933 lines
27 KiB
C
933 lines
27 KiB
C
/*
|
|
comedi/drivers/daqboard2000.c
|
|
hardware driver for IOtech DAQboard/2000
|
|
|
|
COMEDI - Linux Control and Measurement Device Interface
|
|
Copyright (C) 1999 Anders Blomdell <anders.blomdell@control.lth.se>
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
|
|
*/
|
|
/*
|
|
Driver: daqboard2000
|
|
Description: IOTech DAQBoard/2000
|
|
Author: Anders Blomdell <anders.blomdell@control.lth.se>
|
|
Status: works
|
|
Updated: Mon, 14 Apr 2008 15:28:52 +0100
|
|
Devices: [IOTech] DAQBoard/2000 (daqboard2000)
|
|
|
|
Much of the functionality of this driver was determined from reading
|
|
the source code for the Windows driver.
|
|
|
|
The FPGA on the board requires initialization code, which can
|
|
be loaded by comedi_config using the -i
|
|
option. The initialization code is available from http://www.comedi.org
|
|
in the comedi_nonfree_firmware tarball.
|
|
|
|
Configuration options:
|
|
[0] - PCI bus of device (optional)
|
|
[1] - PCI slot of device (optional)
|
|
If bus/slot is not specified, the first supported
|
|
PCI device found will be used.
|
|
*/
|
|
/*
|
|
This card was obviously never intended to leave the Windows world,
|
|
since it lacked all kind of hardware documentation (except for cable
|
|
pinouts, plug and pray has something to catch up with yet).
|
|
|
|
With some help from our swedish distributor, we got the Windows sourcecode
|
|
for the card, and here are the findings so far.
|
|
|
|
1. A good document that describes the PCI interface chip is 9080db-106.pdf
|
|
available from http://www.plxtech.com/products/io/pci9080
|
|
|
|
2. The initialization done so far is:
|
|
a. program the FPGA (windows code sans a lot of error messages)
|
|
b.
|
|
|
|
3. Analog out seems to work OK with DAC's disabled, if DAC's are enabled,
|
|
you have to output values to all enabled DAC's until result appears, I
|
|
guess that it has something to do with pacer clocks, but the source
|
|
gives me no clues. I'll keep it simple so far.
|
|
|
|
4. Analog in.
|
|
Each channel in the scanlist seems to be controlled by four
|
|
control words:
|
|
|
|
Word0:
|
|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
! | | | ! | | | ! | | | ! | | | !
|
|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
|
|
Word1:
|
|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
! | | | ! | | | ! | | | ! | | | !
|
|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
| | | | | | |
|
|
+------+------+ | | | | +-- Digital input (??)
|
|
| | | | +---- 10 us settling time
|
|
| | | +------ Suspend acquisition (last to scan)
|
|
| | +-------- Simultaneous sample and hold
|
|
| +---------- Signed data format
|
|
+------------------------- Correction offset low
|
|
|
|
Word2:
|
|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
! | | | ! | | | ! | | | ! | | | !
|
|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
| | | | | | | | | |
|
|
+-----+ +--+--+ +++ +++ +--+--+
|
|
| | | | +----- Expansion channel
|
|
| | | +----------- Expansion gain
|
|
| | +--------------- Channel (low)
|
|
| +--------------------- Correction offset high
|
|
+----------------------------- Correction gain low
|
|
Word3:
|
|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
! | | | ! | | | ! | | | ! | | | !
|
|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
| | | | | | | | |
|
|
+------+------+ | | +-+-+ | | +-- Low bank enable
|
|
| | | | | +---- High bank enable
|
|
| | | | +------ Hi/low select
|
|
| | | +---------- Gain (1,?,2,4,8,16,32,64)
|
|
| | +-------------- differential/single ended
|
|
| +---------------- Unipolar
|
|
+------------------------- Correction gain high
|
|
|
|
999. The card seems to have an incredible amount of capabilities, but
|
|
trying to reverse engineer them from the Windows source is beyond my
|
|
patience.
