-
Notifications
You must be signed in to change notification settings - Fork 53.3k
/
pci2220i.c
2915 lines (2715 loc) · 89.3 KB
/
pci2220i.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/****************************************************************************
* Perceptive Solutions, Inc. PCI-2220I device driver for Linux.
*
* pci2220i.c - Linux Host Driver for PCI-2220I EIDE RAID Adapters
*
* Copyright (c) 1997-1999 Perceptive Solutions, Inc.
* All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that redistributions of source
* code retain the above copyright notice and this comment without
* modification.
*
* Technical updates and product information at:
* http://www.psidisk.com
*
* Please send questions, comments, bug reports to:
* tech@psidisk.com Technical Support
*
*
* Revisions 1.10 Mar-26-1999
* - Updated driver for RAID and hot reconstruct support.
*
* Revisions 1.11 Mar-26-1999
* - Fixed spinlock and PCI configuration.
*
* Revision 2.00 December-1-1999
* - Added code for the PCI-2240I controller
* - Added code for ATAPI devices.
* - Double buffer for scatter/gather support
*
* Revision 2.10 March-27-2000
* - Added support for dynamic DMA
*
****************************************************************************/
#error Convert me to understand page+offset based scatterlists
//#define DEBUG 1
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/string.h>
#include <linux/slab.h>
#include <linux/pci.h>
#include <linux/ioport.h>
#include <linux/delay.h>
#include <linux/sched.h>
#include <linux/proc_fs.h>
#include <linux/stat.h>
#include <linux/blkdev.h>
#include <linux/timer.h>
#include <linux/spinlock.h>
#include <asm/dma.h>
#include <asm/system.h>
#include <asm/io.h>
#include "scsi.h"
#include <scsi/scsi_host.h>
#include "pci2220i.h"
#include "psi_dale.h"
#define PCI2220I_VERSION "2.10"
#define READ_CMD IDE_CMD_READ_MULTIPLE
#define WRITE_CMD IDE_CMD_WRITE_MULTIPLE
#define MAX_BUS_MASTER_BLOCKS SECTORSXFER // This is the maximum we can bus master
#ifdef DEBUG
#define DEB(x) x
#define STOP_HERE() {int st;for(st=0;st<100;st++){st=1;}}
#else
#define DEB(x)
#define STOP_HERE()
#endif
#define MAXADAPTER 4 // Increase this and the sizes of the arrays below, if you need more.
typedef struct
{
UCHAR byte6; // device select register image
UCHAR spigot; // spigot number
UCHAR spigots[2]; // RAID spigots
UCHAR deviceID[2]; // device ID codes
USHORT sectors; // number of sectors per track
USHORT heads; // number of heads
USHORT cylinders; // number of cylinders for this device
USHORT spareword; // placeholder
ULONG blocks; // number of blocks on device
DISK_MIRROR DiskMirror[2]; // RAID status and control
ULONG lastsectorlba[2]; // last addressable sector on the drive
USHORT raid; // RAID active flag
USHORT mirrorRecon;
UCHAR reconOn;
USHORT reconCount;
USHORT reconIsStarting; // indicate hot reconstruct is starting
UCHAR cmdDrqInt; // flag for command interrupt
UCHAR packet; // command packet size in bytes
} OUR_DEVICE, *POUR_DEVICE;
typedef struct
{
USHORT bigD; // identity is a PCI-2240I if true, otherwise a PCI-2220I
USHORT atapi; // this interface is for ATAPI devices only
ULONG regDmaDesc; // address of the DMA discriptor register for direction of transfer
ULONG regDmaCmdStat; // Byte #1 of DMA command status register
ULONG regDmaAddrPci; // 32 bit register for PCI address of DMA
ULONG regDmaAddrLoc; // 32 bit register for local bus address of DMA
ULONG regDmaCount; // 32 bit register for DMA transfer count
ULONG regDmaMode; // 32 bit register for DMA mode control
ULONG regRemap; // 32 bit local space remap
ULONG regDesc; // 32 bit local region descriptor
ULONG regRange; // 32 bit local range
ULONG regIrqControl; // 16 bit Interrupt enable/disable and status
ULONG regScratchPad; // scratch pad I/O base address
ULONG regBase; // Base I/O register for data space
ULONG regData; // data register I/O address
