4 * Implementation of FSF commands.
6 * Copyright IBM Corporation 2002, 2010
9 #define KMSG_COMPONENT "zfcp"
10 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
12 #include <linux/blktrace_api.h>
13 #include <linux/slab.h>
14 #include <scsi/fc/fc_els.h>
18 #include "zfcp_qdio.h"
19 #include "zfcp_reqlist.h"
21 static void zfcp_fsf_request_timeout_handler(unsigned long data)
23 struct zfcp_adapter *adapter = (struct zfcp_adapter *) data;
24 zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED,
28 static void zfcp_fsf_start_timer(struct zfcp_fsf_req *fsf_req,
29 unsigned long timeout)
31 fsf_req->timer.function = zfcp_fsf_request_timeout_handler;
32 fsf_req->timer.data = (unsigned long) fsf_req->adapter;
33 fsf_req->timer.expires = jiffies + timeout;
34 add_timer(&fsf_req->timer);
37 static void zfcp_fsf_start_erp_timer(struct zfcp_fsf_req *fsf_req)
39 BUG_ON(!fsf_req->erp_action);
40 fsf_req->timer.function = zfcp_erp_timeout_handler;
41 fsf_req->timer.data = (unsigned long) fsf_req->erp_action;
42 fsf_req->timer.expires = jiffies + 30 * HZ;
43 add_timer(&fsf_req->timer);
46 /* association between FSF command and FSF QTCB type */
47 static u32 fsf_qtcb_type[] = {
48 [FSF_QTCB_FCP_CMND] = FSF_IO_COMMAND,
49 [FSF_QTCB_ABORT_FCP_CMND] = FSF_SUPPORT_COMMAND,
50 [FSF_QTCB_OPEN_PORT_WITH_DID] = FSF_SUPPORT_COMMAND,
51 [FSF_QTCB_OPEN_LUN] = FSF_SUPPORT_COMMAND,
52 [FSF_QTCB_CLOSE_LUN] = FSF_SUPPORT_COMMAND,
53 [FSF_QTCB_CLOSE_PORT] = FSF_SUPPORT_COMMAND,
54 [FSF_QTCB_CLOSE_PHYSICAL_PORT] = FSF_SUPPORT_COMMAND,
55 [FSF_QTCB_SEND_ELS] = FSF_SUPPORT_COMMAND,
56 [FSF_QTCB_SEND_GENERIC] = FSF_SUPPORT_COMMAND,
57 [FSF_QTCB_EXCHANGE_CONFIG_DATA] = FSF_CONFIG_COMMAND,
58 [FSF_QTCB_EXCHANGE_PORT_DATA] = FSF_PORT_COMMAND,
59 [FSF_QTCB_DOWNLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND,
60 [FSF_QTCB_UPLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND
63 static void zfcp_act_eval_err(struct zfcp_adapter *adapter, u32 table)
65 u16 subtable = table >> 16;
66 u16 rule = table & 0xffff;
67 const char *act_type[] = { "unknown", "OS", "WWPN", "DID", "LUN" };
69 if (subtable && subtable < ARRAY_SIZE(act_type))
70 dev_warn(&adapter->ccw_device->dev,
71 "Access denied according to ACT rule type %s, "
72 "rule %d\n", act_type[subtable], rule);
75 static void zfcp_fsf_access_denied_port(struct zfcp_fsf_req *req,
76 struct zfcp_port *port)
78 struct fsf_qtcb_header *header = &req->qtcb->header;
79 dev_warn(&req->adapter->ccw_device->dev,
80 "Access denied to port 0x%016Lx\n",
81 (unsigned long long)port->wwpn);
82 zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[0]);
83 zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[1]);
84 zfcp_erp_port_access_denied(port, "fspad_1", req);
85 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
88 static void zfcp_fsf_access_denied_unit(struct zfcp_fsf_req *req,
89 struct zfcp_unit *unit)
91 struct fsf_qtcb_header *header = &req->qtcb->header;
92 dev_warn(&req->adapter->ccw_device->dev,
93 "Access denied to unit 0x%016Lx on port 0x%016Lx\n",
94 (unsigned long long)unit->fcp_lun,
95 (unsigned long long)unit->port->wwpn);
96 zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[0]);
97 zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[1]);
98 zfcp_erp_unit_access_denied(unit, "fsuad_1", req);
99 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
102 static void zfcp_fsf_class_not_supp(struct zfcp_fsf_req *req)
104 dev_err(&req->adapter->ccw_device->dev, "FCP device not "
105 "operational because of an unsupported FC class\n");
106 zfcp_erp_adapter_shutdown(req->adapter, 0, "fscns_1", req);
107 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
111 * zfcp_fsf_req_free - free memory used by fsf request
112 * @fsf_req: pointer to struct zfcp_fsf_req
114 void zfcp_fsf_req_free(struct zfcp_fsf_req *req)
116 if (likely(req->pool)) {
117 if (likely(req->qtcb))
118 mempool_free(req->qtcb, req->adapter->pool.qtcb_pool);
119 mempool_free(req, req->pool);
123 if (likely(req->qtcb))
124 kmem_cache_free(zfcp_data.qtcb_cache, req->qtcb);
128 static void zfcp_fsf_status_read_port_closed(struct zfcp_fsf_req *req)
131 struct fsf_status_read_buffer *sr_buf = req->data;
132 struct zfcp_adapter *adapter = req->adapter;
133 struct zfcp_port *port;
134 int d_id = ntoh24(sr_buf->d_id);
136 read_lock_irqsave(&adapter->port_list_lock, flags);
137 list_for_each_entry(port, &adapter->port_list, list)
138 if (port->d_id == d_id) {
139 zfcp_erp_port_reopen(port, 0, "fssrpc1", req);
142 read_unlock_irqrestore(&adapter->port_list_lock, flags);
145 static void zfcp_fsf_link_down_info_eval(struct zfcp_fsf_req *req, char *id,
146 struct fsf_link_down_info *link_down)
148 struct zfcp_adapter *adapter = req->adapter;
150 if (atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED)
153 atomic_set_mask(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED, &adapter->status);
155 zfcp_scsi_schedule_rports_block(adapter);
160 switch (link_down->error_code) {
161 case FSF_PSQ_LINK_NO_LIGHT:
162 dev_warn(&req->adapter->ccw_device->dev,
163 "There is no light signal from the local "
164 "fibre channel cable\n");
166 case FSF_PSQ_LINK_WRAP_PLUG:
167 dev_warn(&req->adapter->ccw_device->dev,
168 "There is a wrap plug instead of a fibre "
171 case FSF_PSQ_LINK_NO_FCP:
172 dev_warn(&req->adapter->ccw_device->dev,
173 "The adjacent fibre channel node does not "
176 case FSF_PSQ_LINK_FIRMWARE_UPDATE:
177 dev_warn(&req->adapter->ccw_device->dev,
178 "The FCP device is suspended because of a "
179 "firmware update\n");
181 case FSF_PSQ_LINK_INVALID_WWPN:
182 dev_warn(&req->adapter->ccw_device->dev,
183 "The FCP device detected a WWPN that is "
184 "duplicate or not valid\n");
186 case FSF_PSQ_LINK_NO_NPIV_SUPPORT:
187 dev_warn(&req->adapter->ccw_device->dev,
188 "The fibre channel fabric does not support NPIV\n");
190 case FSF_PSQ_LINK_NO_FCP_RESOURCES:
191 dev_warn(&req->adapter->ccw_device->dev,
192 "The FCP adapter cannot support more NPIV ports\n");
194 case FSF_PSQ_LINK_NO_FABRIC_RESOURCES:
195 dev_warn(&req->adapter->ccw_device->dev,
196 "The adjacent switch cannot support "
197 "more NPIV ports\n");
199 case FSF_PSQ_LINK_FABRIC_LOGIN_UNABLE:
200 dev_warn(&req->adapter->ccw_device->dev,
201 "The FCP adapter could not log in to the "
202 "fibre channel fabric\n");
204 case FSF_PSQ_LINK_WWPN_ASSIGNMENT_CORRUPTED:
205 dev_warn(&req->adapter->ccw_device->dev,
206 "The WWPN assignment file on the FCP adapter "
207 "has been damaged\n");
209 case FSF_PSQ_LINK_MODE_TABLE_CURRUPTED:
210 dev_warn(&req->adapter->ccw_device->dev,
211 "The mode table on the FCP adapter "
212 "has been damaged\n");
214 case FSF_PSQ_LINK_NO_WWPN_ASSIGNMENT:
215 dev_warn(&req->adapter->ccw_device->dev,
216 "All NPIV ports on the FCP adapter have "
220 dev_warn(&req->adapter->ccw_device->dev,
221 "The link between the FCP adapter and "
222 "the FC fabric is down\n");
225 zfcp_erp_adapter_failed(adapter, id, req);
228 static void zfcp_fsf_status_read_link_down(struct zfcp_fsf_req *req)
230 struct fsf_status_read_buffer *sr_buf = req->data;
231 struct fsf_link_down_info *ldi =
