags |= SBAL_FLAGS_LAST_ENTRY;
818 req->queue_req.sbale_curr = 2;
820 sr_buf = mempool_alloc(adapter->pool.status_read_data, GFP_ATOMIC);
825 memset(sr_buf, 0, sizeof(*sr_buf));
827 sbale = zfcp_qdio_sbale_curr(qdio, &req->queue_req);
828 sbale->addr = (void *) sr_buf;
829 sbale->length = sizeof(*sr_buf);
831 retval = zfcp_fsf_req_send(req);
833 goto failed_req_send;
838 mempool_free(sr_buf, adapter->pool.status_read_data);
840 zfcp_fsf_req_free(req);
841 zfcp_dbf_hba_fsf_unsol("fail", adapter->dbf, NULL);
843 spin_unlock_bh(&qdio->req_q_lock);
847 static void zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req *req)
849 struct zfcp_unit *unit = req->data;
850 union fsf_status_qual *fsq = &req->qtcb->header.fsf_status_qual;
852 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
855 switch (req->qtcb->header.fsf_status) {
856 case FSF_PORT_HANDLE_NOT_VALID:
857 if (fsq->word[0] == fsq->word[1]) {
858 zfcp_erp_adapter_reopen(unit->port->adapter, 0,
860 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
863 case FSF_LUN_HANDLE_NOT_VALID:
864 if (fsq->word[0] == fsq->word[1]) {
865 zfcp_erp_port_reopen(unit->port, 0, "fsafch2", req);
866 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
869 case FSF_FCP_COMMAND_DOES_NOT_EXIST:
870 req->status |= ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED;
873 zfcp_erp_port_boxed(unit->port, "fsafch3", req);
874 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
877 zfcp_erp_unit_boxed(unit, "fsafch4", req);
878 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
880 case FSF_ADAPTER_STATUS_AVAILABLE:
881 switch (fsq->word[0]) {
882 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
883 zfcp_fc_test_link(unit->port);
885 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
886 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
891 req->status |= ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED;
897 * zfcp_fsf_abort_fcp_command - abort running SCSI command
898 * @old_req_id: unsigned long
899 * @unit: pointer to struct zfcp_unit
900 * Returns: pointer to struct zfcp_fsf_req
903 struct zfcp_fsf_req *zfcp_fsf_abort_fcp_command(unsigned long old_req_id,
904 struct zfcp_unit *unit)
906 struct qdio_buffer_element *sbale;
907 struct zfcp_fsf_req *req = NULL;
908 struct zfcp_qdio *qdio = unit->port->adapter->qdio;
910 spin_lock_bh(&qdio->req_q_lock);
911 if (zfcp_fsf_req_sbal_get(qdio))
913 req = zfcp_fsf_req_create(qdio, FSF_QTCB_ABORT_FCP_CMND,
914 qdio->adapter->pool.scsi_abort);
920 if (unlikely(!(atomic_read(&unit->status) &
921 ZFCP_STATUS_COMMON_UNBLOCKED)))
924 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
925 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
926 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
929 req->handler = zfcp_fsf_abort_fcp_command_handler;
930 req->qtcb->header.lun_handle = unit->handle;
931 req->qtcb->header.port_handle = unit->port->handle;
932 req->qtcb->bottom.support.req_handle = (u64) old_req_id;
934 zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT);
935 if (!zfcp_fsf_req_send(req))
939 zfcp_fsf_req_free(req);
942 spin_unlock_bh(&qdio->req_q_lock);
946 static void zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *req)
948 struct zfcp_adapter *adapter = req->adapter;
949 struct zfcp_fsf_ct_els *ct = req->data;
950 struct fsf_qtcb_header *header = &req->qtcb->header;
952 ct->status = -EINVAL;
954 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
957 switch (header->fsf_status) {
959 zfcp_dbf_san_ct_response(req);
962 case FSF_SERVICE_CLASS_NOT_SUPPORTED:
963 zfcp_fsf_class_not_supp(req);
965 case FSF_ADAPTER_STATUS_AVAILABLE:
966 switch (header->fsf_status_qual.word[0]){
967 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
968 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
969 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
973 case FSF_ACCESS_DENIED:
976 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
978 case FSF_PORT_HANDLE_NOT_VALID:
979 zfcp_erp_adapter_reopen(adapter, 0, "fsscth1", req);
981 case FSF_GENERIC_COMMAND_REJECTED:
982 case FSF_PAYLOAD_SIZE_MISMATCH:
983 case FSF_REQUEST_SIZE_TOO_LARGE:
984 case FSF_RESPONSE_SIZE_TOO_LARGE:
985 case FSF_SBAL_MISMATCH:
986 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
992 ct->handler(ct->handler_data);
995 static void zfcp_fsf_setup_ct_els_unchained(struct qdio_buffer_element *sbale,
996 struct scatterlist *sg_req,
997 struct scatterlist *sg_resp)
999 sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE_READ;
1000 sbale[2].addr = sg_virt(sg_req);
1001 sbale[2].length = sg_req->length;
1002 sbale[3].addr = sg_virt(sg_resp);
1003 sbale[3].length = sg_resp->length;
1004 sbale[3].flags |= SBAL_FLAGS_LAST_ENTRY;
1007 static int zfcp_fsf_one_sbal(struct scatterlist *sg)
1009 return sg_is_last(sg) && sg->length <= PAGE_SIZE;
1012 static int zfcp_fsf_setup_ct_els_sbals(struct zfcp_fsf_req *req,
1013 struct scatterlist *sg_req,
1014 struct scatterlist *sg_resp,
1017 struct zfcp_adapter *adapter = req->adapter;
1018 struct qdio_buffer_element *sbale = zfcp_qdio_sbale_req(adapter->qdio,
1020 u32 feat = adapter->adapter_features;
1023 if (!(feat & FSF_FEATURE_ELS_CT_CHAINED_SBALS)) {
1024 if (!zfcp_fsf_one_sbal(sg_req) || !zfcp_fsf_one_sbal(sg_resp))
1027 zfcp_fsf_setup_ct_els_unchained(sbale, sg_req, sg_resp);
1031 /* use single, unchained SBAL if it can hold the request */
