Device layer rollup commit.
[dragonfly.git] / sys / i386 / isa / asc.c
CommitLineData
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1/* asc.c - device driver for hand scanners
2 *
3 * Current version supports:
4 *
5 * - AmiScan (Mustek) Color and BW hand scanners (GI1904 chipset)
6 *
7 * Copyright (c) 1995 Gunther Schadow. All rights reserved.
8 * Copyright (c) 1995,1996,1997 Luigi Rizzo. All rights reserved.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. All advertising materials mentioning features or use of this software
19 * must display the following acknowledgement:
20 * This product includes software developed by Gunther Schadow
21 * and Luigi Rizzo.
22 * 4. The name of the author may not be used to endorse or promote products
23 * derived from this software without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
26 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
27 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
28 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
29 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
30 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
31 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
32 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
33 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
34 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
35 */
36/*
37 * $FreeBSD: src/sys/i386/isa/asc.c,v 1.42.2.2 2001/03/01 03:22:39 jlemon Exp $
e4c9c0c8 38 * $DragonFly: src/sys/i386/isa/Attic/asc.c,v 1.8 2004/05/19 22:52:57 dillon Exp $
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39 */
40
1f2de5d4 41#include "use_asc.h"
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42#include <sys/param.h>
43#include <sys/systm.h>
44#include <sys/conf.h>
45#include <sys/proc.h>
46#include <sys/buf.h>
47#include <sys/malloc.h>
48#include <sys/kernel.h>
49#include <sys/poll.h>
50#include <sys/select.h>
51#include <sys/uio.h>
52
53#include <machine/asc_ioctl.h>
54
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55#include <bus/isa/i386/isa.h>
56#include <bus/isa/i386/isa_device.h>
57#include "ascreg.h"
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58
59/***
60 *** CONSTANTS & DEFINES
61 ***
62 ***/
63
64#define PROBE_FAIL 0
65#define PROBE_SUCCESS IO_ASCSIZE
66#define ATTACH_FAIL 0
67#define ATTACH_SUCCESS 1
68#define SUCCESS 0
69#define FAIL -1
70#define INVALID FAIL
71
72#define DMA1_READY 0x08
73#define ASCDEBUG
74#ifdef ASCDEBUG
75# define lprintf if(scu->flags & FLAG_DEBUG) printf
76#else
77# define lprintf (void)
78#endif
79
80#define TIMEOUT (hz*15) /* timeout while reading a buffer - default value */
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81
82/***
83 *** LAYOUT OF THE MINOR NUMBER
84 ***/
85
86#define UNIT_MASK 0xc0 /* unit asc0 .. asc3 */
87#define UNIT(x) (x >> 6)
88#define DBUG_MASK 0x20
89#define FRMT_MASK 0x18 /* output format */
90#define FRMT_RAW 0x00 /* output bits as read from scanner */
91#define FRMT_GRAY 0x1 /* output gray mode for color scanner */
92#define FRMT_PBM 0x08 /* output pbm format */
93#define FRMT_PGM 0x18
94
95/***
96 *** THE GEMOMETRY TABLE
97 ***/
98
99#define GREY_LINE 826 /* 825, or 826 , or 550 ??? */
100static const struct asc_geom {
101 int dpi; /* dots per inch */
102 int dpl; /* dots per line */
103 int bpl; /* bytes per line */
104 int g_res; /* get resolution value (ASC_STAT) */
105} geomtab[] = {
106 { 800, 3312, 414, ASC_RES_800},
107 { 700, 2896, 362, ASC_RES_700},
108 { 600, 2480, 310, ASC_RES_600},
109 { 500, 1656, 258, ASC_RES_500},
110 { 400, 1656, 207, ASC_RES_400},
111 { 300, 1240, 155, ASC_RES_300},
112 { 200, 832, 104, ASC_RES_200},
113 { 100, 416, 52, ASC_RES_100},
114 { 200, 3*GREY_LINE, 3*GREY_LINE, 0 /* returned by color scanner */},
115 { 200, GREY_LINE, GREY_LINE, 0 /* color scanner, grey mode */},
116 { INVALID, 416, 52, INVALID } /* terminator */
117};
118
119/***
120 *** THE TABLE OF UNITS
121 ***/
122
123struct _sbuf {
124 size_t size;
125 size_t rptr;
126 size_t wptr; /* only changed in ascintr */
127 size_t count;
128 char *base;
129};
130
131struct asc_unit {
132 long thedev; /* XXX */
133 int base; /* base address */
