1 // SPDX-License-Identifier: GPL-2.0
5 * Implementation of FSF commands.
7 * Copyright IBM Corp. 2002, 2020
10 #define KMSG_COMPONENT "zfcp"
11 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
13 #include <linux/blktrace_api.h>
14 #include <linux/jiffies.h>
15 #include <linux/types.h>
16 #include <linux/slab.h>
17 #include <scsi/fc/fc_els.h>
21 #include "zfcp_qdio.h"
22 #include "zfcp_reqlist.h"
23 #include "zfcp_diag.h"
25 /* timeout for FSF requests sent during scsi_eh: abort or FCP TMF */
26 #define ZFCP_FSF_SCSI_ER_TIMEOUT (10*HZ)
27 /* timeout for: exchange config/port data outside ERP, or open/close WKA port */
28 #define ZFCP_FSF_REQUEST_TIMEOUT (60*HZ)
30 struct kmem_cache *zfcp_fsf_qtcb_cache;
32 static bool ber_stop = true;
33 module_param(ber_stop, bool, 0600);
34 MODULE_PARM_DESC(ber_stop,
35 "Shuts down FCP devices for FCP channels that report a bit-error count in excess of its threshold (default on)");
37 static void zfcp_fsf_request_timeout_handler(struct timer_list *t)
39 struct zfcp_fsf_req *fsf_req = from_timer(fsf_req, t, timer);
40 struct zfcp_adapter *adapter = fsf_req->adapter;
42 zfcp_qdio_siosl(adapter);
43 zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED,
47 static void zfcp_fsf_start_timer(struct zfcp_fsf_req *fsf_req,
48 unsigned long timeout)
50 fsf_req->timer.function = zfcp_fsf_request_timeout_handler;
51 fsf_req->timer.expires = jiffies + timeout;
52 add_timer(&fsf_req->timer);
55 static void zfcp_fsf_start_erp_timer(struct zfcp_fsf_req *fsf_req)
57 BUG_ON(!fsf_req->erp_action);
58 fsf_req->timer.function = zfcp_erp_timeout_handler;
59 fsf_req->timer.expires = jiffies + 30 * HZ;
60 add_timer(&fsf_req->timer);
63 /* association between FSF command and FSF QTCB type */
64 static u32 fsf_qtcb_type[] = {
65 [FSF_QTCB_FCP_CMND] = FSF_IO_COMMAND,
66 [FSF_QTCB_ABORT_FCP_CMND] = FSF_SUPPORT_COMMAND,
67 [FSF_QTCB_OPEN_PORT_WITH_DID] = FSF_SUPPORT_COMMAND,
68 [FSF_QTCB_OPEN_LUN] = FSF_SUPPORT_COMMAND,
69 [FSF_QTCB_CLOSE_LUN] = FSF_SUPPORT_COMMAND,
70 [FSF_QTCB_CLOSE_PORT] = FSF_SUPPORT_COMMAND,
71 [FSF_QTCB_CLOSE_PHYSICAL_PORT] = FSF_SUPPORT_COMMAND,
72 [FSF_QTCB_SEND_ELS] = FSF_SUPPORT_COMMAND,
73 [FSF_QTCB_SEND_GENERIC] = FSF_SUPPORT_COMMAND,
74 [FSF_QTCB_EXCHANGE_CONFIG_DATA] = FSF_CONFIG_COMMAND,
75 [FSF_QTCB_EXCHANGE_PORT_DATA] = FSF_PORT_COMMAND,
76 [FSF_QTCB_DOWNLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND,
77 [FSF_QTCB_UPLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND
80 static void zfcp_fsf_class_not_supp(struct zfcp_fsf_req *req)
82 dev_err(&req->adapter->ccw_device->dev, "FCP device not "
83 "operational because of an unsupported FC class\n");
84 zfcp_erp_adapter_shutdown(req->adapter, 0, "fscns_1");
85 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
89 * zfcp_fsf_req_free - free memory used by fsf request
90 * @req: pointer to struct zfcp_fsf_req
92 void zfcp_fsf_req_free(struct zfcp_fsf_req *req)
94 if (likely(req->pool)) {
95 if (likely(!zfcp_fsf_req_is_status_read_buffer(req)))
96 mempool_free(req->qtcb, req->adapter->pool.qtcb_pool);
97 mempool_free(req, req->pool);
101 if (likely(!zfcp_fsf_req_is_status_read_buffer(req)))
102 kmem_cache_free(zfcp_fsf_qtcb_cache, req->qtcb);
106 static void zfcp_fsf_status_read_port_closed(struct zfcp_fsf_req *req)
109 struct fsf_status_read_buffer *sr_buf = req->data;
110 struct zfcp_adapter *adapter = req->adapter;
111 struct zfcp_port *port;
112 int d_id = ntoh24(sr_buf->d_id);
114 read_lock_irqsave(&adapter->port_list_lock, flags);
115 list_for_each_entry(port, &adapter->port_list, list)
116 if (port->d_id == d_id) {
117 zfcp_erp_port_reopen(port, 0, "fssrpc1");
120 read_unlock_irqrestore(&adapter->port_list_lock, flags);
123 void zfcp_fsf_fc_host_link_down(struct zfcp_adapter *adapter)
125 struct Scsi_Host *shost = adapter->scsi_host;
127 adapter->hydra_version = 0;
128 adapter->peer_wwpn = 0;
129 adapter->peer_wwnn = 0;
130 adapter->peer_d_id = 0;
132 /* if there is no shost yet, we have nothing to zero-out */
136 fc_host_port_id(shost) = 0;
137 fc_host_fabric_name(shost) = 0;
138 fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN;
139 fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN;
140 snprintf(fc_host_model(shost), FC_SYMBOLIC_NAME_SIZE, "0x%04x", 0);
141 memset(fc_host_active_fc4s(shost), 0, FC_FC4_LIST_SIZE);
144 static void zfcp_fsf_link_down_info_eval(struct zfcp_fsf_req *req,
145 struct fsf_link_down_info *link_down)
147 struct zfcp_adapter *adapter = req->adapter;
149 if (atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED)
152 atomic_or(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED, &adapter->status);
154 zfcp_scsi_schedule_rports_block(adapter);
156 zfcp_fsf_fc_host_link_down(adapter);
161 switch (link_down->error_code) {
162 case FSF_PSQ_LINK_NO_LIGHT:
163 dev_warn(&req->adapter->ccw_device->dev,
164 "There is no light signal from the local "
165 "fibre channel cable\n");
167 case FSF_PSQ_LINK_WRAP_PLUG:
168 dev_warn(&req->adapter->ccw_device->dev,
169 "There is a wrap plug instead of a fibre "
172 case FSF_PSQ_LINK_NO_FCP:
173 dev_warn(&req->adapter->ccw_device->dev,
174 "The adjacent fibre channel node does not "
177 case FSF_PSQ_LINK_FIRMWARE_UPDATE:
178 dev_warn(&req->adapter->ccw_device->dev,
179 "The FCP device is suspended because of a "
180 "firmware update\n");
182 case FSF_PSQ_LINK_INVALID_WWPN:
183 dev_warn(&req->adapter->ccw_device->dev,
184 "The FCP device detected a WWPN that is "
185 "duplicate or not valid\n");
187 case FSF_PSQ_LINK_NO_NPIV_SUPPORT:
188 dev_warn(&req->adapter->ccw_device->dev,
189 "The fibre channel fabric does not support NPIV\n");
191 case FSF_PSQ_LINK_NO_FCP_RESOURCES:
192 dev_warn(&req->adapter->ccw_device->dev,
193 "The FCP adapter cannot support more NPIV ports\n");
195 case FSF_PSQ_LINK_NO_FABRIC_RESOURCES:
196 dev_warn(&req->adapter->ccw_device->dev,
197 "The adjacent switch cannot support "
198 "more NPIV ports\n");
200 case FSF_PSQ_LINK_FABRIC_LOGIN_UNABLE:
201 dev_warn(&req->adapter->ccw_device->dev,
202 "The FCP adapter could not log in to the "
203 "fibre channel fabric\n");
205 case FSF_PSQ_LINK_WWPN_ASSIGNMENT_CORRUPTED:
206 dev_warn(&req->adapter->ccw_device->dev,
207 "The WWPN assignment file on the FCP adapter "
208 "has been damaged\n");
210 case FSF_PSQ_LINK_MODE_TABLE_CURRUPTED:
211 dev_warn(&req->adapter->ccw_device->dev,
212 "The mode table on the FCP adapter "
213 "has been damaged\n");
215 case FSF_PSQ_LINK_NO_WWPN_ASSIGNMENT:
216 dev_warn(&req->adapter->ccw_device->dev,
217 "All NPIV ports on the FCP adapter have "
221 dev_warn(&req->adapter->ccw_device->dev,
222 "The link between the FCP adapter and "
223 "the FC fabric is down\n");
226 zfcp_erp_set_adapter_status(adapter, ZFCP_STATUS_COMMON_ERP_FAILED);
229 static void zfcp_fsf_status_read_link_down(struct zfcp_fsf_req *req)
231 struct fsf_status_read_buffer *sr_buf = req->data;
232 struct fsf_link_down_info *ldi =
233 (struct fsf_link_down_info *) &sr_buf->payload;
235 switch (sr_buf->status_subtype) {
236 case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK:
237 case FSF_STATUS_READ_SUB_FDISC_FAILED:
238 zfcp_fsf_link_down_info_eval(req, ldi);
240 case FSF_STATUS_READ_SUB_FIRMWARE_UPDATE:
241 zfcp_fsf_link_down_info_eval(req, NULL);
245 static void zfcp_fsf_status_read_handler(struct zfcp_fsf_req *req)
247 struct zfcp_adapter *adapter = req->adapter;
248 struct fsf_status_read_buffer *sr_buf = req->data;
250 if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) {
251 zfcp_dbf_hba_fsf_uss("fssrh_1", req);
252 mempool_free(virt_to_page(sr_buf), adapter->pool.sr_data);
253 zfcp_fsf_req_free(req);
257 zfcp_dbf_hba_fsf_uss("fssrh_4", req);
259 switch (sr_buf->status_type) {
260 case FSF_STATUS_READ_PORT_CLOSED:
261 zfcp_fsf_status_read_port_closed(req);
263 case FSF_STATUS_READ_INCOMING_ELS:
264 zfcp_fc_incoming_els(req);
266 case FSF_STATUS_READ_SENSE_DATA_AVAIL:
268 case FSF_STATUS_READ_BIT_ERROR_THRESHOLD:
269 zfcp_dbf_hba_bit_err("fssrh_3", req);
271 dev_warn(&adapter->ccw_device->dev,
272 "All paths over this FCP device are disused because of excessive bit errors\n");
273 zfcp_erp_adapter_shutdown(adapter, 0, "fssrh_b");
275 dev_warn(&adapter->ccw_device->dev,
276 "The error threshold for checksum statistics has been exceeded\n");
279 case FSF_STATUS_READ_LINK_DOWN:
280 zfcp_fsf_status_read_link_down(req);
281 zfcp_fc_enqueue_event(adapter, FCH_EVT_LINKDOWN, 0);
283 case FSF_STATUS_READ_LINK_UP:
284 dev_info(&adapter->ccw_device->dev,
285 "The local link has been restored\n");
286 /* All ports should be marked as ready to run again */
287 zfcp_erp_set_adapter_status(adapter,
288 ZFCP_STATUS_COMMON_RUNNING);
289 zfcp_erp_adapter_reopen(adapter,
290 ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED |
291 ZFCP_STATUS_COMMON_ERP_FAILED,
293 zfcp_fc_enqueue_event(adapter, FCH_EVT_LINKUP, 0);
296 case FSF_STATUS_READ_NOTIFICATION_LOST:
297 if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_INCOMING_ELS)
298 zfcp_fc_conditional_port_scan(adapter);
300 case FSF_STATUS_READ_FEATURE_UPDATE_ALERT:
301 adapter->adapter_features = sr_buf->payload.word[0];
305 mempool_free(virt_to_page(sr_buf), adapter->pool.sr_data);
306 zfcp_fsf_req_free(req);
308 atomic_inc(&adapter->stat_miss);
309 queue_work(adapter->work_queue, &adapter->stat_work);
312 static void zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req *req)
314 switch (req->qtcb->header.fsf_status_qual.word[0]) {
315 case FSF_SQ_FCP_RSP_AVAILABLE:
316 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
317 case FSF_SQ_NO_RETRY_POSSIBLE:
318 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
320 case FSF_SQ_COMMAND_ABORTED:
322 case FSF_SQ_NO_RECOM:
323 dev_err(&req->adapter->ccw_device->dev,
324 "The FCP adapter reported a problem "
325 "that cannot be recovered\n");
326 zfcp_qdio_siosl(req->adapter);
327 zfcp_erp_adapter_shutdown(req->adapter, 0, "fsfsqe1");
330 /* all non-return stats set FSFREQ_ERROR*/
331 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
334 static void zfcp_fsf_fsfstatus_eval(struct zfcp_fsf_req *req)
336 if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR))
339 switch (req->qtcb->header.fsf_status) {
