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
|
/*-
* Copyright (c) 1994-1998
* Paul Richards. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer,
* verbatim and that no modifications are made prior to this
* point in the file.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Paul Richards.
* 4. The name Paul Richards may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY PAUL RICHARDS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL PAUL RICHARDS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* 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 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: if_lnc.c,v 1.54 1999/03/17 16:44:52 luigi Exp $
*/
/*
#define DIAGNOSTIC
#define DEBUG
*
* TODO ----
*
* This driver will need bounce buffer support when dma'ing to mbufs above the
* 16Mb mark.
*
* Check all the XXX comments -- some of them are just things I've left
* unfinished rather than "difficult" problems that were hacked around.
*
* Check log settings.
*
* Check how all the arpcom flags get set and used.
*
* Re-inline and re-static all routines after debugging.
*
* Remember to assign iobase in SHMEM probe routines.
*
* Replace all occurences of LANCE-controller-card etc in prints by the name
* strings of the appropriate type -- nifty window dressing
*
* Add DEPCA support -- mostly done.
*
*/
#include "pci.h"
#include "lnc.h"
#if NLNC > 0
#include "bpfilter.h"
#include "opt_inet.h"
/* Some defines that should really be in generic locations */
#define FCS_LEN 4
#define MULTICAST_FILTER_LEN 8
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/conf.h>
#include <sys/sockio.h>
#include <sys/malloc.h>
#include <sys/mbuf.h>
#include <sys/socket.h>
#include <sys/syslog.h>
#include <net/if.h>
#include <net/if_dl.h>
#include <net/if_types.h>
#ifdef INET
#include <netinet/in.h>
#include <netinet/if_ether.h>
#endif
#if NBPFILTER > 0
#include <net/bpf.h>
#endif
#include "opt_bdg.h"
#ifdef BRIDGE
#include <net/bridge.h>
#endif
#ifdef PC98
#include <machine/clock.h>
#endif
#include <machine/md_var.h>
#include <i386/isa/isa_device.h>
#include <i386/isa/if_lnc.h>
struct lnc_softc {
struct arpcom arpcom; /* see ../../net/if_arp.h */
struct nic_info nic; /* NIC specific info */
int nrdre;
struct host_ring_entry *recv_ring; /* start of alloc'd mem */
int recv_next;
int ntdre;
struct host_ring_entry *trans_ring;
int trans_next;
struct init_block *init_block; /* Initialisation block */
int pending_transmits; /* No. of transmit descriptors in use */
int next_to_send;
struct mbuf *mbufs;
int mbuf_count;
int flags;
int rap;
int rdp;
int bdp;
#ifdef DEBUG
int lnc_debug;
#endif
LNCSTATS_STRUCT
};
static struct lnc_softc lnc_softc[NLNC];
static char const * const nic_ident[] = {
"Unknown",
"BICC",
"NE2100",
"DEPCA",
"CNET98S", /* PC-98 */
};
static char const * const ic_ident[] = {
"Unknown",
"LANCE",
"C-LANCE",
"PCnet-ISA",
"PCnet-ISA+",
"PCnet-ISA II",
"PCnet-32 VL-Bus",
"PCnet-PCI",
"PCnet-PCI II",
"PCnet-FAST",
"PCnet-FAST+",
};
static void lnc_setladrf __P((struct lnc_softc *sc));
static void lnc_stop __P((struct lnc_softc *sc));
static void lnc_reset __P((struct lnc_softc *sc));
static void lnc_free_mbufs __P((struct lnc_softc *sc));
static __inline int alloc_mbuf_cluster __P((struct lnc_softc *sc,
struct host_ring_entry *desc));
static __inline struct mbuf *chain_mbufs __P((struct lnc_softc *sc,
int start_of_packet,
int pkt_len));
static __inline struct mbuf *mbuf_packet __P((struct lnc_softc *sc,
int start_of_packet,
int pkt_len));
static __inline void lnc_rint __P((struct lnc_softc *sc));
static __inline void lnc_tint __P((struct lnc_softc *sc));
static int lnc_probe __P((struct isa_device *isa_dev));
#ifdef PC98
static int cnet98s_probe __P((struct lnc_softc *sc, unsigned iobase));
#endif
static int ne2100_probe __P((struct lnc_softc *sc, unsigned iobase));
static int bicc_probe __P((struct lnc_softc *sc, unsigned iobase));
static int dec_macaddr_extract __P((u_char ring[], struct lnc_softc *sc));
static int depca_probe __P((struct lnc_softc *sc, unsigned iobase));
static int lance_probe __P((struct lnc_softc *sc));
static int pcnet_probe __P((struct lnc_softc *sc));
static int lnc_attach_sc __P((struct lnc_softc *sc, int unit));
static int lnc_attach __P((struct isa_device *isa_dev));
static void lnc_init __P((struct lnc_softc *sc));
static ointhand2_t lncintr;
static __inline int mbuf_to_buffer __P((struct mbuf *m, char *buffer));
static __inline struct mbuf *chain_to_cluster __P((struct mbuf *m));
static void lnc_start __P((struct ifnet *ifp));
static int lnc_ioctl __P((struct ifnet *ifp, u_long command, caddr_t data));
static void lnc_watchdog __P((struct ifnet *ifp));
#ifdef DEBUG
void lnc_dump_state __P((struct lnc_softc *sc));
void mbuf_dump_chain __P((struct mbuf *m));
#endif
#if NPCI > 0
void *lnc_attach_ne2100_pci __P((int unit, unsigned iobase));
#endif
void lncintr_sc __P((struct lnc_softc *sc));
struct isa_driver lncdriver = {lnc_probe, lnc_attach, "lnc"};
static __inline void
write_csr(struct lnc_softc *sc, u_short port, u_short val)
{
outw(sc->rap, port);
outw(sc->rdp, val);
}
static __inline u_short
read_csr(struct lnc_softc *sc, u_short port)
{
outw(sc->rap, port);
return (inw(sc->rdp));
}
static __inline void
write_bcr(struct lnc_softc *sc, u_short port, u_short val)
{
outw(sc->rap, port);
outw(sc->bdp, val);
}
static __inline u_short
read_bcr(struct lnc_softc *sc, u_short port)
{
outw(sc->rap, port);
return (inw(sc->bdp));
}
static __inline u_long
ether_crc(const u_char *ether_addr)
{
#define POLYNOMIAL 0xEDB88320UL
u_char i, j, addr;
u_int crc = 0xFFFFFFFFUL;
for (i = 0; i < ETHER_ADDR_LEN; i++) {
addr = *ether_addr++;
for (j = 0; j < MULTICAST_FILTER_LEN; j++) {
crc = (crc >> 1) ^ (((crc ^ addr) & 1) ? POLYNOMIAL : 0);
addr >>= 1;
}
}
return crc;
#undef POLYNOMIAL
}
/*
* Set up the logical address filter for multicast packets
*/
static __inline void
lnc_setladrf(struct lnc_softc *sc)
{
struct ifnet *ifp = &sc->arpcom.ac_if;
struct ifmultiaddr *ifma;
u_long index;
int i;
if (sc->flags & IFF_ALLMULTI) {
for (i=0; i < MULTICAST_FILTER_LEN; i++)
sc->init_block->ladrf[i] = 0xFF;
return;
}
/*
* For each multicast address, calculate a crc for that address and
* then use the high order 6 bits of the crc as a hash code where
* bits 3-5 select the byte of the address filter and bits 0-2 select
* the bit within that byte.
*/
bzero(sc->init_block->ladrf, MULTICAST_FILTER_LEN);
for (ifma = ifp->if_multiaddrs.lh_first; ifma;
ifma = ifma->ifma_link.le_next) {
if (ifma->ifma_addr->sa_family != AF_LINK)
continue;
index = ether_crc(LLADDR((struct sockaddr_dl *)ifma->ifma_addr))
>> 26;
sc->init_block->ladrf[index >> 3] |= 1 << (index & 7);
}
}
static void
lnc_stop(struct lnc_softc *sc)
{
write_csr(sc, CSR0, STOP);
}
static void
lnc_reset(struct lnc_softc *sc)
{
lnc_init(sc);
}
static void
lnc_free_mbufs(struct lnc_softc *sc)
{
int i;
/*
* We rely on other routines to keep the buff.mbuf field valid. If
* it's not NULL then we assume it points to an allocated mbuf.
