4
* Implementation of FSF commands.
6
* Copyright IBM Corporation 2002, 2010
9
#define KMSG_COMPONENT "zfcp"
10
#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
12
#include <linux/blktrace_api.h>
13
#include <linux/slab.h>
14
#include <scsi/fc/fc_els.h>
18
#include "zfcp_qdio.h"
19
#include "zfcp_reqlist.h"
21
struct kmem_cache *zfcp_fsf_qtcb_cache;
23
static void zfcp_fsf_request_timeout_handler(unsigned long data)
25
struct zfcp_adapter *adapter = (struct zfcp_adapter *) data;
26
zfcp_qdio_siosl(adapter);
27
zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED,
31
static void zfcp_fsf_start_timer(struct zfcp_fsf_req *fsf_req,
32
unsigned long timeout)
34
fsf_req->timer.function = zfcp_fsf_request_timeout_handler;
35
fsf_req->timer.data = (unsigned long) fsf_req->adapter;
36
fsf_req->timer.expires = jiffies + timeout;
37
add_timer(&fsf_req->timer);
40
static void zfcp_fsf_start_erp_timer(struct zfcp_fsf_req *fsf_req)
42
BUG_ON(!fsf_req->erp_action);
43
fsf_req->timer.function = zfcp_erp_timeout_handler;
44
fsf_req->timer.data = (unsigned long) fsf_req->erp_action;
45
fsf_req->timer.expires = jiffies + 30 * HZ;
46
add_timer(&fsf_req->timer);
49
/* association between FSF command and FSF QTCB type */
50
static u32 fsf_qtcb_type[] = {
51
[FSF_QTCB_FCP_CMND] = FSF_IO_COMMAND,
52
[FSF_QTCB_ABORT_FCP_CMND] = FSF_SUPPORT_COMMAND,
53
[FSF_QTCB_OPEN_PORT_WITH_DID] = FSF_SUPPORT_COMMAND,
54
[FSF_QTCB_OPEN_LUN] = FSF_SUPPORT_COMMAND,
55
[FSF_QTCB_CLOSE_LUN] = FSF_SUPPORT_COMMAND,
56
[FSF_QTCB_CLOSE_PORT] = FSF_SUPPORT_COMMAND,
57
[FSF_QTCB_CLOSE_PHYSICAL_PORT] = FSF_SUPPORT_COMMAND,
58
[FSF_QTCB_SEND_ELS] = FSF_SUPPORT_COMMAND,
59
[FSF_QTCB_SEND_GENERIC] = FSF_SUPPORT_COMMAND,
60
[FSF_QTCB_EXCHANGE_CONFIG_DATA] = FSF_CONFIG_COMMAND,
61
[FSF_QTCB_EXCHANGE_PORT_DATA] = FSF_PORT_COMMAND,
62
[FSF_QTCB_DOWNLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND,
63
[FSF_QTCB_UPLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND
66
static void zfcp_fsf_class_not_supp(struct zfcp_fsf_req *req)
68
dev_err(&req->adapter->ccw_device->dev, "FCP device not "
69
"operational because of an unsupported FC class\n");
70
zfcp_erp_adapter_shutdown(req->adapter, 0, "fscns_1");
71
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
75
* zfcp_fsf_req_free - free memory used by fsf request
76
* @fsf_req: pointer to struct zfcp_fsf_req
78
void zfcp_fsf_req_free(struct zfcp_fsf_req *req)
80
if (likely(req->pool)) {
81
if (likely(req->qtcb))
82
mempool_free(req->qtcb, req->adapter->pool.qtcb_pool);
83
mempool_free(req, req->pool);
87
if (likely(req->qtcb))
88
kmem_cache_free(zfcp_fsf_qtcb_cache, req->qtcb);
92
static void zfcp_fsf_status_read_port_closed(struct zfcp_fsf_req *req)
95
struct fsf_status_read_buffer *sr_buf = req->data;
96
struct zfcp_adapter *adapter = req->adapter;
97
struct zfcp_port *port;
98
int d_id = ntoh24(sr_buf->d_id);
100
read_lock_irqsave(&adapter->port_list_lock, flags);
101
list_for_each_entry(port, &adapter->port_list, list)
102
if (port->d_id == d_id) {
103
zfcp_erp_port_reopen(port, 0, "fssrpc1");
106
read_unlock_irqrestore(&adapter->port_list_lock, flags);
109
static void zfcp_fsf_link_down_info_eval(struct zfcp_fsf_req *req,
110
struct fsf_link_down_info *link_down)
112
struct zfcp_adapter *adapter = req->adapter;
114
if (atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED)
117
atomic_set_mask(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED, &adapter->status);
119
zfcp_scsi_schedule_rports_block(adapter);
124
switch (link_down->error_code) {
125
case FSF_PSQ_LINK_NO_LIGHT:
126
dev_warn(&req->adapter->ccw_device->dev,
127
"There is no light signal from the local "
128
"fibre channel cable\n");
130
case FSF_PSQ_LINK_WRAP_PLUG:
131
dev_warn(&req->adapter->ccw_device->dev,
132
"There is a wrap plug instead of a fibre "
135
case FSF_PSQ_LINK_NO_FCP:
136
dev_warn(&req->adapter->ccw_device->dev,
137
"The adjacent fibre channel node does not "
140
case FSF_PSQ_LINK_FIRMWARE_UPDATE:
141
dev_warn(&req->adapter->ccw_device->dev,
142
"The FCP device is suspended because of a "
143
"firmware update\n");
145
case FSF_PSQ_LINK_INVALID_WWPN:
146
dev_warn(&req->adapter->ccw_device->dev,
147
"The FCP device detected a WWPN that is "
148
"duplicate or not valid\n");
150
case FSF_PSQ_LINK_NO_NPIV_SUPPORT:
151
dev_warn(&req->adapter->ccw_device->dev,
152
"The fibre channel fabric does not support NPIV\n");
154
case FSF_PSQ_LINK_NO_FCP_RESOURCES:
155
dev_warn(&req->adapter->ccw_device->dev,
156
"The FCP adapter cannot support more NPIV ports\n");
158
case FSF_PSQ_LINK_NO_FABRIC_RESOURCES:
159
dev_warn(&req->adapter->ccw_device->dev,
160
"The adjacent switch cannot support "
161
"more NPIV ports\n");
163
case FSF_PSQ_LINK_FABRIC_LOGIN_UNABLE:
164
dev_warn(&req->adapter->ccw_device->dev,
165
"The FCP adapter could not log in to the "
166
"fibre channel fabric\n");
168
case FSF_PSQ_LINK_WWPN_ASSIGNMENT_CORRUPTED:
169
dev_warn(&req->adapter->ccw_device->dev,
170
"The WWPN assignment file on the FCP adapter "
171
"has been damaged\n");
173
case FSF_PSQ_LINK_MODE_TABLE_CURRUPTED:
174
dev_warn(&req->adapter->ccw_device->dev,
175
"The mode table on the FCP adapter "
176
"has been damaged\n");
178
case FSF_PSQ_LINK_NO_WWPN_ASSIGNMENT:
179
dev_warn(&req->adapter->ccw_device->dev,
180
"All NPIV ports on the FCP adapter have "
184
dev_warn(&req->adapter->ccw_device->dev,
185
"The link between the FCP adapter and "
186
"the FC fabric is down\n");
189
zfcp_erp_set_adapter_status(adapter, ZFCP_STATUS_COMMON_ERP_FAILED);
192
static void zfcp_fsf_status_read_link_down(struct zfcp_fsf_req *req)
194
struct fsf_status_read_buffer *sr_buf = req->data;
195
struct fsf_link_down_info *ldi =
196
(struct fsf_link_down_info *) &sr_buf->payload;
198
switch (sr_buf->status_subtype) {
199
case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK:
200
zfcp_fsf_link_down_info_eval(req, ldi);
202
case FSF_STATUS_READ_SUB_FDISC_FAILED:
203
zfcp_fsf_link_down_info_eval(req, ldi);
205
case FSF_STATUS_READ_SUB_FIRMWARE_UPDATE:
206
zfcp_fsf_link_down_info_eval(req, NULL);
210
static void zfcp_fsf_status_read_handler(struct zfcp_fsf_req *req)
212
struct zfcp_adapter *adapter = req->adapter;
213
struct fsf_status_read_buffer *sr_buf = req->data;
215
if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) {
216
zfcp_dbf_hba_fsf_uss("fssrh_1", req);
217
mempool_free(virt_to_page(sr_buf), adapter->pool.sr_data);
218
zfcp_fsf_req_free(req);
222
zfcp_dbf_hba_fsf_uss("fssrh_2", req);
224
switch (sr_buf->status_type) {
225
case FSF_STATUS_READ_PORT_CLOSED:
226
zfcp_fsf_status_read_port_closed(req);
228
case FSF_STATUS_READ_INCOMING_ELS:
229
zfcp_fc_incoming_els(req);
231
case FSF_STATUS_READ_SENSE_DATA_AVAIL:
233
case FSF_STATUS_READ_BIT_ERROR_THRESHOLD:
234
dev_warn(&adapter->ccw_device->dev,
235
"The error threshold for checksum statistics "
236
"has been exceeded\n");
237
zfcp_dbf_hba_bit_err("fssrh_3", req);
239
case FSF_STATUS_READ_LINK_DOWN:
240
zfcp_fsf_status_read_link_down(req);
241
zfcp_fc_enqueue_event(adapter, FCH_EVT_LINKDOWN, 0);
243
case FSF_STATUS_READ_LINK_UP:
244
dev_info(&adapter->ccw_device->dev,
245
"The local link has been restored\n");
246
/* All ports should be marked as ready to run again */
247
zfcp_erp_set_adapter_status(adapter,
248
ZFCP_STATUS_COMMON_RUNNING);
249
zfcp_erp_adapter_reopen(adapter,
250
ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED |
251
ZFCP_STATUS_COMMON_ERP_FAILED,
253
zfcp_fc_enqueue_event(adapter, FCH_EVT_LINKUP, 0);
256
case FSF_STATUS_READ_NOTIFICATION_LOST:
257
if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_ACT_UPDATED)
258
zfcp_cfdc_adapter_access_changed(adapter);
259
if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_INCOMING_ELS)
260
queue_work(adapter->work_queue, &adapter->scan_work);
262
case FSF_STATUS_READ_CFDC_UPDATED:
263
zfcp_cfdc_adapter_access_changed(adapter);
265
case FSF_STATUS_READ_FEATURE_UPDATE_ALERT:
266
adapter->adapter_features = sr_buf->payload.word[0];
270
mempool_free(virt_to_page(sr_buf), adapter->pool.sr_data);
271
zfcp_fsf_req_free(req);
273
atomic_inc(&adapter->stat_miss);
274
queue_work(adapter->work_queue, &adapter->stat_work);
277
static void zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req *req)
279
switch (req->qtcb->header.fsf_status_qual.word[0]) {
280
case FSF_SQ_FCP_RSP_AVAILABLE:
281
