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Commit | Line | Data |
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e64374f8 DS |
1 | /* |
2 | comedi/drivers/das16.c | |
3 | DAS16 driver | |
4 | ||
5 | COMEDI - Linux Control and Measurement Device Interface | |
6 | Copyright (C) 2000 David A. Schleef <ds@schleef.org> | |
7 | Copyright (C) 2000 Chris R. Baugher <baugher@enteract.com> | |
8 | Copyright (C) 2001,2002 Frank Mori Hess <fmhess@users.sourceforge.net> | |
9 | ||
10 | This program is free software; you can redistribute it and/or modify | |
11 | it under the terms of the GNU General Public License as published by | |
12 | the Free Software Foundation; either version 2 of the License, or | |
13 | (at your option) any later version. | |
14 | ||
15 | This program is distributed in the hope that it will be useful, | |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
19 | ||
20 | You should have received a copy of the GNU General Public License | |
21 | along with this program; if not, write to the Free Software | |
22 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
23 | ||
24 | ************************************************************************ | |
25 | */ | |
26 | /* | |
27 | Driver: das16 | |
28 | Description: DAS16 compatible boards | |
29 | Author: Sam Moore, Warren Jasper, ds, Chris Baugher, Frank Hess, Roman Fietze | |
30 | Devices: [Keithley Metrabyte] DAS-16 (das-16), DAS-16G (das-16g), | |
31 | DAS-16F (das-16f), DAS-1201 (das-1201), DAS-1202 (das-1202), | |
32 | DAS-1401 (das-1401), DAS-1402 (das-1402), DAS-1601 (das-1601), | |
33 | DAS-1602 (das-1602), | |
34 | [ComputerBoards] PC104-DAS16/JR (pc104-das16jr), | |
35 | PC104-DAS16JR/16 (pc104-das16jr/16), | |
36 | CIO-DAS16JR/16 (cio-das16jr/16), | |
37 | CIO-DAS16/JR (cio-das16/jr), CIO-DAS1401/12 (cio-das1401/12), | |
38 | CIO-DAS1402/12 (cio-das1402/12), CIO-DAS1402/16 (cio-das1402/16), | |
39 | CIO-DAS1601/12 (cio-das1601/12), CIO-DAS1602/12 (cio-das1602/12), | |
40 | CIO-DAS1602/16 (cio-das1602/16), CIO-DAS16/330 (cio-das16/330) | |
41 | Status: works | |
42 | Updated: 2003-10-12 | |
43 | ||
44 | A rewrite of the das16 and das1600 drivers. | |
45 | Options: | |
46 | [0] - base io address | |
47 | [1] - irq (does nothing, irq is not used anymore) | |
48 | [2] - dma (optional, required for comedi_command support) | |
49 | [3] - master clock speed in MHz (optional, 1 or 10, ignored if | |
50 | board can probe clock, defaults to 1) | |
51 | [4] - analog input range lowest voltage in microvolts (optional, | |
52 | only useful if your board does not have software | |
53 | programmable gain) | |
54 | [5] - analog input range highest voltage in microvolts (optional, | |
55 | only useful if board does not have software programmable | |
56 | gain) | |
57 | [6] - analog output range lowest voltage in microvolts (optional) | |
58 | [7] - analog output range highest voltage in microvolts (optional) | |
59 | [8] - use timer mode for DMA. Timer mode is needed e.g. for | |
60 | buggy DMA controllers in NS CS5530A (Geode Companion), and for | |
61 | 'jr' cards that lack a hardware fifo. This option is no | |
62 | longer needed, since timer mode is _always_ used. | |
63 | ||
64 | Passing a zero for an option is the same as leaving it unspecified. | |
65 | ||
66 | */ | |
67 | /* | |
68 | ||
69 | Testing and debugging help provided by Daniel Koch. | |
70 | ||
71 | Keithley Manuals: | |
72 | 2309.PDF (das16) | |
73 | 4919.PDF (das1400, 1600) | |
74 | 4922.PDF (das-1400) | |
75 | 4923.PDF (das1200, 1400, 1600) | |
76 | ||
77 | Computer boards manuals also available from their website www.measurementcomputing.com | |
78 | ||
79 | */ | |
80 | ||
81 | #include <linux/pci.h> | |
5a0e3ad6 | 82 | #include <linux/slab.h> |
25436dc9 | 83 | #include <linux/interrupt.h> |
e64374f8 DS |
84 | #include <asm/dma.h> |
85 | #include "../comedidev.h" | |
86 | ||
87 | #include "8253.h" | |
88 | #include "8255.h" | |
89 | #include "comedi_fc.h" | |
90 | ||
91 | #undef DEBUG | |
2696fb57 | 92 | /* #define DEBUG */ |
e64374f8 DS |
93 | |
94 | #ifdef DEBUG | |
5f74ea14 | 95 | #define DEBUG_PRINT(format, args...) printk("das16: " format, ## args) |
e64374f8 DS |
96 | #else |
97 | #define DEBUG_PRINT(format, args...) | |
98 | #endif | |
99 | ||
2696fb57 BP |
100 | #define DAS16_SIZE 20 /* number of ioports */ |
101 | #define DAS16_DMA_SIZE 0xff00 /* size in bytes of allocated dma buffer */ | |
e64374f8 DS |
102 | |
103 | /* | |
104 | cio-das16.pdf | |
105 | ||
106 | "das16" | |
107 | "das16/f" | |
108 | ||
109 | 0 a/d bits 0-3 start 12 bit | |
110 | 1 a/d bits 4-11 unused | |
111 | 2 mux read mux set | |
112 | 3 di 4 bit do 4 bit | |
113 | 4 unused ao0_lsb | |
114 | 5 unused ao0_msb | |
115 | 6 unused ao1_lsb | |
116 | 7 unused ao1_msb | |
117 | 8 status eoc uni/bip interrupt reset | |
118 | 9 dma, int, trig ctrl set dma, int | |
119 | a pacer control unused | |
120 | b reserved reserved | |
121 | cdef 8254 | |
122 | 0123 8255 | |
123 | ||
124 | */ | |
125 | ||
126 | /* | |
127 | cio-das16jr.pdf | |
128 | ||
129 | "das16jr" | |
130 | ||
131 | 0 a/d bits 0-3 start 12 bit | |
132 | 1 a/d bits 4-11 unused | |
133 | 2 mux read mux set | |
134 | 3 di 4 bit do 4 bit | |
135 | 4567 unused unused | |
136 | 8 status eoc uni/bip interrupt reset | |
137 | 9 dma, int, trig ctrl set dma, int | |
138 | a pacer control unused | |
139 | b gain status gain control | |
140 | cdef 8254 | |
141 | ||
142 | */ | |
143 | ||
144 | /* | |
145 | cio-das16jr_16.pdf | |
146 | ||
147 | "das16jr_16" | |
148 | ||
149 | 0 a/d bits 0-7 start 16 bit | |
150 | 1 a/d bits 8-15 unused | |
151 | 2 mux read mux set | |
152 | 3 di 4 bit do 4 bit | |
153 | 4567 unused unused | |
154 | 8 status eoc uni/bip interrupt reset | |
155 | 9 dma, int, trig ctrl set dma, int | |
156 | a pacer control unused | |
157 | b gain status gain control | |
158 | cdef 8254 | |
159 | ||
160 | */ | |
161 | /* | |
162 | cio-das160x-1x.pdf | |
163 | ||
164 | "das1601/12" | |
165 | "das1602/12" | |
166 | "das1602/16" | |
167 | ||
168 | 0 a/d bits 0-3 start 12 bit | |
169 | 1 a/d bits 4-11 unused | |
170 | 2 mux read mux set | |
171 | 3 di 4 bit do 4 bit | |
172 | 4 unused ao0_lsb | |
173 | 5 unused ao0_msb | |
174 | 6 unused ao1_lsb | |
175 | 7 unused ao1_msb | |
176 | 8 status eoc uni/bip interrupt reset | |
177 | 9 dma, int, trig ctrl set dma, int | |
178 | a pacer control unused | |
179 | b gain status gain control | |
180 | cdef 8254 | |
181 | 400 8255 | |
182 | 404 unused conversion enable | |
183 | 405 unused burst enable | |
184 | 406 unused das1600 enable | |
185 | 407 status | |
186 | ||
187 | */ | |
188 | ||
2696fb57 | 189 | static const int sample_size = 2; /* size in bytes of a sample from board */ |
e64374f8 DS |
190 | |
191 | #define DAS16_TRIG 0 | |
192 | #define DAS16_AI_LSB 0 | |
193 | #define DAS16_AI_MSB 1 | |
194 | #define DAS16_MUX 2 | |
195 | #define DAS16_DIO 3 | |
196 | #define DAS16_AO_LSB(x) ((x)?6:4) | |
197 | #define DAS16_AO_MSB(x) ((x)?7:5) | |
198 | #define DAS16_STATUS 8 | |
199 | #define BUSY (1<<7) | |
200 | #define UNIPOLAR (1<<6) | |
201 | #define DAS16_MUXBIT (1<<5) | |
202 | #define DAS16_INT (1<<4) | |
203 | #define DAS16_CONTROL 9 | |
204 | #define DAS16_INTE (1<<7) | |
205 | #define DAS16_IRQ(x) (((x) & 0x7) << 4) | |
206 | #define DMA_ENABLE (1<<2) | |
207 | #define PACING_MASK 0x3 | |
208 | #define INT_PACER 0x03 | |
209 | #define EXT_PACER 0x02 | |
210 | #define DAS16_SOFT 0x00 | |
211 | #define DAS16_PACER 0x0A | |
212 | #define DAS16_CTR0 (1<<1) | |
213 | #define DAS16_TRIG0 (1<<0) | |
214 | #define BURST_LEN_BITS(x) (((x) & 0xf) << 4) | |
215 | #define DAS16_GAIN 0x0B | |
216 | #define DAS16_CNTR0_DATA 0x0C | |
217 | #define DAS16_CNTR1_DATA 0x0D | |
218 | #define DAS16_CNTR2_DATA 0x0E | |
219 | #define DAS16_CNTR_CONTROL 0x0F | |
220 | #define DAS16_TERM_CNT 0x00 | |
221 | #define DAS16_ONE_SHOT 0x02 | |
222 | #define DAS16_RATE_GEN 0x04 | |
223 | #define DAS16_CNTR_LSB_MSB 0x30 | |
224 | #define DAS16_CNTR0 0x00 | |
225 | #define DAS16_CNTR1 0x40 | |
