282 lines
6.5 KiB
C
282 lines
6.5 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Comedi driver for NI 670x devices
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*
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* COMEDI - Linux Control and Measurement Device Interface
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* Copyright (C) 1997-2001 David A. Schleef <ds@schleef.org>
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*/
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/*
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* Driver: ni_670x
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* Description: National Instruments 670x
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* Author: Bart Joris <bjoris@advalvas.be>
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* Updated: Wed, 11 Dec 2002 18:25:35 -0800
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* Devices: [National Instruments] PCI-6703 (ni_670x), PCI-6704
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* Status: unknown
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*
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* Commands are not supported.
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*
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* Manuals:
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* 322110a.pdf PCI/PXI-6704 User Manual
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* 322110b.pdf PCI/PXI-6703/6704 User Manual
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*/
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#include <linux/module.h>
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#include <linux/interrupt.h>
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#include <linux/slab.h>
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#include <linux/comedi/comedi_pci.h>
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#define AO_VALUE_OFFSET 0x00
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#define AO_CHAN_OFFSET 0x0c
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#define AO_STATUS_OFFSET 0x10
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#define AO_CONTROL_OFFSET 0x10
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#define DIO_PORT0_DIR_OFFSET 0x20
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#define DIO_PORT0_DATA_OFFSET 0x24
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#define DIO_PORT1_DIR_OFFSET 0x28
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#define DIO_PORT1_DATA_OFFSET 0x2c
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#define MISC_STATUS_OFFSET 0x14
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#define MISC_CONTROL_OFFSET 0x14
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enum ni_670x_boardid {
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BOARD_PCI6703,
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BOARD_PXI6704,
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BOARD_PCI6704,
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};
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struct ni_670x_board {
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const char *name;
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unsigned short ao_chans;
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};
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static const struct ni_670x_board ni_670x_boards[] = {
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[BOARD_PCI6703] = {
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.name = "PCI-6703",
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.ao_chans = 16,
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},
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[BOARD_PXI6704] = {
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.name = "PXI-6704",
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.ao_chans = 32,
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},
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[BOARD_PCI6704] = {
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.name = "PCI-6704",
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.ao_chans = 32,
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},
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};
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struct ni_670x_private {
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int boardtype;
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int dio;
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};
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static int ni_670x_ao_insn_write(struct comedi_device *dev,
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struct comedi_subdevice *s,
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struct comedi_insn *insn,
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unsigned int *data)
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{
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unsigned int chan = CR_CHAN(insn->chanspec);
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unsigned int val = s->readback[chan];
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int i;
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/*
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* Channel number mapping:
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*
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* NI 6703/ NI 6704 | NI 6704 Only
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* -------------------------------
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* vch(0) : 0 | ich(16) : 1
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* vch(1) : 2 | ich(17) : 3
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* ... | ...
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* vch(15) : 30 | ich(31) : 31
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*/
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for (i = 0; i < insn->n; i++) {
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val = data[i];
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/* First write in channel register which channel to use */
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writel(((chan & 15) << 1) | ((chan & 16) >> 4),
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dev->mmio + AO_CHAN_OFFSET);
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/* write channel value */
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writel(val, dev->mmio + AO_VALUE_OFFSET);
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}
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s->readback[chan] = val;
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return insn->n;
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}
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static int ni_670x_dio_insn_bits(struct comedi_device *dev,
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struct comedi_subdevice *s,
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struct comedi_insn *insn,
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unsigned int *data)
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{
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if (comedi_dio_update_state(s, data))
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writel(s->state, dev->mmio + DIO_PORT0_DATA_OFFSET);
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data[1] = readl(dev->mmio + DIO_PORT0_DATA_OFFSET);
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return insn->n;
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}
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static int ni_670x_dio_insn_config(struct comedi_device *dev,
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struct comedi_subdevice *s,
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struct comedi_insn *insn,
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unsigned int *data)
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{
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int ret;
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ret = comedi_dio_insn_config(dev, s, insn, data, 0);
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if (ret)
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return ret;
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writel(s->io_bits, dev->mmio + DIO_PORT0_DIR_OFFSET);
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return insn->n;
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}
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/* ripped from mite.h and mite_setup2() to avoid mite dependency */
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#define MITE_IODWBSR 0xc0 /* IO Device Window Base Size Register */
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#define WENAB BIT(7) /* window enable */
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static int ni_670x_mite_init(struct pci_dev *pcidev)
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{
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void __iomem *mite_base;
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u32 main_phys_addr;
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/* ioremap the MITE registers (BAR 0) temporarily */
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mite_base = pci_ioremap_bar(pcidev, 0);