340 case FSF_UNKNOWN_COMMAND:
341 dev_err(&req->adapter->ccw_device->dev,
342 "The FCP adapter does not recognize the command 0x%x\n",
343 req->qtcb->header.fsf_command);
344 zfcp_erp_adapter_shutdown(req->adapter, 0, "fsfse_1");
345 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
347 case FSF_ADAPTER_STATUS_AVAILABLE:
348 zfcp_fsf_fsfstatus_qual_eval(req);
353 static void zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *req)
355 struct zfcp_adapter *adapter = req->adapter;
356 struct fsf_qtcb *qtcb = req->qtcb;
357 union fsf_prot_status_qual *psq = &qtcb->prefix.prot_status_qual;
359 zfcp_dbf_hba_fsf_response(req);
361 if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) {
362 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
366 switch (qtcb->prefix.prot_status) {
368 case FSF_PROT_FSF_STATUS_PRESENTED:
370 case FSF_PROT_QTCB_VERSION_ERROR:
371 dev_err(&adapter->ccw_device->dev,
372 "QTCB version 0x%x not supported by FCP adapter "
373 "(0x%x to 0x%x)\n", FSF_QTCB_CURRENT_VERSION,
374 psq->word[0], psq->word[1]);
375 zfcp_erp_adapter_shutdown(adapter, 0, "fspse_1");
377 case FSF_PROT_ERROR_STATE:
378 case FSF_PROT_SEQ_NUMB_ERROR:
379 zfcp_erp_adapter_reopen(adapter, 0, "fspse_2");
380 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
382 case FSF_PROT_UNSUPP_QTCB_TYPE:
383 dev_err(&adapter->ccw_device->dev,
384 "The QTCB type is not supported by the FCP adapter\n");
385 zfcp_erp_adapter_shutdown(adapter, 0, "fspse_3");
387 case FSF_PROT_HOST_CONNECTION_INITIALIZING:
388 atomic_or(ZFCP_STATUS_ADAPTER_HOST_CON_INIT,
391 case FSF_PROT_DUPLICATE_REQUEST_ID:
392 dev_err(&adapter->ccw_device->dev,
393 "0x%Lx is an ambiguous request identifier\n",
394 (unsigned long long)qtcb->bottom.support.req_handle);
395 zfcp_erp_adapter_shutdown(adapter, 0, "fspse_4");
397 case FSF_PROT_LINK_DOWN:
398 zfcp_fsf_link_down_info_eval(req, &psq->link_down_info);
399 /* go through reopen to flush pending requests */
400 zfcp_erp_adapter_reopen(adapter, 0, "fspse_6");
402 case FSF_PROT_REEST_QUEUE:
403 /* All ports should be marked as ready to run again */
404 zfcp_erp_set_adapter_status(adapter,
405 ZFCP_STATUS_COMMON_RUNNING);
406 zfcp_erp_adapter_reopen(adapter,
407 ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED |
408 ZFCP_STATUS_COMMON_ERP_FAILED,
412 dev_err(&adapter->ccw_device->dev,
413 "0x%x is not a valid transfer protocol status\n",
414 qtcb->prefix.prot_status);
415 zfcp_qdio_siosl(adapter);
416 zfcp_erp_adapter_shutdown(adapter, 0, "fspse_9");
418 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
422 * zfcp_fsf_req_complete - process completion of a FSF request
423 * @req: The FSF request that has been completed.
425 * When a request has been completed either from the FCP adapter,
426 * or it has been dismissed due to a queue shutdown, this function
427 * is called to process the completion status and trigger further
428 * events related to the FSF request.
430 static void zfcp_fsf_req_complete(struct zfcp_fsf_req *req)
432 if (unlikely(zfcp_fsf_req_is_status_read_buffer(req))) {
433 zfcp_fsf_status_read_handler(req);
437 del_timer_sync(&req->timer);
438 zfcp_fsf_protstatus_eval(req);
439 zfcp_fsf_fsfstatus_eval(req);
443 zfcp_erp_notify(req->erp_action, 0);
445 if (likely(req->status & ZFCP_STATUS_FSFREQ_CLEANUP))
446 zfcp_fsf_req_free(req);
448 complete(&req->completion);
452 * zfcp_fsf_req_dismiss_all - dismiss all fsf requests
453 * @adapter: pointer to struct zfcp_adapter
455 * Never ever call this without shutting down the adapter first.
456 * Otherwise the adapter would continue using and corrupting s390 storage.
457 * Included BUG_ON() call to ensure this is done.
458 * ERP is supposed to be the only user of this function.
460 void zfcp_fsf_req_dismiss_all(struct zfcp_adapter *adapter)
462 struct zfcp_fsf_req *req, *tmp;
463 LIST_HEAD(remove_queue);
465 BUG_ON(atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP);
466 zfcp_reqlist_move(adapter->req_list, &remove_queue);
468 list_for_each_entry_safe(req, tmp, &remove_queue, list) {
469 list_del(&req->list);
470 req->status |= ZFCP_STATUS_FSFREQ_DISMISSED;
471 zfcp_fsf_req_complete(req);
475 #define ZFCP_FSF_PORTSPEED_1GBIT (1 << 0)
476 #define ZFCP_FSF_PORTSPEED_2GBIT (1 << 1)
477 #define ZFCP_FSF_PORTSPEED_4GBIT (1 << 2)
478 #define ZFCP_FSF_PORTSPEED_10GBIT (1 << 3)
479 #define ZFCP_FSF_PORTSPEED_8GBIT (1 << 4)
480 #define ZFCP_FSF_PORTSPEED_16GBIT (1 << 5)
481 #define ZFCP_FSF_PORTSPEED_32GBIT (1 << 6)
482 #define ZFCP_FSF_PORTSPEED_64GBIT (1 << 7)
483 #define ZFCP_FSF_PORTSPEED_128GBIT (1 << 8)
484 #define ZFCP_FSF_PORTSPEED_NOT_NEGOTIATED (1 << 15)
486 u32 zfcp_fsf_convert_portspeed(u32 fsf_speed)
489 if (fsf_speed & ZFCP_FSF_PORTSPEED_1GBIT)
490 fdmi_speed |= FC_PORTSPEED_1GBIT;
491 if (fsf_speed & ZFCP_FSF_PORTSPEED_2GBIT)
492 fdmi_speed |= FC_PORTSPEED_2GBIT;
493 if (fsf_speed & ZFCP_FSF_PORTSPEED_4GBIT)
494 fdmi_speed |= FC_PORTSPEED_4GBIT;
495 if (fsf_speed & ZFCP_FSF_PORTSPEED_10GBIT)
496 fdmi_speed |= FC_PORTSPEED_10GBIT;
497 if (fsf_speed & ZFCP_FSF_PORTSPEED_8GBIT)
498 fdmi_speed |= FC_PORTSPEED_8GBIT;
499 if (fsf_speed & ZFCP_FSF_PORTSPEED_16GBIT)
500 fdmi_speed |= FC_PORTSPEED_16GBIT;
501 if (fsf_speed & ZFCP_FSF_PORTSPEED_32GBIT)
502 fdmi_speed |= FC_PORTSPEED_32GBIT;
503 if (fsf_speed & ZFCP_FSF_PORTSPEED_64GBIT)
504 fdmi_speed |= FC_PORTSPEED_64GBIT;
505 if (fsf_speed & ZFCP_FSF_PORTSPEED_128GBIT)
506 fdmi_speed |= FC_PORTSPEED_128GBIT;
507 if (fsf_speed & ZFCP_FSF_PORTSPEED_NOT_NEGOTIATED)
508 fdmi_speed |= FC_PORTSPEED_NOT_NEGOTIATED;
512 static int zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req *req)
514 struct fsf_qtcb_bottom_config *bottom = &req->qtcb->bottom.config;
515 struct zfcp_adapter *adapter = req->adapter;
516 struct fc_els_flogi *plogi;
518 /* adjust pointers for missing command code */
519 plogi = (struct fc_els_flogi *) ((u8 *)&bottom->plogi_payload
523 memcpy(req->data, bottom, sizeof(*bottom));
525 adapter->timer_ticks = bottom->timer_interval & ZFCP_FSF_TIMER_INT_MASK;
526 adapter->stat_read_buf_num = max(bottom->status_read_buf_num,
527 (u16)FSF_STATUS_READS_RECOM);
529 /* no error return above here, otherwise must fix call chains */
530 /* do not evaluate invalid fields */
531 if (req->qtcb->header.fsf_status == FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE)
534 adapter->hydra_version = bottom->adapter_type;
536 switch (bottom->fc_topology) {
538 adapter->peer_d_id = ntoh24(bottom->peer_d_id);
539 adapter->peer_wwpn = be64_to_cpu(plogi->fl_wwpn);
540 adapter->peer_wwnn = be64_to_cpu(plogi->fl_wwnn);
542 case FSF_TOPO_FABRIC:
546 dev_err(&adapter->ccw_device->dev,
547 "Unknown or unsupported arbitrated loop "
548 "fibre channel topology detected\n");
549 zfcp_erp_adapter_shutdown(adapter, 0, "fsece_1");
556 static void zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *req)
558 struct zfcp_adapter *adapter = req->adapter;
559 struct zfcp_diag_header *const diag_hdr =
560 &adapter->diagnostics->config_data.header;
561 struct fsf_qtcb *qtcb = req->qtcb;
562 struct fsf_qtcb_bottom_config *bottom = &qtcb->bottom.config;
564 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
567 adapter->fsf_lic_version = bottom->lic_version;
568 adapter->adapter_features = bottom->adapter_features;
569 adapter->connection_features = bottom->connection_features;
570 adapter->peer_wwpn = 0;
571 adapter->peer_wwnn = 0;
572 adapter->peer_d_id = 0;
574 switch (qtcb->header.fsf_status) {
577 * usually we wait with an update till the cache is too old,
578 * but because we have the data available, update it anyway
580 zfcp_diag_update_xdata(diag_hdr, bottom, false);
582 zfcp_scsi_shost_update_config_data(adapter, bottom, false);
583 if (zfcp_fsf_exchange_config_evaluate(req))
586 if (bottom->max_qtcb_size < sizeof(struct fsf_qtcb)) {
587 dev_err(&adapter->ccw_device->dev,
588 "FCP adapter maximum QTCB size (%d bytes) "
590 bottom->max_qtcb_size);
591 zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh1");
594 atomic_or(ZFCP_STATUS_ADAPTER_XCONFIG_OK,
597 case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE:
598 zfcp_diag_update_xdata(diag_hdr, bottom, true);
599 req->status |= ZFCP_STATUS_FSFREQ_XDATAINCOMPLETE;
601 /* avoids adapter shutdown to be able to recognize
602 * events such as LINK UP */
603 atomic_or(ZFCP_STATUS_ADAPTER_XCONFIG_OK,
605 zfcp_fsf_link_down_info_eval(req,
606 &qtcb->header.fsf_status_qual.link_down_info);
608 zfcp_scsi_shost_update_config_data(adapter, bottom, true);
609 if (zfcp_fsf_exchange_config_evaluate(req))
613 zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh3");
617 if (adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)
618 adapter->hardware_version = bottom->hardware_version;
620 if (FSF_QTCB_CURRENT_VERSION < bottom->low_qtcb_version) {
621 dev_err(&adapter->ccw_device->dev,
622 "The FCP adapter only supports newer "
623 "control block versions\n");
624 zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh4");
627 if (FSF_QTCB_CURRENT_VERSION > bottom->high_qtcb_version) {
628 dev_err(&adapter->ccw_device->dev,
629 "The FCP adapter only supports older "
630 "control block versions\n");
631 zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh5");
636 * Mapping of FC Endpoint Security flag masks to mnemonics
638 * NOTE: Update macro ZFCP_FSF_MAX_FC_SECURITY_MNEMONIC_LENGTH when making any
641 static const struct {
644 } zfcp_fsf_fc_security_mnemonics[] = {
645 { FSF_FC_SECURITY_AUTH, "Authentication" },
646 { FSF_FC_SECURITY_ENC_FCSP2 |
647 FSF_FC_SECURITY_ENC_ERAS, "Encryption" },
650 /* maximum strlen(zfcp_fsf_fc_security_mnemonics[...].name) + 1 */
651 #define ZFCP_FSF_MAX_FC_SECURITY_MNEMONIC_LENGTH 15
654 * zfcp_fsf_scnprint_fc_security() - translate FC Endpoint Security flags into
655 * mnemonics and place in a buffer
656 * @buf : the buffer to place the translated FC Endpoint Security flag(s)
658 * @size : the size of the buffer, including the trailing null space
659 * @fc_security: one or more FC Endpoint Security flags, or zero
660 * @fmt : specifies whether a list or a single item is to be put into the
663 * The Fibre Channel (FC) Endpoint Security flags are translated into mnemonics.
