aboutsummaryrefslogtreecommitdiff
path: root/drivers/char/moxa.c
blob: c1a6d3c48da155da8c9e974090ad6e4efe3a4b8c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
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
/*****************************************************************************/
/*
 *           moxa.c  -- MOXA Intellio family multiport serial driver.
 *
 *      Copyright (C) 1999-2000  Moxa Technologies (support@moxa.com.tw).
 *
 *      This code is loosely based on the Linux serial driver, written by
 *      Linus Torvalds, Theodore T'so and others.
 *
 *      This program is free software; you can redistribute it and/or modify
 *      it under the terms of the GNU General Public License as published by
 *      the Free Software Foundation; either version 2 of the License, or
 *      (at your option) any later version.
 *
 *      This program is distributed in the hope that it will be useful,
 *      but WITHOUT ANY WARRANTY; without even the implied warranty of
 *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *      GNU General Public License for more details.
 *
 *      You should have received a copy of the GNU General Public License
 *      along with this program; if not, write to the Free Software
 *      Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

/*
 *    MOXA Intellio Series Driver
 *      for             : LINUX
 *      date            : 1999/1/7
 *      version         : 5.1
 */

#include <linux/module.h>
#include <linux/types.h>
#include <linux/mm.h>
#include <linux/ioport.h>
#include <linux/errno.h>
#include <linux/signal.h>
#include <linux/sched.h>
#include <linux/timer.h>
#include <linux/interrupt.h>
#include <linux/tty.h>
#include <linux/tty_flip.h>
#include <linux/major.h>
#include <linux/string.h>
#include <linux/fcntl.h>
#include <linux/ptrace.h>
#include <linux/serial.h>
#include <linux/tty_driver.h>
#include <linux/delay.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/bitops.h>

#include <asm/system.h>
#include <asm/io.h>
#include <asm/uaccess.h>

#define		MOXA_VERSION		"5.1k"

#define MOXAMAJOR       172
#define MOXACUMAJOR     173

#define put_to_user(arg1, arg2) put_user(arg1, (unsigned long *)arg2)
#define get_from_user(arg1, arg2) get_user(arg1, (unsigned int *)arg2)

#define MAX_BOARDS 		4	/* Don't change this value */
#define MAX_PORTS_PER_BOARD	32	/* Don't change this value */
#define MAX_PORTS 		128	/* Don't change this value */

/*
 *    Define the Moxa PCI vendor and device IDs.
 */
#define MOXA_BUS_TYPE_ISA		0
#define MOXA_BUS_TYPE_PCI		1

#ifndef	PCI_VENDOR_ID_MOXA
#define	PCI_VENDOR_ID_MOXA	0x1393
#endif
#ifndef PCI_DEVICE_ID_CP204J
#define PCI_DEVICE_ID_CP204J	0x2040
#endif
#ifndef PCI_DEVICE_ID_C218
#define PCI_DEVICE_ID_C218	0x2180
#endif
#ifndef PCI_DEVICE_ID_C320
#define PCI_DEVICE_ID_C320	0x3200
#endif

enum {
	MOXA_BOARD_C218_PCI = 1,
	MOXA_BOARD_C218_ISA,
	MOXA_BOARD_C320_PCI,
	MOXA_BOARD_C320_ISA,
	MOXA_BOARD_CP204J,
};

static char *moxa_brdname[] =
{
	"C218 Turbo PCI series",
	"C218 Turbo ISA series",
	"C320 Turbo PCI series",
	"C320 Turbo ISA series",
	"CP-204J series",
};

#ifdef CONFIG_PCI
static struct pci_device_id moxa_pcibrds[] = {
	{ PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_C218, PCI_ANY_ID, PCI_ANY_ID, 
	  0, 0, MOXA_BOARD_C218_PCI },
	{ PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_C320, PCI_ANY_ID, PCI_ANY_ID, 
	  0, 0, MOXA_BOARD_C320_PCI },
	{ PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_CP204J, PCI_ANY_ID, PCI_ANY_ID, 
	  0, 0, MOXA_BOARD_CP204J },
	{ 0 }
};
MODULE_DEVICE_TABLE(pci, moxa_pcibrds);
#endif /* CONFIG_PCI */

typedef struct _moxa_isa_board_conf {
	int boardType;
	int numPorts;
	unsigned long baseAddr;
} moxa_isa_board_conf;

static moxa_isa_board_conf moxa_isa_boards[] =
{
/*       {MOXA_BOARD_C218_ISA,8,0xDC000}, */
};

typedef struct _moxa_pci_devinfo {
	ushort busNum;
	ushort devNum;
} moxa_pci_devinfo;

typedef struct _moxa_board_conf {
	int boardType;
	int numPorts;
	unsigned long baseAddr;
	int busType;
	moxa_pci_devinfo pciInfo;
} moxa_board_conf;

static moxa_board_conf moxa_boards[MAX_BOARDS];
static void __iomem *moxaBaseAddr[MAX_BOARDS];
static int loadstat[MAX_BOARDS];

struct moxa_str {
	int type;
	int port;
	int close_delay;
	unsigned short closing_wait;
	int count;
	int blocked_open;
	long event; /* long req'd for set_bit --RR */
	int asyncflags;
	unsigned long statusflags;
	struct tty_struct *tty;
	int cflag;
	wait_queue_head_t open_wait;
	wait_queue_head_t close_wait;
	struct work_struct tqueue;
};

struct mxser_mstatus {
	tcflag_t cflag;
	int cts;
	int dsr;
	int ri;
	int dcd;
};

static struct mxser_mstatus GMStatus[MAX_PORTS];

/* statusflags */
#define TXSTOPPED	0x1
#define LOWWAIT 	0x2
#define EMPTYWAIT	0x4
#define THROTTLE	0x8

/* event */
#define MOXA_EVENT_HANGUP	1

#define SERIAL_DO_RESTART


#define SERIAL_TYPE_NORMAL	1

#define WAKEUP_CHARS		256

#define PORTNO(x)		((x)->index)

static int verbose = 0;
static int ttymajor = MOXAMAJOR;
/* Variables for insmod */
#ifdef MODULE
static int baseaddr[] 	= 	{0, 0, 0, 0};
static int type[]	=	{0, 0, 0, 0};
static int numports[] 	=	{0, 0, 0, 0};
#endif

MODULE_AUTHOR("William Chen");
MODULE_DESCRIPTION("MOXA Intellio Family Multiport Board Device Driver");
MODULE_LICENSE("GPL");
#ifdef MODULE
module_param_array(type, int, NULL, 0);
module_param_array(baseaddr, int, NULL, 0);
module_param_array(numports, int, NULL, 0);
#endif
module_param(ttymajor, int, 0);
module_param(verbose, bool, 0644);

static struct tty_driver *moxaDriver;
static struct moxa_str moxaChannels[MAX_PORTS];
static unsigned char *moxaXmitBuff;
static int moxaTimer_on;
static struct timer_list moxaTimer;
static int moxaEmptyTimer_on[MAX_PORTS];
static struct timer_list moxaEmptyTimer[MAX_PORTS];
static struct semaphore moxaBuffSem;

/*
 * static functions:
 */
static void do_moxa_softint(void *);
static int moxa_open(struct tty_struct *, struct file *);
static void moxa_close(struct tty_struct *, struct file *);
static int moxa_write(struct tty_struct *, const unsigned char *, int);
static int moxa_write_room(struct tty_struct *);
static void moxa_flush_buffer(struct tty_struct *);
static int moxa_chars_in_buffer(struct tty_struct *);
static void moxa_flush_chars(struct tty_struct *);
static void moxa_put_char(struct tty_struct *, unsigned char);
static int moxa_ioctl(struct tty_struct *, struct file *, unsigned int, unsigned long);
static void moxa_throttle(struct tty_struct *);
static void moxa_unthrottle(struct tty_struct *);
static void moxa_set_termios(struct tty_struct *, struct termios *);
static void moxa_stop(struct tty_struct *);
static void moxa_start(struct tty_struct *);
static void moxa_hangup(struct tty_struct *);
static int moxa_tiocmget(struct tty_struct *tty, struct file *file);
static int moxa_tiocmset(struct tty_struct *tty, struct file *file,
			 unsigned int set, unsigned int clear);
static void moxa_poll(unsigned long);
static void set_tty_param(struct tty_struct *);
static int block_till_ready(struct tty_struct *, struct file *,
			    struct moxa_str *);
static void setup_empty_event(struct tty_struct *);
static void check_xmit_empty(unsigned long);
static void shut_down(struct moxa_str *);
static void receive_data(struct moxa_str *);
/*
 * moxa board interface functions:
 */
static void MoxaDriverInit(void);
static int MoxaDriverIoctl(unsigned int, unsigned long, int);
static int MoxaDriverPoll(void);
static int MoxaPortsOfCard(int);
static int MoxaPortIsValid(int);
static void MoxaPortEnable(int);
static void MoxaPortDisable(int);
static long MoxaPortGetMaxBaud(int);
static long MoxaPortSetBaud(int, long);
static int MoxaPortSetTermio(int, struct termios *, speed_t);
static int MoxaPortGetLineOut(int, int *, int *);
static void MoxaPortLineCtrl(int, int, int);
static void MoxaPortFlowCtrl(int, int, int, int, int, int);
static int MoxaPortLineStatus(int);
static int MoxaPortDCDChange(int);
static int MoxaPortDCDON(int);
static void MoxaPortFlushData(int, int);
static int MoxaPortWriteData(int, unsigned char *, int);
static int MoxaPortReadData(int, struct tty_struct *tty);
static int MoxaPortTxQueue(int);
static int MoxaPortRxQueue(int);
static int MoxaPortTxFree(int);
static void MoxaPortTxDisable(int);
static void MoxaPortTxEnable(int);
static int MoxaPortResetBrkCnt(int);
static void MoxaPortSendBreak(int, int);
static int moxa_get_serial_info(struct moxa_str *, struct serial_struct __user *);
static int moxa_set_serial_info(struct moxa_str *, struct serial_struct __user *);
static void MoxaSetFifo(int port, int enable);

static struct tty_operations moxa_ops = {
	.open = moxa_open,
	.close = moxa_close,
	.write = moxa_write,
	.write_room = moxa_write_room,
	.flush_buffer = moxa_flush_buffer,
	.chars_in_buffer = moxa_chars_in_buffer,
	.flush_chars = moxa_flush_chars,
	.put_char = moxa_put_char,
	.ioctl = moxa_ioctl,
	.throttle = moxa_throttle,
	.unthrottle = moxa_unthrottle,
	.set_termios = moxa_set_termios,
	.stop = moxa_stop,
	.start = moxa_start,
	.hangup = moxa_hangup,
	.tiocmget = moxa_tiocmget,
	.tiocmset = moxa_tiocmset,
};

static DEFINE_SPINLOCK(moxa_lock);

#ifdef CONFIG_PCI
static int moxa_get_PCI_conf(struct pci_dev *p, int board_type, moxa_board_conf * board)
{
	board->baseAddr = pci_resource_start (p, 2);
	board->boardType = board_type;
	switch (board_type) {
	case MOXA_BOARD_C218_ISA:
	case MOXA_BOARD_C218_PCI:
		board->numPorts = 8;
		break;

	case MOXA_BOARD_CP204J:
		board->numPorts = 4;
		break;
	default:
		board->numPorts = 0;
		break;
	}
	board->busType = MOXA_BUS_TYPE_PCI;
	board->pciInfo.busNum = p->bus->number;
	board->pciInfo.devNum = p->devfn >> 3;

	return (0);
}
#endif /* CONFIG_PCI */

static int __init moxa_init(void)
{
	int i, numBoards;
	struct moxa_str *ch;

	printk(KERN_INFO "MOXA Intellio family driver version %s\n", MOXA_VERSION);
	moxaDriver = alloc_tty_driver(MAX_PORTS + 1);
	if (!moxaDriver)
		return -ENOMEM;

	init_MUTEX(&moxaBuffSem);
	moxaDriver->owner = THIS_MODULE;
	moxaDriver->name = "ttyMX";
	moxaDriver->major = ttymajor;
	moxaDriver->minor_start = 0;
	moxaDriver->type = TTY_DRIVER_TYPE_SERIAL;
	moxaDriver->subtype = SERIAL_TYPE_NORMAL;
	moxaDriver->init_termios = tty_std_termios;
	moxaDriver->init_termios.c_iflag = 0;
	moxaDriver->init_termios.c_oflag = 0;
	moxaDriver->init_termios.c_cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL;
	moxaDriver->init_termios.c_lflag = 0;
	moxaDriver->flags = TTY_DRIVER_REAL_RAW;
	tty_set_operations(moxaDriver, &moxa_ops);

	moxaXmitBuff = NULL;

	for (i = 0, ch = moxaChannels; i < MAX_PORTS; i++, ch++) {
		ch->type = PORT_16550A;
		ch->port = i;
		INIT_WORK(&ch->tqueue, do_moxa_softint, ch);
		ch->tty = NULL;
		ch->close_delay = 5 * HZ / 10;
		ch->closing_wait = 30 * HZ;
		ch->count = 0;
		ch->blocked_open = 0;
		ch->cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL;
		init_waitqueue_head(&ch->open_wait);
		init_waitqueue_head(&ch->close_wait);
	}

	for (i = 0; i < MAX_BOARDS; i++) {
		moxa_boards[i].boardType = 0;
		moxa_boards[i].numPorts = 0;
		moxa_boards[i].baseAddr = 0;
		moxa_boards[i].busType = 0;
		moxa_boards[i].pciInfo.busNum = 0;
		moxa_boards[i].pciInfo.devNum = 0;
	}
	MoxaDriverInit();
	printk("Tty devices major number = %d\n", ttymajor);

	if (tty_register_driver(moxaDriver)) {
		printk(KERN_ERR "Couldn't install MOXA Smartio family driver !\n");
		put_tty_driver(moxaDriver);
		return -1;
	}
	for (i = 0; i < MAX_PORTS; i++) {
		init_timer(&moxaEmptyTimer[i]);
		moxaEmptyTimer[i].function = check_xmit_empty;
		moxaEmptyTimer[i].data = (unsigned long) & moxaChannels[i];
		moxaEmptyTimer_on[i] = 0;
	}

	init_timer(&moxaTimer);
	moxaTimer.function = moxa_poll;
	moxaTimer.expires = jiffies + (HZ / 50);
	moxaTimer_on = 1;
	add_timer(&moxaTimer);

