Version:  2.0.40 2.2.26 2.4.37 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16

Linux/drivers/staging/comedi/drivers/addi_apci_3xxx.c

  1 /*
  2  * addi_apci_3xxx.c
  3  * Copyright (C) 2004,2005  ADDI-DATA GmbH for the source code of this module.
  4  * Project manager: S. Weber
  5  *
  6  *      ADDI-DATA GmbH
  7  *      Dieselstrasse 3
  8  *      D-77833 Ottersweier
  9  *      Tel: +19(0)7223/9493-0
 10  *      Fax: +49(0)7223/9493-92
 11  *      http://www.addi-data.com
 12  *      info@addi-data.com
 13  *
 14  * This program is free software; you can redistribute it and/or modify it
 15  * under the terms of the GNU General Public License as published by the
 16  * Free Software Foundation; either version 2 of the License, or (at your
 17  * option) any later version.
 18  *
 19  * This program is distributed in the hope that it will be useful, but WITHOUT
 20  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 21  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
 22  * more details.
 23  */
 24 
 25 #include <linux/module.h>
 26 #include <linux/pci.h>
 27 #include <linux/interrupt.h>
 28 
 29 #include "../comedidev.h"
 30 
 31 #include "comedi_fc.h"
 32 
 33 #define CONV_UNIT_NS            (1 << 0)
 34 #define CONV_UNIT_US            (1 << 1)
 35 #define CONV_UNIT_MS            (1 << 2)
 36 
 37 static const struct comedi_lrange apci3xxx_ai_range = {
 38         8, {
 39                 BIP_RANGE(10),
 40                 BIP_RANGE(5),
 41                 BIP_RANGE(2),
 42                 BIP_RANGE(1),
 43                 UNI_RANGE(10),
 44                 UNI_RANGE(5),
 45                 UNI_RANGE(2),
 46                 UNI_RANGE(1)
 47         }
 48 };
 49 
 50 static const struct comedi_lrange apci3xxx_ao_range = {
 51         2, {
 52                 BIP_RANGE(10),
 53                 UNI_RANGE(10)
 54         }
 55 };
 56 
 57 enum apci3xxx_boardid {
 58         BOARD_APCI3000_16,
 59         BOARD_APCI3000_8,
 60         BOARD_APCI3000_4,
 61         BOARD_APCI3006_16,
 62         BOARD_APCI3006_8,
 63         BOARD_APCI3006_4,
 64         BOARD_APCI3010_16,
 65         BOARD_APCI3010_8,
 66         BOARD_APCI3010_4,
 67         BOARD_APCI3016_16,
 68         BOARD_APCI3016_8,
 69         BOARD_APCI3016_4,
 70         BOARD_APCI3100_16_4,
 71         BOARD_APCI3100_8_4,
 72         BOARD_APCI3106_16_4,
 73         BOARD_APCI3106_8_4,
 74         BOARD_APCI3110_16_4,
 75         BOARD_APCI3110_8_4,
 76         BOARD_APCI3116_16_4,
 77         BOARD_APCI3116_8_4,
 78         BOARD_APCI3003,
 79         BOARD_APCI3002_16,
 80         BOARD_APCI3002_8,
 81         BOARD_APCI3002_4,
 82         BOARD_APCI3500,
 83 };
 84 
 85 struct apci3xxx_boardinfo {
 86         const char *name;
 87         int ai_subdev_flags;
 88         int ai_n_chan;
 89         unsigned int ai_maxdata;
 90         unsigned char ai_conv_units;
 91         unsigned int ai_min_acq_ns;
 92         unsigned int has_ao:1;
 93         unsigned int has_dig_in:1;
 94         unsigned int has_dig_out:1;
 95         unsigned int has_ttl_io:1;
 96 };
 97 
 98 static const struct apci3xxx_boardinfo apci3xxx_boardtypes[] = {
 99         [BOARD_APCI3000_16] = {
100                 .name                   = "apci3000-16",
101                 .ai_subdev_flags        = SDF_COMMON | SDF_GROUND | SDF_DIFF,
102                 .ai_n_chan              = 16,
103                 .ai_maxdata             = 0x0fff,
104                 .ai_conv_units          = CONV_UNIT_MS | CONV_UNIT_US,
105                 .ai_min_acq_ns          = 10000,
106                 .has_ttl_io             = 1,
107         },
108         [BOARD_APCI3000_8] = {
109                 .name                   = "apci3000-8",
110                 .ai_subdev_flags        = SDF_COMMON | SDF_GROUND | SDF_DIFF,
111                 .ai_n_chan              = 8,
112                 .ai_maxdata             = 0x0fff,
113                 .ai_conv_units          = CONV_UNIT_MS | CONV_UNIT_US,
114                 .ai_min_acq_ns          = 10000,
115                 .has_ttl_io             = 1,
116         },
117         [BOARD_APCI3000_4] = {
118                 .name                   = "apci3000-4",
119                 .ai_subdev_flags        = SDF_COMMON | SDF_GROUND | SDF_DIFF,
120                 .ai_n_chan              = 4,
121                 .ai_maxdata             = 0x0fff,
122                 .ai_conv_units          = CONV_UNIT_MS | CONV_UNIT_US,
123                 .ai_min_acq_ns          = 10000,
124                 .has_ttl_io             = 1,
125         },
126         [BOARD_APCI3006_16] = {
127                 .name                   = "apci3006-16",
128                 .ai_subdev_flags        = SDF_COMMON | SDF_GROUND | SDF_DIFF,
129                 .ai_n_chan              = 16,
130                 .ai_maxdata             = 0xffff,
131                 .ai_conv_units          = CONV_UNIT_MS | CONV_UNIT_US,
132                 .ai_min_acq_ns          = 10000,
