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1 | /* | |
2 | comedi/drivers/cb_pcidas.c | |
3 | ||
4 | Developed by Ivan Martinez and Frank Mori Hess, with valuable help from | |
5 | David Schleef and the rest of the Comedi developers comunity. | |
6 | ||
7 | Copyright (C) 2001-2003 Ivan Martinez <imr@oersted.dtu.dk> | |
8 | Copyright (C) 2001,2002 Frank Mori Hess <fmhess@users.sourceforge.net> | |
9 | ||
10 | COMEDI - Linux Control and Measurement Device Interface | |
11 | Copyright (C) 1997-8 David A. Schleef <ds@schleef.org> | |
12 | ||
13 | This program is free software; you can redistribute it and/or modify | |
14 | it under the terms of the GNU General Public License as published by | |
15 | the Free Software Foundation; either version 2 of the License, or | |
16 | (at your option) any later version. | |
17 | ||
18 | This program is distributed in the hope that it will be useful, | |
19 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | GNU General Public License for more details. | |
22 | ||
23 | You should have received a copy of the GNU General Public License | |
24 | along with this program; if not, write to the Free Software | |
25 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
26 | ||
27 | ************************************************************************ | |
28 | */ | |
29 | /* | |
30 | Driver: cb_pcidas | |
31 | Description: MeasurementComputing PCI-DAS series with the AMCC S5933 PCI controller | |
32 | Author: Ivan Martinez <imr@oersted.dtu.dk>, | |
33 | Frank Mori Hess <fmhess@users.sourceforge.net> | |
34 | Updated: 2003-3-11 | |
35 | Devices: [Measurement Computing] PCI-DAS1602/16 (cb_pcidas), | |
36 | PCI-DAS1602/16jr, PCI-DAS1602/12, PCI-DAS1200, PCI-DAS1200jr, | |
37 | PCI-DAS1000, PCI-DAS1001, PCI_DAS1002 | |
38 | ||
39 | Status: | |
40 | There are many reports of the driver being used with most of the | |
41 | supported cards. Despite no detailed log is maintained, it can | |
42 | be said that the driver is quite tested and stable. | |
43 | ||
44 | The boards may be autocalibrated using the comedi_calibrate | |
45 | utility. | |
46 | ||
47 | Configuration options: | |
48 | [0] - PCI bus of device (optional) | |
49 | [1] - PCI slot of device (optional) | |
50 | If bus/slot is not specified, the first supported | |
51 | PCI device found will be used. | |
52 | ||
53 | For commands, the scanned channels must be consecutive | |
54 | (i.e. 4-5-6-7, 2-3-4,...), and must all have the same | |
55 | range and aref. | |
56 | ||
57 | AI Triggering: | |
58 | For start_src == TRIG_EXT, the A/D EXTERNAL TRIGGER IN (pin 45) is used. | |
59 | For 1602 series, the start_arg is interpreted as follows: | |
60 | start_arg == 0 => gated trigger (level high) | |
61 | start_arg == CR_INVERT => gated trigger (level low) | |
62 | start_arg == CR_EDGE => Rising edge | |
63 | start_arg == CR_EDGE | CR_INVERT => Falling edge | |
64 | For the other boards the trigger will be done on rising edge | |
65 | */ | |
66 | /* | |
67 | ||
68 | TODO: | |
69 | ||
70 | analog triggering on 1602 series | |
71 | */ | |
72 | ||
73 | #include "../comedidev.h" | |
74 | #include <linux/delay.h> | |
75 | #include <linux/interrupt.h> | |
76 | ||
77 | #include "8253.h" | |
78 | #include "8255.h" | |
79 | #include "amcc_s5933.h" | |
80 | #include "comedi_fc.h" | |
81 | ||
82 | #undef CB_PCIDAS_DEBUG /* disable debugging code */ | |
83 | /* #define CB_PCIDAS_DEBUG enable debugging code */ | |
84 | ||
85 | /* PCI vendor number of ComputerBoards/MeasurementComputing */ | |
86 | #define PCI_VENDOR_ID_CB 0x1307 | |
87 | #define TIMER_BASE 100 /* 10MHz master clock */ | |
88 | #define AI_BUFFER_SIZE 1024 /* maximum fifo size of any supported board */ | |
89 | #define AO_BUFFER_SIZE 1024 /* maximum fifo size of any supported board */ | |
90 | #define NUM_CHANNELS_8800 8 | |
91 | #define NUM_CHANNELS_7376 1 | |
92 | #define NUM_CHANNELS_8402 2 | |
93 | #define NUM_CHANNELS_DAC08 1 | |
94 | ||
95 | /* PCI-DAS base addresses */ | |
96 | ||
97 | /* indices of base address regions */ | |
98 | #define S5933_BADRINDEX 0 | |
99 | #define CONT_STAT_BADRINDEX 1 | |
100 | #define ADC_FIFO_BADRINDEX 2 | |
101 | #define PACER_BADRINDEX 3 | |
102 | #define AO_BADRINDEX 4 | |
103 | /* sizes of io regions */ | |
104 | #define CONT_STAT_SIZE 10 | |
105 | #define ADC_FIFO_SIZE 4 | |
106 | #define PACER_SIZE 12 | |
107 | #define AO_SIZE 4 | |
108 | ||
109 | /* Control/Status registers */ | |
110 | #define INT_ADCFIFO 0 /* INTERRUPT / ADC FIFO register */ | |
111 | #define INT_EOS 0x1 /* interrupt end of scan */ | |
112 | #define INT_FHF 0x2 /* interrupt fifo half full */ | |
113 | #define INT_FNE 0x3 /* interrupt fifo not empty */ | |
114 | #define INT_MASK 0x3 /* mask of interrupt select bits */ | |
115 | #define INTE 0x4 /* interrupt enable */ | |
116 | #define DAHFIE 0x8 /* dac half full interrupt enable */ | |
117 | #define EOAIE 0x10 /* end of acquisition interrupt enable */ | |
118 | #define DAHFI 0x20 /* dac half full read status / write interrupt clear */ | |
119 | #define EOAI 0x40 /* read end of acq. interrupt status / write clear */ | |
120 | #define INT 0x80 /* read interrupt status / write clear */ | |
121 | #define EOBI 0x200 /* read end of burst interrupt status */ | |
122 | #define ADHFI 0x400 /* read half-full interrupt status */ | |
123 | #define ADNEI 0x800 /* read fifo not empty interrupt latch status */ | |
124 | #define ADNE 0x1000 /* read, fifo not empty (realtime, not latched) status */ | |
125 | #define DAEMIE 0x1000 /* write, dac empty interrupt enable */ | |
126 | #define LADFUL 0x2000 /* read fifo overflow / write clear */ | |
127 | #define DAEMI 0x4000 /* dac fifo empty interrupt status / write clear */ | |
128 | ||
129 | #define ADCMUX_CONT 2 /* ADC CHANNEL MUX AND CONTROL register */ | |
130 | #define BEGIN_SCAN(x) ((x) & 0xf) | |
131 | #define END_SCAN(x) (((x) & 0xf) << 4) | |
132 | #define GAIN_BITS(x) (((x) & 0x3) << 8) | |
133 | #define UNIP 0x800 /* Analog front-end unipolar for range */ | |
134 | #define SE 0x400 /* Inputs in single-ended mode */ | |
135 | #define PACER_MASK 0x3000 /* pacer source bits */ | |
136 | #define PACER_INT 0x1000 /* internal pacer */ | |
137 | #define PACER_EXT_FALL 0x2000 /* external falling edge */ | |
138 | #define PACER_EXT_RISE 0x3000 /* external rising edge */ | |
139 | #define EOC 0x4000 /* adc not busy */ | |
140 | ||
141 | #define TRIG_CONTSTAT 4 /* TRIGGER CONTROL/STATUS register */ | |
142 | #define SW_TRIGGER 0x1 /* software start trigger */ | |
143 | #define EXT_TRIGGER 0x2 /* external start trigger */ | |
144 | #define ANALOG_TRIGGER 0x3 /* external analog trigger */ | |
145 | #define TRIGGER_MASK 0x3 /* mask of bits that determine start trigger */ | |
146 | #define TGPOL 0x04 /* invert the edge/level of the external trigger (1602 only) */ | |
147 | #define TGSEL 0x08 /* if set edge triggered, otherwise level trigerred (1602 only) */ | |
148 | #define TGEN 0x10 /* enable external start trigger */ | |
149 | #define BURSTE 0x20 /* burst mode enable */ | |
150 | #define XTRCL 0x80 /* clear external trigger */ | |
151 | ||
152 | #define CALIBRATION_REG 6 /* CALIBRATION register */ | |
153 | #define SELECT_8800_BIT 0x100 /* select 8800 caldac */ | |
154 | #define SELECT_TRIMPOT_BIT 0x200 /* select ad7376 trim pot */ | |
155 | #define SELECT_DAC08_BIT 0x400 /* select dac08 caldac */ | |
156 | #define CAL_SRC_BITS(x) (((x) & 0x7) << 11) | |
157 | #define CAL_EN_BIT 0x4000 /* read calibration source instead of analog input channel 0 */ | |
158 | #define SERIAL_DATA_IN_BIT 0x8000 /* serial data stream going to 8800 and 7376 */ | |
159 | ||
160 | #define DAC_CSR 0x8 /* dac control and status register */ | |
161 | enum dac_csr_bits { | |
162 | DACEN = 0x2, /* dac enable */ | |
163 | DAC_MODE_UPDATE_BOTH = 0x80, /* update both dacs when dac0 is written */ | |
164 | }; | |
165 | static inline unsigned int DAC_RANGE(unsigned int channel, unsigned int range) | |
166 | { | |
167 | return (range & 0x3) << (8 + 2 * (channel & 0x1)); | |
168 | } | |
169 | ||
170 | static inline unsigned int DAC_RANGE_MASK(unsigned int channel) | |
171 | { | |
172 | return 0x3 << (8 + 2 * (channel & 0x1)); | |
173 | }; | |
174 | ||
175 | /* bits for 1602 series only */ | |
176 | enum dac_csr_bits_1602 { | |
177 | DAC_EMPTY = 0x1, /* dac fifo empty, read, write clear */ | |
178 | DAC_START = 0x4, /* start/arm dac fifo operations */ | |
179 | DAC_PACER_MASK = 0x18, /* bits that set dac pacer source */ | |
180 | DAC_PACER_INT = 0x8, /* dac internal pacing */ | |
181 | DAC_PACER_EXT_FALL = 0x10, /* dac external pacing, falling edge */ | |
