summaryrefslogblamecommitdiff
path: root/drivers/scsi/gdth.h
blob: cc4882fb97ad073c787de7c9a65c09e9107bcd92 (plain) (tree)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946

















































































































































































































































































































































































































































































































































































































































































































































































































































































































































































                                                                                        
                                     
     
                                    

















































































                                                                               
                                               
                                                                     
     
                                                     

      
      
#ifndef _GDTH_H
#define _GDTH_H

/*
 * Header file for the GDT Disk Array/Storage RAID controllers driver for Linux
 * 
 * gdth.h Copyright (C) 1995-03 ICP vortex, Achim Leubner
 * See gdth.c for further informations and 
 * below for supported controller types
 *
 * <achim_leubner@adaptec.com>
 *
 * $Id: gdth.h,v 1.57 2004/03/31 11:52:09 achim Exp $
 */

#include <linux/version.h>
#include <linux/types.h>

#ifndef TRUE
#define TRUE 1
#endif
#ifndef FALSE
#define FALSE 0
#endif

/* defines, macros */

/* driver version */
#define GDTH_VERSION_STR        "3.04"
#define GDTH_VERSION            3
#define GDTH_SUBVERSION         4

/* protocol version */
#define PROTOCOL_VERSION        1

/* OEM IDs */
#define OEM_ID_ICP      0x941c
#define OEM_ID_INTEL    0x8000

/* controller classes */
#define GDT_ISA         0x01                    /* ISA controller */
#define GDT_EISA        0x02                    /* EISA controller */
#define GDT_PCI         0x03                    /* PCI controller */
#define GDT_PCINEW      0x04                    /* new PCI controller */
#define GDT_PCIMPR      0x05                    /* PCI MPR controller */
/* GDT_EISA, controller subtypes EISA */
#define GDT3_ID         0x0130941c              /* GDT3000/3020 */
#define GDT3A_ID        0x0230941c              /* GDT3000A/3020A/3050A */
#define GDT3B_ID        0x0330941c              /* GDT3000B/3010A */
/* GDT_ISA */
#define GDT2_ID         0x0120941c              /* GDT2000/2020 */

/* vendor ID, device IDs (PCI) */
/* these defines should already exist in <linux/pci.h> */
#ifndef PCI_VENDOR_ID_VORTEX
#define PCI_VENDOR_ID_VORTEX            0x1119  /* PCI controller vendor ID */
#endif
#ifndef PCI_VENDOR_ID_INTEL
#define PCI_VENDOR_ID_INTEL             0x8086  
#endif

#ifndef PCI_DEVICE_ID_VORTEX_GDT60x0
/* GDT_PCI */
#define PCI_DEVICE_ID_VORTEX_GDT60x0    0       /* GDT6000/6020/6050 */
#define PCI_DEVICE_ID_VORTEX_GDT6000B   1       /* GDT6000B/6010 */
/* GDT_PCINEW */
#define PCI_DEVICE_ID_VORTEX_GDT6x10    2       /* GDT6110/6510 */
#define PCI_DEVICE_ID_VORTEX_GDT6x20    3       /* GDT6120/6520 */
#define PCI_DEVICE_ID_VORTEX_GDT6530    4       /* GDT6530 */
#define PCI_DEVICE_ID_VORTEX_GDT6550    5       /* GDT6550 */
/* GDT_PCINEW, wide/ultra SCSI controllers */
#define PCI_DEVICE_ID_VORTEX_GDT6x17    6       /* GDT6117/6517 */
#define PCI_DEVICE_ID_VORTEX_GDT6x27    7       /* GDT6127/6527 */
#define PCI_DEVICE_ID_VORTEX_GDT6537    8       /* GDT6537 */
#define PCI_DEVICE_ID_VORTEX_GDT6557    9       /* GDT6557/6557-ECC */
/* GDT_PCINEW, wide SCSI controllers */
#define PCI_DEVICE_ID_VORTEX_GDT6x15    10      /* GDT6115/6515 */
#define PCI_DEVICE_ID_VORTEX_GDT6x25    11      /* GDT6125/6525 */
#define PCI_DEVICE_ID_VORTEX_GDT6535    12      /* GDT6535 */
#define PCI_DEVICE_ID_VORTEX_GDT6555    13      /* GDT6555/6555-ECC */
#endif

#ifndef PCI_DEVICE_ID_VORTEX_GDT6x17RP
/* GDT_MPR, RP series, wide/ultra SCSI */
#define PCI_DEVICE_ID_VORTEX_GDT6x17RP  0x100   /* GDT6117RP/GDT6517RP */
#define PCI_DEVICE_ID_VORTEX_GDT6x27RP  0x101   /* GDT6127RP/GDT6527RP */
#define PCI_DEVICE_ID_VORTEX_GDT6537RP  0x102   /* GDT6537RP */
#define PCI_DEVICE_ID_VORTEX_GDT6557RP  0x103   /* GDT6557RP */
/* GDT_MPR, RP series, narrow/ultra SCSI */
#define PCI_DEVICE_ID_VORTEX_GDT6x11RP  0x104   /* GDT6111RP/GDT6511RP */
#define PCI_DEVICE_ID_VORTEX_GDT6x21RP  0x105   /* GDT6121RP/GDT6521RP */
#endif
#ifndef PCI_DEVICE_ID_VORTEX_GDT6x17RD
/* GDT_MPR, RD series, wide/ultra SCSI */
#define PCI_DEVICE_ID_VORTEX_GDT6x17RD  0x110   /* GDT6117RD/GDT6517RD */
#define PCI_DEVICE_ID_VORTEX_GDT6x27RD  0x111   /* GDT6127RD/GDT6527RD */
#define PCI_DEVICE_ID_VORTEX_GDT6537RD  0x112   /* GDT6537RD */
#define PCI_DEVICE_ID_VORTEX_GDT6557RD  0x113   /* GDT6557RD */
/* GDT_MPR, RD series, narrow/ultra SCSI */
#define PCI_DEVICE_ID_VORTEX_GDT6x11RD  0x114   /* GDT6111RD/GDT6511RD */
#define PCI_DEVICE_ID_VORTEX_GDT6x21RD  0x115   /* GDT6121RD/GDT6521RD */
/* GDT_MPR, RD series, wide/ultra2 SCSI */
#define PCI_DEVICE_ID_VORTEX_GDT6x18RD  0x118   /* GDT6118RD/GDT6518RD/
                                                   GDT6618RD */
#define PCI_DEVICE_ID_VORTEX_GDT6x28RD  0x119   /* GDT6128RD/GDT6528RD/
                                                   GDT6628RD */
#define PCI_DEVICE_ID_VORTEX_GDT6x38RD  0x11A   /* GDT6538RD/GDT6638RD */
#define PCI_DEVICE_ID_VORTEX_GDT6x58RD  0x11B   /* GDT6558RD/GDT6658RD */
/* GDT_MPR, RN series (64-bit PCI), wide/ultra2 SCSI */
#define PCI_DEVICE_ID_VORTEX_GDT7x18RN  0x168   /* GDT7118RN/GDT7518RN/
                                                   GDT7618RN */
#define PCI_DEVICE_ID_VORTEX_GDT7x28RN  0x169   /* GDT7128RN/GDT7528RN/
                                                   GDT7628RN */
#define PCI_DEVICE_ID_VORTEX_GDT7x38RN  0x16A   /* GDT7538RN/GDT7638RN */
#define PCI_DEVICE_ID_VORTEX_GDT7x58RN  0x16B   /* GDT7558RN/GDT7658RN */
#endif

