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/* 19Driver: daqboard2000 20Description: IOTech DAQBoard/2000 21Author: Anders Blomdell <anders.blomdell@control.lth.se> 22Status: works 23Updated: Mon, 14 Apr 2008 15:28:52 +0100 24Devices: [IOTech] DAQBoard/2000 (daqboard2000) 25 26Much of the functionality of this driver was determined from reading 27the source code for the Windows driver. 28 29The FPGA on the board requires fimware, which is available from 30http://www.comedi.org in the comedi_nonfree_firmware tarball. 31 32Configuration 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 133static 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 263struct daq200_boardtype { 264 const char *name; 265 int id; 266}; 267static const struct daq200_boardtype boardtypes[] = { 268 {"ids2", DAQBOARD2000_SUBSYSTEM_IDS2}, 269 {"ids4", DAQBOARD2000_SUBSYSTEM_IDS4}, 270}; 271 272struct daqboard2000_private { 273 enum { 274 card_daqboard_2000 275 } card; 276 void __iomem *plx; 277}; 278 279static 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 287static 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 331static 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 344static 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 402static 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 416static 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 440static 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 450static 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 462static 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 472static 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 491static 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 504static 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 547static void daqboard2000_adcStopDmaTransfer(struct comedi_device *dev) 548{ 549} 550 551static 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 573static 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 597static void daqboard2000_initializeCtrs(struct comedi_device *dev) 598{ 599} 600 601static void daqboard2000_initializeTmrs(struct comedi_device *dev) 602{ 603} 604 605static void daqboard2000_dacDisarm(struct comedi_device *dev) 606{ 607} 608 609static 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 617static void daqboard2000_initializeDac(struct comedi_device *dev) 618{ 619 daqboard2000_dacDisarm(dev); 620} 621 622static 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 633static 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 650static 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 result = subdev_8255_init(dev, s, daqboard2000_8255_cb, 717 dioP2ExpansionIO8Bit); 718 if (result) 719 return result; 720 721 return 0; 722} 723 724static void daqboard2000_detach(struct comedi_device *dev) 725{ 726 struct daqboard2000_private *devpriv = dev->private; 727 728 if (devpriv && devpriv->plx) 729 iounmap(devpriv->plx); 730 comedi_pci_detach(dev); 731} 732 733static struct comedi_driver daqboard2000_driver = { 734 .driver_name = "daqboard2000", 735 .module = THIS_MODULE, 736 .auto_attach = daqboard2000_auto_attach, 737 .detach = daqboard2000_detach, 738}; 739 740static int daqboard2000_pci_probe(struct pci_dev *dev, 741 const struct pci_device_id *id) 742{ 743 return comedi_pci_auto_config(dev, &daqboard2000_driver, 744 id->driver_data); 745} 746 747static const struct pci_device_id daqboard2000_pci_table[] = { 748 { PCI_DEVICE(PCI_VENDOR_ID_IOTECH, 0x0409) }, 749 { 0 } 750}; 751MODULE_DEVICE_TABLE(pci, daqboard2000_pci_table); 752 753static struct pci_driver daqboard2000_pci_driver = { 754 .name = "daqboard2000", 755 .id_table = daqboard2000_pci_table, 756 .probe = daqboard2000_pci_probe, 757 .remove = comedi_pci_auto_unconfig, 758}; 759module_comedi_pci_driver(daqboard2000_driver, daqboard2000_pci_driver); 760 761MODULE_AUTHOR("Comedi http://www.comedi.org"); 762MODULE_DESCRIPTION("Comedi low-level driver"); 763MODULE_LICENSE("GPL"); 764MODULE_FIRMWARE(DAQBOARD2000_FIRMWARE); 765