-
Notifications
You must be signed in to change notification settings - Fork 53.3k
/
initio.c
3175 lines (2703 loc) · 93.7 KB
/
initio.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
/**************************************************************************
* Initio 9100 device driver for Linux.
*
* Copyright (c) 1994-1998 Initio Corporation
* Copyright (c) 1998 Bas Vermeulen <bvermeul@blackstar.xs4all.nl>
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*
* --------------------------------------------------------------------------
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions, and the following disclaimer,
* without modification, immediately at the beginning of the file.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* Where this Software is combined with software released under the terms of
* the GNU General Public License ("GPL") and the terms of the GPL would require the
* combined work to also be released under the terms of the GPL, the terms
* and conditions of this License will apply in addition to those of the
* GPL with the exception of any terms or conditions of this License that
* conflict with, or are expressly prohibited by, the GPL.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*************************************************************************
*
* DESCRIPTION:
*
* This is the Linux low-level SCSI driver for Initio INI-9X00U/UW SCSI host
* adapters
*
* 08/06/97 hc - v1.01h
* - Support inic-940 and inic-935
* 09/26/97 hc - v1.01i
* - Make correction from J.W. Schultz suggestion
* 10/13/97 hc - Support reset function
* 10/21/97 hc - v1.01j
* - Support 32 LUN (SCSI 3)
* 01/14/98 hc - v1.01k
* - Fix memory allocation problem
* 03/04/98 hc - v1.01l
* - Fix tape rewind which will hang the system problem
* - Set can_queue to tul_num_scb
* 06/25/98 hc - v1.01m
* - Get it work for kernel version >= 2.1.75
* - Dynamic assign SCSI bus reset holding time in init_tulip()
* 07/02/98 hc - v1.01n
* - Support 0002134A
* 08/07/98 hc - v1.01o
* - Change the tul_abort_srb routine to use scsi_done. <01>
* 09/07/98 hl - v1.02
* - Change the INI9100U define and proc_dir_entry to
* reflect the newer Kernel 2.1.118, but the v1.o1o
* should work with Kernel 2.1.118.
* 09/20/98 wh - v1.02a
* - Support Abort command.
* - Handle reset routine.
* 09/21/98 hl - v1.03
* - remove comments.
* 12/09/98 bv - v1.03a
* - Removed unused code
* 12/13/98 bv - v1.03b
* - Remove cli() locking for kernels >= 2.1.95. This uses
* spinlocks to serialize access to the pSRB_head and
* pSRB_tail members of the HCS structure.
* 09/01/99 bv - v1.03d
* - Fixed a deadlock problem in SMP.
* 21/01/99 bv - v1.03e
* - Add support for the Domex 3192U PCI SCSI
* This is a slightly modified patch by
* Brian Macy <bmacy@sunshinecomputing.com>
* 22/02/99 bv - v1.03f
* - Didn't detect the INIC-950 in 2.0.x correctly.
* Now fixed.
* 05/07/99 bv - v1.03g
* - Changed the assumption that HZ = 100
* 10/17/03 mc - v1.04
* - added new DMA API support
* 06/01/04 jmd - v1.04a
* - Re-add reset_bus support
**************************************************************************/
#include <linux/module.h>
#include <linux/errno.h>
#include <linux/delay.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/blkdev.h>
#include <linux/spinlock.h>
#include <linux/stat.h>
#include <linux/kernel.h>
#include <linux/proc_fs.h>
#include <linux/string.h>
#include <linux/interrupt.h>
