4 * Implementation of FSF commands.
6 * Copyright IBM Corp. 2002, 2015
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 struct kmem_cache *zfcp_fsf_qtcb_cache;
23 static void zfcp_fsf_request_timeout_handler(unsigned long data)
25 struct zfcp_adapter *adapter = (struct zfcp_adapter *) data;
26 zfcp_qdio_siosl(adapter);
27 zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED,
31 static void zfcp_fsf_start_timer(struct zfcp_fsf_req *fsf_req,
32 unsigned long timeout)
34 fsf_req->timer.function = zfcp_fsf_request_timeout_handler;
35 fsf_req->timer.data = (unsigned long) fsf_req->adapter;
36 fsf_req->timer.expires = jiffies + timeout;
37 add_timer(&fsf_req->timer);
40 static void zfcp_fsf_start_erp_timer(struct zfcp_fsf_req *fsf_req)
42 BUG_ON(!fsf_req->erp_action);
43 fsf_req->timer.function = zfcp_erp_timeout_handler;
44 fsf_req->timer.data = (unsigned long) fsf_req->erp_action;
45 fsf_req->timer.expires = jiffies + 30 * HZ;
46 add_timer(&fsf_req->timer);
49 /* association between FSF command and FSF QTCB type */
50 static u32 fsf_qtcb_type[] = {
51 [FSF_QTCB_FCP_CMND] = FSF_IO_COMMAND,
52 [FSF_QTCB_ABORT_FCP_CMND] = FSF_SUPPORT_COMMAND,
53 [FSF_QTCB_OPEN_PORT_WITH_DID] = FSF_SUPPORT_COMMAND,
54 [FSF_QTCB_OPEN_LUN] = FSF_SUPPORT_COMMAND,
55 [FSF_QTCB_CLOSE_LUN] = FSF_SUPPORT_COMMAND,
56 [FSF_QTCB_CLOSE_PORT] = FSF_SUPPORT_COMMAND,
57 [FSF_QTCB_CLOSE_PHYSICAL_PORT] = FSF_SUPPORT_COMMAND,
58 [FSF_QTCB_SEND_ELS] = FSF_SUPPORT_COMMAND,
59 [FSF_QTCB_SEND_GENERIC] = FSF_SUPPORT_COMMAND,
60 [FSF_QTCB_EXCHANGE_CONFIG_DATA] = FSF_CONFIG_COMMAND,
61 [FSF_QTCB_EXCHANGE_PORT_DATA] = FSF_PORT_COMMAND,
62 [FSF_QTCB_DOWNLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND,
63 [FSF_QTCB_UPLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND
66 static void zfcp_fsf_class_not_supp(struct zfcp_fsf_req *req)
68 dev_err(&req->adapter->ccw_device->dev, "FCP device not "
69 "operational because of an unsupported FC class\n");
70 zfcp_erp_adapter_shutdown(req->adapter, 0, "fscns_1");
71 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
75 * zfcp_fsf_req_free - free memory used by fsf request
76 * @fsf_req: pointer to struct zfcp_fsf_req
78 void zfcp_fsf_req_free(struct zfcp_fsf_req *req)
80 if (likely(req->pool)) {
81 if (likely(req->qtcb))
82 mempool_free(req->qtcb, req->adapter->pool.qtcb_pool);
83 mempool_free(req, req->pool);
87 if (likely(req->qtcb))
88 kmem_cache_free(zfcp_fsf_qtcb_cache, req->qtcb);
92 static void zfcp_fsf_status_read_port_closed(struct zfcp_fsf_req *req)
95 struct fsf_status_read_buffer *sr_buf = req->data;
96 struct zfcp_adapter *adapter = req->adapter;
97 struct zfcp_port *port;
98 int d_id = ntoh24(sr_buf->d_id);
100 read_lock_irqsave(&adapter->port_list_lock, flags);
101 list_for_each_entry(port, &adapter->port_list, list)
102 if (port->d_id == d_id) {
103 zfcp_erp_port_reopen(port, 0, "fssrpc1");
106 read_unlock_irqrestore(&adapter->port_list_lock, flags);
109 static void zfcp_fsf_link_down_info_eval(struct zfcp_fsf_req *req,
110 struct fsf_link_down_info *link_down)
112 struct zfcp_adapter *adapter = req->adapter;
114 if (atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED)
117 atomic_set_mask(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED, &adapter->status);
119 zfcp_scsi_schedule_rports_block(adapter);
124 switch (link_down->error_code) {
125 case FSF_PSQ_LINK_NO_LIGHT:
126 dev_warn(&req->adapter->ccw_device->dev,
127 "There is no light signal from the local "
128 "fibre channel cable\n");
130 case FSF_PSQ_LINK_WRAP_PLUG:
131 dev_warn(&req->adapter->ccw_device->dev,
132 "There is a wrap plug instead of a fibre "
135 case FSF_PSQ_LINK_NO_FCP:
136 dev_warn(&req->adapter->ccw_device->dev,
137 "The adjacent fibre channel node does not "
140 case FSF_PSQ_LINK_FIRMWARE_UPDATE:
141 dev_warn(&req->adapter->ccw_device->dev,
142 "The FCP device is suspended because of a "
143 "firmware update\n");
145 case FSF_PSQ_LINK_INVALID_WWPN:
146 dev_warn(&req->adapter->ccw_device->dev,
147 "The FCP device detected a WWPN that is "
148 "duplicate or not valid\n");
150 case FSF_PSQ_LINK_NO_NPIV_SUPPORT:
151 dev_warn(&req->adapter->ccw_device->dev,
152 "The fibre channel fabric does not support NPIV\n");
154 case FSF_PSQ_LINK_NO_FCP_RESOURCES:
155 dev_warn(&req->adapter->ccw_device->dev,
156 "The FCP adapter cannot support more NPIV ports\n");
158 case FSF_PSQ_LINK_NO_FABRIC_RESOURCES:
159 dev_warn(&req->adapter->ccw_device->dev,
160 "The adjacent switch cannot support "
161 "more NPIV ports\n");
163 case FSF_PSQ_LINK_FABRIC_LOGIN_UNABLE:
164 dev_warn(&req->adapter->ccw_device->dev,
165 "The FCP adapter could not log in to the "
166 "fibre channel fabric\n");
168 case FSF_PSQ_LINK_WWPN_ASSIGNMENT_CORRUPTED:
169 dev_warn(&req->adapter->ccw_device->dev,
170 "The WWPN assignment file on the FCP adapter "
171 "has been damaged\n");
173 case FSF_PSQ_LINK_MODE_TABLE_CURRUPTED:
174 dev_warn(&req->adapter->ccw_device->dev,
175 "The mode table on the FCP adapter "
176 "has been damaged\n");
178 case FSF_PSQ_LINK_NO_WWPN_ASSIGNMENT:
179 dev_warn(&req->adapter->ccw_device->dev,
180 "All NPIV ports on the FCP adapter have "
184 dev_warn(&req->adapter->ccw_device->dev,
185 "The link between the FCP adapter and "
186 "the FC fabric is down\n");
189 zfcp_erp_set_adapter_status(adapter, ZFCP_STATUS_COMMON_ERP_FAILED);
192 static void zfcp_fsf_status_read_link_down(struct zfcp_fsf_req *req)
194 struct fsf_status_read_buffer *sr_buf = req->data;
195 struct fsf_link_down_info *ldi =
196 (struct fsf_link_down_info *) &sr_buf->payload;
198 switch (sr_buf->status_subtype) {
199 case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK:
200 zfcp_fsf_link_down_info_eval(req, ldi);
202 case FSF_STATUS_READ_SUB_FDISC_FAILED:
203 zfcp_fsf_link_down_info_eval(req, ldi);
205 case FSF_STATUS_READ_SUB_FIRMWARE_UPDATE:
206 zfcp_fsf_link_down_info_eval(req, NULL);
210 static void zfcp_fsf_status_read_handler(struct zfcp_fsf_req *req)
212 struct zfcp_adapter *adapter = req->adapter;
213 struct fsf_status_read_buffer *sr_buf = req->data;
215 if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) {
216 zfcp_dbf_hba_fsf_uss("fssrh_1", req);
217 mempool_free(virt_to_page(sr_buf), adapter->pool.sr_data);
218 zfcp_fsf_req_free(req);
222 zfcp_dbf_hba_fsf_uss("fssrh_4", req);
224 switch (sr_buf->status_type) {
225 case FSF_STATUS_READ_PORT_CLOSED:
226 zfcp_fsf_status_read_port_closed(req);
228 case FSF_STATUS_READ_INCOMING_ELS:
229 zfcp_fc_incoming_els(req);
231 case FSF_STATUS_READ_SENSE_DATA_AVAIL:
233 case FSF_STATUS_READ_BIT_ERROR_THRESHOLD:
234 dev_warn(&adapter->ccw_device->dev,
235 "The error threshold for checksum statistics "
236 "has been exceeded\n");
237 zfcp_dbf_hba_bit_err("fssrh_3", req);
239 case FSF_STATUS_READ_LINK_DOWN:
240 zfcp_fsf_status_read_link_down(req);
241 zfcp_fc_enqueue_event(adapter, FCH_EVT_LINKDOWN, 0);
243 case FSF_STATUS_READ_LINK_UP:
244 dev_info(&adapter->ccw_device->dev,
245 "The local link has been restored\n");
246 /* All ports should be marked as ready to run again */
247 zfcp_erp_set_adapter_status(adapter,
248 ZFCP_STATUS_COMMON_RUNNING);
249 zfcp_erp_adapter_reopen(adapter,
250 ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED |
251 ZFCP_STATUS_COMMON_ERP_FAILED,
253 zfcp_fc_enqueue_event(adapter, FCH_EVT_LINKUP, 0);
256 case FSF_STATUS_READ_NOTIFICATION_LOST:
257 if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_ACT_UPDATED)
258 zfcp_cfdc_adapter_access_changed(adapter);
259 if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_INCOMING_ELS)
260 queue_work(adapter->work_queue, &adapter->scan_work);
262 case FSF_STATUS_READ_CFDC_UPDATED:
263 zfcp_cfdc_adapter_access_changed(adapter);
265 case FSF_STATUS_READ_FEATURE_UPDATE_ALERT:
266 adapter->adapter_features = sr_buf->payload.word[0];
270 mempool_free(virt_to_page(sr_buf), adapter->pool.sr_data);
271 zfcp_fsf_req_free(req);
273 atomic_inc(&adapter->stat_miss);
274 queue_work(adapter->work_queue, &adapter->stat_work);
277 static void zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req *req)
279 switch (req->qtcb->header.fsf_status_qual.word[0]) {
280 case FSF_SQ_FCP_RSP_AVAILABLE:
281 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
282 case FSF_SQ_NO_RETRY_POSSIBLE:
283 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
285 case FSF_SQ_COMMAND_ABORTED:
287 case FSF_SQ_NO_RECOM:
288 dev_err(&req->adapter->ccw_device->dev,