232 (struct fsf_link_down_info *) &sr_buf->payload;
234 switch (sr_buf->status_subtype) {
235 case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK:
236 zfcp_fsf_link_down_info_eval(req, "fssrld1", ldi);
238 case FSF_STATUS_READ_SUB_FDISC_FAILED:
239 zfcp_fsf_link_down_info_eval(req, "fssrld2", ldi);
241 case FSF_STATUS_READ_SUB_FIRMWARE_UPDATE:
242 zfcp_fsf_link_down_info_eval(req, "fssrld3", NULL);
246 static void zfcp_fsf_status_read_handler(struct zfcp_fsf_req *req)
248 struct zfcp_adapter *adapter = req->adapter;
249 struct fsf_status_read_buffer *sr_buf = req->data;
251 if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) {
252 zfcp_dbf_hba_fsf_unsol("dism", adapter->dbf, sr_buf);
253 mempool_free(sr_buf, adapter->pool.status_read_data);
254 zfcp_fsf_req_free(req);
258 zfcp_dbf_hba_fsf_unsol("read", adapter->dbf, sr_buf);
260 switch (sr_buf->status_type) {
261 case FSF_STATUS_READ_PORT_CLOSED:
262 zfcp_fsf_status_read_port_closed(req);
264 case FSF_STATUS_READ_INCOMING_ELS:
265 zfcp_fc_incoming_els(req);
267 case FSF_STATUS_READ_SENSE_DATA_AVAIL:
269 case FSF_STATUS_READ_BIT_ERROR_THRESHOLD:
270 dev_warn(&adapter->ccw_device->dev,
271 "The error threshold for checksum statistics "
272 "has been exceeded\n");
273 zfcp_dbf_hba_berr(adapter->dbf, req);
275 case FSF_STATUS_READ_LINK_DOWN:
276 zfcp_fsf_status_read_link_down(req);
278 case FSF_STATUS_READ_LINK_UP:
279 dev_info(&adapter->ccw_device->dev,
280 "The local link has been restored\n");
281 /* All ports should be marked as ready to run again */
282 zfcp_erp_modify_adapter_status(adapter, "fssrh_1", NULL,
283 ZFCP_STATUS_COMMON_RUNNING,
285 zfcp_erp_adapter_reopen(adapter,
286 ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED |
287 ZFCP_STATUS_COMMON_ERP_FAILED,
290 case FSF_STATUS_READ_NOTIFICATION_LOST:
291 if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_ACT_UPDATED)
292 zfcp_erp_adapter_access_changed(adapter, "fssrh_3",
294 if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_INCOMING_ELS)
295 queue_work(adapter->work_queue, &adapter->scan_work);
297 case FSF_STATUS_READ_CFDC_UPDATED:
298 zfcp_erp_adapter_access_changed(adapter, "fssrh_4", req);
300 case FSF_STATUS_READ_FEATURE_UPDATE_ALERT:
301 adapter->adapter_features = sr_buf->payload.word[0];
305 mempool_free(sr_buf, adapter->pool.status_read_data);
306 zfcp_fsf_req_free(req);
308 atomic_inc(&adapter->stat_miss);
309 queue_work(adapter->work_queue, &adapter->stat_work);
312 static void zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req *req)
314 switch (req->qtcb->header.fsf_status_qual.word[0]) {
315 case FSF_SQ_FCP_RSP_AVAILABLE:
316 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
317 case FSF_SQ_NO_RETRY_POSSIBLE:
318 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
320 case FSF_SQ_COMMAND_ABORTED:
322 case FSF_SQ_NO_RECOM:
323 dev_err(&req->adapter->ccw_device->dev,
324 "The FCP adapter reported a problem "
325 "that cannot be recovered\n");
326 zfcp_erp_adapter_shutdown(req->adapter, 0, "fsfsqe1", req);
329 /* all non-return stats set FSFREQ_ERROR*/
330 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
333 static void zfcp_fsf_fsfstatus_eval(struct zfcp_fsf_req *req)
335 if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR))
338 switch (req->qtcb->header.fsf_status) {
339 case FSF_UNKNOWN_COMMAND:
340 dev_err(&req->adapter->ccw_device->dev,
341 "The FCP adapter does not recognize the command 0x%x\n",
342 req->qtcb->header.fsf_command);
343 zfcp_erp_adapter_shutdown(req->adapter, 0, "fsfse_1", req);
344 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
346 case FSF_ADAPTER_STATUS_AVAILABLE:
347 zfcp_fsf_fsfstatus_qual_eval(req);
352 static void zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *req)
354 struct zfcp_adapter *adapter = req->adapter;
355 struct fsf_qtcb *qtcb = req->qtcb;
356 union fsf_prot_status_qual *psq = &qtcb->prefix.prot_status_qual;
358 zfcp_dbf_hba_fsf_response(req);
360 if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) {
361 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
365 switch (qtcb->prefix.prot_status) {
367 case FSF_PROT_FSF_STATUS_PRESENTED:
369 case FSF_PROT_QTCB_VERSION_ERROR:
370 dev_err(&adapter->ccw_device->dev,
371 "QTCB version 0x%x not supported by FCP adapter "
372 "(0x%x to 0x%x)\n", FSF_QTCB_CURRENT_VERSION,
373 psq->word[0], psq->word[1]);
374 zfcp_erp_adapter_shutdown(adapter, 0, "fspse_1", req);
376 case FSF_PROT_ERROR_STATE:
377 case FSF_PROT_SEQ_NUMB_ERROR:
378 zfcp_erp_adapter_reopen(adapter, 0, "fspse_2", req);
379 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
381 case FSF_PROT_UNSUPP_QTCB_TYPE:
382 dev_err(&adapter->ccw_device->dev,
383 "The QTCB type is not supported by the FCP adapter\n");
384 zfcp_erp_adapter_shutdown(adapter, 0, "fspse_3", req);
386 case FSF_PROT_HOST_CONNECTION_INITIALIZING:
387 atomic_set_mask(ZFCP_STATUS_ADAPTER_HOST_CON_INIT,
390 case FSF_PROT_DUPLICATE_REQUEST_ID:
391 dev_err(&adapter->ccw_device->dev,
392 "0x%Lx is an ambiguous request identifier\n",
393 (unsigned long long)qtcb->bottom.support.req_handle);
394 zfcp_erp_adapter_shutdown(adapter, 0, "fspse_4", req);
396 case FSF_PROT_LINK_DOWN:
397 zfcp_fsf_link_down_info_eval(req, "fspse_5",
398 &psq->link_down_info);
399 /* go through reopen to flush pending requests */
400 zfcp_erp_adapter_reopen(adapter, 0, "fspse_6", req);
402 case FSF_PROT_REEST_QUEUE:
403 /* All ports should be marked as ready to run again */
404 zfcp_erp_modify_adapter_status(adapter, "fspse_7", NULL,
405 ZFCP_STATUS_COMMON_RUNNING,
407 zfcp_erp_adapter_reopen(adapter,
408 ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED |
409 ZFCP_STATUS_COMMON_ERP_FAILED,
413 dev_err(&adapter->ccw_device->dev,
414 "0x%x is not a valid transfer protocol status\n",
415 qtcb->prefix.prot_status);
416 zfcp_erp_adapter_shutdown(adapter, 0, "fspse_9", req);
418 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
422 * zfcp_fsf_req_complete - process completion of a FSF request
423 * @fsf_req: The FSF request that has been completed.
425 * When a request has been completed either from the FCP adapter,
426 * or it has been dismissed due to a queue shutdown, this function
427 * is called to process the completion status and trigger further
428 * events related to the FSF request.
430 static void zfcp_fsf_req_complete(struct zfcp_fsf_req *req)
432 if (unlikely(req->fsf_command == FSF_QTCB_UNSOLICITED_STATUS)) {
433 zfcp_fsf_status_read_handler(req);
437 del_timer(&req->timer);
438 zfcp_fsf_protstatus_eval(req);
439 zfcp_fsf_fsfstatus_eval(req);
443 zfcp_erp_notify(req->erp_action, 0);
445 if (likely(req->status & ZFCP_STATUS_FSFREQ_CLEANUP))
446 zfcp_fsf_req_free(req);
448 complete(&req->completion);
452 * zfcp_fsf_req_dismiss_all - dismiss all fsf requests
453 * @adapter: pointer to struct zfcp_adapter
455 * Never ever call this without shutting down the adapter first.
456 * Otherwise the adapter would continue using and corrupting s390 storage.
457 * Included BUG_ON() call to ensure this is done.
458 * ERP is supposed to be the only user of this function.