	/* Find the boards defined in source code */
	numBoards = 0;
	for (i = 0; i < MAX_BOARDS; i++) {
		if ((moxa_isa_boards[i].boardType == MOXA_BOARD_C218_ISA) ||
		 (moxa_isa_boards[i].boardType == MOXA_BOARD_C320_ISA)) {
			moxa_boards[numBoards].boardType = moxa_isa_boards[i].boardType;
			if (moxa_isa_boards[i].boardType == MOXA_BOARD_C218_ISA)
				moxa_boards[numBoards].numPorts = 8;
			else
				moxa_boards[numBoards].numPorts = moxa_isa_boards[i].numPorts;
			moxa_boards[numBoards].busType = MOXA_BUS_TYPE_ISA;
			moxa_boards[numBoards].baseAddr = moxa_isa_boards[i].baseAddr;
			if (verbose)
				printk("Board %2d: %s board(baseAddr=%lx)\n",
				       numBoards + 1,
				       moxa_brdname[moxa_boards[numBoards].boardType - 1],
				       moxa_boards[numBoards].baseAddr);
			numBoards++;
		}
	}
	/* Find the boards defined form module args. */
#ifdef MODULE
	for (i = 0; i < MAX_BOARDS; i++) {
		if ((type[i] == MOXA_BOARD_C218_ISA) ||
		    (type[i] == MOXA_BOARD_C320_ISA)) {
			if (verbose)
				printk("Board %2d: %s board(baseAddr=%lx)\n",
				       numBoards + 1,
				       moxa_brdname[type[i] - 1],
				       (unsigned long) baseaddr[i]);
			if (numBoards >= MAX_BOARDS) {
				if (verbose)
					printk("More than %d MOXA Intellio family boards found. Board is ignored.", MAX_BOARDS);
				continue;
			}
			moxa_boards[numBoards].boardType = type[i];
			if (moxa_isa_boards[i].boardType == MOXA_BOARD_C218_ISA)
				moxa_boards[numBoards].numPorts = 8;
			else
				moxa_boards[numBoards].numPorts = numports[i];
			moxa_boards[numBoards].busType = MOXA_BUS_TYPE_ISA;
			moxa_boards[numBoards].baseAddr = baseaddr[i];
			numBoards++;
		}
	}
#endif
	/* Find PCI boards here */
#ifdef CONFIG_PCI
	{
		struct pci_dev *p = NULL;
		int n = ARRAY_SIZE(moxa_pcibrds) - 1;
		i = 0;
		while (i < n) {
			while ((p = pci_get_device(moxa_pcibrds[i].vendor, moxa_pcibrds[i].device, p))!=NULL)
			{
				if (pci_enable_device(p))
					continue;
				if (numBoards >= MAX_BOARDS) {
					if (verbose)
						printk("More than %d MOXA Intellio family boards found. Board is ignored.", MAX_BOARDS);
				} else {
					moxa_get_PCI_conf(p, moxa_pcibrds[i].driver_data,
						&moxa_boards[numBoards]);
					numBoards++;
				}
			}
			i++;
		}
	}
#endif
	for (i = 0; i < numBoards; i++) {
		moxaBaseAddr[i] = ioremap((unsigned long) moxa_boards[i].baseAddr, 0x4000);
	}

	return (0);
}

static void __exit moxa_exit(void)
{
	int i;

	if (verbose)
		printk("Unloading module moxa ...\n");

	if (moxaTimer_on)
		del_timer(&moxaTimer);

	for (i = 0; i < MAX_PORTS; i++)
		if (moxaEmptyTimer_on[i])
			del_timer(&moxaEmptyTimer[i]);

	if (tty_unregister_driver(moxaDriver))
		printk("Couldn't unregister MOXA Intellio family serial driver\n");
	put_tty_driver(moxaDriver);
	if (verbose)
		printk("Done\n");
}

module_init(moxa_init);
module_exit(moxa_exit);

static void do_moxa_softint(void *private_)
{
	struct moxa_str *ch = (struct moxa_str *) private_;
	struct tty_struct *tty;

	if (ch && (tty = ch->tty)) {
		if (test_and_clear_bit(MOXA_EVENT_HANGUP, &ch->event)) {
			tty_hangup(tty);	/* FIXME: module removal race here - AKPM */
			wake_up_interruptible(&ch->open_wait);
			ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE;
		}
	}
}

static int moxa_open(struct tty_struct *tty, struct file *filp)
{
	struct moxa_str *ch;
	int port;
	int retval;
	unsigned long page;

	port = PORTNO(tty);
	if (port == MAX_PORTS) {
		return (0);
	}
	if (!MoxaPortIsValid(port)) {
		tty->driver_data = NULL;
		return (-ENODEV);
	}
	down(&moxaBuffSem);
	if (!moxaXmitBuff) {
		page = get_zeroed_page(GFP_KERNEL);
		if (!page) {
			up(&moxaBuffSem);
			return (-ENOMEM);
		}
		/* This test is guarded by the BuffSem so no longer needed
		   delete me in 2.5 */
		if (moxaXmitBuff)
			free_page(page);
		else
			moxaXmitBuff = (unsigned char *) page;
	}
	up(&moxaBuffSem);

	ch = &moxaChannels[port];
	ch->count++;
	tty->driver_data = ch;
	ch->tty = tty;
	if (!(ch->asyncflags & ASYNC_INITIALIZED)) {
		ch->statusflags = 0;
		set_tty_param(tty);
		MoxaPortLineCtrl(ch->port, 1, 1);
		MoxaPortEnable(ch->port);
		ch->asyncflags |= ASYNC_INITIALIZED;
	}
	retval = block_till_ready(tty, filp, ch);

	moxa_unthrottle(tty);

	if (ch->type == PORT_16550A) {
		MoxaSetFifo(ch->port, 1);
	} else {
		MoxaSetFifo(ch->port, 0);
	}

	return (retval);
}

static void moxa_close(struct tty_struct *tty, struct file *filp)
{
	struct moxa_str *ch;
	int port;

	port = PORTNO(tty);
	if (port == MAX_PORTS) {
		return;
	}
	if (!MoxaPortIsValid(port)) {
#ifdef SERIAL_DEBUG_CLOSE
		printk("Invalid portno in moxa_close\n");
#endif
		tty->driver_data = NULL;
		return;
	}
	if (tty->driver_data == NULL) {
		return;
	}
	if (tty_hung_up_p(filp)) {
		return;
	}
	ch = (struct moxa_str *) tty->driver_data;

	if ((tty->count == 1) && (ch->count != 1)) {
		printk("moxa_close: bad serial port count; tty->count is 1, "
		       "ch->count is %d\n", ch->count);
		ch->count = 1;
	}
	if (--ch->count < 0) {
		printk("moxa_close: bad serial port count, device=%s\n",
		       tty->name);
		ch->count = 0;
	}
	if (ch->count) {
		return;
	}
	ch->asyncflags |= ASYNC_CLOSING;

	ch->cflag = tty->termios->c_cflag;
	if (ch->asyncflags & ASYNC_INITIALIZED) {
		setup_empty_event(tty);
		tty_wait_until_sent(tty, 30 * HZ);	/* 30 seconds timeout */
		moxaEmptyTimer_on[ch->port] = 0;
		del_timer(&moxaEmptyTimer[ch->port]);
	}
	shut_down(ch);
	MoxaPortFlushData(port, 2);

	if (tty->driver->flush_buffer)
		tty->driver->flush_buffer(tty);
	tty_ldisc_flush(tty);
			
	tty->closing = 0;
	ch->event = 0;
	ch->tty = NULL;
	if (ch->blocked_open) {
		if (ch->close_delay) {
			msleep_interruptible(jiffies_to_msecs(ch->close_delay));
		}
		wake_up_interruptible(&ch->open_wait);
	}
	ch->asyncflags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING);
	wake_up_interruptible(&ch->close_wait);
}

static int moxa_write(struct tty_struct *tty,
		      const unsigned char *buf, int count)
{
	struct moxa_str *ch;
	int len, port;
	unsigned long flags;

	ch = (struct moxa_str *) tty->driver_data;
	if (ch == NULL)
		return (0);
	port = ch->port;

	spin_lock_irqsave(&moxa_lock, flags);
	len = MoxaPortWriteData(port, (unsigned char *) buf, count);
	spin_unlock_irqrestore(&moxa_lock, flags);

	/*********************************************
	if ( !(ch->statusflags & LOWWAIT) &&
	     ((len != count) || (MoxaPortTxFree(port) <= 100)) )
	************************************************/
	ch->statusflags |= LOWWAIT;
	return (len);
}

static int moxa_write_room(struct tty_struct *tty)
{
	struct moxa_str *ch;

	if (tty->stopped)
		return (0);
	ch = (struct moxa_str *) tty->driver_data;
	if (ch == NULL)
		return (0);
	return (MoxaPortTxFree(ch->port));
}

static void moxa_flush_buffer(struct tty_struct *tty)
{
	struct moxa_str *ch = (struct moxa_str *) tty->driver_data;

	if (ch == NULL)
		return;
	MoxaPortFlushData(ch->port, 1);
	tty_wakeup(tty);
}

static int moxa_chars_in_buffer(struct tty_struct *tty)
{
	int chars;
	struct moxa_str *ch = (struct moxa_str *) tty->driver_data;

	/*
	 * Sigh...I have to check if driver_data is NULL here, because
	 * if an open() fails, the TTY subsystem eventually calls
	 * tty_wait_until_sent(), which calls the driver's chars_in_buffer()
	 * routine.  And since the open() failed, we return 0 here.  TDJ
	 */
	if (ch == NULL)
		return (0);
	chars = MoxaPortTxQueue(ch->port);
	if (chars) {
		/*
		 * Make it possible to wakeup anything waiting for output
		 * in tty_ioctl.c, etc.
		 */
		if (!(ch->statusflags & EMPTYWAIT))
			setup_empty_event(tty);
	}
	return (chars);
}

static void moxa_flush_chars(struct tty_struct *tty)
{
	/*
	 * Don't think I need this, because this is called to empty the TX
	 * buffer for the 16450, 16550, etc.
	 */
}

static void moxa_put_char(struct tty_struct *tty, unsigned char c)
{
	struct moxa_str *ch;
	int port;
	unsigned long flags;

	ch = (struct moxa_str *) tty->driver_data;
	if (ch == NULL)
		return;
	port = ch->port;
	spin_lock_irqsave(&moxa_lock, flags);
	moxaXmitBuff[0] = c;
	MoxaPortWriteData(port, moxaXmitBuff, 1);
	spin_unlock_irqrestore(&moxa_lock, flags);
	/************************************************
	if ( !(ch->statusflags & LOWWAIT) && (MoxaPortTxFree(port) <= 100) )
	*************************************************/
	ch->statusflags |= LOWWAIT;
}

static int moxa_tiocmget(struct tty_struct *tty, struct file *file)
{
	struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
	int port;
	int flag = 0, dtr, rts;

	port = PORTNO(tty);
	if ((port != MAX_PORTS) && (!ch))
		return (-EINVAL);

	MoxaPortGetLineOut(ch->port, &dtr, &rts);
	if (dtr)
		flag |= TIOCM_DTR;
	if (rts)
		flag |= TIOCM_RTS;
	dtr = MoxaPortLineStatus(ch->port);
	if (dtr & 1)
		flag |= TIOCM_CTS;
	if (dtr & 2)
		flag |= TIOCM_DSR;
	if (dtr & 4)
		flag |= TIOCM_CD;
	return flag;
}

static int moxa_tiocmset(struct tty_struct *tty, struct file *file,
			 unsigned int set, unsigned int clear)
{
	struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
	int port;
	int dtr, rts;

	port = PORTNO(tty);
	if ((port != MAX_PORTS) && (!ch))
		return (-EINVAL);

