xref: /openbmc/linux/include/uapi/linux/comedi.h (revision df0e68c1)
1 /* SPDX-License-Identifier: LGPL-2.0+ WITH Linux-syscall-note */
2 /*
3  * comedi.h
4  * header file for COMEDI user API
5  *
6  * COMEDI - Linux Control and Measurement Device Interface
7  * Copyright (C) 1998-2001 David A. Schleef <ds@schleef.org>
8  */
9 
10 #ifndef _COMEDI_H
11 #define _COMEDI_H
12 
13 #define COMEDI_MAJORVERSION	0
14 #define COMEDI_MINORVERSION	7
15 #define COMEDI_MICROVERSION	76
16 #define VERSION	"0.7.76"
17 
18 /* comedi's major device number */
19 #define COMEDI_MAJOR 98
20 
21 /*
22  * maximum number of minor devices.  This can be increased, although
23  * kernel structures are currently statically allocated, thus you
24  * don't want this to be much more than you actually use.
25  */
26 #define COMEDI_NDEVICES 16
27 
28 /* number of config options in the config structure */
29 #define COMEDI_NDEVCONFOPTS 32
30 
31 /*
32  * NOTE: 'comedi_config --init-data' is deprecated
33  *
34  * The following indexes in the config options were used by
35  * comedi_config to pass firmware blobs from user space to the
36  * comedi drivers. The request_firmware() hotplug interface is
37  * now used by all comedi drivers instead.
38  */
39 
40 /* length of nth chunk of firmware data -*/
41 #define COMEDI_DEVCONF_AUX_DATA3_LENGTH		25
42 #define COMEDI_DEVCONF_AUX_DATA2_LENGTH		26
43 #define COMEDI_DEVCONF_AUX_DATA1_LENGTH		27
44 #define COMEDI_DEVCONF_AUX_DATA0_LENGTH		28
45 /* most significant 32 bits of pointer address (if needed) */
46 #define COMEDI_DEVCONF_AUX_DATA_HI		29
47 /* least significant 32 bits of pointer address */
48 #define COMEDI_DEVCONF_AUX_DATA_LO		30
49 #define COMEDI_DEVCONF_AUX_DATA_LENGTH		31	/* total data length */
50 
51 /* max length of device and driver names */
52 #define COMEDI_NAMELEN 20
53 
54 /* packs and unpacks a channel/range number */
55 
56 #define CR_PACK(chan, rng, aref)					\
57 	((((aref) & 0x3) << 24) | (((rng) & 0xff) << 16) | (chan))
58 #define CR_PACK_FLAGS(chan, range, aref, flags)				\
59 	(CR_PACK(chan, range, aref) | ((flags) & CR_FLAGS_MASK))
60 
61 #define CR_CHAN(a)	((a) & 0xffff)
62 #define CR_RANGE(a)	(((a) >> 16) & 0xff)
63 #define CR_AREF(a)	(((a) >> 24) & 0x03)
64 
65 #define CR_FLAGS_MASK	0xfc000000
66 #define CR_ALT_FILTER	0x04000000
67 #define CR_DITHER	CR_ALT_FILTER
68 #define CR_DEGLITCH	CR_ALT_FILTER
69 #define CR_ALT_SOURCE	0x08000000
70 #define CR_EDGE		0x40000000
71 #define CR_INVERT	0x80000000
72 
73 #define AREF_GROUND	0x00	/* analog ref = analog ground */
74 #define AREF_COMMON	0x01	/* analog ref = analog common */
75 #define AREF_DIFF	0x02	/* analog ref = differential */
76 #define AREF_OTHER	0x03	/* analog ref = other (undefined) */
77 
78 /* counters -- these are arbitrary values */
79 #define GPCT_RESET		0x0001
80 #define GPCT_SET_SOURCE		0x0002
81 #define GPCT_SET_GATE		0x0004
82 #define GPCT_SET_DIRECTION	0x0008
83 #define GPCT_SET_OPERATION	0x0010
84 #define GPCT_ARM		0x0020
85 #define GPCT_DISARM		0x0040
86 #define GPCT_GET_INT_CLK_FRQ	0x0080
87 
88 #define GPCT_INT_CLOCK		0x0001
89 #define GPCT_EXT_PIN		0x0002
90 #define GPCT_NO_GATE		0x0004
91 #define GPCT_UP			0x0008
92 #define GPCT_DOWN		0x0010
93 #define GPCT_HWUD		0x0020
94 #define GPCT_SIMPLE_EVENT	0x0040
95 #define GPCT_SINGLE_PERIOD	0x0080
96 #define GPCT_SINGLE_PW		0x0100
97 #define GPCT_CONT_PULSE_OUT	0x0200
98 #define GPCT_SINGLE_PULSE_OUT	0x0400
99 
100 /* instructions */
101 
102 #define INSN_MASK_WRITE		0x8000000
103 #define INSN_MASK_READ		0x4000000
104 #define INSN_MASK_SPECIAL	0x2000000
105 
106 #define INSN_READ		(0 | INSN_MASK_READ)
107 #define INSN_WRITE		(1 | INSN_MASK_WRITE)
108 #define INSN_BITS		(2 | INSN_MASK_READ | INSN_MASK_WRITE)
109 #define INSN_CONFIG		(3 | INSN_MASK_READ | INSN_MASK_WRITE)
110 #define INSN_DEVICE_CONFIG	(INSN_CONFIG | INSN_MASK_SPECIAL)
111 #define INSN_GTOD		(4 | INSN_MASK_READ | INSN_MASK_SPECIAL)
112 #define INSN_WAIT		(5 | INSN_MASK_WRITE | INSN_MASK_SPECIAL)
113 #define INSN_INTTRIG		(6 | INSN_MASK_WRITE | INSN_MASK_SPECIAL)
114 
115 /* command flags */
116 /* These flags are used in comedi_cmd structures */
117 
118 #define CMDF_BOGUS		0x00000001	/* do the motions */
119 
120 /* try to use a real-time interrupt while performing command */
121 #define CMDF_PRIORITY		0x00000008
122 
123 /* wake up on end-of-scan events */
124 #define CMDF_WAKE_EOS		0x00000020
125 
126 #define CMDF_WRITE		0x00000040
127 
128 #define CMDF_RAWDATA		0x00000080
129 
130 /* timer rounding definitions */
131 #define CMDF_ROUND_MASK		0x00030000
132 #define CMDF_ROUND_NEAREST	0x00000000
133 #define CMDF_ROUND_DOWN		0x00010000
134 #define CMDF_ROUND_UP		0x00020000
135 #define CMDF_ROUND_UP_NEXT	0x00030000
136 
137 #define COMEDI_EV_START		0x00040000
138 #define COMEDI_EV_SCAN_BEGIN	0x00080000
139 #define COMEDI_EV_CONVERT	0x00100000
140 #define COMEDI_EV_SCAN_END	0x00200000
141 #define COMEDI_EV_STOP		0x00400000
142 
143 /* compatibility definitions */
144 #define TRIG_BOGUS		CMDF_BOGUS
145 #define TRIG_RT			CMDF_PRIORITY
146 #define TRIG_WAKE_EOS		CMDF_WAKE_EOS
147 #define TRIG_WRITE		CMDF_WRITE
148 #define TRIG_ROUND_MASK		CMDF_ROUND_MASK
149 #define TRIG_ROUND_NEAREST	CMDF_ROUND_NEAREST
150 #define TRIG_ROUND_DOWN		CMDF_ROUND_DOWN
151 #define TRIG_ROUND_UP		CMDF_ROUND_UP
152 #define TRIG_ROUND_UP_NEXT	CMDF_ROUND_UP_NEXT
153 
154 /* trigger sources */
155 
156 #define TRIG_ANY	0xffffffff
157 #define TRIG_INVALID	0x00000000
158 
159 #define TRIG_NONE	0x00000001 /* never trigger */
160 #define TRIG_NOW	0x00000002 /* trigger now + N ns */
161 #define TRIG_FOLLOW	0x00000004 /* trigger on next lower level trig */
162 #define TRIG_TIME	0x00000008 /* trigger at time N ns */
163 #define TRIG_TIMER	0x00000010 /* trigger at rate N ns */
164 #define TRIG_COUNT	0x00000020 /* trigger when count reaches N */
165 #define TRIG_EXT	0x00000040 /* trigger on external signal N */
166 #define TRIG_INT	0x00000080 /* trigger on comedi-internal signal N */
167 #define TRIG_OTHER	0x00000100 /* driver defined */
168 
169 /* subdevice flags */
170 
171 #define SDF_BUSY	0x0001	/* device is busy */
172 #define SDF_BUSY_OWNER	0x0002	/* device is busy with your job */
173 #define SDF_LOCKED	0x0004	/* subdevice is locked */
174 #define SDF_LOCK_OWNER	0x0008	/* you own lock */
175 #define SDF_MAXDATA	0x0010	/* maxdata depends on channel */
176 #define SDF_FLAGS	0x0020	/* flags depend on channel */
177 #define SDF_RANGETYPE	0x0040	/* range type depends on channel */
178 #define SDF_PWM_COUNTER 0x0080	/* PWM can automatically switch off */
179 #define SDF_PWM_HBRIDGE 0x0100	/* PWM is signed (H-bridge) */
180 #define SDF_CMD		0x1000	/* can do commands (deprecated) */
181 #define SDF_SOFT_CALIBRATED	0x2000 /* subdevice uses software calibration */
182 #define SDF_CMD_WRITE		0x4000 /* can do output commands */
183 #define SDF_CMD_READ		0x8000 /* can do input commands */
184 
185 /* subdevice can be read (e.g. analog input) */
186 #define SDF_READABLE	0x00010000
187 /* subdevice can be written (e.g. analog output) */
188 #define SDF_WRITABLE	0x00020000
189 #define SDF_WRITEABLE	SDF_WRITABLE	/* spelling error in API */
190 /* subdevice does not have externally visible lines */
191 #define SDF_INTERNAL	0x00040000
192 #define SDF_GROUND	0x00100000	/* can do aref=ground */
193 #define SDF_COMMON	0x00200000	/* can do aref=common */
194 #define SDF_DIFF	0x00400000	/* can do aref=diff */
195 #define SDF_OTHER	0x00800000	/* can do aref=other */
196 #define SDF_DITHER	0x01000000	/* can do dithering */
197 #define SDF_DEGLITCH	0x02000000	/* can do deglitching */
198 #define SDF_MMAP	0x04000000	/* can do mmap() */
199 #define SDF_RUNNING	0x08000000	/* subdevice is acquiring data */
200 #define SDF_LSAMPL	0x10000000	/* subdevice uses 32-bit samples */
201 #define SDF_PACKED	0x20000000	/* subdevice can do packed DIO */
202 
203 /* subdevice types */
204 
205 /**
206  * enum comedi_subdevice_type - COMEDI subdevice types
207  * @COMEDI_SUBD_UNUSED:		Unused subdevice.