134 int dma_num; /* dma number */
135 char dma_byte; /* mask of byte for setting DMA value */
136 char int_byte; /* mask of byte for setting int value */
137 char cfg_byte; /* mirror of byte written to config reg (ASC_CFG). */
138 char cmd_byte; /* mirror of byte written to cmd port (ASC_CMD)*/
139 char portf_byte;
140 int flags;
141#define ATTACHED 0x01
142#define OPEN 0x02
143#define READING 0x04
144#define DMA_ACTIVE 0x08
145#define SLEEPING 0x10
146#define SEL_COLL 0x20
147#define PBM_MODE 0x40
148#define FLAG_DEBUG 0x80
149 int geometry; /* resolution as geomtab index */
150 int linesize; /* length of one scan line (from geom.table) */
151 int blen; /* length of buffer in lines */
152 int btime; /* timeout of buffer in seconds/hz */
153 struct _sbuf sbuf;
154 long icnt; /* interrupt count XXX for debugging */
155 struct selinfo selp;
156 int height; /* height, for pnm modes */
157 size_t bcount; /* bytes to read, for pnm modes */
158};
159
160static struct asc_unit unittab[NASC];
161
162/*** I could not find a reasonable buffer size limit other than by
163 *** experiments. MAXPHYS is obviously too much, while DEV_BSIZE and
164 *** PAGE_SIZE are really too small. There must be something wrong
165 *** with isa_dmastart/isa_dmarangecheck HELP!!!
166 ***
167 *** Note, must be DEFAULT_BLEN * samples_per_line <= MAX_BUFSIZE
168 ***/
169#define MAX_BUFSIZE 0xb000 /* XXX was 0x3000 */
170#define DEFAULT_BLEN 16
171
172/***
173 *** THE PER-DRIVER RECORD FOR ISA.C
174 ***/
175static int ascprobe (struct isa_device *isdp);
176static int ascattach(struct isa_device *isdp);
177struct isa_driver ascdriver = { ascprobe, ascattach, "asc" };
178
179static ointhand2_t ascintr;
180
181static d_open_t ascopen;
182static d_close_t ascclose;
183static d_read_t ascread;
184static d_ioctl_t ascioctl;
185static d_poll_t ascpoll;
186
187#define CDEV_MAJOR 71
188
189static struct cdevsw asc_cdevsw = {
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190 /* name */ "asc",
191 /* maj */ CDEV_MAJOR,
192 /* flags */ 0,
193 /* port */ NULL,
455fcd7e 194 /* clone */ NULL,
fabb8ceb 195
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196 /* open */ ascopen,
197 /* close */ ascclose,
198 /* read */ ascread,
199 /* write */ nowrite,
200 /* ioctl */ ascioctl,
201 /* poll */ ascpoll,
202 /* mmap */ nommap,
203 /* strategy */ nostrategy,
984263bc 204 /* dump */ nodump,
fabb8ceb 205 /* psize */ nopsize
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206};
207
208#define STATIC static
209
210/***
211 *** LOCALLY USED SUBROUTINES
212 ***
213 ***/
214
215/***
216 *** get_resolution
217 *** read resolution from the scanner
218 ***/
219static void
220get_resolution(struct asc_unit *scu)
221{
222 int res, i, delay;
223
224 res=0;
225 scu->cmd_byte = ASC_STANDBY;
226 outb(ASC_CMD, scu->cmd_byte);
377d4740 227 tsleep((caddr_t)scu, PCATCH, "ascres", hz/10);
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228 for(delay= 100; (res=inb(ASC_STAT)) & ASC_RDY_FLAG; delay--)
229 {
377d4740 230 i = tsleep((caddr_t)scu, PCATCH, "ascres0", 1);
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231 if ( ( i == 0 ) || ( i == EWOULDBLOCK ) )
232 i = SUCCESS;
233 else
234 break;
235 }
236 if (delay==0) {
237 lprintf("asc.get_resolution: timeout completing command\n");
238 return /* -1 */;
239 }
240 /* ... actual read resolution... */
241 res &= ASC_RES_MASK;
242 for (i=0; geomtab[i].dpi != INVALID; i++) {
243 if (geomtab[i].g_res == res) break;
244 }
245 if (geomtab[i].dpi==INVALID) {
246 scu->geometry= i; /* INVALID; */
247 lprintf("asc.get_resolution: wrong resolution\n");
248 } else {
249 lprintf("asc.get_resolution: %d dpi\n",geomtab[i].dpi);
250 scu->geometry = i;
251 }
252 scu->portf_byte=0; /* default */
253 if (geomtab[scu->geometry].g_res==0 && !(scu->thedev&FRMT_GRAY)) {
254 /* color scanner seems to require this */
255 scu->portf_byte=2;
256 /* scu->geometry++; */
257 }
258 scu->linesize = geomtab[scu->geometry].bpl;
259 scu->height = geomtab[scu->geometry].dpl; /* default... */
260}
261
262/***
263 *** buffer_allocate
264 *** allocate/reallocate a buffer
265 *** Now just checks that the preallocated buffer is large enough.
