aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/scsi/lpfc/lpfc_debugfs.c
blob: a753581509d6d22ddba46d76b669fcc5603fa6f9 (plain) (blame)
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
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
/*******************************************************************
 * This file is part of the Emulex Linux Device Driver for         *
 * Fibre Channel Host Bus Adapters.                                *
 * Copyright (C) 2007-2011 Emulex.  All rights reserved.           *
 * EMULEX and SLI are trademarks of Emulex.                        *
 * www.emulex.com                                                  *
 *                                                                 *
 * This program is free software; you can redistribute it and/or   *
 * modify it under the terms of version 2 of the GNU General       *
 * Public License as published by the Free Software Foundation.    *
 * This program is distributed in the hope that it will be useful. *
 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
 * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
 * more details, a copy of which can be found in the file COPYING  *
 * included with this package.                                     *
 *******************************************************************/

#include <linux/blkdev.h>
#include <linux/delay.h>
#include <linux/dma-mapping.h>
#include <linux/idr.h>
#include <linux/interrupt.h>
#include <linux/kthread.h>
#include <linux/slab.h>
#include <linux/pci.h>
#include <linux/spinlock.h>
#include <linux/ctype.h>

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

#include "lpfc_hw4.h"
#include "lpfc_hw.h"
#include "lpfc_sli.h"
#include "lpfc_sli4.h"
#include "lpfc_nl.h"
#include "lpfc_disc.h"
#include "lpfc_scsi.h"
#include "lpfc.h"
#include "lpfc_logmsg.h"
#include "lpfc_crtn.h"
#include "lpfc_vport.h"
#include "lpfc_version.h"
#include "lpfc_compat.h"
#include "lpfc_debugfs.h"

#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
/*
 * debugfs interface
 *
 * To access this interface the user should:
 * # mount -t debugfs none /sys/kernel/debug
 *
 * The lpfc debugfs directory hierarchy is:
 * /sys/kernel/debug/lpfc/fnX/vportY
 * where X is the lpfc hba function unique_id
 * where Y is the vport VPI on that hba
 *
 * Debugging services available per vport:
 * discovery_trace
 * This is an ACSII readable file that contains a trace of the last
 * lpfc_debugfs_max_disc_trc events that happened on a specific vport.
 * See lpfc_debugfs.h for different categories of  discovery events.
 * To enable the discovery trace, the following module parameters must be set:
 * lpfc_debugfs_enable=1         Turns on lpfc debugfs filesystem support
 * lpfc_debugfs_max_disc_trc=X   Where X is the event trace depth for
 *                               EACH vport. X MUST also be a power of 2.
 * lpfc_debugfs_mask_disc_trc=Y  Where Y is an event mask as defined in
 *                               lpfc_debugfs.h .
 *
 * slow_ring_trace
 * This is an ACSII readable file that contains a trace of the last
 * lpfc_debugfs_max_slow_ring_trc events that happened on a specific HBA.
 * To enable the slow ring trace, the following module parameters must be set:
 * lpfc_debugfs_enable=1         Turns on lpfc debugfs filesystem support
 * lpfc_debugfs_max_slow_ring_trc=X   Where X is the event trace depth for
 *                               the HBA. X MUST also be a power of 2.
 */
static int lpfc_debugfs_enable = 1;
module_param(lpfc_debugfs_enable, int, S_IRUGO);
MODULE_PARM_DESC(lpfc_debugfs_enable, "Enable debugfs services");

/* This MUST be a power of 2 */
static int lpfc_debugfs_max_disc_trc;
module_param(lpfc_debugfs_max_disc_trc, int, S_IRUGO);
MODULE_PARM_DESC(lpfc_debugfs_max_disc_trc,
	"Set debugfs discovery trace depth");

/* This MUST be a power of 2 */
static int lpfc_debugfs_max_slow_ring_trc;
module_param(lpfc_debugfs_max_slow_ring_trc, int, S_IRUGO);
MODULE_PARM_DESC(lpfc_debugfs_max_slow_ring_trc,
	"Set debugfs slow ring trace depth");

static int lpfc_debugfs_mask_disc_trc;
module_param(lpfc_debugfs_mask_disc_trc, int, S_IRUGO);
MODULE_PARM_DESC(lpfc_debugfs_mask_disc_trc,
	"Set debugfs discovery trace mask");

#include <linux/debugfs.h>

static atomic_t lpfc_debugfs_seq_trc_cnt = ATOMIC_INIT(0);
static unsigned long lpfc_debugfs_start_time = 0L;

/* iDiag */
static struct lpfc_idiag idiag;

/**
 * lpfc_debugfs_disc_trc_data - Dump discovery logging to a buffer
 * @vport: The vport to gather the log info from.
 * @buf: The buffer to dump log into.
 * @size: The maximum amount of data to process.
 *
 * Description:
 * This routine gathers the lpfc discovery debugfs data from the @vport and
 * dumps it to @buf up to @size number of bytes. It will start at the next entry
 * in the log and process the log until the end of the buffer. Then it will
 * gather from the beginning of the log and process until the current entry.
 *
 * Notes:
 * Discovery logging will be disabled while while this routine dumps the log.
 *
 * Return Value:
 * This routine returns the amount of bytes that were dumped into @buf and will
 * not exceed @size.
 **/
static int
lpfc_debugfs_disc_trc_data(struct lpfc_vport *vport, char *buf, int size)
{
	int i, index, len, enable;
	uint32_t ms;
	struct lpfc_debugfs_trc *dtp;
	char buffer[LPFC_DEBUG_TRC_ENTRY_SIZE];

	enable = lpfc_debugfs_enable;
	lpfc_debugfs_enable = 0;

	len = 0;
	index = (atomic_read(&vport->disc_trc_cnt) + 1) &
		(lpfc_debugfs_max_disc_trc - 1);
	for (i = index; i < lpfc_debugfs_max_disc_trc; i++) {
		dtp = vport->disc_trc + i;
		if (!dtp->fmt)
			continue;
		ms = jiffies_to_msecs(dtp->jif - lpfc_debugfs_start_time);
		snprintf(buffer,
			LPFC_DEBUG_TRC_ENTRY_SIZE, "%010d:%010d ms:%s\n",
			dtp->seq_cnt, ms, dtp->fmt);
		len +=  snprintf(buf+len, size-len, buffer,
			dtp->data1, dtp->data2, dtp->data3);
	}
	for (i = 0; i < index; i++) {
		dtp = vport->disc_trc + i;
		if (!dtp->fmt)
			continue;
		ms = jiffies_to_msecs(dtp->jif - lpfc_debugfs_start_time);
		snprintf(buffer,
			LPFC_DEBUG_TRC_ENTRY_SIZE, "%010d:%010d ms:%s\n",
			dtp->seq_cnt, ms, dtp->fmt);
		len +=  snprintf(buf+len, size-len, buffer,
			dtp->data1, dtp->data2, dtp->data3);
	}

	lpfc_debugfs_enable = enable;
	return len;
}

/**
 * lpfc_debugfs_slow_ring_trc_data - Dump slow ring logging to a buffer
 * @phba: The HBA to gather the log info from.
 * @buf: The buffer to dump log into.
 * @size: The maximum amount of data to process.
 *
 * Description:
 * This routine gathers the lpfc slow ring debugfs data from the @phba and
 * dumps it to @buf up to @size number of bytes. It will start at the next entry
 * in the log and process the log until the end of the buffer. Then it will
 * gather from the beginning of the log and process until the current entry.
 *
 * Notes:
 * Slow ring logging will be disabled while while this routine dumps the log.
 *
 * Return Value:
 * This routine returns the amount of bytes that were dumped into @buf and will
 * not exceed @size.
 **/
static int
lpfc_debugfs_slow_ring_trc_data(struct lpfc_hba *phba, char *buf, int size)
{
	int i, index, len, enable;
	uint32_t ms;
	struct lpfc_debugfs_trc *dtp;
	char buffer[LPFC_DEBUG_TRC_ENTRY_SIZE];


	enable = lpfc_debugfs_enable;
	lpfc_debugfs_enable = 0;

	len = 0;
	index = (atomic_read(&phba->slow_ring_trc_cnt) + 1) &
		(lpfc_debugfs_max_slow_ring_trc - 1);
	for (i = index; i < lpfc_debugfs_max_slow_ring_trc; i++) {
		dtp = phba->slow_ring_trc + i;
		if (!dtp->fmt)
			continue;
		ms = jiffies_to_msecs(dtp->jif - lpfc_debugfs_start_time);
		snprintf(buffer,
			LPFC_DEBUG_TRC_ENTRY_SIZE, "%010d:%010d ms:%s\n",
			dtp->seq_cnt, ms, dtp->fmt);
		len +=  snprintf(buf+len, size-len, buffer,
			dtp->data1, dtp->data2, dtp->data3);
	}
	for (i = 0; i < index; i++) {
		dtp = phba->slow_ring_trc + i;
		if (!dtp->fmt)
			continue;
		ms = jiffies_to_msecs(dtp->jif - lpfc_debugfs_start_time);
		snprintf(buffer,
			LPFC_DEBUG_TRC_ENTRY_SIZE, "%010d:%010d ms:%s\n",
			dtp->seq_cnt, ms, dtp->fmt);
		len +=  snprintf(buf+len, size-len, buffer,
			dtp->data1, dtp->data2, dtp->data3);
	}

	lpfc_debugfs_enable = enable;
	return len;
}

static int lpfc_debugfs_last_hbq = -1;

/**
 * lpfc_debugfs_hbqinfo_data - Dump host buffer queue info to a buffer
 * @phba: The HBA to gather host buffer info from.
 * @buf: The buffer to dump log into.
 * @size: The maximum amount of data to process.
 *
 * Description:
 * This routine dumps the host buffer queue info from the @phba to @buf up to
 * @size number of bytes. A header that describes the current hbq state will be
 * dumped to @buf first and then info on each hbq entry will be dumped to @buf
 * until @size bytes have been dumped or all the hbq info has been dumped.
 *
 * Notes:
 * This routine will rotate through each configured HBQ each time called.
 *
 * Return Value:
 * This routine returns the amount of bytes that were dumped into @buf and will
 * not exceed @size.
 **/
static int
lpfc_debugfs_hbqinfo_data(struct lpfc_hba *phba, char *buf, int size)
{
	int len = 0;
	int cnt, i, j, found, posted, low;
	uint32_t phys, raw_index, getidx;
	struct lpfc_hbq_init *hip;
	struct hbq_s *hbqs;
	struct lpfc_hbq_entry *hbqe;
	struct lpfc_dmabuf *d_buf;
	struct hbq_dmabuf *hbq_buf;

	if (phba->sli_rev != 3)
		return 0;
	cnt = LPFC_HBQINFO_SIZE;
	spin_lock_irq(&phba->hbalock);

