aboutsummaryrefslogblamecommitdiffstats
path: root/drivers/scsi/gdth.c
blob: 4c698a71f66ff0b54c6dda5c3859f3b96ff04331 (plain) (tree)
1
2
3
4
5
6
7
8
9
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
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
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





                                                                           
                                                                         
                                                                         
                                                                         



















                                                                         
                                                                         

                                                                         




                                                              































































                                                                             
                             








































































































































































































































                                                                               
                                                                        


























































                                                                             
                                               
                              




                                             


















                                               
                         
                 


                                                                                  
                                                         

















































                                                                               

                                                                       



























































































                                                                         

                                             




















































































                                                                              
                                                











                                               













                                                                  
















                                                                   
                                 









                                        




                                                 

                                                    





                                                                              
                                     






                                            

                                                                  





























                                                                              
                                     






























                                                                           

























































































                                                                                 
                                                                




















































































































































































































































































































































































































































































































































































































































































































































































































































































































































                                                                                     
                                        











































































































































































































































































































































































































































































































































































                                                                                       









                                                                               




















































                                                                                











                                                                              













                                                                       
                                           





























































                                                                                
                                                  


















































































































































                                                                                   
                                                                                       




                                                       
                                










                                                                                         







                                                                         
                                         



                                              


























































































































































































































































                                                                                       
                                          































































































































                                                                               
                                                            
                                 
                                                                                








































































                                                                                   
                                          
































































































































































































































































                                                                                 
                                                       



























                                                       
                                                 






























































































                                                                                
                                                          










                                                                              
                                                               































































































































































































































                                                                                      
                                                            
                                   

                                                                       





































































































































































































































































































































































































                                                                                                                                                            
                                    


























                                                                           
                                                      

























































































                                                           
                                               
                                                              


                                                       
































                                                                                   
                                                                                     





























                                                                               
                                                                                  




























































































































                                                                                 
                                                                                  





























































































































                                                                                    
                                                               
















































                                                                           
                                              




                                                                               
                                                                         




                                                                                         
                                                                          
                                                                      
                                                                                


























































                                                                                            
                              





                                                 
                                              





















































































                                                                               
                                                   










                                                 
                                            















































                                                                             
                                                     



                   
                                               
                                                                                                   
     
                                                         




































                                                                         
                                                                      




















                                                            


                                                                      





































































































                                                                              
             















                                                                  




                                                          











                                                          

                    


























































































                                                                              



                                                                                





















                                                                       

                         


                                            
                       



                                                              
                       




                                         















                                                                

                                                                               

         
 


                                                          
               
















                                                   



                                            
                       


                                                              

                       




                                         









                                                

                                                                













                                                      


                                                                






























                                                                 


                                                                









                                                                 


                                                                











                                                                    


                                                                



                                                                    



                                                          
               










































































































































                                                                      
                                               
                                                 

                           

                                     




                                                         
                   































                                                               





                                              














                                                                       

                                                                       

         







                                                                       


                                              
                          
                         
 



                                                                            
                          










                                                              
                                                                   






                           


                     











                                                              
                                                    


                                             






                                                                   
                                                    

                                                  


                                                       
















                                                    
/************************************************************************
 * Linux driver for                                                     *  
 * ICP vortex GmbH:    GDT ISA/EISA/PCI Disk Array Controllers          *
 * Intel Corporation:  Storage RAID Controllers                         *
 *                                                                      *
 * gdth.c                                                               *
 * Copyright (C) 1995-06 ICP vortex GmbH, Achim Leubner                 *
 * Copyright (C) 2002-04 Intel Corporation                              *
 * Copyright (C) 2003-06 Adaptec Inc.                                   *
 * <achim_leubner@adaptec.com>                                          *
 *                                                                      *
 * Additions/Fixes:                                                     *
 * Boji Tony Kannanthanam <boji.t.kannanthanam@intel.com>               *
 * Johannes Dinner <johannes_dinner@adaptec.com>                        *
 *                                                                      *
 * This program is free software; you can redistribute it and/or modify *
 * it under the terms of the GNU General Public License as published    *
 * by the Free Software Foundation; either version 2 of the License,    *
 * or (at your option) any later version.                               *
 *                                                                      *
 * This program is distributed in the hope that it will be useful,      *
 * but WITHOUT ANY WARRANTY; without even the implied warranty of       *
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the         *
 * GNU General Public License for more details.                         *
 *                                                                      *
 * You should have received a copy of the GNU General Public License    *
 * along with this kernel; if not, write to the Free Software           *
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.            *
 *                                                                      *
 * Linux kernel 2.4.x, 2.6.x supported                                  *
 *                                                                      *
 * $Log: gdth.c,v $
 * Revision 1.74  2006/04/10 13:44:47  achim
 * Community changes for 2.6.x
 * Kernel 2.2.x no longer supported
 * scsi_request interface removed, thanks to Christoph Hellwig
 *
 * Revision 1.73  2004/03/31 13:33:03  achim
 * Special command 0xfd implemented to detect 64-bit DMA support
 *
 * Revision 1.72  2004/03/17 08:56:04  achim
 * 64-bit DMA only enabled if FW >= x.43
 *
 * Revision 1.71  2004/03/05 15:51:29  achim
 * Screen service: separate message buffer, bugfixes
 *
 * Revision 1.70  2004/02/27 12:19:07  achim
 * Bugfix: Reset bit in config (0xfe) call removed
 *
 * Revision 1.69  2004/02/20 09:50:24  achim
 * Compatibility changes for kernels < 2.4.20
 * Bugfix screen service command size
 * pci_set_dma_mask() error handling added
 *
 * Revision 1.68  2004/02/19 15:46:54  achim
 * 64-bit DMA bugfixes
 * Drive size bugfix for drives > 1TB
 *
 * Revision 1.67  2004/01/14 13:11:57  achim
 * Tool access over /proc no longer supported
 * Bugfixes IOCTLs
 *
 * Revision 1.66  2003/12/19 15:04:06  achim
 * Bugfixes support for drives > 2TB
 *
 * Revision 1.65  2003/12/15 11:21:56  achim
 * 64-bit DMA support added
 * Support for drives > 2 TB implemented
 * Kernels 2.2.x, 2.4.x, 2.6.x supported
 *
 * Revision 1.64  2003/09/17 08:30:26  achim
 * EISA/ISA controller scan disabled
 * Command line switch probe_eisa_isa added
 *
 * Revision 1.63  2003/07/12 14:01:00  Daniele Bellucci <bellucda@tiscali.it>
 * Minor cleanups in gdth_ioctl.
 *
 * Revision 1.62  2003/02/27 15:01:59  achim
 * Dynamic DMA mapping implemented
 * New (character device) IOCTL interface added
 * Other controller related changes made
 *
 * Revision 1.61  2002/11/08 13:09:52  boji
 * Added support for XSCALE based RAID Controllers
 * Fixed SCREENSERVICE initialization in SMP cases
 * Added checks for gdth_polling before GDTH_HA_LOCK
 *
 * Revision 1.60  2002/02/05 09:35:22  achim
 * MODULE_LICENSE only if kernel >= 2.4.11
 *
 * Revision 1.59  2002/01/30 09:46:33  achim
 * Small changes
 *
 * Revision 1.58  2002/01/29 15:30:02  achim
 * Set default value of shared_access to Y
 * New status S_CACHE_RESERV for clustering added
 *
 * Revision 1.57  2001/08/21 11:16:35  achim
 * Bugfix free_irq()
 *
 * Revision 1.56  2001/08/09 11:19:39  achim
 * Scsi_Host_Template changes
 *
 * Revision 1.55  2001/08/09 10:11:28  achim
 * Command HOST_UNFREEZE_IO before cache service init.
 *
 * Revision 1.54  2001/07/20 13:48:12  achim
 * Expand: gdth_analyse_hdrive() removed
 *
 * Revision 1.53  2001/07/17 09:52:49  achim
 * Small OEM related change
 *
 * Revision 1.52  2001/06/19 15:06:20  achim
 * New host command GDT_UNFREEZE_IO added
 *
 * Revision 1.51  2001/05/22 06:42:37  achim
 * PCI: Subdevice ID added
 *
 * Revision 1.50  2001/05/17 13:42:16  achim
 * Support for Intel Storage RAID Controllers added
 *
 * Revision 1.50  2001/05/17 12:12:34  achim
 * Support for Intel Storage RAID Controllers added
 *
 * Revision 1.49  2001/03/15 15:07:17  achim
 * New __setup interface for boot command line options added
 *
 * Revision 1.48  2001/02/06 12:36:28  achim
 * Bugfix Cluster protocol
 *
 * Revision 1.47  2001/01/10 14:42:06  achim
 * New switch shared_access added
 *
 * Revision 1.46  2001/01/09 08:11:35  achim
 * gdth_command() removed
 * meaning of Scsi_Pointer members changed
 *
 * Revision 1.45  2000/11/16 12:02:24  achim
 * Changes for kernel 2.4
 *
 * Revision 1.44  2000/10/11 08:44:10  achim
 * Clustering changes: New flag media_changed added
 *
 * Revision 1.43  2000/09/20 12:59:01  achim
 * DPMEM remap functions for all PCI controller types implemented
 * Small changes for ia64 platform
 *
 * Revision 1.42  2000/07/20 09:04:50  achim
 * Small changes for kernel 2.4
 *
 * Revision 1.41  2000/07/04 14:11:11  achim
 * gdth_analyse_hdrive() added to rescan drives after online expansion
 *
 * Revision 1.40  2000/06/27 11:24:16  achim
 * Changes Clustering, Screenservice
 *
 * Revision 1.39  2000/06/15 13:09:04  achim
 * Changes for gdth_do_cmd()
 *
 * Revision 1.38  2000/06/15 12:08:43  achim
 * Bugfix gdth_sync_event(), service SCREENSERVICE
 * Data direction for command 0xc2 changed to DOU
 *
 * Revision 1.37  2000/05/25 13:50:10  achim
 * New driver parameter virt_ctr added
 *
 * Revision 1.36  2000/05/04 08:50:46  achim
 * Event buffer now in gdth_ha_str
 *
 * Revision 1.35  2000/03/03 10:44:08  achim
 * New event_string only valid for the RP controller family
 *
 * Revision 1.34  2000/03/02 14:55:29  achim
 * New mechanism for async. event handling implemented
 *
 * Revision 1.33  2000/02/21 15:37:37  achim
 * Bugfix Alpha platform + DPMEM above 4GB
 *
 * Revision 1.32  2000/02/14 16:17:37  achim
 * Bugfix sense_buffer[] + raw devices
 *
 * Revision 1.31  2000/02/10 10:29:00  achim
 * Delete sense_buffer[0], if command OK
 *
 * Revision 1.30  1999/11/02 13:42:39  achim
 * ARRAY_DRV_LIST2 implemented
 * Now 255 log. and 100 host drives supported
 *
 * Revision 1.29  1999/10/05 13:28:47  achim
 * GDT_CLUST_RESET added
 *
 * Revision 1.28  1999/08/12 13:44:54  achim
 * MOUNTALL removed
 * Cluster drives -> removeable drives
 *
 * Revision 1.27  1999/06/22 07:22:38  achim
 * Small changes
 *
 * Revision 1.26  1999/06/10 16:09:12  achim
 * Cluster Host Drive support: Bugfixes
 *
 * Revision 1.25  1999/06/01 16:03:56  achim
 * gdth_init_pci(): Manipulate config. space to start RP controller
 *
 * Revision 1.24  1999/05/26 11:53:06  achim
 * Cluster Host Drive support added
 *
 * Revision 1.23  1999/03/26 09:12:31  achim
 * Default value for hdr_channel set to 0
 *
 * Revision 1.22  1999/03/22 16:27:16  achim
 * Bugfix: gdth_store_event() must not be locked with GDTH_LOCK_HA()
 *
 * Revision 1.21  1999/03/16 13:40:34  achim
 * Problems with reserved drives solved
 * gdth_eh_bus_reset() implemented
 *
 * Revision 1.20  1999/03/10 09:08:13  achim
 * Bugfix: Corrections in gdth_direction_tab[] made
 * Bugfix: Increase command timeout (gdth_update_timeout()) NOT in gdth_putq()
 *
 * Revision 1.19  1999/03/05 14:38:16  achim
 * Bugfix: Heads/Sectors mapping for reserved devices possibly wrong
 * -> gdth_eval_mapping() implemented, changes in gdth_bios_param()
 * INIT_RETRIES set to 100s to avoid DEINIT-Timeout for controllers
 * with BIOS disabled and memory test set to Intensive
 * Enhanced /proc support
 *
 * Revision 1.18  1999/02/24 09:54:33  achim
 * Command line parameter hdr_channel implemented
 * Bugfix for EISA controllers + Linux 2.2.x
 *
 * Revision 1.17  1998/12/17 15:58:11  achim
 * Command line parameters implemented
 * Changes for Alpha platforms
 * PCI controller scan changed
 * SMP support improved (spin_lock_irqsave(),...)
 * New async. events, new scan/reserve commands included
 *
 * Revision 1.16  1998/09/28 16:08:46  achim
 * GDT_PCIMPR: DPMEM remapping, if required
 * mdelay() added
 *
 * Revision 1.15  1998/06/03 14:54:06  achim
 * gdth_delay(), gdth_flush() implemented
 * Bugfix: gdth_release() changed
 *
 * Revision 1.14  1998/05/22 10:01:17  achim
 * mj: pcibios_strerror() removed
 * Improved SMP support (if version >= 2.1.95)
 * gdth_halt(): halt_called flag added (if version < 2.1)
 *
 * Revision 1.13  1998/04/16 09:14:57  achim
 * Reserve drives (for raw service) implemented
 * New error handling code enabled
 * Get controller name from board_info() IOCTL
 * Final round of PCI device driver patches by Martin Mares
 *
 * Revision 1.12  1998/03/03 09:32:37  achim
 * Fibre channel controller support added
 *
 * Revision 1.11  1998/01/27 16:19:14  achim
 * SA_SHIRQ added
 * add_timer()/del_timer() instead of GDTH_TIMER
 * scsi_add_timer()/scsi_del_timer() instead of SCSI_TIMER
 * New error handling included
 *
 * Revision 1.10  1997/10/31 12:29:57  achim
 * Read heads/sectors from host drive
 *
 * Revision 1.9  1997/09/04 10:07:25  achim
 * IO-mapping with virt_to_bus(), gdth_readb(), gdth_writeb(), ...
 * register_reboot_notifier() to get a notify on shutown used
 *
 * Revision 1.8  1997/04/02 12:14:30  achim
 * Version 1.00 (see gdth.h), tested with kernel 2.0.29
 *
 * Revision 1.7  1997/03/12 13:33:37  achim
 * gdth_reset() changed, new async. events
 *
 * Revision 1.6  1997/03/04 14:01:11  achim
 * Shutdown routine gdth_halt() implemented
 *
 * Revision 1.5  1997/02/21 09:08:36  achim
 * New controller included (RP, RP1, RP2 series)
 * IOCTL interface implemented
 *
 * Revision 1.4  1996/07/05 12:48:55  achim
 * Function gdth_bios_param() implemented
 * New constant GDTH_MAXC_P_L inserted
 * GDT_WRITE_THR, GDT_EXT_INFO implemented
 * Function gdth_reset() changed
 *
 * Revision 1.3  1996/05/10 09:04:41  achim
 * Small changes for Linux 1.2.13
 *
 * Revision 1.2  1996/05/09 12:45:27  achim
 * Loadable module support implemented
 * /proc support corrections made
 *
 * Revision 1.1  1996/04/11 07:35:57  achim
 * Initial revision
 *
 ************************************************************************/

/* All GDT Disk Array Controllers are fully supported by this driver.
 * This includes the PCI/EISA/ISA SCSI Disk Array Controllers and the
 * PCI Fibre Channel Disk Array Controllers. See gdth.h for a complete
 * list of all controller types.
 * 
 * If you have one or more GDT3000/3020 EISA controllers with 
 * controller BIOS disabled, you have to set the IRQ values with the 
 * command line option "gdth=irq1,irq2,...", where the irq1,irq2,... are
 * the IRQ values for the EISA controllers.
 * 
 * After the optional list of IRQ values, other possible 
 * command line options are:
 * disable:Y                    disable driver
 * disable:N                    enable driver
 * reserve_mode:0               reserve no drives for the raw service
 * reserve_mode:1               reserve all not init., removable drives
 * reserve_mode:2               reserve all not init. drives
 * reserve_list:h,b,t,l,h,b,t,l,...     reserve particular drive(s) with 
 *                              h- controller no., b- channel no., 
 *                              t- target ID, l- LUN
 * reverse_scan:Y               reverse scan order for PCI controllers         
 * reverse_scan:N               scan PCI controllers like BIOS
 * max_ids:x                    x - target ID count per channel (1..MAXID)
 * rescan:Y                     rescan all channels/IDs 
 * rescan:N                     use all devices found until now
 * virt_ctr:Y                   map every channel to a virtual controller 
 * virt_ctr:N                   use multi channel support 
 * hdr_channel:x                x - number of virtual bus for host drives
 * shared_access:Y              disable driver reserve/release protocol to 
 *                              access a shared resource from several nodes, 
 *                              appropriate controller firmware required
 * shared_access:N              enable driver reserve/release protocol
 * probe_eisa_isa:Y             scan for EISA/ISA controllers
 * probe_eisa_isa:N             do not scan for EISA/ISA controllers
 * force_dma32:Y                use only 32 bit DMA mode
 * force_dma32:N                use 64 bit DMA mode, if supported
 *
 * The default values are: "gdth=disable:N,reserve_mode:1,reverse_scan:N,
 *                          max_ids:127,rescan:N,virt_ctr:N,hdr_channel:0,
 *                          shared_access:Y,probe_eisa_isa:N,force_dma32:N".
 * Here is another example: "gdth=reserve_list:0,1,2,0,0,1,3,0,rescan:Y".
 * 
 * When loading the gdth driver as a module, the same options are available. 
 * You can set the IRQs with "IRQ=...". However, the syntax to specify the
 * options changes slightly. You must replace all ',' between options 
 * with ' ' and all ':' with '=' and you must use 
 * '1' in place of 'Y' and '0' in place of 'N'.
 * 
 * Default: "modprobe gdth disable=0 reserve_mode=1 reverse_scan=0
 *           max_ids=127 rescan=0 virt_ctr=0 hdr_channel=0 shared_access=0 
 *           probe_eisa_isa=0 force_dma32=0"
 * The other example: "modprobe gdth reserve_list=0,1,2,0,0,1,3,0 rescan=1".
 */

/* The meaning of the Scsi_Pointer members in this driver is as follows:
 * ptr:                     Chaining
 * this_residual:           Command priority
 * buffer:                  phys. DMA sense buffer 
 * dma_handle:              phys. DMA buffer (kernel >= 2.4.0)
 * buffers_residual:        Timeout value
 * Status:                  Command status (gdth_do_cmd()), DMA mem. mappings
 * Message:                 Additional info (gdth_do_cmd()), DMA direction
 * have_data_in:            Flag for gdth_wait_completion()
 * sent_command:            Opcode special command
 * phase:                   Service/parameter/return code special command
 */


/* interrupt coalescing */
/* #define INT_COAL */

/* statistics */
#define GDTH_STATISTICS

#include <linux/module.h>

#include <linux/version.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/pci.h>
#include <linux/string.h>
#include <linux/ctype.h>
#include <linux/ioport.h>
#include <linux/delay.h>
#include <linux/sched.h>
#include <linux/interrupt.h>
#include <linux/in.h>
#include <linux/proc_fs.h>
#include <linux/time.h>
#include <linux/timer.h>
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,6)
#include <linux/dma-mapping.h>
#else
#define DMA_32BIT_MASK	0x00000000ffffffffULL
#define DMA_64BIT_MASK	0xffffffffffffffffULL
#endif

#ifdef GDTH_RTC
#include <linux/mc146818rtc.h>
#endif
#include <linux/reboot.h>

#include <asm/dma.h>
#include <asm/system.h>
#include <asm/io.h>
#include <asm/uaccess.h>
#include <linux/spinlock.h>
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
#include <linux/blkdev.h>
#else
#include <linux/blk.h>
#include "sd.h"
#endif

#include "scsi.h"
#include <scsi/scsi_host.h>
#include "gdth_kcompat.h"
#include "gdth.h"

static void gdth_delay(int milliseconds);
static void gdth_eval_mapping(ulong32 size, ulong32 *cyls, int *heads, int *secs);
static irqreturn_t gdth_interrupt(int irq, void *dev_id);
static int gdth_sync_event(int hanum,int service,unchar index,Scsi_Cmnd *scp);
static int gdth_async_event(int hanum);
static void gdth_log_event(gdth_evt_data *dvr, char *buffer);

static void gdth_putq(int hanum,Scsi_Cmnd *scp,unchar priority);
static void gdth_next(int hanum);
static int gdth_fill_raw_cmd(int hanum,Scsi_Cmnd *scp,unchar b);
static int gdth_special_cmd(int hanum,Scsi_Cmnd *scp);
static gdth_evt_str *gdth_store_event(gdth_ha_str *ha, ushort source,
                                      ushort idx, gdth_evt_data *evt);
static int gdth_read_event(gdth_ha_str *ha, int handle, gdth_evt_str *estr);
static void gdth_readapp_event(gdth_ha_str *ha, unchar application, 
                               gdth_evt_str *estr);
static void gdth_clear_events(void);

static void gdth_copy_internal_data(int hanum,Scsi_Cmnd *scp,
                                    char *buffer,ushort count);
static int gdth_internal_cache_cmd(int hanum,Scsi_Cmnd *scp);
static int gdth_fill_cache_cmd(int hanum,Scsi_Cmnd *scp,ushort hdrive);

static int gdth_search_eisa(ushort eisa_adr);
static int gdth_search_isa(ulong32 bios_adr);
static int gdth_search_pci(gdth_pci_str *pcistr);
static void gdth_search_dev(gdth_pci_str *pcistr, ushort *cnt, 
                            ushort vendor, ushort dev);
static void gdth_sort_pci(gdth_pci_str *pcistr, int cnt);
static int gdth_init_eisa(ushort eisa_adr,gdth_ha_str *ha);
static int gdth_init_isa(ulong32 bios_adr,gdth_ha_str *ha);
static int gdth_init_pci(gdth_pci_str *pcistr,gdth_ha_str *ha);

static void gdth_enable_int(int hanum);
static int gdth_get_status(unchar *pIStatus,int irq);
static int gdth_test_busy(int hanum);
static int gdth_get_cmd_index(int hanum);
static void gdth_release_event(int hanum);
static int gdth_wait(int hanum,int index,ulong32 time);
static int gdth_internal_cmd(int hanum,unchar service,ushort opcode,ulong32 p1,
                             ulong64 p2,ulong64 p3);
static int gdth_search_drives(int hanum);
static int gdth_analyse_hdrive(int hanum, ushort hdrive);

static const char *gdth_ctr_name(int hanum);

static int gdth_open(struct inode *inode, struct file *filep);
static int gdth_close(struct inode *inode, struct file *filep);
static int gdth_ioctl(struct inode *inode, struct file *filep,
                      unsigned int cmd, unsigned long arg);

static void gdth_flush(int hanum);
static int gdth_halt(struct notifier_block *nb, ulong event, void *buf);
static int gdth_queuecommand(Scsi_Cmnd *scp,void (*done)(Scsi_Cmnd *));
static void gdth_scsi_done(struct scsi_cmnd *scp);

#ifdef DEBUG_GDTH
static unchar   DebugState = DEBUG_GDTH;

#ifdef __SERIAL__
#define MAX_SERBUF 160
static void ser_init(void);
static void ser_puts(char *str);
static void ser_putc(char c);
static int  ser_printk(const char *fmt, ...);
static char strbuf[MAX_SERBUF+1];
#ifdef __COM2__
#define COM_BASE 0x2f8
#else
#define COM_BASE 0x3f8
#endif
static void ser_init()
{
    unsigned port=COM_BASE;

    outb(0x80,port+3);
    outb(0,port+1);
    /* 19200 Baud, if 9600: outb(12,port) */
    outb(6, port);
    outb(3,port+3);
    outb(0,port+1);
    /*
    ser_putc('I');
    ser_putc(' ');
    */
}

static void ser_puts(char *str)
{
    char *ptr;

    ser_init();
    for (ptr=str;*ptr;++ptr)
        ser_putc(*ptr);
}

static void ser_putc(char c)
{
    unsigned port=COM_BASE;

    while ((inb(port+5) & 0x20)==0);
    outb(c,port);
    if (c==0x0a)
    {
        while ((inb(port+5) & 0x20)==0);
        outb(0x0d,port);
    }
}

static int ser_printk(const char *fmt, ...)
{
    va_list args;
    int i;

    va_start(args,fmt);
    i = vsprintf(strbuf,fmt,args);
    ser_puts(strbuf);
    va_end(args);
    return i;
}

#define TRACE(a)    {if (DebugState==1) {ser_printk a;}}
#define TRACE2(a)   {if (DebugState==1 || DebugState==2) {ser_printk a;}}
#define TRACE3(a)   {if (DebugState!=0) {ser_printk a;}}

#else /* !__SERIAL__ */
#define TRACE(a)    {if (DebugState==1) {printk a;}}
#define TRACE2(a)   {if (DebugState==1 || DebugState==2) {printk a;}}
#define TRACE3(a)   {if (DebugState!=0) {printk a;}}
#endif

#else /* !DEBUG */
#define TRACE(a)
#define TRACE2(a)
#define TRACE3(a)
#endif

#ifdef GDTH_STATISTICS
static ulong32 max_rq=0, max_index=0, max_sg=0;
#ifdef INT_COAL
static ulong32 max_int_coal=0;
#endif
static ulong32 act_ints=0, act_ios=0, act_stats=0, act_rq=0;
static struct timer_list gdth_timer;
#endif

#define PTR2USHORT(a)   (ushort)(ulong)(a)
#define GDTOFFSOF(a,b)  (size_t)&(((a*)0)->b)
#define INDEX_OK(i,t)   ((i)<ARRAY_SIZE(t))

#define NUMDATA(a)      ( (gdth_num_str  *)((a)->hostdata))
#define HADATA(a)       (&((gdth_ext_str *)((a)->hostdata))->haext)
#define CMDDATA(a)      (&((gdth_ext_str *)((a)->hostdata))->cmdext)

#define BUS_L2P(a,b)    ((b)>(a)->virt_bus ? (b-1):(b))

#define gdth_readb(addr)        readb(addr)
#define gdth_readw(addr)        readw(addr)
#define gdth_readl(addr)        readl(addr)
#define gdth_writeb(b,addr)     writeb((b),(addr))
#define gdth_writew(b,addr)     writew((b),(addr))
#define gdth_writel(b,addr)     writel((b),(addr))

static unchar   gdth_drq_tab[4] = {5,6,7,7};            /* DRQ table */
static unchar   gdth_irq_tab[6] = {0,10,11,12,14,0};    /* IRQ table */
static unchar   gdth_polling;                           /* polling if TRUE */
static unchar   gdth_from_wait  = FALSE;                /* gdth_wait() */
static int      wait_index,wait_hanum;                  /* gdth_wait() */
static int      gdth_ctr_count  = 0;                    /* controller count */
static int      gdth_ctr_vcount = 0;                    /* virt. ctr. count */
static int      gdth_ctr_released = 0;                  /* gdth_release() */
static struct Scsi_Host *gdth_ctr_tab[MAXHA];           /* controller table */
static struct Scsi_Host *gdth_ctr_vtab[MAXHA*MAXBUS];   /* virt. ctr. table */
static unchar   gdth_write_through = FALSE;             /* write through */
static gdth_evt_str ebuffer[MAX_EVENTS];                /* event buffer */
static int elastidx;
static int eoldidx;
static int major;

#define DIN     1                               /* IN data direction */
#define DOU     2                               /* OUT data direction */
#define DNO     DIN                             /* no data transfer */
#define DUN     DIN                             /* unknown data direction */
static unchar gdth_direction_tab[0x100] = {
    DNO,DNO,DIN,DIN,DOU,DIN,DIN,DOU,DIN,DUN,DOU,DOU,DUN,DUN,DUN,DIN,
    DNO,DIN,DIN,DOU,DIN,DOU,DNO,DNO,DOU,DNO,DIN,DNO,DIN,DOU,DNO,DUN,
    DIN,DUN,DIN,DUN,DOU,DIN,DUN,DUN,DIN,DIN,DOU,DNO,DUN,DIN,DOU,DOU,
    DOU,DOU,DOU,DNO,DIN,DNO,DNO,DIN,DOU,DOU,DOU,DOU,DIN,DOU,DIN,DOU,
    DOU,DOU,DIN,DIN,DIN,DNO,DUN,DNO,DNO,DNO,DUN,DNO,DOU,DIN,DUN,DUN,
    DUN,DUN,DUN,DUN,DUN,DOU,DUN,DUN,DUN,DUN,DIN,DUN,DUN,DUN,DUN,DUN,
    DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
    DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
    DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DIN,DUN,DOU,DUN,DUN,DUN,DUN,DUN,
    DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DIN,DUN,
    DUN,DUN,DUN,DUN,DUN,DNO,DNO,DUN,DIN,DNO,DOU,DUN,DNO,DUN,DOU,DOU,
    DOU,DOU,DOU,DNO,DUN,DIN,DOU,DIN,DIN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
    DUN,DUN,DOU,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
    DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
    DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DOU,DUN,DUN,DUN,DUN,DUN,
    DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN
};

/* LILO and modprobe/insmod parameters */
/* IRQ list for GDT3000/3020 EISA controllers */
static int irq[MAXHA] __initdata = 
{0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff};
/* disable driver flag */
static int disable __initdata = 0;
/* reserve flag */
static int reserve_mode = 1;                  
/* reserve list */
static int reserve_list[MAX_RES_ARGS] = 
{0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff};
/* scan order for PCI controllers */
static int reverse_scan = 0;
/* virtual channel for the host drives */
static int hdr_channel = 0;
/* max. IDs per channel */
static int max_ids = MAXID;
/* rescan all IDs */
static int rescan = 0;
/* map channels to virtual controllers */
static int virt_ctr = 0;
/* shared access */
static int shared_access = 1;
/* enable support for EISA and ISA controllers */
static int probe_eisa_isa = 0;
/* 64 bit DMA mode, support for drives > 2 TB, if force_dma32 = 0 */
static int force_dma32 = 0;