289 "The FCP adapter reported a problem "
290 "that cannot be recovered\n");
291 zfcp_qdio_siosl(req->adapter);
292 zfcp_erp_adapter_shutdown(req->adapter, 0, "fsfsqe1");
295 /* all non-return stats set FSFREQ_ERROR*/
296 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
299 static void zfcp_fsf_fsfstatus_eval(struct zfcp_fsf_req *req)
301 if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR))
304 switch (req->qtcb->header.fsf_status) {
305 case FSF_UNKNOWN_COMMAND:
306 dev_err(&req->adapter->ccw_device->dev,
307 "The FCP adapter does not recognize the command 0x%x\n",
308 req->qtcb->header.fsf_command);
309 zfcp_erp_adapter_shutdown(req->adapter, 0, "fsfse_1");
310 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
312 case FSF_ADAPTER_STATUS_AVAILABLE:
313 zfcp_fsf_fsfstatus_qual_eval(req);
318 static void zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *req)
320 struct zfcp_adapter *adapter = req->adapter;
321 struct fsf_qtcb *qtcb = req->qtcb;
322 union fsf_prot_status_qual *psq = &qtcb->prefix.prot_status_qual;
324 zfcp_dbf_hba_fsf_response(req);
326 if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) {
327 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
331 switch (qtcb->prefix.prot_status) {
333 case FSF_PROT_FSF_STATUS_PRESENTED:
335 case FSF_PROT_QTCB_VERSION_ERROR:
336 dev_err(&adapter->ccw_device->dev,
337 "QTCB version 0x%x not supported by FCP adapter "
338 "(0x%x to 0x%x)\n", FSF_QTCB_CURRENT_VERSION,
339 psq->word[0], psq->word[1]);
340 zfcp_erp_adapter_shutdown(adapter, 0, "fspse_1");
342 case FSF_PROT_ERROR_STATE:
343 case FSF_PROT_SEQ_NUMB_ERROR:
344 zfcp_erp_adapter_reopen(adapter, 0, "fspse_2");
345 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
347 case FSF_PROT_UNSUPP_QTCB_TYPE:
348 dev_err(&adapter->ccw_device->dev,
349 "The QTCB type is not supported by the FCP adapter\n");
350 zfcp_erp_adapter_shutdown(adapter, 0, "fspse_3");
352 case FSF_PROT_HOST_CONNECTION_INITIALIZING:
353 atomic_set_mask(ZFCP_STATUS_ADAPTER_HOST_CON_INIT,
356 case FSF_PROT_DUPLICATE_REQUEST_ID:
357 dev_err(&adapter->ccw_device->dev,
358 "0x%Lx is an ambiguous request identifier\n",
359 (unsigned long long)qtcb->bottom.support.req_handle);
360 zfcp_erp_adapter_shutdown(adapter, 0, "fspse_4");
362 case FSF_PROT_LINK_DOWN:
363 zfcp_fsf_link_down_info_eval(req, &psq->link_down_info);
364 /* go through reopen to flush pending requests */
365 zfcp_erp_adapter_reopen(adapter, 0, "fspse_6");
367 case FSF_PROT_REEST_QUEUE:
368 /* All ports should be marked as ready to run again */
369 zfcp_erp_set_adapter_status(adapter,
370 ZFCP_STATUS_COMMON_RUNNING);
371 zfcp_erp_adapter_reopen(adapter,
372 ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED |
373 ZFCP_STATUS_COMMON_ERP_FAILED,
377 dev_err(&adapter->ccw_device->dev,
378 "0x%x is not a valid transfer protocol status\n",
379 qtcb->prefix.prot_status);
380 zfcp_qdio_siosl(adapter);
381 zfcp_erp_adapter_shutdown(adapter, 0, "fspse_9");
383 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
387 * zfcp_fsf_req_complete - process completion of a FSF request
388 * @fsf_req: The FSF request that has been completed.
390 * When a request has been completed either from the FCP adapter,
391 * or it has been dismissed due to a queue shutdown, this function
392 * is called to process the completion status and trigger further
393 * events related to the FSF request.
395 static void zfcp_fsf_req_complete(struct zfcp_fsf_req *req)
397 if (unlikely(req->fsf_command == FSF_QTCB_UNSOLICITED_STATUS)) {
398 zfcp_fsf_status_read_handler(req);
402 del_timer(&req->timer);
403 zfcp_fsf_protstatus_eval(req);
404 zfcp_fsf_fsfstatus_eval(req);
408 zfcp_erp_notify(req->erp_action, 0);
410 if (likely(req->status & ZFCP_STATUS_FSFREQ_CLEANUP))
411 zfcp_fsf_req_free(req);
413 complete(&req->completion);
417 * zfcp_fsf_req_dismiss_all - dismiss all fsf requests
418 * @adapter: pointer to struct zfcp_adapter
420 * Never ever call this without shutting down the adapter first.
421 * Otherwise the adapter would continue using and corrupting s390 storage.
422 * Included BUG_ON() call to ensure this is done.
423 * ERP is supposed to be the only user of this function.
425 void zfcp_fsf_req_dismiss_all(struct zfcp_adapter *adapter)
427 struct zfcp_fsf_req *req, *tmp;
428 LIST_HEAD(remove_queue);
430 BUG_ON(atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP);
431 zfcp_reqlist_move(adapter->req_list, &remove_queue);
433 list_for_each_entry_safe(req, tmp, &remove_queue, list) {
434 list_del(&req->list);
435 req->status |= ZFCP_STATUS_FSFREQ_DISMISSED;
436 zfcp_fsf_req_complete(req);
440 static int zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req *req)
442 struct fsf_qtcb_bottom_config *bottom = &req->qtcb->bottom.config;
443 struct zfcp_adapter *adapter = req->adapter;
444 struct Scsi_Host *shost = adapter->scsi_host;
445 struct fc_els_flogi *nsp, *plogi;
447 /* adjust pointers for missing command code */
448 nsp = (struct fc_els_flogi *) ((u8 *)&bottom->nport_serv_param
450 plogi = (struct fc_els_flogi *) ((u8 *)&bottom->plogi_payload
454 memcpy(req->data, bottom, sizeof(*bottom));
456 fc_host_port_name(shost) = nsp->fl_wwpn;
457 fc_host_node_name(shost) = nsp->fl_wwnn;
458 fc_host_supported_classes(shost) = FC_COS_CLASS2 | FC_COS_CLASS3;
460 adapter->timer_ticks = bottom->timer_interval & ZFCP_FSF_TIMER_INT_MASK;
461 adapter->stat_read_buf_num = max(bottom->status_read_buf_num,
462 (u16)FSF_STATUS_READS_RECOM);
464 if (fc_host_permanent_port_name(shost) == -1)
465 fc_host_permanent_port_name(shost) = fc_host_port_name(shost);
467 zfcp_scsi_set_prot(adapter);
469 /* no error return above here, otherwise must fix call chains */
470 /* do not evaluate invalid fields */
471 if (req->qtcb->header.fsf_status == FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE)
474 fc_host_port_id(shost) = ntoh24(bottom->s_id);
475 fc_host_speed(shost) = bottom->fc_link_speed;
477 adapter->hydra_version = bottom->adapter_type;
479 switch (bottom->fc_topology) {
481 adapter->peer_d_id = ntoh24(bottom->peer_d_id);
482 adapter->peer_wwpn = plogi->fl_wwpn;
483 adapter->peer_wwnn = plogi->fl_wwnn;
484 fc_host_port_type(shost) = FC_PORTTYPE_PTP;
486 case FSF_TOPO_FABRIC:
487 if (bottom->connection_features & FSF_FEATURE_NPIV_MODE)
488 fc_host_port_type(shost) = FC_PORTTYPE_NPIV;
490 fc_host_port_type(shost) = FC_PORTTYPE_NPORT;
493 fc_host_port_type(shost) = FC_PORTTYPE_NLPORT;
496 dev_err(&adapter->ccw_device->dev,
497 "Unknown or unsupported arbitrated loop "
498 "fibre channel topology detected\n");
499 zfcp_erp_adapter_shutdown(adapter, 0, "fsece_1");
506 static void zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *req)
508 struct zfcp_adapter *adapter = req->adapter;
509 struct fsf_qtcb *qtcb = req->qtcb;
510 struct fsf_qtcb_bottom_config *bottom = &qtcb->bottom.config;
511 struct Scsi_Host *shost = adapter->scsi_host;
513 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
516 adapter->fsf_lic_version = bottom->lic_version;
517 adapter->adapter_features = bottom->adapter_features;
518 adapter->connection_features = bottom->connection_features;
519 adapter->peer_wwpn = 0;
520 adapter->peer_wwnn = 0;
521 adapter->peer_d_id = 0;
523 switch (qtcb->header.fsf_status) {
525 if (zfcp_fsf_exchange_config_evaluate(req))
528 if (bottom->max_qtcb_size < sizeof(struct fsf_qtcb)) {
529 dev_err(&adapter->ccw_device->dev,
530 "FCP adapter maximum QTCB size (%d bytes) "
532 bottom->max_qtcb_size);
533 zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh1");
536 atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK,
539 case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE:
540 fc_host_node_name(shost) = 0;
541 fc_host_port_name(shost) = 0;
542 fc_host_port_id(shost) = 0;
543 fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN;
544 fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN;
545 adapter->hydra_version = 0;
547 /* avoids adapter shutdown to be able to recognize
548 * events such as LINK UP */
549 atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK,
551 zfcp_fsf_link_down_info_eval(req,
552 &qtcb->header.fsf_status_qual.link_down_info);
553 if (zfcp_fsf_exchange_config_evaluate(req))
557 zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh3");
561 if (adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT) {
562 adapter->hardware_version = bottom->hardware_version;
563 memcpy(fc_host_serial_number(shost), bottom->serial_number,