ULONG regError; // error register I/O address
ULONG regSectCount; // sector count register I/O address
ULONG regLba0; // least significant byte of LBA
ULONG regLba8; // next least significant byte of LBA
ULONG regLba16; // next most significan byte of LBA
ULONG regLba24; // head and most 4 significant bits of LBA
ULONG regStatCmd; // status on read and command on write register
ULONG regStatSel; // board status on read and spigot select on write register
ULONG regFail; // fail bits control register
ULONG regAltStat; // alternate status and drive control register
ULONG basePort; // PLX base I/O port
USHORT timingMode; // timing mode currently set for adapter
USHORT timingPIO; // TRUE if PIO timing is active
struct pci_dev *pcidev;
ULONG timingAddress; // address to use on adapter for current timing mode
ULONG irqOwned; // owned IRQ or zero if shared
UCHAR numberOfDrives; // saved number of drives on this controller
UCHAR failRegister; // current inverted data in fail register
OUR_DEVICE device[BIGD_MAXDRIVES];
DISK_MIRROR *raidData[BIGD_MAXDRIVES];
ULONG startSector;
USHORT sectorCount;
ULONG readCount;
UCHAR *currentSgBuffer;
ULONG currentSgCount;
USHORT nextSg;
UCHAR cmd;
Scsi_Cmnd *SCpnt;
POUR_DEVICE pdev; // current device opearating on
USHORT devInReconIndex;
USHORT expectingIRQ;
USHORT reconOn; // Hot reconstruct is to be done.
USHORT reconPhase; // Hot reconstruct operation is in progress.
ULONG reconSize;
USHORT demoFail; // flag for RAID failure demonstration
USHORT survivor;
USHORT failinprog;
struct timer_list reconTimer;
struct timer_list timer;
UCHAR *kBuffer;
dma_addr_t kBufferDma;
UCHAR reqSense;
UCHAR atapiCdb[16];
UCHAR atapiSpecial;
} ADAPTER2220I, *PADAPTER2220I;
#define HOSTDATA(host) ((PADAPTER2220I)&host->hostdata)
#define RECON_PHASE_READY 0x01
#define RECON_PHASE_COPY 0x02
#define RECON_PHASE_UPDATE 0x03
#define RECON_PHASE_LAST 0x04
#define RECON_PHASE_END 0x07
#define RECON_PHASE_MARKING 0x80
#define RECON_PHASE_FAILOVER 0xFF
static struct Scsi_Host *PsiHost[MAXADAPTER] = {NULL,}; // One for each adapter
static int NumAdapters = 0;
static int Installed = 0;
static SETUP DaleSetup;
static DISK_MIRROR DiskMirror[BIGD_MAXDRIVES];
static ULONG ModeArray[] = {DALE_DATA_MODE2, DALE_DATA_MODE3, DALE_DATA_MODE4, DALE_DATA_MODE5};
static ULONG ModeArray2[] = {BIGD_DATA_MODE2, BIGD_DATA_MODE3, BIGD_DATA_MODE4, BIGD_DATA_MODE5};
static void ReconTimerExpiry (unsigned long data);
/*******************************************************************************************************
* Name: Alarm
*
* Description: Sound the for the given device
*
* Parameters: padapter - Pointer adapter data structure.
* device - Device number.
*
* Returns: Nothing.
*
******************************************************************************************************/
static void Alarm (PADAPTER2220I padapter, UCHAR device)
{
UCHAR zc;
if ( padapter->bigD )
{
zc = device | (FAIL_ANY | FAIL_AUDIBLE);
if ( padapter->failRegister & FAIL_ANY )
zc |= FAIL_MULTIPLE;
padapter->failRegister = zc;
outb_p (~zc, padapter->regFail);
}
else
outb_p (0x3C | (1 << device), padapter->regFail); // sound alarm and set fail light
}
/****************************************************************
* Name: MuteAlarm :LOCAL
*
* Description: Mute the audible alarm.
*
* Parameters: padapter - Pointer adapter data structure.
*
* Returns: TRUE if drive does not assert DRQ in time.
*
****************************************************************/
static void MuteAlarm (PADAPTER2220I padapter)
{
UCHAR old;
if ( padapter->bigD )
{
padapter->failRegister &= ~FAIL_AUDIBLE;
outb_p (~padapter->failRegister, padapter->regFail);
}
else
{
old = (inb_p (padapter->regStatSel) >> 3) | (inb_p (padapter->regStatSel) & 0x83);
outb_p (old | 0x40, padapter->regFail);
}
}
/****************************************************************
* Name: WaitReady :LOCAL
*
* Description: Wait for device ready.
