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
|
/*
* XFree86 int10 module
* execute BIOS int 10h calls in x86 real mode environment
* Copyright 1999 Egbert Eich
*/
#ifdef HAVE_XORG_CONFIG_H
#include <xorg-config.h>
#endif
#include "xf86.h"
#include "compiler.h"
#define _INT10_PRIVATE
#include "xf86int10.h"
#include "int10Defines.h"
#include "Pci.h"
#define REG pInt
xf86Int10InfoPtr Int10Current = NULL;
static int int1A_handler(xf86Int10InfoPtr pInt);
#ifndef _PC
static int int42_handler(xf86Int10InfoPtr pInt);
#endif
static int intE6_handler(xf86Int10InfoPtr pInt);
static struct pci_device *findPci(xf86Int10InfoPtr pInt, unsigned short bx);
static CARD32 pciSlotBX(const struct pci_device *pvp);
int
int_handler(xf86Int10InfoPtr pInt)
{
int num = pInt->num;
int ret = 0;
switch (num) {
#ifndef _PC
case 0x10:
case 0x42:
case 0x6D:
if (getIntVect(pInt, num) == I_S_DEFAULT_INT_VECT)
ret = int42_handler(pInt);
break;
#endif
case 0x1A:
ret = int1A_handler(pInt);
break;
case 0xe6:
ret = intE6_handler(pInt);
break;
default:
break;
}
if (!ret)
ret = run_bios_int(num, pInt);
if (!ret) {
xf86DrvMsg(pInt->pScrn->scrnIndex, X_ERROR, "Halting on int 0x%2.2x!\n", num);
dump_registers(pInt);
stack_trace(pInt);
}
return ret;
}
#ifndef _PC
/*
* This is derived from a number of PC system BIOS'es. The intent here is to
* provide very primitive video support, before an EGA/VGA BIOS installs its
* own interrupt vector. Here, "Ignored" calls should remain so. "Not
* Implemented" denotes functionality that can be implemented should the need
* arise. What are "Not Implemented" throughout are video memory accesses.
* Also, very little input validity checking is done here.
*/
static int
int42_handler(xf86Int10InfoPtr pInt)
{
switch (X86_AH) {
case 0x00:
/* Set Video Mode */
/* Enter: AL = video mode number */
/* Leave: Nothing */
/* Implemented (except for clearing the screen) */
{ /* Localise */
unsigned int ioport;
int i;
CARD16 int1d, regvals, tmp;
CARD8 mode, cgamode, cgacolour;
/*
* Ignore all mode numbers but 0x00-0x13. Some systems also ignore
* 0x0B and 0x0C, but don't do that here.
*/
if (X86_AL > 0x13)
break;
/*
* You didn't think that was really the mode set, did you? There
* are only so many slots in the video parameter table...
*/
mode = X86_AL;
ioport = 0x03D4;
switch (MEM_RB(pInt, 0x0410) & 0x30) {
case 0x30: /* MDA */
mode = 0x07; /* Force mode to 0x07 */
ioport = 0x03B4;
break;
case 0x10: /* CGA 40x25 */
if (mode >= 0x07)
mode = 0x01;
break;
case 0x20: /* CGA 80x25 (MCGA?) */
if (mode >= 0x07)
mode = 0x03;
break;
case 0x00: /* EGA/VGA */
if (mode >= 0x07) /* Don't try MDA timings */
mode = 0x01; /* !?!?! */
break;
}
/* Locate data in video parameter table */
int1d = MEM_RW(pInt, 0x1d << 2);
regvals = ((mode >> 1) << 4) + int1d;
cgacolour = 0x30;
if (mode == 0x06) {
regvals -= 0x10;
cgacolour = 0x3F;
}
/** Update BIOS Data Area **/
/* Video mode */
