Fix a minor compile-time errors when INVARIANTS is not defined.
[dragonfly.git] / sys / platform / pc32 / isa / asc.c
CommitLineData
984263bc
MD
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 $
377d4740 38 * $DragonFly: src/sys/platform/pc32/isa/asc.c,v 1.3 2003/07/19 21:14:34 dillon Exp $
984263bc
MD
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 */
984263bc
MD
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 = {
190 /* open */ ascopen,
191 /* close */ ascclose,
192 /* read */ ascread,
193 /* write */ nowrite,
194 /* ioctl */ ascioctl,
195 /* poll */ ascpoll,
196 /* mmap */ nommap,
197 /* strategy */ nostrategy,
198 /* name */ "asc",
199 /* maj */ CDEV_MAJOR,
200 /* dump */ nodump,
201 /* psize */ nopsize,
202 /* flags */ 0,
203 /* bmaj */ -1
204};
205
206#define STATIC static
207
208/***
209 *** LOCALLY USED SUBROUTINES
210 ***
211 ***/
212
213/***
214 *** get_resolution
215 *** read resolution from the scanner
216 ***/
217static void
218get_resolution(struct asc_unit *scu)
219{
220 int res, i, delay;
221
222 res=0;
223 scu->cmd_byte = ASC_STANDBY;
224 outb(ASC_CMD, scu->cmd_byte);
377d4740 225 tsleep((caddr_t)scu, PCATCH, "ascres", hz/10);
984263bc
MD
226 for(delay= 100; (res=inb(ASC_STAT)) & ASC_RDY_FLAG; delay--)
227 {
377d4740 228 i = tsleep((caddr_t)scu, PCATCH, "ascres0", 1);
984263bc
MD
229 if ( ( i == 0 ) || ( i == EWOULDBLOCK ) )
230 i = SUCCESS;
231 else
232 break;
233 }
234 if (delay==0) {
235 lprintf("asc.get_resolution: timeout completing command\n");
236 return /* -1 */;
237 }
238 /* ... actual read resolution... */
239 res &= ASC_RES_MASK;
240 for (i=0; geomtab[i].dpi != INVALID; i++) {
241 if (geomtab[i].g_res == res) break;
242 }
243 if (geomtab[i].dpi==INVALID) {
244 scu->geometry= i; /* INVALID; */
245 lprintf("asc.get_resolution: wrong resolution\n");
246 } else {
247 lprintf("asc.get_resolution: %d dpi\n",geomtab[i].dpi);
248 scu->geometry = i;
249 }
250 scu->portf_byte=0; /* default */
251 if (geomtab[scu->geometry].g_res==0 && !(scu->thedev&FRMT_GRAY)) {
252 /* color scanner seems to require this */
253 scu->portf_byte=2;
254 /* scu->geometry++; */
255 }
256 scu->linesize = geomtab[scu->geometry].bpl;
257 scu->height = geomtab[scu->geometry].dpl; /* default... */
258}
259
260/***
261 *** buffer_allocate
262 *** allocate/reallocate a buffer
263 *** Now just checks that the preallocated buffer is large enough.
