Nuke huge mbuf macros stage 1/2: Remove massive inline mbuf macros to reduce
[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 $
1de703da 38 * $DragonFly: src/sys/platform/pc32/isa/asc.c,v 1.2 2003/06/17 04:28:36 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 */
81#define ASCPRI PRIBIO /* priority while reading a buffer */
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 = {
191 /* open */ ascopen,
192 /* close */ ascclose,
193 /* read */ ascread,
194 /* write */ nowrite,
195 /* ioctl */ ascioctl,
196 /* poll */ ascpoll,
197 /* mmap */ nommap,
198 /* strategy */ nostrategy,
199 /* name */ "asc",
200 /* maj */ CDEV_MAJOR,
201 /* dump */ nodump,
202 /* psize */ nopsize,
203 /* flags */ 0,
204 /* bmaj */ -1
205};
206
207#define STATIC static
208
209/***
210 *** LOCALLY USED SUBROUTINES
211 ***
212 ***/
213
214/***
215 *** get_resolution
216 *** read resolution from the scanner
217 ***/
218static void
219get_resolution(struct asc_unit *scu)
220{
221 int res, i, delay;
222
223 res=0;
224 scu->cmd_byte = ASC_STANDBY;
225 outb(ASC_CMD, scu->cmd_byte);
226 tsleep((caddr_t)scu, ASCPRI | PCATCH, "ascres", hz/10);
227 for(delay= 100; (res=inb(ASC_STAT)) & ASC_RDY_FLAG; delay--)
228 {
229 i = tsleep((caddr_t)scu, ASCPRI | PCATCH, "ascres0", 1);
230 if ( ( i == 0 ) || ( i == EWOULDBLOCK ) )
231 i = SUCCESS;
232 else
233 break;
234 }
235 if (delay==0) {
236 lprintf("asc.get_resolution: timeout completing command\n");
237 return /* -1 */;
238 }
239 /* ... actual read resolution... */
240 res &= ASC_RES_MASK;
241 for (i=0; geomtab[i].dpi != INVALID; i++) {
242 if (geomtab[i].g_res == res) break;
243 }
244 if (geomtab[i].dpi==INVALID) {
245 scu->geometry= i; /* INVALID; */
246 lprintf("asc.get_resolution: wrong resolution\n");
247 } else {
248 lprintf("asc.get_resolution: %d dpi\n",geomtab[i].dpi);
249 scu->geometry = i;
250 }
251 scu->portf_byte=0; /* default */
252 if (geomtab[scu->geometry].g_res==0 && !(scu->thedev&FRMT_GRAY)) {
253 /* color scanner seems to require this */
254 scu->portf_byte=2;
255 /* scu->geometry++; */
256 }
257 scu->linesize = geomtab[scu->geometry].bpl;
258 scu->height = geomtab[scu->geometry].dpl; /* default... */
259}
260
261/***
262 *** buffer_allocate
263 *** allocate/reallocate a buffer
264 *** Now just checks that the preallocated buffer is large enough.
265 ***/
266
267static int
268buffer_allocate(struct asc_unit *scu)
269{
270 size_t size, size1;
271
272 size = scu->blen * scu->linesize;
273
274 lprintf("asc.buffer_allocate: need 0x%x bytes\n", size);
275
276 if ( size > MAX_BUFSIZE ) {
277 size1=size;
278 size= ( (MAX_BUFSIZE+scu->linesize-1) / scu->linesize)*scu->linesize;
279 lprintf("asc.buffer_allocate: 0x%x bytes are too much, try 0x%x\n",
280 size1, size);
281 return ENOMEM;
282 }
283
284 scu->sbuf.size = size;
285 scu->sbuf.rptr = 0;
286 scu->sbuf.wptr = 0;
287 scu->sbuf.count = 0; /* available data for reading */
288
289 lprintf("asc.buffer_allocate: ok\n");
290
291 return SUCCESS;
292}
293
294/*** dma_restart
295 *** invoked locally to start dma. Must run in a critical section
296 ***/
297static void
298dma_restart(struct asc_unit *scu)
299{
300 unsigned char al=scu->cmd_byte;
301
302 if (geomtab[scu->geometry].g_res==0) {/* color */
303 isa_dmastart(ISADMA_READ, scu->sbuf.base+scu->sbuf.wptr,
304 scu->linesize + 90 /* XXX */ , scu->dma_num);
305 /*
306 * looks like we have to set and then clear this
307 * bit to enable the scanner to send interrupts
308 */
309 outb( ASC_CMD, al |= 4 ); /* seems to disable interrupts */
310#if 0
311 outb( ASC_CMD, al |= 8 ); /* ??? seems useless */
312#endif
313 outb( ASC_CMD, al &= 0xfb );
314 scu->cmd_byte = al;
315 } else { /* normal */
316 isa_dmastart(ISADMA_READ, scu->sbuf.base+scu->sbuf.wptr,
317 scu->linesize, scu->dma_num);
318 /*** this is done in sub_20, after dmastart ? ***/
319#if 0
320 outb( ASC_CMD, al |= 4 );
321 outb( ASC_CMD, al |= 8 ); /* ??? seems useless */
322 outb( ASC_CMD, al &= 0xfb );
323 scu->cmd_byte = al;
324#else
325 outb( ASC_CMD, ASC_OPERATE);
326#endif
327 }
328 scu->flags |= DMA_ACTIVE;
329}
330
331/***
332 *** the main functions
333 ***/
334
335/*** asc_reset
336 *** resets the scanner and the config bytes...
