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_uss("fssrh_1", req);
215 mempool_free(sr_buf, adapter->pool.status_read_data);
216 zfcp_fsf_req_free(req);
220 zfcp_dbf_hba_fsf_uss("fssrh_2", req);
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_bit_err("fssrh_3", 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 zfcp_fsf_link_down_info_eval(req,
536 &qtcb->header.fsf_status_qual.link_down_info);
539 zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh3", req);
543 if (adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT) {
544 adapter->hardware_version = bottom->hardware_version;
545 memcpy(fc_host_serial_number(shost), bottom->serial_number,
546 min(FC_SERIAL_NUMBER_SIZE, 17));
547 EBCASC(fc_host_serial_number(shost),
548 min(FC_SERIAL_NUMBER_SIZE, 17));
551 if (FSF_QTCB_CURRENT_VERSION < bottom->low_qtcb_version) {
552 dev_err(&adapter->ccw_device->dev,
553 "The FCP adapter only supports newer "
554 "control block versions\n");
555 zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh4", req);
558 if (FSF_QTCB_CURRENT_VERSION > bottom->high_qtcb_version) {
559 dev_err(&adapter->ccw_device->dev,
560 "The FCP adapter only supports older "
561 "control block versions\n");
562 zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh5", req);
566 static void zfcp_fsf_exchange_port_evaluate(struct zfcp_fsf_req *req)
568 struct zfcp_adapter *adapter = req->adapter;
569 struct fsf_qtcb_bottom_port *bottom = &req->qtcb->bottom.port;
570 struct Scsi_Host *shost = adapter->scsi_host;
573 memcpy(req->data, bottom, sizeof(*bottom));
575 if (adapter->connection_features & FSF_FEATURE_NPIV_MODE) {
576 fc_host_permanent_port_name(shost) = bottom->wwpn;
577 fc_host_port_type(shost) = FC_PORTTYPE_NPIV;
579 fc_host_permanent_port_name(shost) = fc_host_port_name(shost);
580 fc_host_maxframe_size(shost) = bottom->maximum_frame_size;
581 fc_host_supported_speeds(shost) = bottom->supported_speed;
582 memcpy(fc_host_supported_fc4s(shost), bottom->supported_fc4_types,
584 memcpy(fc_host_active_fc4s(shost), bottom->active_fc4_types,
588 static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *req)
590 struct fsf_qtcb *qtcb = req->qtcb;
592 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
595 switch (qtcb->header.fsf_status) {
597 zfcp_fsf_exchange_port_evaluate(req);
599 case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE:
600 zfcp_fsf_exchange_port_evaluate(req);
601 zfcp_fsf_link_down_info_eval(req,
602 &qtcb->header.fsf_status_qual.link_down_info);
607 static struct zfcp_fsf_req *zfcp_fsf_alloc(mempool_t *pool)
609 struct zfcp_fsf_req *req;
612 req = mempool_alloc(pool, GFP_ATOMIC);
614 req = kmalloc(sizeof(*req), GFP_ATOMIC);
619 memset(req, 0, sizeof(*req));
624 static struct fsf_qtcb *zfcp_qtcb_alloc(mempool_t *pool)
626 struct fsf_qtcb *qtcb;
629 qtcb = mempool_alloc(pool, GFP_ATOMIC);
631 qtcb = kmem_cache_alloc(zfcp_data.qtcb_cache, GFP_ATOMIC);
636 memset(qtcb, 0, sizeof(*qtcb));
640 static struct zfcp_fsf_req *zfcp_fsf_req_create(struct zfcp_qdio *qdio,
641 u32 fsf_cmd, u32 sbtype,
644 struct zfcp_adapter *adapter = qdio->adapter;
645 struct zfcp_fsf_req *req = zfcp_fsf_alloc(pool);
648 return ERR_PTR(-ENOMEM);
650 if (adapter->req_no == 0)
653 INIT_LIST_HEAD(&req->list);
654 init_timer(&req->timer);
655 init_completion(&req->completion);
657 req->adapter = adapter;
658 req->fsf_command = fsf_cmd;
659 req->req_id = adapter->req_no;
661 if (likely(fsf_cmd != FSF_QTCB_UNSOLICITED_STATUS)) {
663 req->qtcb = zfcp_qtcb_alloc(adapter->pool.qtcb_pool);
665 req->qtcb = zfcp_qtcb_alloc(NULL);
667 if (unlikely(!req->qtcb)) {
668 zfcp_fsf_req_free(req);
669 return ERR_PTR(-ENOMEM);
672 req->seq_no = adapter->fsf_req_seq_no;
673 req->qtcb->prefix.req_seq_no = adapter->fsf_req_seq_no;
674 req->qtcb->prefix.req_id = req->req_id;
675 req->qtcb->prefix.ulp_info = 26;
676 req->qtcb->prefix.qtcb_type = fsf_qtcb_type[req->fsf_command];
677 req->qtcb->prefix.qtcb_version = FSF_QTCB_CURRENT_VERSION;
678 req->qtcb->header.req_handle = req->req_id;
679 req->qtcb->header.fsf_command = req->fsf_command;
682 zfcp_qdio_req_init(adapter->qdio, &req->qdio_req, req->req_id, sbtype,
683 req->qtcb, sizeof(struct fsf_qtcb));
688 static int zfcp_fsf_req_send(struct zfcp_fsf_req *req)
690 struct zfcp_adapter *adapter = req->adapter;
691 struct zfcp_qdio *qdio = adapter->qdio;
692 int with_qtcb = (req->qtcb != NULL);
693 int req_id = req->req_id;
695 zfcp_reqlist_add(adapter->req_list, req);
697 req->qdio_req.qdio_outb_usage = atomic_read(&qdio->req_q_free);
698 req->issued = get_clock();
699 if (zfcp_qdio_send(qdio, &req->qdio_req)) {
700 del_timer(&req->timer);
701 /* lookup request again, list might have changed */
702 zfcp_reqlist_find_rm(adapter->req_list, req_id);
703 zfcp_erp_adapter_reopen(adapter, 0, "fsrs__1", req);
707 /* Don't increase for unsolicited status */
709 adapter->fsf_req_seq_no++;
716 * zfcp_fsf_status_read - send status read request
717 * @adapter: pointer to struct zfcp_adapter
718 * @req_flags: request flags
719 * Returns: 0 on success, ERROR otherwise
721 int zfcp_fsf_status_read(struct zfcp_qdio *qdio)
723 struct zfcp_adapter *adapter = qdio->adapter;
724 struct zfcp_fsf_req *req;
725 struct fsf_status_read_buffer *sr_buf;
728 spin_lock_irq(&qdio->req_q_lock);
729 if (zfcp_qdio_sbal_get(qdio))
732 req = zfcp_fsf_req_create(qdio, FSF_QTCB_UNSOLICITED_STATUS, 0,
733 adapter->pool.status_read_req);
735 retval = PTR_ERR(req);
739 sr_buf = mempool_alloc(adapter->pool.status_read_data, GFP_ATOMIC);
744 memset(sr_buf, 0, sizeof(*sr_buf));
747 zfcp_qdio_fill_next(qdio, &req->qdio_req, sr_buf, sizeof(*sr_buf));
748 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
750 retval = zfcp_fsf_req_send(req);
752 goto failed_req_send;
758 mempool_free(sr_buf, adapter->pool.status_read_data);
760 zfcp_dbf_hba_fsf_uss("fssr__1", req);
761 zfcp_fsf_req_free(req);
763 spin_unlock_irq(&qdio->req_q_lock);
767 static void zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req *req)
769 struct scsi_device *sdev = req->data;
770 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
771 union fsf_status_qual *fsq = &req->qtcb->header.fsf_status_qual;
773 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
776 switch (req->qtcb->header.fsf_status) {
777 case FSF_PORT_HANDLE_NOT_VALID:
778 if (fsq->word[0] == fsq->word[1]) {
779 zfcp_erp_adapter_reopen(zfcp_sdev->port->adapter, 0,
781 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
784 case FSF_LUN_HANDLE_NOT_VALID:
785 if (fsq->word[0] == fsq->word[1]) {
786 zfcp_erp_port_reopen(zfcp_sdev->port, 0, "fsafch2",
788 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
791 case FSF_FCP_COMMAND_DOES_NOT_EXIST:
792 req->status |= ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED;
795 zfcp_erp_set_port_status(zfcp_sdev->port,
796 ZFCP_STATUS_COMMON_ACCESS_BOXED);
797 zfcp_erp_port_reopen(zfcp_sdev->port,
798 ZFCP_STATUS_COMMON_ERP_FAILED, "fsafch3",
800 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
803 zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_ACCESS_BOXED);