460 void zfcp_fsf_req_dismiss_all(struct zfcp_adapter *adapter)
462 struct zfcp_fsf_req *req, *tmp;
463 LIST_HEAD(remove_queue);
465 BUG_ON(atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP);
466 zfcp_reqlist_move(adapter->req_list, &remove_queue);
468 list_for_each_entry_safe(req, tmp, &remove_queue, list) {
469 list_del(&req->list);
470 req->status |= ZFCP_STATUS_FSFREQ_DISMISSED;
471 zfcp_fsf_req_complete(req);
475 static int zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req *req)
477 struct fsf_qtcb_bottom_config *bottom = &req->qtcb->bottom.config;
478 struct zfcp_adapter *adapter = req->adapter;
479 struct Scsi_Host *shost = adapter->scsi_host;
480 struct fc_els_flogi *nsp, *plogi;
482 /* adjust pointers for missing command code */
483 nsp = (struct fc_els_flogi *) ((u8 *)&bottom->nport_serv_param
485 plogi = (struct fc_els_flogi *) ((u8 *)&bottom->plogi_payload
489 memcpy(req->data, bottom, sizeof(*bottom));
491 fc_host_port_name(shost) = nsp->fl_wwpn;
492 fc_host_node_name(shost) = nsp->fl_wwnn;
493 fc_host_port_id(shost) = ntoh24(bottom->s_id);
494 fc_host_speed(shost) = bottom->fc_link_speed;
495 fc_host_supported_classes(shost) = FC_COS_CLASS2 | FC_COS_CLASS3;
497 adapter->hydra_version = bottom->adapter_type;
498 adapter->timer_ticks = bottom->timer_interval;
499 adapter->stat_read_buf_num = max(bottom->status_read_buf_num,
500 (u16)FSF_STATUS_READS_RECOM);
502 if (fc_host_permanent_port_name(shost) == -1)
503 fc_host_permanent_port_name(shost) = fc_host_port_name(shost);
505 switch (bottom->fc_topology) {
507 adapter->peer_d_id = ntoh24(bottom->peer_d_id);
508 adapter->peer_wwpn = plogi->fl_wwpn;
509 adapter->peer_wwnn = plogi->fl_wwnn;
510 fc_host_port_type(shost) = FC_PORTTYPE_PTP;
512 case FSF_TOPO_FABRIC:
513 fc_host_port_type(shost) = FC_PORTTYPE_NPORT;
516 fc_host_port_type(shost) = FC_PORTTYPE_NLPORT;
519 dev_err(&adapter->ccw_device->dev,
520 "Unknown or unsupported arbitrated loop "
521 "fibre channel topology detected\n");
522 zfcp_erp_adapter_shutdown(adapter, 0, "fsece_1", req);
529 static void zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *req)
531 struct zfcp_adapter *adapter = req->adapter;
532 struct fsf_qtcb *qtcb = req->qtcb;
533 struct fsf_qtcb_bottom_config *bottom = &qtcb->bottom.config;
534 struct Scsi_Host *shost = adapter->scsi_host;
536 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
539 adapter->fsf_lic_version = bottom->lic_version;
540 adapter->adapter_features = bottom->adapter_features;
541 adapter->connection_features = bottom->connection_features;
542 adapter->peer_wwpn = 0;
543 adapter->peer_wwnn = 0;
544 adapter->peer_d_id = 0;
546 switch (qtcb->header.fsf_status) {
548 if (zfcp_fsf_exchange_config_evaluate(req))
551 if (bottom->max_qtcb_size < sizeof(struct fsf_qtcb)) {
552 dev_err(&adapter->ccw_device->dev,
553 "FCP adapter maximum QTCB size (%d bytes) "
555 bottom->max_qtcb_size);
556 zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh1", req);
559 atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK,
562 case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE:
563 fc_host_node_name(shost) = 0;
564 fc_host_port_name(shost) = 0;
565 fc_host_port_id(shost) = 0;
566 fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN;
567 fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN;
568 adapter->hydra_version = 0;
570 atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK,
573 zfcp_fsf_link_down_info_eval(req, "fsecdh2",
574 &qtcb->header.fsf_status_qual.link_down_info);
577 zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh3", req);
581 if (adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT) {
582 adapter->hardware_version = bottom->hardware_version;
583 memcpy(fc_host_serial_number(shost), bottom->serial_number,
584 min(FC_SERIAL_NUMBER_SIZE, 17));
585 EBCASC(fc_host_serial_number(shost),
586 min(FC_SERIAL_NUMBER_SIZE, 17));
589 if (FSF_QTCB_CURRENT_VERSION < bottom->low_qtcb_version) {
590 dev_err(&adapter->ccw_device->dev,
591 "The FCP adapter only supports newer "
592 "control block versions\n");
593 zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh4", req);
596 if (FSF_QTCB_CURRENT_VERSION > bottom->high_qtcb_version) {
597 dev_err(&adapter->ccw_device->dev,
598 "The FCP adapter only supports older "
599 "control block versions\n");
600 zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh5", req);
604 static void zfcp_fsf_exchange_port_evaluate(struct zfcp_fsf_req *req)
606 struct zfcp_adapter *adapter = req->adapter;
607 struct fsf_qtcb_bottom_port *bottom = &req->qtcb->bottom.port;
608 struct Scsi_Host *shost = adapter->scsi_host;
611 memcpy(req->data, bottom, sizeof(*bottom));
613 if (adapter->connection_features & FSF_FEATURE_NPIV_MODE) {
614 fc_host_permanent_port_name(shost) = bottom->wwpn;
615 fc_host_port_type(shost) = FC_PORTTYPE_NPIV;
617 fc_host_permanent_port_name(shost) = fc_host_port_name(shost);
618 fc_host_maxframe_size(shost) = bottom->maximum_frame_size;
619 fc_host_supported_speeds(shost) = bottom->supported_speed;
620 memcpy(fc_host_supported_fc4s(shost), bottom->supported_fc4_types,
622 memcpy(fc_host_active_fc4s(shost), bottom->active_fc4_types,
626 static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *req)
628 struct fsf_qtcb *qtcb = req->qtcb;
630 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
633 switch (qtcb->header.fsf_status) {
635 zfcp_fsf_exchange_port_evaluate(req);
637 case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE:
638 zfcp_fsf_exchange_port_evaluate(req);
639 zfcp_fsf_link_down_info_eval(req, "fsepdh1",
640 &qtcb->header.fsf_status_qual.link_down_info);
645 static struct zfcp_fsf_req *zfcp_fsf_alloc(mempool_t *pool)
647 struct zfcp_fsf_req *req;
650 req = mempool_alloc(pool, GFP_ATOMIC);
652 req = kmalloc(sizeof(*req), GFP_ATOMIC);
657 memset(req, 0, sizeof(*req));
662 static struct fsf_qtcb *zfcp_qtcb_alloc(mempool_t *pool)
664 struct fsf_qtcb *qtcb;
667 qtcb = mempool_alloc(pool, GFP_ATOMIC);
669 qtcb = kmem_cache_alloc(zfcp_data.qtcb_cache, GFP_ATOMIC);
674 memset(qtcb, 0, sizeof(*qtcb));
678 static struct zfcp_fsf_req *zfcp_fsf_req_create(struct zfcp_qdio *qdio,
679 u32 fsf_cmd, u32 sbtype,
682 struct zfcp_adapter *adapter = qdio->adapter;
683 struct zfcp_fsf_req *req = zfcp_fsf_alloc(pool);
686 return ERR_PTR(-ENOMEM);
688 if (adapter->req_no == 0)
691 INIT_LIST_HEAD(&req->list);
692 init_timer(&req->timer);
693 init_completion(&req->completion);
695 req->adapter = adapter;
696 req->fsf_command = fsf_cmd;
697 req->req_id = adapter->req_no;
699 if (likely(fsf_cmd != FSF_QTCB_UNSOLICITED_STATUS)) {
701 req->qtcb = zfcp_qtcb_alloc(adapter->pool.qtcb_pool);
703 req->qtcb = zfcp_qtcb_alloc(NULL);
705 if (unlikely(!req->qtcb)) {
706 zfcp_fsf_req_free(req);
707 return ERR_PTR(-ENOMEM);
710 req->seq_no = adapter->fsf_req_seq_no;
711 req->qtcb->prefix.req_seq_no = adapter->fsf_req_seq_no;
712 req->qtcb->prefix.req_id = req->req_id;
713 req->qtcb->prefix.ulp_info = 26;
714 req->qtcb->prefix.qtcb_type = fsf_qtcb_type[req->fsf_command];
715 req->qtcb->prefix.qtcb_version = FSF_QTCB_CURRENT_VERSION;
716 req->qtcb->header.req_handle = req->req_id;
717 req->qtcb->header.fsf_command = req->fsf_command;
720 zfcp_qdio_req_init(adapter->qdio, &req->qdio_req, req->req_id, sbtype,
721 req->qtcb, sizeof(struct fsf_qtcb));
726 static int zfcp_fsf_req_send(struct zfcp_fsf_req *req)
728 struct zfcp_adapter *adapter = req->adapter;
729 struct zfcp_qdio *qdio = adapter->qdio;
730 int with_qtcb = (req->qtcb != NULL);
731 int req_id = req->req_id;
733 zfcp_reqlist_add(adapter->req_list, req);
735 req->qdio_req.qdio_outb_usage = atomic_read(&qdio->req_q.count);
736 req->issued = get_clock();
737 if (zfcp_qdio_send(qdio, &req->qdio_req)) {
738 del_timer(&req->timer);
739 /* lookup request again, list might have changed */
740 zfcp_reqlist_find_rm(adapter->req_list, req_id);
741 zfcp_erp_adapter_reopen(adapter, 0, "fsrs__1", req);
745 /* Don't increase for unsolicited status */
747 adapter->fsf_req_seq_no++;
754 * zfcp_fsf_status_read - send status read request
755 * @adapter: pointer to struct zfcp_adapter
756 * @req_flags: request flags
757 * Returns: 0 on success, ERROR otherwise
759 int zfcp_fsf_status_read(struct zfcp_qdio *qdio)
761 struct zfcp_adapter *adapter = qdio->adapter;
762 struct zfcp_fsf_req *req;
763 struct fsf_status_read_buffer *sr_buf;
766 spin_lock_bh(&qdio->req_q_lock);
767 if (zfcp_qdio_sbal_get(qdio))
770 req = zfcp_fsf_req_create(qdio, FSF_QTCB_UNSOLICITED_STATUS, 0,
771 adapter->pool.status_read_req);
773 retval = PTR_ERR(req);
