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8
9#define KMSG_COMPONENT "zfcp"
10#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
11
12#include <linux/blktrace_api.h>
13#include <linux/slab.h>
14#include <scsi/fc/fc_els.h>
15#include "zfcp_ext.h"
16#include "zfcp_fc.h"
17#include "zfcp_dbf.h"
18#include "zfcp_qdio.h"
19#include "zfcp_reqlist.h"
20
21struct kmem_cache *zfcp_fsf_qtcb_cache;
22
23static void zfcp_fsf_request_timeout_handler(unsigned long data)
24{
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,
28 "fsrth_1");
29}
30
31static void zfcp_fsf_start_timer(struct zfcp_fsf_req *fsf_req,
32 unsigned long timeout)
33{
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);
38}
39
40static void zfcp_fsf_start_erp_timer(struct zfcp_fsf_req *fsf_req)
41{
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);
47}
48
49
50static 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
64};
65
66static void zfcp_fsf_class_not_supp(struct zfcp_fsf_req *req)
67{
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;
72}
73
74
75
76
77
78void zfcp_fsf_req_free(struct zfcp_fsf_req *req)
79{
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);
84 return;
85 }
86
87 if (likely(req->qtcb))
88 kmem_cache_free(zfcp_fsf_qtcb_cache, req->qtcb);
89 kfree(req);
90}
91
92static void zfcp_fsf_status_read_port_closed(struct zfcp_fsf_req *req)
93{
94 unsigned long flags;
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);
99
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");
104 break;
105 }
106 read_unlock_irqrestore(&adapter->port_list_lock, flags);
107}
108
109static void zfcp_fsf_link_down_info_eval(struct zfcp_fsf_req *req,
110 struct fsf_link_down_info *link_down)
111{
112 struct zfcp_adapter *adapter = req->adapter;
113
114 if (atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED)
115 return;
116
117 atomic_set_mask(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED, &adapter->status);
118
119 zfcp_scsi_schedule_rports_block(adapter);
120
121 if (!link_down)
122 goto out;
123
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");
129 break;
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 "
133 "channel cable\n");
134 break;
135 case FSF_PSQ_LINK_NO_FCP:
136 dev_warn(&req->adapter->ccw_device->dev,
137 "The adjacent fibre channel node does not "
138 "support FCP\n");
139 break;
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");
144 break;
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");
149 break;
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");
153 break;
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");
157 break;
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");
162 break;
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");
167 break;
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");
172 break;
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");
177 break;
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 "
181 "been assigned\n");
182 break;
183 default:
184 dev_warn(&req->adapter->ccw_device->dev,
185 "The link between the FCP adapter and "
186 "the FC fabric is down\n");
187 }
188out:
189 zfcp_erp_set_adapter_status(adapter, ZFCP_STATUS_COMMON_ERP_FAILED);
190}
191
192static void zfcp_fsf_status_read_link_down(struct zfcp_fsf_req *req)
193{
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;
197
198 switch (sr_buf->status_subtype) {
199 case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK:
200 zfcp_fsf_link_down_info_eval(req, ldi);
201 break;
202 case FSF_STATUS_READ_SUB_FDISC_FAILED:
203 zfcp_fsf_link_down_info_eval(req, ldi);
204 break;
205 case FSF_STATUS_READ_SUB_FIRMWARE_UPDATE:
206 zfcp_fsf_link_down_info_eval(req, NULL);
207 };
208}
209
210static void zfcp_fsf_status_read_handler(struct zfcp_fsf_req *req)
211{
212 struct zfcp_adapter *adapter = req->adapter;
213 struct fsf_status_read_buffer *sr_buf = req->data;
214
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);
219 return;
220 }
221
222 zfcp_dbf_hba_fsf_uss("fssrh_4", req);
223
224 switch (sr_buf->status_type) {
225 case FSF_STATUS_READ_PORT_CLOSED:
226 zfcp_fsf_status_read_port_closed(req);
227 break;
228 case FSF_STATUS_READ_INCOMING_ELS:
229 zfcp_fc_incoming_els(req);
230 break;
231 case FSF_STATUS_READ_SENSE_DATA_AVAIL:
232 break;
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);
238 break;
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);
242 break;
243 case FSF_STATUS_READ_LINK_UP:
244 dev_info(&adapter->ccw_device->dev,
245 "The local link has been restored\n");
246
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,
252 "fssrh_2");
253 zfcp_fc_enqueue_event(adapter, FCH_EVT_LINKUP, 0);
254
255 break;
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);
259 break;
260 case FSF_STATUS_READ_FEATURE_UPDATE_ALERT:
261 adapter->adapter_features = sr_buf->payload.word[0];
262 break;
263 }
264
265 mempool_free(virt_to_page(sr_buf), adapter->pool.sr_data);
266 zfcp_fsf_req_free(req);
267
268 atomic_inc(&adapter->stat_miss);
269 queue_work(adapter->work_queue, &adapter->stat_work);
270}
271
272static void zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req *req)
273{
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:
279 return;
280 case FSF_SQ_COMMAND_ABORTED:
281 break;
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");
288 break;
289 }
290
291 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
292}
293
294static void zfcp_fsf_fsfstatus_eval(struct zfcp_fsf_req *req)
295{
296 if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR))
297 return;
298
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;
306 break;
307 case FSF_ADAPTER_STATUS_AVAILABLE:
308 zfcp_fsf_fsfstatus_qual_eval(req);
309 break;
310 }
311}
312
313static void zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *req)
314{
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;
318
319 zfcp_dbf_hba_fsf_response(req);
320
321 if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) {
322 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
323 return;
324 }
325
326 switch (qtcb->prefix.prot_status) {
327 case FSF_PROT_GOOD:
328 case FSF_PROT_FSF_STATUS_PRESENTED:
329 return;
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");
336 break;
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;
341 break;
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");
346 break;
347 case FSF_PROT_HOST_CONNECTION_INITIALIZING:
348 atomic_set_mask(ZFCP_STATUS_ADAPTER_HOST_CON_INIT,
349 &adapter->status);
350 break;
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");
356 break;
357 case FSF_PROT_LINK_DOWN:
358 zfcp_fsf_link_down_info_eval(req, &psq->link_down_info);
359
360 zfcp_erp_adapter_reopen(adapter, 0, "fspse_6");
361 break;
362 case FSF_PROT_REEST_QUEUE:
363
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,
369 "fspse_8");
370 break;
371 default:
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");
377 }
378 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
379}
380
381
382
383
384
385
386
387
388
389
390static void zfcp_fsf_req_complete(struct zfcp_fsf_req *req)
391{
392 if (unlikely(req->fsf_command == FSF_QTCB_UNSOLICITED_STATUS)) {
393 zfcp_fsf_status_read_handler(req);
394 return;
395 }
396
397 del_timer(&req->timer);
398 zfcp_fsf_protstatus_eval(req);
399 zfcp_fsf_fsfstatus_eval(req);
400 req->handler(req);
401
402 if (req->erp_action)
403 zfcp_erp_notify(req->erp_action, 0);
404
405 if (likely(req->status & ZFCP_STATUS_FSFREQ_CLEANUP))
406 zfcp_fsf_req_free(req);
407 else
408 complete(&req->completion);
409}
410
411
412
413
414
415
416
417
418
419
420void zfcp_fsf_req_dismiss_all(struct zfcp_adapter *adapter)
421{
422 struct zfcp_fsf_req *req, *tmp;
423 LIST_HEAD(remove_queue);
424
425 BUG_ON(atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP);
426 zfcp_reqlist_move(adapter->req_list, &remove_queue);
427
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);
432 }
433}
434
