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
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684
2685
2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697
2698
2699
2700
2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716
2717
2718
2719
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
2731
2732
2733
2734
2735
2736
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2760
2761
2762
2763
2764
2765
2766
2767
2768
2769
2770
2771
2772
2773
2774
2775
2776
2777
2778
2779
2780
2781
2782
2783
2784
2785
2786
2787
2788
2789
2790
2791
2792
2793
2794
2795
2796
2797
2798
2799
2800
2801
2802
2803
2804
2805
2806
2807
2808
2809
2810
2811
2812
2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827
2828
2829
2830
2831
2832
2833
2834
2835
2836
2837
2838
2839
2840
2841
2842
2843
2844
2845
2846
2847
2848
2849
2850
2851
2852
2853
2854
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869
2870
2871
2872
2873
2874
2875
2876
2877
2878
2879
2880
2881
2882
2883
2884
2885
2886
2887
2888
2889
2890
2891
2892
2893
2894
2895
2896
2897
2898
2899
2900
2901
2902
2903
2904
2905
2906
2907
2908
2909
2910
2911
2912
2913
2914
2915
2916
2917
2918
2919
2920
2921
2922
2923
2924
2925
2926
2927
2928
2929
2930
2931
2932
2933
2934
2935
2936
2937
2938
2939
2940
2941
2942
2943
2944
2945
2946
2947
2948
2949
2950
2951
2952
2953
2954
2955
2956
2957
2958
2959
2960
2961
2962
2963
2964
2965
2966
2967
2968
2969
2970
2971
2972
2973
2974
2975
2976
2977
2978
2979
2980
2981
2982
2983
2984
2985
2986
2987
2988
2989
2990
2991
2992
2993
2994
2995
2996
2997
2998
2999
3000
3001
3002
3003
3004
3005
3006
3007
3008
3009
3010
3011
3012
3013
3014
3015
3016
3017
3018
3019
3020
3021
3022
3023
3024
3025
3026
3027
3028
3029
3030
3031
3032
3033
3034
3035
3036
3037
3038
3039
3040
3041
3042
3043
3044
3045
3046
3047
3048
3049
3050
3051
3052
3053
3054
3055
3056
3057
3058
3059
3060
3061
3062
3063
3064
3065
3066
3067
3068
3069
3070
3071
3072
3073
3074
3075
3076
3077
3078
3079
3080
3081
3082
3083
3084
3085
3086
3087
3088
3089
3090
3091
3092
3093
3094
3095
3096
3097
3098
3099
3100
3101
3102
3103
3104
3105
3106
3107
3108
3109
3110
3111
3112
3113
3114
3115
3116
3117
3118
3119
3120
3121
3122
3123
3124
3125
3126
3127
3128
3129
3130
3131
3132
3133
3134
3135
3136
3137
3138
3139
3140
3141
3142
3143
3144
3145
3146
3147
3148
3149
3150
3151
3152
3153
3154
3155
3156
3157
3158
3159
3160
3161
3162
3163
3164
3165
3166
3167
3168
3169
3170
3171
3172
3173
3174
3175
3176
3177
3178
3179
3180
3181
3182
3183
3184
3185
3186
3187
3188
3189
3190
3191
3192
3193
3194
3195
3196
3197
3198
3199
3200
3201
3202
3203
3204
3205
3206
3207
3208
3209
3210
3211
3212
3213
3214
3215
3216
3217
3218
3219
3220
3221
3222
3223
3224
3225
3226
3227
3228
3229
3230
3231
3232
3233
3234
3235
3236
3237
3238
3239
3240
3241
3242
3243
3244
3245
3246
3247
3248
3249
3250
3251
3252
3253
3254
3255
3256
3257
3258
3259
3260
3261
3262
3263
3264
3265
3266
3267
3268
3269
3270
3271
3272
3273
3274
3275
3276
3277
3278
3279
3280
3281
3282
3283
3284
3285
3286
3287
3288
3289
3290
3291
3292
3293
3294
3295
3296
3297
3298
3299
3300
3301
3302
3303
3304
3305
3306
3307
3308
3309
3310
3311
3312
3313
3314
3315
3316
3317
3318
3319
3320
3321
3322
3323
3324
3325
3326
3327
3328
3329
3330
3331
3332
3333
3334
3335
3336
3337
3338
3339
3340
3341
3342
3343
3344
3345
3346
3347
3348
3349
3350
3351
3352
3353
3354
3355
3356
3357
3358
3359
3360
3361
3362
3363
3364
3365
3366
3367
3368
3369
3370
3371
3372
3373
3374
3375
3376
3377
3378
3379
3380
3381
3382
3383
3384
3385
3386
3387
3388
3389
3390
3391
3392
3393
3394
3395
3396
3397
3398
3399
3400
3401
3402
3403
3404
3405
3406
3407
3408
3409
3410
3411
3412
3413
3414
3415
3416
3417
3418
3419
3420
3421
3422
3423
3424
3425
3426
3427
3428
3429
3430
3431
3432
3433
3434
3435
3436
3437
3438
3439
3440
3441
3442
3443
3444
3445
3446
3447
3448
3449
3450
3451
3452
3453
3454
3455
3456
3457
3458
|
/*-
* Copyright (c) 2008, Pyun YongHyeon <yongari@FreeBSD.org>
* 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 unmodified, this list of conditions, and the following
* disclaimer.
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 THE AUTHOR OR CONTRIBUTORS 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/endian.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/mbuf.h>
#include <sys/rman.h>
#include <sys/module.h>
#include <sys/proc.h>
#include <sys/queue.h>
#include <sys/socket.h>
#include <sys/sockio.h>
#include <sys/sysctl.h>
#include <sys/taskqueue.h>
#include <net/bpf.h>
#include <net/if.h>
#include <net/if_arp.h>
#include <net/ethernet.h>
#include <net/if_dl.h>
#include <net/if_media.h>
#include <net/if_types.h>
#include <net/if_vlan_var.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <netinet/tcp.h>
#include <dev/mii/mii.h>
#include <dev/mii/miivar.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <machine/bus.h>
#include <machine/in_cksum.h>
#include <dev/jme/if_jmereg.h>
#include <dev/jme/if_jmevar.h>
/* "device miibus" required. See GENERIC if you get errors here. */
#include "miibus_if.h"
/* Define the following to disable printing Rx errors. */
#undef JME_SHOW_ERRORS
#define JME_CSUM_FEATURES (CSUM_IP | CSUM_TCP | CSUM_UDP)
MODULE_DEPEND(jme, pci, 1, 1, 1);
MODULE_DEPEND(jme, ether, 1, 1, 1);
MODULE_DEPEND(jme, miibus, 1, 1, 1);
/* Tunables. */
static int msi_disable = 0;
static int msix_disable = 0;
TUNABLE_INT("hw.jme.msi_disable", &msi_disable);
TUNABLE_INT("hw.jme.msix_disable", &msix_disable);
/*
* Devices supported by this driver.
*/
static struct jme_dev {
uint16_t jme_vendorid;
uint16_t jme_deviceid;
const char *jme_name;
} jme_devs[] = {
{ VENDORID_JMICRON, DEVICEID_JMC250,
"JMicron Inc, JMC25x Gigabit Ethernet" },
{ VENDORID_JMICRON, DEVICEID_JMC260,
"JMicron Inc, JMC26x Fast Ethernet" },
};
static int jme_miibus_readreg(device_t, int, int);
static int jme_miibus_writereg(device_t, int, int, int);
static void jme_miibus_statchg(device_t);
static void jme_mediastatus(struct ifnet *, struct ifmediareq *);
static int jme_mediachange(struct ifnet *);
static int jme_probe(device_t);
static int jme_eeprom_read_byte(struct jme_softc *, uint8_t, uint8_t *);
static int jme_eeprom_macaddr(struct jme_softc *);
static int jme_efuse_macaddr(struct jme_softc *);
static void jme_reg_macaddr(struct jme_softc *);
static void jme_set_macaddr(struct jme_softc *, uint8_t *);
static void jme_map_intr_vector(struct jme_softc *);
static int jme_attach(device_t);
static int jme_detach(device_t);
static void jme_sysctl_node(struct jme_softc *);
static void jme_dmamap_cb(void *, bus_dma_segment_t *, int, int);
static int jme_dma_alloc(struct jme_softc *);
static void jme_dma_free(struct jme_softc *);
static int jme_shutdown(device_t);
static void jme_setlinkspeed(struct jme_softc *);
static void jme_setwol(struct jme_softc *);
static int jme_suspend(device_t);
static int jme_resume(device_t);
static int jme_encap(struct jme_softc *, struct mbuf **);
static void jme_start(struct ifnet *);
static void jme_start_locked(struct ifnet *);
static void jme_watchdog(struct jme_softc *);
static int jme_ioctl(struct ifnet *, u_long, caddr_t);
static void jme_mac_config(struct jme_softc *);
static void jme_link_task(void *, int);
static int jme_intr(void *);
static void jme_int_task(void *, int);
static void jme_txeof(struct jme_softc *);
static __inline void jme_discard_rxbuf(struct jme_softc *, int);
static void jme_rxeof(struct jme_softc *);
static int jme_rxintr(struct jme_softc *, int);
static void jme_tick(void *);
static void jme_reset(struct jme_softc *);
static void jme_init(void *);
static void jme_init_locked(struct jme_softc *);
static void jme_stop(struct jme_softc *);
static void jme_stop_tx(struct jme_softc *);
static void jme_stop_rx(struct jme_softc *);
static int jme_init_rx_ring(struct jme_softc *);
static void jme_init_tx_ring(struct jme_softc *);
static void jme_init_ssb(struct jme_softc *);
static int jme_newbuf(struct jme_softc *, struct jme_rxdesc *);
static void jme_set_vlan(struct jme_softc *);
static void jme_set_filter(struct jme_softc *);
static void jme_stats_clear(struct jme_softc *);
static void jme_stats_save(struct jme_softc *);
static void jme_stats_update(struct jme_softc *);
static void jme_phy_down(struct jme_softc *);
static void jme_phy_up(struct jme_softc *);
static int sysctl_int_range(SYSCTL_HANDLER_ARGS, int, int);
static int sysctl_hw_jme_tx_coal_to(SYSCTL_HANDLER_ARGS);
static int sysctl_hw_jme_tx_coal_pkt(SYSCTL_HANDLER_ARGS);
static int sysctl_hw_jme_rx_coal_to(SYSCTL_HANDLER_ARGS);
static int sysctl_hw_jme_rx_coal_pkt(SYSCTL_HANDLER_ARGS);
static int sysctl_hw_jme_proc_limit(SYSCTL_HANDLER_ARGS);
static device_method_t jme_methods[] = {
/* Device interface. */
DEVMETHOD(device_probe, jme_probe),
DEVMETHOD(device_attach, jme_attach),
DEVMETHOD(device_detach, jme_detach),
DEVMETHOD(device_shutdown, jme_shutdown),
DEVMETHOD(device_suspend, jme_suspend),
DEVMETHOD(device_resume, jme_resume),
/* MII interface. */
DEVMETHOD(miibus_readreg, jme_miibus_readreg),
DEVMETHOD(miibus_writereg, jme_miibus_writereg),
DEVMETHOD(miibus_statchg, jme_miibus_statchg),
{ NULL, NULL }
};
static driver_t jme_driver = {
"jme",
jme_methods,
sizeof(struct jme_softc)
};
static devclass_t jme_devclass;
DRIVER_MODULE(jme, pci, jme_driver, jme_devclass, 0, 0);
DRIVER_MODULE(miibus, jme, miibus_driver, miibus_devclass, 0, 0);
static struct resource_spec jme_res_spec_mem[] = {
{ SYS_RES_MEMORY, PCIR_BAR(0), RF_ACTIVE },
{ -1, 0, 0 }
};
static struct resource_spec jme_irq_spec_legacy[] = {
{ SYS_RES_IRQ, 0, RF_ACTIVE | RF_SHAREABLE },
{ -1, 0, 0 }
};
static struct resource_spec jme_irq_spec_msi[] = {
{ SYS_RES_IRQ, 1, RF_ACTIVE },
{ -1, 0, 0 }
};
/*
* Read a PHY register on the MII of the JMC250.
*/
static int
jme_miibus_readreg(device_t dev, int phy, int reg)
{
struct jme_softc *sc;
uint32_t val;
int i;
sc = device_get_softc(dev);
/* For FPGA version, PHY address 0 should be ignored. */
if ((sc->jme_flags & JME_FLAG_FPGA) != 0 && phy == 0)
return (0);
CSR_WRITE_4(sc, JME_SMI, SMI_OP_READ | SMI_OP_EXECUTE |
SMI_PHY_ADDR(phy) | SMI_REG_ADDR(reg));
for (i = JME_PHY_TIMEOUT; i > 0; i--) {
DELAY(1);
if (((val = CSR_READ_4(sc, JME_SMI)) & SMI_OP_EXECUTE) == 0)
break;
}
if (i == 0) {
device_printf(sc->jme_dev, "phy read timeout : %d\n", reg);
return (0);
}
return ((val & SMI_DATA_MASK) >> SMI_DATA_SHIFT);
}
/*
* Write a PHY register on the MII of the JMC250.
*/
static int
jme_miibus_writereg(device_t dev, int phy, int reg, int val)
{
struct jme_softc *sc;
int i;
sc = device_get_softc(dev);
/* For FPGA version, PHY address 0 should be ignored. */
if ((sc->jme_flags & JME_FLAG_FPGA) != 0 && phy == 0)
return (0);
CSR_WRITE_4(sc, JME_SMI, SMI_OP_WRITE | SMI_OP_EXECUTE |
((val << SMI_DATA_SHIFT) & SMI_DATA_MASK) |
SMI_PHY_ADDR(phy) | SMI_REG_ADDR(reg));
for (i = JME_PHY_TIMEOUT; i > 0; i--) {
DELAY(1);
if (((val = CSR_READ_4(sc, JME_SMI)) & SMI_OP_EXECUTE) == 0)
break;
}
if (i == 0)
device_printf(sc->jme_dev, "phy write timeout : %d\n", reg);
return (0);
}
/*
* Callback from MII layer when media changes.
*/
static void
jme_miibus_statchg(device_t dev)
{
struct jme_softc *sc;
sc = device_get_softc(dev);
taskqueue_enqueue(taskqueue_swi, &sc->jme_link_task);
}
/*
* Get the current interface media status.
*/
static void
jme_mediastatus(struct ifnet *ifp, struct ifmediareq *ifmr)
{
struct jme_softc *sc;
struct mii_data *mii;
sc = ifp->if_softc;
JME_LOCK(sc);
if ((ifp->if_flags & IFF_UP) == 0) {
JME_UNLOCK(sc);
return;
}
mii = device_get_softc(sc->jme_miibus);
mii_pollstat(mii);
ifmr->ifm_status = mii->mii_media_status;
ifmr->ifm_active = mii->mii_media_active;
JME_UNLOCK(sc);
}
/*
* Set hardware to newly-selected media.
*/
static int
jme_mediachange(struct ifnet *ifp)
{
struct jme_softc *sc;
struct mii_data *mii;
struct mii_softc *miisc;
int error;
sc = ifp->if_softc;
JME_LOCK(sc);
mii = device_get_softc(sc->jme_miibus);
LIST_FOREACH(miisc, &mii->mii_phys, mii_list)
PHY_RESET(miisc);
error = mii_mediachg(mii);
JME_UNLOCK(sc);
return (error);
}
static int
jme_probe(device_t dev)
{
struct jme_dev *sp;
int i;
uint16_t vendor, devid;
vendor = pci_get_vendor(dev);
devid = pci_get_device(dev);
sp = jme_devs;
for (i = 0; i < sizeof(jme_devs) / sizeof(jme_devs[0]);
i++, sp++) {
if (vendor == sp->jme_vendorid &&
devid == sp->jme_deviceid) {
device_set_desc(dev, sp->jme_name);
return (BUS_PROBE_DEFAULT);
}
}
return (ENXIO);
}
static int
jme_eeprom_read_byte(struct jme_softc *sc, uint8_t addr, uint8_t *val)
{
uint32_t reg;
int i;
*val = 0;
for (i = JME_TIMEOUT; i > 0; i--) {
reg = CSR_READ_4(sc, JME_SMBCSR);
if ((reg & SMBCSR_HW_BUSY_MASK) == SMBCSR_HW_IDLE)
break;
DELAY(1);
}
if (i == 0) {
device_printf(sc->jme_dev, "EEPROM idle timeout!\n");
return (ETIMEDOUT);
}
reg = ((uint32_t)addr << SMBINTF_ADDR_SHIFT) & SMBINTF_ADDR_MASK;
CSR_WRITE_4(sc, JME_SMBINTF, reg | SMBINTF_RD | SMBINTF_CMD_TRIGGER);
for (i = JME_TIMEOUT; i > 0; i--) {
DELAY(1);
reg = CSR_READ_4(sc, JME_SMBINTF);
if ((reg & SMBINTF_CMD_TRIGGER) == 0)
break;
}
if (i == 0) {
device_printf(sc->jme_dev, "EEPROM read timeout!\n");
return (ETIMEDOUT);
}
reg = CSR_READ_4(sc, JME_SMBINTF);
*val = (reg & SMBINTF_RD_DATA_MASK) >> SMBINTF_RD_DATA_SHIFT;
return (0);
}
static int
jme_eeprom_macaddr(struct jme_softc *sc)
{
uint8_t eaddr[ETHER_ADDR_LEN];
uint8_t fup, reg, val;
uint32_t offset;
int match;
offset = 0;
if (jme_eeprom_read_byte(sc, offset++, &fup) != 0 ||
fup != JME_EEPROM_SIG0)
return (ENOENT);
if (jme_eeprom_read_byte(sc, offset++, &fup) != 0 ||
fup != JME_EEPROM_SIG1)
return (ENOENT);
match = 0;
do {
if (jme_eeprom_read_byte(sc, offset, &fup) != 0)
break;
if (JME_EEPROM_MKDESC(JME_EEPROM_FUNC0, JME_EEPROM_PAGE_BAR1) ==
(fup & (JME_EEPROM_FUNC_MASK | JME_EEPROM_PAGE_MASK))) {
if (jme_eeprom_read_byte(sc, offset + 1, ®) != 0)
break;
if (reg >= JME_PAR0 &&
reg < JME_PAR0 + ETHER_ADDR_LEN) {
if (jme_eeprom_read_byte(sc, offset + 2,
&val) != 0)
break;
eaddr[reg - JME_PAR0] = val;
match++;
}
}
/* Check for the end of EEPROM descriptor. */
if ((fup & JME_EEPROM_DESC_END) == JME_EEPROM_DESC_END)
break;
/* Try next eeprom descriptor. */
offset += JME_EEPROM_DESC_BYTES;
} while (match != ETHER_ADDR_LEN && offset < JME_EEPROM_END);
if (match == ETHER_ADDR_LEN) {
bcopy(eaddr, sc->jme_eaddr, ETHER_ADDR_LEN);
return (0);
}
return (ENOENT);
}
static int
jme_efuse_macaddr(struct jme_softc *sc)
{
uint32_t reg;
int i;
reg = pci_read_config(sc->jme_dev, JME_EFUSE_CTL1, 4);
if ((reg & (EFUSE_CTL1_AUTOLOAD_ERR | EFUSE_CTL1_AUTOLAOD_DONE)) !=
EFUSE_CTL1_AUTOLAOD_DONE)
return (ENOENT);
/* Reset eFuse controller. */
reg = pci_read_config(sc->jme_dev, JME_EFUSE_CTL2, 4);
reg |= EFUSE_CTL2_RESET;
pci_write_config(sc->jme_dev, JME_EFUSE_CTL2, reg, 4);
reg = pci_read_config(sc->jme_dev, JME_EFUSE_CTL2, 4);
reg &= ~EFUSE_CTL2_RESET;
pci_write_config(sc->jme_dev, JME_EFUSE_CTL2, reg, 4);
/* Have eFuse reload station address to MAC controller. */
reg = pci_read_config(sc->jme_dev, JME_EFUSE_CTL1, 4);
reg &= ~EFUSE_CTL1_CMD_MASK;
reg |= EFUSE_CTL1_CMD_AUTOLOAD | EFUSE_CTL1_EXECUTE;
pci_write_config(sc->jme_dev, JME_EFUSE_CTL1, reg, 4);
/*
* Verify completion of eFuse autload command. It should be
* completed within 108us.
