gold: Fix hardcoded library search path
[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 $
38 */
39
1f2de5d4 40#include "use_asc.h"
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41#include <sys/param.h>
42#include <sys/systm.h>
43#include <sys/conf.h>
44#include <sys/proc.h>
45#include <sys/buf.h>
46#include <sys/malloc.h>
47#include <sys/kernel.h>
429483fc 48#include <sys/event.h>
984263bc 49#include <sys/uio.h>
9acd5bbb 50#include <sys/thread2.h>
feafdc7d 51#include <sys/bus.h>
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52
53#include <machine/asc_ioctl.h>
54
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55#include <bus/isa/isa.h>
56#include <bus/isa/isa_device.h>
feafdc7d 57#include <bus/isa/isavar.h>
1f2de5d4 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
26be20a0 76# define lprintf if(scu->flags & FLAG_DEBUG) kprintf
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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 */
5b22f1a7 156 struct kqinfo kqp;
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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;
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186static d_kqfilter_t asckqfilter;
187
188static void ascfilter_detach(struct knote *kn);
189static int ascfilter(struct knote *kn, long hint);
984263bc 190
fef8985e 191static struct dev_ops asc_ops = {
88abd8b5 192 { "asc", 0, 0 },
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193 .d_open = ascopen,
194 .d_close = ascclose,
195 .d_read = ascread,
196 .d_ioctl = ascioctl,
429483fc 197 .d_kqfilter = asckqfilter
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198};
199
200#define STATIC static
201
202/***
203 *** LOCALLY USED SUBROUTINES
204 ***
205 ***/
206
207/***
208 *** get_resolution
209 *** read resolution from the scanner
210 ***/
211static void
212get_resolution(struct asc_unit *scu)
213{
214 int res, i, delay;
215
216 res=0;
217 scu->cmd_byte = ASC_STANDBY;
218 outb(ASC_CMD, scu->cmd_byte);
377d4740 219 tsleep((caddr_t)scu, PCATCH, "ascres", hz/10);
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220 for(delay= 100; (res=inb(ASC_STAT)) & ASC_RDY_FLAG; delay--)
221 {
377d4740 222 i = tsleep((caddr_t)scu, PCATCH, "ascres0", 1);
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223 if ( ( i == 0 ) || ( i == EWOULDBLOCK ) )
224 i = SUCCESS;
225 else
226 break;
227 }
228 if (delay==0) {
229 lprintf("asc.get_resolution: timeout completing command\n");
230 return /* -1 */;
231 }
232 /* ... actual read resolution... */
233 res &= ASC_RES_MASK;
234 for (i=0; geomtab[i].dpi != INVALID; i++) {
235 if (geomtab[i].g_res == res) break;
236 }
237 if (geomtab[i].dpi==INVALID) {
238 scu->geometry= i; /* INVALID; */
239 lprintf("asc.get_resolution: wrong resolution\n");
240 } else {
241 lprintf("asc.get_resolution: %d dpi\n",geomtab[i].dpi);
242 scu->geometry = i;
243 }
244 scu->portf_byte=0; /* default */
245 if (geomtab[scu->geometry].g_res==0 && !(scu->thedev&FRMT_GRAY)) {
246 /* color scanner seems to require this */
247 scu->portf_byte=2;
248 /* scu->geometry++; */
249 }
250 scu->linesize = geomtab[scu->geometry].bpl;
251 scu->height = geomtab[scu->geometry].dpl; /* default... */
252}
253
254/***
255 *** buffer_allocate
256 *** allocate/reallocate a buffer
257 *** Now just checks that the preallocated buffer is large enough.
