drivers/staging/comedi/drivers/daqboard2000.c

   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    You should have received a copy of the GNU General Public License
  19    along with this program; if not, write to the Free Software
  20    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21
  22  */
  23 /*
  24 Driver: daqboard2000
  25 Description: IOTech DAQBoard/2000
  26 Author: Anders Blomdell <anders.blomdell@control.lth.se>
  27 Status: works
  28 Updated: Mon, 14 Apr 2008 15:28:52 +0100
  29 Devices: [IOTech] DAQBoard/2000 (daqboard2000)
  30
  31 Much of the functionality of this driver was determined from reading
  32 the source code for the Windows driver.
  33
  34 The FPGA on the board requires initialization code, which can
  35 be loaded by comedi_config using the -i
  36 option.  The initialization code is available from http://www.comedi.org
  37 in the comedi_nonfree_firmware tarball.
  38
  39 Configuration options:
  40   [0] - PCI bus of device (optional)
  41   [1] - PCI slot of device (optional)
  42   If bus/slot is not specified, the first supported
  43   PCI device found will be used.
  44 */
  45 /*
  46    This card was obviously never intended to leave the Windows world,
  47    since it lacked all kind of hardware documentation (except for cable
  48    pinouts, plug and pray has something to catch up with yet).
  49
  50    With some help from our swedish distributor, we got the Windows sourcecode
  51    for the card, and here are the findings so far.
  52
  53    1. A good document that describes the PCI interface chip is found at:
  54       http://plx.plxtech.com/download/9080/databook/9080db-106.pdf
  55
  56    2. The initialization done so far is:
  57         a. program the FPGA (windows code sans a lot of error messages)
  58         b.
  59
  60    3. Analog out seems to work OK with DAC's disabled, if DAC's are enabled,
  61       you have to output values to all enabled DAC's until result appears, I
  62       guess that it has something to do with pacer clocks, but the source
  63       gives me no clues. I'll keep it simple so far.
  64
  65    4. Analog in.
  66         Each channel in the scanlist seems to be controlled by four
  67         control words:
  68
  69         Word0:
  70           +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  71           ! | | | ! | | | ! | | | ! | | | !
  72           +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  73
  74         Word1:
  75           +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  76           ! | | | ! | | | ! | | | ! | | | !
  77           +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  78            |             |       | | | | |
  79            +------+------+       | | | | +-- Digital input (??)
  80                   |              | | | +---- 10 us settling time
  81                   |              | | +------ Suspend acquisition (last to scan)
  82                   |              | +-------- Simultaneous sample and hold
  83                   |              +---------- Signed data format
  84                   +------------------------- Correction offset low
  85
  86         Word2:
  87           +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  88           ! | | | ! | | | ! | | | ! | | | !
  89           +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  90            |     | |     | | | | | |     |
  91            +-----+ +--+--+ +++ +++ +--+--+
  92               |       |     |   |     +----- Expansion channel
  93               |       |     |   +----------- Expansion gain
  94               |       |     +--------------- Channel (low)
  95               |       +--------------------- Correction offset high
  96               +----------------------------- Correction gain low
  97         Word3:
  98           +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  99           ! | | | ! | | | ! | | | ! | | | !
 100           +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 101            |             | | | |   | | | |
 102            +------+------+ | | +-+-+ | | +-- Low bank enable
 103                   |        | |   |   | +---- High bank enable
 104                   |        | |   |   +------ Hi/low select
 105                   |        | |   +---------- Gain (1,?,2,4,8,16,32,64)
 106                   |        | +-------------- differential/single ended
 107                   |        +---------------- Unipolar
 108                   +------------------------- Correction gain high
 109
 110
 111
 112    999. The card seems to have an incredible amount of capabilities, but
 113         trying to reverse engineer them from the Windows source is beyond my
 114         patience.