564 min(FC_SERIAL_NUMBER_SIZE, 17));
565 EBCASC(fc_host_serial_number(shost),
566 min(FC_SERIAL_NUMBER_SIZE, 17));
569 if (FSF_QTCB_CURRENT_VERSION < bottom->low_qtcb_version) {
570 dev_err(&adapter->ccw_device->dev,
571 "The FCP adapter only supports newer "
572 "control block versions\n");
573 zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh4");
576 if (FSF_QTCB_CURRENT_VERSION > bottom->high_qtcb_version) {
577 dev_err(&adapter->ccw_device->dev,
578 "The FCP adapter only supports older "
579 "control block versions\n");
580 zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh5");
584 static void zfcp_fsf_exchange_port_evaluate(struct zfcp_fsf_req *req)
586 struct zfcp_adapter *adapter = req->adapter;
587 struct fsf_qtcb_bottom_port *bottom = &req->qtcb->bottom.port;
588 struct Scsi_Host *shost = adapter->scsi_host;
591 memcpy(req->data, bottom, sizeof(*bottom));
593 if (adapter->connection_features & FSF_FEATURE_NPIV_MODE) {
594 fc_host_permanent_port_name(shost) = bottom->wwpn;
596 fc_host_permanent_port_name(shost) = fc_host_port_name(shost);
597 fc_host_maxframe_size(shost) = bottom->maximum_frame_size;
598 fc_host_supported_speeds(shost) = bottom->supported_speed;
599 memcpy(fc_host_supported_fc4s(shost), bottom->supported_fc4_types,
601 memcpy(fc_host_active_fc4s(shost), bottom->active_fc4_types,
605 static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *req)
607 struct fsf_qtcb *qtcb = req->qtcb;
609 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
612 switch (qtcb->header.fsf_status) {
614 zfcp_fsf_exchange_port_evaluate(req);
616 case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE:
617 zfcp_fsf_exchange_port_evaluate(req);
618 zfcp_fsf_link_down_info_eval(req,
619 &qtcb->header.fsf_status_qual.link_down_info);
624 static struct zfcp_fsf_req *zfcp_fsf_alloc(mempool_t *pool)
626 struct zfcp_fsf_req *req;
629 req = mempool_alloc(pool, GFP_ATOMIC);
631 req = kmalloc(sizeof(*req), GFP_ATOMIC);
636 memset(req, 0, sizeof(*req));
641 static struct fsf_qtcb *zfcp_qtcb_alloc(mempool_t *pool)
643 struct fsf_qtcb *qtcb;
646 qtcb = mempool_alloc(pool, GFP_ATOMIC);
648 qtcb = kmem_cache_alloc(zfcp_fsf_qtcb_cache, GFP_ATOMIC);
653 memset(qtcb, 0, sizeof(*qtcb));
657 static struct zfcp_fsf_req *zfcp_fsf_req_create(struct zfcp_qdio *qdio,
658 u32 fsf_cmd, u8 sbtype,
661 struct zfcp_adapter *adapter = qdio->adapter;
662 struct zfcp_fsf_req *req = zfcp_fsf_alloc(pool);
665 return ERR_PTR(-ENOMEM);
667 if (adapter->req_no == 0)
670 INIT_LIST_HEAD(&req->list);
671 init_timer(&req->timer);
672 init_completion(&req->completion);
674 req->adapter = adapter;
675 req->fsf_command = fsf_cmd;
676 req->req_id = adapter->req_no;
678 if (likely(fsf_cmd != FSF_QTCB_UNSOLICITED_STATUS)) {
680 req->qtcb = zfcp_qtcb_alloc(adapter->pool.qtcb_pool);
682 req->qtcb = zfcp_qtcb_alloc(NULL);
684 if (unlikely(!req->qtcb)) {
685 zfcp_fsf_req_free(req);
686 return ERR_PTR(-ENOMEM);
689 req->seq_no = adapter->fsf_req_seq_no;
690 req->qtcb->prefix.req_seq_no = adapter->fsf_req_seq_no;
691 req->qtcb->prefix.req_id = req->req_id;
692 req->qtcb->prefix.ulp_info = 26;
693 req->qtcb->prefix.qtcb_type = fsf_qtcb_type[req->fsf_command];
694 req->qtcb->prefix.qtcb_version = FSF_QTCB_CURRENT_VERSION;
695 req->qtcb->header.req_handle = req->req_id;
696 req->qtcb->header.fsf_command = req->fsf_command;
699 zfcp_qdio_req_init(adapter->qdio, &req->qdio_req, req->req_id, sbtype,
700 req->qtcb, sizeof(struct fsf_qtcb));
705 static int zfcp_fsf_req_send(struct zfcp_fsf_req *req)
707 struct zfcp_adapter *adapter = req->adapter;
708 struct zfcp_qdio *qdio = adapter->qdio;
709 int with_qtcb = (req->qtcb != NULL);
710 int req_id = req->req_id;
712 zfcp_reqlist_add(adapter->req_list, req);
714 req->qdio_req.qdio_outb_usage = atomic_read(&qdio->req_q_free);
715 req->issued = get_clock();
716 if (zfcp_qdio_send(qdio, &req->qdio_req)) {
717 del_timer(&req->timer);
718 /* lookup request again, list might have changed */
719 zfcp_reqlist_find_rm(adapter->req_list, req_id);
720 zfcp_erp_adapter_reopen(adapter, 0, "fsrs__1");
724 /* Don't increase for unsolicited status */
726 adapter->fsf_req_seq_no++;
733 * zfcp_fsf_status_read - send status read request
734 * @adapter: pointer to struct zfcp_adapter
735 * @req_flags: request flags
736 * Returns: 0 on success, ERROR otherwise
738 int zfcp_fsf_status_read(struct zfcp_qdio *qdio)
740 struct zfcp_adapter *adapter = qdio->adapter;
741 struct zfcp_fsf_req *req;
742 struct fsf_status_read_buffer *sr_buf;
746 spin_lock_irq(&qdio->req_q_lock);
747 if (zfcp_qdio_sbal_get(qdio))
750 req = zfcp_fsf_req_create(qdio, FSF_QTCB_UNSOLICITED_STATUS, 0,
751 adapter->pool.status_read_req);
753 retval = PTR_ERR(req);
757 page = mempool_alloc(adapter->pool.sr_data, GFP_ATOMIC);
762 sr_buf = page_address(page);
763 memset(sr_buf, 0, sizeof(*sr_buf));
766 zfcp_qdio_fill_next(qdio, &req->qdio_req, sr_buf, sizeof(*sr_buf));
767 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
769 retval = zfcp_fsf_req_send(req);
771 goto failed_req_send;
777 mempool_free(virt_to_page(sr_buf), adapter->pool.sr_data);
779 zfcp_dbf_hba_fsf_uss("fssr__1", req);
780 zfcp_fsf_req_free(req);
782 spin_unlock_irq(&qdio->req_q_lock);
786 static void zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req *req)
788 struct scsi_device *sdev = req->data;
789 struct zfcp_scsi_dev *zfcp_sdev;
790 union fsf_status_qual *fsq = &req->qtcb->header.fsf_status_qual;
792 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
795 zfcp_sdev = sdev_to_zfcp(sdev);
797 switch (req->qtcb->header.fsf_status) {
798 case FSF_PORT_HANDLE_NOT_VALID:
799 if (fsq->word[0] == fsq->word[1]) {
800 zfcp_erp_adapter_reopen(zfcp_sdev->port->adapter, 0,
802 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
805 case FSF_LUN_HANDLE_NOT_VALID:
806 if (fsq->word[0] == fsq->word[1]) {
807 zfcp_erp_port_reopen(zfcp_sdev->port, 0, "fsafch2");
808 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
811 case FSF_FCP_COMMAND_DOES_NOT_EXIST:
812 req->status |= ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED;
815 zfcp_erp_set_port_status(zfcp_sdev->port,
816 ZFCP_STATUS_COMMON_ACCESS_BOXED);
817 zfcp_erp_port_reopen(zfcp_sdev->port,
818 ZFCP_STATUS_COMMON_ERP_FAILED, "fsafch3");
819 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
822 zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_ACCESS_BOXED);
823 zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED,
825 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
827 case FSF_ADAPTER_STATUS_AVAILABLE:
828 switch (fsq->word[0]) {
829 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
830 zfcp_fc_test_link(zfcp_sdev->port);
832 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
833 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
838 req->status |= ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED;
844 * zfcp_fsf_abort_fcp_cmnd - abort running SCSI command
845 * @scmnd: The SCSI command to abort
846 * Returns: pointer to struct zfcp_fsf_req
849 struct zfcp_fsf_req *zfcp_fsf_abort_fcp_cmnd(struct scsi_cmnd *scmnd)
851 struct zfcp_fsf_req *req = NULL;
852 struct scsi_device *sdev = scmnd->device;
853 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
854 struct zfcp_qdio *qdio = zfcp_sdev->port->adapter->qdio;
855 unsigned long old_req_id = (unsigned long) scmnd->host_scribble;
857 spin_lock_irq(&qdio->req_q_lock);
858 if (zfcp_qdio_sbal_get(qdio))
860 req = zfcp_fsf_req_create(qdio, FSF_QTCB_ABORT_FCP_CMND,
861 SBAL_SFLAGS0_TYPE_READ,
862 qdio->adapter->pool.scsi_abort);
868 if (unlikely(!(atomic_read(&zfcp_sdev->status) &
869 ZFCP_STATUS_COMMON_UNBLOCKED)))
872 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
875 req->handler = zfcp_fsf_abort_fcp_command_handler;
876 req->qtcb->header.lun_handle = zfcp_sdev->lun_handle;
877 req->qtcb->header.port_handle = zfcp_sdev->port->handle;
878 req->qtcb->bottom.support.req_handle = (u64) old_req_id;
880 zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT);
881 if (!zfcp_fsf_req_send(req))
885 zfcp_fsf_req_free(req);
888 spin_unlock_irq(&qdio->req_q_lock);
892 static void zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *req)
894 struct zfcp_adapter *adapter = req->adapter;
895 struct zfcp_fsf_ct_els *ct = req->data;
896 struct fsf_qtcb_header *header = &req->qtcb->header;
898 ct->status = -EINVAL;
900 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