#ifndef PCI_DEVICE_ID_VORTEX_GDT6x19RD
/* GDT_MPR, RD series, Fibre Channel */
#define PCI_DEVICE_ID_VORTEX_GDT6x19RD  0x210   /* GDT6519RD/GDT6619RD */
#define PCI_DEVICE_ID_VORTEX_GDT6x29RD  0x211   /* GDT6529RD/GDT6629RD */
/* GDT_MPR, RN series (64-bit PCI), Fibre Channel */
#define PCI_DEVICE_ID_VORTEX_GDT7x19RN  0x260   /* GDT7519RN/GDT7619RN */
#define PCI_DEVICE_ID_VORTEX_GDT7x29RN  0x261   /* GDT7529RN/GDT7629RN */
#endif

#ifndef PCI_DEVICE_ID_VORTEX_GDTMAXRP
/* GDT_MPR, last device ID */
#define PCI_DEVICE_ID_VORTEX_GDTMAXRP   0x2ff   
#endif

#ifndef PCI_DEVICE_ID_VORTEX_GDTNEWRX
/* new GDT Rx Controller */
#define PCI_DEVICE_ID_VORTEX_GDTNEWRX   0x300
#endif

#ifndef PCI_DEVICE_ID_VORTEX_GDTNEWRX2
/* new(2) GDT Rx Controller */
#define PCI_DEVICE_ID_VORTEX_GDTNEWRX2  0x301
#endif        

#ifndef PCI_DEVICE_ID_INTEL_SRC
/* Intel Storage RAID Controller */
#define PCI_DEVICE_ID_INTEL_SRC         0x600
#endif

#ifndef PCI_DEVICE_ID_INTEL_SRC_XSCALE
/* Intel Storage RAID Controller */
#define PCI_DEVICE_ID_INTEL_SRC_XSCALE  0x601
#endif

/* limits */
#define GDTH_SCRATCH    PAGE_SIZE               /* 4KB scratch buffer */
#define GDTH_MAXCMDS    120
#define GDTH_MAXC_P_L   16                      /* max. cmds per lun */
#define GDTH_MAX_RAW    2                       /* max. cmds per raw device */
#define MAXOFFSETS      128
#define MAXHA           16
#define MAXID           127
#define MAXLUN          8
#define MAXBUS          6
#define MAX_EVENTS      100                     /* event buffer count */
#define MAX_RES_ARGS    40                      /* device reservation, 
                                                   must be a multiple of 4 */
#define MAXCYLS         1024
#define HEADS           64
#define SECS            32                      /* mapping 64*32 */
#define MEDHEADS        127
#define MEDSECS         63                      /* mapping 127*63 */
#define BIGHEADS        255
#define BIGSECS         63                      /* mapping 255*63 */

/* special command ptr. */
#define UNUSED_CMND     ((Scsi_Cmnd *)-1)
#define INTERNAL_CMND   ((Scsi_Cmnd *)-2)
#define SCREEN_CMND     ((Scsi_Cmnd *)-3)
#define SPECIAL_SCP(p)  (p==UNUSED_CMND || p==INTERNAL_CMND || p==SCREEN_CMND)

/* controller services */
#define SCSIRAWSERVICE  3
#define CACHESERVICE    9
#define SCREENSERVICE   11

/* screenservice defines */
#define MSG_INV_HANDLE  -1                      /* special message handle */
#define MSGLEN          16                      /* size of message text */
#define MSG_SIZE        34                      /* size of message structure */
#define MSG_REQUEST     0                       /* async. event: message */

/* cacheservice defines */
#define SECTOR_SIZE     0x200                   /* always 512 bytes per sec. */

/* DPMEM constants */
#define DPMEM_MAGIC     0xC0FFEE11
#define IC_HEADER_BYTES 48
#define IC_QUEUE_BYTES  4
#define DPMEM_COMMAND_OFFSET    IC_HEADER_BYTES+IC_QUEUE_BYTES*MAXOFFSETS

/* cluster_type constants */
#define CLUSTER_DRIVE         1
#define CLUSTER_MOUNTED       2
#define CLUSTER_RESERVED      4
#define CLUSTER_RESERVE_STATE (CLUSTER_DRIVE|CLUSTER_MOUNTED|CLUSTER_RESERVED)

