4 * Implementation of FSF commands.
6 * Copyright IBM Corp. 2002, 2015
9 #define KMSG_COMPONENT "zfcp"
10 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
12 #include <linux/blktrace_api.h>
13 #include <linux/slab.h>
14 #include <scsi/fc/fc_els.h>
18 #include "zfcp_qdio.h"
19 #include "zfcp_reqlist.h"
21 struct kmem_cache *zfcp_fsf_qtcb_cache;
23 static void zfcp_fsf_request_timeout_handler(unsigned long data)
25 struct zfcp_adapter *adapter = (struct zfcp_adapter *) data;
26 zfcp_qdio_siosl(adapter);
27 zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED,
31 static void zfcp_fsf_start_timer(struct zfcp_fsf_req *fsf_req,
32 unsigned long timeout)
34 fsf_req->timer.function = zfcp_fsf_request_timeout_handler;
35 fsf_req->timer.data = (unsigned long) fsf_req->adapter;
36 fsf_req->timer.expires = jiffies + timeout;
37 add_timer(&fsf_req->timer);
40 static void zfcp_fsf_start_erp_timer(struct zfcp_fsf_req *fsf_req)
42 BUG_ON(!fsf_req->erp_action);
43 fsf_req->timer.function = zfcp_erp_timeout_handler;
44 fsf_req->timer.data = (unsigned long) fsf_req->erp_action;
45 fsf_req->timer.expires = jiffies + 30 * HZ;
46 add_timer(&fsf_req->timer);
49 /* association between FSF command and FSF QTCB type */
50 static u32 fsf_qtcb_type[] = {
51 [FSF_QTCB_FCP_CMND] = FSF_IO_COMMAND,
52 [FSF_QTCB_ABORT_FCP_CMND] = FSF_SUPPORT_COMMAND,
53 [FSF_QTCB_OPEN_PORT_WITH_DID] = FSF_SUPPORT_COMMAND,
54 [FSF_QTCB_OPEN_LUN] = FSF_SUPPORT_COMMAND,
55 [FSF_QTCB_CLOSE_LUN] = FSF_SUPPORT_COMMAND,
56 [FSF_QTCB_CLOSE_PORT] = FSF_SUPPORT_COMMAND,
57 [FSF_QTCB_CLOSE_PHYSICAL_PORT] = FSF_SUPPORT_COMMAND,
58 [FSF_QTCB_SEND_ELS] = FSF_SUPPORT_COMMAND,
59 [FSF_QTCB_SEND_GENERIC] = FSF_SUPPORT_COMMAND,
60 [FSF_QTCB_EXCHANGE_CONFIG_DATA] = FSF_CONFIG_COMMAND,
61 [FSF_QTCB_EXCHANGE_PORT_DATA] = FSF_PORT_COMMAND,
62 [FSF_QTCB_DOWNLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND,
63 [FSF_QTCB_UPLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND
66 static void zfcp_fsf_class_not_supp(struct zfcp_fsf_req *req)
68 dev_err(&req->adapter->ccw_device->dev, "FCP device not "
69 "operational because of an unsupported FC class\n");
70 zfcp_erp_adapter_shutdown(req->adapter, 0, "fscns_1");
71 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
75 * zfcp_fsf_req_free - free memory used by fsf request
76 * @fsf_req: pointer to struct zfcp_fsf_req
78 void zfcp_fsf_req_free(struct zfcp_fsf_req *req)
80 if (likely(req->pool)) {
81 if (likely(req->qtcb))
82 mempool_free(req->qtcb, req->adapter->pool.qtcb_pool);
83 mempool_free(req, req->pool);
87 if (likely(req->qtcb))
88 kmem_cache_free(zfcp_fsf_qtcb_cache, req->qtcb);
92 static void zfcp_fsf_status_read_port_closed(struct zfcp_fsf_req *req)
95 struct fsf_status_read_buffer *sr_buf = req->data;
96 struct zfcp_adapter *adapter = req->adapter;
97 struct zfcp_port *port;
98 int d_id = ntoh24(sr_buf->d_id);
100 read_lock_irqsave(&adapter->port_list_lock, flags);
101 list_for_each_entry(port, &adapter->port_list, list)
102 if (port->d_id == d_id) {
103 zfcp_erp_port_reopen(port, 0, "fssrpc1");
106 read_unlock_irqrestore(&adapter->port_list_lock, flags);
109 static void zfcp_fsf_link_down_info_eval(struct zfcp_fsf_req *req,
110 struct fsf_link_down_info *link_down)
112 struct zfcp_adapter *adapter = req->adapter;
114 if (atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED)
117 atomic_or(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED, &adapter->status);
119 zfcp_scsi_schedule_rports_block(adapter);
124 switch (link_down->error_code) {
125 case FSF_PSQ_LINK_NO_LIGHT:
126 dev_warn(&req->adapter->ccw_device->dev,
127 "There is no light signal from the local "
128 "fibre channel cable\n");
130 case FSF_PSQ_LINK_WRAP_PLUG:
131 dev_warn(&req->adapter->ccw_device->dev,
132 "There is a wrap plug instead of a fibre "
135 case FSF_PSQ_LINK_NO_FCP:
136 dev_warn(&req->adapter->ccw_device->dev,
137 "The adjacent fibre channel node does not "
140 case FSF_PSQ_LINK_FIRMWARE_UPDATE:
141 dev_warn(&req->adapter->ccw_device->dev,
142 "The FCP device is suspended because of a "
143 "firmware update\n");
145 case FSF_PSQ_LINK_INVALID_WWPN:
146 dev_warn(&req->adapter->ccw_device->dev,
147 "The FCP device detected a WWPN that is "
148 "duplicate or not valid\n");
150 case FSF_PSQ_LINK_NO_NPIV_SUPPORT:
151 dev_warn(&req->adapter->ccw_device->dev,
152 "The fibre channel fabric does not support NPIV\n");
154 case FSF_PSQ_LINK_NO_FCP_RESOURCES:
155 dev_warn(&req->adapter->ccw_device->dev,
156 "The FCP adapter cannot support more NPIV ports\n");
158 case FSF_PSQ_LINK_NO_FABRIC_RESOURCES:
159 dev_warn(&req->adapter->ccw_device->dev,
160 "The adjacent switch cannot support "
161 "more NPIV ports\n");
163 case FSF_PSQ_LINK_FABRIC_LOGIN_UNABLE:
164 dev_warn(&req->adapter->ccw_device->dev,
165 "The FCP adapter could not log in to the "
166 "fibre channel fabric\n");
168 case FSF_PSQ_LINK_WWPN_ASSIGNMENT_CORRUPTED:
169 dev_warn(&req->adapter->ccw_device->dev,
170 "The WWPN assignment file on the FCP adapter "
171 "has been damaged\n");
173 case FSF_PSQ_LINK_MODE_TABLE_CURRUPTED:
174 dev_warn(&req->adapter->ccw_device->dev,
175 "The mode table on the FCP adapter "
176 "has been damaged\n");
178 case FSF_PSQ_LINK_NO_WWPN_ASSIGNMENT:
179 dev_warn(&req->adapter->ccw_device->dev,
180 "All NPIV ports on the FCP adapter have "
184 dev_warn(&req->adapter->ccw_device->dev,
185 "The link between the FCP adapter and "
186 "the FC fabric is down\n");
189 zfcp_erp_set_adapter_status(adapter, ZFCP_STATUS_COMMON_ERP_FAILED);
192 static void zfcp_fsf_status_read_link_down(struct zfcp_fsf_req *req)
194 struct fsf_status_read_buffer *sr_buf = req->data;
195 struct fsf_link_down_info *ldi =
196 (struct fsf_link_down_info *) &sr_buf->payload;
198 switch (sr_buf->status_subtype) {
199 case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK:
200 zfcp_fsf_link_down_info_eval(req, ldi);
202 case FSF_STATUS_READ_SUB_FDISC_FAILED:
203 zfcp_fsf_link_down_info_eval(req, ldi);
205 case FSF_STATUS_READ_SUB_FIRMWARE_UPDATE:
206 zfcp_fsf_link_down_info_eval(req, NULL);
210 static void zfcp_fsf_status_read_handler(struct zfcp_fsf_req *req)
212 struct zfcp_adapter *adapter = req->adapter;
213 struct fsf_status_read_buffer *sr_buf = req->data;
215 if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) {
216 zfcp_dbf_hba_fsf_uss("fssrh_1", req);
217 mempool_free(virt_to_page(sr_buf), adapter->pool.sr_data);
218 zfcp_fsf_req_free(req);
222 zfcp_dbf_hba_fsf_uss("fssrh_4", req);
224 switch (sr_buf->status_type) {
225 case FSF_STATUS_READ_PORT_CLOSED:
226 zfcp_fsf_status_read_port_closed(req);
228 case FSF_STATUS_READ_INCOMING_ELS:
229 zfcp_fc_incoming_els(req);
231 case FSF_STATUS_READ_SENSE_DATA_AVAIL:
233 case FSF_STATUS_READ_BIT_ERROR_THRESHOLD:
234 dev_warn(&adapter->ccw_device->dev,
235 "The error threshold for checksum statistics "
236 "has been exceeded\n");
237 zfcp_dbf_hba_bit_err("fssrh_3", req);
239 case FSF_STATUS_READ_LINK_DOWN:
240 zfcp_fsf_status_read_link_down(req);
241 zfcp_fc_enqueue_event(adapter, FCH_EVT_LINKDOWN, 0);
243 case FSF_STATUS_READ_LINK_UP:
244 dev_info(&adapter->ccw_device->dev,
245 "The local link has been restored\n");
246 /* All ports should be marked as ready to run again */
247 zfcp_erp_set_adapter_status(adapter,
248 ZFCP_STATUS_COMMON_RUNNING);
249 zfcp_erp_adapter_reopen(adapter,
250 ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED |
251 ZFCP_STATUS_COMMON_ERP_FAILED,
253 zfcp_fc_enqueue_event(adapter, FCH_EVT_LINKUP, 0);
256 case FSF_STATUS_READ_NOTIFICATION_LOST:
257 if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_INCOMING_ELS)
258 zfcp_fc_conditional_port_scan(adapter);
260 case FSF_STATUS_READ_FEATURE_UPDATE_ALERT:
261 adapter->adapter_features = sr_buf->payload.word[0];
265 mempool_free(virt_to_page(sr_buf), adapter->pool.sr_data);
266 zfcp_fsf_req_free(req);
268 atomic_inc(&adapter->stat_miss);
269 queue_work(adapter->work_queue, &adapter->stat_work);
272 static void zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req *req)
274 switch (req->qtcb->header.fsf_status_qual.word[0]) {
275 case FSF_SQ_FCP_RSP_AVAILABLE:
276 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
277 case FSF_SQ_NO_RETRY_POSSIBLE:
278 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
280 case FSF_SQ_COMMAND_ABORTED:
282 case FSF_SQ_NO_RECOM:
283 dev_err(&req->adapter->ccw_device->dev,
284 "The FCP adapter reported a problem "
285 "that cannot be recovered\n");
286 zfcp_qdio_siosl(req->adapter);