*/
for (i = 0; i < NDESC(sc->nrdre); i++)
if ((sc->recv_ring + i)->buff.mbuf)
m_free((sc->recv_ring + i)->buff.mbuf);
for (i = 0; i < NDESC(sc->ntdre); i++)
if ((sc->trans_ring + i)->buff.mbuf)
m_free((sc->trans_ring + i)->buff.mbuf);
if (sc->mbuf_count)
m_freem(sc->mbufs);
}
static __inline int
alloc_mbuf_cluster(struct lnc_softc *sc, struct host_ring_entry *desc)
{
register struct mds *md = desc->md;
struct mbuf *m=0;
int addr;
/* Try and get cluster off local cache */
if (sc->mbuf_count) {
sc->mbuf_count--;
m = sc->mbufs;
sc->mbufs = m->m_next;
/* XXX m->m_data = m->m_ext.ext_buf;*/
} else {
MGET(m, M_DONTWAIT, MT_DATA);
if (!m)
return(1);
MCLGET(m, M_DONTWAIT);
if (!m->m_ext.ext_buf) {
m_free(m);
return(1);
}
}
desc->buff.mbuf = m;
addr = kvtop(m->m_data);
md->md0 = addr;
md->md1= ((addr >> 16) & 0xff) | OWN;
md->md2 = -(short)(MCLBYTES - sizeof(struct pkthdr));
md->md3 = 0;
return(0);
}
static __inline struct mbuf *
chain_mbufs(struct lnc_softc *sc, int start_of_packet, int pkt_len)
{
struct mbuf *head, *m;
struct host_ring_entry *desc;
/*
* Turn head into a pkthdr mbuf --
* assumes a pkthdr type mbuf was
* allocated to the descriptor
* originally.
*/
desc = sc->recv_ring + start_of_packet;
head = desc->buff.mbuf;
head->m_flags |= M_PKTHDR;
m = head;
do {
m = desc->buff.mbuf;
m->m_len = min((MCLBYTES - sizeof(struct pkthdr)), pkt_len);
pkt_len -= m->m_len;
if (alloc_mbuf_cluster(sc, desc))
return((struct mbuf *)NULL);
INC_MD_PTR(start_of_packet, sc->nrdre)
desc = sc->recv_ring + start_of_packet;
m->m_next = desc->buff.mbuf;
} while (start_of_packet != sc->recv_next);
m->m_next = 0;
return(head);
}
static __inline struct mbuf *
mbuf_packet(struct lnc_softc *sc, int start_of_packet, int pkt_len)
{
struct host_ring_entry *start;
struct mbuf *head,*m,*m_prev;
char *data,*mbuf_data;
short blen;
int amount;
/* Get a pkthdr mbuf for the start of packet */
MGETHDR(head, M_DONTWAIT, MT_DATA);
if (!head) {
LNCSTATS(drop_packet)
return(0);
}
m = head;
m->m_len = 0;
start = sc->recv_ring + start_of_packet;
/*blen = -(start->md->md2);*/
blen = RECVBUFSIZE; /* XXX More PCnet-32 crap */
data = start->buff.data;
mbuf_data = m->m_data;
while (start_of_packet != sc->recv_next) {
/*
* If the data left fits in a single buffer then set
* blen to the size of the data left.
*/
if (pkt_len < blen)
blen = pkt_len;
/*
* amount is least of data in current ring buffer and
* amount of space left in current mbuf.
*/
amount = min(blen, M_TRAILINGSPACE(m));
if (amount == 0) {
/* mbuf must be empty */
m_prev = m;
MGET(m, M_DONTWAIT, MT_DATA);
if (!m) {
m_freem(head);
return(0);
}
if (pkt_len >= MINCLSIZE)
MCLGET(m, M_DONTWAIT);
m->m_len = 0;
m_prev->m_next = m;
amount = min(blen, M_TRAILINGSPACE(m));
mbuf_data = m->m_data;
}
bcopy(data, mbuf_data, amount);
blen -= amount;
pkt_len -= amount;
m->m_len += amount;
data += amount;
mbuf_data += amount;
if (blen == 0) {
start->md->md1 &= HADR;
start->md->md1 |= OWN;
start->md->md2 = -RECVBUFSIZE; /* XXX - shouldn't be necessary */
INC_MD_PTR(start_of_packet, sc->nrdre)
start = sc->recv_ring + start_of_packet;
data = start->buff.data;
/*blen = -(start->md->md2);*/
blen = RECVBUFSIZE; /* XXX More PCnet-32 crap */
}
}
return(head);
}
static __inline void
lnc_rint(struct lnc_softc *sc)
{
struct host_ring_entry *next, *start;
int start_of_packet;
struct mbuf *head;
struct ether_header *eh;
int lookahead;
int flags;
int pkt_len;
/*
* The LANCE will issue a RINT interrupt when the ownership of the
* last buffer of a receive packet has been relinquished by the LANCE.
* Therefore, it can be assumed that a complete packet can be found
* before hitting buffers that are still owned by the LANCE, if not
* then there is a bug in the driver that is causing the descriptors
* to get out of sync.
*/
#ifdef DIAGNOSTIC
if ((sc->recv_ring + sc->recv_next)->md->md1 & OWN) {
int unit = sc->arpcom.ac_if.if_unit;
log(LOG_ERR, "lnc%d: Receive interrupt with buffer still owned by controller -- Resetting\n", unit);
lnc_reset(sc);
return;
}
if (!((sc->recv_ring + sc->recv_next)->md->md1 & STP)) {
int unit = sc->arpcom.ac_if.if_unit;
log(LOG_ERR, "lnc%d: Receive interrupt but not start of packet -- Resetting\n", unit);
lnc_reset(sc);
return;
}
#endif
lookahead = 0;
next = sc->recv_ring + sc->recv_next;
while ((flags = next->md->md1) & STP) {
/* Make a note of the start of the packet */
start_of_packet = sc->recv_next;
/*
* Find the end of the packet. Even if not data chaining,
* jabber packets can overrun into a second descriptor.
* If there is no error, then the ENP flag is set in the last
* descriptor of the packet. If there is an error then the ERR
* flag will be set in the descriptor where the error occured.
* Therefore, to find the last buffer of a packet we search for
* either ERR or ENP.
*/
if (!(flags & (ENP | MDERR))) {
do {
INC_MD_PTR(sc->recv_next, sc->nrdre)
next = sc->recv_ring + sc->recv_next;
flags = next->md->md1;
} while (!(flags & (STP | OWN | ENP | MDERR)));
if (flags & STP) {
int unit = sc->arpcom.ac_if.if_unit;
log(LOG_ERR, "lnc%d: Start of packet found before end of previous in receive ring -- Resetting\n", unit);
lnc_reset(sc);
return;
}
if (flags & OWN) {
if (lookahead) {
/*
* Looked ahead into a packet still
* being received
*/
sc->recv_next = start_of_packet;
break;
} else {
int unit = sc->arpcom.ac_if.if_unit;
log(LOG_ERR, "lnc%d: End of received packet not found-- Resetting\n", unit);
lnc_reset(sc);
return;
}
}
}
pkt_len = (next->md->md3 & MCNT) - FCS_LEN;
/* Move pointer onto start of next packet */
INC_MD_PTR(sc->recv_next, sc->nrdre)
next = sc->recv_ring + sc->recv_next;
if (flags & MDERR) {
int unit = sc->arpcom.ac_if.if_unit;
if (flags & RBUFF) {
LNCSTATS(rbuff)
log(LOG_ERR, "lnc%d: Receive buffer error\n", unit);
}
if (flags & OFLO) {
/* OFLO only valid if ENP is not set */
if (!(flags & ENP)) {
LNCSTATS(oflo)
log(LOG_ERR, "lnc%d: Receive overflow error \n", unit);
}
} else if (flags & ENP) {
if ((sc->arpcom.ac_if.if_flags & IFF_PROMISC)==0) {
/*
* FRAM and CRC are valid only if ENP
* is set and OFLO is not.