182 | DAC_PACER_EXT_RISE = 0x18, /* dac external pacing, rising edge */ | |
183 | }; | |
184 | static inline unsigned int DAC_CHAN_EN(unsigned int channel) | |
185 | { | |
186 | return 1 << (5 + (channel & 0x1)); /* enable channel 0 or 1 */ | |
187 | }; | |
188 | ||
189 | /* analog input fifo */ | |
190 | #define ADCDATA 0 /* ADC DATA register */ | |
191 | #define ADCFIFOCLR 2 /* ADC FIFO CLEAR */ | |
192 | ||
193 | /* pacer, counter, dio registers */ | |
194 | #define ADC8254 0 | |
195 | #define DIO_8255 4 | |
196 | #define DAC8254 8 | |
197 | ||
198 | /* analog output registers for 100x, 1200 series */ | |
199 | static inline unsigned int DAC_DATA_REG(unsigned int channel) | |
200 | { | |
201 | return 2 * (channel & 0x1); | |
202 | } | |
203 | ||
204 | /* analog output registers for 1602 series*/ | |
205 | #define DACDATA 0 /* DAC DATA register */ | |
206 | #define DACFIFOCLR 2 /* DAC FIFO CLEAR */ | |
207 | ||
208 | /* bit in hexadecimal representation of range index that indicates unipolar input range */ | |
209 | #define IS_UNIPOLAR 0x4 | |
210 | /* analog input ranges for most boards */ | |
211 | static const struct comedi_lrange cb_pcidas_ranges = { | |
212 | 8, | |
213 | { | |
214 | BIP_RANGE(10), | |
215 | BIP_RANGE(5), | |
216 | BIP_RANGE(2.5), | |
217 | BIP_RANGE(1.25), | |
218 | UNI_RANGE(10), | |
219 | UNI_RANGE(5), | |
220 | UNI_RANGE(2.5), | |
221 | UNI_RANGE(1.25) | |
222 | } | |
223 | }; | |
224 | ||
225 | /* pci-das1001 input ranges */ | |
226 | static const struct comedi_lrange cb_pcidas_alt_ranges = { | |
227 | 8, | |
228 | { | |
229 | BIP_RANGE(10), | |
230 | BIP_RANGE(1), | |
231 | BIP_RANGE(0.1), | |
232 | BIP_RANGE(0.01), | |
233 | UNI_RANGE(10), | |
234 | UNI_RANGE(1), | |
235 | UNI_RANGE(0.1), | |
236 | UNI_RANGE(0.01) | |
237 | } | |
238 | }; | |
239 | ||
240 | /* analog output ranges */ | |
241 | static const struct comedi_lrange cb_pcidas_ao_ranges = { | |
242 | 4, | |
243 | { | |
244 | BIP_RANGE(5), | |
245 | BIP_RANGE(10), | |
246 | UNI_RANGE(5), | |
247 | UNI_RANGE(10), | |
248 | } | |
249 | }; | |
250 | ||
251 | enum trimpot_model { | |
252 | AD7376, | |
253 | AD8402, | |
254 | }; | |
255 | ||
256 | struct cb_pcidas_board { | |
257 | const char *name; | |
258 | unsigned short device_id; | |
259 | int ai_se_chans; /* Inputs in single-ended mode */ | |
260 | int ai_diff_chans; /* Inputs in differential mode */ | |
261 | int ai_bits; /* analog input resolution */ | |
262 | int ai_speed; /* fastest conversion period in ns */ | |
263 | int ao_nchan; /* number of analog out channels */ | |
264 | int has_ao_fifo; /* analog output has fifo */ | |
265 | int ao_scan_speed; /* analog output speed for 1602 series (for a scan, not conversion) */ | |
266 | int fifo_size; /* number of samples fifo can hold */ | |
267 | const struct comedi_lrange *ranges; | |
268 | enum trimpot_model trimpot; | |
269 | unsigned has_dac08:1; | |
270 | unsigned has_ai_trig_gated:1; /* Tells if the AI trigger can be gated */ | |
271 | unsigned has_ai_trig_invert:1; /* Tells if the AI trigger can be inverted */ | |
272 | }; | |
273 | ||
274 | static const struct cb_pcidas_board cb_pcidas_boards[] = { | |
275 | { | |
276 | .name = "pci-das1602/16", | |
277 | .device_id = 0x1, | |
278 | .ai_se_chans = 16, | |
279 | .ai_diff_chans = 8, | |
280 | .ai_bits = 16, | |
281 | .ai_speed = 5000, | |
282 | .ao_nchan = 2, | |
283 | .has_ao_fifo = 1, | |
284 | .ao_scan_speed = 10000, | |
285 | .fifo_size = 512, | |
286 | .ranges = &cb_pcidas_ranges, | |
287 | .trimpot = AD8402, | |
288 | .has_dac08 = 1, | |
289 | .has_ai_trig_gated = 1, | |
290 | .has_ai_trig_invert = 1, | |
291 | }, | |
292 | { | |
293 | .name = "pci-das1200", | |
294 | .device_id = 0xF, | |
295 | .ai_se_chans = 16, | |
296 | .ai_diff_chans = 8, | |
297 | .ai_bits = 12, | |
298 | .ai_speed = 3200, | |
299 | .ao_nchan = 2, | |
300 | .has_ao_fifo = 0, | |
301 | .fifo_size = 1024, | |
302 | .ranges = &cb_pcidas_ranges, | |
303 | .trimpot = AD7376, | |
304 | .has_dac08 = 0, | |
305 | .has_ai_trig_gated = 0, | |
306 | .has_ai_trig_invert = 0, | |
307 | }, | |
308 | { | |
309 | .name = "pci-das1602/12", | |
310 | .device_id = 0x10, | |
311 | .ai_se_chans = 16, | |
312 | .ai_diff_chans = 8, | |
313 | .ai_bits = 12, | |
314 | .ai_speed = 3200, | |
315 | .ao_nchan = 2, | |
316 | .has_ao_fifo = 1, | |
317 | .ao_scan_speed = 4000, | |
318 | .fifo_size = 1024, | |
319 | .ranges = &cb_pcidas_ranges, | |
320 | .trimpot = AD7376, | |
321 | .has_dac08 = 0, | |
322 | .has_ai_trig_gated = 1, | |
323 | .has_ai_trig_invert = 1, | |
324 | }, | |
325 | { | |
326 | .name = "pci-das1200/jr", | |
327 | .device_id = 0x19, | |
328 | .ai_se_chans = 16, | |
329 | .ai_diff_chans = 8, | |
330 | .ai_bits = 12, | |
331 | .ai_speed = 3200, | |
332 | .ao_nchan = 0, | |
333 | .has_ao_fifo = 0, | |
334 | .fifo_size = 1024, | |
335 | .ranges = &cb_pcidas_ranges, | |
336 | .trimpot = AD7376, | |
337 | .has_dac08 = 0, | |
338 | .has_ai_trig_gated = 0, | |
339 | .has_ai_trig_invert = 0, | |
340 | }, | |
341 | { | |
342 | .name = "pci-das1602/16/jr", | |
343 | .device_id = 0x1C, | |
344 | .ai_se_chans = 16, | |
345 | .ai_diff_chans = 8, | |
346 | .ai_bits = 16, | |
347 | .ai_speed = 5000, | |
348 | .ao_nchan = 0, | |
349 | .has_ao_fifo = 0, | |
350 | .fifo_size = 512, | |
351 | .ranges = &cb_pcidas_ranges, | |
352 | .trimpot = AD8402, | |
353 | .has_dac08 = 1, | |
354 | .has_ai_trig_gated = 1, | |
355 | .has_ai_trig_invert = 1, | |
356 | }, | |
357 | { | |
358 | .name = "pci-das1000", | |
359 | .device_id = 0x4C, | |
360 | .ai_se_chans = 16, | |
361 | .ai_diff_chans = 8, | |
362 | .ai_bits = 12, | |
363 | .ai_speed = 4000, | |
364 | .ao_nchan = 0, | |
365 | .has_ao_fifo = 0, | |
366 | .fifo_size = 1024, | |
367 | .ranges = &cb_pcidas_ranges, | |
368 | .trimpot = AD7376, | |
369 | .has_dac08 = 0, | |
370 | .has_ai_trig_gated = 0, | |
371 | .has_ai_trig_invert = 0, | |
372 | }, | |
373 | { | |
374 | .name = "pci-das1001", | |
375 | .device_id = 0x1a, | |
376 | .ai_se_chans = 16, | |
377 | .ai_diff_chans = 8, | |
378 | .ai_bits = 12, | |
379 | .ai_speed = 6800, | |
380 | .ao_nchan = 2, | |
381 | .has_ao_fifo = 0, | |
382 | .fifo_size = 1024, | |
383 | .ranges = &cb_pcidas_alt_ranges, | |
384 | .trimpot = AD7376, | |
385 | .has_dac08 = 0, | |
386 | .has_ai_trig_gated = 0, | |
387 | .has_ai_trig_invert = 0, | |
388 | }, | |
389 | { | |
390 | .name = "pci-das1002", | |
391 | .device_id = 0x1b, | |
392 | .ai_se_chans = 16, | |
393 | .ai_diff_chans = 8, | |
394 | .ai_bits = 12, | |
395 | .ai_speed = 6800, | |
396 | .ao_nchan = 2, | |
397 | .has_ao_fifo = 0, | |
398 | .fifo_size = 1024, | |
399 | .ranges = &cb_pcidas_ranges, | |
400 | .trimpot = AD7376, | |
401 | .has_dac08 = 0, | |
402 | .has_ai_trig_gated = 0, | |
403 | .has_ai_trig_invert = 0, | |
404 | }, | |
405 | }; | |
406 | ||
407 | /* | |
408 | * Useful for shorthand access to the particular board structure | |
409 | */ | |
410 | #define thisboard ((const struct cb_pcidas_board *)dev->board_ptr) | |
411 | ||
412 | /* this structure is for data unique to this hardware driver. If | |
413 | several hardware drivers keep similar information in this structure, | |
414 | feel free to suggest moving the variable to the struct comedi_device struct. */ | |
415 | struct cb_pcidas_private { | |
416 | /* would be useful for a PCI device */ | |
417 | struct pci_dev *pci_dev; | |
418 | /* base addresses */ | |
419 | unsigned long s5933_config; | |
420 | unsigned long control_status; | |
421 | unsigned long adc_fifo; | |
422 | unsigned long pacer_counter_dio; | |
423 | unsigned long ao_registers; | |
424 | /* divisors of master clock for analog input pacing */ | |
425 | unsigned int divisor1; | |
426 | unsigned int divisor2; | |
427 | volatile unsigned int count; /* number of analog input samples remaining */ | |
428 | volatile unsigned int adc_fifo_bits; /* bits to write to interrupt/adcfifo register */ | |
429 | volatile unsigned int s5933_intcsr_bits; /* bits to write to amcc s5933 interrupt control/status register */ | |
430 | volatile unsigned int ao_control_bits; /* bits to write to ao control and status register */ | |
431 | short ai_buffer[AI_BUFFER_SIZE]; | |
432 | short ao_buffer[AO_BUFFER_SIZE]; | |
433 | /* divisors of master clock for analog output pacing */ | |
434 | unsigned int ao_divisor1; | |
435 | unsigned int ao_divisor2; | |
436 | volatile unsigned int ao_count; /* number of analog output samples remaining */ | |
437 | int ao_value[2]; /* remember what the analog outputs are set to, to allow readback */ | |