	/* toggle between multiple hbqs, if any */
	i = lpfc_sli_hbq_count();
	if (i > 1) {
		 lpfc_debugfs_last_hbq++;
		 if (lpfc_debugfs_last_hbq >= i)
			lpfc_debugfs_last_hbq = 0;
	}
	else
		lpfc_debugfs_last_hbq = 0;

	i = lpfc_debugfs_last_hbq;

	len +=  snprintf(buf+len, size-len, "HBQ %d Info\n", i);

	hbqs =  &phba->hbqs[i];
	posted = 0;
	list_for_each_entry(d_buf, &hbqs->hbq_buffer_list, list)
		posted++;

	hip =  lpfc_hbq_defs[i];
	len +=  snprintf(buf+len, size-len,
		"idx:%d prof:%d rn:%d bufcnt:%d icnt:%d acnt:%d posted %d\n",
		hip->hbq_index, hip->profile, hip->rn,
		hip->buffer_count, hip->init_count, hip->add_count, posted);

	raw_index = phba->hbq_get[i];
	getidx = le32_to_cpu(raw_index);
	len +=  snprintf(buf+len, size-len,
		"entrys:%d bufcnt:%d Put:%d nPut:%d localGet:%d hbaGet:%d\n",
		hbqs->entry_count, hbqs->buffer_count, hbqs->hbqPutIdx,
		hbqs->next_hbqPutIdx, hbqs->local_hbqGetIdx, getidx);

	hbqe = (struct lpfc_hbq_entry *) phba->hbqs[i].hbq_virt;
	for (j=0; j<hbqs->entry_count; j++) {
		len +=  snprintf(buf+len, size-len,
			"%03d: %08x %04x %05x ", j,
			le32_to_cpu(hbqe->bde.addrLow),
			le32_to_cpu(hbqe->bde.tus.w),
			le32_to_cpu(hbqe->buffer_tag));
		i = 0;
		found = 0;

		/* First calculate if slot has an associated posted buffer */
		low = hbqs->hbqPutIdx - posted;
		if (low >= 0) {
			if ((j >= hbqs->hbqPutIdx) || (j < low)) {
				len +=  snprintf(buf+len, size-len, "Unused\n");
				goto skipit;
			}
		}
		else {
			if ((j >= hbqs->hbqPutIdx) &&
				(j < (hbqs->entry_count+low))) {
				len +=  snprintf(buf+len, size-len, "Unused\n");
				goto skipit;
			}
		}

		/* Get the Buffer info for the posted buffer */
		list_for_each_entry(d_buf, &hbqs->hbq_buffer_list, list) {
			hbq_buf = container_of(d_buf, struct hbq_dmabuf, dbuf);
			phys = ((uint64_t)hbq_buf->dbuf.phys & 0xffffffff);
			if (phys == le32_to_cpu(hbqe->bde.addrLow)) {
				len +=  snprintf(buf+len, size-len,
					"Buf%d: %p %06x\n", i,
					hbq_buf->dbuf.virt, hbq_buf->tag);
				found = 1;
				break;
			}
			i++;
		}
		if (!found) {
			len +=  snprintf(buf+len, size-len, "No DMAinfo?\n");
		}
skipit:
		hbqe++;
		if (len > LPFC_HBQINFO_SIZE - 54)
			break;
	}
	spin_unlock_irq(&phba->hbalock);
	return len;
}

static int lpfc_debugfs_last_hba_slim_off;

/**
 * lpfc_debugfs_dumpHBASlim_data - Dump HBA SLIM info to a buffer
 * @phba: The HBA to gather SLIM info from.
 * @buf: The buffer to dump log into.
 * @size: The maximum amount of data to process.
 *
 * Description:
 * This routine dumps the current contents of HBA SLIM for the HBA associated
 * with @phba to @buf up to @size bytes of data. This is the raw HBA SLIM data.
 *
 * Notes:
 * This routine will only dump up to 1024 bytes of data each time called and
 * should be called multiple times to dump the entire HBA SLIM.
 *
 * Return Value:
 * This routine returns the amount of bytes that were dumped into @buf and will
 * not exceed @size.
 **/
static int
lpfc_debugfs_dumpHBASlim_data(struct lpfc_hba *phba, char *buf, int size)
{
	int len = 0;
	int i, off;
	uint32_t *ptr;
	char buffer[1024];

	off = 0;
	spin_lock_irq(&phba->hbalock);

	len +=  snprintf(buf+len, size-len, "HBA SLIM\n");
	lpfc_memcpy_from_slim(buffer,
		phba->MBslimaddr + lpfc_debugfs_last_hba_slim_off, 1024);

	ptr = (uint32_t *)&buffer[0];
	off = lpfc_debugfs_last_hba_slim_off;

	/* Set it up for the next time */
	lpfc_debugfs_last_hba_slim_off += 1024;
	if (lpfc_debugfs_last_hba_slim_off >= 4096)
		lpfc_debugfs_last_hba_slim_off = 0;

	i = 1024;
	while (i > 0) {
		len +=  snprintf(buf+len, size-len,
		"%08x: %08x %08x %08x %08x %08x %08x %08x %08x\n",
		off, *ptr, *(ptr+1), *(ptr+2), *(ptr+3), *(ptr+4),
		*(ptr+5), *(ptr+6), *(ptr+7));
		ptr += 8;
		i -= (8 * sizeof(uint32_t));
		off += (8 * sizeof(uint32_t));
	}

	spin_unlock_irq(&phba->hbalock);
	return len;
}

/**
 * lpfc_debugfs_dumpHostSlim_data - Dump host SLIM info to a buffer
 * @phba: The HBA to gather Host SLIM info from.
 * @buf: The buffer to dump log into.
 * @size: The maximum amount of data to process.
 *
 * Description:
 * This routine dumps the current contents of host SLIM for the host associated
 * with @phba to @buf up to @size bytes of data. The dump will contain the
 * Mailbox, PCB, Rings, and Registers that are located in host memory.
 *
 * Return Value:
 * This routine returns the amount of bytes that were dumped into @buf and will
 * not exceed @size.
 **/
static int
lpfc_debugfs_dumpHostSlim_data(struct lpfc_hba *phba, char *buf, int size)
{
	int len = 0;
	int i, off;
	uint32_t word0, word1, word2, word3;
	uint32_t *ptr;
	struct lpfc_pgp *pgpp;
	struct lpfc_sli *psli = &phba->sli;
	struct lpfc_sli_ring *pring;

	off = 0;
	spin_lock_irq(&phba->hbalock);

	len +=  snprintf(buf+len, size-len, "SLIM Mailbox\n");
	ptr = (uint32_t *)phba->slim2p.virt;
	i = sizeof(MAILBOX_t);
	while (i > 0) {
		len +=  snprintf(buf+len, size-len,
		"%08x: %08x %08x %08x %08x %08x %08x %08x %08x\n",
		off, *ptr, *(ptr+1), *(ptr+2), *(ptr+3), *(ptr+4),
		*(ptr+5), *(ptr+6), *(ptr+7));
		ptr += 8;
		i -= (8 * sizeof(uint32_t));
		off += (8 * sizeof(uint32_t));
	}

	len +=  snprintf(buf+len, size-len, "SLIM PCB\n");
	ptr = (uint32_t *)phba->pcb;
	i = sizeof(PCB_t);
	while (i > 0) {
		len +=  snprintf(buf+len, size-len,
		"%08x: %08x %08x %08x %08x %08x %08x %08x %08x\n",
		off, *ptr, *(ptr+1), *(ptr+2), *(ptr+3), *(ptr+4),
		*(ptr+5), *(ptr+6), *(ptr+7));
		ptr += 8;
		i -= (8 * sizeof(uint32_t));
		off += (8 * sizeof(uint32_t));
	}

	for (i = 0; i < 4; i++) {
		pgpp = &phba->port_gp[i];
		pring = &psli->ring[i];
		len +=  snprintf(buf+len, size-len,
				 "Ring %d: CMD GetInx:%d (Max:%d Next:%d "
				 "Local:%d flg:x%x)  RSP PutInx:%d Max:%d\n",
				 i, pgpp->cmdGetInx, pring->numCiocb,
				 pring->next_cmdidx, pring->local_getidx,
				 pring->flag, pgpp->rspPutInx, pring->numRiocb);
	}

	if (phba->sli_rev <= LPFC_SLI_REV3) {
		word0 = readl(phba->HAregaddr);
		word1 = readl(phba->CAregaddr);
		word2 = readl(phba->HSregaddr);
		word3 = readl(phba->HCregaddr);
		len +=  snprintf(buf+len, size-len, "HA:%08x CA:%08x HS:%08x "
				 "HC:%08x\n", word0, word1, word2, word3);
	}
	spin_unlock_irq(&phba->hbalock);
	return len;
}

/**
 * lpfc_debugfs_nodelist_data - Dump target node list to a buffer
 * @vport: The vport to gather target node info from.
 * @buf: The buffer to dump log into.
 * @size: The maximum amount of data to process.
 *
 * Description:
 * This routine dumps the current target node list associated with @vport to
 * @buf up to @size bytes of data. Each node entry in the dump will contain a
 * node state, DID, WWPN, WWNN, RPI, flags, type, and other useful fields.
 *
 * Return Value:
 * This routine returns the amount of bytes that were dumped into @buf and will
 * not exceed @size.
 **/
static int
lpfc_debugfs_nodelist_data(struct lpfc_vport *vport, char *buf, int size)
{
	int len = 0;
	int cnt;
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
	struct lpfc_nodelist *ndlp;
	unsigned char *statep, *name;

	cnt = (LPFC_NODELIST_SIZE / LPFC_NODELIST_ENTRY_SIZE);

