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");
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");
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");
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");
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");
340 case FSF_PROT_ERROR_STATE:
341 case FSF_PROT_SEQ_NUMB_ERROR:
342 zfcp_erp_adapter_reopen(adapter, 0, "fspse_2");
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");
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");
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");
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");
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");
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");
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");
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");
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");
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");
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");
787 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
790 case FSF_FCP_COMMAND_DOES_NOT_EXIST:
791 req->status |= ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED;
794 zfcp_erp_set_port_status(zfcp_sdev->port,
795 ZFCP_STATUS_COMMON_ACCESS_BOXED);
796 zfcp_erp_port_reopen(zfcp_sdev->port,
797 ZFCP_STATUS_COMMON_ERP_FAILED, "fsafch3");
798 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
801 zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_ACCESS_BOXED);
802 zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED,
804 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
806 case FSF_ADAPTER_STATUS_AVAILABLE:
807 switch (fsq->word[0]) {
808 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
809 zfcp_fc_test_link(zfcp_sdev->port);
811 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
812 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
817 req->status |= ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED;
823 * zfcp_fsf_abort_fcp_cmnd - abort running SCSI command
824 * @scmnd: The SCSI command to abort
825 * Returns: pointer to struct zfcp_fsf_req
828 struct zfcp_fsf_req *zfcp_fsf_abort_fcp_cmnd(struct scsi_cmnd *scmnd)
830 struct zfcp_fsf_req *req = NULL;
831 struct scsi_device *sdev = scmnd->device;
832 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
833 struct zfcp_qdio *qdio = zfcp_sdev->port->adapter->qdio;
834 unsigned long old_req_id = (unsigned long) scmnd->host_scribble;
836 spin_lock_irq(&qdio->req_q_lock);
837 if (zfcp_qdio_sbal_get(qdio))
839 req = zfcp_fsf_req_create(qdio, FSF_QTCB_ABORT_FCP_CMND,
840 SBAL_FLAGS0_TYPE_READ,
841 qdio->adapter->pool.scsi_abort);
847 if (unlikely(!(atomic_read(&zfcp_sdev->status) &
848 ZFCP_STATUS_COMMON_UNBLOCKED)))
851 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
854 req->handler = zfcp_fsf_abort_fcp_command_handler;
855 req->qtcb->header.lun_handle = zfcp_sdev->lun_handle;
856 req->qtcb->header.port_handle = zfcp_sdev->port->handle;
857 req->qtcb->bottom.support.req_handle = (u64) old_req_id;
859 zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT);
860 if (!zfcp_fsf_req_send(req))
864 zfcp_fsf_req_free(req);
867 spin_unlock_irq(&qdio->req_q_lock);
871 static void zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *req)
873 struct zfcp_adapter *adapter = req->adapter;
874 struct zfcp_fsf_ct_els *ct = req->data;
875 struct fsf_qtcb_header *header = &req->qtcb->header;
877 ct->status = -EINVAL;
879 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
882 switch (header->fsf_status) {
884 zfcp_dbf_san_res("fsscth1", req);
887 case FSF_SERVICE_CLASS_NOT_SUPPORTED:
888 zfcp_fsf_class_not_supp(req);
890 case FSF_ADAPTER_STATUS_AVAILABLE:
891 switch (header->fsf_status_qual.word[0]){
892 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
893 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
894 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
898 case FSF_ACCESS_DENIED:
901 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
903 case FSF_PORT_HANDLE_NOT_VALID:
904 zfcp_erp_adapter_reopen(adapter, 0, "fsscth1");
906 case FSF_GENERIC_COMMAND_REJECTED:
907 case FSF_PAYLOAD_SIZE_MISMATCH:
908 case FSF_REQUEST_SIZE_TOO_LARGE:
909 case FSF_RESPONSE_SIZE_TOO_LARGE:
910 case FSF_SBAL_MISMATCH:
911 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
917 ct->handler(ct->handler_data);
920 static void zfcp_fsf_setup_ct_els_unchained(struct zfcp_qdio *qdio,
921 struct zfcp_qdio_req *q_req,
922 struct scatterlist *sg_req,
923 struct scatterlist *sg_resp)
925 zfcp_qdio_fill_next(qdio, q_req, sg_virt(sg_req), sg_req->length);
926 zfcp_qdio_fill_next(qdio, q_req, sg_virt(sg_resp), sg_resp->length);
927 zfcp_qdio_set_sbale_last(qdio, q_req);
930 static int zfcp_fsf_setup_ct_els_sbals(struct zfcp_fsf_req *req,
931 struct scatterlist *sg_req,
932 struct scatterlist *sg_resp)
934 struct zfcp_adapter *adapter = req->adapter;
935 u32 feat = adapter->adapter_features;
938 if (!(feat & FSF_FEATURE_ELS_CT_CHAINED_SBALS)) {
939 if (!zfcp_qdio_sg_one_sbale(sg_req) ||
940 !zfcp_qdio_sg_one_sbale(sg_resp))
943 zfcp_fsf_setup_ct_els_unchained(adapter->qdio, &req->qdio_req,
948 /* use single, unchained SBAL if it can hold the request */
949 if (zfcp_qdio_sg_one_sbale(sg_req) && zfcp_qdio_sg_one_sbale(sg_resp)) {
950 zfcp_fsf_setup_ct_els_unchained(adapter->qdio, &req->qdio_req,
955 bytes = zfcp_qdio_sbals_from_sg(adapter->qdio, &req->qdio_req, sg_req);
958 zfcp_qdio_set_sbale_last(adapter->qdio, &req->qdio_req);
959 req->qtcb->bottom.support.req_buf_length = bytes;
960 zfcp_qdio_skip_to_last_sbale(&req->qdio_req);
962 bytes = zfcp_qdio_sbals_from_sg(adapter->qdio, &req->qdio_req,
964 req->qtcb->bottom.support.resp_buf_length = bytes;
967 zfcp_qdio_set_sbale_last(adapter->qdio, &req->qdio_req);
972 static int zfcp_fsf_setup_ct_els(struct zfcp_fsf_req *req,
973 struct scatterlist *sg_req,
974 struct scatterlist *sg_resp,
975 unsigned int timeout)
979 ret = zfcp_fsf_setup_ct_els_sbals(req, sg_req, sg_resp);
983 /* common settings for ct/gs and els requests */