|
|
|
|
*/
|
|
|
|
#include "../comedidev.h"
|
|
|
|
#include <linux/delay.h>
|
|
#include <linux/interrupt.h>
|
|
|
|
#include "comedi_pci.h"
|
|
#include "8255.h"
|
|
|
|
#define DAQBOARD2000_SUBSYSTEM_IDS2 0x00021616 /* Daqboard/2000 - 2 Dacs */
|
|
#define DAQBOARD2000_SUBSYSTEM_IDS4 0x00041616 /* Daqboard/2000 - 4 Dacs */
|
|
|
|
#define DAQBOARD2000_DAQ_SIZE 0x1002
|
|
#define DAQBOARD2000_PLX_SIZE 0x100
|
|
|
|
/* Initialization bits for the Serial EEPROM Control Register */
|
|
#define DAQBOARD2000_SECRProgPinHi 0x8001767e
|
|
#define DAQBOARD2000_SECRProgPinLo 0x8000767e
|
|
#define DAQBOARD2000_SECRLocalBusHi 0xc000767e
|
|
#define DAQBOARD2000_SECRLocalBusLo 0x8000767e
|
|
#define DAQBOARD2000_SECRReloadHi 0xa000767e
|
|
#define DAQBOARD2000_SECRReloadLo 0x8000767e
|
|
|
|
/* SECR status bits */
|
|
#define DAQBOARD2000_EEPROM_PRESENT 0x10000000
|
|
|
|
/* CPLD status bits */
|
|
#define DAQBOARD2000_CPLD_INIT 0x0002
|
|
#define DAQBOARD2000_CPLD_DONE 0x0004
|
|
|
|
/* Available ranges */
|
|
static const struct comedi_lrange range_daqboard2000_ai = { 13, {
|
|
RANGE(-10, 10),
|
|
RANGE(-5, 5),
|
|
RANGE(-2.5,
|
|
2.5),
|
|
RANGE(-1.25,
|
|
1.25),
|
|
RANGE(-0.625,
|
|
0.625),
|
|
RANGE(-0.3125,
|
|
0.3125),
|
|
RANGE(-0.156,
|
|
0.156),
|
|
RANGE(0, 10),
|
|
RANGE(0, 5),
|
|
RANGE(0, 2.5),
|
|
RANGE(0, 1.25),
|
|
RANGE(0,
|
|
0.625),
|
|
RANGE(0,
|
|
0.3125)
|
|
}
|
|
};
|
|
|
|
static const struct comedi_lrange range_daqboard2000_ao = { 1, {
|
|
RANGE(-10, 10)
|
|
}
|
|
};
|
|
|
|
struct daqboard2000_hw {
|
|
volatile u16 acqControl; /* 0x00 */
|
|
volatile u16 acqScanListFIFO; /* 0x02 */
|
|
volatile u32 acqPacerClockDivLow; /* 0x04 */
|
|
|
|
volatile u16 acqScanCounter; /* 0x08 */
|
|
volatile u16 acqPacerClockDivHigh; /* 0x0a */
|
|
volatile u16 acqTriggerCount; /* 0x0c */
|
|
volatile u16 fill2; /* 0x0e */
|
|
volatile u16 acqResultsFIFO; /* 0x10 */
|
|
volatile u16 fill3; /* 0x12 */
|
|
volatile u16 acqResultsShadow; /* 0x14 */
|
|
volatile u16 fill4; /* 0x16 */
|
|
volatile u16 acqAdcResult; /* 0x18 */
|
|
volatile u16 fill5; /* 0x1a */
|
|
volatile u16 dacScanCounter; /* 0x1c */
|
|
volatile u16 fill6; /* 0x1e */
|
|
|
|
volatile u16 dacControl; /* 0x20 */
|
|
volatile u16 fill7; /* 0x22 */
|
|
volatile s16 dacFIFO; /* 0x24 */
|
|
volatile u16 fill8[2]; /* 0x26 */
|
|
volatile u16 dacPacerClockDiv; /* 0x2a */
|
|
volatile u16 refDacs; /* 0x2c */
|
|
volatile u16 fill9; /* 0x2e */
|
|
|
|
volatile u16 dioControl; /* 0x30 */
|
|
volatile s16 dioP3hsioData; /* 0x32 */
|
|
volatile u16 dioP3Control; /* 0x34 */
|
|
volatile u16 calEepromControl; /* 0x36 */
|
|
volatile s16 dacSetting[4]; /* 0x38 */
|
|
volatile s16 dioP2ExpansionIO8Bit[32]; /* 0x40 */
|
|
|
|
volatile u16 ctrTmrControl; /* 0x80 */
|
|
volatile u16 fill10[3]; /* 0x82 */
|
|
volatile s16 ctrInput[4]; /* 0x88 */
|
|
volatile u16 fill11[8]; /* 0x90 */
|
|
volatile u16 timerDivisor[2]; /* 0xa0 */
|
|
volatile u16 fill12[6]; /* 0xa4 */
|
|
|
|
volatile u16 dmaControl; /* 0xb0 */
|
|
volatile u16 trigControl; /* 0xb2 */
|
|
volatile u16 fill13[2]; /* 0xb4 */
|
|
volatile u16 calEeprom; /* 0xb8 */
|
|
volatile u16 acqDigitalMark; /* 0xba */
|
|
volatile u16 trigDacs; /* 0xbc */
|
|
volatile u16 fill14; /* 0xbe */
|
|
volatile s16 dioP2ExpansionIO16Bit[32]; /* 0xc0 */
|
|
};
|
|
|
|
/* Scan Sequencer programming */
|
|
#define DAQBOARD2000_SeqStartScanList 0x0011