287 zfcp_erp_adapter_shutdown(req->adapter, 0, "fsfsqe1");
290 /* all non-return stats set FSFREQ_ERROR*/
291 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
294 static void zfcp_fsf_fsfstatus_eval(struct zfcp_fsf_req *req)
296 if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR))
299 switch (req->qtcb->header.fsf_status) {
300 case FSF_UNKNOWN_COMMAND:
301 dev_err(&req->adapter->ccw_device->dev,
302 "The FCP adapter does not recognize the command 0x%x\n",
303 req->qtcb->header.fsf_command);
304 zfcp_erp_adapter_shutdown(req->adapter, 0, "fsfse_1");
305 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
307 case FSF_ADAPTER_STATUS_AVAILABLE:
308 zfcp_fsf_fsfstatus_qual_eval(req);
313 static void zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *req)
315 struct zfcp_adapter *adapter = req->adapter;
316 struct fsf_qtcb *qtcb = req->qtcb;
317 union fsf_prot_status_qual *psq = &qtcb->prefix.prot_status_qual;
319 zfcp_dbf_hba_fsf_response(req);
321 if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) {
322 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
326 switch (qtcb->prefix.prot_status) {
328 case FSF_PROT_FSF_STATUS_PRESENTED:
330 case FSF_PROT_QTCB_VERSION_ERROR:
331 dev_err(&adapter->ccw_device->dev,
332 "QTCB version 0x%x not supported by FCP adapter "
333 "(0x%x to 0x%x)\n", FSF_QTCB_CURRENT_VERSION,
334 psq->word[0], psq->word[1]);
335 zfcp_erp_adapter_shutdown(adapter, 0, "fspse_1");
337 case FSF_PROT_ERROR_STATE:
338 case FSF_PROT_SEQ_NUMB_ERROR:
339 zfcp_erp_adapter_reopen(adapter, 0, "fspse_2");
340 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
342 case FSF_PROT_UNSUPP_QTCB_TYPE:
343 dev_err(&adapter->ccw_device->dev,
344 "The QTCB type is not supported by the FCP adapter\n");
345 zfcp_erp_adapter_shutdown(adapter, 0, "fspse_3");
347 case FSF_PROT_HOST_CONNECTION_INITIALIZING:
348 atomic_or(ZFCP_STATUS_ADAPTER_HOST_CON_INIT,
351 case FSF_PROT_DUPLICATE_REQUEST_ID:
352 dev_err(&adapter->ccw_device->dev,
353 "0x%Lx is an ambiguous request identifier\n",
354 (unsigned long long)qtcb->bottom.support.req_handle);
355 zfcp_erp_adapter_shutdown(adapter, 0, "fspse_4");
357 case FSF_PROT_LINK_DOWN:
358 zfcp_fsf_link_down_info_eval(req, &psq->link_down_info);
359 /* go through reopen to flush pending requests */
360 zfcp_erp_adapter_reopen(adapter, 0, "fspse_6");
362 case FSF_PROT_REEST_QUEUE:
363 /* All ports should be marked as ready to run again */
364 zfcp_erp_set_adapter_status(adapter,
365 ZFCP_STATUS_COMMON_RUNNING);
366 zfcp_erp_adapter_reopen(adapter,
367 ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED |
368 ZFCP_STATUS_COMMON_ERP_FAILED,
372 dev_err(&adapter->ccw_device->dev,
373 "0x%x is not a valid transfer protocol status\n",
374 qtcb->prefix.prot_status);
375 zfcp_qdio_siosl(adapter);
376 zfcp_erp_adapter_shutdown(adapter, 0, "fspse_9");
378 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
382 * zfcp_fsf_req_complete - process completion of a FSF request
383 * @fsf_req: The FSF request that has been completed.
385 * When a request has been completed either from the FCP adapter,
386 * or it has been dismissed due to a queue shutdown, this function
387 * is called to process the completion status and trigger further
388 * events related to the FSF request.
390 static void zfcp_fsf_req_complete(struct zfcp_fsf_req *req)
392 if (unlikely(req->fsf_command == FSF_QTCB_UNSOLICITED_STATUS)) {
393 zfcp_fsf_status_read_handler(req);
397 del_timer(&req->timer);
398 zfcp_fsf_protstatus_eval(req);
399 zfcp_fsf_fsfstatus_eval(req);
403 zfcp_erp_notify(req->erp_action, 0);
405 if (likely(req->status & ZFCP_STATUS_FSFREQ_CLEANUP))
406 zfcp_fsf_req_free(req);
408 complete(&req->completion);
412 * zfcp_fsf_req_dismiss_all - dismiss all fsf requests
413 * @adapter: pointer to struct zfcp_adapter
415 * Never ever call this without shutting down the adapter first.
416 * Otherwise the adapter would continue using and corrupting s390 storage.
417 * Included BUG_ON() call to ensure this is done.
418 * ERP is supposed to be the only user of this function.
420 void zfcp_fsf_req_dismiss_all(struct zfcp_adapter *adapter)
422 struct zfcp_fsf_req *req, *tmp;
423 LIST_HEAD(remove_queue);
425 BUG_ON(atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP);
426 zfcp_reqlist_move(adapter->req_list, &remove_queue);
428 list_for_each_entry_safe(req, tmp, &remove_queue, list) {
429 list_del(&req->list);
430 req->status |= ZFCP_STATUS_FSFREQ_DISMISSED;
431 zfcp_fsf_req_complete(req);
435 #define ZFCP_FSF_PORTSPEED_1GBIT (1 << 0)
436 #define ZFCP_FSF_PORTSPEED_2GBIT (1 << 1)
437 #define ZFCP_FSF_PORTSPEED_4GBIT (1 << 2)
438 #define ZFCP_FSF_PORTSPEED_10GBIT (1 << 3)
439 #define ZFCP_FSF_PORTSPEED_8GBIT (1 << 4)
440 #define ZFCP_FSF_PORTSPEED_16GBIT (1 << 5)
441 #define ZFCP_FSF_PORTSPEED_NOT_NEGOTIATED (1 << 15)
443 static u32 zfcp_fsf_convert_portspeed(u32 fsf_speed)
446 if (fsf_speed & ZFCP_FSF_PORTSPEED_1GBIT)
447 fdmi_speed |= FC_PORTSPEED_1GBIT;
448 if (fsf_speed & ZFCP_FSF_PORTSPEED_2GBIT)
449 fdmi_speed |= FC_PORTSPEED_2GBIT;
450 if (fsf_speed & ZFCP_FSF_PORTSPEED_4GBIT)
451 fdmi_speed |= FC_PORTSPEED_4GBIT;
452 if (fsf_speed & ZFCP_FSF_PORTSPEED_10GBIT)
453 fdmi_speed |= FC_PORTSPEED_10GBIT;
454 if (fsf_speed & ZFCP_FSF_PORTSPEED_8GBIT)
455 fdmi_speed |= FC_PORTSPEED_8GBIT;
456 if (fsf_speed & ZFCP_FSF_PORTSPEED_16GBIT)
457 fdmi_speed |= FC_PORTSPEED_16GBIT;
458 if (fsf_speed & ZFCP_FSF_PORTSPEED_NOT_NEGOTIATED)
459 fdmi_speed |= FC_PORTSPEED_NOT_NEGOTIATED;
463 static int zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req *req)
465 struct fsf_qtcb_bottom_config *bottom = &req->qtcb->bottom.config;
466 struct zfcp_adapter *adapter = req->adapter;
467 struct Scsi_Host *shost = adapter->scsi_host;
468 struct fc_els_flogi *nsp, *plogi;
470 /* adjust pointers for missing command code */
471 nsp = (struct fc_els_flogi *) ((u8 *)&bottom->nport_serv_param
473 plogi = (struct fc_els_flogi *) ((u8 *)&bottom->plogi_payload
477 memcpy(req->data, bottom, sizeof(*bottom));
479 fc_host_port_name(shost) = nsp->fl_wwpn;
480 fc_host_node_name(shost) = nsp->fl_wwnn;
481 fc_host_supported_classes(shost) = FC_COS_CLASS2 | FC_COS_CLASS3;
483 adapter->timer_ticks = bottom->timer_interval & ZFCP_FSF_TIMER_INT_MASK;
484 adapter->stat_read_buf_num = max(bottom->status_read_buf_num,
485 (u16)FSF_STATUS_READS_RECOM);
487 if (fc_host_permanent_port_name(shost) == -1)
488 fc_host_permanent_port_name(shost) = fc_host_port_name(shost);
490 zfcp_scsi_set_prot(adapter);
492 /* no error return above here, otherwise must fix call chains */
493 /* do not evaluate invalid fields */
494 if (req->qtcb->header.fsf_status == FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE)
497 fc_host_port_id(shost) = ntoh24(bottom->s_id);
498 fc_host_speed(shost) =
499 zfcp_fsf_convert_portspeed(bottom->fc_link_speed);
501 adapter->hydra_version = bottom->adapter_type;
503 switch (bottom->fc_topology) {
505 adapter->peer_d_id = ntoh24(bottom->peer_d_id);
506 adapter->peer_wwpn = plogi->fl_wwpn;
507 adapter->peer_wwnn = plogi->fl_wwnn;
508 fc_host_port_type(shost) = FC_PORTTYPE_PTP;
510 case FSF_TOPO_FABRIC:
511 if (bottom->connection_features & FSF_FEATURE_NPIV_MODE)
512 fc_host_port_type(shost) = FC_PORTTYPE_NPIV;
514 fc_host_port_type(shost) = FC_PORTTYPE_NPORT;
517 fc_host_port_type(shost) = FC_PORTTYPE_NLPORT;
520 dev_err(&adapter->ccw_device->dev,
521 "Unknown or unsupported arbitrated loop "
522 "fibre channel topology detected\n");
523 zfcp_erp_adapter_shutdown(adapter, 0, "fsece_1");
530 static void zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *req)
532 struct zfcp_adapter *adapter = req->adapter;
533 struct fsf_qtcb *qtcb = req->qtcb;
534 struct fsf_qtcb_bottom_config *bottom = &qtcb->bottom.config;
535 struct Scsi_Host *shost = adapter->scsi_host;
537 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
540 adapter->fsf_lic_version = bottom->lic_version;
541 adapter->adapter_features = bottom->adapter_features;
542 adapter->connection_features = bottom->connection_features;
543 adapter->peer_wwpn = 0;
544 adapter->peer_wwnn = 0;
545 adapter->peer_d_id = 0;
547 switch (qtcb->header.fsf_status) {
549 if (zfcp_fsf_exchange_config_evaluate(req))
552 if (bottom->max_qtcb_size < sizeof(struct fsf_qtcb)) {
553 dev_err(&adapter->ccw_device->dev,
554 "FCP adapter maximum QTCB size (%d bytes) "
556 bottom->max_qtcb_size);
557 zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh1");
