--- /dev/null
+/*
+ comedi/drivers/rtd520.c
+ Comedi driver for Real Time Devices (RTD) PCI4520/DM7520
+
+ COMEDI - Linux Control and Measurement Device Interface
+ Copyright (C) 2001 David A. Schleef <ds@schleef.org>
+
+ 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.
+*/
+
+/*
+ Created by Dan Christian, NASA Ames Research Center.
+
+ The PCI4520 is a PCI card. The DM7520 is a PC/104-plus card.
+ Both have:
+ 8/16 12 bit ADC with FIFO and channel gain table
+ 8 bits high speed digital out (for external MUX) (or 8 in or 8 out)
+ 8 bits high speed digital in with FIFO and interrupt on change (or 8 IO)
+ 2 12 bit DACs with FIFOs
+ 2 bits output
+ 2 bits input
+ bus mastering DMA
+ timers: ADC sample, pacer, burst, about, delay, DA1, DA2
+ sample counter
+ 3 user timer/counters
+ external interrupt
+
+ The DM7520 has slightly fewer features (fewer gain steps).
+
+ These boards can support external multiplexors and multi-board
+ synchronization, but this driver doesn't support that.
+
+ Board docs: http://www.rtdusa.com/dm7520.htm
+ Data sheet: http://www.rtdusa.com/pdf/dm7520.pdf
+ Example source: http://www.rtdusa.com/examples/dm/dm7520.zip
+ Call them and ask for the register level manual.
+ PCI chip: http://www.plxtech.com/products/toolbox/9080.htm
+
+ Notes:
+ This board is (almost) completely memory mapped.
+
+ I use a pretty loose naming style within the driver (rtd_blah).
+ All externally visible names should be rtd520_blah.
+ I use camelCase in and for structures.
+ I may also use upper CamelCase for function names.
+
+ This board somewhat related to the PCI4400 board.
+
+ I borrowed heavily from the ni_mio_common, ni_atmio16d, and das1800,
+ since they have the best documented code.
+
+*/
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/sched.h>
+#include <linux/mm.h>
+#include <linux/malloc.h>
+#include <linux/errno.h>
+#include <linux/ioport.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/timex.h>
+#include <linux/timer.h>
+#include <linux/pci.h>
+#include <asm/io.h>
+#include <linux/comedidev.h>
+
+
+/*======================================================================
+ Board specific stuff
+======================================================================*/
+
+/* registers */
+#define RTD_VENDOR_ID 0x1435
+/*
+ The board has three memory windows: las0, las1, and lcfg (the PCI chip)
+ Las1 has the data and can be burst DMAed 32bits at a time.
+*/
+#define LCFG_PCIINDEX 0
+/* PCI region 1 is a 256 byte IO space mapping. Use??? */
+#define LAS0_PCIINDEX 2 /* PCI memory resources */
+#define LAS1_PCIINDEX 3
+#define LCFG_PCISIZE 0x100
+#define LAS0_PCISIZE 0x200
+#define LAS1_PCISIZE 0x10
+
+#define RTD_CLOCK_RATE 8000000 /* 8Mhz onboard clock */
+#define RTD_CLOCK_BASE 125 /* clock period in ns */
+
+#define RTD_MAX_SPEED 1600 /* in nanoseconds */
+#define RTD_MIN_SPEED 1000000000 /* in nanoseconds ??? */
+#define RTD_SETTLE_DELAY 1 /* in usec */
+#define RTD_ADC_TIMEOUT 1000 /* in usec */
+
+#include "rtd520.h"
+
+/*
+ Bit fields for one entry in the channel gain table
+*/
+typedef struct rtdChanGain_struct {
+ unsigned int channel : 4;
+ unsigned int gain : 3;
+ unsigned int nrse : 1; /* SE GND: 0=AGND, 1=AINSENSE */
+ unsigned int range : 2; /* 0=+-5, 1=+-10, 2=+10 */
+ unsigned int diff : 1; /* 0=SE, 1=differental */
+ unsigned int pause : 1;
+ unsigned int dac1 : 1;
+ unsigned int dac2 : 1;
+ unsigned int skip : 1;
+ unsigned int reserved: 1;
+} rtdChanGain;
+
+/*======================================================================
+ Comedi specific stuff
+======================================================================*/
+
+/*
+ The board has 3 input modes and the gains of 1,2,4,...32 (, 64, 128)
+*/
+static comedi_lrange rtd_ai_7520_range = { 6, {
+ /* TODO: BIP_RANGE(10.0) */
+ BIP_RANGE(5.0),
+ BIP_RANGE(5.0/2),
+ BIP_RANGE(5.0/4),
+ BIP_RANGE(5.0/8),
+ BIP_RANGE(5.0/16),
+ BIP_RANGE(5.0/32),
+ /*UNI_RANGE(10.0),
+ UNI_RANGE(10.0/2),
+ UNI_RANGE(10.0/4),
+ UNI_RANGE(10.0/8),
+ UNI_RANGE(10.0/16),
+ UNI_RANGE(10.0/32),*/
+}};
+ /* PCI4520 has two more gains (6 more entries) */
+
+static comedi_lrange rtd_ao_range = { 4, {
+ RANGE(-10, 10),
+ RANGE(-5, 5),
+ RANGE(0, 10),
+ RANGE(0, 5),
+}};
+
+/*
+ Board descriptions
+ */
+typedef struct rtdBoard_struct{
+ char *name; /* must be first */
+ int device_id;
+ int aiChans;
+ int aiBits;
+ int aiMaxGain;
+ int fifoLen;
+ int haveDio; /* is digital IO supported */
+} rtdBoard;
+
+rtdBoard rtd520Boards[] = {
+ {
+ name: "DM7520",
+ device_id: 0x7520,
+ aiChans: 16,
+ aiBits: 12,
+ aiMaxGain: 32,
+ fifoLen: 1024,
+ haveDio: 0,
+ },
+ {
+ name: "DM7520-8",
+ device_id: 0x7520,
+ aiChans: 16,
+ aiBits: 12,
+ aiMaxGain: 32,
+ fifoLen: 8192,
+ haveDio: 0,
+ },
+ {
+ name: "PCI4520",
+ device_id: 0x4520,
+ aiChans: 16,
+ aiBits: 12,
+ aiMaxGain: 128,
+ fifoLen: 1024,
+ haveDio: 0,
+ },
+ {
+ name: "PCI4520-8",
+ device_id: 0x4520,
+ aiChans: 16,
+ aiBits: 12,
+ aiMaxGain: 128,
+ fifoLen: 8192,
+ haveDio: 0,
+ },
+};
+
+/*
+ * Useful for shorthand access to the particular board structure
+ */
+#define thisboard ((rtdBoard *)dev->board_ptr)
+
+/*
+ This structure is for data unique to this hardware driver.
+ This is also unique for each board in the system.
+*/
+typedef struct{
+ /* memory mapped board structures */
+ void *las0;
+ void *las1;
+ void *lcfg;
+
+ unsigned long intCount; /* interrupt count */
+ unsigned long aiCount; /* total transfer size (samples) */
+ unsigned long aiExtraInt; /* ints but no data */
+ int aboutWrap;
+
+ /* PCI device info */
+ struct pci_dev *pci_dev;
+
+ /* Used for AO readback */
+ lsampl_t ao_readback[2];
+
+ /* NEEDED???: these 3 arent used after init */
+ unsigned long physLas0; /* configuation */
+ unsigned long physLas1; /* data area */
+ unsigned long physLcfg; /* PLX9080 */
+
+} rtdPrivate;
+
+/*
+ * most drivers define the following macro to make it easy to
+ * access the private structure.
+ */
+#define devpriv ((rtdPrivate *)dev->private)
+
+
+/* Macros to access registers */
+
+/* Reset board */
+#define RtdResetBoard(dev) \
+ writel (0, devpriv->las0+LAS0_BOARD_RESET)
+
+/* Reset channel gain table read pointer */
+#define RtdResetCGT(dev) \
+ writel (0, devpriv->las0+LAS0_CGT_RESET)
+
+/* Reset channel gain table read and write pointers */
+#define RtdClearCGT(dev) \
+ writel (0, devpriv->las0+LAS0_CGT_CLEAR)
+
+/* Reset channel gain table read and write pointers */
+#define RtdEnableCGT(dev,v) \
+ writel ((v > 0) ? 1 : 0, devpriv->las0+LAS0_CGT_ENABLE)
+
+/* Write channel gain table entry */
+#define RtdWriteCGTable(dev,v) \
+ writel (v, devpriv->las0+LAS0_CGT_WRITE)
+
+/* Write Channel Gain Latch */
+#define RtdWriteCGLatch(dev,v) \
+ writel (v, devpriv->las0+LAS0_CGL_WRITE)
+
+/* Reset ADC FIFO */
+#define RtdClearAdcFifo(dev) \
+ writel (0, devpriv->las0+LAS0_ADC_FIFO_CLEAR)
+
+/* Set ADC start conversion source select (write only) */
+#define RtdAdcConversionSource(dev,v) \
+ writel (v, devpriv->las0+LAS0_ADC_CONVERSION)
+
+/* Set burst start source select (write only) */
+#define RtdBurstStartSource(dev,v) \
+ writel (v, devpriv->las0+LAS0_BURST_START)
+
+/* Set Pacer start source select (write only) */
+#define RtdPacerStartSource(dev,v) \
+ writel (v, devpriv->las0+LAS0_PACER_START)
+
+/* Set Pacer stop source select (write only) */
+#define RtdPacerStopSource(dev,v) \
+ writel (v, devpriv->las0+LAS0_PACER_STOP)
+
+/* Set Pacer clock source select (write only) 0=external 1=internal */
+#define RtdPacerClockSource(dev,v) \
+ writel ((v > 0) ? 1 : 0, devpriv->las0+LAS0_PACER_SELECT)
+
+/* Set sample counter source select (write only) */
+#define RtdAdcSampleCounterSource(dev,v) \
+ writel (v, devpriv->las0+LAS0_ADC_SCNT_SRC)
+
+/* Set Pacer trigger mode select (write only) 0=single cycle, 1=repeat */
+#define RtdPacerTriggerMode(dev,v) \
+ writel ((v > 0) ? 1 : 0, devpriv->las0+LAS0_PACER_REPEAT)
+
+/* Set About counter stop enable (write only) */
+#define RtdAboutStopEnable(dev,v) \
+ writel ((v > 0) ? 1 : 0, devpriv->las0+LAS0_ACNT_STOP_ENABLE)
+
+/* Set external trigger polarity (write only) 0=positive edge, 1=negative */
+#define RtdTriggerPolarity(dev,v) \
+ writel ((v > 0) ? 1 : 0, devpriv->las0+LAS0_ETRG_POLARITY)
+
+/* Start single ADC conversion */