777 sr_buf = mempool_alloc(adapter->pool.status_read_data, GFP_ATOMIC);
782 memset(sr_buf, 0, sizeof(*sr_buf));
785 zfcp_qdio_fill_next(qdio, &req->qdio_req, sr_buf, sizeof(*sr_buf));
786 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
788 retval = zfcp_fsf_req_send(req);
790 goto failed_req_send;
795 mempool_free(sr_buf, adapter->pool.status_read_data);
797 zfcp_fsf_req_free(req);
798 zfcp_dbf_hba_fsf_unsol("fail", adapter->dbf, NULL);
800 spin_unlock_bh(&qdio->req_q_lock);
804 static void zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req *req)
806 struct zfcp_unit *unit = req->data;
807 union fsf_status_qual *fsq = &req->qtcb->header.fsf_status_qual;
809 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
812 switch (req->qtcb->header.fsf_status) {
813 case FSF_PORT_HANDLE_NOT_VALID:
814 if (fsq->word[0] == fsq->word[1]) {
815 zfcp_erp_adapter_reopen(unit->port->adapter, 0,
817 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
820 case FSF_LUN_HANDLE_NOT_VALID:
821 if (fsq->word[0] == fsq->word[1]) {
822 zfcp_erp_port_reopen(unit->port, 0, "fsafch2", req);
823 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
826 case FSF_FCP_COMMAND_DOES_NOT_EXIST:
827 req->status |= ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED;
830 zfcp_erp_port_boxed(unit->port, "fsafch3", req);
831 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
834 zfcp_erp_unit_boxed(unit, "fsafch4", req);
835 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
837 case FSF_ADAPTER_STATUS_AVAILABLE:
838 switch (fsq->word[0]) {
839 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
840 zfcp_fc_test_link(unit->port);
842 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
843 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
848 req->status |= ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED;
854 * zfcp_fsf_abort_fcp_command - abort running SCSI command
855 * @old_req_id: unsigned long
856 * @unit: pointer to struct zfcp_unit
857 * Returns: pointer to struct zfcp_fsf_req
860 struct zfcp_fsf_req *zfcp_fsf_abort_fcp_command(unsigned long old_req_id,
861 struct zfcp_unit *unit)
863 struct zfcp_fsf_req *req = NULL;
864 struct zfcp_qdio *qdio = unit->port->adapter->qdio;
866 spin_lock_bh(&qdio->req_q_lock);
867 if (zfcp_qdio_sbal_get(qdio))
869 req = zfcp_fsf_req_create(qdio, FSF_QTCB_ABORT_FCP_CMND,
870 SBAL_FLAGS0_TYPE_READ,
871 qdio->adapter->pool.scsi_abort);
877 if (unlikely(!(atomic_read(&unit->status) &
878 ZFCP_STATUS_COMMON_UNBLOCKED)))
881 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
884 req->handler = zfcp_fsf_abort_fcp_command_handler;
885 req->qtcb->header.lun_handle = unit->handle;
886 req->qtcb->header.port_handle = unit->port->handle;
887 req->qtcb->bottom.support.req_handle = (u64) old_req_id;
889 zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT);
890 if (!zfcp_fsf_req_send(req))
894 zfcp_fsf_req_free(req);
897 spin_unlock_bh(&qdio->req_q_lock);
901 static void zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *req)
903 struct zfcp_adapter *adapter = req->adapter;
904 struct zfcp_fsf_ct_els *ct = req->data;
905 struct fsf_qtcb_header *header = &req->qtcb->header;
907 ct->status = -EINVAL;
909 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
912 switch (header->fsf_status) {
914 zfcp_dbf_san_ct_response(req);
917 case FSF_SERVICE_CLASS_NOT_SUPPORTED:
918 zfcp_fsf_class_not_supp(req);
920 case FSF_ADAPTER_STATUS_AVAILABLE:
921 switch (header->fsf_status_qual.word[0]){
922 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
923 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
924 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
928 case FSF_ACCESS_DENIED:
931 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
933 case FSF_PORT_HANDLE_NOT_VALID:
934 zfcp_erp_adapter_reopen(adapter, 0, "fsscth1", req);
936 case FSF_GENERIC_COMMAND_REJECTED:
937 case FSF_PAYLOAD_SIZE_MISMATCH:
938 case FSF_REQUEST_SIZE_TOO_LARGE:
939 case FSF_RESPONSE_SIZE_TOO_LARGE:
940 case FSF_SBAL_MISMATCH:
941 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
947 ct->handler(ct->handler_data);
950 static void zfcp_fsf_setup_ct_els_unchained(struct zfcp_qdio *qdio,
951 struct zfcp_qdio_req *q_req,
952 struct scatterlist *sg_req,
953 struct scatterlist *sg_resp)
955 zfcp_qdio_fill_next(qdio, q_req, sg_virt(sg_req), sg_req->length);
956 zfcp_qdio_fill_next(qdio, q_req, sg_virt(sg_resp), sg_resp->length);
957 zfcp_qdio_set_sbale_last(qdio, q_req);
960 static int zfcp_fsf_setup_ct_els_sbals(struct zfcp_fsf_req *req,
961 struct scatterlist *sg_req,
962 struct scatterlist *sg_resp,
965 struct zfcp_adapter *adapter = req->adapter;
966 u32 feat = adapter->adapter_features;
969 if (!(feat & FSF_FEATURE_ELS_CT_CHAINED_SBALS)) {
970 if (!zfcp_qdio_sg_one_sbale(sg_req) ||
971 !zfcp_qdio_sg_one_sbale(sg_resp))
974 zfcp_fsf_setup_ct_els_unchained(adapter->qdio, &req->qdio_req,
979 /* use single, unchained SBAL if it can hold the request */
980 if (zfcp_qdio_sg_one_sbale(sg_req) && zfcp_qdio_sg_one_sbale(sg_resp)) {
981 zfcp_fsf_setup_ct_els_unchained(adapter->qdio, &req->qdio_req,
986 bytes = zfcp_qdio_sbals_from_sg(adapter->qdio, &req->qdio_req,
990 req->qtcb->bottom.support.req_buf_length = bytes;
991 zfcp_qdio_skip_to_last_sbale(&req->qdio_req);
993 bytes = zfcp_qdio_sbals_from_sg(adapter->qdio, &req->qdio_req,
995 req->qtcb->bottom.support.resp_buf_length = bytes;
1002 static int zfcp_fsf_setup_ct_els(struct zfcp_fsf_req *req,
1003 struct scatterlist *sg_req,
1004 struct scatterlist *sg_resp,
1005 int max_sbals, unsigned int timeout)
1009 ret = zfcp_fsf_setup_ct_els_sbals(req, sg_req, sg_resp, max_sbals);
1013 /* common settings for ct/gs and els requests */
1015 timeout = 255; /* max value accepted by hardware */
1016 req->qtcb->bottom.support.service_class = FSF_CLASS_3;
1017 req->qtcb->bottom.support.timeout = timeout;
1018 zfcp_fsf_start_timer(req, (timeout + 10) * HZ);
1024 * zfcp_fsf_send_ct - initiate a Generic Service request (FC-GS)
1025 * @ct: pointer to struct zfcp_send_ct with data for request
1026 * @pool: if non-null this mempool is used to allocate struct zfcp_fsf_req
1028 int zfcp_fsf_send_ct(struct zfcp_fc_wka_port *wka_port,
1029 struct zfcp_fsf_ct_els *ct, mempool_t *pool,
1030 unsigned int timeout)
1032 struct zfcp_qdio *qdio = wka_port->adapter->qdio;
1033 struct zfcp_fsf_req *req;
1036 spin_lock_bh(&qdio->req_q_lock);
1037 if (zfcp_qdio_sbal_get(qdio))
1040 req = zfcp_fsf_req_create(qdio, FSF_QTCB_SEND_GENERIC,
1041 SBAL_FLAGS0_TYPE_WRITE_READ, pool);
1048 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1049 ret = zfcp_fsf_setup_ct_els(req, ct->req, ct->resp,
1050 ZFCP_FSF_MAX_SBALS_PER_REQ, timeout);
1054 req->handler = zfcp_fsf_send_ct_handler;
1055 req->qtcb->header.port_handle = wka_port->handle;
1058 zfcp_dbf_san_ct_request(req, wka_port->d_id);
1060 ret = zfcp_fsf_req_send(req);
1067 zfcp_fsf_req_free(req);
1069 spin_unlock_bh(&qdio->req_q_lock);
1073 static void zfcp_fsf_send_els_handler(struct zfcp_fsf_req *req)
1075 struct zfcp_fsf_ct_els *send_els = req->data;
1076 struct zfcp_port *port = send_els->port;
1077 struct fsf_qtcb_header *header = &req->qtcb->header;
1079 send_els->status = -EINVAL;
1081 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1082 goto skip_fsfstatus;
1084 switch (header->fsf_status) {
1086 zfcp_dbf_san_els_response(req);
1087 send_els->status = 0;
1089 case FSF_SERVICE_CLASS_NOT_SUPPORTED:
1090 zfcp_fsf_class_not_supp(req);
1092 case FSF_ADAPTER_STATUS_AVAILABLE:
1093 switch (header->fsf_status_qual.word[0]){
1094 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1095 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1096 case FSF_SQ_RETRY_IF_POSSIBLE:
1097 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1101 case FSF_ELS_COMMAND_REJECTED:
1102 case FSF_PAYLOAD_SIZE_MISMATCH:
1103 case FSF_REQUEST_SIZE_TOO_LARGE:
1104 case FSF_RESPONSE_SIZE_TOO_LARGE:
1106 case FSF_ACCESS_DENIED:
1108 zfcp_fsf_access_denied_port(req, port);
1110 case FSF_SBAL_MISMATCH:
1111 /* should never occure, avoided in zfcp_fsf_send_els */
1114 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1118 if (send_els->handler)
1119 send_els->handler(send_els->handler_data);
1123 * zfcp_fsf_send_els - initiate an ELS command (FC-FS)
1124 * @els: pointer to struct zfcp_send_els with data for the command
1126 int zfcp_fsf_send_els(struct zfcp_adapter *adapter, u32 d_id,
1127 struct zfcp_fsf_ct_els *els, unsigned int timeout)
1129 struct zfcp_fsf_req *req;
1130 struct zfcp_qdio *qdio = adapter->qdio;
1133 spin_lock_bh(&qdio->req_q_lock);
