1
2
3
4
5
6
7
8
9#define KMSG_COMPONENT "zfcp"
10#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
11
12#include <linux/blktrace_api.h>
13#include "zfcp_ext.h"
14
15#define ZFCP_REQ_AUTO_CLEANUP 0x00000002
16#define ZFCP_REQ_NO_QTCB 0x00000008
17
18static void zfcp_fsf_request_timeout_handler(unsigned long data)
19{
20 struct zfcp_adapter *adapter = (struct zfcp_adapter *) data;
21 zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED,
22 "fsrth_1", NULL);
23}
24
25static void zfcp_fsf_start_timer(struct zfcp_fsf_req *fsf_req,
26 unsigned long timeout)
27{
28 fsf_req->timer.function = zfcp_fsf_request_timeout_handler;
29 fsf_req->timer.data = (unsigned long) fsf_req->adapter;
30 fsf_req->timer.expires = jiffies + timeout;
31 add_timer(&fsf_req->timer);
32}
33
34static void zfcp_fsf_start_erp_timer(struct zfcp_fsf_req *fsf_req)
35{
36 BUG_ON(!fsf_req->erp_action);
37 fsf_req->timer.function = zfcp_erp_timeout_handler;
38 fsf_req->timer.data = (unsigned long) fsf_req->erp_action;
39 fsf_req->timer.expires = jiffies + 30 * HZ;
40 add_timer(&fsf_req->timer);
41}
42
43
44static u32 fsf_qtcb_type[] = {
45 [FSF_QTCB_FCP_CMND] = FSF_IO_COMMAND,
46 [FSF_QTCB_ABORT_FCP_CMND] = FSF_SUPPORT_COMMAND,
47 [FSF_QTCB_OPEN_PORT_WITH_DID] = FSF_SUPPORT_COMMAND,
48 [FSF_QTCB_OPEN_LUN] = FSF_SUPPORT_COMMAND,
49 [FSF_QTCB_CLOSE_LUN] = FSF_SUPPORT_COMMAND,
50 [FSF_QTCB_CLOSE_PORT] = FSF_SUPPORT_COMMAND,
51 [FSF_QTCB_CLOSE_PHYSICAL_PORT] = FSF_SUPPORT_COMMAND,
52 [FSF_QTCB_SEND_ELS] = FSF_SUPPORT_COMMAND,
53 [FSF_QTCB_SEND_GENERIC] = FSF_SUPPORT_COMMAND,
54 [FSF_QTCB_EXCHANGE_CONFIG_DATA] = FSF_CONFIG_COMMAND,
55 [FSF_QTCB_EXCHANGE_PORT_DATA] = FSF_PORT_COMMAND,
56 [FSF_QTCB_DOWNLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND,
57 [FSF_QTCB_UPLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND
58};
59
60static void zfcp_act_eval_err(struct zfcp_adapter *adapter, u32 table)
61{
62 u16 subtable = table >> 16;
63 u16 rule = table & 0xffff;
64 const char *act_type[] = { "unknown", "OS", "WWPN", "DID", "LUN" };
65
66 if (subtable && subtable < ARRAY_SIZE(act_type))
67 dev_warn(&adapter->ccw_device->dev,
68 "Access denied according to ACT rule type %s, "
69 "rule %d\n", act_type[subtable], rule);
70}
71
72static void zfcp_fsf_access_denied_port(struct zfcp_fsf_req *req,
73 struct zfcp_port *port)
74{
75 struct fsf_qtcb_header *header = &req->qtcb->header;
76 dev_warn(&req->adapter->ccw_device->dev,
77 "Access denied to port 0x%016Lx\n",
78 (unsigned long long)port->wwpn);
79 zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[0]);
80 zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[1]);
81 zfcp_erp_port_access_denied(port, "fspad_1", req);
82 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
83}
84
85static void zfcp_fsf_access_denied_unit(struct zfcp_fsf_req *req,
86 struct zfcp_unit *unit)
87{
88 struct fsf_qtcb_header *header = &req->qtcb->header;
89 dev_warn(&req->adapter->ccw_device->dev,
90 "Access denied to unit 0x%016Lx on port 0x%016Lx\n",
91 (unsigned long long)unit->fcp_lun,
92 (unsigned long long)unit->port->wwpn);
93 zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[0]);
94 zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[1]);
95 zfcp_erp_unit_access_denied(unit, "fsuad_1", req);
96 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
97}
98
99static void zfcp_fsf_class_not_supp(struct zfcp_fsf_req *req)
100{
101 dev_err(&req->adapter->ccw_device->dev, "FCP device not "
102 "operational because of an unsupported FC class\n");
103 zfcp_erp_adapter_shutdown(req->adapter, 0, "fscns_1", req);
104 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
105}
106
107
108
109
110
111void zfcp_fsf_req_free(struct zfcp_fsf_req *req)
112{
113 if (likely(req->pool)) {
114 mempool_free(req, req->pool);
115 return;
116 }
117
118 if (req->qtcb) {
119 kmem_cache_free(zfcp_data.fsf_req_qtcb_cache, req);
120 return;
121 }
122}
123
124
125
126
127
128
129
130
131
132
133void zfcp_fsf_req_dismiss_all(struct zfcp_adapter *adapter)
134{
135 struct zfcp_fsf_req *req, *tmp;
136 unsigned long flags;
137 LIST_HEAD(remove_queue);
138 unsigned int i;
139
140 BUG_ON(atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP);
141 spin_lock_irqsave(&adapter->req_list_lock, flags);
142 for (i = 0; i < REQUEST_LIST_SIZE; i++)
143 list_splice_init(&adapter->req_list[i], &remove_queue);
144 spin_unlock_irqrestore(&adapter->req_list_lock, flags);
145
146 list_for_each_entry_safe(req, tmp, &remove_queue, list) {
147 list_del(&req->list);
148 req->status |= ZFCP_STATUS_FSFREQ_DISMISSED;
149 zfcp_fsf_req_complete(req);
150 }
151}
152
153static void zfcp_fsf_status_read_port_closed(struct zfcp_fsf_req *req)
154{
155 struct fsf_status_read_buffer *sr_buf = req->data;
156 struct zfcp_adapter *adapter = req->adapter;
157 struct zfcp_port *port;
158 int d_id = sr_buf->d_id & ZFCP_DID_MASK;
159 unsigned long flags;
160
161 read_lock_irqsave(&zfcp_data.config_lock, flags);
162 list_for_each_entry(port, &adapter->port_list_head, list)
163 if (port->d_id == d_id) {
164 read_unlock_irqrestore(&zfcp_data.config_lock, flags);
165 zfcp_erp_port_reopen(port, 0, "fssrpc1", req);
166 return;
167 }
168 read_unlock_irqrestore(&zfcp_data.config_lock, flags);
169}
170
171static void zfcp_fsf_link_down_info_eval(struct zfcp_fsf_req *req, char *id,
172 struct fsf_link_down_info *link_down)
173{
174 struct zfcp_adapter *adapter = req->adapter;
175 unsigned long flags;
176
177 if (atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED)
178 return;
179
180 atomic_set_mask(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED, &adapter->status);
181
182 read_lock_irqsave(&zfcp_data.config_lock, flags);
183 zfcp_scsi_schedule_rports_block(adapter);
184 read_unlock_irqrestore(&zfcp_data.config_lock, flags);
185
186 if (!link_down)
187 goto out;
188
189 switch (link_down->error_code) {
190 case FSF_PSQ_LINK_NO_LIGHT:
191 dev_warn(&req->adapter->ccw_device->dev,
192 "There is no light signal from the local "
193 "fibre channel cable\n");
194 break;
195 case FSF_PSQ_LINK_WRAP_PLUG:
196 dev_warn(&req->adapter->ccw_device->dev,
197 "There is a wrap plug instead of a fibre "
198 "channel cable\n");
199 break;
200 case FSF_PSQ_LINK_NO_FCP:
201 dev_warn(&req->adapter->ccw_device->dev,
202 "The adjacent fibre channel node does not "
203 "support FCP\n");
204 break;
205 case FSF_PSQ_LINK_FIRMWARE_UPDATE:
206 dev_warn(&req->adapter->ccw_device->dev,
207 "The FCP device is suspended because of a "
208 "firmware update\n");
209 break;
210 case FSF_PSQ_LINK_INVALID_WWPN:
211 dev_warn(&req->adapter->ccw_device->dev,
212 "The FCP device detected a WWPN that is "
213 "duplicate or not valid\n");
214 break;
215 case FSF_PSQ_LINK_NO_NPIV_SUPPORT:
216 dev_warn(&req->adapter->ccw_device->dev,
217 "The fibre channel fabric does not support NPIV\n");
218 break;
219 case FSF_PSQ_LINK_NO_FCP_RESOURCES:
220 dev_warn(&req->adapter->ccw_device->dev,
221 "The FCP adapter cannot support more NPIV ports\n");
222 break;
223 case FSF_PSQ_LINK_NO_FABRIC_RESOURCES:
224 dev_warn(&req->adapter->ccw_device->dev,
225 "The adjacent switch cannot support "
226 "more NPIV ports\n");
227 break;
228 case FSF_PSQ_LINK_FABRIC_LOGIN_UNABLE:
229 dev_warn(&req->adapter->ccw_device->dev,
230 "The FCP adapter could not log in to the "
231 "fibre channel fabric\n");
232 break;
233 case FSF_PSQ_LINK_WWPN_ASSIGNMENT_CORRUPTED:
234 dev_warn(&req->adapter->ccw_device->dev,
235 "The WWPN assignment file on the FCP adapter "
236 "has been damaged\n");
237 break;
238 case FSF_PSQ_LINK_MODE_TABLE_CURRUPTED:
239 dev_warn(&req->adapter->ccw_device->dev,
240 "The mode table on the FCP adapter "
241 "has been damaged\n");
242 break;
243 case FSF_PSQ_LINK_NO_WWPN_ASSIGNMENT:
244 dev_warn(&req->adapter->ccw_device->dev,
245 "All NPIV ports on the FCP adapter have "
246 "been assigned\n");
247 break;
248 default:
249 dev_warn(&req->adapter->ccw_device->dev,
250 "The link between the FCP adapter and "
251 "the FC fabric is down\n");
252 }
253out:
254 zfcp_erp_adapter_failed(adapter, id, req);
255}
256
257static void zfcp_fsf_status_read_link_down(struct zfcp_fsf_req *req)
258{
259 struct fsf_status_read_buffer *sr_buf = req->data;
260 struct fsf_link_down_info *ldi =
261 (struct fsf_link_down_info *) &sr_buf->payload;
262
263 switch (sr_buf->status_subtype) {
264 case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK:
265 zfcp_fsf_link_down_info_eval(req, "fssrld1", ldi);
266 break;
267 case FSF_STATUS_READ_SUB_FDISC_FAILED:
268 zfcp_fsf_link_down_info_eval(req, "fssrld2", ldi);
269 break;
270 case FSF_STATUS_READ_SUB_FIRMWARE_UPDATE:
271 zfcp_fsf_link_down_info_eval(req, "fssrld3", NULL);
272 };
273}
274
275static void zfcp_fsf_status_read_handler(struct zfcp_fsf_req *req)
276{
277 struct zfcp_adapter *adapter = req->adapter;
278 struct fsf_status_read_buffer *sr_buf = req->data;
279
280 if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) {
281 zfcp_hba_dbf_event_fsf_unsol("dism", adapter, sr_buf);
282 mempool_free(sr_buf, adapter->pool.data_status_read);
283 zfcp_fsf_req_free(req);
284 return;
285 }
286
287 zfcp_hba_dbf_event_fsf_unsol("read", adapter, sr_buf);
288
289 switch (sr_buf->status_type) {
290 case FSF_STATUS_READ_PORT_CLOSED:
291 zfcp_fsf_status_read_port_closed(req);
292 break;
293 case FSF_STATUS_READ_INCOMING_ELS:
294 zfcp_fc_incoming_els(req);
295 break;
296 case FSF_STATUS_READ_SENSE_DATA_AVAIL:
297 break;
298 case FSF_STATUS_READ_BIT_ERROR_THRESHOLD:
299 dev_warn(&adapter->ccw_device->dev,
300 "The error threshold for checksum statistics "
301 "has been exceeded\n");
302 zfcp_hba_dbf_event_berr(adapter, req);
303 break;
304 case FSF_STATUS_READ_LINK_DOWN:
305 zfcp_fsf_status_read_link_down(req);
306 break;
307 case FSF_STATUS_READ_LINK_UP:
308 dev_info(&adapter->ccw_device->dev,
309 "The local link has been restored\n");
310
311 zfcp_erp_modify_adapter_status(adapter, "fssrh_1", NULL,
312 ZFCP_STATUS_COMMON_RUNNING,
313 ZFCP_SET);
314 zfcp_erp_adapter_reopen(adapter,
315 ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED |
316 ZFCP_STATUS_COMMON_ERP_FAILED,
317 "fssrh_2", req);
318 break;
319 case FSF_STATUS_READ_NOTIFICATION_LOST:
320 if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_ACT_UPDATED)
321 zfcp_erp_adapter_access_changed(adapter, "fssrh_3",
322 req);
323 if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_INCOMING_ELS)
324 schedule_work(&adapter->scan_work);
325 break;
326 case FSF_STATUS_READ_CFDC_UPDATED:
327 zfcp_erp_adapter_access_changed(adapter, "fssrh_4", req);
328 break;
329 case FSF_STATUS_READ_FEATURE_UPDATE_ALERT:
330 adapter->adapter_features = sr_buf->payload.word[0];
331 break;
332 }
333
334 mempool_free(sr_buf, adapter->pool.data_status_read);
335 zfcp_fsf_req_free(req);
336
337 atomic_inc(&adapter->stat_miss);
338 queue_work(zfcp_data.work_queue, &adapter->stat_work);
339}
340
341static void zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req *req)
342{
343 switch (req->qtcb->header.fsf_status_qual.word[0]) {
344 case FSF_SQ_FCP_RSP_AVAILABLE:
345 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
346 case FSF_SQ_NO_RETRY_POSSIBLE:
347 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
348 return;
349 case FSF_SQ_COMMAND_ABORTED:
350 req->status |= ZFCP_STATUS_FSFREQ_ABORTED;
351 break;
352 case FSF_SQ_NO_RECOM:
353 dev_err(&req->adapter->ccw_device->dev,
354 "The FCP adapter reported a problem "
355 "that cannot be recovered\n");
356 zfcp_erp_adapter_shutdown(req->adapter, 0, "fsfsqe1", req);
357 break;
358 }
359
360 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
361}
362
363static void zfcp_fsf_fsfstatus_eval(struct zfcp_fsf_req *req)
364{
365 if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR))
366 return;
367
368 switch (req->qtcb->header.fsf_status) {
369 case FSF_UNKNOWN_COMMAND:
370 dev_err(&req->adapter->ccw_device->dev,
371 "The FCP adapter does not recognize the command 0x%x\n",
372 req->qtcb->header.fsf_command);
373 zfcp_erp_adapter_shutdown(req->adapter, 0, "fsfse_1", req);
374 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
375 break;
376 case FSF_ADAPTER_STATUS_AVAILABLE:
377 zfcp_fsf_fsfstatus_qual_eval(req);
378 break;
379 }
380}
381
382static void zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *req)
383{
384 struct zfcp_adapter *adapter = req->adapter;
385 struct fsf_qtcb *qtcb = req->qtcb;
386 union fsf_prot_status_qual *psq = &qtcb->prefix.prot_status_qual;
387
388 zfcp_hba_dbf_event_fsf_response(req);
389
390 if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) {
391 req->status |= ZFCP_STATUS_FSFREQ_ERROR |
392 ZFCP_STATUS_FSFREQ_RETRY;
393 return;
394 }
395
396 switch (qtcb->prefix.prot_status) {
397 case FSF_PROT_GOOD:
398 case FSF_PROT_FSF_STATUS_PRESENTED:
399 return;
400 case FSF_PROT_QTCB_VERSION_ERROR:
401 dev_err(&adapter->ccw_device->dev,
402 "QTCB version 0x%x not supported by FCP adapter "
403 "(0x%x to 0x%x)\n", FSF_QTCB_CURRENT_VERSION,
404 psq->word[0], psq->word[1]);
405 zfcp_erp_adapter_shutdown(adapter, 0, "fspse_1", req);
406 break;
407 case FSF_PROT_ERROR_STATE:
408 case FSF_PROT_SEQ_NUMB_ERROR:
409 zfcp_erp_adapter_reopen(adapter, 0, "fspse_2", req);
410 req->status |= ZFCP_STATUS_FSFREQ_RETRY;
411 break;
412 case FSF_PROT_UNSUPP_QTCB_TYPE:
413 dev_err(&adapter->ccw_device->dev,
414 "The QTCB type is not supported by the FCP adapter\n");
415 zfcp_erp_adapter_shutdown(adapter, 0, "fspse_3", req);
416 break;
417 case FSF_PROT_HOST_CONNECTION_INITIALIZING:
418 atomic_set_mask(ZFCP_STATUS_ADAPTER_HOST_CON_INIT,
419 &adapter->status);
420 break;
421 case FSF_PROT_DUPLICATE_REQUEST_ID:
422 dev_err(&adapter->ccw_device->dev,
423 "0x%Lx is an ambiguous request identifier\n",
424 (unsigned long long)qtcb->bottom.support.req_handle);
425 zfcp_erp_adapter_shutdown(adapter, 0, "fspse_4", req);
426 break;
427 case FSF_PROT_LINK_DOWN:
428 zfcp_fsf_link_down_info_eval(req, "fspse_5",
429 &psq->link_down_info);
430
431 zfcp_erp_adapter_reopen(adapter, 0, "fspse_6", req);
432 break;
433 case FSF_PROT_REEST_QUEUE:
434
435 zfcp_erp_modify_adapter_status(adapter, "fspse_7", NULL,
436 ZFCP_STATUS_COMMON_RUNNING,
437 ZFCP_SET);
438 zfcp_erp_adapter_reopen(adapter,
439 ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED |
440 ZFCP_STATUS_COMMON_ERP_FAILED,
441 "fspse_8", req);
442 break;
443 default:
444 dev_err(&adapter->ccw_device->dev,
445 "0x%x is not a valid transfer protocol status\n",
446 qtcb->prefix.prot_status);
447 zfcp_erp_adapter_shutdown(adapter, 0, "fspse_9", req);
448 }
449 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
450}
451
452
453
454
455
456
457
458
459
460
461void zfcp_fsf_req_complete(struct zfcp_fsf_req *req)
462{
463 if (unlikely(req->fsf_command == FSF_QTCB_UNSOLICITED_STATUS)) {
464 zfcp_fsf_status_read_handler(req);
465 return;
466 }
467
468 del_timer(&req->timer);
469 zfcp_fsf_protstatus_eval(req);
470 zfcp_fsf_fsfstatus_eval(req);
471 req->handler(req);
472
473 if (req->erp_action)
474 zfcp_erp_notify(req->erp_action, 0);
475 req->status |= ZFCP_STATUS_FSFREQ_COMPLETED;
476
477 if (likely(req->status & ZFCP_STATUS_FSFREQ_CLEANUP))
478 zfcp_fsf_req_free(req);
479 else
480
481
482
483
484
485
486
487
488
489
490
491 wake_up(&req->completion_wq);
492}
493
494static int zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req *req)
495{
496 struct fsf_qtcb_bottom_config *bottom;
497 struct zfcp_adapter *adapter = req->adapter;
498 struct Scsi_Host *shost = adapter->scsi_host;
499
500 bottom = &req->qtcb->bottom.config;
501
502 if (req->data)
503 memcpy(req->data, bottom, sizeof(*bottom));
504
505 fc_host_node_name(shost) = bottom->nport_serv_param.wwnn;
506 fc_host_port_name(shost) = bottom->nport_serv_param.wwpn;
507 fc_host_port_id(shost) = bottom->s_id & ZFCP_DID_MASK;
508 fc_host_speed(shost) = bottom->fc_link_speed;
509 fc_host_supported_classes(shost) = FC_COS_CLASS2 | FC_COS_CLASS3;
510
511 adapter->hydra_version = bottom->adapter_type;
512 adapter->timer_ticks = bottom->timer_interval;
513
514 if (fc_host_permanent_port_name(shost) == -1)
515 fc_host_permanent_port_name(shost) = fc_host_port_name(shost);
516
517 switch (bottom->fc_topology) {
518 case FSF_TOPO_P2P:
519 adapter->peer_d_id = bottom->peer_d_id & ZFCP_DID_MASK;
520 adapter->peer_wwpn = bottom->plogi_payload.wwpn;
521 adapter->peer_wwnn = bottom->plogi_payload.wwnn;
522 fc_host_port_type(shost) = FC_PORTTYPE_PTP;
523 break;
524 case FSF_TOPO_FABRIC:
525 fc_host_port_type(shost) = FC_PORTTYPE_NPORT;
526 break;
527 case FSF_TOPO_AL:
528 fc_host_port_type(shost) = FC_PORTTYPE_NLPORT;
529 default:
530 dev_err(&adapter->ccw_device->dev,
531 "Unknown or unsupported arbitrated loop "
532 "fibre channel topology detected\n");
533 zfcp_erp_adapter_shutdown(adapter, 0, "fsece_1", req);
534 return -EIO;
535 }
536
537 return 0;
538}
539
540static void zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *req)
541{
542 struct zfcp_adapter *adapter = req->adapter;
543 struct fsf_qtcb *qtcb = req->qtcb;
544 struct fsf_qtcb_bottom_config *bottom = &qtcb->bottom.config;
545 struct Scsi_Host *shost = adapter->scsi_host;
546
547 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
548 return;
549
550 adapter->fsf_lic_version = bottom->lic_version;
551 adapter->adapter_features = bottom->adapter_features;
552 adapter->connection_features = bottom->connection_features;
553 adapter->peer_wwpn = 0;
554 adapter->peer_wwnn = 0;
555 adapter->peer_d_id = 0;
556
557 switch (qtcb->header.fsf_status) {
558 case FSF_GOOD:
559 if (zfcp_fsf_exchange_config_evaluate(req))
560 return;
561
562 if (bottom->max_qtcb_size < sizeof(struct fsf_qtcb)) {
563 dev_err(&adapter->ccw_device->dev,
564 "FCP adapter maximum QTCB size (%d bytes) "
565 "is too small\n",
566 bottom->max_qtcb_size);
567 zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh1", req);
568 return;
569 }
570 atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK,
571 &adapter->status);
572 break;
573 case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE:
574 fc_host_node_name(shost) = 0;
575 fc_host_port_name(shost) = 0;
576 fc_host_port_id(shost) = 0;
577 fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN;
578 fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN;
579 adapter->hydra_version = 0;
580
581 atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK,
582 &adapter->status);
583
584 zfcp_fsf_link_down_info_eval(req, "fsecdh2",
585 &qtcb->header.fsf_status_qual.link_down_info);
586 break;
587 default:
588 zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh3", req);
589 return;
590 }
591
592 if (adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT) {
593 adapter->hardware_version = bottom->hardware_version;
594 memcpy(fc_host_serial_number(shost), bottom->serial_number,
595 min(FC_SERIAL_NUMBER_SIZE, 17));
596 EBCASC(fc_host_serial_number(shost),
597 min(FC_SERIAL_NUMBER_SIZE, 17));
598 }
599
600 if (FSF_QTCB_CURRENT_VERSION < bottom->low_qtcb_version) {