133                 .has_ttl_io             = 1,
134         },
135         [BOARD_APCI3006_8] = {
136                 .name                   = "apci3006-8",
137                 .ai_subdev_flags        = SDF_COMMON | SDF_GROUND | SDF_DIFF,
138                 .ai_n_chan              = 8,
139                 .ai_maxdata             = 0xffff,
140                 .ai_conv_units          = CONV_UNIT_MS | CONV_UNIT_US,
141                 .ai_min_acq_ns          = 10000,
142                 .has_ttl_io             = 1,
143         },
144         [BOARD_APCI3006_4] = {
145                 .name                   = "apci3006-4",
146                 .ai_subdev_flags        = SDF_COMMON | SDF_GROUND | SDF_DIFF,
147                 .ai_n_chan              = 4,
148                 .ai_maxdata             = 0xffff,
149                 .ai_conv_units          = CONV_UNIT_MS | CONV_UNIT_US,
150                 .ai_min_acq_ns          = 10000,
151                 .has_ttl_io             = 1,
152         },
153         [BOARD_APCI3010_16] = {
154                 .name                   = "apci3010-16",
155                 .ai_subdev_flags        = SDF_COMMON | SDF_GROUND | SDF_DIFF,
156                 .ai_n_chan              = 16,
157                 .ai_maxdata             = 0x0fff,
158                 .ai_conv_units          = CONV_UNIT_MS | CONV_UNIT_US,
159                 .ai_min_acq_ns          = 5000,
160                 .has_dig_in             = 1,
161                 .has_dig_out            = 1,
162                 .has_ttl_io             = 1,
163         },
164         [BOARD_APCI3010_8] = {
165                 .name                   = "apci3010-8",
166                 .ai_subdev_flags        = SDF_COMMON | SDF_GROUND | SDF_DIFF,
167                 .ai_n_chan              = 8,
168                 .ai_maxdata             = 0x0fff,
169                 .ai_conv_units          = CONV_UNIT_MS | CONV_UNIT_US,
170                 .ai_min_acq_ns          = 5000,
171                 .has_dig_in             = 1,
172                 .has_dig_out            = 1,
173                 .has_ttl_io             = 1,
174         },
175         [BOARD_APCI3010_4] = {
176                 .name                   = "apci3010-4",
177                 .ai_subdev_flags        = SDF_COMMON | SDF_GROUND | SDF_DIFF,
178                 .ai_n_chan              = 4,
179                 .ai_maxdata             = 0x0fff,
180                 .ai_conv_units          = CONV_UNIT_MS | CONV_UNIT_US,
181                 .ai_min_acq_ns          = 5000,
182                 .has_dig_in             = 1,
183                 .has_dig_out            = 1,
184                 .has_ttl_io             = 1,
185         },
186         [BOARD_APCI3016_16] = {
187                 .name                   = "apci3016-16",
188                 .ai_subdev_flags        = SDF_COMMON | SDF_GROUND | SDF_DIFF,
189                 .ai_n_chan              = 16,
190                 .ai_maxdata             = 0xffff,
191                 .ai_conv_units          = CONV_UNIT_MS | CONV_UNIT_US,
192                 .ai_min_acq_ns          = 5000,
193                 .has_dig_in             = 1,
194                 .has_dig_out            = 1,
195                 .has_ttl_io             = 1,
196         },
197         [BOARD_APCI3016_8] = {
198                 .name                   = "apci3016-8",
199                 .ai_subdev_flags        = SDF_COMMON | SDF_GROUND | SDF_DIFF,
200                 .ai_n_chan              = 8,
201                 .ai_maxdata             = 0xffff,
202                 .ai_conv_units          = CONV_UNIT_MS | CONV_UNIT_US,
203                 .ai_min_acq_ns          = 5000,
204                 .has_dig_in             = 1,
205                 .has_dig_out            = 1,
206                 .has_ttl_io             = 1,
207         },
208         [BOARD_APCI3016_4] = {
209                 .name                   = "apci3016-4",
210                 .ai_subdev_flags        = SDF_COMMON | SDF_GROUND | SDF_DIFF,
211                 .ai_n_chan              = 4,
212                 .ai_maxdata             = 0xffff,
213                 .ai_conv_units          = CONV_UNIT_MS | CONV_UNIT_US,
214                 .ai_min_acq_ns          = 5000,
215                 .has_dig_in             = 1,
216                 .has_dig_out            = 1,
217                 .has_ttl_io             = 1,
218         },
219         [BOARD_APCI3100_16_4] = {
220                 .name                   = "apci3100-16-4",
221                 .ai_subdev_flags        = SDF_COMMON | SDF_GROUND | SDF_DIFF,
222                 .ai_n_chan              = 16,
223                 .ai_maxdata             = 0x0fff,
224                 .ai_conv_units          = CONV_UNIT_MS | CONV_UNIT_US,
225                 .ai_min_acq_ns          = 10000,
226                 .has_ao                 = 1,
227                 .has_ttl_io             = 1,
228         },