/* parameters for modprobe/insmod */
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,11)
module_param_array(irq, int, NULL, 0);
module_param(disable, int, 0);
module_param(reserve_mode, int, 0);
module_param_array(reserve_list, int, NULL, 0);
module_param(reverse_scan, int, 0);
module_param(hdr_channel, int, 0);
module_param(max_ids, int, 0);
module_param(rescan, int, 0);
module_param(virt_ctr, int, 0);
module_param(shared_access, int, 0);
module_param(probe_eisa_isa, int, 0);
module_param(force_dma32, int, 0);
#else
MODULE_PARM(irq, "i");
MODULE_PARM(disable, "i");
MODULE_PARM(reserve_mode, "i");
MODULE_PARM(reserve_list, "4-" __MODULE_STRING(MAX_RES_ARGS) "i");
MODULE_PARM(reverse_scan, "i");
MODULE_PARM(hdr_channel, "i");
MODULE_PARM(max_ids, "i");
MODULE_PARM(rescan, "i");
MODULE_PARM(virt_ctr, "i");
MODULE_PARM(shared_access, "i");
MODULE_PARM(probe_eisa_isa, "i");
MODULE_PARM(force_dma32, "i");
#endif
MODULE_AUTHOR("Achim Leubner");
MODULE_LICENSE("GPL");

/* ioctl interface */
static struct file_operations gdth_fops = {
    .ioctl   = gdth_ioctl,
    .open    = gdth_open,
    .release = gdth_close,
};

#include "gdth_proc.h"
#include "gdth_proc.c"

/* notifier block to get a notify on system shutdown/halt/reboot */
static struct notifier_block gdth_notifier = {
    gdth_halt, NULL, 0
};
static int notifier_disabled = 0;

static void gdth_delay(int milliseconds)
{
    if (milliseconds == 0) {
        udelay(1);
    } else {
        mdelay(milliseconds);
    }
}

#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
static void gdth_scsi_done(struct scsi_cmnd *scp)
{
    TRACE2(("gdth_scsi_done()\n"));

    if (scp->request)
        complete((struct completion *)scp->request);
}

int __gdth_execute(struct scsi_device *sdev, gdth_cmd_str *gdtcmd, char *cmnd,
                   int timeout, u32 *info)
{
    Scsi_Cmnd *scp;
    DECLARE_COMPLETION_ONSTACK(wait);
    int rval;

    scp = kmalloc(sizeof(*scp), GFP_KERNEL);
    if (!scp)
        return -ENOMEM;
    memset(scp, 0, sizeof(*scp));
    scp->device = sdev;
    /* use request field to save the ptr. to completion struct. */
    scp->request = (struct request *)&wait;
    scp->timeout_per_command = timeout*HZ;
    scp->request_buffer = gdtcmd;
    scp->cmd_len = 12;
    memcpy(scp->cmnd, cmnd, 12);
    scp->SCp.this_residual = IOCTL_PRI;   /* priority */
    scp->done = gdth_scsi_done; /* some fn. test this */
    gdth_queuecommand(scp, gdth_scsi_done);
    wait_for_completion(&wait);

    rval = scp->SCp.Status;
    if (info)
        *info = scp->SCp.Message;
    kfree(scp);
    return rval;
}
#else
static void gdth_scsi_done(Scsi_Cmnd *scp)
{
    TRACE2(("gdth_scsi_done()\n"));

    scp->request.rq_status = RQ_SCSI_DONE;
    if (scp->request.waiting)
        complete(scp->request.waiting);
}

int __gdth_execute(struct scsi_device *sdev, gdth_cmd_str *gdtcmd, char *cmnd,
                   int timeout, u32 *info)
{
    Scsi_Cmnd *scp = scsi_allocate_device(sdev, 1, FALSE);
    unsigned bufflen = gdtcmd ? sizeof(gdth_cmd_str) : 0;
    DECLARE_COMPLETION_ONSTACK(wait);
    int rval;

    if (!scp)
        return -ENOMEM;
    scp->cmd_len = 12;
    scp->use_sg = 0;
    scp->SCp.this_residual = IOCTL_PRI;   /* priority */
    scp->request.rq_status = RQ_SCSI_BUSY;
    scp->request.waiting = &wait;
    scsi_do_cmd(scp, cmnd, gdtcmd, bufflen, gdth_scsi_done, timeout*HZ, 1);
    wait_for_completion(&wait);

    rval = scp->SCp.Status;
    if (info)
        *info = scp->SCp.Message;

    scsi_release_command(scp);
    return rval;
}
#endif

int gdth_execute(struct Scsi_Host *shost, gdth_cmd_str *gdtcmd, char *cmnd,
                 int timeout, u32 *info)
{
    struct scsi_device *sdev = scsi_get_host_dev(shost);
    int rval = __gdth_execute(sdev, gdtcmd, cmnd, timeout, info);

    scsi_free_host_dev(sdev);
    return rval;
}

static void gdth_eval_mapping(ulong32 size, ulong32 *cyls, int *heads, int *secs)
{
    *cyls = size /HEADS/SECS;
    if (*cyls <= MAXCYLS) {
        *heads = HEADS;
        *secs = SECS;
    } else {                                        /* too high for 64*32 */
        *cyls = size /MEDHEADS/MEDSECS;
        if (*cyls <= MAXCYLS) {
            *heads = MEDHEADS;
            *secs = MEDSECS;
        } else {                                    /* too high for 127*63 */
            *cyls = size /BIGHEADS/BIGSECS;
            *heads = BIGHEADS;
            *secs = BIGSECS;
        }
    }
}

/* controller search and initialization functions */

static int __init gdth_search_eisa(ushort eisa_adr)
{
    ulong32 id;
    
    TRACE(("gdth_search_eisa() adr. %x\n",eisa_adr));
    id = inl(eisa_adr+ID0REG);
    if (id == GDT3A_ID || id == GDT3B_ID) {     /* GDT3000A or GDT3000B */
        if ((inb(eisa_adr+EISAREG) & 8) == 0)   
            return 0;                           /* not EISA configured */
        return 1;
    }
    if (id == GDT3_ID)                          /* GDT3000 */
        return 1;

    return 0;                                   
}


static int __init gdth_search_isa(ulong32 bios_adr)
{
    void __iomem *addr;
    ulong32 id;

    TRACE(("gdth_search_isa() bios adr. %x\n",bios_adr));
    if ((addr = ioremap(bios_adr+BIOS_ID_OFFS, sizeof(ulong32))) != NULL) {
        id = gdth_readl(addr);
        iounmap(addr);
        if (id == GDT2_ID)                          /* GDT2000 */
            return 1;
    }
    return 0;
}


static int __init gdth_search_pci(gdth_pci_str *pcistr)
{
    ushort device, cnt;
    
    TRACE(("gdth_search_pci()\n"));

    cnt = 0;
    for (device = 0; device <= PCI_DEVICE_ID_VORTEX_GDT6555; ++device)
        gdth_search_dev(pcistr, &cnt, PCI_VENDOR_ID_VORTEX, device);
    for (device = PCI_DEVICE_ID_VORTEX_GDT6x17RP; 
         device <= PCI_DEVICE_ID_VORTEX_GDTMAXRP; ++device)
        gdth_search_dev(pcistr, &cnt, PCI_VENDOR_ID_VORTEX, device);
    gdth_search_dev(pcistr, &cnt, PCI_VENDOR_ID_VORTEX, 
                    PCI_DEVICE_ID_VORTEX_GDTNEWRX);
    gdth_search_dev(pcistr, &cnt, PCI_VENDOR_ID_VORTEX, 
                    PCI_DEVICE_ID_VORTEX_GDTNEWRX2);
    gdth_search_dev(pcistr, &cnt, PCI_VENDOR_ID_INTEL,
                    PCI_DEVICE_ID_INTEL_SRC);
    gdth_search_dev(pcistr, &cnt, PCI_VENDOR_ID_INTEL,
                    PCI_DEVICE_ID_INTEL_SRC_XSCALE);
    return cnt;
}

/* Vortex only makes RAID controllers.
 * We do not really want to specify all 550 ids here, so wildcard match.
 */
static struct pci_device_id gdthtable[] __attribute_used__ = {
    {PCI_VENDOR_ID_VORTEX,PCI_ANY_ID,PCI_ANY_ID, PCI_ANY_ID},
    {PCI_VENDOR_ID_INTEL,PCI_DEVICE_ID_INTEL_SRC,PCI_ANY_ID,PCI_ANY_ID}, 
    {PCI_VENDOR_ID_INTEL,PCI_DEVICE_ID_INTEL_SRC_XSCALE,PCI_ANY_ID,PCI_ANY_ID}, 
    {0}
};
MODULE_DEVICE_TABLE(pci,gdthtable);

static void __init gdth_search_dev(gdth_pci_str *pcistr, ushort *cnt,
                                   ushort vendor, ushort device)
{
    ulong base0, base1, base2;
    struct pci_dev *pdev;
    
    TRACE(("gdth_search_dev() cnt %d vendor %x device %x\n",
          *cnt, vendor, device));

    pdev = NULL;
    while ((pdev = pci_find_device(vendor, device, pdev)) 
           != NULL) {
        if (pci_enable_device(pdev))
            continue;
        if (*cnt >= MAXHA)
            return;
        /* GDT PCI controller found, resources are already in pdev */
        pcistr[*cnt].pdev = pdev;
        pcistr[*cnt].vendor_id = vendor;
        pcistr[*cnt].device_id = device;
        pcistr[*cnt].subdevice_id = pdev->subsystem_device;
        pcistr[*cnt].bus = pdev->bus->number;
        pcistr[*cnt].device_fn = pdev->devfn;
        pcistr[*cnt].irq = pdev->irq;
        base0 = pci_resource_flags(pdev, 0);
        base1 = pci_resource_flags(pdev, 1);
        base2 = pci_resource_flags(pdev, 2);
        if (device <= PCI_DEVICE_ID_VORTEX_GDT6000B ||   /* GDT6000/B */
            device >= PCI_DEVICE_ID_VORTEX_GDT6x17RP) {  /* MPR */
            if (!(base0 & IORESOURCE_MEM)) 
                continue;
            pcistr[*cnt].dpmem = pci_resource_start(pdev, 0);
        } else {                                  /* GDT6110, GDT6120, .. */
            if (!(base0 & IORESOURCE_MEM) ||
                !(base2 & IORESOURCE_MEM) ||
                !(base1 & IORESOURCE_IO)) 
                continue;
            pcistr[*cnt].dpmem = pci_resource_start(pdev, 2);
            pcistr[*cnt].io_mm = pci_resource_start(pdev, 0);
            pcistr[*cnt].io    = pci_resource_start(pdev, 1);
        }
        TRACE2(("Controller found at %d/%d, irq %d, dpmem 0x%lx\n",
                pcistr[*cnt].bus, PCI_SLOT(pcistr[*cnt].device_fn), 
                pcistr[*cnt].irq, pcistr[*cnt].dpmem));
        (*cnt)++;
    }       
}   


static void __init gdth_sort_pci(gdth_pci_str *pcistr, int cnt)
{    
    gdth_pci_str temp;
    int i, changed;
    
    TRACE(("gdth_sort_pci() cnt %d\n",cnt));
    if (cnt == 0)
        return;

    do {
        changed = FALSE;
        for (i = 0; i < cnt-1; ++i) {
            if (!reverse_scan) {
                if ((pcistr[i].bus > pcistr[i+1].bus) ||
                    (pcistr[i].bus == pcistr[i+1].bus &&
                     PCI_SLOT(pcistr[i].device_fn) > 
                     PCI_SLOT(pcistr[i+1].device_fn))) {
                    temp = pcistr[i];
                    pcistr[i] = pcistr[i+1];
                    pcistr[i+1] = temp;
                    changed = TRUE;
                }
            } else {
                if ((pcistr[i].bus < pcistr[i+1].bus) ||
                    (pcistr[i].bus == pcistr[i+1].bus &&
                     PCI_SLOT(pcistr[i].device_fn) < 
                     PCI_SLOT(pcistr[i+1].device_fn))) {
                    temp = pcistr[i];
                    pcistr[i] = pcistr[i+1];
                    pcistr[i+1] = temp;
                    changed = TRUE;
                }
            }
        }
    } while (changed);
}


static int __init gdth_init_eisa(ushort eisa_adr,gdth_ha_str *ha)
{
    ulong32 retries,id;
    unchar prot_ver,eisacf,i,irq_found;

    TRACE(("gdth_init_eisa() adr. %x\n",eisa_adr));
    
    /* disable board interrupts, deinitialize services */
    outb(0xff,eisa_adr+EDOORREG);
    outb(0x00,eisa_adr+EDENABREG);
    outb(0x00,eisa_adr+EINTENABREG);
    
    outb(0xff,eisa_adr+LDOORREG);
    retries = INIT_RETRIES;
    gdth_delay(20);
    while (inb(eisa_adr+EDOORREG) != 0xff) {
        if (--retries == 0) {
            printk("GDT-EISA: Initialization error (DEINIT failed)\n");
            return 0;
        }
        gdth_delay(1);
        TRACE2(("wait for DEINIT: retries=%d\n",retries));
    }
    prot_ver = inb(eisa_adr+MAILBOXREG);
    outb(0xff,eisa_adr+EDOORREG);
    if (prot_ver != PROTOCOL_VERSION) {
        printk("GDT-EISA: Illegal protocol version\n");
        return 0;
    }
    ha->bmic = eisa_adr;
    ha->brd_phys = (ulong32)eisa_adr >> 12;

    outl(0,eisa_adr+MAILBOXREG);
    outl(0,eisa_adr+MAILBOXREG+4);
    outl(0,eisa_adr+MAILBOXREG+8);
    outl(0,eisa_adr+MAILBOXREG+12);

    /* detect IRQ */ 
    if ((id = inl(eisa_adr+ID0REG)) == GDT3_ID) {
        ha->oem_id = OEM_ID_ICP;
        ha->type = GDT_EISA;
        ha->stype = id;
        outl(1,eisa_adr+MAILBOXREG+8);
        outb(0xfe,eisa_adr+LDOORREG);
        retries = INIT_RETRIES;
        gdth_delay(20);
        while (inb(eisa_adr+EDOORREG) != 0xfe) {
            if (--retries == 0) {
                printk("GDT-EISA: Initialization error (get IRQ failed)\n");
                return 0;
            }
            gdth_delay(1);
        }
        ha->irq = inb(eisa_adr+MAILBOXREG);
        outb(0xff,eisa_adr+EDOORREG);
        TRACE2(("GDT3000/3020: IRQ=%d\n",ha->irq));
        /* check the result */
        if (ha->irq == 0) {
                TRACE2(("Unknown IRQ, use IRQ table from cmd line !\n"));
                for (i = 0, irq_found = FALSE; 
                     i < MAXHA && irq[i] != 0xff; ++i) {
                if (irq[i]==10 || irq[i]==11 || irq[i]==12 || irq[i]==14) {
                    irq_found = TRUE;
                    break;
                }
                }
            if (irq_found) {
                ha->irq = irq[i];
                irq[i] = 0;
                printk("GDT-EISA: Can not detect controller IRQ,\n");
                printk("Use IRQ setting from command line (IRQ = %d)\n",
                       ha->irq);
            } else {
                printk("GDT-EISA: Initialization error (unknown IRQ), Enable\n");
                printk("the controller BIOS or use command line parameters\n");
                return 0;
            }
        }
    } else {
        eisacf = inb(eisa_adr+EISAREG) & 7;
        if (eisacf > 4)                         /* level triggered */
            eisacf -= 4;
        ha->irq = gdth_irq_tab[eisacf];
        ha->oem_id = OEM_ID_ICP;
        ha->type = GDT_EISA;
        ha->stype = id;
    }

    ha->dma64_support = 0;
    return 1;
}

       
static int __init gdth_init_isa(ulong32 bios_adr,gdth_ha_str *ha)
{
    register gdt2_dpram_str __iomem *dp2_ptr;
    int i;
    unchar irq_drq,prot_ver;
    ulong32 retries;

    TRACE(("gdth_init_isa() bios adr. %x\n",bios_adr));

    ha->brd = ioremap(bios_adr, sizeof(gdt2_dpram_str));
    if (ha->brd == NULL) {
        printk("GDT-ISA: Initialization error (DPMEM remap error)\n");
        return 0;
    }
    dp2_ptr = ha->brd;
    gdth_writeb(1, &dp2_ptr->io.memlock); /* switch off write protection */
    /* reset interface area */
    memset_io(&dp2_ptr->u, 0, sizeof(dp2_ptr->u));
    if (gdth_readl(&dp2_ptr->u) != 0) {
        printk("GDT-ISA: Initialization error (DPMEM write error)\n");
        iounmap(ha->brd);
        return 0;
    }

    /* disable board interrupts, read DRQ and IRQ */
    gdth_writeb(0xff, &dp2_ptr->io.irqdel);
    gdth_writeb(0x00, &dp2_ptr->io.irqen);
    gdth_writeb(0x00, &dp2_ptr->u.ic.S_Status);
    gdth_writeb(0x00, &dp2_ptr->u.ic.Cmd_Index);

    irq_drq = gdth_readb(&dp2_ptr->io.rq);
    for (i=0; i<3; ++i) {
        if ((irq_drq & 1)==0)
            break;
        irq_drq >>= 1;
    }
    ha->drq = gdth_drq_tab[i];

    irq_drq = gdth_readb(&dp2_ptr->io.rq) >> 3;
    for (i=1; i<5; ++i) {
        if ((irq_drq & 1)==0)
            break;
        irq_drq >>= 1;
    }
    ha->irq = gdth_irq_tab[i];

    /* deinitialize services */
    gdth_writel(bios_adr, &dp2_ptr->u.ic.S_Info[0]);
    gdth_writeb(0xff, &dp2_ptr->u.ic.S_Cmd_Indx);
    gdth_writeb(0, &dp2_ptr->io.event);
    retries = INIT_RETRIES;
    gdth_delay(20);
    while (gdth_readb(&dp2_ptr->u.ic.S_Status) != 0xff) {
        if (--retries == 0) {
            printk("GDT-ISA: Initialization error (DEINIT failed)\n");
            iounmap(ha->brd);
            return 0;
        }
        gdth_delay(1);
    }
    prot_ver = (unchar)gdth_readl(&dp2_ptr->u.ic.S_Info[0]);
    gdth_writeb(0, &dp2_ptr->u.ic.Status);
    gdth_writeb(0xff, &dp2_ptr->io.irqdel);
    if (prot_ver != PROTOCOL_VERSION) {
        printk("GDT-ISA: Illegal protocol version\n");
        iounmap(ha->brd);
        return 0;
    }

    ha->oem_id = OEM_ID_ICP;
    ha->type = GDT_ISA;
    ha->ic_all_size = sizeof(dp2_ptr->u);
    ha->stype= GDT2_ID;
    ha->brd_phys = bios_adr >> 4;

    /* special request to controller BIOS */
    gdth_writel(0x00, &dp2_ptr->u.ic.S_Info[0]);
    gdth_writel(0x00, &dp2_ptr->u.ic.S_Info[1]);
    gdth_writel(0x01, &dp2_ptr->u.ic.S_Info[2]);
    gdth_writel(0x00, &dp2_ptr->u.ic.S_Info[3]);
    gdth_writeb(0xfe, &dp2_ptr->u.ic.S_Cmd_Indx);
    gdth_writeb(0, &dp2_ptr->io.event);
    retries = INIT_RETRIES;
    gdth_delay(20);
    while (gdth_readb(&dp2_ptr->u.ic.S_Status) != 0xfe) {
        if (--retries == 0) {
            printk("GDT-ISA: Initialization error\n");
            iounmap(ha->brd);
            return 0;
        }
        gdth_delay(1);
    }
    gdth_writeb(0, &dp2_ptr->u.ic.Status);
    gdth_writeb(0xff, &dp2_ptr->io.irqdel);

    ha->dma64_support = 0;
    return 1;
}


static int __init gdth_init_pci(gdth_pci_str *pcistr,gdth_ha_str *ha)
{
    register gdt6_dpram_str __iomem *dp6_ptr;
    register gdt6c_dpram_str __iomem *dp6c_ptr;
    register gdt6m_dpram_str __iomem *dp6m_ptr;
    ulong32 retries;
    unchar prot_ver;
    ushort command;
    int i, found = FALSE;

    TRACE(("gdth_init_pci()\n"));

    if (pcistr->vendor_id == PCI_VENDOR_ID_INTEL)
        ha->oem_id = OEM_ID_INTEL;
    else
        ha->oem_id = OEM_ID_ICP;
    ha->brd_phys = (pcistr->bus << 8) | (pcistr->device_fn & 0xf8);
    ha->stype = (ulong32)pcistr->device_id;
    ha->subdevice_id = pcistr->subdevice_id;
    ha->irq = pcistr->irq;
    ha->pdev = pcistr->pdev;
    
    if (ha->stype <= PCI_DEVICE_ID_VORTEX_GDT6000B) {  /* GDT6000/B */
        TRACE2(("init_pci() dpmem %lx irq %d\n",pcistr->dpmem,ha->irq));
        ha->brd = ioremap(pcistr->dpmem, sizeof(gdt6_dpram_str));
        if (ha->brd == NULL) {
            printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
            return 0;
        }
        /* check and reset interface area */
        dp6_ptr = ha->brd;
        gdth_writel(DPMEM_MAGIC, &dp6_ptr->u);
        if (gdth_readl(&dp6_ptr->u) != DPMEM_MAGIC) {
            printk("GDT-PCI: Cannot access DPMEM at 0x%lx (shadowed?)\n", 
                   pcistr->dpmem);
            found = FALSE;
            for (i = 0xC8000; i < 0xE8000; i += 0x4000) {
                iounmap(ha->brd);
                ha->brd = ioremap(i, sizeof(ushort)); 
                if (ha->brd == NULL) {
                    printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
                    return 0;
                }
                if (gdth_readw(ha->brd) != 0xffff) {
                    TRACE2(("init_pci_old() address 0x%x busy\n", i));
                    continue;
                }
                iounmap(ha->brd);
                pci_write_config_dword(pcistr->pdev, 
                                       PCI_BASE_ADDRESS_0, i);
                ha->brd = ioremap(i, sizeof(gdt6_dpram_str)); 
                if (ha->brd == NULL) {
                    printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
                    return 0;
                }
                dp6_ptr = ha->brd;
                gdth_writel(DPMEM_MAGIC, &dp6_ptr->u);
                if (gdth_readl(&dp6_ptr->u) == DPMEM_MAGIC) {
                    printk("GDT-PCI: Use free address at 0x%x\n", i);
                    found = TRUE;
                    break;
                }
            }   
            if (!found) {
                printk("GDT-PCI: No free address found!\n");
                iounmap(ha->brd);
                return 0;
            }
        }
        memset_io(&dp6_ptr->u, 0, sizeof(dp6_ptr->u));
        if (gdth_readl(&dp6_ptr->u) != 0) {
            printk("GDT-PCI: Initialization error (DPMEM write error)\n");
            iounmap(ha->brd);
            return 0;
        }
        
        /* disable board interrupts, deinit services */
        gdth_writeb(0xff, &dp6_ptr->io.irqdel);
        gdth_writeb(0x00, &dp6_ptr->io.irqen);
        gdth_writeb(0x00, &dp6_ptr->u.ic.S_Status);
        gdth_writeb(0x00, &dp6_ptr->u.ic.Cmd_Index);

        gdth_writel(pcistr->dpmem, &dp6_ptr->u.ic.S_Info[0]);
        gdth_writeb(0xff, &dp6_ptr->u.ic.S_Cmd_Indx);
        gdth_writeb(0, &dp6_ptr->io.event);
        retries = INIT_RETRIES;
        gdth_delay(20);
        while (gdth_readb(&dp6_ptr->u.ic.S_Status) != 0xff) {
            if (--retries == 0) {
                printk("GDT-PCI: Initialization error (DEINIT failed)\n");
                iounmap(ha->brd);
                return 0;
            }
            gdth_delay(1);
        }
        prot_ver = (unchar)gdth_readl(&dp6_ptr->u.ic.S_Info[0]);
        gdth_writeb(0, &dp6_ptr->u.ic.S_Status);
        gdth_writeb(0xff, &dp6_ptr->io.irqdel);
        if (prot_ver != PROTOCOL_VERSION) {
            printk("GDT-PCI: Illegal protocol version\n");
            iounmap(ha->brd);
            return 0;
        }

        ha->type = GDT_PCI;
        ha->ic_all_size = sizeof(dp6_ptr->u);
        
        /* special command to controller BIOS */
        gdth_writel(0x00, &dp6_ptr->u.ic.S_Info[0]);
        gdth_writel(0x00, &dp6_ptr->u.ic.S_Info[1]);
        gdth_writel(0x00, &dp6_ptr->u.ic.S_Info[2]);
        gdth_writel(0x00, &dp6_ptr->u.ic.S_Info[3]);
        gdth_writeb(0xfe, &dp6_ptr->u.ic.S_Cmd_Indx);
        gdth_writeb(0, &dp6_ptr->io.event);
        retries = INIT_RETRIES;
        gdth_delay(20);
        while (gdth_readb(&dp6_ptr->u.ic.S_Status) != 0xfe) {
            if (--retries == 0) {
                printk("GDT-PCI: Initialization error\n");
                iounmap(ha->brd);
                return 0;
            }
            gdth_delay(1);
        }
        gdth_writeb(0, &dp6_ptr->u.ic.S_Status);
        gdth_writeb(0xff, &dp6_ptr->io.irqdel);

        ha->dma64_support = 0;

    } else if (ha->stype <= PCI_DEVICE_ID_VORTEX_GDT6555) { /* GDT6110, ... */
        ha->plx = (gdt6c_plx_regs *)pcistr->io;
        TRACE2(("init_pci_new() dpmem %lx irq %d\n",
            pcistr->dpmem,ha->irq));
        ha->brd = ioremap(pcistr->dpmem, sizeof(gdt6c_dpram_str));
        if (ha->brd == NULL) {
            printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
            iounmap(ha->brd);
            return 0;
        }
        /* check and reset interface area */
        dp6c_ptr = ha->brd;
        gdth_writel(DPMEM_MAGIC, &dp6c_ptr->u);
        if (gdth_readl(&dp6c_ptr->u) != DPMEM_MAGIC) {
            printk("GDT-PCI: Cannot access DPMEM at 0x%lx (shadowed?)\n", 
                   pcistr->dpmem);
            found = FALSE;
            for (i = 0xC8000; i < 0xE8000; i += 0x4000) {
                iounmap(ha->brd);
                ha->brd = ioremap(i, sizeof(ushort)); 
                if (ha->brd == NULL) {
                    printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
                    return 0;
                }
                if (gdth_readw(ha->brd) != 0xffff) {
                    TRACE2(("init_pci_plx() address 0x%x busy\n", i));
                    continue;
                }
                iounmap(ha->brd);
                pci_write_config_dword(pcistr->pdev, 
                                       PCI_BASE_ADDRESS_2, i);
                ha->brd = ioremap(i, sizeof(gdt6c_dpram_str)); 
                if (ha->brd == NULL) {
                    printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
                    return 0;
                }
                dp6c_ptr = ha->brd;
                gdth_writel(DPMEM_MAGIC, &dp6c_ptr->u);
                if (gdth_readl(&dp6c_ptr->u) == DPMEM_MAGIC) {
                    printk("GDT-PCI: Use free address at 0x%x\n", i);
                    found = TRUE;
                    break;
                }
            }   
            if (!found) {
                printk("GDT-PCI: No free address found!\n");
                iounmap(ha->brd);
                return 0;
            }
        }
        memset_io(&dp6c_ptr->u, 0, sizeof(dp6c_ptr->u));
        if (gdth_readl(&dp6c_ptr->u) != 0) {
            printk("GDT-PCI: Initialization error (DPMEM write error)\n");
            iounmap(ha->brd);
            return 0;
        }
        
        /* disable board interrupts, deinit services */
        outb(0x00,PTR2USHORT(&ha->plx->control1));
        outb(0xff,PTR2USHORT(&ha->plx->edoor_reg));
        
        gdth_writeb(0x00, &dp6c_ptr->u.ic.S_Status);
        gdth_writeb(0x00, &dp6c_ptr->u.ic.Cmd_Index);

        gdth_writel(pcistr->dpmem, &dp6c_ptr->u.ic.S_Info[0]);
        gdth_writeb(0xff, &dp6c_ptr->u.ic.S_Cmd_Indx);

        outb(1,PTR2USHORT(&ha->plx->ldoor_reg));

        retries = INIT_RETRIES;
        gdth_delay(20);
        while (gdth_readb(&dp6c_ptr->u.ic.S_Status) != 0xff) {
            if (--retries == 0) {
                printk("GDT-PCI: Initialization error (DEINIT failed)\n");
                iounmap(ha->brd);
                return 0;
            }
            gdth_delay(1);
        }
        prot_ver = (unchar)gdth_readl(&dp6c_ptr->u.ic.S_Info[0]);
        gdth_writeb(0, &dp6c_ptr->u.ic.Status);
        if (prot_ver != PROTOCOL_VERSION) {
            printk("GDT-PCI: Illegal protocol version\n");
            iounmap(ha->brd);
            return 0;
        }

        ha->type = GDT_PCINEW;
        ha->ic_all_size = sizeof(dp6c_ptr->u);

