--- /dev/null
+/*
+ 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 found at:
+ http://plx.plxtech.com/download/9080/databook/9080db-106.pdf
+
+ 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 "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 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 comedi_lrange range_daqboard2000_ao = { 1, {
+ RANGE(-10, 10)
+ }
+};
+
+typedef 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
+} daqboard2000_hw;
+
+/* 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(comedi_device * dev, comedi_devconfig * it);
+static int daqboard2000_detach(comedi_device * dev);
+
+static comedi_driver driver_daqboard2000 = {
+ driver_name:"daqboard2000",
+ module:THIS_MODULE,
+ attach:daqboard2000_attach,
+ detach:daqboard2000_detach,
+};
+
+typedef struct {
+ const char *name;
+ int id;
+} boardtype;
+static const boardtype boardtypes[] = {
+ {"ids2", DAQBOARD2000_SUBSYSTEM_IDS2},
+ {"ids4", DAQBOARD2000_SUBSYSTEM_IDS4},
+};
+
+#define n_boardtypes (sizeof(boardtypes)/sizeof(boardtype))
+#define this_board ((const 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);
+
+typedef struct {
+ enum {
+ card_daqboard_2000
+ } card;
+ struct pci_dev *pci_dev;
+ void *daq;
+ void *plx;
+ int got_regions;
+ lsampl_t ao_readback[2];
+} daqboard2000_private;
+
+#define devpriv ((daqboard2000_private*)dev->private)
+
+static void writeAcqScanListEntry(comedi_device * dev, u16 entry)
+{
+ daqboard2000_hw *fpga = devpriv->daq;
+
+// comedi_udelay(4);
+ fpga->acqScanListFIFO = entry & 0x00ff;
+// comedi_udelay(4);
+ fpga->acqScanListFIFO = (entry >> 8) & 0x00ff;
+}
+
+static void setup_sampling(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(comedi_device * dev, comedi_subdevice * s,
+ comedi_insn * insn, lsampl_t * data)
+{
+ int i;
+ 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;
+ }
+ //comedi_udelay(2);
+ }
+ fpga->acqControl = DAQBOARD2000_AdcPacerEnable;
+ for (timeout = 0; timeout < 20; timeout++) {
+ if (fpga->acqControl & DAQBOARD2000_AcqLogicScanning) {
+ break;
+ }
+ //comedi_udelay(2);
+ }
+ for (timeout = 0; timeout < 20; timeout++) {
+ if (fpga->
+ acqControl &
+ DAQBOARD2000_AcqResultsFIFOHasValidData) {
+ break;
+ }
+ //comedi_udelay(2);
+ }
+ data[i] = fpga->acqResultsFIFO;
+ fpga->acqControl = DAQBOARD2000_AdcPacerDisable;
+ fpga->acqControl = DAQBOARD2000_SeqStopScanList;
+ }
+
+ return i;
+}
+
+static int daqboard2000_ao_insn_read(comedi_device * dev, comedi_subdevice * s,
+ comedi_insn * insn, lsampl_t * 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(comedi_device * dev, comedi_subdevice * s,
+ comedi_insn * insn, lsampl_t * data)
+{
+ int i;
+ int chan = CR_CHAN(insn->chanspec);
+ 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; comedi_udelay(1000);
+ fpga->dacSetting[chan] = data[i];
+ for (timeout = 0; timeout < 20; timeout++) {
+ if ((fpga->dacControl & ((chan + 1) * 0x0010)) == 0) {
+ break;
+ }
+ //comedi_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; comedi_udelay(1000);
+ */
+ }
+
+ return i;
+}
+
+static void daqboard2000_resetLocalBus(comedi_device * dev)
+{
+ printk("daqboard2000_resetLocalBus\n");
+ writel(DAQBOARD2000_SECRLocalBusHi, devpriv->plx + 0x6c);
+ comedi_udelay(10000);
+ writel(DAQBOARD2000_SECRLocalBusLo, devpriv->plx + 0x6c);