1134 if (zfcp_qdio_sbal_get(qdio))
1137 req = zfcp_fsf_req_create(qdio, FSF_QTCB_SEND_ELS,
1138 SBAL_FLAGS0_TYPE_WRITE_READ, NULL);
1145 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1146 ret = zfcp_fsf_setup_ct_els(req, els->req, els->resp, 2, timeout);
1151 hton24(req->qtcb->bottom.support.d_id, d_id);
1152 req->handler = zfcp_fsf_send_els_handler;
1155 zfcp_dbf_san_els_request(req);
1157 ret = zfcp_fsf_req_send(req);
1164 zfcp_fsf_req_free(req);
1166 spin_unlock_bh(&qdio->req_q_lock);
1170 int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action)
1172 struct zfcp_fsf_req *req;
1173 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1176 spin_lock_bh(&qdio->req_q_lock);
1177 if (zfcp_qdio_sbal_get(qdio))
1180 req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_CONFIG_DATA,
1181 SBAL_FLAGS0_TYPE_READ,
1182 qdio->adapter->pool.erp_req);
1185 retval = PTR_ERR(req);
1189 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1190 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1192 req->qtcb->bottom.config.feature_selection =
1194 FSF_FEATURE_LUN_SHARING |
1195 FSF_FEATURE_NOTIFICATION_LOST |
1196 FSF_FEATURE_UPDATE_ALERT;
1197 req->erp_action = erp_action;
1198 req->handler = zfcp_fsf_exchange_config_data_handler;
1199 erp_action->fsf_req_id = req->req_id;
1201 zfcp_fsf_start_erp_timer(req);
1202 retval = zfcp_fsf_req_send(req);
1204 zfcp_fsf_req_free(req);
1205 erp_action->fsf_req_id = 0;
1208 spin_unlock_bh(&qdio->req_q_lock);
1212 int zfcp_fsf_exchange_config_data_sync(struct zfcp_qdio *qdio,
1213 struct fsf_qtcb_bottom_config *data)
1215 struct zfcp_fsf_req *req = NULL;
1218 spin_lock_bh(&qdio->req_q_lock);
1219 if (zfcp_qdio_sbal_get(qdio))
1222 req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_CONFIG_DATA,
1223 SBAL_FLAGS0_TYPE_READ, NULL);
1226 retval = PTR_ERR(req);
1230 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1231 req->handler = zfcp_fsf_exchange_config_data_handler;
1233 req->qtcb->bottom.config.feature_selection =
1235 FSF_FEATURE_LUN_SHARING |
1236 FSF_FEATURE_NOTIFICATION_LOST |
1237 FSF_FEATURE_UPDATE_ALERT;
1242 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1243 retval = zfcp_fsf_req_send(req);
1244 spin_unlock_bh(&qdio->req_q_lock);
1246 wait_for_completion(&req->completion);
1248 zfcp_fsf_req_free(req);
1252 spin_unlock_bh(&qdio->req_q_lock);
1257 * zfcp_fsf_exchange_port_data - request information about local port
1258 * @erp_action: ERP action for the adapter for which port data is requested
1259 * Returns: 0 on success, error otherwise
1261 int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action)
1263 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1264 struct zfcp_fsf_req *req;
1267 if (!(qdio->adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT))
1270 spin_lock_bh(&qdio->req_q_lock);
1271 if (zfcp_qdio_sbal_get(qdio))
1274 req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_PORT_DATA,
1275 SBAL_FLAGS0_TYPE_READ,
1276 qdio->adapter->pool.erp_req);
1279 retval = PTR_ERR(req);
1283 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1284 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1286 req->handler = zfcp_fsf_exchange_port_data_handler;
1287 req->erp_action = erp_action;
1288 erp_action->fsf_req_id = req->req_id;
1290 zfcp_fsf_start_erp_timer(req);
1291 retval = zfcp_fsf_req_send(req);
1293 zfcp_fsf_req_free(req);
1294 erp_action->fsf_req_id = 0;
1297 spin_unlock_bh(&qdio->req_q_lock);
1302 * zfcp_fsf_exchange_port_data_sync - request information about local port
1303 * @qdio: pointer to struct zfcp_qdio
1304 * @data: pointer to struct fsf_qtcb_bottom_port
1305 * Returns: 0 on success, error otherwise
1307 int zfcp_fsf_exchange_port_data_sync(struct zfcp_qdio *qdio,
1308 struct fsf_qtcb_bottom_port *data)
1310 struct zfcp_fsf_req *req = NULL;
1313 if (!(qdio->adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT))
1316 spin_lock_bh(&qdio->req_q_lock);
1317 if (zfcp_qdio_sbal_get(qdio))
1320 req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_PORT_DATA,
1321 SBAL_FLAGS0_TYPE_READ, NULL);
1324 retval = PTR_ERR(req);
1331 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1333 req->handler = zfcp_fsf_exchange_port_data_handler;
1334 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1335 retval = zfcp_fsf_req_send(req);
1336 spin_unlock_bh(&qdio->req_q_lock);
1339 wait_for_completion(&req->completion);
1341 zfcp_fsf_req_free(req);
1346 spin_unlock_bh(&qdio->req_q_lock);
1350 static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req *req)
1352 struct zfcp_port *port = req->data;
1353 struct fsf_qtcb_header *header = &req->qtcb->header;
1354 struct fc_els_flogi *plogi;
1356 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1359 switch (header->fsf_status) {
1360 case FSF_PORT_ALREADY_OPEN:
1362 case FSF_ACCESS_DENIED:
1363 zfcp_fsf_access_denied_port(req, port);
1365 case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED:
1366 dev_warn(&req->adapter->ccw_device->dev,
1367 "Not enough FCP adapter resources to open "
1368 "remote port 0x%016Lx\n",
1369 (unsigned long long)port->wwpn);
1370 zfcp_erp_port_failed(port, "fsoph_1", req);
1371 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1373 case FSF_ADAPTER_STATUS_AVAILABLE:
1374 switch (header->fsf_status_qual.word[0]) {
1375 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1376 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1377 case FSF_SQ_NO_RETRY_POSSIBLE:
1378 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1383 port->handle = header->port_handle;
1384 atomic_set_mask(ZFCP_STATUS_COMMON_OPEN |
1385 ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
1386 atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED |
1387 ZFCP_STATUS_COMMON_ACCESS_BOXED,
1389 /* check whether D_ID has changed during open */
1391 * FIXME: This check is not airtight, as the FCP channel does
1392 * not monitor closures of target port connections caused on
1393 * the remote side. Thus, they might miss out on invalidating
1394 * locally cached WWPNs (and other N_Port parameters) of gone
1395 * target ports. So, our heroic attempt to make things safe
1396 * could be undermined by 'open port' response data tagged with
1397 * obsolete WWPNs. Another reason to monitor potential
1398 * connection closures ourself at least (by interpreting
1399 * incoming ELS' and unsolicited status). It just crosses my
1400 * mind that one should be able to cross-check by means of
1401 * another GID_PN straight after a port has been opened.
1402 * Alternately, an ADISC/PDISC ELS should suffice, as well.
1404 plogi = (struct fc_els_flogi *) req->qtcb->bottom.support.els;
1405 if (req->qtcb->bottom.support.els1_length >=
1407 zfcp_fc_plogi_evaluate(port, plogi);
1409 case FSF_UNKNOWN_OP_SUBTYPE:
1410 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1415 put_device(&port->dev);
1419 * zfcp_fsf_open_port - create and send open port request
1420 * @erp_action: pointer to struct zfcp_erp_action
1421 * Returns: 0 on success, error otherwise
1423 int zfcp_fsf_open_port(struct zfcp_erp_action *erp_action)
1425 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1426 struct zfcp_port *port = erp_action->port;
1427 struct zfcp_fsf_req *req;
1430 spin_lock_bh(&qdio->req_q_lock);
1431 if (zfcp_qdio_sbal_get(qdio))
1434 req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_PORT_WITH_DID,
1435 SBAL_FLAGS0_TYPE_READ,
1436 qdio->adapter->pool.erp_req);
1439 retval = PTR_ERR(req);
1443 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1444 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1446 req->handler = zfcp_fsf_open_port_handler;
1447 hton24(req->qtcb->bottom.support.d_id, port->d_id);
1449 req->erp_action = erp_action;
1450 erp_action->fsf_req_id = req->req_id;
1451 get_device(&port->dev);
1453 zfcp_fsf_start_erp_timer(req);
1454 retval = zfcp_fsf_req_send(req);
1456 zfcp_fsf_req_free(req);
1457 erp_action->fsf_req_id = 0;
1458 put_device(&port->dev);
1461 spin_unlock_bh(&qdio->req_q_lock);
1465 static void zfcp_fsf_close_port_handler(struct zfcp_fsf_req *req)
1467 struct zfcp_port *port = req->data;
1469 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1472 switch (req->qtcb->header.fsf_status) {
1473 case FSF_PORT_HANDLE_NOT_VALID:
1474 zfcp_erp_adapter_reopen(port->adapter, 0, "fscph_1", req);
1475 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1477 case FSF_ADAPTER_STATUS_AVAILABLE:
1480 zfcp_erp_modify_port_status(port, "fscph_2", req,
1481 ZFCP_STATUS_COMMON_OPEN,
1488 * zfcp_fsf_close_port - create and send close port request