 115
 116
 117  */
 118
 119 #include "../comedidev.h"
 120
 121 #include <linux/delay.h>
 122
 123 #include "comedi_pci.h"
 124 #include "8255.h"
 125
 126 #define DAQBOARD2000_SUBSYSTEM_IDS2     0x00021616      /* Daqboard/2000 - 2 Dacs */
 127 #define DAQBOARD2000_SUBSYSTEM_IDS4     0x00041616      /* Daqboard/2000 - 4 Dacs */
 128
 129 #define DAQBOARD2000_DAQ_SIZE           0x1002
 130 #define DAQBOARD2000_PLX_SIZE           0x100
 131
 132 // Initialization bits for the Serial EEPROM Control Register
 133 #define DAQBOARD2000_SECRProgPinHi      0x8001767e
 134 #define DAQBOARD2000_SECRProgPinLo      0x8000767e
 135 #define DAQBOARD2000_SECRLocalBusHi     0xc000767e
 136 #define DAQBOARD2000_SECRLocalBusLo     0x8000767e
 137 #define DAQBOARD2000_SECRReloadHi       0xa000767e
 138 #define DAQBOARD2000_SECRReloadLo       0x8000767e
 139
 140 // SECR status bits
 141 #define DAQBOARD2000_EEPROM_PRESENT     0x10000000
 142
 143 // CPLD status bits
 144 #define DAQBOARD2000_CPLD_INIT          0x0002
 145 #define DAQBOARD2000_CPLD_DONE          0x0004
 146
 147 // Available ranges
 148 static const struct comedi_lrange range_daqboard2000_ai = { 13, {
 149                         RANGE(-10, 10),
 150                         RANGE(-5, 5),
 151                         RANGE(-2.5, 2.5),
 152                         RANGE(-1.25, 1.25),
 153                         RANGE(-0.625, 0.625),
 154                         RANGE(-0.3125, 0.3125),
 155                         RANGE(-0.156, 0.156),
 156                         RANGE(0, 10),
 157                         RANGE(0, 5),
 158                         RANGE(0, 2.5),
 159                         RANGE(0, 1.25),
 160                         RANGE(0, 0.625),
 161                         RANGE(0, 0.3125)
 162         }
 163 };
 164
 165 static const struct comedi_lrange range_daqboard2000_ao = { 1, {
 166                         RANGE(-10, 10)
 167         }
 168 };
 169
 170 typedef struct daqboard2000_hw {
 171         volatile u16 acqControl;        // 0x00
 172         volatile u16 acqScanListFIFO;   // 0x02
 173         volatile u32 acqPacerClockDivLow;       // 0x04
 174
 175         volatile u16 acqScanCounter;    // 0x08
 176         volatile u16 acqPacerClockDivHigh;      // 0x0a
 177         volatile u16 acqTriggerCount;   // 0x0c
 178         volatile u16 fill2;     // 0x0e
 179         volatile u16 acqResultsFIFO;    // 0x10
 180         volatile u16 fill3;     // 0x12
 181         volatile u16 acqResultsShadow;  // 0x14
 182         volatile u16 fill4;     // 0x16
 183         volatile u16 acqAdcResult;      // 0x18
 184         volatile u16 fill5;     // 0x1a
 185         volatile u16 dacScanCounter;    // 0x1c
 186         volatile u16 fill6;     // 0x1e
 187
 188         volatile u16 dacControl;        // 0x20
 189         volatile u16 fill7;     // 0x22
 190         volatile s16 dacFIFO;   // 0x24
 191         volatile u16 fill8[2];  // 0x26
 192         volatile u16 dacPacerClockDiv;  // 0x2a
 193         volatile u16 refDacs;   // 0x2c
 194         volatile u16 fill9;     // 0x2e
 195
 196         volatile u16 dioControl;        // 0x30
 197         volatile s16 dioP3hsioData;     // 0x32
 198         volatile u16 dioP3Control;      // 0x34
 199         volatile u16 calEepromControl;  // 0x36
 200         volatile s16 dacSetting[4];     // 0x38
 201         volatile s16 dioP2ExpansionIO8Bit[32];  // 0x40
 202
 203         volatile u16 ctrTmrControl;     // 0x80
 204         volatile u16 fill10[3]; // 0x82
 205         volatile s16 ctrInput[4];       // 0x88
 206         volatile u16 fill11[8]; // 0x90
 207         volatile u16 timerDivisor[2];   // 0xa0
 208         volatile u16 fill12[6]; // 0xa4
 209
 210         volatile u16 dmaControl;        // 0xb0
 211         volatile u16 trigControl;       // 0xb2
 212         volatile u16 fill13[2]; // 0xb4
 213         volatile u16 calEeprom; // 0xb8
 214         volatile u16 acqDigitalMark;    // 0xba
 215         volatile u16 trigDacs;  // 0xbc
 216         volatile u16 fill14;    // 0xbe
 217         volatile s16 dioP2ExpansionIO16Bit[32]; // 0xc0
 218 } daqboard2000_hw;
 219
 220 /* Scan Sequencer programming */
 221 #define DAQBOARD2000_SeqStartScanList            0x0011
 222 #define DAQBOARD2000_SeqStopScanList             0x0010
 223
 224 // Prepare for acquisition
 225 #define DAQBOARD2000_AcqResetScanListFifo        0x0004
 226 #define DAQBOARD2000_AcqResetResultsFifo         0x0002
 227 #define DAQBOARD2000_AcqResetConfigPipe          0x0001