226 | #define DAS16_CNTR2 0x80 | |
227 | ||
228 | #define DAS1600_CONV 0x404 | |
229 | #define DAS1600_CONV_DISABLE 0x40 | |
230 | #define DAS1600_BURST 0x405 | |
231 | #define DAS1600_BURST_VAL 0x40 | |
232 | #define DAS1600_ENABLE 0x406 | |
233 | #define DAS1600_ENABLE_VAL 0x40 | |
234 | #define DAS1600_STATUS_B 0x407 | |
235 | #define DAS1600_BME 0x40 | |
236 | #define DAS1600_ME 0x20 | |
237 | #define DAS1600_CD 0x10 | |
238 | #define DAS1600_WS 0x02 | |
239 | #define DAS1600_CLK_10MHZ 0x01 | |
240 | ||
9ced1de6 | 241 | static const struct comedi_lrange range_das1x01_bip = { 4, { |
0a85b6f0 MT |
242 | BIP_RANGE(10), |
243 | BIP_RANGE(1), | |
244 | BIP_RANGE(0.1), | |
245 | BIP_RANGE(0.01), | |
246 | } | |
e64374f8 | 247 | }; |
0a85b6f0 | 248 | |
9ced1de6 | 249 | static const struct comedi_lrange range_das1x01_unip = { 4, { |
0a85b6f0 MT |
250 | UNI_RANGE(10), |
251 | UNI_RANGE(1), | |
252 | UNI_RANGE(0.1), | |
253 | UNI_RANGE(0.01), | |
254 | } | |
e64374f8 | 255 | }; |
0a85b6f0 | 256 | |
9ced1de6 | 257 | static const struct comedi_lrange range_das1x02_bip = { 4, { |
0a85b6f0 MT |
258 | BIP_RANGE(10), |
259 | BIP_RANGE(5), | |
260 | BIP_RANGE(2.5), | |
261 | BIP_RANGE(1.25), | |
262 | } | |
e64374f8 | 263 | }; |
0a85b6f0 | 264 | |
9ced1de6 | 265 | static const struct comedi_lrange range_das1x02_unip = { 4, { |
0a85b6f0 MT |
266 | UNI_RANGE(10), |
267 | UNI_RANGE(5), | |
268 | UNI_RANGE(2.5), | |
269 | UNI_RANGE(1.25), | |
270 | } | |
e64374f8 | 271 | }; |
0a85b6f0 | 272 | |
9ced1de6 | 273 | static const struct comedi_lrange range_das16jr = { 9, { |
0a85b6f0 MT |
274 | /* also used by 16/330 */ |
275 | BIP_RANGE(10), | |
276 | BIP_RANGE(5), | |
277 | BIP_RANGE(2.5), | |
278 | BIP_RANGE(1.25), | |
279 | BIP_RANGE(0.625), | |
280 | UNI_RANGE(10), | |
281 | UNI_RANGE(5), | |
282 | UNI_RANGE(2.5), | |
283 | UNI_RANGE(1.25), | |
284 | } | |
e64374f8 | 285 | }; |
0a85b6f0 | 286 | |
9ced1de6 | 287 | static const struct comedi_lrange range_das16jr_16 = { 8, { |
0a85b6f0 MT |
288 | BIP_RANGE(10), |
289 | BIP_RANGE(5), | |
290 | BIP_RANGE(2.5), | |
291 | BIP_RANGE(1.25), | |
292 | UNI_RANGE(10), | |
293 | UNI_RANGE(5), | |
294 | UNI_RANGE(2.5), | |
295 | UNI_RANGE(1.25), | |
296 | } | |
e64374f8 DS |
297 | }; |
298 | ||
299 | static const int das16jr_gainlist[] = { 8, 0, 1, 2, 3, 4, 5, 6, 7 }; | |
300 | static const int das16jr_16_gainlist[] = { 0, 1, 2, 3, 4, 5, 6, 7 }; | |
301 | static const int das1600_gainlist[] = { 0, 1, 2, 3 }; | |
0a85b6f0 | 302 | |
e64374f8 DS |
303 | enum { |
304 | das16_pg_none = 0, | |
305 | das16_pg_16jr, | |
306 | das16_pg_16jr_16, | |
307 | das16_pg_1601, | |
308 | das16_pg_1602, | |
309 | }; | |
310 | static const int *const das16_gainlists[] = { | |
311 | NULL, | |
312 | das16jr_gainlist, | |
313 | das16jr_16_gainlist, | |
314 | das1600_gainlist, | |
315 | das1600_gainlist, | |
316 | }; | |
0a85b6f0 | 317 | |
9ced1de6 | 318 | static const struct comedi_lrange *const das16_ai_uni_lranges[] = { |
e64374f8 DS |
319 | &range_unknown, |
320 | &range_das16jr, | |
321 | &range_das16jr_16, | |
322 | &range_das1x01_unip, | |
323 | &range_das1x02_unip, | |
324 | }; | |
0a85b6f0 | 325 | |
9ced1de6 | 326 | static const struct comedi_lrange *const das16_ai_bip_lranges[] = { |
e64374f8 DS |
327 | &range_unknown, |
328 | &range_das16jr, | |
329 | &range_das16jr_16, | |
330 | &range_das1x01_bip, | |
331 | &range_das1x02_bip, | |
332 | }; | |
333 | ||
334 | struct munge_info { | |
335 | uint8_t byte; | |
336 | unsigned have_byte:1; | |
337 | }; | |
338 | ||
814900c9 | 339 | static int das16_ao_winsn(struct comedi_device *dev, struct comedi_subdevice *s, |
0a85b6f0 | 340 | struct comedi_insn *insn, unsigned int *data); |
814900c9 | 341 | static int das16_do_wbits(struct comedi_device *dev, struct comedi_subdevice *s, |
0a85b6f0 | 342 | struct comedi_insn *insn, unsigned int *data); |
814900c9 | 343 | static int das16_di_rbits(struct comedi_device *dev, struct comedi_subdevice *s, |
0a85b6f0 | 344 | struct comedi_insn *insn, unsigned int *data); |
814900c9 | 345 | static int das16_ai_rinsn(struct comedi_device *dev, struct comedi_subdevice *s, |
0a85b6f0 | 346 | struct comedi_insn *insn, unsigned int *data); |
814900c9 BP |
347 | |
348 | static int das16_cmd_test(struct comedi_device *dev, struct comedi_subdevice *s, | |
0a85b6f0 MT |
349 | struct comedi_cmd *cmd); |
350 | static int das16_cmd_exec(struct comedi_device *dev, | |
351 | struct comedi_subdevice *s); | |
814900c9 | 352 | static int das16_cancel(struct comedi_device *dev, struct comedi_subdevice *s); |
0a85b6f0 MT |
353 | static void das16_ai_munge(struct comedi_device *dev, |
354 | struct comedi_subdevice *s, void *array, | |
355 | unsigned int num_bytes, | |
356 | unsigned int start_chan_index); | |
e64374f8 | 357 | |
814900c9 | 358 | static void das16_reset(struct comedi_device *dev); |
70265d24 | 359 | static irqreturn_t das16_dma_interrupt(int irq, void *d); |
e64374f8 | 360 | static void das16_timer_interrupt(unsigned long arg); |
814900c9 | 361 | static void das16_interrupt(struct comedi_device *dev); |
e64374f8 | 362 | |
814900c9 | 363 | static unsigned int das16_set_pacer(struct comedi_device *dev, unsigned int ns, |
0a85b6f0 | 364 | int flags); |
814900c9 BP |
365 | static int das1600_mode_detect(struct comedi_device *dev); |
366 | static unsigned int das16_suggest_transfer_size(struct comedi_device *dev, | |
0a85b6f0 | 367 | struct comedi_cmd cmd); |
e64374f8 | 368 | |
814900c9 | 369 | static void reg_dump(struct comedi_device *dev); |
e64374f8 | 370 | |
947a33fd | 371 | struct das16_board { |
e64374f8 DS |
372 | const char *name; |
373 | void *ai; | |
374 | unsigned int ai_nbits; | |
2696fb57 | 375 | unsigned int ai_speed; /* max conversion speed in nanosec */ |
e64374f8 DS |
376 | unsigned int ai_pg; |
377 | void *ao; | |
378 | unsigned int ao_nbits; | |
379 | void *di; | |
380 | void *do_; | |
381 | ||
382 | unsigned int i8255_offset; | |
383 | unsigned int i8254_offset; | |
384 | ||
385 | unsigned int size; | |
386 | unsigned int id; | |
947a33fd | 387 | }; |
e64374f8 | 388 | |
947a33fd | 389 | static const struct das16_board das16_boards[] = { |
e64374f8 | 390 | { |
0a85b6f0 MT |
391 | .name = "das-16", |
392 | .ai = das16_ai_rinsn, | |
393 | .ai_nbits = 12, | |
394 | .ai_speed = 15000, | |
395 | .ai_pg = das16_pg_none, | |
396 | .ao = das16_ao_winsn, | |
397 | .ao_nbits = 12, | |
398 | .di = das16_di_rbits, | |
399 | .do_ = das16_do_wbits, | |
400 | .i8255_offset = 0x10, | |
401 | .i8254_offset = 0x0c, | |
402 | .size = 0x14, | |
403 | .id = 0x00, | |
404 | }, | |
e64374f8 | 405 | { |
0a85b6f0 MT |
406 | .name = "das-16g", |
407 | .ai = das16_ai_rinsn, | |
408 | .ai_nbits = 12, | |
409 | .ai_speed = 15000, | |
410 | .ai_pg = das16_pg_none, | |
411 | .ao = das16_ao_winsn, | |
412 | .ao_nbits = 12, | |
413 | .di = das16_di_rbits, | |
414 | .do_ = das16_do_wbits, | |
415 | .i8255_offset = 0x10, | |
416 | .i8254_offset = 0x0c, | |
417 | .size = 0x14, | |
418 | .id = 0x00, | |
419 | }, | |
e64374f8 | 420 | { |
0a85b6f0 MT |
421 | .name = "das-16f", |
422 | .ai = das16_ai_rinsn, | |
423 | .ai_nbits = 12, | |
424 | .ai_speed = 8500, | |
425 | .ai_pg = das16_pg_none, | |
426 | .ao = das16_ao_winsn, | |
427 | .ao_nbits = 12, | |
428 | .di = das16_di_rbits, | |
429 | .do_ = das16_do_wbits, | |
430 | .i8255_offset = 0x10, | |
431 | .i8254_offset = 0x0c, | |
432 | .size = 0x14, | |
433 | .id = 0x00, | |
434 | }, | |
e64374f8 | 435 | { |
0a85b6f0 MT |
436 | .name = "cio-das16", /* cio-das16.pdf */ |
437 | .ai = das16_ai_rinsn, | |
438 | .ai_nbits = 12, | |
439 | .ai_speed = 20000, | |
440 | .ai_pg = das16_pg_none, | |
441 | .ao = das16_ao_winsn, | |
442 | .ao_nbits = 12, | |
443 | .di = das16_di_rbits, | |
444 | .do_ = das16_do_wbits, | |
445 | .i8255_offset = 0x10, | |
446 | .i8254_offset = 0x0c, | |
447 | .size = 0x14, | |
448 | .id = 0x80, | |
449 | }, | |
e64374f8 | 450 | { |
0a85b6f0 MT |
451 | .name = "cio-das16/f", /* das16.pdf */ |
452 | .ai = das16_ai_rinsn, | |
453 | .ai_nbits = 12, | |
454 | .ai_speed = 10000, | |
