[deliverable/linux.git] / drivers / staging / comedi / drivers / ni_670x.c

/*
    comedi/drivers/ni_670x.c
    Hardware driver for NI 670x devices

    COMEDI - Linux Control and Measurement Device Interface
    Copyright (C) 1997-2001 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.

*/
/*
Driver: ni_670x
Description: National Instruments 670x
Author: Bart Joris <bjoris@advalvas.be>
Updated: Wed, 11 Dec 2002 18:25:35 -0800
Devices: [National Instruments] PCI-6703 (ni_670x), PCI-6704
Status: unknown

Commands are not supported.
*/

/*
	Bart Joris <bjoris@advalvas.be> Last updated on 20/08/2001

	Manuals:

	322110a.pdf	PCI/PXI-6704 User Manual
	322110b.pdf	PCI/PXI-6703/6704 User Manual

*/

#include "../comedidev.h"

#include "mite.h"

#define PCI_VENDOR_ID_NATINST	0x1093

#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

/* Board description*/

struct ni_670x_board {
	unsigned short dev_id;
	const char *name;
	unsigned short ao_chans;
	unsigned short ao_bits;
};

static const struct ni_670x_board ni_670x_boards[] = {
	{
	      dev_id:	0x2c90,
	      name:	"PCI-6703",
	      ao_chans:16,
	      ao_bits:	16,
		},
	{
	      dev_id:	0x1920,
	      name:	"PXI-6704",
	      ao_chans:32,
	      ao_bits:	16,
		},
	{
	      dev_id:	0x1290,
	      name:	"PCI-6704",
	      ao_chans:32,
	      ao_bits:	16,
		},
};

static DEFINE_PCI_DEVICE_TABLE(ni_670x_pci_table) = {
	{PCI_VENDOR_ID_NATINST, 0x2c90, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
	{PCI_VENDOR_ID_NATINST, 0x1920, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
	/* { PCI_VENDOR_ID_NATINST, 0x0000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, */
	{0}
};

MODULE_DEVICE_TABLE(pci, ni_670x_pci_table);

#define thisboard ((struct ni_670x_board *)dev->board_ptr)

struct ni_670x_private {

	struct mite_struct *mite;
	int boardtype;
	int dio;
	unsigned int ao_readback[32];
};


#define devpriv ((struct ni_670x_private *)dev->private)
#define n_ni_670x_boards (sizeof(ni_670x_boards)/sizeof(ni_670x_boards[0]))

static int ni_670x_attach(struct comedi_device *dev, struct comedi_devconfig *it);
static int ni_670x_detach(struct comedi_device *dev);

static struct comedi_driver driver_ni_670x = {
      driver_name:"ni_670x",
      module:THIS_MODULE,
      attach:ni_670x_attach,
      detach:ni_670x_detach,
};

COMEDI_PCI_INITCLEANUP(driver_ni_670x, ni_670x_pci_table);

static struct comedi_lrange range_0_20mA = { 1, {RANGE_mA(0, 20)} };

static int ni_670x_find_device(struct comedi_device *dev, int bus, int slot);

static int ni_670x_ao_winsn(struct comedi_device *dev, struct comedi_subdevice *s,
	struct comedi_insn *insn, unsigned int *data);
static int ni_670x_ao_rinsn(struct comedi_device *dev, struct comedi_subdevice *s,
	struct comedi_insn *insn, unsigned int *data);
static int ni_670x_dio_insn_bits(struct comedi_device *dev, struct comedi_subdevice *s,
	struct comedi_insn *insn, unsigned int *data);
static int ni_670x_dio_insn_config(struct comedi_device *dev, struct comedi_subdevice *s,
	struct comedi_insn *insn, unsigned int *data);

static int ni_670x_attach(struct comedi_device *dev, struct comedi_devconfig *it)
{
	struct comedi_subdevice *s;
	int ret;
	int i;

	printk("comedi%d: ni_670x: ", dev->minor);

	if ((ret = alloc_private(dev, sizeof(struct ni_670x_private))) < 0)
		return ret;

	ret = ni_670x_find_device(dev, it->options[0], it->options[1]);
	if (ret < 0)
		return ret;

	ret = mite_setup(devpriv->mite);
	if (ret < 0) {
		printk("error setting up mite\n");
		return ret;
	}
	dev->board_name = thisboard->name;
	dev->irq = mite_irq(devpriv->mite);
	printk(" %s", dev->board_name);

	if (alloc_subdevices(dev, 2) < 0)
		return -ENOMEM;

	s = dev->subdevices + 0;
	/* analog output subdevice */
	s->type = COMEDI_SUBD_AO;
	s->subdev_flags = SDF_WRITABLE;
	s->n_chan = thisboard->ao_chans;
	s->maxdata = 0xffff;
	if (s->n_chan == 32) {
		const struct comedi_lrange **range_table_list;

		range_table_list = kmalloc(sizeof(struct comedi_lrange *) * 32,
			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_winsn;
	s->insn_read = &ni_670x_ao_rinsn;