        /* special command to controller BIOS */
        gdth_writel(0x00, &dp6c_ptr->u.ic.S_Info[0]);
        gdth_writel(0x00, &dp6c_ptr->u.ic.S_Info[1]);
        gdth_writel(0x00, &dp6c_ptr->u.ic.S_Info[2]);
        gdth_writel(0x00, &dp6c_ptr->u.ic.S_Info[3]);
        gdth_writeb(0xfe, &dp6c_ptr->u.ic.S_Cmd_Indx);
        
        outb(1,PTR2USHORT(&ha->plx->ldoor_reg));

        retries = INIT_RETRIES;
        gdth_delay(20);
        while (gdth_readb(&dp6c_ptr->u.ic.S_Status) != 0xfe) {
            if (--retries == 0) {
                printk("GDT-PCI: Initialization error\n");
                iounmap(ha->brd);
                return 0;
            }
            gdth_delay(1);
        }
        gdth_writeb(0, &dp6c_ptr->u.ic.S_Status);

        ha->dma64_support = 0;

    } else {                                            /* MPR */
        TRACE2(("init_pci_mpr() dpmem %lx irq %d\n",pcistr->dpmem,ha->irq));
        ha->brd = ioremap(pcistr->dpmem, sizeof(gdt6m_dpram_str));
        if (ha->brd == NULL) {
            printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
            return 0;
        }

        /* manipulate config. space to enable DPMEM, start RP controller */
        pci_read_config_word(pcistr->pdev, PCI_COMMAND, &command);
        command |= 6;
        pci_write_config_word(pcistr->pdev, PCI_COMMAND, command);
        if (pci_resource_start(pcistr->pdev, 8) == 1UL)
            pci_resource_start(pcistr->pdev, 8) = 0UL;
        i = 0xFEFF0001UL;
        pci_write_config_dword(pcistr->pdev, PCI_ROM_ADDRESS, i);
        gdth_delay(1);
        pci_write_config_dword(pcistr->pdev, PCI_ROM_ADDRESS,
                               pci_resource_start(pcistr->pdev, 8));
        
        dp6m_ptr = ha->brd;

        /* Ensure that it is safe to access the non HW portions of DPMEM.
         * Aditional check needed for Xscale based RAID controllers */
        while( ((int)gdth_readb(&dp6m_ptr->i960r.sema0_reg) ) & 3 )
            gdth_delay(1);
        
        /* check and reset interface area */
        gdth_writel(DPMEM_MAGIC, &dp6m_ptr->u);
        if (gdth_readl(&dp6m_ptr->u) != DPMEM_MAGIC) {
            printk("GDT-PCI: Cannot access DPMEM at 0x%lx (shadowed?)\n", 
                   pcistr->dpmem);
            found = FALSE;
            for (i = 0xC8000; i < 0xE8000; i += 0x4000) {
                iounmap(ha->brd);
                ha->brd = ioremap(i, sizeof(ushort)); 
                if (ha->brd == NULL) {
                    printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
                    return 0;
                }
                if (gdth_readw(ha->brd) != 0xffff) {
                    TRACE2(("init_pci_mpr() address 0x%x busy\n", i));
                    continue;
                }
                iounmap(ha->brd);
                pci_write_config_dword(pcistr->pdev, 
                                       PCI_BASE_ADDRESS_0, i);
                ha->brd = ioremap(i, sizeof(gdt6m_dpram_str)); 
                if (ha->brd == NULL) {
                    printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
                    return 0;
                }
                dp6m_ptr = ha->brd;
                gdth_writel(DPMEM_MAGIC, &dp6m_ptr->u);
                if (gdth_readl(&dp6m_ptr->u) == DPMEM_MAGIC) {
                    printk("GDT-PCI: Use free address at 0x%x\n", i);
                    found = TRUE;
                    break;
                }
            }   
            if (!found) {
                printk("GDT-PCI: No free address found!\n");
                iounmap(ha->brd);
                return 0;
            }
        }
        memset_io(&dp6m_ptr->u, 0, sizeof(dp6m_ptr->u));
        
        /* disable board interrupts, deinit services */
        gdth_writeb(gdth_readb(&dp6m_ptr->i960r.edoor_en_reg) | 4,
                    &dp6m_ptr->i960r.edoor_en_reg);
        gdth_writeb(0xff, &dp6m_ptr->i960r.edoor_reg);
        gdth_writeb(0x00, &dp6m_ptr->u.ic.S_Status);
        gdth_writeb(0x00, &dp6m_ptr->u.ic.Cmd_Index);

        gdth_writel(pcistr->dpmem, &dp6m_ptr->u.ic.S_Info[0]);
        gdth_writeb(0xff, &dp6m_ptr->u.ic.S_Cmd_Indx);
        gdth_writeb(1, &dp6m_ptr->i960r.ldoor_reg);
        retries = INIT_RETRIES;
        gdth_delay(20);
        while (gdth_readb(&dp6m_ptr->u.ic.S_Status) != 0xff) {
            if (--retries == 0) {
                printk("GDT-PCI: Initialization error (DEINIT failed)\n");
                iounmap(ha->brd);
                return 0;
            }
            gdth_delay(1);
        }
        prot_ver = (unchar)gdth_readl(&dp6m_ptr->u.ic.S_Info[0]);
        gdth_writeb(0, &dp6m_ptr->u.ic.S_Status);
        if (prot_ver != PROTOCOL_VERSION) {
            printk("GDT-PCI: Illegal protocol version\n");
            iounmap(ha->brd);
            return 0;
        }

        ha->type = GDT_PCIMPR;
        ha->ic_all_size = sizeof(dp6m_ptr->u);
        
        /* special command to controller BIOS */
        gdth_writel(0x00, &dp6m_ptr->u.ic.S_Info[0]);
        gdth_writel(0x00, &dp6m_ptr->u.ic.S_Info[1]);
        gdth_writel(0x00, &dp6m_ptr->u.ic.S_Info[2]);
        gdth_writel(0x00, &dp6m_ptr->u.ic.S_Info[3]);
        gdth_writeb(0xfe, &dp6m_ptr->u.ic.S_Cmd_Indx);
        gdth_writeb(1, &dp6m_ptr->i960r.ldoor_reg);
        retries = INIT_RETRIES;
        gdth_delay(20);
        while (gdth_readb(&dp6m_ptr->u.ic.S_Status) != 0xfe) {
            if (--retries == 0) {
                printk("GDT-PCI: Initialization error\n");
                iounmap(ha->brd);
                return 0;
            }
            gdth_delay(1);
        }
        gdth_writeb(0, &dp6m_ptr->u.ic.S_Status);

        /* read FW version to detect 64-bit DMA support */
        gdth_writeb(0xfd, &dp6m_ptr->u.ic.S_Cmd_Indx);
        gdth_writeb(1, &dp6m_ptr->i960r.ldoor_reg);
        retries = INIT_RETRIES;
        gdth_delay(20);
        while (gdth_readb(&dp6m_ptr->u.ic.S_Status) != 0xfd) {
            if (--retries == 0) {
                printk("GDT-PCI: Initialization error (DEINIT failed)\n");
                iounmap(ha->brd);
                return 0;
            }
            gdth_delay(1);
        }
        prot_ver = (unchar)(gdth_readl(&dp6m_ptr->u.ic.S_Info[0]) >> 16);
        gdth_writeb(0, &dp6m_ptr->u.ic.S_Status);
        if (prot_ver < 0x2b)      /* FW < x.43: no 64-bit DMA support */
            ha->dma64_support = 0;
        else 
            ha->dma64_support = 1;
    }

    return 1;
}


/* controller protocol functions */

static void __init gdth_enable_int(int hanum)
{
    gdth_ha_str *ha;
    ulong flags;
    gdt2_dpram_str __iomem *dp2_ptr;
    gdt6_dpram_str __iomem *dp6_ptr;
    gdt6m_dpram_str __iomem *dp6m_ptr;

    TRACE(("gdth_enable_int() hanum %d\n",hanum));
    ha = HADATA(gdth_ctr_tab[hanum]);
    spin_lock_irqsave(&ha->smp_lock, flags);

    if (ha->type == GDT_EISA) {
        outb(0xff, ha->bmic + EDOORREG);
        outb(0xff, ha->bmic + EDENABREG);
        outb(0x01, ha->bmic + EINTENABREG);
    } else if (ha->type == GDT_ISA) {
        dp2_ptr = ha->brd;
        gdth_writeb(1, &dp2_ptr->io.irqdel);
        gdth_writeb(0, &dp2_ptr->u.ic.Cmd_Index);
        gdth_writeb(1, &dp2_ptr->io.irqen);
    } else if (ha->type == GDT_PCI) {
        dp6_ptr = ha->brd;
        gdth_writeb(1, &dp6_ptr->io.irqdel);
        gdth_writeb(0, &dp6_ptr->u.ic.Cmd_Index);
        gdth_writeb(1, &dp6_ptr->io.irqen);
    } else if (ha->type == GDT_PCINEW) {
        outb(0xff, PTR2USHORT(&ha->plx->edoor_reg));
        outb(0x03, PTR2USHORT(&ha->plx->control1));
    } else if (ha->type == GDT_PCIMPR) {
        dp6m_ptr = ha->brd;
        gdth_writeb(0xff, &dp6m_ptr->i960r.edoor_reg);
        gdth_writeb(gdth_readb(&dp6m_ptr->i960r.edoor_en_reg) & ~4,
                    &dp6m_ptr->i960r.edoor_en_reg);
    }
    spin_unlock_irqrestore(&ha->smp_lock, flags);
}


static int gdth_get_status(unchar *pIStatus,int irq)
{
    register gdth_ha_str *ha;
    int i;

    TRACE(("gdth_get_status() irq %d ctr_count %d\n",
           irq,gdth_ctr_count));
    
    *pIStatus = 0;
    for (i=0; i<gdth_ctr_count; ++i) {
        ha = HADATA(gdth_ctr_tab[i]);
        if (ha->irq != (unchar)irq)             /* check IRQ */
            continue;
        if (ha->type == GDT_EISA)
            *pIStatus = inb((ushort)ha->bmic + EDOORREG);
        else if (ha->type == GDT_ISA)
            *pIStatus =
                gdth_readb(&((gdt2_dpram_str __iomem *)ha->brd)->u.ic.Cmd_Index);
        else if (ha->type == GDT_PCI)
            *pIStatus =
                gdth_readb(&((gdt6_dpram_str __iomem *)ha->brd)->u.ic.Cmd_Index);
        else if (ha->type == GDT_PCINEW) 
            *pIStatus = inb(PTR2USHORT(&ha->plx->edoor_reg));
        else if (ha->type == GDT_PCIMPR)
            *pIStatus =
                gdth_readb(&((gdt6m_dpram_str __iomem *)ha->brd)->i960r.edoor_reg);
   
        if (*pIStatus)                                  
            return i;                           /* board found */
    }
    return -1;
}
                 
    
static int gdth_test_busy(int hanum)
{
    register gdth_ha_str *ha;
    register int gdtsema0 = 0;

    TRACE(("gdth_test_busy() hanum %d\n",hanum));
    
    ha = HADATA(gdth_ctr_tab[hanum]);
    if (ha->type == GDT_EISA)
        gdtsema0 = (int)inb(ha->bmic + SEMA0REG);
    else if (ha->type == GDT_ISA)
        gdtsema0 = (int)gdth_readb(&((gdt2_dpram_str __iomem *)ha->brd)->u.ic.Sema0);
    else if (ha->type == GDT_PCI)
        gdtsema0 = (int)gdth_readb(&((gdt6_dpram_str __iomem *)ha->brd)->u.ic.Sema0);
    else if (ha->type == GDT_PCINEW) 
        gdtsema0 = (int)inb(PTR2USHORT(&ha->plx->sema0_reg));
    else if (ha->type == GDT_PCIMPR)
        gdtsema0 = 
            (int)gdth_readb(&((gdt6m_dpram_str __iomem *)ha->brd)->i960r.sema0_reg);

    return (gdtsema0 & 1);
}


static int gdth_get_cmd_index(int hanum)
{
    register gdth_ha_str *ha;
    int i;

    TRACE(("gdth_get_cmd_index() hanum %d\n",hanum));

    ha = HADATA(gdth_ctr_tab[hanum]);
    for (i=0; i<GDTH_MAXCMDS; ++i) {
        if (ha->cmd_tab[i].cmnd == UNUSED_CMND) {
            ha->cmd_tab[i].cmnd = ha->pccb->RequestBuffer;
            ha->cmd_tab[i].service = ha->pccb->Service;
            ha->pccb->CommandIndex = (ulong32)i+2;
            return (i+2);
        }
    }
    return 0;
}


static void gdth_set_sema0(int hanum)
{
    register gdth_ha_str *ha;

    TRACE(("gdth_set_sema0() hanum %d\n",hanum));

    ha = HADATA(gdth_ctr_tab[hanum]);
    if (ha->type == GDT_EISA) {
        outb(1, ha->bmic + SEMA0REG);
    } else if (ha->type == GDT_ISA) {
        gdth_writeb(1, &((gdt2_dpram_str __iomem *)ha->brd)->u.ic.Sema0);
    } else if (ha->type == GDT_PCI) {
        gdth_writeb(1, &((gdt6_dpram_str __iomem *)ha->brd)->u.ic.Sema0);
    } else if (ha->type == GDT_PCINEW) { 
        outb(1, PTR2USHORT(&ha->plx->sema0_reg));
    } else if (ha->type == GDT_PCIMPR) {
        gdth_writeb(1, &((gdt6m_dpram_str __iomem *)ha->brd)->i960r.sema0_reg);
    }
}


static void gdth_copy_command(int hanum)
{
    register gdth_ha_str *ha;
    register gdth_cmd_str *cmd_ptr;
    register gdt6m_dpram_str __iomem *dp6m_ptr;
    register gdt6c_dpram_str __iomem *dp6c_ptr;
    gdt6_dpram_str __iomem *dp6_ptr;
    gdt2_dpram_str __iomem *dp2_ptr;
    ushort cp_count,dp_offset,cmd_no;
    
    TRACE(("gdth_copy_command() hanum %d\n",hanum));

    ha = HADATA(gdth_ctr_tab[hanum]);
    cp_count = ha->cmd_len;
    dp_offset= ha->cmd_offs_dpmem;
    cmd_no   = ha->cmd_cnt;
    cmd_ptr  = ha->pccb;

    ++ha->cmd_cnt;                                                      
    if (ha->type == GDT_EISA)
        return;                                 /* no DPMEM, no copy */

    /* set cpcount dword aligned */
    if (cp_count & 3)
        cp_count += (4 - (cp_count & 3));

    ha->cmd_offs_dpmem += cp_count;
    
    /* set offset and service, copy command to DPMEM */
    if (ha->type == GDT_ISA) {
        dp2_ptr = ha->brd;
        gdth_writew(dp_offset + DPMEM_COMMAND_OFFSET, 
                    &dp2_ptr->u.ic.comm_queue[cmd_no].offset);
        gdth_writew((ushort)cmd_ptr->Service, 
                    &dp2_ptr->u.ic.comm_queue[cmd_no].serv_id);
        memcpy_toio(&dp2_ptr->u.ic.gdt_dpr_cmd[dp_offset],cmd_ptr,cp_count);
    } else if (ha->type == GDT_PCI) {
        dp6_ptr = ha->brd;
        gdth_writew(dp_offset + DPMEM_COMMAND_OFFSET, 
                    &dp6_ptr->u.ic.comm_queue[cmd_no].offset);
        gdth_writew((ushort)cmd_ptr->Service, 
                    &dp6_ptr->u.ic.comm_queue[cmd_no].serv_id);
        memcpy_toio(&dp6_ptr->u.ic.gdt_dpr_cmd[dp_offset],cmd_ptr,cp_count);
    } else if (ha->type == GDT_PCINEW) {
        dp6c_ptr = ha->brd;
        gdth_writew(dp_offset + DPMEM_COMMAND_OFFSET, 
                    &dp6c_ptr->u.ic.comm_queue[cmd_no].offset);
        gdth_writew((ushort)cmd_ptr->Service, 
                    &dp6c_ptr->u.ic.comm_queue[cmd_no].serv_id);
        memcpy_toio(&dp6c_ptr->u.ic.gdt_dpr_cmd[dp_offset],cmd_ptr,cp_count);
    } else if (ha->type == GDT_PCIMPR) {
        dp6m_ptr = ha->brd;
        gdth_writew(dp_offset + DPMEM_COMMAND_OFFSET, 
                    &dp6m_ptr->u.ic.comm_queue[cmd_no].offset);
        gdth_writew((ushort)cmd_ptr->Service, 
                    &dp6m_ptr->u.ic.comm_queue[cmd_no].serv_id);
        memcpy_toio(&dp6m_ptr->u.ic.gdt_dpr_cmd[dp_offset],cmd_ptr,cp_count);
    }
}


static void gdth_release_event(int hanum)
{
    register gdth_ha_str *ha;

    TRACE(("gdth_release_event() hanum %d\n",hanum));
    ha = HADATA(gdth_ctr_tab[hanum]);

#ifdef GDTH_STATISTICS
    {
        ulong32 i,j;
        for (i=0,j=0; j<GDTH_MAXCMDS; ++j) {
            if (ha->cmd_tab[j].cmnd != UNUSED_CMND)
                ++i;
        }
        if (max_index < i) {
            max_index = i;
            TRACE3(("GDT: max_index = %d\n",(ushort)i));
        }
    }
#endif

    if (ha->pccb->OpCode == GDT_INIT)
        ha->pccb->Service |= 0x80;

    if (ha->type == GDT_EISA) {
        if (ha->pccb->OpCode == GDT_INIT)               /* store DMA buffer */
            outl(ha->ccb_phys, ha->bmic + MAILBOXREG);
        outb(ha->pccb->Service, ha->bmic + LDOORREG);
    } else if (ha->type == GDT_ISA) {
        gdth_writeb(0, &((gdt2_dpram_str __iomem *)ha->brd)->io.event);
    } else if (ha->type == GDT_PCI) {
        gdth_writeb(0, &((gdt6_dpram_str __iomem *)ha->brd)->io.event);
    } else if (ha->type == GDT_PCINEW) { 
        outb(1, PTR2USHORT(&ha->plx->ldoor_reg));
    } else if (ha->type == GDT_PCIMPR) {
        gdth_writeb(1, &((gdt6m_dpram_str __iomem *)ha->brd)->i960r.ldoor_reg);
    }
}

    
static int gdth_wait(int hanum,int index,ulong32 time)
{
    gdth_ha_str *ha;
    int answer_found = FALSE;

    TRACE(("gdth_wait() hanum %d index %d time %d\n",hanum,index,time));

    ha = HADATA(gdth_ctr_tab[hanum]);
    if (index == 0)
        return 1;                               /* no wait required */

    gdth_from_wait = TRUE;
    do {
        gdth_interrupt((int)ha->irq,ha);
        if (wait_hanum==hanum && wait_index==index) {
            answer_found = TRUE;
            break;
        }
        gdth_delay(1);
    } while (--time);
    gdth_from_wait = FALSE;
    
    while (gdth_test_busy(hanum))
        gdth_delay(0);

    return (answer_found);
}


static int gdth_internal_cmd(int hanum,unchar service,ushort opcode,ulong32 p1,
                             ulong64 p2,ulong64 p3)
{
    register gdth_ha_str *ha;
    register gdth_cmd_str *cmd_ptr;
    int retries,index;

    TRACE2(("gdth_internal_cmd() service %d opcode %d\n",service,opcode));

    ha = HADATA(gdth_ctr_tab[hanum]);
    cmd_ptr = ha->pccb;
    memset((char*)cmd_ptr,0,sizeof(gdth_cmd_str));

    /* make command  */
    for (retries = INIT_RETRIES;;) {
        cmd_ptr->Service          = service;
        cmd_ptr->RequestBuffer    = INTERNAL_CMND;
        if (!(index=gdth_get_cmd_index(hanum))) {
            TRACE(("GDT: No free command index found\n"));
            return 0;
        }
        gdth_set_sema0(hanum);
        cmd_ptr->OpCode           = opcode;
        cmd_ptr->BoardNode        = LOCALBOARD;
        if (service == CACHESERVICE) {
            if (opcode == GDT_IOCTL) {
                cmd_ptr->u.ioctl.subfunc = p1;
                cmd_ptr->u.ioctl.channel = (ulong32)p2;
                cmd_ptr->u.ioctl.param_size = (ushort)p3;
                cmd_ptr->u.ioctl.p_param = ha->scratch_phys;
            } else {
                if (ha->cache_feat & GDT_64BIT) {
                    cmd_ptr->u.cache64.DeviceNo = (ushort)p1;
                    cmd_ptr->u.cache64.BlockNo  = p2;
                } else {
                    cmd_ptr->u.cache.DeviceNo = (ushort)p1;
                    cmd_ptr->u.cache.BlockNo  = (ulong32)p2;
                }
            }
        } else if (service == SCSIRAWSERVICE) {
            if (ha->raw_feat & GDT_64BIT) {
                cmd_ptr->u.raw64.direction  = p1;
                cmd_ptr->u.raw64.bus        = (unchar)p2;
                cmd_ptr->u.raw64.target     = (unchar)p3;
                cmd_ptr->u.raw64.lun        = (unchar)(p3 >> 8);
            } else {
                cmd_ptr->u.raw.direction  = p1;
                cmd_ptr->u.raw.bus        = (unchar)p2;
                cmd_ptr->u.raw.target     = (unchar)p3;
                cmd_ptr->u.raw.lun        = (unchar)(p3 >> 8);
            }
        } else if (service == SCREENSERVICE) {
            if (opcode == GDT_REALTIME) {
                *(ulong32 *)&cmd_ptr->u.screen.su.data[0] = p1;
                *(ulong32 *)&cmd_ptr->u.screen.su.data[4] = (ulong32)p2;
                *(ulong32 *)&cmd_ptr->u.screen.su.data[8] = (ulong32)p3;
            }
        }
        ha->cmd_len          = sizeof(gdth_cmd_str);
        ha->cmd_offs_dpmem   = 0;
        ha->cmd_cnt          = 0;
        gdth_copy_command(hanum);
        gdth_release_event(hanum);
        gdth_delay(20);
        if (!gdth_wait(hanum,index,INIT_TIMEOUT)) {
            printk("GDT: Initialization error (timeout service %d)\n",service);
            return 0;
        }
        if (ha->status != S_BSY || --retries == 0)
            break;
        gdth_delay(1);   
    }   
    
    return (ha->status != S_OK ? 0:1);
}
    

/* search for devices */

static int __init gdth_search_drives(int hanum)
{
    register gdth_ha_str *ha;
    ushort cdev_cnt, i;
    int ok;
    ulong32 bus_no, drv_cnt, drv_no, j;
    gdth_getch_str *chn;
    gdth_drlist_str *drl;
    gdth_iochan_str *ioc;
    gdth_raw_iochan_str *iocr;
    gdth_arcdl_str *alst;
    gdth_alist_str *alst2;
    gdth_oem_str_ioctl *oemstr;
#ifdef INT_COAL
    gdth_perf_modes *pmod;
#endif

#ifdef GDTH_RTC
    unchar rtc[12];
    ulong flags;
#endif     
   
    TRACE(("gdth_search_drives() hanum %d\n",hanum));
    ha = HADATA(gdth_ctr_tab[hanum]);
    ok = 0;

    /* initialize controller services, at first: screen service */
    ha->screen_feat = 0;
    if (!force_dma32) {
        ok = gdth_internal_cmd(hanum,SCREENSERVICE,GDT_X_INIT_SCR,0,0,0);
        if (ok)
            ha->screen_feat = GDT_64BIT;
    }
    if (force_dma32 || (!ok && ha->status == (ushort)S_NOFUNC))
        ok = gdth_internal_cmd(hanum,SCREENSERVICE,GDT_INIT,0,0,0);
    if (!ok) {
        printk("GDT-HA %d: Initialization error screen service (code %d)\n",
               hanum, ha->status);
        return 0;
    }
    TRACE2(("gdth_search_drives(): SCREENSERVICE initialized\n"));

#ifdef GDTH_RTC
    /* read realtime clock info, send to controller */
    /* 1. wait for the falling edge of update flag */
    spin_lock_irqsave(&rtc_lock, flags);
    for (j = 0; j < 1000000; ++j)
        if (CMOS_READ(RTC_FREQ_SELECT) & RTC_UIP)
            break;
    for (j = 0; j < 1000000; ++j)
        if (!(CMOS_READ(RTC_FREQ_SELECT) & RTC_UIP))
            break;
    /* 2. read info */
    do {
        for (j = 0; j < 12; ++j) 
            rtc[j] = CMOS_READ(j);
    } while (rtc[0] != CMOS_READ(0));
    spin_lock_irqrestore(&rtc_lock, flags);
    TRACE2(("gdth_search_drives(): RTC: %x/%x/%x\n",*(ulong32 *)&rtc[0],
            *(ulong32 *)&rtc[4], *(ulong32 *)&rtc[8]));
    /* 3. send to controller firmware */
    gdth_internal_cmd(hanum,SCREENSERVICE,GDT_REALTIME, *(ulong32 *)&rtc[0],
                      *(ulong32 *)&rtc[4], *(ulong32 *)&rtc[8]);
#endif  
 
    /* unfreeze all IOs */
    gdth_internal_cmd(hanum,CACHESERVICE,GDT_UNFREEZE_IO,0,0,0);
 
    /* initialize cache service */
    ha->cache_feat = 0;
    if (!force_dma32) {
        ok = gdth_internal_cmd(hanum,CACHESERVICE,GDT_X_INIT_HOST,LINUX_OS,0,0);
        if (ok)
            ha->cache_feat = GDT_64BIT;
    }
    if (force_dma32 || (!ok && ha->status == (ushort)S_NOFUNC))
        ok = gdth_internal_cmd(hanum,CACHESERVICE,GDT_INIT,LINUX_OS,0,0);
    if (!ok) {
        printk("GDT-HA %d: Initialization error cache service (code %d)\n",
               hanum, ha->status);
        return 0;
    }
    TRACE2(("gdth_search_drives(): CACHESERVICE initialized\n"));
    cdev_cnt = (ushort)ha->info;
    ha->fw_vers = ha->service;

#ifdef INT_COAL
    if (ha->type == GDT_PCIMPR) {
        /* set perf. modes */
        pmod = (gdth_perf_modes *)ha->pscratch;
        pmod->version          = 1;
        pmod->st_mode          = 1;    /* enable one status buffer */
        *((ulong64 *)&pmod->st_buff_addr1) = ha->coal_stat_phys;
        pmod->st_buff_indx1    = COALINDEX;
        pmod->st_buff_addr2    = 0;
        pmod->st_buff_u_addr2  = 0;
        pmod->st_buff_indx2    = 0;
        pmod->st_buff_size     = sizeof(gdth_coal_status) * MAXOFFSETS;
        pmod->cmd_mode         = 0;    // disable all cmd buffers
        pmod->cmd_buff_addr1   = 0;
        pmod->cmd_buff_u_addr1 = 0;
        pmod->cmd_buff_indx1   = 0;
        pmod->cmd_buff_addr2   = 0;
        pmod->cmd_buff_u_addr2 = 0;
        pmod->cmd_buff_indx2   = 0;
        pmod->cmd_buff_size    = 0;
        pmod->reserved1        = 0;            
        pmod->reserved2        = 0;            
        if (gdth_internal_cmd(hanum,CACHESERVICE,GDT_IOCTL,SET_PERF_MODES,
                              INVALID_CHANNEL,sizeof(gdth_perf_modes))) {
            printk("GDT-HA %d: Interrupt coalescing activated\n", hanum);
        }
    }
#endif

    /* detect number of buses - try new IOCTL */
    iocr = (gdth_raw_iochan_str *)ha->pscratch;
    iocr->hdr.version        = 0xffffffff;
    iocr->hdr.list_entries   = MAXBUS;
    iocr->hdr.first_chan     = 0;
    iocr->hdr.last_chan      = MAXBUS-1;
    iocr->hdr.list_offset    = GDTOFFSOF(gdth_raw_iochan_str, list[0]);
    if (gdth_internal_cmd(hanum,CACHESERVICE,GDT_IOCTL,IOCHAN_RAW_DESC,
                          INVALID_CHANNEL,sizeof(gdth_raw_iochan_str))) {
        TRACE2(("IOCHAN_RAW_DESC supported!\n"));
        ha->bus_cnt = iocr->hdr.chan_count;
        for (bus_no = 0; bus_no < ha->bus_cnt; ++bus_no) {
            if (iocr->list[bus_no].proc_id < MAXID)
                ha->bus_id[bus_no] = iocr->list[bus_no].proc_id;
            else
                ha->bus_id[bus_no] = 0xff;
        }
    } else {
        /* old method */
        chn = (gdth_getch_str *)ha->pscratch;
        for (bus_no = 0; bus_no < MAXBUS; ++bus_no) {
            chn->channel_no = bus_no;
            if (!gdth_internal_cmd(hanum,CACHESERVICE,GDT_IOCTL,
                                   SCSI_CHAN_CNT | L_CTRL_PATTERN,
                                   IO_CHANNEL | INVALID_CHANNEL,
                                   sizeof(gdth_getch_str))) {
                if (bus_no == 0) {
                    printk("GDT-HA %d: Error detecting channel count (0x%x)\n",
                           hanum, ha->status);
                    return 0;
                }
                break;
            }
            if (chn->siop_id < MAXID)
                ha->bus_id[bus_no] = chn->siop_id;
            else
                ha->bus_id[bus_no] = 0xff;
        }       
        ha->bus_cnt = (unchar)bus_no;
    }
    TRACE2(("gdth_search_drives() %d channels\n",ha->bus_cnt));

    /* read cache configuration */
    if (!gdth_internal_cmd(hanum,CACHESERVICE,GDT_IOCTL,CACHE_INFO,
                           INVALID_CHANNEL,sizeof(gdth_cinfo_str))) {
        printk("GDT-HA %d: Initialization error cache service (code %d)\n",
               hanum, ha->status);
        return 0;
    }
    ha->cpar = ((gdth_cinfo_str *)ha->pscratch)->cpar;
    TRACE2(("gdth_search_drives() cinfo: vs %x sta %d str %d dw %d b %d\n",
            ha->cpar.version,ha->cpar.state,ha->cpar.strategy,
            ha->cpar.write_back,ha->cpar.block_size));