266 ***/
267
268static int
269buffer_allocate(struct asc_unit *scu)
270{
271 size_t size, size1;
272
273 size = scu->blen * scu->linesize;
274
275 lprintf("asc.buffer_allocate: need 0x%x bytes\n", size);
276
277 if ( size > MAX_BUFSIZE ) {
278 size1=size;
279 size= ( (MAX_BUFSIZE+scu->linesize-1) / scu->linesize)*scu->linesize;
280 lprintf("asc.buffer_allocate: 0x%x bytes are too much, try 0x%x\n",
281 size1, size);
282 return ENOMEM;
283 }
284
285 scu->sbuf.size = size;
286 scu->sbuf.rptr = 0;
287 scu->sbuf.wptr = 0;
288 scu->sbuf.count = 0; /* available data for reading */
289
290 lprintf("asc.buffer_allocate: ok\n");
291
292 return SUCCESS;
293}
294
295/*** dma_restart
296 *** invoked locally to start dma. Must run in a critical section
297 ***/
298static void
299dma_restart(struct asc_unit *scu)
300{
301 unsigned char al=scu->cmd_byte;
302
303 if (geomtab[scu->geometry].g_res==0) {/* color */
304 isa_dmastart(ISADMA_READ, scu->sbuf.base+scu->sbuf.wptr,
305 scu->linesize + 90 /* XXX */ , scu->dma_num);
306 /*
307 * looks like we have to set and then clear this
308 * bit to enable the scanner to send interrupts
309 */
310 outb( ASC_CMD, al |= 4 ); /* seems to disable interrupts */
311#if 0
312 outb( ASC_CMD, al |= 8 ); /* ??? seems useless */
313#endif
314 outb( ASC_CMD, al &= 0xfb );
315 scu->cmd_byte = al;
316 } else { /* normal */
317 isa_dmastart(ISADMA_READ, scu->sbuf.base+scu->sbuf.wptr,
318 scu->linesize, scu->dma_num);
319 /*** this is done in sub_20, after dmastart ? ***/
320#if 0
321 outb( ASC_CMD, al |= 4 );
322 outb( ASC_CMD, al |= 8 ); /* ??? seems useless */
323 outb( ASC_CMD, al &= 0xfb );
324 scu->cmd_byte = al;
325#else
326 outb( ASC_CMD, ASC_OPERATE);
327#endif
328 }
329 scu->flags |= DMA_ACTIVE;
330}
331
332/***
333 *** the main functions
334 ***/
335
336/*** asc_reset
337 *** resets the scanner and the config bytes...
338 ***/
339static void
340asc_reset(struct asc_unit *scu)
341{
342 scu->cfg_byte = 0 ; /* clear... */
343 scu->cmd_byte = 0 ; /* clear... */
344
345 outb(ASC_CFG,scu->cfg_byte); /* for safety, do this here */
346 outb(ASC_CMD,scu->cmd_byte); /* probably not needed */
377d4740 347 tsleep((caddr_t)scu, PCATCH, "ascres", hz/10); /* sleep .1 sec */
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348
349 scu->blen = DEFAULT_BLEN;
350 scu->btime = TIMEOUT;
351 scu->height = 0 ; /* don't know better... */
352}
353/**************************************************************************
354 ***
355 *** ascprobe
356 *** read status port and check for proper configuration:
357 *** - if address group matches (status byte has reasonable value)
358 *** cannot check interrupt/dma, only clear the config byte.