*/
DELAY(110);
for (i = 10; i > 0; i--) {
reg = pci_read_config(sc->jme_dev, JME_EFUSE_CTL1, 4);
if ((reg & (EFUSE_CTL1_AUTOLOAD_ERR |
EFUSE_CTL1_AUTOLAOD_DONE)) != EFUSE_CTL1_AUTOLAOD_DONE) {
DELAY(20);
continue;
}
if ((reg & EFUSE_CTL1_EXECUTE) == 0)
break;
/* Station address loading is still in progress. */
DELAY(20);
}
if (i == 0) {
device_printf(sc->jme_dev, "eFuse autoload timed out.\n");
return (ETIMEDOUT);
}
return (0);
}
static void
jme_reg_macaddr(struct jme_softc *sc)
{
uint32_t par0, par1;
/* Read station address. */
par0 = CSR_READ_4(sc, JME_PAR0);
par1 = CSR_READ_4(sc, JME_PAR1);
par1 &= 0xFFFF;
if ((par0 == 0 && par1 == 0) ||
(par0 == 0xFFFFFFFF && par1 == 0xFFFF)) {
device_printf(sc->jme_dev,
"Failed to retrieve Ethernet address.\n");
} else {
/*
* For controllers that use eFuse, the station address
* could also be extracted from JME_PCI_PAR0 and
* JME_PCI_PAR1 registers in PCI configuration space.
* Each register holds exactly half of station address(24bits)
* so use JME_PAR0, JME_PAR1 registers instead.
*/
sc->jme_eaddr[0] = (par0 >> 0) & 0xFF;
sc->jme_eaddr[1] = (par0 >> 8) & 0xFF;
sc->jme_eaddr[2] = (par0 >> 16) & 0xFF;
sc->jme_eaddr[3] = (par0 >> 24) & 0xFF;
sc->jme_eaddr[4] = (par1 >> 0) & 0xFF;
sc->jme_eaddr[5] = (par1 >> 8) & 0xFF;
}
}
static void
jme_set_macaddr(struct jme_softc *sc, uint8_t *eaddr)
{
uint32_t val;
int i;
if ((sc->jme_flags & JME_FLAG_EFUSE) != 0) {
/*
* Avoid reprogramming station address if the address
* is the same as previous one. Note, reprogrammed
* station address is permanent as if it was written
* to EEPROM. So if station address was changed by
* admistrator it's possible to lose factory configured
* address when driver fails to restore its address.
* (e.g. reboot or system crash)
*/
if (bcmp(eaddr, sc->jme_eaddr, ETHER_ADDR_LEN) != 0) {
for (i = 0; i < ETHER_ADDR_LEN; i++) {
val = JME_EFUSE_EEPROM_FUNC0 <<
JME_EFUSE_EEPROM_FUNC_SHIFT;
val |= JME_EFUSE_EEPROM_PAGE_BAR1 <<
JME_EFUSE_EEPROM_PAGE_SHIFT;
val |= (JME_PAR0 + i) <<
JME_EFUSE_EEPROM_ADDR_SHIFT;
val |= eaddr[i] << JME_EFUSE_EEPROM_DATA_SHIFT;
pci_write_config(sc->jme_dev, JME_EFUSE_EEPROM,
val | JME_EFUSE_EEPROM_WRITE, 4);
}
}
} else {
CSR_WRITE_4(sc, JME_PAR0,
eaddr[3] << 24 | eaddr[2] << 16 | eaddr[1] << 8 | eaddr[0]);
CSR_WRITE_4(sc, JME_PAR1, eaddr[5] << 8 | eaddr[4]);
}
}
static void
jme_map_intr_vector(struct jme_softc *sc)
{
uint32_t map[MSINUM_NUM_INTR_SOURCE / JME_MSI_MESSAGES];
bzero(map, sizeof(map));
/* Map Tx interrupts source to MSI/MSIX vector 2. */
map[MSINUM_REG_INDEX(N_INTR_TXQ0_COMP)] =
MSINUM_INTR_SOURCE(2, N_INTR_TXQ0_COMP);
map[MSINUM_REG_INDEX(N_INTR_TXQ1_COMP)] |=
MSINUM_INTR_SOURCE(2, N_INTR_TXQ1_COMP);
map[MSINUM_REG_INDEX(N_INTR_TXQ2_COMP)] |=
MSINUM_INTR_SOURCE(2, N_INTR_TXQ2_COMP);
map[MSINUM_REG_INDEX(N_INTR_TXQ3_COMP)] |=
MSINUM_INTR_SOURCE(2, N_INTR_TXQ3_COMP);
map[MSINUM_REG_INDEX(N_INTR_TXQ4_COMP)] |=
MSINUM_INTR_SOURCE(2, N_INTR_TXQ4_COMP);
map[MSINUM_REG_INDEX(N_INTR_TXQ4_COMP)] |=
MSINUM_INTR_SOURCE(2, N_INTR_TXQ5_COMP);
map[MSINUM_REG_INDEX(N_INTR_TXQ6_COMP)] |=
MSINUM_INTR_SOURCE(2, N_INTR_TXQ6_COMP);
map[MSINUM_REG_INDEX(N_INTR_TXQ7_COMP)] |=
MSINUM_INTR_SOURCE(2, N_INTR_TXQ7_COMP);
map[MSINUM_REG_INDEX(N_INTR_TXQ_COAL)] |=
MSINUM_INTR_SOURCE(2, N_INTR_TXQ_COAL);
map[MSINUM_REG_INDEX(N_INTR_TXQ_COAL_TO)] |=
MSINUM_INTR_SOURCE(2, N_INTR_TXQ_COAL_TO);
/* Map Rx interrupts source to MSI/MSIX vector 1. */
map[MSINUM_REG_INDEX(N_INTR_RXQ0_COMP)] =
MSINUM_INTR_SOURCE(1, N_INTR_RXQ0_COMP);
map[MSINUM_REG_INDEX(N_INTR_RXQ1_COMP)] =
MSINUM_INTR_SOURCE(1, N_INTR_RXQ1_COMP);
map[MSINUM_REG_INDEX(N_INTR_RXQ2_COMP)] =
MSINUM_INTR_SOURCE(1, N_INTR_RXQ2_COMP);
map[MSINUM_REG_INDEX(N_INTR_RXQ3_COMP)] =
MSINUM_INTR_SOURCE(1, N_INTR_RXQ3_COMP);
map[MSINUM_REG_INDEX(N_INTR_RXQ0_DESC_EMPTY)] =
MSINUM_INTR_SOURCE(1, N_INTR_RXQ0_DESC_EMPTY);
map[MSINUM_REG_INDEX(N_INTR_RXQ1_DESC_EMPTY)] =
MSINUM_INTR_SOURCE(1, N_INTR_RXQ1_DESC_EMPTY);
map[MSINUM_REG_INDEX(N_INTR_RXQ2_DESC_EMPTY)] =
MSINUM_INTR_SOURCE(1, N_INTR_RXQ2_DESC_EMPTY);
map[MSINUM_REG_INDEX(N_INTR_RXQ3_DESC_EMPTY)] =
MSINUM_INTR_SOURCE(1, N_INTR_RXQ3_DESC_EMPTY);
map[MSINUM_REG_INDEX(N_INTR_RXQ0_COAL)] =
MSINUM_INTR_SOURCE(1, N_INTR_RXQ0_COAL);
map[MSINUM_REG_INDEX(N_INTR_RXQ1_COAL)] =
MSINUM_INTR_SOURCE(1, N_INTR_RXQ1_COAL);
map[MSINUM_REG_INDEX(N_INTR_RXQ2_COAL)] =
MSINUM_INTR_SOURCE(1, N_INTR_RXQ2_COAL);
map[MSINUM_REG_INDEX(N_INTR_RXQ3_COAL)] =
MSINUM_INTR_SOURCE(1, N_INTR_RXQ3_COAL);
map[MSINUM_REG_INDEX(N_INTR_RXQ0_COAL_TO)] =
MSINUM_INTR_SOURCE(1, N_INTR_RXQ0_COAL_TO);
map[MSINUM_REG_INDEX(N_INTR_RXQ1_COAL_TO)] =
MSINUM_INTR_SOURCE(1, N_INTR_RXQ1_COAL_TO);
map[MSINUM_REG_INDEX(N_INTR_RXQ2_COAL_TO)] =
MSINUM_INTR_SOURCE(1, N_INTR_RXQ2_COAL_TO);
map[MSINUM_REG_INDEX(N_INTR_RXQ3_COAL_TO)] =
MSINUM_INTR_SOURCE(1, N_INTR_RXQ3_COAL_TO);
/* Map all other interrupts source to MSI/MSIX vector 0. */
CSR_WRITE_4(sc, JME_MSINUM_BASE + sizeof(uint32_t) * 0, map[0]);
CSR_WRITE_4(sc, JME_MSINUM_BASE + sizeof(uint32_t) * 1, map[1]);
CSR_WRITE_4(sc, JME_MSINUM_BASE + sizeof(uint32_t) * 2, map[2]);
CSR_WRITE_4(sc, JME_MSINUM_BASE + sizeof(uint32_t) * 3, map[3]);
}
static int
jme_attach(device_t dev)
{
struct jme_softc *sc;
struct ifnet *ifp;
struct mii_softc *miisc;
struct mii_data *mii;
uint32_t reg;
uint16_t burst;
int error, i, mii_flags, msic, msixc, pmc;
error = 0;
sc = device_get_softc(dev);
sc->jme_dev = dev;
mtx_init(&sc->jme_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK,
MTX_DEF);
callout_init_mtx(&sc->jme_tick_ch, &sc->jme_mtx, 0);
TASK_INIT(&sc->jme_int_task, 0, jme_int_task, sc);
TASK_INIT(&sc->jme_link_task, 0, jme_link_task, sc);
/*
* Map the device. JMC250 supports both memory mapped and I/O
* register space access. Because I/O register access should
* use different BARs to access registers it's waste of time
* to use I/O register spce access. JMC250 uses 16K to map
* entire memory space.
*/
pci_enable_busmaster(dev);
sc->jme_res_spec = jme_res_spec_mem;
sc->jme_irq_spec = jme_irq_spec_legacy;
error = bus_alloc_resources(dev, sc->jme_res_spec, sc->jme_res);
if (error != 0) {
device_printf(dev, "cannot allocate memory resources.\n");
goto fail;
}
/* Allocate IRQ resources. */
msixc = pci_msix_count(dev);
msic = pci_msi_count(dev);
if (bootverbose) {
device_printf(dev, "MSIX count : %d\n", msixc);
device_printf(dev, "MSI count : %d\n", msic);
}
/* Use 1 MSI/MSI-X. */
if (msixc > 1)
msixc = 1;
if (msic > 1)
msic = 1;
/* Prefer MSIX over MSI. */
if (msix_disable == 0 || msi_disable == 0) {
if (msix_disable == 0 && msixc > 0 &&
pci_alloc_msix(dev, &msixc) == 0) {
if (msixc == 1) {
device_printf(dev, "Using %d MSIX messages.\n",
msixc);
sc->jme_flags |= JME_FLAG_MSIX;
sc->jme_irq_spec = jme_irq_spec_msi;
} else
pci_release_msi(dev);
}
if (msi_disable == 0 && (sc->jme_flags & JME_FLAG_MSIX) == 0 &&
msic > 0 && pci_alloc_msi(dev, &msic) == 0) {
if (msic == 1) {
device_printf(dev, "Using %d MSI messages.\n",
msic);
sc->jme_flags |= JME_FLAG_MSI;
sc->jme_irq_spec = jme_irq_spec_msi;
} else
pci_release_msi(dev);
}
/* Map interrupt vector 0, 1 and 2. */
if ((sc->jme_flags & JME_FLAG_MSI) != 0 ||
(sc->jme_flags & JME_FLAG_MSIX) != 0)
jme_map_intr_vector(sc);
}
error = bus_alloc_resources(dev, sc->jme_irq_spec, sc->jme_irq);
if (error != 0) {
device_printf(dev, "cannot allocate IRQ resources.\n");
goto fail;
}
sc->jme_rev = pci_get_device(dev);
if ((sc->jme_rev & DEVICEID_JMC2XX_MASK) == DEVICEID_JMC260) {
sc->jme_flags |= JME_FLAG_FASTETH;
sc->jme_flags |= JME_FLAG_NOJUMBO;
}
reg = CSR_READ_4(sc, JME_CHIPMODE);
sc->jme_chip_rev = (reg & CHIPMODE_REV_MASK) >> CHIPMODE_REV_SHIFT;
if (((reg & CHIPMODE_FPGA_REV_MASK) >> CHIPMODE_FPGA_REV_SHIFT) !=
CHIPMODE_NOT_FPGA)
sc->jme_flags |= JME_FLAG_FPGA;
if (bootverbose) {
device_printf(dev, "PCI device revision : 0x%04x\n",
sc->jme_rev);
device_printf(dev, "Chip revision : 0x%02x\n",
sc->jme_chip_rev);
if ((sc->jme_flags & JME_FLAG_FPGA) != 0)
device_printf(dev, "FPGA revision : 0x%04x\n",
(reg & CHIPMODE_FPGA_REV_MASK) >>
CHIPMODE_FPGA_REV_SHIFT);
}
if (sc->jme_chip_rev == 0xFF) {
device_printf(dev, "Unknown chip revision : 0x%02x\n",
sc->jme_rev);
error = ENXIO;
goto fail;
}
/* Identify controller features and bugs. */
if (CHIPMODE_REVFM(sc->jme_chip_rev) >= 2) {
if ((sc->jme_rev & DEVICEID_JMC2XX_MASK) == DEVICEID_JMC260 &&
CHIPMODE_REVFM(sc->jme_chip_rev) == 2)
sc->jme_flags |= JME_FLAG_DMA32BIT;
if (CHIPMODE_REVFM(sc->jme_chip_rev) >= 5)
sc->jme_flags |= JME_FLAG_EFUSE | JME_FLAG_PCCPCD;
sc->jme_flags |= JME_FLAG_TXCLK | JME_FLAG_RXCLK;
sc->jme_flags |= JME_FLAG_HWMIB;
}
/* Reset the ethernet controller. */
jme_reset(sc);
/* Get station address. */
if ((sc->jme_flags & JME_FLAG_EFUSE) != 0) {
error = jme_efuse_macaddr(sc);
if (error == 0)
jme_reg_macaddr(sc);
} else {
error = ENOENT;
reg = CSR_READ_4(sc, JME_SMBCSR);
if ((reg & SMBCSR_EEPROM_PRESENT) != 0)
error = jme_eeprom_macaddr(sc);
if (error != 0 && bootverbose)
device_printf(sc->jme_dev,
"ethernet hardware address not found in EEPROM.\n");
if (error != 0)
jme_reg_macaddr(sc);
}
/*
* Save PHY address.
* Integrated JR0211 has fixed PHY address whereas FPGA version
* requires PHY probing to get correct PHY address.
