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Staging: comedi: Remove COMEDI_PCI_INITCLEANUP macro
[deliverable/linux.git] / drivers / staging / comedi / drivers / me_daq.c
1 /*
2
3 comedi/drivers/me_daq.c
4
5 Hardware driver for Meilhaus data acquisition cards:
6
7 ME-2000i, ME-2600i, ME-3000vm1
8
9 Copyright (C) 2002 Michael Hillmann <hillmann@syscongroup.de>
10
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 2 of the License, or
14 (at your option) any later version.
15
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
20
21 You should have received a copy of the GNU General Public License
22 along with this program; if not, write to the Free Software
23 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 */
25
26 /*
27 Driver: me_daq
28 Description: Meilhaus PCI data acquisition cards
29 Author: Michael Hillmann <hillmann@syscongroup.de>
30 Devices: [Meilhaus] ME-2600i (me_daq), ME-2000i
31 Status: experimental
32
33 Supports:
34
35 Analog Output
36
37 Configuration options:
38
39 [0] - PCI bus number (optional)
40 [1] - PCI slot number (optional)
41
42 If bus/slot is not specified, the first available PCI
43 device will be used.
44
45 The 2600 requires a firmware upload, which can be accomplished
46 using the -i or --init-data option of comedi_config.
47 The firmware can be
48 found in the comedi_nonfree_firmware tarball available
49 from http://www.comedi.org
50
51 */
52
53 #include <linux/interrupt.h>
54 #include <linux/sched.h>
55 #include "../comedidev.h"
56
57 #include "comedi_pci.h"
58
59 /*#include "me2600_fw.h" */
60
61 #define ME_DRIVER_NAME "me_daq"
62
63 #define PCI_VENDOR_ID_MEILHAUS 0x1402
64 #define ME2000_DEVICE_ID 0x2000
65 #define ME2600_DEVICE_ID 0x2600
66
67 #define PLX_INTCSR 0x4C /* PLX interrupt status register */
68 #define XILINX_DOWNLOAD_RESET 0x42 /* Xilinx registers */
69
70 #define ME_CONTROL_1 0x0000 /* - | W */
71 #define INTERRUPT_ENABLE (1<<15)
72 #define COUNTER_B_IRQ (1<<12)
73 #define COUNTER_A_IRQ (1<<11)
74 #define CHANLIST_READY_IRQ (1<<10)
75 #define EXT_IRQ (1<<9)
76 #define ADFIFO_HALFFULL_IRQ (1<<8)
77 #define SCAN_COUNT_ENABLE (1<<5)
78 #define SIMULTANEOUS_ENABLE (1<<4)
79 #define TRIGGER_FALLING_EDGE (1<<3)
80 #define CONTINUOUS_MODE (1<<2)
81 #define DISABLE_ADC (0<<0)
82 #define SOFTWARE_TRIGGERED_ADC (1<<0)
83 #define SCAN_TRIGGERED_ADC (2<<0)
84 #define EXT_TRIGGERED_ADC (3<<0)
85 #define ME_ADC_START 0x0000 /* R | - */
86 #define ME_CONTROL_2 0x0002 /* - | W */
87 #define ENABLE_ADFIFO (1<<10)
88 #define ENABLE_CHANLIST (1<<9)
89 #define ENABLE_PORT_B (1<<7)
90 #define ENABLE_PORT_A (1<<6)
91 #define ENABLE_COUNTER_B (1<<4)
92 #define ENABLE_COUNTER_A (1<<3)
93 #define ENABLE_DAC (1<<1)
94 #define BUFFERED_DAC (1<<0)
95 #define ME_DAC_UPDATE 0x0002 /* R | - */
96 #define ME_STATUS 0x0004 /* R | - */
97 #define COUNTER_B_IRQ_PENDING (1<<12)
98 #define COUNTER_A_IRQ_PENDING (1<<11)
99 #define CHANLIST_READY_IRQ_PENDING (1<<10)
100 #define EXT_IRQ_PENDING (1<<9)
101 #define ADFIFO_HALFFULL_IRQ_PENDING (1<<8)
102 #define ADFIFO_FULL (1<<4)
103 #define ADFIFO_HALFFULL (1<<3)
104 #define ADFIFO_EMPTY (1<<2)
105 #define CHANLIST_FULL (1<<1)
106 #define FST_ACTIVE (1<<0)
107 #define ME_RESET_INTERRUPT 0x0004 /* - | W */
108 #define ME_DIO_PORT_A 0x0006 /* R | W */
109 #define ME_DIO_PORT_B 0x0008 /* R | W */
110 #define ME_TIMER_DATA_0 0x000A /* - | W */
111 #define ME_TIMER_DATA_1 0x000C /* - | W */
112 #define ME_TIMER_DATA_2 0x000E /* - | W */
