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