*/
if ((sc->jme_flags & JME_FLAG_FPGA) == 0) {
sc->jme_phyaddr = CSR_READ_4(sc, JME_GPREG0) &
GPREG0_PHY_ADDR_MASK;
if (bootverbose)
device_printf(dev, "PHY is at address %d.\n",
sc->jme_phyaddr);
} else
sc->jme_phyaddr = 0;
/* Set max allowable DMA size. */
if (pci_find_cap(dev, PCIY_EXPRESS, &i) == 0) {
sc->jme_flags |= JME_FLAG_PCIE;
burst = pci_read_config(dev, i + PCIER_DEVICE_CTL, 2);
if (bootverbose) {
device_printf(dev, "Read request size : %d bytes.\n",
128 << ((burst >> 12) & 0x07));
device_printf(dev, "TLP payload size : %d bytes.\n",
128 << ((burst >> 5) & 0x07));
}
switch ((burst >> 12) & 0x07) {
case 0:
sc->jme_tx_dma_size = TXCSR_DMA_SIZE_128;
break;
case 1:
sc->jme_tx_dma_size = TXCSR_DMA_SIZE_256;
break;
default:
sc->jme_tx_dma_size = TXCSR_DMA_SIZE_512;
break;
}
sc->jme_rx_dma_size = RXCSR_DMA_SIZE_128;
} else {
sc->jme_tx_dma_size = TXCSR_DMA_SIZE_512;
sc->jme_rx_dma_size = RXCSR_DMA_SIZE_128;
}
/* Create coalescing sysctl node. */
jme_sysctl_node(sc);
if ((error = jme_dma_alloc(sc)) != 0)
goto fail;
ifp = sc->jme_ifp = if_alloc(IFT_ETHER);
if (ifp == NULL) {
device_printf(dev, "cannot allocate ifnet structure.\n");
error = ENXIO;
goto fail;
}
ifp->if_softc = sc;
if_initname(ifp, device_get_name(dev), device_get_unit(dev));
ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
ifp->if_ioctl = jme_ioctl;
ifp->if_start = jme_start;
ifp->if_init = jme_init;
ifp->if_snd.ifq_drv_maxlen = JME_TX_RING_CNT - 1;
IFQ_SET_MAXLEN(&ifp->if_snd, ifp->if_snd.ifq_drv_maxlen);
IFQ_SET_READY(&ifp->if_snd);
/* JMC250 supports Tx/Rx checksum offload as well as TSO. */
ifp->if_capabilities = IFCAP_HWCSUM | IFCAP_TSO4;
ifp->if_hwassist = JME_CSUM_FEATURES | CSUM_TSO;
if (pci_find_cap(dev, PCIY_PMG, &pmc) == 0) {
sc->jme_flags |= JME_FLAG_PMCAP;
ifp->if_capabilities |= IFCAP_WOL_MAGIC;
}
ifp->if_capenable = ifp->if_capabilities;
/* Wakeup PHY. */
jme_phy_up(sc);
mii_flags = MIIF_DOPAUSE;
/* Ask PHY calibration to PHY driver. */
if (CHIPMODE_REVFM(sc->jme_chip_rev) >= 5)
mii_flags |= MIIF_MACPRIV0;
/* Set up MII bus. */
error = mii_attach(dev, &sc->jme_miibus, ifp, jme_mediachange,
jme_mediastatus, BMSR_DEFCAPMASK,
sc->jme_flags & JME_FLAG_FPGA ? MII_PHY_ANY : sc->jme_phyaddr,
MII_OFFSET_ANY, mii_flags);
if (error != 0) {
device_printf(dev, "attaching PHYs failed\n");
goto fail;
}
/*
* Force PHY to FPGA mode.
*/
if ((sc->jme_flags & JME_FLAG_FPGA) != 0) {
mii = device_get_softc(sc->jme_miibus);
if (mii->mii_instance != 0) {
LIST_FOREACH(miisc, &mii->mii_phys, mii_list) {
if (miisc->mii_phy != 0) {
sc->jme_phyaddr = miisc->mii_phy;
break;
}
}
if (sc->jme_phyaddr != 0) {
device_printf(sc->jme_dev,
"FPGA PHY is at %d\n", sc->jme_phyaddr);
/* vendor magic. */
jme_miibus_writereg(dev, sc->jme_phyaddr, 27,
0x0004);
}
}
}
ether_ifattach(ifp, sc->jme_eaddr);
/* VLAN capability setup */
ifp->if_capabilities |= IFCAP_VLAN_MTU | IFCAP_VLAN_HWTAGGING |
IFCAP_VLAN_HWCSUM | IFCAP_VLAN_HWTSO;
ifp->if_capenable = ifp->if_capabilities;
/* Tell the upper layer(s) we support long frames. */
ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header);
/* Create local taskq. */
sc->jme_tq = taskqueue_create_fast("jme_taskq", M_WAITOK,
taskqueue_thread_enqueue, &sc->jme_tq);
if (sc->jme_tq == NULL) {
device_printf(dev, "could not create taskqueue.\n");
ether_ifdetach(ifp);
error = ENXIO;
goto fail;
}
taskqueue_start_threads(&sc->jme_tq, 1, PI_NET, "%s taskq",
device_get_nameunit(sc->jme_dev));
for (i = 0; i < 1; i++) {
error = bus_setup_intr(dev, sc->jme_irq[i],
INTR_TYPE_NET | INTR_MPSAFE, jme_intr, NULL, sc,
&sc->jme_intrhand[i]);
if (error != 0)
break;
}
if (error != 0) {
device_printf(dev, "could not set up interrupt handler.\n");
taskqueue_free(sc->jme_tq);
sc->jme_tq = NULL;
ether_ifdetach(ifp);
goto fail;
}
fail:
if (error != 0)
jme_detach(dev);
return (error);
}
static int
jme_detach(device_t dev)
{
struct jme_softc *sc;
struct ifnet *ifp;
int i;
sc = device_get_softc(dev);
ifp = sc->jme_ifp;
if (device_is_attached(dev)) {
JME_LOCK(sc);
sc->jme_flags |= JME_FLAG_DETACH;
jme_stop(sc);
JME_UNLOCK(sc);
callout_drain(&sc->jme_tick_ch);
taskqueue_drain(sc->jme_tq, &sc->jme_int_task);
taskqueue_drain(taskqueue_swi, &sc->jme_link_task);
/* Restore possibly modified station address. */
if ((sc->jme_flags & JME_FLAG_EFUSE) != 0)
jme_set_macaddr(sc, sc->jme_eaddr);
ether_ifdetach(ifp);
}
if (sc->jme_tq != NULL) {
taskqueue_drain(sc->jme_tq, &sc->jme_int_task);
taskqueue_free(sc->jme_tq);
sc->jme_tq = NULL;
}
if (sc->jme_miibus != NULL) {
device_delete_child(dev, sc->jme_miibus);
sc->jme_miibus = NULL;
}
bus_generic_detach(dev);
jme_dma_free(sc);
if (ifp != NULL) {
if_free(ifp);
sc->jme_ifp = NULL;
}
for (i = 0; i < 1; i++) {
if (sc->jme_intrhand[i] != NULL) {
bus_teardown_intr(dev, sc->jme_irq[i],
sc->jme_intrhand[i]);
sc->jme_intrhand[i] = NULL;
}
}
if (sc->jme_irq[0] != NULL)
bus_release_resources(dev, sc->jme_irq_spec, sc->jme_irq);
if ((sc->jme_flags & (JME_FLAG_MSIX | JME_FLAG_MSI)) != 0)
pci_release_msi(dev);
if (sc->jme_res[0] != NULL)
bus_release_resources(dev, sc->jme_res_spec, sc->jme_res);
mtx_destroy(&sc->jme_mtx);
return (0);
}
#define JME_SYSCTL_STAT_ADD32(c, h, n, p, d) \
SYSCTL_ADD_UINT(c, h, OID_AUTO, n, CTLFLAG_RD, p, 0, d)
static void
jme_sysctl_node(struct jme_softc *sc)
{
struct sysctl_ctx_list *ctx;
struct sysctl_oid_list *child, *parent;
struct sysctl_oid *tree;
struct jme_hw_stats *stats;
int error;
stats = &sc->jme_stats;
ctx = device_get_sysctl_ctx(sc->jme_dev);
child = SYSCTL_CHILDREN(device_get_sysctl_tree(sc->jme_dev));
SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "tx_coal_to",
CTLTYPE_INT | CTLFLAG_RW, &sc->jme_tx_coal_to, 0,
sysctl_hw_jme_tx_coal_to, "I", "jme tx coalescing timeout");
SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "tx_coal_pkt",
CTLTYPE_INT | CTLFLAG_RW, &sc->jme_tx_coal_pkt, 0,
sysctl_hw_jme_tx_coal_pkt, "I", "jme tx coalescing packet");
SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "rx_coal_to",
CTLTYPE_INT | CTLFLAG_RW, &sc->jme_rx_coal_to, 0,
sysctl_hw_jme_rx_coal_to, "I", "jme rx coalescing timeout");
SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "rx_coal_pkt",
CTLTYPE_INT | CTLFLAG_RW, &sc->jme_rx_coal_pkt, 0,
sysctl_hw_jme_rx_coal_pkt, "I", "jme rx coalescing packet");
SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "process_limit",
CTLTYPE_INT | CTLFLAG_RW, &sc->jme_process_limit, 0,
sysctl_hw_jme_proc_limit, "I",
"max number of Rx events to process");
/* Pull in device tunables. */
sc->jme_process_limit = JME_PROC_DEFAULT;
error = resource_int_value(device_get_name(sc->jme_dev),
device_get_unit(sc->jme_dev), "process_limit",
&sc->jme_process_limit);
if (error == 0) {
if (sc->jme_process_limit < JME_PROC_MIN ||
sc->jme_process_limit > JME_PROC_MAX) {
device_printf(sc->jme_dev,
"process_limit value out of range; "
"using default: %d\n", JME_PROC_DEFAULT);
sc->jme_process_limit = JME_PROC_DEFAULT;
}
}
sc->jme_tx_coal_to = PCCTX_COAL_TO_DEFAULT;
error = resource_int_value(device_get_name(sc->jme_dev),
device_get_unit(sc->jme_dev), "tx_coal_to", &sc->jme_tx_coal_to);
if (error == 0) {
if (sc->jme_tx_coal_to < PCCTX_COAL_TO_MIN ||
sc->jme_tx_coal_to > PCCTX_COAL_TO_MAX) {
device_printf(sc->jme_dev,
"tx_coal_to value out of range; "
"using default: %d\n", PCCTX_COAL_TO_DEFAULT);
sc->jme_tx_coal_to = PCCTX_COAL_TO_DEFAULT;
}
}
sc->jme_tx_coal_pkt = PCCTX_COAL_PKT_DEFAULT;
error = resource_int_value(device_get_name(sc->jme_dev),
device_get_unit(sc->jme_dev), "tx_coal_pkt", &sc->jme_tx_coal_to);
if (error == 0) {
if (sc->jme_tx_coal_pkt < PCCTX_COAL_PKT_MIN ||
sc->jme_tx_coal_pkt > PCCTX_COAL_PKT_MAX) {
device_printf(sc->jme_dev,
"tx_coal_pkt value out of range; "
"using default: %d\n", PCCTX_COAL_PKT_DEFAULT);
sc->jme_tx_coal_pkt = PCCTX_COAL_PKT_DEFAULT;
}
}
sc->jme_rx_coal_to = PCCRX_COAL_TO_DEFAULT;
error = resource_int_value(device_get_name(sc->jme_dev),
device_get_unit(sc->jme_dev), "rx_coal_to", &sc->jme_rx_coal_to);
if (error == 0) {
if (sc->jme_rx_coal_to < PCCRX_COAL_TO_MIN ||
sc->jme_rx_coal_to > PCCRX_COAL_TO_MAX) {
device_printf(sc->jme_dev,
"rx_coal_to value out of range; "
"using default: %d\n", PCCRX_COAL_TO_DEFAULT);
sc->jme_rx_coal_to = PCCRX_COAL_TO_DEFAULT;
}
}
sc->jme_rx_coal_pkt = PCCRX_COAL_PKT_DEFAULT;
error = resource_int_value(device_get_name(sc->jme_dev),
device_get_unit(sc->jme_dev), "rx_coal_pkt", &sc->jme_rx_coal_to);
if (error == 0) {
if (sc->jme_rx_coal_pkt < PCCRX_COAL_PKT_MIN ||
sc->jme_rx_coal_pkt > PCCRX_COAL_PKT_MAX) {
device_printf(sc->jme_dev,
"tx_coal_pkt value out of range; "
"using default: %d\n", PCCRX_COAL_PKT_DEFAULT);
sc->jme_rx_coal_pkt = PCCRX_COAL_PKT_DEFAULT;
}
}
if ((sc->jme_flags & JME_FLAG_HWMIB) == 0)
return;
tree = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, "stats", CTLFLAG_RD,
NULL, "JME statistics");
parent = SYSCTL_CHILDREN(tree);
/* Rx statistics. */
tree = SYSCTL_ADD_NODE(ctx, parent, OID_AUTO, "rx", CTLFLAG_RD,
NULL, "Rx MAC statistics");
child = SYSCTL_CHILDREN(tree);
JME_SYSCTL_STAT_ADD32(ctx, child, "good_frames",
&stats->rx_good_frames, "Good frames");
JME_SYSCTL_STAT_ADD32(ctx, child, "crc_errs",
&stats->rx_crc_errs, "CRC errors");
JME_SYSCTL_STAT_ADD32(ctx, child, "mii_errs",
&stats->rx_mii_errs, "MII errors");
JME_SYSCTL_STAT_ADD32(ctx, child, "fifo_oflows",
&stats->rx_fifo_oflows, "FIFO overflows");
JME_SYSCTL_STAT_ADD32(ctx, child, "desc_empty",
&stats->rx_desc_empty, "Descriptor empty");
JME_SYSCTL_STAT_ADD32(ctx, child, "bad_frames",
&stats->rx_bad_frames, "Bad frames");
/* Tx statistics. */
tree = SYSCTL_ADD_NODE(ctx, parent, OID_AUTO, "tx", CTLFLAG_RD,
NULL, "Tx MAC statistics");
child = SYSCTL_CHILDREN(tree);
JME_SYSCTL_STAT_ADD32(ctx, child, "good_frames",
&stats->tx_good_frames, "Good frames");
JME_SYSCTL_STAT_ADD32(ctx, child, "bad_frames",
&stats->tx_bad_frames, "Bad frames");
}
#undef JME_SYSCTL_STAT_ADD32
struct jme_dmamap_arg {
bus_addr_t jme_busaddr;
};
static void
jme_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nsegs, int error)
{
struct jme_dmamap_arg *ctx;
if (error != 0)
return;
KASSERT(nsegs == 1, ("%s: %d segments returned!", __func__, nsegs));
ctx = (struct jme_dmamap_arg *)arg;
ctx->jme_busaddr = segs[0].ds_addr;
}
static int
jme_dma_alloc(struct jme_softc *sc)
{
struct jme_dmamap_arg ctx;
struct jme_txdesc *txd;
struct jme_rxdesc *rxd;
bus_addr_t lowaddr, rx_ring_end, tx_ring_end;
int error, i;
lowaddr = BUS_SPACE_MAXADDR;
if ((sc->jme_flags & JME_FLAG_DMA32BIT) != 0)
lowaddr = BUS_SPACE_MAXADDR_32BIT;
again:
/* Create parent ring tag. */
error = bus_dma_tag_create(bus_get_dma_tag(sc->jme_dev),/* parent */
1, 0, /* algnmnt, boundary */
lowaddr, /* lowaddr */
BUS_SPACE_MAXADDR, /* highaddr */
NULL, NULL, /* filter, filterarg */
BUS_SPACE_MAXSIZE_32BIT, /* maxsize */
0, /* nsegments */
BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
0, /* flags */
NULL, NULL, /* lockfunc, lockarg */
&sc->jme_cdata.jme_ring_tag);
if (error != 0) {
device_printf(sc->jme_dev,
"could not create parent ring DMA tag.\n");
goto fail;
}
/* Create tag for Tx ring. */
error = bus_dma_tag_create(sc->jme_cdata.jme_ring_tag,/* parent */
JME_TX_RING_ALIGN, 0, /* algnmnt, boundary */
BUS_SPACE_MAXADDR, /* lowaddr */
BUS_SPACE_MAXADDR, /* highaddr */
NULL, NULL, /* filter, filterarg */
JME_TX_RING_SIZE, /* maxsize */
1, /* nsegments */
JME_TX_RING_SIZE, /* maxsegsize */
0, /* flags */