359 ***/
360static int
361ascprobe (struct isa_device *isdp)
362{
363 int unit = isdp->id_unit;
364 struct asc_unit *scu = unittab + unit;
365 int stb;
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366
367 scu->base = isdp->id_iobase; /*** needed by the following macros ***/
368 scu->flags = FLAG_DEBUG;
369
370 if ( isdp->id_iobase < 0 ) {
371 lprintf("asc%d.probe: no iobase given\n", unit);
372 return PROBE_FAIL;
373 }
374
375 if ((stb=inb(ASC_PROBE)) != ASC_PROBE_VALUE) {
376 lprintf("asc%d.probe: failed, got 0x%02x instead of 0x%02x\n",
377 unit, stb, ASC_PROBE_VALUE);
378 return PROBE_FAIL;
379 }
380
381/*
382 * NOTE NOTE NOTE
383 * the new AmiScan Color board uses int 10,11,12 instead of 3,5,10
384 * respectively. This means that the driver must act accordingly.
385 * Unfortunately there is no easy way of telling which board one has,
386 * other than trying to get an interrupt and noticing that it is
387 * missing. use "option ASC_NEW_BOARD" if you have a new board.
388 *
389 */
390
391#if ASC_NEW_BOARD
392#define ASC_IRQ_A 10
393#define ASC_IRQ_B 11
394#define ASC_IRQ_C 12
395#else
396#define ASC_IRQ_A 3
397#define ASC_IRQ_B 5
398#define ASC_IRQ_C 10
399#endif
400
401 switch(ffs(isdp->id_irq) - 1) {
402 case ASC_IRQ_A :
403 scu->int_byte = ASC_CNF_IRQ3;
404 break;
405 case ASC_IRQ_B :
406 scu->int_byte = ASC_CNF_IRQ5;
407 break;
408 case ASC_IRQ_C :
409 scu->int_byte = ASC_CNF_IRQ10;
410 break;
411#if 0
412 case -1:
413 scu->int_byte = 0;
414 lprintf("asc%d.probe: warning - going interruptless\n", unit);
415 break;
416#endif
417 default:
418 lprintf("asc%d.probe: unsupported INT %d (only 3, 5, 10)\n",
419 unit, ffs(isdp->id_irq) - 1 );
420 return PROBE_FAIL;
421 }
422 scu->dma_num = isdp->id_drq;
423 switch(scu->dma_num) {
424 case 1:
425 scu->dma_byte = ASC_CNF_DMA1;
426 break;
427 case 3:
428 scu->dma_byte = ASC_CNF_DMA3;
429 break;
430 default:
431 lprintf("asc%d.probe: unsupported DMA %d (only 1 or 3)\n",
432 unit, scu->dma_num);
433 return PROBE_FAIL;
434 }
435 asc_reset(scu);
436/* lprintf("asc%d.probe: ok\n", unit); */
437
438 scu->flags &= ~FLAG_DEBUG;
439 scu->icnt = 0;
440 return PROBE_SUCCESS;
441}
442
443/**************************************************************************
444 ***
445 *** ascattach
446 *** finish initialization of unit structure, get geometry value (?)
447 ***/
448
449static int
450ascattach(struct isa_device *isdp)
451{
452 int unit = isdp->id_unit;
453 struct asc_unit *scu = unittab + unit;
454
455 isdp->id_ointr = ascintr;
456 scu->flags |= FLAG_DEBUG;
457 printf("asc%d: [GI1904/Trust Ami-Scan Grey/Color]\n", unit);
458
459 /*
460 * Initialize buffer structure.
461 * XXX this must be done early to give a good chance of getting a
462 * contiguous buffer. This wastes memory.