804 zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED,
806 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
808 case FSF_ADAPTER_STATUS_AVAILABLE:
809 switch (fsq->word[0]) {
810 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
811 zfcp_fc_test_link(zfcp_sdev->port);
813 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
814 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
819 req->status |= ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED;
825 * zfcp_fsf_abort_fcp_cmnd - abort running SCSI command
826 * @scmnd: The SCSI command to abort
827 * Returns: pointer to struct zfcp_fsf_req
830 struct zfcp_fsf_req *zfcp_fsf_abort_fcp_cmnd(struct scsi_cmnd *scmnd)
832 struct zfcp_fsf_req *req = NULL;
833 struct scsi_device *sdev = scmnd->device;
834 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
835 struct zfcp_qdio *qdio = zfcp_sdev->port->adapter->qdio;
836 unsigned long old_req_id = (unsigned long) scmnd->host_scribble;
838 spin_lock_irq(&qdio->req_q_lock);
839 if (zfcp_qdio_sbal_get(qdio))
841 req = zfcp_fsf_req_create(qdio, FSF_QTCB_ABORT_FCP_CMND,
842 SBAL_FLAGS0_TYPE_READ,
843 qdio->adapter->pool.scsi_abort);
849 if (unlikely(!(atomic_read(&zfcp_sdev->status) &
850 ZFCP_STATUS_COMMON_UNBLOCKED)))
853 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
856 req->handler = zfcp_fsf_abort_fcp_command_handler;
857 req->qtcb->header.lun_handle = zfcp_sdev->lun_handle;
858 req->qtcb->header.port_handle = zfcp_sdev->port->handle;
859 req->qtcb->bottom.support.req_handle = (u64) old_req_id;
861 zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT);
862 if (!zfcp_fsf_req_send(req))
866 zfcp_fsf_req_free(req);
869 spin_unlock_irq(&qdio->req_q_lock);
873 static void zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *req)
875 struct zfcp_adapter *adapter = req->adapter;
876 struct zfcp_fsf_ct_els *ct = req->data;
877 struct fsf_qtcb_header *header = &req->qtcb->header;
879 ct->status = -EINVAL;
881 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
884 switch (header->fsf_status) {
886 zfcp_dbf_san_res("fsscth1", req);
889 case FSF_SERVICE_CLASS_NOT_SUPPORTED:
890 zfcp_fsf_class_not_supp(req);
892 case FSF_ADAPTER_STATUS_AVAILABLE:
893 switch (header->fsf_status_qual.word[0]){
894 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
895 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
896 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
900 case FSF_ACCESS_DENIED:
903 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
905 case FSF_PORT_HANDLE_NOT_VALID:
906 zfcp_erp_adapter_reopen(adapter, 0, "fsscth1", req);
908 case FSF_GENERIC_COMMAND_REJECTED:
909 case FSF_PAYLOAD_SIZE_MISMATCH:
910 case FSF_REQUEST_SIZE_TOO_LARGE:
911 case FSF_RESPONSE_SIZE_TOO_LARGE:
912 case FSF_SBAL_MISMATCH:
913 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
919 ct->handler(ct->handler_data);
922 static void zfcp_fsf_setup_ct_els_unchained(struct zfcp_qdio *qdio,
923 struct zfcp_qdio_req *q_req,
924 struct scatterlist *sg_req,
925 struct scatterlist *sg_resp)
927 zfcp_qdio_fill_next(qdio, q_req, sg_virt(sg_req), sg_req->length);
928 zfcp_qdio_fill_next(qdio, q_req, sg_virt(sg_resp), sg_resp->length);
929 zfcp_qdio_set_sbale_last(qdio, q_req);
932 static int zfcp_fsf_setup_ct_els_sbals(struct zfcp_fsf_req *req,
933 struct scatterlist *sg_req,
934 struct scatterlist *sg_resp)
936 struct zfcp_adapter *adapter = req->adapter;
937 u32 feat = adapter->adapter_features;
940 if (!(feat & FSF_FEATURE_ELS_CT_CHAINED_SBALS)) {
941 if (!zfcp_qdio_sg_one_sbale(sg_req) ||
942 !zfcp_qdio_sg_one_sbale(sg_resp))
945 zfcp_fsf_setup_ct_els_unchained(adapter->qdio, &req->qdio_req,
950 /* use single, unchained SBAL if it can hold the request */
951 if (zfcp_qdio_sg_one_sbale(sg_req) && zfcp_qdio_sg_one_sbale(sg_resp)) {
952 zfcp_fsf_setup_ct_els_unchained(adapter->qdio, &req->qdio_req,
957 bytes = zfcp_qdio_sbals_from_sg(adapter->qdio, &req->qdio_req, sg_req);
960 zfcp_qdio_set_sbale_last(adapter->qdio, &req->qdio_req);
961 req->qtcb->bottom.support.req_buf_length = bytes;
962 zfcp_qdio_skip_to_last_sbale(&req->qdio_req);
964 bytes = zfcp_qdio_sbals_from_sg(adapter->qdio, &req->qdio_req,
966 req->qtcb->bottom.support.resp_buf_length = bytes;
969 zfcp_qdio_set_sbale_last(adapter->qdio, &req->qdio_req);
974 static int zfcp_fsf_setup_ct_els(struct zfcp_fsf_req *req,
975 struct scatterlist *sg_req,
976 struct scatterlist *sg_resp,
977 unsigned int timeout)
981 ret = zfcp_fsf_setup_ct_els_sbals(req, sg_req, sg_resp);
985 /* common settings for ct/gs and els requests */
987 timeout = 255; /* max value accepted by hardware */
988 req->qtcb->bottom.support.service_class = FSF_CLASS_3;
989 req->qtcb->bottom.support.timeout = timeout;
990 zfcp_fsf_start_timer(req, (timeout + 10) * HZ);
996 * zfcp_fsf_send_ct - initiate a Generic Service request (FC-GS)
997 * @ct: pointer to struct zfcp_send_ct with data for request
998 * @pool: if non-null this mempool is used to allocate struct zfcp_fsf_req
1000 int zfcp_fsf_send_ct(struct zfcp_fc_wka_port *wka_port,
1001 struct zfcp_fsf_ct_els *ct, mempool_t *pool,
1002 unsigned int timeout)
1004 struct zfcp_qdio *qdio = wka_port->adapter->qdio;
1005 struct zfcp_fsf_req *req;
1008 spin_lock_irq(&qdio->req_q_lock);
1009 if (zfcp_qdio_sbal_get(qdio))
1012 req = zfcp_fsf_req_create(qdio, FSF_QTCB_SEND_GENERIC,
1013 SBAL_FLAGS0_TYPE_WRITE_READ, pool);
1020 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1021 ret = zfcp_fsf_setup_ct_els(req, ct->req, ct->resp, timeout);
1025 req->handler = zfcp_fsf_send_ct_handler;
1026 req->qtcb->header.port_handle = wka_port->handle;
1029 zfcp_dbf_san_req("fssct_1", req, wka_port->d_id);
1031 ret = zfcp_fsf_req_send(req);
1038 zfcp_fsf_req_free(req);
1040 spin_unlock_irq(&qdio->req_q_lock);
1044 static void zfcp_fsf_send_els_handler(struct zfcp_fsf_req *req)
1046 struct zfcp_fsf_ct_els *send_els = req->data;
1047 struct zfcp_port *port = send_els->port;
1048 struct fsf_qtcb_header *header = &req->qtcb->header;
1050 send_els->status = -EINVAL;
1052 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1053 goto skip_fsfstatus;
1055 switch (header->fsf_status) {
1057 zfcp_dbf_san_res("fsselh1", req);
1058 send_els->status = 0;
1060 case FSF_SERVICE_CLASS_NOT_SUPPORTED:
1061 zfcp_fsf_class_not_supp(req);
1063 case FSF_ADAPTER_STATUS_AVAILABLE:
1064 switch (header->fsf_status_qual.word[0]){
1065 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1066 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1067 case FSF_SQ_RETRY_IF_POSSIBLE:
1068 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1072 case FSF_ELS_COMMAND_REJECTED:
1073 case FSF_PAYLOAD_SIZE_MISMATCH:
1074 case FSF_REQUEST_SIZE_TOO_LARGE:
1075 case FSF_RESPONSE_SIZE_TOO_LARGE:
1077 case FSF_ACCESS_DENIED:
1079 zfcp_cfdc_port_denied(port, &header->fsf_status_qual);
1080 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1083 case FSF_SBAL_MISMATCH:
1084 /* should never occure, avoided in zfcp_fsf_send_els */
1087 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1091 if (send_els->handler)