 228
 229 // Acqusition status bits
 230 #define DAQBOARD2000_AcqResultsFIFOMore1Sample   0x0001
 231 #define DAQBOARD2000_AcqResultsFIFOHasValidData  0x0002
 232 #define DAQBOARD2000_AcqResultsFIFOOverrun       0x0004
 233 #define DAQBOARD2000_AcqLogicScanning            0x0008
 234 #define DAQBOARD2000_AcqConfigPipeFull           0x0010
 235 #define DAQBOARD2000_AcqScanListFIFOEmpty        0x0020
 236 #define DAQBOARD2000_AcqAdcNotReady              0x0040
 237 #define DAQBOARD2000_ArbitrationFailure          0x0080
 238 #define DAQBOARD2000_AcqPacerOverrun             0x0100
 239 #define DAQBOARD2000_DacPacerOverrun             0x0200
 240 #define DAQBOARD2000_AcqHardwareError            0x01c0
 241
 242 // Scan Sequencer programming
 243 #define DAQBOARD2000_SeqStartScanList            0x0011
 244 #define DAQBOARD2000_SeqStopScanList             0x0010
 245
 246 /* Pacer Clock Control */
 247 #define DAQBOARD2000_AdcPacerInternal            0x0030
 248 #define DAQBOARD2000_AdcPacerExternal            0x0032
 249 #define DAQBOARD2000_AdcPacerEnable              0x0031
 250 #define DAQBOARD2000_AdcPacerEnableDacPacer      0x0034
 251 #define DAQBOARD2000_AdcPacerDisable             0x0030
 252 #define DAQBOARD2000_AdcPacerNormalMode          0x0060
 253 #define DAQBOARD2000_AdcPacerCompatibilityMode   0x0061
 254 #define DAQBOARD2000_AdcPacerInternalOutEnable   0x0008
 255 #define DAQBOARD2000_AdcPacerExternalRising      0x0100
 256
 257 // DAC status
 258 #define DAQBOARD2000_DacFull                     0x0001
 259 #define DAQBOARD2000_RefBusy                     0x0002
 260 #define DAQBOARD2000_TrgBusy                     0x0004
 261 #define DAQBOARD2000_CalBusy                     0x0008
 262 #define DAQBOARD2000_Dac0Busy                    0x0010
 263 #define DAQBOARD2000_Dac1Busy                    0x0020
 264 #define DAQBOARD2000_Dac2Busy                    0x0040
 265 #define DAQBOARD2000_Dac3Busy                    0x0080
 266
 267 // DAC control
 268 #define DAQBOARD2000_Dac0Enable                  0x0021
 269 #define DAQBOARD2000_Dac1Enable                  0x0031
 270 #define DAQBOARD2000_Dac2Enable                  0x0041
 271 #define DAQBOARD2000_Dac3Enable                  0x0051
 272 #define DAQBOARD2000_DacEnableBit                0x0001
 273 #define DAQBOARD2000_Dac0Disable                 0x0020
 274 #define DAQBOARD2000_Dac1Disable                 0x0030
 275 #define DAQBOARD2000_Dac2Disable                 0x0040
 276 #define DAQBOARD2000_Dac3Disable                 0x0050
 277 #define DAQBOARD2000_DacResetFifo                0x0004
 278 #define DAQBOARD2000_DacPatternDisable           0x0060
 279 #define DAQBOARD2000_DacPatternEnable            0x0061
 280 #define DAQBOARD2000_DacSelectSignedData         0x0002
 281 #define DAQBOARD2000_DacSelectUnsignedData       0x0000
 282
 283 /* Trigger Control */
 284 #define DAQBOARD2000_TrigAnalog                  0x0000
 285 #define DAQBOARD2000_TrigTTL                     0x0010
 286 #define DAQBOARD2000_TrigTransHiLo               0x0004
 287 #define DAQBOARD2000_TrigTransLoHi               0x0000
 288 #define DAQBOARD2000_TrigAbove                   0x0000
 289 #define DAQBOARD2000_TrigBelow                   0x0004
 290 #define DAQBOARD2000_TrigLevelSense              0x0002
 291 #define DAQBOARD2000_TrigEdgeSense               0x0000
 292 #define DAQBOARD2000_TrigEnable                  0x0001
 293 #define DAQBOARD2000_TrigDisable                 0x0000
 294
 295 // Reference Dac Selection
 296 #define DAQBOARD2000_PosRefDacSelect             0x0100
 297 #define DAQBOARD2000_NegRefDacSelect             0x0000
 298
 299 static int daqboard2000_attach(struct comedi_device * dev, struct comedi_devconfig * it);
 300 static int daqboard2000_detach(struct comedi_device * dev);
 301
 302 static struct comedi_driver driver_daqboard2000 = {
 303       driver_name:"daqboard2000",
 304       module:THIS_MODULE,
 305       attach:daqboard2000_attach,
 306       detach:daqboard2000_detach,
 307 };
 308
 309 typedef struct {
 310         const char *name;
 311         int id;
 312 } boardtype;
 313 static const boardtype boardtypes[] = {
 314         {"ids2", DAQBOARD2000_SUBSYSTEM_IDS2},
 315         {"ids4", DAQBOARD2000_SUBSYSTEM_IDS4},
 316 };
 317
 318 #define n_boardtypes (sizeof(boardtypes)/sizeof(boardtype))
 319 #define this_board ((const boardtype *)dev->board_ptr)
 320
 321 static DEFINE_PCI_DEVICE_TABLE(daqboard2000_pci_table) = {