664 * If the FC Endpoint Security flags are zero "none" is placed into the buffer.
666 * With ZFCP_FSF_PRINT_FMT_LIST the mnemonics are placed as a list separated by
667 * a comma followed by a space into the buffer. If one or more FC Endpoint
668 * Security flags cannot be translated into a mnemonic, as they are undefined
669 * in zfcp_fsf_fc_security_mnemonics, their bitwise ORed value in hexadecimal
670 * representation is placed into the buffer.
672 * With ZFCP_FSF_PRINT_FMT_SINGLEITEM only one single mnemonic is placed into
673 * the buffer. If the FC Endpoint Security flag cannot be translated, as it is
674 * undefined in zfcp_fsf_fc_security_mnemonics, its value in hexadecimal
675 * representation is placed into the buffer. If more than one FC Endpoint
676 * Security flag was specified, their value in hexadecimal representation is
677 * placed into the buffer. The macro ZFCP_FSF_MAX_FC_SECURITY_MNEMONIC_LENGTH
678 * can be used to define a buffer that is large enough to hold one mnemonic.
680 * Return: The number of characters written into buf not including the trailing
681 * '\0'. If size is == 0 the function returns 0.
683 ssize_t zfcp_fsf_scnprint_fc_security(char *buf, size_t size, u32 fc_security,
684 enum zfcp_fsf_print_fmt fmt)
686 const char *prefix = "";
690 if (fc_security == 0)
691 return scnprintf(buf, size, "none");
692 if (fmt == ZFCP_FSF_PRINT_FMT_SINGLEITEM && hweight32(fc_security) != 1)
693 return scnprintf(buf, size, "0x%08x", fc_security);
695 for (i = 0; i < ARRAY_SIZE(zfcp_fsf_fc_security_mnemonics); i++) {
696 if (!(fc_security & zfcp_fsf_fc_security_mnemonics[i].mask))
699 len += scnprintf(buf + len, size - len, "%s%s", prefix,
700 zfcp_fsf_fc_security_mnemonics[i].name);
702 fc_security &= ~zfcp_fsf_fc_security_mnemonics[i].mask;
705 if (fc_security != 0)
706 len += scnprintf(buf + len, size - len, "%s0x%08x",
707 prefix, fc_security);
712 static void zfcp_fsf_dbf_adapter_fc_security(struct zfcp_adapter *adapter,
713 struct zfcp_fsf_req *req)
715 if (adapter->fc_security_algorithms ==
716 adapter->fc_security_algorithms_old) {
717 /* no change, no trace */
721 zfcp_dbf_hba_fsf_fces("fsfcesa", req, ZFCP_DBF_INVALID_WWPN,
722 adapter->fc_security_algorithms_old,
723 adapter->fc_security_algorithms);
725 adapter->fc_security_algorithms_old = adapter->fc_security_algorithms;
728 static void zfcp_fsf_exchange_port_evaluate(struct zfcp_fsf_req *req)
730 struct zfcp_adapter *adapter = req->adapter;
731 struct fsf_qtcb_bottom_port *bottom = &req->qtcb->bottom.port;
734 memcpy(req->data, bottom, sizeof(*bottom));
736 if (adapter->adapter_features & FSF_FEATURE_FC_SECURITY)
737 adapter->fc_security_algorithms =
738 bottom->fc_security_algorithms;
740 adapter->fc_security_algorithms = 0;
741 zfcp_fsf_dbf_adapter_fc_security(adapter, req);
744 static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *req)
746 struct zfcp_diag_header *const diag_hdr =
747 &req->adapter->diagnostics->port_data.header;
748 struct fsf_qtcb *qtcb = req->qtcb;
749 struct fsf_qtcb_bottom_port *bottom = &qtcb->bottom.port;
751 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
754 switch (qtcb->header.fsf_status) {
757 * usually we wait with an update till the cache is too old,
758 * but because we have the data available, update it anyway
760 zfcp_diag_update_xdata(diag_hdr, bottom, false);
762 zfcp_scsi_shost_update_port_data(req->adapter, bottom);
763 zfcp_fsf_exchange_port_evaluate(req);
765 case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE:
766 zfcp_diag_update_xdata(diag_hdr, bottom, true);
767 req->status |= ZFCP_STATUS_FSFREQ_XDATAINCOMPLETE;
769 zfcp_fsf_link_down_info_eval(req,
770 &qtcb->header.fsf_status_qual.link_down_info);
772 zfcp_scsi_shost_update_port_data(req->adapter, bottom);
773 zfcp_fsf_exchange_port_evaluate(req);
778 static struct zfcp_fsf_req *zfcp_fsf_alloc(mempool_t *pool)
780 struct zfcp_fsf_req *req;
783 req = mempool_alloc(pool, GFP_ATOMIC);
785 req = kmalloc(sizeof(*req), GFP_ATOMIC);
790 memset(req, 0, sizeof(*req));
795 static struct fsf_qtcb *zfcp_fsf_qtcb_alloc(mempool_t *pool)
797 struct fsf_qtcb *qtcb;
800 qtcb = mempool_alloc(pool, GFP_ATOMIC);
802 qtcb = kmem_cache_alloc(zfcp_fsf_qtcb_cache, GFP_ATOMIC);
807 memset(qtcb, 0, sizeof(*qtcb));
811 static struct zfcp_fsf_req *zfcp_fsf_req_create(struct zfcp_qdio *qdio,
812 u32 fsf_cmd, u8 sbtype,
815 struct zfcp_adapter *adapter = qdio->adapter;
816 struct zfcp_fsf_req *req = zfcp_fsf_alloc(pool);
819 return ERR_PTR(-ENOMEM);
821 if (adapter->req_no == 0)
824 INIT_LIST_HEAD(&req->list);
825 timer_setup(&req->timer, NULL, 0);
826 init_completion(&req->completion);
828 req->adapter = adapter;
829 req->req_id = adapter->req_no;
831 if (likely(fsf_cmd != FSF_QTCB_UNSOLICITED_STATUS)) {
833 req->qtcb = zfcp_fsf_qtcb_alloc(
834 adapter->pool.qtcb_pool);
836 req->qtcb = zfcp_fsf_qtcb_alloc(NULL);
838 if (unlikely(!req->qtcb)) {
839 zfcp_fsf_req_free(req);
840 return ERR_PTR(-ENOMEM);
843 req->qtcb->prefix.req_seq_no = adapter->fsf_req_seq_no;
844 req->qtcb->prefix.req_id = req->req_id;
845 req->qtcb->prefix.ulp_info = 26;
846 req->qtcb->prefix.qtcb_type = fsf_qtcb_type[fsf_cmd];
847 req->qtcb->prefix.qtcb_version = FSF_QTCB_CURRENT_VERSION;
848 req->qtcb->header.req_handle = req->req_id;
849 req->qtcb->header.fsf_command = fsf_cmd;
852 zfcp_qdio_req_init(adapter->qdio, &req->qdio_req, req->req_id, sbtype,
853 req->qtcb, sizeof(struct fsf_qtcb));
858 static int zfcp_fsf_req_send(struct zfcp_fsf_req *req)
860 const bool is_srb = zfcp_fsf_req_is_status_read_buffer(req);
861 struct zfcp_adapter *adapter = req->adapter;
862 struct zfcp_qdio *qdio = adapter->qdio;
863 int req_id = req->req_id;
865 zfcp_reqlist_add(adapter->req_list, req);
867 req->qdio_req.qdio_outb_usage = atomic_read(&qdio->req_q_free);
868 req->issued = get_tod_clock();
869 if (zfcp_qdio_send(qdio, &req->qdio_req)) {
870 del_timer_sync(&req->timer);
871 /* lookup request again, list might have changed */
872 zfcp_reqlist_find_rm(adapter->req_list, req_id);
873 zfcp_erp_adapter_reopen(adapter, 0, "fsrs__1");
878 * NOTE: DO NOT TOUCH ASYNC req PAST THIS POINT.
879 * ONLY TOUCH SYNC req AGAIN ON req->completion.
881 * The request might complete and be freed concurrently at any point
882 * now. This is not protected by the QDIO-lock (req_q_lock). So any
883 * uncontrolled access after this might result in an use-after-free bug.