985 timeout = 255; /* max value accepted by hardware */
986 req->qtcb->bottom.support.service_class = FSF_CLASS_3;
987 req->qtcb->bottom.support.timeout = timeout;
988 zfcp_fsf_start_timer(req, (timeout + 10) * HZ);
994 * zfcp_fsf_send_ct - initiate a Generic Service request (FC-GS)
995 * @ct: pointer to struct zfcp_send_ct with data for request
996 * @pool: if non-null this mempool is used to allocate struct zfcp_fsf_req
998 int zfcp_fsf_send_ct(struct zfcp_fc_wka_port *wka_port,
999 struct zfcp_fsf_ct_els *ct, mempool_t *pool,
1000 unsigned int timeout)
1002 struct zfcp_qdio *qdio = wka_port->adapter->qdio;
1003 struct zfcp_fsf_req *req;
1006 spin_lock_irq(&qdio->req_q_lock);
1007 if (zfcp_qdio_sbal_get(qdio))
1010 req = zfcp_fsf_req_create(qdio, FSF_QTCB_SEND_GENERIC,
1011 SBAL_FLAGS0_TYPE_WRITE_READ, pool);
1018 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1019 ret = zfcp_fsf_setup_ct_els(req, ct->req, ct->resp, timeout);
1023 req->handler = zfcp_fsf_send_ct_handler;
1024 req->qtcb->header.port_handle = wka_port->handle;
1027 zfcp_dbf_san_req("fssct_1", req, wka_port->d_id);
1029 ret = zfcp_fsf_req_send(req);
1036 zfcp_fsf_req_free(req);
1038 spin_unlock_irq(&qdio->req_q_lock);
1042 static void zfcp_fsf_send_els_handler(struct zfcp_fsf_req *req)
1044 struct zfcp_fsf_ct_els *send_els = req->data;
1045 struct zfcp_port *port = send_els->port;
1046 struct fsf_qtcb_header *header = &req->qtcb->header;
1048 send_els->status = -EINVAL;
1050 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1051 goto skip_fsfstatus;
1053 switch (header->fsf_status) {
1055 zfcp_dbf_san_res("fsselh1", req);
1056 send_els->status = 0;
1058 case FSF_SERVICE_CLASS_NOT_SUPPORTED:
1059 zfcp_fsf_class_not_supp(req);
1061 case FSF_ADAPTER_STATUS_AVAILABLE:
1062 switch (header->fsf_status_qual.word[0]){
1063 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1064 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1065 case FSF_SQ_RETRY_IF_POSSIBLE:
1066 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1070 case FSF_ELS_COMMAND_REJECTED:
1071 case FSF_PAYLOAD_SIZE_MISMATCH:
1072 case FSF_REQUEST_SIZE_TOO_LARGE:
1073 case FSF_RESPONSE_SIZE_TOO_LARGE:
1075 case FSF_ACCESS_DENIED:
1077 zfcp_cfdc_port_denied(port, &header->fsf_status_qual);
1078 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1081 case FSF_SBAL_MISMATCH:
1082 /* should never occure, avoided in zfcp_fsf_send_els */
1085 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1089 if (send_els->handler)
1090 send_els->handler(send_els->handler_data);
1094 * zfcp_fsf_send_els - initiate an ELS command (FC-FS)
1095 * @els: pointer to struct zfcp_send_els with data for the command
1097 int zfcp_fsf_send_els(struct zfcp_adapter *adapter, u32 d_id,
1098 struct zfcp_fsf_ct_els *els, unsigned int timeout)
1100 struct zfcp_fsf_req *req;
1101 struct zfcp_qdio *qdio = adapter->qdio;
1104 spin_lock_irq(&qdio->req_q_lock);
1105 if (zfcp_qdio_sbal_get(qdio))
1108 req = zfcp_fsf_req_create(qdio, FSF_QTCB_SEND_ELS,
1109 SBAL_FLAGS0_TYPE_WRITE_READ, NULL);
1116 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1118 zfcp_qdio_sbal_limit(qdio, &req->qdio_req, 2);
1120 ret = zfcp_fsf_setup_ct_els(req, els->req, els->resp, timeout);
1125 hton24(req->qtcb->bottom.support.d_id, d_id);
1126 req->handler = zfcp_fsf_send_els_handler;
1129 zfcp_dbf_san_req("fssels1", req, d_id);
1131 ret = zfcp_fsf_req_send(req);
1138 zfcp_fsf_req_free(req);
1140 spin_unlock_irq(&qdio->req_q_lock);
1144 int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action)
1146 struct zfcp_fsf_req *req;
1147 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1150 spin_lock_irq(&qdio->req_q_lock);
1151 if (zfcp_qdio_sbal_get(qdio))
1154 req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_CONFIG_DATA,
1155 SBAL_FLAGS0_TYPE_READ,
1156 qdio->adapter->pool.erp_req);
1159 retval = PTR_ERR(req);
1163 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1164 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1166 req->qtcb->bottom.config.feature_selection =
1168 FSF_FEATURE_LUN_SHARING |
1169 FSF_FEATURE_NOTIFICATION_LOST |
1170 FSF_FEATURE_UPDATE_ALERT;
1171 req->erp_action = erp_action;
1172 req->handler = zfcp_fsf_exchange_config_data_handler;
1173 erp_action->fsf_req_id = req->req_id;
1175 zfcp_fsf_start_erp_timer(req);
1176 retval = zfcp_fsf_req_send(req);
1178 zfcp_fsf_req_free(req);
1179 erp_action->fsf_req_id = 0;
1182 spin_unlock_irq(&qdio->req_q_lock);
1186 int zfcp_fsf_exchange_config_data_sync(struct zfcp_qdio *qdio,
1187 struct fsf_qtcb_bottom_config *data)
1189 struct zfcp_fsf_req *req = NULL;
1192 spin_lock_irq(&qdio->req_q_lock);
1193 if (zfcp_qdio_sbal_get(qdio))
1196 req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_CONFIG_DATA,
1197 SBAL_FLAGS0_TYPE_READ, NULL);
1200 retval = PTR_ERR(req);
1204 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1205 req->handler = zfcp_fsf_exchange_config_data_handler;
1207 req->qtcb->bottom.config.feature_selection =
1209 FSF_FEATURE_LUN_SHARING |
1210 FSF_FEATURE_NOTIFICATION_LOST |
1211 FSF_FEATURE_UPDATE_ALERT;
1216 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1217 retval = zfcp_fsf_req_send(req);
1218 spin_unlock_irq(&qdio->req_q_lock);
1220 wait_for_completion(&req->completion);
1222 zfcp_fsf_req_free(req);
1226 spin_unlock_irq(&qdio->req_q_lock);
1231 * zfcp_fsf_exchange_port_data - request information about local port
1232 * @erp_action: ERP action for the adapter for which port data is requested
1233 * Returns: 0 on success, error otherwise
1235 int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action)
1237 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1238 struct zfcp_fsf_req *req;
1241 if (!(qdio->adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT))
1244 spin_lock_irq(&qdio->req_q_lock);
1245 if (zfcp_qdio_sbal_get(qdio))
1248 req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_PORT_DATA,
1249 SBAL_FLAGS0_TYPE_READ,
1250 qdio->adapter->pool.erp_req);
1253 retval = PTR_ERR(req);