903 switch (header->fsf_status) {
905 zfcp_dbf_san_res("fsscth2", req);
908 case FSF_SERVICE_CLASS_NOT_SUPPORTED:
909 zfcp_fsf_class_not_supp(req);
911 case FSF_ADAPTER_STATUS_AVAILABLE:
912 switch (header->fsf_status_qual.word[0]){
913 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
914 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
915 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
919 case FSF_ACCESS_DENIED:
922 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
924 case FSF_PORT_HANDLE_NOT_VALID:
925 zfcp_erp_adapter_reopen(adapter, 0, "fsscth1");
927 case FSF_GENERIC_COMMAND_REJECTED:
928 case FSF_PAYLOAD_SIZE_MISMATCH:
929 case FSF_REQUEST_SIZE_TOO_LARGE:
930 case FSF_RESPONSE_SIZE_TOO_LARGE:
931 case FSF_SBAL_MISMATCH:
932 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
938 ct->handler(ct->handler_data);
941 static void zfcp_fsf_setup_ct_els_unchained(struct zfcp_qdio *qdio,
942 struct zfcp_qdio_req *q_req,
943 struct scatterlist *sg_req,
944 struct scatterlist *sg_resp)
946 zfcp_qdio_fill_next(qdio, q_req, sg_virt(sg_req), sg_req->length);
947 zfcp_qdio_fill_next(qdio, q_req, sg_virt(sg_resp), sg_resp->length);
948 zfcp_qdio_set_sbale_last(qdio, q_req);
951 static int zfcp_fsf_setup_ct_els_sbals(struct zfcp_fsf_req *req,
952 struct scatterlist *sg_req,
953 struct scatterlist *sg_resp)
955 struct zfcp_adapter *adapter = req->adapter;
956 struct zfcp_qdio *qdio = adapter->qdio;
957 struct fsf_qtcb *qtcb = req->qtcb;
958 u32 feat = adapter->adapter_features;
960 if (zfcp_adapter_multi_buffer_active(adapter)) {
961 if (zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, sg_req))
963 qtcb->bottom.support.req_buf_length =
964 zfcp_qdio_real_bytes(sg_req);
965 if (zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, sg_resp))
967 qtcb->bottom.support.resp_buf_length =
968 zfcp_qdio_real_bytes(sg_resp);
970 zfcp_qdio_set_data_div(qdio, &req->qdio_req,
971 zfcp_qdio_sbale_count(sg_req));
972 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
973 zfcp_qdio_set_scount(qdio, &req->qdio_req);
977 /* use single, unchained SBAL if it can hold the request */
978 if (zfcp_qdio_sg_one_sbale(sg_req) && zfcp_qdio_sg_one_sbale(sg_resp)) {
979 zfcp_fsf_setup_ct_els_unchained(qdio, &req->qdio_req,
984 if (!(feat & FSF_FEATURE_ELS_CT_CHAINED_SBALS))
987 if (zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, sg_req))
990 qtcb->bottom.support.req_buf_length = zfcp_qdio_real_bytes(sg_req);
992 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
993 zfcp_qdio_skip_to_last_sbale(qdio, &req->qdio_req);
995 if (zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, sg_resp))
998 qtcb->bottom.support.resp_buf_length = zfcp_qdio_real_bytes(sg_resp);
1000 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1005 static int zfcp_fsf_setup_ct_els(struct zfcp_fsf_req *req,
1006 struct scatterlist *sg_req,
1007 struct scatterlist *sg_resp,
1008 unsigned int timeout)
1012 ret = zfcp_fsf_setup_ct_els_sbals(req, sg_req, sg_resp);
1016 /* common settings for ct/gs and els requests */
1018 timeout = 255; /* max value accepted by hardware */
1019 req->qtcb->bottom.support.service_class = FSF_CLASS_3;
1020 req->qtcb->bottom.support.timeout = timeout;
1021 zfcp_fsf_start_timer(req, (timeout + 10) * HZ);
1027 * zfcp_fsf_send_ct - initiate a Generic Service request (FC-GS)
1028 * @ct: pointer to struct zfcp_send_ct with data for request
1029 * @pool: if non-null this mempool is used to allocate struct zfcp_fsf_req
1031 int zfcp_fsf_send_ct(struct zfcp_fc_wka_port *wka_port,
1032 struct zfcp_fsf_ct_els *ct, mempool_t *pool,
1033 unsigned int timeout)
1035 struct zfcp_qdio *qdio = wka_port->adapter->qdio;
1036 struct zfcp_fsf_req *req;
1039 spin_lock_irq(&qdio->req_q_lock);
1040 if (zfcp_qdio_sbal_get(qdio))
1043 req = zfcp_fsf_req_create(qdio, FSF_QTCB_SEND_GENERIC,
1044 SBAL_SFLAGS0_TYPE_WRITE_READ, pool);
1051 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1052 ret = zfcp_fsf_setup_ct_els(req, ct->req, ct->resp, timeout);
1056 req->handler = zfcp_fsf_send_ct_handler;
1057 req->qtcb->header.port_handle = wka_port->handle;
1060 zfcp_dbf_san_req("fssct_1", req, wka_port->d_id);
1062 ret = zfcp_fsf_req_send(req);
1069 zfcp_fsf_req_free(req);
1071 spin_unlock_irq(&qdio->req_q_lock);
1075 static void zfcp_fsf_send_els_handler(struct zfcp_fsf_req *req)
1077 struct zfcp_fsf_ct_els *send_els = req->data;
1078 struct zfcp_port *port = send_els->port;
1079 struct fsf_qtcb_header *header = &req->qtcb->header;
1081 send_els->status = -EINVAL;
1083 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1084 goto skip_fsfstatus;
1086 switch (header->fsf_status) {
1088 zfcp_dbf_san_res("fsselh1", req);
1089 send_els->status = 0;
1091 case FSF_SERVICE_CLASS_NOT_SUPPORTED:
1092 zfcp_fsf_class_not_supp(req);
1094 case FSF_ADAPTER_STATUS_AVAILABLE:
1095 switch (header->fsf_status_qual.word[0]){
1096 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1097 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1098 case FSF_SQ_RETRY_IF_POSSIBLE:
1099 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1103 case FSF_ELS_COMMAND_REJECTED:
1104 case FSF_PAYLOAD_SIZE_MISMATCH:
1105 case FSF_REQUEST_SIZE_TOO_LARGE:
1106 case FSF_RESPONSE_SIZE_TOO_LARGE:
1108 case FSF_ACCESS_DENIED:
1110 zfcp_cfdc_port_denied(port, &header->fsf_status_qual);
1111 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1114 case FSF_SBAL_MISMATCH:
1115 /* should never occur, avoided in zfcp_fsf_send_els */
1118 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1122 if (send_els->handler)
1123 send_els->handler(send_els->handler_data);
1127 * zfcp_fsf_send_els - initiate an ELS command (FC-FS)
1128 * @els: pointer to struct zfcp_send_els with data for the command
1130 int zfcp_fsf_send_els(struct zfcp_adapter *adapter, u32 d_id,
1131 struct zfcp_fsf_ct_els *els, unsigned int timeout)
1133 struct zfcp_fsf_req *req;
1134 struct zfcp_qdio *qdio = adapter->qdio;
1137 spin_lock_irq(&qdio->req_q_lock);
1138 if (zfcp_qdio_sbal_get(qdio))
1141 req = zfcp_fsf_req_create(qdio, FSF_QTCB_SEND_ELS,
1142 SBAL_SFLAGS0_TYPE_WRITE_READ, NULL);
1149 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1151 if (!zfcp_adapter_multi_buffer_active(adapter))
1152 zfcp_qdio_sbal_limit(qdio, &req->qdio_req, 2);
1154 ret = zfcp_fsf_setup_ct_els(req, els->req, els->resp, timeout);
1159 hton24(req->qtcb->bottom.support.d_id, d_id);
1160 req->handler = zfcp_fsf_send_els_handler;
1163 zfcp_dbf_san_req("fssels1", req, d_id);
1165 ret = zfcp_fsf_req_send(req);
1172 zfcp_fsf_req_free(req);
1174 spin_unlock_irq(&qdio->req_q_lock);
1178 int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action)
1180 struct zfcp_fsf_req *req;
1181 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1184 spin_lock_irq(&qdio->req_q_lock);
1185 if (zfcp_qdio_sbal_get(qdio))
1188 req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_CONFIG_DATA,
1189 SBAL_SFLAGS0_TYPE_READ,
1190 qdio->adapter->pool.erp_req);
1193 retval = PTR_ERR(req);
1197 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1198 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1200 req->qtcb->bottom.config.feature_selection =
1202 FSF_FEATURE_LUN_SHARING |
1203 FSF_FEATURE_NOTIFICATION_LOST |
1204 FSF_FEATURE_UPDATE_ALERT;
1205 req->erp_action = erp_action;
1206 req->handler = zfcp_fsf_exchange_config_data_handler;
1207 erp_action->fsf_req_id = req->req_id;
1209 zfcp_fsf_start_erp_timer(req);
1210 retval = zfcp_fsf_req_send(req);
1212 zfcp_fsf_req_free(req);
1213 erp_action->fsf_req_id = 0;
1216 spin_unlock_irq(&qdio->req_q_lock);
1220 int zfcp_fsf_exchange_config_data_sync(struct zfcp_qdio *qdio,
1221 struct fsf_qtcb_bottom_config *data)
1223 struct zfcp_fsf_req *req = NULL;
1226 spin_lock_irq(&qdio->req_q_lock);
1227 if (zfcp_qdio_sbal_get(qdio))
1230 req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_CONFIG_DATA,
1231 SBAL_SFLAGS0_TYPE_READ, NULL);
1234 retval = PTR_ERR(req);
1238 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1239 req->handler = zfcp_fsf_exchange_config_data_handler;
1241 req->qtcb->bottom.config.feature_selection =
1243 FSF_FEATURE_LUN_SHARING |
1244 FSF_FEATURE_NOTIFICATION_LOST |
1245 FSF_FEATURE_UPDATE_ALERT;
1250 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1251 retval = zfcp_fsf_req_send(req);
1252 spin_unlock_irq(&qdio->req_q_lock);
1254 wait_for_completion(&req->completion);
