forked from torvalds/linux
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathw6692.c
1084 lines (1012 loc) · 28.7 KB
/
w6692.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: w6692.c,v 1.18.2.4 2004/02/11 13:21:34 keil Exp $
*
* Winbond W6692 specific routines
*
* Author Petr Novak
* Copyright by Petr Novak <[email protected]>
*
* This software may be used and distributed according to the terms
* of the GNU General Public License, incorporated herein by reference.
*
*/
#include <linux/init.h>
#include "hisax.h"
#include "w6692.h"
#include "isdnl1.h"
#include <linux/interrupt.h>
#include <linux/pci.h>
#include <linux/slab.h>
/* table entry in the PCI devices list */
typedef struct {
int vendor_id;
int device_id;
char *vendor_name;
char *card_name;
} PCI_ENTRY;
static const PCI_ENTRY id_list[] =
{
{PCI_VENDOR_ID_WINBOND2, PCI_DEVICE_ID_WINBOND2_6692, "Winbond", "W6692"},
{PCI_VENDOR_ID_DYNALINK, PCI_DEVICE_ID_DYNALINK_IS64PH, "Dynalink/AsusCom", "IS64PH"},
{0, 0, "U.S.Robotics", "ISDN PCI Card TA"}
};
#define W6692_SV_USR 0x16ec
#define W6692_SD_USR 0x3409
#define W6692_WINBOND 0
#define W6692_DYNALINK 1
#define W6692_USR 2
static const char *w6692_revision = "$Revision: 1.18.2.4 $";
#define DBUSY_TIMER_VALUE 80
static char *W6692Ver[] =
{"W6692 V00", "W6692 V01", "W6692 V10",
"W6692 V11"};
static void
W6692Version(struct IsdnCardState *cs, char *s)
{
int val;
val = cs->readW6692(cs, W_D_RBCH);
printk(KERN_INFO "%s Winbond W6692 version (%x): %s\n", s, val, W6692Ver[(val >> 6) & 3]);
}
static void
ph_command(struct IsdnCardState *cs, unsigned int command)
{
if (cs->debug & L1_DEB_ISAC)
debugl1(cs, "ph_command %x", command);
cs->writeisac(cs, W_CIX, command);
}
static void
W6692_new_ph(struct IsdnCardState *cs)
{
switch (cs->dc.w6692.ph_state) {
case (W_L1CMD_RST):
ph_command(cs, W_L1CMD_DRC);
l1_msg(cs, HW_RESET | INDICATION, NULL);
/* fallthru */
case (W_L1IND_CD):
l1_msg(cs, HW_DEACTIVATE | CONFIRM, NULL);
break;
case (W_L1IND_DRD):
l1_msg(cs, HW_DEACTIVATE | INDICATION, NULL);
break;
case (W_L1IND_CE):
l1_msg(cs, HW_POWERUP | CONFIRM, NULL);
break;
case (W_L1IND_LD):
l1_msg(cs, HW_RSYNC | INDICATION, NULL);
break;
case (W_L1IND_ARD):
l1_msg(cs, HW_INFO2 | INDICATION, NULL);
break;
case (W_L1IND_AI8):
l1_msg(cs, HW_INFO4_P8 | INDICATION, NULL);
break;
case (W_L1IND_AI10):
l1_msg(cs, HW_INFO4_P10 | INDICATION, NULL);
break;
default:
break;
}
}
static void
W6692_bh(struct work_struct *work)
{
struct IsdnCardState *cs =
container_of(work, struct IsdnCardState, tqueue);
struct PStack *stptr;
if (test_and_clear_bit(D_CLEARBUSY, &cs->event)) {
if (cs->debug)
debugl1(cs, "D-Channel Busy cleared");
stptr = cs->stlist;
while (stptr != NULL) {
stptr->l1.l1l2(stptr, PH_PAUSE | CONFIRM, NULL);
stptr = stptr->next;
}
}
if (test_and_clear_bit(D_L1STATECHANGE, &cs->event))
W6692_new_ph(cs);
if (test_and_clear_bit(D_RCVBUFREADY, &cs->event))
DChannel_proc_rcv(cs);
if (test_and_clear_bit(D_XMTBUFREADY, &cs->event))
DChannel_proc_xmt(cs);
/*
