/
aha1542.c
1743 lines (1499 loc) · 48.5 KB
/
aha1542.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
/* $Id: aha1542.c,v 1.1 1992/07/24 06:27:38 root Exp root $
* linux/kernel/aha1542.c
*
* Copyright (C) 1992 Tommy Thorn
* Copyright (C) 1993, 1994, 1995 Eric Youngdale
*
* Modified by Eric Youngdale
* Use request_irq and request_dma to help prevent unexpected conflicts
* Set up on-board DMA controller, such that we do not have to
* have the bios enabled to use the aha1542.
* Modified by David Gentzel
* Don't call request_dma if dma mask is 0 (for BusLogic BT-445S VL-Bus
* controller).
* Modified by Matti Aarnio
* Accept parameters from LILO cmd-line. -- 1-Oct-94
* Modified by Mike McLagan <mike.mclagan@linux.org>
* Recognise extended mode on AHA1542CP, different bit than 1542CF
* 1-Jan-97
* Modified by Bjorn L. Thordarson and Einar Thor Einarsson
* Recognize that DMA0 is valid DMA channel -- 13-Jul-98
* Modified by Chris Faulhaber <jedgar@fxp.org>
* Added module command-line options
* 19-Jul-99
* Modified by Adam Fritzler
* Added proper detection of the AHA-1640 (MCA version of AHA-1540)
*/
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/string.h>
#include <linux/ioport.h>
#include <linux/delay.h>
#include <linux/proc_fs.h>
#include <linux/init.h>
#include <linux/spinlock.h>
#include <linux/isapnp.h>
#include <linux/blkdev.h>
#include <linux/mca.h>
#include <linux/mca-legacy.h>
#include <linux/slab.h>
#include <asm/dma.h>
#include <asm/system.h>
#include <asm/io.h>
#include "scsi.h"
#include <scsi/scsi_host.h>
#include "aha1542.h"
#define SCSI_BUF_PA(address) isa_virt_to_bus(address)
#define SCSI_SG_PA(sgent) (isa_page_to_bus(sg_page((sgent))) + (sgent)->offset)
#include<linux/stat.h>
#ifdef DEBUG
#define DEB(x) x
#else
#define DEB(x)
#endif
/*
static const char RCSid[] = "$Header: /usr/src/linux/kernel/blk_drv/scsi/RCS/aha1542.c,v 1.1 1992/07/24 06:27:38 root Exp root $";
*/
/* The adaptec can be configured for quite a number of addresses, but
I generally do not want the card poking around at random. We allow
two addresses - this allows people to use the Adaptec with a Midi
card, which also used 0x330 -- can be overridden with LILO! */
#define MAXBOARDS 4 /* Increase this and the sizes of the
arrays below, if you need more.. */
/* Boards 3,4 slots are reserved for ISAPnP/MCA scans */
static unsigned int bases[MAXBOARDS] __initdata = {0x330, 0x334, 0, 0};
/* set by aha1542_setup according to the command line; they also may
be marked __initdata, but require zero initializers then */
static int setup_called[MAXBOARDS];
static int setup_buson[MAXBOARDS];
static int setup_busoff[MAXBOARDS];
static int setup_dmaspeed[MAXBOARDS] __initdata = { -1, -1, -1, -1 };
/*
* LILO/Module params: aha1542=<PORTBASE>[,<BUSON>,<BUSOFF>[,<DMASPEED>]]
*
* Where: <PORTBASE> is any of the valid AHA addresses:
* 0x130, 0x134, 0x230, 0x234, 0x330, 0x334
* <BUSON> is the time (in microsecs) that AHA spends on the AT-bus
* when transferring data. 1542A power-on default is 11us,
* valid values are in range: 2..15 (decimal)
* <BUSOFF> is the time that AHA spends OFF THE BUS after while
* it is transferring data (not to monopolize the bus).
* Power-on default is 4us, valid range: 1..64 microseconds.
* <DMASPEED> Default is jumper selected (1542A: on the J1),
* but experimenter can alter it with this.
* Valid values: 5, 6, 7, 8, 10 (MB/s)
* Factory default is 5 MB/s.