884 * Only if the request doesn't have ZFCP_STATUS_FSFREQ_CLEANUP set, and
885 * when it is completed via req->completion, is it safe to use req
889 /* Don't increase for unsolicited status */
891 adapter->fsf_req_seq_no++;
898 * zfcp_fsf_status_read - send status read request
899 * @qdio: pointer to struct zfcp_qdio
900 * Returns: 0 on success, ERROR otherwise
902 int zfcp_fsf_status_read(struct zfcp_qdio *qdio)
904 struct zfcp_adapter *adapter = qdio->adapter;
905 struct zfcp_fsf_req *req;
906 struct fsf_status_read_buffer *sr_buf;
910 spin_lock_irq(&qdio->req_q_lock);
911 if (zfcp_qdio_sbal_get(qdio))
914 req = zfcp_fsf_req_create(qdio, FSF_QTCB_UNSOLICITED_STATUS,
915 SBAL_SFLAGS0_TYPE_STATUS,
916 adapter->pool.status_read_req);
918 retval = PTR_ERR(req);
922 page = mempool_alloc(adapter->pool.sr_data, GFP_ATOMIC);
927 sr_buf = page_address(page);
928 memset(sr_buf, 0, sizeof(*sr_buf));
931 zfcp_qdio_fill_next(qdio, &req->qdio_req, sr_buf, sizeof(*sr_buf));
932 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
934 retval = zfcp_fsf_req_send(req);
936 goto failed_req_send;
937 /* NOTE: DO NOT TOUCH req PAST THIS POINT! */
943 mempool_free(virt_to_page(sr_buf), adapter->pool.sr_data);
945 zfcp_dbf_hba_fsf_uss("fssr__1", req);
946 zfcp_fsf_req_free(req);
948 spin_unlock_irq(&qdio->req_q_lock);
952 static void zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req *req)
954 struct scsi_device *sdev = req->data;
955 struct zfcp_scsi_dev *zfcp_sdev;
956 union fsf_status_qual *fsq = &req->qtcb->header.fsf_status_qual;
958 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
961 zfcp_sdev = sdev_to_zfcp(sdev);
963 switch (req->qtcb->header.fsf_status) {
964 case FSF_PORT_HANDLE_NOT_VALID:
965 if (fsq->word[0] == fsq->word[1]) {
966 zfcp_erp_adapter_reopen(zfcp_sdev->port->adapter, 0,
968 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
971 case FSF_LUN_HANDLE_NOT_VALID:
972 if (fsq->word[0] == fsq->word[1]) {
973 zfcp_erp_port_reopen(zfcp_sdev->port, 0, "fsafch2");
974 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
977 case FSF_FCP_COMMAND_DOES_NOT_EXIST:
978 req->status |= ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED;
981 zfcp_erp_set_port_status(zfcp_sdev->port,
982 ZFCP_STATUS_COMMON_ACCESS_BOXED);
983 zfcp_erp_port_reopen(zfcp_sdev->port,
984 ZFCP_STATUS_COMMON_ERP_FAILED, "fsafch3");
985 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
988 zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_ACCESS_BOXED);
989 zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED,
991 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
993 case FSF_ADAPTER_STATUS_AVAILABLE:
994 switch (fsq->word[0]) {
995 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
996 zfcp_fc_test_link(zfcp_sdev->port);
998 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
999 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1004 req->status |= ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED;
1010 * zfcp_fsf_abort_fcp_cmnd - abort running SCSI command
1011 * @scmnd: The SCSI command to abort
1012 * Returns: pointer to struct zfcp_fsf_req
1015 struct zfcp_fsf_req *zfcp_fsf_abort_fcp_cmnd(struct scsi_cmnd *scmnd)
1017 struct zfcp_fsf_req *req = NULL;
1018 struct scsi_device *sdev = scmnd->device;
1019 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
1020 struct zfcp_qdio *qdio = zfcp_sdev->port->adapter->qdio;
1021 unsigned long old_req_id = (unsigned long) scmnd->host_scribble;
1023 spin_lock_irq(&qdio->req_q_lock);
1024 if (zfcp_qdio_sbal_get(qdio))
1026 req = zfcp_fsf_req_create(qdio, FSF_QTCB_ABORT_FCP_CMND,
1027 SBAL_SFLAGS0_TYPE_READ,
1028 qdio->adapter->pool.scsi_abort);
1034 if (unlikely(!(atomic_read(&zfcp_sdev->status) &
1035 ZFCP_STATUS_COMMON_UNBLOCKED)))
1036 goto out_error_free;
1038 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1041 req->handler = zfcp_fsf_abort_fcp_command_handler;
1042 req->qtcb->header.lun_handle = zfcp_sdev->lun_handle;
1043 req->qtcb->header.port_handle = zfcp_sdev->port->handle;
1044 req->qtcb->bottom.support.req_handle = (u64) old_req_id;
1046 zfcp_fsf_start_timer(req, ZFCP_FSF_SCSI_ER_TIMEOUT);
1047 if (!zfcp_fsf_req_send(req)) {
1048 /* NOTE: DO NOT TOUCH req, UNTIL IT COMPLETES! */
1053 zfcp_fsf_req_free(req);
1056 spin_unlock_irq(&qdio->req_q_lock);
1060 static void zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *req)
1062 struct zfcp_adapter *adapter = req->adapter;
1063 struct zfcp_fsf_ct_els *ct = req->data;
1064 struct fsf_qtcb_header *header = &req->qtcb->header;
1066 ct->status = -EINVAL;
1068 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1069 goto skip_fsfstatus;
1071 switch (header->fsf_status) {
1074 zfcp_dbf_san_res("fsscth2", req);
1076 case FSF_SERVICE_CLASS_NOT_SUPPORTED:
1077 zfcp_fsf_class_not_supp(req);
1079 case FSF_ADAPTER_STATUS_AVAILABLE:
1080 switch (header->fsf_status_qual.word[0]){
1081 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1082 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1083 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1087 case FSF_PORT_BOXED:
1088 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1090 case FSF_PORT_HANDLE_NOT_VALID:
1091 zfcp_erp_adapter_reopen(adapter, 0, "fsscth1");
1093 case FSF_GENERIC_COMMAND_REJECTED:
1094 case FSF_PAYLOAD_SIZE_MISMATCH:
1095 case FSF_REQUEST_SIZE_TOO_LARGE:
1096 case FSF_RESPONSE_SIZE_TOO_LARGE:
1097 case FSF_SBAL_MISMATCH:
1098 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1104 ct->handler(ct->handler_data);
1107 static void zfcp_fsf_setup_ct_els_unchained(struct zfcp_qdio *qdio,
1108 struct zfcp_qdio_req *q_req,
1109 struct scatterlist *sg_req,
1110 struct scatterlist *sg_resp)
1112 zfcp_qdio_fill_next(qdio, q_req, sg_virt(sg_req), sg_req->length);
1113 zfcp_qdio_fill_next(qdio, q_req, sg_virt(sg_resp), sg_resp->length);
1114 zfcp_qdio_set_sbale_last(qdio, q_req);
1117 static int zfcp_fsf_setup_ct_els_sbals(struct zfcp_fsf_req *req,
1118 struct scatterlist *sg_req,
1119 struct scatterlist *sg_resp)
1121 struct zfcp_adapter *adapter = req->adapter;
1122 struct zfcp_qdio *qdio = adapter->qdio;
1123 struct fsf_qtcb *qtcb = req->qtcb;
1124 u32 feat = adapter->adapter_features;
1126 if (zfcp_adapter_multi_buffer_active(adapter)) {
1127 if (zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, sg_req))
1129 qtcb->bottom.support.req_buf_length =
1130 zfcp_qdio_real_bytes(sg_req);
1131 if (zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, sg_resp))
1133 qtcb->bottom.support.resp_buf_length =
1134 zfcp_qdio_real_bytes(sg_resp);
1136 zfcp_qdio_set_data_div(qdio, &req->qdio_req, sg_nents(sg_req));
1137 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1138 zfcp_qdio_set_scount(qdio, &req->qdio_req);
1142 /* use single, unchained SBAL if it can hold the request */
1143 if (zfcp_qdio_sg_one_sbale(sg_req) && zfcp_qdio_sg_one_sbale(sg_resp)) {
1144 zfcp_fsf_setup_ct_els_unchained(qdio, &req->qdio_req,
1149 if (!(feat & FSF_FEATURE_ELS_CT_CHAINED_SBALS))
1152 if (zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, sg_req))
1155 qtcb->bottom.support.req_buf_length = zfcp_qdio_real_bytes(sg_req);
1157 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1158 zfcp_qdio_skip_to_last_sbale(qdio, &req->qdio_req);
1160 if (zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, sg_resp))
1163 qtcb->bottom.support.resp_buf_length = zfcp_qdio_real_bytes(sg_resp);
1165 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1170 static int zfcp_fsf_setup_ct_els(struct zfcp_fsf_req *req,
1171 struct scatterlist *sg_req,
1172 struct scatterlist *sg_resp,
1173 unsigned int timeout)
1177 ret = zfcp_fsf_setup_ct_els_sbals(req, sg_req, sg_resp);
1181 /* common settings for ct/gs and els requests */
1183 timeout = 255; /* max value accepted by hardware */
1184 req->qtcb->bottom.support.service_class = FSF_CLASS_3;
1185 req->qtcb->bottom.support.timeout = timeout;
1186 zfcp_fsf_start_timer(req, (timeout + 10) * HZ);
1192 * zfcp_fsf_send_ct - initiate a Generic Service request (FC-GS)
1193 * @wka_port: pointer to zfcp WKA port to send CT/GS to
1194 * @ct: pointer to struct zfcp_send_ct with data for request
1195 * @pool: if non-null this mempool is used to allocate struct zfcp_fsf_req
1196 * @timeout: timeout that hardware should use, and a later software timeout
1198 int zfcp_fsf_send_ct(struct zfcp_fc_wka_port *wka_port,
1199 struct zfcp_fsf_ct_els *ct, mempool_t *pool,
1200 unsigned int timeout)
1202 struct zfcp_qdio *qdio = wka_port->adapter->qdio;
1203 struct zfcp_fsf_req *req;
1206 spin_lock_irq(&qdio->req_q_lock);
1207 if (zfcp_qdio_sbal_get(qdio))
1210 req = zfcp_fsf_req_create(qdio, FSF_QTCB_SEND_GENERIC,
1211 SBAL_SFLAGS0_TYPE_WRITE_READ, pool);
1218 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1219 ret = zfcp_fsf_setup_ct_els(req, ct->req, ct->resp, timeout);
1223 req->handler = zfcp_fsf_send_ct_handler;
1224 req->qtcb->header.port_handle = wka_port->handle;
1225 ct->d_id = wka_port->d_id;
1228 zfcp_dbf_san_req("fssct_1", req, wka_port->d_id);
1230 ret = zfcp_fsf_req_send(req);
1233 /* NOTE: DO NOT TOUCH req PAST THIS POINT! */
1238 zfcp_fsf_req_free(req);
1240 spin_unlock_irq(&qdio->req_q_lock);
1244 static void zfcp_fsf_send_els_handler(struct zfcp_fsf_req *req)
1246 struct zfcp_fsf_ct_els *send_els = req->data;
1247 struct fsf_qtcb_header *header = &req->qtcb->header;
1249 send_els->status = -EINVAL;
1251 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1252 goto skip_fsfstatus;
1254 switch (header->fsf_status) {
1256 send_els->status = 0;
1257 zfcp_dbf_san_res("fsselh1", req);
1259 case FSF_SERVICE_CLASS_NOT_SUPPORTED:
1260 zfcp_fsf_class_not_supp(req);
1262 case FSF_ADAPTER_STATUS_AVAILABLE:
1263 switch (header->fsf_status_qual.word[0]){
1264 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1265 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1266 case FSF_SQ_RETRY_IF_POSSIBLE:
1267 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1271 case FSF_ELS_COMMAND_REJECTED:
1272 case FSF_PAYLOAD_SIZE_MISMATCH:
1273 case FSF_REQUEST_SIZE_TOO_LARGE:
1274 case FSF_RESPONSE_SIZE_TOO_LARGE:
1276 case FSF_SBAL_MISMATCH:
1277 /* should never occur, avoided in zfcp_fsf_send_els */
1280 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1284 if (send_els->handler)
1285 send_els->handler(send_els->handler_data);
1289 * zfcp_fsf_send_els - initiate an ELS command (FC-FS)
1290 * @adapter: pointer to zfcp adapter
1291 * @d_id: N_Port_ID to send ELS to
1292 * @els: pointer to struct zfcp_send_els with data for the command
1293 * @timeout: timeout that hardware should use, and a later software timeout
1295 int zfcp_fsf_send_els(struct zfcp_adapter *adapter, u32 d_id,
1296 struct zfcp_fsf_ct_els *els, unsigned int timeout)
1298 struct zfcp_fsf_req *req;
1299 struct zfcp_qdio *qdio = adapter->qdio;
1302 spin_lock_irq(&qdio->req_q_lock);
1303 if (zfcp_qdio_sbal_get(qdio))
1306 req = zfcp_fsf_req_create(qdio, FSF_QTCB_SEND_ELS,
1307 SBAL_SFLAGS0_TYPE_WRITE_READ, NULL);
1314 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1316 if (!zfcp_adapter_multi_buffer_active(adapter))
1317 zfcp_qdio_sbal_limit(qdio, &req->qdio_req, 2);
1319 ret = zfcp_fsf_setup_ct_els(req, els->req, els->resp, timeout);
1324 hton24(req->qtcb->bottom.support.d_id, d_id);
1325 req->handler = zfcp_fsf_send_els_handler;
1329 zfcp_dbf_san_req("fssels1", req, d_id);
1331 ret = zfcp_fsf_req_send(req);
1334 /* NOTE: DO NOT TOUCH req PAST THIS POINT! */
1339 zfcp_fsf_req_free(req);
1341 spin_unlock_irq(&qdio->req_q_lock);
1345 int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action)
1347 struct zfcp_fsf_req *req;
1348 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1351 spin_lock_irq(&qdio->req_q_lock);
1352 if (zfcp_qdio_sbal_get(qdio))
1355 req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_CONFIG_DATA,
1356 SBAL_SFLAGS0_TYPE_READ,
1357 qdio->adapter->pool.erp_req);
1360 retval = PTR_ERR(req);
1364 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1365 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1367 req->qtcb->bottom.config.feature_selection =
1368 FSF_FEATURE_NOTIFICATION_LOST |
1369 FSF_FEATURE_UPDATE_ALERT |
1370 FSF_FEATURE_REQUEST_SFP_DATA |
1371 FSF_FEATURE_FC_SECURITY;
1372 req->erp_action = erp_action;
1373 req->handler = zfcp_fsf_exchange_config_data_handler;
1374 erp_action->fsf_req_id = req->req_id;
1376 zfcp_fsf_start_erp_timer(req);
1377 retval = zfcp_fsf_req_send(req);
1379 zfcp_fsf_req_free(req);
1380 erp_action->fsf_req_id = 0;
1382 /* NOTE: DO NOT TOUCH req PAST THIS POINT! */
1384 spin_unlock_irq(&qdio->req_q_lock);
1390 * zfcp_fsf_exchange_config_data_sync() - Request information about FCP channel.