438 | unsigned int caldac_value[NUM_CHANNELS_8800]; /* for readback of caldac */ | |
439 | unsigned int trimpot_value[NUM_CHANNELS_8402]; /* for readback of trimpot */ | |
440 | unsigned int dac08_value; | |
441 | unsigned int calibration_source; | |
442 | }; | |
443 | ||
444 | /* | |
445 | * most drivers define the following macro to make it easy to | |
446 | * access the private structure. | |
447 | */ | |
448 | #define devpriv ((struct cb_pcidas_private *)dev->private) | |
449 | ||
450 | static int trimpot_7376_write(struct comedi_device *dev, uint8_t value); | |
451 | static int trimpot_8402_write(struct comedi_device *dev, unsigned int channel, | |
452 | uint8_t value); | |
453 | static int nvram_read(struct comedi_device *dev, unsigned int address, | |
454 | uint8_t *data); | |
455 | ||
456 | static inline unsigned int cal_enable_bits(struct comedi_device *dev) | |
457 | { | |
458 | return CAL_EN_BIT | CAL_SRC_BITS(devpriv->calibration_source); | |
459 | } | |
460 | ||
461 | /* | |
462 | * "instructions" read/write data in "one-shot" or "software-triggered" | |
463 | * mode. | |
464 | */ | |
465 | static int cb_pcidas_ai_rinsn(struct comedi_device *dev, | |
466 | struct comedi_subdevice *s, | |
467 | struct comedi_insn *insn, unsigned int *data) | |
468 | { | |
469 | int n, i; | |
470 | unsigned int bits; | |
471 | static const int timeout = 10000; | |
472 | int channel; | |
473 | /* enable calibration input if appropriate */ | |
474 | if (insn->chanspec & CR_ALT_SOURCE) { | |
475 | outw(cal_enable_bits(dev), | |
476 | devpriv->control_status + CALIBRATION_REG); | |
477 | channel = 0; | |
478 | } else { | |
479 | outw(0, devpriv->control_status + CALIBRATION_REG); | |
480 | channel = CR_CHAN(insn->chanspec); | |
481 | } | |
482 | /* set mux limits and gain */ | |
483 | bits = BEGIN_SCAN(channel) | | |
484 | END_SCAN(channel) | GAIN_BITS(CR_RANGE(insn->chanspec)); | |
485 | /* set unipolar/bipolar */ | |
486 | if (CR_RANGE(insn->chanspec) & IS_UNIPOLAR) | |
487 | bits |= UNIP; | |
488 | /* set singleended/differential */ | |
489 | if (CR_AREF(insn->chanspec) != AREF_DIFF) | |
490 | bits |= SE; | |
491 | outw(bits, devpriv->control_status + ADCMUX_CONT); | |
492 | ||
493 | /* clear fifo */ | |
494 | outw(0, devpriv->adc_fifo + ADCFIFOCLR); | |
495 | ||
496 | /* convert n samples */ | |
497 | for (n = 0; n < insn->n; n++) { | |
498 | /* trigger conversion */ | |
499 | outw(0, devpriv->adc_fifo + ADCDATA); | |
500 | ||
501 | /* wait for conversion to end */ | |
502 | /* return -ETIMEDOUT if there is a timeout */ | |
503 | for (i = 0; i < timeout; i++) { | |
504 | if (inw(devpriv->control_status + ADCMUX_CONT) & EOC) | |
505 | break; | |
506 | } | |
507 | if (i == timeout) | |
508 | return -ETIMEDOUT; | |
509 | ||
510 | /* read data */ | |
511 | data[n] = inw(devpriv->adc_fifo + ADCDATA); | |
512 | } | |
513 | ||
514 | /* return the number of samples read/written */ | |
515 | return n; | |
516 | } | |
517 | ||
518 | static int ai_config_calibration_source(struct comedi_device *dev, | |
519 | unsigned int *data) | |
520 | { | |
521 | static const int num_calibration_sources = 8; | |
522 | unsigned int source = data[1]; | |
523 | ||
524 | if (source >= num_calibration_sources) { | |
525 | dev_err(dev->class_dev, "invalid calibration source: %i\n", | |
526 | source); | |
527 | return -EINVAL; | |
528 | } | |
529 | ||
530 | devpriv->calibration_source = source; | |
531 | ||
532 | return 2; | |
533 | } | |
534 | ||
535 | static int ai_config_insn(struct comedi_device *dev, struct comedi_subdevice *s, | |
536 | struct comedi_insn *insn, unsigned int *data) | |
537 | { | |
538 | int id = data[0]; | |
539 | ||
540 | switch (id) { | |
541 | case INSN_CONFIG_ALT_SOURCE: | |
542 | return ai_config_calibration_source(dev, data); | |
543 | break; | |
544 | default: | |
545 | return -EINVAL; | |
546 | break; | |
547 | } | |
548 | return -EINVAL; | |
549 | } | |
550 | ||
551 | /* analog output insn for pcidas-1000 and 1200 series */ | |
552 | static int cb_pcidas_ao_nofifo_winsn(struct comedi_device *dev, | |
553 | struct comedi_subdevice *s, | |
554 | struct comedi_insn *insn, | |
555 | unsigned int *data) | |
556 | { | |
557 | int channel; | |
558 | unsigned long flags; | |
559 | ||
560 | /* set channel and range */ | |
561 | channel = CR_CHAN(insn->chanspec); | |
562 | spin_lock_irqsave(&dev->spinlock, flags); | |
563 | devpriv->ao_control_bits &= | |
564 | ~DAC_MODE_UPDATE_BOTH & ~DAC_RANGE_MASK(channel); | |
565 | devpriv->ao_control_bits |= | |
566 | DACEN | DAC_RANGE(channel, CR_RANGE(insn->chanspec)); | |
567 | outw(devpriv->ao_control_bits, devpriv->control_status + DAC_CSR); | |
568 | spin_unlock_irqrestore(&dev->spinlock, flags); | |
569 | ||
570 | /* remember value for readback */ | |
571 | devpriv->ao_value[channel] = data[0]; | |
572 | /* send data */ | |
573 | outw(data[0], devpriv->ao_registers + DAC_DATA_REG(channel)); | |
574 | ||
575 | return 1; | |
576 | } | |
577 | ||
578 | /* analog output insn for pcidas-1602 series */ | |
579 | static int cb_pcidas_ao_fifo_winsn(struct comedi_device *dev, | |
580 | struct comedi_subdevice *s, | |
581 | struct comedi_insn *insn, unsigned int *data) | |
582 | { | |
583 | int channel; | |
584 | unsigned long flags; | |
585 | ||
586 | /* clear dac fifo */ | |
587 | outw(0, devpriv->ao_registers + DACFIFOCLR); | |
588 | ||
589 | /* set channel and range */ | |
590 | channel = CR_CHAN(insn->chanspec); | |
591 | spin_lock_irqsave(&dev->spinlock, flags); | |
592 | devpriv->ao_control_bits &= | |
593 | ~DAC_CHAN_EN(0) & ~DAC_CHAN_EN(1) & ~DAC_RANGE_MASK(channel) & | |
594 | ~DAC_PACER_MASK; | |
595 | devpriv->ao_control_bits |= | |
596 | DACEN | DAC_RANGE(channel, | |
597 | CR_RANGE(insn-> | |
598 | chanspec)) | DAC_CHAN_EN(channel) | | |
599 | DAC_START; | |
600 | outw(devpriv->ao_control_bits, devpriv->control_status + DAC_CSR); | |
601 | spin_unlock_irqrestore(&dev->spinlock, flags); | |
602 | ||
603 | /* remember value for readback */ | |
604 | devpriv->ao_value[channel] = data[0]; | |
605 | /* send data */ | |
606 | outw(data[0], devpriv->ao_registers + DACDATA); | |
607 | ||
608 | return 1; | |
609 | } | |
610 | ||
611 | /* analog output readback insn */ | |
612 | /* XXX loses track of analog output value back after an analog ouput command is executed */ | |
613 | static int cb_pcidas_ao_readback_insn(struct comedi_device *dev, | |
614 | struct comedi_subdevice *s, | |
615 | struct comedi_insn *insn, | |
616 | unsigned int *data) | |
617 | { | |
618 | data[0] = devpriv->ao_value[CR_CHAN(insn->chanspec)]; | |
619 | ||
620 | return 1; | |
621 | } | |
622 | ||
623 | static int eeprom_read_insn(struct comedi_device *dev, | |
624 | struct comedi_subdevice *s, | |
625 | struct comedi_insn *insn, unsigned int *data) | |
626 | { | |
627 | uint8_t nvram_data; | |
628 | int retval; | |
629 | ||
630 | retval = nvram_read(dev, CR_CHAN(insn->chanspec), &nvram_data); | |
631 | if (retval < 0) | |
632 | return retval; | |
633 | ||
634 | data[0] = nvram_data; | |
635 | ||
636 | return 1; | |
637 | } | |
638 | ||
639 | static void write_calibration_bitstream(struct comedi_device *dev, | |
640 | unsigned int register_bits, | |
641 | unsigned int bitstream, | |
642 | unsigned int bitstream_length) | |
643 | { | |
644 | static const int write_delay = 1; | |
645 | unsigned int bit; | |
646 | ||
647 | for (bit = 1 << (bitstream_length - 1); bit; bit >>= 1) { | |
648 | if (bitstream & bit) | |
649 | register_bits |= SERIAL_DATA_IN_BIT; | |
650 | else | |
651 | register_bits &= ~SERIAL_DATA_IN_BIT; | |
652 | udelay(write_delay); | |
653 | outw(register_bits, devpriv->control_status + CALIBRATION_REG); | |
654 | } | |
655 | } | |
656 | ||
657 | static int caldac_8800_write(struct comedi_device *dev, unsigned int address, | |
658 | uint8_t value) | |
659 | { | |
660 | static const int num_caldac_channels = 8; | |
661 | static const int bitstream_length = 11; | |
662 | unsigned int bitstream = ((address & 0x7) << 8) | value; | |
663 | static const int caldac_8800_udelay = 1; | |
664 | ||
665 | if (address >= num_caldac_channels) { | |
666 | comedi_error(dev, "illegal caldac channel"); | |
667 | return -1; | |
668 | } | |
669 | ||
670 | if (value == devpriv->caldac_value[address]) | |
671 | return 1; | |
672 | ||
673 | devpriv->caldac_value[address] = value; | |
674 | ||
675 | write_calibration_bitstream(dev, cal_enable_bits(dev), bitstream, | |
676 | bitstream_length); | |
677 | ||
678 | udelay(caldac_8800_udelay); | |
679 | outw(cal_enable_bits(dev) | SELECT_8800_BIT, | |