+#define RtdAdcStart(dev) \
+ writew (0, devpriv->las0+LAS0_ADC)
+
+/* Read one ADC data value (12bit+sign as 16bit) */
+/* Note: matches what DMA would get. Actual value >> 3 */
+#define RtdAdcFifoGet(dev) \
+ readw (devpriv->las1+LAS1_ADC_FIFO)
+
+/* Read two ADC data values */
+#define RtdAdcFifoGet2(dev) \
+ readl (devpriv->las1+LAS1_ADC_FIFO)
+
+/* FIFO status */
+#define RtdFifoStatus(dev) \
+ readl (devpriv->las0+LAS0_ADC)
+
+/* pacer start/stop read=start, write=stop*/
+#define RtdPacerStart(dev) \
+ readl (devpriv->las0+LAS0_PACER)
+#define RtdPacerStop(dev) \
+ writel (0, devpriv->las0+LAS0_PACER)
+
+/* Interrupt status */
+#define RtdInterruptStatus(dev) \
+ readl (devpriv->las0+LAS0_IT)
+
+/* Interrupt mask */
+#define RtdInterruptMask(dev,v) \
+ writel (v,devpriv->las0+LAS0_IT)
+
+/* Interrupt status clear (only bits set in mask) */
+#define RtdInterruptClear(dev) \
+ readl (devpriv->las0+LAS0_CLEAR)
+
+/* Interrupt clear mask */
+#define RtdInterruptClearMask(dev,v) \
+ writel (v, devpriv->las0+LAS0_CLEAR)
+
+/* Interrupt overrun status */
+#define RtdInterruptOverrunStatus(dev) \
+ readl (devpriv->las0+LAS0_OVERRUN)
+
+/* Interrupt overrun clear */
+#define RtdInterruptOverrunClear(dev) \
+ writel (0, devpriv->las0+LAS0_OVERRUN)
+
+/* Pacer counter, 24bit */
+#define RtdPacerCount(dev) \
+ readl (devpriv->las0+LAS0_PCLK)
+#define RtdPacerCounter(dev,v) \
+ writel ((v) & 0xffffff,devpriv->las0+LAS0_PCLK)
+
+/* Burst counter, 10bit */
+#define RtdBurstCount(dev) \
+ readl (devpriv->las0+LAS0_BCLK)
+#define RtdBurstCounter(dev,v) \
+ writel ((v) & 0x3ff,devpriv->las0+LAS0_BCLK)
+
+/* Delay counter, 16bit */
+#define RtdDelayCount(dev) \
+ readl (devpriv->las0+LAS0_DCLK)
+#define RtdDelayCounter(dev,v) \
+ writel ((v) & 0xffff, devpriv->las0+LAS0_DCLK)
+
+/* About counter, 16bit */
+#define RtdAboutCount(dev) \
+ readl (devpriv->las0+LAS0_ACNT)
+#define RtdAboutCounter(dev,v) \
+ writel ((v) & 0xffff, devpriv->las0+LAS0_ACNT)
+
+/* ADC sample counter, 10bit */
+#define RtdAdcSampleCount(dev) \
+ readl (devpriv->las0+LAS0_ADC_SCNT)
+#define RtdAdcSampleCounter(dev,v) \
+ writel ((v) & 0x3ff, devpriv->las0+LAS0_ADC_SCNT)
+
+/* User timer/counter, 16bit (two step access, LSB,MSB) */
+/* UTC Status word must have the right counter and latching mode in it!!! */
+#define RtdUtcCount(dev,n) \
+ (readb (devpriv->las0 \
+ + ((n <= 0) ? LAS0_UTC0 : ((1 == n) ? LAS0_UTC1 : LAS0_UTC2))) \
+ | (readb (devpriv->las0 \
+ + ((n <= 0) ? LAS0_UTC0 : ((1 == n) ? LAS0_UTC1 : LAS0_UTC2))) << 8))
+
+#define RtdUtcCounter(dev,n,v) \
+ writeb ((v) & 0xff, devpriv->las0 \
+ + ((n <= 0) ? LAS0_UTC0 : ((1 == n) ? LAS0_UTC1 : LAS0_UTC2))), \
+ writeb (((v) >> 8) & 0xff, devpriv->las0 \
+ + ((n <= 0) ? LAS0_UTC0 : ((1 == n) ? LAS0_UTC1 : LAS0_UTC2)))
+
+/* Set UTC mode. Forces proper latching mode and binary counting. */
+#define RtdUtcModeSet(dev,n,v) \
+ writeb (((n & 3) << 6) | (((v) & 7) < 1) | 0x30, \
+ devpriv->las0 + LAS0_UTC_CTRL)
+
+/* Get UTC mode. Forces proper latching mode and binary counting. */
+/* The docs say that you cant read mode, but dos driver implements it! */
+#define RtdUtcModeGet(dev,n) \
+ (writeb (((n & 3) << 1) | 0xE0, devpriv->las0 + LAS0_UTC_CTRL), \
+ readw (devpriv->las0 + LAS0_UTC_CTRL) & 0xff)
+
+/* Set UTCn clock source (write only) */
+#define RtdUtcClockSource(dev,n,v) \
+ writew (v, devpriv->las0 \
+ + ((n <= 0) ? LAS0_UTC0_CLOCK : \
+ ((1 == n) ? LAS0_UTC1_CLOCK : LAS0_UTC2_CLOCK)))
+
+/* Set UTCn gate source (write only) */
+#define RtdUtcGateSource(dev,n,v) \
+ writew (v, devpriv->las0 \
+ + ((n <= 0) ? LAS0_UTC0_GATE : \
+ ((1 == n) ? LAS0_UTC1_GATE : LAS0_UTC2_GATE)))
+
+/* User output N source select (write only) */
+#define RtdUsrOutSource(dev,n,v) \
+ writel (v,devpriv->las0+((n <= 0) ? LAS0_UOUT0_SELECT : LAS0_UOUT1_SELECT))
+
+/* PLX9080 interrupt mask and status */
+#define RtdPLXInterruptRead(dev) \
+ readl (devpriv->lcfg+LCFG_ITCSR)
+#define RtdPLXInterruptWrite(dev,v) \
+ writel (v, devpriv->lcfg+LCFG_ITCSR)
+
+
+/*
+ * The comedi_driver structure tells the Comedi core module
+ * which functions to call to configure/deconfigure (attach/detach)
+ * the board, and also about the kernel module that contains
+ * the device code.
+ */
+static int rtd_attach (comedi_device *dev, comedi_devconfig *it);
+static int rtd_detach (comedi_device *dev);
+
+comedi_driver rtd520Driver={
+ driver_name: "rtd520",
+ module: THIS_MODULE,
+ attach: rtd_attach,
+ detach: rtd_detach,
+
+ /* It is not necessary to implement the following members if you are
+ * writing a driver for a ISA PnP or PCI card */
+ /* Most drivers will support multiple types of boards by
+ * having an array of board structures. These were defined
+ * in rtd520Boards[] above. Note that the element 'name'
+ * was first in the structure -- Comedi uses this fact to
+ * extract the name of the board without knowing any details
+ * about the structure except for its length.
+ * When a device is attached (by comedi_config), the name
+ * of the device is given to Comedi, and Comedi tries to
+ * match it by going through the list of board names. If
+ * there is a match, the address of the pointer is put
+ * into dev->board_ptr and driver->attach() is called.
+ *
+ * Note that these are not necessary if you can determine
+ * the type of board in software. ISA PnP, PCI, and PCMCIA
+ * devices are such boards.
+ */
+ board_name: rtd520Boards,
+ offset: sizeof(rtdBoard),
+ num_names: sizeof(rtd520Boards) / sizeof(rtdBoard),
+};
+
+static int rtd_ai_rinsn (comedi_device *dev, comedi_subdevice *s,
+ comedi_insn *insn, lsampl_t *data);
+static int rtd_ao_winsn (comedi_device *dev, comedi_subdevice *s,
+ comedi_insn *insn, lsampl_t *data);
+static int rtd_ao_rinsn (comedi_device *dev, comedi_subdevice *s,
+ comedi_insn *insn, lsampl_t *data);
+static int rtd_dio_insn_bits (comedi_device *dev, comedi_subdevice *s,
+ comedi_insn *insn, lsampl_t *data);
+static int rtd_dio_insn_config (comedi_device *dev, comedi_subdevice *s,
+ comedi_insn *insn, lsampl_t *data);
+static int rtd_ai_cmdtest (comedi_device *dev,comedi_subdevice *s,
+ comedi_cmd *cmd);
+static int rtd_ai_cmd ( comedi_device *dev, comedi_subdevice *s);
+static int rtd_ai_cancel ( comedi_device *dev, comedi_subdevice *s);
+static int rtd_ns_to_timer (unsigned int *ns, int roundMode);
+static void rtd_interrupt ( int irq, void *d, struct pt_regs *regs);
+
+
+/*
+ * Attach is called by the Comedi core to configure the driver
+ * for a particular board. If you specified a board_name array
+ * in the driver structure, dev->board_ptr contains that
+ * address.
+ */
+static int rtd_attach (
+ comedi_device *dev,
+ comedi_devconfig *it) /* board name and options flags */
+{
+ comedi_subdevice *s;
+ struct pci_dev* pcidev;
+ int index;
+ int ret;
+
+ printk ("comedi%d: rtd520 attaching.\n", dev->minor);
+
+ /*
+ * Allocate the private structure area. alloc_private() is a
+ * convenient macro defined in comedidev.h.
+ */
+ if (alloc_private (dev, sizeof(rtdPrivate))<0)
+ return -ENOMEM;
+
+ /*
+ * Probe the device to determine what device in the series it is.
+ */
+ pci_for_each_dev (pcidev) {
+ if (pcidev->vendor == RTD_VENDOR_ID) {
+ if (it->options[0] && it->options[1]) {
+ if (pcidev->bus->number == it->options[0]
+ && PCI_SLOT(pcidev->devfn) == it->options[1]) {
+ printk("rtd520: found bus=%d slot=%d\n",
+ it->options[0], it->options[1]);
+ break; /* found it */
+ }
+ } else { /* specific board/slot not specified */
+ break; /* found one */
+ }
+ }
+ }
+
+ if (!pcidev) {
+ if (it->options[0] && it->options[1]) {
+ printk ("No RTD card at bus=%d slot=%d.\n",
+ it->options[0], it->options[1]);
+ } else {
+ printk ("No RTD card found.\n");
+ }
+ return -EIO;
+ }
+
+ /* See if this is a model that we know about */
+ for (index=0; index < rtd520Driver.num_names; index++){
+ if (rtd520Boards[index].device_id == pcidev->device) {
+ break;
+ }
+ }
+ if (index >= rtd520Driver.num_names) {
+ printk ("Found an RTD card, but not a supported type (%x).\n",
+ pcidev->device);
+ return -EIO;
+ } else {
+ devpriv->pci_dev = pcidev;
+ dev->board_ptr = rtd520Boards+index;
+ }
+ /*
+ * Initialize dev->board_name. Note that we can use the "thisboard"
+ * macro now, since we just initialized it in the last line.