455 | .ai_pg = das16_pg_none, | |
456 | .ao = das16_ao_winsn, | |
457 | .ao_nbits = 12, | |
458 | .di = das16_di_rbits, | |
459 | .do_ = das16_do_wbits, | |
460 | .i8255_offset = 0x10, | |
461 | .i8254_offset = 0x0c, | |
462 | .size = 0x14, | |
463 | .id = 0x80, | |
464 | }, | |
e64374f8 | 465 | { |
0a85b6f0 MT |
466 | .name = "cio-das16/jr", /* cio-das16jr.pdf */ |
467 | .ai = das16_ai_rinsn, | |
468 | .ai_nbits = 12, | |
469 | .ai_speed = 7692, | |
470 | .ai_pg = das16_pg_16jr, | |
471 | .ao = NULL, | |
472 | .di = das16_di_rbits, | |
473 | .do_ = das16_do_wbits, | |
474 | .i8255_offset = 0, | |
475 | .i8254_offset = 0x0c, | |
476 | .size = 0x10, | |
477 | .id = 0x00, | |
478 | }, | |
e64374f8 | 479 | { |
0a85b6f0 MT |
480 | .name = "pc104-das16jr", /* pc104-das16jr_xx.pdf */ |
481 | .ai = das16_ai_rinsn, | |
482 | .ai_nbits = 12, | |
483 | .ai_speed = 3300, | |
484 | .ai_pg = das16_pg_16jr, | |
485 | .ao = NULL, | |
486 | .di = das16_di_rbits, | |
487 | .do_ = das16_do_wbits, | |
488 | .i8255_offset = 0, | |
489 | .i8254_offset = 0x0c, | |
490 | .size = 0x10, | |
491 | .id = 0x00, | |
492 | }, | |
e64374f8 | 493 | { |
0a85b6f0 MT |
494 | .name = "cio-das16jr/16", /* cio-das16jr_16.pdf */ |
495 | .ai = das16_ai_rinsn, | |
496 | .ai_nbits = 16, | |
497 | .ai_speed = 10000, | |
498 | .ai_pg = das16_pg_16jr_16, | |
499 | .ao = NULL, | |
500 | .di = das16_di_rbits, | |
501 | .do_ = das16_do_wbits, | |
502 | .i8255_offset = 0, | |
503 | .i8254_offset = 0x0c, | |
504 | .size = 0x10, | |
505 | .id = 0x00, | |
506 | }, | |
e64374f8 | 507 | { |
0a85b6f0 MT |
508 | .name = "pc104-das16jr/16", /* pc104-das16jr_xx.pdf */ |
509 | .ai = das16_ai_rinsn, | |
510 | .ai_nbits = 16, | |
511 | .ai_speed = 10000, | |
512 | .ai_pg = das16_pg_16jr_16, | |
513 | .ao = NULL, | |
514 | .di = das16_di_rbits, | |
515 | .do_ = das16_do_wbits, | |
516 | .i8255_offset = 0, | |
517 | .i8254_offset = 0x0c, | |
518 | .size = 0x10, | |
519 | .id = 0x00, | |
520 | }, | |
e64374f8 | 521 | { |
0a85b6f0 MT |
522 | .name = "das-1201", /* 4924.pdf (keithley user's manual) */ |
523 | .ai = das16_ai_rinsn, | |
524 | .ai_nbits = 12, | |
525 | .ai_speed = 20000, | |
526 | .ai_pg = das16_pg_none, | |
527 | .ao = NULL, | |
528 | .di = das16_di_rbits, | |
529 | .do_ = das16_do_wbits, | |
530 | .i8255_offset = 0x400, | |
531 | .i8254_offset = 0x0c, | |
532 | .size = 0x408, | |
533 | .id = 0x20, | |
534 | }, | |
e64374f8 | 535 | { |
0a85b6f0 MT |
536 | .name = "das-1202", /* 4924.pdf (keithley user's manual) */ |
537 | .ai = das16_ai_rinsn, | |
538 | .ai_nbits = 12, | |
539 | .ai_speed = 10000, | |
540 | .ai_pg = das16_pg_none, | |
541 | .ao = NULL, | |
542 | .di = das16_di_rbits, | |
543 | .do_ = das16_do_wbits, | |
544 | .i8255_offset = 0x400, | |
545 | .i8254_offset = 0x0c, | |
546 | .size = 0x408, | |
547 | .id = 0x20, | |
548 | }, | |
e64374f8 | 549 | { |
0a85b6f0 MT |
550 | .name = "das-1401", /* 4919.pdf and 4922.pdf (keithley user's manual) */ |
551 | .ai = das16_ai_rinsn, | |
552 | .ai_nbits = 12, | |
553 | .ai_speed = 10000, | |
554 | .ai_pg = das16_pg_1601, | |
555 | .ao = NULL, | |
556 | .di = das16_di_rbits, | |
557 | .do_ = das16_do_wbits, | |
558 | .i8255_offset = 0x0, | |
559 | .i8254_offset = 0x0c, | |
560 | .size = 0x408, | |
561 | .id = 0xc0 /* 4919.pdf says id bits are 0xe0, 4922.pdf says 0xc0 */ | |
562 | }, | |
e64374f8 | 563 | { |
0a85b6f0 MT |
564 | .name = "das-1402", /* 4919.pdf and 4922.pdf (keithley user's manual) */ |
565 | .ai = das16_ai_rinsn, | |
566 | .ai_nbits = 12, | |
567 | .ai_speed = 10000, | |
568 | .ai_pg = das16_pg_1602, | |
569 | .ao = NULL, | |
570 | .di = das16_di_rbits, | |
571 | .do_ = das16_do_wbits, | |
572 | .i8255_offset = 0x0, | |
573 | .i8254_offset = 0x0c, | |
574 | .size = 0x408, | |
575 | .id = 0xc0 /* 4919.pdf says id bits are 0xe0, 4922.pdf says 0xc0 */ | |
576 | }, | |
e64374f8 | 577 | { |
0a85b6f0 MT |
578 | .name = "das-1601", /* 4919.pdf */ |
579 | .ai = das16_ai_rinsn, | |
580 | .ai_nbits = 12, | |
581 | .ai_speed = 10000, | |
582 | .ai_pg = das16_pg_1601, | |
583 | .ao = das16_ao_winsn, | |
584 | .ao_nbits = 12, | |
585 | .di = das16_di_rbits, | |
586 | .do_ = das16_do_wbits, | |
587 | .i8255_offset = 0x400, | |
588 | .i8254_offset = 0x0c, | |
589 | .size = 0x408, | |
590 | .id = 0xc0}, | |
e64374f8 | 591 | { |
0a85b6f0 MT |
592 | .name = "das-1602", /* 4919.pdf */ |
593 | .ai = das16_ai_rinsn, | |
594 | .ai_nbits = 12, | |
595 | .ai_speed = 10000, | |
596 | .ai_pg = das16_pg_1602, | |
597 | .ao = das16_ao_winsn, | |
598 | .ao_nbits = 12, | |
599 | .di = das16_di_rbits, | |
600 | .do_ = das16_do_wbits, | |
601 | .i8255_offset = 0x400, | |
602 | .i8254_offset = 0x0c, | |
603 | .size = 0x408, | |
604 | .id = 0xc0}, | |
e64374f8 | 605 | { |
0a85b6f0 MT |
606 | .name = "cio-das1401/12", /* cio-das1400_series.pdf */ |
607 | .ai = das16_ai_rinsn, | |
608 | .ai_nbits = 12, | |
609 | .ai_speed = 6250, | |
610 | .ai_pg = das16_pg_1601, | |
611 | .ao = NULL, | |
612 | .di = das16_di_rbits, | |
613 | .do_ = das16_do_wbits, | |
614 | .i8255_offset = 0, | |
615 | .i8254_offset = 0x0c, | |
616 | .size = 0x408, | |
617 | .id = 0xc0}, | |
e64374f8 | 618 | { |
0a85b6f0 MT |
619 | .name = "cio-das1402/12", /* cio-das1400_series.pdf */ |
620 | .ai = das16_ai_rinsn, | |
621 | .ai_nbits = 12, | |
622 | .ai_speed = 6250, | |
623 | .ai_pg = das16_pg_1602, | |
624 | .ao = NULL, | |
625 | .di = das16_di_rbits, | |
626 | .do_ = das16_do_wbits, | |
627 | .i8255_offset = 0, | |
628 | .i8254_offset = 0x0c, | |
629 | .size = 0x408, | |
630 | .id = 0xc0}, | |
e64374f8 | 631 | { |
0a85b6f0 MT |
632 | .name = "cio-das1402/16", /* cio-das1400_series.pdf */ |
633 | .ai = das16_ai_rinsn, | |
634 | .ai_nbits = 16, | |
635 | .ai_speed = 10000, | |
636 | .ai_pg = das16_pg_1602, | |
637 | .ao = NULL, | |
638 | .di = das16_di_rbits, | |
639 | .do_ = das16_do_wbits, | |
640 | .i8255_offset = 0, | |
641 | .i8254_offset = 0x0c, | |
642 | .size = 0x408, | |
643 | .id = 0xc0}, | |
e64374f8 | 644 | { |
0a85b6f0 MT |
645 | .name = "cio-das1601/12", /* cio-das160x-1x.pdf */ |
646 | .ai = das16_ai_rinsn, | |
647 | .ai_nbits = 12, | |
648 | .ai_speed = 6250, | |
649 | .ai_pg = das16_pg_1601, | |
650 | .ao = das16_ao_winsn, | |
651 | .ao_nbits = 12, | |
652 | .di = das16_di_rbits, | |
653 | .do_ = das16_do_wbits, | |
654 | .i8255_offset = 0x400, | |
655 | .i8254_offset = 0x0c, | |
656 | .size = 0x408, | |
657 | .id = 0xc0}, | |
e64374f8 | 658 | { |
0a85b6f0 MT |
659 | .name = "cio-das1602/12", /* cio-das160x-1x.pdf */ |
660 | .ai = das16_ai_rinsn, | |
661 | .ai_nbits = 12, | |
662 | .ai_speed = 10000, | |
663 | .ai_pg = das16_pg_1602, | |
664 | .ao = das16_ao_winsn, | |
665 | .ao_nbits = 12, | |
666 | .di = das16_di_rbits, | |
667 | .do_ = das16_do_wbits, | |
668 | .i8255_offset = 0x400, | |
669 | .i8254_offset = 0x0c, | |
670 | .size = 0x408, | |
671 | .id = 0xc0}, | |
e64374f8 | 672 | { |
0a85b6f0 MT |
673 | .name = "cio-das1602/16", /* cio-das160x-1x.pdf */ |
674 | .ai = das16_ai_rinsn, | |
675 | .ai_nbits = 16, | |
676 | .ai_speed = 10000, | |
677 | .ai_pg = das16_pg_1602, | |
678 | .ao = das16_ao_winsn, | |
679 | .ao_nbits = 12, | |
680 | .di = das16_di_rbits, | |
681 | .do_ = das16_do_wbits, | |
682 | .i8255_offset = 0x400, | |
683 | .i8254_offset = 0x0c, | |
684 | .size = 0x408, | |
685 | .id = 0xc0}, | |
e64374f8 | 686 | { |
0a85b6f0 MT |
687 | .name = "cio-das16/330", /* ? */ |
688 | .ai = das16_ai_rinsn, | |
689 | .ai_nbits = 12, | |
690 | .ai_speed = 3030, | |
691 | .ai_pg = das16_pg_16jr, | |
692 | .ao = NULL, | |
693 | .di = das16_di_rbits, | |
694 | .do_ = das16_do_wbits, | |
695 | .i8255_offset = 0, | |
696 | .i8254_offset = 0x0c, | |
697 | .size = 0x14, | |
698 | .id = 0xf0}, | |
e64374f8 DS |
699 | #if 0 |
700 | { | |
0a85b6f0 MT |
701 | .name = "das16/330i", /* ? */ |
702 | }, | |
e64374f8 | 703 | { |
0a85b6f0 MT |
704 | .name = "das16/jr/ctr5", /* ? */ |
705 | }, | |
e64374f8 | 706 | { |
0a85b6f0 MT |
707 | .name = "cio-das16/m1/16", /* cio-das16_m1_16.pdf, this board is a bit quirky, no dma */ |
708 | }, | |
e64374f8 DS |
709 | #endif |