229         [BOARD_APCI3100_8_4] = {
230                 .name                   = "apci3100-8-4",
231                 .ai_subdev_flags        = SDF_COMMON | SDF_GROUND | SDF_DIFF,
232                 .ai_n_chan              = 8,
233                 .ai_maxdata             = 0x0fff,
234                 .ai_conv_units          = CONV_UNIT_MS | CONV_UNIT_US,
235                 .ai_min_acq_ns          = 10000,
236                 .has_ao                 = 1,
237                 .has_ttl_io             = 1,
238         },
239         [BOARD_APCI3106_16_4] = {
240                 .name                   = "apci3106-16-4",
241                 .ai_subdev_flags        = SDF_COMMON | SDF_GROUND | SDF_DIFF,
242                 .ai_n_chan              = 16,
243                 .ai_maxdata             = 0xffff,
244                 .ai_conv_units          = CONV_UNIT_MS | CONV_UNIT_US,
245                 .ai_min_acq_ns          = 10000,
246                 .has_ao                 = 1,
247                 .has_ttl_io             = 1,
248         },
249         [BOARD_APCI3106_8_4] = {
250                 .name                   = "apci3106-8-4",
251                 .ai_subdev_flags        = SDF_COMMON | SDF_GROUND | SDF_DIFF,
252                 .ai_n_chan              = 8,
253                 .ai_maxdata             = 0xffff,
254                 .ai_conv_units          = CONV_UNIT_MS | CONV_UNIT_US,
255                 .ai_min_acq_ns          = 10000,
256                 .has_ao                 = 1,
257                 .has_ttl_io             = 1,
258         },
259         [BOARD_APCI3110_16_4] = {
260                 .name                   = "apci3110-16-4",
261                 .ai_subdev_flags        = SDF_COMMON | SDF_GROUND | SDF_DIFF,
262                 .ai_n_chan              = 16,
263                 .ai_maxdata             = 0x0fff,
264                 .ai_conv_units          = CONV_UNIT_MS | CONV_UNIT_US,
265                 .ai_min_acq_ns          = 5000,
266                 .has_ao                 = 1,
267                 .has_dig_in             = 1,
268                 .has_dig_out            = 1,
269                 .has_ttl_io             = 1,
270         },
271         [BOARD_APCI3110_8_4] = {
272                 .name                   = "apci3110-8-4",
273                 .ai_subdev_flags        = SDF_COMMON | SDF_GROUND | SDF_DIFF,
274                 .ai_n_chan              = 8,
275                 .ai_maxdata             = 0x0fff,
276                 .ai_conv_units          = CONV_UNIT_MS | CONV_UNIT_US,
277                 .ai_min_acq_ns          = 5000,
278                 .has_ao                 = 1,
279                 .has_dig_in             = 1,
280                 .has_dig_out            = 1,
281                 .has_ttl_io             = 1,
282         },
283         [BOARD_APCI3116_16_4] = {
284                 .name                   = "apci3116-16-4",
285                 .ai_subdev_flags        = SDF_COMMON | SDF_GROUND | SDF_DIFF,
286                 .ai_n_chan              = 16,
287                 .ai_maxdata             = 0xffff,
288                 .ai_conv_units          = CONV_UNIT_MS | CONV_UNIT_US,
289                 .ai_min_acq_ns          = 5000,
290                 .has_ao                 = 1,
291                 .has_dig_in             = 1,
292                 .has_dig_out            = 1,
293                 .has_ttl_io             = 1,
294         },
295         [BOARD_APCI3116_8_4] = {
296                 .name                   = "apci3116-8-4",
297                 .ai_subdev_flags        = SDF_COMMON | SDF_GROUND | SDF_DIFF,
298                 .ai_n_chan              = 8,
299                 .ai_maxdata             = 0xffff,
300                 .ai_conv_units          = CONV_UNIT_MS | CONV_UNIT_US,
301                 .ai_min_acq_ns          = 5000,
302                 .has_ao                 = 1,
303                 .has_dig_in             = 1,
304                 .has_dig_out            = 1,
305                 .has_ttl_io             = 1,
306         },
307         [BOARD_APCI3003] = {
308                 .name                   = "apci3003",
309                 .ai_subdev_flags        = SDF_DIFF,
310                 .ai_n_chan              = 4,
311                 .ai_maxdata             = 0xffff,
312                 .ai_conv_units          = CONV_UNIT_MS | CONV_UNIT_US |
313                                           CONV_UNIT_NS,
314                 .ai_min_acq_ns          = 2500,
315                 .has_dig_in             = 1,
316                 .has_dig_out            = 1,
317         },
318         [BOARD_APCI3002_16] = {
319                 .name                   = "apci3002-16",
320                 .ai_subdev_flags        = SDF_DIFF,
321                 .ai_n_chan              = 16,
322                 .ai_maxdata             = 0xffff,
323                 .ai_conv_units          = CONV_UNIT_MS | CONV_UNIT_US,
324                 .ai_min_acq_ns          = 5000,
