Commit | Line | Data |
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88b12a9a FMH |
1 | /* |
2 | comedi/drivers/cb_pcidas64.c | |
3 | This is a driver for the ComputerBoards/MeasurementComputing PCI-DAS | |
4 | 64xx, 60xx, and 4020 cards. | |
5 | ||
6 | Author: Frank Mori Hess <fmhess@users.sourceforge.net> | |
7 | Copyright (C) 2001, 2002 Frank Mori Hess | |
8 | ||
9 | Thanks also go to the following people: | |
10 | ||
11 | Steve Rosenbluth, for providing the source code for | |
12 | his pci-das6402 driver, and source code for working QNX pci-6402 | |
13 | drivers by Greg Laird and Mariusz Bogacz. None of the code was | |
14 | used directly here, but it was useful as an additional source of | |
15 | documentation on how to program the boards. | |
16 | ||
17 | John Sims, for much testing and feedback on pcidas-4020 support. | |
18 | ||
19 | COMEDI - Linux Control and Measurement Device Interface | |
20 | Copyright (C) 1997-8 David A. Schleef <ds@schleef.org> | |
21 | ||
22 | This program is free software; you can redistribute it and/or modify | |
23 | it under the terms of the GNU General Public License as published by | |
24 | the Free Software Foundation; either version 2 of the License, or | |
25 | (at your option) any later version. | |
26 | ||
27 | This program is distributed in the hope that it will be useful, | |
28 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
29 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
30 | GNU General Public License for more details. | |
31 | ||
32 | You should have received a copy of the GNU General Public License | |
33 | along with this program; if not, write to the Free Software | |
34 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
35 | ||
36 | ************************************************************************/ | |
37 | ||
38 | /* | |
39 | ||
40 | Driver: cb_pcidas64 | |
41 | Description: MeasurementComputing PCI-DAS64xx, 60XX, and 4020 series with the PLX 9080 PCI controller | |
42 | Author: Frank Mori Hess <fmhess@users.sourceforge.net> | |
43 | Status: works | |
44 | Updated: 2002-10-09 | |
45 | Devices: [Measurement Computing] PCI-DAS6402/16 (cb_pcidas64), | |
46 | PCI-DAS6402/12, PCI-DAS64/M1/16, PCI-DAS64/M2/16, | |
47 | PCI-DAS64/M3/16, PCI-DAS6402/16/JR, PCI-DAS64/M1/16/JR, | |
48 | PCI-DAS64/M2/16/JR, PCI-DAS64/M3/16/JR, PCI-DAS64/M1/14, | |
49 | PCI-DAS64/M2/14, PCI-DAS64/M3/14, PCI-DAS6013, PCI-DAS6014, | |
50 | PCI-DAS6023, PCI-DAS6025, PCI-DAS6030, | |
51 | PCI-DAS6031, PCI-DAS6032, PCI-DAS6033, PCI-DAS6034, | |
52 | PCI-DAS6035, PCI-DAS6036, PCI-DAS6040, PCI-DAS6052, | |
53 | PCI-DAS6070, PCI-DAS6071, PCI-DAS4020/12 | |
54 | ||
55 | Configuration options: | |
56 | [0] - PCI bus of device (optional) | |
57 | [1] - PCI slot of device (optional) | |
58 | ||
59 | These boards may be autocalibrated with the comedi_calibrate utility. | |
60 | ||
61 | To select the bnc trigger input on the 4020 (instead of the dio input), | |
62 | specify a nonzero channel in the chanspec. If you wish to use an external | |
63 | master clock on the 4020, you may do so by setting the scan_begin_src | |
64 | to TRIG_OTHER, and using an INSN_CONFIG_TIMER_1 configuration insn | |
65 | to configure the divisor to use for the external clock. | |
66 | ||
67 | Some devices are not identified because the PCI device IDs are not yet | |
68 | known. If you have such a board, please file a bug report at | |
69 | https://bugs.comedi.org. | |
70 | ||
71 | */ | |
72 | ||
73 | /* | |
74 | ||
75 | TODO: | |
76 | make it return error if user attempts an ai command that uses the | |
77 | external queue, and an ao command simultaneously | |
78 | user counter subdevice | |
79 | there are a number of boards this driver will support when they are | |
80 | fully released, but does not yet since the pci device id numbers | |
81 | are not yet available. | |
82 | support prescaled 100khz clock for slow pacing (not available on 6000 series?) | |
83 | make ao fifo size adjustable like ai fifo | |
84 | */ | |
85 | ||
86 | #include "../comedidev.h" | |
87 | #include <linux/delay.h> | |
70265d24 | 88 | #include <linux/interrupt.h> |
88b12a9a FMH |
89 | #include <asm/system.h> |
90 | ||
91 | #include "comedi_pci.h" | |
92 | #include "8253.h" | |
93 | #include "8255.h" | |
94 | #include "plx9080.h" | |
95 | #include "comedi_fc.h" | |
96 | ||
9ef4dea6 BP |
97 | #undef PCIDAS64_DEBUG /* disable debugging code */ |
98 | /* #define PCIDAS64_DEBUG enable debugging code */ | |
88b12a9a FMH |
99 | |
100 | #ifdef PCIDAS64_DEBUG | |
101 | #define DEBUG_PRINT(format, args...) rt_printk(format , ## args ) | |
102 | #else | |
103 | #define DEBUG_PRINT(format, args...) | |
104 | #endif | |
105 | ||
9ef4dea6 BP |
106 | #define TIMER_BASE 25 /* 40MHz master clock */ |
107 | #define PRESCALED_TIMER_BASE 10000 /* 100kHz 'prescaled' clock for slow aquisition, maybe I'll support this someday */ | |
88b12a9a FMH |
108 | #define DMA_BUFFER_SIZE 0x1000 |
109 | ||
110 | /* maximum value that can be loaded into board's 24-bit counters*/ | |
111 | static const int max_counter_value = 0xffffff; | |
112 | ||
113 | /* PCI-DAS64xxx base addresses */ | |
114 | ||
9ef4dea6 | 115 | /* indices of base address regions */ |
88b12a9a FMH |
116 | enum base_address_regions { |
117 | PLX9080_BADDRINDEX = 0, | |
118 | MAIN_BADDRINDEX = 2, | |
119 | DIO_COUNTER_BADDRINDEX = 3, | |
120 | }; | |
121 | ||
9ef4dea6 | 122 | /* priv(dev)->main_iobase registers */ |
88b12a9a | 123 | enum write_only_registers { |
9ef4dea6 BP |
124 | INTR_ENABLE_REG = 0x0, /* interrupt enable register */ |
125 | HW_CONFIG_REG = 0x2, /* hardware config register */ | |
88b12a9a FMH |
126 | DAQ_SYNC_REG = 0xc, |
127 | DAQ_ATRIG_LOW_4020_REG = 0xc, | |
9ef4dea6 BP |
128 | ADC_CONTROL0_REG = 0x10, /* adc control register 0 */ |
129 | ADC_CONTROL1_REG = 0x12, /* adc control register 1 */ | |
88b12a9a | 130 | CALIBRATION_REG = 0x14, |
9ef4dea6 BP |
131 | ADC_SAMPLE_INTERVAL_LOWER_REG = 0x16, /* lower 16 bits of adc sample interval counter */ |
132 | ADC_SAMPLE_INTERVAL_UPPER_REG = 0x18, /* upper 8 bits of adc sample interval counter */ | |
133 | ADC_DELAY_INTERVAL_LOWER_REG = 0x1a, /* lower 16 bits of delay interval counter */ | |
134 | ADC_DELAY_INTERVAL_UPPER_REG = 0x1c, /* upper 8 bits of delay interval counter */ | |
135 | ADC_COUNT_LOWER_REG = 0x1e, /* lower 16 bits of hardware conversion/scan counter */ | |
136 | ADC_COUNT_UPPER_REG = 0x20, /* upper 8 bits of hardware conversion/scan counter */ | |
137 | ADC_START_REG = 0x22, /* software trigger to start aquisition */ | |
138 | ADC_CONVERT_REG = 0x24, /* initiates single conversion */ | |
139 | ADC_QUEUE_CLEAR_REG = 0x26, /* clears adc queue */ | |
140 | ADC_QUEUE_LOAD_REG = 0x28, /* loads adc queue */ | |
88b12a9a | 141 | ADC_BUFFER_CLEAR_REG = 0x2a, |
9ef4dea6 BP |
142 | ADC_QUEUE_HIGH_REG = 0x2c, /* high channel for internal queue, use adc_chan_bits() inline above */ |
143 | DAC_CONTROL0_REG = 0x50, /* dac control register 0 */ | |
144 | DAC_CONTROL1_REG = 0x52, /* dac control register 0 */ | |
145 | DAC_SAMPLE_INTERVAL_LOWER_REG = 0x54, /* lower 16 bits of dac sample interval counter */ | |
146 | DAC_SAMPLE_INTERVAL_UPPER_REG = 0x56, /* upper 8 bits of dac sample interval counter */ | |
88b12a9a FMH |
147 | DAC_SELECT_REG = 0x60, |
148 | DAC_START_REG = 0x64, | |
9ef4dea6 | 149 | DAC_BUFFER_CLEAR_REG = 0x66, /* clear dac buffer */ |
88b12a9a FMH |
150 | }; |
151 | static inline unsigned int dac_convert_reg(unsigned int channel) | |
152 | { | |
153 | return 0x70 + (2 * (channel & 0x1)); | |
154 | } | |
155 | static inline unsigned int dac_lsb_4020_reg(unsigned int channel) | |
156 | { | |
157 | return 0x70 + (4 * (channel & 0x1)); | |
158 | } | |
159 | static inline unsigned int dac_msb_4020_reg(unsigned int channel) | |
160 | { | |
161 | return 0x72 + (4 * (channel & 0x1)); | |
162 | } | |
163 | ||
164 | enum read_only_registers { | |
9ef4dea6 | 165 | HW_STATUS_REG = 0x0, /* hardware status register, reading this apparently clears pending interrupts as well */ |
88b12a9a FMH |
166 | PIPE1_READ_REG = 0x4, |
167 | ADC_READ_PNTR_REG = 0x8, | |
168 | LOWER_XFER_REG = 0x10, | |
169 | ADC_WRITE_PNTR_REG = 0xc, | |
170 | PREPOST_REG = 0x14, | |
171 | }; | |
172 | ||
173 | enum read_write_registers { | |
9ef4dea6 BP |
174 | I8255_4020_REG = 0x48, /* 8255 offset, for 4020 only */ |
175 | ADC_QUEUE_FIFO_REG = 0x100, /* external channel/gain queue, uses same bits as ADC_QUEUE_LOAD_REG */ | |
88b12a9a FMH |
176 | ADC_FIFO_REG = 0x200, /* adc data fifo */ |
177 | DAC_FIFO_REG = 0x300, /* dac data fifo, has weird interactions with external channel queue */ | |
178 | }; | |
179 | ||
9ef4dea6 | 180 | /* priv(dev)->dio_counter_iobase registers */ |
88b12a9a FMH |
181 | enum dio_counter_registers { |
182 | DIO_8255_OFFSET = 0x0, | |
183 | DO_REG = 0x20, | |
184 | DI_REG = 0x28, | |
185 | DIO_DIRECTION_60XX_REG = 0x40, | |
186 | DIO_DATA_60XX_REG = 0x48, | |
187 | }; | |
188 | ||
9ef4dea6 | 189 | /* bit definitions for write-only registers */ |
88b12a9a FMH |
190 | |
191 | enum intr_enable_contents { | |
9ef4dea6 BP |
192 | ADC_INTR_SRC_MASK = 0x3, /* bits that set adc interrupt source */ |
193 | ADC_INTR_QFULL_BITS = 0x0, /* interrupt fifo quater full */ | |
194 | ADC_INTR_EOC_BITS = 0x1, /* interrupt end of conversion */ | |
195 | ADC_INTR_EOSCAN_BITS = 0x2, /* interrupt end of scan */ | |
196 | ADC_INTR_EOSEQ_BITS = 0x3, /* interrupt end of sequence (probably wont use this it's pretty fancy) */ | |
197 | EN_ADC_INTR_SRC_BIT = 0x4, /* enable adc interrupt source */ | |
198 | EN_ADC_DONE_INTR_BIT = 0x8, /* enable adc aquisition done interrupt */ | |
88b12a9a FMH |
199 | DAC_INTR_SRC_MASK = 0x30, |
200 | DAC_INTR_QEMPTY_BITS = 0x0, | |
201 | DAC_INTR_HIGH_CHAN_BITS = 0x10, | |
9ef4dea6 | 202 | EN_DAC_INTR_SRC_BIT = 0x40, /* enable dac interrupt source */ |
88b12a9a | 203 | EN_DAC_DONE_INTR_BIT = 0x80, |
9ef4dea6 BP |
204 | EN_ADC_ACTIVE_INTR_BIT = 0x200, /* enable adc active interrupt */ |
205 | EN_ADC_STOP_INTR_BIT = 0x400, /* enable adc stop trigger interrupt */ | |
206 | EN_DAC_ACTIVE_INTR_BIT = 0x800, /* enable dac active interrupt */ | |
207 | EN_DAC_UNDERRUN_BIT = 0x4000, /* enable dac underrun status bit */ | |
208 | EN_ADC_OVERRUN_BIT = 0x8000, /* enable adc overrun status bit */ | |
88b12a9a FMH |
209 | }; |
210 | ||
211 | enum hw_config_contents { | |
9ef4dea6 BP |
212 | MASTER_CLOCK_4020_MASK = 0x3, /* bits that specify master clock source for 4020 */ |
213 | INTERNAL_CLOCK_4020_BITS = 0x1, /* use 40 MHz internal master clock for 4020 */ | |
214 | BNC_CLOCK_4020_BITS = 0x2, /* use BNC input for master clock */ | |
215 | EXT_CLOCK_4020_BITS = 0x3, /* use dio input for master clock */ | |
216 | EXT_QUEUE_BIT = 0x200, /* use external channel/gain queue (more versatile than internal queue) */ | |
217 | SLOW_DAC_BIT = 0x400, /* use 225 nanosec strobe when loading dac instead of 50 nanosec */ | |
218 | HW_CONFIG_DUMMY_BITS = 0x2000, /* bit with unknown function yet given as default value in pci-das64 manual */ | |
219 | DMA_CH_SELECT_BIT = 0x8000, /* bit selects channels 1/0 for analog input/output, otherwise 0/1 */ | |
220 | FIFO_SIZE_REG = 0x4, /* allows adjustment of fifo sizes */ | |
221 | DAC_FIFO_SIZE_MASK = 0xff00, /* bits that set dac fifo size */ | |
88b12a9a FMH |
222 | DAC_FIFO_BITS = 0xf800, /* 8k sample ao fifo */ |
223 | }; | |
224 | #define DAC_FIFO_SIZE 0x2000 | |
225 | ||
226 | enum daq_atrig_low_4020_contents { | |
9ef4dea6 BP |
227 | EXT_AGATE_BNC_BIT = 0x8000, /* use trig/ext clk bnc input for analog gate signal */ |
228 | EXT_STOP_TRIG_BNC_BIT = 0x4000, /* use trig/ext clk bnc input for external stop trigger signal */ | |
229 | EXT_START_TRIG_BNC_BIT = 0x2000, /* use trig/ext clk bnc input for external start trigger signal */ | |
88b12a9a FMH |
230 | }; |
231 | static inline uint16_t analog_trig_low_threshold_bits(uint16_t threshold) | |
232 | { | |
233 | return threshold & 0xfff; | |
234 | } | |
235 | ||
236 | enum adc_control0_contents { | |
9ef4dea6 BP |
237 | ADC_GATE_SRC_MASK = 0x3, /* bits that select gate */ |
238 | ADC_SOFT_GATE_BITS = 0x1, /* software gate */ | |
239 | ADC_EXT_GATE_BITS = 0x2, /* external digital gate */ | |
240 | ADC_ANALOG_GATE_BITS = 0x3, /* analog level gate */ | |
241 | ADC_GATE_LEVEL_BIT = 0x4, /* level-sensitive gate (for digital) */ | |
242 | ADC_GATE_POLARITY_BIT = 0x8, /* gate active low */ | |
88b12a9a FMH |
243 | ADC_START_TRIG_SOFT_BITS = 0x10, |
244 | ADC_START_TRIG_EXT_BITS = 0x20, | |
245 | ADC_START_TRIG_ANALOG_BITS = 0x30, | |
246 | ADC_START_TRIG_MASK = 0x30, | |
9ef4dea6 BP |
247 | ADC_START_TRIG_FALLING_BIT = 0x40, /* trig 1 uses falling edge */ |
248 | ADC_EXT_CONV_FALLING_BIT = 0x800, /* external pacing uses falling edge */ | |
249 | ADC_SAMPLE_COUNTER_EN_BIT = 0x1000, /* enable hardware scan counter */ | |
250 | ADC_DMA_DISABLE_BIT = 0x4000, /* disables dma */ | |
251 | ADC_ENABLE_BIT = 0x8000, /* master adc enable */ | |
88b12a9a FMH |
252 | }; |
253 | ||
254 | enum adc_control1_contents { | |
9ef4dea6 | 255 | ADC_QUEUE_CONFIG_BIT = 0x1, /* should be set for boards with > 16 channels */ |
88b12a9a FMH |
256 | CONVERT_POLARITY_BIT = 0x10, |
257 | EOC_POLARITY_BIT = 0x20, | |
9ef4dea6 BP |
258 | ADC_SW_GATE_BIT = 0x40, /* software gate of adc */ |
259 | ADC_DITHER_BIT = 0x200, /* turn on extra noise for dithering */ | |
88b12a9a FMH |
260 | RETRIGGER_BIT = 0x800, |
261 | ADC_LO_CHANNEL_4020_MASK = 0x300, | |
262 | ADC_HI_CHANNEL_4020_MASK = 0xc00, | |
9ef4dea6 BP |
263 | TWO_CHANNEL_4020_BITS = 0x1000, /* two channel mode for 4020 */ |
264 | FOUR_CHANNEL_4020_BITS = 0x2000, /* four channel mode for 4020 */ | |
88b12a9a FMH |
265 | CHANNEL_MODE_4020_MASK = 0x3000, |
266 | ADC_MODE_MASK = 0xf000, | |
267 | }; | |
268 | static inline uint16_t adc_lo_chan_4020_bits(unsigned int channel) | |
269 | { | |
270 | return (channel & 0x3) << 8; | |
271 | }; | |
272 | static inline uint16_t adc_hi_chan_4020_bits(unsigned int channel) | |
273 | { | |
274 | return (channel & 0x3) << 10; | |
275 | }; | |
276 | static inline uint16_t adc_mode_bits(unsigned int mode) | |
277 | { | |
278 | return (mode & 0xf) << 12; | |
279 | }; | |
280 | ||
281 | enum calibration_contents { | |
282 | SELECT_8800_BIT = 0x1, | |
283 | SELECT_8402_64XX_BIT = 0x2, | |
284 | SELECT_1590_60XX_BIT = 0x2, | |
9ef4dea6 | 285 | CAL_EN_64XX_BIT = 0x40, /* calibration enable for 64xx series */ |
88b12a9a FMH |
286 | SERIAL_DATA_IN_BIT = 0x80, |
287 | SERIAL_CLOCK_BIT = 0x100, | |
9ef4dea6 | 288 | CAL_EN_60XX_BIT = 0x200, /* calibration enable for 60xx series */ |
88b12a9a FMH |
289 | CAL_GAIN_BIT = 0x800, |
290 | }; | |
291 | /* calibration sources for 6025 are: | |
292 | * 0 : ground | |
293 | * 1 : 10V | |
294 | * 2 : 5V | |
295 | * 3 : 0.5V | |
296 | * 4 : 0.05V | |
297 | * 5 : ground | |
298 | * 6 : dac channel 0 | |
299 | * 7 : dac channel 1 | |
300 | */ | |
301 | static inline uint16_t adc_src_bits(unsigned int source) | |
302 | { | |
303 | return (source & 0xf) << 3; | |
304 | }; | |
305 | ||
306 | static inline uint16_t adc_convert_chan_4020_bits(unsigned int channel) | |
307 | { | |
308 | return (channel & 0x3) << 8; | |
309 | }; | |
310 | ||
311 | enum adc_queue_load_contents { | |
9ef4dea6 BP |
312 | UNIP_BIT = 0x800, /* unipolar/bipolar bit */ |
313 | ADC_SE_DIFF_BIT = 0x1000, /* single-ended/ differential bit */ | |
314 | ADC_COMMON_BIT = 0x2000, /* non-referenced single-ended (common-mode input) */ | |
315 | QUEUE_EOSEQ_BIT = 0x4000, /* queue end of sequence */ | |
316 | QUEUE_EOSCAN_BIT = 0x8000, /* queue end of scan */ | |
88b12a9a FMH |
317 | }; |
318 | static inline uint16_t adc_chan_bits(unsigned int channel) | |
319 | { | |
320 | return channel & 0x3f; | |
321 | }; | |
322 | ||
323 | enum dac_control0_contents { | |
9ef4dea6 | 324 | DAC_ENABLE_BIT = 0x8000, /* dac controller enable bit */ |
88b12a9a FMH |
325 | DAC_CYCLIC_STOP_BIT = 0x4000, |
326 | DAC_WAVEFORM_MODE_BIT = 0x100, | |
327 | DAC_EXT_UPDATE_FALLING_BIT = 0x80, | |
328 | DAC_EXT_UPDATE_ENABLE_BIT = 0x40, | |
329 | WAVEFORM_TRIG_MASK = 0x30, | |
330 | WAVEFORM_TRIG_DISABLED_BITS = 0x0, | |
331 | WAVEFORM_TRIG_SOFT_BITS = 0x10, | |
332 | WAVEFORM_TRIG_EXT_BITS = 0x20, | |