#include <linux/ioport.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/jiffies.h>
#include <linux/dma-mapping.h>
#include <asm/io.h>
#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_tcq.h>
#include "initio.h"
#define SENSE_SIZE 14
#define i91u_MAXQUEUE 2
#define i91u_REVID "Initio INI-9X00U/UW SCSI device driver; Revision: 1.04a"
#define I950_DEVICE_ID 0x9500 /* Initio's inic-950 product ID */
#define I940_DEVICE_ID 0x9400 /* Initio's inic-940 product ID */
#define I935_DEVICE_ID 0x9401 /* Initio's inic-935 product ID */
#define I920_DEVICE_ID 0x0002 /* Initio's other product ID */
#ifdef DEBUG_i91u
static unsigned int i91u_debug = DEBUG_DEFAULT;
#endif
#define TUL_RDWORD(x,y) (short)(inl((int)((ULONG)((ULONG)x+(UCHAR)y)) ))
typedef struct PCI_ID_Struc {
unsigned short vendor_id;
unsigned short device_id;
} PCI_ID;
static int tul_num_ch = 4; /* Maximum 4 adapters */
static int tul_num_scb;
static int tul_tag_enable = 1;
static SCB *tul_scb;
#ifdef DEBUG_i91u
static int setup_debug = 0;
#endif
static void i91uSCBPost(BYTE * pHcb, BYTE * pScb);
/* PCI Devices supported by this driver */
static struct pci_device_id i91u_pci_devices[] = {
{ PCI_VENDOR_ID_INIT, I950_DEVICE_ID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
{ PCI_VENDOR_ID_INIT, I940_DEVICE_ID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
{ PCI_VENDOR_ID_INIT, I935_DEVICE_ID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
{ PCI_VENDOR_ID_INIT, I920_DEVICE_ID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
{ PCI_VENDOR_ID_DOMEX, I920_DEVICE_ID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
{ }
};
MODULE_DEVICE_TABLE(pci, i91u_pci_devices);
#define DEBUG_INTERRUPT 0
#define DEBUG_QUEUE 0
#define DEBUG_STATE 0
#define INT_DISC 0
/*--- external functions --*/
static void tul_se2_wait(void);
/*--- forward refrence ---*/
static SCB *tul_find_busy_scb(HCS * pCurHcb, WORD tarlun);
static SCB *tul_find_done_scb(HCS * pCurHcb);
static int tulip_main(HCS * pCurHcb);
static int tul_next_state(HCS * pCurHcb);
static int tul_state_1(HCS * pCurHcb);
static int tul_state_2(HCS * pCurHcb);
static int tul_state_3(HCS * pCurHcb);
static int tul_state_4(HCS * pCurHcb);
static int tul_state_5(HCS * pCurHcb);
static int tul_state_6(HCS * pCurHcb);
static int tul_state_7(HCS * pCurHcb);
static int tul_xfer_data_in(HCS * pCurHcb);
static int tul_xfer_data_out(HCS * pCurHcb);
static int tul_xpad_in(HCS * pCurHcb);
static int tul_xpad_out(HCS * pCurHcb);
static int tul_status_msg(HCS * pCurHcb);
static int tul_msgin(HCS * pCurHcb);
static int tul_msgin_sync(HCS * pCurHcb);
static int tul_msgin_accept(HCS * pCurHcb);
static int tul_msgout_reject(HCS * pCurHcb);
static int tul_msgin_extend(HCS * pCurHcb);
static int tul_msgout_ide(HCS * pCurHcb);
static int tul_msgout_abort_targ(HCS * pCurHcb);
static int tul_msgout_abort_tag(HCS * pCurHcb);
static int tul_bus_device_reset(HCS * pCurHcb);
static void tul_select_atn(HCS * pCurHcb, SCB * pCurScb);
static void tul_select_atn3(HCS * pCurHcb, SCB * pCurScb);
static void tul_select_atn_stop(HCS * pCurHcb, SCB * pCurScb);
static int int_tul_busfree(HCS * pCurHcb);
static int int_tul_scsi_rst(HCS * pCurHcb);
static int int_tul_bad_seq(HCS * pCurHcb);
static int int_tul_resel(HCS * pCurHcb);
static int tul_sync_done(HCS * pCurHcb);
static int wdtr_done(HCS * pCurHcb);
static int wait_tulip(HCS * pCurHcb);
static int tul_wait_done_disc(HCS * pCurHcb);
static int tul_wait_disc(HCS * pCurHcb);