|
|
#define DAQBOARD2000_SeqStopScanList 0x0010
|
|
|
|
/* Prepare for acquisition */
|
|
#define DAQBOARD2000_AcqResetScanListFifo 0x0004
|
|
#define DAQBOARD2000_AcqResetResultsFifo 0x0002
|
|
#define DAQBOARD2000_AcqResetConfigPipe 0x0001
|
|
|
|
/* Acqusition status bits */
|
|
#define DAQBOARD2000_AcqResultsFIFOMore1Sample 0x0001
|
|
#define DAQBOARD2000_AcqResultsFIFOHasValidData 0x0002
|
|
#define DAQBOARD2000_AcqResultsFIFOOverrun 0x0004
|
|
#define DAQBOARD2000_AcqLogicScanning 0x0008
|
|
#define DAQBOARD2000_AcqConfigPipeFull 0x0010
|
|
#define DAQBOARD2000_AcqScanListFIFOEmpty 0x0020
|
|
#define DAQBOARD2000_AcqAdcNotReady 0x0040
|
|
#define DAQBOARD2000_ArbitrationFailure 0x0080
|
|
#define DAQBOARD2000_AcqPacerOverrun 0x0100
|
|
#define DAQBOARD2000_DacPacerOverrun 0x0200
|
|
#define DAQBOARD2000_AcqHardwareError 0x01c0
|
|
|
|
/* Scan Sequencer programming */
|
|
#define DAQBOARD2000_SeqStartScanList 0x0011
|
|
#define DAQBOARD2000_SeqStopScanList 0x0010
|
|
|
|
/* Pacer Clock Control */
|
|
#define DAQBOARD2000_AdcPacerInternal 0x0030
|
|
#define DAQBOARD2000_AdcPacerExternal 0x0032
|
|
#define DAQBOARD2000_AdcPacerEnable 0x0031
|
|
#define DAQBOARD2000_AdcPacerEnableDacPacer 0x0034
|
|
#define DAQBOARD2000_AdcPacerDisable 0x0030
|
|
#define DAQBOARD2000_AdcPacerNormalMode 0x0060
|
|
#define DAQBOARD2000_AdcPacerCompatibilityMode 0x0061
|
|
#define DAQBOARD2000_AdcPacerInternalOutEnable 0x0008
|
|
#define DAQBOARD2000_AdcPacerExternalRising 0x0100
|
|
|
|
/* DAC status */
|
|
#define DAQBOARD2000_DacFull 0x0001
|
|
#define DAQBOARD2000_RefBusy 0x0002
|
|
#define DAQBOARD2000_TrgBusy 0x0004
|
|
#define DAQBOARD2000_CalBusy 0x0008
|
|
#define DAQBOARD2000_Dac0Busy 0x0010
|
|
#define DAQBOARD2000_Dac1Busy 0x0020
|
|
#define DAQBOARD2000_Dac2Busy 0x0040
|
|
#define DAQBOARD2000_Dac3Busy 0x0080
|
|
|
|
/* DAC control */
|
|
#define DAQBOARD2000_Dac0Enable 0x0021
|
|
#define DAQBOARD2000_Dac1Enable 0x0031
|
|
#define DAQBOARD2000_Dac2Enable 0x0041
|
|
#define DAQBOARD2000_Dac3Enable 0x0051
|
|
#define DAQBOARD2000_DacEnableBit 0x0001
|
|
#define DAQBOARD2000_Dac0Disable 0x0020
|
|
#define DAQBOARD2000_Dac1Disable 0x0030
|
|
#define DAQBOARD2000_Dac2Disable 0x0040
|
|
#define DAQBOARD2000_Dac3Disable 0x0050
|
|
#define DAQBOARD2000_DacResetFifo 0x0004
|
|
#define DAQBOARD2000_DacPatternDisable 0x0060
|
|
#define DAQBOARD2000_DacPatternEnable 0x0061
|
|
#define DAQBOARD2000_DacSelectSignedData 0x0002
|
|
#define DAQBOARD2000_DacSelectUnsignedData 0x0000
|
|
|
|
/* Trigger Control */
|
|
#define DAQBOARD2000_TrigAnalog 0x0000
|
|
#define DAQBOARD2000_TrigTTL 0x0010
|
|
#define DAQBOARD2000_TrigTransHiLo 0x0004
|
|
#define DAQBOARD2000_TrigTransLoHi 0x0000
|
|
#define DAQBOARD2000_TrigAbove 0x0000
|
|
#define DAQBOARD2000_TrigBelow 0x0004
|
|
#define DAQBOARD2000_TrigLevelSense 0x0002
|
|
#define DAQBOARD2000_TrigEdgeSense 0x0000
|
|
#define DAQBOARD2000_TrigEnable 0x0001
|
|
#define DAQBOARD2000_TrigDisable 0x0000
|
|
|
|
/* Reference Dac Selection */
|
|
#define DAQBOARD2000_PosRefDacSelect 0x0100
|
|
#define DAQBOARD2000_NegRefDacSelect 0x0000
|
|
|
|
static int daqboard2000_attach(struct comedi_device *dev,
|
|
struct comedi_devconfig *it);
|
|
static int daqboard2000_detach(struct comedi_device *dev);
|
|
|
|
static struct comedi_driver driver_daqboard2000 = {
|
|
.driver_name = "daqboard2000",
|
|
.module = THIS_MODULE,