+ */
+ dev->board_name = thisboard->name;
+
+ /*
+ * Initialize base addresses
+ */
+ /* Get the physical address from PCI config */
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,3,0)
+ devpriv->physLas0 = devpriv->pci_dev->base_address[LAS0_PCIINDEX];
+ devpriv->physLas1 = devpriv->pci_dev->base_address[LAS1_PCIINDEX];
+ devpriv->physLcfg = devpriv->pci_dev->base_address[LCFG_PCIINDEX];
+#else
+ devpriv->physLas0 = devpriv->pci_dev->resource[LAS0_PCIINDEX].start;
+ devpriv->physLas1 = devpriv->pci_dev->resource[LAS1_PCIINDEX].start;
+ devpriv->physLcfg = devpriv->pci_dev->resource[LCFG_PCIINDEX].start;
+#endif
+ /* Now have the kernel map this into memory */
+ /* ASSUME page aligned */
+ devpriv->las0 = ioremap(devpriv->physLas0, LAS0_PCISIZE);
+ devpriv->las1 = ioremap(devpriv->physLas1, LAS1_PCISIZE);
+ devpriv->lcfg = ioremap(devpriv->physLcfg, LCFG_PCISIZE);
+
+ printk ("%s: ", dev->board_name);
+ /*printk ("%s: LAS0=%lx, LAS1=%lx, CFG=%lx.\n", dev->board_name,
+ devpriv->physLas0, devpriv->physLas1, devpriv->physLcfg);*/
+
+ /*
+ * Allocate the subdevice structures. alloc_subdevice() is a
+ * convenient macro defined in comedidev.h. It relies on
+ * n_subdevices being set correctly.
+ */
+ dev->n_subdevices=4;
+ if (alloc_subdevices(dev)<0)
+ return -ENOMEM;
+
+ s=dev->subdevices+0;
+ dev->read_subdev=s;
+ /* analog input subdevice */
+ s->type=COMEDI_SUBD_AI;
+ s->subdev_flags=SDF_READABLE;
+ s->n_chan=thisboard->aiChans;
+ s->maxdata=(1<<thisboard->aiBits)-1;
+ s->range_table = &rtd_ai_7520_range;
+ s->len_chanlist = thisboard->fifoLen;
+ s->insn_read = &rtd_ai_rinsn;
+ s->do_cmd = &rtd_ai_cmd;
+ s->do_cmdtest = &rtd_ai_cmdtest;
+ s->cancel = &rtd_ai_cancel;
+
+ s=dev->subdevices+1;
+ /* analog output subdevice */
+ s->type = COMEDI_SUBD_UNUSED;
+ /*s->type=COMEDI_SUBD_AO;*/
+ s->subdev_flags=SDF_WRITEABLE;
+ s->n_chan =2;
+ s->maxdata =(1<<thisboard->aiBits)-1;
+ s->range_table = &rtd_ao_range;
+ s->insn_write = &rtd_ao_winsn;
+ s->insn_read = &rtd_ao_rinsn;
+
+ s=dev->subdevices+2;
+ /* digital i/o subdevice */
+ if (thisboard->haveDio){
+ s->type=COMEDI_SUBD_DIO;
+ s->subdev_flags=SDF_READABLE|SDF_WRITEABLE;
+ s->n_chan=16;
+ s->maxdata=1;
+ s->range_table=&range_digital;
+ s->insn_bits = rtd_dio_insn_bits;
+ s->insn_config = rtd_dio_insn_config;
+ } else {
+ s->type = COMEDI_SUBD_UNUSED;
+ }
+
+ s=dev->subdevices+3;
+ s->n_chan=3;
+ /* 3 timer/counter subdevices */
+ s->type = COMEDI_SUBD_UNUSED;
+
+ /* check if our interrupt is available and get it */
+ dev->irq = devpriv->pci_dev->irq;
+ if(dev->irq>0){
+ if((ret=comedi_request_irq (dev->irq, rtd_interrupt,
+ 0, "rtd520", dev))<0)
+ return ret;
+ printk("( irq = %d )\n", dev->irq);
+ } else {
+ printk("( NO IRQ )");
+ }
+
+ /* initialize board, per RTD spec */
+ RtdResetBoard (dev);
+ RtdInterruptMask (dev,0);
+ RtdInterruptClearMask (dev,~0);
+ RtdInterruptClear(dev); /* clears bits set by mask */
+ RtdInterruptOverrunClear(dev);
+ RtdClearCGT (dev);
+ RtdClearAdcFifo (dev);
+ /* clear DA FIFO */
+ /* clear digital IO */
+ if (dev->irq) { /* enable interrupt controller */
+ RtdPLXInterruptWrite (dev,
+ RtdPLXInterruptRead (dev) | (0x0800));
+ }
+
+ printk("comedi%d: rtd520 driver attached.\n", dev->minor);
+
+ return 1;
+}
+
+/*
+ * _detach is called to deconfigure a device. It should deallocate
+ * resources.
+ * This function is also called when _attach() fails, so it should be
+ * careful not to release resources that were not necessarily
+ * allocated by _attach(). dev->private and dev->subdevices are
+ * deallocated automatically by the core.
+ */
+static int rtd_detach (
+ comedi_device *dev)
+{
+ printk("comedi%d: rtd520: removing (%ld ints, %ld extra ai)\n(int status 0x%x, overrun status 0x%x, fifo status 0x%x)...\n",
+ dev->minor, devpriv->intCount, devpriv->aiExtraInt,
+ 0xffff & RtdInterruptStatus (dev),
+ 0xffff & RtdInterruptOverrunStatus (dev),
+ 0xffff & RtdFifoStatus (dev));
+ if (devpriv) {
+ /* Shut down any board ops by reseting it */
+ RtdResetBoard (dev);
+ RtdInterruptMask (dev, 0);
+ RtdInterruptClearMask (dev,~0);
+ RtdInterruptClear(dev); /* clears bits set by mask */
+ RtdClearCGT (dev);
+ RtdClearAdcFifo (dev);
+
+ /* release DMA */
+
+ /* release IRQ */
+ if (dev->irq) {
+ /* disable interrupt controller */
+ RtdPLXInterruptWrite (dev,
+ RtdPLXInterruptRead (dev) & ~(0x0800));
+ comedi_free_irq (dev->irq, dev);
+ }
+
+ /* release all regions that were allocated */
+ if (devpriv->las0) {
+ iounmap (devpriv->las0);
+ }
+ if (devpriv->las1) {
+ iounmap (devpriv->las1);
+ }
+ if (devpriv->lcfg) {
+ iounmap (devpriv->lcfg);
+ }
+ }
+
+ printk("comedi%d: rtd520: removed.\n",dev->minor);
+
+ return 0;
+}
+
+/*
+ Convert a single comedi channel-gain entry to a RTD520 table entry
+*/
+static unsigned short rtdConvertChanGain (
+ unsigned int comediChan)
+{
+ unsigned int chan, range, aref;
+ unsigned short r=0;
+
+ chan = CR_CHAN (comediChan);
+ range = CR_RANGE (comediChan);
+ aref = CR_AREF (comediChan);
+
+ r |= chan & 0xf;
+
+ /* TODO: Should also be able to switch into +-=10 range */
+ /* HACK!!! should not use a constant here */
+ if (range < 6) { /* first 6 are bipolar */
+ r |= 0x000; /* +-5 range */
+ r |= (range & 0x7) << 4; /* gain */
+ } else {
+ r |= 0x200; /* +10 range */
+ r |= ((range-6) & 0x7) << 4; /* gain */
+ }
+
+ switch (aref) {
+ case AREF_GROUND:
+ break;
+
+ case AREF_COMMON:
+ r |= 0x80; /* ref external analog common */
+ break;
+
+ case AREF_DIFF:
+ r |= 0x400; /* DIFF */
+ break;
+
+ case AREF_OTHER: /* ??? */
+ break;
+ }
+ printk ("chan=%d r=%d a=%d -> 0x%x\n",
+ chan, range, aref, r);
+ return r;
+}
+
+/*
+ Setup the channel-gain table from a comedi list
+*/
+static void rtd_load_channelgain_list (
+ comedi_device *dev,
+ unsigned int n_chan,
+ unsigned int *list)
+{
+ if (n_chan > 1) { /* setup channel gain table */
+ int ii;
+ RtdClearCGT (dev);
+ RtdEnableCGT(dev, 1); /* enable table */
+ for(ii=0; ii < n_chan; ii++){
+ RtdWriteCGTable (dev, rtdConvertChanGain (list[ii]));
+ }
+ } else { /* just use the channel gain latch */
+ RtdEnableCGT(dev, 0); /* disable table, enable latch */
+ RtdWriteCGLatch (dev, rtdConvertChanGain (list[0]));
+ }
+}
+
+/*
+ "instructions" read/write data in "one-shot" or "software-triggered"
+ mode (simplest case).
+ This doesnt use interrupts.
+ */
+static int rtd_ai_rinsn (
+ comedi_device *dev,
+ comedi_subdevice *s,
+ comedi_insn *insn,
+ lsampl_t *data)
+{
+ int n, ii;
+ int stat;
+ /* clear channel gain table */
+ /* write channel to multiplexer */
+ rtd_load_channelgain_list (dev, 1, &insn->chanspec);
+
+ /* set conversion source */
+ RtdAdcConversionSource (dev, 0); /* software */
+
+ /* wait for mux to settle */
+ udelay (RTD_SETTLE_DELAY);
+
+ /* clear any old fifo data */
+ RtdClearAdcFifo (dev);
+
+ stat = RtdFifoStatus (dev); /* DEBUG */
+ if (stat & FS_ADC_EMPTY) { /* 1 -> not empty */
+ printk ("rtd520: Warning: fifo didn't seem to clear! FifoStatus=0x%x\n",
+ stat);
+ }
+
+ /* convert n samples */
+ for (n=0; n < insn->n; n++) {
+ s16 d;
+ /* trigger conversion */
+ RtdAdcStart (dev);
+
+ /* wait for conversion to end */
+ udelay ((2*RTD_MAX_SPEED + RTD_MAX_SPEED - 1)/1000);
+ for (ii = 0; ii < RTD_ADC_TIMEOUT; ++ii) {
+ /* by delaying here, we try to reduce system electrical noise */
+ udelay (1);
+ stat = RtdFifoStatus (dev);
+ if (stat & FS_ADC_EMPTY) /* 1 -> not empty */
+ break;
+ }
+ if (ii >= RTD_ADC_TIMEOUT) {
+ printk ("rtd520: Error: Never got ADC done flag! FifoStatus=0x%x\n",
+ stat);
+ return -ETIMEDOUT;
+ }
+
+ /* read data */
+ d = RtdAdcFifoGet (dev); /* get 2s comp value */
+ /*printk ("rtd520: Got 0x%x after %d usec\n", d, ii+1);*/
+ d = d >> 3; /* low 3 bits are marker lines */
+ data[n] = d + 2048; /* convert to comedi unsigned data */
+ }
+
+ /* return the number of samples read/written */
+ return n;
+}
+
+/*
+ Fifo is a least half full. Get what we know is there.... Fast!
