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path: root/drivers/comedi/drivers/cb_pcimdas.c
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Diffstat (limited to 'drivers/comedi/drivers/cb_pcimdas.c')
-rw-r--r--drivers/comedi/drivers/cb_pcimdas.c475
1 files changed, 475 insertions, 0 deletions
diff --git a/drivers/comedi/drivers/cb_pcimdas.c b/drivers/comedi/drivers/cb_pcimdas.c
new file mode 100644
index 000000000000..2292f69da4f4
--- /dev/null
+++ b/drivers/comedi/drivers/cb_pcimdas.c
@@ -0,0 +1,475 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * comedi/drivers/cb_pcimdas.c
+ * Comedi driver for Computer Boards PCIM-DAS1602/16 and PCIe-DAS1602/16
+ *
+ * COMEDI - Linux Control and Measurement Device Interface
+ * Copyright (C) 2000 David A. Schleef <ds@schleef.org>
+ */
+
+/*
+ * Driver: cb_pcimdas
+ * Description: Measurement Computing PCI Migration series boards
+ * Devices: [ComputerBoards] PCIM-DAS1602/16 (cb_pcimdas), PCIe-DAS1602/16
+ * Author: Richard Bytheway
+ * Updated: Mon, 13 Oct 2014 11:57:39 +0000
+ * Status: experimental
+ *
+ * Written to support the PCIM-DAS1602/16 and PCIe-DAS1602/16.
+ *
+ * Configuration Options:
+ * none
+ *
+ * Manual configuration of PCI(e) cards is not supported; they are configured
+ * automatically.
+ *
+ * Developed from cb_pcidas and skel by Richard Bytheway (mocelet@sucs.org).
+ * Only supports DIO, AO and simple AI in it's present form.
+ * No interrupts, multi channel or FIFO AI,
+ * although the card looks like it could support this.
+ *
+ * https://www.mccdaq.com/PDFs/Manuals/pcim-das1602-16.pdf
+ * https://www.mccdaq.com/PDFs/Manuals/pcie-das1602-16.pdf
+ */
+
+#include <linux/module.h>
+#include <linux/interrupt.h>
+
+#include "../comedi_pci.h"
+
+#include "comedi_8254.h"
+#include "plx9052.h"
+#include "8255.h"
+
+/*
+ * PCI Bar 1 Register map
+ * see plx9052.h for register and bit defines
+ */
+
+/*
+ * PCI Bar 2 Register map (devpriv->daqio)
+ */
+#define PCIMDAS_AI_REG 0x00
+#define PCIMDAS_AI_SOFTTRIG_REG 0x00
+#define PCIMDAS_AO_REG(x) (0x02 + ((x) * 2))
+
+/*
+ * PCI Bar 3 Register map (devpriv->BADR3)
+ */
+#define PCIMDAS_MUX_REG 0x00
+#define PCIMDAS_MUX(_lo, _hi) ((_lo) | ((_hi) << 4))
+#define PCIMDAS_DI_DO_REG 0x01
+#define PCIMDAS_STATUS_REG 0x02
+#define PCIMDAS_STATUS_EOC BIT(7)
+#define PCIMDAS_STATUS_UB BIT(6)
+#define PCIMDAS_STATUS_MUX BIT(5)
+#define PCIMDAS_STATUS_CLK BIT(4)
+#define PCIMDAS_STATUS_TO_CURR_MUX(x) ((x) & 0xf)