1489 * @erp_action: pointer to struct zfcp_erp_action
1490 * Returns: 0 on success, error otherwise
1492 int zfcp_fsf_close_port(struct zfcp_erp_action *erp_action)
1494 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1495 struct zfcp_fsf_req *req;
1498 spin_lock_bh(&qdio->req_q_lock);
1499 if (zfcp_qdio_sbal_get(qdio))
1502 req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PORT,
1503 SBAL_FLAGS0_TYPE_READ,
1504 qdio->adapter->pool.erp_req);
1507 retval = PTR_ERR(req);
1511 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1512 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1514 req->handler = zfcp_fsf_close_port_handler;
1515 req->data = erp_action->port;
1516 req->erp_action = erp_action;
1517 req->qtcb->header.port_handle = erp_action->port->handle;
1518 erp_action->fsf_req_id = req->req_id;
1520 zfcp_fsf_start_erp_timer(req);
1521 retval = zfcp_fsf_req_send(req);
1523 zfcp_fsf_req_free(req);
1524 erp_action->fsf_req_id = 0;
1527 spin_unlock_bh(&qdio->req_q_lock);
1531 static void zfcp_fsf_open_wka_port_handler(struct zfcp_fsf_req *req)
1533 struct zfcp_fc_wka_port *wka_port = req->data;
1534 struct fsf_qtcb_header *header = &req->qtcb->header;
1536 if (req->status & ZFCP_STATUS_FSFREQ_ERROR) {
1537 wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE;
1541 switch (header->fsf_status) {
1542 case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED:
1543 dev_warn(&req->adapter->ccw_device->dev,
1544 "Opening WKA port 0x%x failed\n", wka_port->d_id);
1546 case FSF_ADAPTER_STATUS_AVAILABLE:
1547 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1549 case FSF_ACCESS_DENIED:
1550 wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE;
1553 wka_port->handle = header->port_handle;
1555 case FSF_PORT_ALREADY_OPEN:
1556 wka_port->status = ZFCP_FC_WKA_PORT_ONLINE;
1559 wake_up(&wka_port->completion_wq);
1563 * zfcp_fsf_open_wka_port - create and send open wka-port request
1564 * @wka_port: pointer to struct zfcp_fc_wka_port
1565 * Returns: 0 on success, error otherwise
1567 int zfcp_fsf_open_wka_port(struct zfcp_fc_wka_port *wka_port)
1569 struct zfcp_qdio *qdio = wka_port->adapter->qdio;
1570 struct zfcp_fsf_req *req;
1573 spin_lock_bh(&qdio->req_q_lock);
1574 if (zfcp_qdio_sbal_get(qdio))
1577 req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_PORT_WITH_DID,
1578 SBAL_FLAGS0_TYPE_READ,
1579 qdio->adapter->pool.erp_req);
1581 if (unlikely(IS_ERR(req))) {
1582 retval = PTR_ERR(req);
1586 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1587 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1589 req->handler = zfcp_fsf_open_wka_port_handler;
1590 hton24(req->qtcb->bottom.support.d_id, wka_port->d_id);
1591 req->data = wka_port;
1593 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1594 retval = zfcp_fsf_req_send(req);
1596 zfcp_fsf_req_free(req);
1598 spin_unlock_bh(&qdio->req_q_lock);
1602 static void zfcp_fsf_close_wka_port_handler(struct zfcp_fsf_req *req)
1604 struct zfcp_fc_wka_port *wka_port = req->data;
1606 if (req->qtcb->header.fsf_status == FSF_PORT_HANDLE_NOT_VALID) {
1607 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1608 zfcp_erp_adapter_reopen(wka_port->adapter, 0, "fscwph1", req);
1611 wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE;
1612 wake_up(&wka_port->completion_wq);
1616 * zfcp_fsf_close_wka_port - create and send close wka port request
1617 * @wka_port: WKA port to open
1618 * Returns: 0 on success, error otherwise
1620 int zfcp_fsf_close_wka_port(struct zfcp_fc_wka_port *wka_port)
1622 struct zfcp_qdio *qdio = wka_port->adapter->qdio;
1623 struct zfcp_fsf_req *req;
1626 spin_lock_bh(&qdio->req_q_lock);
1627 if (zfcp_qdio_sbal_get(qdio))
1630 req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PORT,
1631 SBAL_FLAGS0_TYPE_READ,
1632 qdio->adapter->pool.erp_req);
1634 if (unlikely(IS_ERR(req))) {
1635 retval = PTR_ERR(req);
1639 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1640 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1642 req->handler = zfcp_fsf_close_wka_port_handler;
1643 req->data = wka_port;
1644 req->qtcb->header.port_handle = wka_port->handle;
1646 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1647 retval = zfcp_fsf_req_send(req);
1649 zfcp_fsf_req_free(req);
1651 spin_unlock_bh(&qdio->req_q_lock);
1655 static void zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *req)
1657 struct zfcp_port *port = req->data;
1658 struct fsf_qtcb_header *header = &req->qtcb->header;
1659 struct zfcp_unit *unit;
1661 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1664 switch (header->fsf_status) {
1665 case FSF_PORT_HANDLE_NOT_VALID:
1666 zfcp_erp_adapter_reopen(port->adapter, 0, "fscpph1", req);
1667 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1669 case FSF_ACCESS_DENIED:
1670 zfcp_fsf_access_denied_port(req, port);
1672 case FSF_PORT_BOXED:
1673 /* can't use generic zfcp_erp_modify_port_status because
1674 * ZFCP_STATUS_COMMON_OPEN must not be reset for the port */
1675 atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
1676 read_lock(&port->unit_list_lock);
1677 list_for_each_entry(unit, &port->unit_list, list)
1678 atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN,
1680 read_unlock(&port->unit_list_lock);
1681 zfcp_erp_port_boxed(port, "fscpph2", req);
1682 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1684 case FSF_ADAPTER_STATUS_AVAILABLE:
1685 switch (header->fsf_status_qual.word[0]) {
1686 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1688 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1689 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1694 /* can't use generic zfcp_erp_modify_port_status because
1695 * ZFCP_STATUS_COMMON_OPEN must not be reset for the port
1697 atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
1698 read_lock(&port->unit_list_lock);
1699 list_for_each_entry(unit, &port->unit_list, list)
1700 atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN,
1702 read_unlock(&port->unit_list_lock);
1708 * zfcp_fsf_close_physical_port - close physical port
1709 * @erp_action: pointer to struct zfcp_erp_action
1710 * Returns: 0 on success
1712 int zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action)
1714 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1715 struct zfcp_fsf_req *req;
1718 spin_lock_bh(&qdio->req_q_lock);
1719 if (zfcp_qdio_sbal_get(qdio))
1722 req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PHYSICAL_PORT,
1723 SBAL_FLAGS0_TYPE_READ,
1724 qdio->adapter->pool.erp_req);
1727 retval = PTR_ERR(req);
1731 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1732 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1734 req->data = erp_action->port;
1735 req->qtcb->header.port_handle = erp_action->port->handle;
1736 req->erp_action = erp_action;
1737 req->handler = zfcp_fsf_close_physical_port_handler;
1738 erp_action->fsf_req_id = req->req_id;
1740 zfcp_fsf_start_erp_timer(req);
1741 retval = zfcp_fsf_req_send(req);
1743 zfcp_fsf_req_free(req);
1744 erp_action->fsf_req_id = 0;
1747 spin_unlock_bh(&qdio->req_q_lock);
1751 static void zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *req)
1753 struct zfcp_adapter *adapter = req->adapter;
1754 struct zfcp_unit *unit = req->data;
1755 struct fsf_qtcb_header *header = &req->qtcb->header;
1756 struct fsf_qtcb_bottom_support *bottom = &req->qtcb->bottom.support;
1757 struct fsf_queue_designator *queue_designator =
1758 &header->fsf_status_qual.fsf_queue_designator;
1759 int exclusive, readwrite;
1761 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1764 atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED |
1765 ZFCP_STATUS_COMMON_ACCESS_BOXED |
1766 ZFCP_STATUS_UNIT_SHARED |
1767 ZFCP_STATUS_UNIT_READONLY,
1770 switch (header->fsf_status) {
1772 case FSF_PORT_HANDLE_NOT_VALID:
1773 zfcp_erp_adapter_reopen(unit->port->adapter, 0, "fsouh_1", req);
1775 case FSF_LUN_ALREADY_OPEN:
1777 case FSF_ACCESS_DENIED:
1778 zfcp_fsf_access_denied_unit(req, unit);
1779 atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED, &unit->status);
1780 atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status);
1782 case FSF_PORT_BOXED:
1783 zfcp_erp_port_boxed(unit->port, "fsouh_2", req);
1784 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1786 case FSF_LUN_SHARING_VIOLATION:
1787 if (header->fsf_status_qual.word[0])
1788 dev_warn(&adapter->ccw_device->dev,
1789 "LUN 0x%Lx on port 0x%Lx is already in "
1790 "use by CSS%d, MIF Image ID %x\n",
1791 (unsigned long long)unit->fcp_lun,
1792 (unsigned long long)unit->port->wwpn,
1793 queue_designator->cssid,