208  * @COMEDI_SUBD_AI:		Analog input.
209  * @COMEDI_SUBD_AO:		Analog output.
210  * @COMEDI_SUBD_DI:		Digital input.
211  * @COMEDI_SUBD_DO:		Digital output.
212  * @COMEDI_SUBD_DIO:		Digital input/output.
213  * @COMEDI_SUBD_COUNTER:	Counter.
214  * @COMEDI_SUBD_TIMER:		Timer.
215  * @COMEDI_SUBD_MEMORY:		Memory, EEPROM, DPRAM.
216  * @COMEDI_SUBD_CALIB:		Calibration DACs.
217  * @COMEDI_SUBD_PROC:		Processor, DSP.
218  * @COMEDI_SUBD_SERIAL:		Serial I/O.
219  * @COMEDI_SUBD_PWM:		Pulse-Width Modulation output.
220  */
221 enum comedi_subdevice_type {
222 	COMEDI_SUBD_UNUSED,
223 	COMEDI_SUBD_AI,
224 	COMEDI_SUBD_AO,
225 	COMEDI_SUBD_DI,
226 	COMEDI_SUBD_DO,
227 	COMEDI_SUBD_DIO,
228 	COMEDI_SUBD_COUNTER,
229 	COMEDI_SUBD_TIMER,
230 	COMEDI_SUBD_MEMORY,
231 	COMEDI_SUBD_CALIB,
232 	COMEDI_SUBD_PROC,
233 	COMEDI_SUBD_SERIAL,
234 	COMEDI_SUBD_PWM
235 };
236 
237 /* configuration instructions */
238 
239 /**
240  * enum comedi_io_direction - COMEDI I/O directions
241  * @COMEDI_INPUT:	Input.
242  * @COMEDI_OUTPUT:	Output.
243  * @COMEDI_OPENDRAIN:	Open-drain (or open-collector) output.
244  *
245  * These are used by the %INSN_CONFIG_DIO_QUERY configuration instruction to
246  * report a direction.  They may also be used in other places where a direction
247  * needs to be specified.
248  */
249 enum comedi_io_direction {
250 	COMEDI_INPUT = 0,
251 	COMEDI_OUTPUT = 1,
252 	COMEDI_OPENDRAIN = 2
253 };
254 
255 /**
256  * enum configuration_ids - COMEDI configuration instruction codes
257  * @INSN_CONFIG_DIO_INPUT:	Configure digital I/O as input.
258  * @INSN_CONFIG_DIO_OUTPUT:	Configure digital I/O as output.
259  * @INSN_CONFIG_DIO_OPENDRAIN:	Configure digital I/O as open-drain (or open
260  *				collector) output.
261  * @INSN_CONFIG_ANALOG_TRIG:	Configure analog trigger.
262  * @INSN_CONFIG_ALT_SOURCE:	Configure alternate input source.
263  * @INSN_CONFIG_DIGITAL_TRIG:	Configure digital trigger.
264  * @INSN_CONFIG_BLOCK_SIZE:	Configure block size for DMA transfers.
265  * @INSN_CONFIG_TIMER_1:	Configure divisor for external clock.
266  * @INSN_CONFIG_FILTER:		Configure a filter.
267  * @INSN_CONFIG_CHANGE_NOTIFY:	Configure change notification for digital
268  *				inputs.  (New drivers should use
269  *				%INSN_CONFIG_DIGITAL_TRIG instead.)
270  * @INSN_CONFIG_SERIAL_CLOCK:	Configure clock for serial I/O.
271  * @INSN_CONFIG_BIDIRECTIONAL_DATA: Send and receive byte over serial I/O.
272  * @INSN_CONFIG_DIO_QUERY:	Query direction of digital I/O channel.
273  * @INSN_CONFIG_PWM_OUTPUT:	Configure pulse-width modulator output.
274  * @INSN_CONFIG_GET_PWM_OUTPUT:	Get pulse-width modulator output configuration.
275  * @INSN_CONFIG_ARM:		Arm a subdevice or channel.
276  * @INSN_CONFIG_DISARM:		Disarm a subdevice or channel.
277  * @INSN_CONFIG_GET_COUNTER_STATUS: Get counter status.
278  * @INSN_CONFIG_RESET:		Reset a subdevice or channel.
279  * @INSN_CONFIG_GPCT_SINGLE_PULSE_GENERATOR: Configure counter/timer as
280  *				single pulse generator.
281  * @INSN_CONFIG_GPCT_PULSE_TRAIN_GENERATOR: Configure counter/timer as
282  *				pulse train generator.
283  * @INSN_CONFIG_GPCT_QUADRATURE_ENCODER: Configure counter as a quadrature
284  *				encoder.
285  * @INSN_CONFIG_SET_GATE_SRC:	Set counter/timer gate source.
286  * @INSN_CONFIG_GET_GATE_SRC:	Get counter/timer gate source.
287  * @INSN_CONFIG_SET_CLOCK_SRC:	Set counter/timer master clock source.
288  * @INSN_CONFIG_GET_CLOCK_SRC:	Get counter/timer master clock source.
289  * @INSN_CONFIG_SET_OTHER_SRC:	Set counter/timer "other" source.
290  * @INSN_CONFIG_GET_HARDWARE_BUFFER_SIZE: Get size (in bytes) of subdevice's
291  *				on-board FIFOs used during streaming
292  *				input/output.
293  * @INSN_CONFIG_SET_COUNTER_MODE: Set counter/timer mode.
294  * @INSN_CONFIG_8254_SET_MODE:	(Deprecated) Same as
295  *				%INSN_CONFIG_SET_COUNTER_MODE.
296  * @INSN_CONFIG_8254_READ_STATUS: Read status of 8254 counter channel.
297  * @INSN_CONFIG_SET_ROUTING:	Set routing for a channel.
298  * @INSN_CONFIG_GET_ROUTING:	Get routing for a channel.
299  * @INSN_CONFIG_PWM_SET_PERIOD: Set PWM period in nanoseconds.
300  * @INSN_CONFIG_PWM_GET_PERIOD: Get PWM period in nanoseconds.
301  * @INSN_CONFIG_GET_PWM_STATUS: Get PWM status.
302  * @INSN_CONFIG_PWM_SET_H_BRIDGE: Set PWM H bridge duty cycle and polarity for
303  *				a relay simultaneously.
304  * @INSN_CONFIG_PWM_GET_H_BRIDGE: Get PWM H bridge duty cycle and polarity.
305  * @INSN_CONFIG_GET_CMD_TIMING_CONSTRAINTS: Get the hardware timing restraints,
306  *				regardless of trigger sources.
307  */
308 enum configuration_ids {
309 	INSN_CONFIG_DIO_INPUT = COMEDI_INPUT,
310 	INSN_CONFIG_DIO_OUTPUT = COMEDI_OUTPUT,
311 	INSN_CONFIG_DIO_OPENDRAIN = COMEDI_OPENDRAIN,
312 	INSN_CONFIG_ANALOG_TRIG = 16,
313 /*	INSN_CONFIG_WAVEFORM = 17, */
314 /*	INSN_CONFIG_TRIG = 18, */
315 /*	INSN_CONFIG_COUNTER = 19, */
316 	INSN_CONFIG_ALT_SOURCE = 20,
317 	INSN_CONFIG_DIGITAL_TRIG = 21,
318 	INSN_CONFIG_BLOCK_SIZE = 22,
319 	INSN_CONFIG_TIMER_1 = 23,
320 	INSN_CONFIG_FILTER = 24,
321 	INSN_CONFIG_CHANGE_NOTIFY = 25,
322 
323 	INSN_CONFIG_SERIAL_CLOCK = 26,	/*ALPHA*/
324 	INSN_CONFIG_BIDIRECTIONAL_DATA = 27,
325 	INSN_CONFIG_DIO_QUERY = 28,
326 	INSN_CONFIG_PWM_OUTPUT = 29,
327 	INSN_CONFIG_GET_PWM_OUTPUT = 30,
328 	INSN_CONFIG_ARM = 31,
329 	INSN_CONFIG_DISARM = 32,
330 	INSN_CONFIG_GET_COUNTER_STATUS = 33,
331 	INSN_CONFIG_RESET = 34,
332 	INSN_CONFIG_GPCT_SINGLE_PULSE_GENERATOR = 1001,
333 	INSN_CONFIG_GPCT_PULSE_TRAIN_GENERATOR = 1002,
334 	INSN_CONFIG_GPCT_QUADRATURE_ENCODER = 1003,
335 	INSN_CONFIG_SET_GATE_SRC = 2001,
336 	INSN_CONFIG_GET_GATE_SRC = 2002,
337 	INSN_CONFIG_SET_CLOCK_SRC = 2003,
338 	INSN_CONFIG_GET_CLOCK_SRC = 2004,
339 	INSN_CONFIG_SET_OTHER_SRC = 2005,
340 	INSN_CONFIG_GET_HARDWARE_BUFFER_SIZE = 2006,
341 	INSN_CONFIG_SET_COUNTER_MODE = 4097,
342 	INSN_CONFIG_8254_SET_MODE = INSN_CONFIG_SET_COUNTER_MODE,
343 	INSN_CONFIG_8254_READ_STATUS = 4098,
344 	INSN_CONFIG_SET_ROUTING = 4099,
345 	INSN_CONFIG_GET_ROUTING = 4109,
346 	INSN_CONFIG_PWM_SET_PERIOD = 5000,
347 	INSN_CONFIG_PWM_GET_PERIOD = 5001,
348 	INSN_CONFIG_GET_PWM_STATUS = 5002,
349 	INSN_CONFIG_PWM_SET_H_BRIDGE = 5003,
350 	INSN_CONFIG_PWM_GET_H_BRIDGE = 5004,
351 	INSN_CONFIG_GET_CMD_TIMING_CONSTRAINTS = 5005,
352 };
353 
354 /**
355  * enum device_configuration_ids - COMEDI configuration instruction codes global
356  * to an entire device.
357  * @INSN_DEVICE_CONFIG_TEST_ROUTE:	Validate the possibility of a
358  *					globally-named route
359  * @INSN_DEVICE_CONFIG_CONNECT_ROUTE:	Connect a globally-named route
360  * @INSN_DEVICE_CONFIG_DISCONNECT_ROUTE:Disconnect a globally-named route
361  * @INSN_DEVICE_CONFIG_GET_ROUTES:	Get a list of all globally-named routes
362  *					that are valid for a particular device.