MEM_WB(pInt, 0x0449, mode);
/* Columns */
tmp = MEM_RB(pInt, mode + int1d + 0x48);
MEM_WW(pInt, 0x044A, tmp);
/* Page length */
tmp = MEM_RW(pInt, (mode & 0x06) + int1d + 0x40);
MEM_WW(pInt, 0x044C, tmp);
/* Start Address */
MEM_WW(pInt, 0x044E, 0);
/* Cursor positions, one for each display page */
for (i = 0x0450; i < 0x0460; i += 2)
MEM_WW(pInt, i, 0);
/* Cursor start & end scanlines */
tmp = MEM_RB(pInt, regvals + 0x0B);
MEM_WB(pInt, 0x0460, tmp);
tmp = MEM_RB(pInt, regvals + 0x0A);
MEM_WB(pInt, 0x0461, tmp);
/* Current display page number */
MEM_WB(pInt, 0x0462, 0);
/* CRTC I/O address */
MEM_WW(pInt, 0x0463, ioport);
/* CGA Mode register value */
cgamode = MEM_RB(pInt, mode + int1d + 0x50);
MEM_WB(pInt, 0x0465, cgamode);
/* CGA Colour register value */
MEM_WB(pInt, 0x0466, cgacolour);
/* Rows */
MEM_WB(pInt, 0x0484, (25 - 1));
/* Program the mode */
pci_io_write8(pInt->io, ioport + 4, cgamode & 0x37); /* Turn off screen */
for (i = 0; i < 0x10; i++) {
tmp = MEM_RB(pInt, regvals + i);
pci_io_write8(pInt->io, ioport, i);
pci_io_write8(pInt->io, ioport + 1, tmp);
}
pci_io_write8(pInt->io, ioport + 5, cgacolour); /* Select colour mode */
pci_io_write8(pInt->io, ioport + 4, cgamode); /* Turn on screen */
}
break;
case 0x01:
/* Set Cursor Type */
/* Enter: CH = starting line for cursor */
/* CL = ending line for cursor */
/* Leave: Nothing */
/* Implemented */
{ /* Localise */
unsigned int ioport = MEM_RW(pInt, 0x0463);
MEM_WB(pInt, 0x0460, X86_CL);
MEM_WB(pInt, 0x0461, X86_CH);
pci_io_write8(pInt->io, ioport, 0x0A);
pci_io_write8(pInt->io, ioport + 1, X86_CH);
pci_io_write8(pInt->io, ioport, 0x0B);
pci_io_write8(pInt->io, ioport + 1, X86_CL);
}
break;
case 0x02:
/* Set Cursor Position */
/* Enter: BH = display page number */
/* DH = row */
/* DL = column */
/* Leave: Nothing */
/* Implemented */
{ /* Localise */
unsigned int ioport;
CARD16 offset;
MEM_WB(pInt, (X86_BH << 1) + 0x0450, X86_DL);
MEM_WB(pInt, (X86_BH << 1) + 0x0451, X86_DH);
if (X86_BH != MEM_RB(pInt, 0x0462))
break;
offset = (X86_DH * MEM_RW(pInt, 0x044A)) + X86_DL;
offset += MEM_RW(pInt, 0x044E) << 1;
ioport = MEM_RW(pInt, 0x0463);
pci_io_write8(pInt->io, ioport, 0x0E);
pci_io_write8(pInt->io, ioport + 1, offset >> 8);
pci_io_write8(pInt->io, ioport, 0x0F);
pci_io_write8(pInt->io, ioport + 1, offset & 0xFF);
}
break;
case 0x03:
/* Get Cursor Position */
/* Enter: BH = display page number */
/* Leave: CH = starting line for cursor */
/* CL = ending line for cursor */
/* DH = row */
/* DL = column */
/* Implemented */
{ /* Localise */
X86_CL = MEM_RB(pInt, 0x0460);
X86_CH = MEM_RB(pInt, 0x0461);
X86_DL = MEM_RB(pInt, (X86_BH << 1) + 0x0450);
X86_DH = MEM_RB(pInt, (X86_BH << 1) + 0x0451);
}
break;
case 0x04:
/* Get Light Pen Position */
/* Enter: Nothing */
/* Leave: AH = 0x01 (down/triggered) or 0x00 (not) */
/* BX = pixel column */
/* CX = pixel row */
/* DH = character row */
/* DL = character column */