    /* read board info and features */
    ha->more_proc = FALSE;
    if (gdth_internal_cmd(hanum,CACHESERVICE,GDT_IOCTL,BOARD_INFO,
                          INVALID_CHANNEL,sizeof(gdth_binfo_str))) {
        memcpy(&ha->binfo, (gdth_binfo_str *)ha->pscratch,
               sizeof(gdth_binfo_str));
        if (gdth_internal_cmd(hanum,CACHESERVICE,GDT_IOCTL,BOARD_FEATURES,
                              INVALID_CHANNEL,sizeof(gdth_bfeat_str))) {
            TRACE2(("BOARD_INFO/BOARD_FEATURES supported\n"));
            ha->bfeat = *(gdth_bfeat_str *)ha->pscratch;
            ha->more_proc = TRUE;
        }
    } else {
        TRACE2(("BOARD_INFO requires firmware >= 1.10/2.08\n"));
        strcpy(ha->binfo.type_string, gdth_ctr_name(hanum));
    }
    TRACE2(("Controller name: %s\n",ha->binfo.type_string));

    /* read more informations */
    if (ha->more_proc) {
        /* physical drives, channel addresses */
        ioc = (gdth_iochan_str *)ha->pscratch;
        ioc->hdr.version        = 0xffffffff;
        ioc->hdr.list_entries   = MAXBUS;
        ioc->hdr.first_chan     = 0;
        ioc->hdr.last_chan      = MAXBUS-1;
        ioc->hdr.list_offset    = GDTOFFSOF(gdth_iochan_str, list[0]);
        if (gdth_internal_cmd(hanum,CACHESERVICE,GDT_IOCTL,IOCHAN_DESC,
                              INVALID_CHANNEL,sizeof(gdth_iochan_str))) {
            for (bus_no = 0; bus_no < ha->bus_cnt; ++bus_no) {
                ha->raw[bus_no].address = ioc->list[bus_no].address;
                ha->raw[bus_no].local_no = ioc->list[bus_no].local_no;
            }
        } else {
            for (bus_no = 0; bus_no < ha->bus_cnt; ++bus_no) {
                ha->raw[bus_no].address = IO_CHANNEL;
                ha->raw[bus_no].local_no = bus_no;
            }
        }
        for (bus_no = 0; bus_no < ha->bus_cnt; ++bus_no) {
            chn = (gdth_getch_str *)ha->pscratch;
            chn->channel_no = ha->raw[bus_no].local_no;
            if (gdth_internal_cmd(hanum,CACHESERVICE,GDT_IOCTL,
                                  SCSI_CHAN_CNT | L_CTRL_PATTERN,
                                  ha->raw[bus_no].address | INVALID_CHANNEL,
                                  sizeof(gdth_getch_str))) {
                ha->raw[bus_no].pdev_cnt = chn->drive_cnt;
                TRACE2(("Channel %d: %d phys. drives\n",
                        bus_no,chn->drive_cnt));
            }
            if (ha->raw[bus_no].pdev_cnt > 0) {
                drl = (gdth_drlist_str *)ha->pscratch;
                drl->sc_no = ha->raw[bus_no].local_no;
                drl->sc_cnt = ha->raw[bus_no].pdev_cnt;
                if (gdth_internal_cmd(hanum,CACHESERVICE,GDT_IOCTL,
                                      SCSI_DR_LIST | L_CTRL_PATTERN,
                                      ha->raw[bus_no].address | INVALID_CHANNEL,
                                      sizeof(gdth_drlist_str))) {
                    for (j = 0; j < ha->raw[bus_no].pdev_cnt; ++j) 
                        ha->raw[bus_no].id_list[j] = drl->sc_list[j];
                } else {
                    ha->raw[bus_no].pdev_cnt = 0;
                }
            }
        }

        /* logical drives */
        if (gdth_internal_cmd(hanum,CACHESERVICE,GDT_IOCTL,CACHE_DRV_CNT,
                              INVALID_CHANNEL,sizeof(ulong32))) {
            drv_cnt = *(ulong32 *)ha->pscratch;
            if (gdth_internal_cmd(hanum,CACHESERVICE,GDT_IOCTL,CACHE_DRV_LIST,
                                  INVALID_CHANNEL,drv_cnt * sizeof(ulong32))) {
                for (j = 0; j < drv_cnt; ++j) {
                    drv_no = ((ulong32 *)ha->pscratch)[j];
                    if (drv_no < MAX_LDRIVES) {
                        ha->hdr[drv_no].is_logdrv = TRUE;
                        TRACE2(("Drive %d is log. drive\n",drv_no));
                    }
                }
            }
            alst = (gdth_arcdl_str *)ha->pscratch;
            alst->entries_avail = MAX_LDRIVES;
            alst->first_entry = 0;
            alst->list_offset = GDTOFFSOF(gdth_arcdl_str, list[0]);
            if (gdth_internal_cmd(hanum,CACHESERVICE,GDT_IOCTL,
                                  ARRAY_DRV_LIST2 | LA_CTRL_PATTERN, 
                                  INVALID_CHANNEL, sizeof(gdth_arcdl_str) +
                                  (alst->entries_avail-1) * sizeof(gdth_alist_str))) { 
                for (j = 0; j < alst->entries_init; ++j) {
                    ha->hdr[j].is_arraydrv = alst->list[j].is_arrayd;
                    ha->hdr[j].is_master = alst->list[j].is_master;
                    ha->hdr[j].is_parity = alst->list[j].is_parity;
                    ha->hdr[j].is_hotfix = alst->list[j].is_hotfix;
                    ha->hdr[j].master_no = alst->list[j].cd_handle;
                }
            } else if (gdth_internal_cmd(hanum,CACHESERVICE,GDT_IOCTL,
                                         ARRAY_DRV_LIST | LA_CTRL_PATTERN,
                                         0, 35 * sizeof(gdth_alist_str))) {
                for (j = 0; j < 35; ++j) {
                    alst2 = &((gdth_alist_str *)ha->pscratch)[j];
                    ha->hdr[j].is_arraydrv = alst2->is_arrayd;
                    ha->hdr[j].is_master = alst2->is_master;
                    ha->hdr[j].is_parity = alst2->is_parity;
                    ha->hdr[j].is_hotfix = alst2->is_hotfix;
                    ha->hdr[j].master_no = alst2->cd_handle;
                }
            }
        }
    }       
                                  
    /* initialize raw service */
    ha->raw_feat = 0;
    if (!force_dma32) {
        ok = gdth_internal_cmd(hanum,SCSIRAWSERVICE,GDT_X_INIT_RAW,0,0,0);
        if (ok)
            ha->raw_feat = GDT_64BIT;
    }
    if (force_dma32 || (!ok && ha->status == (ushort)S_NOFUNC))
        ok = gdth_internal_cmd(hanum,SCSIRAWSERVICE,GDT_INIT,0,0,0);
    if (!ok) {
        printk("GDT-HA %d: Initialization error raw service (code %d)\n",
               hanum, ha->status);
        return 0;
    }
    TRACE2(("gdth_search_drives(): RAWSERVICE initialized\n"));

    /* set/get features raw service (scatter/gather) */
    if (gdth_internal_cmd(hanum,SCSIRAWSERVICE,GDT_SET_FEAT,SCATTER_GATHER,
                          0,0)) {
        TRACE2(("gdth_search_drives(): set features RAWSERVICE OK\n"));
        if (gdth_internal_cmd(hanum,SCSIRAWSERVICE,GDT_GET_FEAT,0,0,0)) {
            TRACE2(("gdth_search_dr(): get feat RAWSERVICE %d\n",
                    ha->info));
            ha->raw_feat |= (ushort)ha->info;
        }
    } 

    /* set/get features cache service (equal to raw service) */
    if (gdth_internal_cmd(hanum,CACHESERVICE,GDT_SET_FEAT,0,
                          SCATTER_GATHER,0)) {
        TRACE2(("gdth_search_drives(): set features CACHESERVICE OK\n"));
        if (gdth_internal_cmd(hanum,CACHESERVICE,GDT_GET_FEAT,0,0,0)) {
            TRACE2(("gdth_search_dr(): get feat CACHESERV. %d\n",
                    ha->info));
            ha->cache_feat |= (ushort)ha->info;
        }
    }

    /* reserve drives for raw service */
    if (reserve_mode != 0) {
        gdth_internal_cmd(hanum,SCSIRAWSERVICE,GDT_RESERVE_ALL,
                          reserve_mode == 1 ? 1 : 3, 0, 0);
        TRACE2(("gdth_search_drives(): RESERVE_ALL code %d\n", 
                ha->status));
    }
    for (i = 0; i < MAX_RES_ARGS; i += 4) {
        if (reserve_list[i] == hanum && reserve_list[i+1] < ha->bus_cnt && 
            reserve_list[i+2] < ha->tid_cnt && reserve_list[i+3] < MAXLUN) {
            TRACE2(("gdth_search_drives(): reserve ha %d bus %d id %d lun %d\n",
                    reserve_list[i], reserve_list[i+1],
                    reserve_list[i+2], reserve_list[i+3]));
            if (!gdth_internal_cmd(hanum,SCSIRAWSERVICE,GDT_RESERVE,0,
                                   reserve_list[i+1], reserve_list[i+2] | 
                                   (reserve_list[i+3] << 8))) {
                printk("GDT-HA %d: Error raw service (RESERVE, code %d)\n",
                       hanum, ha->status);
             }
        }
    }

    /* Determine OEM string using IOCTL */
    oemstr = (gdth_oem_str_ioctl *)ha->pscratch;
    oemstr->params.ctl_version = 0x01;
    oemstr->params.buffer_size = sizeof(oemstr->text);
    if (gdth_internal_cmd(hanum,CACHESERVICE,GDT_IOCTL,
                          CACHE_READ_OEM_STRING_RECORD,INVALID_CHANNEL,
                          sizeof(gdth_oem_str_ioctl))) {
        TRACE2(("gdth_search_drives(): CACHE_READ_OEM_STRING_RECORD OK\n"));
        printk("GDT-HA %d: Vendor: %s Name: %s\n",
               hanum,oemstr->text.oem_company_name,ha->binfo.type_string);
        /* Save the Host Drive inquiry data */
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
        strlcpy(ha->oem_name,oemstr->text.scsi_host_drive_inquiry_vendor_id,
                sizeof(ha->oem_name));
#else
        strncpy(ha->oem_name,oemstr->text.scsi_host_drive_inquiry_vendor_id,7);
        ha->oem_name[7] = '\0';
#endif
    } else {
        /* Old method, based on PCI ID */
        TRACE2(("gdth_search_drives(): CACHE_READ_OEM_STRING_RECORD failed\n"));
        printk("GDT-HA %d: Name: %s\n",
               hanum,ha->binfo.type_string);
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
        if (ha->oem_id == OEM_ID_INTEL)
            strlcpy(ha->oem_name,"Intel  ", sizeof(ha->oem_name));
        else
            strlcpy(ha->oem_name,"ICP    ", sizeof(ha->oem_name));
#else 
        if (ha->oem_id == OEM_ID_INTEL)
            strcpy(ha->oem_name,"Intel  ");
        else
            strcpy(ha->oem_name,"ICP    ");
#endif
    }

    /* scanning for host drives */
    for (i = 0; i < cdev_cnt; ++i) 
        gdth_analyse_hdrive(hanum,i);
    
    TRACE(("gdth_search_drives() OK\n"));
    return 1;
}

static int gdth_analyse_hdrive(int hanum,ushort hdrive)
{
    register gdth_ha_str *ha;
    ulong32 drv_cyls;
    int drv_hds, drv_secs;

    TRACE(("gdth_analyse_hdrive() hanum %d drive %d\n",hanum,hdrive));
    if (hdrive >= MAX_HDRIVES)
        return 0;
    ha = HADATA(gdth_ctr_tab[hanum]);

    if (!gdth_internal_cmd(hanum,CACHESERVICE,GDT_INFO,hdrive,0,0)) 
        return 0;
    ha->hdr[hdrive].present = TRUE;
    ha->hdr[hdrive].size = ha->info;
   
    /* evaluate mapping (sectors per head, heads per cylinder) */
    ha->hdr[hdrive].size &= ~SECS32;
    if (ha->info2 == 0) {
        gdth_eval_mapping(ha->hdr[hdrive].size,&drv_cyls,&drv_hds,&drv_secs);
    } else {
        drv_hds = ha->info2 & 0xff;
        drv_secs = (ha->info2 >> 8) & 0xff;
        drv_cyls = (ulong32)ha->hdr[hdrive].size / drv_hds / drv_secs;
    }
    ha->hdr[hdrive].heads = (unchar)drv_hds;
    ha->hdr[hdrive].secs  = (unchar)drv_secs;
    /* round size */
    ha->hdr[hdrive].size  = drv_cyls * drv_hds * drv_secs;
    
    if (ha->cache_feat & GDT_64BIT) {
        if (gdth_internal_cmd(hanum,CACHESERVICE,GDT_X_INFO,hdrive,0,0)
            && ha->info2 != 0) {
            ha->hdr[hdrive].size = ((ulong64)ha->info2 << 32) | ha->info;
        }
    }
    TRACE2(("gdth_search_dr() cdr. %d size %d hds %d scs %d\n",
            hdrive,ha->hdr[hdrive].size,drv_hds,drv_secs));

    /* get informations about device */
    if (gdth_internal_cmd(hanum,CACHESERVICE,GDT_DEVTYPE,hdrive,0,0)) {
        TRACE2(("gdth_search_dr() cache drive %d devtype %d\n",
                hdrive,ha->info));
        ha->hdr[hdrive].devtype = (ushort)ha->info;
    }

    /* cluster info */
    if (gdth_internal_cmd(hanum,CACHESERVICE,GDT_CLUST_INFO,hdrive,0,0)) {
        TRACE2(("gdth_search_dr() cache drive %d cluster info %d\n",
                hdrive,ha->info));
        if (!shared_access)
            ha->hdr[hdrive].cluster_type = (unchar)ha->info;
    }

    /* R/W attributes */
    if (gdth_internal_cmd(hanum,CACHESERVICE,GDT_RW_ATTRIBS,hdrive,0,0)) {
        TRACE2(("gdth_search_dr() cache drive %d r/w attrib. %d\n",
                hdrive,ha->info));
        ha->hdr[hdrive].rw_attribs = (unchar)ha->info;
    }

    return 1;
}


/* command queueing/sending functions */

static void gdth_putq(int hanum,Scsi_Cmnd *scp,unchar priority)
{
    register gdth_ha_str *ha;
    register Scsi_Cmnd *pscp;
    register Scsi_Cmnd *nscp;
    ulong flags;
    unchar b, t;

    TRACE(("gdth_putq() priority %d\n",priority));
    ha = HADATA(gdth_ctr_tab[hanum]);
    spin_lock_irqsave(&ha->smp_lock, flags);

    if (scp->done != gdth_scsi_done) {
        scp->SCp.this_residual = (int)priority;
        b = virt_ctr ? NUMDATA(scp->device->host)->busnum:scp->device->channel;
        t = scp->device->id;
        if (priority >= DEFAULT_PRI) {
            if ((b != ha->virt_bus && ha->raw[BUS_L2P(ha,b)].lock) ||
                (b==ha->virt_bus && t<MAX_HDRIVES && ha->hdr[t].lock)) {
                TRACE2(("gdth_putq(): locked IO ->update_timeout()\n"));
                scp->SCp.buffers_residual = gdth_update_timeout(hanum, scp, 0);
            }
        }
    }

    if (ha->req_first==NULL) {
        ha->req_first = scp;                    /* queue was empty */
        scp->SCp.ptr = NULL;
    } else {                                    /* queue not empty */
        pscp = ha->req_first;
        nscp = (Scsi_Cmnd *)pscp->SCp.ptr;
        /* priority: 0-highest,..,0xff-lowest */
        while (nscp && (unchar)nscp->SCp.this_residual <= priority) {
            pscp = nscp;
            nscp = (Scsi_Cmnd *)pscp->SCp.ptr;
        }
        pscp->SCp.ptr = (char *)scp;
        scp->SCp.ptr  = (char *)nscp;
    }
    spin_unlock_irqrestore(&ha->smp_lock, flags);

#ifdef GDTH_STATISTICS
    flags = 0;
    for (nscp=ha->req_first; nscp; nscp=(Scsi_Cmnd*)nscp->SCp.ptr)
        ++flags;
    if (max_rq < flags) {
        max_rq = flags;
        TRACE3(("GDT: max_rq = %d\n",(ushort)max_rq));
    }
#endif
}

static void gdth_next(int hanum)
{
    register gdth_ha_str *ha;
    register Scsi_Cmnd *pscp;
    register Scsi_Cmnd *nscp;
    unchar b, t, l, firsttime;
    unchar this_cmd, next_cmd;
    ulong flags = 0;
    int cmd_index;

    TRACE(("gdth_next() hanum %d\n",hanum));
    ha = HADATA(gdth_ctr_tab[hanum]);
    if (!gdth_polling) 
        spin_lock_irqsave(&ha->smp_lock, flags);

    ha->cmd_cnt = ha->cmd_offs_dpmem = 0;
    this_cmd = firsttime = TRUE;
    next_cmd = gdth_polling ? FALSE:TRUE;
    cmd_index = 0;

    for (nscp = pscp = ha->req_first; nscp; nscp = (Scsi_Cmnd *)nscp->SCp.ptr) {
        if (nscp != pscp && nscp != (Scsi_Cmnd *)pscp->SCp.ptr)
            pscp = (Scsi_Cmnd *)pscp->SCp.ptr;
        if (nscp->done != gdth_scsi_done) {
            b = virt_ctr ?
                NUMDATA(nscp->device->host)->busnum : nscp->device->channel;
            t = nscp->device->id;
            l = nscp->device->lun;
            if (nscp->SCp.this_residual >= DEFAULT_PRI) {
                if ((b != ha->virt_bus && ha->raw[BUS_L2P(ha,b)].lock) ||
                    (b == ha->virt_bus && t < MAX_HDRIVES && ha->hdr[t].lock))
                    continue;
            }
        } else
            b = t = l = 0;

        if (firsttime) {
            if (gdth_test_busy(hanum)) {        /* controller busy ? */
                TRACE(("gdth_next() controller %d busy !\n",hanum));
                if (!gdth_polling) {
                    spin_unlock_irqrestore(&ha->smp_lock, flags);
                    return;
                }
                while (gdth_test_busy(hanum))
                    gdth_delay(1);
            }   
            firsttime = FALSE;
        }

        if (nscp->done != gdth_scsi_done) {
        if (nscp->SCp.phase == -1) {
            nscp->SCp.phase = CACHESERVICE;           /* default: cache svc. */ 
            if (nscp->cmnd[0] == TEST_UNIT_READY) {
                TRACE2(("TEST_UNIT_READY Bus %d Id %d LUN %d\n", 
                        b, t, l));
                /* TEST_UNIT_READY -> set scan mode */
                if ((ha->scan_mode & 0x0f) == 0) {
                    if (b == 0 && t == 0 && l == 0) {
                        ha->scan_mode |= 1;
                        TRACE2(("Scan mode: 0x%x\n", ha->scan_mode));
                    }
                } else if ((ha->scan_mode & 0x0f) == 1) {
                    if (b == 0 && ((t == 0 && l == 1) ||
                         (t == 1 && l == 0))) {
                        nscp->SCp.sent_command = GDT_SCAN_START;
                        nscp->SCp.phase = ((ha->scan_mode & 0x10 ? 1:0) << 8) 
                            | SCSIRAWSERVICE;
                        ha->scan_mode = 0x12;
                        TRACE2(("Scan mode: 0x%x (SCAN_START)\n", 
                                ha->scan_mode));
                    } else {
                        ha->scan_mode &= 0x10;
                        TRACE2(("Scan mode: 0x%x\n", ha->scan_mode));
                    }                   
                } else if (ha->scan_mode == 0x12) {
                    if (b == ha->bus_cnt && t == ha->tid_cnt-1) {
                        nscp->SCp.phase = SCSIRAWSERVICE;
                        nscp->SCp.sent_command = GDT_SCAN_END;
                        ha->scan_mode &= 0x10;
                        TRACE2(("Scan mode: 0x%x (SCAN_END)\n", 
                                ha->scan_mode));
                    }
                }
            }
            if (b == ha->virt_bus && nscp->cmnd[0] != INQUIRY &&
                nscp->cmnd[0] != READ_CAPACITY && nscp->cmnd[0] != MODE_SENSE &&
                (ha->hdr[t].cluster_type & CLUSTER_DRIVE)) {
                /* always GDT_CLUST_INFO! */
                nscp->SCp.sent_command = GDT_CLUST_INFO;
            }
        }
        }

        if (nscp->SCp.sent_command != -1) {
            if ((nscp->SCp.phase & 0xff) == CACHESERVICE) {
                if (!(cmd_index=gdth_fill_cache_cmd(hanum,nscp,t)))
                    this_cmd = FALSE;
                next_cmd = FALSE;
            } else if ((nscp->SCp.phase & 0xff) == SCSIRAWSERVICE) {
                if (!(cmd_index=gdth_fill_raw_cmd(hanum,nscp,BUS_L2P(ha,b))))
                    this_cmd = FALSE;
                next_cmd = FALSE;
            } else {
                memset((char*)nscp->sense_buffer,0,16);
                nscp->sense_buffer[0] = 0x70;
                nscp->sense_buffer[2] = NOT_READY;
                nscp->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
                if (!nscp->SCp.have_data_in)
                    nscp->SCp.have_data_in++;
                else
                    nscp->scsi_done(nscp);
            }
        } else if (nscp->done == gdth_scsi_done) {
            if (!(cmd_index=gdth_special_cmd(hanum,nscp)))
                this_cmd = FALSE;
            next_cmd = FALSE;
        } else if (b != ha->virt_bus) {
            if (ha->raw[BUS_L2P(ha,b)].io_cnt[t] >= GDTH_MAX_RAW ||
                !(cmd_index=gdth_fill_raw_cmd(hanum,nscp,BUS_L2P(ha,b)))) 
                this_cmd = FALSE;
            else 
                ha->raw[BUS_L2P(ha,b)].io_cnt[t]++;
        } else if (t >= MAX_HDRIVES || !ha->hdr[t].present || l != 0) {
            TRACE2(("Command 0x%x to bus %d id %d lun %d -> IGNORE\n",
                    nscp->cmnd[0], b, t, l));
            nscp->result = DID_BAD_TARGET << 16;
            if (!nscp->SCp.have_data_in)
                nscp->SCp.have_data_in++;
            else
                nscp->scsi_done(nscp);
        } else {
            switch (nscp->cmnd[0]) {
              case TEST_UNIT_READY:
              case INQUIRY:
              case REQUEST_SENSE:
              case READ_CAPACITY:
              case VERIFY:
              case START_STOP:
              case MODE_SENSE:
              case SERVICE_ACTION_IN:
                TRACE(("cache cmd %x/%x/%x/%x/%x/%x\n",nscp->cmnd[0],
                       nscp->cmnd[1],nscp->cmnd[2],nscp->cmnd[3],
                       nscp->cmnd[4],nscp->cmnd[5]));
                if (ha->hdr[t].media_changed && nscp->cmnd[0] != INQUIRY) {
                    /* return UNIT_ATTENTION */
                    TRACE2(("cmd 0x%x target %d: UNIT_ATTENTION\n",
                             nscp->cmnd[0], t));
                    ha->hdr[t].media_changed = FALSE;
                    memset((char*)nscp->sense_buffer,0,16);
                    nscp->sense_buffer[0] = 0x70;
                    nscp->sense_buffer[2] = UNIT_ATTENTION;
                    nscp->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
                    if (!nscp->SCp.have_data_in)
                        nscp->SCp.have_data_in++;
                    else
                        nscp->scsi_done(nscp);
                } else if (gdth_internal_cache_cmd(hanum,nscp))
                    nscp->scsi_done(nscp);
                break;

              case ALLOW_MEDIUM_REMOVAL:
                TRACE(("cache cmd %x/%x/%x/%x/%x/%x\n",nscp->cmnd[0],
                       nscp->cmnd[1],nscp->cmnd[2],nscp->cmnd[3],
                       nscp->cmnd[4],nscp->cmnd[5]));
                if ( (nscp->cmnd[4]&1) && !(ha->hdr[t].devtype&1) ) {
                    TRACE(("Prevent r. nonremov. drive->do nothing\n"));
                    nscp->result = DID_OK << 16;
                    nscp->sense_buffer[0] = 0;
                    if (!nscp->SCp.have_data_in)
                        nscp->SCp.have_data_in++;
                    else
                        nscp->scsi_done(nscp);
                } else {
                    nscp->cmnd[3] = (ha->hdr[t].devtype&1) ? 1:0;
                    TRACE(("Prevent/allow r. %d rem. drive %d\n",
                           nscp->cmnd[4],nscp->cmnd[3]));
                    if (!(cmd_index=gdth_fill_cache_cmd(hanum,nscp,t)))
                        this_cmd = FALSE;
                }
                break;
                
              case RESERVE:
              case RELEASE:
                TRACE2(("cache cmd %s\n",nscp->cmnd[0] == RESERVE ?
                        "RESERVE" : "RELEASE"));
                if (!(cmd_index=gdth_fill_cache_cmd(hanum,nscp,t)))
                    this_cmd = FALSE;
                break;
                
              case READ_6:
              case WRITE_6:
              case READ_10:
              case WRITE_10:
              case READ_16:
              case WRITE_16:
                if (ha->hdr[t].media_changed) {
                    /* return UNIT_ATTENTION */
                    TRACE2(("cmd 0x%x target %d: UNIT_ATTENTION\n",
                             nscp->cmnd[0], t));
                    ha->hdr[t].media_changed = FALSE;
                    memset((char*)nscp->sense_buffer,0,16);
                    nscp->sense_buffer[0] = 0x70;
                    nscp->sense_buffer[2] = UNIT_ATTENTION;
                    nscp->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
                    if (!nscp->SCp.have_data_in)
                        nscp->SCp.have_data_in++;
                    else
                        nscp->scsi_done(nscp);
                } else if (!(cmd_index=gdth_fill_cache_cmd(hanum,nscp,t)))
                    this_cmd = FALSE;
                break;

              default:
                TRACE2(("cache cmd %x/%x/%x/%x/%x/%x unknown\n",nscp->cmnd[0],
                        nscp->cmnd[1],nscp->cmnd[2],nscp->cmnd[3],
                        nscp->cmnd[4],nscp->cmnd[5]));
                printk("GDT-HA %d: Unknown SCSI command 0x%x to cache service !\n",
                       hanum, nscp->cmnd[0]);
                nscp->result = DID_ABORT << 16;
                if (!nscp->SCp.have_data_in)
                    nscp->SCp.have_data_in++;
                else
                    nscp->scsi_done(nscp);
                break;
            }
        }

        if (!this_cmd)
            break;
        if (nscp == ha->req_first)
            ha->req_first = pscp = (Scsi_Cmnd *)nscp->SCp.ptr;
        else
            pscp->SCp.ptr = nscp->SCp.ptr;
        if (!next_cmd)
            break;
    }

    if (ha->cmd_cnt > 0) {
        gdth_release_event(hanum);
    }

    if (!gdth_polling) 
        spin_unlock_irqrestore(&ha->smp_lock, flags);

    if (gdth_polling && ha->cmd_cnt > 0) {
        if (!gdth_wait(hanum,cmd_index,POLL_TIMEOUT))
            printk("GDT-HA %d: Command %d timed out !\n",
                   hanum,cmd_index);
    }
}
   
static void gdth_copy_internal_data(int hanum,Scsi_Cmnd *scp,
                                    char *buffer,ushort count)
{
    ushort cpcount,i;
    ushort cpsum,cpnow;
    struct scatterlist *sl;
    gdth_ha_str *ha;
    char *address;

    cpcount = count<=(ushort)scp->request_bufflen ? count:(ushort)scp->request_bufflen;
    ha = HADATA(gdth_ctr_tab[hanum]);

    if (scp->use_sg) {
        sl = (struct scatterlist *)scp->request_buffer;
        for (i=0,cpsum=0; i<scp->use_sg; ++i,++sl) {
            unsigned long flags;
            cpnow = (ushort)sl->length;
            TRACE(("copy_internal() now %d sum %d count %d %d\n",
                          cpnow,cpsum,cpcount,(ushort)scp->bufflen));
            if (cpsum+cpnow > cpcount) 
                cpnow = cpcount - cpsum;
            cpsum += cpnow;
            if (!sl->page) {
                printk("GDT-HA %d: invalid sc/gt element in gdth_copy_internal_data()\n",
                       hanum);
                return;
            }
            local_irq_save(flags);
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
            address = kmap_atomic(sl->page, KM_BIO_SRC_IRQ) + sl->offset;
            memcpy(address,buffer,cpnow);
            flush_dcache_page(sl->page);
            kunmap_atomic(address, KM_BIO_SRC_IRQ);
#else
            address = kmap_atomic(sl->page, KM_BH_IRQ) + sl->offset;
            memcpy(address,buffer,cpnow);
            flush_dcache_page(sl->page);
            kunmap_atomic(address, KM_BH_IRQ);
#endif
            local_irq_restore(flags);
            if (cpsum == cpcount)
                break;
            buffer += cpnow;
        }
    } else {
        TRACE(("copy_internal() count %d\n",cpcount));
        memcpy((char*)scp->request_buffer,buffer,cpcount);
    }
}

static int gdth_internal_cache_cmd(int hanum,Scsi_Cmnd *scp)
{
    register gdth_ha_str *ha;
    unchar t;
    gdth_inq_data inq;
    gdth_rdcap_data rdc;
    gdth_sense_data sd;
    gdth_modep_data mpd;

    ha = HADATA(gdth_ctr_tab[hanum]);
    t  = scp->device->id;
    TRACE(("gdth_internal_cache_cmd() cmd 0x%x hdrive %d\n",
           scp->cmnd[0],t));

    scp->result = DID_OK << 16;
    scp->sense_buffer[0] = 0;

    switch (scp->cmnd[0]) {
      case TEST_UNIT_READY:
      case VERIFY:
      case START_STOP:
        TRACE2(("Test/Verify/Start hdrive %d\n",t));
        break;

      case INQUIRY:
        TRACE2(("Inquiry hdrive %d devtype %d\n",
                t,ha->hdr[t].devtype));
        inq.type_qual = (ha->hdr[t].devtype&4) ? TYPE_ROM:TYPE_DISK;
        /* you can here set all disks to removable, if you want to do
           a flush using the ALLOW_MEDIUM_REMOVAL command */
        inq.modif_rmb = 0x00;
        if ((ha->hdr[t].devtype & 1) ||
            (ha->hdr[t].cluster_type & CLUSTER_DRIVE))
            inq.modif_rmb = 0x80;
        inq.version   = 2;
        inq.resp_aenc = 2;
        inq.add_length= 32;
        strcpy(inq.vendor,ha->oem_name);
        sprintf(inq.product,"Host Drive  #%02d",t);
        strcpy(inq.revision,"   ");
        gdth_copy_internal_data(hanum,scp,(char*)&inq,sizeof(gdth_inq_data));
        break;

      case REQUEST_SENSE:
        TRACE2(("Request sense hdrive %d\n",t));
        sd.errorcode = 0x70;
        sd.segno     = 0x00;
        sd.key       = NO_SENSE;
        sd.info      = 0;
        sd.add_length= 0;
        gdth_copy_internal_data(hanum,scp,(char*)&sd,sizeof(gdth_sense_data));
        break;

      case MODE_SENSE:
        TRACE2(("Mode sense hdrive %d\n",t));
        memset((char*)&mpd,0,sizeof(gdth_modep_data));
        mpd.hd.data_length = sizeof(gdth_modep_data);
        mpd.hd.dev_par     = (ha->hdr[t].devtype&2) ? 0x80:0;
        mpd.hd.bd_length   = sizeof(mpd.bd);
        mpd.bd.block_length[0] = (SECTOR_SIZE & 0x00ff0000) >> 16;
        mpd.bd.block_length[1] = (SECTOR_SIZE & 0x0000ff00) >> 8;
        mpd.bd.block_length[2] = (SECTOR_SIZE & 0x000000ff);
        gdth_copy_internal_data(hanum,scp,(char*)&mpd,sizeof(gdth_modep_data));
        break;

      case READ_CAPACITY:
        TRACE2(("Read capacity hdrive %d\n",t));
        if (ha->hdr[t].size > (ulong64)0xffffffff)
            rdc.last_block_no = 0xffffffff;
        else
            rdc.last_block_no = cpu_to_be32(ha->hdr[t].size-1);
        rdc.block_length  = cpu_to_be32(SECTOR_SIZE);
        gdth_copy_internal_data(hanum,scp,(char*)&rdc,sizeof(gdth_rdcap_data));
        break;

      case SERVICE_ACTION_IN:
        if ((scp->cmnd[1] & 0x1f) == SAI_READ_CAPACITY_16 &&
            (ha->cache_feat & GDT_64BIT)) {
            gdth_rdcap16_data rdc16;