1391 * @qdio: pointer to the QDIO-Queue to use for sending the command.
1392 * @data: pointer to the QTCB-Bottom for storing the result of the command,
1396 * * 0 - Exchange Config Data was successful, @data is complete
1397 * * -EIO - Exchange Config Data was not successful, @data is invalid
1398 * * -EAGAIN - @data contains incomplete data
1399 * * -ENOMEM - Some memory allocation failed along the way
1401 int zfcp_fsf_exchange_config_data_sync(struct zfcp_qdio *qdio,
1402 struct fsf_qtcb_bottom_config *data)
1404 struct zfcp_fsf_req *req = NULL;
1407 spin_lock_irq(&qdio->req_q_lock);
1408 if (zfcp_qdio_sbal_get(qdio))
1411 req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_CONFIG_DATA,
1412 SBAL_SFLAGS0_TYPE_READ, NULL);
1415 retval = PTR_ERR(req);
1419 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1420 req->handler = zfcp_fsf_exchange_config_data_handler;
1422 req->qtcb->bottom.config.feature_selection =
1423 FSF_FEATURE_NOTIFICATION_LOST |
1424 FSF_FEATURE_UPDATE_ALERT |
1425 FSF_FEATURE_REQUEST_SFP_DATA |
1426 FSF_FEATURE_FC_SECURITY;
1431 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1432 retval = zfcp_fsf_req_send(req);
1433 spin_unlock_irq(&qdio->req_q_lock);
1436 /* NOTE: ONLY TOUCH SYNC req AGAIN ON req->completion. */
1437 wait_for_completion(&req->completion);
1440 (ZFCP_STATUS_FSFREQ_ERROR | ZFCP_STATUS_FSFREQ_DISMISSED))
1442 else if (req->status & ZFCP_STATUS_FSFREQ_XDATAINCOMPLETE)
1446 zfcp_fsf_req_free(req);
1450 spin_unlock_irq(&qdio->req_q_lock);
1455 * zfcp_fsf_exchange_port_data - request information about local port
1456 * @erp_action: ERP action for the adapter for which port data is requested
1457 * Returns: 0 on success, error otherwise
1459 int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action)
1461 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1462 struct zfcp_fsf_req *req;
1465 if (!(qdio->adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT))
1468 spin_lock_irq(&qdio->req_q_lock);
1469 if (zfcp_qdio_sbal_get(qdio))
1472 req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_PORT_DATA,
1473 SBAL_SFLAGS0_TYPE_READ,
1474 qdio->adapter->pool.erp_req);
1477 retval = PTR_ERR(req);
1481 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1482 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1484 req->handler = zfcp_fsf_exchange_port_data_handler;
1485 req->erp_action = erp_action;
1486 erp_action->fsf_req_id = req->req_id;
1488 zfcp_fsf_start_erp_timer(req);
1489 retval = zfcp_fsf_req_send(req);
1491 zfcp_fsf_req_free(req);
1492 erp_action->fsf_req_id = 0;
1494 /* NOTE: DO NOT TOUCH req PAST THIS POINT! */
1496 spin_unlock_irq(&qdio->req_q_lock);
1501 * zfcp_fsf_exchange_port_data_sync() - Request information about local port.
1502 * @qdio: pointer to the QDIO-Queue to use for sending the command.
1503 * @data: pointer to the QTCB-Bottom for storing the result of the command,
1507 * * 0 - Exchange Port Data was successful, @data is complete
1508 * * -EIO - Exchange Port Data was not successful, @data is invalid
1509 * * -EAGAIN - @data contains incomplete data
1510 * * -ENOMEM - Some memory allocation failed along the way
1511 * * -EOPNOTSUPP - This operation is not supported
1513 int zfcp_fsf_exchange_port_data_sync(struct zfcp_qdio *qdio,
1514 struct fsf_qtcb_bottom_port *data)
1516 struct zfcp_fsf_req *req = NULL;
1519 if (!(qdio->adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT))
1522 spin_lock_irq(&qdio->req_q_lock);
1523 if (zfcp_qdio_sbal_get(qdio))
1526 req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_PORT_DATA,
1527 SBAL_SFLAGS0_TYPE_READ, NULL);
1530 retval = PTR_ERR(req);
1537 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1539 req->handler = zfcp_fsf_exchange_port_data_handler;
1540 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1541 retval = zfcp_fsf_req_send(req);
1542 spin_unlock_irq(&qdio->req_q_lock);
1545 /* NOTE: ONLY TOUCH SYNC req AGAIN ON req->completion. */
1546 wait_for_completion(&req->completion);
1549 (ZFCP_STATUS_FSFREQ_ERROR | ZFCP_STATUS_FSFREQ_DISMISSED))
1551 else if (req->status & ZFCP_STATUS_FSFREQ_XDATAINCOMPLETE)
1555 zfcp_fsf_req_free(req);
1559 spin_unlock_irq(&qdio->req_q_lock);
1563 static void zfcp_fsf_log_port_fc_security(struct zfcp_port *port,
1564 struct zfcp_fsf_req *req)
1566 char mnemonic_old[ZFCP_FSF_MAX_FC_SECURITY_MNEMONIC_LENGTH];
1567 char mnemonic_new[ZFCP_FSF_MAX_FC_SECURITY_MNEMONIC_LENGTH];
1569 if (port->connection_info == port->connection_info_old) {
1570 /* no change, no log nor trace */
1574 zfcp_dbf_hba_fsf_fces("fsfcesp", req, port->wwpn,
1575 port->connection_info_old,
1576 port->connection_info);
1578 zfcp_fsf_scnprint_fc_security(mnemonic_old, sizeof(mnemonic_old),
1579 port->connection_info_old,
1580 ZFCP_FSF_PRINT_FMT_SINGLEITEM);
1581 zfcp_fsf_scnprint_fc_security(mnemonic_new, sizeof(mnemonic_new),
1582 port->connection_info,
1583 ZFCP_FSF_PRINT_FMT_SINGLEITEM);
1585 if (strncmp(mnemonic_old, mnemonic_new,
1586 ZFCP_FSF_MAX_FC_SECURITY_MNEMONIC_LENGTH) == 0) {
1587 /* no change in string representation, no log */
1591 if (port->connection_info_old == 0) {
1593 dev_info(&port->adapter->ccw_device->dev,
1594 "FC Endpoint Security of connection to remote port 0x%16llx enabled: %s\n",
1595 port->wwpn, mnemonic_new);
1596 } else if (port->connection_info == 0) {
1598 dev_warn(&port->adapter->ccw_device->dev,
1599 "FC Endpoint Security of connection to remote port 0x%16llx disabled: was %s\n",
1600 port->wwpn, mnemonic_old);
1603 dev_warn(&port->adapter->ccw_device->dev,
1604 "FC Endpoint Security of connection to remote port 0x%16llx changed: from %s to %s\n",
1605 port->wwpn, mnemonic_old, mnemonic_new);
1609 port->connection_info_old = port->connection_info;
1612 static void zfcp_fsf_log_security_error(const struct device *dev, u32 fsf_sqw0,
1618 * Open Port command error codes
1621 case FSF_SQ_SECURITY_REQUIRED:
1622 dev_warn_ratelimited(dev,
1623 "FC Endpoint Security error: FC security is required but not supported or configured on remote port 0x%016llx\n",
1626 case FSF_SQ_SECURITY_TIMEOUT:
1627 dev_warn_ratelimited(dev,
1628 "FC Endpoint Security error: a timeout prevented opening remote port 0x%016llx\n",
1631 case FSF_SQ_SECURITY_KM_UNAVAILABLE:
1632 dev_warn_ratelimited(dev,
1633 "FC Endpoint Security error: opening remote port 0x%016llx failed because local and external key manager cannot communicate\n",
1636 case FSF_SQ_SECURITY_RKM_UNAVAILABLE:
1637 dev_warn_ratelimited(dev,
1638 "FC Endpoint Security error: opening remote port 0x%016llx failed because it cannot communicate with the external key manager\n",
1641 case FSF_SQ_SECURITY_AUTH_FAILURE:
1642 dev_warn_ratelimited(dev,
1643 "FC Endpoint Security error: the device could not verify the identity of remote port 0x%016llx\n",
1648 * Send FCP command error codes
1651 case FSF_SQ_SECURITY_ENC_FAILURE:
1652 dev_warn_ratelimited(dev,
1653 "FC Endpoint Security error: FC connection to remote port 0x%016llx closed because encryption broke down\n",
1658 * Unknown error codes
1662 dev_warn_ratelimited(dev,
1663 "FC Endpoint Security error: the device issued an unknown error code 0x%08x related to the FC connection to remote port 0x%016llx\n",
1668 static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req *req)
1670 struct zfcp_adapter *adapter = req->adapter;
1671 struct zfcp_port *port = req->data;
1672 struct fsf_qtcb_header *header = &req->qtcb->header;
1673 struct fsf_qtcb_bottom_support *bottom = &req->qtcb->bottom.support;
1674 struct fc_els_flogi *plogi;
1676 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1679 switch (header->fsf_status) {
1680 case FSF_PORT_ALREADY_OPEN:
1682 case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED:
1683 dev_warn(&adapter->ccw_device->dev,
1684 "Not enough FCP adapter resources to open "
1685 "remote port 0x%016Lx\n",
1686 (unsigned long long)port->wwpn);
1687 zfcp_erp_set_port_status(port,
1688 ZFCP_STATUS_COMMON_ERP_FAILED);
1689 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1691 case FSF_SECURITY_ERROR:
1692 zfcp_fsf_log_security_error(&req->adapter->ccw_device->dev,
1693 header->fsf_status_qual.word[0],
1695 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1697 case FSF_ADAPTER_STATUS_AVAILABLE:
1698 switch (header->fsf_status_qual.word[0]) {
1699 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1700 /* no zfcp_fc_test_link() with failed open port */
1702 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1703 case FSF_SQ_NO_RETRY_POSSIBLE:
1704 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1709 port->handle = header->port_handle;
1710 if (adapter->adapter_features & FSF_FEATURE_FC_SECURITY)
1711 port->connection_info = bottom->connection_info;
1713 port->connection_info = 0;
1714 zfcp_fsf_log_port_fc_security(port, req);
1715 atomic_or(ZFCP_STATUS_COMMON_OPEN |
1716 ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
1717 atomic_andnot(ZFCP_STATUS_COMMON_ACCESS_BOXED,
1719 /* check whether D_ID has changed during open */
1721 * FIXME: This check is not airtight, as the FCP channel does
1722 * not monitor closures of target port connections caused on
1723 * the remote side. Thus, they might miss out on invalidating
1724 * locally cached WWPNs (and other N_Port parameters) of gone
1725 * target ports. So, our heroic attempt to make things safe
1726 * could be undermined by 'open port' response data tagged with
1727 * obsolete WWPNs. Another reason to monitor potential
1728 * connection closures ourself at least (by interpreting
1729 * incoming ELS' and unsolicited status). It just crosses my
1730 * mind that one should be able to cross-check by means of
1731 * another GID_PN straight after a port has been opened.