710 | }; | |
711 | ||
da91b269 BP |
712 | static int das16_attach(struct comedi_device *dev, struct comedi_devconfig *it); |
713 | static int das16_detach(struct comedi_device *dev); | |
139dfbdf | 714 | static struct comedi_driver driver_das16 = { |
68c3dbff BP |
715 | .driver_name = "das16", |
716 | .module = THIS_MODULE, | |
717 | .attach = das16_attach, | |
718 | .detach = das16_detach, | |
719 | .board_name = &das16_boards[0].name, | |
8629efa4 | 720 | .num_names = ARRAY_SIZE(das16_boards), |
68c3dbff | 721 | .offset = sizeof(das16_boards[0]), |
e64374f8 DS |
722 | }; |
723 | ||
724 | #define DAS16_TIMEOUT 1000 | |
725 | ||
726 | /* Period for timer interrupt in jiffies. It's a function | |
727 | * to deal with possibility of dynamic HZ patches */ | |
728 | static inline int timer_period(void) | |
729 | { | |
730 | return HZ / 20; | |
731 | } | |
0a85b6f0 | 732 | |
e64374f8 | 733 | struct das16_private_struct { |
2696fb57 BP |
734 | unsigned int ai_unipolar; /* unipolar flag */ |
735 | unsigned int ai_singleended; /* single ended flag */ | |
736 | unsigned int clockbase; /* master clock speed in ns */ | |
737 | volatile unsigned int control_state; /* dma, interrupt and trigger control bits */ | |
738 | volatile unsigned long adc_byte_count; /* number of bytes remaining */ | |
739 | unsigned int divisor1; /* divisor dividing master clock to get conversion frequency */ | |
740 | unsigned int divisor2; /* divisor dividing master clock to get conversion frequency */ | |
741 | unsigned int dma_chan; /* dma channel */ | |
e64374f8 DS |
742 | uint16_t *dma_buffer[2]; |
743 | dma_addr_t dma_buffer_addr[2]; | |
744 | unsigned int current_buffer; | |
2696fb57 BP |
745 | volatile unsigned int dma_transfer_size; /* target number of bytes to transfer per dma shot */ |
746 | /* user-defined analog input and output ranges defined from config options */ | |
9ced1de6 BP |
747 | struct comedi_lrange *user_ai_range_table; |
748 | struct comedi_lrange *user_ao_range_table; | |
e64374f8 | 749 | |
2696fb57 | 750 | struct timer_list timer; /* for timed interrupt */ |
e64374f8 | 751 | volatile short timer_running; |
2696fb57 | 752 | volatile short timer_mode; /* true if using timer mode */ |
e64374f8 DS |
753 | }; |
754 | #define devpriv ((struct das16_private_struct *)(dev->private)) | |
947a33fd | 755 | #define thisboard ((struct das16_board *)(dev->board_ptr)) |
e64374f8 | 756 | |
da91b269 | 757 | static int das16_cmd_test(struct comedi_device *dev, struct comedi_subdevice *s, |
0a85b6f0 | 758 | struct comedi_cmd *cmd) |
e64374f8 DS |
759 | { |
760 | int err = 0, tmp; | |
761 | int gain, start_chan, i; | |
762 | int mask; | |
763 | ||
764 | /* make sure triggers are valid */ | |
765 | tmp = cmd->start_src; | |
766 | cmd->start_src &= TRIG_NOW; | |
767 | if (!cmd->start_src || tmp != cmd->start_src) | |
768 | err++; | |
769 | ||
770 | tmp = cmd->scan_begin_src; | |
771 | mask = TRIG_FOLLOW; | |
2696fb57 | 772 | /* if board supports burst mode */ |
e64374f8 DS |
773 | if (thisboard->size > 0x400) |
774 | mask |= TRIG_TIMER | TRIG_EXT; | |
775 | cmd->scan_begin_src &= mask; | |
776 | if (!cmd->scan_begin_src || tmp != cmd->scan_begin_src) | |
777 | err++; | |
778 | ||
779 | tmp = cmd->convert_src; | |
780 | mask = TRIG_TIMER | TRIG_EXT; | |
2696fb57 | 781 | /* if board supports burst mode */ |
e64374f8 DS |
782 | if (thisboard->size > 0x400) |
783 | mask |= TRIG_NOW; | |
784 | cmd->convert_src &= mask; | |
785 | if (!cmd->convert_src || tmp != cmd->convert_src) | |
786 | err++; | |
787 | ||
788 | tmp = cmd->scan_end_src; | |
789 | cmd->scan_end_src &= TRIG_COUNT; | |
790 | if (!cmd->scan_end_src || tmp != cmd->scan_end_src) | |
791 | err++; | |
792 | ||
793 | tmp = cmd->stop_src; | |
794 | cmd->stop_src &= TRIG_COUNT | TRIG_NONE; | |
795 | if (!cmd->stop_src || tmp != cmd->stop_src) | |
796 | err++; | |
797 | ||
798 | if (err) | |
799 | return 1; | |
800 | ||
801 | /* step 2: make sure trigger sources are unique and mutually compatible */ | |
802 | if (cmd->scan_begin_src != TRIG_TIMER && | |
0a85b6f0 MT |
803 | cmd->scan_begin_src != TRIG_EXT && |
804 | cmd->scan_begin_src != TRIG_FOLLOW) | |
e64374f8 DS |
805 | err++; |
806 | if (cmd->convert_src != TRIG_TIMER && | |
0a85b6f0 | 807 | cmd->convert_src != TRIG_EXT && cmd->convert_src != TRIG_NOW) |
e64374f8 DS |
808 | err++; |
809 | if (cmd->stop_src != TRIG_NONE && cmd->stop_src != TRIG_COUNT) | |
810 | err++; | |
811 | ||
2696fb57 | 812 | /* make sure scan_begin_src and convert_src dont conflict */ |
e64374f8 DS |
813 | if (cmd->scan_begin_src == TRIG_FOLLOW && cmd->convert_src == TRIG_NOW) |
814 | err++; | |
815 | if (cmd->scan_begin_src != TRIG_FOLLOW && cmd->convert_src != TRIG_NOW) | |
816 | err++; | |
817 | ||
818 | if (err) | |
819 | return 2; | |
820 | ||
821 | /* step 3: make sure arguments are trivially compatible */ | |
822 | if (cmd->start_arg != 0) { | |
823 | cmd->start_arg = 0; | |
824 | err++; | |
825 | } | |
826 | ||
827 | if (cmd->scan_begin_src == TRIG_FOLLOW) { | |
828 | /* internal trigger */ | |
829 | if (cmd->scan_begin_arg != 0) { | |
830 | cmd->scan_begin_arg = 0; | |
831 | err++; | |
832 | } | |
833 | } | |
834 | ||
835 | if (cmd->scan_end_arg != cmd->chanlist_len) { | |
836 | cmd->scan_end_arg = cmd->chanlist_len; | |
837 | err++; | |
838 | } | |
2696fb57 | 839 | /* check against maximum frequency */ |
e64374f8 DS |
840 | if (cmd->scan_begin_src == TRIG_TIMER) { |
841 | if (cmd->scan_begin_arg < | |
0a85b6f0 | 842 | thisboard->ai_speed * cmd->chanlist_len) { |
e64374f8 | 843 | cmd->scan_begin_arg = |
0a85b6f0 | 844 | thisboard->ai_speed * cmd->chanlist_len; |
e64374f8 DS |
845 | err++; |
846 | } | |
847 | } | |
848 | if (cmd->convert_src == TRIG_TIMER) { | |
849 | if (cmd->convert_arg < thisboard->ai_speed) { | |
850 | cmd->convert_arg = thisboard->ai_speed; | |
851 | err++; | |
852 | } | |
853 | } | |
854 | ||
855 | if (cmd->stop_src == TRIG_NONE) { | |
856 | if (cmd->stop_arg != 0) { | |
857 | cmd->stop_arg = 0; | |
858 | err++; | |
859 | } | |
860 | } | |
861 | if (err) | |
862 | return 3; | |
863 | ||
2696fb57 | 864 | /* step 4: fix up arguments */ |
e64374f8 DS |
865 | if (cmd->scan_begin_src == TRIG_TIMER) { |
866 | unsigned int tmp = cmd->scan_begin_arg; | |
2696fb57 | 867 | /* set divisors, correct timing arguments */ |
e64374f8 | 868 | i8253_cascade_ns_to_timer_2div(devpriv->clockbase, |
0a85b6f0 MT |
869 | &(devpriv->divisor1), |
870 | &(devpriv->divisor2), | |
871 | &(cmd->scan_begin_arg), | |
872 | cmd->flags & TRIG_ROUND_MASK); | |
e64374f8 DS |
873 | err += (tmp != cmd->scan_begin_arg); |
874 | } | |
875 | if (cmd->convert_src == TRIG_TIMER) { | |
876 | unsigned int tmp = cmd->convert_arg; | |
2696fb57 | 877 | /* set divisors, correct timing arguments */ |
e64374f8 | 878 | i8253_cascade_ns_to_timer_2div(devpriv->clockbase, |
0a85b6f0 MT |
879 | &(devpriv->divisor1), |
880 | &(devpriv->divisor2), | |
881 | &(cmd->convert_arg), | |
882 | cmd->flags & TRIG_ROUND_MASK); | |
e64374f8 DS |
883 | err += (tmp != cmd->convert_arg); |
884 | } | |
885 | if (err) | |
886 | return 4; | |
887 | ||
2696fb57 | 888 | /* check channel/gain list against card's limitations */ |
e64374f8 DS |
889 | if (cmd->chanlist) { |
890 | gain = CR_RANGE(cmd->chanlist[0]); | |
891 | start_chan = CR_CHAN(cmd->chanlist[0]); | |
892 | for (i = 1; i < cmd->chanlist_len; i++) { | |
893 | if (CR_CHAN(cmd->chanlist[i]) != | |
0a85b6f0 | 894 | (start_chan + i) % s->n_chan) { |
e64374f8 | 895 | comedi_error(dev, |
0a85b6f0 | 896 | "entries in chanlist must be consecutive channels, counting upwards\n"); |
e64374f8 DS |
897 | err++; |
898 | } | |
899 | if (CR_RANGE(cmd->chanlist[i]) != gain) { | |
900 | comedi_error(dev, | |
0a85b6f0 | 901 | "entries in chanlist must all have the same gain\n"); |
e64374f8 DS |
902 | err++; |
903 | } | |
904 | } | |
905 | } | |
906 | if (err) | |
907 | return 5; | |
908 | ||
909 | return 0; | |
910 | } | |
911 | ||
da91b269 | 912 | static int das16_cmd_exec(struct comedi_device *dev, struct comedi_subdevice *s) |
e64374f8 | 913 | { |
