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_qdio_siosl(adapter);
25 zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED,
29 static void zfcp_fsf_start_timer(struct zfcp_fsf_req *fsf_req,
30 unsigned long timeout)
32 fsf_req->timer.function = zfcp_fsf_request_timeout_handler;
33 fsf_req->timer.data = (unsigned long) fsf_req->adapter;
34 fsf_req->timer.expires = jiffies + timeout;
35 add_timer(&fsf_req->timer);
38 static void zfcp_fsf_start_erp_timer(struct zfcp_fsf_req *fsf_req)
40 BUG_ON(!fsf_req->erp_action);
41 fsf_req->timer.function = zfcp_erp_timeout_handler;
42 fsf_req->timer.data = (unsigned long) fsf_req->erp_action;
43 fsf_req->timer.expires = jiffies + 30 * HZ;
44 add_timer(&fsf_req->timer);
47 /* association between FSF command and FSF QTCB type */
48 static u32 fsf_qtcb_type[] = {
49 [FSF_QTCB_FCP_CMND] = FSF_IO_COMMAND,
50 [FSF_QTCB_ABORT_FCP_CMND] = FSF_SUPPORT_COMMAND,
51 [FSF_QTCB_OPEN_PORT_WITH_DID] = FSF_SUPPORT_COMMAND,
52 [FSF_QTCB_OPEN_LUN] = FSF_SUPPORT_COMMAND,
53 [FSF_QTCB_CLOSE_LUN] = FSF_SUPPORT_COMMAND,
54 [FSF_QTCB_CLOSE_PORT] = FSF_SUPPORT_COMMAND,
55 [FSF_QTCB_CLOSE_PHYSICAL_PORT] = FSF_SUPPORT_COMMAND,
56 [FSF_QTCB_SEND_ELS] = FSF_SUPPORT_COMMAND,
57 [FSF_QTCB_SEND_GENERIC] = FSF_SUPPORT_COMMAND,
58 [FSF_QTCB_EXCHANGE_CONFIG_DATA] = FSF_CONFIG_COMMAND,
59 [FSF_QTCB_EXCHANGE_PORT_DATA] = FSF_PORT_COMMAND,
60 [FSF_QTCB_DOWNLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND,
61 [FSF_QTCB_UPLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND
64 static void zfcp_fsf_class_not_supp(struct zfcp_fsf_req *req)
66 dev_err(&req->adapter->ccw_device->dev, "FCP device not "
67 "operational because of an unsupported FC class\n");
68 zfcp_erp_adapter_shutdown(req->adapter, 0, "fscns_1", req);
69 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
73 * zfcp_fsf_req_free - free memory used by fsf request
74 * @fsf_req: pointer to struct zfcp_fsf_req
76 void zfcp_fsf_req_free(struct zfcp_fsf_req *req)
78 if (likely(req->pool)) {
79 if (likely(req->qtcb))
80 mempool_free(req->qtcb, req->adapter->pool.qtcb_pool);
81 mempool_free(req, req->pool);
85 if (likely(req->qtcb))
86 kmem_cache_free(zfcp_data.qtcb_cache, req->qtcb);
90 static void zfcp_fsf_status_read_port_closed(struct zfcp_fsf_req *req)
93 struct fsf_status_read_buffer *sr_buf = req->data;
94 struct zfcp_adapter *adapter = req->adapter;
95 struct zfcp_port *port;
96 int d_id = ntoh24(sr_buf->d_id);
98 read_lock_irqsave(&adapter->port_list_lock, flags);
99 list_for_each_entry(port, &adapter->port_list, list)
100 if (port->d_id == d_id) {
101 zfcp_erp_port_reopen(port, 0, "fssrpc1", req);
104 read_unlock_irqrestore(&adapter->port_list_lock, flags);
107 static void zfcp_fsf_link_down_info_eval(struct zfcp_fsf_req *req,
108 struct fsf_link_down_info *link_down)
110 struct zfcp_adapter *adapter = req->adapter;
112 if (atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED)
115 atomic_set_mask(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED, &adapter->status);
117 zfcp_scsi_schedule_rports_block(adapter);
122 switch (link_down->error_code) {
123 case FSF_PSQ_LINK_NO_LIGHT:
124 dev_warn(&req->adapter->ccw_device->dev,
125 "There is no light signal from the local "
126 "fibre channel cable\n");
128 case FSF_PSQ_LINK_WRAP_PLUG:
129 dev_warn(&req->adapter->ccw_device->dev,
130 "There is a wrap plug instead of a fibre "
133 case FSF_PSQ_LINK_NO_FCP:
134 dev_warn(&req->adapter->ccw_device->dev,
135 "The adjacent fibre channel node does not "
138 case FSF_PSQ_LINK_FIRMWARE_UPDATE:
139 dev_warn(&req->adapter->ccw_device->dev,
140 "The FCP device is suspended because of a "
141 "firmware update\n");
143 case FSF_PSQ_LINK_INVALID_WWPN:
144 dev_warn(&req->adapter->ccw_device->dev,
145 "The FCP device detected a WWPN that is "
146 "duplicate or not valid\n");
148 case FSF_PSQ_LINK_NO_NPIV_SUPPORT:
149 dev_warn(&req->adapter->ccw_device->dev,
150 "The fibre channel fabric does not support NPIV\n");
152 case FSF_PSQ_LINK_NO_FCP_RESOURCES:
153 dev_warn(&req->adapter->ccw_device->dev,
154 "The FCP adapter cannot support more NPIV ports\n");
156 case FSF_PSQ_LINK_NO_FABRIC_RESOURCES:
157 dev_warn(&req->adapter->ccw_device->dev,
158 "The adjacent switch cannot support "
159 "more NPIV ports\n");
161 case FSF_PSQ_LINK_FABRIC_LOGIN_UNABLE:
162 dev_warn(&req->adapter->ccw_device->dev,
163 "The FCP adapter could not log in to the "
164 "fibre channel fabric\n");
166 case FSF_PSQ_LINK_WWPN_ASSIGNMENT_CORRUPTED:
167 dev_warn(&req->adapter->ccw_device->dev,
168 "The WWPN assignment file on the FCP adapter "
169 "has been damaged\n");
171 case FSF_PSQ_LINK_MODE_TABLE_CURRUPTED:
172 dev_warn(&req->adapter->ccw_device->dev,
173 "The mode table on the FCP adapter "
174 "has been damaged\n");
176 case FSF_PSQ_LINK_NO_WWPN_ASSIGNMENT:
177 dev_warn(&req->adapter->ccw_device->dev,
178 "All NPIV ports on the FCP adapter have "
182 dev_warn(&req->adapter->ccw_device->dev,
183 "The link between the FCP adapter and "
184 "the FC fabric is down\n");
187 zfcp_erp_set_adapter_status(adapter, ZFCP_STATUS_COMMON_ERP_FAILED);
190 static void zfcp_fsf_status_read_link_down(struct zfcp_fsf_req *req)
192 struct fsf_status_read_buffer *sr_buf = req->data;
193 struct fsf_link_down_info *ldi =
194 (struct fsf_link_down_info *) &sr_buf->payload;
196 switch (sr_buf->status_subtype) {
197 case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK:
198 zfcp_fsf_link_down_info_eval(req, ldi);
200 case FSF_STATUS_READ_SUB_FDISC_FAILED:
201 zfcp_fsf_link_down_info_eval(req, ldi);
203 case FSF_STATUS_READ_SUB_FIRMWARE_UPDATE:
204 zfcp_fsf_link_down_info_eval(req, NULL);
208 static void zfcp_fsf_status_read_handler(struct zfcp_fsf_req *req)
210 struct zfcp_adapter *adapter = req->adapter;
211 struct fsf_status_read_buffer *sr_buf = req->data;
213 if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) {
214 zfcp_dbf_hba_fsf_unsol("dism", adapter->dbf, sr_buf);
215 mempool_free(sr_buf, adapter->pool.status_read_data);
216 zfcp_fsf_req_free(req);
220 zfcp_dbf_hba_fsf_unsol("read", adapter->dbf, sr_buf);
222 switch (sr_buf->status_type) {
223 case FSF_STATUS_READ_PORT_CLOSED:
224 zfcp_fsf_status_read_port_closed(req);
226 case FSF_STATUS_READ_INCOMING_ELS:
227 zfcp_fc_incoming_els(req);
229 case FSF_STATUS_READ_SENSE_DATA_AVAIL:
231 case FSF_STATUS_READ_BIT_ERROR_THRESHOLD:
232 dev_warn(&adapter->ccw_device->dev,
233 "The error threshold for checksum statistics "
234 "has been exceeded\n");
235 zfcp_dbf_hba_berr(adapter->dbf, req);
237 case FSF_STATUS_READ_LINK_DOWN:
238 zfcp_fsf_status_read_link_down(req);
239 zfcp_fc_enqueue_event(adapter, FCH_EVT_LINKDOWN, 0);
241 case FSF_STATUS_READ_LINK_UP:
242 dev_info(&adapter->ccw_device->dev,
243 "The local link has been restored\n");
244 /* All ports should be marked as ready to run again */
245 zfcp_erp_set_adapter_status(adapter,
246 ZFCP_STATUS_COMMON_RUNNING);
247 zfcp_erp_adapter_reopen(adapter,
248 ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED |
249 ZFCP_STATUS_COMMON_ERP_FAILED,
251 zfcp_fc_enqueue_event(adapter, FCH_EVT_LINKUP, 0);
254 case FSF_STATUS_READ_NOTIFICATION_LOST:
255 if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_ACT_UPDATED)
256 zfcp_cfdc_adapter_access_changed(adapter);
257 if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_INCOMING_ELS)
258 queue_work(adapter->work_queue, &adapter->scan_work);
260 case FSF_STATUS_READ_CFDC_UPDATED:
261 zfcp_cfdc_adapter_access_changed(adapter);
263 case FSF_STATUS_READ_FEATURE_UPDATE_ALERT:
264 adapter->adapter_features = sr_buf->payload.word[0];
268 mempool_free(sr_buf, adapter->pool.status_read_data);
269 zfcp_fsf_req_free(req);
271 atomic_inc(&adapter->stat_miss);
272 queue_work(adapter->work_queue, &adapter->stat_work);
275 static void zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req *req)
277 switch (req->qtcb->header.fsf_status_qual.word[0]) {
278 case FSF_SQ_FCP_RSP_AVAILABLE:
279 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
280 case FSF_SQ_NO_RETRY_POSSIBLE:
281 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
283 case FSF_SQ_COMMAND_ABORTED:
285 case FSF_SQ_NO_RECOM:
286 dev_err(&req->adapter->ccw_device->dev,
287 "The FCP adapter reported a problem "
288 "that cannot be recovered\n");