*/
if (flags & FRAM) {
LNCSTATS(fram)
log(LOG_ERR, "lnc%d: Framing error\n", unit);
/*
* FRAM is only set if there's a CRC
* error so avoid multiple messages
*/
} else if (flags & CRC) {
LNCSTATS(crc)
log(LOG_ERR, "lnc%d: Receive CRC error\n", unit);
}
}
}
/* Drop packet */
LNCSTATS(rerr)
sc->arpcom.ac_if.if_ierrors++;
while (start_of_packet != sc->recv_next) {
start = sc->recv_ring + start_of_packet;
start->md->md2 = -RECVBUFSIZE; /* XXX - shouldn't be necessary */
start->md->md1 &= HADR;
start->md->md1 |= OWN;
INC_MD_PTR(start_of_packet, sc->nrdre)
}
} else { /* Valid packet */
sc->arpcom.ac_if.if_ipackets++;
if (sc->nic.mem_mode == DMA_MBUF)
head = chain_mbufs(sc, start_of_packet, pkt_len);
else
head = mbuf_packet(sc, start_of_packet, pkt_len);
if (head) {
/*
* First mbuf in packet holds the
* ethernet and packet headers
*/
head->m_pkthdr.rcvif = &sc->arpcom.ac_if;
head->m_pkthdr.len = pkt_len ;
/*
* BPF expects the ether header to be in the first
* mbuf of the chain so point eh at the right place
* but don't increment the mbuf pointers before
* the bpf tap.
*/
eh = (struct ether_header *) head->m_data;
#if NBPFILTER > 0
if (sc->arpcom.ac_if.if_bpf)
bpf_mtap(&sc->arpcom.ac_if, head);
#endif
#ifdef BRIDGE
if (do_bridge) {
struct ifnet *bdg_ifp ;
bdg_ifp = bridge_in(head);
if (bdg_ifp == BDG_DROP)
m_freem(head);
else {
if (bdg_ifp != BDG_LOCAL)
bdg_forward(&head, bdg_ifp);
if ( bdg_ifp == BDG_LOCAL ||
bdg_ifp == BDG_BCAST ||
bdg_ifp == BDG_MCAST )
goto getit;
else if (head)
m_freem(head);
}
} else
#endif
/* Check this packet is really for us */
if ((sc->arpcom.ac_if.if_flags & IFF_PROMISC) &&
!(eh->ether_dhost[0] & 1) && /* Broadcast and multicast */
(bcmp(eh->ether_dhost, sc->arpcom.ac_enaddr,
sizeof(eh->ether_dhost))))
m_freem(head);
else
{
getit:
/* Skip over the ether header */
head->m_data += sizeof *eh;
head->m_len -= sizeof *eh;
head->m_pkthdr.len -= sizeof *eh;
ether_input(&sc->arpcom.ac_if, eh, head);
}
} else {
int unit = sc->arpcom.ac_if.if_unit;
log(LOG_ERR,"lnc%d: Packet dropped, no mbufs\n",unit);
LNCSTATS(drop_packet)
}
}
lookahead++;
}
/*
* At this point all completely received packets have been processed
* so clear RINT since any packets that have arrived while we were in
* here have been dealt with.
*/
outw(sc->rdp, RINT | INEA);
}
static __inline void
lnc_tint(struct lnc_softc *sc)
{
struct host_ring_entry *next, *start;
int start_of_packet;
int lookahead;
/*
* If the driver is reset in this routine then we return immediately to
* the interrupt driver routine. Any interrupts that have occured
* since the reset will be dealt with there. sc->trans_next
* should point to the start of the first packet that was awaiting
* transmission after the last transmit interrupt was dealt with. The
* LANCE should have relinquished ownership of that descriptor before
* the interrupt. Therefore, sc->trans_next should point to a
* descriptor with STP set and OWN cleared. If not then the driver's
* pointers are out of sync with the LANCE, which signifies a bug in
* the driver. Therefore, the following two checks are really
* diagnostic, since if the driver is working correctly they should
* never happen.
*/
#ifdef DIAGNOSTIC
if ((sc->trans_ring + sc->trans_next)->md->md1 & OWN) {
int unit = sc->arpcom.ac_if.if_unit;
log(LOG_ERR, "lnc%d: Transmit interrupt with buffer still owned by controller -- Resetting\n", unit);
lnc_reset(sc);
return;
}
#endif
/*
* The LANCE will write the status information for the packet it just
* tried to transmit in one of two places. If the packet was
* transmitted successfully then the status will be written into the
* last descriptor of the packet. If the transmit failed then the
* status will be written into the descriptor that was being accessed
* when the error occured and all subsequent descriptors in that
* packet will have been relinquished by the LANCE.
*
* At this point we know that sc->trans_next points to the start
* of a packet that the LANCE has just finished trying to transmit.
* We now search for a buffer with either ENP or ERR set.
*/
lookahead = 0;
do {
start_of_packet = sc->trans_next;
next = sc->trans_ring + sc->trans_next;
#ifdef DIAGNOSTIC
if (!(next->md->md1 & STP)) {
int unit = sc->arpcom.ac_if.if_unit;
log(LOG_ERR, "lnc%d: Transmit interrupt but not start of packet -- Resetting\n", unit);
lnc_reset(sc);
return;
}
#endif
/*
* Find end of packet.
*/
if (!(next->md->md1 & (ENP | MDERR))) {
do {
INC_MD_PTR(sc->trans_next, sc->ntdre)
next = sc->trans_ring + sc->trans_next;
} while (!(next->md->md1 & (STP | OWN | ENP | MDERR)));
if (next->md->md1 & STP) {
int unit = sc->arpcom.ac_if.if_unit;
log(LOG_ERR, "lnc%d: Start of packet found before end of previous in transmit ring -- Resetting\n", unit);
lnc_reset(sc);
return;
}
if (next->md->md1 & OWN) {
if (lookahead) {
/*
* Looked ahead into a packet still
* being transmitted
*/
sc->trans_next = start_of_packet;
break;
} else {
int unit = sc->arpcom.ac_if.if_unit;
log(LOG_ERR, "lnc%d: End of transmitted packet not found -- Resetting\n", unit);
lnc_reset(sc);
return;
}
}
}
/*
* Check for ERR first since other flags are irrelevant if an
* error occurred.
*/
if (next->md->md1 & MDERR) {
int unit = sc->arpcom.ac_if.if_unit;
LNCSTATS(terr)
sc->arpcom.ac_if.if_oerrors++;
if (next->md->md3 & LCOL) {
LNCSTATS(lcol)
log(LOG_ERR, "lnc%d: Transmit late collision -- Net error?\n", unit);
sc->arpcom.ac_if.if_collisions++;
/*
* Clear TBUFF since it's not valid when LCOL
* set
*/
next->md->md3 &= ~TBUFF;
}
if (next->md->md3 & LCAR) {
LNCSTATS(lcar)
log(LOG_ERR, "lnc%d: Loss of carrier during transmit -- Net error?\n", unit);
}
if (next->md->md3 & RTRY) {
LNCSTATS(rtry)
log(LOG_ERR, "lnc%d: Transmit of packet failed after 16 attempts -- TDR = %d\n", unit, ((sc->trans_ring + sc->trans_next)->md->md3 & TDR));
sc->arpcom.ac_if.if_collisions += 16;
/*
* Clear TBUFF since it's not valid when RTRY
* set
*/
next->md->md3 &= ~TBUFF;
}
/*
* TBUFF is only valid if neither LCOL nor RTRY are set.
* We need to check UFLO after LCOL and RTRY so that we
* know whether or not TBUFF is valid. If either are
* set then TBUFF will have been cleared above. A
* UFLO error will turn off the transmitter so we
* have to reset.
