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
|
/* asc.c - device driver for hand scanners
*
* Current version supports:
*
* - Trust AmiScan BW (GI1904 chipset)
*
* Copyright (c) 1995 Gunther Schadow. All rights reserved.
* Copyright (c) 1995 Luigi Rizzo. All rights reserved.
*
* 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.
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Gunther Schadow
* and Luigi Rizzo.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
*/
/*
* $Id: asc.c,v 1.9 1995/12/06 23:42:22 bde Exp $
*/
#include "asc.h"
#if NASC > 0
#ifdef FREEBSD_1_X
#include "param.h"
#include "systm.h"
#include "proc.h"
#include "buf.h"
#include "malloc.h"
#include "kernel.h"
#include "ioctl.h"
#include "tty.h"
#include "uio.h"
#include "syslog.h"
#include "i386/isa/isa.h"
#include "i386/isa/isa_device.h"
#include "i386/isa/ascreg.h"
#include "machine/asc_ioctl.h"
#else
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/conf.h>
#include <sys/proc.h>
#include <sys/buf.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/ioctl.h>
#include <sys/tty.h>
#include <sys/uio.h>
#include <sys/syslog.h>
#include <sys/conf.h>
#include <sys/kernel.h>
#ifdef DEVFS
#include <sys/devfsext.h>
#endif /*DEVFS*/
#include <machine/asc_ioctl.h>
#include <sys/devconf.h>
#include <i386/isa/isa.h>
#include <i386/isa/isa_device.h>
#include <i386/isa/ascreg.h>
#endif /* FREEBSD_1_X */
/***
*** CONSTANTS & DEFINES
***
***/
#define PROBE_FAIL 0
#define PROBE_SUCCESS 5 /* number of io ports... */
#define SUCCESS 0
#define FAIL -1
#define INVALID FAIL
#define DMA1_READY 0x08
#define ASCDEBUG
#ifdef ASCDEBUG
# define lprintf if(scu->flags & DEBUG) printf
#else
# define lprintf (void)
#endif
#define TIMEOUT (hz*15) /* timeout while reading a buffer - default value */
#define ASCPRI PRIBIO /* priority while reading a buffer */
/***
*** LAYOUT OF THE MINOR NUMBER
***/
#define UNIT_MASK 0xc0 /* unit asc0 .. asc3 */
#define UNIT(x) (x >> 6)
#define DBUG_MASK 0x20
#define FRMT_MASK 0x18 /* output format */
#define FRMT_RAW 0x00 /* output bits as read from scanner */
#define FRMT_GRAY 0x10 /* output graymap (not implemented yet) */
#define FRMT_PBM 0x08 /* output pbm format */
#define FRMT_PGM 0x18
/***
*** THE GEMOMETRY TABLE
***/
static const struct asc_geom {
int dpi; /* dots per inch */
int dpl; /* dots per line */
int bpl; /* bytes per line */
int g_res; /* get resolution value (ASC_STAT) */
} geomtab[] = {
{ 800, 3312, 414, ASC_RES_800},
{ 700, 2896, 362, ASC_RES_700},
{ 600, 2480, 310, ASC_RES_600},
{ 500, 1656, 258, ASC_RES_500},
{ 400, 1656, 207, ASC_RES_400},
{ 300, 1240, 155, ASC_RES_300},
{ 200, 832, 104, ASC_RES_200},
{ 100, 416, 52, ASC_RES_100},
{ INVALID, 416, 52, INVALID } /* terminator */
};
/***
*** THE TABLE OF UNITS
***/
struct _sbuf {
size_t size;
size_t rptr;
size_t wptr; /* only changed in ascintr */
size_t count;
char *base;
};
struct asc_unit {
int base; /* base address */
int dma_num; /* dma number */
char dma_byte; /* mask of byte for setting DMA value */
char int_byte; /* mask of byte for setting int value */
char cfg_byte; /* mirror of byte written to config reg (ASC_CFG). */
char cmd_byte; /* mirror of byte written to cmd port (ASC_CMD)*/
int flags;
#define ATTACHED 0x01
#define OPEN 0x02
#define READING 0x04
#define DMA_ACTIVE 0x08
#define SLEEPING 0x10
#define SEL_COLL 0x20
#define PBM_MODE 0x40
#define DEBUG 0x80
int geometry; /* resolution as geomtab index */
int linesize; /* length of one scan line (from geom.table) */
int blen; /* length of buffer in lines */
int btime; /* timeout of buffer in seconds/hz */
struct _sbuf sbuf;
long icnt; /* interrupt count XXX for debugging */
#ifdef FREEBSD_1_X
pid_t selp; /* select pointer... */
#else
struct selinfo selp;
#endif
int height; /* height, for pnm modes */
size_t bcount; /* bytes to read, for pnm modes */
#ifdef DEVFS
void *devfs_asc; /* storage for devfs tokens (handles) */
void *devfs_ascp;
void *devfs_ascd;
void *devfs_ascpd;
#endif
} unittab[NASC];