d163679c | 914 | struct comedi_async *async = s->async; |
ea6d0d4c | 915 | struct comedi_cmd *cmd = &async->cmd; |
e64374f8 DS |
916 | unsigned int byte; |
917 | unsigned long flags; | |
918 | int range; | |
919 | ||
920 | if (devpriv->dma_chan == 0 || (dev->irq == 0 | |
0a85b6f0 | 921 | && devpriv->timer_mode == 0)) { |
e64374f8 | 922 | comedi_error(dev, |
0a85b6f0 | 923 | "irq (or use of 'timer mode') dma required to execute comedi_cmd"); |
e64374f8 DS |
924 | return -1; |
925 | } | |
926 | if (cmd->flags & TRIG_RT) { | |
927 | comedi_error(dev, | |
0a85b6f0 | 928 | "isa dma transfers cannot be performed with TRIG_RT, aborting"); |
e64374f8 DS |
929 | return -1; |
930 | } | |
931 | ||
932 | devpriv->adc_byte_count = | |
0a85b6f0 | 933 | cmd->stop_arg * cmd->chanlist_len * sizeof(uint16_t); |
e64374f8 | 934 | |
2696fb57 | 935 | /* disable conversions for das1600 mode */ |
e64374f8 DS |
936 | if (thisboard->size > 0x400) { |
937 | outb(DAS1600_CONV_DISABLE, dev->iobase + DAS1600_CONV); | |
938 | } | |
2696fb57 | 939 | /* set scan limits */ |
e64374f8 DS |
940 | byte = CR_CHAN(cmd->chanlist[0]); |
941 | byte |= CR_CHAN(cmd->chanlist[cmd->chanlist_len - 1]) << 4; | |
942 | outb(byte, dev->iobase + DAS16_MUX); | |
943 | ||
944 | /* set gain (this is also burst rate register but according to | |
945 | * computer boards manual, burst rate does nothing, even on keithley cards) */ | |
946 | if (thisboard->ai_pg != das16_pg_none) { | |
947 | range = CR_RANGE(cmd->chanlist[0]); | |
948 | outb((das16_gainlists[thisboard->ai_pg])[range], | |
0a85b6f0 | 949 | dev->iobase + DAS16_GAIN); |
e64374f8 DS |
950 | } |
951 | ||
952 | /* set counter mode and counts */ | |
953 | cmd->convert_arg = | |
0a85b6f0 MT |
954 | das16_set_pacer(dev, cmd->convert_arg, |
955 | cmd->flags & TRIG_ROUND_MASK); | |
e64374f8 DS |
956 | DEBUG_PRINT("pacer period: %d ns\n", cmd->convert_arg); |
957 | ||
958 | /* enable counters */ | |
959 | byte = 0; | |
960 | /* Enable burst mode if appropriate. */ | |
961 | if (thisboard->size > 0x400) { | |
962 | if (cmd->convert_src == TRIG_NOW) { | |
963 | outb(DAS1600_BURST_VAL, dev->iobase + DAS1600_BURST); | |
2696fb57 | 964 | /* set burst length */ |
e64374f8 DS |
965 | byte |= BURST_LEN_BITS(cmd->chanlist_len - 1); |
966 | } else { | |
967 | outb(0, dev->iobase + DAS1600_BURST); | |
968 | } | |
969 | } | |
970 | outb(byte, dev->iobase + DAS16_PACER); | |
971 | ||
2696fb57 | 972 | /* set up dma transfer */ |
e64374f8 DS |
973 | flags = claim_dma_lock(); |
974 | disable_dma(devpriv->dma_chan); | |
975 | /* clear flip-flop to make sure 2-byte registers for | |
976 | * count and address get set correctly */ | |
977 | clear_dma_ff(devpriv->dma_chan); | |
978 | devpriv->current_buffer = 0; | |
979 | set_dma_addr(devpriv->dma_chan, | |
0a85b6f0 | 980 | devpriv->dma_buffer_addr[devpriv->current_buffer]); |
2696fb57 | 981 | /* set appropriate size of transfer */ |
e64374f8 DS |
982 | devpriv->dma_transfer_size = das16_suggest_transfer_size(dev, *cmd); |
983 | set_dma_count(devpriv->dma_chan, devpriv->dma_transfer_size); | |
984 | enable_dma(devpriv->dma_chan); | |
985 | release_dma_lock(flags); | |
986 | ||
2696fb57 | 987 | /* set up interrupt */ |
e64374f8 DS |
988 | if (devpriv->timer_mode) { |
989 | devpriv->timer_running = 1; | |
990 | devpriv->timer.expires = jiffies + timer_period(); | |
991 | add_timer(&devpriv->timer); | |
992 | devpriv->control_state &= ~DAS16_INTE; | |
993 | } else { | |
994 | /* clear interrupt bit */ | |
995 | outb(0x00, dev->iobase + DAS16_STATUS); | |
996 | /* enable interrupts */ | |
997 | devpriv->control_state |= DAS16_INTE; | |
998 | } | |
999 | devpriv->control_state |= DMA_ENABLE; | |
1000 | devpriv->control_state &= ~PACING_MASK; | |
1001 | if (cmd->convert_src == TRIG_EXT) | |
1002 | devpriv->control_state |= EXT_PACER; | |
1003 | else | |
1004 | devpriv->control_state |= INT_PACER; | |
1005 | outb(devpriv->control_state, dev->iobase + DAS16_CONTROL); | |
1006 | ||
1007 | /* Enable conversions if using das1600 mode */ | |
1008 | if (thisboard->size > 0x400) { | |
1009 | outb(0, dev->iobase + DAS1600_CONV); | |
1010 | } | |
1011 | ||
1012 | return 0; | |
1013 | } | |
1014 | ||
da91b269 | 1015 | static int das16_cancel(struct comedi_device *dev, struct comedi_subdevice *s) |
e64374f8 DS |
1016 | { |
1017 | unsigned long flags; | |
1018 | ||
5f74ea14 | 1019 | spin_lock_irqsave(&dev->spinlock, flags); |
e64374f8 DS |
1020 | /* disable interrupts, dma and pacer clocked conversions */ |
1021 | devpriv->control_state &= ~DAS16_INTE & ~PACING_MASK & ~DMA_ENABLE; | |
1022 | outb(devpriv->control_state, dev->iobase + DAS16_CONTROL); | |
1023 | if (devpriv->dma_chan) | |
1024 | disable_dma(devpriv->dma_chan); | |
1025 | ||
2696fb57 | 1026 | /* disable SW timer */ |
e64374f8 DS |
1027 | if (devpriv->timer_mode && devpriv->timer_running) { |
1028 | devpriv->timer_running = 0; | |
1029 | del_timer(&devpriv->timer); | |
1030 | } | |
1031 | ||
1032 | /* disable burst mode */ | |
1033 | if (thisboard->size > 0x400) { | |
1034 | outb(0, dev->iobase + DAS1600_BURST); | |
1035 | } | |
1036 | ||
5f74ea14 | 1037 | spin_unlock_irqrestore(&dev->spinlock, flags); |
e64374f8 DS |
1038 | |
1039 | return 0; | |
1040 | } | |
1041 | ||
da91b269 | 1042 | static void das16_reset(struct comedi_device *dev) |
e64374f8 DS |
1043 | { |
1044 | outb(0, dev->iobase + DAS16_STATUS); | |
1045 | outb(0, dev->iobase + DAS16_CONTROL); | |
1046 | outb(0, dev->iobase + DAS16_PACER); | |
1047 | outb(0, dev->iobase + DAS16_CNTR_CONTROL); | |
1048 | } | |
1049 | ||
da91b269 | 1050 | static int das16_ai_rinsn(struct comedi_device *dev, struct comedi_subdevice *s, |
0a85b6f0 | 1051 | struct comedi_insn *insn, unsigned int *data) |
e64374f8 DS |
1052 | { |
1053 | int i, n; | |
1054 | int range; | |
1055 | int chan; | |
1056 | int msb, lsb; | |
1057 | ||
2696fb57 | 1058 | /* disable interrupts and pacing */ |
e64374f8 DS |
1059 | devpriv->control_state &= ~DAS16_INTE & ~DMA_ENABLE & ~PACING_MASK; |
1060 | outb(devpriv->control_state, dev->iobase + DAS16_CONTROL); | |
1061 | ||
1062 | /* set multiplexer */ | |
1063 | chan = CR_CHAN(insn->chanspec); | |
1064 | chan |= CR_CHAN(insn->chanspec) << 4; | |
1065 | outb(chan, dev->iobase + DAS16_MUX); | |
1066 | ||
1067 | /* set gain */ | |
1068 | if (thisboard->ai_pg != das16_pg_none) { | |
1069 | range = CR_RANGE(insn->chanspec); | |
1070 | outb((das16_gainlists[thisboard->ai_pg])[range], | |
0a85b6f0 | 1071 | dev->iobase + DAS16_GAIN); |
e64374f8 DS |
1072 | } |
1073 | ||
1074 | for (n = 0; n < insn->n; n++) { | |
1075 | /* trigger conversion */ | |
1076 | outb_p(0, dev->iobase + DAS16_TRIG); | |
1077 | ||
1078 | for (i = 0; i < DAS16_TIMEOUT; i++) { | |
1079 | if (!(inb(dev->iobase + DAS16_STATUS) & BUSY)) | |
1080 | break; | |
1081 | } | |
1082 | if (i == DAS16_TIMEOUT) { | |
5f74ea14 | 1083 | printk("das16: timeout\n"); |
e64374f8 DS |
1084 | return -ETIME; |
1085 | } | |
1086 | msb = inb(dev->iobase + DAS16_AI_MSB); | |
1087 | lsb = inb(dev->iobase + DAS16_AI_LSB); | |
1088 | if (thisboard->ai_nbits == 12) { | |
1089 | data[n] = ((lsb >> 4) & 0xf) | (msb << 4); | |
1090 | } else { | |
1091 | data[n] = lsb | (msb << 8); | |
1092 | } | |
1093 | } | |
1094 | ||
1095 | return n; | |
1096 | } | |
1097 | ||
da91b269 | 1098 | static int das16_di_rbits(struct comedi_device *dev, struct comedi_subdevice *s, |
0a85b6f0 | 1099 | struct comedi_insn *insn, unsigned int *data) |
e64374f8 | 1100 | { |
790c5541 | 1101 | unsigned int bits; |
e64374f8 DS |
1102 | |
1103 | bits = inb(dev->iobase + DAS16_DIO) & 0xf; | |
1104 | data[1] = bits; | |
1105 | data[0] = 0; | |
1106 | ||
1107 | return 2; | |
1108 | } | |
1109 | ||
da91b269 | 1110 | static int das16_do_wbits(struct comedi_device *dev, struct comedi_subdevice *s, |
0a85b6f0 | 1111 | struct comedi_insn *insn, unsigned int *data) |
e64374f8 | 1112 | { |
790c5541 | 1113 | unsigned int wbits; |
e64374f8 | 1114 | |
2696fb57 | 1115 | /* only set bits that have been masked */ |
e64374f8 DS |
1116 | data[0] &= 0xf; |
1117 | wbits = s->state; | |