601 dev_err(&adapter->ccw_device->dev,
602 "The FCP adapter only supports newer "
603 "control block versions\n");
604 zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh4", req);
605 return;
606 }
607 if (FSF_QTCB_CURRENT_VERSION > bottom->high_qtcb_version) {
608 dev_err(&adapter->ccw_device->dev,
609 "The FCP adapter only supports older "
610 "control block versions\n");
611 zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh5", req);
612 }
613}
614
615static void zfcp_fsf_exchange_port_evaluate(struct zfcp_fsf_req *req)
616{
617 struct zfcp_adapter *adapter = req->adapter;
618 struct fsf_qtcb_bottom_port *bottom = &req->qtcb->bottom.port;
619 struct Scsi_Host *shost = adapter->scsi_host;
620
621 if (req->data)
622 memcpy(req->data, bottom, sizeof(*bottom));
623
624 if (adapter->connection_features & FSF_FEATURE_NPIV_MODE) {
625 fc_host_permanent_port_name(shost) = bottom->wwpn;
626 fc_host_port_type(shost) = FC_PORTTYPE_NPIV;
627 } else
628 fc_host_permanent_port_name(shost) = fc_host_port_name(shost);
629 fc_host_maxframe_size(shost) = bottom->maximum_frame_size;
630 fc_host_supported_speeds(shost) = bottom->supported_speed;
631}
632
633static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *req)
634{
635 struct fsf_qtcb *qtcb = req->qtcb;
636
637 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
638 return;
639
640 switch (qtcb->header.fsf_status) {
641 case FSF_GOOD:
642 zfcp_fsf_exchange_port_evaluate(req);
643 break;
644 case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE:
645 zfcp_fsf_exchange_port_evaluate(req);
646 zfcp_fsf_link_down_info_eval(req, "fsepdh1",
647 &qtcb->header.fsf_status_qual.link_down_info);
648 break;
649 }
650}
651
652static int zfcp_fsf_sbal_check(struct zfcp_adapter *adapter)
653{
654 struct zfcp_qdio_queue *req_q = &adapter->req_q;
655
656 spin_lock_bh(&adapter->req_q_lock);
657 if (atomic_read(&req_q->count))
658 return 1;
659 spin_unlock_bh(&adapter->req_q_lock);
660 return 0;
661}
662
663static int zfcp_fsf_req_sbal_get(struct zfcp_adapter *adapter)
664{
665 long ret;
666
667 spin_unlock_bh(&adapter->req_q_lock);
668 ret = wait_event_interruptible_timeout(adapter->request_wq,
669 zfcp_fsf_sbal_check(adapter), 5 * HZ);
670 if (ret > 0)
671 return 0;
672 if (!ret)
673 atomic_inc(&adapter->qdio_outb_full);
674
675 spin_lock_bh(&adapter->req_q_lock);
676 return -EIO;
677}
678
679static struct zfcp_fsf_req *zfcp_fsf_alloc_noqtcb(mempool_t *pool)
680{
681 struct zfcp_fsf_req *req;
682 req = mempool_alloc(pool, GFP_ATOMIC);
683 if (!req)
684 return NULL;
685 memset(req, 0, sizeof(*req));
686 req->pool = pool;
687 return req;
688}
689
690static struct zfcp_fsf_req *zfcp_fsf_alloc_qtcb(mempool_t *pool)
691{
692 struct zfcp_fsf_req_qtcb *qtcb;
693
694 if (likely(pool))
695 qtcb = mempool_alloc(pool, GFP_ATOMIC);
696 else
697 qtcb = kmem_cache_alloc(zfcp_data.fsf_req_qtcb_cache,
698 GFP_ATOMIC);
699 if (unlikely(!qtcb))
700 return NULL;
701
702 memset(qtcb, 0, sizeof(*qtcb));
703 qtcb->fsf_req.qtcb = &qtcb->qtcb;
704 qtcb->fsf_req.pool = pool;
705
706 return &qtcb->fsf_req;
707}
708
709static struct zfcp_fsf_req *zfcp_fsf_req_create(struct zfcp_adapter *adapter,
710 u32 fsf_cmd, int req_flags,
711 mempool_t *pool)
712{
713 struct qdio_buffer_element *sbale;
714
715 struct zfcp_fsf_req *req;
716 struct zfcp_qdio_queue *req_q = &adapter->req_q;
717
718 if (req_flags & ZFCP_REQ_NO_QTCB)
719 req = zfcp_fsf_alloc_noqtcb(pool);
720 else
721 req = zfcp_fsf_alloc_qtcb(pool);
722
723 if (unlikely(!req))
724 return ERR_PTR(-EIO);
725
726 if (adapter->req_no == 0)
727 adapter->req_no++;
728
729 INIT_LIST_HEAD(&req->list);
730 init_timer(&req->timer);
731 init_waitqueue_head(&req->completion_wq);
732
733 req->adapter = adapter;
734 req->fsf_command = fsf_cmd;
735 req->req_id = adapter->req_no;
736 req->sbal_number = 1;
737 req->sbal_first = req_q->first;
738 req->sbal_last = req_q->first;
739 req->sbale_curr = 1;
740
741 sbale = zfcp_qdio_sbale_req(req);
742 sbale[0].addr = (void *) req->req_id;
743 sbale[0].flags |= SBAL_FLAGS0_COMMAND;
744
745 if (likely(req->qtcb)) {
746 req->qtcb->prefix.req_seq_no = req->adapter->fsf_req_seq_no;
747 req->qtcb->prefix.req_id = req->req_id;
748 req->qtcb->prefix.ulp_info = 26;
749 req->qtcb->prefix.qtcb_type = fsf_qtcb_type[req->fsf_command];
750 req->qtcb->prefix.qtcb_version = FSF_QTCB_CURRENT_VERSION;
751 req->qtcb->header.req_handle = req->req_id;
752 req->qtcb->header.fsf_command = req->fsf_command;
753 req->seq_no = adapter->fsf_req_seq_no;
754 req->qtcb->prefix.req_seq_no = adapter->fsf_req_seq_no;
755 sbale[1].addr = (void *) req->qtcb;
756 sbale[1].length = sizeof(struct fsf_qtcb);
757 }
758
759 if (!(atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP)) {
760 zfcp_fsf_req_free(req);
761 return ERR_PTR(-EIO);
762 }
763
764 if (likely(req_flags & ZFCP_REQ_AUTO_CLEANUP))
765 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
766
767 return req;
768}
769
770static int zfcp_fsf_req_send(struct zfcp_fsf_req *req)
771{
772 struct zfcp_adapter *adapter = req->adapter;
773 unsigned long flags;
774 int idx;
775 int with_qtcb = (req->qtcb != NULL);
776
777
778 spin_lock_irqsave(&adapter->req_list_lock, flags);
779 idx = zfcp_reqlist_hash(req->req_id);
780 list_add_tail(&req->list, &adapter->req_list[idx]);
781 spin_unlock_irqrestore(&adapter->req_list_lock, flags);
782
783 req->qdio_outb_usage = atomic_read(&adapter->req_q.count);
784 req->issued = get_clock();
785 if (zfcp_qdio_send(req)) {
786 del_timer(&req->timer);
787 spin_lock_irqsave(&adapter->req_list_lock, flags);
788
789 if (zfcp_reqlist_find_safe(adapter, req))
790 zfcp_reqlist_remove(adapter, req);
791 spin_unlock_irqrestore(&adapter->req_list_lock, flags);
792 zfcp_erp_adapter_reopen(adapter, 0, "fsrs__1", req);
793 return -EIO;
794 }
795
796
797 if (with_qtcb)
798 adapter->fsf_req_seq_no++;
799 adapter->req_no++;
800
801 return 0;
802}
803
804
805
806
807
808
809
810int zfcp_fsf_status_read(struct zfcp_adapter *adapter)
811{
812 struct zfcp_fsf_req *req;
813 struct fsf_status_read_buffer *sr_buf;
814 struct qdio_buffer_element *sbale;
815 int retval = -EIO;
816
817 spin_lock_bh(&adapter->req_q_lock);
818 if (zfcp_fsf_req_sbal_get(adapter))
819 goto out;
820
821 req = zfcp_fsf_req_create(adapter, FSF_QTCB_UNSOLICITED_STATUS,
822 ZFCP_REQ_NO_QTCB,
823 adapter->pool.fsf_req_status_read);
824 if (IS_ERR(req)) {
825 retval = PTR_ERR(req);
826 goto out;
827 }
828
829 sbale = zfcp_qdio_sbale_req(req);
830 sbale[0].flags |= SBAL_FLAGS0_TYPE_STATUS;
831 sbale[2].flags |= SBAL_FLAGS_LAST_ENTRY;
832 req->sbale_curr = 2;
833
834 sr_buf = mempool_alloc(adapter->pool.data_status_read, GFP_ATOMIC);
835 if (!sr_buf) {
836 retval = -ENOMEM;
837 goto failed_buf;
838 }
839 memset(sr_buf, 0, sizeof(*sr_buf));
840 req->data = sr_buf;
841 sbale = zfcp_qdio_sbale_curr(req);
842 sbale->addr = (void *) sr_buf;
843 sbale->length = sizeof(*sr_buf);
844
845 retval = zfcp_fsf_req_send(req);
846 if (retval)
847 goto failed_req_send;
848
849 goto out;
850
851failed_req_send:
852 mempool_free(sr_buf, adapter->pool.data_status_read);
853failed_buf:
854 zfcp_fsf_req_free(req);
855 zfcp_hba_dbf_event_fsf_unsol("fail", adapter, NULL);
856out:
857 spin_unlock_bh(&adapter->req_q_lock);
858 return retval;
859}
860
861static void zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req *req)
862{
863 struct zfcp_unit *unit = req->data;
864 union fsf_status_qual *fsq = &req->qtcb->header.fsf_status_qual;
865
866 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
867 return;
868
869 switch (req->qtcb->header.fsf_status) {
870 case FSF_PORT_HANDLE_NOT_VALID:
871 if (fsq->word[0] == fsq->word[1]) {
872 zfcp_erp_adapter_reopen(unit->port->adapter, 0,
873 "fsafch1", req);
874 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
875 }
876 break;
877 case FSF_LUN_HANDLE_NOT_VALID:
878 if (fsq->word[0] == fsq->word[1]) {
879 zfcp_erp_port_reopen(unit->port, 0, "fsafch2", req);
880 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
881 }
882 break;
883 case FSF_FCP_COMMAND_DOES_NOT_EXIST:
884 req->status |= ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED;
885 break;
886 case FSF_PORT_BOXED:
887 zfcp_erp_port_boxed(unit->port, "fsafch3", req);
888 req->status |= ZFCP_STATUS_FSFREQ_ERROR |
889 ZFCP_STATUS_FSFREQ_RETRY;
890 break;
891 case FSF_LUN_BOXED:
892 zfcp_erp_unit_boxed(unit, "fsafch4", req);
893 req->status |= ZFCP_STATUS_FSFREQ_ERROR |
894 ZFCP_STATUS_FSFREQ_RETRY;
895 break;
896 case FSF_ADAPTER_STATUS_AVAILABLE:
897 switch (fsq->word[0]) {
898 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
899 zfcp_test_link(unit->port);
900 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
901 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
902 break;
903 }
904 break;
905 case FSF_GOOD:
906 req->status |= ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED;
907 break;
908 }
909}
910
911
912
913
914
915
916
917
918struct zfcp_fsf_req *zfcp_fsf_abort_fcp_command(unsigned long old_req_id,
919 struct zfcp_unit *unit)
920{
921 struct qdio_buffer_element *sbale;
922 struct zfcp_fsf_req *req = NULL;
923 struct zfcp_adapter *adapter = unit->port->adapter;
924
925 spin_lock_bh(&adapter->req_q_lock);
926 if (zfcp_fsf_req_sbal_get(adapter))
927 goto out;
928 req = zfcp_fsf_req_create(adapter, FSF_QTCB_ABORT_FCP_CMND,
929 0, adapter->pool.fsf_req_abort);
930 if (IS_ERR(req)) {
931 req = NULL;
932 goto out;
933 }
934
935 if (unlikely(!(atomic_read(&unit->status) &
936 ZFCP_STATUS_COMMON_UNBLOCKED)))