*/
#if defined(MODULE)
static int isapnp = 0;
static int aha1542[] = {0x330, 11, 4, -1};
module_param_array(aha1542, int, NULL, 0);
module_param(isapnp, bool, 0);
static struct isapnp_device_id id_table[] __initdata = {
{
ISAPNP_ANY_ID, ISAPNP_ANY_ID,
ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1542),
0
},
{0}
};
MODULE_DEVICE_TABLE(isapnp, id_table);
#else
static int isapnp = 1;
#endif
#define BIOS_TRANSLATION_1632 0 /* Used by some old 1542A boards */
#define BIOS_TRANSLATION_6432 1 /* Default case these days */
#define BIOS_TRANSLATION_25563 2 /* Big disk case */
struct aha1542_hostdata {
/* This will effectively start both of them at the first mailbox */
int bios_translation; /* Mapping bios uses - for compatibility */
int aha1542_last_mbi_used;
int aha1542_last_mbo_used;
Scsi_Cmnd *SCint[AHA1542_MAILBOXES];
struct mailbox mb[2 * AHA1542_MAILBOXES];
struct ccb ccb[AHA1542_MAILBOXES];
};
#define HOSTDATA(host) ((struct aha1542_hostdata *) &host->hostdata)
static DEFINE_SPINLOCK(aha1542_lock);
#define WAITnexttimeout 3000000
static void setup_mailboxes(int base_io, struct Scsi_Host *shpnt);
static int aha1542_restart(struct Scsi_Host *shost);
static void aha1542_intr_handle(struct Scsi_Host *shost);
#define aha1542_intr_reset(base) outb(IRST, CONTROL(base))
#define WAIT(port, mask, allof, noneof) \
{ register int WAITbits; \
register int WAITtimeout = WAITnexttimeout; \
while (1) { \
WAITbits = inb(port) & (mask); \
if ((WAITbits & (allof)) == (allof) && ((WAITbits & (noneof)) == 0)) \
break; \
if (--WAITtimeout == 0) goto fail; \
} \
}
/* Similar to WAIT, except we use the udelay call to regulate the
amount of time we wait. */
#define WAITd(port, mask, allof, noneof, timeout) \
{ register int WAITbits; \
register int WAITtimeout = timeout; \
while (1) { \
WAITbits = inb(port) & (mask); \
if ((WAITbits & (allof)) == (allof) && ((WAITbits & (noneof)) == 0)) \
break; \
mdelay(1); \
if (--WAITtimeout == 0) goto fail; \
} \
}
static void aha1542_stat(void)
{
/* int s = inb(STATUS), i = inb(INTRFLAGS);
printk("status=%x intrflags=%x\n", s, i, WAITnexttimeout-WAITtimeout); */
}
/* This is a bit complicated, but we need to make sure that an interrupt
routine does not send something out while we are in the middle of this.
Fortunately, it is only at boot time that multi-byte messages
are ever sent. */
static int aha1542_out(unsigned int base, unchar * cmdp, int len)
{
unsigned long flags = 0;
int got_lock;
if (len == 1) {
got_lock = 0;
while (1 == 1) {
WAIT(STATUS(base), CDF, 0, CDF);
spin_lock_irqsave(&aha1542_lock, flags);
if (inb(STATUS(base)) & CDF) {
spin_unlock_irqrestore(&aha1542_lock, flags);
continue;
}
outb(*cmdp, DATA(base));
spin_unlock_irqrestore(&aha1542_lock, flags);
return 0;
}
} else {
spin_lock_irqsave(&aha1542_lock, flags);
got_lock = 1;
while (len--) {
WAIT(STATUS(base), CDF, 0, CDF);
outb(*cmdp++, DATA(base));
}
spin_unlock_irqrestore(&aha1542_lock, flags);
}
return 0;
fail:
if (got_lock)
spin_unlock_irqrestore(&aha1542_lock, flags);
printk(KERN_ERR "aha1542_out failed(%d): ", len + 1);
aha1542_stat();
return 1;
}
/* Only used at boot time, so we do not need to worry about latency as much
here */
static int __init aha1542_in(unsigned int base, unchar * cmdp, int len)
{
unsigned long flags;
spin_lock_irqsave(&aha1542_lock, flags);
while (len--) {
WAIT(STATUS(base), DF, DF, 0);
*cmdp++ = inb(DATA(base));
}
spin_unlock_irqrestore(&aha1542_lock, flags);
return 0;
fail:
spin_unlock_irqrestore(&aha1542_lock, flags);
printk(KERN_ERR "aha1542_in failed(%d): ", len + 1);
aha1542_stat();
return 1;
}
/* Similar to aha1542_in, except that we wait a very short period of time.