1257 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1258 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1260 req->handler = zfcp_fsf_exchange_port_data_handler;
1261 req->erp_action = erp_action;
1262 erp_action->fsf_req_id = req->req_id;
1264 zfcp_fsf_start_erp_timer(req);
1265 retval = zfcp_fsf_req_send(req);
1267 zfcp_fsf_req_free(req);
1268 erp_action->fsf_req_id = 0;
1271 spin_unlock_irq(&qdio->req_q_lock);
1276 * zfcp_fsf_exchange_port_data_sync - request information about local port
1277 * @qdio: pointer to struct zfcp_qdio
1278 * @data: pointer to struct fsf_qtcb_bottom_port
1279 * Returns: 0 on success, error otherwise
1281 int zfcp_fsf_exchange_port_data_sync(struct zfcp_qdio *qdio,
1282 struct fsf_qtcb_bottom_port *data)
1284 struct zfcp_fsf_req *req = NULL;
1287 if (!(qdio->adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT))
1290 spin_lock_irq(&qdio->req_q_lock);
1291 if (zfcp_qdio_sbal_get(qdio))
1294 req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_PORT_DATA,
1295 SBAL_FLAGS0_TYPE_READ, NULL);
1298 retval = PTR_ERR(req);
1305 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1307 req->handler = zfcp_fsf_exchange_port_data_handler;
1308 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1309 retval = zfcp_fsf_req_send(req);
1310 spin_unlock_irq(&qdio->req_q_lock);
1313 wait_for_completion(&req->completion);
1315 zfcp_fsf_req_free(req);
1320 spin_unlock_irq(&qdio->req_q_lock);
1324 static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req *req)
1326 struct zfcp_port *port = req->data;
1327 struct fsf_qtcb_header *header = &req->qtcb->header;
1328 struct fc_els_flogi *plogi;
1330 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1333 switch (header->fsf_status) {
1334 case FSF_PORT_ALREADY_OPEN:
1336 case FSF_ACCESS_DENIED:
1337 zfcp_cfdc_port_denied(port, &header->fsf_status_qual);
1338 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1340 case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED:
1341 dev_warn(&req->adapter->ccw_device->dev,
1342 "Not enough FCP adapter resources to open "
1343 "remote port 0x%016Lx\n",
1344 (unsigned long long)port->wwpn);
1345 zfcp_erp_set_port_status(port,
1346 ZFCP_STATUS_COMMON_ERP_FAILED);
1347 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1349 case FSF_ADAPTER_STATUS_AVAILABLE:
1350 switch (header->fsf_status_qual.word[0]) {
1351 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1352 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1353 case FSF_SQ_NO_RETRY_POSSIBLE:
1354 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1359 port->handle = header->port_handle;
1360 atomic_set_mask(ZFCP_STATUS_COMMON_OPEN |
1361 ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
1362 atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED |
1363 ZFCP_STATUS_COMMON_ACCESS_BOXED,
1365 /* check whether D_ID has changed during open */
1367 * FIXME: This check is not airtight, as the FCP channel does
1368 * not monitor closures of target port connections caused on
1369 * the remote side. Thus, they might miss out on invalidating
1370 * locally cached WWPNs (and other N_Port parameters) of gone
1371 * target ports. So, our heroic attempt to make things safe
1372 * could be undermined by 'open port' response data tagged with
1373 * obsolete WWPNs. Another reason to monitor potential
1374 * connection closures ourself at least (by interpreting
1375 * incoming ELS' and unsolicited status). It just crosses my
1376 * mind that one should be able to cross-check by means of
1377 * another GID_PN straight after a port has been opened.
1378 * Alternately, an ADISC/PDISC ELS should suffice, as well.
1380 plogi = (struct fc_els_flogi *) req->qtcb->bottom.support.els;
1381 if (req->qtcb->bottom.support.els1_length >=
1383 zfcp_fc_plogi_evaluate(port, plogi);
1385 case FSF_UNKNOWN_OP_SUBTYPE:
1386 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1391 put_device(&port->dev);
1395 * zfcp_fsf_open_port - create and send open port request
1396 * @erp_action: pointer to struct zfcp_erp_action
1397 * Returns: 0 on success, error otherwise
1399 int zfcp_fsf_open_port(struct zfcp_erp_action *erp_action)
1401 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1402 struct zfcp_port *port = erp_action->port;
1403 struct zfcp_fsf_req *req;
1406 spin_lock_irq(&qdio->req_q_lock);
1407 if (zfcp_qdio_sbal_get(qdio))
1410 req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_PORT_WITH_DID,
1411 SBAL_FLAGS0_TYPE_READ,
1412 qdio->adapter->pool.erp_req);
1415 retval = PTR_ERR(req);
1419 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1420 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1422 req->handler = zfcp_fsf_open_port_handler;
1423 hton24(req->qtcb->bottom.support.d_id, port->d_id);
1425 req->erp_action = erp_action;
1426 erp_action->fsf_req_id = req->req_id;
1427 get_device(&port->dev);
1429 zfcp_fsf_start_erp_timer(req);
1430 retval = zfcp_fsf_req_send(req);
1432 zfcp_fsf_req_free(req);
1433 erp_action->fsf_req_id = 0;
1434 put_device(&port->dev);
1437 spin_unlock_irq(&qdio->req_q_lock);
1441 static void zfcp_fsf_close_port_handler(struct zfcp_fsf_req *req)
1443 struct zfcp_port *port = req->data;
1445 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1448 switch (req->qtcb->header.fsf_status) {
1449 case FSF_PORT_HANDLE_NOT_VALID:
1450 zfcp_erp_adapter_reopen(port->adapter, 0, "fscph_1");
1451 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1453 case FSF_ADAPTER_STATUS_AVAILABLE:
1456 zfcp_erp_clear_port_status(port, ZFCP_STATUS_COMMON_OPEN);
1462 * zfcp_fsf_close_port - create and send close port request
1463 * @erp_action: pointer to struct zfcp_erp_action
1464 * Returns: 0 on success, error otherwise
1466 int zfcp_fsf_close_port(struct zfcp_erp_action *erp_action)
1468 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1469 struct zfcp_fsf_req *req;
1472 spin_lock_irq(&qdio->req_q_lock);
1473 if (zfcp_qdio_sbal_get(qdio))
1476 req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PORT,
1477 SBAL_FLAGS0_TYPE_READ,
1478 qdio->adapter->pool.erp_req);
1481 retval = PTR_ERR(req);