+ This uses 1/2 the bus cycles of read_dregs (below).
+
+ The manual claims that we can do a lword read, but it doesn't work here.
+*/
+static void ai_read_half_fifo (
+ comedi_device *dev,
+ comedi_subdevice *s)
+{
+ int ii;
+
+ for (ii = 0; ii < thisboard->fifoLen / 2; ii++) {
+ s16 d = RtdAdcFifoGet (dev); /* get 2s comp value */
+ d = d >> 3; /* low 3 bits are marker lines */
+
+ if (devpriv->aiCount <= 0) {
+ /* should never happen */
+ devpriv->aiExtraInt++;
+ continue;
+ }
+
+ /* check and deal with buffer wrap */
+ if (s->async->buf_int_ptr >= s->async->data_len) {
+ s->async->buf_int_ptr = 0;
+ comedi_eobuf(dev, s);
+ }
+ /* write into buffer */
+ *((sampl_t *)((void *)s->async->data + s->async->buf_int_ptr))
+ = d + 2048; /* convert to comedi unsigned data */
+ s->async->buf_int_count += sizeof(sampl_t);
+ s->async->buf_int_ptr += sizeof(sampl_t);
+ devpriv->aiCount--;
+ }
+}
+
+/*
+ unknown amout of data is waiting in fifo.
+*/
+static void ai_read_dregs (
+ comedi_device *dev,
+ comedi_subdevice *s)
+{
+ while (RtdFifoStatus (dev) & FS_ADC_EMPTY) { /* 1 -> not empty */
+ s16 d = RtdAdcFifoGet (dev); /* get 2s comp value */
+
+ d = d >> 3; /* low 3 bits are marker lines */
+
+ if (devpriv->aiCount <= 0) {
+ /* should never happen */
+ devpriv->aiExtraInt++;
+ continue;
+ }
+
+ /* check and deal with buffer wrap */
+ if (s->async->buf_int_ptr >= s->async->data_len) {
+ s->async->buf_int_ptr = 0;
+ comedi_eobuf(dev, s);
+ }
+ /* write into buffer */
+ *((sampl_t *)((void *)s->async->data + s->async->buf_int_ptr))
+ = d + 2048; /* convert to comedi unsigned data */
+ s->async->buf_int_count += sizeof(sampl_t);
+ s->async->buf_int_ptr += sizeof(sampl_t);
+ devpriv->aiCount--;
+ }
+}
+
+/*
+ Handle all rtd520 interrupts.
+ Runs atomically and is never re-entered.
+ This is a "slow handler"; other interrupts may be active.
+ The data conversion may someday happen in a "bottom half".
+*/
+static void rtd_interrupt (
+ int irq, /* interrupt number (ignored) */
+ void *d, /* our data */
+ struct pt_regs *regs) /* cpu context (ignored) */
+{
+ comedi_device *dev = d; /* must be called "dev" for devpriv */
+ u16 status = RtdInterruptStatus (dev);
+
+ devpriv->intCount++;
+
+ /* if interrupt was not caused by our board */
+ /* needed??? we dont claim to share interrupt lines */
+ if ((0 == status)
+ || !(dev->attached)) {
+ return;
+ }
+ /* Either end if a sequence (about), or time to flush the fifo (sample) */
+ /* You can only interrupt on fifo half full if doing DMA */
+ if (status & (IRQM_ADC_ABOUT_CNT | IRQM_ADC_SAMPLE_CNT)) {
+ comedi_subdevice *s = dev->subdevices + 0; /* analog in subdevice */
+ /* only read in big chunks */
+ if (RtdFifoStatus (dev) & FS_ADC_HEMPTY) {
+ ai_read_half_fifo (dev, s);
+ comedi_bufcheck (dev, s); /* signal something there */
+ }
+
+ if (status & IRQM_ADC_ABOUT_CNT) { /* about counter terminated */
+ if (devpriv->aboutWrap) { /* multi-count wraps */
+ if (0 == devpriv->aiCount) { /* done! stop! */
+ RtdPacerStop (dev); /* Stop PACER */
+ RtdInterruptMask (dev, 0); /* mask out ABOUT and SAMPLE */
+ ai_read_dregs (dev, s);
+ comedi_done (dev, s); /* signal end to comedi */
+ } else if (devpriv->aiCount < devpriv->aboutWrap) {
+ RtdAboutStopEnable (dev, 0); /* enable stop */
+ devpriv->aboutWrap = 0;
+ }
+ } else { /* done */
+ /* TODO: allow multiple interrupt sources */
+ RtdInterruptMask (dev, 0);/* mask out ABOUT and SAMPLE */
+ ai_read_dregs (dev, s);
+
+ comedi_done (dev, s); /* signal end to comedi */
+ }
+ }
+
+ }
+ /* clear the interrupt */
+ RtdInterruptClearMask (dev, status);
+ RtdInterruptClear (dev);
+}
+
+/*
+ cmdtest tests a particular command to see if it is valid.
+ Using the cmdtest ioctl, a user can create a valid cmd
+ and then have it executed by the cmd ioctl (asyncronously).
+
+ cmdtest returns 1,2,3,4 or 0, depending on which tests
+ the command passes.
+*/
+
+static int
+rtd_ai_cmdtest (
+ comedi_device *dev,
+ comedi_subdevice *s,
+ comedi_cmd *cmd)
+{
+ int err=0;
+ int tmp;
+
+ /* step 1: make sure trigger sources are trivially valid */
+
+ tmp = cmd->start_src;
+ cmd->start_src &= TRIG_NOW;
+ if (!cmd->start_src && tmp != cmd->start_src) {
+ printk ("rtd520: cmdtest error! start_src does not include NOW %x\n",
+ cmd->start_src);
+ err++;
+ }
+
+ tmp=cmd->scan_begin_src;
+ cmd->scan_begin_src &= TRIG_TIMER|TRIG_EXT;
+ if (!cmd->scan_begin_src && tmp != cmd->scan_begin_src) {
+ printk ("rtd520: cmdtest error! scan_begin_src includes neither TIMER or EXT %x\n",
+ cmd->scan_begin_src);
+ err++;
+ }
+
+ tmp=cmd->convert_src;
+ cmd->convert_src &= TRIG_TIMER|TRIG_EXT;
+ if (!cmd->convert_src && tmp != cmd->convert_src) {
+ printk ("rtd520: cmdtest error! convert_src includes neither TIMER or EXT %x\n",
+ cmd->convert_src);
+ err++;
+ }
+
+ tmp=cmd->scan_end_src;
+ cmd->scan_end_src &= TRIG_COUNT;
+ if (!cmd->scan_end_src && tmp != cmd->scan_end_src) {
+ printk ("rtd520: cmdtest error! scan_end_src does not include COUNT %x\n",
+ cmd->scan_end_src);
+ err++;
+ }
+
+ tmp=cmd->stop_src;
+ cmd->stop_src &= TRIG_COUNT|TRIG_NONE;
+ if (!cmd->stop_src && tmp != cmd->stop_src) {
+ printk ("rtd520: cmdtest error! stop_src includes neither COUNT or NONE %x\n",
+ cmd->stop_src);
+ err++;
+ }
+
+ if (err)
+ return 1;
+
+ /* step 2: make sure trigger sources are unique
+ and mutually compatible */
+#if 0
+ /* note that mutual compatiblity is not an issue here */
+ if (cmd->scan_begin_src !=TRIG_TIMER &&
+ cmd->scan_begin_src !=TRIG_EXT) {
+ err++;
+ }
+ if (cmd->convert_src !=TRIG_TIMER &&
+ cmd->convert_src !=TRIG_EXT) {
+ err++;
+ }
+ if (cmd->stop_src != TRIG_TIMER &&
+ cmd->stop_src != TRIG_EXT) {
+ err++;
+ }
+
+ if (err) {
+ printk ("rtd520: cmdtest error! Some trigger compatibility test failed.\n");
+ return 2;
+ }
+#endif
+
+ /* step 3: make sure arguments are trivially compatible */
+
+ if (cmd->start_arg != 0) {
+ cmd->start_arg = 0;
+ printk ("rtd520: cmdtest: start_arg not 0\n");
+ err++;
+ }
+
+ if (cmd->scan_begin_src == TRIG_TIMER){
+ if (cmd->scan_begin_arg < RTD_MAX_SPEED) {
+ cmd->scan_begin_arg = RTD_MAX_SPEED;
+ printk ("rtd520: cmdtest: scan rate greater than max.\n");
+ err++;
+ }
+ if (cmd->scan_begin_arg > RTD_MIN_SPEED) {
+ cmd->scan_begin_arg = RTD_MIN_SPEED;
+ printk ("rtd520: cmdtest: scan rate lower than min.\n");
+ err++;
+ }
+ } else {
+ /* external trigger */
+ /* should be level/edge, hi/lo specification here */
+ /* should specify multiple external triggers */
+ if (cmd->scan_begin_arg > 9) {
+ cmd->scan_begin_arg = 9;
+ printk ("rtd520: cmdtest: scan_begin_arg out of range\n");
+ err++;
+ }
+ }
+ if (cmd->convert_src==TRIG_TIMER) {
+ if (cmd->convert_arg < RTD_MAX_SPEED) {
+ cmd->convert_arg = RTD_MAX_SPEED;
+ printk ("rtd520: cmdtest: convert rate greater than max.\n");
+ err++;
+ }
+ if (cmd->convert_arg > RTD_MIN_SPEED) {
+ cmd->convert_arg = RTD_MIN_SPEED;
+ printk ("rtd520: cmdtest: convert rate lower than min.\n");
+ err++;
+ }
+ } else {
+ /* external trigger */
+ /* see above */
+ if (cmd->convert_arg > 9) {
+ cmd->convert_arg = 9;
+ printk ("rtd520: cmdtest: convert_arg out of range\n");
+ err++;
+ }
+ }
+
+#if 0
+ if (cmd->scan_end_arg != cmd->chanlist_len) {
+ cmd->scan_end_arg = cmd->chanlist_len;
+ err++;
+ }
+#endif
+ if (cmd->stop_src==TRIG_COUNT) {
+ /* TODO check for rounding error due to counter wrap */
+
+ } else {
+ /* TRIG_NONE */
+ if (cmd->stop_arg!=0) {
+ cmd->stop_arg=0;
+ printk ("rtd520: cmdtest: stop_arg not 0\n");
+ err++;
+ }
+ }
+
+ if (err) {
+ printk ("rtd520: cmdtest error! Some argument compatibility test failed.\n");
+ return 3;
+ }
+
+ /* step 4: fix up any arguments */
+
+ if (cmd->scan_begin_src == TRIG_TIMER) {
+ tmp=cmd->scan_begin_arg;
+ rtd_ns_to_timer(&cmd->scan_begin_arg,
+ cmd->flags&TRIG_ROUND_MASK);
+ if (tmp!=cmd->scan_begin_arg) {
+ err++;
+ }
+ }
+ if (cmd->convert_src == TRIG_TIMER){
+ tmp=cmd->convert_arg;
+ rtd_ns_to_timer(&cmd->convert_arg,
+ cmd->flags&TRIG_ROUND_MASK);
+ if (tmp!=cmd->convert_arg) {
+ err++;
+ }
+ if (cmd->scan_begin_src == TRIG_TIMER
+ && (cmd->scan_begin_arg
+ < (cmd->convert_arg * cmd->scan_end_arg))) {
+ cmd->scan_begin_arg=cmd->convert_arg*cmd->scan_end_arg;
+ err++;
+ }
+ }
+
+ if (err) {
+ printk ("rtd520: cmdtest error! Some timer value was altered.\n");
+ return 4;
+ }
+
+ return 0;
+}
+
+/*
+ Execute a analog in command with many possible triggering options.