680 | devpriv->control_status + CALIBRATION_REG); | |
681 | udelay(caldac_8800_udelay); | |
682 | outw(cal_enable_bits(dev), devpriv->control_status + CALIBRATION_REG); | |
683 | ||
684 | return 1; | |
685 | } | |
686 | ||
687 | static int caldac_write_insn(struct comedi_device *dev, | |
688 | struct comedi_subdevice *s, | |
689 | struct comedi_insn *insn, unsigned int *data) | |
690 | { | |
691 | const unsigned int channel = CR_CHAN(insn->chanspec); | |
692 | ||
693 | return caldac_8800_write(dev, channel, data[0]); | |
694 | } | |
695 | ||
696 | static int caldac_read_insn(struct comedi_device *dev, | |
697 | struct comedi_subdevice *s, | |
698 | struct comedi_insn *insn, unsigned int *data) | |
699 | { | |
700 | data[0] = devpriv->caldac_value[CR_CHAN(insn->chanspec)]; | |
701 | ||
702 | return 1; | |
703 | } | |
704 | ||
705 | /* 1602/16 pregain offset */ | |
706 | static int dac08_write(struct comedi_device *dev, unsigned int value) | |
707 | { | |
708 | if (devpriv->dac08_value == value) | |
709 | return 1; | |
710 | ||
711 | devpriv->dac08_value = value; | |
712 | ||
713 | outw(cal_enable_bits(dev) | (value & 0xff), | |
714 | devpriv->control_status + CALIBRATION_REG); | |
715 | udelay(1); | |
716 | outw(cal_enable_bits(dev) | SELECT_DAC08_BIT | (value & 0xff), | |
717 | devpriv->control_status + CALIBRATION_REG); | |
718 | udelay(1); | |
719 | outw(cal_enable_bits(dev) | (value & 0xff), | |
720 | devpriv->control_status + CALIBRATION_REG); | |
721 | udelay(1); | |
722 | ||
723 | return 1; | |
724 | } | |
725 | ||
726 | static int dac08_write_insn(struct comedi_device *dev, | |
727 | struct comedi_subdevice *s, | |
728 | struct comedi_insn *insn, unsigned int *data) | |
729 | { | |
730 | return dac08_write(dev, data[0]); | |
731 | } | |
732 | ||
733 | static int dac08_read_insn(struct comedi_device *dev, | |
734 | struct comedi_subdevice *s, struct comedi_insn *insn, | |
735 | unsigned int *data) | |
736 | { | |
737 | data[0] = devpriv->dac08_value; | |
738 | ||
739 | return 1; | |
740 | } | |
741 | ||
742 | static int cb_pcidas_trimpot_write(struct comedi_device *dev, | |
743 | unsigned int channel, unsigned int value) | |
744 | { | |
745 | if (devpriv->trimpot_value[channel] == value) | |
746 | return 1; | |
747 | ||
748 | devpriv->trimpot_value[channel] = value; | |
749 | switch (thisboard->trimpot) { | |
750 | case AD7376: | |
751 | trimpot_7376_write(dev, value); | |
752 | break; | |
753 | case AD8402: | |
754 | trimpot_8402_write(dev, channel, value); | |
755 | break; | |
756 | default: | |
757 | comedi_error(dev, "driver bug?"); | |
758 | return -1; | |
759 | break; | |
760 | } | |
761 | ||
762 | return 1; | |
763 | } | |
764 | ||
765 | static int trimpot_write_insn(struct comedi_device *dev, | |
766 | struct comedi_subdevice *s, | |
767 | struct comedi_insn *insn, unsigned int *data) | |
768 | { | |
769 | unsigned int channel = CR_CHAN(insn->chanspec); | |
770 | ||
771 | return cb_pcidas_trimpot_write(dev, channel, data[0]); | |
772 | } | |
773 | ||
774 | static int trimpot_read_insn(struct comedi_device *dev, | |
775 | struct comedi_subdevice *s, | |
776 | struct comedi_insn *insn, unsigned int *data) | |
777 | { | |
778 | unsigned int channel = CR_CHAN(insn->chanspec); | |
779 | ||
780 | data[0] = devpriv->trimpot_value[channel]; | |
781 | ||
782 | return 1; | |
783 | } | |
784 | ||
785 | static int cb_pcidas_ai_cmdtest(struct comedi_device *dev, | |
786 | struct comedi_subdevice *s, | |
787 | struct comedi_cmd *cmd) | |
788 | { | |
789 | int err = 0; | |
790 | int tmp; | |
791 | int i, gain, start_chan; | |
792 | ||
793 | /* cmdtest tests a particular command to see if it is valid. | |
794 | * Using the cmdtest ioctl, a user can create a valid cmd | |
795 | * and then have it executes by the cmd ioctl. | |
796 | * | |
797 | * cmdtest returns 1,2,3,4 or 0, depending on which tests | |
798 | * the command passes. */ | |
799 | ||
800 | /* step 1: make sure trigger sources are trivially valid */ | |
801 | ||
802 | tmp = cmd->start_src; | |
803 | cmd->start_src &= TRIG_NOW | TRIG_EXT; | |
804 | if (!cmd->start_src || tmp != cmd->start_src) | |
805 | err++; | |
806 | ||
807 | tmp = cmd->scan_begin_src; | |
808 | cmd->scan_begin_src &= TRIG_FOLLOW | TRIG_TIMER | TRIG_EXT; | |
809 | if (!cmd->scan_begin_src || tmp != cmd->scan_begin_src) | |
810 | err++; | |
811 | ||
812 | tmp = cmd->convert_src; | |
813 | cmd->convert_src &= TRIG_TIMER | TRIG_NOW | TRIG_EXT; | |
814 | if (!cmd->convert_src || tmp != cmd->convert_src) | |
815 | err++; | |
816 | ||
817 | tmp = cmd->scan_end_src; | |
818 | cmd->scan_end_src &= TRIG_COUNT; | |
819 | if (!cmd->scan_end_src || tmp != cmd->scan_end_src) | |
820 | err++; | |
821 | ||
822 | tmp = cmd->stop_src; | |
823 | cmd->stop_src &= TRIG_COUNT | TRIG_NONE; | |
824 | if (!cmd->stop_src || tmp != cmd->stop_src) | |
825 | err++; | |
826 | ||
827 | if (err) | |
828 | return 1; | |
829 | ||
830 | /* step 2: make sure trigger sources are unique and mutually compatible */ | |
831 | ||
832 | if (cmd->start_src != TRIG_NOW && cmd->start_src != TRIG_EXT) | |
833 | err++; | |
834 | if (cmd->scan_begin_src != TRIG_FOLLOW && | |
835 | cmd->scan_begin_src != TRIG_TIMER && | |
836 | cmd->scan_begin_src != TRIG_EXT) | |
837 | err++; | |
838 | if (cmd->convert_src != TRIG_TIMER && | |
839 | cmd->convert_src != TRIG_EXT && cmd->convert_src != TRIG_NOW) | |
840 | err++; | |
841 | if (cmd->stop_src != TRIG_COUNT && cmd->stop_src != TRIG_NONE) | |
842 | err++; | |
843 | ||
844 | /* make sure trigger sources are compatible with each other */ | |
845 | if (cmd->scan_begin_src == TRIG_FOLLOW && cmd->convert_src == TRIG_NOW) | |
846 | err++; | |
847 | if (cmd->scan_begin_src != TRIG_FOLLOW && cmd->convert_src != TRIG_NOW) | |
848 | err++; | |
849 | if (cmd->start_src == TRIG_EXT && | |
850 | (cmd->convert_src == TRIG_EXT || cmd->scan_begin_src == TRIG_EXT)) | |
851 | err++; | |
852 | ||
853 | if (err) | |
854 | return 2; | |
855 | ||
856 | /* step 3: make sure arguments are trivially compatible */ | |
857 | ||
858 | switch (cmd->start_src) { | |
859 | case TRIG_EXT: | |
860 | /* External trigger, only CR_EDGE and CR_INVERT flags allowed */ | |
861 | if ((cmd->start_arg | |
862 | & (CR_FLAGS_MASK & ~(CR_EDGE | CR_INVERT))) != 0) { | |
863 | cmd->start_arg &= | |
864 | ~(CR_FLAGS_MASK & ~(CR_EDGE | CR_INVERT)); | |
865 | err++; | |
866 | } | |
867 | if (!thisboard->has_ai_trig_invert && | |
868 | (cmd->start_arg & CR_INVERT)) { | |
869 | cmd->start_arg &= (CR_FLAGS_MASK & ~CR_INVERT); | |
870 | err++; | |
871 | } | |
872 | break; | |
873 | default: | |
874 | if (cmd->start_arg != 0) { | |
875 | cmd->start_arg = 0; | |
876 | err++; | |
877 | } | |
878 | break; | |
879 | } | |
880 | ||
881 | if (cmd->scan_begin_src == TRIG_TIMER) { | |
882 | if (cmd->scan_begin_arg < | |
883 | thisboard->ai_speed * cmd->chanlist_len) { | |
884 | cmd->scan_begin_arg = | |
885 | thisboard->ai_speed * cmd->chanlist_len; | |
886 | err++; | |
887 | } | |
888 | } | |
889 | if (cmd->convert_src == TRIG_TIMER) { | |
890 | if (cmd->convert_arg < thisboard->ai_speed) { | |
891 | cmd->convert_arg = thisboard->ai_speed; | |
892 | err++; | |
893 | } | |
894 | } | |
895 | ||
896 | if (cmd->scan_end_arg != cmd->chanlist_len) { | |
897 | cmd->scan_end_arg = cmd->chanlist_len; | |
898 | err++; | |
899 | } | |
900 | if (cmd->stop_src == TRIG_NONE) { | |
901 | /* TRIG_NONE */ | |
902 | if (cmd->stop_arg != 0) { | |
903 | cmd->stop_arg = 0; | |
904 | err++; | |
905 | } | |
906 | } | |
907 | ||
908 | if (err) | |
909 | return 3; | |
910 | ||
911 | /* step 4: fix up any arguments */ | |
912 | ||
913 | if (cmd->scan_begin_src == TRIG_TIMER) { | |
914 | tmp = cmd->scan_begin_arg; | |
915 | i8253_cascade_ns_to_timer_2div(TIMER_BASE, | |
916 | &(devpriv->divisor1), | |
917 | &(devpriv->divisor2), | |
918 | &(cmd->scan_begin_arg), | |
919 | cmd->flags & TRIG_ROUND_MASK); | |
920 | if (tmp != cmd->scan_begin_arg) | |
921 | err++; | |
922 | } | |
923 | if (cmd->convert_src == TRIG_TIMER) { | |
924 | tmp = cmd->convert_arg; | |
925 | i8253_cascade_ns_to_timer_2div(TIMER_BASE, | |
926 | &(devpriv->divisor1), | |
927 | &(devpriv->divisor2), | |
928 | &(cmd->convert_arg), | |
929 | cmd->flags & TRIG_ROUND_MASK); | |
930 | if (tmp != cmd->convert_arg) | |
931 | err++; | |
932 | } | |
933 | ||
934 | if (err) | |
935 | return 4; | |
936 | ||
937 | /* check channel/gain list against card's limitations */ | |
938 | if (cmd->chanlist) { | |
939 | gain = CR_RANGE(cmd->chanlist[0]); | |
940 | start_chan = CR_CHAN(cmd->chanlist[0]); | |
941 | for (i = 1; i < cmd->chanlist_len; i++) { | |