1485 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1486 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1488 req->handler = zfcp_fsf_close_port_handler;
1489 req->data = erp_action->port;
1490 req->erp_action = erp_action;
1491 req->qtcb->header.port_handle = erp_action->port->handle;
1492 erp_action->fsf_req_id = req->req_id;
1494 zfcp_fsf_start_erp_timer(req);
1495 retval = zfcp_fsf_req_send(req);
1497 zfcp_fsf_req_free(req);
1498 erp_action->fsf_req_id = 0;
1501 spin_unlock_irq(&qdio->req_q_lock);
1505 static void zfcp_fsf_open_wka_port_handler(struct zfcp_fsf_req *req)
1507 struct zfcp_fc_wka_port *wka_port = req->data;
1508 struct fsf_qtcb_header *header = &req->qtcb->header;
1510 if (req->status & ZFCP_STATUS_FSFREQ_ERROR) {
1511 wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE;
1515 switch (header->fsf_status) {
1516 case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED:
1517 dev_warn(&req->adapter->ccw_device->dev,
1518 "Opening WKA port 0x%x failed\n", wka_port->d_id);
1520 case FSF_ADAPTER_STATUS_AVAILABLE:
1521 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1523 case FSF_ACCESS_DENIED:
1524 wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE;
1527 wka_port->handle = header->port_handle;
1529 case FSF_PORT_ALREADY_OPEN:
1530 wka_port->status = ZFCP_FC_WKA_PORT_ONLINE;
1533 wake_up(&wka_port->completion_wq);
1537 * zfcp_fsf_open_wka_port - create and send open wka-port request
1538 * @wka_port: pointer to struct zfcp_fc_wka_port
1539 * Returns: 0 on success, error otherwise
1541 int zfcp_fsf_open_wka_port(struct zfcp_fc_wka_port *wka_port)
1543 struct zfcp_qdio *qdio = wka_port->adapter->qdio;
1544 struct zfcp_fsf_req *req;
1547 spin_lock_irq(&qdio->req_q_lock);
1548 if (zfcp_qdio_sbal_get(qdio))
1551 req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_PORT_WITH_DID,
1552 SBAL_FLAGS0_TYPE_READ,
1553 qdio->adapter->pool.erp_req);
1555 if (unlikely(IS_ERR(req))) {
1556 retval = PTR_ERR(req);
1560 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1561 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1563 req->handler = zfcp_fsf_open_wka_port_handler;
1564 hton24(req->qtcb->bottom.support.d_id, wka_port->d_id);
1565 req->data = wka_port;
1567 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1568 retval = zfcp_fsf_req_send(req);
1570 zfcp_fsf_req_free(req);
1572 spin_unlock_irq(&qdio->req_q_lock);
1576 static void zfcp_fsf_close_wka_port_handler(struct zfcp_fsf_req *req)
1578 struct zfcp_fc_wka_port *wka_port = req->data;
1580 if (req->qtcb->header.fsf_status == FSF_PORT_HANDLE_NOT_VALID) {
1581 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1582 zfcp_erp_adapter_reopen(wka_port->adapter, 0, "fscwph1");
1585 wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE;
1586 wake_up(&wka_port->completion_wq);
1590 * zfcp_fsf_close_wka_port - create and send close wka port request
1591 * @wka_port: WKA port to open
1592 * Returns: 0 on success, error otherwise
1594 int zfcp_fsf_close_wka_port(struct zfcp_fc_wka_port *wka_port)
1596 struct zfcp_qdio *qdio = wka_port->adapter->qdio;
1597 struct zfcp_fsf_req *req;
1600 spin_lock_irq(&qdio->req_q_lock);
1601 if (zfcp_qdio_sbal_get(qdio))
1604 req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PORT,
1605 SBAL_FLAGS0_TYPE_READ,
1606 qdio->adapter->pool.erp_req);
1608 if (unlikely(IS_ERR(req))) {
1609 retval = PTR_ERR(req);
1613 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1614 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1616 req->handler = zfcp_fsf_close_wka_port_handler;
1617 req->data = wka_port;
1618 req->qtcb->header.port_handle = wka_port->handle;
1620 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1621 retval = zfcp_fsf_req_send(req);
1623 zfcp_fsf_req_free(req);
1625 spin_unlock_irq(&qdio->req_q_lock);
1629 static void zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *req)
1631 struct zfcp_port *port = req->data;
1632 struct fsf_qtcb_header *header = &req->qtcb->header;
1633 struct scsi_device *sdev;
1635 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1638 switch (header->fsf_status) {
1639 case FSF_PORT_HANDLE_NOT_VALID:
1640 zfcp_erp_adapter_reopen(port->adapter, 0, "fscpph1");
1641 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1643 case FSF_ACCESS_DENIED:
1644 zfcp_cfdc_port_denied(port, &header->fsf_status_qual);
1646 case FSF_PORT_BOXED:
1647 /* can't use generic zfcp_erp_modify_port_status because
1648 * ZFCP_STATUS_COMMON_OPEN must not be reset for the port */
1649 atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
1650 shost_for_each_device(sdev, port->adapter->scsi_host)
1651 if (sdev_to_zfcp(sdev)->port == port)
1652 atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN,
1653 &sdev_to_zfcp(sdev)->status);
1654 zfcp_erp_set_port_status(port, ZFCP_STATUS_COMMON_ACCESS_BOXED);
1655 zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED,
1657 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1659 case FSF_ADAPTER_STATUS_AVAILABLE:
1660 switch (header->fsf_status_qual.word[0]) {
1661 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1663 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1664 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1669 /* can't use generic zfcp_erp_modify_port_status because
1670 * ZFCP_STATUS_COMMON_OPEN must not be reset for the port
1672 atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
1673 shost_for_each_device(sdev, port->adapter->scsi_host)
1674 if (sdev_to_zfcp(sdev)->port == port)
1675 atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN,
1676 &sdev_to_zfcp(sdev)->status);
1682 * zfcp_fsf_close_physical_port - close physical port
1683 * @erp_action: pointer to struct zfcp_erp_action
1684 * Returns: 0 on success
1686 int zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action)
1688 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1689 struct zfcp_fsf_req *req;
1692 spin_lock_irq(&qdio->req_q_lock);
1693 if (zfcp_qdio_sbal_get(qdio))
1696 req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PHYSICAL_PORT,
1697 SBAL_FLAGS0_TYPE_READ,
1698 qdio->adapter->pool.erp_req);