/* Not Implemented */
{ /* Localise */
xf86DrvMsgVerb(pInt->pScrn->scrnIndex, X_NOT_IMPLEMENTED, 2,
"int 0x%2.2x(AH=0x04) -- Get Light Pen Position\n",
pInt->num);
if (xf86GetVerbosity() > 3) {
dump_registers(pInt);
stack_trace(pInt);
}
X86_AH = X86_BX = X86_CX = X86_DX = 0;
}
break;
case 0x05:
/* Set Display Page */
/* Enter: AL = display page number */
/* Leave: Nothing */
/* Implemented */
{ /* Localise */
unsigned int ioport = MEM_RW(pInt, 0x0463);
CARD16 start;
CARD8 x, y;
/* Calculate new start address */
MEM_WB(pInt, 0x0462, X86_AL);
start = X86_AL * MEM_RW(pInt, 0x044C);
MEM_WW(pInt, 0x044E, start);
start <<= 1;
/* Update start address */
pci_io_write8(pInt->io, ioport, 0x0C);
pci_io_write8(pInt->io, ioport + 1, start >> 8);
pci_io_write8(pInt->io, ioport, 0x0D);
pci_io_write8(pInt->io, ioport + 1, start & 0xFF);
/* Switch cursor position */
y = MEM_RB(pInt, (X86_AL << 1) + 0x0450);
x = MEM_RB(pInt, (X86_AL << 1) + 0x0451);
start += (y * MEM_RW(pInt, 0x044A)) + x;
/* Update cursor position */
pci_io_write8(pInt->io, ioport, 0x0E);
pci_io_write8(pInt->io, ioport + 1, start >> 8);
pci_io_write8(pInt->io, ioport, 0x0F);
pci_io_write8(pInt->io, ioport + 1, start & 0xFF);
}
break;
case 0x06:
/* Initialise or Scroll Window Up */
/* Enter: AL = lines to scroll up */
/* BH = attribute for blank */
/* CH = upper y of window */
/* CL = left x of window */
/* DH = lower y of window */
/* DL = right x of window */
/* Leave: Nothing */
/* Not Implemented */
{ /* Localise */
xf86DrvMsgVerb(pInt->pScrn->scrnIndex, X_NOT_IMPLEMENTED, 2,
"int 0x%2.2x(AH=0x06) -- Initialise or Scroll Window Up\n",
pInt->num);
xf86DrvMsgVerb(pInt->pScrn->scrnIndex, X_NOT_IMPLEMENTED, 3,
" AL=0x%2.2x, BH=0x%2.2x,"
" CH=0x%2.2x, CL=0x%2.2x, DH=0x%2.2x, DL=0x%2.2x\n",
X86_AL, X86_BH, X86_CH, X86_CL, X86_DH, X86_DL);
if (xf86GetVerbosity() > 3) {
dump_registers(pInt);
stack_trace(pInt);
}
}
break;
case 0x07:
/* Initialise or Scroll Window Down */
/* Enter: AL = lines to scroll down */
/* BH = attribute for blank */
/* CH = upper y of window */
/* CL = left x of window */
/* DH = lower y of window */
/* DL = right x of window */
/* Leave: Nothing */
/* Not Implemented */
{ /* Localise */
xf86DrvMsgVerb(pInt->pScrn->scrnIndex, X_NOT_IMPLEMENTED, 2,
"int 0x%2.2x(AH=0x07) -- Initialise or Scroll Window Down\n",
pInt->num);
xf86DrvMsgVerb(pInt->pScrn->scrnIndex, X_NOT_IMPLEMENTED, 3,
" AL=0x%2.2x, BH=0x%2.2x,"
" CH=0x%2.2x, CL=0x%2.2x, DH=0x%2.2x, DL=0x%2.2x\n",
X86_AL, X86_BH, X86_CH, X86_CL, X86_DH, X86_DL);
if (xf86GetVerbosity() > 3) {
dump_registers(pInt);
stack_trace(pInt);
}
}
break;
case 0x08:
/* Read Character and Attribute at Cursor */
/* Enter: BH = display page number */
/* Leave: AH = attribute */
/* AL = character */
/* Not Implemented */
{ /* Localise */
xf86DrvMsgVerb(pInt->pScrn->scrnIndex, X_NOT_IMPLEMENTED, 2,
"int 0x%2.2x(AH=0x08) -- Read Character and Attribute at"