2696fb57 | 1118 | /* zero bits that have been masked */ |
e64374f8 | 1119 | wbits &= ~data[0]; |
2696fb57 | 1120 | /* set masked bits */ |
e64374f8 DS |
1121 | wbits |= data[0] & data[1]; |
1122 | s->state = wbits; | |
1123 | data[1] = wbits; | |
1124 | ||
1125 | outb(s->state, dev->iobase + DAS16_DIO); | |
1126 | ||
1127 | return 2; | |
1128 | } | |
1129 | ||
da91b269 | 1130 | static int das16_ao_winsn(struct comedi_device *dev, struct comedi_subdevice *s, |
0a85b6f0 | 1131 | struct comedi_insn *insn, unsigned int *data) |
e64374f8 DS |
1132 | { |
1133 | int i; | |
1134 | int lsb, msb; | |
1135 | int chan; | |
1136 | ||
1137 | chan = CR_CHAN(insn->chanspec); | |
1138 | ||
1139 | for (i = 0; i < insn->n; i++) { | |
1140 | if (thisboard->ao_nbits == 12) { | |
1141 | lsb = (data[i] << 4) & 0xff; | |
1142 | msb = (data[i] >> 4) & 0xff; | |
1143 | } else { | |
1144 | lsb = data[i] & 0xff; | |
1145 | msb = (data[i] >> 8) & 0xff; | |
1146 | } | |
1147 | outb(lsb, dev->iobase + DAS16_AO_LSB(chan)); | |
1148 | outb(msb, dev->iobase + DAS16_AO_MSB(chan)); | |
1149 | } | |
1150 | ||
1151 | return i; | |
1152 | } | |
1153 | ||
70265d24 | 1154 | static irqreturn_t das16_dma_interrupt(int irq, void *d) |
e64374f8 DS |
1155 | { |
1156 | int status; | |
71b5f4f1 | 1157 | struct comedi_device *dev = d; |
e64374f8 DS |
1158 | |
1159 | status = inb(dev->iobase + DAS16_STATUS); | |
1160 | ||
1161 | if ((status & DAS16_INT) == 0) { | |
1162 | DEBUG_PRINT("spurious interrupt\n"); | |
1163 | return IRQ_NONE; | |
1164 | } | |
1165 | ||
1166 | /* clear interrupt */ | |
1167 | outb(0x00, dev->iobase + DAS16_STATUS); | |
1168 | das16_interrupt(dev); | |
1169 | return IRQ_HANDLED; | |
1170 | } | |
1171 | ||
1172 | static void das16_timer_interrupt(unsigned long arg) | |
1173 | { | |
0a85b6f0 | 1174 | struct comedi_device *dev = (struct comedi_device *)arg; |
e64374f8 DS |
1175 | |
1176 | das16_interrupt(dev); | |
1177 | ||
1178 | if (devpriv->timer_running) | |
1179 | mod_timer(&devpriv->timer, jiffies + timer_period()); | |
1180 | } | |
1181 | ||
1182 | /* the pc104-das16jr (at least) has problems if the dma | |
1183 | transfer is interrupted in the middle of transferring | |
1184 | a 16 bit sample, so this function takes care to get | |
1185 | an even transfer count after disabling dma | |
1186 | channel. | |
1187 | */ | |
da91b269 | 1188 | static int disable_dma_on_even(struct comedi_device *dev) |
e64374f8 DS |
1189 | { |
1190 | int residue; | |
1191 | int i; | |
1192 | static const int disable_limit = 100; | |
1193 | static const int enable_timeout = 100; | |
1194 | disable_dma(devpriv->dma_chan); | |
1195 | residue = get_dma_residue(devpriv->dma_chan); | |
1196 | for (i = 0; i < disable_limit && (residue % 2); ++i) { | |
1197 | int j; | |
1198 | enable_dma(devpriv->dma_chan); | |
1199 | for (j = 0; j < enable_timeout; ++j) { | |
1200 | int new_residue; | |
5f74ea14 | 1201 | udelay(2); |
e64374f8 DS |
1202 | new_residue = get_dma_residue(devpriv->dma_chan); |
1203 | if (new_residue != residue) | |
1204 | break; | |
1205 | } | |
1206 | disable_dma(devpriv->dma_chan); | |
1207 | residue = get_dma_residue(devpriv->dma_chan); | |
1208 | } | |
1209 | if (i == disable_limit) { | |
1210 | comedi_error(dev, | |
0a85b6f0 | 1211 | "failed to get an even dma transfer, could be trouble."); |
e64374f8 DS |
1212 | } |
1213 | return residue; | |
1214 | } | |
1215 | ||
da91b269 | 1216 | static void das16_interrupt(struct comedi_device *dev) |
e64374f8 DS |
1217 | { |
1218 | unsigned long dma_flags, spin_flags; | |
34c43922 | 1219 | struct comedi_subdevice *s = dev->read_subdev; |
d163679c | 1220 | struct comedi_async *async; |
ea6d0d4c | 1221 | struct comedi_cmd *cmd; |
e64374f8 DS |
1222 | int num_bytes, residue; |
1223 | int buffer_index; | |
1224 | ||
1225 | if (dev->attached == 0) { | |
1226 | comedi_error(dev, "premature interrupt"); | |
1227 | return; | |
1228 | } | |
2696fb57 | 1229 | /* initialize async here to make sure it is not NULL */ |
e64374f8 DS |
1230 | async = s->async; |
1231 | cmd = &async->cmd; | |
1232 | ||
1233 | if (devpriv->dma_chan == 0) { | |
1234 | comedi_error(dev, "interrupt with no dma channel?"); | |
1235 | return; | |
1236 | } | |
1237 | ||
5f74ea14 | 1238 | spin_lock_irqsave(&dev->spinlock, spin_flags); |
e64374f8 | 1239 | if ((devpriv->control_state & DMA_ENABLE) == 0) { |
5f74ea14 | 1240 | spin_unlock_irqrestore(&dev->spinlock, spin_flags); |
e64374f8 DS |
1241 | DEBUG_PRINT("interrupt while dma disabled?\n"); |
1242 | return; | |
1243 | } | |
1244 | ||
1245 | dma_flags = claim_dma_lock(); | |
1246 | clear_dma_ff(devpriv->dma_chan); | |
1247 | residue = disable_dma_on_even(dev); | |
1248 | ||
2696fb57 | 1249 | /* figure out how many points to read */ |
e64374f8 DS |
1250 | if (residue > devpriv->dma_transfer_size) { |
1251 | comedi_error(dev, "residue > transfer size!\n"); | |
1252 | async->events |= COMEDI_CB_ERROR | COMEDI_CB_EOA; | |
1253 | num_bytes = 0; | |
1254 | } else | |
1255 | num_bytes = devpriv->dma_transfer_size - residue; | |
1256 | ||
1257 | if (cmd->stop_src == TRIG_COUNT && num_bytes >= devpriv->adc_byte_count) { | |
1258 | num_bytes = devpriv->adc_byte_count; | |
1259 | async->events |= COMEDI_CB_EOA; | |
1260 | } | |
1261 | ||
1262 | buffer_index = devpriv->current_buffer; | |
1263 | devpriv->current_buffer = (devpriv->current_buffer + 1) % 2; | |
1264 | devpriv->adc_byte_count -= num_bytes; | |
1265 | ||
2696fb57 | 1266 | /* figure out how many bytes for next transfer */ |
e64374f8 | 1267 | if (cmd->stop_src == TRIG_COUNT && devpriv->timer_mode == 0 && |
0a85b6f0 | 1268 | devpriv->dma_transfer_size > devpriv->adc_byte_count) |
e64374f8 DS |
1269 | devpriv->dma_transfer_size = devpriv->adc_byte_count; |
1270 | ||
2696fb57 | 1271 | /* re-enable dma */ |
e64374f8 DS |
1272 | if ((async->events & COMEDI_CB_EOA) == 0) { |
1273 | set_dma_addr(devpriv->dma_chan, | |
0a85b6f0 | 1274 | devpriv->dma_buffer_addr[devpriv->current_buffer]); |
e64374f8 DS |
1275 | set_dma_count(devpriv->dma_chan, devpriv->dma_transfer_size); |
1276 | enable_dma(devpriv->dma_chan); | |
1277 | /* reenable conversions for das1600 mode, (stupid hardware) */ | |
1278 | if (thisboard->size > 0x400 && devpriv->timer_mode == 0) { | |
1279 | outb(0x00, dev->iobase + DAS1600_CONV); | |
1280 | } | |
1281 | } | |
1282 | release_dma_lock(dma_flags); | |
1283 | ||
5f74ea14 | 1284 | spin_unlock_irqrestore(&dev->spinlock, spin_flags); |
e64374f8 DS |
1285 | |
1286 | cfc_write_array_to_buffer(s, | |
0a85b6f0 | 1287 | devpriv->dma_buffer[buffer_index], num_bytes); |
e64374f8 DS |
1288 | |
1289 | cfc_handle_events(dev, s); | |
1290 | } | |
1291 | ||
da91b269 | 1292 | static unsigned int das16_set_pacer(struct comedi_device *dev, unsigned int ns, |
0a85b6f0 | 1293 | int rounding_flags) |
e64374f8 DS |
1294 | { |
1295 | i8253_cascade_ns_to_timer_2div(devpriv->clockbase, &(devpriv->divisor1), | |
0a85b6f0 MT |
1296 | &(devpriv->divisor2), &ns, |
1297 | rounding_flags & TRIG_ROUND_MASK); | |
e64374f8 DS |
1298 | |
1299 | /* Write the values of ctr1 and ctr2 into counters 1 and 2 */ | |
1300 | i8254_load(dev->iobase + DAS16_CNTR0_DATA, 0, 1, devpriv->divisor1, 2); | |
1301 | i8254_load(dev->iobase + DAS16_CNTR0_DATA, 0, 2, devpriv->divisor2, 2); | |
1302 | ||
1303 | return ns; | |
1304 | } | |
1305 | ||
da91b269 | 1306 | static void reg_dump(struct comedi_device *dev) |
e64374f8 DS |
1307 | { |
1308 | DEBUG_PRINT("********DAS1600 REGISTER DUMP********\n"); | |
1309 | DEBUG_PRINT("DAS16_MUX: %x\n", inb(dev->iobase + DAS16_MUX)); | |
1310 | DEBUG_PRINT("DAS16_DIO: %x\n", inb(dev->iobase + DAS16_DIO)); | |
1311 | DEBUG_PRINT("DAS16_STATUS: %x\n", inb(dev->iobase + DAS16_STATUS)); | |
1312 | DEBUG_PRINT("DAS16_CONTROL: %x\n", inb(dev->iobase + DAS16_CONTROL)); | |
1313 | DEBUG_PRINT("DAS16_PACER: %x\n", inb(dev->iobase + DAS16_PACER)); | |
1314 | DEBUG_PRINT("DAS16_GAIN: %x\n", inb(dev->iobase + DAS16_GAIN)); | |
1315 | DEBUG_PRINT("DAS16_CNTR_CONTROL: %x\n", | |
0a85b6f0 | 1316 | inb(dev->iobase + DAS16_CNTR_CONTROL)); |
e64374f8 DS |