1701 retval = PTR_ERR(req);
1705 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1706 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1708 req->data = erp_action->port;
1709 req->qtcb->header.port_handle = erp_action->port->handle;
1710 req->erp_action = erp_action;
1711 req->handler = zfcp_fsf_close_physical_port_handler;
1712 erp_action->fsf_req_id = req->req_id;
1714 zfcp_fsf_start_erp_timer(req);
1715 retval = zfcp_fsf_req_send(req);
1717 zfcp_fsf_req_free(req);
1718 erp_action->fsf_req_id = 0;
1721 spin_unlock_irq(&qdio->req_q_lock);
1725 static void zfcp_fsf_open_lun_handler(struct zfcp_fsf_req *req)
1727 struct zfcp_adapter *adapter = req->adapter;
1728 struct scsi_device *sdev = req->data;
1729 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
1730 struct fsf_qtcb_header *header = &req->qtcb->header;
1731 struct fsf_qtcb_bottom_support *bottom = &req->qtcb->bottom.support;
1733 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1736 atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED |
1737 ZFCP_STATUS_COMMON_ACCESS_BOXED |
1738 ZFCP_STATUS_LUN_SHARED |
1739 ZFCP_STATUS_LUN_READONLY,
1740 &zfcp_sdev->status);
1742 switch (header->fsf_status) {
1744 case FSF_PORT_HANDLE_NOT_VALID:
1745 zfcp_erp_adapter_reopen(adapter, 0, "fsouh_1");
1747 case FSF_LUN_ALREADY_OPEN:
1749 case FSF_ACCESS_DENIED:
1750 zfcp_cfdc_lun_denied(sdev, &header->fsf_status_qual);
1751 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1753 case FSF_PORT_BOXED:
1754 zfcp_erp_set_port_status(zfcp_sdev->port,
1755 ZFCP_STATUS_COMMON_ACCESS_BOXED);
1756 zfcp_erp_port_reopen(zfcp_sdev->port,
1757 ZFCP_STATUS_COMMON_ERP_FAILED, "fsouh_2");
1758 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1760 case FSF_LUN_SHARING_VIOLATION:
1761 zfcp_cfdc_lun_shrng_vltn(sdev, &header->fsf_status_qual);
1762 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1764 case FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED:
1765 dev_warn(&adapter->ccw_device->dev,
1766 "No handle is available for LUN "
1767 "0x%016Lx on port 0x%016Lx\n",
1768 (unsigned long long)zfcp_scsi_dev_lun(sdev),
1769 (unsigned long long)zfcp_sdev->port->wwpn);
1770 zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_ERP_FAILED);
1772 case FSF_INVALID_COMMAND_OPTION:
1773 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1775 case FSF_ADAPTER_STATUS_AVAILABLE:
1776 switch (header->fsf_status_qual.word[0]) {
1777 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1778 zfcp_fc_test_link(zfcp_sdev->port);
1780 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1781 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1787 zfcp_sdev->lun_handle = header->lun_handle;
1788 atomic_set_mask(ZFCP_STATUS_COMMON_OPEN, &zfcp_sdev->status);
1789 zfcp_cfdc_open_lun_eval(sdev, bottom);
1795 * zfcp_fsf_open_lun - open LUN
1796 * @erp_action: pointer to struct zfcp_erp_action
1797 * Returns: 0 on success, error otherwise
1799 int zfcp_fsf_open_lun(struct zfcp_erp_action *erp_action)
1801 struct zfcp_adapter *adapter = erp_action->adapter;
1802 struct zfcp_qdio *qdio = adapter->qdio;
1803 struct zfcp_fsf_req *req;
1806 spin_lock_irq(&qdio->req_q_lock);
1807 if (zfcp_qdio_sbal_get(qdio))
1810 req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_LUN,
1811 SBAL_FLAGS0_TYPE_READ,
1812 adapter->pool.erp_req);
1815 retval = PTR_ERR(req);
1819 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1820 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1822 req->qtcb->header.port_handle = erp_action->port->handle;
1823 req->qtcb->bottom.support.fcp_lun = zfcp_scsi_dev_lun(erp_action->sdev);
1824 req->handler = zfcp_fsf_open_lun_handler;
1825 req->data = erp_action->sdev;
1826 req->erp_action = erp_action;
1827 erp_action->fsf_req_id = req->req_id;
1829 if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE))
1830 req->qtcb->bottom.support.option = FSF_OPEN_LUN_SUPPRESS_BOXING;
1832 zfcp_fsf_start_erp_timer(req);
1833 retval = zfcp_fsf_req_send(req);
1835 zfcp_fsf_req_free(req);
1836 erp_action->fsf_req_id = 0;
1839 spin_unlock_irq(&qdio->req_q_lock);
1843 static void zfcp_fsf_close_lun_handler(struct zfcp_fsf_req *req)
1845 struct scsi_device *sdev = req->data;
1846 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
1848 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1851 switch (req->qtcb->header.fsf_status) {
1852 case FSF_PORT_HANDLE_NOT_VALID:
1853 zfcp_erp_adapter_reopen(zfcp_sdev->port->adapter, 0, "fscuh_1");
1854 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1856 case FSF_LUN_HANDLE_NOT_VALID:
1857 zfcp_erp_port_reopen(zfcp_sdev->port, 0, "fscuh_2");
1858 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1860 case FSF_PORT_BOXED:
1861 zfcp_erp_set_port_status(zfcp_sdev->port,
1862 ZFCP_STATUS_COMMON_ACCESS_BOXED);
1863 zfcp_erp_port_reopen(zfcp_sdev->port,
1864 ZFCP_STATUS_COMMON_ERP_FAILED, "fscuh_3");
1865 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1867 case FSF_ADAPTER_STATUS_AVAILABLE:
1868 switch (req->qtcb->header.fsf_status_qual.word[0]) {
1869 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1870 zfcp_fc_test_link(zfcp_sdev->port);
1872 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1873 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1878 atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, &zfcp_sdev->status);
1884 * zfcp_fsf_close_LUN - close LUN
1885 * @erp_action: pointer to erp_action triggering the "close LUN"
1886 * Returns: 0 on success, error otherwise
1888 int zfcp_fsf_close_lun(struct zfcp_erp_action *erp_action)
1890 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1891 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(erp_action->sdev);
1892 struct zfcp_fsf_req *req;
1895 spin_lock_irq(&qdio->req_q_lock);
1896 if (zfcp_qdio_sbal_get(qdio))
1899 req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_LUN,
1900 SBAL_FLAGS0_TYPE_READ,
1901 qdio->adapter->pool.erp_req);
1904 retval = PTR_ERR(req);
1908 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1909 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1911 req->qtcb->header.port_handle = erp_action->port->handle;