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)
442
443static u32 zfcp_fsf_convert_portspeed(u32 fsf_speed)
444{
445 u32 fdmi_speed = 0;
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;
460 return fdmi_speed;
461}
462
463static int zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req *req)
464{
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;
469
470
471 nsp = (struct fc_els_flogi *) ((u8 *)&bottom->nport_serv_param
472 - sizeof(u32));
473 plogi = (struct fc_els_flogi *) ((u8 *)&bottom->plogi_payload
474 - sizeof(u32));
475
476 if (req->data)
477 memcpy(req->data, bottom, sizeof(*bottom));
478
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;
482
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);
486
487 if (fc_host_permanent_port_name(shost) == -1)
488 fc_host_permanent_port_name(shost) = fc_host_port_name(shost);
489
490 zfcp_scsi_set_prot(adapter);
491
492
493
494 if (req->qtcb->header.fsf_status == FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE)
495 return 0;
496
497 fc_host_port_id(shost) = ntoh24(bottom->s_id);
498 fc_host_speed(shost) =
499 zfcp_fsf_convert_portspeed(bottom->fc_link_speed);
500
501 adapter->hydra_version = bottom->adapter_type;
502
503 switch (bottom->fc_topology) {
504 case FSF_TOPO_P2P:
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;
509 break;
510 case FSF_TOPO_FABRIC:
511 fc_host_port_type(shost) = FC_PORTTYPE_NPORT;
512 break;
513 case FSF_TOPO_AL:
514 fc_host_port_type(shost) = FC_PORTTYPE_NLPORT;
515
516 default:
517 dev_err(&adapter->ccw_device->dev,
518 "Unknown or unsupported arbitrated loop "
519 "fibre channel topology detected\n");
520 zfcp_erp_adapter_shutdown(adapter, 0, "fsece_1");
521 return -EIO;
522 }
523
524 return 0;
525}
526
527static void zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *req)
528{
529 struct zfcp_adapter *adapter = req->adapter;
530 struct fsf_qtcb *qtcb = req->qtcb;
531 struct fsf_qtcb_bottom_config *bottom = &qtcb->bottom.config;
532 struct Scsi_Host *shost = adapter->scsi_host;
533
534 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
535 return;
536
537 adapter->fsf_lic_version = bottom->lic_version;
538 adapter->adapter_features = bottom->adapter_features;
539 adapter->connection_features = bottom->connection_features;
540 adapter->peer_wwpn = 0;
541 adapter->peer_wwnn = 0;
542 adapter->peer_d_id = 0;
543
544 switch (qtcb->header.fsf_status) {
545 case FSF_GOOD:
546 if (zfcp_fsf_exchange_config_evaluate(req))
547 return;
548
549 if (bottom->max_qtcb_size < sizeof(struct fsf_qtcb)) {
550 dev_err(&adapter->ccw_device->dev,
551 "FCP adapter maximum QTCB size (%d bytes) "
552 "is too small\n",
553 bottom->max_qtcb_size);
554 zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh1");
555 return;
556 }
557 atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK,
558 &adapter->status);
559 break;
560 case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE:
561 fc_host_node_name(shost) = 0;
562 fc_host_port_name(shost) = 0;
563 fc_host_port_id(shost) = 0;
564 fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN;
565 fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN;
566 adapter->hydra_version = 0;
567
568
569
570 atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK,
571 &adapter->status);
572 zfcp_fsf_link_down_info_eval(req,
573 &qtcb->header.fsf_status_qual.link_down_info);
574 if (zfcp_fsf_exchange_config_evaluate(req))
575 return;
576 break;
577 default:
578 zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh3");
579 return;
580 }
581
582 if (adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT) {
583 adapter->hardware_version = bottom->hardware_version;
584 memcpy(fc_host_serial_number(shost), bottom->serial_number,
585 min(FC_SERIAL_NUMBER_SIZE, 17));
586 EBCASC(fc_host_serial_number(shost),
587 min(FC_SERIAL_NUMBER_SIZE, 17));
588 }
589
590 if (FSF_QTCB_CURRENT_VERSION < bottom->low_qtcb_version) {
591 dev_err(&adapter->ccw_device->dev,
592 "The FCP adapter only supports newer "
593 "control block versions\n");
594 zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh4");
595 return;
596 }
597 if (FSF_QTCB_CURRENT_VERSION > bottom->high_qtcb_version) {
598 dev_err(&adapter->ccw_device->dev,
599 "The FCP adapter only supports older "
600 "control block versions\n");
601 zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh5");
602 }
603}
604
605static void zfcp_fsf_exchange_port_evaluate(struct zfcp_fsf_req *req)
606{
607 struct zfcp_adapter *adapter = req->adapter;
608 struct fsf_qtcb_bottom_port *bottom = &req->qtcb->bottom.port;
609 struct Scsi_Host *shost = adapter->scsi_host;
610
611 if (req->data)
612 memcpy(req->data, bottom, sizeof(*bottom));
613
614 if (adapter->connection_features & FSF_FEATURE_NPIV_MODE) {
615 fc_host_permanent_port_name(shost) = bottom->wwpn;
616 fc_host_port_type(shost) = FC_PORTTYPE_NPIV;
617 } else
618 fc_host_permanent_port_name(shost) = fc_host_port_name(shost);
619 fc_host_maxframe_size(shost) = bottom->maximum_frame_size;
620 fc_host_supported_speeds(shost) =
621 zfcp_fsf_convert_portspeed(bottom->supported_speed);
622 memcpy(fc_host_supported_fc4s(shost), bottom->supported_fc4_types,
623 FC_FC4_LIST_SIZE);
624 memcpy(fc_host_active_fc4s(shost), bottom->active_fc4_types,
625 FC_FC4_LIST_SIZE);
626}
627
628static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *req)
629{
630 struct fsf_qtcb *qtcb = req->qtcb;
631
632 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
633 return;
634
635 switch (qtcb->header.fsf_status) {
636 case FSF_GOOD:
637 zfcp_fsf_exchange_port_evaluate(req);
638 break;
639 case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE:
640 zfcp_fsf_exchange_port_evaluate(req);
641 zfcp_fsf_link_down_info_eval(req,
642 &qtcb->header.fsf_status_qual.link_down_info);
643 break;
644 }
645}
646
647static struct zfcp_fsf_req *zfcp_fsf_alloc(mempool_t *pool)
648{
649 struct zfcp_fsf_req *req;
650
651 if (likely(pool))
652 req = mempool_alloc(pool, GFP_ATOMIC);
653 else
654 req = kmalloc(sizeof(*req), GFP_ATOMIC);
655
656 if (unlikely(!req))
657 return NULL;
658
659 memset(req, 0, sizeof(*req));
660 req->pool = pool;
661 return req;
662}
663
664static struct fsf_qtcb *zfcp_qtcb_alloc(mempool_t *pool)
665{
666 struct fsf_qtcb *qtcb;
667
668 if (likely(pool))
669 qtcb = mempool_alloc(pool, GFP_ATOMIC);
670 else
671 qtcb = kmem_cache_alloc(zfcp_fsf_qtcb_cache, GFP_ATOMIC);
672
673 if (unlikely(!qtcb))
674 return NULL;
675
676 memset(qtcb, 0, sizeof(*qtcb));
677 return qtcb;
678}
679
680static struct zfcp_fsf_req *zfcp_fsf_req_create(struct zfcp_qdio *qdio,
681 u32 fsf_cmd, u8 sbtype,
682 mempool_t *pool)
683{
684 struct zfcp_adapter *adapter = qdio->adapter;
685 struct zfcp_fsf_req *req = zfcp_fsf_alloc(pool);
686
687 if (unlikely(!req))
688 return ERR_PTR(-ENOMEM);
689
690 if (adapter->req_no == 0)
691 adapter->req_no++;
692
693 INIT_LIST_HEAD(&req->list);
694 init_timer(&req->timer);
695 init_completion(&req->completion);
696
697 req->adapter = adapter;
698 req->fsf_command = fsf_cmd;
699 req->req_id = adapter->req_no;
700
701 if (likely(fsf_cmd != FSF_QTCB_UNSOLICITED_STATUS)) {
702 if (likely(pool))
703 req->qtcb = zfcp_qtcb_alloc(adapter->pool.qtcb_pool);
704 else
705 req->qtcb = zfcp_qtcb_alloc(NULL);
706
707 if (unlikely(!req->qtcb)) {
708 zfcp_fsf_req_free(req);
709 return ERR_PTR(-ENOMEM);
710 }
711
712 req->seq_no = adapter->fsf_req_seq_no;
713 req->qtcb->prefix.req_seq_no = adapter->fsf_req_seq_no;
714 req->qtcb->prefix.req_id = req->req_id;
715 req->qtcb->prefix.ulp_info = 26;
716 req->qtcb->prefix.qtcb_type = fsf_qtcb_type[req->fsf_command];
717 req->qtcb->prefix.qtcb_version = FSF_QTCB_CURRENT_VERSION;
718 req->qtcb->header.req_handle = req->req_id;
719 req->qtcb->header.fsf_command = req->fsf_command;
720 }
721
722 zfcp_qdio_req_init(adapter->qdio, &req->qdio_req, req->req_id, sbtype,
723 req->qtcb, sizeof(struct fsf_qtcb));
724
725 return req;
726}
727
728static int zfcp_fsf_req_send(struct zfcp_fsf_req *req)
729{