/* commands for all services, cache service */
#define GDT_INIT        0                       /* service initialization */
#define GDT_READ        1                       /* read command */
#define GDT_WRITE       2                       /* write command */
#define GDT_INFO        3                       /* information about devices */
#define GDT_FLUSH       4                       /* flush dirty cache buffers */
#define GDT_IOCTL       5                       /* ioctl command */
#define GDT_DEVTYPE     9                       /* additional information */
#define GDT_MOUNT       10                      /* mount cache device */
#define GDT_UNMOUNT     11                      /* unmount cache device */
#define GDT_SET_FEAT    12                      /* set feat. (scatter/gather) */
#define GDT_GET_FEAT    13                      /* get features */
#define GDT_WRITE_THR   16                      /* write through */
#define GDT_READ_THR    17                      /* read through */
#define GDT_EXT_INFO    18                      /* extended info */
#define GDT_RESET       19                      /* controller reset */
#define GDT_RESERVE_DRV 20                      /* reserve host drive */
#define GDT_RELEASE_DRV 21                      /* release host drive */
#define GDT_CLUST_INFO  22                      /* cluster info */
#define GDT_RW_ATTRIBS  23                      /* R/W attribs (write thru,..)*/
#define GDT_CLUST_RESET 24                      /* releases the cluster drives*/
#define GDT_FREEZE_IO   25                      /* freezes all IOs */
#define GDT_UNFREEZE_IO 26                      /* unfreezes all IOs */
#define GDT_X_INIT_HOST 29                      /* ext. init: 64 bit support */
#define GDT_X_INFO      30                      /* ext. info for drives>2TB */

/* raw service commands */
#define GDT_RESERVE     14                      /* reserve dev. to raw serv. */
#define GDT_RELEASE     15                      /* release device */
#define GDT_RESERVE_ALL 16                      /* reserve all devices */
#define GDT_RELEASE_ALL 17                      /* release all devices */
#define GDT_RESET_BUS   18                      /* reset bus */
#define GDT_SCAN_START  19                      /* start device scan */
#define GDT_SCAN_END    20                      /* stop device scan */  
#define GDT_X_INIT_RAW  21                      /* ext. init: 64 bit support */

/* screen service commands */
#define GDT_REALTIME    3                       /* realtime clock to screens. */
#define GDT_X_INIT_SCR  4                       /* ext. init: 64 bit support */

/* IOCTL command defines */
#define SCSI_DR_INFO    0x00                    /* SCSI drive info */                   
#define SCSI_CHAN_CNT   0x05                    /* SCSI channel count */   
#define SCSI_DR_LIST    0x06                    /* SCSI drive list */
#define SCSI_DEF_CNT    0x15                    /* grown/primary defects */
#define DSK_STATISTICS  0x4b                    /* SCSI disk statistics */
#define IOCHAN_DESC     0x5d                    /* description of IO channel */
#define IOCHAN_RAW_DESC 0x5e                    /* description of raw IO chn. */
#define L_CTRL_PATTERN  0x20000000L             /* SCSI IOCTL mask */
#define ARRAY_INFO      0x12                    /* array drive info */
#define ARRAY_DRV_LIST  0x0f                    /* array drive list */
#define ARRAY_DRV_LIST2 0x34                    /* array drive list (new) */
#define LA_CTRL_PATTERN 0x10000000L             /* array IOCTL mask */
#define CACHE_DRV_CNT   0x01                    /* cache drive count */
#define CACHE_DRV_LIST  0x02                    /* cache drive list */
#define CACHE_INFO      0x04                    /* cache info */
#define CACHE_CONFIG    0x05                    /* cache configuration */
#define CACHE_DRV_INFO  0x07                    /* cache drive info */
#define BOARD_FEATURES  0x15                    /* controller features */
#define BOARD_INFO      0x28                    /* controller info */
#define SET_PERF_MODES  0x82                    /* set mode (coalescing,..) */
#define GET_PERF_MODES  0x83                    /* get mode */
#define CACHE_READ_OEM_STRING_RECORD 0x84       /* read OEM string record */ 
#define HOST_GET        0x10001L                /* get host drive list */
#define IO_CHANNEL      0x00020000L             /* default IO channel */
#define INVALID_CHANNEL 0x0000ffffL             /* invalid channel */

/* service errors */
#define S_OK            1                       /* no error */
#define S_GENERR        6                       /* general error */
#define S_BSY           7                       /* controller busy */
#define S_CACHE_UNKNOWN 12                      /* cache serv.: drive unknown */
#define S_RAW_SCSI      12                      /* raw serv.: target error */
#define S_RAW_ILL       0xff                    /* raw serv.: illegal */
#define S_NOFUNC        -2                      /* unknown function */
#define S_CACHE_RESERV  -24                     /* cache: reserv. conflict */   

/* timeout values */
#define INIT_RETRIES    100000                  /* 100000 * 1ms = 100s */
#define INIT_TIMEOUT    100000                  /* 100000 * 1ms = 100s */
#define POLL_TIMEOUT    10000                   /* 10000 * 1ms = 10s */

/* priorities */
#define DEFAULT_PRI     0x20
#define IOCTL_PRI       0x10
#define HIGH_PRI        0x08

/* data directions */
#define GDTH_DATA_IN    0x01000000L             /* data from target */
#define GDTH_DATA_OUT   0x00000000L             /* data to target */

/* BMIC registers (EISA controllers) */
#define ID0REG          0x0c80                  /* board ID */
#define EINTENABREG     0x0c89                  /* interrupt enable */
#define SEMA0REG        0x0c8a                  /* command semaphore */
#define SEMA1REG        0x0c8b                  /* status semaphore */
#define LDOORREG        0x0c8d                  /* local doorbell */
#define EDENABREG       0x0c8e                  /* EISA system doorbell enab. */
#define EDOORREG        0x0c8f                  /* EISA system doorbell */
#define MAILBOXREG      0x0c90                  /* mailbox reg. (16 bytes) */
#define EISAREG         0x0cc0                  /* EISA configuration */

/* DMA memory mappings */
#define GDTH_MAP_NONE   0
#define GDTH_MAP_SINGLE 1
#define GDTH_MAP_SG     2
#define GDTH_MAP_IOCTL  3 