363  */
364 enum device_config_route_ids {
365 	INSN_DEVICE_CONFIG_TEST_ROUTE = 0,
366 	INSN_DEVICE_CONFIG_CONNECT_ROUTE = 1,
367 	INSN_DEVICE_CONFIG_DISCONNECT_ROUTE = 2,
368 	INSN_DEVICE_CONFIG_GET_ROUTES = 3,
369 };
370 
371 /**
372  * enum comedi_digital_trig_op - operations for configuring a digital trigger
373  * @COMEDI_DIGITAL_TRIG_DISABLE:	Return digital trigger to its default,
374  *					inactive, unconfigured state.
375  * @COMEDI_DIGITAL_TRIG_ENABLE_EDGES:	Set rising and/or falling edge inputs
376  *					that each can fire the trigger.
377  * @COMEDI_DIGITAL_TRIG_ENABLE_LEVELS:	Set a combination of high and/or low
378  *					level inputs that can fire the trigger.
379  *
380  * These are used with the %INSN_CONFIG_DIGITAL_TRIG configuration instruction.
381  * The data for the configuration instruction is as follows...
382  *
383  *   data[%0] = %INSN_CONFIG_DIGITAL_TRIG
384  *
385  *   data[%1] = trigger ID
386  *
387  *   data[%2] = configuration operation
388  *
389  *   data[%3] = configuration parameter 1
390  *
391  *   data[%4] = configuration parameter 2
392  *
393  *   data[%5] = configuration parameter 3
394  *
395  * The trigger ID (data[%1]) is used to differentiate multiple digital triggers
396  * belonging to the same subdevice.  The configuration operation (data[%2]) is
397  * one of the enum comedi_digital_trig_op values.  The configuration
398  * parameters (data[%3], data[%4], and data[%5]) depend on the operation; they
399  * are not used with %COMEDI_DIGITAL_TRIG_DISABLE.
400  *
401  * For %COMEDI_DIGITAL_TRIG_ENABLE_EDGES and %COMEDI_DIGITAL_TRIG_ENABLE_LEVELS,
402  * configuration parameter 1 (data[%3]) contains a "left-shift" value that
403  * specifies the input corresponding to bit 0 of configuration parameters 2
404  * and 3.  This is useful if the trigger has more than 32 inputs.
405  *
406  * For %COMEDI_DIGITAL_TRIG_ENABLE_EDGES, configuration parameter 2 (data[%4])
407  * specifies which of up to 32 inputs have rising-edge sensitivity, and
408  * configuration parameter 3 (data[%5]) specifies which of up to 32 inputs
409  * have falling-edge sensitivity that can fire the trigger.
410  *
411  * For %COMEDI_DIGITAL_TRIG_ENABLE_LEVELS, configuration parameter 2 (data[%4])
412  * specifies which of up to 32 inputs must be at a high level, and
413  * configuration parameter 3 (data[%5]) specifies which of up to 32 inputs
414  * must be at a low level for the trigger to fire.
415  *
416  * Some sequences of %INSN_CONFIG_DIGITAL_TRIG instructions may have a (partly)
417  * accumulative effect, depending on the low-level driver.  This is useful
418  * when setting up a trigger that has more than 32 inputs, or has a combination
419  * of edge- and level-triggered inputs.
420  */
421 enum comedi_digital_trig_op {
422 	COMEDI_DIGITAL_TRIG_DISABLE = 0,
423 	COMEDI_DIGITAL_TRIG_ENABLE_EDGES = 1,
424 	COMEDI_DIGITAL_TRIG_ENABLE_LEVELS = 2
425 };
426 
427 /**
428  * enum comedi_support_level - support level for a COMEDI feature
429  * @COMEDI_UNKNOWN_SUPPORT:	Unspecified support for feature.
430  * @COMEDI_SUPPORTED:		Feature is supported.
431  * @COMEDI_UNSUPPORTED:		Feature is unsupported.
432  */
433 enum comedi_support_level {
434 	COMEDI_UNKNOWN_SUPPORT = 0,
435 	COMEDI_SUPPORTED,
436 	COMEDI_UNSUPPORTED
437 };
438 
439 /**
440  * enum comedi_counter_status_flags - counter status bits
441  * @COMEDI_COUNTER_ARMED:		Counter is armed.
442  * @COMEDI_COUNTER_COUNTING:		Counter is counting.
443  * @COMEDI_COUNTER_TERMINAL_COUNT:	Counter reached terminal count.
444  *
445  * These bitwise values are used by the %INSN_CONFIG_GET_COUNTER_STATUS
446  * configuration instruction to report the status of a counter.
447  */
448 enum comedi_counter_status_flags {
449 	COMEDI_COUNTER_ARMED = 0x1,
450 	COMEDI_COUNTER_COUNTING = 0x2,
451 	COMEDI_COUNTER_TERMINAL_COUNT = 0x4,
452 };
453 
454 /* ioctls */
455 
456 #define CIO 'd'
457 #define COMEDI_DEVCONFIG _IOW(CIO, 0, struct comedi_devconfig)
458 #define COMEDI_DEVINFO _IOR(CIO, 1, struct comedi_devinfo)
459 #define COMEDI_SUBDINFO _IOR(CIO, 2, struct comedi_subdinfo)
460 #define COMEDI_CHANINFO _IOR(CIO, 3, struct comedi_chaninfo)
461 /* _IOWR(CIO, 4, ...) is reserved */
462 #define COMEDI_LOCK _IO(CIO, 5)
463 #define COMEDI_UNLOCK _IO(CIO, 6)
464 #define COMEDI_CANCEL _IO(CIO, 7)
465 #define COMEDI_RANGEINFO _IOR(CIO, 8, struct comedi_rangeinfo)
466 #define COMEDI_CMD _IOR(CIO, 9, struct comedi_cmd)
467 #define COMEDI_CMDTEST _IOR(CIO, 10, struct comedi_cmd)
468 #define COMEDI_INSNLIST _IOR(CIO, 11, struct comedi_insnlist)
469 #define COMEDI_INSN _IOR(CIO, 12, struct comedi_insn)
470 #define COMEDI_BUFCONFIG _IOR(CIO, 13, struct comedi_bufconfig)
471 #define COMEDI_BUFINFO _IOWR(CIO, 14, struct comedi_bufinfo)
472 #define COMEDI_POLL _IO(CIO, 15)
473 #define COMEDI_SETRSUBD _IO(CIO, 16)
474 #define COMEDI_SETWSUBD _IO(CIO, 17)
475 
476 /* structures */
477 
478 /**
479  * struct comedi_insn - COMEDI instruction
480  * @insn:	COMEDI instruction type (%INSN_xxx).
481  * @n:		Length of @data[].
482  * @data:	Pointer to data array operated on by the instruction.
483  * @subdev:	Subdevice index.
484  * @chanspec:	A packed "chanspec" value consisting of channel number,
485  *		analog range index, analog reference type, and flags.
486  * @unused:	Reserved for future use.
487  *
488  * This is used with the %COMEDI_INSN ioctl, and indirectly with the
489  * %COMEDI_INSNLIST ioctl.
490  */
491 struct comedi_insn {
492 	unsigned int insn;
493 	unsigned int n;
494 	unsigned int __user *data;
495 	unsigned int subdev;
496 	unsigned int chanspec;
497 	unsigned int unused[3];
498 };
499 
500 /**
501  * struct comedi_insnlist - list of COMEDI instructions
502  * @n_insns:	Number of COMEDI instructions.
503  * @insns:	Pointer to array COMEDI instructions.
504  *
505  * This is used with the %COMEDI_INSNLIST ioctl.
506  */
507 struct comedi_insnlist {
508 	unsigned int n_insns;
509 	struct comedi_insn __user *insns;
510 };
511 
512 /**
513  * struct comedi_cmd - COMEDI asynchronous acquisition command details
514  * @subdev:		Subdevice index.
515  * @flags:		Command flags (%CMDF_xxx).
516  * @start_src:		"Start acquisition" trigger source (%TRIG_xxx).
517  * @start_arg:		"Start acquisition" trigger argument.
518  * @scan_begin_src:	"Scan begin" trigger source.
519  * @scan_begin_arg:	"Scan begin" trigger argument.
520  * @convert_src:	"Convert" trigger source.
521  * @convert_arg:	"Convert" trigger argument.
522  * @scan_end_src:	"Scan end" trigger source.
523  * @scan_end_arg:	"Scan end" trigger argument.
524  * @stop_src:		"Stop acquisition" trigger source.
525  * @stop_arg:		"Stop acquisition" trigger argument.
526  * @chanlist:		Pointer to array of "chanspec" values, containing a
527  *			sequence of channel numbers packed with analog range
528  *			index, etc.
529  * @chanlist_len:	Number of channels in sequence.
530  * @data:		Pointer to miscellaneous set-up data (not used).
531  * @data_len:		Length of miscellaneous set-up data.
532  *
533  * This is used with the %COMEDI_CMD or %COMEDI_CMDTEST ioctl to set-up
534  * or validate an asynchronous acquisition command.  The ioctl may modify
535  * the &struct comedi_cmd and copy it back to the caller.
536  *
537  * Optional command @flags values that can be ORed together...
538  *
539  * %CMDF_BOGUS - makes %COMEDI_CMD ioctl return error %EAGAIN instead of
540  * starting the command.
541  *
542  * %CMDF_PRIORITY - requests "hard real-time" processing (which is not
543  * supported in this version of COMEDI).
544  *
545  * %CMDF_WAKE_EOS - requests the command makes data available for reading
546  * after every "scan" period.
547  *
548  * %CMDF_WRITE - marks the command as being in the "write" (to device)
549  * direction.  This does not need to be specified by the caller unless the
550  * subdevice supports commands in either direction.
551  *
552  * %CMDF_RAWDATA - prevents the command from "munging" the data between the
553  * COMEDI sample format and the raw hardware sample format.
554  *
555  * %CMDF_ROUND_NEAREST - requests timing periods to be rounded to nearest
556  * supported values.
557  *
558  * %CMDF_ROUND_DOWN - requests timing periods to be rounded down to supported
559  * values (frequencies rounded up).
560  *
561  * %CMDF_ROUND_UP - requests timing periods to be rounded up to supported
562  * values (frequencies rounded down).
563  *
564  * Trigger source values for @start_src, @scan_begin_src, @convert_src,
565  * @scan_end_src, and @stop_src...
566  *
567  * %TRIG_ANY - "all ones" value used to test which trigger sources are
568  * supported.
569  *
570  * %TRIG_INVALID - "all zeroes" value used to indicate that all requested
571  * trigger sources are invalid.