We use this if we know the board is alive and awake, but we are not sure
if the board will respond to the command we are about to send or not */
static int __init aha1542_in1(unsigned int base, unchar * cmdp, int len)
{
unsigned long flags;
spin_lock_irqsave(&aha1542_lock, flags);
while (len--) {
WAITd(STATUS(base), DF, DF, 0, 100);
*cmdp++ = inb(DATA(base));
}
spin_unlock_irqrestore(&aha1542_lock, flags);
return 0;
fail:
spin_unlock_irqrestore(&aha1542_lock, flags);
return 1;
}
static int makecode(unsigned hosterr, unsigned scsierr)
{
switch (hosterr) {
case 0x0:
case 0xa: /* Linked command complete without error and linked normally */
case 0xb: /* Linked command complete without error, interrupt generated */
hosterr = 0;
break;
case 0x11: /* Selection time out-The initiator selection or target
reselection was not complete within the SCSI Time out period */
hosterr = DID_TIME_OUT;
break;
case 0x12: /* Data overrun/underrun-The target attempted to transfer more data
than was allocated by the Data Length field or the sum of the
Scatter / Gather Data Length fields. */
case 0x13: /* Unexpected bus free-The target dropped the SCSI BSY at an unexpected time. */
case 0x15: /* MBO command was not 00, 01 or 02-The first byte of the CB was
invalid. This usually indicates a software failure. */
case 0x16: /* Invalid CCB Operation Code-The first byte of the CCB was invalid.
This usually indicates a software failure. */
case 0x17: /* Linked CCB does not have the same LUN-A subsequent CCB of a set
of linked CCB's does not specify the same logical unit number as
the first. */
case 0x18: /* Invalid Target Direction received from Host-The direction of a
Target Mode CCB was invalid. */
case 0x19: /* Duplicate CCB Received in Target Mode-More than once CCB was
received to service data transfer between the same target LUN
and initiator SCSI ID in the same direction. */
case 0x1a: /* Invalid CCB or Segment List Parameter-A segment list with a zero
length segment or invalid segment list boundaries was received.
A CCB parameter was invalid. */
DEB(printk("Aha1542: %x %x\n", hosterr, scsierr));
hosterr = DID_ERROR; /* Couldn't find any better */
break;
case 0x14: /* Target bus phase sequence failure-An invalid bus phase or bus
phase sequence was requested by the target. The host adapter
will generate a SCSI Reset Condition, notifying the host with
a SCRD interrupt */
hosterr = DID_RESET;
break;
default:
printk(KERN_ERR "aha1542: makecode: unknown hoststatus %x\n", hosterr);
break;
}
return scsierr | (hosterr << 16);
}
static int __init aha1542_test_port(int bse, struct Scsi_Host *shpnt)
{
unchar inquiry_cmd[] = {CMD_INQUIRY};
unchar inquiry_result[4];
unchar *cmdp;
int len;
volatile int debug = 0;
/* Quick and dirty test for presence of the card. */
if (inb(STATUS(bse)) == 0xff)
return 0;
/* Reset the adapter. I ought to make a hard reset, but it's not really necessary */
/* DEB(printk("aha1542_test_port called \n")); */
/* In case some other card was probing here, reset interrupts */
aha1542_intr_reset(bse); /* reset interrupts, so they don't block */
outb(SRST | IRST /*|SCRST */ , CONTROL(bse));
mdelay(20); /* Wait a little bit for things to settle down. */
debug = 1;
/* Expect INIT and IDLE, any of the others are bad */
WAIT(STATUS(bse), STATMASK, INIT | IDLE, STST | DIAGF | INVDCMD | DF | CDF);