560 atomic_or(ZFCP_STATUS_ADAPTER_XCONFIG_OK,
563 case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE:
564 fc_host_node_name(shost) = 0;
565 fc_host_port_name(shost) = 0;
566 fc_host_port_id(shost) = 0;
567 fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN;
568 fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN;
569 adapter->hydra_version = 0;
571 /* avoids adapter shutdown to be able to recognize
572 * events such as LINK UP */
573 atomic_or(ZFCP_STATUS_ADAPTER_XCONFIG_OK,
575 zfcp_fsf_link_down_info_eval(req,
576 &qtcb->header.fsf_status_qual.link_down_info);
577 if (zfcp_fsf_exchange_config_evaluate(req))
581 zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh3");
585 if (adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT) {
586 adapter->hardware_version = bottom->hardware_version;
587 memcpy(fc_host_serial_number(shost), bottom->serial_number,
588 min(FC_SERIAL_NUMBER_SIZE, 17));
589 EBCASC(fc_host_serial_number(shost),
590 min(FC_SERIAL_NUMBER_SIZE, 17));
593 if (FSF_QTCB_CURRENT_VERSION < bottom->low_qtcb_version) {
594 dev_err(&adapter->ccw_device->dev,
595 "The FCP adapter only supports newer "
596 "control block versions\n");
597 zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh4");
600 if (FSF_QTCB_CURRENT_VERSION > bottom->high_qtcb_version) {
601 dev_err(&adapter->ccw_device->dev,
602 "The FCP adapter only supports older "
603 "control block versions\n");
604 zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh5");
608 static void zfcp_fsf_exchange_port_evaluate(struct zfcp_fsf_req *req)
610 struct zfcp_adapter *adapter = req->adapter;
611 struct fsf_qtcb_bottom_port *bottom = &req->qtcb->bottom.port;
612 struct Scsi_Host *shost = adapter->scsi_host;
615 memcpy(req->data, bottom, sizeof(*bottom));
617 if (adapter->connection_features & FSF_FEATURE_NPIV_MODE) {
618 fc_host_permanent_port_name(shost) = bottom->wwpn;
620 fc_host_permanent_port_name(shost) = fc_host_port_name(shost);
621 fc_host_maxframe_size(shost) = bottom->maximum_frame_size;
622 fc_host_supported_speeds(shost) =
623 zfcp_fsf_convert_portspeed(bottom->supported_speed);
624 memcpy(fc_host_supported_fc4s(shost), bottom->supported_fc4_types,
626 memcpy(fc_host_active_fc4s(shost), bottom->active_fc4_types,
630 static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *req)
632 struct fsf_qtcb *qtcb = req->qtcb;
634 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
637 switch (qtcb->header.fsf_status) {
639 zfcp_fsf_exchange_port_evaluate(req);
641 case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE:
642 zfcp_fsf_exchange_port_evaluate(req);
643 zfcp_fsf_link_down_info_eval(req,
644 &qtcb->header.fsf_status_qual.link_down_info);
649 static struct zfcp_fsf_req *zfcp_fsf_alloc(mempool_t *pool)
651 struct zfcp_fsf_req *req;
654 req = mempool_alloc(pool, GFP_ATOMIC);
656 req = kmalloc(sizeof(*req), GFP_ATOMIC);
661 memset(req, 0, sizeof(*req));
666 static struct fsf_qtcb *zfcp_qtcb_alloc(mempool_t *pool)
668 struct fsf_qtcb *qtcb;
671 qtcb = mempool_alloc(pool, GFP_ATOMIC);
673 qtcb = kmem_cache_alloc(zfcp_fsf_qtcb_cache, GFP_ATOMIC);
678 memset(qtcb, 0, sizeof(*qtcb));
682 static struct zfcp_fsf_req *zfcp_fsf_req_create(struct zfcp_qdio *qdio,
683 u32 fsf_cmd, u8 sbtype,
686 struct zfcp_adapter *adapter = qdio->adapter;
687 struct zfcp_fsf_req *req = zfcp_fsf_alloc(pool);
690 return ERR_PTR(-ENOMEM);
692 if (adapter->req_no == 0)
695 INIT_LIST_HEAD(&req->list);
696 init_timer(&req->timer);
697 init_completion(&req->completion);
699 req->adapter = adapter;
700 req->fsf_command = fsf_cmd;
701 req->req_id = adapter->req_no;
703 if (likely(fsf_cmd != FSF_QTCB_UNSOLICITED_STATUS)) {
705 req->qtcb = zfcp_qtcb_alloc(adapter->pool.qtcb_pool);
707 req->qtcb = zfcp_qtcb_alloc(NULL);
709 if (unlikely(!req->qtcb)) {
710 zfcp_fsf_req_free(req);
711 return ERR_PTR(-ENOMEM);
714 req->seq_no = adapter->fsf_req_seq_no;
715 req->qtcb->prefix.req_seq_no = adapter->fsf_req_seq_no;
716 req->qtcb->prefix.req_id = req->req_id;
717 req->qtcb->prefix.ulp_info = 26;
718 req->qtcb->prefix.qtcb_type = fsf_qtcb_type[req->fsf_command];
719 req->qtcb->prefix.qtcb_version = FSF_QTCB_CURRENT_VERSION;
720 req->qtcb->header.req_handle = req->req_id;
721 req->qtcb->header.fsf_command = req->fsf_command;
724 zfcp_qdio_req_init(adapter->qdio, &req->qdio_req, req->req_id, sbtype,
725 req->qtcb, sizeof(struct fsf_qtcb));
730 static int zfcp_fsf_req_send(struct zfcp_fsf_req *req)
732 struct zfcp_adapter *adapter = req->adapter;
733 struct zfcp_qdio *qdio = adapter->qdio;
734 int with_qtcb = (req->qtcb != NULL);
735 int req_id = req->req_id;
737 zfcp_reqlist_add(adapter->req_list, req);
739 req->qdio_req.qdio_outb_usage = atomic_read(&qdio->req_q_free);
740 req->issued = get_tod_clock();
741 if (zfcp_qdio_send(qdio, &req->qdio_req)) {
742 del_timer(&req->timer);
743 /* lookup request again, list might have changed */
744 zfcp_reqlist_find_rm(adapter->req_list, req_id);
745 zfcp_erp_adapter_reopen(adapter, 0, "fsrs__1");
749 /* Don't increase for unsolicited status */
751 adapter->fsf_req_seq_no++;
758 * zfcp_fsf_status_read - send status read request
759 * @adapter: pointer to struct zfcp_adapter
760 * @req_flags: request flags
761 * Returns: 0 on success, ERROR otherwise
763 int zfcp_fsf_status_read(struct zfcp_qdio *qdio)
765 struct zfcp_adapter *adapter = qdio->adapter;
766 struct zfcp_fsf_req *req;
767 struct fsf_status_read_buffer *sr_buf;
771 spin_lock_irq(&qdio->req_q_lock);
772 if (zfcp_qdio_sbal_get(qdio))
775 req = zfcp_fsf_req_create(qdio, FSF_QTCB_UNSOLICITED_STATUS,
776 SBAL_SFLAGS0_TYPE_STATUS,
777 adapter->pool.status_read_req);
779 retval = PTR_ERR(req);
783 page = mempool_alloc(adapter->pool.sr_data, GFP_ATOMIC);
788 sr_buf = page_address(page);
789 memset(sr_buf, 0, sizeof(*sr_buf));
792 zfcp_qdio_fill_next(qdio, &req->qdio_req, sr_buf, sizeof(*sr_buf));
793 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
795 retval = zfcp_fsf_req_send(req);
797 goto failed_req_send;
803 mempool_free(virt_to_page(sr_buf), adapter->pool.sr_data);
805 zfcp_dbf_hba_fsf_uss("fssr__1", req);
806 zfcp_fsf_req_free(req);
808 spin_unlock_irq(&qdio->req_q_lock);
812 static void zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req *req)
814 struct scsi_device *sdev = req->data;
815 struct zfcp_scsi_dev *zfcp_sdev;
816 union fsf_status_qual *fsq = &req->qtcb->header.fsf_status_qual;
818 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
821 zfcp_sdev = sdev_to_zfcp(sdev);
823 switch (req->qtcb->header.fsf_status) {
824 case FSF_PORT_HANDLE_NOT_VALID:
825 if (fsq->word[0] == fsq->word[1]) {
826 zfcp_erp_adapter_reopen(zfcp_sdev->port->adapter, 0,
828 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
831 case FSF_LUN_HANDLE_NOT_VALID:
832 if (fsq->word[0] == fsq->word[1]) {
833 zfcp_erp_port_reopen(zfcp_sdev->port, 0, "fsafch2");
834 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
837 case FSF_FCP_COMMAND_DOES_NOT_EXIST:
838 req->status |= ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED;
841 zfcp_erp_set_port_status(zfcp_sdev->port,
842 ZFCP_STATUS_COMMON_ACCESS_BOXED);
843 zfcp_erp_port_reopen(zfcp_sdev->port,
844 ZFCP_STATUS_COMMON_ERP_FAILED, "fsafch3");
845 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
848 zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_ACCESS_BOXED);
849 zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED,
851 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
853 case FSF_ADAPTER_STATUS_AVAILABLE:
854 switch (fsq->word[0]) {
855 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
856 zfcp_fc_test_link(zfcp_sdev->port);
858 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
859 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
864 req->status |= ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED;
870 * zfcp_fsf_abort_fcp_cmnd - abort running SCSI command
871 * @scmnd: The SCSI command to abort
872 * Returns: pointer to struct zfcp_fsf_req
875 struct zfcp_fsf_req *zfcp_fsf_abort_fcp_cmnd(struct scsi_cmnd *scmnd)
877 struct zfcp_fsf_req *req = NULL;
878 struct scsi_device *sdev = scmnd->device;
879 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
880 struct zfcp_qdio *qdio = zfcp_sdev->port->adapter->qdio;
881 unsigned long old_req_id = (unsigned long) scmnd->host_scribble;
883 spin_lock_irq(&qdio->req_q_lock);
884 if (zfcp_qdio_sbal_get(qdio))
886 req = zfcp_fsf_req_create(qdio, FSF_QTCB_ABORT_FCP_CMND,
887 SBAL_SFLAGS0_TYPE_READ,