572  *
573  * %TRIG_NONE - never trigger (often used as a @stop_src value).
574  *
575  * %TRIG_NOW - trigger after '_arg' nanoseconds.
576  *
577  * %TRIG_FOLLOW - trigger follows another event.
578  *
579  * %TRIG_TIMER - trigger every '_arg' nanoseconds.
580  *
581  * %TRIG_COUNT - trigger when count '_arg' is reached.
582  *
583  * %TRIG_EXT - trigger on external signal specified by '_arg'.
584  *
585  * %TRIG_INT - trigger on internal, software trigger specified by '_arg'.
586  *
587  * %TRIG_OTHER - trigger on other, driver-defined signal specified by '_arg'.
588  */
589 struct comedi_cmd {
590 	unsigned int subdev;
591 	unsigned int flags;
592 
593 	unsigned int start_src;
594 	unsigned int start_arg;
595 
596 	unsigned int scan_begin_src;
597 	unsigned int scan_begin_arg;
598 
599 	unsigned int convert_src;
600 	unsigned int convert_arg;
601 
602 	unsigned int scan_end_src;
603 	unsigned int scan_end_arg;
604 
605 	unsigned int stop_src;
606 	unsigned int stop_arg;
607 
608 	unsigned int *chanlist;
609 	unsigned int chanlist_len;
610 
611 	short __user *data;
612 	unsigned int data_len;
613 };
614 
615 /**
616  * struct comedi_chaninfo - used to retrieve per-channel information
617  * @subdev:		Subdevice index.
618  * @maxdata_list:	Optional pointer to per-channel maximum data values.
619  * @flaglist:		Optional pointer to per-channel flags.
620  * @rangelist:		Optional pointer to per-channel range types.
621  * @unused:		Reserved for future use.
622  *
623  * This is used with the %COMEDI_CHANINFO ioctl to get per-channel information
624  * for the subdevice.  Use of this requires knowledge of the number of channels
625  * and subdevice flags obtained using the %COMEDI_SUBDINFO ioctl.
626  *
627  * The @maxdata_list member must be %NULL unless the %SDF_MAXDATA subdevice
628  * flag is set.  The @flaglist member must be %NULL unless the %SDF_FLAGS
629  * subdevice flag is set.  The @rangelist member must be %NULL unless the
630  * %SDF_RANGETYPE subdevice flag is set.  Otherwise, the arrays they point to
631  * must be at least as long as the number of channels.
632  */
633 struct comedi_chaninfo {
634 	unsigned int subdev;
635 	unsigned int __user *maxdata_list;
636 	unsigned int __user *flaglist;
637 	unsigned int __user *rangelist;
638 	unsigned int unused[4];
639 };
640 
641 /**
642  * struct comedi_rangeinfo - used to retrieve the range table for a channel
643  * @range_type:		Encodes subdevice index (bits 27:24), channel index
644  *			(bits 23:16) and range table length (bits 15:0).
645  * @range_ptr:		Pointer to array of @struct comedi_krange to be filled
646  *			in with the range table for the channel or subdevice.
647  *
648  * This is used with the %COMEDI_RANGEINFO ioctl to retrieve the range table
649  * for a specific channel (if the subdevice has the %SDF_RANGETYPE flag set to
650  * indicate that the range table depends on the channel), or for the subdevice
651  * as a whole (if the %SDF_RANGETYPE flag is clear, indicating the range table
652  * is shared by all channels).
653  *
654  * The @range_type value is an input to the ioctl and comes from a previous
655  * use of the %COMEDI_SUBDINFO ioctl (if the %SDF_RANGETYPE flag is clear),
656  * or the %COMEDI_CHANINFO ioctl (if the %SDF_RANGETYPE flag is set).
657  */
658 struct comedi_rangeinfo {
659 	unsigned int range_type;
660 	void __user *range_ptr;
661 };
662 
663 /**
664  * struct comedi_krange - describes a range in a range table
665  * @min:	Minimum value in millionths (1e-6) of a unit.
666  * @max:	Maximum value in millionths (1e-6) of a unit.
667  * @flags:	Indicates the units (in bits 7:0) OR'ed with optional flags.
668  *
669  * A range table is associated with a single channel, or with all channels in a
670  * subdevice, and a list of one or more ranges.  A %struct comedi_krange
671  * describes the physical range of units for one of those ranges.  Sample
672  * values in COMEDI are unsigned from %0 up to some 'maxdata' value.  The
673  * mapping from sample values to physical units is assumed to be nomimally
674  * linear (for the purpose of describing the range), with sample value %0
675  * mapping to @min, and the 'maxdata' sample value mapping to @max.
676  *
677  * The currently defined units are %UNIT_volt (%0), %UNIT_mA (%1), and
678  * %UNIT_none (%2).  The @min and @max values are the physical range multiplied
679  * by 1e6, so a @max value of %1000000 (with %UNIT_volt) represents a maximal
680  * value of 1 volt.
681  *
682  * The only defined flag value is %RF_EXTERNAL (%0x100), indicating that the
683  * range needs to be multiplied by an external reference.
684  */
685 struct comedi_krange {
686 	int min;
687 	int max;
688 	unsigned int flags;
689 };
690 
691 /**
692  * struct comedi_subdinfo - used to retrieve information about a subdevice
693  * @type:		Type of subdevice from &enum comedi_subdevice_type.
694  * @n_chan:		Number of channels the subdevice supports.
695  * @subd_flags:		A mixture of static and dynamic flags describing
696  *			aspects of the subdevice and its current state.
697  * @timer_type:		Timer type.  Always set to %5 ("nanosecond timer").
698  * @len_chanlist:	Maximum length of a channel list if the subdevice
699  *			supports asynchronous acquisition commands.
700  * @maxdata:		Maximum sample value for all channels if the
701  *			%SDF_MAXDATA subdevice flag is clear.
702  * @flags:		Channel flags for all channels if the %SDF_FLAGS
703  *			subdevice flag is clear.
704  * @range_type:		The range type for all channels if the %SDF_RANGETYPE
705  *			subdevice flag is clear.  Encodes the subdevice index
706  *			(bits 27:24), a dummy channel index %0 (bits 23:16),
707  *			and the range table length (bits 15:0).
708  * @settling_time_0:	Not used.
709  * @insn_bits_support:	Set to %COMEDI_SUPPORTED if the subdevice supports the
710  *			%INSN_BITS instruction, or to %COMEDI_UNSUPPORTED if it
711  *			does not.
712  * @unused:		Reserved for future use.
713  *
714  * This is used with the %COMEDI_SUBDINFO ioctl which copies an array of
715  * &struct comedi_subdinfo back to user space, with one element per subdevice.
716  * Use of this requires knowledge of the number of subdevices obtained from
717  * the %COMEDI_DEVINFO ioctl.
718  *
719  * These are the @subd_flags values that may be ORed together...
720  *
721  * %SDF_BUSY - the subdevice is busy processing an asynchronous command or a
722  * synchronous instruction.
723  *
724  * %SDF_BUSY_OWNER - the subdevice is busy processing an asynchronous
725  * acquisition command started on the current file object (the file object
726  * issuing the %COMEDI_SUBDINFO ioctl).
727  *
728  * %SDF_LOCKED - the subdevice is locked by a %COMEDI_LOCK ioctl.
729  *
730  * %SDF_LOCK_OWNER - the subdevice is locked by a %COMEDI_LOCK ioctl from the
731  * current file object.
732  *
733  * %SDF_MAXDATA - maximum sample values are channel-specific.
734  *
735  * %SDF_FLAGS - channel flags are channel-specific.
736  *
737  * %SDF_RANGETYPE - range types are channel-specific.
738  *
739  * %SDF_PWM_COUNTER - PWM can switch off automatically.
740  *
741  * %SDF_PWM_HBRIDGE - or PWM is signed (H-bridge).
742  *
743  * %SDF_CMD - the subdevice supports asynchronous commands.
744  *
745  * %SDF_SOFT_CALIBRATED - the subdevice uses software calibration.
746  *
747  * %SDF_CMD_WRITE - the subdevice supports asynchronous commands in the output
748  * ("write") direction.
749  *
750  * %SDF_CMD_READ - the subdevice supports asynchronous commands in the input
751  * ("read") direction.
752  *
753  * %SDF_READABLE - the subdevice is readable (e.g. analog input).
754  *
755  * %SDF_WRITABLE (aliased as %SDF_WRITEABLE) - the subdevice is writable (e.g.
756  * analog output).
757  *
758  * %SDF_INTERNAL - the subdevice has no externally visible lines.
759  *
760  * %SDF_GROUND - the subdevice can use ground as an analog reference.
761  *
762  * %SDF_COMMON - the subdevice can use a common analog reference.
763  *
764  * %SDF_DIFF - the subdevice can use differential inputs (or outputs).
765  *
766  * %SDF_OTHER - the subdevice can use some other analog reference.
767  *
768  * %SDF_DITHER - the subdevice can do dithering.
769  *
770  * %SDF_DEGLITCH - the subdevice can do deglitching.
771  *
772  * %SDF_MMAP - this is never set.
773  *
774  * %SDF_RUNNING - an asynchronous command is still running.
775  *
776  * %SDF_LSAMPL - the subdevice uses "long" (32-bit) samples (for asynchronous
777  * command data).
778  *
779  * %SDF_PACKED - the subdevice packs several DIO samples into a single sample
780  * (for asynchronous command data).
781  *
782  * No "channel flags" (@flags) values are currently defined.
783  */
784 struct comedi_subdinfo {
785 	unsigned int type;
786 	unsigned int n_chan;
787 	unsigned int subd_flags;
788 	unsigned int timer_type;
789 	unsigned int len_chanlist;
790 	unsigned int maxdata;
791 	unsigned int flags;
792 	unsigned int range_type;
793 	unsigned int settling_time_0;
794 	unsigned int insn_bits_support;
795 	unsigned int unused[8];
796 };
797 
798 /**
799  * struct comedi_devinfo - used to retrieve information about a COMEDI device
800  * @version_code:	COMEDI version code.
801  * @n_subdevs:		Number of subdevices the device has.
802  * @driver_name:	Null-terminated COMEDI driver name.
803  * @board_name:		Null-terminated COMEDI board name.
804  * @read_subdevice:	Index of the current "read" subdevice (%-1 if none).
805  * @write_subdevice:	Index of the current "write" subdevice (%-1 if none).
806  * @unused:		Reserved for future use.
807  *
808  * This is used with the %COMEDI_DEVINFO ioctl to get basic information about
809  * the device.