" Cursor\n", pInt->num);
xf86DrvMsgVerb(pInt->pScrn->scrnIndex, X_NOT_IMPLEMENTED, 3,
"BH=0x%2.2x\n", X86_BH);
if (xf86GetVerbosity() > 3) {
dump_registers(pInt);
stack_trace(pInt);
}
X86_AX = 0;
}
break;
case 0x09:
/* Write Character and Attribute at Cursor */
/* Enter: AL = character */
/* BH = display page number */
/* BL = attribute (text) or colour (graphics) */
/* CX = replication count */
/* Leave: Nothing */
/* Not Implemented */
{ /* Localise */
xf86DrvMsgVerb(pInt->pScrn->scrnIndex, X_NOT_IMPLEMENTED, 2,
"int 0x%2.2x(AH=0x09) -- Write Character and Attribute at"
" Cursor\n", pInt->num);
xf86DrvMsgVerb(pInt->pScrn->scrnIndex, X_NOT_IMPLEMENTED, 3,
"AL=0x%2.2x, BH=0x%2.2x, BL=0x%2.2x, CX=0x%4.4x\n",
X86_AL, X86_BH, X86_BL, X86_CX);
if (xf86GetVerbosity() > 3) {
dump_registers(pInt);
stack_trace(pInt);
}
}
break;
case 0x0a:
/* Write Character at Cursor */
/* Enter: AL = character */
/* BH = display page number */
/* BL = colour */
/* CX = replication count */
/* Leave: Nothing */
/* Not Implemented */
{ /* Localise */
xf86DrvMsgVerb(pInt->pScrn->scrnIndex, X_NOT_IMPLEMENTED, 2,
"int 0x%2.2x(AH=0x0A) -- Write Character at Cursor\n",
pInt->num);
xf86DrvMsgVerb(pInt->pScrn->scrnIndex, X_NOT_IMPLEMENTED, 3,
"AL=0x%2.2x, BH=0x%2.2x, BL=0x%2.2x, CX=0x%4.4x\n",
X86_AL, X86_BH, X86_BL, X86_CX);
if (xf86GetVerbosity() > 3) {
dump_registers(pInt);
stack_trace(pInt);
}
}
break;
case 0x0b:
/* Set Palette, Background or Border */
/* Enter: BH = 0x00 or 0x01 */
/* BL = colour or palette (respectively) */
/* Leave: Nothing */
/* Implemented */
{ /* Localise */
unsigned int ioport = MEM_RW(pInt, 0x0463) + 5;
CARD8 cgacolour = MEM_RB(pInt, 0x0466);
if (X86_BH) {
cgacolour &= 0xDF;
cgacolour |= (X86_BL & 0x01) << 5;
}
else {
cgacolour &= 0xE0;
cgacolour |= X86_BL & 0x1F;
}
MEM_WB(pInt, 0x0466, cgacolour);
pci_io_write8(pInt->io, ioport, cgacolour);
}
break;
case 0x0c:
/* Write Graphics Pixel */
/* Enter: AL = pixel value */
/* BH = display page number */
/* CX = column */
/* DX = row */
/* Leave: Nothing */
/* Not Implemented */
{ /* Localise */
xf86DrvMsgVerb(pInt->pScrn->scrnIndex, X_NOT_IMPLEMENTED, 2,
"int 0x%2.2x(AH=0x0C) -- Write Graphics Pixel\n",
pInt->num);
xf86DrvMsgVerb(pInt->pScrn->scrnIndex, X_NOT_IMPLEMENTED, 3,
"AL=0x%2.2x, BH=0x%2.2x, CX=0x%4.4x, DX=0x%4.4x\n",
X86_AL, X86_BH, X86_CX, X86_DX);
if (xf86GetVerbosity() > 3) {
dump_registers(pInt);
stack_trace(pInt);
}
}
break;
case 0x0d:
/* Read Graphics Pixel */
/* Enter: BH = display page number */
/* CX = column */
/* DX = row */
/* Leave: AL = pixel value */
/* Not Implemented */
{ /* Localise */
xf86DrvMsgVerb(pInt->pScrn->scrnIndex, X_NOT_IMPLEMENTED, 2,
"int 0x%2.2x(AH=0x0D) -- Read Graphics Pixel\n",
pInt->num);
xf86DrvMsgVerb(pInt->pScrn->scrnIndex, X_NOT_IMPLEMENTED, 3,
"BH=0x%2.2x, CX=0x%4.4x, DX=0x%4.4x\n", X86_BH, X86_CX,
X86_DX);
if (xf86GetVerbosity() > 3) {
dump_registers(pInt);
stack_trace(pInt);