888 qdio->adapter->pool.scsi_abort);
894 if (unlikely(!(atomic_read(&zfcp_sdev->status) &
895 ZFCP_STATUS_COMMON_UNBLOCKED)))
898 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
901 req->handler = zfcp_fsf_abort_fcp_command_handler;
902 req->qtcb->header.lun_handle = zfcp_sdev->lun_handle;
903 req->qtcb->header.port_handle = zfcp_sdev->port->handle;
904 req->qtcb->bottom.support.req_handle = (u64) old_req_id;
906 zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT);
907 if (!zfcp_fsf_req_send(req))
911 zfcp_fsf_req_free(req);
914 spin_unlock_irq(&qdio->req_q_lock);
918 static void zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *req)
920 struct zfcp_adapter *adapter = req->adapter;
921 struct zfcp_fsf_ct_els *ct = req->data;
922 struct fsf_qtcb_header *header = &req->qtcb->header;
924 ct->status = -EINVAL;
926 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
929 switch (header->fsf_status) {
931 zfcp_dbf_san_res("fsscth2", req);
934 case FSF_SERVICE_CLASS_NOT_SUPPORTED:
935 zfcp_fsf_class_not_supp(req);
937 case FSF_ADAPTER_STATUS_AVAILABLE:
938 switch (header->fsf_status_qual.word[0]){
939 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
940 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
941 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
946 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
948 case FSF_PORT_HANDLE_NOT_VALID:
949 zfcp_erp_adapter_reopen(adapter, 0, "fsscth1");
951 case FSF_GENERIC_COMMAND_REJECTED:
952 case FSF_PAYLOAD_SIZE_MISMATCH:
953 case FSF_REQUEST_SIZE_TOO_LARGE:
954 case FSF_RESPONSE_SIZE_TOO_LARGE:
955 case FSF_SBAL_MISMATCH:
956 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
962 ct->handler(ct->handler_data);
965 static void zfcp_fsf_setup_ct_els_unchained(struct zfcp_qdio *qdio,
966 struct zfcp_qdio_req *q_req,
967 struct scatterlist *sg_req,
968 struct scatterlist *sg_resp)
970 zfcp_qdio_fill_next(qdio, q_req, sg_virt(sg_req), sg_req->length);
971 zfcp_qdio_fill_next(qdio, q_req, sg_virt(sg_resp), sg_resp->length);
972 zfcp_qdio_set_sbale_last(qdio, q_req);
975 static int zfcp_fsf_setup_ct_els_sbals(struct zfcp_fsf_req *req,
976 struct scatterlist *sg_req,
977 struct scatterlist *sg_resp)
979 struct zfcp_adapter *adapter = req->adapter;
980 struct zfcp_qdio *qdio = adapter->qdio;
981 struct fsf_qtcb *qtcb = req->qtcb;
982 u32 feat = adapter->adapter_features;
984 if (zfcp_adapter_multi_buffer_active(adapter)) {
985 if (zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, sg_req))
987 qtcb->bottom.support.req_buf_length =
988 zfcp_qdio_real_bytes(sg_req);
989 if (zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, sg_resp))
991 qtcb->bottom.support.resp_buf_length =
992 zfcp_qdio_real_bytes(sg_resp);
994 zfcp_qdio_set_data_div(qdio, &req->qdio_req,
995 zfcp_qdio_sbale_count(sg_req));
996 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
997 zfcp_qdio_set_scount(qdio, &req->qdio_req);
1001 /* use single, unchained SBAL if it can hold the request */
1002 if (zfcp_qdio_sg_one_sbale(sg_req) && zfcp_qdio_sg_one_sbale(sg_resp)) {
1003 zfcp_fsf_setup_ct_els_unchained(qdio, &req->qdio_req,
1008 if (!(feat & FSF_FEATURE_ELS_CT_CHAINED_SBALS))
1011 if (zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, sg_req))
1014 qtcb->bottom.support.req_buf_length = zfcp_qdio_real_bytes(sg_req);
1016 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1017 zfcp_qdio_skip_to_last_sbale(qdio, &req->qdio_req);
1019 if (zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, sg_resp))
1022 qtcb->bottom.support.resp_buf_length = zfcp_qdio_real_bytes(sg_resp);
1024 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1029 static int zfcp_fsf_setup_ct_els(struct zfcp_fsf_req *req,
1030 struct scatterlist *sg_req,
1031 struct scatterlist *sg_resp,
1032 unsigned int timeout)
1036 ret = zfcp_fsf_setup_ct_els_sbals(req, sg_req, sg_resp);
1040 /* common settings for ct/gs and els requests */
1042 timeout = 255; /* max value accepted by hardware */
1043 req->qtcb->bottom.support.service_class = FSF_CLASS_3;
1044 req->qtcb->bottom.support.timeout = timeout;
1045 zfcp_fsf_start_timer(req, (timeout + 10) * HZ);
1051 * zfcp_fsf_send_ct - initiate a Generic Service request (FC-GS)
1052 * @ct: pointer to struct zfcp_send_ct with data for request
1053 * @pool: if non-null this mempool is used to allocate struct zfcp_fsf_req
1055 int zfcp_fsf_send_ct(struct zfcp_fc_wka_port *wka_port,
1056 struct zfcp_fsf_ct_els *ct, mempool_t *pool,
1057 unsigned int timeout)
1059 struct zfcp_qdio *qdio = wka_port->adapter->qdio;
1060 struct zfcp_fsf_req *req;
1063 spin_lock_irq(&qdio->req_q_lock);
1064 if (zfcp_qdio_sbal_get(qdio))
1067 req = zfcp_fsf_req_create(qdio, FSF_QTCB_SEND_GENERIC,
1068 SBAL_SFLAGS0_TYPE_WRITE_READ, pool);
1075 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1076 ret = zfcp_fsf_setup_ct_els(req, ct->req, ct->resp, timeout);
1080 req->handler = zfcp_fsf_send_ct_handler;
1081 req->qtcb->header.port_handle = wka_port->handle;
1084 zfcp_dbf_san_req("fssct_1", req, wka_port->d_id);
1086 ret = zfcp_fsf_req_send(req);
1093 zfcp_fsf_req_free(req);
1095 spin_unlock_irq(&qdio->req_q_lock);
1099 static void zfcp_fsf_send_els_handler(struct zfcp_fsf_req *req)
1101 struct zfcp_fsf_ct_els *send_els = req->data;
1102 struct fsf_qtcb_header *header = &req->qtcb->header;
1104 send_els->status = -EINVAL;
1106 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1107 goto skip_fsfstatus;
1109 switch (header->fsf_status) {
1111 zfcp_dbf_san_res("fsselh1", req);
1112 send_els->status = 0;
1114 case FSF_SERVICE_CLASS_NOT_SUPPORTED:
1115 zfcp_fsf_class_not_supp(req);
1117 case FSF_ADAPTER_STATUS_AVAILABLE:
1118 switch (header->fsf_status_qual.word[0]){
1119 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1120 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1121 case FSF_SQ_RETRY_IF_POSSIBLE:
1122 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1126 case FSF_ELS_COMMAND_REJECTED:
1127 case FSF_PAYLOAD_SIZE_MISMATCH:
1128 case FSF_REQUEST_SIZE_TOO_LARGE:
1129 case FSF_RESPONSE_SIZE_TOO_LARGE:
1131 case FSF_SBAL_MISMATCH:
1132 /* should never occur, avoided in zfcp_fsf_send_els */
1135 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1139 if (send_els->handler)
1140 send_els->handler(send_els->handler_data);
1144 * zfcp_fsf_send_els - initiate an ELS command (FC-FS)
1145 * @els: pointer to struct zfcp_send_els with data for the command
1147 int zfcp_fsf_send_els(struct zfcp_adapter *adapter, u32 d_id,
1148 struct zfcp_fsf_ct_els *els, unsigned int timeout)
1150 struct zfcp_fsf_req *req;
1151 struct zfcp_qdio *qdio = adapter->qdio;
1154 spin_lock_irq(&qdio->req_q_lock);
1155 if (zfcp_qdio_sbal_get(qdio))
1158 req = zfcp_fsf_req_create(qdio, FSF_QTCB_SEND_ELS,
1159 SBAL_SFLAGS0_TYPE_WRITE_READ, NULL);
1166 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1168 if (!zfcp_adapter_multi_buffer_active(adapter))
1169 zfcp_qdio_sbal_limit(qdio, &req->qdio_req, 2);
1171 ret = zfcp_fsf_setup_ct_els(req, els->req, els->resp, timeout);
1176 hton24(req->qtcb->bottom.support.d_id, d_id);
1177 req->handler = zfcp_fsf_send_els_handler;
1180 zfcp_dbf_san_req("fssels1", req, d_id);
1182 ret = zfcp_fsf_req_send(req);
1189 zfcp_fsf_req_free(req);
1191 spin_unlock_irq(&qdio->req_q_lock);
1195 int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action)
1197 struct zfcp_fsf_req *req;
1198 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1201 spin_lock_irq(&qdio->req_q_lock);
1202 if (zfcp_qdio_sbal_get(qdio))
1205 req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_CONFIG_DATA,
1206 SBAL_SFLAGS0_TYPE_READ,
1207 qdio->adapter->pool.erp_req);
1210 retval = PTR_ERR(req);
1214 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1215 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1217 req->qtcb->bottom.config.feature_selection =
1218 FSF_FEATURE_NOTIFICATION_LOST |
1219 FSF_FEATURE_UPDATE_ALERT;
1220 req->erp_action = erp_action;
1221 req->handler = zfcp_fsf_exchange_config_data_handler;
1222 erp_action->fsf_req_id = req->req_id;
1224 zfcp_fsf_start_erp_timer(req);
1225 retval = zfcp_fsf_req_send(req);
1227 zfcp_fsf_req_free(req);
1228 erp_action->fsf_req_id = 0;
1231 spin_unlock_irq(&qdio->req_q_lock);
1235 int zfcp_fsf_exchange_config_data_sync(struct zfcp_qdio *qdio,
1236 struct fsf_qtcb_bottom_config *data)
1238 struct zfcp_fsf_req *req = NULL;
1241 spin_lock_irq(&qdio->req_q_lock);
1242 if (zfcp_qdio_sbal_get(qdio))