113 #define ME_CHANNEL_LIST 0x0010 /* - | W */
114 #define ADC_UNIPOLAR (1<<6)
115 #define ADC_GAIN_0 (0<<4)
116 #define ADC_GAIN_1 (1<<4)
117 #define ADC_GAIN_2 (2<<4)
118 #define ADC_GAIN_3 (3<<4)
119 #define ME_READ_AD_FIFO 0x0010 /* R | - */
120 #define ME_DAC_CONTROL 0x0012 /* - | W */
121 #define DAC_UNIPOLAR_D (0<<4)
122 #define DAC_BIPOLAR_D (1<<4)
123 #define DAC_UNIPOLAR_C (0<<5)
124 #define DAC_BIPOLAR_C (1<<5)
125 #define DAC_UNIPOLAR_B (0<<6)
126 #define DAC_BIPOLAR_B (1<<6)
127 #define DAC_UNIPOLAR_A (0<<7)
128 #define DAC_BIPOLAR_A (1<<7)
129 #define DAC_GAIN_0_D (0<<8)
130 #define DAC_GAIN_1_D (1<<8)
131 #define DAC_GAIN_0_C (0<<9)
132 #define DAC_GAIN_1_C (1<<9)
133 #define DAC_GAIN_0_B (0<<10)
134 #define DAC_GAIN_1_B (1<<10)
135 #define DAC_GAIN_0_A (0<<11)
136 #define DAC_GAIN_1_A (1<<11)
137 #define ME_DAC_CONTROL_UPDATE 0x0012 /* R | - */
138 #define ME_DAC_DATA_A 0x0014 /* - | W */
139 #define ME_DAC_DATA_B 0x0016 /* - | W */
140 #define ME_DAC_DATA_C 0x0018 /* - | W */
141 #define ME_DAC_DATA_D 0x001A /* - | W */
142 #define ME_COUNTER_ENDDATA_A 0x001C /* - | W */
143 #define ME_COUNTER_ENDDATA_B 0x001E /* - | W */
144 #define ME_COUNTER_STARTDATA_A 0x0020 /* - | W */
145 #define ME_COUNTER_VALUE_A 0x0020 /* R | - */
146 #define ME_COUNTER_STARTDATA_B 0x0022 /* - | W */
147 #define ME_COUNTER_VALUE_B 0x0022 /* R | - */
148
149 /* Function prototypes */
150 static int me_attach(struct comedi_device *dev, struct comedi_devconfig *it);
151 static int me_detach(struct comedi_device *dev);
152
153 static const struct comedi_lrange me2000_ai_range = {
154 8,
155 {
156 BIP_RANGE(10),
157 BIP_RANGE(5),
158 BIP_RANGE(2.5),
159 BIP_RANGE(1.25),
160 UNI_RANGE(10),
161 UNI_RANGE(5),
162 UNI_RANGE(2.5),
163 UNI_RANGE(1.25)
164 }
165 };
166
167 static const struct comedi_lrange me2600_ai_range = {
168 8,
169 {
170 BIP_RANGE(10),
171 BIP_RANGE(5),
172 BIP_RANGE(2.5),
173 BIP_RANGE(1.25),
174 UNI_RANGE(10),
175 UNI_RANGE(5),
176 UNI_RANGE(2.5),
177 UNI_RANGE(1.25)
178 }
179 };
180
181 static const struct comedi_lrange me2600_ao_range = {
182 3,
183 {
184 BIP_RANGE(10),
185 BIP_RANGE(5),
186 UNI_RANGE(10)
187 }
188 };
189
190 static DEFINE_PCI_DEVICE_TABLE(me_pci_table) = {
191 {
192 PCI_VENDOR_ID_MEILHAUS, ME2600_DEVICE_ID, PCI_ANY_ID,
193 PCI_ANY_ID, 0, 0, 0}, {
194 PCI_VENDOR_ID_MEILHAUS, ME2000_DEVICE_ID, PCI_ANY_ID,
195 PCI_ANY_ID, 0, 0, 0}, {
196 0}
197 };
198
199 MODULE_DEVICE_TABLE(pci, me_pci_table);
200
201 /* Board specification structure */
202 struct me_board {
203 const char *name; /* driver name */
204 int device_id;
205 int ao_channel_nbr; /* DA config */
206 int ao_resolution;
207 int ao_resolution_mask;
208 const struct comedi_lrange *ao_range_list;
209 int ai_channel_nbr; /* AD config */
210 int ai_resolution;
211 int ai_resolution_mask;
212 const struct comedi_lrange *ai_range_list;
213 int dio_channel_nbr; /* DIO config */
214 };
215
216 static const struct me_board me_boards[] = {
217 {
218 /* -- ME-2600i -- */
219 .name = ME_DRIVER_NAME,
220 .device_id = ME2600_DEVICE_ID,
221 /* Analog Output */
222 .ao_channel_nbr = 4,
223 .ao_resolution = 12,
224 .ao_resolution_mask = 0x0fff,
225 .ao_range_list = &me2600_ao_range,
226 .ai_channel_nbr = 16,
227 /* Analog Input */
228 .ai_resolution = 12,
229 .ai_resolution_mask = 0x0fff,
230 .ai_range_list = &me2600_ai_range,
231 .dio_channel_nbr = 32,
232 },
233 {
234 /* -- ME-2000i -- */
235 .name = ME_DRIVER_NAME,
236 .device_id = ME2000_DEVICE_ID,