937 goto out_error_free;
938
939 sbale = zfcp_qdio_sbale_req(req);
940 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
941 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
942
943 req->data = unit;
944 req->handler = zfcp_fsf_abort_fcp_command_handler;
945 req->qtcb->header.lun_handle = unit->handle;
946 req->qtcb->header.port_handle = unit->port->handle;
947 req->qtcb->bottom.support.req_handle = (u64) old_req_id;
948
949 zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT);
950 if (!zfcp_fsf_req_send(req))
951 goto out;
952
953out_error_free:
954 zfcp_fsf_req_free(req);
955 req = NULL;
956out:
957 spin_unlock_bh(&adapter->req_q_lock);
958 return req;
959}
960
961static void zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *req)
962{
963 struct zfcp_adapter *adapter = req->adapter;
964 struct zfcp_send_ct *send_ct = req->data;
965 struct fsf_qtcb_header *header = &req->qtcb->header;
966
967 send_ct->status = -EINVAL;
968
969 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
970 goto skip_fsfstatus;
971
972 switch (header->fsf_status) {
973 case FSF_GOOD:
974 zfcp_san_dbf_event_ct_response(req);
975 send_ct->status = 0;
976 break;
977 case FSF_SERVICE_CLASS_NOT_SUPPORTED:
978 zfcp_fsf_class_not_supp(req);
979 break;
980 case FSF_ADAPTER_STATUS_AVAILABLE:
981 switch (header->fsf_status_qual.word[0]){
982 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
983 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
984 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
985 break;
986 }
987 break;
988 case FSF_ACCESS_DENIED:
989 break;
990 case FSF_PORT_BOXED:
991 req->status |= ZFCP_STATUS_FSFREQ_ERROR |
992 ZFCP_STATUS_FSFREQ_RETRY;
993 break;
994 case FSF_PORT_HANDLE_NOT_VALID:
995 zfcp_erp_adapter_reopen(adapter, 0, "fsscth1", req);
996 case FSF_GENERIC_COMMAND_REJECTED:
997 case FSF_PAYLOAD_SIZE_MISMATCH:
998 case FSF_REQUEST_SIZE_TOO_LARGE:
999 case FSF_RESPONSE_SIZE_TOO_LARGE:
1000 case FSF_SBAL_MISMATCH:
1001 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1002 break;
1003 }
1004
1005skip_fsfstatus:
1006 if (send_ct->handler)
1007 send_ct->handler(send_ct->handler_data);
1008}
1009
1010static int zfcp_fsf_setup_ct_els_sbals(struct zfcp_fsf_req *req,
1011 struct scatterlist *sg_req,
1012 struct scatterlist *sg_resp,
1013 int max_sbals)
1014{
1015 struct qdio_buffer_element *sbale = zfcp_qdio_sbale_req(req);
1016 u32 feat = req->adapter->adapter_features;
1017 int bytes;
1018
1019 if (!(feat & FSF_FEATURE_ELS_CT_CHAINED_SBALS)) {
1020 if (sg_req->length > PAGE_SIZE || sg_resp->length > PAGE_SIZE ||
1021 !sg_is_last(sg_req) || !sg_is_last(sg_resp))
1022 return -EOPNOTSUPP;
1023
1024 sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE_READ;
1025 sbale[2].addr = sg_virt(sg_req);
1026 sbale[2].length = sg_req->length;
1027 sbale[3].addr = sg_virt(sg_resp);
1028 sbale[3].length = sg_resp->length;
1029 sbale[3].flags |= SBAL_FLAGS_LAST_ENTRY;
1030 return 0;
1031 }
1032
1033 bytes = zfcp_qdio_sbals_from_sg(req, SBAL_FLAGS0_TYPE_WRITE_READ,
1034 sg_req, max_sbals);
1035 if (bytes <= 0)
1036 return -ENOMEM;
1037 req->qtcb->bottom.support.req_buf_length = bytes;
1038 req->sbale_curr = ZFCP_LAST_SBALE_PER_SBAL;
1039
1040 bytes = zfcp_qdio_sbals_from_sg(req, SBAL_FLAGS0_TYPE_WRITE_READ,
1041 sg_resp, max_sbals);
1042 if (bytes <= 0)
1043 return -ENOMEM;
1044 req->qtcb->bottom.support.resp_buf_length = bytes;
1045
1046 return 0;
1047}
1048
1049
1050
1051
1052
1053
1054
1055int zfcp_fsf_send_ct(struct zfcp_send_ct *ct, mempool_t *pool,
1056 struct zfcp_erp_action *erp_action)
1057{
1058 struct zfcp_wka_port *wka_port = ct->wka_port;
1059 struct zfcp_adapter *adapter = wka_port->adapter;
1060 struct zfcp_fsf_req *req;
1061 int ret = -EIO;
1062
1063 spin_lock_bh(&adapter->req_q_lock);
1064 if (zfcp_fsf_req_sbal_get(adapter))
1065 goto out;
1066
1067 req = zfcp_fsf_req_create(adapter, FSF_QTCB_SEND_GENERIC,
1068 ZFCP_REQ_AUTO_CLEANUP, pool);
1069 if (IS_ERR(req)) {
1070 ret = PTR_ERR(req);
1071 goto out;
1072 }
1073
1074 ret = zfcp_fsf_setup_ct_els_sbals(req, ct->req, ct->resp,
1075 FSF_MAX_SBALS_PER_REQ);
1076 if (ret)
1077 goto failed_send;
1078
1079 req->handler = zfcp_fsf_send_ct_handler;
1080 req->qtcb->header.port_handle = wka_port->handle;
1081 req->qtcb->bottom.support.service_class = FSF_CLASS_3;
1082 req->qtcb->bottom.support.timeout = ct->timeout;
1083 req->data = ct;
1084
1085 zfcp_san_dbf_event_ct_request(req);
1086
1087 if (erp_action) {
1088 erp_action->fsf_req = req;
1089 req->erp_action = erp_action;
1090 zfcp_fsf_start_erp_timer(req);
1091 } else
1092 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1093
1094 ret = zfcp_fsf_req_send(req);
1095 if (ret)
1096 goto failed_send;
1097
1098 goto out;
1099
1100failed_send:
1101 zfcp_fsf_req_free(req);
1102 if (erp_action)
1103 erp_action->fsf_req = NULL;
1104out:
1105 spin_unlock_bh(&adapter->req_q_lock);
1106 return ret;
1107}
1108
1109static void zfcp_fsf_send_els_handler(struct zfcp_fsf_req *req)
1110{
1111 struct zfcp_send_els *send_els = req->data;
1112 struct zfcp_port *port = send_els->port;
1113 struct fsf_qtcb_header *header = &req->qtcb->header;
1114
1115 send_els->status = -EINVAL;
1116
1117 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1118 goto skip_fsfstatus;
1119
1120 switch (header->fsf_status) {
1121 case FSF_GOOD:
1122 zfcp_san_dbf_event_els_response(req);
1123 send_els->status = 0;
1124 break;
1125 case FSF_SERVICE_CLASS_NOT_SUPPORTED:
1126 zfcp_fsf_class_not_supp(req);
1127 break;
1128 case FSF_ADAPTER_STATUS_AVAILABLE:
1129 switch (header->fsf_status_qual.word[0]){
1130 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1131 if (port && (send_els->ls_code != ZFCP_LS_ADISC))
1132 zfcp_test_link(port);
1133
1134 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1135 case FSF_SQ_RETRY_IF_POSSIBLE:
1136 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1137 break;
1138 }
1139 break;
1140 case FSF_ELS_COMMAND_REJECTED:
1141 case FSF_PAYLOAD_SIZE_MISMATCH:
1142 case FSF_REQUEST_SIZE_TOO_LARGE:
1143 case FSF_RESPONSE_SIZE_TOO_LARGE:
1144 break;
1145 case FSF_ACCESS_DENIED:
1146 zfcp_fsf_access_denied_port(req, port);
1147 break;
1148 case FSF_SBAL_MISMATCH:
1149
1150
1151 default:
1152 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1153 break;
1154 }
1155skip_fsfstatus:
1156 if (send_els->handler)
1157 send_els->handler(send_els->handler_data);
1158}
1159
1160
1161
1162
1163
1164int zfcp_fsf_send_els(struct zfcp_send_els *els)
1165{
1166 struct zfcp_fsf_req *req;
1167 struct zfcp_adapter *adapter = els->adapter;
1168 struct fsf_qtcb_bottom_support *bottom;
1169 int ret = -EIO;
1170
1171 spin_lock_bh(&adapter->req_q_lock);
1172 if (zfcp_fsf_req_sbal_get(adapter))
1173 goto out;
1174 req = zfcp_fsf_req_create(adapter, FSF_QTCB_SEND_ELS,
1175 ZFCP_REQ_AUTO_CLEANUP, NULL);
1176 if (IS_ERR(req)) {
1177 ret = PTR_ERR(req);
1178 goto out;
1179 }
1180
1181 ret = zfcp_fsf_setup_ct_els_sbals(req, els->req, els->resp, 2);
1182
1183 if (ret)
1184 goto failed_send;
1185
1186 bottom = &req->qtcb->bottom.support;
1187 req->handler = zfcp_fsf_send_els_handler;
1188 bottom->d_id = els->d_id;
1189 bottom->service_class = FSF_CLASS_3;
1190 bottom->timeout = 2 * R_A_TOV;
1191 req->data = els;
1192
1193 zfcp_san_dbf_event_els_request(req);
1194
1195 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1196 ret = zfcp_fsf_req_send(req);
1197 if (ret)
1198 goto failed_send;
1199
1200 goto out;
1201
1202failed_send:
1203 zfcp_fsf_req_free(req);
1204out:
1205 spin_unlock_bh(&adapter->req_q_lock);
1206 return ret;
1207}
1208
1209int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action)
1210{
1211 struct qdio_buffer_element *sbale;
1212 struct zfcp_fsf_req *req;
1213 struct zfcp_adapter *adapter = erp_action->adapter;
1214 int retval = -EIO;
1215
1216 spin_lock_bh(&adapter->req_q_lock);
1217 if (zfcp_fsf_req_sbal_get(adapter))
1218 goto out;
1219 req = zfcp_fsf_req_create(adapter,
1220 FSF_QTCB_EXCHANGE_CONFIG_DATA,
1221 ZFCP_REQ_AUTO_CLEANUP,
1222 adapter->pool.fsf_req_erp);
1223 if (IS_ERR(req)) {
1224 retval = PTR_ERR(req);
1225 goto out;
1226 }
1227
1228 sbale = zfcp_qdio_sbale_req(req);
1229 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
1230 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
1231
1232 req->qtcb->bottom.config.feature_selection =
1233 FSF_FEATURE_CFDC |
1234 FSF_FEATURE_LUN_SHARING |
1235 FSF_FEATURE_NOTIFICATION_LOST |
1236 FSF_FEATURE_UPDATE_ALERT;
1237 req->erp_action = erp_action;
1238 req->handler = zfcp_fsf_exchange_config_data_handler;
1239 erp_action->fsf_req = req;
1240
1241 zfcp_fsf_start_erp_timer(req);
1242 retval = zfcp_fsf_req_send(req);
1243 if (retval) {
1244 zfcp_fsf_req_free(req);
1245 erp_action->fsf_req = NULL;
1246 }
1247out:
1248 spin_unlock_bh(&adapter->req_q_lock);
1249 return retval;
1250}
1251
1252int zfcp_fsf_exchange_config_data_sync(struct zfcp_adapter *adapter,
1253 struct fsf_qtcb_bottom_config *data)
1254{
1255 struct qdio_buffer_element *sbale;
1256 struct zfcp_fsf_req *req = NULL;
1257 int retval = -EIO;
1258
1259 spin_lock_bh(&adapter->req_q_lock);
1260 if (zfcp_fsf_req_sbal_get(adapter))
1261 goto out_unlock;
1262
1263 req = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_CONFIG_DATA,
1264 0, NULL);
1265 if (IS_ERR(req)) {
1266 retval = PTR_ERR(req);
1267 goto out_unlock;
1268 }
1269
1270 sbale = zfcp_qdio_sbale_req(req);
1271 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