*
* Parameters: padapter - Pointer adapter data structure.
*
* Returns: TRUE if drive does not assert DRQ in time.
*
****************************************************************/
static int WaitReady (PADAPTER2220I padapter)
{
ULONG z;
UCHAR status;
for ( z = 0; z < (TIMEOUT_READY * 4); z++ )
{
status = inb_p (padapter->regStatCmd);
if ( (status & (IDE_STATUS_DRDY | IDE_STATUS_BUSY)) == IDE_STATUS_DRDY )
return 0;
udelay (250);
}
return status;
}
/****************************************************************
* Name: WaitReadyReset :LOCAL
*
* Description: Wait for device ready.
*
* Parameters: padapter - Pointer adapter data structure.
*
* Returns: TRUE if drive does not assert DRQ in time.
*
****************************************************************/
static int WaitReadyReset (PADAPTER2220I padapter)
{
ULONG z;
UCHAR status;
for ( z = 0; z < (125 * 16); z++ ) // wait up to 1/4 second
{
status = inb_p (padapter->regStatCmd);
if ( (status & (IDE_STATUS_DRDY | IDE_STATUS_BUSY)) == IDE_STATUS_DRDY )
{
DEB (printk ("\nPCI2220I: Reset took %ld mSec to be ready", z / 8));
return 0;
}
udelay (125);
}
DEB (printk ("\nPCI2220I: Reset took more than 2 Seconds to come ready, Disk Failure"));
return status;
}
/****************************************************************
* Name: WaitDrq :LOCAL
*
* Description: Wait for device ready for data transfer.
*
* Parameters: padapter - Pointer adapter data structure.
*
* Returns: TRUE if drive does not assert DRQ in time.
*
****************************************************************/
static int WaitDrq (PADAPTER2220I padapter)
{
ULONG z;
UCHAR status;
for ( z = 0; z < (TIMEOUT_DRQ * 4); z++ )
{
status = inb_p (padapter->regStatCmd);
if ( status & IDE_STATUS_DRQ )
return 0;
udelay (250);
}
return status;
}
/****************************************************************
* Name: AtapiWaitReady :LOCAL
*
* Description: Wait for device busy and DRQ to be cleared.
*
* Parameters: padapter - Pointer adapter data structure.
* msec - Number of milliseconds to wait.
*
* Returns: TRUE if drive does not clear busy in time.
*
****************************************************************/
static int AtapiWaitReady (PADAPTER2220I padapter, int msec)
{
int z;
for ( z = 0; z < (msec * 16); z++ )
{
if ( !(inb_p (padapter->regStatCmd) & (IDE_STATUS_BUSY | IDE_STATUS_DRQ)) )
return FALSE;
udelay (125);
}
return TRUE;
}
/****************************************************************
* Name: AtapiWaitDrq :LOCAL
*
* Description: Wait for device ready for data transfer.
*
* Parameters: padapter - Pointer adapter data structure.
* msec - Number of milliseconds to wait.
*
* Returns: TRUE if drive does not assert DRQ in time.
*
****************************************************************/
static int AtapiWaitDrq (PADAPTER2220I padapter, int msec)
{
ULONG z;
for ( z = 0; z < (msec * 16); z++ )
{
if ( inb_p (padapter->regStatCmd) & IDE_STATUS_DRQ )
return 0;
udelay (128);
}
return TRUE;
}
/****************************************************************
* Name: HardReset :LOCAL
*
* Description: Wait for device ready for data transfer.
*
* Parameters: padapter - Pointer adapter data structure.
* pdev - Pointer to device.
* spigot - Spigot number.
*
* Returns: TRUE if drive does not assert DRQ in time.