case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
282
case FSF_SQ_NO_RETRY_POSSIBLE:
283
case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
285
case FSF_SQ_COMMAND_ABORTED:
287
case FSF_SQ_NO_RECOM:
288
dev_err(&req->adapter->ccw_device->dev,
289
"The FCP adapter reported a problem "
290
"that cannot be recovered\n");
291
zfcp_qdio_siosl(req->adapter);
292
zfcp_erp_adapter_shutdown(req->adapter, 0, "fsfsqe1");
295
/* all non-return stats set FSFREQ_ERROR*/
296
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
299
static void zfcp_fsf_fsfstatus_eval(struct zfcp_fsf_req *req)
301
if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR))
304
switch (req->qtcb->header.fsf_status) {
305
case FSF_UNKNOWN_COMMAND:
306
dev_err(&req->adapter->ccw_device->dev,
307
"The FCP adapter does not recognize the command 0x%x\n",
308
req->qtcb->header.fsf_command);
309
zfcp_erp_adapter_shutdown(req->adapter, 0, "fsfse_1");
310
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
312
case FSF_ADAPTER_STATUS_AVAILABLE:
313
zfcp_fsf_fsfstatus_qual_eval(req);
318
static void zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *req)
320
struct zfcp_adapter *adapter = req->adapter;
321
struct fsf_qtcb *qtcb = req->qtcb;
322
union fsf_prot_status_qual *psq = &qtcb->prefix.prot_status_qual;
324
zfcp_dbf_hba_fsf_response(req);
326
if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) {
327
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
331
switch (qtcb->prefix.prot_status) {
333
case FSF_PROT_FSF_STATUS_PRESENTED:
335
case FSF_PROT_QTCB_VERSION_ERROR:
336
dev_err(&adapter->ccw_device->dev,
337
"QTCB version 0x%x not supported by FCP adapter "
338
"(0x%x to 0x%x)\n", FSF_QTCB_CURRENT_VERSION,
339
psq->word[0], psq->word[1]);
340
zfcp_erp_adapter_shutdown(adapter, 0, "fspse_1");
342
case FSF_PROT_ERROR_STATE:
343
case FSF_PROT_SEQ_NUMB_ERROR:
344
zfcp_erp_adapter_reopen(adapter, 0, "fspse_2");
345
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
347
case FSF_PROT_UNSUPP_QTCB_TYPE:
348
dev_err(&adapter->ccw_device->dev,
349
"The QTCB type is not supported by the FCP adapter\n");
350
zfcp_erp_adapter_shutdown(adapter, 0, "fspse_3");
352
case FSF_PROT_HOST_CONNECTION_INITIALIZING:
353
atomic_set_mask(ZFCP_STATUS_ADAPTER_HOST_CON_INIT,
356
case FSF_PROT_DUPLICATE_REQUEST_ID:
357
dev_err(&adapter->ccw_device->dev,
358
"0x%Lx is an ambiguous request identifier\n",
359
(unsigned long long)qtcb->bottom.support.req_handle);
360
zfcp_erp_adapter_shutdown(adapter, 0, "fspse_4");
362
case FSF_PROT_LINK_DOWN:
363
zfcp_fsf_link_down_info_eval(req, &psq->link_down_info);
364
/* go through reopen to flush pending requests */
365
zfcp_erp_adapter_reopen(adapter, 0, "fspse_6");
367
case FSF_PROT_REEST_QUEUE:
368
/* All ports should be marked as ready to run again */
369
zfcp_erp_set_adapter_status(adapter,
370
ZFCP_STATUS_COMMON_RUNNING);
371
zfcp_erp_adapter_reopen(adapter,
372
ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED |
373
ZFCP_STATUS_COMMON_ERP_FAILED,
377
dev_err(&adapter->ccw_device->dev,
378
"0x%x is not a valid transfer protocol status\n",
379
qtcb->prefix.prot_status);
380
zfcp_qdio_siosl(adapter);
381
zfcp_erp_adapter_shutdown(adapter, 0, "fspse_9");
383
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
387
* zfcp_fsf_req_complete - process completion of a FSF request
388
* @fsf_req: The FSF request that has been completed.
390
* When a request has been completed either from the FCP adapter,
391
* or it has been dismissed due to a queue shutdown, this function
392
* is called to process the completion status and trigger further
393
* events related to the FSF request.
395
static void zfcp_fsf_req_complete(struct zfcp_fsf_req *req)
397
if (unlikely(req->fsf_command == FSF_QTCB_UNSOLICITED_STATUS)) {
398
zfcp_fsf_status_read_handler(req);
402
del_timer(&req->timer);
403
zfcp_fsf_protstatus_eval(req);
404
zfcp_fsf_fsfstatus_eval(req);
408
zfcp_erp_notify(req->erp_action, 0);
410
if (likely(req->status & ZFCP_STATUS_FSFREQ_CLEANUP))
411
zfcp_fsf_req_free(req);
413
complete(&req->completion);
417
* zfcp_fsf_req_dismiss_all - dismiss all fsf requests
418
* @adapter: pointer to struct zfcp_adapter
420
* Never ever call this without shutting down the adapter first.
421
* Otherwise the adapter would continue using and corrupting s390 storage.
422
* Included BUG_ON() call to ensure this is done.
423
* ERP is supposed to be the only user of this function.
425
void zfcp_fsf_req_dismiss_all(struct zfcp_adapter *adapter)
427
struct zfcp_fsf_req *req, *tmp;
428
LIST_HEAD(remove_queue);
430
BUG_ON(atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP);
431
zfcp_reqlist_move(adapter->req_list, &remove_queue);
433
list_for_each_entry_safe(req, tmp, &remove_queue, list) {
434
list_del(&req->list);
435
req->status |= ZFCP_STATUS_FSFREQ_DISMISSED;
436
zfcp_fsf_req_complete(req);
440
static int zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req *req)
442
struct fsf_qtcb_bottom_config *bottom = &req->qtcb->bottom.config;
443
struct zfcp_adapter *adapter = req->adapter;
444
struct Scsi_Host *shost = adapter->scsi_host;
445
struct fc_els_flogi *nsp, *plogi;
447
/* adjust pointers for missing command code */
448
nsp = (struct fc_els_flogi *) ((u8 *)&bottom->nport_serv_param
450
plogi = (struct fc_els_flogi *) ((u8 *)&bottom->plogi_payload
454
memcpy(req->data, bottom, sizeof(*bottom));
456
fc_host_port_name(shost) = nsp->fl_wwpn;
457
fc_host_node_name(shost) = nsp->fl_wwnn;
458
fc_host_port_id(shost) = ntoh24(bottom->s_id);
459
fc_host_speed(shost) = bottom->fc_link_speed;
460
fc_host_supported_classes(shost) = FC_COS_CLASS2 | FC_COS_CLASS3;
462
adapter->hydra_version = bottom->adapter_type;
463
adapter->timer_ticks = bottom->timer_interval & ZFCP_FSF_TIMER_INT_MASK;
464
adapter->stat_read_buf_num = max(bottom->status_read_buf_num,
465
(u16)FSF_STATUS_READS_RECOM);
467
if (fc_host_permanent_port_name(shost) == -1)
468
fc_host_permanent_port_name(shost) = fc_host_port_name(shost);
470
switch (bottom->fc_topology) {
472
adapter->peer_d_id = ntoh24(bottom->peer_d_id);
473
adapter->peer_wwpn = plogi->fl_wwpn;
474
adapter->peer_wwnn = plogi->fl_wwnn;
475
fc_host_port_type(shost) = FC_PORTTYPE_PTP;
477
case FSF_TOPO_FABRIC:
478
fc_host_port_type(shost) = FC_PORTTYPE_NPORT;
481
fc_host_port_type(shost) = FC_PORTTYPE_NLPORT;
484
dev_err(&adapter->ccw_device->dev,
485
"Unknown or unsupported arbitrated loop "
486
"fibre channel topology detected\n");
487
zfcp_erp_adapter_shutdown(adapter, 0, "fsece_1");
491
zfcp_scsi_set_prot(adapter);
496
static void zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *req)
498
struct zfcp_adapter *adapter = req->adapter;
499
struct fsf_qtcb *qtcb = req->qtcb;
500
struct fsf_qtcb_bottom_config *bottom = &qtcb->bottom.config;
501
struct Scsi_Host *shost = adapter->scsi_host;
503
if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
506
adapter->fsf_lic_version = bottom->lic_version;
507
adapter->adapter_features = bottom->adapter_features;
508
adapter->connection_features = bottom->connection_features;
509
adapter->peer_wwpn = 0;
510
adapter->peer_wwnn = 0;
511
adapter->peer_d_id = 0;
513
switch (qtcb->header.fsf_status) {
515
if (zfcp_fsf_exchange_config_evaluate(req))
518
if (bottom->max_qtcb_size < sizeof(struct fsf_qtcb)) {
519
dev_err(&adapter->ccw_device->dev,
520
"FCP adapter maximum QTCB size (%d bytes) "
522
bottom->max_qtcb_size);
523
zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh1");
526
atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK,
529
case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE:
530
fc_host_node_name(shost) = 0;
531
fc_host_port_name(shost) = 0;
532
fc_host_port_id(shost) = 0;
533
fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN;
534
fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN;
535
adapter->hydra_version = 0;
537
zfcp_fsf_link_down_info_eval(req,
538
&qtcb->header.fsf_status_qual.link_down_info);
541
zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh3");
545
if (adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT) {
546
adapter->hardware_version = bottom->hardware_version;
547
memcpy(fc_host_serial_number(shost), bottom->serial_number,
548
min(FC_SERIAL_NUMBER_SIZE, 17));
549
EBCASC(fc_host_serial_number(shost),
550
min(FC_SERIAL_NUMBER_SIZE, 17));
553
if (FSF_QTCB_CURRENT_VERSION < bottom->low_qtcb_version) {
554