debug = 2;
/* Shouldn't have generated any interrupts during reset */
if (inb(INTRFLAGS(bse)) & INTRMASK)
goto fail;
/* Perform a host adapter inquiry instead so we do not need to set
up the mailboxes ahead of time */
aha1542_out(bse, inquiry_cmd, 1);
debug = 3;
len = 4;
cmdp = &inquiry_result[0];
while (len--) {
WAIT(STATUS(bse), DF, DF, 0);
*cmdp++ = inb(DATA(bse));
}
debug = 8;
/* Reading port should reset DF */
if (inb(STATUS(bse)) & DF)
goto fail;
debug = 9;
/* When HACC, command is completed, and we're though testing */
WAIT(INTRFLAGS(bse), HACC, HACC, 0);
/* now initialize adapter */
debug = 10;
/* Clear interrupts */
outb(IRST, CONTROL(bse));
debug = 11;
return debug; /* 1 = ok */
fail:
return 0; /* 0 = not ok */
}
/* A quick wrapper for do_aha1542_intr_handle to grab the spin lock */
static irqreturn_t do_aha1542_intr_handle(int dummy, void *dev_id)
{
unsigned long flags;
struct Scsi_Host *shost = dev_id;
spin_lock_irqsave(shost->host_lock, flags);
aha1542_intr_handle(shost);
spin_unlock_irqrestore(shost->host_lock, flags);
return IRQ_HANDLED;
}
/* A "high" level interrupt handler */
static void aha1542_intr_handle(struct Scsi_Host *shost)
{
void (*my_done) (Scsi_Cmnd *) = NULL;
int errstatus, mbi, mbo, mbistatus;
int number_serviced;
unsigned long flags;
Scsi_Cmnd *SCtmp;
int flag;
int needs_restart;
struct mailbox *mb;
struct ccb *ccb;
mb = HOSTDATA(shost)->mb;
ccb = HOSTDATA(shost)->ccb;
#ifdef DEBUG
{
flag = inb(INTRFLAGS(shost->io_port));
printk(KERN_DEBUG "aha1542_intr_handle: ");
if (!(flag & ANYINTR))
printk("no interrupt?");
if (flag & MBIF)
printk("MBIF ");
if (flag & MBOA)
printk("MBOF ");
if (flag & HACC)
printk("HACC ");
if (flag & SCRD)
printk("SCRD ");
printk("status %02x\n", inb(STATUS(shost->io_port)));
};
#endif
number_serviced = 0;
needs_restart = 0;
while (1 == 1) {
flag = inb(INTRFLAGS(shost->io_port));
/* Check for unusual interrupts. If any of these happen, we should
probably do something special, but for now just printing a message
is sufficient. A SCSI reset detected is something that we really
need to deal with in some way. */
if (flag & ~MBIF) {
if (flag & MBOA)
printk("MBOF ");
if (flag & HACC)
printk("HACC ");
if (flag & SCRD) {
needs_restart = 1;
printk("SCRD ");
}
}
aha1542_intr_reset(shost->io_port);
spin_lock_irqsave(&aha1542_lock, flags);
mbi = HOSTDATA(shost)->aha1542_last_mbi_used + 1;
if (mbi >= 2 * AHA1542_MAILBOXES)
mbi = AHA1542_MAILBOXES;
do {
if (mb[mbi].status != 0)
break;
mbi++;
if (mbi >= 2 * AHA1542_MAILBOXES)
mbi = AHA1542_MAILBOXES;
} while (mbi != HOSTDATA(shost)->aha1542_last_mbi_used);
if (mb[mbi].status == 0) {
spin_unlock_irqrestore(&aha1542_lock, flags);
/* Hmm, no mail. Must have read it the last time around */
if (!number_serviced && !needs_restart)
printk(KERN_WARNING "aha1542.c: interrupt received, but no mail.\n");
/* We detected a reset. Restart all pending commands for
devices that use the hard reset option */
if (needs_restart)
aha1542_restart(shost);
return;
};
mbo = (scsi2int(mb[mbi].ccbptr) - (SCSI_BUF_PA(&ccb[0]))) / sizeof(struct ccb);
mbistatus = mb[mbi].status;
mb[mbi].status = 0;
HOSTDATA(shost)->aha1542_last_mbi_used = mbi;
spin_unlock_irqrestore(&aha1542_lock, flags);
#ifdef DEBUG
{
if (ccb[mbo].tarstat | ccb[mbo].hastat)
printk(KERN_DEBUG "aha1542_command: returning %x (status %d)\n",