810  */
811 struct comedi_devinfo {
812 	unsigned int version_code;
813 	unsigned int n_subdevs;
814 	char driver_name[COMEDI_NAMELEN];
815 	char board_name[COMEDI_NAMELEN];
816 	int read_subdevice;
817 	int write_subdevice;
818 	int unused[30];
819 };
820 
821 /**
822  * struct comedi_devconfig - used to configure a legacy COMEDI device
823  * @board_name:		Null-terminated string specifying the type of board
824  *			to configure.
825  * @options:		An array of integer configuration options.
826  *
827  * This is used with the %COMEDI_DEVCONFIG ioctl to configure a "legacy" COMEDI
828  * device, such as an ISA card.  Not all COMEDI drivers support this.  Those
829  * that do either expect the specified board name to match one of a list of
830  * names registered with the COMEDI core, or expect the specified board name
831  * to match the COMEDI driver name itself.  The configuration options are
832  * handled in a driver-specific manner.
833  */
834 struct comedi_devconfig {
835 	char board_name[COMEDI_NAMELEN];
836 	int options[COMEDI_NDEVCONFOPTS];
837 };
838 
839 /**
840  * struct comedi_bufconfig - used to set or get buffer size for a subdevice
841  * @subdevice:		Subdevice index.
842  * @flags:		Not used.
843  * @maximum_size:	Maximum allowed buffer size.
844  * @size:		Buffer size.
845  * @unused:		Reserved for future use.
846  *
847  * This is used with the %COMEDI_BUFCONFIG ioctl to get or configure the
848  * maximum buffer size and current buffer size for a COMEDI subdevice that
849  * supports asynchronous commands.  If the subdevice does not support
850  * asynchronous commands, @maximum_size and @size are ignored and set to 0.
851  *
852  * On ioctl input, non-zero values of @maximum_size and @size specify a
853  * new maximum size and new current size (in bytes), respectively.  These
854  * will by rounded up to a multiple of %PAGE_SIZE.  Specifying a new maximum
855  * size requires admin capabilities.
856  *
857  * On ioctl output, @maximum_size and @size and set to the current maximum
858  * buffer size and current buffer size, respectively.
859  */
860 struct comedi_bufconfig {
861 	unsigned int subdevice;
862 	unsigned int flags;
863 
864 	unsigned int maximum_size;
865 	unsigned int size;
866 
867 	unsigned int unused[4];
868 };
869 
870 /**
871  * struct comedi_bufinfo - used to manipulate buffer position for a subdevice
872  * @subdevice:		Subdevice index.
873  * @bytes_read:		Specify amount to advance read position for an
874  *			asynchronous command in the input ("read") direction.
875  * @buf_write_ptr:	Current write position (index) within the buffer.
876  * @buf_read_ptr:	Current read position (index) within the buffer.
877  * @buf_write_count:	Total amount written, modulo 2^32.
878  * @buf_read_count:	Total amount read, modulo 2^32.
879  * @bytes_written:	Specify amount to advance write position for an
880  *			asynchronous command in the output ("write") direction.
881  * @unused:		Reserved for future use.
882  *
883  * This is used with the %COMEDI_BUFINFO ioctl to optionally advance the
884  * current read or write position in an asynchronous acquisition data buffer,
885  * and to get the current read and write positions in the buffer.
886  */
887 struct comedi_bufinfo {
888 	unsigned int subdevice;
889 	unsigned int bytes_read;
890 
891 	unsigned int buf_write_ptr;
892 	unsigned int buf_read_ptr;
893 	unsigned int buf_write_count;
894 	unsigned int buf_read_count;
895 
896 	unsigned int bytes_written;
897 
898 	unsigned int unused[4];
899 };
900 
901 /* range stuff */
902 
903 #define __RANGE(a, b)	((((a) & 0xffff) << 16) | ((b) & 0xffff))
904 
905 #define RANGE_OFFSET(a)		(((a) >> 16) & 0xffff)
906 #define RANGE_LENGTH(b)		((b) & 0xffff)
907 
908 #define RF_UNIT(flags)		((flags) & 0xff)
909 #define RF_EXTERNAL		0x100
910 
911 #define UNIT_volt		0
912 #define UNIT_mA			1
913 #define UNIT_none		2
914 
915 #define COMEDI_MIN_SPEED	0xffffffffu
916 
917 /**********************************************************/
918 /* everything after this line is ALPHA */
919 /**********************************************************/
920 
921 /*
922  * 8254 specific configuration.
923  *
924  * It supports two config commands:
925  *
926  * 0 ID: INSN_CONFIG_SET_COUNTER_MODE
927  * 1 8254 Mode
928  * I8254_MODE0, I8254_MODE1, ..., I8254_MODE5
929  * OR'ed with:
930  * I8254_BCD, I8254_BINARY
931  *
932  * 0 ID: INSN_CONFIG_8254_READ_STATUS
933  * 1 <-- Status byte returned here.
934  * B7 = Output
935  * B6 = NULL Count
936  * B5 - B0 Current mode.
937  */
938 
939 enum i8254_mode {
940 	I8254_MODE0 = (0 << 1),	/* Interrupt on terminal count */
941 	I8254_MODE1 = (1 << 1),	/* Hardware retriggerable one-shot */
942 	I8254_MODE2 = (2 << 1),	/* Rate generator */
943 	I8254_MODE3 = (3 << 1),	/* Square wave mode */
944 	I8254_MODE4 = (4 << 1),	/* Software triggered strobe */
945 	/* Hardware triggered strobe (retriggerable) */
946 	I8254_MODE5 = (5 << 1),
947 	/* Use binary-coded decimal instead of binary (pretty useless) */
948 	I8254_BCD = 1,
949 	I8254_BINARY = 0
950 };
951 
952 /* *** BEGIN GLOBALLY-NAMED NI TERMINALS/SIGNALS *** */
953 
954 /*
955  * Common National Instruments Terminal/Signal names.
956  * Some of these have no NI_ prefix as they are useful for non-NI hardware, such
957  * as those that utilize the PXI/RTSI trigger lines.
958  *
959  * NOTE ABOUT THE CHOICE OF NAMES HERE AND THE CAMELSCRIPT:
960  *   The choice to use CamelScript and the exact names below is for
961  *   maintainability, clarity, similarity to manufacturer's documentation,
962  *   _and_ a mitigation for confusion that has plagued the use of these drivers
963  *   for years!
964  *
965  *   More detail:
966  *   There have been significant confusions over the past many years for users
967  *   when trying to understand how to connect to/from signals and terminals on
968  *   NI hardware using comedi.  The major reason for this is that the actual
969  *   register values were exposed and required to be used by users.  Several
970  *   major reasons exist why this caused major confusion for users:
971  *   1) The register values are _NOT_ in user documentation, but rather in
972  *     arcane locations, such as a few register programming manuals that are
973  *     increasingly hard to find and the NI MHDDK (comments in example code).
974  *     There is no one place to find the various valid values of the registers.
975  *   2) The register values are _NOT_ completely consistent.  There is no way to
976  *     gain any sense of intuition of which values, or even enums one should use
977  *     for various registers.  There was some attempt in prior use of comedi to
978  *     name enums such that a user might know which enums should be used for
979  *     varying purposes, but the end-user had to gain a knowledge of register
980  *     values to correctly wield this approach.
981  *   3) The names for signals and registers found in the various register level
982  *     programming manuals and vendor-provided documentation are _not_ even
983  *     close to the same names that are in the end-user documentation.
984  *
985  *   Similar, albeit less, confusion plagued NI's previous version of their own
986  *   drivers.  Earlier than 2003, NI greatly simplified the situation for users
987  *   by releasing a new API that abstracted the names of signals/terminals to a
988  *   common and intuitive set of names.
989  *
990  *   The names below mirror the names chosen and well documented by NI.  These
991  *   names are exposed to the user via the comedilib user library.  By keeping
992  *   the names below, in spite of the use of CamelScript, maintenance will be
993  *   greatly eased and confusion for users _and_ comedi developers will be
994  *   greatly reduced.
995  */
996 
997 /*
998  * Base of abstracted NI names.
999  * The first 16 bits of *_arg are reserved for channel selection.
1000  * Since we only actually need the first 4 or 5 bits for all register values on
1001  * NI select registers anyways, we'll identify all values >= (1<<15) as being an
1002  * abstracted NI signal/terminal name.
1003  * These values are also used/returned by INSN_DEVICE_CONFIG_TEST_ROUTE,
1004  * INSN_DEVICE_CONFIG_CONNECT_ROUTE, INSN_DEVICE_CONFIG_DISCONNECT_ROUTE,
1005  * and INSN_DEVICE_CONFIG_GET_ROUTES.