	MoxaPortGetLineOut(ch->port, &dtr, &rts);
	if (set & TIOCM_RTS)
		rts = 1;
	if (set & TIOCM_DTR)
		dtr = 1;
	if (clear & TIOCM_RTS)
		rts = 0;
	if (clear & TIOCM_DTR)
		dtr = 0;
	MoxaPortLineCtrl(ch->port, dtr, rts);
	return 0;
}

static int moxa_ioctl(struct tty_struct *tty, struct file *file,
		      unsigned int cmd, unsigned long arg)
{
	struct moxa_str *ch = (struct moxa_str *) tty->driver_data;
	register int port;
	void __user *argp = (void __user *)arg;
	int retval;

	port = PORTNO(tty);
	if ((port != MAX_PORTS) && (!ch))
		return (-EINVAL);

	switch (cmd) {
	case TCSBRK:		/* SVID version: non-zero arg --> no break */
		retval = tty_check_change(tty);
		if (retval)
			return (retval);
		setup_empty_event(tty);
		tty_wait_until_sent(tty, 0);
		if (!arg)
			MoxaPortSendBreak(ch->port, 0);
		return (0);
	case TCSBRKP:		/* support for POSIX tcsendbreak() */
		retval = tty_check_change(tty);
		if (retval)
			return (retval);
		setup_empty_event(tty);
		tty_wait_until_sent(tty, 0);
		MoxaPortSendBreak(ch->port, arg);
		return (0);
	case TIOCGSOFTCAR:
		return put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long __user *) argp);
	case TIOCSSOFTCAR:
		if(get_user(retval, (unsigned long __user *) argp))
			return -EFAULT;
		arg = retval;
		tty->termios->c_cflag = ((tty->termios->c_cflag & ~CLOCAL) |
					 (arg ? CLOCAL : 0));
		if (C_CLOCAL(tty))
			ch->asyncflags &= ~ASYNC_CHECK_CD;
		else
			ch->asyncflags |= ASYNC_CHECK_CD;
		return (0);
	case TIOCGSERIAL:
		return moxa_get_serial_info(ch, argp);

	case TIOCSSERIAL:
		return moxa_set_serial_info(ch, argp);
	default:
		retval = MoxaDriverIoctl(cmd, arg, port);
	}
	return (retval);
}

static void moxa_throttle(struct tty_struct *tty)
{
	struct moxa_str *ch = (struct moxa_str *) tty->driver_data;

	ch->statusflags |= THROTTLE;
}

static void moxa_unthrottle(struct tty_struct *tty)
{
	struct moxa_str *ch = (struct moxa_str *) tty->driver_data;

	ch->statusflags &= ~THROTTLE;
}

static void moxa_set_termios(struct tty_struct *tty,
			     struct termios *old_termios)
{
	struct moxa_str *ch = (struct moxa_str *) tty->driver_data;

	if (ch == NULL)
		return;
	set_tty_param(tty);
	if (!(old_termios->c_cflag & CLOCAL) &&
	    (tty->termios->c_cflag & CLOCAL))
		wake_up_interruptible(&ch->open_wait);
}

static void moxa_stop(struct tty_struct *tty)
{
	struct moxa_str *ch = (struct moxa_str *) tty->driver_data;

	if (ch == NULL)
		return;
	MoxaPortTxDisable(ch->port);
	ch->statusflags |= TXSTOPPED;
}


static void moxa_start(struct tty_struct *tty)
{
	struct moxa_str *ch = (struct moxa_str *) tty->driver_data;

	if (ch == NULL)
		return;

	if (!(ch->statusflags & TXSTOPPED))
		return;

	MoxaPortTxEnable(ch->port);
	ch->statusflags &= ~TXSTOPPED;
}

static void moxa_hangup(struct tty_struct *tty)
{
	struct moxa_str *ch = (struct moxa_str *) tty->driver_data;

	moxa_flush_buffer(tty);
	shut_down(ch);
	ch->event = 0;
	ch->count = 0;
	ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE;
	ch->tty = NULL;
	wake_up_interruptible(&ch->open_wait);
}

static void moxa_poll(unsigned long ignored)
{
	register int card;
	struct moxa_str *ch;
	struct tty_struct *tp;
	int i, ports;

	moxaTimer_on = 0;
	del_timer(&moxaTimer);

	if (MoxaDriverPoll() < 0) {
		moxaTimer.function = moxa_poll;
		moxaTimer.expires = jiffies + (HZ / 50);
		moxaTimer_on = 1;
		add_timer(&moxaTimer);
		return;
	}
	for (card = 0; card < MAX_BOARDS; card++) {
		if ((ports = MoxaPortsOfCard(card)) <= 0)
			continue;
		ch = &moxaChannels[card * MAX_PORTS_PER_BOARD];
		for (i = 0; i < ports; i++, ch++) {
			if ((ch->asyncflags & ASYNC_INITIALIZED) == 0)
				continue;
			if (!(ch->statusflags & THROTTLE) &&
			    (MoxaPortRxQueue(ch->port) > 0))
				receive_data(ch);
			if ((tp = ch->tty) == 0)
				continue;
			if (ch->statusflags & LOWWAIT) {
				if (MoxaPortTxQueue(ch->port) <= WAKEUP_CHARS) {
					if (!tp->stopped) {
						ch->statusflags &= ~LOWWAIT;
						tty_wakeup(tp);
					}
				}
			}
			if (!I_IGNBRK(tp) && (MoxaPortResetBrkCnt(ch->port) > 0)) {
				tty_insert_flip_char(tp, 0, TTY_BREAK);
				tty_schedule_flip(tp);
			}
			if (MoxaPortDCDChange(ch->port)) {
				if (ch->asyncflags & ASYNC_CHECK_CD) {
					if (MoxaPortDCDON(ch->port))
						wake_up_interruptible(&ch->open_wait);
					else {
						set_bit(MOXA_EVENT_HANGUP, &ch->event);
						schedule_work(&ch->tqueue);
					}
				}
			}
		}
	}

	moxaTimer.function = moxa_poll;
	moxaTimer.expires = jiffies + (HZ / 50);
	moxaTimer_on = 1;
	add_timer(&moxaTimer);
}

/******************************************************************************/

static void set_tty_param(struct tty_struct *tty)
{
	register struct termios *ts;
	struct moxa_str *ch;
	int rts, cts, txflow, rxflow, xany;

	ch = (struct moxa_str *) tty->driver_data;
	ts = tty->termios;
	if (ts->c_cflag & CLOCAL)
		ch->asyncflags &= ~ASYNC_CHECK_CD;
	else
		ch->asyncflags |= ASYNC_CHECK_CD;
	rts = cts = txflow = rxflow = xany = 0;
	if (ts->c_cflag & CRTSCTS)
		rts = cts = 1;
	if (ts->c_iflag & IXON)
		txflow = 1;
	if (ts->c_iflag & IXOFF)
		rxflow = 1;
	if (ts->c_iflag & IXANY)
		xany = 1;
	MoxaPortFlowCtrl(ch->port, rts, cts, txflow, rxflow, xany);
	MoxaPortSetTermio(ch->port, ts, tty_get_baud_rate(tty));
}

static int block_till_ready(struct tty_struct *tty, struct file *filp,
			    struct moxa_str *ch)
{
	DECLARE_WAITQUEUE(wait,current);
	unsigned long flags;
	int retval;
	int do_clocal = C_CLOCAL(tty);

	/*
	 * If the device is in the middle of being closed, then block
	 * until it's done, and then try again.
	 */
	if (tty_hung_up_p(filp) || (ch->asyncflags & ASYNC_CLOSING)) {
		if (ch->asyncflags & ASYNC_CLOSING)
			interruptible_sleep_on(&ch->close_wait);
#ifdef SERIAL_DO_RESTART
		if (ch->asyncflags & ASYNC_HUP_NOTIFY)
			return (-EAGAIN);
		else
			return (-ERESTARTSYS);
#else
		return (-EAGAIN);
#endif
	}
	/*
	 * If non-blocking mode is set, then make the check up front
	 * and then exit.
	 */
	if (filp->f_flags & O_NONBLOCK) {
		ch->asyncflags |= ASYNC_NORMAL_ACTIVE;
		return (0);
	}
	/*
	 * Block waiting for the carrier detect and the line to become free
	 */
	retval = 0;
	add_wait_queue(&ch->open_wait, &wait);
#ifdef SERIAL_DEBUG_OPEN
	printk("block_til_ready before block: ttys%d, count = %d\n",
	       ch->line, ch->count);
#endif
	spin_lock_irqsave(&moxa_lock, flags);
	if (!tty_hung_up_p(filp))
		ch->count--;
	ch->blocked_open++;
	spin_unlock_irqrestore(&moxa_lock, flags);

	while (1) {
		set_current_state(TASK_INTERRUPTIBLE);
		if (tty_hung_up_p(filp) ||
		    !(ch->asyncflags & ASYNC_INITIALIZED)) {
#ifdef SERIAL_DO_RESTART
			if (ch->asyncflags & ASYNC_HUP_NOTIFY)
				retval = -EAGAIN;
			else
				retval = -ERESTARTSYS;
#else
			retval = -EAGAIN;
#endif
			break;
		}
		if (!(ch->asyncflags & ASYNC_CLOSING) && (do_clocal ||
						MoxaPortDCDON(ch->port)))
			break;

		if (signal_pending(current)) {
			retval = -ERESTARTSYS;
			break;
		}
		schedule();
	}
	set_current_state(TASK_RUNNING);
	remove_wait_queue(&ch->open_wait, &wait);

	spin_lock_irqsave(&moxa_lock, flags);
	if (!tty_hung_up_p(filp))
		ch->count++;
	ch->blocked_open--;
	spin_unlock_irqrestore(&moxa_lock, flags);
#ifdef SERIAL_DEBUG_OPEN
	printk("block_til_ready after blocking: ttys%d, count = %d\n",
	       ch->line, ch->count);
#endif
	if (retval)
		return (retval);
	/* FIXME: review to see if we need to use set_bit on these */
	ch->asyncflags |= ASYNC_NORMAL_ACTIVE;
	return 0;
}

static void setup_empty_event(struct tty_struct *tty)
{
	struct moxa_str *ch = tty->driver_data;
	unsigned long flags;

	spin_lock_irqsave(&moxa_lock, flags);
	ch->statusflags |= EMPTYWAIT;
	moxaEmptyTimer_on[ch->port] = 0;
	del_timer(&moxaEmptyTimer[ch->port]);
	moxaEmptyTimer[ch->port].expires = jiffies + HZ;
	moxaEmptyTimer_on[ch->port] = 1;
	add_timer(&moxaEmptyTimer[ch->port]);
	spin_unlock_irqrestore(&moxa_lock, flags);
}

static void check_xmit_empty(unsigned long data)
{
	struct moxa_str *ch;

	ch = (struct moxa_str *) data;
	moxaEmptyTimer_on[ch->port] = 0;
	del_timer(&moxaEmptyTimer[ch->port]);
	if (ch->tty && (ch->statusflags & EMPTYWAIT)) {
		if (MoxaPortTxQueue(ch->port) == 0) {
			ch->statusflags &= ~EMPTYWAIT;
			tty_wakeup(ch->tty);
			return;
		}
		moxaEmptyTimer[ch->port].expires = jiffies + HZ;
		moxaEmptyTimer_on[ch->port] = 1;
		add_timer(&moxaEmptyTimer[ch->port]);
	} else
		ch->statusflags &= ~EMPTYWAIT;
}

static void shut_down(struct moxa_str *ch)
{
	struct tty_struct *tp;

	if (!(ch->asyncflags & ASYNC_INITIALIZED))
		return;

	tp = ch->tty;

	MoxaPortDisable(ch->port);

	/*
	 * If we're a modem control device and HUPCL is on, drop RTS & DTR.
	 */
	if (tp->termios->c_cflag & HUPCL)
		MoxaPortLineCtrl(ch->port, 0, 0);

	ch->asyncflags &= ~ASYNC_INITIALIZED;
}

static void receive_data(struct moxa_str *ch)
{
	struct tty_struct *tp;
	struct termios *ts;
	unsigned long flags;

	ts = NULL;
	tp = ch->tty;
	if (tp)
		ts = tp->termios;
	/**************************************************
	if ( !tp || !ts || !(ts->c_cflag & CREAD) ) {
	*****************************************************/
	if (!tp || !ts) {
		MoxaPortFlushData(ch->port, 0);
		return;
	}
	spin_lock_irqsave(&moxa_lock, flags);
	MoxaPortReadData(ch->port, tp);
	spin_unlock_irqrestore(&moxa_lock, flags);
	tty_schedule_flip(tp);
}

#define Magic_code	0x404

/*
 *    System Configuration
 */
/*
 *    for C218 BIOS initialization
 */
#define C218_ConfBase	0x800
#define C218_status	(C218_ConfBase + 0)	/* BIOS running status    */
#define C218_diag	(C218_ConfBase + 2)	/* diagnostic status      */
#define C218_key	(C218_ConfBase + 4)	/* WORD (0x218 for C218) */
#define C218DLoad_len	(C218_ConfBase + 6)	/* WORD           */
#define C218check_sum	(C218_ConfBase + 8)	/* BYTE           */
#define C218chksum_ok	(C218_ConfBase + 0x0a)	/* BYTE (1:ok)            */
#define C218_TestRx	(C218_ConfBase + 0x10)	/* 8 bytes for 8 ports    */
#define C218_TestTx	(C218_ConfBase + 0x18)	/* 8 bytes for 8 ports    */
#define C218_RXerr	(C218_ConfBase + 0x20)	/* 8 bytes for 8 ports    */
#define C218_ErrFlag	(C218_ConfBase + 0x28)	/* 8 bytes for 8 ports    */

#define C218_LoadBuf	0x0F00
#define C218_KeyCode	0x218
#define CP204J_KeyCode	0x204

/*
 *    for C320 BIOS initialization
 */
#define C320_ConfBase	0x800
#define C320_LoadBuf	0x0f00
#define STS_init	0x05	/* for C320_status        */

#define C320_status	C320_ConfBase + 0	/* BIOS running status    */
#define C320_diag	C320_ConfBase + 2	/* diagnostic status      */
#define C320_key	C320_ConfBase + 4	/* WORD (0320H for C320) */
#define C320DLoad_len	C320_ConfBase + 6	/* WORD           */
#define C320check_sum	C320_ConfBase + 8	/* WORD           */
#define C320chksum_ok	C320_ConfBase + 0x0a	/* WORD (1:ok)            */
#define C320bapi_len	C320_ConfBase + 0x0c	/* WORD           */
#define C320UART_no	C320_ConfBase + 0x0e	/* WORD           */