*
****************************************************************/
static int HardReset (PADAPTER2220I padapter, POUR_DEVICE pdev, UCHAR spigot)
{
DEB (printk ("\npci2220i:RESET spigot = %X devices = %d, %d", spigot, pdev->deviceID[0], pdev->deviceID[1]));
mdelay (100); // just wait 100 mSec to let drives flush
SelectSpigot (padapter, spigot | SEL_IRQ_OFF);
outb_p (0x0E, padapter->regAltStat); // reset the suvivor
udelay (100); // wait a little
outb_p (0x08, padapter->regAltStat); // clear the reset
udelay (100);
outb_p (0xA0, padapter->regLba24); // select the master drive
if ( WaitReadyReset (padapter) )
{
DEB (printk ("\npci2220i: master not ready after reset"));
return TRUE;
}
outb_p (0xB0, padapter->regLba24); // try the slave drive
if ( (inb_p (padapter->regStatCmd) & (IDE_STATUS_DRDY | IDE_STATUS_BUSY)) == IDE_STATUS_DRDY )
{
DEB (printk ("\nPCI2220I: initializing slave drive on spigot %X", spigot));
outb_p (SECTORSXFER, padapter->regSectCount);
WriteCommand (padapter, IDE_CMD_SET_MULTIPLE);
if ( WaitReady (padapter) )
{
DEB (printk ("\npci2220i: slave not ready after set multiple"));
return TRUE;
}
}
outb_p (0xA0, padapter->regLba24); // select the drive
outb_p (SECTORSXFER, padapter->regSectCount);
WriteCommand (padapter, IDE_CMD_SET_MULTIPLE);
if ( WaitReady (padapter) )
{
DEB (printk ("\npci2220i: master not ready after set multiple"));
return TRUE;
}
return FALSE;
}
/****************************************************************
* Name: AtapiReset :LOCAL
*
* Description: Wait for device ready for data transfer.
*
* Parameters: padapter - Pointer adapter data structure.
* pdev - Pointer to device.
*
* Returns: TRUE if drive does not come ready.
*
****************************************************************/
static int AtapiReset (PADAPTER2220I padapter, POUR_DEVICE pdev)
{
SelectSpigot (padapter, pdev->spigot);
AtapiDevice (padapter, pdev->byte6);
AtapiCountLo (padapter, 0);
AtapiCountHi (padapter, 0);
WriteCommand (padapter, IDE_COMMAND_ATAPI_RESET);
udelay (125);
if ( AtapiWaitReady (padapter, 1000) )
return TRUE;
if ( inb_p (padapter->regStatCmd) || (inb_p (padapter->regLba8) != 0x14) || (inb_p (padapter->regLba16) != 0xEB) )
return TRUE;
return FALSE;
}
/****************************************************************
* Name: WalkScatGath :LOCAL
*
* Description: Transfer data to/from scatter/gather buffers.
*
* Parameters: padapter - Pointer adapter data structure.
* datain - TRUE if data read.
* length - Number of bytes to transfer.
*
* Returns: Nothing.
*
****************************************************************/
static void WalkScatGath (PADAPTER2220I padapter, UCHAR datain, ULONG length)
{
ULONG count;
UCHAR *buffer = padapter->kBuffer;
while ( length )
{
count = ( length > padapter->currentSgCount ) ? padapter->currentSgCount : length;
if ( datain )
memcpy (padapter->currentSgBuffer, buffer, count);
else
memcpy (buffer, padapter->currentSgBuffer, count);
padapter->currentSgCount -= count;
if ( !padapter->currentSgCount )
{
if ( padapter->nextSg < padapter->SCpnt->use_sg )
{
padapter->currentSgBuffer = ((struct scatterlist *)padapter->SCpnt->request_buffer)[padapter->nextSg].address;
padapter->currentSgCount = ((struct scatterlist *)padapter->SCpnt->request_buffer)[padapter->nextSg].length;
padapter->nextSg++;
}
}
else
padapter->currentSgBuffer += count;
length -= count;
buffer += count;
}
}
/****************************************************************
* Name: BusMaster :LOCAL
*
* Description: Do a bus master I/O.
*
* Parameters: padapter - Pointer adapter data structure.
* datain - TRUE if data read.
* irq - TRUE if bus master interrupt expected.
*
* Returns: Nothing.