 322         {0x1616, 0x0409, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
 323         {0}
 324 };
 325
 326 MODULE_DEVICE_TABLE(pci, daqboard2000_pci_table);
 327
 328 typedef struct {
 329         enum {
 330                 card_daqboard_2000
 331         } card;
 332         struct pci_dev *pci_dev;
 333         void *daq;
 334         void *plx;
 335         int got_regions;
 336         unsigned int ao_readback[2];
 337 } daqboard2000_private;
 338
 339 #define devpriv ((daqboard2000_private*)dev->private)
 340
 341 static void writeAcqScanListEntry(struct comedi_device * dev, u16 entry)
 342 {
 343         daqboard2000_hw *fpga = devpriv->daq;
 344
 345 //  comedi_udelay(4);
 346         fpga->acqScanListFIFO = entry & 0x00ff;
 347 //  comedi_udelay(4);
 348         fpga->acqScanListFIFO = (entry >> 8) & 0x00ff;
 349 }
 350
 351 static void setup_sampling(struct comedi_device * dev, int chan, int gain)
 352 {
 353         u16 word0, word1, word2, word3;
 354
 355         /* Channel 0-7 diff, channel 8-23 single ended */
 356         word0 = 0;
 357         word1 = 0x0004;         /* Last scan */
 358         word2 = (chan << 6) & 0x00c0;
 359         switch (chan / 4) {
 360         case 0:
 361                 word3 = 0x0001;
 362                 break;
 363         case 1:
 364                 word3 = 0x0002;
 365                 break;
 366         case 2:
 367                 word3 = 0x0005;
 368                 break;
 369         case 3:
 370                 word3 = 0x0006;
 371                 break;
 372         case 4:
 373                 word3 = 0x0041;
 374                 break;
 375         case 5:
 376                 word3 = 0x0042;
 377                 break;
 378         default:
 379                 word3 = 0;
 380                 break;
 381         }
 382 /*
 383   dev->eeprom.correctionDACSE[i][j][k].offset = 0x800;
 384   dev->eeprom.correctionDACSE[i][j][k].gain = 0xc00;
 385 */
 386         /* These should be read from EEPROM */
 387         word2 |= 0x0800;
 388         word3 |= 0xc000;
 389 /*  printk("%d %4.4x %4.4x %4.4x %4.4x\n", chan, word0, word1, word2, word3);*/
 390         writeAcqScanListEntry(dev, word0);
 391         writeAcqScanListEntry(dev, word1);
 392         writeAcqScanListEntry(dev, word2);
 393         writeAcqScanListEntry(dev, word3);
 394 }
 395
 396 static int daqboard2000_ai_insn_read(struct comedi_device * dev, struct comedi_subdevice * s,
 397         struct comedi_insn * insn, unsigned int * data)
 398 {
 399         int i;
 400         daqboard2000_hw *fpga = devpriv->daq;
 401         int gain, chan, timeout;
 402
 403         fpga->acqControl =
 404                 DAQBOARD2000_AcqResetScanListFifo |
 405                 DAQBOARD2000_AcqResetResultsFifo |
 406                 DAQBOARD2000_AcqResetConfigPipe;
 407
 408         /* If pacer clock is not set to some high value (> 10 us), we
 409            risk multiple samples to be put into the result FIFO. */
 410         fpga->acqPacerClockDivLow = 1000000;    /* 1 second, should be long enough */
 411         fpga->acqPacerClockDivHigh = 0;
 412
 413         gain = CR_RANGE(insn->chanspec);
 414         chan = CR_CHAN(insn->chanspec);
 415
 416         /* This doesn't look efficient.  I decided to take the conservative
 417          * approach when I did the insn conversion.  Perhaps it would be
 418          * better to have broken it completely, then someone would have been
 419          * forced to fix it.  --ds */
 420         for (i = 0; i < insn->n; i++) {
 421                 setup_sampling(dev, chan, gain);
 422                 /* Enable reading from the scanlist FIFO */
 423                 fpga->acqControl = DAQBOARD2000_SeqStartScanList;
 424                 for (timeout = 0; timeout < 20; timeout++) {
 425                         if (fpga->acqControl & DAQBOARD2000_AcqConfigPipeFull) {
 426                                 break;
 427                         }
 428                         //comedi_udelay(2);
 429                 }
 430                 fpga->acqControl = DAQBOARD2000_AdcPacerEnable;
 431                 for (timeout = 0; timeout < 20; timeout++) {
 432                         if (fpga->acqControl & DAQBOARD2000_AcqLogicScanning) {
 433                                 break;
 434                         }
 435                         //comedi_udelay(2);
 436                 }
 437                 for (timeout = 0; timeout < 20; timeout++) {
 438                         if (fpga->
