Hardwire i386 instead of using the borken machine variable
[dragonfly.git] / sys / platform / pc32 / 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 $
7b95be2a 38 * $DragonFly: src/sys/platform/pc32/isa/asc.c,v 1.5 2003/07/21 07:57:44 dillon Exp $
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39 */
40
41#include "asc.h"
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
55#include <i386/isa/isa.h>
56#include <i386/isa/isa_device.h>
57#include <i386/isa/ascreg.h>
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,
194 /* autoq */ 0,
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;
366 static int once;
367
368 if (!once++)
369 cdevsw_add(&asc_cdevsw);
370
371 scu->base = isdp->id_iobase; /*** needed by the following macros ***/
372 scu->flags = FLAG_DEBUG;
373
374 if ( isdp->id_iobase < 0 ) {
375 lprintf("asc%d.probe: no iobase given\n", unit);
376 return PROBE_FAIL;
377 }
378
379 if ((stb=inb(ASC_PROBE)) != ASC_PROBE_VALUE) {
380 lprintf("asc%d.probe: failed, got 0x%02x instead of 0x%02x\n",
381 unit, stb, ASC_PROBE_VALUE);
382 return PROBE_FAIL;
383 }
384
385/*
386 * NOTE NOTE NOTE
387 * the new AmiScan Color board uses int 10,11,12 instead of 3,5,10
388 * respectively. This means that the driver must act accordingly.
389 * Unfortunately there is no easy way of telling which board one has,
390 * other than trying to get an interrupt and noticing that it is
391 * missing. use "option ASC_NEW_BOARD" if you have a new board.
392 *
393 */
394
395#if ASC_NEW_BOARD
396#define ASC_IRQ_A 10
397#define ASC_IRQ_B 11
398#define ASC_IRQ_C 12
399#else
400#define ASC_IRQ_A 3
401#define ASC_IRQ_B 5
402#define ASC_IRQ_C 10
403#endif
404
405 switch(ffs(isdp->id_irq) - 1) {
406 case ASC_IRQ_A :
407 scu->int_byte = ASC_CNF_IRQ3;
408 break;
409 case ASC_IRQ_B :
410 scu->int_byte = ASC_CNF_IRQ5;
411 break;
412 case ASC_IRQ_C :
413 scu->int_byte = ASC_CNF_IRQ10;
414 break;
415#if 0
416 case -1:
417 scu->int_byte = 0;
418 lprintf("asc%d.probe: warning - going interruptless\n", unit);
419 break;
420#endif
421 default:
422 lprintf("asc%d.probe: unsupported INT %d (only 3, 5, 10)\n",
423 unit, ffs(isdp->id_irq) - 1 );
424 return PROBE_FAIL;
425 }
426 scu->dma_num = isdp->id_drq;
427 switch(scu->dma_num) {
428 case 1:
429 scu->dma_byte = ASC_CNF_DMA1;
430 break;
431 case 3:
432 scu->dma_byte = ASC_CNF_DMA3;
433 break;
434 default:
435 lprintf("asc%d.probe: unsupported DMA %d (only 1 or 3)\n",
436 unit, scu->dma_num);
437 return PROBE_FAIL;
438 }
439 asc_reset(scu);
440/* lprintf("asc%d.probe: ok\n", unit); */
441
442 scu->flags &= ~FLAG_DEBUG;
443 scu->icnt = 0;
444 return PROBE_SUCCESS;
445}
446
447/**************************************************************************
448 ***
449 *** ascattach
450 *** finish initialization of unit structure, get geometry value (?)
451 ***/
452
453static int
454ascattach(struct isa_device *isdp)
455{
456 int unit = isdp->id_unit;
457 struct asc_unit *scu = unittab + unit;
458
459 isdp->id_ointr = ascintr;
460 scu->flags |= FLAG_DEBUG;
461 printf("asc%d: [GI1904/Trust Ami-Scan Grey/Color]\n", unit);
462
463 /*
464 * Initialize buffer structure.
465 * XXX this must be done early to give a good chance of getting a
466 * contiguous buffer. This wastes memory.