/*** I could not find a reasonable buffer size limit other than by
*** experiments. MAXPHYS is obviously too much, while DEV_BSIZE and
*** PAGE_SIZE are really too small. There must be something wrong
*** with isa_dmastart/isa_dmarangecheck HELP!!!
***/
#define MAX_BUFSIZE 0x3000
#define DEFAULT_BLEN 20
/***
*** THE PER-DRIVER RECORD FOR ISA.C
***/
int ascprobe (struct isa_device *isdp);
int ascattach(struct isa_device *isdp);
struct isa_driver ascdriver = { ascprobe, ascattach, "asc" };
#ifndef FREEBSD_1_X
static d_open_t ascopen;
static d_close_t ascclose;
static d_read_t ascread;
static d_ioctl_t ascioctl;
static d_select_t ascselect;
#define CDEV_MAJOR 71
static struct cdevsw asc_cdevsw =
{ ascopen, ascclose, ascread, nowrite, /*71*/
ascioctl, nostop, nullreset, nodevtotty, /* asc */
ascselect, nommap, NULL, "asc", NULL, -1 };
struct asc_softc {
struct isa_device *dev;
} asc_softc[NASC];
static struct kern_devconf kdc_asc[NASC] = { {
0, 0, 0, /* filled in by dev_attach */
"asc", 0, { MDDT_ISA, 0, "tty" },
isa_generic_externalize, 0, 0, ISA_EXTERNALLEN,
&kdc_isa0, /* parent */
0, /* parentdata */
DC_UNCONFIGURED, /* state */
"GI1904 Hand scanner",
DC_CLS_MISC
} };
static inline void
asc_registerdev(struct isa_device *id)
{
if(id->id_unit)
kdc_asc[id->id_unit] = kdc_asc[0];
kdc_asc[id->id_unit].kdc_unit = id->id_unit;
kdc_asc[id->id_unit].kdc_isa = id;
dev_attach(&kdc_asc[id->id_unit]);
}
#define STATIC static
#else
#define STATIC
#endif /* ! FREEBSD_1_X */
/***
*** LOCALLY USED SUBROUTINES
***
***/
/***
*** get_resolution
*** read resolution from the scanner
***/
static void
get_resolution(struct asc_unit *scu)
{
int res, i, delay;
res=0;
scu->cmd_byte = ASC_STANDBY;
outb(ASC_CMD, scu->cmd_byte);
tsleep((caddr_t)scu, ASCPRI | PCATCH, "ascres", hz/10);
for(delay= 100; (res=inb(ASC_STAT)) & ASC_RDY_FLAG; delay--)
{
i = tsleep((caddr_t)scu, ASCPRI | PCATCH, "ascres0", 1);
if ( ( i == 0 ) || ( i == EWOULDBLOCK ) )
i = SUCCESS;
else
break;
}
if (delay==0) {
lprintf("asc.get_resolution: timeout completing command\n");
return /* -1 */;
}
/* ... actual read resolution... */
res &= ASC_RES_MASK;
for (i=0; geomtab[i].dpi != INVALID; i++) {
if (geomtab[i].g_res == res) break;
}
if (geomtab[i].dpi==INVALID) {
scu->geometry= i; /* INVALID; */
lprintf("asc.get_resolution: wrong resolution\n");
} else {
lprintf("asc.get_resolution: %d dpi\n",geomtab[i].dpi);
scu->geometry = i;
}
scu->linesize = geomtab[scu->geometry].bpl;
scu->height = geomtab[scu->geometry].dpl; /* default... */
}
/***
*** buffer_allocate
*** allocate/reallocate a buffer
***/
static int
buffer_allocate(struct asc_unit *scu)
{
size_t size, size1;
size = scu->blen * scu->linesize;
lprintf("asc.buffer_allocate: need 0x%x bytes\n", size);
if ( size > MAX_BUFSIZE ) {
size1=size;
size= ( (MAX_BUFSIZE+scu->linesize-1) / scu->linesize)*scu->linesize;
lprintf("asc.buffer_allocate: 0x%x bytes are too much, try 0x%x\n",
size1, size);
/* return ENOMEM; */
}
if ( scu->sbuf.base != NULL )
if ( scu->sbuf.size == size ) {