ccb[mbo].tarstat + ((int) ccb[mbo].hastat << 16), mb[mbi].status);
};
#endif
if (mbistatus == 3)
continue; /* Aborted command not found */
#ifdef DEBUG
printk(KERN_DEBUG "...done %d %d\n", mbo, mbi);
#endif
SCtmp = HOSTDATA(shost)->SCint[mbo];
if (!SCtmp || !SCtmp->scsi_done) {
printk(KERN_WARNING "aha1542_intr_handle: Unexpected interrupt\n");
printk(KERN_WARNING "tarstat=%x, hastat=%x idlun=%x ccb#=%d \n", ccb[mbo].tarstat,
ccb[mbo].hastat, ccb[mbo].idlun, mbo);
return;
}
my_done = SCtmp->scsi_done;
kfree(SCtmp->host_scribble);
SCtmp->host_scribble = NULL;
/* Fetch the sense data, and tuck it away, in the required slot. The
Adaptec automatically fetches it, and there is no guarantee that
we will still have it in the cdb when we come back */
if (ccb[mbo].tarstat == 2)
memcpy(SCtmp->sense_buffer, &ccb[mbo].cdb[ccb[mbo].cdblen],
SCSI_SENSE_BUFFERSIZE);
/* is there mail :-) */
/* more error checking left out here */
if (mbistatus != 1)
/* This is surely wrong, but I don't know what's right */
errstatus = makecode(ccb[mbo].hastat, ccb[mbo].tarstat);
else
errstatus = 0;
#ifdef DEBUG
if (errstatus)
printk(KERN_DEBUG "(aha1542 error:%x %x %x) ", errstatus,
ccb[mbo].hastat, ccb[mbo].tarstat);
#endif
if (ccb[mbo].tarstat == 2) {
#ifdef DEBUG
int i;
#endif
DEB(printk("aha1542_intr_handle: sense:"));
#ifdef DEBUG
for (i = 0; i < 12; i++)
printk("%02x ", ccb[mbo].cdb[ccb[mbo].cdblen + i]);
printk("\n");
#endif
/*
DEB(printk("aha1542_intr_handle: buf:"));
for (i = 0; i < bufflen; i++)
printk("%02x ", ((unchar *)buff)[i]);
printk("\n");
*/
}
DEB(if (errstatus) printk("aha1542_intr_handle: returning %6x\n", errstatus));
SCtmp->result = errstatus;
HOSTDATA(shost)->SCint[mbo] = NULL; /* This effectively frees up the mailbox slot, as
far as queuecommand is concerned */
my_done(SCtmp);
number_serviced++;
};
}
static int aha1542_queuecommand(Scsi_Cmnd * SCpnt, void (*done) (Scsi_Cmnd *))
{
unchar ahacmd = CMD_START_SCSI;
unchar direction;
unchar *cmd = (unchar *) SCpnt->cmnd;
unchar target = SCpnt->device->id;
unchar lun = SCpnt->device->lun;
unsigned long flags;
int bufflen = scsi_bufflen(SCpnt);
int mbo;
struct mailbox *mb;
struct ccb *ccb;
DEB(int i);
mb = HOSTDATA(SCpnt->device->host)->mb;
ccb = HOSTDATA(SCpnt->device->host)->ccb;
DEB(if (target > 1) {
SCpnt->result = DID_TIME_OUT << 16;
done(SCpnt); return 0;
}
);
if (*cmd == REQUEST_SENSE) {
/* Don't do the command - we have the sense data already */
#if 0
/* scsi_request_sense() provides a buffer of size 256,
so there is no reason to expect equality */
if (bufflen != SCSI_SENSE_BUFFERSIZE)
printk(KERN_CRIT "aha1542: Wrong buffer length supplied "
"for request sense (%d)\n", bufflen);
#endif
SCpnt->result = 0;
done(SCpnt);
return 0;
}
#ifdef DEBUG
if (*cmd == READ_10 || *cmd == WRITE_10)
i = xscsi2int(cmd + 2);
else if (*cmd == READ_6 || *cmd == WRITE_6)
i = scsi2int(cmd + 2);
else
i = -1;
if (done)
printk(KERN_DEBUG "aha1542_queuecommand: dev %d cmd %02x pos %d len %d ", target, *cmd, i, bufflen);
else
printk(KERN_DEBUG "aha1542_command: dev %d cmd %02x pos %d len %d ", target, *cmd, i, bufflen);
aha1542_stat();
printk(KERN_DEBUG "aha1542_queuecommand: dumping scsi cmd:");
for (i = 0; i < SCpnt->cmd_len; i++)
printk("%02x ", cmd[i]);
printk("\n");
if (*cmd == WRITE_10 || *cmd == WRITE_6)
return 0; /* we are still testing, so *don't* write */
#endif