1245 req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_CONFIG_DATA,
1246 SBAL_SFLAGS0_TYPE_READ, NULL);
1249 retval = PTR_ERR(req);
1253 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1254 req->handler = zfcp_fsf_exchange_config_data_handler;
1256 req->qtcb->bottom.config.feature_selection =
1257 FSF_FEATURE_NOTIFICATION_LOST |
1258 FSF_FEATURE_UPDATE_ALERT;
1263 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1264 retval = zfcp_fsf_req_send(req);
1265 spin_unlock_irq(&qdio->req_q_lock);
1267 wait_for_completion(&req->completion);
1269 zfcp_fsf_req_free(req);
1273 spin_unlock_irq(&qdio->req_q_lock);
1278 * zfcp_fsf_exchange_port_data - request information about local port
1279 * @erp_action: ERP action for the adapter for which port data is requested
1280 * Returns: 0 on success, error otherwise
1282 int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action)
1284 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1285 struct zfcp_fsf_req *req;
1288 if (!(qdio->adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT))
1291 spin_lock_irq(&qdio->req_q_lock);
1292 if (zfcp_qdio_sbal_get(qdio))
1295 req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_PORT_DATA,
1296 SBAL_SFLAGS0_TYPE_READ,
1297 qdio->adapter->pool.erp_req);
1300 retval = PTR_ERR(req);
1304 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1305 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1307 req->handler = zfcp_fsf_exchange_port_data_handler;
1308 req->erp_action = erp_action;
1309 erp_action->fsf_req_id = req->req_id;
1311 zfcp_fsf_start_erp_timer(req);
1312 retval = zfcp_fsf_req_send(req);
1314 zfcp_fsf_req_free(req);
1315 erp_action->fsf_req_id = 0;
1318 spin_unlock_irq(&qdio->req_q_lock);
1323 * zfcp_fsf_exchange_port_data_sync - request information about local port
1324 * @qdio: pointer to struct zfcp_qdio
1325 * @data: pointer to struct fsf_qtcb_bottom_port
1326 * Returns: 0 on success, error otherwise
1328 int zfcp_fsf_exchange_port_data_sync(struct zfcp_qdio *qdio,
1329 struct fsf_qtcb_bottom_port *data)
1331 struct zfcp_fsf_req *req = NULL;
1334 if (!(qdio->adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT))
1337 spin_lock_irq(&qdio->req_q_lock);
1338 if (zfcp_qdio_sbal_get(qdio))
1341 req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_PORT_DATA,
1342 SBAL_SFLAGS0_TYPE_READ, NULL);
1345 retval = PTR_ERR(req);
1352 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1354 req->handler = zfcp_fsf_exchange_port_data_handler;
1355 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1356 retval = zfcp_fsf_req_send(req);
1357 spin_unlock_irq(&qdio->req_q_lock);
1360 wait_for_completion(&req->completion);
1362 zfcp_fsf_req_free(req);
1367 spin_unlock_irq(&qdio->req_q_lock);
1371 static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req *req)
1373 struct zfcp_port *port = req->data;
1374 struct fsf_qtcb_header *header = &req->qtcb->header;
1375 struct fc_els_flogi *plogi;
1377 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1380 switch (header->fsf_status) {
1381 case FSF_PORT_ALREADY_OPEN:
1383 case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED:
1384 dev_warn(&req->adapter->ccw_device->dev,
1385 "Not enough FCP adapter resources to open "
1386 "remote port 0x%016Lx\n",
1387 (unsigned long long)port->wwpn);
1388 zfcp_erp_set_port_status(port,
1389 ZFCP_STATUS_COMMON_ERP_FAILED);
1390 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1392 case FSF_ADAPTER_STATUS_AVAILABLE:
1393 switch (header->fsf_status_qual.word[0]) {
1394 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1395 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1396 case FSF_SQ_NO_RETRY_POSSIBLE:
1397 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1402 port->handle = header->port_handle;
1403 atomic_or(ZFCP_STATUS_COMMON_OPEN |
1404 ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
1405 atomic_andnot(ZFCP_STATUS_COMMON_ACCESS_BOXED,
1407 /* check whether D_ID has changed during open */
1409 * FIXME: This check is not airtight, as the FCP channel does
1410 * not monitor closures of target port connections caused on
1411 * the remote side. Thus, they might miss out on invalidating
1412 * locally cached WWPNs (and other N_Port parameters) of gone
1413 * target ports. So, our heroic attempt to make things safe
1414 * could be undermined by 'open port' response data tagged with
1415 * obsolete WWPNs. Another reason to monitor potential
1416 * connection closures ourself at least (by interpreting
1417 * incoming ELS' and unsolicited status). It just crosses my
1418 * mind that one should be able to cross-check by means of
1419 * another GID_PN straight after a port has been opened.
1420 * Alternately, an ADISC/PDISC ELS should suffice, as well.
1422 plogi = (struct fc_els_flogi *) req->qtcb->bottom.support.els;
1423 if (req->qtcb->bottom.support.els1_length >=
1425 zfcp_fc_plogi_evaluate(port, plogi);
1427 case FSF_UNKNOWN_OP_SUBTYPE:
1428 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1433 put_device(&port->dev);
1437 * zfcp_fsf_open_port - create and send open port request
1438 * @erp_action: pointer to struct zfcp_erp_action
1439 * Returns: 0 on success, error otherwise
1441 int zfcp_fsf_open_port(struct zfcp_erp_action *erp_action)
1443 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1444 struct zfcp_port *port = erp_action->port;
1445 struct zfcp_fsf_req *req;
1448 spin_lock_irq(&qdio->req_q_lock);
1449 if (zfcp_qdio_sbal_get(qdio))
1452 req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_PORT_WITH_DID,
1453 SBAL_SFLAGS0_TYPE_READ,
1454 qdio->adapter->pool.erp_req);
1457 retval = PTR_ERR(req);
1461 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1462 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1464 req->handler = zfcp_fsf_open_port_handler;
1465 hton24(req->qtcb->bottom.support.d_id, port->d_id);
1467 req->erp_action = erp_action;
1468 erp_action->fsf_req_id = req->req_id;
1469 get_device(&port->dev);
1471 zfcp_fsf_start_erp_timer(req);
1472 retval = zfcp_fsf_req_send(req);
1474 zfcp_fsf_req_free(req);
1475 erp_action->fsf_req_id = 0;
1476 put_device(&port->dev);
1479 spin_unlock_irq(&qdio->req_q_lock);
1483 static void zfcp_fsf_close_port_handler(struct zfcp_fsf_req *req)
1485 struct zfcp_port *port = req->data;
1487 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1490 switch (req->qtcb->header.fsf_status) {
1491 case FSF_PORT_HANDLE_NOT_VALID:
1492 zfcp_erp_adapter_reopen(port->adapter, 0, "fscph_1");
1493 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1495 case FSF_ADAPTER_STATUS_AVAILABLE:
1498 zfcp_erp_clear_port_status(port, ZFCP_STATUS_COMMON_OPEN);
1504 * zfcp_fsf_close_port - create and send close port request
1505 * @erp_action: pointer to struct zfcp_erp_action
1506 * Returns: 0 on success, error otherwise
1508 int zfcp_fsf_close_port(struct zfcp_erp_action *erp_action)
1510 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1511 struct zfcp_fsf_req *req;
1514 spin_lock_irq(&qdio->req_q_lock);
1515 if (zfcp_qdio_sbal_get(qdio))
1518 req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PORT,
1519 SBAL_SFLAGS0_TYPE_READ,
1520 qdio->adapter->pool.erp_req);
1523 retval = PTR_ERR(req);
1527 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1528 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1530 req->handler = zfcp_fsf_close_port_handler;
1531 req->data = erp_action->port;
1532 req->erp_action = erp_action;
1533 req->qtcb->header.port_handle = erp_action->port->handle;
1534 erp_action->fsf_req_id = req->req_id;
1536 zfcp_fsf_start_erp_timer(req);
1537 retval = zfcp_fsf_req_send(req);
1539 zfcp_fsf_req_free(req);
1540 erp_action->fsf_req_id = 0;
1543 spin_unlock_irq(&qdio->req_q_lock);
1547 static void zfcp_fsf_open_wka_port_handler(struct zfcp_fsf_req *req)
1549 struct zfcp_fc_wka_port *wka_port = req->data;
1550 struct fsf_qtcb_header *header = &req->qtcb->header;
1552 if (req->status & ZFCP_STATUS_FSFREQ_ERROR) {
1553 wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE;
1557 switch (header->fsf_status) {
1558 case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED:
1559 dev_warn(&req->adapter->ccw_device->dev,
1560 "Opening WKA port 0x%x failed\n", wka_port->d_id);
1562 case FSF_ADAPTER_STATUS_AVAILABLE:
1563 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1564 wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE;
1567 wka_port->handle = header->port_handle;
1569 case FSF_PORT_ALREADY_OPEN:
1570 wka_port->status = ZFCP_FC_WKA_PORT_ONLINE;
