ni_670x.c revision c733110ae3c49a69907b89f37ff1721a157df0f3 
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 <linux/interrupt.h>
45#include "../comedidev.h"
46
47#include "mite.h"
48
49#define PCI_VENDOR_ID_NATINST	0x1093
50
51#define AO_VALUE_OFFSET			0x00
52#define	AO_CHAN_OFFSET			0x0c
53#define	AO_STATUS_OFFSET		0x10
54#define AO_CONTROL_OFFSET		0x10
55#define	DIO_PORT0_DIR_OFFSET	0x20
56#define	DIO_PORT0_DATA_OFFSET	0x24
57#define	DIO_PORT1_DIR_OFFSET	0x28
58#define	DIO_PORT1_DATA_OFFSET	0x2c
59#define	MISC_STATUS_OFFSET		0x14
60#define	MISC_CONTROL_OFFSET		0x14
61
62/* Board description*/
63
64struct ni_670x_board {
65	unsigned short dev_id;
66	const char *name;
67	unsigned short ao_chans;
68	unsigned short ao_bits;
69};
70
71static const struct ni_670x_board ni_670x_boards[] = {
72	{
73	 .dev_id = 0x2c90,
74	 .name = "PCI-6703",
75	 .ao_chans = 16,
76	 .ao_bits = 16,
77	 },
78	{
79	 .dev_id = 0x1920,
80	 .name = "PXI-6704",
81	 .ao_chans = 32,
82	 .ao_bits = 16,
83	 },
84	{
85	 .dev_id = 0x1290,
86	 .name = "PCI-6704",
87	 .ao_chans = 32,
88	 .ao_bits = 16,
89	 },
90};
91
92static DEFINE_PCI_DEVICE_TABLE(ni_670x_pci_table) = {
93	{
94	PCI_VENDOR_ID_NATINST, 0x2c90, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, {
95	PCI_VENDOR_ID_NATINST, 0x1920, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
96	/*{ PCI_VENDOR_ID_NATINST, 0x0000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },*/
97	{
98	0}
99};
100
101MODULE_DEVICE_TABLE(pci, ni_670x_pci_table);
102
103#define thisboard ((struct ni_670x_board *)dev->board_ptr)
104
105struct ni_670x_private {
106
107	struct mite_struct *mite;
108	int boardtype;
109	int dio;
110	unsigned int ao_readback[32];
111};
112
113#define devpriv ((struct ni_670x_private *)dev->private)
114#define n_ni_670x_boards ARRAY_SIZE(ni_670x_boards)
115
116static int ni_670x_attach(struct comedi_device *dev,
117			  struct comedi_devconfig *it);
118static int ni_670x_detach(struct comedi_device *dev);
119
120static struct comedi_driver driver_ni_670x = {
121	.driver_name = "ni_670x",
122	.module = THIS_MODULE,
123	.attach = ni_670x_attach,
124	.detach = ni_670x_detach,
125};
126
127COMEDI_PCI_INITCLEANUP(driver_ni_670x, ni_670x_pci_table);
128
129static struct comedi_lrange range_0_20mA = { 1, {RANGE_mA(0, 20)} };
130
131static int ni_670x_find_device(struct comedi_device *dev, int bus, int slot);
132
133static int ni_670x_ao_winsn(struct comedi_device *dev,
134			    struct comedi_subdevice *s,
135			    struct comedi_insn *insn, unsigned int *data);
136static int ni_670x_ao_rinsn(struct comedi_device *dev,
137			    struct comedi_subdevice *s,
138			    struct comedi_insn *insn, unsigned int *data);
139static int ni_670x_dio_insn_bits(struct comedi_device *dev,
140				 struct comedi_subdevice *s,
141				 struct comedi_insn *insn, unsigned int *data);
142static int ni_670x_dio_insn_config(struct comedi_device *dev,
143				   struct comedi_subdevice *s,
144				   struct comedi_insn *insn,
145				   unsigned int *data);
146
147static int ni_670x_attach(struct comedi_device *dev,
148			  struct comedi_devconfig *it)
149{
150	struct comedi_subdevice *s;
151	int ret;
152	int i;
153
154	printk(KERN_INFO "comedi%d: ni_670x: ", dev->minor);
155
156	ret = alloc_private(dev, sizeof(struct ni_670x_private));
157	if (ret < 0)
158		return ret;
159
160	ret = ni_670x_find_device(dev, it->options[0], it->options[1]);
161	if (ret < 0)
162		return ret;
163
164	ret = mite_setup(devpriv->mite);
165	if (ret < 0) {
166		printk(KERN_WARNING "error setting up mite\n");
167		return ret;
168	}
169	dev->board_name = thisboard->name;
170	dev->irq = mite_irq(devpriv->mite);
171	printk(KERN_INFO " %s", dev->board_name);
172
173	if (alloc_subdevices(dev, 2) < 0)
174		return -ENOMEM;
175
176	s = dev->subdevices + 0;
177	/* analog output subdevice */
178	s->type = COMEDI_SUBD_AO;
179	s->subdev_flags = SDF_WRITABLE;
180	s->n_chan = thisboard->ao_chans;
181	s->maxdata = 0xffff;
182	if (s->n_chan == 32) {
183		const struct comedi_lrange **range_table_list;
184
185		range_table_list = kmalloc(sizeof(struct comedi_lrange *) * 32,
186					   GFP_KERNEL);
187		if (!range_table_list)
188			return -ENOMEM;
189		s->range_table_list = range_table_list;
190		for (i = 0; i < 16; i++) {
191			range_table_list[i] = &range_bipolar10;
192			range_table_list[16 + i] = &range_0_20mA;
193		}
194	} else {
195		s->range_table = &range_bipolar10;
196	}
197	s->insn_write = &ni_670x_ao_winsn;
