put pthread_timedjoin_np in right order.
[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 $
9acd5bbb 38 * $DragonFly: src/sys/platform/pc32/isa/asc.c,v 1.9 2005/06/03 17:14:51 dillon Exp $
984263bc
MD
39 */
40
1f2de5d4 41#include "use_asc.h"
984263bc
MD
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>
9acd5bbb 52#include <sys/thread2.h>
984263bc
MD
53
54#include <machine/asc_ioctl.h>
55
1f2de5d4
MD
56#include <bus/isa/i386/isa.h>
57#include <bus/isa/i386/isa_device.h>
58#include "ascreg.h"
984263bc
MD
59
60/***
61 *** CONSTANTS & DEFINES
62 ***
63 ***/
64
65#define PROBE_FAIL 0
66#define PROBE_SUCCESS IO_ASCSIZE
67#define ATTACH_FAIL 0
68#define ATTACH_SUCCESS 1
69#define SUCCESS 0
70#define FAIL -1
71#define INVALID FAIL
72
73#define DMA1_READY 0x08
74#define ASCDEBUG
75#ifdef ASCDEBUG
76# define lprintf if(scu->flags & FLAG_DEBUG) printf
77#else
78# define lprintf (void)
79#endif
80
81#define TIMEOUT (hz*15) /* timeout while reading a buffer - default value */
984263bc
MD
82
83/***
84 *** LAYOUT OF THE MINOR NUMBER
85 ***/
86
87#define UNIT_MASK 0xc0 /* unit asc0 .. asc3 */
88#define UNIT(x) (x >> 6)
89#define DBUG_MASK 0x20
90#define FRMT_MASK 0x18 /* output format */
91#define FRMT_RAW 0x00 /* output bits as read from scanner */
92#define FRMT_GRAY 0x1 /* output gray mode for color scanner */
93#define FRMT_PBM 0x08 /* output pbm format */
94#define FRMT_PGM 0x18
95
96/***
97 *** THE GEMOMETRY TABLE
98 ***/
99
100#define GREY_LINE 826 /* 825, or 826 , or 550 ??? */
101static const struct asc_geom {
102 int dpi; /* dots per inch */
103 int dpl; /* dots per line */
104 int bpl; /* bytes per line */
105 int g_res; /* get resolution value (ASC_STAT) */
106} geomtab[] = {
107 { 800, 3312, 414, ASC_RES_800},
108 { 700, 2896, 362, ASC_RES_700},
109 { 600, 2480, 310, ASC_RES_600},
110 { 500, 1656, 258, ASC_RES_500},
111 { 400, 1656, 207, ASC_RES_400},
112 { 300, 1240, 155, ASC_RES_300},
113 { 200, 832, 104, ASC_RES_200},
114 { 100, 416, 52, ASC_RES_100},
115 { 200, 3*GREY_LINE, 3*GREY_LINE, 0 /* returned by color scanner */},
116 { 200, GREY_LINE, GREY_LINE, 0 /* color scanner, grey mode */},
117 { INVALID, 416, 52, INVALID } /* terminator */
118};
119
120/***
121 *** THE TABLE OF UNITS
122 ***/
123
124struct _sbuf {
125 size_t size;
126 size_t rptr;
127 size_t wptr; /* only changed in ascintr */
128 size_t count;
129 char *base;
130};
131
132struct asc_unit {
133 long thedev; /* XXX */
134 int base; /* base address */
135 int dma_num; /* dma number */
136 char dma_byte; /* mask of byte for setting DMA value */
137 char int_byte; /* mask of byte for setting int value */
138 char cfg_byte; /* mirror of byte written to config reg (ASC_CFG). */
139 char cmd_byte; /* mirror of byte written to cmd port (ASC_CMD)*/
140 char portf_byte;
141 int flags;
142#define ATTACHED 0x01
143#define OPEN 0x02
144#define READING 0x04
145#define DMA_ACTIVE 0x08
146#define SLEEPING 0x10
147#define SEL_COLL 0x20
148#define PBM_MODE 0x40
149#define FLAG_DEBUG 0x80
150 int geometry; /* resolution as geomtab index */
151 int linesize; /* length of one scan line (from geom.table) */
152 int blen; /* length of buffer in lines */
153 int btime; /* timeout of buffer in seconds/hz */
154 struct _sbuf sbuf;
155 long icnt; /* interrupt count XXX for debugging */
156 struct selinfo selp;
157 int height; /* height, for pnm modes */
158 size_t bcount; /* bytes to read, for pnm modes */
159};
160
161static struct asc_unit unittab[NASC];
162
163/*** I could not find a reasonable buffer size limit other than by
164 *** experiments. MAXPHYS is obviously too much, while DEV_BSIZE and
165 *** PAGE_SIZE are really too small. There must be something wrong
166 *** with isa_dmastart/isa_dmarangecheck HELP!!!