1032 if (zfcp_fsf_one_sbal(sg_req) && zfcp_fsf_one_sbal(sg_resp)) {
1033 zfcp_fsf_setup_ct_els_unchained(sbale, sg_req, sg_resp);
1037 bytes = zfcp_qdio_sbals_from_sg(adapter->qdio, &req->queue_req,
1038 SBAL_FLAGS0_TYPE_WRITE_READ,
1042 req->qtcb->bottom.support.req_buf_length = bytes;
1043 req->queue_req.sbale_curr = ZFCP_LAST_SBALE_PER_SBAL;
1045 bytes = zfcp_qdio_sbals_from_sg(adapter->qdio, &req->queue_req,
1046 SBAL_FLAGS0_TYPE_WRITE_READ,
1047 sg_resp, max_sbals);
1048 req->qtcb->bottom.support.resp_buf_length = bytes;
1055 static int zfcp_fsf_setup_ct_els(struct zfcp_fsf_req *req,
1056 struct scatterlist *sg_req,
1057 struct scatterlist *sg_resp,
1058 int max_sbals, unsigned int timeout)
1062 ret = zfcp_fsf_setup_ct_els_sbals(req, sg_req, sg_resp, max_sbals);
1066 /* common settings for ct/gs and els requests */
1068 timeout = 255; /* max value accepted by hardware */
1069 req->qtcb->bottom.support.service_class = FSF_CLASS_3;
1070 req->qtcb->bottom.support.timeout = timeout;
1071 zfcp_fsf_start_timer(req, (timeout + 10) * HZ);
1077 * zfcp_fsf_send_ct - initiate a Generic Service request (FC-GS)
1078 * @ct: pointer to struct zfcp_send_ct with data for request
1079 * @pool: if non-null this mempool is used to allocate struct zfcp_fsf_req
1081 int zfcp_fsf_send_ct(struct zfcp_fc_wka_port *wka_port,
1082 struct zfcp_fsf_ct_els *ct, mempool_t *pool,
1083 unsigned int timeout)
1085 struct zfcp_qdio *qdio = wka_port->adapter->qdio;
1086 struct zfcp_fsf_req *req;
1089 spin_lock_bh(&qdio->req_q_lock);
1090 if (zfcp_fsf_req_sbal_get(qdio))
1093 req = zfcp_fsf_req_create(qdio, FSF_QTCB_SEND_GENERIC, pool);
1100 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1101 ret = zfcp_fsf_setup_ct_els(req, ct->req, ct->resp,
1102 FSF_MAX_SBALS_PER_REQ, timeout);
1106 req->handler = zfcp_fsf_send_ct_handler;
1107 req->qtcb->header.port_handle = wka_port->handle;
1110 zfcp_dbf_san_ct_request(req, wka_port->d_id);
1112 ret = zfcp_fsf_req_send(req);
1119 zfcp_fsf_req_free(req);
1121 spin_unlock_bh(&qdio->req_q_lock);
1125 static void zfcp_fsf_send_els_handler(struct zfcp_fsf_req *req)
1127 struct zfcp_fsf_ct_els *send_els = req->data;
1128 struct zfcp_port *port = send_els->port;
1129 struct fsf_qtcb_header *header = &req->qtcb->header;
1131 send_els->status = -EINVAL;
1133 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1134 goto skip_fsfstatus;
1136 switch (header->fsf_status) {
1138 zfcp_dbf_san_els_response(req);
1139 send_els->status = 0;
1141 case FSF_SERVICE_CLASS_NOT_SUPPORTED:
1142 zfcp_fsf_class_not_supp(req);
1144 case FSF_ADAPTER_STATUS_AVAILABLE:
1145 switch (header->fsf_status_qual.word[0]){
1146 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1147 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1148 case FSF_SQ_RETRY_IF_POSSIBLE:
1149 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1153 case FSF_ELS_COMMAND_REJECTED:
1154 case FSF_PAYLOAD_SIZE_MISMATCH:
1155 case FSF_REQUEST_SIZE_TOO_LARGE:
1156 case FSF_RESPONSE_SIZE_TOO_LARGE:
1158 case FSF_ACCESS_DENIED:
1160 zfcp_fsf_access_denied_port(req, port);
1162 case FSF_SBAL_MISMATCH:
1163 /* should never occure, avoided in zfcp_fsf_send_els */
1166 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1170 if (send_els->handler)
1171 send_els->handler(send_els->handler_data);
1175 * zfcp_fsf_send_els - initiate an ELS command (FC-FS)
1176 * @els: pointer to struct zfcp_send_els with data for the command
1178 int zfcp_fsf_send_els(struct zfcp_adapter *adapter, u32 d_id,
1179 struct zfcp_fsf_ct_els *els, unsigned int timeout)
1181 struct zfcp_fsf_req *req;
1182 struct zfcp_qdio *qdio = adapter->qdio;
1185 spin_lock_bh(&qdio->req_q_lock);
1186 if (zfcp_fsf_req_sbal_get(qdio))
1189 req = zfcp_fsf_req_create(qdio, FSF_QTCB_SEND_ELS, NULL);
1196 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1197 ret = zfcp_fsf_setup_ct_els(req, els->req, els->resp, 2, timeout);
1202 hton24(req->qtcb->bottom.support.d_id, d_id);
1203 req->handler = zfcp_fsf_send_els_handler;
1206 zfcp_dbf_san_els_request(req);
1208 ret = zfcp_fsf_req_send(req);
1215 zfcp_fsf_req_free(req);
1217 spin_unlock_bh(&qdio->req_q_lock);
1221 int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action)
1223 struct qdio_buffer_element *sbale;
1224 struct zfcp_fsf_req *req;
1225 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1228 spin_lock_bh(&qdio->req_q_lock);
1229 if (zfcp_fsf_req_sbal_get(qdio))
1232 req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_CONFIG_DATA,
1233 qdio->adapter->pool.erp_req);
1236 retval = PTR_ERR(req);
1240 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1241 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
1242 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
1243 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
1245 req->qtcb->bottom.config.feature_selection =
1247 FSF_FEATURE_LUN_SHARING |
1248 FSF_FEATURE_NOTIFICATION_LOST |
1249 FSF_FEATURE_UPDATE_ALERT;
1250 req->erp_action = erp_action;
1251 req->handler = zfcp_fsf_exchange_config_data_handler;
1252 erp_action->fsf_req_id = req->req_id;
1254 zfcp_fsf_start_erp_timer(req);
1255 retval = zfcp_fsf_req_send(req);
1257 zfcp_fsf_req_free(req);
1258 erp_action->fsf_req_id = 0;
1261 spin_unlock_bh(&qdio->req_q_lock);
1265 int zfcp_fsf_exchange_config_data_sync(struct zfcp_qdio *qdio,
1266 struct fsf_qtcb_bottom_config *data)