	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;

	writel(0x10, devpriv->mite->daq_io_addr + MISC_CONTROL_OFFSET);	/* Config of misc registers */
	writel(0x00, devpriv->mite->daq_io_addr + AO_CONTROL_OFFSET);	/* Config of ao registers */

	printk("attached\n");

	return 1;
}

static int ni_670x_detach(struct comedi_device *dev)
{
	printk("comedi%d: ni_670x: remove\n", dev->minor);

	if (dev->subdevices[0].range_table_list) {
		kfree(dev->subdevices[0].range_table_list);
	}
	if (dev->private && devpriv->mite)
		mite_unsetup(devpriv->mite);

	if (dev->irq)
		comedi_free_irq(dev->irq, dev);

	return 0;
}

static int ni_670x_ao_winsn(struct comedi_device *dev, struct comedi_subdevice *s,
	struct comedi_insn *insn, unsigned int *data)
{
	int i;
	int chan = CR_CHAN(insn->chanspec);

	/* 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++) {
		writel(((chan & 15) << 1) | ((chan & 16) >> 4), devpriv->mite->daq_io_addr + AO_CHAN_OFFSET);	/* First write in channel register which channel to use */
		writel(data[i], devpriv->mite->daq_io_addr + AO_VALUE_OFFSET);	/* write channel value */
		devpriv->ao_readback[chan] = data[i];
	}

	return i;
}

static int ni_670x_ao_rinsn(struct comedi_device *dev, struct comedi_subdevice *s,
	struct comedi_insn *insn, unsigned int *data)
{
	int i;
	int chan = CR_CHAN(insn->chanspec);

	for (i = 0; i < insn->n; i++)
		data[i] = devpriv->ao_readback[chan];

	return i;
}

static int ni_670x_dio_insn_bits(struct comedi_device *dev, struct comedi_subdevice *s,
	struct comedi_insn *insn, unsigned int *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];
		writel(s->state,
			devpriv->mite->daq_io_addr + DIO_PORT0_DATA_OFFSET);
	}

	/* on return, data[1] contains the value of the digital
	 * input lines. */
	data[1] = readl(devpriv->mite->daq_io_addr + DIO_PORT0_DATA_OFFSET);

	return 2;
}

static int ni_670x_dio_insn_config(struct comedi_device *dev, struct comedi_subdevice *s,
	struct comedi_insn *insn, unsigned int *data)
{
	int chan = CR_CHAN(insn->chanspec);

	switch (data[0]) {
	case INSN_CONFIG_DIO_OUTPUT:
		s->io_bits |= 1 << chan;
		break;
	case INSN_CONFIG_DIO_INPUT:
		s->io_bits &= ~(1 << chan);
		break;
	case INSN_CONFIG_DIO_QUERY:
		data[1] =
			(s->
			io_bits & (1 << chan)) ? COMEDI_OUTPUT : COMEDI_INPUT;
		return insn->n;
		break;
	default:
		return -EINVAL;
		break;
	}
	writel(s->io_bits, devpriv->mite->daq_io_addr + DIO_PORT0_DIR_OFFSET);

	return insn->n;
}

static int ni_670x_find_device(struct comedi_device *dev, int bus, int slot)
{
	struct mite_struct *mite;
	int i;

	for (mite = mite_devices; mite; mite = mite->next) {
		if (mite->used)
			continue;
		if (bus || slot) {
			if (bus != mite->pcidev->bus->number
				|| slot != PCI_SLOT(mite->pcidev->devfn))
				continue;
		}

		for (i = 0; i < n_ni_670x_boards; i++) {
			if (mite_device_id(mite) == ni_670x_boards[i].dev_id) {
				dev->board_ptr = ni_670x_boards + i;
				devpriv->mite = mite;