}
X86_AL = 0;
}
break;
case 0x0e:
/* Write Character in Teletype Mode */
/* Enter: AL = character */
/* BH = display page number */
/* BL = foreground colour */
/* Leave: Nothing */
/* Not Implemented */
/* WARNING: Emulation of BEL characters will require */
/* emulation of RTC and PC speaker I/O. */
/* Also, this recurses through int 0x10 */
/* which might or might not have been */
/* installed yet. */
{ /* Localise */
xf86DrvMsgVerb(pInt->pScrn->scrnIndex, X_NOT_IMPLEMENTED, 2,
"int 0x%2.2x(AH=0x0E) -- Write Character in Teletype Mode\n",
pInt->num);
xf86DrvMsgVerb(pInt->pScrn->scrnIndex, X_NOT_IMPLEMENTED, 3,
"AL=0x%2.2x, BH=0x%2.2x, BL=0x%2.2x\n",
X86_AL, X86_BH, X86_BL);
if (xf86GetVerbosity() > 3) {
dump_registers(pInt);
stack_trace(pInt);
}
}
break;
case 0x0f:
/* Get Video Mode */
/* Enter: Nothing */
/* Leave: AH = number of columns */
/* AL = video mode number */
/* BH = display page number */
/* Implemented */
{ /* Localise */
X86_AH = MEM_RW(pInt, 0x044A);
X86_AL = MEM_RB(pInt, 0x0449);
X86_BH = MEM_RB(pInt, 0x0462);
}
break;
case 0x10:
/* Colour Control (subfunction in AL) */
/* Enter: Various */
/* Leave: Various */
/* Ignored */
break;
case 0x11:
/* Font Control (subfunction in AL) */
/* Enter: Various */
/* Leave: Various */
/* Ignored */
break;
case 0x12:
/* Miscellaneous (subfunction in BL) */
/* Enter: Various */
/* Leave: Various */
/* Ignored. Previous code here optionally allowed */
/* the enabling and disabling of VGA, but no system */
/* BIOS I've come across actually implements it. */
break;
case 0x13:
/* Write String in Teletype Mode */
/* Enter: AL = write mode */
/* BL = attribute (if (AL & 0x02) == 0) */
/* CX = string length */
/* DH = row */
/* DL = column */
/* ES:BP = string segment:offset */
/* Leave: Nothing */
/* Not Implemented */
/* WARNING: Emulation of BEL characters will require */
/* emulation of RTC and PC speaker I/O. */
/* Also, this recurses through int 0x10 */
/* which might or might not have been */
/* installed yet. */
{ /* Localise */
xf86DrvMsgVerb(pInt->pScrn->scrnIndex, X_NOT_IMPLEMENTED, 2,
"int 0x%2.2x(AH=0x13) -- Write String in Teletype Mode\n",
pInt->num);
xf86DrvMsgVerb(pInt->pScrn->scrnIndex, X_NOT_IMPLEMENTED, 3,
"AL=0x%2.2x, BL=0x%2.2x, CX=0x%4.4x,"
" DH=0x%2.2x, DL=0x%2.2x, ES:BP=0x%4.4x:0x%4.4x\n",
X86_AL, X86_BL, X86_CX, X86_DH, X86_DL, X86_ES, X86_BP);
if (xf86GetVerbosity() > 3) {
dump_registers(pInt);
stack_trace(pInt);
}
}
break;
default:
/* Various extensions */
/* Enter: Various */
/* Leave: Various */
/* Ignored */
break;
}
return 1;
}
#endif
#define SUCCESSFUL 0x00
#define DEVICE_NOT_FOUND 0x86
#define BAD_REGISTER_NUMBER 0x87
#ifdef SHOW_ALL_DEVICES
/**
* These functions are meant to be used by the PCI BIOS emulation. Some
* BIOSes need to see if there are \b other chips of the same type around so
* by setting \c exclude one PCI device can be explicitely excluded, if
* required.