264 ***/
265
266static int
267buffer_allocate(struct asc_unit *scu)
268{
269 size_t size, size1;
270
271 size = scu->blen * scu->linesize;
272
273 lprintf("asc.buffer_allocate: need 0x%x bytes\n", size);
274
275 if ( size > MAX_BUFSIZE ) {
276 size1=size;
277 size= ( (MAX_BUFSIZE+scu->linesize-1) / scu->linesize)*scu->linesize;
278 lprintf("asc.buffer_allocate: 0x%x bytes are too much, try 0x%x\n",
279 size1, size);
280 return ENOMEM;
281 }
282
283 scu->sbuf.size = size;
284 scu->sbuf.rptr = 0;
285 scu->sbuf.wptr = 0;
286 scu->sbuf.count = 0; /* available data for reading */
287
288 lprintf("asc.buffer_allocate: ok\n");
289
290 return SUCCESS;
291}
292
293/*** dma_restart
294 *** invoked locally to start dma. Must run in a critical section
295 ***/
296static void
297dma_restart(struct asc_unit *scu)
298{
299 unsigned char al=scu->cmd_byte;
300
301 if (geomtab[scu->geometry].g_res==0) {/* color */
302 isa_dmastart(ISADMA_READ, scu->sbuf.base+scu->sbuf.wptr,
303 scu->linesize + 90 /* XXX */ , scu->dma_num);
304 /*
305 * looks like we have to set and then clear this
306 * bit to enable the scanner to send interrupts
307 */
308 outb( ASC_CMD, al |= 4 ); /* seems to disable interrupts */
309#if 0
310 outb( ASC_CMD, al |= 8 ); /* ??? seems useless */
311#endif
312 outb( ASC_CMD, al &= 0xfb );
313 scu->cmd_byte = al;
314 } else { /* normal */
315 isa_dmastart(ISADMA_READ, scu->sbuf.base+scu->sbuf.wptr,
316 scu->linesize, scu->dma_num);
317 /*** this is done in sub_20, after dmastart ? ***/
318#if 0
319 outb( ASC_CMD, al |= 4 );
320 outb( ASC_CMD, al |= 8 ); /* ??? seems useless */
321 outb( ASC_CMD, al &= 0xfb );
322 scu->cmd_byte = al;
323#else
324 outb( ASC_CMD, ASC_OPERATE);
325#endif
326 }
327 scu->flags |= DMA_ACTIVE;
328}
329
330/***
331 *** the main functions
332 ***/
333
334/*** asc_reset
335 *** resets the scanner and the config bytes...
336 ***/
337static void
338asc_reset(struct asc_unit *scu)
339{
340 scu->cfg_byte = 0 ; /* clear... */
341 scu->cmd_byte = 0 ; /* clear... */
342
343 outb(ASC_CFG,scu->cfg_byte); /* for safety, do this here */
344 outb(ASC_CMD,scu->cmd_byte); /* probably not needed */
377d4740 345 tsleep((caddr_t)scu, PCATCH, "ascres", hz/10); /* sleep .1 sec */
984263bc
MD
346
347 scu->blen = DEFAULT_BLEN;
348 scu->btime = TIMEOUT;
349 scu->height = 0 ; /* don't know better... */
350}
351/**************************************************************************
352 ***
353 *** ascprobe
354 *** read status port and check for proper configuration:
355 *** - if address group matches (status byte has reasonable value)
356 *** cannot check interrupt/dma, only clear the config byte.
357 ***/
358static int
359ascprobe (struct isa_device *isdp)
360{
361 int unit = isdp->id_unit;
362 struct asc_unit *scu = unittab + unit;
363 int stb;
364 static int once;
365
366 if (!once++)
367 cdevsw_add(&asc_cdevsw);
368
369 scu->base = isdp->id_iobase; /*** needed by the following macros ***/
370 scu->flags = FLAG_DEBUG;
371
372 if ( isdp->id_iobase < 0 ) {
373 lprintf("asc%d.probe: no iobase given\n", unit);
374 return PROBE_FAIL;
375 }
376
377 if ((stb=inb(ASC_PROBE)) != ASC_PROBE_VALUE) {
378 lprintf("asc%d.probe: failed, got 0x%02x instead of 0x%02x\n",
379 unit, stb, ASC_PROBE_VALUE);
380 return PROBE_FAIL;
381 }
382
383/*
384 * NOTE NOTE NOTE
385 * the new AmiScan Color board uses int 10,11,12 instead of 3,5,10
386 * respectively. This means that the driver must act accordingly.
387 * Unfortunately there is no easy way of telling which board one has,
388 * other than trying to get an interrupt and noticing that it is
389 * missing. use "option ASC_NEW_BOARD" if you have a new board.