lprintf("asc.buffer_allocate: keep old buffer\n");
return SUCCESS;
} else {
lprintf("asc.buffer_allocate: release old buffer\n");
free( scu->sbuf.base, M_DEVBUF );
}
scu->sbuf.base = (char *)malloc(size, M_DEVBUF, M_WAITOK);
if ( scu->sbuf.base == NULL ) {
lprintf("asc.buffer_allocate: "
"buffer allocatation failed for size = 0x%x\n",
scu->sbuf.size);
return ENOMEM;
}
scu->sbuf.size = size;
scu->sbuf.rptr = 0;
scu->sbuf.wptr = 0;
scu->sbuf.count = 0; /* available data for reading */
lprintf("asc.buffer_allocate: ok\n");
return SUCCESS;
}
/*** dma_restart
*** invoked locally to start dma. Must run in a critical section
***/
static void
dma_restart(struct asc_unit *scu)
{
unsigned char al=scu->cmd_byte;
isa_dmastart(B_READ, scu->sbuf.base+scu->sbuf.wptr,
scu->linesize, scu->dma_num);
/*** this is done in sub_20, after dmastart ? ***/
#if 0
outb( ASC_CMD, al |= 4 );
outb( ASC_CMD, al |= 8 ); /* ??? seems useless */
outb( ASC_CMD, al &= 0xfb );
scu->cmd_byte = al;
#else
outb( ASC_CMD, ASC_OPERATE);
#endif
scu->flags |= DMA_ACTIVE;
}
/***
*** the main functions
***/
/*** asc_reset
*** resets the scanner and the config bytes...
***/
void
asc_reset(struct asc_unit *scu)
{
scu->cfg_byte = 0 ; /* clear... */
scu->cmd_byte = 0 ; /* clear... */
outb(ASC_CFG,scu->cfg_byte); /* for safety, do this here */
outb(ASC_CMD,scu->cmd_byte); /* probably not needed */
tsleep((caddr_t)scu, ASCPRI | PCATCH, "ascres", hz/10); /* sleep .1 sec */
scu->blen = DEFAULT_BLEN;
scu->btime = TIMEOUT;
scu->height = 0 ; /* don't know better... */
}
/**************************************************************************
***
*** ascprobe
*** read status port and check for proper configuration:
*** - if address group matches (status byte has reasonable value)
*** cannot check interrupt/dma, only clear the config byte.
***/
int
ascprobe (struct isa_device *isdp)
{
int unit = isdp->id_unit;
struct asc_unit *scu = unittab + unit;
int stb;
scu->base = isdp->id_iobase; /*** needed by the following macros ***/
scu->flags = DEBUG;
if ( isdp->id_iobase < 0 ) {
lprintf("asc%d.probe: no iobase given\n", unit);
return PROBE_FAIL;
}
if ((stb=inb(ASC_PROBE)) != ASC_PROBE_VALUE) {
lprintf("asc%d.probe: failed, got 0x%02x instead of 0x%02x\n",
unit, stb, ASC_PROBE_VALUE);
return PROBE_FAIL;
}
switch(ffs(isdp->id_irq) - 1) {
case 3:
scu->int_byte = ASC_CNF_IRQ3;
break;
case 5:
scu->int_byte = ASC_CNF_IRQ5;
break;
case 10:
scu->int_byte = ASC_CNF_IRQ10;
break;
#if 0
case -1:
scu->int_byte = 0;
lprintf("asc%d.probe: warning - going interruptless\n", unit);
break;
#endif
default:
lprintf("asc%d.probe: unsupported INT %d (only 3, 5, 10)\n",
unit, isdp->id_irq);
return PROBE_FAIL;
}
scu->dma_num = isdp->id_drq;
switch(scu->dma_num) {
case 1:
scu->dma_byte = ASC_CNF_DMA1;
break;
case 3:
scu->dma_byte = ASC_CNF_DMA3;
break;
default:
lprintf("asc%d.probe: unsupported DMA %d (only 1 or 3)\n", scu->dma_num);
return PROBE_FAIL;
}
asc_reset(scu);
/* lprintf("asc%d.probe: ok\n", unit); */
scu->flags &= ~DEBUG;
scu->icnt = 0;
return PROBE_SUCCESS;