258 ***/
259
260static int
261buffer_allocate(struct asc_unit *scu)
262{
263 size_t size, size1;
264
265 size = scu->blen * scu->linesize;
266
267 lprintf("asc.buffer_allocate: need 0x%x bytes\n", size);
268
269 if ( size > MAX_BUFSIZE ) {
270 size1=size;
271 size= ( (MAX_BUFSIZE+scu->linesize-1) / scu->linesize)*scu->linesize;
272 lprintf("asc.buffer_allocate: 0x%x bytes are too much, try 0x%x\n",
273 size1, size);
274 return ENOMEM;
275 }
276
277 scu->sbuf.size = size;
278 scu->sbuf.rptr = 0;
279 scu->sbuf.wptr = 0;
280 scu->sbuf.count = 0; /* available data for reading */
281
282 lprintf("asc.buffer_allocate: ok\n");
283
284 return SUCCESS;
285}
286
287/*** dma_restart
288 *** invoked locally to start dma. Must run in a critical section
289 ***/
290static void
291dma_restart(struct asc_unit *scu)
292{
293 unsigned char al=scu->cmd_byte;
294
295 if (geomtab[scu->geometry].g_res==0) {/* color */
feafdc7d 296 isa_dmastart(BUF_CMD_READ, scu->sbuf.base+scu->sbuf.wptr,
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297 scu->linesize + 90 /* XXX */ , scu->dma_num);
298 /*
299 * looks like we have to set and then clear this
300 * bit to enable the scanner to send interrupts
301 */
302 outb( ASC_CMD, al |= 4 ); /* seems to disable interrupts */
303#if 0
304 outb( ASC_CMD, al |= 8 ); /* ??? seems useless */
305#endif
306 outb( ASC_CMD, al &= 0xfb );
307 scu->cmd_byte = al;
308 } else { /* normal */
feafdc7d 309 isa_dmastart(BUF_CMD_READ, scu->sbuf.base+scu->sbuf.wptr,
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310 scu->linesize, scu->dma_num);
311 /*** this is done in sub_20, after dmastart ? ***/
312#if 0
313 outb( ASC_CMD, al |= 4 );
314 outb( ASC_CMD, al |= 8 ); /* ??? seems useless */
315 outb( ASC_CMD, al &= 0xfb );
316 scu->cmd_byte = al;
317#else
318 outb( ASC_CMD, ASC_OPERATE);
319#endif
320 }
321 scu->flags |= DMA_ACTIVE;
322}
323
324/***
325 *** the main functions
326 ***/
327
328/*** asc_reset
329 *** resets the scanner and the config bytes...
330 ***/
331static void
332asc_reset(struct asc_unit *scu)
333{
334 scu->cfg_byte = 0 ; /* clear... */
335 scu->cmd_byte = 0 ; /* clear... */
336
337 outb(ASC_CFG,scu->cfg_byte); /* for safety, do this here */
338 outb(ASC_CMD,scu->cmd_byte); /* probably not needed */
377d4740 339 tsleep((caddr_t)scu, PCATCH, "ascres", hz/10); /* sleep .1 sec */
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340
341 scu->blen = DEFAULT_BLEN;
342 scu->btime = TIMEOUT;
343 scu->height = 0 ; /* don't know better... */
344}
345/**************************************************************************
346 ***
347 *** ascprobe
348 *** read status port and check for proper configuration:
349 *** - if address group matches (status byte has reasonable value)
350 *** cannot check interrupt/dma, only clear the config byte.
351 ***/
352static int
353ascprobe (struct isa_device *isdp)
354{
355 int unit = isdp->id_unit;
356 struct asc_unit *scu = unittab + unit;
357 int stb;
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358
359 scu->base = isdp->id_iobase; /*** needed by the following macros ***/
360 scu->flags = FLAG_DEBUG;
361
362 if ( isdp->id_iobase < 0 ) {
363 lprintf("asc%d.probe: no iobase given\n", unit);
364 return PROBE_FAIL;
365 }
366
367 if ((stb=inb(ASC_PROBE)) != ASC_PROBE_VALUE) {
368 lprintf("asc%d.probe: failed, got 0x%02x instead of 0x%02x\n",
369 unit, stb, ASC_PROBE_VALUE);
370 return PROBE_FAIL;
371 }
372
373/*
374 * NOTE NOTE NOTE
375 * the new AmiScan Color board uses int 10,11,12 instead of 3,5,10
376 * respectively. This means that the driver must act accordingly.
377 * Unfortunately there is no easy way of telling which board one has,
378 * other than trying to get an interrupt and noticing that it is
379 * missing. use "option ASC_NEW_BOARD" if you have a new board.