390 *
391 */
392
393#if ASC_NEW_BOARD
394#define ASC_IRQ_A 10
395#define ASC_IRQ_B 11
396#define ASC_IRQ_C 12
397#else
398#define ASC_IRQ_A 3
399#define ASC_IRQ_B 5
400#define ASC_IRQ_C 10
401#endif
402
403 switch(ffs(isdp->id_irq) - 1) {
404 case ASC_IRQ_A :
405 scu->int_byte = ASC_CNF_IRQ3;
406 break;
407 case ASC_IRQ_B :
408 scu->int_byte = ASC_CNF_IRQ5;
409 break;
410 case ASC_IRQ_C :
411 scu->int_byte = ASC_CNF_IRQ10;
412 break;
413#if 0
414 case -1:
415 scu->int_byte = 0;
416 lprintf("asc%d.probe: warning - going interruptless\n", unit);
417 break;
418#endif
419 default:
420 lprintf("asc%d.probe: unsupported INT %d (only 3, 5, 10)\n",
421 unit, ffs(isdp->id_irq) - 1 );
422 return PROBE_FAIL;
423 }
424 scu->dma_num = isdp->id_drq;
425 switch(scu->dma_num) {
426 case 1:
427 scu->dma_byte = ASC_CNF_DMA1;
428 break;
429 case 3:
430 scu->dma_byte = ASC_CNF_DMA3;
431 break;
432 default:
433 lprintf("asc%d.probe: unsupported DMA %d (only 1 or 3)\n",
434 unit, scu->dma_num);
435 return PROBE_FAIL;
436 }
437 asc_reset(scu);
438/* lprintf("asc%d.probe: ok\n", unit); */
439
440 scu->flags &= ~FLAG_DEBUG;
441 scu->icnt = 0;
442 return PROBE_SUCCESS;
443}
444
445/**************************************************************************
446 ***
447 *** ascattach
448 *** finish initialization of unit structure, get geometry value (?)
449 ***/
450
451static int
452ascattach(struct isa_device *isdp)
453{
454 int unit = isdp->id_unit;
455 struct asc_unit *scu = unittab + unit;
456
457 isdp->id_ointr = ascintr;
458 scu->flags |= FLAG_DEBUG;
459 printf("asc%d: [GI1904/Trust Ami-Scan Grey/Color]\n", unit);
460
461 /*
462 * Initialize buffer structure.
463 * XXX this must be done early to give a good chance of getting a
464 * contiguous buffer. This wastes memory.
465 */
466 scu->sbuf.base = contigmalloc((unsigned long)MAX_BUFSIZE, M_DEVBUF, M_NOWAIT,
467 0ul, 0xfffffful, 1ul, 0x10000ul);
468 if ( scu->sbuf.base == NULL )
469 {
470 lprintf("asc%d.attach: buffer allocation failed\n", unit);
471 return ATTACH_FAIL; /* XXX attach must not fail */
472 }
473 scu->sbuf.size = INVALID;
474 scu->sbuf.rptr = INVALID;
475
476 scu->flags |= ATTACHED;
477/* lprintf("asc%d.attach: ok\n", unit); */
478 scu->flags &= ~FLAG_DEBUG;
479
480 scu->selp.si_flags=0;
481 scu->selp.si_pid=(pid_t)0;
482#define ASC_UID 0
483#define ASC_GID 13
484 make_dev(&asc_cdevsw, unit<<6, ASC_UID, ASC_GID, 0666, "asc%d", unit);
485 make_dev(&asc_cdevsw, ((unit<<6) + FRMT_PBM),
486 ASC_UID, ASC_GID, 0666, "asc%dp", unit);
487 make_dev(&asc_cdevsw, ((unit<<6) + DBUG_MASK),
488 ASC_UID, ASC_GID, 0666, "asc%dd", unit);
489 make_dev(&asc_cdevsw, ((unit<<6) + DBUG_MASK+FRMT_PBM),
490 ASC_UID, ASC_GID, 0666, "asc%dpd", unit);
491 return ATTACH_SUCCESS;
492}
493
494/**************************************************************************
495 ***
496 *** ascintr
497 *** the interrupt routine, at the end of DMA...