				return 0;
			}
		}
	}
	printk("no device found\n");
	mite_list_devices();
	return -EIO;
}
Commit	Line	Data
3c5e1722 BJ	1	/*
	2	comedi/drivers/ni_670x.c
	3	Hardware driver for NI 670x devices
	4
	5	COMEDI - Linux Control and Measurement Device Interface
	6	Copyright (C) 1997-2001 David A. Schleef <ds@schleef.org>
	7
	8	This program is free software; you can redistribute it and/or modify
	9	it under the terms of the GNU General Public License as published by
	10	the Free Software Foundation; either version 2 of the License, or
	11	(at your option) any later version.
	12
	13	This program is distributed in the hope that it will be useful,
	14	but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	GNU General Public License for more details.
	17
	18	You should have received a copy of the GNU General Public License
	19	along with this program; if not, write to the Free Software
	20	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	21
	22	*/
	23	/*
	24	Driver: ni_670x
	25	Description: National Instruments 670x
	26	Author: Bart Joris <bjoris@advalvas.be>
	27	Updated: Wed, 11 Dec 2002 18:25:35 -0800
	28	Devices: [National Instruments] PCI-6703 (ni_670x), PCI-6704
	29	Status: unknown
	30
	31	Commands are not supported.
	32	*/
	33
	34	/*
	35	Bart Joris <bjoris@advalvas.be> Last updated on 20/08/2001
	36
	37	Manuals:
	38
	39	322110a.pdf PCI/PXI-6704 User Manual
	40	322110b.pdf PCI/PXI-6703/6704 User Manual
	41
	42	*/
	43
	44	#include "../comedidev.h"
	45
	46	#include "mite.h"
	47
	48	#define PCI_VENDOR_ID_NATINST 0x1093
	49
	50	#define AO_VALUE_OFFSET 0x00
	51	#define AO_CHAN_OFFSET 0x0c
	52	#define AO_STATUS_OFFSET 0x10
	53	#define AO_CONTROL_OFFSET 0x10
	54	#define DIO_PORT0_DIR_OFFSET 0x20
	55	#define DIO_PORT0_DATA_OFFSET 0x24
	56	#define DIO_PORT1_DIR_OFFSET 0x28
	57	#define DIO_PORT1_DATA_OFFSET 0x2c
	58	#define MISC_STATUS_OFFSET 0x14
	59	#define MISC_CONTROL_OFFSET 0x14
	60
	61	/* Board description*/
	62
43313b07	63	struct ni_670x_board {
3c5e1722 BJ	64	unsigned short dev_id;
	65	const char *name;
	66	unsigned short ao_chans;
	67	unsigned short ao_bits;
43313b07 BP	68	};
	69
	70	static const struct ni_670x_board ni_670x_boards[] = {
3c5e1722 BJ	71	{
	72	dev_id: 0x2c90,
	73	name: "PCI-6703",
	74	ao_chans:16,
	75	ao_bits: 16,
	76	},
	77	{
	78	dev_id: 0x1920,
	79	name: "PXI-6704",
	80	ao_chans:32,
	81	ao_bits: 16,
	82	},
	83	{
	84	dev_id: 0x1290,
	85	name: "PCI-6704",
	86	ao_chans:32,
	87	ao_bits: 16,
	88	},
	89	};
	90
	91	static DEFINE_PCI_DEVICE_TABLE(ni_670x_pci_table) = {
	92	{PCI_VENDOR_ID_NATINST, 0x2c90, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
	93	{PCI_VENDOR_ID_NATINST, 0x1920, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
2696fb57	94	/* { PCI_VENDOR_ID_NATINST, 0x0000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, */
3c5e1722 BJ	95	{0}
	96	};
	97
	98	MODULE_DEVICE_TABLE(pci, ni_670x_pci_table);
	99
43313b07	100	#define thisboard ((struct ni_670x_board *)dev->board_ptr)
3c5e1722	101
8ce8a1ff BP	102	struct ni_670x_private {
8ce8a1ff BP	103
3c5e1722 BJ	104	struct mite_struct *mite;
	105	int boardtype;
	106	int dio;
790c5541	107	unsigned int ao_readback[32];
8ce8a1ff BP	108	};
8ce8a1ff BP	109
3c5e1722	110
8ce8a1ff	111	#define devpriv ((struct ni_670x_private *)dev->private)
3c5e1722 BJ	112	#define n_ni_670x_boards (sizeof(ni_670x_boards)/sizeof(ni_670x_boards[0]))
3c5e1722 BJ	113
da91b269 BP	114	static int ni_670x_attach(struct comedi_device dev, struct comedi_devconfig it);