289 zfcp_qdio_siosl(req->adapter);
290 zfcp_erp_adapter_shutdown(req->adapter, 0, "fsfsqe1", req);
293 /* all non-return stats set FSFREQ_ERROR*/
294 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
297 static void zfcp_fsf_fsfstatus_eval(struct zfcp_fsf_req *req)
299 if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR))
302 switch (req->qtcb->header.fsf_status) {
303 case FSF_UNKNOWN_COMMAND:
304 dev_err(&req->adapter->ccw_device->dev,
305 "The FCP adapter does not recognize the command 0x%x\n",
306 req->qtcb->header.fsf_command);
307 zfcp_erp_adapter_shutdown(req->adapter, 0, "fsfse_1", req);
308 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
310 case FSF_ADAPTER_STATUS_AVAILABLE:
311 zfcp_fsf_fsfstatus_qual_eval(req);
316 static void zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *req)
318 struct zfcp_adapter *adapter = req->adapter;
319 struct fsf_qtcb *qtcb = req->qtcb;
320 union fsf_prot_status_qual *psq = &qtcb->prefix.prot_status_qual;
322 zfcp_dbf_hba_fsf_response(req);
324 if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) {
325 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
329 switch (qtcb->prefix.prot_status) {
331 case FSF_PROT_FSF_STATUS_PRESENTED:
333 case FSF_PROT_QTCB_VERSION_ERROR:
334 dev_err(&adapter->ccw_device->dev,
335 "QTCB version 0x%x not supported by FCP adapter "
336 "(0x%x to 0x%x)\n", FSF_QTCB_CURRENT_VERSION,
337 psq->word[0], psq->word[1]);
338 zfcp_erp_adapter_shutdown(adapter, 0, "fspse_1", req);
340 case FSF_PROT_ERROR_STATE:
341 case FSF_PROT_SEQ_NUMB_ERROR:
342 zfcp_erp_adapter_reopen(adapter, 0, "fspse_2", req);
343 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
345 case FSF_PROT_UNSUPP_QTCB_TYPE:
346 dev_err(&adapter->ccw_device->dev,
347 "The QTCB type is not supported by the FCP adapter\n");
348 zfcp_erp_adapter_shutdown(adapter, 0, "fspse_3", req);
350 case FSF_PROT_HOST_CONNECTION_INITIALIZING:
351 atomic_set_mask(ZFCP_STATUS_ADAPTER_HOST_CON_INIT,
354 case FSF_PROT_DUPLICATE_REQUEST_ID:
355 dev_err(&adapter->ccw_device->dev,
356 "0x%Lx is an ambiguous request identifier\n",
357 (unsigned long long)qtcb->bottom.support.req_handle);
358 zfcp_erp_adapter_shutdown(adapter, 0, "fspse_4", req);
360 case FSF_PROT_LINK_DOWN:
361 zfcp_fsf_link_down_info_eval(req, &psq->link_down_info);
362 /* go through reopen to flush pending requests */
363 zfcp_erp_adapter_reopen(adapter, 0, "fspse_6", req);
365 case FSF_PROT_REEST_QUEUE:
366 /* All ports should be marked as ready to run again */
367 zfcp_erp_set_adapter_status(adapter,
368 ZFCP_STATUS_COMMON_RUNNING);
369 zfcp_erp_adapter_reopen(adapter,
370 ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED |
371 ZFCP_STATUS_COMMON_ERP_FAILED,
375 dev_err(&adapter->ccw_device->dev,
376 "0x%x is not a valid transfer protocol status\n",
377 qtcb->prefix.prot_status);
378 zfcp_qdio_siosl(adapter);
379 zfcp_erp_adapter_shutdown(adapter, 0, "fspse_9", req);
381 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
385 * zfcp_fsf_req_complete - process completion of a FSF request
386 * @fsf_req: The FSF request that has been completed.
388 * When a request has been completed either from the FCP adapter,
389 * or it has been dismissed due to a queue shutdown, this function
390 * is called to process the completion status and trigger further
391 * events related to the FSF request.
393 static void zfcp_fsf_req_complete(struct zfcp_fsf_req *req)
395 if (unlikely(req->fsf_command == FSF_QTCB_UNSOLICITED_STATUS)) {
396 zfcp_fsf_status_read_handler(req);
400 del_timer(&req->timer);
401 zfcp_fsf_protstatus_eval(req);
402 zfcp_fsf_fsfstatus_eval(req);
406 zfcp_erp_notify(req->erp_action, 0);
408 if (likely(req->status & ZFCP_STATUS_FSFREQ_CLEANUP))
409 zfcp_fsf_req_free(req);
411 complete(&req->completion);
415 * zfcp_fsf_req_dismiss_all - dismiss all fsf requests
416 * @adapter: pointer to struct zfcp_adapter
418 * Never ever call this without shutting down the adapter first.
419 * Otherwise the adapter would continue using and corrupting s390 storage.
420 * Included BUG_ON() call to ensure this is done.
421 * ERP is supposed to be the only user of this function.
423 void zfcp_fsf_req_dismiss_all(struct zfcp_adapter *adapter)
425 struct zfcp_fsf_req *req, *tmp;
426 LIST_HEAD(remove_queue);
428 BUG_ON(atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP);
429 zfcp_reqlist_move(adapter->req_list, &remove_queue);
431 list_for_each_entry_safe(req, tmp, &remove_queue, list) {
432 list_del(&req->list);
433 req->status |= ZFCP_STATUS_FSFREQ_DISMISSED;
434 zfcp_fsf_req_complete(req);
438 static int zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req *req)
440 struct fsf_qtcb_bottom_config *bottom = &req->qtcb->bottom.config;
441 struct zfcp_adapter *adapter = req->adapter;
442 struct Scsi_Host *shost = adapter->scsi_host;
443 struct fc_els_flogi *nsp, *plogi;
445 /* adjust pointers for missing command code */
446 nsp = (struct fc_els_flogi *) ((u8 *)&bottom->nport_serv_param
448 plogi = (struct fc_els_flogi *) ((u8 *)&bottom->plogi_payload
452 memcpy(req->data, bottom, sizeof(*bottom));
454 fc_host_port_name(shost) = nsp->fl_wwpn;
455 fc_host_node_name(shost) = nsp->fl_wwnn;
456 fc_host_port_id(shost) = ntoh24(bottom->s_id);
457 fc_host_speed(shost) = bottom->fc_link_speed;
458 fc_host_supported_classes(shost) = FC_COS_CLASS2 | FC_COS_CLASS3;
460 adapter->hydra_version = bottom->adapter_type;
461 adapter->timer_ticks = bottom->timer_interval & ZFCP_FSF_TIMER_INT_MASK;
462 adapter->stat_read_buf_num = max(bottom->status_read_buf_num,
463 (u16)FSF_STATUS_READS_RECOM);
465 if (fc_host_permanent_port_name(shost) == -1)
466 fc_host_permanent_port_name(shost) = fc_host_port_name(shost);
468 switch (bottom->fc_topology) {
470 adapter->peer_d_id = ntoh24(bottom->peer_d_id);
471 adapter->peer_wwpn = plogi->fl_wwpn;
472 adapter->peer_wwnn = plogi->fl_wwnn;
473 fc_host_port_type(shost) = FC_PORTTYPE_PTP;
475 case FSF_TOPO_FABRIC:
476 fc_host_port_type(shost) = FC_PORTTYPE_NPORT;
479 fc_host_port_type(shost) = FC_PORTTYPE_NLPORT;
482 dev_err(&adapter->ccw_device->dev,
483 "Unknown or unsupported arbitrated loop "
484 "fibre channel topology detected\n");
485 zfcp_erp_adapter_shutdown(adapter, 0, "fsece_1", req);
489 zfcp_scsi_set_prot(adapter);
494 static void zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *req)
496 struct zfcp_adapter *adapter = req->adapter;
497 struct fsf_qtcb *qtcb = req->qtcb;
498 struct fsf_qtcb_bottom_config *bottom = &qtcb->bottom.config;
499 struct Scsi_Host *shost = adapter->scsi_host;
501 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
504 adapter->fsf_lic_version = bottom->lic_version;
505 adapter->adapter_features = bottom->adapter_features;
506 adapter->connection_features = bottom->connection_features;
507 adapter->peer_wwpn = 0;
508 adapter->peer_wwnn = 0;
509 adapter->peer_d_id = 0;
511 switch (qtcb->header.fsf_status) {
513 if (zfcp_fsf_exchange_config_evaluate(req))
516 if (bottom->max_qtcb_size < sizeof(struct fsf_qtcb)) {
517 dev_err(&adapter->ccw_device->dev,
518 "FCP adapter maximum QTCB size (%d bytes) "
520 bottom->max_qtcb_size);
521 zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh1", req);
524 atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK,
527 case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE:
528 fc_host_node_name(shost) = 0;
529 fc_host_port_name(shost) = 0;
530 fc_host_port_id(shost) = 0;
531 fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN;
532 fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN;
533 adapter->hydra_version = 0;
535 atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK,
538 zfcp_fsf_link_down_info_eval(req,
539 &qtcb->header.fsf_status_qual.link_down_info);
542 zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh3", req);
546 if (adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT) {
547 adapter->hardware_version = bottom->hardware_version;
548 memcpy(fc_host_serial_number(shost), bottom->serial_number,
549 min(FC_SERIAL_NUMBER_SIZE, 17));
550 EBCASC(fc_host_serial_number(shost),
551 min(FC_SERIAL_NUMBER_SIZE, 17));
554 if (FSF_QTCB_CURRENT_VERSION < bottom->low_qtcb_version) {
555 dev_err(&adapter->ccw_device->dev,
556 "The FCP adapter only supports newer "