+#define PCIMDAS_CONV_STATUS_REG 0x03
+#define PCIMDAS_CONV_STATUS_EOC BIT(7)
+#define PCIMDAS_CONV_STATUS_EOB BIT(6)
+#define PCIMDAS_CONV_STATUS_EOA BIT(5)
+#define PCIMDAS_CONV_STATUS_FNE BIT(4)
+#define PCIMDAS_CONV_STATUS_FHF BIT(3)
+#define PCIMDAS_CONV_STATUS_OVERRUN BIT(2)
+#define PCIMDAS_IRQ_REG 0x04
+#define PCIMDAS_IRQ_INTE BIT(7)
+#define PCIMDAS_IRQ_INT BIT(6)
+#define PCIMDAS_IRQ_OVERRUN BIT(4)
+#define PCIMDAS_IRQ_EOA BIT(3)
+#define PCIMDAS_IRQ_EOA_INT_SEL BIT(2)
+#define PCIMDAS_IRQ_INTSEL(x) ((x) << 0)
+#define PCIMDAS_IRQ_INTSEL_EOC PCIMDAS_IRQ_INTSEL(0)
+#define PCIMDAS_IRQ_INTSEL_FNE PCIMDAS_IRQ_INTSEL(1)
+#define PCIMDAS_IRQ_INTSEL_EOB PCIMDAS_IRQ_INTSEL(2)
+#define PCIMDAS_IRQ_INTSEL_FHF_EOA PCIMDAS_IRQ_INTSEL(3)
+#define PCIMDAS_PACER_REG 0x05
+#define PCIMDAS_PACER_GATE_STATUS BIT(6)
+#define PCIMDAS_PACER_GATE_POL BIT(5)
+#define PCIMDAS_PACER_GATE_LATCH BIT(4)
+#define PCIMDAS_PACER_GATE_EN BIT(3)
+#define PCIMDAS_PACER_EXT_PACER_POL BIT(2)
+#define PCIMDAS_PACER_SRC(x) ((x) << 0)
+#define PCIMDAS_PACER_SRC_POLLED PCIMDAS_PACER_SRC(0)
+#define PCIMDAS_PACER_SRC_EXT PCIMDAS_PACER_SRC(2)
+#define PCIMDAS_PACER_SRC_INT PCIMDAS_PACER_SRC(3)
+#define PCIMDAS_PACER_SRC_MASK (3 << 0)
+#define PCIMDAS_BURST_REG 0x06
+#define PCIMDAS_BURST_BME BIT(1)
+#define PCIMDAS_BURST_CONV_EN BIT(0)
+#define PCIMDAS_GAIN_REG 0x07
+#define PCIMDAS_8254_BASE 0x08
+#define PCIMDAS_USER_CNTR_REG 0x0c
+#define PCIMDAS_USER_CNTR_CTR1_CLK_SEL BIT(0)
+#define PCIMDAS_RESIDUE_MSB_REG 0x0d
+#define PCIMDAS_RESIDUE_LSB_REG 0x0e
+
+/*
+ * PCI Bar 4 Register map (dev->iobase)
+ */
+#define PCIMDAS_8255_BASE 0x00
+
+static const struct comedi_lrange cb_pcimdas_ai_bip_range = {
+ 4, {
+ BIP_RANGE(10),
+ BIP_RANGE(5),
+ BIP_RANGE(2.5),
+ BIP_RANGE(1.25)
+ }
+};
+
+static const struct comedi_lrange cb_pcimdas_ai_uni_range = {
+ 4, {
+ UNI_RANGE(10),
+ UNI_RANGE(5),
+ UNI_RANGE(2.5),
+ UNI_RANGE(1.25)
+ }
+};
+
+/*
+ * The Analog Output range is not programmable. The DAC ranges are
+ * jumper-settable on the board. The settings are not software-readable.
+ */
+static const struct comedi_lrange cb_pcimdas_ao_range = {
+ 6, {
+ BIP_RANGE(10),
+ BIP_RANGE(5),
+ UNI_RANGE(10),
+ UNI_RANGE(5),
+ RANGE_ext(-1, 1),
+ RANGE_ext(0, 1)
+ }
+};
+
+/*
+ * this structure is for data unique to this hardware driver. If
+ * several hardware drivers keep similar information in this structure,
+ * feel free to suggest moving the variable to the struct comedi_device
+ * struct.