da91b269 BP	115	static int ni_670x_detach(struct comedi_device *dev);
3c5e1722	116
139dfbdf	117	static struct comedi_driver driver_ni_670x = {
3c5e1722 BJ	118	driver_name:"ni_670x",
	119	module:THIS_MODULE,
	120	attach:ni_670x_attach,
	121	detach:ni_670x_detach,
	122	};
	123
	124	COMEDI_PCI_INITCLEANUP(driver_ni_670x, ni_670x_pci_table);
	125
9ced1de6	126	static struct comedi_lrange range_0_20mA = { 1, {RANGE_mA(0, 20)} };
3c5e1722	127
da91b269	128	static int ni_670x_find_device(struct comedi_device *dev, int bus, int slot);
3c5e1722	129
da91b269 BP	130	static int ni_670x_ao_winsn(struct comedi_device dev, struct comedi_subdevice s,
	131	struct comedi_insn insn, unsigned int data);
	132	static int ni_670x_ao_rinsn(struct comedi_device dev, struct comedi_subdevice s,
	133	struct comedi_insn insn, unsigned int data);
	134	static int ni_670x_dio_insn_bits(struct comedi_device dev, struct comedi_subdevice s,
	135	struct comedi_insn insn, unsigned int data);
	136	static int ni_670x_dio_insn_config(struct comedi_device dev, struct comedi_subdevice s,
	137	struct comedi_insn insn, unsigned int data);
3c5e1722	138
da91b269	139	static int ni_670x_attach(struct comedi_device dev, struct comedi_devconfig it)
3c5e1722	140	{
34c43922	141	struct comedi_subdevice *s;
3c5e1722 BJ	142	int ret;
	143	int i;
	144
	145	printk("comedi%d: ni_670x: ", dev->minor);
	146
8ce8a1ff	147	if ((ret = alloc_private(dev, sizeof(struct ni_670x_private))) < 0)
3c5e1722 BJ	148	return ret;
	149
	150	ret = ni_670x_find_device(dev, it->options[0], it->options[1]);
	151	if (ret < 0)
	152	return ret;
	153
	154	ret = mite_setup(devpriv->mite);
	155	if (ret < 0) {
	156	printk("error setting up mite\n");
	157	return ret;
	158	}
	159	dev->board_name = thisboard->name;
	160	dev->irq = mite_irq(devpriv->mite);
	161	printk(" %s", dev->board_name);
	162
	163	if (alloc_subdevices(dev, 2) < 0)
	164	return -ENOMEM;
	165
	166	s = dev->subdevices + 0;
	167	/* analog output subdevice */
	168	s->type = COMEDI_SUBD_AO;
	169	s->subdev_flags = SDF_WRITABLE;
	170	s->n_chan = thisboard->ao_chans;
	171	s->maxdata = 0xffff;
	172	if (s->n_chan == 32) {
9ced1de6	173	const struct comedi_lrange **range_table_list;
3c5e1722	174
9ced1de6	175	range_table_list = kmalloc(sizeof(struct comedi_lrange ) 32,
3c5e1722 BJ	176	GFP_KERNEL);
	177	if (!range_table_list)
	178	return -ENOMEM;
	179	s->range_table_list = range_table_list;
	180	for (i = 0; i < 16; i++) {
	181	range_table_list[i] = &range_bipolar10;
	182	range_table_list[16 + i] = &range_0_20mA;
	183	}
	184	} else {
	185	s->range_table = &range_bipolar10;
	186	}
	187	s->insn_write = &ni_670x_ao_winsn;
	188	s->insn_read = &ni_670x_ao_rinsn;
	189
	190	s = dev->subdevices + 1;
	191	/* digital i/o subdevice */
	192	s->type = COMEDI_SUBD_DIO;
	193	s->subdev_flags = SDF_READABLE \| SDF_WRITABLE;
	194	s->n_chan = 8;
	195	s->maxdata = 1;
	196	s->range_table = &range_digital;
	197	s->insn_bits = ni_670x_dio_insn_bits;
	198	s->insn_config = ni_670x_dio_insn_config;
	199
	200	writel(0x10, devpriv->mite->daq_io_addr + MISC_CONTROL_OFFSET); /* Config of misc registers */
	201	writel(0x00, devpriv->mite->daq_io_addr + AO_CONTROL_OFFSET); /* Config of ao registers */
	202
	203	printk("attached\n");
	204
	205	return 1;
	206	}
	207
da91b269	208	static int ni_670x_detach(struct comedi_device *dev)
3c5e1722 BJ	209	{
	210	printk("comedi%d: ni_670x: remove\n", dev->minor);
	211
	212	if (dev->subdevices[0].range_table_list) {
	213	kfree(dev->subdevices[0].range_table_list);
	214	}
	215	if (dev->private && devpriv->mite)