1272 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
1273 req->handler = zfcp_fsf_exchange_config_data_handler;
1274
1275 req->qtcb->bottom.config.feature_selection =
1276 FSF_FEATURE_CFDC |
1277 FSF_FEATURE_LUN_SHARING |
1278 FSF_FEATURE_NOTIFICATION_LOST |
1279 FSF_FEATURE_UPDATE_ALERT;
1280
1281 if (data)
1282 req->data = data;
1283
1284 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1285 retval = zfcp_fsf_req_send(req);
1286 spin_unlock_bh(&adapter->req_q_lock);
1287 if (!retval)
1288 wait_event(req->completion_wq,
1289 req->status & ZFCP_STATUS_FSFREQ_COMPLETED);
1290
1291 zfcp_fsf_req_free(req);
1292 return retval;
1293
1294out_unlock:
1295 spin_unlock_bh(&adapter->req_q_lock);
1296 return retval;
1297}
1298
1299
1300
1301
1302
1303
1304int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action)
1305{
1306 struct qdio_buffer_element *sbale;
1307 struct zfcp_fsf_req *req;
1308 struct zfcp_adapter *adapter = erp_action->adapter;
1309 int retval = -EIO;
1310
1311 if (!(adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT))
1312 return -EOPNOTSUPP;
1313
1314 spin_lock_bh(&adapter->req_q_lock);
1315 if (zfcp_fsf_req_sbal_get(adapter))
1316 goto out;
1317 req = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_PORT_DATA,
1318 ZFCP_REQ_AUTO_CLEANUP,
1319 adapter->pool.fsf_req_erp);
1320 if (IS_ERR(req)) {
1321 retval = PTR_ERR(req);
1322 goto out;
1323 }
1324
1325 sbale = zfcp_qdio_sbale_req(req);
1326 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
1327 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
1328
1329 req->handler = zfcp_fsf_exchange_port_data_handler;
1330 req->erp_action = erp_action;
1331 erp_action->fsf_req = req;
1332
1333 zfcp_fsf_start_erp_timer(req);
1334 retval = zfcp_fsf_req_send(req);
1335 if (retval) {
1336 zfcp_fsf_req_free(req);
1337 erp_action->fsf_req = NULL;
1338 }
1339out:
1340 spin_unlock_bh(&adapter->req_q_lock);
1341 return retval;
1342}
1343
1344
1345
1346
1347
1348
1349
1350int zfcp_fsf_exchange_port_data_sync(struct zfcp_adapter *adapter,
1351 struct fsf_qtcb_bottom_port *data)
1352{
1353 struct qdio_buffer_element *sbale;
1354 struct zfcp_fsf_req *req = NULL;
1355 int retval = -EIO;
1356
1357 if (!(adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT))
1358 return -EOPNOTSUPP;
1359
1360 spin_lock_bh(&adapter->req_q_lock);
1361 if (zfcp_fsf_req_sbal_get(adapter))
1362 goto out_unlock;
1363
1364 req = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_PORT_DATA, 0,
1365 NULL);
1366 if (IS_ERR(req)) {
1367 retval = PTR_ERR(req);
1368 goto out_unlock;
1369 }
1370
1371 if (data)
1372 req->data = data;
1373
1374 sbale = zfcp_qdio_sbale_req(req);
1375 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
1376 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
1377
1378 req->handler = zfcp_fsf_exchange_port_data_handler;
1379 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1380 retval = zfcp_fsf_req_send(req);
1381 spin_unlock_bh(&adapter->req_q_lock);
1382
1383 if (!retval)
1384 wait_event(req->completion_wq,
1385 req->status & ZFCP_STATUS_FSFREQ_COMPLETED);
1386 zfcp_fsf_req_free(req);
1387
1388 return retval;
1389
1390out_unlock:
1391 spin_unlock_bh(&adapter->req_q_lock);
1392 return retval;
1393}
1394
1395static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req *req)
1396{
1397 struct zfcp_port *port = req->data;
1398 struct fsf_qtcb_header *header = &req->qtcb->header;
1399 struct fsf_plogi *plogi;
1400
1401 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1402 return;
1403
1404 switch (header->fsf_status) {
1405 case FSF_PORT_ALREADY_OPEN:
1406 break;
1407 case FSF_ACCESS_DENIED:
1408 zfcp_fsf_access_denied_port(req, port);
1409 break;
1410 case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED:
1411 dev_warn(&req->adapter->ccw_device->dev,
1412 "Not enough FCP adapter resources to open "
1413 "remote port 0x%016Lx\n",
1414 (unsigned long long)port->wwpn);
1415 zfcp_erp_port_failed(port, "fsoph_1", req);
1416 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1417 break;
1418 case FSF_ADAPTER_STATUS_AVAILABLE:
1419 switch (header->fsf_status_qual.word[0]) {
1420 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1421 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1422 case FSF_SQ_NO_RETRY_POSSIBLE:
1423 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1424 break;
1425 }
1426 break;
1427 case FSF_GOOD:
1428 port->handle = header->port_handle;
1429 atomic_set_mask(ZFCP_STATUS_COMMON_OPEN |
1430 ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
1431 atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED |
1432 ZFCP_STATUS_COMMON_ACCESS_BOXED,
1433 &port->status);
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449 plogi = (struct fsf_plogi *) req->qtcb->bottom.support.els;
1450 if (req->qtcb->bottom.support.els1_length >=
1451 FSF_PLOGI_MIN_LEN) {
1452 if (plogi->serv_param.wwpn != port->wwpn)
1453 port->d_id = 0;
1454 else {
1455 port->wwnn = plogi->serv_param.wwnn;
1456 zfcp_fc_plogi_evaluate(port, plogi);
1457 }
1458 }
1459 break;
1460 case FSF_UNKNOWN_OP_SUBTYPE:
1461 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1462 break;
1463 }
1464}
1465
1466
1467
1468
1469
1470
1471int zfcp_fsf_open_port(struct zfcp_erp_action *erp_action)
1472{
1473 struct qdio_buffer_element *sbale;
1474 struct zfcp_adapter *adapter = erp_action->adapter;
1475 struct zfcp_fsf_req *req;
1476 int retval = -EIO;
1477
1478 spin_lock_bh(&adapter->req_q_lock);
1479 if (zfcp_fsf_req_sbal_get(adapter))
1480 goto out;
1481
1482 req = zfcp_fsf_req_create(adapter,
1483 FSF_QTCB_OPEN_PORT_WITH_DID,
1484 ZFCP_REQ_AUTO_CLEANUP,
1485 adapter->pool.fsf_req_erp);
1486 if (IS_ERR(req)) {
1487 retval = PTR_ERR(req);
1488 goto out;
1489 }
1490
1491 sbale = zfcp_qdio_sbale_req(req);
1492 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
1493 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
1494
1495 req->handler = zfcp_fsf_open_port_handler;
1496 req->qtcb->bottom.support.d_id = erp_action->port->d_id;
1497 req->data = erp_action->port;
1498 req->erp_action = erp_action;
1499 erp_action->fsf_req = req;
1500
1501 zfcp_fsf_start_erp_timer(req);
1502 retval = zfcp_fsf_req_send(req);
1503 if (retval) {
1504 zfcp_fsf_req_free(req);
1505 erp_action->fsf_req = NULL;
1506 }
1507out:
1508 spin_unlock_bh(&adapter->req_q_lock);
1509 return retval;
1510}
1511
1512static void zfcp_fsf_close_port_handler(struct zfcp_fsf_req *req)
1513{
1514 struct zfcp_port *port = req->data;
1515
1516 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1517 return;
1518
1519 switch (req->qtcb->header.fsf_status) {
1520 case FSF_PORT_HANDLE_NOT_VALID:
1521 zfcp_erp_adapter_reopen(port->adapter, 0, "fscph_1", req);
1522 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1523 break;
1524 case FSF_ADAPTER_STATUS_AVAILABLE:
1525 break;
1526 case FSF_GOOD:
1527 zfcp_erp_modify_port_status(port, "fscph_2", req,
1528 ZFCP_STATUS_COMMON_OPEN,
1529 ZFCP_CLEAR);
1530 break;
1531 }
1532}
1533
1534
1535
1536
1537
1538
1539int zfcp_fsf_close_port(struct zfcp_erp_action *erp_action)
1540{
1541 struct qdio_buffer_element *sbale;
1542 struct zfcp_adapter *adapter = erp_action->adapter;
1543 struct zfcp_fsf_req *req;
1544 int retval = -EIO;
1545
1546 spin_lock_bh(&adapter->req_q_lock);
1547 if (zfcp_fsf_req_sbal_get(adapter))
1548 goto out;
1549
1550 req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_PORT,
1551 ZFCP_REQ_AUTO_CLEANUP,
1552 adapter->pool.fsf_req_erp);
1553 if (IS_ERR(req)) {
1554 retval = PTR_ERR(req);
1555 goto out;
1556 }
1557
1558 sbale = zfcp_qdio_sbale_req(req);
1559 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
1560 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
1561
1562 req->handler = zfcp_fsf_close_port_handler;
1563 req->data = erp_action->port;
1564 req->erp_action = erp_action;
1565 req->qtcb->header.port_handle = erp_action->port->handle;
1566 erp_action->fsf_req = req;
1567
1568 zfcp_fsf_start_erp_timer(req);
1569 retval = zfcp_fsf_req_send(req);
1570 if (retval) {
1571 zfcp_fsf_req_free(req);
1572 erp_action->fsf_req = NULL;
1573 }
1574out:
1575 spin_unlock_bh(&adapter->req_q_lock);
1576 return retval;
1577}
1578
1579static void zfcp_fsf_open_wka_port_handler(struct zfcp_fsf_req *req)
1580{
1581 struct zfcp_wka_port *wka_port = req->data;
1582 struct fsf_qtcb_header *header = &req->qtcb->header;
1583
1584 if (req->status & ZFCP_STATUS_FSFREQ_ERROR) {
1585 wka_port->status = ZFCP_WKA_PORT_OFFLINE;
1586 goto out;
1587 }
1588
1589 switch (header->fsf_status) {
1590 case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED:
1591 dev_warn(&req->adapter->ccw_device->dev,
1592 "Opening WKA port 0x%x failed\n", wka_port->d_id);
1593 case FSF_ADAPTER_STATUS_AVAILABLE:
1594 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1595 case FSF_ACCESS_DENIED:
1596 wka_port->status = ZFCP_WKA_PORT_OFFLINE;
1597 break;
1598 case FSF_PORT_ALREADY_OPEN:
1599 break;
1600 case FSF_GOOD:
1601 wka_port->handle = header->port_handle;
1602 wka_port->status = ZFCP_WKA_PORT_ONLINE;
1603 }
1604out:
1605 wake_up(&wka_port->completion_wq);
1606}
1607
1608
1609
1610
1611
1612
1613int zfcp_fsf_open_wka_port(struct zfcp_wka_port *wka_port)
1614{
1615 struct qdio_buffer_element *sbale;
1616 struct zfcp_adapter *adapter = wka_port->adapter;
1617 struct zfcp_fsf_req *req;
1618 int retval = -EIO;
1619
1620 spin_lock_bh(&adapter->req_q_lock);
1621 if (zfcp_fsf_req_sbal_get(adapter))
1622 goto out;
1623
1624 req = zfcp_fsf_req_create(adapter,