*
****************************************************************/
static void BusMaster (PADAPTER2220I padapter, UCHAR datain, UCHAR irq)
{
ULONG zl;
zl = ( padapter->sectorCount > MAX_BUS_MASTER_BLOCKS ) ? MAX_BUS_MASTER_BLOCKS : padapter->sectorCount;
padapter->sectorCount -= zl;
zl *= (ULONG)BYTES_PER_SECTOR;
if ( datain )
{
padapter->readCount = zl;
outb_p (8, padapter->regDmaDesc); // read operation
if ( padapter->bigD )
{
if ( irq && !padapter->sectorCount )
outb_p (0x0C, padapter->regDmaMode); // interrupt on
else
outb_p (0x08, padapter->regDmaMode); // no interrupt
}
else
{
if ( irq && !padapter->sectorCount )
outb_p (0x05, padapter->regDmaMode); // interrupt on
else
outb_p (0x01, padapter->regDmaMode); // no interrupt
}
}
else
{
outb_p (0x00, padapter->regDmaDesc); // write operation
if ( padapter->bigD )
outb_p (0x08, padapter->regDmaMode); // no interrupt
else
outb_p (0x01, padapter->regDmaMode); // no interrupt
WalkScatGath (padapter, FALSE, zl);
}
outl (padapter->timingAddress, padapter->regDmaAddrLoc);
outl (padapter->kBufferDma, padapter->regDmaAddrPci);
outl (zl, padapter->regDmaCount);
outb_p (0x03, padapter->regDmaCmdStat); // kick the DMA engine in gear
}
/****************************************************************
* Name: AtapiBusMaster :LOCAL
*
* Description: Do a bus master I/O.
*
* Parameters: padapter - Pointer adapter data structure.
* datain - TRUE if data read.
* length - Number of bytes to transfer.
*
* Returns: Nothing.
*
****************************************************************/
static void AtapiBusMaster (PADAPTER2220I padapter, UCHAR datain, ULONG length)
{
outl (padapter->timingAddress, padapter->regDmaAddrLoc);
outl (padapter->kBufferDma, padapter->regDmaAddrPci);
outl (length, padapter->regDmaCount);
if ( datain )
{
if ( padapter->readCount )
WalkScatGath (padapter, TRUE, padapter->readCount);
outb_p (0x08, padapter->regDmaDesc); // read operation
outb_p (0x08, padapter->regDmaMode); // no interrupt
padapter->readCount = length;
}
else
{
outb_p (0x00, padapter->regDmaDesc); // write operation
outb_p (0x08, padapter->regDmaMode); // no interrupt
if ( !padapter->atapiSpecial )
WalkScatGath (padapter, FALSE, length);
}
outb_p (0x03, padapter->regDmaCmdStat); // kick the DMA engine in gear
}
/****************************************************************
* Name: WriteData :LOCAL
*
* Description: Write data to device.
*
* Parameters: padapter - Pointer adapter data structure.
*
* Returns: TRUE if drive does not assert DRQ in time.
*
****************************************************************/
static int WriteData (PADAPTER2220I padapter)
{
ULONG zl;
if ( !WaitDrq (padapter) )
{
if ( padapter->timingPIO )
{
zl = (padapter->sectorCount > MAX_BUS_MASTER_BLOCKS) ? MAX_BUS_MASTER_BLOCKS : padapter->sectorCount;
WalkScatGath (padapter, FALSE, zl * BYTES_PER_SECTOR);
outsw (padapter->regData, padapter->kBuffer, zl * (BYTES_PER_SECTOR / 2));
padapter->sectorCount -= zl;
}
else
BusMaster (padapter, 0, 0);
return 0;
}
padapter->cmd = 0; // null out the command byte
return 1;
}
/****************************************************************
* Name: WriteDataBoth :LOCAL
*
* Description: Write data to device.
*
* Parameters: padapter - Pointer to adapter structure.
* pdev - Pointer to device structure
*
* Returns: Index + 1 of drive not failed or zero for OK.
*
****************************************************************/
static int WriteDataBoth (PADAPTER2220I padapter, POUR_DEVICE pdev)
{
ULONG zl;
UCHAR status0, status1;
SelectSpigot (padapter, pdev->spigots[0]);
status0 = WaitDrq (padapter);
if ( !status0 )
{
SelectSpigot (padapter, pdev->spigots[1]);
status1 = WaitDrq (padapter);
if ( !status1 )
{
SelectSpigot (padapter, pdev->spigots[0] | pdev->spigots[1] | padapter->bigD);
if ( padapter->timingPIO )
{
zl = (padapter->sectorCount > MAX_BUS_MASTER_BLOCKS) ? MAX_BUS_MASTER_BLOCKS : padapter->sectorCount;
WalkScatGath (padapter, FALSE, zl * BYTES_PER_SECTOR);
outsw (padapter->regData, padapter->kBuffer, zl * (BYTES_PER_SECTOR / 2));
padapter->sectorCount -= zl;
}
else
BusMaster (padapter, 0, 0);
return 0;
}
}
padapter->cmd = 0; // null out the command byte
if ( status0 )
return 2;
return 1;
}
/****************************************************************
* Name: IdeCmd :LOCAL
*
* Description: Process an IDE command.