	216	mite_unsetup(devpriv->mite);
	217
	218	if (dev->irq)
	219	comedi_free_irq(dev->irq, dev);
	220
	221	return 0;
	222	}
	223
da91b269 BP	224	static int ni_670x_ao_winsn(struct comedi_device dev, struct comedi_subdevice s,
da91b269 BP	225	struct comedi_insn insn, unsigned int data)
3c5e1722 BJ	226	{
	227	int i;
	228	int chan = CR_CHAN(insn->chanspec);
	229
	230	/* Channel number mapping :
	231
	232	NI 6703/ NI 6704 \| NI 6704 Only
	233	----------------------------------------------------
	234	vch(0) : 0 \| ich(16) : 1
	235	vch(1) : 2 \| ich(17) : 3
	236	. : . \| . .
	237	. : . \| . .
	238	. : . \| . .
	239	vch(15) : 30 \| ich(31) : 31 */
	240
	241	for (i = 0; i < insn->n; i++) {
	242	writel(((chan & 15) << 1) \| ((chan & 16) >> 4), devpriv->mite->daq_io_addr + AO_CHAN_OFFSET); /* First write in channel register which channel to use */
	243	writel(data[i], devpriv->mite->daq_io_addr + AO_VALUE_OFFSET); /* write channel value */
	244	devpriv->ao_readback[chan] = data[i];
	245	}
	246
	247	return i;
	248	}
	249
da91b269 BP	250	static int ni_670x_ao_rinsn(struct comedi_device dev, struct comedi_subdevice s,
da91b269 BP	251	struct comedi_insn insn, unsigned int data)
3c5e1722 BJ	252	{
	253	int i;
	254	int chan = CR_CHAN(insn->chanspec);
	255
	256	for (i = 0; i < insn->n; i++)
	257	data[i] = devpriv->ao_readback[chan];
	258
	259	return i;
	260	}
	261
da91b269 BP	262	static int ni_670x_dio_insn_bits(struct comedi_device dev, struct comedi_subdevice s,
da91b269 BP	263	struct comedi_insn insn, unsigned int data)
3c5e1722 BJ	264	{
	265	if (insn->n != 2)
	266	return -EINVAL;
	267
	268	/* The insn data is a mask in data[0] and the new data
	269	* in data[1], each channel cooresponding to a bit. */
	270	if (data[0]) {
	271	s->state &= ~data[0];
	272	s->state \|= data[0] & data[1];
	273	writel(s->state,
	274	devpriv->mite->daq_io_addr + DIO_PORT0_DATA_OFFSET);
	275	}
	276
	277	/* on return, data[1] contains the value of the digital
	278	* input lines. */
	279	data[1] = readl(devpriv->mite->daq_io_addr + DIO_PORT0_DATA_OFFSET);
	280
	281	return 2;
	282	}
	283
da91b269 BP	284	static int ni_670x_dio_insn_config(struct comedi_device dev, struct comedi_subdevice s,
da91b269 BP	285	struct comedi_insn insn, unsigned int data)
3c5e1722 BJ	286	{
	287	int chan = CR_CHAN(insn->chanspec);
	288
	289	switch (data[0]) {
	290	case INSN_CONFIG_DIO_OUTPUT:
	291	s->io_bits \|= 1 << chan;
	292	break;
	293	case INSN_CONFIG_DIO_INPUT:
	294	s->io_bits &= ~(1 << chan);
	295	break;
	296	case INSN_CONFIG_DIO_QUERY:
	297	data[1] =
	298	(s->
	299	io_bits & (1 << chan)) ? COMEDI_OUTPUT : COMEDI_INPUT;
	300	return insn->n;
	301	break;
	302	default:
	303	return -EINVAL;
	304	break;
	305	}
	306	writel(s->io_bits, devpriv->mite->daq_io_addr + DIO_PORT0_DIR_OFFSET);
	307
	308	return insn->n;
	309	}
	310
da91b269	311	static int ni_670x_find_device(struct comedi_device *dev, int bus, int slot)
3c5e1722 BJ	312	{
	313	struct mite_struct *mite;
	314	int i;
	315
	316	for (mite = mite_devices; mite; mite = mite->next) {
	317	if (mite->used)
	318	continue;
	319	if (bus \|\| slot) {
	320	if (bus != mite->pcidev->bus->number
	321	\|\| slot != PCI_SLOT(mite->pcidev->devfn))
	322	continue;
	323	}
	324
	325	for (i = 0; i < n_ni_670x_boards; i++) {
	326	if (mite_device_id(mite) == ni_670x_boards[i].dev_id) {
	327	dev->board_ptr = ni_670x_boards + i;
	328	devpriv->mite = mite;
	329
	330	return 0;
	331	}
	332	}
	333	}
	334	printk("no device found\n");
	335	mite_list_devices();
	336	return -EIO;
	337	}