*/
static struct pci_device *
do_find(const struct pci_id_match *m, char n, const struct pci_device *exclude)
{
struct pci_device *dev;
struct pci_device_iterator *iter;
n++;
iter = pci_id_match_iterator_create(m);
while ((dev = pci_device_next(iter)) != NULL) {
if ((dev != exclude) && !(--n)) {
break;
}
}
pci_iterator_destroy(iter);
return dev;
}
static struct pci_device *
find_pci_device_vendor(CARD16 vendorID, CARD16 deviceID,
char n, const struct pci_device *exclude)
{
struct pci_id_match m;
m.vendor_id = vendorID;
m.device_id = deviceID;
m.subvendor_id = PCI_MATCH_ANY;
m.subdevice_id = PCI_MATCH_ANY;
m.device_class = 0;
m.device_class_mask = 0;
return do_find(&m, n, exclude);
}
static struct pci_device *
find_pci_class(CARD8 intf, CARD8 subClass, CARD16 _class,
char n, const struct pci_device *exclude)
{
struct pci_id_match m;
m.vendor_id = PCI_MATCH_ANY;
m.device_id = PCI_MATCH_ANY;
m.subvendor_id = PCI_MATCH_ANY;
m.subdevice_id = PCI_MATCH_ANY;
m.device_class = (((uint32_t) _class) << 16)
| (((uint32_t) subClass) << 8) | intf;
m.device_class_mask = 0x00ffffff;
return do_find(&m, n, exclude);
}
#endif
/*
* Return the last bus number in the same domain as dev. Only look at the
* one domain since this is going into %cl, and VGA I/O is per-domain anyway.
*/
static int
int1A_last_bus_number(struct pci_device *dev)
{
struct pci_device *d;
struct pci_slot_match m = { dev->domain,
PCI_MATCH_ANY,
PCI_MATCH_ANY,
PCI_MATCH_ANY
};
struct pci_device_iterator *iter;
int i = 0;
iter = pci_slot_match_iterator_create(&m);
while ((d = pci_device_next(iter)))
if (d->bus > i)
i = d->bus;
pci_iterator_destroy(iter);
return i;
}
static int
int1A_handler(xf86Int10InfoPtr pInt)
{
struct pci_device *const pvp = xf86GetPciInfoForEntity(pInt->entityIndex);
struct pci_device *dev;
if (pvp == NULL)
return 0; /* oops */
#ifdef PRINT_INT
ErrorF("int 0x1a: ax=0x%x bx=0x%x cx=0x%x dx=0x%x di=0x%x es=0x%x\n",
X86_EAX, X86_EBX, X86_ECX, X86_EDX, X86_EDI, X86_ESI);
#endif
switch (X86_AX) {
case 0xb101:
X86_EAX &= 0xFF00; /* no config space/special cycle support */
X86_EDX = 0x20494350; /* " ICP" */
X86_EBX = 0x0210; /* Version 2.10 */
X86_ECX &= 0xFF00;
X86_ECX |= int1A_last_bus_number(pvp);
X86_EFLAGS &= ~((unsigned long) 0x01); /* clear carry flag */
#ifdef PRINT_INT
ErrorF("ax=0x%x dx=0x%x bx=0x%x cx=0x%x flags=0x%x\n",
X86_EAX, X86_EDX, X86_EBX, X86_ECX, X86_EFLAGS);