 439                                 acqControl &
 440                                 DAQBOARD2000_AcqResultsFIFOHasValidData) {
 441                                 break;
 442                         }
 443                         //comedi_udelay(2);
 444                 }
 445                 data[i] = fpga->acqResultsFIFO;
 446                 fpga->acqControl = DAQBOARD2000_AdcPacerDisable;
 447                 fpga->acqControl = DAQBOARD2000_SeqStopScanList;
 448         }
 449
 450         return i;
 451 }
 452
 453 static int daqboard2000_ao_insn_read(struct comedi_device * dev, struct comedi_subdevice * s,
 454         struct comedi_insn * insn, unsigned int * data)
 455 {
 456         int i;
 457         int chan = CR_CHAN(insn->chanspec);
 458
 459         for (i = 0; i < insn->n; i++) {
 460                 data[i] = devpriv->ao_readback[chan];
 461         }
 462
 463         return i;
 464 }
 465
 466 static int daqboard2000_ao_insn_write(struct comedi_device * dev, struct comedi_subdevice * s,
 467         struct comedi_insn * insn, unsigned int * data)
 468 {
 469         int i;
 470         int chan = CR_CHAN(insn->chanspec);
 471         daqboard2000_hw *fpga = devpriv->daq;
 472         int timeout;
 473
 474         for (i = 0; i < insn->n; i++) {
 475                 /*
 476                  * OK, since it works OK without enabling the DAC's, let's keep
 477                  * it as simple as possible...
 478                  */
 479                 //fpga->dacControl = (chan + 2) * 0x0010 | 0x0001; comedi_udelay(1000);
 480                 fpga->dacSetting[chan] = data[i];
 481                 for (timeout = 0; timeout < 20; timeout++) {
 482                         if ((fpga->dacControl & ((chan + 1) * 0x0010)) == 0) {
 483                                 break;
 484                         }
 485                         //comedi_udelay(2);
 486                 }
 487                 devpriv->ao_readback[chan] = data[i];
 488                 /*
 489                  * Since we never enabled the DAC's, we don't need to disable it...
 490                  * fpga->dacControl = (chan + 2) * 0x0010 | 0x0000; comedi_udelay(1000);
 491                  */
 492         }
 493
 494         return i;
 495 }
 496
 497 static void daqboard2000_resetLocalBus(struct comedi_device * dev)
 498 {
 499         printk("daqboard2000_resetLocalBus\n");
 500         writel(DAQBOARD2000_SECRLocalBusHi, devpriv->plx + 0x6c);
 501         comedi_udelay(10000);
 502         writel(DAQBOARD2000_SECRLocalBusLo, devpriv->plx + 0x6c);
 503         comedi_udelay(10000);
 504 }
 505
 506 static void daqboard2000_reloadPLX(struct comedi_device * dev)
 507 {
 508         printk("daqboard2000_reloadPLX\n");
 509         writel(DAQBOARD2000_SECRReloadLo, devpriv->plx + 0x6c);
 510         comedi_udelay(10000);
 511         writel(DAQBOARD2000_SECRReloadHi, devpriv->plx + 0x6c);
 512         comedi_udelay(10000);
 513         writel(DAQBOARD2000_SECRReloadLo, devpriv->plx + 0x6c);
 514         comedi_udelay(10000);
 515 }
 516
 517 static void daqboard2000_pulseProgPin(struct comedi_device * dev)
 518 {
 519         printk("daqboard2000_pulseProgPin 1\n");
 520         writel(DAQBOARD2000_SECRProgPinHi, devpriv->plx + 0x6c);
 521         comedi_udelay(10000);
 522         writel(DAQBOARD2000_SECRProgPinLo, devpriv->plx + 0x6c);
 523         comedi_udelay(10000);   /* Not in the original code, but I like symmetry... */
 524 }
 525
 526 static int daqboard2000_pollCPLD(struct comedi_device * dev, int mask)
 527 {
 528         int result = 0;
 529         int i;
 530         int cpld;
 531
 532         /* timeout after 50 tries -> 5ms */
 533         for (i = 0; i < 50; i++) {
 534                 cpld = readw(devpriv->daq + 0x1000);
 535                 if ((cpld & mask) == mask) {
 536                         result = 1;
 537                         break;
 538                 }
 539                 comedi_udelay(100);
 540         }
 541         comedi_udelay(5);
 542         return result;
 543 }
 544
 545 static int daqboard2000_writeCPLD(struct comedi_device * dev, int data)
 546 {
 547         int result = 0;
 548
 549         comedi_udelay(10);
 550         writew(data, devpriv->daq + 0x1000);
 551         if ((readw(devpriv->daq + 0x1000) & DAQBOARD2000_CPLD_INIT) ==
 552                 DAQBOARD2000_CPLD_INIT) {
 553                 result = 1;
 554         }
 555         return result;
 556 }
 557
 558 static int initialize_daqboard2000(struct comedi_device * dev,