/* other defines */
#define LINUX_OS        8                       /* used for cache optim. */
#define SCATTER_GATHER  1                       /* s/g feature */
#define SECS32          0x1f                    /* round capacity */
#define BIOS_ID_OFFS    0x10                    /* offset contr-ID in ISABIOS */
#define LOCALBOARD      0                       /* board node always 0 */
#define ASYNCINDEX      0                       /* cmd index async. event */
#define SPEZINDEX       1                       /* cmd index unknown service */
#define COALINDEX       (GDTH_MAXCMDS + 2)

/* features */
#define SCATTER_GATHER  1                       /* s/g feature */
#define GDT_WR_THROUGH  0x100                   /* WRITE_THROUGH supported */
#define GDT_64BIT       0x200                   /* 64bit / drv>2TB support */

#include "gdth_ioctl.h"

/* screenservice message */
typedef struct {                               
    ulong32     msg_handle;                     /* message handle */
    ulong32     msg_len;                        /* size of message */
    ulong32     msg_alen;                       /* answer length */
    unchar      msg_answer;                     /* answer flag */
    unchar      msg_ext;                        /* more messages */
    unchar      msg_reserved[2];
    char        msg_text[MSGLEN+2];             /* the message text */
} PACKED gdth_msg_str;


/* IOCTL data structures */

/* Status coalescing buffer for returning multiple requests per interrupt */
typedef struct {
    ulong32     status;
    ulong32     ext_status;
    ulong32     info0;
    ulong32     info1;
} PACKED gdth_coal_status;

/* performance mode data structure */
typedef struct {
    ulong32     version;            /* The version of this IOCTL structure. */
    ulong32     st_mode;            /* 0=dis., 1=st_buf_addr1 valid, 2=both  */
    ulong32     st_buff_addr1;      /* physical address of status buffer 1 */
    ulong32     st_buff_u_addr1;    /* reserved for 64 bit addressing */
    ulong32     st_buff_indx1;      /* reserved command idx. for this buffer */
    ulong32     st_buff_addr2;      /* physical address of status buffer 1 */
    ulong32     st_buff_u_addr2;    /* reserved for 64 bit addressing */
    ulong32     st_buff_indx2;      /* reserved command idx. for this buffer */
    ulong32     st_buff_size;       /* size of each buffer in bytes */
    ulong32     cmd_mode;           /* 0 = mode disabled, 1 = cmd_buff_addr1 */ 
    ulong32     cmd_buff_addr1;     /* physical address of cmd buffer 1 */   
    ulong32     cmd_buff_u_addr1;   /* reserved for 64 bit addressing */
    ulong32     cmd_buff_indx1;     /* cmd buf addr1 unique identifier */
    ulong32     cmd_buff_addr2;     /* physical address of cmd buffer 1 */   
    ulong32     cmd_buff_u_addr2;   /* reserved for 64 bit addressing */
    ulong32     cmd_buff_indx2;     /* cmd buf addr1 unique identifier */
    ulong32     cmd_buff_size;      /* size of each cmd bufer in bytes */
    ulong32     reserved1;
    ulong32     reserved2;
} PACKED gdth_perf_modes;

/* SCSI drive info */
typedef struct {
    unchar      vendor[8];                      /* vendor string */
    unchar      product[16];                    /* product string */
    unchar      revision[4];                    /* revision */
    ulong32     sy_rate;                        /* current rate for sync. tr. */
    ulong32     sy_max_rate;                    /* max. rate for sync. tr. */
    ulong32     no_ldrive;                      /* belongs to this log. drv.*/
    ulong32     blkcnt;                         /* number of blocks */
    ushort      blksize;                        /* size of block in bytes */
    unchar      available;                      /* flag: access is available */
    unchar      init;                           /* medium is initialized */
    unchar      devtype;                        /* SCSI devicetype */
    unchar      rm_medium;                      /* medium is removable */
    unchar      wp_medium;                      /* medium is write protected */
    unchar      ansi;                           /* SCSI I/II or III? */
    unchar      protocol;                       /* same as ansi */
    unchar      sync;                           /* flag: sync. transfer enab. */
    unchar      disc;                           /* flag: disconnect enabled */
    unchar      queueing;                       /* flag: command queing enab. */
    unchar      cached;                         /* flag: caching enabled */
    unchar      target_id;                      /* target ID of device */
    unchar      lun;                            /* LUN id of device */
    unchar      orphan;                         /* flag: drive fragment */
    ulong32     last_error;                     /* sense key or drive state */
    ulong32     last_result;                    /* result of last command */
    ulong32     check_errors;                   /* err. in last surface check */
    unchar      percent;                        /* progress for surface check */
    unchar      last_check;                     /* IOCTRL operation */
    unchar      res[2];
    ulong32     flags;                          /* from 1.19/2.19: raw reserv.*/
    unchar      multi_bus;                      /* multi bus dev? (fibre ch.) */
    unchar      mb_status;                      /* status: available? */
    unchar      res2[2];
    unchar      mb_alt_status;                  /* status on second bus */
    unchar      mb_alt_bid;                     /* number of second bus */
    unchar      mb_alt_tid;                     /* target id on second bus */
    unchar      res3;
    unchar      fc_flag;                        /* from 1.22/2.22: info valid?*/
    unchar      res4;
    ushort      fc_frame_size;                  /* frame size (bytes) */
    char        wwn[8];                         /* world wide name */
} PACKED gdth_diskinfo_str;

/* get SCSI channel count  */
typedef struct {
    ulong32     channel_no;                     /* number of channel */
    ulong32     drive_cnt;                      /* drive count */
    unchar      siop_id;                        /* SCSI processor ID */
    unchar      siop_state;                     /* SCSI processor state */ 
} PACKED gdth_getch_str;

/* get SCSI drive numbers */
typedef struct {
    ulong32     sc_no;                          /* SCSI channel */
    ulong32     sc_cnt;                         /* sc_list[] elements */
    ulong32     sc_list[MAXID];                 /* minor device numbers */
} PACKED gdth_drlist_str;