1912 req->qtcb->header.lun_handle = zfcp_sdev->lun_handle;
1913 req->handler = zfcp_fsf_close_lun_handler;
1914 req->data = erp_action->sdev;
1915 req->erp_action = erp_action;
1916 erp_action->fsf_req_id = req->req_id;
1918 zfcp_fsf_start_erp_timer(req);
1919 retval = zfcp_fsf_req_send(req);
1921 zfcp_fsf_req_free(req);
1922 erp_action->fsf_req_id = 0;
1925 spin_unlock_irq(&qdio->req_q_lock);
1929 static void zfcp_fsf_update_lat(struct fsf_latency_record *lat_rec, u32 lat)
1931 lat_rec->sum += lat;
1932 lat_rec->min = min(lat_rec->min, lat);
1933 lat_rec->max = max(lat_rec->max, lat);
1936 static void zfcp_fsf_req_trace(struct zfcp_fsf_req *req, struct scsi_cmnd *scsi)
1938 struct fsf_qual_latency_info *lat_in;
1939 struct latency_cont *lat = NULL;
1940 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scsi->device);
1941 struct zfcp_blk_drv_data blktrc;
1942 int ticks = req->adapter->timer_ticks;
1944 lat_in = &req->qtcb->prefix.prot_status_qual.latency_info;
1947 blktrc.magic = ZFCP_BLK_DRV_DATA_MAGIC;
1948 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1949 blktrc.flags |= ZFCP_BLK_REQ_ERROR;
1950 blktrc.inb_usage = 0;
1951 blktrc.outb_usage = req->qdio_req.qdio_outb_usage;
1953 if (req->adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA &&
1954 !(req->status & ZFCP_STATUS_FSFREQ_ERROR)) {
1955 blktrc.flags |= ZFCP_BLK_LAT_VALID;
1956 blktrc.channel_lat = lat_in->channel_lat * ticks;
1957 blktrc.fabric_lat = lat_in->fabric_lat * ticks;
1959 switch (req->qtcb->bottom.io.data_direction) {
1960 case FSF_DATADIR_DIF_READ_STRIP:
1961 case FSF_DATADIR_DIF_READ_CONVERT:
1962 case FSF_DATADIR_READ:
1963 lat = &zfcp_sdev->latencies.read;
1965 case FSF_DATADIR_DIF_WRITE_INSERT:
1966 case FSF_DATADIR_DIF_WRITE_CONVERT:
1967 case FSF_DATADIR_WRITE:
1968 lat = &zfcp_sdev->latencies.write;
1970 case FSF_DATADIR_CMND:
1971 lat = &zfcp_sdev->latencies.cmd;
1976 spin_lock(&zfcp_sdev->latencies.lock);
1977 zfcp_fsf_update_lat(&lat->channel, lat_in->channel_lat);
1978 zfcp_fsf_update_lat(&lat->fabric, lat_in->fabric_lat);
1980 spin_unlock(&zfcp_sdev->latencies.lock);
1984 blk_add_driver_data(scsi->request->q, scsi->request, &blktrc,
1988 static void zfcp_fsf_fcp_handler_common(struct zfcp_fsf_req *req)
1990 struct scsi_cmnd *scmnd = req->data;
1991 struct scsi_device *sdev = scmnd->device;
1992 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
1993 struct fsf_qtcb_header *header = &req->qtcb->header;
1995 if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR))
1998 switch (header->fsf_status) {
1999 case FSF_HANDLE_MISMATCH:
2000 case FSF_PORT_HANDLE_NOT_VALID:
2001 zfcp_erp_adapter_reopen(zfcp_sdev->port->adapter, 0, "fssfch1");
2002 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2004 case FSF_FCPLUN_NOT_VALID:
2005 case FSF_LUN_HANDLE_NOT_VALID:
2006 zfcp_erp_port_reopen(zfcp_sdev->port, 0, "fssfch2");
2007 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2009 case FSF_SERVICE_CLASS_NOT_SUPPORTED:
2010 zfcp_fsf_class_not_supp(req);
2012 case FSF_ACCESS_DENIED:
2013 zfcp_cfdc_lun_denied(sdev, &header->fsf_status_qual);
2014 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2016 case FSF_DIRECTION_INDICATOR_NOT_VALID:
2017 dev_err(&req->adapter->ccw_device->dev,
2018 "Incorrect direction %d, LUN 0x%016Lx on port "
2019 "0x%016Lx closed\n",
2020 req->qtcb->bottom.io.data_direction,
2021 (unsigned long long)zfcp_scsi_dev_lun(sdev),
2022 (unsigned long long)zfcp_sdev->port->wwpn);
2023 zfcp_erp_adapter_shutdown(zfcp_sdev->port->adapter, 0,
2025 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2027 case FSF_CMND_LENGTH_NOT_VALID:
2028 dev_err(&req->adapter->ccw_device->dev,
2029 "Incorrect CDB length %d, LUN 0x%016Lx on "
2030 "port 0x%016Lx closed\n",
2031 req->qtcb->bottom.io.fcp_cmnd_length,
2032 (unsigned long long)zfcp_scsi_dev_lun(sdev),
2033 (unsigned long long)zfcp_sdev->port->wwpn);
2034 zfcp_erp_adapter_shutdown(zfcp_sdev->port->adapter, 0,
2036 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2038 case FSF_PORT_BOXED:
2039 zfcp_erp_set_port_status(zfcp_sdev->port,
2040 ZFCP_STATUS_COMMON_ACCESS_BOXED);
2041 zfcp_erp_port_reopen(zfcp_sdev->port,
2042 ZFCP_STATUS_COMMON_ERP_FAILED, "fssfch5");
2043 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2046 zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_ACCESS_BOXED);
2047 zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED,
2049 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2051 case FSF_ADAPTER_STATUS_AVAILABLE:
2052 if (header->fsf_status_qual.word[0] ==
2053 FSF_SQ_INVOKE_LINK_TEST_PROCEDURE)
2054 zfcp_fc_test_link(zfcp_sdev->port);
2055 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2060 static void zfcp_fsf_fcp_cmnd_handler(struct zfcp_fsf_req *req)
2062 struct scsi_cmnd *scpnt;
2063 struct fcp_resp_with_ext *fcp_rsp;
2064 unsigned long flags;
2066 read_lock_irqsave(&req->adapter->abort_lock, flags);
2069 if (unlikely(!scpnt)) {
2070 read_unlock_irqrestore(&req->adapter->abort_lock, flags);
2074 zfcp_fsf_fcp_handler_common(req);
2076 if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) {
2077 set_host_byte(scpnt, DID_TRANSPORT_DISRUPTED);
2078 goto skip_fsfstatus;
2081 switch (req->qtcb->header.fsf_status) {
2082 case FSF_INCONSISTENT_PROT_DATA:
2083 case FSF_INVALID_PROT_PARM:
2084 set_host_byte(scpnt, DID_ERROR);
2085 goto skip_fsfstatus;
2086 case FSF_BLOCK_GUARD_CHECK_FAILURE:
2087 zfcp_scsi_dif_sense_error(scpnt, 0x1);
2088 goto skip_fsfstatus;
2089 case FSF_APP_TAG_CHECK_FAILURE:
2090 zfcp_scsi_dif_sense_error(scpnt, 0x2);
2091 goto skip_fsfstatus;
2092 case FSF_REF_TAG_CHECK_FAILURE:
2093 zfcp_scsi_dif_sense_error(scpnt, 0x3);
2094 goto skip_fsfstatus;
2096 fcp_rsp = (struct fcp_resp_with_ext *) &req->qtcb->bottom.io.fcp_rsp;
2097 zfcp_fc_eval_fcp_rsp(fcp_rsp, scpnt);
2100 zfcp_fsf_req_trace(req, scpnt);
2101 zfcp_dbf_scsi_result(scpnt, req);
2103 scpnt->host_scribble = NULL;
2104 (scpnt->scsi_done) (scpnt);
2106 * We must hold this lock until scsi_done has been called.
