aboutsummaryrefslogtreecommitdiff
path: root/drivers/scsi/qla1280.c
blob: 146d540f6281fdd0917258fac03ae8c7eeef87e8 (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
3167
3168
3169
3170
3171
3172
3173
3174
3175
3176
3177
3178
3179
3180
3181
3182
3183
3184
3185
3186
3187
3188
3189
3190
3191
3192
3193
3194
3195
3196
3197
3198
3199
3200
3201
3202
3203
3204
3205
3206
3207
3208
3209
3210
3211
3212
3213
3214
3215
3216
3217
3218
3219
3220
3221
3222
3223
3224
3225
3226
3227
3228
3229
3230
3231
3232
3233
3234
3235
3236
3237
3238
3239
3240
3241
3242
3243
3244
3245
3246
3247
3248
3249
3250
3251
3252
3253
3254
3255
3256
3257
3258
3259
3260
3261
3262
3263
3264
3265
3266
3267
3268
3269
3270
3271
3272
3273
3274
3275
3276
3277
3278
3279
3280
3281
3282
3283
3284
3285
3286
3287
3288
3289
3290
3291
3292
3293
3294
3295
3296
3297
3298
3299
3300
3301
3302
3303
3304
3305
3306
3307
3308
3309
3310
3311
3312
3313
3314
3315
3316
3317
3318
3319
3320
3321
3322
3323
3324
3325
3326
3327
3328
3329
3330
3331
3332
3333
3334
3335
3336
3337
3338
3339
3340
3341
3342
3343
3344
3345
3346
3347
3348
3349
3350
3351
3352
3353
3354
3355
3356
3357
3358
3359
3360
3361
3362
3363
3364
3365
3366
3367
3368
3369
3370
3371
3372
3373
3374
3375
3376
3377
3378
3379
3380
3381
3382
3383
3384
3385
3386
3387
3388
3389
3390
3391
3392
3393
3394
3395
3396
3397
3398
3399
3400
3401
3402
3403
3404
3405
3406
3407
3408
3409
3410
3411
3412
3413
3414
3415
3416
3417
3418
3419
3420
3421
3422
3423
3424
3425
3426
3427
3428
3429
3430
3431
3432
3433
3434
3435
3436
3437
3438
3439
3440
3441
3442
3443
3444
3445
3446
3447
3448
3449
3450
3451
3452
3453
3454
3455
3456
3457
3458
3459
3460
3461
3462
3463
3464
3465
3466
3467
3468
3469
3470
3471
3472
3473
3474
3475
3476
3477
3478
3479
3480
3481
3482
3483
3484
3485
3486
3487
3488
3489
3490
3491
3492
3493
3494
3495
3496
3497
3498
3499
3500
3501
3502
3503
3504
3505
3506
3507
3508
3509
3510
3511
3512
3513
3514
3515
3516
3517
3518
3519
3520
3521
3522
3523
3524
3525
3526
3527
3528
3529
3530
3531
3532
3533
3534
3535
3536
3537
3538
3539
3540
3541
3542
3543
3544
3545
3546
3547
3548
3549
3550
3551
3552
3553
3554
3555
3556
3557
3558
3559
3560
3561
3562
3563
3564
3565
3566
3567
3568
3569
3570
3571
3572
3573
3574
3575
3576
3577
3578
3579
3580
3581
3582
3583
3584
3585
3586
3587
3588
3589
3590
3591
3592
3593
3594
3595
3596
3597
3598
3599
3600
3601
3602
3603
3604
3605
3606
3607
3608
3609
3610
3611
3612
3613
3614
3615
3616
3617
3618
3619
3620
3621
3622
3623
3624
3625
3626
3627
3628
3629
3630
3631
3632
3633
3634
3635
3636
3637
3638
3639
3640
3641
3642
3643
3644
3645
3646
3647
3648
3649
3650
3651
3652
3653
3654
3655
3656
3657
3658
3659
3660
3661
3662
3663
3664
3665
3666
3667
3668
3669
3670
3671
3672
3673
3674
3675
3676
3677
3678
3679
3680
3681
3682
3683
3684
3685
3686
3687
3688
3689
3690
3691
3692
3693
3694
3695
3696
3697
3698
3699
3700
3701
3702
3703
3704
3705
3706
3707
3708
3709
3710
3711
3712
3713
3714
3715
3716
3717
3718
3719
3720
3721
3722
3723
3724
3725
3726
3727
3728
3729
3730
3731
3732
3733
3734
3735
3736
3737
3738
3739
3740
3741
3742
3743
3744
3745
3746
3747
3748
3749
3750
3751
3752
3753
3754
3755
3756
3757
3758
3759
3760
3761
3762
3763
3764
3765
3766
3767
3768
3769
3770
3771
3772
3773
3774
3775
3776
3777
3778
3779
3780
3781
3782
3783
3784
3785
3786
3787
3788
3789
3790
3791
3792
3793
3794
3795
3796
3797
3798
3799
3800
3801
3802
3803
3804
3805
3806
3807
3808
3809
3810
3811
3812
3813
3814
3815
3816
3817
3818
3819
3820
3821
3822
3823
3824
3825
3826
3827
3828
3829
3830
3831
3832
3833
3834
3835
3836
3837
3838
3839
3840
3841
3842
3843
3844
3845
3846
3847
3848
3849
3850
3851
3852
3853
3854
3855
3856
3857
3858
3859
3860
3861
3862
3863
3864
3865
3866
3867
3868
3869
3870
3871
3872
3873
3874
3875
3876
3877
3878
3879
3880
3881
3882
3883
3884
3885
3886
3887
3888
3889
3890
3891
3892
3893
3894
3895
3896
3897
3898
3899
3900
3901
3902
3903
3904
3905
3906
3907
3908
3909
3910
3911
3912
3913
3914
3915
3916
3917
3918
3919
3920
3921
3922
3923
3924
3925
3926
3927
3928
3929
3930
3931
3932
3933
3934
3935
3936
3937
3938
3939
3940
3941
3942
3943
3944
3945
3946
3947
3948
3949
3950
3951
3952
3953
3954
3955
3956
3957
3958
3959
3960
3961
3962
3963
3964
3965
3966
3967
3968
3969
3970
3971
3972
3973
3974
3975
3976
3977
3978
3979
3980
3981
3982
3983
3984
3985
3986
3987
3988
3989
3990
3991
3992
3993
3994
3995
3996
3997
3998
3999
4000
4001
4002
4003
4004
4005
4006
4007
4008
4009
4010
4011
4012
4013
4014
4015
4016
4017
4018
4019
4020
4021
4022
4023
4024
4025
4026
4027
4028
4029
4030
4031
4032
4033
4034
4035
4036
4037
4038
4039
4040
4041
4042
4043
4044
4045
4046
4047
4048
4049
4050
4051
4052
4053
4054
4055
4056
4057
4058
4059
4060
4061
4062
4063
4064
4065
4066
4067
4068
4069
4070
4071
4072
4073
4074
4075
4076
4077
4078
4079
4080
4081
4082
4083
4084
4085
4086
4087
4088
4089
4090
4091
4092
4093
4094
4095
4096
4097
4098
4099
4100
4101
4102
4103
4104
4105
4106
4107
4108
4109
4110
4111
4112
4113
4114
4115
4116
4117
4118
4119
4120
4121
4122
4123
4124
4125
4126
4127
4128
4129
4130
4131
4132
4133
4134
4135
4136
4137
4138
4139
4140
4141
4142
4143
4144
4145
4146
4147
4148
4149
4150
4151
4152
4153
4154
4155
4156
4157
4158
4159
4160
4161
4162
4163
4164
4165
4166
4167
4168
4169
4170
4171
4172
4173
4174
4175
4176
4177
4178
4179
4180
4181
4182
4183
4184
4185
4186
4187
4188
4189
4190
4191
4192
4193
4194
4195
4196
4197
4198
4199
4200
4201
4202
4203
4204
4205
4206
4207
4208
4209
4210
4211
4212
4213
4214
4215
4216
4217
4218
4219
4220
4221
4222
4223
4224
4225
4226
4227
4228
4229
4230
4231
4232
4233
4234
4235
4236
4237
4238
4239
4240
4241
4242
4243
4244
4245
4246
4247
4248
4249
4250
4251
4252
4253
4254
4255
4256
4257
4258
4259
4260
4261
4262
4263
4264
4265
4266
4267
4268
4269
4270
4271
4272
4273
4274
4275
4276
4277
4278
4279
4280
4281
4282
4283
4284
4285
4286
4287
4288
4289
4290
4291
4292
4293
4294
4295
4296
4297
4298
4299
4300
4301
4302
4303
4304
4305
4306
4307
4308
4309
4310
4311
4312
4313
4314
4315
4316
4317
4318
4319
4320
4321
4322
4323
4324
4325
4326
4327
4328
4329
4330
4331
4332
4333
4334
4335
4336
4337
4338
4339
4340
4341
4342
4343
4344
4345
4346
4347
4348
4349
4350
4351
4352
4353
4354
4355
4356
4357
4358
4359
4360
4361
4362
4363
4364
4365
4366
4367
4368
4369
4370
4371
4372
4373
4374
4375
4376
4377
4378
4379
4380
4381
4382
4383
4384
4385
4386
4387
4388
4389
4390
4391
4392
4393
4394
4395
4396
4397
4398
4399
4400
4401
4402
4403
4404
4405
4406
4407
4408
4409
4410
4411
4412
4413
4414
4415
4416
4417
4418
4419
4420
4421
4422
4423
4424
4425
4426
4427
4428
4429
4430
4431
4432
4433
4434
4435
4436
4437
4438
4439
4440
4441
4442
4443
4444
4445
4446
4447
4448
4449
4450
4451
4452
4453
4454
4455
4456
4457
4458
4459
4460
4461
4462
4463
4464
4465
4466
4467
4468
4469
4470
4471
4472
/******************************************************************************
*                  QLOGIC LINUX SOFTWARE
*
* QLogic  QLA1280 (Ultra2)  and  QLA12160 (Ultra3) SCSI driver
* Copyright (C) 2000 Qlogic Corporation (www.qlogic.com)
* Copyright (C) 2001-2004 Jes Sorensen, Wild Open Source Inc.
* Copyright (C) 2003-2004 Christoph Hellwig
*
* 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, 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.
*
******************************************************************************/
#define QLA1280_VERSION      "3.26"
/*****************************************************************************
    Revision History:
    Rev  3.26, January 16, 2006 Jes Sorensen
	- Ditch all < 2.6 support
    Rev  3.25.1, February 10, 2005 Christoph Hellwig
	- use pci_map_single to map non-S/G requests
	- remove qla1280_proc_info
    Rev  3.25, September 28, 2004, Christoph Hellwig
	- add support for ISP1020/1040
	- don't include "scsi.h" anymore for 2.6.x
    Rev  3.24.4 June 7, 2004 Christoph Hellwig
	- restructure firmware loading, cleanup initialization code
	- prepare support for ISP1020/1040 chips
    Rev  3.24.3 January 19, 2004, Jes Sorensen
	- Handle PCI DMA mask settings correctly
	- Correct order of error handling in probe_one, free_irq should not
	  be called if request_irq failed
    Rev  3.24.2 January 19, 2004, James Bottomley & Andrew Vasquez
	- Big endian fixes (James)
	- Remove bogus IOCB content on zero data transfer commands (Andrew)
    Rev  3.24.1 January 5, 2004, Jes Sorensen
	- Initialize completion queue to avoid OOPS on probe
	- Handle interrupts during mailbox testing
    Rev  3.24 November 17, 2003, Christoph Hellwig
    	- use struct list_head for completion queue
	- avoid old Scsi_FOO typedefs
	- cleanup 2.4 compat glue a bit
	- use <scsi/scsi_*.h> headers on 2.6 instead of "scsi.h"
	- make initialization for memory mapped vs port I/O more similar
	- remove broken pci config space manipulation
	- kill more cruft
	- this is an almost perfect 2.6 scsi driver now! ;)
    Rev  3.23.39 December 17, 2003, Jes Sorensen
	- Delete completion queue from srb if mailbox command failed to
	  to avoid qla1280_done completeting qla1280_error_action's
	  obsolete context
	- Reduce arguments for qla1280_done
    Rev  3.23.38 October 18, 2003, Christoph Hellwig
	- Convert to new-style hotplugable driver for 2.6
	- Fix missing scsi_unregister/scsi_host_put on HBA removal
	- Kill some more cruft
    Rev  3.23.37 October 1, 2003, Jes Sorensen
	- Make MMIO depend on CONFIG_X86_VISWS instead of yet another
	  random CONFIG option
	- Clean up locking in probe path
    Rev  3.23.36 October 1, 2003, Christoph Hellwig
	- queuecommand only ever receives new commands - clear flags
	- Reintegrate lost fixes from Linux 2.5
    Rev  3.23.35 August 14, 2003, Jes Sorensen
	- Build against 2.6
    Rev  3.23.34 July 23, 2003, Jes Sorensen
	- Remove pointless TRUE/FALSE macros
	- Clean up vchan handling
    Rev  3.23.33 July 3, 2003, Jes Sorensen
	- Don't define register access macros before define determining MMIO.
	  This just happend to work out on ia64 but not elsewhere.
	- Don't try and read from the card while it is in reset as
	  it won't respond and causes an MCA
    Rev  3.23.32 June 23, 2003, Jes Sorensen
	- Basic support for boot time arguments
    Rev  3.23.31 June 8, 2003, Jes Sorensen
	- Reduce boot time messages
    Rev  3.23.30 June 6, 2003, Jes Sorensen
	- Do not enable sync/wide/ppr before it has been determined
	  that the target device actually supports it
	- Enable DMA arbitration for multi channel controllers
    Rev  3.23.29 June 3, 2003, Jes Sorensen
	- Port to 2.5.69
    Rev  3.23.28 June 3, 2003, Jes Sorensen
	- Eliminate duplicate marker commands on bus resets
	- Handle outstanding commands appropriately on bus/device resets
    Rev  3.23.27 May 28, 2003, Jes Sorensen
	- Remove bogus input queue code, let the Linux SCSI layer do the work
	- Clean up NVRAM handling, only read it once from the card
	- Add a number of missing default nvram parameters
    Rev  3.23.26 Beta May 28, 2003, Jes Sorensen
	- Use completion queue for mailbox commands instead of busy wait
    Rev  3.23.25 Beta May 27, 2003, James Bottomley
	- Migrate to use new error handling code
    Rev  3.23.24 Beta May 21, 2003, James Bottomley
	- Big endian support
	- Cleanup data direction code
    Rev  3.23.23 Beta May 12, 2003, Jes Sorensen
	- Switch to using MMIO instead of PIO
    Rev  3.23.22 Beta April 15, 2003, Jes Sorensen
	- Fix PCI parity problem with 12160 during reset.
    Rev  3.23.21 Beta April 14, 2003, Jes Sorensen
	- Use pci_map_page()/pci_unmap_page() instead of map_single version.
    Rev  3.23.20 Beta April 9, 2003, Jes Sorensen
	- Remove < 2.4.x support
	- Introduce HOST_LOCK to make the spin lock changes portable.
	- Remove a bunch of idiotic and unnecessary typedef's
	- Kill all leftovers of target-mode support which never worked anyway
    Rev  3.23.19 Beta April 11, 2002, Linus Torvalds
	- Do qla1280_pci_config() before calling request_irq() and
	  request_region()
	- Use pci_dma_hi32() to handle upper word of DMA addresses instead
	  of large shifts
	- Hand correct arguments to free_irq() in case of failure
    Rev  3.23.18 Beta April 11, 2002, Jes Sorensen
	- Run source through Lindent and clean up the output
    Rev  3.23.17 Beta April 11, 2002, Jes Sorensen
	- Update SCSI firmware to qla1280 v8.15.00 and qla12160 v10.04.32
    Rev  3.23.16 Beta March 19, 2002, Jes Sorensen
	- Rely on mailbox commands generating interrupts - do not
	  run qla1280_isr() from ql1280_mailbox_command()
	- Remove device_reg_t
	- Integrate ql12160_set_target_parameters() with 1280 version
	- Make qla1280_setup() non static
	- Do not call qla1280_check_for_dead_scsi_bus() on every I/O request
	  sent to the card - this command pauses the firmare!!!
    Rev  3.23.15 Beta March 19, 2002, Jes Sorensen
	- Clean up qla1280.h - remove obsolete QL_DEBUG_LEVEL_x definitions
	- Remove a pile of pointless and confusing (srb_t **) and
	  (scsi_lu_t *) typecasts
	- Explicit mark that we do not use the new error handling (for now)
	- Remove scsi_qla_host_t and use 'struct' instead
	- Remove in_abort, watchdog_enabled, dpc, dpc_sched, bios_enabled,
	  pci_64bit_slot flags which weren't used for anything anyway
	- Grab host->host_lock while calling qla1280_isr() from abort()
	- Use spin_lock()/spin_unlock() in qla1280_intr_handler() - we
	  do not need to save/restore flags in the interrupt handler
	- Enable interrupts early (before any mailbox access) in preparation
	  for cleaning up the mailbox handling
    Rev  3.23.14 Beta March 14, 2002, Jes Sorensen
	- Further cleanups. Remove all trace of QL_DEBUG_LEVEL_x and replace
	  it with proper use of dprintk().
	- Make qla1280_print_scsi_cmd() and qla1280_dump_buffer() both take
	  a debug level argument to determine if data is to be printed
	- Add KERN_* info to printk()
    Rev  3.23.13 Beta March 14, 2002, Jes Sorensen
	- Significant cosmetic cleanups
	- Change debug code to use dprintk() and remove #if mess
    Rev  3.23.12 Beta March 13, 2002, Jes Sorensen
	- More cosmetic cleanups, fix places treating return as function
	- use cpu_relax() in qla1280_debounce_register()
    Rev  3.23.11 Beta March 13, 2002, Jes Sorensen
	- Make it compile under 2.5.5
    Rev  3.23.10 Beta October 1, 2001, Jes Sorensen
	- Do no typecast short * to long * in QL1280BoardTbl, this
	  broke miserably on big endian boxes
    Rev  3.23.9 Beta September 30, 2001, Jes Sorensen
	- Remove pre 2.2 hack for checking for reentrance in interrupt handler
	- Make data types used to receive from SCSI_{BUS,TCN,LUN}_32
	  unsigned int to match the types from struct scsi_cmnd
    Rev  3.23.8 Beta September 29, 2001, Jes Sorensen
	- Remove bogus timer_t typedef from qla1280.h
	- Remove obsolete pre 2.2 PCI setup code, use proper #define's
	  for PCI_ values, call pci_set_master()
	- Fix memleak of qla1280_buffer on module unload
	- Only compile module parsing code #ifdef MODULE - should be
	  changed to use individual MODULE_PARM's later
	- Remove dummy_buffer that was never modified nor printed
	- ENTER()/LEAVE() are noops unless QL_DEBUG_LEVEL_3, hence remove
	  #ifdef QL_DEBUG_LEVEL_3/#endif around ENTER()/LEAVE() calls
	- Remove \r from print statements, this is Linux, not DOS
	- Remove obsolete QLA1280_{SCSILU,INTR,RING}_{LOCK,UNLOCK}
	  dummy macros
	- Remove C++ compile hack in header file as Linux driver are not
	  supposed to be compiled as C++
	- Kill MS_64BITS macro as it makes the code more readable
	- Remove unnecessary flags.in_interrupts bit
    Rev  3.23.7 Beta August 20, 2001, Jes Sorensen
	- Dont' check for set flags on q->q_flag one by one in qla1280_next()
        - Check whether the interrupt was generated by the QLA1280 before
          doing any processing
	- qla1280_status_entry(): Only zero out part of sense_buffer that
	  is not being copied into
	- Remove more superflouous typecasts
	- qla1280_32bit_start_scsi() replace home-brew memcpy() with memcpy()
    Rev  3.23.6 Beta August 20, 2001, Tony Luck, Intel
        - Don't walk the entire list in qla1280_putq_t() just to directly
	  grab the pointer to the last element afterwards
    Rev  3.23.5 Beta August 9, 2001, Jes Sorensen
	- Don't use IRQF_DISABLED, it's use is deprecated for this kinda driver
    Rev  3.23.4 Beta August 8, 2001, Jes Sorensen
	- Set dev->max_sectors to 1024
    Rev  3.23.3 Beta August 6, 2001, Jes Sorensen
	- Provide compat macros for pci_enable_device(), pci_find_subsys()
	  and scsi_set_pci_device()
	- Call scsi_set_pci_device() for all devices
	- Reduce size of kernel version dependent device probe code
	- Move duplicate probe/init code to separate function
	- Handle error if qla1280_mem_alloc() fails
	- Kill OFFSET() macro and use Linux's PCI definitions instead
        - Kill private structure defining PCI config space (struct config_reg)
	- Only allocate I/O port region if not in MMIO mode
	- Remove duplicate (unused) sanity check of sife of srb_t
    Rev  3.23.2 Beta August 6, 2001, Jes Sorensen
	- Change home-brew memset() implementations to use memset()
        - Remove all references to COMTRACE() - accessing a PC's COM2 serial
          port directly is not legal under Linux.
    Rev  3.23.1 Beta April 24, 2001, Jes Sorensen
        - Remove pre 2.2 kernel support
        - clean up 64 bit DMA setting to use 2.4 API (provide backwards compat)
        - Fix MMIO access to use readl/writel instead of directly
          dereferencing pointers
        - Nuke MSDOS debugging code
        - Change true/false data types to int from uint8_t
        - Use int for counters instead of uint8_t etc.
        - Clean up size & byte order conversion macro usage
    Rev  3.23 Beta January 11, 2001 BN Qlogic
        - Added check of device_id when handling non
          QLA12160s during detect().
    Rev  3.22 Beta January 5, 2001 BN Qlogic
        - Changed queue_task() to schedule_task()
          for kernels 2.4.0 and higher.
          Note: 2.4.0-testxx kernels released prior to
                the actual 2.4.0 kernel release on January 2001
                will get compile/link errors with schedule_task().
                Please update your kernel to released 2.4.0 level,
                or comment lines in this file flagged with  3.22
                to resolve compile/link error of schedule_task().
        - Added -DCONFIG_SMP in addition to -D__SMP__
          in Makefile for 2.4.0 builds of driver as module.
    Rev  3.21 Beta January 4, 2001 BN Qlogic
        - Changed criteria of 64/32 Bit mode of HBA
          operation according to BITS_PER_LONG rather
          than HBA's NVRAM setting of >4Gig memory bit;
          so that the HBA auto-configures without the need
          to setup each system individually.
    Rev  3.20 Beta December 5, 2000 BN Qlogic
        - Added priority handling to IA-64  onboard SCSI
          ISP12160 chip for kernels greater than 2.3.18.
        - Added irqrestore for qla1280_intr_handler.
        - Enabled /proc/scsi/qla1280 interface.
        - Clear /proc/scsi/qla1280 counters in detect().
    Rev  3.19 Beta October 13, 2000 BN Qlogic
        - Declare driver_template for new kernel
          (2.4.0 and greater) scsi initialization scheme.
        - Update /proc/scsi entry for 2.3.18 kernels and
          above as qla1280
    Rev  3.18 Beta October 10, 2000 BN Qlogic
        - Changed scan order of adapters to map
          the QLA12160 followed by the QLA1280.
    Rev  3.17 Beta September 18, 2000 BN Qlogic
        - Removed warnings for 32 bit 2.4.x compiles
        - Corrected declared size for request and response
          DMA addresses that are kept in each ha
    Rev. 3.16 Beta  August 25, 2000   BN  Qlogic
        - Corrected 64 bit addressing issue on IA-64
          where the upper 32 bits were not properly
          passed to the RISC engine.
    Rev. 3.15 Beta  August 22, 2000   BN  Qlogic
        - Modified qla1280_setup_chip to properly load
          ISP firmware for greater that 4 Gig memory on IA-64
    Rev. 3.14 Beta  August 16, 2000   BN  Qlogic
        - Added setting of dma_mask to full 64 bit
          if flags.enable_64bit_addressing is set in NVRAM
    Rev. 3.13 Beta  August 16, 2000   BN  Qlogic
        - Use new PCI DMA mapping APIs for 2.4.x kernel
    Rev. 3.12       July 18, 2000    Redhat & BN Qlogic
        - Added check of pci_enable_device to detect() for 2.3.x
        - Use pci_resource_start() instead of
          pdev->resource[0].start in detect() for 2.3.x
        - Updated driver version
    Rev. 3.11       July 14, 2000    BN  Qlogic
	- Updated SCSI Firmware to following versions:
	  qla1x80:   8.13.08
	  qla1x160:  10.04.08
	- Updated driver version to 3.11
    Rev. 3.10    June 23, 2000   BN Qlogic
        - Added filtering of AMI SubSys Vendor ID devices
    Rev. 3.9
        - DEBUG_QLA1280 undefined and  new version  BN Qlogic
    Rev. 3.08b      May 9, 2000    MD Dell
        - Added logic to check against AMI subsystem vendor ID
	Rev. 3.08       May 4, 2000    DG  Qlogic
        - Added logic to check for PCI subsystem ID.
	Rev. 3.07       Apr 24, 2000    DG & BN  Qlogic
	   - Updated SCSI Firmware to following versions:
	     qla12160:   10.01.19
		 qla1280:     8.09.00
	Rev. 3.06       Apr 12, 2000    DG & BN  Qlogic
	   - Internal revision; not released
    Rev. 3.05       Mar 28, 2000    DG & BN  Qlogic
       - Edit correction for virt_to_bus and PROC.
    Rev. 3.04       Mar 28, 2000    DG & BN  Qlogic
       - Merge changes from ia64 port.
    Rev. 3.03       Mar 28, 2000    BN  Qlogic
       - Increase version to reflect new code drop with compile fix
         of issue with inclusion of linux/spinlock for 2.3 kernels
    Rev. 3.02       Mar 15, 2000    BN  Qlogic
       - Merge qla1280_proc_info from 2.10 code base
    Rev. 3.01       Feb 10, 2000    BN  Qlogic
       - Corrected code to compile on a 2.2.x kernel.
    Rev. 3.00       Jan 17, 2000    DG  Qlogic
	   - Added 64-bit support.
    Rev. 2.07       Nov 9, 1999     DG  Qlogic
	   - Added new routine to set target parameters for ISP12160.
    Rev. 2.06       Sept 10, 1999     DG  Qlogic
       - Added support for ISP12160 Ultra 3 chip.
    Rev. 2.03       August 3, 1999    Fred Lewis, Intel DuPont
	- Modified code to remove errors generated when compiling with
	  Cygnus IA64 Compiler.
        - Changed conversion of pointers to unsigned longs instead of integers.
        - Changed type of I/O port variables from uint32_t to unsigned long.
        - Modified OFFSET macro to work with 64-bit as well as 32-bit.
        - Changed sprintf and printk format specifiers for pointers to %p.
        - Changed some int to long type casts where needed in sprintf & printk.
        - Added l modifiers to sprintf and printk format specifiers for longs.
        - Removed unused local variables.
    Rev. 1.20       June 8, 1999      DG,  Qlogic
         Changes to support RedHat release 6.0 (kernel 2.2.5).
       - Added SCSI exclusive access lock (io_request_lock) when accessing
         the adapter.
       - Added changes for the new LINUX interface template. Some new error
         handling routines have been added to the template, but for now we
         will use the old ones.
    -   Initial Beta Release.
*****************************************************************************/