557 "control block versions\n");
558 zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh4", req);
561 if (FSF_QTCB_CURRENT_VERSION > bottom->high_qtcb_version) {
562 dev_err(&adapter->ccw_device->dev,
563 "The FCP adapter only supports older "
564 "control block versions\n");
565 zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh5", req);
569 static void zfcp_fsf_exchange_port_evaluate(struct zfcp_fsf_req *req)
571 struct zfcp_adapter *adapter = req->adapter;
572 struct fsf_qtcb_bottom_port *bottom = &req->qtcb->bottom.port;
573 struct Scsi_Host *shost = adapter->scsi_host;
576 memcpy(req->data, bottom, sizeof(*bottom));
578 if (adapter->connection_features & FSF_FEATURE_NPIV_MODE) {
579 fc_host_permanent_port_name(shost) = bottom->wwpn;
580 fc_host_port_type(shost) = FC_PORTTYPE_NPIV;
582 fc_host_permanent_port_name(shost) = fc_host_port_name(shost);
583 fc_host_maxframe_size(shost) = bottom->maximum_frame_size;
584 fc_host_supported_speeds(shost) = bottom->supported_speed;
585 memcpy(fc_host_supported_fc4s(shost), bottom->supported_fc4_types,
587 memcpy(fc_host_active_fc4s(shost), bottom->active_fc4_types,
591 static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *req)
593 struct fsf_qtcb *qtcb = req->qtcb;
595 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
598 switch (qtcb->header.fsf_status) {
600 zfcp_fsf_exchange_port_evaluate(req);
602 case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE:
603 zfcp_fsf_exchange_port_evaluate(req);
604 zfcp_fsf_link_down_info_eval(req,
605 &qtcb->header.fsf_status_qual.link_down_info);
610 static struct zfcp_fsf_req *zfcp_fsf_alloc(mempool_t *pool)
612 struct zfcp_fsf_req *req;
615 req = mempool_alloc(pool, GFP_ATOMIC);
617 req = kmalloc(sizeof(*req), GFP_ATOMIC);
622 memset(req, 0, sizeof(*req));
627 static struct fsf_qtcb *zfcp_qtcb_alloc(mempool_t *pool)
629 struct fsf_qtcb *qtcb;
632 qtcb = mempool_alloc(pool, GFP_ATOMIC);
634 qtcb = kmem_cache_alloc(zfcp_data.qtcb_cache, GFP_ATOMIC);
639 memset(qtcb, 0, sizeof(*qtcb));
643 static struct zfcp_fsf_req *zfcp_fsf_req_create(struct zfcp_qdio *qdio,
644 u32 fsf_cmd, u32 sbtype,
647 struct zfcp_adapter *adapter = qdio->adapter;
648 struct zfcp_fsf_req *req = zfcp_fsf_alloc(pool);
651 return ERR_PTR(-ENOMEM);
653 if (adapter->req_no == 0)
656 INIT_LIST_HEAD(&req->list);
657 init_timer(&req->timer);
658 init_completion(&req->completion);
660 req->adapter = adapter;
661 req->fsf_command = fsf_cmd;
662 req->req_id = adapter->req_no;
664 if (likely(fsf_cmd != FSF_QTCB_UNSOLICITED_STATUS)) {
666 req->qtcb = zfcp_qtcb_alloc(adapter->pool.qtcb_pool);
668 req->qtcb = zfcp_qtcb_alloc(NULL);
670 if (unlikely(!req->qtcb)) {
671 zfcp_fsf_req_free(req);
672 return ERR_PTR(-ENOMEM);
675 req->seq_no = adapter->fsf_req_seq_no;
676 req->qtcb->prefix.req_seq_no = adapter->fsf_req_seq_no;
677 req->qtcb->prefix.req_id = req->req_id;
678 req->qtcb->prefix.ulp_info = 26;
679 req->qtcb->prefix.qtcb_type = fsf_qtcb_type[req->fsf_command];
680 req->qtcb->prefix.qtcb_version = FSF_QTCB_CURRENT_VERSION;
681 req->qtcb->header.req_handle = req->req_id;
682 req->qtcb->header.fsf_command = req->fsf_command;
685 zfcp_qdio_req_init(adapter->qdio, &req->qdio_req, req->req_id, sbtype,
686 req->qtcb, sizeof(struct fsf_qtcb));
691 static int zfcp_fsf_req_send(struct zfcp_fsf_req *req)
693 struct zfcp_adapter *adapter = req->adapter;
694 struct zfcp_qdio *qdio = adapter->qdio;
695 int with_qtcb = (req->qtcb != NULL);
696 int req_id = req->req_id;
698 zfcp_reqlist_add(adapter->req_list, req);
700 req->qdio_req.qdio_outb_usage = atomic_read(&qdio->req_q_free);
701 req->issued = get_clock();
702 if (zfcp_qdio_send(qdio, &req->qdio_req)) {
703 del_timer(&req->timer);
704 /* lookup request again, list might have changed */
705 zfcp_reqlist_find_rm(adapter->req_list, req_id);
706 zfcp_erp_adapter_reopen(adapter, 0, "fsrs__1", req);
710 /* Don't increase for unsolicited status */
712 adapter->fsf_req_seq_no++;
719 * zfcp_fsf_status_read - send status read request
720 * @adapter: pointer to struct zfcp_adapter
721 * @req_flags: request flags
722 * Returns: 0 on success, ERROR otherwise
724 int zfcp_fsf_status_read(struct zfcp_qdio *qdio)
726 struct zfcp_adapter *adapter = qdio->adapter;
727 struct zfcp_fsf_req *req;
728 struct fsf_status_read_buffer *sr_buf;
731 spin_lock_irq(&qdio->req_q_lock);
732 if (zfcp_qdio_sbal_get(qdio))
735 req = zfcp_fsf_req_create(qdio, FSF_QTCB_UNSOLICITED_STATUS, 0,
736 adapter->pool.status_read_req);
738 retval = PTR_ERR(req);
742 sr_buf = mempool_alloc(adapter->pool.status_read_data, GFP_ATOMIC);
747 memset(sr_buf, 0, sizeof(*sr_buf));
750 zfcp_qdio_fill_next(qdio, &req->qdio_req, sr_buf, sizeof(*sr_buf));
751 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
753 retval = zfcp_fsf_req_send(req);
755 goto failed_req_send;
760 mempool_free(sr_buf, adapter->pool.status_read_data);
762 zfcp_fsf_req_free(req);
763 zfcp_dbf_hba_fsf_unsol("fail", adapter->dbf, NULL);
765 spin_unlock_irq(&qdio->req_q_lock);
769 static void zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req *req)
771 struct scsi_device *sdev = req->data;
772 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
773 union fsf_status_qual *fsq = &req->qtcb->header.fsf_status_qual;
775 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
778 switch (req->qtcb->header.fsf_status) {
779 case FSF_PORT_HANDLE_NOT_VALID:
780 if (fsq->word[0] == fsq->word[1]) {
781 zfcp_erp_adapter_reopen(zfcp_sdev->port->adapter, 0,
783 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
786 case FSF_LUN_HANDLE_NOT_VALID:
787 if (fsq->word[0] == fsq->word[1]) {
788 zfcp_erp_port_reopen(zfcp_sdev->port, 0, "fsafch2",
790 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
793 case FSF_FCP_COMMAND_DOES_NOT_EXIST:
794 req->status |= ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED;
797 zfcp_erp_set_port_status(zfcp_sdev->port,
798 ZFCP_STATUS_COMMON_ACCESS_BOXED);
799 zfcp_erp_port_reopen(zfcp_sdev->port,
800 ZFCP_STATUS_COMMON_ERP_FAILED, "fsafch3",
802 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
805 zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_ACCESS_BOXED);
806 zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED,
808 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
810 case FSF_ADAPTER_STATUS_AVAILABLE:
811 switch (fsq->word[0]) {
812 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
813 zfcp_fc_test_link(zfcp_sdev->port);
815 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
816 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
821 req->status |= ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED;
827 * zfcp_fsf_abort_fcp_cmnd - abort running SCSI command
828 * @scmnd: The SCSI command to abort
829 * Returns: pointer to struct zfcp_fsf_req
832 struct zfcp_fsf_req *zfcp_fsf_abort_fcp_cmnd(struct scsi_cmnd *scmnd)
834 struct zfcp_fsf_req *req = NULL;
835 struct scsi_device *sdev = scmnd->device;
836 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
837 struct zfcp_qdio *qdio = zfcp_sdev->port->adapter->qdio;
838 unsigned long old_req_id = (unsigned long) scmnd->host_scribble;
840 spin_lock_irq(&qdio->req_q_lock);
841 if (zfcp_qdio_sbal_get(qdio))
843 req = zfcp_fsf_req_create(qdio, FSF_QTCB_ABORT_FCP_CMND,
844 SBAL_FLAGS0_TYPE_READ,
845 qdio->adapter->pool.scsi_abort);
851 if (unlikely(!(atomic_read(&zfcp_sdev->status) &
852 ZFCP_STATUS_COMMON_UNBLOCKED)))
855 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
857 req->data = zfcp_sdev;
858 req->handler = zfcp_fsf_abort_fcp_command_handler;
859 req->qtcb->header.lun_handle = zfcp_sdev->lun_handle;
860 req->qtcb->header.port_handle = zfcp_sdev->port->handle;
861 req->qtcb->bottom.support.req_handle = (u64) old_req_id;
863 zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT);
864 if (!zfcp_fsf_req_send(req))
868 zfcp_fsf_req_free(req);
871 spin_unlock_irq(&qdio->req_q_lock);
875 static void zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *req)
877 struct zfcp_adapter *adapter = req->adapter;
878 struct zfcp_fsf_ct_els *ct = req->data;
879 struct fsf_qtcb_header *header = &req->qtcb->header;
881 ct->status = -EINVAL;
883 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
886 switch (header->fsf_status) {
888 zfcp_dbf_san_ct_response(req);