if (test_and_clear_bit(D_RX_MON1, &cs->event))
arcofi_fsm(cs, ARCOFI_RX_END, NULL);
if (test_and_clear_bit(D_TX_MON1, &cs->event))
arcofi_fsm(cs, ARCOFI_TX_END, NULL);
*/
}
static void
W6692_empty_fifo(struct IsdnCardState *cs, int count)
{
u_char *ptr;
if ((cs->debug & L1_DEB_ISAC) && !(cs->debug & L1_DEB_ISAC_FIFO))
debugl1(cs, "W6692_empty_fifo");
if ((cs->rcvidx + count) >= MAX_DFRAME_LEN_L1) {
if (cs->debug & L1_DEB_WARN)
debugl1(cs, "W6692_empty_fifo overrun %d",
cs->rcvidx + count);
cs->writeW6692(cs, W_D_CMDR, W_D_CMDR_RACK);
cs->rcvidx = 0;
return;
}
ptr = cs->rcvbuf + cs->rcvidx;
cs->rcvidx += count;
cs->readW6692fifo(cs, ptr, count);
cs->writeW6692(cs, W_D_CMDR, W_D_CMDR_RACK);
if (cs->debug & L1_DEB_ISAC_FIFO) {
char *t = cs->dlog;
t += sprintf(t, "W6692_empty_fifo cnt %d", count);
QuickHex(t, ptr, count);
debugl1(cs, "%s", cs->dlog);
}
}
static void
W6692_fill_fifo(struct IsdnCardState *cs)
{
int count, more;
u_char *ptr;
if ((cs->debug & L1_DEB_ISAC) && !(cs->debug & L1_DEB_ISAC_FIFO))
debugl1(cs, "W6692_fill_fifo");
if (!cs->tx_skb)
return;
count = cs->tx_skb->len;
if (count <= 0)
return;
more = 0;
if (count > W_D_FIFO_THRESH) {
more = !0;
count = W_D_FIFO_THRESH;
}
ptr = cs->tx_skb->data;
skb_pull(cs->tx_skb, count);
cs->tx_cnt += count;
cs->writeW6692fifo(cs, ptr, count);
cs->writeW6692(cs, W_D_CMDR, more ? W_D_CMDR_XMS : (W_D_CMDR_XMS | W_D_CMDR_XME));
if (test_and_set_bit(FLG_DBUSY_TIMER, &cs->HW_Flags)) {
debugl1(cs, "W6692_fill_fifo dbusytimer running");
del_timer(&cs->dbusytimer);
}
init_timer(&cs->dbusytimer);
cs->dbusytimer.expires = jiffies + ((DBUSY_TIMER_VALUE * HZ) / 1000);
add_timer(&cs->dbusytimer);
if (cs->debug & L1_DEB_ISAC_FIFO) {
char *t = cs->dlog;
t += sprintf(t, "W6692_fill_fifo cnt %d", count);
QuickHex(t, ptr, count);
debugl1(cs, "%s", cs->dlog);
}
}
static void
W6692B_empty_fifo(struct BCState *bcs, int count)
{
u_char *ptr;
struct IsdnCardState *cs = bcs->cs;
if ((cs->debug & L1_DEB_HSCX) && !(cs->debug & L1_DEB_HSCX_FIFO))
debugl1(cs, "W6692B_empty_fifo");
if (bcs->hw.w6692.rcvidx + count > HSCX_BUFMAX) {
if (cs->debug & L1_DEB_WARN)
debugl1(cs, "W6692B_empty_fifo: incoming packet too large");
cs->BC_Write_Reg(cs, bcs->channel, W_B_CMDR, W_B_CMDR_RACK | W_B_CMDR_RACT);
bcs->hw.w6692.rcvidx = 0;
return;
}
ptr = bcs->hw.w6692.rcvbuf + bcs->hw.w6692.rcvidx;
bcs->hw.w6692.rcvidx += count;
READW6692BFIFO(cs, bcs->channel, ptr, count);
cs->BC_Write_Reg(cs, bcs->channel, W_B_CMDR, W_B_CMDR_RACK | W_B_CMDR_RACT);
if (cs->debug & L1_DEB_HSCX_FIFO) {
char *t = bcs->blog;
t += sprintf(t, "W6692B_empty_fifo %c cnt %d",
bcs->channel + '1', count);
QuickHex(t, ptr, count);
debugl1(cs, "%s", bcs->blog);
}
}
static void
W6692B_fill_fifo(struct BCState *bcs)
{
struct IsdnCardState *cs = bcs->cs;
int more, count;
u_char *ptr;
if (!bcs->tx_skb)
return;
if (bcs->tx_skb->len <= 0)
return;
more = (bcs->mode == L1_MODE_TRANS) ? 1 : 0;
if (bcs->tx_skb->len > W_B_FIFO_THRESH) {
more = 1;
count = W_B_FIFO_THRESH;
} else
count = bcs->tx_skb->len;