237 /* Analog Output */
238 .ao_channel_nbr = 0,
239 .ao_resolution = 0,
240 .ao_resolution_mask = 0,
241 .ao_range_list = NULL,
242 .ai_channel_nbr = 16,
243 /* Analog Input */
244 .ai_resolution = 12,
245 .ai_resolution_mask = 0x0fff,
246 .ai_range_list = &me2000_ai_range,
247 .dio_channel_nbr = 32,
248 }
249 };
250
251 #define me_board_nbr (sizeof(me_boards)/sizeof(struct me_board))
252
253 static struct comedi_driver me_driver = {
254 .driver_name = ME_DRIVER_NAME,
255 .module = THIS_MODULE,
256 .attach = me_attach,
257 .detach = me_detach,
258 };
259
260 static int __devinit me_driver_pci_probe(struct pci_dev *dev,
261 const struct pci_device_id *ent)
262 {
263 return comedi_pci_auto_config(dev, me_driver.driver_name);
264 }
265
266 static void __devexit me_driver_pci_remove(struct pci_dev *dev)
267 {
268 comedi_pci_auto_unconfig(dev);
269 }
270
271 static struct pci_driver me_driver_pci_driver = {
272 .id_table = me_pci_table,
273 .probe = &me_driver_pci_probe,
274 .remove = __devexit_p(&me_driver_pci_remove)
275 };
276
277 static int __init me_driver_init_module(void)
278 {
279 int retval;
280
281 retval = comedi_driver_register(&me_driver);
282 if (retval < 0)
283 return retval;
284
285 me_driver_pci_driver.name = (char *)me_driver.driver_name;
286 return pci_register_driver(&me_driver_pci_driver);
287 }
288
289 static void __exit me_driver_cleanup_module(void)
290 {
291 pci_unregister_driver(&me_driver_pci_driver);
292 comedi_driver_unregister(&me_driver);
293 }
294
295 module_init(me_driver_init_module);
296 module_exit(me_driver_cleanup_module);
297
298 /* Private data structure */
299 struct me_private_data {
300 struct pci_dev *pci_device;
301 void __iomem *plx_regbase; /* PLX configuration base address */
302 void __iomem *me_regbase; /* Base address of the Meilhaus card */
303 unsigned long plx_regbase_size; /* Size of PLX configuration space */
304 unsigned long me_regbase_size; /* Size of Meilhaus space */
305
306 unsigned short control_1; /* Mirror of CONTROL_1 register */
307 unsigned short control_2; /* Mirror of CONTROL_2 register */
308 unsigned short dac_control; /* Mirror of the DAC_CONTROL register */
309 int ao_readback[4]; /* Mirror of analog output data */
310 };
311
312 #define dev_private ((struct me_private_data *)dev->private)
313
314 /*
315 * ------------------------------------------------------------------
316 *
317 * Helpful functions
318 *
319 * ------------------------------------------------------------------
320 */
321 static inline void sleep(unsigned sec)
322 {
323 current->state = TASK_INTERRUPTIBLE;
324 schedule_timeout(sec * HZ);
325 }
326
327 /*
328 * ------------------------------------------------------------------
329 *
330 * DIGITAL INPUT/OUTPUT SECTION
331 *
332 * ------------------------------------------------------------------
333 */
334 static int me_dio_insn_config(struct comedi_device *dev,
335 struct comedi_subdevice *s,
336 struct comedi_insn *insn, unsigned int *data)
337 {
338 int bits;
339 int mask = 1 << CR_CHAN(insn->chanspec);
340
341 /* calculate port */
342 if (mask & 0x0000ffff) { /* Port A in use */
343 bits = 0x0000ffff;
344
345 /* Enable Port A */
346 dev_private->control_2 |= ENABLE_PORT_A;
347 writew(dev_private->control_2,
348 dev_private->me_regbase + ME_CONTROL_2);
349 } else { /* Port B in use */
350
351 bits = 0xffff0000;
352
353 /* Enable Port B */
354 dev_private->control_2 |= ENABLE_PORT_B;
355 writew(dev_private->control_2,