1625 FSF_QTCB_OPEN_PORT_WITH_DID,
1626 ZFCP_REQ_AUTO_CLEANUP,
1627 adapter->pool.fsf_req_erp);
1628 if (unlikely(IS_ERR(req))) {
1629 retval = PTR_ERR(req);
1630 goto out;
1631 }
1632
1633 sbale = zfcp_qdio_sbale_req(req);
1634 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
1635 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
1636
1637 req->handler = zfcp_fsf_open_wka_port_handler;
1638 req->qtcb->bottom.support.d_id = wka_port->d_id;
1639 req->data = wka_port;
1640
1641 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1642 retval = zfcp_fsf_req_send(req);
1643 if (retval)
1644 zfcp_fsf_req_free(req);
1645out:
1646 spin_unlock_bh(&adapter->req_q_lock);
1647 return retval;
1648}
1649
1650static void zfcp_fsf_close_wka_port_handler(struct zfcp_fsf_req *req)
1651{
1652 struct zfcp_wka_port *wka_port = req->data;
1653
1654 if (req->qtcb->header.fsf_status == FSF_PORT_HANDLE_NOT_VALID) {
1655 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1656 zfcp_erp_adapter_reopen(wka_port->adapter, 0, "fscwph1", req);
1657 }
1658
1659 wka_port->status = ZFCP_WKA_PORT_OFFLINE;
1660 wake_up(&wka_port->completion_wq);
1661}
1662
1663
1664
1665
1666
1667
1668int zfcp_fsf_close_wka_port(struct zfcp_wka_port *wka_port)
1669{
1670 struct qdio_buffer_element *sbale;
1671 struct zfcp_adapter *adapter = wka_port->adapter;
1672 struct zfcp_fsf_req *req;
1673 int retval = -EIO;
1674
1675 spin_lock_bh(&adapter->req_q_lock);
1676 if (zfcp_fsf_req_sbal_get(adapter))
1677 goto out;
1678
1679 req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_PORT,
1680 ZFCP_REQ_AUTO_CLEANUP,
1681 adapter->pool.fsf_req_erp);
1682 if (unlikely(IS_ERR(req))) {
1683 retval = PTR_ERR(req);
1684 goto out;
1685 }
1686
1687 sbale = zfcp_qdio_sbale_req(req);
1688 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
1689 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
1690
1691 req->handler = zfcp_fsf_close_wka_port_handler;
1692 req->data = wka_port;
1693 req->qtcb->header.port_handle = wka_port->handle;
1694
1695 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1696 retval = zfcp_fsf_req_send(req);
1697 if (retval)
1698 zfcp_fsf_req_free(req);
1699out:
1700 spin_unlock_bh(&adapter->req_q_lock);
1701 return retval;
1702}
1703
1704static void zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *req)
1705{
1706 struct zfcp_port *port = req->data;
1707 struct fsf_qtcb_header *header = &req->qtcb->header;
1708 struct zfcp_unit *unit;
1709
1710 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1711 return;
1712
1713 switch (header->fsf_status) {
1714 case FSF_PORT_HANDLE_NOT_VALID:
1715 zfcp_erp_adapter_reopen(port->adapter, 0, "fscpph1", req);
1716 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1717 break;
1718 case FSF_ACCESS_DENIED:
1719 zfcp_fsf_access_denied_port(req, port);
1720 break;
1721 case FSF_PORT_BOXED:
1722 zfcp_erp_port_boxed(port, "fscpph2", req);
1723 req->status |= ZFCP_STATUS_FSFREQ_ERROR |
1724 ZFCP_STATUS_FSFREQ_RETRY;
1725
1726
1727 atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
1728 list_for_each_entry(unit, &port->unit_list_head, list)
1729 atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN,
1730 &unit->status);
1731 break;
1732 case FSF_ADAPTER_STATUS_AVAILABLE:
1733 switch (header->fsf_status_qual.word[0]) {
1734 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1735
1736 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1737 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1738 break;
1739 }
1740 break;
1741 case FSF_GOOD:
1742
1743
1744
1745 atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
1746 list_for_each_entry(unit, &port->unit_list_head, list)
1747 atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN,
1748 &unit->status);
1749 break;
1750 }
1751}
1752
1753
1754
1755
1756
1757
1758int zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action)
1759{
1760 struct qdio_buffer_element *sbale;
1761 struct zfcp_adapter *adapter = erp_action->adapter;
1762 struct zfcp_fsf_req *req;
1763 int retval = -EIO;
1764
1765 spin_lock_bh(&adapter->req_q_lock);
1766 if (zfcp_fsf_req_sbal_get(adapter))
1767 goto out;
1768
1769 req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_PHYSICAL_PORT,
1770 ZFCP_REQ_AUTO_CLEANUP,
1771 adapter->pool.fsf_req_erp);
1772 if (IS_ERR(req)) {
1773 retval = PTR_ERR(req);
1774 goto out;
1775 }
1776
1777 sbale = zfcp_qdio_sbale_req(req);
1778 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
1779 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
1780
1781 req->data = erp_action->port;
1782 req->qtcb->header.port_handle = erp_action->port->handle;
1783 req->erp_action = erp_action;
1784 req->handler = zfcp_fsf_close_physical_port_handler;
1785 erp_action->fsf_req = req;
1786
1787 zfcp_fsf_start_erp_timer(req);
1788 retval = zfcp_fsf_req_send(req);
1789 if (retval) {
1790 zfcp_fsf_req_free(req);
1791 erp_action->fsf_req = NULL;
1792 }
1793out:
1794 spin_unlock_bh(&adapter->req_q_lock);
1795 return retval;
1796}
1797
1798static void zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *req)
1799{
1800 struct zfcp_adapter *adapter = req->adapter;
1801 struct zfcp_unit *unit = req->data;
1802 struct fsf_qtcb_header *header = &req->qtcb->header;
1803 struct fsf_qtcb_bottom_support *bottom = &req->qtcb->bottom.support;
1804 struct fsf_queue_designator *queue_designator =
1805 &header->fsf_status_qual.fsf_queue_designator;
1806 int exclusive, readwrite;
1807
1808 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1809 return;
1810
1811 atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED |
1812 ZFCP_STATUS_COMMON_ACCESS_BOXED |
1813 ZFCP_STATUS_UNIT_SHARED |
1814 ZFCP_STATUS_UNIT_READONLY,
1815 &unit->status);
1816
1817 switch (header->fsf_status) {
1818
1819 case FSF_PORT_HANDLE_NOT_VALID:
1820 zfcp_erp_adapter_reopen(unit->port->adapter, 0, "fsouh_1", req);
1821
1822 case FSF_LUN_ALREADY_OPEN:
1823 break;
1824 case FSF_ACCESS_DENIED:
1825 zfcp_fsf_access_denied_unit(req, unit);
1826 atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED, &unit->status);
1827 atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status);
1828 break;
1829 case FSF_PORT_BOXED:
1830 zfcp_erp_port_boxed(unit->port, "fsouh_2", req);
1831 req->status |= ZFCP_STATUS_FSFREQ_ERROR |
1832 ZFCP_STATUS_FSFREQ_RETRY;
1833 break;
1834 case FSF_LUN_SHARING_VIOLATION:
1835 if (header->fsf_status_qual.word[0])
1836 dev_warn(&adapter->ccw_device->dev,
1837 "LUN 0x%Lx on port 0x%Lx is already in "
1838 "use by CSS%d, MIF Image ID %x\n",
1839 (unsigned long long)unit->fcp_lun,
1840 (unsigned long long)unit->port->wwpn,
1841 queue_designator->cssid,
1842 queue_designator->hla);
1843 else
1844 zfcp_act_eval_err(adapter,
1845 header->fsf_status_qual.word[2]);
1846 zfcp_erp_unit_access_denied(unit, "fsouh_3", req);
1847 atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED, &unit->status);
1848 atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status);
1849 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1850 break;
1851 case FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED:
1852 dev_warn(&adapter->ccw_device->dev,
1853 "No handle is available for LUN "
1854 "0x%016Lx on port 0x%016Lx\n",
1855 (unsigned long long)unit->fcp_lun,
1856 (unsigned long long)unit->port->wwpn);
1857 zfcp_erp_unit_failed(unit, "fsouh_4", req);
1858
1859 case FSF_INVALID_COMMAND_OPTION:
1860 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1861 break;
1862 case FSF_ADAPTER_STATUS_AVAILABLE:
1863 switch (header->fsf_status_qual.word[0]) {
1864 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1865 zfcp_test_link(unit->port);
1866
1867 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1868 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1869 break;
1870 }
1871 break;
1872
1873 case FSF_GOOD:
1874 unit->handle = header->lun_handle;
1875 atomic_set_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status);
1876
1877 if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE) &&
1878 (adapter->adapter_features & FSF_FEATURE_LUN_SHARING) &&
1879 (adapter->ccw_device->id.dev_model != ZFCP_DEVICE_MODEL_PRIV)) {
1880 exclusive = (bottom->lun_access_info &
1881 FSF_UNIT_ACCESS_EXCLUSIVE);
1882 readwrite = (bottom->lun_access_info &
1883 FSF_UNIT_ACCESS_OUTBOUND_TRANSFER);
1884
1885 if (!exclusive)
1886 atomic_set_mask(ZFCP_STATUS_UNIT_SHARED,
1887 &unit->status);
1888
1889 if (!readwrite) {
1890 atomic_set_mask(ZFCP_STATUS_UNIT_READONLY,
1891 &unit->status);
1892 dev_info(&adapter->ccw_device->dev,
1893 "SCSI device at LUN 0x%016Lx on port "
1894 "0x%016Lx opened read-only\n",
1895 (unsigned long long)unit->fcp_lun,
1896 (unsigned long long)unit->port->wwpn);
1897 }
1898
1899 if (exclusive && !readwrite) {
1900 dev_err(&adapter->ccw_device->dev,
1901 "Exclusive read-only access not "
1902 "supported (unit 0x%016Lx, "
1903 "port 0x%016Lx)\n",
1904 (unsigned long long)unit->fcp_lun,
1905 (unsigned long long)unit->port->wwpn);
1906 zfcp_erp_unit_failed(unit, "fsouh_5", req);
1907 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1908 zfcp_erp_unit_shutdown(unit, 0, "fsouh_6", req);
1909 } else if (!exclusive && readwrite) {
1910 dev_err(&adapter->ccw_device->dev,
1911 "Shared read-write access not "
1912 "supported (unit 0x%016Lx, port "
1913 "0x%016Lx)\n",
1914 (unsigned long long)unit->fcp_lun,
1915 (unsigned long long)unit->port->wwpn);
1916 zfcp_erp_unit_failed(unit, "fsouh_7", req);
1917 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1918 zfcp_erp_unit_shutdown(unit, 0, "fsouh_8", req);