498 ***/
499static void
500ascintr(int unit)
501{
502 struct asc_unit *scu = unittab + unit;
503 int chan_bit = 0x01 << scu->dma_num;
504
505 scu->icnt++;
506 /* ignore stray interrupts... */
507 if ((scu->flags & (OPEN |READING)) != (OPEN | READING) ) {
508 /* must be after closing... */
509 scu->flags &= ~(OPEN | READING | DMA_ACTIVE | SLEEPING | SEL_COLL);
510 return;
511 }
512 if ( (scu->flags & DMA_ACTIVE) && (inb(DMA1_READY) & chan_bit) != 0) {
513 outb( ASC_CMD, ASC_STANDBY);
514 scu->flags &= ~DMA_ACTIVE;
515 /* bounce buffers... */
516 isa_dmadone(ISADMA_READ, scu->sbuf.base+scu->sbuf.wptr,
517 scu->linesize, scu->dma_num);
518 scu->sbuf.wptr += scu->linesize;
519 if (scu->sbuf.wptr >= scu->sbuf.size) scu->sbuf.wptr=0;
520 scu->sbuf.count += scu->linesize;
521 if (scu->flags & SLEEPING) {
522 scu->flags &= ~SLEEPING;
523 wakeup((caddr_t)scu);
524 }
525 if (scu->sbuf.size - scu->sbuf.count >= scu->linesize) {
526 dma_restart(scu);
527 }
528 if (scu->selp.si_pid) {
529 selwakeup(&scu->selp);
530 scu->selp.si_pid=(pid_t)0;
531 scu->selp.si_flags = 0;
532 }
533 }
534}
535
536/**************************************************************************
537 ***
538 *** ascopen
539 *** set open flag, set modes according to minor number
540 *** FOR RELEASE:
541 *** don't switch scanner on, wait until first read or ioctls go before
542 ***/
543
544STATIC int
545ascopen(dev_t dev, int flags, int fmt, struct proc *p)
546{
547 struct asc_unit *scu;
548 int unit;
549
550 unit = UNIT(minor(dev)) & UNIT_MASK;
551 if ( unit >= NASC )
552 {
553#ifdef ASCDEBUG
554 /* XXX lprintf isn't valid here since there is no scu. */
555 printf("asc%d.open: unconfigured unit number (max %d)\n", unit, NASC);
556#endif
557 return ENXIO;
558 }
559 scu = unittab + unit;
560 if ( !( scu->flags & ATTACHED ) )
561 {
562 lprintf("asc%d.open: unit was not attached successfully 0x%04x\n",
563 unit, scu->flags);
564 return ENXIO;
565 }
566
567 if ( minor(dev) & DBUG_MASK )
568 scu->flags |= FLAG_DEBUG;
569 else
570 scu->flags &= ~FLAG_DEBUG;
571
572 switch(minor(dev) & FRMT_MASK) {
573 case FRMT_PBM:
574 scu->flags |= PBM_MODE;
575 lprintf("asc%d.open: pbm mode\n", unit);
576 break;
577 case FRMT_RAW:
578 lprintf("asc%d.open: raw mode\n", unit);
579 scu->flags &= ~PBM_MODE;
580 break;
581 default:
582 lprintf("asc%d.open: gray maps are not yet supported", unit);
583 return ENXIO;
584 }
585
586 lprintf("asc%d.open: minor %d icnt %ld\n", unit, minor(dev), scu->icnt);
587
588 if ( scu->flags & OPEN ) {
589 lprintf("asc%d.open: already open", unit);
590 return EBUSY;
591 }
592 if (isa_dma_acquire(scu->dma_num))
593 return(EBUSY);
594
595 scu->flags = ATTACHED | OPEN;
596
597 asc_reset(scu);
598 get_resolution(scu);
599 return SUCCESS;
600}
601
602static int
603asc_startread(struct asc_unit *scu)
604{
605 /*** from here on, things can be delayed to the first read/ioctl ***/
606 /*** this was done in sub_12... ***/