1092 send_els->handler(send_els->handler_data);
1096 * zfcp_fsf_send_els - initiate an ELS command (FC-FS)
1097 * @els: pointer to struct zfcp_send_els with data for the command
1099 int zfcp_fsf_send_els(struct zfcp_adapter *adapter, u32 d_id,
1100 struct zfcp_fsf_ct_els *els, unsigned int timeout)
1102 struct zfcp_fsf_req *req;
1103 struct zfcp_qdio *qdio = adapter->qdio;
1106 spin_lock_irq(&qdio->req_q_lock);
1107 if (zfcp_qdio_sbal_get(qdio))
1110 req = zfcp_fsf_req_create(qdio, FSF_QTCB_SEND_ELS,
1111 SBAL_FLAGS0_TYPE_WRITE_READ, NULL);
1118 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1120 zfcp_qdio_sbal_limit(qdio, &req->qdio_req, 2);
1122 ret = zfcp_fsf_setup_ct_els(req, els->req, els->resp, timeout);
1127 hton24(req->qtcb->bottom.support.d_id, d_id);
1128 req->handler = zfcp_fsf_send_els_handler;
1131 zfcp_dbf_san_req("fssels1", req, d_id);
1133 ret = zfcp_fsf_req_send(req);
1140 zfcp_fsf_req_free(req);
1142 spin_unlock_irq(&qdio->req_q_lock);
1146 int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action)
1148 struct zfcp_fsf_req *req;
1149 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1152 spin_lock_irq(&qdio->req_q_lock);
1153 if (zfcp_qdio_sbal_get(qdio))
1156 req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_CONFIG_DATA,
1157 SBAL_FLAGS0_TYPE_READ,
1158 qdio->adapter->pool.erp_req);
1161 retval = PTR_ERR(req);
1165 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1166 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1168 req->qtcb->bottom.config.feature_selection =
1170 FSF_FEATURE_LUN_SHARING |
1171 FSF_FEATURE_NOTIFICATION_LOST |
1172 FSF_FEATURE_UPDATE_ALERT;
1173 req->erp_action = erp_action;
1174 req->handler = zfcp_fsf_exchange_config_data_handler;
1175 erp_action->fsf_req_id = req->req_id;
1177 zfcp_fsf_start_erp_timer(req);
1178 retval = zfcp_fsf_req_send(req);
1180 zfcp_fsf_req_free(req);
1181 erp_action->fsf_req_id = 0;
1184 spin_unlock_irq(&qdio->req_q_lock);
1188 int zfcp_fsf_exchange_config_data_sync(struct zfcp_qdio *qdio,
1189 struct fsf_qtcb_bottom_config *data)
1191 struct zfcp_fsf_req *req = NULL;
1194 spin_lock_irq(&qdio->req_q_lock);
1195 if (zfcp_qdio_sbal_get(qdio))
1198 req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_CONFIG_DATA,
1199 SBAL_FLAGS0_TYPE_READ, NULL);
1202 retval = PTR_ERR(req);
1206 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1207 req->handler = zfcp_fsf_exchange_config_data_handler;
1209 req->qtcb->bottom.config.feature_selection =
1211 FSF_FEATURE_LUN_SHARING |
1212 FSF_FEATURE_NOTIFICATION_LOST |
1213 FSF_FEATURE_UPDATE_ALERT;
1218 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1219 retval = zfcp_fsf_req_send(req);
1220 spin_unlock_irq(&qdio->req_q_lock);
1222 wait_for_completion(&req->completion);
1224 zfcp_fsf_req_free(req);
1228 spin_unlock_irq(&qdio->req_q_lock);
1233 * zfcp_fsf_exchange_port_data - request information about local port
1234 * @erp_action: ERP action for the adapter for which port data is requested
1235 * Returns: 0 on success, error otherwise
1237 int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action)
1239 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1240 struct zfcp_fsf_req *req;
1243 if (!(qdio->adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT))
1246 spin_lock_irq(&qdio->req_q_lock);
1247 if (zfcp_qdio_sbal_get(qdio))
1250 req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_PORT_DATA,
1251 SBAL_FLAGS0_TYPE_READ,
1252 qdio->adapter->pool.erp_req);
1255 retval = PTR_ERR(req);
1259 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1260 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1262 req->handler = zfcp_fsf_exchange_port_data_handler;
1263 req->erp_action = erp_action;
1264 erp_action->fsf_req_id = req->req_id;
1266 zfcp_fsf_start_erp_timer(req);
1267 retval = zfcp_fsf_req_send(req);
1269 zfcp_fsf_req_free(req);
1270 erp_action->fsf_req_id = 0;
1273 spin_unlock_irq(&qdio->req_q_lock);
1278 * zfcp_fsf_exchange_port_data_sync - request information about local port
1279 * @qdio: pointer to struct zfcp_qdio
1280 * @data: pointer to struct fsf_qtcb_bottom_port
1281 * Returns: 0 on success, error otherwise
1283 int zfcp_fsf_exchange_port_data_sync(struct zfcp_qdio *qdio,
1284 struct fsf_qtcb_bottom_port *data)
1286 struct zfcp_fsf_req *req = NULL;
1289 if (!(qdio->adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT))
1292 spin_lock_irq(&qdio->req_q_lock);
1293 if (zfcp_qdio_sbal_get(qdio))
1296 req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_PORT_DATA,
1297 SBAL_FLAGS0_TYPE_READ, NULL);
1300 retval = PTR_ERR(req);
1307 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1309 req->handler = zfcp_fsf_exchange_port_data_handler;
1310 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1311 retval = zfcp_fsf_req_send(req);
1312 spin_unlock_irq(&qdio->req_q_lock);
1315 wait_for_completion(&req->completion);
1317 zfcp_fsf_req_free(req);
1322 spin_unlock_irq(&qdio->req_q_lock);
1326 static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req *req)
1328 struct zfcp_port *port = req->data;
1329 struct fsf_qtcb_header *header = &req->qtcb->header;
1330 struct fc_els_flogi *plogi;
1332 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1335 switch (header->fsf_status) {
1336 case FSF_PORT_ALREADY_OPEN:
1338 case FSF_ACCESS_DENIED:
1339 zfcp_cfdc_port_denied(port, &header->fsf_status_qual);
1340 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1342 case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED:
1343 dev_warn(&req->adapter->ccw_device->dev,
1344 "Not enough FCP adapter resources to open "
1345 "remote port 0x%016Lx\n",
1346 (unsigned long long)port->wwpn);
1347 zfcp_erp_set_port_status(port,
1348 ZFCP_STATUS_COMMON_ERP_FAILED);
1349 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1351 case FSF_ADAPTER_STATUS_AVAILABLE:
1352 switch (header->fsf_status_qual.word[0]) {
1353 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1354 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1355 case FSF_SQ_NO_RETRY_POSSIBLE:
1356 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1361 port->handle = header->port_handle;
1362 atomic_set_mask(ZFCP_STATUS_COMMON_OPEN |
1363 ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
1364 atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED |
1365 ZFCP_STATUS_COMMON_ACCESS_BOXED,
1367 /* check whether D_ID has changed during open */
1369 * FIXME: This check is not airtight, as the FCP channel does
1370 * not monitor closures of target port connections caused on
1371 * the remote side. Thus, they might miss out on invalidating
1372 * locally cached WWPNs (and other N_Port parameters) of gone
1373 * target ports. So, our heroic attempt to make things safe
1374 * could be undermined by 'open port' response data tagged with
1375 * obsolete WWPNs. Another reason to monitor potential
1376 * connection closures ourself at least (by interpreting
1377 * incoming ELS' and unsolicited status). It just crosses my
1378 * mind that one should be able to cross-check by means of
1379 * another GID_PN straight after a port has been opened.
