ni_mio_cs.c

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/*
    comedi/drivers/ni_mio_cs.c
    Hardware driver for NI PCMCIA MIO E series cards

    COMEDI - Linux Control and Measurement Device Interface
    Copyright (C) 1997-2000 David A. Schleef <[email protected]>

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

*/
/*
Driver: ni_mio_cs
Description: National Instruments DAQCard E series
Author: ds
Status: works
Devices: [National Instruments] DAQCard-AI-16XE-50 (ni_mio_cs),
  DAQCard-AI-16E-4, DAQCard-6062E, DAQCard-6024E, DAQCard-6036E
Updated: Thu Oct 23 19:43:17 CDT 2003

See the notes in the ni_atmio.o driver.
*/
/*
    The real guts of the driver is in ni_mio_common.c, which is
    included by all the E series drivers.

    References for specifications:

       341080a.pdf  DAQCard E Series Register Level Programmer Manual

*/

#include "../comedidev.h"

#include <linux/delay.h>

#include "ni_stc.h"
#include "8255.h"

#include <pcmcia/cistpl.h>
#include <pcmcia/ds.h>

#undef DEBUG

#define ATMIO 1
#undef PCIMIO

/*
 *  AT specific setup
 */

#define NI_SIZE 0x20

#define MAX_N_CALDACS 32

static const struct ni_board_struct ni_boards[] = {
    {.device_id = 0x010d,
     .name = "DAQCard-ai-16xe-50",
     .n_adchan = 16,
     .adbits = 16,
     .ai_fifo_depth = 1024,
     .alwaysdither = 0,
     .gainlkup = ai_gain_8,
     .ai_speed = 5000,
     .n_aochan = 0,
     .aobits = 0,
     .ao_fifo_depth = 0,
     .ao_unipolar = 0,
     .num_p0_dio_channels = 8,
     .has_8255 = 0,
     .caldac = {dac8800, dac8043},
     },
    {.device_id = 0x010c,
     .name = "DAQCard-ai-16e-4",
     .n_adchan = 16,
     .adbits = 12,
     .ai_fifo_depth = 1024,
     .alwaysdither = 0,
     .gainlkup = ai_gain_16,
     .ai_speed = 4000,
     .n_aochan = 0,
     .aobits = 0,
     .ao_fifo_depth = 0,
     .ao_unipolar = 0,
     .num_p0_dio_channels = 8,
     .has_8255 = 0,
     .caldac = {mb88341},   /* verified */
     },
    {.device_id = 0x02c4,
     .name = "DAQCard-6062E",
     .n_adchan = 16,
     .adbits = 12,
     .ai_fifo_depth = 8192,
     .alwaysdither = 0,
     .gainlkup = ai_gain_16,
     .ai_speed = 2000,
     .n_aochan = 2,
     .aobits = 12,
     .ao_fifo_depth = 2048,
     .ao_range_table = &range_bipolar10,
     .ao_unipolar = 0,
     .ao_speed = 1176,
     .num_p0_dio_channels = 8,
     .has_8255 = 0,
     .caldac = {ad8804_debug},  /* verified */
     },
    {.device_id = 0x075e,
     .name = "DAQCard-6024E",   /* specs incorrect! */
     .n_adchan = 16,
     .adbits = 12,
     .ai_fifo_depth = 1024,
     .alwaysdither = 0,
     .gainlkup = ai_gain_4,
     .ai_speed = 5000,
     .n_aochan = 2,
     .aobits = 12,
     .ao_fifo_depth = 0,
     .ao_range_table = &range_bipolar10,
     .ao_unipolar = 0,
     .ao_speed = 1000000,
     .num_p0_dio_channels = 8,
     .has_8255 = 0,
     .caldac = {ad8804_debug},
     },
    {.device_id = 0x0245,
     .name = "DAQCard-6036E",   /* specs incorrect! */
     .n_adchan = 16,
     .adbits = 16,
     .ai_fifo_depth = 1024,
     .alwaysdither = 1,
     .gainlkup = ai_gain_4,
     .ai_speed = 5000,
     .n_aochan = 2,
     .aobits = 16,
     .ao_fifo_depth = 0,
     .ao_range_table = &range_bipolar10,
     .ao_unipolar = 0,
     .ao_speed = 1000000,
     .num_p0_dio_channels = 8,
     .has_8255 = 0,
     .caldac = {ad8804_debug},
     },
#if 0
    {.device_id = 0x0000,   /* unknown */
     .name = "DAQCard-6715",
     .n_adchan = 0,
     .n_aochan = 8,
     .aobits = 12,
     .ao_671x = 8192,
     .num_p0_dio_channels = 8,
     .caldac = {mb88341, mb88341},
     },
#endif
    /* N.B. Update ni_mio_cs_ids[] when entries added above. */
};