607 scu->cfg_byte= scu->cmd_byte=0; /* init scanner */
608 outb(ASC_CMD, scu->cmd_byte);
609 /*** this was done in sub_16, set scan len... ***/
610 outb(ASC_BOH, scu->portf_byte );
611 if (geomtab[scu->geometry].g_res==0) { /* color */
612 scu->cmd_byte = 0x00 ;
613 } else {
614 scu->cmd_byte = 0x90 ;
615 }
616 outb(ASC_CMD, scu->cmd_byte);
617 outb(ASC_LEN_L, scu->linesize & 0xff /* len_low */);
618 outb(ASC_LEN_H, (scu->linesize >>8) & 0xff /* len_high */);
619 /*** this was done in sub_21, config DMA ... ***/
620 scu->cfg_byte |= scu->dma_byte;
621 outb(ASC_CFG, scu->cfg_byte);
622 /*** sub_22: enable int on the scanner ***/
623 scu->cfg_byte |= scu->int_byte;
624 outb(ASC_CFG, scu->cfg_byte);
625 /*** sub_28: light on etc...***/
626 scu->cmd_byte = ASC_STANDBY;
627 outb(ASC_CMD, scu->cmd_byte);
377d4740 628 tsleep((caddr_t)scu, PCATCH, "ascstrd", hz/10); /* sleep .1 sec */
984263bc
MD
629 return SUCCESS;
630}
631
632/**************************************************************************
633 ***
634 *** ascclose
635 *** turn off scanner, release the buffer
636 *** should probably terminate dma ops, release int and dma. lr 12mar95
637 ***/
638
639STATIC int
640ascclose(dev_t dev, int flags, int fmt, struct proc *p)
641{
642 int unit = UNIT(minor(dev));
643 struct asc_unit *scu = unittab + unit;
644
645 lprintf("asc%d.close: minor %d\n",
646 unit, minor(dev));
647
648 if ( unit >= NASC || !( scu->flags & ATTACHED ) ) {
649 lprintf("asc%d.close: unit was not attached successfully 0x%04x\n",
650 unit, scu->flags);
651 return ENXIO;
652 }
653 /* all this is in sub_29... */
654 /* cli(); */
655 outb(ASC_CFG, 0 ); /* don't save in CFG byte!!! */
656 scu->cmd_byte &= ~ASC_LIGHT_ON;
657 outb(ASC_CMD, scu->cmd_byte);/* light off */
377d4740 658 tsleep((caddr_t)scu, PCATCH, "ascclo", hz/2); /* sleep 1/2 sec */
984263bc
MD
659 scu->cfg_byte &= ~ scu->dma_byte ; /* disable scanner dma */
660 scu->cfg_byte &= ~ scu->int_byte ; /* disable scanner int */
661 outb(ASC_CFG, scu->cfg_byte);
662 /* --- disable dma controller ? --- */
663 isa_dma_release(scu->dma_num);
664 /* --- disable interrupts on the controller (sub_24) --- */
665
666 scu->sbuf.size = INVALID;
667 scu->sbuf.rptr = INVALID;
668
669 scu->flags &= ~(FLAG_DEBUG | OPEN | READING);
670
671 return SUCCESS;
672}
673
674static void
675pbm_init(struct asc_unit *scu)
676{
677 int width = geomtab[scu->geometry].dpl;
678 int l= sprintf(scu->sbuf.base,"P4 %d %d\n", width, scu->height);
679 char *p;
680
681 scu->bcount = scu->height * width / 8 + l;
682
683 /* move header to end of sbuf */
684 scu->sbuf.rptr=scu->sbuf.size-l;
685 bcopy(scu->sbuf.base, scu->sbuf.base+scu->sbuf.rptr,l);
686 scu->sbuf.count = l;
687 if (geomtab[scu->geometry].g_res!=0) { /* BW scanner */
688 for(p = scu->sbuf.base + scu->sbuf.rptr; l; p++, l--)
689 *p = ~*p;
690}
691}
692/**************************************************************************