#include <linux/module.h>

#include <linux/version.h>
#include <linux/types.h>
#include <linux/string.h>
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/ioport.h>
#include <linux/delay.h>
#include <linux/timer.h>
#include <linux/pci.h>
#include <linux/proc_fs.h>
#include <linux/stat.h>
#include <linux/slab.h>
#include <linux/pci_ids.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/dma-mapping.h>

#include <asm/io.h>
#include <asm/irq.h>
#include <asm/byteorder.h>
#include <asm/processor.h>
#include <asm/types.h>
#include <asm/system.h>

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

#if defined(CONFIG_IA64_GENERIC) || defined(CONFIG_IA64_SGI_SN2)
#include <asm/sn/io.h>
#endif

#if LINUX_VERSION_CODE < 0x020600
#error "Kernels older than 2.6.0 are no longer supported"
#endif


/*
 * Compile time Options:
 *            0 - Disable and 1 - Enable
 */
#define  DEBUG_QLA1280_INTR	0
#define  DEBUG_PRINT_NVRAM	0
#define  DEBUG_QLA1280		0

/*
 * The SGI VISWS is broken and doesn't support MMIO ;-(
 */
#ifdef CONFIG_X86_VISWS
#define	MEMORY_MAPPED_IO	0
#else
#define	MEMORY_MAPPED_IO	1
#endif

#define UNIQUE_FW_NAME
#include "qla1280.h"
#include "ql12160_fw.h"		/* ISP RISC codes */
#include "ql1280_fw.h"
#include "ql1040_fw.h"

#ifndef BITS_PER_LONG
#error "BITS_PER_LONG not defined!"
#endif
#if (BITS_PER_LONG == 64) || defined CONFIG_HIGHMEM
#define QLA_64BIT_PTR	1
#endif

#ifdef QLA_64BIT_PTR
#define pci_dma_hi32(a)			((a >> 16) >> 16)
#else
#define pci_dma_hi32(a)			0
#endif
#define pci_dma_lo32(a)			(a & 0xffffffff)

#define NVRAM_DELAY()			udelay(500)	/* 2 microseconds */

#if defined(__ia64__) && !defined(ia64_platform_is)
#define ia64_platform_is(foo)		(!strcmp(x, platform_name))
#endif


#define IS_ISP1040(ha) (ha->pdev->device == PCI_DEVICE_ID_QLOGIC_ISP1020)
#define IS_ISP1x40(ha) (ha->pdev->device == PCI_DEVICE_ID_QLOGIC_ISP1020 || \
			ha->pdev->device == PCI_DEVICE_ID_QLOGIC_ISP1240)
#define IS_ISP1x160(ha)        (ha->pdev->device == PCI_DEVICE_ID_QLOGIC_ISP10160 || \
				ha->pdev->device == PCI_DEVICE_ID_QLOGIC_ISP12160)


static int qla1280_probe_one(struct pci_dev *, const struct pci_device_id *);
static void qla1280_remove_one(struct pci_dev *);

/*
 *  QLogic Driver Support Function Prototypes.
 */
static void qla1280_done(struct scsi_qla_host *);
static int qla1280_get_token(char *);
static int qla1280_setup(char *s) __init;

/*
 *  QLogic ISP1280 Hardware Support Function Prototypes.
 */
static int qla1280_load_firmware(struct scsi_qla_host *);
static int qla1280_init_rings(struct scsi_qla_host *);
static int qla1280_nvram_config(struct scsi_qla_host *);
static int qla1280_mailbox_command(struct scsi_qla_host *,
				   uint8_t, uint16_t *);
static int qla1280_bus_reset(struct scsi_qla_host *, int);
static int qla1280_device_reset(struct scsi_qla_host *, int, int);
static int qla1280_abort_device(struct scsi_qla_host *, int, int, int);
static int qla1280_abort_command(struct scsi_qla_host *, struct srb *, int);
static int qla1280_abort_isp(struct scsi_qla_host *);
#ifdef QLA_64BIT_PTR
static int qla1280_64bit_start_scsi(struct scsi_qla_host *, struct srb *);
#else
static int qla1280_32bit_start_scsi(struct scsi_qla_host *, struct srb *);
#endif
static void qla1280_nv_write(struct scsi_qla_host *, uint16_t);
static void qla1280_poll(struct scsi_qla_host *);
static void qla1280_reset_adapter(struct scsi_qla_host *);
static void qla1280_marker(struct scsi_qla_host *, int, int, int, u8);
static void qla1280_isp_cmd(struct scsi_qla_host *);
static void qla1280_isr(struct scsi_qla_host *, struct list_head *);
static void qla1280_rst_aen(struct scsi_qla_host *);
static void qla1280_status_entry(struct scsi_qla_host *, struct response *,
				 struct list_head *);
static void qla1280_error_entry(struct scsi_qla_host *, struct response *,
				struct list_head *);
static uint16_t qla1280_get_nvram_word(struct scsi_qla_host *, uint32_t);
static uint16_t qla1280_nvram_request(struct scsi_qla_host *, uint32_t);
static uint16_t qla1280_debounce_register(volatile uint16_t __iomem *);
static request_t *qla1280_req_pkt(struct scsi_qla_host *);
static int qla1280_check_for_dead_scsi_bus(struct scsi_qla_host *,
					   unsigned int);
static void qla1280_get_target_parameters(struct scsi_qla_host *,
					   struct scsi_device *);
static int qla1280_set_target_parameters(struct scsi_qla_host *, int, int);


static struct qla_driver_setup driver_setup;

/*
 * convert scsi data direction to request_t control flags
 */
static inline uint16_t
qla1280_data_direction(struct scsi_cmnd *cmnd)
{
	switch(cmnd->sc_data_direction) {
	case DMA_FROM_DEVICE:
		return BIT_5;
	case DMA_TO_DEVICE:
		return BIT_6;
	case DMA_BIDIRECTIONAL:
		return BIT_5 | BIT_6;
	/*
	 * We could BUG() on default here if one of the four cases aren't
	 * met, but then again if we receive something like that from the
	 * SCSI layer we have more serious problems. This shuts up GCC.
	 */
	case DMA_NONE:
	default:
		return 0;
	}
}
		
#if DEBUG_QLA1280
static void __qla1280_print_scsi_cmd(struct scsi_cmnd * cmd);
static void __qla1280_dump_buffer(char *, int);
#endif


/*
 * insmod needs to find the variable and make it point to something
 */
#ifdef MODULE
static char *qla1280;

/* insmod qla1280 options=verbose" */
module_param(qla1280, charp, 0);
#else
__setup("qla1280=", qla1280_setup);
#endif


/*
 * We use the scsi_pointer structure that's included with each scsi_command
 * to overlay our struct srb over it. qla1280_init() checks that a srb is not
 * bigger than a scsi_pointer.
 */

#define	CMD_SP(Cmnd)		&Cmnd->SCp
#define	CMD_CDBLEN(Cmnd)	Cmnd->cmd_len
#define	CMD_CDBP(Cmnd)		Cmnd->cmnd
#define	CMD_SNSP(Cmnd)		Cmnd->sense_buffer
#define	CMD_SNSLEN(Cmnd)	sizeof(Cmnd->sense_buffer)
#define	CMD_RESULT(Cmnd)	Cmnd->result
#define	CMD_HANDLE(Cmnd)	Cmnd->host_scribble
#define CMD_REQUEST(Cmnd)	Cmnd->request->cmd

#define CMD_HOST(Cmnd)		Cmnd->device->host
#define SCSI_BUS_32(Cmnd)	Cmnd->device->channel
#define SCSI_TCN_32(Cmnd)	Cmnd->device->id
#define SCSI_LUN_32(Cmnd)	Cmnd->device->lun


/*****************************************/
/*   ISP Boards supported by this driver */
/*****************************************/

struct qla_boards {
	unsigned char name[9];	/* Board ID String */
	int numPorts;		/* Number of SCSI ports */
	unsigned short *fwcode;	/* pointer to FW array         */
	unsigned short *fwlen;	/* number of words in array    */
	unsigned short *fwstart;	/* start address for F/W       */
	unsigned char *fwver;	/* Ptr to F/W version array    */
};

/* NOTE: the last argument in each entry is used to index ql1280_board_tbl */
static struct pci_device_id qla1280_pci_tbl[] = {
	{PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP12160,
		PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
	{PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP1020,
		PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1},
	{PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP1080,
		PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2},
	{PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP1240,
		PCI_ANY_ID, PCI_ANY_ID, 0, 0, 3},
	{PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP1280,
		PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4},
	{PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP10160,
		PCI_ANY_ID, PCI_ANY_ID, 0, 0, 5},
	{0,}
};
MODULE_DEVICE_TABLE(pci, qla1280_pci_tbl);

static struct qla_boards ql1280_board_tbl[] = {
	/* Name ,  Number of ports, FW details */
	{"QLA12160", 2, &fw12160i_code01[0], &fw12160i_length01,
	 &fw12160i_addr01, &fw12160i_version_str[0]},
	{"QLA1040", 1, &risc_code01[0], &risc_code_length01,
	 &risc_code_addr01, &firmware_version[0]},
	{"QLA1080", 1, &fw1280ei_code01[0], &fw1280ei_length01,
	 &fw1280ei_addr01, &fw1280ei_version_str[0]},
	{"QLA1240", 2, &fw1280ei_code01[0], &fw1280ei_length01,
	 &fw1280ei_addr01, &fw1280ei_version_str[0]},
	{"QLA1280", 2, &fw1280ei_code01[0], &fw1280ei_length01,
	 &fw1280ei_addr01, &fw1280ei_version_str[0]},
	{"QLA10160", 1, &fw12160i_code01[0], &fw12160i_length01,
	 &fw12160i_addr01, &fw12160i_version_str[0]},
	{"        ", 0}
};

static int qla1280_verbose = 1;

#if DEBUG_QLA1280
static int ql_debug_level = 1;
#define dprintk(level, format, a...)	\
	do { if (ql_debug_level >= level) printk(KERN_ERR format, ##a); } while(0)
#define qla1280_dump_buffer(level, buf, size)	\
	if (ql_debug_level >= level) __qla1280_dump_buffer(buf, size)
#define qla1280_print_scsi_cmd(level, cmd)	\
	if (ql_debug_level >= level) __qla1280_print_scsi_cmd(cmd)
#else
#define ql_debug_level			0
#define dprintk(level, format, a...)	do{}while(0)
#define qla1280_dump_buffer(a, b, c)	do{}while(0)
#define qla1280_print_scsi_cmd(a, b)	do{}while(0)
#endif

#define ENTER(x)		dprintk(3, "qla1280 : Entering %s()\n", x);
#define LEAVE(x)		dprintk(3, "qla1280 : Leaving %s()\n", x);
#define ENTER_INTR(x)		dprintk(4, "qla1280 : Entering %s()\n", x);
#define LEAVE_INTR(x)		dprintk(4, "qla1280 : Leaving %s()\n", x);


static int qla1280_read_nvram(struct scsi_qla_host *ha)
{
	uint16_t *wptr;
	uint8_t chksum;
	int cnt, i;
	struct nvram *nv;

	ENTER("qla1280_read_nvram");

	if (driver_setup.no_nvram)
		return 1;

	printk(KERN_INFO "scsi(%ld): Reading NVRAM\n", ha->host_no);

	wptr = (uint16_t *)&ha->nvram;
	nv = &ha->nvram;
	chksum = 0;
	for (cnt = 0; cnt < 3; cnt++) {
		*wptr = qla1280_get_nvram_word(ha, cnt);
		chksum += *wptr & 0xff;
		chksum += (*wptr >> 8) & 0xff;
		wptr++;
	}

	if (nv->id0 != 'I' || nv->id1 != 'S' ||
	    nv->id2 != 'P' || nv->id3 != ' ' || nv->version < 1) {
		dprintk(2, "Invalid nvram ID or version!\n");
		chksum = 1;
	} else {
		for (; cnt < sizeof(struct nvram); cnt++) {
			*wptr = qla1280_get_nvram_word(ha, cnt);
			chksum += *wptr & 0xff;
			chksum += (*wptr >> 8) & 0xff;
			wptr++;
		}
	}

	dprintk(3, "qla1280_read_nvram: NVRAM Magic ID= %c %c %c %02x"
	       " version %i\n", nv->id0, nv->id1, nv->id2, nv->id3,
	       nv->version);


	if (chksum) {
		if (!driver_setup.no_nvram)
			printk(KERN_WARNING "scsi(%ld): Unable to identify or "
			       "validate NVRAM checksum, using default "
			       "settings\n", ha->host_no);
		ha->nvram_valid = 0;
	} else
		ha->nvram_valid = 1;

	/* The firmware interface is, um, interesting, in that the
	 * actual firmware image on the chip is little endian, thus,
	 * the process of taking that image to the CPU would end up
	 * little endian.  However, the firmare interface requires it
	 * to be read a word (two bytes) at a time.
	 *
	 * The net result of this would be that the word (and
	 * doubleword) quantites in the firmware would be correct, but
	 * the bytes would be pairwise reversed.  Since most of the
	 * firmware quantites are, in fact, bytes, we do an extra
	 * le16_to_cpu() in the firmware read routine.
	 *
	 * The upshot of all this is that the bytes in the firmware
	 * are in the correct places, but the 16 and 32 bit quantites
	 * are still in little endian format.  We fix that up below by
	 * doing extra reverses on them */
	nv->isp_parameter = cpu_to_le16(nv->isp_parameter);
	nv->firmware_feature.w = cpu_to_le16(nv->firmware_feature.w);
	for(i = 0; i < MAX_BUSES; i++) {
		nv->bus[i].selection_timeout = cpu_to_le16(nv->bus[i].selection_timeout);
		nv->bus[i].max_queue_depth = cpu_to_le16(nv->bus[i].max_queue_depth);
	}
	dprintk(1, "qla1280_read_nvram: Completed Reading NVRAM\n");
	LEAVE("qla1280_read_nvram");

	return chksum;
}

/**************************************************************************
 *   qla1280_info
 *     Return a string describing the driver.
 **************************************************************************/
static const char *
qla1280_info(struct Scsi_Host *host)
{
	static char qla1280_scsi_name_buffer[125];
	char *bp;
	struct scsi_qla_host *ha;
	struct qla_boards *bdp;

	bp = &qla1280_scsi_name_buffer[0];
	ha = (struct scsi_qla_host *)host->hostdata;
	bdp = &ql1280_board_tbl[ha->devnum];
	memset(bp, 0, sizeof(qla1280_scsi_name_buffer));

	sprintf (bp,
		 "QLogic %s PCI to SCSI Host Adapter\n"
		 "       Firmware version: %2d.%02d.%02d, Driver version %s",
		 &bdp->name[0], bdp->fwver[0], bdp->fwver[1], bdp->fwver[2],
		 QLA1280_VERSION);
	return bp;
}

/**************************************************************************
 *   qla1200_queuecommand
 *     Queue a command to the controller.
 *
 * Note:
 * The mid-level driver tries to ensures that queuecommand never gets invoked
 * concurrently with itself or the interrupt handler (although the
 * interrupt handler may call this routine as part of request-completion
 * handling).   Unfortunely, it sometimes calls the scheduler in interrupt
 * context which is a big NO! NO!.
 **************************************************************************/
static int
qla1280_queuecommand(struct scsi_cmnd *cmd, void (*fn)(struct scsi_cmnd *))
{
	struct Scsi_Host *host = cmd->device->host;
	struct scsi_qla_host *ha = (struct scsi_qla_host *)host->hostdata;
	struct srb *sp = (struct srb *)&cmd->SCp;
	int status;

	cmd->scsi_done = fn;
	sp->cmd = cmd;
	sp->flags = 0;

	qla1280_print_scsi_cmd(5, cmd);