	spin_lock_irq(shost->host_lock);
	list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
		if (!cnt) {
			len +=  snprintf(buf+len, size-len,
				"Missing Nodelist Entries\n");
			break;
		}
		cnt--;
		switch (ndlp->nlp_state) {
		case NLP_STE_UNUSED_NODE:
			statep = "UNUSED";
			break;
		case NLP_STE_PLOGI_ISSUE:
			statep = "PLOGI ";
			break;
		case NLP_STE_ADISC_ISSUE:
			statep = "ADISC ";
			break;
		case NLP_STE_REG_LOGIN_ISSUE:
			statep = "REGLOG";
			break;
		case NLP_STE_PRLI_ISSUE:
			statep = "PRLI  ";
			break;
		case NLP_STE_UNMAPPED_NODE:
			statep = "UNMAP ";
			break;
		case NLP_STE_MAPPED_NODE:
			statep = "MAPPED";
			break;
		case NLP_STE_NPR_NODE:
			statep = "NPR   ";
			break;
		default:
			statep = "UNKNOWN";
		}
		len +=  snprintf(buf+len, size-len, "%s DID:x%06x ",
			statep, ndlp->nlp_DID);
		name = (unsigned char *)&ndlp->nlp_portname;
		len +=  snprintf(buf+len, size-len,
			"WWPN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x ",
			*name, *(name+1), *(name+2), *(name+3),
			*(name+4), *(name+5), *(name+6), *(name+7));
		name = (unsigned char *)&ndlp->nlp_nodename;
		len +=  snprintf(buf+len, size-len,
			"WWNN %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x ",
			*name, *(name+1), *(name+2), *(name+3),
			*(name+4), *(name+5), *(name+6), *(name+7));
		len +=  snprintf(buf+len, size-len, "RPI:%03d flag:x%08x ",
			ndlp->nlp_rpi, ndlp->nlp_flag);
		if (!ndlp->nlp_type)
			len +=  snprintf(buf+len, size-len, "UNKNOWN_TYPE ");
		if (ndlp->nlp_type & NLP_FC_NODE)
			len +=  snprintf(buf+len, size-len, "FC_NODE ");
		if (ndlp->nlp_type & NLP_FABRIC)
			len +=  snprintf(buf+len, size-len, "FABRIC ");
		if (ndlp->nlp_type & NLP_FCP_TARGET)
			len +=  snprintf(buf+len, size-len, "FCP_TGT sid:%d ",
				ndlp->nlp_sid);
		if (ndlp->nlp_type & NLP_FCP_INITIATOR)
			len +=  snprintf(buf+len, size-len, "FCP_INITIATOR ");
		len += snprintf(buf+len, size-len, "usgmap:%x ",
			ndlp->nlp_usg_map);
		len += snprintf(buf+len, size-len, "refcnt:%x",
			atomic_read(&ndlp->kref.refcount));
		len +=  snprintf(buf+len, size-len, "\n");
	}
	spin_unlock_irq(shost->host_lock);
	return len;
}
#endif

/**
 * lpfc_debugfs_disc_trc - Store discovery trace log
 * @vport: The vport to associate this trace string with for retrieval.
 * @mask: Log entry classification.
 * @fmt: Format string to be displayed when dumping the log.
 * @data1: 1st data parameter to be applied to @fmt.
 * @data2: 2nd data parameter to be applied to @fmt.
 * @data3: 3rd data parameter to be applied to @fmt.
 *
 * Description:
 * This routine is used by the driver code to add a debugfs log entry to the
 * discovery trace buffer associated with @vport. Only entries with a @mask that
 * match the current debugfs discovery mask will be saved. Entries that do not
 * match will be thrown away. @fmt, @data1, @data2, and @data3 are used like
 * printf when displaying the log.
 **/
inline void
lpfc_debugfs_disc_trc(struct lpfc_vport *vport, int mask, char *fmt,
	uint32_t data1, uint32_t data2, uint32_t data3)
{
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
	struct lpfc_debugfs_trc *dtp;
	int index;

	if (!(lpfc_debugfs_mask_disc_trc & mask))
		return;

	if (!lpfc_debugfs_enable || !lpfc_debugfs_max_disc_trc ||
		!vport || !vport->disc_trc)
		return;

	index = atomic_inc_return(&vport->disc_trc_cnt) &
		(lpfc_debugfs_max_disc_trc - 1);
	dtp = vport->disc_trc + index;
	dtp->fmt = fmt;
	dtp->data1 = data1;
	dtp->data2 = data2;
	dtp->data3 = data3;
	dtp->seq_cnt = atomic_inc_return(&lpfc_debugfs_seq_trc_cnt);
	dtp->jif = jiffies;
#endif
	return;
}

/**
 * lpfc_debugfs_slow_ring_trc - Store slow ring trace log
 * @phba: The phba to associate this trace string with for retrieval.
 * @fmt: Format string to be displayed when dumping the log.
 * @data1: 1st data parameter to be applied to @fmt.
 * @data2: 2nd data parameter to be applied to @fmt.
 * @data3: 3rd data parameter to be applied to @fmt.
 *
 * Description:
 * This routine is used by the driver code to add a debugfs log entry to the
 * discovery trace buffer associated with @vport. @fmt, @data1, @data2, and
 * @data3 are used like printf when displaying the log.
 **/
inline void
lpfc_debugfs_slow_ring_trc(struct lpfc_hba *phba, char *fmt,
	uint32_t data1, uint32_t data2, uint32_t data3)
{
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
	struct lpfc_debugfs_trc *dtp;
	int index;

	if (!lpfc_debugfs_enable || !lpfc_debugfs_max_slow_ring_trc ||
		!phba || !phba->slow_ring_trc)
		return;

	index = atomic_inc_return(&phba->slow_ring_trc_cnt) &
		(lpfc_debugfs_max_slow_ring_trc - 1);
	dtp = phba->slow_ring_trc + index;
	dtp->fmt = fmt;
	dtp->data1 = data1;
	dtp->data2 = data2;
	dtp->data3 = data3;
	dtp->seq_cnt = atomic_inc_return(&lpfc_debugfs_seq_trc_cnt);
	dtp->jif = jiffies;
#endif
	return;
}

#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
/**
 * lpfc_debugfs_disc_trc_open - Open the discovery trace log
 * @inode: The inode pointer that contains a vport pointer.
 * @file: The file pointer to attach the log output.
 *
 * Description:
 * This routine is the entry point for the debugfs open file operation. It gets
 * the vport from the i_private field in @inode, allocates the necessary buffer
 * for the log, fills the buffer from the in-memory log for this vport, and then
 * returns a pointer to that log in the private_data field in @file.
 *
 * Returns:
 * This function returns zero if successful. On error it will return an negative
 * error value.
 **/
static int
lpfc_debugfs_disc_trc_open(struct inode *inode, struct file *file)
{
	struct lpfc_vport *vport = inode->i_private;
	struct lpfc_debug *debug;
	int size;
	int rc = -ENOMEM;

	if (!lpfc_debugfs_max_disc_trc) {
		 rc = -ENOSPC;
		goto out;
	}

	debug = kmalloc(sizeof(*debug), GFP_KERNEL);
	if (!debug)
		goto out;

	/* Round to page boundary */
	size =  (lpfc_debugfs_max_disc_trc * LPFC_DEBUG_TRC_ENTRY_SIZE);
	size = PAGE_ALIGN(size);

	debug->buffer = kmalloc(size, GFP_KERNEL);
	if (!debug->buffer) {
		kfree(debug);
		goto out;
	}

	debug->len = lpfc_debugfs_disc_trc_data(vport, debug->buffer, size);
	file->private_data = debug;

	rc = 0;
out:
	return rc;
}

/**
 * lpfc_debugfs_slow_ring_trc_open - Open the Slow Ring trace log
 * @inode: The inode pointer that contains a vport pointer.
 * @file: The file pointer to attach the log output.
 *
 * Description:
 * This routine is the entry point for the debugfs open file operation. It gets
 * the vport from the i_private field in @inode, allocates the necessary buffer
 * for the log, fills the buffer from the in-memory log for this vport, and then
 * returns a pointer to that log in the private_data field in @file.
 *
 * Returns:
 * This function returns zero if successful. On error it will return an negative
 * error value.
 **/
static int
lpfc_debugfs_slow_ring_trc_open(struct inode *inode, struct file *file)
{
	struct lpfc_hba *phba = inode->i_private;
	struct lpfc_debug *debug;
	int size;
	int rc = -ENOMEM;

	if (!lpfc_debugfs_max_slow_ring_trc) {
		 rc = -ENOSPC;
		goto out;
	}

	debug = kmalloc(sizeof(*debug), GFP_KERNEL);
	if (!debug)
		goto out;

	/* Round to page boundary */
	size =  (lpfc_debugfs_max_slow_ring_trc * LPFC_DEBUG_TRC_ENTRY_SIZE);
	size = PAGE_ALIGN(size);

	debug->buffer = kmalloc(size, GFP_KERNEL);
	if (!debug->buffer) {
		kfree(debug);
		goto out;
	}

	debug->len = lpfc_debugfs_slow_ring_trc_data(phba, debug->buffer, size);
	file->private_data = debug;

	rc = 0;
out:
	return rc;
}

/**
 * lpfc_debugfs_hbqinfo_open - Open the hbqinfo debugfs buffer
 * @inode: The inode pointer that contains a vport pointer.
 * @file: The file pointer to attach the log output.
 *
 * Description:
 * This routine is the entry point for the debugfs open file operation. It gets
 * the vport from the i_private field in @inode, allocates the necessary buffer
 * for the log, fills the buffer from the in-memory log for this vport, and then
 * returns a pointer to that log in the private_data field in @file.
 *
 * Returns:
 * This function returns zero if successful. On error it will return an negative
 * error value.
 **/
static int
lpfc_debugfs_hbqinfo_open(struct inode *inode, struct file *file)
{
	struct lpfc_hba *phba = inode->i_private;
	struct lpfc_debug *debug;
	int rc = -ENOMEM;

	debug = kmalloc(sizeof(*debug), GFP_KERNEL);
	if (!debug)
		goto out;

	/* Round to page boundary */
	debug->buffer = kmalloc(LPFC_HBQINFO_SIZE, GFP_KERNEL);
	if (!debug->buffer) {
		kfree(debug);
		goto out;
	}

	debug->len = lpfc_debugfs_hbqinfo_data(phba, debug->buffer,
		LPFC_HBQINFO_SIZE);
	file->private_data = debug;

	rc = 0;
out:
	return rc;
}

/**
 * lpfc_debugfs_dumpHBASlim_open - Open the Dump HBA SLIM debugfs buffer
 * @inode: The inode pointer that contains a vport pointer.
 * @file: The file pointer to attach the log output.
 *
 * Description:
 * This routine is the entry point for the debugfs open file operation. It gets
 * the vport from the i_private field in @inode, allocates the necessary buffer
 * for the log, fills the buffer from the in-memory log for this vport, and then
 * returns a pointer to that log in the private_data field in @file.
 *
 * Returns:
 * This function returns zero if successful. On error it will return an negative
 * error value.
 **/
static int
lpfc_debugfs_dumpHBASlim_open(struct inode *inode, struct file *file)
{
	struct lpfc_hba *phba = inode->i_private;
	struct lpfc_debug *debug;
	int rc = -ENOMEM;

	debug = kmalloc(sizeof(*debug), GFP_KERNEL);
	if (!debug)
		goto out;

