Fix a minor bug that prevented compilation.
[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 $
9183fa5b 38 * $DragonFly: src/sys/platform/pc32/isa/asc.c,v 1.13 2006/06/10 20:00:17 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>
9183fa5b 50#include <sys/selinfo.h>
984263bc 51#include <sys/uio.h>
9acd5bbb 52#include <sys/thread2.h>
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53
54#include <machine/asc_ioctl.h>
55
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56#include <bus/isa/i386/isa.h>
57#include <bus/isa/i386/isa_device.h>
58#include "ascreg.h"
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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 */
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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
1b51b0fa 180static void ascintr(void *);
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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 = {
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191 /* name */ "asc",
192 /* maj */ CDEV_MAJOR,
193 /* flags */ 0,
194 /* port */ NULL,
455fcd7e 195 /* clone */ NULL,
fabb8ceb 196
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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
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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);
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229 for(delay= 100; (res=inb(ASC_STAT)) & ASC_RDY_FLAG; delay--)
230 {
377d4740 231 i = tsleep((caddr_t)scu, PCATCH, "ascres0", 1);
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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 */
10f3fee5 305 isa_dmastart(BUF_CMD_READ, 0, scu->sbuf.base+scu->sbuf.wptr,
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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 */
10f3fee5 318 isa_dmastart(BUF_CMD_READ, 0, scu->sbuf.base+scu->sbuf.wptr,
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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 */
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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;
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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
1b51b0fa 456 isdp->id_intr = (inthand2_t *)ascintr;
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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);
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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
477d3c1c 500ascintr(void *arg)
984263bc 501{
1b51b0fa 502 int unit = (int)arg;
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503 struct asc_unit *scu = unittab + unit;
504 int chan_bit = 0x01 << scu->dma_num;
505
506 scu->icnt++;
507 /* ignore stray interrupts... */
508 if ((scu->flags & (OPEN |READING)) != (OPEN | READING) ) {
509 /* must be after closing... */
510 scu->flags &= ~(OPEN | READING | DMA_ACTIVE | SLEEPING | SEL_COLL);
511 return;
512 }
513 if ( (scu->flags & DMA_ACTIVE) && (inb(DMA1_READY) & chan_bit) != 0) {
514 outb( ASC_CMD, ASC_STANDBY);
515 scu->flags &= ~DMA_ACTIVE;
516 /* bounce buffers... */
10f3fee5 517 isa_dmadone(BUF_CMD_READ, 0, scu->sbuf.base+scu->sbuf.wptr,
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518 scu->linesize, scu->dma_num);
519 scu->sbuf.wptr += scu->linesize;
520 if (scu->sbuf.wptr >= scu->sbuf.size) scu->sbuf.wptr=0;
521 scu->sbuf.count += scu->linesize;
522 if (scu->flags & SLEEPING) {
523 scu->flags &= ~SLEEPING;
524 wakeup((caddr_t)scu);
525 }
526 if (scu->sbuf.size - scu->sbuf.count >= scu->linesize) {
527 dma_restart(scu);
528 }
529 if (scu->selp.si_pid) {
530 selwakeup(&scu->selp);
531 scu->selp.si_pid=(pid_t)0;
532 scu->selp.si_flags = 0;
533 }
534 }
535}
536
537/**************************************************************************