 559         unsigned char *cpld_array, int len)
 560 {
 561         int result = -EIO;
 562         /* Read the serial EEPROM control register */
 563         int secr;
 564         int retry;
 565         int i;
 566
 567         /* Check to make sure the serial eeprom is present on the board */
 568         secr = readl(devpriv->plx + 0x6c);
 569         if (!(secr & DAQBOARD2000_EEPROM_PRESENT)) {
 570 #ifdef DEBUG_EEPROM
 571                 printk("no serial eeprom\n");
 572 #endif
 573                 return -EIO;
 574         }
 575
 576         for (retry = 0; retry < 3; retry++) {
 577 #ifdef DEBUG_EEPROM
 578                 printk("Programming EEPROM try %x\n", retry);
 579 #endif
 580
 581                 daqboard2000_resetLocalBus(dev);
 582                 daqboard2000_reloadPLX(dev);
 583                 daqboard2000_pulseProgPin(dev);
 584                 if (daqboard2000_pollCPLD(dev, DAQBOARD2000_CPLD_INIT)) {
 585                         for (i = 0; i < len; i++) {
 586                                 if (cpld_array[i] == 0xff
 587                                         && cpld_array[i + 1] == 0x20) {
 588 #ifdef DEBUG_EEPROM
 589                                         printk("Preamble found at %d\n", i);
 590 #endif
 591                                         break;
 592                                 }
 593                         }
 594                         for (; i < len; i += 2) {
 595                                 int data =
 596                                         (cpld_array[i] << 8) + cpld_array[i +
 597                                         1];
 598                                 if (!daqboard2000_writeCPLD(dev, data)) {
 599                                         break;
 600                                 }
 601                         }
 602                         if (i >= len) {
 603 #ifdef DEBUG_EEPROM
 604                                 printk("Programmed\n");
 605 #endif
 606                                 daqboard2000_resetLocalBus(dev);
 607                                 daqboard2000_reloadPLX(dev);
 608                                 result = 0;
 609                                 break;
 610                         }
 611                 }
 612         }
 613         return result;
 614 }
 615
 616 static void daqboard2000_adcStopDmaTransfer(struct comedi_device * dev)
 617 {
 618 /*  printk("Implement: daqboard2000_adcStopDmaTransfer\n");*/
 619 }
 620
 621 static void daqboard2000_adcDisarm(struct comedi_device * dev)
 622 {
 623         daqboard2000_hw *fpga = devpriv->daq;
 624
 625         /* Disable hardware triggers */
 626         comedi_udelay(2);
 627         fpga->trigControl = DAQBOARD2000_TrigAnalog | DAQBOARD2000_TrigDisable;
 628         comedi_udelay(2);
 629         fpga->trigControl = DAQBOARD2000_TrigTTL | DAQBOARD2000_TrigDisable;
 630
 631         /* Stop the scan list FIFO from loading the configuration pipe */
 632         comedi_udelay(2);
 633         fpga->acqControl = DAQBOARD2000_SeqStopScanList;
 634
 635         /* Stop the pacer clock */
 636         comedi_udelay(2);
 637         fpga->acqControl = DAQBOARD2000_AdcPacerDisable;
 638
 639         /* Stop the input dma (abort channel 1) */
 640         daqboard2000_adcStopDmaTransfer(dev);
 641 }
 642
 643 static void daqboard2000_activateReferenceDacs(struct comedi_device * dev)
 644 {
 645         daqboard2000_hw *fpga = devpriv->daq;
 646         int timeout;
 647
 648         // Set the + reference dac value in the FPGA
 649         fpga->refDacs = 0x80 | DAQBOARD2000_PosRefDacSelect;
 650         for (timeout = 0; timeout < 20; timeout++) {
 651                 if ((fpga->dacControl & DAQBOARD2000_RefBusy) == 0) {
 652                         break;
 653                 }
 654                 comedi_udelay(2);
 655         }
 656 /*  printk("DAQBOARD2000_PosRefDacSelect %d\n", timeout);*/
 657
 658         // Set the - reference dac value in the FPGA
 659         fpga->refDacs = 0x80 | DAQBOARD2000_NegRefDacSelect;
 660         for (timeout = 0; timeout < 20; timeout++) {
 661                 if ((fpga->dacControl & DAQBOARD2000_RefBusy) == 0) {
 662                         break;
 663                 }
 664                 comedi_udelay(2);
 665         }
 666 /*  printk("DAQBOARD2000_NegRefDacSelect %d\n", timeout);*/
 667 }
 668
 669 static void daqboard2000_initializeCtrs(struct comedi_device * dev)
 670 {
 671 /*  printk("Implement: daqboard2000_initializeCtrs\n");*/
 672 }
 673