380 *
381 */
382
383#if ASC_NEW_BOARD
384#define ASC_IRQ_A 10
385#define ASC_IRQ_B 11
386#define ASC_IRQ_C 12
387#else
388#define ASC_IRQ_A 3
389#define ASC_IRQ_B 5
390#define ASC_IRQ_C 10
391#endif
392
393 switch(ffs(isdp->id_irq) - 1) {
394 case ASC_IRQ_A :
395 scu->int_byte = ASC_CNF_IRQ3;
396 break;
397 case ASC_IRQ_B :
398 scu->int_byte = ASC_CNF_IRQ5;
399 break;
400 case ASC_IRQ_C :
401 scu->int_byte = ASC_CNF_IRQ10;
402 break;
403#if 0
404 case -1:
405 scu->int_byte = 0;
406 lprintf("asc%d.probe: warning - going interruptless\n", unit);
407 break;
408#endif
409 default:
410 lprintf("asc%d.probe: unsupported INT %d (only 3, 5, 10)\n",
411 unit, ffs(isdp->id_irq) - 1 );
412 return PROBE_FAIL;
413 }
414 scu->dma_num = isdp->id_drq;
415 switch(scu->dma_num) {
416 case 1:
417 scu->dma_byte = ASC_CNF_DMA1;
418 break;
419 case 3:
420 scu->dma_byte = ASC_CNF_DMA3;
421 break;
422 default:
423 lprintf("asc%d.probe: unsupported DMA %d (only 1 or 3)\n",
424 unit, scu->dma_num);
425 return PROBE_FAIL;
426 }
427 asc_reset(scu);
428/* lprintf("asc%d.probe: ok\n", unit); */
429
430 scu->flags &= ~FLAG_DEBUG;
431 scu->icnt = 0;
432 return PROBE_SUCCESS;
433}
434
435/**************************************************************************
436 ***
437 *** ascattach
438 *** finish initialization of unit structure, get geometry value (?)
439 ***/
440
441static int
442ascattach(struct isa_device *isdp)
443{
444 int unit = isdp->id_unit;
445 struct asc_unit *scu = unittab + unit;
446
1b51b0fa 447 isdp->id_intr = (inthand2_t *)ascintr;
984263bc 448 scu->flags |= FLAG_DEBUG;
26be20a0 449 kprintf("asc%d: [GI1904/Trust Ami-Scan Grey/Color]\n", unit);
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450
451 /*
452 * Initialize buffer structure.
453 * XXX this must be done early to give a good chance of getting a
454 * contiguous buffer. This wastes memory.
455 */
456 scu->sbuf.base = contigmalloc((unsigned long)MAX_BUFSIZE, M_DEVBUF, M_NOWAIT,
457 0ul, 0xfffffful, 1ul, 0x10000ul);
458 if ( scu->sbuf.base == NULL )
459 {
460 lprintf("asc%d.attach: buffer allocation failed\n", unit);
461 return ATTACH_FAIL; /* XXX attach must not fail */
462 }
463 scu->sbuf.size = INVALID;
464 scu->sbuf.rptr = INVALID;
465
466 scu->flags |= ATTACHED;
467/* lprintf("asc%d.attach: ok\n", unit); */
468 scu->flags &= ~FLAG_DEBUG;
469
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470#define ASC_UID 0
471#define ASC_GID 13
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472 make_dev(&asc_ops, unit<<6, ASC_UID, ASC_GID, 0666, "asc%d", unit);
473 make_dev(&asc_ops, ((unit<<6) + FRMT_PBM),
3e82b46c 474 ASC_UID, ASC_GID, 0666, "asc%dp", unit);
fef8985e 475 make_dev(&asc_ops, ((unit<<6) + DBUG_MASK),
3e82b46c 476 ASC_UID, ASC_GID, 0666, "asc%dd", unit);
fef8985e 477 make_dev(&asc_ops, ((unit<<6) + DBUG_MASK+FRMT_PBM),
3e82b46c 478 ASC_UID, ASC_GID, 0666, "asc%dpd", unit);
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479 return ATTACH_SUCCESS;
480}
481
482/**************************************************************************
483 ***
484 *** ascintr
485 *** the interrupt routine, at the end of DMA...