#define interrupt_pin(a)    0

#define IRQ_POLARITY 1

#define NI_E_IRQ_FLAGS      IRQF_SHARED

struct ni_private {

    struct pcmcia_device *link;

 NI_PRIVATE_COMMON};

#define devpriv ((struct ni_private *)dev->private)

/* How we access registers */

#define ni_writel(a, b)     (outl((a), (b)+dev->iobase))
#define ni_readl(a)     (inl((a)+dev->iobase))
#define ni_writew(a, b)     (outw((a), (b)+dev->iobase))
#define ni_readw(a)     (inw((a)+dev->iobase))
#define ni_writeb(a, b)     (outb((a), (b)+dev->iobase))
#define ni_readb(a)     (inb((a)+dev->iobase))

/* How we access windowed registers */

/* We automatically take advantage of STC registers that can be
 * read/written directly in the I/O space of the board.  The
 * DAQCard devices map the low 8 STC registers to iobase+addr*2. */

static void mio_cs_win_out(struct comedi_device *dev, uint16_t data, int addr)
{
    unsigned long flags;

    spin_lock_irqsave(&devpriv->window_lock, flags);
    if (addr < 8) {
        ni_writew(data, addr * 2);
    } else {
        ni_writew(addr, Window_Address);
        ni_writew(data, Window_Data);
    }
    spin_unlock_irqrestore(&devpriv->window_lock, flags);
}

static uint16_t mio_cs_win_in(struct comedi_device *dev, int addr)
{
    unsigned long flags;
    uint16_t ret;

    spin_lock_irqsave(&devpriv->window_lock, flags);
    if (addr < 8) {
        ret = ni_readw(addr * 2);
    } else {
        ni_writew(addr, Window_Address);
        ret = ni_readw(Window_Data);
    }
    spin_unlock_irqrestore(&devpriv->window_lock, flags);

    return ret;
}

static int mio_cs_attach(struct comedi_device *dev,
             struct comedi_devconfig *it);
static void mio_cs_detach(struct comedi_device *dev);
static struct comedi_driver driver_ni_mio_cs = {
    .driver_name = "ni_mio_cs",
    .module = THIS_MODULE,
    .attach = mio_cs_attach,
    .detach = mio_cs_detach,
};

#include "ni_mio_common.c"

static int ni_getboardtype(struct comedi_device *dev,
               struct pcmcia_device *link);

static void mio_cs_detach(struct comedi_device *dev)
{
    mio_common_detach(dev);
    if (dev->irq)
        free_irq(dev->irq, dev);
}

static void mio_cs_config(struct pcmcia_device *link);
static void cs_release(struct pcmcia_device *link);
static void cs_detach(struct pcmcia_device *);

static struct pcmcia_device *cur_dev = NULL;

static int cs_attach(struct pcmcia_device *link)
{
    cur_dev = link;

    mio_cs_config(link);

    return 0;
}

static void cs_release(struct pcmcia_device *link)
{
    pcmcia_disable_device(link);
}

static void cs_detach(struct pcmcia_device *link)
{
    cs_release(link);
}

static int mio_cs_suspend(struct pcmcia_device *link)
{
    DPRINTK("pm suspend\n");

    return 0;
}

static int mio_cs_resume(struct pcmcia_device *link)
{
    DPRINTK("pm resume\n");
    return 0;
}


static int mio_pcmcia_config_loop(struct pcmcia_device *p_dev, void *priv_data)
{
    int base, ret;

    p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
    p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_16;

    for (base = 0x000; base < 0x400; base += 0x20) {
        p_dev->resource[0]->start = base;
        ret = pcmcia_request_io(p_dev);
        if (!ret)
            return 0;
    }
    return -ENODEV;
}


static void mio_cs_config(struct pcmcia_device *link)
{
    int ret;