+ The data get stored in the async structure of the subdevice.
+ This is usually done by an interrupt handler.
+ Userland gets to the data using read calls.
+*/
+static int rtd_ai_cmd (
+ comedi_device *dev,
+ comedi_subdevice *s)
+{
+ comedi_cmd *cmd=&s->async->cmd;
+ int timer;
+ int justPoll = 0; /* can we do a simple poll */
+
+ /* stop anything currently running */
+ RtdPacerStop (dev); /* Stop PACER */
+
+ /* start configuration */
+ rtd_load_channelgain_list (dev, cmd->chanlist_len, cmd->chanlist);
+
+ /* setup the common case and override if needed */
+ if (cmd->chanlist_len > 1) {
+ printk ("rtd520: Multi channel setup\n");
+ RtdPacerStartSource (dev, 0); /* software triggers pacer */
+ RtdBurstStartSource (dev, 1); /* PACER triggers burst */
+ RtdAdcConversionSource (dev, 2); /* BURST triggers ADC */
+ } else { /* single channel */
+ printk ("rtd520: single channel setup\n");
+ RtdPacerStartSource (dev, 0); /* software triggers pacer */
+ RtdAdcConversionSource (dev, 1); /* PACER triggers ADC */
+ }
+
+ RtdAdcSampleCounter (dev, /* setup a periodic interrupt */
+ (thisboard->fifoLen > 1024) ? 1023 : 511);
+ RtdPacerStopSource (dev, 3); /* stop on ABOUT count down*/
+ RtdAboutStopEnable (dev, 0); /* actually stop (see below) */
+ RtdPacerClockSource (dev, 1); /* use INTERNAL 8Mhz clock source */
+ RtdAdcSampleCounterSource (dev, 1); /* count samples, not scans */
+
+ /* BUG!!! these look like enumerated values, but they are bit fields */
+
+ /* First, setup when to stop */
+ switch(cmd->stop_src){
+ case TRIG_COUNT: /* stop after N scans */
+ if ((cmd->chanlist_len <= 1) /* no scanning to do */
+ && (cmd->stop_arg <= 1)) {
+ justPoll = 1;
+ RtdAdcConversionSource (dev, 0); /* SOFTWARE trigger */
+ } else {
+ int n = cmd->stop_arg * cmd->chanlist_len;
+ /* load about counter (16bit) with number of SAMPLES */
+ devpriv->aiCount = n;
+ if (n <= 0x10000) {
+ /* Note: stop on underflow. Load with N-1 */
+ printk ("rtd520: loading %d into about\n", n - 1);
+ devpriv->aboutWrap = 0;
+ RtdAboutCounter (dev, n - 1);
+ } else { /* multiple counter wraps */
+ int mm, dd;
+
+ /* interrupt on ABOUT wrap, until last wrap */
+ mm = n & 0xffff;
+ dd = n / mm; /* effective divisor */
+ while (mm < 0xfff) { /* make sure we have time to arm */
+ dd++;
+ mm = (n + dd-1) / dd; /* round up, if needed */
+ }
+ /* TODO fix round error */
+ printk ("rtd520: Warning! count value %d > 65536 using %d\n",
+ n, mm);
+ devpriv->aboutWrap = mm;
+ RtdAboutCounter (dev, mm-1);
+ RtdAboutStopEnable (dev, 1); /* just interrupt */
+ }
+ }
+
+ break;
+
+ case TRIG_NONE: /* stop when cancel is called */
+ RtdPacerStopSource (dev, 0); /* stop on SOFTWARE stop */
+ break;
+
+ default:
+ printk ("rtd520: Warning! ignoring stop_src mode %d\n",
+ cmd->stop_src);
+ }
+
+
+ /* Scan timing */
+ switch (cmd->scan_begin_src) {
+ case TRIG_TIMER: /* periodic scanning */
+ timer=rtd_ns_to_timer(&cmd->scan_begin_arg,TRIG_ROUND_NEAREST);
+ /* set PACER clock */
+ printk ("rtd520: loading %d into pacer for %dns\n",
+ timer, cmd->scan_begin_arg);
+ RtdPacerCounter (dev, timer);
+
+ break;
+
+ case TRIG_EXT:
+ RtdPacerStartSource (dev, 1); /* EXTERNALy trigger pacer */
+ break;
+
+ default:
+ printk ("rtd520: Warning! ignoring scan_begin_src mode %d\n",
+ cmd->scan_begin_src);
+ }
+
+ /* Sample timing within a scan */
+ switch(cmd->convert_src){
+ case TRIG_TIMER: /* periodic */
+ timer=rtd_ns_to_timer(&cmd->convert_arg,TRIG_ROUND_NEAREST);
+ /* setup BURST clock */
+ printk ("rtd520: loading %d into burst\n", timer);
+ RtdBurstCounter (dev, timer);
+
+ break;
+
+ case TRIG_EXT: /* external */
+ RtdBurstStartSource (dev, 2); /* EXTERNALy trigger burst */
+ break;
+
+ default:
+ printk ("rtd520: Warning! ignoring convert_src mode %d\n",
+ cmd->convert_src);
+ }
+
+
+ /* end configuration */
+
+ /* start_src is ASSUMED to be TRIG_NOW */
+ /* initial settling */
+ udelay (RTD_SETTLE_DELAY);
+ /* clear any old data */
+ RtdClearAdcFifo (dev);
+
+ /* see if we can do a simple polled input */
+ if (justPoll) {
+ int stat = RtdFifoStatus (dev); /* DEBUG */
+ s16 d;
+ int ii;
+
+ /* DEBUG */
+ if (stat & FS_ADC_EMPTY) { /* 1 -> not empty */
+ printk ("rtd520: ai_cmd Warning: fifo didn't seem to clear! FifoStatus=0x%x\n",
+ stat);
+ } else {
+ printk ("rtd520: ai_cmd: polling for sample.\n");
+ }
+
+ /* trigger conversion */
+ RtdAdcStart (dev);
+
+ udelay ((2*RTD_MAX_SPEED + RTD_MAX_SPEED - 1)/1000);
+ /* right now, this means just 1 sample. emulate ai_rinsn */
+ for (ii = 0; ii < RTD_ADC_TIMEOUT; ++ii) {
+ /* by delaying here, we try to reduce system electrical noise */
+ udelay (1);
+ stat = RtdFifoStatus (dev);
+ if (stat & FS_ADC_EMPTY) /* 1 -> not empty */
+ break;
+ }
+ if (ii >= RTD_ADC_TIMEOUT) {
+ printk ("rtd520: ai_cmd Error: Never got data in FIFO! FifoStatus=0x%x\n",
+ stat);
+ return -ETIMEDOUT;
+ }
+
+ /* read data */
+ d = RtdAdcFifoGet (dev); /* get 2s comp value */
+ /*printk ("rtd520: Got 0x%x after %d usec\n", d, ii+1);*/
+ d = d >> 3; /* low 3 bits are marker lines */
+
+ /* write into buffer */
+ *((sampl_t *)((void *)s->async->data + s->async->buf_int_ptr))
+ = d + 2048; /* convert to comedi unsigned data */
+ s->async->buf_int_count += sizeof(sampl_t);
+ s->async->buf_int_ptr += sizeof(sampl_t);
+ comedi_done (dev, s);
+ } else {
+ /* interrupt setup */
+ if (! dev->irq) {
+ printk ("rtd520: ERROR! No interrupt available!\n");
+ return -ENXIO;
+ }
+
+ printk("rtd520: using interrupts. (%ld ints, %ld extra ai)\n(int status 0x%x, overrun status 0x%x, fifo status 0x%x)\n",
+ devpriv->intCount, devpriv->aiExtraInt,
+ 0xffff & RtdInterruptStatus (dev),
+ 0xffff & RtdInterruptOverrunStatus (dev),
+ 0xffff & RtdFifoStatus (dev));
+
+ RtdInterruptClearMask (dev, ~0); /* clear any existing flags */
+ RtdInterruptClear (dev);
+ /*DEBUG RtdInterruptOverrunClear(dev);*/
+
+ /* TODO: allow multiple interrupt sources */
+ if (devpriv->aiCount > 512) {
+ RtdInterruptMask (dev, IRQM_ADC_ABOUT_CNT | IRQM_ADC_SAMPLE_CNT );
+ } else {
+ RtdInterruptMask (dev, IRQM_ADC_ABOUT_CNT);
+ }
+
+ RtdPacerStart (dev); /* Start PACER */
+ }
+ return 0;
+}
+
+/*
+ Stop a running data aquisition.
+*/
+static int rtd_ai_cancel (
+ comedi_device *dev,
+ comedi_subdevice *s)
+{
+ /* more is probably needed here */
+ RtdPacerStop (dev); /* Stop PACER */
+ RtdAdcConversionSource (dev, 0); /* software trigger only */
+ return 0;
+}
+
+/*
+ Given a desired period and the clock period (both in ns),
+ return the proper counter value (divider-1).
+ Sets the original period to be the true value.
+ Note: you have to check if the value is larger than the counter range!
+*/
+static int rtd_ns_to_timer_base (
+ unsigned int *nanosec, /* desired period (in ns) */
+ int round_mode,
+ double base) /* clock period (in ns) */
+{
+ int divider;
+
+ switch(round_mode){
+ case TRIG_ROUND_NEAREST:
+ default:
+ divider=(*nanosec+base/2)/base;
+ break;
+ case TRIG_ROUND_DOWN:
+ divider=(*nanosec)/base;
+ break;
+ case TRIG_ROUND_UP:
+ divider=(*nanosec+base-1)/base;
+ break;
+ }
+ if (divider < 2) divider = 2; /* min is divide by 2 */
+
+ /* Note: we don't check for max, because different timers
+ have different ranges */
+
+ *nanosec=base*divider;
+ return divider - 1; /* countdown is divisor+1 */
+}
+
+/*
+ Given a desired period (in ns),
+ return the proper counter value (divider-1) for the internal clock.