if ((cs->debug & L1_DEB_HSCX) && !(cs->debug & L1_DEB_HSCX_FIFO))
debugl1(cs, "W6692B_fill_fifo%s%d", (more ? " " : " last "), count);
ptr = bcs->tx_skb->data;
skb_pull(bcs->tx_skb, count);
bcs->tx_cnt -= count;
bcs->hw.w6692.count += count;
WRITEW6692BFIFO(cs, bcs->channel, ptr, count);
cs->BC_Write_Reg(cs, bcs->channel, W_B_CMDR, W_B_CMDR_RACT | W_B_CMDR_XMS | (more ? 0 : W_B_CMDR_XME));
if (cs->debug & L1_DEB_HSCX_FIFO) {
char *t = bcs->blog;
t += sprintf(t, "W6692B_fill_fifo %c cnt %d",
bcs->channel + '1', count);
QuickHex(t, ptr, count);
debugl1(cs, "%s", bcs->blog);
}
}
static void
W6692B_interrupt(struct IsdnCardState *cs, u_char bchan)
{
u_char val;
u_char r;
struct BCState *bcs;
struct sk_buff *skb;
int count;
bcs = (cs->bcs->channel == bchan) ? cs->bcs : (cs->bcs + 1);
val = cs->BC_Read_Reg(cs, bchan, W_B_EXIR);
debugl1(cs, "W6692B chan %d B_EXIR 0x%02X", bchan, val);
if (!test_bit(BC_FLG_INIT, &bcs->Flag)) {
debugl1(cs, "W6692B not INIT yet");
return;
}
if (val & W_B_EXI_RME) { /* RME */
r = cs->BC_Read_Reg(cs, bchan, W_B_STAR);
if (r & (W_B_STAR_RDOV | W_B_STAR_CRCE | W_B_STAR_RMB)) {
if (cs->debug & L1_DEB_WARN)
debugl1(cs, "W6692 B STAR %x", r);
if ((r & W_B_STAR_RDOV) && bcs->mode)
if (cs->debug & L1_DEB_WARN)
debugl1(cs, "W6692 B RDOV mode=%d",
bcs->mode);
if (r & W_B_STAR_CRCE)
if (cs->debug & L1_DEB_WARN)
debugl1(cs, "W6692 B CRC error");
cs->BC_Write_Reg(cs, bchan, W_B_CMDR, W_B_CMDR_RACK | W_B_CMDR_RRST | W_B_CMDR_RACT);
} else {
count = cs->BC_Read_Reg(cs, bchan, W_B_RBCL) & (W_B_FIFO_THRESH - 1);
if (count == 0)
count = W_B_FIFO_THRESH;
W6692B_empty_fifo(bcs, count);
if ((count = bcs->hw.w6692.rcvidx) > 0) {
if (cs->debug & L1_DEB_HSCX_FIFO)
debugl1(cs, "W6692 Bchan Frame %d", count);
if (!(skb = dev_alloc_skb(count)))
printk(KERN_WARNING "W6692: Bchan receive out of memory\n");
else {
memcpy(skb_put(skb, count), bcs->hw.w6692.rcvbuf, count);
skb_queue_tail(&bcs->rqueue, skb);
}
}
}
bcs->hw.w6692.rcvidx = 0;
schedule_event(bcs, B_RCVBUFREADY);
}
if (val & W_B_EXI_RMR) { /* RMR */
W6692B_empty_fifo(bcs, W_B_FIFO_THRESH);
r = cs->BC_Read_Reg(cs, bchan, W_B_STAR);
if (r & W_B_STAR_RDOV) {
if (cs->debug & L1_DEB_WARN)
debugl1(cs, "W6692 B RDOV(RMR) mode=%d", bcs->mode);
cs->BC_Write_Reg(cs, bchan, W_B_CMDR, W_B_CMDR_RACK | W_B_CMDR_RRST | W_B_CMDR_RACT);
if (bcs->mode != L1_MODE_TRANS)
bcs->hw.w6692.rcvidx = 0;
}
if (bcs->mode == L1_MODE_TRANS) {
/* receive audio data */
if (!(skb = dev_alloc_skb(W_B_FIFO_THRESH)))
printk(KERN_WARNING "HiSax: receive out of memory\n");
else {
memcpy(skb_put(skb, W_B_FIFO_THRESH), bcs->hw.w6692.rcvbuf, W_B_FIFO_THRESH);
skb_queue_tail(&bcs->rqueue, skb);
}
bcs->hw.w6692.rcvidx = 0;
schedule_event(bcs, B_RCVBUFREADY);
}
}
if (val & W_B_EXI_XDUN) { /* XDUN */
cs->BC_Write_Reg(cs, bchan, W_B_CMDR, W_B_CMDR_XRST | W_B_CMDR_RACT);
if (cs->debug & L1_DEB_WARN)
debugl1(cs, "W6692 B EXIR %x Lost TX", val);
if (bcs->mode == 1)
W6692B_fill_fifo(bcs);
else {
/* Here we lost an TX interrupt, so
* restart transmitting the whole frame.