1268 struct qdio_buffer_element *sbale;
1269 struct zfcp_fsf_req *req = NULL;
1272 spin_lock_bh(&qdio->req_q_lock);
1273 if (zfcp_fsf_req_sbal_get(qdio))
1276 req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_CONFIG_DATA, NULL);
1279 retval = PTR_ERR(req);
1283 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
1284 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
1285 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
1286 req->handler = zfcp_fsf_exchange_config_data_handler;
1288 req->qtcb->bottom.config.feature_selection =
1290 FSF_FEATURE_LUN_SHARING |
1291 FSF_FEATURE_NOTIFICATION_LOST |
1292 FSF_FEATURE_UPDATE_ALERT;
1297 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1298 retval = zfcp_fsf_req_send(req);
1299 spin_unlock_bh(&qdio->req_q_lock);
1301 wait_for_completion(&req->completion);
1303 zfcp_fsf_req_free(req);
1307 spin_unlock_bh(&qdio->req_q_lock);
1312 * zfcp_fsf_exchange_port_data - request information about local port
1313 * @erp_action: ERP action for the adapter for which port data is requested
1314 * Returns: 0 on success, error otherwise
1316 int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action)
1318 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1319 struct qdio_buffer_element *sbale;
1320 struct zfcp_fsf_req *req;
1323 if (!(qdio->adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT))
1326 spin_lock_bh(&qdio->req_q_lock);
1327 if (zfcp_fsf_req_sbal_get(qdio))
1330 req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_PORT_DATA,
1331 qdio->adapter->pool.erp_req);
1334 retval = PTR_ERR(req);
1338 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1339 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
1340 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
1341 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
1343 req->handler = zfcp_fsf_exchange_port_data_handler;
1344 req->erp_action = erp_action;
1345 erp_action->fsf_req_id = req->req_id;
1347 zfcp_fsf_start_erp_timer(req);
1348 retval = zfcp_fsf_req_send(req);
1350 zfcp_fsf_req_free(req);
1351 erp_action->fsf_req_id = 0;
1354 spin_unlock_bh(&qdio->req_q_lock);
1359 * zfcp_fsf_exchange_port_data_sync - request information about local port
1360 * @qdio: pointer to struct zfcp_qdio
1361 * @data: pointer to struct fsf_qtcb_bottom_port
1362 * Returns: 0 on success, error otherwise
1364 int zfcp_fsf_exchange_port_data_sync(struct zfcp_qdio *qdio,
1365 struct fsf_qtcb_bottom_port *data)
1367 struct qdio_buffer_element *sbale;
1368 struct zfcp_fsf_req *req = NULL;
1371 if (!(qdio->adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT))
1374 spin_lock_bh(&qdio->req_q_lock);
1375 if (zfcp_fsf_req_sbal_get(qdio))
1378 req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_PORT_DATA, NULL);
1381 retval = PTR_ERR(req);
1388 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
1389 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
1390 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
1392 req->handler = zfcp_fsf_exchange_port_data_handler;
1393 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1394 retval = zfcp_fsf_req_send(req);
1395 spin_unlock_bh(&qdio->req_q_lock);
1398 wait_for_completion(&req->completion);
1400 zfcp_fsf_req_free(req);
1405 spin_unlock_bh(&qdio->req_q_lock);
1409 static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req *req)
1411 struct zfcp_port *port = req->data;
1412 struct fsf_qtcb_header *header = &req->qtcb->header;
1413 struct fc_els_flogi *plogi;
1415 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1418 switch (header->fsf_status) {
1419 case FSF_PORT_ALREADY_OPEN:
1421 case FSF_ACCESS_DENIED:
1422 zfcp_fsf_access_denied_port(req, port);
1424 case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED:
1425 dev_warn(&req->adapter->ccw_device->dev,
1426 "Not enough FCP adapter resources to open "
1427 "remote port 0x%016Lx\n",
1428 (unsigned long long)port->wwpn);
1429 zfcp_erp_port_failed(port, "fsoph_1", req);
1430 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1432 case FSF_ADAPTER_STATUS_AVAILABLE:
1433 switch (header->fsf_status_qual.word[0]) {
1434 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1435 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1436 case FSF_SQ_NO_RETRY_POSSIBLE:
1437 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1442 port->handle = header->port_handle;
1443 atomic_set_mask(ZFCP_STATUS_COMMON_OPEN |
1444 ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
1445 atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED |
1446 ZFCP_STATUS_COMMON_ACCESS_BOXED,
1448 /* check whether D_ID has changed during open */
1450 * FIXME: This check is not airtight, as the FCP channel does
1451 * not monitor closures of target port connections caused on
1452 * the remote side. Thus, they might miss out on invalidating
1453 * locally cached WWPNs (and other N_Port parameters) of gone
1454 * target ports. So, our heroic attempt to make things safe
1455 * could be undermined by 'open port' response data tagged with
1456 * obsolete WWPNs. Another reason to monitor potential
1457 * connection closures ourself at least (by interpreting
1458 * incoming ELS' and unsolicited status). It just crosses my
1459 * mind that one should be able to cross-check by means of
1460 * another GID_PN straight after a port has been opened.
1461 * Alternately, an ADISC/PDISC ELS should suffice, as well.