NULL, NULL, /* lockfunc, lockarg */
&sc->jme_cdata.jme_tx_ring_tag);
if (error != 0) {
device_printf(sc->jme_dev,
"could not allocate Tx ring DMA tag.\n");
goto fail;
}
/* Create tag for Rx ring. */
error = bus_dma_tag_create(sc->jme_cdata.jme_ring_tag,/* parent */
JME_RX_RING_ALIGN, 0, /* algnmnt, boundary */
lowaddr, /* lowaddr */
BUS_SPACE_MAXADDR, /* highaddr */
NULL, NULL, /* filter, filterarg */
JME_RX_RING_SIZE, /* maxsize */
1, /* nsegments */
JME_RX_RING_SIZE, /* maxsegsize */
0, /* flags */
NULL, NULL, /* lockfunc, lockarg */
&sc->jme_cdata.jme_rx_ring_tag);
if (error != 0) {
device_printf(sc->jme_dev,
"could not allocate Rx ring DMA tag.\n");
goto fail;
}
/* Allocate DMA'able memory and load the DMA map for Tx ring. */
error = bus_dmamem_alloc(sc->jme_cdata.jme_tx_ring_tag,
(void **)&sc->jme_rdata.jme_tx_ring,
BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT,
&sc->jme_cdata.jme_tx_ring_map);
if (error != 0) {
device_printf(sc->jme_dev,
"could not allocate DMA'able memory for Tx ring.\n");
goto fail;
}
ctx.jme_busaddr = 0;
error = bus_dmamap_load(sc->jme_cdata.jme_tx_ring_tag,
sc->jme_cdata.jme_tx_ring_map, sc->jme_rdata.jme_tx_ring,
JME_TX_RING_SIZE, jme_dmamap_cb, &ctx, BUS_DMA_NOWAIT);
if (error != 0 || ctx.jme_busaddr == 0) {
device_printf(sc->jme_dev,
"could not load DMA'able memory for Tx ring.\n");
goto fail;
}
sc->jme_rdata.jme_tx_ring_paddr = ctx.jme_busaddr;
/* Allocate DMA'able memory and load the DMA map for Rx ring. */
error = bus_dmamem_alloc(sc->jme_cdata.jme_rx_ring_tag,
(void **)&sc->jme_rdata.jme_rx_ring,
BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT,
&sc->jme_cdata.jme_rx_ring_map);
if (error != 0) {
device_printf(sc->jme_dev,
"could not allocate DMA'able memory for Rx ring.\n");
goto fail;
}
ctx.jme_busaddr = 0;
error = bus_dmamap_load(sc->jme_cdata.jme_rx_ring_tag,
sc->jme_cdata.jme_rx_ring_map, sc->jme_rdata.jme_rx_ring,
JME_RX_RING_SIZE, jme_dmamap_cb, &ctx, BUS_DMA_NOWAIT);
if (error != 0 || ctx.jme_busaddr == 0) {
device_printf(sc->jme_dev,
"could not load DMA'able memory for Rx ring.\n");
goto fail;
}
sc->jme_rdata.jme_rx_ring_paddr = ctx.jme_busaddr;
if (lowaddr != BUS_SPACE_MAXADDR_32BIT) {
/* Tx/Rx descriptor queue should reside within 4GB boundary. */
tx_ring_end = sc->jme_rdata.jme_tx_ring_paddr +
JME_TX_RING_SIZE;
rx_ring_end = sc->jme_rdata.jme_rx_ring_paddr +
JME_RX_RING_SIZE;
if ((JME_ADDR_HI(tx_ring_end) !=
JME_ADDR_HI(sc->jme_rdata.jme_tx_ring_paddr)) ||
(JME_ADDR_HI(rx_ring_end) !=
JME_ADDR_HI(sc->jme_rdata.jme_rx_ring_paddr))) {
device_printf(sc->jme_dev, "4GB boundary crossed, "
"switching to 32bit DMA address mode.\n");
jme_dma_free(sc);
/* Limit DMA address space to 32bit and try again. */
lowaddr = BUS_SPACE_MAXADDR_32BIT;
goto again;
}
}
lowaddr = BUS_SPACE_MAXADDR;
if ((sc->jme_flags & JME_FLAG_DMA32BIT) != 0)
lowaddr = BUS_SPACE_MAXADDR_32BIT;
/* Create parent buffer tag. */
error = bus_dma_tag_create(bus_get_dma_tag(sc->jme_dev),/* parent */
1, 0, /* algnmnt, boundary */
lowaddr, /* lowaddr */
BUS_SPACE_MAXADDR, /* highaddr */
NULL, NULL, /* filter, filterarg */
BUS_SPACE_MAXSIZE_32BIT, /* maxsize */
0, /* nsegments */
BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
0, /* flags */
NULL, NULL, /* lockfunc, lockarg */
&sc->jme_cdata.jme_buffer_tag);
if (error != 0) {
device_printf(sc->jme_dev,
"could not create parent buffer DMA tag.\n");
goto fail;
}
/* Create shadow status block tag. */
error = bus_dma_tag_create(sc->jme_cdata.jme_buffer_tag,/* parent */
JME_SSB_ALIGN, 0, /* algnmnt, boundary */
BUS_SPACE_MAXADDR, /* lowaddr */
BUS_SPACE_MAXADDR, /* highaddr */
NULL, NULL, /* filter, filterarg */
JME_SSB_SIZE, /* maxsize */
1, /* nsegments */
JME_SSB_SIZE, /* maxsegsize */
0, /* flags */
NULL, NULL, /* lockfunc, lockarg */
&sc->jme_cdata.jme_ssb_tag);
if (error != 0) {
device_printf(sc->jme_dev,
"could not create shared status block DMA tag.\n");
goto fail;
}
/* Create tag for Tx buffers. */
error = bus_dma_tag_create(sc->jme_cdata.jme_buffer_tag,/* parent */
1, 0, /* algnmnt, boundary */
BUS_SPACE_MAXADDR, /* lowaddr */
BUS_SPACE_MAXADDR, /* highaddr */
NULL, NULL, /* filter, filterarg */
JME_TSO_MAXSIZE, /* maxsize */
JME_MAXTXSEGS, /* nsegments */
JME_TSO_MAXSEGSIZE, /* maxsegsize */
0, /* flags */
NULL, NULL, /* lockfunc, lockarg */
&sc->jme_cdata.jme_tx_tag);
if (error != 0) {
device_printf(sc->jme_dev, "could not create Tx DMA tag.\n");
goto fail;
}
/* Create tag for Rx buffers. */
error = bus_dma_tag_create(sc->jme_cdata.jme_buffer_tag,/* parent */
JME_RX_BUF_ALIGN, 0, /* algnmnt, boundary */
BUS_SPACE_MAXADDR, /* lowaddr */
BUS_SPACE_MAXADDR, /* highaddr */
NULL, NULL, /* filter, filterarg */
MCLBYTES, /* maxsize */
1, /* nsegments */
MCLBYTES, /* maxsegsize */
0, /* flags */
NULL, NULL, /* lockfunc, lockarg */
&sc->jme_cdata.jme_rx_tag);
if (error != 0) {
device_printf(sc->jme_dev, "could not create Rx DMA tag.\n");
goto fail;
}
/*
* Allocate DMA'able memory and load the DMA map for shared
* status block.
*/
error = bus_dmamem_alloc(sc->jme_cdata.jme_ssb_tag,
(void **)&sc->jme_rdata.jme_ssb_block,
BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT,
&sc->jme_cdata.jme_ssb_map);
if (error != 0) {
device_printf(sc->jme_dev, "could not allocate DMA'able "
"memory for shared status block.\n");
goto fail;
}
ctx.jme_busaddr = 0;
error = bus_dmamap_load(sc->jme_cdata.jme_ssb_tag,
sc->jme_cdata.jme_ssb_map, sc->jme_rdata.jme_ssb_block,
JME_SSB_SIZE, jme_dmamap_cb, &ctx, BUS_DMA_NOWAIT);
if (error != 0 || ctx.jme_busaddr == 0) {
device_printf(sc->jme_dev, "could not load DMA'able memory "
"for shared status block.\n");
goto fail;
}
sc->jme_rdata.jme_ssb_block_paddr = ctx.jme_busaddr;
/* Create DMA maps for Tx buffers. */
for (i = 0; i < JME_TX_RING_CNT; i++) {
txd = &sc->jme_cdata.jme_txdesc[i];
txd->tx_m = NULL;
txd->tx_dmamap = NULL;
error = bus_dmamap_create(sc->jme_cdata.jme_tx_tag, 0,
&txd->tx_dmamap);
if (error != 0) {
device_printf(sc->jme_dev,
"could not create Tx dmamap.\n");
goto fail;
}
}
/* Create DMA maps for Rx buffers. */
if ((error = bus_dmamap_create(sc->jme_cdata.jme_rx_tag, 0,
&sc->jme_cdata.jme_rx_sparemap)) != 0) {
device_printf(sc->jme_dev,
"could not create spare Rx dmamap.\n");
goto fail;
}
for (i = 0; i < JME_RX_RING_CNT; i++) {
rxd = &sc->jme_cdata.jme_rxdesc[i];
rxd->rx_m = NULL;
rxd->rx_dmamap = NULL;
error = bus_dmamap_create(sc->jme_cdata.jme_rx_tag, 0,
&rxd->rx_dmamap);
if (error != 0) {
device_printf(sc->jme_dev,
"could not create Rx dmamap.\n");
goto fail;
}
}
fail:
return (error);
}
static void
jme_dma_free(struct jme_softc *sc)
{
struct jme_txdesc *txd;
struct jme_rxdesc *rxd;
int i;
/* Tx ring */
if (sc->jme_cdata.jme_tx_ring_tag != NULL) {
if (sc->jme_cdata.jme_tx_ring_map)
bus_dmamap_unload(sc->jme_cdata.jme_tx_ring_tag,
sc->jme_cdata.jme_tx_ring_map);
if (sc->jme_cdata.jme_tx_ring_map &&
sc->jme_rdata.jme_tx_ring)
bus_dmamem_free(sc->jme_cdata.jme_tx_ring_tag,
sc->jme_rdata.jme_tx_ring,
sc->jme_cdata.jme_tx_ring_map);
sc->jme_rdata.jme_tx_ring = NULL;
sc->jme_cdata.jme_tx_ring_map = NULL;
bus_dma_tag_destroy(sc->jme_cdata.jme_tx_ring_tag);
sc->jme_cdata.jme_tx_ring_tag = NULL;
}
/* Rx ring */
if (sc->jme_cdata.jme_rx_ring_tag != NULL) {
if (sc->jme_cdata.jme_rx_ring_map)
bus_dmamap_unload(sc->jme_cdata.jme_rx_ring_tag,
sc->jme_cdata.jme_rx_ring_map);
if (sc->jme_cdata.jme_rx_ring_map &&
sc->jme_rdata.jme_rx_ring)
bus_dmamem_free(sc->jme_cdata.jme_rx_ring_tag,
sc->jme_rdata.jme_rx_ring,
sc->jme_cdata.jme_rx_ring_map);
sc->jme_rdata.jme_rx_ring = NULL;
sc->jme_cdata.jme_rx_ring_map = NULL;
bus_dma_tag_destroy(sc->jme_cdata.jme_rx_ring_tag);
sc->jme_cdata.jme_rx_ring_tag = NULL;
}
/* Tx buffers */
if (sc->jme_cdata.jme_tx_tag != NULL) {
for (i = 0; i < JME_TX_RING_CNT; i++) {
txd = &sc->jme_cdata.jme_txdesc[i];
if (txd->tx_dmamap != NULL) {
bus_dmamap_destroy(sc->jme_cdata.jme_tx_tag,
txd->tx_dmamap);
txd->tx_dmamap = NULL;
}
}
bus_dma_tag_destroy(sc->jme_cdata.jme_tx_tag);
sc->jme_cdata.jme_tx_tag = NULL;
}
/* Rx buffers */
if (sc->jme_cdata.jme_rx_tag != NULL) {
for (i = 0; i < JME_RX_RING_CNT; i++) {
rxd = &sc->jme_cdata.jme_rxdesc[i];
if (rxd->rx_dmamap != NULL) {
bus_dmamap_destroy(sc->jme_cdata.jme_rx_tag,
rxd->rx_dmamap);
rxd->rx_dmamap = NULL;
}
}
if (sc->jme_cdata.jme_rx_sparemap != NULL) {
bus_dmamap_destroy(sc->jme_cdata.jme_rx_tag,
sc->jme_cdata.jme_rx_sparemap);
sc->jme_cdata.jme_rx_sparemap = NULL;
}
bus_dma_tag_destroy(sc->jme_cdata.jme_rx_tag);
sc->jme_cdata.jme_rx_tag = NULL;
}
/* Shared status block. */
if (sc->jme_cdata.jme_ssb_tag != NULL) {
if (sc->jme_cdata.jme_ssb_map)
bus_dmamap_unload(sc->jme_cdata.jme_ssb_tag,
sc->jme_cdata.jme_ssb_map);
if (sc->jme_cdata.jme_ssb_map && sc->jme_rdata.jme_ssb_block)
bus_dmamem_free(sc->jme_cdata.jme_ssb_tag,
sc->jme_rdata.jme_ssb_block,
sc->jme_cdata.jme_ssb_map);
sc->jme_rdata.jme_ssb_block = NULL;
sc->jme_cdata.jme_ssb_map = NULL;
bus_dma_tag_destroy(sc->jme_cdata.jme_ssb_tag);
sc->jme_cdata.jme_ssb_tag = NULL;
}
if (sc->jme_cdata.jme_buffer_tag != NULL) {
bus_dma_tag_destroy(sc->jme_cdata.jme_buffer_tag);
sc->jme_cdata.jme_buffer_tag = NULL;
}
if (sc->jme_cdata.jme_ring_tag != NULL) {
bus_dma_tag_destroy(sc->jme_cdata.jme_ring_tag);
sc->jme_cdata.jme_ring_tag = NULL;
}
}
/*
* Make sure the interface is stopped at reboot time.
*/
static int
jme_shutdown(device_t dev)
{
return (jme_suspend(dev));
}
/*
* Unlike other ethernet controllers, JMC250 requires
* explicit resetting link speed to 10/100Mbps as gigabit
* link will cunsume more power than 375mA.
* Note, we reset the link speed to 10/100Mbps with
* auto-negotiation but we don't know whether that operation
* would succeed or not as we have no control after powering
* off. If the renegotiation fail WOL may not work. Running
* at 1Gbps draws more power than 375mA at 3.3V which is
* specified in PCI specification and that would result in
* complete shutdowning power to ethernet controller.
*
* TODO
* Save current negotiated media speed/duplex/flow-control
* to softc and restore the same link again after resuming.
* PHY handling such as power down/resetting to 100Mbps
* may be better handled in suspend method in phy driver.
*/
static void
jme_setlinkspeed(struct jme_softc *sc)
{
struct mii_data *mii;
int aneg, i;
JME_LOCK_ASSERT(sc);
mii = device_get_softc(sc->jme_miibus);
mii_pollstat(mii);
aneg = 0;
if ((mii->mii_media_status & IFM_AVALID) != 0) {
switch IFM_SUBTYPE(mii->mii_media_active) {
case IFM_10_T:
case IFM_100_TX:
return;
case IFM_1000_T:
aneg++;
default:
break;
}
}
jme_miibus_writereg(sc->jme_dev, sc->jme_phyaddr, MII_100T2CR, 0);
jme_miibus_writereg(sc->jme_dev, sc->jme_phyaddr, MII_ANAR,
ANAR_TX_FD | ANAR_TX | ANAR_10_FD | ANAR_10 | ANAR_CSMA);
jme_miibus_writereg(sc->jme_dev, sc->jme_phyaddr, MII_BMCR,
BMCR_AUTOEN | BMCR_STARTNEG);
DELAY(1000);
if (aneg != 0) {
/* Poll link state until jme(4) get a 10/100 link. */
for (i = 0; i < MII_ANEGTICKS_GIGE; i++) {
mii_pollstat(mii);
if ((mii->mii_media_status & IFM_AVALID) != 0) {
switch (IFM_SUBTYPE(mii->mii_media_active)) {
case IFM_10_T:
case IFM_100_TX:
jme_mac_config(sc);
return;
default:
break;
}
}
JME_UNLOCK(sc);
pause("jmelnk", hz);
JME_LOCK(sc);
}
if (i == MII_ANEGTICKS_GIGE)
device_printf(sc->jme_dev, "establishing link failed, "
"WOL may not work!");
}
/*
* No link, force MAC to have 100Mbps, full-duplex link.
* This is the last resort and may/may not work.