*/
if (bcs->tx_skb) {
skb_push(bcs->tx_skb, bcs->hw.w6692.count);
bcs->tx_cnt += bcs->hw.w6692.count;
bcs->hw.w6692.count = 0;
}
}
return;
}
if (val & W_B_EXI_XFR) { /* XFR */
r = cs->BC_Read_Reg(cs, bchan, W_B_STAR);
if (r & W_B_STAR_XDOW) {
if (cs->debug & L1_DEB_WARN)
debugl1(cs, "W6692 B STAR %x XDOW", r);
cs->BC_Write_Reg(cs, bchan, W_B_CMDR, W_B_CMDR_XRST | W_B_CMDR_RACT);
if (bcs->tx_skb && (bcs->mode != 1)) {
skb_push(bcs->tx_skb, bcs->hw.w6692.count);
bcs->tx_cnt += bcs->hw.w6692.count;
bcs->hw.w6692.count = 0;
}
}
if (bcs->tx_skb) {
if (bcs->tx_skb->len) {
W6692B_fill_fifo(bcs);
return;
} else {
if (test_bit(FLG_LLI_L1WAKEUP, &bcs->st->lli.flag) &&
(PACKET_NOACK != bcs->tx_skb->pkt_type)) {
u_long flags;
spin_lock_irqsave(&bcs->aclock, flags);
bcs->ackcnt += bcs->hw.w6692.count;
spin_unlock_irqrestore(&bcs->aclock, flags);
schedule_event(bcs, B_ACKPENDING);
}
dev_kfree_skb_irq(bcs->tx_skb);
bcs->hw.w6692.count = 0;
bcs->tx_skb = NULL;
}
}
if ((bcs->tx_skb = skb_dequeue(&bcs->squeue))) {
bcs->hw.w6692.count = 0;
test_and_set_bit(BC_FLG_BUSY, &bcs->Flag);
W6692B_fill_fifo(bcs);
} else {
test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
schedule_event(bcs, B_XMTBUFREADY);
}
}
}
static irqreturn_t
W6692_interrupt(int intno, void *dev_id)
{
struct IsdnCardState *cs = dev_id;
u_char val, exval, v1;
struct sk_buff *skb;
u_int count;
u_long flags;
int icnt = 5;
spin_lock_irqsave(&cs->lock, flags);
val = cs->readW6692(cs, W_ISTA);
if (!val) {
spin_unlock_irqrestore(&cs->lock, flags);
return IRQ_NONE;
}
StartW6692:
if (cs->debug & L1_DEB_ISAC)
debugl1(cs, "W6692 ISTA %x", val);
if (val & W_INT_D_RME) { /* RME */
exval = cs->readW6692(cs, W_D_RSTA);
if (exval & (W_D_RSTA_RDOV | W_D_RSTA_CRCE | W_D_RSTA_RMB)) {
if (exval & W_D_RSTA_RDOV)
if (cs->debug & L1_DEB_WARN)
debugl1(cs, "W6692 RDOV");
if (exval & W_D_RSTA_CRCE)
if (cs->debug & L1_DEB_WARN)
debugl1(cs, "W6692 D-channel CRC error");
if (exval & W_D_RSTA_RMB)
if (cs->debug & L1_DEB_WARN)
debugl1(cs, "W6692 D-channel ABORT");
cs->writeW6692(cs, W_D_CMDR, W_D_CMDR_RACK | W_D_CMDR_RRST);
} else {
count = cs->readW6692(cs, W_D_RBCL) & (W_D_FIFO_THRESH - 1);
if (count == 0)
count = W_D_FIFO_THRESH;
W6692_empty_fifo(cs, count);
if ((count = cs->rcvidx) > 0) {
cs->rcvidx = 0;
if (!(skb = alloc_skb(count, GFP_ATOMIC)))
printk(KERN_WARNING "HiSax: D receive out of memory\n");
else {
memcpy(skb_put(skb, count), cs->rcvbuf, count);
skb_queue_tail(&cs->rq, skb);
}
}
}
cs->rcvidx = 0;
schedule_event(cs, D_RCVBUFREADY);
}
if (val & W_INT_D_RMR) { /* RMR */
W6692_empty_fifo(cs, W_D_FIFO_THRESH);
}
if (val & W_INT_D_XFR) { /* XFR */
if (test_and_clear_bit(FLG_DBUSY_TIMER, &cs->HW_Flags))
del_timer(&cs->dbusytimer);
if (test_and_clear_bit(FLG_L1_DBUSY, &cs->HW_Flags))
schedule_event(cs, D_CLEARBUSY);
if (cs->tx_skb) {
if (cs->tx_skb->len) {
W6692_fill_fifo(cs);
goto afterXFR;
} else {
dev_kfree_skb_irq(cs->tx_skb);
cs->tx_cnt = 0;
cs->tx_skb = NULL;
}
}
if ((cs->tx_skb = skb_dequeue(&cs->sq))) {
cs->tx_cnt = 0;
W6692_fill_fifo(cs);
} else
schedule_event(cs, D_XMTBUFREADY);
}
afterXFR:
if (val & (W_INT_XINT0 | W_INT_XINT1)) { /* XINT0/1 - never */
if (cs->debug & L1_DEB_ISAC)
debugl1(cs, "W6692 spurious XINT!");
}
if (val & W_INT_D_EXI) { /* EXI */