333 | WAVEFORM_TRIG_ADC1_BITS = 0x30, | |
334 | WAVEFORM_TRIG_FALLING_BIT = 0x8, | |
335 | WAVEFORM_GATE_LEVEL_BIT = 0x4, | |
336 | WAVEFORM_GATE_ENABLE_BIT = 0x2, | |
337 | WAVEFORM_GATE_SELECT_BIT = 0x1, | |
338 | }; | |
339 | ||
340 | enum dac_control1_contents { | |
341 | DAC_WRITE_POLARITY_BIT = 0x800, /* board-dependent setting */ | |
342 | DAC1_EXT_REF_BIT = 0x200, | |
343 | DAC0_EXT_REF_BIT = 0x100, | |
9ef4dea6 | 344 | DAC_OUTPUT_ENABLE_BIT = 0x80, /* dac output enable bit */ |
88b12a9a FMH |
345 | DAC_UPDATE_POLARITY_BIT = 0x40, /* board-dependent setting */ |
346 | DAC_SW_GATE_BIT = 0x20, | |
347 | DAC1_UNIPOLAR_BIT = 0x8, | |
348 | DAC0_UNIPOLAR_BIT = 0x2, | |
349 | }; | |
350 | ||
9ef4dea6 | 351 | /* bit definitions for read-only registers */ |
88b12a9a FMH |
352 | enum hw_status_contents { |
353 | DAC_UNDERRUN_BIT = 0x1, | |
354 | ADC_OVERRUN_BIT = 0x2, | |
355 | DAC_ACTIVE_BIT = 0x4, | |
356 | ADC_ACTIVE_BIT = 0x8, | |
357 | DAC_INTR_PENDING_BIT = 0x10, | |
358 | ADC_INTR_PENDING_BIT = 0x20, | |
359 | DAC_DONE_BIT = 0x40, | |
360 | ADC_DONE_BIT = 0x80, | |
361 | EXT_INTR_PENDING_BIT = 0x100, | |
362 | ADC_STOP_BIT = 0x200, | |
363 | }; | |
364 | static inline uint16_t pipe_full_bits(uint16_t hw_status_bits) | |
365 | { | |
366 | return (hw_status_bits >> 10) & 0x3; | |
367 | }; | |
368 | ||
369 | static inline unsigned int dma_chain_flag_bits(uint16_t prepost_bits) | |
370 | { | |
371 | return (prepost_bits >> 6) & 0x3; | |
372 | } | |
373 | static inline unsigned int adc_upper_read_ptr_code(uint16_t prepost_bits) | |
374 | { | |
375 | return (prepost_bits >> 12) & 0x3; | |
376 | } | |
377 | static inline unsigned int adc_upper_write_ptr_code(uint16_t prepost_bits) | |
378 | { | |
379 | return (prepost_bits >> 14) & 0x3; | |
380 | } | |
381 | ||
9ef4dea6 | 382 | /* I2C addresses for 4020 */ |
88b12a9a FMH |
383 | enum i2c_addresses { |
384 | RANGE_CAL_I2C_ADDR = 0x20, | |
385 | CALDAC0_I2C_ADDR = 0xc, | |
386 | CALDAC1_I2C_ADDR = 0xd, | |
387 | }; | |
388 | ||
389 | enum range_cal_i2c_contents { | |
9ef4dea6 BP |
390 | ADC_SRC_4020_MASK = 0x70, /* bits that set what source the adc converter measures */ |
391 | BNC_TRIG_THRESHOLD_0V_BIT = 0x80, /* make bnc trig/ext clock threshold 0V instead of 2.5V */ | |
88b12a9a FMH |
392 | }; |
393 | static inline uint8_t adc_src_4020_bits(unsigned int source) | |
394 | { | |
395 | return (source << 4) & ADC_SRC_4020_MASK; | |
396 | }; | |
397 | static inline uint8_t attenuate_bit(unsigned int channel) | |
398 | { | |
9ef4dea6 | 399 | /* attenuate channel (+-5V input range) */ |
88b12a9a FMH |
400 | return 1 << (channel & 0x3); |
401 | }; | |
402 | ||
9ef4dea6 | 403 | /* analog input ranges for 64xx boards */ |
9ced1de6 | 404 | static const struct comedi_lrange ai_ranges_64xx = { |
88b12a9a FMH |
405 | 8, |
406 | { | |
407 | BIP_RANGE(10), | |
408 | BIP_RANGE(5), | |
409 | BIP_RANGE(2.5), | |
410 | BIP_RANGE(1.25), | |
411 | UNI_RANGE(10), | |
412 | UNI_RANGE(5), | |
413 | UNI_RANGE(2.5), | |
414 | UNI_RANGE(1.25) | |
415 | } | |
416 | }; | |
417 | ||
418 | /* analog input ranges for 60xx boards */ | |
9ced1de6 | 419 | static const struct comedi_lrange ai_ranges_60xx = { |
88b12a9a FMH |
420 | 4, |
421 | { | |
422 | BIP_RANGE(10), | |
423 | BIP_RANGE(5), | |
424 | BIP_RANGE(0.5), | |
425 | BIP_RANGE(0.05), | |
426 | } | |
427 | }; | |
428 | ||
429 | /* analog input ranges for 6030, etc boards */ | |
9ced1de6 | 430 | static const struct comedi_lrange ai_ranges_6030 = { |
88b12a9a FMH |
431 | 14, |
432 | { | |
433 | BIP_RANGE(10), | |
434 | BIP_RANGE(5), | |
435 | BIP_RANGE(2), | |
436 | BIP_RANGE(1), | |
437 | BIP_RANGE(0.5), | |
438 | BIP_RANGE(0.2), | |
439 | BIP_RANGE(0.1), | |
440 | UNI_RANGE(10), | |
441 | UNI_RANGE(5), | |
442 | UNI_RANGE(2), | |
443 | UNI_RANGE(1), | |
444 | UNI_RANGE(0.5), | |
445 | UNI_RANGE(0.2), | |
446 | UNI_RANGE(0.1), | |
447 | } | |
448 | }; | |
449 | ||
450 | /* analog input ranges for 6052, etc boards */ | |
9ced1de6 | 451 | static const struct comedi_lrange ai_ranges_6052 = { |
88b12a9a FMH |
452 | 15, |
453 | { | |
454 | BIP_RANGE(10), | |
455 | BIP_RANGE(5), | |
456 | BIP_RANGE(2.5), | |
457 | BIP_RANGE(1), | |
458 | BIP_RANGE(0.5), | |
459 | BIP_RANGE(0.25), | |
460 | BIP_RANGE(0.1), | |
461 | BIP_RANGE(0.05), | |
462 | UNI_RANGE(10), | |
463 | UNI_RANGE(5), | |
464 | UNI_RANGE(2), | |
465 | UNI_RANGE(1), | |
466 | UNI_RANGE(0.5), | |
467 | UNI_RANGE(0.2), | |
468 | UNI_RANGE(0.1), | |
469 | } | |
470 | }; | |
471 | ||
9ef4dea6 | 472 | /* analog input ranges for 4020 board */ |
9ced1de6 | 473 | static const struct comedi_lrange ai_ranges_4020 = { |
88b12a9a FMH |
474 | 2, |
475 | { | |
476 | BIP_RANGE(5), | |
477 | BIP_RANGE(1), | |
478 | } | |
479 | }; | |
480 | ||
9ef4dea6 | 481 | /* analog output ranges */ |
9ced1de6 | 482 | static const struct comedi_lrange ao_ranges_64xx = { |
88b12a9a FMH |
483 | 4, |
484 | { | |
485 | BIP_RANGE(5), | |
486 | BIP_RANGE(10), | |
487 | UNI_RANGE(5), | |
488 | UNI_RANGE(10), | |
489 | } | |
490 | }; | |
491 | static const int ao_range_code_64xx[] = { | |
492 | 0x0, | |
493 | 0x1, | |
494 | 0x2, | |
495 | 0x3, | |
496 | }; | |
497 | ||
9ced1de6 | 498 | static const struct comedi_lrange ao_ranges_60xx = { |
88b12a9a FMH |
499 | 1, |
500 | { | |
501 | BIP_RANGE(10), | |
502 | } | |
503 | }; | |
504 | static const int ao_range_code_60xx[] = { | |
505 | 0x0, | |
506 | }; | |
507 | ||
9ced1de6 | 508 | static const struct comedi_lrange ao_ranges_6030 = { |
88b12a9a FMH |
509 | 2, |
510 | { | |
511 | BIP_RANGE(10), | |
512 | UNI_RANGE(10), | |
513 | } | |
514 | }; | |
515 | static const int ao_range_code_6030[] = { | |
516 | 0x0, | |
517 | 0x2, | |
518 | }; | |
519 | ||
9ced1de6 | 520 | static const struct comedi_lrange ao_ranges_4020 = { |
88b12a9a FMH |
521 | 2, |
522 | { | |
523 | BIP_RANGE(5), | |
524 | BIP_RANGE(10), | |
525 | } | |
526 | }; | |
527 | static const int ao_range_code_4020[] = { | |
528 | 0x1, | |
529 | 0x0, | |
530 | }; | |
531 | ||
532 | enum register_layout { | |
533 | LAYOUT_60XX, | |
534 | LAYOUT_64XX, | |
535 | LAYOUT_4020, | |
536 | }; | |
537 | ||
675935dd | 538 | struct hw_fifo_info { |
88b12a9a FMH |
539 | unsigned int num_segments; |
540 | unsigned int max_segment_length; | |
541 | unsigned int sample_packing_ratio; | |
542 | uint16_t fifo_size_reg_mask; | |
675935dd | 543 | }; |
88b12a9a | 544 | |
222ab1bc | 545 | struct pcidas64_board { |
88b12a9a | 546 | const char *name; |
9ef4dea6 BP |
547 | int device_id; /* pci device id */ |
548 | int ai_se_chans; /* number of ai inputs in single-ended mode */ | |
549 | int ai_bits; /* analog input resolution */ | |
550 | int ai_speed; /* fastest conversion period in ns */ | |
9ced1de6 | 551 | const struct comedi_lrange *ai_range_table; |
9ef4dea6 BP |
552 | int ao_nchan; /* number of analog out channels */ |
553 | int ao_bits; /* analog output resolution */ | |
554 | int ao_scan_speed; /* analog output speed (for a scan, not conversion) */ | |
9ced1de6 | 555 | const struct comedi_lrange *ao_range_table; |
88b12a9a | 556 | const int *ao_range_code; |
675935dd | 557 | const struct hw_fifo_info *const ai_fifo; |
9ef4dea6 | 558 | enum register_layout layout; /* different board families have slightly different registers */ |
88b12a9a | 559 | unsigned has_8255:1; |
222ab1bc | 560 | }; |
88b12a9a | 561 | |
675935dd | 562 | static const struct hw_fifo_info ai_fifo_4020 = { |
88b12a9a FMH |
563 | num_segments:2, |
564 | max_segment_length:0x8000, | |
565 | sample_packing_ratio:2, | |
566 | fifo_size_reg_mask:0x7f, | |
567 | }; | |
568 | ||
675935dd | 569 | static const struct hw_fifo_info ai_fifo_64xx = { |
88b12a9a FMH |
570 | num_segments:4, |
571 | max_segment_length:0x800, | |
572 | sample_packing_ratio:1, | |
573 | fifo_size_reg_mask:0x3f, | |
574 | }; | |
575 | ||
675935dd | 576 | static const struct hw_fifo_info ai_fifo_60xx = { |
88b12a9a FMH |
577 | num_segments:4, |
578 | max_segment_length:0x800, | |
579 | sample_packing_ratio:1, | |
580 | fifo_size_reg_mask:0x7f, | |
581 | }; | |
582 | ||
583 | /* maximum number of dma transfers we will chain together into a ring | |
584 | * (and the maximum number of dma buffers we maintain) */ | |
585 | #define MAX_AI_DMA_RING_COUNT (0x80000 / DMA_BUFFER_SIZE) | |
586 | #define MIN_AI_DMA_RING_COUNT (0x10000 / DMA_BUFFER_SIZE) | |
587 | #define AO_DMA_RING_COUNT (0x10000 / DMA_BUFFER_SIZE) | |
222ab1bc | 588 | static inline unsigned int ai_dma_ring_count(struct pcidas64_board * board) |
88b12a9a FMH |
589 | { |
590 | if (board->layout == LAYOUT_4020) | |
591 | return MAX_AI_DMA_RING_COUNT; | |
592 | else | |
593 | return MIN_AI_DMA_RING_COUNT; | |
594 | } | |
595 | ||
596 | static const int bytes_in_sample = 2; | |
597 | ||
222ab1bc | 598 | static const struct pcidas64_board pcidas64_boards[] = { |
88b12a9a FMH |
599 | { |
600 | name: "pci-das6402/16", | |
601 | device_id:0x1d, | |
602 | ai_se_chans:64, | |
603 | ai_bits: 16, | |
604 | ai_speed:5000, | |
605 | ao_nchan:2, | |
606 | ao_bits: 16, | |
607 | ao_scan_speed:10000, | |
608 | layout: LAYOUT_64XX, | |
609 | ai_range_table:&ai_ranges_64xx, | |
610 | ao_range_table:&ao_ranges_64xx, | |
611 | ao_range_code:ao_range_code_64xx, | |
612 | ai_fifo: &ai_fifo_64xx, | |
613 | has_8255:1, | |
614 | }, | |
615 | { | |
9ef4dea6 | 616 | name: "pci-das6402/12", /* XXX check */ |
88b12a9a FMH |
617 | device_id:0x1e, |
618 | ai_se_chans:64, | |
619 | ai_bits: 12, | |
620 | ai_speed:5000, | |
621 | ao_nchan:2, | |
622 | ao_bits: 12, | |
623 | ao_scan_speed:10000, | |
624 | layout: LAYOUT_64XX, | |
625 | ai_range_table:&ai_ranges_64xx, | |
626 | ao_range_table:&ao_ranges_64xx, | |
627 | ao_range_code:ao_range_code_64xx, | |
628 | ai_fifo: &ai_fifo_64xx, | |
629 | has_8255:1, | |
630 | }, | |
631 | { | |
632 | name: "pci-das64/m1/16", | |
633 | device_id:0x35, | |
634 | ai_se_chans:64, | |
635 | ai_bits: 16, | |
636 | ai_speed:1000, | |
637 | ao_nchan:2, | |
638 | ao_bits: 16, | |
639 | ao_scan_speed:10000, | |
640 | layout: LAYOUT_64XX, | |
641 | ai_range_table:&ai_ranges_64xx, | |
642 | ao_range_table:&ao_ranges_64xx, | |
643 | ao_range_code:ao_range_code_64xx, | |
644 | ai_fifo: &ai_fifo_64xx, | |
645 | has_8255:1, | |
646 | }, | |
647 | { | |
648 | name: "pci-das64/m2/16", | |
649 | device_id:0x36, | |
650 | ai_se_chans:64, | |
651 | ai_bits: 16, | |
652 | ai_speed:500, | |
653 | ao_nchan:2, | |
654 | ao_bits: 16, | |
655 | ao_scan_speed:10000, | |
656 | layout: LAYOUT_64XX, | |
657 | ai_range_table:&ai_ranges_64xx, | |
658 | ao_range_table:&ao_ranges_64xx, | |
659 | ao_range_code:ao_range_code_64xx, | |
660 | ai_fifo: &ai_fifo_64xx, | |
661 | has_8255:1, | |
662 | }, | |
663 | { | |
664 | name: "pci-das64/m3/16", | |
665 | device_id:0x37, | |
666 | ai_se_chans:64, | |
667 | ai_bits: 16, | |
668 | ai_speed:333, | |
669 | ao_nchan:2, | |
670 | ao_bits: 16, | |
671 | ao_scan_speed:10000, | |
672 | layout: LAYOUT_64XX, | |
673 | ai_range_table:&ai_ranges_64xx, | |
674 | ao_range_table:&ao_ranges_64xx, | |
675 | ao_range_code:ao_range_code_64xx, | |
676 | ai_fifo: &ai_fifo_64xx, | |
677 | has_8255:1, | |
678 | }, | |
679 | { | |
680 | .name = "pci-das6013", | |
681 | .device_id = 0x78, | |
682 | .ai_se_chans = 16, | |
683 | .ai_bits = 16, | |
684 | .ai_speed = 5000, | |
685 | .ao_nchan = 0, | |
686 | .ao_bits = 16, | |
687 | .layout = LAYOUT_60XX, | |
688 | .ai_range_table = &ai_ranges_60xx, | |
689 | .ao_range_table = &ao_ranges_60xx, | |
690 | .ao_range_code = ao_range_code_60xx, | |
691 | .ai_fifo = &ai_fifo_60xx, | |
692 | .has_8255 = 0, | |
693 | }, | |
694 | { | |
695 | name: "pci-das6014", | |
696 | device_id:0x79, | |
697 | ai_se_chans:16, | |
698 | ai_bits: 16, | |
699 | ai_speed:5000, | |
700 | ao_nchan:2, | |
701 | ao_bits: 16, | |
702 | ao_scan_speed:100000, | |
703 | layout: LAYOUT_60XX, | |
704 | ai_range_table:&ai_ranges_60xx, | |
705 | ao_range_table:&ao_ranges_60xx, | |
706 | ao_range_code:ao_range_code_60xx, | |
707 | ai_fifo: &ai_fifo_60xx, | |
708 | has_8255:0, | |
709 | }, | |
710 | { | |
711 | name: "pci-das6023", | |
712 | device_id:0x5d, | |
713 | ai_se_chans:16, | |
714 | ai_bits: 12, | |
715 | ai_speed:5000, | |
716 | ao_nchan:0, | |
717 | ao_scan_speed:100000, | |
718 | layout: LAYOUT_60XX, | |
719 | ai_range_table:&ai_ranges_60xx, | |
720 | ao_range_table:&ao_ranges_60xx, | |
721 | ao_range_code:ao_range_code_60xx, | |
722 | ai_fifo: &ai_fifo_60xx, | |
723 | has_8255:1, | |
724 | }, | |
725 | { | |
726 | name: "pci-das6025", | |
727 | device_id:0x5e, | |
728 | ai_se_chans:16, | |
729 | ai_bits: 12, | |
730 | ai_speed:5000, | |
731 | ao_nchan:2, | |
732 | ao_bits: 12, | |
733 | ao_scan_speed:100000, | |
734 | layout: LAYOUT_60XX, | |
735 | ai_range_table:&ai_ranges_60xx, | |
736 | ao_range_table:&ao_ranges_60xx, | |
737 | ao_range_code:ao_range_code_60xx, | |
738 | ai_fifo: &ai_fifo_60xx, | |
739 | has_8255:1, | |
740 | }, | |
741 | { | |
742 | name: "pci-das6030", | |
743 | device_id:0x5f, | |
744 | ai_se_chans:16, | |
745 | ai_bits: 16, | |
746 | ai_speed:10000, | |
747 | ao_nchan:2, | |
748 | ao_bits: 16, | |
749 | ao_scan_speed:10000, | |
750 | layout: LAYOUT_60XX, | |
751 | ai_range_table:&ai_ranges_6030, | |
752 | ao_range_table:&ao_ranges_6030, | |
753 | ao_range_code:ao_range_code_6030, | |
754 | ai_fifo: &ai_fifo_60xx, | |
755 | has_8255:0, | |
756 | }, | |
757 | { | |
758 | name: "pci-das6031", | |
759 | device_id:0x60, | |
760 | ai_se_chans:64, | |
761 | ai_bits: 16, | |
762 | ai_speed:10000, | |
763 | ao_nchan:2, | |
764 | ao_bits: 16, | |
765 | ao_scan_speed:10000, | |
766 | layout: LAYOUT_60XX, | |
767 | ai_range_table:&ai_ranges_6030, | |
768 | ao_range_table:&ao_ranges_6030, | |
769 | ao_range_code:ao_range_code_6030, | |
770 | ai_fifo: &ai_fifo_60xx, | |
771 | has_8255:0, | |
772 | }, | |
773 | { | |
774 | name: "pci-das6032", | |
775 | device_id:0x61, | |
776 | ai_se_chans:16, | |
777 | ai_bits: 16, | |
778 | ai_speed:10000, | |
779 | ao_nchan:0, | |
780 | layout: LAYOUT_60XX, | |
781 | ai_range_table:&ai_ranges_6030, | |
782 | ai_fifo: &ai_fifo_60xx, | |
783 | has_8255:0, | |
784 | }, | |
785 | { | |
786 | name: "pci-das6033", | |
787 | device_id:0x62, | |
788 | ai_se_chans:64, | |
789 | ai_bits: 16, | |
790 | ai_speed:10000, | |
791 | ao_nchan:0, | |
792 | layout: LAYOUT_60XX, | |
793 | ai_range_table:&ai_ranges_6030, | |
794 | ai_fifo: &ai_fifo_60xx, | |
795 | has_8255:0, | |
796 | }, | |
797 | { | |
798 | name: "pci-das6034", | |
799 | device_id:0x63, | |
800 | ai_se_chans:16, | |
801 | ai_bits: 16, | |
802 | ai_speed:5000, | |
803 | ao_nchan:0, | |
804 | ao_scan_speed:0, | |
805 | layout: LAYOUT_60XX, | |
806 | ai_range_table:&ai_ranges_60xx, | |
807 | ai_fifo: &ai_fifo_60xx, | |
808 | has_8255:0, | |
809 | }, | |
810 | { | |
811 | name: "pci-das6035", | |
812 | device_id:0x64, | |
813 | ai_se_chans:16, | |
814 | ai_bits: 16, | |
815 | ai_speed:5000, | |
816 | ao_nchan:2, | |
817 | ao_bits: 12, | |
818 | ao_scan_speed:100000, | |
819 | layout: LAYOUT_60XX, | |
820 | ai_range_table:&ai_ranges_60xx, | |
821 | ao_range_table:&ao_ranges_60xx, | |
822 | ao_range_code:ao_range_code_60xx, | |
823 | ai_fifo: &ai_fifo_60xx, | |
824 | has_8255:0, | |
825 | }, | |
826 | { | |
827 | name: "pci-das6036", | |
828 | device_id:0x6f, | |
829 | ai_se_chans:16, | |
830 | ai_bits: 16, | |
831 | ai_speed:5000, | |
832 | ao_nchan:2, | |
833 | ao_bits: 16, | |
834 | ao_scan_speed:100000, | |
835 | layout: LAYOUT_60XX, | |
836 | ai_range_table:&ai_ranges_60xx, | |
837 | ao_range_table:&ao_ranges_60xx, | |
838 | ao_range_code:ao_range_code_60xx, | |
839 | ai_fifo: &ai_fifo_60xx, | |
840 | has_8255:0, | |
841 | }, | |
842 | { | |
843 | name: "pci-das6040", | |
844 | device_id:0x65, | |
845 | ai_se_chans:16, | |
846 | ai_bits: 12, | |
847 | ai_speed:2000, | |
848 | ao_nchan:2, | |
849 | ao_bits: 12, | |
850 | ao_scan_speed:1000, | |
851 | layout: LAYOUT_60XX, | |
852 | ai_range_table:&ai_ranges_6052, | |
853 | ao_range_table:&ao_ranges_6030, | |
854 | ao_range_code:ao_range_code_6030, | |
855 | ai_fifo: &ai_fifo_60xx, | |
856 | has_8255:0, | |
857 | }, | |
858 | { | |
859 | name: "pci-das6052", | |
860 | device_id:0x66, | |
861 | ai_se_chans:16, | |
862 | ai_bits: 16, | |