356 dev_private->me_regbase + ME_CONTROL_2);
357 }
358
359 if (data[0]) {
360 /* Config port as output */
361 s->io_bits |= bits;
362 } else {
363 /* Config port as input */
364 s->io_bits &= ~bits;
365 }
366
367 return 1;
368 }
369
370 /* Digital instant input/outputs */
371 static int me_dio_insn_bits(struct comedi_device *dev,
372 struct comedi_subdevice *s,
373 struct comedi_insn *insn, unsigned int *data)
374 {
375 unsigned int mask = data[0];
376 s->state &= ~mask;
377 s->state |= (mask & data[1]);
378
379 mask &= s->io_bits;
380 if (mask & 0x0000ffff) { /* Port A */
381 writew((s->state & 0xffff),
382 dev_private->me_regbase + ME_DIO_PORT_A);
383 } else {
384 data[1] &= ~0x0000ffff;
385 data[1] |= readw(dev_private->me_regbase + ME_DIO_PORT_A);
386 }
387
388 if (mask & 0xffff0000) { /* Port B */
389 writew(((s->state >> 16) & 0xffff),
390 dev_private->me_regbase + ME_DIO_PORT_B);
391 } else {
392 data[1] &= ~0xffff0000;
393 data[1] |= readw(dev_private->me_regbase + ME_DIO_PORT_B) << 16;
394 }
395
396 return 2;
397 }
398
399 /*
400 * ------------------------------------------------------------------
401 *
402 * ANALOG INPUT SECTION
403 *
404 * ------------------------------------------------------------------
405 */
406
407 /* Analog instant input */
408 static int me_ai_insn_read(struct comedi_device *dev,
409 struct comedi_subdevice *subdevice,
410 struct comedi_insn *insn, unsigned int *data)
411 {
412 unsigned short value;
413 int chan = CR_CHAN((&insn->chanspec)[0]);
414 int rang = CR_RANGE((&insn->chanspec)[0]);
415 int aref = CR_AREF((&insn->chanspec)[0]);
416 int i;
417
418 /* stop any running conversion */
419 dev_private->control_1 &= 0xFFFC;
420 writew(dev_private->control_1, dev_private->me_regbase + ME_CONTROL_1);
421
422 /* clear chanlist and ad fifo */
423 dev_private->control_2 &= ~(ENABLE_ADFIFO | ENABLE_CHANLIST);
424 writew(dev_private->control_2, dev_private->me_regbase + ME_CONTROL_2);
425
426 /* reset any pending interrupt */
427 writew(0x00, dev_private->me_regbase + ME_RESET_INTERRUPT);
428
429 /* enable the chanlist and ADC fifo */
430 dev_private->control_2 |= (ENABLE_ADFIFO | ENABLE_CHANLIST);
431 writew(dev_private->control_2, dev_private->me_regbase + ME_CONTROL_2);
432
433 /* write to channel list fifo */
434 /* b3:b0 are the channel number */
435 value = chan & 0x0f;
436 /* b5:b4 are the channel gain */
437 value |= (rang & 0x03) << 4;
438 /* b6 channel polarity */
439 value |= (rang & 0x04) << 4;
440 /* b7 single or differential */
441 value |= ((aref & AREF_DIFF) ? 0x80 : 0);
442 writew(value & 0xff, dev_private->me_regbase + ME_CHANNEL_LIST);
443
444 /* set ADC mode to software trigger */
445 dev_private->control_1 |= SOFTWARE_TRIGGERED_ADC;
446 writew(dev_private->control_1, dev_private->me_regbase + ME_CONTROL_1);
447
448 /* start conversion by reading from ADC_START */
449 readw(dev_private->me_regbase + ME_ADC_START);
450
451 /* wait for ADC fifo not empty flag */
452 for (i = 100000; i > 0; i--)
453 if (!(readw(dev_private->me_regbase + ME_STATUS) & 0x0004))
454 break;
455
456 /* get value from ADC fifo */
457 if (i) {
458 data[0] =
459 (readw(dev_private->me_regbase +
460 ME_READ_AD_FIFO) ^ 0x800) & 0x0FFF;
461 } else {
462 printk(KERN_ERR "comedi%d: Cannot get single value\n",
463 dev->minor);
464 return -EIO;
465 }
466
467 /* stop any running conversion */
468 dev_private->control_1 &= 0xFFFC;
469 writew(dev_private->control_1, dev_private->me_regbase + ME_CONTROL_1);