1256 zfcp_fsf_req_free(req);
1260 spin_unlock_irq(&qdio->req_q_lock);
1265 * zfcp_fsf_exchange_port_data - request information about local port
1266 * @erp_action: ERP action for the adapter for which port data is requested
1267 * Returns: 0 on success, error otherwise
1269 int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action)
1271 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1272 struct zfcp_fsf_req *req;
1275 if (!(qdio->adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT))
1278 spin_lock_irq(&qdio->req_q_lock);
1279 if (zfcp_qdio_sbal_get(qdio))
1282 req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_PORT_DATA,
1283 SBAL_SFLAGS0_TYPE_READ,
1284 qdio->adapter->pool.erp_req);
1287 retval = PTR_ERR(req);
1291 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1292 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1294 req->handler = zfcp_fsf_exchange_port_data_handler;
1295 req->erp_action = erp_action;
1296 erp_action->fsf_req_id = req->req_id;
1298 zfcp_fsf_start_erp_timer(req);
1299 retval = zfcp_fsf_req_send(req);
1301 zfcp_fsf_req_free(req);
1302 erp_action->fsf_req_id = 0;
1305 spin_unlock_irq(&qdio->req_q_lock);
1310 * zfcp_fsf_exchange_port_data_sync - request information about local port
1311 * @qdio: pointer to struct zfcp_qdio
1312 * @data: pointer to struct fsf_qtcb_bottom_port
1313 * Returns: 0 on success, error otherwise
1315 int zfcp_fsf_exchange_port_data_sync(struct zfcp_qdio *qdio,
1316 struct fsf_qtcb_bottom_port *data)
1318 struct zfcp_fsf_req *req = NULL;
1321 if (!(qdio->adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT))
1324 spin_lock_irq(&qdio->req_q_lock);
1325 if (zfcp_qdio_sbal_get(qdio))
1328 req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_PORT_DATA,
1329 SBAL_SFLAGS0_TYPE_READ, NULL);
1332 retval = PTR_ERR(req);
1339 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1341 req->handler = zfcp_fsf_exchange_port_data_handler;
1342 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1343 retval = zfcp_fsf_req_send(req);
1344 spin_unlock_irq(&qdio->req_q_lock);
1347 wait_for_completion(&req->completion);
1349 zfcp_fsf_req_free(req);
1354 spin_unlock_irq(&qdio->req_q_lock);
1358 static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req *req)
1360 struct zfcp_port *port = req->data;
1361 struct fsf_qtcb_header *header = &req->qtcb->header;
1362 struct fc_els_flogi *plogi;
1364 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1367 switch (header->fsf_status) {
1368 case FSF_PORT_ALREADY_OPEN:
1370 case FSF_ACCESS_DENIED:
1371 zfcp_cfdc_port_denied(port, &header->fsf_status_qual);
1372 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1374 case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED:
1375 dev_warn(&req->adapter->ccw_device->dev,
1376 "Not enough FCP adapter resources to open "
1377 "remote port 0x%016Lx\n",
1378 (unsigned long long)port->wwpn);
1379 zfcp_erp_set_port_status(port,
1380 ZFCP_STATUS_COMMON_ERP_FAILED);
1381 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1383 case FSF_ADAPTER_STATUS_AVAILABLE:
1384 switch (header->fsf_status_qual.word[0]) {
1385 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1386 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1387 case FSF_SQ_NO_RETRY_POSSIBLE:
1388 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1393 port->handle = header->port_handle;
1394 atomic_set_mask(ZFCP_STATUS_COMMON_OPEN |
1395 ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
1396 atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED |
1397 ZFCP_STATUS_COMMON_ACCESS_BOXED,
1399 /* check whether D_ID has changed during open */
1401 * FIXME: This check is not airtight, as the FCP channel does
1402 * not monitor closures of target port connections caused on
1403 * the remote side. Thus, they might miss out on invalidating
1404 * locally cached WWPNs (and other N_Port parameters) of gone
1405 * target ports. So, our heroic attempt to make things safe
1406 * could be undermined by 'open port' response data tagged with
1407 * obsolete WWPNs. Another reason to monitor potential
1408 * connection closures ourself at least (by interpreting
1409 * incoming ELS' and unsolicited status). It just crosses my
1410 * mind that one should be able to cross-check by means of
1411 * another GID_PN straight after a port has been opened.
1412 * Alternately, an ADISC/PDISC ELS should suffice, as well.
1414 plogi = (struct fc_els_flogi *) req->qtcb->bottom.support.els;
1415 if (req->qtcb->bottom.support.els1_length >=
1417 zfcp_fc_plogi_evaluate(port, plogi);
1419 case FSF_UNKNOWN_OP_SUBTYPE:
1420 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1425 put_device(&port->dev);
1429 * zfcp_fsf_open_port - create and send open port request
1430 * @erp_action: pointer to struct zfcp_erp_action
1431 * Returns: 0 on success, error otherwise
1433 int zfcp_fsf_open_port(struct zfcp_erp_action *erp_action)
1435 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1436 struct zfcp_port *port = erp_action->port;
1437 struct zfcp_fsf_req *req;
1440 spin_lock_irq(&qdio->req_q_lock);
1441 if (zfcp_qdio_sbal_get(qdio))
1444 req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_PORT_WITH_DID,
1445 SBAL_SFLAGS0_TYPE_READ,
1446 qdio->adapter->pool.erp_req);
1449 retval = PTR_ERR(req);
1453 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1454 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1456 req->handler = zfcp_fsf_open_port_handler;
1457 hton24(req->qtcb->bottom.support.d_id, port->d_id);
1459 req->erp_action = erp_action;
1460 erp_action->fsf_req_id = req->req_id;
1461 get_device(&port->dev);
1463 zfcp_fsf_start_erp_timer(req);
1464 retval = zfcp_fsf_req_send(req);
1466 zfcp_fsf_req_free(req);
1467 erp_action->fsf_req_id = 0;
1468 put_device(&port->dev);
1471 spin_unlock_irq(&qdio->req_q_lock);
1475 static void zfcp_fsf_close_port_handler(struct zfcp_fsf_req *req)
1477 struct zfcp_port *port = req->data;
1479 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1482 switch (req->qtcb->header.fsf_status) {
1483 case FSF_PORT_HANDLE_NOT_VALID:
1484 zfcp_erp_adapter_reopen(port->adapter, 0, "fscph_1");
1485 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1487 case FSF_ADAPTER_STATUS_AVAILABLE:
1490 zfcp_erp_clear_port_status(port, ZFCP_STATUS_COMMON_OPEN);
1496 * zfcp_fsf_close_port - create and send close port request
1497 * @erp_action: pointer to struct zfcp_erp_action
1498 * Returns: 0 on success, error otherwise
1500 int zfcp_fsf_close_port(struct zfcp_erp_action *erp_action)
1502 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1503 struct zfcp_fsf_req *req;
1506 spin_lock_irq(&qdio->req_q_lock);
1507 if (zfcp_qdio_sbal_get(qdio))
1510 req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PORT,
1511 SBAL_SFLAGS0_TYPE_READ,
1512 qdio->adapter->pool.erp_req);
1515 retval = PTR_ERR(req);
1519 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1520 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1522 req->handler = zfcp_fsf_close_port_handler;
1523 req->data = erp_action->port;
1524 req->erp_action = erp_action;
1525 req->qtcb->header.port_handle = erp_action->port->handle;
1526 erp_action->fsf_req_id = req->req_id;
1528 zfcp_fsf_start_erp_timer(req);
1529 retval = zfcp_fsf_req_send(req);
1531 zfcp_fsf_req_free(req);
1532 erp_action->fsf_req_id = 0;
1535 spin_unlock_irq(&qdio->req_q_lock);
1539 static void zfcp_fsf_open_wka_port_handler(struct zfcp_fsf_req *req)
1541 struct zfcp_fc_wka_port *wka_port = req->data;
1542 struct fsf_qtcb_header *header = &req->qtcb->header;
1544 if (req->status & ZFCP_STATUS_FSFREQ_ERROR) {
1545 wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE;
1549 switch (header->fsf_status) {
1550 case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED:
1551 dev_warn(&req->adapter->ccw_device->dev,
1552 "Opening WKA port 0x%x failed\n", wka_port->d_id);
1554 case FSF_ADAPTER_STATUS_AVAILABLE:
1555 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1557 case FSF_ACCESS_DENIED:
1558 wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE;
1561 wka_port->handle = header->port_handle;
1563 case FSF_PORT_ALREADY_OPEN:
1564 wka_port->status = ZFCP_FC_WKA_PORT_ONLINE;
1567 wake_up(&wka_port->completion_wq);
1571 * zfcp_fsf_open_wka_port - create and send open wka-port request
1572 * @wka_port: pointer to struct zfcp_fc_wka_port
1573 * Returns: 0 on success, error otherwise