|
|
.attach = daqboard2000_attach,
|
|
.detach = daqboard2000_detach,
|
|
};
|
|
|
|
struct daq200_boardtype {
|
|
const char *name;
|
|
int id;
|
|
};
|
|
static const struct daq200_boardtype boardtypes[] = {
|
|
{"ids2", DAQBOARD2000_SUBSYSTEM_IDS2},
|
|
{"ids4", DAQBOARD2000_SUBSYSTEM_IDS4},
|
|
};
|
|
|
|
#define n_boardtypes (sizeof(boardtypes)/sizeof(struct daq200_boardtype))
|
|
#define this_board ((const struct daq200_boardtype *)dev->board_ptr)
|
|
|
|
static DEFINE_PCI_DEVICE_TABLE(daqboard2000_pci_table) = {
|
|
{
|
|
0x1616, 0x0409, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, {
|
|
0}
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(pci, daqboard2000_pci_table);
|
|
|
|
struct daqboard2000_private {
|
|
enum {
|
|
card_daqboard_2000
|
|
} card;
|
|
struct pci_dev *pci_dev;
|
|
void *daq;
|
|
void *plx;
|
|
int got_regions;
|
|
unsigned int ao_readback[2];
|
|
};
|
|
|
|
#define devpriv ((struct daqboard2000_private *)dev->private)
|
|
|
|
static void writeAcqScanListEntry(struct comedi_device *dev, u16 entry)
|
|
{
|
|
struct daqboard2000_hw *fpga = devpriv->daq;
|
|
|
|
/* udelay(4); */
|
|
fpga->acqScanListFIFO = entry & 0x00ff;
|
|
/* udelay(4); */
|
|
fpga->acqScanListFIFO = (entry >> 8) & 0x00ff;
|
|
}
|
|
|
|
static void setup_sampling(struct comedi_device *dev, int chan, int gain)
|
|
{
|
|
u16 word0, word1, word2, word3;
|
|
|
|
/* Channel 0-7 diff, channel 8-23 single ended */
|
|
word0 = 0;
|
|
word1 = 0x0004; /* Last scan */
|
|
word2 = (chan << 6) & 0x00c0;
|
|
switch (chan / 4) {
|
|
case 0:
|
|
word3 = 0x0001;
|
|
break;
|
|
case 1:
|
|
word3 = 0x0002;
|
|
break;
|
|
case 2:
|
|
word3 = 0x0005;
|
|
break;
|
|
case 3:
|
|
word3 = 0x0006;
|
|
break;
|
|
case 4:
|
|
word3 = 0x0041;
|
|
break;
|
|
case 5:
|
|
word3 = 0x0042;
|
|
break;
|
|
default:
|
|
word3 = 0;
|
|
break;
|
|
}
|
|
/*
|
|
dev->eeprom.correctionDACSE[i][j][k].offset = 0x800;
|
|
dev->eeprom.correctionDACSE[i][j][k].gain = 0xc00;
|
|
*/
|
|
/* These should be read from EEPROM */
|
|
word2 |= 0x0800;
|
|
word3 |= 0xc000;
|
|
/* printk("%d %4.4x %4.4x %4.4x %4.4x\n", chan, word0, word1, word2, word3);*/
|
|
writeAcqScanListEntry(dev, word0);
|
|
writeAcqScanListEntry(dev, word1);
|
|
writeAcqScanListEntry(dev, word2);
|
|
writeAcqScanListEntry(dev, word3);
|
|
}
|
|
|
|
static int daqboard2000_ai_insn_read(struct comedi_device *dev,
|
|
struct comedi_subdevice *s,
|
|
struct comedi_insn *insn,
|
|
unsigned int *data)
|
|
{
|
|
int i;
|
|
struct daqboard2000_hw *fpga = devpriv->daq;
|
|
int gain, chan, timeout;
|
|
|
|
fpga->acqControl =
|
|
DAQBOARD2000_AcqResetScanListFifo |
|
|
DAQBOARD2000_AcqResetResultsFifo | DAQBOARD2000_AcqResetConfigPipe;
|
|
|
|
/* If pacer clock is not set to some high value (> 10 us), we
|
|
risk multiple samples to be put into the result FIFO. */
|
|
fpga->acqPacerClockDivLow = 1000000; /* 1 second, should be long enough */
|
|
fpga->acqPacerClockDivHigh = 0;
|
|
|
|
gain = CR_RANGE(insn->chanspec);
|
|
chan = CR_CHAN(insn->chanspec);
|
|
|
|
/* This doesn't look efficient. I decided to take the conservative
|
|
* approach when I did the insn conversion. Perhaps it would be
|
|
* better to have broken it completely, then someone would have been
|
|
* forced to fix it. --ds */
|
|
for (i = 0; i < insn->n; i++) {
|
|
setup_sampling(dev, chan, gain);
|
|
/* Enable reading from the scanlist FIFO */
|
|