#endif
return 1;
case 0xb102:
if ((X86_DX == pvp->vendor_id)
&& (X86_CX == pvp->device_id)
&& (X86_ESI == 0)) {
X86_EAX = X86_AL | (SUCCESSFUL << 8);
X86_EFLAGS &= ~((unsigned long) 0x01); /* clear carry flag */
X86_EBX = pciSlotBX(pvp);
}
#ifdef SHOW_ALL_DEVICES
else if ((dev = find_pci_device_vendor(X86_EDX, X86_ECX, X86_ESI, pvp))) {
X86_EAX = X86_AL | (SUCCESSFUL << 8);
X86_EFLAGS &= ~((unsigned long) 0x01); /* clear carry flag */
X86_EBX = pciSlotBX(dev);
}
#endif
else {
X86_EAX = X86_AL | (DEVICE_NOT_FOUND << 8);
X86_EFLAGS |= ((unsigned long) 0x01); /* set carry flag */
}
#ifdef PRINT_INT
ErrorF("ax=0x%x bx=0x%x flags=0x%x\n", X86_EAX, X86_EBX, X86_EFLAGS);
#endif
return 1;
case 0xb103:
if ((X86_ECX & 0x00FFFFFF) == pvp->device_class) {
X86_EAX = X86_AL | (SUCCESSFUL << 8);
X86_EBX = pciSlotBX(pvp);
X86_EFLAGS &= ~((unsigned long) 0x01); /* clear carry flag */
}
#ifdef SHOW_ALL_DEVICES
else if ((dev = find_pci_class(X86_CL, X86_CH,
(X86_ECX & 0xffff0000) >> 16,
X86_ESI, pvp))) {
X86_EAX = X86_AL | (SUCCESSFUL << 8);
X86_EFLAGS &= ~((unsigned long) 0x01); /* clear carry flag */
X86_EBX = pciSlotBX(dev);
}
#endif
else {
X86_EAX = X86_AL | (DEVICE_NOT_FOUND << 8);
X86_EFLAGS |= ((unsigned long) 0x01); /* set carry flag */
}
#ifdef PRINT_INT
ErrorF("ax=0x%x flags=0x%x\n", X86_EAX, X86_EFLAGS);
#endif
return 1;
case 0xb108:
if ((dev = findPci(pInt, X86_EBX)) != NULL) {
pci_device_cfg_read_u8(dev, &X86_CL, X86_DI);
X86_EAX = X86_AL | (SUCCESSFUL << 8);
X86_EFLAGS &= ~((unsigned long) 0x01); /* clear carry flag */
}
else {
X86_EAX = X86_AL | (BAD_REGISTER_NUMBER << 8);
X86_EFLAGS |= ((unsigned long) 0x01); /* set carry flag */
}
#ifdef PRINT_INT
ErrorF("ax=0x%x cx=0x%x flags=0x%x\n", X86_EAX, X86_ECX, X86_EFLAGS);
#endif
return 1;
case 0xb109:
if ((dev = findPci(pInt, X86_EBX)) != NULL) {
pci_device_cfg_read_u16(dev, &X86_CX, X86_DI);
X86_EAX = X86_AL | (SUCCESSFUL << 8);
X86_EFLAGS &= ~((unsigned long) 0x01); /* clear carry flag */
}
else {
X86_EAX = X86_AL | (BAD_REGISTER_NUMBER << 8);
X86_EFLAGS |= ((unsigned long) 0x01); /* set carry flag */
}
#ifdef PRINT_INT
ErrorF("ax=0x%x cx=0x%x flags=0x%x\n", X86_EAX, X86_ECX, X86_EFLAGS);
#endif
return 1;
case 0xb10a:
if ((dev = findPci(pInt, X86_EBX)) != NULL) {
pci_device_cfg_read_u32(dev, &X86_ECX, X86_DI);
X86_EAX = X86_AL | (SUCCESSFUL << 8);
X86_EFLAGS &= ~((unsigned long) 0x01); /* clear carry flag */
