ni_670x.c revision 2696fb57e6af653dd8b4df41b16754579f42fc78 
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/*
24Driver: ni_670x
25Description: National Instruments 670x
26Author: Bart Joris <bjoris@advalvas.be>
27Updated: Wed, 11 Dec 2002 18:25:35 -0800
28Devices: [National Instruments] PCI-6703 (ni_670x), PCI-6704
29Status: unknown
30
31Commands 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
63struct ni_670x_board {
64	unsigned short dev_id;
65	const char *name;
66	unsigned short ao_chans;
67	unsigned short ao_bits;
68};
69
70static const struct ni_670x_board ni_670x_boards[] = {
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
91static 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},
94	/* { PCI_VENDOR_ID_NATINST, 0x0000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, */
95	{0}
96};
97
98MODULE_DEVICE_TABLE(pci, ni_670x_pci_table);
99
100#define thisboard ((struct ni_670x_board *)dev->board_ptr)
101
102struct ni_670x_private {
103
104	struct mite_struct *mite;
105	int boardtype;
106	int dio;
107	unsigned int ao_readback[32];
108};
109
110
111#define devpriv ((struct ni_670x_private *)dev->private)
112#define n_ni_670x_boards (sizeof(ni_670x_boards)/sizeof(ni_670x_boards[0]))
113
114static int ni_670x_attach(struct comedi_device * dev, struct comedi_devconfig * it);
115static int ni_670x_detach(struct comedi_device * dev);
116
117static struct comedi_driver driver_ni_670x = {
118      driver_name:"ni_670x",
119      module:THIS_MODULE,
120      attach:ni_670x_attach,
121      detach:ni_670x_detach,
122};
123
124COMEDI_PCI_INITCLEANUP(driver_ni_670x, ni_670x_pci_table);
125
126static struct comedi_lrange range_0_20mA = { 1, {RANGE_mA(0, 20)} };
127
128static int ni_670x_find_device(struct comedi_device * dev, int bus, int slot);
129
130static int ni_670x_ao_winsn(struct comedi_device * dev, struct comedi_subdevice * s,
131	struct comedi_insn * insn, unsigned int * data);
132static int ni_670x_ao_rinsn(struct comedi_device * dev, struct comedi_subdevice * s,
133	struct comedi_insn * insn, unsigned int * data);
134static int ni_670x_dio_insn_bits(struct comedi_device * dev, struct comedi_subdevice * s,
135	struct comedi_insn * insn, unsigned int * data);
136static int ni_670x_dio_insn_config(struct comedi_device * dev, struct comedi_subdevice * s,
137	struct comedi_insn * insn, unsigned int * data);
138
139static int ni_670x_attach(struct comedi_device * dev, struct comedi_devconfig * it)
140{
141	struct comedi_subdevice *s;
142	int ret;
143	int i;
144
145	printk("comedi%d: ni_670x: ", dev->minor);
146
147	if ((ret = alloc_private(dev, sizeof(struct ni_670x_private))) < 0)
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) {
173		const struct comedi_lrange **range_table_list;
174
175		range_table_list = kmalloc(sizeof(struct comedi_lrange *) * 32,
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
208static int ni_670x_detach(struct comedi_device * dev)
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
224static int ni_670x_ao_winsn(struct comedi_device * dev, struct comedi_subdevice * s,
225	struct comedi_insn * insn, unsigned int * data)
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
250static int ni_670x_ao_rinsn(struct comedi_device * dev, struct comedi_subdevice * s,
251	struct comedi_insn * insn, unsigned int * data)
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
262static int ni_670x_dio_insn_bits(struct comedi_device * dev, struct comedi_subdevice * s,
263	struct comedi_insn * insn, unsigned int * data)
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
284static int ni_670x_dio_insn_config(struct comedi_device * dev, struct comedi_subdevice * s,
285	struct comedi_insn * insn, unsigned int * data)
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
311static int ni_670x_find_device(struct comedi_device * dev, int bus, int slot)
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}
338