dev_err(&adapter->ccw_device->dev,
555
"The FCP adapter only supports newer "
556
"control block versions\n");
557
zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh4");
560
if (FSF_QTCB_CURRENT_VERSION > bottom->high_qtcb_version) {
561
dev_err(&adapter->ccw_device->dev,
562
"The FCP adapter only supports older "
563
"control block versions\n");
564
zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh5");
568
static void zfcp_fsf_exchange_port_evaluate(struct zfcp_fsf_req *req)
570
struct zfcp_adapter *adapter = req->adapter;
571
struct fsf_qtcb_bottom_port *bottom = &req->qtcb->bottom.port;
572
struct Scsi_Host *shost = adapter->scsi_host;
575
memcpy(req->data, bottom, sizeof(*bottom));
577
if (adapter->connection_features & FSF_FEATURE_NPIV_MODE) {
578
fc_host_permanent_port_name(shost) = bottom->wwpn;
579
fc_host_port_type(shost) = FC_PORTTYPE_NPIV;
581
fc_host_permanent_port_name(shost) = fc_host_port_name(shost);
582
fc_host_maxframe_size(shost) = bottom->maximum_frame_size;
583
fc_host_supported_speeds(shost) = bottom->supported_speed;
584
memcpy(fc_host_supported_fc4s(shost), bottom->supported_fc4_types,
586
memcpy(fc_host_active_fc4s(shost), bottom->active_fc4_types,
590
static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *req)
592
struct fsf_qtcb *qtcb = req->qtcb;
594
if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
597
switch (qtcb->header.fsf_status) {
599
zfcp_fsf_exchange_port_evaluate(req);
601
case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE:
602
zfcp_fsf_exchange_port_evaluate(req);
603
zfcp_fsf_link_down_info_eval(req,
604
&qtcb->header.fsf_status_qual.link_down_info);
609
static struct zfcp_fsf_req *zfcp_fsf_alloc(mempool_t *pool)
611
struct zfcp_fsf_req *req;
614
req = mempool_alloc(pool, GFP_ATOMIC);
616
req = kmalloc(sizeof(*req), GFP_ATOMIC);
621
memset(req, 0, sizeof(*req));
626
static struct fsf_qtcb *zfcp_qtcb_alloc(mempool_t *pool)
628
struct fsf_qtcb *qtcb;
631
qtcb = mempool_alloc(pool, GFP_ATOMIC);
633
qtcb = kmem_cache_alloc(zfcp_fsf_qtcb_cache, GFP_ATOMIC);
638
memset(qtcb, 0, sizeof(*qtcb));
642
static struct zfcp_fsf_req *zfcp_fsf_req_create(struct zfcp_qdio *qdio,
643
u32 fsf_cmd, u8 sbtype,
646
struct zfcp_adapter *adapter = qdio->adapter;
647
struct zfcp_fsf_req *req = zfcp_fsf_alloc(pool);
650
return ERR_PTR(-ENOMEM);
652
if (adapter->req_no == 0)
655
INIT_LIST_HEAD(&req->list);
656
init_timer(&req->timer);
657
init_completion(&req->completion);
659
req->adapter = adapter;
660
req->fsf_command = fsf_cmd;
661
req->req_id = adapter->req_no;
663
if (likely(fsf_cmd != FSF_QTCB_UNSOLICITED_STATUS)) {
665
req->qtcb = zfcp_qtcb_alloc(adapter->pool.qtcb_pool);
667
req->qtcb = zfcp_qtcb_alloc(NULL);
669
if (unlikely(!req->qtcb)) {
670
zfcp_fsf_req_free(req);
671
return ERR_PTR(-ENOMEM);
674
req->seq_no = adapter->fsf_req_seq_no;
675
req->qtcb->prefix.req_seq_no = adapter->fsf_req_seq_no;
676
req->qtcb->prefix.req_id = req->req_id;
677
req->qtcb->prefix.ulp_info = 26;
678
req->qtcb->prefix.qtcb_type = fsf_qtcb_type[req->fsf_command];
679
req->qtcb->prefix.qtcb_version = FSF_QTCB_CURRENT_VERSION;
680
req->qtcb->header.req_handle = req->req_id;
681
req->qtcb->header.fsf_command = req->fsf_command;
684
zfcp_qdio_req_init(adapter->qdio, &req->qdio_req, req->req_id, sbtype,
685
req->qtcb, sizeof(struct fsf_qtcb));
690
static int zfcp_fsf_req_send(struct zfcp_fsf_req *req)
692
struct zfcp_adapter *adapter = req->adapter;
693
struct zfcp_qdio *qdio = adapter->qdio;
694
int with_qtcb = (req->qtcb != NULL);
695
int req_id = req->req_id;
697
zfcp_reqlist_add(adapter->req_list, req);
699
req->qdio_req.qdio_outb_usage = atomic_read(&qdio->req_q_free);
700
req->issued = get_clock();
701
if (zfcp_qdio_send(qdio, &req->qdio_req)) {
702
del_timer(&req->timer);
703
/* lookup request again, list might have changed */
704
zfcp_reqlist_find_rm(adapter->req_list, req_id);
705
zfcp_erp_adapter_reopen(adapter, 0, "fsrs__1");
709
/* Don't increase for unsolicited status */
711
adapter->fsf_req_seq_no++;
718
* zfcp_fsf_status_read - send status read request
719
* @adapter: pointer to struct zfcp_adapter
720
* @req_flags: request flags
721
* Returns: 0 on success, ERROR otherwise
723
int zfcp_fsf_status_read(struct zfcp_qdio *qdio)
725
struct zfcp_adapter *adapter = qdio->adapter;
726
struct zfcp_fsf_req *req;
727
struct fsf_status_read_buffer *sr_buf;
731
spin_lock_irq(&qdio->req_q_lock);
732
if (zfcp_qdio_sbal_get(qdio))
735
req = zfcp_fsf_req_create(qdio, FSF_QTCB_UNSOLICITED_STATUS, 0,
736
adapter->pool.status_read_req);
738
retval = PTR_ERR(req);
742
page = mempool_alloc(adapter->pool.sr_data, GFP_ATOMIC);
747
sr_buf = page_address(page);
748
memset(sr_buf, 0, sizeof(*sr_buf));
751
zfcp_qdio_fill_next(qdio, &req->qdio_req, sr_buf, sizeof(*sr_buf));
752
zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
754
retval = zfcp_fsf_req_send(req);
756
goto failed_req_send;
762
mempool_free(virt_to_page(sr_buf), adapter->pool.sr_data);
764
zfcp_dbf_hba_fsf_uss("fssr__1", req);
765
zfcp_fsf_req_free(req);
767
spin_unlock_irq(&qdio->req_q_lock);
771
static void zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req *req)
773
struct scsi_device *sdev = req->data;
774
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
775
union fsf_status_qual *fsq = &req->qtcb->header.fsf_status_qual;
777
if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
780
switch (req->qtcb->header.fsf_status) {
781
case FSF_PORT_HANDLE_NOT_VALID:
782
if (fsq->word[0] == fsq->word[1]) {
783
zfcp_erp_adapter_reopen(zfcp_sdev->port->adapter, 0,
785
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
788
case FSF_LUN_HANDLE_NOT_VALID:
789
if (fsq->word[0] == fsq->word[1]) {
790
zfcp_erp_port_reopen(zfcp_sdev->port, 0, "fsafch2");
791
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
794
case FSF_FCP_COMMAND_DOES_NOT_EXIST:
795
req->status |= ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED;
798
zfcp_erp_set_port_status(zfcp_sdev->port,
799
ZFCP_STATUS_COMMON_ACCESS_BOXED);
800
zfcp_erp_port_reopen(zfcp_sdev->port,
801
ZFCP_STATUS_COMMON_ERP_FAILED, "fsafch3");
802
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
805
zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_ACCESS_BOXED);
806
zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED,
808
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
810
case FSF_ADAPTER_STATUS_AVAILABLE:
811
switch (fsq->word[0]) {
812
case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
813
zfcp_fc_test_link(zfcp_sdev->port);
815
case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
816
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
821
req->status |= ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED;
827
* zfcp_fsf_abort_fcp_cmnd - abort running SCSI command
828
* @scmnd: The SCSI command to abort
829
* Returns: pointer to struct zfcp_fsf_req
832
struct zfcp_fsf_req *zfcp_fsf_abort_fcp_cmnd(struct scsi_cmnd *scmnd)
834
struct zfcp_fsf_req *req = NULL;
835
struct scsi_device *sdev = scmnd->device;
836
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
837
struct zfcp_qdio *qdio = zfcp_sdev->port->adapter->qdio;
838
unsigned long old_req_id = (unsigned long) scmnd->host_scribble;
840
spin_lock_irq(&qdio->req_q_lock);
841
if (zfcp_qdio_sbal_get(qdio))
843
req = zfcp_fsf_req_create(qdio, FSF_QTCB_ABORT_FCP_CMND,
844
SBAL_SFLAGS0_TYPE_READ,
845
qdio->adapter->pool.scsi_abort);
851
if (unlikely(!(atomic_read(&zfcp_sdev->status) &
852
ZFCP_STATUS_COMMON_UNBLOCKED)))
855
zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
858
req->handler = zfcp_fsf_abort_fcp_command_handler;
859
req->qtcb->header.lun_handle = zfcp_sdev->lun_handle;
860
req->qtcb->header.port_handle = zfcp_sdev->port->handle;
861
req->qtcb->bottom.support.req_handle = (u64) old_req_id;
863
zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT);
864
if (!zfcp_fsf_req_send(req))
868
zfcp_fsf_req_free(req);
871
spin_unlock_irq(&qdio->req_q_lock);
875
static void zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *req)
877
struct zfcp_adapter *adapter = req->adapter;
878
struct zfcp_fsf_ct_els *ct = req->data;
879
struct fsf_qtcb_header *header = &req->qtcb->header;
881
ct->status = -EINVAL;
883
if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
886
switch (header->fsf_status) {
888
zfcp_dbf_san_res("fsscth1", req);
891