730 struct zfcp_adapter *adapter = req->adapter;
731 struct zfcp_qdio *qdio = adapter->qdio;
732 int with_qtcb = (req->qtcb != NULL);
733 int req_id = req->req_id;
734
735 zfcp_reqlist_add(adapter->req_list, req);
736
737 req->qdio_req.qdio_outb_usage = atomic_read(&qdio->req_q_free);
738 req->issued = get_tod_clock();
739 if (zfcp_qdio_send(qdio, &req->qdio_req)) {
740 del_timer(&req->timer);
741
742 zfcp_reqlist_find_rm(adapter->req_list, req_id);
743 zfcp_erp_adapter_reopen(adapter, 0, "fsrs__1");
744 return -EIO;
745 }
746
747
748 if (with_qtcb)
749 adapter->fsf_req_seq_no++;
750 adapter->req_no++;
751
752 return 0;
753}
754
755
756
757
758
759
760
761int zfcp_fsf_status_read(struct zfcp_qdio *qdio)
762{
763 struct zfcp_adapter *adapter = qdio->adapter;
764 struct zfcp_fsf_req *req;
765 struct fsf_status_read_buffer *sr_buf;
766 struct page *page;
767 int retval = -EIO;
768
769 spin_lock_irq(&qdio->req_q_lock);
770 if (zfcp_qdio_sbal_get(qdio))
771 goto out;
772
773 req = zfcp_fsf_req_create(qdio, FSF_QTCB_UNSOLICITED_STATUS, 0,
774 adapter->pool.status_read_req);
775 if (IS_ERR(req)) {
776 retval = PTR_ERR(req);
777 goto out;
778 }
779
780 page = mempool_alloc(adapter->pool.sr_data, GFP_ATOMIC);
781 if (!page) {
782 retval = -ENOMEM;
783 goto failed_buf;
784 }
785 sr_buf = page_address(page);
786 memset(sr_buf, 0, sizeof(*sr_buf));
787 req->data = sr_buf;
788
789 zfcp_qdio_fill_next(qdio, &req->qdio_req, sr_buf, sizeof(*sr_buf));
790 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
791
792 retval = zfcp_fsf_req_send(req);
793 if (retval)
794 goto failed_req_send;
795
796 goto out;
797
798failed_req_send:
799 req->data = NULL;
800 mempool_free(virt_to_page(sr_buf), adapter->pool.sr_data);
801failed_buf:
802 zfcp_dbf_hba_fsf_uss("fssr__1", req);
803 zfcp_fsf_req_free(req);
804out:
805 spin_unlock_irq(&qdio->req_q_lock);
806 return retval;
807}
808
809static void zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req *req)
810{
811 struct scsi_device *sdev = req->data;
812 struct zfcp_scsi_dev *zfcp_sdev;
813 union fsf_status_qual *fsq = &req->qtcb->header.fsf_status_qual;
814
815 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
816 return;
817
818 zfcp_sdev = sdev_to_zfcp(sdev);
819
820 switch (req->qtcb->header.fsf_status) {
821 case FSF_PORT_HANDLE_NOT_VALID:
822 if (fsq->word[0] == fsq->word[1]) {
823 zfcp_erp_adapter_reopen(zfcp_sdev->port->adapter, 0,
824 "fsafch1");
825 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
826 }
827 break;
828 case FSF_LUN_HANDLE_NOT_VALID:
829 if (fsq->word[0] == fsq->word[1]) {
830 zfcp_erp_port_reopen(zfcp_sdev->port, 0, "fsafch2");
831 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
832 }
833 break;
834 case FSF_FCP_COMMAND_DOES_NOT_EXIST:
835 req->status |= ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED;
836 break;
837 case FSF_PORT_BOXED:
838 zfcp_erp_set_port_status(zfcp_sdev->port,
839 ZFCP_STATUS_COMMON_ACCESS_BOXED);
840 zfcp_erp_port_reopen(zfcp_sdev->port,
841 ZFCP_STATUS_COMMON_ERP_FAILED, "fsafch3");
842 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
843 break;
844 case FSF_LUN_BOXED:
845 zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_ACCESS_BOXED);
846 zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED,
847 "fsafch4");
848 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
849 break;
850 case FSF_ADAPTER_STATUS_AVAILABLE:
851 switch (fsq->word[0]) {
852 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
853 zfcp_fc_test_link(zfcp_sdev->port);
854
855 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
856 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
857 break;
858 }
859 break;
860 case FSF_GOOD:
861 req->status |= ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED;
862 break;
863 }
864}
865
866
867
868
869
870
871
872struct zfcp_fsf_req *zfcp_fsf_abort_fcp_cmnd(struct scsi_cmnd *scmnd)
873{
874 struct zfcp_fsf_req *req = NULL;
875 struct scsi_device *sdev = scmnd->device;
876 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
877 struct zfcp_qdio *qdio = zfcp_sdev->port->adapter->qdio;
878 unsigned long old_req_id = (unsigned long) scmnd->host_scribble;
879
880 spin_lock_irq(&qdio->req_q_lock);
881 if (zfcp_qdio_sbal_get(qdio))
882 goto out;
883 req = zfcp_fsf_req_create(qdio, FSF_QTCB_ABORT_FCP_CMND,
884 SBAL_SFLAGS0_TYPE_READ,
885 qdio->adapter->pool.scsi_abort);
886 if (IS_ERR(req)) {
887 req = NULL;
888 goto out;
889 }
890
891 if (unlikely(!(atomic_read(&zfcp_sdev->status) &
892 ZFCP_STATUS_COMMON_UNBLOCKED)))
893 goto out_error_free;
894
895 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
896
897 req->data = sdev;
898 req->handler = zfcp_fsf_abort_fcp_command_handler;
899 req->qtcb->header.lun_handle = zfcp_sdev->lun_handle;
900 req->qtcb->header.port_handle = zfcp_sdev->port->handle;
901 req->qtcb->bottom.support.req_handle = (u64) old_req_id;
902
903 zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT);
904 if (!zfcp_fsf_req_send(req))
905 goto out;
906
907out_error_free:
908 zfcp_fsf_req_free(req);
909 req = NULL;
910out:
911 spin_unlock_irq(&qdio->req_q_lock);
912 return req;
913}
914
915static void zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *req)
916{
917 struct zfcp_adapter *adapter = req->adapter;
918 struct zfcp_fsf_ct_els *ct = req->data;
919 struct fsf_qtcb_header *header = &req->qtcb->header;
920
921 ct->status = -EINVAL;
922
923 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
924 goto skip_fsfstatus;
925
926 switch (header->fsf_status) {
927 case FSF_GOOD:
928 zfcp_dbf_san_res("fsscth2", req);
929 ct->status = 0;
930 break;
931 case FSF_SERVICE_CLASS_NOT_SUPPORTED:
932 zfcp_fsf_class_not_supp(req);
933 break;
934 case FSF_ADAPTER_STATUS_AVAILABLE:
935 switch (header->fsf_status_qual.word[0]){
936 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
937 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
938 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
939 break;
940 }
941 break;
942 case FSF_PORT_BOXED:
943 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
944 break;
945 case FSF_PORT_HANDLE_NOT_VALID:
946 zfcp_erp_adapter_reopen(adapter, 0, "fsscth1");
947
948 case FSF_GENERIC_COMMAND_REJECTED:
949 case FSF_PAYLOAD_SIZE_MISMATCH:
950 case FSF_REQUEST_SIZE_TOO_LARGE:
951 case FSF_RESPONSE_SIZE_TOO_LARGE:
952 case FSF_SBAL_MISMATCH:
953 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
954 break;
955 }
956
957skip_fsfstatus:
958 if (ct->handler)
959 ct->handler(ct->handler_data);
960}
961
962static void zfcp_fsf_setup_ct_els_unchained(struct zfcp_qdio *qdio,
963 struct zfcp_qdio_req *q_req,
964 struct scatterlist *sg_req,
965 struct scatterlist *sg_resp)
966{
967 zfcp_qdio_fill_next(qdio, q_req, sg_virt(sg_req), sg_req->length);
968 zfcp_qdio_fill_next(qdio, q_req, sg_virt(sg_resp), sg_resp->length);
969 zfcp_qdio_set_sbale_last(qdio, q_req);
970}
971
972static int zfcp_fsf_setup_ct_els_sbals(struct zfcp_fsf_req *req,
973 struct scatterlist *sg_req,
974 struct scatterlist *sg_resp)
975{
976 struct zfcp_adapter *adapter = req->adapter;
977 struct zfcp_qdio *qdio = adapter->qdio;
978 struct fsf_qtcb *qtcb = req->qtcb;
979 u32 feat = adapter->adapter_features;
980
981 if (zfcp_adapter_multi_buffer_active(adapter)) {
982 if (zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, sg_req))
983 return -EIO;
984 if (zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, sg_resp))
985 return -EIO;
986
987 zfcp_qdio_set_data_div(qdio, &req->qdio_req,
988 zfcp_qdio_sbale_count(sg_req));
989 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
990 zfcp_qdio_set_scount(qdio, &req->qdio_req);
991 return 0;
992 }
993
994
995 if (zfcp_qdio_sg_one_sbale(sg_req) && zfcp_qdio_sg_one_sbale(sg_resp)) {
996 zfcp_fsf_setup_ct_els_unchained(qdio, &req->qdio_req,
997 sg_req, sg_resp);
998 return 0;
999 }
1000
1001 if (!(feat & FSF_FEATURE_ELS_CT_CHAINED_SBALS))
1002 return -EOPNOTSUPP;
1003
1004 if (zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, sg_req))