1463 plogi = (struct fc_els_flogi *) req->qtcb->bottom.support.els;
1464 if (req->qtcb->bottom.support.els1_length >=
1466 zfcp_fc_plogi_evaluate(port, plogi);
1468 case FSF_UNKNOWN_OP_SUBTYPE:
1469 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1474 put_device(&port->sysfs_device);
1478 * zfcp_fsf_open_port - create and send open port request
1479 * @erp_action: pointer to struct zfcp_erp_action
1480 * Returns: 0 on success, error otherwise
1482 int zfcp_fsf_open_port(struct zfcp_erp_action *erp_action)
1484 struct qdio_buffer_element *sbale;
1485 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1486 struct zfcp_port *port = erp_action->port;
1487 struct zfcp_fsf_req *req;
1490 spin_lock_bh(&qdio->req_q_lock);
1491 if (zfcp_fsf_req_sbal_get(qdio))
1494 req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_PORT_WITH_DID,
1495 qdio->adapter->pool.erp_req);
1498 retval = PTR_ERR(req);
1502 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1503 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
1504 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
1505 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
1507 req->handler = zfcp_fsf_open_port_handler;
1508 hton24(req->qtcb->bottom.support.d_id, port->d_id);
1510 req->erp_action = erp_action;
1511 erp_action->fsf_req_id = req->req_id;
1512 get_device(&port->sysfs_device);
1514 zfcp_fsf_start_erp_timer(req);
1515 retval = zfcp_fsf_req_send(req);
1517 zfcp_fsf_req_free(req);
1518 erp_action->fsf_req_id = 0;
1519 put_device(&port->sysfs_device);
1522 spin_unlock_bh(&qdio->req_q_lock);
1526 static void zfcp_fsf_close_port_handler(struct zfcp_fsf_req *req)
1528 struct zfcp_port *port = req->data;
1530 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1533 switch (req->qtcb->header.fsf_status) {
1534 case FSF_PORT_HANDLE_NOT_VALID:
1535 zfcp_erp_adapter_reopen(port->adapter, 0, "fscph_1", req);
1536 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1538 case FSF_ADAPTER_STATUS_AVAILABLE:
1541 zfcp_erp_modify_port_status(port, "fscph_2", req,
1542 ZFCP_STATUS_COMMON_OPEN,
1549 * zfcp_fsf_close_port - create and send close port request
1550 * @erp_action: pointer to struct zfcp_erp_action
1551 * Returns: 0 on success, error otherwise
1553 int zfcp_fsf_close_port(struct zfcp_erp_action *erp_action)
1555 struct qdio_buffer_element *sbale;
1556 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1557 struct zfcp_fsf_req *req;
1560 spin_lock_bh(&qdio->req_q_lock);
1561 if (zfcp_fsf_req_sbal_get(qdio))
1564 req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PORT,
1565 qdio->adapter->pool.erp_req);
1568 retval = PTR_ERR(req);
1572 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1573 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
1574 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
1575 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
1577 req->handler = zfcp_fsf_close_port_handler;
1578 req->data = erp_action->port;
1579 req->erp_action = erp_action;
1580 req->qtcb->header.port_handle = erp_action->port->handle;
1581 erp_action->fsf_req_id = req->req_id;
1583 zfcp_fsf_start_erp_timer(req);
1584 retval = zfcp_fsf_req_send(req);
1586 zfcp_fsf_req_free(req);
1587 erp_action->fsf_req_id = 0;
1590 spin_unlock_bh(&qdio->req_q_lock);
1594 static void zfcp_fsf_open_wka_port_handler(struct zfcp_fsf_req *req)
1596 struct zfcp_fc_wka_port *wka_port = req->data;
1597 struct fsf_qtcb_header *header = &req->qtcb->header;
1599 if (req->status & ZFCP_STATUS_FSFREQ_ERROR) {
1600 wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE;
1604 switch (header->fsf_status) {
1605 case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED:
1606 dev_warn(&req->adapter->ccw_device->dev,
1607 "Opening WKA port 0x%x failed\n", wka_port->d_id);
1609 case FSF_ADAPTER_STATUS_AVAILABLE:
1610 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1612 case FSF_ACCESS_DENIED:
1613 wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE;
1616 wka_port->handle = header->port_handle;
1618 case FSF_PORT_ALREADY_OPEN:
1619 wka_port->status = ZFCP_FC_WKA_PORT_ONLINE;
1622 wake_up(&wka_port->completion_wq);
1626 * zfcp_fsf_open_wka_port - create and send open wka-port request
1627 * @wka_port: pointer to struct zfcp_fc_wka_port
1628 * Returns: 0 on success, error otherwise
1630 int zfcp_fsf_open_wka_port(struct zfcp_fc_wka_port *wka_port)
1632 struct qdio_buffer_element *sbale;
1633 struct zfcp_qdio *qdio = wka_port->adapter->qdio;
1634 struct zfcp_fsf_req *req;
1637 spin_lock_bh(&qdio->req_q_lock);
1638 if (zfcp_fsf_req_sbal_get(qdio))
1641 req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_PORT_WITH_DID,
1642 qdio->adapter->pool.erp_req);
1644 if (unlikely(IS_ERR(req))) {
1645 retval = PTR_ERR(req);
1649 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1650 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
1651 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
1652 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
1654 req->handler = zfcp_fsf_open_wka_port_handler;
1655 hton24(req->qtcb->bottom.support.d_id, wka_port->d_id);
1656 req->data = wka_port;
1658 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1659 retval = zfcp_fsf_req_send(req);
1661 zfcp_fsf_req_free(req);
1663 spin_unlock_bh(&qdio->req_q_lock);
1667 static void zfcp_fsf_close_wka_port_handler(struct zfcp_fsf_req *req)
1669 struct zfcp_fc_wka_port *wka_port = req->data;
1671 if (req->qtcb->header.fsf_status == FSF_PORT_HANDLE_NOT_VALID) {
1672 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1673 zfcp_erp_adapter_reopen(wka_port->adapter, 0, "fscwph1", req);
1676 wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE;
1677 wake_up(&wka_port->completion_wq);
1681 * zfcp_fsf_close_wka_port - create and send close wka port request
1682 * @wka_port: WKA port to open
1683 * Returns: 0 on success, error otherwise
1685 int zfcp_fsf_close_wka_port(struct zfcp_fc_wka_port *wka_port)
1687 struct qdio_buffer_element *sbale;
1688 struct zfcp_qdio *qdio = wka_port->adapter->qdio;
1689 struct zfcp_fsf_req *req;
1692 spin_lock_bh(&qdio->req_q_lock);
1693 if (zfcp_fsf_req_sbal_get(qdio))
1696 req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PORT,
1697 qdio->adapter->pool.erp_req);
1699 if (unlikely(IS_ERR(req))) {
1700 retval = PTR_ERR(req);
1704 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1705 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
1706 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
1707 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
1709 req->handler = zfcp_fsf_close_wka_port_handler;
1710 req->data = wka_port;
1711 req->qtcb->header.port_handle = wka_port->handle;
1713 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1714 retval = zfcp_fsf_req_send(req);