static void tulip_scsi(HCS * pCurHcb);
static int tul_post_scsi_rst(HCS * pCurHcb);
static void tul_se2_ew_en(WORD CurBase);
static void tul_se2_ew_ds(WORD CurBase);
static int tul_se2_rd_all(WORD CurBase);
static void tul_se2_update_all(WORD CurBase); /* setup default pattern */
static void tul_read_eeprom(WORD CurBase);
/* ---- INTERNAL VARIABLES ---- */
static HCS tul_hcs[MAX_SUPPORTED_ADAPTERS];
static INI_ADPT_STRUCT i91u_adpt[MAX_SUPPORTED_ADAPTERS];
/*NVRAM nvram, *nvramp = &nvram; */
static NVRAM i91unvram;
static NVRAM *i91unvramp;
static UCHAR i91udftNvRam[64] =
{
/*----------- header -----------*/
0x25, 0xc9, /* Signature */
0x40, /* Size */
0x01, /* Revision */
/* -- Host Adapter Structure -- */
0x95, /* ModelByte0 */
0x00, /* ModelByte1 */
0x00, /* ModelInfo */
0x01, /* NumOfCh */
NBC1_DEFAULT, /* BIOSConfig1 */
0, /* BIOSConfig2 */
0, /* HAConfig1 */
0, /* HAConfig2 */
/* SCSI channel 0 and target Structure */
7, /* SCSIid */
NCC1_DEFAULT, /* SCSIconfig1 */
0, /* SCSIconfig2 */
0x10, /* NumSCSItarget */
NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT,
NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT,
NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT,
NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT,
/* SCSI channel 1 and target Structure */
7, /* SCSIid */
NCC1_DEFAULT, /* SCSIconfig1 */
0, /* SCSIconfig2 */
0x10, /* NumSCSItarget */
NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT,
NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT,
NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT,
NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0}; /* - CheckSum - */
static UCHAR tul_rate_tbl[8] = /* fast 20 */
{
/* nanosecond devide by 4 */
12, /* 50ns, 20M */
18, /* 75ns, 13.3M */
25, /* 100ns, 10M */
31, /* 125ns, 8M */
37, /* 150ns, 6.6M */
43, /* 175ns, 5.7M */
50, /* 200ns, 5M */
62 /* 250ns, 4M */
};
static void tul_do_pause(unsigned amount)
{ /* Pause for amount jiffies */
unsigned long the_time = jiffies + amount;
while (time_before_eq(jiffies, the_time));
}
/*-- forward reference --*/
/*******************************************************************
Use memeory refresh time ~ 15us * 2
********************************************************************/
void tul_se2_wait(void)
{
#if 1
udelay(30);
#else
UCHAR readByte;
readByte = TUL_RD(0, 0x61);
if ((readByte & 0x10) == 0x10) {
for (;;) {
readByte = TUL_RD(0, 0x61);
if ((readByte & 0x10) == 0x10)
break;
}
for (;;) {
readByte = TUL_RD(0, 0x61);
if ((readByte & 0x10) != 0x10)
break;
}
} else {
for (;;) {
readByte = TUL_RD(0, 0x61);
if ((readByte & 0x10) == 0x10)
break;
}
for (;;) {
readByte = TUL_RD(0, 0x61);
if ((readByte & 0x10) != 0x10)
break;
}
}
#endif
}
/******************************************************************
Input: instruction for Serial E2PROM
EX: se2_rd(0 call se2_instr() to send address and read command
StartBit OP_Code Address Data
--------- -------- ------------------ -------
1 1 , 0 A5,A4,A3,A2,A1,A0 D15-D0
+-----------------------------------------------------
|
CS -----+
+--+ +--+ +--+ +--+ +--+
^ | ^ | ^ | ^ | ^ |
| | | | | | | | | |
CLK -------+ +--+ +--+ +--+ +--+ +--
(leading edge trigger)
+--1-----1--+
| SB OP | OP A5 A4
DI ----+ +--0------------------
(address and cmd sent to nvram)
-------------------------------------------+
|
DO +---
(data sent from nvram)
******************************************************************/
static void tul_se2_instr(WORD CurBase, UCHAR instr)