 674 static void daqboard2000_initializeTmrs(struct comedi_device * dev)
 675 {
 676 /*  printk("Implement: daqboard2000_initializeTmrs\n");*/
 677 }
 678
 679 static void daqboard2000_dacDisarm(struct comedi_device * dev)
 680 {
 681 /*  printk("Implement: daqboard2000_dacDisarm\n");*/
 682 }
 683
 684 static void daqboard2000_initializeAdc(struct comedi_device * dev)
 685 {
 686         daqboard2000_adcDisarm(dev);
 687         daqboard2000_activateReferenceDacs(dev);
 688         daqboard2000_initializeCtrs(dev);
 689         daqboard2000_initializeTmrs(dev);
 690 }
 691
 692 static void daqboard2000_initializeDac(struct comedi_device * dev)
 693 {
 694         daqboard2000_dacDisarm(dev);
 695 }
 696
 697 /*
 698 The test command, REMOVE!!:
 699
 700 rmmod daqboard2000 ; rmmod comedi; make install ; modprobe daqboard2000; /usr/sbin/comedi_config /dev/comedi0 daqboard/2000 ; tail -40 /var/log/messages
 701 */
 702
 703 static int daqboard2000_8255_cb(int dir, int port, int data,
 704         unsigned long ioaddr)
 705 {
 706         int result = 0;
 707         if (dir) {
 708                 writew(data, ((void *)ioaddr) + port * 2);
 709                 result = 0;
 710         } else {
 711                 result = readw(((void *)ioaddr) + port * 2);
 712         }
 713 /*
 714   printk("daqboard2000_8255_cb %x %d %d %2.2x -> %2.2x\n",
 715         arg, dir, port, data, result);
 716 */
 717         return result;
 718 }
 719
 720 static int daqboard2000_attach(struct comedi_device * dev, struct comedi_devconfig * it)
 721 {
 722         int result = 0;
 723         struct comedi_subdevice *s;
 724         struct pci_dev *card = NULL;
 725         void *aux_data;
 726         unsigned int aux_len;
 727         int bus, slot;
 728
 729         printk("comedi%d: daqboard2000:", dev->minor);
 730
 731         bus = it->options[0];
 732         slot = it->options[1];
 733
 734         result = alloc_private(dev, sizeof(daqboard2000_private));
 735         if (result < 0) {
 736                 return -ENOMEM;
 737         }
 738         for (card = pci_get_device(0x1616, 0x0409, NULL);
 739                 card != NULL;
 740                 card = pci_get_device(0x1616, 0x0409, card)) {
 741                 if (bus || slot) {
 742                         /* requested particular bus/slot */
 743                         if (card->bus->number != bus ||
 744                                 PCI_SLOT(card->devfn) != slot) {
 745                                 continue;
 746                         }
 747                 }
 748                 break;  /* found one */
 749         }
 750         if (!card) {
 751                 if (bus || slot)
 752                         printk(" no daqboard2000 found at bus/slot: %d/%d\n",
 753                                 bus, slot);
 754                 else
 755                         printk(" no daqboard2000 found\n");
 756                 return -EIO;
 757         } else {
 758                 u32 id;
 759                 int i;
 760                 devpriv->pci_dev = card;
 761                 id = ((u32) card->subsystem_device << 16) | card->
 762                         subsystem_vendor;
 763                 for (i = 0; i < n_boardtypes; i++) {
 764                         if (boardtypes[i].id == id) {
 765                                 printk(" %s", boardtypes[i].name);
 766                                 dev->board_ptr = boardtypes + i;
 767                         }
 768                 }
 769                 if (!dev->board_ptr) {
 770                         printk(" unknown subsystem id %08x (pretend it is an ids2)", id);
 771                         dev->board_ptr = boardtypes;
 772                 }
 773         }
 774
 775         if ((result = comedi_pci_enable(card, "daqboard2000")) < 0) {
 776                 printk(" failed to enable PCI device and request regions\n");
 777                 return -EIO;
 778         }
 779         devpriv->got_regions = 1;
 780         devpriv->plx =
 781                 ioremap(pci_resource_start(card, 0), DAQBOARD2000_PLX_SIZE);
 782         devpriv->daq =
 783                 ioremap(pci_resource_start(card, 2), DAQBOARD2000_DAQ_SIZE);
 784         if (!devpriv->plx || !devpriv->daq) {
 785                 return -ENOMEM;
 786         }
 787
 788         result = alloc_subdevices(dev, 3);
 789         if (result < 0)
 790                 goto out;
 791
 792         readl(devpriv->plx + 0x6c);
 793
 794         /*
 795            u8 interrupt;
