1 /*
2 * comedi/drivers/daqboard2000.c
3 * hardware driver for IOtech DAQboard/2000
4 *
5 * COMEDI - Linux Control and Measurement Device Interface
6 * Copyright (C) 1999 Anders Blomdell <anders.blomdell@control.lth.se>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 */
18 /*
19 * Driver: daqboard2000
20 * Description: IOTech DAQBoard/2000
21 * Author: Anders Blomdell <anders.blomdell@control.lth.se>
22 * Status: works
23 * Updated: Mon, 14 Apr 2008 15:28:52 +0100
24 * Devices: [IOTech] DAQBoard/2000 (daqboard2000)
25 *
26 * Much of the functionality of this driver was determined from reading
27 * the source code for the Windows driver.
28 *
29 * The FPGA on the board requires fimware, which is available from
30 * http://www.comedi.org in the comedi_nonfree_firmware tarball.
31 *
32 * Configuration options: not applicable, uses PCI auto config
33 */
34 /*
35 * This card was obviously never intended to leave the Windows world,
36 * since it lacked all kind of hardware documentation (except for cable
37 * pinouts, plug and pray has something to catch up with yet).
38 *
39 * With some help from our swedish distributor, we got the Windows sourcecode
40 * for the card, and here are the findings so far.
41 *
42 * 1. A good document that describes the PCI interface chip is 9080db-106.pdf
43 * available from http://www.plxtech.com/products/io/pci9080
44 *
45 * 2. The initialization done so far is:
46 * a. program the FPGA (windows code sans a lot of error messages)
47 * b.
48 *
49 * 3. Analog out seems to work OK with DAC's disabled, if DAC's are enabled,
50 * you have to output values to all enabled DAC's until result appears, I
51 * guess that it has something to do with pacer clocks, but the source
52 * gives me no clues. I'll keep it simple so far.
53 *
54 * 4. Analog in.
55 * Each channel in the scanlist seems to be controlled by four
56 * control words:
57 *
58 * Word0:
59 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
60 * ! | | | ! | | | ! | | | ! | | | !
61 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
62 *
63 * Word1:
64 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
65 * ! | | | ! | | | ! | | | ! | | | !
66 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
67 * | | | | | | |
68 * +------+------+ | | | | +-- Digital input (??)
69 * | | | | +---- 10 us settling time
70 * | | | +------ Suspend acquisition (last to scan)
71 * | | +-------- Simultaneous sample and hold
72 * | +---------- Signed data format
73 * +------------------------- Correction offset low
74 *
75 * Word2:
76 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
77 * ! | | | ! | | | ! | | | ! | | | !
78 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
79 * | | | | | | | | | |
80 * +-----+ +--+--+ +++ +++ +--+--+
81 * | | | | +----- Expansion channel
82 * | | | +----------- Expansion gain
83 * | | +--------------- Channel (low)
84 * | +--------------------- Correction offset high
85 * +----------------------------- Correction gain low
86 * Word3:
87 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
88 * ! | | | ! | | | ! | | | ! | | | !
89 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
90 * | | | | | | | | |
91 * +------+------+ | | +-+-+ | | +-- Low bank enable
92 * | | | | | +---- High bank enable
93 * | | | | +------ Hi/low select
94 * | | | +---------- Gain (1,?,2,4,8,16,32,64)
95 * | | +-------------- differential/single ended
96 * | +---------------- Unipolar
97 * +------------------------- Correction gain high
98 *
99 * 999. The card seems to have an incredible amount of capabilities, but
100 * trying to reverse engineer them from the Windows source is beyond my
101 * patience.