exval = cs->readW6692(cs, W_D_EXIR);
if (cs->debug & L1_DEB_WARN)
debugl1(cs, "W6692 D_EXIR %02x", exval);
if (exval & (W_D_EXI_XDUN | W_D_EXI_XCOL)) { /* Transmit underrun/collision */
debugl1(cs, "W6692 D-chan underrun/collision");
printk(KERN_WARNING "HiSax: W6692 XDUN/XCOL\n");
if (test_and_clear_bit(FLG_DBUSY_TIMER, &cs->HW_Flags))
del_timer(&cs->dbusytimer);
if (test_and_clear_bit(FLG_L1_DBUSY, &cs->HW_Flags))
schedule_event(cs, D_CLEARBUSY);
if (cs->tx_skb) { /* Restart frame */
skb_push(cs->tx_skb, cs->tx_cnt);
cs->tx_cnt = 0;
W6692_fill_fifo(cs);
} else {
printk(KERN_WARNING "HiSax: W6692 XDUN/XCOL no skb\n");
debugl1(cs, "W6692 XDUN/XCOL no skb");
cs->writeW6692(cs, W_D_CMDR, W_D_CMDR_XRST);
}
}
if (exval & W_D_EXI_RDOV) { /* RDOV */
debugl1(cs, "W6692 D-channel RDOV");
printk(KERN_WARNING "HiSax: W6692 D-RDOV\n");
cs->writeW6692(cs, W_D_CMDR, W_D_CMDR_RRST);
}
if (exval & W_D_EXI_TIN2) { /* TIN2 - never */
debugl1(cs, "W6692 spurious TIN2 interrupt");
}
if (exval & W_D_EXI_MOC) { /* MOC - not supported */
debugl1(cs, "W6692 spurious MOC interrupt");
v1 = cs->readW6692(cs, W_MOSR);
debugl1(cs, "W6692 MOSR %02x", v1);
}
if (exval & W_D_EXI_ISC) { /* ISC - Level1 change */
v1 = cs->readW6692(cs, W_CIR);
if (cs->debug & L1_DEB_ISAC)
debugl1(cs, "W6692 ISC CIR=0x%02X", v1);
if (v1 & W_CIR_ICC) {
cs->dc.w6692.ph_state = v1 & W_CIR_COD_MASK;
if (cs->debug & L1_DEB_ISAC)
debugl1(cs, "ph_state_change %x", cs->dc.w6692.ph_state);
schedule_event(cs, D_L1STATECHANGE);
}
if (v1 & W_CIR_SCC) {
v1 = cs->readW6692(cs, W_SQR);
debugl1(cs, "W6692 SCC SQR=0x%02X", v1);
}
}
if (exval & W_D_EXI_WEXP) {
debugl1(cs, "W6692 spurious WEXP interrupt!");
}
if (exval & W_D_EXI_TEXP) {
debugl1(cs, "W6692 spurious TEXP interrupt!");
}
}
if (val & W_INT_B1_EXI) {
debugl1(cs, "W6692 B channel 1 interrupt");
W6692B_interrupt(cs, 0);
}
if (val & W_INT_B2_EXI) {
debugl1(cs, "W6692 B channel 2 interrupt");
W6692B_interrupt(cs, 1);
}
val = cs->readW6692(cs, W_ISTA);
if (val && icnt) {
icnt--;
goto StartW6692;
}
if (!icnt) {
printk(KERN_WARNING "W6692 IRQ LOOP\n");
cs->writeW6692(cs, W_IMASK, 0xff);
}
spin_unlock_irqrestore(&cs->lock, flags);
return IRQ_HANDLED;
}
static void
W6692_l1hw(struct PStack *st, int pr, void *arg)
{
struct IsdnCardState *cs = (struct IsdnCardState *) st->l1.hardware;
struct sk_buff *skb = arg;
u_long flags;
int val;
switch (pr) {
case (PH_DATA | REQUEST):
if (cs->debug & DEB_DLOG_HEX)
LogFrame(cs, skb->data, skb->len);
if (cs->debug & DEB_DLOG_VERBOSE)
dlogframe(cs, skb, 0);
spin_lock_irqsave(&cs->lock, flags);
if (cs->tx_skb) {
skb_queue_tail(&cs->sq, skb);
#ifdef L2FRAME_DEBUG /* psa */
if (cs->debug & L1_DEB_LAPD)
Logl2Frame(cs, skb, "PH_DATA Queued", 0);
#endif
} else {
cs->tx_skb = skb;
cs->tx_cnt = 0;
#ifdef L2FRAME_DEBUG /* psa */
if (cs->debug & L1_DEB_LAPD)
Logl2Frame(cs, skb, "PH_DATA", 0);
#endif
W6692_fill_fifo(cs);
}
spin_unlock_irqrestore(&cs->lock, flags);
break;
case (PH_PULL | INDICATION):
spin_lock_irqsave(&cs->lock, flags);
if (cs->tx_skb) {
if (cs->debug & L1_DEB_WARN)
debugl1(cs, " l2l1 tx_skb exist this shouldn't happen");
skb_queue_tail(&cs->sq, skb);
spin_unlock_irqrestore(&cs->lock, flags);
break;
}
if (cs->debug & DEB_DLOG_HEX)