470
471 return 1;
472 }
473
474 /*
475 * ------------------------------------------------------------------
476 *
477 * HARDWARE TRIGGERED ANALOG INPUT SECTION
478 *
479 * ------------------------------------------------------------------
480 */
481
482 /* Cancel analog input autoscan */
483 static int me_ai_cancel(struct comedi_device *dev, struct comedi_subdevice *s)
484 {
485 /* disable interrupts */
486
487 /* stop any running conversion */
488 dev_private->control_1 &= 0xFFFC;
489 writew(dev_private->control_1, dev_private->me_regbase + ME_CONTROL_1);
490
491 return 0;
492 }
493
494 /* Test analog input command */
495 static int me_ai_do_cmd_test(struct comedi_device *dev,
496 struct comedi_subdevice *s, struct comedi_cmd *cmd)
497 {
498 return 0;
499 }
500
501 /* Analog input command */
502 static int me_ai_do_cmd(struct comedi_device *dev,
503 struct comedi_subdevice *subdevice)
504 {
505 return 0;
506 }
507
508 /*
509 * ------------------------------------------------------------------
510 *
511 * ANALOG OUTPUT SECTION
512 *
513 * ------------------------------------------------------------------
514 */
515
516 /* Analog instant output */
517 static int me_ao_insn_write(struct comedi_device *dev,
518 struct comedi_subdevice *s,
519 struct comedi_insn *insn, unsigned int *data)
520 {
521 int chan;
522 int rang;
523 int i;
524
525 /* Enable all DAC */
526 dev_private->control_2 |= ENABLE_DAC;
527 writew(dev_private->control_2, dev_private->me_regbase + ME_CONTROL_2);
528
529 /* and set DAC to "buffered" mode */
530 dev_private->control_2 |= BUFFERED_DAC;
531 writew(dev_private->control_2, dev_private->me_regbase + ME_CONTROL_2);
532
533 /* Set dac-control register */
534 for (i = 0; i < insn->n; i++) {
535 chan = CR_CHAN((&insn->chanspec)[i]);
536 rang = CR_RANGE((&insn->chanspec)[i]);
537
538 /* clear bits for this channel */
539 dev_private->dac_control &= ~(0x0880 >> chan);
540 if (rang == 0)
541 dev_private->dac_control |=
542 ((DAC_BIPOLAR_A | DAC_GAIN_1_A) >> chan);
543 else if (rang == 1)
544 dev_private->dac_control |=
545 ((DAC_BIPOLAR_A | DAC_GAIN_0_A) >> chan);
546 }
547 writew(dev_private->dac_control,
548 dev_private->me_regbase + ME_DAC_CONTROL);
549
550 /* Update dac-control register */
551 readw(dev_private->me_regbase + ME_DAC_CONTROL_UPDATE);
552
553 /* Set data register */
554 for (i = 0; i < insn->n; i++) {
555 chan = CR_CHAN((&insn->chanspec)[i]);
556 writew((data[0] & s->maxdata),
557 dev_private->me_regbase + ME_DAC_DATA_A + (chan << 1));
558 dev_private->ao_readback[chan] = (data[0] & s->maxdata);
559 }
560
561 /* Update dac with data registers */
562 readw(dev_private->me_regbase + ME_DAC_UPDATE);
563
564 return i;
565 }
566
567 /* Analog output readback */
568 static int me_ao_insn_read(struct comedi_device *dev,
569 struct comedi_subdevice *s, struct comedi_insn *insn,
570 unsigned int *data)
571 {
572 int i;
573
574 for (i = 0; i < insn->n; i++) {
575 data[i] =
576 dev_private->ao_readback[CR_CHAN((&insn->chanspec)[i])];
577 }
578
579 return 1;
580 }
581
582 /*
583 * ------------------------------------------------------------------
584 *
585 * INITIALISATION SECTION
586 *
587 * ------------------------------------------------------------------
588 */
589
590 /* Xilinx firmware download for card: ME-2600i */
591 static int me2600_xilinx_download(struct comedi_device *dev,
592 unsigned char *me2600_firmware,
593 unsigned int length)
594 {
595 unsigned int value;