102 *
103 */
104
105 #include <linux/module.h>
106 #include <linux/delay.h>
107 #include <linux/interrupt.h>
108
109 #include "../comedi_pci.h"
110
111 #include "8255.h"
112
113 #define DAQBOARD2000_FIRMWARE "daqboard2000_firmware.bin"
114
115 #define DAQBOARD2000_SUBSYSTEM_IDS2 0x0002 /* Daqboard/2000 - 2 Dacs */
116 #define DAQBOARD2000_SUBSYSTEM_IDS4 0x0004 /* Daqboard/2000 - 4 Dacs */
117
118 /* Initialization bits for the Serial EEPROM Control Register */
119 #define DAQBOARD2000_SECRProgPinHi 0x8001767e
120 #define DAQBOARD2000_SECRProgPinLo 0x8000767e
121 #define DAQBOARD2000_SECRLocalBusHi 0xc000767e
122 #define DAQBOARD2000_SECRLocalBusLo 0x8000767e
123 #define DAQBOARD2000_SECRReloadHi 0xa000767e
124 #define DAQBOARD2000_SECRReloadLo 0x8000767e
125
126 /* SECR status bits */
127 #define DAQBOARD2000_EEPROM_PRESENT 0x10000000
128
129 /* CPLD status bits */
130 #define DAQBOARD2000_CPLD_INIT 0x0002
131 #define DAQBOARD2000_CPLD_DONE 0x0004
132
133 static const struct comedi_lrange range_daqboard2000_ai = {
134 13, {
135 BIP_RANGE(10),
136 BIP_RANGE(5),
137 BIP_RANGE(2.5),
138 BIP_RANGE(1.25),
139 BIP_RANGE(0.625),
140 BIP_RANGE(0.3125),
141 BIP_RANGE(0.156),
142 UNI_RANGE(10),
143 UNI_RANGE(5),
144 UNI_RANGE(2.5),
145 UNI_RANGE(1.25),
146 UNI_RANGE(0.625),
147 UNI_RANGE(0.3125)
148 }
149 };
150
151 /*
152 * Register Memory Map
153 */
154 #define acqControl 0x00 /* u16 */
155 #define acqScanListFIFO 0x02 /* u16 */
156 #define acqPacerClockDivLow 0x04 /* u32 */
157 #define acqScanCounter 0x08 /* u16 */
158 #define acqPacerClockDivHigh 0x0a /* u16 */
159 #define acqTriggerCount 0x0c /* u16 */
160 #define acqResultsFIFO 0x10 /* u16 */
161 #define acqResultsShadow 0x14 /* u16 */
162 #define acqAdcResult 0x18 /* u16 */
163 #define dacScanCounter 0x1c /* u16 */
164 #define dacControl 0x20 /* u16 */
165 #define dacFIFO 0x24 /* s16 */
166 #define dacPacerClockDiv 0x2a /* u16 */
167 #define refDacs 0x2c /* u16 */
168 #define dioControl 0x30 /* u16 */
169 #define dioP3hsioData 0x32 /* s16 */
170 #define dioP3Control 0x34 /* u16 */
171 #define calEepromControl 0x36 /* u16 */
172 #define dacSetting(x) (0x38 + (x)*2) /* s16 */
173 #define dioP2ExpansionIO8Bit 0x40 /* s16 */
174 #define ctrTmrControl 0x80 /* u16 */
175 #define ctrInput(x) (0x88 + (x)*2) /* s16 */
176 #define timerDivisor(x) (0xa0 + (x)*2) /* u16 */
177 #define dmaControl 0xb0 /* u16 */
178 #define trigControl 0xb2 /* u16 */
179 #define calEeprom 0xb8 /* u16 */
180 #define acqDigitalMark 0xba /* u16 */
181 #define trigDacs 0xbc /* u16 */
182 #define dioP2ExpansionIO16Bit(x) (0xc0 + (x)*2) /* s16 */
183
184 /* Scan Sequencer programming */
185 #define DAQBOARD2000_SeqStartScanList 0x0011
186 #define DAQBOARD2000_SeqStopScanList 0x0010
187
188 /* Prepare for acquisition */
189 #define DAQBOARD2000_AcqResetScanListFifo 0x0004