}
/**************************************************************************
***
*** ascattach
*** finish initialization of unit structure, get geometry value (?)
***/
int
ascattach(struct isa_device *isdp)
{
int unit = isdp->id_unit;
struct asc_unit *scu = unittab + unit;
#ifdef DEVFS
char name[32];
#endif
scu->flags |= DEBUG;
printf("asc%d: [GI1904/Trust Ami-Scan Grey, type S2]\n", unit);
/* initialize buffer structure */
scu->sbuf.base = NULL;
scu->sbuf.size = INVALID;
scu->sbuf.rptr = INVALID;
scu->flags |= ATTACHED;
/* lprintf("asc%d.attach: ok\n", unit); */
scu->flags &= ~DEBUG;
#ifdef FREEBSD_1_X
scu->selp = (pid_t)0;
#else
scu->selp.si_flags=0;
scu->selp.si_pid=(pid_t)0;
kdc_asc[isdp->id_unit].kdc_state = DC_BUSY; /* XXX don't know better */
asc_registerdev(isdp);
#endif
#ifdef DEVFS
#define ASC_UID 0
#define ASC_GID 13
sprintf(name,"asc%d",unit);
/* path name devsw minor type uid gid perm*/
scu->devfs_asc = devfs_add_devsw("/", name, &asc_cdevsw, unit<<6,
DV_CHR, ASC_UID, ASC_GID, 0666);
sprintf(name,"asc%dp",unit);
scu->devfs_ascp = devfs_add_devsw("/", name, &asc_cdevsw,
((unit<<6) + FRMT_PBM),
DV_CHR, ASC_UID, ASC_GID, 0666);
sprintf(name,"asc%dd",unit);
scu->devfs_ascd = devfs_add_devsw("/", name, &asc_cdevsw,
((unit<<6) + DBUG_MASK),
DV_CHR, ASC_UID, ASC_GID, 0666);
sprintf(name,"asc%dpd",unit);
scu->devfs_ascpd = devfs_add_devsw("/", name, &asc_cdevsw,
((unit<<6) + DBUG_MASK + FRMT_PBM),
DV_CHR, ASC_UID, ASC_GID, 0666);
#endif /*DEVFS*/
return 1; /* attach must not fail */
}
/**************************************************************************
***
*** ascintr
*** the interrupt routine, at the end of DMA...
***/
void
ascintr(int unit)
{
struct asc_unit *scu = unittab + unit;
int chan_bit = 0x01 << scu->dma_num;
scu->icnt++;
/* ignore stray interrupts... */
if ( scu->flags & (OPEN |READING) != (OPEN | READING) ) {
/* must be after closing... */
scu->flags &= ~(OPEN | READING | DMA_ACTIVE | SLEEPING | SEL_COLL);
return;
}
if ( (scu->flags & DMA_ACTIVE) && (inb(DMA1_READY) & chan_bit) != 0) {
outb( ASC_CMD, ASC_STANDBY);
scu->flags &= ~DMA_ACTIVE;
/* bounce buffers... */
isa_dmadone(B_READ, scu->sbuf.base+scu->sbuf.wptr,
scu->linesize, scu->dma_num);
scu->sbuf.wptr += scu->linesize;
if (scu->sbuf.wptr >= scu->sbuf.size) scu->sbuf.wptr=0;
scu->sbuf.count += scu->linesize;
if (scu->flags & SLEEPING) {
scu->flags &= ~SLEEPING;
wakeup((caddr_t)scu);
}
if (scu->sbuf.size - scu->sbuf.count >= scu->linesize) {
dma_restart(scu);
}
#ifdef FREEBSD_1_X
if (scu->selp) {
selwakeup(&scu->selp, scu->flags & SEL_COLL );
scu->selp=(pid_t)0;
scu->flags &= ~SEL_COLL;
}
#else
if (scu->selp.si_pid) {
selwakeup(&scu->selp);
scu->selp.si_pid=(pid_t)0;
scu->selp.si_flags = 0;
}
#endif
}
}
/**************************************************************************
***
*** ascopen
*** set open flag, set modes according to minor number
*** FOR RELEASE:
*** don't switch scanner on, wait until first read or ioctls go before
***/
STATIC int