#ifdef QLA_64BIT_PTR
	/*
	 * Using 64 bit commands if the PCI bridge doesn't support it is a
	 * bit wasteful, however this should really only happen if one's
	 * PCI controller is completely broken, like the BCM1250. For
	 * sane hardware this is not an issue.
	 */
	status = qla1280_64bit_start_scsi(ha, sp);
#else
	status = qla1280_32bit_start_scsi(ha, sp);
#endif
	return status;
}

enum action {
	ABORT_COMMAND,
	ABORT_DEVICE,
	DEVICE_RESET,
	BUS_RESET,
	ADAPTER_RESET,
	FAIL
};

/* timer action for error action processor */
static void qla1280_error_wait_timeout(unsigned long __data)
{
	struct scsi_cmnd *cmd = (struct scsi_cmnd *)__data;
	struct srb *sp = (struct srb *)CMD_SP(cmd);

	complete(sp->wait);
}

static void qla1280_mailbox_timeout(unsigned long __data)
{
	struct scsi_qla_host *ha = (struct scsi_qla_host *)__data;
	struct device_reg __iomem *reg;
	reg = ha->iobase;

	ha->mailbox_out[0] = RD_REG_WORD(&reg->mailbox0);
	printk(KERN_ERR "scsi(%ld): mailbox timed out, mailbox0 %04x, "
	       "ictrl %04x, istatus %04x\n", ha->host_no, ha->mailbox_out[0],
	       RD_REG_WORD(&reg->ictrl), RD_REG_WORD(&reg->istatus));
	complete(ha->mailbox_wait);
}

/**************************************************************************
 * qla1200_error_action
 *    The function will attempt to perform a specified error action and
 *    wait for the results (or time out).
 *
 * Input:
 *      cmd = Linux SCSI command packet of the command that cause the
 *            bus reset.
 *      action = error action to take (see action_t)
 *
 * Returns:
 *      SUCCESS or FAILED
 *
 * Note:
 *      Resetting the bus always succeeds - is has to, otherwise the
 *      kernel will panic! Try a surgical technique - sending a BUS
 *      DEVICE RESET message - on the offending target before pulling
 *      the SCSI bus reset line.
 **************************************************************************/
static int
qla1280_error_action(struct scsi_cmnd *cmd, enum action action)
{
	struct scsi_qla_host *ha;
	int bus, target, lun;
	struct srb *sp;
	uint16_t data;
	unsigned char *handle;
	int result, i;
	DECLARE_COMPLETION_ONSTACK(wait);
	struct timer_list timer;

	ha = (struct scsi_qla_host *)(CMD_HOST(cmd)->hostdata);

	dprintk(4, "error_action %i, istatus 0x%04x\n", action,
		RD_REG_WORD(&ha->iobase->istatus));

	dprintk(4, "host_cmd 0x%04x, ictrl 0x%04x, jiffies %li\n",
		RD_REG_WORD(&ha->iobase->host_cmd),
		RD_REG_WORD(&ha->iobase->ictrl), jiffies);

	ENTER("qla1280_error_action");
	if (qla1280_verbose)
		printk(KERN_INFO "scsi(%li): Resetting Cmnd=0x%p, "
		       "Handle=0x%p, action=0x%x\n",
		       ha->host_no, cmd, CMD_HANDLE(cmd), action);

	if (cmd == NULL) {
		printk(KERN_WARNING "(scsi?:?:?:?) Reset called with NULL "
		       "si_Cmnd pointer, failing.\n");
		LEAVE("qla1280_error_action");
		return FAILED;
	}

	ha = (struct scsi_qla_host *)cmd->device->host->hostdata;
	sp = (struct srb *)CMD_SP(cmd);
	handle = CMD_HANDLE(cmd);

	/* Check for pending interrupts. */
	data = qla1280_debounce_register(&ha->iobase->istatus);
	/*
	 * The io_request_lock is held when the reset handler is called, hence
	 * the interrupt handler cannot be running in parallel as it also
	 * grabs the lock. /Jes
	 */
	if (data & RISC_INT)
		qla1280_isr(ha, &ha->done_q);

	/*
	 * Determine the suggested action that the mid-level driver wants
	 * us to perform.
	 */
	if (handle == (unsigned char *)INVALID_HANDLE || handle == NULL) {
		if(action == ABORT_COMMAND) {
			/* we never got this command */
			printk(KERN_INFO "qla1280: Aborting a NULL handle\n");
			return SUCCESS;	/* no action - we don't have command */
		}
	} else {
		sp->wait = &wait;
	}

	bus = SCSI_BUS_32(cmd);
	target = SCSI_TCN_32(cmd);
	lun = SCSI_LUN_32(cmd);

	/* Overloading result.  Here it means the success or fail of the
	 * *issue* of the action.  When we return from the routine, it must
	 * mean the actual success or fail of the action */
	result = FAILED;
	switch (action) {
	case FAIL:
		break;

	case ABORT_COMMAND:
		if ((sp->flags & SRB_ABORT_PENDING)) {
			printk(KERN_WARNING
			       "scsi(): Command has a pending abort "
			       "message - ABORT_PENDING.\n");
			/* This should technically be impossible since we
			 * now wait for abort completion */
			break;
		}

		for (i = 0; i < MAX_OUTSTANDING_COMMANDS; i++) {
			if (sp == ha->outstanding_cmds[i]) {
				dprintk(1, "qla1280: RISC aborting command\n");
				if (qla1280_abort_command(ha, sp, i) == 0)
					result = SUCCESS;
				else {
					/*
					 * Since we don't know what might
					 * have happend to the command, it
					 * is unsafe to remove it from the
					 * device's queue at this point.
					 * Wait and let the escalation
					 * process take care of it.
					 */
					printk(KERN_WARNING
					       "scsi(%li:%i:%i:%i): Unable"
					       " to abort command!\n",
					       ha->host_no, bus, target, lun);
				}
			}
		}
		break;

	case ABORT_DEVICE:
		if (qla1280_verbose)
			printk(KERN_INFO
			       "scsi(%ld:%d:%d:%d): Queueing abort device "
			       "command.\n", ha->host_no, bus, target, lun);
		if (qla1280_abort_device(ha, bus, target, lun) == 0)
			result = SUCCESS;
		break;

	case DEVICE_RESET:
		if (qla1280_verbose)
			printk(KERN_INFO
			       "scsi(%ld:%d:%d:%d): Queueing device reset "
			       "command.\n", ha->host_no, bus, target, lun);
		if (qla1280_device_reset(ha, bus, target) == 0)
			result = SUCCESS;
		break;

	case BUS_RESET:
		if (qla1280_verbose)
			printk(KERN_INFO "qla1280(%ld:%d): Issued bus "
			       "reset.\n", ha->host_no, bus);
		if (qla1280_bus_reset(ha, bus) == 0)
			result = SUCCESS;
		break;

	case ADAPTER_RESET:
	default:
		if (qla1280_verbose) {
			printk(KERN_INFO
			       "scsi(%ld): Issued ADAPTER RESET\n",
			       ha->host_no);
			printk(KERN_INFO "scsi(%ld): I/O processing will "
			       "continue automatically\n", ha->host_no);
		}
		ha->flags.reset_active = 1;
		/*
		 * We restarted all of the commands automatically, so the
		 * mid-level code can expect completions momentitarily.
		 */
		if (qla1280_abort_isp(ha) == 0)
			result = SUCCESS;

		ha->flags.reset_active = 0;
	}

	if (!list_empty(&ha->done_q))
		qla1280_done(ha);

	/* If we didn't manage to issue the action, or we have no
	 * command to wait for, exit here */
	if (result == FAILED || handle == NULL ||
	    handle == (unsigned char *)INVALID_HANDLE) {
		/*
		 * Clear completion queue to avoid qla1280_done() trying
		 * to complete the command at a later stage after we
		 * have exited the current context
		 */
		sp->wait = NULL;
		goto leave;
	}

	/* set up a timer just in case we're really jammed */
	init_timer(&timer);
	timer.expires = jiffies + 4*HZ;
	timer.data = (unsigned long)cmd;
	timer.function = qla1280_error_wait_timeout;
	add_timer(&timer);

	/* wait for the action to complete (or the timer to expire) */
	spin_unlock_irq(ha->host->host_lock);
	wait_for_completion(&wait);
	del_timer_sync(&timer);
	spin_lock_irq(ha->host->host_lock);
	sp->wait = NULL;

	/* the only action we might get a fail for is abort */
	if (action == ABORT_COMMAND) {
		if(sp->flags & SRB_ABORTED)
			result = SUCCESS;
		else
			result = FAILED;
	}

 leave:
	dprintk(1, "RESET returning %d\n", result);

	LEAVE("qla1280_error_action");
	return result;
}

/**************************************************************************
 *   qla1280_abort
 *     Abort the specified SCSI command(s).
 **************************************************************************/
static int
qla1280_eh_abort(struct scsi_cmnd * cmd)
{
	int rc;

	spin_lock_irq(cmd->device->host->host_lock);
	rc = qla1280_error_action(cmd, ABORT_COMMAND);
	spin_unlock_irq(cmd->device->host->host_lock);

	return rc;
}

/**************************************************************************
 *   qla1280_device_reset
 *     Reset the specified SCSI device
 **************************************************************************/
static int
qla1280_eh_device_reset(struct scsi_cmnd *cmd)
{
	int rc;

	spin_lock_irq(cmd->device->host->host_lock);
	rc = qla1280_error_action(cmd, DEVICE_RESET);
	spin_unlock_irq(cmd->device->host->host_lock);

	return rc;
}

/**************************************************************************
 *   qla1280_bus_reset
 *     Reset the specified bus.
 **************************************************************************/
static int
qla1280_eh_bus_reset(struct scsi_cmnd *cmd)
{
	int rc;

	spin_lock_irq(cmd->device->host->host_lock);
	rc = qla1280_error_action(cmd, BUS_RESET);
	spin_unlock_irq(cmd->device->host->host_lock);

	return rc;
}

/**************************************************************************
 *   qla1280_adapter_reset
 *     Reset the specified adapter (both channels)
 **************************************************************************/
static int
qla1280_eh_adapter_reset(struct scsi_cmnd *cmd)
{
	int rc;

	spin_lock_irq(cmd->device->host->host_lock);
	rc = qla1280_error_action(cmd, ADAPTER_RESET);
	spin_unlock_irq(cmd->device->host->host_lock);

	return rc;
}

static int
qla1280_biosparam(struct scsi_device *sdev, struct block_device *bdev,
		  sector_t capacity, int geom[])
{
	int heads, sectors, cylinders;

	heads = 64;
	sectors = 32;
	cylinders = (unsigned long)capacity / (heads * sectors);
	if (cylinders > 1024) {
		heads = 255;
		sectors = 63;
		cylinders = (unsigned long)capacity / (heads * sectors);
		/* if (cylinders > 1023)
		   cylinders = 1023; */
	}

	geom[0] = heads;
	geom[1] = sectors;
	geom[2] = cylinders;

	return 0;
}

 
/* disable risc and host interrupts */
static inline void
qla1280_disable_intrs(struct scsi_qla_host *ha)
{
	WRT_REG_WORD(&ha->iobase->ictrl, 0);
	RD_REG_WORD(&ha->iobase->ictrl);	/* PCI Posted Write flush */
}

/* enable risc and host interrupts */
static inline void
qla1280_enable_intrs(struct scsi_qla_host *ha)
{
	WRT_REG_WORD(&ha->iobase->ictrl, (ISP_EN_INT | ISP_EN_RISC));
	RD_REG_WORD(&ha->iobase->ictrl);	/* PCI Posted Write flush */
}

/**************************************************************************
 * qla1280_intr_handler
 *   Handles the H/W interrupt
 **************************************************************************/
static irqreturn_t
qla1280_intr_handler(int irq, void *dev_id)
{
	struct scsi_qla_host *ha;
	struct device_reg __iomem *reg;
	u16 data;
	int handled = 0;

	ENTER_INTR ("qla1280_intr_handler");
	ha = (struct scsi_qla_host *)dev_id;

	spin_lock(ha->host->host_lock);

	ha->isr_count++;
	reg = ha->iobase;

	qla1280_disable_intrs(ha);

	data = qla1280_debounce_register(&reg->istatus);
	/* Check for pending interrupts. */
	if (data & RISC_INT) {	
		qla1280_isr(ha, &ha->done_q);
		handled = 1;
	}
	if (!list_empty(&ha->done_q))
		qla1280_done(ha);

	spin_unlock(ha->host->host_lock);

	qla1280_enable_intrs(ha);

	LEAVE_INTR("qla1280_intr_handler");
	return IRQ_RETVAL(handled);
}


static int
qla1280_set_target_parameters(struct scsi_qla_host *ha, int bus, int target)
{
	uint8_t mr;
	uint16_t mb[MAILBOX_REGISTER_COUNT];
	struct nvram *nv;
	int status, lun;

	nv = &ha->nvram;

	mr = BIT_3 | BIT_2 | BIT_1 | BIT_0;

	/* Set Target Parameters. */
	mb[0] = MBC_SET_TARGET_PARAMETERS;
	mb[1] = (uint16_t)((bus ? target | BIT_7 : target) << 8);
	mb[2] = nv->bus[bus].target[target].parameter.renegotiate_on_error << 8;
	mb[2] |= nv->bus[bus].target[target].parameter.stop_queue_on_check << 9;
	mb[2] |= nv->bus[bus].target[target].parameter.auto_request_sense << 10;
	mb[2] |= nv->bus[bus].target[target].parameter.tag_queuing << 11;
	mb[2] |= nv->bus[bus].target[target].parameter.enable_sync << 12;
	mb[2] |= nv->bus[bus].target[target].parameter.enable_wide << 13;
	mb[2] |= nv->bus[bus].target[target].parameter.parity_checking << 14;
	mb[2] |= nv->bus[bus].target[target].parameter.disconnect_allowed << 15;

	if (IS_ISP1x160(ha)) {
		mb[2] |= nv->bus[bus].target[target].ppr_1x160.flags.enable_ppr << 5;
		mb[3] =	(nv->bus[bus].target[target].flags.flags1x160.sync_offset << 8);
		mb[6] =	(nv->bus[bus].target[target].ppr_1x160.flags.ppr_options << 8) |
			 nv->bus[bus].target[target].ppr_1x160.flags.ppr_bus_width;
		mr |= BIT_6;
	} else {
		mb[3] =	(nv->bus[bus].target[target].flags.flags1x80.sync_offset << 8);
	}
	mb[3] |= nv->bus[bus].target[target].sync_period;

	status = qla1280_mailbox_command(ha, mr, mb);

	/* Set Device Queue Parameters. */
	for (lun = 0; lun < MAX_LUNS; lun++) {
		mb[0] = MBC_SET_DEVICE_QUEUE;
		mb[1] = (uint16_t)((bus ? target | BIT_7 : target) << 8);
		mb[1] |= lun;
		mb[2] = nv->bus[bus].max_queue_depth;
		mb[3] = nv->bus[bus].target[target].execution_throttle;
		status |= qla1280_mailbox_command(ha, 0x0f, mb);
	}

	if (status)
		printk(KERN_WARNING "scsi(%ld:%i:%i): "
		       "qla1280_set_target_parameters() failed\n",
		       ha->host_no, bus, target);
	return status;
}


/**************************************************************************
 *   qla1280_slave_configure
 *
 * Description:
 *   Determines the queue depth for a given device.  There are two ways
 *   a queue depth can be obtained for a tagged queueing device.  One
 *   way is the default queue depth which is determined by whether
 *   If it is defined, then it is used
 *   as the default queue depth.  Otherwise, we use either 4 or 8 as the
 *   default queue depth (dependent on the number of hardware SCBs).
 **************************************************************************/
static int
qla1280_slave_configure(struct scsi_device *device)
{
	struct scsi_qla_host *ha;
	int default_depth = 3;
	int bus = device->channel;
	int target = device->id;
	int status = 0;
	struct nvram *nv;
	unsigned long flags;

	ha = (struct scsi_qla_host *)device->host->hostdata;
	nv = &ha->nvram;

	if (qla1280_check_for_dead_scsi_bus(ha, bus))
		return 1;

	if (device->tagged_supported &&
	    (ha->bus_settings[bus].qtag_enables & (BIT_0 << target))) {
		scsi_adjust_queue_depth(device, MSG_ORDERED_TAG,
					ha->bus_settings[bus].hiwat);
	} else {
		scsi_adjust_queue_depth(device, 0, default_depth);
	}

	nv->bus[bus].target[target].parameter.enable_sync = device->sdtr;
	nv->bus[bus].target[target].parameter.enable_wide = device->wdtr;
	nv->bus[bus].target[target].ppr_1x160.flags.enable_ppr = device->ppr;

	if (driver_setup.no_sync ||
	    (driver_setup.sync_mask &&
	     (~driver_setup.sync_mask & (1 << target))))
		nv->bus[bus].target[target].parameter.enable_sync = 0;
	if (driver_setup.no_wide ||
	    (driver_setup.wide_mask &&
	     (~driver_setup.wide_mask & (1 << target))))
		nv->bus[bus].target[target].parameter.enable_wide = 0;
	if (IS_ISP1x160(ha)) {
		if (driver_setup.no_ppr ||
		    (driver_setup.ppr_mask &&
		     (~driver_setup.ppr_mask & (1 << target))))
			nv->bus[bus].target[target].ppr_1x160.flags.enable_ppr = 0;
	}

	spin_lock_irqsave(ha->host->host_lock, flags);
	if (nv->bus[bus].target[target].parameter.enable_sync)
		status = qla1280_set_target_parameters(ha, bus, target);
	qla1280_get_target_parameters(ha, device);
	spin_unlock_irqrestore(ha->host->host_lock, flags);
	return status;
}


/*
 * qla1280_done
 *      Process completed commands.
 *
 * Input:
 *      ha           = adapter block pointer.
 */
static void
qla1280_done(struct scsi_qla_host *ha)
{
	struct srb *sp;
	struct list_head *done_q;
	int bus, target, lun;
	struct scsi_cmnd *cmd;

	ENTER("qla1280_done");

	done_q = &ha->done_q;

	while (!list_empty(done_q)) {
		sp = list_entry(done_q->next, struct srb, list);

		list_del(&sp->list);
	
		cmd = sp->cmd;
		bus = SCSI_BUS_32(cmd);
		target = SCSI_TCN_32(cmd);
		lun = SCSI_LUN_32(cmd);

		switch ((CMD_RESULT(cmd) >> 16)) {
		case DID_RESET:
			/* Issue marker command. */
			qla1280_marker(ha, bus, target, 0, MK_SYNC_ID);
			break;
		case DID_ABORT:
			sp->flags &= ~SRB_ABORT_PENDING;
			sp->flags |= SRB_ABORTED;
			if (sp->flags & SRB_TIMEOUT)
				CMD_RESULT(sp->cmd) = DID_TIME_OUT << 16;
			break;
		default:
			break;
		}

		/* Release memory used for this I/O */
		scsi_dma_unmap(cmd);

		/* Call the mid-level driver interrupt handler */
		CMD_HANDLE(sp->cmd) = (unsigned char *)INVALID_HANDLE;
		ha->actthreads--;

		(*(cmd)->scsi_done)(cmd);

		if(sp->wait != NULL)
			complete(sp->wait);
	}
	LEAVE("qla1280_done");
}

/*
 * Translates a ISP error to a Linux SCSI error
 */
static int
qla1280_return_status(struct response * sts, struct scsi_cmnd *cp)
{
	int host_status = DID_ERROR;
	uint16_t comp_status = le16_to_cpu(sts->comp_status);
	uint16_t state_flags = le16_to_cpu(sts->state_flags);
	uint32_t residual_length = le32_to_cpu(sts->residual_length);
	uint16_t scsi_status = le16_to_cpu(sts->scsi_status);
#if DEBUG_QLA1280_INTR
	static char *reason[] = {
		"DID_OK",
		"DID_NO_CONNECT",
		"DID_BUS_BUSY",
		"DID_TIME_OUT",
		"DID_BAD_TARGET",
		"DID_ABORT",
		"DID_PARITY",
		"DID_ERROR",
		"DID_RESET",
		"DID_BAD_INTR"
	};
#endif				/* DEBUG_QLA1280_INTR */

	ENTER("qla1280_return_status");

#if DEBUG_QLA1280_INTR
	/*
	  dprintk(1, "qla1280_return_status: compl status = 0x%04x\n",
	  comp_status);
	*/
#endif

	switch (comp_status) {
	case CS_COMPLETE:
		host_status = DID_OK;
		break;

	case CS_INCOMPLETE:
		if (!(state_flags & SF_GOT_BUS))
			host_status = DID_NO_CONNECT;
		else if (!(state_flags & SF_GOT_TARGET))
			host_status = DID_BAD_TARGET;
		else if (!(state_flags & SF_SENT_CDB))
			host_status = DID_ERROR;
		else if (!(state_flags & SF_TRANSFERRED_DATA))
			host_status = DID_ERROR;
		else if (!(state_flags & SF_GOT_STATUS))
			host_status = DID_ERROR;
		else if (!(state_flags & SF_GOT_SENSE))
			host_status = DID_ERROR;
		break;

	case CS_RESET:
		host_status = DID_RESET;
		break;

	case CS_ABORTED:
		host_status = DID_ABORT;
		break;

	case CS_TIMEOUT:
		host_status = DID_TIME_OUT;
		break;

	case CS_DATA_OVERRUN:
		dprintk(2, "Data overrun 0x%x\n", residual_length);
		dprintk(2, "qla1280_return_status: response packet data\n");
		qla1280_dump_buffer(2, (char *)sts, RESPONSE_ENTRY_SIZE);
		host_status = DID_ERROR;
		break;

	case CS_DATA_UNDERRUN:
		if ((scsi_bufflen(cp) - residual_length) <
		    cp->underflow) {
			printk(KERN_WARNING
			       "scsi: Underflow detected - retrying "
			       "command.\n");
			host_status = DID_ERROR;
		} else {
			scsi_set_resid(cp, residual_length);
			host_status = DID_OK;
		}
		break;

	default:
		host_status = DID_ERROR;
		break;
	}

#if DEBUG_QLA1280_INTR
	dprintk(1, "qla1280 ISP status: host status (%s) scsi status %x\n",
		reason[host_status], scsi_status);
#endif