*
*/
if (next->md->md3 & UFLO) {
LNCSTATS(uflo)
/*
* If an UFLO has occured it's possibly due
* to a TBUFF error
*/
if (next->md->md3 & TBUFF) {
LNCSTATS(tbuff)
log(LOG_ERR, "lnc%d: Transmit buffer error -- Resetting\n", unit);
} else
log(LOG_ERR, "lnc%d: Transmit underflow error -- Resetting\n", unit);
lnc_reset(sc);
return;
}
do {
INC_MD_PTR(sc->trans_next, sc->ntdre)
next = sc->trans_ring + sc->trans_next;
} while (!(next->md->md1 & STP) && (sc->trans_next != sc->next_to_send));
} else {
/*
* Since we check for ERR first then if we get here
* the packet was transmitted correctly. There may
* still have been non-fatal errors though.
* Don't bother checking for DEF, waste of time.
*/
sc->arpcom.ac_if.if_opackets++;
if (next->md->md1 & MORE) {
LNCSTATS(more)
sc->arpcom.ac_if.if_collisions += 2;
}
/*
* ONE is invalid if LCOL is set. If LCOL was set then
* ERR would have also been set and we would have
* returned from lnc_tint above. Therefore we can
* assume if we arrive here that ONE is valid.
*
*/
if (next->md->md1 & ONE) {
LNCSTATS(one)
sc->arpcom.ac_if.if_collisions++;
}
INC_MD_PTR(sc->trans_next, sc->ntdre)
next = sc->trans_ring + sc->trans_next;
}
/*
* Clear descriptors and free any mbufs.
*/
do {
start = sc->trans_ring + start_of_packet;
start->md->md1 &= HADR;
if (sc->nic.mem_mode == DMA_MBUF) {
/* Cache clusters on a local queue */
if ((start->buff.mbuf->m_flags & M_EXT) && (sc->mbuf_count < MBUF_CACHE_LIMIT)) {
if (sc->mbuf_count) {
start->buff.mbuf->m_next = sc->mbufs;
sc->mbufs = start->buff.mbuf;
} else
sc->mbufs = start->buff.mbuf;
sc->mbuf_count++;
start->buff.mbuf = 0;
} else {
struct mbuf *junk;
MFREE(start->buff.mbuf, junk);
start->buff.mbuf = 0;
}
}
sc->pending_transmits--;
INC_MD_PTR(start_of_packet, sc->ntdre)
}while (start_of_packet != sc->trans_next);
/*
* There's now at least one free descriptor
* in the ring so indicate that we can accept
* more packets again.
*/
sc->arpcom.ac_if.if_flags &= ~IFF_OACTIVE;
lookahead++;
} while (sc->pending_transmits && !(next->md->md1 & OWN));
/*
* Clear TINT since we've dealt with all
* the completed transmissions.
*/
outw(sc->rdp, TINT | INEA);
/* XXX only while doing if_is comparisons */
if (!(sc->arpcom.ac_if.if_flags & IFF_OACTIVE))
lnc_start(&sc->arpcom.ac_if);
}
static int
lnc_probe(struct isa_device * isa_dev)
{
int nports;
int unit = isa_dev->id_unit;
struct lnc_softc *sc = &lnc_softc[unit];
unsigned iobase = isa_dev->id_iobase;
#ifdef DIAGNOSTIC
int vsw;
vsw = inw(isa_dev->id_iobase + PCNET_VSW);
printf("Vendor Specific Word = %x\n", vsw);
#endif
nports = bicc_probe(sc, iobase);
if (nports == 0)
nports = ne2100_probe(sc, iobase);
if (nports == 0)
nports = depca_probe(sc, iobase);
#ifdef PC98
if (nports == 0)
nports = cnet98s_probe(sc, iobase);
#endif
return (nports);
}
#ifdef PC98
/* ISA Bus Configuration Registers */
/* XXX - Should be in ic/Am7990.h */
#define MSRDA 0x0000 /* ISACSR0: Master Mode Read Activity */
#define MSWRA 0x0001 /* ISACSR1: Master Mode Write Activity */
#define MC 0x0002 /* ISACSR2: Miscellaneous Configuration */
#define LED1 0x0005 /* ISACSR5: LED1 Status */
#define LED2 0x0006 /* ISACSR6: LED2 Status */
#define LED3 0x0007 /* ISACSR7: LED3 Status */
#define LED_PSE 0x0080 /* Pulse Stretcher */
#define LED_XMTE 0x0010 /* Transmit Status */
#define LED_RVPOLE 0x0008 /* Receive Polarity */
#define LED_RCVE 0x0004 /* Receive Status */
#define LED_JABE 0x0002 /* Jabber */
#define LED_COLE 0x0001 /* Collision */
static int
cnet98s_probe(struct lnc_softc *sc, unsigned iobase)
{
int i;
ushort tmp;
sc->rap = iobase + CNET98S_RAP;
sc->rdp = iobase + CNET98S_RDP;
/* Reset */
tmp = inw(iobase + CNET98S_RESET);
outw(iobase + CNET98S_RESET, tmp);
DELAY(500);
sc->nic.ic = pcnet_probe(sc);
if ((sc->nic.ic == UNKNOWN) || (sc->nic.ic > PCnet_32)) {
return (0);
}
sc->nic.ident = CNET98S;
sc->nic.mem_mode = DMA_FIXED;
/* XXX - For now just use the defines */
sc->nrdre = NRDRE;
sc->ntdre = NTDRE;
/* Extract MAC address from PROM */
for (i = 0; i < ETHER_ADDR_LEN; i++) {
sc->arpcom.ac_enaddr[i] = inb(iobase + (i * 2));
}
/*
* ISA Configuration
*
* XXX - Following parameters are Contec C-NET(98)S only.
* So, check the Ethernet address here.
*
* Contec uses 00 80 4c ?? ?? ??
*/
if (sc->arpcom.ac_enaddr[0] == (u_char)0x00
&& sc->arpcom.ac_enaddr[1] == (u_char)0x80
&& sc->arpcom.ac_enaddr[2] == (u_char)0x4c) {
outw(sc->rap, MSRDA);
outw(iobase + CNET98S_IDP, 0x0006);
outw(sc->rap, MSWRA);
outw(iobase + CNET98S_IDP, 0x0006);
#ifdef DIAGNOSTIC
outw(sc->rap, MC);
printf("ISACSR2 = %x\n", inw(iobase + CNET98S_IDP));
#endif
outw(sc->rap, LED1);
outw(iobase + CNET98S_IDP, LED_PSE | LED_XMTE);
outw(sc->rap, LED2);
outw(iobase + CNET98S_IDP, LED_PSE | LED_RCVE);
outw(sc->rap, LED3);
outw(iobase + CNET98S_IDP, LED_PSE | LED_COLE);
}
return (CNET98S_IOSIZE);
}
#endif
static int
ne2100_probe(struct lnc_softc *sc, unsigned iobase)
{
int i;
sc->rap = iobase + PCNET_RAP;
sc->rdp = iobase + PCNET_RDP;
sc->nic.ic = pcnet_probe(sc);
if ((sc->nic.ic > 0) && (sc->nic.ic < PCnet_PCI)) {
sc->nic.ident = NE2100;
sc->nic.mem_mode = DMA_FIXED;
/* XXX - For now just use the defines */
sc->nrdre = NRDRE;
sc->ntdre = NTDRE;
/* Extract MAC address from PROM */
for (i = 0; i < ETHER_ADDR_LEN; i++)
sc->arpcom.ac_enaddr[i] = inb(iobase + i);
return (NE2100_IOSIZE);
} else {
return (0);
}
}
static int
bicc_probe(struct lnc_softc *sc, unsigned iobase)
{
int i;
/*
* There isn't any way to determine if a NIC is a BICC. Basically, if
* the lance probe succeeds using the i/o addresses of the BICC then
* we assume it's a BICC.