538 ***
539 *** ascopen
540 *** set open flag, set modes according to minor number
541 *** FOR RELEASE:
542 *** don't switch scanner on, wait until first read or ioctls go before
543 ***/
544
545STATIC int
7b95be2a 546ascopen(dev_t dev, int flags, int fmt, struct thread *td)
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547{
548 struct asc_unit *scu;
549 int unit;
550
551 unit = UNIT(minor(dev)) & UNIT_MASK;
552 if ( unit >= NASC )
553 {
554#ifdef ASCDEBUG
555 /* XXX lprintf isn't valid here since there is no scu. */
556 printf("asc%d.open: unconfigured unit number (max %d)\n", unit, NASC);
557#endif
558 return ENXIO;
559 }
560 scu = unittab + unit;
561 if ( !( scu->flags & ATTACHED ) )
562 {
563 lprintf("asc%d.open: unit was not attached successfully 0x%04x\n",
564 unit, scu->flags);
565 return ENXIO;
566 }
567
568 if ( minor(dev) & DBUG_MASK )
569 scu->flags |= FLAG_DEBUG;
570 else
571 scu->flags &= ~FLAG_DEBUG;
572
573 switch(minor(dev) & FRMT_MASK) {
574 case FRMT_PBM:
575 scu->flags |= PBM_MODE;
576 lprintf("asc%d.open: pbm mode\n", unit);
577 break;
578 case FRMT_RAW:
579 lprintf("asc%d.open: raw mode\n", unit);
580 scu->flags &= ~PBM_MODE;
581 break;
582 default:
583 lprintf("asc%d.open: gray maps are not yet supported", unit);
584 return ENXIO;
585 }
586
587 lprintf("asc%d.open: minor %d icnt %ld\n", unit, minor(dev), scu->icnt);
588
589 if ( scu->flags & OPEN ) {
590 lprintf("asc%d.open: already open", unit);
591 return EBUSY;
592 }
593 if (isa_dma_acquire(scu->dma_num))
594 return(EBUSY);
595
596 scu->flags = ATTACHED | OPEN;
597
598 asc_reset(scu);
599 get_resolution(scu);
600 return SUCCESS;
601}
602
603static int
604asc_startread(struct asc_unit *scu)
605{
606 /*** from here on, things can be delayed to the first read/ioctl ***/
607 /*** this was done in sub_12... ***/
608 scu->cfg_byte= scu->cmd_byte=0; /* init scanner */
609 outb(ASC_CMD, scu->cmd_byte);
610 /*** this was done in sub_16, set scan len... ***/
611 outb(ASC_BOH, scu->portf_byte );
612 if (geomtab[scu->geometry].g_res==0) { /* color */
613 scu->cmd_byte = 0x00 ;
614 } else {
615 scu->cmd_byte = 0x90 ;
616 }
617 outb(ASC_CMD, scu->cmd_byte);
618 outb(ASC_LEN_L, scu->linesize & 0xff /* len_low */);
619 outb(ASC_LEN_H, (scu->linesize >>8) & 0xff /* len_high */);
620 /*** this was done in sub_21, config DMA ... ***/
621 scu->cfg_byte |= scu->dma_byte;
622 outb(ASC_CFG, scu->cfg_byte);
623 /*** sub_22: enable int on the scanner ***/
624 scu->cfg_byte |= scu->int_byte;
625 outb(ASC_CFG, scu->cfg_byte);
626 /*** sub_28: light on etc...***/
627 scu->cmd_byte = ASC_STANDBY;
628 outb(ASC_CMD, scu->cmd_byte);
377d4740 629 tsleep((caddr_t)scu, PCATCH, "ascstrd", hz/10); /* sleep .1 sec */
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630 return SUCCESS;
631}
632
633/**************************************************************************
634 ***
635 *** ascclose
636 *** turn off scanner, release the buffer
637 *** should probably terminate dma ops, release int and dma. lr 12mar95
638 ***/
639
640STATIC int
7b95be2a 641ascclose(dev_t dev, int flags, int fmt, struct thread *td)
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642{
643 int unit = UNIT(minor(dev));
644 struct asc_unit *scu = unittab + unit;
645
646 lprintf("asc%d.close: minor %d\n",
647 unit, minor(dev));
648
649 if ( unit >= NASC || !( scu->flags & ATTACHED ) ) {
650 lprintf("asc%d.close: unit was not attached successfully 0x%04x\n",
651 unit, scu->flags);
652 return ENXIO;
653 }
654 /* all this is in sub_29... */
655 /* cli(); */
656 outb(ASC_CFG, 0 ); /* don't save in CFG byte!!! */
657 scu->cmd_byte &= ~ASC_LIGHT_ON;
658 outb(ASC_CMD, scu->cmd_byte);/* light off */
377d4740 659 tsleep((caddr_t)scu, PCATCH, "ascclo", hz/2); /* sleep 1/2 sec */