2107 * Otherwise we may call scsi_done after abort regarding this
2108 * command has completed.
2109 * Note: scsi_done must not block!
2111 read_unlock_irqrestore(&req->adapter->abort_lock, flags);
2114 static int zfcp_fsf_set_data_dir(struct scsi_cmnd *scsi_cmnd, u32 *data_dir)
2116 switch (scsi_get_prot_op(scsi_cmnd)) {
2117 case SCSI_PROT_NORMAL:
2118 switch (scsi_cmnd->sc_data_direction) {
2120 *data_dir = FSF_DATADIR_CMND;
2122 case DMA_FROM_DEVICE:
2123 *data_dir = FSF_DATADIR_READ;
2126 *data_dir = FSF_DATADIR_WRITE;
2128 case DMA_BIDIRECTIONAL:
2133 case SCSI_PROT_READ_STRIP:
2134 *data_dir = FSF_DATADIR_DIF_READ_STRIP;
2136 case SCSI_PROT_WRITE_INSERT:
2137 *data_dir = FSF_DATADIR_DIF_WRITE_INSERT;
2139 case SCSI_PROT_READ_PASS:
2140 *data_dir = FSF_DATADIR_DIF_READ_CONVERT;
2142 case SCSI_PROT_WRITE_PASS:
2143 *data_dir = FSF_DATADIR_DIF_WRITE_CONVERT;
2153 * zfcp_fsf_fcp_cmnd - initiate an FCP command (for a SCSI command)
2154 * @scsi_cmnd: scsi command to be sent
2156 int zfcp_fsf_fcp_cmnd(struct scsi_cmnd *scsi_cmnd)
2158 struct zfcp_fsf_req *req;
2159 struct fcp_cmnd *fcp_cmnd;
2160 unsigned int sbtype = SBAL_FLAGS0_TYPE_READ;
2161 int real_bytes, retval = -EIO, dix_bytes = 0;
2162 struct scsi_device *sdev = scsi_cmnd->device;
2163 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
2164 struct zfcp_adapter *adapter = zfcp_sdev->port->adapter;
2165 struct zfcp_qdio *qdio = adapter->qdio;
2166 struct fsf_qtcb_bottom_io *io;
2167 unsigned long flags;
2169 if (unlikely(!(atomic_read(&zfcp_sdev->status) &
2170 ZFCP_STATUS_COMMON_UNBLOCKED)))
2173 spin_lock_irqsave(&qdio->req_q_lock, flags);
2174 if (atomic_read(&qdio->req_q_free) <= 0) {
2175 atomic_inc(&qdio->req_q_full);
2179 if (scsi_cmnd->sc_data_direction == DMA_TO_DEVICE)
2180 sbtype = SBAL_FLAGS0_TYPE_WRITE;
2182 req = zfcp_fsf_req_create(qdio, FSF_QTCB_FCP_CMND,
2183 sbtype, adapter->pool.scsi_req);
2186 retval = PTR_ERR(req);
2190 scsi_cmnd->host_scribble = (unsigned char *) req->req_id;
2192 io = &req->qtcb->bottom.io;
2193 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
2194 req->data = scsi_cmnd;
2195 req->handler = zfcp_fsf_fcp_cmnd_handler;
2196 req->qtcb->header.lun_handle = zfcp_sdev->lun_handle;
2197 req->qtcb->header.port_handle = zfcp_sdev->port->handle;
2198 io->service_class = FSF_CLASS_3;
2199 io->fcp_cmnd_length = FCP_CMND_LEN;
2201 if (scsi_get_prot_op(scsi_cmnd) != SCSI_PROT_NORMAL) {
2202 io->data_block_length = scsi_cmnd->device->sector_size;
2203 io->ref_tag_value = scsi_get_lba(scsi_cmnd) & 0xFFFFFFFF;
2206 zfcp_fsf_set_data_dir(scsi_cmnd, &io->data_direction);
2208 fcp_cmnd = (struct fcp_cmnd *) &req->qtcb->bottom.io.fcp_cmnd;
2209 zfcp_fc_scsi_to_fcp(fcp_cmnd, scsi_cmnd);
2211 if (scsi_prot_sg_count(scsi_cmnd)) {
2212 zfcp_qdio_set_data_div(qdio, &req->qdio_req,
2213 scsi_prot_sg_count(scsi_cmnd));
2214 dix_bytes = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req,
2215 scsi_prot_sglist(scsi_cmnd));
2216 io->prot_data_length = dix_bytes;
2219 real_bytes = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req,
2220 scsi_sglist(scsi_cmnd));
2222 if (unlikely(real_bytes < 0) || unlikely(dix_bytes < 0))
2223 goto failed_scsi_cmnd;
2225 zfcp_qdio_set_sbale_last(adapter->qdio, &req->qdio_req);
2227 retval = zfcp_fsf_req_send(req);
2228 if (unlikely(retval))
2229 goto failed_scsi_cmnd;
2234 zfcp_fsf_req_free(req);
2235 scsi_cmnd->host_scribble = NULL;
2237 spin_unlock_irqrestore(&qdio->req_q_lock, flags);
2241 static void zfcp_fsf_fcp_task_mgmt_handler(struct zfcp_fsf_req *req)
2243 struct fcp_resp_with_ext *fcp_rsp;
2244 struct fcp_resp_rsp_info *rsp_info;
2246 zfcp_fsf_fcp_handler_common(req);
2248 fcp_rsp = (struct fcp_resp_with_ext *) &req->qtcb->bottom.io.fcp_rsp;
2249 rsp_info = (struct fcp_resp_rsp_info *) &fcp_rsp[1];
2251 if ((rsp_info->rsp_code != FCP_TMF_CMPL) ||
2252 (req->status & ZFCP_STATUS_FSFREQ_ERROR))
2253 req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED;
2257 * zfcp_fsf_fcp_task_mgmt - send SCSI task management command
2258 * @scmnd: SCSI command to send the task management command for
2259 * @tm_flags: unsigned byte for task management flags
2260 * Returns: on success pointer to struct fsf_req, NULL otherwise
2262 struct zfcp_fsf_req *zfcp_fsf_fcp_task_mgmt(struct scsi_cmnd *scmnd,