*
* Parameters: padapter - Pointer adapter data structure.
* pdev - Pointer to device.
*
* Returns: Zero if no error or status register contents on error.
*
****************************************************************/
static UCHAR IdeCmd (PADAPTER2220I padapter, POUR_DEVICE pdev)
{
UCHAR status;
SelectSpigot (padapter, pdev->spigot | padapter->bigD); // select the spigot
outb_p (pdev->byte6 | ((UCHAR *)(&padapter->startSector))[3], padapter->regLba24); // select the drive
status = WaitReady (padapter);
if ( !status )
{
outb_p (padapter->sectorCount, padapter->regSectCount);
outb_p (((UCHAR *)(&padapter->startSector))[0], padapter->regLba0);
outb_p (((UCHAR *)(&padapter->startSector))[1], padapter->regLba8);
outb_p (((UCHAR *)(&padapter->startSector))[2], padapter->regLba16);
padapter->expectingIRQ = TRUE;
WriteCommand (padapter, padapter->cmd);
return 0;
}
padapter->cmd = 0; // null out the command byte
return status;
}
/****************************************************************
* Name: IdeCmdBoth :LOCAL
*
* Description: Process an IDE command to both drivers.
*
* Parameters: padapter - Pointer adapter data structure.
* pdev - Pointer to device structure
*
* Returns: Index + 1 of drive not failed or zero for OK.
*
****************************************************************/
static UCHAR IdeCmdBoth (PADAPTER2220I padapter, POUR_DEVICE pdev)
{
UCHAR status0;
UCHAR status1;
SelectSpigot (padapter, pdev->spigots[0] | pdev->spigots[1]); // select the spigots
outb_p (padapter->pdev->byte6 | ((UCHAR *)(&padapter->startSector))[3], padapter->regLba24);// select the drive
SelectSpigot (padapter, pdev->spigots[0]);
status0 = WaitReady (padapter);
if ( !status0 )
{
SelectSpigot (padapter, pdev->spigots[1]);
status1 = WaitReady (padapter);
if ( !status1 )
{
SelectSpigot (padapter, pdev->spigots[0] | pdev->spigots[1] | padapter->bigD);
outb_p (padapter->sectorCount, padapter->regSectCount);
outb_p (((UCHAR *)(&padapter->startSector))[0], padapter->regLba0);
outb_p (((UCHAR *)(&padapter->startSector))[1], padapter->regLba8);
outb_p (((UCHAR *)(&padapter->startSector))[2], padapter->regLba16);
padapter->expectingIRQ = TRUE;
WriteCommand (padapter, padapter->cmd);
return 0;
}
}
padapter->cmd = 0; // null out the command byte
if ( status0 )
return 2;
return 1;
}
/****************************************************************
* Name: OpDone :LOCAL
*
* Description: Complete an operatoin done sequence.
*
* Parameters: padapter - Pointer to host data block.
* spigot - Spigot select code.
* device - Device byte code.
*
* Returns: Nothing.
*
****************************************************************/
static void OpDone (PADAPTER2220I padapter, ULONG result)
{
Scsi_Cmnd *SCpnt = padapter->SCpnt;
if ( padapter->reconPhase )
{
padapter->reconPhase = 0;
if ( padapter->SCpnt )
{
Pci2220i_QueueCommand (SCpnt, SCpnt->scsi_done);
}
else
{
if ( padapter->reconOn )
{
ReconTimerExpiry ((unsigned long)padapter);
}
}
}
else
{
padapter->cmd = 0;
padapter->SCpnt = NULL;
padapter->pdev = NULL;
SCpnt->result = result;
SCpnt->scsi_done (SCpnt);
if ( padapter->reconOn && !padapter->reconTimer.data )
{
padapter->reconTimer.expires = jiffies + (HZ / 4); // start in 1/4 second
padapter->reconTimer.data = (unsigned long)padapter;
add_timer (&padapter->reconTimer);
}
}
}
/****************************************************************
* Name: InlineIdentify :LOCAL
*
* Description: Do an intline inquiry on a drive.
*
* Parameters: padapter - Pointer to host data block.
* spigot - Spigot select code.
* device - Device byte code.
*
* Returns: Last addressable sector or zero if none.