*
*/
sc->rap = iobase + BICC_RAP;
sc->rdp = iobase + BICC_RDP;
/* I think all these cards us the Am7990 */
if ((sc->nic.ic = lance_probe(sc))) {
sc->nic.ident = BICC;
sc->nic.mem_mode = DMA_FIXED;
/* XXX - For now just use the defines */
sc->nrdre = NRDRE;
sc->ntdre = NTDRE;
/* Extract MAC address from PROM */
for (i = 0; i < ETHER_ADDR_LEN; i++)
sc->arpcom.ac_enaddr[i] = inb(iobase + (i * 2));
return (BICC_IOSIZE);
} else {
return (0);
}
}
/*
* I don't have data sheets for the dec cards but it looks like the mac
* address is contained in a 32 byte ring. Each time you read from the port
* you get the next byte in the ring. The mac address is stored after a
* signature so keep searching for the signature first.
*/
static int
dec_macaddr_extract(u_char ring[], struct lnc_softc * sc)
{
const unsigned char signature[] = {0xff, 0x00, 0x55, 0xaa, 0xff, 0x00, 0x55, 0xaa};
int i, j, rindex;
for (i = 0; i < sizeof ring; i++) {
for (j = 0, rindex = i; j < sizeof signature; j++) {
if (ring[rindex] != signature[j])
break;
if (++rindex > sizeof ring)
rindex = 0;
}
if (j == sizeof signature) {
for (j = 0, rindex = i; j < ETHER_ADDR_LEN; j++) {
sc->arpcom.ac_enaddr[j] = ring[rindex];
if (++rindex > sizeof ring)
rindex = 0;
}
return (1);
}
}
return (0);
}
static int
depca_probe(struct lnc_softc *sc, unsigned iobase)
{
int i;
unsigned char maddr_ring[DEPCA_ADDR_ROM_SIZE];
sc->rap = iobase + DEPCA_RAP;
sc->rdp = iobase + DEPCA_RDP;
if ((sc->nic.ic = lance_probe(sc))) {
sc->nic.ident = DEPCA;
sc->nic.mem_mode = SHMEM;
/* Extract MAC address from PROM */
for (i = 0; i < DEPCA_ADDR_ROM_SIZE; i++)
maddr_ring[i] = inb(iobase + DEPCA_ADP);
if (dec_macaddr_extract(maddr_ring, sc)) {
return (DEPCA_IOSIZE);
}
}
return (0);
}
static int
lance_probe(struct lnc_softc *sc)
{
write_csr(sc, CSR0, STOP);
if ((inw(sc->rdp) & STOP) && !(read_csr(sc, CSR3))) {
/*
* Check to see if it's a C-LANCE. For the LANCE the INEA bit
* cannot be set while the STOP bit is. This restriction is
* removed for the C-LANCE.
*/
write_csr(sc, CSR0, INEA);
if (read_csr(sc, CSR0) & INEA)
return (C_LANCE);
else
return (LANCE);
} else
return (UNKNOWN);
}
static int
pcnet_probe(struct lnc_softc *sc)
{
u_long chip_id;
int type;
/*
* The PCnet family don't reset the RAP register on reset so we'll
* have to write during the probe :-) It does have an ID register
* though so the probe is just a matter of reading it.
*/
if ((type = lance_probe(sc))) {
chip_id = read_csr(sc, CSR89);
chip_id <<= 16;
chip_id |= read_csr(sc, CSR88);
if (chip_id & AMD_MASK) {
chip_id >>= 12;
switch (chip_id & PART_MASK) {
case Am79C960:
return (PCnet_ISA);
case Am79C961:
return (PCnet_ISAplus);
case Am79C961A:
return (PCnet_ISA_II);
case Am79C965:
return (PCnet_32);
case Am79C970:
return (PCnet_PCI);
case Am79C970A:
return (PCnet_PCI_II);
case Am79C971:
return (PCnet_FAST);
case Am79C972:
return (PCnet_FASTplus);
default:
break;
}
}
}
return (type);
}
static int
lnc_attach_sc(struct lnc_softc *sc, int unit)
{
int lnc_mem_size;
/*
* Allocate memory for use by the controller.
*
* XXX -- the Am7990 and Am79C960 only have 24 address lines and so can
* only access the lower 16Mb of physical memory. For the moment we
* assume that malloc will allocate memory within the lower 16Mb
* range. This is not a very valid assumption but there's nothing
* that can be done about it yet. For shared memory NICs this isn't
* relevant.
*
*/
lnc_mem_size = ((NDESC(sc->nrdre) + NDESC(sc->ntdre)) *
sizeof(struct host_ring_entry));
if (sc->nic.mem_mode != SHMEM)
lnc_mem_size += sizeof(struct init_block) + (sizeof(struct mds) *
(NDESC(sc->nrdre) + NDESC(sc->ntdre))) +
MEM_SLEW;
/* If using DMA to fixed host buffers then allocate memory for them */
if (sc->nic.mem_mode == DMA_FIXED)
lnc_mem_size += (NDESC(sc->nrdre) * RECVBUFSIZE) + (NDESC(sc->ntdre) * TRANSBUFSIZE);
if (sc->nic.mem_mode != SHMEM) {
if (sc->nic.ic < PCnet_32) {
/* ISA based cards */
sc->recv_ring = contigmalloc(lnc_mem_size, M_DEVBUF, M_NOWAIT,
0ul, 0xfffffful, 4ul, 0x1000000);
} else {
/* Non-ISA based cards, 32 bit capable */
#ifdef notyet
/*
* For the 32 bit driver we're not fussed where we DMA to
* though it'll still need to be contiguous
*/
sc->recv_ring = malloc(lnc_mem_size, M_DEVBUF, M_NOWAIT);
#else
/*
* For now it still needs to be below 16MB because the
* descriptor's can only hold 16 bit addresses.
*/
sc->recv_ring = contigmalloc(lnc_mem_size, M_DEVBUF, M_NOWAIT,
0ul, 0xfffffful, 4ul, 0x1000000);
#endif
}
}
if (!sc->recv_ring) {
log(LOG_ERR, "lnc%d: Couldn't allocate memory for NIC\n", unit);
return (0); /* XXX -- attach failed -- not tested in
* calling routines */
}
/* Set default mode */
sc->nic.mode = NORMAL;
/* Fill in arpcom structure entries */
sc->arpcom.ac_if.if_softc = sc;
sc->arpcom.ac_if.if_name = lncdriver.name;
sc->arpcom.ac_if.if_unit = unit;
sc->arpcom.ac_if.if_mtu = ETHERMTU;
sc->arpcom.ac_if.if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
sc->arpcom.ac_if.if_timer = 0;
sc->arpcom.ac_if.if_output = ether_output;
sc->arpcom.ac_if.if_start = lnc_start;
sc->arpcom.ac_if.if_ioctl = lnc_ioctl;
sc->arpcom.ac_if.if_watchdog = lnc_watchdog;
sc->arpcom.ac_if.if_type = IFT_ETHER;
sc->arpcom.ac_if.if_addrlen = ETHER_ADDR_LEN;
sc->arpcom.ac_if.if_hdrlen = ETHER_HDR_LEN;
/*
* XXX -- should check return status of if_attach
*/
if_attach(&sc->arpcom.ac_if);
ether_ifattach(&sc->arpcom.ac_if);
printf("lnc%d: ", unit);
if (sc->nic.ic == LANCE || sc->nic.ic == C_LANCE)
printf("%s (%s)",
nic_ident[sc->nic.ident], ic_ident[sc->nic.ic]);
else
printf("%s", ic_ident[sc->nic.ic]);
printf(" address %6D\n", sc->arpcom.ac_enaddr, ":");
#if NBPFILTER > 0
bpfattach(&sc->arpcom.ac_if, DLT_EN10MB, sizeof(struct ether_header));
#endif
return (1);
}
static int
lnc_attach(struct isa_device * isa_dev)
{
int unit = isa_dev->id_unit;
struct lnc_softc *sc = &lnc_softc[unit];
int result;
isa_dev->id_ointr = lncintr;
result = lnc_attach_sc (sc, unit);
if (result == 0)
return (0);
#ifndef PC98
/*
* XXX - is it safe to call isa_dmacascade() after if_attach()
* and ether_ifattach() have been called in lnc_attach() ???