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660 scu->cfg_byte &= ~ scu->dma_byte ; /* disable scanner dma */
661 scu->cfg_byte &= ~ scu->int_byte ; /* disable scanner int */
662 outb(ASC_CFG, scu->cfg_byte);
663 /* --- disable dma controller ? --- */
664 isa_dma_release(scu->dma_num);
665 /* --- disable interrupts on the controller (sub_24) --- */
666
667 scu->sbuf.size = INVALID;
668 scu->sbuf.rptr = INVALID;
669
670 scu->flags &= ~(FLAG_DEBUG | OPEN | READING);
671
672 return SUCCESS;
673}
674
675static void
676pbm_init(struct asc_unit *scu)
677{
678 int width = geomtab[scu->geometry].dpl;
679 int l= sprintf(scu->sbuf.base,"P4 %d %d\n", width, scu->height);
680 char *p;
681
682 scu->bcount = scu->height * width / 8 + l;
683
684 /* move header to end of sbuf */
685 scu->sbuf.rptr=scu->sbuf.size-l;
686 bcopy(scu->sbuf.base, scu->sbuf.base+scu->sbuf.rptr,l);
687 scu->sbuf.count = l;
688 if (geomtab[scu->geometry].g_res!=0) { /* BW scanner */
689 for(p = scu->sbuf.base + scu->sbuf.rptr; l; p++, l--)
690 *p = ~*p;
691}
692}
693/**************************************************************************
694 ***
695 *** ascread
696 ***/
697
698STATIC int
699ascread(dev_t dev, struct uio *uio, int ioflag)
700{
701 int unit = UNIT(minor(dev));
702 struct asc_unit *scu = unittab + unit;
703 size_t nbytes;
9acd5bbb 704 int res;
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705 unsigned char *p;
706
707 lprintf("asc%d.read: minor %d icnt %ld\n", unit, minor(dev), scu->icnt);
708
709 if ( unit >= NASC || !( scu->flags & ATTACHED ) ) {
710 lprintf("asc%d.read: unit was not attached successfully 0x%04x\n",
711 unit, scu->flags);
712 return ENXIO;
713 }
714
715 if ( !(scu->flags & READING) ) { /*** first read... ***/
716 /* allocate a buffer for reading data and init things */
717 if ( (res = buffer_allocate(scu)) == SUCCESS ) scu->flags |= READING;
718 else return res;
719 asc_startread(scu);
720 if ( scu->flags & PBM_MODE ) { /* initialize for pbm mode */
721 pbm_init(scu);
722 }
723 }
724
725 lprintf("asc%d.read(before): "
726 "sz 0x%x, rptr 0x%x, wptr 0x%x, cnt 0x%x bcnt 0x%x flags 0x%x icnt %ld\n",
727 unit, scu->sbuf.size, scu->sbuf.rptr,
728 scu->sbuf.wptr, scu->sbuf.count, scu->bcount,scu->flags,
729 scu->icnt);
730
9acd5bbb 731 crit_enter();
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732 if ( scu->sbuf.count == 0 ) { /* no data avail., must wait */
733 if (!(scu->flags & DMA_ACTIVE)) dma_restart(scu);
734 scu->flags |= SLEEPING;
377d4740 735 res = tsleep((caddr_t)scu, PCATCH, "ascread", 0);
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736 scu->flags &= ~SLEEPING;
737 if ( res == 0 ) res = SUCCESS;
738 }
9acd5bbb 739 crit_exit();
984263bc 740 if (scu->flags & FLAG_DEBUG)
377d4740 741 tsleep((caddr_t)scu, PCATCH, "ascdly",hz);
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742 lprintf("asc%d.read(after): "
743 "sz 0x%x, rptr 0x%x, wptr 0x%x, cnt 0x%x bcnt 0x%x flags 0x%x icnt %ld\n",
744 unit, scu->sbuf.size, scu->sbuf.rptr,
745 scu->sbuf.wptr, scu->sbuf.count, scu->bcount,scu->flags,scu->icnt);
746
747 /* first, not more than available... */
748 nbytes = min( uio->uio_resid, scu->sbuf.count );
749 /* second, contiguous data... */
750 nbytes = min( nbytes, (scu->sbuf.size - scu->sbuf.rptr) );
751 /* third, one line (will remove this later, XXX) */
752 nbytes = min( nbytes, scu->linesize );
753 if ( (scu->flags & PBM_MODE) )
754 nbytes = min( nbytes, scu->bcount );
755 lprintf("asc%d.read: transferring 0x%x bytes\n", unit, nbytes);
756 if (geomtab[scu->geometry].g_res!=0) { /* BW scanner */
757 lprintf("asc%d.read: invert buffer\n",unit);
758 for(p = scu->sbuf.base + scu->sbuf.rptr, res=nbytes; res; p++, res--)
759 *p = ~*p;
760 }
761 res = uiomove(scu->sbuf.base + scu->sbuf.rptr, nbytes, uio);
762 if ( res != SUCCESS ) {