ascopen(dev_t dev, int flags, int fmt, struct proc *p)
{
int unit = UNIT(minor(dev)) & UNIT_MASK;
struct asc_unit *scu = unittab + unit;
lprintf("asc%d.open: minor %d icnt %d\n", unit, minor(dev), scu->icnt);
if ( unit >= NASC || !( scu->flags & ATTACHED ) ) {
lprintf("asc%d.open: unit was not attached successfully, flags 0x%04x\n",
unit, scu->flags);
return ENXIO;
}
if ( scu->flags & OPEN ) {
lprintf("asc%d.open: already open", unit);
return EBUSY;
}
scu->flags = ATTACHED | OPEN;
if ( minor(dev) & DBUG_MASK ) scu->flags |= DEBUG;
switch(minor(dev) & FRMT_MASK) {
case FRMT_PBM:
scu->flags |= PBM_MODE;
lprintf("asc%d.open: pbm mode\n", unit);
break;
case FRMT_RAW:
lprintf("asc%d.open: raw mode\n", unit);
scu->flags &= ~PBM_MODE;
break;
default:
lprintf("asc%d.open: gray maps are not yet supported", unit);
return ENXIO;
}
asc_reset(scu);
get_resolution(scu);
return SUCCESS;
}
int
asc_startread(struct asc_unit *scu)
{
/*** from here on, things can be delayed to the first read/ioctl ***/
/*** this was done in sub_12... ***/
scu->cfg_byte= scu->cmd_byte=0; /* init scanner */
outb(ASC_CMD, scu->cmd_byte);
/*** this was done in sub_16, set scan len... ***/
outb(ASC_BOH, 0 );
scu->cmd_byte = 0x90 ;
outb(ASC_CMD, scu->cmd_byte);
outb(ASC_LEN_L, scu->linesize & 0xff /* len_low */);
outb(ASC_LEN_H, (scu->linesize >>8) & 0xff /* len_high */);
/*** this was done in sub_21, config DMA ... ***/
scu->cfg_byte |= scu->dma_byte;
outb(ASC_CFG, scu->cfg_byte);
/*** sub_22: enable int on the scanner ***/
scu->cfg_byte |= scu->int_byte;
outb(ASC_CFG, scu->cfg_byte);
/*** sub_28: light on etc...***/
scu->cmd_byte = ASC_STANDBY;
outb(ASC_CMD, scu->cmd_byte);
tsleep((caddr_t)scu, ASCPRI | PCATCH, "ascstrd", hz/10); /* sleep .1 sec */
return SUCCESS;
}
/**************************************************************************
***
*** ascclose
*** turn off scanner, release the buffer
*** should probably terminate dma ops, release int and dma. lr 12mar95
***/
STATIC int
ascclose(dev_t dev, int flags, int fmt, struct proc *p)
{
int unit = UNIT(minor(dev));
struct asc_unit *scu = unittab + unit;
lprintf("asc%d.close: minor %d\n",
unit, minor(dev));
if ( unit >= NASC || !( scu->flags & ATTACHED ) ) {
lprintf("asc%d.close: unit was not attached successfully 0x%04x\n",
unit, scu->flags);
return ENXIO;
}
/* all this is in sub_29... */
/* cli(); */
outb(ASC_CFG, 0 ); /* don't save in CFG byte!!! */
scu->cmd_byte &= ~ASC_LIGHT_ON;
outb(ASC_CMD, scu->cmd_byte);/* light off */
tsleep((caddr_t)scu, ASCPRI | PCATCH, "ascclo", hz/2); /* sleep 1/2 sec */
scu->cfg_byte &= ~ scu->dma_byte ; /* disable scanner dma */
scu->cfg_byte &= ~ scu->int_byte ; /* disable scanner int */
outb(ASC_CFG, scu->cfg_byte);
/* --- disable dma controller ? --- */
/* --- disable interrupts on the controller (sub_24) --- */
if ( scu->sbuf.base != NULL ) free( scu->sbuf.base, M_DEVBUF );
scu->sbuf.base = NULL;
