summaryrefslogtreecommitdiffstats
path: root/drivers/message/fusion/mptfc.c
blob: b5f03ad81568c84bbaca7eb7fad41a2a967a93f0 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
/*
 *  linux/drivers/message/fusion/mptfc.c
 *      For use with LSI PCI chip/adapter(s)
 *      running LSI Fusion MPT (Message Passing Technology) firmware.
 *
 *  Copyright (c) 1999-2008 LSI Corporation
 *  (mailto:DL-MPTFusionLinux@lsi.com)
 *
 */
/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
/*
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; version 2 of the License.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    NO WARRANTY
    THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
    CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
    LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
    MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
    solely responsible for determining the appropriateness of using and
    distributing the Program and assumes all risks associated with its
    exercise of rights under this Agreement, including but not limited to
    the risks and costs of program errors, damage to or loss of data,
    programs or equipment, and unavailability or interruption of operations.

    DISCLAIMER OF LIABILITY
    NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
    DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
    DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
    ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
    TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
    USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
    HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/
/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/errno.h>
#include <linux/kdev_t.h>
#include <linux/blkdev.h>
#include <linux/delay.h>	/* for mdelay */
#include <linux/interrupt.h>	/* needed for in_interrupt() proto */
#include <linux/reboot.h>	/* notifier code */
#include <linux/workqueue.h>
#include <linux/sort.h>
#include <linux/slab.h>

#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_tcq.h>
#include <scsi/scsi_transport_fc.h>

#include "mptbase.h"
#include "mptscsih.h"

/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
#define my_NAME		"Fusion MPT FC Host driver"
#define my_VERSION	MPT_LINUX_VERSION_COMMON
#define MYNAM		"mptfc"

MODULE_AUTHOR(MODULEAUTHOR);
MODULE_DESCRIPTION(my_NAME);
MODULE_LICENSE("GPL");
MODULE_VERSION(my_VERSION);

/* Command line args */
#define MPTFC_DEV_LOSS_TMO (60)
static int mptfc_dev_loss_tmo = MPTFC_DEV_LOSS_TMO;	/* reasonable default */
module_param(mptfc_dev_loss_tmo, int, 0);
MODULE_PARM_DESC(mptfc_dev_loss_tmo, " Initial time the driver programs the "
    				     " transport to wait for an rport to "
				     " return following a device loss event."
				     "  Default=60.");

/* scsi-mid layer global parmeter is max_report_luns, which is 511 */
#define MPTFC_MAX_LUN (16895)
static int max_lun = MPTFC_MAX_LUN;
module_param(max_lun, int, 0);
MODULE_PARM_DESC(max_lun, " max lun, default=16895 ");

static u8	mptfcDoneCtx = MPT_MAX_PROTOCOL_DRIVERS;
static u8	mptfcTaskCtx = MPT_MAX_PROTOCOL_DRIVERS;
static u8	mptfcInternalCtx = MPT_MAX_PROTOCOL_DRIVERS;

static int mptfc_target_alloc(struct scsi_target *starget);
static int mptfc_slave_alloc(struct scsi_device *sdev);
static int mptfc_qcmd(struct scsi_cmnd *SCpnt,
		      void (*done)(struct scsi_cmnd *));
static void mptfc_target_destroy(struct scsi_target *starget);
static void mptfc_set_rport_loss_tmo(struct fc_rport *rport, uint32_t timeout);
static void __devexit mptfc_remove(struct pci_dev *pdev);
static int mptfc_abort(struct scsi_cmnd *SCpnt);
static int mptfc_dev_reset(struct scsi_cmnd *SCpnt);
static int mptfc_bus_reset(struct scsi_cmnd *SCpnt);
static int mptfc_host_reset(struct scsi_cmnd *SCpnt);

static struct scsi_host_template mptfc_driver_template = {
	.module				= THIS_MODULE,
	.proc_name			= "mptfc",
	.proc_info			= mptscsih_proc_info,
	.name				= "MPT FC Host",
	.info				= mptscsih_info,
	.queuecommand			= mptfc_qcmd,
	.target_alloc			= mptfc_target_alloc,
	.slave_alloc			= mptfc_slave_alloc,
	.slave_configure		= mptscsih_slave_configure,
	.target_destroy			= mptfc_target_destroy,
	.slave_destroy			= mptscsih_slave_destroy,
	.change_queue_depth 		= mptscsih_change_queue_depth,
	.eh_abort_handler		= mptfc_abort,
	.eh_device_reset_handler	= mptfc_dev_reset,
	.eh_bus_reset_handler		= mptfc_bus_reset,
	.eh_host_reset_handler		= mptfc_host_reset,
	.bios_param			= mptscsih_bios_param,
	.can_queue			= MPT_FC_CAN_QUEUE,
	.this_id			= -1,
	.sg_tablesize			= MPT_SCSI_SG_DEPTH,
	.max_sectors			= 8192,
	.cmd_per_lun			= 7,
	.use_clustering			= ENABLE_CLUSTERING,
	.shost_attrs			= mptscsih_host_attrs,
};

/****************************************************************************
 * Supported hardware
 */

static struct pci_device_id mptfc_pci_table[] = {
	{ PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC909,
		PCI_ANY_ID, PCI_ANY_ID },
	{ PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC919,
		PCI_ANY_ID, PCI_ANY_ID },
	{ PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC929,
		PCI_ANY_ID, PCI_ANY_ID },
	{ PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC919X,
		PCI_ANY_ID, PCI_ANY_ID },
	{ PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC929X,
		PCI_ANY_ID, PCI_ANY_ID },
	{ PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC939X,
		PCI_ANY_ID, PCI_ANY_ID },
	{ PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC949X,
		PCI_ANY_ID, PCI_ANY_ID },
	{ PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC949E,
		PCI_ANY_ID, PCI_ANY_ID },
	{ PCI_VENDOR_ID_BROCADE, MPI_MANUFACTPAGE_DEVICEID_FC949E,
		PCI_ANY_ID, PCI_ANY_ID },
	{0}	/* Terminating entry */
};
MODULE_DEVICE_TABLE(pci, mptfc_pci_table);

static struct scsi_transport_template *mptfc_transport_template = NULL;

static struct fc_function_template mptfc_transport_functions = {
	.dd_fcrport_size = 8,
	.show_host_node_name = 1,
	.show_host_port_name = 1,
	.show_host_supported_classes = 1,
	.show_host_port_id = 1,
	.show_rport_supported_classes = 1,
	.show_starget_node_name = 1,
	.show_starget_port_name = 1,
	.show_starget_port_id = 1,
	.set_rport_dev_loss_tmo = mptfc_set_rport_loss_tmo,
	.show_rport_dev_loss_tmo = 1,
	.show_host_supported_speeds = 1,
	.show_host_maxframe_size = 1,
	.show_host_speed = 1,
	.show_host_fabric_name = 1,
	.show_host_port_type = 1,
	.show_host_port_state = 1,
	.show_host_symbolic_name = 1,
};

static int
mptfc_block_error_handler(struct scsi_cmnd *SCpnt,
			  int (*func)(struct scsi_cmnd *SCpnt),
			  const char *caller)
{
	MPT_SCSI_HOST		*hd;
	struct scsi_device	*sdev = SCpnt->device;
	struct Scsi_Host	*shost = sdev->host;
	struct fc_rport		*rport = starget_to_rport(scsi_target(sdev));
	unsigned long		flags;
	int			ready;
	MPT_ADAPTER 		*ioc;
	int			loops = 40;	/* seconds */