190 #define DAQBOARD2000_AcqResetResultsFifo 0x0002
191 #define DAQBOARD2000_AcqResetConfigPipe 0x0001
192
193 /* Acqusition status bits */
194 #define DAQBOARD2000_AcqResultsFIFOMore1Sample 0x0001
195 #define DAQBOARD2000_AcqResultsFIFOHasValidData 0x0002
196 #define DAQBOARD2000_AcqResultsFIFOOverrun 0x0004
197 #define DAQBOARD2000_AcqLogicScanning 0x0008
198 #define DAQBOARD2000_AcqConfigPipeFull 0x0010
199 #define DAQBOARD2000_AcqScanListFIFOEmpty 0x0020
200 #define DAQBOARD2000_AcqAdcNotReady 0x0040
201 #define DAQBOARD2000_ArbitrationFailure 0x0080
202 #define DAQBOARD2000_AcqPacerOverrun 0x0100
203 #define DAQBOARD2000_DacPacerOverrun 0x0200
204 #define DAQBOARD2000_AcqHardwareError 0x01c0
205
206 /* Scan Sequencer programming */
207 #define DAQBOARD2000_SeqStartScanList 0x0011
208 #define DAQBOARD2000_SeqStopScanList 0x0010
209
210 /* Pacer Clock Control */
211 #define DAQBOARD2000_AdcPacerInternal 0x0030
212 #define DAQBOARD2000_AdcPacerExternal 0x0032
213 #define DAQBOARD2000_AdcPacerEnable 0x0031
214 #define DAQBOARD2000_AdcPacerEnableDacPacer 0x0034
215 #define DAQBOARD2000_AdcPacerDisable 0x0030
216 #define DAQBOARD2000_AdcPacerNormalMode 0x0060
217 #define DAQBOARD2000_AdcPacerCompatibilityMode 0x0061
218 #define DAQBOARD2000_AdcPacerInternalOutEnable 0x0008
219 #define DAQBOARD2000_AdcPacerExternalRising 0x0100
220
221 /* DAC status */
222 #define DAQBOARD2000_DacFull 0x0001
223 #define DAQBOARD2000_RefBusy 0x0002
224 #define DAQBOARD2000_TrgBusy 0x0004
225 #define DAQBOARD2000_CalBusy 0x0008
226 #define DAQBOARD2000_Dac0Busy 0x0010
227 #define DAQBOARD2000_Dac1Busy 0x0020
228 #define DAQBOARD2000_Dac2Busy 0x0040
229 #define DAQBOARD2000_Dac3Busy 0x0080
230
231 /* DAC control */
232 #define DAQBOARD2000_Dac0Enable 0x0021
233 #define DAQBOARD2000_Dac1Enable 0x0031
234 #define DAQBOARD2000_Dac2Enable 0x0041
235 #define DAQBOARD2000_Dac3Enable 0x0051
236 #define DAQBOARD2000_DacEnableBit 0x0001
237 #define DAQBOARD2000_Dac0Disable 0x0020
238 #define DAQBOARD2000_Dac1Disable 0x0030
239 #define DAQBOARD2000_Dac2Disable 0x0040
240 #define DAQBOARD2000_Dac3Disable 0x0050
241 #define DAQBOARD2000_DacResetFifo 0x0004
242 #define DAQBOARD2000_DacPatternDisable 0x0060
243 #define DAQBOARD2000_DacPatternEnable 0x0061
244 #define DAQBOARD2000_DacSelectSignedData 0x0002
245 #define DAQBOARD2000_DacSelectUnsignedData 0x0000
246
247 /* Trigger Control */
248 #define DAQBOARD2000_TrigAnalog 0x0000
249 #define DAQBOARD2000_TrigTTL 0x0010
250 #define DAQBOARD2000_TrigTransHiLo 0x0004
251 #define DAQBOARD2000_TrigTransLoHi 0x0000
252 #define DAQBOARD2000_TrigAbove 0x0000
253 #define DAQBOARD2000_TrigBelow 0x0004
254 #define DAQBOARD2000_TrigLevelSense 0x0002
255 #define DAQBOARD2000_TrigEdgeSense 0x0000
256 #define DAQBOARD2000_TrigEnable 0x0001
257 #define DAQBOARD2000_TrigDisable 0x0000
258
259 /* Reference Dac Selection */