693 ***
694 *** ascread
695 ***/
696
697STATIC int
698ascread(dev_t dev, struct uio *uio, int ioflag)
699{
700 int unit = UNIT(minor(dev));
701 struct asc_unit *scu = unittab + unit;
702 size_t nbytes;
703 int sps, res;
704 unsigned char *p;
705
706 lprintf("asc%d.read: minor %d icnt %ld\n", unit, minor(dev), scu->icnt);
707
708 if ( unit >= NASC || !( scu->flags & ATTACHED ) ) {
709 lprintf("asc%d.read: unit was not attached successfully 0x%04x\n",
710 unit, scu->flags);
711 return ENXIO;
712 }
713
714 if ( !(scu->flags & READING) ) { /*** first read... ***/
715 /* allocate a buffer for reading data and init things */
716 if ( (res = buffer_allocate(scu)) == SUCCESS ) scu->flags |= READING;
717 else return res;
718 asc_startread(scu);
719 if ( scu->flags & PBM_MODE ) { /* initialize for pbm mode */
720 pbm_init(scu);
721 }
722 }
723
724 lprintf("asc%d.read(before): "
725 "sz 0x%x, rptr 0x%x, wptr 0x%x, cnt 0x%x bcnt 0x%x flags 0x%x icnt %ld\n",
726 unit, scu->sbuf.size, scu->sbuf.rptr,
727 scu->sbuf.wptr, scu->sbuf.count, scu->bcount,scu->flags,
728 scu->icnt);
729
730 sps=spltty();
731 if ( scu->sbuf.count == 0 ) { /* no data avail., must wait */
732 if (!(scu->flags & DMA_ACTIVE)) dma_restart(scu);
733 scu->flags |= SLEEPING;
377d4740 734 res = tsleep((caddr_t)scu, PCATCH, "ascread", 0);
984263bc
MD
735 scu->flags &= ~SLEEPING;
736 if ( res == 0 ) res = SUCCESS;
737 }
738 splx(sps); /* lower priority... */
739 if (scu->flags & FLAG_DEBUG)
377d4740 740 tsleep((caddr_t)scu, PCATCH, "ascdly",hz);
984263bc
MD
741 lprintf("asc%d.read(after): "
742 "sz 0x%x, rptr 0x%x, wptr 0x%x, cnt 0x%x bcnt 0x%x flags 0x%x icnt %ld\n",
743 unit, scu->sbuf.size, scu->sbuf.rptr,
744 scu->sbuf.wptr, scu->sbuf.count, scu->bcount,scu->flags,scu->icnt);
745
746 /* first, not more than available... */
747 nbytes = min( uio->uio_resid, scu->sbuf.count );
748 /* second, contiguous data... */
749 nbytes = min( nbytes, (scu->sbuf.size - scu->sbuf.rptr) );
750 /* third, one line (will remove this later, XXX) */
751 nbytes = min( nbytes, scu->linesize );
752 if ( (scu->flags & PBM_MODE) )
753 nbytes = min( nbytes, scu->bcount );
754 lprintf("asc%d.read: transferring 0x%x bytes\n", unit, nbytes);
755 if (geomtab[scu->geometry].g_res!=0) { /* BW scanner */
756 lprintf("asc%d.read: invert buffer\n",unit);
757 for(p = scu->sbuf.base + scu->sbuf.rptr, res=nbytes; res; p++, res--)
758 *p = ~*p;
759 }
760 res = uiomove(scu->sbuf.base + scu->sbuf.rptr, nbytes, uio);
761 if ( res != SUCCESS ) {
762 lprintf("asc%d.read: uiomove failed %d", unit, res);
763 return res;
764 }
765
766 sps=spltty();
767 scu->sbuf.rptr += nbytes;
768 if (scu->sbuf.rptr >= scu->sbuf.size) scu->sbuf.rptr=0;
769 scu->sbuf.count -= nbytes;
770 /* having moved some data, can read mode */
771 if (!(scu->flags & DMA_ACTIVE)) dma_restart(scu);
772 splx(sps); /* lower priority... */