486 ***/
487static void
477d3c1c 488ascintr(void *arg)
984263bc 489{
1b51b0fa 490 int unit = (int)arg;
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491 struct asc_unit *scu = unittab + unit;
492 int chan_bit = 0x01 << scu->dma_num;
493
494 scu->icnt++;
495 /* ignore stray interrupts... */
496 if ((scu->flags & (OPEN |READING)) != (OPEN | READING) ) {
497 /* must be after closing... */
498 scu->flags &= ~(OPEN | READING | DMA_ACTIVE | SLEEPING | SEL_COLL);
499 return;
500 }
501 if ( (scu->flags & DMA_ACTIVE) && (inb(DMA1_READY) & chan_bit) != 0) {
502 outb( ASC_CMD, ASC_STANDBY);
503 scu->flags &= ~DMA_ACTIVE;
504 /* bounce buffers... */
feafdc7d 505 isa_dmadone(BUF_CMD_READ, scu->sbuf.base+scu->sbuf.wptr,
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506 scu->linesize, scu->dma_num);
507 scu->sbuf.wptr += scu->linesize;
508 if (scu->sbuf.wptr >= scu->sbuf.size) scu->sbuf.wptr=0;
509 scu->sbuf.count += scu->linesize;
510 if (scu->flags & SLEEPING) {
511 scu->flags &= ~SLEEPING;
512 wakeup((caddr_t)scu);
513 }
514 if (scu->sbuf.size - scu->sbuf.count >= scu->linesize) {
515 dma_restart(scu);
516 }
5b22f1a7 517 KNOTE(&scu->kqp.ki_note, 0);
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518 }
519}
520
521/**************************************************************************
522 ***
523 *** ascopen
524 *** set open flag, set modes according to minor number
525 *** FOR RELEASE:
526 *** don't switch scanner on, wait until first read or ioctls go before
527 ***/
528
529STATIC int
fef8985e 530ascopen(struct dev_open_args *ap)
984263bc 531{
b13267a5 532 cdev_t dev = ap->a_head.a_dev;
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533 struct asc_unit *scu;
534 int unit;
535
536 unit = UNIT(minor(dev)) & UNIT_MASK;
537 if ( unit >= NASC )
538 {
539#ifdef ASCDEBUG
540 /* XXX lprintf isn't valid here since there is no scu. */
26be20a0 541 kprintf("asc%d.open: unconfigured unit number (max %d)\n", unit, NASC);
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542#endif
543 return ENXIO;
544 }
545 scu = unittab + unit;
546 if ( !( scu->flags & ATTACHED ) )
547 {
548 lprintf("asc%d.open: unit was not attached successfully 0x%04x\n",
549 unit, scu->flags);
550 return ENXIO;
551 }
552
553 if ( minor(dev) & DBUG_MASK )
554 scu->flags |= FLAG_DEBUG;
555 else
556 scu->flags &= ~FLAG_DEBUG;
557
558 switch(minor(dev) & FRMT_MASK) {
559 case FRMT_PBM:
560 scu->flags |= PBM_MODE;
561 lprintf("asc%d.open: pbm mode\n", unit);
562 break;
563 case FRMT_RAW:
564 lprintf("asc%d.open: raw mode\n", unit);
565 scu->flags &= ~PBM_MODE;
566 break;
567 default:
568 lprintf("asc%d.open: gray maps are not yet supported", unit);
569 return ENXIO;
570 }
571
572 lprintf("asc%d.open: minor %d icnt %ld\n", unit, minor(dev), scu->icnt);
573
574 if ( scu->flags & OPEN ) {
575 lprintf("asc%d.open: already open", unit);
576 return EBUSY;
577 }
578 if (isa_dma_acquire(scu->dma_num))
579 return(EBUSY);
580
581 scu->flags = ATTACHED | OPEN;
582
583 asc_reset(scu);
584 get_resolution(scu);
585 return SUCCESS;
586}
587
588static int
589asc_startread(struct asc_unit *scu)
590{
591 /*** from here on, things can be delayed to the first read/ioctl ***/
592 /*** this was done in sub_12... ***/
593 scu->cfg_byte= scu->cmd_byte=0; /* init scanner */