325                 .has_dig_in             = 1,
326                 .has_dig_out            = 1,
327         },
328         [BOARD_APCI3002_8] = {
329                 .name                   = "apci3002-8",
330                 .ai_subdev_flags        = SDF_DIFF,
331                 .ai_n_chan              = 8,
332                 .ai_maxdata             = 0xffff,
333                 .ai_conv_units          = CONV_UNIT_MS | CONV_UNIT_US,
334                 .ai_min_acq_ns          = 5000,
335                 .has_dig_in             = 1,
336                 .has_dig_out            = 1,
337         },
338         [BOARD_APCI3002_4] = {
339                 .name                   = "apci3002-4",
340                 .ai_subdev_flags        = SDF_DIFF,
341                 .ai_n_chan              = 4,
342                 .ai_maxdata             = 0xffff,
343                 .ai_conv_units          = CONV_UNIT_MS | CONV_UNIT_US,
344                 .ai_min_acq_ns          = 5000,
345                 .has_dig_in             = 1,
346                 .has_dig_out            = 1,
347         },
348         [BOARD_APCI3500] = {
349                 .name                   = "apci3500",
350                 .has_ao                 = 1,
351                 .has_ttl_io             = 1,
352         },
353 };
354 
355 struct apci3xxx_private {
356         void __iomem *mmio;
357         unsigned int ai_timer;
358         unsigned char ai_time_base;
359 };
360 
361 static irqreturn_t apci3xxx_irq_handler(int irq, void *d)
362 {
363         struct comedi_device *dev = d;
364         struct apci3xxx_private *devpriv = dev->private;
365         struct comedi_subdevice *s = dev->read_subdev;
366         unsigned int status;
367         unsigned int val;
368 
369         /* Test if interrupt occur */
370         status = readl(devpriv->mmio + 16);
371         if ((status & 0x2) == 0x2) {
372                 /* Reset the interrupt */
373                 writel(status, devpriv->mmio + 16);
374 
375                 val = readl(devpriv->mmio + 28);
376                 comedi_buf_put(s, val);
377 
378                 s->async->events |= COMEDI_CB_EOA;
379                 comedi_event(dev, s);
380 
381                 return IRQ_HANDLED;
382         }
383         return IRQ_NONE;
384 }
385 
386 static int apci3xxx_ai_started(struct comedi_device *dev)
387 {
388         struct apci3xxx_private *devpriv = dev->private;
389 
390         if ((readl(devpriv->mmio + 8) & 0x80000) == 0x80000)
391                 return 1;
392         else
393                 return 0;
394 
395 }
396 
397 static int apci3xxx_ai_setup(struct comedi_device *dev, unsigned int chanspec)
398 {
399         struct apci3xxx_private *devpriv = dev->private;
400         unsigned int chan = CR_CHAN(chanspec);
401         unsigned int range = CR_RANGE(chanspec);
402         unsigned int aref = CR_AREF(chanspec);
403         unsigned int delay_mode;
404         unsigned int val;
405 
406         if (apci3xxx_ai_started(dev))
407                 return -EBUSY;
408 
409         /* Clear the FIFO */
410         writel(0x10000, devpriv->mmio + 12);
411 
412         /* Get and save the delay mode */
413         delay_mode = readl(devpriv->mmio + 4);
414         delay_mode &= 0xfffffef0;
415 
416         /* Channel configuration selection */
417         writel(delay_mode, devpriv->mmio + 4);
418 
419         /* Make the configuration */
420         val = (range & 3) | ((range >> 2) << 6) |
421               ((aref == AREF_DIFF) << 7);
422         writel(val, devpriv->mmio + 0);
423 
424         /* Channel selection */
425         writel(delay_mode | 0x100, devpriv->mmio + 4);
426         writel(chan, devpriv->mmio + 0);
427 
428         /* Restore delay mode */
429         writel(delay_mode, devpriv->mmio + 4);
430 
431         /* Set the number of sequence to 1 */
432         writel(1, devpriv->mmio + 48);
433 
434         return 0;
435 }
436 
437 static int apci3xxx_ai_eoc(struct comedi_device *dev,
438                            struct comedi_subdevice *s,
439                            struct comedi_insn *insn,
440                            unsigned long context)
441 {
442         struct apci3xxx_private *devpriv = dev->private;
443         unsigned int status;
444 
445         status = readl(devpriv->mmio + 20);
446         if (status & 0x1)
447                 return 0;
448         return -EBUSY;
449 }
450 
451 static int apci3xxx_ai_insn_read(struct comedi_device *dev,
452                                  struct comedi_subdevice *s,
453                                  struct comedi_insn *insn,
454                                  unsigned int *data)
455 {
456         struct apci3xxx_private *devpriv = dev->private;
457         int ret;
458         int i;
459 
460         ret = apci3xxx_ai_setup(dev, insn->chanspec);
461         if (ret)
462                 return ret;
463 
464         for (i = 0; i < insn->n; i++) {