*
****************************************************************/
static ULONG InlineIdentify (PADAPTER2220I padapter, UCHAR spigot, UCHAR device)
{
PIDENTIFY_DATA pid = (PIDENTIFY_DATA)padapter->kBuffer;
SelectSpigot (padapter, spigot | SEL_IRQ_OFF); // select the spigot
outb_p ((device << 4) | 0xA0, padapter->regLba24); // select the drive
if ( WaitReady (padapter) )
return 0;
WriteCommand (padapter, IDE_COMMAND_IDENTIFY);
if ( WaitDrq (padapter) )
return 0;
insw (padapter->regData, padapter->kBuffer, sizeof (IDENTIFY_DATA) >> 1);
return (pid->LBATotalSectors - 1);
}
/****************************************************************
* Name: AtapiIdentify :LOCAL
*
* Description: Do an intline inquiry on a drive.
*
* Parameters: padapter - Pointer to host data block.
* pdev - Pointer to device table.
*
* Returns: TRUE on error.
*
****************************************************************/
static ULONG AtapiIdentify (PADAPTER2220I padapter, POUR_DEVICE pdev)
{
ATAPI_GENERAL_0 ag0;
USHORT zs;
int z;
AtapiDevice (padapter, pdev->byte6);
WriteCommand (padapter, IDE_COMMAND_ATAPI_IDENTIFY);
if ( AtapiWaitDrq (padapter, 3000) )
return TRUE;
*(USHORT *)&ag0 = inw_p (padapter->regData);
for ( z = 0; z < 255; z++ )
zs = inw_p (padapter->regData);
if ( ag0.ProtocolType == 2 )
{
if ( ag0.CmdDrqType == 1 )
pdev->cmdDrqInt = TRUE;
switch ( ag0.CmdPacketSize )
{
case 0:
pdev->packet = 6;
break;
case 1:
pdev->packet = 8;
break;
default:
pdev->packet = 6;
break;
}
return FALSE;
}
return TRUE;
}
/****************************************************************
* Name: Atapi2Scsi
*
* Description: Convert ATAPI data to SCSI data.
*
* Parameters: padapter - Pointer adapter data structure.
* SCpnt - Pointer to SCSI command structure.
*
* Returns: Nothing.
*
****************************************************************/
void Atapi2Scsi (PADAPTER2220I padapter, Scsi_Cmnd *SCpnt)
{
UCHAR *buff = padapter->currentSgBuffer;
switch ( SCpnt->cmnd[0] )
{
case SCSIOP_MODE_SENSE:
buff[0] = padapter->kBuffer[1];
buff[1] = padapter->kBuffer[2];
buff[2] = padapter->kBuffer[3];
buff[3] = padapter->kBuffer[7];
memcpy (&buff[4], &padapter->kBuffer[8], padapter->atapiCdb[8] - 8);
break;
case SCSIOP_INQUIRY:
padapter->kBuffer[2] = 2;
memcpy (buff, padapter->kBuffer, padapter->currentSgCount);
break;
default:
if ( padapter->readCount )
WalkScatGath (padapter, TRUE, padapter->readCount);
break;
}
}
/****************************************************************
* Name: Scsi2Atapi
*
* Description: Convert SCSI packet command to Atapi packet command.
*
* Parameters: padapter - Pointer adapter data structure.
* SCpnt - Pointer to SCSI command structure.
*
* Returns: Nothing.