467 */
468 scu->sbuf.base = contigmalloc((unsigned long)MAX_BUFSIZE, M_DEVBUF, M_NOWAIT,
469 0ul, 0xfffffful, 1ul, 0x10000ul);
470 if ( scu->sbuf.base == NULL )
471 {
472 lprintf("asc%d.attach: buffer allocation failed\n", unit);
473 return ATTACH_FAIL; /* XXX attach must not fail */
474 }
475 scu->sbuf.size = INVALID;
476 scu->sbuf.rptr = INVALID;
477
478 scu->flags |= ATTACHED;
479/* lprintf("asc%d.attach: ok\n", unit); */
480 scu->flags &= ~FLAG_DEBUG;
481
482 scu->selp.si_flags=0;
483 scu->selp.si_pid=(pid_t)0;
484#define ASC_UID 0
485#define ASC_GID 13
486 make_dev(&asc_cdevsw, unit<<6, ASC_UID, ASC_GID, 0666, "asc%d", unit);
487 make_dev(&asc_cdevsw, ((unit<<6) + FRMT_PBM),
488 ASC_UID, ASC_GID, 0666, "asc%dp", unit);
489 make_dev(&asc_cdevsw, ((unit<<6) + DBUG_MASK),
490 ASC_UID, ASC_GID, 0666, "asc%dd", unit);
491 make_dev(&asc_cdevsw, ((unit<<6) + DBUG_MASK+FRMT_PBM),
492 ASC_UID, ASC_GID, 0666, "asc%dpd", unit);
493 return ATTACH_SUCCESS;
494}
495
496/**************************************************************************
497 ***
498 *** ascintr
499 *** the interrupt routine, at the end of DMA...
500 ***/
501static void
502ascintr(int unit)
503{
504 struct asc_unit *scu = unittab + unit;
505 int chan_bit = 0x01 << scu->dma_num;
506
507 scu->icnt++;
508 /* ignore stray interrupts... */
509 if ((scu->flags & (OPEN |READING)) != (OPEN | READING) ) {
510 /* must be after closing... */
511 scu->flags &= ~(OPEN | READING | DMA_ACTIVE | SLEEPING | SEL_COLL);
512 return;
513 }
514 if ( (scu->flags & DMA_ACTIVE) && (inb(DMA1_READY) & chan_bit) != 0) {
515 outb( ASC_CMD, ASC_STANDBY);
516 scu->flags &= ~DMA_ACTIVE;
517 /* bounce buffers... */
518 isa_dmadone(ISADMA_READ, scu->sbuf.base+scu->sbuf.wptr,
519 scu->linesize, scu->dma_num);
520 scu->sbuf.wptr += scu->linesize;
521 if (scu->sbuf.wptr >= scu->sbuf.size) scu->sbuf.wptr=0;
522 scu->sbuf.count += scu->linesize;
523 if (scu->flags & SLEEPING) {
524 scu->flags &= ~SLEEPING;
525 wakeup((caddr_t)scu);
526 }
527 if (scu->sbuf.size - scu->sbuf.count >= scu->linesize) {
528 dma_restart(scu);
529 }
530 if (scu->selp.si_pid) {
531 selwakeup(&scu->selp);
532 scu->selp.si_pid=(pid_t)0;
533 scu->selp.si_flags = 0;
534 }
535 }
536}
537
538/**************************************************************************
539 ***
540 *** ascopen
541 *** set open flag, set modes according to minor number
542 *** FOR RELEASE:
543 *** don't switch scanner on, wait until first read or ioctls go before
544 ***/
545
546STATIC int
7b95be2a 547ascopen(dev_t dev, int flags, int fmt, struct thread *td)
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548{
549 struct asc_unit *scu;
550 int unit;
551
552 unit = UNIT(minor(dev)) & UNIT_MASK;
553 if ( unit >= NASC )
554 {
555#ifdef ASCDEBUG
556 /* XXX lprintf isn't valid here since there is no scu. */
557 printf("asc%d.open: unconfigured unit number (max %d)\n", unit, NASC);
558#endif
559 return ENXIO;
560 }
561 scu = unittab + unit;
562 if ( !( scu->flags & ATTACHED ) )
563 {
564 lprintf("asc%d.open: unit was not attached successfully 0x%04x\n",
565 unit, scu->flags);
566 return ENXIO;
567 }
568
569 if ( minor(dev) & DBUG_MASK )
570 scu->flags |= FLAG_DEBUG;
571 else
572 scu->flags &= ~FLAG_DEBUG;
573
574 switch(minor(dev) & FRMT_MASK) {
575 case FRMT_PBM:
576 scu->flags |= PBM_MODE;
577 lprintf("asc%d.open: pbm mode\n", unit);