167 ***
168 *** Note, must be DEFAULT_BLEN * samples_per_line <= MAX_BUFSIZE
169 ***/
170#define MAX_BUFSIZE 0xb000 /* XXX was 0x3000 */
171#define DEFAULT_BLEN 16
172
173/***
174 *** THE PER-DRIVER RECORD FOR ISA.C
175 ***/
176static int ascprobe (struct isa_device *isdp);
177static int ascattach(struct isa_device *isdp);
178struct isa_driver ascdriver = { ascprobe, ascattach, "asc" };
179
180static ointhand2_t ascintr;
181
182static d_open_t ascopen;
183static d_close_t ascclose;
184static d_read_t ascread;
185static d_ioctl_t ascioctl;
186static d_poll_t ascpoll;
187
188#define CDEV_MAJOR 71
189
190static struct cdevsw asc_cdevsw = {
fabb8ceb
MD
191 /* name */ "asc",
192 /* maj */ CDEV_MAJOR,
193 /* flags */ 0,
194 /* port */ NULL,
455fcd7e 195 /* clone */ NULL,
fabb8ceb 196
984263bc
MD
197 /* open */ ascopen,
198 /* close */ ascclose,
199 /* read */ ascread,
200 /* write */ nowrite,
201 /* ioctl */ ascioctl,
202 /* poll */ ascpoll,
203 /* mmap */ nommap,
204 /* strategy */ nostrategy,
984263bc 205 /* dump */ nodump,
fabb8ceb 206 /* psize */ nopsize
984263bc
MD
207};
208
209#define STATIC static
210
211/***
212 *** LOCALLY USED SUBROUTINES
213 ***
214 ***/
215
216/***
217 *** get_resolution
218 *** read resolution from the scanner
219 ***/
220static void
221get_resolution(struct asc_unit *scu)
222{
223 int res, i, delay;
224
225 res=0;
226 scu->cmd_byte = ASC_STANDBY;
227 outb(ASC_CMD, scu->cmd_byte);
377d4740 228 tsleep((caddr_t)scu, PCATCH, "ascres", hz/10);
984263bc
MD
229 for(delay= 100; (res=inb(ASC_STAT)) & ASC_RDY_FLAG; delay--)
230 {
377d4740 231 i = tsleep((caddr_t)scu, PCATCH, "ascres0", 1);
984263bc
MD
232 if ( ( i == 0 ) || ( i == EWOULDBLOCK ) )
233 i = SUCCESS;
234 else
235 break;
236 }
237 if (delay==0) {
238 lprintf("asc.get_resolution: timeout completing command\n");
239 return /* -1 */;
240 }
241 /* ... actual read resolution... */
242 res &= ASC_RES_MASK;
243 for (i=0; geomtab[i].dpi != INVALID; i++) {
244 if (geomtab[i].g_res == res) break;
245 }
246 if (geomtab[i].dpi==INVALID) {
247 scu->geometry= i; /* INVALID; */
248 lprintf("asc.get_resolution: wrong resolution\n");
249 } else {
250 lprintf("asc.get_resolution: %d dpi\n",geomtab[i].dpi);
251 scu->geometry = i;
252 }
253 scu->portf_byte=0; /* default */
254 if (geomtab[scu->geometry].g_res==0 && !(scu->thedev&FRMT_GRAY)) {
255 /* color scanner seems to require this */
256 scu->portf_byte=2;
257 /* scu->geometry++; */
258 }
259 scu->linesize = geomtab[scu->geometry].bpl;
260 scu->height = geomtab[scu->geometry].dpl; /* default... */
261}
262
263/***
264 *** buffer_allocate
265 *** allocate/reallocate a buffer
266 *** Now just checks that the preallocated buffer is large enough.