1380 * Alternately, an ADISC/PDISC ELS should suffice, as well.
1382 plogi = (struct fc_els_flogi *) req->qtcb->bottom.support.els;
1383 if (req->qtcb->bottom.support.els1_length >=
1385 zfcp_fc_plogi_evaluate(port, plogi);
1387 case FSF_UNKNOWN_OP_SUBTYPE:
1388 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1393 put_device(&port->dev);
1397 * zfcp_fsf_open_port - create and send open port request
1398 * @erp_action: pointer to struct zfcp_erp_action
1399 * Returns: 0 on success, error otherwise
1401 int zfcp_fsf_open_port(struct zfcp_erp_action *erp_action)
1403 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1404 struct zfcp_port *port = erp_action->port;
1405 struct zfcp_fsf_req *req;
1408 spin_lock_irq(&qdio->req_q_lock);
1409 if (zfcp_qdio_sbal_get(qdio))
1412 req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_PORT_WITH_DID,
1413 SBAL_FLAGS0_TYPE_READ,
1414 qdio->adapter->pool.erp_req);
1417 retval = PTR_ERR(req);
1421 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1422 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1424 req->handler = zfcp_fsf_open_port_handler;
1425 hton24(req->qtcb->bottom.support.d_id, port->d_id);
1427 req->erp_action = erp_action;
1428 erp_action->fsf_req_id = req->req_id;
1429 get_device(&port->dev);
1431 zfcp_fsf_start_erp_timer(req);
1432 retval = zfcp_fsf_req_send(req);
1434 zfcp_fsf_req_free(req);
1435 erp_action->fsf_req_id = 0;
1436 put_device(&port->dev);
1439 spin_unlock_irq(&qdio->req_q_lock);
1443 static void zfcp_fsf_close_port_handler(struct zfcp_fsf_req *req)
1445 struct zfcp_port *port = req->data;
1447 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1450 switch (req->qtcb->header.fsf_status) {
1451 case FSF_PORT_HANDLE_NOT_VALID:
1452 zfcp_erp_adapter_reopen(port->adapter, 0, "fscph_1", req);
1453 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1455 case FSF_ADAPTER_STATUS_AVAILABLE:
1458 zfcp_erp_clear_port_status(port, ZFCP_STATUS_COMMON_OPEN);
1464 * zfcp_fsf_close_port - create and send close port request
1465 * @erp_action: pointer to struct zfcp_erp_action
1466 * Returns: 0 on success, error otherwise
1468 int zfcp_fsf_close_port(struct zfcp_erp_action *erp_action)
1470 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1471 struct zfcp_fsf_req *req;
1474 spin_lock_irq(&qdio->req_q_lock);
1475 if (zfcp_qdio_sbal_get(qdio))
1478 req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PORT,
1479 SBAL_FLAGS0_TYPE_READ,
1480 qdio->adapter->pool.erp_req);
1483 retval = PTR_ERR(req);
1487 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1488 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1490 req->handler = zfcp_fsf_close_port_handler;
1491 req->data = erp_action->port;
1492 req->erp_action = erp_action;
1493 req->qtcb->header.port_handle = erp_action->port->handle;
1494 erp_action->fsf_req_id = req->req_id;
1496 zfcp_fsf_start_erp_timer(req);
1497 retval = zfcp_fsf_req_send(req);
1499 zfcp_fsf_req_free(req);
1500 erp_action->fsf_req_id = 0;
1503 spin_unlock_irq(&qdio->req_q_lock);
1507 static void zfcp_fsf_open_wka_port_handler(struct zfcp_fsf_req *req)
1509 struct zfcp_fc_wka_port *wka_port = req->data;
1510 struct fsf_qtcb_header *header = &req->qtcb->header;
1512 if (req->status & ZFCP_STATUS_FSFREQ_ERROR) {
1513 wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE;
1517 switch (header->fsf_status) {
1518 case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED:
1519 dev_warn(&req->adapter->ccw_device->dev,
1520 "Opening WKA port 0x%x failed\n", wka_port->d_id);
1522 case FSF_ADAPTER_STATUS_AVAILABLE:
1523 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1525 case FSF_ACCESS_DENIED:
1526 wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE;
1529 wka_port->handle = header->port_handle;
1531 case FSF_PORT_ALREADY_OPEN:
1532 wka_port->status = ZFCP_FC_WKA_PORT_ONLINE;
1535 wake_up(&wka_port->completion_wq);
1539 * zfcp_fsf_open_wka_port - create and send open wka-port request
1540 * @wka_port: pointer to struct zfcp_fc_wka_port
1541 * Returns: 0 on success, error otherwise
1543 int zfcp_fsf_open_wka_port(struct zfcp_fc_wka_port *wka_port)
1545 struct zfcp_qdio *qdio = wka_port->adapter->qdio;
1546 struct zfcp_fsf_req *req;
1549 spin_lock_irq(&qdio->req_q_lock);
1550 if (zfcp_qdio_sbal_get(qdio))
1553 req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_PORT_WITH_DID,
1554 SBAL_FLAGS0_TYPE_READ,
1555 qdio->adapter->pool.erp_req);
1557 if (unlikely(IS_ERR(req))) {
1558 retval = PTR_ERR(req);
1562 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1563 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1565 req->handler = zfcp_fsf_open_wka_port_handler;
1566 hton24(req->qtcb->bottom.support.d_id, wka_port->d_id);
1567 req->data = wka_port;
1569 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1570 retval = zfcp_fsf_req_send(req);
1572 zfcp_fsf_req_free(req);
1574 spin_unlock_irq(&qdio->req_q_lock);
1578 static void zfcp_fsf_close_wka_port_handler(struct zfcp_fsf_req *req)
1580 struct zfcp_fc_wka_port *wka_port = req->data;
1582 if (req->qtcb->header.fsf_status == FSF_PORT_HANDLE_NOT_VALID) {
1583 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1584 zfcp_erp_adapter_reopen(wka_port->adapter, 0, "fscwph1", req);
1587 wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE;
1588 wake_up(&wka_port->completion_wq);
1592 * zfcp_fsf_close_wka_port - create and send close wka port request
1593 * @wka_port: WKA port to open
1594 * Returns: 0 on success, error otherwise
1596 int zfcp_fsf_close_wka_port(struct zfcp_fc_wka_port *wka_port)
1598 struct zfcp_qdio *qdio = wka_port->adapter->qdio;
1599 struct zfcp_fsf_req *req;
1602 spin_lock_irq(&qdio->req_q_lock);
1603 if (zfcp_qdio_sbal_get(qdio))
1606 req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PORT,
1607 SBAL_FLAGS0_TYPE_READ,
1608 qdio->adapter->pool.erp_req);
1610 if (unlikely(IS_ERR(req))) {