/* get grown/primary defect count */
typedef struct {
    unchar      sddc_type;                      /* 0x08: grown, 0x10: prim. */
    unchar      sddc_format;                    /* list entry format */
    unchar      sddc_len;                       /* list entry length */
    unchar      sddc_res;
    ulong32     sddc_cnt;                       /* entry count */
} PACKED gdth_defcnt_str;

/* disk statistics */
typedef struct {
    ulong32     bid;                            /* SCSI channel */
    ulong32     first;                          /* first SCSI disk */
    ulong32     entries;                        /* number of elements */
    ulong32     count;                          /* (R) number of init. el. */
    ulong32     mon_time;                       /* time stamp */
    struct {
        unchar  tid;                            /* target ID */
        unchar  lun;                            /* LUN */
        unchar  res[2];
        ulong32 blk_size;                       /* block size in bytes */
        ulong32 rd_count;                       /* bytes read */
        ulong32 wr_count;                       /* bytes written */
        ulong32 rd_blk_count;                   /* blocks read */
        ulong32 wr_blk_count;                   /* blocks written */
        ulong32 retries;                        /* retries */
        ulong32 reassigns;                      /* reassigns */
    } PACKED list[1];
} PACKED gdth_dskstat_str;

/* IO channel header */
typedef struct {
    ulong32     version;                        /* version (-1UL: newest) */
    unchar      list_entries;                   /* list entry count */
    unchar      first_chan;                     /* first channel number */
    unchar      last_chan;                      /* last channel number */
    unchar      chan_count;                     /* (R) channel count */
    ulong32     list_offset;                    /* offset of list[0] */
} PACKED gdth_iochan_header;

/* get IO channel description */
typedef struct {
    gdth_iochan_header  hdr;
    struct {
        ulong32         address;                /* channel address */
        unchar          type;                   /* type (SCSI, FCAL) */
        unchar          local_no;               /* local number */
        ushort          features;               /* channel features */
    } PACKED list[MAXBUS];
} PACKED gdth_iochan_str;

/* get raw IO channel description */
typedef struct {
    gdth_iochan_header  hdr;
    struct {
        unchar      proc_id;                    /* processor id */
        unchar      proc_defect;                /* defect ? */
        unchar      reserved[2];
    } PACKED list[MAXBUS];
} PACKED gdth_raw_iochan_str;

/* array drive component */
typedef struct {
    ulong32     al_controller;                  /* controller ID */
    unchar      al_cache_drive;                 /* cache drive number */
    unchar      al_status;                      /* cache drive state */
    unchar      al_res[2];     
} PACKED gdth_arraycomp_str;

/* array drive information */
typedef struct {
    unchar      ai_type;                        /* array type (RAID0,4,5) */
    unchar      ai_cache_drive_cnt;             /* active cachedrives */
    unchar      ai_state;                       /* array drive state */
    unchar      ai_master_cd;                   /* master cachedrive */
    ulong32     ai_master_controller;           /* ID of master controller */
    ulong32     ai_size;                        /* user capacity [sectors] */
    ulong32     ai_striping_size;               /* striping size [sectors] */
    ulong32     ai_secsize;                     /* sector size [bytes] */
    ulong32     ai_err_info;                    /* failed cache drive */
    unchar      ai_name[8];                     /* name of the array drive */
    unchar      ai_controller_cnt;              /* number of controllers */
    unchar      ai_removable;                   /* flag: removable */
    unchar      ai_write_protected;             /* flag: write protected */
    unchar      ai_devtype;                     /* type: always direct access */
    gdth_arraycomp_str  ai_drives[35];          /* drive components: */
    unchar      ai_drive_entries;               /* number of drive components */
    unchar      ai_protected;                   /* protection flag */
    unchar      ai_verify_state;                /* state of a parity verify */
    unchar      ai_ext_state;                   /* extended array drive state */
    unchar      ai_expand_state;                /* array expand state (>=2.18)*/
    unchar      ai_reserved[3];
} PACKED gdth_arrayinf_str;

/* get array drive list */
typedef struct {
    ulong32     controller_no;                  /* controller no. */
    unchar      cd_handle;                      /* master cachedrive */
    unchar      is_arrayd;                      /* Flag: is array drive? */
    unchar      is_master;                      /* Flag: is array master? */
    unchar      is_parity;                      /* Flag: is parity drive? */
    unchar      is_hotfix;                      /* Flag: is hotfix drive? */
    unchar      res[3];
} PACKED gdth_alist_str;

typedef struct {
    ulong32     entries_avail;                  /* allocated entries */
    ulong32     entries_init;                   /* returned entries */
    ulong32     first_entry;                    /* first entry number */
    ulong32     list_offset;                    /* offset of following list */
    gdth_alist_str list[1];                     /* list */
} PACKED gdth_arcdl_str;

/* cache info/config IOCTL */
typedef struct {
    ulong32     version;                        /* firmware version */
    ushort      state;                          /* cache state (on/off) */
    ushort      strategy;                       /* cache strategy */
    ushort      write_back;                     /* write back state (on/off) */
    ushort      block_size;                     /* cache block size */
} PACKED gdth_cpar_str;

typedef struct {
    ulong32     csize;                          /* cache size */
    ulong32     read_cnt;                       /* read/write counter */
    ulong32     write_cnt;
    ulong32     tr_hits;                        /* hits */
    ulong32     sec_hits;
    ulong32     sec_miss;                       /* misses */
} PACKED gdth_cstat_str;

typedef struct {
    gdth_cpar_str   cpar;
    gdth_cstat_str  cstat;
} PACKED gdth_cinfo_str;

/* cache drive info */
typedef struct {
    unchar      cd_name[8];                     /* cache drive name */
    ulong32     cd_devtype;                     /* SCSI devicetype */
    ulong32     cd_ldcnt;                       /* number of log. drives */
    ulong32     cd_last_error;                  /* last error */
    unchar      cd_initialized;                 /* drive is initialized */
    unchar      cd_removable;                   /* media is removable */
    unchar      cd_write_protected;             /* write protected */
    unchar      cd_flags;                       /* Pool Hot Fix? */
    ulong32     ld_blkcnt;                      /* number of blocks */
    ulong32     ld_blksize;                     /* blocksize */
    ulong32     ld_dcnt;                        /* number of disks */
    ulong32     ld_slave;                       /* log. drive index */
    ulong32     ld_dtype;                       /* type of logical drive */
    ulong32     ld_last_error;                  /* last error */
    unchar      ld_name[8];                     /* log. drive name */
    unchar      ld_error;                       /* error */
} PACKED gdth_cdrinfo_str;