337 ***/
338static void
339asc_reset(struct asc_unit *scu)
340{
341 scu->cfg_byte = 0 ; /* clear... */
342 scu->cmd_byte = 0 ; /* clear... */
343
344 outb(ASC_CFG,scu->cfg_byte); /* for safety, do this here */
345 outb(ASC_CMD,scu->cmd_byte); /* probably not needed */
346 tsleep((caddr_t)scu, ASCPRI | PCATCH, "ascres", hz/10); /* sleep .1 sec */
347
348 scu->blen = DEFAULT_BLEN;
349 scu->btime = TIMEOUT;
350 scu->height = 0 ; /* don't know better... */
351}
352/**************************************************************************
353 ***
354 *** ascprobe
355 *** read status port and check for proper configuration:
356 *** - if address group matches (status byte has reasonable value)
357 *** cannot check interrupt/dma, only clear the config byte.
358 ***/
359static int
360ascprobe (struct isa_device *isdp)
361{
362 int unit = isdp->id_unit;
363 struct asc_unit *scu = unittab + unit;
364 int stb;
365 static int once;
366
367 if (!once++)
368 cdevsw_add(&asc_cdevsw);
369
370 scu->base = isdp->id_iobase; /*** needed by the following macros ***/
371 scu->flags = FLAG_DEBUG;
372
373 if ( isdp->id_iobase < 0 ) {
374 lprintf("asc%d.probe: no iobase given\n", unit);
375 return PROBE_FAIL;
376 }
377
378 if ((stb=inb(ASC_PROBE)) != ASC_PROBE_VALUE) {
379 lprintf("asc%d.probe: failed, got 0x%02x instead of 0x%02x\n",
380 unit, stb, ASC_PROBE_VALUE);
381 return PROBE_FAIL;
382 }
383
384/*
385 * NOTE NOTE NOTE
386 * the new AmiScan Color board uses int 10,11,12 instead of 3,5,10
387 * respectively. This means that the driver must act accordingly.
388 * Unfortunately there is no easy way of telling which board one has,
389 * other than trying to get an interrupt and noticing that it is
390 * missing. use "option ASC_NEW_BOARD" if you have a new board.
391 *
392 */
393
394#if ASC_NEW_BOARD
395#define ASC_IRQ_A 10
396#define ASC_IRQ_B 11
397#define ASC_IRQ_C 12
398#else
399#define ASC_IRQ_A 3
400#define ASC_IRQ_B 5
401#define ASC_IRQ_C 10
402#endif
403
404 switch(ffs(isdp->id_irq) - 1) {
405 case ASC_IRQ_A :
406 scu->int_byte = ASC_CNF_IRQ3;
407 break;
408 case ASC_IRQ_B :
409 scu->int_byte = ASC_CNF_IRQ5;
410 break;
411 case ASC_IRQ_C :
412 scu->int_byte = ASC_CNF_IRQ10;
413 break;
414#if 0
415 case -1:
416 scu->int_byte = 0;
417 lprintf("asc%d.probe: warning - going interruptless\n", unit);
418 break;
419#endif
420 default:
421 lprintf("asc%d.probe: unsupported INT %d (only 3, 5, 10)\n",
422 unit, ffs(isdp->id_irq) - 1 );
423 return PROBE_FAIL;
424 }
425 scu->dma_num = isdp->id_drq;
426 switch(scu->dma_num) {
427 case 1:
428 scu->dma_byte = ASC_CNF_DMA1;
429 break;
430 case 3:
431 scu->dma_byte = ASC_CNF_DMA3;
432 break;
433 default:
434 lprintf("asc%d.probe: unsupported DMA %d (only 1 or 3)\n",
435 unit, scu->dma_num);
436 return PROBE_FAIL;
437 }
438 asc_reset(scu);
439/* lprintf("asc%d.probe: ok\n", unit); */
440
441 scu->flags &= ~FLAG_DEBUG;
442 scu->icnt = 0;
443 return PROBE_SUCCESS;
444}
445
446/**************************************************************************
447 ***
448 *** ascattach
449 *** finish initialization of unit structure, get geometry value (?)