fpga->acqControl = DAQBOARD2000_SeqStartScanList;
|
|
for (timeout = 0; timeout < 20; timeout++) {
|
|
if (fpga->acqControl & DAQBOARD2000_AcqConfigPipeFull) {
|
|
break;
|
|
}
|
|
/* udelay(2); */
|
|
}
|
|
fpga->acqControl = DAQBOARD2000_AdcPacerEnable;
|
|
for (timeout = 0; timeout < 20; timeout++) {
|
|
if (fpga->acqControl & DAQBOARD2000_AcqLogicScanning) {
|
|
break;
|
|
}
|
|
/* udelay(2); */
|
|
}
|
|
for (timeout = 0; timeout < 20; timeout++) {
|
|
if (fpga->acqControl &
|
|
DAQBOARD2000_AcqResultsFIFOHasValidData) {
|
|
break;
|
|
}
|
|
/* udelay(2); */
|
|
}
|
|
data[i] = fpga->acqResultsFIFO;
|
|
fpga->acqControl = DAQBOARD2000_AdcPacerDisable;
|
|
fpga->acqControl = DAQBOARD2000_SeqStopScanList;
|
|
}
|
|
|
|
return i;
|
|
}
|
|
|
|
static int daqboard2000_ao_insn_read(struct comedi_device *dev,
|
|
struct comedi_subdevice *s,
|
|
struct comedi_insn *insn,
|
|
unsigned int *data)
|
|
{
|
|
int i;
|
|
int chan = CR_CHAN(insn->chanspec);
|
|
|
|
for (i = 0; i < insn->n; i++) {
|
|
data[i] = devpriv->ao_readback[chan];
|
|
}
|
|
|
|
return i;
|
|
}
|
|
|
|
static int daqboard2000_ao_insn_write(struct comedi_device *dev,
|
|
struct comedi_subdevice *s,
|
|
struct comedi_insn *insn,
|
|
unsigned int *data)
|
|
{
|
|
int i;
|
|
int chan = CR_CHAN(insn->chanspec);
|
|
struct daqboard2000_hw *fpga = devpriv->daq;
|
|
int timeout;
|
|
|
|
for (i = 0; i < insn->n; i++) {
|
|
/*
|
|
* OK, since it works OK without enabling the DAC's, let's keep
|
|
* it as simple as possible...
|
|
*/
|
|
/* fpga->dacControl = (chan + 2) * 0x0010 | 0x0001; udelay(1000); */
|
|
fpga->dacSetting[chan] = data[i];
|
|
for (timeout = 0; timeout < 20; timeout++) {
|
|
if ((fpga->dacControl & ((chan + 1) * 0x0010)) == 0) {
|
|
break;
|
|
}
|
|
/* udelay(2); */
|
|
}
|
|
devpriv->ao_readback[chan] = data[i];
|
|
/*
|
|
* Since we never enabled the DAC's, we don't need to disable it...
|
|
* fpga->dacControl = (chan + 2) * 0x0010 | 0x0000; udelay(1000);
|
|
*/
|
|
}
|
|
|
|
return i;
|
|
}
|
|
|
|
static void daqboard2000_resetLocalBus(struct comedi_device *dev)
|
|
{
|
|
printk("daqboard2000_resetLocalBus\n");
|
|
writel(DAQBOARD2000_SECRLocalBusHi, devpriv->plx + 0x6c);
|
|
udelay(10000);
|
|
writel(DAQBOARD2000_SECRLocalBusLo, devpriv->plx + 0x6c);
|
|
udelay(10000);
|
|
}
|
|
|
|
static void daqboard2000_reloadPLX(struct comedi_device *dev)
|
|
{
|
|
printk("daqboard2000_reloadPLX\n");
|
|
writel(DAQBOARD2000_SECRReloadLo, devpriv->plx + 0x6c);
|
|
udelay(10000);
|
|
writel(DAQBOARD2000_SECRReloadHi, devpriv->plx + 0x6c);
|
|
udelay(10000);
|
|
writel(DAQBOARD2000_SECRReloadLo, devpriv->plx + 0x6c);
|
|
udelay(10000);
|
|
}
|
|
|
|
static void daqboard2000_pulseProgPin(struct comedi_device *dev)
|
|
{
|
|
printk("daqboard2000_pulseProgPin 1\n");
|
|
writel(DAQBOARD2000_SECRProgPinHi, devpriv->plx + 0x6c);
|
|
udelay(10000);
|
|
writel(DAQBOARD2000_SECRProgPinLo, devpriv->plx + 0x6c);
|
|
udelay(10000); /* Not in the original code, but I like symmetry... */
|
|
}
|
|
|
|
static int daqboard2000_pollCPLD(struct comedi_device *dev, int mask)
|
|
{
|
|
int result = 0;
|
|
int i;
|
|
int cpld;
|
|
|
|
/* timeout after 50 tries -> 5ms */
|
|
for (i = 0; i < 50; i++) {
|
|
cpld = readw(devpriv->daq + 0x1000);
|
|
if ((cpld & mask) == mask) {
|
|
result = 1;
|
|
break;
|
|
}
|
|
udelay(100);
|
|
}
|
|
udelay(5);
|
|
return result;
|
|
}
|
|
|
|