	hd = shost_priv(SCpnt->device->host);
	ioc = hd->ioc;
	spin_lock_irqsave(shost->host_lock, flags);
	while ((ready = fc_remote_port_chkready(rport) >> 16) == DID_IMM_RETRY
	 || (loops > 0 && ioc->active == 0)) {
		spin_unlock_irqrestore(shost->host_lock, flags);
		dfcprintk (ioc, printk(MYIOC_s_DEBUG_FMT
			"mptfc_block_error_handler.%d: %d:%d, port status is "
			"%x, active flag %d, deferring %s recovery.\n",
			ioc->name, ioc->sh->host_no,
			SCpnt->device->id, SCpnt->device->lun,
			ready, ioc->active, caller));
		msleep(1000);
		spin_lock_irqsave(shost->host_lock, flags);
		loops --;
	}
	spin_unlock_irqrestore(shost->host_lock, flags);

	if (ready == DID_NO_CONNECT || !SCpnt->device->hostdata
	 || ioc->active == 0) {
		dfcprintk (ioc, printk(MYIOC_s_DEBUG_FMT
			"%s.%d: %d:%d, failing recovery, "
			"port state %x, active %d, vdevice %p.\n", caller,
			ioc->name, ioc->sh->host_no,
			SCpnt->device->id, SCpnt->device->lun, ready,
			ioc->active, SCpnt->device->hostdata));
		return FAILED;
	}
	dfcprintk (ioc, printk(MYIOC_s_DEBUG_FMT
		"%s.%d: %d:%d, executing recovery.\n", caller,
		ioc->name, ioc->sh->host_no,
		SCpnt->device->id, SCpnt->device->lun));
	return (*func)(SCpnt);
}

static int
mptfc_abort(struct scsi_cmnd *SCpnt)
{
	return
	    mptfc_block_error_handler(SCpnt, mptscsih_abort, __func__);
}

static int
mptfc_dev_reset(struct scsi_cmnd *SCpnt)
{
	return
	    mptfc_block_error_handler(SCpnt, mptscsih_dev_reset, __func__);
}

static int
mptfc_bus_reset(struct scsi_cmnd *SCpnt)
{
	return
	    mptfc_block_error_handler(SCpnt, mptscsih_bus_reset, __func__);
}

static int
mptfc_host_reset(struct scsi_cmnd *SCpnt)
{
	return
	    mptfc_block_error_handler(SCpnt, mptscsih_host_reset, __func__);
}

static void
mptfc_set_rport_loss_tmo(struct fc_rport *rport, uint32_t timeout)
{
	if (timeout > 0)
		rport->dev_loss_tmo = timeout;
	else
		rport->dev_loss_tmo = mptfc_dev_loss_tmo;
}

static int
mptfc_FcDevPage0_cmp_func(const void *a, const void *b)
{
	FCDevicePage0_t **aa = (FCDevicePage0_t **)a;
	FCDevicePage0_t **bb = (FCDevicePage0_t **)b;

	if ((*aa)->CurrentBus == (*bb)->CurrentBus) {
		if ((*aa)->CurrentTargetID == (*bb)->CurrentTargetID)
			return 0;
		if ((*aa)->CurrentTargetID < (*bb)->CurrentTargetID)
			return -1;
		return 1;
	}
	if ((*aa)->CurrentBus < (*bb)->CurrentBus)
		return -1;
	return 1;
}

static int
mptfc_GetFcDevPage0(MPT_ADAPTER *ioc, int ioc_port,
	void(*func)(MPT_ADAPTER *ioc,int channel, FCDevicePage0_t *arg))
{
	ConfigPageHeader_t	 hdr;
	CONFIGPARMS		 cfg;
	FCDevicePage0_t		*ppage0_alloc, *fc;
	dma_addr_t		 page0_dma;
	int			 data_sz;
	int			 ii;

	FCDevicePage0_t		*p0_array=NULL, *p_p0;
	FCDevicePage0_t		**pp0_array=NULL, **p_pp0;

	int			 rc = -ENOMEM;
	U32			 port_id = 0xffffff;
	int			 num_targ = 0;
	int			 max_bus = ioc->facts.MaxBuses;
	int			 max_targ;

	max_targ = (ioc->facts.MaxDevices == 0) ? 256 : ioc->facts.MaxDevices;

	data_sz = sizeof(FCDevicePage0_t) * max_bus * max_targ;
	p_p0 = p0_array =  kzalloc(data_sz, GFP_KERNEL);
	if (!p0_array)
		goto out;

	data_sz = sizeof(FCDevicePage0_t *) * max_bus * max_targ;
	p_pp0 = pp0_array = kzalloc(data_sz, GFP_KERNEL);
	if (!pp0_array)
		goto out;

	do {
		/* Get FC Device Page 0 header */
		hdr.PageVersion = 0;
		hdr.PageLength = 0;
		hdr.PageNumber = 0;
		hdr.PageType = MPI_CONFIG_PAGETYPE_FC_DEVICE;
		cfg.cfghdr.hdr = &hdr;
		cfg.physAddr = -1;
		cfg.action = MPI_CONFIG_ACTION_PAGE_HEADER;
		cfg.dir = 0;
		cfg.pageAddr = port_id;
		cfg.timeout = 0;

		if ((rc = mpt_config(ioc, &cfg)) != 0)
			break;

		if (hdr.PageLength <= 0)
			break;

		data_sz = hdr.PageLength * 4;
		ppage0_alloc = pci_alloc_consistent(ioc->pcidev, data_sz,
		    					&page0_dma);
		rc = -ENOMEM;
		if (!ppage0_alloc)
			break;

		cfg.physAddr = page0_dma;
		cfg.action = MPI_CONFIG_ACTION_PAGE_READ_CURRENT;

		if ((rc = mpt_config(ioc, &cfg)) == 0) {
			ppage0_alloc->PortIdentifier =
				le32_to_cpu(ppage0_alloc->PortIdentifier);

			ppage0_alloc->WWNN.Low =
				le32_to_cpu(ppage0_alloc->WWNN.Low);

			ppage0_alloc->WWNN.High =
				le32_to_cpu(ppage0_alloc->WWNN.High);

			ppage0_alloc->WWPN.Low =
				le32_to_cpu(ppage0_alloc->WWPN.Low);

			ppage0_alloc->WWPN.High =
				le32_to_cpu(ppage0_alloc->WWPN.High);

			ppage0_alloc->BBCredit =
				le16_to_cpu(ppage0_alloc->BBCredit);

			ppage0_alloc->MaxRxFrameSize =
				le16_to_cpu(ppage0_alloc->MaxRxFrameSize);

			port_id = ppage0_alloc->PortIdentifier;
			num_targ++;
			*p_p0 = *ppage0_alloc;	/* save data */
			*p_pp0++ = p_p0++;	/* save addr */
		}
		pci_free_consistent(ioc->pcidev, data_sz,
		    			(u8 *) ppage0_alloc, page0_dma);
		if (rc != 0)
			break;