+ comedi_udelay(10000);
+}
+
+static void daqboard2000_reloadPLX(comedi_device * dev)
+{
+ printk("daqboard2000_reloadPLX\n");
+ writel(DAQBOARD2000_SECRReloadLo, devpriv->plx + 0x6c);
+ comedi_udelay(10000);
+ writel(DAQBOARD2000_SECRReloadHi, devpriv->plx + 0x6c);
+ comedi_udelay(10000);
+ writel(DAQBOARD2000_SECRReloadLo, devpriv->plx + 0x6c);
+ comedi_udelay(10000);
+}
+
+static void daqboard2000_pulseProgPin(comedi_device * dev)
+{
+ printk("daqboard2000_pulseProgPin 1\n");
+ writel(DAQBOARD2000_SECRProgPinHi, devpriv->plx + 0x6c);
+ comedi_udelay(10000);
+ writel(DAQBOARD2000_SECRProgPinLo, devpriv->plx + 0x6c);
+ comedi_udelay(10000); /* Not in the original code, but I like symmetry... */
+}
+
+static int daqboard2000_pollCPLD(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;
+ }
+ comedi_udelay(100);
+ }
+ comedi_udelay(5);
+ return result;
+}
+
+static int daqboard2000_writeCPLD(comedi_device * dev, int data)
+{
+ int result = 0;
+
+ comedi_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(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(comedi_device * dev)
+{
+/* printk("Implement: daqboard2000_adcStopDmaTransfer\n");*/
+}
+
+static void daqboard2000_adcDisarm(comedi_device * dev)
+{
+ daqboard2000_hw *fpga = devpriv->daq;
+
+ /* Disable hardware triggers */
+ comedi_udelay(2);
+ fpga->trigControl = DAQBOARD2000_TrigAnalog | DAQBOARD2000_TrigDisable;
+ comedi_udelay(2);
+ fpga->trigControl = DAQBOARD2000_TrigTTL | DAQBOARD2000_TrigDisable;
+
+ /* Stop the scan list FIFO from loading the configuration pipe */
+ comedi_udelay(2);
+ fpga->acqControl = DAQBOARD2000_SeqStopScanList;
+
+ /* Stop the pacer clock */
+ comedi_udelay(2);
+ fpga->acqControl = DAQBOARD2000_AdcPacerDisable;
+
+ /* Stop the input dma (abort channel 1) */
+ daqboard2000_adcStopDmaTransfer(dev);
+}
+
+static void daqboard2000_activateReferenceDacs(comedi_device * dev)
+{
+ 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;
+ }
+ comedi_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;
+ }
+ comedi_udelay(2);
+ }
+/* printk("DAQBOARD2000_NegRefDacSelect %d\n", timeout);*/
+}
+
+static void daqboard2000_initializeCtrs(comedi_device * dev)
+{
+/* printk("Implement: daqboard2000_initializeCtrs\n");*/
+}
+
+static void daqboard2000_initializeTmrs(comedi_device * dev)
+{
+/* printk("Implement: daqboard2000_initializeTmrs\n");*/
+}
+
+static void daqboard2000_dacDisarm(comedi_device * dev)
+{
+/* printk("Implement: daqboard2000_dacDisarm\n");*/
+}
+
+static void daqboard2000_initializeAdc(comedi_device * dev)
+{
+ daqboard2000_adcDisarm(dev);
+ daqboard2000_activateReferenceDacs(dev);
+ daqboard2000_initializeCtrs(dev);
+ daqboard2000_initializeTmrs(dev);
+}
+
+static void daqboard2000_initializeDac(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(comedi_device * dev, comedi_devconfig * it)
+{
+ int result = 0;
+ 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(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;
+ }
+ }
+
+ if ((result = comedi_pci_enable(card, "daqboard2000")) < 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(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;
+}
+
+COMEDI_PCI_INITCLEANUP(driver_daqboard2000, daqboard2000_pci_table);
projects / ~shefty / rdma-dev.git / commitdiff