static int daqboard2000_writeCPLD(struct comedi_device *dev, int data)
|
|
{
|
|
int result = 0;
|
|
|
|
udelay(10);
|
|
writew(data, devpriv->daq + 0x1000);
|
|
if ((readw(devpriv->daq + 0x1000) & DAQBOARD2000_CPLD_INIT) ==
|
|
DAQBOARD2000_CPLD_INIT) {
|
|
result = 1;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
static int initialize_daqboard2000(struct comedi_device *dev,
|
|
unsigned char *cpld_array, int len)
|
|
{
|
|
int result = -EIO;
|
|
/* Read the serial EEPROM control register */
|
|
int secr;
|
|
int retry;
|
|
int i;
|
|
|
|
/* Check to make sure the serial eeprom is present on the board */
|
|
secr = readl(devpriv->plx + 0x6c);
|
|
if (!(secr & DAQBOARD2000_EEPROM_PRESENT)) {
|
|
#ifdef DEBUG_EEPROM
|
|
printk("no serial eeprom\n");
|
|
#endif
|
|
return -EIO;
|
|
}
|
|
|
|
for (retry = 0; retry < 3; retry++) {
|
|
#ifdef DEBUG_EEPROM
|
|
printk("Programming EEPROM try %x\n", retry);
|
|
#endif
|
|
|
|
daqboard2000_resetLocalBus(dev);
|
|
daqboard2000_reloadPLX(dev);
|
|
daqboard2000_pulseProgPin(dev);
|
|
if (daqboard2000_pollCPLD(dev, DAQBOARD2000_CPLD_INIT)) {
|
|
for (i = 0; i < len; i++) {
|
|
if (cpld_array[i] == 0xff
|
|
&& cpld_array[i + 1] == 0x20) {
|
|
#ifdef DEBUG_EEPROM
|
|
printk("Preamble found at %d\n", i);
|
|
#endif
|
|
break;
|
|
}
|
|
}
|
|
for (; i < len; i += 2) {
|
|
int data =
|
|
(cpld_array[i] << 8) + cpld_array[i + 1];
|
|
if (!daqboard2000_writeCPLD(dev, data)) {
|
|
break;
|
|
}
|
|
}
|
|
if (i >= len) {
|
|
#ifdef DEBUG_EEPROM
|
|
printk("Programmed\n");
|
|
#endif
|
|
daqboard2000_resetLocalBus(dev);
|
|
daqboard2000_reloadPLX(dev);
|
|
result = 0;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
static void daqboard2000_adcStopDmaTransfer(struct comedi_device *dev)
|
|
{
|
|
/* printk("Implement: daqboard2000_adcStopDmaTransfer\n");*/
|
|
}
|
|
|
|
static void daqboard2000_adcDisarm(struct comedi_device *dev)
|
|
{
|
|
struct daqboard2000_hw *fpga = devpriv->daq;
|
|
|
|
/* Disable hardware triggers */
|
|
udelay(2);
|
|
fpga->trigControl = DAQBOARD2000_TrigAnalog | DAQBOARD2000_TrigDisable;
|
|
udelay(2);
|
|
fpga->trigControl = DAQBOARD2000_TrigTTL | DAQBOARD2000_TrigDisable;
|
|
|
|
/* Stop the scan list FIFO from loading the configuration pipe */
|
|
udelay(2);
|
|
fpga->acqControl = DAQBOARD2000_SeqStopScanList;
|
|
|
|
/* Stop the pacer clock */
|
|
udelay(2);
|
|
fpga->acqControl = DAQBOARD2000_AdcPacerDisable;
|
|
|
|
/* Stop the input dma (abort channel 1) */
|
|
daqboard2000_adcStopDmaTransfer(dev);
|
|
}
|
|
|
|
static void daqboard2000_activateReferenceDacs(struct comedi_device *dev)
|
|
{
|
|
struct daqboard2000_hw *fpga = devpriv->daq;
|
|
int timeout;
|
|
|
|
/* Set the + reference dac value in the FPGA */
|
|
fpga->refDacs = 0x80 | DAQBOARD2000_PosRefDacSelect;
|
|
for (timeout = 0; timeout < 20; timeout++) {
|
|
if ((fpga->dacControl & DAQBOARD2000_RefBusy) == 0) {
|
|
break;
|
|
}
|
|
udelay(2);
|
|
}
|
|
/* printk("DAQBOARD2000_PosRefDacSelect %d\n", timeout);*/
|
|
|
|
/* Set the - reference dac value in the FPGA */
|
|
fpga->refDacs = 0x80 | DAQBOARD2000_NegRefDacSelect;
|
|
for (timeout = 0; timeout < 20; timeout++) {
|
|
if ((fpga->dacControl & DAQBOARD2000_RefBusy) == 0) {
|
|
break;
|
|
}
|
|
udelay(2);
|
|
}
|
|
/* printk("DAQBOARD2000_NegRefDacSelect %d\n", timeout);*/
|
|
}
|
|
|
|
static void daqboard2000_initializeCtrs(struct comedi_device *dev)
|
|
{
|
|