463 */
464 scu->sbuf.base = contigmalloc((unsigned long)MAX_BUFSIZE, M_DEVBUF, M_NOWAIT,
465 0ul, 0xfffffful, 1ul, 0x10000ul);
466 if ( scu->sbuf.base == NULL )
467 {
468 lprintf("asc%d.attach: buffer allocation failed\n", unit);
469 return ATTACH_FAIL; /* XXX attach must not fail */
470 }
471 scu->sbuf.size = INVALID;
472 scu->sbuf.rptr = INVALID;
473
474 scu->flags |= ATTACHED;
475/* lprintf("asc%d.attach: ok\n", unit); */
476 scu->flags &= ~FLAG_DEBUG;
477
478 scu->selp.si_flags=0;
479 scu->selp.si_pid=(pid_t)0;
480#define ASC_UID 0
481#define ASC_GID 13
e4c9c0c8 482 cdevsw_add(&asc_cdevsw, 0xc0, unit << 6);
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483 make_dev(&asc_cdevsw, unit<<6, ASC_UID, ASC_GID, 0666, "asc%d", unit);
484 make_dev(&asc_cdevsw, ((unit<<6) + FRMT_PBM),
485 ASC_UID, ASC_GID, 0666, "asc%dp", unit);
486 make_dev(&asc_cdevsw, ((unit<<6) + DBUG_MASK),
487 ASC_UID, ASC_GID, 0666, "asc%dd", unit);
488 make_dev(&asc_cdevsw, ((unit<<6) + DBUG_MASK+FRMT_PBM),
489 ASC_UID, ASC_GID, 0666, "asc%dpd", unit);
490 return ATTACH_SUCCESS;
491}
492
493/**************************************************************************
494 ***
495 *** ascintr
496 *** the interrupt routine, at the end of DMA...
497 ***/
498static void
499ascintr(int unit)
500{
501 struct asc_unit *scu = unittab + unit;
502 int chan_bit = 0x01 << scu->dma_num;
503
504 scu->icnt++;
505 /* ignore stray interrupts... */
506 if ((scu->flags & (OPEN |READING)) != (OPEN | READING) ) {
507 /* must be after closing... */
508 scu->flags &= ~(OPEN | READING | DMA_ACTIVE | SLEEPING | SEL_COLL);
509 return;
510 }
511 if ( (scu->flags & DMA_ACTIVE) && (inb(DMA1_READY) & chan_bit) != 0) {
512 outb( ASC_CMD, ASC_STANDBY);
513 scu->flags &= ~DMA_ACTIVE;
514 /* bounce buffers... */
515 isa_dmadone(ISADMA_READ, scu->sbuf.base+scu->sbuf.wptr,
516 scu->linesize, scu->dma_num);
517 scu->sbuf.wptr += scu->linesize;
518 if (scu->sbuf.wptr >= scu->sbuf.size) scu->sbuf.wptr=0;
519 scu->sbuf.count += scu->linesize;
520 if (scu->flags & SLEEPING) {
521 scu->flags &= ~SLEEPING;
522 wakeup((caddr_t)scu);
523 }
524 if (scu->sbuf.size - scu->sbuf.count >= scu->linesize) {
525 dma_restart(scu);
526 }
527 if (scu->selp.si_pid) {
528 selwakeup(&scu->selp);
529 scu->selp.si_pid=(pid_t)0;
530 scu->selp.si_flags = 0;
531 }
532 }
533}
534
535/**************************************************************************
536 ***
537 *** ascopen
538 *** set open flag, set modes according to minor number
539 *** FOR RELEASE:
540 *** don't switch scanner on, wait until first read or ioctls go before
541 ***/
542
543STATIC int
7b95be2a 544ascopen(dev_t dev, int flags, int fmt, struct thread *td)
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545{
546 struct asc_unit *scu;
547 int unit;
548
549 unit = UNIT(minor(dev)) & UNIT_MASK;
550 if ( unit >= NASC )
551 {
552#ifdef ASCDEBUG
553 /* XXX lprintf isn't valid here since there is no scu. */
554 printf("asc%d.open: unconfigured unit number (max %d)\n", unit, NASC);
555#endif
556 return ENXIO;
557 }
558 scu = unittab + unit;
559 if ( !( scu->flags & ATTACHED ) )
560 {
561 lprintf("asc%d.open: unit was not attached successfully 0x%04x\n",
562 unit, scu->flags);
563 return ENXIO;
564 }
565
566 if ( minor(dev) & DBUG_MASK )
567 scu->flags |= FLAG_DEBUG;
568 else
569 scu->flags &= ~FLAG_DEBUG;
570
571 switch(minor(dev) & FRMT_MASK) {
