Free Electrons

Embedded Linux Experts

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
/*
    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 <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_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 int 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);

/* clean up allocated resources */
/* called when driver is removed */
static int mio_cs_detach(struct comedi_device *dev)
{
	mio_common_detach(dev);

	/* PCMCIA layer frees the IO region */

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

	return 0;
}

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)
{
	DPRINTK("cs_detach(link=%p)\n", 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, it);

	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 <ds@schleef.org>");
MODULE_DESCRIPTION("Comedi driver for National Instruments DAQCard E series");
MODULE_LICENSE("GPL");

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