267 ***/
268
269static int
270buffer_allocate(struct asc_unit *scu)
271{
272 size_t size, size1;
273
274 size = scu->blen * scu->linesize;
275
276 lprintf("asc.buffer_allocate: need 0x%x bytes\n", size);
277
278 if ( size > MAX_BUFSIZE ) {
279 size1=size;
280 size= ( (MAX_BUFSIZE+scu->linesize-1) / scu->linesize)*scu->linesize;
281 lprintf("asc.buffer_allocate: 0x%x bytes are too much, try 0x%x\n",
282 size1, size);
283 return ENOMEM;
284 }
285
286 scu->sbuf.size = size;
287 scu->sbuf.rptr = 0;
288 scu->sbuf.wptr = 0;
289 scu->sbuf.count = 0; /* available data for reading */
290
291 lprintf("asc.buffer_allocate: ok\n");
292
293 return SUCCESS;
294}
295
296/*** dma_restart
297 *** invoked locally to start dma. Must run in a critical section
298 ***/
299static void
300dma_restart(struct asc_unit *scu)
301{
302 unsigned char al=scu->cmd_byte;
303
304 if (geomtab[scu->geometry].g_res==0) {/* color */
305 isa_dmastart(ISADMA_READ, scu->sbuf.base+scu->sbuf.wptr,
306 scu->linesize + 90 /* XXX */ , scu->dma_num);
307 /*
308 * looks like we have to set and then clear this
309 * bit to enable the scanner to send interrupts
310 */
311 outb( ASC_CMD, al |= 4 ); /* seems to disable interrupts */
312#if 0
313 outb( ASC_CMD, al |= 8 ); /* ??? seems useless */
314#endif
315 outb( ASC_CMD, al &= 0xfb );
316 scu->cmd_byte = al;
317 } else { /* normal */
318 isa_dmastart(ISADMA_READ, scu->sbuf.base+scu->sbuf.wptr,
319 scu->linesize, scu->dma_num);
320 /*** this is done in sub_20, after dmastart ? ***/
321#if 0
322 outb( ASC_CMD, al |= 4 );
323 outb( ASC_CMD, al |= 8 ); /* ??? seems useless */
324 outb( ASC_CMD, al &= 0xfb );
325 scu->cmd_byte = al;
326#else
327 outb( ASC_CMD, ASC_OPERATE);
328#endif
329 }
330 scu->flags |= DMA_ACTIVE;
331}
332
333/***
334 *** the main functions
335 ***/
336
337/*** asc_reset
338 *** resets the scanner and the config bytes...
339 ***/
340static void
341asc_reset(struct asc_unit *scu)
342{
343 scu->cfg_byte = 0 ; /* clear... */
344 scu->cmd_byte = 0 ; /* clear... */
345
346 outb(ASC_CFG,scu->cfg_byte); /* for safety, do this here */
347 outb(ASC_CMD,scu->cmd_byte); /* probably not needed */
377d4740 348 tsleep((caddr_t)scu, PCATCH, "ascres", hz/10); /* sleep .1 sec */
984263bc
MD
349
350 scu->blen = DEFAULT_BLEN;
351 scu->btime = TIMEOUT;
352 scu->height = 0 ; /* don't know better... */
353}
354/**************************************************************************
355 ***
356 *** ascprobe
357 *** read status port and check for proper configuration:
358 *** - if address group matches (status byte has reasonable value)
359 *** cannot check interrupt/dma, only clear the config byte.
360 ***/
361static int
362ascprobe (struct isa_device *isdp)
363{
364 int unit = isdp->id_unit;
365 struct asc_unit *scu = unittab + unit;
366 int stb;
984263bc
MD
367
368 scu->base = isdp->id_iobase; /*** needed by the following macros ***/
369 scu->flags = FLAG_DEBUG;
370
371 if ( isdp->id_iobase < 0 ) {
372 lprintf("asc%d.probe: no iobase given\n", unit);
373 return PROBE_FAIL;
374 }
375
376 if ((stb=inb(ASC_PROBE)) != ASC_PROBE_VALUE) {
377 lprintf("asc%d.probe: failed, got 0x%02x instead of 0x%02x\n",
378 unit, stb, ASC_PROBE_VALUE);
379 return PROBE_FAIL;
380 }
381
382/*
383 * NOTE NOTE NOTE
384 * the new AmiScan Color board uses int 10,11,12 instead of 3,5,10
385 * respectively. This means that the driver must act accordingly.
386 * Unfortunately there is no easy way of telling which board one has,
387 * other than trying to get an interrupt and noticing that it is
388 * missing. use "option ASC_NEW_BOARD" if you have a new board.