+ */
+struct cb_pcimdas_private {
+ /* base addresses */
+ unsigned long daqio;
+ unsigned long BADR3;
+};
+
+static int cb_pcimdas_ai_eoc(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn,
+ unsigned long context)
+{
+ struct cb_pcimdas_private *devpriv = dev->private;
+ unsigned int status;
+
+ status = inb(devpriv->BADR3 + PCIMDAS_STATUS_REG);
+ if ((status & PCIMDAS_STATUS_EOC) == 0)
+ return 0;
+ return -EBUSY;
+}
+
+static int cb_pcimdas_ai_insn_read(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn,
+ unsigned int *data)
+{
+ struct cb_pcimdas_private *devpriv = dev->private;
+ unsigned int chan = CR_CHAN(insn->chanspec);
+ unsigned int range = CR_RANGE(insn->chanspec);
+ int n;
+ unsigned int d;
+ int ret;
+
+ /* only support sw initiated reads from a single channel */
+
+ /* configure for sw initiated read */
+ d = inb(devpriv->BADR3 + PCIMDAS_PACER_REG);
+ if ((d & PCIMDAS_PACER_SRC_MASK) != PCIMDAS_PACER_SRC_POLLED) {
+ d &= ~PCIMDAS_PACER_SRC_MASK;
+ d |= PCIMDAS_PACER_SRC_POLLED;
+ outb(d, devpriv->BADR3 + PCIMDAS_PACER_REG);
+ }
+
+ /* set bursting off, conversions on */
+ outb(PCIMDAS_BURST_CONV_EN, devpriv->BADR3 + PCIMDAS_BURST_REG);
+
+ /* set range */
+ outb(range, devpriv->BADR3 + PCIMDAS_GAIN_REG);
+
+ /* set mux for single channel scan */
+ outb(PCIMDAS_MUX(chan, chan), devpriv->BADR3 + PCIMDAS_MUX_REG);
+
+ /* convert n samples */
+ for (n = 0; n < insn->n; n++) {
+ /* trigger conversion */
+ outw(0, devpriv->daqio + PCIMDAS_AI_SOFTTRIG_REG);
+
+ /* wait for conversion to end */
+ ret = comedi_timeout(dev, s, insn, cb_pcimdas_ai_eoc, 0);
+ if (ret)
+ return ret;
+
+ /* read data */
+ data[n] = inw(devpriv->daqio + PCIMDAS_AI_REG);
+ }
+
+ /* return the number of samples read/written */
+ return n;
+}
+
+static int cb_pcimdas_ao_insn_write(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn,
+ unsigned int *data)
+{
+ struct cb_pcimdas_private *devpriv = dev->private;
+ unsigned int chan = CR_CHAN(insn->chanspec);
+ unsigned int val = s->readback[chan];
+ int i;
+
+ for (i = 0; i < insn->n; i++) {
+ val = data[i];
+ outw(val, devpriv->daqio + PCIMDAS_AO_REG(chan));
+ }
+ s->readback[chan] = val;
+
+ return insn->n;
+}
+
+static int cb_pcimdas_di_insn_bits(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn,
+ unsigned int *data)
+{
+ struct cb_pcimdas_private *devpriv = dev->private;
+ unsigned int val;
+
+ val = inb(devpriv->BADR3 + PCIMDAS_DI_DO_REG);
+
+ data[1] = val & 0x0f;
+
+ return insn->n;
+}
+
+static int cb_pcimdas_do_insn_bits(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn,
+ unsigned int *data)
+{
+ struct cb_pcimdas_private *devpriv = dev->private;
+
+ if (comedi_dio_update_state(s, data))
+ outb(s->state, devpriv->BADR3 + PCIMDAS_DI_DO_REG);
+
+ data[1] = s->state;
+
+ return insn->n;