942 | if (CR_CHAN(cmd->chanlist[i]) != | |
943 | (start_chan + i) % s->n_chan) { | |
944 | comedi_error(dev, | |
945 | "entries in chanlist must be consecutive channels, counting upwards\n"); | |
946 | err++; | |
947 | } | |
948 | if (CR_RANGE(cmd->chanlist[i]) != gain) { | |
949 | comedi_error(dev, | |
950 | "entries in chanlist must all have the same gain\n"); | |
951 | err++; | |
952 | } | |
953 | } | |
954 | } | |
955 | ||
956 | if (err) | |
957 | return 5; | |
958 | ||
959 | return 0; | |
960 | } | |
961 | ||
962 | static void cb_pcidas_load_counters(struct comedi_device *dev, unsigned int *ns, | |
963 | int rounding_flags) | |
964 | { | |
965 | i8253_cascade_ns_to_timer_2div(TIMER_BASE, &(devpriv->divisor1), | |
966 | &(devpriv->divisor2), ns, | |
967 | rounding_flags & TRIG_ROUND_MASK); | |
968 | ||
969 | /* Write the values of ctr1 and ctr2 into counters 1 and 2 */ | |
970 | i8254_load(devpriv->pacer_counter_dio + ADC8254, 0, 1, | |
971 | devpriv->divisor1, 2); | |
972 | i8254_load(devpriv->pacer_counter_dio + ADC8254, 0, 2, | |
973 | devpriv->divisor2, 2); | |
974 | } | |
975 | ||
976 | static int cb_pcidas_ai_cmd(struct comedi_device *dev, | |
977 | struct comedi_subdevice *s) | |
978 | { | |
979 | struct comedi_async *async = s->async; | |
980 | struct comedi_cmd *cmd = &async->cmd; | |
981 | unsigned int bits; | |
982 | unsigned long flags; | |
983 | ||
984 | /* make sure CAL_EN_BIT is disabled */ | |
985 | outw(0, devpriv->control_status + CALIBRATION_REG); | |
986 | /* initialize before settings pacer source and count values */ | |
987 | outw(0, devpriv->control_status + TRIG_CONTSTAT); | |
988 | /* clear fifo */ | |
989 | outw(0, devpriv->adc_fifo + ADCFIFOCLR); | |
990 | ||
991 | /* set mux limits, gain and pacer source */ | |
992 | bits = BEGIN_SCAN(CR_CHAN(cmd->chanlist[0])) | | |
993 | END_SCAN(CR_CHAN(cmd->chanlist[cmd->chanlist_len - 1])) | | |
994 | GAIN_BITS(CR_RANGE(cmd->chanlist[0])); | |
995 | /* set unipolar/bipolar */ | |
996 | if (CR_RANGE(cmd->chanlist[0]) & IS_UNIPOLAR) | |
997 | bits |= UNIP; | |
998 | /* set singleended/differential */ | |
999 | if (CR_AREF(cmd->chanlist[0]) != AREF_DIFF) | |
1000 | bits |= SE; | |
1001 | /* set pacer source */ | |
1002 | if (cmd->convert_src == TRIG_EXT || cmd->scan_begin_src == TRIG_EXT) | |
1003 | bits |= PACER_EXT_RISE; | |
1004 | else | |
1005 | bits |= PACER_INT; | |
1006 | outw(bits, devpriv->control_status + ADCMUX_CONT); | |
1007 | ||
1008 | #ifdef CB_PCIDAS_DEBUG | |
1009 | dev_dbg(dev->class_dev, "sent 0x%x to adcmux control\n", bits); | |
1010 | #endif | |
1011 | ||
1012 | /* load counters */ | |
1013 | if (cmd->convert_src == TRIG_TIMER) | |
1014 | cb_pcidas_load_counters(dev, &cmd->convert_arg, | |
1015 | cmd->flags & TRIG_ROUND_MASK); | |
1016 | else if (cmd->scan_begin_src == TRIG_TIMER) | |
1017 | cb_pcidas_load_counters(dev, &cmd->scan_begin_arg, | |
1018 | cmd->flags & TRIG_ROUND_MASK); | |
1019 | ||
1020 | /* set number of conversions */ | |
1021 | if (cmd->stop_src == TRIG_COUNT) | |
1022 | devpriv->count = cmd->chanlist_len * cmd->stop_arg; | |
1023 | /* enable interrupts */ | |
1024 | spin_lock_irqsave(&dev->spinlock, flags); | |
1025 | devpriv->adc_fifo_bits |= INTE; | |
1026 | devpriv->adc_fifo_bits &= ~INT_MASK; | |
1027 | if (cmd->flags & TRIG_WAKE_EOS) { | |
1028 | if (cmd->convert_src == TRIG_NOW && cmd->chanlist_len > 1) | |
1029 | devpriv->adc_fifo_bits |= INT_EOS; /* interrupt end of burst */ | |
1030 | else | |
1031 | devpriv->adc_fifo_bits |= INT_FNE; /* interrupt fifo not empty */ | |
1032 | } else { | |
1033 | devpriv->adc_fifo_bits |= INT_FHF; /* interrupt fifo half full */ | |
1034 | } | |
1035 | #ifdef CB_PCIDAS_DEBUG | |
1036 | dev_dbg(dev->class_dev, "adc_fifo_bits are 0x%x\n", | |
1037 | devpriv->adc_fifo_bits); | |
1038 | #endif | |
1039 | /* enable (and clear) interrupts */ | |
1040 | outw(devpriv->adc_fifo_bits | EOAI | INT | LADFUL, | |
1041 | devpriv->control_status + INT_ADCFIFO); | |
1042 | spin_unlock_irqrestore(&dev->spinlock, flags); | |
1043 | ||
1044 | /* set start trigger and burst mode */ | |
1045 | bits = 0; | |
1046 | if (cmd->start_src == TRIG_NOW) | |
1047 | bits |= SW_TRIGGER; | |
1048 | else if (cmd->start_src == TRIG_EXT) { | |
1049 | bits |= EXT_TRIGGER | TGEN | XTRCL; | |
1050 | if (thisboard->has_ai_trig_invert | |
1051 | && (cmd->start_arg & CR_INVERT)) | |
1052 | bits |= TGPOL; | |
1053 | if (thisboard->has_ai_trig_gated && (cmd->start_arg & CR_EDGE)) | |
1054 | bits |= TGSEL; | |
1055 | } else { | |
1056 | comedi_error(dev, "bug!"); | |
1057 | return -1; | |
1058 | } | |
1059 | if (cmd->convert_src == TRIG_NOW && cmd->chanlist_len > 1) | |
1060 | bits |= BURSTE; | |
1061 | outw(bits, devpriv->control_status + TRIG_CONTSTAT); | |
1062 | #ifdef CB_PCIDAS_DEBUG | |
1063 | dev_dbg(dev->class_dev, "sent 0x%x to trig control\n", bits); | |
1064 | #endif | |
1065 | ||
1066 | return 0; | |
1067 | } | |
1068 | ||
1069 | static int cb_pcidas_ao_cmdtest(struct comedi_device *dev, | |
1070 | struct comedi_subdevice *s, | |
1071 | struct comedi_cmd *cmd) | |
1072 | { | |
1073 | int err = 0; | |
1074 | int tmp; | |
1075 | ||
1076 | /* cmdtest tests a particular command to see if it is valid. | |
1077 | * Using the cmdtest ioctl, a user can create a valid cmd | |
1078 | * and then have it executes by the cmd ioctl. | |
1079 | * | |
1080 | * cmdtest returns 1,2,3,4 or 0, depending on which tests | |
1081 | * the command passes. */ | |
1082 | ||
1083 | /* step 1: make sure trigger sources are trivially valid */ | |
1084 | ||
1085 | tmp = cmd->start_src; | |
1086 | cmd->start_src &= TRIG_INT; | |
1087 | if (!cmd->start_src || tmp != cmd->start_src) | |
1088 | err++; | |
1089 | ||
1090 | tmp = cmd->scan_begin_src; | |
1091 | cmd->scan_begin_src &= TRIG_TIMER | TRIG_EXT; | |
1092 | if (!cmd->scan_begin_src || tmp != cmd->scan_begin_src) | |
1093 | err++; | |
1094 | ||
1095 | tmp = cmd->convert_src; | |
1096 | cmd->convert_src &= TRIG_NOW; | |
1097 | if (!cmd->convert_src || tmp != cmd->convert_src) | |
1098 | err++; | |
1099 | ||
1100 | tmp = cmd->scan_end_src; | |
1101 | cmd->scan_end_src &= TRIG_COUNT; | |
1102 | if (!cmd->scan_end_src || tmp != cmd->scan_end_src) | |
1103 | err++; | |
1104 | ||
1105 | tmp = cmd->stop_src; | |
1106 | cmd->stop_src &= TRIG_COUNT | TRIG_NONE; | |
1107 | if (!cmd->stop_src || tmp != cmd->stop_src) | |
1108 | err++; | |
1109 | ||
1110 | if (err) | |
1111 | return 1; | |
1112 | ||
1113 | /* step 2: make sure trigger sources are unique and mutually compatible */ | |
1114 | ||
1115 | if (cmd->scan_begin_src != TRIG_TIMER && | |
1116 | cmd->scan_begin_src != TRIG_EXT) | |
1117 | err++; | |
1118 | if (cmd->stop_src != TRIG_COUNT && cmd->stop_src != TRIG_NONE) | |
1119 | err++; | |
1120 | ||
1121 | if (err) | |
1122 | return 2; | |
1123 | ||
1124 | /* step 3: make sure arguments are trivially compatible */ | |
1125 | ||
1126 | if (cmd->start_arg != 0) { | |
1127 | cmd->start_arg = 0; | |
1128 | err++; | |
1129 | } | |
1130 | ||
1131 | if (cmd->scan_begin_src == TRIG_TIMER) { | |
1132 | if (cmd->scan_begin_arg < thisboard->ao_scan_speed) { | |
1133 | cmd->scan_begin_arg = thisboard->ao_scan_speed; | |
1134 | err++; | |
1135 | } | |
1136 | } | |
1137 | ||
1138 | if (cmd->scan_end_arg != cmd->chanlist_len) { | |
1139 | cmd->scan_end_arg = cmd->chanlist_len; | |
1140 | err++; | |
1141 | } | |
1142 | if (cmd->stop_src == TRIG_NONE) { | |
1143 | /* TRIG_NONE */ | |
1144 | if (cmd->stop_arg != 0) { | |
1145 | cmd->stop_arg = 0; | |
1146 | err++; | |
1147 | } | |
1148 | } | |
1149 | ||
1150 | if (err) | |
1151 | return 3; | |
1152 | ||
1153 | /* step 4: fix up any arguments */ | |
1154 | ||
1155 | if (cmd->scan_begin_src == TRIG_TIMER) { | |
1156 | tmp = cmd->scan_begin_arg; | |
1157 | i8253_cascade_ns_to_timer_2div(TIMER_BASE, | |
1158 | &(devpriv->ao_divisor1), | |
1159 | &(devpriv->ao_divisor2), | |
1160 | &(cmd->scan_begin_arg), | |
1161 | cmd->flags & TRIG_ROUND_MASK); | |
1162 | if (tmp != cmd->scan_begin_arg) | |
1163 | err++; | |
1164 | } | |
1165 | ||
1166 | if (err) | |
1167 | return 4; | |
1168 | ||
1169 | /* check channel/gain list against card's limitations */ | |
1170 | if (cmd->chanlist && cmd->chanlist_len > 1) { | |
1171 | if (CR_CHAN(cmd->chanlist[0]) != 0 || | |
1172 | CR_CHAN(cmd->chanlist[1]) != 1) { | |
1173 | comedi_error(dev, | |
1174 | "channels must be ordered channel 0, channel 1 in chanlist\n"); | |
1175 | err++; | |
1176 | } | |
1177 | } | |
1178 | ||
1179 | if (err) | |
1180 | return 5; | |
1181 | ||
1182 | return 0; | |
1183 | } | |