	/* Round to page boundary */
	debug->buffer = kmalloc(LPFC_DUMPHBASLIM_SIZE, GFP_KERNEL);
	if (!debug->buffer) {
		kfree(debug);
		goto out;
	}

	debug->len = lpfc_debugfs_dumpHBASlim_data(phba, debug->buffer,
		LPFC_DUMPHBASLIM_SIZE);
	file->private_data = debug;

	rc = 0;
out:
	return rc;
}

/**
 * lpfc_debugfs_dumpHostSlim_open - Open the Dump Host SLIM debugfs buffer
 * @inode: The inode pointer that contains a vport pointer.
 * @file: The file pointer to attach the log output.
 *
 * Description:
 * This routine is the entry point for the debugfs open file operation. It gets
 * the vport from the i_private field in @inode, allocates the necessary buffer
 * for the log, fills the buffer from the in-memory log for this vport, and then
 * returns a pointer to that log in the private_data field in @file.
 *
 * Returns:
 * This function returns zero if successful. On error it will return an negative
 * error value.
 **/
static int
lpfc_debugfs_dumpHostSlim_open(struct inode *inode, struct file *file)
{
	struct lpfc_hba *phba = inode->i_private;
	struct lpfc_debug *debug;
	int rc = -ENOMEM;

	debug = kmalloc(sizeof(*debug), GFP_KERNEL);
	if (!debug)
		goto out;

	/* Round to page boundary */
	debug->buffer = kmalloc(LPFC_DUMPHOSTSLIM_SIZE, GFP_KERNEL);
	if (!debug->buffer) {
		kfree(debug);
		goto out;
	}

	debug->len = lpfc_debugfs_dumpHostSlim_data(phba, debug->buffer,
		LPFC_DUMPHOSTSLIM_SIZE);
	file->private_data = debug;

	rc = 0;
out:
	return rc;
}

static int
lpfc_debugfs_dumpData_open(struct inode *inode, struct file *file)
{
	struct lpfc_debug *debug;
	int rc = -ENOMEM;

	if (!_dump_buf_data)
		return -EBUSY;

	debug = kmalloc(sizeof(*debug), GFP_KERNEL);
	if (!debug)
		goto out;

	/* Round to page boundry */
	printk(KERN_ERR "9059 BLKGRD:  %s: _dump_buf_data=0x%p\n",
			__func__, _dump_buf_data);
	debug->buffer = _dump_buf_data;
	if (!debug->buffer) {
		kfree(debug);
		goto out;
	}

	debug->len = (1 << _dump_buf_data_order) << PAGE_SHIFT;
	file->private_data = debug;

	rc = 0;
out:
	return rc;
}

static int
lpfc_debugfs_dumpDif_open(struct inode *inode, struct file *file)
{
	struct lpfc_debug *debug;
	int rc = -ENOMEM;

	if (!_dump_buf_dif)
		return -EBUSY;

	debug = kmalloc(sizeof(*debug), GFP_KERNEL);
	if (!debug)
		goto out;

	/* Round to page boundry */
	printk(KERN_ERR	"9060 BLKGRD: %s: _dump_buf_dif=0x%p file=%s\n",
		__func__, _dump_buf_dif, file->f_dentry->d_name.name);
	debug->buffer = _dump_buf_dif;
	if (!debug->buffer) {
		kfree(debug);
		goto out;
	}

	debug->len = (1 << _dump_buf_dif_order) << PAGE_SHIFT;
	file->private_data = debug;

	rc = 0;
out:
	return rc;
}

static ssize_t
lpfc_debugfs_dumpDataDif_write(struct file *file, const char __user *buf,
		  size_t nbytes, loff_t *ppos)
{
	/*
	 * The Data/DIF buffers only save one failing IO
	 * The write op is used as a reset mechanism after an IO has
	 * already been saved to the next one can be saved
	 */
	spin_lock(&_dump_buf_lock);

	memset((void *)_dump_buf_data, 0,
			((1 << PAGE_SHIFT) << _dump_buf_data_order));
	memset((void *)_dump_buf_dif, 0,
			((1 << PAGE_SHIFT) << _dump_buf_dif_order));

	_dump_buf_done = 0;

	spin_unlock(&_dump_buf_lock);

	return nbytes;
}

/**
 * lpfc_debugfs_nodelist_open - Open the nodelist debugfs file
 * @inode: The inode pointer that contains a vport pointer.
 * @file: The file pointer to attach the log output.
 *
 * Description:
 * This routine is the entry point for the debugfs open file operation. It gets
 * the vport from the i_private field in @inode, allocates the necessary buffer
 * for the log, fills the buffer from the in-memory log for this vport, and then
 * returns a pointer to that log in the private_data field in @file.
 *
 * Returns:
 * This function returns zero if successful. On error it will return an negative
 * error value.
 **/
static int
lpfc_debugfs_nodelist_open(struct inode *inode, struct file *file)
{
	struct lpfc_vport *vport = inode->i_private;
	struct lpfc_debug *debug;
	int rc = -ENOMEM;

	debug = kmalloc(sizeof(*debug), GFP_KERNEL);
	if (!debug)
		goto out;

	/* Round to page boundary */
	debug->buffer = kmalloc(LPFC_NODELIST_SIZE, GFP_KERNEL);
	if (!debug->buffer) {
		kfree(debug);
		goto out;
	}

	debug->len = lpfc_debugfs_nodelist_data(vport, debug->buffer,
		LPFC_NODELIST_SIZE);
	file->private_data = debug;

	rc = 0;
out:
	return rc;
}

/**
 * lpfc_debugfs_lseek - Seek through a debugfs file
 * @file: The file pointer to seek through.
 * @off: The offset to seek to or the amount to seek by.
 * @whence: Indicates how to seek.
 *
 * Description:
 * This routine is the entry point for the debugfs lseek file operation. The
 * @whence parameter indicates whether @off is the offset to directly seek to,
 * or if it is a value to seek forward or reverse by. This function figures out
 * what the new offset of the debugfs file will be and assigns that value to the
 * f_pos field of @file.
 *
 * Returns:
 * This function returns the new offset if successful and returns a negative
 * error if unable to process the seek.
 **/
static loff_t
lpfc_debugfs_lseek(struct file *file, loff_t off, int whence)
{
	struct lpfc_debug *debug;
	loff_t pos = -1;

	debug = file->private_data;

	switch (whence) {
	case 0:
		pos = off;
		break;
	case 1:
		pos = file->f_pos + off;
		break;
	case 2:
		pos = debug->len - off;
	}
	return (pos < 0 || pos > debug->len) ? -EINVAL : (file->f_pos = pos);
}

/**
 * lpfc_debugfs_read - Read a debugfs file
 * @file: The file pointer to read from.
 * @buf: The buffer to copy the data to.
 * @nbytes: The number of bytes to read.
 * @ppos: The position in the file to start reading from.
 *
 * Description:
 * This routine reads data from from the buffer indicated in the private_data
 * field of @file. It will start reading at @ppos and copy up to @nbytes of
 * data to @buf.
 *
 * Returns:
 * This function returns the amount of data that was read (this could be less
 * than @nbytes if the end of the file was reached) or a negative error value.
 **/
static ssize_t
lpfc_debugfs_read(struct file *file, char __user *buf,
		  size_t nbytes, loff_t *ppos)
{
	struct lpfc_debug *debug = file->private_data;

	return simple_read_from_buffer(buf, nbytes, ppos, debug->buffer,
				       debug->len);
}

/**
 * lpfc_debugfs_release - Release the buffer used to store debugfs file data
 * @inode: The inode pointer that contains a vport pointer. (unused)
 * @file: The file pointer that contains the buffer to release.
 *
 * Description:
 * This routine frees the buffer that was allocated when the debugfs file was
 * opened.
 *
 * Returns:
 * This function returns zero.
 **/
static int
lpfc_debugfs_release(struct inode *inode, struct file *file)
{
	struct lpfc_debug *debug = file->private_data;

	kfree(debug->buffer);
	kfree(debug);

	return 0;
}

static int
lpfc_debugfs_dumpDataDif_release(struct inode *inode, struct file *file)
{
	struct lpfc_debug *debug = file->private_data;

	debug->buffer = NULL;
	kfree(debug);