}
else {
X86_EAX = X86_AL | (BAD_REGISTER_NUMBER << 8);
X86_EFLAGS |= ((unsigned long) 0x01); /* set carry flag */
}
#ifdef PRINT_INT
ErrorF("ax=0x%x cx=0x%x flags=0x%x\n", X86_EAX, X86_ECX, X86_EFLAGS);
#endif
return 1;
case 0xb10b:
if ((dev = findPci(pInt, X86_EBX)) != NULL) {
pci_device_cfg_write_u8(dev, X86_CL, X86_DI);
X86_EAX = X86_AL | (SUCCESSFUL << 8);
X86_EFLAGS &= ~((unsigned long) 0x01); /* clear carry flag */
}
else {
X86_EAX = X86_AL | (BAD_REGISTER_NUMBER << 8);
X86_EFLAGS |= ((unsigned long) 0x01); /* set carry flag */
}
#ifdef PRINT_INT
ErrorF("ax=0x%x flags=0x%x\n", X86_EAX, X86_EFLAGS);
#endif
return 1;
case 0xb10c:
if ((dev = findPci(pInt, X86_EBX)) != NULL) {
pci_device_cfg_write_u16(dev, X86_CX, X86_DI);
X86_EAX = X86_AL | (SUCCESSFUL << 8);
X86_EFLAGS &= ~((unsigned long) 0x01); /* clear carry flag */
}
else {
X86_EAX = X86_AL | (BAD_REGISTER_NUMBER << 8);
X86_EFLAGS |= ((unsigned long) 0x01); /* set carry flag */
}
#ifdef PRINT_INT
ErrorF("ax=0x%x flags=0x%x\n", X86_EAX, X86_EFLAGS);
#endif
return 1;
case 0xb10d:
if ((dev = findPci(pInt, X86_EBX)) != NULL) {
pci_device_cfg_write_u32(dev, X86_ECX, X86_DI);
X86_EAX = X86_AL | (SUCCESSFUL << 8);
X86_EFLAGS &= ~((unsigned long) 0x01); /* clear carry flag */
}
else {
X86_EAX = X86_AL | (BAD_REGISTER_NUMBER << 8);
X86_EFLAGS |= ((unsigned long) 0x01); /* set carry flag */
}
#ifdef PRINT_INT
ErrorF("ax=0x%x flags=0x%x\n", X86_EAX, X86_EFLAGS);
#endif
return 1;
default:
xf86DrvMsgVerb(pInt->pScrn->scrnIndex, X_NOT_IMPLEMENTED, 2,
"int 0x1a subfunction\n");
dump_registers(pInt);
if (xf86GetVerbosity() > 3)
stack_trace(pInt);
return 0;
}
}
static struct pci_device *
findPci(xf86Int10InfoPtr pInt, unsigned short bx)
{
const unsigned bus = (bx >> 8) & 0x00FF;
const unsigned dev = (bx >> 3) & 0x001F;
const unsigned func = (bx) & 0x0007;
return pci_device_find_by_slot(pInt->dev->domain, bus, dev, func);
}
static CARD32
pciSlotBX(const struct pci_device *pvp)
{
return ((pvp->bus << 8) & 0x00FF00) | (pvp->dev << 3) | (pvp->func);
}
/*
* handle initialization
*/
static int
intE6_handler(xf86Int10InfoPtr pInt)
{
struct pci_device *pvp;
if ((pvp = xf86GetPciInfoForEntity(pInt->entityIndex)))
X86_AX = (pvp->bus << 8) | (pvp->dev << 3) | (pvp->func & 0x7);
pushw(pInt, X86_CS);
pushw(pInt, X86_IP);
X86_CS = pInt->BIOSseg;
X86_EIP = 0x0003;
X86_ES = 0; /* standard pc es */
return 1;
}
|