1573 wake_up(&wka_port->completion_wq);
1577 * zfcp_fsf_open_wka_port - create and send open wka-port request
1578 * @wka_port: pointer to struct zfcp_fc_wka_port
1579 * Returns: 0 on success, error otherwise
1581 int zfcp_fsf_open_wka_port(struct zfcp_fc_wka_port *wka_port)
1583 struct zfcp_qdio *qdio = wka_port->adapter->qdio;
1584 struct zfcp_fsf_req *req = NULL;
1587 spin_lock_irq(&qdio->req_q_lock);
1588 if (zfcp_qdio_sbal_get(qdio))
1591 req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_PORT_WITH_DID,
1592 SBAL_SFLAGS0_TYPE_READ,
1593 qdio->adapter->pool.erp_req);
1596 retval = PTR_ERR(req);
1600 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1601 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1603 req->handler = zfcp_fsf_open_wka_port_handler;
1604 hton24(req->qtcb->bottom.support.d_id, wka_port->d_id);
1605 req->data = wka_port;
1607 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1608 retval = zfcp_fsf_req_send(req);
1610 zfcp_fsf_req_free(req);
1612 spin_unlock_irq(&qdio->req_q_lock);
1613 if (req && !IS_ERR(req))
1614 zfcp_dbf_rec_run_wka("fsowp_1", wka_port, req->req_id);
1618 static void zfcp_fsf_close_wka_port_handler(struct zfcp_fsf_req *req)
1620 struct zfcp_fc_wka_port *wka_port = req->data;
1622 if (req->qtcb->header.fsf_status == FSF_PORT_HANDLE_NOT_VALID) {
1623 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1624 zfcp_erp_adapter_reopen(wka_port->adapter, 0, "fscwph1");
1627 wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE;
1628 wake_up(&wka_port->completion_wq);
1632 * zfcp_fsf_close_wka_port - create and send close wka port request
1633 * @wka_port: WKA port to open
1634 * Returns: 0 on success, error otherwise
1636 int zfcp_fsf_close_wka_port(struct zfcp_fc_wka_port *wka_port)
1638 struct zfcp_qdio *qdio = wka_port->adapter->qdio;
1639 struct zfcp_fsf_req *req = NULL;
1642 spin_lock_irq(&qdio->req_q_lock);
1643 if (zfcp_qdio_sbal_get(qdio))
1646 req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PORT,
1647 SBAL_SFLAGS0_TYPE_READ,
1648 qdio->adapter->pool.erp_req);
1651 retval = PTR_ERR(req);
1655 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1656 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1658 req->handler = zfcp_fsf_close_wka_port_handler;
1659 req->data = wka_port;
1660 req->qtcb->header.port_handle = wka_port->handle;
1662 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1663 retval = zfcp_fsf_req_send(req);
1665 zfcp_fsf_req_free(req);
1667 spin_unlock_irq(&qdio->req_q_lock);
1668 if (req && !IS_ERR(req))
1669 zfcp_dbf_rec_run_wka("fscwp_1", wka_port, req->req_id);
1673 static void zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *req)
1675 struct zfcp_port *port = req->data;
1676 struct fsf_qtcb_header *header = &req->qtcb->header;
1677 struct scsi_device *sdev;
1679 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1682 switch (header->fsf_status) {
1683 case FSF_PORT_HANDLE_NOT_VALID:
1684 zfcp_erp_adapter_reopen(port->adapter, 0, "fscpph1");
1685 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1687 case FSF_PORT_BOXED:
1688 /* can't use generic zfcp_erp_modify_port_status because
1689 * ZFCP_STATUS_COMMON_OPEN must not be reset for the port */
1690 atomic_andnot(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
1691 shost_for_each_device(sdev, port->adapter->scsi_host)
1692 if (sdev_to_zfcp(sdev)->port == port)
1693 atomic_andnot(ZFCP_STATUS_COMMON_OPEN,
1694 &sdev_to_zfcp(sdev)->status);
1695 zfcp_erp_set_port_status(port, ZFCP_STATUS_COMMON_ACCESS_BOXED);
1696 zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED,
1698 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1700 case FSF_ADAPTER_STATUS_AVAILABLE:
1701 switch (header->fsf_status_qual.word[0]) {
1702 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1704 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1705 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1710 /* can't use generic zfcp_erp_modify_port_status because
1711 * ZFCP_STATUS_COMMON_OPEN must not be reset for the port
1713 atomic_andnot(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
1714 shost_for_each_device(sdev, port->adapter->scsi_host)
1715 if (sdev_to_zfcp(sdev)->port == port)
1716 atomic_andnot(ZFCP_STATUS_COMMON_OPEN,
1717 &sdev_to_zfcp(sdev)->status);
1723 * zfcp_fsf_close_physical_port - close physical port
1724 * @erp_action: pointer to struct zfcp_erp_action
1725 * Returns: 0 on success
1727 int zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action)
1729 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1730 struct zfcp_fsf_req *req;
1733 spin_lock_irq(&qdio->req_q_lock);
1734 if (zfcp_qdio_sbal_get(qdio))
1737 req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PHYSICAL_PORT,
1738 SBAL_SFLAGS0_TYPE_READ,
1739 qdio->adapter->pool.erp_req);
1742 retval = PTR_ERR(req);
1746 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1747 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1749 req->data = erp_action->port;
1750 req->qtcb->header.port_handle = erp_action->port->handle;
1751 req->erp_action = erp_action;
1752 req->handler = zfcp_fsf_close_physical_port_handler;
1753 erp_action->fsf_req_id = req->req_id;
1755 zfcp_fsf_start_erp_timer(req);
1756 retval = zfcp_fsf_req_send(req);
1758 zfcp_fsf_req_free(req);
1759 erp_action->fsf_req_id = 0;
1762 spin_unlock_irq(&qdio->req_q_lock);
1766 static void zfcp_fsf_open_lun_handler(struct zfcp_fsf_req *req)
1768 struct zfcp_adapter *adapter = req->adapter;
1769 struct scsi_device *sdev = req->data;
1770 struct zfcp_scsi_dev *zfcp_sdev;
1771 struct fsf_qtcb_header *header = &req->qtcb->header;
1772 union fsf_status_qual *qual = &header->fsf_status_qual;
1774 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1777 zfcp_sdev = sdev_to_zfcp(sdev);
1779 atomic_andnot(ZFCP_STATUS_COMMON_ACCESS_DENIED |
1780 ZFCP_STATUS_COMMON_ACCESS_BOXED,
1781 &zfcp_sdev->status);
1783 switch (header->fsf_status) {
1785 case FSF_PORT_HANDLE_NOT_VALID:
1786 zfcp_erp_adapter_reopen(adapter, 0, "fsouh_1");
1788 case FSF_LUN_ALREADY_OPEN:
1790 case FSF_PORT_BOXED:
1791 zfcp_erp_set_port_status(zfcp_sdev->port,
1792 ZFCP_STATUS_COMMON_ACCESS_BOXED);
1793 zfcp_erp_port_reopen(zfcp_sdev->port,
1794 ZFCP_STATUS_COMMON_ERP_FAILED, "fsouh_2");
1795 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1797 case FSF_LUN_SHARING_VIOLATION:
1799 dev_warn(&zfcp_sdev->port->adapter->ccw_device->dev,
1800 "LUN 0x%Lx on port 0x%Lx is already in "
1801 "use by CSS%d, MIF Image ID %x\n",
1802 zfcp_scsi_dev_lun(sdev),
1803 (unsigned long long)zfcp_sdev->port->wwpn,
1804 qual->fsf_queue_designator.cssid,
1805 qual->fsf_queue_designator.hla);
1806 zfcp_erp_set_lun_status(sdev,
1807 ZFCP_STATUS_COMMON_ERP_FAILED |
1808 ZFCP_STATUS_COMMON_ACCESS_DENIED);
1809 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1811 case FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED:
1812 dev_warn(&adapter->ccw_device->dev,
1813 "No handle is available for LUN "
1814 "0x%016Lx on port 0x%016Lx\n",
1815 (unsigned long long)zfcp_scsi_dev_lun(sdev),
1816 (unsigned long long)zfcp_sdev->port->wwpn);
1817 zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_ERP_FAILED);
1819 case FSF_INVALID_COMMAND_OPTION:
1820 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1822 case FSF_ADAPTER_STATUS_AVAILABLE:
1823 switch (header->fsf_status_qual.word[0]) {
1824 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1825 zfcp_fc_test_link(zfcp_sdev->port);
1827 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1828 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1834 zfcp_sdev->lun_handle = header->lun_handle;
1835 atomic_or(ZFCP_STATUS_COMMON_OPEN, &zfcp_sdev->status);
1841 * zfcp_fsf_open_lun - open LUN
1842 * @erp_action: pointer to struct zfcp_erp_action
1843 * Returns: 0 on success, error otherwise
1845 int zfcp_fsf_open_lun(struct zfcp_erp_action *erp_action)
1847 struct zfcp_adapter *adapter = erp_action->adapter;
1848 struct zfcp_qdio *qdio = adapter->qdio;
1849 struct zfcp_fsf_req *req;
1852 spin_lock_irq(&qdio->req_q_lock);
1853 if (zfcp_qdio_sbal_get(qdio))
1856 req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_LUN,
1857 SBAL_SFLAGS0_TYPE_READ,
1858 adapter->pool.erp_req);
1861 retval = PTR_ERR(req);
1865 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1866 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1868 req->qtcb->header.port_handle = erp_action->port->handle;