/* OEM string */
typedef struct {
    ulong32     ctl_version;
    ulong32     file_major_version;
    ulong32     file_minor_version;
    ulong32     buffer_size;
    ulong32     cpy_count;
    ulong32     ext_error;
    ulong32     oem_id;
    ulong32     board_id;
} PACKED gdth_oem_str_params;

typedef struct {
    unchar      product_0_1_name[16];
    unchar      product_4_5_name[16];
    unchar      product_cluster_name[16];
    unchar      product_reserved[16];
    unchar      scsi_cluster_target_vendor_id[16];
    unchar      cluster_raid_fw_name[16];
    unchar      oem_brand_name[16];
    unchar      oem_raid_type[16];
    unchar      bios_type[13];
    unchar      bios_title[50];
    unchar      oem_company_name[37];
    ulong32     pci_id_1;
    ulong32     pci_id_2;
    unchar      validation_status[80];
    unchar      reserved_1[4];
    unchar      scsi_host_drive_inquiry_vendor_id[16];
    unchar      library_file_template[16];
    unchar      reserved_2[16];
    unchar      tool_name_1[32];
    unchar      tool_name_2[32];
    unchar      tool_name_3[32];
    unchar      oem_contact_1[84];
    unchar      oem_contact_2[84];
    unchar      oem_contact_3[84];
} PACKED gdth_oem_str;

typedef struct {
    gdth_oem_str_params params;
    gdth_oem_str        text;
} PACKED gdth_oem_str_ioctl;

/* board features */
typedef struct {
    unchar      chaining;                       /* Chaining supported */
    unchar      striping;                       /* Striping (RAID-0) supp. */
    unchar      mirroring;                      /* Mirroring (RAID-1) supp. */
    unchar      raid;                           /* RAID-4/5/10 supported */
} PACKED gdth_bfeat_str;

/* board info IOCTL */
typedef struct {
    ulong32     ser_no;                         /* serial no. */
    unchar      oem_id[2];                      /* OEM ID */
    ushort      ep_flags;                       /* eprom flags */
    ulong32     proc_id;                        /* processor ID */
    ulong32     memsize;                        /* memory size (bytes) */
    unchar      mem_banks;                      /* memory banks */
    unchar      chan_type;                      /* channel type */
    unchar      chan_count;                     /* channel count */
    unchar      rdongle_pres;                   /* dongle present? */
    ulong32     epr_fw_ver;                     /* (eprom) firmware version */
    ulong32     upd_fw_ver;                     /* (update) firmware version */
    ulong32     upd_revision;                   /* update revision */
    char        type_string[16];                /* controller name */
    char        raid_string[16];                /* RAID firmware name */
    unchar      update_pres;                    /* update present? */
    unchar      xor_pres;                       /* XOR engine present? */
    unchar      prom_type;                      /* ROM type (eprom/flash) */
    unchar      prom_count;                     /* number of ROM devices */
    ulong32     dup_pres;                       /* duplexing module present? */
    ulong32     chan_pres;                      /* number of expansion chn. */
    ulong32     mem_pres;                       /* memory expansion inst. ? */
    unchar      ft_bus_system;                  /* fault bus supported? */
    unchar      subtype_valid;                  /* board_subtype valid? */
    unchar      board_subtype;                  /* subtype/hardware level */
    unchar      ramparity_pres;                 /* RAM parity check hardware? */
} PACKED gdth_binfo_str; 

/* get host drive info */
typedef struct {
    char        name[8];                        /* host drive name */
    ulong32     size;                           /* size (sectors) */
    unchar      host_drive;                     /* host drive number */
    unchar      log_drive;                      /* log. drive (master) */
    unchar      reserved;
    unchar      rw_attribs;                     /* r/w attribs */
    ulong32     start_sec;                      /* start sector */
} PACKED gdth_hentry_str;

typedef struct {
    ulong32     entries;                        /* entry count */
    ulong32     offset;                         /* offset of entries */
    unchar      secs_p_head;                    /* sectors/head */
    unchar      heads_p_cyl;                    /* heads/cylinder */
    unchar      reserved;
    unchar      clust_drvtype;                  /* cluster drive type */
    ulong32     location;                       /* controller number */
    gdth_hentry_str entry[MAX_HDRIVES];         /* entries */
} PACKED gdth_hget_str;    


/* DPRAM structures */

/* interface area ISA/PCI */
typedef struct {
    unchar              S_Cmd_Indx;             /* special command */
    unchar volatile     S_Status;               /* status special command */
    ushort              reserved1;
    ulong32             S_Info[4];              /* add. info special command */
    unchar volatile     Sema0;                  /* command semaphore */
    unchar              reserved2[3];
    unchar              Cmd_Index;              /* command number */
    unchar              reserved3[3];
    ushort volatile     Status;                 /* command status */
    ushort              Service;                /* service(for async.events) */
    ulong32             Info[2];                /* additional info */
    struct {
        ushort          offset;                 /* command offs. in the DPRAM*/
        ushort          serv_id;                /* service */
    } PACKED comm_queue[MAXOFFSETS];            /* command queue */
    ulong32             bios_reserved[2];
    unchar              gdt_dpr_cmd[1];         /* commands */
} PACKED gdt_dpr_if;

/* SRAM structure PCI controllers */
typedef struct {
    ulong32     magic;                          /* controller ID from BIOS */
    ushort      need_deinit;                    /* switch betw. BIOS/driver */
    unchar      switch_support;                 /* see need_deinit */
    unchar      padding[9];
    unchar      os_used[16];                    /* OS code per service */
    unchar      unused[28];
    unchar      fw_magic;                       /* contr. ID from firmware */
} PACKED gdt_pci_sram;