*/
if ((sc->nic.mem_mode != SHMEM) &&
(sc->nic.ic < PCnet_32))
isa_dmacascade(isa_dev->id_drq);
#endif
return result;
}
#if NPCI > 0
void *
lnc_attach_ne2100_pci(int unit, unsigned iobase)
{
int i;
struct lnc_softc *sc = malloc(sizeof *sc, M_DEVBUF, M_NOWAIT);
if (sc) {
bzero (sc, sizeof *sc);
sc->rap = iobase + PCNET_RAP;
sc->rdp = iobase + PCNET_RDP;
sc->bdp = iobase + PCNET_BDP;
sc->nic.ic = pcnet_probe(sc);
if (sc->nic.ic >= PCnet_32) {
sc->nic.ident = NE2100;
sc->nic.mem_mode = DMA_FIXED;
/* XXX - For now just use the defines */
sc->nrdre = NRDRE;
sc->ntdre = NTDRE;
/* Extract MAC address from PROM */
for (i = 0; i < ETHER_ADDR_LEN; i++)
sc->arpcom.ac_enaddr[i] = inb(iobase + i);
if (lnc_attach_sc(sc, unit) == 0) {
free(sc, M_DEVBUF);
sc = NULL;
}
}
else {
free(sc, M_DEVBUF);
sc = NULL;
}
}
return sc;
}
#endif
static void
lnc_init(struct lnc_softc *sc)
{
int s, i;
char *lnc_mem;
/* Check that interface has valid address */
if (TAILQ_EMPTY(&sc->arpcom.ac_if.if_addrhead)) /* XXX unlikely */
return;
/* Shut down interface */
s = splimp();
lnc_stop(sc);
sc->arpcom.ac_if.if_flags |= IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; /* XXX??? */
/*
* This sets up the memory area for the controller. Memory is set up for
* the initialisation block (12 words of contiguous memory starting
* on a word boundary),the transmit and receive ring structures (each
* entry is 4 words long and must start on a quadword boundary) and
* the data buffers.
*
* The alignment tests are particularly paranoid.
*/
sc->recv_next = 0;
sc->trans_ring = sc->recv_ring + NDESC(sc->nrdre);
sc->trans_next = 0;
if (sc->nic.mem_mode == SHMEM)
lnc_mem = (char *) sc->nic.iobase;
else
lnc_mem = (char *) (sc->trans_ring + NDESC(sc->ntdre));
lnc_mem = (char *)(((int)lnc_mem + 1) & ~1);
sc->init_block = (struct init_block *) ((int) lnc_mem & ~1);
lnc_mem = (char *) (sc->init_block + 1);
lnc_mem = (char *)(((int)lnc_mem + 7) & ~7);
/* Initialise pointers to descriptor entries */
for (i = 0; i < NDESC(sc->nrdre); i++) {
(sc->recv_ring + i)->md = (struct mds *) lnc_mem;
lnc_mem += sizeof(struct mds);
}
for (i = 0; i < NDESC(sc->ntdre); i++) {
(sc->trans_ring + i)->md = (struct mds *) lnc_mem;
lnc_mem += sizeof(struct mds);
}
/* Initialise the remaining ring entries */
if (sc->nic.mem_mode == DMA_MBUF) {
sc->mbufs = 0;
sc->mbuf_count = 0;
/* Free previously allocated mbufs */
if (sc->flags & LNC_INITIALISED)
lnc_free_mbufs(sc);
for (i = 0; i < NDESC(sc->nrdre); i++) {
if (alloc_mbuf_cluster(sc, sc->recv_ring+i)) {
log(LOG_ERR, "Initialisation failed -- no mbufs\n");
splx(s);
return;
}
}
for (i = 0; i < NDESC(sc->ntdre); i++) {
(sc->trans_ring + i)->buff.mbuf = 0;
(sc->trans_ring + i)->md->md0 = 0;
(sc->trans_ring + i)->md->md1 = 0;
(sc->trans_ring + i)->md->md2 = 0;
(sc->trans_ring + i)->md->md3 = 0;
}
} else {
for (i = 0; i < NDESC(sc->nrdre); i++) {
(sc->recv_ring + i)->md->md0 = kvtop(lnc_mem);
(sc->recv_ring + i)->md->md1 = ((kvtop(lnc_mem) >> 16) & 0xff) | OWN;
(sc->recv_ring + i)->md->md2 = -RECVBUFSIZE;
(sc->recv_ring + i)->md->md3 = 0;
(sc->recv_ring + i)->buff.data = lnc_mem;
lnc_mem += RECVBUFSIZE;
}
for (i = 0; i < NDESC(sc->ntdre); i++) {
(sc->trans_ring + i)->md->md0 = kvtop(lnc_mem);
(sc->trans_ring + i)->md->md1 = ((kvtop(lnc_mem) >> 16) & 0xff);
(sc->trans_ring + i)->md->md2 = 0;
(sc->trans_ring + i)->md->md3 = 0;
(sc->trans_ring + i)->buff.data = lnc_mem;
lnc_mem += TRANSBUFSIZE;
}
}
sc->next_to_send = 0;
/* Set up initialisation block */
sc->init_block->mode = sc->nic.mode;
for (i = 0; i < ETHER_ADDR_LEN; i++)
sc->init_block->padr[i] = sc->arpcom.ac_enaddr[i];
lnc_setladrf(sc);
sc->init_block->rdra = kvtop(sc->recv_ring->md);
sc->init_block->rlen = ((kvtop(sc->recv_ring->md) >> 16) & 0xff) | (sc->nrdre << 13);
sc->init_block->tdra = kvtop(sc->trans_ring->md);
sc->init_block->tlen = ((kvtop(sc->trans_ring->md) >> 16) & 0xff) | (sc->ntdre << 13);
/* Set flags to show that the memory area is valid */
sc->flags |= LNC_INITIALISED;
sc->pending_transmits = 0;
/* Give the LANCE the physical address of the initialisation block */
write_csr(sc, CSR1, kvtop(sc->init_block));
write_csr(sc, CSR2, (kvtop(sc->init_block) >> 16) & 0xff);
/*
* Depending on which controller this is, CSR3 has different meanings.
* For the Am7990 it controls DMA operations, for the Am79C960 it
* controls interrupt masks and transmitter algorithms. In either
* case, none of the flags are set.
*
*/
write_csr(sc, CSR3, 0);
/* Let's see if it starts */
write_csr(sc, CSR0, INIT);
for (i = 0; i < 1000; i++)
if (read_csr(sc, CSR0) & IDON)
break;
/*
* Now that the initialisation is complete there's no reason to
* access anything except CSR0, so we leave RAP pointing there
* so we can just access RDP from now on, saving an outw each
* time.
*/
if (read_csr(sc, CSR0) & IDON) {
/*
* Enable interrupts, start the LANCE, mark the interface as
* running and transmit any pending packets.
*/
write_csr(sc, CSR0, STRT | INEA);
sc->arpcom.ac_if.if_flags |= IFF_RUNNING;
sc->arpcom.ac_if.if_flags &= ~IFF_OACTIVE;
lnc_start(&sc->arpcom.ac_if);
} else
log(LOG_ERR, "lnc%d: Initialisation failed\n",
sc->arpcom.ac_if.if_unit);
splx(s);
}
/*
* The interrupt flag (INTR) will be set and provided that the interrupt enable
* flag (INEA) is also set, the interrupt pin will be driven low when any of
* the following occur:
*
* 1) Completion of the initialisation routine (IDON). 2) The reception of a
* packet (RINT). 3) The transmission of a packet (TINT). 4) A transmitter
* timeout error (BABL). 5) A missed packet (MISS). 6) A memory error (MERR).
*
* The interrupt flag is cleared when all of the above conditions are cleared.
*
* If the driver is reset from this routine then it first checks to see if any
* interrupts have ocurred since the reset and handles them before returning.
* This is because the NIC may signify a pending interrupt in CSR0 using the
* INTR flag even if a hardware interrupt is currently inhibited (at least I
* think it does from reading the data sheets). We may as well deal with
* these pending interrupts now rather than get the overhead of another
* hardware interrupt immediately upon returning from the interrupt handler.