891 case FSF_SERVICE_CLASS_NOT_SUPPORTED:
892 zfcp_fsf_class_not_supp(req);
894 case FSF_ADAPTER_STATUS_AVAILABLE:
895 switch (header->fsf_status_qual.word[0]){
896 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
897 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
898 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
902 case FSF_ACCESS_DENIED:
905 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
907 case FSF_PORT_HANDLE_NOT_VALID:
908 zfcp_erp_adapter_reopen(adapter, 0, "fsscth1", req);
910 case FSF_GENERIC_COMMAND_REJECTED:
911 case FSF_PAYLOAD_SIZE_MISMATCH:
912 case FSF_REQUEST_SIZE_TOO_LARGE:
913 case FSF_RESPONSE_SIZE_TOO_LARGE:
914 case FSF_SBAL_MISMATCH:
915 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
921 ct->handler(ct->handler_data);
924 static void zfcp_fsf_setup_ct_els_unchained(struct zfcp_qdio *qdio,
925 struct zfcp_qdio_req *q_req,
926 struct scatterlist *sg_req,
927 struct scatterlist *sg_resp)
929 zfcp_qdio_fill_next(qdio, q_req, sg_virt(sg_req), sg_req->length);
930 zfcp_qdio_fill_next(qdio, q_req, sg_virt(sg_resp), sg_resp->length);
931 zfcp_qdio_set_sbale_last(qdio, q_req);
934 static int zfcp_fsf_setup_ct_els_sbals(struct zfcp_fsf_req *req,
935 struct scatterlist *sg_req,
936 struct scatterlist *sg_resp)
938 struct zfcp_adapter *adapter = req->adapter;
939 u32 feat = adapter->adapter_features;
942 if (!(feat & FSF_FEATURE_ELS_CT_CHAINED_SBALS)) {
943 if (!zfcp_qdio_sg_one_sbale(sg_req) ||
944 !zfcp_qdio_sg_one_sbale(sg_resp))
947 zfcp_fsf_setup_ct_els_unchained(adapter->qdio, &req->qdio_req,
952 /* use single, unchained SBAL if it can hold the request */
953 if (zfcp_qdio_sg_one_sbale(sg_req) && zfcp_qdio_sg_one_sbale(sg_resp)) {
954 zfcp_fsf_setup_ct_els_unchained(adapter->qdio, &req->qdio_req,
959 bytes = zfcp_qdio_sbals_from_sg(adapter->qdio, &req->qdio_req, sg_req);
962 zfcp_qdio_set_sbale_last(adapter->qdio, &req->qdio_req);
963 req->qtcb->bottom.support.req_buf_length = bytes;
964 zfcp_qdio_skip_to_last_sbale(&req->qdio_req);
966 bytes = zfcp_qdio_sbals_from_sg(adapter->qdio, &req->qdio_req,
968 req->qtcb->bottom.support.resp_buf_length = bytes;
971 zfcp_qdio_set_sbale_last(adapter->qdio, &req->qdio_req);
976 static int zfcp_fsf_setup_ct_els(struct zfcp_fsf_req *req,
977 struct scatterlist *sg_req,
978 struct scatterlist *sg_resp,
979 unsigned int timeout)
983 ret = zfcp_fsf_setup_ct_els_sbals(req, sg_req, sg_resp);
987 /* common settings for ct/gs and els requests */
989 timeout = 255; /* max value accepted by hardware */
990 req->qtcb->bottom.support.service_class = FSF_CLASS_3;
991 req->qtcb->bottom.support.timeout = timeout;
992 zfcp_fsf_start_timer(req, (timeout + 10) * HZ);
998 * zfcp_fsf_send_ct - initiate a Generic Service request (FC-GS)
999 * @ct: pointer to struct zfcp_send_ct with data for request
1000 * @pool: if non-null this mempool is used to allocate struct zfcp_fsf_req
1002 int zfcp_fsf_send_ct(struct zfcp_fc_wka_port *wka_port,
1003 struct zfcp_fsf_ct_els *ct, mempool_t *pool,
1004 unsigned int timeout)
1006 struct zfcp_qdio *qdio = wka_port->adapter->qdio;
1007 struct zfcp_fsf_req *req;
1010 spin_lock_irq(&qdio->req_q_lock);
1011 if (zfcp_qdio_sbal_get(qdio))
1014 req = zfcp_fsf_req_create(qdio, FSF_QTCB_SEND_GENERIC,
1015 SBAL_FLAGS0_TYPE_WRITE_READ, pool);
1022 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1023 ret = zfcp_fsf_setup_ct_els(req, ct->req, ct->resp, timeout);
1027 req->handler = zfcp_fsf_send_ct_handler;
1028 req->qtcb->header.port_handle = wka_port->handle;
1031 zfcp_dbf_san_ct_request(req, wka_port->d_id);
1033 ret = zfcp_fsf_req_send(req);
1040 zfcp_fsf_req_free(req);
1042 spin_unlock_irq(&qdio->req_q_lock);
1046 static void zfcp_fsf_send_els_handler(struct zfcp_fsf_req *req)
1048 struct zfcp_fsf_ct_els *send_els = req->data;
1049 struct zfcp_port *port = send_els->port;
1050 struct fsf_qtcb_header *header = &req->qtcb->header;
1052 send_els->status = -EINVAL;
1054 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1055 goto skip_fsfstatus;
1057 switch (header->fsf_status) {
1059 zfcp_dbf_san_els_response(req);
1060 send_els->status = 0;
1062 case FSF_SERVICE_CLASS_NOT_SUPPORTED:
1063 zfcp_fsf_class_not_supp(req);
1065 case FSF_ADAPTER_STATUS_AVAILABLE:
1066 switch (header->fsf_status_qual.word[0]){
1067 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1068 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1069 case FSF_SQ_RETRY_IF_POSSIBLE:
1070 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1074 case FSF_ELS_COMMAND_REJECTED:
1075 case FSF_PAYLOAD_SIZE_MISMATCH:
1076 case FSF_REQUEST_SIZE_TOO_LARGE:
1077 case FSF_RESPONSE_SIZE_TOO_LARGE:
1079 case FSF_ACCESS_DENIED:
1081 zfcp_cfdc_port_denied(port, &header->fsf_status_qual);
1082 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1085 case FSF_SBAL_MISMATCH:
1086 /* should never occure, avoided in zfcp_fsf_send_els */
1089 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1093 if (send_els->handler)
1094 send_els->handler(send_els->handler_data);
1098 * zfcp_fsf_send_els - initiate an ELS command (FC-FS)
1099 * @els: pointer to struct zfcp_send_els with data for the command
1101 int zfcp_fsf_send_els(struct zfcp_adapter *adapter, u32 d_id,
1102 struct zfcp_fsf_ct_els *els, unsigned int timeout)
1104 struct zfcp_fsf_req *req;
1105 struct zfcp_qdio *qdio = adapter->qdio;
1108 spin_lock_irq(&qdio->req_q_lock);
1109 if (zfcp_qdio_sbal_get(qdio))
1112 req = zfcp_fsf_req_create(qdio, FSF_QTCB_SEND_ELS,
1113 SBAL_FLAGS0_TYPE_WRITE_READ, NULL);
1120 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1122 zfcp_qdio_sbal_limit(qdio, &req->qdio_req, 2);
1124 ret = zfcp_fsf_setup_ct_els(req, els->req, els->resp, timeout);
1129 hton24(req->qtcb->bottom.support.d_id, d_id);
1130 req->handler = zfcp_fsf_send_els_handler;
1133 zfcp_dbf_san_els_request(req);
1135 ret = zfcp_fsf_req_send(req);
1142 zfcp_fsf_req_free(req);
1144 spin_unlock_irq(&qdio->req_q_lock);
1148 int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action)
1150 struct zfcp_fsf_req *req;
1151 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1154 spin_lock_irq(&qdio->req_q_lock);
1155 if (zfcp_qdio_sbal_get(qdio))
1158 req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_CONFIG_DATA,
1159 SBAL_FLAGS0_TYPE_READ,
1160 qdio->adapter->pool.erp_req);
1163 retval = PTR_ERR(req);
1167 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1168 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1170 req->qtcb->bottom.config.feature_selection =
1172 FSF_FEATURE_LUN_SHARING |
1173 FSF_FEATURE_NOTIFICATION_LOST |
1174 FSF_FEATURE_UPDATE_ALERT;
1175 req->erp_action = erp_action;
1176 req->handler = zfcp_fsf_exchange_config_data_handler;
1177 erp_action->fsf_req_id = req->req_id;
1179 zfcp_fsf_start_erp_timer(req);
1180 retval = zfcp_fsf_req_send(req);
1182 zfcp_fsf_req_free(req);
1183 erp_action->fsf_req_id = 0;
1186 spin_unlock_irq(&qdio->req_q_lock);
1190 int zfcp_fsf_exchange_config_data_sync(struct zfcp_qdio *qdio,
1191 struct fsf_qtcb_bottom_config *data)
1193 struct zfcp_fsf_req *req = NULL;
1196 spin_lock_irq(&qdio->req_q_lock);
1197 if (zfcp_qdio_sbal_get(qdio))
1200 req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_CONFIG_DATA,
1201 SBAL_FLAGS0_TYPE_READ, NULL);
1204 retval = PTR_ERR(req);
1208 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1209 req->handler = zfcp_fsf_exchange_config_data_handler;
1211 req->qtcb->bottom.config.feature_selection =
1213 FSF_FEATURE_LUN_SHARING |
1214 FSF_FEATURE_NOTIFICATION_LOST |
1215 FSF_FEATURE_UPDATE_ALERT;
1220 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1221 retval = zfcp_fsf_req_send(req);
1222 spin_unlock_irq(&qdio->req_q_lock);
1224 wait_for_completion(&req->completion);
1226 zfcp_fsf_req_free(req);
1230 spin_unlock_irq(&qdio->req_q_lock);
1235 * zfcp_fsf_exchange_port_data - request information about local port
1236 * @erp_action: ERP action for the adapter for which port data is requested
1237 * Returns: 0 on success, error otherwise
1239 int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action)
1241 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1242 struct zfcp_fsf_req *req;
1245 if (!(qdio->adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT))
1248 spin_lock_irq(&qdio->req_q_lock);