LogFrame(cs, skb->data, skb->len);
if (cs->debug & DEB_DLOG_VERBOSE)
dlogframe(cs, skb, 0);
cs->tx_skb = skb;
cs->tx_cnt = 0;
#ifdef L2FRAME_DEBUG /* psa */
if (cs->debug & L1_DEB_LAPD)
Logl2Frame(cs, skb, "PH_DATA_PULLED", 0);
#endif
W6692_fill_fifo(cs);
spin_unlock_irqrestore(&cs->lock, flags);
break;
case (PH_PULL | REQUEST):
#ifdef L2FRAME_DEBUG /* psa */
if (cs->debug & L1_DEB_LAPD)
debugl1(cs, "-> PH_REQUEST_PULL");
#endif
if (!cs->tx_skb) {
test_and_clear_bit(FLG_L1_PULL_REQ, &st->l1.Flags);
st->l1.l1l2(st, PH_PULL | CONFIRM, NULL);
} else
test_and_set_bit(FLG_L1_PULL_REQ, &st->l1.Flags);
break;
case (HW_RESET | REQUEST):
spin_lock_irqsave(&cs->lock, flags);
if ((cs->dc.w6692.ph_state == W_L1IND_DRD)) {
ph_command(cs, W_L1CMD_ECK);
spin_unlock_irqrestore(&cs->lock, flags);
} else {
ph_command(cs, W_L1CMD_RST);
cs->dc.w6692.ph_state = W_L1CMD_RST;
spin_unlock_irqrestore(&cs->lock, flags);
W6692_new_ph(cs);
}
break;
case (HW_ENABLE | REQUEST):
spin_lock_irqsave(&cs->lock, flags);
ph_command(cs, W_L1CMD_ECK);
spin_unlock_irqrestore(&cs->lock, flags);
break;
case (HW_INFO3 | REQUEST):
spin_lock_irqsave(&cs->lock, flags);
ph_command(cs, W_L1CMD_AR8);
spin_unlock_irqrestore(&cs->lock, flags);
break;
case (HW_TESTLOOP | REQUEST):
val = 0;
if (1 & (long) arg)
val |= 0x0c;
if (2 & (long) arg)
val |= 0x3;
/* !!! not implemented yet */
break;
case (HW_DEACTIVATE | RESPONSE):
skb_queue_purge(&cs->rq);
skb_queue_purge(&cs->sq);
if (cs->tx_skb) {
dev_kfree_skb_any(cs->tx_skb);
cs->tx_skb = NULL;
}
if (test_and_clear_bit(FLG_DBUSY_TIMER, &cs->HW_Flags))
del_timer(&cs->dbusytimer);
if (test_and_clear_bit(FLG_L1_DBUSY, &cs->HW_Flags))
schedule_event(cs, D_CLEARBUSY);
break;
default:
if (cs->debug & L1_DEB_WARN)
debugl1(cs, "W6692_l1hw unknown %04x", pr);
break;
}
}
static void
setstack_W6692(struct PStack *st, struct IsdnCardState *cs)
{
st->l1.l1hw = W6692_l1hw;
}
static void
DC_Close_W6692(struct IsdnCardState *cs)
{
}
static void
dbusy_timer_handler(struct IsdnCardState *cs)
{
struct PStack *stptr;
int rbch, star;
u_long flags;
spin_lock_irqsave(&cs->lock, flags);
if (test_bit(FLG_DBUSY_TIMER, &cs->HW_Flags)) {
rbch = cs->readW6692(cs, W_D_RBCH);
star = cs->readW6692(cs, W_D_STAR);
if (cs->debug)
debugl1(cs, "D-Channel Busy D_RBCH %02x D_STAR %02x",
rbch, star);
if (star & W_D_STAR_XBZ) { /* D-Channel Busy */
test_and_set_bit(FLG_L1_DBUSY, &cs->HW_Flags);
stptr = cs->stlist;
while (stptr != NULL) {
stptr->l1.l1l2(stptr, PH_PAUSE | INDICATION, NULL);
stptr = stptr->next;
}
} else {
/* discard frame; reset transceiver */
test_and_clear_bit(FLG_DBUSY_TIMER, &cs->HW_Flags);
if (cs->tx_skb) {
dev_kfree_skb_any(cs->tx_skb);
cs->tx_cnt = 0;
cs->tx_skb = NULL;
} else {
printk(KERN_WARNING "HiSax: W6692 D-Channel Busy no skb\n");
debugl1(cs, "D-Channel Busy no skb");
}
cs->writeW6692(cs, W_D_CMDR, W_D_CMDR_XRST); /* Transmitter reset */
spin_unlock_irqrestore(&cs->lock, flags);
cs->irq_func(cs->irq, cs);
return;
}
}
spin_unlock_irqrestore(&cs->lock, flags);
}
static void
W6692Bmode(struct BCState *bcs, int mode, int bchan)
{
struct IsdnCardState *cs = bcs->cs;
if (cs->debug & L1_DEB_HSCX)
debugl1(cs, "w6692 %c mode %d ichan %d",
'1' + bchan, mode, bchan);
bcs->mode = mode;
bcs->channel = bchan;