260 #define DAQBOARD2000_PosRefDacSelect 0x0100
261 #define DAQBOARD2000_NegRefDacSelect 0x0000
262
263 struct daq200_boardtype {
264 const char *name;
265 int id;
266 };
267 static const struct daq200_boardtype boardtypes[] = {
268 {"ids2", DAQBOARD2000_SUBSYSTEM_IDS2},
269 {"ids4", DAQBOARD2000_SUBSYSTEM_IDS4},
270 };
271
272 struct daqboard2000_private {
273 enum {
274 card_daqboard_2000
275 } card;
276 void __iomem *plx;
277 };
278
writeAcqScanListEntry(struct comedi_device * dev,u16 entry)279 static void writeAcqScanListEntry(struct comedi_device *dev, u16 entry)
280 {
281 /* udelay(4); */
282 writew(entry & 0x00ff, dev->mmio + acqScanListFIFO);
283 /* udelay(4); */
284 writew((entry >> 8) & 0x00ff, dev->mmio + acqScanListFIFO);
285 }
286
setup_sampling(struct comedi_device * dev,int chan,int gain)287 static void setup_sampling(struct comedi_device *dev, int chan, int gain)
288 {
289 u16 word0, word1, word2, word3;
290
291 /* Channel 0-7 diff, channel 8-23 single ended */
292 word0 = 0;
293 word1 = 0x0004; /* Last scan */
294 word2 = (chan << 6) & 0x00c0;
295 switch (chan / 4) {
296 case 0:
297 word3 = 0x0001;
298 break;
299 case 1:
300 word3 = 0x0002;
301 break;
302 case 2:
303 word3 = 0x0005;
304 break;
305 case 3:
306 word3 = 0x0006;
307 break;
308 case 4:
309 word3 = 0x0041;
310 break;
311 case 5:
312 word3 = 0x0042;
313 break;
314 default:
315 word3 = 0;
316 break;
317 }
318 /*
319 dev->eeprom.correctionDACSE[i][j][k].offset = 0x800;
320 dev->eeprom.correctionDACSE[i][j][k].gain = 0xc00;
321 */
322 /* These should be read from EEPROM */
323 word2 |= 0x0800;
324 word3 |= 0xc000;
325 writeAcqScanListEntry(dev, word0);
326 writeAcqScanListEntry(dev, word1);
327 writeAcqScanListEntry(dev, word2);
328 writeAcqScanListEntry(dev, word3);
329 }
330
daqboard2000_ai_status(struct comedi_device * dev,struct comedi_subdevice * s,struct comedi_insn * insn,unsigned long context)331 static int daqboard2000_ai_status(struct comedi_device *dev,
332 struct comedi_subdevice *s,
333 struct comedi_insn *insn,
334 unsigned long context)
335 {
336 unsigned int status;
337
338 status = readw(dev->mmio + acqControl);
339 if (status & context)
340 return 0;
341 return -EBUSY;
342 }
343
daqboard2000_ai_insn_read(struct comedi_device * dev,struct comedi_subdevice * s,struct comedi_insn * insn,unsigned int * data)344 static int daqboard2000_ai_insn_read(struct comedi_device *dev,
345 struct comedi_subdevice *s,
346 struct comedi_insn *insn,
347 unsigned int *data)
348 {
349 int gain, chan;
350 int ret;
351 int i;
352
353 writew(DAQBOARD2000_AcqResetScanListFifo |
354 DAQBOARD2000_AcqResetResultsFifo |
355 DAQBOARD2000_AcqResetConfigPipe, dev->mmio + acqControl);
356
357 /*
358 * If pacer clock is not set to some high value (> 10 us), we
359 * risk multiple samples to be put into the result FIFO.