596 unsigned int file_length;
597 unsigned int i;
598
599 /* disable irq's on PLX */
600 writel(0x00, dev_private->plx_regbase + PLX_INTCSR);
601
602 /* First, make a dummy read to reset xilinx */
603 value = readw(dev_private->me_regbase + XILINX_DOWNLOAD_RESET);
604
605 /* Wait until reset is over */
606 sleep(1);
607
608 /* Write a dummy value to Xilinx */
609 writeb(0x00, dev_private->me_regbase + 0x0);
610 sleep(1);
611
612 /*
613 * Format of the firmware
614 * Build longs from the byte-wise coded header
615 * Byte 1-3: length of the array
616 * Byte 4-7: version
617 * Byte 8-11: date
618 * Byte 12-15: reserved
619 */
620 if (length < 16)
621 return -EINVAL;
622 file_length = (((unsigned int)me2600_firmware[0] & 0xff) << 24) +
623 (((unsigned int)me2600_firmware[1] & 0xff) << 16) +
624 (((unsigned int)me2600_firmware[2] & 0xff) << 8) +
625 ((unsigned int)me2600_firmware[3] & 0xff);
626
627 /*
628 * Loop for writing firmware byte by byte to xilinx
629 * Firmware data start at offfset 16
630 */
631 for (i = 0; i < file_length; i++)
632 writeb((me2600_firmware[16 + i] & 0xff),
633 dev_private->me_regbase + 0x0);
634
635 /* Write 5 dummy values to xilinx */
636 for (i = 0; i < 5; i++)
637 writeb(0x00, dev_private->me_regbase + 0x0);
638
639 /* Test if there was an error during download -> INTB was thrown */
640 value = readl(dev_private->plx_regbase + PLX_INTCSR);
641 if (value & 0x20) {
642 /* Disable interrupt */
643 writel(0x00, dev_private->plx_regbase + PLX_INTCSR);
644 printk(KERN_ERR "comedi%d: Xilinx download failed\n",
645 dev->minor);
646 return -EIO;
647 }
648
649 /* Wait until the Xilinx is ready for real work */
650 sleep(1);
651
652 /* Enable PLX-Interrupts */
653 writel(0x43, dev_private->plx_regbase + PLX_INTCSR);
654
655 return 0;
656 }
657
658 /* Reset device */
659 static int me_reset(struct comedi_device *dev)
660 {
661 /* Reset board */
662 writew(0x00, dev_private->me_regbase + ME_CONTROL_1);
663 writew(0x00, dev_private->me_regbase + ME_CONTROL_2);
664 writew(0x00, dev_private->me_regbase + ME_RESET_INTERRUPT);
665 writew(0x00, dev_private->me_regbase + ME_DAC_CONTROL);
666
667 /* Save values in the board context */
668 dev_private->dac_control = 0;
669 dev_private->control_1 = 0;
670 dev_private->control_2 = 0;
671
672 return 0;
673 }
674
675 /*
676 * Attach
677 *
678 * - Register PCI device
679 * - Declare device driver capability
680 */
681 static int me_attach(struct comedi_device *dev, struct comedi_devconfig *it)
682 {
683 struct pci_dev *pci_device;
684 struct comedi_subdevice *subdevice;
685 struct me_board *board;
686 resource_size_t plx_regbase_tmp;
687 unsigned long plx_regbase_size_tmp;
688 resource_size_t me_regbase_tmp;
689 unsigned long me_regbase_size_tmp;
690 resource_size_t swap_regbase_tmp;
691 unsigned long swap_regbase_size_tmp;
692 resource_size_t regbase_tmp;
693 int result, error, i;
694
695 /* Allocate private memory */
696 if (alloc_private(dev, sizeof(struct me_private_data)) < 0)
697 return -ENOMEM;
698
699 /* Probe the device to determine what device in the series it is. */
700 for (pci_device = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, NULL);
701 pci_device != NULL;
702 pci_device = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, pci_device)) {
703 if (pci_device->vendor == PCI_VENDOR_ID_MEILHAUS) {
704 for (i = 0; i < me_board_nbr; i++) {
705 if (me_boards[i].device_id ==
706 pci_device->device) {
707 /*
708 * was a particular bus/slot requested?