1869 req->qtcb->bottom.support.fcp_lun = zfcp_scsi_dev_lun(erp_action->sdev);
1870 req->handler = zfcp_fsf_open_lun_handler;
1871 req->data = erp_action->sdev;
1872 req->erp_action = erp_action;
1873 erp_action->fsf_req_id = req->req_id;
1875 if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE))
1876 req->qtcb->bottom.support.option = FSF_OPEN_LUN_SUPPRESS_BOXING;
1878 zfcp_fsf_start_erp_timer(req);
1879 retval = zfcp_fsf_req_send(req);
1881 zfcp_fsf_req_free(req);
1882 erp_action->fsf_req_id = 0;
1885 spin_unlock_irq(&qdio->req_q_lock);
1889 static void zfcp_fsf_close_lun_handler(struct zfcp_fsf_req *req)
1891 struct scsi_device *sdev = req->data;
1892 struct zfcp_scsi_dev *zfcp_sdev;
1894 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1897 zfcp_sdev = sdev_to_zfcp(sdev);
1899 switch (req->qtcb->header.fsf_status) {
1900 case FSF_PORT_HANDLE_NOT_VALID:
1901 zfcp_erp_adapter_reopen(zfcp_sdev->port->adapter, 0, "fscuh_1");
1902 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1904 case FSF_LUN_HANDLE_NOT_VALID:
1905 zfcp_erp_port_reopen(zfcp_sdev->port, 0, "fscuh_2");
1906 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1908 case FSF_PORT_BOXED:
1909 zfcp_erp_set_port_status(zfcp_sdev->port,
1910 ZFCP_STATUS_COMMON_ACCESS_BOXED);
1911 zfcp_erp_port_reopen(zfcp_sdev->port,
1912 ZFCP_STATUS_COMMON_ERP_FAILED, "fscuh_3");
1913 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1915 case FSF_ADAPTER_STATUS_AVAILABLE:
1916 switch (req->qtcb->header.fsf_status_qual.word[0]) {
1917 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1918 zfcp_fc_test_link(zfcp_sdev->port);
1920 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1921 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1926 atomic_andnot(ZFCP_STATUS_COMMON_OPEN, &zfcp_sdev->status);
1932 * zfcp_fsf_close_LUN - close LUN
1933 * @erp_action: pointer to erp_action triggering the "close LUN"
1934 * Returns: 0 on success, error otherwise
1936 int zfcp_fsf_close_lun(struct zfcp_erp_action *erp_action)
1938 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1939 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(erp_action->sdev);
1940 struct zfcp_fsf_req *req;
1943 spin_lock_irq(&qdio->req_q_lock);
1944 if (zfcp_qdio_sbal_get(qdio))
1947 req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_LUN,
1948 SBAL_SFLAGS0_TYPE_READ,
1949 qdio->adapter->pool.erp_req);
1952 retval = PTR_ERR(req);
1956 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1957 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1959 req->qtcb->header.port_handle = erp_action->port->handle;
1960 req->qtcb->header.lun_handle = zfcp_sdev->lun_handle;
1961 req->handler = zfcp_fsf_close_lun_handler;
1962 req->data = erp_action->sdev;
1963 req->erp_action = erp_action;
1964 erp_action->fsf_req_id = req->req_id;
1966 zfcp_fsf_start_erp_timer(req);
1967 retval = zfcp_fsf_req_send(req);
1969 zfcp_fsf_req_free(req);
1970 erp_action->fsf_req_id = 0;
1973 spin_unlock_irq(&qdio->req_q_lock);
1977 static void zfcp_fsf_update_lat(struct fsf_latency_record *lat_rec, u32 lat)
1979 lat_rec->sum += lat;
1980 lat_rec->min = min(lat_rec->min, lat);
1981 lat_rec->max = max(lat_rec->max, lat);
1984 static void zfcp_fsf_req_trace(struct zfcp_fsf_req *req, struct scsi_cmnd *scsi)
1986 struct fsf_qual_latency_info *lat_in;
1987 struct latency_cont *lat = NULL;
1988 struct zfcp_scsi_dev *zfcp_sdev;
1989 struct zfcp_blk_drv_data blktrc;
1990 int ticks = req->adapter->timer_ticks;
1992 lat_in = &req->qtcb->prefix.prot_status_qual.latency_info;
1995 blktrc.magic = ZFCP_BLK_DRV_DATA_MAGIC;
1996 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1997 blktrc.flags |= ZFCP_BLK_REQ_ERROR;
1998 blktrc.inb_usage = 0;
1999 blktrc.outb_usage = req->qdio_req.qdio_outb_usage;
2001 if (req->adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA &&
2002 !(req->status & ZFCP_STATUS_FSFREQ_ERROR)) {
2003 zfcp_sdev = sdev_to_zfcp(scsi->device);
2004 blktrc.flags |= ZFCP_BLK_LAT_VALID;
2005 blktrc.channel_lat = lat_in->channel_lat * ticks;
2006 blktrc.fabric_lat = lat_in->fabric_lat * ticks;
2008 switch (req->qtcb->bottom.io.data_direction) {
2009 case FSF_DATADIR_DIF_READ_STRIP:
2010 case FSF_DATADIR_DIF_READ_CONVERT:
2011 case FSF_DATADIR_READ:
2012 lat = &zfcp_sdev->latencies.read;
2014 case FSF_DATADIR_DIF_WRITE_INSERT:
2015 case FSF_DATADIR_DIF_WRITE_CONVERT:
2016 case FSF_DATADIR_WRITE:
2017 lat = &zfcp_sdev->latencies.write;
2019 case FSF_DATADIR_CMND:
2020 lat = &zfcp_sdev->latencies.cmd;
2025 spin_lock(&zfcp_sdev->latencies.lock);
2026 zfcp_fsf_update_lat(&lat->channel, lat_in->channel_lat);
2027 zfcp_fsf_update_lat(&lat->fabric, lat_in->fabric_lat);
2029 spin_unlock(&zfcp_sdev->latencies.lock);
2033 blk_add_driver_data(scsi->request->q, scsi->request, &blktrc,
2037 static void zfcp_fsf_fcp_handler_common(struct zfcp_fsf_req *req)
2039 struct scsi_cmnd *scmnd = req->data;
2040 struct scsi_device *sdev = scmnd->device;
2041 struct zfcp_scsi_dev *zfcp_sdev;
2042 struct fsf_qtcb_header *header = &req->qtcb->header;
2044 if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR))
2047 zfcp_sdev = sdev_to_zfcp(sdev);
2049 switch (header->fsf_status) {
2050 case FSF_HANDLE_MISMATCH:
2051 case FSF_PORT_HANDLE_NOT_VALID:
2052 zfcp_erp_adapter_reopen(zfcp_sdev->port->adapter, 0, "fssfch1");
2053 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2055 case FSF_FCPLUN_NOT_VALID:
2056 case FSF_LUN_HANDLE_NOT_VALID:
2057 zfcp_erp_port_reopen(zfcp_sdev->port, 0, "fssfch2");
2058 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2060 case FSF_SERVICE_CLASS_NOT_SUPPORTED:
2061 zfcp_fsf_class_not_supp(req);
2063 case FSF_DIRECTION_INDICATOR_NOT_VALID:
2064 dev_err(&req->adapter->ccw_device->dev,
2065 "Incorrect direction %d, LUN 0x%016Lx on port "
2066 "0x%016Lx closed\n",
2067 req->qtcb->bottom.io.data_direction,
2068 (unsigned long long)zfcp_scsi_dev_lun(sdev),
2069 (unsigned long long)zfcp_sdev->port->wwpn);
2070 zfcp_erp_adapter_shutdown(zfcp_sdev->port->adapter, 0,
2072 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2074 case FSF_CMND_LENGTH_NOT_VALID:
2075 dev_err(&req->adapter->ccw_device->dev,
2076 "Incorrect CDB length %d, LUN 0x%016Lx on "
2077 "port 0x%016Lx closed\n",
2078 req->qtcb->bottom.io.fcp_cmnd_length,
2079 (unsigned long long)zfcp_scsi_dev_lun(sdev),
2080 (unsigned long long)zfcp_sdev->port->wwpn);
2081 zfcp_erp_adapter_shutdown(zfcp_sdev->port->adapter, 0,
2083 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2085 case FSF_PORT_BOXED:
2086 zfcp_erp_set_port_status(zfcp_sdev->port,
2087 ZFCP_STATUS_COMMON_ACCESS_BOXED);
2088 zfcp_erp_port_reopen(zfcp_sdev->port,
2089 ZFCP_STATUS_COMMON_ERP_FAILED, "fssfch5");
2090 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2093 zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_ACCESS_BOXED);
2094 zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED,
2096 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2098 case FSF_ADAPTER_STATUS_AVAILABLE:
2099 if (header->fsf_status_qual.word[0] ==
2100 FSF_SQ_INVOKE_LINK_TEST_PROCEDURE)
2101 zfcp_fc_test_link(zfcp_sdev->port);
2102 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2107 static void zfcp_fsf_fcp_cmnd_handler(struct zfcp_fsf_req *req)
2109 struct scsi_cmnd *scpnt;
2110 struct fcp_resp_with_ext *fcp_rsp;
2111 unsigned long flags;
2113 read_lock_irqsave(&req->adapter->abort_lock, flags);
2116 if (unlikely(!scpnt)) {
2117 read_unlock_irqrestore(&req->adapter->abort_lock, flags);
2121 zfcp_fsf_fcp_handler_common(req);
2123 if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) {
2124 set_host_byte(scpnt, DID_TRANSPORT_DISRUPTED);
2125 goto skip_fsfstatus;
2128 switch (req->qtcb->header.fsf_status) {
2129 case FSF_INCONSISTENT_PROT_DATA:
2130 case FSF_INVALID_PROT_PARM:
2131 set_host_byte(scpnt, DID_ERROR);
2132 goto skip_fsfstatus;
2133 case FSF_BLOCK_GUARD_CHECK_FAILURE:
2134 zfcp_scsi_dif_sense_error(scpnt, 0x1);
2135 goto skip_fsfstatus;
2136 case FSF_APP_TAG_CHECK_FAILURE:
2137 zfcp_scsi_dif_sense_error(scpnt, 0x2);
2138 goto skip_fsfstatus;
2139 case FSF_REF_TAG_CHECK_FAILURE:
2140 zfcp_scsi_dif_sense_error(scpnt, 0x3);
2141 goto skip_fsfstatus;
2143 fcp_rsp = (struct fcp_resp_with_ext *) &req->qtcb->bottom.io.fcp_rsp;
2144 zfcp_fc_eval_fcp_rsp(fcp_rsp, scpnt);
2147 zfcp_fsf_req_trace(req, scpnt);
2148 zfcp_dbf_scsi_result(scpnt, req);
2150 scpnt->host_scribble = NULL;
2151 (scpnt->scsi_done) (scpnt);
2153 * We must hold this lock until scsi_done has been called.