case FSF_SERVICE_CLASS_NOT_SUPPORTED:
892
zfcp_fsf_class_not_supp(req);
894
case FSF_ADAPTER_STATUS_AVAILABLE:
895
switch (header->fsf_status_qual.word[0]){
896
case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
897
case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
898
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
902
case FSF_ACCESS_DENIED:
905
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
907
case FSF_PORT_HANDLE_NOT_VALID:
908
zfcp_erp_adapter_reopen(adapter, 0, "fsscth1");
910
case FSF_GENERIC_COMMAND_REJECTED:
911
case FSF_PAYLOAD_SIZE_MISMATCH:
912
case FSF_REQUEST_SIZE_TOO_LARGE:
913
case FSF_RESPONSE_SIZE_TOO_LARGE:
914
case FSF_SBAL_MISMATCH:
915
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
921
ct->handler(ct->handler_data);
924
static void zfcp_fsf_setup_ct_els_unchained(struct zfcp_qdio *qdio,
925
struct zfcp_qdio_req *q_req,
926
struct scatterlist *sg_req,
927
struct scatterlist *sg_resp)
929
zfcp_qdio_fill_next(qdio, q_req, sg_virt(sg_req), sg_req->length);
930
zfcp_qdio_fill_next(qdio, q_req, sg_virt(sg_resp), sg_resp->length);
931
zfcp_qdio_set_sbale_last(qdio, q_req);
934
static int zfcp_fsf_setup_ct_els_sbals(struct zfcp_fsf_req *req,
935
struct scatterlist *sg_req,
936
struct scatterlist *sg_resp)
938
struct zfcp_adapter *adapter = req->adapter;
939
struct zfcp_qdio *qdio = adapter->qdio;
940
struct fsf_qtcb *qtcb = req->qtcb;
941
u32 feat = adapter->adapter_features;
943
if (zfcp_adapter_multi_buffer_active(adapter)) {
944
if (zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, sg_req))
946
if (zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, sg_resp))
949
zfcp_qdio_set_data_div(qdio, &req->qdio_req,
950
zfcp_qdio_sbale_count(sg_req));
951
zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
952
zfcp_qdio_set_scount(qdio, &req->qdio_req);
956
/* use single, unchained SBAL if it can hold the request */
957
if (zfcp_qdio_sg_one_sbale(sg_req) && zfcp_qdio_sg_one_sbale(sg_resp)) {
958
zfcp_fsf_setup_ct_els_unchained(qdio, &req->qdio_req,
963
if (!(feat & FSF_FEATURE_ELS_CT_CHAINED_SBALS))
966
if (zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, sg_req))
969
qtcb->bottom.support.req_buf_length = zfcp_qdio_real_bytes(sg_req);
971
zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
972
zfcp_qdio_skip_to_last_sbale(qdio, &req->qdio_req);
974
if (zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, sg_resp))
977
qtcb->bottom.support.resp_buf_length = zfcp_qdio_real_bytes(sg_resp);
979
zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
984
static int zfcp_fsf_setup_ct_els(struct zfcp_fsf_req *req,
985
struct scatterlist *sg_req,
986
struct scatterlist *sg_resp,
987
unsigned int timeout)
991
ret = zfcp_fsf_setup_ct_els_sbals(req, sg_req, sg_resp);
995
/* common settings for ct/gs and els requests */
997
timeout = 255; /* max value accepted by hardware */
998
req->qtcb->bottom.support.service_class = FSF_CLASS_3;
999
req->qtcb->bottom.support.timeout = timeout;
1000
zfcp_fsf_start_timer(req, (timeout + 10) * HZ);
1006
* zfcp_fsf_send_ct - initiate a Generic Service request (FC-GS)
1007
* @ct: pointer to struct zfcp_send_ct with data for request
1008
* @pool: if non-null this mempool is used to allocate struct zfcp_fsf_req
1010
int zfcp_fsf_send_ct(struct zfcp_fc_wka_port *wka_port,
1011
struct zfcp_fsf_ct_els *ct, mempool_t *pool,
1012
unsigned int timeout)
1014
struct zfcp_qdio *qdio = wka_port->adapter->qdio;
1015
struct zfcp_fsf_req *req;
1018
spin_lock_irq(&qdio->req_q_lock);
1019
if (zfcp_qdio_sbal_get(qdio))
1022
req = zfcp_fsf_req_create(qdio, FSF_QTCB_SEND_GENERIC,
1023
SBAL_SFLAGS0_TYPE_WRITE_READ, pool);
1030
req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1031
ret = zfcp_fsf_setup_ct_els(req, ct->req, ct->resp, timeout);
1035
req->handler = zfcp_fsf_send_ct_handler;
1036
req->qtcb->header.port_handle = wka_port->handle;
1039
zfcp_dbf_san_req("fssct_1", req, wka_port->d_id);
1041
ret = zfcp_fsf_req_send(req);
1048
zfcp_fsf_req_free(req);
1050
spin_unlock_irq(&qdio->req_q_lock);
1054
static void zfcp_fsf_send_els_handler(struct zfcp_fsf_req *req)
1056
struct zfcp_fsf_ct_els *send_els = req->data;
1057
struct zfcp_port *port = send_els->port;
1058
struct fsf_qtcb_header *header = &req->qtcb->header;
1060
send_els->status = -EINVAL;
1062
if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1063
goto skip_fsfstatus;
1065
switch (header->fsf_status) {
1067
zfcp_dbf_san_res("fsselh1", req);
1068
send_els->status = 0;
1070
case FSF_SERVICE_CLASS_NOT_SUPPORTED:
1071
zfcp_fsf_class_not_supp(req);
1073
case FSF_ADAPTER_STATUS_AVAILABLE:
1074
switch (header->fsf_status_qual.word[0]){
1075
case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1076
case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1077
case FSF_SQ_RETRY_IF_POSSIBLE:
1078
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1082
case FSF_ELS_COMMAND_REJECTED:
1083
case FSF_PAYLOAD_SIZE_MISMATCH:
1084
case FSF_REQUEST_SIZE_TOO_LARGE:
1085
case FSF_RESPONSE_SIZE_TOO_LARGE:
1087
case FSF_ACCESS_DENIED:
1089
zfcp_cfdc_port_denied(port, &header->fsf_status_qual);
1090
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1093
case FSF_SBAL_MISMATCH:
1094
/* should never occur, avoided in zfcp_fsf_send_els */
1097
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1101
if (send_els->handler)
1102
send_els->handler(send_els->handler_data);
1106
* zfcp_fsf_send_els - initiate an ELS command (FC-FS)
1107
* @els: pointer to struct zfcp_send_els with data for the command
1109
int zfcp_fsf_send_els(struct zfcp_adapter *adapter, u32 d_id,
1110
struct zfcp_fsf_ct_els *els, unsigned int timeout)
1112
struct zfcp_fsf_req *req;
1113
struct zfcp_qdio *qdio = adapter->qdio;
1116
spin_lock_irq(&qdio->req_q_lock);
1117
if (zfcp_qdio_sbal_get(qdio))
1120
req = zfcp_fsf_req_create(qdio, FSF_QTCB_SEND_ELS,
1121
SBAL_SFLAGS0_TYPE_WRITE_READ, NULL);
1128
req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1130
if (!zfcp_adapter_multi_buffer_active(adapter))
1131
zfcp_qdio_sbal_limit(qdio, &req->qdio_req, 2);
1133
ret = zfcp_fsf_setup_ct_els(req, els->req, els->resp, timeout);
1138
hton24(req->qtcb->bottom.support.d_id, d_id);
1139
req->handler = zfcp_fsf_send_els_handler;
1142
zfcp_dbf_san_req("fssels1", req, d_id);
1144
ret = zfcp_fsf_req_send(req);
1151
zfcp_fsf_req_free(req);
1153
spin_unlock_irq(&qdio->req_q_lock);
1157
int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action)
1159
struct zfcp_fsf_req *req;
1160
struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1163
spin_lock_irq(&qdio->req_q_lock);
1164
if (zfcp_qdio_sbal_get(qdio))
1167
req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_CONFIG_DATA,
1168
SBAL_SFLAGS0_TYPE_READ,
1169
qdio->adapter->pool.erp_req);
1172
retval = PTR_ERR(req);
1176
req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1177
zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1179
req->qtcb->bottom.config.feature_selection =
1181
FSF_FEATURE_LUN_SHARING |
1182
FSF_FEATURE_NOTIFICATION_LOST |
1183
FSF_FEATURE_UPDATE_ALERT;
1184
req->erp_action = erp_action;
1185
req->handler = zfcp_fsf_exchange_config_data_handler;
1186
erp_action->fsf_req_id = req->req_id;
1188
zfcp_fsf_start_erp_timer(req);
1189
retval = zfcp_fsf_req_send(req);
1191
zfcp_fsf_req_free(req);
1192
erp_action->fsf_req_id = 0;
1195
spin_unlock_irq(&qdio->req_q_lock);
1199
int zfcp_fsf_exchange_config_data_sync(struct zfcp_qdio *qdio,
1200
struct fsf_qtcb_bottom_config *data)
1202
struct zfcp_fsf_req *req = NULL;
1205
spin_lock_irq(&qdio->req_q_lock);
1206
if (zfcp_qdio_sbal_get(qdio))
1209
req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_CONFIG_DATA,
1210
SBAL_SFLAGS0_TYPE_READ, NULL);
1213
retval = PTR_ERR(req);
1217
zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1218
req->handler = zfcp_fsf_exchange_config_data_handler;
1220
req->qtcb->bottom.config.feature_selection =
1222
FSF_FEATURE_LUN_SHARING |
1223
FSF_FEATURE_NOTIFICATION_LOST |
1224
FSF_FEATURE_UPDATE_ALERT;
1229
zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1230
retval = zfcp_fsf_req_send(req);
1231
spin_unlock_irq(&qdio->req_q_lock);
1233
wait_for_completion(&req->completion);
1235
zfcp_fsf_req_free(req);
1239
spin_unlock_irq(&qdio->req_q_lock);
1244
* zfcp_fsf_exchange_port_data - request information about local port
1245
* @erp_action: ERP action for the adapter for which port data is requested