709 */
710 if ((it->options[0] != 0)
711 || (it->options[1] != 0)) {
712 /*
713 * are we on the wrong bus/slot?
714 */
715 if (pci_device->bus->number !=
716 it->options[0]
717 ||
718 PCI_SLOT(pci_device->devfn)
719 != it->options[1]) {
720 continue;
721 }
722 }
723
724 dev->board_ptr = me_boards + i;
725 board =
726 (struct me_board *)dev->board_ptr;
727 dev_private->pci_device = pci_device;
728 goto found;
729 }
730 }
731 }
732 }
733
734 printk(KERN_ERR
735 "comedi%d: no supported board found! (req. bus/slot : %d/%d)\n",
736 dev->minor, it->options[0], it->options[1]);
737 return -EIO;
738
739 found:
740 printk(KERN_INFO "comedi%d: found %s at PCI bus %d, slot %d\n",
741 dev->minor, me_boards[i].name,
742 pci_device->bus->number, PCI_SLOT(pci_device->devfn));
743
744 /* Enable PCI device and request PCI regions */
745 if (comedi_pci_enable(pci_device, ME_DRIVER_NAME) < 0) {
746 printk(KERN_ERR "comedi%d: Failed to enable PCI device and "
747 "request regions\n", dev->minor);
748 return -EIO;
749 }
750
751 /* Set data in device structure */
752 dev->board_name = board->name;
753
754 /* Read PLX register base address [PCI_BASE_ADDRESS #0]. */
755 plx_regbase_tmp = pci_resource_start(pci_device, 0);
756 plx_regbase_size_tmp = pci_resource_len(pci_device, 0);
757 dev_private->plx_regbase =
758 ioremap(plx_regbase_tmp, plx_regbase_size_tmp);
759 dev_private->plx_regbase_size = plx_regbase_size_tmp;
760 if (!dev_private->plx_regbase) {
761 printk("comedi%d: Failed to remap I/O memory\n", dev->minor);
762 return -ENOMEM;
763 }
764
765 /* Read Swap base address [PCI_BASE_ADDRESS #5]. */
766
767 swap_regbase_tmp = pci_resource_start(pci_device, 5);
768 swap_regbase_size_tmp = pci_resource_len(pci_device, 5);
769
770 if (!swap_regbase_tmp)
771 printk(KERN_ERR "comedi%d: Swap not present\n", dev->minor);
772
773 /*---------------------------------------------- Workaround start ---*/
774 if (plx_regbase_tmp & 0x0080) {
775 printk(KERN_ERR "comedi%d: PLX-Bug detected\n", dev->minor);
776
777 if (swap_regbase_tmp) {
778 regbase_tmp = plx_regbase_tmp;
779 plx_regbase_tmp = swap_regbase_tmp;
780 swap_regbase_tmp = regbase_tmp;
781
782 result = pci_write_config_dword(pci_device,
783 PCI_BASE_ADDRESS_0,
784 plx_regbase_tmp);
785 if (result != PCIBIOS_SUCCESSFUL)
786 return -EIO;
787
788 result = pci_write_config_dword(pci_device,
789 PCI_BASE_ADDRESS_5,
790 swap_regbase_tmp);
791 if (result != PCIBIOS_SUCCESSFUL)
792 return -EIO;
793 } else {
794 plx_regbase_tmp -= 0x80;
795 result = pci_write_config_dword(pci_device,
796 PCI_BASE_ADDRESS_0,
797 plx_regbase_tmp);
798 if (result != PCIBIOS_SUCCESSFUL)
799 return -EIO;
800 }
801 }
802 /*--------------------------------------------- Workaround end -----*/
803
804 /* Read Meilhaus register base address [PCI_BASE_ADDRESS #2]. */
805
806 me_regbase_tmp = pci_resource_start(pci_device, 2);
807 me_regbase_size_tmp = pci_resource_len(pci_device, 2);
808 dev_private->me_regbase_size = me_regbase_size_tmp;