1005 return -EIO;
1006
1007 qtcb->bottom.support.req_buf_length = zfcp_qdio_real_bytes(sg_req);
1008
1009 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1010 zfcp_qdio_skip_to_last_sbale(qdio, &req->qdio_req);
1011
1012 if (zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, sg_resp))
1013 return -EIO;
1014
1015 qtcb->bottom.support.resp_buf_length = zfcp_qdio_real_bytes(sg_resp);
1016
1017 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1018
1019 return 0;
1020}
1021
1022static int zfcp_fsf_setup_ct_els(struct zfcp_fsf_req *req,
1023 struct scatterlist *sg_req,
1024 struct scatterlist *sg_resp,
1025 unsigned int timeout)
1026{
1027 int ret;
1028
1029 ret = zfcp_fsf_setup_ct_els_sbals(req, sg_req, sg_resp);
1030 if (ret)
1031 return ret;
1032
1033
1034 if (timeout > 255)
1035 timeout = 255;
1036 req->qtcb->bottom.support.service_class = FSF_CLASS_3;
1037 req->qtcb->bottom.support.timeout = timeout;
1038 zfcp_fsf_start_timer(req, (timeout + 10) * HZ);
1039
1040 return 0;
1041}
1042
1043
1044
1045
1046
1047
1048int zfcp_fsf_send_ct(struct zfcp_fc_wka_port *wka_port,
1049 struct zfcp_fsf_ct_els *ct, mempool_t *pool,
1050 unsigned int timeout)
1051{
1052 struct zfcp_qdio *qdio = wka_port->adapter->qdio;
1053 struct zfcp_fsf_req *req;
1054 int ret = -EIO;
1055
1056 spin_lock_irq(&qdio->req_q_lock);
1057 if (zfcp_qdio_sbal_get(qdio))
1058 goto out;
1059
1060 req = zfcp_fsf_req_create(qdio, FSF_QTCB_SEND_GENERIC,
1061 SBAL_SFLAGS0_TYPE_WRITE_READ, pool);
1062
1063 if (IS_ERR(req)) {
1064 ret = PTR_ERR(req);
1065 goto out;
1066 }
1067
1068 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1069 ret = zfcp_fsf_setup_ct_els(req, ct->req, ct->resp, timeout);
1070 if (ret)
1071 goto failed_send;
1072
1073 req->handler = zfcp_fsf_send_ct_handler;
1074 req->qtcb->header.port_handle = wka_port->handle;
1075 req->data = ct;
1076
1077 zfcp_dbf_san_req("fssct_1", req, wka_port->d_id);
1078
1079 ret = zfcp_fsf_req_send(req);
1080 if (ret)
1081 goto failed_send;
1082
1083 goto out;
1084
1085failed_send:
1086 zfcp_fsf_req_free(req);
1087out:
1088 spin_unlock_irq(&qdio->req_q_lock);
1089 return ret;
1090}
1091
1092static void zfcp_fsf_send_els_handler(struct zfcp_fsf_req *req)
1093{
1094 struct zfcp_fsf_ct_els *send_els = req->data;
1095 struct fsf_qtcb_header *header = &req->qtcb->header;
1096
1097 send_els->status = -EINVAL;
1098
1099 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1100 goto skip_fsfstatus;
1101
1102 switch (header->fsf_status) {
1103 case FSF_GOOD:
1104 zfcp_dbf_san_res("fsselh1", req);
1105 send_els->status = 0;
1106 break;
1107 case FSF_SERVICE_CLASS_NOT_SUPPORTED:
1108 zfcp_fsf_class_not_supp(req);
1109 break;
1110 case FSF_ADAPTER_STATUS_AVAILABLE:
1111 switch (header->fsf_status_qual.word[0]){
1112 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1113 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1114 case FSF_SQ_RETRY_IF_POSSIBLE:
1115 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1116 break;
1117 }
1118 break;
1119 case FSF_ELS_COMMAND_REJECTED:
1120 case FSF_PAYLOAD_SIZE_MISMATCH:
1121 case FSF_REQUEST_SIZE_TOO_LARGE:
1122 case FSF_RESPONSE_SIZE_TOO_LARGE:
1123 break;
1124 case FSF_SBAL_MISMATCH:
1125
1126
1127 default:
1128 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1129 break;
1130 }
1131skip_fsfstatus:
1132 if (send_els->handler)
1133 send_els->handler(send_els->handler_data);
1134}
1135
1136
1137
1138
1139
1140int zfcp_fsf_send_els(struct zfcp_adapter *adapter, u32 d_id,
1141 struct zfcp_fsf_ct_els *els, unsigned int timeout)
1142{
1143 struct zfcp_fsf_req *req;
1144 struct zfcp_qdio *qdio = adapter->qdio;
1145 int ret = -EIO;
1146
1147 spin_lock_irq(&qdio->req_q_lock);
1148 if (zfcp_qdio_sbal_get(qdio))
1149 goto out;
1150
1151 req = zfcp_fsf_req_create(qdio, FSF_QTCB_SEND_ELS,
1152 SBAL_SFLAGS0_TYPE_WRITE_READ, NULL);
1153
1154 if (IS_ERR(req)) {
1155 ret = PTR_ERR(req);
1156 goto out;
1157 }
1158
1159 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1160
1161 if (!zfcp_adapter_multi_buffer_active(adapter))
1162 zfcp_qdio_sbal_limit(qdio, &req->qdio_req, 2);
1163
1164 ret = zfcp_fsf_setup_ct_els(req, els->req, els->resp, timeout);
1165
1166 if (ret)
1167 goto failed_send;
1168
1169 hton24(req->qtcb->bottom.support.d_id, d_id);
1170 req->handler = zfcp_fsf_send_els_handler;
1171 req->data = els;
1172
1173 zfcp_dbf_san_req("fssels1", req, d_id);
1174
1175 ret = zfcp_fsf_req_send(req);
1176 if (ret)
1177 goto failed_send;
1178
1179 goto out;
1180
1181failed_send:
1182 zfcp_fsf_req_free(req);
1183out:
1184 spin_unlock_irq(&qdio->req_q_lock);
1185 return ret;
1186}
1187
1188int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action)
1189{
1190 struct zfcp_fsf_req *req;
1191 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1192 int retval = -EIO;
1193
1194 spin_lock_irq(&qdio->req_q_lock);
1195 if (zfcp_qdio_sbal_get(qdio))
1196 goto out;
1197
1198 req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_CONFIG_DATA,
1199 SBAL_SFLAGS0_TYPE_READ,
1200 qdio->adapter->pool.erp_req);
1201
1202 if (IS_ERR(req)) {
1203 retval = PTR_ERR(req);
1204 goto out;
1205 }
1206
1207 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1208 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1209
1210 req->qtcb->bottom.config.feature_selection =
1211 FSF_FEATURE_NOTIFICATION_LOST |
1212 FSF_FEATURE_UPDATE_ALERT;
1213 req->erp_action = erp_action;
1214 req->handler = zfcp_fsf_exchange_config_data_handler;
1215 erp_action->fsf_req_id = req->req_id;
1216
1217 zfcp_fsf_start_erp_timer(req);
1218 retval = zfcp_fsf_req_send(req);
1219 if (retval) {
1220 zfcp_fsf_req_free(req);
1221 erp_action->fsf_req_id = 0;
1222 }
1223out:
1224 spin_unlock_irq(&qdio->req_q_lock);
1225 return retval;
1226}
1227
1228int zfcp_fsf_exchange_config_data_sync(struct zfcp_qdio *qdio,
1229 struct fsf_qtcb_bottom_config *data)
1230{
1231 struct zfcp_fsf_req *req = NULL;
1232 int retval = -EIO;
1233
1234 spin_lock_irq(&qdio->req_q_lock);
1235 if (zfcp_qdio_sbal_get(qdio))
1236 goto out_unlock;
1237
1238 req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_CONFIG_DATA,
1239 SBAL_SFLAGS0_TYPE_READ, NULL);
1240
1241 if (IS_ERR(req)) {
1242 retval = PTR_ERR(req);
1243 goto out_unlock;
1244 }
1245
1246 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1247 req->handler = zfcp_fsf_exchange_config_data_handler;
1248
1249 req->qtcb->bottom.config.feature_selection =
1250 FSF_FEATURE_NOTIFICATION_LOST |
1251 FSF_FEATURE_UPDATE_ALERT;
1252
1253 if (data)
1254 req->data = data;
1255
1256 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1257 retval = zfcp_fsf_req_send(req);
1258 spin_unlock_irq(&qdio->req_q_lock);
1259 if (!retval)
1260 wait_for_completion(&req->completion);
1261
1262 zfcp_fsf_req_free(req);
1263 return retval;
1264
1265out_unlock:
1266 spin_unlock_irq(&qdio->req_q_lock);
1267 return retval;
1268}
1269
1270
1271
1272
1273
1274
1275int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action)
1276{
1277 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1278 struct zfcp_fsf_req *req;
1279 int retval = -EIO;
1280
1281 if (!(qdio->adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT))
1282 return -EOPNOTSUPP;
1283
1284 spin_lock_irq(&qdio->req_q_lock);
1285 if (zfcp_qdio_sbal_get(qdio))
1286 goto out;
1287
1288 req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_PORT_DATA,
1289 SBAL_SFLAGS0_TYPE_READ,
1290 qdio->adapter->pool.erp_req);
1291
1292 if (IS_ERR(req)) {
1293 retval = PTR_ERR(req);
1294 goto out;
1295 }
1296
1297 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1298 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1299
1300 req->handler = zfcp_fsf_exchange_port_data_handler;
1301 req->erp_action = erp_action;
1302 erp_action->fsf_req_id = req->req_id;
1303
1304 zfcp_fsf_start_erp_timer(req);
1305 retval = zfcp_fsf_req_send(req);
1306 if (retval) {
1307 zfcp_fsf_req_free(req);
1308 erp_action->fsf_req_id = 0;
1309 }
1310out:
1311 spin_unlock_irq(&qdio->req_q_lock);
1312 return retval;
1313}
1314
1315
1316
1317
1318
1319
1320
1321int zfcp_fsf_exchange_port_data_sync(struct zfcp_qdio *qdio,
1322 struct fsf_qtcb_bottom_port *data)
1323{
1324 struct zfcp_fsf_req *req = NULL;
1325 int retval = -EIO;
1326
1327 if (!(qdio->adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT))
1328 return -EOPNOTSUPP;
1329
1330 spin_lock_irq(&qdio->req_q_lock);
1331 if (zfcp_qdio_sbal_get(qdio))
1332 goto out_unlock;
1333
1334 req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_PORT_DATA,
1335 SBAL_SFLAGS0_TYPE_READ, NULL);
1336
1337 if (IS_ERR(req)) {
1338 retval = PTR_ERR(req);
1339 goto out_unlock;
1340 }
1341
1342 if (data)
1343 req->data = data;
1344
1345 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1346
1347 req->handler = zfcp_fsf_exchange_port_data_handler;
1348 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1349 retval = zfcp_fsf_req_send(req);
1350 spin_unlock_irq(&qdio->req_q_lock);
1351
1352 if (!retval)
1353 wait_for_completion(&req->completion);
1354
1355 zfcp_fsf_req_free(req);
1356
1357 return retval;
1358
1359out_unlock:
1360 spin_unlock_irq(&qdio->req_q_lock);
1361 return retval;
1362}
1363
1364static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req *req)
1365{
1366 struct zfcp_port *port = req->data;
1367 struct fsf_qtcb_header *header = &req->qtcb->header;
1368 struct fc_els_flogi *plogi;
1369
1370 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1371 goto out;
1372
1373 switch (header->fsf_status) {
1374 case FSF_PORT_ALREADY_OPEN:
1375 break;
1376 case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED:
1377 dev_warn(&req->adapter->ccw_device->dev,
1378 "Not enough FCP adapter resources to open "
1379 "remote port 0x%016Lx\n",
1380 (unsigned long long)port->wwpn);
1381 zfcp_erp_set_port_status(port,
1382 ZFCP_STATUS_COMMON_ERP_FAILED);
1383 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1384 break;
1385 case FSF_ADAPTER_STATUS_AVAILABLE:
1386 switch (header->fsf_status_qual.word[0]) {
1387 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1388 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1389 case FSF_SQ_NO_RETRY_POSSIBLE:
1390 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1391 break;
1392 }
1393 break;
1394 case FSF_GOOD:
1395 port->handle = header->port_handle;
1396 atomic_set_mask(ZFCP_STATUS_COMMON_OPEN |
1397 ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
1398 atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED |
1399 ZFCP_STATUS_COMMON_ACCESS_BOXED,
1400 &port->status);
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416 plogi = (struct fc_els_flogi *) req->qtcb->bottom.support.els;
1417 if (req->qtcb->bottom.support.els1_length >=
1418 FSF_PLOGI_MIN_LEN)
1419 zfcp_fc_plogi_evaluate(port, plogi);
1420 break;
1421 case FSF_UNKNOWN_OP_SUBTYPE:
1422 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1423 break;
1424 }
1425
1426out:
1427 put_device(&port->dev);
1428}
1429
1430
1431
1432
1433
1434
1435int zfcp_fsf_open_port(struct zfcp_erp_action *erp_action)
1436{
1437 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1438 struct zfcp_port *port = erp_action->port;
1439 struct zfcp_fsf_req *req;
1440 int retval = -EIO;
1441
1442 spin_lock_irq(&qdio->req_q_lock);
1443 if (zfcp_qdio_sbal_get(qdio))
1444 goto out;
1445
1446 req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_PORT_WITH_DID,
1447 SBAL_SFLAGS0_TYPE_READ,
1448 qdio->adapter->pool.erp_req);
1449
1450 if (IS_ERR(req)) {
1451 retval = PTR_ERR(req);
1452 goto out;
1453 }
1454
1455 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1456 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1457
1458 req->handler = zfcp_fsf_open_port_handler;
1459 hton24(req->qtcb->bottom.support.d_id, port->d_id);
1460 req->data = port;
1461 req->erp_action = erp_action;
1462 erp_action->fsf_req_id = req->req_id;
1463 get_device(&port->dev);
1464
1465 zfcp_fsf_start_erp_timer(req);
1466 retval = zfcp_fsf_req_send(req);
1467 if (retval) {
1468 zfcp_fsf_req_free(req);
1469 erp_action->fsf_req_id = 0;
1470 put_device(&port->dev);
1471 }
1472out:
1473 spin_unlock_irq(&qdio->req_q_lock);
1474 return retval;
1475}
1476
1477static void zfcp_fsf_close_port_handler(struct zfcp_fsf_req *req)
1478{
1479 struct zfcp_port *port = req->data;
1480
1481 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1482 return;
1483
1484 switch (req->qtcb->header.fsf_status) {
1485 case FSF_PORT_HANDLE_NOT_VALID:
1486 zfcp_erp_adapter_reopen(port->adapter, 0, "fscph_1");
1487 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1488 break;
1489 case FSF_ADAPTER_STATUS_AVAILABLE:
1490 break;
1491 case FSF_GOOD:
1492 zfcp_erp_clear_port_status(port, ZFCP_STATUS_COMMON_OPEN);
1493 break;
1494 }
1495}
1496
1497
1498
1499
1500
1501
1502int zfcp_fsf_close_port(struct zfcp_erp_action *erp_action)
1503{
1504 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1505 struct zfcp_fsf_req *req;
1506 int retval = -EIO;
1507
1508 spin_lock_irq(&qdio->req_q_lock);
1509 if (zfcp_qdio_sbal_get(qdio))
1510 goto out;
1511
1512 req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PORT,
1513 SBAL_SFLAGS0_TYPE_READ,
1514 qdio->adapter->pool.erp_req);
1515
1516 if (IS_ERR(req)) {
1517 retval = PTR_ERR(req);
1518 goto out;
1519 }
1520
1521 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1522 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1523
1524 req->handler = zfcp_fsf_close_port_handler;
1525 req->data = erp_action->port;
1526 req->erp_action = erp_action;
1527 req->qtcb->header.port_handle = erp_action->port->handle;
1528 erp_action->fsf_req_id = req->req_id;
1529
1530 zfcp_fsf_start_erp_timer(req);
1531 retval = zfcp_fsf_req_send(req);
1532 if (retval) {
1533 zfcp_fsf_req_free(req);
1534 erp_action->fsf_req_id = 0;
1535 }
1536out:
1537 spin_unlock_irq(&qdio->req_q_lock);
1538 return retval;
1539}
1540
1541static void zfcp_fsf_open_wka_port_handler(struct zfcp_fsf_req *req)
1542{
1543 struct zfcp_fc_wka_port *wka_port = req->data;
1544 struct fsf_qtcb_header *header = &req->qtcb->header;
1545
1546 if (req->status & ZFCP_STATUS_FSFREQ_ERROR) {
1547 wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE;
1548 goto out;
1549 }
1550
1551 switch (header->fsf_status) {
1552 case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED:
1553 dev_warn(&req->adapter->ccw_device->dev,
1554 "Opening WKA port 0x%x failed\n", wka_port->d_id);
1555
1556 case FSF_ADAPTER_STATUS_AVAILABLE:
1557 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1558 wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE;
1559 break;
1560 case FSF_GOOD:
1561 wka_port->handle = header->port_handle;
1562
1563 case FSF_PORT_ALREADY_OPEN:
1564 wka_port->status = ZFCP_FC_WKA_PORT_ONLINE;
1565 }
1566out:
1567 wake_up(&wka_port->completion_wq);
1568}
1569
1570
1571
1572
1573
1574
1575int zfcp_fsf_open_wka_port(struct zfcp_fc_wka_port *wka_port)
1576{
1577 struct zfcp_qdio *qdio = wka_port->adapter->qdio;
1578 struct zfcp_fsf_req *req;
1579 int retval = -EIO;
1580
1581 spin_lock_irq(&qdio->req_q_lock);
1582 if (zfcp_qdio_sbal_get(qdio))
1583 goto out;
1584
1585 req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_PORT_WITH_DID,
1586 SBAL_SFLAGS0_TYPE_READ,
1587 qdio->adapter->pool.erp_req);
1588
1589 if (IS_ERR(req)) {
1590 retval = PTR_ERR(req);
1591 goto out;
1592 }
1593
1594 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1595 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1596
1597 req->handler = zfcp_fsf_open_wka_port_handler;
1598 hton24(req->qtcb->bottom.support.d_id, wka_port->d_id);
1599 req->data = wka_port;
1600
1601 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1602 retval = zfcp_fsf_req_send(req);
1603 if (retval)
1604 zfcp_fsf_req_free(req);
1605out:
1606 spin_unlock_irq(&qdio->req_q_lock);
1607 return retval;
1608}
1609
1610static void zfcp_fsf_close_wka_port_handler(struct zfcp_fsf_req *req)
1611{
1612 struct zfcp_fc_wka_port *wka_port = req->data;