1184 | ||
1185 | /* cancel analog input command */ | |
1186 | static int cb_pcidas_cancel(struct comedi_device *dev, | |
1187 | struct comedi_subdevice *s) | |
1188 | { | |
1189 | unsigned long flags; | |
1190 | ||
1191 | spin_lock_irqsave(&dev->spinlock, flags); | |
1192 | /* disable interrupts */ | |
1193 | devpriv->adc_fifo_bits &= ~INTE & ~EOAIE; | |
1194 | outw(devpriv->adc_fifo_bits, devpriv->control_status + INT_ADCFIFO); | |
1195 | spin_unlock_irqrestore(&dev->spinlock, flags); | |
1196 | ||
1197 | /* disable start trigger source and burst mode */ | |
1198 | outw(0, devpriv->control_status + TRIG_CONTSTAT); | |
1199 | /* software pacer source */ | |
1200 | outw(0, devpriv->control_status + ADCMUX_CONT); | |
1201 | ||
1202 | return 0; | |
1203 | } | |
1204 | ||
1205 | static int cb_pcidas_ao_inttrig(struct comedi_device *dev, | |
1206 | struct comedi_subdevice *s, | |
1207 | unsigned int trig_num) | |
1208 | { | |
1209 | unsigned int num_bytes, num_points = thisboard->fifo_size; | |
1210 | struct comedi_async *async = s->async; | |
1211 | struct comedi_cmd *cmd = &s->async->cmd; | |
1212 | unsigned long flags; | |
1213 | ||
1214 | if (trig_num != 0) | |
1215 | return -EINVAL; | |
1216 | ||
1217 | /* load up fifo */ | |
1218 | if (cmd->stop_src == TRIG_COUNT && devpriv->ao_count < num_points) | |
1219 | num_points = devpriv->ao_count; | |
1220 | ||
1221 | num_bytes = cfc_read_array_from_buffer(s, devpriv->ao_buffer, | |
1222 | num_points * sizeof(short)); | |
1223 | num_points = num_bytes / sizeof(short); | |
1224 | ||
1225 | if (cmd->stop_src == TRIG_COUNT) | |
1226 | devpriv->ao_count -= num_points; | |
1227 | /* write data to board's fifo */ | |
1228 | outsw(devpriv->ao_registers + DACDATA, devpriv->ao_buffer, num_bytes); | |
1229 | ||
1230 | /* enable dac half-full and empty interrupts */ | |
1231 | spin_lock_irqsave(&dev->spinlock, flags); | |
1232 | devpriv->adc_fifo_bits |= DAEMIE | DAHFIE; | |
1233 | #ifdef CB_PCIDAS_DEBUG | |
1234 | dev_dbg(dev->class_dev, "adc_fifo_bits are 0x%x\n", | |
1235 | devpriv->adc_fifo_bits); | |
1236 | #endif | |
1237 | /* enable and clear interrupts */ | |
1238 | outw(devpriv->adc_fifo_bits | DAEMI | DAHFI, | |
1239 | devpriv->control_status + INT_ADCFIFO); | |
1240 | ||
1241 | /* start dac */ | |
1242 | devpriv->ao_control_bits |= DAC_START | DACEN | DAC_EMPTY; | |
1243 | outw(devpriv->ao_control_bits, devpriv->control_status + DAC_CSR); | |
1244 | #ifdef CB_PCIDAS_DEBUG | |
1245 | dev_dbg(dev->class_dev, "sent 0x%x to dac control\n", | |
1246 | devpriv->ao_control_bits); | |
1247 | #endif | |
1248 | spin_unlock_irqrestore(&dev->spinlock, flags); | |
1249 | ||
1250 | async->inttrig = NULL; | |
1251 | ||
1252 | return 0; | |
1253 | } | |
1254 | ||
1255 | static int cb_pcidas_ao_cmd(struct comedi_device *dev, | |
1256 | struct comedi_subdevice *s) | |
1257 | { | |
1258 | struct comedi_async *async = s->async; | |
1259 | struct comedi_cmd *cmd = &async->cmd; | |
1260 | unsigned int i; | |
1261 | unsigned long flags; | |
1262 | ||
1263 | /* set channel limits, gain */ | |
1264 | spin_lock_irqsave(&dev->spinlock, flags); | |
1265 | for (i = 0; i < cmd->chanlist_len; i++) { | |
1266 | /* enable channel */ | |
1267 | devpriv->ao_control_bits |= | |
1268 | DAC_CHAN_EN(CR_CHAN(cmd->chanlist[i])); | |
1269 | /* set range */ | |
1270 | devpriv->ao_control_bits |= DAC_RANGE(CR_CHAN(cmd->chanlist[i]), | |
1271 | CR_RANGE(cmd-> | |
1272 | chanlist[i])); | |
1273 | } | |
1274 | ||
1275 | /* disable analog out before settings pacer source and count values */ | |
1276 | outw(devpriv->ao_control_bits, devpriv->control_status + DAC_CSR); | |
1277 | spin_unlock_irqrestore(&dev->spinlock, flags); | |
1278 | ||
1279 | /* clear fifo */ | |
1280 | outw(0, devpriv->ao_registers + DACFIFOCLR); | |
1281 | ||
1282 | /* load counters */ | |
1283 | if (cmd->scan_begin_src == TRIG_TIMER) { | |
1284 | i8253_cascade_ns_to_timer_2div(TIMER_BASE, | |
1285 | &(devpriv->ao_divisor1), | |
1286 | &(devpriv->ao_divisor2), | |
1287 | &(cmd->scan_begin_arg), | |
1288 | cmd->flags); | |
1289 | ||
1290 | /* Write the values of ctr1 and ctr2 into counters 1 and 2 */ | |
1291 | i8254_load(devpriv->pacer_counter_dio + DAC8254, 0, 1, | |
1292 | devpriv->ao_divisor1, 2); | |
1293 | i8254_load(devpriv->pacer_counter_dio + DAC8254, 0, 2, | |
1294 | devpriv->ao_divisor2, 2); | |
1295 | } | |
1296 | /* set number of conversions */ | |
1297 | if (cmd->stop_src == TRIG_COUNT) | |
1298 | devpriv->ao_count = cmd->chanlist_len * cmd->stop_arg; | |
1299 | /* set pacer source */ | |
1300 | spin_lock_irqsave(&dev->spinlock, flags); | |
1301 | switch (cmd->scan_begin_src) { | |
1302 | case TRIG_TIMER: | |
1303 | devpriv->ao_control_bits |= DAC_PACER_INT; | |
1304 | break; | |
1305 | case TRIG_EXT: | |
1306 | devpriv->ao_control_bits |= DAC_PACER_EXT_RISE; | |
1307 | break; | |
1308 | default: | |
1309 | spin_unlock_irqrestore(&dev->spinlock, flags); | |
1310 | comedi_error(dev, "error setting dac pacer source"); | |
1311 | return -1; | |
1312 | break; | |
1313 | } | |
1314 | spin_unlock_irqrestore(&dev->spinlock, flags); | |
1315 | ||
1316 | async->inttrig = cb_pcidas_ao_inttrig; | |
1317 | ||
1318 | return 0; | |
1319 | } | |
1320 | ||
1321 | /* cancel analog output command */ | |
1322 | static int cb_pcidas_ao_cancel(struct comedi_device *dev, | |
1323 | struct comedi_subdevice *s) | |
1324 | { | |
1325 | unsigned long flags; | |
1326 | ||
1327 | spin_lock_irqsave(&dev->spinlock, flags); | |
1328 | /* disable interrupts */ | |
1329 | devpriv->adc_fifo_bits &= ~DAHFIE & ~DAEMIE; | |
1330 | outw(devpriv->adc_fifo_bits, devpriv->control_status + INT_ADCFIFO); | |
1331 | ||
1332 | /* disable output */ | |
1333 | devpriv->ao_control_bits &= ~DACEN & ~DAC_PACER_MASK; | |
1334 | outw(devpriv->ao_control_bits, devpriv->control_status + DAC_CSR); | |
1335 | spin_unlock_irqrestore(&dev->spinlock, flags); | |
1336 | ||
1337 | return 0; | |
1338 | } | |
1339 | ||
1340 | static void handle_ao_interrupt(struct comedi_device *dev, unsigned int status) | |
1341 | { | |
1342 | struct comedi_subdevice *s = dev->write_subdev; | |
1343 | struct comedi_async *async = s->async; | |
1344 | struct comedi_cmd *cmd = &async->cmd; | |
1345 | unsigned int half_fifo = thisboard->fifo_size / 2; | |
1346 | unsigned int num_points; | |
1347 | unsigned long flags; | |
1348 | ||
1349 | async->events = 0; | |
1350 | ||
1351 | if (status & DAEMI) { | |
1352 | /* clear dac empty interrupt latch */ | |
1353 | spin_lock_irqsave(&dev->spinlock, flags); | |
1354 | outw(devpriv->adc_fifo_bits | DAEMI, | |
1355 | devpriv->control_status + INT_ADCFIFO); | |
1356 | spin_unlock_irqrestore(&dev->spinlock, flags); | |
1357 | if (inw(devpriv->ao_registers + DAC_CSR) & DAC_EMPTY) { | |
1358 | if (cmd->stop_src == TRIG_NONE || | |
1359 | (cmd->stop_src == TRIG_COUNT | |
1360 | && devpriv->ao_count)) { | |
1361 | comedi_error(dev, "dac fifo underflow"); | |
1362 | cb_pcidas_ao_cancel(dev, s); | |
1363 | async->events |= COMEDI_CB_ERROR; | |
1364 | } | |
1365 | async->events |= COMEDI_CB_EOA; | |
1366 | } | |
1367 | } else if (status & DAHFI) { | |
1368 | unsigned int num_bytes; | |
1369 | ||
1370 | /* figure out how many points we are writing to fifo */ | |
1371 | num_points = half_fifo; | |
1372 | if (cmd->stop_src == TRIG_COUNT && | |
1373 | devpriv->ao_count < num_points) | |
1374 | num_points = devpriv->ao_count; | |
1375 | num_bytes = | |
1376 | cfc_read_array_from_buffer(s, devpriv->ao_buffer, | |
1377 | num_points * sizeof(short)); | |
1378 | num_points = num_bytes / sizeof(short); | |
1379 | ||
1380 | if (async->cmd.stop_src == TRIG_COUNT) | |
1381 | devpriv->ao_count -= num_points; | |
1382 | /* write data to board's fifo */ | |
1383 | outsw(devpriv->ao_registers + DACDATA, devpriv->ao_buffer, | |
1384 | num_points); | |
1385 | /* clear half-full interrupt latch */ | |
1386 | spin_lock_irqsave(&dev->spinlock, flags); | |
1387 | outw(devpriv->adc_fifo_bits | DAHFI, | |
1388 | devpriv->control_status + INT_ADCFIFO); | |
1389 | spin_unlock_irqrestore(&dev->spinlock, flags); | |
1390 | } | |
1391 | ||
1392 | comedi_event(dev, s); | |
1393 | } | |
1394 | ||
1395 | static irqreturn_t cb_pcidas_interrupt(int irq, void *d) | |
1396 | { | |
1397 | struct comedi_device *dev = (struct comedi_device *)d; | |
1398 | struct comedi_subdevice *s = dev->read_subdev; | |
1399 | struct comedi_async *async; | |
1400 | int status, s5933_status; | |
1401 | int half_fifo = thisboard->fifo_size / 2; | |
1402 | unsigned int num_samples, i; | |
1403 | static const int timeout = 10000; | |