	LEAVE("qla1280_return_status");

	return (scsi_status & 0xff) | (host_status << 16);
}

/****************************************************************************/
/*                QLogic ISP1280 Hardware Support Functions.                */
/****************************************************************************/

/*
 * qla1280_initialize_adapter
 *      Initialize board.
 *
 * Input:
 *      ha = adapter block pointer.
 *
 * Returns:
 *      0 = success
 */
static int __devinit
qla1280_initialize_adapter(struct scsi_qla_host *ha)
{
	struct device_reg __iomem *reg;
	int status;
	int bus;
	unsigned long flags;

	ENTER("qla1280_initialize_adapter");

	/* Clear adapter flags. */
	ha->flags.online = 0;
	ha->flags.disable_host_adapter = 0;
	ha->flags.reset_active = 0;
	ha->flags.abort_isp_active = 0;

#if defined(CONFIG_IA64_GENERIC) || defined(CONFIG_IA64_SGI_SN2)
	if (ia64_platform_is("sn2")) {
		printk(KERN_INFO "scsi(%li): Enabling SN2 PCI DMA "
		       "dual channel lockup workaround\n", ha->host_no);
		ha->flags.use_pci_vchannel = 1;
		driver_setup.no_nvram = 1;
	}
#endif

	/* TODO: implement support for the 1040 nvram format */
	if (IS_ISP1040(ha))
		driver_setup.no_nvram = 1;

	dprintk(1, "Configure PCI space for adapter...\n");

	reg = ha->iobase;

	/* Insure mailbox registers are free. */
	WRT_REG_WORD(&reg->semaphore, 0);
	WRT_REG_WORD(&reg->host_cmd, HC_CLR_RISC_INT);
	WRT_REG_WORD(&reg->host_cmd, HC_CLR_HOST_INT);
	RD_REG_WORD(&reg->host_cmd);

	if (qla1280_read_nvram(ha)) {
		dprintk(2, "qla1280_initialize_adapter: failed to read "
			"NVRAM\n");
	}

	/*
	 * It's necessary to grab the spin here as qla1280_mailbox_command
	 * needs to be able to drop the lock unconditionally to wait
	 * for completion.
	 */
	spin_lock_irqsave(ha->host->host_lock, flags);

	status = qla1280_load_firmware(ha);
	if (status) {
		printk(KERN_ERR "scsi(%li): initialize: pci probe failed!\n",
		       ha->host_no);
		goto out;
	}

	/* Setup adapter based on NVRAM parameters. */
	dprintk(1, "scsi(%ld): Configure NVRAM parameters\n", ha->host_no);
	qla1280_nvram_config(ha);

	if (ha->flags.disable_host_adapter) {
		status = 1;
		goto out;
	}

	status = qla1280_init_rings(ha);
	if (status)
		goto out;

	/* Issue SCSI reset, if we can't reset twice then bus is dead */
	for (bus = 0; bus < ha->ports; bus++) {
		if (!ha->bus_settings[bus].disable_scsi_reset &&
		    qla1280_bus_reset(ha, bus) &&
		    qla1280_bus_reset(ha, bus))
			ha->bus_settings[bus].scsi_bus_dead = 1;
	}

	ha->flags.online = 1;
 out:
	spin_unlock_irqrestore(ha->host->host_lock, flags);

	if (status)
		dprintk(2, "qla1280_initialize_adapter: **** FAILED ****\n");

	LEAVE("qla1280_initialize_adapter");
	return status;
}

/*
 * Chip diagnostics
 *      Test chip for proper operation.
 *
 * Input:
 *      ha = adapter block pointer.
 *
 * Returns:
 *      0 = success.
 */
static int
qla1280_chip_diag(struct scsi_qla_host *ha)
{
	uint16_t mb[MAILBOX_REGISTER_COUNT];
	struct device_reg __iomem *reg = ha->iobase;
	int status = 0;
	int cnt;
	uint16_t data;
	dprintk(3, "qla1280_chip_diag: testing device at 0x%p \n", &reg->id_l);

	dprintk(1, "scsi(%ld): Verifying chip\n", ha->host_no);

	/* Soft reset chip and wait for it to finish. */
	WRT_REG_WORD(&reg->ictrl, ISP_RESET);

	/*
	 * We can't do a traditional PCI write flush here by reading
	 * back the register. The card will not respond once the reset
	 * is in action and we end up with a machine check exception
	 * instead. Nothing to do but wait and hope for the best.
	 * A portable pci_write_flush(pdev) call would be very useful here.
	 */
	udelay(20);
	data = qla1280_debounce_register(&reg->ictrl);
	/*
	 * Yet another QLogic gem ;-(
	 */
	for (cnt = 1000000; cnt && data & ISP_RESET; cnt--) {
		udelay(5);
		data = RD_REG_WORD(&reg->ictrl);
	}

	if (!cnt)
		goto fail;

	/* Reset register cleared by chip reset. */
	dprintk(3, "qla1280_chip_diag: reset register cleared by chip reset\n");

	WRT_REG_WORD(&reg->cfg_1, 0);

	/* Reset RISC and disable BIOS which
	   allows RISC to execute out of RAM. */
	WRT_REG_WORD(&reg->host_cmd, HC_RESET_RISC |
		     HC_RELEASE_RISC | HC_DISABLE_BIOS);

	RD_REG_WORD(&reg->id_l);	/* Flush PCI write */
	data = qla1280_debounce_register(&reg->mailbox0);

	/*
	 * I *LOVE* this code!
	 */
	for (cnt = 1000000; cnt && data == MBS_BUSY; cnt--) {
		udelay(5);
		data = RD_REG_WORD(&reg->mailbox0);
	}

	if (!cnt)
		goto fail;

	/* Check product ID of chip */
	dprintk(3, "qla1280_chip_diag: Checking product ID of chip\n");

	if (RD_REG_WORD(&reg->mailbox1) != PROD_ID_1 ||
	    (RD_REG_WORD(&reg->mailbox2) != PROD_ID_2 &&
	     RD_REG_WORD(&reg->mailbox2) != PROD_ID_2a) ||
	    RD_REG_WORD(&reg->mailbox3) != PROD_ID_3 ||
	    RD_REG_WORD(&reg->mailbox4) != PROD_ID_4) {
		printk(KERN_INFO "qla1280: Wrong product ID = "
		       "0x%x,0x%x,0x%x,0x%x\n",
		       RD_REG_WORD(&reg->mailbox1),
		       RD_REG_WORD(&reg->mailbox2),
		       RD_REG_WORD(&reg->mailbox3),
		       RD_REG_WORD(&reg->mailbox4));
		goto fail;
	}

	/*
	 * Enable ints early!!!
	 */
	qla1280_enable_intrs(ha);

	dprintk(1, "qla1280_chip_diag: Checking mailboxes of chip\n");
	/* Wrap Incoming Mailboxes Test. */
	mb[0] = MBC_MAILBOX_REGISTER_TEST;
	mb[1] = 0xAAAA;
	mb[2] = 0x5555;
	mb[3] = 0xAA55;
	mb[4] = 0x55AA;
	mb[5] = 0xA5A5;
	mb[6] = 0x5A5A;
	mb[7] = 0x2525;

	status = qla1280_mailbox_command(ha, 0xff, mb);
	if (status)
		goto fail;

	if (mb[1] != 0xAAAA || mb[2] != 0x5555 || mb[3] != 0xAA55 ||
	    mb[4] != 0x55AA || mb[5] != 0xA5A5 || mb[6] != 0x5A5A ||
	    mb[7] != 0x2525) {
		printk(KERN_INFO "qla1280: Failed mbox check\n");
		goto fail;
	}

	dprintk(3, "qla1280_chip_diag: exiting normally\n");
	return 0;
 fail:
	dprintk(2, "qla1280_chip_diag: **** FAILED ****\n");
	return status;
}

static int
qla1280_load_firmware_pio(struct scsi_qla_host *ha)
{
	uint16_t risc_address, *risc_code_address, risc_code_size;
	uint16_t mb[MAILBOX_REGISTER_COUNT], i;
	int err;

	/* Load RISC code. */
	risc_address = *ql1280_board_tbl[ha->devnum].fwstart;
	risc_code_address = ql1280_board_tbl[ha->devnum].fwcode;
	risc_code_size = *ql1280_board_tbl[ha->devnum].fwlen;

	for (i = 0; i < risc_code_size; i++) {
		mb[0] = MBC_WRITE_RAM_WORD;
		mb[1] = risc_address + i;
		mb[2] = risc_code_address[i];

		err = qla1280_mailbox_command(ha, BIT_0 | BIT_1 | BIT_2, mb);
		if (err) {
			printk(KERN_ERR "scsi(%li): Failed to load firmware\n",
					ha->host_no);
			return err;
		}
	}

	return 0;
}

#define DUMP_IT_BACK 0		/* for debug of RISC loading */
static int
qla1280_load_firmware_dma(struct scsi_qla_host *ha)
{
	uint16_t risc_address, *risc_code_address, risc_code_size;
	uint16_t mb[MAILBOX_REGISTER_COUNT], cnt;
	int err = 0, num, i;
#if DUMP_IT_BACK
	uint8_t *sp, *tbuf;
	dma_addr_t p_tbuf;

	tbuf = pci_alloc_consistent(ha->pdev, 8000, &p_tbuf);
	if (!tbuf)
		return -ENOMEM;
#endif

	/* Load RISC code. */
	risc_address = *ql1280_board_tbl[ha->devnum].fwstart;
	risc_code_address = ql1280_board_tbl[ha->devnum].fwcode;
	risc_code_size = *ql1280_board_tbl[ha->devnum].fwlen;

	dprintk(1, "%s: DMA RISC code (%i) words\n",
			__FUNCTION__, risc_code_size);

	num = 0;
	while (risc_code_size > 0) {
		int warn __attribute__((unused)) = 0;

		cnt = 2000 >> 1;

		if (cnt > risc_code_size)
			cnt = risc_code_size;

		dprintk(2, "qla1280_setup_chip:  loading risc @ =(0x%p),"
			"%d,%d(0x%x)\n",
			risc_code_address, cnt, num, risc_address);
		for(i = 0; i < cnt; i++)
			((__le16 *)ha->request_ring)[i] =
				cpu_to_le16(risc_code_address[i]);

		mb[0] = MBC_LOAD_RAM;
		mb[1] = risc_address;
		mb[4] = cnt;
		mb[3] = ha->request_dma & 0xffff;
		mb[2] = (ha->request_dma >> 16) & 0xffff;
		mb[7] = pci_dma_hi32(ha->request_dma) & 0xffff;
		mb[6] = pci_dma_hi32(ha->request_dma) >> 16;
		dprintk(2, "%s: op=%d  0x%p = 0x%4x,0x%4x,0x%4x,0x%4x\n",
				__FUNCTION__, mb[0],
				(void *)(long)ha->request_dma,
				mb[6], mb[7], mb[2], mb[3]);
		err = qla1280_mailbox_command(ha, BIT_4 | BIT_3 | BIT_2 |
				BIT_1 | BIT_0, mb);
		if (err) {
			printk(KERN_ERR "scsi(%li): Failed to load partial "
			       "segment of f\n", ha->host_no);
			goto out;
		}

#if DUMP_IT_BACK
		mb[0] = MBC_DUMP_RAM;
		mb[1] = risc_address;
		mb[4] = cnt;
		mb[3] = p_tbuf & 0xffff;
		mb[2] = (p_tbuf >> 16) & 0xffff;
		mb[7] = pci_dma_hi32(p_tbuf) & 0xffff;
		mb[6] = pci_dma_hi32(p_tbuf) >> 16;

		err = qla1280_mailbox_command(ha, BIT_4 | BIT_3 | BIT_2 |
				BIT_1 | BIT_0, mb);
		if (err) {
			printk(KERN_ERR
			       "Failed to dump partial segment of f/w\n");
			goto out;
		}
		sp = (uint8_t *)ha->request_ring;
		for (i = 0; i < (cnt << 1); i++) {
			if (tbuf[i] != sp[i] && warn++ < 10) {
				printk(KERN_ERR "%s: FW compare error @ "
						"byte(0x%x) loop#=%x\n",
						__FUNCTION__, i, num);
				printk(KERN_ERR "%s: FWbyte=%x  "
						"FWfromChip=%x\n",
						__FUNCTION__, sp[i], tbuf[i]);
				/*break; */
			}
		}
#endif
		risc_address += cnt;
		risc_code_size = risc_code_size - cnt;
		risc_code_address = risc_code_address + cnt;
		num++;
	}

 out:
#if DUMP_IT_BACK
	pci_free_consistent(ha->pdev, 8000, tbuf, p_tbuf);
#endif
	return err;
}

static int
qla1280_start_firmware(struct scsi_qla_host *ha)
{
	uint16_t mb[MAILBOX_REGISTER_COUNT];
	int err;

	dprintk(1, "%s: Verifying checksum of loaded RISC code.\n",
			__FUNCTION__);

	/* Verify checksum of loaded RISC code. */
	mb[0] = MBC_VERIFY_CHECKSUM;
	/* mb[1] = ql12_risc_code_addr01; */
	mb[1] = *ql1280_board_tbl[ha->devnum].fwstart;
	err = qla1280_mailbox_command(ha, BIT_1 | BIT_0, mb);
	if (err) {
		printk(KERN_ERR "scsi(%li): RISC checksum failed.\n", ha->host_no);
		return err;
	}

	/* Start firmware execution. */
	dprintk(1, "%s: start firmware running.\n", __FUNCTION__);
	mb[0] = MBC_EXECUTE_FIRMWARE;
	mb[1] = *ql1280_board_tbl[ha->devnum].fwstart;
	err = qla1280_mailbox_command(ha, BIT_1 | BIT_0, &mb[0]);
	if (err) {
		printk(KERN_ERR "scsi(%li): Failed to start firmware\n",
				ha->host_no);
	}

	return err;
}

static int
qla1280_load_firmware(struct scsi_qla_host *ha)
{
	int err;

	err = qla1280_chip_diag(ha);
	if (err)
		goto out;
	if (IS_ISP1040(ha))
		err = qla1280_load_firmware_pio(ha);
	else
		err = qla1280_load_firmware_dma(ha);
	if (err)
		goto out;
	err = qla1280_start_firmware(ha);
 out:
	return err;
}

/*
 * Initialize rings
 *
 * Input:
 *      ha                = adapter block pointer.
 *      ha->request_ring  = request ring virtual address
 *      ha->response_ring = response ring virtual address
 *      ha->request_dma   = request ring physical address
 *      ha->response_dma  = response ring physical address
 *
 * Returns:
 *      0 = success.
 */
static int
qla1280_init_rings(struct scsi_qla_host *ha)
{
	uint16_t mb[MAILBOX_REGISTER_COUNT];
	int status = 0;

	ENTER("qla1280_init_rings");

	/* Clear outstanding commands array. */
	memset(ha->outstanding_cmds, 0,
	       sizeof(struct srb *) * MAX_OUTSTANDING_COMMANDS);

	/* Initialize request queue. */
	ha->request_ring_ptr = ha->request_ring;
	ha->req_ring_index = 0;
	ha->req_q_cnt = REQUEST_ENTRY_CNT;
	/* mb[0] = MBC_INIT_REQUEST_QUEUE; */
	mb[0] = MBC_INIT_REQUEST_QUEUE_A64;
	mb[1] = REQUEST_ENTRY_CNT;
	mb[3] = ha->request_dma & 0xffff;
	mb[2] = (ha->request_dma >> 16) & 0xffff;
	mb[4] = 0;
	mb[7] = pci_dma_hi32(ha->request_dma) & 0xffff;
	mb[6] = pci_dma_hi32(ha->request_dma) >> 16;
	if (!(status = qla1280_mailbox_command(ha, BIT_7 | BIT_6 | BIT_4 |
					       BIT_3 | BIT_2 | BIT_1 | BIT_0,
					       &mb[0]))) {
		/* Initialize response queue. */
		ha->response_ring_ptr = ha->response_ring;
		ha->rsp_ring_index = 0;
		/* mb[0] = MBC_INIT_RESPONSE_QUEUE; */
		mb[0] = MBC_INIT_RESPONSE_QUEUE_A64;
		mb[1] = RESPONSE_ENTRY_CNT;
		mb[3] = ha->response_dma & 0xffff;
		mb[2] = (ha->response_dma >> 16) & 0xffff;
		mb[5] = 0;
		mb[7] = pci_dma_hi32(ha->response_dma) & 0xffff;
		mb[6] = pci_dma_hi32(ha->response_dma) >> 16;
		status = qla1280_mailbox_command(ha, BIT_7 | BIT_6 | BIT_5 |
						 BIT_3 | BIT_2 | BIT_1 | BIT_0,
						 &mb[0]);
	}

	if (status)
		dprintk(2, "qla1280_init_rings: **** FAILED ****\n");

	LEAVE("qla1280_init_rings");
	return status;
}

static void
qla1280_print_settings(struct nvram *nv)
{
	dprintk(1, "qla1280 : initiator scsi id bus[0]=%d\n",
		nv->bus[0].config_1.initiator_id);
	dprintk(1, "qla1280 : initiator scsi id bus[1]=%d\n",
		nv->bus[1].config_1.initiator_id);

	dprintk(1, "qla1280 : bus reset delay[0]=%d\n",
		nv->bus[0].bus_reset_delay);
	dprintk(1, "qla1280 : bus reset delay[1]=%d\n",
		nv->bus[1].bus_reset_delay);

	dprintk(1, "qla1280 : retry count[0]=%d\n", nv->bus[0].retry_count);
	dprintk(1, "qla1280 : retry delay[0]=%d\n", nv->bus[0].retry_delay);
	dprintk(1, "qla1280 : retry count[1]=%d\n", nv->bus[1].retry_count);
	dprintk(1, "qla1280 : retry delay[1]=%d\n", nv->bus[1].retry_delay);

	dprintk(1, "qla1280 : async data setup time[0]=%d\n",
		nv->bus[0].config_2.async_data_setup_time);
	dprintk(1, "qla1280 : async data setup time[1]=%d\n",
		nv->bus[1].config_2.async_data_setup_time);

	dprintk(1, "qla1280 : req/ack active negation[0]=%d\n",
		nv->bus[0].config_2.req_ack_active_negation);
	dprintk(1, "qla1280 : req/ack active negation[1]=%d\n",
		nv->bus[1].config_2.req_ack_active_negation);

	dprintk(1, "qla1280 : data line active negation[0]=%d\n",
		nv->bus[0].config_2.data_line_active_negation);
	dprintk(1, "qla1280 : data line active negation[1]=%d\n",
		nv->bus[1].config_2.data_line_active_negation);

	dprintk(1, "qla1280 : disable loading risc code=%d\n",
		nv->cntr_flags_1.disable_loading_risc_code);

	dprintk(1, "qla1280 : enable 64bit addressing=%d\n",
		nv->cntr_flags_1.enable_64bit_addressing);

	dprintk(1, "qla1280 : selection timeout limit[0]=%d\n",
		nv->bus[0].selection_timeout);
	dprintk(1, "qla1280 : selection timeout limit[1]=%d\n",
		nv->bus[1].selection_timeout);

	dprintk(1, "qla1280 : max queue depth[0]=%d\n",
		nv->bus[0].max_queue_depth);
	dprintk(1, "qla1280 : max queue depth[1]=%d\n",
		nv->bus[1].max_queue_depth);
}

static void
qla1280_set_target_defaults(struct scsi_qla_host *ha, int bus, int target)
{
	struct nvram *nv = &ha->nvram;

	nv->bus[bus].target[target].parameter.renegotiate_on_error = 1;
	nv->bus[bus].target[target].parameter.auto_request_sense = 1;
	nv->bus[bus].target[target].parameter.tag_queuing = 1;
	nv->bus[bus].target[target].parameter.enable_sync = 1;
#if 1	/* Some SCSI Processors do not seem to like this */
	nv->bus[bus].target[target].parameter.enable_wide = 1;
#endif
	nv->bus[bus].target[target].execution_throttle =
		nv->bus[bus].max_queue_depth - 1;
	nv->bus[bus].target[target].parameter.parity_checking = 1;
	nv->bus[bus].target[target].parameter.disconnect_allowed = 1;

	if (IS_ISP1x160(ha)) {
		nv->bus[bus].target[target].flags.flags1x160.device_enable = 1;
		nv->bus[bus].target[target].flags.flags1x160.sync_offset = 0x0e;
		nv->bus[bus].target[target].sync_period = 9;
		nv->bus[bus].target[target].ppr_1x160.flags.enable_ppr = 1;
		nv->bus[bus].target[target].ppr_1x160.flags.ppr_options = 2;
		nv->bus[bus].target[target].ppr_1x160.flags.ppr_bus_width = 1;
	} else {
		nv->bus[bus].target[target].flags.flags1x80.device_enable = 1;
		nv->bus[bus].target[target].flags.flags1x80.sync_offset = 12;
		nv->bus[bus].target[target].sync_period = 10;
	}
}

static void
qla1280_set_defaults(struct scsi_qla_host *ha)
{
	struct nvram *nv = &ha->nvram;
	int bus, target;

	dprintk(1, "Using defaults for NVRAM: \n");
	memset(nv, 0, sizeof(struct nvram));