/* SRAM structure EISA controllers (but NOT GDT3000/3020) */
typedef struct {
    unchar      os_used[16];                    /* OS code per service */
    ushort      need_deinit;                    /* switch betw. BIOS/driver */
    unchar      switch_support;                 /* see need_deinit */
    unchar      padding;
} PACKED gdt_eisa_sram;


/* DPRAM ISA controllers */
typedef struct {
    union {
        struct {
            unchar      bios_used[0x3c00-32];   /* 15KB - 32Bytes BIOS */
            ulong32     magic;                  /* controller (EISA) ID */
            ushort      need_deinit;            /* switch betw. BIOS/driver */
            unchar      switch_support;         /* see need_deinit */
            unchar      padding[9];
            unchar      os_used[16];            /* OS code per service */
        } PACKED dp_sram;
        unchar          bios_area[0x4000];      /* 16KB reserved for BIOS */
    } bu;
    union {
        gdt_dpr_if      ic;                     /* interface area */
        unchar          if_area[0x3000];        /* 12KB for interface */
    } u;
    struct {
        unchar          memlock;                /* write protection DPRAM */
        unchar          event;                  /* release event */
        unchar          irqen;                  /* board interrupts enable */
        unchar          irqdel;                 /* acknowledge board int. */
        unchar volatile Sema1;                  /* status semaphore */
        unchar          rq;                     /* IRQ/DRQ configuration */
    } PACKED io;
} PACKED gdt2_dpram_str;

/* DPRAM PCI controllers */
typedef struct {
    union {
        gdt_dpr_if      ic;                     /* interface area */
        unchar          if_area[0xff0-sizeof(gdt_pci_sram)];
    } u;
    gdt_pci_sram        gdt6sr;                 /* SRAM structure */
    struct {
        unchar          unused0[1];
        unchar volatile Sema1;                  /* command semaphore */
        unchar          unused1[3];
        unchar          irqen;                  /* board interrupts enable */
        unchar          unused2[2];
        unchar          event;                  /* release event */
        unchar          unused3[3];
        unchar          irqdel;                 /* acknowledge board int. */
        unchar          unused4[3];
    } PACKED io;
} PACKED gdt6_dpram_str;

/* PLX register structure (new PCI controllers) */
typedef struct {
    unchar              cfg_reg;        /* DPRAM cfg.(2:below 1MB,0:anywhere)*/
    unchar              unused1[0x3f];
    unchar volatile     sema0_reg;              /* command semaphore */
    unchar volatile     sema1_reg;              /* status semaphore */
    unchar              unused2[2];
    ushort volatile     status;                 /* command status */
    ushort              service;                /* service */
    ulong32             info[2];                /* additional info */
    unchar              unused3[0x10];
    unchar              ldoor_reg;              /* PCI to local doorbell */
    unchar              unused4[3];
    unchar volatile     edoor_reg;              /* local to PCI doorbell */
    unchar              unused5[3];
    unchar              control0;               /* control0 register(unused) */
    unchar              control1;               /* board interrupts enable */
    unchar              unused6[0x16];
} PACKED gdt6c_plx_regs;

/* DPRAM new PCI controllers */
typedef struct {
    union {
        gdt_dpr_if      ic;                     /* interface area */
        unchar          if_area[0x4000-sizeof(gdt_pci_sram)];
    } u;
    gdt_pci_sram        gdt6sr;                 /* SRAM structure */
} PACKED gdt6c_dpram_str;

/* i960 register structure (PCI MPR controllers) */
typedef struct {
    unchar              unused1[16];
    unchar volatile     sema0_reg;              /* command semaphore */
    unchar              unused2;
    unchar volatile     sema1_reg;              /* status semaphore */
    unchar              unused3;
    ushort volatile     status;                 /* command status */
    ushort              service;                /* service */
    ulong32             info[2];                /* additional info */
    unchar              ldoor_reg;              /* PCI to local doorbell */
    unchar              unused4[11];
    unchar volatile     edoor_reg;              /* local to PCI doorbell */
    unchar              unused5[7];
    unchar              edoor_en_reg;           /* board interrupts enable */
    unchar              unused6[27];
    ulong32             unused7[939];         
    ulong32             severity;       
    char                evt_str[256];           /* event string */
} PACKED gdt6m_i960_regs;

/* DPRAM PCI MPR controllers */
typedef struct {
    gdt6m_i960_regs     i960r;                  /* 4KB i960 registers */
    union {
        gdt_dpr_if      ic;                     /* interface area */
        unchar          if_area[0x3000-sizeof(gdt_pci_sram)];
    } u;
    gdt_pci_sram        gdt6sr;                 /* SRAM structure */
} PACKED gdt6m_dpram_str;


/* PCI resources */
typedef struct {
    struct pci_dev      *pdev;
    ushort              vendor_id;              /* vendor (ICP, Intel, ..) */
    ushort              device_id;              /* device ID (0,..,9) */
    ushort              subdevice_id;           /* sub device ID */
    unchar              bus;                    /* PCI bus */
    unchar              device_fn;              /* PCI device/function no. */
    ulong               dpmem;                  /* DPRAM address */
    ulong               io;                     /* IO address */
    ulong               io_mm;                  /* IO address mem. mapped */
    unchar              irq;                    /* IRQ */
} gdth_pci_str;