863 | ai_speed:3333, | |
864 | ao_nchan:2, | |
865 | ao_bits: 16, | |
866 | ao_scan_speed:3333, | |
867 | layout: LAYOUT_60XX, | |
868 | ai_range_table:&ai_ranges_6052, | |
869 | ao_range_table:&ao_ranges_6030, | |
870 | ao_range_code:ao_range_code_6030, | |
871 | ai_fifo: &ai_fifo_60xx, | |
872 | has_8255:0, | |
873 | }, | |
874 | { | |
875 | name: "pci-das6070", | |
876 | device_id:0x67, | |
877 | ai_se_chans:16, | |
878 | ai_bits: 12, | |
879 | ai_speed:800, | |
880 | ao_nchan:2, | |
881 | ao_bits: 12, | |
882 | ao_scan_speed:1000, | |
883 | layout: LAYOUT_60XX, | |
884 | ai_range_table:&ai_ranges_6052, | |
885 | ao_range_table:&ao_ranges_6030, | |
886 | ao_range_code:ao_range_code_6030, | |
887 | ai_fifo: &ai_fifo_60xx, | |
888 | has_8255:0, | |
889 | }, | |
890 | { | |
891 | name: "pci-das6071", | |
892 | device_id:0x68, | |
893 | ai_se_chans:64, | |
894 | ai_bits: 12, | |
895 | ai_speed:800, | |
896 | ao_nchan:2, | |
897 | ao_bits: 12, | |
898 | ao_scan_speed:1000, | |
899 | layout: LAYOUT_60XX, | |
900 | ai_range_table:&ai_ranges_6052, | |
901 | ao_range_table:&ao_ranges_6030, | |
902 | ao_range_code:ao_range_code_6030, | |
903 | ai_fifo: &ai_fifo_60xx, | |
904 | has_8255:0, | |
905 | }, | |
906 | { | |
907 | name: "pci-das4020/12", | |
908 | device_id:0x52, | |
909 | ai_se_chans:4, | |
910 | ai_bits: 12, | |
911 | ai_speed:50, | |
912 | ao_bits: 12, | |
913 | ao_nchan:2, | |
9ef4dea6 | 914 | ao_scan_speed:0, /* no hardware pacing on ao */ |
88b12a9a FMH |
915 | layout: LAYOUT_4020, |
916 | ai_range_table:&ai_ranges_4020, | |
917 | ao_range_table:&ao_ranges_4020, | |
918 | ao_range_code:ao_range_code_4020, | |
919 | ai_fifo: &ai_fifo_4020, | |
920 | has_8255:1, | |
921 | }, | |
922 | #if 0 | |
923 | { | |
924 | name: "pci-das6402/16/jr", | |
9ef4dea6 | 925 | device_id:0 /* XXX, */ |
88b12a9a FMH |
926 | ai_se_chans:64, |
927 | ai_bits: 16, | |
928 | ai_speed:5000, | |
929 | ao_nchan:0, | |
930 | ao_scan_speed:10000, | |
931 | layout: LAYOUT_64XX, | |
932 | ai_range_table:&ai_ranges_64xx, | |
933 | ai_fifo: ai_fifo_64xx, | |
934 | has_8255:1, | |
935 | }, | |
936 | { | |
937 | name: "pci-das64/m1/16/jr", | |
9ef4dea6 | 938 | device_id:0 /* XXX, */ |
88b12a9a FMH |
939 | ai_se_chans:64, |
940 | ai_bits: 16, | |
941 | ai_speed:1000, | |
942 | ao_nchan:0, | |
943 | ao_scan_speed:10000, | |
944 | layout: LAYOUT_64XX, | |
945 | ai_range_table:&ai_ranges_64xx, | |
946 | ai_fifo: ai_fifo_64xx, | |
947 | has_8255:1, | |
948 | }, | |
949 | { | |
950 | name: "pci-das64/m2/16/jr", | |
9ef4dea6 | 951 | device_id:0 /* XXX, */ |
88b12a9a FMH |
952 | ai_se_chans:64, |
953 | ai_bits: 16, | |
954 | ai_speed:500, | |
955 | ao_nchan:0, | |
956 | ao_scan_speed:10000, | |
957 | layout: LAYOUT_64XX, | |
958 | ai_range_table:&ai_ranges_64xx, | |
959 | ai_fifo: ai_fifo_64xx, | |
960 | has_8255:1, | |
961 | }, | |
962 | { | |
963 | name: "pci-das64/m3/16/jr", | |
9ef4dea6 | 964 | device_id:0 /* XXX, */ |
88b12a9a FMH |
965 | ai_se_chans:64, |
966 | ai_bits: 16, | |
967 | ai_speed:333, | |
968 | ao_nchan:0, | |
969 | ao_scan_speed:10000, | |
970 | layout: LAYOUT_64XX, | |
971 | ai_range_table:&ai_ranges_64xx, | |
972 | ai_fifo: ai_fifo_64xx, | |
973 | has_8255:1, | |
974 | }, | |
975 | { | |
976 | name: "pci-das64/m1/14", | |
9ef4dea6 | 977 | device_id:0, /* XXX */ |
88b12a9a FMH |
978 | ai_se_chans:64, |
979 | ai_bits: 14, | |
980 | ai_speed:1000, | |
981 | ao_nchan:2, | |
982 | ao_scan_speed:10000, | |
983 | layout: LAYOUT_64XX, | |
984 | ai_range_table:&ai_ranges_64xx, | |
985 | ai_fifo: ai_fifo_64xx, | |
986 | has_8255:1, | |
987 | }, | |
988 | { | |
989 | name: "pci-das64/m2/14", | |
9ef4dea6 | 990 | device_id:0, /* XXX */ |
88b12a9a FMH |
991 | ai_se_chans:64, |
992 | ai_bits: 14, | |
993 | ai_speed:500, | |
994 | ao_nchan:2, | |
995 | ao_scan_speed:10000, | |
996 | layout: LAYOUT_64XX, | |
997 | ai_range_table:&ai_ranges_64xx, | |
998 | ai_fifo: ai_fifo_64xx, | |
999 | has_8255:1, | |
1000 | }, | |
1001 | { | |
1002 | name: "pci-das64/m3/14", | |
9ef4dea6 | 1003 | device_id:0, /* XXX */ |
88b12a9a FMH |
1004 | ai_se_chans:64, |
1005 | ai_bits: 14, | |
1006 | ai_speed:333, | |
1007 | ao_nchan:2, | |
1008 | ao_scan_speed:10000, | |
1009 | layout: LAYOUT_64XX, | |
1010 | ai_range_table:&ai_ranges_64xx, | |
1011 | ai_fifo: ai_fifo_64xx, | |
1012 | has_8255:1, | |
1013 | }, | |
1014 | #endif | |
1015 | }; | |
1016 | ||
9ef4dea6 | 1017 | /* Number of boards in cb_pcidas_boards */ |
88b12a9a FMH |
1018 | static inline unsigned int num_boards(void) |
1019 | { | |
222ab1bc | 1020 | return sizeof(pcidas64_boards) / sizeof(struct pcidas64_board); |
88b12a9a FMH |
1021 | } |
1022 | ||
1023 | static DEFINE_PCI_DEVICE_TABLE(pcidas64_pci_table) = { | |
1024 | {PCI_VENDOR_ID_COMPUTERBOARDS, 0x001d, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, | |
1025 | {PCI_VENDOR_ID_COMPUTERBOARDS, 0x001e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, | |
1026 | {PCI_VENDOR_ID_COMPUTERBOARDS, 0x0035, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, | |
1027 | {PCI_VENDOR_ID_COMPUTERBOARDS, 0x0036, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, | |
1028 | {PCI_VENDOR_ID_COMPUTERBOARDS, 0x0037, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, | |
1029 | {PCI_VENDOR_ID_COMPUTERBOARDS, 0x0052, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, | |
1030 | {PCI_VENDOR_ID_COMPUTERBOARDS, 0x005d, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, | |
1031 | {PCI_VENDOR_ID_COMPUTERBOARDS, 0x005e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, | |
1032 | {PCI_VENDOR_ID_COMPUTERBOARDS, 0x005f, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, | |
1033 | {PCI_VENDOR_ID_COMPUTERBOARDS, 0x0061, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, | |
1034 | {PCI_VENDOR_ID_COMPUTERBOARDS, 0x0062, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, | |
1035 | {PCI_VENDOR_ID_COMPUTERBOARDS, 0x0063, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, | |
1036 | {PCI_VENDOR_ID_COMPUTERBOARDS, 0x0064, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, | |
1037 | {PCI_VENDOR_ID_COMPUTERBOARDS, 0x0066, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, | |
1038 | {PCI_VENDOR_ID_COMPUTERBOARDS, 0x0067, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, | |
1039 | {PCI_VENDOR_ID_COMPUTERBOARDS, 0x0068, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, | |
1040 | {PCI_VENDOR_ID_COMPUTERBOARDS, 0x006f, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, | |
1041 | {PCI_VENDOR_ID_COMPUTERBOARDS, 0x0078, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, | |
1042 | {PCI_VENDOR_ID_COMPUTERBOARDS, 0x0079, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, | |
1043 | {0} | |
1044 | }; | |
1045 | ||
1046 | MODULE_DEVICE_TABLE(pci, pcidas64_pci_table); | |
1047 | ||
222ab1bc | 1048 | static inline struct pcidas64_board *board(const struct comedi_device * dev) |
88b12a9a | 1049 | { |
222ab1bc | 1050 | return (struct pcidas64_board *) dev->board_ptr; |
88b12a9a FMH |
1051 | } |
1052 | ||
71b5f4f1 | 1053 | static inline unsigned short se_diff_bit_6xxx(struct comedi_device * dev, |
88b12a9a FMH |
1054 | int use_differential) |
1055 | { | |
1056 | if ((board(dev)->layout == LAYOUT_64XX && !use_differential) || | |
1057 | (board(dev)->layout == LAYOUT_60XX && use_differential)) | |
1058 | return ADC_SE_DIFF_BIT; | |
1059 | else | |
1060 | return 0; | |
1061 | }; | |
1062 | ||
1063 | struct ext_clock_info { | |
9ef4dea6 BP |
1064 | unsigned int divisor; /* master clock divisor to use for scans with external master clock */ |
1065 | unsigned int chanspec; /* chanspec for master clock input when used as scan begin src */ | |
88b12a9a FMH |
1066 | }; |
1067 | ||
1068 | /* this structure is for data unique to this hardware driver. */ | |
450032a3 BP |
1069 | struct pcidas64_private { |
1070 | ||
9ef4dea6 BP |
1071 | struct pci_dev *hw_dev; /* pointer to board's pci_dev struct */ |
1072 | /* base addresses (physical) */ | |
88b12a9a FMH |
1073 | resource_size_t plx9080_phys_iobase; |
1074 | resource_size_t main_phys_iobase; | |
1075 | resource_size_t dio_counter_phys_iobase; | |
9ef4dea6 | 1076 | /* base addresses (ioremapped) */ |
88b12a9a FMH |
1077 | void *plx9080_iobase; |
1078 | void *main_iobase; | |
1079 | void *dio_counter_iobase; | |
9ef4dea6 | 1080 | /* local address (used by dma controller) */ |
88b12a9a FMH |
1081 | uint32_t local0_iobase; |
1082 | uint32_t local1_iobase; | |
9ef4dea6 BP |
1083 | volatile unsigned int ai_count; /* number of analog input samples remaining */ |
1084 | uint16_t *ai_buffer[MAX_AI_DMA_RING_COUNT]; /* dma buffers for analog input */ | |
1085 | dma_addr_t ai_buffer_bus_addr[MAX_AI_DMA_RING_COUNT]; /* physical addresses of ai dma buffers */ | |
1086 | struct plx_dma_desc *ai_dma_desc; /* array of ai dma descriptors read by plx9080, allocated to get proper alignment */ | |
1087 | dma_addr_t ai_dma_desc_bus_addr; /* physical address of ai dma descriptor array */ | |
1088 | volatile unsigned int ai_dma_index; /* index of the ai dma descriptor/buffer that is currently being used */ | |
1089 | uint16_t *ao_buffer[AO_DMA_RING_COUNT]; /* dma buffers for analog output */ | |
1090 | dma_addr_t ao_buffer_bus_addr[AO_DMA_RING_COUNT]; /* physical addresses of ao dma buffers */ | |
88b12a9a FMH |
1091 | struct plx_dma_desc *ao_dma_desc; |
1092 | dma_addr_t ao_dma_desc_bus_addr; | |
9ef4dea6 BP |
1093 | volatile unsigned int ao_dma_index; /* keeps track of buffer where the next ao sample should go */ |
1094 | volatile unsigned long ao_count; /* number of analog output samples remaining */ | |
1095 | volatile unsigned int ao_value[2]; /* remember what the analog outputs are set to, to allow readback */ | |
1096 | unsigned int hw_revision; /* stc chip hardware revision number */ | |
1097 | volatile unsigned int intr_enable_bits; /* last bits sent to INTR_ENABLE_REG register */ | |
1098 | volatile uint16_t adc_control1_bits; /* last bits sent to ADC_CONTROL1_REG register */ | |
1099 | volatile uint16_t fifo_size_bits; /* last bits sent to FIFO_SIZE_REG register */ | |
1100 | volatile uint16_t hw_config_bits; /* last bits sent to HW_CONFIG_REG register */ | |
88b12a9a | 1101 | volatile uint16_t dac_control1_bits; |
9ef4dea6 BP |
1102 | volatile uint32_t plx_control_bits; /* last bits written to plx9080 control register */ |
1103 | volatile uint32_t plx_intcsr_bits; /* last bits written to plx interrupt control and status register */ | |
1104 | volatile int calibration_source; /* index of calibration source readable through ai ch0 */ | |
1105 | volatile uint8_t i2c_cal_range_bits; /* bits written to i2c calibration/range register */ | |
1106 | volatile unsigned int ext_trig_falling; /* configure digital triggers to trigger on falling edge */ | |
1107 | /* states of various devices stored to enable read-back */ | |
88b12a9a FMH |
1108 | unsigned int ad8402_state[2]; |
1109 | unsigned int caldac_state[8]; | |
1110 | volatile short ai_cmd_running; | |
1111 | unsigned int ai_fifo_segment_length; | |
1112 | struct ext_clock_info ext_clock; | |
790c5541 | 1113 | short ao_bounce_buffer[DAC_FIFO_SIZE]; |
450032a3 BP |
1114 | }; |
1115 | ||
88b12a9a FMH |
1116 | |
1117 | /* inline function that makes it easier to | |
1118 | * access the private structure. | |
1119 | */ | |
450032a3 | 1120 | static inline struct pcidas64_private *priv(struct comedi_device * dev) |
88b12a9a FMH |
1121 | { |
1122 | return dev->private; | |
1123 | } | |
1124 | ||
1125 | /* | |
1126 | * The comedi_driver structure tells the Comedi core module | |
1127 | * which functions to call to configure/deconfigure (attach/detach) | |
1128 | * the board, and also about the kernel module that contains | |
1129 | * the device code. | |
1130 | */ | |
0707bb04 | 1131 | static int attach(struct comedi_device * dev, struct comedi_devconfig * it); |
71b5f4f1 | 1132 | static int detach(struct comedi_device * dev); |
139dfbdf | 1133 | static struct comedi_driver driver_cb_pcidas = { |
88b12a9a FMH |
1134 | driver_name:"cb_pcidas64", |
1135 | module:THIS_MODULE, | |
1136 | attach:attach, | |
1137 | detach:detach, | |
1138 | }; | |
1139 | ||
34c43922 | 1140 | static int ai_rinsn(struct comedi_device * dev, struct comedi_subdevice * s, |
90035c08 | 1141 | struct comedi_insn * insn, unsigned int * data); |
34c43922 | 1142 | static int ai_config_insn(struct comedi_device * dev, struct comedi_subdevice * s, |
90035c08 | 1143 | struct comedi_insn * insn, unsigned int * data); |
34c43922 | 1144 | static int ao_winsn(struct comedi_device * dev, struct comedi_subdevice * s, |
90035c08 | 1145 | struct comedi_insn * insn, unsigned int * data); |
34c43922 | 1146 | static int ao_readback_insn(struct comedi_device * dev, struct comedi_subdevice * s, |
90035c08 | 1147 | struct comedi_insn * insn, unsigned int * data); |
34c43922 BP |
1148 | static int ai_cmd(struct comedi_device * dev, struct comedi_subdevice * s); |
1149 | static int ai_cmdtest(struct comedi_device * dev, struct comedi_subdevice * s, | |
ea6d0d4c | 1150 | struct comedi_cmd * cmd); |
34c43922 BP |
1151 | static int ao_cmd(struct comedi_device * dev, struct comedi_subdevice * s); |
1152 | static int ao_inttrig(struct comedi_device * dev, struct comedi_subdevice * subdev, | |
88b12a9a | 1153 | unsigned int trig_num); |
34c43922 | 1154 | static int ao_cmdtest(struct comedi_device * dev, struct comedi_subdevice * s, |
ea6d0d4c | 1155 | struct comedi_cmd * cmd); |
70265d24 | 1156 | static irqreturn_t handle_interrupt(int irq, void *d); |
34c43922 BP |
1157 | static int ai_cancel(struct comedi_device * dev, struct comedi_subdevice * s); |
1158 | static int ao_cancel(struct comedi_device * dev, struct comedi_subdevice * s); | |
88b12a9a FMH |
1159 | static int dio_callback(int dir, int port, int data, unsigned long arg); |
1160 | static int dio_callback_4020(int dir, int port, int data, unsigned long arg); | |
34c43922 | 1161 | static int di_rbits(struct comedi_device * dev, struct comedi_subdevice * s, |
90035c08 | 1162 | struct comedi_insn * insn, unsigned int * data); |
34c43922 | 1163 | static int do_wbits(struct comedi_device * dev, struct comedi_subdevice * s, |
90035c08 | 1164 | struct comedi_insn * insn, unsigned int * data); |
34c43922 | 1165 | static int dio_60xx_config_insn(struct comedi_device * dev, struct comedi_subdevice * s, |
90035c08 | 1166 | struct comedi_insn * insn, unsigned int * data); |
34c43922 | 1167 | static int dio_60xx_wbits(struct comedi_device * dev, struct comedi_subdevice * s, |
90035c08 | 1168 | struct comedi_insn * insn, unsigned int * data); |
34c43922 | 1169 | static int calib_read_insn(struct comedi_device * dev, struct comedi_subdevice * s, |
90035c08 | 1170 | struct comedi_insn * insn, unsigned int * data); |
34c43922 | 1171 | static int calib_write_insn(struct comedi_device * dev, struct comedi_subdevice * s, |
90035c08 | 1172 | struct comedi_insn * insn, unsigned int * data); |
34c43922 | 1173 | static int ad8402_read_insn(struct comedi_device * dev, struct comedi_subdevice * s, |
90035c08 | 1174 | struct comedi_insn * insn, unsigned int * data); |
71b5f4f1 | 1175 | static void ad8402_write(struct comedi_device * dev, unsigned int channel, |
88b12a9a | 1176 | unsigned int value); |
34c43922 | 1177 | static int ad8402_write_insn(struct comedi_device * dev, struct comedi_subdevice * s, |
90035c08 | 1178 | struct comedi_insn * insn, unsigned int * data); |
34c43922 | 1179 | static int eeprom_read_insn(struct comedi_device * dev, struct comedi_subdevice * s, |
90035c08 | 1180 | struct comedi_insn * insn, unsigned int * data); |
ea6d0d4c | 1181 | static void check_adc_timing(struct comedi_device * dev, struct comedi_cmd * cmd); |
88b12a9a | 1182 | static unsigned int get_divisor(unsigned int ns, unsigned int flags); |
71b5f4f1 | 1183 | static void i2c_write(struct comedi_device * dev, unsigned int address, |
88b12a9a | 1184 | const uint8_t * data, unsigned int length); |
71b5f4f1 | 1185 | static void caldac_write(struct comedi_device * dev, unsigned int channel, |
88b12a9a | 1186 | unsigned int value); |
71b5f4f1 | 1187 | static int caldac_8800_write(struct comedi_device * dev, unsigned int address, |
88b12a9a | 1188 | uint8_t value); |