572 case FRMT_PBM:
573 scu->flags |= PBM_MODE;
574 lprintf("asc%d.open: pbm mode\n", unit);
575 break;
576 case FRMT_RAW:
577 lprintf("asc%d.open: raw mode\n", unit);
578 scu->flags &= ~PBM_MODE;
579 break;
580 default:
581 lprintf("asc%d.open: gray maps are not yet supported", unit);
582 return ENXIO;
583 }
584
585 lprintf("asc%d.open: minor %d icnt %ld\n", unit, minor(dev), scu->icnt);
586
587 if ( scu->flags & OPEN ) {
588 lprintf("asc%d.open: already open", unit);
589 return EBUSY;
590 }
591 if (isa_dma_acquire(scu->dma_num))
592 return(EBUSY);
593
594 scu->flags = ATTACHED | OPEN;
595
596 asc_reset(scu);
597 get_resolution(scu);
598 return SUCCESS;
599}
600
601static int
602asc_startread(struct asc_unit *scu)
603{
604 /*** from here on, things can be delayed to the first read/ioctl ***/
605 /*** this was done in sub_12... ***/
606 scu->cfg_byte= scu->cmd_byte=0; /* init scanner */
607 outb(ASC_CMD, scu->cmd_byte);
608 /*** this was done in sub_16, set scan len... ***/
609 outb(ASC_BOH, scu->portf_byte );
610 if (geomtab[scu->geometry].g_res==0) { /* color */
611 scu->cmd_byte = 0x00 ;
612 } else {
613 scu->cmd_byte = 0x90 ;
614 }
615 outb(ASC_CMD, scu->cmd_byte);
616 outb(ASC_LEN_L, scu->linesize & 0xff /* len_low */);
617 outb(ASC_LEN_H, (scu->linesize >>8) & 0xff /* len_high */);
618 /*** this was done in sub_21, config DMA ... ***/
619 scu->cfg_byte |= scu->dma_byte;
620 outb(ASC_CFG, scu->cfg_byte);
621 /*** sub_22: enable int on the scanner ***/
622 scu->cfg_byte |= scu->int_byte;
623 outb(ASC_CFG, scu->cfg_byte);
624 /*** sub_28: light on etc...***/
625 scu->cmd_byte = ASC_STANDBY;
626 outb(ASC_CMD, scu->cmd_byte);
377d4740 627 tsleep((caddr_t)scu, PCATCH, "ascstrd", hz/10); /* sleep .1 sec */
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628 return SUCCESS;
629}
630
631/**************************************************************************
632 ***
633 *** ascclose
634 *** turn off scanner, release the buffer
635 *** should probably terminate dma ops, release int and dma. lr 12mar95
636 ***/
637
638STATIC int
7b95be2a 639ascclose(dev_t dev, int flags, int fmt, struct thread *td)
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640{
641 int unit = UNIT(minor(dev));
642 struct asc_unit *scu = unittab + unit;
643
644 lprintf("asc%d.close: minor %d\n",
645 unit, minor(dev));
646
647 if ( unit >= NASC || !( scu->flags & ATTACHED ) ) {
648 lprintf("asc%d.close: unit was not attached successfully 0x%04x\n",
649 unit, scu->flags);
650 return ENXIO;
651 }
652 /* all this is in sub_29... */
653 /* cli(); */
654 outb(ASC_CFG, 0 ); /* don't save in CFG byte!!! */
655 scu->cmd_byte &= ~ASC_LIGHT_ON;
656 outb(ASC_CMD, scu->cmd_byte);/* light off */
377d4740 657 tsleep((caddr_t)scu, PCATCH, "ascclo", hz/2); /* sleep 1/2 sec */
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658 scu->cfg_byte &= ~ scu->dma_byte ; /* disable scanner dma */
659 scu->cfg_byte &= ~ scu->int_byte ; /* disable scanner int */
660 outb(ASC_CFG, scu->cfg_byte);
661 /* --- disable dma controller ? --- */
662 isa_dma_release(scu->dma_num);
663 /* --- disable interrupts on the controller (sub_24) --- */
664
665 scu->sbuf.size = INVALID;
666 scu->sbuf.rptr = INVALID;
667
668 scu->flags &= ~(FLAG_DEBUG | OPEN | READING);
669
670 return SUCCESS;
671}
672
673static void
674pbm_init(struct asc_unit *scu)
675{
676 int width = geomtab[scu->geometry].dpl;