*/
mii->mii_media_status = IFM_AVALID | IFM_ACTIVE;
mii->mii_media_active = IFM_ETHER | IFM_100_TX | IFM_FDX;
jme_mac_config(sc);
}
static void
jme_setwol(struct jme_softc *sc)
{
struct ifnet *ifp;
uint32_t gpr, pmcs;
uint16_t pmstat;
int pmc;
JME_LOCK_ASSERT(sc);
if (pci_find_cap(sc->jme_dev, PCIY_PMG, &pmc) != 0) {
/* Remove Tx MAC/offload clock to save more power. */
if ((sc->jme_flags & JME_FLAG_TXCLK) != 0)
CSR_WRITE_4(sc, JME_GHC, CSR_READ_4(sc, JME_GHC) &
~(GHC_TX_OFFLD_CLK_100 | GHC_TX_MAC_CLK_100 |
GHC_TX_OFFLD_CLK_1000 | GHC_TX_MAC_CLK_1000));
if ((sc->jme_flags & JME_FLAG_RXCLK) != 0)
CSR_WRITE_4(sc, JME_GPREG1,
CSR_READ_4(sc, JME_GPREG1) | GPREG1_RX_MAC_CLK_DIS);
/* No PME capability, PHY power down. */
jme_phy_down(sc);
return;
}
ifp = sc->jme_ifp;
gpr = CSR_READ_4(sc, JME_GPREG0) & ~GPREG0_PME_ENB;
pmcs = CSR_READ_4(sc, JME_PMCS);
pmcs &= ~PMCS_WOL_ENB_MASK;
if ((ifp->if_capenable & IFCAP_WOL_MAGIC) != 0) {
pmcs |= PMCS_MAGIC_FRAME | PMCS_MAGIC_FRAME_ENB;
/* Enable PME message. */
gpr |= GPREG0_PME_ENB;
/* For gigabit controllers, reset link speed to 10/100. */
if ((sc->jme_flags & JME_FLAG_FASTETH) == 0)
jme_setlinkspeed(sc);
}
CSR_WRITE_4(sc, JME_PMCS, pmcs);
CSR_WRITE_4(sc, JME_GPREG0, gpr);
/* Remove Tx MAC/offload clock to save more power. */
if ((sc->jme_flags & JME_FLAG_TXCLK) != 0)
CSR_WRITE_4(sc, JME_GHC, CSR_READ_4(sc, JME_GHC) &
~(GHC_TX_OFFLD_CLK_100 | GHC_TX_MAC_CLK_100 |
GHC_TX_OFFLD_CLK_1000 | GHC_TX_MAC_CLK_1000));
/* Request PME. */
pmstat = pci_read_config(sc->jme_dev, pmc + PCIR_POWER_STATUS, 2);
pmstat &= ~(PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE);
if ((ifp->if_capenable & IFCAP_WOL) != 0)
pmstat |= PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE;
pci_write_config(sc->jme_dev, pmc + PCIR_POWER_STATUS, pmstat, 2);
if ((ifp->if_capenable & IFCAP_WOL) == 0) {
/* No WOL, PHY power down. */
jme_phy_down(sc);
}
}
static int
jme_suspend(device_t dev)
{
struct jme_softc *sc;
sc = device_get_softc(dev);
JME_LOCK(sc);
jme_stop(sc);
jme_setwol(sc);
JME_UNLOCK(sc);
return (0);
}
static int
jme_resume(device_t dev)
{
struct jme_softc *sc;
struct ifnet *ifp;
uint16_t pmstat;
int pmc;
sc = device_get_softc(dev);
JME_LOCK(sc);
if (pci_find_cap(sc->jme_dev, PCIY_PMG, &pmc) == 0) {
pmstat = pci_read_config(sc->jme_dev,
pmc + PCIR_POWER_STATUS, 2);
/* Disable PME clear PME status. */
pmstat &= ~PCIM_PSTAT_PMEENABLE;
pci_write_config(sc->jme_dev,
pmc + PCIR_POWER_STATUS, pmstat, 2);
}
/* Wakeup PHY. */
jme_phy_up(sc);
ifp = sc->jme_ifp;
if ((ifp->if_flags & IFF_UP) != 0) {
ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
jme_init_locked(sc);
}
JME_UNLOCK(sc);
return (0);
}
static int
jme_encap(struct jme_softc *sc, struct mbuf **m_head)
{
struct jme_txdesc *txd;
struct jme_desc *desc;
struct mbuf *m;
bus_dma_segment_t txsegs[JME_MAXTXSEGS];
int error, i, nsegs, prod;
uint32_t cflags, tsosegsz;
JME_LOCK_ASSERT(sc);
M_ASSERTPKTHDR((*m_head));
if (((*m_head)->m_pkthdr.csum_flags & CSUM_TSO) != 0) {
/*
* Due to the adherence to NDIS specification JMC250
* assumes upper stack computed TCP pseudo checksum
* without including payload length. This breaks
* checksum offload for TSO case so recompute TCP
* pseudo checksum for JMC250. Hopefully this wouldn't
* be much burden on modern CPUs.
*/
struct ether_header *eh;
struct ip *ip;
struct tcphdr *tcp;
uint32_t ip_off, poff;
if (M_WRITABLE(*m_head) == 0) {
/* Get a writable copy. */
m = m_dup(*m_head, M_NOWAIT);
m_freem(*m_head);
if (m == NULL) {
*m_head = NULL;
return (ENOBUFS);
}
*m_head = m;
}
ip_off = sizeof(struct ether_header);
m = m_pullup(*m_head, ip_off);
if (m == NULL) {
*m_head = NULL;
return (ENOBUFS);
}
eh = mtod(m, struct ether_header *);
/* Check the existence of VLAN tag. */
if (eh->ether_type == htons(ETHERTYPE_VLAN)) {
ip_off = sizeof(struct ether_vlan_header);
m = m_pullup(m, ip_off);
if (m == NULL) {
*m_head = NULL;
return (ENOBUFS);
}
}
m = m_pullup(m, ip_off + sizeof(struct ip));
if (m == NULL) {
*m_head = NULL;
return (ENOBUFS);
}
ip = (struct ip *)(mtod(m, char *) + ip_off);
poff = ip_off + (ip->ip_hl << 2);
m = m_pullup(m, poff + sizeof(struct tcphdr));
if (m == NULL) {
*m_head = NULL;
return (ENOBUFS);
}
/*
* Reset IP checksum and recompute TCP pseudo
* checksum that NDIS specification requires.
*/
ip = (struct ip *)(mtod(m, char *) + ip_off);
tcp = (struct tcphdr *)(mtod(m, char *) + poff);
ip->ip_sum = 0;
if (poff + (tcp->th_off << 2) == m->m_pkthdr.len) {
tcp->th_sum = in_pseudo(ip->ip_src.s_addr,
ip->ip_dst.s_addr,
htons((tcp->th_off << 2) + IPPROTO_TCP));
/* No need to TSO, force IP checksum offload. */
(*m_head)->m_pkthdr.csum_flags &= ~CSUM_TSO;
(*m_head)->m_pkthdr.csum_flags |= CSUM_IP;
} else
tcp->th_sum = in_pseudo(ip->ip_src.s_addr,
ip->ip_dst.s_addr, htons(IPPROTO_TCP));
*m_head = m;
}
prod = sc->jme_cdata.jme_tx_prod;
txd = &sc->jme_cdata.jme_txdesc[prod];
error = bus_dmamap_load_mbuf_sg(sc->jme_cdata.jme_tx_tag,
txd->tx_dmamap, *m_head, txsegs, &nsegs, 0);
if (error == EFBIG) {
m = m_collapse(*m_head, M_NOWAIT, JME_MAXTXSEGS);
if (m == NULL) {
m_freem(*m_head);
*m_head = NULL;
return (ENOMEM);
}
*m_head = m;
error = bus_dmamap_load_mbuf_sg(sc->jme_cdata.jme_tx_tag,
txd->tx_dmamap, *m_head, txsegs, &nsegs, 0);
if (error != 0) {
m_freem(*m_head);
*m_head = NULL;
return (error);
}
} else if (error != 0)
return (error);
if (nsegs == 0) {
m_freem(*m_head);
*m_head = NULL;
return (EIO);
}
/*
* Check descriptor overrun. Leave one free descriptor.
* Since we always use 64bit address mode for transmitting,
* each Tx request requires one more dummy descriptor.
*/
if (sc->jme_cdata.jme_tx_cnt + nsegs + 1 > JME_TX_RING_CNT - 1) {
bus_dmamap_unload(sc->jme_cdata.jme_tx_tag, txd->tx_dmamap);
return (ENOBUFS);
}
m = *m_head;
cflags = 0;
tsosegsz = 0;
/* Configure checksum offload and TSO. */
if ((m->m_pkthdr.csum_flags & CSUM_TSO) != 0) {
tsosegsz = (uint32_t)m->m_pkthdr.tso_segsz <<
JME_TD_MSS_SHIFT;
cflags |= JME_TD_TSO;
} else {
if ((m->m_pkthdr.csum_flags & CSUM_IP) != 0)
cflags |= JME_TD_IPCSUM;
if ((m->m_pkthdr.csum_flags & CSUM_TCP) != 0)
cflags |= JME_TD_TCPCSUM;
if ((m->m_pkthdr.csum_flags & CSUM_UDP) != 0)
cflags |= JME_TD_UDPCSUM;
}
/* Configure VLAN. */
if ((m->m_flags & M_VLANTAG) != 0) {
cflags |= (m->m_pkthdr.ether_vtag & JME_TD_VLAN_MASK);
cflags |= JME_TD_VLAN_TAG;
}
desc = &sc->jme_rdata.jme_tx_ring[prod];
desc->flags = htole32(cflags);
desc->buflen = htole32(tsosegsz);
desc->addr_hi = htole32(m->m_pkthdr.len);
desc->addr_lo = 0;
sc->jme_cdata.jme_tx_cnt++;
JME_DESC_INC(prod, JME_TX_RING_CNT);
for (i = 0; i < nsegs; i++) {
desc = &sc->jme_rdata.jme_tx_ring[prod];
desc->flags = htole32(JME_TD_OWN | JME_TD_64BIT);
desc->buflen = htole32(txsegs[i].ds_len);
desc->addr_hi = htole32(JME_ADDR_HI(txsegs[i].ds_addr));
desc->addr_lo = htole32(JME_ADDR_LO(txsegs[i].ds_addr));
sc->jme_cdata.jme_tx_cnt++;
JME_DESC_INC(prod, JME_TX_RING_CNT);
}
/* Update producer index. */
sc->jme_cdata.jme_tx_prod = prod;
/*
* Finally request interrupt and give the first descriptor
* owenership to hardware.
*/
desc = txd->tx_desc;
desc->flags |= htole32(JME_TD_OWN | JME_TD_INTR);
txd->tx_m = m;
txd->tx_ndesc = nsegs + 1;
/* Sync descriptors. */
bus_dmamap_sync(sc->jme_cdata.jme_tx_tag, txd->tx_dmamap,
BUS_DMASYNC_PREWRITE);
bus_dmamap_sync(sc->jme_cdata.jme_tx_ring_tag,
sc->jme_cdata.jme_tx_ring_map,
BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
return (0);
}
static void
jme_start(struct ifnet *ifp)
{
struct jme_softc *sc;
sc = ifp->if_softc;
JME_LOCK(sc);
jme_start_locked(ifp);
JME_UNLOCK(sc);
}
static void
jme_start_locked(struct ifnet *ifp)
{
struct jme_softc *sc;
struct mbuf *m_head;
int enq;
sc = ifp->if_softc;
JME_LOCK_ASSERT(sc);
if (sc->jme_cdata.jme_tx_cnt >= JME_TX_DESC_HIWAT)
jme_txeof(sc);
if ((ifp->if_drv_flags & (IFF_DRV_RUNNING | IFF_DRV_OACTIVE)) !=
IFF_DRV_RUNNING || (sc->jme_flags & JME_FLAG_LINK) == 0)
return;
for (enq = 0; !IFQ_DRV_IS_EMPTY(&ifp->if_snd); ) {
IFQ_DRV_DEQUEUE(&ifp->if_snd, m_head);
if (m_head == NULL)
break;
/*
* Pack the data into the transmit ring. If we
* don't have room, set the OACTIVE flag and wait
* for the NIC to drain the ring.
*/
if (jme_encap(sc, &m_head)) {
if (m_head == NULL)
break;
IFQ_DRV_PREPEND(&ifp->if_snd, m_head);
ifp->if_drv_flags |= IFF_DRV_OACTIVE;
break;
}
enq++;
/*
* If there's a BPF listener, bounce a copy of this frame
* to him.
*/
ETHER_BPF_MTAP(ifp, m_head);
}
if (enq > 0) {
/*
* Reading TXCSR takes very long time under heavy load
* so cache TXCSR value and writes the ORed value with
* the kick command to the TXCSR. This saves one register
* access cycle.
*/
CSR_WRITE_4(sc, JME_TXCSR, sc->jme_txcsr | TXCSR_TX_ENB |
TXCSR_TXQ_N_START(TXCSR_TXQ0));
/* Set a timeout in case the chip goes out to lunch. */
sc->jme_watchdog_timer = JME_TX_TIMEOUT;
}
}
static void
jme_watchdog(struct jme_softc *sc)
{
struct ifnet *ifp;
JME_LOCK_ASSERT(sc);
if (sc->jme_watchdog_timer == 0 || --sc->jme_watchdog_timer)
return;
ifp = sc->jme_ifp;
if ((sc->jme_flags & JME_FLAG_LINK) == 0) {
if_printf(sc->jme_ifp, "watchdog timeout (missed link)\n");
ifp->if_oerrors++;
ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
jme_init_locked(sc);
return;
}
jme_txeof(sc);
if (sc->jme_cdata.jme_tx_cnt == 0) {
if_printf(sc->jme_ifp,
"watchdog timeout (missed Tx interrupts) -- recovering\n");
if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
jme_start_locked(ifp);
return;
}
if_printf(sc->jme_ifp, "watchdog timeout\n");
ifp->if_oerrors++;
ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
jme_init_locked(sc);
if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
jme_start_locked(ifp);
}
static int
jme_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
{
struct jme_softc *sc;
struct ifreq *ifr;
struct mii_data *mii;
uint32_t reg;
int error, mask;
sc = ifp->if_softc;
ifr = (struct ifreq *)data;
error = 0;
switch (cmd) {
case SIOCSIFMTU:
if (ifr->ifr_mtu < ETHERMIN || ifr->ifr_mtu > JME_JUMBO_MTU ||
((sc->jme_flags & JME_FLAG_NOJUMBO) != 0 &&
ifr->ifr_mtu > JME_MAX_MTU)) {
error = EINVAL;
break;
}
if (ifp->if_mtu != ifr->ifr_mtu) {
/*
* No special configuration is required when interface
* MTU is changed but availability of TSO/Tx checksum
* offload should be chcked against new MTU size as
* FIFO size is just 2K.
*/
JME_LOCK(sc);
if (ifr->ifr_mtu >= JME_TX_FIFO_SIZE) {
ifp->if_capenable &=
~(IFCAP_TXCSUM | IFCAP_TSO4);
ifp->if_hwassist &=
~(JME_CSUM_FEATURES | CSUM_TSO);
VLAN_CAPABILITIES(ifp);
}
ifp->if_mtu = ifr->ifr_mtu;
if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) {
ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
jme_init_locked(sc);
}
JME_UNLOCK(sc);
}
break;
case SIOCSIFFLAGS:
JME_LOCK(sc);
if ((ifp->if_flags & IFF_UP) != 0) {
if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) {
if (((ifp->if_flags ^ sc->jme_if_flags)
& (IFF_PROMISC | IFF_ALLMULTI)) != 0)
jme_set_filter(sc);
} else {
if ((sc->jme_flags & JME_FLAG_DETACH) == 0)
jme_init_locked(sc);
}
} else {
if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0)
jme_stop(sc);
}
sc->jme_if_flags = ifp->if_flags;
JME_UNLOCK(sc);
break;
case SIOCADDMULTI:
case SIOCDELMULTI:
JME_LOCK(sc);
if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0)
jme_set_filter(sc);
JME_UNLOCK(sc);
break;
case SIOCSIFMEDIA:
case SIOCGIFMEDIA:
mii = device_get_softc(sc->jme_miibus);
error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, cmd);
break;
case SIOCSIFCAP:
JME_LOCK(sc);
mask = ifr->ifr_reqcap ^ ifp->if_capenable;
if ((mask & IFCAP_TXCSUM) != 0 &&
ifp->if_mtu < JME_TX_FIFO_SIZE) {
if ((IFCAP_TXCSUM & ifp->if_capabilities) != 0) {
ifp->if_capenable ^= IFCAP_TXCSUM;
if ((IFCAP_TXCSUM & ifp->if_capenable) != 0)
ifp->if_hwassist |= JME_CSUM_FEATURES;
else
ifp->if_hwassist &= ~JME_CSUM_FEATURES;
}
}
if ((mask & IFCAP_RXCSUM) != 0 &&
(IFCAP_RXCSUM & ifp->if_capabilities) != 0) {
ifp->if_capenable ^= IFCAP_RXCSUM;
reg = CSR_READ_4(sc, JME_RXMAC);
reg &= ~RXMAC_CSUM_ENB;
if ((ifp->if_capenable & IFCAP_RXCSUM) != 0)
reg |= RXMAC_CSUM_ENB;
CSR_WRITE_4(sc, JME_RXMAC, reg);
}
if ((mask & IFCAP_TSO4) != 0 &&
ifp->if_mtu < JME_TX_FIFO_SIZE) {
if ((IFCAP_TSO4 & ifp->if_capabilities) != 0) {
ifp->if_capenable ^= IFCAP_TSO4;
if ((IFCAP_TSO4 & ifp->if_capenable) != 0)
ifp->if_hwassist |= CSUM_TSO;
else
ifp->if_hwassist &= ~CSUM_TSO;
}
}
if ((mask & IFCAP_WOL_MAGIC) != 0 &&
(IFCAP_WOL_MAGIC & ifp->if_capabilities) != 0)
ifp->if_capenable ^= IFCAP_WOL_MAGIC;
if ((mask & IFCAP_VLAN_HWCSUM) != 0 &&
(ifp->if_capabilities & IFCAP_VLAN_HWCSUM) != 0)
ifp->if_capenable ^= IFCAP_VLAN_HWCSUM;
if ((mask & IFCAP_VLAN_HWTSO) != 0 &&
(ifp->if_capabilities & IFCAP_VLAN_HWTSO) != 0)
ifp->if_capenable ^= IFCAP_VLAN_HWTSO;
if ((mask & IFCAP_VLAN_HWTAGGING) != 0 &&
(IFCAP_VLAN_HWTAGGING & ifp->if_capabilities) != 0) {
ifp->if_capenable ^= IFCAP_VLAN_HWTAGGING;
jme_set_vlan(sc);
}
JME_UNLOCK(sc);
VLAN_CAPABILITIES(ifp);
break;
default:
error = ether_ioctl(ifp, cmd, data);
break;
}
return (error);
}
static void
jme_mac_config(struct jme_softc *sc)
{
struct mii_data *mii;
uint32_t ghc, gpreg, rxmac, txmac, txpause;
uint32_t txclk;
JME_LOCK_ASSERT(sc);
mii = device_get_softc(sc->jme_miibus);
CSR_WRITE_4(sc, JME_GHC, GHC_RESET);
DELAY(10);
CSR_WRITE_4(sc, JME_GHC, 0);
ghc = 0;
txclk = 0;
rxmac = CSR_READ_4(sc, JME_RXMAC);
rxmac &= ~RXMAC_FC_ENB;
txmac = CSR_READ_4(sc, JME_TXMAC);
txmac &= ~(TXMAC_CARRIER_EXT | TXMAC_FRAME_BURST);
txpause = CSR_READ_4(sc, JME_TXPFC);
txpause &= ~TXPFC_PAUSE_ENB;
if ((IFM_OPTIONS(mii->mii_media_active) & IFM_FDX) != 0) {
ghc |= GHC_FULL_DUPLEX;
rxmac &= ~RXMAC_COLL_DET_ENB;
txmac &= ~(TXMAC_COLL_ENB | TXMAC_CARRIER_SENSE |
TXMAC_BACKOFF | TXMAC_CARRIER_EXT |
TXMAC_FRAME_BURST);
if ((IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_TXPAUSE) != 0)
txpause |= TXPFC_PAUSE_ENB;
if ((IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_RXPAUSE) != 0)
rxmac |= RXMAC_FC_ENB;
/* Disable retry transmit timer/retry limit. */
CSR_WRITE_4(sc, JME_TXTRHD, CSR_READ_4(sc, JME_TXTRHD) &
~(TXTRHD_RT_PERIOD_ENB | TXTRHD_RT_LIMIT_ENB));
} else {
rxmac |= RXMAC_COLL_DET_ENB;
txmac |= TXMAC_COLL_ENB | TXMAC_CARRIER_SENSE | TXMAC_BACKOFF;
/* Enable retry transmit timer/retry limit. */
CSR_WRITE_4(sc, JME_TXTRHD, CSR_READ_4(sc, JME_TXTRHD) |
TXTRHD_RT_PERIOD_ENB | TXTRHD_RT_LIMIT_ENB);
}
/* Reprogram Tx/Rx MACs with resolved speed/duplex. */
switch (IFM_SUBTYPE(mii->mii_media_active)) {
case IFM_10_T:
ghc |= GHC_SPEED_10;
txclk |= GHC_TX_OFFLD_CLK_100 | GHC_TX_MAC_CLK_100;
break;
case IFM_100_TX:
ghc |= GHC_SPEED_100;
txclk |= GHC_TX_OFFLD_CLK_100 | GHC_TX_MAC_CLK_100;
break;
case IFM_1000_T:
if ((sc->jme_flags & JME_FLAG_FASTETH) != 0)
break;
ghc |= GHC_SPEED_1000;
txclk |= GHC_TX_OFFLD_CLK_1000 | GHC_TX_MAC_CLK_1000;
if ((IFM_OPTIONS(mii->mii_media_active) & IFM_FDX) == 0)
txmac |= TXMAC_CARRIER_EXT | TXMAC_FRAME_BURST;
break;
default:
break;
}
if (sc->jme_rev == DEVICEID_JMC250 &&
sc->jme_chip_rev == DEVICEREVID_JMC250_A2) {
/*
* Workaround occasional packet loss issue of JMC250 A2
* when it runs on half-duplex media.