*
*/
void
lncintr_sc(struct lnc_softc *sc)
{
int unit = sc->arpcom.ac_if.if_unit;
u_short csr0;
/*
* INEA is the only bit that can be cleared by writing a 0 to it so
* we have to include it in any writes that clear other flags.
*/
while ((csr0 = inw(sc->rdp)) & INTR) {
/*
* Clear interrupt flags early to avoid race conditions. The
* controller can still set these flags even while we're in
* this interrupt routine. If the flag is still set from the
* event that caused this interrupt any new events will
* be missed.
*/
/* outw(sc->rdp, IDON | CERR | BABL | MISS | MERR | RINT | TINT | INEA); */
outw(sc->rdp, csr0);
/* We don't do anything with the IDON flag */
if (csr0 & ERR) {
if (csr0 & CERR) {
log(LOG_ERR, "lnc%d: Heartbeat error -- SQE test failed\n", unit);
LNCSTATS(cerr)
}
if (csr0 & BABL) {
log(LOG_ERR, "lnc%d: Babble error - more than 1519 bytes transmitted\n", unit);
LNCSTATS(babl)
sc->arpcom.ac_if.if_oerrors++;
}
if (csr0 & MISS) {
log(LOG_ERR, "lnc%d: Missed packet -- no receive buffer\n", unit);
LNCSTATS(miss)
sc->arpcom.ac_if.if_ierrors++;
}
if (csr0 & MERR) {
log(LOG_ERR, "lnc%d: Memory error -- Resetting\n", unit);
LNCSTATS(merr)
lnc_reset(sc);
continue;
}
}
if (csr0 & RINT) {
LNCSTATS(rint)
lnc_rint(sc);
}
if (csr0 & TINT) {
LNCSTATS(tint)
sc->arpcom.ac_if.if_timer = 0;
lnc_tint(sc);
}
/*
* If there's room in the transmit descriptor ring then queue
* some more transmit packets.
*/
if (!(sc->arpcom.ac_if.if_flags & IFF_OACTIVE))
lnc_start(&sc->arpcom.ac_if);
}
}
static void
lncintr(int unit)
{
struct lnc_softc *sc = &lnc_softc[unit];
lncintr_sc (sc);
}
static __inline int
mbuf_to_buffer(struct mbuf *m, char *buffer)
{
int len=0;
for( ; m; m = m->m_next) {
bcopy(mtod(m, caddr_t), buffer, m->m_len);
buffer += m->m_len;
len += m->m_len;
}
return(len);
}
static __inline struct mbuf *
chain_to_cluster(struct mbuf *m)
{
struct mbuf *new;
MGET(new, M_DONTWAIT, MT_DATA);
if (new) {
MCLGET(new, M_DONTWAIT);
if (new->m_ext.ext_buf) {
new->m_len = mbuf_to_buffer(m, new->m_data);
m_freem(m);
return(new);
} else
m_free(new);
}
return(0);
}
/*
* IFF_OACTIVE and IFF_RUNNING are checked in ether_output so it's redundant
* to check them again since we wouldn't have got here if they were not
* appropriately set. This is also called from lnc_init and lncintr but the
* flags should be ok at those points too.
*/
static void
lnc_start(struct ifnet *ifp)
{
struct lnc_softc *sc = ifp->if_softc;
struct host_ring_entry *desc;
int tmp;
int end_of_packet;
struct mbuf *head, *m;
int len, chunk;
int addr;
int no_entries_needed;
do {
IF_DEQUEUE(&sc->arpcom.ac_if.if_snd, head);
if (!head)
return;
if (sc->nic.mem_mode == DMA_MBUF) {
no_entries_needed = 0;
for (m=head; m; m = m->m_next)
no_entries_needed++;
/*
* We try and avoid bcopy as much as possible
* but there are two cases when we use it.
*
* 1) If there are not enough free entries in the ring
* to hold each mbuf in the chain then compact the
* chain into a single cluster.
*
* 2) The Am7990 and Am79C90 must not have less than
* 100 bytes in the first descriptor of a chained
* packet so it's necessary to shuffle the mbuf
* contents to ensure this.
*/
if (no_entries_needed > (NDESC(sc->ntdre) - sc->pending_transmits))
if (!(head = chain_to_cluster(head))) {
log(LOG_ERR, "lnc%d: Couldn't get mbuf for transmit packet -- Resetting \n ",ifp->if_unit);
lnc_reset(sc);
return;
}
else if ((sc->nic.ic == LANCE) || (sc->nic.ic == C_LANCE)) {
if ((head->m_len < 100) && (head->m_next)) {
len = 100 - head->m_len;
if (M_TRAILINGSPACE(head) < len) {
/*
* Move data to start of data
* area. We assume the first
* mbuf has a packet header
* and is not a cluster.
*/
bcopy((caddr_t)head->m_data, (caddr_t)head->m_pktdat, head->m_len);
head->m_data = head->m_pktdat;
}
m = head->m_next;
while (m && (len > 0)) {
chunk = min(len, m->m_len);
bcopy(mtod(m, caddr_t), mtod(head, caddr_t) + head->m_len, chunk);
len -= chunk;
head->m_len += chunk;
m->m_len -= chunk;
m->m_data += chunk;
if (m->m_len <= 0) {
MFREE(m, head->m_next);
m = head->m_next;
}
}
}
}
tmp = sc->next_to_send;
/*
* On entering this loop we know that tmp points to a
* descriptor with a clear OWN bit.
*/
desc = sc->trans_ring + tmp;
len = ETHER_MIN_LEN;
for (m = head; m; m = m->m_next) {
desc->buff.mbuf = m;
addr = kvtop(m->m_data);
desc->md->md0 = addr;
desc->md->md1 = ((addr >> 16) & 0xff);
desc->md->md3 = 0;
desc->md->md2 = -m->m_len;
sc->pending_transmits++;
len -= m->m_len;
INC_MD_PTR(tmp, sc->ntdre)
desc = sc->trans_ring + tmp;
}
end_of_packet = tmp;
DEC_MD_PTR(tmp, sc->ntdre)
desc = sc->trans_ring + tmp;
desc->md->md1 |= ENP;
if (len > 0)
desc->md->md2 -= len;
/*
* Set OWN bits in reverse order, otherwise the Lance
* could start sending the packet before all the
* buffers have been relinquished by the host.
*/
while (tmp != sc->next_to_send) {
desc->md->md1 |= OWN;
DEC_MD_PTR(tmp, sc->ntdre)
desc = sc->trans_ring + tmp;
}
sc->next_to_send = end_of_packet;
desc->md->md1 |= STP | OWN;
} else {
sc->pending_transmits++;
desc = sc->trans_ring + sc->next_to_send;
len = mbuf_to_buffer(head, desc->buff.data);
desc->md->md3 = 0;
desc->md->md2 = -max(len, ETHER_MIN_LEN - ETHER_CRC_LEN);
desc->md->md1 |= OWN | STP | ENP;
INC_MD_PTR(sc->next_to_send, sc->ntdre)
}
/* Force an immediate poll of the transmit ring */
outw(sc->rdp, TDMD | INEA);
/*
* Set a timer so if the buggy Am7990.h shuts
* down we can wake it up.
*/
ifp->if_timer = 2;
#if NBPFILTER > 0
if (sc->arpcom.ac_if.if_bpf)
bpf_mtap(&sc->arpcom.ac_if, head);
#endif
if (sc->nic.mem_mode != DMA_MBUF)
m_freem(head);
} while (sc->pending_transmits < NDESC(sc->ntdre));
/*
* Transmit ring is full so set IFF_OACTIVE
* since we can't buffer any more packets.