450 ***/
451
452static int
453ascattach(struct isa_device *isdp)
454{
455 int unit = isdp->id_unit;
456 struct asc_unit *scu = unittab + unit;
457
458 isdp->id_ointr = ascintr;
459 scu->flags |= FLAG_DEBUG;
460 printf("asc%d: [GI1904/Trust Ami-Scan Grey/Color]\n", unit);
461
462 /*
463 * Initialize buffer structure.
464 * XXX this must be done early to give a good chance of getting a
465 * contiguous buffer. This wastes memory.
466 */
467 scu->sbuf.base = contigmalloc((unsigned long)MAX_BUFSIZE, M_DEVBUF, M_NOWAIT,
468 0ul, 0xfffffful, 1ul, 0x10000ul);
469 if ( scu->sbuf.base == NULL )
470 {
471 lprintf("asc%d.attach: buffer allocation failed\n", unit);
472 return ATTACH_FAIL; /* XXX attach must not fail */
473 }
474 scu->sbuf.size = INVALID;
475 scu->sbuf.rptr = INVALID;
476
477 scu->flags |= ATTACHED;
478/* lprintf("asc%d.attach: ok\n", unit); */
479 scu->flags &= ~FLAG_DEBUG;
480
481 scu->selp.si_flags=0;
482 scu->selp.si_pid=(pid_t)0;
483#define ASC_UID 0
484#define ASC_GID 13
485 make_dev(&asc_cdevsw, unit<<6, ASC_UID, ASC_GID, 0666, "asc%d", unit);
486 make_dev(&asc_cdevsw, ((unit<<6) + FRMT_PBM),
487 ASC_UID, ASC_GID, 0666, "asc%dp", unit);
488 make_dev(&asc_cdevsw, ((unit<<6) + DBUG_MASK),
489 ASC_UID, ASC_GID, 0666, "asc%dd", unit);
490 make_dev(&asc_cdevsw, ((unit<<6) + DBUG_MASK+FRMT_PBM),
491 ASC_UID, ASC_GID, 0666, "asc%dpd", unit);
492 return ATTACH_SUCCESS;
493}
494
495/**************************************************************************
496 ***
497 *** ascintr
498 *** the interrupt routine, at the end of DMA...
499 ***/
500static void
501ascintr(int unit)
502{
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... */
517 isa_dmadone(ISADMA_READ, scu->sbuf.base+scu->sbuf.wptr,
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
546ascopen(dev_t dev, int flags, int fmt, struct proc *p)
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);
629 tsleep((caddr_t)scu, ASCPRI | PCATCH, "ascstrd", hz/10); /* sleep .1 sec */
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
641ascclose(dev_t dev, int flags, int fmt, struct proc *p)
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 */
659 tsleep((caddr_t)scu, ASCPRI | PCATCH, "ascclo", hz/2); /* sleep 1/2 sec */
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;
704 int sps, res;
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
731 sps=spltty();
732 if ( scu->sbuf.count == 0 ) { /* no data avail., must wait */
733 if (!(scu->flags & DMA_ACTIVE)) dma_restart(scu);
734 scu->flags |= SLEEPING;
735 res = tsleep((caddr_t)scu, ASCPRI | PCATCH, "ascread", 0);
736 scu->flags &= ~SLEEPING;
737 if ( res == 0 ) res = SUCCESS;
738 }
739 splx(sps); /* lower priority... */
740 if (scu->flags & FLAG_DEBUG)
741 tsleep((caddr_t)scu, ASCPRI | PCATCH, "ascdly",hz);
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
767 sps=spltty();
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);
773 splx(sps); /* lower priority... */
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
788ascioctl(dev_t dev, u_long cmd, caddr_t data, int flags, struct proc *p)
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
853ascpoll(dev_t dev, int events, struct proc *p)
854{
855 int unit = UNIT(minor(dev));
856 struct asc_unit *scu = unittab + unit;
857 int sps;
858 struct proc *p1;
859 int revents = 0;
860
861 sps=spltty();
862
863 if (events & (POLLIN | POLLRDNORM)) {
864 if (scu->sbuf.count >0)
865 revents |= events & (POLLIN | POLLRDNORM);
866 else {
867 if (!(scu->flags & DMA_ACTIVE))
868 dma_restart(scu);
869
870 if (scu->selp.si_pid && (p1=pfind(scu->selp.si_pid))
871 && p1->p_wchan == (caddr_t)&selwait)
872 scu->selp.si_flags = SI_COLL;
873 else
874 scu->selp.si_pid = p->p_pid;
875 }
876 }
877 splx(sps);
878 return (revents);
879}