{
int i;
UCHAR b;
TUL_WR(CurBase + TUL_NVRAM, SE2CS | SE2DO); /* cs+start bit */
tul_se2_wait();
TUL_WR(CurBase + TUL_NVRAM, SE2CS | SE2CLK | SE2DO); /* +CLK */
tul_se2_wait();
for (i = 0; i < 8; i++) {
if (instr & 0x80)
b = SE2CS | SE2DO; /* -CLK+dataBit */
else
b = SE2CS; /* -CLK */
TUL_WR(CurBase + TUL_NVRAM, b);
tul_se2_wait();
TUL_WR(CurBase + TUL_NVRAM, b | SE2CLK); /* +CLK */
tul_se2_wait();
instr <<= 1;
}
TUL_WR(CurBase + TUL_NVRAM, SE2CS); /* -CLK */
tul_se2_wait();
return;
}
/******************************************************************
Function name : tul_se2_ew_en
Description : Enable erase/write state of serial EEPROM
******************************************************************/
void tul_se2_ew_en(WORD CurBase)
{
tul_se2_instr(CurBase, 0x30); /* EWEN */
TUL_WR(CurBase + TUL_NVRAM, 0); /* -CS */
tul_se2_wait();
return;
}
/************************************************************************
Disable erase/write state of serial EEPROM
*************************************************************************/
void tul_se2_ew_ds(WORD CurBase)
{
tul_se2_instr(CurBase, 0); /* EWDS */
TUL_WR(CurBase + TUL_NVRAM, 0); /* -CS */
tul_se2_wait();
return;
}
/******************************************************************
Input :address of Serial E2PROM
Output :value stored in Serial E2PROM
*******************************************************************/
static USHORT tul_se2_rd(WORD CurBase, ULONG adr)
{
UCHAR instr, readByte;
USHORT readWord;
int i;
instr = (UCHAR) (adr | 0x80);
tul_se2_instr(CurBase, instr); /* READ INSTR */
readWord = 0;
for (i = 15; i >= 0; i--) {
TUL_WR(CurBase + TUL_NVRAM, SE2CS | SE2CLK); /* +CLK */
tul_se2_wait();
TUL_WR(CurBase + TUL_NVRAM, SE2CS); /* -CLK */
/* sample data after the following edge of clock */
readByte = TUL_RD(CurBase, TUL_NVRAM);
readByte &= SE2DI;
readWord += (readByte << i);
tul_se2_wait(); /* 6/20/95 */
}
TUL_WR(CurBase + TUL_NVRAM, 0); /* no chip select */
tul_se2_wait();
return readWord;
}
/******************************************************************
Input: new value in Serial E2PROM, address of Serial E2PROM
*******************************************************************/
static void tul_se2_wr(WORD CurBase, UCHAR adr, USHORT writeWord)
{
UCHAR readByte;
UCHAR instr;
int i;
instr = (UCHAR) (adr | 0x40);
tul_se2_instr(CurBase, instr); /* WRITE INSTR */
for (i = 15; i >= 0; i--) {
if (writeWord & 0x8000)
TUL_WR(CurBase + TUL_NVRAM, SE2CS | SE2DO); /* -CLK+dataBit 1 */
else
TUL_WR(CurBase + TUL_NVRAM, SE2CS); /* -CLK+dataBit 0 */
tul_se2_wait();
TUL_WR(CurBase + TUL_NVRAM, SE2CS | SE2CLK); /* +CLK */
tul_se2_wait();
writeWord <<= 1;
}
TUL_WR(CurBase + TUL_NVRAM, SE2CS); /* -CLK */
tul_se2_wait();
TUL_WR(CurBase + TUL_NVRAM, 0); /* -CS */
tul_se2_wait();
TUL_WR(CurBase + TUL_NVRAM, SE2CS); /* +CS */
tul_se2_wait();
for (;;) {
TUL_WR(CurBase + TUL_NVRAM, SE2CS | SE2CLK); /* +CLK */
tul_se2_wait();
TUL_WR(CurBase + TUL_NVRAM, SE2CS); /* -CLK */
tul_se2_wait();
if ((readByte = TUL_RD(CurBase, TUL_NVRAM)) & SE2DI)
break; /* write complete */
}
TUL_WR(CurBase + TUL_NVRAM, 0); /* -CS */
return;
}
/***********************************************************************
Read SCSI H/A configuration parameters from serial EEPROM
************************************************************************/
int tul_se2_rd_all(WORD CurBase)
{
int i;
ULONG chksum = 0;