9ef4dea6 | 1189 | /* static int dac_1590_write(struct comedi_device *dev, unsigned int dac_a, unsigned int dac_b); */ |
71b5f4f1 | 1190 | static int caldac_i2c_write(struct comedi_device * dev, unsigned int caldac_channel, |
88b12a9a | 1191 | unsigned int value); |
71b5f4f1 BP |
1192 | static void abort_dma(struct comedi_device * dev, unsigned int channel); |
1193 | static void disable_plx_interrupts(struct comedi_device * dev); | |
1194 | static int set_ai_fifo_size(struct comedi_device * dev, unsigned int num_samples); | |
1195 | static unsigned int ai_fifo_size(struct comedi_device * dev); | |
1196 | static int set_ai_fifo_segment_length(struct comedi_device * dev, | |
88b12a9a | 1197 | unsigned int num_entries); |
71b5f4f1 BP |
1198 | static void disable_ai_pacing(struct comedi_device * dev); |
1199 | static void disable_ai_interrupts(struct comedi_device * dev); | |
ea6d0d4c | 1200 | static void enable_ai_interrupts(struct comedi_device * dev, const struct comedi_cmd * cmd); |
88b12a9a | 1201 | static unsigned int get_ao_divisor(unsigned int ns, unsigned int flags); |
ea6d0d4c | 1202 | static void load_ao_dma(struct comedi_device * dev, const struct comedi_cmd * cmd); |
88b12a9a FMH |
1203 | |
1204 | COMEDI_PCI_INITCLEANUP(driver_cb_pcidas, pcidas64_pci_table); | |
1205 | ||
71b5f4f1 | 1206 | static unsigned int ai_range_bits_6xxx(const struct comedi_device * dev, |
88b12a9a FMH |
1207 | unsigned int range_index) |
1208 | { | |
1f6325d6 | 1209 | const struct comedi_krange *range = |
88b12a9a FMH |
1210 | &board(dev)->ai_range_table->range[range_index]; |
1211 | unsigned int bits = 0; | |
1212 | ||
1213 | switch (range->max) { | |
1214 | case 10000000: | |
1215 | bits = 0x000; | |
1216 | break; | |
1217 | case 5000000: | |
1218 | bits = 0x100; | |
1219 | break; | |
1220 | case 2000000: | |
1221 | case 2500000: | |
1222 | bits = 0x200; | |
1223 | break; | |
1224 | case 1000000: | |
1225 | case 1250000: | |
1226 | bits = 0x300; | |
1227 | break; | |
1228 | case 500000: | |
1229 | bits = 0x400; | |
1230 | break; | |
1231 | case 200000: | |
1232 | case 250000: | |
1233 | bits = 0x500; | |
1234 | break; | |
1235 | case 100000: | |
1236 | bits = 0x600; | |
1237 | break; | |
1238 | case 50000: | |
1239 | bits = 0x700; | |
1240 | break; | |
1241 | default: | |
1242 | comedi_error(dev, "bug! in ai_range_bits_6xxx"); | |
1243 | break; | |
1244 | } | |
1245 | if (range->min == 0) | |
1246 | bits += 0x900; | |
1247 | return bits; | |
1248 | } | |
1249 | ||
71b5f4f1 | 1250 | static unsigned int hw_revision(const struct comedi_device * dev, |
88b12a9a FMH |
1251 | uint16_t hw_status_bits) |
1252 | { | |
1253 | if (board(dev)->layout == LAYOUT_4020) | |
1254 | return (hw_status_bits >> 13) & 0x7; | |
1255 | ||
1256 | return (hw_status_bits >> 12) & 0xf; | |
1257 | } | |
1258 | ||
71b5f4f1 | 1259 | static void set_dac_range_bits(struct comedi_device * dev, volatile uint16_t * bits, |
88b12a9a FMH |
1260 | unsigned int channel, unsigned int range) |
1261 | { | |
1262 | unsigned int code = board(dev)->ao_range_code[range]; | |
1263 | ||
1264 | if (channel > 1) | |
1265 | comedi_error(dev, "bug! bad channel?"); | |
1266 | if (code & ~0x3) | |
1267 | comedi_error(dev, "bug! bad range code?"); | |
1268 | ||
1269 | *bits &= ~(0x3 << (2 * channel)); | |
1270 | *bits |= code << (2 * channel); | |
1271 | }; | |
1272 | ||
222ab1bc | 1273 | static inline int ao_cmd_is_supported(const struct pcidas64_board * board) |
88b12a9a FMH |
1274 | { |
1275 | return board->ao_nchan && board->layout != LAYOUT_4020; | |
1276 | } | |
1277 | ||
9ef4dea6 | 1278 | /* initialize plx9080 chip */ |
71b5f4f1 | 1279 | static void init_plx9080(struct comedi_device * dev) |
88b12a9a FMH |
1280 | { |
1281 | uint32_t bits; | |
1282 | void *plx_iobase = priv(dev)->plx9080_iobase; | |
1283 | ||
1284 | priv(dev)->plx_control_bits = | |
1285 | readl(priv(dev)->plx9080_iobase + PLX_CONTROL_REG); | |
1286 | ||
9ef4dea6 | 1287 | /* plx9080 dump */ |
88b12a9a FMH |
1288 | DEBUG_PRINT(" plx interrupt status 0x%x\n", |
1289 | readl(plx_iobase + PLX_INTRCS_REG)); | |
1290 | DEBUG_PRINT(" plx id bits 0x%x\n", readl(plx_iobase + PLX_ID_REG)); | |
1291 | DEBUG_PRINT(" plx control reg 0x%x\n", priv(dev)->plx_control_bits); | |
1292 | DEBUG_PRINT(" plx mode/arbitration reg 0x%x\n", | |
1293 | readl(plx_iobase + PLX_MARB_REG)); | |
1294 | DEBUG_PRINT(" plx region0 reg 0x%x\n", | |
1295 | readl(plx_iobase + PLX_REGION0_REG)); | |
1296 | DEBUG_PRINT(" plx region1 reg 0x%x\n", | |
1297 | readl(plx_iobase + PLX_REGION1_REG)); | |
1298 | ||
1299 | DEBUG_PRINT(" plx revision 0x%x\n", | |
1300 | readl(plx_iobase + PLX_REVISION_REG)); | |
1301 | DEBUG_PRINT(" plx dma channel 0 mode 0x%x\n", | |
1302 | readl(plx_iobase + PLX_DMA0_MODE_REG)); | |
1303 | DEBUG_PRINT(" plx dma channel 1 mode 0x%x\n", | |
1304 | readl(plx_iobase + PLX_DMA1_MODE_REG)); | |
1305 | DEBUG_PRINT(" plx dma channel 0 pci address 0x%x\n", | |
1306 | readl(plx_iobase + PLX_DMA0_PCI_ADDRESS_REG)); | |
1307 | DEBUG_PRINT(" plx dma channel 0 local address 0x%x\n", | |
1308 | readl(plx_iobase + PLX_DMA0_LOCAL_ADDRESS_REG)); | |
1309 | DEBUG_PRINT(" plx dma channel 0 transfer size 0x%x\n", | |
1310 | readl(plx_iobase + PLX_DMA0_TRANSFER_SIZE_REG)); | |
1311 | DEBUG_PRINT(" plx dma channel 0 descriptor 0x%x\n", | |
1312 | readl(plx_iobase + PLX_DMA0_DESCRIPTOR_REG)); | |
1313 | DEBUG_PRINT(" plx dma channel 0 command status 0x%x\n", | |
1314 | readb(plx_iobase + PLX_DMA0_CS_REG)); | |
1315 | DEBUG_PRINT(" plx dma channel 0 threshold 0x%x\n", | |
1316 | readl(plx_iobase + PLX_DMA0_THRESHOLD_REG)); | |
1317 | DEBUG_PRINT(" plx bigend 0x%x\n", readl(plx_iobase + PLX_BIGEND_REG)); | |
1318 | ||
1319 | #ifdef __BIG_ENDIAN | |
1320 | bits = BIGEND_DMA0 | BIGEND_DMA1; | |
1321 | #else | |
1322 | bits = 0; | |
1323 | #endif | |
1324 | writel(bits, priv(dev)->plx9080_iobase + PLX_BIGEND_REG); | |
1325 | ||
1326 | disable_plx_interrupts(dev); | |
1327 | ||
1328 | abort_dma(dev, 0); | |
1329 | abort_dma(dev, 1); | |
1330 | ||
9ef4dea6 | 1331 | /* configure dma0 mode */ |
88b12a9a | 1332 | bits = 0; |
9ef4dea6 | 1333 | /* enable ready input, not sure if this is necessary */ |
88b12a9a | 1334 | bits |= PLX_DMA_EN_READYIN_BIT; |
9ef4dea6 | 1335 | /* enable bterm, not sure if this is necessary */ |
88b12a9a | 1336 | bits |= PLX_EN_BTERM_BIT; |
9ef4dea6 | 1337 | /* enable dma chaining */ |
88b12a9a | 1338 | bits |= PLX_EN_CHAIN_BIT; |
9ef4dea6 | 1339 | /* enable interrupt on dma done (probably don't need this, since chain never finishes) */ |
88b12a9a | 1340 | bits |= PLX_EN_DMA_DONE_INTR_BIT; |
9ef4dea6 | 1341 | /* don't increment local address during transfers (we are transferring from a fixed fifo register) */ |
88b12a9a | 1342 | bits |= PLX_LOCAL_ADDR_CONST_BIT; |
9ef4dea6 | 1343 | /* route dma interrupt to pci bus */ |
88b12a9a | 1344 | bits |= PLX_DMA_INTR_PCI_BIT; |
9ef4dea6 | 1345 | /* enable demand mode */ |
88b12a9a | 1346 | bits |= PLX_DEMAND_MODE_BIT; |
9ef4dea6 | 1347 | /* enable local burst mode */ |
88b12a9a | 1348 | bits |= PLX_DMA_LOCAL_BURST_EN_BIT; |
9ef4dea6 | 1349 | /* 4020 uses 32 bit dma */ |
88b12a9a FMH |
1350 | if (board(dev)->layout == LAYOUT_4020) { |
1351 | bits |= PLX_LOCAL_BUS_32_WIDE_BITS; | |
9ef4dea6 | 1352 | } else { /* localspace0 bus is 16 bits wide */ |
88b12a9a FMH |
1353 | bits |= PLX_LOCAL_BUS_16_WIDE_BITS; |
1354 | } | |
1355 | writel(bits, plx_iobase + PLX_DMA1_MODE_REG); | |
1356 | if (ao_cmd_is_supported(board(dev))) | |
1357 | writel(bits, plx_iobase + PLX_DMA0_MODE_REG); | |
1358 | ||
9ef4dea6 | 1359 | /* enable interrupts on plx 9080 */ |
88b12a9a FMH |
1360 | priv(dev)->plx_intcsr_bits |= |
1361 | ICS_AERR | ICS_PERR | ICS_PIE | ICS_PLIE | ICS_PAIE | ICS_LIE | | |
1362 | ICS_DMA0_E | ICS_DMA1_E; | |
1363 | writel(priv(dev)->plx_intcsr_bits, | |
1364 | priv(dev)->plx9080_iobase + PLX_INTRCS_REG); | |
1365 | } | |
1366 | ||
1367 | /* Allocate and initialize the subdevice structures. | |
1368 | */ | |
71b5f4f1 | 1369 | static int setup_subdevices(struct comedi_device * dev) |
88b12a9a | 1370 | { |
34c43922 | 1371 | struct comedi_subdevice *s; |
88b12a9a FMH |
1372 | void *dio_8255_iobase; |
1373 | int i; | |
1374 | ||
1375 | if (alloc_subdevices(dev, 10) < 0) | |
1376 | return -ENOMEM; | |
1377 | ||
1378 | s = dev->subdevices + 0; | |
1379 | /* analog input subdevice */ | |
1380 | dev->read_subdev = s; | |
1381 | s->type = COMEDI_SUBD_AI; | |
1382 | s->subdev_flags = SDF_READABLE | SDF_GROUND | SDF_DITHER | SDF_CMD_READ; | |
1383 | if (board(dev)->layout == LAYOUT_60XX) | |
1384 | s->subdev_flags |= SDF_COMMON | SDF_DIFF; | |
1385 | else if (board(dev)->layout == LAYOUT_64XX) | |
1386 | s->subdev_flags |= SDF_DIFF; | |
1387 | /* XXX Number of inputs in differential mode is ignored */ | |
1388 | s->n_chan = board(dev)->ai_se_chans; | |
1389 | s->len_chanlist = 0x2000; | |
1390 | s->maxdata = (1 << board(dev)->ai_bits) - 1; | |
1391 | s->range_table = board(dev)->ai_range_table; | |
1392 | s->insn_read = ai_rinsn; | |
1393 | s->insn_config = ai_config_insn; | |
1394 | s->do_cmd = ai_cmd; | |
1395 | s->do_cmdtest = ai_cmdtest; | |
1396 | s->cancel = ai_cancel; | |
1397 | if (board(dev)->layout == LAYOUT_4020) { | |
1398 | unsigned int i; | |
1399 | uint8_t data; | |
9ef4dea6 | 1400 | /* set adc to read from inputs (not internal calibration sources) */ |
88b12a9a | 1401 | priv(dev)->i2c_cal_range_bits = adc_src_4020_bits(4); |
9ef4dea6 | 1402 | /* set channels to +-5 volt input ranges */ |
88b12a9a FMH |
1403 | for (i = 0; i < s->n_chan; i++) |
1404 | priv(dev)->i2c_cal_range_bits |= attenuate_bit(i); | |
1405 | data = priv(dev)->i2c_cal_range_bits; | |
1406 | i2c_write(dev, RANGE_CAL_I2C_ADDR, &data, sizeof(data)); | |
1407 | } | |
1408 | ||
1409 | /* analog output subdevice */ | |
1410 | s = dev->subdevices + 1; | |
1411 | if (board(dev)->ao_nchan) { | |
1412 | s->type = COMEDI_SUBD_AO; | |
1413 | s->subdev_flags = | |
1414 | SDF_READABLE | SDF_WRITABLE | SDF_GROUND | | |
1415 | SDF_CMD_WRITE; | |
1416 | s->n_chan = board(dev)->ao_nchan; | |
1417 | s->maxdata = (1 << board(dev)->ao_bits) - 1; | |
1418 | s->range_table = board(dev)->ao_range_table; | |
1419 | s->insn_read = ao_readback_insn; | |
1420 | s->insn_write = ao_winsn; | |
1421 | if (ao_cmd_is_supported(board(dev))) { | |
1422 | dev->write_subdev = s; | |
1423 | s->do_cmdtest = ao_cmdtest; | |
1424 | s->do_cmd = ao_cmd; | |
1425 | s->len_chanlist = board(dev)->ao_nchan; | |
1426 | s->cancel = ao_cancel; | |
1427 | } | |
1428 | } else { | |
1429 | s->type = COMEDI_SUBD_UNUSED; | |
1430 | } | |
1431 | ||
9ef4dea6 | 1432 | /* digital input */ |
88b12a9a FMH |
1433 | s = dev->subdevices + 2; |
1434 | if (board(dev)->layout == LAYOUT_64XX) { | |
1435 | s->type = COMEDI_SUBD_DI; | |
1436 | s->subdev_flags = SDF_READABLE; | |
1437 | s->n_chan = 4; | |
1438 | s->maxdata = 1; | |
1439 | s->range_table = &range_digital; | |
1440 | s->insn_bits = di_rbits; | |
1441 | } else | |
1442 | s->type = COMEDI_SUBD_UNUSED; | |
1443 | ||
9ef4dea6 | 1444 | /* digital output */ |
88b12a9a FMH |
1445 | if (board(dev)->layout == LAYOUT_64XX) { |
1446 | s = dev->subdevices + 3; | |
1447 | s->type = COMEDI_SUBD_DO; | |
1448 | s->subdev_flags = SDF_WRITABLE | SDF_READABLE; | |
1449 | s->n_chan = 4; | |
1450 | s->maxdata = 1; | |
1451 | s->range_table = &range_digital; | |
1452 | s->insn_bits = do_wbits; | |
1453 | } else | |
1454 | s->type = COMEDI_SUBD_UNUSED; | |
1455 | ||
1456 | /* 8255 */ | |
1457 | s = dev->subdevices + 4; | |
1458 | if (board(dev)->has_8255) { | |
1459 | if (board(dev)->layout == LAYOUT_4020) { | |
1460 | dio_8255_iobase = | |
1461 | priv(dev)->main_iobase + I8255_4020_REG; | |
1462 | subdev_8255_init(dev, s, dio_callback_4020, | |
1463 | (unsigned long)dio_8255_iobase); | |
1464 | } else { | |
1465 | dio_8255_iobase = | |
1466 | priv(dev)->dio_counter_iobase + DIO_8255_OFFSET; | |
1467 | subdev_8255_init(dev, s, dio_callback, | |
1468 | (unsigned long)dio_8255_iobase); | |
1469 | } | |
1470 | } else | |
1471 | s->type = COMEDI_SUBD_UNUSED; | |
1472 | ||
9ef4dea6 | 1473 | /* 8 channel dio for 60xx */ |
88b12a9a FMH |
1474 | s = dev->subdevices + 5; |
1475 | if (board(dev)->layout == LAYOUT_60XX) { | |
1476 | s->type = COMEDI_SUBD_DIO; | |
1477 | s->subdev_flags = SDF_WRITABLE | SDF_READABLE; | |
1478 | s->n_chan = 8; | |
1479 | s->maxdata = 1; | |
1480 | s->range_table = &range_digital; | |
1481 | s->insn_config = dio_60xx_config_insn; | |
1482 | s->insn_bits = dio_60xx_wbits; | |
1483 | } else | |
1484 | s->type = COMEDI_SUBD_UNUSED; | |
1485 | ||
9ef4dea6 | 1486 | /* caldac */ |
88b12a9a FMH |
1487 | s = dev->subdevices + 6; |
1488 | s->type = COMEDI_SUBD_CALIB; | |
1489 | s->subdev_flags = SDF_READABLE | SDF_WRITABLE | SDF_INTERNAL; | |
1490 | s->n_chan = 8; | |
1491 | if (board(dev)->layout == LAYOUT_4020) | |
1492 | s->maxdata = 0xfff; | |
1493 | else | |
1494 | s->maxdata = 0xff; | |
1495 | s->insn_read = calib_read_insn; | |
1496 | s->insn_write = calib_write_insn; | |
1497 | for (i = 0; i < s->n_chan; i++) | |
1498 | caldac_write(dev, i, s->maxdata / 2); | |
1499 | ||
9ef4dea6 | 1500 | /* 2 channel ad8402 potentiometer */ |
88b12a9a FMH |
1501 | s = dev->subdevices + 7; |
1502 | if (board(dev)->layout == LAYOUT_64XX) { | |
1503 | s->type = COMEDI_SUBD_CALIB; | |
1504 | s->subdev_flags = SDF_READABLE | SDF_WRITABLE | SDF_INTERNAL; | |
1505 | s->n_chan = 2; | |
1506 | s->insn_read = ad8402_read_insn; | |
1507 | s->insn_write = ad8402_write_insn; | |
1508 | s->maxdata = 0xff; | |
1509 | for (i = 0; i < s->n_chan; i++) | |
1510 | ad8402_write(dev, i, s->maxdata / 2); | |
1511 | } else | |
1512 | s->type = COMEDI_SUBD_UNUSED; | |
1513 | ||
9ef4dea6 | 1514 | /* serial EEPROM, if present */ |
88b12a9a FMH |
1515 | s = dev->subdevices + 8; |
1516 | if (readl(priv(dev)->plx9080_iobase + PLX_CONTROL_REG) & CTL_EECHK) { | |
1517 | s->type = COMEDI_SUBD_MEMORY; | |
1518 | s->subdev_flags = SDF_READABLE | SDF_INTERNAL; | |
1519 | s->n_chan = 128; | |
1520 | s->maxdata = 0xffff; | |
1521 | s->insn_read = eeprom_read_insn; | |
1522 | } else | |
1523 | s->type = COMEDI_SUBD_UNUSED; | |
1524 | ||
9ef4dea6 | 1525 | /* user counter subd XXX */ |
88b12a9a FMH |
1526 | s = dev->subdevices + 9; |
1527 | s->type = COMEDI_SUBD_UNUSED; | |
1528 | ||
1529 | return 0; | |
1530 | } | |
1531 | ||
71b5f4f1 | 1532 | static void disable_plx_interrupts(struct comedi_device * dev) |
88b12a9a FMH |
1533 | { |
1534 | priv(dev)->plx_intcsr_bits = 0; | |
1535 | writel(priv(dev)->plx_intcsr_bits, | |
1536 | priv(dev)->plx9080_iobase + PLX_INTRCS_REG); | |
1537 | } | |
1538 | ||
71b5f4f1 | 1539 | static void init_stc_registers(struct comedi_device * dev) |
88b12a9a FMH |
1540 | { |
1541 | uint16_t bits; | |
1542 | unsigned long flags; | |
1543 | ||
1544 | comedi_spin_lock_irqsave(&dev->spinlock, flags); | |
1545 | ||
9ef4dea6 | 1546 | /* bit should be set for 6025, although docs say boards with <= 16 chans should be cleared XXX */ |
88b12a9a FMH |
1547 | if (1) |
1548 | priv(dev)->adc_control1_bits |= ADC_QUEUE_CONFIG_BIT; | |
1549 | writew(priv(dev)->adc_control1_bits, | |
1550 | priv(dev)->main_iobase + ADC_CONTROL1_REG); | |
1551 | ||
9ef4dea6 | 1552 | /* 6402/16 manual says this register must be initialized to 0xff? */ |
88b12a9a FMH |
1553 | writew(0xff, priv(dev)->main_iobase + ADC_SAMPLE_INTERVAL_UPPER_REG); |
1554 | ||
1555 | bits = SLOW_DAC_BIT | DMA_CH_SELECT_BIT; | |
1556 | if (board(dev)->layout == LAYOUT_4020) | |
1557 | bits |= INTERNAL_CLOCK_4020_BITS; | |
1558 | priv(dev)->hw_config_bits |= bits; | |
1559 | writew(priv(dev)->hw_config_bits, | |
1560 | priv(dev)->main_iobase + HW_CONFIG_REG); | |
1561 | ||
1562 | writew(0, priv(dev)->main_iobase + DAQ_SYNC_REG); | |
1563 | writew(0, priv(dev)->main_iobase + CALIBRATION_REG); | |
1564 | ||
1565 | comedi_spin_unlock_irqrestore(&dev->spinlock, flags); | |
1566 | ||
9ef4dea6 | 1567 | /* set fifos to maximum size */ |
88b12a9a FMH |
1568 | priv(dev)->fifo_size_bits |= DAC_FIFO_BITS; |
1569 | set_ai_fifo_segment_length(dev, | |
1570 | board(dev)->ai_fifo->max_segment_length); | |
1571 | ||
1572 | priv(dev)->dac_control1_bits = DAC_OUTPUT_ENABLE_BIT; | |