1006  */
1007 #define NI_NAMES_BASE	0x8000u
1008 
1009 #define _TERM_N(base, n, x)	((base) + ((x) & ((n) - 1)))
1010 
1011 /*
1012  * not necessarily all allowed 64 PFIs are valid--certainly not for all devices
1013  */
1014 #define NI_PFI(x)		_TERM_N(NI_NAMES_BASE, 64, x)
1015 /* 8 trigger lines by standard, Some devices cannot talk to all eight. */
1016 #define TRIGGER_LINE(x)		_TERM_N(NI_PFI(-1) + 1, 8, x)
1017 /* 4 RTSI shared MUXes to route signals to/from TRIGGER_LINES on NI hardware */
1018 #define NI_RTSI_BRD(x)		_TERM_N(TRIGGER_LINE(-1) + 1, 4, x)
1019 
1020 /* *** Counter/timer names : 8 counters max *** */
1021 #define NI_MAX_COUNTERS		8
1022 #define NI_COUNTER_NAMES_BASE	(NI_RTSI_BRD(-1)  + 1)
1023 #define NI_CtrSource(x)	      _TERM_N(NI_COUNTER_NAMES_BASE, NI_MAX_COUNTERS, x)
1024 /* Gate, Aux, A,B,Z are all treated, at times as gates */
1025 #define NI_GATES_NAMES_BASE	(NI_CtrSource(-1) + 1)
1026 #define NI_CtrGate(x)		_TERM_N(NI_GATES_NAMES_BASE, NI_MAX_COUNTERS, x)
1027 #define NI_CtrAux(x)		_TERM_N(NI_CtrGate(-1)  + 1, NI_MAX_COUNTERS, x)
1028 #define NI_CtrA(x)		_TERM_N(NI_CtrAux(-1)   + 1, NI_MAX_COUNTERS, x)
1029 #define NI_CtrB(x)		_TERM_N(NI_CtrA(-1)     + 1, NI_MAX_COUNTERS, x)
1030 #define NI_CtrZ(x)		_TERM_N(NI_CtrB(-1)     + 1, NI_MAX_COUNTERS, x)
1031 #define NI_GATES_NAMES_MAX	NI_CtrZ(-1)
1032 #define NI_CtrArmStartTrigger(x) _TERM_N(NI_CtrZ(-1)    + 1, NI_MAX_COUNTERS, x)
1033 #define NI_CtrInternalOutput(x) \
1034 		      _TERM_N(NI_CtrArmStartTrigger(-1) + 1, NI_MAX_COUNTERS, x)
1035 /** external pin(s) labeled conveniently as Ctr<i>Out. */
1036 #define NI_CtrOut(x)   _TERM_N(NI_CtrInternalOutput(-1) + 1, NI_MAX_COUNTERS, x)
1037 /** For Buffered sampling of ctr -- x series capability. */
1038 #define NI_CtrSampleClock(x)	_TERM_N(NI_CtrOut(-1)   + 1, NI_MAX_COUNTERS, x)
1039 #define NI_COUNTER_NAMES_MAX	NI_CtrSampleClock(-1)
1040 
1041 enum ni_common_signal_names {
1042 	/* PXI_Star: this is a non-NI-specific signal */
1043 	PXI_Star = NI_COUNTER_NAMES_MAX + 1,
1044 	PXI_Clk10,
1045 	PXIe_Clk100,
1046 	NI_AI_SampleClock,
1047 	NI_AI_SampleClockTimebase,
1048 	NI_AI_StartTrigger,
1049 	NI_AI_ReferenceTrigger,
1050 	NI_AI_ConvertClock,
1051 	NI_AI_ConvertClockTimebase,
1052 	NI_AI_PauseTrigger,
1053 	NI_AI_HoldCompleteEvent,
1054 	NI_AI_HoldComplete,
1055 	NI_AI_ExternalMUXClock,
1056 	NI_AI_STOP, /* pulse signal that occurs when a update is finished(?) */
1057 	NI_AO_SampleClock,
1058 	NI_AO_SampleClockTimebase,
1059 	NI_AO_StartTrigger,
1060 	NI_AO_PauseTrigger,
1061 	NI_DI_SampleClock,
1062 	NI_DI_SampleClockTimebase,
1063 	NI_DI_StartTrigger,
1064 	NI_DI_ReferenceTrigger,
1065 	NI_DI_PauseTrigger,
1066 	NI_DI_InputBufferFull,
1067 	NI_DI_ReadyForStartEvent,
1068 	NI_DI_ReadyForTransferEventBurst,
1069 	NI_DI_ReadyForTransferEventPipelined,
1070 	NI_DO_SampleClock,
1071 	NI_DO_SampleClockTimebase,
1072 	NI_DO_StartTrigger,
1073 	NI_DO_PauseTrigger,
1074 	NI_DO_OutputBufferFull,
1075 	NI_DO_DataActiveEvent,
1076 	NI_DO_ReadyForStartEvent,
1077 	NI_DO_ReadyForTransferEvent,
1078 	NI_MasterTimebase,
1079 	NI_20MHzTimebase,
1080 	NI_80MHzTimebase,
1081 	NI_100MHzTimebase,
1082 	NI_200MHzTimebase,
1083 	NI_100kHzTimebase,
1084 	NI_10MHzRefClock,
1085 	NI_FrequencyOutput,
1086 	NI_ChangeDetectionEvent,
1087 	NI_AnalogComparisonEvent,
1088 	NI_WatchdogExpiredEvent,
1089 	NI_WatchdogExpirationTrigger,
1090 	NI_SCXI_Trig1,
1091 	NI_LogicLow,
1092 	NI_LogicHigh,
1093 	NI_ExternalStrobe,
1094 	NI_PFI_DO,
1095 	NI_CaseGround,
1096 	/* special internal signal used as variable source for RTSI bus: */
1097 	NI_RGOUT0,
1098 
1099 	/* just a name to make the next more convenient, regardless of above */
1100 	_NI_NAMES_MAX_PLUS_1,
1101 	NI_NUM_NAMES = _NI_NAMES_MAX_PLUS_1 - NI_NAMES_BASE,
1102 };
1103 
1104 /* *** END GLOBALLY-NAMED NI TERMINALS/SIGNALS *** */
1105 
1106 #define NI_USUAL_PFI_SELECT(x)	(((x) < 10) ? (0x1 + (x)) : (0xb + (x)))
1107 #define NI_USUAL_RTSI_SELECT(x)	(((x) < 7) ? (0xb + (x)) : 0x1b)
1108 
1109 /*
1110  * mode bits for NI general-purpose counters, set with
1111  * INSN_CONFIG_SET_COUNTER_MODE
1112  */
1113 #define NI_GPCT_COUNTING_MODE_SHIFT 16
1114 #define NI_GPCT_INDEX_PHASE_BITSHIFT 20
1115 #define NI_GPCT_COUNTING_DIRECTION_SHIFT 24
1116 enum ni_gpct_mode_bits {
1117 	NI_GPCT_GATE_ON_BOTH_EDGES_BIT = 0x4,
1118 	NI_GPCT_EDGE_GATE_MODE_MASK = 0x18,
1119 	NI_GPCT_EDGE_GATE_STARTS_STOPS_BITS = 0x0,
1120 	NI_GPCT_EDGE_GATE_STOPS_STARTS_BITS = 0x8,
1121 	NI_GPCT_EDGE_GATE_STARTS_BITS = 0x10,
1122 	NI_GPCT_EDGE_GATE_NO_STARTS_NO_STOPS_BITS = 0x18,
1123 	NI_GPCT_STOP_MODE_MASK = 0x60,
1124 	NI_GPCT_STOP_ON_GATE_BITS = 0x00,
1125 	NI_GPCT_STOP_ON_GATE_OR_TC_BITS = 0x20,
1126 	NI_GPCT_STOP_ON_GATE_OR_SECOND_TC_BITS = 0x40,
1127 	NI_GPCT_LOAD_B_SELECT_BIT = 0x80,
1128 	NI_GPCT_OUTPUT_MODE_MASK = 0x300,
1129 	NI_GPCT_OUTPUT_TC_PULSE_BITS = 0x100,
1130 	NI_GPCT_OUTPUT_TC_TOGGLE_BITS = 0x200,
1131 	NI_GPCT_OUTPUT_TC_OR_GATE_TOGGLE_BITS = 0x300,
1132 	NI_GPCT_HARDWARE_DISARM_MASK = 0xc00,
1133 	NI_GPCT_NO_HARDWARE_DISARM_BITS = 0x000,
1134 	NI_GPCT_DISARM_AT_TC_BITS = 0x400,
1135 	NI_GPCT_DISARM_AT_GATE_BITS = 0x800,
1136 	NI_GPCT_DISARM_AT_TC_OR_GATE_BITS = 0xc00,
1137 	NI_GPCT_LOADING_ON_TC_BIT = 0x1000,
1138 	NI_GPCT_LOADING_ON_GATE_BIT = 0x4000,
1139 	NI_GPCT_COUNTING_MODE_MASK = 0x7 << NI_GPCT_COUNTING_MODE_SHIFT,
1140 	NI_GPCT_COUNTING_MODE_NORMAL_BITS =
1141 		0x0 << NI_GPCT_COUNTING_MODE_SHIFT,
1142 	NI_GPCT_COUNTING_MODE_QUADRATURE_X1_BITS =
1143 		0x1 << NI_GPCT_COUNTING_MODE_SHIFT,
1144 	NI_GPCT_COUNTING_MODE_QUADRATURE_X2_BITS =
1145 		0x2 << NI_GPCT_COUNTING_MODE_SHIFT,
1146 	NI_GPCT_COUNTING_MODE_QUADRATURE_X4_BITS =
1147 		0x3 << NI_GPCT_COUNTING_MODE_SHIFT,
1148 	NI_GPCT_COUNTING_MODE_TWO_PULSE_BITS =
1149 		0x4 << NI_GPCT_COUNTING_MODE_SHIFT,
1150 	NI_GPCT_COUNTING_MODE_SYNC_SOURCE_BITS =
1151 		0x6 << NI_GPCT_COUNTING_MODE_SHIFT,
1152 	NI_GPCT_INDEX_PHASE_MASK = 0x3 << NI_GPCT_INDEX_PHASE_BITSHIFT,
1153 	NI_GPCT_INDEX_PHASE_LOW_A_LOW_B_BITS =
1154 		0x0 << NI_GPCT_INDEX_PHASE_BITSHIFT,
1155 	NI_GPCT_INDEX_PHASE_LOW_A_HIGH_B_BITS =
1156 		0x1 << NI_GPCT_INDEX_PHASE_BITSHIFT,
1157 	NI_GPCT_INDEX_PHASE_HIGH_A_LOW_B_BITS =
1158 		0x2 << NI_GPCT_INDEX_PHASE_BITSHIFT,
1159 	NI_GPCT_INDEX_PHASE_HIGH_A_HIGH_B_BITS =
1160 		0x3 << NI_GPCT_INDEX_PHASE_BITSHIFT,
1161 	NI_GPCT_INDEX_ENABLE_BIT = 0x400000,
1162 	NI_GPCT_COUNTING_DIRECTION_MASK =
1163 		0x3 << NI_GPCT_COUNTING_DIRECTION_SHIFT,
1164 	NI_GPCT_COUNTING_DIRECTION_DOWN_BITS =
1165 		0x00 << NI_GPCT_COUNTING_DIRECTION_SHIFT,
1166 	NI_GPCT_COUNTING_DIRECTION_UP_BITS =
1167 		0x1 << NI_GPCT_COUNTING_DIRECTION_SHIFT,
1168 	NI_GPCT_COUNTING_DIRECTION_HW_UP_DOWN_BITS =
1169 		0x2 << NI_GPCT_COUNTING_DIRECTION_SHIFT,
1170 	NI_GPCT_COUNTING_DIRECTION_HW_GATE_BITS =
1171 		0x3 << NI_GPCT_COUNTING_DIRECTION_SHIFT,
1172 	NI_GPCT_RELOAD_SOURCE_MASK = 0xc000000,
1173 	NI_GPCT_RELOAD_SOURCE_FIXED_BITS = 0x0,
1174 	NI_GPCT_RELOAD_SOURCE_SWITCHING_BITS = 0x4000000,
1175 	NI_GPCT_RELOAD_SOURCE_GATE_SELECT_BITS = 0x8000000,
1176 	NI_GPCT_OR_GATE_BIT = 0x10000000,
1177 	NI_GPCT_INVERT_OUTPUT_BIT = 0x20000000
1178 };
1179 
1180 /*
1181  * Bits for setting a clock source with
1182  * INSN_CONFIG_SET_CLOCK_SRC when using NI general-purpose counters.