360 */
361 /* 1 second, should be long enough */
362 writel(1000000, dev->mmio + acqPacerClockDivLow);
363 writew(0, dev->mmio + acqPacerClockDivHigh);
364
365 gain = CR_RANGE(insn->chanspec);
366 chan = CR_CHAN(insn->chanspec);
367
368 /* This doesn't look efficient. I decided to take the conservative
369 * approach when I did the insn conversion. Perhaps it would be
370 * better to have broken it completely, then someone would have been
371 * forced to fix it. --ds */
372 for (i = 0; i < insn->n; i++) {
373 setup_sampling(dev, chan, gain);
374 /* Enable reading from the scanlist FIFO */
375 writew(DAQBOARD2000_SeqStartScanList, dev->mmio + acqControl);
376
377 ret = comedi_timeout(dev, s, insn, daqboard2000_ai_status,
378 DAQBOARD2000_AcqConfigPipeFull);
379 if (ret)
380 return ret;
381
382 writew(DAQBOARD2000_AdcPacerEnable, dev->mmio + acqControl);
383
384 ret = comedi_timeout(dev, s, insn, daqboard2000_ai_status,
385 DAQBOARD2000_AcqLogicScanning);
386 if (ret)
387 return ret;
388
389 ret = comedi_timeout(dev, s, insn, daqboard2000_ai_status,
390 DAQBOARD2000_AcqResultsFIFOHasValidData);
391 if (ret)
392 return ret;
393
394 data[i] = readw(dev->mmio + acqResultsFIFO);
395 writew(DAQBOARD2000_AdcPacerDisable, dev->mmio + acqControl);
396 writew(DAQBOARD2000_SeqStopScanList, dev->mmio + acqControl);
397 }
398
399 return i;
400 }
401
daqboard2000_ao_eoc(struct comedi_device * dev,struct comedi_subdevice * s,struct comedi_insn * insn,unsigned long context)402 static int daqboard2000_ao_eoc(struct comedi_device *dev,
403 struct comedi_subdevice *s,
404 struct comedi_insn *insn,
405 unsigned long context)
406 {
407 unsigned int chan = CR_CHAN(insn->chanspec);
408 unsigned int status;
409
410 status = readw(dev->mmio + dacControl);
411 if ((status & ((chan + 1) * 0x0010)) == 0)
412 return 0;
413 return -EBUSY;
414 }
415
daqboard2000_ao_insn_write(struct comedi_device * dev,struct comedi_subdevice * s,struct comedi_insn * insn,unsigned int * data)416 static int daqboard2000_ao_insn_write(struct comedi_device *dev,
417 struct comedi_subdevice *s,
418 struct comedi_insn *insn,
419 unsigned int *data)
420 {
421 unsigned int chan = CR_CHAN(insn->chanspec);
422 int i;
423
424 for (i = 0; i < insn->n; i++) {
425 unsigned int val = data[i];
426 int ret;
427
428 writew(val, dev->mmio + dacSetting(chan));
429
430 ret = comedi_timeout(dev, s, insn, daqboard2000_ao_eoc, 0);
431 if (ret)
432 return ret;
433
434 s->readback[chan] = val;
435 }
436
437 return insn->n;
438 }
439
daqboard2000_resetLocalBus(struct comedi_device * dev)440 static void daqboard2000_resetLocalBus(struct comedi_device *dev)
441 {
442 struct daqboard2000_private *devpriv = dev->private;
443
444 writel(DAQBOARD2000_SECRLocalBusHi, devpriv->plx + 0x6c);
445 mdelay(10);
446 writel(DAQBOARD2000_SECRLocalBusLo, devpriv->plx + 0x6c);
447 mdelay(10);
448 }
449
daqboard2000_reloadPLX(struct comedi_device * dev)450 static void daqboard2000_reloadPLX(struct comedi_device *dev)
451 {
452 struct daqboard2000_private *devpriv = dev->private;
453
454 writel(DAQBOARD2000_SECRReloadLo, devpriv->plx + 0x6c);
455 mdelay(10);