1611 retval = PTR_ERR(req);
1615 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1616 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1618 req->handler = zfcp_fsf_close_wka_port_handler;
1619 req->data = wka_port;
1620 req->qtcb->header.port_handle = wka_port->handle;
1622 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1623 retval = zfcp_fsf_req_send(req);
1625 zfcp_fsf_req_free(req);
1627 spin_unlock_irq(&qdio->req_q_lock);
1631 static void zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *req)
1633 struct zfcp_port *port = req->data;
1634 struct fsf_qtcb_header *header = &req->qtcb->header;
1635 struct scsi_device *sdev;
1637 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1640 switch (header->fsf_status) {
1641 case FSF_PORT_HANDLE_NOT_VALID:
1642 zfcp_erp_adapter_reopen(port->adapter, 0, "fscpph1", req);
1643 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1645 case FSF_ACCESS_DENIED:
1646 zfcp_cfdc_port_denied(port, &header->fsf_status_qual);
1648 case FSF_PORT_BOXED:
1649 /* can't use generic zfcp_erp_modify_port_status because
1650 * ZFCP_STATUS_COMMON_OPEN must not be reset for the port */
1651 atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
1652 shost_for_each_device(sdev, port->adapter->scsi_host)
1653 if (sdev_to_zfcp(sdev)->port == port)
1654 atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN,
1655 &sdev_to_zfcp(sdev)->status);
1656 zfcp_erp_set_port_status(port, ZFCP_STATUS_COMMON_ACCESS_BOXED);
1657 zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED,
1659 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1661 case FSF_ADAPTER_STATUS_AVAILABLE:
1662 switch (header->fsf_status_qual.word[0]) {
1663 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1665 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1666 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1671 /* can't use generic zfcp_erp_modify_port_status because
1672 * ZFCP_STATUS_COMMON_OPEN must not be reset for the port
1674 atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
1675 shost_for_each_device(sdev, port->adapter->scsi_host)
1676 if (sdev_to_zfcp(sdev)->port == port)
1677 atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN,
1678 &sdev_to_zfcp(sdev)->status);
1684 * zfcp_fsf_close_physical_port - close physical port
1685 * @erp_action: pointer to struct zfcp_erp_action
1686 * Returns: 0 on success
1688 int zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action)
1690 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1691 struct zfcp_fsf_req *req;
1694 spin_lock_irq(&qdio->req_q_lock);
1695 if (zfcp_qdio_sbal_get(qdio))
1698 req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PHYSICAL_PORT,
1699 SBAL_FLAGS0_TYPE_READ,
1700 qdio->adapter->pool.erp_req);
1703 retval = PTR_ERR(req);
1707 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1708 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1710 req->data = erp_action->port;
1711 req->qtcb->header.port_handle = erp_action->port->handle;
1712 req->erp_action = erp_action;
1713 req->handler = zfcp_fsf_close_physical_port_handler;
1714 erp_action->fsf_req_id = req->req_id;
1716 zfcp_fsf_start_erp_timer(req);
1717 retval = zfcp_fsf_req_send(req);
1719 zfcp_fsf_req_free(req);
1720 erp_action->fsf_req_id = 0;
1723 spin_unlock_irq(&qdio->req_q_lock);
1727 static void zfcp_fsf_open_lun_handler(struct zfcp_fsf_req *req)
1729 struct zfcp_adapter *adapter = req->adapter;
1730 struct scsi_device *sdev = req->data;
1731 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
1732 struct fsf_qtcb_header *header = &req->qtcb->header;
1733 struct fsf_qtcb_bottom_support *bottom = &req->qtcb->bottom.support;
1735 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1738 atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED |
1739 ZFCP_STATUS_COMMON_ACCESS_BOXED |
1740 ZFCP_STATUS_LUN_SHARED |
1741 ZFCP_STATUS_LUN_READONLY,
1742 &zfcp_sdev->status);
1744 switch (header->fsf_status) {
1746 case FSF_PORT_HANDLE_NOT_VALID:
1747 zfcp_erp_adapter_reopen(adapter, 0, "fsouh_1", req);
1749 case FSF_LUN_ALREADY_OPEN:
1751 case FSF_ACCESS_DENIED:
1752 zfcp_cfdc_lun_denied(sdev, &header->fsf_status_qual);
1753 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1755 case FSF_PORT_BOXED:
1756 zfcp_erp_set_port_status(zfcp_sdev->port,
1757 ZFCP_STATUS_COMMON_ACCESS_BOXED);
1758 zfcp_erp_port_reopen(zfcp_sdev->port,
1759 ZFCP_STATUS_COMMON_ERP_FAILED, "fsouh_2",
1761 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1763 case FSF_LUN_SHARING_VIOLATION:
1764 zfcp_cfdc_lun_shrng_vltn(sdev, &header->fsf_status_qual);
1765 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1767 case FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED:
1768 dev_warn(&adapter->ccw_device->dev,
1769 "No handle is available for LUN "
1770 "0x%016Lx on port 0x%016Lx\n",
1771 (unsigned long long)zfcp_scsi_dev_lun(sdev),
1772 (unsigned long long)zfcp_sdev->port->wwpn);
1773 zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_ERP_FAILED);
1775 case FSF_INVALID_COMMAND_OPTION:
1776 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1778 case FSF_ADAPTER_STATUS_AVAILABLE:
1779 switch (header->fsf_status_qual.word[0]) {
1780 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1781 zfcp_fc_test_link(zfcp_sdev->port);
1783 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1784 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1790 zfcp_sdev->lun_handle = header->lun_handle;
1791 atomic_set_mask(ZFCP_STATUS_COMMON_OPEN, &zfcp_sdev->status);
1792 zfcp_cfdc_open_lun_eval(sdev, bottom);
1798 * zfcp_fsf_open_lun - open LUN
1799 * @erp_action: pointer to struct zfcp_erp_action
1800 * Returns: 0 on success, error otherwise
1802 int zfcp_fsf_open_lun(struct zfcp_erp_action *erp_action)
1804 struct zfcp_adapter *adapter = erp_action->adapter;
1805 struct zfcp_qdio *qdio = adapter->qdio;