1249 if (zfcp_qdio_sbal_get(qdio))
1252 req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_PORT_DATA,
1253 SBAL_FLAGS0_TYPE_READ,
1254 qdio->adapter->pool.erp_req);
1257 retval = PTR_ERR(req);
1261 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1262 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1264 req->handler = zfcp_fsf_exchange_port_data_handler;
1265 req->erp_action = erp_action;
1266 erp_action->fsf_req_id = req->req_id;
1268 zfcp_fsf_start_erp_timer(req);
1269 retval = zfcp_fsf_req_send(req);
1271 zfcp_fsf_req_free(req);
1272 erp_action->fsf_req_id = 0;
1275 spin_unlock_irq(&qdio->req_q_lock);
1280 * zfcp_fsf_exchange_port_data_sync - request information about local port
1281 * @qdio: pointer to struct zfcp_qdio
1282 * @data: pointer to struct fsf_qtcb_bottom_port
1283 * Returns: 0 on success, error otherwise
1285 int zfcp_fsf_exchange_port_data_sync(struct zfcp_qdio *qdio,
1286 struct fsf_qtcb_bottom_port *data)
1288 struct zfcp_fsf_req *req = NULL;
1291 if (!(qdio->adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT))
1294 spin_lock_irq(&qdio->req_q_lock);
1295 if (zfcp_qdio_sbal_get(qdio))
1298 req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_PORT_DATA,
1299 SBAL_FLAGS0_TYPE_READ, NULL);
1302 retval = PTR_ERR(req);
1309 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1311 req->handler = zfcp_fsf_exchange_port_data_handler;
1312 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1313 retval = zfcp_fsf_req_send(req);
1314 spin_unlock_irq(&qdio->req_q_lock);
1317 wait_for_completion(&req->completion);
1319 zfcp_fsf_req_free(req);
1324 spin_unlock_irq(&qdio->req_q_lock);
1328 static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req *req)
1330 struct zfcp_port *port = req->data;
1331 struct fsf_qtcb_header *header = &req->qtcb->header;
1332 struct fc_els_flogi *plogi;
1334 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1337 switch (header->fsf_status) {
1338 case FSF_PORT_ALREADY_OPEN:
1340 case FSF_ACCESS_DENIED:
1341 zfcp_cfdc_port_denied(port, &header->fsf_status_qual);
1342 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1344 case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED:
1345 dev_warn(&req->adapter->ccw_device->dev,
1346 "Not enough FCP adapter resources to open "
1347 "remote port 0x%016Lx\n",
1348 (unsigned long long)port->wwpn);
1349 zfcp_erp_set_port_status(port,
1350 ZFCP_STATUS_COMMON_ERP_FAILED);
1351 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1353 case FSF_ADAPTER_STATUS_AVAILABLE:
1354 switch (header->fsf_status_qual.word[0]) {
1355 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1356 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1357 case FSF_SQ_NO_RETRY_POSSIBLE:
1358 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1363 port->handle = header->port_handle;
1364 atomic_set_mask(ZFCP_STATUS_COMMON_OPEN |
1365 ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
1366 atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED |
1367 ZFCP_STATUS_COMMON_ACCESS_BOXED,
1369 /* check whether D_ID has changed during open */
1371 * FIXME: This check is not airtight, as the FCP channel does
1372 * not monitor closures of target port connections caused on
1373 * the remote side. Thus, they might miss out on invalidating
1374 * locally cached WWPNs (and other N_Port parameters) of gone
1375 * target ports. So, our heroic attempt to make things safe
1376 * could be undermined by 'open port' response data tagged with
1377 * obsolete WWPNs. Another reason to monitor potential
1378 * connection closures ourself at least (by interpreting
1379 * incoming ELS' and unsolicited status). It just crosses my
1380 * mind that one should be able to cross-check by means of
1381 * another GID_PN straight after a port has been opened.
1382 * Alternately, an ADISC/PDISC ELS should suffice, as well.
1384 plogi = (struct fc_els_flogi *) req->qtcb->bottom.support.els;
1385 if (req->qtcb->bottom.support.els1_length >=
1387 zfcp_fc_plogi_evaluate(port, plogi);
1389 case FSF_UNKNOWN_OP_SUBTYPE:
1390 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1395 put_device(&port->dev);
1399 * zfcp_fsf_open_port - create and send open port request
1400 * @erp_action: pointer to struct zfcp_erp_action
1401 * Returns: 0 on success, error otherwise
1403 int zfcp_fsf_open_port(struct zfcp_erp_action *erp_action)
1405 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1406 struct zfcp_port *port = erp_action->port;
1407 struct zfcp_fsf_req *req;
1410 spin_lock_irq(&qdio->req_q_lock);
1411 if (zfcp_qdio_sbal_get(qdio))
1414 req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_PORT_WITH_DID,
1415 SBAL_FLAGS0_TYPE_READ,
1416 qdio->adapter->pool.erp_req);
1419 retval = PTR_ERR(req);
1423 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1424 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1426 req->handler = zfcp_fsf_open_port_handler;
1427 hton24(req->qtcb->bottom.support.d_id, port->d_id);
1429 req->erp_action = erp_action;
1430 erp_action->fsf_req_id = req->req_id;
1431 get_device(&port->dev);
1433 zfcp_fsf_start_erp_timer(req);
1434 retval = zfcp_fsf_req_send(req);
1436 zfcp_fsf_req_free(req);
1437 erp_action->fsf_req_id = 0;
1438 put_device(&port->dev);
1441 spin_unlock_irq(&qdio->req_q_lock);
1445 static void zfcp_fsf_close_port_handler(struct zfcp_fsf_req *req)
1447 struct zfcp_port *port = req->data;
1449 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1452 switch (req->qtcb->header.fsf_status) {
1453 case FSF_PORT_HANDLE_NOT_VALID:
1454 zfcp_erp_adapter_reopen(port->adapter, 0, "fscph_1", req);
1455 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1457 case FSF_ADAPTER_STATUS_AVAILABLE:
1460 zfcp_erp_clear_port_status(port, ZFCP_STATUS_COMMON_OPEN);
1466 * zfcp_fsf_close_port - create and send close port request
1467 * @erp_action: pointer to struct zfcp_erp_action
1468 * Returns: 0 on success, error otherwise
1470 int zfcp_fsf_close_port(struct zfcp_erp_action *erp_action)
1472 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1473 struct zfcp_fsf_req *req;
1476 spin_lock_irq(&qdio->req_q_lock);
1477 if (zfcp_qdio_sbal_get(qdio))
1480 req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PORT,
1481 SBAL_FLAGS0_TYPE_READ,
1482 qdio->adapter->pool.erp_req);
1485 retval = PTR_ERR(req);
1489 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1490 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1492 req->handler = zfcp_fsf_close_port_handler;
1493 req->data = erp_action->port;
1494 req->erp_action = erp_action;
1495 req->qtcb->header.port_handle = erp_action->port->handle;
1496 erp_action->fsf_req_id = req->req_id;
1498 zfcp_fsf_start_erp_timer(req);
1499 retval = zfcp_fsf_req_send(req);
1501 zfcp_fsf_req_free(req);
1502 erp_action->fsf_req_id = 0;
1505 spin_unlock_irq(&qdio->req_q_lock);
1509 static void zfcp_fsf_open_wka_port_handler(struct zfcp_fsf_req *req)
1511 struct zfcp_fc_wka_port *wka_port = req->data;
1512 struct fsf_qtcb_header *header = &req->qtcb->header;
1514 if (req->status & ZFCP_STATUS_FSFREQ_ERROR) {
1515 wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE;
1519 switch (header->fsf_status) {
1520 case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED:
1521 dev_warn(&req->adapter->ccw_device->dev,
1522 "Opening WKA port 0x%x failed\n", wka_port->d_id);
1524 case FSF_ADAPTER_STATUS_AVAILABLE:
1525 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1527 case FSF_ACCESS_DENIED:
1528 wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE;
1531 wka_port->handle = header->port_handle;
1533 case FSF_PORT_ALREADY_OPEN:
1534 wka_port->status = ZFCP_FC_WKA_PORT_ONLINE;
1537 wake_up(&wka_port->completion_wq);
1541 * zfcp_fsf_open_wka_port - create and send open wka-port request
1542 * @wka_port: pointer to struct zfcp_fc_wka_port
1543 * Returns: 0 on success, error otherwise
1545 int zfcp_fsf_open_wka_port(struct zfcp_fc_wka_port *wka_port)
1547 struct zfcp_qdio *qdio = wka_port->adapter->qdio;
1548 struct zfcp_fsf_req *req;
1551 spin_lock_irq(&qdio->req_q_lock);
1552 if (zfcp_qdio_sbal_get(qdio))
1555 req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_PORT_WITH_DID,
1556 SBAL_FLAGS0_TYPE_READ,
1557 qdio->adapter->pool.erp_req);