465                 /* Start the conversion */
466                 writel(0x80000, devpriv->mmio + 8);
467 
468                 /* Wait the EOS */
469                 ret = comedi_timeout(dev, s, insn, apci3xxx_ai_eoc, 0);
470                 if (ret)
471                         return ret;
472 
473                 /* Read the analog value */
474                 data[i] = readl(devpriv->mmio + 28);
475         }
476 
477         return insn->n;
478 }
479 
480 static int apci3xxx_ai_ns_to_timer(struct comedi_device *dev,
481                                    unsigned int *ns, int round_mode)
482 {
483         const struct apci3xxx_boardinfo *board = comedi_board(dev);
484         struct apci3xxx_private *devpriv = dev->private;
485         unsigned int base;
486         unsigned int timer;
487         int time_base;
488 
489         /* time_base: 0 = ns, 1 = us, 2 = ms */
490         for (time_base = 0; time_base < 3; time_base++) {
491                 /* skip unsupported time bases */
492                 if (!(board->ai_conv_units & (1 << time_base)))
493                         continue;
494 
495                 switch (time_base) {
496                 case 0:
497                         base = 1;
498                         break;
499                 case 1:
500                         base = 1000;
501                         break;
502                 case 2:
503                         base = 1000000;
504                         break;
505                 }
506 
507                 switch (round_mode) {
508                 case TRIG_ROUND_NEAREST:
509                 default:
510                         timer = (*ns + base / 2) / base;
511                         break;
512                 case TRIG_ROUND_DOWN:
513                         timer = *ns / base;
514                         break;
515                 case TRIG_ROUND_UP:
516                         timer = (*ns + base - 1) / base;
517                         break;
518                 }
519 
520                 if (timer < 0x10000) {
521                         devpriv->ai_time_base = time_base;
522                         devpriv->ai_timer = timer;
523                         *ns = timer * time_base;
524                         return 0;
525                 }
526         }
527         return -EINVAL;
528 }
529 
530 static int apci3xxx_ai_cmdtest(struct comedi_device *dev,
531                                struct comedi_subdevice *s,
532                                struct comedi_cmd *cmd)
533 {
534         const struct apci3xxx_boardinfo *board = comedi_board(dev);
535         int err = 0;
536         unsigned int arg;
537 
538         /* Step 1 : check if triggers are trivially valid */
539 
540         err |= cfc_check_trigger_src(&cmd->start_src, TRIG_NOW);
541         err |= cfc_check_trigger_src(&cmd->scan_begin_src, TRIG_FOLLOW);
542         err |= cfc_check_trigger_src(&cmd->convert_src, TRIG_TIMER);
543         err |= cfc_check_trigger_src(&cmd->scan_end_src, TRIG_COUNT);
544         err |= cfc_check_trigger_src(&cmd->stop_src, TRIG_COUNT | TRIG_NONE);
545 
546         if (err)
547                 return 1;
548 
549         /* Step 2a : make sure trigger sources are unique */
550 
551         err |= cfc_check_trigger_is_unique(cmd->stop_src);
552 
553         /* Step 2b : and mutually compatible */
554 
555         if (err)
556                 return 2;
557 
558         /* Step 3: check if arguments are trivially valid */
559 
560         err |= cfc_check_trigger_arg_is(&cmd->start_arg, 0);
561         err |= cfc_check_trigger_arg_is(&cmd->scan_begin_arg, 0);
562         err |= cfc_check_trigger_arg_min(&cmd->convert_arg,
563                                          board->ai_min_acq_ns);
564         err |= cfc_check_trigger_arg_is(&cmd->scan_end_arg, cmd->chanlist_len);
565 
566         if (cmd->stop_src == TRIG_COUNT)
567                 err |= cfc_check_trigger_arg_min(&cmd->stop_arg, 1);
568         else    /* TRIG_NONE */
569                 err |= cfc_check_trigger_arg_is(&cmd->stop_arg, 0);
570 
571         if (err)
572                 return 3;
573 
574         /* step 4: fix up any arguments */
575 
576         arg = cmd->convert_arg;
577         err |= apci3xxx_ai_ns_to_timer(dev, &arg, cmd->flags & TRIG_ROUND_MASK);
578         err |= cfc_check_trigger_arg_is(&cmd->convert_arg, arg);
579 
580         if (err)
581                 return 4;
582 
583         return 0;
584 }
585 
586 static int apci3xxx_ai_cmd(struct comedi_device *dev,
587                            struct comedi_subdevice *s)
588 {
589         struct apci3xxx_private *devpriv = dev->private;
590         struct comedi_cmd *cmd = &s->async->cmd;
591         int ret;
592 
593         ret = apci3xxx_ai_setup(dev, cmd->chanlist[0]);
594         if (ret)
595                 return ret;
596 
597         /* Set the convert timing unit */
598         writel(devpriv->ai_time_base, devpriv->mmio + 36);
599 
600         /* Set the convert timing */