1183  */
1184 enum ni_gpct_clock_source_bits {
1185 	NI_GPCT_CLOCK_SRC_SELECT_MASK = 0x3f,
1186 	NI_GPCT_TIMEBASE_1_CLOCK_SRC_BITS = 0x0,
1187 	NI_GPCT_TIMEBASE_2_CLOCK_SRC_BITS = 0x1,
1188 	NI_GPCT_TIMEBASE_3_CLOCK_SRC_BITS = 0x2,
1189 	NI_GPCT_LOGIC_LOW_CLOCK_SRC_BITS = 0x3,
1190 	NI_GPCT_NEXT_GATE_CLOCK_SRC_BITS = 0x4,
1191 	NI_GPCT_NEXT_TC_CLOCK_SRC_BITS = 0x5,
1192 	/* NI 660x-specific */
1193 	NI_GPCT_SOURCE_PIN_i_CLOCK_SRC_BITS = 0x6,
1194 	NI_GPCT_PXI10_CLOCK_SRC_BITS = 0x7,
1195 	NI_GPCT_PXI_STAR_TRIGGER_CLOCK_SRC_BITS = 0x8,
1196 	NI_GPCT_ANALOG_TRIGGER_OUT_CLOCK_SRC_BITS = 0x9,
1197 	NI_GPCT_PRESCALE_MODE_CLOCK_SRC_MASK = 0x30000000,
1198 	NI_GPCT_NO_PRESCALE_CLOCK_SRC_BITS = 0x0,
1199 	/* divide source by 2 */
1200 	NI_GPCT_PRESCALE_X2_CLOCK_SRC_BITS = 0x10000000,
1201 	/* divide source by 8 */
1202 	NI_GPCT_PRESCALE_X8_CLOCK_SRC_BITS = 0x20000000,
1203 	NI_GPCT_INVERT_CLOCK_SRC_BIT = 0x80000000
1204 };
1205 
1206 /* NI 660x-specific */
1207 #define NI_GPCT_SOURCE_PIN_CLOCK_SRC_BITS(x)	(0x10 + (x))
1208 
1209 #define NI_GPCT_RTSI_CLOCK_SRC_BITS(x)		(0x18 + (x))
1210 
1211 /* no pfi on NI 660x */
1212 #define NI_GPCT_PFI_CLOCK_SRC_BITS(x)		(0x20 + (x))
1213 
1214 /*
1215  * Possibilities for setting a gate source with
1216  * INSN_CONFIG_SET_GATE_SRC when using NI general-purpose counters.
1217  * May be bitwise-or'd with CR_EDGE or CR_INVERT.
1218  */
1219 enum ni_gpct_gate_select {
1220 	/* m-series gates */
1221 	NI_GPCT_TIMESTAMP_MUX_GATE_SELECT = 0x0,
1222 	NI_GPCT_AI_START2_GATE_SELECT = 0x12,
1223 	NI_GPCT_PXI_STAR_TRIGGER_GATE_SELECT = 0x13,
1224 	NI_GPCT_NEXT_OUT_GATE_SELECT = 0x14,
1225 	NI_GPCT_AI_START1_GATE_SELECT = 0x1c,
1226 	NI_GPCT_NEXT_SOURCE_GATE_SELECT = 0x1d,
1227 	NI_GPCT_ANALOG_TRIGGER_OUT_GATE_SELECT = 0x1e,
1228 	NI_GPCT_LOGIC_LOW_GATE_SELECT = 0x1f,
1229 	/* more gates for 660x */
1230 	NI_GPCT_SOURCE_PIN_i_GATE_SELECT = 0x100,
1231 	NI_GPCT_GATE_PIN_i_GATE_SELECT = 0x101,
1232 	/* more gates for 660x "second gate" */
1233 	NI_GPCT_UP_DOWN_PIN_i_GATE_SELECT = 0x201,
1234 	NI_GPCT_SELECTED_GATE_GATE_SELECT = 0x21e,
1235 	/*
1236 	 * m-series "second gate" sources are unknown,
1237 	 * we should add them here with an offset of 0x300 when
1238 	 * known.
1239 	 */
1240 	NI_GPCT_DISABLED_GATE_SELECT = 0x8000,
1241 };
1242 
1243 #define NI_GPCT_GATE_PIN_GATE_SELECT(x)		(0x102 + (x))
1244 #define NI_GPCT_RTSI_GATE_SELECT(x)		NI_USUAL_RTSI_SELECT(x)
1245 #define NI_GPCT_PFI_GATE_SELECT(x)		NI_USUAL_PFI_SELECT(x)
1246 #define NI_GPCT_UP_DOWN_PIN_GATE_SELECT(x)	(0x202 + (x))
1247 
1248 /*
1249  * Possibilities for setting a source with
1250  * INSN_CONFIG_SET_OTHER_SRC when using NI general-purpose counters.
1251  */
1252 enum ni_gpct_other_index {
1253 	NI_GPCT_SOURCE_ENCODER_A,
1254 	NI_GPCT_SOURCE_ENCODER_B,
1255 	NI_GPCT_SOURCE_ENCODER_Z
1256 };
1257 
1258 enum ni_gpct_other_select {
1259 	/* m-series gates */
1260 	/* Still unknown, probably only need NI_GPCT_PFI_OTHER_SELECT */
1261 	NI_GPCT_DISABLED_OTHER_SELECT = 0x8000,
1262 };
1263 
1264 #define NI_GPCT_PFI_OTHER_SELECT(x)	NI_USUAL_PFI_SELECT(x)
1265 
1266 /*
1267  * start sources for ni general-purpose counters for use with
1268  * INSN_CONFIG_ARM
1269  */
1270 enum ni_gpct_arm_source {
1271 	NI_GPCT_ARM_IMMEDIATE = 0x0,
1272 	/*
1273 	 * Start both the counter and the adjacent paired counter simultaneously
1274 	 */
1275 	NI_GPCT_ARM_PAIRED_IMMEDIATE = 0x1,
1276 	/*
1277 	 * If the NI_GPCT_HW_ARM bit is set, we will pass the least significant
1278 	 * bits (3 bits for 660x or 5 bits for m-series) through to the
1279 	 * hardware. To select a hardware trigger, pass the appropriate select
1280 	 * bit, e.g.,
1281 	 * NI_GPCT_HW_ARM | NI_GPCT_AI_START1_GATE_SELECT or
1282 	 * NI_GPCT_HW_ARM | NI_GPCT_PFI_GATE_SELECT(pfi_number)
1283 	 */
1284 	NI_GPCT_HW_ARM = 0x1000,
1285 	NI_GPCT_ARM_UNKNOWN = NI_GPCT_HW_ARM,	/* for backward compatibility */
1286 };
1287 
1288 /* digital filtering options for ni 660x for use with INSN_CONFIG_FILTER. */
1289 enum ni_gpct_filter_select {
1290 	NI_GPCT_FILTER_OFF = 0x0,
1291 	NI_GPCT_FILTER_TIMEBASE_3_SYNC = 0x1,
1292 	NI_GPCT_FILTER_100x_TIMEBASE_1 = 0x2,
1293 	NI_GPCT_FILTER_20x_TIMEBASE_1 = 0x3,
1294 	NI_GPCT_FILTER_10x_TIMEBASE_1 = 0x4,
1295 	NI_GPCT_FILTER_2x_TIMEBASE_1 = 0x5,
1296 	NI_GPCT_FILTER_2x_TIMEBASE_3 = 0x6
1297 };
1298 
1299 /*
1300  * PFI digital filtering options for ni m-series for use with
1301  * INSN_CONFIG_FILTER.
1302  */
1303 enum ni_pfi_filter_select {
1304 	NI_PFI_FILTER_OFF = 0x0,
1305 	NI_PFI_FILTER_125ns = 0x1,
1306 	NI_PFI_FILTER_6425ns = 0x2,
1307 	NI_PFI_FILTER_2550us = 0x3
1308 };
1309 
1310 /* master clock sources for ni mio boards and INSN_CONFIG_SET_CLOCK_SRC */
1311 enum ni_mio_clock_source {
1312 	NI_MIO_INTERNAL_CLOCK = 0,
1313 	/*
1314 	 * Doesn't work for m-series, use NI_MIO_PLL_RTSI_CLOCK()
1315 	 * the NI_MIO_PLL_* sources are m-series only
1316 	 */
1317 	NI_MIO_RTSI_CLOCK = 1,
1318 	NI_MIO_PLL_PXI_STAR_TRIGGER_CLOCK = 2,
1319 	NI_MIO_PLL_PXI10_CLOCK = 3,
1320 	NI_MIO_PLL_RTSI0_CLOCK = 4
1321 };
1322 
1323 #define NI_MIO_PLL_RTSI_CLOCK(x)	(NI_MIO_PLL_RTSI0_CLOCK + (x))
1324 
1325 /*
1326  * Signals which can be routed to an NI RTSI pin with INSN_CONFIG_SET_ROUTING.
1327  * The numbers assigned are not arbitrary, they correspond to the bits required
1328  * to program the board.
1329  */
1330 enum ni_rtsi_routing {
1331 	NI_RTSI_OUTPUT_ADR_START1 = 0,
1332 	NI_RTSI_OUTPUT_ADR_START2 = 1,
1333 	NI_RTSI_OUTPUT_SCLKG = 2,
1334 	NI_RTSI_OUTPUT_DACUPDN = 3,
1335 	NI_RTSI_OUTPUT_DA_START1 = 4,
1336 	NI_RTSI_OUTPUT_G_SRC0 = 5,
1337 	NI_RTSI_OUTPUT_G_GATE0 = 6,
1338 	NI_RTSI_OUTPUT_RGOUT0 = 7,
1339 	NI_RTSI_OUTPUT_RTSI_BRD_0 = 8,
1340 	/* Pre-m-series always have RTSI clock on line 7 */
1341 	NI_RTSI_OUTPUT_RTSI_OSC = 12
1342 };
1343 
1344 #define NI_RTSI_OUTPUT_RTSI_BRD(x)	(NI_RTSI_OUTPUT_RTSI_BRD_0 + (x))
1345 
1346 /*
1347  * Signals which can be routed to an NI PFI pin on an m-series board with
1348  * INSN_CONFIG_SET_ROUTING.  These numbers are also returned by
1349  * INSN_CONFIG_GET_ROUTING on pre-m-series boards, even though their routing
1350  * cannot be changed.  The numbers assigned are not arbitrary, they correspond
1351  * to the bits required to program the board.