	} while (port_id <= 0xff0000);

	if (num_targ) {
		/* sort array */
		if (num_targ > 1)
			sort (pp0_array, num_targ, sizeof(FCDevicePage0_t *),
				mptfc_FcDevPage0_cmp_func, NULL);
		/* call caller's func for each targ */
		for (ii = 0; ii < num_targ;  ii++) {
			fc = *(pp0_array+ii);
			func(ioc, ioc_port, fc);
		}
	}

 out:
	kfree(pp0_array);
	kfree(p0_array);
	return rc;
}

static int
mptfc_generate_rport_ids(FCDevicePage0_t *pg0, struct fc_rport_identifiers *rid)
{
	/* not currently usable */
	if (pg0->Flags & (MPI_FC_DEVICE_PAGE0_FLAGS_PLOGI_INVALID |
			  MPI_FC_DEVICE_PAGE0_FLAGS_PRLI_INVALID))
		return -1;

	if (!(pg0->Flags & MPI_FC_DEVICE_PAGE0_FLAGS_TARGETID_BUS_VALID))
		return -1;

	if (!(pg0->Protocol & MPI_FC_DEVICE_PAGE0_PROT_FCP_TARGET))
		return -1;

	/*
	 * board data structure already normalized to platform endianness
	 * shifted to avoid unaligned access on 64 bit architecture
	 */
	rid->node_name = ((u64)pg0->WWNN.High) << 32 | (u64)pg0->WWNN.Low;
	rid->port_name = ((u64)pg0->WWPN.High) << 32 | (u64)pg0->WWPN.Low;
	rid->port_id =   pg0->PortIdentifier;
	rid->roles = FC_RPORT_ROLE_UNKNOWN;

	return 0;
}

static void
mptfc_register_dev(MPT_ADAPTER *ioc, int channel, FCDevicePage0_t *pg0)
{
	struct fc_rport_identifiers rport_ids;
	struct fc_rport		*rport;
	struct mptfc_rport_info	*ri;
	int			new_ri = 1;
	u64			pn, nn;
	VirtTarget		*vtarget;
	u32			roles = FC_RPORT_ROLE_UNKNOWN;

	if (mptfc_generate_rport_ids(pg0, &rport_ids) < 0)
		return;

	roles |= FC_RPORT_ROLE_FCP_TARGET;
	if (pg0->Protocol & MPI_FC_DEVICE_PAGE0_PROT_FCP_INITIATOR)
		roles |= FC_RPORT_ROLE_FCP_INITIATOR;

	/* scan list looking for a match */
	list_for_each_entry(ri, &ioc->fc_rports, list) {
		pn = (u64)ri->pg0.WWPN.High << 32 | (u64)ri->pg0.WWPN.Low;
		if (pn == rport_ids.port_name) {	/* match */
			list_move_tail(&ri->list, &ioc->fc_rports);
			new_ri = 0;
			break;
		}
	}
	if (new_ri) {	/* allocate one */
		ri = kzalloc(sizeof(struct mptfc_rport_info), GFP_KERNEL);
		if (!ri)
			return;
		list_add_tail(&ri->list, &ioc->fc_rports);
	}

	ri->pg0 = *pg0;	/* add/update pg0 data */
	ri->flags &= ~MPT_RPORT_INFO_FLAGS_MISSING;

	/* MPT_RPORT_INFO_FLAGS_REGISTERED - rport not previously deleted */
	if (!(ri->flags & MPT_RPORT_INFO_FLAGS_REGISTERED)) {
		ri->flags |= MPT_RPORT_INFO_FLAGS_REGISTERED;
		rport = fc_remote_port_add(ioc->sh, channel, &rport_ids);
		if (rport) {
			ri->rport = rport;
			if (new_ri) /* may have been reset by user */
				rport->dev_loss_tmo = mptfc_dev_loss_tmo;
			/*
			 * if already mapped, remap here.  If not mapped,
			 * target_alloc will allocate vtarget and map,
			 * slave_alloc will fill in vdevice from vtarget.
			 */
			if (ri->starget) {
				vtarget = ri->starget->hostdata;
				if (vtarget) {
					vtarget->id = pg0->CurrentTargetID;
					vtarget->channel = pg0->CurrentBus;
					vtarget->deleted = 0;
				}
			}
			*((struct mptfc_rport_info **)rport->dd_data) = ri;
			/* scan will be scheduled once rport becomes a target */
			fc_remote_port_rolechg(rport,roles);

			pn = (u64)ri->pg0.WWPN.High << 32 | (u64)ri->pg0.WWPN.Low;
			nn = (u64)ri->pg0.WWNN.High << 32 | (u64)ri->pg0.WWNN.Low;
			dfcprintk (ioc, printk(MYIOC_s_DEBUG_FMT
				"mptfc_reg_dev.%d: %x, %llx / %llx, tid %d, "
				"rport tid %d, tmo %d\n",
					ioc->name,
					ioc->sh->host_no,
					pg0->PortIdentifier,
					(unsigned long long)nn,
					(unsigned long long)pn,
					pg0->CurrentTargetID,
					ri->rport->scsi_target_id,
					ri->rport->dev_loss_tmo));
		} else {
			list_del(&ri->list);
			kfree(ri);
			ri = NULL;
		}
	}
}

/*
 *	OS entry point to allow for host driver to free allocated memory
 *	Called if no device present or device being unloaded
 */
static void
mptfc_target_destroy(struct scsi_target *starget)
{
	struct fc_rport		*rport;
	struct mptfc_rport_info *ri;

	rport = starget_to_rport(starget);
	if (rport) {
		ri = *((struct mptfc_rport_info **)rport->dd_data);
		if (ri)	/* better be! */
			ri->starget = NULL;
	}
	if (starget->hostdata)
		kfree(starget->hostdata);
	starget->hostdata = NULL;
}

/*
 *	OS entry point to allow host driver to alloc memory
 *	for each scsi target. Called once per device the bus scan.
 *	Return non-zero if allocation fails.
 */
static int
mptfc_target_alloc(struct scsi_target *starget)
{
	VirtTarget		*vtarget;
	struct fc_rport		*rport;
	struct mptfc_rport_info *ri;
	int			rc;

	vtarget = kzalloc(sizeof(VirtTarget), GFP_KERNEL);
	if (!vtarget)
		return -ENOMEM;
	starget->hostdata = vtarget;

	rc = -ENODEV;
	rport = starget_to_rport(starget);
	if (rport) {
		ri = *((struct mptfc_rport_info **)rport->dd_data);
		if (ri) {	/* better be! */
			vtarget->id = ri->pg0.CurrentTargetID;
			vtarget->channel = ri->pg0.CurrentBus;
			ri->starget = starget;
			rc = 0;
		}
	}
	if (rc != 0) {
		kfree(vtarget);
		starget->hostdata = NULL;
	}

	return rc;
}
/*
 *	mptfc_dump_lun_info
 *	@ioc
 *	@rport
 *	@sdev
 *
 */
static void
mptfc_dump_lun_info(MPT_ADAPTER *ioc, struct fc_rport *rport, struct scsi_device *sdev,
		VirtTarget *vtarget)
{
	u64 nn, pn;
	struct mptfc_rport_info *ri;

	ri = *((struct mptfc_rport_info **)rport->dd_data);
	pn = (u64)ri->pg0.WWPN.High << 32 | (u64)ri->pg0.WWPN.Low;
	nn = (u64)ri->pg0.WWNN.High << 32 | (u64)ri->pg0.WWNN.Low;
	dfcprintk (ioc, printk(MYIOC_s_DEBUG_FMT
		"mptfc_slv_alloc.%d: num_luns %d, sdev.id %d, "
		"CurrentTargetID %d, %x %llx %llx\n",
		ioc->name,
		sdev->host->host_no,
		vtarget->num_luns,
		sdev->id, ri->pg0.CurrentTargetID,
		ri->pg0.PortIdentifier,
		(unsigned long long)pn,
		(unsigned long long)nn));
}