677 int l= sprintf(scu->sbuf.base,"P4 %d %d\n", width, scu->height);
678 char *p;
679
680 scu->bcount = scu->height * width / 8 + l;
681
682 /* move header to end of sbuf */
683 scu->sbuf.rptr=scu->sbuf.size-l;
684 bcopy(scu->sbuf.base, scu->sbuf.base+scu->sbuf.rptr,l);
685 scu->sbuf.count = l;
686 if (geomtab[scu->geometry].g_res!=0) { /* BW scanner */
687 for(p = scu->sbuf.base + scu->sbuf.rptr; l; p++, l--)
688 *p = ~*p;
689}
690}
691/**************************************************************************
692 ***
693 *** ascread
694 ***/
695
696STATIC int
697ascread(dev_t dev, struct uio *uio, int ioflag)
698{
699 int unit = UNIT(minor(dev));
700 struct asc_unit *scu = unittab + unit;
701 size_t nbytes;
702 int sps, res;
703 unsigned char *p;
704
705 lprintf("asc%d.read: minor %d icnt %ld\n", unit, minor(dev), scu->icnt);
706
707 if ( unit >= NASC || !( scu->flags & ATTACHED ) ) {
708 lprintf("asc%d.read: unit was not attached successfully 0x%04x\n",
709 unit, scu->flags);
710 return ENXIO;
711 }
712
713 if ( !(scu->flags & READING) ) { /*** first read... ***/
714 /* allocate a buffer for reading data and init things */
715 if ( (res = buffer_allocate(scu)) == SUCCESS ) scu->flags |= READING;
716 else return res;
717 asc_startread(scu);
718 if ( scu->flags & PBM_MODE ) { /* initialize for pbm mode */
719 pbm_init(scu);
720 }
721 }
722
723 lprintf("asc%d.read(before): "
724 "sz 0x%x, rptr 0x%x, wptr 0x%x, cnt 0x%x bcnt 0x%x flags 0x%x icnt %ld\n",
725 unit, scu->sbuf.size, scu->sbuf.rptr,
726 scu->sbuf.wptr, scu->sbuf.count, scu->bcount,scu->flags,
727 scu->icnt);
728
729 sps=spltty();
730 if ( scu->sbuf.count == 0 ) { /* no data avail., must wait */
731 if (!(scu->flags & DMA_ACTIVE)) dma_restart(scu);
732 scu->flags |= SLEEPING;
377d4740 733 res = tsleep((caddr_t)scu, PCATCH, "ascread", 0);
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734 scu->flags &= ~SLEEPING;
735 if ( res == 0 ) res = SUCCESS;
736 }
737 splx(sps); /* lower priority... */
738 if (scu->flags & FLAG_DEBUG)
377d4740 739 tsleep((caddr_t)scu, PCATCH, "ascdly",hz);
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740 lprintf("asc%d.read(after): "
741 "sz 0x%x, rptr 0x%x, wptr 0x%x, cnt 0x%x bcnt 0x%x flags 0x%x icnt %ld\n",
742 unit, scu->sbuf.size, scu->sbuf.rptr,
743 scu->sbuf.wptr, scu->sbuf.count, scu->bcount,scu->flags,scu->icnt);
744
745 /* first, not more than available... */
746 nbytes = min( uio->uio_resid, scu->sbuf.count );
747 /* second, contiguous data... */
748 nbytes = min( nbytes, (scu->sbuf.size - scu->sbuf.rptr) );
749 /* third, one line (will remove this later, XXX) */
750 nbytes = min( nbytes, scu->linesize );
751 if ( (scu->flags & PBM_MODE) )
752 nbytes = min( nbytes, scu->bcount );
753 lprintf("asc%d.read: transferring 0x%x bytes\n", unit, nbytes);
754 if (geomtab[scu->geometry].g_res!=0) { /* BW scanner */
755 lprintf("asc%d.read: invert buffer\n",unit);
756 for(p = scu->sbuf.base + scu->sbuf.rptr, res=nbytes; res; p++, res--)
757 *p = ~*p;
758 }
759 res = uiomove(scu->sbuf.base + scu->sbuf.rptr, nbytes, uio);
760 if ( res != SUCCESS ) {
761 lprintf("asc%d.read: uiomove failed %d", unit, res);
762 return res;
763 }
764
765 sps=spltty();
766 scu->sbuf.rptr += nbytes;
767 if (scu->sbuf.rptr >= scu->sbuf.size) scu->sbuf.rptr=0;
768 scu->sbuf.count -= nbytes;
769 /* having moved some data, can read mode */