/* Use the outgoing mailboxes in a round-robin fashion, because this
is how the host adapter will scan for them */
spin_lock_irqsave(&aha1542_lock, flags);
mbo = HOSTDATA(SCpnt->device->host)->aha1542_last_mbo_used + 1;
if (mbo >= AHA1542_MAILBOXES)
mbo = 0;
do {
if (mb[mbo].status == 0 && HOSTDATA(SCpnt->device->host)->SCint[mbo] == NULL)
break;
mbo++;
if (mbo >= AHA1542_MAILBOXES)
mbo = 0;
} while (mbo != HOSTDATA(SCpnt->device->host)->aha1542_last_mbo_used);
if (mb[mbo].status || HOSTDATA(SCpnt->device->host)->SCint[mbo])
panic("Unable to find empty mailbox for aha1542.\n");
HOSTDATA(SCpnt->device->host)->SCint[mbo] = SCpnt; /* This will effectively prevent someone else from
screwing with this cdb. */
HOSTDATA(SCpnt->device->host)->aha1542_last_mbo_used = mbo;
spin_unlock_irqrestore(&aha1542_lock, flags);
#ifdef DEBUG
printk(KERN_DEBUG "Sending command (%d %x)...", mbo, done);
#endif
any2scsi(mb[mbo].ccbptr, SCSI_BUF_PA(&ccb[mbo])); /* This gets trashed for some reason */
memset(&ccb[mbo], 0, sizeof(struct ccb));
ccb[mbo].cdblen = SCpnt->cmd_len;
direction = 0;
if (*cmd == READ_10 || *cmd == READ_6)
direction = 8;
else if (*cmd == WRITE_10 || *cmd == WRITE_6)
direction = 16;
memcpy(ccb[mbo].cdb, cmd, ccb[mbo].cdblen);
if (bufflen) {
struct scatterlist *sg;
struct chain *cptr;
#ifdef DEBUG
unsigned char *ptr;
#endif
int i, sg_count = scsi_sg_count(SCpnt);
ccb[mbo].op = 2; /* SCSI Initiator Command w/scatter-gather */
SCpnt->host_scribble = kmalloc(sizeof(*cptr)*sg_count,
GFP_KERNEL | GFP_DMA);
cptr = (struct chain *) SCpnt->host_scribble;
if (cptr == NULL) {
/* free the claimed mailbox slot */
HOSTDATA(SCpnt->device->host)->SCint[mbo] = NULL;
return SCSI_MLQUEUE_HOST_BUSY;
}
scsi_for_each_sg(SCpnt, sg, sg_count, i) {
any2scsi(cptr[i].dataptr, SCSI_SG_PA(sg));
any2scsi(cptr[i].datalen, sg->length);
};
any2scsi(ccb[mbo].datalen, sg_count * sizeof(struct chain));
any2scsi(ccb[mbo].dataptr, SCSI_BUF_PA(cptr));
#ifdef DEBUG
printk("cptr %x: ", cptr);
ptr = (unsigned char *) cptr;
for (i = 0; i < 18; i++)
printk("%02x ", ptr[i]);
#endif
} else {
ccb[mbo].op = 0; /* SCSI Initiator Command */
SCpnt->host_scribble = NULL;
any2scsi(ccb[mbo].datalen, 0);
any2scsi(ccb[mbo].dataptr, 0);
};
ccb[mbo].idlun = (target & 7) << 5 | direction | (lun & 7); /*SCSI Target Id */
ccb[mbo].rsalen = 16;
ccb[mbo].linkptr[0] = ccb[mbo].linkptr[1] = ccb[mbo].linkptr[2] = 0;
ccb[mbo].commlinkid = 0;
#ifdef DEBUG
{
int i;
printk(KERN_DEBUG "aha1542_command: sending.. ");
for (i = 0; i < sizeof(ccb[mbo]) - 10; i++)
printk("%02x ", ((unchar *) & ccb[mbo])[i]);
};
#endif
if (done) {
DEB(printk("aha1542_queuecommand: now waiting for interrupt ");
aha1542_stat());
SCpnt->scsi_done = done;
mb[mbo].status = 1;
aha1542_out(SCpnt->device->host->io_port, &ahacmd, 1); /* start scsi command */
DEB(aha1542_stat());
} else
printk("aha1542_queuecommand: done can't be NULL\n");
return 0;
}
/* Initialize mailboxes */
static void setup_mailboxes(int bse, struct Scsi_Host *shpnt)
{
int i;
struct mailbox *mb;
struct ccb *ccb;
unchar cmd[5] = { CMD_MBINIT, AHA1542_MAILBOXES, 0, 0, 0};
mb = HOSTDATA(shpnt)->mb;
ccb = HOSTDATA(shpnt)->ccb;
for (i = 0; i < AHA1542_MAILBOXES; i++) {
mb[i].status = mb[AHA1542_MAILBOXES + i].status = 0;
any2scsi(mb[i].ccbptr, SCSI_BUF_PA(&ccb[i]));
};
aha1542_intr_reset(bse); /* reset interrupts, so they don't block */