	/* nv->cntr_flags_1.disable_loading_risc_code = 1; */
	nv->firmware_feature.f.enable_fast_posting = 1;
	nv->firmware_feature.f.disable_synchronous_backoff = 1;
	nv->termination.scsi_bus_0_control = 3;
	nv->termination.scsi_bus_1_control = 3;
	nv->termination.auto_term_support = 1;

	/*
	 * Set default FIFO magic - What appropriate values would be here
	 * is unknown. This is what I have found testing with 12160s.
	 *
	 * Now, I would love the magic decoder ring for this one, the
	 * header file provided by QLogic seems to be bogus or incomplete
	 * at best.
	 */
	nv->isp_config.burst_enable = 1;
	if (IS_ISP1040(ha))
		nv->isp_config.fifo_threshold |= 3;
	else
		nv->isp_config.fifo_threshold |= 4;

	if (IS_ISP1x160(ha))
		nv->isp_parameter = 0x01; /* fast memory enable */

	for (bus = 0; bus < MAX_BUSES; bus++) {
		nv->bus[bus].config_1.initiator_id = 7;
		nv->bus[bus].config_2.req_ack_active_negation = 1;
		nv->bus[bus].config_2.data_line_active_negation = 1;
		nv->bus[bus].selection_timeout = 250;
		nv->bus[bus].max_queue_depth = 256;

		if (IS_ISP1040(ha)) {
			nv->bus[bus].bus_reset_delay = 3;
			nv->bus[bus].config_2.async_data_setup_time = 6;
			nv->bus[bus].retry_delay = 1;
		} else {
			nv->bus[bus].bus_reset_delay = 5;
			nv->bus[bus].config_2.async_data_setup_time = 8;
		}

		for (target = 0; target < MAX_TARGETS; target++)
			qla1280_set_target_defaults(ha, bus, target);
	}
}

static int
qla1280_config_target(struct scsi_qla_host *ha, int bus, int target)
{
	struct nvram *nv = &ha->nvram;
	uint16_t mb[MAILBOX_REGISTER_COUNT];
	int status, lun;
	uint16_t flag;

	/* Set Target Parameters. */
	mb[0] = MBC_SET_TARGET_PARAMETERS;
	mb[1] = (uint16_t)((bus ? target | BIT_7 : target) << 8);

	/*
	 * Do not enable sync and ppr for the initial INQUIRY run. We
	 * enable this later if we determine the target actually
	 * supports it.
	 */
	mb[2] = (TP_RENEGOTIATE | TP_AUTO_REQUEST_SENSE | TP_TAGGED_QUEUE
		 | TP_WIDE | TP_PARITY | TP_DISCONNECT);

	if (IS_ISP1x160(ha))
		mb[3] =	nv->bus[bus].target[target].flags.flags1x160.sync_offset << 8;
	else
		mb[3] =	nv->bus[bus].target[target].flags.flags1x80.sync_offset << 8;
	mb[3] |= nv->bus[bus].target[target].sync_period;
	status = qla1280_mailbox_command(ha, 0x0f, mb);

	/* Save Tag queuing enable flag. */
	flag = (BIT_0 << target) & mb[0];
	if (nv->bus[bus].target[target].parameter.tag_queuing)
		ha->bus_settings[bus].qtag_enables |= flag;

	/* Save Device enable flag. */
	if (IS_ISP1x160(ha)) {
		if (nv->bus[bus].target[target].flags.flags1x160.device_enable)
			ha->bus_settings[bus].device_enables |= flag;
		ha->bus_settings[bus].lun_disables |= 0;
	} else {
		if (nv->bus[bus].target[target].flags.flags1x80.device_enable)
			ha->bus_settings[bus].device_enables |= flag;
		/* Save LUN disable flag. */
		if (nv->bus[bus].target[target].flags.flags1x80.lun_disable)
			ha->bus_settings[bus].lun_disables |= flag;
	}

	/* Set Device Queue Parameters. */
	for (lun = 0; lun < MAX_LUNS; lun++) {
		mb[0] = MBC_SET_DEVICE_QUEUE;
		mb[1] = (uint16_t)((bus ? target | BIT_7 : target) << 8);
		mb[1] |= lun;
		mb[2] = nv->bus[bus].max_queue_depth;
		mb[3] = nv->bus[bus].target[target].execution_throttle;
		status |= qla1280_mailbox_command(ha, 0x0f, mb);
	}

	return status;
}

static int
qla1280_config_bus(struct scsi_qla_host *ha, int bus)
{
	struct nvram *nv = &ha->nvram;
	uint16_t mb[MAILBOX_REGISTER_COUNT];
	int target, status;

	/* SCSI Reset Disable. */
	ha->bus_settings[bus].disable_scsi_reset =
		nv->bus[bus].config_1.scsi_reset_disable;

	/* Initiator ID. */
	ha->bus_settings[bus].id = nv->bus[bus].config_1.initiator_id;
	mb[0] = MBC_SET_INITIATOR_ID;
	mb[1] = bus ? ha->bus_settings[bus].id | BIT_7 :
		ha->bus_settings[bus].id;
	status = qla1280_mailbox_command(ha, BIT_1 | BIT_0, &mb[0]);

	/* Reset Delay. */
	ha->bus_settings[bus].bus_reset_delay =
		nv->bus[bus].bus_reset_delay;

	/* Command queue depth per device. */
	ha->bus_settings[bus].hiwat = nv->bus[bus].max_queue_depth - 1;

	/* Set target parameters. */
	for (target = 0; target < MAX_TARGETS; target++)
		status |= qla1280_config_target(ha, bus, target);

	return status;
}

static int
qla1280_nvram_config(struct scsi_qla_host *ha)
{
	struct device_reg __iomem *reg = ha->iobase;
	struct nvram *nv = &ha->nvram;
	int bus, target, status = 0;
	uint16_t mb[MAILBOX_REGISTER_COUNT];

	ENTER("qla1280_nvram_config");

	if (ha->nvram_valid) {
		/* Always force AUTO sense for LINUX SCSI */
		for (bus = 0; bus < MAX_BUSES; bus++)
			for (target = 0; target < MAX_TARGETS; target++) {
				nv->bus[bus].target[target].parameter.
					auto_request_sense = 1;
			}
	} else {
		qla1280_set_defaults(ha);
	}

	qla1280_print_settings(nv);

	/* Disable RISC load of firmware. */
	ha->flags.disable_risc_code_load =
		nv->cntr_flags_1.disable_loading_risc_code;

	if (IS_ISP1040(ha)) {
		uint16_t hwrev, cfg1, cdma_conf, ddma_conf;

		hwrev = RD_REG_WORD(&reg->cfg_0) & ISP_CFG0_HWMSK;

		cfg1 = RD_REG_WORD(&reg->cfg_1) & ~(BIT_4 | BIT_5 | BIT_6);
		cdma_conf = RD_REG_WORD(&reg->cdma_cfg);
		ddma_conf = RD_REG_WORD(&reg->ddma_cfg);

		/* Busted fifo, says mjacob. */
		if (hwrev != ISP_CFG0_1040A)
			cfg1 |= nv->isp_config.fifo_threshold << 4;

		cfg1 |= nv->isp_config.burst_enable << 2;
		WRT_REG_WORD(&reg->cfg_1, cfg1);

		WRT_REG_WORD(&reg->cdma_cfg, cdma_conf | CDMA_CONF_BENAB);
		WRT_REG_WORD(&reg->ddma_cfg, cdma_conf | DDMA_CONF_BENAB);
	} else {
		uint16_t cfg1, term;

		/* Set ISP hardware DMA burst */
		cfg1 = nv->isp_config.fifo_threshold << 4;
		cfg1 |= nv->isp_config.burst_enable << 2;
		/* Enable DMA arbitration on dual channel controllers */
		if (ha->ports > 1)
			cfg1 |= BIT_13;
		WRT_REG_WORD(&reg->cfg_1, cfg1);

		/* Set SCSI termination. */
		WRT_REG_WORD(&reg->gpio_enable,
			     BIT_7 | BIT_3 | BIT_2 | BIT_1 | BIT_0);
		term = nv->termination.scsi_bus_1_control;
		term |= nv->termination.scsi_bus_0_control << 2;
		term |= nv->termination.auto_term_support << 7;
		RD_REG_WORD(&reg->id_l);	/* Flush PCI write */
		WRT_REG_WORD(&reg->gpio_data, term);
	}
	RD_REG_WORD(&reg->id_l);	/* Flush PCI write */

	/* ISP parameter word. */
	mb[0] = MBC_SET_SYSTEM_PARAMETER;
	mb[1] = nv->isp_parameter;
	status |= qla1280_mailbox_command(ha, BIT_1 | BIT_0, &mb[0]);

	if (IS_ISP1x40(ha)) {
		/* clock rate - for qla1240 and older, only */
		mb[0] = MBC_SET_CLOCK_RATE;
		mb[1] = 40;
	 	status |= qla1280_mailbox_command(ha, BIT_1 | BIT_0, mb);
	}

	/* Firmware feature word. */
	mb[0] = MBC_SET_FIRMWARE_FEATURES;
	mb[1] = nv->firmware_feature.f.enable_fast_posting;
	mb[1] |= nv->firmware_feature.f.report_lvd_bus_transition << 1;
	mb[1] |= nv->firmware_feature.f.disable_synchronous_backoff << 5;
#if defined(CONFIG_IA64_GENERIC) || defined (CONFIG_IA64_SGI_SN2)
	if (ia64_platform_is("sn2")) {
		printk(KERN_INFO "scsi(%li): Enabling SN2 PCI DMA "
		       "workaround\n", ha->host_no);
		mb[1] |= nv->firmware_feature.f.unused_9 << 9; /* XXX */
	}
#endif
	status |= qla1280_mailbox_command(ha, BIT_1 | BIT_0, mb);

	/* Retry count and delay. */
	mb[0] = MBC_SET_RETRY_COUNT;
	mb[1] = nv->bus[0].retry_count;
	mb[2] = nv->bus[0].retry_delay;
	mb[6] = nv->bus[1].retry_count;
	mb[7] = nv->bus[1].retry_delay;
	status |= qla1280_mailbox_command(ha, BIT_7 | BIT_6 | BIT_2 |
					  BIT_1 | BIT_0, &mb[0]);

	/* ASYNC data setup time. */
	mb[0] = MBC_SET_ASYNC_DATA_SETUP;
	mb[1] = nv->bus[0].config_2.async_data_setup_time;
	mb[2] = nv->bus[1].config_2.async_data_setup_time;
	status |= qla1280_mailbox_command(ha, BIT_2 | BIT_1 | BIT_0, &mb[0]);

	/* Active negation states. */
	mb[0] = MBC_SET_ACTIVE_NEGATION;
	mb[1] = 0;
	if (nv->bus[0].config_2.req_ack_active_negation)
		mb[1] |= BIT_5;
	if (nv->bus[0].config_2.data_line_active_negation)
		mb[1] |= BIT_4;
	mb[2] = 0;
	if (nv->bus[1].config_2.req_ack_active_negation)
		mb[2] |= BIT_5;
	if (nv->bus[1].config_2.data_line_active_negation)
		mb[2] |= BIT_4;
	status |= qla1280_mailbox_command(ha, BIT_2 | BIT_1 | BIT_0, mb);

	mb[0] = MBC_SET_DATA_OVERRUN_RECOVERY;
	mb[1] = 2;	/* Reset SCSI bus and return all outstanding IO */
	status |= qla1280_mailbox_command(ha, BIT_1 | BIT_0, mb);

	/* thingy */
	mb[0] = MBC_SET_PCI_CONTROL;
	mb[1] = BIT_1;	/* Data DMA Channel Burst Enable */
	mb[2] = BIT_1;	/* Command DMA Channel Burst Enable */
	status |= qla1280_mailbox_command(ha, BIT_2 | BIT_1 | BIT_0, mb);

	mb[0] = MBC_SET_TAG_AGE_LIMIT;
	mb[1] = 8;
	status |= qla1280_mailbox_command(ha, BIT_1 | BIT_0, mb);

	/* Selection timeout. */
	mb[0] = MBC_SET_SELECTION_TIMEOUT;
	mb[1] = nv->bus[0].selection_timeout;
	mb[2] = nv->bus[1].selection_timeout;
	status |= qla1280_mailbox_command(ha, BIT_2 | BIT_1 | BIT_0, mb);

	for (bus = 0; bus < ha->ports; bus++)
		status |= qla1280_config_bus(ha, bus);

	if (status)
		dprintk(2, "qla1280_nvram_config: **** FAILED ****\n");

	LEAVE("qla1280_nvram_config");
	return status;
}

/*
 * Get NVRAM data word
 *      Calculates word position in NVRAM and calls request routine to
 *      get the word from NVRAM.
 *
 * Input:
 *      ha      = adapter block pointer.
 *      address = NVRAM word address.
 *
 * Returns:
 *      data word.
 */
static uint16_t
qla1280_get_nvram_word(struct scsi_qla_host *ha, uint32_t address)
{
	uint32_t nv_cmd;
	uint16_t data;

	nv_cmd = address << 16;
	nv_cmd |= NV_READ_OP;

	data = le16_to_cpu(qla1280_nvram_request(ha, nv_cmd));

	dprintk(8, "qla1280_get_nvram_word: exiting normally NVRAM data = "
		"0x%x", data);

	return data;
}

/*
 * NVRAM request
 *      Sends read command to NVRAM and gets data from NVRAM.
 *
 * Input:
 *      ha     = adapter block pointer.
 *      nv_cmd = Bit 26     = start bit
 *               Bit 25, 24 = opcode
 *               Bit 23-16  = address
 *               Bit 15-0   = write data
 *
 * Returns:
 *      data word.
 */
static uint16_t
qla1280_nvram_request(struct scsi_qla_host *ha, uint32_t nv_cmd)
{
	struct device_reg __iomem *reg = ha->iobase;
	int cnt;
	uint16_t data = 0;
	uint16_t reg_data;

	/* Send command to NVRAM. */

	nv_cmd <<= 5;
	for (cnt = 0; cnt < 11; cnt++) {
		if (nv_cmd & BIT_31)
			qla1280_nv_write(ha, NV_DATA_OUT);
		else
			qla1280_nv_write(ha, 0);
		nv_cmd <<= 1;
	}

	/* Read data from NVRAM. */

	for (cnt = 0; cnt < 16; cnt++) {
		WRT_REG_WORD(&reg->nvram, (NV_SELECT | NV_CLOCK));
		RD_REG_WORD(&reg->id_l);	/* Flush PCI write */
		NVRAM_DELAY();
		data <<= 1;
		reg_data = RD_REG_WORD(&reg->nvram);
		if (reg_data & NV_DATA_IN)
			data |= BIT_0;
		WRT_REG_WORD(&reg->nvram, NV_SELECT);
		RD_REG_WORD(&reg->id_l);	/* Flush PCI write */
		NVRAM_DELAY();
	}

	/* Deselect chip. */

	WRT_REG_WORD(&reg->nvram, NV_DESELECT);
	RD_REG_WORD(&reg->id_l);	/* Flush PCI write */
	NVRAM_DELAY();

	return data;
}

static void
qla1280_nv_write(struct scsi_qla_host *ha, uint16_t data)
{
	struct device_reg __iomem *reg = ha->iobase;

	WRT_REG_WORD(&reg->nvram, data | NV_SELECT);
	RD_REG_WORD(&reg->id_l);	/* Flush PCI write */
	NVRAM_DELAY();
	WRT_REG_WORD(&reg->nvram, data | NV_SELECT | NV_CLOCK);
	RD_REG_WORD(&reg->id_l);	/* Flush PCI write */
	NVRAM_DELAY();
	WRT_REG_WORD(&reg->nvram, data | NV_SELECT);
	RD_REG_WORD(&reg->id_l);	/* Flush PCI write */
	NVRAM_DELAY();
}

/*
 * Mailbox Command
 *      Issue mailbox command and waits for completion.
 *
 * Input:
 *      ha = adapter block pointer.
 *      mr = mailbox registers to load.
 *      mb = data pointer for mailbox registers.
 *
 * Output:
 *      mb[MAILBOX_REGISTER_COUNT] = returned mailbox data.
 *
 * Returns:
 *      0 = success
 */
static int
qla1280_mailbox_command(struct scsi_qla_host *ha, uint8_t mr, uint16_t *mb)
{
	struct device_reg __iomem *reg = ha->iobase;
#if 0
	LIST_HEAD(done_q);
#endif
	int status = 0;
	int cnt;
	uint16_t *optr, *iptr;
	uint16_t __iomem *mptr;
	uint16_t data;
	DECLARE_COMPLETION_ONSTACK(wait);
	struct timer_list timer;

	ENTER("qla1280_mailbox_command");

	if (ha->mailbox_wait) {
		printk(KERN_ERR "Warning mailbox wait already in use!\n");
	}
	ha->mailbox_wait = &wait;

	/*
	 * We really should start out by verifying that the mailbox is
	 * available before starting sending the command data
	 */
	/* Load mailbox registers. */
	mptr = (uint16_t __iomem *) &reg->mailbox0;
	iptr = mb;
	for (cnt = 0; cnt < MAILBOX_REGISTER_COUNT; cnt++) {
		if (mr & BIT_0) {
			WRT_REG_WORD(mptr, (*iptr));
		}

		mr >>= 1;
		mptr++;
		iptr++;
	}

	/* Issue set host interrupt command. */

	/* set up a timer just in case we're really jammed */
	init_timer(&timer);
	timer.expires = jiffies + 20*HZ;
	timer.data = (unsigned long)ha;
	timer.function = qla1280_mailbox_timeout;
	add_timer(&timer);

	spin_unlock_irq(ha->host->host_lock);
	WRT_REG_WORD(&reg->host_cmd, HC_SET_HOST_INT);
	data = qla1280_debounce_register(&reg->istatus);

	wait_for_completion(&wait);
	del_timer_sync(&timer);

	spin_lock_irq(ha->host->host_lock);

	ha->mailbox_wait = NULL;

	/* Check for mailbox command timeout. */
	if (ha->mailbox_out[0] != MBS_CMD_CMP) {
		printk(KERN_WARNING "qla1280_mailbox_command: Command failed, "
		       "mailbox0 = 0x%04x, mailbox_out0 = 0x%04x, istatus = "
		       "0x%04x\n", 
		       mb[0], ha->mailbox_out[0], RD_REG_WORD(&reg->istatus));
		printk(KERN_WARNING "m0 %04x, m1 %04x, m2 %04x, m3 %04x\n",
		       RD_REG_WORD(&reg->mailbox0), RD_REG_WORD(&reg->mailbox1),
		       RD_REG_WORD(&reg->mailbox2), RD_REG_WORD(&reg->mailbox3));
		printk(KERN_WARNING "m4 %04x, m5 %04x, m6 %04x, m7 %04x\n",
		       RD_REG_WORD(&reg->mailbox4), RD_REG_WORD(&reg->mailbox5),
		       RD_REG_WORD(&reg->mailbox6), RD_REG_WORD(&reg->mailbox7));
		status = 1;
	}

	/* Load return mailbox registers. */
	optr = mb;
	iptr = (uint16_t *) &ha->mailbox_out[0];
	mr = MAILBOX_REGISTER_COUNT;
	memcpy(optr, iptr, MAILBOX_REGISTER_COUNT * sizeof(uint16_t));

#if 0
	/* Go check for any response interrupts pending. */
	qla1280_isr(ha, &done_q);
#endif

	if (ha->flags.reset_marker)
		qla1280_rst_aen(ha);

#if 0
	if (!list_empty(&done_q))
		qla1280_done(ha, &done_q);
#endif

	if (status)
		dprintk(2, "qla1280_mailbox_command: **** FAILED, mailbox0 = "
			"0x%x ****\n", mb[0]);

	LEAVE("qla1280_mailbox_command");
	return status;
}

/*
 * qla1280_poll
 *      Polls ISP for interrupts.
 *
 * Input:
 *      ha = adapter block pointer.
 */
static void
qla1280_poll(struct scsi_qla_host *ha)
{
	struct device_reg __iomem *reg = ha->iobase;
	uint16_t data;
	LIST_HEAD(done_q);

	/* ENTER("qla1280_poll"); */

	/* Check for pending interrupts. */
	data = RD_REG_WORD(&reg->istatus);
	if (data & RISC_INT)
		qla1280_isr(ha, &done_q);

	if (!ha->mailbox_wait) {
		if (ha->flags.reset_marker)
			qla1280_rst_aen(ha);
	}

	if (!list_empty(&done_q))
		qla1280_done(ha);

	/* LEAVE("qla1280_poll"); */
}

/*
 * qla1280_bus_reset
 *      Issue SCSI bus reset.
 *
 * Input:
 *      ha  = adapter block pointer.
 *      bus = SCSI bus number.
 *
 * Returns:
 *      0 = success
 */
static int
qla1280_bus_reset(struct scsi_qla_host *ha, int bus)
{
	uint16_t mb[MAILBOX_REGISTER_COUNT];
	uint16_t reset_delay;
	int status;

	dprintk(3, "qla1280_bus_reset: entered\n");

	if (qla1280_verbose)
		printk(KERN_INFO "scsi(%li:%i): Resetting SCSI BUS\n",
		       ha->host_no, bus);

	reset_delay = ha->bus_settings[bus].bus_reset_delay;
	mb[0] = MBC_BUS_RESET;
	mb[1] = reset_delay;
	mb[2] = (uint16_t) bus;
	status = qla1280_mailbox_command(ha, BIT_2 | BIT_1 | BIT_0, &mb[0]);

	if (status) {
		if (ha->bus_settings[bus].failed_reset_count > 2)
			ha->bus_settings[bus].scsi_bus_dead = 1;
		ha->bus_settings[bus].failed_reset_count++;
	} else {
		spin_unlock_irq(ha->host->host_lock);
		ssleep(reset_delay);
		spin_lock_irq(ha->host->host_lock);

		ha->bus_settings[bus].scsi_bus_dead = 0;
		ha->bus_settings[bus].failed_reset_count = 0;
		ha->bus_settings[bus].reset_marker = 0;
		/* Issue marker command. */
		qla1280_marker(ha, bus, 0, 0, MK_SYNC_ALL);
	}