            TRACE2(("Read capacity (16) hdrive %d\n",t));
            rdc16.last_block_no = cpu_to_be64(ha->hdr[t].size-1);
            rdc16.block_length  = cpu_to_be32(SECTOR_SIZE);
            gdth_copy_internal_data(hanum,scp,(char*)&rdc16,sizeof(gdth_rdcap16_data));
        } else { 
            scp->result = DID_ABORT << 16;
        }
        break;

      default:
        TRACE2(("Internal cache cmd 0x%x unknown\n",scp->cmnd[0]));
        break;
    }

    if (!scp->SCp.have_data_in)
        scp->SCp.have_data_in++;
    else 
        return 1;

    return 0;
}
    
static int gdth_fill_cache_cmd(int hanum,Scsi_Cmnd *scp,ushort hdrive)
{
    register gdth_ha_str *ha;
    register gdth_cmd_str *cmdp;
    struct scatterlist *sl;
    ulong32 cnt, blockcnt;
    ulong64 no, blockno;
    dma_addr_t phys_addr;
    int i, cmd_index, read_write, sgcnt, mode64;
    struct page *page;
    ulong offset;

    ha = HADATA(gdth_ctr_tab[hanum]);
    cmdp = ha->pccb;
    TRACE(("gdth_fill_cache_cmd() cmd 0x%x cmdsize %d hdrive %d\n",
                 scp->cmnd[0],scp->cmd_len,hdrive));

    if (ha->type==GDT_EISA && ha->cmd_cnt>0) 
        return 0;

    mode64 = (ha->cache_feat & GDT_64BIT) ? TRUE : FALSE;
    /* test for READ_16, WRITE_16 if !mode64 ? ---
       not required, should not occur due to error return on 
       READ_CAPACITY_16 */

    cmdp->Service = CACHESERVICE;
    cmdp->RequestBuffer = scp;
    /* search free command index */
    if (!(cmd_index=gdth_get_cmd_index(hanum))) {
        TRACE(("GDT: No free command index found\n"));
        return 0;
    }
    /* if it's the first command, set command semaphore */
    if (ha->cmd_cnt == 0)
        gdth_set_sema0(hanum);

    /* fill command */
    read_write = 0;
    if (scp->SCp.sent_command != -1) 
        cmdp->OpCode = scp->SCp.sent_command;   /* special cache cmd. */
    else if (scp->cmnd[0] == RESERVE) 
        cmdp->OpCode = GDT_RESERVE_DRV;
    else if (scp->cmnd[0] == RELEASE)
        cmdp->OpCode = GDT_RELEASE_DRV;
    else if (scp->cmnd[0] == ALLOW_MEDIUM_REMOVAL) {
        if (scp->cmnd[4] & 1)                   /* prevent ? */
            cmdp->OpCode = GDT_MOUNT;
        else if (scp->cmnd[3] & 1)              /* removable drive ? */
            cmdp->OpCode = GDT_UNMOUNT;
        else
            cmdp->OpCode = GDT_FLUSH;
    } else if (scp->cmnd[0] == WRITE_6 || scp->cmnd[0] == WRITE_10 ||
               scp->cmnd[0] == WRITE_12 || scp->cmnd[0] == WRITE_16
    ) {
        read_write = 1;
        if (gdth_write_through || ((ha->hdr[hdrive].rw_attribs & 1) && 
                                   (ha->cache_feat & GDT_WR_THROUGH)))
            cmdp->OpCode = GDT_WRITE_THR;
        else
            cmdp->OpCode = GDT_WRITE;
    } else {
        read_write = 2;
        cmdp->OpCode = GDT_READ;
    }

    cmdp->BoardNode = LOCALBOARD;
    if (mode64) {
        cmdp->u.cache64.DeviceNo = hdrive;
        cmdp->u.cache64.BlockNo  = 1;
        cmdp->u.cache64.sg_canz  = 0;
    } else {
        cmdp->u.cache.DeviceNo = hdrive;
        cmdp->u.cache.BlockNo  = 1;
        cmdp->u.cache.sg_canz  = 0;
    }

    if (read_write) {
        if (scp->cmd_len == 16) {
            memcpy(&no, &scp->cmnd[2], sizeof(ulong64));
            blockno = be64_to_cpu(no);
            memcpy(&cnt, &scp->cmnd[10], sizeof(ulong32));
            blockcnt = be32_to_cpu(cnt);
        } else if (scp->cmd_len == 10) {
            memcpy(&no, &scp->cmnd[2], sizeof(ulong32));
            blockno = be32_to_cpu(no);
            memcpy(&cnt, &scp->cmnd[7], sizeof(ushort));
            blockcnt = be16_to_cpu(cnt);
        } else {
            memcpy(&no, &scp->cmnd[0], sizeof(ulong32));
            blockno = be32_to_cpu(no) & 0x001fffffUL;
            blockcnt= scp->cmnd[4]==0 ? 0x100 : scp->cmnd[4];
        }
        if (mode64) {
            cmdp->u.cache64.BlockNo = blockno;
            cmdp->u.cache64.BlockCnt = blockcnt;
        } else {
            cmdp->u.cache.BlockNo = (ulong32)blockno;
            cmdp->u.cache.BlockCnt = blockcnt;
        }

        if (scp->use_sg) {
            sl = (struct scatterlist *)scp->request_buffer;
            sgcnt = scp->use_sg;
            scp->SCp.Status = GDTH_MAP_SG;
            scp->SCp.Message = (read_write == 1 ? 
                PCI_DMA_TODEVICE : PCI_DMA_FROMDEVICE);   
            sgcnt = pci_map_sg(ha->pdev,sl,scp->use_sg,scp->SCp.Message);
            if (mode64) {
                cmdp->u.cache64.DestAddr= (ulong64)-1;
                cmdp->u.cache64.sg_canz = sgcnt;
                for (i=0; i<sgcnt; ++i,++sl) {
                    cmdp->u.cache64.sg_lst[i].sg_ptr = sg_dma_address(sl);
#ifdef GDTH_DMA_STATISTICS
                    if (cmdp->u.cache64.sg_lst[i].sg_ptr > (ulong64)0xffffffff)
                        ha->dma64_cnt++;
                    else
                        ha->dma32_cnt++;
#endif
                    cmdp->u.cache64.sg_lst[i].sg_len = sg_dma_len(sl);
                }
            } else {
                cmdp->u.cache.DestAddr= 0xffffffff;
                cmdp->u.cache.sg_canz = sgcnt;
                for (i=0; i<sgcnt; ++i,++sl) {
                    cmdp->u.cache.sg_lst[i].sg_ptr = sg_dma_address(sl);
#ifdef GDTH_DMA_STATISTICS
                    ha->dma32_cnt++;
#endif
                    cmdp->u.cache.sg_lst[i].sg_len = sg_dma_len(sl);
                }
            }

#ifdef GDTH_STATISTICS
            if (max_sg < (ulong32)sgcnt) {
                max_sg = (ulong32)sgcnt;
                TRACE3(("GDT: max_sg = %d\n",max_sg));
            }
#endif

        } else if (scp->request_bufflen) {
            scp->SCp.Status = GDTH_MAP_SINGLE;
            scp->SCp.Message = (read_write == 1 ? 
                PCI_DMA_TODEVICE : PCI_DMA_FROMDEVICE);
            page = virt_to_page(scp->request_buffer);
            offset = (ulong)scp->request_buffer & ~PAGE_MASK;
            phys_addr = pci_map_page(ha->pdev,page,offset,
                                     scp->request_bufflen,scp->SCp.Message);
            scp->SCp.dma_handle = phys_addr;
            if (mode64) {
                if (ha->cache_feat & SCATTER_GATHER) {
                    cmdp->u.cache64.DestAddr = (ulong64)-1;
                    cmdp->u.cache64.sg_canz = 1;
                    cmdp->u.cache64.sg_lst[0].sg_ptr = phys_addr;
                    cmdp->u.cache64.sg_lst[0].sg_len = scp->request_bufflen;
                    cmdp->u.cache64.sg_lst[1].sg_len = 0;
                } else {
                    cmdp->u.cache64.DestAddr  = phys_addr;
                    cmdp->u.cache64.sg_canz= 0;
                }
            } else {
                if (ha->cache_feat & SCATTER_GATHER) {
                    cmdp->u.cache.DestAddr = 0xffffffff;
                    cmdp->u.cache.sg_canz = 1;
                    cmdp->u.cache.sg_lst[0].sg_ptr = phys_addr;
                    cmdp->u.cache.sg_lst[0].sg_len = scp->request_bufflen;
                    cmdp->u.cache.sg_lst[1].sg_len = 0;
                } else {
                    cmdp->u.cache.DestAddr  = phys_addr;
                    cmdp->u.cache.sg_canz= 0;
                }
            }
        }
    }
    /* evaluate command size, check space */
    if (mode64) {
        TRACE(("cache cmd: addr. %x sganz %x sgptr0 %x sglen0 %x\n",
               cmdp->u.cache64.DestAddr,cmdp->u.cache64.sg_canz,
               cmdp->u.cache64.sg_lst[0].sg_ptr,
               cmdp->u.cache64.sg_lst[0].sg_len));
        TRACE(("cache cmd: cmd %d blockno. %d, blockcnt %d\n",
               cmdp->OpCode,cmdp->u.cache64.BlockNo,cmdp->u.cache64.BlockCnt));
        ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.cache64.sg_lst) +
            (ushort)cmdp->u.cache64.sg_canz * sizeof(gdth_sg64_str);
    } else {
        TRACE(("cache cmd: addr. %x sganz %x sgptr0 %x sglen0 %x\n",
               cmdp->u.cache.DestAddr,cmdp->u.cache.sg_canz,
               cmdp->u.cache.sg_lst[0].sg_ptr,
               cmdp->u.cache.sg_lst[0].sg_len));
        TRACE(("cache cmd: cmd %d blockno. %d, blockcnt %d\n",
               cmdp->OpCode,cmdp->u.cache.BlockNo,cmdp->u.cache.BlockCnt));
        ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.cache.sg_lst) +
            (ushort)cmdp->u.cache.sg_canz * sizeof(gdth_sg_str);
    }
    if (ha->cmd_len & 3)
        ha->cmd_len += (4 - (ha->cmd_len & 3));

    if (ha->cmd_cnt > 0) {
        if ((ha->cmd_offs_dpmem + ha->cmd_len + DPMEM_COMMAND_OFFSET) >
            ha->ic_all_size) {
            TRACE2(("gdth_fill_cache() DPMEM overflow\n"));
            ha->cmd_tab[cmd_index-2].cmnd = UNUSED_CMND;
            return 0;
        }
    }

    /* copy command */
    gdth_copy_command(hanum);
    return cmd_index;
}

static int gdth_fill_raw_cmd(int hanum,Scsi_Cmnd *scp,unchar b)
{
    register gdth_ha_str *ha;
    register gdth_cmd_str *cmdp;
    struct scatterlist *sl;
    ushort i;
    dma_addr_t phys_addr, sense_paddr;
    int cmd_index, sgcnt, mode64;
    unchar t,l;
    struct page *page;
    ulong offset;

    ha = HADATA(gdth_ctr_tab[hanum]);
    t = scp->device->id;
    l = scp->device->lun;
    cmdp = ha->pccb;
    TRACE(("gdth_fill_raw_cmd() cmd 0x%x bus %d ID %d LUN %d\n",
           scp->cmnd[0],b,t,l));

    if (ha->type==GDT_EISA && ha->cmd_cnt>0) 
        return 0;

    mode64 = (ha->raw_feat & GDT_64BIT) ? TRUE : FALSE;

    cmdp->Service = SCSIRAWSERVICE;
    cmdp->RequestBuffer = scp;
    /* search free command index */
    if (!(cmd_index=gdth_get_cmd_index(hanum))) {
        TRACE(("GDT: No free command index found\n"));
        return 0;
    }
    /* if it's the first command, set command semaphore */
    if (ha->cmd_cnt == 0)
        gdth_set_sema0(hanum);

    /* fill command */  
    if (scp->SCp.sent_command != -1) {
        cmdp->OpCode           = scp->SCp.sent_command; /* special raw cmd. */
        cmdp->BoardNode        = LOCALBOARD;
        if (mode64) {
            cmdp->u.raw64.direction = (scp->SCp.phase >> 8);
            TRACE2(("special raw cmd 0x%x param 0x%x\n", 
                    cmdp->OpCode, cmdp->u.raw64.direction));
            /* evaluate command size */
            ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.raw64.sg_lst);
        } else {
            cmdp->u.raw.direction  = (scp->SCp.phase >> 8);
            TRACE2(("special raw cmd 0x%x param 0x%x\n", 
                    cmdp->OpCode, cmdp->u.raw.direction));
            /* evaluate command size */
            ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.raw.sg_lst);
        }

    } else {
        page = virt_to_page(scp->sense_buffer);
        offset = (ulong)scp->sense_buffer & ~PAGE_MASK;
        sense_paddr = pci_map_page(ha->pdev,page,offset,
                                   16,PCI_DMA_FROMDEVICE);
        *(ulong32 *)&scp->SCp.buffer = (ulong32)sense_paddr;
        /* high part, if 64bit */
        *(ulong32 *)&scp->host_scribble = (ulong32)((ulong64)sense_paddr >> 32);
        cmdp->OpCode           = GDT_WRITE;             /* always */
        cmdp->BoardNode        = LOCALBOARD;
        if (mode64) { 
            cmdp->u.raw64.reserved   = 0;
            cmdp->u.raw64.mdisc_time = 0;
            cmdp->u.raw64.mcon_time  = 0;
            cmdp->u.raw64.clen       = scp->cmd_len;
            cmdp->u.raw64.target     = t;
            cmdp->u.raw64.lun        = l;
            cmdp->u.raw64.bus        = b;
            cmdp->u.raw64.priority   = 0;
            cmdp->u.raw64.sdlen      = scp->request_bufflen;
            cmdp->u.raw64.sense_len  = 16;
            cmdp->u.raw64.sense_data = sense_paddr;
            cmdp->u.raw64.direction  = 
                gdth_direction_tab[scp->cmnd[0]]==DOU ? GDTH_DATA_OUT:GDTH_DATA_IN;
            memcpy(cmdp->u.raw64.cmd,scp->cmnd,16);
        } else {
            cmdp->u.raw.reserved   = 0;
            cmdp->u.raw.mdisc_time = 0;
            cmdp->u.raw.mcon_time  = 0;
            cmdp->u.raw.clen       = scp->cmd_len;
            cmdp->u.raw.target     = t;
            cmdp->u.raw.lun        = l;
            cmdp->u.raw.bus        = b;
            cmdp->u.raw.priority   = 0;
            cmdp->u.raw.link_p     = 0;
            cmdp->u.raw.sdlen      = scp->request_bufflen;
            cmdp->u.raw.sense_len  = 16;
            cmdp->u.raw.sense_data = sense_paddr;
            cmdp->u.raw.direction  = 
                gdth_direction_tab[scp->cmnd[0]]==DOU ? GDTH_DATA_OUT:GDTH_DATA_IN;
            memcpy(cmdp->u.raw.cmd,scp->cmnd,12);
        }

        if (scp->use_sg) {
            sl = (struct scatterlist *)scp->request_buffer;
            sgcnt = scp->use_sg;
            scp->SCp.Status = GDTH_MAP_SG;
            scp->SCp.Message = PCI_DMA_BIDIRECTIONAL; 
            sgcnt = pci_map_sg(ha->pdev,sl,scp->use_sg,scp->SCp.Message);
            if (mode64) {
                cmdp->u.raw64.sdata = (ulong64)-1;
                cmdp->u.raw64.sg_ranz = sgcnt;
                for (i=0; i<sgcnt; ++i,++sl) {
                    cmdp->u.raw64.sg_lst[i].sg_ptr = sg_dma_address(sl);
#ifdef GDTH_DMA_STATISTICS
                    if (cmdp->u.raw64.sg_lst[i].sg_ptr > (ulong64)0xffffffff)
                        ha->dma64_cnt++;
                    else
                        ha->dma32_cnt++;
#endif
                    cmdp->u.raw64.sg_lst[i].sg_len = sg_dma_len(sl);
                }
            } else {
                cmdp->u.raw.sdata = 0xffffffff;
                cmdp->u.raw.sg_ranz = sgcnt;
                for (i=0; i<sgcnt; ++i,++sl) {
                    cmdp->u.raw.sg_lst[i].sg_ptr = sg_dma_address(sl);
#ifdef GDTH_DMA_STATISTICS
                    ha->dma32_cnt++;
#endif
                    cmdp->u.raw.sg_lst[i].sg_len = sg_dma_len(sl);
                }
            }

#ifdef GDTH_STATISTICS
            if (max_sg < sgcnt) {
                max_sg = sgcnt;
                TRACE3(("GDT: max_sg = %d\n",sgcnt));
            }
#endif

        } else if (scp->request_bufflen) {
            scp->SCp.Status = GDTH_MAP_SINGLE;
            scp->SCp.Message = PCI_DMA_BIDIRECTIONAL; 
            page = virt_to_page(scp->request_buffer);
            offset = (ulong)scp->request_buffer & ~PAGE_MASK;
            phys_addr = pci_map_page(ha->pdev,page,offset,
                                     scp->request_bufflen,scp->SCp.Message);
            scp->SCp.dma_handle = phys_addr;

            if (mode64) {
                if (ha->raw_feat & SCATTER_GATHER) {
                    cmdp->u.raw64.sdata  = (ulong64)-1;
                    cmdp->u.raw64.sg_ranz= 1;
                    cmdp->u.raw64.sg_lst[0].sg_ptr = phys_addr;
                    cmdp->u.raw64.sg_lst[0].sg_len = scp->request_bufflen;
                    cmdp->u.raw64.sg_lst[1].sg_len = 0;
                } else {
                    cmdp->u.raw64.sdata  = phys_addr;
                    cmdp->u.raw64.sg_ranz= 0;
                }
            } else {
                if (ha->raw_feat & SCATTER_GATHER) {
                    cmdp->u.raw.sdata  = 0xffffffff;
                    cmdp->u.raw.sg_ranz= 1;
                    cmdp->u.raw.sg_lst[0].sg_ptr = phys_addr;
                    cmdp->u.raw.sg_lst[0].sg_len = scp->request_bufflen;
                    cmdp->u.raw.sg_lst[1].sg_len = 0;
                } else {
                    cmdp->u.raw.sdata  = phys_addr;
                    cmdp->u.raw.sg_ranz= 0;
                }
            }
        }
        if (mode64) {
            TRACE(("raw cmd: addr. %x sganz %x sgptr0 %x sglen0 %x\n",
                   cmdp->u.raw64.sdata,cmdp->u.raw64.sg_ranz,
                   cmdp->u.raw64.sg_lst[0].sg_ptr,
                   cmdp->u.raw64.sg_lst[0].sg_len));
            /* evaluate command size */
            ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.raw64.sg_lst) +
                (ushort)cmdp->u.raw64.sg_ranz * sizeof(gdth_sg64_str);
        } else {
            TRACE(("raw cmd: addr. %x sganz %x sgptr0 %x sglen0 %x\n",
                   cmdp->u.raw.sdata,cmdp->u.raw.sg_ranz,
                   cmdp->u.raw.sg_lst[0].sg_ptr,
                   cmdp->u.raw.sg_lst[0].sg_len));
            /* evaluate command size */
            ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.raw.sg_lst) +
                (ushort)cmdp->u.raw.sg_ranz * sizeof(gdth_sg_str);
        }
    }
    /* check space */
    if (ha->cmd_len & 3)
        ha->cmd_len += (4 - (ha->cmd_len & 3));

    if (ha->cmd_cnt > 0) {
        if ((ha->cmd_offs_dpmem + ha->cmd_len + DPMEM_COMMAND_OFFSET) >
            ha->ic_all_size) {
            TRACE2(("gdth_fill_raw() DPMEM overflow\n"));
            ha->cmd_tab[cmd_index-2].cmnd = UNUSED_CMND;
            return 0;
        }
    }

    /* copy command */
    gdth_copy_command(hanum);
    return cmd_index;
}

static int gdth_special_cmd(int hanum,Scsi_Cmnd *scp)
{
    register gdth_ha_str *ha;
    register gdth_cmd_str *cmdp;
    int cmd_index;

    ha  = HADATA(gdth_ctr_tab[hanum]);
    cmdp= ha->pccb;
    TRACE2(("gdth_special_cmd(): "));

    if (ha->type==GDT_EISA && ha->cmd_cnt>0) 
        return 0;

    memcpy( cmdp, scp->request_buffer, sizeof(gdth_cmd_str));
    cmdp->RequestBuffer = scp;

    /* search free command index */
    if (!(cmd_index=gdth_get_cmd_index(hanum))) {
        TRACE(("GDT: No free command index found\n"));
        return 0;
    }

    /* if it's the first command, set command semaphore */
    if (ha->cmd_cnt == 0)
       gdth_set_sema0(hanum);

    /* evaluate command size, check space */
    if (cmdp->OpCode == GDT_IOCTL) {
        TRACE2(("IOCTL\n"));
        ha->cmd_len = 
            GDTOFFSOF(gdth_cmd_str,u.ioctl.p_param) + sizeof(ulong64);
    } else if (cmdp->Service == CACHESERVICE) {
        TRACE2(("cache command %d\n",cmdp->OpCode));
        if (ha->cache_feat & GDT_64BIT)
            ha->cmd_len = 
                GDTOFFSOF(gdth_cmd_str,u.cache64.sg_lst) + sizeof(gdth_sg64_str);
        else
            ha->cmd_len = 
                GDTOFFSOF(gdth_cmd_str,u.cache.sg_lst) + sizeof(gdth_sg_str);
    } else if (cmdp->Service == SCSIRAWSERVICE) {
        TRACE2(("raw command %d\n",cmdp->OpCode));
        if (ha->raw_feat & GDT_64BIT)
            ha->cmd_len = 
                GDTOFFSOF(gdth_cmd_str,u.raw64.sg_lst) + sizeof(gdth_sg64_str);
        else
            ha->cmd_len = 
                GDTOFFSOF(gdth_cmd_str,u.raw.sg_lst) + sizeof(gdth_sg_str);
    }

    if (ha->cmd_len & 3)
        ha->cmd_len += (4 - (ha->cmd_len & 3));

    if (ha->cmd_cnt > 0) {
        if ((ha->cmd_offs_dpmem + ha->cmd_len + DPMEM_COMMAND_OFFSET) >
            ha->ic_all_size) {
            TRACE2(("gdth_special_cmd() DPMEM overflow\n"));
            ha->cmd_tab[cmd_index-2].cmnd = UNUSED_CMND;
            return 0;
        }
    }

    /* copy command */
    gdth_copy_command(hanum);
    return cmd_index;
}    


/* Controller event handling functions */
static gdth_evt_str *gdth_store_event(gdth_ha_str *ha, ushort source, 
                                      ushort idx, gdth_evt_data *evt)
{
    gdth_evt_str *e;
    struct timeval tv;

    /* no GDTH_LOCK_HA() ! */
    TRACE2(("gdth_store_event() source %d idx %d\n", source, idx));
    if (source == 0)                        /* no source -> no event */
        return NULL;

    if (ebuffer[elastidx].event_source == source &&
        ebuffer[elastidx].event_idx == idx &&
        ((evt->size != 0 && ebuffer[elastidx].event_data.size != 0 &&
            !memcmp((char *)&ebuffer[elastidx].event_data.eu,
            (char *)&evt->eu, evt->size)) ||
        (evt->size == 0 && ebuffer[elastidx].event_data.size == 0 &&
            !strcmp((char *)&ebuffer[elastidx].event_data.event_string,
            (char *)&evt->event_string)))) { 
        e = &ebuffer[elastidx];
        do_gettimeofday(&tv);
        e->last_stamp = tv.tv_sec;
        ++e->same_count;
    } else {
        if (ebuffer[elastidx].event_source != 0) {  /* entry not free ? */
            ++elastidx;
            if (elastidx == MAX_EVENTS)
                elastidx = 0;
            if (elastidx == eoldidx) {              /* reached mark ? */
                ++eoldidx;
                if (eoldidx == MAX_EVENTS)
                    eoldidx = 0;
            }
        }
        e = &ebuffer[elastidx];
        e->event_source = source;
        e->event_idx = idx;
        do_gettimeofday(&tv);
        e->first_stamp = e->last_stamp = tv.tv_sec;
        e->same_count = 1;
        e->event_data = *evt;
        e->application = 0;
    }
    return e;
}

static int gdth_read_event(gdth_ha_str *ha, int handle, gdth_evt_str *estr)
{
    gdth_evt_str *e;
    int eindex;
    ulong flags;

    TRACE2(("gdth_read_event() handle %d\n", handle));
    spin_lock_irqsave(&ha->smp_lock, flags);
    if (handle == -1)
        eindex = eoldidx;
    else
        eindex = handle;
    estr->event_source = 0;

    if (eindex >= MAX_EVENTS) {
        spin_unlock_irqrestore(&ha->smp_lock, flags);
        return eindex;
    }
    e = &ebuffer[eindex];
    if (e->event_source != 0) {
        if (eindex != elastidx) {
            if (++eindex == MAX_EVENTS)
                eindex = 0;
        } else {
            eindex = -1;
        }
        memcpy(estr, e, sizeof(gdth_evt_str));
    }
    spin_unlock_irqrestore(&ha->smp_lock, flags);
    return eindex;
}

static void gdth_readapp_event(gdth_ha_str *ha,
                               unchar application, gdth_evt_str *estr)
{
    gdth_evt_str *e;
    int eindex;
    ulong flags;
    unchar found = FALSE;

    TRACE2(("gdth_readapp_event() app. %d\n", application));
    spin_lock_irqsave(&ha->smp_lock, flags);
    eindex = eoldidx;
    for (;;) {
        e = &ebuffer[eindex];
        if (e->event_source == 0)
            break;
        if ((e->application & application) == 0) {
            e->application |= application;
            found = TRUE;
            break;
        }
        if (eindex == elastidx)
            break;
        if (++eindex == MAX_EVENTS)
            eindex = 0;
    }
    if (found)
        memcpy(estr, e, sizeof(gdth_evt_str));
    else
        estr->event_source = 0;
    spin_unlock_irqrestore(&ha->smp_lock, flags);
}

static void gdth_clear_events(void)
{
    TRACE(("gdth_clear_events()"));

    eoldidx = elastidx = 0;
    ebuffer[0].event_source = 0;
}


/* SCSI interface functions */

static irqreturn_t gdth_interrupt(int irq,void *dev_id)
{
    gdth_ha_str *ha2 = (gdth_ha_str *)dev_id;
    register gdth_ha_str *ha;
    gdt6m_dpram_str __iomem *dp6m_ptr = NULL;
    gdt6_dpram_str __iomem *dp6_ptr;
    gdt2_dpram_str __iomem *dp2_ptr;
    Scsi_Cmnd *scp;
    int hanum, rval, i;
    unchar IStatus;
    ushort Service;
    ulong flags = 0;
#ifdef INT_COAL
    int coalesced = FALSE;
    int next = FALSE;
    gdth_coal_status *pcs = NULL;
    int act_int_coal = 0;       
#endif

    TRACE(("gdth_interrupt() IRQ %d\n",irq));

    /* if polling and not from gdth_wait() -> return */
    if (gdth_polling) {
        if (!gdth_from_wait) {
            return IRQ_HANDLED;
        }
    }

    if (!gdth_polling)
        spin_lock_irqsave(&ha2->smp_lock, flags);
    wait_index = 0;