+}
+
+static int cb_pcimdas_counter_insn_config(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn,
+ unsigned int *data)
+{
+ struct cb_pcimdas_private *devpriv = dev->private;
+ unsigned int ctrl;
+
+ switch (data[0]) {
+ case INSN_CONFIG_SET_CLOCK_SRC:
+ switch (data[1]) {
+ case 0: /* internal 100 kHz clock */
+ ctrl = PCIMDAS_USER_CNTR_CTR1_CLK_SEL;
+ break;
+ case 1: /* external clk on pin 21 */
+ ctrl = 0;
+ break;
+ default:
+ return -EINVAL;
+ }
+ outb(ctrl, devpriv->BADR3 + PCIMDAS_USER_CNTR_REG);
+ break;
+ case INSN_CONFIG_GET_CLOCK_SRC:
+ ctrl = inb(devpriv->BADR3 + PCIMDAS_USER_CNTR_REG);
+ if (ctrl & PCIMDAS_USER_CNTR_CTR1_CLK_SEL) {
+ data[1] = 0;
+ data[2] = I8254_OSC_BASE_100KHZ;
+ } else {
+ data[1] = 1;
+ data[2] = 0;
+ }
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return insn->n;
+}
+
+static unsigned int cb_pcimdas_pacer_clk(struct comedi_device *dev)
+{
+ struct cb_pcimdas_private *devpriv = dev->private;
+ unsigned int status;
+
+ /* The Pacer Clock jumper selects a 10 MHz or 1 MHz clock */
+ status = inb(devpriv->BADR3 + PCIMDAS_STATUS_REG);
+ if (status & PCIMDAS_STATUS_CLK)
+ return I8254_OSC_BASE_10MHZ;
+ return I8254_OSC_BASE_1MHZ;
+}
+
+static bool cb_pcimdas_is_ai_se(struct comedi_device *dev)
+{
+ struct cb_pcimdas_private *devpriv = dev->private;
+ unsigned int status;
+
+ /*
+ * The number of Analog Input channels is set with the
+ * Analog Input Mode Switch on the board. The board can
+ * have 16 single-ended or 8 differential channels.
+ */
+ status = inb(devpriv->BADR3 + PCIMDAS_STATUS_REG);
+ return status & PCIMDAS_STATUS_MUX;
+}
+
+static bool cb_pcimdas_is_ai_uni(struct comedi_device *dev)
+{
+ struct cb_pcimdas_private *devpriv = dev->private;
+ unsigned int status;
+
+ /*
+ * The Analog Input range polarity is set with the
+ * Analog Input Polarity Switch on the board. The
+ * inputs can be set to Unipolar or Bipolar ranges.
+ */
+ status = inb(devpriv->BADR3 + PCIMDAS_STATUS_REG);
+ return status & PCIMDAS_STATUS_UB;
+}
+
+static int cb_pcimdas_auto_attach(struct comedi_device *dev,
+ unsigned long context_unused)
+{
+ struct pci_dev *pcidev = comedi_to_pci_dev(dev);
+ struct cb_pcimdas_private *devpriv;
+ struct comedi_subdevice *s;
+ int ret;
+
+ devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
+ if (!devpriv)
+ return -ENOMEM;
+
+ ret = comedi_pci_enable(dev);
+ if (ret)
+ return ret;
+
+ devpriv->daqio = pci_resource_start(pcidev, 2);
+ devpriv->BADR3 = pci_resource_start(pcidev, 3);
+ dev->iobase = pci_resource_start(pcidev, 4);
+
+ dev->pacer = comedi_8254_init(devpriv->BADR3 + PCIMDAS_8254_BASE,
+ cb_pcimdas_pacer_clk(dev),
+ I8254_IO8, 0);
+ if (!dev->pacer)
+ return -ENOMEM;
+
+ ret = comedi_alloc_subdevices(dev, 6);
+ if (ret)
+ return ret;
+
+ /* Analog Input subdevice */