1575 int zfcp_fsf_open_wka_port(struct zfcp_fc_wka_port *wka_port)
1577 struct zfcp_qdio *qdio = wka_port->adapter->qdio;
1578 struct zfcp_fsf_req *req;
1581 spin_lock_irq(&qdio->req_q_lock);
1582 if (zfcp_qdio_sbal_get(qdio))
1585 req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_PORT_WITH_DID,
1586 SBAL_SFLAGS0_TYPE_READ,
1587 qdio->adapter->pool.erp_req);
1590 retval = PTR_ERR(req);
1594 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1595 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1597 req->handler = zfcp_fsf_open_wka_port_handler;
1598 hton24(req->qtcb->bottom.support.d_id, wka_port->d_id);
1599 req->data = wka_port;
1601 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1602 retval = zfcp_fsf_req_send(req);
1604 zfcp_fsf_req_free(req);
1606 spin_unlock_irq(&qdio->req_q_lock);
1610 static void zfcp_fsf_close_wka_port_handler(struct zfcp_fsf_req *req)
1612 struct zfcp_fc_wka_port *wka_port = req->data;
1614 if (req->qtcb->header.fsf_status == FSF_PORT_HANDLE_NOT_VALID) {
1615 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1616 zfcp_erp_adapter_reopen(wka_port->adapter, 0, "fscwph1");
1619 wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE;
1620 wake_up(&wka_port->completion_wq);
1624 * zfcp_fsf_close_wka_port - create and send close wka port request
1625 * @wka_port: WKA port to open
1626 * Returns: 0 on success, error otherwise
1628 int zfcp_fsf_close_wka_port(struct zfcp_fc_wka_port *wka_port)
1630 struct zfcp_qdio *qdio = wka_port->adapter->qdio;
1631 struct zfcp_fsf_req *req;
1634 spin_lock_irq(&qdio->req_q_lock);
1635 if (zfcp_qdio_sbal_get(qdio))
1638 req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PORT,
1639 SBAL_SFLAGS0_TYPE_READ,
1640 qdio->adapter->pool.erp_req);
1643 retval = PTR_ERR(req);
1647 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1648 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1650 req->handler = zfcp_fsf_close_wka_port_handler;
1651 req->data = wka_port;
1652 req->qtcb->header.port_handle = wka_port->handle;
1654 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1655 retval = zfcp_fsf_req_send(req);
1657 zfcp_fsf_req_free(req);
1659 spin_unlock_irq(&qdio->req_q_lock);
1663 static void zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *req)
1665 struct zfcp_port *port = req->data;
1666 struct fsf_qtcb_header *header = &req->qtcb->header;
1667 struct scsi_device *sdev;
1669 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1672 switch (header->fsf_status) {
1673 case FSF_PORT_HANDLE_NOT_VALID:
1674 zfcp_erp_adapter_reopen(port->adapter, 0, "fscpph1");
1675 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1677 case FSF_ACCESS_DENIED:
1678 zfcp_cfdc_port_denied(port, &header->fsf_status_qual);
1680 case FSF_PORT_BOXED:
1681 /* can't use generic zfcp_erp_modify_port_status because
1682 * ZFCP_STATUS_COMMON_OPEN must not be reset for the port */
1683 atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
1684 shost_for_each_device(sdev, port->adapter->scsi_host)
1685 if (sdev_to_zfcp(sdev)->port == port)
1686 atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN,
1687 &sdev_to_zfcp(sdev)->status);
1688 zfcp_erp_set_port_status(port, ZFCP_STATUS_COMMON_ACCESS_BOXED);
1689 zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED,
1691 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1693 case FSF_ADAPTER_STATUS_AVAILABLE:
1694 switch (header->fsf_status_qual.word[0]) {
1695 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1697 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1698 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1703 /* can't use generic zfcp_erp_modify_port_status because
1704 * ZFCP_STATUS_COMMON_OPEN must not be reset for the port
1706 atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
1707 shost_for_each_device(sdev, port->adapter->scsi_host)
1708 if (sdev_to_zfcp(sdev)->port == port)
1709 atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN,
1710 &sdev_to_zfcp(sdev)->status);
1716 * zfcp_fsf_close_physical_port - close physical port
1717 * @erp_action: pointer to struct zfcp_erp_action
1718 * Returns: 0 on success
1720 int zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action)
1722 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1723 struct zfcp_fsf_req *req;
1726 spin_lock_irq(&qdio->req_q_lock);
1727 if (zfcp_qdio_sbal_get(qdio))
1730 req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PHYSICAL_PORT,
1731 SBAL_SFLAGS0_TYPE_READ,
1732 qdio->adapter->pool.erp_req);
1735 retval = PTR_ERR(req);
1739 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1740 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1742 req->data = erp_action->port;
1743 req->qtcb->header.port_handle = erp_action->port->handle;
1744 req->erp_action = erp_action;
1745 req->handler = zfcp_fsf_close_physical_port_handler;
1746 erp_action->fsf_req_id = req->req_id;
1748 zfcp_fsf_start_erp_timer(req);
1749 retval = zfcp_fsf_req_send(req);
1751 zfcp_fsf_req_free(req);
1752 erp_action->fsf_req_id = 0;
1755 spin_unlock_irq(&qdio->req_q_lock);
1759 static void zfcp_fsf_open_lun_handler(struct zfcp_fsf_req *req)
1761 struct zfcp_adapter *adapter = req->adapter;
1762 struct scsi_device *sdev = req->data;
1763 struct zfcp_scsi_dev *zfcp_sdev;
1764 struct fsf_qtcb_header *header = &req->qtcb->header;
1765 struct fsf_qtcb_bottom_support *bottom = &req->qtcb->bottom.support;
1767 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1770 zfcp_sdev = sdev_to_zfcp(sdev);
1772 atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED |
1773 ZFCP_STATUS_COMMON_ACCESS_BOXED |
1774 ZFCP_STATUS_LUN_SHARED |
1775 ZFCP_STATUS_LUN_READONLY,
1776 &zfcp_sdev->status);
1778 switch (header->fsf_status) {
1780 case FSF_PORT_HANDLE_NOT_VALID:
1781 zfcp_erp_adapter_reopen(adapter, 0, "fsouh_1");
1783 case FSF_LUN_ALREADY_OPEN:
1785 case FSF_ACCESS_DENIED:
1786 zfcp_cfdc_lun_denied(sdev, &header->fsf_status_qual);
1787 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1789 case FSF_PORT_BOXED:
1790 zfcp_erp_set_port_status(zfcp_sdev->port,
1791 ZFCP_STATUS_COMMON_ACCESS_BOXED);
1792 zfcp_erp_port_reopen(zfcp_sdev->port,
1793 ZFCP_STATUS_COMMON_ERP_FAILED, "fsouh_2");
1794 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1796 case FSF_LUN_SHARING_VIOLATION:
1797 zfcp_cfdc_lun_shrng_vltn(sdev, &header->fsf_status_qual);
1798 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1800 case FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED:
1801 dev_warn(&adapter->ccw_device->dev,
1802 "No handle is available for LUN "
1803 "0x%016Lx on port 0x%016Lx\n",
1804 (unsigned long long)zfcp_scsi_dev_lun(sdev),
1805 (unsigned long long)zfcp_sdev->port->wwpn);
1806 zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_ERP_FAILED);
1808 case FSF_INVALID_COMMAND_OPTION:
1809 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1811 case FSF_ADAPTER_STATUS_AVAILABLE:
1812 switch (header->fsf_status_qual.word[0]) {
1813 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1814 zfcp_fc_test_link(zfcp_sdev->port);
1816 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1817 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1823 zfcp_sdev->lun_handle = header->lun_handle;
1824 atomic_set_mask(ZFCP_STATUS_COMMON_OPEN, &zfcp_sdev->status);
1825 zfcp_cfdc_open_lun_eval(sdev, bottom);
1831 * zfcp_fsf_open_lun - open LUN
1832 * @erp_action: pointer to struct zfcp_erp_action
1833 * Returns: 0 on success, error otherwise
1835 int zfcp_fsf_open_lun(struct zfcp_erp_action *erp_action)
1837 struct zfcp_adapter *adapter = erp_action->adapter;
1838 struct zfcp_qdio *qdio = adapter->qdio;
1839 struct zfcp_fsf_req *req;
1842 spin_lock_irq(&qdio->req_q_lock);
1843 if (zfcp_qdio_sbal_get(qdio))
1846 req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_LUN,
1847 SBAL_SFLAGS0_TYPE_READ,
1848 adapter->pool.erp_req);
1851 retval = PTR_ERR(req);
1855 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1856 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1858 req->qtcb->header.port_handle = erp_action->port->handle;
1859 req->qtcb->bottom.support.fcp_lun = zfcp_scsi_dev_lun(erp_action->sdev);
1860 req->handler = zfcp_fsf_open_lun_handler;
1861 req->data = erp_action->sdev;
1862 req->erp_action = erp_action;
1863 erp_action->fsf_req_id = req->req_id;
1865 if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE))
1866 req->qtcb->bottom.support.option = FSF_OPEN_LUN_SUPPRESS_BOXING;