bcs->hw.w6692.bchan = bchan;
switch (mode) {
case (L1_MODE_NULL):
cs->BC_Write_Reg(cs, bchan, W_B_MODE, 0);
break;
case (L1_MODE_TRANS):
cs->BC_Write_Reg(cs, bchan, W_B_MODE, W_B_MODE_MMS);
break;
case (L1_MODE_HDLC):
cs->BC_Write_Reg(cs, bchan, W_B_MODE, W_B_MODE_ITF);
cs->BC_Write_Reg(cs, bchan, W_B_ADM1, 0xff);
cs->BC_Write_Reg(cs, bchan, W_B_ADM2, 0xff);
break;
}
if (mode)
cs->BC_Write_Reg(cs, bchan, W_B_CMDR, W_B_CMDR_RRST |
W_B_CMDR_RACT | W_B_CMDR_XRST);
cs->BC_Write_Reg(cs, bchan, W_B_EXIM, 0x00);
}
static void
W6692_l2l1(struct PStack *st, int pr, void *arg)
{
struct sk_buff *skb = arg;
struct BCState *bcs = st->l1.bcs;
u_long flags;
switch (pr) {
case (PH_DATA | REQUEST):
spin_lock_irqsave(&bcs->cs->lock, flags);
if (bcs->tx_skb) {
skb_queue_tail(&bcs->squeue, skb);
} else {
bcs->tx_skb = skb;
test_and_set_bit(BC_FLG_BUSY, &bcs->Flag);
bcs->hw.w6692.count = 0;
bcs->cs->BC_Send_Data(bcs);
}
spin_unlock_irqrestore(&bcs->cs->lock, flags);
break;
case (PH_PULL | INDICATION):
if (bcs->tx_skb) {
printk(KERN_WARNING "W6692_l2l1: this shouldn't happen\n");
break;
}
spin_lock_irqsave(&bcs->cs->lock, flags);
test_and_set_bit(BC_FLG_BUSY, &bcs->Flag);
bcs->tx_skb = skb;
bcs->hw.w6692.count = 0;
bcs->cs->BC_Send_Data(bcs);
spin_unlock_irqrestore(&bcs->cs->lock, flags);
break;
case (PH_PULL | REQUEST):
if (!bcs->tx_skb) {
test_and_clear_bit(FLG_L1_PULL_REQ, &st->l1.Flags);
st->l1.l1l2(st, PH_PULL | CONFIRM, NULL);
} else
test_and_set_bit(FLG_L1_PULL_REQ, &st->l1.Flags);
break;
case (PH_ACTIVATE | REQUEST):
spin_lock_irqsave(&bcs->cs->lock, flags);
test_and_set_bit(BC_FLG_ACTIV, &bcs->Flag);
W6692Bmode(bcs, st->l1.mode, st->l1.bc);
spin_unlock_irqrestore(&bcs->cs->lock, flags);
l1_msg_b(st, pr, arg);
break;
case (PH_DEACTIVATE | REQUEST):
l1_msg_b(st, pr, arg);
break;
case (PH_DEACTIVATE | CONFIRM):
spin_lock_irqsave(&bcs->cs->lock, flags);
test_and_clear_bit(BC_FLG_ACTIV, &bcs->Flag);
test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
W6692Bmode(bcs, 0, st->l1.bc);
spin_unlock_irqrestore(&bcs->cs->lock, flags);
st->l1.l1l2(st, PH_DEACTIVATE | CONFIRM, NULL);
break;
}
}
static void
close_w6692state(struct BCState *bcs)
{
W6692Bmode(bcs, 0, bcs->channel);
if (test_and_clear_bit(BC_FLG_INIT, &bcs->Flag)) {
kfree(bcs->hw.w6692.rcvbuf);
bcs->hw.w6692.rcvbuf = NULL;
kfree(bcs->blog);
bcs->blog = NULL;
skb_queue_purge(&bcs->rqueue);
skb_queue_purge(&bcs->squeue);
if (bcs->tx_skb) {
dev_kfree_skb_any(bcs->tx_skb);
bcs->tx_skb = NULL;
test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
}
}
}
static int
open_w6692state(struct IsdnCardState *cs, struct BCState *bcs)
{
if (!test_and_set_bit(BC_FLG_INIT, &bcs->Flag)) {
if (!(bcs->hw.w6692.rcvbuf = kmalloc(HSCX_BUFMAX, GFP_ATOMIC))) {
printk(KERN_WARNING
"HiSax: No memory for w6692.rcvbuf\n");
test_and_clear_bit(BC_FLG_INIT, &bcs->Flag);
return (1);
}
if (!(bcs->blog = kmalloc(MAX_BLOG_SPACE, GFP_ATOMIC))) {
printk(KERN_WARNING
"HiSax: No memory for bcs->blog\n");
test_and_clear_bit(BC_FLG_INIT, &bcs->Flag);
kfree(bcs->hw.w6692.rcvbuf);
bcs->hw.w6692.rcvbuf = NULL;
return (2);
}
skb_queue_head_init(&bcs->rqueue);
skb_queue_head_init(&bcs->squeue);
}
bcs->tx_skb = NULL;
test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
bcs->event = 0;