#define C320_KeyCode	0x320

#define FixPage_addr	0x0000	/* starting addr of static page  */
#define DynPage_addr	0x2000	/* starting addr of dynamic page */
#define C218_start	0x3000	/* starting addr of C218 BIOS prg */
#define Control_reg	0x1ff0	/* select page and reset control */
#define HW_reset	0x80

/*
 *    Function Codes
 */
#define FC_CardReset	0x80
#define FC_ChannelReset 1	/* C320 firmware not supported */
#define FC_EnableCH	2
#define FC_DisableCH	3
#define FC_SetParam	4
#define FC_SetMode	5
#define FC_SetRate	6
#define FC_LineControl	7
#define FC_LineStatus	8
#define FC_XmitControl	9
#define FC_FlushQueue	10
#define FC_SendBreak	11
#define FC_StopBreak	12
#define FC_LoopbackON	13
#define FC_LoopbackOFF	14
#define FC_ClrIrqTable	15
#define FC_SendXon	16
#define FC_SetTermIrq	17	/* C320 firmware not supported */
#define FC_SetCntIrq	18	/* C320 firmware not supported */
#define FC_SetBreakIrq	19
#define FC_SetLineIrq	20
#define FC_SetFlowCtl	21
#define FC_GenIrq	22
#define FC_InCD180	23
#define FC_OutCD180	24
#define FC_InUARTreg	23
#define FC_OutUARTreg	24
#define FC_SetXonXoff	25
#define FC_OutCD180CCR	26
#define FC_ExtIQueue	27
#define FC_ExtOQueue	28
#define FC_ClrLineIrq	29
#define FC_HWFlowCtl	30
#define FC_GetClockRate 35
#define FC_SetBaud	36
#define FC_SetDataMode  41
#define FC_GetCCSR      43
#define FC_GetDataError 45
#define FC_RxControl	50
#define FC_ImmSend	51
#define FC_SetXonState	52
#define FC_SetXoffState	53
#define FC_SetRxFIFOTrig 54
#define FC_SetTxFIFOCnt 55
#define FC_UnixRate	56
#define FC_UnixResetTimer 57

#define	RxFIFOTrig1	0
#define	RxFIFOTrig4	1
#define	RxFIFOTrig8	2
#define	RxFIFOTrig14	3

/*
 *    Dual-Ported RAM
 */
#define DRAM_global	0
#define INT_data	(DRAM_global + 0)
#define Config_base	(DRAM_global + 0x108)

#define IRQindex	(INT_data + 0)
#define IRQpending	(INT_data + 4)
#define IRQtable	(INT_data + 8)

/*
 *    Interrupt Status
 */
#define IntrRx		0x01	/* receiver data O.K.             */
#define IntrTx		0x02	/* transmit buffer empty  */
#define IntrFunc	0x04	/* function complete              */
#define IntrBreak	0x08	/* received break         */
#define IntrLine	0x10	/* line status change
				   for transmitter                */
#define IntrIntr	0x20	/* received INTR code             */
#define IntrQuit	0x40	/* received QUIT code             */
#define IntrEOF 	0x80	/* received EOF code              */

#define IntrRxTrigger 	0x100	/* rx data count reach tigger value */
#define IntrTxTrigger 	0x200	/* tx data count below trigger value */

#define Magic_no	(Config_base + 0)
#define Card_model_no	(Config_base + 2)
#define Total_ports	(Config_base + 4)
#define Module_cnt	(Config_base + 8)
#define Module_no	(Config_base + 10)
#define Timer_10ms	(Config_base + 14)
#define Disable_IRQ	(Config_base + 20)
#define TMS320_PORT1	(Config_base + 22)
#define TMS320_PORT2	(Config_base + 24)
#define TMS320_CLOCK	(Config_base + 26)

/*
 *    DATA BUFFER in DRAM
 */
#define Extern_table	0x400	/* Base address of the external table
				   (24 words *    64) total 3K bytes
				   (24 words * 128) total 6K bytes */
#define Extern_size	0x60	/* 96 bytes                       */
#define RXrptr		0x00	/* read pointer for RX buffer     */
#define RXwptr		0x02	/* write pointer for RX buffer    */
#define TXrptr		0x04	/* read pointer for TX buffer     */
#define TXwptr		0x06	/* write pointer for TX buffer    */
#define HostStat	0x08	/* IRQ flag and general flag      */
#define FlagStat	0x0A
#define FlowControl	0x0C	/* B7 B6 B5 B4 B3 B2 B1 B0              */
					/*  x  x  x  x  |  |  |  |            */
					/*              |  |  |  + CTS flow   */
					/*              |  |  +--- RTS flow   */
					/*              |  +------ TX Xon/Xoff */
					/*              +--------- RX Xon/Xoff */
#define Break_cnt	0x0E	/* received break count   */
#define CD180TXirq	0x10	/* if non-0: enable TX irq        */
#define RX_mask 	0x12
#define TX_mask 	0x14
#define Ofs_rxb 	0x16
#define Ofs_txb 	0x18
#define Page_rxb	0x1A
#define Page_txb	0x1C
#define EndPage_rxb	0x1E
#define EndPage_txb	0x20
#define Data_error	0x22
#define RxTrigger	0x28
#define TxTrigger	0x2a

#define rRXwptr 	0x34
#define Low_water	0x36

#define FuncCode	0x40
#define FuncArg 	0x42
#define FuncArg1	0x44

#define C218rx_size	0x2000	/* 8K bytes */
#define C218tx_size	0x8000	/* 32K bytes */

#define C218rx_mask	(C218rx_size - 1)
#define C218tx_mask	(C218tx_size - 1)

#define C320p8rx_size	0x2000
#define C320p8tx_size	0x8000
#define C320p8rx_mask	(C320p8rx_size - 1)
#define C320p8tx_mask	(C320p8tx_size - 1)

#define C320p16rx_size	0x2000
#define C320p16tx_size	0x4000
#define C320p16rx_mask	(C320p16rx_size - 1)
#define C320p16tx_mask	(C320p16tx_size - 1)

#define C320p24rx_size	0x2000
#define C320p24tx_size	0x2000
#define C320p24rx_mask	(C320p24rx_size - 1)
#define C320p24tx_mask	(C320p24tx_size - 1)

#define C320p32rx_size	0x1000
#define C320p32tx_size	0x1000
#define C320p32rx_mask	(C320p32rx_size - 1)
#define C320p32tx_mask	(C320p32tx_size - 1)

#define Page_size	0x2000
#define Page_mask	(Page_size - 1)
#define C218rx_spage	3
#define C218tx_spage	4
#define C218rx_pageno	1
#define C218tx_pageno	4
#define C218buf_pageno	5

#define C320p8rx_spage	3
#define C320p8tx_spage	4
#define C320p8rx_pgno	1
#define C320p8tx_pgno	4
#define C320p8buf_pgno	5

#define C320p16rx_spage 3
#define C320p16tx_spage 4
#define C320p16rx_pgno	1
#define C320p16tx_pgno	2
#define C320p16buf_pgno 3

#define C320p24rx_spage 3
#define C320p24tx_spage 4
#define C320p24rx_pgno	1
#define C320p24tx_pgno	1
#define C320p24buf_pgno 2

#define C320p32rx_spage 3
#define C320p32tx_ofs	C320p32rx_size
#define C320p32tx_spage 3
#define C320p32buf_pgno 1

/*
 *    Host Status
 */
#define WakeupRx	0x01
#define WakeupTx	0x02
#define WakeupBreak	0x08
#define WakeupLine	0x10
#define WakeupIntr	0x20
#define WakeupQuit	0x40
#define WakeupEOF	0x80	/* used in VTIME control */
#define WakeupRxTrigger	0x100
#define WakeupTxTrigger	0x200
/*
 *    Flag status
 */
#define Rx_over		0x01
#define Xoff_state	0x02
#define Tx_flowOff	0x04
#define Tx_enable	0x08
#define CTS_state	0x10
#define DSR_state	0x20
#define DCD_state	0x80
/*
 *    FlowControl
 */
#define CTS_FlowCtl	1
#define RTS_FlowCtl	2
#define Tx_FlowCtl	4
#define Rx_FlowCtl	8
#define IXM_IXANY	0x10

#define LowWater	128

#define DTR_ON		1
#define RTS_ON		2
#define CTS_ON		1
#define DSR_ON		2
#define DCD_ON		8

/* mode definition */
#define	MX_CS8		0x03
#define	MX_CS7		0x02
#define	MX_CS6		0x01
#define	MX_CS5		0x00

#define	MX_STOP1	0x00
#define	MX_STOP15	0x04
#define	MX_STOP2	0x08

#define	MX_PARNONE	0x00
#define	MX_PAREVEN	0x40
#define	MX_PARODD	0xC0

/*
 *    Query
 */
#define QueryPort	MAX_PORTS



struct mon_str {
	int tick;
	int rxcnt[MAX_PORTS];
	int txcnt[MAX_PORTS];
};
typedef struct mon_str mon_st;

#define 	DCD_changed	0x01
#define 	DCD_oldstate	0x80

static unsigned char moxaBuff[10240];
static void __iomem *moxaIntNdx[MAX_BOARDS];
static void __iomem *moxaIntPend[MAX_BOARDS];
static void __iomem *moxaIntTable[MAX_BOARDS];
static char moxaChkPort[MAX_PORTS];
static char moxaLineCtrl[MAX_PORTS];
static void __iomem *moxaTableAddr[MAX_PORTS];
static long moxaCurBaud[MAX_PORTS];
static char moxaDCDState[MAX_PORTS];
static char moxaLowChkFlag[MAX_PORTS];
static int moxaLowWaterChk;
static int moxaCard;
static mon_st moxaLog;
static int moxaFuncTout;
static ushort moxaBreakCnt[MAX_PORTS];

static void moxadelay(int);
static void moxafunc(void __iomem *, int, ushort);
static void wait_finish(void __iomem *);
static void low_water_check(void __iomem *);
static int moxaloadbios(int, unsigned char __user *, int);
static int moxafindcard(int);
static int moxaload320b(int, unsigned char __user *, int);
static int moxaloadcode(int, unsigned char __user *, int);
static int moxaloadc218(int, void __iomem *, int);
static int moxaloadc320(int, void __iomem *, int, int *);

/*****************************************************************************
 *	Driver level functions: 					     *
 *	1. MoxaDriverInit(void);					     *
 *	2. MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port);   *
 *	3. MoxaDriverPoll(void);					     *
 *****************************************************************************/
void MoxaDriverInit(void)
{
	int i;

	moxaFuncTout = HZ / 2;	/* 500 mini-seconds */
	moxaCard = 0;
	moxaLog.tick = 0;
	moxaLowWaterChk = 0;
	for (i = 0; i < MAX_PORTS; i++) {
		moxaChkPort[i] = 0;
		moxaLowChkFlag[i] = 0;
		moxaLineCtrl[i] = 0;
		moxaLog.rxcnt[i] = 0;
		moxaLog.txcnt[i] = 0;
	}
}

#define	MOXA		0x400
#define MOXA_GET_IQUEUE 	(MOXA + 1)	/* get input buffered count */
#define MOXA_GET_OQUEUE 	(MOXA + 2)	/* get output buffered count */
#define MOXA_INIT_DRIVER	(MOXA + 6)	/* moxaCard=0 */
#define MOXA_LOAD_BIOS		(MOXA + 9)	/* download BIOS */
#define MOXA_FIND_BOARD		(MOXA + 10)	/* Check if MOXA card exist? */
#define MOXA_LOAD_C320B		(MOXA + 11)	/* download 320B firmware */
#define MOXA_LOAD_CODE		(MOXA + 12)	/* download firmware */
#define MOXA_GETDATACOUNT       (MOXA + 23)
#define MOXA_GET_IOQUEUE	(MOXA + 27)
#define MOXA_FLUSH_QUEUE	(MOXA + 28)
#define MOXA_GET_CONF		(MOXA + 35)	/* configuration */
#define MOXA_GET_MAJOR          (MOXA + 63)
#define MOXA_GET_CUMAJOR        (MOXA + 64)
#define MOXA_GETMSTATUS         (MOXA + 65)


struct moxaq_str {
	int inq;
	int outq;
};

struct dl_str {
	char __user *buf;
	int len;
	int cardno;
};

static struct moxaq_str temp_queue[MAX_PORTS];
static struct dl_str dltmp;

void MoxaPortFlushData(int port, int mode)
{
	void __iomem *ofsAddr;
	if ((mode < 0) || (mode > 2))
		return;
	ofsAddr = moxaTableAddr[port];
	moxafunc(ofsAddr, FC_FlushQueue, mode);
	if (mode != 1) {
		moxaLowChkFlag[port] = 0;
		low_water_check(ofsAddr);
	}
}

int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port)
{
	int i;
	int status;
	int MoxaPortTxQueue(int), MoxaPortRxQueue(int);
	void __user *argp = (void __user *)arg;