809 dev_private->me_regbase = ioremap(me_regbase_tmp, me_regbase_size_tmp);
810 if (!dev_private->me_regbase) {
811 printk(KERN_ERR "comedi%d: Failed to remap I/O memory\n",
812 dev->minor);
813 return -ENOMEM;
814 }
815 /* Download firmware and reset card */
816 if (board->device_id == ME2600_DEVICE_ID) {
817 unsigned char *aux_data;
818 int aux_len;
819
820 aux_data = comedi_aux_data(it->options, 0);
821 aux_len = it->options[COMEDI_DEVCONF_AUX_DATA_LENGTH];
822
823 if (!aux_data || aux_len < 1) {
824 comedi_error(dev, "You must provide me2600 firmware "
825 "using the --init-data option of "
826 "comedi_config");
827 return -EINVAL;
828 }
829 me2600_xilinx_download(dev, aux_data, aux_len);
830 }
831
832 me_reset(dev);
833
834 /* device driver capabilities */
835 error = alloc_subdevices(dev, 3);
836 if (error < 0)
837 return error;
838
839 subdevice = dev->subdevices + 0;
840 subdevice->type = COMEDI_SUBD_AI;
841 subdevice->subdev_flags = SDF_READABLE | SDF_COMMON | SDF_CMD_READ;
842 subdevice->n_chan = board->ai_channel_nbr;
843 subdevice->maxdata = board->ai_resolution_mask;
844 subdevice->len_chanlist = board->ai_channel_nbr;
845 subdevice->range_table = board->ai_range_list;
846 subdevice->cancel = me_ai_cancel;
847 subdevice->insn_read = me_ai_insn_read;
848 subdevice->do_cmdtest = me_ai_do_cmd_test;
849 subdevice->do_cmd = me_ai_do_cmd;
850
851 subdevice = dev->subdevices + 1;
852 subdevice->type = COMEDI_SUBD_AO;
853 subdevice->subdev_flags = SDF_WRITEABLE | SDF_COMMON;
854 subdevice->n_chan = board->ao_channel_nbr;
855 subdevice->maxdata = board->ao_resolution_mask;
856 subdevice->len_chanlist = board->ao_channel_nbr;
857 subdevice->range_table = board->ao_range_list;
858 subdevice->insn_read = me_ao_insn_read;
859 subdevice->insn_write = me_ao_insn_write;
860
861 subdevice = dev->subdevices + 2;
862 subdevice->type = COMEDI_SUBD_DIO;
863 subdevice->subdev_flags = SDF_READABLE | SDF_WRITEABLE;
864 subdevice->n_chan = board->dio_channel_nbr;
865 subdevice->maxdata = 1;
866 subdevice->len_chanlist = board->dio_channel_nbr;
867 subdevice->range_table = &range_digital;
868 subdevice->insn_bits = me_dio_insn_bits;
869 subdevice->insn_config = me_dio_insn_config;
870 subdevice->io_bits = 0;
871
872 printk(KERN_INFO "comedi%d: " ME_DRIVER_NAME " attached.\n",
873 dev->minor);
874 return 0;
875 }
876
877 /* Detach */
878 static int me_detach(struct comedi_device *dev)
879 {
880 if (dev_private) {
881 if (dev_private->me_regbase) {
882 me_reset(dev);
883 iounmap(dev_private->me_regbase);
884 }
885 if (dev_private->plx_regbase)
886 iounmap(dev_private->plx_regbase);
887 if (dev_private->pci_device) {
888 if (dev_private->plx_regbase_size)
889 comedi_pci_disable(dev_private->pci_device);
890
891 pci_dev_put(dev_private->pci_device);
892 }
893 }
894 return 0;
895 }
896
897 MODULE_AUTHOR("Comedi http://www.comedi.org");
898 MODULE_DESCRIPTION("Comedi low-level driver");
899 MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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