601         writel(devpriv->ai_timer, devpriv->mmio + 32);
602 
603         /* Start the conversion */
604         writel(0x180000, devpriv->mmio + 8);
605 
606         return 0;
607 }
608 
609 static int apci3xxx_ai_cancel(struct comedi_device *dev,
610                               struct comedi_subdevice *s)
611 {
612         return 0;
613 }
614 
615 static int apci3xxx_ao_eoc(struct comedi_device *dev,
616                            struct comedi_subdevice *s,
617                            struct comedi_insn *insn,
618                            unsigned long context)
619 {
620         struct apci3xxx_private *devpriv = dev->private;
621         unsigned int status;
622 
623         status = readl(devpriv->mmio + 96);
624         if (status & 0x100)
625                 return 0;
626         return -EBUSY;
627 }
628 
629 static int apci3xxx_ao_insn_write(struct comedi_device *dev,
630                                   struct comedi_subdevice *s,
631                                   struct comedi_insn *insn,
632                                   unsigned int *data)
633 {
634         struct apci3xxx_private *devpriv = dev->private;
635         unsigned int chan = CR_CHAN(insn->chanspec);
636         unsigned int range = CR_RANGE(insn->chanspec);
637         int ret;
638         int i;
639 
640         for (i = 0; i < insn->n; i++) {
641                 /* Set the range selection */
642                 writel(range, devpriv->mmio + 96);
643 
644                 /* Write the analog value to the selected channel */
645                 writel((data[i] << 8) | chan, devpriv->mmio + 100);
646 
647                 /* Wait the end of transfer */
648                 ret = comedi_timeout(dev, s, insn, apci3xxx_ao_eoc, 0);
649                 if (ret)
650                         return ret;
651         }
652 
653         return insn->n;
654 }
655 
656 static int apci3xxx_di_insn_bits(struct comedi_device *dev,
657                                  struct comedi_subdevice *s,
658                                  struct comedi_insn *insn,
659                                  unsigned int *data)
660 {
661         data[1] = inl(dev->iobase + 32) & 0xf;
662 
663         return insn->n;
664 }
665 
666 static int apci3xxx_do_insn_bits(struct comedi_device *dev,
667                                  struct comedi_subdevice *s,
668                                  struct comedi_insn *insn,
669                                  unsigned int *data)
670 {
671         s->state = inl(dev->iobase + 48) & 0xf;
672 
673         if (comedi_dio_update_state(s, data))
674                 outl(s->state, dev->iobase + 48);
675 
676         data[1] = s->state;
677 
678         return insn->n;
679 }
680 
681 static int apci3xxx_dio_insn_config(struct comedi_device *dev,
682                                     struct comedi_subdevice *s,
683                                     struct comedi_insn *insn,
684                                     unsigned int *data)
685 {
686         unsigned int chan = CR_CHAN(insn->chanspec);
687         unsigned int mask = 0;
688         int ret;
689 
690         /*
691          * Port 0 (channels 0-7) are always inputs
692          * Port 1 (channels 8-15) are always outputs
693          * Port 2 (channels 16-23) are programmable i/o
694          */
695         if (data[0] != INSN_CONFIG_DIO_QUERY) {
696                 /* ignore all other instructions for ports 0 and 1 */
697                 if (chan < 16)
698                         return -EINVAL;
699                 else
700                         /* changing any channel in port 2 */
701                         /* changes the entire port        */
702                         mask = 0xff0000;
703         }
704 
705         ret = comedi_dio_insn_config(dev, s, insn, data, mask);
706         if (ret)
707                 return ret;
708 
709         /* update port 2 configuration */
710         outl((s->io_bits >> 24) & 0xff, dev->iobase + 224);
711 
712         return insn->n;
713 }
714 
715 static int apci3xxx_dio_insn_bits(struct comedi_device *dev,
716                                   struct comedi_subdevice *s,
717                                   struct comedi_insn *insn,
718                                   unsigned int *data)
719 {
720         unsigned int mask;
721         unsigned int val;
722 
723         mask = comedi_dio_update_state(s, data);
724         if (mask) {
725                 if (mask & 0xff)
726                         outl(s->state & 0xff, dev->iobase + 80);
727                 if (mask & 0xff0000)
728                         outl((s->state >> 16) & 0xff, dev->iobase + 112);
729         }
730 
731         val = inl(dev->iobase + 80);
732         val |= (inl(dev->iobase + 64) << 8);
733         if (s->io_bits & 0xff0000)
734                 val |= (inl(dev->iobase + 112) << 16);
735         else
736                 val |= (inl(dev->iobase + 96) << 16);
737 
738         data[1] = val;
739 
740         return insn->n;
741 }
742 