	if (port == QueryPort) {
		if ((cmd != MOXA_GET_CONF) && (cmd != MOXA_INIT_DRIVER) &&
		    (cmd != MOXA_LOAD_BIOS) && (cmd != MOXA_FIND_BOARD) && (cmd != MOXA_LOAD_C320B) &&
		 (cmd != MOXA_LOAD_CODE) && (cmd != MOXA_GETDATACOUNT) &&
		  (cmd != MOXA_GET_IOQUEUE) && (cmd != MOXA_GET_MAJOR) &&
		    (cmd != MOXA_GET_CUMAJOR) && (cmd != MOXA_GETMSTATUS))
			return (-EINVAL);
	}
	switch (cmd) {
	case MOXA_GET_CONF:
		if(copy_to_user(argp, &moxa_boards, MAX_BOARDS * sizeof(moxa_board_conf)))
			return -EFAULT;
		return (0);
	case MOXA_INIT_DRIVER:
		if ((int) arg == 0x404)
			MoxaDriverInit();
		return (0);
	case MOXA_GETDATACOUNT:
		moxaLog.tick = jiffies;
		if(copy_to_user(argp, &moxaLog, sizeof(mon_st)))
			return -EFAULT;
		return (0);
	case MOXA_FLUSH_QUEUE:
		MoxaPortFlushData(port, arg);
		return (0);
	case MOXA_GET_IOQUEUE:
		for (i = 0; i < MAX_PORTS; i++) {
			if (moxaChkPort[i]) {
				temp_queue[i].inq = MoxaPortRxQueue(i);
				temp_queue[i].outq = MoxaPortTxQueue(i);
			}
		}
		if(copy_to_user(argp, temp_queue, sizeof(struct moxaq_str) * MAX_PORTS))
			return -EFAULT;
		return (0);
	case MOXA_GET_OQUEUE:
		i = MoxaPortTxQueue(port);
		return put_user(i, (unsigned long __user *)argp);
	case MOXA_GET_IQUEUE:
		i = MoxaPortRxQueue(port);
		return put_user(i, (unsigned long __user *)argp);
	case MOXA_GET_MAJOR:
		if(copy_to_user(argp, &ttymajor, sizeof(int)))
			return -EFAULT;
		return 0;
	case MOXA_GET_CUMAJOR:
		i = 0;
		if(copy_to_user(argp, &i, sizeof(int)))
			return -EFAULT;
		return 0;
	case MOXA_GETMSTATUS:
		for (i = 0; i < MAX_PORTS; i++) {
			GMStatus[i].ri = 0;
			GMStatus[i].dcd = 0;
			GMStatus[i].dsr = 0;
			GMStatus[i].cts = 0;
			if (!moxaChkPort[i]) {
				continue;
			} else {
				status = MoxaPortLineStatus(moxaChannels[i].port);
				if (status & 1)
					GMStatus[i].cts = 1;
				if (status & 2)
					GMStatus[i].dsr = 1;
				if (status & 4)
					GMStatus[i].dcd = 1;
			}

			if (!moxaChannels[i].tty || !moxaChannels[i].tty->termios)
				GMStatus[i].cflag = moxaChannels[i].cflag;
			else
				GMStatus[i].cflag = moxaChannels[i].tty->termios->c_cflag;
		}
		if(copy_to_user(argp, GMStatus, sizeof(struct mxser_mstatus) * MAX_PORTS))
			return -EFAULT;
		return 0;
	default:
		return (-ENOIOCTLCMD);
	case MOXA_LOAD_BIOS:
	case MOXA_FIND_BOARD:
	case MOXA_LOAD_C320B:
	case MOXA_LOAD_CODE:
		if (!capable(CAP_SYS_RAWIO))
			return -EPERM;
		break;
	}

	if(copy_from_user(&dltmp, argp, sizeof(struct dl_str)))
		return -EFAULT;
	if(dltmp.cardno < 0 || dltmp.cardno >= MAX_BOARDS)
		return -EINVAL;

	switch(cmd)
	{
	case MOXA_LOAD_BIOS:
		i = moxaloadbios(dltmp.cardno, dltmp.buf, dltmp.len);
		return (i);
	case MOXA_FIND_BOARD:
		return moxafindcard(dltmp.cardno);
	case MOXA_LOAD_C320B:
		moxaload320b(dltmp.cardno, dltmp.buf, dltmp.len);
	default: /* to keep gcc happy */
		return (0);
	case MOXA_LOAD_CODE:
		i = moxaloadcode(dltmp.cardno, dltmp.buf, dltmp.len);
		if (i == -1)
			return (-EFAULT);
		return (i);

	}
}

int MoxaDriverPoll(void)
{
	register ushort temp;
	register int card;
	void __iomem *ofsAddr;
	void __iomem *ip;
	int port, p, ports;

	if (moxaCard == 0)
		return (-1);
	for (card = 0; card < MAX_BOARDS; card++) {
	        if (loadstat[card] == 0)
			continue;
		if ((ports = moxa_boards[card].numPorts) == 0)
			continue;
		if (readb(moxaIntPend[card]) == 0xff) {
			ip = moxaIntTable[card] + readb(moxaIntNdx[card]);
			p = card * MAX_PORTS_PER_BOARD;
			ports <<= 1;
			for (port = 0; port < ports; port += 2, p++) {
				if ((temp = readw(ip + port)) != 0) {
					writew(0, ip + port);
					ofsAddr = moxaTableAddr[p];
					if (temp & IntrTx)
						writew(readw(ofsAddr + HostStat) & ~WakeupTx, ofsAddr + HostStat);
					if (temp & IntrBreak) {
						moxaBreakCnt[p]++;
					}
					if (temp & IntrLine) {
						if (readb(ofsAddr + FlagStat) & DCD_state) {
							if ((moxaDCDState[p] & DCD_oldstate) == 0)
								moxaDCDState[p] = (DCD_oldstate |
										   DCD_changed);
						} else {
							if (moxaDCDState[p] & DCD_oldstate)
								moxaDCDState[p] = DCD_changed;
						}
					}
				}
			}
			writeb(0, moxaIntPend[card]);
		}
		if (moxaLowWaterChk) {
			p = card * MAX_PORTS_PER_BOARD;
			for (port = 0; port < ports; port++, p++) {
				if (moxaLowChkFlag[p]) {
					moxaLowChkFlag[p] = 0;
					ofsAddr = moxaTableAddr[p];
					low_water_check(ofsAddr);
				}
			}
		}
	}
	moxaLowWaterChk = 0;
	return (0);
}

/*****************************************************************************
 *	Card level function:						     *
 *	1. MoxaPortsOfCard(int cardno); 				     *
 *****************************************************************************/
int MoxaPortsOfCard(int cardno)
{

	if (moxa_boards[cardno].boardType == 0)
		return (0);
	return (moxa_boards[cardno].numPorts);
}

/*****************************************************************************
 *	Port level functions:						     *
 *	1.  MoxaPortIsValid(int port);					     *
 *	2.  MoxaPortEnable(int port);					     *
 *	3.  MoxaPortDisable(int port);					     *
 *	4.  MoxaPortGetMaxBaud(int port);				     *
 *	5.  MoxaPortGetCurBaud(int port);				     *
 *	6.  MoxaPortSetBaud(int port, long baud);			     *
 *	7.  MoxaPortSetMode(int port, int databit, int stopbit, int parity); *
 *	8.  MoxaPortSetTermio(int port, unsigned char *termio); 	     *
 *	9.  MoxaPortGetLineOut(int port, int *dtrState, int *rtsState);      *
 *	10. MoxaPortLineCtrl(int port, int dtrState, int rtsState);	     *
 *	11. MoxaPortFlowCtrl(int port, int rts, int cts, int rx, int tx,int xany);    *
 *	12. MoxaPortLineStatus(int port);				     *
 *	13. MoxaPortDCDChange(int port);				     *
 *	14. MoxaPortDCDON(int port);					     *
 *	15. MoxaPortFlushData(int port, int mode);	                     *
 *	16. MoxaPortWriteData(int port, unsigned char * buffer, int length); *
 *	17. MoxaPortReadData(int port, struct tty_struct *tty); 	     *
 *	18. MoxaPortTxBufSize(int port);				     *
 *	19. MoxaPortRxBufSize(int port);				     *
 *	20. MoxaPortTxQueue(int port);					     *
 *	21. MoxaPortTxFree(int port);					     *
 *	22. MoxaPortRxQueue(int port);					     *
 *	23. MoxaPortRxFree(int port);					     *
 *	24. MoxaPortTxDisable(int port);				     *
 *	25. MoxaPortTxEnable(int port); 				     *
 *	26. MoxaPortGetBrkCnt(int port);				     *
 *	27. MoxaPortResetBrkCnt(int port);				     *
 *	28. MoxaPortSetXonXoff(int port, int xonValue, int xoffValue);	     *
 *	29. MoxaPortIsTxHold(int port); 				     *
 *	30. MoxaPortSendBreak(int port, int ticks);			     *
 *****************************************************************************/
/*
 *    Moxa Port Number Description:
 *
 *      MOXA serial driver supports up to 4 MOXA-C218/C320 boards. And,
 *      the port number using in MOXA driver functions will be 0 to 31 for
 *      first MOXA board, 32 to 63 for second, 64 to 95 for third and 96
 *      to 127 for fourth. For example, if you setup three MOXA boards,
 *      first board is C218, second board is C320-16 and third board is
 *      C320-32. The port number of first board (C218 - 8 ports) is from
 *      0 to 7. The port number of second board (C320 - 16 ports) is form
 *      32 to 47. The port number of third board (C320 - 32 ports) is from
 *      64 to 95. And those port numbers form 8 to 31, 48 to 63 and 96 to
 *      127 will be invalid.
 *
 *
 *      Moxa Functions Description:
 *
 *      Function 1:     Driver initialization routine, this routine must be
 *                      called when initialized driver.
 *      Syntax:
 *      void MoxaDriverInit();
 *
 *
 *      Function 2:     Moxa driver private IOCTL command processing.
 *      Syntax:
 *      int  MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port);
 *
 *           unsigned int cmd   : IOCTL command
 *           unsigned long arg  : IOCTL argument
 *           int port           : port number (0 - 127)
 *
 *           return:    0  (OK)
 *                      -EINVAL
 *                      -ENOIOCTLCMD
 *
 *
 *      Function 3:     Moxa driver polling process routine.
 *      Syntax:
 *      int  MoxaDriverPoll(void);
 *
 *           return:    0       ; polling O.K.
 *                      -1      : no any Moxa card.             
 *
 *
 *      Function 4:     Get the ports of this card.
 *      Syntax:
 *      int  MoxaPortsOfCard(int cardno);
 *
 *           int cardno         : card number (0 - 3)
 *
 *           return:    0       : this card is invalid
 *                      8/16/24/32
 *
 *
 *      Function 5:     Check this port is valid or invalid
 *      Syntax:
 *      int  MoxaPortIsValid(int port);
 *           int port           : port number (0 - 127, ref port description)
 *
 *           return:    0       : this port is invalid
 *                      1       : this port is valid
 *
 *
 *      Function 6:     Enable this port to start Tx/Rx data.
 *      Syntax:
 *      void MoxaPortEnable(int port);
 *           int port           : port number (0 - 127)
 *
 *
 *      Function 7:     Disable this port
 *      Syntax:
 *      void MoxaPortDisable(int port);
 *           int port           : port number (0 - 127)
 *
 *
 *      Function 8:     Get the maximun available baud rate of this port.
 *      Syntax:
 *      long MoxaPortGetMaxBaud(int port);
 *           int port           : port number (0 - 127)
 *
 *           return:    0       : this port is invalid
 *                      38400/57600/115200 bps
 *
 *
 *      Function 9:     Get the current baud rate of this port.
 *      Syntax:
 *      long MoxaPortGetCurBaud(int port);
 *           int port           : port number (0 - 127)
 *
 *           return:    0       : this port is invalid
 *                      50 - 115200 bps
 *
 *
 *      Function 10:    Setting baud rate of this port.
 *      Syntax:
 *      long MoxaPortSetBaud(int port, long baud);
 *           int port           : port number (0 - 127)
 *           long baud          : baud rate (50 - 115200)
 *
 *           return:    0       : this port is invalid or baud < 50
 *                      50 - 115200 : the real baud rate set to the port, if
 *                                    the argument baud is large than maximun
 *                                    available baud rate, the real setting
 *                                    baud rate will be the maximun baud rate.
 *
 *
 *      Function 11:    Setting the data-bits/stop-bits/parity of this port
 *      Syntax:
 *      int  MoxaPortSetMode(int port, int databits, int stopbits, int parity);
 *           int port           : port number (0 - 127)
 *           int databits       : data bits (8/7/6/5)
 *           int stopbits       : stop bits (2/1/0, 0 show 1.5 stop bits)
 int parity     : parity (0:None,1:Odd,2:Even,3:Mark,4:Space)
 *
 *           return:    -1      : invalid parameter
 *                      0       : setting O.K.
 *
 *
 *      Function 12:    Configure the port.
 *      Syntax:
 *      int  MoxaPortSetTermio(int port, struct termios *termio, speed_t baud);
 *           int port           : port number (0 - 127)
 *           struct termios * termio : termio structure pointer
 *	     speed_t baud	: baud rate
 *
 *           return:    -1      : this port is invalid or termio == NULL
 *                      0       : setting O.K.
 *
 *
 *      Function 13:    Get the DTR/RTS state of this port.
 *      Syntax:
 *      int  MoxaPortGetLineOut(int port, int *dtrState, int *rtsState);
 *           int port           : port number (0 - 127)
 *           int * dtrState     : pointer to INT to receive the current DTR
 *                                state. (if NULL, this function will not
 *                                write to this address)
 *           int * rtsState     : pointer to INT to receive the current RTS
 *                                state. (if NULL, this function will not
 *                                write to this address)
 *
 *           return:    -1      : this port is invalid
 *                      0       : O.K.
 *
 *
 *      Function 14:    Setting the DTR/RTS output state of this port.
 *      Syntax:
 *      void MoxaPortLineCtrl(int port, int dtrState, int rtsState);
 *           int port           : port number (0 - 127)
 *           int dtrState       : DTR output state (0: off, 1: on)
 *           int rtsState       : RTS output state (0: off, 1: on)
 *
 *
 *      Function 15:    Setting the flow control of this port.
 *      Syntax:
 *      void MoxaPortFlowCtrl(int port, int rtsFlow, int ctsFlow, int rxFlow,
 *                            int txFlow,int xany);
 *           int port           : port number (0 - 127)
 *           int rtsFlow        : H/W RTS flow control (0: no, 1: yes)
 *           int ctsFlow        : H/W CTS flow control (0: no, 1: yes)
 *           int rxFlow         : S/W Rx XON/XOFF flow control (0: no, 1: yes)
 *           int txFlow         : S/W Tx XON/XOFF flow control (0: no, 1: yes)
 *           int xany           : S/W XANY flow control (0: no, 1: yes)
 *
 *
 *      Function 16:    Get ths line status of this port
 *      Syntax:
 *      int  MoxaPortLineStatus(int port);
 *           int port           : port number (0 - 127)
 *
 *           return:    Bit 0 - CTS state (0: off, 1: on)
 *                      Bit 1 - DSR state (0: off, 1: on)
 *                      Bit 2 - DCD state (0: off, 1: on)
 *
 *
 *      Function 17:    Check the DCD state has changed since the last read
 *                      of this function.
 *      Syntax:
 *      int  MoxaPortDCDChange(int port);
 *           int port           : port number (0 - 127)
 *
 *           return:    0       : no changed
 *                      1       : DCD has changed
 *
 *
 *      Function 18:    Check ths current DCD state is ON or not.
 *      Syntax:
 *      int  MoxaPortDCDON(int port);
 *           int port           : port number (0 - 127)
 *
 *           return:    0       : DCD off
 *                      1       : DCD on
 *
 *
 *      Function 19:    Flush the Rx/Tx buffer data of this port.
 *      Syntax:
 *      void MoxaPortFlushData(int port, int mode);
 *           int port           : port number (0 - 127)
 *           int mode    
 *                      0       : flush the Rx buffer 
 *                      1       : flush the Tx buffer 
 *                      2       : flush the Rx and Tx buffer 
 *
 *
 *      Function 20:    Write data.
 *      Syntax:
 *      int  MoxaPortWriteData(int port, unsigned char * buffer, int length);
 *           int port           : port number (0 - 127)
 *           unsigned char * buffer     : pointer to write data buffer.
 *           int length         : write data length
 *
 *           return:    0 - length      : real write data length
 *
 *
 *      Function 21:    Read data.
 *      Syntax:
 *      int  MoxaPortReadData(int port, struct tty_struct *tty);
 *           int port           : port number (0 - 127)
 *	     struct tty_struct *tty : tty for data
 *
 *           return:    0 - length      : real read data length
 *
 *
 *      Function 22:    Get the Tx buffer size of this port
 *      Syntax:
 *      int  MoxaPortTxBufSize(int port);
 *           int port           : port number (0 - 127)
 *
 *           return:    ..      : Tx buffer size
 *
 *
 *      Function 23:    Get the Rx buffer size of this port
 *      Syntax:
 *      int  MoxaPortRxBufSize(int port);
 *           int port           : port number (0 - 127)
 *
 *           return:    ..      : Rx buffer size
 *
 *
 *      Function 24:    Get the Tx buffer current queued data bytes
 *      Syntax:
 *      int  MoxaPortTxQueue(int port);
 *           int port           : port number (0 - 127)
 *
 *           return:    ..      : Tx buffer current queued data bytes
 *
 *
 *      Function 25:    Get the Tx buffer current free space
 *      Syntax:
 *      int  MoxaPortTxFree(int port);
 *           int port           : port number (0 - 127)
 *
 *           return:    ..      : Tx buffer current free space
 *
 *
 *      Function 26:    Get the Rx buffer current queued data bytes
 *      Syntax:
 *      int  MoxaPortRxQueue(int port);
 *           int port           : port number (0 - 127)
 *
 *           return:    ..      : Rx buffer current queued data bytes
 *
 *
 *      Function 27:    Get the Rx buffer current free space
 *      Syntax:
 *      int  MoxaPortRxFree(int port);
 *           int port           : port number (0 - 127)
 *
 *           return:    ..      : Rx buffer current free space
 *
 *
 *      Function 28:    Disable port data transmission.
 *      Syntax:
 *      void MoxaPortTxDisable(int port);
 *           int port           : port number (0 - 127)
 *
 *
 *      Function 29:    Enable port data transmission.
 *      Syntax:
 *      void MoxaPortTxEnable(int port);
 *           int port           : port number (0 - 127)
 *
 *
 *      Function 30:    Get the received BREAK signal count.
 *      Syntax:
 *      int  MoxaPortGetBrkCnt(int port);
 *           int port           : port number (0 - 127)
 *
 *           return:    0 - ..  : BREAK signal count
 *
 *
 *      Function 31:    Get the received BREAK signal count and reset it.
 *      Syntax:
 *      int  MoxaPortResetBrkCnt(int port);
 *           int port           : port number (0 - 127)
 *
 *           return:    0 - ..  : BREAK signal count
 *
 *
 *      Function 32:    Set the S/W flow control new XON/XOFF value, default
 *                      XON is 0x11 & XOFF is 0x13.
 *      Syntax:
 *      void MoxaPortSetXonXoff(int port, int xonValue, int xoffValue);
 *           int port           : port number (0 - 127)
 *           int xonValue       : new XON value (0 - 255)
 *           int xoffValue      : new XOFF value (0 - 255)
 *
 *
 *      Function 33:    Check this port's transmission is hold by remote site
 *                      because the flow control.
 *      Syntax:
 *      int  MoxaPortIsTxHold(int port);
 *           int port           : port number (0 - 127)
 *
 *           return:    0       : normal
 *                      1       : hold by remote site
 *
 *
 *      Function 34:    Send out a BREAK signal.
 *      Syntax:
 *      void MoxaPortSendBreak(int port, int ms100);
 *           int port           : port number (0 - 127)
 *           int ms100          : break signal time interval.
 *                                unit: 100 mini-second. if ms100 == 0, it will
 *                                send out a about 250 ms BREAK signal.
 *
 */
int MoxaPortIsValid(int port)
{