1573 | priv(dev)->intr_enable_bits = /* EN_DAC_INTR_SRC_BIT | DAC_INTR_QEMPTY_BITS | */ | |
1574 | EN_DAC_DONE_INTR_BIT | EN_DAC_UNDERRUN_BIT; | |
1575 | writew(priv(dev)->intr_enable_bits, | |
1576 | priv(dev)->main_iobase + INTR_ENABLE_REG); | |
1577 | ||
1578 | disable_ai_pacing(dev); | |
1579 | }; | |
1580 | ||
71b5f4f1 | 1581 | int alloc_and_init_dma_members(struct comedi_device * dev) |
88b12a9a FMH |
1582 | { |
1583 | int i; | |
1584 | ||
9ef4dea6 | 1585 | /* alocate pci dma buffers */ |
88b12a9a FMH |
1586 | for (i = 0; i < ai_dma_ring_count(board(dev)); i++) { |
1587 | priv(dev)->ai_buffer[i] = | |
1588 | pci_alloc_consistent(priv(dev)->hw_dev, DMA_BUFFER_SIZE, | |
1589 | &priv(dev)->ai_buffer_bus_addr[i]); | |
1590 | if (priv(dev)->ai_buffer[i] == NULL) { | |
1591 | return -ENOMEM; | |
1592 | } | |
1593 | } | |
1594 | for (i = 0; i < AO_DMA_RING_COUNT; i++) { | |
1595 | if (ao_cmd_is_supported(board(dev))) { | |
1596 | priv(dev)->ao_buffer[i] = | |
1597 | pci_alloc_consistent(priv(dev)->hw_dev, | |
1598 | DMA_BUFFER_SIZE, | |
1599 | &priv(dev)->ao_buffer_bus_addr[i]); | |
1600 | if (priv(dev)->ao_buffer[i] == NULL) { | |
1601 | return -ENOMEM; | |
1602 | } | |
1603 | } | |
1604 | } | |
9ef4dea6 | 1605 | /* allocate dma descriptors */ |
88b12a9a FMH |
1606 | priv(dev)->ai_dma_desc = |
1607 | pci_alloc_consistent(priv(dev)->hw_dev, | |
1608 | sizeof(struct plx_dma_desc) * ai_dma_ring_count(board(dev)), | |
1609 | &priv(dev)->ai_dma_desc_bus_addr); | |
1610 | if (priv(dev)->ai_dma_desc == NULL) { | |
1611 | return -ENOMEM; | |
1612 | } | |
1613 | DEBUG_PRINT("ai dma descriptors start at bus addr 0x%x\n", | |
1614 | priv(dev)->ai_dma_desc_bus_addr); | |
1615 | if (ao_cmd_is_supported(board(dev))) { | |
1616 | priv(dev)->ao_dma_desc = | |
1617 | pci_alloc_consistent(priv(dev)->hw_dev, | |
1618 | sizeof(struct plx_dma_desc) * AO_DMA_RING_COUNT, | |
1619 | &priv(dev)->ao_dma_desc_bus_addr); | |
1620 | if (priv(dev)->ao_dma_desc == NULL) { | |
1621 | return -ENOMEM; | |
1622 | } | |
1623 | DEBUG_PRINT("ao dma descriptors start at bus addr 0x%x\n", | |
1624 | priv(dev)->ao_dma_desc_bus_addr); | |
1625 | } | |
9ef4dea6 | 1626 | /* initialize dma descriptors */ |
88b12a9a FMH |
1627 | for (i = 0; i < ai_dma_ring_count(board(dev)); i++) { |
1628 | priv(dev)->ai_dma_desc[i].pci_start_addr = | |
1629 | cpu_to_le32(priv(dev)->ai_buffer_bus_addr[i]); | |
1630 | if (board(dev)->layout == LAYOUT_4020) | |
1631 | priv(dev)->ai_dma_desc[i].local_start_addr = | |
1632 | cpu_to_le32(priv(dev)->local1_iobase + | |
1633 | ADC_FIFO_REG); | |
1634 | else | |
1635 | priv(dev)->ai_dma_desc[i].local_start_addr = | |
1636 | cpu_to_le32(priv(dev)->local0_iobase + | |
1637 | ADC_FIFO_REG); | |
1638 | priv(dev)->ai_dma_desc[i].transfer_size = cpu_to_le32(0); | |
1639 | priv(dev)->ai_dma_desc[i].next = | |
1640 | cpu_to_le32((priv(dev)->ai_dma_desc_bus_addr + ((i + | |
1641 | 1) % | |
1642 | ai_dma_ring_count(board(dev))) * | |
1643 | sizeof(priv(dev)-> | |
1644 | ai_dma_desc[0])) | PLX_DESC_IN_PCI_BIT | | |
1645 | PLX_INTR_TERM_COUNT | PLX_XFER_LOCAL_TO_PCI); | |
1646 | } | |
1647 | if (ao_cmd_is_supported(board(dev))) { | |
1648 | for (i = 0; i < AO_DMA_RING_COUNT; i++) { | |
1649 | priv(dev)->ao_dma_desc[i].pci_start_addr = | |
1650 | cpu_to_le32(priv(dev)->ao_buffer_bus_addr[i]); | |
1651 | priv(dev)->ao_dma_desc[i].local_start_addr = | |
1652 | cpu_to_le32(priv(dev)->local0_iobase + | |
1653 | DAC_FIFO_REG); | |
1654 | priv(dev)->ao_dma_desc[i].transfer_size = | |
1655 | cpu_to_le32(0); | |
1656 | priv(dev)->ao_dma_desc[i].next = | |
1657 | cpu_to_le32((priv(dev)->ao_dma_desc_bus_addr + | |
1658 | ((i + 1) % (AO_DMA_RING_COUNT)) * | |
1659 | sizeof(priv(dev)-> | |
1660 | ao_dma_desc[0])) | | |
1661 | PLX_DESC_IN_PCI_BIT | PLX_INTR_TERM_COUNT); | |
1662 | } | |
1663 | } | |
1664 | return 0; | |
1665 | } | |
1666 | ||
71b5f4f1 | 1667 | static inline void warn_external_queue(struct comedi_device * dev) |
88b12a9a FMH |
1668 | { |
1669 | comedi_error(dev, | |
1670 | "AO command and AI external channel queue cannot be used simultaneously."); | |
1671 | comedi_error(dev, | |
1672 | "Use internal AI channel queue (channels must be consecutive and use same range/aref)"); | |
1673 | } | |
1674 | ||
1675 | /* | |
1676 | * Attach is called by the Comedi core to configure the driver | |
1677 | * for a particular board. | |
1678 | */ | |
0707bb04 | 1679 | static int attach(struct comedi_device *dev, struct comedi_devconfig *it) |
88b12a9a FMH |
1680 | { |
1681 | struct pci_dev *pcidev; | |
1682 | int index; | |
1683 | uint32_t local_range, local_decode; | |
1684 | int retval; | |
1685 | ||
1686 | printk("comedi%d: cb_pcidas64\n", dev->minor); | |
1687 | ||
1688 | /* | |
1689 | * Allocate the private structure area. | |
1690 | */ | |
450032a3 | 1691 | if (alloc_private(dev, sizeof(struct pcidas64_private)) < 0) |
88b12a9a FMH |
1692 | return -ENOMEM; |
1693 | ||
1694 | /* | |
1695 | * Probe the device to determine what device in the series it is. | |
1696 | */ | |
1697 | ||
1698 | for (pcidev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, NULL); | |
1699 | pcidev != NULL; | |
1700 | pcidev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, pcidev)) { | |
9ef4dea6 | 1701 | /* is it not a computer boards card? */ |
88b12a9a FMH |
1702 | if (pcidev->vendor != PCI_VENDOR_ID_COMPUTERBOARDS) |
1703 | continue; | |
9ef4dea6 | 1704 | /* loop through cards supported by this driver */ |
88b12a9a FMH |
1705 | for (index = 0; index < num_boards(); index++) { |
1706 | if (pcidas64_boards[index].device_id != pcidev->device) | |
1707 | continue; | |
9ef4dea6 | 1708 | /* was a particular bus/slot requested? */ |
88b12a9a | 1709 | if (it->options[0] || it->options[1]) { |
9ef4dea6 | 1710 | /* are we on the wrong bus/slot? */ |
88b12a9a FMH |
1711 | if (pcidev->bus->number != it->options[0] || |
1712 | PCI_SLOT(pcidev->devfn) != | |
1713 | it->options[1]) { | |
1714 | continue; | |
1715 | } | |
1716 | } | |
1717 | priv(dev)->hw_dev = pcidev; | |
1718 | dev->board_ptr = pcidas64_boards + index; | |
1719 | break; | |
1720 | } | |
1721 | if (dev->board_ptr) | |
1722 | break; | |
1723 | } | |
1724 | ||
1725 | if (dev->board_ptr == NULL) { | |
1726 | printk("No supported ComputerBoards/MeasurementComputing card found\n"); | |
1727 | return -EIO; | |
1728 | } | |
1729 | ||
1730 | printk("Found %s on bus %i, slot %i\n", board(dev)->name, | |
1731 | pcidev->bus->number, PCI_SLOT(pcidev->devfn)); | |
1732 | ||
1733 | if (comedi_pci_enable(pcidev, driver_cb_pcidas.driver_name)) { | |
1734 | printk(KERN_WARNING | |
1735 | " failed to enable PCI device and request regions\n"); | |
1736 | return -EIO; | |
1737 | } | |
1738 | pci_set_master(pcidev); | |
1739 | ||
9ef4dea6 | 1740 | /* Initialize dev->board_name */ |
88b12a9a FMH |
1741 | dev->board_name = board(dev)->name; |
1742 | ||
1743 | priv(dev)->plx9080_phys_iobase = | |
1744 | pci_resource_start(pcidev, PLX9080_BADDRINDEX); | |
1745 | priv(dev)->main_phys_iobase = | |
1746 | pci_resource_start(pcidev, MAIN_BADDRINDEX); | |
1747 | priv(dev)->dio_counter_phys_iobase = | |
1748 | pci_resource_start(pcidev, DIO_COUNTER_BADDRINDEX); | |
1749 | ||
9ef4dea6 | 1750 | /* remap, won't work with 2.0 kernels but who cares */ |
88b12a9a FMH |
1751 | priv(dev)->plx9080_iobase = ioremap(priv(dev)->plx9080_phys_iobase, |
1752 | pci_resource_len(pcidev, PLX9080_BADDRINDEX)); | |
1753 | priv(dev)->main_iobase = ioremap(priv(dev)->main_phys_iobase, | |
1754 | pci_resource_len(pcidev, MAIN_BADDRINDEX)); | |
1755 | priv(dev)->dio_counter_iobase = | |
1756 | ioremap(priv(dev)->dio_counter_phys_iobase, | |
1757 | pci_resource_len(pcidev, DIO_COUNTER_BADDRINDEX)); | |
1758 | ||
1759 | if (!priv(dev)->plx9080_iobase || !priv(dev)->main_iobase | |
1760 | || !priv(dev)->dio_counter_iobase) { | |
1761 | printk(" failed to remap io memory\n"); | |
1762 | return -ENOMEM; | |
1763 | } | |
1764 | ||
1765 | DEBUG_PRINT(" plx9080 remapped to 0x%p\n", priv(dev)->plx9080_iobase); | |
1766 | DEBUG_PRINT(" main remapped to 0x%p\n", priv(dev)->main_iobase); | |
1767 | DEBUG_PRINT(" diocounter remapped to 0x%p\n", | |
1768 | priv(dev)->dio_counter_iobase); | |
1769 | ||
9ef4dea6 | 1770 | /* figure out what local addresses are */ |
88b12a9a FMH |
1771 | local_range = |
1772 | readl(priv(dev)->plx9080_iobase + | |
1773 | PLX_LAS0RNG_REG) & LRNG_MEM_MASK; | |
1774 | local_decode = | |
1775 | readl(priv(dev)->plx9080_iobase + | |
1776 | PLX_LAS0MAP_REG) & local_range & LMAP_MEM_MASK; | |
1777 | priv(dev)->local0_iobase = | |
1778 | ((uint32_t) priv(dev)-> | |
1779 | main_phys_iobase & ~local_range) | local_decode; | |
1780 | local_range = | |
1781 | readl(priv(dev)->plx9080_iobase + | |
1782 | PLX_LAS1RNG_REG) & LRNG_MEM_MASK; | |
1783 | local_decode = | |
1784 | readl(priv(dev)->plx9080_iobase + | |
1785 | PLX_LAS1MAP_REG) & local_range & LMAP_MEM_MASK; | |
1786 | priv(dev)->local1_iobase = | |
1787 | ((uint32_t) priv(dev)-> | |
1788 | dio_counter_phys_iobase & ~local_range) | local_decode; | |
1789 | ||
1790 | DEBUG_PRINT(" local 0 io addr 0x%x\n", priv(dev)->local0_iobase); | |
1791 | DEBUG_PRINT(" local 1 io addr 0x%x\n", priv(dev)->local1_iobase); | |
1792 | ||
1793 | retval = alloc_and_init_dma_members(dev); | |
1794 | if (retval < 0) | |
1795 | return retval; | |
1796 | ||
1797 | priv(dev)->hw_revision = | |
1798 | hw_revision(dev, readw(priv(dev)->main_iobase + HW_STATUS_REG)); | |
1799 | printk(" stc hardware revision %i\n", priv(dev)->hw_revision); | |
1800 | init_plx9080(dev); | |
1801 | init_stc_registers(dev); | |
9ef4dea6 | 1802 | /* get irq */ |
88b12a9a FMH |
1803 | if (comedi_request_irq(pcidev->irq, handle_interrupt, IRQF_SHARED, |
1804 | "cb_pcidas64", dev)) { | |
1805 | printk(" unable to allocate irq %u\n", pcidev->irq); | |
1806 | return -EINVAL; | |
1807 | } | |
1808 | dev->irq = pcidev->irq; | |
1809 | printk(" irq %u\n", dev->irq); | |
1810 | ||
1811 | retval = setup_subdevices(dev); | |
1812 | if (retval < 0) { | |
1813 | return retval; | |
1814 | } | |
1815 | ||
1816 | return 0; | |
1817 | } | |
1818 | ||
1819 | /* | |
1820 | * _detach is called to deconfigure a device. It should deallocate | |
1821 | * resources. | |
1822 | * This function is also called when _attach() fails, so it should be | |
1823 | * careful not to release resources that were not necessarily | |
1824 | * allocated by _attach(). dev->private and dev->subdevices are | |
1825 | * deallocated automatically by the core. | |
1826 | */ | |
71b5f4f1 | 1827 | static int detach(struct comedi_device * dev) |
88b12a9a FMH |
1828 | { |
1829 | unsigned int i; | |
1830 | ||
1831 | printk("comedi%d: cb_pcidas: remove\n", dev->minor); | |
1832 | ||
1833 | if (dev->irq) | |
1834 | comedi_free_irq(dev->irq, dev); | |
1835 | if (priv(dev)) { | |
1836 | if (priv(dev)->hw_dev) { | |
1837 | if (priv(dev)->plx9080_iobase) { | |
1838 | disable_plx_interrupts(dev); | |
1839 | iounmap((void *)priv(dev)->plx9080_iobase); | |
1840 | } | |
1841 | if (priv(dev)->main_iobase) | |
1842 | iounmap((void *)priv(dev)->main_iobase); | |
1843 | if (priv(dev)->dio_counter_iobase) | |
1844 | iounmap((void *)priv(dev)->dio_counter_iobase); | |
9ef4dea6 | 1845 | /* free pci dma buffers */ |
88b12a9a FMH |
1846 | for (i = 0; i < ai_dma_ring_count(board(dev)); i++) { |
1847 | if (priv(dev)->ai_buffer[i]) | |
1848 | pci_free_consistent(priv(dev)->hw_dev, | |
1849 | DMA_BUFFER_SIZE, | |
1850 | priv(dev)->ai_buffer[i], | |
1851 | priv(dev)-> | |
1852 | ai_buffer_bus_addr[i]); | |
1853 | } | |
1854 | for (i = 0; i < AO_DMA_RING_COUNT; i++) { | |
1855 | if (priv(dev)->ao_buffer[i]) | |
1856 | pci_free_consistent(priv(dev)->hw_dev, | |
1857 | DMA_BUFFER_SIZE, | |
1858 | priv(dev)->ao_buffer[i], | |
1859 | priv(dev)-> | |
1860 | ao_buffer_bus_addr[i]); | |
1861 | } | |
9ef4dea6 | 1862 | /* free dma descriptors */ |
88b12a9a FMH |
1863 | if (priv(dev)->ai_dma_desc) |
1864 | pci_free_consistent(priv(dev)->hw_dev, | |
1865 | sizeof(struct plx_dma_desc) * | |
1866 | ai_dma_ring_count(board(dev)), | |
1867 | priv(dev)->ai_dma_desc, | |
1868 | priv(dev)->ai_dma_desc_bus_addr); | |
1869 | if (priv(dev)->ao_dma_desc) | |
1870 | pci_free_consistent(priv(dev)->hw_dev, | |
1871 | sizeof(struct plx_dma_desc) * | |
1872 | AO_DMA_RING_COUNT, | |
1873 | priv(dev)->ao_dma_desc, | |
1874 | priv(dev)->ao_dma_desc_bus_addr); | |
1875 | if (priv(dev)->main_phys_iobase) { | |
1876 | comedi_pci_disable(priv(dev)->hw_dev); | |
1877 | } | |
1878 | pci_dev_put(priv(dev)->hw_dev); | |
1879 | } | |
1880 | } | |
1881 | if (dev->subdevices) | |
1882 | subdev_8255_cleanup(dev, dev->subdevices + 4); | |
1883 | ||
1884 | return 0; | |
1885 | } | |
1886 | ||
34c43922 | 1887 | static int ai_rinsn(struct comedi_device * dev, struct comedi_subdevice * s, |
90035c08 | 1888 | struct comedi_insn * insn, unsigned int * data) |
88b12a9a FMH |
1889 | { |
1890 | unsigned int bits = 0, n, i; | |
1891 | unsigned int channel, range, aref; | |
1892 | unsigned long flags; | |
1893 | static const int timeout = 100; | |
1894 | ||
1895 | DEBUG_PRINT("chanspec 0x%x\n", insn->chanspec); | |
1896 | channel = CR_CHAN(insn->chanspec); | |
1897 | range = CR_RANGE(insn->chanspec); | |
1898 | aref = CR_AREF(insn->chanspec); | |
1899 | ||
9ef4dea6 BP |
1900 | /* disable card's analog input interrupt sources and pacing */ |
1901 | /* 4020 generates dac done interrupts even though they are disabled */ | |
88b12a9a FMH |
1902 | disable_ai_pacing(dev); |
1903 | ||
1904 | comedi_spin_lock_irqsave(&dev->spinlock, flags); | |
1905 | if (insn->chanspec & CR_ALT_FILTER) | |
1906 | priv(dev)->adc_control1_bits |= ADC_DITHER_BIT; | |
1907 | else | |
1908 | priv(dev)->adc_control1_bits &= ~ADC_DITHER_BIT; | |
1909 | writew(priv(dev)->adc_control1_bits, | |
1910 | priv(dev)->main_iobase + ADC_CONTROL1_REG); | |
1911 | comedi_spin_unlock_irqrestore(&dev->spinlock, flags); | |
1912 | ||
1913 | if (board(dev)->layout != LAYOUT_4020) { | |
9ef4dea6 | 1914 | /* use internal queue */ |
88b12a9a FMH |
1915 | priv(dev)->hw_config_bits &= ~EXT_QUEUE_BIT; |
1916 | writew(priv(dev)->hw_config_bits, | |
1917 | priv(dev)->main_iobase + HW_CONFIG_REG); | |
1918 | ||
9ef4dea6 | 1919 | /* ALT_SOURCE is internal calibration reference */ |
88b12a9a FMH |
1920 | if (insn->chanspec & CR_ALT_SOURCE) { |
1921 | unsigned int cal_en_bit; | |
1922 | ||
1923 | DEBUG_PRINT("reading calibration source\n"); | |
1924 | if (board(dev)->layout == LAYOUT_60XX) | |
1925 | cal_en_bit = CAL_EN_60XX_BIT; | |
1926 | else | |
1927 | cal_en_bit = CAL_EN_64XX_BIT; | |
9ef4dea6 | 1928 | /* select internal reference source to connect to channel 0 */ |
88b12a9a FMH |
1929 | writew(cal_en_bit | adc_src_bits(priv(dev)-> |
1930 | calibration_source), | |
1931 | priv(dev)->main_iobase + CALIBRATION_REG); | |
1932 | } else { | |
9ef4dea6 | 1933 | /* make sure internal calibration source is turned off */ |
88b12a9a FMH |
1934 | writew(0, priv(dev)->main_iobase + CALIBRATION_REG); |
1935 | } | |
9ef4dea6 | 1936 | /* load internal queue */ |
88b12a9a | 1937 | bits = 0; |
9ef4dea6 | 1938 | /* set gain */ |
88b12a9a | 1939 | bits |= ai_range_bits_6xxx(dev, CR_RANGE(insn->chanspec)); |
9ef4dea6 | 1940 | /* set single-ended / differential */ |
88b12a9a FMH |
1941 | bits |= se_diff_bit_6xxx(dev, aref == AREF_DIFF); |
1942 | if (aref == AREF_COMMON) | |
1943 | bits |= ADC_COMMON_BIT; | |
1944 | bits |= adc_chan_bits(channel); | |
9ef4dea6 | 1945 | /* set stop channel */ |
88b12a9a FMH |
1946 | writew(adc_chan_bits(channel), |
1947 | priv(dev)->main_iobase + ADC_QUEUE_HIGH_REG); | |
9ef4dea6 | 1948 | /* set start channel, and rest of settings */ |
88b12a9a FMH |
1949 | writew(bits, priv(dev)->main_iobase + ADC_QUEUE_LOAD_REG); |
1950 | } else { | |
1951 | uint8_t old_cal_range_bits = priv(dev)->i2c_cal_range_bits; | |
1952 | ||
1953 | priv(dev)->i2c_cal_range_bits &= ~ADC_SRC_4020_MASK; | |
1954 | if (insn->chanspec & CR_ALT_SOURCE) { | |
1955 | DEBUG_PRINT("reading calibration source\n"); | |
1956 | priv(dev)->i2c_cal_range_bits |= | |
1957 | adc_src_4020_bits(priv(dev)-> | |
1958 | calibration_source); | |
9ef4dea6 | 1959 | } else { /* select BNC inputs */ |
88b12a9a FMH |
1960 | priv(dev)->i2c_cal_range_bits |= adc_src_4020_bits(4); |