1559 if (unlikely(IS_ERR(req))) {
1560 retval = PTR_ERR(req);
1564 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1565 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1567 req->handler = zfcp_fsf_open_wka_port_handler;
1568 hton24(req->qtcb->bottom.support.d_id, wka_port->d_id);
1569 req->data = wka_port;
1571 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1572 retval = zfcp_fsf_req_send(req);
1574 zfcp_fsf_req_free(req);
1576 spin_unlock_irq(&qdio->req_q_lock);
1580 static void zfcp_fsf_close_wka_port_handler(struct zfcp_fsf_req *req)
1582 struct zfcp_fc_wka_port *wka_port = req->data;
1584 if (req->qtcb->header.fsf_status == FSF_PORT_HANDLE_NOT_VALID) {
1585 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1586 zfcp_erp_adapter_reopen(wka_port->adapter, 0, "fscwph1", req);
1589 wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE;
1590 wake_up(&wka_port->completion_wq);
1594 * zfcp_fsf_close_wka_port - create and send close wka port request
1595 * @wka_port: WKA port to open
1596 * Returns: 0 on success, error otherwise
1598 int zfcp_fsf_close_wka_port(struct zfcp_fc_wka_port *wka_port)
1600 struct zfcp_qdio *qdio = wka_port->adapter->qdio;
1601 struct zfcp_fsf_req *req;
1604 spin_lock_irq(&qdio->req_q_lock);
1605 if (zfcp_qdio_sbal_get(qdio))
1608 req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PORT,
1609 SBAL_FLAGS0_TYPE_READ,
1610 qdio->adapter->pool.erp_req);
1612 if (unlikely(IS_ERR(req))) {
1613 retval = PTR_ERR(req);
1617 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1618 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1620 req->handler = zfcp_fsf_close_wka_port_handler;
1621 req->data = wka_port;
1622 req->qtcb->header.port_handle = wka_port->handle;
1624 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1625 retval = zfcp_fsf_req_send(req);
1627 zfcp_fsf_req_free(req);
1629 spin_unlock_irq(&qdio->req_q_lock);
1633 static void zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *req)
1635 struct zfcp_port *port = req->data;
1636 struct fsf_qtcb_header *header = &req->qtcb->header;
1637 struct scsi_device *sdev;
1639 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1642 switch (header->fsf_status) {
1643 case FSF_PORT_HANDLE_NOT_VALID:
1644 zfcp_erp_adapter_reopen(port->adapter, 0, "fscpph1", req);
1645 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1647 case FSF_ACCESS_DENIED:
1648 zfcp_cfdc_port_denied(port, &header->fsf_status_qual);
1650 case FSF_PORT_BOXED:
1651 /* can't use generic zfcp_erp_modify_port_status because
1652 * ZFCP_STATUS_COMMON_OPEN must not be reset for the port */
1653 atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
1654 shost_for_each_device(sdev, port->adapter->scsi_host)
1655 if (sdev_to_zfcp(sdev)->port == port)
1656 atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN,
1657 &sdev_to_zfcp(sdev)->status);
1658 zfcp_erp_set_port_status(port, ZFCP_STATUS_COMMON_ACCESS_BOXED);
1659 zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED,
1661 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1663 case FSF_ADAPTER_STATUS_AVAILABLE:
1664 switch (header->fsf_status_qual.word[0]) {
1665 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1667 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1668 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1673 /* can't use generic zfcp_erp_modify_port_status because
1674 * ZFCP_STATUS_COMMON_OPEN must not be reset for the port
1676 atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
1677 shost_for_each_device(sdev, port->adapter->scsi_host)
1678 if (sdev_to_zfcp(sdev)->port == port)
1679 atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN,
1680 &sdev_to_zfcp(sdev)->status);
1686 * zfcp_fsf_close_physical_port - close physical port
1687 * @erp_action: pointer to struct zfcp_erp_action
1688 * Returns: 0 on success
1690 int zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action)
1692 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1693 struct zfcp_fsf_req *req;
1696 spin_lock_irq(&qdio->req_q_lock);
1697 if (zfcp_qdio_sbal_get(qdio))
1700 req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PHYSICAL_PORT,
1701 SBAL_FLAGS0_TYPE_READ,
1702 qdio->adapter->pool.erp_req);
1705 retval = PTR_ERR(req);
1709 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1710 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1712 req->data = erp_action->port;
1713 req->qtcb->header.port_handle = erp_action->port->handle;
1714 req->erp_action = erp_action;
1715 req->handler = zfcp_fsf_close_physical_port_handler;
1716 erp_action->fsf_req_id = req->req_id;
1718 zfcp_fsf_start_erp_timer(req);
1719 retval = zfcp_fsf_req_send(req);
1721 zfcp_fsf_req_free(req);
1722 erp_action->fsf_req_id = 0;
1725 spin_unlock_irq(&qdio->req_q_lock);
1729 static void zfcp_fsf_open_lun_handler(struct zfcp_fsf_req *req)
1731 struct zfcp_adapter *adapter = req->adapter;
1732 struct scsi_device *sdev = req->data;
1733 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
1734 struct fsf_qtcb_header *header = &req->qtcb->header;
1735 struct fsf_qtcb_bottom_support *bottom = &req->qtcb->bottom.support;
1737 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1740 atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED |
1741 ZFCP_STATUS_COMMON_ACCESS_BOXED |
1742 ZFCP_STATUS_LUN_SHARED |
1743 ZFCP_STATUS_LUN_READONLY,
1744 &zfcp_sdev->status);
1746 switch (header->fsf_status) {
1748 case FSF_PORT_HANDLE_NOT_VALID:
1749 zfcp_erp_adapter_reopen(adapter, 0, "fsouh_1", req);
1751 case FSF_LUN_ALREADY_OPEN:
1753 case FSF_ACCESS_DENIED:
1754 zfcp_cfdc_lun_denied(sdev, &header->fsf_status_qual);
1755 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1757 case FSF_PORT_BOXED:
1758 zfcp_erp_set_port_status(zfcp_sdev->port,
1759 ZFCP_STATUS_COMMON_ACCESS_BOXED);
1760 zfcp_erp_port_reopen(zfcp_sdev->port,
1761 ZFCP_STATUS_COMMON_ERP_FAILED, "fsouh_2",
1763 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1765 case FSF_LUN_SHARING_VIOLATION:
1766 zfcp_cfdc_lun_shrng_vltn(sdev, &header->fsf_status_qual);
1767 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1769 case FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED:
1770 dev_warn(&adapter->ccw_device->dev,
1771 "No handle is available for LUN "
1772 "0x%016Lx on port 0x%016Lx\n",
1773 (unsigned long long)zfcp_scsi_dev_lun(sdev),
1774 (unsigned long long)zfcp_sdev->port->wwpn);
1775 zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_ERP_FAILED);
1777 case FSF_INVALID_COMMAND_OPTION:
1778 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1780 case FSF_ADAPTER_STATUS_AVAILABLE:
1781 switch (header->fsf_status_qual.word[0]) {
1782 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1783 zfcp_fc_test_link(zfcp_sdev->port);
1785 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1786 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1792 zfcp_sdev->lun_handle = header->lun_handle;
1793 atomic_set_mask(ZFCP_STATUS_COMMON_OPEN, &zfcp_sdev->status);
1794 zfcp_cfdc_open_lun_eval(sdev, bottom);
1800 * zfcp_fsf_open_lun - open LUN
1801 * @erp_action: pointer to struct zfcp_erp_action
1802 * Returns: 0 on success, error otherwise
1804 int zfcp_fsf_open_lun(struct zfcp_erp_action *erp_action)
1806 struct zfcp_adapter *adapter = erp_action->adapter;
1807 struct zfcp_qdio *qdio = adapter->qdio;
1808 struct zfcp_fsf_req *req;
1811 spin_lock_irq(&qdio->req_q_lock);
1812 if (zfcp_qdio_sbal_get(qdio))
1815 req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_LUN,
1816 SBAL_FLAGS0_TYPE_READ,
1817 adapter->pool.erp_req);
1820 retval = PTR_ERR(req);
1824 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1825 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1827 req->qtcb->header.port_handle = erp_action->port->handle;
1828 req->qtcb->bottom.support.fcp_lun = zfcp_scsi_dev_lun(erp_action->sdev);
1829 req->handler = zfcp_fsf_open_lun_handler;
1830 req->data = erp_action->sdev;
1831 req->erp_action = erp_action;
1832 erp_action->fsf_req_id = req->req_id;
1834 if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE))
1835 req->qtcb->bottom.support.option = FSF_OPEN_LUN_SUPPRESS_BOXING;
1837 zfcp_fsf_start_erp_timer(req);
1838 retval = zfcp_fsf_req_send(req);
1840 zfcp_fsf_req_free(req);
1841 erp_action->fsf_req_id = 0;