743 static int apci3xxx_reset(struct comedi_device *dev)
744 {
745         struct apci3xxx_private *devpriv = dev->private;
746         unsigned int val;
747         int i;
748 
749         /* Disable the interrupt */
750         disable_irq(dev->irq);
751 
752         /* Clear the start command */
753         writel(0, devpriv->mmio + 8);
754 
755         /* Reset the interrupt flags */
756         val = readl(devpriv->mmio + 16);
757         writel(val, devpriv->mmio + 16);
758 
759         /* clear the EOS */
760         readl(devpriv->mmio + 20);
761 
762         /* Clear the FIFO */
763         for (i = 0; i < 16; i++)
764                 val = readl(devpriv->mmio + 28);
765 
766         /* Enable the interrupt */
767         enable_irq(dev->irq);
768 
769         return 0;
770 }
771 
772 static int apci3xxx_auto_attach(struct comedi_device *dev,
773                                 unsigned long context)
774 {
775         struct pci_dev *pcidev = comedi_to_pci_dev(dev);
776         const struct apci3xxx_boardinfo *board = NULL;
777         struct apci3xxx_private *devpriv;
778         struct comedi_subdevice *s;
779         int n_subdevices;
780         int subdev;
781         int ret;
782 
783         if (context < ARRAY_SIZE(apci3xxx_boardtypes))
784                 board = &apci3xxx_boardtypes[context];
785         if (!board)
786                 return -ENODEV;
787         dev->board_ptr = board;
788         dev->board_name = board->name;
789 
790         devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
791         if (!devpriv)
792                 return -ENOMEM;
793 
794         ret = comedi_pci_enable(dev);
795         if (ret)
796                 return ret;
797 
798         dev->iobase = pci_resource_start(pcidev, 2);
799         devpriv->mmio = pci_ioremap_bar(pcidev, 3);
800 
801         if (pcidev->irq > 0) {
802                 ret = request_irq(pcidev->irq, apci3xxx_irq_handler,
803                                   IRQF_SHARED, dev->board_name, dev);
804                 if (ret == 0)
805                         dev->irq = pcidev->irq;
806         }
807 
808         n_subdevices = (board->ai_n_chan ? 0 : 1) + board->has_ao +
809                        board->has_dig_in + board->has_dig_out +
810                        board->has_ttl_io;
811         ret = comedi_alloc_subdevices(dev, n_subdevices);
812         if (ret)
813                 return ret;
814 
815         subdev = 0;
816 
817         /* Analog Input subdevice */
818         if (board->ai_n_chan) {
819                 s = &dev->subdevices[subdev];
820                 s->type         = COMEDI_SUBD_AI;
821                 s->subdev_flags = SDF_READABLE | board->ai_subdev_flags;
822                 s->n_chan       = board->ai_n_chan;
823                 s->maxdata      = board->ai_maxdata;
824                 s->range_table  = &apci3xxx_ai_range;
825                 s->insn_read    = apci3xxx_ai_insn_read;
826                 if (dev->irq) {
827                         /*
828                          * FIXME: The hardware supports multiple scan modes
829                          * but the original addi-data driver only supported
830                          * reading a single channel with interrupts. Need a
831                          * proper datasheet to fix this.
832                          *
833                          * The following scan modes are supported by the
834                          * hardware:
835                          *   1) Single software scan
836                          *   2) Single hardware triggered scan
837                          *   3) Continuous software scan
838                          *   4) Continuous software scan with timer delay
839                          *   5) Continuous hardware triggered scan
840                          *   6) Continuous hardware triggered scan with timer
841                          *      delay
842                          *
843                          * For now, limit the chanlist to a single channel.
844                          */
845                         dev->read_subdev = s;
846                         s->subdev_flags |= SDF_CMD_READ;
847                         s->len_chanlist = 1;
848                         s->do_cmdtest   = apci3xxx_ai_cmdtest;
849                         s->do_cmd       = apci3xxx_ai_cmd;
850                         s->cancel       = apci3xxx_ai_cancel;
851                 }
852 
853                 subdev++;
854         }
855 
856         /* Analog Output subdevice */
857         if (board->has_ao) {
858                 s = &dev->subdevices[subdev];
859                 s->type         = COMEDI_SUBD_AO;
860                 s->subdev_flags = SDF_WRITEABLE | SDF_GROUND | SDF_COMMON;
861                 s->n_chan       = 4;
862                 s->maxdata      = 0x0fff;
863                 s->range_table  = &apci3xxx_ao_range;
864                 s->insn_write   = apci3xxx_ao_insn_write;
865 
866                 subdev++;