1919 }
1920 }
1921 break;
1922 }
1923}
1924
1925
1926
1927
1928
1929
1930int zfcp_fsf_open_unit(struct zfcp_erp_action *erp_action)
1931{
1932 struct qdio_buffer_element *sbale;
1933 struct zfcp_adapter *adapter = erp_action->adapter;
1934 struct zfcp_fsf_req *req;
1935 int retval = -EIO;
1936
1937 spin_lock_bh(&adapter->req_q_lock);
1938 if (zfcp_fsf_req_sbal_get(adapter))
1939 goto out;
1940
1941 req = zfcp_fsf_req_create(adapter, FSF_QTCB_OPEN_LUN,
1942 ZFCP_REQ_AUTO_CLEANUP,
1943 adapter->pool.fsf_req_erp);
1944 if (IS_ERR(req)) {
1945 retval = PTR_ERR(req);
1946 goto out;
1947 }
1948
1949 sbale = zfcp_qdio_sbale_req(req);
1950 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
1951 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
1952
1953 req->qtcb->header.port_handle = erp_action->port->handle;
1954 req->qtcb->bottom.support.fcp_lun = erp_action->unit->fcp_lun;
1955 req->handler = zfcp_fsf_open_unit_handler;
1956 req->data = erp_action->unit;
1957 req->erp_action = erp_action;
1958 erp_action->fsf_req = req;
1959
1960 if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE))
1961 req->qtcb->bottom.support.option = FSF_OPEN_LUN_SUPPRESS_BOXING;
1962
1963 zfcp_fsf_start_erp_timer(req);
1964 retval = zfcp_fsf_req_send(req);
1965 if (retval) {
1966 zfcp_fsf_req_free(req);
1967 erp_action->fsf_req = NULL;
1968 }
1969out:
1970 spin_unlock_bh(&adapter->req_q_lock);
1971 return retval;
1972}
1973
1974static void zfcp_fsf_close_unit_handler(struct zfcp_fsf_req *req)
1975{
1976 struct zfcp_unit *unit = req->data;
1977
1978 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1979 return;
1980
1981 switch (req->qtcb->header.fsf_status) {
1982 case FSF_PORT_HANDLE_NOT_VALID:
1983 zfcp_erp_adapter_reopen(unit->port->adapter, 0, "fscuh_1", req);
1984 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1985 break;
1986 case FSF_LUN_HANDLE_NOT_VALID:
1987 zfcp_erp_port_reopen(unit->port, 0, "fscuh_2", req);
1988 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1989 break;
1990 case FSF_PORT_BOXED:
1991 zfcp_erp_port_boxed(unit->port, "fscuh_3", req);
1992 req->status |= ZFCP_STATUS_FSFREQ_ERROR |
1993 ZFCP_STATUS_FSFREQ_RETRY;
1994 break;
1995 case FSF_ADAPTER_STATUS_AVAILABLE:
1996 switch (req->qtcb->header.fsf_status_qual.word[0]) {
1997 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1998 zfcp_test_link(unit->port);
1999
2000 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
2001 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2002 break;
2003 }
2004 break;
2005 case FSF_GOOD:
2006 atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status);
2007 break;
2008 }
2009}
2010
2011
2012
2013
2014
2015
2016int zfcp_fsf_close_unit(struct zfcp_erp_action *erp_action)
2017{
2018 struct qdio_buffer_element *sbale;
2019 struct zfcp_adapter *adapter = erp_action->adapter;
2020 struct zfcp_fsf_req *req;
2021 int retval = -EIO;
2022
2023 spin_lock_bh(&adapter->req_q_lock);
2024 if (zfcp_fsf_req_sbal_get(adapter))
2025 goto out;
2026 req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_LUN,
2027 ZFCP_REQ_AUTO_CLEANUP,
2028 adapter->pool.fsf_req_erp);
2029 if (IS_ERR(req)) {
2030 retval = PTR_ERR(req);
2031 goto out;
2032 }
2033
2034 sbale = zfcp_qdio_sbale_req(req);
2035 sbale[0].flags |= SBAL_FLAGS0_TYPE_READ;
2036 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
2037
2038 req->qtcb->header.port_handle = erp_action->port->handle;
2039 req->qtcb->header.lun_handle = erp_action->unit->handle;
2040 req->handler = zfcp_fsf_close_unit_handler;
2041 req->data = erp_action->unit;
2042 req->erp_action = erp_action;
2043 erp_action->fsf_req = req;
2044
2045 zfcp_fsf_start_erp_timer(req);
2046 retval = zfcp_fsf_req_send(req);
2047 if (retval) {
2048 zfcp_fsf_req_free(req);
2049 erp_action->fsf_req = NULL;
2050 }
2051out:
2052 spin_unlock_bh(&adapter->req_q_lock);
2053 return retval;
2054}
2055
2056static void zfcp_fsf_update_lat(struct fsf_latency_record *lat_rec, u32 lat)
2057{
2058 lat_rec->sum += lat;
2059 lat_rec->min = min(lat_rec->min, lat);
2060 lat_rec->max = max(lat_rec->max, lat);
2061}
2062
2063static void zfcp_fsf_req_latency(struct zfcp_fsf_req *req)
2064{
2065 struct fsf_qual_latency_info *lat_inf;
2066 struct latency_cont *lat;
2067 struct zfcp_unit *unit = req->unit;
2068
2069 lat_inf = &req->qtcb->prefix.prot_status_qual.latency_info;
2070
2071 switch (req->qtcb->bottom.io.data_direction) {
2072 case FSF_DATADIR_READ:
2073 lat = &unit->latencies.read;
2074 break;
2075 case FSF_DATADIR_WRITE:
2076 lat = &unit->latencies.write;
2077 break;
2078 case FSF_DATADIR_CMND:
2079 lat = &unit->latencies.cmd;
2080 break;
2081 default:
2082 return;
2083 }
2084
2085 spin_lock(&unit->latencies.lock);
2086 zfcp_fsf_update_lat(&lat->channel, lat_inf->channel_lat);
2087 zfcp_fsf_update_lat(&lat->fabric, lat_inf->fabric_lat);
2088 lat->counter++;
2089 spin_unlock(&unit->latencies.lock);
2090}
2091
2092#ifdef CONFIG_BLK_DEV_IO_TRACE
2093static void zfcp_fsf_trace_latency(struct zfcp_fsf_req *fsf_req)
2094{
2095 struct fsf_qual_latency_info *lat_inf;
2096 struct scsi_cmnd *scsi_cmnd = (struct scsi_cmnd *)fsf_req->data;
2097 struct request *req = scsi_cmnd->request;
2098 struct zfcp_blk_drv_data trace;
2099 int ticks = fsf_req->adapter->timer_ticks;
2100
2101 trace.flags = 0;
2102 trace.magic = ZFCP_BLK_DRV_DATA_MAGIC;
2103 if (fsf_req->adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA) {
2104 trace.flags |= ZFCP_BLK_LAT_VALID;
2105 lat_inf = &fsf_req->qtcb->prefix.prot_status_qual.latency_info;
2106 trace.channel_lat = lat_inf->channel_lat * ticks;
2107 trace.fabric_lat = lat_inf->fabric_lat * ticks;
2108 }
2109 if (fsf_req->status & ZFCP_STATUS_FSFREQ_ERROR)
2110 trace.flags |= ZFCP_BLK_REQ_ERROR;
2111 trace.inb_usage = fsf_req->qdio_inb_usage;
2112 trace.outb_usage = fsf_req->qdio_outb_usage;
2113
2114 blk_add_driver_data(req->q, req, &trace, sizeof(trace));
2115}
2116#else
2117static inline void zfcp_fsf_trace_latency(struct zfcp_fsf_req *fsf_req)
2118{
2119}
2120#endif
2121
2122static void zfcp_fsf_send_fcp_command_task_handler(struct zfcp_fsf_req *req)
2123{
2124 struct scsi_cmnd *scpnt;
2125 struct fcp_rsp_iu *fcp_rsp_iu = (struct fcp_rsp_iu *)
2126 &(req->qtcb->bottom.io.fcp_rsp);
2127 u32 sns_len;
2128 char *fcp_rsp_info = (unsigned char *) &fcp_rsp_iu[1];
2129 unsigned long flags;
2130
2131 read_lock_irqsave(&req->adapter->abort_lock, flags);
2132
2133 scpnt = req->data;
2134 if (unlikely(!scpnt)) {
2135 read_unlock_irqrestore(&req->adapter->abort_lock, flags);
2136 return;
2137 }
2138
2139 if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ABORTED)) {
2140 set_host_byte(scpnt, DID_SOFT_ERROR);
2141 goto skip_fsfstatus;
2142 }
2143
2144 if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) {
2145 set_host_byte(scpnt, DID_ERROR);
2146 goto skip_fsfstatus;
2147 }
2148
2149 set_msg_byte(scpnt, COMMAND_COMPLETE);
2150
2151 scpnt->result |= fcp_rsp_iu->scsi_status;
2152
2153 if (req->adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA)
2154 zfcp_fsf_req_latency(req);
2155
2156 zfcp_fsf_trace_latency(req);
2157
2158 if (unlikely(fcp_rsp_iu->validity.bits.fcp_rsp_len_valid)) {
2159 if (fcp_rsp_info[3] == RSP_CODE_GOOD)
2160 set_host_byte(scpnt, DID_OK);
2161 else {
2162 set_host_byte(scpnt, DID_ERROR);
2163 goto skip_fsfstatus;
2164 }
2165 }
2166
2167 if (unlikely(fcp_rsp_iu->validity.bits.fcp_sns_len_valid)) {
2168 sns_len = FSF_FCP_RSP_SIZE - sizeof(struct fcp_rsp_iu) +
2169 fcp_rsp_iu->fcp_rsp_len;
2170 sns_len = min(sns_len, (u32) SCSI_SENSE_BUFFERSIZE);
2171 sns_len = min(sns_len, fcp_rsp_iu->fcp_sns_len);
2172
2173 memcpy(scpnt->sense_buffer,
2174 zfcp_get_fcp_sns_info_ptr(fcp_rsp_iu), sns_len);
2175 }
2176
2177 if (unlikely(fcp_rsp_iu->validity.bits.fcp_resid_under)) {
2178 scsi_set_resid(scpnt, fcp_rsp_iu->fcp_resid);
2179 if (scsi_bufflen(scpnt) - scsi_get_resid(scpnt) <
2180 scpnt->underflow)
2181 set_host_byte(scpnt, DID_ERROR);
2182 }
2183skip_fsfstatus:
2184 if (scpnt->result != 0)
2185 zfcp_scsi_dbf_event_result("erro", 3, req->adapter, scpnt, req);
2186 else if (scpnt->retries > 0)
2187 zfcp_scsi_dbf_event_result("retr", 4, req->adapter, scpnt, req);
2188 else
2189 zfcp_scsi_dbf_event_result("norm", 6, req->adapter, scpnt, req);
2190
2191 scpnt->host_scribble = NULL;
2192 (scpnt->scsi_done) (scpnt);
2193
2194
2195
2196
2197
2198
2199 read_unlock_irqrestore(&req->adapter->abort_lock, flags);
2200}
2201
2202static void zfcp_fsf_send_fcp_ctm_handler(struct zfcp_fsf_req *req)
2203{
2204 struct fcp_rsp_iu *fcp_rsp_iu = (struct fcp_rsp_iu *)
2205 &(req->qtcb->bottom.io.fcp_rsp);
2206 char *fcp_rsp_info = (unsigned char *) &fcp_rsp_iu[1];
2207
2208 if ((fcp_rsp_info[3] != RSP_CODE_GOOD) ||
2209 (req->status & ZFCP_STATUS_FSFREQ_ERROR))
2210 req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED;
2211}
2212
2213
2214static void zfcp_fsf_send_fcp_command_handler(struct zfcp_fsf_req *req)
2215{
2216 struct zfcp_unit *unit;
2217 struct fsf_qtcb_header *header = &req->qtcb->header;
2218
2219 if (unlikely(req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT))
2220 unit = req->data;
2221 else
2222 unit = req->unit;
2223
2224 if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR))
2225 goto skip_fsfstatus;
2226
2227 switch (header->fsf_status) {
2228 case FSF_HANDLE_MISMATCH:
2229 case FSF_PORT_HANDLE_NOT_VALID:
2230 zfcp_erp_adapter_reopen(unit->port->adapter, 0, "fssfch1", req);