1613
1614 if (req->qtcb->header.fsf_status == FSF_PORT_HANDLE_NOT_VALID) {
1615 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1616 zfcp_erp_adapter_reopen(wka_port->adapter, 0, "fscwph1");
1617 }
1618
1619 wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE;
1620 wake_up(&wka_port->completion_wq);
1621}
1622
1623
1624
1625
1626
1627
1628int zfcp_fsf_close_wka_port(struct zfcp_fc_wka_port *wka_port)
1629{
1630 struct zfcp_qdio *qdio = wka_port->adapter->qdio;
1631 struct zfcp_fsf_req *req;
1632 int retval = -EIO;
1633
1634 spin_lock_irq(&qdio->req_q_lock);
1635 if (zfcp_qdio_sbal_get(qdio))
1636 goto out;
1637
1638 req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PORT,
1639 SBAL_SFLAGS0_TYPE_READ,
1640 qdio->adapter->pool.erp_req);
1641
1642 if (IS_ERR(req)) {
1643 retval = PTR_ERR(req);
1644 goto out;
1645 }
1646
1647 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1648 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1649
1650 req->handler = zfcp_fsf_close_wka_port_handler;
1651 req->data = wka_port;
1652 req->qtcb->header.port_handle = wka_port->handle;
1653
1654 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1655 retval = zfcp_fsf_req_send(req);
1656 if (retval)
1657 zfcp_fsf_req_free(req);
1658out:
1659 spin_unlock_irq(&qdio->req_q_lock);
1660 return retval;
1661}
1662
1663static void zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *req)
1664{
1665 struct zfcp_port *port = req->data;
1666 struct fsf_qtcb_header *header = &req->qtcb->header;
1667 struct scsi_device *sdev;
1668
1669 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1670 return;
1671
1672 switch (header->fsf_status) {
1673 case FSF_PORT_HANDLE_NOT_VALID:
1674 zfcp_erp_adapter_reopen(port->adapter, 0, "fscpph1");
1675 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1676 break;
1677 case FSF_PORT_BOXED:
1678
1679
1680 atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
1681 shost_for_each_device(sdev, port->adapter->scsi_host)
1682 if (sdev_to_zfcp(sdev)->port == port)
1683 atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN,
1684 &sdev_to_zfcp(sdev)->status);
1685 zfcp_erp_set_port_status(port, ZFCP_STATUS_COMMON_ACCESS_BOXED);
1686 zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED,
1687 "fscpph2");
1688 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1689 break;
1690 case FSF_ADAPTER_STATUS_AVAILABLE:
1691 switch (header->fsf_status_qual.word[0]) {
1692 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1693
1694 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1695 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1696 break;
1697 }
1698 break;
1699 case FSF_GOOD:
1700
1701
1702
1703 atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
1704 shost_for_each_device(sdev, port->adapter->scsi_host)
1705 if (sdev_to_zfcp(sdev)->port == port)
1706 atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN,
1707 &sdev_to_zfcp(sdev)->status);
1708 break;
1709 }
1710}
1711
1712
1713
1714
1715
1716
1717int zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action)
1718{
1719 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1720 struct zfcp_fsf_req *req;
1721 int retval = -EIO;
1722
1723 spin_lock_irq(&qdio->req_q_lock);
1724 if (zfcp_qdio_sbal_get(qdio))
1725 goto out;
1726
1727 req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PHYSICAL_PORT,
1728 SBAL_SFLAGS0_TYPE_READ,
1729 qdio->adapter->pool.erp_req);
1730
1731 if (IS_ERR(req)) {
1732 retval = PTR_ERR(req);
1733 goto out;
1734 }
1735
1736 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1737 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1738
1739 req->data = erp_action->port;
1740 req->qtcb->header.port_handle = erp_action->port->handle;
1741 req->erp_action = erp_action;
1742 req->handler = zfcp_fsf_close_physical_port_handler;
1743 erp_action->fsf_req_id = req->req_id;
1744
1745 zfcp_fsf_start_erp_timer(req);
1746 retval = zfcp_fsf_req_send(req);
1747 if (retval) {
1748 zfcp_fsf_req_free(req);
1749 erp_action->fsf_req_id = 0;
1750 }
1751out:
1752 spin_unlock_irq(&qdio->req_q_lock);
1753 return retval;
1754}
1755
1756static void zfcp_fsf_open_lun_handler(struct zfcp_fsf_req *req)
1757{
1758 struct zfcp_adapter *adapter = req->adapter;
1759 struct scsi_device *sdev = req->data;
1760 struct zfcp_scsi_dev *zfcp_sdev;
1761 struct fsf_qtcb_header *header = &req->qtcb->header;
1762 union fsf_status_qual *qual = &header->fsf_status_qual;
1763
1764 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1765 return;
1766
1767 zfcp_sdev = sdev_to_zfcp(sdev);
1768
1769 atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED |
1770 ZFCP_STATUS_COMMON_ACCESS_BOXED,
1771 &zfcp_sdev->status);
1772
1773 switch (header->fsf_status) {
1774
1775 case FSF_PORT_HANDLE_NOT_VALID:
1776 zfcp_erp_adapter_reopen(adapter, 0, "fsouh_1");
1777
1778 case FSF_LUN_ALREADY_OPEN:
1779 break;
1780 case FSF_PORT_BOXED:
1781 zfcp_erp_set_port_status(zfcp_sdev->port,
1782 ZFCP_STATUS_COMMON_ACCESS_BOXED);
1783 zfcp_erp_port_reopen(zfcp_sdev->port,
1784 ZFCP_STATUS_COMMON_ERP_FAILED, "fsouh_2");
1785 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1786 break;
1787 case FSF_LUN_SHARING_VIOLATION:
1788 if (qual->word[0])
1789 dev_warn(&zfcp_sdev->port->adapter->ccw_device->dev,
1790 "LUN 0x%Lx on port 0x%Lx is already in "
1791 "use by CSS%d, MIF Image ID %x\n",
1792 zfcp_scsi_dev_lun(sdev),
1793 (unsigned long long)zfcp_sdev->port->wwpn,
1794 qual->fsf_queue_designator.cssid,
1795 qual->fsf_queue_designator.hla);
1796 zfcp_erp_set_lun_status(sdev,
1797 ZFCP_STATUS_COMMON_ERP_FAILED |
1798 ZFCP_STATUS_COMMON_ACCESS_DENIED);
1799 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1800 break;
1801 case FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED:
1802 dev_warn(&adapter->ccw_device->dev,
1803 "No handle is available for LUN "
1804 "0x%016Lx on port 0x%016Lx\n",
1805 (unsigned long long)zfcp_scsi_dev_lun(sdev),
1806 (unsigned long long)zfcp_sdev->port->wwpn);
1807 zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_ERP_FAILED);
1808
1809 case FSF_INVALID_COMMAND_OPTION:
1810 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1811 break;
1812 case FSF_ADAPTER_STATUS_AVAILABLE:
1813 switch (header->fsf_status_qual.word[0]) {
1814 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1815 zfcp_fc_test_link(zfcp_sdev->port);
1816
1817 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1818 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1819 break;
1820 }
1821 break;
1822
1823 case FSF_GOOD:
1824 zfcp_sdev->lun_handle = header->lun_handle;
1825 atomic_set_mask(ZFCP_STATUS_COMMON_OPEN, &zfcp_sdev->status);
1826 break;
1827 }
1828}
1829
1830
1831
1832
1833
1834
1835int zfcp_fsf_open_lun(struct zfcp_erp_action *erp_action)
1836{
1837 struct zfcp_adapter *adapter = erp_action->adapter;
1838 struct zfcp_qdio *qdio = adapter->qdio;
1839 struct zfcp_fsf_req *req;
1840 int retval = -EIO;
1841
1842 spin_lock_irq(&qdio->req_q_lock);
1843 if (zfcp_qdio_sbal_get(qdio))
1844 goto out;
1845
1846 req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_LUN,
1847 SBAL_SFLAGS0_TYPE_READ,
1848 adapter->pool.erp_req);
1849
1850 if (IS_ERR(req)) {
1851 retval = PTR_ERR(req);
1852 goto out;
1853 }
1854
1855 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1856 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1857
1858 req->qtcb->header.port_handle = erp_action->port->handle;
1859 req->qtcb->bottom.support.fcp_lun = zfcp_scsi_dev_lun(erp_action->sdev);
1860 req->handler = zfcp_fsf_open_lun_handler;
1861 req->data = erp_action->sdev;
1862 req->erp_action = erp_action;
1863 erp_action->fsf_req_id = req->req_id;
1864
1865 if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE))
1866 req->qtcb->bottom.support.option = FSF_OPEN_LUN_SUPPRESS_BOXING;
1867
1868 zfcp_fsf_start_erp_timer(req);
1869 retval = zfcp_fsf_req_send(req);
1870 if (retval) {
1871 zfcp_fsf_req_free(req);
1872 erp_action->fsf_req_id = 0;
1873 }
1874out:
1875 spin_unlock_irq(&qdio->req_q_lock);
1876 return retval;
1877}
1878
1879static void zfcp_fsf_close_lun_handler(struct zfcp_fsf_req *req)
1880{
1881 struct scsi_device *sdev = req->data;
1882 struct zfcp_scsi_dev *zfcp_sdev;
1883
1884 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1885 return;
1886
1887 zfcp_sdev = sdev_to_zfcp(sdev);
1888
1889 switch (req->qtcb->header.fsf_status) {
1890 case FSF_PORT_HANDLE_NOT_VALID:
1891 zfcp_erp_adapter_reopen(zfcp_sdev->port->adapter, 0, "fscuh_1");
1892 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1893 break;
1894 case FSF_LUN_HANDLE_NOT_VALID:
1895 zfcp_erp_port_reopen(zfcp_sdev->port, 0, "fscuh_2");
1896 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1897 break;
1898 case FSF_PORT_BOXED:
1899 zfcp_erp_set_port_status(zfcp_sdev->port,
1900 ZFCP_STATUS_COMMON_ACCESS_BOXED);
1901 zfcp_erp_port_reopen(zfcp_sdev->port,
1902 ZFCP_STATUS_COMMON_ERP_FAILED, "fscuh_3");
1903 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1904 break;
1905 case FSF_ADAPTER_STATUS_AVAILABLE:
1906 switch (req->qtcb->header.fsf_status_qual.word[0]) {
1907 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1908 zfcp_fc_test_link(zfcp_sdev->port);
1909
1910 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1911 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1912 break;
1913 }
1914 break;
1915 case FSF_GOOD:
1916 atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, &zfcp_sdev->status);
1917 break;
1918 }
1919}
1920
1921
1922
1923
1924
1925
1926int zfcp_fsf_close_lun(struct zfcp_erp_action *erp_action)
1927{
1928 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1929 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(erp_action->sdev);
1930 struct zfcp_fsf_req *req;
1931 int retval = -EIO;
1932
1933 spin_lock_irq(&qdio->req_q_lock);
1934 if (zfcp_qdio_sbal_get(qdio))
1935 goto out;
1936
1937 req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_LUN,
1938 SBAL_SFLAGS0_TYPE_READ,
1939 qdio->adapter->pool.erp_req);
1940
1941 if (IS_ERR(req)) {
1942 retval = PTR_ERR(req);
1943 goto out;
1944 }
1945
1946 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1947 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1948
1949 req->qtcb->header.port_handle = erp_action->port->handle;
1950 req->qtcb->header.lun_handle = zfcp_sdev->lun_handle;
1951 req->handler = zfcp_fsf_close_lun_handler;
1952 req->data = erp_action->sdev;
1953 req->erp_action = erp_action;
1954 erp_action->fsf_req_id = req->req_id;
1955
1956 zfcp_fsf_start_erp_timer(req);
1957 retval = zfcp_fsf_req_send(req);
1958 if (retval) {
1959 zfcp_fsf_req_free(req);
1960 erp_action->fsf_req_id = 0;
1961 }
1962out:
1963 spin_unlock_irq(&qdio->req_q_lock);
1964 return retval;
1965}
1966
1967static void zfcp_fsf_update_lat(struct fsf_latency_record *lat_rec, u32 lat)
1968{
1969 lat_rec->sum += lat;
1970 lat_rec->min = min(lat_rec->min, lat);
1971 lat_rec->max = max(lat_rec->max, lat);
1972}
1973
1974static void zfcp_fsf_req_trace(struct zfcp_fsf_req *req, struct scsi_cmnd *scsi)
1975{
1976 struct fsf_qual_latency_info *lat_in;
1977 struct latency_cont *lat = NULL;
1978 struct zfcp_scsi_dev *zfcp_sdev;
1979 struct zfcp_blk_drv_data blktrc;
1980 int ticks = req->adapter->timer_ticks;
1981
1982 lat_in = &req->qtcb->prefix.prot_status_qual.latency_info;
1983
1984 blktrc.flags = 0;
1985 blktrc.magic = ZFCP_BLK_DRV_DATA_MAGIC;
1986 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1987 blktrc.flags |= ZFCP_BLK_REQ_ERROR;
1988 blktrc.inb_usage = 0;
1989 blktrc.outb_usage = req->qdio_req.qdio_outb_usage;
1990
1991 if (req->adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA &&
1992 !(req->status & ZFCP_STATUS_FSFREQ_ERROR)) {
1993 zfcp_sdev = sdev_to_zfcp(scsi->device);
1994 blktrc.flags |= ZFCP_BLK_LAT_VALID;
1995 blktrc.channel_lat = lat_in->channel_lat * ticks;
1996 blktrc.fabric_lat = lat_in->fabric_lat * ticks;
1997
1998 switch (req->qtcb->bottom.io.data_direction) {
1999 case FSF_DATADIR_DIF_READ_STRIP:
2000 case FSF_DATADIR_DIF_READ_CONVERT:
2001 case FSF_DATADIR_READ:
2002 lat = &zfcp_sdev->latencies.read;
2003 break;
2004 case FSF_DATADIR_DIF_WRITE_INSERT:
2005 case FSF_DATADIR_DIF_WRITE_CONVERT:
2006 case FSF_DATADIR_WRITE:
2007 lat = &zfcp_sdev->latencies.write;
2008 break;
2009 case FSF_DATADIR_CMND:
2010 lat = &zfcp_sdev->latencies.cmd;
2011 break;
2012 }
2013
2014 if (lat) {
2015 spin_lock(&zfcp_sdev->latencies.lock);
2016 zfcp_fsf_update_lat(&lat->channel, lat_in->channel_lat);
2017 zfcp_fsf_update_lat(&lat->fabric, lat_in->fabric_lat);
2018 lat->counter++;
2019 spin_unlock(&zfcp_sdev->latencies.lock);
2020 }
2021 }
2022
2023 blk_add_driver_data(scsi->request->q, scsi->request, &blktrc,
2024 sizeof(blktrc));
2025}
2026
2027static void zfcp_fsf_fcp_handler_common(struct zfcp_fsf_req *req)
2028{
2029 struct scsi_cmnd *scmnd = req->data;
2030 struct scsi_device *sdev = scmnd->device;
2031 struct zfcp_scsi_dev *zfcp_sdev;
2032 struct fsf_qtcb_header *header = &req->qtcb->header;
2033
2034 if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR))
2035 return;
2036
2037 zfcp_sdev = sdev_to_zfcp(sdev);
2038
2039 switch (header->fsf_status) {
2040 case FSF_HANDLE_MISMATCH:
2041 case FSF_PORT_HANDLE_NOT_VALID:
2042 zfcp_erp_adapter_reopen(zfcp_sdev->port->adapter, 0, "fssfch1");
2043 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2044 break;
2045 case FSF_FCPLUN_NOT_VALID:
2046 case FSF_LUN_HANDLE_NOT_VALID:
2047 zfcp_erp_port_reopen(zfcp_sdev->port, 0, "fssfch2");
2048 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2049 break;
2050 case FSF_SERVICE_CLASS_NOT_SUPPORTED:
2051 zfcp_fsf_class_not_supp(req);
2052 break;
2053 case FSF_DIRECTION_INDICATOR_NOT_VALID:
2054 dev_err(&req->adapter->ccw_device->dev,
2055 "Incorrect direction %d, LUN 0x%016Lx on port "
2056 "0x%016Lx closed\n",
2057 req->qtcb->bottom.io.data_direction,
2058 (unsigned long long)zfcp_scsi_dev_lun(sdev),
2059 (unsigned long long)zfcp_sdev->port->wwpn);
2060 zfcp_erp_adapter_shutdown(zfcp_sdev->port->adapter, 0,
2061 "fssfch3");
2062 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2063 break;
2064 case FSF_CMND_LENGTH_NOT_VALID:
2065 dev_err(&req->adapter->ccw_device->dev,
2066 "Incorrect CDB length %d, LUN 0x%016Lx on "
2067 "port 0x%016Lx closed\n",
2068 req->qtcb->bottom.io.fcp_cmnd_length,
2069 (unsigned long long)zfcp_scsi_dev_lun(sdev),
2070 (unsigned long long)zfcp_sdev->port->wwpn);
2071 zfcp_erp_adapter_shutdown(zfcp_sdev->port->adapter, 0,
2072 "fssfch4");
2073 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2074 break;
2075 case FSF_PORT_BOXED:
2076 zfcp_erp_set_port_status(zfcp_sdev->port,
2077 ZFCP_STATUS_COMMON_ACCESS_BOXED);
2078 zfcp_erp_port_reopen(zfcp_sdev->port,
2079 ZFCP_STATUS_COMMON_ERP_FAILED, "fssfch5");
2080 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2081 break;
2082 case FSF_LUN_BOXED:
2083 zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_ACCESS_BOXED);
2084 zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED,
2085 "fssfch6");
2086 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2087 break;
2088 case FSF_ADAPTER_STATUS_AVAILABLE:
2089 if (header->fsf_status_qual.word[0] ==
2090 FSF_SQ_INVOKE_LINK_TEST_PROCEDURE)
2091 zfcp_fc_test_link(zfcp_sdev->port);
2092 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2093 break;
2094 }
2095}
2096
2097static void zfcp_fsf_fcp_cmnd_handler(struct zfcp_fsf_req *req)
2098{
2099 struct scsi_cmnd *scpnt;
2100 struct fcp_resp_with_ext *fcp_rsp;
2101 unsigned long flags;
2102
2103 read_lock_irqsave(&req->adapter->abort_lock, flags);
2104
2105 scpnt = req->data;
2106 if (unlikely(!scpnt)) {
2107 read_unlock_irqrestore(&req->adapter->abort_lock, flags);
2108 return;
2109 }
2110
2111 zfcp_fsf_fcp_handler_common(req);
2112
2113 if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) {
2114 set_host_byte(scpnt, DID_TRANSPORT_DISRUPTED);
2115 goto skip_fsfstatus;
2116 }
2117
2118 switch (req->qtcb->header.fsf_status) {