1716 zfcp_fsf_req_free(req);
1718 spin_unlock_bh(&qdio->req_q_lock);
1722 static void zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *req)
1724 struct zfcp_port *port = req->data;
1725 struct fsf_qtcb_header *header = &req->qtcb->header;
1726 struct zfcp_unit *unit;
1728 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1731 switch (header->fsf_status) {
1732 case FSF_PORT_HANDLE_NOT_VALID:
1733 zfcp_erp_adapter_reopen(port->adapter, 0, "fscpph1", req);
1734 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1736 case FSF_ACCESS_DENIED:
1737 zfcp_fsf_access_denied_port(req, port);
1739 case FSF_PORT_BOXED:
1740 /* can't use generic zfcp_erp_modify_port_status because
1741 * ZFCP_STATUS_COMMON_OPEN must not be reset for the port */
1742 atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
1743 read_lock(&port->unit_list_lock);
1744 list_for_each_entry(unit, &port->unit_list, list)
1745 atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN,
1747 read_unlock(&port->unit_list_lock);
1748 zfcp_erp_port_boxed(port, "fscpph2", req);
1749 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1751 case FSF_ADAPTER_STATUS_AVAILABLE:
1752 switch (header->fsf_status_qual.word[0]) {
1753 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1755 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1756 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1761 /* can't use generic zfcp_erp_modify_port_status because
1762 * ZFCP_STATUS_COMMON_OPEN must not be reset for the port
1764 atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
1765 read_lock(&port->unit_list_lock);
1766 list_for_each_entry(unit, &port->unit_list, list)
1767 atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN,
1769 read_unlock(&port->unit_list_lock);
1775 * zfcp_fsf_close_physical_port - close physical port
1776 * @erp_action: pointer to struct zfcp_erp_action
1777 * Returns: 0 on success
1779 int zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action)
1781 struct qdio_buffer_element *sbale;
1782 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1783 struct zfcp_fsf_req *req;
1786 spin_lock_bh(&qdio->req_q_lock);
1787 if (zfcp_fsf_req_sbal_get(qdio))
1790 req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PHYSICAL_PORT,
1791 qdio->adapter->pool.erp_req);
1794 retval = PTR_ERR(req);
1798 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1799 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
1800 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
1801 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
1803 req->data = erp_action->port;
1804 req->qtcb->header.port_handle = erp_action->port->handle;
1805 req->erp_action = erp_action;
1806 req->handler = zfcp_fsf_close_physical_port_handler;
1807 erp_action->fsf_req_id = req->req_id;
1809 zfcp_fsf_start_erp_timer(req);
1810 retval = zfcp_fsf_req_send(req);
1812 zfcp_fsf_req_free(req);
1813 erp_action->fsf_req_id = 0;
1816 spin_unlock_bh(&qdio->req_q_lock);
1820 static void zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *req)
1822 struct zfcp_adapter *adapter = req->adapter;
1823 struct zfcp_unit *unit = req->data;
1824 struct fsf_qtcb_header *header = &req->qtcb->header;
1825 struct fsf_qtcb_bottom_support *bottom = &req->qtcb->bottom.support;
1826 struct fsf_queue_designator *queue_designator =
1827 &header->fsf_status_qual.fsf_queue_designator;
1828 int exclusive, readwrite;
1830 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1833 atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED |
1834 ZFCP_STATUS_COMMON_ACCESS_BOXED |
1835 ZFCP_STATUS_UNIT_SHARED |
1836 ZFCP_STATUS_UNIT_READONLY,
1839 switch (header->fsf_status) {
1841 case FSF_PORT_HANDLE_NOT_VALID:
1842 zfcp_erp_adapter_reopen(unit->port->adapter, 0, "fsouh_1", req);
1844 case FSF_LUN_ALREADY_OPEN:
1846 case FSF_ACCESS_DENIED:
1847 zfcp_fsf_access_denied_unit(req, unit);
1848 atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED, &unit->status);
1849 atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status);
1851 case FSF_PORT_BOXED:
1852 zfcp_erp_port_boxed(unit->port, "fsouh_2", req);
1853 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1855 case FSF_LUN_SHARING_VIOLATION:
1856 if (header->fsf_status_qual.word[0])
1857 dev_warn(&adapter->ccw_device->dev,
1858 "LUN 0x%Lx on port 0x%Lx is already in "
1859 "use by CSS%d, MIF Image ID %x\n",
1860 (unsigned long long)unit->fcp_lun,
1861 (unsigned long long)unit->port->wwpn,
1862 queue_designator->cssid,
1863 queue_designator->hla);
1865 zfcp_act_eval_err(adapter,
1866 header->fsf_status_qual.word[2]);
1867 zfcp_erp_unit_access_denied(unit, "fsouh_3", req);
1868 atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED, &unit->status);
1869 atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status);
1870 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1872 case FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED:
1873 dev_warn(&adapter->ccw_device->dev,
1874 "No handle is available for LUN "
1875 "0x%016Lx on port 0x%016Lx\n",
1876 (unsigned long long)unit->fcp_lun,
1877 (unsigned long long)unit->port->wwpn);
1878 zfcp_erp_unit_failed(unit, "fsouh_4", req);
1880 case FSF_INVALID_COMMAND_OPTION:
1881 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1883 case FSF_ADAPTER_STATUS_AVAILABLE:
1884 switch (header->fsf_status_qual.word[0]) {
1885 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1886 zfcp_fc_test_link(unit->port);
1888 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1889 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1895 unit->handle = header->lun_handle;
1896 atomic_set_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status);
1898 if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE) &&
1899 (adapter->adapter_features & FSF_FEATURE_LUN_SHARING) &&
1900 !zfcp_ccw_priv_sch(adapter)) {
1901 exclusive = (bottom->lun_access_info &
1902 FSF_UNIT_ACCESS_EXCLUSIVE);
1903 readwrite = (bottom->lun_access_info &
1904 FSF_UNIT_ACCESS_OUTBOUND_TRANSFER);
1907 atomic_set_mask(ZFCP_STATUS_UNIT_SHARED,
1911 atomic_set_mask(ZFCP_STATUS_UNIT_READONLY,
1913 dev_info(&adapter->ccw_device->dev,
1914 "SCSI device at LUN 0x%016Lx on port "
1915 "0x%016Lx opened read-only\n",
1916 (unsigned long long)unit->fcp_lun,
1917 (unsigned long long)unit->port->wwpn);
1920 if (exclusive && !readwrite) {
1921 dev_err(&adapter->ccw_device->dev,
1922 "Exclusive read-only access not "
1923 "supported (unit 0x%016Lx, "
1925 (unsigned long long)unit->fcp_lun,
1926 (unsigned long long)unit->port->wwpn);
1927 zfcp_erp_unit_failed(unit, "fsouh_5", req);
1928 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1929 zfcp_erp_unit_shutdown(unit, 0, "fsouh_6", req);
1930 } else if (!exclusive && readwrite) {