1806 struct zfcp_fsf_req *req;
1809 spin_lock_irq(&qdio->req_q_lock);
1810 if (zfcp_qdio_sbal_get(qdio))
1813 req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_LUN,
1814 SBAL_FLAGS0_TYPE_READ,
1815 adapter->pool.erp_req);
1818 retval = PTR_ERR(req);
1822 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1823 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1825 req->qtcb->header.port_handle = erp_action->port->handle;
1826 req->qtcb->bottom.support.fcp_lun = zfcp_scsi_dev_lun(erp_action->sdev);
1827 req->handler = zfcp_fsf_open_lun_handler;
1828 req->data = erp_action->sdev;
1829 req->erp_action = erp_action;
1830 erp_action->fsf_req_id = req->req_id;
1832 if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE))
1833 req->qtcb->bottom.support.option = FSF_OPEN_LUN_SUPPRESS_BOXING;
1835 zfcp_fsf_start_erp_timer(req);
1836 retval = zfcp_fsf_req_send(req);
1838 zfcp_fsf_req_free(req);
1839 erp_action->fsf_req_id = 0;
1842 spin_unlock_irq(&qdio->req_q_lock);
1846 static void zfcp_fsf_close_lun_handler(struct zfcp_fsf_req *req)
1848 struct scsi_device *sdev = req->data;
1849 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
1851 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1854 switch (req->qtcb->header.fsf_status) {
1855 case FSF_PORT_HANDLE_NOT_VALID:
1856 zfcp_erp_adapter_reopen(zfcp_sdev->port->adapter, 0, "fscuh_1",
1858 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1860 case FSF_LUN_HANDLE_NOT_VALID:
1861 zfcp_erp_port_reopen(zfcp_sdev->port, 0, "fscuh_2", req);
1862 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1864 case FSF_PORT_BOXED:
1865 zfcp_erp_set_port_status(zfcp_sdev->port,
1866 ZFCP_STATUS_COMMON_ACCESS_BOXED);
1867 zfcp_erp_port_reopen(zfcp_sdev->port,
1868 ZFCP_STATUS_COMMON_ERP_FAILED, "fscuh_3",
1870 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1872 case FSF_ADAPTER_STATUS_AVAILABLE:
1873 switch (req->qtcb->header.fsf_status_qual.word[0]) {
1874 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1875 zfcp_fc_test_link(zfcp_sdev->port);
1877 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1878 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1883 atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, &zfcp_sdev->status);
1889 * zfcp_fsf_close_LUN - close LUN
1890 * @erp_action: pointer to erp_action triggering the "close LUN"
1891 * Returns: 0 on success, error otherwise
1893 int zfcp_fsf_close_lun(struct zfcp_erp_action *erp_action)
1895 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1896 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(erp_action->sdev);
1897 struct zfcp_fsf_req *req;
1900 spin_lock_irq(&qdio->req_q_lock);
1901 if (zfcp_qdio_sbal_get(qdio))
1904 req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_LUN,
1905 SBAL_FLAGS0_TYPE_READ,
1906 qdio->adapter->pool.erp_req);
1909 retval = PTR_ERR(req);
1913 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1914 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1916 req->qtcb->header.port_handle = erp_action->port->handle;
1917 req->qtcb->header.lun_handle = zfcp_sdev->lun_handle;
1918 req->handler = zfcp_fsf_close_lun_handler;
1919 req->data = erp_action->sdev;
1920 req->erp_action = erp_action;
1921 erp_action->fsf_req_id = req->req_id;
1923 zfcp_fsf_start_erp_timer(req);
1924 retval = zfcp_fsf_req_send(req);
1926 zfcp_fsf_req_free(req);
1927 erp_action->fsf_req_id = 0;
1930 spin_unlock_irq(&qdio->req_q_lock);
1934 static void zfcp_fsf_update_lat(struct fsf_latency_record *lat_rec, u32 lat)
1936 lat_rec->sum += lat;
1937 lat_rec->min = min(lat_rec->min, lat);
1938 lat_rec->max = max(lat_rec->max, lat);
1941 static void zfcp_fsf_req_trace(struct zfcp_fsf_req *req, struct scsi_cmnd *scsi)
1943 struct fsf_qual_latency_info *lat_in;
1944 struct latency_cont *lat = NULL;
1945 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scsi->device);
1946 struct zfcp_blk_drv_data blktrc;
1947 int ticks = req->adapter->timer_ticks;
1949 lat_in = &req->qtcb->prefix.prot_status_qual.latency_info;
1952 blktrc.magic = ZFCP_BLK_DRV_DATA_MAGIC;
1953 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1954 blktrc.flags |= ZFCP_BLK_REQ_ERROR;
1955 blktrc.inb_usage = 0;
1956 blktrc.outb_usage = req->qdio_req.qdio_outb_usage;
1958 if (req->adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA &&
1959 !(req->status & ZFCP_STATUS_FSFREQ_ERROR)) {
1960 blktrc.flags |= ZFCP_BLK_LAT_VALID;
1961 blktrc.channel_lat = lat_in->channel_lat * ticks;
1962 blktrc.fabric_lat = lat_in->fabric_lat * ticks;
1964 switch (req->qtcb->bottom.io.data_direction) {
1965 case FSF_DATADIR_DIF_READ_STRIP:
1966 case FSF_DATADIR_DIF_READ_CONVERT:
1967 case FSF_DATADIR_READ:
1968 lat = &zfcp_sdev->latencies.read;
1970 case FSF_DATADIR_DIF_WRITE_INSERT:
1971 case FSF_DATADIR_DIF_WRITE_CONVERT:
1972 case FSF_DATADIR_WRITE:
1973 lat = &zfcp_sdev->latencies.write;
1975 case FSF_DATADIR_CMND:
1976 lat = &zfcp_sdev->latencies.cmd;
1981 spin_lock(&zfcp_sdev->latencies.lock);
1982 zfcp_fsf_update_lat(&lat->channel, lat_in->channel_lat);
1983 zfcp_fsf_update_lat(&lat->fabric, lat_in->fabric_lat);
1985 spin_unlock(&zfcp_sdev->latencies.lock);
1989 blk_add_driver_data(scsi->request->q, scsi->request, &blktrc,
1993 static void zfcp_fsf_fcp_handler_common(struct zfcp_fsf_req *req)
1995 struct scsi_cmnd *scmnd = req->data;
1996 struct scsi_device *sdev = scmnd->device;
1997 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
1998 struct fsf_qtcb_header *header = &req->qtcb->header;
2000 if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR))
2003 switch (header->fsf_status) {
2004 case FSF_HANDLE_MISMATCH:
2005 case FSF_PORT_HANDLE_NOT_VALID:
2006 zfcp_erp_adapter_reopen(zfcp_sdev->port->adapter, 0, "fssfch1",
2008 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2010 case FSF_FCPLUN_NOT_VALID:
2011 case FSF_LUN_HANDLE_NOT_VALID:
2012 zfcp_erp_port_reopen(zfcp_sdev->port, 0, "fssfch2", req);