 796            Windows code does restore interrupts, but since we don't use them...
 797            pci_read_config_byte(card, PCI_INTERRUPT_LINE, &interrupt);
 798            printk("Interrupt before is: %x\n", interrupt);
 799          */
 800
 801         aux_data = comedi_aux_data(it->options, 0);
 802         aux_len = it->options[COMEDI_DEVCONF_AUX_DATA_LENGTH];
 803
 804         if (aux_data && aux_len) {
 805                 result = initialize_daqboard2000(dev, aux_data, aux_len);
 806         } else {
 807                 printk("no FPGA initialization code, aborting\n");
 808                 result = -EIO;
 809         }
 810         if (result < 0)
 811                 goto out;
 812         daqboard2000_initializeAdc(dev);
 813         daqboard2000_initializeDac(dev);
 814         /*
 815            Windows code does restore interrupts, but since we don't use them...
 816            pci_read_config_byte(card, PCI_INTERRUPT_LINE, &interrupt);
 817            printk("Interrupt after is: %x\n", interrupt);
 818          */
 819
 820         dev->iobase = (unsigned long)devpriv->daq;
 821
 822         dev->board_name = this_board->name;
 823
 824         s = dev->subdevices + 0;
 825         /* ai subdevice */
 826         s->type = COMEDI_SUBD_AI;
 827         s->subdev_flags = SDF_READABLE | SDF_GROUND;
 828         s->n_chan = 24;
 829         s->maxdata = 0xffff;
 830         s->insn_read = daqboard2000_ai_insn_read;
 831         s->range_table = &range_daqboard2000_ai;
 832
 833         s = dev->subdevices + 1;
 834         /* ao subdevice */
 835         s->type = COMEDI_SUBD_AO;
 836         s->subdev_flags = SDF_WRITABLE;
 837         s->n_chan = 2;
 838         s->maxdata = 0xffff;
 839         s->insn_read = daqboard2000_ao_insn_read;
 840         s->insn_write = daqboard2000_ao_insn_write;
 841         s->range_table = &range_daqboard2000_ao;
 842
 843         s = dev->subdevices + 2;
 844         result = subdev_8255_init(dev, s, daqboard2000_8255_cb,
 845                 (unsigned long)(dev->iobase + 0x40));
 846
 847         printk("\n");
 848       out:
 849         return result;
 850 }
 851
 852 static int daqboard2000_detach(struct comedi_device * dev)
 853 {
 854         printk("comedi%d: daqboard2000: remove\n", dev->minor);
 855
 856         if (dev->subdevices)
 857                 subdev_8255_cleanup(dev, dev->subdevices + 2);
 858
 859         if (dev->irq) {
 860                 free_irq(dev->irq, dev);
 861         }
 862         if (devpriv) {
 863                 if (devpriv->daq)
 864                         iounmap(devpriv->daq);
 865                 if (devpriv->plx)
 866                         iounmap(devpriv->plx);
 867                 if (devpriv->pci_dev) {
 868                         if (devpriv->got_regions) {
 869                                 comedi_pci_disable(devpriv->pci_dev);
 870                         }
 871                         pci_dev_put(devpriv->pci_dev);
 872                 }
 873         }
 874         return 0;
 875 }
 876
 877 COMEDI_PCI_INITCLEANUP(driver_daqboard2000, daqboard2000_pci_table);