594 outb(ASC_CMD, scu->cmd_byte);
595 /*** this was done in sub_16, set scan len... ***/
596 outb(ASC_BOH, scu->portf_byte );
597 if (geomtab[scu->geometry].g_res==0) { /* color */
598 scu->cmd_byte = 0x00 ;
599 } else {
600 scu->cmd_byte = 0x90 ;
601 }
602 outb(ASC_CMD, scu->cmd_byte);
603 outb(ASC_LEN_L, scu->linesize & 0xff /* len_low */);
604 outb(ASC_LEN_H, (scu->linesize >>8) & 0xff /* len_high */);
605 /*** this was done in sub_21, config DMA ... ***/
606 scu->cfg_byte |= scu->dma_byte;
607 outb(ASC_CFG, scu->cfg_byte);
608 /*** sub_22: enable int on the scanner ***/
609 scu->cfg_byte |= scu->int_byte;
610 outb(ASC_CFG, scu->cfg_byte);
611 /*** sub_28: light on etc...***/
612 scu->cmd_byte = ASC_STANDBY;
613 outb(ASC_CMD, scu->cmd_byte);
377d4740 614 tsleep((caddr_t)scu, PCATCH, "ascstrd", hz/10); /* sleep .1 sec */
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615 return SUCCESS;
616}
617
618/**************************************************************************
619 ***
620 *** ascclose
621 *** turn off scanner, release the buffer
622 *** should probably terminate dma ops, release int and dma. lr 12mar95
623 ***/
624
625STATIC int
fef8985e 626ascclose(struct dev_close_args *ap)
984263bc 627{
b13267a5 628 cdev_t dev = ap->a_head.a_dev;
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629 int unit = UNIT(minor(dev));
630 struct asc_unit *scu = unittab + unit;
631
632 lprintf("asc%d.close: minor %d\n",
633 unit, minor(dev));
634
635 if ( unit >= NASC || !( scu->flags & ATTACHED ) ) {
636 lprintf("asc%d.close: unit was not attached successfully 0x%04x\n",
637 unit, scu->flags);
638 return ENXIO;
639 }
640 /* all this is in sub_29... */
641 /* cli(); */
642 outb(ASC_CFG, 0 ); /* don't save in CFG byte!!! */
643 scu->cmd_byte &= ~ASC_LIGHT_ON;
644 outb(ASC_CMD, scu->cmd_byte);/* light off */
377d4740 645 tsleep((caddr_t)scu, PCATCH, "ascclo", hz/2); /* sleep 1/2 sec */
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646 scu->cfg_byte &= ~ scu->dma_byte ; /* disable scanner dma */
647 scu->cfg_byte &= ~ scu->int_byte ; /* disable scanner int */
648 outb(ASC_CFG, scu->cfg_byte);
649 /* --- disable dma controller ? --- */
650 isa_dma_release(scu->dma_num);
651 /* --- disable interrupts on the controller (sub_24) --- */
652
653 scu->sbuf.size = INVALID;
654 scu->sbuf.rptr = INVALID;
655
656 scu->flags &= ~(FLAG_DEBUG | OPEN | READING);
657
658 return SUCCESS;
659}
660
661static void
662pbm_init(struct asc_unit *scu)
663{
664 int width = geomtab[scu->geometry].dpl;
f8c7a42d 665 int l= ksprintf(scu->sbuf.base,"P4 %d %d\n", width, scu->height);
984263bc
MD
666 char *p;
667
668 scu->bcount = scu->height * width / 8 + l;
669
670 /* move header to end of sbuf */
671 scu->sbuf.rptr=scu->sbuf.size-l;
672 bcopy(scu->sbuf.base, scu->sbuf.base+scu->sbuf.rptr,l);
673 scu->sbuf.count = l;
674 if (geomtab[scu->geometry].g_res!=0) { /* BW scanner */
675 for(p = scu->sbuf.base + scu->sbuf.rptr; l; p++, l--)
676 *p = ~*p;
677}
678}
679/**************************************************************************
680 ***
681 *** ascread
682 ***/
683
684STATIC int
fef8985e 685ascread(struct dev_read_args *ap)
984263bc 686{
b13267a5 687 cdev_t dev = ap->a_head.a_dev;
fef8985e 688 struct uio *uio = ap->a_uio;
984263bc
MD