USHORT *np;
i91unvramp = &i91unvram;
np = (USHORT *) i91unvramp;
for (i = 0; i < 32; i++) {
*np++ = tul_se2_rd(CurBase, i);
}
/*--------------------Is signature "ini" ok ? ----------------*/
if (i91unvramp->NVM_Signature != INI_SIGNATURE)
return -1;
/*---------------------- Is ckecksum ok ? ----------------------*/
np = (USHORT *) i91unvramp;
for (i = 0; i < 31; i++)
chksum += *np++;
if (i91unvramp->NVM_CheckSum != (USHORT) chksum)
return -1;
return 1;
}
/***********************************************************************
Update SCSI H/A configuration parameters from serial EEPROM
************************************************************************/
void tul_se2_update_all(WORD CurBase)
{ /* setup default pattern */
int i;
ULONG chksum = 0;
USHORT *np, *np1;
i91unvramp = &i91unvram;
/* Calculate checksum first */
np = (USHORT *) i91udftNvRam;
for (i = 0; i < 31; i++)
chksum += *np++;
*np = (USHORT) chksum;
tul_se2_ew_en(CurBase); /* Enable write */
np = (USHORT *) i91udftNvRam;
np1 = (USHORT *) i91unvramp;
for (i = 0; i < 32; i++, np++, np1++) {
if (*np != *np1) {
tul_se2_wr(CurBase, i, *np);
}
}
tul_se2_ew_ds(CurBase); /* Disable write */
return;
}
/*************************************************************************
Function name : read_eeprom
**************************************************************************/
void tul_read_eeprom(WORD CurBase)
{
UCHAR gctrl;
i91unvramp = &i91unvram;
/*------Enable EEProm programming ---*/
gctrl = TUL_RD(CurBase, TUL_GCTRL);
TUL_WR(CurBase + TUL_GCTRL, gctrl | TUL_GCTRL_EEPROM_BIT);
if (tul_se2_rd_all(CurBase) != 1) {
tul_se2_update_all(CurBase); /* setup default pattern */
tul_se2_rd_all(CurBase); /* load again */
}
/*------ Disable EEProm programming ---*/
gctrl = TUL_RD(CurBase, TUL_GCTRL);
TUL_WR(CurBase + TUL_GCTRL, gctrl & ~TUL_GCTRL_EEPROM_BIT);
} /* read_eeprom */
static int Addi91u_into_Adapter_table(WORD wBIOS, WORD wBASE, BYTE bInterrupt,
BYTE bBus, BYTE bDevice)
{
int i, j;
for (i = 0; i < MAX_SUPPORTED_ADAPTERS; i++) {
if (i91u_adpt[i].ADPT_BIOS < wBIOS)
continue;
if (i91u_adpt[i].ADPT_BIOS == wBIOS) {
if (i91u_adpt[i].ADPT_BASE == wBASE) {
if (i91u_adpt[i].ADPT_Bus != 0xFF)
return 1;
} else if (i91u_adpt[i].ADPT_BASE < wBASE)
continue;
}
for (j = MAX_SUPPORTED_ADAPTERS - 1; j > i; j--) {
i91u_adpt[j].ADPT_BASE = i91u_adpt[j - 1].ADPT_BASE;
i91u_adpt[j].ADPT_INTR = i91u_adpt[j - 1].ADPT_INTR;
i91u_adpt[j].ADPT_BIOS = i91u_adpt[j - 1].ADPT_BIOS;
i91u_adpt[j].ADPT_Bus = i91u_adpt[j - 1].ADPT_Bus;
i91u_adpt[j].ADPT_Device = i91u_adpt[j - 1].ADPT_Device;
}
i91u_adpt[i].ADPT_BASE = wBASE;
i91u_adpt[i].ADPT_INTR = bInterrupt;
i91u_adpt[i].ADPT_BIOS = wBIOS;
i91u_adpt[i].ADPT_Bus = bBus;
i91u_adpt[i].ADPT_Device = bDevice;
return 0;
}
return 1;
}
static void init_i91uAdapter_table(void)
{
int i;
for (i = 0; i < MAX_SUPPORTED_ADAPTERS; i++) { /* Initialize adapter structure */
i91u_adpt[i].ADPT_BIOS = 0xffff;
i91u_adpt[i].ADPT_BASE = 0xffff;
i91u_adpt[i].ADPT_INTR = 0xff;
i91u_adpt[i].ADPT_Bus = 0xff;
i91u_adpt[i].ADPT_Device = 0xff;
}
return;
}
static void tul_stop_bm(HCS * pCurHcb)
{
if (TUL_RD(pCurHcb->HCS_Base, TUL_XStatus) & XPEND) { /* if DMA xfer is pending, abort DMA xfer */
TUL_WR(pCurHcb->HCS_Base + TUL_XCmd, TAX_X_ABT | TAX_X_CLR_FIFO);
/* wait Abort DMA xfer done */
while ((TUL_RD(pCurHcb->HCS_Base, TUL_Int) & XABT) == 0);
}
TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO);
}