1246
* Returns: 0 on success, error otherwise
1248
int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action)
1250
struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1251
struct zfcp_fsf_req *req;
1254
if (!(qdio->adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT))
1257
spin_lock_irq(&qdio->req_q_lock);
1258
if (zfcp_qdio_sbal_get(qdio))
1261
req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_PORT_DATA,
1262
SBAL_SFLAGS0_TYPE_READ,
1263
qdio->adapter->pool.erp_req);
1266
retval = PTR_ERR(req);
1270
req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1271
zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1273
req->handler = zfcp_fsf_exchange_port_data_handler;
1274
req->erp_action = erp_action;
1275
erp_action->fsf_req_id = req->req_id;
1277
zfcp_fsf_start_erp_timer(req);
1278
retval = zfcp_fsf_req_send(req);
1280
zfcp_fsf_req_free(req);
1281
erp_action->fsf_req_id = 0;
1284
spin_unlock_irq(&qdio->req_q_lock);
1289
* zfcp_fsf_exchange_port_data_sync - request information about local port
1290
* @qdio: pointer to struct zfcp_qdio
1291
* @data: pointer to struct fsf_qtcb_bottom_port
1292
* Returns: 0 on success, error otherwise
1294
int zfcp_fsf_exchange_port_data_sync(struct zfcp_qdio *qdio,
1295
struct fsf_qtcb_bottom_port *data)
1297
struct zfcp_fsf_req *req = NULL;
1300
if (!(qdio->adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT))
1303
spin_lock_irq(&qdio->req_q_lock);
1304
if (zfcp_qdio_sbal_get(qdio))
1307
req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_PORT_DATA,
1308
SBAL_SFLAGS0_TYPE_READ, NULL);
1311
retval = PTR_ERR(req);
1318
zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1320
req->handler = zfcp_fsf_exchange_port_data_handler;
1321
zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1322
retval = zfcp_fsf_req_send(req);
1323
spin_unlock_irq(&qdio->req_q_lock);
1326
wait_for_completion(&req->completion);
1328
zfcp_fsf_req_free(req);
1333
spin_unlock_irq(&qdio->req_q_lock);
1337
static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req *req)
1339
struct zfcp_port *port = req->data;
1340
struct fsf_qtcb_header *header = &req->qtcb->header;
1341
struct fc_els_flogi *plogi;
1343
if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1346
switch (header->fsf_status) {
1347
case FSF_PORT_ALREADY_OPEN:
1349
case FSF_ACCESS_DENIED:
1350
zfcp_cfdc_port_denied(port, &header->fsf_status_qual);
1351
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1353
case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED:
1354
dev_warn(&req->adapter->ccw_device->dev,
1355
"Not enough FCP adapter resources to open "
1356
"remote port 0x%016Lx\n",
1357
(unsigned long long)port->wwpn);
1358
zfcp_erp_set_port_status(port,
1359
ZFCP_STATUS_COMMON_ERP_FAILED);
1360
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1362
case FSF_ADAPTER_STATUS_AVAILABLE:
1363
switch (header->fsf_status_qual.word[0]) {
1364
case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1365
case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1366
case FSF_SQ_NO_RETRY_POSSIBLE:
1367
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1372
port->handle = header->port_handle;
1373
atomic_set_mask(ZFCP_STATUS_COMMON_OPEN |
1374
ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
1375
atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED |
1376
ZFCP_STATUS_COMMON_ACCESS_BOXED,
1378
/* check whether D_ID has changed during open */
1380
* FIXME: This check is not airtight, as the FCP channel does
1381
* not monitor closures of target port connections caused on
1382
* the remote side. Thus, they might miss out on invalidating
1383
* locally cached WWPNs (and other N_Port parameters) of gone
1384
* target ports. So, our heroic attempt to make things safe
1385
* could be undermined by 'open port' response data tagged with
1386
* obsolete WWPNs. Another reason to monitor potential
1387
* connection closures ourself at least (by interpreting
1388
* incoming ELS' and unsolicited status). It just crosses my
1389
* mind that one should be able to cross-check by means of
1390
* another GID_PN straight after a port has been opened.
1391
* Alternately, an ADISC/PDISC ELS should suffice, as well.
1393
plogi = (struct fc_els_flogi *) req->qtcb->bottom.support.els;
1394
if (req->qtcb->bottom.support.els1_length >=
1396
zfcp_fc_plogi_evaluate(port, plogi);
1398
case FSF_UNKNOWN_OP_SUBTYPE:
1399
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1404
put_device(&port->dev);
1408
* zfcp_fsf_open_port - create and send open port request
1409
* @erp_action: pointer to struct zfcp_erp_action
1410
* Returns: 0 on success, error otherwise
1412
int zfcp_fsf_open_port(struct zfcp_erp_action *erp_action)
1414
struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1415
struct zfcp_port *port = erp_action->port;
1416
struct zfcp_fsf_req *req;
1419
spin_lock_irq(&qdio->req_q_lock);
1420
if (zfcp_qdio_sbal_get(qdio))
1423
req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_PORT_WITH_DID,
1424
SBAL_SFLAGS0_TYPE_READ,
1425
qdio->adapter->pool.erp_req);
1428
retval = PTR_ERR(req);
1432
req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1433
zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1435
req->handler = zfcp_fsf_open_port_handler;
1436
hton24(req->qtcb->bottom.support.d_id, port->d_id);
1438
req->erp_action = erp_action;
1439
erp_action->fsf_req_id = req->req_id;
1440
get_device(&port->dev);
1442
zfcp_fsf_start_erp_timer(req);
1443
retval = zfcp_fsf_req_send(req);
1445
zfcp_fsf_req_free(req);
1446
erp_action->fsf_req_id = 0;
1447
put_device(&port->dev);
1450
spin_unlock_irq(&qdio->req_q_lock);
1454
static void zfcp_fsf_close_port_handler(struct zfcp_fsf_req *req)
1456
struct zfcp_port *port = req->data;
1458
if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1461
switch (req->qtcb->header.fsf_status) {
1462
case FSF_PORT_HANDLE_NOT_VALID:
1463
zfcp_erp_adapter_reopen(port->adapter, 0, "fscph_1");
1464
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1466
case FSF_ADAPTER_STATUS_AVAILABLE:
1469
zfcp_erp_clear_port_status(port, ZFCP_STATUS_COMMON_OPEN);
1475
* zfcp_fsf_close_port - create and send close port request
1476
* @erp_action: pointer to struct zfcp_erp_action
1477
* Returns: 0 on success, error otherwise
1479
int zfcp_fsf_close_port(struct zfcp_erp_action *erp_action)
1481
struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1482
struct zfcp_fsf_req *req;
1485
spin_lock_irq(&qdio->req_q_lock);
1486
if (zfcp_qdio_sbal_get(qdio))
1489
req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PORT,
1490
SBAL_SFLAGS0_TYPE_READ,
1491
qdio->adapter->pool.erp_req);
1494
retval = PTR_ERR(req);
1498
req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1499
zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1501
req->handler = zfcp_fsf_close_port_handler;
1502
req->data = erp_action->port;
1503
req->erp_action = erp_action;
1504
req->qtcb->header.port_handle = erp_action->port->handle;
1505
erp_action->fsf_req_id = req->req_id;
1507
zfcp_fsf_start_erp_timer(req);
1508
retval = zfcp_fsf_req_send(req);
1510
zfcp_fsf_req_free(req);
1511
erp_action->fsf_req_id = 0;
1514
spin_unlock_irq(&qdio->req_q_lock);
1518
static void zfcp_fsf_open_wka_port_handler(struct zfcp_fsf_req *req)
1520
struct zfcp_fc_wka_port *wka_port = req->data;
1521
struct fsf_qtcb_header *header = &req->qtcb->header;
1523
if (req->status & ZFCP_STATUS_FSFREQ_ERROR) {
1524
wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE;
1528
switch (header->fsf_status) {
1529
case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED:
1530
dev_warn(&req->adapter->ccw_device->dev,
1531
"Opening WKA port 0x%x failed\n", wka_port->d_id);
1533
case FSF_ADAPTER_STATUS_AVAILABLE:
1534
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1536
case FSF_ACCESS_DENIED:
1537
wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE;
1540
wka_port->handle = header->port_handle;
1542
case FSF_PORT_ALREADY_OPEN:
1543
wka_port->status = ZFCP_FC_WKA_PORT_ONLINE;
1546
wake_up(&wka_port->completion_wq);
1550
* zfcp_fsf_open_wka_port - create and send open wka-port request
1551
* @wka_port: pointer to struct zfcp_fc_wka_port
1552
* Returns: 0 on success, error otherwise
1554
int zfcp_fsf_open_wka_port(struct zfcp_fc_wka_port *wka_port)
1556
struct zfcp_qdio *qdio = wka_port->adapter->qdio;
1557