*/
sc->arpcom.ac_if.if_flags |= IFF_OACTIVE;
LNCSTATS(trans_ring_full)
}
static int
lnc_ioctl(struct ifnet * ifp, u_long command, caddr_t data)
{
struct lnc_softc *sc = ifp->if_softc;
struct ifaddr *ifa = (struct ifaddr *) data;
struct ifreq *ifr = (struct ifreq *) data;
int s, error = 0;
s = splimp();
switch (command) {
case SIOCSIFADDR:
ifp->if_flags |= IFF_UP;
switch (ifa->ifa_addr->sa_family) {
#ifdef INET
case AF_INET:
lnc_init(sc);
arp_ifinit((struct arpcom *)ifp, ifa);
break;
#endif
default:
lnc_init(sc);
break;
}
break;
case SIOCSIFFLAGS:
#ifdef DEBUG
if (ifp->if_flags & IFF_DEBUG)
sc->lnc_debug = 1;
else
sc->lnc_debug = 0;
#endif
if (ifp->if_flags & IFF_PROMISC) {
if (!(sc->nic.mode & PROM)) {
sc->nic.mode |= PROM;
lnc_init(sc);
}
} else if (sc->nic.mode & PROM) {
sc->nic.mode &= ~PROM;
lnc_init(sc);
}
if ((ifp->if_flags & IFF_ALLMULTI) &&
!(sc->flags & LNC_ALLMULTI)) {
sc->flags |= LNC_ALLMULTI;
lnc_init(sc);
} else if (!(ifp->if_flags & IFF_ALLMULTI) &&
(sc->flags & LNC_ALLMULTI)) {
sc->flags &= ~LNC_ALLMULTI;
lnc_init(sc);
}
if ((ifp->if_flags & IFF_UP) == 0 &&
(ifp->if_flags & IFF_RUNNING) != 0) {
/*
* If interface is marked down and it is running,
* then stop it.
*/
lnc_stop(sc);
ifp->if_flags &= ~IFF_RUNNING;
} else if ((ifp->if_flags & IFF_UP) != 0 &&
(ifp->if_flags & IFF_RUNNING) == 0) {
/*
* If interface is marked up and it is stopped, then
* start it.
*/
lnc_init(sc);
}
break;
case SIOCADDMULTI:
case SIOCDELMULTI:
lnc_init(sc);
error = 0;
break;
case SIOCSIFMTU:
/*
* Set the interface MTU.
*/
if (ifr->ifr_mtu > ETHERMTU) {
error = EINVAL;
} else
ifp->if_mtu = ifr->ifr_mtu;
break;
default:
error = EINVAL;
}
(void) splx(s);
return error;
}
static void
lnc_watchdog(struct ifnet *ifp)
{
log(LOG_ERR, "lnc%d: Device timeout -- Resetting\n", ifp->if_unit);
ifp->if_oerrors++;
lnc_reset(ifp->if_softc);
}
#ifdef DEBUG
void
lnc_dump_state(struct lnc_softc *sc)
{
int i;
printf("\nDriver/NIC [%d] state dump\n", sc->arpcom.ac_if.if_unit);
printf("Memory access mode: %b\n", sc->nic.mem_mode, MEM_MODES);
printf("Host memory\n");
printf("-----------\n");
printf("Receive ring: base = %p, next = %p\n",
(void *)sc->recv_ring, (void *)(sc->recv_ring + sc->recv_next));
for (i = 0; i < NDESC(sc->nrdre); i++)
printf("\t%d:%p md = %p buff = %p\n",
i, (void *)(sc->recv_ring + i),
(void *)(sc->recv_ring + i)->md,
(void *)(sc->recv_ring + i)->buff.data);
printf("Transmit ring: base = %p, next = %p\n",
(void *)sc->trans_ring, (void *)(sc->trans_ring + sc->trans_next));
for (i = 0; i < NDESC(sc->ntdre); i++)
printf("\t%d:%p md = %p buff = %p\n",
i, (void *)(sc->trans_ring + i),
(void *)(sc->trans_ring + i)->md,
(void *)(sc->trans_ring + i)->buff.data);
printf("Lance memory (may be on host(DMA) or card(SHMEM))\n");
printf("Init block = %p\n", (void *)sc->init_block);
printf("\tmode = %b rlen:rdra = %x:%x tlen:tdra = %x:%x\n",
sc->init_block->mode, INIT_MODE, sc->init_block->rlen,
sc->init_block->rdra, sc->init_block->tlen, sc->init_block->tdra);
printf("Receive descriptor ring\n");
for (i = 0; i < NDESC(sc->nrdre); i++)
printf("\t%d buffer = 0x%x%x, BCNT = %d,\tMCNT = %u,\tflags = %b\n",
i, ((sc->recv_ring + i)->md->md1 & HADR),
(sc->recv_ring + i)->md->md0,
-(short) (sc->recv_ring + i)->md->md2,
(sc->recv_ring + i)->md->md3,
(((sc->recv_ring + i)->md->md1 & ~HADR) >> 8), RECV_MD1);
printf("Transmit descriptor ring\n");
for (i = 0; i < NDESC(sc->ntdre); i++)
printf("\t%d buffer = 0x%x%x, BCNT = %d,\tflags = %b %b\n",
i, ((sc->trans_ring + i)->md->md1 & HADR),
(sc->trans_ring + i)->md->md0,
-(short) (sc->trans_ring + i)->md->md2,
((sc->trans_ring + i)->md->md1 >> 8), TRANS_MD1,
((sc->trans_ring + i)->md->md3 >> 10), TRANS_MD3);
printf("\nnext_to_send = %x\n", sc->next_to_send);
printf("\n CSR0 = %b CSR1 = %x CSR2 = %x CSR3 = %x\n\n",
read_csr(sc, CSR0), CSR0_FLAGS, read_csr(sc, CSR1),
read_csr(sc, CSR2), read_csr(sc, CSR3));
/* Set RAP back to CSR0 */
outw(sc->rap, CSR0);
}
void
mbuf_dump_chain(struct mbuf * m)
{
#define MBUF_FLAGS \
"\20\1M_EXT\2M_PKTHDR\3M_EOR\4UNKNOWN\5M_BCAST\6M_MCAST"
if (!m)
log(LOG_DEBUG, "m == NULL\n");
do {
log(LOG_DEBUG, "m = %p\n", (void *)m);
log(LOG_DEBUG, "m_hdr.mh_next = %p\n",
(void *)m->m_hdr.mh_next);
log(LOG_DEBUG, "m_hdr.mh_nextpkt = %p\n",
(void *)m->m_hdr.mh_nextpkt);
log(LOG_DEBUG, "m_hdr.mh_len = %d\n", m->m_hdr.mh_len);
log(LOG_DEBUG, "m_hdr.mh_data = %p\n",
(void *)m->m_hdr.mh_data);
log(LOG_DEBUG, "m_hdr.mh_type = %d\n", m->m_hdr.mh_type);
log(LOG_DEBUG, "m_hdr.mh_flags = %b\n", m->m_hdr.mh_flags,
MBUF_FLAGS);
if (!(m->m_hdr.mh_flags & (M_PKTHDR | M_EXT)))
log(LOG_DEBUG, "M_dat.M_databuf = %p\n",
(void *)m->M_dat.M_databuf);
else {
if (m->m_hdr.mh_flags & M_PKTHDR) {
log(LOG_DEBUG, "M_dat.MH.MH_pkthdr.len = %d\n",
m->M_dat.MH.MH_pkthdr.len);
log(LOG_DEBUG,
"M_dat.MH.MH_pkthdr.rcvif = %p\n",
(void *)m->M_dat.MH.MH_pkthdr.rcvif);
if (!(m->m_hdr.mh_flags & M_EXT))
log(LOG_DEBUG,
"M_dat.MH.MH_dat.MH_databuf = %p\n",
(void *)m->M_dat.MH.MH_dat.MH_databuf);
}
if (m->m_hdr.mh_flags & M_EXT) {
log(LOG_DEBUG,
"M_dat.MH.MH_dat.MH_ext.ext_buff %p\n",
(void *)m->M_dat.MH.MH_dat.MH_ext.ext_buf);
log(LOG_DEBUG,
"M_dat.MH.MH_dat.MH_ext.ext_free %p\n",
(void *)m->M_dat.MH.MH_dat.MH_ext.ext_free);
log(LOG_DEBUG,
"M_dat.MH.MH_dat.MH_ext.ext_size %d\n",
m->M_dat.MH.MH_dat.MH_ext.ext_size);
}
}
} while (m = m->m_next);
}
#endif
#endif
|