867         }
868 
869         /* Digital Input subdevice */
870         if (board->has_dig_in) {
871                 s = &dev->subdevices[subdev];
872                 s->type         = COMEDI_SUBD_DI;
873                 s->subdev_flags = SDF_READABLE;
874                 s->n_chan       = 4;
875                 s->maxdata      = 1;
876                 s->range_table  = &range_digital;
877                 s->insn_bits    = apci3xxx_di_insn_bits;
878 
879                 subdev++;
880         }
881 
882         /* Digital Output subdevice */
883         if (board->has_dig_out) {
884                 s = &dev->subdevices[subdev];
885                 s->type         = COMEDI_SUBD_DO;
886                 s->subdev_flags = SDF_WRITEABLE;
887                 s->n_chan       = 4;
888                 s->maxdata      = 1;
889                 s->range_table  = &range_digital;
890                 s->insn_bits    = apci3xxx_do_insn_bits;
891 
892                 subdev++;
893         }
894 
895         /* TTL Digital I/O subdevice */
896         if (board->has_ttl_io) {
897                 s = &dev->subdevices[subdev];
898                 s->type         = COMEDI_SUBD_DIO;
899                 s->subdev_flags = SDF_READABLE | SDF_WRITEABLE;
900                 s->n_chan       = 24;
901                 s->maxdata      = 1;
902                 s->io_bits      = 0xff; /* channels 0-7 are always outputs */
903                 s->range_table  = &range_digital;
904                 s->insn_config  = apci3xxx_dio_insn_config;
905                 s->insn_bits    = apci3xxx_dio_insn_bits;
906 
907                 subdev++;
908         }
909 
910         apci3xxx_reset(dev);
911         return 0;
912 }
913 
914 static void apci3xxx_detach(struct comedi_device *dev)
915 {
916         struct apci3xxx_private *devpriv = dev->private;
917 
918         if (devpriv) {
919                 if (dev->iobase)
920                         apci3xxx_reset(dev);
921                 if (dev->irq)
922                         free_irq(dev->irq, dev);
923                 if (devpriv->mmio)
924                         iounmap(devpriv->mmio);
925         }
926         comedi_pci_disable(dev);
927 }
928 
929 static struct comedi_driver apci3xxx_driver = {
930         .driver_name    = "addi_apci_3xxx",
931         .module         = THIS_MODULE,
932         .auto_attach    = apci3xxx_auto_attach,
933         .detach         = apci3xxx_detach,
934 };
935 
936 static int apci3xxx_pci_probe(struct pci_dev *dev,
937                               const struct pci_device_id *id)
938 {
939         return comedi_pci_auto_config(dev, &apci3xxx_driver, id->driver_data);
940 }
941 
942 static const struct pci_device_id apci3xxx_pci_table[] = {
943         { PCI_VDEVICE(ADDIDATA, 0x3010), BOARD_APCI3000_16 },
944         { PCI_VDEVICE(ADDIDATA, 0x300f), BOARD_APCI3000_8 },
945         { PCI_VDEVICE(ADDIDATA, 0x300e), BOARD_APCI3000_4 },
946         { PCI_VDEVICE(ADDIDATA, 0x3013), BOARD_APCI3006_16 },
947         { PCI_VDEVICE(ADDIDATA, 0x3014), BOARD_APCI3006_8 },
948         { PCI_VDEVICE(ADDIDATA, 0x3015), BOARD_APCI3006_4 },
949         { PCI_VDEVICE(ADDIDATA, 0x3016), BOARD_APCI3010_16 },
950         { PCI_VDEVICE(ADDIDATA, 0x3017), BOARD_APCI3010_8 },
951         { PCI_VDEVICE(ADDIDATA, 0x3018), BOARD_APCI3010_4 },
952         { PCI_VDEVICE(ADDIDATA, 0x3019), BOARD_APCI3016_16 },
953         { PCI_VDEVICE(ADDIDATA, 0x301a), BOARD_APCI3016_8 },
954         { PCI_VDEVICE(ADDIDATA, 0x301b), BOARD_APCI3016_4 },
955         { PCI_VDEVICE(ADDIDATA, 0x301c), BOARD_APCI3100_16_4 },
956         { PCI_VDEVICE(ADDIDATA, 0x301d), BOARD_APCI3100_8_4 },
957         { PCI_VDEVICE(ADDIDATA, 0x301e), BOARD_APCI3106_16_4 },
958         { PCI_VDEVICE(ADDIDATA, 0x301f), BOARD_APCI3106_8_4 },
959         { PCI_VDEVICE(ADDIDATA, 0x3020), BOARD_APCI3110_16_4 },
960         { PCI_VDEVICE(ADDIDATA, 0x3021), BOARD_APCI3110_8_4 },
961         { PCI_VDEVICE(ADDIDATA, 0x3022), BOARD_APCI3116_16_4 },
962         { PCI_VDEVICE(ADDIDATA, 0x3023), BOARD_APCI3116_8_4 },
963         { PCI_VDEVICE(ADDIDATA, 0x300B), BOARD_APCI3003 },
964         { PCI_VDEVICE(ADDIDATA, 0x3002), BOARD_APCI3002_16 },
965         { PCI_VDEVICE(ADDIDATA, 0x3003), BOARD_APCI3002_8 },
966         { PCI_VDEVICE(ADDIDATA, 0x3004), BOARD_APCI3002_4 },
967         { PCI_VDEVICE(ADDIDATA, 0x3024), BOARD_APCI3500 },
968         { 0 }
969 };
970 MODULE_DEVICE_TABLE(pci, apci3xxx_pci_table);
971 
972 static struct pci_driver apci3xxx_pci_driver = {
973         .name           = "addi_apci_3xxx",
974         .id_table       = apci3xxx_pci_table,
975         .probe          = apci3xxx_pci_probe,
976         .remove         = comedi_pci_auto_unconfig,
977 };
978 module_comedi_pci_driver(apci3xxx_driver, apci3xxx_pci_driver);
979 
980 MODULE_AUTHOR("Comedi http://www.comedi.org");
981 MODULE_DESCRIPTION("Comedi low-level driver");
982 MODULE_LICENSE("GPL");
983 

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