770 if (!(scu->flags & DMA_ACTIVE)) dma_restart(scu);
771 splx(sps); /* lower priority... */
772 if ( scu->flags & PBM_MODE ) scu->bcount -= nbytes;
773
774 lprintf("asc%d.read: size 0x%x, pointer 0x%x, bcount 0x%x, ok\n",
775 unit, scu->sbuf.size, scu->sbuf.rptr, scu->bcount);
776
777 return SUCCESS;
778}
779
780/**************************************************************************
781 ***
782 *** ascioctl
783 ***/
784
785STATIC int
7b95be2a 786ascioctl(dev_t dev, u_long cmd, caddr_t data, int flags, struct thread *td)
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787{
788 int unit = UNIT(minor(dev));
789 struct asc_unit *scu = unittab + unit;
790
791 lprintf("asc%d.ioctl: minor %d\n",
792 unit, minor(dev));
793
794 if ( unit >= NASC || !( scu->flags & ATTACHED ) ) {
795 lprintf("asc%d.ioctl: unit was not attached successfully 0x%04x\n",
796 unit, scu->flags);
797 return ENXIO;
798 }
799 switch(cmd) {
800 case ASC_GRES:
801 asc_reset(scu);
802 get_resolution(scu);
803 *(int *)data=geomtab[scu->geometry].dpi;
804 lprintf("asc%d.ioctl:ASC_GRES %ddpi\n", unit, *(int *)data);
805 return SUCCESS;
806 case ASC_GWIDTH:
807 *(int *)data=geomtab[scu->geometry].dpl;
808 lprintf("asc%d.ioctl:ASC_GWIDTH %d\n", unit, *(int *)data);
809 return SUCCESS;
810 case ASC_GHEIGHT:
811 *(int *)data=scu->height;
812 lprintf("asc%d.ioctl:ASC_GHEIGHT %d\n", unit, *(int *)data);
813 return SUCCESS;
814 case ASC_SHEIGHT:
815 lprintf("asc%d.ioctl:ASC_SHEIGHT %d\n", unit, *(int *)data);
816 if ( scu->flags & READING ) {
817 lprintf("asc%d:ioctl on already reading unit\n", unit);
818 return EBUSY;
819 }
820 scu->height=*(int *)data;
821 return SUCCESS;
822#if 0
823 case ASC_GBLEN:
824 *(int *)data=scu->blen;
825 lprintf("asc%d.ioctl:ASC_GBLEN %d\n", unit, *(int *)data);
826 return SUCCESS;
827 case ASC_SBLEN:
828 lprintf("asc%d.ioctl:ASC_SBLEN %d\n", unit, *(int *)data);
829 if (*(int *)data * geomtab[scu->geometry].dpl / 8 > MAX_BUFSIZE)
830 {
831 lprintf("asc%d:ioctl buffer size too high\n", unit);
832 return ENOMEM;
833 }
834 scu->blen=*(int *)data;
835 return SUCCESS;
836 case ASC_GBTIME:
837 *(int *)data = scu->btime / hz;
838 lprintf("asc%d.ioctl:ASC_GBTIME %d\n", unit, *(int *)data);
839 return SUCCESS;
840 case ASC_SBTIME:
841 scu->btime = *(int *)data * hz;
842 lprintf("asc%d.ioctl:ASC_SBTIME %d\n", unit, *(int *)data);
843 return SUCCESS;
844#endif
845 default: return ENOTTY;
846 }
847 return SUCCESS;
848}
849
850STATIC int
7b95be2a 851ascpoll(dev_t dev, int events, struct thread *td)
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852{
853 int unit = UNIT(minor(dev));
854 struct asc_unit *scu = unittab + unit;
855 int sps;
7b95be2a 856 struct proc *p;
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857 struct proc *p1;
858 int revents = 0;
859
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860 p = td->td_proc;
861 KKASSERT(p);
862
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863 sps=spltty();
864
865 if (events & (POLLIN | POLLRDNORM)) {
866 if (scu->sbuf.count >0)
867 revents |= events & (POLLIN | POLLRDNORM);
868 else {
869 if (!(scu->flags & DMA_ACTIVE))
870 dma_restart(scu);
871
872 if (scu->selp.si_pid && (p1=pfind(scu->selp.si_pid))
873 && p1->p_wchan == (caddr_t)&selwait)
874 scu->selp.si_flags = SI_COLL;
875 else
876 scu->selp.si_pid = p->p_pid;
877 }
878 }
879 splx(sps);
880 return (revents);
881}