scu->sbuf.size = INVALID;
scu->sbuf.rptr = INVALID;
scu->flags &= ~(DEBUG | OPEN | READING);
return SUCCESS;
}
static void
pbm_init(struct asc_unit *scu)
{
int width = geomtab[scu->geometry].dpl;
int l= sprintf(scu->sbuf.base,"P4 %d %d\n", width, scu->height);
char *p;
scu->bcount = scu->height * width / 8 + l;
/* move header to end of sbuf */
scu->sbuf.rptr=scu->sbuf.size-l;
bcopy(scu->sbuf.base, scu->sbuf.base+scu->sbuf.rptr,l);
scu->sbuf.count = l;
for(p = scu->sbuf.base + scu->sbuf.rptr; l; p++, l--)
*p = ~*p;
}
/**************************************************************************
***
*** ascread
***/
STATIC int
ascread(dev_t dev, struct uio *uio, int ioflag)
{
int unit = UNIT(minor(dev));
struct asc_unit *scu = unittab + unit;
size_t nbytes;
int sps, res;
unsigned char *p;
lprintf("asc%d.read: minor %d icnt %d\n", unit, minor(dev), scu->icnt);
if ( unit >= NASC || !( scu->flags & ATTACHED ) ) {
lprintf("asc%d.read: unit was not attached successfully 0x%04x\n",
unit, scu->flags);
return ENXIO;
}
if ( !(scu->flags & READING) ) { /*** first read... ***/
/* allocate a buffer for reading data and init things */
if ( (res = buffer_allocate(scu)) == SUCCESS ) scu->flags |= READING;
else return res;
asc_startread(scu);
if ( scu->flags & PBM_MODE ) { /* initialize for pbm mode */
pbm_init(scu);
}
}
lprintf("asc%d.read(before): "
"sz 0x%x, rptr 0x%x, wptr 0x%x, cnt 0x%x bcnt 0x%x flags 0x%x icnt %d\n",
unit, scu->sbuf.size, scu->sbuf.rptr,
scu->sbuf.wptr, scu->sbuf.count, scu->bcount,scu->flags,
scu->icnt);
sps=spltty();
if ( scu->sbuf.count == 0 ) { /* no data avail., must wait */
if (!(scu->flags & DMA_ACTIVE)) dma_restart(scu);
scu->flags |= SLEEPING;
res = tsleep((caddr_t)scu, ASCPRI | PCATCH, "ascread", 0);
scu->flags &= ~SLEEPING;
if ( res == 0 ) res = SUCCESS;
}
splx(sps); /* lower priority... */
if (scu->flags & DEBUG)
tsleep((caddr_t)scu, ASCPRI | PCATCH, "ascdly",hz);
lprintf("asc%d.read(after): "
"sz 0x%x, rptr 0x%x, wptr 0x%x, cnt 0x%x bcnt 0x%x flags 0x%x icnt %d\n",
unit, scu->sbuf.size, scu->sbuf.rptr,
scu->sbuf.wptr, scu->sbuf.count, scu->bcount,scu->flags,scu->icnt);
/* first, not more than available... */
nbytes = min( uio->uio_resid, scu->sbuf.count );
/* second, contiguous data... */
nbytes = min( nbytes, (scu->sbuf.size - scu->sbuf.rptr) );
/* third, one line (will remove this later, XXX) */
nbytes = min( nbytes, scu->linesize );
if ( (scu->flags & PBM_MODE) )
nbytes = min( nbytes, scu->bcount );
lprintf("asc%d.read: transferring 0x%x bytes\n", unit, nbytes);
lprintf("asc%d.read: invert buffer\n",unit);
for(p = scu->sbuf.base + scu->sbuf.rptr, res=nbytes; res; p++, res--)
*p = ~*p;
res = uiomove(scu->sbuf.base + scu->sbuf.rptr, nbytes, uio);
if ( res != SUCCESS ) {
lprintf("asc%d.read: uiomove failed %d", unit, res);
return res;
}
sps=spltty();
scu->sbuf.rptr += nbytes;
if (scu->sbuf.rptr >= scu->sbuf.size) scu->sbuf.rptr=0;
scu->sbuf.count -= nbytes;
/* having moved some data, can read mode */