struct zfcp_fsf_req *req;
1560
spin_lock_irq(&qdio->req_q_lock);
1561
if (zfcp_qdio_sbal_get(qdio))
1564
req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_PORT_WITH_DID,
1565
SBAL_SFLAGS0_TYPE_READ,
1566
qdio->adapter->pool.erp_req);
1569
retval = PTR_ERR(req);
1573
req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1574
zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1576
req->handler = zfcp_fsf_open_wka_port_handler;
1577
hton24(req->qtcb->bottom.support.d_id, wka_port->d_id);
1578
req->data = wka_port;
1580
zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1581
retval = zfcp_fsf_req_send(req);
1583
zfcp_fsf_req_free(req);
1585
spin_unlock_irq(&qdio->req_q_lock);
1589
static void zfcp_fsf_close_wka_port_handler(struct zfcp_fsf_req *req)
1591
struct zfcp_fc_wka_port *wka_port = req->data;
1593
if (req->qtcb->header.fsf_status == FSF_PORT_HANDLE_NOT_VALID) {
1594
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1595
zfcp_erp_adapter_reopen(wka_port->adapter, 0, "fscwph1");
1598
wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE;
1599
wake_up(&wka_port->completion_wq);
1603
* zfcp_fsf_close_wka_port - create and send close wka port request
1604
* @wka_port: WKA port to open
1605
* Returns: 0 on success, error otherwise
1607
int zfcp_fsf_close_wka_port(struct zfcp_fc_wka_port *wka_port)
1609
struct zfcp_qdio *qdio = wka_port->adapter->qdio;
1610
struct zfcp_fsf_req *req;
1613
spin_lock_irq(&qdio->req_q_lock);
1614
if (zfcp_qdio_sbal_get(qdio))
1617
req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PORT,
1618
SBAL_SFLAGS0_TYPE_READ,
1619
qdio->adapter->pool.erp_req);
1622
retval = PTR_ERR(req);
1626
req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1627
zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1629
req->handler = zfcp_fsf_close_wka_port_handler;
1630
req->data = wka_port;
1631
req->qtcb->header.port_handle = wka_port->handle;
1633
zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1634
retval = zfcp_fsf_req_send(req);
1636
zfcp_fsf_req_free(req);
1638
spin_unlock_irq(&qdio->req_q_lock);
1642
static void zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *req)
1644
struct zfcp_port *port = req->data;
1645
struct fsf_qtcb_header *header = &req->qtcb->header;
1646
struct scsi_device *sdev;
1648
if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1651
switch (header->fsf_status) {
1652
case FSF_PORT_HANDLE_NOT_VALID:
1653
zfcp_erp_adapter_reopen(port->adapter, 0, "fscpph1");
1654
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1656
case FSF_ACCESS_DENIED:
1657
zfcp_cfdc_port_denied(port, &header->fsf_status_qual);
1659
case FSF_PORT_BOXED:
1660
/* can't use generic zfcp_erp_modify_port_status because
1661
* ZFCP_STATUS_COMMON_OPEN must not be reset for the port */
1662
atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
1663
shost_for_each_device(sdev, port->adapter->scsi_host)
1664
if (sdev_to_zfcp(sdev)->port == port)
1665
atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN,
1666
&sdev_to_zfcp(sdev)->status);
1667
zfcp_erp_set_port_status(port, ZFCP_STATUS_COMMON_ACCESS_BOXED);
1668
zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED,
1670
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1672
case FSF_ADAPTER_STATUS_AVAILABLE:
1673
switch (header->fsf_status_qual.word[0]) {
1674
case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1676
case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1677
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1682
/* can't use generic zfcp_erp_modify_port_status because
1683
* ZFCP_STATUS_COMMON_OPEN must not be reset for the port
1685
atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
1686
shost_for_each_device(sdev, port->adapter->scsi_host)
1687
if (sdev_to_zfcp(sdev)->port == port)
1688
atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN,
1689
&sdev_to_zfcp(sdev)->status);
1695
* zfcp_fsf_close_physical_port - close physical port
1696
* @erp_action: pointer to struct zfcp_erp_action
1697
* Returns: 0 on success
1699
int zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action)
1701
struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1702
struct zfcp_fsf_req *req;
1705
spin_lock_irq(&qdio->req_q_lock);
1706
if (zfcp_qdio_sbal_get(qdio))
1709
req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PHYSICAL_PORT,
1710
SBAL_SFLAGS0_TYPE_READ,
1711
qdio->adapter->pool.erp_req);
1714
retval = PTR_ERR(req);
1718
req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1719
zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1721
req->data = erp_action->port;
1722
req->qtcb->header.port_handle = erp_action->port->handle;
1723
req->erp_action = erp_action;
1724
req->handler = zfcp_fsf_close_physical_port_handler;
1725
erp_action->fsf_req_id = req->req_id;
1727
zfcp_fsf_start_erp_timer(req);
1728
retval = zfcp_fsf_req_send(req);
1730
zfcp_fsf_req_free(req);
1731
erp_action->fsf_req_id = 0;
1734
spin_unlock_irq(&qdio->req_q_lock);
1738
static void zfcp_fsf_open_lun_handler(struct zfcp_fsf_req *req)
1740
struct zfcp_adapter *adapter = req->adapter;
1741
struct scsi_device *sdev = req->data;
1742
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
1743
struct fsf_qtcb_header *header = &req->qtcb->header;
1744
struct fsf_qtcb_bottom_support *bottom = &req->qtcb->bottom.support;
1746
if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1749
atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED |
1750
ZFCP_STATUS_COMMON_ACCESS_BOXED |
1751
ZFCP_STATUS_LUN_SHARED |
1752
ZFCP_STATUS_LUN_READONLY,
1753
&zfcp_sdev->status);
1755
switch (header->fsf_status) {
1757
case FSF_PORT_HANDLE_NOT_VALID:
1758
zfcp_erp_adapter_reopen(adapter, 0, "fsouh_1");
1760
case FSF_LUN_ALREADY_OPEN:
1762
case FSF_ACCESS_DENIED:
1763
zfcp_cfdc_lun_denied(sdev, &header->fsf_status_qual);
1764
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1766
case FSF_PORT_BOXED:
1767
zfcp_erp_set_port_status(zfcp_sdev->port,
1768
ZFCP_STATUS_COMMON_ACCESS_BOXED);
1769
zfcp_erp_port_reopen(zfcp_sdev->port,
1770
ZFCP_STATUS_COMMON_ERP_FAILED, "fsouh_2");
1771
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1773
case FSF_LUN_SHARING_VIOLATION:
1774
zfcp_cfdc_lun_shrng_vltn(sdev, &header->fsf_status_qual);
1775
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1777
case FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED:
1778
dev_warn(&adapter->ccw_device->dev,
1779
"No handle is available for LUN "
1780
"0x%016Lx on port 0x%016Lx\n",
1781
(unsigned long long)zfcp_scsi_dev_lun(sdev),
1782
(unsigned long long)zfcp_sdev->port->wwpn);
1783
zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_ERP_FAILED);
1785
case FSF_INVALID_COMMAND_OPTION:
1786
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1788
case FSF_ADAPTER_STATUS_AVAILABLE:
1789
switch (header->fsf_status_qual.word[0]) {
1790
case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1791
zfcp_fc_test_link(zfcp_sdev->port);
1793
case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1794
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1800
zfcp_sdev->lun_handle = header->lun_handle;
1801
atomic_set_mask(ZFCP_STATUS_COMMON_OPEN, &zfcp_sdev->status);
1802
zfcp_cfdc_open_lun_eval(sdev, bottom);
1808
* zfcp_fsf_open_lun - open LUN
1809
* @erp_action: pointer to struct zfcp_erp_action
1810
* Returns: 0 on success, error otherwise
1812
int zfcp_fsf_open_lun(struct zfcp_erp_action *erp_action)
1814
struct zfcp_adapter *adapter = erp_action->adapter;
1815
struct zfcp_qdio *qdio = adapter->qdio;
1816
struct zfcp_fsf_req *req;
1819
spin_lock_irq(&qdio->req_q_lock);
1820
if (zfcp_qdio_sbal_get(qdio))
1823
req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_LUN,
1824
SBAL_SFLAGS0_TYPE_READ,
1825
adapter->pool.erp_req);
1828
retval = PTR_ERR(req);
1832
req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1833
zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1835
req->qtcb->header.port_handle = erp_action->port->handle;
1836
req->qtcb->bottom.support.fcp_lun = zfcp_scsi_dev_lun(erp_action->sdev);
1837
req->handler = zfcp_fsf_open_lun_handler;
1838
req->data = erp_action->sdev;
1839
req->erp_action = erp_action;
1840
erp_action->fsf_req_id = req->req_id;
1842
if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE))
1843
req->qtcb->bottom.support.option = FSF_OPEN_LUN_SUPPRESS_BOXING;
1845
zfcp_fsf_start_erp_timer(req);