any2scsi((cmd + 2), SCSI_BUF_PA(mb));
aha1542_out(bse, cmd, 5);
WAIT(INTRFLAGS(bse), INTRMASK, HACC, 0);
while (0) {
fail:
printk(KERN_ERR "aha1542_detect: failed setting up mailboxes\n");
}
aha1542_intr_reset(bse);
}
static int __init aha1542_getconfig(int base_io, unsigned char *irq_level, unsigned char *dma_chan, unsigned char *scsi_id)
{
unchar inquiry_cmd[] = {CMD_RETCONF};
unchar inquiry_result[3];
int i;
i = inb(STATUS(base_io));
if (i & DF) {
i = inb(DATA(base_io));
};
aha1542_out(base_io, inquiry_cmd, 1);
aha1542_in(base_io, inquiry_result, 3);
WAIT(INTRFLAGS(base_io), INTRMASK, HACC, 0);
while (0) {
fail:
printk(KERN_ERR "aha1542_detect: query board settings\n");
}
aha1542_intr_reset(base_io);
switch (inquiry_result[0]) {
case 0x80:
*dma_chan = 7;
break;
case 0x40:
*dma_chan = 6;
break;
case 0x20:
*dma_chan = 5;
break;
case 0x01:
*dma_chan = 0;
break;
case 0:
/* This means that the adapter, although Adaptec 1542 compatible, doesn't use a DMA channel.
Currently only aware of the BusLogic BT-445S VL-Bus adapter which needs this. */
*dma_chan = 0xFF;
break;
default:
printk(KERN_ERR "Unable to determine Adaptec DMA priority. Disabling board\n");
return -1;
};
switch (inquiry_result[1]) {
case 0x40:
*irq_level = 15;
break;
case 0x20:
*irq_level = 14;
break;
case 0x8:
*irq_level = 12;
break;
case 0x4:
*irq_level = 11;
break;
case 0x2:
*irq_level = 10;
break;
case 0x1:
*irq_level = 9;
break;
default:
printk(KERN_ERR "Unable to determine Adaptec IRQ level. Disabling board\n");
return -1;
};
*scsi_id = inquiry_result[2] & 7;
return 0;
}
/* This function should only be called for 1542C boards - we can detect
the special firmware settings and unlock the board */
static int __init aha1542_mbenable(int base)
{
static unchar mbenable_cmd[3];
static unchar mbenable_result[2];
int retval;
retval = BIOS_TRANSLATION_6432;
mbenable_cmd[0] = CMD_EXTBIOS;
aha1542_out(base, mbenable_cmd, 1);
if (aha1542_in1(base, mbenable_result, 2))
return retval;
WAITd(INTRFLAGS(base), INTRMASK, HACC, 0, 100);
aha1542_intr_reset(base);
if ((mbenable_result[0] & 0x08) || mbenable_result[1]) {
mbenable_cmd[0] = CMD_MBENABLE;
mbenable_cmd[1] = 0;
mbenable_cmd[2] = mbenable_result[1];
if ((mbenable_result[0] & 0x08) && (mbenable_result[1] & 0x03))
retval = BIOS_TRANSLATION_25563;
aha1542_out(base, mbenable_cmd, 3);
WAIT(INTRFLAGS(base), INTRMASK, HACC, 0);
};
while (0) {
fail:
printk(KERN_ERR "aha1542_mbenable: Mailbox init failed\n");
}
aha1542_intr_reset(base);
return retval;
}
/* Query the board to find out if it is a 1542 or a 1740, or whatever. */
static int __init aha1542_query(int base_io, int *transl)
{
unchar inquiry_cmd[] = {CMD_INQUIRY};
unchar inquiry_result[4];
int i;
i = inb(STATUS(base_io));
if (i & DF) {
i = inb(DATA(base_io));
};
aha1542_out(base_io, inquiry_cmd, 1);
aha1542_in(base_io, inquiry_result, 4);
WAIT(INTRFLAGS(base_io), INTRMASK, HACC, 0);
while (0) {
fail:
printk(KERN_ERR "aha1542_detect: query card type\n");
}
aha1542_intr_reset(base_io);
*transl = BIOS_TRANSLATION_6432; /* Default case */
/* For an AHA1740 series board, we ignore the board since there is a
hardware bug which can lead to wrong blocks being returned if the board
is operating in the 1542 emulation mode. Since there is an extended mode
driver, we simply ignore the board and let the 1740 driver pick it up.