1961 | } | |
9ef4dea6 | 1962 | /* select range */ |
88b12a9a FMH |
1963 | if (range == 0) |
1964 | priv(dev)->i2c_cal_range_bits |= attenuate_bit(channel); | |
1965 | else | |
1966 | priv(dev)->i2c_cal_range_bits &= | |
1967 | ~attenuate_bit(channel); | |
9ef4dea6 | 1968 | /* update calibration/range i2c register only if necessary, as it is very slow */ |
88b12a9a FMH |
1969 | if (old_cal_range_bits != priv(dev)->i2c_cal_range_bits) { |
1970 | uint8_t i2c_data = priv(dev)->i2c_cal_range_bits; | |
1971 | i2c_write(dev, RANGE_CAL_I2C_ADDR, &i2c_data, | |
1972 | sizeof(i2c_data)); | |
1973 | } | |
1974 | ||
1975 | /* 4020 manual asks that sample interval register to be set before writing to convert register. | |
1976 | * Using somewhat arbitrary setting of 4 master clock ticks = 0.1 usec */ | |
1977 | writew(0, | |
1978 | priv(dev)->main_iobase + ADC_SAMPLE_INTERVAL_UPPER_REG); | |
1979 | writew(2, | |
1980 | priv(dev)->main_iobase + ADC_SAMPLE_INTERVAL_LOWER_REG); | |
1981 | } | |
1982 | ||
1983 | for (n = 0; n < insn->n; n++) { | |
1984 | ||
9ef4dea6 | 1985 | /* clear adc buffer (inside loop for 4020 sake) */ |
88b12a9a FMH |
1986 | writew(0, priv(dev)->main_iobase + ADC_BUFFER_CLEAR_REG); |
1987 | ||
1988 | /* trigger conversion, bits sent only matter for 4020 */ | |
1989 | writew(adc_convert_chan_4020_bits(CR_CHAN(insn->chanspec)), | |
1990 | priv(dev)->main_iobase + ADC_CONVERT_REG); | |
1991 | ||
9ef4dea6 | 1992 | /* wait for data */ |
88b12a9a FMH |
1993 | for (i = 0; i < timeout; i++) { |
1994 | bits = readw(priv(dev)->main_iobase + HW_STATUS_REG); | |
1995 | DEBUG_PRINT(" pipe bits 0x%x\n", pipe_full_bits(bits)); | |
1996 | if (board(dev)->layout == LAYOUT_4020) { | |
1997 | if (readw(priv(dev)->main_iobase + | |
1998 | ADC_WRITE_PNTR_REG)) | |
1999 | break; | |
2000 | } else { | |
2001 | if (pipe_full_bits(bits)) | |
2002 | break; | |
2003 | } | |
2004 | comedi_udelay(1); | |
2005 | } | |
2006 | DEBUG_PRINT(" looped %i times waiting for data\n", i); | |
2007 | if (i == timeout) { | |
2008 | comedi_error(dev, " analog input read insn timed out"); | |
2009 | rt_printk(" status 0x%x\n", bits); | |
2010 | return -ETIME; | |
2011 | } | |
2012 | if (board(dev)->layout == LAYOUT_4020) | |
2013 | data[n] = | |
2014 | readl(priv(dev)->dio_counter_iobase + | |
2015 | ADC_FIFO_REG) & 0xffff; | |
2016 | else | |
2017 | data[n] = | |
2018 | readw(priv(dev)->main_iobase + PIPE1_READ_REG); | |
2019 | } | |
2020 | ||
2021 | return n; | |
2022 | } | |
2023 | ||
71b5f4f1 | 2024 | static int ai_config_calibration_source(struct comedi_device * dev, unsigned int * data) |
88b12a9a | 2025 | { |
790c5541 | 2026 | unsigned int source = data[1]; |
88b12a9a FMH |
2027 | int num_calibration_sources; |
2028 | ||
2029 | if (board(dev)->layout == LAYOUT_60XX) | |
2030 | num_calibration_sources = 16; | |
2031 | else | |
2032 | num_calibration_sources = 8; | |
2033 | if (source >= num_calibration_sources) { | |
2034 | printk("invalid calibration source: %i\n", source); | |
2035 | return -EINVAL; | |
2036 | } | |
2037 | ||
2038 | DEBUG_PRINT("setting calibration source to %i\n", source); | |
2039 | priv(dev)->calibration_source = source; | |
2040 | ||
2041 | return 2; | |
2042 | } | |
2043 | ||
71b5f4f1 | 2044 | static int ai_config_block_size(struct comedi_device * dev, unsigned int * data) |
88b12a9a FMH |
2045 | { |
2046 | int fifo_size; | |
675935dd | 2047 | const struct hw_fifo_info *const fifo = board(dev)->ai_fifo; |
88b12a9a FMH |
2048 | unsigned int block_size, requested_block_size; |
2049 | int retval; | |
2050 | ||
2051 | requested_block_size = data[1]; | |
2052 | ||
2053 | if (requested_block_size) { | |
2054 | fifo_size = | |
2055 | requested_block_size * fifo->num_segments / | |
2056 | bytes_in_sample; | |
2057 | ||
2058 | retval = set_ai_fifo_size(dev, fifo_size); | |
2059 | if (retval < 0) | |
2060 | return retval; | |
2061 | ||
2062 | } | |
2063 | ||
2064 | block_size = ai_fifo_size(dev) / fifo->num_segments * bytes_in_sample; | |
2065 | ||
2066 | data[1] = block_size; | |
2067 | ||
2068 | return 2; | |
2069 | } | |
2070 | ||
71b5f4f1 | 2071 | static int ai_config_master_clock_4020(struct comedi_device * dev, unsigned int * data) |
88b12a9a FMH |
2072 | { |
2073 | unsigned int divisor = data[4]; | |
2074 | int retval = 0; | |
2075 | ||
2076 | if (divisor < 2) { | |
2077 | divisor = 2; | |
2078 | retval = -EAGAIN; | |
2079 | } | |
2080 | ||
2081 | switch (data[1]) { | |
2082 | case COMEDI_EV_SCAN_BEGIN: | |
2083 | priv(dev)->ext_clock.divisor = divisor; | |
2084 | priv(dev)->ext_clock.chanspec = data[2]; | |
2085 | break; | |
2086 | default: | |
2087 | return -EINVAL; | |
2088 | break; | |
2089 | } | |
2090 | ||
2091 | data[4] = divisor; | |
2092 | ||
2093 | return retval ? retval : 5; | |
2094 | } | |
2095 | ||
9ef4dea6 | 2096 | /* XXX could add support for 60xx series */ |
71b5f4f1 | 2097 | static int ai_config_master_clock(struct comedi_device * dev, unsigned int * data) |
88b12a9a FMH |
2098 | { |
2099 | ||
2100 | switch (board(dev)->layout) { | |
2101 | case LAYOUT_4020: | |
2102 | return ai_config_master_clock_4020(dev, data); | |
2103 | break; | |
2104 | default: | |
2105 | return -EINVAL; | |
2106 | break; | |
2107 | } | |
2108 | ||
2109 | return -EINVAL; | |
2110 | } | |
2111 | ||
34c43922 | 2112 | static int ai_config_insn(struct comedi_device * dev, struct comedi_subdevice * s, |
90035c08 | 2113 | struct comedi_insn * insn, unsigned int * data) |
88b12a9a FMH |
2114 | { |
2115 | int id = data[0]; | |
2116 | ||
2117 | switch (id) { | |
2118 | case INSN_CONFIG_ALT_SOURCE: | |
2119 | return ai_config_calibration_source(dev, data); | |
2120 | break; | |
2121 | case INSN_CONFIG_BLOCK_SIZE: | |
2122 | return ai_config_block_size(dev, data); | |
2123 | break; | |
2124 | case INSN_CONFIG_TIMER_1: | |
2125 | return ai_config_master_clock(dev, data); | |
2126 | break; | |
2127 | default: | |
2128 | return -EINVAL; | |
2129 | break; | |
2130 | } | |
2131 | return -EINVAL; | |
2132 | } | |
2133 | ||
34c43922 | 2134 | static int ai_cmdtest(struct comedi_device * dev, struct comedi_subdevice * s, |
ea6d0d4c | 2135 | struct comedi_cmd * cmd) |
88b12a9a FMH |
2136 | { |
2137 | int err = 0; | |
2138 | int tmp; | |
2139 | unsigned int tmp_arg, tmp_arg2; | |
2140 | int i; | |
2141 | int aref; | |
2142 | unsigned int triggers; | |
2143 | ||
2144 | /* step 1: make sure trigger sources are trivially valid */ | |
2145 | ||
2146 | tmp = cmd->start_src; | |
2147 | cmd->start_src &= TRIG_NOW | TRIG_EXT; | |
2148 | if (!cmd->start_src || tmp != cmd->start_src) | |
2149 | err++; | |
2150 | ||
2151 | tmp = cmd->scan_begin_src; | |
2152 | triggers = TRIG_TIMER; | |
2153 | if (board(dev)->layout == LAYOUT_4020) | |
2154 | triggers |= TRIG_OTHER; | |
2155 | else | |
2156 | triggers |= TRIG_FOLLOW; | |
2157 | cmd->scan_begin_src &= triggers; | |
2158 | if (!cmd->scan_begin_src || tmp != cmd->scan_begin_src) | |
2159 | err++; | |
2160 | ||
2161 | tmp = cmd->convert_src; | |
2162 | triggers = TRIG_TIMER; | |
2163 | if (board(dev)->layout == LAYOUT_4020) | |
2164 | triggers |= TRIG_NOW; | |
2165 | else | |
2166 | triggers |= TRIG_EXT; | |
2167 | cmd->convert_src &= triggers; | |
2168 | if (!cmd->convert_src || tmp != cmd->convert_src) | |
2169 | err++; | |
2170 | ||
2171 | tmp = cmd->scan_end_src; | |
2172 | cmd->scan_end_src &= TRIG_COUNT; | |
2173 | if (!cmd->scan_end_src || tmp != cmd->scan_end_src) | |
2174 | err++; | |
2175 | ||
2176 | tmp = cmd->stop_src; | |
2177 | cmd->stop_src &= TRIG_COUNT | TRIG_EXT | TRIG_NONE; | |
2178 | if (!cmd->stop_src || tmp != cmd->stop_src) | |
2179 | err++; | |
2180 | ||
2181 | if (err) | |
2182 | return 1; | |
2183 | ||
2184 | /* step 2: make sure trigger sources are unique and mutually compatible */ | |
2185 | ||
9ef4dea6 | 2186 | /* uniqueness check */ |
88b12a9a FMH |
2187 | if (cmd->start_src != TRIG_NOW && cmd->start_src != TRIG_EXT) |
2188 | err++; | |
2189 | if (cmd->scan_begin_src != TRIG_TIMER && | |
2190 | cmd->scan_begin_src != TRIG_OTHER && | |
2191 | cmd->scan_begin_src != TRIG_FOLLOW) | |
2192 | err++; | |
2193 | if (cmd->convert_src != TRIG_TIMER && | |
2194 | cmd->convert_src != TRIG_EXT && cmd->convert_src != TRIG_NOW) | |
2195 | err++; | |
2196 | if (cmd->stop_src != TRIG_COUNT && | |
2197 | cmd->stop_src != TRIG_NONE && cmd->stop_src != TRIG_EXT) | |
2198 | err++; | |
2199 | ||
9ef4dea6 | 2200 | /* compatibility check */ |
88b12a9a FMH |
2201 | if (cmd->convert_src == TRIG_EXT && cmd->scan_begin_src == TRIG_TIMER) |
2202 | err++; | |
2203 | if (cmd->stop_src != TRIG_COUNT && | |
2204 | cmd->stop_src != TRIG_NONE && cmd->stop_src != TRIG_EXT) | |
2205 | err++; | |
2206 | ||
2207 | if (err) | |
2208 | return 2; | |
2209 | ||
2210 | /* step 3: make sure arguments are trivially compatible */ | |
2211 | ||
2212 | if (cmd->convert_src == TRIG_TIMER) { | |
2213 | if (board(dev)->layout == LAYOUT_4020) { | |
2214 | if (cmd->convert_arg) { | |
2215 | cmd->convert_arg = 0; | |
2216 | err++; | |
2217 | } | |
2218 | } else { | |
2219 | if (cmd->convert_arg < board(dev)->ai_speed) { | |
2220 | cmd->convert_arg = board(dev)->ai_speed; | |
2221 | err++; | |
2222 | } | |
2223 | if (cmd->scan_begin_src == TRIG_TIMER) { | |
9ef4dea6 | 2224 | /* if scans are timed faster than conversion rate allows */ |
88b12a9a FMH |
2225 | if (cmd->convert_arg * cmd->chanlist_len > |
2226 | cmd->scan_begin_arg) { | |
2227 | cmd->scan_begin_arg = | |
2228 | cmd->convert_arg * | |
2229 | cmd->chanlist_len; | |
2230 | err++; | |
2231 | } | |
2232 | } | |
2233 | } | |
2234 | } | |
2235 | ||
2236 | if (!cmd->chanlist_len) { | |
2237 | cmd->chanlist_len = 1; | |
2238 | err++; | |
2239 | } | |
2240 | if (cmd->scan_end_arg != cmd->chanlist_len) { | |
2241 | cmd->scan_end_arg = cmd->chanlist_len; | |
2242 | err++; | |
2243 | } | |
2244 | ||
2245 | switch (cmd->stop_src) { | |
2246 | case TRIG_EXT: | |
2247 | break; | |
2248 | case TRIG_COUNT: | |
2249 | if (!cmd->stop_arg) { | |
2250 | cmd->stop_arg = 1; | |
2251 | err++; | |
2252 | } | |
2253 | break; | |
2254 | case TRIG_NONE: | |
2255 | if (cmd->stop_arg != 0) { | |
2256 | cmd->stop_arg = 0; | |
2257 | err++; | |
2258 | } | |
2259 | break; | |
2260 | default: | |
2261 | break; | |
2262 | } | |
2263 | ||
2264 | if (err) | |
2265 | return 3; | |
2266 | ||
2267 | /* step 4: fix up any arguments */ | |
2268 | ||
2269 | if (cmd->convert_src == TRIG_TIMER) { | |
2270 | tmp_arg = cmd->convert_arg; | |
2271 | tmp_arg2 = cmd->scan_begin_arg; | |
2272 | check_adc_timing(dev, cmd); | |
2273 | if (tmp_arg != cmd->convert_arg) | |
2274 | err++; | |
2275 | if (tmp_arg2 != cmd->scan_begin_arg) | |
2276 | err++; | |
2277 | } | |
2278 | ||
2279 | if (err) | |
2280 | return 4; | |
2281 | ||
9ef4dea6 | 2282 | /* make sure user is doesn't change analog reference mid chanlist */ |
88b12a9a FMH |
2283 | if (cmd->chanlist) { |
2284 | aref = CR_AREF(cmd->chanlist[0]); | |
2285 | for (i = 1; i < cmd->chanlist_len; i++) { | |
2286 | if (aref != CR_AREF(cmd->chanlist[i])) { | |
2287 | comedi_error(dev, | |
2288 | "all elements in chanlist must use the same analog reference"); | |
2289 | err++; | |
2290 | break; | |
2291 | } | |
2292 | } | |
9ef4dea6 | 2293 | /* check 4020 chanlist */ |
88b12a9a FMH |
2294 | if (board(dev)->layout == LAYOUT_4020) { |
2295 | unsigned int first_channel = CR_CHAN(cmd->chanlist[0]); | |
2296 | for (i = 1; i < cmd->chanlist_len; i++) { | |
2297 | if (CR_CHAN(cmd->chanlist[i]) != | |
2298 | first_channel + i) { | |
2299 | comedi_error(dev, | |
2300 | "chanlist must use consecutive channels"); | |
2301 | err++; | |
2302 | break; | |
2303 | } | |
2304 | } | |
2305 | if (cmd->chanlist_len == 3) { | |
2306 | comedi_error(dev, | |
2307 | "chanlist cannot be 3 channels long, use 1, 2, or 4 channels"); | |
2308 | err++; | |
2309 | } | |
2310 | } | |
2311 | } | |
2312 | ||
2313 | if (err) | |
2314 | return 5; | |
2315 | ||
2316 | return 0; | |
2317 | } | |
2318 | ||
ea6d0d4c | 2319 | static int use_hw_sample_counter(struct comedi_cmd * cmd) |
88b12a9a | 2320 | { |
9ef4dea6 | 2321 | /* disable for now until I work out a race */ |
88b12a9a FMH |
2322 | return 0; |
2323 | ||
2324 | if (cmd->stop_src == TRIG_COUNT && cmd->stop_arg <= max_counter_value) | |
2325 | return 1; | |
2326 | else | |
2327 | return 0; | |
2328 | } | |
2329 | ||
ea6d0d4c | 2330 | static void setup_sample_counters(struct comedi_device * dev, struct comedi_cmd * cmd) |
88b12a9a FMH |
2331 | { |
2332 | if (cmd->stop_src == TRIG_COUNT) { | |
9ef4dea6 | 2333 | /* set software count */ |
88b12a9a FMH |
2334 | priv(dev)->ai_count = cmd->stop_arg * cmd->chanlist_len; |
2335 | } | |
9ef4dea6 | 2336 | /* load hardware conversion counter */ |
88b12a9a FMH |
2337 | if (use_hw_sample_counter(cmd)) { |
2338 | writew(cmd->stop_arg & 0xffff, | |
2339 | priv(dev)->main_iobase + ADC_COUNT_LOWER_REG); | |
2340 | writew((cmd->stop_arg >> 16) & 0xff, | |
2341 | priv(dev)->main_iobase + ADC_COUNT_UPPER_REG); | |
2342 | } else { | |
2343 | writew(1, priv(dev)->main_iobase + ADC_COUNT_LOWER_REG); | |
2344 | } | |
2345 | } | |
2346 | ||
71b5f4f1 | 2347 | static inline unsigned int dma_transfer_size(struct comedi_device * dev) |
88b12a9a FMH |
2348 | { |
2349 | unsigned int num_samples; | |
2350 | ||
2351 | num_samples = | |
2352 | priv(dev)->ai_fifo_segment_length * | |
2353 | board(dev)->ai_fifo->sample_packing_ratio; | |
2354 | if (num_samples > DMA_BUFFER_SIZE / sizeof(uint16_t)) | |
2355 | num_samples = DMA_BUFFER_SIZE / sizeof(uint16_t); | |
2356 | ||
2357 | return num_samples; | |
2358 | } | |
2359 | ||
71b5f4f1 | 2360 | static void disable_ai_pacing(struct comedi_device * dev) |
88b12a9a FMH |
2361 | { |
2362 | unsigned long flags; | |
2363 | ||
2364 | disable_ai_interrupts(dev); | |
2365 | ||
2366 | comedi_spin_lock_irqsave(&dev->spinlock, flags); | |
2367 | priv(dev)->adc_control1_bits &= ~ADC_SW_GATE_BIT; | |
2368 | writew(priv(dev)->adc_control1_bits, | |
2369 | priv(dev)->main_iobase + ADC_CONTROL1_REG); | |
2370 | comedi_spin_unlock_irqrestore(&dev->spinlock, flags); | |
2371 | ||
2372 | /* disable pacing, triggering, etc */ | |
2373 | writew(ADC_DMA_DISABLE_BIT | ADC_SOFT_GATE_BITS | ADC_GATE_LEVEL_BIT, | |
2374 | priv(dev)->main_iobase + ADC_CONTROL0_REG); | |
2375 | } | |
2376 | ||
71b5f4f1 | 2377 | static void disable_ai_interrupts(struct comedi_device * dev) |
88b12a9a FMH |
2378 | { |
2379 | unsigned long flags; | |
2380 | ||
2381 | comedi_spin_lock_irqsave(&dev->spinlock, flags); | |
2382 | priv(dev)->intr_enable_bits &= | |
2383 | ~EN_ADC_INTR_SRC_BIT & ~EN_ADC_DONE_INTR_BIT & | |
2384 | ~EN_ADC_ACTIVE_INTR_BIT & ~EN_ADC_STOP_INTR_BIT & | |
2385 | ~EN_ADC_OVERRUN_BIT & ~ADC_INTR_SRC_MASK; | |
2386 | writew(priv(dev)->intr_enable_bits, | |
2387 | priv(dev)->main_iobase + INTR_ENABLE_REG); | |
2388 | comedi_spin_unlock_irqrestore(&dev->spinlock, flags); | |
2389 | ||
2390 | DEBUG_PRINT("intr enable bits 0x%x\n", priv(dev)->intr_enable_bits); | |
2391 | } | |
2392 | ||
ea6d0d4c | 2393 | static void enable_ai_interrupts(struct comedi_device * dev, const struct comedi_cmd * cmd) |
88b12a9a FMH |
2394 | { |
2395 | uint32_t bits; | |
2396 | unsigned long flags; | |
2397 | ||
2398 | bits = EN_ADC_OVERRUN_BIT | EN_ADC_DONE_INTR_BIT | | |
2399 | EN_ADC_ACTIVE_INTR_BIT | EN_ADC_STOP_INTR_BIT; | |
9ef4dea6 | 2400 | /* Use pio transfer and interrupt on end of conversion if TRIG_WAKE_EOS flag is set. */ |
88b12a9a | 2401 | if (cmd->flags & TRIG_WAKE_EOS) { |
9ef4dea6 | 2402 | /* 4020 doesn't support pio transfers except for fifo dregs */ |
88b12a9a FMH |
2403 | if (board(dev)->layout != LAYOUT_4020) |
2404 | bits |= ADC_INTR_EOSCAN_BITS | EN_ADC_INTR_SRC_BIT; | |
2405 | } | |
2406 | comedi_spin_lock_irqsave(&dev->spinlock, flags); | |
2407 | priv(dev)->intr_enable_bits |= bits; | |
2408 | writew(priv(dev)->intr_enable_bits, | |
2409 | priv(dev)->main_iobase + INTR_ENABLE_REG); | |
2410 | DEBUG_PRINT("intr enable bits 0x%x\n", priv(dev)->intr_enable_bits); | |
2411 | comedi_spin_unlock_irqrestore(&dev->spinlock, flags); | |
2412 | } | |
2413 | ||
71b5f4f1 | 2414 | static uint32_t ai_convert_counter_6xxx(const struct comedi_device * dev, |
ea6d0d4c | 2415 | const struct comedi_cmd * cmd) |