	if (moxaCard == 0)
		return (0);
	if (moxaChkPort[port] == 0)
		return (0);
	return (1);
}

void MoxaPortEnable(int port)
{
	void __iomem *ofsAddr;
	int MoxaPortLineStatus(int);
	short lowwater = 512;

	ofsAddr = moxaTableAddr[port];
	writew(lowwater, ofsAddr + Low_water);
	moxaBreakCnt[port] = 0;
	if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
	    (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
		moxafunc(ofsAddr, FC_SetBreakIrq, 0);
	} else {
		writew(readw(ofsAddr + HostStat) | WakeupBreak, ofsAddr + HostStat);
	}

	moxafunc(ofsAddr, FC_SetLineIrq, Magic_code);
	moxafunc(ofsAddr, FC_FlushQueue, 2);

	moxafunc(ofsAddr, FC_EnableCH, Magic_code);
	MoxaPortLineStatus(port);
}

void MoxaPortDisable(int port)
{
	void __iomem *ofsAddr = moxaTableAddr[port];

	moxafunc(ofsAddr, FC_SetFlowCtl, 0);	/* disable flow control */
	moxafunc(ofsAddr, FC_ClrLineIrq, Magic_code);
	writew(0, ofsAddr + HostStat);
	moxafunc(ofsAddr, FC_DisableCH, Magic_code);
}

long MoxaPortGetMaxBaud(int port)
{
	if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
	    (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI))
		return (460800L);
	else
		return (921600L);
}


long MoxaPortSetBaud(int port, long baud)
{
	void __iomem *ofsAddr;
	long max, clock;
	unsigned int val;

	if ((baud < 50L) || ((max = MoxaPortGetMaxBaud(port)) == 0))
		return (0);
	ofsAddr = moxaTableAddr[port];
	if (baud > max)
		baud = max;
	if (max == 38400L)
		clock = 614400L;	/* for 9.8304 Mhz : max. 38400 bps */
	else if (max == 57600L)
		clock = 691200L;	/* for 11.0592 Mhz : max. 57600 bps */
	else
		clock = 921600L;	/* for 14.7456 Mhz : max. 115200 bps */
	val = clock / baud;
	moxafunc(ofsAddr, FC_SetBaud, val);
	baud = clock / val;
	moxaCurBaud[port] = baud;
	return (baud);
}

int MoxaPortSetTermio(int port, struct termios *termio, speed_t baud)
{
	void __iomem *ofsAddr;
	tcflag_t cflag;
	tcflag_t mode = 0;

	if (moxaChkPort[port] == 0 || termio == 0)
		return (-1);
	ofsAddr = moxaTableAddr[port];
	cflag = termio->c_cflag;	/* termio->c_cflag */

	mode = termio->c_cflag & CSIZE;
	if (mode == CS5)
		mode = MX_CS5;
	else if (mode == CS6)
		mode = MX_CS6;
	else if (mode == CS7)
		mode = MX_CS7;
	else if (mode == CS8)
		mode = MX_CS8;

	if (termio->c_cflag & CSTOPB) {
		if (mode == MX_CS5)
			mode |= MX_STOP15;
		else
			mode |= MX_STOP2;
	} else
		mode |= MX_STOP1;

	if (termio->c_cflag & PARENB) {
		if (termio->c_cflag & PARODD)
			mode |= MX_PARODD;
		else
			mode |= MX_PAREVEN;
	} else
		mode |= MX_PARNONE;

	moxafunc(ofsAddr, FC_SetDataMode, (ushort) mode);

	if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
	    (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
		if (baud >= 921600L)
			return (-1);
	}
	MoxaPortSetBaud(port, baud);

	if (termio->c_iflag & (IXON | IXOFF | IXANY)) {
		writeb(termio->c_cc[VSTART], ofsAddr + FuncArg);
		writeb(termio->c_cc[VSTOP], ofsAddr + FuncArg1);
		writeb(FC_SetXonXoff, ofsAddr + FuncCode);
		wait_finish(ofsAddr);

	}
	return (0);
}

int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState)
{

	if (!MoxaPortIsValid(port))
		return (-1);
	if (dtrState) {
		if (moxaLineCtrl[port] & DTR_ON)
			*dtrState = 1;
		else
			*dtrState = 0;
	}
	if (rtsState) {
		if (moxaLineCtrl[port] & RTS_ON)
			*rtsState = 1;
		else
			*rtsState = 0;
	}
	return (0);
}

void MoxaPortLineCtrl(int port, int dtr, int rts)
{
	void __iomem *ofsAddr;
	int mode;

	ofsAddr = moxaTableAddr[port];
	mode = 0;
	if (dtr)
		mode |= DTR_ON;
	if (rts)
		mode |= RTS_ON;
	moxaLineCtrl[port] = mode;
	moxafunc(ofsAddr, FC_LineControl, mode);
}

void MoxaPortFlowCtrl(int port, int rts, int cts, int txflow, int rxflow, int txany)
{
	void __iomem *ofsAddr;
	int mode;

	ofsAddr = moxaTableAddr[port];
	mode = 0;
	if (rts)
		mode |= RTS_FlowCtl;
	if (cts)
		mode |= CTS_FlowCtl;
	if (txflow)
		mode |= Tx_FlowCtl;
	if (rxflow)
		mode |= Rx_FlowCtl;
	if (txany)
		mode |= IXM_IXANY;
	moxafunc(ofsAddr, FC_SetFlowCtl, mode);
}

int MoxaPortLineStatus(int port)
{
	void __iomem *ofsAddr;
	int val;

	ofsAddr = moxaTableAddr[port];
	if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
	    (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
		moxafunc(ofsAddr, FC_LineStatus, 0);
		val = readw(ofsAddr + FuncArg);
	} else {
		val = readw(ofsAddr + FlagStat) >> 4;
	}
	val &= 0x0B;
	if (val & 8) {
		val |= 4;
		if ((moxaDCDState[port] & DCD_oldstate) == 0)
			moxaDCDState[port] = (DCD_oldstate | DCD_changed);
	} else {
		if (moxaDCDState[port] & DCD_oldstate)
			moxaDCDState[port] = DCD_changed;
	}
	val &= 7;
	return (val);
}

int MoxaPortDCDChange(int port)
{
	int n;

	if (moxaChkPort[port] == 0)
		return (0);
	n = moxaDCDState[port];
	moxaDCDState[port] &= ~DCD_changed;
	n &= DCD_changed;
	return (n);
}

int MoxaPortDCDON(int port)
{
	int n;

	if (moxaChkPort[port] == 0)
		return (0);
	if (moxaDCDState[port] & DCD_oldstate)
		n = 1;
	else
		n = 0;
	return (n);
}