/*
 *	OS entry point to allow host driver to alloc memory
 *	for each scsi device. Called once per device the bus scan.
 *	Return non-zero if allocation fails.
 *	Init memory once per LUN.
 */
static int
mptfc_slave_alloc(struct scsi_device *sdev)
{
	MPT_SCSI_HOST		*hd;
	VirtTarget		*vtarget;
	VirtDevice		*vdevice;
	struct scsi_target	*starget;
	struct fc_rport		*rport;
	MPT_ADAPTER 		*ioc;

	starget = scsi_target(sdev);
	rport = starget_to_rport(starget);

	if (!rport || fc_remote_port_chkready(rport))
		return -ENXIO;

	hd = shost_priv(sdev->host);
	ioc = hd->ioc;

	vdevice = kzalloc(sizeof(VirtDevice), GFP_KERNEL);
	if (!vdevice) {
		printk(MYIOC_s_ERR_FMT "slave_alloc kmalloc(%zd) FAILED!\n",
				ioc->name, sizeof(VirtDevice));
		return -ENOMEM;
	}


	sdev->hostdata = vdevice;
	vtarget = starget->hostdata;

	if (vtarget->num_luns == 0) {
		vtarget->ioc_id = ioc->id;
		vtarget->tflags = MPT_TARGET_FLAGS_Q_YES;
	}

	vdevice->vtarget = vtarget;
	vdevice->lun = sdev->lun;

	vtarget->num_luns++;


	mptfc_dump_lun_info(ioc, rport, sdev, vtarget);

	return 0;
}

static int
mptfc_qcmd(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *))
{
	struct mptfc_rport_info	*ri;
	struct fc_rport	*rport = starget_to_rport(scsi_target(SCpnt->device));
	int		err;
	VirtDevice	*vdevice = SCpnt->device->hostdata;

	if (!vdevice || !vdevice->vtarget) {
		SCpnt->result = DID_NO_CONNECT << 16;
		done(SCpnt);
		return 0;
	}

	err = fc_remote_port_chkready(rport);
	if (unlikely(err)) {
		SCpnt->result = err;
		done(SCpnt);
		return 0;
	}

	/* dd_data is null until finished adding target */
	ri = *((struct mptfc_rport_info **)rport->dd_data);
	if (unlikely(!ri)) {
		SCpnt->result = DID_IMM_RETRY << 16;
		done(SCpnt);
		return 0;
	}

	return mptscsih_qcmd(SCpnt,done);
}

/*
 *	mptfc_display_port_link_speed - displaying link speed
 *	@ioc: Pointer to MPT_ADAPTER structure
 *	@portnum: IOC Port number
 *	@pp0dest: port page0 data payload
 *
 */
static void
mptfc_display_port_link_speed(MPT_ADAPTER *ioc, int portnum, FCPortPage0_t *pp0dest)
{
	u8	old_speed, new_speed, state;
	char	*old, *new;

	if (portnum >= 2)
		return;

	old_speed = ioc->fc_link_speed[portnum];
	new_speed = pp0dest->CurrentSpeed;
	state = pp0dest->PortState;

	if (state != MPI_FCPORTPAGE0_PORTSTATE_OFFLINE &&
	    new_speed != MPI_FCPORTPAGE0_CURRENT_SPEED_UKNOWN) {

		old = old_speed == MPI_FCPORTPAGE0_CURRENT_SPEED_1GBIT ? "1 Gbps" :
		       old_speed == MPI_FCPORTPAGE0_CURRENT_SPEED_2GBIT ? "2 Gbps" :
			old_speed == MPI_FCPORTPAGE0_CURRENT_SPEED_4GBIT ? "4 Gbps" :
			 "Unknown";
		new = new_speed == MPI_FCPORTPAGE0_CURRENT_SPEED_1GBIT ? "1 Gbps" :
		       new_speed == MPI_FCPORTPAGE0_CURRENT_SPEED_2GBIT ? "2 Gbps" :
			new_speed == MPI_FCPORTPAGE0_CURRENT_SPEED_4GBIT ? "4 Gbps" :
			 "Unknown";
		if (old_speed == 0)
			printk(MYIOC_s_NOTE_FMT
				"FC Link Established, Speed = %s\n",
				ioc->name, new);
		else if (old_speed != new_speed)
			printk(MYIOC_s_WARN_FMT
				"FC Link Speed Change, Old Speed = %s, New Speed = %s\n",
				ioc->name, old, new);

		ioc->fc_link_speed[portnum] = new_speed;
	}
}

/*
 *	mptfc_GetFcPortPage0 - Fetch FCPort config Page0.
 *	@ioc: Pointer to MPT_ADAPTER structure
 *	@portnum: IOC Port number
 *
 *	Return: 0 for success
 *	-ENOMEM if no memory available
 *		-EPERM if not allowed due to ISR context
 *		-EAGAIN if no msg frames currently available
 *		-EFAULT for non-successful reply or no reply (timeout)
 *		-EINVAL portnum arg out of range (hardwired to two elements)
 */
static int
mptfc_GetFcPortPage0(MPT_ADAPTER *ioc, int portnum)
{
	ConfigPageHeader_t	 hdr;
	CONFIGPARMS		 cfg;
	FCPortPage0_t		*ppage0_alloc;
	FCPortPage0_t		*pp0dest;
	dma_addr_t		 page0_dma;
	int			 data_sz;
	int			 copy_sz;
	int			 rc;
	int			 count = 400;

	if (portnum > 1)
		return -EINVAL;

	/* Get FCPort Page 0 header */
	hdr.PageVersion = 0;
	hdr.PageLength = 0;
	hdr.PageNumber = 0;
	hdr.PageType = MPI_CONFIG_PAGETYPE_FC_PORT;
	cfg.cfghdr.hdr = &hdr;
	cfg.physAddr = -1;
	cfg.action = MPI_CONFIG_ACTION_PAGE_HEADER;
	cfg.dir = 0;
	cfg.pageAddr = portnum;
	cfg.timeout = 0;

	if ((rc = mpt_config(ioc, &cfg)) != 0)
		return rc;

	if (hdr.PageLength == 0)
		return 0;

	data_sz = hdr.PageLength * 4;
	rc = -ENOMEM;
	ppage0_alloc = (FCPortPage0_t *) pci_alloc_consistent(ioc->pcidev, data_sz, &page0_dma);
	if (ppage0_alloc) {

 try_again:
		memset((u8 *)ppage0_alloc, 0, data_sz);
		cfg.physAddr = page0_dma;
		cfg.action = MPI_CONFIG_ACTION_PAGE_READ_CURRENT;

		if ((rc = mpt_config(ioc, &cfg)) == 0) {
			/* save the data */
			pp0dest = &ioc->fc_port_page0[portnum];
			copy_sz = min_t(int, sizeof(FCPortPage0_t), data_sz);
			memcpy(pp0dest, ppage0_alloc, copy_sz);