/* controller information structure */
typedef struct {
    ushort              oem_id;                 /* OEM */
    ushort              type;                   /* controller class */
    ulong32             stype;                  /* subtype (PCI: device ID) */
    ushort              subdevice_id;           /* sub device ID (PCI) */
    ushort              fw_vers;                /* firmware version */
    ushort              cache_feat;             /* feat. cache serv. (s/g,..)*/
    ushort              raw_feat;               /* feat. raw service (s/g,..)*/
    ushort              screen_feat;            /* feat. raw service (s/g,..)*/
    ushort              bmic;                   /* BMIC address (EISA) */
    void __iomem        *brd;                   /* DPRAM address */
    ulong32             brd_phys;               /* slot number/BIOS address */
    gdt6c_plx_regs      *plx;                   /* PLX regs (new PCI contr.) */
    gdth_cmd_str        *pccb;                  /* address command structure */
    ulong32             ccb_phys;               /* phys. address */
#ifdef INT_COAL
    gdth_coal_status    *coal_stat;             /* buffer for coalescing int.*/
    ulong64             coal_stat_phys;         /* phys. address */
#endif
    char                *pscratch;              /* scratch (DMA) buffer */
    ulong64             scratch_phys;           /* phys. address */
    unchar              scratch_busy;           /* in use? */
    unchar              dma64_support;          /* 64-bit DMA supported? */
    gdth_msg_str        *pmsg;                  /* message buffer */
    ulong64             msg_phys;               /* phys. address */
    unchar              scan_mode;              /* current scan mode */
    unchar              irq;                    /* IRQ */
    unchar              drq;                    /* DRQ (ISA controllers) */
    ushort              status;                 /* command status */
    ushort              service;                /* service/firmware ver./.. */
    ulong32             info;
    ulong32             info2;                  /* additional info */
    Scsi_Cmnd           *req_first;             /* top of request queue */
    struct {
        unchar          present;                /* Flag: host drive present? */
        unchar          is_logdrv;              /* Flag: log. drive (master)? */
        unchar          is_arraydrv;            /* Flag: array drive? */
        unchar          is_master;              /* Flag: array drive master? */
        unchar          is_parity;              /* Flag: parity drive? */
        unchar          is_hotfix;              /* Flag: hotfix drive? */
        unchar          master_no;              /* number of master drive */
        unchar          lock;                   /* drive locked? (hot plug) */
        unchar          heads;                  /* mapping */
        unchar          secs;
        ushort          devtype;                /* further information */
        ulong64         size;                   /* capacity */
        unchar          ldr_no;                 /* log. drive no. */
        unchar          rw_attribs;             /* r/w attributes */
        unchar          cluster_type;           /* cluster properties */
        unchar          media_changed;          /* Flag:MOUNT/UNMOUNT occured */
        ulong32         start_sec;              /* start sector */
    } hdr[MAX_LDRIVES];                         /* host drives */
    struct {
        unchar          lock;                   /* channel locked? (hot plug) */
        unchar          pdev_cnt;               /* physical device count */
        unchar          local_no;               /* local channel number */
        unchar          io_cnt[MAXID];          /* current IO count */
        ulong32         address;                /* channel address */
        ulong32         id_list[MAXID];         /* IDs of the phys. devices */
    } raw[MAXBUS];                              /* SCSI channels */
    struct {
        Scsi_Cmnd       *cmnd;                  /* pending request */
        ushort          service;                /* service */
    } cmd_tab[GDTH_MAXCMDS];                    /* table of pend. requests */
    unchar              bus_cnt;                /* SCSI bus count */
    unchar              tid_cnt;                /* Target ID count */
    unchar              bus_id[MAXBUS];         /* IOP IDs */
    unchar              virt_bus;               /* number of virtual bus */
    unchar              more_proc;              /* more /proc info supported */
    ushort              cmd_cnt;                /* command count in DPRAM */
    ushort              cmd_len;                /* length of actual command */
    ushort              cmd_offs_dpmem;         /* actual offset in DPRAM */
    ushort              ic_all_size;            /* sizeof DPRAM interf. area */
    gdth_cpar_str       cpar;                   /* controller cache par. */
    gdth_bfeat_str      bfeat;                  /* controller features */
    gdth_binfo_str      binfo;                  /* controller info */
    gdth_evt_data       dvr;                    /* event structure */
    spinlock_t          smp_lock;
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
    struct pci_dev      *pdev;
#endif
    char                oem_name[8];
#ifdef GDTH_DMA_STATISTICS
    ulong               dma32_cnt, dma64_cnt;   /* statistics: DMA buffer */
#endif
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
    struct scsi_device         *sdev;
#else
    struct scsi_device         sdev;
#endif
} gdth_ha_str;

/* structure for scsi_register(), SCSI bus != 0 */
typedef struct {
    ushort      hanum;
    ushort      busnum;
} gdth_num_str;

/* structure for scsi_register() */
typedef struct {
    gdth_num_str        numext;                 /* must be the first element */
    gdth_ha_str         haext;
    gdth_cmd_str        cmdext;
} gdth_ext_str;


/* INQUIRY data format */
typedef struct {
    unchar      type_qual;
    unchar      modif_rmb;
    unchar      version;
    unchar      resp_aenc;
    unchar      add_length;
    unchar      reserved1;
    unchar      reserved2;
    unchar      misc;
    unchar      vendor[8];
    unchar      product[16];
    unchar      revision[4];
} PACKED gdth_inq_data;

/* READ_CAPACITY data format */
typedef struct {
    ulong32     last_block_no;
    ulong32     block_length;
} PACKED gdth_rdcap_data;

/* READ_CAPACITY (16) data format */
typedef struct {
    ulong64     last_block_no;
    ulong32     block_length;
} PACKED gdth_rdcap16_data;

/* REQUEST_SENSE data format */
typedef struct {
    unchar      errorcode;
    unchar      segno;
    unchar      key;
    ulong32     info;
    unchar      add_length;
    ulong32     cmd_info;
    unchar      adsc;
    unchar      adsq;
    unchar      fruc;
    unchar      key_spec[3];
} PACKED gdth_sense_data;

/* MODE_SENSE data format */
typedef struct {
    struct {
        unchar  data_length;
        unchar  med_type;
        unchar  dev_par;
        unchar  bd_length;
    } PACKED hd;
    struct {
        unchar  dens_code;
        unchar  block_count[3];
        unchar  reserved;
        unchar  block_length[3];
    } PACKED bd;
} PACKED gdth_modep_data;

/* stack frame */
typedef struct {
    ulong       b[10];                          /* 32/64 bit compiler ! */
} PACKED gdth_stackframe;


/* function prototyping */

#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
int gdth_proc_info(struct Scsi_Host *, char *,char **,off_t,int,int);
#else
int gdth_proc_info(char *,char **,off_t,int,int,int);
#endif

#endif