456 writel(DAQBOARD2000_SECRReloadHi, devpriv->plx + 0x6c);
457 mdelay(10);
458 writel(DAQBOARD2000_SECRReloadLo, devpriv->plx + 0x6c);
459 mdelay(10);
460 }
461
daqboard2000_pulseProgPin(struct comedi_device * dev)462 static void daqboard2000_pulseProgPin(struct comedi_device *dev)
463 {
464 struct daqboard2000_private *devpriv = dev->private;
465
466 writel(DAQBOARD2000_SECRProgPinHi, devpriv->plx + 0x6c);
467 mdelay(10);
468 writel(DAQBOARD2000_SECRProgPinLo, devpriv->plx + 0x6c);
469 mdelay(10); /* Not in the original code, but I like symmetry... */
470 }
471
daqboard2000_pollCPLD(struct comedi_device * dev,int mask)472 static int daqboard2000_pollCPLD(struct comedi_device *dev, int mask)
473 {
474 int result = 0;
475 int i;
476 int cpld;
477
478 /* timeout after 50 tries -> 5ms */
479 for (i = 0; i < 50; i++) {
480 cpld = readw(dev->mmio + 0x1000);
481 if ((cpld & mask) == mask) {
482 result = 1;
483 break;
484 }
485 udelay(100);
486 }
487 udelay(5);
488 return result;
489 }
490
daqboard2000_writeCPLD(struct comedi_device * dev,int data)491 static int daqboard2000_writeCPLD(struct comedi_device *dev, int data)
492 {
493 int result = 0;
494
495 udelay(10);
496 writew(data, dev->mmio + 0x1000);
497 if ((readw(dev->mmio + 0x1000) & DAQBOARD2000_CPLD_INIT) ==
498 DAQBOARD2000_CPLD_INIT) {
499 result = 1;
500 }
501 return result;
502 }
503
initialize_daqboard2000(struct comedi_device * dev,const u8 * cpld_array,size_t len,unsigned long context)504 static int initialize_daqboard2000(struct comedi_device *dev,
505 const u8 *cpld_array, size_t len,
506 unsigned long context)
507 {
508 struct daqboard2000_private *devpriv = dev->private;
509 int result = -EIO;
510 /* Read the serial EEPROM control register */
511 int secr;
512 int retry;
513 size_t i;
514
515 /* Check to make sure the serial eeprom is present on the board */
516 secr = readl(devpriv->plx + 0x6c);
517 if (!(secr & DAQBOARD2000_EEPROM_PRESENT))
518 return -EIO;
519
520 for (retry = 0; retry < 3; retry++) {
521 daqboard2000_resetLocalBus(dev);
522 daqboard2000_reloadPLX(dev);
523 daqboard2000_pulseProgPin(dev);
524 if (daqboard2000_pollCPLD(dev, DAQBOARD2000_CPLD_INIT)) {
525 for (i = 0; i < len; i++) {
526 if (cpld_array[i] == 0xff &&
527 cpld_array[i + 1] == 0x20)
528 break;
529 }
530 for (; i < len; i += 2) {
531 int data =
532 (cpld_array[i] << 8) + cpld_array[i + 1];
533 if (!daqboard2000_writeCPLD(dev, data))
534 break;
535 }
536 if (i >= len) {
537 daqboard2000_resetLocalBus(dev);
538 daqboard2000_reloadPLX(dev);
539 result = 0;
540 break;
541 }
542 }
543 }
544 return result;
545 }
546
daqboard2000_adcStopDmaTransfer(struct comedi_device * dev)547 static void daqboard2000_adcStopDmaTransfer(struct comedi_device *dev)
548 {
549 }
550
daqboard2000_adcDisarm(struct comedi_device * dev)551 static void daqboard2000_adcDisarm(struct comedi_device *dev)
552 {
553 /* Disable hardware triggers */
554 udelay(2);
555 writew(DAQBOARD2000_TrigAnalog | DAQBOARD2000_TrigDisable,
556 dev->mmio + trigControl);
557 udelay(2);
558 writew(DAQBOARD2000_TrigTTL | DAQBOARD2000_TrigDisable,
559 dev->mmio + trigControl);
560