1794 queue_designator->hla);
1796 zfcp_act_eval_err(adapter,
1797 header->fsf_status_qual.word[2]);
1798 zfcp_erp_unit_access_denied(unit, "fsouh_3", req);
1799 atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED, &unit->status);
1800 atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status);
1801 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1803 case FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED:
1804 dev_warn(&adapter->ccw_device->dev,
1805 "No handle is available for LUN "
1806 "0x%016Lx on port 0x%016Lx\n",
1807 (unsigned long long)unit->fcp_lun,
1808 (unsigned long long)unit->port->wwpn);
1809 zfcp_erp_unit_failed(unit, "fsouh_4", req);
1811 case FSF_INVALID_COMMAND_OPTION:
1812 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1814 case FSF_ADAPTER_STATUS_AVAILABLE:
1815 switch (header->fsf_status_qual.word[0]) {
1816 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1817 zfcp_fc_test_link(unit->port);
1819 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1820 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1826 unit->handle = header->lun_handle;
1827 atomic_set_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status);
1829 if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE) &&
1830 (adapter->adapter_features & FSF_FEATURE_LUN_SHARING) &&
1831 !zfcp_ccw_priv_sch(adapter)) {
1832 exclusive = (bottom->lun_access_info &
1833 FSF_UNIT_ACCESS_EXCLUSIVE);
1834 readwrite = (bottom->lun_access_info &
1835 FSF_UNIT_ACCESS_OUTBOUND_TRANSFER);
1838 atomic_set_mask(ZFCP_STATUS_UNIT_SHARED,
1842 atomic_set_mask(ZFCP_STATUS_UNIT_READONLY,
1844 dev_info(&adapter->ccw_device->dev,
1845 "SCSI device at LUN 0x%016Lx on port "
1846 "0x%016Lx opened read-only\n",
1847 (unsigned long long)unit->fcp_lun,
1848 (unsigned long long)unit->port->wwpn);
1851 if (exclusive && !readwrite) {
1852 dev_err(&adapter->ccw_device->dev,
1853 "Exclusive read-only access not "
1854 "supported (unit 0x%016Lx, "
1856 (unsigned long long)unit->fcp_lun,
1857 (unsigned long long)unit->port->wwpn);
1858 zfcp_erp_unit_failed(unit, "fsouh_5", req);
1859 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1860 zfcp_erp_unit_shutdown(unit, 0, "fsouh_6", req);
1861 } else if (!exclusive && readwrite) {
1862 dev_err(&adapter->ccw_device->dev,
1863 "Shared read-write access not "
1864 "supported (unit 0x%016Lx, port "
1866 (unsigned long long)unit->fcp_lun,
1867 (unsigned long long)unit->port->wwpn);
1868 zfcp_erp_unit_failed(unit, "fsouh_7", req);
1869 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1870 zfcp_erp_unit_shutdown(unit, 0, "fsouh_8", req);
1878 * zfcp_fsf_open_unit - open unit
1879 * @erp_action: pointer to struct zfcp_erp_action
1880 * Returns: 0 on success, error otherwise
1882 int zfcp_fsf_open_unit(struct zfcp_erp_action *erp_action)
1884 struct zfcp_adapter *adapter = erp_action->adapter;
1885 struct zfcp_qdio *qdio = adapter->qdio;
1886 struct zfcp_fsf_req *req;
1889 spin_lock_bh(&qdio->req_q_lock);
1890 if (zfcp_qdio_sbal_get(qdio))
1893 req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_LUN,
1894 SBAL_FLAGS0_TYPE_READ,
1895 adapter->pool.erp_req);
1898 retval = PTR_ERR(req);
1902 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1903 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1905 req->qtcb->header.port_handle = erp_action->port->handle;
1906 req->qtcb->bottom.support.fcp_lun = erp_action->unit->fcp_lun;
1907 req->handler = zfcp_fsf_open_unit_handler;
1908 req->data = erp_action->unit;
1909 req->erp_action = erp_action;
1910 erp_action->fsf_req_id = req->req_id;
1912 if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE))
1913 req->qtcb->bottom.support.option = FSF_OPEN_LUN_SUPPRESS_BOXING;
1915 zfcp_fsf_start_erp_timer(req);
1916 retval = zfcp_fsf_req_send(req);
1918 zfcp_fsf_req_free(req);
1919 erp_action->fsf_req_id = 0;
1922 spin_unlock_bh(&qdio->req_q_lock);
1926 static void zfcp_fsf_close_unit_handler(struct zfcp_fsf_req *req)
1928 struct zfcp_unit *unit = req->data;
1930 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1933 switch (req->qtcb->header.fsf_status) {
1934 case FSF_PORT_HANDLE_NOT_VALID:
1935 zfcp_erp_adapter_reopen(unit->port->adapter, 0, "fscuh_1", req);
1936 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1938 case FSF_LUN_HANDLE_NOT_VALID:
1939 zfcp_erp_port_reopen(unit->port, 0, "fscuh_2", req);
1940 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1942 case FSF_PORT_BOXED:
1943 zfcp_erp_port_boxed(unit->port, "fscuh_3", req);
1944 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1946 case FSF_ADAPTER_STATUS_AVAILABLE:
1947 switch (req->qtcb->header.fsf_status_qual.word[0]) {
1948 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1949 zfcp_fc_test_link(unit->port);
1951 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1952 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1957 atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status);
1963 * zfcp_fsf_close_unit - close zfcp unit
1964 * @erp_action: pointer to struct zfcp_unit
1965 * Returns: 0 on success, error otherwise
1967 int zfcp_fsf_close_unit(struct zfcp_erp_action *erp_action)
1969 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1970 struct zfcp_fsf_req *req;
1973 spin_lock_bh(&qdio->req_q_lock);
1974 if (zfcp_qdio_sbal_get(qdio))
1977 req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_LUN,
1978 SBAL_FLAGS0_TYPE_READ,
1979 qdio->adapter->pool.erp_req);
1982 retval = PTR_ERR(req);
1986 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1987 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1989 req->qtcb->header.port_handle = erp_action->port->handle;
1990 req->qtcb->header.lun_handle = erp_action->unit->handle;
1991 req->handler = zfcp_fsf_close_unit_handler;
1992 req->data = erp_action->unit;
1993 req->erp_action = erp_action;
1994 erp_action->fsf_req_id = req->req_id;
1996 zfcp_fsf_start_erp_timer(req);
1997 retval = zfcp_fsf_req_send(req);
1999 zfcp_fsf_req_free(req);
2000 erp_action->fsf_req_id = 0;
2003 spin_unlock_bh(&qdio->req_q_lock);
2007 static void zfcp_fsf_update_lat(struct fsf_latency_record *lat_rec, u32 lat)
2009 lat_rec->sum += lat;
2010 lat_rec->min = min(lat_rec->min, lat);
2011 lat_rec->max = max(lat_rec->max, lat);
2014 static void zfcp_fsf_req_trace(struct zfcp_fsf_req *req, struct scsi_cmnd *scsi)
2016 struct fsf_qual_latency_info *lat_in;
2017 struct latency_cont *lat = NULL;
2018 struct zfcp_unit *unit = req->unit;
2019 struct zfcp_blk_drv_data blktrc;
2020 int ticks = req->adapter->timer_ticks;
2022 lat_in = &req->qtcb->prefix.prot_status_qual.latency_info;
2025 blktrc.magic = ZFCP_BLK_DRV_DATA_MAGIC;
2026 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
2027 blktrc.flags |= ZFCP_BLK_REQ_ERROR;
2028 blktrc.inb_usage = req->qdio_req.qdio_inb_usage;
2029 blktrc.outb_usage = req->qdio_req.qdio_outb_usage;
2031 if (req->adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA &&
2032 !(req->status & ZFCP_STATUS_FSFREQ_ERROR)) {
2033 blktrc.flags |= ZFCP_BLK_LAT_VALID;
2034 blktrc.channel_lat = lat_in->channel_lat * ticks;
2035 blktrc.fabric_lat = lat_in->fabric_lat * ticks;
2037 switch (req->qtcb->bottom.io.data_direction) {
2038 case FSF_DATADIR_READ:
2039 lat = &unit->latencies.read;
2041 case FSF_DATADIR_WRITE:
2042 lat = &unit->latencies.write;
2044 case FSF_DATADIR_CMND:
2045 lat = &unit->latencies.cmd;
2050 spin_lock(&unit->latencies.lock);
2051 zfcp_fsf_update_lat(&lat->channel, lat_in->channel_lat);
2052 zfcp_fsf_update_lat(&lat->fabric, lat_in->fabric_lat);
2054 spin_unlock(&unit->latencies.lock);
2058 blk_add_driver_data(scsi->request->q, scsi->request, &blktrc,
2062 static void zfcp_fsf_send_fcp_command_task_handler(struct zfcp_fsf_req *req)
2064 struct scsi_cmnd *scpnt;
2065 struct fcp_resp_with_ext *fcp_rsp;
2066 unsigned long flags;
2068 read_lock_irqsave(&req->adapter->abort_lock, flags);
2071 if (unlikely(!scpnt)) {
2072 read_unlock_irqrestore(&req->adapter->abort_lock, flags);
2076 if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) {
2077 set_host_byte(scpnt, DID_TRANSPORT_DISRUPTED);
2078 goto skip_fsfstatus;
2081 fcp_rsp = (struct fcp_resp_with_ext *) &req->qtcb->bottom.io.fcp_rsp;
2082 zfcp_fc_eval_fcp_rsp(fcp_rsp, scpnt);
2085 zfcp_fsf_req_trace(req, scpnt);
2086 zfcp_dbf_scsi_result(req->adapter->dbf, scpnt, req);
2088 scpnt->host_scribble = NULL;
2089 (scpnt->scsi_done) (scpnt);
2091 * We must hold this lock until scsi_done has been called.
2092 * Otherwise we may call scsi_done after abort regarding this
2093 * command has completed.
2094 * Note: scsi_done must not block!