	return 0;
}

/*
 * iDiag debugfs file access methods
 */

/*
 * iDiag PCI config space register access methods:
 *
 * The PCI config space register accessees of read, write, read-modify-write
 * for set bits, and read-modify-write for clear bits to SLI4 PCI functions
 * are provided. In the proper SLI4 PCI function's debugfs iDiag directory,
 *
 *      /sys/kernel/debug/lpfc/fn<#>/iDiag
 *
 * the access is through the debugfs entry pciCfg:
 *
 * 1. For PCI config space register read access, there are two read methods:
 *    A) read a single PCI config space register in the size of a byte
 *    (8 bits), a word (16 bits), or a dword (32 bits); or B) browse through
 *    the 4K extended PCI config space.
 *
 *    A) Read a single PCI config space register consists of two steps:
 *
 *    Step-1: Set up PCI config space register read command, the command
 *    syntax is,
 *
 *        echo 1 <where> <count> > pciCfg
 *
 *    where, 1 is the iDiag command for PCI config space read, <where> is the
 *    offset from the beginning of the device's PCI config space to read from,
 *    and <count> is the size of PCI config space register data to read back,
 *    it will be 1 for reading a byte (8 bits), 2 for reading a word (16 bits
 *    or 2 bytes), or 4 for reading a dword (32 bits or 4 bytes).
 *
 *    Setp-2: Perform the debugfs read operation to execute the idiag command
 *    set up in Step-1,
 *
 *        cat pciCfg
 *
 *    Examples:
 *    To read PCI device's vendor-id and device-id from PCI config space,
 *
 *        echo 1 0 4 > pciCfg
 *        cat pciCfg
 *
 *    To read PCI device's currnt command from config space,
 *
 *        echo 1 4 2 > pciCfg
 *        cat pciCfg
 *
 *    B) Browse through the entire 4K extended PCI config space also consists
 *    of two steps:
 *
 *    Step-1: Set up PCI config space register browsing command, the command
 *    syntax is,
 *
 *        echo 1 0 4096 > pciCfg
 *
 *    where, 1 is the iDiag command for PCI config space read, 0 must be used
 *    as the offset for PCI config space register browse, and 4096 must be
 *    used as the count for PCI config space register browse.
 *
 *    Step-2: Repeately issue the debugfs read operation to browse through
 *    the entire PCI config space registers:
 *
 *        cat pciCfg
 *        cat pciCfg
 *        cat pciCfg
 *        ...
 *
 *    When browsing to the end of the 4K PCI config space, the browse method
 *    shall wrap around to start reading from beginning again, and again...
 *
 * 2. For PCI config space register write access, it supports a single PCI
 *    config space register write in the size of a byte (8 bits), a word
 *    (16 bits), or a dword (32 bits). The command syntax is,
 *
 *        echo 2 <where> <count> <value> > pciCfg
 *
 *    where, 2 is the iDiag command for PCI config space write, <where> is
 *    the offset from the beginning of the device's PCI config space to write
 *    into, <count> is the size of data to write into the PCI config space,
 *    it will be 1 for writing a byte (8 bits), 2 for writing a word (16 bits
 *    or 2 bytes), or 4 for writing a dword (32 bits or 4 bytes), and <value>
 *    is the data to be written into the PCI config space register at the
 *    offset.
 *
 *    Examples:
 *    To disable PCI device's interrupt assertion,
 *
 *    1) Read in device's PCI config space register command field <cmd>:
 *
 *           echo 1 4 2 > pciCfg
 *           cat pciCfg
 *
 *    2) Set bit 10 (Interrupt Disable bit) in the <cmd>:
 *
 *           <cmd> = <cmd> | (1 < 10)
 *
 *    3) Write the modified command back:
 *
 *           echo 2 4 2 <cmd> > pciCfg
 *
 * 3. For PCI config space register set bits access, it supports a single PCI
 *    config space register set bits in the size of a byte (8 bits), a word
 *    (16 bits), or a dword (32 bits). The command syntax is,
 *
 *        echo 3 <where> <count> <bitmask> > pciCfg
 *
 *    where, 3 is the iDiag command for PCI config space set bits, <where> is
 *    the offset from the beginning of the device's PCI config space to set
 *    bits into, <count> is the size of the bitmask to set into the PCI config
 *    space, it will be 1 for setting a byte (8 bits), 2 for setting a word
 *    (16 bits or 2 bytes), or 4 for setting a dword (32 bits or 4 bytes), and
 *    <bitmask> is the bitmask, indicating the bits to be set into the PCI
 *    config space register at the offset. The logic performed to the content
 *    of the PCI config space register, regval, is,
 *
 *        regval |= <bitmask>
 *
 * 4. For PCI config space register clear bits access, it supports a single
 *    PCI config space register clear bits in the size of a byte (8 bits),
 *    a word (16 bits), or a dword (32 bits). The command syntax is,
 *
 *        echo 4 <where> <count> <bitmask> > pciCfg
 *
 *    where, 4 is the iDiag command for PCI config space clear bits, <where>
 *    is the offset from the beginning of the device's PCI config space to
 *    clear bits from, <count> is the size of the bitmask to set into the PCI
 *    config space, it will be 1 for setting a byte (8 bits), 2 for setting
 *    a word(16 bits or 2 bytes), or 4 for setting a dword (32 bits or 4
 *    bytes), and <bitmask> is the bitmask, indicating the bits to be cleared
 *    from the PCI config space register at the offset. the logic performed
 *    to the content of the PCI config space register, regval, is,
 *
 *        regval &= ~<bitmask>
 *
 * Note, for all single register read, write, set bits, or clear bits access,
 * the offset (<where>) must be aligned with the size of the data:
 *
 * For data size of byte (8 bits), the offset must be aligned to the byte
 * boundary; for data size of word (16 bits), the offset must be aligned
 * to the word boundary; while for data size of dword (32 bits), the offset
 * must be aligned to the dword boundary. Otherwise, the interface will
 * return the error:
 *
 *     "-bash: echo: write error: Invalid argument".
 *
 * For example:
 *
 *     echo 1 2 4 > pciCfg
 *     -bash: echo: write error: Invalid argument
 *
 * Note also, all of the numbers in the command fields for all read, write,
 * set bits, and clear bits PCI config space register command fields can be
 * either decimal or hex.
 *
 * For example,
 *     echo 1 0 4096 > pciCfg
 *
 * will be the same as
 *     echo 1 0 0x1000 > pciCfg
 *
 * And,
 *     echo 2 155 1 10 > pciCfg
 *
 * will be
 *     echo 2 0x9b 1 0xa > pciCfg
 */

/**
 * lpfc_idiag_cmd_get - Get and parse idiag debugfs comands from user space
 * @buf: The pointer to the user space buffer.
 * @nbytes: The number of bytes in the user space buffer.
 * @idiag_cmd: pointer to the idiag command struct.
 *
 * This routine reads data from debugfs user space buffer and parses the
 * buffer for getting the idiag command and arguments. The while space in
 * between the set of data is used as the parsing separator.
 *
 * This routine returns 0 when successful, it returns proper error code
 * back to the user space in error conditions.
 */
static int lpfc_idiag_cmd_get(const char __user *buf, size_t nbytes,
			      struct lpfc_idiag_cmd *idiag_cmd)
{
	char mybuf[64];
	char *pbuf, *step_str;
	int bsize, i;

	/* Protect copy from user */
	if (!access_ok(VERIFY_READ, buf, nbytes))
		return -EFAULT;

	memset(mybuf, 0, sizeof(mybuf));
	memset(idiag_cmd, 0, sizeof(*idiag_cmd));
	bsize = min(nbytes, (sizeof(mybuf)-1));

	if (copy_from_user(mybuf, buf, bsize))
		return -EFAULT;
	pbuf = &mybuf[0];
	step_str = strsep(&pbuf, "\t ");

	/* The opcode must present */
	if (!step_str)
		return -EINVAL;

	idiag_cmd->opcode = simple_strtol(step_str, NULL, 0);
	if (idiag_cmd->opcode == 0)
		return -EINVAL;

	for (i = 0; i < LPFC_IDIAG_CMD_DATA_SIZE; i++) {
		step_str = strsep(&pbuf, "\t ");
		if (!step_str)
			return 0;
		idiag_cmd->data[i] = simple_strtol(step_str, NULL, 0);
	}
	return 0;
}

/**
 * lpfc_idiag_open - idiag open debugfs
 * @inode: The inode pointer that contains a pointer to phba.
 * @file: The file pointer to attach the file operation.
 *
 * Description:
 * This routine is the entry point for the debugfs open file operation. It
 * gets the reference to phba from the i_private field in @inode, it then
 * allocates buffer for the file operation, performs the necessary PCI config
 * space read into the allocated buffer according to the idiag user command
 * setup, and then returns a pointer to buffer in the private_data field in
 * @file.
 *
 * Returns:
 * This function returns zero if successful. On error it will return an
 * negative error value.
 **/
static int
lpfc_idiag_open(struct inode *inode, struct file *file)
{
	struct lpfc_debug *debug;

	debug = kmalloc(sizeof(*debug), GFP_KERNEL);
	if (!debug)
		return -ENOMEM;

	debug->i_private = inode->i_private;
	debug->buffer = NULL;
	file->private_data = debug;

	return 0;
}

/**
 * lpfc_idiag_release - Release idiag access file operation
 * @inode: The inode pointer that contains a vport pointer. (unused)
 * @file: The file pointer that contains the buffer to release.
 *
 * Description:
 * This routine is the generic release routine for the idiag access file
 * operation, it frees the buffer that was allocated when the debugfs file
 * was opened.
 *
 * Returns:
 * This function returns zero.
 **/
static int
lpfc_idiag_release(struct inode *inode, struct file *file)
{
	struct lpfc_debug *debug = file->private_data;

	/* Free the buffers to the file operation */
	kfree(debug->buffer);
	kfree(debug);

	return 0;
}

/**
 * lpfc_idiag_cmd_release - Release idiag cmd access file operation
 * @inode: The inode pointer that contains a vport pointer. (unused)
 * @file: The file pointer that contains the buffer to release.
 *
 * Description:
 * This routine frees the buffer that was allocated when the debugfs file
 * was opened. It also reset the fields in the idiag command struct in the
 * case the command is not continuous browsing of the data structure.
 *
 * Returns:
 * This function returns zero.
 **/
static int
lpfc_idiag_cmd_release(struct inode *inode, struct file *file)
{
	struct lpfc_debug *debug = file->private_data;

	/* Read PCI config register, if not read all, clear command fields */
	if ((debug->op == LPFC_IDIAG_OP_RD) &&
	    (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_RD))
		if ((idiag.cmd.data[1] == sizeof(uint8_t)) ||
		    (idiag.cmd.data[1] == sizeof(uint16_t)) ||
		    (idiag.cmd.data[1] == sizeof(uint32_t)))
			memset(&idiag, 0, sizeof(idiag));

	/* Write PCI config register, clear command fields */
	if ((debug->op == LPFC_IDIAG_OP_WR) &&
	    (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_WR))
		memset(&idiag, 0, sizeof(idiag));

	/* Free the buffers to the file operation */
	kfree(debug->buffer);
	kfree(debug);

	return 0;
}

/**
 * lpfc_idiag_pcicfg_read - idiag debugfs read pcicfg
 * @file: The file pointer to read from.
 * @buf: The buffer to copy the data to.
 * @nbytes: The number of bytes to read.
 * @ppos: The position in the file to start reading from.
 *
 * Description:
 * This routine reads data from the @phba pci config space according to the
 * idiag command, and copies to user @buf. Depending on the PCI config space
 * read command setup, it does either a single register read of a byte
 * (8 bits), a word (16 bits), or a dword (32 bits) or browsing through all
 * registers from the 4K extended PCI config space.
 *
 * Returns:
 * This function returns the amount of data that was read (this could be less
 * than @nbytes if the end of the file was reached) or a negative error value.
 **/
static ssize_t
lpfc_idiag_pcicfg_read(struct file *file, char __user *buf, size_t nbytes,
		       loff_t *ppos)
{
	struct lpfc_debug *debug = file->private_data;
	struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private;
	int offset_label, offset, len = 0, index = LPFC_PCI_CFG_RD_SIZE;
	int where, count;
	char *pbuffer;
	struct pci_dev *pdev;
	uint32_t u32val;
	uint16_t u16val;
	uint8_t u8val;

	pdev = phba->pcidev;
	if (!pdev)
		return 0;

	/* This is a user read operation */
	debug->op = LPFC_IDIAG_OP_RD;

	if (!debug->buffer)
		debug->buffer = kmalloc(LPFC_PCI_CFG_SIZE, GFP_KERNEL);
	if (!debug->buffer)
		return 0;
	pbuffer = debug->buffer;

	if (*ppos)
		return 0;

	if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_RD) {
		where = idiag.cmd.data[0];
		count = idiag.cmd.data[1];
	} else
		return 0;