    DPRINTK("mio_cs_config(link=%p)\n", link);
    link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO;

    ret = pcmcia_loop_config(link, mio_pcmcia_config_loop, NULL);
    if (ret) {
        dev_warn(&link->dev, "no configuration found\n");
        return;
    }

    if (!link->irq)
        dev_info(&link->dev, "no IRQ available\n");

    ret = pcmcia_enable_device(link);
}

static int mio_cs_attach(struct comedi_device *dev, struct comedi_devconfig *it)
{
    struct pcmcia_device *link;
    unsigned int irq;
    int ret;

    DPRINTK("mio_cs_attach(dev=%p,it=%p)\n", dev, it);

    link = cur_dev;     /* XXX hack */
    if (!link)
        return -EIO;

    dev->driver = &driver_ni_mio_cs;
    dev->iobase = link->resource[0]->start;

    irq = link->irq;

    printk("comedi%d: %s: DAQCard: io 0x%04lx, irq %u, ",
           dev->minor, dev->driver->driver_name, dev->iobase, irq);

#if 0
    {
        int i;

        printk(" board fingerprint:");
        for (i = 0; i < 32; i += 2) {
            printk(" %04x %02x", inw(dev->iobase + i),
                   inb(dev->iobase + i + 1));
        }
        printk("\n");
        printk(" board fingerprint (windowed):");
        for (i = 0; i < 10; i++)
            printk(" 0x%04x", win_in(i));
        printk("\n");
    }
#endif

    dev->board_ptr = ni_boards + ni_getboardtype(dev, link);

    printk(" %s", boardtype.name);
    dev->board_name = boardtype.name;

    ret = request_irq(irq, ni_E_interrupt, NI_E_IRQ_FLAGS,
              "ni_mio_cs", dev);
    if (ret < 0) {
        printk(" irq not available\n");
        return -EINVAL;
    }
    dev->irq = irq;

    /* allocate private area */
    ret = ni_alloc_private(dev);
    if (ret < 0)
        return ret;

    devpriv->stc_writew = &mio_cs_win_out;
    devpriv->stc_readw = &mio_cs_win_in;
    devpriv->stc_writel = &win_out2;
    devpriv->stc_readl = &win_in2;

    ret = ni_E_init(dev);

    if (ret < 0)
        return ret;

    return 0;
}

static int ni_getboardtype(struct comedi_device *dev,
               struct pcmcia_device *link)
{
    int i;

    for (i = 0; i < n_ni_boards; i++) {
        if (ni_boards[i].device_id == link->card_id)
            return i;
    }

    printk("unknown board 0x%04x -- pretend it is a ", link->card_id);

    return 0;
}

#ifdef MODULE

static const struct pcmcia_device_id ni_mio_cs_ids[] = {
    PCMCIA_DEVICE_MANF_CARD(0x010b, 0x010d),    /* DAQCard-ai-16xe-50 */
    PCMCIA_DEVICE_MANF_CARD(0x010b, 0x010c),    /* DAQCard-ai-16e-4 */
    PCMCIA_DEVICE_MANF_CARD(0x010b, 0x02c4),    /* DAQCard-6062E */
    PCMCIA_DEVICE_MANF_CARD(0x010b, 0x075e),    /* DAQCard-6024E */
    PCMCIA_DEVICE_MANF_CARD(0x010b, 0x0245),    /* DAQCard-6036E */
    PCMCIA_DEVICE_NULL
};

MODULE_DEVICE_TABLE(pcmcia, ni_mio_cs_ids);
MODULE_AUTHOR("David A. Schleef <[email protected]>");
MODULE_DESCRIPTION("Comedi driver for National Instruments DAQCard E series");
MODULE_LICENSE("GPL");

static struct pcmcia_driver ni_mio_cs_driver = {
    .probe = &cs_attach,
    .remove = &cs_detach,
    .suspend = &mio_cs_suspend,
    .resume = &mio_cs_resume,
    .id_table = ni_mio_cs_ids,
    .owner = THIS_MODULE,
    .name = "ni_mio_cs",
};

int init_module(void)
{
    pcmcia_register_driver(&ni_mio_cs_driver);
    comedi_driver_register(&driver_ni_mio_cs);
    return 0;
}

void cleanup_module(void)
{
    pcmcia_unregister_driver(&ni_mio_cs_driver);
#if 0
    while (cur_dev != NULL)
        cs_detach(cur_dev->handle);
#endif
    comedi_driver_unregister(&driver_ni_mio_cs);
}
#endif