*/
gpreg = CSR_READ_4(sc, JME_GPREG1);
if ((IFM_OPTIONS(mii->mii_media_active) & IFM_FDX) != 0)
gpreg &= ~GPREG1_HDPX_FIX;
else
gpreg |= GPREG1_HDPX_FIX;
CSR_WRITE_4(sc, JME_GPREG1, gpreg);
/* Workaround CRC errors at 100Mbps on JMC250 A2. */
if (IFM_SUBTYPE(mii->mii_media_active) == IFM_100_TX) {
/* Extend interface FIFO depth. */
jme_miibus_writereg(sc->jme_dev, sc->jme_phyaddr,
0x1B, 0x0000);
} else {
/* Select default interface FIFO depth. */
jme_miibus_writereg(sc->jme_dev, sc->jme_phyaddr,
0x1B, 0x0004);
}
}
if ((sc->jme_flags & JME_FLAG_TXCLK) != 0)
ghc |= txclk;
CSR_WRITE_4(sc, JME_GHC, ghc);
CSR_WRITE_4(sc, JME_RXMAC, rxmac);
CSR_WRITE_4(sc, JME_TXMAC, txmac);
CSR_WRITE_4(sc, JME_TXPFC, txpause);
}
static void
jme_link_task(void *arg, int pending)
{
struct jme_softc *sc;
struct mii_data *mii;
struct ifnet *ifp;
struct jme_txdesc *txd;
bus_addr_t paddr;
int i;
sc = (struct jme_softc *)arg;
JME_LOCK(sc);
mii = device_get_softc(sc->jme_miibus);
ifp = sc->jme_ifp;
if (mii == NULL || ifp == NULL ||
(ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) {
JME_UNLOCK(sc);
return;
}
sc->jme_flags &= ~JME_FLAG_LINK;
if ((mii->mii_media_status & IFM_AVALID) != 0) {
switch (IFM_SUBTYPE(mii->mii_media_active)) {
case IFM_10_T:
case IFM_100_TX:
sc->jme_flags |= JME_FLAG_LINK;
break;
case IFM_1000_T:
if ((sc->jme_flags & JME_FLAG_FASTETH) != 0)
break;
sc->jme_flags |= JME_FLAG_LINK;
break;
default:
break;
}
}
/*
* Disabling Rx/Tx MACs have a side-effect of resetting
* JME_TXNDA/JME_RXNDA register to the first address of
* Tx/Rx descriptor address. So driver should reset its
* internal procucer/consumer pointer and reclaim any
* allocated resources. Note, just saving the value of
* JME_TXNDA and JME_RXNDA registers before stopping MAC
* and restoring JME_TXNDA/JME_RXNDA register is not
* sufficient to make sure correct MAC state because
* stopping MAC operation can take a while and hardware
* might have updated JME_TXNDA/JME_RXNDA registers
* during the stop operation.
*/
/* Block execution of task. */
taskqueue_block(sc->jme_tq);
/* Disable interrupts and stop driver. */
CSR_WRITE_4(sc, JME_INTR_MASK_CLR, JME_INTRS);
ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
callout_stop(&sc->jme_tick_ch);
sc->jme_watchdog_timer = 0;
/* Stop receiver/transmitter. */
jme_stop_rx(sc);
jme_stop_tx(sc);
/* XXX Drain all queued tasks. */
JME_UNLOCK(sc);
taskqueue_drain(sc->jme_tq, &sc->jme_int_task);
JME_LOCK(sc);
if (sc->jme_cdata.jme_rxhead != NULL)
m_freem(sc->jme_cdata.jme_rxhead);
JME_RXCHAIN_RESET(sc);
jme_txeof(sc);
if (sc->jme_cdata.jme_tx_cnt != 0) {
/* Remove queued packets for transmit. */
for (i = 0; i < JME_TX_RING_CNT; i++) {
txd = &sc->jme_cdata.jme_txdesc[i];
if (txd->tx_m != NULL) {
bus_dmamap_sync(
sc->jme_cdata.jme_tx_tag,
txd->tx_dmamap,
BUS_DMASYNC_POSTWRITE);
bus_dmamap_unload(
sc->jme_cdata.jme_tx_tag,
txd->tx_dmamap);
m_freem(txd->tx_m);
txd->tx_m = NULL;
txd->tx_ndesc = 0;
ifp->if_oerrors++;
}
}
}
/*
* Reuse configured Rx descriptors and reset
* producer/consumer index.
*/
sc->jme_cdata.jme_rx_cons = 0;
sc->jme_morework = 0;
jme_init_tx_ring(sc);
/* Initialize shadow status block. */
jme_init_ssb(sc);
/* Program MAC with resolved speed/duplex/flow-control. */
if ((sc->jme_flags & JME_FLAG_LINK) != 0) {
jme_mac_config(sc);
jme_stats_clear(sc);
CSR_WRITE_4(sc, JME_RXCSR, sc->jme_rxcsr);
CSR_WRITE_4(sc, JME_TXCSR, sc->jme_txcsr);
/* Set Tx ring address to the hardware. */
paddr = JME_TX_RING_ADDR(sc, 0);
CSR_WRITE_4(sc, JME_TXDBA_HI, JME_ADDR_HI(paddr));
CSR_WRITE_4(sc, JME_TXDBA_LO, JME_ADDR_LO(paddr));
/* Set Rx ring address to the hardware. */
paddr = JME_RX_RING_ADDR(sc, 0);
CSR_WRITE_4(sc, JME_RXDBA_HI, JME_ADDR_HI(paddr));
CSR_WRITE_4(sc, JME_RXDBA_LO, JME_ADDR_LO(paddr));
/* Restart receiver/transmitter. */
CSR_WRITE_4(sc, JME_RXCSR, sc->jme_rxcsr | RXCSR_RX_ENB |
RXCSR_RXQ_START);
CSR_WRITE_4(sc, JME_TXCSR, sc->jme_txcsr | TXCSR_TX_ENB);
/* Lastly enable TX/RX clock. */
if ((sc->jme_flags & JME_FLAG_TXCLK) != 0)
CSR_WRITE_4(sc, JME_GHC,
CSR_READ_4(sc, JME_GHC) & ~GHC_TX_MAC_CLK_DIS);
if ((sc->jme_flags & JME_FLAG_RXCLK) != 0)
CSR_WRITE_4(sc, JME_GPREG1,
CSR_READ_4(sc, JME_GPREG1) & ~GPREG1_RX_MAC_CLK_DIS);
}
ifp->if_drv_flags |= IFF_DRV_RUNNING;
ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
callout_reset(&sc->jme_tick_ch, hz, jme_tick, sc);
/* Unblock execution of task. */
taskqueue_unblock(sc->jme_tq);
/* Reenable interrupts. */
CSR_WRITE_4(sc, JME_INTR_MASK_SET, JME_INTRS);
JME_UNLOCK(sc);
}
static int
jme_intr(void *arg)
{
struct jme_softc *sc;
uint32_t status;
sc = (struct jme_softc *)arg;
status = CSR_READ_4(sc, JME_INTR_REQ_STATUS);
if (status == 0 || status == 0xFFFFFFFF)
return (FILTER_STRAY);
/* Disable interrupts. */
CSR_WRITE_4(sc, JME_INTR_MASK_CLR, JME_INTRS);
taskqueue_enqueue(sc->jme_tq, &sc->jme_int_task);
return (FILTER_HANDLED);
}
static void
jme_int_task(void *arg, int pending)
{
struct jme_softc *sc;
struct ifnet *ifp;
uint32_t status;
int more;
sc = (struct jme_softc *)arg;
ifp = sc->jme_ifp;
JME_LOCK(sc);
status = CSR_READ_4(sc, JME_INTR_STATUS);
if (sc->jme_morework != 0) {
sc->jme_morework = 0;
status |= INTR_RXQ_COAL | INTR_RXQ_COAL_TO;
}
if ((status & JME_INTRS) == 0 || status == 0xFFFFFFFF)
goto done;
/* Reset PCC counter/timer and Ack interrupts. */
status &= ~(INTR_TXQ_COMP | INTR_RXQ_COMP);
if ((status & (INTR_TXQ_COAL | INTR_TXQ_COAL_TO)) != 0)
status |= INTR_TXQ_COAL | INTR_TXQ_COAL_TO | INTR_TXQ_COMP;
if ((status & (INTR_RXQ_COAL | INTR_RXQ_COAL_TO)) != 0)
status |= INTR_RXQ_COAL | INTR_RXQ_COAL_TO | INTR_RXQ_COMP;
CSR_WRITE_4(sc, JME_INTR_STATUS, status);
more = 0;
if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) {
if ((status & (INTR_RXQ_COAL | INTR_RXQ_COAL_TO)) != 0) {
more = jme_rxintr(sc, sc->jme_process_limit);
if (more != 0)
sc->jme_morework = 1;
}
if ((status & INTR_RXQ_DESC_EMPTY) != 0) {
/*
* Notify hardware availability of new Rx
* buffers.
* Reading RXCSR takes very long time under
* heavy load so cache RXCSR value and writes
* the ORed value with the kick command to
* the RXCSR. This saves one register access
* cycle.
*/
CSR_WRITE_4(sc, JME_RXCSR, sc->jme_rxcsr |
RXCSR_RX_ENB | RXCSR_RXQ_START);
}
if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
jme_start_locked(ifp);
}
if (more != 0 || (CSR_READ_4(sc, JME_INTR_STATUS) & JME_INTRS) != 0) {
taskqueue_enqueue(sc->jme_tq, &sc->jme_int_task);
JME_UNLOCK(sc);
return;
}
done:
JME_UNLOCK(sc);
/* Reenable interrupts. */
CSR_WRITE_4(sc, JME_INTR_MASK_SET, JME_INTRS);
}
static void
jme_txeof(struct jme_softc *sc)
{
struct ifnet *ifp;
struct jme_txdesc *txd;
uint32_t status;
int cons, nsegs;
JME_LOCK_ASSERT(sc);
ifp = sc->jme_ifp;
cons = sc->jme_cdata.jme_tx_cons;
if (cons == sc->jme_cdata.jme_tx_prod)
return;
bus_dmamap_sync(sc->jme_cdata.jme_tx_ring_tag,
sc->jme_cdata.jme_tx_ring_map,
BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
/*
* Go through our Tx list and free mbufs for those
* frames which have been transmitted.
*/
for (; cons != sc->jme_cdata.jme_tx_prod;) {
txd = &sc->jme_cdata.jme_txdesc[cons];
status = le32toh(txd->tx_desc->flags);
if ((status & JME_TD_OWN) == JME_TD_OWN)
break;
if ((status & (JME_TD_TMOUT | JME_TD_RETRY_EXP)) != 0)
ifp->if_oerrors++;
else {
ifp->if_opackets++;
if ((status & JME_TD_COLLISION) != 0)
ifp->if_collisions +=
le32toh(txd->tx_desc->buflen) &
JME_TD_BUF_LEN_MASK;
}
/*
* Only the first descriptor of multi-descriptor
* transmission is updated so driver have to skip entire
* chained buffers for the transmiited frame. In other
* words, JME_TD_OWN bit is valid only at the first
* descriptor of a multi-descriptor transmission.
*/
for (nsegs = 0; nsegs < txd->tx_ndesc; nsegs++) {
sc->jme_rdata.jme_tx_ring[cons].flags = 0;
JME_DESC_INC(cons, JME_TX_RING_CNT);
}
/* Reclaim transferred mbufs. */
bus_dmamap_sync(sc->jme_cdata.jme_tx_tag, txd->tx_dmamap,
BUS_DMASYNC_POSTWRITE);
bus_dmamap_unload(sc->jme_cdata.jme_tx_tag, txd->tx_dmamap);
KASSERT(txd->tx_m != NULL,
("%s: freeing NULL mbuf!\n", __func__));
m_freem(txd->tx_m);
txd->tx_m = NULL;
sc->jme_cdata.jme_tx_cnt -= txd->tx_ndesc;
KASSERT(sc->jme_cdata.jme_tx_cnt >= 0,
("%s: Active Tx desc counter was garbled\n", __func__));
txd->tx_ndesc = 0;
ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
}
sc->jme_cdata.jme_tx_cons = cons;
/* Unarm watchog timer when there is no pending descriptors in queue. */
if (sc->jme_cdata.jme_tx_cnt == 0)
sc->jme_watchdog_timer = 0;
bus_dmamap_sync(sc->jme_cdata.jme_tx_ring_tag,
sc->jme_cdata.jme_tx_ring_map,
BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
}
static __inline void
jme_discard_rxbuf(struct jme_softc *sc, int cons)
{
struct jme_desc *desc;
desc = &sc->jme_rdata.jme_rx_ring[cons];
desc->flags = htole32(JME_RD_OWN | JME_RD_INTR | JME_RD_64BIT);
desc->buflen = htole32(MCLBYTES);
}
/* Receive a frame. */
static void
jme_rxeof(struct jme_softc *sc)
{
struct ifnet *ifp;
struct jme_desc *desc;
struct jme_rxdesc *rxd;
struct mbuf *mp, *m;
uint32_t flags, status;
int cons, count, nsegs;
JME_LOCK_ASSERT(sc);
ifp = sc->jme_ifp;
cons = sc->jme_cdata.jme_rx_cons;
desc = &sc->jme_rdata.jme_rx_ring[cons];
flags = le32toh(desc->flags);
status = le32toh(desc->buflen);
nsegs = JME_RX_NSEGS(status);
sc->jme_cdata.jme_rxlen = JME_RX_BYTES(status) - JME_RX_PAD_BYTES;
if ((status & JME_RX_ERR_STAT) != 0) {
ifp->if_ierrors++;
jme_discard_rxbuf(sc, sc->jme_cdata.jme_rx_cons);
#ifdef JME_SHOW_ERRORS
device_printf(sc->jme_dev, "%s : receive error = 0x%b\n",
__func__, JME_RX_ERR(status), JME_RX_ERR_BITS);
#endif
sc->jme_cdata.jme_rx_cons += nsegs;
sc->jme_cdata.jme_rx_cons %= JME_RX_RING_CNT;
return;
}
for (count = 0; count < nsegs; count++,
JME_DESC_INC(cons, JME_RX_RING_CNT)) {
rxd = &sc->jme_cdata.jme_rxdesc[cons];
mp = rxd->rx_m;
/* Add a new receive buffer to the ring. */
if (jme_newbuf(sc, rxd) != 0) {
ifp->if_iqdrops++;
/* Reuse buffer. */
for (; count < nsegs; count++) {
jme_discard_rxbuf(sc, cons);
JME_DESC_INC(cons, JME_RX_RING_CNT);
}
if (sc->jme_cdata.jme_rxhead != NULL) {
m_freem(sc->jme_cdata.jme_rxhead);
JME_RXCHAIN_RESET(sc);
}
break;
}
/*
* Assume we've received a full sized frame.
* Actual size is fixed when we encounter the end of
* multi-segmented frame.
*/
mp->m_len = MCLBYTES;
/* Chain received mbufs. */
if (sc->jme_cdata.jme_rxhead == NULL) {
sc->jme_cdata.jme_rxhead = mp;
sc->jme_cdata.jme_rxtail = mp;
} else {
/*
* Receive processor can receive a maximum frame
* size of 65535 bytes.