			/*
			 *	Normalize endianness of structure data,
			 *	by byte-swapping all > 1 byte fields!
			 */
			pp0dest->Flags = le32_to_cpu(pp0dest->Flags);
			pp0dest->PortIdentifier = le32_to_cpu(pp0dest->PortIdentifier);
			pp0dest->WWNN.Low = le32_to_cpu(pp0dest->WWNN.Low);
			pp0dest->WWNN.High = le32_to_cpu(pp0dest->WWNN.High);
			pp0dest->WWPN.Low = le32_to_cpu(pp0dest->WWPN.Low);
			pp0dest->WWPN.High = le32_to_cpu(pp0dest->WWPN.High);
			pp0dest->SupportedServiceClass = le32_to_cpu(pp0dest->SupportedServiceClass);
			pp0dest->SupportedSpeeds = le32_to_cpu(pp0dest->SupportedSpeeds);
			pp0dest->CurrentSpeed = le32_to_cpu(pp0dest->CurrentSpeed);
			pp0dest->MaxFrameSize = le32_to_cpu(pp0dest->MaxFrameSize);
			pp0dest->FabricWWNN.Low = le32_to_cpu(pp0dest->FabricWWNN.Low);
			pp0dest->FabricWWNN.High = le32_to_cpu(pp0dest->FabricWWNN.High);
			pp0dest->FabricWWPN.Low = le32_to_cpu(pp0dest->FabricWWPN.Low);
			pp0dest->FabricWWPN.High = le32_to_cpu(pp0dest->FabricWWPN.High);
			pp0dest->DiscoveredPortsCount = le32_to_cpu(pp0dest->DiscoveredPortsCount);
			pp0dest->MaxInitiators = le32_to_cpu(pp0dest->MaxInitiators);

			/*
			 * if still doing discovery,
			 * hang loose a while until finished
			 */
			if ((pp0dest->PortState == MPI_FCPORTPAGE0_PORTSTATE_UNKNOWN) ||
			    (pp0dest->PortState == MPI_FCPORTPAGE0_PORTSTATE_ONLINE &&
			     (pp0dest->Flags & MPI_FCPORTPAGE0_FLAGS_ATTACH_TYPE_MASK)
			      == MPI_FCPORTPAGE0_FLAGS_ATTACH_NO_INIT)) {
				if (count-- > 0) {
					msleep(100);
					goto try_again;
				}
				printk(MYIOC_s_INFO_FMT "Firmware discovery not"
							" complete.\n",
						ioc->name);
			}
			mptfc_display_port_link_speed(ioc, portnum, pp0dest);
		}

		pci_free_consistent(ioc->pcidev, data_sz, (u8 *) ppage0_alloc, page0_dma);
	}

	return rc;
}

static int
mptfc_WriteFcPortPage1(MPT_ADAPTER *ioc, int portnum)
{
	ConfigPageHeader_t	 hdr;
	CONFIGPARMS		 cfg;
	int			 rc;

	if (portnum > 1)
		return -EINVAL;

	if (!(ioc->fc_data.fc_port_page1[portnum].data))
		return -EINVAL;

	/* get fcport page 1 header */
	hdr.PageVersion = 0;
	hdr.PageLength = 0;
	hdr.PageNumber = 1;
	hdr.PageType = MPI_CONFIG_PAGETYPE_FC_PORT;
	cfg.cfghdr.hdr = &hdr;
	cfg.physAddr = -1;
	cfg.action = MPI_CONFIG_ACTION_PAGE_HEADER;
	cfg.dir = 0;
	cfg.pageAddr = portnum;
	cfg.timeout = 0;

	if ((rc = mpt_config(ioc, &cfg)) != 0)
		return rc;

	if (hdr.PageLength == 0)
		return -ENODEV;

	if (hdr.PageLength*4 != ioc->fc_data.fc_port_page1[portnum].pg_sz)
		return -EINVAL;

	cfg.physAddr = ioc->fc_data.fc_port_page1[portnum].dma;
	cfg.action = MPI_CONFIG_ACTION_PAGE_WRITE_CURRENT;
	cfg.dir = 1;

	rc = mpt_config(ioc, &cfg);

	return rc;
}

static int
mptfc_GetFcPortPage1(MPT_ADAPTER *ioc, int portnum)
{
	ConfigPageHeader_t	 hdr;
	CONFIGPARMS		 cfg;
	FCPortPage1_t		*page1_alloc;
	dma_addr_t		 page1_dma;
	int			 data_sz;
	int			 rc;

	if (portnum > 1)
		return -EINVAL;

	/* get fcport page 1 header */
	hdr.PageVersion = 0;
	hdr.PageLength = 0;
	hdr.PageNumber = 1;
	hdr.PageType = MPI_CONFIG_PAGETYPE_FC_PORT;
	cfg.cfghdr.hdr = &hdr;
	cfg.physAddr = -1;
	cfg.action = MPI_CONFIG_ACTION_PAGE_HEADER;
	cfg.dir = 0;
	cfg.pageAddr = portnum;
	cfg.timeout = 0;

	if ((rc = mpt_config(ioc, &cfg)) != 0)
		return rc;

	if (hdr.PageLength == 0)
		return -ENODEV;

start_over:

	if (ioc->fc_data.fc_port_page1[portnum].data == NULL) {
		data_sz = hdr.PageLength * 4;
		if (data_sz < sizeof(FCPortPage1_t))
			data_sz = sizeof(FCPortPage1_t);

		page1_alloc = (FCPortPage1_t *) pci_alloc_consistent(ioc->pcidev,
						data_sz,
						&page1_dma);
		if (!page1_alloc)
			return -ENOMEM;
	}
	else {
		page1_alloc = ioc->fc_data.fc_port_page1[portnum].data;
		page1_dma = ioc->fc_data.fc_port_page1[portnum].dma;
		data_sz = ioc->fc_data.fc_port_page1[portnum].pg_sz;
		if (hdr.PageLength * 4 > data_sz) {
			ioc->fc_data.fc_port_page1[portnum].data = NULL;
			pci_free_consistent(ioc->pcidev, data_sz, (u8 *)
				page1_alloc, page1_dma);
			goto start_over;
		}
	}

	memset(page1_alloc,0,data_sz);

	cfg.physAddr = page1_dma;
	cfg.action = MPI_CONFIG_ACTION_PAGE_READ_CURRENT;

	if ((rc = mpt_config(ioc, &cfg)) == 0) {
		ioc->fc_data.fc_port_page1[portnum].data = page1_alloc;
		ioc->fc_data.fc_port_page1[portnum].pg_sz = data_sz;
		ioc->fc_data.fc_port_page1[portnum].dma = page1_dma;
	}
	else {
		ioc->fc_data.fc_port_page1[portnum].data = NULL;
		pci_free_consistent(ioc->pcidev, data_sz, (u8 *)
			page1_alloc, page1_dma);
	}

	return rc;
}

static void
mptfc_SetFcPortPage1_defaults(MPT_ADAPTER *ioc)
{
	int		ii;
	FCPortPage1_t	*pp1;