/* printk("Implement: daqboard2000_initializeCtrs\n");*/
|
|
}
|
|
|
|
static void daqboard2000_initializeTmrs(struct comedi_device *dev)
|
|
{
|
|
/* printk("Implement: daqboard2000_initializeTmrs\n");*/
|
|
}
|
|
|
|
static void daqboard2000_dacDisarm(struct comedi_device *dev)
|
|
{
|
|
/* printk("Implement: daqboard2000_dacDisarm\n");*/
|
|
}
|
|
|
|
static void daqboard2000_initializeAdc(struct comedi_device *dev)
|
|
{
|
|
daqboard2000_adcDisarm(dev);
|
|
daqboard2000_activateReferenceDacs(dev);
|
|
daqboard2000_initializeCtrs(dev);
|
|
daqboard2000_initializeTmrs(dev);
|
|
}
|
|
|
|
static void daqboard2000_initializeDac(struct comedi_device *dev)
|
|
{
|
|
daqboard2000_dacDisarm(dev);
|
|
}
|
|
|
|
/*
|
|
The test command, REMOVE!!:
|
|
|
|
rmmod daqboard2000 ; rmmod comedi; make install ; modprobe daqboard2000; /usr/sbin/comedi_config /dev/comedi0 daqboard/2000 ; tail -40 /var/log/messages
|
|
*/
|
|
|
|
static int daqboard2000_8255_cb(int dir, int port, int data,
|
|
unsigned long ioaddr)
|
|
{
|
|
int result = 0;
|
|
if (dir) {
|
|
writew(data, ((void *)ioaddr) + port * 2);
|
|
result = 0;
|
|
} else {
|
|
result = readw(((void *)ioaddr) + port * 2);
|
|
}
|
|
/*
|
|
printk("daqboard2000_8255_cb %x %d %d %2.2x -> %2.2x\n",
|
|
arg, dir, port, data, result);
|
|
*/
|
|
return result;
|
|
}
|
|
|
|
static int daqboard2000_attach(struct comedi_device *dev,
|
|
struct comedi_devconfig *it)
|
|
{
|
|
int result = 0;
|
|
struct comedi_subdevice *s;
|
|
struct pci_dev *card = NULL;
|
|
void *aux_data;
|
|
unsigned int aux_len;
|
|
int bus, slot;
|
|
|
|
printk("comedi%d: daqboard2000:", dev->minor);
|
|
|
|
bus = it->options[0];
|
|
slot = it->options[1];
|
|
|
|
result = alloc_private(dev, sizeof(struct daqboard2000_private));
|
|
if (result < 0) {
|
|
return -ENOMEM;
|
|
}
|
|
for (card = pci_get_device(0x1616, 0x0409, NULL);
|
|
card != NULL; card = pci_get_device(0x1616, 0x0409, card)) {
|
|
if (bus || slot) {
|
|
/* requested particular bus/slot */
|
|
if (card->bus->number != bus ||
|
|
PCI_SLOT(card->devfn) != slot) {
|
|
continue;
|
|
}
|
|
}
|
|
break; /* found one */
|
|
}
|
|
if (!card) {
|
|
if (bus || slot)
|
|
printk(" no daqboard2000 found at bus/slot: %d/%d\n",
|
|
bus, slot);
|
|
else
|
|
printk(" no daqboard2000 found\n");
|
|
return -EIO;
|
|
} else {
|
|
u32 id;
|
|
int i;
|
|
devpriv->pci_dev = card;
|
|
id = ((u32) card->
|
|
subsystem_device << 16) | card->subsystem_vendor;
|
|
for (i = 0; i < n_boardtypes; i++) {
|
|
if (boardtypes[i].id == id) {
|
|
printk(" %s", boardtypes[i].name);
|
|
dev->board_ptr = boardtypes + i;
|
|
}
|
|
}
|
|
if (!dev->board_ptr) {
|
|
printk
|
|
(" unknown subsystem id %08x (pretend it is an ids2)",
|
|
id);
|
|
dev->board_ptr = boardtypes;
|
|
}
|
|
}
|
|
|
|
result = comedi_pci_enable(card, "daqboard2000");
|
|
if (result < 0) {
|
|
printk(" failed to enable PCI device and request regions\n");
|
|
return -EIO;
|
|
}
|
|
devpriv->got_regions = 1;
|
|
devpriv->plx =
|
|
ioremap(pci_resource_start(card, 0), DAQBOARD2000_PLX_SIZE);
|
|
devpriv->daq =
|
|
ioremap(pci_resource_start(card, 2), DAQBOARD2000_DAQ_SIZE);
|
|
if (!devpriv->plx || !devpriv->daq) {
|
|
return -ENOMEM;
|
|
}
|
|
|
|
result = alloc_subdevices(dev, 3);
|
|
if (result < 0)
|
|
goto out;
|
|
|
|
readl(devpriv->plx + 0x6c);
|
|
|
|
/*
|
|
u8 interrupt;
|
|
Windows code does restore interrupts, but since we don't use them...