2013 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2015 case FSF_SERVICE_CLASS_NOT_SUPPORTED:
2016 zfcp_fsf_class_not_supp(req);
2018 case FSF_ACCESS_DENIED:
2019 zfcp_cfdc_lun_denied(sdev, &header->fsf_status_qual);
2020 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2022 case FSF_DIRECTION_INDICATOR_NOT_VALID:
2023 dev_err(&req->adapter->ccw_device->dev,
2024 "Incorrect direction %d, LUN 0x%016Lx on port "
2025 "0x%016Lx closed\n",
2026 req->qtcb->bottom.io.data_direction,
2027 (unsigned long long)zfcp_scsi_dev_lun(sdev),
2028 (unsigned long long)zfcp_sdev->port->wwpn);
2029 zfcp_erp_adapter_shutdown(zfcp_sdev->port->adapter, 0,
2031 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2033 case FSF_CMND_LENGTH_NOT_VALID:
2034 dev_err(&req->adapter->ccw_device->dev,
2035 "Incorrect CDB length %d, LUN 0x%016Lx on "
2036 "port 0x%016Lx closed\n",
2037 req->qtcb->bottom.io.fcp_cmnd_length,
2038 (unsigned long long)zfcp_scsi_dev_lun(sdev),
2039 (unsigned long long)zfcp_sdev->port->wwpn);
2040 zfcp_erp_adapter_shutdown(zfcp_sdev->port->adapter, 0,
2042 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2044 case FSF_PORT_BOXED:
2045 zfcp_erp_set_port_status(zfcp_sdev->port,
2046 ZFCP_STATUS_COMMON_ACCESS_BOXED);
2047 zfcp_erp_port_reopen(zfcp_sdev->port,
2048 ZFCP_STATUS_COMMON_ERP_FAILED, "fssfch5",
2050 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2053 zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_ACCESS_BOXED);
2054 zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED,
2056 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2058 case FSF_ADAPTER_STATUS_AVAILABLE:
2059 if (header->fsf_status_qual.word[0] ==
2060 FSF_SQ_INVOKE_LINK_TEST_PROCEDURE)
2061 zfcp_fc_test_link(zfcp_sdev->port);
2062 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2067 static void zfcp_fsf_fcp_cmnd_handler(struct zfcp_fsf_req *req)
2069 struct scsi_cmnd *scpnt;
2070 struct fcp_resp_with_ext *fcp_rsp;
2071 unsigned long flags;
2073 read_lock_irqsave(&req->adapter->abort_lock, flags);
2076 if (unlikely(!scpnt)) {
2077 read_unlock_irqrestore(&req->adapter->abort_lock, flags);
2081 zfcp_fsf_fcp_handler_common(req);
2083 if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) {
2084 set_host_byte(scpnt, DID_TRANSPORT_DISRUPTED);
2085 goto skip_fsfstatus;
2088 switch (req->qtcb->header.fsf_status) {
2089 case FSF_INCONSISTENT_PROT_DATA:
2090 case FSF_INVALID_PROT_PARM:
2091 set_host_byte(scpnt, DID_ERROR);
2092 goto skip_fsfstatus;
2093 case FSF_BLOCK_GUARD_CHECK_FAILURE:
2094 zfcp_scsi_dif_sense_error(scpnt, 0x1);
2095 goto skip_fsfstatus;
2096 case FSF_APP_TAG_CHECK_FAILURE:
2097 zfcp_scsi_dif_sense_error(scpnt, 0x2);
2098 goto skip_fsfstatus;
2099 case FSF_REF_TAG_CHECK_FAILURE:
2100 zfcp_scsi_dif_sense_error(scpnt, 0x3);
2101 goto skip_fsfstatus;
2103 fcp_rsp = (struct fcp_resp_with_ext *) &req->qtcb->bottom.io.fcp_rsp;
2104 zfcp_fc_eval_fcp_rsp(fcp_rsp, scpnt);
2107 zfcp_fsf_req_trace(req, scpnt);
2108 zfcp_dbf_scsi_result(req->adapter->dbf, scpnt, req);
2110 scpnt->host_scribble = NULL;
2111 (scpnt->scsi_done) (scpnt);
2113 * We must hold this lock until scsi_done has been called.
2114 * Otherwise we may call scsi_done after abort regarding this
2115 * command has completed.
2116 * Note: scsi_done must not block!
2118 read_unlock_irqrestore(&req->adapter->abort_lock, flags);
2121 static int zfcp_fsf_set_data_dir(struct scsi_cmnd *scsi_cmnd, u32 *data_dir)
2123 switch (scsi_get_prot_op(scsi_cmnd)) {
2124 case SCSI_PROT_NORMAL:
2125 switch (scsi_cmnd->sc_data_direction) {
2127 *data_dir = FSF_DATADIR_CMND;
2129 case DMA_FROM_DEVICE:
2130 *data_dir = FSF_DATADIR_READ;
2133 *data_dir = FSF_DATADIR_WRITE;
2135 case DMA_BIDIRECTIONAL:
2140 case SCSI_PROT_READ_STRIP:
2141 *data_dir = FSF_DATADIR_DIF_READ_STRIP;
2143 case SCSI_PROT_WRITE_INSERT:
2144 *data_dir = FSF_DATADIR_DIF_WRITE_INSERT;
2146 case SCSI_PROT_READ_PASS:
2147 *data_dir = FSF_DATADIR_DIF_READ_CONVERT;
2149 case SCSI_PROT_WRITE_PASS:
2150 *data_dir = FSF_DATADIR_DIF_WRITE_CONVERT;
2160 * zfcp_fsf_fcp_cmnd - initiate an FCP command (for a SCSI command)
2161 * @scsi_cmnd: scsi command to be sent
2163 int zfcp_fsf_fcp_cmnd(struct scsi_cmnd *scsi_cmnd)
2165 struct zfcp_fsf_req *req;
2166 struct fcp_cmnd *fcp_cmnd;
2167 unsigned int sbtype = SBAL_FLAGS0_TYPE_READ;
2168 int real_bytes, retval = -EIO, dix_bytes = 0;
2169 struct scsi_device *sdev = scsi_cmnd->device;
2170 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
2171 struct zfcp_adapter *adapter = zfcp_sdev->port->adapter;
2172 struct zfcp_qdio *qdio = adapter->qdio;
2173 struct fsf_qtcb_bottom_io *io;
2174 unsigned long flags;
2176 if (unlikely(!(atomic_read(&zfcp_sdev->status) &
2177 ZFCP_STATUS_COMMON_UNBLOCKED)))
2180 spin_lock_irqsave(&qdio->req_q_lock, flags);
2181 if (atomic_read(&qdio->req_q_free) <= 0) {
2182 atomic_inc(&qdio->req_q_full);
2186 if (scsi_cmnd->sc_data_direction == DMA_TO_DEVICE)
2187 sbtype = SBAL_FLAGS0_TYPE_WRITE;
2189 req = zfcp_fsf_req_create(qdio, FSF_QTCB_FCP_CMND,
2190 sbtype, adapter->pool.scsi_req);
2193 retval = PTR_ERR(req);
2197 scsi_cmnd->host_scribble = (unsigned char *) req->req_id;
2199 io = &req->qtcb->bottom.io;
2200 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
2201 req->data = scsi_cmnd;
2202 req->handler = zfcp_fsf_fcp_cmnd_handler;
2203 req->qtcb->header.lun_handle = zfcp_sdev->lun_handle;
2204 req->qtcb->header.port_handle = zfcp_sdev->port->handle;
2205 io->service_class = FSF_CLASS_3;
2206 io->fcp_cmnd_length = FCP_CMND_LEN;
2208 if (scsi_get_prot_op(scsi_cmnd) != SCSI_PROT_NORMAL) {
2209 io->data_block_length = scsi_cmnd->device->sector_size;
2210 io->ref_tag_value = scsi_get_lba(scsi_cmnd) & 0xFFFFFFFF;
2213 zfcp_fsf_set_data_dir(scsi_cmnd, &io->data_direction);
2215 fcp_cmnd = (struct fcp_cmnd *) &req->qtcb->bottom.io.fcp_cmnd;
2216 zfcp_fc_scsi_to_fcp(fcp_cmnd, scsi_cmnd);