2154 * Otherwise we may call scsi_done after abort regarding this
2155 * command has completed.
2156 * Note: scsi_done must not block!
2158 read_unlock_irqrestore(&req->adapter->abort_lock, flags);
2161 static int zfcp_fsf_set_data_dir(struct scsi_cmnd *scsi_cmnd, u32 *data_dir)
2163 switch (scsi_get_prot_op(scsi_cmnd)) {
2164 case SCSI_PROT_NORMAL:
2165 switch (scsi_cmnd->sc_data_direction) {
2167 *data_dir = FSF_DATADIR_CMND;
2169 case DMA_FROM_DEVICE:
2170 *data_dir = FSF_DATADIR_READ;
2173 *data_dir = FSF_DATADIR_WRITE;
2175 case DMA_BIDIRECTIONAL:
2180 case SCSI_PROT_READ_STRIP:
2181 *data_dir = FSF_DATADIR_DIF_READ_STRIP;
2183 case SCSI_PROT_WRITE_INSERT:
2184 *data_dir = FSF_DATADIR_DIF_WRITE_INSERT;
2186 case SCSI_PROT_READ_PASS:
2187 *data_dir = FSF_DATADIR_DIF_READ_CONVERT;
2189 case SCSI_PROT_WRITE_PASS:
2190 *data_dir = FSF_DATADIR_DIF_WRITE_CONVERT;
2200 * zfcp_fsf_fcp_cmnd - initiate an FCP command (for a SCSI command)
2201 * @scsi_cmnd: scsi command to be sent
2203 int zfcp_fsf_fcp_cmnd(struct scsi_cmnd *scsi_cmnd)
2205 struct zfcp_fsf_req *req;
2206 struct fcp_cmnd *fcp_cmnd;
2207 u8 sbtype = SBAL_SFLAGS0_TYPE_READ;
2209 struct scsi_device *sdev = scsi_cmnd->device;
2210 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
2211 struct zfcp_adapter *adapter = zfcp_sdev->port->adapter;
2212 struct zfcp_qdio *qdio = adapter->qdio;
2213 struct fsf_qtcb_bottom_io *io;
2214 unsigned long flags;
2216 if (unlikely(!(atomic_read(&zfcp_sdev->status) &
2217 ZFCP_STATUS_COMMON_UNBLOCKED)))
2220 spin_lock_irqsave(&qdio->req_q_lock, flags);
2221 if (atomic_read(&qdio->req_q_free) <= 0) {
2222 atomic_inc(&qdio->req_q_full);
2226 if (scsi_cmnd->sc_data_direction == DMA_TO_DEVICE)
2227 sbtype = SBAL_SFLAGS0_TYPE_WRITE;
2229 req = zfcp_fsf_req_create(qdio, FSF_QTCB_FCP_CMND,
2230 sbtype, adapter->pool.scsi_req);
2233 retval = PTR_ERR(req);
2237 scsi_cmnd->host_scribble = (unsigned char *) req->req_id;
2239 io = &req->qtcb->bottom.io;
2240 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
2241 req->data = scsi_cmnd;
2242 req->handler = zfcp_fsf_fcp_cmnd_handler;
2243 req->qtcb->header.lun_handle = zfcp_sdev->lun_handle;
2244 req->qtcb->header.port_handle = zfcp_sdev->port->handle;
2245 io->service_class = FSF_CLASS_3;
2246 io->fcp_cmnd_length = FCP_CMND_LEN;
2248 if (scsi_get_prot_op(scsi_cmnd) != SCSI_PROT_NORMAL) {
2249 io->data_block_length = scsi_cmnd->device->sector_size;
2250 io->ref_tag_value = scsi_get_lba(scsi_cmnd) & 0xFFFFFFFF;
2253 if (zfcp_fsf_set_data_dir(scsi_cmnd, &io->data_direction))
2254 goto failed_scsi_cmnd;
2256 fcp_cmnd = (struct fcp_cmnd *) &req->qtcb->bottom.io.fcp_cmnd;
2257 zfcp_fc_scsi_to_fcp(fcp_cmnd, scsi_cmnd, 0);
2259 if (scsi_prot_sg_count(scsi_cmnd)) {
2260 zfcp_qdio_set_data_div(qdio, &req->qdio_req,
2261 scsi_prot_sg_count(scsi_cmnd));
2262 retval = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req,
2263 scsi_prot_sglist(scsi_cmnd));
2265 goto failed_scsi_cmnd;
2266 io->prot_data_length = zfcp_qdio_real_bytes(
2267 scsi_prot_sglist(scsi_cmnd));
2270 retval = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req,
2271 scsi_sglist(scsi_cmnd));
2272 if (unlikely(retval))
2273 goto failed_scsi_cmnd;
2275 zfcp_qdio_set_sbale_last(adapter->qdio, &req->qdio_req);
2276 if (zfcp_adapter_multi_buffer_active(adapter))
2277 zfcp_qdio_set_scount(qdio, &req->qdio_req);
2279 retval = zfcp_fsf_req_send(req);
2280 if (unlikely(retval))
2281 goto failed_scsi_cmnd;
2286 zfcp_fsf_req_free(req);
2287 scsi_cmnd->host_scribble = NULL;
2289 spin_unlock_irqrestore(&qdio->req_q_lock, flags);
2293 static void zfcp_fsf_fcp_task_mgmt_handler(struct zfcp_fsf_req *req)
2295 struct fcp_resp_with_ext *fcp_rsp;
2296 struct fcp_resp_rsp_info *rsp_info;
2298 zfcp_fsf_fcp_handler_common(req);
2300 fcp_rsp = (struct fcp_resp_with_ext *) &req->qtcb->bottom.io.fcp_rsp;
2301 rsp_info = (struct fcp_resp_rsp_info *) &fcp_rsp[1];
2303 if ((rsp_info->rsp_code != FCP_TMF_CMPL) ||
2304 (req->status & ZFCP_STATUS_FSFREQ_ERROR))
2305 req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED;
2309 * zfcp_fsf_fcp_task_mgmt - send SCSI task management command
2310 * @scmnd: SCSI command to send the task management command for
2311 * @tm_flags: unsigned byte for task management flags
2312 * Returns: on success pointer to struct fsf_req, NULL otherwise
2314 struct zfcp_fsf_req *zfcp_fsf_fcp_task_mgmt(struct scsi_cmnd *scmnd,
2317 struct zfcp_fsf_req *req = NULL;
2318 struct fcp_cmnd *fcp_cmnd;
2319 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scmnd->device);
2320 struct zfcp_qdio *qdio = zfcp_sdev->port->adapter->qdio;
2322 if (unlikely(!(atomic_read(&zfcp_sdev->status) &
2323 ZFCP_STATUS_COMMON_UNBLOCKED)))
2326 spin_lock_irq(&qdio->req_q_lock);
2327 if (zfcp_qdio_sbal_get(qdio))
2330 req = zfcp_fsf_req_create(qdio, FSF_QTCB_FCP_CMND,
2331 SBAL_SFLAGS0_TYPE_WRITE,
2332 qdio->adapter->pool.scsi_req);
2340 req->handler = zfcp_fsf_fcp_task_mgmt_handler;
2341 req->qtcb->header.lun_handle = zfcp_sdev->lun_handle;
2342 req->qtcb->header.port_handle = zfcp_sdev->port->handle;
2343 req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND;
2344 req->qtcb->bottom.io.service_class = FSF_CLASS_3;
2345 req->qtcb->bottom.io.fcp_cmnd_length = FCP_CMND_LEN;
2347 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
2349 fcp_cmnd = (struct fcp_cmnd *) &req->qtcb->bottom.io.fcp_cmnd;
2350 zfcp_fc_scsi_to_fcp(fcp_cmnd, scmnd, tm_flags);
2352 zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT);
2353 if (!zfcp_fsf_req_send(req))
2356 zfcp_fsf_req_free(req);
2359 spin_unlock_irq(&qdio->req_q_lock);
2364 * zfcp_fsf_reqid_check - validate req_id contained in SBAL returned by QDIO
2365 * @adapter: pointer to struct zfcp_adapter
2366 * @sbal_idx: response queue index of SBAL to be processed
2368 void zfcp_fsf_reqid_check(struct zfcp_qdio *qdio, int sbal_idx)
2370 struct zfcp_adapter *adapter = qdio->adapter;
2371 struct qdio_buffer *sbal = qdio->res_q[sbal_idx];
2372 struct qdio_buffer_element *sbale;
2373 struct zfcp_fsf_req *fsf_req;
2374 unsigned long req_id;
2377 for (idx = 0; idx < QDIO_MAX_ELEMENTS_PER_BUFFER; idx++) {
2379 sbale = &sbal->element[idx];
2380 req_id = (unsigned long) sbale->addr;
2381 fsf_req = zfcp_reqlist_find_rm(adapter->req_list, req_id);
2385 * Unknown request means that we have potentially memory
2386 * corruption and must stop the machine immediately.
2388 zfcp_qdio_siosl(adapter);
2389 panic("error: unknown req_id (%lx) on adapter %s.\n",
2390 req_id, dev_name(&adapter->ccw_device->dev));
2393 fsf_req->qdio_req.sbal_response = sbal_idx;
2394 zfcp_fsf_req_complete(fsf_req);
2396 if (likely(sbale->eflags & SBAL_EFLAGS_LAST_ENTRY))