if (!(scu->flags & DMA_ACTIVE)) dma_restart(scu);
splx(sps); /* lower priority... */
if ( scu->flags & PBM_MODE ) scu->bcount -= nbytes;
lprintf("asc%d.read: size 0x%x, pointer 0x%x, bcount 0x%x, ok\n",
unit, scu->sbuf.size, scu->sbuf.rptr, scu->bcount);
return SUCCESS;
}
/**************************************************************************
***
*** ascioctl
***/
STATIC int
ascioctl(dev_t dev, int cmd, caddr_t data, int flags, struct proc *p)
{
int unit = UNIT(minor(dev));
struct asc_unit *scu = unittab + unit;
lprintf("asc%d.ioctl: minor %d\n",
unit, minor(dev));
if ( unit >= NASC || !( scu->flags & ATTACHED ) ) {
lprintf("asc%d.ioctl: unit was not attached successfully 0x04x\n",
unit, scu->flags);
return ENXIO;
}
switch(cmd) {
case ASC_GRES:
asc_reset(scu);
get_resolution(scu);
*(int *)data=geomtab[scu->geometry].dpi;
lprintf("asc%d.ioctl:ASC_GRES %ddpi\n", unit, *(int *)data);
return SUCCESS;
case ASC_GWIDTH:
*(int *)data=geomtab[scu->geometry].dpl;
lprintf("asc%d.ioctl:ASC_GWIDTH %d\n", unit, *(int *)data);
return SUCCESS;
case ASC_GHEIGHT:
*(int *)data=scu->height;
lprintf("asc%d.ioctl:ASC_GHEIGHT %d\n", unit, *(int *)data);
return SUCCESS;
case ASC_SHEIGHT:
lprintf("asc%d.ioctl:ASC_SHEIGHT %d\n", unit, *(int *)data);
if ( scu->flags & READING ) {
lprintf("asc%d:ioctl on already reading unit\n", unit);
return EBUSY;
}
scu->height=*(int *)data;
return SUCCESS;
#if 0
case ASC_GBLEN:
*(int *)data=scu->blen;
lprintf("asc%d.ioctl:ASC_GBLEN %d\n", unit, *(int *)data);
return SUCCESS;
case ASC_SBLEN:
lprintf("asc%d.ioctl:ASC_SBLEN %d\n", unit, *(int *)data);
if (*(int *)data * geomtab[scu->geometry].dpl / 8 > MAX_BUFSIZE)
{
lprintf("asc%d:ioctl buffer size too high\n", unit);
return ENOMEM;
}
scu->blen=*(int *)data;
return SUCCESS;
case ASC_GBTIME:
*(int *)data = scu->btime / hz;
lprintf("asc%d.ioctl:ASC_GBTIME %d\n", unit, *(int *)data);
return SUCCESS;
case ASC_SBTIME:
scu->btime = *(int *)data * hz;
lprintf("asc%d.ioctl:ASC_SBTIME %d\n", unit, *(int *)data);
return SUCCESS;
#endif
default: return ENOTTY;
}
return SUCCESS;
}
STATIC int
ascselect(dev_t dev, int rw, struct proc *p)
{
int unit = UNIT(minor(dev));
struct asc_unit *scu = unittab + unit;
int sps=spltty();
struct proc *p1;
if (scu->sbuf.count >0) {
splx(sps);
return 1;
}
if (!(scu->flags & DMA_ACTIVE)) dma_restart(scu);
#ifdef FREEBSD_1_X
if (scu->selp== (pid_t)0) {
scu->selp= p->p_pid;
} else {
scu->flags |= SEL_COLL;
}
#else
if (scu->selp.si_pid && (p1=pfind(scu->selp.si_pid))
&& p1->p_wchan == (caddr_t)&selwait)
scu->selp.si_flags = SI_COLL;
else
scu->selp.si_pid = p->p_pid;
#endif
splx(sps);
return 0;
}
static asc_devsw_installed = 0;
static void
asc_drvinit(void *unused)
{
dev_t dev;
if( ! asc_devsw_installed ) {
dev = makedev(CDEV_MAJOR,0);
cdevsw_add(&dev,&asc_cdevsw,NULL);
asc_devsw_installed = 1;
}
}
SYSINIT(ascdev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR,asc_drvinit,NULL)
#endif /* NASC > 0 */
|