/***************************************************************************/
static void get_tulipPCIConfig(HCS * pCurHcb, int ch_idx)
{
pCurHcb->HCS_Base = i91u_adpt[ch_idx].ADPT_BASE; /* Supply base address */
pCurHcb->HCS_BIOS = i91u_adpt[ch_idx].ADPT_BIOS; /* Supply BIOS address */
pCurHcb->HCS_Intr = i91u_adpt[ch_idx].ADPT_INTR; /* Supply interrupt line */
return;
}
/***************************************************************************/
static int tul_reset_scsi(HCS * pCurHcb, int seconds)
{
TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_RST_BUS);
while (!((pCurHcb->HCS_JSInt = TUL_RD(pCurHcb->HCS_Base, TUL_SInt)) & TSS_SCSIRST_INT));
/* reset tulip chip */
TUL_WR(pCurHcb->HCS_Base + TUL_SSignal, 0);
/* Stall for a while, wait for target's firmware ready,make it 2 sec ! */
/* SONY 5200 tape drive won't work if only stall for 1 sec */
tul_do_pause(seconds * HZ);
TUL_RD(pCurHcb->HCS_Base, TUL_SInt);
return (SCSI_RESET_SUCCESS);
}
/***************************************************************************/
static int init_tulip(HCS * pCurHcb, SCB * scbp, int tul_num_scb,
BYTE * pbBiosAdr, int seconds)
{
int i;
BYTE *pwFlags;
BYTE *pbHeads;
SCB *pTmpScb, *pPrevScb = NULL;
pCurHcb->HCS_NumScbs = tul_num_scb;
pCurHcb->HCS_Semaph = 1;
spin_lock_init(&pCurHcb->HCS_SemaphLock);
pCurHcb->HCS_JSStatus0 = 0;
pCurHcb->HCS_Scb = scbp;
pCurHcb->HCS_NxtPend = scbp;
pCurHcb->HCS_NxtAvail = scbp;
for (i = 0, pTmpScb = scbp; i < tul_num_scb; i++, pTmpScb++) {
pTmpScb->SCB_TagId = i;
if (i != 0)
pPrevScb->SCB_NxtScb = pTmpScb;
pPrevScb = pTmpScb;
}
pPrevScb->SCB_NxtScb = NULL;
pCurHcb->HCS_ScbEnd = pTmpScb;
pCurHcb->HCS_FirstAvail = scbp;
pCurHcb->HCS_LastAvail = pPrevScb;
spin_lock_init(&pCurHcb->HCS_AvailLock);
pCurHcb->HCS_FirstPend = NULL;
pCurHcb->HCS_LastPend = NULL;
pCurHcb->HCS_FirstBusy = NULL;
pCurHcb->HCS_LastBusy = NULL;
pCurHcb->HCS_FirstDone = NULL;
pCurHcb->HCS_LastDone = NULL;
pCurHcb->HCS_ActScb = NULL;
pCurHcb->HCS_ActTcs = NULL;
tul_read_eeprom(pCurHcb->HCS_Base);
/*---------- get H/A configuration -------------*/
if (i91unvramp->NVM_SCSIInfo[0].NVM_NumOfTarg == 8)
pCurHcb->HCS_MaxTar = 8;
else
pCurHcb->HCS_MaxTar = 16;
pCurHcb->HCS_Config = i91unvramp->NVM_SCSIInfo[0].NVM_ChConfig1;
pCurHcb->HCS_SCSI_ID = i91unvramp->NVM_SCSIInfo[0].NVM_ChSCSIID;
pCurHcb->HCS_IdMask = ~(1 << pCurHcb->HCS_SCSI_ID);
#ifdef CHK_PARITY
/* Enable parity error response */
TUL_WR(pCurHcb->HCS_Base + TUL_PCMD, TUL_RD(pCurHcb->HCS_Base, TUL_PCMD) | 0x40);
#endif
/* Mask all the interrupt */
TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x1F);
tul_stop_bm(pCurHcb);
/* --- Initialize the tulip --- */
TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_RST_CHIP);
/* program HBA's SCSI ID */
TUL_WR(pCurHcb->HCS_Base + TUL_SScsiId, pCurHcb->HCS_SCSI_ID << 4);
/* Enable Initiator Mode ,phase latch,alternate sync period mode,
disable SCSI reset */
if (pCurHcb->HCS_Config & HCC_EN_PAR)
pCurHcb->HCS_SConf1 = (TSC_INITDEFAULT | TSC_EN_SCSI_PAR);
else
pCurHcb->HCS_SConf1 = (TSC_INITDEFAULT);
TUL_WR(pCurHcb->HCS_Base + TUL_SConfig, pCurHcb->HCS_SConf1);
/* Enable HW reselect */
TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl1, TSC_HW_RESELECT);
TUL_WR(pCurHcb->HCS_Base + TUL_SPeriod, 0);
/* selection time out = 250 ms */
TUL_WR(pCurHcb->HCS_Base + TUL_STimeOut, 153);
/*--------- Enable SCSI terminator -----*/
TUL_WR(pCurHcb->HCS_Base + TUL_XCtrl, (pCurHcb->HCS_Config & (HCC_ACT_TERM1 | HCC_ACT_TERM2)));