	#define MPTFC_FW_DEVICE_TIMEOUT	(1)
	#define MPTFC_FW_IO_PEND_TIMEOUT (1)
	#define ON_FLAGS  (MPI_FCPORTPAGE1_FLAGS_IMMEDIATE_ERROR_REPLY)
	#define OFF_FLAGS (MPI_FCPORTPAGE1_FLAGS_VERBOSE_RESCAN_EVENTS)

	for (ii=0; ii<ioc->facts.NumberOfPorts; ii++) {
		if (mptfc_GetFcPortPage1(ioc, ii) != 0)
			continue;
		pp1 = ioc->fc_data.fc_port_page1[ii].data;
		if ((pp1->InitiatorDeviceTimeout == MPTFC_FW_DEVICE_TIMEOUT)
		 && (pp1->InitiatorIoPendTimeout == MPTFC_FW_IO_PEND_TIMEOUT)
		 && ((pp1->Flags & ON_FLAGS) == ON_FLAGS)
		 && ((pp1->Flags & OFF_FLAGS) == 0))
			continue;
		pp1->InitiatorDeviceTimeout = MPTFC_FW_DEVICE_TIMEOUT;
		pp1->InitiatorIoPendTimeout = MPTFC_FW_IO_PEND_TIMEOUT;
		pp1->Flags &= ~OFF_FLAGS;
		pp1->Flags |= ON_FLAGS;
		mptfc_WriteFcPortPage1(ioc, ii);
	}
}


static void
mptfc_init_host_attr(MPT_ADAPTER *ioc,int portnum)
{
	unsigned	class = 0;
	unsigned	cos = 0;
	unsigned	speed;
	unsigned	port_type;
	unsigned	port_state;
	FCPortPage0_t	*pp0;
	struct Scsi_Host *sh;
	char		*sn;

	/* don't know what to do as only one scsi (fc) host was allocated */
	if (portnum != 0)
		return;

	pp0 = &ioc->fc_port_page0[portnum];
	sh = ioc->sh;

	sn = fc_host_symbolic_name(sh);
	snprintf(sn, FC_SYMBOLIC_NAME_SIZE, "%s %s%08xh",
	    ioc->prod_name,
	    MPT_FW_REV_MAGIC_ID_STRING,
	    ioc->facts.FWVersion.Word);

	fc_host_tgtid_bind_type(sh) = FC_TGTID_BIND_BY_WWPN;

	fc_host_maxframe_size(sh) = pp0->MaxFrameSize;

	fc_host_node_name(sh) =
	    	(u64)pp0->WWNN.High << 32 | (u64)pp0->WWNN.Low;

	fc_host_port_name(sh) =
	    	(u64)pp0->WWPN.High << 32 | (u64)pp0->WWPN.Low;

	fc_host_port_id(sh) = pp0->PortIdentifier;

	class = pp0->SupportedServiceClass;
	if (class & MPI_FCPORTPAGE0_SUPPORT_CLASS_1)
		cos |= FC_COS_CLASS1;
	if (class & MPI_FCPORTPAGE0_SUPPORT_CLASS_2)
		cos |= FC_COS_CLASS2;
	if (class & MPI_FCPORTPAGE0_SUPPORT_CLASS_3)
		cos |= FC_COS_CLASS3;
	fc_host_supported_classes(sh) = cos;

	if (pp0->CurrentSpeed == MPI_FCPORTPAGE0_CURRENT_SPEED_1GBIT)
		speed = FC_PORTSPEED_1GBIT;
	else if (pp0->CurrentSpeed == MPI_FCPORTPAGE0_CURRENT_SPEED_2GBIT)
		speed = FC_PORTSPEED_2GBIT;
	else if (pp0->CurrentSpeed == MPI_FCPORTPAGE0_CURRENT_SPEED_4GBIT)
		speed = FC_PORTSPEED_4GBIT;
	else if (pp0->CurrentSpeed == MPI_FCPORTPAGE0_CURRENT_SPEED_10GBIT)
		speed = FC_PORTSPEED_10GBIT;
	else
		speed = FC_PORTSPEED_UNKNOWN;
	fc_host_speed(sh) = speed;

	speed = 0;
	if (pp0->SupportedSpeeds & MPI_FCPORTPAGE0_SUPPORT_1GBIT_SPEED)
		speed |= FC_PORTSPEED_1GBIT;
	if (pp0->SupportedSpeeds & MPI_FCPORTPAGE0_SUPPORT_2GBIT_SPEED)
		speed |= FC_PORTSPEED_2GBIT;
	if (pp0->SupportedSpeeds & MPI_FCPORTPAGE0_SUPPORT_4GBIT_SPEED)
		speed |= FC_PORTSPEED_4GBIT;
	if (pp0->SupportedSpeeds & MPI_FCPORTPAGE0_SUPPORT_10GBIT_SPEED)
		speed |= FC_PORTSPEED_10GBIT;
	fc_host_supported_speeds(sh) = speed;

	port_state = FC_PORTSTATE_UNKNOWN;
	if (pp0->PortState == MPI_FCPORTPAGE0_PORTSTATE_ONLINE)
		port_state = FC_PORTSTATE_ONLINE;
	else if (pp0->PortState == MPI_FCPORTPAGE0_PORTSTATE_OFFLINE)
		port_state = FC_PORTSTATE_LINKDOWN;
	fc_host_port_state(sh) = port_state;

	port_type = FC_PORTTYPE_UNKNOWN;
	if (pp0->Flags & MPI_FCPORTPAGE0_FLAGS_ATTACH_POINT_TO_POINT)
		port_type = FC_PORTTYPE_PTP;
	else if (pp0->Flags & MPI_FCPORTPAGE0_FLAGS_ATTACH_PRIVATE_LOOP)
		port_type = FC_PORTTYPE_LPORT;
	else if (pp0->Flags & MPI_FCPORTPAGE0_FLAGS_ATTACH_PUBLIC_LOOP)
		port_type = FC_PORTTYPE_NLPORT;
	else if (pp0->Flags & MPI_FCPORTPAGE0_FLAGS_ATTACH_FABRIC_DIRECT)
		port_type = FC_PORTTYPE_NPORT;
	fc_host_port_type(sh) = port_type;

	fc_host_fabric_name(sh) =
	    (pp0->Flags & MPI_FCPORTPAGE0_FLAGS_FABRIC_WWN_VALID) ?
		(u64) pp0->FabricWWNN.High << 32 | (u64) pp0->FabricWWPN.Low :
		(u64)pp0->WWNN.High << 32 | (u64)pp0->WWNN.Low;

}

static void
mptfc_link_status_change(struct work_struct *work)
{
	MPT_ADAPTER             *ioc =
		container_of(work, MPT_ADAPTER, fc_rescan_work);
	int ii;

	for (ii=0; ii < ioc->facts.NumberOfPorts; ii++)
		(void) mptfc_GetFcPortPage0(ioc, ii);

}

static void
mptfc_setup_reset(struct work_struct *work)
{
	MPT_ADAPTER		*ioc =
		container_of(work, MPT_ADAPTER, fc_setup_reset_work);
	u64			pn;
	struct mptfc_rport_info *ri;
	struct scsi_target      *starget;
	VirtTarget              *vtarget;