561 /* Stop the scan list FIFO from loading the configuration pipe */
562 udelay(2);
563 writew(DAQBOARD2000_SeqStopScanList, dev->mmio + acqControl);
564
565 /* Stop the pacer clock */
566 udelay(2);
567 writew(DAQBOARD2000_AdcPacerDisable, dev->mmio + acqControl);
568
569 /* Stop the input dma (abort channel 1) */
570 daqboard2000_adcStopDmaTransfer(dev);
571 }
572
daqboard2000_activateReferenceDacs(struct comedi_device * dev)573 static void daqboard2000_activateReferenceDacs(struct comedi_device *dev)
574 {
575 unsigned int val;
576 int timeout;
577
578 /* Set the + reference dac value in the FPGA */
579 writew(0x80 | DAQBOARD2000_PosRefDacSelect, dev->mmio + refDacs);
580 for (timeout = 0; timeout < 20; timeout++) {
581 val = readw(dev->mmio + dacControl);
582 if ((val & DAQBOARD2000_RefBusy) == 0)
583 break;
584 udelay(2);
585 }
586
587 /* Set the - reference dac value in the FPGA */
588 writew(0x80 | DAQBOARD2000_NegRefDacSelect, dev->mmio + refDacs);
589 for (timeout = 0; timeout < 20; timeout++) {
590 val = readw(dev->mmio + dacControl);
591 if ((val & DAQBOARD2000_RefBusy) == 0)
592 break;
593 udelay(2);
594 }
595 }
596
daqboard2000_initializeCtrs(struct comedi_device * dev)597 static void daqboard2000_initializeCtrs(struct comedi_device *dev)
598 {
599 }
600
daqboard2000_initializeTmrs(struct comedi_device * dev)601 static void daqboard2000_initializeTmrs(struct comedi_device *dev)
602 {
603 }
604
daqboard2000_dacDisarm(struct comedi_device * dev)605 static void daqboard2000_dacDisarm(struct comedi_device *dev)
606 {
607 }
608
daqboard2000_initializeAdc(struct comedi_device * dev)609 static void daqboard2000_initializeAdc(struct comedi_device *dev)
610 {
611 daqboard2000_adcDisarm(dev);
612 daqboard2000_activateReferenceDacs(dev);
613 daqboard2000_initializeCtrs(dev);
614 daqboard2000_initializeTmrs(dev);
615 }
616
daqboard2000_initializeDac(struct comedi_device * dev)617 static void daqboard2000_initializeDac(struct comedi_device *dev)
618 {
619 daqboard2000_dacDisarm(dev);
620 }
621
daqboard2000_8255_cb(struct comedi_device * dev,int dir,int port,int data,unsigned long iobase)622 static int daqboard2000_8255_cb(struct comedi_device *dev,
623 int dir, int port, int data,
624 unsigned long iobase)
625 {
626 if (dir) {
627 writew(data, dev->mmio + iobase + port * 2);
628 return 0;
629 }
630 return readw(dev->mmio + iobase + port * 2);
631 }
632
daqboard2000_find_boardinfo(struct comedi_device * dev,struct pci_dev * pcidev)633 static const void *daqboard2000_find_boardinfo(struct comedi_device *dev,
634 struct pci_dev *pcidev)
635 {
636 const struct daq200_boardtype *board;
637 int i;
638
639 if (pcidev->subsystem_device != PCI_VENDOR_ID_IOTECH)
640 return NULL;
641
642 for (i = 0; i < ARRAY_SIZE(boardtypes); i++) {
643 board = &boardtypes[i];
644 if (pcidev->subsystem_device == board->id)
645 return board;
646 }
647 return NULL;
648 }
649
daqboard2000_auto_attach(struct comedi_device * dev,unsigned long context_unused)650 static int daqboard2000_auto_attach(struct comedi_device *dev,
651 unsigned long context_unused)
652 {
653 struct pci_dev *pcidev = comedi_to_pci_dev(dev);