578 break;
579 case FRMT_RAW:
580 lprintf("asc%d.open: raw mode\n", unit);
581 scu->flags &= ~PBM_MODE;
582 break;
583 default:
584 lprintf("asc%d.open: gray maps are not yet supported", unit);
585 return ENXIO;
586 }
587
588 lprintf("asc%d.open: minor %d icnt %ld\n", unit, minor(dev), scu->icnt);
589
590 if ( scu->flags & OPEN ) {
591 lprintf("asc%d.open: already open", unit);
592 return EBUSY;
593 }
594 if (isa_dma_acquire(scu->dma_num))
595 return(EBUSY);
596
597 scu->flags = ATTACHED | OPEN;
598
599 asc_reset(scu);
600 get_resolution(scu);
601 return SUCCESS;
602}
603
604static int
605asc_startread(struct asc_unit *scu)
606{
607 /*** from here on, things can be delayed to the first read/ioctl ***/
608 /*** this was done in sub_12... ***/
609 scu->cfg_byte= scu->cmd_byte=0; /* init scanner */
610 outb(ASC_CMD, scu->cmd_byte);
611 /*** this was done in sub_16, set scan len... ***/
612 outb(ASC_BOH, scu->portf_byte );
613 if (geomtab[scu->geometry].g_res==0) { /* color */
614 scu->cmd_byte = 0x00 ;
615 } else {
616 scu->cmd_byte = 0x90 ;
617 }
618 outb(ASC_CMD, scu->cmd_byte);
619 outb(ASC_LEN_L, scu->linesize & 0xff /* len_low */);
620 outb(ASC_LEN_H, (scu->linesize >>8) & 0xff /* len_high */);
621 /*** this was done in sub_21, config DMA ... ***/
622 scu->cfg_byte |= scu->dma_byte;
623 outb(ASC_CFG, scu->cfg_byte);
624 /*** sub_22: enable int on the scanner ***/
625 scu->cfg_byte |= scu->int_byte;
626 outb(ASC_CFG, scu->cfg_byte);
627 /*** sub_28: light on etc...***/
628 scu->cmd_byte = ASC_STANDBY;
629 outb(ASC_CMD, scu->cmd_byte);
377d4740 630 tsleep((caddr_t)scu, PCATCH, "ascstrd", hz/10); /* sleep .1 sec */
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631 return SUCCESS;
632}
633
634/**************************************************************************
635 ***
636 *** ascclose
637 *** turn off scanner, release the buffer
638 *** should probably terminate dma ops, release int and dma. lr 12mar95
639 ***/
640
641STATIC int
7b95be2a 642ascclose(dev_t dev, int flags, int fmt, struct thread *td)
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643{
644 int unit = UNIT(minor(dev));
645 struct asc_unit *scu = unittab + unit;
646
647 lprintf("asc%d.close: minor %d\n",
648 unit, minor(dev));
649
650 if ( unit >= NASC || !( scu->flags & ATTACHED ) ) {
651 lprintf("asc%d.close: unit was not attached successfully 0x%04x\n",
652 unit, scu->flags);
653 return ENXIO;
654 }
655 /* all this is in sub_29... */
656 /* cli(); */
657 outb(ASC_CFG, 0 ); /* don't save in CFG byte!!! */
658 scu->cmd_byte &= ~ASC_LIGHT_ON;
659 outb(ASC_CMD, scu->cmd_byte);/* light off */
377d4740 660 tsleep((caddr_t)scu, PCATCH, "ascclo", hz/2); /* sleep 1/2 sec */
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661 scu->cfg_byte &= ~ scu->dma_byte ; /* disable scanner dma */
662 scu->cfg_byte &= ~ scu->int_byte ; /* disable scanner int */
663 outb(ASC_CFG, scu->cfg_byte);
664 /* --- disable dma controller ? --- */
665 isa_dma_release(scu->dma_num);
666 /* --- disable interrupts on the controller (sub_24) --- */
667
668 scu->sbuf.size = INVALID;
669 scu->sbuf.rptr = INVALID;
670
671 scu->flags &= ~(FLAG_DEBUG | OPEN | READING);
672
673 return SUCCESS;
674}
675
676static void
677pbm_init(struct asc_unit *scu)
678{
679 int width = geomtab[scu->geometry].dpl;
680 int l= sprintf(scu->sbuf.base,"P4 %d %d\n", width, scu->height);