*/
if (inquiry_result[0] == 0x43) {
printk(KERN_INFO "aha1542.c: Emulation mode not supported for AHA 174N hardware.\n");
return 1;
};
/* Always call this - boards that do not support extended bios translation
will ignore the command, and we will set the proper default */
*transl = aha1542_mbenable(base_io);
return 0;
}
#ifndef MODULE
static char *setup_str[MAXBOARDS] __initdata;
static int setup_idx = 0;
static void __init aha1542_setup(char *str, int *ints)
{
const char *ahausage = "aha1542: usage: aha1542=<PORTBASE>[,<BUSON>,<BUSOFF>[,<DMASPEED>]]\n";
int setup_portbase;
if (setup_idx >= MAXBOARDS) {
printk(KERN_ERR "aha1542: aha1542_setup called too many times! Bad LILO params ?\n");
printk(KERN_ERR " Entryline 1: %s\n", setup_str[0]);
printk(KERN_ERR " Entryline 2: %s\n", setup_str[1]);
printk(KERN_ERR " This line: %s\n", str);
return;
}
if (ints[0] < 1 || ints[0] > 4) {
printk(KERN_ERR "aha1542: %s\n", str);
printk(ahausage);
printk(KERN_ERR "aha1542: Wrong parameters may cause system malfunction.. We try anyway..\n");
}
setup_called[setup_idx] = ints[0];
setup_str[setup_idx] = str;
setup_portbase = ints[0] >= 1 ? ints[1] : 0; /* Preserve the default value.. */
setup_buson[setup_idx] = ints[0] >= 2 ? ints[2] : 7;
setup_busoff[setup_idx] = ints[0] >= 3 ? ints[3] : 5;
if (ints[0] >= 4)
{
int atbt = -1;
switch (ints[4]) {
case 5:
atbt = 0x00;
break;
case 6:
atbt = 0x04;
break;
case 7:
atbt = 0x01;
break;
case 8:
atbt = 0x02;
break;
case 10:
atbt = 0x03;
break;
default:
printk(KERN_ERR "aha1542: %s\n", str);
printk(ahausage);
printk(KERN_ERR "aha1542: Valid values for DMASPEED are 5-8, 10 MB/s. Using jumper defaults.\n");
break;
}
setup_dmaspeed[setup_idx] = atbt;
}
if (setup_portbase != 0)
bases[setup_idx] = setup_portbase;
++setup_idx;
}
static int __init do_setup(char *str)
{
int ints[5];
int count=setup_idx;
get_options(str, ARRAY_SIZE(ints), ints);
aha1542_setup(str,ints);
return count<setup_idx;
}
__setup("aha1542=",do_setup);
#endif
/* return non-zero on detection */
static int __init aha1542_detect(struct scsi_host_template * tpnt)
{
unsigned char dma_chan;
unsigned char irq_level;
unsigned char scsi_id;
unsigned long flags;
unsigned int base_io;
int trans;
struct Scsi_Host *shpnt = NULL;
int count = 0;
int indx;
DEB(printk("aha1542_detect: \n"));
tpnt->proc_name = "aha1542";
#ifdef MODULE
bases[0] = aha1542[0];
setup_buson[0] = aha1542[1];
setup_busoff[0] = aha1542[2];
{
int atbt = -1;
switch (aha1542[3]) {
case 5:
atbt = 0x00;
break;
case 6:
atbt = 0x04;
break;
case 7:
atbt = 0x01;
break;
case 8:
atbt = 0x02;