198	s->insn_read = &ni_670x_ao_rinsn;
199
200	s = dev->subdevices + 1;
201	/* digital i/o subdevice */
202	s->type = COMEDI_SUBD_DIO;
203	s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
204	s->n_chan = 8;
205	s->maxdata = 1;
206	s->range_table = &range_digital;
207	s->insn_bits = ni_670x_dio_insn_bits;
208	s->insn_config = ni_670x_dio_insn_config;
209
210	/* Config of misc registers */
211	writel(0x10, devpriv->mite->daq_io_addr + MISC_CONTROL_OFFSET);
212	/* Config of ao registers */
213	writel(0x00, devpriv->mite->daq_io_addr + AO_CONTROL_OFFSET);
214
215	printk(KERN_INFO "attached\n");
216
217	return 1;
218}
219
220static int ni_670x_detach(struct comedi_device *dev)
221{
222	printk(KERN_INFO "comedi%d: ni_670x: remove\n", dev->minor);
223
224	kfree(dev->subdevices[0].range_table_list);
225
226	if (dev->private && devpriv->mite)
227		mite_unsetup(devpriv->mite);
228
229	if (dev->irq)
230		free_irq(dev->irq, dev);
231
232	return 0;
233}
234
235static int ni_670x_ao_winsn(struct comedi_device *dev,
236			    struct comedi_subdevice *s,
237			    struct comedi_insn *insn, unsigned int *data)
238{
239	int i;
240	int chan = CR_CHAN(insn->chanspec);
241
242	/* Channel number mapping :
243
244	   NI 6703/ NI 6704     | NI 6704 Only
245	   ----------------------------------------------------
246	   vch(0)       :       0       | ich(16)       :       1
247	   vch(1)       :       2       | ich(17)       :       3
248	   .    :       .       |   .                   .
249	   .    :       .       |   .                   .
250	   .    :       .       |   .                   .
251	   vch(15)      :       30      | ich(31)       :       31      */
252
253	for (i = 0; i < insn->n; i++) {
254		/* First write in channel register which channel to use */
255		writel(((chan & 15) << 1) | ((chan & 16) >> 4),
256		       devpriv->mite->daq_io_addr + AO_CHAN_OFFSET);
257		/* write channel value */
258		writel(data[i], devpriv->mite->daq_io_addr + AO_VALUE_OFFSET);
259		devpriv->ao_readback[chan] = data[i];
260	}
261
262	return i;
263}
264
265static int ni_670x_ao_rinsn(struct comedi_device *dev,
266			    struct comedi_subdevice *s,
267			    struct comedi_insn *insn, unsigned int *data)
268{
269	int i;
270	int chan = CR_CHAN(insn->chanspec);
271
272	for (i = 0; i < insn->n; i++)
273		data[i] = devpriv->ao_readback[chan];
274
275	return i;
276}
277
278static int ni_670x_dio_insn_bits(struct comedi_device *dev,
279				 struct comedi_subdevice *s,
280				 struct comedi_insn *insn, unsigned int *data)
281{
282	if (insn->n != 2)
283		return -EINVAL;
284
285	/* The insn data is a mask in data[0] and the new data
286	 * in data[1], each channel cooresponding to a bit. */
287	if (data[0]) {
288		s->state &= ~data[0];
289		s->state |= data[0] & data[1];
290		writel(s->state,
291		       devpriv->mite->daq_io_addr + DIO_PORT0_DATA_OFFSET);
292	}
293
294	/* on return, data[1] contains the value of the digital
295	 * input lines. */
296	data[1] = readl(devpriv->mite->daq_io_addr + DIO_PORT0_DATA_OFFSET);
297
298	return 2;
299}
300
301static int ni_670x_dio_insn_config(struct comedi_device *dev,
302				   struct comedi_subdevice *s,
303				   struct comedi_insn *insn, unsigned int *data)
304{
305	int chan = CR_CHAN(insn->chanspec);
306
307	switch (data[0]) {
308	case INSN_CONFIG_DIO_OUTPUT:
309		s->io_bits |= 1 << chan;
310		break;
311	case INSN_CONFIG_DIO_INPUT:
312		s->io_bits &= ~(1 << chan);
313		break;
314	case INSN_CONFIG_DIO_QUERY:
315		data[1] =
316		    (s->io_bits & (1 << chan)) ? COMEDI_OUTPUT : COMEDI_INPUT;
317		return insn->n;
318		break;
319	default:
320		return -EINVAL;
321		break;
322	}
323	writel(s->io_bits, devpriv->mite->daq_io_addr + DIO_PORT0_DIR_OFFSET);
324
325	return insn->n;
326}
327
328static int ni_670x_find_device(struct comedi_device *dev, int bus, int slot)
329{
330	struct mite_struct *mite;
331	int i;
332
333	for (mite = mite_devices; mite; mite = mite->next) {
334		if (mite->used)
335			continue;
336		if (bus || slot) {
337			if (bus != mite->pcidev->bus->number
338			    || slot != PCI_SLOT(mite->pcidev->devfn))
339				continue;
340		}
341
342		for (i = 0; i < n_ni_670x_boards; i++) {
343			if (mite_device_id(mite) == ni_670x_boards[i].dev_id) {
344				dev->board_ptr = ni_670x_boards + i;
345				devpriv->mite = mite;
346
347				return 0;
348			}
349		}
350	}
351	printk(KERN_INFO "no device found\n");
352	mite_list_devices();
353	return -EIO;
354}
355