+ Sets the original period to be the true value.
+*/
+static int rtd_ns_to_timer (
+ unsigned int *ns,
+ int round_mode)
+{
+ return rtd_ns_to_timer_base (ns, round_mode, RTD_CLOCK_BASE);
+}
+
+static int rtd_ao_winsn (
+ comedi_device *dev,
+ comedi_subdevice *s,
+ comedi_insn *insn,
+ lsampl_t *data)
+{
+ int i;
+ int chan = CR_CHAN(insn->chanspec);
+
+ /* Writing a list of values to an AO channel is probably not
+ * very useful, but that's how the interface is defined. */
+ for(i=0;i<insn->n;i++){
+ /* a typical programming sequence */
+ //outw(data[i],dev->iobase + RTD_DA0 + chan);
+ devpriv->ao_readback[chan] = data[i];
+ }
+
+ /* return the number of samples read/written */
+ return 1;
+}
+
+/* AO subdevices should have a read insn as well as a write insn.
+ * Usually this means copying a value stored in devpriv. */
+static int rtd_ao_rinsn (
+ 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;
+}
+
+/* DIO devices are slightly special. Although it is possible to
+ * implement the insn_read/insn_write interface, it is much more
+ * useful to applications if you implement the insn_bits interface.
+ * This allows packed reading/writing of the DIO channels. The
+ * comedi core can convert between insn_bits and insn_read/write */
+static int rtd_dio_insn_bits (
+ comedi_device *dev,
+ comedi_subdevice *s,
+ comedi_insn *insn,
+ lsampl_t *data)
+{
+ if (insn->n!=2) return -EINVAL;
+
+ /* The insn data is a mask in data[0] and the new data
+ * in data[1], each channel cooresponding to a bit. */
+ if (data[0]) {
+ s->state &= ~data[0];
+ s->state |= data[0]&data[1];
+ /* Write out the new digital output lines */
+ //outw(s->state,dev->iobase + RTD_DIO);
+ }
+ /* on return, data[1] contains the value of the digital
+ * input lines. */
+ //data[1]=inw(dev->iobase + RTD_DIO);
+
+ return 2;
+}
+
+static int rtd_dio_insn_config (
+ comedi_device *dev,
+ comedi_subdevice *s,
+ comedi_insn *insn,
+ lsampl_t *data)
+{
+ int chan=CR_CHAN(insn->chanspec);
+
+ if (insn->n!=1) return -EINVAL;
+
+ /* The input or output configuration of each digital line is
+ * configured by a special insn_config instruction. chanspec
+ * contains the channel to be changed, and data[0] contains the
+ * value COMEDI_INPUT or COMEDI_OUTPUT. */
+
+ if (data[0]==COMEDI_OUTPUT) {
+ s->io_bits |= 1<<chan;
+ } else {
+ s->io_bits &= ~(1<<chan);
+ }
+ //outw(s->io_bits,dev->iobase + RTD_DIO_CONFIG);
+
+ return 1;
+}
+
+
+/*
+ * A convenient macro that defines init_module() and cleanup_module(),
+ * as necessary.
+ */
+COMEDI_INITCLEANUP(rtd520Driver);
+
--- /dev/null
+/*
+ comedi/drivers/rtd520.h
+ Comedi driver defines for Real Time Devices (RTD) PCI4520/DM7520
+
+ COMEDI - Linux Control and Measurement Device Interface
+ Copyright (C) 2001 David A. Schleef <ds@schleef.org>
+
+ 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.
+*/
+
+/*
+ Created by Dan Christian, NASA Ames Research Center.
+ See board notes in rtd520.c
+*/
+
+/*
+ LAS0 Runtime Area
+ Local Address Space 0 Offset Read Function Write Function
+*/
+#define LAS0_SPARE_00 0x0000 // - -
+#define LAS0_SPARE_04 0x0004 // - -
+#define LAS0_USER_IO 0x0008 // Read User Inputs Write User Outputs
+#define LAS0_SPARE_0C 0x000C // - -
+#define LAS0_ADC 0x0010 // Read FIFO Status Software A/D Start
+#define LAS0_DAC1 0x0014 // - Software D/A1 Update
+#define LAS0_DAC2 0x0018 // - Software D/A2 Update
+#define LAS0_SPARE_1C 0x001C // - -
+#define LAS0_SPARE_20 0x0020 // - -
+#define LAS0_DAC 0x0024 // - Software Simultaneous D/A1 and D/A2 Update
+#define LAS0_PACER 0x0028 // Software Pacer Start Software Pacer Stop
+#define LAS0_TIMER 0x002C // Read Timer Counters Status HDIN Software Trigger
+#define LAS0_IT 0x0030 // Read Interrupt Status Write Interrupt Enable Mask Register
+#define LAS0_CLEAR 0x0034 // Clear ITs set by Clear Mask Set Interrupt Clear Mask
+#define LAS0_OVERRUN 0x0038 // Read pending interrupts Clear Overrun Register
+#define LAS0_SPARE_3C 0x003C // - -
+
+/*
+ LAS0 Runtime Area Timer/Counter,Dig.IO
+ Name Local Address Function
+*/
+#define LAS0_PCLK 0x0040 // Pacer Clock value (24bit) Pacer Clock load (24bit)
+#define LAS0_BCLK 0x0044 // Burst Clock value (10bit) Burst Clock load (10bit)
+#define LAS0_ADC_SCNT 0x0048 // A/D Sample counter value (10bit) A/D Sample counter load (10bit)
+#define LAS0_DAC1_UCNT 0x004C // D/A1 Update counter value (10 bit) D/A1 Update counter load (10bit)
+#define LAS0_DAC2_UCNT 0x0050 // D/A2 Update counter value (10 bit) D/A2 Update counter load (10bit)
+#define LAS0_DCNT 0x0054 // Delay counter value (16 bit) Delay counter load (16bit)
+#define LAS0_ACNT 0x0058 // About counter value (16 bit) About counter load (16bit)
+#define LAS0_DAC_CLK 0x005C // DAC clock value (16bit) DAC clock load (16bit)
+#define LAS0_UTC0 0x0060 // 8254 TC Counter 0 User TC 0 value Load count in TC Counter 0
+#define LAS0_UTC1 0x0064 // 8254 TC Counter 1 User TC 1 value Load count in TC Counter 1
+#define LAS0_UTC2 0x0068 // 8254 TC Counter 2 User TC 2 value Load count in TC Counter 2
+#define LAS0_UTC_CTRL 0x006C // 8254 TC Control Word Program counter mode for TC
+#define LAS0_DIO0 0x0070 // Digital I/O Port 0 Read Port Digital I/O Port 0 Write Port
+#define LAS0_DIO1 0x0074 // Digital I/O Port 1 Read Port Digital I/O Port 1 Write Port
+#define LAS0_DIO0_CTRL 0x0078 // Clear digital IRQ status flag/read Clear digital chip/program Port 0
+#define LAS0_DIO_STATUS 0x007C // Read Digital I/O Status word Program digital control register &
+
+/*
+ LAS0 Setup Area
+ Name Local Address Function
+*/
+#define LAS0_BOARD_RESET 0x0100 // Board reset
+#define LAS0_DMA0_SRC 0x0104 // DMA 0 Sources select
+#define LAS0_DMA1_SRC 0x0108 // DMA 1 Sources select
+#define LAS0_ADC_CONVERSION 0x010C // A/D Conversion Signal select
+#define LAS0_BURST_START 0x0110 // Burst Clock Start Trigger select
+#define LAS0_PACER_START 0x0114 // Pacer Clock Start Trigger select
+#define LAS0_PACER_STOP 0x0118 // Pacer Clock Stop Trigger select
+#define LAS0_ACNT_STOP_ENABLE 0x011C // About Counter Stop Enable
+#define LAS0_PACER_REPEAT 0x0120 // Pacer Start Trigger Mode select
+#define LAS0_DIN_START 0x0124 // High Speed Digital Input Sampling Signal select
+#define LAS0_DIN_FIFO_CLEAR 0x0128 // Digital Input FIFO Clear
+#define LAS0_ADC_FIFO_CLEAR 0x012C // A/D FIFO Clear
+#define LAS0_CGT_WRITE 0x0130 // Channel Gain Table Write
+#define LAS0_CGL_WRITE 0x0134 // Channel Gain Latch Write
+#define LAS0_CG_DATA 0x0138 // Digital Table Write
+#define LAS0_CGT_ENABLE 0x013C // Channel Gain Table Enable
+#define LAS0_CG_ENABLE 0x0140 // Digital Table Enable
+#define LAS0_CGT_PAUSE 0x0144 // Table Pause Enable
+#define LAS0_CGT_RESET 0x0148 // Reset Channel Gain Table
+#define LAS0_CGT_CLEAR 0x014C // Clear Channel Gain Table
+#define LAS0_DAC1_CTRL 0x0150 // D/A1 output type/range
+#define LAS0_DAC1_SRC 0x0154 // D/A1 update source
+#define LAS0_DAC1_CYCLE 0x0158 // D/A1 cycle mode
+#define LAS0_DAC1_RESET 0x015C // D/A1 FIFO reset
+#define LAS0_DAC1_FIFO_CLEAR 0x0160 // D/A1 FIFO clear
+#define LAS0_DAC2_CTRL 0x0164 // D/A2 output type/range
+#define LAS0_DAC2_SRC 0x0168 // D/A2 update source
+#define LAS0_DAC2_CYCLE 0x016C // D/A2 cycle mode
+#define LAS0_DAC2_RESET 0x0170 // D/A2 FIFO reset
+#define LAS0_DAC2_FIFO_CLEAR 0x0174 // D/A2 FIFO clear
+#define LAS0_ADC_SCNT_SRC 0x0178 // A/D Sample Counter Source select
+#define LAS0_PACER_SELECT 0x0180 // Pacer Clock select
+#define LAS0_SBUS0_SRC 0x0184 // SyncBus 0 Source select
+#define LAS0_SBUS0_ENABLE 0x0188 // SyncBus 0 enable