2096 read_unlock_irqrestore(&req->adapter->abort_lock, flags);
2099 static void zfcp_fsf_send_fcp_ctm_handler(struct zfcp_fsf_req *req)
2101 struct fcp_resp_with_ext *fcp_rsp;
2102 struct fcp_resp_rsp_info *rsp_info;
2104 fcp_rsp = (struct fcp_resp_with_ext *) &req->qtcb->bottom.io.fcp_rsp;
2105 rsp_info = (struct fcp_resp_rsp_info *) &fcp_rsp[1];
2107 if ((rsp_info->rsp_code != FCP_TMF_CMPL) ||
2108 (req->status & ZFCP_STATUS_FSFREQ_ERROR))
2109 req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED;
2113 static void zfcp_fsf_send_fcp_command_handler(struct zfcp_fsf_req *req)
2115 struct zfcp_unit *unit;
2116 struct fsf_qtcb_header *header = &req->qtcb->header;
2118 if (unlikely(req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT))
2123 if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR))
2124 goto skip_fsfstatus;
2126 switch (header->fsf_status) {
2127 case FSF_HANDLE_MISMATCH:
2128 case FSF_PORT_HANDLE_NOT_VALID:
2129 zfcp_erp_adapter_reopen(unit->port->adapter, 0, "fssfch1", req);
2130 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2132 case FSF_FCPLUN_NOT_VALID:
2133 case FSF_LUN_HANDLE_NOT_VALID:
2134 zfcp_erp_port_reopen(unit->port, 0, "fssfch2", req);
2135 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2137 case FSF_SERVICE_CLASS_NOT_SUPPORTED:
2138 zfcp_fsf_class_not_supp(req);
2140 case FSF_ACCESS_DENIED:
2141 zfcp_fsf_access_denied_unit(req, unit);
2143 case FSF_DIRECTION_INDICATOR_NOT_VALID:
2144 dev_err(&req->adapter->ccw_device->dev,
2145 "Incorrect direction %d, unit 0x%016Lx on port "
2146 "0x%016Lx closed\n",
2147 req->qtcb->bottom.io.data_direction,
2148 (unsigned long long)unit->fcp_lun,
2149 (unsigned long long)unit->port->wwpn);
2150 zfcp_erp_adapter_shutdown(unit->port->adapter, 0, "fssfch3",
2152 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2154 case FSF_CMND_LENGTH_NOT_VALID:
2155 dev_err(&req->adapter->ccw_device->dev,
2156 "Incorrect CDB length %d, unit 0x%016Lx on "
2157 "port 0x%016Lx closed\n",
2158 req->qtcb->bottom.io.fcp_cmnd_length,
2159 (unsigned long long)unit->fcp_lun,
2160 (unsigned long long)unit->port->wwpn);
2161 zfcp_erp_adapter_shutdown(unit->port->adapter, 0, "fssfch4",
2163 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2165 case FSF_PORT_BOXED:
2166 zfcp_erp_port_boxed(unit->port, "fssfch5", req);
2167 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2170 zfcp_erp_unit_boxed(unit, "fssfch6", req);
2171 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2173 case FSF_ADAPTER_STATUS_AVAILABLE:
2174 if (header->fsf_status_qual.word[0] ==
2175 FSF_SQ_INVOKE_LINK_TEST_PROCEDURE)
2176 zfcp_fc_test_link(unit->port);
2177 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2181 if (req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT)
2182 zfcp_fsf_send_fcp_ctm_handler(req);
2184 zfcp_fsf_send_fcp_command_task_handler(req);
2186 put_device(&unit->dev);
2191 * zfcp_fsf_send_fcp_command_task - initiate an FCP command (for a SCSI command)
2192 * @unit: unit where command is sent to
2193 * @scsi_cmnd: scsi command to be sent
2195 int zfcp_fsf_send_fcp_command_task(struct zfcp_unit *unit,
2196 struct scsi_cmnd *scsi_cmnd)
2198 struct zfcp_fsf_req *req;
2199 struct fcp_cmnd *fcp_cmnd;
2200 unsigned int sbtype = SBAL_FLAGS0_TYPE_READ;
2201 int real_bytes, retval = -EIO;
2202 struct zfcp_adapter *adapter = unit->port->adapter;
2203 struct zfcp_qdio *qdio = adapter->qdio;
2205 if (unlikely(!(atomic_read(&unit->status) &
2206 ZFCP_STATUS_COMMON_UNBLOCKED)))
2209 spin_lock(&qdio->req_q_lock);
2210 if (atomic_read(&qdio->req_q.count) <= 0) {
2211 atomic_inc(&qdio->req_q_full);
2215 if (scsi_cmnd->sc_data_direction == DMA_TO_DEVICE)
2216 sbtype = SBAL_FLAGS0_TYPE_WRITE;
2218 req = zfcp_fsf_req_create(qdio, FSF_QTCB_FCP_CMND,
2219 sbtype, adapter->pool.scsi_req);
2222 retval = PTR_ERR(req);
2226 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
2228 req->data = scsi_cmnd;
2229 req->handler = zfcp_fsf_send_fcp_command_handler;
2230 req->qtcb->header.lun_handle = unit->handle;
2231 req->qtcb->header.port_handle = unit->port->handle;
2232 req->qtcb->bottom.io.service_class = FSF_CLASS_3;
2233 req->qtcb->bottom.io.fcp_cmnd_length = FCP_CMND_LEN;
2235 scsi_cmnd->host_scribble = (unsigned char *) req->req_id;
2238 * set depending on data direction:
2239 * data direction bits in SBALE (SB Type)
2240 * data direction bits in QTCB
2242 switch (scsi_cmnd->sc_data_direction) {
2244 req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND;
2246 case DMA_FROM_DEVICE:
2247 req->qtcb->bottom.io.data_direction = FSF_DATADIR_READ;
2250 req->qtcb->bottom.io.data_direction = FSF_DATADIR_WRITE;
2252 case DMA_BIDIRECTIONAL:
2253 goto failed_scsi_cmnd;
2256 get_device(&unit->dev);
2258 fcp_cmnd = (struct fcp_cmnd *) &req->qtcb->bottom.io.fcp_cmnd;
2259 zfcp_fc_scsi_to_fcp(fcp_cmnd, scsi_cmnd);
2261 real_bytes = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req,
2262 scsi_sglist(scsi_cmnd),
2263 ZFCP_FSF_MAX_SBALS_PER_REQ);
2264 if (unlikely(real_bytes < 0)) {
2265 if (req->qdio_req.sbal_number >= ZFCP_FSF_MAX_SBALS_PER_REQ) {
2266 dev_err(&adapter->ccw_device->dev,
2267 "Oversize data package, unit 0x%016Lx "
2268 "on port 0x%016Lx closed\n",
2269 (unsigned long long)unit->fcp_lun,
2270 (unsigned long long)unit->port->wwpn);
2271 zfcp_erp_unit_shutdown(unit, 0, "fssfct1", req);
2274 goto failed_scsi_cmnd;
2277 retval = zfcp_fsf_req_send(req);
2278 if (unlikely(retval))
2279 goto failed_scsi_cmnd;
2284 put_device(&unit->dev);
2285 zfcp_fsf_req_free(req);
2286 scsi_cmnd->host_scribble = NULL;
2288 spin_unlock(&qdio->req_q_lock);
2293 * zfcp_fsf_send_fcp_ctm - send SCSI task management command
2294 * @unit: pointer to struct zfcp_unit
2295 * @tm_flags: unsigned byte for task management flags
2296 * Returns: on success pointer to struct fsf_req, NULL otherwise
2298 struct zfcp_fsf_req *zfcp_fsf_send_fcp_ctm(struct zfcp_unit *unit, u8 tm_flags)
2300 struct zfcp_fsf_req *req = NULL;
2301 struct fcp_cmnd *fcp_cmnd;
2302 struct zfcp_qdio *qdio = unit->port->adapter->qdio;
2304 if (unlikely(!(atomic_read(&unit->status) &
2305 ZFCP_STATUS_COMMON_UNBLOCKED)))
2308 spin_lock_bh(&qdio->req_q_lock);
2309 if (zfcp_qdio_sbal_get(qdio))
2312 req = zfcp_fsf_req_create(qdio, FSF_QTCB_FCP_CMND,
2313 SBAL_FLAGS0_TYPE_WRITE,
2314 qdio->adapter->pool.scsi_req);
2321 req->status |= ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT;
2323 req->handler = zfcp_fsf_send_fcp_command_handler;
2324 req->qtcb->header.lun_handle = unit->handle;
2325 req->qtcb->header.port_handle = unit->port->handle;
2326 req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND;
2327 req->qtcb->bottom.io.service_class = FSF_CLASS_3;
2328 req->qtcb->bottom.io.fcp_cmnd_length = FCP_CMND_LEN;
2330 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
2332 fcp_cmnd = (struct fcp_cmnd *) &req->qtcb->bottom.io.fcp_cmnd;
2333 zfcp_fc_fcp_tm(fcp_cmnd, unit->device, tm_flags);
2335 zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT);
2336 if (!zfcp_fsf_req_send(req))
2339 zfcp_fsf_req_free(req);
2342 spin_unlock_bh(&qdio->req_q_lock);
2346 static void zfcp_fsf_control_file_handler(struct zfcp_fsf_req *req)
2351 * zfcp_fsf_control_file - control file upload/download
2352 * @adapter: pointer to struct zfcp_adapter
2353 * @fsf_cfdc: pointer to struct zfcp_fsf_cfdc
2354 * Returns: on success pointer to struct zfcp_fsf_req, NULL otherwise
2356 struct zfcp_fsf_req *zfcp_fsf_control_file(struct zfcp_adapter *adapter,
2357 struct zfcp_fsf_cfdc *fsf_cfdc)
2359 struct zfcp_qdio *qdio = adapter->qdio;
2360 struct zfcp_fsf_req *req = NULL;
2361 struct fsf_qtcb_bottom_support *bottom;
2362 int direction, retval = -EIO, bytes;
2364 if (!(adapter->adapter_features & FSF_FEATURE_CFDC))
2365 return ERR_PTR(-EOPNOTSUPP);
2367 switch (fsf_cfdc->command) {
2368 case FSF_QTCB_DOWNLOAD_CONTROL_FILE:
2369 direction = SBAL_FLAGS0_TYPE_WRITE;
2371 case FSF_QTCB_UPLOAD_CONTROL_FILE:
2372 direction = SBAL_FLAGS0_TYPE_READ;
2375 return ERR_PTR(-EINVAL);
2378 spin_lock_bh(&qdio->req_q_lock);
2379 if (zfcp_qdio_sbal_get(qdio))
2382 req = zfcp_fsf_req_create(qdio, fsf_cfdc->command, direction, NULL);
2388 req->handler = zfcp_fsf_control_file_handler;
2390 bottom = &req->qtcb->bottom.support;
2391 bottom->operation_subtype = FSF_CFDC_OPERATION_SUBTYPE;
2392 bottom->option = fsf_cfdc->option;
2394 bytes = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req,
2396 ZFCP_FSF_MAX_SBALS_PER_REQ);
2397 if (bytes != ZFCP_CFDC_MAX_SIZE) {
2398 zfcp_fsf_req_free(req);
2402 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
2403 retval = zfcp_fsf_req_send(req);
2405 spin_unlock_bh(&qdio->req_q_lock);
2408 wait_for_completion(&req->completion);
2411 return ERR_PTR(retval);
2415 * zfcp_fsf_reqid_check - validate req_id contained in SBAL returned by QDIO
2416 * @adapter: pointer to struct zfcp_adapter
2417 * @sbal_idx: response queue index of SBAL to be processed
2419 void zfcp_fsf_reqid_check(struct zfcp_qdio *qdio, int sbal_idx)
2421 struct zfcp_adapter *adapter = qdio->adapter;
2422 struct qdio_buffer *sbal = qdio->resp_q.sbal[sbal_idx];
2423 struct qdio_buffer_element *sbale;
2424 struct zfcp_fsf_req *fsf_req;
2425 unsigned long req_id;
2428 for (idx = 0; idx < QDIO_MAX_ELEMENTS_PER_BUFFER; idx++) {
2430 sbale = &sbal->element[idx];
2431 req_id = (unsigned long) sbale->addr;
2432 fsf_req = zfcp_reqlist_find_rm(adapter->req_list, req_id);
2436 * Unknown request means that we have potentially memory
2437 * corruption and must stop the machine immediately.
2439 panic("error: unknown req_id (%lx) on adapter %s.\n",
2440 req_id, dev_name(&adapter->ccw_device->dev));
2442 fsf_req->qdio_req.sbal_response = sbal_idx;
2443 fsf_req->qdio_req.qdio_inb_usage =
2444 atomic_read(&qdio->resp_q.count);
2445 zfcp_fsf_req_complete(fsf_req);
2447 if (likely(sbale->flags & SBAL_FLAGS_LAST_ENTRY))