654 const struct daq200_boardtype *board;
655 struct daqboard2000_private *devpriv;
656 struct comedi_subdevice *s;
657 int result;
658
659 board = daqboard2000_find_boardinfo(dev, pcidev);
660 if (!board)
661 return -ENODEV;
662 dev->board_ptr = board;
663 dev->board_name = board->name;
664
665 devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
666 if (!devpriv)
667 return -ENOMEM;
668
669 result = comedi_pci_enable(dev);
670 if (result)
671 return result;
672
673 devpriv->plx = pci_ioremap_bar(pcidev, 0);
674 dev->mmio = pci_ioremap_bar(pcidev, 2);
675 if (!devpriv->plx || !dev->mmio)
676 return -ENOMEM;
677
678 result = comedi_alloc_subdevices(dev, 3);
679 if (result)
680 return result;
681
682 readl(devpriv->plx + 0x6c);
683
684 result = comedi_load_firmware(dev, &comedi_to_pci_dev(dev)->dev,
685 DAQBOARD2000_FIRMWARE,
686 initialize_daqboard2000, 0);
687 if (result < 0)
688 return result;
689
690 daqboard2000_initializeAdc(dev);
691 daqboard2000_initializeDac(dev);
692
693 s = &dev->subdevices[0];
694 /* ai subdevice */
695 s->type = COMEDI_SUBD_AI;
696 s->subdev_flags = SDF_READABLE | SDF_GROUND;
697 s->n_chan = 24;
698 s->maxdata = 0xffff;
699 s->insn_read = daqboard2000_ai_insn_read;
700 s->range_table = &range_daqboard2000_ai;
701
702 s = &dev->subdevices[1];
703 /* ao subdevice */
704 s->type = COMEDI_SUBD_AO;
705 s->subdev_flags = SDF_WRITABLE;
706 s->n_chan = 2;
707 s->maxdata = 0xffff;
708 s->insn_write = daqboard2000_ao_insn_write;
709 s->range_table = &range_bipolar10;
710
711 result = comedi_alloc_subdev_readback(s);
712 if (result)
713 return result;
714
715 s = &dev->subdevices[2];
716 return subdev_8255_init(dev, s, daqboard2000_8255_cb,
717 dioP2ExpansionIO8Bit);
718 }
719
daqboard2000_detach(struct comedi_device * dev)720 static void daqboard2000_detach(struct comedi_device *dev)
721 {
722 struct daqboard2000_private *devpriv = dev->private;
723
724 if (devpriv && devpriv->plx)
725 iounmap(devpriv->plx);
726 comedi_pci_detach(dev);
727 }
728
729 static struct comedi_driver daqboard2000_driver = {
730 .driver_name = "daqboard2000",
731 .module = THIS_MODULE,
732 .auto_attach = daqboard2000_auto_attach,
733 .detach = daqboard2000_detach,
734 };
735
daqboard2000_pci_probe(struct pci_dev * dev,const struct pci_device_id * id)736 static int daqboard2000_pci_probe(struct pci_dev *dev,
737 const struct pci_device_id *id)
738 {
739 return comedi_pci_auto_config(dev, &daqboard2000_driver,
740 id->driver_data);
741 }
742
743 static const struct pci_device_id daqboard2000_pci_table[] = {
744 { PCI_DEVICE(PCI_VENDOR_ID_IOTECH, 0x0409) },
745 { 0 }
746 };
747 MODULE_DEVICE_TABLE(pci, daqboard2000_pci_table);
748
749 static struct pci_driver daqboard2000_pci_driver = {
750 .name = "daqboard2000",
751 .id_table = daqboard2000_pci_table,
752 .probe = daqboard2000_pci_probe,
753 .remove = comedi_pci_auto_unconfig,
754 };
755 module_comedi_pci_driver(daqboard2000_driver, daqboard2000_pci_driver);
756
757 MODULE_AUTHOR("Comedi http://www.comedi.org");
758 MODULE_DESCRIPTION("Comedi low-level driver");
759 MODULE_LICENSE("GPL");
760 MODULE_FIRMWARE(DAQBOARD2000_FIRMWARE);
761