1732 * Alternately, an ADISC/PDISC ELS should suffice, as well.
1734 plogi = (struct fc_els_flogi *) bottom->els;
1735 if (bottom->els1_length >= FSF_PLOGI_MIN_LEN)
1736 zfcp_fc_plogi_evaluate(port, plogi);
1738 case FSF_UNKNOWN_OP_SUBTYPE:
1739 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1744 put_device(&port->dev);
1748 * zfcp_fsf_open_port - create and send open port request
1749 * @erp_action: pointer to struct zfcp_erp_action
1750 * Returns: 0 on success, error otherwise
1752 int zfcp_fsf_open_port(struct zfcp_erp_action *erp_action)
1754 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1755 struct zfcp_port *port = erp_action->port;
1756 struct zfcp_fsf_req *req;
1759 spin_lock_irq(&qdio->req_q_lock);
1760 if (zfcp_qdio_sbal_get(qdio))
1763 req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_PORT_WITH_DID,
1764 SBAL_SFLAGS0_TYPE_READ,
1765 qdio->adapter->pool.erp_req);
1768 retval = PTR_ERR(req);
1772 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1773 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1775 req->handler = zfcp_fsf_open_port_handler;
1776 hton24(req->qtcb->bottom.support.d_id, port->d_id);
1778 req->erp_action = erp_action;
1779 erp_action->fsf_req_id = req->req_id;
1780 get_device(&port->dev);
1782 zfcp_fsf_start_erp_timer(req);
1783 retval = zfcp_fsf_req_send(req);
1785 zfcp_fsf_req_free(req);
1786 erp_action->fsf_req_id = 0;
1787 put_device(&port->dev);
1789 /* NOTE: DO NOT TOUCH req PAST THIS POINT! */
1791 spin_unlock_irq(&qdio->req_q_lock);
1795 static void zfcp_fsf_close_port_handler(struct zfcp_fsf_req *req)
1797 struct zfcp_port *port = req->data;
1799 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1802 switch (req->qtcb->header.fsf_status) {
1803 case FSF_PORT_HANDLE_NOT_VALID:
1804 zfcp_erp_adapter_reopen(port->adapter, 0, "fscph_1");
1805 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1807 case FSF_ADAPTER_STATUS_AVAILABLE:
1810 zfcp_erp_clear_port_status(port, ZFCP_STATUS_COMMON_OPEN);
1816 * zfcp_fsf_close_port - create and send close port request
1817 * @erp_action: pointer to struct zfcp_erp_action
1818 * Returns: 0 on success, error otherwise
1820 int zfcp_fsf_close_port(struct zfcp_erp_action *erp_action)
1822 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1823 struct zfcp_fsf_req *req;
1826 spin_lock_irq(&qdio->req_q_lock);
1827 if (zfcp_qdio_sbal_get(qdio))
1830 req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PORT,
1831 SBAL_SFLAGS0_TYPE_READ,
1832 qdio->adapter->pool.erp_req);
1835 retval = PTR_ERR(req);
1839 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1840 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1842 req->handler = zfcp_fsf_close_port_handler;
1843 req->data = erp_action->port;
1844 req->erp_action = erp_action;
1845 req->qtcb->header.port_handle = erp_action->port->handle;
1846 erp_action->fsf_req_id = req->req_id;
1848 zfcp_fsf_start_erp_timer(req);
1849 retval = zfcp_fsf_req_send(req);
1851 zfcp_fsf_req_free(req);
1852 erp_action->fsf_req_id = 0;
1854 /* NOTE: DO NOT TOUCH req PAST THIS POINT! */
1856 spin_unlock_irq(&qdio->req_q_lock);
1860 static void zfcp_fsf_open_wka_port_handler(struct zfcp_fsf_req *req)
1862 struct zfcp_fc_wka_port *wka_port = req->data;
1863 struct fsf_qtcb_header *header = &req->qtcb->header;
1865 if (req->status & ZFCP_STATUS_FSFREQ_ERROR) {
1866 wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE;
1870 switch (header->fsf_status) {
1871 case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED:
1872 dev_warn(&req->adapter->ccw_device->dev,
1873 "Opening WKA port 0x%x failed\n", wka_port->d_id);
1875 case FSF_ADAPTER_STATUS_AVAILABLE:
1876 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1877 wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE;
1880 wka_port->handle = header->port_handle;
1882 case FSF_PORT_ALREADY_OPEN:
1883 wka_port->status = ZFCP_FC_WKA_PORT_ONLINE;
1886 wake_up(&wka_port->completion_wq);
1890 * zfcp_fsf_open_wka_port - create and send open wka-port request
1891 * @wka_port: pointer to struct zfcp_fc_wka_port
1892 * Returns: 0 on success, error otherwise
1894 int zfcp_fsf_open_wka_port(struct zfcp_fc_wka_port *wka_port)
1896 struct zfcp_qdio *qdio = wka_port->adapter->qdio;
1897 struct zfcp_fsf_req *req;
1898 unsigned long req_id = 0;
1901 spin_lock_irq(&qdio->req_q_lock);
1902 if (zfcp_qdio_sbal_get(qdio))
1905 req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_PORT_WITH_DID,
1906 SBAL_SFLAGS0_TYPE_READ,
1907 qdio->adapter->pool.erp_req);
1910 retval = PTR_ERR(req);
1914 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1915 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1917 req->handler = zfcp_fsf_open_wka_port_handler;
1918 hton24(req->qtcb->bottom.support.d_id, wka_port->d_id);
1919 req->data = wka_port;
1921 req_id = req->req_id;
1923 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1924 retval = zfcp_fsf_req_send(req);
1926 zfcp_fsf_req_free(req);
1927 /* NOTE: DO NOT TOUCH req PAST THIS POINT! */
1929 spin_unlock_irq(&qdio->req_q_lock);
1931 zfcp_dbf_rec_run_wka("fsowp_1", wka_port, req_id);
1935 static void zfcp_fsf_close_wka_port_handler(struct zfcp_fsf_req *req)
1937 struct zfcp_fc_wka_port *wka_port = req->data;
1939 if (req->qtcb->header.fsf_status == FSF_PORT_HANDLE_NOT_VALID) {
1940 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1941 zfcp_erp_adapter_reopen(wka_port->adapter, 0, "fscwph1");
1944 wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE;
1945 wake_up(&wka_port->completion_wq);
1949 * zfcp_fsf_close_wka_port - create and send close wka port request
1950 * @wka_port: WKA port to open
1951 * Returns: 0 on success, error otherwise
1953 int zfcp_fsf_close_wka_port(struct zfcp_fc_wka_port *wka_port)
1955 struct zfcp_qdio *qdio = wka_port->adapter->qdio;
1956 struct zfcp_fsf_req *req;
1957 unsigned long req_id = 0;
1960 spin_lock_irq(&qdio->req_q_lock);
1961 if (zfcp_qdio_sbal_get(qdio))
1964 req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PORT,
1965 SBAL_SFLAGS0_TYPE_READ,
1966 qdio->adapter->pool.erp_req);
1969 retval = PTR_ERR(req);
1973 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1974 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1976 req->handler = zfcp_fsf_close_wka_port_handler;
1977 req->data = wka_port;
1978 req->qtcb->header.port_handle = wka_port->handle;
1980 req_id = req->req_id;
1982 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1983 retval = zfcp_fsf_req_send(req);
1985 zfcp_fsf_req_free(req);
1986 /* NOTE: DO NOT TOUCH req PAST THIS POINT! */
1988 spin_unlock_irq(&qdio->req_q_lock);
1990 zfcp_dbf_rec_run_wka("fscwp_1", wka_port, req_id);
1994 static void zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *req)
1996 struct zfcp_port *port = req->data;
1997 struct fsf_qtcb_header *header = &req->qtcb->header;
1998 struct scsi_device *sdev;
2000 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
2003 switch (header->fsf_status) {
2004 case FSF_PORT_HANDLE_NOT_VALID:
2005 zfcp_erp_adapter_reopen(port->adapter, 0, "fscpph1");
2006 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2008 case FSF_PORT_BOXED:
2009 /* can't use generic zfcp_erp_modify_port_status because
2010 * ZFCP_STATUS_COMMON_OPEN must not be reset for the port */
2011 atomic_andnot(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
2012 shost_for_each_device(sdev, port->adapter->scsi_host)
2013 if (sdev_to_zfcp(sdev)->port == port)
2014 atomic_andnot(ZFCP_STATUS_COMMON_OPEN,
2015 &sdev_to_zfcp(sdev)->status);
2016 zfcp_erp_set_port_status(port, ZFCP_STATUS_COMMON_ACCESS_BOXED);
2017 zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED,
2019 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2021 case FSF_ADAPTER_STATUS_AVAILABLE:
2022 switch (header->fsf_status_qual.word[0]) {
2023 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
2024 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
2025 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2030 /* can't use generic zfcp_erp_modify_port_status because
2031 * ZFCP_STATUS_COMMON_OPEN must not be reset for the port
2033 atomic_andnot(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
2034 shost_for_each_device(sdev, port->adapter->scsi_host)
2035 if (sdev_to_zfcp(sdev)->port == port)
2036 atomic_andnot(ZFCP_STATUS_COMMON_OPEN,
2037 &sdev_to_zfcp(sdev)->status);
2043 * zfcp_fsf_close_physical_port - close physical port
2044 * @erp_action: pointer to struct zfcp_erp_action
2045 * Returns: 0 on success
2047 int zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action)
2049 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
2050 struct zfcp_fsf_req *req;
2053 spin_lock_irq(&qdio->req_q_lock);
2054 if (zfcp_qdio_sbal_get(qdio))
2057 req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PHYSICAL_PORT,
2058 SBAL_SFLAGS0_TYPE_READ,
2059 qdio->adapter->pool.erp_req);
2062 retval = PTR_ERR(req);
2066 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
2067 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
2069 req->data = erp_action->port;
2070 req->qtcb->header.port_handle = erp_action->port->handle;
2071 req->erp_action = erp_action;
2072 req->handler = zfcp_fsf_close_physical_port_handler;
2073 erp_action->fsf_req_id = req->req_id;
2075 zfcp_fsf_start_erp_timer(req);
2076 retval = zfcp_fsf_req_send(req);
2078 zfcp_fsf_req_free(req);
2079 erp_action->fsf_req_id = 0;
2081 /* NOTE: DO NOT TOUCH req PAST THIS POINT! */
2083 spin_unlock_irq(&qdio->req_q_lock);
2087 static void zfcp_fsf_open_lun_handler(struct zfcp_fsf_req *req)
2089 struct zfcp_adapter *adapter = req->adapter;
2090 struct scsi_device *sdev = req->data;
2091 struct zfcp_scsi_dev *zfcp_sdev;
2092 struct fsf_qtcb_header *header = &req->qtcb->header;
2093 union fsf_status_qual *qual = &header->fsf_status_qual;
2095 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
2098 zfcp_sdev = sdev_to_zfcp(sdev);
2100 atomic_andnot(ZFCP_STATUS_COMMON_ACCESS_DENIED |
2101 ZFCP_STATUS_COMMON_ACCESS_BOXED,
2102 &zfcp_sdev->status);
2104 switch (header->fsf_status) {
2106 case FSF_PORT_HANDLE_NOT_VALID:
2107 zfcp_erp_adapter_reopen(adapter, 0, "fsouh_1");
2109 case FSF_LUN_ALREADY_OPEN:
2111 case FSF_PORT_BOXED:
2112 zfcp_erp_set_port_status(zfcp_sdev->port,
2113 ZFCP_STATUS_COMMON_ACCESS_BOXED);
2114 zfcp_erp_port_reopen(zfcp_sdev->port,
2115 ZFCP_STATUS_COMMON_ERP_FAILED, "fsouh_2");
2116 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2118 case FSF_LUN_SHARING_VIOLATION:
2120 dev_warn(&zfcp_sdev->port->adapter->ccw_device->dev,
2121 "LUN 0x%016Lx on port 0x%016Lx is already in "
2122 "use by CSS%d, MIF Image ID %x\n",
2123 zfcp_scsi_dev_lun(sdev),
2124 (unsigned long long)zfcp_sdev->port->wwpn,
2125 qual->fsf_queue_designator.cssid,