+ s = &dev->subdevices[0];
+ s->type = COMEDI_SUBD_AI;
+ s->subdev_flags = SDF_READABLE;
+ if (cb_pcimdas_is_ai_se(dev)) {
+ s->subdev_flags |= SDF_GROUND;
+ s->n_chan = 16;
+ } else {
+ s->subdev_flags |= SDF_DIFF;
+ s->n_chan = 8;
+ }
+ s->maxdata = 0xffff;
+ s->range_table = cb_pcimdas_is_ai_uni(dev) ? &cb_pcimdas_ai_uni_range
+ : &cb_pcimdas_ai_bip_range;
+ s->insn_read = cb_pcimdas_ai_insn_read;
+
+ /* Analog Output subdevice */
+ s = &dev->subdevices[1];
+ s->type = COMEDI_SUBD_AO;
+ s->subdev_flags = SDF_WRITABLE;
+ s->n_chan = 2;
+ s->maxdata = 0xfff;
+ s->range_table = &cb_pcimdas_ao_range;
+ s->insn_write = cb_pcimdas_ao_insn_write;
+
+ ret = comedi_alloc_subdev_readback(s);
+ if (ret)
+ return ret;
+
+ /* Digital I/O subdevice */
+ s = &dev->subdevices[2];
+ ret = subdev_8255_init(dev, s, NULL, PCIMDAS_8255_BASE);
+ if (ret)
+ return ret;
+
+ /* Digital Input subdevice (main connector) */
+ s = &dev->subdevices[3];
+ s->type = COMEDI_SUBD_DI;
+ s->subdev_flags = SDF_READABLE;
+ s->n_chan = 4;
+ s->maxdata = 1;
+ s->range_table = &range_digital;
+ s->insn_bits = cb_pcimdas_di_insn_bits;
+
+ /* Digital Output subdevice (main connector) */
+ s = &dev->subdevices[4];
+ s->type = COMEDI_SUBD_DO;
+ s->subdev_flags = SDF_WRITABLE;
+ s->n_chan = 4;
+ s->maxdata = 1;
+ s->range_table = &range_digital;
+ s->insn_bits = cb_pcimdas_do_insn_bits;
+
+ /* Counter subdevice (8254) */
+ s = &dev->subdevices[5];
+ comedi_8254_subdevice_init(s, dev->pacer);
+
+ dev->pacer->insn_config = cb_pcimdas_counter_insn_config;
+
+ /* counters 1 and 2 are used internally for the pacer */
+ comedi_8254_set_busy(dev->pacer, 1, true);
+ comedi_8254_set_busy(dev->pacer, 2, true);
+
+ return 0;
+}
+
+static struct comedi_driver cb_pcimdas_driver = {
+ .driver_name = "cb_pcimdas",
+ .module = THIS_MODULE,
+ .auto_attach = cb_pcimdas_auto_attach,
+ .detach = comedi_pci_detach,
+};
+
+static int cb_pcimdas_pci_probe(struct pci_dev *dev,
+ const struct pci_device_id *id)
+{
+ return comedi_pci_auto_config(dev, &cb_pcimdas_driver,
+ id->driver_data);
+}
+
+static const struct pci_device_id cb_pcimdas_pci_table[] = {
+ { PCI_DEVICE(PCI_VENDOR_ID_CB, 0x0056) }, /* PCIM-DAS1602/16 */
+ { PCI_DEVICE(PCI_VENDOR_ID_CB, 0x0115) }, /* PCIe-DAS1602/16 */
+ { 0 }
+};
+MODULE_DEVICE_TABLE(pci, cb_pcimdas_pci_table);
+
+static struct pci_driver cb_pcimdas_pci_driver = {
+ .name = "cb_pcimdas",
+ .id_table = cb_pcimdas_pci_table,
+ .probe = cb_pcimdas_pci_probe,
+ .remove = comedi_pci_auto_unconfig,
+};
+module_comedi_pci_driver(cb_pcimdas_driver, cb_pcimdas_pci_driver);
+
+MODULE_AUTHOR("Comedi https://www.comedi.org");
+MODULE_DESCRIPTION("Comedi driver for PCIM-DAS1602/16 and PCIe-DAS1602/16");
+MODULE_LICENSE("GPL");
generated by cgit (git 2.34.1) at 2025-09-26 17:16:30 +0000