*
****************************************************************/
static void Scsi2Atapi (PADAPTER2220I padapter, Scsi_Cmnd *SCpnt)
{
UCHAR *cdb = SCpnt->cmnd;
UCHAR *buff = padapter->currentSgBuffer;
switch (cdb[0])
{
case SCSIOP_READ6:
padapter->atapiCdb[0] = SCSIOP_READ;
padapter->atapiCdb[1] = cdb[1] & 0xE0;
padapter->atapiCdb[3] = cdb[1] & 0x1F;
padapter->atapiCdb[4] = cdb[2];
padapter->atapiCdb[5] = cdb[3];
padapter->atapiCdb[8] = cdb[4];
padapter->atapiCdb[9] = cdb[5];
break;
case SCSIOP_WRITE6:
padapter->atapiCdb[0] = SCSIOP_WRITE;
padapter->atapiCdb[1] = cdb[1] & 0xE0;
padapter->atapiCdb[3] = cdb[1] & 0x1F;
padapter->atapiCdb[4] = cdb[2];
padapter->atapiCdb[5] = cdb[3];
padapter->atapiCdb[8] = cdb[4];
padapter->atapiCdb[9] = cdb[5];
break;
case SCSIOP_MODE_SENSE:
padapter->atapiCdb[0] = SCSIOP_MODE_SENSE10;
padapter->atapiCdb[2] = cdb[2];
padapter->atapiCdb[8] = cdb[4] + 4;
break;
case SCSIOP_MODE_SELECT:
padapter->atapiSpecial = TRUE;
padapter->atapiCdb[0] = SCSIOP_MODE_SELECT10;
padapter->atapiCdb[1] = cdb[1] | 0x10;
memcpy (padapter->kBuffer, buff, 4);
padapter->kBuffer[4] = padapter->kBuffer[5] = 0;
padapter->kBuffer[6] = padapter->kBuffer[7] = 0;
memcpy (&padapter->kBuffer[8], &buff[4], cdb[4] - 4);
padapter->atapiCdb[8] = cdb[4] + 4;
break;
}
}
/****************************************************************
* Name: AtapiSendCdb
*
* Description: Send the CDB packet to the device.
*
* Parameters: padapter - Pointer adapter data structure.
* pdev - Pointer to device.
* cdb - Pointer to 16 byte SCSI cdb.
*
* Returns: Nothing.
*
****************************************************************/
static void AtapiSendCdb (PADAPTER2220I padapter, POUR_DEVICE pdev, CHAR *cdb)
{
DEB (printk ("\nPCI2242I: CDB: %X %X %X %X %X %X %X %X %X %X %X %X", cdb[0], cdb[1], cdb[2], cdb[3], cdb[4], cdb[5], cdb[6], cdb[7], cdb[8], cdb[9], cdb[10], cdb[11]));
outsw (padapter->regData, cdb, pdev->packet);
}
/****************************************************************
* Name: AtapiRequestSense
*
* Description: Send the CDB packet to the device.
*
* Parameters: padapter - Pointer adapter data structure.
* pdev - Pointer to device.
* SCpnt - Pointer to SCSI command structure.
* pass - If true then this is the second pass to send cdb.
*
* Returns: TRUE on error.
*
****************************************************************/
static int AtapiRequestSense (PADAPTER2220I padapter, POUR_DEVICE pdev, Scsi_Cmnd *SCpnt, UCHAR pass)
{
UCHAR cdb[16] = {SCSIOP_REQUEST_SENSE,0,0,0,16,0,0,0,0,0,0,0,0,0,0,0};
DEB (printk ("\nPCI2242I: AUTO REQUEST SENSE"));
cdb[4] = (UCHAR)(sizeof (SCpnt->sense_buffer));
if ( !pass )
{
padapter->reqSense = TRUE;
AtapiCountLo (padapter, cdb[4]);
AtapiCountHi (padapter, 0);
outb_p (0, padapter->regError);
WriteCommand (padapter, IDE_COMMAND_ATAPI_PACKET);
if ( pdev->cmdDrqInt )
return FALSE;
if ( AtapiWaitDrq (padapter, 500) )
return TRUE;
}
AtapiSendCdb (padapter, pdev, cdb);
return FALSE;
}
/****************************************************************
* Name: InlineReadSignature :LOCAL
*
* Description: Do an inline read RAID sigature.
*
* Parameters: padapter - Pointer adapter data structure.
* pdev - Pointer to device.
* index - index of data to read.
*
* Returns: Zero if no error or status register contents on error.
*
****************************************************************/
static UCHAR InlineReadSignature (PADAPTER2220I padapter, POUR_DEVICE pdev, int index)
{
UCHAR status;
ULONG zl = pdev->lastsectorlba[index];
SelectSpigot (padapter, pdev->spigots[index] | SEL_IRQ_OFF); // select the spigot without interrupts
outb_p (pdev->byte6 | ((UCHAR *)&zl)[3], padapter->regLba24);
status = WaitReady (padapter);
if ( !status )
{
outb_p (((UCHAR *)&zl)[2], padapter->regLba16);
outb_p (((UCHAR *)&zl)[1], padapter->regLba8);
outb_p (((UCHAR *)&zl)[0], padapter->regLba0);
outb_p (1, padapter->regSectCount);
WriteCommand (padapter, IDE_COMMAND_READ);
status = WaitDrq (padapter);