2126 qual->fsf_queue_designator.hla);
2127 zfcp_erp_set_lun_status(sdev,
2128 ZFCP_STATUS_COMMON_ERP_FAILED |
2129 ZFCP_STATUS_COMMON_ACCESS_DENIED);
2130 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2132 case FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED:
2133 dev_warn(&adapter->ccw_device->dev,
2134 "No handle is available for LUN "
2135 "0x%016Lx on port 0x%016Lx\n",
2136 (unsigned long long)zfcp_scsi_dev_lun(sdev),
2137 (unsigned long long)zfcp_sdev->port->wwpn);
2138 zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_ERP_FAILED);
2140 case FSF_INVALID_COMMAND_OPTION:
2141 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2143 case FSF_ADAPTER_STATUS_AVAILABLE:
2144 switch (header->fsf_status_qual.word[0]) {
2145 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
2146 zfcp_fc_test_link(zfcp_sdev->port);
2148 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
2149 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2155 zfcp_sdev->lun_handle = header->lun_handle;
2156 atomic_or(ZFCP_STATUS_COMMON_OPEN, &zfcp_sdev->status);
2162 * zfcp_fsf_open_lun - open LUN
2163 * @erp_action: pointer to struct zfcp_erp_action
2164 * Returns: 0 on success, error otherwise
2166 int zfcp_fsf_open_lun(struct zfcp_erp_action *erp_action)
2168 struct zfcp_adapter *adapter = erp_action->adapter;
2169 struct zfcp_qdio *qdio = adapter->qdio;
2170 struct zfcp_fsf_req *req;
2173 spin_lock_irq(&qdio->req_q_lock);
2174 if (zfcp_qdio_sbal_get(qdio))
2177 req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_LUN,
2178 SBAL_SFLAGS0_TYPE_READ,
2179 adapter->pool.erp_req);
2182 retval = PTR_ERR(req);
2186 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
2187 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
2189 req->qtcb->header.port_handle = erp_action->port->handle;
2190 req->qtcb->bottom.support.fcp_lun = zfcp_scsi_dev_lun(erp_action->sdev);
2191 req->handler = zfcp_fsf_open_lun_handler;
2192 req->data = erp_action->sdev;
2193 req->erp_action = erp_action;
2194 erp_action->fsf_req_id = req->req_id;
2196 if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE))
2197 req->qtcb->bottom.support.option = FSF_OPEN_LUN_SUPPRESS_BOXING;
2199 zfcp_fsf_start_erp_timer(req);
2200 retval = zfcp_fsf_req_send(req);
2202 zfcp_fsf_req_free(req);
2203 erp_action->fsf_req_id = 0;
2205 /* NOTE: DO NOT TOUCH req PAST THIS POINT! */
2207 spin_unlock_irq(&qdio->req_q_lock);
2211 static void zfcp_fsf_close_lun_handler(struct zfcp_fsf_req *req)
2213 struct scsi_device *sdev = req->data;
2214 struct zfcp_scsi_dev *zfcp_sdev;
2216 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
2219 zfcp_sdev = sdev_to_zfcp(sdev);
2221 switch (req->qtcb->header.fsf_status) {
2222 case FSF_PORT_HANDLE_NOT_VALID:
2223 zfcp_erp_adapter_reopen(zfcp_sdev->port->adapter, 0, "fscuh_1");
2224 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2226 case FSF_LUN_HANDLE_NOT_VALID:
2227 zfcp_erp_port_reopen(zfcp_sdev->port, 0, "fscuh_2");
2228 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2230 case FSF_PORT_BOXED:
2231 zfcp_erp_set_port_status(zfcp_sdev->port,
2232 ZFCP_STATUS_COMMON_ACCESS_BOXED);
2233 zfcp_erp_port_reopen(zfcp_sdev->port,
2234 ZFCP_STATUS_COMMON_ERP_FAILED, "fscuh_3");
2235 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2237 case FSF_ADAPTER_STATUS_AVAILABLE:
2238 switch (req->qtcb->header.fsf_status_qual.word[0]) {
2239 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
2240 zfcp_fc_test_link(zfcp_sdev->port);
2242 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
2243 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2248 atomic_andnot(ZFCP_STATUS_COMMON_OPEN, &zfcp_sdev->status);
2254 * zfcp_fsf_close_LUN - close LUN
2255 * @erp_action: pointer to erp_action triggering the "close LUN"
2256 * Returns: 0 on success, error otherwise
2258 int zfcp_fsf_close_lun(struct zfcp_erp_action *erp_action)
2260 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
2261 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(erp_action->sdev);
2262 struct zfcp_fsf_req *req;
2265 spin_lock_irq(&qdio->req_q_lock);
2266 if (zfcp_qdio_sbal_get(qdio))
2269 req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_LUN,
2270 SBAL_SFLAGS0_TYPE_READ,
2271 qdio->adapter->pool.erp_req);
2274 retval = PTR_ERR(req);
2278 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
2279 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
2281 req->qtcb->header.port_handle = erp_action->port->handle;
2282 req->qtcb->header.lun_handle = zfcp_sdev->lun_handle;
2283 req->handler = zfcp_fsf_close_lun_handler;
2284 req->data = erp_action->sdev;
2285 req->erp_action = erp_action;
2286 erp_action->fsf_req_id = req->req_id;
2288 zfcp_fsf_start_erp_timer(req);
2289 retval = zfcp_fsf_req_send(req);
2291 zfcp_fsf_req_free(req);
2292 erp_action->fsf_req_id = 0;
2294 /* NOTE: DO NOT TOUCH req PAST THIS POINT! */
2296 spin_unlock_irq(&qdio->req_q_lock);
2300 static void zfcp_fsf_update_lat(struct zfcp_latency_record *lat_rec, u32 lat)
2302 lat_rec->sum += lat;
2303 lat_rec->min = min(lat_rec->min, lat);
2304 lat_rec->max = max(lat_rec->max, lat);
2307 static void zfcp_fsf_req_trace(struct zfcp_fsf_req *req, struct scsi_cmnd *scsi)
2309 struct fsf_qual_latency_info *lat_in;
2310 struct zfcp_latency_cont *lat = NULL;
2311 struct zfcp_scsi_dev *zfcp_sdev;
2312 struct zfcp_blk_drv_data blktrc;
2313 int ticks = req->adapter->timer_ticks;
2315 lat_in = &req->qtcb->prefix.prot_status_qual.latency_info;
2318 blktrc.magic = ZFCP_BLK_DRV_DATA_MAGIC;
2319 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
2320 blktrc.flags |= ZFCP_BLK_REQ_ERROR;
2321 blktrc.inb_usage = 0;
2322 blktrc.outb_usage = req->qdio_req.qdio_outb_usage;
2324 if (req->adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA &&
2325 !(req->status & ZFCP_STATUS_FSFREQ_ERROR)) {
2326 zfcp_sdev = sdev_to_zfcp(scsi->device);
2327 blktrc.flags |= ZFCP_BLK_LAT_VALID;
2328 blktrc.channel_lat = lat_in->channel_lat * ticks;
2329 blktrc.fabric_lat = lat_in->fabric_lat * ticks;
2331 switch (req->qtcb->bottom.io.data_direction) {
2332 case FSF_DATADIR_DIF_READ_STRIP:
2333 case FSF_DATADIR_DIF_READ_CONVERT:
2334 case FSF_DATADIR_READ:
2335 lat = &zfcp_sdev->latencies.read;
2337 case FSF_DATADIR_DIF_WRITE_INSERT:
2338 case FSF_DATADIR_DIF_WRITE_CONVERT:
2339 case FSF_DATADIR_WRITE:
2340 lat = &zfcp_sdev->latencies.write;
2342 case FSF_DATADIR_CMND:
2343 lat = &zfcp_sdev->latencies.cmd;
2348 spin_lock(&zfcp_sdev->latencies.lock);
2349 zfcp_fsf_update_lat(&lat->channel, lat_in->channel_lat);
2350 zfcp_fsf_update_lat(&lat->fabric, lat_in->fabric_lat);
2352 spin_unlock(&zfcp_sdev->latencies.lock);
2356 blk_add_driver_data(scsi->request->q, scsi->request, &blktrc,
2361 * zfcp_fsf_fcp_handler_common() - FCP response handler common to I/O and TMF.
2362 * @req: Pointer to FSF request.
2363 * @sdev: Pointer to SCSI device as request context.
2365 static void zfcp_fsf_fcp_handler_common(struct zfcp_fsf_req *req,
2366 struct scsi_device *sdev)
2368 struct zfcp_scsi_dev *zfcp_sdev;
2369 struct fsf_qtcb_header *header = &req->qtcb->header;
2371 if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR))
2374 zfcp_sdev = sdev_to_zfcp(sdev);
2376 switch (header->fsf_status) {
2377 case FSF_HANDLE_MISMATCH:
2378 case FSF_PORT_HANDLE_NOT_VALID:
2379 zfcp_erp_adapter_reopen(req->adapter, 0, "fssfch1");
2380 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2382 case FSF_FCPLUN_NOT_VALID:
2383 case FSF_LUN_HANDLE_NOT_VALID:
2384 zfcp_erp_port_reopen(zfcp_sdev->port, 0, "fssfch2");
2385 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2387 case FSF_SERVICE_CLASS_NOT_SUPPORTED:
2388 zfcp_fsf_class_not_supp(req);
2390 case FSF_DIRECTION_INDICATOR_NOT_VALID:
2391 dev_err(&req->adapter->ccw_device->dev,
2392 "Incorrect direction %d, LUN 0x%016Lx on port "
2393 "0x%016Lx closed\n",
2394 req->qtcb->bottom.io.data_direction,
2395 (unsigned long long)zfcp_scsi_dev_lun(sdev),
2396 (unsigned long long)zfcp_sdev->port->wwpn);
2397 zfcp_erp_adapter_shutdown(req->adapter, 0, "fssfch3");
2398 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2400 case FSF_CMND_LENGTH_NOT_VALID:
2401 dev_err(&req->adapter->ccw_device->dev,
2402 "Incorrect FCP_CMND length %d, FCP device closed\n",
2403 req->qtcb->bottom.io.fcp_cmnd_length);
2404 zfcp_erp_adapter_shutdown(req->adapter, 0, "fssfch4");
2405 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2407 case FSF_PORT_BOXED:
2408 zfcp_erp_set_port_status(zfcp_sdev->port,
2409 ZFCP_STATUS_COMMON_ACCESS_BOXED);
2410 zfcp_erp_port_reopen(zfcp_sdev->port,
2411 ZFCP_STATUS_COMMON_ERP_FAILED, "fssfch5");
2412 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2415 zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_ACCESS_BOXED);
2416 zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED,
2418 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2420 case FSF_ADAPTER_STATUS_AVAILABLE:
2421 if (header->fsf_status_qual.word[0] ==
2422 FSF_SQ_INVOKE_LINK_TEST_PROCEDURE)
2423 zfcp_fc_test_link(zfcp_sdev->port);
2424 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2426 case FSF_SECURITY_ERROR:
2427 zfcp_fsf_log_security_error(&req->adapter->ccw_device->dev,
2428 header->fsf_status_qual.word[0],
2429 zfcp_sdev->port->wwpn);
2430 zfcp_erp_port_forced_reopen(zfcp_sdev->port, 0, "fssfch7");
2431 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2436 static void zfcp_fsf_fcp_cmnd_handler(struct zfcp_fsf_req *req)
2438 struct scsi_cmnd *scpnt;
2439 struct fcp_resp_with_ext *fcp_rsp;
2440 unsigned long flags;
2442 read_lock_irqsave(&req->adapter->abort_lock, flags);
2445 if (unlikely(!scpnt)) {
2446 read_unlock_irqrestore(&req->adapter->abort_lock, flags);
2450 zfcp_fsf_fcp_handler_common(req, scpnt->device);
2452 if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) {
2453 set_host_byte(scpnt, DID_TRANSPORT_DISRUPTED);
2454 goto skip_fsfstatus;
2457 switch (req->qtcb->header.fsf_status) {
2458 case FSF_INCONSISTENT_PROT_DATA:
2459 case FSF_INVALID_PROT_PARM:
2460 set_host_byte(scpnt, DID_ERROR);
2461 goto skip_fsfstatus;
2462 case FSF_BLOCK_GUARD_CHECK_FAILURE:
2463 zfcp_scsi_dif_sense_error(scpnt, 0x1);
2464 goto skip_fsfstatus;
2465 case FSF_APP_TAG_CHECK_FAILURE:
2466 zfcp_scsi_dif_sense_error(scpnt, 0x2);
2467 goto skip_fsfstatus;
2468 case FSF_REF_TAG_CHECK_FAILURE:
2469 zfcp_scsi_dif_sense_error(scpnt, 0x3);
2470 goto skip_fsfstatus;
2472 BUILD_BUG_ON(sizeof(struct fcp_resp_with_ext) > FSF_FCP_RSP_SIZE);
2473 fcp_rsp = &req->qtcb->bottom.io.fcp_rsp.iu;
2474 zfcp_fc_eval_fcp_rsp(fcp_rsp, scpnt);
2477 zfcp_fsf_req_trace(req, scpnt);
2478 zfcp_dbf_scsi_result(scpnt, req);
2480 scpnt->host_scribble = NULL;
2481 (scpnt->scsi_done) (scpnt);
2483 * We must hold this lock until scsi_done has been called.