	/* Read single PCI config space register */
	switch (count) {
	case SIZE_U8: /* byte (8 bits) */
		pci_read_config_byte(pdev, where, &u8val);
		len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len,
				"%03x: %02x\n", where, u8val);
		break;
	case SIZE_U16: /* word (16 bits) */
		pci_read_config_word(pdev, where, &u16val);
		len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len,
				"%03x: %04x\n", where, u16val);
		break;
	case SIZE_U32: /* double word (32 bits) */
		pci_read_config_dword(pdev, where, &u32val);
		len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len,
				"%03x: %08x\n", where, u32val);
		break;
	case LPFC_PCI_CFG_SIZE: /* browse all */
		goto pcicfg_browse;
		break;
	default:
		/* illegal count */
		len = 0;
		break;
	}
	return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len);

pcicfg_browse:

	/* Browse all PCI config space registers */
	offset_label = idiag.offset.last_rd;
	offset = offset_label;

	/* Read PCI config space */
	len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len,
			"%03x: ", offset_label);
	while (index > 0) {
		pci_read_config_dword(pdev, offset, &u32val);
		len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len,
				"%08x ", u32val);
		offset += sizeof(uint32_t);
		index -= sizeof(uint32_t);
		if (!index)
			len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len,
					"\n");
		else if (!(index % (8 * sizeof(uint32_t)))) {
			offset_label += (8 * sizeof(uint32_t));
			len += snprintf(pbuffer+len, LPFC_PCI_CFG_SIZE-len,
					"\n%03x: ", offset_label);
		}
	}

	/* Set up the offset for next portion of pci cfg read */
	idiag.offset.last_rd += LPFC_PCI_CFG_RD_SIZE;
	if (idiag.offset.last_rd >= LPFC_PCI_CFG_SIZE)
		idiag.offset.last_rd = 0;

	return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len);
}

/**
 * lpfc_idiag_pcicfg_write - Syntax check and set up idiag pcicfg commands
 * @file: The file pointer to read from.
 * @buf: The buffer to copy the user data from.
 * @nbytes: The number of bytes to get.
 * @ppos: The position in the file to start reading from.
 *
 * This routine get the debugfs idiag command struct from user space and
 * then perform the syntax check for PCI config space read or write command
 * accordingly. In the case of PCI config space read command, it sets up
 * the command in the idiag command struct for the debugfs read operation.
 * In the case of PCI config space write operation, it executes the write
 * operation into the PCI config space accordingly.
 *
 * It returns the @nbytges passing in from debugfs user space when successful.
 * In case of error conditions, it returns proper error code back to the user
 * space.
 */
static ssize_t
lpfc_idiag_pcicfg_write(struct file *file, const char __user *buf,
			size_t nbytes, loff_t *ppos)
{
	struct lpfc_debug *debug = file->private_data;
	struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private;
	uint32_t where, value, count;
	uint32_t u32val;
	uint16_t u16val;
	uint8_t u8val;
	struct pci_dev *pdev;
	int rc;

	pdev = phba->pcidev;
	if (!pdev)
		return -EFAULT;

	/* This is a user write operation */
	debug->op = LPFC_IDIAG_OP_WR;

	rc = lpfc_idiag_cmd_get(buf, nbytes, &idiag.cmd);
	if (rc)
		return rc;

	if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_RD) {
		/* Read command from PCI config space, set up command fields */
		where = idiag.cmd.data[0];
		count = idiag.cmd.data[1];
		if (count == LPFC_PCI_CFG_SIZE) {
			if (where != 0)
				goto error_out;
		} else if ((count != sizeof(uint8_t)) &&
			   (count != sizeof(uint16_t)) &&
			   (count != sizeof(uint32_t)))
			goto error_out;
		if (count == sizeof(uint8_t)) {
			if (where > LPFC_PCI_CFG_SIZE - sizeof(uint8_t))
				goto error_out;
			if (where % sizeof(uint8_t))
				goto error_out;
		}
		if (count == sizeof(uint16_t)) {
			if (where > LPFC_PCI_CFG_SIZE - sizeof(uint16_t))
				goto error_out;
			if (where % sizeof(uint16_t))
				goto error_out;
		}
		if (count == sizeof(uint32_t)) {
			if (where > LPFC_PCI_CFG_SIZE - sizeof(uint32_t))
				goto error_out;
			if (where % sizeof(uint32_t))
				goto error_out;
		}
	} else if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_WR ||
		   idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_ST ||
		   idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_CL) {
		/* Write command to PCI config space, read-modify-write */
		where = idiag.cmd.data[0];
		count = idiag.cmd.data[1];
		value = idiag.cmd.data[2];
		/* Sanity checks */
		if ((count != sizeof(uint8_t)) &&
		    (count != sizeof(uint16_t)) &&
		    (count != sizeof(uint32_t)))
			goto error_out;
		if (count == sizeof(uint8_t)) {
			if (where > LPFC_PCI_CFG_SIZE - sizeof(uint8_t))
				goto error_out;
			if (where % sizeof(uint8_t))
				goto error_out;
			if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_WR)
				pci_write_config_byte(pdev, where,
						      (uint8_t)value);
			if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_ST) {
				rc = pci_read_config_byte(pdev, where, &u8val);
				if (!rc) {
					u8val |= (uint8_t)value;
					pci_write_config_byte(pdev, where,
							      u8val);
				}
			}
			if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_CL) {
				rc = pci_read_config_byte(pdev, where, &u8val);
				if (!rc) {
					u8val &= (uint8_t)(~value);
					pci_write_config_byte(pdev, where,
							      u8val);
				}
			}
		}
		if (count == sizeof(uint16_t)) {
			if (where > LPFC_PCI_CFG_SIZE - sizeof(uint16_t))
				goto error_out;
			if (where % sizeof(uint16_t))
				goto error_out;
			if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_WR)
				pci_write_config_word(pdev, where,
						      (uint16_t)value);
			if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_ST) {
				rc = pci_read_config_word(pdev, where, &u16val);
				if (!rc) {
					u16val |= (uint16_t)value;
					pci_write_config_word(pdev, where,
							      u16val);
				}
			}
			if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_CL) {
				rc = pci_read_config_word(pdev, where, &u16val);
				if (!rc) {
					u16val &= (uint16_t)(~value);
					pci_write_config_word(pdev, where,
							      u16val);
				}
			}
		}
		if (count == sizeof(uint32_t)) {
			if (where > LPFC_PCI_CFG_SIZE - sizeof(uint32_t))
				goto error_out;
			if (where % sizeof(uint32_t))
				goto error_out;
			if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_WR)
				pci_write_config_dword(pdev, where, value);
			if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_ST) {
				rc = pci_read_config_dword(pdev, where,
							   &u32val);
				if (!rc) {
					u32val |= value;
					pci_write_config_dword(pdev, where,
							       u32val);
				}
			}
			if (idiag.cmd.opcode == LPFC_IDIAG_CMD_PCICFG_CL) {
				rc = pci_read_config_dword(pdev, where,
							   &u32val);
				if (!rc) {
					u32val &= ~value;
					pci_write_config_dword(pdev, where,
							       u32val);
				}
			}
		}
	} else
		/* All other opecodes are illegal for now */
		goto error_out;

	return nbytes;
error_out:
	memset(&idiag, 0, sizeof(idiag));
	return -EINVAL;
}

/**
 * lpfc_idiag_queinfo_read - idiag debugfs read queue information
 * @file: The file pointer to read from.
 * @buf: The buffer to copy the data to.
 * @nbytes: The number of bytes to read.
 * @ppos: The position in the file to start reading from.
 *
 * Description:
 * This routine reads data from the @phba SLI4 PCI function queue information,
 * and copies to user @buf.
 *
 * Returns:
 * This function returns the amount of data that was read (this could be less
 * than @nbytes if the end of the file was reached) or a negative error value.
 **/
static ssize_t
lpfc_idiag_queinfo_read(struct file *file, char __user *buf, size_t nbytes,
			loff_t *ppos)
{
	struct lpfc_debug *debug = file->private_data;
	struct lpfc_hba *phba = (struct lpfc_hba *)debug->i_private;
	int len = 0, fcp_qidx;
	char *pbuffer;

	if (!debug->buffer)
		debug->buffer = kmalloc(LPFC_QUE_INFO_GET_BUF_SIZE, GFP_KERNEL);
	if (!debug->buffer)
		return 0;
	pbuffer = debug->buffer;

	if (*ppos)
		return 0;

	/* Get slow-path event queue information */
	len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len,
			"Slow-path EQ information:\n");
	len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len,
			"\tID [%02d], EQE-COUNT [%04d], "
			"HOST-INDEX [%04x], PORT-INDEX [%04x]\n\n",
			phba->sli4_hba.sp_eq->queue_id,
			phba->sli4_hba.sp_eq->entry_count,
			phba->sli4_hba.sp_eq->host_index,
			phba->sli4_hba.sp_eq->hba_index);

	/* Get fast-path event queue information */
	len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len,
			"Fast-path EQ information:\n");
	for (fcp_qidx = 0; fcp_qidx < phba->cfg_fcp_eq_count; fcp_qidx++) {
		len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len,
				"\tID [%02d], EQE-COUNT [%04d], "
				"HOST-INDEX [%04x], PORT-INDEX [%04x]\n",
				phba->sli4_hba.fp_eq[fcp_qidx]->queue_id,
				phba->sli4_hba.fp_eq[fcp_qidx]->entry_count,
				phba->sli4_hba.fp_eq[fcp_qidx]->host_index,
				phba->sli4_hba.fp_eq[fcp_qidx]->hba_index);
	}
	len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "\n");

	/* Get mailbox complete queue information */
	len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len,
			"Mailbox CQ information:\n");
	len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len,
			"\t\tAssociated EQ-ID [%02d]:\n",
			phba->sli4_hba.mbx_cq->assoc_qid);
	len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len,
			"\tID [%02d], CQE-COUNT [%04d], "
			"HOST-INDEX [%04x], PORT-INDEX [%04x]\n\n",
			phba->sli4_hba.mbx_cq->queue_id,
			phba->sli4_hba.mbx_cq->entry_count,
			phba->sli4_hba.mbx_cq->host_index,
			phba->sli4_hba.mbx_cq->hba_index);

	/* Get slow-path complete queue information */
	len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len,
			"Slow-path CQ information:\n");
	len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len,
			"\t\tAssociated EQ-ID [%02d]:\n",
			phba->sli4_hba.els_cq->assoc_qid);
	len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len,
			"\tID [%02d], CQE-COUNT [%04d], "
			"HOST-INDEX [%04x], PORT-INDEX [%04x]\n\n",
			phba->sli4_hba.els_cq->queue_id,
			phba->sli4_hba.els_cq->entry_count,
			phba->sli4_hba.els_cq->host_index,
			phba->sli4_hba.els_cq->hba_index);