1931 dev_err(&adapter->ccw_device->dev,
1932 "Shared read-write access not "
1933 "supported (unit 0x%016Lx, port "
1935 (unsigned long long)unit->fcp_lun,
1936 (unsigned long long)unit->port->wwpn);
1937 zfcp_erp_unit_failed(unit, "fsouh_7", req);
1938 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1939 zfcp_erp_unit_shutdown(unit, 0, "fsouh_8", req);
1947 * zfcp_fsf_open_unit - open unit
1948 * @erp_action: pointer to struct zfcp_erp_action
1949 * Returns: 0 on success, error otherwise
1951 int zfcp_fsf_open_unit(struct zfcp_erp_action *erp_action)
1953 struct qdio_buffer_element *sbale;
1954 struct zfcp_adapter *adapter = erp_action->adapter;
1955 struct zfcp_qdio *qdio = adapter->qdio;
1956 struct zfcp_fsf_req *req;
1959 spin_lock_bh(&qdio->req_q_lock);
1960 if (zfcp_fsf_req_sbal_get(qdio))
1963 req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_LUN,
1964 adapter->pool.erp_req);
1967 retval = PTR_ERR(req);
1971 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1972 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
1973 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
1974 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
1976 req->qtcb->header.port_handle = erp_action->port->handle;
1977 req->qtcb->bottom.support.fcp_lun = erp_action->unit->fcp_lun;
1978 req->handler = zfcp_fsf_open_unit_handler;
1979 req->data = erp_action->unit;
1980 req->erp_action = erp_action;
1981 erp_action->fsf_req_id = req->req_id;
1983 if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE))
1984 req->qtcb->bottom.support.option = FSF_OPEN_LUN_SUPPRESS_BOXING;
1986 zfcp_fsf_start_erp_timer(req);
1987 retval = zfcp_fsf_req_send(req);
1989 zfcp_fsf_req_free(req);
1990 erp_action->fsf_req_id = 0;
1993 spin_unlock_bh(&qdio->req_q_lock);
1997 static void zfcp_fsf_close_unit_handler(struct zfcp_fsf_req *req)
1999 struct zfcp_unit *unit = req->data;
2001 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
2004 switch (req->qtcb->header.fsf_status) {
2005 case FSF_PORT_HANDLE_NOT_VALID:
2006 zfcp_erp_adapter_reopen(unit->port->adapter, 0, "fscuh_1", req);
2007 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2009 case FSF_LUN_HANDLE_NOT_VALID:
2010 zfcp_erp_port_reopen(unit->port, 0, "fscuh_2", req);
2011 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2013 case FSF_PORT_BOXED:
2014 zfcp_erp_port_boxed(unit->port, "fscuh_3", req);
2015 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2017 case FSF_ADAPTER_STATUS_AVAILABLE:
2018 switch (req->qtcb->header.fsf_status_qual.word[0]) {
2019 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
2020 zfcp_fc_test_link(unit->port);
2022 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
2023 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2028 atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status);
2034 * zfcp_fsf_close_unit - close zfcp unit
2035 * @erp_action: pointer to struct zfcp_unit
2036 * Returns: 0 on success, error otherwise
2038 int zfcp_fsf_close_unit(struct zfcp_erp_action *erp_action)
2040 struct qdio_buffer_element *sbale;
2041 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
2042 struct zfcp_fsf_req *req;
2045 spin_lock_bh(&qdio->req_q_lock);
2046 if (zfcp_fsf_req_sbal_get(qdio))
2049 req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_LUN,
2050 qdio->adapter->pool.erp_req);
2053 retval = PTR_ERR(req);
2057 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
2058 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
2059 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
2060 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
2062 req->qtcb->header.port_handle = erp_action->port->handle;
2063 req->qtcb->header.lun_handle = erp_action->unit->handle;
2064 req->handler = zfcp_fsf_close_unit_handler;
2065 req->data = erp_action->unit;
2066 req->erp_action = erp_action;
2067 erp_action->fsf_req_id = req->req_id;
2069 zfcp_fsf_start_erp_timer(req);
2070 retval = zfcp_fsf_req_send(req);
2072 zfcp_fsf_req_free(req);
2073 erp_action->fsf_req_id = 0;
2076 spin_unlock_bh(&qdio->req_q_lock);
2080 static void zfcp_fsf_update_lat(struct fsf_latency_record *lat_rec, u32 lat)
2082 lat_rec->sum += lat;
2083 lat_rec->min = min(lat_rec->min, lat);
2084 lat_rec->max = max(lat_rec->max, lat);
2087 static void zfcp_fsf_req_trace(struct zfcp_fsf_req *req, struct scsi_cmnd *scsi)
2089 struct fsf_qual_latency_info *lat_in;
2090 struct latency_cont *lat = NULL;
2091 struct zfcp_unit *unit = req->unit;
2092 struct zfcp_blk_drv_data blktrc;
2093 int ticks = req->adapter->timer_ticks;
2095 lat_in = &req->qtcb->prefix.prot_status_qual.latency_info;
2098 blktrc.magic = ZFCP_BLK_DRV_DATA_MAGIC;
2099 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
2100 blktrc.flags |= ZFCP_BLK_REQ_ERROR;
2101 blktrc.inb_usage = req->queue_req.qdio_inb_usage;
2102 blktrc.outb_usage = req->queue_req.qdio_outb_usage;
2104 if (req->adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA) {
2105 blktrc.flags |= ZFCP_BLK_LAT_VALID;
2106 blktrc.channel_lat = lat_in->channel_lat * ticks;
2107 blktrc.fabric_lat = lat_in->fabric_lat * ticks;
2109 switch (req->qtcb->bottom.io.data_direction) {
2110 case FSF_DATADIR_READ:
2111 lat = &unit->latencies.read;
2113 case FSF_DATADIR_WRITE:
2114 lat = &unit->latencies.write;
2116 case FSF_DATADIR_CMND:
2117 lat = &unit->latencies.cmd;
2122 spin_lock(&unit->latencies.lock);
2123 zfcp_fsf_update_lat(&lat->channel, lat_in->channel_lat);
2124 zfcp_fsf_update_lat(&lat->fabric, lat_in->fabric_lat);
2126 spin_unlock(&unit->latencies.lock);
2130 blk_add_driver_data(scsi->request->q, scsi->request, &blktrc,
2134 static void zfcp_fsf_send_fcp_command_task_handler(struct zfcp_fsf_req *req)
2136 struct scsi_cmnd *scpnt;
2137 struct fcp_resp_with_ext *fcp_rsp;
2138 unsigned long flags;
2140 read_lock_irqsave(&req->adapter->abort_lock, flags);
2143 if (unlikely(!scpnt)) {
2144 read_unlock_irqrestore(&req->adapter->abort_lock, flags);
2148 if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) {
2149 set_host_byte(scpnt, DID_TRANSPORT_DISRUPTED);
2150 goto skip_fsfstatus;
2153 fcp_rsp = (struct fcp_resp_with_ext *) &req->qtcb->bottom.io.fcp_rsp;
2154 zfcp_fc_eval_fcp_rsp(fcp_rsp, scpnt);
2156 zfcp_fsf_req_trace(req, scpnt);
2159 if (scpnt->result != 0)
2160 zfcp_dbf_scsi_result("erro", 3, req->adapter->dbf, scpnt, req);
2161 else if (scpnt->retries > 0)
2162 zfcp_dbf_scsi_result("retr", 4, req->adapter->dbf, scpnt, req);
2164 zfcp_dbf_scsi_result("norm", 6, req->adapter->dbf, scpnt, req);
2166 scpnt->host_scribble = NULL;
2167 (scpnt->scsi_done) (scpnt);
2169 * We must hold this lock until scsi_done has been called.
2170 * Otherwise we may call scsi_done after abort regarding this
2171 * command has completed.
2172 * Note: scsi_done must not block!