    /* search controller */
    if ((hanum = gdth_get_status(&IStatus,irq)) == -1) {
        /* spurious interrupt */
        if (!gdth_polling)
            spin_unlock_irqrestore(&ha2->smp_lock, flags);
            return IRQ_HANDLED;
    }
    ha = HADATA(gdth_ctr_tab[hanum]);

#ifdef GDTH_STATISTICS
    ++act_ints;
#endif

#ifdef INT_COAL
    /* See if the fw is returning coalesced status */
    if (IStatus == COALINDEX) {
        /* Coalesced status.  Setup the initial status 
           buffer pointer and flags */
        pcs = ha->coal_stat;
        coalesced = TRUE;        
        next = TRUE;
    }

    do {
        if (coalesced) {
            /* For coalesced requests all status
               information is found in the status buffer */
            IStatus = (unchar)(pcs->status & 0xff);
        }
#endif
    
        if (ha->type == GDT_EISA) {
            if (IStatus & 0x80) {                       /* error flag */
                IStatus &= ~0x80;
                ha->status = inw(ha->bmic + MAILBOXREG+8);
                TRACE2(("gdth_interrupt() error %d/%d\n",IStatus,ha->status));
            } else                                      /* no error */
                ha->status = S_OK;
            ha->info = inl(ha->bmic + MAILBOXREG+12);
            ha->service = inw(ha->bmic + MAILBOXREG+10);
            ha->info2 = inl(ha->bmic + MAILBOXREG+4);

            outb(0xff, ha->bmic + EDOORREG);    /* acknowledge interrupt */
            outb(0x00, ha->bmic + SEMA1REG);    /* reset status semaphore */
        } else if (ha->type == GDT_ISA) {
            dp2_ptr = ha->brd;
            if (IStatus & 0x80) {                       /* error flag */
                IStatus &= ~0x80;
                ha->status = gdth_readw(&dp2_ptr->u.ic.Status);
                TRACE2(("gdth_interrupt() error %d/%d\n",IStatus,ha->status));
            } else                                      /* no error */
                ha->status = S_OK;
            ha->info = gdth_readl(&dp2_ptr->u.ic.Info[0]);
            ha->service = gdth_readw(&dp2_ptr->u.ic.Service);
            ha->info2 = gdth_readl(&dp2_ptr->u.ic.Info[1]);

            gdth_writeb(0xff, &dp2_ptr->io.irqdel); /* acknowledge interrupt */
            gdth_writeb(0, &dp2_ptr->u.ic.Cmd_Index);/* reset command index */
            gdth_writeb(0, &dp2_ptr->io.Sema1);     /* reset status semaphore */
        } else if (ha->type == GDT_PCI) {
            dp6_ptr = ha->brd;
            if (IStatus & 0x80) {                       /* error flag */
                IStatus &= ~0x80;
                ha->status = gdth_readw(&dp6_ptr->u.ic.Status);
                TRACE2(("gdth_interrupt() error %d/%d\n",IStatus,ha->status));
            } else                                      /* no error */
                ha->status = S_OK;
            ha->info = gdth_readl(&dp6_ptr->u.ic.Info[0]);
            ha->service = gdth_readw(&dp6_ptr->u.ic.Service);
            ha->info2 = gdth_readl(&dp6_ptr->u.ic.Info[1]);

            gdth_writeb(0xff, &dp6_ptr->io.irqdel); /* acknowledge interrupt */
            gdth_writeb(0, &dp6_ptr->u.ic.Cmd_Index);/* reset command index */
            gdth_writeb(0, &dp6_ptr->io.Sema1);     /* reset status semaphore */
        } else if (ha->type == GDT_PCINEW) {
            if (IStatus & 0x80) {                       /* error flag */
                IStatus &= ~0x80;
                ha->status = inw(PTR2USHORT(&ha->plx->status));
                TRACE2(("gdth_interrupt() error %d/%d\n",IStatus,ha->status));
            } else
                ha->status = S_OK;
            ha->info = inl(PTR2USHORT(&ha->plx->info[0]));
            ha->service = inw(PTR2USHORT(&ha->plx->service));
            ha->info2 = inl(PTR2USHORT(&ha->plx->info[1]));

            outb(0xff, PTR2USHORT(&ha->plx->edoor_reg)); 
            outb(0x00, PTR2USHORT(&ha->plx->sema1_reg)); 
        } else if (ha->type == GDT_PCIMPR) {
            dp6m_ptr = ha->brd;
            if (IStatus & 0x80) {                       /* error flag */
                IStatus &= ~0x80;
#ifdef INT_COAL
                if (coalesced)
                    ha->status = pcs->ext_status & 0xffff;
                else 
#endif
                    ha->status = gdth_readw(&dp6m_ptr->i960r.status);
                TRACE2(("gdth_interrupt() error %d/%d\n",IStatus,ha->status));
            } else                                      /* no error */
                ha->status = S_OK;
#ifdef INT_COAL
            /* get information */
            if (coalesced) {    
                ha->info = pcs->info0;
                ha->info2 = pcs->info1;
                ha->service = (pcs->ext_status >> 16) & 0xffff;
            } else
#endif
            {
                ha->info = gdth_readl(&dp6m_ptr->i960r.info[0]);
                ha->service = gdth_readw(&dp6m_ptr->i960r.service);
                ha->info2 = gdth_readl(&dp6m_ptr->i960r.info[1]);
            }
            /* event string */
            if (IStatus == ASYNCINDEX) {
                if (ha->service != SCREENSERVICE &&
                    (ha->fw_vers & 0xff) >= 0x1a) {
                    ha->dvr.severity = gdth_readb
                        (&((gdt6m_dpram_str __iomem *)ha->brd)->i960r.severity);
                    for (i = 0; i < 256; ++i) {
                        ha->dvr.event_string[i] = gdth_readb
                            (&((gdt6m_dpram_str __iomem *)ha->brd)->i960r.evt_str[i]);
                        if (ha->dvr.event_string[i] == 0)
                            break;
                    }
                }
            }
#ifdef INT_COAL
            /* Make sure that non coalesced interrupts get cleared
               before being handled by gdth_async_event/gdth_sync_event */
            if (!coalesced)
#endif                          
            {
                gdth_writeb(0xff, &dp6m_ptr->i960r.edoor_reg);
                gdth_writeb(0, &dp6m_ptr->i960r.sema1_reg);
            }
        } else {
            TRACE2(("gdth_interrupt() unknown controller type\n"));
            if (!gdth_polling)
                spin_unlock_irqrestore(&ha2->smp_lock, flags);
            return IRQ_HANDLED;
        }

        TRACE(("gdth_interrupt() index %d stat %d info %d\n",
               IStatus,ha->status,ha->info));

        if (gdth_from_wait) {
            wait_hanum = hanum;
            wait_index = (int)IStatus;
        }

        if (IStatus == ASYNCINDEX) {
            TRACE2(("gdth_interrupt() async. event\n"));
            gdth_async_event(hanum);
            if (!gdth_polling)
                spin_unlock_irqrestore(&ha2->smp_lock, flags);
            gdth_next(hanum);
            return IRQ_HANDLED;
        } 

        if (IStatus == SPEZINDEX) {
            TRACE2(("Service unknown or not initialized !\n"));
            ha->dvr.size = sizeof(ha->dvr.eu.driver);
            ha->dvr.eu.driver.ionode = hanum;
            gdth_store_event(ha, ES_DRIVER, 4, &ha->dvr);
            if (!gdth_polling)
                spin_unlock_irqrestore(&ha2->smp_lock, flags);
            return IRQ_HANDLED;
        }
        scp     = ha->cmd_tab[IStatus-2].cmnd;
        Service = ha->cmd_tab[IStatus-2].service;
        ha->cmd_tab[IStatus-2].cmnd = UNUSED_CMND;
        if (scp == UNUSED_CMND) {
            TRACE2(("gdth_interrupt() index to unused command (%d)\n",IStatus));
            ha->dvr.size = sizeof(ha->dvr.eu.driver);
            ha->dvr.eu.driver.ionode = hanum;
            ha->dvr.eu.driver.index = IStatus;
            gdth_store_event(ha, ES_DRIVER, 1, &ha->dvr);
            if (!gdth_polling)
                spin_unlock_irqrestore(&ha2->smp_lock, flags);
            return IRQ_HANDLED;
        }
        if (scp == INTERNAL_CMND) {
            TRACE(("gdth_interrupt() answer to internal command\n"));
            if (!gdth_polling)
                spin_unlock_irqrestore(&ha2->smp_lock, flags);
            return IRQ_HANDLED;
        }

        TRACE(("gdth_interrupt() sync. status\n"));
        rval = gdth_sync_event(hanum,Service,IStatus,scp);
        if (!gdth_polling)
            spin_unlock_irqrestore(&ha2->smp_lock, flags);
        if (rval == 2) {
            gdth_putq(hanum,scp,scp->SCp.this_residual);
        } else if (rval == 1) {
            scp->scsi_done(scp);
        }

#ifdef INT_COAL
        if (coalesced) {
            /* go to the next status in the status buffer */
            ++pcs;
#ifdef GDTH_STATISTICS
            ++act_int_coal;
            if (act_int_coal > max_int_coal) {
                max_int_coal = act_int_coal;
                printk("GDT: max_int_coal = %d\n",(ushort)max_int_coal);
            }
#endif      
            /* see if there is another status */
            if (pcs->status == 0)    
                /* Stop the coalesce loop */
                next = FALSE;
        }
    } while (next);

    /* coalescing only for new GDT_PCIMPR controllers available */      
    if (ha->type == GDT_PCIMPR && coalesced) {
        gdth_writeb(0xff, &dp6m_ptr->i960r.edoor_reg);
        gdth_writeb(0, &dp6m_ptr->i960r.sema1_reg);
    }
#endif

    gdth_next(hanum);
    return IRQ_HANDLED;
}

static int gdth_sync_event(int hanum,int service,unchar index,Scsi_Cmnd *scp)
{
    register gdth_ha_str *ha;
    gdth_msg_str *msg;
    gdth_cmd_str *cmdp;
    unchar b, t;

    ha   = HADATA(gdth_ctr_tab[hanum]);
    cmdp = ha->pccb;
    TRACE(("gdth_sync_event() serv %d status %d\n",
           service,ha->status));

    if (service == SCREENSERVICE) {
        msg  = ha->pmsg;
        TRACE(("len: %d, answer: %d, ext: %d, alen: %d\n",
               msg->msg_len,msg->msg_answer,msg->msg_ext,msg->msg_alen));
        if (msg->msg_len > MSGLEN+1)
            msg->msg_len = MSGLEN+1;
        if (msg->msg_len)
            if (!(msg->msg_answer && msg->msg_ext)) {
                msg->msg_text[msg->msg_len] = '\0';
                printk("%s",msg->msg_text);
            }

        if (msg->msg_ext && !msg->msg_answer) {
            while (gdth_test_busy(hanum))
                gdth_delay(0);
            cmdp->Service       = SCREENSERVICE;
            cmdp->RequestBuffer = SCREEN_CMND;
            gdth_get_cmd_index(hanum);
            gdth_set_sema0(hanum);
            cmdp->OpCode        = GDT_READ;
            cmdp->BoardNode     = LOCALBOARD;
            cmdp->u.screen.reserved  = 0;
            cmdp->u.screen.su.msg.msg_handle= msg->msg_handle;
            cmdp->u.screen.su.msg.msg_addr  = ha->msg_phys;
            ha->cmd_offs_dpmem = 0;
            ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.screen.su.msg.msg_addr) 
                + sizeof(ulong64);
            ha->cmd_cnt = 0;
            gdth_copy_command(hanum);
            gdth_release_event(hanum);
            return 0;
        }

        if (msg->msg_answer && msg->msg_alen) {
            /* default answers (getchar() not possible) */
            if (msg->msg_alen == 1) {
                msg->msg_alen = 0;
                msg->msg_len = 1;
                msg->msg_text[0] = 0;
            } else {
                msg->msg_alen -= 2;
                msg->msg_len = 2;
                msg->msg_text[0] = 1;
                msg->msg_text[1] = 0;
            }
            msg->msg_ext    = 0;
            msg->msg_answer = 0;
            while (gdth_test_busy(hanum))
                gdth_delay(0);
            cmdp->Service       = SCREENSERVICE;
            cmdp->RequestBuffer = SCREEN_CMND;
            gdth_get_cmd_index(hanum);
            gdth_set_sema0(hanum);
            cmdp->OpCode        = GDT_WRITE;
            cmdp->BoardNode     = LOCALBOARD;
            cmdp->u.screen.reserved  = 0;
            cmdp->u.screen.su.msg.msg_handle= msg->msg_handle;
            cmdp->u.screen.su.msg.msg_addr  = ha->msg_phys;
            ha->cmd_offs_dpmem = 0;
            ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.screen.su.msg.msg_addr) 
                + sizeof(ulong64);
            ha->cmd_cnt = 0;
            gdth_copy_command(hanum);
            gdth_release_event(hanum);
            return 0;
        }
        printk("\n");

    } else {
        b = virt_ctr ? NUMDATA(scp->device->host)->busnum : scp->device->channel;
        t = scp->device->id;
        if (scp->SCp.sent_command == -1 && b != ha->virt_bus) {
            ha->raw[BUS_L2P(ha,b)].io_cnt[t]--;
        }
        /* cache or raw service */
        if (ha->status == S_BSY) {
            TRACE2(("Controller busy -> retry !\n"));
            if (scp->SCp.sent_command == GDT_MOUNT)
                scp->SCp.sent_command = GDT_CLUST_INFO;
            /* retry */
            return 2;
        }
        if (scp->SCp.Status == GDTH_MAP_SG) 
            pci_unmap_sg(ha->pdev,scp->request_buffer,
                         scp->use_sg,scp->SCp.Message);
        else if (scp->SCp.Status == GDTH_MAP_SINGLE) 
            pci_unmap_page(ha->pdev,scp->SCp.dma_handle,
                           scp->request_bufflen,scp->SCp.Message);
        if (scp->SCp.buffer) {
            dma_addr_t addr;
            addr = (dma_addr_t)*(ulong32 *)&scp->SCp.buffer;
            if (scp->host_scribble)
                addr += (dma_addr_t)
                    ((ulong64)(*(ulong32 *)&scp->host_scribble) << 32);
            pci_unmap_page(ha->pdev,addr,16,PCI_DMA_FROMDEVICE);
        }

        if (ha->status == S_OK) {
            scp->SCp.Status = S_OK;
            scp->SCp.Message = ha->info;
            if (scp->SCp.sent_command != -1) {
                TRACE2(("gdth_sync_event(): special cmd 0x%x OK\n",
                        scp->SCp.sent_command));
                /* special commands GDT_CLUST_INFO/GDT_MOUNT ? */
                if (scp->SCp.sent_command == GDT_CLUST_INFO) {
                    ha->hdr[t].cluster_type = (unchar)ha->info;
                    if (!(ha->hdr[t].cluster_type & 
                        CLUSTER_MOUNTED)) {
                        /* NOT MOUNTED -> MOUNT */
                        scp->SCp.sent_command = GDT_MOUNT;
                        if (ha->hdr[t].cluster_type & 
                            CLUSTER_RESERVED) {
                            /* cluster drive RESERVED (on the other node) */
                            scp->SCp.phase = -2;      /* reservation conflict */
                        }
                    } else {
                        scp->SCp.sent_command = -1;
                    }
                } else {
                    if (scp->SCp.sent_command == GDT_MOUNT) {
                        ha->hdr[t].cluster_type |= CLUSTER_MOUNTED;
                        ha->hdr[t].media_changed = TRUE;
                    } else if (scp->SCp.sent_command == GDT_UNMOUNT) {
                        ha->hdr[t].cluster_type &= ~CLUSTER_MOUNTED;
                        ha->hdr[t].media_changed = TRUE;
                    } 
                    scp->SCp.sent_command = -1;
                }
                /* retry */
                scp->SCp.this_residual = HIGH_PRI;
                return 2;
            } else {
                /* RESERVE/RELEASE ? */
                if (scp->cmnd[0] == RESERVE) {
                    ha->hdr[t].cluster_type |= CLUSTER_RESERVED;
                } else if (scp->cmnd[0] == RELEASE) {
                    ha->hdr[t].cluster_type &= ~CLUSTER_RESERVED;
                }           
                scp->result = DID_OK << 16;
                scp->sense_buffer[0] = 0;
            }
        } else {
            scp->SCp.Status = ha->status;
            scp->SCp.Message = ha->info;

            if (scp->SCp.sent_command != -1) {
                TRACE2(("gdth_sync_event(): special cmd 0x%x error 0x%x\n",
                        scp->SCp.sent_command, ha->status));
                if (scp->SCp.sent_command == GDT_SCAN_START ||
                    scp->SCp.sent_command == GDT_SCAN_END) {
                    scp->SCp.sent_command = -1;
                    /* retry */
                    scp->SCp.this_residual = HIGH_PRI;
                    return 2;
                }
                memset((char*)scp->sense_buffer,0,16);
                scp->sense_buffer[0] = 0x70;
                scp->sense_buffer[2] = NOT_READY;
                scp->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
            } else if (service == CACHESERVICE) {
                if (ha->status == S_CACHE_UNKNOWN &&
                    (ha->hdr[t].cluster_type & 
                     CLUSTER_RESERVE_STATE) == CLUSTER_RESERVE_STATE) {
                    /* bus reset -> force GDT_CLUST_INFO */
                    ha->hdr[t].cluster_type &= ~CLUSTER_RESERVED;
                }
                memset((char*)scp->sense_buffer,0,16);
                if (ha->status == (ushort)S_CACHE_RESERV) {
                    scp->result = (DID_OK << 16) | (RESERVATION_CONFLICT << 1);
                } else {
                    scp->sense_buffer[0] = 0x70;
                    scp->sense_buffer[2] = NOT_READY;
                    scp->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
                }
                if (scp->done != gdth_scsi_done) {
                    ha->dvr.size = sizeof(ha->dvr.eu.sync);
                    ha->dvr.eu.sync.ionode  = hanum;
                    ha->dvr.eu.sync.service = service;
                    ha->dvr.eu.sync.status  = ha->status;
                    ha->dvr.eu.sync.info    = ha->info;
                    ha->dvr.eu.sync.hostdrive = t;
                    if (ha->status >= 0x8000)
                        gdth_store_event(ha, ES_SYNC, 0, &ha->dvr);
                    else
                        gdth_store_event(ha, ES_SYNC, service, &ha->dvr);
                }
            } else {
                /* sense buffer filled from controller firmware (DMA) */
                if (ha->status != S_RAW_SCSI || ha->info >= 0x100) {
                    scp->result = DID_BAD_TARGET << 16;
                } else {
                    scp->result = (DID_OK << 16) | ha->info;
                }
            }
        }
        if (!scp->SCp.have_data_in)
            scp->SCp.have_data_in++;
        else 
            return 1;
    }

    return 0;
}

static char *async_cache_tab[] = {
/* 0*/  "\011\000\002\002\002\004\002\006\004"
        "GDT HA %u, service %u, async. status %u/%lu unknown",
/* 1*/  "\011\000\002\002\002\004\002\006\004"
        "GDT HA %u, service %u, async. status %u/%lu unknown",
/* 2*/  "\005\000\002\006\004"
        "GDT HA %u, Host Drive %lu not ready",
/* 3*/  "\005\000\002\006\004"
        "GDT HA %u, Host Drive %lu: REASSIGN not successful and/or data error on reassigned blocks. Drive may crash in the future and should be replaced",
/* 4*/  "\005\000\002\006\004"
        "GDT HA %u, mirror update on Host Drive %lu failed",
/* 5*/  "\005\000\002\006\004"
        "GDT HA %u, Mirror Drive %lu failed",
/* 6*/  "\005\000\002\006\004"
        "GDT HA %u, Mirror Drive %lu: REASSIGN not successful and/or data error on reassigned blocks. Drive may crash in the future and should be replaced",
/* 7*/  "\005\000\002\006\004"
        "GDT HA %u, Host Drive %lu write protected",
/* 8*/  "\005\000\002\006\004"
        "GDT HA %u, media changed in Host Drive %lu",
/* 9*/  "\005\000\002\006\004"
        "GDT HA %u, Host Drive %lu is offline",
/*10*/  "\005\000\002\006\004"
        "GDT HA %u, media change of Mirror Drive %lu",
/*11*/  "\005\000\002\006\004"
        "GDT HA %u, Mirror Drive %lu is write protected",
/*12*/  "\005\000\002\006\004"
        "GDT HA %u, general error on Host Drive %lu. Please check the devices of this drive!",
/*13*/  "\007\000\002\006\002\010\002"
        "GDT HA %u, Array Drive %u: Cache Drive %u failed",
/*14*/  "\005\000\002\006\002"
        "GDT HA %u, Array Drive %u: FAIL state entered",
/*15*/  "\005\000\002\006\002"
        "GDT HA %u, Array Drive %u: error",
/*16*/  "\007\000\002\006\002\010\002"
        "GDT HA %u, Array Drive %u: failed drive replaced by Cache Drive %u",
/*17*/  "\005\000\002\006\002"
        "GDT HA %u, Array Drive %u: parity build failed",
/*18*/  "\005\000\002\006\002"
        "GDT HA %u, Array Drive %u: drive rebuild failed",
/*19*/  "\005\000\002\010\002"
        "GDT HA %u, Test of Hot Fix %u failed",
/*20*/  "\005\000\002\006\002"
        "GDT HA %u, Array Drive %u: drive build finished successfully",
/*21*/  "\005\000\002\006\002"
        "GDT HA %u, Array Drive %u: drive rebuild finished successfully",
/*22*/  "\007\000\002\006\002\010\002"
        "GDT HA %u, Array Drive %u: Hot Fix %u activated",
/*23*/  "\005\000\002\006\002"
        "GDT HA %u, Host Drive %u: processing of i/o aborted due to serious drive error",
/*24*/  "\005\000\002\010\002"
        "GDT HA %u, mirror update on Cache Drive %u completed",
/*25*/  "\005\000\002\010\002"
        "GDT HA %u, mirror update on Cache Drive %lu failed",
/*26*/  "\005\000\002\006\002"
        "GDT HA %u, Array Drive %u: drive rebuild started",
/*27*/  "\005\000\002\012\001"
        "GDT HA %u, Fault bus %u: SHELF OK detected",
/*28*/  "\005\000\002\012\001"
        "GDT HA %u, Fault bus %u: SHELF not OK detected",
/*29*/  "\007\000\002\012\001\013\001"
        "GDT HA %u, Fault bus %u, ID %u: Auto Hot Plug started",
/*30*/  "\007\000\002\012\001\013\001"
        "GDT HA %u, Fault bus %u, ID %u: new disk detected",
/*31*/  "\007\000\002\012\001\013\001"
        "GDT HA %u, Fault bus %u, ID %u: old disk detected",
/*32*/  "\007\000\002\012\001\013\001"
        "GDT HA %u, Fault bus %u, ID %u: plugging an active disk is invalid",
/*33*/  "\007\000\002\012\001\013\001"
        "GDT HA %u, Fault bus %u, ID %u: invalid device detected",
/*34*/  "\011\000\002\012\001\013\001\006\004"
        "GDT HA %u, Fault bus %u, ID %u: insufficient disk capacity (%lu MB required)",
/*35*/  "\007\000\002\012\001\013\001"
        "GDT HA %u, Fault bus %u, ID %u: disk write protected",
/*36*/  "\007\000\002\012\001\013\001"
        "GDT HA %u, Fault bus %u, ID %u: disk not available",
/*37*/  "\007\000\002\012\001\006\004"
        "GDT HA %u, Fault bus %u: swap detected (%lu)",
/*38*/  "\007\000\002\012\001\013\001"
        "GDT HA %u, Fault bus %u, ID %u: Auto Hot Plug finished successfully",
/*39*/  "\007\000\002\012\001\013\001"
        "GDT HA %u, Fault bus %u, ID %u: Auto Hot Plug aborted due to user Hot Plug",
/*40*/  "\007\000\002\012\001\013\001"
        "GDT HA %u, Fault bus %u, ID %u: Auto Hot Plug aborted",
/*41*/  "\007\000\002\012\001\013\001"
        "GDT HA %u, Fault bus %u, ID %u: Auto Hot Plug for Hot Fix started",
/*42*/  "\005\000\002\006\002"
        "GDT HA %u, Array Drive %u: drive build started",
/*43*/  "\003\000\002"
        "GDT HA %u, DRAM parity error detected",
/*44*/  "\005\000\002\006\002"
        "GDT HA %u, Mirror Drive %u: update started",
/*45*/  "\007\000\002\006\002\010\002"
        "GDT HA %u, Mirror Drive %u: Hot Fix %u activated",
/*46*/  "\005\000\002\006\002"
        "GDT HA %u, Array Drive %u: no matching Pool Hot Fix Drive available",
/*47*/  "\005\000\002\006\002"
        "GDT HA %u, Array Drive %u: Pool Hot Fix Drive available",
/*48*/  "\005\000\002\006\002"
        "GDT HA %u, Mirror Drive %u: no matching Pool Hot Fix Drive available",
/*49*/  "\005\000\002\006\002"
        "GDT HA %u, Mirror Drive %u: Pool Hot Fix Drive available",
/*50*/  "\007\000\002\012\001\013\001"
        "GDT HA %u, SCSI bus %u, ID %u: IGNORE_WIDE_RESIDUE message received",
/*51*/  "\005\000\002\006\002"
        "GDT HA %u, Array Drive %u: expand started",
/*52*/  "\005\000\002\006\002"
        "GDT HA %u, Array Drive %u: expand finished successfully",
/*53*/  "\005\000\002\006\002"
        "GDT HA %u, Array Drive %u: expand failed",
/*54*/  "\003\000\002"
        "GDT HA %u, CPU temperature critical",
/*55*/  "\003\000\002"
        "GDT HA %u, CPU temperature OK",
/*56*/  "\005\000\002\006\004"
        "GDT HA %u, Host drive %lu created",
/*57*/  "\005\000\002\006\002"
        "GDT HA %u, Array Drive %u: expand restarted",
/*58*/  "\005\000\002\006\002"
        "GDT HA %u, Array Drive %u: expand stopped",
/*59*/  "\005\000\002\010\002"
        "GDT HA %u, Mirror Drive %u: drive build quited",
/*60*/  "\005\000\002\006\002"
        "GDT HA %u, Array Drive %u: parity build quited",
/*61*/  "\005\000\002\006\002"
        "GDT HA %u, Array Drive %u: drive rebuild quited",
/*62*/  "\005\000\002\006\002"
        "GDT HA %u, Array Drive %u: parity verify started",
/*63*/  "\005\000\002\006\002"
        "GDT HA %u, Array Drive %u: parity verify done",
/*64*/  "\005\000\002\006\002"
        "GDT HA %u, Array Drive %u: parity verify failed",
/*65*/  "\005\000\002\006\002"
        "GDT HA %u, Array Drive %u: parity error detected",
/*66*/  "\005\000\002\006\002"
        "GDT HA %u, Array Drive %u: parity verify quited",
/*67*/  "\005\000\002\006\002"
        "GDT HA %u, Host Drive %u reserved",
/*68*/  "\005\000\002\006\002"
        "GDT HA %u, Host Drive %u mounted and released",
/*69*/  "\005\000\002\006\002"
        "GDT HA %u, Host Drive %u released",
/*70*/  "\003\000\002"
        "GDT HA %u, DRAM error detected and corrected with ECC",
/*71*/  "\003\000\002"
        "GDT HA %u, Uncorrectable DRAM error detected with ECC",
/*72*/  "\011\000\002\012\001\013\001\014\001"
        "GDT HA %u, SCSI bus %u, ID %u, LUN %u: reassigning block",
/*73*/  "\005\000\002\006\002"
        "GDT HA %u, Host drive %u resetted locally",
/*74*/  "\005\000\002\006\002"
        "GDT HA %u, Host drive %u resetted remotely",
/*75*/  "\003\000\002"
        "GDT HA %u, async. status 75 unknown",
};


static int gdth_async_event(int hanum)
{
    gdth_ha_str *ha;
    gdth_cmd_str *cmdp;
    int cmd_index;

    ha  = HADATA(gdth_ctr_tab[hanum]);
    cmdp= ha->pccb;
    TRACE2(("gdth_async_event() ha %d serv %d\n",
            hanum,ha->service));

    if (ha->service == SCREENSERVICE) {
        if (ha->status == MSG_REQUEST) {
            while (gdth_test_busy(hanum))
                gdth_delay(0);
            cmdp->Service       = SCREENSERVICE;
            cmdp->RequestBuffer = SCREEN_CMND;
            cmd_index = gdth_get_cmd_index(hanum);
            gdth_set_sema0(hanum);
            cmdp->OpCode        = GDT_READ;
            cmdp->BoardNode     = LOCALBOARD;
            cmdp->u.screen.reserved  = 0;
            cmdp->u.screen.su.msg.msg_handle= MSG_INV_HANDLE;
            cmdp->u.screen.su.msg.msg_addr  = ha->msg_phys;
            ha->cmd_offs_dpmem = 0;
            ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.screen.su.msg.msg_addr) 
                + sizeof(ulong64);
            ha->cmd_cnt = 0;
            gdth_copy_command(hanum);
            if (ha->type == GDT_EISA)
                printk("[EISA slot %d] ",(ushort)ha->brd_phys);
            else if (ha->type == GDT_ISA)
                printk("[DPMEM 0x%4X] ",(ushort)ha->brd_phys);
            else 
                printk("[PCI %d/%d] ",(ushort)(ha->brd_phys>>8),
                       (ushort)((ha->brd_phys>>3)&0x1f));
            gdth_release_event(hanum);
        }