1844 spin_unlock_irq(&qdio->req_q_lock);
1848 static void zfcp_fsf_close_lun_handler(struct zfcp_fsf_req *req)
1850 struct scsi_device *sdev = req->data;
1851 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
1853 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1856 switch (req->qtcb->header.fsf_status) {
1857 case FSF_PORT_HANDLE_NOT_VALID:
1858 zfcp_erp_adapter_reopen(zfcp_sdev->port->adapter, 0, "fscuh_1",
1860 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1862 case FSF_LUN_HANDLE_NOT_VALID:
1863 zfcp_erp_port_reopen(zfcp_sdev->port, 0, "fscuh_2", req);
1864 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1866 case FSF_PORT_BOXED:
1867 zfcp_erp_set_port_status(zfcp_sdev->port,
1868 ZFCP_STATUS_COMMON_ACCESS_BOXED);
1869 zfcp_erp_port_reopen(zfcp_sdev->port,
1870 ZFCP_STATUS_COMMON_ERP_FAILED, "fscuh_3",
1872 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1874 case FSF_ADAPTER_STATUS_AVAILABLE:
1875 switch (req->qtcb->header.fsf_status_qual.word[0]) {
1876 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1877 zfcp_fc_test_link(zfcp_sdev->port);
1879 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1880 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1885 atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, &zfcp_sdev->status);
1891 * zfcp_fsf_close_LUN - close LUN
1892 * @erp_action: pointer to erp_action triggering the "close LUN"
1893 * Returns: 0 on success, error otherwise
1895 int zfcp_fsf_close_lun(struct zfcp_erp_action *erp_action)
1897 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1898 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(erp_action->sdev);
1899 struct zfcp_fsf_req *req;
1902 spin_lock_irq(&qdio->req_q_lock);
1903 if (zfcp_qdio_sbal_get(qdio))
1906 req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_LUN,
1907 SBAL_FLAGS0_TYPE_READ,
1908 qdio->adapter->pool.erp_req);
1911 retval = PTR_ERR(req);
1915 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1916 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1918 req->qtcb->header.port_handle = erp_action->port->handle;
1919 req->qtcb->header.lun_handle = zfcp_sdev->lun_handle;
1920 req->handler = zfcp_fsf_close_lun_handler;
1921 req->data = erp_action->sdev;
1922 req->erp_action = erp_action;
1923 erp_action->fsf_req_id = req->req_id;
1925 zfcp_fsf_start_erp_timer(req);
1926 retval = zfcp_fsf_req_send(req);
1928 zfcp_fsf_req_free(req);
1929 erp_action->fsf_req_id = 0;
1932 spin_unlock_irq(&qdio->req_q_lock);
1936 static void zfcp_fsf_update_lat(struct fsf_latency_record *lat_rec, u32 lat)
1938 lat_rec->sum += lat;
1939 lat_rec->min = min(lat_rec->min, lat);
1940 lat_rec->max = max(lat_rec->max, lat);
1943 static void zfcp_fsf_req_trace(struct zfcp_fsf_req *req, struct scsi_cmnd *scsi)
1945 struct fsf_qual_latency_info *lat_in;
1946 struct latency_cont *lat = NULL;
1947 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scsi->device);
1948 struct zfcp_blk_drv_data blktrc;
1949 int ticks = req->adapter->timer_ticks;
1951 lat_in = &req->qtcb->prefix.prot_status_qual.latency_info;
1954 blktrc.magic = ZFCP_BLK_DRV_DATA_MAGIC;
1955 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1956 blktrc.flags |= ZFCP_BLK_REQ_ERROR;
1957 blktrc.inb_usage = 0;
1958 blktrc.outb_usage = req->qdio_req.qdio_outb_usage;
1960 if (req->adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA &&
1961 !(req->status & ZFCP_STATUS_FSFREQ_ERROR)) {
1962 blktrc.flags |= ZFCP_BLK_LAT_VALID;
1963 blktrc.channel_lat = lat_in->channel_lat * ticks;
1964 blktrc.fabric_lat = lat_in->fabric_lat * ticks;
1966 switch (req->qtcb->bottom.io.data_direction) {
1967 case FSF_DATADIR_DIF_READ_STRIP:
1968 case FSF_DATADIR_DIF_READ_CONVERT:
1969 case FSF_DATADIR_READ:
1970 lat = &zfcp_sdev->latencies.read;
1972 case FSF_DATADIR_DIF_WRITE_INSERT:
1973 case FSF_DATADIR_DIF_WRITE_CONVERT:
1974 case FSF_DATADIR_WRITE:
1975 lat = &zfcp_sdev->latencies.write;
1977 case FSF_DATADIR_CMND:
1978 lat = &zfcp_sdev->latencies.cmd;
1983 spin_lock(&zfcp_sdev->latencies.lock);
1984 zfcp_fsf_update_lat(&lat->channel, lat_in->channel_lat);
1985 zfcp_fsf_update_lat(&lat->fabric, lat_in->fabric_lat);
1987 spin_unlock(&zfcp_sdev->latencies.lock);
1991 blk_add_driver_data(scsi->request->q, scsi->request, &blktrc,
1995 static void zfcp_fsf_fcp_handler_common(struct zfcp_fsf_req *req)
1997 struct scsi_cmnd *scmnd = req->data;
1998 struct scsi_device *sdev = scmnd->device;
1999 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
2000 struct fsf_qtcb_header *header = &req->qtcb->header;
2002 if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR))
2005 switch (header->fsf_status) {
2006 case FSF_HANDLE_MISMATCH:
2007 case FSF_PORT_HANDLE_NOT_VALID:
2008 zfcp_erp_adapter_reopen(zfcp_sdev->port->adapter, 0, "fssfch1",
2010 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2012 case FSF_FCPLUN_NOT_VALID:
2013 case FSF_LUN_HANDLE_NOT_VALID:
2014 zfcp_erp_port_reopen(zfcp_sdev->port, 0, "fssfch2", req);
2015 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2017 case FSF_SERVICE_CLASS_NOT_SUPPORTED:
2018 zfcp_fsf_class_not_supp(req);
2020 case FSF_ACCESS_DENIED:
2021 zfcp_cfdc_lun_denied(sdev, &header->fsf_status_qual);
2022 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2024 case FSF_DIRECTION_INDICATOR_NOT_VALID:
2025 dev_err(&req->adapter->ccw_device->dev,
2026 "Incorrect direction %d, LUN 0x%016Lx on port "
2027 "0x%016Lx closed\n",
2028 req->qtcb->bottom.io.data_direction,
2029 (unsigned long long)zfcp_scsi_dev_lun(sdev),
2030 (unsigned long long)zfcp_sdev->port->wwpn);
2031 zfcp_erp_adapter_shutdown(zfcp_sdev->port->adapter, 0,
2033 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2035 case FSF_CMND_LENGTH_NOT_VALID:
2036 dev_err(&req->adapter->ccw_device->dev,
2037 "Incorrect CDB length %d, LUN 0x%016Lx on "
2038 "port 0x%016Lx closed\n",
2039 req->qtcb->bottom.io.fcp_cmnd_length,
2040 (unsigned long long)zfcp_scsi_dev_lun(sdev),
2041 (unsigned long long)zfcp_sdev->port->wwpn);
2042 zfcp_erp_adapter_shutdown(zfcp_sdev->port->adapter, 0,
2044 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2046 case FSF_PORT_BOXED:
2047 zfcp_erp_set_port_status(zfcp_sdev->port,
2048 ZFCP_STATUS_COMMON_ACCESS_BOXED);
2049 zfcp_erp_port_reopen(zfcp_sdev->port,
2050 ZFCP_STATUS_COMMON_ERP_FAILED, "fssfch5",
2052 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2055 zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_ACCESS_BOXED);
2056 zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED,
2058 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2060 case FSF_ADAPTER_STATUS_AVAILABLE:
2061 if (header->fsf_status_qual.word[0] ==
2062 FSF_SQ_INVOKE_LINK_TEST_PROCEDURE)
2063 zfcp_fc_test_link(zfcp_sdev->port);
2064 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2069 static void zfcp_fsf_fcp_cmnd_handler(struct zfcp_fsf_req *req)
2071 struct scsi_cmnd *scpnt;
2072 struct fcp_resp_with_ext *fcp_rsp;
2073 unsigned long flags;
2075 zfcp_fsf_fcp_handler_common(req);
2077 read_lock_irqsave(&req->adapter->abort_lock, flags);
2080 if (unlikely(!scpnt)) {
2081 read_unlock_irqrestore(&req->adapter->abort_lock, flags);
2085 if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) {
2086 set_host_byte(scpnt, DID_TRANSPORT_DISRUPTED);
2087 goto skip_fsfstatus;
2090 switch (req->qtcb->header.fsf_status) {
2091 case FSF_INCONSISTENT_PROT_DATA:
2092 case FSF_INVALID_PROT_PARM:
2093 set_host_byte(scpnt, DID_ERROR);
2094 goto skip_fsfstatus;
2095 case FSF_BLOCK_GUARD_CHECK_FAILURE:
2096 zfcp_scsi_dif_sense_error(scpnt, 0x1);
2097 goto skip_fsfstatus;
2098 case FSF_APP_TAG_CHECK_FAILURE:
2099 zfcp_scsi_dif_sense_error(scpnt, 0x2);
2100 goto skip_fsfstatus;
2101 case FSF_REF_TAG_CHECK_FAILURE:
2102 zfcp_scsi_dif_sense_error(scpnt, 0x3);
2103 goto skip_fsfstatus;
2105 fcp_rsp = (struct fcp_resp_with_ext *) &req->qtcb->bottom.io.fcp_rsp;
2106 zfcp_fc_eval_fcp_rsp(fcp_rsp, scpnt);
2109 zfcp_fsf_req_trace(req, scpnt);
2110 zfcp_dbf_scsi_result(req->adapter->dbf, scpnt, req);
2112 scpnt->host_scribble = NULL;
2113 (scpnt->scsi_done) (scpnt);
2115 * We must hold this lock until scsi_done has been called.
2116 * Otherwise we may call scsi_done after abort regarding this
2117 * command has completed.
2118 * Note: scsi_done must not block!