1352  */
1353 enum ni_pfi_routing {
1354 	NI_PFI_OUTPUT_PFI_DEFAULT = 0,
1355 	NI_PFI_OUTPUT_AI_START1 = 1,
1356 	NI_PFI_OUTPUT_AI_START2 = 2,
1357 	NI_PFI_OUTPUT_AI_CONVERT = 3,
1358 	NI_PFI_OUTPUT_G_SRC1 = 4,
1359 	NI_PFI_OUTPUT_G_GATE1 = 5,
1360 	NI_PFI_OUTPUT_AO_UPDATE_N = 6,
1361 	NI_PFI_OUTPUT_AO_START1 = 7,
1362 	NI_PFI_OUTPUT_AI_START_PULSE = 8,
1363 	NI_PFI_OUTPUT_G_SRC0 = 9,
1364 	NI_PFI_OUTPUT_G_GATE0 = 10,
1365 	NI_PFI_OUTPUT_EXT_STROBE = 11,
1366 	NI_PFI_OUTPUT_AI_EXT_MUX_CLK = 12,
1367 	NI_PFI_OUTPUT_GOUT0 = 13,
1368 	NI_PFI_OUTPUT_GOUT1 = 14,
1369 	NI_PFI_OUTPUT_FREQ_OUT = 15,
1370 	NI_PFI_OUTPUT_PFI_DO = 16,
1371 	NI_PFI_OUTPUT_I_ATRIG = 17,
1372 	NI_PFI_OUTPUT_RTSI0 = 18,
1373 	NI_PFI_OUTPUT_PXI_STAR_TRIGGER_IN = 26,
1374 	NI_PFI_OUTPUT_SCXI_TRIG1 = 27,
1375 	NI_PFI_OUTPUT_DIO_CHANGE_DETECT_RTSI = 28,
1376 	NI_PFI_OUTPUT_CDI_SAMPLE = 29,
1377 	NI_PFI_OUTPUT_CDO_UPDATE = 30
1378 };
1379 
1380 #define NI_PFI_OUTPUT_RTSI(x)		(NI_PFI_OUTPUT_RTSI0 + (x))
1381 
1382 /*
1383  * Signals which can be routed to output on a NI PFI pin on a 660x board
1384  * with INSN_CONFIG_SET_ROUTING.  The numbers assigned are
1385  * not arbitrary, they correspond to the bits required
1386  * to program the board.  Lines 0 to 7 can only be set to
1387  * NI_660X_PFI_OUTPUT_DIO.  Lines 32 to 39 can only be set to
1388  * NI_660X_PFI_OUTPUT_COUNTER.
1389  */
1390 enum ni_660x_pfi_routing {
1391 	NI_660X_PFI_OUTPUT_COUNTER = 1,	/* counter */
1392 	NI_660X_PFI_OUTPUT_DIO = 2,	/* static digital output */
1393 };
1394 
1395 /*
1396  * NI External Trigger lines.  These values are not arbitrary, but are related
1397  * to the bits required to program the board (offset by 1 for historical
1398  * reasons).
1399  */
1400 #define NI_EXT_PFI(x)			(NI_USUAL_PFI_SELECT(x) - 1)
1401 #define NI_EXT_RTSI(x)			(NI_USUAL_RTSI_SELECT(x) - 1)
1402 
1403 /*
1404  * Clock sources for CDIO subdevice on NI m-series boards.  Used as the
1405  * scan_begin_arg for a comedi_command. These sources may also be bitwise-or'd
1406  * with CR_INVERT to change polarity.
1407  */
1408 enum ni_m_series_cdio_scan_begin_src {
1409 	NI_CDIO_SCAN_BEGIN_SRC_GROUND = 0,
1410 	NI_CDIO_SCAN_BEGIN_SRC_AI_START = 18,
1411 	NI_CDIO_SCAN_BEGIN_SRC_AI_CONVERT = 19,
1412 	NI_CDIO_SCAN_BEGIN_SRC_PXI_STAR_TRIGGER = 20,
1413 	NI_CDIO_SCAN_BEGIN_SRC_G0_OUT = 28,
1414 	NI_CDIO_SCAN_BEGIN_SRC_G1_OUT = 29,
1415 	NI_CDIO_SCAN_BEGIN_SRC_ANALOG_TRIGGER = 30,
1416 	NI_CDIO_SCAN_BEGIN_SRC_AO_UPDATE = 31,
1417 	NI_CDIO_SCAN_BEGIN_SRC_FREQ_OUT = 32,
1418 	NI_CDIO_SCAN_BEGIN_SRC_DIO_CHANGE_DETECT_IRQ = 33
1419 };
1420 
1421 #define NI_CDIO_SCAN_BEGIN_SRC_PFI(x)	NI_USUAL_PFI_SELECT(x)
1422 #define NI_CDIO_SCAN_BEGIN_SRC_RTSI(x)	NI_USUAL_RTSI_SELECT(x)
1423 
1424 /*
1425  * scan_begin_src for scan_begin_arg==TRIG_EXT with analog output command on NI
1426  * boards.  These scan begin sources can also be bitwise-or'd with CR_INVERT to
1427  * change polarity.
1428  */
1429 #define NI_AO_SCAN_BEGIN_SRC_PFI(x)	NI_USUAL_PFI_SELECT(x)
1430 #define NI_AO_SCAN_BEGIN_SRC_RTSI(x)	NI_USUAL_RTSI_SELECT(x)
1431 
1432 /*
1433  * Bits for setting a clock source with
1434  * INSN_CONFIG_SET_CLOCK_SRC when using NI frequency output subdevice.
1435  */
1436 enum ni_freq_out_clock_source_bits {
1437 	NI_FREQ_OUT_TIMEBASE_1_DIV_2_CLOCK_SRC,	/* 10 MHz */
1438 	NI_FREQ_OUT_TIMEBASE_2_CLOCK_SRC	/* 100 KHz */
1439 };
1440 
1441 /*
1442  * Values for setting a clock source with INSN_CONFIG_SET_CLOCK_SRC for
1443  * 8254 counter subdevices on Amplicon DIO boards (amplc_dio200 driver).
1444  */
1445 enum amplc_dio_clock_source {
1446 	/*
1447 	 * Per channel external clock
1448 	 * input/output pin (pin is only an
1449 	 * input when clock source set to this value,
1450 	 * otherwise it is an output)
1451 	 */
1452 	AMPLC_DIO_CLK_CLKN,
1453 	AMPLC_DIO_CLK_10MHZ,	/* 10 MHz internal clock */
1454 	AMPLC_DIO_CLK_1MHZ,	/* 1 MHz internal clock */
1455 	AMPLC_DIO_CLK_100KHZ,	/* 100 kHz internal clock */
1456 	AMPLC_DIO_CLK_10KHZ,	/* 10 kHz internal clock */
1457 	AMPLC_DIO_CLK_1KHZ,	/* 1 kHz internal clock */
1458 	/*
1459 	 * Output of preceding counter channel
1460 	 * (for channel 0, preceding counter
1461 	 * channel is channel 2 on preceding
1462 	 * counter subdevice, for first counter
1463 	 * subdevice, preceding counter
1464 	 * subdevice is the last counter
1465 	 * subdevice)
1466 	 */
1467 	AMPLC_DIO_CLK_OUTNM1,
1468 	AMPLC_DIO_CLK_EXT,	/* per chip external input pin */
1469 	/* the following are "enhanced" clock sources for PCIe models */
1470 	AMPLC_DIO_CLK_VCC,	/* clock input HIGH */
1471 	AMPLC_DIO_CLK_GND,	/* clock input LOW */
1472 	AMPLC_DIO_CLK_PAT_PRESENT, /* "pattern present" signal */
1473 	AMPLC_DIO_CLK_20MHZ	/* 20 MHz internal clock */
1474 };
1475 
1476 /*
1477  * Values for setting a clock source with INSN_CONFIG_SET_CLOCK_SRC for
1478  * timer subdevice on some Amplicon DIO PCIe boards (amplc_dio200 driver).
1479  */
1480 enum amplc_dio_ts_clock_src {
1481 	AMPLC_DIO_TS_CLK_1GHZ,	/* 1 ns period with 20 ns granularity */
1482 	AMPLC_DIO_TS_CLK_1MHZ,	/* 1 us period */
1483 	AMPLC_DIO_TS_CLK_1KHZ	/* 1 ms period */
1484 };
1485 
1486 /*
1487  * Values for setting a gate source with INSN_CONFIG_SET_GATE_SRC for
1488  * 8254 counter subdevices on Amplicon DIO boards (amplc_dio200 driver).
1489  */
1490 enum amplc_dio_gate_source {
1491 	AMPLC_DIO_GAT_VCC,	/* internal high logic level */
1492 	AMPLC_DIO_GAT_GND,	/* internal low logic level */
1493 	AMPLC_DIO_GAT_GATN,	/* per channel external gate input */
1494 	/*
1495 	 * negated output of counter channel minus 2
1496 	 * (for channels 0 or 1, channel minus 2 is channel 1 or 2 on
1497 	 * the preceding counter subdevice, for the first counter subdevice
1498 	 * the preceding counter subdevice is the last counter subdevice)
1499 	 */
1500 	AMPLC_DIO_GAT_NOUTNM2,
1501 	AMPLC_DIO_GAT_RESERVED4,
1502 	AMPLC_DIO_GAT_RESERVED5,
1503 	AMPLC_DIO_GAT_RESERVED6,
1504 	AMPLC_DIO_GAT_RESERVED7,
1505 	/* the following are "enhanced" gate sources for PCIe models */
1506 	AMPLC_DIO_GAT_NGATN = 6, /* negated per channel gate input */
1507 	/* non-negated output of counter channel minus 2 */
1508 	AMPLC_DIO_GAT_OUTNM2,
1509 	AMPLC_DIO_GAT_PAT_PRESENT, /* "pattern present" signal */
1510 	AMPLC_DIO_GAT_PAT_OCCURRED, /* "pattern occurred" latched */
1511 	AMPLC_DIO_GAT_PAT_GONE,	/* "pattern gone away" latched */
1512 	AMPLC_DIO_GAT_NPAT_PRESENT, /* negated "pattern present" */
1513 	AMPLC_DIO_GAT_NPAT_OCCURRED, /* negated "pattern occurred" */
1514 	AMPLC_DIO_GAT_NPAT_GONE	/* negated "pattern gone away" */
1515 };
1516 
1517 /*
1518  * Values for setting a clock source with INSN_CONFIG_SET_CLOCK_SRC for
1519  * the counter subdevice on the Kolter Electronic PCI-Counter board
1520  * (ke_counter driver).
1521  */
1522 enum ke_counter_clock_source {
1523 	KE_CLK_20MHZ,	/* internal 20MHz (default) */
1524 	KE_CLK_4MHZ,	/* internal 4MHz (option) */
1525 	KE_CLK_EXT	/* external clock on pin 21 of D-Sub */
1526 };
1527 
1528 #endif /* _COMEDI_H */
1529