2218 if (scsi_prot_sg_count(scsi_cmnd)) {
2219 zfcp_qdio_set_data_div(qdio, &req->qdio_req,
2220 scsi_prot_sg_count(scsi_cmnd));
2221 dix_bytes = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req,
2222 scsi_prot_sglist(scsi_cmnd));
2223 io->prot_data_length = dix_bytes;
2226 real_bytes = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req,
2227 scsi_sglist(scsi_cmnd));
2229 if (unlikely(real_bytes < 0) || unlikely(dix_bytes < 0))
2230 goto failed_scsi_cmnd;
2232 zfcp_qdio_set_sbale_last(adapter->qdio, &req->qdio_req);
2234 retval = zfcp_fsf_req_send(req);
2235 if (unlikely(retval))
2236 goto failed_scsi_cmnd;
2241 zfcp_fsf_req_free(req);
2242 scsi_cmnd->host_scribble = NULL;
2244 spin_unlock_irqrestore(&qdio->req_q_lock, flags);
2248 static void zfcp_fsf_fcp_task_mgmt_handler(struct zfcp_fsf_req *req)
2250 struct fcp_resp_with_ext *fcp_rsp;
2251 struct fcp_resp_rsp_info *rsp_info;
2253 zfcp_fsf_fcp_handler_common(req);
2255 fcp_rsp = (struct fcp_resp_with_ext *) &req->qtcb->bottom.io.fcp_rsp;
2256 rsp_info = (struct fcp_resp_rsp_info *) &fcp_rsp[1];
2258 if ((rsp_info->rsp_code != FCP_TMF_CMPL) ||
2259 (req->status & ZFCP_STATUS_FSFREQ_ERROR))
2260 req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED;
2264 * zfcp_fsf_fcp_task_mgmt - send SCSI task management command
2265 * @scmnd: SCSI command to send the task management command for
2266 * @tm_flags: unsigned byte for task management flags
2267 * Returns: on success pointer to struct fsf_req, NULL otherwise
2269 struct zfcp_fsf_req *zfcp_fsf_fcp_task_mgmt(struct scsi_cmnd *scmnd,
2272 struct zfcp_fsf_req *req = NULL;
2273 struct fcp_cmnd *fcp_cmnd;
2274 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scmnd->device);
2275 struct zfcp_qdio *qdio = zfcp_sdev->port->adapter->qdio;
2277 if (unlikely(!(atomic_read(&zfcp_sdev->status) &
2278 ZFCP_STATUS_COMMON_UNBLOCKED)))
2281 spin_lock_irq(&qdio->req_q_lock);
2282 if (zfcp_qdio_sbal_get(qdio))
2285 req = zfcp_fsf_req_create(qdio, FSF_QTCB_FCP_CMND,
2286 SBAL_FLAGS0_TYPE_WRITE,
2287 qdio->adapter->pool.scsi_req);
2294 req->status |= ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT;
2296 req->handler = zfcp_fsf_fcp_task_mgmt_handler;
2297 req->qtcb->header.lun_handle = zfcp_sdev->lun_handle;
2298 req->qtcb->header.port_handle = zfcp_sdev->port->handle;
2299 req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND;
2300 req->qtcb->bottom.io.service_class = FSF_CLASS_3;
2301 req->qtcb->bottom.io.fcp_cmnd_length = FCP_CMND_LEN;
2303 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
2305 fcp_cmnd = (struct fcp_cmnd *) &req->qtcb->bottom.io.fcp_cmnd;
2306 zfcp_fc_fcp_tm(fcp_cmnd, scmnd->device, tm_flags);
2308 zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT);
2309 if (!zfcp_fsf_req_send(req))
2312 zfcp_fsf_req_free(req);
2315 spin_unlock_irq(&qdio->req_q_lock);
2319 static void zfcp_fsf_control_file_handler(struct zfcp_fsf_req *req)
2324 * zfcp_fsf_control_file - control file upload/download
2325 * @adapter: pointer to struct zfcp_adapter
2326 * @fsf_cfdc: pointer to struct zfcp_fsf_cfdc
2327 * Returns: on success pointer to struct zfcp_fsf_req, NULL otherwise
2329 struct zfcp_fsf_req *zfcp_fsf_control_file(struct zfcp_adapter *adapter,
2330 struct zfcp_fsf_cfdc *fsf_cfdc)
2332 struct zfcp_qdio *qdio = adapter->qdio;
2333 struct zfcp_fsf_req *req = NULL;
2334 struct fsf_qtcb_bottom_support *bottom;
2335 int direction, retval = -EIO, bytes;
2337 if (!(adapter->adapter_features & FSF_FEATURE_CFDC))
2338 return ERR_PTR(-EOPNOTSUPP);
2340 switch (fsf_cfdc->command) {
2341 case FSF_QTCB_DOWNLOAD_CONTROL_FILE:
2342 direction = SBAL_FLAGS0_TYPE_WRITE;
2344 case FSF_QTCB_UPLOAD_CONTROL_FILE:
2345 direction = SBAL_FLAGS0_TYPE_READ;
2348 return ERR_PTR(-EINVAL);
2351 spin_lock_irq(&qdio->req_q_lock);
2352 if (zfcp_qdio_sbal_get(qdio))
2355 req = zfcp_fsf_req_create(qdio, fsf_cfdc->command, direction, NULL);
2361 req->handler = zfcp_fsf_control_file_handler;
2363 bottom = &req->qtcb->bottom.support;
2364 bottom->operation_subtype = FSF_CFDC_OPERATION_SUBTYPE;
2365 bottom->option = fsf_cfdc->option;
2367 bytes = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, fsf_cfdc->sg);
2369 if (bytes != ZFCP_CFDC_MAX_SIZE) {
2370 zfcp_fsf_req_free(req);
2373 zfcp_qdio_set_sbale_last(adapter->qdio, &req->qdio_req);
2375 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
2376 retval = zfcp_fsf_req_send(req);
2378 spin_unlock_irq(&qdio->req_q_lock);
2381 wait_for_completion(&req->completion);
2384 return ERR_PTR(retval);
2388 * zfcp_fsf_reqid_check - validate req_id contained in SBAL returned by QDIO
2389 * @adapter: pointer to struct zfcp_adapter
2390 * @sbal_idx: response queue index of SBAL to be processed
2392 void zfcp_fsf_reqid_check(struct zfcp_qdio *qdio, int sbal_idx)
2394 struct zfcp_adapter *adapter = qdio->adapter;
2395 struct qdio_buffer *sbal = qdio->res_q[sbal_idx];
2396 struct qdio_buffer_element *sbale;
2397 struct zfcp_fsf_req *fsf_req;
2398 unsigned long req_id;
2401 for (idx = 0; idx < QDIO_MAX_ELEMENTS_PER_BUFFER; idx++) {
2403 sbale = &sbal->element[idx];
2404 req_id = (unsigned long) sbale->addr;
2405 fsf_req = zfcp_reqlist_find_rm(adapter->req_list, req_id);
2409 * Unknown request means that we have potentially memory
2410 * corruption and must stop the machine immediately.
2412 zfcp_qdio_siosl(adapter);
2413 panic("error: unknown req_id (%lx) on adapter %s.\n",
2414 req_id, dev_name(&adapter->ccw_device->dev));
2417 fsf_req->qdio_req.sbal_response = sbal_idx;
2418 zfcp_fsf_req_complete(fsf_req);
2420 if (likely(sbale->flags & SBAL_FLAGS_LAST_ENTRY))
2425 struct zfcp_fsf_req *zfcp_fsf_get_req(struct zfcp_qdio *qdio,
2426 struct qdio_buffer *sbal)
2428 struct qdio_buffer_element *sbale = &sbal->element[0];
2429 u64 req_id = (unsigned long) sbale->addr;
2431 return zfcp_reqlist_find(qdio->adapter->req_list, req_id);