2120 read_unlock_irqrestore(&req->adapter->abort_lock, flags);
2123 static int zfcp_fsf_set_data_dir(struct scsi_cmnd *scsi_cmnd, u32 *data_dir)
2125 switch (scsi_get_prot_op(scsi_cmnd)) {
2126 case SCSI_PROT_NORMAL:
2127 switch (scsi_cmnd->sc_data_direction) {
2129 *data_dir = FSF_DATADIR_CMND;
2131 case DMA_FROM_DEVICE:
2132 *data_dir = FSF_DATADIR_READ;
2135 *data_dir = FSF_DATADIR_WRITE;
2137 case DMA_BIDIRECTIONAL:
2142 case SCSI_PROT_READ_STRIP:
2143 *data_dir = FSF_DATADIR_DIF_READ_STRIP;
2145 case SCSI_PROT_WRITE_INSERT:
2146 *data_dir = FSF_DATADIR_DIF_WRITE_INSERT;
2148 case SCSI_PROT_READ_PASS:
2149 *data_dir = FSF_DATADIR_DIF_READ_CONVERT;
2151 case SCSI_PROT_WRITE_PASS:
2152 *data_dir = FSF_DATADIR_DIF_WRITE_CONVERT;
2162 * zfcp_fsf_fcp_cmnd - initiate an FCP command (for a SCSI command)
2163 * @scsi_cmnd: scsi command to be sent
2165 int zfcp_fsf_fcp_cmnd(struct scsi_cmnd *scsi_cmnd)
2167 struct zfcp_fsf_req *req;
2168 struct fcp_cmnd *fcp_cmnd;
2169 unsigned int sbtype = SBAL_FLAGS0_TYPE_READ;
2170 int real_bytes, retval = -EIO, dix_bytes = 0;
2171 struct scsi_device *sdev = scsi_cmnd->device;
2172 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
2173 struct zfcp_adapter *adapter = zfcp_sdev->port->adapter;
2174 struct zfcp_qdio *qdio = adapter->qdio;
2175 struct fsf_qtcb_bottom_io *io;
2177 if (unlikely(!(atomic_read(&zfcp_sdev->status) &
2178 ZFCP_STATUS_COMMON_UNBLOCKED)))
2181 spin_lock(&qdio->req_q_lock);
2182 if (atomic_read(&qdio->req_q_free) <= 0) {
2183 atomic_inc(&qdio->req_q_full);
2187 if (scsi_cmnd->sc_data_direction == DMA_TO_DEVICE)
2188 sbtype = SBAL_FLAGS0_TYPE_WRITE;
2190 req = zfcp_fsf_req_create(qdio, FSF_QTCB_FCP_CMND,
2191 sbtype, adapter->pool.scsi_req);
2194 retval = PTR_ERR(req);
2198 scsi_cmnd->host_scribble = (unsigned char *) req->req_id;
2200 io = &req->qtcb->bottom.io;
2201 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
2202 req->data = scsi_cmnd;
2203 req->handler = zfcp_fsf_fcp_cmnd_handler;
2204 req->qtcb->header.lun_handle = zfcp_sdev->lun_handle;
2205 req->qtcb->header.port_handle = zfcp_sdev->port->handle;
2206 io->service_class = FSF_CLASS_3;
2207 io->fcp_cmnd_length = FCP_CMND_LEN;
2209 if (scsi_get_prot_op(scsi_cmnd) != SCSI_PROT_NORMAL) {
2210 io->data_block_length = scsi_cmnd->device->sector_size;
2211 io->ref_tag_value = scsi_get_lba(scsi_cmnd) & 0xFFFFFFFF;
2214 zfcp_fsf_set_data_dir(scsi_cmnd, &io->data_direction);
2216 fcp_cmnd = (struct fcp_cmnd *) &req->qtcb->bottom.io.fcp_cmnd;
2217 zfcp_fc_scsi_to_fcp(fcp_cmnd, scsi_cmnd);
2219 if (scsi_prot_sg_count(scsi_cmnd)) {
2220 zfcp_qdio_set_data_div(qdio, &req->qdio_req,
2221 scsi_prot_sg_count(scsi_cmnd));
2222 dix_bytes = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req,
2223 scsi_prot_sglist(scsi_cmnd));
2224 io->prot_data_length = dix_bytes;
2227 real_bytes = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req,
2228 scsi_sglist(scsi_cmnd));
2230 if (unlikely(real_bytes < 0) || unlikely(dix_bytes < 0))
2231 goto failed_scsi_cmnd;
2233 zfcp_qdio_set_sbale_last(adapter->qdio, &req->qdio_req);
2235 retval = zfcp_fsf_req_send(req);
2236 if (unlikely(retval))
2237 goto failed_scsi_cmnd;
2242 zfcp_fsf_req_free(req);
2243 scsi_cmnd->host_scribble = NULL;
2245 spin_unlock(&qdio->req_q_lock);
2249 static void zfcp_fsf_fcp_task_mgmt_handler(struct zfcp_fsf_req *req)
2251 struct fcp_resp_with_ext *fcp_rsp;
2252 struct fcp_resp_rsp_info *rsp_info;
2254 zfcp_fsf_fcp_handler_common(req);
2256 fcp_rsp = (struct fcp_resp_with_ext *) &req->qtcb->bottom.io.fcp_rsp;
2257 rsp_info = (struct fcp_resp_rsp_info *) &fcp_rsp[1];
2259 if ((rsp_info->rsp_code != FCP_TMF_CMPL) ||
2260 (req->status & ZFCP_STATUS_FSFREQ_ERROR))
2261 req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED;
2265 * zfcp_fsf_fcp_task_mgmt - send SCSI task management command
2266 * @scmnd: SCSI command to send the task management command for
2267 * @tm_flags: unsigned byte for task management flags
2268 * Returns: on success pointer to struct fsf_req, NULL otherwise
2270 struct zfcp_fsf_req *zfcp_fsf_fcp_task_mgmt(struct scsi_cmnd *scmnd,
2273 struct zfcp_fsf_req *req = NULL;
2274 struct fcp_cmnd *fcp_cmnd;
2275 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scmnd->device);
2276 struct zfcp_qdio *qdio = zfcp_sdev->port->adapter->qdio;
2278 if (unlikely(!(atomic_read(&zfcp_sdev->status) &
2279 ZFCP_STATUS_COMMON_UNBLOCKED)))
2282 spin_lock_irq(&qdio->req_q_lock);
2283 if (zfcp_qdio_sbal_get(qdio))
2286 req = zfcp_fsf_req_create(qdio, FSF_QTCB_FCP_CMND,
2287 SBAL_FLAGS0_TYPE_WRITE,
2288 qdio->adapter->pool.scsi_req);
2295 req->status |= ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT;
2297 req->handler = zfcp_fsf_fcp_task_mgmt_handler;
2298 req->qtcb->header.lun_handle = zfcp_sdev->lun_handle;
2299 req->qtcb->header.port_handle = zfcp_sdev->port->handle;
2300 req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND;
2301 req->qtcb->bottom.io.service_class = FSF_CLASS_3;
2302 req->qtcb->bottom.io.fcp_cmnd_length = FCP_CMND_LEN;
2304 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
2306 fcp_cmnd = (struct fcp_cmnd *) &req->qtcb->bottom.io.fcp_cmnd;
2307 zfcp_fc_fcp_tm(fcp_cmnd, scmnd->device, tm_flags);
2309 zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT);
2310 if (!zfcp_fsf_req_send(req))
2313 zfcp_fsf_req_free(req);
2316 spin_unlock_irq(&qdio->req_q_lock);
2320 static void zfcp_fsf_control_file_handler(struct zfcp_fsf_req *req)
2325 * zfcp_fsf_control_file - control file upload/download
2326 * @adapter: pointer to struct zfcp_adapter
2327 * @fsf_cfdc: pointer to struct zfcp_fsf_cfdc
2328 * Returns: on success pointer to struct zfcp_fsf_req, NULL otherwise
2330 struct zfcp_fsf_req *zfcp_fsf_control_file(struct zfcp_adapter *adapter,
2331 struct zfcp_fsf_cfdc *fsf_cfdc)
2333 struct zfcp_qdio *qdio = adapter->qdio;
2334 struct zfcp_fsf_req *req = NULL;
2335 struct fsf_qtcb_bottom_support *bottom;
2336 int direction, retval = -EIO, bytes;
2338 if (!(adapter->adapter_features & FSF_FEATURE_CFDC))
2339 return ERR_PTR(-EOPNOTSUPP);
2341 switch (fsf_cfdc->command) {
2342 case FSF_QTCB_DOWNLOAD_CONTROL_FILE:
2343 direction = SBAL_FLAGS0_TYPE_WRITE;
2345 case FSF_QTCB_UPLOAD_CONTROL_FILE:
2346 direction = SBAL_FLAGS0_TYPE_READ;
2349 return ERR_PTR(-EINVAL);
2352 spin_lock_irq(&qdio->req_q_lock);
2353 if (zfcp_qdio_sbal_get(qdio))
2356 req = zfcp_fsf_req_create(qdio, fsf_cfdc->command, direction, NULL);
2362 req->handler = zfcp_fsf_control_file_handler;
2364 bottom = &req->qtcb->bottom.support;
2365 bottom->operation_subtype = FSF_CFDC_OPERATION_SUBTYPE;
2366 bottom->option = fsf_cfdc->option;
2368 bytes = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, fsf_cfdc->sg);
2370 if (bytes != ZFCP_CFDC_MAX_SIZE) {
2371 zfcp_fsf_req_free(req);
2374 zfcp_qdio_set_sbale_last(adapter->qdio, &req->qdio_req);
2376 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
2377 retval = zfcp_fsf_req_send(req);
2379 spin_unlock_irq(&qdio->req_q_lock);
2382 wait_for_completion(&req->completion);
2385 return ERR_PTR(retval);
2389 * zfcp_fsf_reqid_check - validate req_id contained in SBAL returned by QDIO
2390 * @adapter: pointer to struct zfcp_adapter
2391 * @sbal_idx: response queue index of SBAL to be processed
2393 void zfcp_fsf_reqid_check(struct zfcp_qdio *qdio, int sbal_idx)
2395 struct zfcp_adapter *adapter = qdio->adapter;
2396 struct qdio_buffer *sbal = qdio->res_q[sbal_idx];
2397 struct qdio_buffer_element *sbale;
2398 struct zfcp_fsf_req *fsf_req;
2399 unsigned long req_id;
2402 for (idx = 0; idx < QDIO_MAX_ELEMENTS_PER_BUFFER; idx++) {
2404 sbale = &sbal->element[idx];
2405 req_id = (unsigned long) sbale->addr;
2406 fsf_req = zfcp_reqlist_find_rm(adapter->req_list, req_id);
2410 * Unknown request means that we have potentially memory
2411 * corruption and must stop the machine immediately.
2413 zfcp_qdio_siosl(adapter);
2414 panic("error: unknown req_id (%lx) on adapter %s.\n",
2415 req_id, dev_name(&adapter->ccw_device->dev));
2418 fsf_req->qdio_req.sbal_response = sbal_idx;
2419 zfcp_fsf_req_complete(fsf_req);
2421 if (likely(sbale->flags & SBAL_FLAGS_LAST_ENTRY))