1317 | DEBUG_PRINT("DAS1600_CONV: %x\n", inb(dev->iobase + DAS1600_CONV)); |
1318 | DEBUG_PRINT("DAS1600_BURST: %x\n", inb(dev->iobase + DAS1600_BURST)); | |
1319 | DEBUG_PRINT("DAS1600_ENABLE: %x\n", inb(dev->iobase + DAS1600_ENABLE)); | |
1320 | DEBUG_PRINT("DAS1600_STATUS_B: %x\n", | |
0a85b6f0 | 1321 | inb(dev->iobase + DAS1600_STATUS_B)); |
e64374f8 DS |
1322 | } |
1323 | ||
da91b269 | 1324 | static int das16_probe(struct comedi_device *dev, struct comedi_devconfig *it) |
e64374f8 DS |
1325 | { |
1326 | int status; | |
1327 | int diobits; | |
1328 | ||
1329 | /* status is available on all boards */ | |
1330 | ||
1331 | status = inb(dev->iobase + DAS16_STATUS); | |
1332 | ||
1333 | if ((status & UNIPOLAR)) { | |
1334 | devpriv->ai_unipolar = 1; | |
1335 | } else { | |
1336 | devpriv->ai_unipolar = 0; | |
1337 | } | |
1338 | ||
1339 | if ((status & DAS16_MUXBIT)) { | |
1340 | devpriv->ai_singleended = 1; | |
1341 | } else { | |
1342 | devpriv->ai_singleended = 0; | |
1343 | } | |
1344 | ||
1345 | /* diobits indicates boards */ | |
1346 | ||
1347 | diobits = inb(dev->iobase + DAS16_DIO) & 0xf0; | |
1348 | ||
1349 | printk(" id bits are 0x%02x\n", diobits); | |
1350 | if (thisboard->id != diobits) { | |
1351 | printk(" requested board's id bits are 0x%x (ignore)\n", | |
0a85b6f0 | 1352 | thisboard->id); |
e64374f8 DS |
1353 | } |
1354 | ||
1355 | return 0; | |
1356 | } | |
1357 | ||
da91b269 | 1358 | static int das1600_mode_detect(struct comedi_device *dev) |
e64374f8 DS |
1359 | { |
1360 | int status = 0; | |
1361 | ||
1362 | status = inb(dev->iobase + DAS1600_STATUS_B); | |
1363 | ||
1364 | if (status & DAS1600_CLK_10MHZ) { | |
1365 | devpriv->clockbase = 100; | |
1366 | printk(" 10MHz pacer clock\n"); | |
1367 | } else { | |
1368 | devpriv->clockbase = 1000; | |
1369 | printk(" 1MHz pacer clock\n"); | |
1370 | } | |
1371 | ||
1372 | reg_dump(dev); | |
1373 | ||
1374 | return 0; | |
1375 | } | |
1376 | ||
1377 | /* | |
1378 | * | |
1379 | * Options list: | |
1380 | * 0 I/O base | |
1381 | * 1 IRQ | |
1382 | * 2 DMA | |
1383 | * 3 Clock speed (in MHz) | |
1384 | */ | |
1385 | ||
da91b269 | 1386 | static int das16_attach(struct comedi_device *dev, struct comedi_devconfig *it) |
e64374f8 | 1387 | { |
34c43922 | 1388 | struct comedi_subdevice *s; |
e64374f8 DS |
1389 | int ret; |
1390 | unsigned int irq; | |
1391 | unsigned long iobase; | |
1392 | unsigned int dma_chan; | |
1393 | int timer_mode; | |
1394 | unsigned long flags; | |
1f6325d6 | 1395 | struct comedi_krange *user_ai_range, *user_ao_range; |
e64374f8 DS |
1396 | |
1397 | iobase = it->options[0]; | |
1398 | #if 0 | |
1399 | irq = it->options[1]; | |
1400 | timer_mode = it->options[8]; | |
1401 | #endif | |
1402 | /* always use time_mode since using irq can drop samples while | |
1403 | * waiting for dma done interrupt (due to hardware limitations) */ | |
1404 | irq = 0; | |
1405 | timer_mode = 1; | |
1406 | if (timer_mode) | |
1407 | irq = 0; | |
1408 | ||
1409 | printk("comedi%d: das16:", dev->minor); | |
1410 | ||
2696fb57 | 1411 | /* check that clock setting is valid */ |
e64374f8 DS |
1412 | if (it->options[3]) { |
1413 | if (it->options[3] != 0 && | |
0a85b6f0 MT |
1414 | it->options[3] != 1 && it->options[3] != 10) { |
1415 | printk | |
1416 | ("\n Invalid option. Master clock must be set to 1 or 10 (MHz)\n"); | |
e64374f8 DS |
1417 | return -EINVAL; |
1418 | } | |
1419 | } | |
1420 | ||
c3744138 BP |
1421 | ret = alloc_private(dev, sizeof(struct das16_private_struct)); |
1422 | if (ret < 0) | |
e64374f8 DS |
1423 | return ret; |
1424 | ||
1425 | if (thisboard->size < 0x400) { | |
1426 | printk(" 0x%04lx-0x%04lx\n", iobase, iobase + thisboard->size); | |
1427 | if (!request_region(iobase, thisboard->size, "das16")) { | |
1428 | printk(" I/O port conflict\n"); | |
1429 | return -EIO; | |
1430 | } | |
1431 | } else { | |
1432 | printk(" 0x%04lx-0x%04lx 0x%04lx-0x%04lx\n", | |
0a85b6f0 MT |
1433 | iobase, iobase + 0x0f, |
1434 | iobase + 0x400, | |
1435 | iobase + 0x400 + (thisboard->size & 0x3ff)); | |
e64374f8 DS |
1436 | if (!request_region(iobase, 0x10, "das16")) { |
1437 | printk(" I/O port conflict: 0x%04lx-0x%04lx\n", | |
0a85b6f0 | 1438 | iobase, iobase + 0x0f); |
e64374f8 DS |
1439 | return -EIO; |
1440 | } | |
1441 | if (!request_region(iobase + 0x400, thisboard->size & 0x3ff, | |
0a85b6f0 | 1442 | "das16")) { |
e64374f8 DS |
1443 | release_region(iobase, 0x10); |
1444 | printk(" I/O port conflict: 0x%04lx-0x%04lx\n", | |
0a85b6f0 MT |
1445 | iobase + 0x400, |
1446 | iobase + 0x400 + (thisboard->size & 0x3ff)); | |
e64374f8 DS |
1447 | return -EIO; |
1448 | } | |
1449 | } | |
1450 | ||
1451 | dev->iobase = iobase; | |
1452 | ||
2696fb57 | 1453 | /* probe id bits to make sure they are consistent */ |
e64374f8 DS |
1454 | if (das16_probe(dev, it)) { |
1455 | printk(" id bits do not match selected board, aborting\n"); | |
1456 | return -EINVAL; | |
1457 | } | |
1458 | dev->board_name = thisboard->name; | |
1459 | ||
2696fb57 | 1460 | /* get master clock speed */ |
e64374f8 DS |
1461 | if (thisboard->size < 0x400) { |
1462 | if (it->options[3]) | |
1463 | devpriv->clockbase = 1000 / it->options[3]; | |
1464 | else | |
2696fb57 | 1465 | devpriv->clockbase = 1000; /* 1 MHz default */ |
e64374f8 DS |
1466 | } else { |
1467 | das1600_mode_detect(dev); | |
1468 | } | |
1469 | ||
1470 | /* now for the irq */ | |
1471 | if (irq > 1 && irq < 8) { | |
5f74ea14 | 1472 | ret = request_irq(irq, das16_dma_interrupt, 0, "das16", dev); |
c3744138 BP |
1473 | |
1474 | if (ret < 0) | |
e64374f8 DS |
1475 | return ret; |
1476 | dev->irq = irq; | |
1477 | printk(" ( irq = %u )", irq); | |
1478 | } else if (irq == 0) { | |
1479 | printk(" ( no irq )"); | |
1480 | } else { | |
1481 | printk(" invalid irq\n"); | |
1482 | return -EINVAL; | |
1483 | } | |
1484 | ||
2696fb57 | 1485 | /* initialize dma */ |
e64374f8 DS |
1486 | dma_chan = it->options[2]; |
1487 | if (dma_chan == 1 || dma_chan == 3) { | |
2696fb57 | 1488 | /* allocate dma buffers */ |
e64374f8 DS |
1489 | int i; |
1490 | for (i = 0; i < 2; i++) { | |
1491 | devpriv->dma_buffer[i] = pci_alloc_consistent(NULL, | |
0a85b6f0 MT |
1492 | DAS16_DMA_SIZE, |
1493 | &devpriv-> | |
1494 | dma_buffer_addr | |
1495 | [i]); | |
e64374f8 DS |
1496 | if (devpriv->dma_buffer[i] == NULL) |
1497 | return -ENOMEM; | |
1498 | } | |
1499 | if (request_dma(dma_chan, "das16")) { | |
1500 | printk(" failed to allocate dma channel %i\n", | |
0a85b6f0 | 1501 | dma_chan); |
e64374f8 DS |
1502 | return -EINVAL; |
1503 | } | |
1504 | devpriv->dma_chan = dma_chan; | |
1505 | flags = claim_dma_lock(); | |
1506 | disable_dma(devpriv->dma_chan); | |
1507 | set_dma_mode(devpriv->dma_chan, DMA_MODE_READ); | |
1508 | release_dma_lock(flags); | |
1509 | printk(" ( dma = %u)\n", dma_chan); | |
1510 | } else if (dma_chan == 0) { | |
1511 | printk(" ( no dma )\n"); | |
1512 | } else { | |
1513 | printk(" invalid dma channel\n"); | |
1514 | return -EINVAL; | |
1515 | } | |
1516 | ||
2696fb57 | 1517 | /* get any user-defined input range */ |
e64374f8 | 1518 | if (thisboard->ai_pg == das16_pg_none && |
0a85b6f0 | 1519 | (it->options[4] || it->options[5])) { |
2696fb57 | 1520 | /* allocate single-range range table */ |
e64374f8 | 1521 | devpriv->user_ai_range_table = |
0a85b6f0 MT |
1522 | kmalloc(sizeof(struct comedi_lrange) + |
1523 | sizeof(struct comedi_krange), GFP_KERNEL); | |
2696fb57 | 1524 | /* initialize ai range */ |
e64374f8 DS |
1525 | devpriv->user_ai_range_table->length = 1; |
1526 | user_ai_range = devpriv->user_ai_range_table->range; | |
1527 | user_ai_range->min = it->options[4]; | |
1528 | user_ai_range->max = it->options[5]; | |
1529 | user_ai_range->flags = UNIT_volt; | |
1530 | } | |
2696fb57 | 1531 | /* get any user-defined output range */ |
e64374f8 | 1532 | if (it->options[6] || it->options[7]) { |
2696fb57 | 1533 | /* allocate single-range range table */ |
e64374f8 | 1534 | devpriv->user_ao_range_table = |
0a85b6f0 MT |
1535 | kmalloc(sizeof(struct comedi_lrange) + |
1536 | sizeof(struct comedi_krange), GFP_KERNEL); | |