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if (!mite_base)
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return -ENOMEM;
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/* set data window to main registers (BAR 1) */
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main_phys_addr = pci_resource_start(pcidev, 1);
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writel(main_phys_addr | WENAB, mite_base + MITE_IODWBSR);
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/* finished with MITE registers */
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iounmap(mite_base);
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return 0;
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}
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static int ni_670x_auto_attach(struct comedi_device *dev,
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unsigned long context)
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{
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struct pci_dev *pcidev = comedi_to_pci_dev(dev);
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const struct ni_670x_board *board = NULL;
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struct ni_670x_private *devpriv;
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struct comedi_subdevice *s;
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int ret;
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int i;
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if (context < ARRAY_SIZE(ni_670x_boards))
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board = &ni_670x_boards[context];
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if (!board)
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return -ENODEV;
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dev->board_ptr = board;
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dev->board_name = board->name;
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ret = comedi_pci_enable(dev);
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if (ret)
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return ret;
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devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
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if (!devpriv)
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return -ENOMEM;
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ret = ni_670x_mite_init(pcidev);
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if (ret)
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return ret;
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dev->mmio = pci_ioremap_bar(pcidev, 1);
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if (!dev->mmio)
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return -ENOMEM;
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ret = comedi_alloc_subdevices(dev, 2);
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if (ret)
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return ret;
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s = &dev->subdevices[0];
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/* analog output subdevice */
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s->type = COMEDI_SUBD_AO;
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s->subdev_flags = SDF_WRITABLE;
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s->n_chan = board->ao_chans;
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s->maxdata = 0xffff;
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if (s->n_chan == 32) {
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const struct comedi_lrange **range_table_list;
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range_table_list = kmalloc_array(32,
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sizeof(struct comedi_lrange *),
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GFP_KERNEL);
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if (!range_table_list)
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return -ENOMEM;
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s->range_table_list = range_table_list;
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for (i = 0; i < 16; i++) {
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range_table_list[i] = &range_bipolar10;
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range_table_list[16 + i] = &range_0_20mA;
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}
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} else {
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s->range_table = &range_bipolar10;
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}
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s->insn_write = ni_670x_ao_insn_write;
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ret = comedi_alloc_subdev_readback(s);
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if (ret)
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return ret;
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s = &dev->subdevices[1];
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/* digital i/o subdevice */
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s->type = COMEDI_SUBD_DIO;
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s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
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s->n_chan = 8;
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s->maxdata = 1;
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s->range_table = &range_digital;
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s->insn_bits = ni_670x_dio_insn_bits;
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s->insn_config = ni_670x_dio_insn_config;
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/* Config of misc registers */
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writel(0x10, dev->mmio + MISC_CONTROL_OFFSET);
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/* Config of ao registers */
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writel(0x00, dev->mmio + AO_CONTROL_OFFSET);
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return 0;
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}
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static void ni_670x_detach(struct comedi_device *dev)
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{
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struct comedi_subdevice *s;
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comedi_pci_detach(dev);
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if (dev->n_subdevices) {
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s = &dev->subdevices[0];
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if (s)
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kfree(s->range_table_list);
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}
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}
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static struct comedi_driver ni_670x_driver = {
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.driver_name = "ni_670x",
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.module = THIS_MODULE,
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.auto_attach = ni_670x_auto_attach,
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.detach = ni_670x_detach,
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};
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static int ni_670x_pci_probe(struct pci_dev *dev,
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const struct pci_device_id *id)
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{
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return comedi_pci_auto_config(dev, &ni_670x_driver, id->driver_data);
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}
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static const struct pci_device_id ni_670x_pci_table[] = {
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{ PCI_VDEVICE(NI, 0x1290), BOARD_PCI6704 },
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{ PCI_VDEVICE(NI, 0x1920), BOARD_PXI6704 },
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{ PCI_VDEVICE(NI, 0x2c90), BOARD_PCI6703 },
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{ 0 }
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};
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MODULE_DEVICE_TABLE(pci, ni_670x_pci_table);
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static struct pci_driver ni_670x_pci_driver = {
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.name = "ni_670x",
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.id_table = ni_670x_pci_table,
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.probe = ni_670x_pci_probe,
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.remove = comedi_pci_auto_unconfig,
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};
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module_comedi_pci_driver(ni_670x_driver, ni_670x_pci_driver);
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MODULE_AUTHOR("Comedi https://www.comedi.org");
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MODULE_DESCRIPTION("Comedi low-level driver");
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MODULE_LICENSE("GPL");
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