681 char *p;
682
683 scu->bcount = scu->height * width / 8 + l;
684
685 /* move header to end of sbuf */
686 scu->sbuf.rptr=scu->sbuf.size-l;
687 bcopy(scu->sbuf.base, scu->sbuf.base+scu->sbuf.rptr,l);
688 scu->sbuf.count = l;
689 if (geomtab[scu->geometry].g_res!=0) { /* BW scanner */
690 for(p = scu->sbuf.base + scu->sbuf.rptr; l; p++, l--)
691 *p = ~*p;
692}
693}
694/**************************************************************************
695 ***
696 *** ascread
697 ***/
698
699STATIC int
700ascread(dev_t dev, struct uio *uio, int ioflag)
701{
702 int unit = UNIT(minor(dev));
703 struct asc_unit *scu = unittab + unit;
704 size_t nbytes;
705 int sps, res;
706 unsigned char *p;
707
708 lprintf("asc%d.read: minor %d icnt %ld\n", unit, minor(dev), scu->icnt);
709
710 if ( unit >= NASC || !( scu->flags & ATTACHED ) ) {
711 lprintf("asc%d.read: unit was not attached successfully 0x%04x\n",
712 unit, scu->flags);
713 return ENXIO;
714 }
715
716 if ( !(scu->flags & READING) ) { /*** first read... ***/
717 /* allocate a buffer for reading data and init things */
718 if ( (res = buffer_allocate(scu)) == SUCCESS ) scu->flags |= READING;
719 else return res;
720 asc_startread(scu);
721 if ( scu->flags & PBM_MODE ) { /* initialize for pbm mode */
722 pbm_init(scu);
723 }
724 }
725
726 lprintf("asc%d.read(before): "
727 "sz 0x%x, rptr 0x%x, wptr 0x%x, cnt 0x%x bcnt 0x%x flags 0x%x icnt %ld\n",
728 unit, scu->sbuf.size, scu->sbuf.rptr,
729 scu->sbuf.wptr, scu->sbuf.count, scu->bcount,scu->flags,
730 scu->icnt);
731
732 sps=spltty();
733 if ( scu->sbuf.count == 0 ) { /* no data avail., must wait */
734 if (!(scu->flags & DMA_ACTIVE)) dma_restart(scu);
735 scu->flags |= SLEEPING;
377d4740 736 res = tsleep((caddr_t)scu, PCATCH, "ascread", 0);
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737 scu->flags &= ~SLEEPING;
738 if ( res == 0 ) res = SUCCESS;
739 }
740 splx(sps); /* lower priority... */
741 if (scu->flags & FLAG_DEBUG)
377d4740 742 tsleep((caddr_t)scu, PCATCH, "ascdly",hz);
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743 lprintf("asc%d.read(after): "
744 "sz 0x%x, rptr 0x%x, wptr 0x%x, cnt 0x%x bcnt 0x%x flags 0x%x icnt %ld\n",
745 unit, scu->sbuf.size, scu->sbuf.rptr,
746 scu->sbuf.wptr, scu->sbuf.count, scu->bcount,scu->flags,scu->icnt);
747
748 /* first, not more than available... */
749 nbytes = min( uio->uio_resid, scu->sbuf.count );
750 /* second, contiguous data... */
751 nbytes = min( nbytes, (scu->sbuf.size - scu->sbuf.rptr) );
752 /* third, one line (will remove this later, XXX) */
753 nbytes = min( nbytes, scu->linesize );
754 if ( (scu->flags & PBM_MODE) )
755 nbytes = min( nbytes, scu->bcount );
756 lprintf("asc%d.read: transferring 0x%x bytes\n", unit, nbytes);
757 if (geomtab[scu->geometry].g_res!=0) { /* BW scanner */
758 lprintf("asc%d.read: invert buffer\n",unit);
759 for(p = scu->sbuf.base + scu->sbuf.rptr, res=nbytes; res; p++, res--)
760 *p = ~*p;
761 }
762 res = uiomove(scu->sbuf.base + scu->sbuf.rptr, nbytes, uio);
763 if ( res != SUCCESS ) {
764 lprintf("asc%d.read: uiomove failed %d", unit, res);
765 return res;
766 }
767
768 sps=spltty();
769 scu->sbuf.rptr += nbytes;
770 if (scu->sbuf.rptr >= scu->sbuf.size) scu->sbuf.rptr=0;
771 scu->sbuf.count -= nbytes;
772 /* having moved some data, can read mode */
773 if (!(scu->flags & DMA_ACTIVE)) dma_restart(scu);