2119 case FSF_INCONSISTENT_PROT_DATA:
2120 case FSF_INVALID_PROT_PARM:
2121 set_host_byte(scpnt, DID_ERROR);
2122 goto skip_fsfstatus;
2123 case FSF_BLOCK_GUARD_CHECK_FAILURE:
2124 zfcp_scsi_dif_sense_error(scpnt, 0x1);
2125 goto skip_fsfstatus;
2126 case FSF_APP_TAG_CHECK_FAILURE:
2127 zfcp_scsi_dif_sense_error(scpnt, 0x2);
2128 goto skip_fsfstatus;
2129 case FSF_REF_TAG_CHECK_FAILURE:
2130 zfcp_scsi_dif_sense_error(scpnt, 0x3);
2131 goto skip_fsfstatus;
2132 }
2133 fcp_rsp = (struct fcp_resp_with_ext *) &req->qtcb->bottom.io.fcp_rsp;
2134 zfcp_fc_eval_fcp_rsp(fcp_rsp, scpnt);
2135
2136skip_fsfstatus:
2137 zfcp_fsf_req_trace(req, scpnt);
2138 zfcp_dbf_scsi_result(scpnt, req);
2139
2140 scpnt->host_scribble = NULL;
2141 (scpnt->scsi_done) (scpnt);
2142
2143
2144
2145
2146
2147
2148 read_unlock_irqrestore(&req->adapter->abort_lock, flags);
2149}
2150
2151static int zfcp_fsf_set_data_dir(struct scsi_cmnd *scsi_cmnd, u32 *data_dir)
2152{
2153 switch (scsi_get_prot_op(scsi_cmnd)) {
2154 case SCSI_PROT_NORMAL:
2155 switch (scsi_cmnd->sc_data_direction) {
2156 case DMA_NONE:
2157 *data_dir = FSF_DATADIR_CMND;
2158 break;
2159 case DMA_FROM_DEVICE:
2160 *data_dir = FSF_DATADIR_READ;
2161 break;
2162 case DMA_TO_DEVICE:
2163 *data_dir = FSF_DATADIR_WRITE;
2164 break;
2165 case DMA_BIDIRECTIONAL:
2166 return -EINVAL;
2167 }
2168 break;
2169
2170 case SCSI_PROT_READ_STRIP:
2171 *data_dir = FSF_DATADIR_DIF_READ_STRIP;
2172 break;
2173 case SCSI_PROT_WRITE_INSERT:
2174 *data_dir = FSF_DATADIR_DIF_WRITE_INSERT;
2175 break;
2176 case SCSI_PROT_READ_PASS:
2177 *data_dir = FSF_DATADIR_DIF_READ_CONVERT;
2178 break;
2179 case SCSI_PROT_WRITE_PASS:
2180 *data_dir = FSF_DATADIR_DIF_WRITE_CONVERT;
2181 break;
2182 default:
2183 return -EINVAL;
2184 }
2185
2186 return 0;
2187}
2188
2189
2190
2191
2192
2193int zfcp_fsf_fcp_cmnd(struct scsi_cmnd *scsi_cmnd)
2194{
2195 struct zfcp_fsf_req *req;
2196 struct fcp_cmnd *fcp_cmnd;
2197 u8 sbtype = SBAL_SFLAGS0_TYPE_READ;
2198 int retval = -EIO;
2199 struct scsi_device *sdev = scsi_cmnd->device;
2200 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
2201 struct zfcp_adapter *adapter = zfcp_sdev->port->adapter;
2202 struct zfcp_qdio *qdio = adapter->qdio;
2203 struct fsf_qtcb_bottom_io *io;
2204 unsigned long flags;
2205
2206 if (unlikely(!(atomic_read(&zfcp_sdev->status) &
2207 ZFCP_STATUS_COMMON_UNBLOCKED)))
2208 return -EBUSY;
2209
2210 spin_lock_irqsave(&qdio->req_q_lock, flags);
2211 if (atomic_read(&qdio->req_q_free) <= 0) {
2212 atomic_inc(&qdio->req_q_full);
2213 goto out;
2214 }
2215
2216 if (scsi_cmnd->sc_data_direction == DMA_TO_DEVICE)
2217 sbtype = SBAL_SFLAGS0_TYPE_WRITE;
2218
2219 req = zfcp_fsf_req_create(qdio, FSF_QTCB_FCP_CMND,
2220 sbtype, adapter->pool.scsi_req);
2221
2222 if (IS_ERR(req)) {
2223 retval = PTR_ERR(req);
2224 goto out;
2225 }
2226
2227 scsi_cmnd->host_scribble = (unsigned char *) req->req_id;
2228
2229 io = &req->qtcb->bottom.io;
2230 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
2231 req->data = scsi_cmnd;
2232 req->handler = zfcp_fsf_fcp_cmnd_handler;
2233 req->qtcb->header.lun_handle = zfcp_sdev->lun_handle;
2234 req->qtcb->header.port_handle = zfcp_sdev->port->handle;
2235 io->service_class = FSF_CLASS_3;
2236 io->fcp_cmnd_length = FCP_CMND_LEN;
2237
2238 if (scsi_get_prot_op(scsi_cmnd) != SCSI_PROT_NORMAL) {
2239 io->data_block_length = scsi_cmnd->device->sector_size;
2240 io->ref_tag_value = scsi_get_lba(scsi_cmnd) & 0xFFFFFFFF;
2241 }
2242
2243 if (zfcp_fsf_set_data_dir(scsi_cmnd, &io->data_direction))
2244 goto failed_scsi_cmnd;
2245
2246 fcp_cmnd = (struct fcp_cmnd *) &req->qtcb->bottom.io.fcp_cmnd;
2247 zfcp_fc_scsi_to_fcp(fcp_cmnd, scsi_cmnd, 0);
2248
2249 if (scsi_prot_sg_count(scsi_cmnd)) {
2250 zfcp_qdio_set_data_div(qdio, &req->qdio_req,
2251 scsi_prot_sg_count(scsi_cmnd));
2252 retval = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req,
2253 scsi_prot_sglist(scsi_cmnd));
2254 if (retval)
2255 goto failed_scsi_cmnd;
2256 io->prot_data_length = zfcp_qdio_real_bytes(
2257 scsi_prot_sglist(scsi_cmnd));
2258 }
2259
2260 retval = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req,
2261 scsi_sglist(scsi_cmnd));
2262 if (unlikely(retval))
2263 goto failed_scsi_cmnd;
2264
2265 zfcp_qdio_set_sbale_last(adapter->qdio, &req->qdio_req);
2266 if (zfcp_adapter_multi_buffer_active(adapter))
2267 zfcp_qdio_set_scount(qdio, &req->qdio_req);
2268
2269 retval = zfcp_fsf_req_send(req);
2270 if (unlikely(retval))
2271 goto failed_scsi_cmnd;
2272
2273 goto out;
2274
2275failed_scsi_cmnd:
2276 zfcp_fsf_req_free(req);
2277 scsi_cmnd->host_scribble = NULL;
2278out:
2279 spin_unlock_irqrestore(&qdio->req_q_lock, flags);
2280 return retval;
2281}
2282
2283static void zfcp_fsf_fcp_task_mgmt_handler(struct zfcp_fsf_req *req)
2284{
2285 struct fcp_resp_with_ext *fcp_rsp;
2286 struct fcp_resp_rsp_info *rsp_info;
2287
2288 zfcp_fsf_fcp_handler_common(req);
2289
2290 fcp_rsp = (struct fcp_resp_with_ext *) &req->qtcb->bottom.io.fcp_rsp;
2291 rsp_info = (struct fcp_resp_rsp_info *) &fcp_rsp[1];
2292
2293 if ((rsp_info->rsp_code != FCP_TMF_CMPL) ||
2294 (req->status & ZFCP_STATUS_FSFREQ_ERROR))
2295 req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED;
2296}
2297
2298
2299
2300
2301
2302
2303
2304struct zfcp_fsf_req *zfcp_fsf_fcp_task_mgmt(struct scsi_cmnd *scmnd,
2305 u8 tm_flags)
2306{
2307 struct zfcp_fsf_req *req = NULL;
2308 struct fcp_cmnd *fcp_cmnd;
2309 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scmnd->device);
2310 struct zfcp_qdio *qdio = zfcp_sdev->port->adapter->qdio;
2311
2312 if (unlikely(!(atomic_read(&zfcp_sdev->status) &
2313 ZFCP_STATUS_COMMON_UNBLOCKED)))
2314 return NULL;
2315
2316 spin_lock_irq(&qdio->req_q_lock);
2317 if (zfcp_qdio_sbal_get(qdio))
2318 goto out;
2319
2320 req = zfcp_fsf_req_create(qdio, FSF_QTCB_FCP_CMND,
2321 SBAL_SFLAGS0_TYPE_WRITE,
2322 qdio->adapter->pool.scsi_req);
2323
2324 if (IS_ERR(req)) {
2325 req = NULL;
2326 goto out;
2327 }
2328
2329 req->data = scmnd;
2330 req->handler = zfcp_fsf_fcp_task_mgmt_handler;
2331 req->qtcb->header.lun_handle = zfcp_sdev->lun_handle;
2332 req->qtcb->header.port_handle = zfcp_sdev->port->handle;
2333 req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND;
2334 req->qtcb->bottom.io.service_class = FSF_CLASS_3;
2335 req->qtcb->bottom.io.fcp_cmnd_length = FCP_CMND_LEN;
2336
2337 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
2338
2339 fcp_cmnd = (struct fcp_cmnd *) &req->qtcb->bottom.io.fcp_cmnd;
2340 zfcp_fc_scsi_to_fcp(fcp_cmnd, scmnd, tm_flags);
2341
2342 zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT);
2343 if (!zfcp_fsf_req_send(req))
2344 goto out;
2345
2346 zfcp_fsf_req_free(req);
2347 req = NULL;
2348out:
2349 spin_unlock_irq(&qdio->req_q_lock);
2350 return req;
2351}
2352
2353
2354
2355
2356
2357
2358void zfcp_fsf_reqid_check(struct zfcp_qdio *qdio, int sbal_idx)
2359{
2360 struct zfcp_adapter *adapter = qdio->adapter;
2361 struct qdio_buffer *sbal = qdio->res_q[sbal_idx];
2362 struct qdio_buffer_element *sbale;
2363 struct zfcp_fsf_req *fsf_req;
2364 unsigned long req_id;
2365 int idx;
2366
2367 for (idx = 0; idx < QDIO_MAX_ELEMENTS_PER_BUFFER; idx++) {
2368
2369 sbale = &sbal->element[idx];
2370 req_id = (unsigned long) sbale->addr;
2371 fsf_req = zfcp_reqlist_find_rm(adapter->req_list, req_id);
2372
2373 if (!fsf_req) {
2374
2375
2376
2377
2378 zfcp_qdio_siosl(adapter);
2379 panic("error: unknown req_id (%lx) on adapter %s.\n",
2380 req_id, dev_name(&adapter->ccw_device->dev));
2381 }
2382
2383 fsf_req->qdio_req.sbal_response = sbal_idx;
2384 zfcp_fsf_req_complete(fsf_req);
2385
2386 if (likely(sbale->eflags & SBAL_EFLAGS_LAST_ENTRY))
2387 break;
2388 }
2389}
2390
2391struct zfcp_fsf_req *zfcp_fsf_get_req(struct zfcp_qdio *qdio,
2392 struct qdio_buffer *sbal)
2393{
2394 struct qdio_buffer_element *sbale = &sbal->element[0];
2395 u64 req_id = (unsigned long) sbale->addr;
2396
2397 return zfcp_reqlist_find(qdio->adapter->req_list, req_id);
2398}
2399
