| 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, 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, 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); |