	/* Get fast-path complete queue information */
	len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len,
			"Fast-path CQ information:\n");
	for (fcp_qidx = 0; fcp_qidx < phba->cfg_fcp_eq_count; fcp_qidx++) {
		len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len,
				"\t\tAssociated EQ-ID [%02d]:\n",
				phba->sli4_hba.fcp_cq[fcp_qidx]->assoc_qid);
		len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len,
		"\tID [%02d], EQE-COUNT [%04d], "
		"HOST-INDEX [%04x], PORT-INDEX [%04x]\n",
		phba->sli4_hba.fcp_cq[fcp_qidx]->queue_id,
		phba->sli4_hba.fcp_cq[fcp_qidx]->entry_count,
		phba->sli4_hba.fcp_cq[fcp_qidx]->host_index,
		phba->sli4_hba.fcp_cq[fcp_qidx]->hba_index);
	}
	len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "\n");

	/* Get mailbox queue information */
	len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len,
			"Mailbox MQ information:\n");
	len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len,
			"\t\tAssociated CQ-ID [%02d]:\n",
			phba->sli4_hba.mbx_wq->assoc_qid);
	len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len,
			"\tID [%02d], MQE-COUNT [%04d], "
			"HOST-INDEX [%04x], PORT-INDEX [%04x]\n\n",
			phba->sli4_hba.mbx_wq->queue_id,
			phba->sli4_hba.mbx_wq->entry_count,
			phba->sli4_hba.mbx_wq->host_index,
			phba->sli4_hba.mbx_wq->hba_index);

	/* Get slow-path work queue information */
	len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len,
			"Slow-path WQ information:\n");
	len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len,
			"\t\tAssociated CQ-ID [%02d]:\n",
			phba->sli4_hba.els_wq->assoc_qid);
	len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len,
			"\tID [%02d], WQE-COUNT [%04d], "
			"HOST-INDEX [%04x], PORT-INDEX [%04x]\n\n",
			phba->sli4_hba.els_wq->queue_id,
			phba->sli4_hba.els_wq->entry_count,
			phba->sli4_hba.els_wq->host_index,
			phba->sli4_hba.els_wq->hba_index);

	/* Get fast-path work queue information */
	len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len,
			"Fast-path WQ information:\n");
	for (fcp_qidx = 0; fcp_qidx < phba->cfg_fcp_wq_count; fcp_qidx++) {
		len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len,
				"\t\tAssociated CQ-ID [%02d]:\n",
				phba->sli4_hba.fcp_wq[fcp_qidx]->assoc_qid);
		len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len,
				"\tID [%02d], WQE-COUNT [%04d], "
				"HOST-INDEX [%04x], PORT-INDEX [%04x]\n",
				phba->sli4_hba.fcp_wq[fcp_qidx]->queue_id,
				phba->sli4_hba.fcp_wq[fcp_qidx]->entry_count,
				phba->sli4_hba.fcp_wq[fcp_qidx]->host_index,
				phba->sli4_hba.fcp_wq[fcp_qidx]->hba_index);
	}
	len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len, "\n");

	/* Get receive queue information */
	len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len,
			"Slow-path RQ information:\n");
	len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len,
			"\t\tAssociated CQ-ID [%02d]:\n",
			phba->sli4_hba.hdr_rq->assoc_qid);
	len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len,
			"\tID [%02d], RHQE-COUNT [%04d], "
			"HOST-INDEX [%04x], PORT-INDEX [%04x]\n",
			phba->sli4_hba.hdr_rq->queue_id,
			phba->sli4_hba.hdr_rq->entry_count,
			phba->sli4_hba.hdr_rq->host_index,
			phba->sli4_hba.hdr_rq->hba_index);
	len += snprintf(pbuffer+len, LPFC_QUE_INFO_GET_BUF_SIZE-len,
			"\tID [%02d], RDQE-COUNT [%04d], "
			"HOST-INDEX [%04x], PORT-INDEX [%04x]\n",
			phba->sli4_hba.dat_rq->queue_id,
			phba->sli4_hba.dat_rq->entry_count,
			phba->sli4_hba.dat_rq->host_index,
			phba->sli4_hba.dat_rq->hba_index);

	return simple_read_from_buffer(buf, nbytes, ppos, pbuffer, len);
}

#undef lpfc_debugfs_op_disc_trc
static const struct file_operations lpfc_debugfs_op_disc_trc = {
	.owner =        THIS_MODULE,
	.open =         lpfc_debugfs_disc_trc_open,
	.llseek =       lpfc_debugfs_lseek,
	.read =         lpfc_debugfs_read,
	.release =      lpfc_debugfs_release,
};

#undef lpfc_debugfs_op_nodelist
static const struct file_operations lpfc_debugfs_op_nodelist = {
	.owner =        THIS_MODULE,
	.open =         lpfc_debugfs_nodelist_open,
	.llseek =       lpfc_debugfs_lseek,
	.read =         lpfc_debugfs_read,
	.release =      lpfc_debugfs_release,
};

#undef lpfc_debugfs_op_hbqinfo
static const struct file_operations lpfc_debugfs_op_hbqinfo = {
	.owner =        THIS_MODULE,
	.open =         lpfc_debugfs_hbqinfo_open,
	.llseek =       lpfc_debugfs_lseek,
	.read =         lpfc_debugfs_read,
	.release =      lpfc_debugfs_release,
};

#undef lpfc_debugfs_op_dumpHBASlim
static const struct file_operations lpfc_debugfs_op_dumpHBASlim = {
	.owner =        THIS_MODULE,
	.open =         lpfc_debugfs_dumpHBASlim_open,
	.llseek =       lpfc_debugfs_lseek,
	.read =         lpfc_debugfs_read,
	.release =      lpfc_debugfs_release,
};

#undef lpfc_debugfs_op_dumpHostSlim
static const struct file_operations lpfc_debugfs_op_dumpHostSlim = {
	.owner =        THIS_MODULE,
	.open =         lpfc_debugfs_dumpHostSlim_open,
	.llseek =       lpfc_debugfs_lseek,
	.read =         lpfc_debugfs_read,
	.release =      lpfc_debugfs_release,
};

#undef lpfc_debugfs_op_dumpData
static const struct file_operations lpfc_debugfs_op_dumpData = {
	.owner =        THIS_MODULE,
	.open =         lpfc_debugfs_dumpData_open,
	.llseek =       lpfc_debugfs_lseek,
	.read =         lpfc_debugfs_read,
	.write =	lpfc_debugfs_dumpDataDif_write,
	.release =      lpfc_debugfs_dumpDataDif_release,
};

#undef lpfc_debugfs_op_dumpDif
static const struct file_operations lpfc_debugfs_op_dumpDif = {
	.owner =        THIS_MODULE,
	.open =         lpfc_debugfs_dumpDif_open,
	.llseek =       lpfc_debugfs_lseek,
	.read =         lpfc_debugfs_read,
	.write =	lpfc_debugfs_dumpDataDif_write,
	.release =      lpfc_debugfs_dumpDataDif_release,
};

#undef lpfc_debugfs_op_slow_ring_trc
static const struct file_operations lpfc_debugfs_op_slow_ring_trc = {
	.owner =        THIS_MODULE,
	.open =         lpfc_debugfs_slow_ring_trc_open,
	.llseek =       lpfc_debugfs_lseek,
	.read =         lpfc_debugfs_read,
	.release =      lpfc_debugfs_release,
};

static struct dentry *lpfc_debugfs_root = NULL;
static atomic_t lpfc_debugfs_hba_count;

/*
 * File operations for the iDiag debugfs
 */
#undef lpfc_idiag_op_pciCfg
static const struct file_operations lpfc_idiag_op_pciCfg = {
	.owner =        THIS_MODULE,
	.open =         lpfc_idiag_open,
	.llseek =       lpfc_debugfs_lseek,
	.read =         lpfc_idiag_pcicfg_read,
	.write =        lpfc_idiag_pcicfg_write,
	.release =      lpfc_idiag_cmd_release,
};

#undef lpfc_idiag_op_queInfo
static const struct file_operations lpfc_idiag_op_queInfo = {
	.owner =        THIS_MODULE,
	.open =         lpfc_idiag_open,
	.read =         lpfc_idiag_queinfo_read,
	.release =      lpfc_idiag_release,
};

#endif

/**
 * lpfc_debugfs_initialize - Initialize debugfs for a vport
 * @vport: The vport pointer to initialize.
 *
 * Description:
 * When Debugfs is configured this routine sets up the lpfc debugfs file system.
 * If not already created, this routine will create the lpfc directory, and
 * lpfcX directory (for this HBA), and vportX directory for this vport. It will
 * also create each file used to access lpfc specific debugfs information.
 **/
inline void
lpfc_debugfs_initialize(struct lpfc_vport *vport)
{
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
	struct lpfc_hba   *phba = vport->phba;
	char name[64];
	uint32_t num, i;

	if (!lpfc_debugfs_enable)
		return;

	/* Setup lpfc root directory */
	if (!lpfc_debugfs_root) {
		lpfc_debugfs_root = debugfs_create_dir("lpfc", NULL);
		atomic_set(&lpfc_debugfs_hba_count, 0);
		if (!lpfc_debugfs_root) {
			lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
					 "0408 Cannot create debugfs root\n");
			goto debug_failed;
		}
	}
	if (!lpfc_debugfs_start_time)
		lpfc_debugfs_start_time = jiffies;

	/* Setup funcX directory for specific HBA PCI function */
	snprintf(name, sizeof(name), "fn%d", phba->brd_no);
	if (!phba->hba_debugfs_root) {
		phba->hba_debugfs_root =
			debugfs_create_dir(name, lpfc_debugfs_root);
		if (!phba->hba_debugfs_root) {
			lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
					 "0412 Cannot create debugfs hba\n");
			goto debug_failed;
		}
		atomic_inc(&lpfc_debugfs_hba_count);
		atomic_set(&phba->debugfs_vport_count, 0);

		/* Setup hbqinfo */
		snprintf(name, sizeof(name), "hbqinfo");
		phba->debug_hbqinfo =
			debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
				 phba->hba_debugfs_root,
				 phba, &lpfc_debugfs_op_hbqinfo);
		if (!phba->debug_hbqinfo) {
			lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
				"0411 Cannot create debugfs hbqinfo\n");
			goto debug_failed;
		}

		/* Setup dumpHBASlim */
		if (phba->sli_rev < LPFC_SLI_REV4) {
			snprintf(name, sizeof(name), "dumpHBASlim");
			phba->debug_dumpHBASlim =
				debugfs_create_file(name,
					S_IFREG|S_IRUGO|S_IWUSR,
					phba->hba_debugfs_root,
					phba, &lpfc_debugfs_op_dumpHBASlim);
			if (!phba->debug_dumpHBASlim) {
				lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
						 "0413 Cannot create debugfs "
						"dumpHBASlim\n");
				goto debug_failed;
			}
		} else
			phba->debug_dumpHBASlim = NULL;