773 if ( scu->flags & PBM_MODE ) scu->bcount -= nbytes;
774
775 lprintf("asc%d.read: size 0x%x, pointer 0x%x, bcount 0x%x, ok\n",
776 unit, scu->sbuf.size, scu->sbuf.rptr, scu->bcount);
777
778 return SUCCESS;
779}
780
781/**************************************************************************
782 ***
783 *** ascioctl
784 ***/
785
786STATIC int
787ascioctl(dev_t dev, u_long cmd, caddr_t data, int flags, struct proc *p)
788{
789 int unit = UNIT(minor(dev));
790 struct asc_unit *scu = unittab + unit;
791
792 lprintf("asc%d.ioctl: minor %d\n",
793 unit, minor(dev));
794
795 if ( unit >= NASC || !( scu->flags & ATTACHED ) ) {
796 lprintf("asc%d.ioctl: unit was not attached successfully 0x%04x\n",
797 unit, scu->flags);
798 return ENXIO;
799 }
800 switch(cmd) {
801 case ASC_GRES:
802 asc_reset(scu);
803 get_resolution(scu);
804 *(int *)data=geomtab[scu->geometry].dpi;
805 lprintf("asc%d.ioctl:ASC_GRES %ddpi\n", unit, *(int *)data);
806 return SUCCESS;
807 case ASC_GWIDTH:
808 *(int *)data=geomtab[scu->geometry].dpl;
809 lprintf("asc%d.ioctl:ASC_GWIDTH %d\n", unit, *(int *)data);
810 return SUCCESS;
811 case ASC_GHEIGHT:
812 *(int *)data=scu->height;
813 lprintf("asc%d.ioctl:ASC_GHEIGHT %d\n", unit, *(int *)data);
814 return SUCCESS;
815 case ASC_SHEIGHT:
816 lprintf("asc%d.ioctl:ASC_SHEIGHT %d\n", unit, *(int *)data);
817 if ( scu->flags & READING ) {
818 lprintf("asc%d:ioctl on already reading unit\n", unit);
819 return EBUSY;
820 }
821 scu->height=*(int *)data;
822 return SUCCESS;
823#if 0
824 case ASC_GBLEN:
825 *(int *)data=scu->blen;
826 lprintf("asc%d.ioctl:ASC_GBLEN %d\n", unit, *(int *)data);
827 return SUCCESS;
828 case ASC_SBLEN:
829 lprintf("asc%d.ioctl:ASC_SBLEN %d\n", unit, *(int *)data);
830 if (*(int *)data * geomtab[scu->geometry].dpl / 8 > MAX_BUFSIZE)
831 {
832 lprintf("asc%d:ioctl buffer size too high\n", unit);
833 return ENOMEM;
834 }
835 scu->blen=*(int *)data;
836 return SUCCESS;
837 case ASC_GBTIME:
838 *(int *)data = scu->btime / hz;
839 lprintf("asc%d.ioctl:ASC_GBTIME %d\n", unit, *(int *)data);
840 return SUCCESS;
841 case ASC_SBTIME:
842 scu->btime = *(int *)data * hz;
843 lprintf("asc%d.ioctl:ASC_SBTIME %d\n", unit, *(int *)data);
844 return SUCCESS;
845#endif
846 default: return ENOTTY;
847 }
848 return SUCCESS;
849}
850
851STATIC int
852ascpoll(dev_t dev, int events, struct proc *p)
853{
854 int unit = UNIT(minor(dev));
855 struct asc_unit *scu = unittab + unit;
856 int sps;
857 struct proc *p1;
858 int revents = 0;
859
860 sps=spltty();
861
862 if (events & (POLLIN | POLLRDNORM)) {
863 if (scu->sbuf.count >0)
864 revents |= events & (POLLIN | POLLRDNORM);
865 else {
866 if (!(scu->flags & DMA_ACTIVE))
867 dma_restart(scu);
868
869 if (scu->selp.si_pid && (p1=pfind(scu->selp.si_pid))
870 && p1->p_wchan == (caddr_t)&selwait)
871 scu->selp.si_flags = SI_COLL;
872 else
873 scu->selp.si_pid = p->p_pid;
874 }
875 }
876 splx(sps);
877 return (revents);
878}