+#define LAS0_SBUS1_SRC 0x018C // SyncBus 1 Source select
+#define LAS0_SBUS1_ENABLE 0x0190 // SyncBus 1 enable
+#define LAS0_SBUS2_SRC 0x0198 // SyncBus 2 Source select
+#define LAS0_SBUS2_ENABLE 0x019C // SyncBus 2 enable
+#define LAS0_ETRG_POLARITY 0x01A4 // External Trigger polarity select
+#define LAS0_EINT_POLARITY 0x01A8 // External Interrupt polarity select
+#define LAS0_UTC0_CLOCK 0x01AC // UTC0 Clock select
+#define LAS0_UTC0_GATE 0x01B0 // UTC0 Gate select
+#define LAS0_UTC1_CLOCK 0x01B4 // UTC1 Clock select
+#define LAS0_UTC1_GATE 0x01B8 // UTC1 Gate select
+#define LAS0_UTC2_CLOCK 0x01BC // UTC2 Clock select
+#define LAS0_UTC2_GATE 0x01C0 // UTC2 Gate select
+#define LAS0_UOUT0_SELECT 0x01C4 // User Output 0 source select
+#define LAS0_UOUT1_SELECT 0x01C8 // User Output 1 source select
+#define LAS0_DMA0_RESET 0x01CC // DMA0 Request state machine reset
+#define LAS0_DMA1_RESET 0x01D0 // DMA1 Request state machine reset
+
+/*
+ LAS1
+ Name Local Address Function
+*/
+#define LAS1_ADC_FIFO 0x0000 // Read A/D FIFO (16bit) -
+#define LAS1_HDIO_FIFO 0x0004 // Read High Speed Digital Input FIFO (16bit) -
+#define LAS1_DAC1_FIFO 0x0008 // - Write D/A1 FIFO (16bit)
+#define LAS1_DAC2_FIFO 0x000C // - Write D/A2 FIFO (16bit)
+
+/*
+ LCFG: PLX 9080 local config & runtime registers
+ Name Local Address Function
+*/
+#define LCFG_ITCSR 0x0068 // INTCSR, Interrupt Control/Status Register
+#define LCFG_DMAMODE0 0x0080 // DMA Channel 0 Mode Register
+#define LCFG_DMAPADR0 0x0084 // DMA Channel 0 PCI Address Register
+#define LCFG_DMALADR0 0x0088 // DMA Channel 0 Local Address Register
+#define LCFG_DMASIZ0 0x008C // DMA Channel 0 Transfer Size (Bytes) Register
+#define LCFG_DMADPR0 0x0090 // DMA Channel 0 Descriptor Pointer Register
+#define LCFG_DMAMODE1 0x0094 // DMA Channel 1 Mode Register
+#define LCFG_DMAPADR1 0x0098 // DMA Channel 1 PCI Address Register
+#define LCFG_DMALADR1 0x009C // DMA Channel 1 Local Address Register
+#define LCFG_DMASIZ1 0x00A0 // DMA Channel 1 Transfer Size (Bytes) Register
+#define LCFG_DMADPR1 0x00A4 // DMA Channel 1 Descriptor Pointer Register
+#define LCFG_DMACSR0 0x00A8 // DMA Channel 0 Command/Status Register
+#define LCFG_DMACSR1 0x00A9 // DMA Channel 0 Command/Status Register
+#define LCFG_DMAARB 0x00AC // DMA Arbitration Register
+#define LCFG_DMATHR 0x00B0 // DMA Threshold Register
+
+
+
+/*======================================================================
+ Resister bit definitions
+======================================================================*/
+
+// FIFO Status Word Bits (RtdFifoStatus)
+#define FS_DAC1_EMPTY 0x0001 // D0 - DAC1 FIFO not empty
+#define FS_DAC1_HEMPTY 0x0002 // D1 - DAC1 FIFO not half empty
+#define FS_DAC1_FULL 0x0004 // D2 - DAC1 FIFO not full
+#define FS_DAC2_EMPTY 0x0010 // D4 - DAC2 FIFO not empty
+#define FS_DAC2_HEMPTY 0x0020 // D5 - DAC2 FIFO not half empty
+#define FS_DAC2_FULL 0x0040 // D6 - DAC2 FIFO not full
+#define FS_ADC_EMPTY 0x0100 // D8 - ADC FIFO not empty
+#define FS_ADC_HEMPTY 0x0200 // D9 - ADC FIFO not half empty
+#define FS_ADC_FULL 0x0400 // D10 - ADC FIFO not full
+#define FS_DIN_EMPTY 0x1000 // D12 - DIN FIFO not empty
+#define FS_DIN_HEMPTY 0x2000 // D13 - DIN FIFO not half empty
+#define FS_DIN_FULL 0x4000 // D14 - DIN FIFO not full
+
+// Timer Status Word Bits (GetTimerStatus)
+#define TS_PCLK_GATE 0x0001
+// D0 - Pacer Clock Gate [0 - gated, 1 - enabled]
+#define TS_BCLK_GATE 0x0002
+// D1 - Burst Clock Gate [0 - disabled, 1 - running]
+#define TS_DCNT_GATE 0x0004
+// D2 - Pacer Clock Delayed Start Trigger [0 - delay over, 1 - delay in
+// progress]
+#define TS_ACNT_GATE 0x0008
+// D3 - Pacer Clock About Trigger [0 - completed, 1 - in progress]
+#define TS_PCLK_RUN 0x0010
+// D4 - Pacer Clock Shutdown Flag [0 - Pacer Clock cannot be start
+// triggered only by Software Pacer Start Command, 1 - Pacer Clock can
+// be start triggered]
+
+
+// External Trigger polarity select
+// External Interrupt polarity select
+#define POL_POSITIVE 0x0 // positive edge
+#define POL_NEGATIVE 0x1 // negative edge
+
+// User Output Signal select (SetUout0Source, SetUout1Source)
+#define UOUT_ADC 0x0 // A/D Conversion Signal
+#define UOUT_DAC1 0x1 // D/A1 Update
+#define UOUT_DAC2 0x2 // D/A2 Update
+#define UOUT_SOFTWARE 0x3 // Software Programmable
+
+// Pacer clock select (SetPacerSource)
+#define PCLK_INTERNAL 1 // Internal Pacer Clock
+#define PCLK_EXTERNAL 0 // External Pacer Clock
+
+// A/D Sample Counter Sources (SetAdcntSource, SetupSampleCounter)
+#define ADC_SCNT_CGT_RESET 0x0 // needs restart with StartPacer
+#define ADC_SCNT_FIFO_WRITE 0x1
+
+// A/D Conversion Signal Select (for SetConversionSelect)
+#define ADC_START_SOFTWARE 0x0 // Software A/D Start
+#define ADC_START_PCLK 0x1 // Pacer Clock (Ext. Int. see Func.509)
+#define ADC_START_BCLK 0x2 // Burst Clock
+#define ADC_START_DIGITAL_IT 0x3 // Digital Interrupt
+#define ADC_START_DAC1_MARKER1 0x4 // D/A 1 Data Marker 1
+#define ADC_START_DAC2_MARKER1 0x5 // D/A 2 Data Marker 1
+#define ADC_START_SBUS0 0x6 // SyncBus 0
+#define ADC_START_SBUS1 0x7 // SyncBus 1
+#define ADC_START_SBUS2 0x8 // SyncBus 2
+
+// Burst Clock start trigger select (SetBurstStart)
+#define BCLK_START_SOFTWARE 0x0 // Software A/D Start (StartBurst)
+#define BCLK_START_PCLK 0x1 // Pacer Clock
+#define BCLK_START_ETRIG 0x2 // External Trigger
+#define BCLK_START_DIGITAL_IT 0x3 // Digital Interrupt
+#define BCLK_START_SBUS0 0x4 // SyncBus 0
+#define BCLK_START_SBUS1 0x5 // SyncBus 1
+#define BCLK_START_SBUS2 0x6 // SyncBus 2
+
+// Pacer Clock start trigger select (SetPacerStart)
+#define PCLK_START_SOFTWARE 0x0 // Software Pacer Start (StartPacer)
+#define PCLK_START_ETRIG 0x1 // External trigger
+#define PCLK_START_DIGITAL_IT 0x2 // Digital interrupt
+#define PCLK_START_UTC2 0x3 // User TC 2 out
+#define PCLK_START_SBUS0 0x4 // SyncBus 0
+#define PCLK_START_SBUS1 0x5 // SyncBus 1
+#define PCLK_START_SBUS2 0x6 // SyncBus 2
+#define PCLK_START_D_SOFTWARE 0x8 // Delayed Software Pacer Start
+#define PCLK_START_D_ETRIG 0x9 // Delayed external trigger
+#define PCLK_START_D_DIGITAL_IT 0xA // Delayed digital interrupt
+#define PCLK_START_D_UTC2 0xB // Delayed User TC 2 out
+#define PCLK_START_D_SBUS0 0xC // Delayed SyncBus 0
+#define PCLK_START_D_SBUS1 0xD // Delayed SyncBus 1
+#define PCLK_START_D_SBUS2 0xE // Delayed SyncBus 2
+#define PCLK_START_ETRIG_GATED 0xF // External Trigger Gated controlled mode
+
+// Pacer Clock Stop Trigger select (SetPacerStop)
+#define PCLK_STOP_SOFTWARE 0x0 // Software Pacer Stop (StopPacer)
+#define PCLK_STOP_ETRIG 0x1 // External Trigger
+#define PCLK_STOP_DIGITAL_IT 0x2 // Digital Interrupt
+#define PCLK_STOP_ACNT 0x3 // About Counter
+#define PCLK_STOP_UTC2 0x4 // User TC2 out
+#define PCLK_STOP_SBUS0 0x5 // SyncBus 0
+#define PCLK_STOP_SBUS1 0x6 // SyncBus 1
+#define PCLK_STOP_SBUS2 0x7 // SyncBus 2
+#define PCLK_STOP_A_SOFTWARE 0x8 // About Software Pacer Stop
+#define PCLK_STOP_A_ETRIG 0x9 // About External Trigger
+#define PCLK_STOP_A_DIGITAL_IT 0xA // About Digital Interrupt
+#define PCLK_STOP_A_UTC2 0xC // About User TC2 out
+#define PCLK_STOP_A_SBUS0 0xD // About SyncBus 0
+#define PCLK_STOP_A_SBUS1 0xE // About SyncBus 1
+#define PCLK_STOP_A_SBUS2 0xF // About SyncBus 2
+
+// About Counter Stop Enable
+#define ACNT_STOP 0x0 // stop enable
+#define ACNT_NO_STOP 0x1 // stop disabled
+
+// DAC update source (SetDAC1Start & SetDAC2Start)
+#define DAC_START_SOFTWARE 0x0 // Software Update
+#define DAC_START_CGT 0x1 // CGT controlled Update
+#define DAC_START_DAC_CLK 0x2 // D/A Clock