		/* Setup dumpHostSlim */
		if (phba->sli_rev < LPFC_SLI_REV4) {
			snprintf(name, sizeof(name), "dumpHostSlim");
			phba->debug_dumpHostSlim =
				debugfs_create_file(name,
					S_IFREG|S_IRUGO|S_IWUSR,
					phba->hba_debugfs_root,
					phba, &lpfc_debugfs_op_dumpHostSlim);
			if (!phba->debug_dumpHostSlim) {
				lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
						 "0414 Cannot create debugfs "
						 "dumpHostSlim\n");
				goto debug_failed;
			}
		} else
			phba->debug_dumpHBASlim = NULL;

		/* Setup dumpData */
		snprintf(name, sizeof(name), "dumpData");
		phba->debug_dumpData =
			debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
				 phba->hba_debugfs_root,
				 phba, &lpfc_debugfs_op_dumpData);
		if (!phba->debug_dumpData) {
			lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
				"0800 Cannot create debugfs dumpData\n");
			goto debug_failed;
		}

		/* Setup dumpDif */
		snprintf(name, sizeof(name), "dumpDif");
		phba->debug_dumpDif =
			debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
				 phba->hba_debugfs_root,
				 phba, &lpfc_debugfs_op_dumpDif);
		if (!phba->debug_dumpDif) {
			lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
				"0801 Cannot create debugfs dumpDif\n");
			goto debug_failed;
		}

		/* Setup slow ring trace */
		if (lpfc_debugfs_max_slow_ring_trc) {
			num = lpfc_debugfs_max_slow_ring_trc - 1;
			if (num & lpfc_debugfs_max_slow_ring_trc) {
				/* Change to be a power of 2 */
				num = lpfc_debugfs_max_slow_ring_trc;
				i = 0;
				while (num > 1) {
					num = num >> 1;
					i++;
				}
				lpfc_debugfs_max_slow_ring_trc = (1 << i);
				printk(KERN_ERR
				       "lpfc_debugfs_max_disc_trc changed to "
				       "%d\n", lpfc_debugfs_max_disc_trc);
			}
		}

		snprintf(name, sizeof(name), "slow_ring_trace");
		phba->debug_slow_ring_trc =
			debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
				 phba->hba_debugfs_root,
				 phba, &lpfc_debugfs_op_slow_ring_trc);
		if (!phba->debug_slow_ring_trc) {
			lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
					 "0415 Cannot create debugfs "
					 "slow_ring_trace\n");
			goto debug_failed;
		}
		if (!phba->slow_ring_trc) {
			phba->slow_ring_trc = kmalloc(
				(sizeof(struct lpfc_debugfs_trc) *
				lpfc_debugfs_max_slow_ring_trc),
				GFP_KERNEL);
			if (!phba->slow_ring_trc) {
				lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
						 "0416 Cannot create debugfs "
						 "slow_ring buffer\n");
				goto debug_failed;
			}
			atomic_set(&phba->slow_ring_trc_cnt, 0);
			memset(phba->slow_ring_trc, 0,
				(sizeof(struct lpfc_debugfs_trc) *
				lpfc_debugfs_max_slow_ring_trc));
		}
	}

	snprintf(name, sizeof(name), "vport%d", vport->vpi);
	if (!vport->vport_debugfs_root) {
		vport->vport_debugfs_root =
			debugfs_create_dir(name, phba->hba_debugfs_root);
		if (!vport->vport_debugfs_root) {
			lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
					 "0417 Cant create debugfs\n");
			goto debug_failed;
		}
		atomic_inc(&phba->debugfs_vport_count);
	}

	if (lpfc_debugfs_max_disc_trc) {
		num = lpfc_debugfs_max_disc_trc - 1;
		if (num & lpfc_debugfs_max_disc_trc) {
			/* Change to be a power of 2 */
			num = lpfc_debugfs_max_disc_trc;
			i = 0;
			while (num > 1) {
				num = num >> 1;
				i++;
			}
			lpfc_debugfs_max_disc_trc = (1 << i);
			printk(KERN_ERR
			       "lpfc_debugfs_max_disc_trc changed to %d\n",
			       lpfc_debugfs_max_disc_trc);
		}
	}

	vport->disc_trc = kzalloc(
		(sizeof(struct lpfc_debugfs_trc) * lpfc_debugfs_max_disc_trc),
		GFP_KERNEL);

	if (!vport->disc_trc) {
		lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
				 "0418 Cannot create debugfs disc trace "
				 "buffer\n");
		goto debug_failed;
	}
	atomic_set(&vport->disc_trc_cnt, 0);

	snprintf(name, sizeof(name), "discovery_trace");
	vport->debug_disc_trc =
		debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
				 vport->vport_debugfs_root,
				 vport, &lpfc_debugfs_op_disc_trc);
	if (!vport->debug_disc_trc) {
		lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
				 "0419 Cannot create debugfs "
				 "discovery_trace\n");
		goto debug_failed;
	}
	snprintf(name, sizeof(name), "nodelist");
	vport->debug_nodelist =
		debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
				 vport->vport_debugfs_root,
				 vport, &lpfc_debugfs_op_nodelist);
	if (!vport->debug_nodelist) {
		lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
				 "0409 Cant create debugfs nodelist\n");
		goto debug_failed;
	}

	/*
	 * iDiag debugfs root entry points for SLI4 device only
	 */
	if (phba->sli_rev < LPFC_SLI_REV4)
		goto debug_failed;

	snprintf(name, sizeof(name), "iDiag");
	if (!phba->idiag_root) {
		phba->idiag_root =
			debugfs_create_dir(name, phba->hba_debugfs_root);
		if (!phba->idiag_root) {
			lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
					 "2922 Can't create idiag debugfs\n");
			goto debug_failed;
		}
		/* Initialize iDiag data structure */
		memset(&idiag, 0, sizeof(idiag));
	}

	/* iDiag read PCI config space */
	snprintf(name, sizeof(name), "pciCfg");
	if (!phba->idiag_pci_cfg) {
		phba->idiag_pci_cfg =
			debugfs_create_file(name, S_IFREG|S_IRUGO|S_IWUSR,
				phba->idiag_root, phba, &lpfc_idiag_op_pciCfg);
		if (!phba->idiag_pci_cfg) {
			lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
					 "2923 Can't create idiag debugfs\n");
			goto debug_failed;
		}
		idiag.offset.last_rd = 0;
	}

	/* iDiag get PCI function queue information */
	snprintf(name, sizeof(name), "queInfo");
	if (!phba->idiag_que_info) {
		phba->idiag_que_info =
			debugfs_create_file(name, S_IFREG|S_IRUGO,
			phba->idiag_root, phba, &lpfc_idiag_op_queInfo);
		if (!phba->idiag_que_info) {
			lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
					 "2924 Can't create idiag debugfs\n");
			goto debug_failed;
		}
	}

debug_failed:
	return;
#endif
}

/**
 * lpfc_debugfs_terminate -  Tear down debugfs infrastructure for this vport
 * @vport: The vport pointer to remove from debugfs.
 *
 * Description:
 * When Debugfs is configured this routine removes debugfs file system elements
 * that are specific to this vport. It also checks to see if there are any
 * users left for the debugfs directories associated with the HBA and driver. If
 * this is the last user of the HBA directory or driver directory then it will
 * remove those from the debugfs infrastructure as well.
 **/
inline void
lpfc_debugfs_terminate(struct lpfc_vport *vport)
{
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
	struct lpfc_hba   *phba = vport->phba;

	if (vport->disc_trc) {
		kfree(vport->disc_trc);
		vport->disc_trc = NULL;
	}
	if (vport->debug_disc_trc) {
		debugfs_remove(vport->debug_disc_trc); /* discovery_trace */
		vport->debug_disc_trc = NULL;
	}
	if (vport->debug_nodelist) {
		debugfs_remove(vport->debug_nodelist); /* nodelist */
		vport->debug_nodelist = NULL;
	}

	if (vport->vport_debugfs_root) {
		debugfs_remove(vport->vport_debugfs_root); /* vportX */
		vport->vport_debugfs_root = NULL;
		atomic_dec(&phba->debugfs_vport_count);
	}
	if (atomic_read(&phba->debugfs_vport_count) == 0) {

		if (phba->debug_hbqinfo) {
			debugfs_remove(phba->debug_hbqinfo); /* hbqinfo */
			phba->debug_hbqinfo = NULL;
		}
		if (phba->debug_dumpHBASlim) {
			debugfs_remove(phba->debug_dumpHBASlim); /* HBASlim */
			phba->debug_dumpHBASlim = NULL;
		}
		if (phba->debug_dumpHostSlim) {
			debugfs_remove(phba->debug_dumpHostSlim); /* HostSlim */
			phba->debug_dumpHostSlim = NULL;
		}
		if (phba->debug_dumpData) {
			debugfs_remove(phba->debug_dumpData); /* dumpData */
			phba->debug_dumpData = NULL;
		}

		if (phba->debug_dumpDif) {
			debugfs_remove(phba->debug_dumpDif); /* dumpDif */
			phba->debug_dumpDif = NULL;
		}

		if (phba->slow_ring_trc) {
			kfree(phba->slow_ring_trc);
			phba->slow_ring_trc = NULL;
		}
		if (phba->debug_slow_ring_trc) {
			/* slow_ring_trace */
			debugfs_remove(phba->debug_slow_ring_trc);
			phba->debug_slow_ring_trc = NULL;
		}

		/*
		 * iDiag release
		 */
		if (phba->sli_rev == LPFC_SLI_REV4) {
			if (phba->idiag_que_info) {
				/* iDiag queInfo */
				debugfs_remove(phba->idiag_que_info);
				phba->idiag_que_info = NULL;
			}
			if (phba->idiag_pci_cfg) {
				/* iDiag pciCfg */
				debugfs_remove(phba->idiag_pci_cfg);
				phba->idiag_pci_cfg = NULL;
			}

			/* Finally remove the iDiag debugfs root */
			if (phba->idiag_root) {
				/* iDiag root */
				debugfs_remove(phba->idiag_root);
				phba->idiag_root = NULL;
			}
		}

		if (phba->hba_debugfs_root) {
			debugfs_remove(phba->hba_debugfs_root); /* fnX */
			phba->hba_debugfs_root = NULL;
			atomic_dec(&lpfc_debugfs_hba_count);
		}

		if (atomic_read(&lpfc_debugfs_hba_count) == 0) {
			debugfs_remove(lpfc_debugfs_root); /* lpfc */
			lpfc_debugfs_root = NULL;
		}
	}
#endif
	return;
}