689 int unit = UNIT(minor(dev));
690 struct asc_unit *scu = unittab + unit;
691 size_t nbytes;
9acd5bbb 692 int res;
984263bc
MD
693 unsigned char *p;
694
695 lprintf("asc%d.read: minor %d icnt %ld\n", unit, minor(dev), scu->icnt);
696
697 if ( unit >= NASC || !( scu->flags & ATTACHED ) ) {
698 lprintf("asc%d.read: unit was not attached successfully 0x%04x\n",
699 unit, scu->flags);
700 return ENXIO;
701 }
702
703 if ( !(scu->flags & READING) ) { /*** first read... ***/
704 /* allocate a buffer for reading data and init things */
705 if ( (res = buffer_allocate(scu)) == SUCCESS ) scu->flags |= READING;
706 else return res;
707 asc_startread(scu);
708 if ( scu->flags & PBM_MODE ) { /* initialize for pbm mode */
709 pbm_init(scu);
710 }
711 }
712
713 lprintf("asc%d.read(before): "
714 "sz 0x%x, rptr 0x%x, wptr 0x%x, cnt 0x%x bcnt 0x%x flags 0x%x icnt %ld\n",
715 unit, scu->sbuf.size, scu->sbuf.rptr,
716 scu->sbuf.wptr, scu->sbuf.count, scu->bcount,scu->flags,
717 scu->icnt);
718
9acd5bbb 719 crit_enter();
984263bc
MD
720 if ( scu->sbuf.count == 0 ) { /* no data avail., must wait */
721 if (!(scu->flags & DMA_ACTIVE)) dma_restart(scu);
722 scu->flags |= SLEEPING;
377d4740 723 res = tsleep((caddr_t)scu, PCATCH, "ascread", 0);
984263bc
MD
724 scu->flags &= ~SLEEPING;
725 if ( res == 0 ) res = SUCCESS;
726 }
9acd5bbb 727 crit_exit();
984263bc 728 if (scu->flags & FLAG_DEBUG)
377d4740 729 tsleep((caddr_t)scu, PCATCH, "ascdly",hz);
984263bc
MD
730 lprintf("asc%d.read(after): "
731 "sz 0x%x, rptr 0x%x, wptr 0x%x, cnt 0x%x bcnt 0x%x flags 0x%x icnt %ld\n",
732 unit, scu->sbuf.size, scu->sbuf.rptr,
733 scu->sbuf.wptr, scu->sbuf.count, scu->bcount,scu->flags,scu->icnt);
734
735 /* first, not more than available... */
e54488bb 736 nbytes = szmin(uio->uio_resid, scu->sbuf.count);
984263bc 737 /* second, contiguous data... */
e54488bb 738 nbytes = szmin( nbytes, (scu->sbuf.size - scu->sbuf.rptr) );
984263bc 739 /* third, one line (will remove this later, XXX) */
e54488bb 740 nbytes = szmin( nbytes, scu->linesize );
984263bc 741 if ( (scu->flags & PBM_MODE) )
e54488bb 742 nbytes = szmin( nbytes, scu->bcount );
984263bc
MD
743 lprintf("asc%d.read: transferring 0x%x bytes\n", unit, nbytes);
744 if (geomtab[scu->geometry].g_res!=0) { /* BW scanner */
745 lprintf("asc%d.read: invert buffer\n",unit);
746 for(p = scu->sbuf.base + scu->sbuf.rptr, res=nbytes; res; p++, res--)
747 *p = ~*p;
748 }
749 res = uiomove(scu->sbuf.base + scu->sbuf.rptr, nbytes, uio);
750 if ( res != SUCCESS ) {
751 lprintf("asc%d.read: uiomove failed %d", unit, res);
752 return res;
753 }
754
9acd5bbb 755 crit_enter();
984263bc
MD
756 scu->sbuf.rptr += nbytes;
757 if (scu->sbuf.rptr >= scu->sbuf.size) scu->sbuf.rptr=0;
758 scu->sbuf.count -= nbytes;
759 /* having moved some data, can read mode */
760 if (!(scu->flags & DMA_ACTIVE)) dma_restart(scu);
9acd5bbb 761 crit_exit();
984263bc
MD
762 if ( scu->flags & PBM_MODE ) scu->bcount -= nbytes;
763
764 lprintf("asc%d.read: size 0x%x, pointer 0x%x, bcount 0x%x, ok\n",
765 unit, scu->sbuf.size, scu->sbuf.rptr, scu->bcount);
766
767 return SUCCESS;
768}
769
770/**************************************************************************
771 ***
772 *** ascioctl
773 ***/
774
775STATIC int
fef8985e 776ascioctl(struct dev_ioctl_args *ap)