1404 | unsigned long flags; | |
1405 | ||
1406 | if (dev->attached == 0) | |
1407 | return IRQ_NONE; | |
1408 | ||
1409 | async = s->async; | |
1410 | async->events = 0; | |
1411 | ||
1412 | s5933_status = inl(devpriv->s5933_config + AMCC_OP_REG_INTCSR); | |
1413 | #ifdef CB_PCIDAS_DEBUG | |
1414 | dev_dbg(dev->class_dev, "intcsr 0x%x\n", s5933_status); | |
1415 | dev_dbg(dev->class_dev, "mbef 0x%x\n", | |
1416 | inl(devpriv->s5933_config + AMCC_OP_REG_MBEF)); | |
1417 | #endif | |
1418 | ||
1419 | if ((INTCSR_INTR_ASSERTED & s5933_status) == 0) | |
1420 | return IRQ_NONE; | |
1421 | ||
1422 | /* make sure mailbox 4 is empty */ | |
1423 | inl_p(devpriv->s5933_config + AMCC_OP_REG_IMB4); | |
1424 | /* clear interrupt on amcc s5933 */ | |
1425 | outl(devpriv->s5933_intcsr_bits | INTCSR_INBOX_INTR_STATUS, | |
1426 | devpriv->s5933_config + AMCC_OP_REG_INTCSR); | |
1427 | ||
1428 | status = inw(devpriv->control_status + INT_ADCFIFO); | |
1429 | #ifdef CB_PCIDAS_DEBUG | |
1430 | if ((status & (INT | EOAI | LADFUL | DAHFI | DAEMI)) == 0) | |
1431 | comedi_error(dev, "spurious interrupt"); | |
1432 | #endif | |
1433 | ||
1434 | /* check for analog output interrupt */ | |
1435 | if (status & (DAHFI | DAEMI)) | |
1436 | handle_ao_interrupt(dev, status); | |
1437 | /* check for analog input interrupts */ | |
1438 | /* if fifo half-full */ | |
1439 | if (status & ADHFI) { | |
1440 | /* read data */ | |
1441 | num_samples = half_fifo; | |
1442 | if (async->cmd.stop_src == TRIG_COUNT && | |
1443 | num_samples > devpriv->count) { | |
1444 | num_samples = devpriv->count; | |
1445 | } | |
1446 | insw(devpriv->adc_fifo + ADCDATA, devpriv->ai_buffer, | |
1447 | num_samples); | |
1448 | cfc_write_array_to_buffer(s, devpriv->ai_buffer, | |
1449 | num_samples * sizeof(short)); | |
1450 | devpriv->count -= num_samples; | |
1451 | if (async->cmd.stop_src == TRIG_COUNT && devpriv->count == 0) { | |
1452 | async->events |= COMEDI_CB_EOA; | |
1453 | cb_pcidas_cancel(dev, s); | |
1454 | } | |
1455 | /* clear half-full interrupt latch */ | |
1456 | spin_lock_irqsave(&dev->spinlock, flags); | |
1457 | outw(devpriv->adc_fifo_bits | INT, | |
1458 | devpriv->control_status + INT_ADCFIFO); | |
1459 | spin_unlock_irqrestore(&dev->spinlock, flags); | |
1460 | /* else if fifo not empty */ | |
1461 | } else if (status & (ADNEI | EOBI)) { | |
1462 | for (i = 0; i < timeout; i++) { | |
1463 | /* break if fifo is empty */ | |
1464 | if ((ADNE & inw(devpriv->control_status + | |
1465 | INT_ADCFIFO)) == 0) | |
1466 | break; | |
1467 | cfc_write_to_buffer(s, inw(devpriv->adc_fifo)); | |
1468 | if (async->cmd.stop_src == TRIG_COUNT && --devpriv->count == 0) { /* end of acquisition */ | |
1469 | cb_pcidas_cancel(dev, s); | |
1470 | async->events |= COMEDI_CB_EOA; | |
1471 | break; | |
1472 | } | |
1473 | } | |
1474 | /* clear not-empty interrupt latch */ | |
1475 | spin_lock_irqsave(&dev->spinlock, flags); | |
1476 | outw(devpriv->adc_fifo_bits | INT, | |
1477 | devpriv->control_status + INT_ADCFIFO); | |
1478 | spin_unlock_irqrestore(&dev->spinlock, flags); | |
1479 | } else if (status & EOAI) { | |
1480 | comedi_error(dev, | |
1481 | "bug! encountered end of acquisition interrupt?"); | |
1482 | /* clear EOA interrupt latch */ | |
1483 | spin_lock_irqsave(&dev->spinlock, flags); | |
1484 | outw(devpriv->adc_fifo_bits | EOAI, | |
1485 | devpriv->control_status + INT_ADCFIFO); | |
1486 | spin_unlock_irqrestore(&dev->spinlock, flags); | |
1487 | } | |
1488 | /* check for fifo overflow */ | |
1489 | if (status & LADFUL) { | |
1490 | comedi_error(dev, "fifo overflow"); | |
1491 | /* clear overflow interrupt latch */ | |
1492 | spin_lock_irqsave(&dev->spinlock, flags); | |
1493 | outw(devpriv->adc_fifo_bits | LADFUL, | |
1494 | devpriv->control_status + INT_ADCFIFO); | |
1495 | spin_unlock_irqrestore(&dev->spinlock, flags); | |
1496 | cb_pcidas_cancel(dev, s); | |
1497 | async->events |= COMEDI_CB_EOA | COMEDI_CB_ERROR; | |
1498 | } | |
1499 | ||
1500 | comedi_event(dev, s); | |
1501 | ||
1502 | return IRQ_HANDLED; | |
1503 | } | |
1504 | ||
1505 | static int trimpot_7376_write(struct comedi_device *dev, uint8_t value) | |
1506 | { | |
1507 | static const int bitstream_length = 7; | |
1508 | unsigned int bitstream = value & 0x7f; | |
1509 | unsigned int register_bits; | |
1510 | static const int ad7376_udelay = 1; | |
1511 | ||
1512 | register_bits = cal_enable_bits(dev) | SELECT_TRIMPOT_BIT; | |
1513 | udelay(ad7376_udelay); | |
1514 | outw(register_bits, devpriv->control_status + CALIBRATION_REG); | |
1515 | ||
1516 | write_calibration_bitstream(dev, register_bits, bitstream, | |
1517 | bitstream_length); | |
1518 | ||
1519 | udelay(ad7376_udelay); | |
1520 | outw(cal_enable_bits(dev), devpriv->control_status + CALIBRATION_REG); | |
1521 | ||
1522 | return 0; | |
1523 | } | |
1524 | ||
1525 | /* For 1602/16 only | |
1526 | * ch 0 : adc gain | |
1527 | * ch 1 : adc postgain offset */ | |
1528 | static int trimpot_8402_write(struct comedi_device *dev, unsigned int channel, | |
1529 | uint8_t value) | |
1530 | { | |
1531 | static const int bitstream_length = 10; | |
1532 | unsigned int bitstream = ((channel & 0x3) << 8) | (value & 0xff); | |
1533 | unsigned int register_bits; | |
1534 | static const int ad8402_udelay = 1; | |
1535 | ||
1536 | register_bits = cal_enable_bits(dev) | SELECT_TRIMPOT_BIT; | |
1537 | udelay(ad8402_udelay); | |
1538 | outw(register_bits, devpriv->control_status + CALIBRATION_REG); | |
1539 | ||
1540 | write_calibration_bitstream(dev, register_bits, bitstream, | |
1541 | bitstream_length); | |
1542 | ||
1543 | udelay(ad8402_udelay); | |
1544 | outw(cal_enable_bits(dev), devpriv->control_status + CALIBRATION_REG); | |
1545 | ||
1546 | return 0; | |
1547 | } | |
1548 | ||
1549 | static int wait_for_nvram_ready(unsigned long s5933_base_addr) | |
1550 | { | |
1551 | static const int timeout = 1000; | |
1552 | unsigned int i; | |
1553 | ||
1554 | for (i = 0; i < timeout; i++) { | |
1555 | if ((inb(s5933_base_addr + | |
1556 | AMCC_OP_REG_MCSR_NVCMD) & MCSR_NV_BUSY) | |
1557 | == 0) | |
1558 | return 0; | |
1559 | udelay(1); | |
1560 | } | |
1561 | return -1; | |
1562 | } | |
1563 | ||
1564 | static int nvram_read(struct comedi_device *dev, unsigned int address, | |
1565 | uint8_t *data) | |
1566 | { | |
1567 | unsigned long iobase = devpriv->s5933_config; | |
1568 | ||
1569 | if (wait_for_nvram_ready(iobase) < 0) | |
1570 | return -ETIMEDOUT; | |
1571 | ||
1572 | outb(MCSR_NV_ENABLE | MCSR_NV_LOAD_LOW_ADDR, | |
1573 | iobase + AMCC_OP_REG_MCSR_NVCMD); | |
1574 | outb(address & 0xff, iobase + AMCC_OP_REG_MCSR_NVDATA); | |
1575 | outb(MCSR_NV_ENABLE | MCSR_NV_LOAD_HIGH_ADDR, | |
1576 | iobase + AMCC_OP_REG_MCSR_NVCMD); | |
1577 | outb((address >> 8) & 0xff, iobase + AMCC_OP_REG_MCSR_NVDATA); | |
1578 | outb(MCSR_NV_ENABLE | MCSR_NV_READ, iobase + AMCC_OP_REG_MCSR_NVCMD); | |
1579 | ||
1580 | if (wait_for_nvram_ready(iobase) < 0) | |
1581 | return -ETIMEDOUT; | |
1582 | ||
1583 | *data = inb(iobase + AMCC_OP_REG_MCSR_NVDATA); | |
1584 | ||
1585 | return 0; | |
1586 | } | |
1587 | ||
1588 | static int cb_pcidas_attach(struct comedi_device *dev, | |
1589 | struct comedi_devconfig *it) | |
1590 | { | |
1591 | struct comedi_subdevice *s; | |
1592 | struct pci_dev *pcidev = NULL; | |
1593 | int index; | |
1594 | int i; | |
1595 | int ret; | |
1596 | ||
1597 | /* | |
1598 | * Allocate the private structure area. | |
1599 | */ | |
1600 | if (alloc_private(dev, sizeof(struct cb_pcidas_private)) < 0) | |
1601 | return -ENOMEM; | |
1602 | ||
1603 | /* | |
1604 | * Probe the device to determine what device in the series it is. | |
1605 | */ | |
1606 | ||
1607 | for_each_pci_dev(pcidev) { | |
1608 | /* is it not a computer boards card? */ | |
1609 | if (pcidev->vendor != PCI_VENDOR_ID_CB) | |
1610 | continue; | |
1611 | /* loop through cards supported by this driver */ | |
1612 | for (index = 0; index < ARRAY_SIZE(cb_pcidas_boards); index++) { | |
1613 | if (cb_pcidas_boards[index].device_id != pcidev->device) | |
1614 | continue; | |
1615 | /* was a particular bus/slot requested? */ | |
1616 | if (it->options[0] || it->options[1]) { | |
1617 | /* are we on the wrong bus/slot? */ | |
1618 | if (pcidev->bus->number != it->options[0] || | |
1619 | PCI_SLOT(pcidev->devfn) != it->options[1]) { | |
1620 | continue; | |
1621 | } | |
1622 | } | |
1623 | devpriv->pci_dev = pcidev; | |
1624 | dev->board_ptr = cb_pcidas_boards + index; | |
1625 | goto found; | |
1626 | } | |
1627 | } | |
1628 | ||
1629 | dev_err(dev->class_dev, | |