+#define DAC_START_EPCLK 0x3 // External Pacer Clock
+#define DAC_START_SBUS0 0x4 // SyncBus 0
+#define DAC_START_SBUS1 0x5 // SyncBus 1
+#define DAC_START_SBUS2 0x6 // SyncBus 2
+
+// DAC Cycle Mode (SetDAC1Cycle, SetDAC2Cycle, SetupDAC)
+#define DAC_CYCLE_SINGLE 0x0 // not cycle
+#define DAC_CYCLE_MULTI 0x1 // cycle
+
+// 8254 Operation Modes (Set8254Mode, SetupTimerCounter)
+#define M8254_EVENT_COUNTER 0 // Event Counter
+#define M8254_HW_ONE_SHOT 1 // Hardware-Retriggerable One-Shot
+#define M8254_RATE_GENERATOR 2 // Rate Generator
+#define M8254_SQUARE_WAVE 3 // Square Wave Mode
+#define M8254_SW_STROBE 4 // Software Triggered Strobe
+#define M8254_HW_STROBE 5 // Hardware Triggered Strobe (Retriggerable)
+
+// User Timer/Counter 0 Clock Select (SetUtc0Clock)
+#define CUTC0_8MHZ 0x0 // 8MHz
+#define CUTC0_EXT_TC_CLOCK1 0x1 // Ext. TC Clock 1
+#define CUTC0_EXT_TC_CLOCK2 0x2 // Ext. TC Clock 2
+#define CUTC0_EXT_PCLK 0x3 // Ext. Pacer Clock
+
+// User Timer/Counter 1 Clock Select (SetUtc1Clock)
+#define CUTC1_8MHZ 0x0 // 8MHz
+#define CUTC1_EXT_TC_CLOCK1 0x1 // Ext. TC Clock 1
+#define CUTC1_EXT_TC_CLOCK2 0x2 // Ext. TC Clock 2
+#define CUTC1_EXT_PCLK 0x3 // Ext. Pacer Clock
+#define CUTC1_UTC0_OUT 0x4 // User Timer/Counter 0 out
+#define CUTC1_DIN_SIGNAL 0x5 // High-Speed Digital Input Sampling signal
+
+// User Timer/Counter 2 Clock Select (SetUtc2Clock)
+#define CUTC2_8MHZ 0x0 // 8MHz
+#define CUTC2_EXT_TC_CLOCK1 0x1 // Ext. TC Clock 1
+#define CUTC2_EXT_TC_CLOCK2 0x2 // Ext. TC Clock 2
+#define CUTC2_EXT_PCLK 0x3 // Ext. Pacer Clock
+#define CUTC2_UTC1_OUT 0x4 // User Timer/Counter 1 out
+
+// User Timer/Counter 0 Gate Select (SetUtc0Gate)
+#define GUTC0_NOT_GATED 0x0 // Not gated
+#define GUTC0_GATED 0x1 // Gated
+#define GUTC0_EXT_TC_GATE1 0x2 // Ext. TC Gate 1
+#define GUTC0_EXT_TC_GATE2 0x3 // Ext. TC Gate 2
+
+// User Timer/Counter 1 Gate Select (SetUtc1Gate)
+#define GUTC1_NOT_GATED 0x0 // Not gated
+#define GUTC1_GATED 0x1 // Gated
+#define GUTC1_EXT_TC_GATE1 0x2 // Ext. TC Gate 1
+#define GUTC1_EXT_TC_GATE2 0x3 // Ext. TC Gate 2
+#define GUTC1_UTC0_OUT 0x4 // User Timer/Counter 0 out
+
+// User Timer/Counter 2 Gate Select (SetUtc2Gate)
+#define GUTC2_NOT_GATED 0x0 // Not gated
+#define GUTC2_GATED 0x1 // Gated
+#define GUTC2_EXT_TC_GATE1 0x2 // Ext. TC Gate 1
+#define GUTC2_EXT_TC_GATE2 0x3 // Ext. TC Gate 2
+#define GUTC2_UTC1_OUT 0x4 // User Timer/Counter 1 out
+
+// Interrupt Source Masks (SetITMask, ClearITMask, GetITStatus)
+#define IRQM_ADC_FIFO_WRITE 0x0001 // ADC FIFO Write
+#define IRQM_CGT_RESET 0x0002 // Reset CGT
+#define IRQM_CGT_PAUSE 0x0008 // Pause CGT
+#define IRQM_ADC_ABOUT_CNT 0x0010 // About Counter out
+#define IRQM_ADC_DELAY_CNT 0x0020 // Delay Counter out
+#define IRQM_ADC_SAMPLE_CNT 0x0040 // ADC Sample Counter
+#define IRQM_DAC1_UCNT 0x0080 // DAC1 Update Counter
+#define IRQM_DAC2_UCNT 0x0100 // DAC2 Update Counter
+#define IRQM_UTC1 0x0200 // User TC1 out
+#define IRQM_UTC1_INV 0x0400 // User TC1 out, inverted
+#define IRQM_UTC2 0x0800 // User TC2 out
+#define IRQM_DIGITAL_IT 0x1000 // Digital Interrupt
+#define IRQM_EXTERNAL_IT 0x2000 // External Interrupt
+#define IRQM_ETRIG_RISING 0x4000 // External Trigger rising-edge
+#define IRQM_ETRIG_FALLING 0x8000 // External Trigger falling-edge
+
+// DMA Request Sources (LAS0)
+#define DMAS_DISABLED 0x0 // DMA Disabled
+#define DMAS_ADC_SCNT 0x1 // ADC Sample Counter
+#define DMAS_DAC1_UCNT 0x2 // D/A1 Update Counter
+#define DMAS_DAC2_UCNT 0x3 // D/A2 Update Counter
+#define DMAS_UTC1 0x4 // User TC1 out
+#define DMAS_ADFIFO_HALF_FULL 0x8 // A/D FIFO half full
+#define DMAS_DAC1_FIFO_HALF_EMPTY 0x9 // D/A1 FIFO half empty
+#define DMAS_DAC2_FIFO_HALF_EMPTY 0xA // D/A2 FIFO half empty
+
+// PLX Interrupt Control/Status enable masks (LCFG)
+#define PIRQE_PCI 0x00000100 //PCI Interrupt Enable (defaulton)
+#define PIRQE_LINT 0x00000800 //Local Interrupt Enable (bit 11)
+#define PIRQE_DMA0 0x00040000 //DMA Channel 0 Interrupt Enable
+#define PIRQE_DMA1 0x00080000 //DMA Channel 1 Interrupt Enable
+// PLX Interrupt Control/Status status masks (LCFG)
+#define PIRQS_LINT 0x00008000 //Local Interrupt Active (bit 15)
+#define PIRQS_DMA0 0x00200000 //DMA Channel 0 Interrupt Active
+#define PIRQS_DMA1 0x00400000 //DMA Channel 1 Interrupt Active
+
+// DMA Mode Register (LCFG)
+#define DMA_8BIT 0x0000 // 8 bit wide transfer
+#define DMA_16BIT 0x0001 // 16 bit wide transfer
+#define DMA_32BIT 0x0003 // 32 bit wide transfer
+#define DMA_RDYEN 0x0040 // READY enable
+#define DMA_BTERM 0x0080 // BTERM enable
+#define DMA_LBURST 0x0100 // Local Burst enable
+#define DMA_CHAIN 0x0200 // Chain mode DMA
+#define DMA_ITEN 0x0400 // DMA done IT enable
+#define DMA_LA_CONST 0x0800 // Local Address constant
+#define DMA_DEMAND 0x1000 // Demand mode DMA
+#define DMA_WRANDI 0x2000 // Write and Invalidate mode DMA
+#define DMA_CLRCNT 0x010000 // Clear transfer count
+#define DMA_IT_PCI 0x020000 // DMA IT rerouted to PCI IT
+
+// DMA Command/Status bits (LCFG)
+#define DMA_ENABLED 0x01 // DMA Channel 0 enabled
+#define DMA_START 0x02 // DMA Channel 0 started
+#define DMA_ABORT 0x04 // Abort DMA Channel 0 transfer
+#define DMA_CLEAR_IT 0x08 // Clear DMA Channel 0 IT
+#define DMA_DONE 0x10 // DMA Channel 0 transfer done
+
+// DMA Transfer Direction
+#define DMAD_FROMCARD 1 // DMA transfer from card to memory
+#define DMAD_TOCARD 0 // DMA transfer from memory to card
+
+// Chained DMA Transfer Direction
+#define DMA_CHAINED_READ 8 // DMA transfer from memory to card
+#define DMA_CHAINED_WRITE 0 // DMA transfer from card to memory
+
+// DMA Local Addresses (LAS1 offset)
+#define DMALADDR_ADC 0x0000 // A/D FIFO
+#define DMALADDR_HDIN 0x0004 // High Speed Digital Input FIFO
+#define DMALADDR_DAC1 0x0008 // D/A1 FIFO
+#define DMALADDR_DAC2 0x000C // D/A2 FIFO
+
+// Port 0 compare modes (SetDIO0CompareMode)
+#define DIO_MODE_EVENT 0 // Event Mode
+#define DIO_MODE_MATCH 1 // Match Mode
+
+// Digital Table Enable (Port 1 disable)
+#define DTBL_DISABLE 0 // Enable Digital Table
+#define DTBL_ENABLE 1 // Disable Digital Table
+
+// Sampling Signal for High Speed Digital Input (SetHdinStart)
+#define HDIN_SOFTWARE 0x0 // Software Trigger
+#define HDIN_ADC 0x1 // A/D Conversion Signal
+#define HDIN_UTC0 0x2 // User TC out 0
+#define HDIN_UTC1 0x3 // User TC out 1
+#define HDIN_UTC2 0x4 // User TC out 2
+#define HDIN_EPCLK 0x5 // External Pacer Clock
+#define HDIN_ETRG 0x6 // External Trigger
+
+// Channel Gain Table / Channel Gain Latch
+#define CSC_LATCH 0 // Channel Gain Latch mode
+#define CSC_CGT 1 // Channel Gain Table mode
+
+// Channel Gain Table Pause Enable
+#define CGT_PAUSE_DISABLE 0 // Channel Gain Table Pause Disable
+#define CGT_PAUSE_ENABLE 1 // Channel Gain Table Pause Enable
+
+// DAC output type/range (p63)
+#define AOUT_UNIP5 0 // 0..+5 Volt
+#define AOUT_UNIP10 1 // 0..+10 Volt
+#define AOUT_BIP5 2 // -5..+5 Volt
+#define AOUT_BIP10 3 // -10..+10 Volt
+
+// Ghannel Gain Table field definitions (p61)
+// Gain
+#define GAIN1 0
+#define GAIN2 1
+#define GAIN4 2
+#define GAIN8 3
+#define GAIN16 4
+#define GAIN32 5
+#define GAIN64 6
+#define GAIN128 7
+
+// Input range/polarity
+#define AIN_BIP5 0 // -5..+5 Volt
+#define AIN_BIP10 1 // -10..+10 Volt
+#define AIN_UNIP10 2 // 0..+10 Volt
+
+// non referenced single ended select bit
+#define NRSE_AGND 0 // AGND referenced SE input
+#define NRSE_AINS 1 // AIN SENSE referenced SE input
+
+// single ended vs differential
+#define GND_SE 0 // Single-Ended
+#define GND_DIFF 1 // Differential
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