/*
   int MoxaDumpMem(int port, unsigned char * buffer, int len)
   {
   int          i;
   unsigned long                baseAddr,ofsAddr,ofs;

   baseAddr = moxaBaseAddr[port / MAX_PORTS_PER_BOARD];
   ofs = baseAddr + DynPage_addr + pageofs;
   if (len > 0x2000L)
   len = 0x2000L;
   for (i = 0; i < len; i++)
   buffer[i] = readb(ofs+i);
   }
 */


int MoxaPortWriteData(int port, unsigned char * buffer, int len)
{
	int c, total, i;
	ushort tail;
	int cnt;
	ushort head, tx_mask, spage, epage;
	ushort pageno, pageofs, bufhead;
	void __iomem *baseAddr, *ofsAddr, *ofs;

	ofsAddr = moxaTableAddr[port];
	baseAddr = moxaBaseAddr[port / MAX_PORTS_PER_BOARD];
	tx_mask = readw(ofsAddr + TX_mask);
	spage = readw(ofsAddr + Page_txb);
	epage = readw(ofsAddr + EndPage_txb);
	tail = readw(ofsAddr + TXwptr);
	head = readw(ofsAddr + TXrptr);
	c = (head > tail) ? (head - tail - 1)
	    : (head - tail + tx_mask);
	if (c > len)
		c = len;
	moxaLog.txcnt[port] += c;
	total = c;
	if (spage == epage) {
		bufhead = readw(ofsAddr + Ofs_txb);
		writew(spage, baseAddr + Control_reg);
		while (c > 0) {
			if (head > tail)
				len = head - tail - 1;
			else
				len = tx_mask + 1 - tail;
			len = (c > len) ? len : c;
			ofs = baseAddr + DynPage_addr + bufhead + tail;
			for (i = 0; i < len; i++)
				writeb(*buffer++, ofs + i);
			tail = (tail + len) & tx_mask;
			c -= len;
		}
		writew(tail, ofsAddr + TXwptr);
	} else {
		len = c;
		pageno = spage + (tail >> 13);
		pageofs = tail & Page_mask;
		do {
			cnt = Page_size - pageofs;
			if (cnt > c)
				cnt = c;
			c -= cnt;
			writeb(pageno, baseAddr + Control_reg);
			ofs = baseAddr + DynPage_addr + pageofs;
			for (i = 0; i < cnt; i++)
				writeb(*buffer++, ofs + i);
			if (c == 0) {
				writew((tail + len) & tx_mask, ofsAddr + TXwptr);
				break;
			}
			if (++pageno == epage)
				pageno = spage;
			pageofs = 0;
		} while (1);
	}
	writeb(1, ofsAddr + CD180TXirq);	/* start to send */
	return (total);
}

int MoxaPortReadData(int port, struct tty_struct *tty)
{
	register ushort head, pageofs;
	int i, count, cnt, len, total, remain;
	ushort tail, rx_mask, spage, epage;
	ushort pageno, bufhead;
	void __iomem *baseAddr, *ofsAddr, *ofs;

	ofsAddr = moxaTableAddr[port];
	baseAddr = moxaBaseAddr[port / MAX_PORTS_PER_BOARD];
	head = readw(ofsAddr + RXrptr);
	tail = readw(ofsAddr + RXwptr);
	rx_mask = readw(ofsAddr + RX_mask);
	spage = readw(ofsAddr + Page_rxb);
	epage = readw(ofsAddr + EndPage_rxb);
	count = (tail >= head) ? (tail - head)
	    : (tail - head + rx_mask + 1);
	if (count == 0)
		return 0;

	total = count;
	remain = count - total;
	moxaLog.rxcnt[port] += total;
	count = total;
	if (spage == epage) {
		bufhead = readw(ofsAddr + Ofs_rxb);
		writew(spage, baseAddr + Control_reg);
		while (count > 0) {
			if (tail >= head)
				len = tail - head;
			else
				len = rx_mask + 1 - head;
			len = (count > len) ? len : count;
			ofs = baseAddr + DynPage_addr + bufhead + head;
			for (i = 0; i < len; i++)
				tty_insert_flip_char(tty, readb(ofs + i), TTY_NORMAL);
			head = (head + len) & rx_mask;
			count -= len;
		}
		writew(head, ofsAddr + RXrptr);
	} else {
		len = count;
		pageno = spage + (head >> 13);
		pageofs = head & Page_mask;
		do {
			cnt = Page_size - pageofs;
			if (cnt > count)
				cnt = count;
			count -= cnt;
			writew(pageno, baseAddr + Control_reg);
			ofs = baseAddr + DynPage_addr + pageofs;
			for (i = 0; i < cnt; i++)
				tty_insert_flip_char(tty, readb(ofs + i), TTY_NORMAL);
			if (count == 0) {
				writew((head + len) & rx_mask, ofsAddr + RXrptr);
				break;
			}
			if (++pageno == epage)
				pageno = spage;
			pageofs = 0;
		} while (1);
	}
	if ((readb(ofsAddr + FlagStat) & Xoff_state) && (remain < LowWater)) {
		moxaLowWaterChk = 1;
		moxaLowChkFlag[port] = 1;
	}
	return (total);
}


int MoxaPortTxQueue(int port)
{
	void __iomem *ofsAddr;
	ushort rptr, wptr, mask;
	int len;

	ofsAddr = moxaTableAddr[port];
	rptr = readw(ofsAddr + TXrptr);
	wptr = readw(ofsAddr + TXwptr);
	mask = readw(ofsAddr + TX_mask);
	len = (wptr - rptr) & mask;
	return (len);
}

int MoxaPortTxFree(int port)
{
	void __iomem *ofsAddr;
	ushort rptr, wptr, mask;
	int len;

	ofsAddr = moxaTableAddr[port];
	rptr = readw(ofsAddr + TXrptr);
	wptr = readw(ofsAddr + TXwptr);
	mask = readw(ofsAddr + TX_mask);
	len = mask - ((wptr - rptr) & mask);
	return (len);
}

int MoxaPortRxQueue(int port)
{
	void __iomem *ofsAddr;
	ushort rptr, wptr, mask;
	int len;

	ofsAddr = moxaTableAddr[port];
	rptr = readw(ofsAddr + RXrptr);
	wptr = readw(ofsAddr + RXwptr);
	mask = readw(ofsAddr + RX_mask);
	len = (wptr - rptr) & mask;
	return (len);
}


void MoxaPortTxDisable(int port)
{
	void __iomem *ofsAddr;

	ofsAddr = moxaTableAddr[port];
	moxafunc(ofsAddr, FC_SetXoffState, Magic_code);
}

void MoxaPortTxEnable(int port)
{
	void __iomem *ofsAddr;

	ofsAddr = moxaTableAddr[port];
	moxafunc(ofsAddr, FC_SetXonState, Magic_code);
}


int MoxaPortResetBrkCnt(int port)
{
	ushort cnt;
	cnt = moxaBreakCnt[port];
	moxaBreakCnt[port] = 0;
	return (cnt);
}


void MoxaPortSendBreak(int port, int ms100)
{
	void __iomem *ofsAddr;

	ofsAddr = moxaTableAddr[port];
	if (ms100) {
		moxafunc(ofsAddr, FC_SendBreak, Magic_code);
		moxadelay(ms100 * (HZ / 10));
	} else {
		moxafunc(ofsAddr, FC_SendBreak, Magic_code);
		moxadelay(HZ / 4);	/* 250 ms */
	}
	moxafunc(ofsAddr, FC_StopBreak, Magic_code);
}

static int moxa_get_serial_info(struct moxa_str *info,
				struct serial_struct __user *retinfo)
{
	struct serial_struct tmp;

	memset(&tmp, 0, sizeof(tmp));
	tmp.type = info->type;
	tmp.line = info->port;
	tmp.port = 0;
	tmp.irq = 0;
	tmp.flags = info->asyncflags;
	tmp.baud_base = 921600;
	tmp.close_delay = info->close_delay;
	tmp.closing_wait = info->closing_wait;
	tmp.custom_divisor = 0;
	tmp.hub6 = 0;
	if(copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
		return -EFAULT;
	return (0);
}


static int moxa_set_serial_info(struct moxa_str *info,
				struct serial_struct __user *new_info)
{
	struct serial_struct new_serial;

	if(copy_from_user(&new_serial, new_info, sizeof(new_serial)))
		return -EFAULT;

	if ((new_serial.irq != 0) ||
	    (new_serial.port != 0) ||
//           (new_serial.type != info->type) ||
	    (new_serial.custom_divisor != 0) ||
	    (new_serial.baud_base != 921600))
		return (-EPERM);

	if (!capable(CAP_SYS_ADMIN)) {
		if (((new_serial.flags & ~ASYNC_USR_MASK) !=
		     (info->asyncflags & ~ASYNC_USR_MASK)))
			return (-EPERM);
	} else {
		info->close_delay = new_serial.close_delay * HZ / 100;
		info->closing_wait = new_serial.closing_wait * HZ / 100;
	}

	new_serial.flags = (new_serial.flags & ~ASYNC_FLAGS);
	new_serial.flags |= (info->asyncflags & ASYNC_FLAGS);

	if (new_serial.type == PORT_16550A) {
		MoxaSetFifo(info->port, 1);
	} else {
		MoxaSetFifo(info->port, 0);
	}

	info->type = new_serial.type;
	return (0);
}



/*****************************************************************************
 *	Static local functions: 					     *
 *****************************************************************************/
/*
 * moxadelay - delays a specified number ticks
 */
static void moxadelay(int tick)
{
	unsigned long st, et;

	st = jiffies;
	et = st + tick;
	while (time_before(jiffies, et));
}

static void moxafunc(void __iomem *ofsAddr, int cmd, ushort arg)
{

	writew(arg, ofsAddr + FuncArg);
	writew(cmd, ofsAddr + FuncCode);
	wait_finish(ofsAddr);
}

static void wait_finish(void __iomem *ofsAddr)
{
	unsigned long i, j;

	i = jiffies;
	while (readw(ofsAddr + FuncCode) != 0) {
		j = jiffies;
		if ((j - i) > moxaFuncTout) {
			return;
		}
	}
}

static void low_water_check(void __iomem *ofsAddr)
{
	int len;
	ushort rptr, wptr, mask;

	if (readb(ofsAddr + FlagStat) & Xoff_state) {
		rptr = readw(ofsAddr + RXrptr);
		wptr = readw(ofsAddr + RXwptr);
		mask = readw(ofsAddr + RX_mask);
		len = (wptr - rptr) & mask;
		if (len <= Low_water)
			moxafunc(ofsAddr, FC_SendXon, 0);
	}
}

static int moxaloadbios(int cardno, unsigned char __user *tmp, int len)
{
	void __iomem *baseAddr;
	int i;

	if(copy_from_user(moxaBuff, tmp, len))
		return -EFAULT;
	baseAddr = moxaBaseAddr[cardno];
	writeb(HW_reset, baseAddr + Control_reg);	/* reset */
	moxadelay(1);		/* delay 10 ms */
	for (i = 0; i < 4096; i++)
		writeb(0, baseAddr + i);	/* clear fix page */
	for (i = 0; i < len; i++)
		writeb(moxaBuff[i], baseAddr + i);	/* download BIOS */
	writeb(0, baseAddr + Control_reg);	/* restart */
	return (0);
}

static int moxafindcard(int cardno)
{
	void __iomem *baseAddr;
	ushort tmp;

	baseAddr = moxaBaseAddr[cardno];
	switch (moxa_boards[cardno].boardType) {
	case MOXA_BOARD_C218_ISA:
	case MOXA_BOARD_C218_PCI:
		if ((tmp = readw(baseAddr + C218_key)) != C218_KeyCode) {
			return (-1);
		}
		break;
	case MOXA_BOARD_CP204J:
		if ((tmp = readw(baseAddr + C218_key)) != CP204J_KeyCode) {
			return (-1);
		}
		break;
	default:
		if ((tmp = readw(baseAddr + C320_key)) != C320_KeyCode) {
			return (-1);
		}
		if ((tmp = readw(baseAddr + C320_status)) != STS_init) {
			return (-2);
		}
	}
	return (0);
}

static int moxaload320b(int cardno, unsigned char __user *tmp, int len)
{
	void __iomem *baseAddr;
	int i;

	if(len > sizeof(moxaBuff))
		return -EINVAL;
	if(copy_from_user(moxaBuff, tmp, len))
		return -EFAULT;
	baseAddr = moxaBaseAddr[cardno];
	writew(len - 7168 - 2, baseAddr + C320bapi_len);
	writeb(1, baseAddr + Control_reg);	/* Select Page 1 */
	for (i = 0; i < 7168; i++)
		writeb(moxaBuff[i], baseAddr + DynPage_addr + i);
	writeb(2, baseAddr + Control_reg);	/* Select Page 2 */
	for (i = 0; i < (len - 7168); i++)
		writeb(moxaBuff[i + 7168], baseAddr + DynPage_addr + i);
	return (0);
}

static int moxaloadcode(int cardno, unsigned char __user *tmp, int len)
{
	void __iomem *baseAddr, *ofsAddr;
	int retval, port, i;

	if(copy_from_user(moxaBuff, tmp, len))
		return -EFAULT;
	baseAddr = moxaBaseAddr[cardno];
	switch (moxa_boards[cardno].boardType) {
	case MOXA_BOARD_C218_ISA:
	case MOXA_BOARD_C218_PCI:
	case MOXA_BOARD_CP204J:
		retval = moxaloadc218(cardno, baseAddr, len);
		if (retval)
			return (retval);
		port = cardno * MAX_PORTS_PER_BOARD;
		for (i = 0; i < moxa_boards[cardno].numPorts; i++, port++) {
			moxaChkPort[port] = 1;
			moxaCurBaud[port] = 9600L;
			moxaDCDState[port] = 0;
			moxaTableAddr[port] = baseAddr + Extern_table + Extern_size * i;
			ofsAddr = moxaTableAddr[port];
			writew(C218rx_mask, ofsAddr + RX_mask);
			writew(C218tx_mask, ofsAddr + TX_mask);
			writew(C218rx_spage + i * C218buf_pageno, ofsAddr + Page_rxb);
			writew(readw(ofsAddr + Page_rxb) + C218rx_pageno, ofsAddr + EndPage_rxb);

			writew(C218tx_spage + i * C218buf_pageno, ofsAddr + Page_txb);
			writew(readw(ofsAddr + Page_txb) + C218tx_pageno, ofsAddr + EndPage_txb);