1630 | "No supported ComputerBoards/MeasurementComputing card found on requested position\n"); | |
1631 | return -EIO; | |
1632 | ||
1633 | found: | |
1634 | ||
1635 | dev_dbg(dev->class_dev, "Found %s on bus %i, slot %i\n", | |
1636 | cb_pcidas_boards[index].name, pcidev->bus->number, | |
1637 | PCI_SLOT(pcidev->devfn)); | |
1638 | ||
1639 | /* | |
1640 | * Enable PCI device and reserve I/O ports. | |
1641 | */ | |
1642 | if (comedi_pci_enable(pcidev, "cb_pcidas")) { | |
1643 | dev_err(dev->class_dev, | |
1644 | "Failed to enable PCI device and request regions\n"); | |
1645 | return -EIO; | |
1646 | } | |
1647 | /* | |
1648 | * Initialize devpriv->control_status and devpriv->adc_fifo to point to | |
1649 | * their base address. | |
1650 | */ | |
1651 | devpriv->s5933_config = | |
1652 | pci_resource_start(devpriv->pci_dev, S5933_BADRINDEX); | |
1653 | devpriv->control_status = | |
1654 | pci_resource_start(devpriv->pci_dev, CONT_STAT_BADRINDEX); | |
1655 | devpriv->adc_fifo = | |
1656 | pci_resource_start(devpriv->pci_dev, ADC_FIFO_BADRINDEX); | |
1657 | devpriv->pacer_counter_dio = | |
1658 | pci_resource_start(devpriv->pci_dev, PACER_BADRINDEX); | |
1659 | if (thisboard->ao_nchan) { | |
1660 | devpriv->ao_registers = | |
1661 | pci_resource_start(devpriv->pci_dev, AO_BADRINDEX); | |
1662 | } | |
1663 | /* disable and clear interrupts on amcc s5933 */ | |
1664 | outl(INTCSR_INBOX_INTR_STATUS, | |
1665 | devpriv->s5933_config + AMCC_OP_REG_INTCSR); | |
1666 | ||
1667 | /* get irq */ | |
1668 | if (request_irq(devpriv->pci_dev->irq, cb_pcidas_interrupt, | |
1669 | IRQF_SHARED, "cb_pcidas", dev)) { | |
1670 | dev_dbg(dev->class_dev, "unable to allocate irq %d\n", | |
1671 | devpriv->pci_dev->irq); | |
1672 | return -EINVAL; | |
1673 | } | |
1674 | dev->irq = devpriv->pci_dev->irq; | |
1675 | ||
1676 | /* Initialize dev->board_name */ | |
1677 | dev->board_name = thisboard->name; | |
1678 | ||
1679 | ret = comedi_alloc_subdevices(dev, 7); | |
1680 | if (ret) | |
1681 | return ret; | |
1682 | ||
1683 | s = dev->subdevices + 0; | |
1684 | /* analog input subdevice */ | |
1685 | dev->read_subdev = s; | |
1686 | s->type = COMEDI_SUBD_AI; | |
1687 | s->subdev_flags = SDF_READABLE | SDF_GROUND | SDF_DIFF | SDF_CMD_READ; | |
1688 | /* WARNING: Number of inputs in differential mode is ignored */ | |
1689 | s->n_chan = thisboard->ai_se_chans; | |
1690 | s->len_chanlist = thisboard->ai_se_chans; | |
1691 | s->maxdata = (1 << thisboard->ai_bits) - 1; | |
1692 | s->range_table = thisboard->ranges; | |
1693 | s->insn_read = cb_pcidas_ai_rinsn; | |
1694 | s->insn_config = ai_config_insn; | |
1695 | s->do_cmd = cb_pcidas_ai_cmd; | |
1696 | s->do_cmdtest = cb_pcidas_ai_cmdtest; | |
1697 | s->cancel = cb_pcidas_cancel; | |
1698 | ||
1699 | /* analog output subdevice */ | |
1700 | s = dev->subdevices + 1; | |
1701 | if (thisboard->ao_nchan) { | |
1702 | s->type = COMEDI_SUBD_AO; | |
1703 | s->subdev_flags = SDF_READABLE | SDF_WRITABLE | SDF_GROUND; | |
1704 | s->n_chan = thisboard->ao_nchan; | |
1705 | /* analog out resolution is the same as analog input resolution, so use ai_bits */ | |
1706 | s->maxdata = (1 << thisboard->ai_bits) - 1; | |
1707 | s->range_table = &cb_pcidas_ao_ranges; | |
1708 | s->insn_read = cb_pcidas_ao_readback_insn; | |
1709 | if (thisboard->has_ao_fifo) { | |
1710 | dev->write_subdev = s; | |
1711 | s->subdev_flags |= SDF_CMD_WRITE; | |
1712 | s->insn_write = cb_pcidas_ao_fifo_winsn; | |
1713 | s->do_cmdtest = cb_pcidas_ao_cmdtest; | |
1714 | s->do_cmd = cb_pcidas_ao_cmd; | |
1715 | s->cancel = cb_pcidas_ao_cancel; | |
1716 | } else { | |
1717 | s->insn_write = cb_pcidas_ao_nofifo_winsn; | |
1718 | } | |
1719 | } else { | |
1720 | s->type = COMEDI_SUBD_UNUSED; | |
1721 | } | |
1722 | ||
1723 | /* 8255 */ | |
1724 | s = dev->subdevices + 2; | |
1725 | subdev_8255_init(dev, s, NULL, devpriv->pacer_counter_dio + DIO_8255); | |
1726 | ||
1727 | /* serial EEPROM, */ | |
1728 | s = dev->subdevices + 3; | |
1729 | s->type = COMEDI_SUBD_MEMORY; | |
1730 | s->subdev_flags = SDF_READABLE | SDF_INTERNAL; | |
1731 | s->n_chan = 256; | |
1732 | s->maxdata = 0xff; | |
1733 | s->insn_read = eeprom_read_insn; | |
1734 | ||
1735 | /* 8800 caldac */ | |
1736 | s = dev->subdevices + 4; | |
1737 | s->type = COMEDI_SUBD_CALIB; | |
1738 | s->subdev_flags = SDF_READABLE | SDF_WRITABLE | SDF_INTERNAL; | |
1739 | s->n_chan = NUM_CHANNELS_8800; | |
1740 | s->maxdata = 0xff; | |
1741 | s->insn_read = caldac_read_insn; | |
1742 | s->insn_write = caldac_write_insn; | |
1743 | for (i = 0; i < s->n_chan; i++) | |
1744 | caldac_8800_write(dev, i, s->maxdata / 2); | |
1745 | ||
1746 | /* trim potentiometer */ | |
1747 | s = dev->subdevices + 5; | |
1748 | s->type = COMEDI_SUBD_CALIB; | |
1749 | s->subdev_flags = SDF_READABLE | SDF_WRITABLE | SDF_INTERNAL; | |
1750 | if (thisboard->trimpot == AD7376) { | |
1751 | s->n_chan = NUM_CHANNELS_7376; | |
1752 | s->maxdata = 0x7f; | |
1753 | } else { | |
1754 | s->n_chan = NUM_CHANNELS_8402; | |
1755 | s->maxdata = 0xff; | |
1756 | } | |
1757 | s->insn_read = trimpot_read_insn; | |
1758 | s->insn_write = trimpot_write_insn; | |
1759 | for (i = 0; i < s->n_chan; i++) | |
1760 | cb_pcidas_trimpot_write(dev, i, s->maxdata / 2); | |
1761 | ||
1762 | /* dac08 caldac */ | |
1763 | s = dev->subdevices + 6; | |
1764 | if (thisboard->has_dac08) { | |
1765 | s->type = COMEDI_SUBD_CALIB; | |
1766 | s->subdev_flags = SDF_READABLE | SDF_WRITABLE | SDF_INTERNAL; | |
1767 | s->n_chan = NUM_CHANNELS_DAC08; | |
1768 | s->insn_read = dac08_read_insn; | |
1769 | s->insn_write = dac08_write_insn; | |
1770 | s->maxdata = 0xff; | |
1771 | dac08_write(dev, s->maxdata / 2); | |
1772 | } else | |
1773 | s->type = COMEDI_SUBD_UNUSED; | |
1774 | ||
1775 | /* make sure mailbox 4 is empty */ | |
1776 | inl(devpriv->s5933_config + AMCC_OP_REG_IMB4); | |
1777 | /* Set bits to enable incoming mailbox interrupts on amcc s5933. */ | |
1778 | devpriv->s5933_intcsr_bits = | |
1779 | INTCSR_INBOX_BYTE(3) | INTCSR_INBOX_SELECT(3) | | |
1780 | INTCSR_INBOX_FULL_INT; | |
1781 | /* clear and enable interrupt on amcc s5933 */ | |
1782 | outl(devpriv->s5933_intcsr_bits | INTCSR_INBOX_INTR_STATUS, | |
1783 | devpriv->s5933_config + AMCC_OP_REG_INTCSR); | |
1784 | ||
1785 | return 1; | |
1786 | } | |
1787 | ||
1788 | static void cb_pcidas_detach(struct comedi_device *dev) | |
1789 | { | |
1790 | if (devpriv) { | |
1791 | if (devpriv->s5933_config) { | |
1792 | outl(INTCSR_INBOX_INTR_STATUS, | |
1793 | devpriv->s5933_config + AMCC_OP_REG_INTCSR); | |
1794 | } | |
1795 | } | |
1796 | if (dev->irq) | |
1797 | free_irq(dev->irq, dev); | |
1798 | if (dev->subdevices) | |
1799 | subdev_8255_cleanup(dev, dev->subdevices + 2); | |
1800 | if (devpriv && devpriv->pci_dev) { | |
1801 | if (devpriv->s5933_config) | |
1802 | comedi_pci_disable(devpriv->pci_dev); | |
1803 | pci_dev_put(devpriv->pci_dev); | |
1804 | } | |
1805 | } | |
1806 | ||
1807 | static struct comedi_driver cb_pcidas_driver = { | |
1808 | .driver_name = "cb_pcidas", | |
1809 | .module = THIS_MODULE, | |
1810 | .attach = cb_pcidas_attach, | |
1811 | .detach = cb_pcidas_detach, | |
1812 | }; | |
1813 | ||
1814 | static int __devinit cb_pcidas_pci_probe(struct pci_dev *dev, | |
1815 | const struct pci_device_id *ent) | |
1816 | { | |
1817 | return comedi_pci_auto_config(dev, &cb_pcidas_driver); | |
1818 | } | |
1819 | ||
1820 | static void __devexit cb_pcidas_pci_remove(struct pci_dev *dev) | |
1821 | { | |
1822 | comedi_pci_auto_unconfig(dev); | |
1823 | } | |
1824 | ||
1825 | static DEFINE_PCI_DEVICE_TABLE(cb_pcidas_pci_table) = { | |
1826 | { PCI_DEVICE(PCI_VENDOR_ID_CB, 0x0001) }, | |
1827 | { PCI_DEVICE(PCI_VENDOR_ID_CB, 0x000f) }, | |
1828 | { PCI_DEVICE(PCI_VENDOR_ID_CB, 0x0010) }, | |
1829 | { PCI_DEVICE(PCI_VENDOR_ID_CB, 0x0019) }, | |
1830 | { PCI_DEVICE(PCI_VENDOR_ID_CB, 0x001c) }, | |
1831 | { PCI_DEVICE(PCI_VENDOR_ID_CB, 0x004c) }, | |
1832 | { PCI_DEVICE(PCI_VENDOR_ID_CB, 0x001a) }, | |
1833 | { PCI_DEVICE(PCI_VENDOR_ID_CB, 0x001b) }, | |
1834 | { 0 } | |
1835 | }; | |
1836 | MODULE_DEVICE_TABLE(pci, cb_pcidas_pci_table); | |
1837 | ||
1838 | static struct pci_driver cb_pcidas_pci_driver = { | |
1839 | .name = "cb_pcidas", | |
1840 | .id_table = cb_pcidas_pci_table, | |
1841 | .probe = cb_pcidas_pci_probe, | |
1842 | .remove = __devexit_p(cb_pcidas_pci_remove) | |
1843 | }; | |
1844 | module_comedi_pci_driver(cb_pcidas_driver, cb_pcidas_pci_driver); | |
1845 | ||
1846 | MODULE_AUTHOR("Comedi http://www.comedi.org"); | |
1847 | MODULE_DESCRIPTION("Comedi low-level driver"); | |
1848 | MODULE_LICENSE("GPL"); |