bcs->hw.w6692.rcvidx = 0;
bcs->tx_cnt = 0;
return (0);
}
static int
setstack_w6692(struct PStack *st, struct BCState *bcs)
{
bcs->channel = st->l1.bc;
if (open_w6692state(st->l1.hardware, bcs))
return (-1);
st->l1.bcs = bcs;
st->l2.l2l1 = W6692_l2l1;
setstack_manager(st);
bcs->st = st;
setstack_l1_B(st);
return (0);
}
static void resetW6692(struct IsdnCardState *cs)
{
cs->writeW6692(cs, W_D_CTL, W_D_CTL_SRST);
mdelay(10);
cs->writeW6692(cs, W_D_CTL, 0x00);
mdelay(10);
cs->writeW6692(cs, W_IMASK, 0xff);
cs->writeW6692(cs, W_D_SAM, 0xff);
cs->writeW6692(cs, W_D_TAM, 0xff);
cs->writeW6692(cs, W_D_EXIM, 0x00);
cs->writeW6692(cs, W_D_MODE, W_D_MODE_RACT);
cs->writeW6692(cs, W_IMASK, 0x18);
if (cs->subtyp == W6692_USR) {
/* seems that USR implemented some power control features
* Pin 79 is connected to the oscilator circuit so we
* have to handle it here
*/
cs->writeW6692(cs, W_PCTL, 0x80);
cs->writeW6692(cs, W_XDATA, 0x00);
}
}
static void initW6692(struct IsdnCardState *cs, int part)
{
if (part & 1) {
cs->setstack_d = setstack_W6692;
cs->DC_Close = DC_Close_W6692;
cs->dbusytimer.function = (void *) dbusy_timer_handler;
cs->dbusytimer.data = (long) cs;
init_timer(&cs->dbusytimer);
resetW6692(cs);
ph_command(cs, W_L1CMD_RST);
cs->dc.w6692.ph_state = W_L1CMD_RST;
W6692_new_ph(cs);
ph_command(cs, W_L1CMD_ECK);
cs->bcs[0].BC_SetStack = setstack_w6692;
cs->bcs[1].BC_SetStack = setstack_w6692;
cs->bcs[0].BC_Close = close_w6692state;
cs->bcs[1].BC_Close = close_w6692state;
W6692Bmode(cs->bcs, 0, 0);
W6692Bmode(cs->bcs + 1, 0, 0);
}
if (part & 2) {
/* Reenable all IRQ */
cs->writeW6692(cs, W_IMASK, 0x18);
cs->writeW6692(cs, W_D_EXIM, 0x00);
cs->BC_Write_Reg(cs, 0, W_B_EXIM, 0x00);
cs->BC_Write_Reg(cs, 1, W_B_EXIM, 0x00);
/* Reset D-chan receiver and transmitter */
cs->writeW6692(cs, W_D_CMDR, W_D_CMDR_RRST | W_D_CMDR_XRST);
}
}
/* Interface functions */
static u_char
ReadW6692(struct IsdnCardState *cs, u_char offset)
{
return (inb(cs->hw.w6692.iobase + offset));
}
static void
WriteW6692(struct IsdnCardState *cs, u_char offset, u_char value)
{
outb(value, cs->hw.w6692.iobase + offset);
}
static void
ReadISACfifo(struct IsdnCardState *cs, u_char *data, int size)
{
insb(cs->hw.w6692.iobase + W_D_RFIFO, data, size);
}
static void
WriteISACfifo(struct IsdnCardState *cs, u_char *data, int size)
{
outsb(cs->hw.w6692.iobase + W_D_XFIFO, data, size);
}
static u_char
ReadW6692B(struct IsdnCardState *cs, int bchan, u_char offset)
{
return (inb(cs->hw.w6692.iobase + (bchan ? 0x40 : 0) + offset));
}
static void
WriteW6692B(struct IsdnCardState *cs, int bchan, u_char offset, u_char value)
{
outb(value, cs->hw.w6692.iobase + (bchan ? 0x40 : 0) + offset);
}
static int
w6692_card_msg(struct IsdnCardState *cs, int mt, void *arg)
{
switch (mt) {
case CARD_RESET:
resetW6692(cs);
return (0);
case CARD_RELEASE:
cs->writeW6692(cs, W_IMASK, 0xff);
release_region(cs->hw.w6692.iobase, 256);
if (cs->subtyp == W6692_USR) {
cs->writeW6692(cs, W_XDATA, 0x04);
}
return (0);
case CARD_INIT:
initW6692(cs, 3);
return (0);
case CARD_TEST:
return (0);
}
return (0);
}
static int id_idx;
static struct pci_dev *dev_w6692 = NULL;
int setup_w6692(struct IsdnCard *card)
{
struct IsdnCardState *cs = card->cs;
char tmp[64];
u_char found = 0;