389 *
390 */
391
392#if ASC_NEW_BOARD
393#define ASC_IRQ_A 10
394#define ASC_IRQ_B 11
395#define ASC_IRQ_C 12
396#else
397#define ASC_IRQ_A 3
398#define ASC_IRQ_B 5
399#define ASC_IRQ_C 10
400#endif
401
402 switch(ffs(isdp->id_irq) - 1) {
403 case ASC_IRQ_A :
404 scu->int_byte = ASC_CNF_IRQ3;
405 break;
406 case ASC_IRQ_B :
407 scu->int_byte = ASC_CNF_IRQ5;
408 break;
409 case ASC_IRQ_C :
410 scu->int_byte = ASC_CNF_IRQ10;
411 break;
412#if 0
413 case -1:
414 scu->int_byte = 0;
415 lprintf("asc%d.probe: warning - going interruptless\n", unit);
416 break;
417#endif
418 default:
419 lprintf("asc%d.probe: unsupported INT %d (only 3, 5, 10)\n",
420 unit, ffs(isdp->id_irq) - 1 );
421 return PROBE_FAIL;
422 }
423 scu->dma_num = isdp->id_drq;
424 switch(scu->dma_num) {
425 case 1:
426 scu->dma_byte = ASC_CNF_DMA1;
427 break;
428 case 3:
429 scu->dma_byte = ASC_CNF_DMA3;
430 break;
431 default:
432 lprintf("asc%d.probe: unsupported DMA %d (only 1 or 3)\n",
433 unit, scu->dma_num);
434 return PROBE_FAIL;
435 }
436 asc_reset(scu);
437/* lprintf("asc%d.probe: ok\n", unit); */
438
439 scu->flags &= ~FLAG_DEBUG;
440 scu->icnt = 0;
441 return PROBE_SUCCESS;
442}
443
444/**************************************************************************
445 ***
446 *** ascattach
447 *** finish initialization of unit structure, get geometry value (?)
448 ***/
449
450static int
451ascattach(struct isa_device *isdp)
452{
453 int unit = isdp->id_unit;
454 struct asc_unit *scu = unittab + unit;
455
456 isdp->id_ointr = ascintr;
457 scu->flags |= FLAG_DEBUG;
458 printf("asc%d: [GI1904/Trust Ami-Scan Grey/Color]\n", unit);
459
460 /*
461 * Initialize buffer structure.
462 * XXX this must be done early to give a good chance of getting a
463 * contiguous buffer. This wastes memory.
464 */
465 scu->sbuf.base = contigmalloc((unsigned long)MAX_BUFSIZE, M_DEVBUF, M_NOWAIT,
466 0ul, 0xfffffful, 1ul, 0x10000ul);
467 if ( scu->sbuf.base == NULL )
468 {
469 lprintf("asc%d.attach: buffer allocation failed\n", unit);
470 return ATTACH_FAIL; /* XXX attach must not fail */
471 }
472 scu->sbuf.size = INVALID;
473 scu->sbuf.rptr = INVALID;
474
475 scu->flags |= ATTACHED;
476/* lprintf("asc%d.attach: ok\n", unit); */
477 scu->flags &= ~FLAG_DEBUG;
478
479 scu->selp.si_flags=0;
480 scu->selp.si_pid=(pid_t)0;
481#define ASC_UID 0
482#define ASC_GID 13
e4c9c0c8 483 cdevsw_add(&asc_cdevsw, 0xc0, unit << 6);
984263bc
MD
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
7b95be2a 545ascopen(dev_t dev, int flags, int fmt, struct thread *td)
984263bc
MD
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
7b95be2a 640ascclose(dev_t dev, int flags, int fmt, struct thread *td)
984263bc
MD
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;
9acd5bbb 703 int res;
984263bc
MD
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
9acd5bbb 730 crit_enter();
984263bc
MD
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 }
9acd5bbb 738 crit_exit();
984263bc 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
9acd5bbb 766 crit_enter();
984263bc
MD
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);
9acd5bbb 772 crit_exit();
984263bc
MD
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
7b95be2a 787ascioctl(dev_t dev, u_long cmd, caddr_t data, int flags, struct thread *td)
984263bc
MD
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
7b95be2a 852ascpoll(dev_t dev, int events, struct thread *td)
984263bc
MD
853{
854 int unit = UNIT(minor(dev));
855 struct asc_unit *scu = unittab + unit;
7b95be2a 856 struct proc *p;
984263bc
MD
857 struct proc *p1;
858 int revents = 0;
859
7b95be2a
MD
860 p = td->td_proc;
861 KKASSERT(p);
862
9acd5bbb 863 crit_enter();
984263bc
MD
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 }
9acd5bbb 879 crit_exit();
984263bc
MD
880 return (revents);
881}