	/*
	 * We should probably call qla1280_set_target_parameters()
	 * here as well for all devices on the bus.
	 */

	if (status)
		dprintk(2, "qla1280_bus_reset: **** FAILED ****\n");
	else
		dprintk(3, "qla1280_bus_reset: exiting normally\n");

	return status;
}

/*
 * qla1280_device_reset
 *      Issue bus device reset message to the target.
 *
 * Input:
 *      ha      = adapter block pointer.
 *      bus     = SCSI BUS number.
 *      target  = SCSI ID.
 *
 * Returns:
 *      0 = success
 */
static int
qla1280_device_reset(struct scsi_qla_host *ha, int bus, int target)
{
	uint16_t mb[MAILBOX_REGISTER_COUNT];
	int status;

	ENTER("qla1280_device_reset");

	mb[0] = MBC_ABORT_TARGET;
	mb[1] = (bus ? (target | BIT_7) : target) << 8;
	mb[2] = 1;
	status = qla1280_mailbox_command(ha, BIT_2 | BIT_1 | BIT_0, &mb[0]);

	/* Issue marker command. */
	qla1280_marker(ha, bus, target, 0, MK_SYNC_ID);

	if (status)
		dprintk(2, "qla1280_device_reset: **** FAILED ****\n");

	LEAVE("qla1280_device_reset");
	return status;
}

/*
 * qla1280_abort_device
 *      Issue an abort message to the device
 *
 * Input:
 *      ha     = adapter block pointer.
 *      bus    = SCSI BUS.
 *      target = SCSI ID.
 *      lun    = SCSI LUN.
 *
 * Returns:
 *      0 = success
 */
static int
qla1280_abort_device(struct scsi_qla_host *ha, int bus, int target, int lun)
{
	uint16_t mb[MAILBOX_REGISTER_COUNT];
	int status;

	ENTER("qla1280_abort_device");

	mb[0] = MBC_ABORT_DEVICE;
	mb[1] = (bus ? target | BIT_7 : target) << 8 | lun;
	status = qla1280_mailbox_command(ha, BIT_1 | BIT_0, &mb[0]);

	/* Issue marker command. */
	qla1280_marker(ha, bus, target, lun, MK_SYNC_ID_LUN);

	if (status)
		dprintk(2, "qla1280_abort_device: **** FAILED ****\n");

	LEAVE("qla1280_abort_device");
	return status;
}

/*
 * qla1280_abort_command
 *      Abort command aborts a specified IOCB.
 *
 * Input:
 *      ha = adapter block pointer.
 *      sp = SB structure pointer.
 *
 * Returns:
 *      0 = success
 */
static int
qla1280_abort_command(struct scsi_qla_host *ha, struct srb * sp, int handle)
{
	uint16_t mb[MAILBOX_REGISTER_COUNT];
	unsigned int bus, target, lun;
	int status;

	ENTER("qla1280_abort_command");

	bus = SCSI_BUS_32(sp->cmd);
	target = SCSI_TCN_32(sp->cmd);
	lun = SCSI_LUN_32(sp->cmd);

	sp->flags |= SRB_ABORT_PENDING;

	mb[0] = MBC_ABORT_COMMAND;
	mb[1] = (bus ? target | BIT_7 : target) << 8 | lun;
	mb[2] = handle >> 16;
	mb[3] = handle & 0xffff;
	status = qla1280_mailbox_command(ha, 0x0f, &mb[0]);

	if (status) {
		dprintk(2, "qla1280_abort_command: **** FAILED ****\n");
		sp->flags &= ~SRB_ABORT_PENDING;
	}


	LEAVE("qla1280_abort_command");
	return status;
}

/*
 * qla1280_reset_adapter
 *      Reset adapter.
 *
 * Input:
 *      ha = adapter block pointer.
 */
static void
qla1280_reset_adapter(struct scsi_qla_host *ha)
{
	struct device_reg __iomem *reg = ha->iobase;

	ENTER("qla1280_reset_adapter");

	/* Disable ISP chip */
	ha->flags.online = 0;
	WRT_REG_WORD(&reg->ictrl, ISP_RESET);
	WRT_REG_WORD(&reg->host_cmd,
		     HC_RESET_RISC | HC_RELEASE_RISC | HC_DISABLE_BIOS);
	RD_REG_WORD(&reg->id_l);	/* Flush PCI write */

	LEAVE("qla1280_reset_adapter");
}

/*
 *  Issue marker command.
 *      Function issues marker IOCB.
 *
 * Input:
 *      ha   = adapter block pointer.
 *      bus  = SCSI BUS number
 *      id   = SCSI ID
 *      lun  = SCSI LUN
 *      type = marker modifier
 */
static void
qla1280_marker(struct scsi_qla_host *ha, int bus, int id, int lun, u8 type)
{
	struct mrk_entry *pkt;

	ENTER("qla1280_marker");

	/* Get request packet. */
	if ((pkt = (struct mrk_entry *) qla1280_req_pkt(ha))) {
		pkt->entry_type = MARKER_TYPE;
		pkt->lun = (uint8_t) lun;
		pkt->target = (uint8_t) (bus ? (id | BIT_7) : id);
		pkt->modifier = type;
		pkt->entry_status = 0;

		/* Issue command to ISP */
		qla1280_isp_cmd(ha);
	}

	LEAVE("qla1280_marker");
}


/*
 * qla1280_64bit_start_scsi
 *      The start SCSI is responsible for building request packets on
 *      request ring and modifying ISP input pointer.
 *
 * Input:
 *      ha = adapter block pointer.
 *      sp = SB structure pointer.
 *
 * Returns:
 *      0 = success, was able to issue command.
 */
#ifdef QLA_64BIT_PTR
static int
qla1280_64bit_start_scsi(struct scsi_qla_host *ha, struct srb * sp)
{
	struct device_reg __iomem *reg = ha->iobase;
	struct scsi_cmnd *cmd = sp->cmd;
	cmd_a64_entry_t *pkt;
	__le32 *dword_ptr;
	dma_addr_t dma_handle;
	int status = 0;
	int cnt;
	int req_cnt;
	int seg_cnt;
	u8 dir;

	ENTER("qla1280_64bit_start_scsi:");

	/* Calculate number of entries and segments required. */
	req_cnt = 1;
	seg_cnt = scsi_dma_map(cmd);
	if (seg_cnt > 0) {
		if (seg_cnt > 2) {
			req_cnt += (seg_cnt - 2) / 5;
			if ((seg_cnt - 2) % 5)
				req_cnt++;
		}
	} else if (seg_cnt < 0) {
		status = 1;
		goto out;
	}

	if ((req_cnt + 2) >= ha->req_q_cnt) {
		/* Calculate number of free request entries. */
		cnt = RD_REG_WORD(&reg->mailbox4);
		if (ha->req_ring_index < cnt)
			ha->req_q_cnt = cnt - ha->req_ring_index;
		else
			ha->req_q_cnt =
				REQUEST_ENTRY_CNT - (ha->req_ring_index - cnt);
	}

	dprintk(3, "Number of free entries=(%d) seg_cnt=0x%x\n",
		ha->req_q_cnt, seg_cnt);

	/* If room for request in request ring. */
	if ((req_cnt + 2) >= ha->req_q_cnt) {
		status = 1;
		dprintk(2, "qla1280_start_scsi: in-ptr=0x%x  req_q_cnt="
			"0x%xreq_cnt=0x%x", ha->req_ring_index, ha->req_q_cnt,
			req_cnt);
		goto out;
	}

	/* Check for room in outstanding command list. */
	for (cnt = 0; cnt < MAX_OUTSTANDING_COMMANDS &&
		     ha->outstanding_cmds[cnt] != 0; cnt++);

	if (cnt >= MAX_OUTSTANDING_COMMANDS) {
		status = 1;
		dprintk(2, "qla1280_start_scsi: NO ROOM IN "
			"OUTSTANDING ARRAY, req_q_cnt=0x%x", ha->req_q_cnt);
		goto out;
	}

	ha->outstanding_cmds[cnt] = sp;
	ha->req_q_cnt -= req_cnt;
	CMD_HANDLE(sp->cmd) = (unsigned char *)(unsigned long)(cnt + 1);

	dprintk(2, "start: cmd=%p sp=%p CDB=%xm, handle %lx\n", cmd, sp,
		cmd->cmnd[0], (long)CMD_HANDLE(sp->cmd));
	dprintk(2, "             bus %i, target %i, lun %i\n",
		SCSI_BUS_32(cmd), SCSI_TCN_32(cmd), SCSI_LUN_32(cmd));
	qla1280_dump_buffer(2, cmd->cmnd, MAX_COMMAND_SIZE);

	/*
	 * Build command packet.
	 */
	pkt = (cmd_a64_entry_t *) ha->request_ring_ptr;

	pkt->entry_type = COMMAND_A64_TYPE;
	pkt->entry_count = (uint8_t) req_cnt;
	pkt->sys_define = (uint8_t) ha->req_ring_index;
	pkt->entry_status = 0;
	pkt->handle = cpu_to_le32(cnt);

	/* Zero out remaining portion of packet. */
	memset(((char *)pkt + 8), 0, (REQUEST_ENTRY_SIZE - 8));

	/* Set ISP command timeout. */
	pkt->timeout = cpu_to_le16(cmd->timeout_per_command/HZ);

	/* Set device target ID and LUN */
	pkt->lun = SCSI_LUN_32(cmd);
	pkt->target = SCSI_BUS_32(cmd) ?
		(SCSI_TCN_32(cmd) | BIT_7) : SCSI_TCN_32(cmd);

	/* Enable simple tag queuing if device supports it. */
	if (cmd->device->simple_tags)
		pkt->control_flags |= cpu_to_le16(BIT_3);

	/* Load SCSI command packet. */
	pkt->cdb_len = cpu_to_le16(CMD_CDBLEN(cmd));
	memcpy(pkt->scsi_cdb, &(CMD_CDBP(cmd)), CMD_CDBLEN(cmd));
	/* dprintk(1, "Build packet for command[0]=0x%x\n",pkt->scsi_cdb[0]); */

	/* Set transfer direction. */
	dir = qla1280_data_direction(cmd);
	pkt->control_flags |= cpu_to_le16(dir);

	/* Set total data segment count. */
	pkt->dseg_count = cpu_to_le16(seg_cnt);

	/*
	 * Load data segments.
	 */
	if (seg_cnt) {	/* If data transfer. */
		struct scatterlist *sg, *s;
		int remseg = seg_cnt;

		sg = scsi_sglist(cmd);

		/* Setup packet address segment pointer. */
		dword_ptr = (u32 *)&pkt->dseg_0_address;

		/* Load command entry data segments. */
		for_each_sg(sg, s, seg_cnt, cnt) {
			if (cnt == 2)
				break;

			dma_handle = sg_dma_address(s);
#if defined(CONFIG_IA64_GENERIC) || defined(CONFIG_IA64_SGI_SN2)
			if (ha->flags.use_pci_vchannel)
				sn_pci_set_vchan(ha->pdev,
						 (unsigned long *)&dma_handle,
						 SCSI_BUS_32(cmd));
#endif
			*dword_ptr++ =
				cpu_to_le32(pci_dma_lo32(dma_handle));
			*dword_ptr++ =
				cpu_to_le32(pci_dma_hi32(dma_handle));
			*dword_ptr++ = cpu_to_le32(sg_dma_len(s));
			dprintk(3, "S/G Segment phys_addr=%x %x, len=0x%x\n",
				cpu_to_le32(pci_dma_hi32(dma_handle)),
				cpu_to_le32(pci_dma_lo32(dma_handle)),
				cpu_to_le32(sg_dma_len(sg_next(s))));
			remseg--;
		}
		dprintk(5, "qla1280_64bit_start_scsi: Scatter/gather "
			"command packet data - b %i, t %i, l %i \n",
			SCSI_BUS_32(cmd), SCSI_TCN_32(cmd),
			SCSI_LUN_32(cmd));
		qla1280_dump_buffer(5, (char *)pkt,
				    REQUEST_ENTRY_SIZE);

		/*
		 * Build continuation packets.
		 */
		dprintk(3, "S/G Building Continuation...seg_cnt=0x%x "
			"remains\n", seg_cnt);

		while (remseg > 0) {
			/* Update sg start */
			sg = s;
			/* Adjust ring index. */
			ha->req_ring_index++;
			if (ha->req_ring_index == REQUEST_ENTRY_CNT) {
				ha->req_ring_index = 0;
				ha->request_ring_ptr =
					ha->request_ring;
			} else
				ha->request_ring_ptr++;

			pkt = (cmd_a64_entry_t *)ha->request_ring_ptr;

			/* Zero out packet. */
			memset(pkt, 0, REQUEST_ENTRY_SIZE);

			/* Load packet defaults. */
			((struct cont_a64_entry *) pkt)->entry_type =
				CONTINUE_A64_TYPE;
			((struct cont_a64_entry *) pkt)->entry_count = 1;
			((struct cont_a64_entry *) pkt)->sys_define =
				(uint8_t)ha->req_ring_index;
			/* Setup packet address segment pointer. */
			dword_ptr =
				(u32 *)&((struct cont_a64_entry *) pkt)->dseg_0_address;

			/* Load continuation entry data segments. */
			for_each_sg(sg, s, remseg, cnt) {
				if (cnt == 5)
					break;
				dma_handle = sg_dma_address(s);
#if defined(CONFIG_IA64_GENERIC) || defined(CONFIG_IA64_SGI_SN2)
				if (ha->flags.use_pci_vchannel)
					sn_pci_set_vchan(ha->pdev,
							 (unsigned long *)&dma_handle,
							 SCSI_BUS_32(cmd));
#endif
				*dword_ptr++ =
					cpu_to_le32(pci_dma_lo32(dma_handle));
				*dword_ptr++ =
					cpu_to_le32(pci_dma_hi32(dma_handle));
				*dword_ptr++ =
					cpu_to_le32(sg_dma_len(s));
				dprintk(3, "S/G Segment Cont. phys_addr=%x %x, len=0x%x\n",
					cpu_to_le32(pci_dma_hi32(dma_handle)),
					cpu_to_le32(pci_dma_lo32(dma_handle)),
					cpu_to_le32(sg_dma_len(s)));
			}
			remseg -= cnt;
			dprintk(5, "qla1280_64bit_start_scsi: "
				"continuation packet data - b %i, t "
				"%i, l %i \n", SCSI_BUS_32(cmd),
				SCSI_TCN_32(cmd), SCSI_LUN_32(cmd));
			qla1280_dump_buffer(5, (char *)pkt,
					    REQUEST_ENTRY_SIZE);
		}
	} else {	/* No data transfer */
		dprintk(5, "qla1280_64bit_start_scsi: No data, command "
			"packet data - b %i, t %i, l %i \n",
			SCSI_BUS_32(cmd), SCSI_TCN_32(cmd), SCSI_LUN_32(cmd));
		qla1280_dump_buffer(5, (char *)pkt, REQUEST_ENTRY_SIZE);
	}
	/* Adjust ring index. */
	ha->req_ring_index++;
	if (ha->req_ring_index == REQUEST_ENTRY_CNT) {
		ha->req_ring_index = 0;
		ha->request_ring_ptr = ha->request_ring;
	} else
		ha->request_ring_ptr++;

	/* Set chip new ring index. */
	dprintk(2,
		"qla1280_64bit_start_scsi: Wakeup RISC for pending command\n");
	sp->flags |= SRB_SENT;
	ha->actthreads++;
	WRT_REG_WORD(&reg->mailbox4, ha->req_ring_index);
	/* Enforce mmio write ordering; see comment in qla1280_isp_cmd(). */
	mmiowb();

 out:
	if (status)
		dprintk(2, "qla1280_64bit_start_scsi: **** FAILED ****\n");
	else
		dprintk(3, "qla1280_64bit_start_scsi: exiting normally\n");

	return status;
}
#else /* !QLA_64BIT_PTR */

/*
 * qla1280_32bit_start_scsi
 *      The start SCSI is responsible for building request packets on
 *      request ring and modifying ISP input pointer.
 *
 *      The Qlogic firmware interface allows every queue slot to have a SCSI
 *      command and up to 4 scatter/gather (SG) entries.  If we need more
 *      than 4 SG entries, then continuation entries are used that can
 *      hold another 7 entries each.  The start routine determines if there
 *      is eought empty slots then build the combination of requests to
 *      fulfill the OS request.
 *
 * Input:
 *      ha = adapter block pointer.
 *      sp = SCSI Request Block structure pointer.
 *
 * Returns:
 *      0 = success, was able to issue command.
 */
static int
qla1280_32bit_start_scsi(struct scsi_qla_host *ha, struct srb * sp)
{
	struct device_reg __iomem *reg = ha->iobase;
	struct scsi_cmnd *cmd = sp->cmd;
	struct cmd_entry *pkt;
	__le32 *dword_ptr;
	int status = 0;
	int cnt;
	int req_cnt;
	int seg_cnt;
	dma_addr_t dma_handle;
	u8 dir;

	ENTER("qla1280_32bit_start_scsi");

	dprintk(1, "32bit_start: cmd=%p sp=%p CDB=%x\n", cmd, sp,
		cmd->cmnd[0]);

	/* Calculate number of entries and segments required. */
	seg_cnt = scsi_dma_map(cmd);
	if (seg_cnt) {
		/*
		 * if greater than four sg entries then we need to allocate
		 * continuation entries
		 */
		if (seg_cnt > 4) {
			req_cnt += (seg_cnt - 4) / 7;
			if ((seg_cnt - 4) % 7)
				req_cnt++;
		}
		dprintk(3, "S/G Transfer cmd=%p seg_cnt=0x%x, req_cnt=%x\n",
			cmd, seg_cnt, req_cnt);
	} else if (seg_cnt < 0) {
		status = 1;
		goto out;
	}

	if ((req_cnt + 2) >= ha->req_q_cnt) {
		/* Calculate number of free request entries. */
		cnt = RD_REG_WORD(&reg->mailbox4);
		if (ha->req_ring_index < cnt)
			ha->req_q_cnt = cnt - ha->req_ring_index;
		else
			ha->req_q_cnt =
				REQUEST_ENTRY_CNT - (ha->req_ring_index - cnt);
	}

	dprintk(3, "Number of free entries=(%d) seg_cnt=0x%x\n",
		ha->req_q_cnt, seg_cnt);
	/* If room for request in request ring. */
	if ((req_cnt + 2) >= ha->req_q_cnt) {
		status = 1;
		dprintk(2, "qla1280_32bit_start_scsi: in-ptr=0x%x, "
			"req_q_cnt=0x%x, req_cnt=0x%x", ha->req_ring_index,
			ha->req_q_cnt, req_cnt);
		goto out;
	}

	/* Check for empty slot in outstanding command list. */
	for (cnt = 0; cnt < MAX_OUTSTANDING_COMMANDS &&
		     (ha->outstanding_cmds[cnt] != 0); cnt++) ;

	if (cnt >= MAX_OUTSTANDING_COMMANDS) {
		status = 1;
		dprintk(2, "qla1280_32bit_start_scsi: NO ROOM IN OUTSTANDING "
			"ARRAY, req_q_cnt=0x%x\n", ha->req_q_cnt);
		goto out;
	}

	CMD_HANDLE(sp->cmd) = (unsigned char *) (unsigned long)(cnt + 1);
	ha->outstanding_cmds[cnt] = sp;
	ha->req_q_cnt -= req_cnt;

	/*
	 * Build command packet.
	 */
	pkt = (struct cmd_entry *) ha->request_ring_ptr;

	pkt->entry_type = COMMAND_TYPE;
	pkt->entry_count = (uint8_t) req_cnt;
	pkt->sys_define = (uint8_t) ha->req_ring_index;
	pkt->entry_status = 0;
	pkt->handle = cpu_to_le32(cnt);

	/* Zero out remaining portion of packet. */
	memset(((char *)pkt + 8), 0, (REQUEST_ENTRY_SIZE - 8));

	/* Set ISP command timeout. */
	pkt->timeout = cpu_to_le16(cmd->timeout_per_command/HZ);

	/* Set device target ID and LUN */
	pkt->lun = SCSI_LUN_32(cmd);
	pkt->target = SCSI_BUS_32(cmd) ?
		(SCSI_TCN_32(cmd) | BIT_7) : SCSI_TCN_32(cmd);

	/* Enable simple tag queuing if device supports it. */
	if (cmd->device->simple_tags)
		pkt->control_flags |= cpu_to_le16(BIT_3);

	/* Load SCSI command packet. */
	pkt->cdb_len = cpu_to_le16(CMD_CDBLEN(cmd));
	memcpy(pkt->scsi_cdb, &(CMD_CDBP(cmd)), CMD_CDBLEN(cmd));

	/*dprintk(1, "Build packet for command[0]=0x%x\n",pkt->scsi_cdb[0]); */
	/* Set transfer direction. */
	dir = qla1280_data_direction(cmd);
	pkt->control_flags |= cpu_to_le16(dir);