    } else {
        if (ha->type == GDT_PCIMPR && 
            (ha->fw_vers & 0xff) >= 0x1a) {
            ha->dvr.size = 0;
            ha->dvr.eu.async.ionode = hanum;
            ha->dvr.eu.async.status  = ha->status;
            /* severity and event_string already set! */
        } else {        
            ha->dvr.size = sizeof(ha->dvr.eu.async);
            ha->dvr.eu.async.ionode   = hanum;
            ha->dvr.eu.async.service = ha->service;
            ha->dvr.eu.async.status  = ha->status;
            ha->dvr.eu.async.info    = ha->info;
            *(ulong32 *)ha->dvr.eu.async.scsi_coord  = ha->info2;
        }
        gdth_store_event( ha, ES_ASYNC, ha->service, &ha->dvr );
        gdth_log_event( &ha->dvr, NULL );
    
        /* new host drive from expand? */
        if (ha->service == CACHESERVICE && ha->status == 56) {
            TRACE2(("gdth_async_event(): new host drive %d created\n",
                    (ushort)ha->info));
            /* gdth_analyse_hdrive(hanum, (ushort)ha->info); */
        }   
    }
    return 1;
}

static void gdth_log_event(gdth_evt_data *dvr, char *buffer)
{
    gdth_stackframe stack;
    char *f = NULL;
    int i,j;

    TRACE2(("gdth_log_event()\n"));
    if (dvr->size == 0) {
        if (buffer == NULL) {
            printk("Adapter %d: %s\n",dvr->eu.async.ionode,dvr->event_string); 
        } else {
            sprintf(buffer,"Adapter %d: %s\n",
                dvr->eu.async.ionode,dvr->event_string); 
        }
    } else if (dvr->eu.async.service == CACHESERVICE && 
        INDEX_OK(dvr->eu.async.status, async_cache_tab)) {
        TRACE2(("GDT: Async. event cache service, event no.: %d\n",
                dvr->eu.async.status));
        
        f = async_cache_tab[dvr->eu.async.status];
        
        /* i: parameter to push, j: stack element to fill */
        for (j=0,i=1; i < f[0]; i+=2) {
            switch (f[i+1]) {
              case 4:
                stack.b[j++] = *(ulong32*)&dvr->eu.stream[(int)f[i]];
                break;
              case 2:
                stack.b[j++] = *(ushort*)&dvr->eu.stream[(int)f[i]];
                break;
              case 1:
                stack.b[j++] = *(unchar*)&dvr->eu.stream[(int)f[i]];
                break;
              default:
                break;
            }
        }
        
        if (buffer == NULL) {
            printk(&f[(int)f[0]],stack); 
            printk("\n");
        } else {
            sprintf(buffer,&f[(int)f[0]],stack); 
        }

    } else {
        if (buffer == NULL) {
            printk("GDT HA %u, Unknown async. event service %d event no. %d\n",
                   dvr->eu.async.ionode,dvr->eu.async.service,dvr->eu.async.status);
        } else {
            sprintf(buffer,"GDT HA %u, Unknown async. event service %d event no. %d",
                    dvr->eu.async.ionode,dvr->eu.async.service,dvr->eu.async.status);
        }
    }
}

#ifdef GDTH_STATISTICS
static void gdth_timeout(ulong data)
{
    ulong32 i;
    Scsi_Cmnd *nscp;
    gdth_ha_str *ha;
    ulong flags;
    int hanum = 0;

    ha = HADATA(gdth_ctr_tab[hanum]);
    spin_lock_irqsave(&ha->smp_lock, flags);

    for (act_stats=0,i=0; i<GDTH_MAXCMDS; ++i) 
        if (ha->cmd_tab[i].cmnd != UNUSED_CMND)
            ++act_stats;

    for (act_rq=0,nscp=ha->req_first; nscp; nscp=(Scsi_Cmnd*)nscp->SCp.ptr)
        ++act_rq;

    TRACE2(("gdth_to(): ints %d, ios %d, act_stats %d, act_rq %d\n",
            act_ints, act_ios, act_stats, act_rq));
    act_ints = act_ios = 0;

    gdth_timer.expires = jiffies + 30 * HZ;
    add_timer(&gdth_timer);
    spin_unlock_irqrestore(&ha->smp_lock, flags);
}
#endif

static void __init internal_setup(char *str,int *ints)
{
    int i, argc;
    char *cur_str, *argv;

    TRACE2(("internal_setup() str %s ints[0] %d\n", 
            str ? str:"NULL", ints ? ints[0]:0));

    /* read irq[] from ints[] */
    if (ints) {
        argc = ints[0];
        if (argc > 0) {
            if (argc > MAXHA)
                argc = MAXHA;
            for (i = 0; i < argc; ++i)
                irq[i] = ints[i+1];
        }
    }

    /* analyse string */
    argv = str;
    while (argv && (cur_str = strchr(argv, ':'))) {
        int val = 0, c = *++cur_str;
        
        if (c == 'n' || c == 'N')
            val = 0;
        else if (c == 'y' || c == 'Y')
            val = 1;
        else
            val = (int)simple_strtoul(cur_str, NULL, 0);

        if (!strncmp(argv, "disable:", 8))
            disable = val;
        else if (!strncmp(argv, "reserve_mode:", 13))
            reserve_mode = val;
        else if (!strncmp(argv, "reverse_scan:", 13))
            reverse_scan = val;
        else if (!strncmp(argv, "hdr_channel:", 12))
            hdr_channel = val;
        else if (!strncmp(argv, "max_ids:", 8))
            max_ids = val;
        else if (!strncmp(argv, "rescan:", 7))
            rescan = val;
        else if (!strncmp(argv, "virt_ctr:", 9))
            virt_ctr = val;
        else if (!strncmp(argv, "shared_access:", 14))
            shared_access = val;
        else if (!strncmp(argv, "probe_eisa_isa:", 15))
            probe_eisa_isa = val;
        else if (!strncmp(argv, "reserve_list:", 13)) {
            reserve_list[0] = val;
            for (i = 1; i < MAX_RES_ARGS; i++) {
                cur_str = strchr(cur_str, ',');
                if (!cur_str)
                    break;
                if (!isdigit((int)*++cur_str)) {
                    --cur_str;          
                    break;
                }
                reserve_list[i] = 
                    (int)simple_strtoul(cur_str, NULL, 0);
            }
            if (!cur_str)
                break;
            argv = ++cur_str;
            continue;
        }

        if ((argv = strchr(argv, ',')))
            ++argv;
    }
}

int __init option_setup(char *str)
{
    int ints[MAXHA];
    char *cur = str;
    int i = 1;

    TRACE2(("option_setup() str %s\n", str ? str:"NULL")); 

    while (cur && isdigit(*cur) && i <= MAXHA) {
        ints[i++] = simple_strtoul(cur, NULL, 0);
        if ((cur = strchr(cur, ',')) != NULL) cur++;
    }

    ints[0] = i - 1;
    internal_setup(cur, ints);
    return 1;
}

#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
static int __init gdth_detect(struct scsi_host_template *shtp)
#else
static int __init gdth_detect(Scsi_Host_Template *shtp)
#endif
{
    struct Scsi_Host *shp;
    gdth_pci_str pcistr[MAXHA];
    gdth_ha_str *ha;
    ulong32 isa_bios;
    ushort eisa_slot;
    int i,hanum,cnt,ctr,err;
    unchar b;
    
 
#ifdef DEBUG_GDTH
    printk("GDT: This driver contains debugging information !! Trace level = %d\n",
        DebugState);
    printk("     Destination of debugging information: ");
#ifdef __SERIAL__
#ifdef __COM2__
    printk("Serial port COM2\n");
#else
    printk("Serial port COM1\n");
#endif
#else
    printk("Console\n");
#endif
    gdth_delay(3000);
#endif

    TRACE(("gdth_detect()\n"));

    if (disable) {
        printk("GDT-HA: Controller driver disabled from command line !\n");
        return 0;
    }

    printk("GDT-HA: Storage RAID Controller Driver. Version: %s\n",GDTH_VERSION_STR);
    /* initializations */
    gdth_polling = TRUE; b = 0;
    gdth_clear_events();

    /* As default we do not probe for EISA or ISA controllers */
    if (probe_eisa_isa) {    
        /* scanning for controllers, at first: ISA controller */
        for (isa_bios=0xc8000UL; isa_bios<=0xd8000UL; isa_bios+=0x8000UL) {
            dma_addr_t scratch_dma_handle;
            scratch_dma_handle = 0;

            if (gdth_ctr_count >= MAXHA) 
                break;
            if (gdth_search_isa(isa_bios)) {        /* controller found */
                shp = scsi_register(shtp,sizeof(gdth_ext_str));
                if (shp == NULL)
                    continue;  

                ha = HADATA(shp);
                if (!gdth_init_isa(isa_bios,ha)) {
                    scsi_unregister(shp);
                    continue;
                }
#ifdef __ia64__
                break;
#else
                /* controller found and initialized */
                printk("Configuring GDT-ISA HA at BIOS 0x%05X IRQ %u DRQ %u\n",
                       isa_bios,ha->irq,ha->drq);

                if (request_irq(ha->irq,gdth_interrupt,IRQF_DISABLED,"gdth",ha)) {
                    printk("GDT-ISA: Unable to allocate IRQ\n");
                    scsi_unregister(shp);
                    continue;
                }
                if (request_dma(ha->drq,"gdth")) {
                    printk("GDT-ISA: Unable to allocate DMA channel\n");
                    free_irq(ha->irq,ha);
                    scsi_unregister(shp);
                    continue;
                }
                set_dma_mode(ha->drq,DMA_MODE_CASCADE);
                enable_dma(ha->drq);
                shp->unchecked_isa_dma = 1;
                shp->irq = ha->irq;
                shp->dma_channel = ha->drq;
                hanum = gdth_ctr_count;         
                gdth_ctr_tab[gdth_ctr_count++] = shp;
                gdth_ctr_vtab[gdth_ctr_vcount++] = shp;

                NUMDATA(shp)->hanum = (ushort)hanum;
                NUMDATA(shp)->busnum= 0;

                ha->pccb = CMDDATA(shp);
                ha->ccb_phys = 0L;
                ha->pdev = NULL;
                ha->pscratch = pci_alloc_consistent(ha->pdev, GDTH_SCRATCH, 
                                                    &scratch_dma_handle);
                ha->scratch_phys = scratch_dma_handle;
                ha->pmsg = pci_alloc_consistent(ha->pdev, sizeof(gdth_msg_str), 
                                                &scratch_dma_handle);
                ha->msg_phys = scratch_dma_handle;
#ifdef INT_COAL
                ha->coal_stat = (gdth_coal_status *)
                    pci_alloc_consistent(ha->pdev, sizeof(gdth_coal_status) *
                        MAXOFFSETS, &scratch_dma_handle);
                ha->coal_stat_phys = scratch_dma_handle;
#endif

                ha->scratch_busy = FALSE;
                ha->req_first = NULL;
                ha->tid_cnt = MAX_HDRIVES;
                if (max_ids > 0 && max_ids < ha->tid_cnt)
                    ha->tid_cnt = max_ids;
                for (i=0; i<GDTH_MAXCMDS; ++i)
                    ha->cmd_tab[i].cmnd = UNUSED_CMND;
                ha->scan_mode = rescan ? 0x10 : 0;

                if (ha->pscratch == NULL || ha->pmsg == NULL || 
                    !gdth_search_drives(hanum)) {
                    printk("GDT-ISA: Error during device scan\n");
                    --gdth_ctr_count;
                    --gdth_ctr_vcount;

#ifdef INT_COAL
                    if (ha->coal_stat)
                        pci_free_consistent(ha->pdev, sizeof(gdth_coal_status) *
                                            MAXOFFSETS, ha->coal_stat,
                                            ha->coal_stat_phys);
#endif
                    if (ha->pscratch)
                        pci_free_consistent(ha->pdev, GDTH_SCRATCH, 
                                            ha->pscratch, ha->scratch_phys);
                    if (ha->pmsg)
                        pci_free_consistent(ha->pdev, sizeof(gdth_msg_str), 
                                            ha->pmsg, ha->msg_phys);

                    free_irq(ha->irq,ha);
                    scsi_unregister(shp);
                    continue;
                }
                if (hdr_channel < 0 || hdr_channel > ha->bus_cnt)
                    hdr_channel = ha->bus_cnt;
                ha->virt_bus = hdr_channel;

#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,20) && \
    LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
                shp->highmem_io  = 0;
#endif
                if (ha->cache_feat & ha->raw_feat & ha->screen_feat & GDT_64BIT) 
                    shp->max_cmd_len = 16;

                shp->max_id      = ha->tid_cnt;
                shp->max_lun     = MAXLUN;
                shp->max_channel = virt_ctr ? 0 : ha->bus_cnt;
                if (virt_ctr) {
                    virt_ctr = 1;
                    /* register addit. SCSI channels as virtual controllers */
                    for (b = 1; b < ha->bus_cnt + 1; ++b) {
                        shp = scsi_register(shtp,sizeof(gdth_num_str));
                        shp->unchecked_isa_dma = 1;
                        shp->irq = ha->irq;
                        shp->dma_channel = ha->drq;
                        gdth_ctr_vtab[gdth_ctr_vcount++] = shp;
                        NUMDATA(shp)->hanum = (ushort)hanum;
                        NUMDATA(shp)->busnum = b;
                    }
                }  

                spin_lock_init(&ha->smp_lock);
                gdth_enable_int(hanum);
#endif /* !__ia64__ */
            }
        }

        /* scanning for EISA controllers */
        for (eisa_slot=0x1000; eisa_slot<=0x8000; eisa_slot+=0x1000) {
            dma_addr_t scratch_dma_handle;
            scratch_dma_handle = 0;

            if (gdth_ctr_count >= MAXHA) 
                break;
            if (gdth_search_eisa(eisa_slot)) {      /* controller found */
                shp = scsi_register(shtp,sizeof(gdth_ext_str));
                if (shp == NULL)
                    continue;  

                ha = HADATA(shp);
                if (!gdth_init_eisa(eisa_slot,ha)) {
                    scsi_unregister(shp);
                    continue;
                }
                /* controller found and initialized */
                printk("Configuring GDT-EISA HA at Slot %d IRQ %u\n",
                       eisa_slot>>12,ha->irq);

                if (request_irq(ha->irq,gdth_interrupt,IRQF_DISABLED,"gdth",ha)) {
                    printk("GDT-EISA: Unable to allocate IRQ\n");
                    scsi_unregister(shp);
                    continue;
                }
                shp->unchecked_isa_dma = 0;
                shp->irq = ha->irq;
                shp->dma_channel = 0xff;
                hanum = gdth_ctr_count;
                gdth_ctr_tab[gdth_ctr_count++] = shp;
                gdth_ctr_vtab[gdth_ctr_vcount++] = shp;

                NUMDATA(shp)->hanum = (ushort)hanum;
                NUMDATA(shp)->busnum= 0;
                TRACE2(("EISA detect Bus 0: hanum %d\n",
                        NUMDATA(shp)->hanum));

                ha->pccb = CMDDATA(shp);
                ha->ccb_phys = 0L; 

                ha->pdev = NULL;
                ha->pscratch = pci_alloc_consistent(ha->pdev, GDTH_SCRATCH, 
                                                    &scratch_dma_handle);
                ha->scratch_phys = scratch_dma_handle;
                ha->pmsg = pci_alloc_consistent(ha->pdev, sizeof(gdth_msg_str), 
                                                &scratch_dma_handle);
                ha->msg_phys = scratch_dma_handle;
#ifdef INT_COAL
                ha->coal_stat = (gdth_coal_status *)
                    pci_alloc_consistent(ha->pdev, sizeof(gdth_coal_status) *
                                         MAXOFFSETS, &scratch_dma_handle);
                ha->coal_stat_phys = scratch_dma_handle;
#endif
                ha->ccb_phys = 
                    pci_map_single(ha->pdev,ha->pccb,
                                   sizeof(gdth_cmd_str),PCI_DMA_BIDIRECTIONAL);
                ha->scratch_busy = FALSE;
                ha->req_first = NULL;
                ha->tid_cnt = MAX_HDRIVES;
                if (max_ids > 0 && max_ids < ha->tid_cnt)
                    ha->tid_cnt = max_ids;
                for (i=0; i<GDTH_MAXCMDS; ++i)
                    ha->cmd_tab[i].cmnd = UNUSED_CMND;
                ha->scan_mode = rescan ? 0x10 : 0;

                if (ha->pscratch == NULL || ha->pmsg == NULL || 
                    !gdth_search_drives(hanum)) {
                    printk("GDT-EISA: Error during device scan\n");
                    --gdth_ctr_count;
                    --gdth_ctr_vcount;
#ifdef INT_COAL
                    if (ha->coal_stat)
                        pci_free_consistent(ha->pdev, sizeof(gdth_coal_status) *
                                            MAXOFFSETS, ha->coal_stat,
                                            ha->coal_stat_phys);
#endif
                    if (ha->pscratch)
                        pci_free_consistent(ha->pdev, GDTH_SCRATCH, 
                                            ha->pscratch, ha->scratch_phys);
                    if (ha->pmsg)
                        pci_free_consistent(ha->pdev, sizeof(gdth_msg_str), 
                                            ha->pmsg, ha->msg_phys);
                    if (ha->ccb_phys)
                        pci_unmap_single(ha->pdev,ha->ccb_phys,
                                        sizeof(gdth_cmd_str),PCI_DMA_BIDIRECTIONAL);
                    free_irq(ha->irq,ha);
                    scsi_unregister(shp);
                    continue;
                }
                if (hdr_channel < 0 || hdr_channel > ha->bus_cnt)
                    hdr_channel = ha->bus_cnt;
                ha->virt_bus = hdr_channel;

#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,20) && \
    LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
                shp->highmem_io  = 0;
#endif
                if (ha->cache_feat & ha->raw_feat & ha->screen_feat & GDT_64BIT) 
                    shp->max_cmd_len = 16;

                shp->max_id      = ha->tid_cnt;
                shp->max_lun     = MAXLUN;
                shp->max_channel = virt_ctr ? 0 : ha->bus_cnt;
                if (virt_ctr) {
                    virt_ctr = 1;
                    /* register addit. SCSI channels as virtual controllers */
                    for (b = 1; b < ha->bus_cnt + 1; ++b) {
                        shp = scsi_register(shtp,sizeof(gdth_num_str));
                        shp->unchecked_isa_dma = 0;
                        shp->irq = ha->irq;
                        shp->dma_channel = 0xff;
                        gdth_ctr_vtab[gdth_ctr_vcount++] = shp;
                        NUMDATA(shp)->hanum = (ushort)hanum;
                        NUMDATA(shp)->busnum = b;
                    }
                }  

                spin_lock_init(&ha->smp_lock);
                gdth_enable_int(hanum);
            }
        }
    }

    /* scanning for PCI controllers */
    cnt = gdth_search_pci(pcistr);
    printk("GDT-HA: Found %d PCI Storage RAID Controllers\n",cnt);
    gdth_sort_pci(pcistr,cnt);
    for (ctr = 0; ctr < cnt; ++ctr) {
        dma_addr_t scratch_dma_handle;
        scratch_dma_handle = 0;

        if (gdth_ctr_count >= MAXHA)
            break;
        shp = scsi_register(shtp,sizeof(gdth_ext_str));
        if (shp == NULL)
            continue;  

        ha = HADATA(shp);
        if (!gdth_init_pci(&pcistr[ctr],ha)) {
            scsi_unregister(shp);
            continue;
        }
        /* controller found and initialized */
        printk("Configuring GDT-PCI HA at %d/%d IRQ %u\n",
               pcistr[ctr].bus,PCI_SLOT(pcistr[ctr].device_fn),ha->irq);

        if (request_irq(ha->irq, gdth_interrupt,
                        IRQF_DISABLED|IRQF_SHARED, "gdth", ha))
        {
            printk("GDT-PCI: Unable to allocate IRQ\n");
            scsi_unregister(shp);
            continue;
        }
        shp->unchecked_isa_dma = 0;
        shp->irq = ha->irq;
        shp->dma_channel = 0xff;
        hanum = gdth_ctr_count;
        gdth_ctr_tab[gdth_ctr_count++] = shp;
        gdth_ctr_vtab[gdth_ctr_vcount++] = shp;

        NUMDATA(shp)->hanum = (ushort)hanum;
        NUMDATA(shp)->busnum= 0;

        ha->pccb = CMDDATA(shp);
        ha->ccb_phys = 0L;

        ha->pscratch = pci_alloc_consistent(ha->pdev, GDTH_SCRATCH, 
                                            &scratch_dma_handle);
        ha->scratch_phys = scratch_dma_handle;
        ha->pmsg = pci_alloc_consistent(ha->pdev, sizeof(gdth_msg_str), 
                                        &scratch_dma_handle);
        ha->msg_phys = scratch_dma_handle;
#ifdef INT_COAL
        ha->coal_stat = (gdth_coal_status *)
            pci_alloc_consistent(ha->pdev, sizeof(gdth_coal_status) *
                                 MAXOFFSETS, &scratch_dma_handle);
        ha->coal_stat_phys = scratch_dma_handle;
#endif
        ha->scratch_busy = FALSE;
        ha->req_first = NULL;
        ha->tid_cnt = pcistr[ctr].device_id >= 0x200 ? MAXID : MAX_HDRIVES;
        if (max_ids > 0 && max_ids < ha->tid_cnt)
            ha->tid_cnt = max_ids;
        for (i=0; i<GDTH_MAXCMDS; ++i)
            ha->cmd_tab[i].cmnd = UNUSED_CMND;
        ha->scan_mode = rescan ? 0x10 : 0;

        err = FALSE;
        if (ha->pscratch == NULL || ha->pmsg == NULL || 
            !gdth_search_drives(hanum)) {
            err = TRUE;
        } else {
            if (hdr_channel < 0 || hdr_channel > ha->bus_cnt)
                hdr_channel = ha->bus_cnt;
            ha->virt_bus = hdr_channel;


#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
            scsi_set_pci_device(shp, pcistr[ctr].pdev);
#endif
            if (!(ha->cache_feat & ha->raw_feat & ha->screen_feat &GDT_64BIT)||
                /* 64-bit DMA only supported from FW >= x.43 */
                (!ha->dma64_support)) {
                if (pci_set_dma_mask(pcistr[ctr].pdev, DMA_32BIT_MASK)) {
                    printk(KERN_WARNING "GDT-PCI %d: Unable to set 32-bit DMA\n", hanum);
                    err = TRUE;
                }
            } else {
                shp->max_cmd_len = 16;
                if (!pci_set_dma_mask(pcistr[ctr].pdev, DMA_64BIT_MASK)) {
                    printk("GDT-PCI %d: 64-bit DMA enabled\n", hanum);
                } else if (pci_set_dma_mask(pcistr[ctr].pdev, DMA_32BIT_MASK)) {
                    printk(KERN_WARNING "GDT-PCI %d: Unable to set 64/32-bit DMA\n", hanum);
                    err = TRUE;
                }
            }
        }

        if (err) {
            printk("GDT-PCI %d: Error during device scan\n", hanum);
            --gdth_ctr_count;
            --gdth_ctr_vcount;
#ifdef INT_COAL
            if (ha->coal_stat)
                pci_free_consistent(ha->pdev, sizeof(gdth_coal_status) *
                                    MAXOFFSETS, ha->coal_stat,
                                    ha->coal_stat_phys);
#endif
            if (ha->pscratch)
                pci_free_consistent(ha->pdev, GDTH_SCRATCH, 
                                    ha->pscratch, ha->scratch_phys);
            if (ha->pmsg)
                pci_free_consistent(ha->pdev, sizeof(gdth_msg_str), 
                                    ha->pmsg, ha->msg_phys);
            free_irq(ha->irq,ha);
            scsi_unregister(shp);
            continue;
        }

        shp->max_id      = ha->tid_cnt;
        shp->max_lun     = MAXLUN;
        shp->max_channel = virt_ctr ? 0 : ha->bus_cnt;
        if (virt_ctr) {
            virt_ctr = 1;
            /* register addit. SCSI channels as virtual controllers */
            for (b = 1; b < ha->bus_cnt + 1; ++b) {
                shp = scsi_register(shtp,sizeof(gdth_num_str));
                shp->unchecked_isa_dma = 0;
                shp->irq = ha->irq;
                shp->dma_channel = 0xff;
                gdth_ctr_vtab[gdth_ctr_vcount++] = shp;
                NUMDATA(shp)->hanum = (ushort)hanum;
                NUMDATA(shp)->busnum = b;
            }
        }  

        spin_lock_init(&ha->smp_lock);
        gdth_enable_int(hanum);
    }
    
    TRACE2(("gdth_detect() %d controller detected\n",gdth_ctr_count));
    if (gdth_ctr_count > 0) {
#ifdef GDTH_STATISTICS
        TRACE2(("gdth_detect(): Initializing timer !\n"));
        init_timer(&gdth_timer);
        gdth_timer.expires = jiffies + HZ;
        gdth_timer.data = 0L;
        gdth_timer.function = gdth_timeout;
        add_timer(&gdth_timer);
#endif
        major = register_chrdev(0,"gdth",&gdth_fops);
        notifier_disabled = 0;
        register_reboot_notifier(&gdth_notifier);
    }
    gdth_polling = FALSE;
    return gdth_ctr_vcount;
}

static int gdth_release(struct Scsi_Host *shp)
{
    int hanum;
    gdth_ha_str *ha;

    TRACE2(("gdth_release()\n"));
    if (NUMDATA(shp)->busnum == 0) {
        hanum = NUMDATA(shp)->hanum;
        ha    = HADATA(gdth_ctr_tab[hanum]);
        if (ha->sdev) {
            scsi_free_host_dev(ha->sdev);
            ha->sdev = NULL;
        }
        gdth_flush(hanum);

        if (shp->irq) {
            free_irq(shp->irq,ha);
        }
#ifndef __ia64__
        if (shp->dma_channel != 0xff) {
            free_dma(shp->dma_channel);
        }
#endif
#ifdef INT_COAL
        if (ha->coal_stat)
            pci_free_consistent(ha->pdev, sizeof(gdth_coal_status) *
                                MAXOFFSETS, ha->coal_stat, ha->coal_stat_phys);
#endif
        if (ha->pscratch)
            pci_free_consistent(ha->pdev, GDTH_SCRATCH, 
                                ha->pscratch, ha->scratch_phys);
        if (ha->pmsg)
            pci_free_consistent(ha->pdev, sizeof(gdth_msg_str), 
                                ha->pmsg, ha->msg_phys);
        if (ha->ccb_phys)
            pci_unmap_single(ha->pdev,ha->ccb_phys,
                             sizeof(gdth_cmd_str),PCI_DMA_BIDIRECTIONAL);
        gdth_ctr_released++;
        TRACE2(("gdth_release(): HA %d of %d\n", 
                gdth_ctr_released, gdth_ctr_count));

        if (gdth_ctr_released == gdth_ctr_count) {
#ifdef GDTH_STATISTICS
            del_timer(&gdth_timer);
#endif
            unregister_chrdev(major,"gdth");
            unregister_reboot_notifier(&gdth_notifier);
        }
    }

    scsi_unregister(shp);
    return 0;
}
            

static const char *gdth_ctr_name(int hanum)
{
    gdth_ha_str *ha;

    TRACE2(("gdth_ctr_name()\n"));

    ha    = HADATA(gdth_ctr_tab[hanum]);

    if (ha->type == GDT_EISA) {
        switch (ha->stype) {
          case GDT3_ID:
            return("GDT3000/3020");
          case GDT3A_ID:
            return("GDT3000A/3020A/3050A");
          case GDT3B_ID:
            return("GDT3000B/3010A");
        }
    } else if (ha->type == GDT_ISA) {
        return("GDT2000/2020");
    } else if (ha->type == GDT_PCI) {
        switch (ha->stype) {
          case PCI_DEVICE_ID_VORTEX_GDT60x0:
            return("GDT6000/6020/6050");
          case PCI_DEVICE_ID_VORTEX_GDT6000B:
            return("GDT6000B/6010");
        }
    } 
    /* new controllers (GDT_PCINEW, GDT_PCIMPR, ..) use board_info IOCTL! */

    return("");
}

static const char *gdth_info(struct Scsi_Host *shp)
{
    int hanum;
    gdth_ha_str *ha;

    TRACE2(("gdth_info()\n"));
    hanum = NUMDATA(shp)->hanum;
    ha    = HADATA(gdth_ctr_tab[hanum]);

    return ((const char *)ha->binfo.type_string);
}

static int gdth_eh_bus_reset(Scsi_Cmnd *scp)
{
    int i, hanum;
    gdth_ha_str *ha;
    ulong flags;
    Scsi_Cmnd *cmnd;
    unchar b;

    TRACE2(("gdth_eh_bus_reset()\n"));

    hanum = NUMDATA(scp->device->host)->hanum;
    b = virt_ctr ? NUMDATA(scp->device->host)->busnum : scp->device->channel;
    ha    = HADATA(gdth_ctr_tab[hanum]);

    /* clear command tab */
    spin_lock_irqsave(&ha->smp_lock, flags);
    for (i = 0; i < GDTH_MAXCMDS; ++i) {
        cmnd = ha->cmd_tab[i].cmnd;
        if (!SPECIAL_SCP(cmnd) && cmnd->device->channel == b)
            ha->cmd_tab[i].cmnd = UNUSED_CMND;
    }
    spin_unlock_irqrestore(&ha->smp_lock, flags);

    if (b == ha->virt_bus) {
        /* host drives */
        for (i = 0; i < MAX_HDRIVES; ++i) {
            if (ha->hdr[i].present) {
                spin_lock_irqsave(&ha->smp_lock, flags);
                gdth_polling = TRUE;
                while (gdth_test_busy(hanum))
                    gdth_delay(0);
                if (gdth_internal_cmd(hanum, CACHESERVICE, 
                                      GDT_CLUST_RESET, i, 0, 0))
                    ha->hdr[i].cluster_type &= ~CLUSTER_RESERVED;
                gdth_polling = FALSE;
                spin_unlock_irqrestore(&ha->smp_lock, flags);
            }
        }
    } else {
        /* raw devices */
        spin_lock_irqsave(&ha->smp_lock, flags);
        for (i = 0; i < MAXID; ++i)
            ha->raw[BUS_L2P(ha,b)].io_cnt[i] = 0;
        gdth_polling = TRUE;
        while (gdth_test_busy(hanum))
            gdth_delay(0);
        gdth_internal_cmd(hanum, SCSIRAWSERVICE, GDT_RESET_BUS,
                          BUS_L2P(ha,b), 0, 0);
        gdth_polling = FALSE;
        spin_unlock_irqrestore(&ha->smp_lock, flags);
    }
    return SUCCESS;
}