2174 read_unlock_irqrestore(&req->adapter->abort_lock, flags);
2177 static void zfcp_fsf_send_fcp_ctm_handler(struct zfcp_fsf_req *req)
2179 struct fcp_resp_with_ext *fcp_rsp;
2180 struct fcp_resp_rsp_info *rsp_info;
2182 fcp_rsp = (struct fcp_resp_with_ext *) &req->qtcb->bottom.io.fcp_rsp;
2183 rsp_info = (struct fcp_resp_rsp_info *) &fcp_rsp[1];
2185 if ((rsp_info->rsp_code != FCP_TMF_CMPL) ||
2186 (req->status & ZFCP_STATUS_FSFREQ_ERROR))
2187 req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED;
2191 static void zfcp_fsf_send_fcp_command_handler(struct zfcp_fsf_req *req)
2193 struct zfcp_unit *unit;
2194 struct fsf_qtcb_header *header = &req->qtcb->header;
2196 if (unlikely(req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT))
2201 if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR))
2202 goto skip_fsfstatus;
2204 switch (header->fsf_status) {
2205 case FSF_HANDLE_MISMATCH:
2206 case FSF_PORT_HANDLE_NOT_VALID:
2207 zfcp_erp_adapter_reopen(unit->port->adapter, 0, "fssfch1", req);
2208 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2210 case FSF_FCPLUN_NOT_VALID:
2211 case FSF_LUN_HANDLE_NOT_VALID:
2212 zfcp_erp_port_reopen(unit->port, 0, "fssfch2", req);
2213 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2215 case FSF_SERVICE_CLASS_NOT_SUPPORTED:
2216 zfcp_fsf_class_not_supp(req);
2218 case FSF_ACCESS_DENIED:
2219 zfcp_fsf_access_denied_unit(req, unit);
2221 case FSF_DIRECTION_INDICATOR_NOT_VALID:
2222 dev_err(&req->adapter->ccw_device->dev,
2223 "Incorrect direction %d, unit 0x%016Lx on port "
2224 "0x%016Lx closed\n",
2225 req->qtcb->bottom.io.data_direction,
2226 (unsigned long long)unit->fcp_lun,
2227 (unsigned long long)unit->port->wwpn);
2228 zfcp_erp_adapter_shutdown(unit->port->adapter, 0, "fssfch3",
2230 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2232 case FSF_CMND_LENGTH_NOT_VALID:
2233 dev_err(&req->adapter->ccw_device->dev,
2234 "Incorrect CDB length %d, unit 0x%016Lx on "
2235 "port 0x%016Lx closed\n",
2236 req->qtcb->bottom.io.fcp_cmnd_length,
2237 (unsigned long long)unit->fcp_lun,
2238 (unsigned long long)unit->port->wwpn);
2239 zfcp_erp_adapter_shutdown(unit->port->adapter, 0, "fssfch4",
2241 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2243 case FSF_PORT_BOXED:
2244 zfcp_erp_port_boxed(unit->port, "fssfch5", req);
2245 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2248 zfcp_erp_unit_boxed(unit, "fssfch6", req);
2249 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2251 case FSF_ADAPTER_STATUS_AVAILABLE:
2252 if (header->fsf_status_qual.word[0] ==
2253 FSF_SQ_INVOKE_LINK_TEST_PROCEDURE)
2254 zfcp_fc_test_link(unit->port);
2255 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2259 if (req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT)
2260 zfcp_fsf_send_fcp_ctm_handler(req);
2262 zfcp_fsf_send_fcp_command_task_handler(req);
2264 put_device(&unit->sysfs_device);
2269 * zfcp_fsf_send_fcp_command_task - initiate an FCP command (for a SCSI command)
2270 * @unit: unit where command is sent to
2271 * @scsi_cmnd: scsi command to be sent
2273 int zfcp_fsf_send_fcp_command_task(struct zfcp_unit *unit,
2274 struct scsi_cmnd *scsi_cmnd)
2276 struct zfcp_fsf_req *req;
2277 struct fcp_cmnd *fcp_cmnd;
2278 unsigned int sbtype = SBAL_FLAGS0_TYPE_READ;
2279 int real_bytes, retval = -EIO;
2280 struct zfcp_adapter *adapter = unit->port->adapter;
2281 struct zfcp_qdio *qdio = adapter->qdio;
2283 if (unlikely(!(atomic_read(&unit->status) &
2284 ZFCP_STATUS_COMMON_UNBLOCKED)))
2287 spin_lock(&qdio->req_q_lock);
2288 if (atomic_read(&qdio->req_q.count) <= 0) {
2289 atomic_inc(&qdio->req_q_full);
2293 req = zfcp_fsf_req_create(qdio, FSF_QTCB_FCP_CMND,
2294 adapter->pool.scsi_req);
2297 retval = PTR_ERR(req);
2301 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
2302 get_device(&unit->sysfs_device);
2304 req->data = scsi_cmnd;
2305 req->handler = zfcp_fsf_send_fcp_command_handler;
2306 req->qtcb->header.lun_handle = unit->handle;
2307 req->qtcb->header.port_handle = unit->port->handle;
2308 req->qtcb->bottom.io.service_class = FSF_CLASS_3;
2309 req->qtcb->bottom.io.fcp_cmnd_length = FCP_CMND_LEN;
2311 scsi_cmnd->host_scribble = (unsigned char *) req->req_id;
2314 * set depending on data direction:
2315 * data direction bits in SBALE (SB Type)
2316 * data direction bits in QTCB
2318 switch (scsi_cmnd->sc_data_direction) {
2320 req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND;
2322 case DMA_FROM_DEVICE:
2323 req->qtcb->bottom.io.data_direction = FSF_DATADIR_READ;
2326 req->qtcb->bottom.io.data_direction = FSF_DATADIR_WRITE;
2327 sbtype = SBAL_FLAGS0_TYPE_WRITE;
2329 case DMA_BIDIRECTIONAL:
2330 goto failed_scsi_cmnd;
2333 fcp_cmnd = (struct fcp_cmnd *) &req->qtcb->bottom.io.fcp_cmnd;
2334 zfcp_fc_scsi_to_fcp(fcp_cmnd, scsi_cmnd);
2336 real_bytes = zfcp_qdio_sbals_from_sg(qdio, &req->queue_req, sbtype,
2337 scsi_sglist(scsi_cmnd),
2338 FSF_MAX_SBALS_PER_REQ);
2339 if (unlikely(real_bytes < 0)) {
2340 if (req->queue_req.sbal_number >= FSF_MAX_SBALS_PER_REQ) {