2484 * Otherwise we may call scsi_done after abort regarding this
2485 * command has completed.
2486 * Note: scsi_done must not block!
2488 read_unlock_irqrestore(&req->adapter->abort_lock, flags);
2491 static int zfcp_fsf_set_data_dir(struct scsi_cmnd *scsi_cmnd, u32 *data_dir)
2493 switch (scsi_get_prot_op(scsi_cmnd)) {
2494 case SCSI_PROT_NORMAL:
2495 switch (scsi_cmnd->sc_data_direction) {
2497 *data_dir = FSF_DATADIR_CMND;
2499 case DMA_FROM_DEVICE:
2500 *data_dir = FSF_DATADIR_READ;
2503 *data_dir = FSF_DATADIR_WRITE;
2505 case DMA_BIDIRECTIONAL:
2510 case SCSI_PROT_READ_STRIP:
2511 *data_dir = FSF_DATADIR_DIF_READ_STRIP;
2513 case SCSI_PROT_WRITE_INSERT:
2514 *data_dir = FSF_DATADIR_DIF_WRITE_INSERT;
2516 case SCSI_PROT_READ_PASS:
2517 *data_dir = FSF_DATADIR_DIF_READ_CONVERT;
2519 case SCSI_PROT_WRITE_PASS:
2520 *data_dir = FSF_DATADIR_DIF_WRITE_CONVERT;
2530 * zfcp_fsf_fcp_cmnd - initiate an FCP command (for a SCSI command)
2531 * @scsi_cmnd: scsi command to be sent
2533 int zfcp_fsf_fcp_cmnd(struct scsi_cmnd *scsi_cmnd)
2535 struct zfcp_fsf_req *req;
2536 struct fcp_cmnd *fcp_cmnd;
2537 u8 sbtype = SBAL_SFLAGS0_TYPE_READ;
2539 struct scsi_device *sdev = scsi_cmnd->device;
2540 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
2541 struct zfcp_adapter *adapter = zfcp_sdev->port->adapter;
2542 struct zfcp_qdio *qdio = adapter->qdio;
2543 struct fsf_qtcb_bottom_io *io;
2544 unsigned long flags;
2546 if (unlikely(!(atomic_read(&zfcp_sdev->status) &
2547 ZFCP_STATUS_COMMON_UNBLOCKED)))
2550 spin_lock_irqsave(&qdio->req_q_lock, flags);
2551 if (atomic_read(&qdio->req_q_free) <= 0) {
2552 atomic_inc(&qdio->req_q_full);
2556 if (scsi_cmnd->sc_data_direction == DMA_TO_DEVICE)
2557 sbtype = SBAL_SFLAGS0_TYPE_WRITE;
2559 req = zfcp_fsf_req_create(qdio, FSF_QTCB_FCP_CMND,
2560 sbtype, adapter->pool.scsi_req);
2563 retval = PTR_ERR(req);
2567 scsi_cmnd->host_scribble = (unsigned char *) req->req_id;
2569 io = &req->qtcb->bottom.io;
2570 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
2571 req->data = scsi_cmnd;
2572 req->handler = zfcp_fsf_fcp_cmnd_handler;
2573 req->qtcb->header.lun_handle = zfcp_sdev->lun_handle;
2574 req->qtcb->header.port_handle = zfcp_sdev->port->handle;
2575 io->service_class = FSF_CLASS_3;
2576 io->fcp_cmnd_length = FCP_CMND_LEN;
2578 if (scsi_get_prot_op(scsi_cmnd) != SCSI_PROT_NORMAL) {
2579 io->data_block_length = scsi_cmnd->device->sector_size;
2580 io->ref_tag_value = scsi_get_lba(scsi_cmnd) & 0xFFFFFFFF;
2583 if (zfcp_fsf_set_data_dir(scsi_cmnd, &io->data_direction))
2584 goto failed_scsi_cmnd;
2586 BUILD_BUG_ON(sizeof(struct fcp_cmnd) > FSF_FCP_CMND_SIZE);
2587 fcp_cmnd = &req->qtcb->bottom.io.fcp_cmnd.iu;
2588 zfcp_fc_scsi_to_fcp(fcp_cmnd, scsi_cmnd);
2590 if ((scsi_get_prot_op(scsi_cmnd) != SCSI_PROT_NORMAL) &&
2591 scsi_prot_sg_count(scsi_cmnd)) {
2592 zfcp_qdio_set_data_div(qdio, &req->qdio_req,
2593 scsi_prot_sg_count(scsi_cmnd));
2594 retval = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req,
2595 scsi_prot_sglist(scsi_cmnd));
2597 goto failed_scsi_cmnd;
2598 io->prot_data_length = zfcp_qdio_real_bytes(
2599 scsi_prot_sglist(scsi_cmnd));
2602 retval = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req,
2603 scsi_sglist(scsi_cmnd));
2604 if (unlikely(retval))
2605 goto failed_scsi_cmnd;
2607 zfcp_qdio_set_sbale_last(adapter->qdio, &req->qdio_req);
2608 if (zfcp_adapter_multi_buffer_active(adapter))
2609 zfcp_qdio_set_scount(qdio, &req->qdio_req);
2611 retval = zfcp_fsf_req_send(req);
2612 if (unlikely(retval))
2613 goto failed_scsi_cmnd;
2614 /* NOTE: DO NOT TOUCH req PAST THIS POINT! */
2619 zfcp_fsf_req_free(req);
2620 scsi_cmnd->host_scribble = NULL;
2622 spin_unlock_irqrestore(&qdio->req_q_lock, flags);
2626 static void zfcp_fsf_fcp_task_mgmt_handler(struct zfcp_fsf_req *req)
2628 struct scsi_device *sdev = req->data;
2629 struct fcp_resp_with_ext *fcp_rsp;
2630 struct fcp_resp_rsp_info *rsp_info;
2632 zfcp_fsf_fcp_handler_common(req, sdev);
2634 fcp_rsp = &req->qtcb->bottom.io.fcp_rsp.iu;
2635 rsp_info = (struct fcp_resp_rsp_info *) &fcp_rsp[1];
2637 if ((rsp_info->rsp_code != FCP_TMF_CMPL) ||
2638 (req->status & ZFCP_STATUS_FSFREQ_ERROR))
2639 req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED;
2643 * zfcp_fsf_fcp_task_mgmt() - Send SCSI task management command (TMF).
2644 * @sdev: Pointer to SCSI device to send the task management command to.
2645 * @tm_flags: Unsigned byte for task management flags.
2647 * Return: On success pointer to struct zfcp_fsf_req, %NULL otherwise.
2649 struct zfcp_fsf_req *zfcp_fsf_fcp_task_mgmt(struct scsi_device *sdev,
2652 struct zfcp_fsf_req *req = NULL;
2653 struct fcp_cmnd *fcp_cmnd;
2654 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
2655 struct zfcp_qdio *qdio = zfcp_sdev->port->adapter->qdio;
2657 if (unlikely(!(atomic_read(&zfcp_sdev->status) &
2658 ZFCP_STATUS_COMMON_UNBLOCKED)))
2661 spin_lock_irq(&qdio->req_q_lock);
2662 if (zfcp_qdio_sbal_get(qdio))
2665 req = zfcp_fsf_req_create(qdio, FSF_QTCB_FCP_CMND,
2666 SBAL_SFLAGS0_TYPE_WRITE,
2667 qdio->adapter->pool.scsi_req);
2676 req->handler = zfcp_fsf_fcp_task_mgmt_handler;
2677 req->qtcb->header.lun_handle = zfcp_sdev->lun_handle;
2678 req->qtcb->header.port_handle = zfcp_sdev->port->handle;
2679 req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND;
2680 req->qtcb->bottom.io.service_class = FSF_CLASS_3;
2681 req->qtcb->bottom.io.fcp_cmnd_length = FCP_CMND_LEN;
2683 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
2685 fcp_cmnd = &req->qtcb->bottom.io.fcp_cmnd.iu;
2686 zfcp_fc_fcp_tm(fcp_cmnd, sdev, tm_flags);
2688 zfcp_fsf_start_timer(req, ZFCP_FSF_SCSI_ER_TIMEOUT);
2689 if (!zfcp_fsf_req_send(req)) {
2690 /* NOTE: DO NOT TOUCH req, UNTIL IT COMPLETES! */
2694 zfcp_fsf_req_free(req);
2697 spin_unlock_irq(&qdio->req_q_lock);
2702 * zfcp_fsf_reqid_check - validate req_id contained in SBAL returned by QDIO
2703 * @qdio: pointer to struct zfcp_qdio
2704 * @sbal_idx: response queue index of SBAL to be processed
2706 void zfcp_fsf_reqid_check(struct zfcp_qdio *qdio, int sbal_idx)
2708 struct zfcp_adapter *adapter = qdio->adapter;
2709 struct qdio_buffer *sbal = qdio->res_q[sbal_idx];
2710 struct qdio_buffer_element *sbale;
2711 struct zfcp_fsf_req *fsf_req;
2712 unsigned long req_id;
2715 for (idx = 0; idx < QDIO_MAX_ELEMENTS_PER_BUFFER; idx++) {
2717 sbale = &sbal->element[idx];
2718 req_id = sbale->addr;
2719 fsf_req = zfcp_reqlist_find_rm(adapter->req_list, req_id);
2723 * Unknown request means that we have potentially memory
2724 * corruption and must stop the machine immediately.
2726 zfcp_qdio_siosl(adapter);
2727 panic("error: unknown req_id (%lx) on adapter %s.\n",
2728 req_id, dev_name(&adapter->ccw_device->dev));
2731 zfcp_fsf_req_complete(fsf_req);
2733 if (likely(sbale->eflags & SBAL_EFLAGS_LAST_ENTRY))