1868 zfcp_fsf_start_erp_timer(req);
1869 retval = zfcp_fsf_req_send(req);
1871 zfcp_fsf_req_free(req);
1872 erp_action->fsf_req_id = 0;
1875 spin_unlock_irq(&qdio->req_q_lock);
1879 static void zfcp_fsf_close_lun_handler(struct zfcp_fsf_req *req)
1881 struct scsi_device *sdev = req->data;
1882 struct zfcp_scsi_dev *zfcp_sdev;
1884 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1887 zfcp_sdev = sdev_to_zfcp(sdev);
1889 switch (req->qtcb->header.fsf_status) {
1890 case FSF_PORT_HANDLE_NOT_VALID:
1891 zfcp_erp_adapter_reopen(zfcp_sdev->port->adapter, 0, "fscuh_1");
1892 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1894 case FSF_LUN_HANDLE_NOT_VALID:
1895 zfcp_erp_port_reopen(zfcp_sdev->port, 0, "fscuh_2");
1896 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1898 case FSF_PORT_BOXED:
1899 zfcp_erp_set_port_status(zfcp_sdev->port,
1900 ZFCP_STATUS_COMMON_ACCESS_BOXED);
1901 zfcp_erp_port_reopen(zfcp_sdev->port,
1902 ZFCP_STATUS_COMMON_ERP_FAILED, "fscuh_3");
1903 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1905 case FSF_ADAPTER_STATUS_AVAILABLE:
1906 switch (req->qtcb->header.fsf_status_qual.word[0]) {
1907 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1908 zfcp_fc_test_link(zfcp_sdev->port);
1910 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1911 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1916 atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, &zfcp_sdev->status);
1922 * zfcp_fsf_close_LUN - close LUN
1923 * @erp_action: pointer to erp_action triggering the "close LUN"
1924 * Returns: 0 on success, error otherwise
1926 int zfcp_fsf_close_lun(struct zfcp_erp_action *erp_action)
1928 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1929 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(erp_action->sdev);
1930 struct zfcp_fsf_req *req;
1933 spin_lock_irq(&qdio->req_q_lock);
1934 if (zfcp_qdio_sbal_get(qdio))
1937 req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_LUN,
1938 SBAL_SFLAGS0_TYPE_READ,
1939 qdio->adapter->pool.erp_req);
1942 retval = PTR_ERR(req);
1946 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1947 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1949 req->qtcb->header.port_handle = erp_action->port->handle;
1950 req->qtcb->header.lun_handle = zfcp_sdev->lun_handle;
1951 req->handler = zfcp_fsf_close_lun_handler;
1952 req->data = erp_action->sdev;
1953 req->erp_action = erp_action;
1954 erp_action->fsf_req_id = req->req_id;
1956 zfcp_fsf_start_erp_timer(req);
1957 retval = zfcp_fsf_req_send(req);
1959 zfcp_fsf_req_free(req);
1960 erp_action->fsf_req_id = 0;
1963 spin_unlock_irq(&qdio->req_q_lock);
1967 static void zfcp_fsf_update_lat(struct fsf_latency_record *lat_rec, u32 lat)
1969 lat_rec->sum += lat;
1970 lat_rec->min = min(lat_rec->min, lat);
1971 lat_rec->max = max(lat_rec->max, lat);
1974 static void zfcp_fsf_req_trace(struct zfcp_fsf_req *req, struct scsi_cmnd *scsi)
1976 struct fsf_qual_latency_info *lat_in;
1977 struct latency_cont *lat = NULL;
1978 struct zfcp_scsi_dev *zfcp_sdev;
1979 struct zfcp_blk_drv_data blktrc;
1980 int ticks = req->adapter->timer_ticks;
1982 lat_in = &req->qtcb->prefix.prot_status_qual.latency_info;
1985 blktrc.magic = ZFCP_BLK_DRV_DATA_MAGIC;
1986 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1987 blktrc.flags |= ZFCP_BLK_REQ_ERROR;
1988 blktrc.inb_usage = 0;
1989 blktrc.outb_usage = req->qdio_req.qdio_outb_usage;
1991 if (req->adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA &&
1992 !(req->status & ZFCP_STATUS_FSFREQ_ERROR)) {
1993 zfcp_sdev = sdev_to_zfcp(scsi->device);
1994 blktrc.flags |= ZFCP_BLK_LAT_VALID;
1995 blktrc.channel_lat = lat_in->channel_lat * ticks;
1996 blktrc.fabric_lat = lat_in->fabric_lat * ticks;
1998 switch (req->qtcb->bottom.io.data_direction) {
1999 case FSF_DATADIR_DIF_READ_STRIP:
2000 case FSF_DATADIR_DIF_READ_CONVERT:
2001 case FSF_DATADIR_READ:
2002 lat = &zfcp_sdev->latencies.read;
2004 case FSF_DATADIR_DIF_WRITE_INSERT:
2005 case FSF_DATADIR_DIF_WRITE_CONVERT:
2006 case FSF_DATADIR_WRITE:
2007 lat = &zfcp_sdev->latencies.write;
2009 case FSF_DATADIR_CMND:
2010 lat = &zfcp_sdev->latencies.cmd;
2015 spin_lock(&zfcp_sdev->latencies.lock);
2016 zfcp_fsf_update_lat(&lat->channel, lat_in->channel_lat);
2017 zfcp_fsf_update_lat(&lat->fabric, lat_in->fabric_lat);
2019 spin_unlock(&zfcp_sdev->latencies.lock);
2023 blk_add_driver_data(scsi->request->q, scsi->request, &blktrc,
2027 static void zfcp_fsf_fcp_handler_common(struct zfcp_fsf_req *req)
2029 struct scsi_cmnd *scmnd = req->data;
2030 struct scsi_device *sdev = scmnd->device;
2031 struct zfcp_scsi_dev *zfcp_sdev;
2032 struct fsf_qtcb_header *header = &req->qtcb->header;
2034 if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR))
2037 zfcp_sdev = sdev_to_zfcp(sdev);
2039 switch (header->fsf_status) {
2040 case FSF_HANDLE_MISMATCH:
2041 case FSF_PORT_HANDLE_NOT_VALID:
2042 zfcp_erp_adapter_reopen(zfcp_sdev->port->adapter, 0, "fssfch1");
2043 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2045 case FSF_FCPLUN_NOT_VALID:
2046 case FSF_LUN_HANDLE_NOT_VALID:
2047 zfcp_erp_port_reopen(zfcp_sdev->port, 0, "fssfch2");
2048 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2050 case FSF_SERVICE_CLASS_NOT_SUPPORTED:
2051 zfcp_fsf_class_not_supp(req);
2053 case FSF_ACCESS_DENIED:
2054 zfcp_cfdc_lun_denied(sdev, &header->fsf_status_qual);
2055 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2057 case FSF_DIRECTION_INDICATOR_NOT_VALID:
2058 dev_err(&req->adapter->ccw_device->dev,
2059 "Incorrect direction %d, LUN 0x%016Lx on port "
2060 "0x%016Lx closed\n",
2061 req->qtcb->bottom.io.data_direction,
2062 (unsigned long long)zfcp_scsi_dev_lun(sdev),
2063 (unsigned long long)zfcp_sdev->port->wwpn);
2064 zfcp_erp_adapter_shutdown(zfcp_sdev->port->adapter, 0,
2066 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2068 case FSF_CMND_LENGTH_NOT_VALID:
2069 dev_err(&req->adapter->ccw_device->dev,
2070 "Incorrect CDB length %d, LUN 0x%016Lx on "
2071 "port 0x%016Lx closed\n",
2072 req->qtcb->bottom.io.fcp_cmnd_length,
2073 (unsigned long long)zfcp_scsi_dev_lun(sdev),
2074 (unsigned long long)zfcp_sdev->port->wwpn);
2075 zfcp_erp_adapter_shutdown(zfcp_sdev->port->adapter, 0,
2077 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2079 case FSF_PORT_BOXED:
2080 zfcp_erp_set_port_status(zfcp_sdev->port,
2081 ZFCP_STATUS_COMMON_ACCESS_BOXED);
2082 zfcp_erp_port_reopen(zfcp_sdev->port,
2083 ZFCP_STATUS_COMMON_ERP_FAILED, "fssfch5");
2084 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2087 zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_ACCESS_BOXED);
2088 zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED,
2090 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2092 case FSF_ADAPTER_STATUS_AVAILABLE:
2093 if (header->fsf_status_qual.word[0] ==
2094 FSF_SQ_INVOKE_LINK_TEST_PROCEDURE)
2095 zfcp_fc_test_link(zfcp_sdev->port);
2096 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2101 static void zfcp_fsf_fcp_cmnd_handler(struct zfcp_fsf_req *req)
2103 struct scsi_cmnd *scpnt;
2104 struct fcp_resp_with_ext *fcp_rsp;
2105 unsigned long flags;
2107 read_lock_irqsave(&req->adapter->abort_lock, flags);
2110 if (unlikely(!scpnt)) {
2111 read_unlock_irqrestore(&req->adapter->abort_lock, flags);
2115 zfcp_fsf_fcp_handler_common(req);
2117 if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) {
2118 set_host_byte(scpnt, DID_TRANSPORT_DISRUPTED);
2119 goto skip_fsfstatus;
2122 switch (req->qtcb->header.fsf_status) {
2123 case FSF_INCONSISTENT_PROT_DATA:
2124 case FSF_INVALID_PROT_PARM:
2125 set_host_byte(scpnt, DID_ERROR);
2126 goto skip_fsfstatus;
2127 case FSF_BLOCK_GUARD_CHECK_FAILURE:
2128 zfcp_scsi_dif_sense_error(scpnt, 0x1);
2129 goto skip_fsfstatus;
2130 case FSF_APP_TAG_CHECK_FAILURE:
2131 zfcp_scsi_dif_sense_error(scpnt, 0x2);
2132 goto skip_fsfstatus;
2133 case FSF_REF_TAG_CHECK_FAILURE:
2134 zfcp_scsi_dif_sense_error(scpnt, 0x3);
2135 goto skip_fsfstatus;
2137 fcp_rsp = (struct fcp_resp_with_ext *) &req->qtcb->bottom.io.fcp_rsp;
2138 zfcp_fc_eval_fcp_rsp(fcp_rsp, scpnt);
2141 zfcp_fsf_req_trace(req, scpnt);
2142 zfcp_dbf_scsi_result(scpnt, req);
2144 scpnt->host_scribble = NULL;
2145 (scpnt->scsi_done) (scpnt);
2147 * We must hold this lock until scsi_done has been called.
2148 * Otherwise we may call scsi_done after abort regarding this
2149 * command has completed.
2150 * Note: scsi_done must not block!