	/* reset about to happen, delete (block) all rports */
	list_for_each_entry(ri, &ioc->fc_rports, list) {
		if (ri->flags & MPT_RPORT_INFO_FLAGS_REGISTERED) {
			ri->flags &= ~MPT_RPORT_INFO_FLAGS_REGISTERED;
			fc_remote_port_delete(ri->rport);	/* won't sleep */
			ri->rport = NULL;
			starget = ri->starget;
			if (starget) {
				vtarget = starget->hostdata;
				if (vtarget)
					vtarget->deleted = 1;
			}

			pn = (u64)ri->pg0.WWPN.High << 32 |
			     (u64)ri->pg0.WWPN.Low;
			dfcprintk (ioc, printk(MYIOC_s_DEBUG_FMT
				"mptfc_setup_reset.%d: %llx deleted\n",
				ioc->name,
				ioc->sh->host_no,
				(unsigned long long)pn));
		}
	}
}

static void
mptfc_rescan_devices(struct work_struct *work)
{
	MPT_ADAPTER		*ioc =
		container_of(work, MPT_ADAPTER, fc_rescan_work);
	int			ii;
	u64			pn;
	struct mptfc_rport_info *ri;
	struct scsi_target      *starget;
	VirtTarget              *vtarget;

	/* start by tagging all ports as missing */
	list_for_each_entry(ri, &ioc->fc_rports, list) {
		if (ri->flags & MPT_RPORT_INFO_FLAGS_REGISTERED) {
			ri->flags |= MPT_RPORT_INFO_FLAGS_MISSING;
		}
	}

	/*
	 * now rescan devices known to adapter,
	 * will reregister existing rports
	 */
	for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) {
		(void) mptfc_GetFcPortPage0(ioc, ii);
		mptfc_init_host_attr(ioc, ii);	/* refresh */
		mptfc_GetFcDevPage0(ioc, ii, mptfc_register_dev);
	}

	/* delete devices still missing */
	list_for_each_entry(ri, &ioc->fc_rports, list) {
		/* if newly missing, delete it */
		if (ri->flags & MPT_RPORT_INFO_FLAGS_MISSING) {

			ri->flags &= ~(MPT_RPORT_INFO_FLAGS_REGISTERED|
				       MPT_RPORT_INFO_FLAGS_MISSING);
			fc_remote_port_delete(ri->rport);	/* won't sleep */
			ri->rport = NULL;
			starget = ri->starget;
			if (starget) {
				vtarget = starget->hostdata;
				if (vtarget)
					vtarget->deleted = 1;
			}

			pn = (u64)ri->pg0.WWPN.High << 32 |
			     (u64)ri->pg0.WWPN.Low;
			dfcprintk (ioc, printk(MYIOC_s_DEBUG_FMT
				"mptfc_rescan.%d: %llx deleted\n",
				ioc->name,
				ioc->sh->host_no,
				(unsigned long long)pn));
		}
	}
}

static int
mptfc_probe(struct pci_dev *pdev, const struct pci_device_id *id)
{
	struct Scsi_Host	*sh;
	MPT_SCSI_HOST		*hd;
	MPT_ADAPTER 		*ioc;
	unsigned long		 flags;
	int			 ii;
	int			 numSGE = 0;
	int			 scale;
	int			 ioc_cap;
	int			error=0;
	int			r;

	if ((r = mpt_attach(pdev,id)) != 0)
		return r;

	ioc = pci_get_drvdata(pdev);
	ioc->DoneCtx = mptfcDoneCtx;
	ioc->TaskCtx = mptfcTaskCtx;
	ioc->InternalCtx = mptfcInternalCtx;

	/*  Added sanity check on readiness of the MPT adapter.
	 */
	if (ioc->last_state != MPI_IOC_STATE_OPERATIONAL) {
		printk(MYIOC_s_WARN_FMT
		  "Skipping because it's not operational!\n",
		  ioc->name);
		error = -ENODEV;
		goto out_mptfc_probe;
	}

	if (!ioc->active) {
		printk(MYIOC_s_WARN_FMT "Skipping because it's disabled!\n",
		  ioc->name);
		error = -ENODEV;
		goto out_mptfc_probe;
	}

	/*  Sanity check - ensure at least 1 port is INITIATOR capable
	 */
	ioc_cap = 0;
	for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) {
		if (ioc->pfacts[ii].ProtocolFlags &
		    MPI_PORTFACTS_PROTOCOL_INITIATOR)
			ioc_cap ++;
	}

	if (!ioc_cap) {
		printk(MYIOC_s_WARN_FMT
			"Skipping ioc=%p because SCSI Initiator mode is NOT enabled!\n",
			ioc->name, ioc);
		return 0;
	}

	sh = scsi_host_alloc(&mptfc_driver_template, sizeof(MPT_SCSI_HOST));

	if (!sh) {
		printk(MYIOC_s_WARN_FMT
			"Unable to register controller with SCSI subsystem\n",
			ioc->name);
		error = -1;
		goto out_mptfc_probe;
        }

	spin_lock_init(&ioc->fc_rescan_work_lock);
	INIT_WORK(&ioc->fc_rescan_work, mptfc_rescan_devices);
	INIT_WORK(&ioc->fc_setup_reset_work, mptfc_setup_reset);
	INIT_WORK(&ioc->fc_lsc_work, mptfc_link_status_change);

	spin_lock_irqsave(&ioc->FreeQlock, flags);

	/* Attach the SCSI Host to the IOC structure
	 */
	ioc->sh = sh;

	sh->io_port = 0;
	sh->n_io_port = 0;
	sh->irq = 0;

	/* set 16 byte cdb's */
	sh->max_cmd_len = 16;

	sh->max_id = ioc->pfacts->MaxDevices;
	sh->max_lun = max_lun;

	/* Required entry.
	 */
	sh->unique_id = ioc->id;

	/* Verify that we won't exceed the maximum
	 * number of chain buffers
	 * We can optimize:  ZZ = req_sz/sizeof(SGE)
	 * For 32bit SGE's:
	 *  numSGE = 1 + (ZZ-1)*(maxChain -1) + ZZ
	 *               + (req_sz - 64)/sizeof(SGE)
	 * A slightly different algorithm is required for
	 * 64bit SGEs.
	 */
	scale = ioc->req_sz/ioc->SGE_size;
	if (ioc->sg_addr_size == sizeof(u64)) {
		numSGE = (scale - 1) *
		  (ioc->facts.MaxChainDepth-1) + scale +
		  (ioc->req_sz - 60) / ioc->SGE_size;
	} else {
		numSGE = 1 + (scale - 1) *
		  (ioc->facts.MaxChainDepth-1) + scale +
		  (ioc->req_sz - 64) / ioc->SGE_size;
	}

	if (numSGE < sh->sg_tablesize) {
		/* Reset this value */
		dprintk(ioc, printk(MYIOC_s_DEBUG_FMT
		  "Resetting sg_tablesize to %d from %d\n",
		  ioc->name, numSGE, sh->sg_tablesize));
		sh->sg_tablesize = numSGE;
	}

	spin_unlock_irqrestore(&ioc->FreeQlock, flags);

	hd = shost_priv(sh);
	hd->ioc = ioc;

	/* SCSI needs scsi_cmnd lookup table!
	 * (with size equal to req_depth*PtrSz!)
	 */
	ioc->ScsiLookup = kcalloc(ioc->req_depth, sizeof(void *), GFP_ATOMIC);
	if (!ioc->ScsiLookup) {
		error = -ENOMEM;
		goto out_mptfc_probe;
	}
	spin_lock_init(&ioc->scsi_lookup_lock);

	dprintk(ioc, printk(MYIOC_s_DEBUG_FMT "ScsiLookup @ %p\n",
		 ioc->name, ioc->ScsiLookup));

	hd->last_queue_full = 0;

	sh->transportt = mptfc_transport_template;
	error = scsi_add_host (sh, &ioc->pcidev->dev);
	if(error) {
		dprintk(ioc, printk(MYIOC_s_ERR_FMT
		  "scsi_add_host failed\n", ioc->name));
		goto out_mptfc_probe;
	}