	/* Set total data segment count. */
	pkt->dseg_count = cpu_to_le16(seg_cnt);

	/*
	 * Load data segments.
	 */
	if (seg_cnt) {
		struct scatterlist *sg, *s;
		int remseg = seg_cnt;

		sg = scsi_sglist(cmd);

		/* Setup packet address segment pointer. */
		dword_ptr = &pkt->dseg_0_address;

		dprintk(3, "Building S/G data segments..\n");
		qla1280_dump_buffer(1, (char *)sg, 4 * 16);

		/* Load command entry data segments. */
		for_each_sg(sg, s, seg_cnt, cnt) {
			if (cnt == 4)
				break;
			*dword_ptr++ =
				cpu_to_le32(pci_dma_lo32(sg_dma_address(s)));
			*dword_ptr++ = cpu_to_le32(sg_dma_len(s));
			dprintk(3, "S/G Segment phys_addr=0x%lx, len=0x%x\n",
				(pci_dma_lo32(sg_dma_address(s))),
				(sg_dma_len(s)));
			remseg--;
		}
		/*
		 * Build continuation packets.
		 */
		dprintk(3, "S/G Building Continuation"
			"...seg_cnt=0x%x remains\n", seg_cnt);
		while (remseg > 0) {
			/* Continue from end point */
			sg = s;
			/* Adjust ring index. */
			ha->req_ring_index++;
			if (ha->req_ring_index == REQUEST_ENTRY_CNT) {
				ha->req_ring_index = 0;
				ha->request_ring_ptr =
					ha->request_ring;
			} else
				ha->request_ring_ptr++;

			pkt = (struct cmd_entry *)ha->request_ring_ptr;

			/* Zero out packet. */
			memset(pkt, 0, REQUEST_ENTRY_SIZE);

			/* Load packet defaults. */
			((struct cont_entry *) pkt)->
				entry_type = CONTINUE_TYPE;
			((struct cont_entry *) pkt)->entry_count = 1;

			((struct cont_entry *) pkt)->sys_define =
				(uint8_t) ha->req_ring_index;

			/* Setup packet address segment pointer. */
			dword_ptr =
				&((struct cont_entry *) pkt)->dseg_0_address;

			/* Load continuation entry data segments. */
			for_each_sg(sg, s, remseg, cnt) {
				if (cnt == 7)
					break;
				*dword_ptr++ =
					cpu_to_le32(pci_dma_lo32(sg_dma_address(s)));
				*dword_ptr++ =
					cpu_to_le32(sg_dma_len(s));
				dprintk(1,
					"S/G Segment Cont. phys_addr=0x%x, "
					"len=0x%x\n",
					cpu_to_le32(pci_dma_lo32(sg_dma_address(s))),
					cpu_to_le32(sg_dma_len(s)));
			}
			remseg -= cnt;
			dprintk(5, "qla1280_32bit_start_scsi: "
				"continuation packet data - "
				"scsi(%i:%i:%i)\n", SCSI_BUS_32(cmd),
				SCSI_TCN_32(cmd), SCSI_LUN_32(cmd));
			qla1280_dump_buffer(5, (char *)pkt,
					    REQUEST_ENTRY_SIZE);
		}
	} else {	/* No data transfer at all */
		dprintk(5, "qla1280_32bit_start_scsi: No data, command "
			"packet data - \n");
		qla1280_dump_buffer(5, (char *)pkt, REQUEST_ENTRY_SIZE);
	}
	dprintk(5, "qla1280_32bit_start_scsi: First IOCB block:\n");
	qla1280_dump_buffer(5, (char *)ha->request_ring_ptr,
			    REQUEST_ENTRY_SIZE);

	/* Adjust ring index. */
	ha->req_ring_index++;
	if (ha->req_ring_index == REQUEST_ENTRY_CNT) {
		ha->req_ring_index = 0;
		ha->request_ring_ptr = ha->request_ring;
	} else
		ha->request_ring_ptr++;

	/* Set chip new ring index. */
	dprintk(2, "qla1280_32bit_start_scsi: Wakeup RISC "
		"for pending command\n");
	sp->flags |= SRB_SENT;
	ha->actthreads++;
	WRT_REG_WORD(&reg->mailbox4, ha->req_ring_index);
	/* Enforce mmio write ordering; see comment in qla1280_isp_cmd(). */
	mmiowb();

out:
	if (status)
		dprintk(2, "qla1280_32bit_start_scsi: **** FAILED ****\n");

	LEAVE("qla1280_32bit_start_scsi");

	return status;
}
#endif

/*
 * qla1280_req_pkt
 *      Function is responsible for locking ring and
 *      getting a zeroed out request packet.
 *
 * Input:
 *      ha  = adapter block pointer.
 *
 * Returns:
 *      0 = failed to get slot.
 */
static request_t *
qla1280_req_pkt(struct scsi_qla_host *ha)
{
	struct device_reg __iomem *reg = ha->iobase;
	request_t *pkt = NULL;
	int cnt;
	uint32_t timer;

	ENTER("qla1280_req_pkt");

	/*
	 * This can be called from interrupt context, damn it!!!
	 */
	/* Wait for 30 seconds for slot. */
	for (timer = 15000000; timer; timer--) {
		if (ha->req_q_cnt > 0) {
			/* Calculate number of free request entries. */
			cnt = RD_REG_WORD(&reg->mailbox4);
			if (ha->req_ring_index < cnt)
				ha->req_q_cnt = cnt - ha->req_ring_index;
			else
				ha->req_q_cnt =
					REQUEST_ENTRY_CNT - (ha->req_ring_index - cnt);
		}

		/* Found empty request ring slot? */
		if (ha->req_q_cnt > 0) {
			ha->req_q_cnt--;
			pkt = ha->request_ring_ptr;

			/* Zero out packet. */
			memset(pkt, 0, REQUEST_ENTRY_SIZE);

			/*
			 * How can this be right when we have a ring
			 * size of 512???
			 */
			/* Set system defined field. */
			pkt->sys_define = (uint8_t) ha->req_ring_index;

			/* Set entry count. */
			pkt->entry_count = 1;

			break;
		}

		udelay(2);	/* 10 */

		/* Check for pending interrupts. */
		qla1280_poll(ha);
	}

	if (!pkt)
		dprintk(2, "qla1280_req_pkt: **** FAILED ****\n");
	else
		dprintk(3, "qla1280_req_pkt: exiting normally\n");

	return pkt;
}

/*
 * qla1280_isp_cmd
 *      Function is responsible for modifying ISP input pointer.
 *      Releases ring lock.
 *
 * Input:
 *      ha  = adapter block pointer.
 */
static void
qla1280_isp_cmd(struct scsi_qla_host *ha)
{
	struct device_reg __iomem *reg = ha->iobase;

	ENTER("qla1280_isp_cmd");

	dprintk(5, "qla1280_isp_cmd: IOCB data:\n");
	qla1280_dump_buffer(5, (char *)ha->request_ring_ptr,
			    REQUEST_ENTRY_SIZE);

	/* Adjust ring index. */
	ha->req_ring_index++;
	if (ha->req_ring_index == REQUEST_ENTRY_CNT) {
		ha->req_ring_index = 0;
		ha->request_ring_ptr = ha->request_ring;
	} else
		ha->request_ring_ptr++;

	/*
	 * Update request index to mailbox4 (Request Queue In).
	 * The mmiowb() ensures that this write is ordered with writes by other
	 * CPUs.  Without the mmiowb(), it is possible for the following:
	 *    CPUA posts write of index 5 to mailbox4
	 *    CPUA releases host lock
	 *    CPUB acquires host lock
	 *    CPUB posts write of index 6 to mailbox4
	 *    On PCI bus, order reverses and write of 6 posts, then index 5,
	 *       causing chip to issue full queue of stale commands
	 * The mmiowb() prevents future writes from crossing the barrier.
	 * See Documentation/DocBook/deviceiobook.tmpl for more information.
	 */
	WRT_REG_WORD(&reg->mailbox4, ha->req_ring_index);
	mmiowb();

	LEAVE("qla1280_isp_cmd");
}

/****************************************************************************/
/*                        Interrupt Service Routine.                        */
/****************************************************************************/

/****************************************************************************
 *  qla1280_isr
 *      Calls I/O done on command completion.
 *
 * Input:
 *      ha           = adapter block pointer.
 *      done_q       = done queue.
 ****************************************************************************/
static void
qla1280_isr(struct scsi_qla_host *ha, struct list_head *done_q)
{
	struct device_reg __iomem *reg = ha->iobase;
	struct response *pkt;
	struct srb *sp = NULL;
	uint16_t mailbox[MAILBOX_REGISTER_COUNT];
	uint16_t *wptr;
	uint32_t index;
	u16 istatus;

	ENTER("qla1280_isr");

	istatus = RD_REG_WORD(&reg->istatus);
	if (!(istatus & (RISC_INT | PCI_INT)))
		return;

	/* Save mailbox register 5 */
	mailbox[5] = RD_REG_WORD(&reg->mailbox5);

	/* Check for mailbox interrupt. */

	mailbox[0] = RD_REG_WORD_dmasync(&reg->semaphore);

	if (mailbox[0] & BIT_0) {
		/* Get mailbox data. */
		/* dprintk(1, "qla1280_isr: In Get mailbox data \n"); */

		wptr = &mailbox[0];
		*wptr++ = RD_REG_WORD(&reg->mailbox0);
		*wptr++ = RD_REG_WORD(&reg->mailbox1);
		*wptr = RD_REG_WORD(&reg->mailbox2);
		if (mailbox[0] != MBA_SCSI_COMPLETION) {
			wptr++;
			*wptr++ = RD_REG_WORD(&reg->mailbox3);
			*wptr++ = RD_REG_WORD(&reg->mailbox4);
			wptr++;
			*wptr++ = RD_REG_WORD(&reg->mailbox6);
			*wptr = RD_REG_WORD(&reg->mailbox7);
		}

		/* Release mailbox registers. */

		WRT_REG_WORD(&reg->semaphore, 0);
		WRT_REG_WORD(&reg->host_cmd, HC_CLR_RISC_INT);

		dprintk(5, "qla1280_isr: mailbox interrupt mailbox[0] = 0x%x",
			mailbox[0]);

		/* Handle asynchronous event */
		switch (mailbox[0]) {
		case MBA_SCSI_COMPLETION:	/* Response completion */
			dprintk(5, "qla1280_isr: mailbox SCSI response "
				"completion\n");

			if (ha->flags.online) {
				/* Get outstanding command index. */
				index = mailbox[2] << 16 | mailbox[1];

				/* Validate handle. */
				if (index < MAX_OUTSTANDING_COMMANDS)
					sp = ha->outstanding_cmds[index];
				else
					sp = NULL;

				if (sp) {
					/* Free outstanding command slot. */
					ha->outstanding_cmds[index] = NULL;

					/* Save ISP completion status */
					CMD_RESULT(sp->cmd) = 0;

					/* Place block on done queue */
					list_add_tail(&sp->list, done_q);
				} else {
					/*
					 * If we get here we have a real problem!
					 */
					printk(KERN_WARNING
					       "qla1280: ISP invalid handle");
				}
			}
			break;

		case MBA_BUS_RESET:	/* SCSI Bus Reset */
			ha->flags.reset_marker = 1;
			index = mailbox[6] & BIT_0;
			ha->bus_settings[index].reset_marker = 1;

			printk(KERN_DEBUG "qla1280_isr(): index %i "
			       "asynchronous BUS_RESET\n", index);
			break;

		case MBA_SYSTEM_ERR:	/* System Error */
			printk(KERN_WARNING
			       "qla1280: ISP System Error - mbx1=%xh, mbx2="
			       "%xh, mbx3=%xh\n", mailbox[1], mailbox[2],
			       mailbox[3]);
			break;

		case MBA_REQ_TRANSFER_ERR:	/* Request Transfer Error */
			printk(KERN_WARNING
			       "qla1280: ISP Request Transfer Error\n");
			break;

		case MBA_RSP_TRANSFER_ERR:	/* Response Transfer Error */
			printk(KERN_WARNING
			       "qla1280: ISP Response Transfer Error\n");
			break;

		case MBA_WAKEUP_THRES:	/* Request Queue Wake-up */
			dprintk(2, "qla1280_isr: asynchronous WAKEUP_THRES\n");
			break;

		case MBA_TIMEOUT_RESET:	/* Execution Timeout Reset */
			dprintk(2,
				"qla1280_isr: asynchronous TIMEOUT_RESET\n");
			break;

		case MBA_DEVICE_RESET:	/* Bus Device Reset */
			printk(KERN_INFO "qla1280_isr(): asynchronous "
			       "BUS_DEVICE_RESET\n");

			ha->flags.reset_marker = 1;
			index = mailbox[6] & BIT_0;
			ha->bus_settings[index].reset_marker = 1;
			break;

		case MBA_BUS_MODE_CHANGE:
			dprintk(2,
				"qla1280_isr: asynchronous BUS_MODE_CHANGE\n");
			break;

		default:
			/* dprintk(1, "qla1280_isr: default case of switch MB \n"); */
			if (mailbox[0] < MBA_ASYNC_EVENT) {
				wptr = &mailbox[0];
				memcpy((uint16_t *) ha->mailbox_out, wptr,
				       MAILBOX_REGISTER_COUNT *
				       sizeof(uint16_t));

				if(ha->mailbox_wait != NULL)
					complete(ha->mailbox_wait);
			}
			break;
		}
	} else {
		WRT_REG_WORD(&reg->host_cmd, HC_CLR_RISC_INT);
	}

	/*
	 * We will receive interrupts during mailbox testing prior to
	 * the card being marked online, hence the double check.
	 */
	if (!(ha->flags.online && !ha->mailbox_wait)) {
		dprintk(2, "qla1280_isr: Response pointer Error\n");
		goto out;
	}

	if (mailbox[5] >= RESPONSE_ENTRY_CNT)
		goto out;

	while (ha->rsp_ring_index != mailbox[5]) {
		pkt = ha->response_ring_ptr;

		dprintk(5, "qla1280_isr: ha->rsp_ring_index = 0x%x, mailbox[5]"
			" = 0x%x\n", ha->rsp_ring_index, mailbox[5]);
		dprintk(5,"qla1280_isr: response packet data\n");
		qla1280_dump_buffer(5, (char *)pkt, RESPONSE_ENTRY_SIZE);

		if (pkt->entry_type == STATUS_TYPE) {
			if ((le16_to_cpu(pkt->scsi_status) & 0xff)
			    || pkt->comp_status || pkt->entry_status) {
				dprintk(2, "qla1280_isr: ha->rsp_ring_index = "
					"0x%x mailbox[5] = 0x%x, comp_status "
					"= 0x%x, scsi_status = 0x%x\n",
					ha->rsp_ring_index, mailbox[5],
					le16_to_cpu(pkt->comp_status),
					le16_to_cpu(pkt->scsi_status));
			}
		} else {
			dprintk(2, "qla1280_isr: ha->rsp_ring_index = "
				"0x%x, mailbox[5] = 0x%x\n",
				ha->rsp_ring_index, mailbox[5]);
			dprintk(2, "qla1280_isr: response packet data\n");
			qla1280_dump_buffer(2, (char *)pkt,
					    RESPONSE_ENTRY_SIZE);
		}

		if (pkt->entry_type == STATUS_TYPE || pkt->entry_status) {
			dprintk(2, "status: Cmd %p, handle %i\n",
				ha->outstanding_cmds[pkt->handle]->cmd,
				pkt->handle);
			if (pkt->entry_type == STATUS_TYPE)
				qla1280_status_entry(ha, pkt, done_q);
			else
				qla1280_error_entry(ha, pkt, done_q);
			/* Adjust ring index. */
			ha->rsp_ring_index++;
			if (ha->rsp_ring_index == RESPONSE_ENTRY_CNT) {
				ha->rsp_ring_index = 0;
				ha->response_ring_ptr =	ha->response_ring;
			} else
				ha->response_ring_ptr++;
			WRT_REG_WORD(&reg->mailbox5, ha->rsp_ring_index);
		}
	}
	
 out:
	LEAVE("qla1280_isr");
}

/*
 *  qla1280_rst_aen
 *      Processes asynchronous reset.
 *
 * Input:
 *      ha  = adapter block pointer.
 */
static void
qla1280_rst_aen(struct scsi_qla_host *ha)
{
	uint8_t bus;

	ENTER("qla1280_rst_aen");

	if (ha->flags.online && !ha->flags.reset_active &&
	    !ha->flags.abort_isp_active) {
		ha->flags.reset_active = 1;
		while (ha->flags.reset_marker) {
			/* Issue marker command. */
			ha->flags.reset_marker = 0;
			for (bus = 0; bus < ha->ports &&
				     !ha->flags.reset_marker; bus++) {
				if (ha->bus_settings[bus].reset_marker) {
					ha->bus_settings[bus].reset_marker = 0;
					qla1280_marker(ha, bus, 0, 0,
						       MK_SYNC_ALL);
				}
			}
		}
	}

	LEAVE("qla1280_rst_aen");
}


/*
 *  qla1280_status_entry
 *      Processes received ISP status entry.
 *
 * Input:
 *      ha           = adapter block pointer.
 *      pkt          = entry pointer.
 *      done_q       = done queue.
 */
static void
qla1280_status_entry(struct scsi_qla_host *ha, struct response *pkt,
		     struct list_head *done_q)
{
	unsigned int bus, target, lun;
	int sense_sz;
	struct srb *sp;
	struct scsi_cmnd *cmd;
	uint32_t handle = le32_to_cpu(pkt->handle);
	uint16_t scsi_status = le16_to_cpu(pkt->scsi_status);
	uint16_t comp_status = le16_to_cpu(pkt->comp_status);

	ENTER("qla1280_status_entry");

	/* Validate handle. */
	if (handle < MAX_OUTSTANDING_COMMANDS)
		sp = ha->outstanding_cmds[handle];
	else
		sp = NULL;

	if (!sp) {
		printk(KERN_WARNING "qla1280: Status Entry invalid handle\n");
		goto out;
	}

	/* Free outstanding command slot. */
	ha->outstanding_cmds[handle] = NULL;

	cmd = sp->cmd;

	/* Generate LU queue on cntrl, target, LUN */
	bus = SCSI_BUS_32(cmd);
	target = SCSI_TCN_32(cmd);
	lun = SCSI_LUN_32(cmd);

	if (comp_status || scsi_status) {
		dprintk(3, "scsi: comp_status = 0x%x, scsi_status = "
			"0x%x, handle = 0x%x\n", comp_status,
			scsi_status, handle);
	}

	/* Target busy or queue full */
	if ((scsi_status & 0xFF) == SAM_STAT_TASK_SET_FULL ||
	    (scsi_status & 0xFF) == SAM_STAT_BUSY) {
		CMD_RESULT(cmd) = scsi_status & 0xff;
	} else {

		/* Save ISP completion status */
		CMD_RESULT(cmd) = qla1280_return_status(pkt, cmd);

		if (scsi_status & SAM_STAT_CHECK_CONDITION) {
			if (comp_status != CS_ARS_FAILED) {
				uint16_t req_sense_length =
					le16_to_cpu(pkt->req_sense_length);
				if (req_sense_length < CMD_SNSLEN(cmd))
					sense_sz = req_sense_length;
				else
					/*
					 * scsi_cmnd->sense_buffer is
					 * 64 bytes, why only copy 63?
					 * This looks wrong! /Jes
					 */
					sense_sz = CMD_SNSLEN(cmd) - 1;

				memcpy(cmd->sense_buffer,
				       &pkt->req_sense_data, sense_sz);
			} else
				sense_sz = 0;
			memset(cmd->sense_buffer + sense_sz, 0,
			       sizeof(cmd->sense_buffer) - sense_sz);

			dprintk(2, "qla1280_status_entry: Check "
				"condition Sense data, b %i, t %i, "
				"l %i\n", bus, target, lun);
			if (sense_sz)
				qla1280_dump_buffer(2,
						    (char *)cmd->sense_buffer,
						    sense_sz);
		}
	}

	/* Place command on done queue. */
	list_add_tail(&sp->list, done_q);
 out:
	LEAVE("qla1280_status_entry");
}

/*
 *  qla1280_error_entry
 *      Processes error entry.
 *
 * Input:
 *      ha           = adapter block pointer.
 *      pkt          = entry pointer.
 *      done_q       = done queue.
 */
static void
qla1280_error_entry(struct scsi_qla_host *ha, struct response *pkt,
		    struct list_head *done_q)
{
	struct srb *sp;
	uint32_t handle = le32_to_cpu(pkt->handle);

	ENTER("qla1280_error_entry");

	if (pkt->entry_status & BIT_3)
		dprintk(2, "qla1280_error_entry: BAD PAYLOAD flag error\n");
	else if (pkt->entry_status & BIT_2)
		dprintk(2, "qla1280_error_entry: BAD HEADER flag error\n");
	else if (pkt->entry_status & BIT_1)
		dprintk(2, "qla1280_error_entry: FULL flag error\n");
	else
		dprintk(2, "qla1280_error_entry: UNKNOWN flag error\n");

	/* Validate handle. */
	if (handle < MAX_OUTSTANDING_COMMANDS)
		sp = ha->outstanding_cmds[handle];
	else
		sp = NULL;

	if (sp) {
		/* Free outstanding command slot. */
		ha->outstanding_cmds[handle] = NULL;