|
|
pci_read_config_byte(card, PCI_INTERRUPT_LINE, &interrupt);
|
|
printk("Interrupt before is: %x\n", interrupt);
|
|
*/
|
|
|
|
aux_data = comedi_aux_data(it->options, 0);
|
|
aux_len = it->options[COMEDI_DEVCONF_AUX_DATA_LENGTH];
|
|
|
|
if (aux_data && aux_len) {
|
|
result = initialize_daqboard2000(dev, aux_data, aux_len);
|
|
} else {
|
|
printk("no FPGA initialization code, aborting\n");
|
|
result = -EIO;
|
|
}
|
|
if (result < 0)
|
|
goto out;
|
|
daqboard2000_initializeAdc(dev);
|
|
daqboard2000_initializeDac(dev);
|
|
/*
|
|
Windows code does restore interrupts, but since we don't use them...
|
|
pci_read_config_byte(card, PCI_INTERRUPT_LINE, &interrupt);
|
|
printk("Interrupt after is: %x\n", interrupt);
|
|
*/
|
|
|
|
dev->iobase = (unsigned long)devpriv->daq;
|
|
|
|
dev->board_name = this_board->name;
|
|
|
|
s = dev->subdevices + 0;
|
|
/* ai subdevice */
|
|
s->type = COMEDI_SUBD_AI;
|
|
s->subdev_flags = SDF_READABLE | SDF_GROUND;
|
|
s->n_chan = 24;
|
|
s->maxdata = 0xffff;
|
|
s->insn_read = daqboard2000_ai_insn_read;
|
|
s->range_table = &range_daqboard2000_ai;
|
|
|
|
s = dev->subdevices + 1;
|
|
/* ao subdevice */
|
|
s->type = COMEDI_SUBD_AO;
|
|
s->subdev_flags = SDF_WRITABLE;
|
|
s->n_chan = 2;
|
|
s->maxdata = 0xffff;
|
|
s->insn_read = daqboard2000_ao_insn_read;
|
|
s->insn_write = daqboard2000_ao_insn_write;
|
|
s->range_table = &range_daqboard2000_ao;
|
|
|
|
s = dev->subdevices + 2;
|
|
result = subdev_8255_init(dev, s, daqboard2000_8255_cb,
|
|
(unsigned long)(dev->iobase + 0x40));
|
|
|
|
printk("\n");
|
|
out:
|
|
return result;
|
|
}
|
|
|
|
static int daqboard2000_detach(struct comedi_device *dev)
|
|
{
|
|
printk("comedi%d: daqboard2000: remove\n", dev->minor);
|
|
|
|
if (dev->subdevices)
|
|
subdev_8255_cleanup(dev, dev->subdevices + 2);
|
|
|
|
if (dev->irq) {
|
|
free_irq(dev->irq, dev);
|
|
}
|
|
if (devpriv) {
|
|
if (devpriv->daq)
|
|
iounmap(devpriv->daq);
|
|
if (devpriv->plx)
|
|
iounmap(devpriv->plx);
|
|
if (devpriv->pci_dev) {
|
|
if (devpriv->got_regions) {
|
|
comedi_pci_disable(devpriv->pci_dev);
|
|
}
|
|
pci_dev_put(devpriv->pci_dev);
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int __devinit driver_daqboard2000_pci_probe(struct pci_dev *dev,
|
|
const struct pci_device_id
|
|
*ent)
|
|
{
|
|
return comedi_pci_auto_config(dev, driver_daqboard2000.driver_name);
|
|
}
|
|
|
|
static void __devexit driver_daqboard2000_pci_remove(struct pci_dev *dev)
|
|
{
|
|
comedi_pci_auto_unconfig(dev);
|
|
}
|
|
|
|
static struct pci_driver driver_daqboard2000_pci_driver = {
|
|
.id_table = daqboard2000_pci_table,
|
|
.probe = &driver_daqboard2000_pci_probe,
|
|
.remove = __devexit_p(&driver_daqboard2000_pci_remove)
|
|
};
|
|
|
|
static int __init driver_daqboard2000_init_module(void)
|
|
{
|
|
int retval;
|
|
|
|
retval = comedi_driver_register(&driver_daqboard2000);
|
|
if (retval < 0)
|
|
return retval;
|
|
|
|
driver_daqboard2000_pci_driver.name =
|
|
(char *)driver_daqboard2000.driver_name;
|
|
return pci_register_driver(&driver_daqboard2000_pci_driver);
|
|
}
|
|
|
|
static void __exit driver_daqboard2000_cleanup_module(void)
|
|
{
|
|
pci_unregister_driver(&driver_daqboard2000_pci_driver);
|
|
comedi_driver_unregister(&driver_daqboard2000);
|
|
}
|
|
|
|
module_init(driver_daqboard2000_init_module);
|
|
module_exit(driver_daqboard2000_cleanup_module);
|
|
|
|
MODULE_AUTHOR("Comedi http://www.comedi.org");
|
|
MODULE_DESCRIPTION("Comedi low-level driver");
|
|
MODULE_LICENSE("GPL");
|