984263bc 777{
b13267a5 778 cdev_t dev = ap->a_head.a_dev;
fef8985e 779 caddr_t data = ap->a_data;
984263bc
MD
780 int unit = UNIT(minor(dev));
781 struct asc_unit *scu = unittab + unit;
782
783 lprintf("asc%d.ioctl: minor %d\n",
784 unit, minor(dev));
785
786 if ( unit >= NASC || !( scu->flags & ATTACHED ) ) {
787 lprintf("asc%d.ioctl: unit was not attached successfully 0x%04x\n",
788 unit, scu->flags);
789 return ENXIO;
790 }
fef8985e 791 switch(ap->a_cmd) {
984263bc
MD
792 case ASC_GRES:
793 asc_reset(scu);
794 get_resolution(scu);
795 *(int *)data=geomtab[scu->geometry].dpi;
796 lprintf("asc%d.ioctl:ASC_GRES %ddpi\n", unit, *(int *)data);
797 return SUCCESS;
798 case ASC_GWIDTH:
799 *(int *)data=geomtab[scu->geometry].dpl;
800 lprintf("asc%d.ioctl:ASC_GWIDTH %d\n", unit, *(int *)data);
801 return SUCCESS;
802 case ASC_GHEIGHT:
803 *(int *)data=scu->height;
804 lprintf("asc%d.ioctl:ASC_GHEIGHT %d\n", unit, *(int *)data);
805 return SUCCESS;
806 case ASC_SHEIGHT:
807 lprintf("asc%d.ioctl:ASC_SHEIGHT %d\n", unit, *(int *)data);
808 if ( scu->flags & READING ) {
809 lprintf("asc%d:ioctl on already reading unit\n", unit);
810 return EBUSY;
811 }
812 scu->height=*(int *)data;
813 return SUCCESS;
814#if 0
815 case ASC_GBLEN:
816 *(int *)data=scu->blen;
817 lprintf("asc%d.ioctl:ASC_GBLEN %d\n", unit, *(int *)data);
818 return SUCCESS;
819 case ASC_SBLEN:
820 lprintf("asc%d.ioctl:ASC_SBLEN %d\n", unit, *(int *)data);
821 if (*(int *)data * geomtab[scu->geometry].dpl / 8 > MAX_BUFSIZE)
822 {
823 lprintf("asc%d:ioctl buffer size too high\n", unit);
824 return ENOMEM;
825 }
826 scu->blen=*(int *)data;
827 return SUCCESS;
828 case ASC_GBTIME:
829 *(int *)data = scu->btime / hz;
830 lprintf("asc%d.ioctl:ASC_GBTIME %d\n", unit, *(int *)data);
831 return SUCCESS;
832 case ASC_SBTIME:
833 scu->btime = *(int *)data * hz;
834 lprintf("asc%d.ioctl:ASC_SBTIME %d\n", unit, *(int *)data);
835 return SUCCESS;
836#endif
837 default: return ENOTTY;
838 }
839 return SUCCESS;
840}
841
429483fc 842static struct filterops ascfiltops =
4c91dbc9 843 { FILTEROP_ISFD, NULL, ascfilter_detach, ascfilter };
429483fc
SG
844
845STATIC int
846asckqfilter(struct dev_kqfilter_args *ap)
847{
848 cdev_t dev = ap->a_head.a_dev;
849 int unit = UNIT(minor(dev));
850 struct asc_unit *scu = unittab + unit;
851 struct knote *kn = ap->a_kn;
852 struct klist *klist;
853
854 ap->a_result = 0;
855
856 switch (kn->kn_filter) {
857 case EVFILT_READ:
858 kn->kn_fop = &ascfiltops;
859 kn->kn_hook = (caddr_t)scu;
860 break;
861 default:
b287d649 862 ap->a_result = EOPNOTSUPP;
429483fc
SG
863 return (0);
864 }
865
5b22f1a7
SG
866 klist = &scu->kqp.ki_note;
867 knote_insert(klist, kn);
429483fc
SG
868
869 return (0);
870}
871
872STATIC void
873ascfilter_detach(struct knote *kn)
874{
875 struct asc_unit *scu = (struct asc_unit *)kn->kn_hook;
876 struct klist *klist;
877
5b22f1a7
SG
878 klist = &scu->kqp.ki_note;
879 knote_remove(klist, kn);
429483fc
SG
880}
881
882STATIC int
883ascfilter(struct knote *kn, long hint)
884{
885 struct asc_unit *scu = (struct asc_unit *)kn->kn_hook;
886 int ready = 0;
887
888 crit_enter();
889 if (scu->sbuf.count >0)
890 ready = 1;
891 else {
892 if (!(scu->flags & DMA_ACTIVE))
893 dma_restart(scu);
894 }
895 crit_exit();
896
897 return (ready);
898}