		/* Bad payload or header */
		if (pkt->entry_status & (BIT_3 + BIT_2)) {
			/* Bad payload or header, set error status. */
			/* CMD_RESULT(sp->cmd) = CS_BAD_PAYLOAD; */
			CMD_RESULT(sp->cmd) = DID_ERROR << 16;
		} else if (pkt->entry_status & BIT_1) {	/* FULL flag */
			CMD_RESULT(sp->cmd) = DID_BUS_BUSY << 16;
		} else {
			/* Set error status. */
			CMD_RESULT(sp->cmd) = DID_ERROR << 16;
		}

		/* Place command on done queue. */
		list_add_tail(&sp->list, done_q);
	}
#ifdef QLA_64BIT_PTR
	else if (pkt->entry_type == COMMAND_A64_TYPE) {
		printk(KERN_WARNING "!qla1280: Error Entry invalid handle");
	}
#endif

	LEAVE("qla1280_error_entry");
}

/*
 *  qla1280_abort_isp
 *      Resets ISP and aborts all outstanding commands.
 *
 * Input:
 *      ha           = adapter block pointer.
 *
 * Returns:
 *      0 = success
 */
static int
qla1280_abort_isp(struct scsi_qla_host *ha)
{
	struct device_reg __iomem *reg = ha->iobase;
	struct srb *sp;
	int status = 0;
	int cnt;
	int bus;

	ENTER("qla1280_abort_isp");

	if (ha->flags.abort_isp_active || !ha->flags.online)
		goto out;
	
	ha->flags.abort_isp_active = 1;

	/* Disable ISP interrupts. */
	qla1280_disable_intrs(ha);
	WRT_REG_WORD(&reg->host_cmd, HC_PAUSE_RISC);
	RD_REG_WORD(&reg->id_l);

	printk(KERN_INFO "scsi(%li): dequeuing outstanding commands\n",
	       ha->host_no);
	/* Dequeue all commands in outstanding command list. */
	for (cnt = 0; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
		struct scsi_cmnd *cmd;
		sp = ha->outstanding_cmds[cnt];
		if (sp) {

			cmd = sp->cmd;
			CMD_RESULT(cmd) = DID_RESET << 16;

			sp->cmd = NULL;
			ha->outstanding_cmds[cnt] = NULL;

			(*cmd->scsi_done)(cmd);

			sp->flags = 0;
		}
	}

	status = qla1280_load_firmware(ha);
	if (status)
		goto out;

	/* Setup adapter based on NVRAM parameters. */
	qla1280_nvram_config (ha);

	status = qla1280_init_rings(ha);
	if (status)
		goto out;
		
	/* Issue SCSI reset. */
	for (bus = 0; bus < ha->ports; bus++)
		qla1280_bus_reset(ha, bus);
		
	ha->flags.abort_isp_active = 0;
 out:
	if (status) {
		printk(KERN_WARNING
		       "qla1280: ISP error recovery failed, board disabled");
		qla1280_reset_adapter(ha);
		dprintk(2, "qla1280_abort_isp: **** FAILED ****\n");
	}

	LEAVE("qla1280_abort_isp");
	return status;
}


/*
 * qla1280_debounce_register
 *      Debounce register.
 *
 * Input:
 *      port = register address.
 *
 * Returns:
 *      register value.
 */
static u16
qla1280_debounce_register(volatile u16 __iomem * addr)
{
	volatile u16 ret;
	volatile u16 ret2;

	ret = RD_REG_WORD(addr);
	ret2 = RD_REG_WORD(addr);

	if (ret == ret2)
		return ret;

	do {
		cpu_relax();
		ret = RD_REG_WORD(addr);
		ret2 = RD_REG_WORD(addr);
	} while (ret != ret2);

	return ret;
}


/************************************************************************
 * qla1280_check_for_dead_scsi_bus                                      *
 *                                                                      *
 *    This routine checks for a dead SCSI bus                           *
 ************************************************************************/
#define SET_SXP_BANK            0x0100
#define SCSI_PHASE_INVALID      0x87FF
static int
qla1280_check_for_dead_scsi_bus(struct scsi_qla_host *ha, unsigned int bus)
{
	uint16_t config_reg, scsi_control;
	struct device_reg __iomem *reg = ha->iobase;

	if (ha->bus_settings[bus].scsi_bus_dead) {
		WRT_REG_WORD(&reg->host_cmd, HC_PAUSE_RISC);
		config_reg = RD_REG_WORD(&reg->cfg_1);
		WRT_REG_WORD(&reg->cfg_1, SET_SXP_BANK);
		scsi_control = RD_REG_WORD(&reg->scsiControlPins);
		WRT_REG_WORD(&reg->cfg_1, config_reg);
		WRT_REG_WORD(&reg->host_cmd, HC_RELEASE_RISC);

		if (scsi_control == SCSI_PHASE_INVALID) {
			ha->bus_settings[bus].scsi_bus_dead = 1;
#if 0
			CMD_RESULT(cp) = DID_NO_CONNECT << 16;
			CMD_HANDLE(cp) = INVALID_HANDLE;
			/* ha->actthreads--; */

			(*(cp)->scsi_done)(cp);
#endif
			return 1;	/* bus is dead */
		} else {
			ha->bus_settings[bus].scsi_bus_dead = 0;
			ha->bus_settings[bus].failed_reset_count = 0;
		}
	}
	return 0;		/* bus is not dead */
}

static void
qla1280_get_target_parameters(struct scsi_qla_host *ha,
			      struct scsi_device *device)
{
	uint16_t mb[MAILBOX_REGISTER_COUNT];
	int bus, target, lun;

	bus = device->channel;
	target = device->id;
	lun = device->lun;


	mb[0] = MBC_GET_TARGET_PARAMETERS;
	mb[1] = (uint16_t) (bus ? target | BIT_7 : target);
	mb[1] <<= 8;
	qla1280_mailbox_command(ha, BIT_6 | BIT_3 | BIT_2 | BIT_1 | BIT_0,
				&mb[0]);

	printk(KERN_INFO "scsi(%li:%d:%d:%d):", ha->host_no, bus, target, lun);

	if (mb[3] != 0) {
		printk(" Sync: period %d, offset %d",
		       (mb[3] & 0xff), (mb[3] >> 8));
		if (mb[2] & BIT_13)
			printk(", Wide");
		if ((mb[2] & BIT_5) && ((mb[6] >> 8) & 0xff) >= 2)
			printk(", DT");
	} else
		printk(" Async");

	if (device->simple_tags)
		printk(", Tagged queuing: depth %d", device->queue_depth);
	printk("\n");
}


#if DEBUG_QLA1280
static void
__qla1280_dump_buffer(char *b, int size)
{
	int cnt;
	u8 c;

	printk(KERN_DEBUG " 0   1   2   3   4   5   6   7   8   9   Ah  "
	       "Bh  Ch  Dh  Eh  Fh\n");
	printk(KERN_DEBUG "---------------------------------------------"
	       "------------------\n");

	for (cnt = 0; cnt < size;) {
		c = *b++;

		printk("0x%02x", c);
		cnt++;
		if (!(cnt % 16))
			printk("\n");
		else
			printk(" ");
	}
	if (cnt % 16)
		printk("\n");
}

/**************************************************************************
 *   ql1280_print_scsi_cmd
 *
 **************************************************************************/
static void
__qla1280_print_scsi_cmd(struct scsi_cmnd *cmd)
{
	struct scsi_qla_host *ha;
	struct Scsi_Host *host = CMD_HOST(cmd);
	struct srb *sp;
	/* struct scatterlist *sg; */

	int i;
	ha = (struct scsi_qla_host *)host->hostdata;

	sp = (struct srb *)CMD_SP(cmd);
	printk("SCSI Command @= 0x%p, Handle=0x%p\n", cmd, CMD_HANDLE(cmd));
	printk("  chan=%d, target = 0x%02x, lun = 0x%02x, cmd_len = 0x%02x\n",
	       SCSI_BUS_32(cmd), SCSI_TCN_32(cmd), SCSI_LUN_32(cmd),
	       CMD_CDBLEN(cmd));
	printk(" CDB = ");
	for (i = 0; i < cmd->cmd_len; i++) {
		printk("0x%02x ", cmd->cmnd[i]);
	}
	printk("  seg_cnt =%d\n", scsi_sg_count(cmd));
	printk("  request buffer=0x%p, request buffer len=0x%x\n",
	       scsi_sglist(cmd), scsi_bufflen(cmd));
	/* if (cmd->use_sg)
	   {
	   sg = (struct scatterlist *) cmd->request_buffer;
	   printk("  SG buffer: \n");
	   qla1280_dump_buffer(1, (char *)sg, (cmd->use_sg*sizeof(struct scatterlist)));
	   } */
	printk("  tag=%d, transfersize=0x%x \n",
	       cmd->tag, cmd->transfersize);
	printk("  Pid=%li, SP=0x%p\n", cmd->serial_number, CMD_SP(cmd));
	printk(" underflow size = 0x%x, direction=0x%x\n",
	       cmd->underflow, cmd->sc_data_direction);
}

/**************************************************************************
 *   ql1280_dump_device
 *
 **************************************************************************/
static void
ql1280_dump_device(struct scsi_qla_host *ha)
{

	struct scsi_cmnd *cp;
	struct srb *sp;
	int i;

	printk(KERN_DEBUG "Outstanding Commands on controller:\n");

	for (i = 0; i < MAX_OUTSTANDING_COMMANDS; i++) {
		if ((sp = ha->outstanding_cmds[i]) == NULL)
			continue;
		if ((cp = sp->cmd) == NULL)
			continue;
		qla1280_print_scsi_cmd(1, cp);
	}
}
#endif


enum tokens {
	TOKEN_NVRAM,
	TOKEN_SYNC,
	TOKEN_WIDE,
	TOKEN_PPR,
	TOKEN_VERBOSE,
	TOKEN_DEBUG,
};

struct setup_tokens {
	char *token;
	int val;
};

static struct setup_tokens setup_token[] __initdata = 
{
	{ "nvram", TOKEN_NVRAM },
	{ "sync", TOKEN_SYNC },
	{ "wide", TOKEN_WIDE },
	{ "ppr", TOKEN_PPR },
	{ "verbose", TOKEN_VERBOSE },
	{ "debug", TOKEN_DEBUG },
};


/**************************************************************************
 *   qla1280_setup
 *
 *   Handle boot parameters. This really needs to be changed so one
 *   can specify per adapter parameters.
 **************************************************************************/
static int __init
qla1280_setup(char *s)
{
	char *cp, *ptr;
	unsigned long val;
	int toke;

	cp = s;

	while (cp && (ptr = strchr(cp, ':'))) {
		ptr++;
		if (!strcmp(ptr, "yes")) {
			val = 0x10000;
			ptr += 3;
		} else if (!strcmp(ptr, "no")) {
 			val = 0;
			ptr += 2;
		} else
			val = simple_strtoul(ptr, &ptr, 0);

		switch ((toke = qla1280_get_token(cp))) {
		case TOKEN_NVRAM:
			if (!val)
				driver_setup.no_nvram = 1;
			break;
		case TOKEN_SYNC:
			if (!val)
				driver_setup.no_sync = 1;
			else if (val != 0x10000)
				driver_setup.sync_mask = val;
			break;
		case TOKEN_WIDE:
			if (!val)
				driver_setup.no_wide = 1;
			else if (val != 0x10000)
				driver_setup.wide_mask = val;
			break;
		case TOKEN_PPR:
			if (!val)
				driver_setup.no_ppr = 1;
			else if (val != 0x10000)
				driver_setup.ppr_mask = val;
			break;
		case TOKEN_VERBOSE:
			qla1280_verbose = val;
			break;
		default:
			printk(KERN_INFO "qla1280: unknown boot option %s\n",
			       cp);
		}

		cp = strchr(ptr, ';');
		if (cp)
			cp++;
		else {
			break;
		}
	}
	return 1;
}


static int __init
qla1280_get_token(char *str)
{
	char *sep;
	long ret = -1;
	int i;

	sep = strchr(str, ':');

	if (sep) {
		for (i = 0; i < ARRAY_SIZE(setup_token); i++) {
			if (!strncmp(setup_token[i].token, str, (sep - str))) {
				ret =  setup_token[i].val;
				break;
			}
		}
	}

	return ret;
}


static struct scsi_host_template qla1280_driver_template = {
	.module			= THIS_MODULE,
	.proc_name		= "qla1280",
	.name			= "Qlogic ISP 1280/12160",
	.info			= qla1280_info,
	.slave_configure	= qla1280_slave_configure,
	.queuecommand		= qla1280_queuecommand,
	.eh_abort_handler	= qla1280_eh_abort,
	.eh_device_reset_handler= qla1280_eh_device_reset,
	.eh_bus_reset_handler	= qla1280_eh_bus_reset,
	.eh_host_reset_handler	= qla1280_eh_adapter_reset,
	.bios_param		= qla1280_biosparam,
	.can_queue		= 0xfffff,
	.this_id		= -1,
	.sg_tablesize		= SG_ALL,
	.cmd_per_lun		= 1,
	.use_clustering		= ENABLE_CLUSTERING,
	.use_sg_chaining	= ENABLE_SG_CHAINING,
};


static int __devinit
qla1280_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
{
	int devnum = id->driver_data;
	struct qla_boards *bdp = &ql1280_board_tbl[devnum];
	struct Scsi_Host *host;
	struct scsi_qla_host *ha;
	int error = -ENODEV;

	/* Bypass all AMI SUBSYS VENDOR IDs */
	if (pdev->subsystem_vendor == PCI_VENDOR_ID_AMI) {
		printk(KERN_INFO
		       "qla1280: Skipping AMI SubSys Vendor ID Chip\n");
		goto error;
	}

	printk(KERN_INFO "qla1280: %s found on PCI bus %i, dev %i\n",
	       bdp->name, pdev->bus->number, PCI_SLOT(pdev->devfn));
	
	if (pci_enable_device(pdev)) {
		printk(KERN_WARNING
		       "qla1280: Failed to enabled pci device, aborting.\n");
		goto error;
	}

	pci_set_master(pdev);

	error = -ENOMEM;
	host = scsi_host_alloc(&qla1280_driver_template, sizeof(*ha));
	if (!host) {
		printk(KERN_WARNING
		       "qla1280: Failed to register host, aborting.\n");
		goto error_disable_device;
	}

	ha = (struct scsi_qla_host *)host->hostdata;
	memset(ha, 0, sizeof(struct scsi_qla_host));

	ha->pdev = pdev;
	ha->devnum = devnum;	/* specifies microcode load address */

#ifdef QLA_64BIT_PTR
	if (pci_set_dma_mask(ha->pdev, DMA_64BIT_MASK)) {
		if (pci_set_dma_mask(ha->pdev, DMA_32BIT_MASK)) {
			printk(KERN_WARNING "scsi(%li): Unable to set a "
			       "suitable DMA mask - aborting\n", ha->host_no);
			error = -ENODEV;
			goto error_put_host;
		}
	} else
		dprintk(2, "scsi(%li): 64 Bit PCI Addressing Enabled\n",
			ha->host_no);
#else
	if (pci_set_dma_mask(ha->pdev, DMA_32BIT_MASK)) {
		printk(KERN_WARNING "scsi(%li): Unable to set a "
		       "suitable DMA mask - aborting\n", ha->host_no);
		error = -ENODEV;
		goto error_put_host;
	}
#endif

	ha->request_ring = pci_alloc_consistent(ha->pdev,
			((REQUEST_ENTRY_CNT + 1) * sizeof(request_t)),
			&ha->request_dma);
	if (!ha->request_ring) {
		printk(KERN_INFO "qla1280: Failed to get request memory\n");
		goto error_put_host;
	}

	ha->response_ring = pci_alloc_consistent(ha->pdev,
			((RESPONSE_ENTRY_CNT + 1) * sizeof(struct response)),
			&ha->response_dma);
	if (!ha->response_ring) {
		printk(KERN_INFO "qla1280: Failed to get response memory\n");
		goto error_free_request_ring;
	}

	ha->ports = bdp->numPorts;

	ha->host = host;
	ha->host_no = host->host_no;

	host->irq = pdev->irq;
	host->max_channel = bdp->numPorts - 1;
	host->max_lun = MAX_LUNS - 1;
	host->max_id = MAX_TARGETS;
	host->max_sectors = 1024;
	host->unique_id = host->host_no;

	error = -ENODEV;

#if MEMORY_MAPPED_IO
	ha->mmpbase = ioremap(pci_resource_start(ha->pdev, 1),
			      pci_resource_len(ha->pdev, 1));
	if (!ha->mmpbase) {
		printk(KERN_INFO "qla1280: Unable to map I/O memory\n");
		goto error_free_response_ring;
	}

	host->base = (unsigned long)ha->mmpbase;
	ha->iobase = (struct device_reg __iomem *)ha->mmpbase;
#else
	host->io_port = pci_resource_start(ha->pdev, 0);
	if (!request_region(host->io_port, 0xff, "qla1280")) {
		printk(KERN_INFO "qla1280: Failed to reserve i/o region "
				 "0x%04lx-0x%04lx - already in use\n",
		       host->io_port, host->io_port + 0xff);
		goto error_free_response_ring;
	}

	ha->iobase = (struct device_reg *)host->io_port;
#endif

	INIT_LIST_HEAD(&ha->done_q);

	/* Disable ISP interrupts. */
	qla1280_disable_intrs(ha);

	if (request_irq(pdev->irq, qla1280_intr_handler, IRQF_SHARED,
				"qla1280", ha)) {
		printk("qla1280 : Failed to reserve interrupt %d already "
		       "in use\n", pdev->irq);
		goto error_release_region;
	}

	/* load the F/W, read paramaters, and init the H/W */
	if (qla1280_initialize_adapter(ha)) {
		printk(KERN_INFO "qla1x160: Failed to initialize adapter\n");
		goto error_free_irq;
	}

	/* set our host ID  (need to do something about our two IDs) */
	host->this_id = ha->bus_settings[0].id;

	pci_set_drvdata(pdev, host);

	error = scsi_add_host(host, &pdev->dev);
	if (error)
		goto error_disable_adapter;
	scsi_scan_host(host);

	return 0;

 error_disable_adapter:
	qla1280_disable_intrs(ha);
 error_free_irq:
	free_irq(pdev->irq, ha);
 error_release_region:
#if MEMORY_MAPPED_IO
	iounmap(ha->mmpbase);
#else
	release_region(host->io_port, 0xff);
#endif
 error_free_response_ring:
	pci_free_consistent(ha->pdev,
			((RESPONSE_ENTRY_CNT + 1) * sizeof(struct response)),
			ha->response_ring, ha->response_dma);
 error_free_request_ring:
	pci_free_consistent(ha->pdev,
			((REQUEST_ENTRY_CNT + 1) * sizeof(request_t)),
			ha->request_ring, ha->request_dma);
 error_put_host:
	scsi_host_put(host);
 error_disable_device:
	pci_disable_device(pdev);
 error:
	return error;
}


static void __devexit
qla1280_remove_one(struct pci_dev *pdev)
{
	struct Scsi_Host *host = pci_get_drvdata(pdev);
	struct scsi_qla_host *ha = (struct scsi_qla_host *)host->hostdata;

	scsi_remove_host(host);

	qla1280_disable_intrs(ha);

	free_irq(pdev->irq, ha);

#if MEMORY_MAPPED_IO
	iounmap(ha->mmpbase);
#else
	release_region(host->io_port, 0xff);
#endif

	pci_free_consistent(ha->pdev,
			((REQUEST_ENTRY_CNT + 1) * (sizeof(request_t))),
			ha->request_ring, ha->request_dma);
	pci_free_consistent(ha->pdev,
			((RESPONSE_ENTRY_CNT + 1) * (sizeof(struct response))),
			ha->response_ring, ha->response_dma);

	pci_disable_device(pdev);

	scsi_host_put(host);
}

static struct pci_driver qla1280_pci_driver = {
	.name		= "qla1280",
	.id_table	= qla1280_pci_tbl,
	.probe		= qla1280_probe_one,
	.remove		= __devexit_p(qla1280_remove_one),
};

static int __init
qla1280_init(void)
{
	if (sizeof(struct srb) > sizeof(struct scsi_pointer)) {
		printk(KERN_WARNING
		       "qla1280: struct srb too big, aborting\n");
		return -EINVAL;
	}

#ifdef MODULE
	/*
	 * If we are called as a module, the qla1280 pointer may not be null
	 * and it would point to our bootup string, just like on the lilo
	 * command line.  IF not NULL, then process this config string with
	 * qla1280_setup
	 *
	 * Boot time Options
	 * To add options at boot time add a line to your lilo.conf file like:
	 * append="qla1280=verbose,max_tags:{{255,255,255,255},{255,255,255,255}}"
	 * which will result in the first four devices on the first two
	 * controllers being set to a tagged queue depth of 32.
	 */
	if (qla1280)
		qla1280_setup(qla1280);
#endif

	return pci_register_driver(&qla1280_pci_driver);
}

static void __exit
qla1280_exit(void)
{
	pci_unregister_driver(&qla1280_pci_driver);
}

module_init(qla1280_init);
module_exit(qla1280_exit);


MODULE_AUTHOR("Qlogic & Jes Sorensen");
MODULE_DESCRIPTION("Qlogic ISP SCSI (qla1x80/qla1x160) driver");
MODULE_LICENSE("GPL");
MODULE_VERSION(QLA1280_VERSION);

/*
 * Overrides for Emacs so that we almost follow Linus's tabbing style.
 * Emacs will notice this stuff at the end of the file and automatically
 * adjust the settings for this buffer only.  This must remain at the end
 * of the file.
 * ---------------------------------------------------------------------------
 * Local variables:
 * c-basic-offset: 8
 * tab-width: 8
 * End:
 */