TUL_WR(pCurHcb->HCS_Base + TUL_GCTRL1,
((pCurHcb->HCS_Config & HCC_AUTO_TERM) >> 4) | (TUL_RD(pCurHcb->HCS_Base, TUL_GCTRL1) & 0xFE));
for (i = 0,
pwFlags = & (i91unvramp->NVM_SCSIInfo[0].NVM_Targ0Config),
pbHeads = pbBiosAdr + 0x180;
i < pCurHcb->HCS_MaxTar;
i++, pwFlags++) {
pCurHcb->HCS_Tcs[i].TCS_Flags = *pwFlags & ~(TCF_SYNC_DONE | TCF_WDTR_DONE);
if (pCurHcb->HCS_Tcs[i].TCS_Flags & TCF_EN_255)
pCurHcb->HCS_Tcs[i].TCS_DrvFlags = TCF_DRV_255_63;
else
pCurHcb->HCS_Tcs[i].TCS_DrvFlags = 0;
pCurHcb->HCS_Tcs[i].TCS_JS_Period = 0;
pCurHcb->HCS_Tcs[i].TCS_SConfig0 = pCurHcb->HCS_SConf1;
pCurHcb->HCS_Tcs[i].TCS_DrvHead = *pbHeads++;
if (pCurHcb->HCS_Tcs[i].TCS_DrvHead == 255)
pCurHcb->HCS_Tcs[i].TCS_DrvFlags = TCF_DRV_255_63;
else
pCurHcb->HCS_Tcs[i].TCS_DrvFlags = 0;
pCurHcb->HCS_Tcs[i].TCS_DrvSector = *pbHeads++;
pCurHcb->HCS_Tcs[i].TCS_Flags &= ~TCF_BUSY;
pCurHcb->HCS_ActTags[i] = 0;
pCurHcb->HCS_MaxTags[i] = 0xFF;
} /* for */
printk("i91u: PCI Base=0x%04X, IRQ=%d, BIOS=0x%04X0, SCSI ID=%d\n",
pCurHcb->HCS_Base, pCurHcb->HCS_Intr,
pCurHcb->HCS_BIOS, pCurHcb->HCS_SCSI_ID);
/*------------------- reset SCSI Bus ---------------------------*/
if (pCurHcb->HCS_Config & HCC_SCSI_RESET) {
printk("i91u: Reset SCSI Bus ... \n");
tul_reset_scsi(pCurHcb, seconds);
}
TUL_WR(pCurHcb->HCS_Base + TUL_SCFG1, 0x17);
TUL_WR(pCurHcb->HCS_Base + TUL_SIntEnable, 0xE9);
return (0);
}
/***************************************************************************/
static SCB *tul_alloc_scb(HCS * hcsp)
{
SCB *pTmpScb;
ULONG flags;
spin_lock_irqsave(&(hcsp->HCS_AvailLock), flags);
if ((pTmpScb = hcsp->HCS_FirstAvail) != NULL) {
#if DEBUG_QUEUE
printk("find scb at %08lx\n", (ULONG) pTmpScb);
#endif
if ((hcsp->HCS_FirstAvail = pTmpScb->SCB_NxtScb) == NULL)
hcsp->HCS_LastAvail = NULL;
pTmpScb->SCB_NxtScb = NULL;
pTmpScb->SCB_Status = SCB_RENT;
}
spin_unlock_irqrestore(&(hcsp->HCS_AvailLock), flags);
return (pTmpScb);
}
/***************************************************************************/
static void tul_release_scb(HCS * hcsp, SCB * scbp)
{
ULONG flags;
#if DEBUG_QUEUE
printk("Release SCB %lx; ", (ULONG) scbp);
#endif
spin_lock_irqsave(&(hcsp->HCS_AvailLock), flags);
scbp->SCB_Srb = NULL;
scbp->SCB_Status = 0;
scbp->SCB_NxtScb = NULL;
if (hcsp->HCS_LastAvail != NULL) {
hcsp->HCS_LastAvail->SCB_NxtScb = scbp;
hcsp->HCS_LastAvail = scbp;
} else {
hcsp->HCS_FirstAvail = scbp;
hcsp->HCS_LastAvail = scbp;
}
spin_unlock_irqrestore(&(hcsp->HCS_AvailLock), flags);
}
/***************************************************************************/
static void tul_append_pend_scb(HCS * pCurHcb, SCB * scbp)
{
#if DEBUG_QUEUE
printk("Append pend SCB %lx; ", (ULONG) scbp);
#endif
scbp->SCB_Status = SCB_PEND;
scbp->SCB_NxtScb = NULL;
if (pCurHcb->HCS_LastPend != NULL) {
pCurHcb->HCS_LastPend->SCB_NxtScb = scbp;
pCurHcb->HCS_LastPend = scbp;
} else {
pCurHcb->HCS_FirstPend = scbp;
pCurHcb->HCS_LastPend = scbp;
}
}
/***************************************************************************/
static void tul_push_pend_scb(HCS * pCurHcb, SCB * scbp)
{
#if DEBUG_QUEUE
printk("Push pend SCB %lx; ", (ULONG) scbp);
#endif
scbp->SCB_Status = SCB_PEND;
if ((scbp->SCB_NxtScb = pCurHcb->HCS_FirstPend) != NULL) {
pCurHcb->HCS_FirstPend = scbp;
} else {
pCurHcb->HCS_FirstPend = scbp;
pCurHcb->HCS_LastPend = scbp;
}
}
/***************************************************************************/