2265 struct zfcp_fsf_req *req = NULL;
2266 struct fcp_cmnd *fcp_cmnd;
2267 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scmnd->device);
2268 struct zfcp_qdio *qdio = zfcp_sdev->port->adapter->qdio;
2270 if (unlikely(!(atomic_read(&zfcp_sdev->status) &
2271 ZFCP_STATUS_COMMON_UNBLOCKED)))
2274 spin_lock_irq(&qdio->req_q_lock);
2275 if (zfcp_qdio_sbal_get(qdio))
2278 req = zfcp_fsf_req_create(qdio, FSF_QTCB_FCP_CMND,
2279 SBAL_FLAGS0_TYPE_WRITE,
2280 qdio->adapter->pool.scsi_req);
2287 req->status |= ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT;
2289 req->handler = zfcp_fsf_fcp_task_mgmt_handler;
2290 req->qtcb->header.lun_handle = zfcp_sdev->lun_handle;
2291 req->qtcb->header.port_handle = zfcp_sdev->port->handle;
2292 req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND;
2293 req->qtcb->bottom.io.service_class = FSF_CLASS_3;
2294 req->qtcb->bottom.io.fcp_cmnd_length = FCP_CMND_LEN;
2296 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
2298 fcp_cmnd = (struct fcp_cmnd *) &req->qtcb->bottom.io.fcp_cmnd;
2299 zfcp_fc_fcp_tm(fcp_cmnd, scmnd->device, tm_flags);
2301 zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT);
2302 if (!zfcp_fsf_req_send(req))
2305 zfcp_fsf_req_free(req);
2308 spin_unlock_irq(&qdio->req_q_lock);
2312 static void zfcp_fsf_control_file_handler(struct zfcp_fsf_req *req)
2317 * zfcp_fsf_control_file - control file upload/download
2318 * @adapter: pointer to struct zfcp_adapter
2319 * @fsf_cfdc: pointer to struct zfcp_fsf_cfdc
2320 * Returns: on success pointer to struct zfcp_fsf_req, NULL otherwise
2322 struct zfcp_fsf_req *zfcp_fsf_control_file(struct zfcp_adapter *adapter,
2323 struct zfcp_fsf_cfdc *fsf_cfdc)
2325 struct zfcp_qdio *qdio = adapter->qdio;
2326 struct zfcp_fsf_req *req = NULL;
2327 struct fsf_qtcb_bottom_support *bottom;
2328 int direction, retval = -EIO, bytes;
2330 if (!(adapter->adapter_features & FSF_FEATURE_CFDC))
2331 return ERR_PTR(-EOPNOTSUPP);
2333 switch (fsf_cfdc->command) {
2334 case FSF_QTCB_DOWNLOAD_CONTROL_FILE:
2335 direction = SBAL_FLAGS0_TYPE_WRITE;
2337 case FSF_QTCB_UPLOAD_CONTROL_FILE:
2338 direction = SBAL_FLAGS0_TYPE_READ;
2341 return ERR_PTR(-EINVAL);
2344 spin_lock_irq(&qdio->req_q_lock);
2345 if (zfcp_qdio_sbal_get(qdio))
2348 req = zfcp_fsf_req_create(qdio, fsf_cfdc->command, direction, NULL);
2354 req->handler = zfcp_fsf_control_file_handler;
2356 bottom = &req->qtcb->bottom.support;
2357 bottom->operation_subtype = FSF_CFDC_OPERATION_SUBTYPE;
2358 bottom->option = fsf_cfdc->option;
2360 bytes = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, fsf_cfdc->sg);
2362 if (bytes != ZFCP_CFDC_MAX_SIZE) {
2363 zfcp_fsf_req_free(req);
2366 zfcp_qdio_set_sbale_last(adapter->qdio, &req->qdio_req);
2368 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
2369 retval = zfcp_fsf_req_send(req);
2371 spin_unlock_irq(&qdio->req_q_lock);
2374 wait_for_completion(&req->completion);
2377 return ERR_PTR(retval);
2381 * zfcp_fsf_reqid_check - validate req_id contained in SBAL returned by QDIO
2382 * @adapter: pointer to struct zfcp_adapter
2383 * @sbal_idx: response queue index of SBAL to be processed
2385 void zfcp_fsf_reqid_check(struct zfcp_qdio *qdio, int sbal_idx)
2387 struct zfcp_adapter *adapter = qdio->adapter;
2388 struct qdio_buffer *sbal = qdio->res_q[sbal_idx];
2389 struct qdio_buffer_element *sbale;
2390 struct zfcp_fsf_req *fsf_req;
2391 unsigned long req_id;
2394 for (idx = 0; idx < QDIO_MAX_ELEMENTS_PER_BUFFER; idx++) {
2396 sbale = &sbal->element[idx];
2397 req_id = (unsigned long) sbale->addr;
2398 fsf_req = zfcp_reqlist_find_rm(adapter->req_list, req_id);
2402 * Unknown request means that we have potentially memory
2403 * corruption and must stop the machine immediately.
2405 zfcp_qdio_siosl(adapter);
2406 panic("error: unknown req_id (%lx) on adapter %s.\n",
2407 req_id, dev_name(&adapter->ccw_device->dev));
2410 fsf_req->qdio_req.sbal_response = sbal_idx;
2411 zfcp_fsf_req_complete(fsf_req);
2413 if (likely(sbale->flags & SBAL_FLAGS_LAST_ENTRY))
2418 struct zfcp_fsf_req *zfcp_fsf_get_req(struct zfcp_qdio *qdio,
2419 struct qdio_buffer *sbal)
2421 struct qdio_buffer_element *sbale = &sbal->element[0];
2422 u64 req_id = (unsigned long) sbale->addr;
2424 return zfcp_reqlist_find(qdio->adapter->req_list, req_id);