#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
static int gdth_bios_param(struct scsi_device *sdev,struct block_device *bdev,sector_t cap,int *ip)
#else
static int gdth_bios_param(Disk *disk,kdev_t dev,int *ip)
#endif
{
    unchar b, t;
    int hanum;
    gdth_ha_str *ha;
    struct scsi_device *sd;
    unsigned capacity;

#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
    sd = sdev;
    capacity = cap;
#else
    sd = disk->device;
    capacity = disk->capacity;
#endif
    hanum = NUMDATA(sd->host)->hanum;
    b = virt_ctr ? NUMDATA(sd->host)->busnum : sd->channel;
    t = sd->id;
    TRACE2(("gdth_bios_param() ha %d bus %d target %d\n", hanum, b, t)); 
    ha = HADATA(gdth_ctr_tab[hanum]);

    if (b != ha->virt_bus || ha->hdr[t].heads == 0) {
        /* raw device or host drive without mapping information */
        TRACE2(("Evaluate mapping\n"));
        gdth_eval_mapping(capacity,&ip[2],&ip[0],&ip[1]);
    } else {
        ip[0] = ha->hdr[t].heads;
        ip[1] = ha->hdr[t].secs;
        ip[2] = capacity / ip[0] / ip[1];
    }

    TRACE2(("gdth_bios_param(): %d heads, %d secs, %d cyls\n",
            ip[0],ip[1],ip[2]));
    return 0;
}


static int gdth_queuecommand(Scsi_Cmnd *scp,void (*done)(Scsi_Cmnd *))
{
    int hanum;
    int priority;

    TRACE(("gdth_queuecommand() cmd 0x%x\n", scp->cmnd[0]));
    
    scp->scsi_done = (void *)done;
    scp->SCp.have_data_in = 1;
    scp->SCp.phase = -1;
    scp->SCp.sent_command = -1;
    scp->SCp.Status = GDTH_MAP_NONE;
    scp->SCp.buffer = (struct scatterlist *)NULL;

    hanum = NUMDATA(scp->device->host)->hanum;
#ifdef GDTH_STATISTICS
    ++act_ios;
#endif

    priority = DEFAULT_PRI;
    if (scp->done == gdth_scsi_done)
        priority = scp->SCp.this_residual;
    else
        gdth_update_timeout(hanum, scp, scp->timeout_per_command * 6);

    gdth_putq( hanum, scp, priority );
    gdth_next( hanum );
    return 0;
}


static int gdth_open(struct inode *inode, struct file *filep)
{
    gdth_ha_str *ha;
    int i;

    for (i = 0; i < gdth_ctr_count; i++) {
        ha = HADATA(gdth_ctr_tab[i]);
        if (!ha->sdev)
            ha->sdev = scsi_get_host_dev(gdth_ctr_tab[i]);
    }

    TRACE(("gdth_open()\n"));
    return 0;
}

static int gdth_close(struct inode *inode, struct file *filep)
{
    TRACE(("gdth_close()\n"));
    return 0;
}

static int ioc_event(void __user *arg)
{
    gdth_ioctl_event evt;
    gdth_ha_str *ha;
    ulong flags;

    if (copy_from_user(&evt, arg, sizeof(gdth_ioctl_event)) ||
        evt.ionode >= gdth_ctr_count)
        return -EFAULT;
    ha = HADATA(gdth_ctr_tab[evt.ionode]);

    if (evt.erase == 0xff) {
        if (evt.event.event_source == ES_TEST)
            evt.event.event_data.size=sizeof(evt.event.event_data.eu.test); 
        else if (evt.event.event_source == ES_DRIVER)
            evt.event.event_data.size=sizeof(evt.event.event_data.eu.driver); 
        else if (evt.event.event_source == ES_SYNC)
            evt.event.event_data.size=sizeof(evt.event.event_data.eu.sync); 
        else
            evt.event.event_data.size=sizeof(evt.event.event_data.eu.async);
        spin_lock_irqsave(&ha->smp_lock, flags);
        gdth_store_event(ha, evt.event.event_source, evt.event.event_idx,
                         &evt.event.event_data);
        spin_unlock_irqrestore(&ha->smp_lock, flags);
    } else if (evt.erase == 0xfe) {
        gdth_clear_events();
    } else if (evt.erase == 0) {
        evt.handle = gdth_read_event(ha, evt.handle, &evt.event);
    } else {
        gdth_readapp_event(ha, evt.erase, &evt.event);
    }     
    if (copy_to_user(arg, &evt, sizeof(gdth_ioctl_event)))
        return -EFAULT;
    return 0;
}

static int ioc_lockdrv(void __user *arg)
{
    gdth_ioctl_lockdrv ldrv;
    unchar i, j;
    ulong flags;
    gdth_ha_str *ha;

    if (copy_from_user(&ldrv, arg, sizeof(gdth_ioctl_lockdrv)) ||
        ldrv.ionode >= gdth_ctr_count)
        return -EFAULT;
    ha = HADATA(gdth_ctr_tab[ldrv.ionode]);
 
    for (i = 0; i < ldrv.drive_cnt && i < MAX_HDRIVES; ++i) {
        j = ldrv.drives[i];
        if (j >= MAX_HDRIVES || !ha->hdr[j].present)
            continue;
        if (ldrv.lock) {
            spin_lock_irqsave(&ha->smp_lock, flags);
            ha->hdr[j].lock = 1;
            spin_unlock_irqrestore(&ha->smp_lock, flags);
            gdth_wait_completion(ldrv.ionode, ha->bus_cnt, j); 
            gdth_stop_timeout(ldrv.ionode, ha->bus_cnt, j); 
        } else {
            spin_lock_irqsave(&ha->smp_lock, flags);
            ha->hdr[j].lock = 0;
            spin_unlock_irqrestore(&ha->smp_lock, flags);
            gdth_start_timeout(ldrv.ionode, ha->bus_cnt, j); 
            gdth_next(ldrv.ionode); 
        }
    } 
    return 0;
}

static int ioc_resetdrv(void __user *arg, char *cmnd)
{
    gdth_ioctl_reset res;
    gdth_cmd_str cmd;
    int hanum;
    gdth_ha_str *ha;
    int rval;

    if (copy_from_user(&res, arg, sizeof(gdth_ioctl_reset)) ||
        res.ionode >= gdth_ctr_count || res.number >= MAX_HDRIVES)
        return -EFAULT;
    hanum = res.ionode;
    ha = HADATA(gdth_ctr_tab[hanum]);
 
    if (!ha->hdr[res.number].present)
        return 0;
    memset(&cmd, 0, sizeof(gdth_cmd_str));
    cmd.Service = CACHESERVICE;
    cmd.OpCode = GDT_CLUST_RESET;
    if (ha->cache_feat & GDT_64BIT)
        cmd.u.cache64.DeviceNo = res.number;
    else
        cmd.u.cache.DeviceNo = res.number;

    rval = __gdth_execute(ha->sdev, &cmd, cmnd, 30, NULL);
    if (rval < 0)
        return rval;
    res.status = rval;

    if (copy_to_user(arg, &res, sizeof(gdth_ioctl_reset)))
        return -EFAULT;
    return 0;
}

static int ioc_general(void __user *arg, char *cmnd)
{
    gdth_ioctl_general gen;
    char *buf = NULL;
    ulong64 paddr; 
    int hanum;
    gdth_ha_str *ha;
    int rval;
        
    if (copy_from_user(&gen, arg, sizeof(gdth_ioctl_general)) ||
        gen.ionode >= gdth_ctr_count)
        return -EFAULT;
    hanum = gen.ionode; 
    ha = HADATA(gdth_ctr_tab[hanum]);
    if (gen.data_len + gen.sense_len != 0) {
        if (!(buf = gdth_ioctl_alloc(hanum, gen.data_len + gen.sense_len, 
                                     FALSE, &paddr)))
            return -EFAULT;
        if (copy_from_user(buf, arg + sizeof(gdth_ioctl_general),  
                           gen.data_len + gen.sense_len)) {
            gdth_ioctl_free(hanum, gen.data_len+gen.sense_len, buf, paddr);
            return -EFAULT;
        }

        if (gen.command.OpCode == GDT_IOCTL) {
            gen.command.u.ioctl.p_param = paddr;
        } else if (gen.command.Service == CACHESERVICE) {
            if (ha->cache_feat & GDT_64BIT) {
                /* copy elements from 32-bit IOCTL structure */
                gen.command.u.cache64.BlockCnt = gen.command.u.cache.BlockCnt;
                gen.command.u.cache64.BlockNo = gen.command.u.cache.BlockNo;
                gen.command.u.cache64.DeviceNo = gen.command.u.cache.DeviceNo;
                /* addresses */
                if (ha->cache_feat & SCATTER_GATHER) {
                    gen.command.u.cache64.DestAddr = (ulong64)-1;
                    gen.command.u.cache64.sg_canz = 1;
                    gen.command.u.cache64.sg_lst[0].sg_ptr = paddr;
                    gen.command.u.cache64.sg_lst[0].sg_len = gen.data_len;
                    gen.command.u.cache64.sg_lst[1].sg_len = 0;
                } else {
                    gen.command.u.cache64.DestAddr = paddr;
                    gen.command.u.cache64.sg_canz = 0;
                }
            } else {
                if (ha->cache_feat & SCATTER_GATHER) {
                    gen.command.u.cache.DestAddr = 0xffffffff;
                    gen.command.u.cache.sg_canz = 1;
                    gen.command.u.cache.sg_lst[0].sg_ptr = (ulong32)paddr;
                    gen.command.u.cache.sg_lst[0].sg_len = gen.data_len;
                    gen.command.u.cache.sg_lst[1].sg_len = 0;
                } else {
                    gen.command.u.cache.DestAddr = paddr;
                    gen.command.u.cache.sg_canz = 0;
                }
            }
        } else if (gen.command.Service == SCSIRAWSERVICE) {
            if (ha->raw_feat & GDT_64BIT) {
                /* copy elements from 32-bit IOCTL structure */
                char cmd[16];
                gen.command.u.raw64.sense_len = gen.command.u.raw.sense_len;
                gen.command.u.raw64.bus = gen.command.u.raw.bus;
                gen.command.u.raw64.lun = gen.command.u.raw.lun;
                gen.command.u.raw64.target = gen.command.u.raw.target;
                memcpy(cmd, gen.command.u.raw.cmd, 16);
                memcpy(gen.command.u.raw64.cmd, cmd, 16);
                gen.command.u.raw64.clen = gen.command.u.raw.clen;
                gen.command.u.raw64.sdlen = gen.command.u.raw.sdlen;
                gen.command.u.raw64.direction = gen.command.u.raw.direction;
                /* addresses */
                if (ha->raw_feat & SCATTER_GATHER) {
                    gen.command.u.raw64.sdata = (ulong64)-1;
                    gen.command.u.raw64.sg_ranz = 1;
                    gen.command.u.raw64.sg_lst[0].sg_ptr = paddr;
                    gen.command.u.raw64.sg_lst[0].sg_len = gen.data_len;
                    gen.command.u.raw64.sg_lst[1].sg_len = 0;
                } else {
                    gen.command.u.raw64.sdata = paddr;
                    gen.command.u.raw64.sg_ranz = 0;
                }
                gen.command.u.raw64.sense_data = paddr + gen.data_len;
            } else {
                if (ha->raw_feat & SCATTER_GATHER) {
                    gen.command.u.raw.sdata = 0xffffffff;
                    gen.command.u.raw.sg_ranz = 1;
                    gen.command.u.raw.sg_lst[0].sg_ptr = (ulong32)paddr;
                    gen.command.u.raw.sg_lst[0].sg_len = gen.data_len;
                    gen.command.u.raw.sg_lst[1].sg_len = 0;
                } else {
                    gen.command.u.raw.sdata = paddr;
                    gen.command.u.raw.sg_ranz = 0;
                }
                gen.command.u.raw.sense_data = (ulong32)paddr + gen.data_len;
            }
        } else {
            gdth_ioctl_free(hanum, gen.data_len+gen.sense_len, buf, paddr);
            return -EFAULT;
        }
    }

    rval = __gdth_execute(ha->sdev, &gen.command, cmnd, gen.timeout, &gen.info);
    if (rval < 0)
        return rval;
    gen.status = rval;

    if (copy_to_user(arg + sizeof(gdth_ioctl_general), buf, 
                     gen.data_len + gen.sense_len)) {
        gdth_ioctl_free(hanum, gen.data_len+gen.sense_len, buf, paddr);
        return -EFAULT; 
    } 
    if (copy_to_user(arg, &gen, 
        sizeof(gdth_ioctl_general) - sizeof(gdth_cmd_str))) {
        gdth_ioctl_free(hanum, gen.data_len+gen.sense_len, buf, paddr);
        return -EFAULT;
    }
    gdth_ioctl_free(hanum, gen.data_len+gen.sense_len, buf, paddr);
    return 0;
}
 
static int ioc_hdrlist(void __user *arg, char *cmnd)
{
    gdth_ioctl_rescan *rsc;
    gdth_cmd_str *cmd;
    gdth_ha_str *ha;
    unchar i;
    int hanum, rc = -ENOMEM;
    u32 cluster_type = 0;

    rsc = kmalloc(sizeof(*rsc), GFP_KERNEL);
    cmd = kmalloc(sizeof(*cmd), GFP_KERNEL);
    if (!rsc || !cmd)
        goto free_fail;

    if (copy_from_user(rsc, arg, sizeof(gdth_ioctl_rescan)) ||
        rsc->ionode >= gdth_ctr_count) {
        rc = -EFAULT;
        goto free_fail;
    }
    hanum = rsc->ionode;
    ha = HADATA(gdth_ctr_tab[hanum]);
    memset(cmd, 0, sizeof(gdth_cmd_str));
   
    for (i = 0; i < MAX_HDRIVES; ++i) { 
        if (!ha->hdr[i].present) {
            rsc->hdr_list[i].bus = 0xff; 
            continue;
        } 
        rsc->hdr_list[i].bus = ha->virt_bus;
        rsc->hdr_list[i].target = i;
        rsc->hdr_list[i].lun = 0;
        rsc->hdr_list[i].cluster_type = ha->hdr[i].cluster_type;
        if (ha->hdr[i].cluster_type & CLUSTER_DRIVE) { 
            cmd->Service = CACHESERVICE;
            cmd->OpCode = GDT_CLUST_INFO;
            if (ha->cache_feat & GDT_64BIT)
                cmd->u.cache64.DeviceNo = i;
            else
                cmd->u.cache.DeviceNo = i;
            if (__gdth_execute(ha->sdev, cmd, cmnd, 30, &cluster_type) == S_OK)
                rsc->hdr_list[i].cluster_type = cluster_type;
        }
    } 

    if (copy_to_user(arg, rsc, sizeof(gdth_ioctl_rescan)))
        rc = -EFAULT;
    else
        rc = 0;

free_fail:
    kfree(rsc);
    kfree(cmd);
    return rc;
}

static int ioc_rescan(void __user *arg, char *cmnd)
{
    gdth_ioctl_rescan *rsc;
    gdth_cmd_str *cmd;
    ushort i, status, hdr_cnt;
    ulong32 info;
    int hanum, cyls, hds, secs;
    int rc = -ENOMEM;
    ulong flags;
    gdth_ha_str *ha; 

    rsc = kmalloc(sizeof(*rsc), GFP_KERNEL);
    cmd = kmalloc(sizeof(*cmd), GFP_KERNEL);
    if (!cmd || !rsc)
        goto free_fail;

    if (copy_from_user(rsc, arg, sizeof(gdth_ioctl_rescan)) ||
        rsc->ionode >= gdth_ctr_count) {
        rc = -EFAULT;
        goto free_fail;
    }
    hanum = rsc->ionode;
    ha = HADATA(gdth_ctr_tab[hanum]);
    memset(cmd, 0, sizeof(gdth_cmd_str));

    if (rsc->flag == 0) {
        /* old method: re-init. cache service */
        cmd->Service = CACHESERVICE;
        if (ha->cache_feat & GDT_64BIT) {
            cmd->OpCode = GDT_X_INIT_HOST;
            cmd->u.cache64.DeviceNo = LINUX_OS;
        } else {
            cmd->OpCode = GDT_INIT;
            cmd->u.cache.DeviceNo = LINUX_OS;
        }

        status = __gdth_execute(ha->sdev, cmd, cmnd, 30, &info);
        i = 0;
        hdr_cnt = (status == S_OK ? (ushort)info : 0);
    } else {
        i = rsc->hdr_no;
        hdr_cnt = i + 1;
    }

    for (; i < hdr_cnt && i < MAX_HDRIVES; ++i) {
        cmd->Service = CACHESERVICE;
        cmd->OpCode = GDT_INFO;
        if (ha->cache_feat & GDT_64BIT) 
            cmd->u.cache64.DeviceNo = i;
        else 
            cmd->u.cache.DeviceNo = i;

        status = __gdth_execute(ha->sdev, cmd, cmnd, 30, &info);

        spin_lock_irqsave(&ha->smp_lock, flags);
        rsc->hdr_list[i].bus = ha->virt_bus;
        rsc->hdr_list[i].target = i;
        rsc->hdr_list[i].lun = 0;
        if (status != S_OK) {
            ha->hdr[i].present = FALSE;
        } else {
            ha->hdr[i].present = TRUE;
            ha->hdr[i].size = info;
            /* evaluate mapping */
            ha->hdr[i].size &= ~SECS32;
            gdth_eval_mapping(ha->hdr[i].size,&cyls,&hds,&secs); 
            ha->hdr[i].heads = hds;
            ha->hdr[i].secs = secs;
            /* round size */
            ha->hdr[i].size = cyls * hds * secs;
        }
        spin_unlock_irqrestore(&ha->smp_lock, flags);
        if (status != S_OK)
            continue; 
        
        /* extended info, if GDT_64BIT, for drives > 2 TB */
        /* but we need ha->info2, not yet stored in scp->SCp */

        /* devtype, cluster info, R/W attribs */
        cmd->Service = CACHESERVICE;
        cmd->OpCode = GDT_DEVTYPE;
        if (ha->cache_feat & GDT_64BIT) 
            cmd->u.cache64.DeviceNo = i;
        else
            cmd->u.cache.DeviceNo = i;

        status = __gdth_execute(ha->sdev, cmd, cmnd, 30, &info);

        spin_lock_irqsave(&ha->smp_lock, flags);
        ha->hdr[i].devtype = (status == S_OK ? (ushort)info : 0);
        spin_unlock_irqrestore(&ha->smp_lock, flags);

        cmd->Service = CACHESERVICE;
        cmd->OpCode = GDT_CLUST_INFO;
        if (ha->cache_feat & GDT_64BIT) 
            cmd->u.cache64.DeviceNo = i;
        else
            cmd->u.cache.DeviceNo = i;

        status = __gdth_execute(ha->sdev, cmd, cmnd, 30, &info);

        spin_lock_irqsave(&ha->smp_lock, flags);
        ha->hdr[i].cluster_type = 
            ((status == S_OK && !shared_access) ? (ushort)info : 0);
        spin_unlock_irqrestore(&ha->smp_lock, flags);
        rsc->hdr_list[i].cluster_type = ha->hdr[i].cluster_type;

        cmd->Service = CACHESERVICE;
        cmd->OpCode = GDT_RW_ATTRIBS;
        if (ha->cache_feat & GDT_64BIT) 
            cmd->u.cache64.DeviceNo = i;
        else
            cmd->u.cache.DeviceNo = i;

        status = __gdth_execute(ha->sdev, cmd, cmnd, 30, &info);

        spin_lock_irqsave(&ha->smp_lock, flags);
        ha->hdr[i].rw_attribs = (status == S_OK ? (ushort)info : 0);
        spin_unlock_irqrestore(&ha->smp_lock, flags);
    }
 
    if (copy_to_user(arg, rsc, sizeof(gdth_ioctl_rescan)))
        rc = -EFAULT;
    else
        rc = 0;

free_fail:
    kfree(rsc);
    kfree(cmd);
    return rc;
}
  
static int gdth_ioctl(struct inode *inode, struct file *filep,
                      unsigned int cmd, unsigned long arg)
{
    gdth_ha_str *ha; 
    Scsi_Cmnd *scp;
    ulong flags;
    char cmnd[MAX_COMMAND_SIZE];   
    void __user *argp = (void __user *)arg;

    memset(cmnd, 0xff, 12);
    
    TRACE(("gdth_ioctl() cmd 0x%x\n", cmd));
 
    switch (cmd) {
      case GDTIOCTL_CTRCNT:
      { 
        int cnt = gdth_ctr_count;
        if (put_user(cnt, (int __user *)argp))
                return -EFAULT;
        break;
      }

      case GDTIOCTL_DRVERS:
      { 
        int ver = (GDTH_VERSION<<8) | GDTH_SUBVERSION;
        if (put_user(ver, (int __user *)argp))
                return -EFAULT;
        break;
      }
      
      case GDTIOCTL_OSVERS:
      { 
        gdth_ioctl_osvers osv; 

        osv.version = (unchar)(LINUX_VERSION_CODE >> 16);
        osv.subversion = (unchar)(LINUX_VERSION_CODE >> 8);
        osv.revision = (ushort)(LINUX_VERSION_CODE & 0xff);
        if (copy_to_user(argp, &osv, sizeof(gdth_ioctl_osvers)))
                return -EFAULT;
        break;
      }

      case GDTIOCTL_CTRTYPE:
      { 
        gdth_ioctl_ctrtype ctrt;
        
        if (copy_from_user(&ctrt, argp, sizeof(gdth_ioctl_ctrtype)) ||
            ctrt.ionode >= gdth_ctr_count)
            return -EFAULT;
        ha = HADATA(gdth_ctr_tab[ctrt.ionode]);
        if (ha->type == GDT_ISA || ha->type == GDT_EISA) {
            ctrt.type = (unchar)((ha->stype>>20) - 0x10);
        } else {
            if (ha->type != GDT_PCIMPR) {
                ctrt.type = (unchar)((ha->stype<<4) + 6);
            } else {
                ctrt.type = 
                    (ha->oem_id == OEM_ID_INTEL ? 0xfd : 0xfe);
                if (ha->stype >= 0x300)
                    ctrt.ext_type = 0x6000 | ha->subdevice_id;
                else 
                    ctrt.ext_type = 0x6000 | ha->stype;
            }
            ctrt.device_id = ha->stype;
            ctrt.sub_device_id = ha->subdevice_id;
        }
        ctrt.info = ha->brd_phys;
        ctrt.oem_id = ha->oem_id;
        if (copy_to_user(argp, &ctrt, sizeof(gdth_ioctl_ctrtype)))
            return -EFAULT;
        break;
      }
        
      case GDTIOCTL_GENERAL:
        return ioc_general(argp, cmnd);

      case GDTIOCTL_EVENT:
        return ioc_event(argp);

      case GDTIOCTL_LOCKDRV:
        return ioc_lockdrv(argp);

      case GDTIOCTL_LOCKCHN:
      {
        gdth_ioctl_lockchn lchn;
        unchar i, j;

        if (copy_from_user(&lchn, argp, sizeof(gdth_ioctl_lockchn)) ||
            lchn.ionode >= gdth_ctr_count)
            return -EFAULT;
        ha = HADATA(gdth_ctr_tab[lchn.ionode]);
        
        i = lchn.channel;
        if (i < ha->bus_cnt) {
            if (lchn.lock) {
                spin_lock_irqsave(&ha->smp_lock, flags);
                ha->raw[i].lock = 1;
                spin_unlock_irqrestore(&ha->smp_lock, flags);
                for (j = 0; j < ha->tid_cnt; ++j) {
                    gdth_wait_completion(lchn.ionode, i, j); 
                    gdth_stop_timeout(lchn.ionode, i, j); 
                }
            } else {
                spin_lock_irqsave(&ha->smp_lock, flags);
                ha->raw[i].lock = 0;
                spin_unlock_irqrestore(&ha->smp_lock, flags);
                for (j = 0; j < ha->tid_cnt; ++j) {
                    gdth_start_timeout(lchn.ionode, i, j); 
                    gdth_next(lchn.ionode); 
                }
            }
        } 
        break;
      }

      case GDTIOCTL_RESCAN:
        return ioc_rescan(argp, cmnd);

      case GDTIOCTL_HDRLIST:
        return ioc_hdrlist(argp, cmnd);

      case GDTIOCTL_RESET_BUS:
      {
        gdth_ioctl_reset res;
        int hanum, rval;

        if (copy_from_user(&res, argp, sizeof(gdth_ioctl_reset)) ||
            res.ionode >= gdth_ctr_count)
            return -EFAULT;
        hanum = res.ionode; 
        ha = HADATA(gdth_ctr_tab[hanum]);

#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
        scp  = kmalloc(sizeof(*scp), GFP_KERNEL);
        if (!scp)
            return -ENOMEM;
        memset(scp, 0, sizeof(*scp));
        scp->device = ha->sdev;
        scp->cmd_len = 12;
        scp->use_sg = 0;
        scp->device->channel = virt_ctr ? 0 : res.number;
        rval = gdth_eh_bus_reset(scp);
        res.status = (rval == SUCCESS ? S_OK : S_GENERR);
        kfree(scp);
#else
        scp  = scsi_allocate_device(ha->sdev, 1, FALSE);
        if (!scp)
            return -ENOMEM;
        scp->cmd_len = 12;
        scp->use_sg = 0;
        scp->channel = virt_ctr ? 0 : res.number;
        rval = gdth_eh_bus_reset(scp);
        res.status = (rval == SUCCESS ? S_OK : S_GENERR);
        scsi_release_command(scp);
#endif
        if (copy_to_user(argp, &res, sizeof(gdth_ioctl_reset)))
            return -EFAULT;
        break;
      }

      case GDTIOCTL_RESET_DRV:
        return ioc_resetdrv(argp, cmnd);

      default:
        break; 
    }
    return 0;
}


/* flush routine */
static void gdth_flush(int hanum)
{
    int             i;
    gdth_ha_str     *ha;
    gdth_cmd_str    gdtcmd;
    char            cmnd[MAX_COMMAND_SIZE];   
    memset(cmnd, 0xff, MAX_COMMAND_SIZE);

    TRACE2(("gdth_flush() hanum %d\n",hanum));
    ha = HADATA(gdth_ctr_tab[hanum]);

    for (i = 0; i < MAX_HDRIVES; ++i) {
        if (ha->hdr[i].present) {
            gdtcmd.BoardNode = LOCALBOARD;
            gdtcmd.Service = CACHESERVICE;
            gdtcmd.OpCode = GDT_FLUSH;
            if (ha->cache_feat & GDT_64BIT) { 
                gdtcmd.u.cache64.DeviceNo = i;
                gdtcmd.u.cache64.BlockNo = 1;
                gdtcmd.u.cache64.sg_canz = 0;
            } else {
                gdtcmd.u.cache.DeviceNo = i;
                gdtcmd.u.cache.BlockNo = 1;
                gdtcmd.u.cache.sg_canz = 0;
            }
            TRACE2(("gdth_flush(): flush ha %d drive %d\n", hanum, i));

            gdth_execute(gdth_ctr_tab[hanum], &gdtcmd, cmnd, 30, NULL);
        }
    }
}

/* shutdown routine */
static int gdth_halt(struct notifier_block *nb, ulong event, void *buf)
{
    int             hanum;
#ifndef __alpha__
    gdth_cmd_str    gdtcmd;
    char            cmnd[MAX_COMMAND_SIZE];   
#endif

    if (notifier_disabled)
        return NOTIFY_OK;

    TRACE2(("gdth_halt() event %d\n",(int)event));
    if (event != SYS_RESTART && event != SYS_HALT && event != SYS_POWER_OFF)
        return NOTIFY_DONE;

    notifier_disabled = 1;
    printk("GDT-HA: Flushing all host drives .. ");
    for (hanum = 0; hanum < gdth_ctr_count; ++hanum) {
        gdth_flush(hanum);

#ifndef __alpha__
        /* controller reset */
        memset(cmnd, 0xff, MAX_COMMAND_SIZE);
        gdtcmd.BoardNode = LOCALBOARD;
        gdtcmd.Service = CACHESERVICE;
        gdtcmd.OpCode = GDT_RESET;
        TRACE2(("gdth_halt(): reset controller %d\n", hanum));
        gdth_execute(gdth_ctr_tab[hanum], &gdtcmd, cmnd, 10, NULL);
#endif
    }
    printk("Done.\n");

#ifdef GDTH_STATISTICS
    del_timer(&gdth_timer);
#endif
    return NOTIFY_OK;
}

#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
/* configure lun */
static int gdth_slave_configure(struct scsi_device *sdev)
{
    scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun);
    sdev->skip_ms_page_3f = 1;
    sdev->skip_ms_page_8 = 1;
    return 0;
}
#endif

#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
static struct scsi_host_template driver_template = {
#else
static Scsi_Host_Template driver_template = {
#endif
        .proc_name              = "gdth", 
        .proc_info              = gdth_proc_info,
        .name                   = "GDT SCSI Disk Array Controller",
        .detect                 = gdth_detect, 
        .release                = gdth_release,
        .info                   = gdth_info, 
        .queuecommand           = gdth_queuecommand,
        .eh_bus_reset_handler   = gdth_eh_bus_reset,
        .bios_param             = gdth_bios_param,
        .can_queue              = GDTH_MAXCMDS,
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
        .slave_configure        = gdth_slave_configure,
#endif
        .this_id                = -1,
        .sg_tablesize           = GDTH_MAXSG,
        .cmd_per_lun            = GDTH_MAXC_P_L,
        .unchecked_isa_dma      = 1,
        .use_clustering         = ENABLE_CLUSTERING,
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
        .use_new_eh_code        = 1,
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,20)
        .highmem_io             = 1,
#endif
#endif
};

#include "scsi_module.c"
#ifndef MODULE
__setup("gdth=", option_setup);
#endif