1846
retval = zfcp_fsf_req_send(req);
1848
zfcp_fsf_req_free(req);
1849
erp_action->fsf_req_id = 0;
1852
spin_unlock_irq(&qdio->req_q_lock);
1856
static void zfcp_fsf_close_lun_handler(struct zfcp_fsf_req *req)
1858
struct scsi_device *sdev = req->data;
1859
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
1861
if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1864
switch (req->qtcb->header.fsf_status) {
1865
case FSF_PORT_HANDLE_NOT_VALID:
1866
zfcp_erp_adapter_reopen(zfcp_sdev->port->adapter, 0, "fscuh_1");
1867
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1869
case FSF_LUN_HANDLE_NOT_VALID:
1870
zfcp_erp_port_reopen(zfcp_sdev->port, 0, "fscuh_2");
1871
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1873
case FSF_PORT_BOXED:
1874
zfcp_erp_set_port_status(zfcp_sdev->port,
1875
ZFCP_STATUS_COMMON_ACCESS_BOXED);
1876
zfcp_erp_port_reopen(zfcp_sdev->port,
1877
ZFCP_STATUS_COMMON_ERP_FAILED, "fscuh_3");
1878
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1880
case FSF_ADAPTER_STATUS_AVAILABLE:
1881
switch (req->qtcb->header.fsf_status_qual.word[0]) {
1882
case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1883
zfcp_fc_test_link(zfcp_sdev->port);
1885
case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1886
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1891
atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, &zfcp_sdev->status);
1897
* zfcp_fsf_close_LUN - close LUN
1898
* @erp_action: pointer to erp_action triggering the "close LUN"
1899
* Returns: 0 on success, error otherwise
1901
int zfcp_fsf_close_lun(struct zfcp_erp_action *erp_action)
1903
struct zfcp_qdio *qdio = erp_action->adapter->qdio;
1904
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(erp_action->sdev);
1905
struct zfcp_fsf_req *req;
1908
spin_lock_irq(&qdio->req_q_lock);
1909
if (zfcp_qdio_sbal_get(qdio))
1912
req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_LUN,
1913
SBAL_SFLAGS0_TYPE_READ,
1914
qdio->adapter->pool.erp_req);
1917
retval = PTR_ERR(req);
1921
req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
1922
zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
1924
req->qtcb->header.port_handle = erp_action->port->handle;
1925
req->qtcb->header.lun_handle = zfcp_sdev->lun_handle;
1926
req->handler = zfcp_fsf_close_lun_handler;
1927
req->data = erp_action->sdev;
1928
req->erp_action = erp_action;
1929
erp_action->fsf_req_id = req->req_id;
1931
zfcp_fsf_start_erp_timer(req);
1932
retval = zfcp_fsf_req_send(req);
1934
zfcp_fsf_req_free(req);
1935
erp_action->fsf_req_id = 0;
1938
spin_unlock_irq(&qdio->req_q_lock);
1942
static void zfcp_fsf_update_lat(struct fsf_latency_record *lat_rec, u32 lat)
1944
lat_rec->sum += lat;
1945
lat_rec->min = min(lat_rec->min, lat);
1946
lat_rec->max = max(lat_rec->max, lat);
1949
static void zfcp_fsf_req_trace(struct zfcp_fsf_req *req, struct scsi_cmnd *scsi)
1951
struct fsf_qual_latency_info *lat_in;
1952
struct latency_cont *lat = NULL;
1953
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scsi->device);
1954
struct zfcp_blk_drv_data blktrc;
1955
int ticks = req->adapter->timer_ticks;
1957
lat_in = &req->qtcb->prefix.prot_status_qual.latency_info;
1960
blktrc.magic = ZFCP_BLK_DRV_DATA_MAGIC;
1961
if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1962
blktrc.flags |= ZFCP_BLK_REQ_ERROR;
1963
blktrc.inb_usage = 0;
1964
blktrc.outb_usage = req->qdio_req.qdio_outb_usage;
1966
if (req->adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA &&
1967
!(req->status & ZFCP_STATUS_FSFREQ_ERROR)) {
1968
blktrc.flags |= ZFCP_BLK_LAT_VALID;
1969
blktrc.channel_lat = lat_in->channel_lat * ticks;
1970
blktrc.fabric_lat = lat_in->fabric_lat * ticks;
1972
switch (req->qtcb->bottom.io.data_direction) {
1973
case FSF_DATADIR_DIF_READ_STRIP:
1974
case FSF_DATADIR_DIF_READ_CONVERT:
1975
case FSF_DATADIR_READ:
1976
lat = &zfcp_sdev->latencies.read;
1978
case FSF_DATADIR_DIF_WRITE_INSERT:
1979
case FSF_DATADIR_DIF_WRITE_CONVERT:
1980
case FSF_DATADIR_WRITE:
1981
lat = &zfcp_sdev->latencies.write;
1983
case FSF_DATADIR_CMND:
1984
lat = &zfcp_sdev->latencies.cmd;
1989
spin_lock(&zfcp_sdev->latencies.lock);
1990
zfcp_fsf_update_lat(&lat->channel, lat_in->channel_lat);
1991
zfcp_fsf_update_lat(&lat->fabric, lat_in->fabric_lat);
1993
spin_unlock(&zfcp_sdev->latencies.lock);
1997
blk_add_driver_data(scsi->request->q, scsi->request, &blktrc,
2001
static void zfcp_fsf_fcp_handler_common(struct zfcp_fsf_req *req)
2003
struct scsi_cmnd *scmnd = req->data;
2004
struct scsi_device *sdev = scmnd->device;
2005
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
2006
struct fsf_qtcb_header *header = &req->qtcb->header;
2008
if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR))
2011
switch (header->fsf_status) {
2012
case FSF_HANDLE_MISMATCH:
2013
case FSF_PORT_HANDLE_NOT_VALID:
2014
zfcp_erp_adapter_reopen(zfcp_sdev->port->adapter, 0, "fssfch1");
2015
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2017
case FSF_FCPLUN_NOT_VALID:
2018
case FSF_LUN_HANDLE_NOT_VALID:
2019
zfcp_erp_port_reopen(zfcp_sdev->port, 0, "fssfch2");
2020
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2022
case FSF_SERVICE_CLASS_NOT_SUPPORTED:
2023
zfcp_fsf_class_not_supp(req);
2025
case FSF_ACCESS_DENIED:
2026
zfcp_cfdc_lun_denied(sdev, &header->fsf_status_qual);
2027
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2029
case FSF_DIRECTION_INDICATOR_NOT_VALID:
2030
dev_err(&req->adapter->ccw_device->dev,
2031
"Incorrect direction %d, LUN 0x%016Lx on port "
2032
"0x%016Lx closed\n",
2033
req->qtcb->bottom.io.data_direction,
2034
(unsigned long long)zfcp_scsi_dev_lun(sdev),
2035
(unsigned long long)zfcp_sdev->port->wwpn);
2036
zfcp_erp_adapter_shutdown(zfcp_sdev->port->adapter, 0,
2038
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2040
case FSF_CMND_LENGTH_NOT_VALID:
2041
dev_err(&req->adapter->ccw_device->dev,
2042
"Incorrect CDB length %d, LUN 0x%016Lx on "
2043
"port 0x%016Lx closed\n",
2044
req->qtcb->bottom.io.fcp_cmnd_length,
2045
(unsigned long long)zfcp_scsi_dev_lun(sdev),
2046
(unsigned long long)zfcp_sdev->port->wwpn);
2047
zfcp_erp_adapter_shutdown(zfcp_sdev->port->adapter, 0,
2049
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2051
case FSF_PORT_BOXED:
2052
zfcp_erp_set_port_status(zfcp_sdev->port,
2053
ZFCP_STATUS_COMMON_ACCESS_BOXED);
2054
zfcp_erp_port_reopen(zfcp_sdev->port,
2055
ZFCP_STATUS_COMMON_ERP_FAILED, "fssfch5");
2056
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2059
zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_ACCESS_BOXED);
2060
zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED,
2062
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2064
case FSF_ADAPTER_STATUS_AVAILABLE:
2065
if (header->fsf_status_qual.word[0] ==
2066
FSF_SQ_INVOKE_LINK_TEST_PROCEDURE)
2067
zfcp_fc_test_link(zfcp_sdev->port);
2068
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2073
static void zfcp_fsf_fcp_cmnd_handler(struct zfcp_fsf_req *req)
2075
struct scsi_cmnd *scpnt;
2076
struct fcp_resp_with_ext *fcp_rsp;
2077
unsigned long flags;
2079
read_lock_irqsave(&req->adapter->abort_lock, flags);
2082
if (unlikely(!scpnt)) {
2083
read_unlock_irqrestore(&req->adapter->abort_lock, flags);
2087
zfcp_fsf_fcp_handler_common(req);
2089
if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) {
2090
set_host_byte(scpnt, DID_TRANSPORT_DISRUPTED);
2091
goto skip_fsfstatus;
2094
switch (req->qtcb->header.fsf_status) {
2095
case FSF_INCONSISTENT_PROT_DATA:
2096
case FSF_INVALID_PROT_PARM:
2097
set_host_byte(scpnt, DID_ERROR);
2098
goto skip_fsfstatus;
2099
case FSF_BLOCK_GUARD_CHECK_FAILURE:
2100
zfcp_scsi_dif_sense_error(scpnt, 0x1);
2101
goto skip_fsfstatus;
2102
case FSF_APP_TAG_CHECK_FAILURE:
2103
zfcp_scsi_dif_sense_error(scpnt, 0x2);
2104
goto skip_fsfstatus;
2105
case FSF_REF_TAG_CHECK_FAILURE:
2106
zfcp_scsi_dif_sense_error(scpnt, 0x3);
2107
goto skip_fsfstatus;
2109
fcp_rsp = (struct fcp_resp_with_ext *) &req->qtcb->bottom.io.fcp_rsp;
2110
zfcp_fc_eval_fcp_rsp(fcp_rsp, scpnt);
2113
zfcp_fsf_req_trace(req, scpnt);
2114
zfcp_dbf_scsi_result(scpnt, req);
2116
scpnt->host_scribble = NULL;
2117
(scpnt->scsi_done) (scpnt);
2119
* We must hold this lock until scsi_done has been called.
2120
* Otherwise we may call scsi_done after abort regarding this
2121
* command has completed.
2122
* Note: scsi_done must not block!