2341 dev_err(&adapter->ccw_device->dev,
2342 "Oversize data package, unit 0x%016Lx "
2343 "on port 0x%016Lx closed\n",
2344 (unsigned long long)unit->fcp_lun,
2345 (unsigned long long)unit->port->wwpn);
2346 zfcp_erp_unit_shutdown(unit, 0, "fssfct1", req);
2349 goto failed_scsi_cmnd;
2352 retval = zfcp_fsf_req_send(req);
2353 if (unlikely(retval))
2354 goto failed_scsi_cmnd;
2359 put_device(&unit->sysfs_device);
2360 zfcp_fsf_req_free(req);
2361 scsi_cmnd->host_scribble = NULL;
2363 spin_unlock(&qdio->req_q_lock);
2368 * zfcp_fsf_send_fcp_ctm - send SCSI task management command
2369 * @unit: pointer to struct zfcp_unit
2370 * @tm_flags: unsigned byte for task management flags
2371 * Returns: on success pointer to struct fsf_req, NULL otherwise
2373 struct zfcp_fsf_req *zfcp_fsf_send_fcp_ctm(struct zfcp_unit *unit, u8 tm_flags)
2375 struct qdio_buffer_element *sbale;
2376 struct zfcp_fsf_req *req = NULL;
2377 struct fcp_cmnd *fcp_cmnd;
2378 struct zfcp_qdio *qdio = unit->port->adapter->qdio;
2380 if (unlikely(!(atomic_read(&unit->status) &
2381 ZFCP_STATUS_COMMON_UNBLOCKED)))
2384 spin_lock_bh(&qdio->req_q_lock);
2385 if (zfcp_fsf_req_sbal_get(qdio))
2388 req = zfcp_fsf_req_create(qdio, FSF_QTCB_FCP_CMND,
2389 qdio->adapter->pool.scsi_req);
2396 req->status |= ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT;
2398 req->handler = zfcp_fsf_send_fcp_command_handler;
2399 req->qtcb->header.lun_handle = unit->handle;
2400 req->qtcb->header.port_handle = unit->port->handle;
2401 req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND;
2402 req->qtcb->bottom.io.service_class = FSF_CLASS_3;
2403 req->qtcb->bottom.io.fcp_cmnd_length = FCP_CMND_LEN;
2405 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
2406 sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE;
2407 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
2409 fcp_cmnd = (struct fcp_cmnd *) &req->qtcb->bottom.io.fcp_cmnd;
2410 zfcp_fc_fcp_tm(fcp_cmnd, unit->device, tm_flags);
2412 zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT);
2413 if (!zfcp_fsf_req_send(req))
2416 zfcp_fsf_req_free(req);
2419 spin_unlock_bh(&qdio->req_q_lock);
2423 static void zfcp_fsf_control_file_handler(struct zfcp_fsf_req *req)
2428 * zfcp_fsf_control_file - control file upload/download
2429 * @adapter: pointer to struct zfcp_adapter
2430 * @fsf_cfdc: pointer to struct zfcp_fsf_cfdc
2431 * Returns: on success pointer to struct zfcp_fsf_req, NULL otherwise
2433 struct zfcp_fsf_req *zfcp_fsf_control_file(struct zfcp_adapter *adapter,
2434 struct zfcp_fsf_cfdc *fsf_cfdc)
2436 struct qdio_buffer_element *sbale;
2437 struct zfcp_qdio *qdio = adapter->qdio;
2438 struct zfcp_fsf_req *req = NULL;
2439 struct fsf_qtcb_bottom_support *bottom;
2440 int direction, retval = -EIO, bytes;
2442 if (!(adapter->adapter_features & FSF_FEATURE_CFDC))
2443 return ERR_PTR(-EOPNOTSUPP);
2445 switch (fsf_cfdc->command) {
2446 case FSF_QTCB_DOWNLOAD_CONTROL_FILE:
2447 direction = SBAL_FLAGS0_TYPE_WRITE;
2449 case FSF_QTCB_UPLOAD_CONTROL_FILE:
2450 direction = SBAL_FLAGS0_TYPE_READ;
2453 return ERR_PTR(-EINVAL);
2456 spin_lock_bh(&qdio->req_q_lock);
2457 if (zfcp_fsf_req_sbal_get(qdio))
2460 req = zfcp_fsf_req_create(qdio, fsf_cfdc->command, NULL);
2466 req->handler = zfcp_fsf_control_file_handler;
2468 sbale = zfcp_qdio_sbale_req(qdio, &req->queue_req);
2469 sbale[0].flags |= direction;
2471 bottom = &req->qtcb->bottom.support;
2472 bottom->operation_subtype = FSF_CFDC_OPERATION_SUBTYPE;
2473 bottom->option = fsf_cfdc->option;
2475 bytes = zfcp_qdio_sbals_from_sg(qdio, &req->queue_req,
2476 direction, fsf_cfdc->sg,
2477 FSF_MAX_SBALS_PER_REQ);
2478 if (bytes != ZFCP_CFDC_MAX_SIZE) {
2479 zfcp_fsf_req_free(req);
2483 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
2484 retval = zfcp_fsf_req_send(req);
2486 spin_unlock_bh(&qdio->req_q_lock);
2489 wait_for_completion(&req->completion);
2492 return ERR_PTR(retval);
2496 * zfcp_fsf_reqid_check - validate req_id contained in SBAL returned by QDIO
2497 * @adapter: pointer to struct zfcp_adapter
2498 * @sbal_idx: response queue index of SBAL to be processed
2500 void zfcp_fsf_reqid_check(struct zfcp_qdio *qdio, int sbal_idx)
2502 struct zfcp_adapter *adapter = qdio->adapter;
2503 struct qdio_buffer *sbal = qdio->resp_q.sbal[sbal_idx];
2504 struct qdio_buffer_element *sbale;
2505 struct zfcp_fsf_req *fsf_req;
2506 unsigned long req_id;
2509 for (idx = 0; idx < QDIO_MAX_ELEMENTS_PER_BUFFER; idx++) {
2511 sbale = &sbal->element[idx];
2512 req_id = (unsigned long) sbale->addr;
2513 fsf_req = zfcp_reqlist_find_rm(adapter->req_list, req_id);
2517 * Unknown request means that we have potentially memory
2518 * corruption and must stop the machine immediately.
2520 panic("error: unknown req_id (%lx) on adapter %s.\n",
2521 req_id, dev_name(&adapter->ccw_device->dev));
2523 fsf_req->queue_req.sbal_response = sbal_idx;
2524 fsf_req->queue_req.qdio_inb_usage =
2525 atomic_read(&qdio->resp_q.count);
2526 zfcp_fsf_req_complete(fsf_req);
2528 if (likely(sbale->flags & SBAL_FLAGS_LAST_ENTRY))