88b12a9a | 2416 | { |
9ef4dea6 | 2417 | /* supposed to load counter with desired divisor minus 3 */ |
88b12a9a FMH |
2418 | return cmd->convert_arg / TIMER_BASE - 3; |
2419 | } | |
2420 | ||
ea6d0d4c | 2421 | static uint32_t ai_scan_counter_6xxx(struct comedi_device * dev, struct comedi_cmd * cmd) |
88b12a9a FMH |
2422 | { |
2423 | uint32_t count; | |
9ef4dea6 | 2424 | /* figure out how long we need to delay at end of scan */ |
88b12a9a FMH |
2425 | switch (cmd->scan_begin_src) { |
2426 | case TRIG_TIMER: | |
2427 | count = (cmd->scan_begin_arg - | |
2428 | (cmd->convert_arg * (cmd->chanlist_len - 1))) | |
2429 | / TIMER_BASE; | |
2430 | break; | |
2431 | case TRIG_FOLLOW: | |
2432 | count = cmd->convert_arg / TIMER_BASE; | |
2433 | break; | |
2434 | default: | |
2435 | return 0; | |
2436 | break; | |
2437 | } | |
2438 | return count - 3; | |
2439 | } | |
2440 | ||
ea6d0d4c | 2441 | static uint32_t ai_convert_counter_4020(struct comedi_device * dev, struct comedi_cmd * cmd) |
88b12a9a FMH |
2442 | { |
2443 | unsigned int divisor; | |
2444 | ||
2445 | switch (cmd->scan_begin_src) { | |
2446 | case TRIG_TIMER: | |
2447 | divisor = cmd->scan_begin_arg / TIMER_BASE; | |
2448 | break; | |
2449 | case TRIG_OTHER: | |
2450 | divisor = priv(dev)->ext_clock.divisor; | |
2451 | break; | |
9ef4dea6 | 2452 | default: /* should never happen */ |
88b12a9a FMH |
2453 | comedi_error(dev, "bug! failed to set ai pacing!"); |
2454 | divisor = 1000; | |
2455 | break; | |
2456 | } | |
2457 | ||
9ef4dea6 | 2458 | /* supposed to load counter with desired divisor minus 2 for 4020 */ |
88b12a9a FMH |
2459 | return divisor - 2; |
2460 | } | |
2461 | ||
71b5f4f1 | 2462 | static void select_master_clock_4020(struct comedi_device * dev, |
ea6d0d4c | 2463 | const struct comedi_cmd * cmd) |
88b12a9a | 2464 | { |
9ef4dea6 | 2465 | /* select internal/external master clock */ |
88b12a9a FMH |
2466 | priv(dev)->hw_config_bits &= ~MASTER_CLOCK_4020_MASK; |
2467 | if (cmd->scan_begin_src == TRIG_OTHER) { | |
2468 | int chanspec = priv(dev)->ext_clock.chanspec; | |
2469 | ||
2470 | if (CR_CHAN(chanspec)) | |
2471 | priv(dev)->hw_config_bits |= BNC_CLOCK_4020_BITS; | |
2472 | else | |
2473 | priv(dev)->hw_config_bits |= EXT_CLOCK_4020_BITS; | |
2474 | } else { | |
2475 | priv(dev)->hw_config_bits |= INTERNAL_CLOCK_4020_BITS; | |
2476 | } | |
2477 | writew(priv(dev)->hw_config_bits, | |
2478 | priv(dev)->main_iobase + HW_CONFIG_REG); | |
2479 | } | |
2480 | ||
ea6d0d4c | 2481 | static void select_master_clock(struct comedi_device * dev, const struct comedi_cmd * cmd) |
88b12a9a FMH |
2482 | { |
2483 | switch (board(dev)->layout) { | |
2484 | case LAYOUT_4020: | |
2485 | select_master_clock_4020(dev, cmd); | |
2486 | break; | |
2487 | default: | |
2488 | break; | |
2489 | } | |
2490 | } | |
2491 | ||
71b5f4f1 | 2492 | static inline void dma_start_sync(struct comedi_device * dev, unsigned int channel) |
88b12a9a FMH |
2493 | { |
2494 | unsigned long flags; | |
2495 | ||
9ef4dea6 | 2496 | /* spinlock for plx dma control/status reg */ |
88b12a9a FMH |
2497 | comedi_spin_lock_irqsave(&dev->spinlock, flags); |
2498 | if (channel) | |
2499 | writeb(PLX_DMA_EN_BIT | PLX_DMA_START_BIT | | |
2500 | PLX_CLEAR_DMA_INTR_BIT, | |
2501 | priv(dev)->plx9080_iobase + PLX_DMA1_CS_REG); | |
2502 | else | |
2503 | writeb(PLX_DMA_EN_BIT | PLX_DMA_START_BIT | | |
2504 | PLX_CLEAR_DMA_INTR_BIT, | |
2505 | priv(dev)->plx9080_iobase + PLX_DMA0_CS_REG); | |
2506 | comedi_spin_unlock_irqrestore(&dev->spinlock, flags); | |
2507 | } | |
2508 | ||
ea6d0d4c | 2509 | static void set_ai_pacing(struct comedi_device * dev, struct comedi_cmd * cmd) |
88b12a9a FMH |
2510 | { |
2511 | uint32_t convert_counter = 0, scan_counter = 0; | |
2512 | ||
2513 | check_adc_timing(dev, cmd); | |
2514 | ||
2515 | select_master_clock(dev, cmd); | |
2516 | ||
2517 | if (board(dev)->layout == LAYOUT_4020) { | |
2518 | convert_counter = ai_convert_counter_4020(dev, cmd); | |
2519 | } else { | |
2520 | convert_counter = ai_convert_counter_6xxx(dev, cmd); | |
2521 | scan_counter = ai_scan_counter_6xxx(dev, cmd); | |
2522 | } | |
2523 | ||
9ef4dea6 | 2524 | /* load lower 16 bits of convert interval */ |
88b12a9a FMH |
2525 | writew(convert_counter & 0xffff, |
2526 | priv(dev)->main_iobase + ADC_SAMPLE_INTERVAL_LOWER_REG); | |
2527 | DEBUG_PRINT("convert counter 0x%x\n", convert_counter); | |
9ef4dea6 | 2528 | /* load upper 8 bits of convert interval */ |
88b12a9a FMH |
2529 | writew((convert_counter >> 16) & 0xff, |
2530 | priv(dev)->main_iobase + ADC_SAMPLE_INTERVAL_UPPER_REG); | |
9ef4dea6 | 2531 | /* load lower 16 bits of scan delay */ |
88b12a9a FMH |
2532 | writew(scan_counter & 0xffff, |
2533 | priv(dev)->main_iobase + ADC_DELAY_INTERVAL_LOWER_REG); | |
9ef4dea6 | 2534 | /* load upper 8 bits of scan delay */ |
88b12a9a FMH |
2535 | writew((scan_counter >> 16) & 0xff, |
2536 | priv(dev)->main_iobase + ADC_DELAY_INTERVAL_UPPER_REG); | |
2537 | DEBUG_PRINT("scan counter 0x%x\n", scan_counter); | |
2538 | } | |
2539 | ||
ea6d0d4c | 2540 | static int use_internal_queue_6xxx(const struct comedi_cmd * cmd) |
88b12a9a FMH |
2541 | { |
2542 | int i; | |
2543 | for (i = 0; i + 1 < cmd->chanlist_len; i++) { | |
2544 | if (CR_CHAN(cmd->chanlist[i + 1]) != | |
2545 | CR_CHAN(cmd->chanlist[i]) + 1) | |
2546 | return 0; | |
2547 | if (CR_RANGE(cmd->chanlist[i + 1]) != | |
2548 | CR_RANGE(cmd->chanlist[i])) | |
2549 | return 0; | |
2550 | if (CR_AREF(cmd->chanlist[i + 1]) != CR_AREF(cmd->chanlist[i])) | |
2551 | return 0; | |
2552 | } | |
2553 | return 1; | |
2554 | } | |
2555 | ||
ea6d0d4c | 2556 | static int setup_channel_queue(struct comedi_device * dev, const struct comedi_cmd * cmd) |
88b12a9a FMH |
2557 | { |
2558 | unsigned short bits; | |
2559 | int i; | |
2560 | ||
2561 | if (board(dev)->layout != LAYOUT_4020) { | |
2562 | if (use_internal_queue_6xxx(cmd)) { | |
2563 | priv(dev)->hw_config_bits &= ~EXT_QUEUE_BIT; | |
2564 | writew(priv(dev)->hw_config_bits, | |
2565 | priv(dev)->main_iobase + HW_CONFIG_REG); | |
2566 | bits = 0; | |
9ef4dea6 | 2567 | /* set channel */ |
88b12a9a | 2568 | bits |= adc_chan_bits(CR_CHAN(cmd->chanlist[0])); |
9ef4dea6 | 2569 | /* set gain */ |
88b12a9a FMH |
2570 | bits |= ai_range_bits_6xxx(dev, |
2571 | CR_RANGE(cmd->chanlist[0])); | |
9ef4dea6 | 2572 | /* set single-ended / differential */ |
88b12a9a FMH |
2573 | bits |= se_diff_bit_6xxx(dev, |
2574 | CR_AREF(cmd->chanlist[0]) == AREF_DIFF); | |
2575 | if (CR_AREF(cmd->chanlist[0]) == AREF_COMMON) | |
2576 | bits |= ADC_COMMON_BIT; | |
9ef4dea6 | 2577 | /* set stop channel */ |
88b12a9a FMH |
2578 | writew(adc_chan_bits(CR_CHAN(cmd->chanlist[cmd-> |
2579 | chanlist_len - 1])), | |
2580 | priv(dev)->main_iobase + ADC_QUEUE_HIGH_REG); | |
9ef4dea6 | 2581 | /* set start channel, and rest of settings */ |
88b12a9a FMH |
2582 | writew(bits, |
2583 | priv(dev)->main_iobase + ADC_QUEUE_LOAD_REG); | |
2584 | } else { | |
9ef4dea6 | 2585 | /* use external queue */ |
88b12a9a FMH |
2586 | if (dev->write_subdev && dev->write_subdev->busy) { |
2587 | warn_external_queue(dev); | |
2588 | return -EBUSY; | |
2589 | } | |
2590 | priv(dev)->hw_config_bits |= EXT_QUEUE_BIT; | |
2591 | writew(priv(dev)->hw_config_bits, | |
2592 | priv(dev)->main_iobase + HW_CONFIG_REG); | |
9ef4dea6 | 2593 | /* clear DAC buffer to prevent weird interactions */ |
88b12a9a FMH |
2594 | writew(0, |
2595 | priv(dev)->main_iobase + DAC_BUFFER_CLEAR_REG); | |
9ef4dea6 | 2596 | /* clear queue pointer */ |
88b12a9a | 2597 | writew(0, priv(dev)->main_iobase + ADC_QUEUE_CLEAR_REG); |
9ef4dea6 | 2598 | /* load external queue */ |
88b12a9a FMH |
2599 | for (i = 0; i < cmd->chanlist_len; i++) { |
2600 | bits = 0; | |
9ef4dea6 | 2601 | /* set channel */ |
88b12a9a FMH |
2602 | bits |= adc_chan_bits(CR_CHAN(cmd-> |
2603 | chanlist[i])); | |
9ef4dea6 | 2604 | /* set gain */ |
88b12a9a FMH |
2605 | bits |= ai_range_bits_6xxx(dev, |
2606 | CR_RANGE(cmd->chanlist[i])); | |
9ef4dea6 | 2607 | /* set single-ended / differential */ |
88b12a9a FMH |
2608 | bits |= se_diff_bit_6xxx(dev, |
2609 | CR_AREF(cmd->chanlist[i]) == AREF_DIFF); | |
2610 | if (CR_AREF(cmd->chanlist[i]) == AREF_COMMON) | |
2611 | bits |= ADC_COMMON_BIT; | |
9ef4dea6 | 2612 | /* mark end of queue */ |
88b12a9a FMH |
2613 | if (i == cmd->chanlist_len - 1) |
2614 | bits |= QUEUE_EOSCAN_BIT | | |
2615 | QUEUE_EOSEQ_BIT; | |
2616 | writew(bits, | |
2617 | priv(dev)->main_iobase + | |
2618 | ADC_QUEUE_FIFO_REG); | |
2619 | DEBUG_PRINT | |
2620 | ("wrote 0x%x to external channel queue\n", | |
2621 | bits); | |
2622 | } | |
2623 | /* doing a queue clear is not specified in board docs, | |
2624 | * but required for reliable operation */ | |
2625 | writew(0, priv(dev)->main_iobase + ADC_QUEUE_CLEAR_REG); | |
9ef4dea6 | 2626 | /* prime queue holding register */ |
88b12a9a FMH |
2627 | writew(0, priv(dev)->main_iobase + ADC_QUEUE_LOAD_REG); |
2628 | } | |
2629 | } else { | |
2630 | unsigned short old_cal_range_bits = | |
2631 | priv(dev)->i2c_cal_range_bits; | |
2632 | ||
2633 | priv(dev)->i2c_cal_range_bits &= ~ADC_SRC_4020_MASK; | |
9ef4dea6 | 2634 | /* select BNC inputs */ |
88b12a9a | 2635 | priv(dev)->i2c_cal_range_bits |= adc_src_4020_bits(4); |
9ef4dea6 | 2636 | /* select ranges */ |
88b12a9a FMH |
2637 | for (i = 0; i < cmd->chanlist_len; i++) { |
2638 | unsigned int channel = CR_CHAN(cmd->chanlist[i]); | |
2639 | unsigned int range = CR_RANGE(cmd->chanlist[i]); | |
2640 | ||
2641 | if (range == 0) | |
2642 | priv(dev)->i2c_cal_range_bits |= | |
2643 | attenuate_bit(channel); | |
2644 | else | |
2645 | priv(dev)->i2c_cal_range_bits &= | |
2646 | ~attenuate_bit(channel); | |
2647 | } | |
9ef4dea6 | 2648 | /* update calibration/range i2c register only if necessary, as it is very slow */ |
88b12a9a FMH |
2649 | if (old_cal_range_bits != priv(dev)->i2c_cal_range_bits) { |
2650 | uint8_t i2c_data = priv(dev)->i2c_cal_range_bits; | |
2651 | i2c_write(dev, RANGE_CAL_I2C_ADDR, &i2c_data, | |
2652 | sizeof(i2c_data)); | |
2653 | } | |
2654 | } | |
2655 | return 0; | |
2656 | } | |
2657 | ||
71b5f4f1 | 2658 | static inline void load_first_dma_descriptor(struct comedi_device * dev, |
88b12a9a FMH |
2659 | unsigned int dma_channel, unsigned int descriptor_bits) |
2660 | { | |
2661 | /* The transfer size, pci address, and local address registers | |
2662 | * are supposedly unused during chained dma, | |
2663 | * but I have found that left over values from last operation | |
2664 | * occasionally cause problems with transfer of first dma | |
2665 | * block. Initializing them to zero seems to fix the problem. */ | |
2666 | if (dma_channel) { | |
2667 | writel(0, | |
2668 | priv(dev)->plx9080_iobase + PLX_DMA1_TRANSFER_SIZE_REG); | |
2669 | writel(0, priv(dev)->plx9080_iobase + PLX_DMA1_PCI_ADDRESS_REG); | |
2670 | writel(0, | |
2671 | priv(dev)->plx9080_iobase + PLX_DMA1_LOCAL_ADDRESS_REG); | |
2672 | writel(descriptor_bits, | |
2673 | priv(dev)->plx9080_iobase + PLX_DMA1_DESCRIPTOR_REG); | |
2674 | } else { | |
2675 | writel(0, | |
2676 | priv(dev)->plx9080_iobase + PLX_DMA0_TRANSFER_SIZE_REG); | |
2677 | writel(0, priv(dev)->plx9080_iobase + PLX_DMA0_PCI_ADDRESS_REG); | |
2678 | writel(0, | |
2679 | priv(dev)->plx9080_iobase + PLX_DMA0_LOCAL_ADDRESS_REG); | |
2680 | writel(descriptor_bits, | |
2681 | priv(dev)->plx9080_iobase + PLX_DMA0_DESCRIPTOR_REG); | |
2682 | } | |
2683 | } | |
2684 | ||
34c43922 | 2685 | static int ai_cmd(struct comedi_device * dev, struct comedi_subdevice * s) |
88b12a9a | 2686 | { |
d163679c | 2687 | struct comedi_async *async = s->async; |
ea6d0d4c | 2688 | struct comedi_cmd *cmd = &async->cmd; |
88b12a9a FMH |
2689 | uint32_t bits; |
2690 | unsigned int i; | |
2691 | unsigned long flags; | |
2692 | int retval; | |
2693 | ||
2694 | disable_ai_pacing(dev); | |
2695 | abort_dma(dev, 1); | |
2696 | ||
2697 | retval = setup_channel_queue(dev, cmd); | |
2698 | if (retval < 0) | |
2699 | return retval; | |
2700 | ||
9ef4dea6 | 2701 | /* make sure internal calibration source is turned off */ |
88b12a9a FMH |
2702 | writew(0, priv(dev)->main_iobase + CALIBRATION_REG); |
2703 | ||
2704 | set_ai_pacing(dev, cmd); | |
2705 | ||
2706 | setup_sample_counters(dev, cmd); | |
2707 | ||
2708 | enable_ai_interrupts(dev, cmd); | |
2709 | ||
2710 | comedi_spin_lock_irqsave(&dev->spinlock, flags); | |
2711 | /* set mode, allow conversions through software gate */ | |
2712 | priv(dev)->adc_control1_bits |= ADC_SW_GATE_BIT; | |
2713 | priv(dev)->adc_control1_bits &= ~ADC_DITHER_BIT; | |
2714 | if (board(dev)->layout != LAYOUT_4020) { | |
2715 | priv(dev)->adc_control1_bits &= ~ADC_MODE_MASK; | |
2716 | if (cmd->convert_src == TRIG_EXT) | |
9ef4dea6 | 2717 | priv(dev)->adc_control1_bits |= adc_mode_bits(13); /* good old mode 13 */ |
88b12a9a | 2718 | else |
9ef4dea6 | 2719 | priv(dev)->adc_control1_bits |= adc_mode_bits(8); /* mode 8. What else could you need? */ |
88b12a9a FMH |
2720 | } else { |
2721 | priv(dev)->adc_control1_bits &= ~CHANNEL_MODE_4020_MASK; | |
2722 | if (cmd->chanlist_len == 4) | |
2723 | priv(dev)->adc_control1_bits |= FOUR_CHANNEL_4020_BITS; | |
2724 | else if (cmd->chanlist_len == 2) | |
2725 | priv(dev)->adc_control1_bits |= TWO_CHANNEL_4020_BITS; | |
2726 | priv(dev)->adc_control1_bits &= ~ADC_LO_CHANNEL_4020_MASK; | |
2727 | priv(dev)->adc_control1_bits |= | |
2728 | adc_lo_chan_4020_bits(CR_CHAN(cmd->chanlist[0])); | |
2729 | priv(dev)->adc_control1_bits &= ~ADC_HI_CHANNEL_4020_MASK; | |
2730 | priv(dev)->adc_control1_bits |= | |
2731 | adc_hi_chan_4020_bits(CR_CHAN(cmd->chanlist[cmd-> | |
2732 | chanlist_len - 1])); | |
2733 | } | |
2734 | writew(priv(dev)->adc_control1_bits, | |
2735 | priv(dev)->main_iobase + ADC_CONTROL1_REG); | |
2736 | DEBUG_PRINT("control1 bits 0x%x\n", priv(dev)->adc_control1_bits); | |
2737 | comedi_spin_unlock_irqrestore(&dev->spinlock, flags); | |
2738 | ||
9ef4dea6 | 2739 | /* clear adc buffer */ |
88b12a9a FMH |
2740 | writew(0, priv(dev)->main_iobase + ADC_BUFFER_CLEAR_REG); |
2741 | ||
2742 | if ((cmd->flags & TRIG_WAKE_EOS) == 0 || | |
2743 | board(dev)->layout == LAYOUT_4020) { | |
2744 | priv(dev)->ai_dma_index = 0; | |
2745 | ||
9ef4dea6 | 2746 | /* set dma transfer size */ |
88b12a9a FMH |
2747 | for (i = 0; i < ai_dma_ring_count(board(dev)); i++) |
2748 | priv(dev)->ai_dma_desc[i].transfer_size = | |
2749 | cpu_to_le32(dma_transfer_size(dev) * | |
2750 | sizeof(uint16_t)); | |
2751 | ||
9ef4dea6 | 2752 | /* give location of first dma descriptor */ |
88b12a9a FMH |
2753 | load_first_dma_descriptor(dev, 1, |
2754 | priv(dev)-> | |
2755 | ai_dma_desc_bus_addr | PLX_DESC_IN_PCI_BIT | | |
2756 | PLX_INTR_TERM_COUNT | PLX_XFER_LOCAL_TO_PCI); | |
2757 | ||
2758 | dma_start_sync(dev, 1); | |
2759 | } | |
2760 | ||
2761 | if (board(dev)->layout == LAYOUT_4020) { | |
2762 | /* set source for external triggers */ | |
2763 | bits = 0; | |
2764 | if (cmd->start_src == TRIG_EXT && CR_CHAN(cmd->start_arg)) | |
2765 | bits |= EXT_START_TRIG_BNC_BIT; | |
2766 | if (cmd->stop_src == TRIG_EXT && CR_CHAN(cmd->stop_arg)) | |
2767 | bits |= EXT_STOP_TRIG_BNC_BIT; | |
2768 | writew(bits, priv(dev)->main_iobase + DAQ_ATRIG_LOW_4020_REG); | |
2769 | } | |
2770 | ||
2771 | comedi_spin_lock_irqsave(&dev->spinlock, flags); | |
2772 | ||
2773 | /* enable pacing, triggering, etc */ | |
2774 | bits = ADC_ENABLE_BIT | ADC_SOFT_GATE_BITS | ADC_GATE_LEVEL_BIT; | |
2775 | if (cmd->flags & TRIG_WAKE_EOS) | |
2776 | bits |= ADC_DMA_DISABLE_BIT; | |
9ef4dea6 | 2777 | /* set start trigger */ |
88b12a9a FMH |
2778 | if (cmd->start_src == TRIG_EXT) { |
2779 | bits |= ADC_START_TRIG_EXT_BITS; | |
2780 | if (cmd->start_arg & CR_INVERT) | |
2781 | bits |= ADC_START_TRIG_FALLING_BIT; | |
2782 | } else if (cmd->start_src == TRIG_NOW) | |
2783 | bits |= ADC_START_TRIG_SOFT_BITS; | |
2784 | if (use_hw_sample_counter(cmd)) | |
2785 | bits |= ADC_SAMPLE_COUNTER_EN_BIT; | |
2786 | writew(bits, priv(dev)->main_iobase + ADC_CONTROL0_REG); | |
2787 | DEBUG_PRINT("control0 bits 0x%x\n", bits); | |
2788 | ||
2789 | priv(dev)->ai_cmd_running = 1; | |
2790 | ||
2791 | comedi_spin_unlock_irqrestore(&dev->spinlock, flags); | |
2792 | ||
9ef4dea6 | 2793 | /* start aquisition */ |