*/
mp->m_flags &= ~M_PKTHDR;
sc->jme_cdata.jme_rxtail->m_next = mp;
sc->jme_cdata.jme_rxtail = mp;
}
if (count == nsegs - 1) {
/* Last desc. for this frame. */
m = sc->jme_cdata.jme_rxhead;
m->m_flags |= M_PKTHDR;
m->m_pkthdr.len = sc->jme_cdata.jme_rxlen;
if (nsegs > 1) {
/* Set first mbuf size. */
m->m_len = MCLBYTES - JME_RX_PAD_BYTES;
/* Set last mbuf size. */
mp->m_len = sc->jme_cdata.jme_rxlen -
((MCLBYTES - JME_RX_PAD_BYTES) +
(MCLBYTES * (nsegs - 2)));
} else
m->m_len = sc->jme_cdata.jme_rxlen;
m->m_pkthdr.rcvif = ifp;
/*
* Account for 10bytes auto padding which is used
* to align IP header on 32bit boundary. Also note,
* CRC bytes is automatically removed by the
* hardware.
*/
m->m_data += JME_RX_PAD_BYTES;
/* Set checksum information. */
if ((ifp->if_capenable & IFCAP_RXCSUM) != 0 &&
(flags & JME_RD_IPV4) != 0) {
m->m_pkthdr.csum_flags |= CSUM_IP_CHECKED;
if ((flags & JME_RD_IPCSUM) != 0)
m->m_pkthdr.csum_flags |= CSUM_IP_VALID;
if (((flags & JME_RD_MORE_FRAG) == 0) &&
((flags & (JME_RD_TCP | JME_RD_TCPCSUM)) ==
(JME_RD_TCP | JME_RD_TCPCSUM) ||
(flags & (JME_RD_UDP | JME_RD_UDPCSUM)) ==
(JME_RD_UDP | JME_RD_UDPCSUM))) {
m->m_pkthdr.csum_flags |=
CSUM_DATA_VALID | CSUM_PSEUDO_HDR;
m->m_pkthdr.csum_data = 0xffff;
}
}
/* Check for VLAN tagged packets. */
if ((ifp->if_capenable & IFCAP_VLAN_HWTAGGING) != 0 &&
(flags & JME_RD_VLAN_TAG) != 0) {
m->m_pkthdr.ether_vtag =
flags & JME_RD_VLAN_MASK;
m->m_flags |= M_VLANTAG;
}
ifp->if_ipackets++;
/* Pass it on. */
JME_UNLOCK(sc);
(*ifp->if_input)(ifp, m);
JME_LOCK(sc);
/* Reset mbuf chains. */
JME_RXCHAIN_RESET(sc);
}
}
sc->jme_cdata.jme_rx_cons += nsegs;
sc->jme_cdata.jme_rx_cons %= JME_RX_RING_CNT;
}
static int
jme_rxintr(struct jme_softc *sc, int count)
{
struct jme_desc *desc;
int nsegs, prog, pktlen;
bus_dmamap_sync(sc->jme_cdata.jme_rx_ring_tag,
sc->jme_cdata.jme_rx_ring_map,
BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
for (prog = 0; count > 0; prog++) {
desc = &sc->jme_rdata.jme_rx_ring[sc->jme_cdata.jme_rx_cons];
if ((le32toh(desc->flags) & JME_RD_OWN) == JME_RD_OWN)
break;
if ((le32toh(desc->buflen) & JME_RD_VALID) == 0)
break;
nsegs = JME_RX_NSEGS(le32toh(desc->buflen));
/*
* Check number of segments against received bytes.
* Non-matching value would indicate that hardware
* is still trying to update Rx descriptors. I'm not
* sure whether this check is needed.
*/
pktlen = JME_RX_BYTES(le32toh(desc->buflen));
if (nsegs != ((pktlen + (MCLBYTES - 1)) / MCLBYTES))
break;
prog++;
/* Received a frame. */
jme_rxeof(sc);
count -= nsegs;
}
if (prog > 0)
bus_dmamap_sync(sc->jme_cdata.jme_rx_ring_tag,
sc->jme_cdata.jme_rx_ring_map,
BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
return (count > 0 ? 0 : EAGAIN);
}
static void
jme_tick(void *arg)
{
struct jme_softc *sc;
struct mii_data *mii;
sc = (struct jme_softc *)arg;
JME_LOCK_ASSERT(sc);
mii = device_get_softc(sc->jme_miibus);
mii_tick(mii);
/*
* Reclaim Tx buffers that have been completed. It's not
* needed here but it would release allocated mbuf chains
* faster and limit the maximum delay to a hz.
*/
jme_txeof(sc);
jme_stats_update(sc);
jme_watchdog(sc);
callout_reset(&sc->jme_tick_ch, hz, jme_tick, sc);
}
static void
jme_reset(struct jme_softc *sc)
{
uint32_t ghc, gpreg;
/* Stop receiver, transmitter. */
jme_stop_rx(sc);
jme_stop_tx(sc);
/* Reset controller. */
CSR_WRITE_4(sc, JME_GHC, GHC_RESET);
CSR_READ_4(sc, JME_GHC);
DELAY(10);
/*
* Workaround Rx FIFO overruns seen under certain conditions.
* Explicitly synchorize TX/RX clock. TX/RX clock should be
* enabled only after enabling TX/RX MACs.
*/
if ((sc->jme_flags & (JME_FLAG_TXCLK | JME_FLAG_RXCLK)) != 0) {
/* Disable TX clock. */
CSR_WRITE_4(sc, JME_GHC, GHC_RESET | GHC_TX_MAC_CLK_DIS);
/* Disable RX clock. */
gpreg = CSR_READ_4(sc, JME_GPREG1);
CSR_WRITE_4(sc, JME_GPREG1, gpreg | GPREG1_RX_MAC_CLK_DIS);
gpreg = CSR_READ_4(sc, JME_GPREG1);
/* De-assert RESET but still disable TX clock. */
CSR_WRITE_4(sc, JME_GHC, GHC_TX_MAC_CLK_DIS);
ghc = CSR_READ_4(sc, JME_GHC);
/* Enable TX clock. */
CSR_WRITE_4(sc, JME_GHC, ghc & ~GHC_TX_MAC_CLK_DIS);
/* Enable RX clock. */
CSR_WRITE_4(sc, JME_GPREG1, gpreg & ~GPREG1_RX_MAC_CLK_DIS);
CSR_READ_4(sc, JME_GPREG1);
/* Disable TX/RX clock again. */
CSR_WRITE_4(sc, JME_GHC, GHC_TX_MAC_CLK_DIS);
CSR_WRITE_4(sc, JME_GPREG1, gpreg | GPREG1_RX_MAC_CLK_DIS);
} else
CSR_WRITE_4(sc, JME_GHC, 0);
CSR_READ_4(sc, JME_GHC);
DELAY(10);
}
static void
jme_init(void *xsc)
{
struct jme_softc *sc;
sc = (struct jme_softc *)xsc;
JME_LOCK(sc);
jme_init_locked(sc);
JME_UNLOCK(sc);
}
static void
jme_init_locked(struct jme_softc *sc)
{
struct ifnet *ifp;
struct mii_data *mii;
bus_addr_t paddr;
uint32_t reg;
int error;
JME_LOCK_ASSERT(sc);
ifp = sc->jme_ifp;
mii = device_get_softc(sc->jme_miibus);
if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0)
return;
/*
* Cancel any pending I/O.
*/
jme_stop(sc);
/*
* Reset the chip to a known state.
*/
jme_reset(sc);
/* Init descriptors. */
error = jme_init_rx_ring(sc);
if (error != 0) {
device_printf(sc->jme_dev,
"%s: initialization failed: no memory for Rx buffers.\n",
__func__);
jme_stop(sc);
return;
}
jme_init_tx_ring(sc);
/* Initialize shadow status block. */
jme_init_ssb(sc);
/* Reprogram the station address. */
jme_set_macaddr(sc, IF_LLADDR(sc->jme_ifp));
/*
* Configure Tx queue.
* Tx priority queue weight value : 0
* Tx FIFO threshold for processing next packet : 16QW
* Maximum Tx DMA length : 512
* Allow Tx DMA burst.
*/
sc->jme_txcsr = TXCSR_TXQ_N_SEL(TXCSR_TXQ0);
sc->jme_txcsr |= TXCSR_TXQ_WEIGHT(TXCSR_TXQ_WEIGHT_MIN);
sc->jme_txcsr |= TXCSR_FIFO_THRESH_16QW;
sc->jme_txcsr |= sc->jme_tx_dma_size;
sc->jme_txcsr |= TXCSR_DMA_BURST;
CSR_WRITE_4(sc, JME_TXCSR, sc->jme_txcsr);
/* Set Tx descriptor counter. */
CSR_WRITE_4(sc, JME_TXQDC, JME_TX_RING_CNT);
/* Set Tx ring address to the hardware. */
paddr = JME_TX_RING_ADDR(sc, 0);
CSR_WRITE_4(sc, JME_TXDBA_HI, JME_ADDR_HI(paddr));
CSR_WRITE_4(sc, JME_TXDBA_LO, JME_ADDR_LO(paddr));
/* Configure TxMAC parameters. */
reg = TXMAC_IFG1_DEFAULT | TXMAC_IFG2_DEFAULT | TXMAC_IFG_ENB;
reg |= TXMAC_THRESH_1_PKT;
reg |= TXMAC_CRC_ENB | TXMAC_PAD_ENB;
CSR_WRITE_4(sc, JME_TXMAC, reg);
/*
* Configure Rx queue.
* FIFO full threshold for transmitting Tx pause packet : 128T
* FIFO threshold for processing next packet : 128QW
* Rx queue 0 select
* Max Rx DMA length : 128
* Rx descriptor retry : 32
* Rx descriptor retry time gap : 256ns
* Don't receive runt/bad frame.
*/
sc->jme_rxcsr = RXCSR_FIFO_FTHRESH_128T;
/*
* Since Rx FIFO size is 4K bytes, receiving frames larger
* than 4K bytes will suffer from Rx FIFO overruns. So
* decrease FIFO threshold to reduce the FIFO overruns for
* frames larger than 4000 bytes.
* For best performance of standard MTU sized frames use
* maximum allowable FIFO threshold, 128QW. Note these do
* not hold on chip full mask verion >=2. For these
* controllers 64QW and 128QW are not valid value.
*/
if (CHIPMODE_REVFM(sc->jme_chip_rev) >= 2)
sc->jme_rxcsr |= RXCSR_FIFO_THRESH_16QW;
else {
if ((ifp->if_mtu + ETHER_HDR_LEN + ETHER_VLAN_ENCAP_LEN +
ETHER_CRC_LEN) > JME_RX_FIFO_SIZE)
sc->jme_rxcsr |= RXCSR_FIFO_THRESH_16QW;
else
sc->jme_rxcsr |= RXCSR_FIFO_THRESH_128QW;
}
sc->jme_rxcsr |= sc->jme_rx_dma_size | RXCSR_RXQ_N_SEL(RXCSR_RXQ0);
sc->jme_rxcsr |= RXCSR_DESC_RT_CNT(RXCSR_DESC_RT_CNT_DEFAULT);
sc->jme_rxcsr |= RXCSR_DESC_RT_GAP_256 & RXCSR_DESC_RT_GAP_MASK;
CSR_WRITE_4(sc, JME_RXCSR, sc->jme_rxcsr);
/* Set Rx descriptor counter. */
CSR_WRITE_4(sc, JME_RXQDC, JME_RX_RING_CNT);
/* Set Rx ring address to the hardware. */
paddr = JME_RX_RING_ADDR(sc, 0);
CSR_WRITE_4(sc, JME_RXDBA_HI, JME_ADDR_HI(paddr));
CSR_WRITE_4(sc, JME_RXDBA_LO, JME_ADDR_LO(paddr));
/* Clear receive filter. */
CSR_WRITE_4(sc, JME_RXMAC, 0);
/* Set up the receive filter. */
jme_set_filter(sc);
jme_set_vlan(sc);
/*
* Disable all WOL bits as WOL can interfere normal Rx
* operation. Also clear WOL detection status bits.
*/
reg = CSR_READ_4(sc, JME_PMCS);
reg &= ~PMCS_WOL_ENB_MASK;
CSR_WRITE_4(sc, JME_PMCS, reg);
reg = CSR_READ_4(sc, JME_RXMAC);
/*
* Pad 10bytes right before received frame. This will greatly
* help Rx performance on strict-alignment architectures as
* it does not need to copy the frame to align the payload.
*/
reg |= RXMAC_PAD_10BYTES;
if ((ifp->if_capenable & IFCAP_RXCSUM) != 0)
reg |= RXMAC_CSUM_ENB;
CSR_WRITE_4(sc, JME_RXMAC, reg);
/* Configure general purpose reg0 */
reg = CSR_READ_4(sc, JME_GPREG0);
reg &= ~GPREG0_PCC_UNIT_MASK;
/* Set PCC timer resolution to micro-seconds unit. */
reg |= GPREG0_PCC_UNIT_US;
/*
* Disable all shadow register posting as we have to read
* JME_INTR_STATUS register in jme_int_task. Also it seems
* that it's hard to synchronize interrupt status between
* hardware and software with shadow posting due to
* requirements of bus_dmamap_sync(9).
*/
reg |= GPREG0_SH_POST_DW7_DIS | GPREG0_SH_POST_DW6_DIS |
GPREG0_SH_POST_DW5_DIS | GPREG0_SH_POST_DW4_DIS |
GPREG0_SH_POST_DW3_DIS | GPREG0_SH_POST_DW2_DIS |
GPREG0_SH_POST_DW1_DIS | GPREG0_SH_POST_DW0_DIS;
/* Disable posting of DW0. */
reg &= ~GPREG0_POST_DW0_ENB;
/* Clear PME message. */
reg &= ~GPREG0_PME_ENB;
/* Set PHY address. */
reg &= ~GPREG0_PHY_ADDR_MASK;
reg |= sc->jme_phyaddr;
CSR_WRITE_4(sc, JME_GPREG0, reg);
/* Configure Tx queue 0 packet completion coalescing. */
reg = (sc->jme_tx_coal_to << PCCTX_COAL_TO_SHIFT) &
PCCTX_COAL_TO_MASK;
reg |= (sc->jme_tx_coal_pkt << PCCTX_COAL_PKT_SHIFT) &
PCCTX_COAL_PKT_MASK;
reg |= PCCTX_COAL_TXQ0;
CSR_WRITE_4(sc, JME_PCCTX, reg);
/* Configure Rx queue 0 packet completion coalescing. */
reg = (sc->jme_rx_coal_to << PCCRX_COAL_TO_SHIFT) &
PCCRX_COAL_TO_MASK;
reg |= (sc->jme_rx_coal_pkt << PCCRX_COAL_PKT_SHIFT) &
PCCRX_COAL_PKT_MASK;
CSR_WRITE_4(sc, JME_PCCRX0, reg);
/*
* Configure PCD(Packet Completion Deferring). It seems PCD
* generates an interrupt when the time interval between two
* back-to-back incoming/outgoing packet is long enough for
* it to reach its timer value 0. The arrival of new packets
* after timer has started causes the PCD timer to restart.
* Unfortunately, it's not clear how PCD is useful at this
* moment, so just use the same of PCC parameters.
*/
if ((sc->jme_flags & JME_FLAG_PCCPCD) != 0) {
sc->jme_rx_pcd_to = sc->jme_rx_coal_to;
if (sc->jme_rx_coal_to > PCDRX_TO_MAX)
sc->jme_rx_pcd_to = PCDRX_TO_MAX;
sc->jme_tx_pcd_to = sc->jme_tx_coal_to;
if (sc->jme_tx_coal_to > PCDTX_TO_MAX)
sc->jme_tx_pcd_to = PCDTX_TO_MAX;
reg = sc->jme_rx_pcd_to << PCDRX0_TO_THROTTLE_SHIFT;
reg |= sc->jme_rx_pcd_to << PCDRX0_TO_SHIFT;
CSR_WRITE_4(sc, PCDRX_REG(0), reg);
reg = sc->jme_tx_pcd_to << PCDTX_TO_THROTTLE_SHIFT;
reg |= sc->jme_tx_pcd_to << PCDTX_TO_SHIFT;
CSR_WRITE_4(sc, JME_PCDTX, reg);
}
/* Configure shadow status block but don't enable posting. */
paddr = sc->jme_rdata.jme_ssb_block_paddr;
CSR_WRITE_4(sc, JME_SHBASE_ADDR_HI, JME_ADDR_HI(paddr));
CSR_WRITE_4(sc, JME_SHBASE_ADDR_LO, JME_ADDR_LO(paddr));
/* Disable Timer 1 and Timer 2. */
CSR_WRITE_4(sc, JME_TIMER1, 0);
CSR_WRITE_4(sc, JME_TIMER2, 0);
/* Configure retry transmit period, retry limit value. */
CSR_WRITE_4(sc, JME_TXTRHD,
((TXTRHD_RT_PERIOD_DEFAULT << TXTRHD_RT_PERIOD_SHIFT) &
TXTRHD_RT_PERIOD_MASK) |
((TXTRHD_RT_LIMIT_DEFAULT << TXTRHD_RT_LIMIT_SHIFT) &
TXTRHD_RT_LIMIT_SHIFT));
/* Disable RSS. */
CSR_WRITE_4(sc, JME_RSSC, RSSC_DIS_RSS);
/* Initialize the interrupt mask. */
CSR_WRITE_4(sc, JME_INTR_MASK_SET, JME_INTRS);
CSR_WRITE_4(sc, JME_INTR_STATUS, 0xFFFFFFFF);
/*
* Enabling Tx/Rx DMA engines and Rx queue processing is
* done after detection of valid link in jme_link_task.