2231 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2232 break;
2233 case FSF_FCPLUN_NOT_VALID:
2234 case FSF_LUN_HANDLE_NOT_VALID:
2235 zfcp_erp_port_reopen(unit->port, 0, "fssfch2", req);
2236 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2237 break;
2238 case FSF_SERVICE_CLASS_NOT_SUPPORTED:
2239 zfcp_fsf_class_not_supp(req);
2240 break;
2241 case FSF_ACCESS_DENIED:
2242 zfcp_fsf_access_denied_unit(req, unit);
2243 break;
2244 case FSF_DIRECTION_INDICATOR_NOT_VALID:
2245 dev_err(&req->adapter->ccw_device->dev,
2246 "Incorrect direction %d, unit 0x%016Lx on port "
2247 "0x%016Lx closed\n",
2248 req->qtcb->bottom.io.data_direction,
2249 (unsigned long long)unit->fcp_lun,
2250 (unsigned long long)unit->port->wwpn);
2251 zfcp_erp_adapter_shutdown(unit->port->adapter, 0, "fssfch3",
2252 req);
2253 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2254 break;
2255 case FSF_CMND_LENGTH_NOT_VALID:
2256 dev_err(&req->adapter->ccw_device->dev,
2257 "Incorrect CDB length %d, unit 0x%016Lx on "
2258 "port 0x%016Lx closed\n",
2259 req->qtcb->bottom.io.fcp_cmnd_length,
2260 (unsigned long long)unit->fcp_lun,
2261 (unsigned long long)unit->port->wwpn);
2262 zfcp_erp_adapter_shutdown(unit->port->adapter, 0, "fssfch4",
2263 req);
2264 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2265 break;
2266 case FSF_PORT_BOXED:
2267 zfcp_erp_port_boxed(unit->port, "fssfch5", req);
2268 req->status |= ZFCP_STATUS_FSFREQ_ERROR |
2269 ZFCP_STATUS_FSFREQ_RETRY;
2270 break;
2271 case FSF_LUN_BOXED:
2272 zfcp_erp_unit_boxed(unit, "fssfch6", req);
2273 req->status |= ZFCP_STATUS_FSFREQ_ERROR |
2274 ZFCP_STATUS_FSFREQ_RETRY;
2275 break;
2276 case FSF_ADAPTER_STATUS_AVAILABLE:
2277 if (header->fsf_status_qual.word[0] ==
2278 FSF_SQ_INVOKE_LINK_TEST_PROCEDURE)
2279 zfcp_test_link(unit->port);
2280 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2281 break;
2282 }
2283skip_fsfstatus:
2284 if (req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT)
2285 zfcp_fsf_send_fcp_ctm_handler(req);
2286 else {
2287 zfcp_fsf_send_fcp_command_task_handler(req);
2288 req->unit = NULL;
2289 zfcp_unit_put(unit);
2290 }
2291}
2292
2293static void zfcp_set_fcp_dl(struct fcp_cmnd_iu *fcp_cmd, u32 fcp_dl)
2294{
2295 u32 *fcp_dl_ptr;
2296
2297
2298
2299
2300
2301
2302 fcp_dl_ptr = (u32 *) ((unsigned char *) &fcp_cmd[1] +
2303 (fcp_cmd->add_fcp_cdb_length << 2));
2304 *fcp_dl_ptr = fcp_dl;
2305}
2306
2307
2308
2309
2310
2311
2312int zfcp_fsf_send_fcp_command_task(struct zfcp_unit *unit,
2313 struct scsi_cmnd *scsi_cmnd)
2314{
2315 struct zfcp_fsf_req *req;
2316 struct fcp_cmnd_iu *fcp_cmnd_iu;
2317 unsigned int sbtype;
2318 int real_bytes, retval = -EIO;
2319 struct zfcp_adapter *adapter = unit->port->adapter;
2320
2321 if (unlikely(!(atomic_read(&unit->status) &
2322 ZFCP_STATUS_COMMON_UNBLOCKED)))
2323 return -EBUSY;
2324
2325 spin_lock(&adapter->req_q_lock);
2326 if (atomic_read(&adapter->req_q.count) <= 0) {
2327 atomic_inc(&adapter->qdio_outb_full);
2328 goto out;
2329 }
2330 req = zfcp_fsf_req_create(adapter, FSF_QTCB_FCP_CMND,
2331 ZFCP_REQ_AUTO_CLEANUP,
2332 adapter->pool.fsf_req_scsi);
2333 if (IS_ERR(req)) {
2334 retval = PTR_ERR(req);
2335 goto out;
2336 }
2337
2338 zfcp_unit_get(unit);
2339 req->unit = unit;
2340 req->data = scsi_cmnd;
2341 req->handler = zfcp_fsf_send_fcp_command_handler;
2342 req->qtcb->header.lun_handle = unit->handle;
2343 req->qtcb->header.port_handle = unit->port->handle;
2344 req->qtcb->bottom.io.service_class = FSF_CLASS_3;
2345
2346 scsi_cmnd->host_scribble = (unsigned char *) req->req_id;
2347
2348 fcp_cmnd_iu = (struct fcp_cmnd_iu *) &(req->qtcb->bottom.io.fcp_cmnd);
2349 fcp_cmnd_iu->fcp_lun = unit->fcp_lun;
2350
2351
2352
2353
2354
2355
2356 switch (scsi_cmnd->sc_data_direction) {
2357 case DMA_NONE:
2358 req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND;
2359 sbtype = SBAL_FLAGS0_TYPE_READ;
2360 break;
2361 case DMA_FROM_DEVICE:
2362 req->qtcb->bottom.io.data_direction = FSF_DATADIR_READ;
2363 sbtype = SBAL_FLAGS0_TYPE_READ;
2364 fcp_cmnd_iu->rddata = 1;
2365 break;
2366 case DMA_TO_DEVICE:
2367 req->qtcb->bottom.io.data_direction = FSF_DATADIR_WRITE;
2368 sbtype = SBAL_FLAGS0_TYPE_WRITE;
2369 fcp_cmnd_iu->wddata = 1;
2370 break;
2371 case DMA_BIDIRECTIONAL:
2372 default:
2373 retval = -EIO;
2374 goto failed_scsi_cmnd;
2375 }
2376
2377 if (likely((scsi_cmnd->device->simple_tags) ||
2378 ((atomic_read(&unit->status) & ZFCP_STATUS_UNIT_READONLY) &&
2379 (atomic_read(&unit->status) & ZFCP_STATUS_UNIT_SHARED))))
2380 fcp_cmnd_iu->task_attribute = SIMPLE_Q;
2381 else
2382 fcp_cmnd_iu->task_attribute = UNTAGGED;
2383
2384 if (unlikely(scsi_cmnd->cmd_len > FCP_CDB_LENGTH))
2385 fcp_cmnd_iu->add_fcp_cdb_length =
2386 (scsi_cmnd->cmd_len - FCP_CDB_LENGTH) >> 2;
2387
2388 memcpy(fcp_cmnd_iu->fcp_cdb, scsi_cmnd->cmnd, scsi_cmnd->cmd_len);
2389
2390 req->qtcb->bottom.io.fcp_cmnd_length = sizeof(struct fcp_cmnd_iu) +
2391 fcp_cmnd_iu->add_fcp_cdb_length + sizeof(u32);
2392
2393 real_bytes = zfcp_qdio_sbals_from_sg(req, sbtype,
2394 scsi_sglist(scsi_cmnd),
2395 FSF_MAX_SBALS_PER_REQ);
2396 if (unlikely(real_bytes < 0)) {
2397 if (req->sbal_number < FSF_MAX_SBALS_PER_REQ)
2398 retval = -EIO;
2399 else {
2400 dev_err(&adapter->ccw_device->dev,
2401 "Oversize data package, unit 0x%016Lx "
2402 "on port 0x%016Lx closed\n",
2403 (unsigned long long)unit->fcp_lun,
2404 (unsigned long long)unit->port->wwpn);
2405 zfcp_erp_unit_shutdown(unit, 0, "fssfct1", req);
2406 retval = -EINVAL;
2407 }
2408 goto failed_scsi_cmnd;
2409 }
2410
2411 zfcp_set_fcp_dl(fcp_cmnd_iu, real_bytes);
2412
2413 retval = zfcp_fsf_req_send(req);
2414 if (unlikely(retval))
2415 goto failed_scsi_cmnd;
2416
2417 goto out;
2418
2419failed_scsi_cmnd:
2420 zfcp_unit_put(unit);
2421 zfcp_fsf_req_free(req);
2422 scsi_cmnd->host_scribble = NULL;
2423out:
2424 spin_unlock(&adapter->req_q_lock);
2425 return retval;
2426}
2427
2428
2429
2430
2431
2432
2433
2434struct zfcp_fsf_req *zfcp_fsf_send_fcp_ctm(struct zfcp_unit *unit, u8 tm_flags)
2435{
2436 struct qdio_buffer_element *sbale;
2437 struct zfcp_fsf_req *req = NULL;
2438 struct fcp_cmnd_iu *fcp_cmnd_iu;
2439 struct zfcp_adapter *adapter = unit->port->adapter;
2440
2441 if (unlikely(!(atomic_read(&unit->status) &
2442 ZFCP_STATUS_COMMON_UNBLOCKED)))
2443 return NULL;
2444
2445 spin_lock_bh(&adapter->req_q_lock);
2446 if (zfcp_fsf_req_sbal_get(adapter))
2447 goto out;
2448 req = zfcp_fsf_req_create(adapter, FSF_QTCB_FCP_CMND, 0,
2449 adapter->pool.fsf_req_scsi);
2450 if (IS_ERR(req)) {
2451 req = NULL;
2452 goto out;
2453 }
2454
2455 req->status |= ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT;
2456 req->data = unit;
2457 req->handler = zfcp_fsf_send_fcp_command_handler;
2458 req->qtcb->header.lun_handle = unit->handle;
2459 req->qtcb->header.port_handle = unit->port->handle;
2460 req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND;
2461 req->qtcb->bottom.io.service_class = FSF_CLASS_3;
2462 req->qtcb->bottom.io.fcp_cmnd_length = sizeof(struct fcp_cmnd_iu) +
2463 sizeof(u32);
2464
2465 sbale = zfcp_qdio_sbale_req(req);
2466 sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE;
2467 sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY;
2468
2469 fcp_cmnd_iu = (struct fcp_cmnd_iu *) &req->qtcb->bottom.io.fcp_cmnd;
2470 fcp_cmnd_iu->fcp_lun = unit->fcp_lun;
2471 fcp_cmnd_iu->task_management_flags = tm_flags;
2472
2473 zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT);
2474 if (!zfcp_fsf_req_send(req))
2475 goto out;
2476
2477 zfcp_fsf_req_free(req);
2478 req = NULL;
2479out:
2480 spin_unlock_bh(&adapter->req_q_lock);
2481 return req;
2482}
2483
2484static void zfcp_fsf_control_file_handler(struct zfcp_fsf_req *req)
2485{
2486}
2487
2488
2489
2490
2491
2492
2493
2494struct zfcp_fsf_req *zfcp_fsf_control_file(struct zfcp_adapter *adapter,
2495 struct zfcp_fsf_cfdc *fsf_cfdc)
2496{
2497 struct qdio_buffer_element *sbale;
2498 struct zfcp_fsf_req *req = NULL;
2499 struct fsf_qtcb_bottom_support *bottom;
2500 int direction, retval = -EIO, bytes;
2501
2502 if (!(adapter->adapter_features & FSF_FEATURE_CFDC))
2503 return ERR_PTR(-EOPNOTSUPP);
2504
2505 switch (fsf_cfdc->command) {
2506 case FSF_QTCB_DOWNLOAD_CONTROL_FILE:
2507 direction = SBAL_FLAGS0_TYPE_WRITE;
2508 break;
2509 case FSF_QTCB_UPLOAD_CONTROL_FILE:
2510 direction = SBAL_FLAGS0_TYPE_READ;
2511 break;
2512 default:
2513 return ERR_PTR(-EINVAL);
2514 }
2515
2516 spin_lock_bh(&adapter->req_q_lock);
2517 if (zfcp_fsf_req_sbal_get(adapter))
2518 goto out;
2519
2520 req = zfcp_fsf_req_create(adapter, fsf_cfdc->command, 0, NULL);
2521 if (IS_ERR(req)) {
2522 retval = -EPERM;
2523 goto out;
2524 }
2525
2526 req->handler = zfcp_fsf_control_file_handler;
2527
2528 sbale = zfcp_qdio_sbale_req(req);
2529 sbale[0].flags |= direction;
2530
2531 bottom = &req->qtcb->bottom.support;
2532 bottom->operation_subtype = FSF_CFDC_OPERATION_SUBTYPE;
2533 bottom->option = fsf_cfdc->option;
2534
2535 bytes = zfcp_qdio_sbals_from_sg(req, direction, fsf_cfdc->sg,
2536 FSF_MAX_SBALS_PER_REQ);
2537 if (bytes != ZFCP_CFDC_MAX_SIZE) {
2538 retval = -ENOMEM;
2539 zfcp_fsf_req_free(req);
2540 goto out;
2541 }
2542
2543 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
2544 retval = zfcp_fsf_req_send(req);
2545out:
2546 spin_unlock_bh(&adapter->req_q_lock);
2547
2548 if (!retval) {
2549 wait_event(req->completion_wq,
2550 req->status & ZFCP_STATUS_FSFREQ_COMPLETED);
2551 return req;
2552 }
2553 return ERR_PTR(retval);
2554}
2555