static SCB *tul_find_first_pend_scb(HCS * pCurHcb)
{
SCB *pFirstPend;
pFirstPend = pCurHcb->HCS_FirstPend;
while (pFirstPend != NULL) {
if (pFirstPend->SCB_Opcode != ExecSCSI) {
return (pFirstPend);
}
if (pFirstPend->SCB_TagMsg == 0) {
if ((pCurHcb->HCS_ActTags[pFirstPend->SCB_Target] == 0) &&
!(pCurHcb->HCS_Tcs[pFirstPend->SCB_Target].TCS_Flags & TCF_BUSY)) {
return (pFirstPend);
}
} else {
if ((pCurHcb->HCS_ActTags[pFirstPend->SCB_Target] >=
pCurHcb->HCS_MaxTags[pFirstPend->SCB_Target]) |
(pCurHcb->HCS_Tcs[pFirstPend->SCB_Target].TCS_Flags & TCF_BUSY)) {
pFirstPend = pFirstPend->SCB_NxtScb;
continue;
}
return (pFirstPend);
}
pFirstPend = pFirstPend->SCB_NxtScb;
}
return (pFirstPend);
}
/***************************************************************************/
static void tul_unlink_pend_scb(HCS * pCurHcb, SCB * pCurScb)
{
SCB *pTmpScb, *pPrevScb;
#if DEBUG_QUEUE
printk("unlink pend SCB %lx; ", (ULONG) pCurScb);
#endif
pPrevScb = pTmpScb = pCurHcb->HCS_FirstPend;
while (pTmpScb != NULL) {
if (pCurScb == pTmpScb) { /* Unlink this SCB */
if (pTmpScb == pCurHcb->HCS_FirstPend) {
if ((pCurHcb->HCS_FirstPend = pTmpScb->SCB_NxtScb) == NULL)
pCurHcb->HCS_LastPend = NULL;
} else {
pPrevScb->SCB_NxtScb = pTmpScb->SCB_NxtScb;
if (pTmpScb == pCurHcb->HCS_LastPend)
pCurHcb->HCS_LastPend = pPrevScb;
}
pTmpScb->SCB_NxtScb = NULL;
break;
}
pPrevScb = pTmpScb;
pTmpScb = pTmpScb->SCB_NxtScb;
}
return;
}
/***************************************************************************/
static void tul_append_busy_scb(HCS * pCurHcb, SCB * scbp)
{
#if DEBUG_QUEUE
printk("append busy SCB %lx; ", (ULONG) scbp);
#endif
if (scbp->SCB_TagMsg)
pCurHcb->HCS_ActTags[scbp->SCB_Target]++;
else
pCurHcb->HCS_Tcs[scbp->SCB_Target].TCS_Flags |= TCF_BUSY;
scbp->SCB_Status = SCB_BUSY;
scbp->SCB_NxtScb = NULL;
if (pCurHcb->HCS_LastBusy != NULL) {
pCurHcb->HCS_LastBusy->SCB_NxtScb = scbp;
pCurHcb->HCS_LastBusy = scbp;
} else {
pCurHcb->HCS_FirstBusy = scbp;
pCurHcb->HCS_LastBusy = scbp;
}
}
/***************************************************************************/
static SCB *tul_pop_busy_scb(HCS * pCurHcb)
{
SCB *pTmpScb;
if ((pTmpScb = pCurHcb->HCS_FirstBusy) != NULL) {
if ((pCurHcb->HCS_FirstBusy = pTmpScb->SCB_NxtScb) == NULL)
pCurHcb->HCS_LastBusy = NULL;
pTmpScb->SCB_NxtScb = NULL;
if (pTmpScb->SCB_TagMsg)
pCurHcb->HCS_ActTags[pTmpScb->SCB_Target]--;
else
pCurHcb->HCS_Tcs[pTmpScb->SCB_Target].TCS_Flags &= ~TCF_BUSY;
}
#if DEBUG_QUEUE
printk("Pop busy SCB %lx; ", (ULONG) pTmpScb);
#endif
return (pTmpScb);
}
/***************************************************************************/
static void tul_unlink_busy_scb(HCS * pCurHcb, SCB * pCurScb)
{
SCB *pTmpScb, *pPrevScb;
#if DEBUG_QUEUE
printk("unlink busy SCB %lx; ", (ULONG) pCurScb);
#endif
pPrevScb = pTmpScb = pCurHcb->HCS_FirstBusy;
while (pTmpScb != NULL) {
if (pCurScb == pTmpScb) { /* Unlink this SCB */
if (pTmpScb == pCurHcb->HCS_FirstBusy) {
if ((pCurHcb->HCS_FirstBusy = pTmpScb->SCB_NxtScb) == NULL)
pCurHcb->HCS_LastBusy = NULL;
} else {
pPrevScb->SCB_NxtScb = pTmpScb->SCB_NxtScb;
if (pTmpScb == pCurHcb->HCS_LastBusy)
pCurHcb->HCS_LastBusy = pPrevScb;
}
pTmpScb->SCB_NxtScb = NULL;
if (pTmpScb->SCB_TagMsg)
pCurHcb->HCS_ActTags[pTmpScb->SCB_Target]--;
else
pCurHcb->HCS_Tcs[pTmpScb->SCB_Target].TCS_Flags &= ~TCF_BUSY;
break;
}
pPrevScb = pTmpScb;
pTmpScb = pTmpScb->SCB_NxtScb;
}
return;
}
/***************************************************************************/