		}
		break;
	default:
		retval = moxaloadc320(cardno, baseAddr, len,
				      &moxa_boards[cardno].numPorts);
		if (retval)
			return (retval);
		port = cardno * MAX_PORTS_PER_BOARD;
		for (i = 0; i < moxa_boards[cardno].numPorts; i++, port++) {
			moxaChkPort[port] = 1;
			moxaCurBaud[port] = 9600L;
			moxaDCDState[port] = 0;
			moxaTableAddr[port] = baseAddr + Extern_table + Extern_size * i;
			ofsAddr = moxaTableAddr[port];
			if (moxa_boards[cardno].numPorts == 8) {
				writew(C320p8rx_mask, ofsAddr + RX_mask);
				writew(C320p8tx_mask, ofsAddr + TX_mask);
				writew(C320p8rx_spage + i * C320p8buf_pgno, ofsAddr + Page_rxb);
				writew(readw(ofsAddr + Page_rxb) + C320p8rx_pgno, ofsAddr + EndPage_rxb);
				writew(C320p8tx_spage + i * C320p8buf_pgno, ofsAddr + Page_txb);
				writew(readw(ofsAddr + Page_txb) + C320p8tx_pgno, ofsAddr + EndPage_txb);

			} else if (moxa_boards[cardno].numPorts == 16) {
				writew(C320p16rx_mask, ofsAddr + RX_mask);
				writew(C320p16tx_mask, ofsAddr + TX_mask);
				writew(C320p16rx_spage + i * C320p16buf_pgno, ofsAddr + Page_rxb);
				writew(readw(ofsAddr + Page_rxb) + C320p16rx_pgno, ofsAddr + EndPage_rxb);
				writew(C320p16tx_spage + i * C320p16buf_pgno, ofsAddr + Page_txb);
				writew(readw(ofsAddr + Page_txb) + C320p16tx_pgno, ofsAddr + EndPage_txb);

			} else if (moxa_boards[cardno].numPorts == 24) {
				writew(C320p24rx_mask, ofsAddr + RX_mask);
				writew(C320p24tx_mask, ofsAddr + TX_mask);
				writew(C320p24rx_spage + i * C320p24buf_pgno, ofsAddr + Page_rxb);
				writew(readw(ofsAddr + Page_rxb) + C320p24rx_pgno, ofsAddr + EndPage_rxb);
				writew(C320p24tx_spage + i * C320p24buf_pgno, ofsAddr + Page_txb);
				writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb);
			} else if (moxa_boards[cardno].numPorts == 32) {
				writew(C320p32rx_mask, ofsAddr + RX_mask);
				writew(C320p32tx_mask, ofsAddr + TX_mask);
				writew(C320p32tx_ofs, ofsAddr + Ofs_txb);
				writew(C320p32rx_spage + i * C320p32buf_pgno, ofsAddr + Page_rxb);
				writew(readb(ofsAddr + Page_rxb), ofsAddr + EndPage_rxb);
				writew(C320p32tx_spage + i * C320p32buf_pgno, ofsAddr + Page_txb);
				writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb);
			}
		}
		break;
	}
	loadstat[cardno] = 1;
	return (0);
}

static int moxaloadc218(int cardno, void __iomem *baseAddr, int len)
{
	char retry;
	int i, j, len1, len2;
	ushort usum, *ptr, keycode;

	if (moxa_boards[cardno].boardType == MOXA_BOARD_CP204J)
		keycode = CP204J_KeyCode;
	else
		keycode = C218_KeyCode;
	usum = 0;
	len1 = len >> 1;
	ptr = (ushort *) moxaBuff;
	for (i = 0; i < len1; i++)
		usum += le16_to_cpu(*(ptr + i));
	retry = 0;
	do {
		len1 = len >> 1;
		j = 0;
		while (len1) {
			len2 = (len1 > 2048) ? 2048 : len1;
			len1 -= len2;
			for (i = 0; i < len2 << 1; i++)
				writeb(moxaBuff[i + j], baseAddr + C218_LoadBuf + i);
			j += i;

			writew(len2, baseAddr + C218DLoad_len);
			writew(0, baseAddr + C218_key);
			for (i = 0; i < 100; i++) {
				if (readw(baseAddr + C218_key) == keycode)
					break;
				moxadelay(1);	/* delay 10 ms */
			}
			if (readw(baseAddr + C218_key) != keycode) {
				return (-1);
			}
		}
		writew(0, baseAddr + C218DLoad_len);
		writew(usum, baseAddr + C218check_sum);
		writew(0, baseAddr + C218_key);
		for (i = 0; i < 100; i++) {
			if (readw(baseAddr + C218_key) == keycode)
				break;
			moxadelay(1);	/* delay 10 ms */
		}
		retry++;
	} while ((readb(baseAddr + C218chksum_ok) != 1) && (retry < 3));
	if (readb(baseAddr + C218chksum_ok) != 1) {
		return (-1);
	}
	writew(0, baseAddr + C218_key);
	for (i = 0; i < 100; i++) {
		if (readw(baseAddr + Magic_no) == Magic_code)
			break;
		moxadelay(1);	/* delay 10 ms */
	}
	if (readw(baseAddr + Magic_no) != Magic_code) {
		return (-1);
	}
	writew(1, baseAddr + Disable_IRQ);
	writew(0, baseAddr + Magic_no);
	for (i = 0; i < 100; i++) {
		if (readw(baseAddr + Magic_no) == Magic_code)
			break;
		moxadelay(1);	/* delay 10 ms */
	}
	if (readw(baseAddr + Magic_no) != Magic_code) {
		return (-1);
	}
	moxaCard = 1;
	moxaIntNdx[cardno] = baseAddr + IRQindex;
	moxaIntPend[cardno] = baseAddr + IRQpending;
	moxaIntTable[cardno] = baseAddr + IRQtable;
	return (0);
}

static int moxaloadc320(int cardno, void __iomem *baseAddr, int len, int *numPorts)
{
	ushort usum;
	int i, j, wlen, len2, retry;
	ushort *uptr;

	usum = 0;
	wlen = len >> 1;
	uptr = (ushort *) moxaBuff;
	for (i = 0; i < wlen; i++)
		usum += le16_to_cpu(uptr[i]);
	retry = 0;
	j = 0;
	do {
		while (wlen) {
			if (wlen > 2048)
				len2 = 2048;
			else
				len2 = wlen;
			wlen -= len2;
			len2 <<= 1;
			for (i = 0; i < len2; i++)
				writeb(moxaBuff[j + i], baseAddr + C320_LoadBuf + i);
			len2 >>= 1;
			j += i;
			writew(len2, baseAddr + C320DLoad_len);
			writew(0, baseAddr + C320_key);
			for (i = 0; i < 10; i++) {
				if (readw(baseAddr + C320_key) == C320_KeyCode)
					break;
				moxadelay(1);
			}
			if (readw(baseAddr + C320_key) != C320_KeyCode)
				return (-1);
		}
		writew(0, baseAddr + C320DLoad_len);
		writew(usum, baseAddr + C320check_sum);
		writew(0, baseAddr + C320_key);
		for (i = 0; i < 10; i++) {
			if (readw(baseAddr + C320_key) == C320_KeyCode)
				break;
			moxadelay(1);
		}
		retry++;
	} while ((readb(baseAddr + C320chksum_ok) != 1) && (retry < 3));
	if (readb(baseAddr + C320chksum_ok) != 1)
		return (-1);
	writew(0, baseAddr + C320_key);
	for (i = 0; i < 600; i++) {
		if (readw(baseAddr + Magic_no) == Magic_code)
			break;
		moxadelay(1);
	}
	if (readw(baseAddr + Magic_no) != Magic_code)
		return (-100);

	if (moxa_boards[cardno].busType == MOXA_BUS_TYPE_PCI) {		/* ASIC board */
		writew(0x3800, baseAddr + TMS320_PORT1);
		writew(0x3900, baseAddr + TMS320_PORT2);
		writew(28499, baseAddr + TMS320_CLOCK);
	} else {
		writew(0x3200, baseAddr + TMS320_PORT1);
		writew(0x3400, baseAddr + TMS320_PORT2);
		writew(19999, baseAddr + TMS320_CLOCK);
	}
	writew(1, baseAddr + Disable_IRQ);
	writew(0, baseAddr + Magic_no);
	for (i = 0; i < 500; i++) {
		if (readw(baseAddr + Magic_no) == Magic_code)
			break;
		moxadelay(1);
	}
	if (readw(baseAddr + Magic_no) != Magic_code)
		return (-102);

	j = readw(baseAddr + Module_cnt);
	if (j <= 0)
		return (-101);
	*numPorts = j * 8;
	writew(j, baseAddr + Module_no);
	writew(0, baseAddr + Magic_no);
	for (i = 0; i < 600; i++) {
		if (readw(baseAddr + Magic_no) == Magic_code)
			break;
		moxadelay(1);
	}
	if (readw(baseAddr + Magic_no) != Magic_code)
		return (-102);
	moxaCard = 1;
	moxaIntNdx[cardno] = baseAddr + IRQindex;
	moxaIntPend[cardno] = baseAddr + IRQpending;
	moxaIntTable[cardno] = baseAddr + IRQtable;
	return (0);
}

#if 0
long MoxaPortGetCurBaud(int port)
{

	if (moxaChkPort[port] == 0)
		return (0);
	return (moxaCurBaud[port]);
}
#endif  /*  0  */

static void MoxaSetFifo(int port, int enable)
{
	void __iomem *ofsAddr = moxaTableAddr[port];

	if (!enable) {
		moxafunc(ofsAddr, FC_SetRxFIFOTrig, 0);
		moxafunc(ofsAddr, FC_SetTxFIFOCnt, 1);
	} else {
		moxafunc(ofsAddr, FC_SetRxFIFOTrig, 3);
		moxafunc(ofsAddr, FC_SetTxFIFOCnt, 16);
	}
}

#if 0
int MoxaPortSetMode(int port, int databits, int stopbits, int parity)
{
	void __iomem *ofsAddr;
	int val;

	val = 0;
	switch (databits) {
	case 5:
		val |= 0;
		break;
	case 6:
		val |= 1;
		break;
	case 7:
		val |= 2;
		break;
	case 8:
		val |= 3;
		break;
	default:
		return (-1);
	}
	switch (stopbits) {
	case 0:
		val |= 0;
		break;		/* stop bits 1.5 */
	case 1:
		val |= 0;
		break;
	case 2:
		val |= 4;
		break;
	default:
		return (-1);
	}
	switch (parity) {
	case 0:
		val |= 0x00;
		break;		/* None  */
	case 1:
		val |= 0x08;
		break;		/* Odd   */
	case 2:
		val |= 0x18;
		break;		/* Even  */
	case 3:
		val |= 0x28;
		break;		/* Mark  */
	case 4:
		val |= 0x38;
		break;		/* Space */
	default:
		return (-1);
	}
	ofsAddr = moxaTableAddr[port];
	moxafunc(ofsAddr, FC_SetMode, val);
	return (0);
}

int MoxaPortTxBufSize(int port)
{
	void __iomem *ofsAddr;
	int size;

	ofsAddr = moxaTableAddr[port];
	size = readw(ofsAddr + TX_mask);
	return (size);
}

int MoxaPortRxBufSize(int port)
{
	void __iomem *ofsAddr;
	int size;

	ofsAddr = moxaTableAddr[port];
	size = readw(ofsAddr + RX_mask);
	return (size);
}

int MoxaPortRxFree(int port)
{
	void __iomem *ofsAddr;
	ushort rptr, wptr, mask;
	int len;

	ofsAddr = moxaTableAddr[port];
	rptr = readw(ofsAddr + RXrptr);
	wptr = readw(ofsAddr + RXwptr);
	mask = readw(ofsAddr + RX_mask);
	len = mask - ((wptr - rptr) & mask);
	return (len);
}
int MoxaPortGetBrkCnt(int port)
{
	return (moxaBreakCnt[port]);
}

void MoxaPortSetXonXoff(int port, int xonValue, int xoffValue)
{
	void __iomem *ofsAddr;

	ofsAddr = moxaTableAddr[port];
	writew(xonValue, ofsAddr + FuncArg);
	writew(xoffValue, ofsAddr + FuncArg1);
	writew(FC_SetXonXoff, ofsAddr + FuncCode);
	wait_finish(ofsAddr);
}

int MoxaPortIsTxHold(int port)
{
	void __iomem *ofsAddr;
	int val;

	ofsAddr = moxaTableAddr[port];
	if ((moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_ISA) ||
	    (moxa_boards[port / MAX_PORTS_PER_BOARD].boardType == MOXA_BOARD_C320_PCI)) {
		moxafunc(ofsAddr, FC_GetCCSR, 0);
		val = readw(ofsAddr + FuncArg);
		if (val & 0x04)
			return (1);
	} else {
		if (readw(ofsAddr + FlagStat) & Tx_flowOff)
			return (1);
	}
	return (0);
}
#endif