2152 read_unlock_irqrestore(&req->adapter->abort_lock, flags);
2155 static int zfcp_fsf_set_data_dir(struct scsi_cmnd *scsi_cmnd, u32 *data_dir)
2157 switch (scsi_get_prot_op(scsi_cmnd)) {
2158 case SCSI_PROT_NORMAL:
2159 switch (scsi_cmnd->sc_data_direction) {
2161 *data_dir = FSF_DATADIR_CMND;
2163 case DMA_FROM_DEVICE:
2164 *data_dir = FSF_DATADIR_READ;
2167 *data_dir = FSF_DATADIR_WRITE;
2169 case DMA_BIDIRECTIONAL:
2174 case SCSI_PROT_READ_STRIP:
2175 *data_dir = FSF_DATADIR_DIF_READ_STRIP;
2177 case SCSI_PROT_WRITE_INSERT:
2178 *data_dir = FSF_DATADIR_DIF_WRITE_INSERT;
2180 case SCSI_PROT_READ_PASS:
2181 *data_dir = FSF_DATADIR_DIF_READ_CONVERT;
2183 case SCSI_PROT_WRITE_PASS:
2184 *data_dir = FSF_DATADIR_DIF_WRITE_CONVERT;
2194 * zfcp_fsf_fcp_cmnd - initiate an FCP command (for a SCSI command)
2195 * @scsi_cmnd: scsi command to be sent
2197 int zfcp_fsf_fcp_cmnd(struct scsi_cmnd *scsi_cmnd)
2199 struct zfcp_fsf_req *req;
2200 struct fcp_cmnd *fcp_cmnd;
2201 u8 sbtype = SBAL_SFLAGS0_TYPE_READ;
2203 struct scsi_device *sdev = scsi_cmnd->device;
2204 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
2205 struct zfcp_adapter *adapter = zfcp_sdev->port->adapter;
2206 struct zfcp_qdio *qdio = adapter->qdio;
2207 struct fsf_qtcb_bottom_io *io;
2208 unsigned long flags;
2210 if (unlikely(!(atomic_read(&zfcp_sdev->status) &
2211 ZFCP_STATUS_COMMON_UNBLOCKED)))
2214 spin_lock_irqsave(&qdio->req_q_lock, flags);
2215 if (atomic_read(&qdio->req_q_free) <= 0) {
2216 atomic_inc(&qdio->req_q_full);
2220 if (scsi_cmnd->sc_data_direction == DMA_TO_DEVICE)
2221 sbtype = SBAL_SFLAGS0_TYPE_WRITE;
2223 req = zfcp_fsf_req_create(qdio, FSF_QTCB_FCP_CMND,
2224 sbtype, adapter->pool.scsi_req);
2227 retval = PTR_ERR(req);
2231 scsi_cmnd->host_scribble = (unsigned char *) req->req_id;
2233 io = &req->qtcb->bottom.io;
2234 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
2235 req->data = scsi_cmnd;
2236 req->handler = zfcp_fsf_fcp_cmnd_handler;
2237 req->qtcb->header.lun_handle = zfcp_sdev->lun_handle;
2238 req->qtcb->header.port_handle = zfcp_sdev->port->handle;
2239 io->service_class = FSF_CLASS_3;
2240 io->fcp_cmnd_length = FCP_CMND_LEN;
2242 if (scsi_get_prot_op(scsi_cmnd) != SCSI_PROT_NORMAL) {
2243 io->data_block_length = scsi_cmnd->device->sector_size;
2244 io->ref_tag_value = scsi_get_lba(scsi_cmnd) & 0xFFFFFFFF;
2247 if (zfcp_fsf_set_data_dir(scsi_cmnd, &io->data_direction))
2248 goto failed_scsi_cmnd;
2250 fcp_cmnd = (struct fcp_cmnd *) &req->qtcb->bottom.io.fcp_cmnd;
2251 zfcp_fc_scsi_to_fcp(fcp_cmnd, scsi_cmnd, 0);
2253 if (scsi_prot_sg_count(scsi_cmnd)) {
2254 zfcp_qdio_set_data_div(qdio, &req->qdio_req,
2255 scsi_prot_sg_count(scsi_cmnd));
2256 retval = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req,
2257 scsi_prot_sglist(scsi_cmnd));
2259 goto failed_scsi_cmnd;
2260 io->prot_data_length = zfcp_qdio_real_bytes(
2261 scsi_prot_sglist(scsi_cmnd));
2264 retval = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req,
2265 scsi_sglist(scsi_cmnd));
2266 if (unlikely(retval))
2267 goto failed_scsi_cmnd;
2269 zfcp_qdio_set_sbale_last(adapter->qdio, &req->qdio_req);
2270 if (zfcp_adapter_multi_buffer_active(adapter))
2271 zfcp_qdio_set_scount(qdio, &req->qdio_req);
2273 retval = zfcp_fsf_req_send(req);
2274 if (unlikely(retval))
2275 goto failed_scsi_cmnd;
2280 zfcp_fsf_req_free(req);
2281 scsi_cmnd->host_scribble = NULL;
2283 spin_unlock_irqrestore(&qdio->req_q_lock, flags);
2287 static void zfcp_fsf_fcp_task_mgmt_handler(struct zfcp_fsf_req *req)
2289 struct fcp_resp_with_ext *fcp_rsp;
2290 struct fcp_resp_rsp_info *rsp_info;
2292 zfcp_fsf_fcp_handler_common(req);
2294 fcp_rsp = (struct fcp_resp_with_ext *) &req->qtcb->bottom.io.fcp_rsp;
2295 rsp_info = (struct fcp_resp_rsp_info *) &fcp_rsp[1];
2297 if ((rsp_info->rsp_code != FCP_TMF_CMPL) ||
2298 (req->status & ZFCP_STATUS_FSFREQ_ERROR))
2299 req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED;
2303 * zfcp_fsf_fcp_task_mgmt - send SCSI task management command
2304 * @scmnd: SCSI command to send the task management command for
2305 * @tm_flags: unsigned byte for task management flags
2306 * Returns: on success pointer to struct fsf_req, NULL otherwise
2308 struct zfcp_fsf_req *zfcp_fsf_fcp_task_mgmt(struct scsi_cmnd *scmnd,
2311 struct zfcp_fsf_req *req = NULL;
2312 struct fcp_cmnd *fcp_cmnd;
2313 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scmnd->device);
2314 struct zfcp_qdio *qdio = zfcp_sdev->port->adapter->qdio;
2316 if (unlikely(!(atomic_read(&zfcp_sdev->status) &
2317 ZFCP_STATUS_COMMON_UNBLOCKED)))
2320 spin_lock_irq(&qdio->req_q_lock);
2321 if (zfcp_qdio_sbal_get(qdio))
2324 req = zfcp_fsf_req_create(qdio, FSF_QTCB_FCP_CMND,
2325 SBAL_SFLAGS0_TYPE_WRITE,
2326 qdio->adapter->pool.scsi_req);
2334 req->handler = zfcp_fsf_fcp_task_mgmt_handler;
2335 req->qtcb->header.lun_handle = zfcp_sdev->lun_handle;
2336 req->qtcb->header.port_handle = zfcp_sdev->port->handle;
2337 req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND;
2338 req->qtcb->bottom.io.service_class = FSF_CLASS_3;
2339 req->qtcb->bottom.io.fcp_cmnd_length = FCP_CMND_LEN;
2341 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
2343 fcp_cmnd = (struct fcp_cmnd *) &req->qtcb->bottom.io.fcp_cmnd;
2344 zfcp_fc_scsi_to_fcp(fcp_cmnd, scmnd, tm_flags);
2346 zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT);
2347 if (!zfcp_fsf_req_send(req))
2350 zfcp_fsf_req_free(req);
2353 spin_unlock_irq(&qdio->req_q_lock);
2357 static void zfcp_fsf_control_file_handler(struct zfcp_fsf_req *req)
2362 * zfcp_fsf_control_file - control file upload/download
2363 * @adapter: pointer to struct zfcp_adapter
2364 * @fsf_cfdc: pointer to struct zfcp_fsf_cfdc
2365 * Returns: on success pointer to struct zfcp_fsf_req, NULL otherwise
2367 struct zfcp_fsf_req *zfcp_fsf_control_file(struct zfcp_adapter *adapter,
2368 struct zfcp_fsf_cfdc *fsf_cfdc)
2370 struct zfcp_qdio *qdio = adapter->qdio;
2371 struct zfcp_fsf_req *req = NULL;
2372 struct fsf_qtcb_bottom_support *bottom;
2376 if (!(adapter->adapter_features & FSF_FEATURE_CFDC))
2377 return ERR_PTR(-EOPNOTSUPP);
2379 switch (fsf_cfdc->command) {
2380 case FSF_QTCB_DOWNLOAD_CONTROL_FILE:
2381 direction = SBAL_SFLAGS0_TYPE_WRITE;
2383 case FSF_QTCB_UPLOAD_CONTROL_FILE:
2384 direction = SBAL_SFLAGS0_TYPE_READ;
2387 return ERR_PTR(-EINVAL);
2390 spin_lock_irq(&qdio->req_q_lock);
2391 if (zfcp_qdio_sbal_get(qdio))
2394 req = zfcp_fsf_req_create(qdio, fsf_cfdc->command, direction, NULL);
2400 req->handler = zfcp_fsf_control_file_handler;
2402 bottom = &req->qtcb->bottom.support;
2403 bottom->operation_subtype = FSF_CFDC_OPERATION_SUBTYPE;
2404 bottom->option = fsf_cfdc->option;
2406 retval = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, fsf_cfdc->sg);
2409 (zfcp_qdio_real_bytes(fsf_cfdc->sg) != ZFCP_CFDC_MAX_SIZE)) {
2410 zfcp_fsf_req_free(req);
2414 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
2415 if (zfcp_adapter_multi_buffer_active(adapter))
2416 zfcp_qdio_set_scount(qdio, &req->qdio_req);
2418 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
2419 retval = zfcp_fsf_req_send(req);
2421 spin_unlock_irq(&qdio->req_q_lock);
2424 wait_for_completion(&req->completion);
2427 return ERR_PTR(retval);
2431 * zfcp_fsf_reqid_check - validate req_id contained in SBAL returned by QDIO
2432 * @adapter: pointer to struct zfcp_adapter
2433 * @sbal_idx: response queue index of SBAL to be processed
2435 void zfcp_fsf_reqid_check(struct zfcp_qdio *qdio, int sbal_idx)
2437 struct zfcp_adapter *adapter = qdio->adapter;
2438 struct qdio_buffer *sbal = qdio->res_q[sbal_idx];
2439 struct qdio_buffer_element *sbale;
2440 struct zfcp_fsf_req *fsf_req;
2441 unsigned long req_id;
2444 for (idx = 0; idx < QDIO_MAX_ELEMENTS_PER_BUFFER; idx++) {
2446 sbale = &sbal->element[idx];
2447 req_id = (unsigned long) sbale->addr;
2448 fsf_req = zfcp_reqlist_find_rm(adapter->req_list, req_id);
2452 * Unknown request means that we have potentially memory
2453 * corruption and must stop the machine immediately.
2455 zfcp_qdio_siosl(adapter);
2456 panic("error: unknown req_id (%lx) on adapter %s.\n",
2457 req_id, dev_name(&adapter->ccw_device->dev));
2460 fsf_req->qdio_req.sbal_response = sbal_idx;
2461 zfcp_fsf_req_complete(fsf_req);
2463 if (likely(sbale->eflags & SBAL_EFLAGS_LAST_ENTRY))
2468 struct zfcp_fsf_req *zfcp_fsf_get_req(struct zfcp_qdio *qdio,
2469 struct qdio_buffer *sbal)
2471 struct qdio_buffer_element *sbale = &sbal->element[0];
2472 u64 req_id = (unsigned long) sbale->addr;
2474 return zfcp_reqlist_find(qdio->adapter->req_list, req_id);