*/
sc->jme_flags &= ~JME_FLAG_LINK;
/* Set the current media. */
mii_mediachg(mii);
callout_reset(&sc->jme_tick_ch, hz, jme_tick, sc);
ifp->if_drv_flags |= IFF_DRV_RUNNING;
ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
}
static void
jme_stop(struct jme_softc *sc)
{
struct ifnet *ifp;
struct jme_txdesc *txd;
struct jme_rxdesc *rxd;
int i;
JME_LOCK_ASSERT(sc);
/*
* Mark the interface down and cancel the watchdog timer.
*/
ifp = sc->jme_ifp;
ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
sc->jme_flags &= ~JME_FLAG_LINK;
callout_stop(&sc->jme_tick_ch);
sc->jme_watchdog_timer = 0;
/*
* Disable interrupts.
*/
CSR_WRITE_4(sc, JME_INTR_MASK_CLR, JME_INTRS);
CSR_WRITE_4(sc, JME_INTR_STATUS, 0xFFFFFFFF);
/* Disable updating shadow status block. */
CSR_WRITE_4(sc, JME_SHBASE_ADDR_LO,
CSR_READ_4(sc, JME_SHBASE_ADDR_LO) & ~SHBASE_POST_ENB);
/* Stop receiver, transmitter. */
jme_stop_rx(sc);
jme_stop_tx(sc);
/* Reclaim Rx/Tx buffers that have been completed. */
jme_rxintr(sc, JME_RX_RING_CNT);
if (sc->jme_cdata.jme_rxhead != NULL)
m_freem(sc->jme_cdata.jme_rxhead);
JME_RXCHAIN_RESET(sc);
jme_txeof(sc);
/*
* Free RX and TX mbufs still in the queues.
*/
for (i = 0; i < JME_RX_RING_CNT; i++) {
rxd = &sc->jme_cdata.jme_rxdesc[i];
if (rxd->rx_m != NULL) {
bus_dmamap_sync(sc->jme_cdata.jme_rx_tag,
rxd->rx_dmamap, BUS_DMASYNC_POSTREAD);
bus_dmamap_unload(sc->jme_cdata.jme_rx_tag,
rxd->rx_dmamap);
m_freem(rxd->rx_m);
rxd->rx_m = NULL;
}
}
for (i = 0; i < JME_TX_RING_CNT; i++) {
txd = &sc->jme_cdata.jme_txdesc[i];
if (txd->tx_m != NULL) {
bus_dmamap_sync(sc->jme_cdata.jme_tx_tag,
txd->tx_dmamap, BUS_DMASYNC_POSTWRITE);
bus_dmamap_unload(sc->jme_cdata.jme_tx_tag,
txd->tx_dmamap);
m_freem(txd->tx_m);
txd->tx_m = NULL;
txd->tx_ndesc = 0;
}
}
jme_stats_update(sc);
jme_stats_save(sc);
}
static void
jme_stop_tx(struct jme_softc *sc)
{
uint32_t reg;
int i;
reg = CSR_READ_4(sc, JME_TXCSR);
if ((reg & TXCSR_TX_ENB) == 0)
return;
reg &= ~TXCSR_TX_ENB;
CSR_WRITE_4(sc, JME_TXCSR, reg);
for (i = JME_TIMEOUT; i > 0; i--) {
DELAY(1);
if ((CSR_READ_4(sc, JME_TXCSR) & TXCSR_TX_ENB) == 0)
break;
}
if (i == 0)
device_printf(sc->jme_dev, "stopping transmitter timeout!\n");
}
static void
jme_stop_rx(struct jme_softc *sc)
{
uint32_t reg;
int i;
reg = CSR_READ_4(sc, JME_RXCSR);
if ((reg & RXCSR_RX_ENB) == 0)
return;
reg &= ~RXCSR_RX_ENB;
CSR_WRITE_4(sc, JME_RXCSR, reg);
for (i = JME_TIMEOUT; i > 0; i--) {
DELAY(1);
if ((CSR_READ_4(sc, JME_RXCSR) & RXCSR_RX_ENB) == 0)
break;
}
if (i == 0)
device_printf(sc->jme_dev, "stopping recevier timeout!\n");
}
static void
jme_init_tx_ring(struct jme_softc *sc)
{
struct jme_ring_data *rd;
struct jme_txdesc *txd;
int i;
sc->jme_cdata.jme_tx_prod = 0;
sc->jme_cdata.jme_tx_cons = 0;
sc->jme_cdata.jme_tx_cnt = 0;
rd = &sc->jme_rdata;
bzero(rd->jme_tx_ring, JME_TX_RING_SIZE);
for (i = 0; i < JME_TX_RING_CNT; i++) {
txd = &sc->jme_cdata.jme_txdesc[i];
txd->tx_m = NULL;
txd->tx_desc = &rd->jme_tx_ring[i];
txd->tx_ndesc = 0;
}
bus_dmamap_sync(sc->jme_cdata.jme_tx_ring_tag,
sc->jme_cdata.jme_tx_ring_map,
BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
}
static void
jme_init_ssb(struct jme_softc *sc)
{
struct jme_ring_data *rd;
rd = &sc->jme_rdata;
bzero(rd->jme_ssb_block, JME_SSB_SIZE);
bus_dmamap_sync(sc->jme_cdata.jme_ssb_tag, sc->jme_cdata.jme_ssb_map,
BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
}
static int
jme_init_rx_ring(struct jme_softc *sc)
{
struct jme_ring_data *rd;
struct jme_rxdesc *rxd;
int i;
sc->jme_cdata.jme_rx_cons = 0;
JME_RXCHAIN_RESET(sc);
sc->jme_morework = 0;
rd = &sc->jme_rdata;
bzero(rd->jme_rx_ring, JME_RX_RING_SIZE);
for (i = 0; i < JME_RX_RING_CNT; i++) {
rxd = &sc->jme_cdata.jme_rxdesc[i];
rxd->rx_m = NULL;
rxd->rx_desc = &rd->jme_rx_ring[i];
if (jme_newbuf(sc, rxd) != 0)
return (ENOBUFS);
}
bus_dmamap_sync(sc->jme_cdata.jme_rx_ring_tag,
sc->jme_cdata.jme_rx_ring_map,
BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
return (0);
}
static int
jme_newbuf(struct jme_softc *sc, struct jme_rxdesc *rxd)
{
struct jme_desc *desc;
struct mbuf *m;
bus_dma_segment_t segs[1];
bus_dmamap_t map;
int nsegs;
m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
if (m == NULL)
return (ENOBUFS);
/*
* JMC250 has 64bit boundary alignment limitation so jme(4)
* takes advantage of 10 bytes padding feature of hardware
* in order not to copy entire frame to align IP header on
* 32bit boundary.
*/
m->m_len = m->m_pkthdr.len = MCLBYTES;
if (bus_dmamap_load_mbuf_sg(sc->jme_cdata.jme_rx_tag,
sc->jme_cdata.jme_rx_sparemap, m, segs, &nsegs, 0) != 0) {
m_freem(m);
return (ENOBUFS);
}
KASSERT(nsegs == 1, ("%s: %d segments returned!", __func__, nsegs));
if (rxd->rx_m != NULL) {
bus_dmamap_sync(sc->jme_cdata.jme_rx_tag, rxd->rx_dmamap,
BUS_DMASYNC_POSTREAD);
bus_dmamap_unload(sc->jme_cdata.jme_rx_tag, rxd->rx_dmamap);
}
map = rxd->rx_dmamap;
rxd->rx_dmamap = sc->jme_cdata.jme_rx_sparemap;
sc->jme_cdata.jme_rx_sparemap = map;
bus_dmamap_sync(sc->jme_cdata.jme_rx_tag, rxd->rx_dmamap,
BUS_DMASYNC_PREREAD);
rxd->rx_m = m;
desc = rxd->rx_desc;
desc->buflen = htole32(segs[0].ds_len);
desc->addr_lo = htole32(JME_ADDR_LO(segs[0].ds_addr));
desc->addr_hi = htole32(JME_ADDR_HI(segs[0].ds_addr));
desc->flags = htole32(JME_RD_OWN | JME_RD_INTR | JME_RD_64BIT);
return (0);
}
static void
jme_set_vlan(struct jme_softc *sc)
{
struct ifnet *ifp;
uint32_t reg;
JME_LOCK_ASSERT(sc);
ifp = sc->jme_ifp;
reg = CSR_READ_4(sc, JME_RXMAC);
reg &= ~RXMAC_VLAN_ENB;
if ((ifp->if_capenable & IFCAP_VLAN_HWTAGGING) != 0)
reg |= RXMAC_VLAN_ENB;
CSR_WRITE_4(sc, JME_RXMAC, reg);
}
static void
jme_set_filter(struct jme_softc *sc)
{
struct ifnet *ifp;
struct ifmultiaddr *ifma;
uint32_t crc;
uint32_t mchash[2];
uint32_t rxcfg;
JME_LOCK_ASSERT(sc);
ifp = sc->jme_ifp;
rxcfg = CSR_READ_4(sc, JME_RXMAC);
rxcfg &= ~ (RXMAC_BROADCAST | RXMAC_PROMISC | RXMAC_MULTICAST |
RXMAC_ALLMULTI);
/* Always accept frames destined to our station address. */
rxcfg |= RXMAC_UNICAST;
if ((ifp->if_flags & IFF_BROADCAST) != 0)
rxcfg |= RXMAC_BROADCAST;
if ((ifp->if_flags & (IFF_PROMISC | IFF_ALLMULTI)) != 0) {
if ((ifp->if_flags & IFF_PROMISC) != 0)
rxcfg |= RXMAC_PROMISC;
if ((ifp->if_flags & IFF_ALLMULTI) != 0)
rxcfg |= RXMAC_ALLMULTI;
CSR_WRITE_4(sc, JME_MAR0, 0xFFFFFFFF);
CSR_WRITE_4(sc, JME_MAR1, 0xFFFFFFFF);
CSR_WRITE_4(sc, JME_RXMAC, rxcfg);
return;
}
/*
* Set up the multicast address filter by passing all multicast
* addresses through a CRC generator, and then using the low-order
* 6 bits as an index into the 64 bit multicast hash table. The
* high order bits select the register, while the rest of the bits
* select the bit within the register.
*/
rxcfg |= RXMAC_MULTICAST;
bzero(mchash, sizeof(mchash));
if_maddr_rlock(ifp);
TAILQ_FOREACH(ifma, &sc->jme_ifp->if_multiaddrs, ifma_link) {
if (ifma->ifma_addr->sa_family != AF_LINK)
continue;
crc = ether_crc32_be(LLADDR((struct sockaddr_dl *)
ifma->ifma_addr), ETHER_ADDR_LEN);
/* Just want the 6 least significant bits. */
crc &= 0x3f;
/* Set the corresponding bit in the hash table. */
mchash[crc >> 5] |= 1 << (crc & 0x1f);
}
if_maddr_runlock(ifp);
CSR_WRITE_4(sc, JME_MAR0, mchash[0]);
CSR_WRITE_4(sc, JME_MAR1, mchash[1]);
CSR_WRITE_4(sc, JME_RXMAC, rxcfg);
}
static void
jme_stats_clear(struct jme_softc *sc)
{
JME_LOCK_ASSERT(sc);
if ((sc->jme_flags & JME_FLAG_HWMIB) == 0)
return;
/* Disable and clear counters. */
CSR_WRITE_4(sc, JME_STATCSR, 0xFFFFFFFF);
/* Activate hw counters. */
CSR_WRITE_4(sc, JME_STATCSR, 0);
CSR_READ_4(sc, JME_STATCSR);
bzero(&sc->jme_stats, sizeof(struct jme_hw_stats));
}
static void
jme_stats_save(struct jme_softc *sc)
{
JME_LOCK_ASSERT(sc);
if ((sc->jme_flags & JME_FLAG_HWMIB) == 0)
return;
/* Save current counters. */
bcopy(&sc->jme_stats, &sc->jme_ostats, sizeof(struct jme_hw_stats));
/* Disable and clear counters. */
CSR_WRITE_4(sc, JME_STATCSR, 0xFFFFFFFF);
}
static void
jme_stats_update(struct jme_softc *sc)
{
struct jme_hw_stats *stat, *ostat;
uint32_t reg;
JME_LOCK_ASSERT(sc);
if ((sc->jme_flags & JME_FLAG_HWMIB) == 0)
return;
stat = &sc->jme_stats;
ostat = &sc->jme_ostats;
stat->tx_good_frames = CSR_READ_4(sc, JME_STAT_TXGOOD);
stat->rx_good_frames = CSR_READ_4(sc, JME_STAT_RXGOOD);
reg = CSR_READ_4(sc, JME_STAT_CRCMII);
stat->rx_crc_errs = (reg & STAT_RX_CRC_ERR_MASK) >>
STAT_RX_CRC_ERR_SHIFT;
stat->rx_mii_errs = (reg & STAT_RX_MII_ERR_MASK) >>
STAT_RX_MII_ERR_SHIFT;
reg = CSR_READ_4(sc, JME_STAT_RXERR);
stat->rx_fifo_oflows = (reg & STAT_RXERR_OFLOW_MASK) >>
STAT_RXERR_OFLOW_SHIFT;
stat->rx_desc_empty = (reg & STAT_RXERR_MPTY_MASK) >>
STAT_RXERR_MPTY_SHIFT;
reg = CSR_READ_4(sc, JME_STAT_FAIL);
stat->rx_bad_frames = (reg & STAT_FAIL_RX_MASK) >> STAT_FAIL_RX_SHIFT;
stat->tx_bad_frames = (reg & STAT_FAIL_TX_MASK) >> STAT_FAIL_TX_SHIFT;
/* Account for previous counters. */
stat->rx_good_frames += ostat->rx_good_frames;
stat->rx_crc_errs += ostat->rx_crc_errs;
stat->rx_mii_errs += ostat->rx_mii_errs;
stat->rx_fifo_oflows += ostat->rx_fifo_oflows;
stat->rx_desc_empty += ostat->rx_desc_empty;
stat->rx_bad_frames += ostat->rx_bad_frames;
stat->tx_good_frames += ostat->tx_good_frames;
stat->tx_bad_frames += ostat->tx_bad_frames;
}
static void
jme_phy_down(struct jme_softc *sc)
{
uint32_t reg;
jme_miibus_writereg(sc->jme_dev, sc->jme_phyaddr, MII_BMCR, BMCR_PDOWN);
if (CHIPMODE_REVFM(sc->jme_chip_rev) >= 5) {
reg = CSR_READ_4(sc, JME_PHYPOWDN);
reg |= 0x0000000F;
CSR_WRITE_4(sc, JME_PHYPOWDN, reg);
reg = pci_read_config(sc->jme_dev, JME_PCI_PE1, 4);
reg &= ~PE1_GIGA_PDOWN_MASK;
reg |= PE1_GIGA_PDOWN_D3;
pci_write_config(sc->jme_dev, JME_PCI_PE1, reg, 4);
}
}
static void
jme_phy_up(struct jme_softc *sc)
{
uint32_t reg;
uint16_t bmcr;
bmcr = jme_miibus_readreg(sc->jme_dev, sc->jme_phyaddr, MII_BMCR);
bmcr &= ~BMCR_PDOWN;
jme_miibus_writereg(sc->jme_dev, sc->jme_phyaddr, MII_BMCR, bmcr);
if (CHIPMODE_REVFM(sc->jme_chip_rev) >= 5) {
reg = CSR_READ_4(sc, JME_PHYPOWDN);
reg &= ~0x0000000F;
CSR_WRITE_4(sc, JME_PHYPOWDN, reg);
reg = pci_read_config(sc->jme_dev, JME_PCI_PE1, 4);
reg &= ~PE1_GIGA_PDOWN_MASK;
reg |= PE1_GIGA_PDOWN_DIS;
pci_write_config(sc->jme_dev, JME_PCI_PE1, reg, 4);
}
}
static int
sysctl_int_range(SYSCTL_HANDLER_ARGS, int low, int high)
{
int error, value;
if (arg1 == NULL)
return (EINVAL);
value = *(int *)arg1;
error = sysctl_handle_int(oidp, &value, 0, req);
if (error || req->newptr == NULL)
return (error);
if (value < low || value > high)
return (EINVAL);
*(int *)arg1 = value;
return (0);
}
static int
sysctl_hw_jme_tx_coal_to(SYSCTL_HANDLER_ARGS)
{
return (sysctl_int_range(oidp, arg1, arg2, req,
PCCTX_COAL_TO_MIN, PCCTX_COAL_TO_MAX));
}
static int
sysctl_hw_jme_tx_coal_pkt(SYSCTL_HANDLER_ARGS)
{
return (sysctl_int_range(oidp, arg1, arg2, req,
PCCTX_COAL_PKT_MIN, PCCTX_COAL_PKT_MAX));
}
static int
sysctl_hw_jme_rx_coal_to(SYSCTL_HANDLER_ARGS)
{
return (sysctl_int_range(oidp, arg1, arg2, req,
PCCRX_COAL_TO_MIN, PCCRX_COAL_TO_MAX));
}
static int
sysctl_hw_jme_rx_coal_pkt(SYSCTL_HANDLER_ARGS)
{
return (sysctl_int_range(oidp, arg1, arg2, req,
PCCRX_COAL_PKT_MIN, PCCRX_COAL_PKT_MAX));
}
static int
sysctl_hw_jme_proc_limit(SYSCTL_HANDLER_ARGS)
{
return (sysctl_int_range(oidp, arg1, arg2, req,
JME_PROC_MIN, JME_PROC_MAX));
}
|