2696fb57 | 1537 | /* initialize ao range */ |
e64374f8 DS |
1538 | devpriv->user_ao_range_table->length = 1; |
1539 | user_ao_range = devpriv->user_ao_range_table->range; | |
1540 | user_ao_range->min = it->options[6]; | |
1541 | user_ao_range->max = it->options[7]; | |
1542 | user_ao_range->flags = UNIT_volt; | |
1543 | } | |
1544 | ||
1545 | if (timer_mode) { | |
1546 | init_timer(&(devpriv->timer)); | |
1547 | devpriv->timer.function = das16_timer_interrupt; | |
1548 | devpriv->timer.data = (unsigned long)dev; | |
1549 | } | |
1550 | devpriv->timer_mode = timer_mode ? 1 : 0; | |
1551 | ||
c3744138 BP |
1552 | ret = alloc_subdevices(dev, 5); |
1553 | if (ret < 0) | |
e64374f8 DS |
1554 | return ret; |
1555 | ||
1556 | s = dev->subdevices + 0; | |
1557 | dev->read_subdev = s; | |
1558 | /* ai */ | |
1559 | if (thisboard->ai) { | |
1560 | s->type = COMEDI_SUBD_AI; | |
1561 | s->subdev_flags = SDF_READABLE | SDF_CMD_READ; | |
1562 | if (devpriv->ai_singleended) { | |
1563 | s->n_chan = 16; | |
1564 | s->len_chanlist = 16; | |
1565 | s->subdev_flags |= SDF_GROUND; | |
1566 | } else { | |
1567 | s->n_chan = 8; | |
1568 | s->len_chanlist = 8; | |
1569 | s->subdev_flags |= SDF_DIFF; | |
1570 | } | |
1571 | s->maxdata = (1 << thisboard->ai_nbits) - 1; | |
2696fb57 | 1572 | if (devpriv->user_ai_range_table) { /* user defined ai range */ |
e64374f8 DS |
1573 | s->range_table = devpriv->user_ai_range_table; |
1574 | } else if (devpriv->ai_unipolar) { | |
1575 | s->range_table = das16_ai_uni_lranges[thisboard->ai_pg]; | |
1576 | } else { | |
1577 | s->range_table = das16_ai_bip_lranges[thisboard->ai_pg]; | |
1578 | } | |
1579 | s->insn_read = thisboard->ai; | |
1580 | s->do_cmdtest = das16_cmd_test; | |
1581 | s->do_cmd = das16_cmd_exec; | |
1582 | s->cancel = das16_cancel; | |
1583 | s->munge = das16_ai_munge; | |
1584 | } else { | |
1585 | s->type = COMEDI_SUBD_UNUSED; | |
1586 | } | |
1587 | ||
1588 | s = dev->subdevices + 1; | |
1589 | /* ao */ | |
1590 | if (thisboard->ao) { | |
1591 | s->type = COMEDI_SUBD_AO; | |
1592 | s->subdev_flags = SDF_WRITABLE; | |
1593 | s->n_chan = 2; | |
1594 | s->maxdata = (1 << thisboard->ao_nbits) - 1; | |
2696fb57 | 1595 | if (devpriv->user_ao_range_table) { /* user defined ao range */ |
e64374f8 DS |
1596 | s->range_table = devpriv->user_ao_range_table; |
1597 | } else { | |
1598 | s->range_table = &range_unknown; | |
1599 | } | |
1600 | s->insn_write = thisboard->ao; | |
1601 | } else { | |
1602 | s->type = COMEDI_SUBD_UNUSED; | |
1603 | } | |
1604 | ||
1605 | s = dev->subdevices + 2; | |
1606 | /* di */ | |
1607 | if (thisboard->di) { | |
1608 | s->type = COMEDI_SUBD_DI; | |
1609 | s->subdev_flags = SDF_READABLE; | |
1610 | s->n_chan = 4; | |
1611 | s->maxdata = 1; | |
1612 | s->range_table = &range_digital; | |
1613 | s->insn_bits = thisboard->di; | |
1614 | } else { | |
1615 | s->type = COMEDI_SUBD_UNUSED; | |
1616 | } | |
1617 | ||
1618 | s = dev->subdevices + 3; | |
1619 | /* do */ | |
1620 | if (thisboard->do_) { | |
1621 | s->type = COMEDI_SUBD_DO; | |
1622 | s->subdev_flags = SDF_WRITABLE | SDF_READABLE; | |
1623 | s->n_chan = 4; | |
1624 | s->maxdata = 1; | |
1625 | s->range_table = &range_digital; | |
1626 | s->insn_bits = thisboard->do_; | |
2696fb57 | 1627 | /* initialize digital output lines */ |
e64374f8 DS |
1628 | outb(s->state, dev->iobase + DAS16_DIO); |
1629 | } else { | |
1630 | s->type = COMEDI_SUBD_UNUSED; | |
1631 | } | |
1632 | ||
1633 | s = dev->subdevices + 4; | |
1634 | /* 8255 */ | |
1635 | if (thisboard->i8255_offset != 0) { | |
1636 | subdev_8255_init(dev, s, NULL, (dev->iobase + | |
0a85b6f0 | 1637 | thisboard->i8255_offset)); |
e64374f8 DS |
1638 | } else { |
1639 | s->type = COMEDI_SUBD_UNUSED; | |
1640 | } | |
1641 | ||
1642 | das16_reset(dev); | |
1643 | /* set the interrupt level */ | |
1644 | devpriv->control_state = DAS16_IRQ(dev->irq); | |
1645 | outb(devpriv->control_state, dev->iobase + DAS16_CONTROL); | |
1646 | ||
2696fb57 | 1647 | /* turn on das1600 mode if available */ |
e64374f8 DS |
1648 | if (thisboard->size > 0x400) { |
1649 | outb(DAS1600_ENABLE_VAL, dev->iobase + DAS1600_ENABLE); | |
1650 | outb(0, dev->iobase + DAS1600_CONV); | |
1651 | outb(0, dev->iobase + DAS1600_BURST); | |
1652 | } | |
1653 | ||
1654 | return 0; | |
1655 | } | |
1656 | ||
da91b269 | 1657 | static int das16_detach(struct comedi_device *dev) |
e64374f8 DS |
1658 | { |
1659 | printk("comedi%d: das16: remove\n", dev->minor); | |
1660 | ||
1661 | das16_reset(dev); | |
1662 | ||
1663 | if (dev->subdevices) | |
1664 | subdev_8255_cleanup(dev, dev->subdevices + 4); | |
1665 | ||
1666 | if (devpriv) { | |
1667 | int i; | |
1668 | for (i = 0; i < 2; i++) { | |
1669 | if (devpriv->dma_buffer[i]) | |
1670 | pci_free_consistent(NULL, DAS16_DMA_SIZE, | |
0a85b6f0 MT |
1671 | devpriv->dma_buffer[i], |
1672 | devpriv-> | |
1673 | dma_buffer_addr[i]); | |
e64374f8 DS |
1674 | } |
1675 | if (devpriv->dma_chan) | |
1676 | free_dma(devpriv->dma_chan); | |
1677 | if (devpriv->user_ai_range_table) | |
1678 | kfree(devpriv->user_ai_range_table); | |
1679 | if (devpriv->user_ao_range_table) | |
1680 | kfree(devpriv->user_ao_range_table); | |
1681 | } | |
1682 | ||
1683 | if (dev->irq) | |
5f74ea14 | 1684 | free_irq(dev->irq, dev); |
e64374f8 DS |
1685 | |
1686 | if (dev->iobase) { | |
1687 | if (thisboard->size < 0x400) { | |
1688 | release_region(dev->iobase, thisboard->size); | |
1689 | } else { | |
1690 | release_region(dev->iobase, 0x10); | |
1691 | release_region(dev->iobase + 0x400, | |
0a85b6f0 | 1692 | thisboard->size & 0x3ff); |
e64374f8 DS |
1693 | } |
1694 | } | |
1695 | ||
1696 | return 0; | |
1697 | } | |
1698 | ||
1699 | COMEDI_INITCLEANUP(driver_das16); | |
1700 | ||
2696fb57 | 1701 | /* utility function that suggests a dma transfer size in bytes */ |
da91b269 | 1702 | static unsigned int das16_suggest_transfer_size(struct comedi_device *dev, |
0a85b6f0 | 1703 | struct comedi_cmd cmd) |
e64374f8 DS |
1704 | { |
1705 | unsigned int size; | |
1706 | unsigned int freq; | |
1707 | ||
1708 | /* if we are using timer interrupt, we don't care how long it | |
1709 | * will take to complete transfer since it will be interrupted | |
1710 | * by timer interrupt */ | |
1711 | if (devpriv->timer_mode) | |
1712 | return DAS16_DMA_SIZE; | |
1713 | ||
1714 | /* otherwise, we are relying on dma terminal count interrupt, | |
1715 | * so pick a reasonable size */ | |
1716 | if (cmd.convert_src == TRIG_TIMER) | |
1717 | freq = 1000000000 / cmd.convert_arg; | |
1718 | else if (cmd.scan_begin_src == TRIG_TIMER) | |
1719 | freq = (1000000000 / cmd.scan_begin_arg) * cmd.chanlist_len; | |
2696fb57 | 1720 | /* return some default value */ |
e64374f8 DS |
1721 | else |
1722 | freq = 0xffffffff; | |
1723 | ||
1724 | if (cmd.flags & TRIG_WAKE_EOS) { | |
1725 | size = sample_size * cmd.chanlist_len; | |
1726 | } else { | |
2696fb57 | 1727 | /* make buffer fill in no more than 1/3 second */ |
e64374f8 DS |
1728 | size = (freq / 3) * sample_size; |
1729 | } | |
1730 | ||
2696fb57 | 1731 | /* set a minimum and maximum size allowed */ |
e64374f8 DS |
1732 | if (size > DAS16_DMA_SIZE) |
1733 | size = DAS16_DMA_SIZE - DAS16_DMA_SIZE % sample_size; | |
1734 | else if (size < sample_size) | |
1735 | size = sample_size; | |
1736 | ||
1737 | if (cmd.stop_src == TRIG_COUNT && size > devpriv->adc_byte_count) | |
1738 | size = devpriv->adc_byte_count; | |
1739 | ||
1740 | return size; | |
1741 | } | |
1742 | ||
0a85b6f0 MT |
1743 | static void das16_ai_munge(struct comedi_device *dev, |
1744 | struct comedi_subdevice *s, void *array, | |
1745 | unsigned int num_bytes, | |
1746 | unsigned int start_chan_index) | |
e64374f8 | 1747 | { |
790c5541 BP |
1748 | unsigned int i, num_samples = num_bytes / sizeof(short); |
1749 | short *data = array; | |
e64374f8 DS |
1750 | |
1751 | for (i = 0; i < num_samples; i++) { | |
1752 | data[i] = le16_to_cpu(data[i]); | |
1753 | if (thisboard->ai_nbits == 12) { | |
1754 | data[i] = (data[i] >> 4) & 0xfff; | |
1755 | } | |
1756 | } | |
1757 | } |