763 lprintf("asc%d.read: uiomove failed %d", unit, res);
764 return res;
765 }
766
9acd5bbb 767 crit_enter();
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768 scu->sbuf.rptr += nbytes;
769 if (scu->sbuf.rptr >= scu->sbuf.size) scu->sbuf.rptr=0;
770 scu->sbuf.count -= nbytes;
771 /* having moved some data, can read mode */
772 if (!(scu->flags & DMA_ACTIVE)) dma_restart(scu);
9acd5bbb 773 crit_exit();
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774 if ( scu->flags & PBM_MODE ) scu->bcount -= nbytes;
775
776 lprintf("asc%d.read: size 0x%x, pointer 0x%x, bcount 0x%x, ok\n",
777 unit, scu->sbuf.size, scu->sbuf.rptr, scu->bcount);
778
779 return SUCCESS;
780}
781
782/**************************************************************************
783 ***
784 *** ascioctl
785 ***/
786
787STATIC int
7b95be2a 788ascioctl(dev_t dev, u_long cmd, caddr_t data, int flags, struct thread *td)
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789{
790 int unit = UNIT(minor(dev));
791 struct asc_unit *scu = unittab + unit;
792
793 lprintf("asc%d.ioctl: minor %d\n",
794 unit, minor(dev));
795
796 if ( unit >= NASC || !( scu->flags & ATTACHED ) ) {
797 lprintf("asc%d.ioctl: unit was not attached successfully 0x%04x\n",
798 unit, scu->flags);
799 return ENXIO;
800 }
801 switch(cmd) {
802 case ASC_GRES:
803 asc_reset(scu);
804 get_resolution(scu);
805 *(int *)data=geomtab[scu->geometry].dpi;
806 lprintf("asc%d.ioctl:ASC_GRES %ddpi\n", unit, *(int *)data);
807 return SUCCESS;
808 case ASC_GWIDTH:
809 *(int *)data=geomtab[scu->geometry].dpl;
810 lprintf("asc%d.ioctl:ASC_GWIDTH %d\n", unit, *(int *)data);
811 return SUCCESS;
812 case ASC_GHEIGHT:
813 *(int *)data=scu->height;
814 lprintf("asc%d.ioctl:ASC_GHEIGHT %d\n", unit, *(int *)data);
815 return SUCCESS;
816 case ASC_SHEIGHT:
817 lprintf("asc%d.ioctl:ASC_SHEIGHT %d\n", unit, *(int *)data);
818 if ( scu->flags & READING ) {
819 lprintf("asc%d:ioctl on already reading unit\n", unit);
820 return EBUSY;
821 }
822 scu->height=*(int *)data;
823 return SUCCESS;
824#if 0
825 case ASC_GBLEN:
826 *(int *)data=scu->blen;
827 lprintf("asc%d.ioctl:ASC_GBLEN %d\n", unit, *(int *)data);
828 return SUCCESS;
829 case ASC_SBLEN:
830 lprintf("asc%d.ioctl:ASC_SBLEN %d\n", unit, *(int *)data);
831 if (*(int *)data * geomtab[scu->geometry].dpl / 8 > MAX_BUFSIZE)
832 {
833 lprintf("asc%d:ioctl buffer size too high\n", unit);
834 return ENOMEM;
835 }
836 scu->blen=*(int *)data;
837 return SUCCESS;
838 case ASC_GBTIME:
839 *(int *)data = scu->btime / hz;
840 lprintf("asc%d.ioctl:ASC_GBTIME %d\n", unit, *(int *)data);
841 return SUCCESS;
842 case ASC_SBTIME:
843 scu->btime = *(int *)data * hz;
844 lprintf("asc%d.ioctl:ASC_SBTIME %d\n", unit, *(int *)data);
845 return SUCCESS;
846#endif
847 default: return ENOTTY;
848 }
849 return SUCCESS;
850}
851
852STATIC int
7b95be2a 853ascpoll(dev_t dev, int events, struct thread *td)
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854{
855 int unit = UNIT(minor(dev));
856 struct asc_unit *scu = unittab + unit;
7b95be2a 857 struct proc *p;
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858 struct proc *p1;
859 int revents = 0;
860
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861 p = td->td_proc;
862 KKASSERT(p);
863
9acd5bbb 864 crit_enter();
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865
866 if (events & (POLLIN | POLLRDNORM)) {
867 if (scu->sbuf.count >0)
868 revents |= events & (POLLIN | POLLRDNORM);
869 else {
870 if (!(scu->flags & DMA_ACTIVE))
871 dma_restart(scu);
872
873 if (scu->selp.si_pid && (p1=pfind(scu->selp.si_pid))
874 && p1->p_wchan == (caddr_t)&selwait)
875 scu->selp.si_flags = SI_COLL;
876 else
877 scu->selp.si_pid = p->p_pid;
878 }
879 }
9acd5bbb 880 crit_exit();
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881 return (revents);
882}