2124
read_unlock_irqrestore(&req->adapter->abort_lock, flags);
2127
static int zfcp_fsf_set_data_dir(struct scsi_cmnd *scsi_cmnd, u32 *data_dir)
2129
switch (scsi_get_prot_op(scsi_cmnd)) {
2130
case SCSI_PROT_NORMAL:
2131
switch (scsi_cmnd->sc_data_direction) {
2133
*data_dir = FSF_DATADIR_CMND;
2135
case DMA_FROM_DEVICE:
2136
*data_dir = FSF_DATADIR_READ;
2139
*data_dir = FSF_DATADIR_WRITE;
2141
case DMA_BIDIRECTIONAL:
2146
case SCSI_PROT_READ_STRIP:
2147
*data_dir = FSF_DATADIR_DIF_READ_STRIP;
2149
case SCSI_PROT_WRITE_INSERT:
2150
*data_dir = FSF_DATADIR_DIF_WRITE_INSERT;
2152
case SCSI_PROT_READ_PASS:
2153
*data_dir = FSF_DATADIR_DIF_READ_CONVERT;
2155
case SCSI_PROT_WRITE_PASS:
2156
*data_dir = FSF_DATADIR_DIF_WRITE_CONVERT;
2166
* zfcp_fsf_fcp_cmnd - initiate an FCP command (for a SCSI command)
2167
* @scsi_cmnd: scsi command to be sent
2169
int zfcp_fsf_fcp_cmnd(struct scsi_cmnd *scsi_cmnd)
2171
struct zfcp_fsf_req *req;
2172
struct fcp_cmnd *fcp_cmnd;
2173
u8 sbtype = SBAL_SFLAGS0_TYPE_READ;
2175
struct scsi_device *sdev = scsi_cmnd->device;
2176
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
2177
struct zfcp_adapter *adapter = zfcp_sdev->port->adapter;
2178
struct zfcp_qdio *qdio = adapter->qdio;
2179
struct fsf_qtcb_bottom_io *io;
2180
unsigned long flags;
2182
if (unlikely(!(atomic_read(&zfcp_sdev->status) &
2183
ZFCP_STATUS_COMMON_UNBLOCKED)))
2186
spin_lock_irqsave(&qdio->req_q_lock, flags);
2187
if (atomic_read(&qdio->req_q_free) <= 0) {
2188
atomic_inc(&qdio->req_q_full);
2192
if (scsi_cmnd->sc_data_direction == DMA_TO_DEVICE)
2193
sbtype = SBAL_SFLAGS0_TYPE_WRITE;
2195
req = zfcp_fsf_req_create(qdio, FSF_QTCB_FCP_CMND,
2196
sbtype, adapter->pool.scsi_req);
2199
retval = PTR_ERR(req);
2203
scsi_cmnd->host_scribble = (unsigned char *) req->req_id;
2205
io = &req->qtcb->bottom.io;
2206
req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
2207
req->data = scsi_cmnd;
2208
req->handler = zfcp_fsf_fcp_cmnd_handler;
2209
req->qtcb->header.lun_handle = zfcp_sdev->lun_handle;
2210
req->qtcb->header.port_handle = zfcp_sdev->port->handle;
2211
io->service_class = FSF_CLASS_3;
2212
io->fcp_cmnd_length = FCP_CMND_LEN;
2214
if (scsi_get_prot_op(scsi_cmnd) != SCSI_PROT_NORMAL) {
2215
io->data_block_length = scsi_cmnd->device->sector_size;
2216
io->ref_tag_value = scsi_get_lba(scsi_cmnd) & 0xFFFFFFFF;
2219
if (zfcp_fsf_set_data_dir(scsi_cmnd, &io->data_direction))
2220
goto failed_scsi_cmnd;
2222
fcp_cmnd = (struct fcp_cmnd *) &req->qtcb->bottom.io.fcp_cmnd;
2223
zfcp_fc_scsi_to_fcp(fcp_cmnd, scsi_cmnd, 0);
2225
if (scsi_prot_sg_count(scsi_cmnd)) {
2226
zfcp_qdio_set_data_div(qdio, &req->qdio_req,
2227
scsi_prot_sg_count(scsi_cmnd));
2228
retval = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req,
2229
scsi_prot_sglist(scsi_cmnd));
2231
goto failed_scsi_cmnd;
2232
io->prot_data_length = zfcp_qdio_real_bytes(
2233
scsi_prot_sglist(scsi_cmnd));
2236
retval = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req,
2237
scsi_sglist(scsi_cmnd));
2238
if (unlikely(retval))
2239
goto failed_scsi_cmnd;
2241
zfcp_qdio_set_sbale_last(adapter->qdio, &req->qdio_req);
2242
if (zfcp_adapter_multi_buffer_active(adapter))
2243
zfcp_qdio_set_scount(qdio, &req->qdio_req);
2245
retval = zfcp_fsf_req_send(req);
2246
if (unlikely(retval))
2247
goto failed_scsi_cmnd;
2252
zfcp_fsf_req_free(req);
2253
scsi_cmnd->host_scribble = NULL;
2255
spin_unlock_irqrestore(&qdio->req_q_lock, flags);
2259
static void zfcp_fsf_fcp_task_mgmt_handler(struct zfcp_fsf_req *req)
2261
struct fcp_resp_with_ext *fcp_rsp;
2262
struct fcp_resp_rsp_info *rsp_info;
2264
zfcp_fsf_fcp_handler_common(req);
2266
fcp_rsp = (struct fcp_resp_with_ext *) &req->qtcb->bottom.io.fcp_rsp;
2267
rsp_info = (struct fcp_resp_rsp_info *) &fcp_rsp[1];
2269
if ((rsp_info->rsp_code != FCP_TMF_CMPL) ||
2270
(req->status & ZFCP_STATUS_FSFREQ_ERROR))
2271
req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED;
2275
* zfcp_fsf_fcp_task_mgmt - send SCSI task management command
2276
* @scmnd: SCSI command to send the task management command for
2277
* @tm_flags: unsigned byte for task management flags
2278
* Returns: on success pointer to struct fsf_req, NULL otherwise
2280
struct zfcp_fsf_req *zfcp_fsf_fcp_task_mgmt(struct scsi_cmnd *scmnd,
2283
struct zfcp_fsf_req *req = NULL;
2284
struct fcp_cmnd *fcp_cmnd;
2285
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scmnd->device);
2286
struct zfcp_qdio *qdio = zfcp_sdev->port->adapter->qdio;
2288
if (unlikely(!(atomic_read(&zfcp_sdev->status) &
2289
ZFCP_STATUS_COMMON_UNBLOCKED)))
2292
spin_lock_irq(&qdio->req_q_lock);
2293
if (zfcp_qdio_sbal_get(qdio))
2296
req = zfcp_fsf_req_create(qdio, FSF_QTCB_FCP_CMND,
2297
SBAL_SFLAGS0_TYPE_WRITE,
2298
qdio->adapter->pool.scsi_req);
2306
req->handler = zfcp_fsf_fcp_task_mgmt_handler;
2307
req->qtcb->header.lun_handle = zfcp_sdev->lun_handle;
2308
req->qtcb->header.port_handle = zfcp_sdev->port->handle;
2309
req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND;
2310
req->qtcb->bottom.io.service_class = FSF_CLASS_3;
2311
req->qtcb->bottom.io.fcp_cmnd_length = FCP_CMND_LEN;
2313
zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
2315
fcp_cmnd = (struct fcp_cmnd *) &req->qtcb->bottom.io.fcp_cmnd;
2316
zfcp_fc_scsi_to_fcp(fcp_cmnd, scmnd, tm_flags);
2318
zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT);
2319
if (!zfcp_fsf_req_send(req))
2322
zfcp_fsf_req_free(req);
2325
spin_unlock_irq(&qdio->req_q_lock);
2329
static void zfcp_fsf_control_file_handler(struct zfcp_fsf_req *req)
2334
* zfcp_fsf_control_file - control file upload/download
2335
* @adapter: pointer to struct zfcp_adapter
2336
* @fsf_cfdc: pointer to struct zfcp_fsf_cfdc
2337
* Returns: on success pointer to struct zfcp_fsf_req, NULL otherwise
2339
struct zfcp_fsf_req *zfcp_fsf_control_file(struct zfcp_adapter *adapter,
2340
struct zfcp_fsf_cfdc *fsf_cfdc)
2342
struct zfcp_qdio *qdio = adapter->qdio;
2343
struct zfcp_fsf_req *req = NULL;
2344
struct fsf_qtcb_bottom_support *bottom;
2348
if (!(adapter->adapter_features & FSF_FEATURE_CFDC))
2349
return ERR_PTR(-EOPNOTSUPP);
2351
switch (fsf_cfdc->command) {
2352
case FSF_QTCB_DOWNLOAD_CONTROL_FILE:
2353
direction = SBAL_SFLAGS0_TYPE_WRITE;
2355
case FSF_QTCB_UPLOAD_CONTROL_FILE:
2356
direction = SBAL_SFLAGS0_TYPE_READ;
2359
return ERR_PTR(-EINVAL);
2362
spin_lock_irq(&qdio->req_q_lock);
2363
if (zfcp_qdio_sbal_get(qdio))
2366
req = zfcp_fsf_req_create(qdio, fsf_cfdc->command, direction, NULL);
2372
req->handler = zfcp_fsf_control_file_handler;
2374
bottom = &req->qtcb->bottom.support;
2375
bottom->operation_subtype = FSF_CFDC_OPERATION_SUBTYPE;
2376
bottom->option = fsf_cfdc->option;
2378
retval = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, fsf_cfdc->sg);
2381
(zfcp_qdio_real_bytes(fsf_cfdc->sg) != ZFCP_CFDC_MAX_SIZE)) {
2382
zfcp_fsf_req_free(req);
2386
zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
2387
if (zfcp_adapter_multi_buffer_active(adapter))
2388
zfcp_qdio_set_scount(qdio, &req->qdio_req);
2390
zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
2391
retval = zfcp_fsf_req_send(req);
2393
spin_unlock_irq(&qdio->req_q_lock);
2396
wait_for_completion(&req->completion);
2399
return ERR_PTR(retval);
2403
* zfcp_fsf_reqid_check - validate req_id contained in SBAL returned by QDIO
2404
* @adapter: pointer to struct zfcp_adapter
2405
* @sbal_idx: response queue index of SBAL to be processed
2407
void zfcp_fsf_reqid_check(struct zfcp_qdio *qdio, int sbal_idx)
2409
struct zfcp_adapter *adapter = qdio->adapter;
2410
struct qdio_buffer *sbal = qdio->res_q[sbal_idx];
2411
struct qdio_buffer_element *sbale;
2412
struct zfcp_fsf_req *fsf_req;
2413
unsigned long req_id;
2416
for (idx = 0; idx < QDIO_MAX_ELEMENTS_PER_BUFFER; idx++) {
2418
sbale = &sbal->element[idx];
2419
req_id = (unsigned long) sbale->addr;
2420
fsf_req = zfcp_reqlist_find_rm(adapter->req_list, req_id);
2424
* Unknown request means that we have potentially memory
2425
* corruption and must stop the machine immediately.
2427
zfcp_qdio_siosl(adapter);
2428
panic("error: unknown req_id (%lx) on adapter %s.\n",
2429
req_id, dev_name(&adapter->ccw_device->dev));
2432
fsf_req->qdio_req.sbal_response = sbal_idx;
2433
zfcp_fsf_req_complete(fsf_req);
2435
if (likely(sbale->eflags & SBAL_EFLAGS_LAST_ENTRY))
2440
struct zfcp_fsf_req *zfcp_fsf_get_req(struct zfcp_qdio *qdio,
2441
struct qdio_buffer *sbal)
2443
struct qdio_buffer_element *sbale = &sbal->element[0];
2444
u64 req_id = (unsigned long) sbale->addr;
2446
return zfcp_reqlist_find(qdio->adapter->req_list, req_id);