774 splx(sps); /* lower priority... */
775 if ( scu->flags & PBM_MODE ) scu->bcount -= nbytes;
776
777 lprintf("asc%d.read: size 0x%x, pointer 0x%x, bcount 0x%x, ok\n",
778 unit, scu->sbuf.size, scu->sbuf.rptr, scu->bcount);
779
780 return SUCCESS;
781}
782
783/**************************************************************************
784 ***
785 *** ascioctl
786 ***/
787
788STATIC int
7b95be2a 789ascioctl(dev_t dev, u_long cmd, caddr_t data, int flags, struct thread *td)
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790{
791 int unit = UNIT(minor(dev));
792 struct asc_unit *scu = unittab + unit;
793
794 lprintf("asc%d.ioctl: minor %d\n",
795 unit, minor(dev));
796
797 if ( unit >= NASC || !( scu->flags & ATTACHED ) ) {
798 lprintf("asc%d.ioctl: unit was not attached successfully 0x%04x\n",
799 unit, scu->flags);
800 return ENXIO;
801 }
802 switch(cmd) {
803 case ASC_GRES:
804 asc_reset(scu);
805 get_resolution(scu);
806 *(int *)data=geomtab[scu->geometry].dpi;
807 lprintf("asc%d.ioctl:ASC_GRES %ddpi\n", unit, *(int *)data);
808 return SUCCESS;
809 case ASC_GWIDTH:
810 *(int *)data=geomtab[scu->geometry].dpl;
811 lprintf("asc%d.ioctl:ASC_GWIDTH %d\n", unit, *(int *)data);
812 return SUCCESS;
813 case ASC_GHEIGHT:
814 *(int *)data=scu->height;
815 lprintf("asc%d.ioctl:ASC_GHEIGHT %d\n", unit, *(int *)data);
816 return SUCCESS;
817 case ASC_SHEIGHT:
818 lprintf("asc%d.ioctl:ASC_SHEIGHT %d\n", unit, *(int *)data);
819 if ( scu->flags & READING ) {
820 lprintf("asc%d:ioctl on already reading unit\n", unit);
821 return EBUSY;
822 }
823 scu->height=*(int *)data;
824 return SUCCESS;
825#if 0
826 case ASC_GBLEN:
827 *(int *)data=scu->blen;
828 lprintf("asc%d.ioctl:ASC_GBLEN %d\n", unit, *(int *)data);
829 return SUCCESS;
830 case ASC_SBLEN:
831 lprintf("asc%d.ioctl:ASC_SBLEN %d\n", unit, *(int *)data);
832 if (*(int *)data * geomtab[scu->geometry].dpl / 8 > MAX_BUFSIZE)
833 {
834 lprintf("asc%d:ioctl buffer size too high\n", unit);
835 return ENOMEM;
836 }
837 scu->blen=*(int *)data;
838 return SUCCESS;
839 case ASC_GBTIME:
840 *(int *)data = scu->btime / hz;
841 lprintf("asc%d.ioctl:ASC_GBTIME %d\n", unit, *(int *)data);
842 return SUCCESS;
843 case ASC_SBTIME:
844 scu->btime = *(int *)data * hz;
845 lprintf("asc%d.ioctl:ASC_SBTIME %d\n", unit, *(int *)data);
846 return SUCCESS;
847#endif
848 default: return ENOTTY;
849 }
850 return SUCCESS;
851}
852
853STATIC int
7b95be2a 854ascpoll(dev_t dev, int events, struct thread *td)
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855{
856 int unit = UNIT(minor(dev));
857 struct asc_unit *scu = unittab + unit;
858 int sps;
7b95be2a 859 struct proc *p;
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860 struct proc *p1;
861 int revents = 0;
862
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863 p = td->td_proc;
864 KKASSERT(p);
865
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866 sps=spltty();
867
868 if (events & (POLLIN | POLLRDNORM)) {
869 if (scu->sbuf.count >0)
870 revents |= events & (POLLIN | POLLRDNORM);
871 else {
872 if (!(scu->flags & DMA_ACTIVE))
873 dma_restart(scu);
874
875 if (scu->selp.si_pid && (p1=pfind(scu->selp.si_pid))
876 && p1->p_wchan == (caddr_t)&selwait)
877 scu->selp.si_flags = SI_COLL;
878 else
879 scu->selp.si_pid = p->p_pid;
880 }
881 }
882 splx(sps);
883 return (revents);
884}