	/* initialize workqueue */

	snprintf(ioc->fc_rescan_work_q_name, sizeof(ioc->fc_rescan_work_q_name),
		 "mptfc_wq_%d", sh->host_no);
	ioc->fc_rescan_work_q =
		create_singlethread_workqueue(ioc->fc_rescan_work_q_name);
	if (!ioc->fc_rescan_work_q)
		goto out_mptfc_probe;

	/*
	 *  Pre-fetch FC port WWN and stuff...
	 *  (FCPortPage0_t stuff)
	 */
	for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) {
		(void) mptfc_GetFcPortPage0(ioc, ii);
	}
	mptfc_SetFcPortPage1_defaults(ioc);

	/*
	 * scan for rports -
	 *	by doing it via the workqueue, some locking is eliminated
	 */

	queue_work(ioc->fc_rescan_work_q, &ioc->fc_rescan_work);
	flush_workqueue(ioc->fc_rescan_work_q);

	return 0;

out_mptfc_probe:

	mptscsih_remove(pdev);
	return error;
}

static struct pci_driver mptfc_driver = {
	.name		= "mptfc",
	.id_table	= mptfc_pci_table,
	.probe		= mptfc_probe,
	.remove		= __devexit_p(mptfc_remove),
	.shutdown	= mptscsih_shutdown,
#ifdef CONFIG_PM
	.suspend	= mptscsih_suspend,
	.resume		= mptscsih_resume,
#endif
};

static int
mptfc_event_process(MPT_ADAPTER *ioc, EventNotificationReply_t *pEvReply)
{
	MPT_SCSI_HOST *hd;
	u8 event = le32_to_cpu(pEvReply->Event) & 0xFF;
	unsigned long flags;
	int rc=1;

	if (ioc->bus_type != FC)
		return 0;

	devtverboseprintk(ioc, printk(MYIOC_s_DEBUG_FMT "MPT event (=%02Xh) routed to SCSI host driver!\n",
			ioc->name, event));

	if (ioc->sh == NULL ||
		((hd = shost_priv(ioc->sh)) == NULL))
		return 1;

	switch (event) {
	case MPI_EVENT_RESCAN:
		spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
		if (ioc->fc_rescan_work_q) {
			queue_work(ioc->fc_rescan_work_q,
				   &ioc->fc_rescan_work);
		}
		spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
		break;
	case MPI_EVENT_LINK_STATUS_CHANGE:
		spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
		if (ioc->fc_rescan_work_q) {
			queue_work(ioc->fc_rescan_work_q,
				   &ioc->fc_lsc_work);
		}
		spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
		break;
	default:
		rc = mptscsih_event_process(ioc,pEvReply);
		break;
	}
	return rc;
}

static int
mptfc_ioc_reset(MPT_ADAPTER *ioc, int reset_phase)
{
	int		rc;
	unsigned long	flags;

	rc = mptscsih_ioc_reset(ioc,reset_phase);
	if ((ioc->bus_type != FC) || (!rc))
		return rc;


	dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT
		": IOC %s_reset routed to FC host driver!\n",ioc->name,
		reset_phase==MPT_IOC_SETUP_RESET ? "setup" : (
		reset_phase==MPT_IOC_PRE_RESET ? "pre" : "post")));

	if (reset_phase == MPT_IOC_SETUP_RESET) {
		spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
		if (ioc->fc_rescan_work_q) {
			queue_work(ioc->fc_rescan_work_q,
				   &ioc->fc_setup_reset_work);
		}
		spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
	}

	else if (reset_phase == MPT_IOC_PRE_RESET) {
	}

	else {	/* MPT_IOC_POST_RESET */
		mptfc_SetFcPortPage1_defaults(ioc);
		spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
		if (ioc->fc_rescan_work_q) {
			queue_work(ioc->fc_rescan_work_q,
				   &ioc->fc_rescan_work);
		}
		spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
	}
	return 1;
}

/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
/**
 *	mptfc_init - Register MPT adapter(s) as SCSI host(s) with SCSI mid-layer.
 *
 *	Returns 0 for success, non-zero for failure.
 */
static int __init
mptfc_init(void)
{
	int error;

	show_mptmod_ver(my_NAME, my_VERSION);

	/* sanity check module parameters */
	if (mptfc_dev_loss_tmo <= 0)
		mptfc_dev_loss_tmo = MPTFC_DEV_LOSS_TMO;

	mptfc_transport_template =
		fc_attach_transport(&mptfc_transport_functions);

	if (!mptfc_transport_template)
		return -ENODEV;

	mptfcDoneCtx = mpt_register(mptscsih_io_done, MPTFC_DRIVER);
	mptfcTaskCtx = mpt_register(mptscsih_taskmgmt_complete, MPTFC_DRIVER);
	mptfcInternalCtx = mpt_register(mptscsih_scandv_complete, MPTFC_DRIVER);

	mpt_event_register(mptfcDoneCtx, mptfc_event_process);
	mpt_reset_register(mptfcDoneCtx, mptfc_ioc_reset);

	error = pci_register_driver(&mptfc_driver);
	if (error)
		fc_release_transport(mptfc_transport_template);

	return error;
}

/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
/**
 *	mptfc_remove - Remove fc infrastructure for devices
 *	@pdev: Pointer to pci_dev structure
 *
 */
static void __devexit
mptfc_remove(struct pci_dev *pdev)
{
	MPT_ADAPTER		*ioc = pci_get_drvdata(pdev);
	struct mptfc_rport_info	*p, *n;
	struct workqueue_struct *work_q;
	unsigned long		flags;
	int			ii;

	/* destroy workqueue */
	if ((work_q=ioc->fc_rescan_work_q)) {
		spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
		ioc->fc_rescan_work_q = NULL;
		spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
		destroy_workqueue(work_q);
	}

	fc_remove_host(ioc->sh);

	list_for_each_entry_safe(p, n, &ioc->fc_rports, list) {
		list_del(&p->list);
		kfree(p);
	}

	for (ii=0; ii<ioc->facts.NumberOfPorts; ii++) {
		if (ioc->fc_data.fc_port_page1[ii].data) {
			pci_free_consistent(ioc->pcidev,
				ioc->fc_data.fc_port_page1[ii].pg_sz,
				(u8 *) ioc->fc_data.fc_port_page1[ii].data,
				ioc->fc_data.fc_port_page1[ii].dma);
			ioc->fc_data.fc_port_page1[ii].data = NULL;
		}
	}

	mptscsih_remove(pdev);
}

/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
/**
 *	mptfc_exit - Unregisters MPT adapter(s)
 *
 */
static void __exit
mptfc_exit(void)
{
	pci_unregister_driver(&mptfc_driver);
	fc_release_transport(mptfc_transport_template);

	mpt_reset_deregister(mptfcDoneCtx);
	mpt_event_deregister(mptfcDoneCtx);

	mpt_deregister(mptfcInternalCtx);
	mpt_deregister(mptfcTaskCtx);
	mpt_deregister(mptfcDoneCtx);
}

module_init(mptfc_init);
module_exit(mptfc_exit);
OpenPOWER on IntegriCloud