88b12a9a FMH |
2794 | if (cmd->start_src == TRIG_NOW) { |
2795 | writew(0, priv(dev)->main_iobase + ADC_START_REG); | |
2796 | DEBUG_PRINT("soft trig\n"); | |
2797 | } | |
2798 | ||
2799 | return 0; | |
2800 | } | |
2801 | ||
9ef4dea6 | 2802 | /* read num_samples from 16 bit wide ai fifo */ |
71b5f4f1 | 2803 | static void pio_drain_ai_fifo_16(struct comedi_device * dev) |
88b12a9a | 2804 | { |
34c43922 | 2805 | struct comedi_subdevice *s = dev->read_subdev; |
d163679c | 2806 | struct comedi_async *async = s->async; |
ea6d0d4c | 2807 | struct comedi_cmd *cmd = &async->cmd; |
88b12a9a FMH |
2808 | unsigned int i; |
2809 | uint16_t prepost_bits; | |
2810 | int read_segment, read_index, write_segment, write_index; | |
2811 | int num_samples; | |
2812 | ||
2813 | do { | |
9ef4dea6 | 2814 | /* get least significant 15 bits */ |
88b12a9a FMH |
2815 | read_index = |
2816 | readw(priv(dev)->main_iobase + | |
2817 | ADC_READ_PNTR_REG) & 0x7fff; | |
2818 | write_index = | |
2819 | readw(priv(dev)->main_iobase + | |
2820 | ADC_WRITE_PNTR_REG) & 0x7fff; | |
2821 | /* Get most significant bits (grey code). Different boards use different code | |
2822 | * so use a scheme that doesn't depend on encoding. This read must | |
2823 | * occur after reading least significant 15 bits to avoid race | |
2824 | * with fifo switching to next segment. */ | |
2825 | prepost_bits = readw(priv(dev)->main_iobase + PREPOST_REG); | |
2826 | ||
2827 | /* if read and write pointers are not on the same fifo segment, read to the | |
2828 | * end of the read segment */ | |
2829 | read_segment = adc_upper_read_ptr_code(prepost_bits); | |
2830 | write_segment = adc_upper_write_ptr_code(prepost_bits); | |
2831 | ||
2832 | DEBUG_PRINT(" rd seg %i, wrt seg %i, rd idx %i, wrt idx %i\n", | |
2833 | read_segment, write_segment, read_index, write_index); | |
2834 | ||
2835 | if (read_segment != write_segment) | |
2836 | num_samples = | |
2837 | priv(dev)->ai_fifo_segment_length - read_index; | |
2838 | else | |
2839 | num_samples = write_index - read_index; | |
2840 | ||
2841 | if (cmd->stop_src == TRIG_COUNT) { | |
2842 | if (priv(dev)->ai_count == 0) | |
2843 | break; | |
2844 | if (num_samples > priv(dev)->ai_count) { | |
2845 | num_samples = priv(dev)->ai_count; | |
2846 | } | |
2847 | priv(dev)->ai_count -= num_samples; | |
2848 | } | |
2849 | ||
2850 | if (num_samples < 0) { | |
2851 | rt_printk(" cb_pcidas64: bug! num_samples < 0\n"); | |
2852 | break; | |
2853 | } | |
2854 | ||
2855 | DEBUG_PRINT(" read %i samples from fifo\n", num_samples); | |
2856 | ||
2857 | for (i = 0; i < num_samples; i++) { | |
2858 | cfc_write_to_buffer(s, | |
2859 | readw(priv(dev)->main_iobase + ADC_FIFO_REG)); | |
2860 | } | |
2861 | ||
2862 | } while (read_segment != write_segment); | |
2863 | } | |
2864 | ||
2865 | /* Read from 32 bit wide ai fifo of 4020 - deal with insane grey coding of pointers. | |
2866 | * The pci-4020 hardware only supports | |
2867 | * dma transfers (it only supports the use of pio for draining the last remaining | |
2868 | * points from the fifo when a data aquisition operation has completed). | |
2869 | */ | |
71b5f4f1 | 2870 | static void pio_drain_ai_fifo_32(struct comedi_device * dev) |
88b12a9a | 2871 | { |
34c43922 | 2872 | struct comedi_subdevice *s = dev->read_subdev; |
d163679c | 2873 | struct comedi_async *async = s->async; |
ea6d0d4c | 2874 | struct comedi_cmd *cmd = &async->cmd; |
88b12a9a FMH |
2875 | unsigned int i; |
2876 | unsigned int max_transfer = 100000; | |
2877 | uint32_t fifo_data; | |
2878 | int write_code = | |
2879 | readw(priv(dev)->main_iobase + ADC_WRITE_PNTR_REG) & 0x7fff; | |
2880 | int read_code = | |
2881 | readw(priv(dev)->main_iobase + ADC_READ_PNTR_REG) & 0x7fff; | |
2882 | ||
2883 | if (cmd->stop_src == TRIG_COUNT) { | |
2884 | if (max_transfer > priv(dev)->ai_count) { | |
2885 | max_transfer = priv(dev)->ai_count; | |
2886 | } | |
2887 | } | |
2888 | for (i = 0; read_code != write_code && i < max_transfer;) { | |
2889 | fifo_data = readl(priv(dev)->dio_counter_iobase + ADC_FIFO_REG); | |
2890 | cfc_write_to_buffer(s, fifo_data & 0xffff); | |
2891 | i++; | |
2892 | if (i < max_transfer) { | |
2893 | cfc_write_to_buffer(s, (fifo_data >> 16) & 0xffff); | |
2894 | i++; | |
2895 | } | |
2896 | read_code = | |
2897 | readw(priv(dev)->main_iobase + | |
2898 | ADC_READ_PNTR_REG) & 0x7fff; | |
2899 | } | |
2900 | priv(dev)->ai_count -= i; | |
2901 | } | |
2902 | ||
9ef4dea6 | 2903 | /* empty fifo */ |
71b5f4f1 | 2904 | static void pio_drain_ai_fifo(struct comedi_device * dev) |
88b12a9a FMH |
2905 | { |
2906 | if (board(dev)->layout == LAYOUT_4020) { | |
2907 | pio_drain_ai_fifo_32(dev); | |
2908 | } else | |
2909 | pio_drain_ai_fifo_16(dev); | |
2910 | } | |
2911 | ||
71b5f4f1 | 2912 | static void drain_dma_buffers(struct comedi_device * dev, unsigned int channel) |
88b12a9a | 2913 | { |
d163679c | 2914 | struct comedi_async *async = dev->read_subdev->async; |
88b12a9a FMH |
2915 | uint32_t next_transfer_addr; |
2916 | int j; | |
2917 | int num_samples = 0; | |
2918 | void *pci_addr_reg; | |
2919 | ||
2920 | if (channel) | |
2921 | pci_addr_reg = | |
2922 | priv(dev)->plx9080_iobase + PLX_DMA1_PCI_ADDRESS_REG; | |
2923 | else | |
2924 | pci_addr_reg = | |
2925 | priv(dev)->plx9080_iobase + PLX_DMA0_PCI_ADDRESS_REG; | |
2926 | ||
9ef4dea6 | 2927 | /* loop until we have read all the full buffers */ |
88b12a9a FMH |
2928 | for (j = 0, next_transfer_addr = readl(pci_addr_reg); |
2929 | (next_transfer_addr < | |
2930 | priv(dev)->ai_buffer_bus_addr[priv(dev)->ai_dma_index] | |
2931 | || next_transfer_addr >= | |
2932 | priv(dev)->ai_buffer_bus_addr[priv(dev)->ai_dma_index] + | |
2933 | DMA_BUFFER_SIZE) && j < ai_dma_ring_count(board(dev)); | |
2934 | j++) { | |
9ef4dea6 | 2935 | /* transfer data from dma buffer to comedi buffer */ |
88b12a9a FMH |
2936 | num_samples = dma_transfer_size(dev); |
2937 | if (async->cmd.stop_src == TRIG_COUNT) { | |
2938 | if (num_samples > priv(dev)->ai_count) | |
2939 | num_samples = priv(dev)->ai_count; | |
2940 | priv(dev)->ai_count -= num_samples; | |
2941 | } | |
2942 | cfc_write_array_to_buffer(dev->read_subdev, | |
2943 | priv(dev)->ai_buffer[priv(dev)->ai_dma_index], | |
2944 | num_samples * sizeof(uint16_t)); | |
2945 | priv(dev)->ai_dma_index = | |
2946 | (priv(dev)->ai_dma_index + | |
2947 | 1) % ai_dma_ring_count(board(dev)); | |
2948 | ||
2949 | DEBUG_PRINT("next buffer addr 0x%lx\n", | |
2950 | (unsigned long)priv(dev)->ai_buffer_bus_addr[priv(dev)-> | |
2951 | ai_dma_index]); | |
2952 | DEBUG_PRINT("pci addr reg 0x%x\n", next_transfer_addr); | |
2953 | } | |
2954 | /* XXX check for dma ring buffer overrun (use end-of-chain bit to mark last | |
2955 | * unused buffer) */ | |
2956 | } | |
2957 | ||
71b5f4f1 | 2958 | void handle_ai_interrupt(struct comedi_device * dev, unsigned short status, |
88b12a9a FMH |
2959 | unsigned int plx_status) |
2960 | { | |
34c43922 | 2961 | struct comedi_subdevice *s = dev->read_subdev; |
d163679c | 2962 | struct comedi_async *async = s->async; |
ea6d0d4c | 2963 | struct comedi_cmd *cmd = &async->cmd; |
88b12a9a FMH |
2964 | uint8_t dma1_status; |
2965 | unsigned long flags; | |
2966 | ||
9ef4dea6 | 2967 | /* check for fifo overrun */ |
88b12a9a FMH |
2968 | if (status & ADC_OVERRUN_BIT) { |
2969 | comedi_error(dev, "fifo overrun"); | |
2970 | async->events |= COMEDI_CB_EOA | COMEDI_CB_ERROR; | |
2971 | } | |
9ef4dea6 | 2972 | /* spin lock makes sure noone else changes plx dma control reg */ |
88b12a9a FMH |
2973 | comedi_spin_lock_irqsave(&dev->spinlock, flags); |
2974 | dma1_status = readb(priv(dev)->plx9080_iobase + PLX_DMA1_CS_REG); | |
9ef4dea6 | 2975 | if (plx_status & ICS_DMA1_A) { /* dma chan 1 interrupt */ |
88b12a9a FMH |
2976 | writeb((dma1_status & PLX_DMA_EN_BIT) | PLX_CLEAR_DMA_INTR_BIT, |
2977 | priv(dev)->plx9080_iobase + PLX_DMA1_CS_REG); | |
2978 | DEBUG_PRINT("dma1 status 0x%x\n", dma1_status); | |
2979 | ||
2980 | if (dma1_status & PLX_DMA_EN_BIT) { | |
2981 | drain_dma_buffers(dev, 1); | |
2982 | } | |
2983 | DEBUG_PRINT(" cleared dma ch1 interrupt\n"); | |
2984 | } | |
2985 | comedi_spin_unlock_irqrestore(&dev->spinlock, flags); | |
2986 | ||
2987 | if (status & ADC_DONE_BIT) | |
2988 | DEBUG_PRINT("adc done interrupt\n"); | |
2989 | ||
9ef4dea6 | 2990 | /* drain fifo with pio */ |
88b12a9a FMH |
2991 | if ((status & ADC_DONE_BIT) || |
2992 | ((cmd->flags & TRIG_WAKE_EOS) && | |
2993 | (status & ADC_INTR_PENDING_BIT) && | |
2994 | (board(dev)->layout != LAYOUT_4020))) { | |
2995 | DEBUG_PRINT("pio fifo drain\n"); | |
2996 | comedi_spin_lock_irqsave(&dev->spinlock, flags); | |
2997 | if (priv(dev)->ai_cmd_running) { | |
2998 | comedi_spin_unlock_irqrestore(&dev->spinlock, flags); | |
2999 | pio_drain_ai_fifo(dev); | |
3000 | } else | |
3001 | comedi_spin_unlock_irqrestore(&dev->spinlock, flags); | |
3002 | } | |
9ef4dea6 | 3003 | /* if we are have all the data, then quit */ |
88b12a9a FMH |
3004 | if ((cmd->stop_src == TRIG_COUNT && priv(dev)->ai_count <= 0) || |
3005 | (cmd->stop_src == TRIG_EXT && (status & ADC_STOP_BIT))) { | |
3006 | async->events |= COMEDI_CB_EOA; | |
3007 | } | |
3008 | ||
3009 | cfc_handle_events(dev, s); | |
3010 | } | |
3011 | ||
71b5f4f1 | 3012 | static inline unsigned int prev_ao_dma_index(struct comedi_device * dev) |
88b12a9a FMH |
3013 | { |
3014 | unsigned int buffer_index; | |
3015 | ||
3016 | if (priv(dev)->ao_dma_index == 0) | |
3017 | buffer_index = AO_DMA_RING_COUNT - 1; | |
3018 | else | |
3019 | buffer_index = priv(dev)->ao_dma_index - 1; | |
3020 | return buffer_index; | |
3021 | } | |
3022 | ||
71b5f4f1 | 3023 | static int last_ao_dma_load_completed(struct comedi_device * dev) |
88b12a9a FMH |
3024 | { |
3025 | unsigned int buffer_index; | |
3026 | unsigned int transfer_address; | |
3027 | unsigned short dma_status; | |
3028 | ||
3029 | buffer_index = prev_ao_dma_index(dev); | |
3030 | dma_status = readb(priv(dev)->plx9080_iobase + PLX_DMA0_CS_REG); | |
3031 | if ((dma_status & PLX_DMA_DONE_BIT) == 0) | |
3032 | return 0; | |
3033 | ||
3034 | transfer_address = | |
3035 | readl(priv(dev)->plx9080_iobase + PLX_DMA0_PCI_ADDRESS_REG); | |
3036 | if (transfer_address != priv(dev)->ao_buffer_bus_addr[buffer_index]) | |
3037 | return 0; | |
3038 | ||
3039 | return 1; | |
3040 | } | |
3041 | ||
ea6d0d4c | 3042 | static int ao_stopped_by_error(struct comedi_device * dev, const struct comedi_cmd * cmd) |
88b12a9a FMH |
3043 | { |
3044 | if (cmd->stop_src == TRIG_NONE) | |
3045 | return 1; | |
3046 | if (cmd->stop_src == TRIG_COUNT) { | |
3047 | if (priv(dev)->ao_count) | |
3048 | return 1; | |
3049 | if (last_ao_dma_load_completed(dev) == 0) | |
3050 | return 1; | |
3051 | } | |
3052 | return 0; | |
3053 | } | |
3054 | ||
71b5f4f1 | 3055 | static inline int ao_dma_needs_restart(struct comedi_device * dev, |
88b12a9a FMH |
3056 | unsigned short dma_status) |
3057 | { | |
3058 | if ((dma_status & PLX_DMA_DONE_BIT) == 0 || | |
3059 | (dma_status & PLX_DMA_EN_BIT) == 0) | |
3060 | return 0; | |
3061 | if (last_ao_dma_load_completed(dev)) | |
3062 | return 0; | |
3063 | ||
3064 | return 1; | |
3065 | } | |
3066 | ||
71b5f4f1 | 3067 | static void restart_ao_dma(struct comedi_device * dev) |
88b12a9a FMH |
3068 | { |
3069 | unsigned int dma_desc_bits; | |
3070 | ||
3071 | dma_desc_bits = | |
3072 | readl(priv(dev)->plx9080_iobase + PLX_DMA0_DESCRIPTOR_REG); | |
3073 | dma_desc_bits &= ~PLX_END_OF_CHAIN_BIT; | |
3074 | DEBUG_PRINT("restarting ao dma, descriptor reg 0x%x\n", dma_desc_bits); | |
3075 | load_first_dma_descriptor(dev, 0, dma_desc_bits); | |
3076 | ||
3077 | dma_start_sync(dev, 0); | |
3078 | } | |
3079 | ||
71b5f4f1 | 3080 | static void handle_ao_interrupt(struct comedi_device * dev, unsigned short status, |
88b12a9a FMH |
3081 | unsigned int plx_status) |
3082 | { | |
34c43922 | 3083 | struct comedi_subdevice *s = dev->write_subdev; |
d163679c | 3084 | struct comedi_async *async; |
ea6d0d4c | 3085 | struct comedi_cmd *cmd; |
88b12a9a FMH |
3086 | uint8_t dma0_status; |
3087 | unsigned long flags; | |
3088 | ||
3089 | /* board might not support ao, in which case write_subdev is NULL */ | |
3090 | if (s == NULL) | |
3091 | return; | |
3092 | async = s->async; | |
3093 | cmd = &async->cmd; | |
3094 | ||
9ef4dea6 | 3095 | /* spin lock makes sure noone else changes plx dma control reg */ |
88b12a9a FMH |
3096 | comedi_spin_lock_irqsave(&dev->spinlock, flags); |
3097 | dma0_status = readb(priv(dev)->plx9080_iobase + PLX_DMA0_CS_REG); | |
9ef4dea6 | 3098 | if (plx_status & ICS_DMA0_A) { /* dma chan 0 interrupt */ |
88b12a9a FMH |
3099 | if ((dma0_status & PLX_DMA_EN_BIT) |
3100 | && !(dma0_status & PLX_DMA_DONE_BIT)) | |
3101 | writeb(PLX_DMA_EN_BIT | PLX_CLEAR_DMA_INTR_BIT, | |
3102 | priv(dev)->plx9080_iobase + PLX_DMA0_CS_REG); | |
3103 | else | |
3104 | writeb(PLX_CLEAR_DMA_INTR_BIT, | |
3105 | priv(dev)->plx9080_iobase + PLX_DMA0_CS_REG); | |
3106 | comedi_spin_unlock_irqrestore(&dev->spinlock, flags); | |
3107 | DEBUG_PRINT("dma0 status 0x%x\n", dma0_status); | |
3108 | if (dma0_status & PLX_DMA_EN_BIT) { | |
3109 | load_ao_dma(dev, cmd); | |
3110 | /* try to recover from dma end-of-chain event */ | |
3111 | if (ao_dma_needs_restart(dev, dma0_status)) | |
3112 | restart_ao_dma(dev); | |
3113 | } | |
3114 | DEBUG_PRINT(" cleared dma ch0 interrupt\n"); | |
3115 | } else | |
3116 | comedi_spin_unlock_irqrestore(&dev->spinlock, flags); | |
3117 | ||
3118 | if ((status & DAC_DONE_BIT)) { | |
3119 | async->events |= COMEDI_CB_EOA; | |
3120 | if (ao_stopped_by_error(dev, cmd)) | |
3121 | async->events |= COMEDI_CB_ERROR; | |
3122 | DEBUG_PRINT("plx dma0 desc reg 0x%x\n", | |
3123 | readl(priv(dev)->plx9080_iobase + | |
3124 | PLX_DMA0_DESCRIPTOR_REG)); | |
3125 | DEBUG_PRINT("plx dma0 address reg 0x%x\n", | |
3126 | readl(priv(dev)->plx9080_iobase + | |
3127 | PLX_DMA0_PCI_ADDRESS_REG)); | |
3128 | } | |
3129 | cfc_handle_events(dev, s); | |
3130 | } | |
3131 | ||
70265d24 | 3132 | static irqreturn_t handle_interrupt(int irq, void *d) |
88b12a9a | 3133 | { |
71b5f4f1 | 3134 | struct comedi_device *dev = d; |
88b12a9a FMH |
3135 | unsigned short status; |
3136 | uint32_t plx_status; | |
3137 | uint32_t plx_bits; | |
3138 | ||
3139 | plx_status = readl(priv(dev)->plx9080_iobase + PLX_INTRCS_REG); | |
3140 | status = readw(priv(dev)->main_iobase + HW_STATUS_REG); | |
3141 | ||
3142 | DEBUG_PRINT("cb_pcidas64: hw status 0x%x ", status); | |
3143 | DEBUG_PRINT("plx status 0x%x\n", plx_status); | |
3144 | ||
3145 | /* an interrupt before all the postconfig stuff gets done could | |
3146 | * cause a NULL dereference if we continue through the | |
3147 | * interrupt handler */ | |
3148 | if (dev->attached == 0) { | |
3149 | DEBUG_PRINT("cb_pcidas64: premature interrupt, ignoring", | |
3150 | status); | |
3151 | return IRQ_HANDLED; | |
3152 | } | |
3153 | handle_ai_interrupt(dev, status, plx_status); | |
3154 | handle_ao_interrupt(dev, status, plx_status); | |
3155 | ||
9ef4dea6 BP |
3156 | /* clear possible plx9080 interrupt sources */ |
3157 | if (plx_status & ICS_LDIA) { /* clear local doorbell interrupt */ | |
88b12a9a FMH |
3158 | plx_bits = readl(priv(dev)->plx9080_iobase + PLX_DBR_OUT_REG); |
3159 | writel(plx_bits, priv(dev)->plx9080_iobase + PLX_DBR_OUT_REG); | |
3160 | DEBUG_PRINT(" cleared local doorbell bits 0x%x\n", plx_bits); | |
3161 | } | |
3162 | ||
3163 | DEBUG_PRINT("exiting handler\n"); | |
3164 | ||
3165 | return IRQ_HANDLED; | |
3166 | } | |
3167 | ||
71b5f4f1 | 3168 | void abort_dma(struct comedi_device * dev, unsigned int channel) |
88b12a9a FMH |
3169 | { |
3170 | unsigned long flags; | |
3171 | ||
9ef4dea6 | 3172 | /* spinlock for plx dma control/status reg */ |
88b12a9a FMH |
3173 | comedi_spin_lock_irqsave(&dev->spinlock, flags); |
3174 | ||
3175 | plx9080_abort_dma(priv(dev)->plx9080_iobase, channel); | |
3176 | ||
3177 | comedi_spin_unlock_irqrestore(&dev->spinlock, flags); | |
3178 | } | |
3179 | ||
34c43922 | 3180 | static int ai_cancel(struct comedi_device * dev, struct comedi_subdevice * s) |
88b12a9a FMH |
3181 | { |
3182 | unsigned long flags; | |
3183 | ||
3184 | comedi_spin_lock_irqsave(&dev->spinlock, flags); | |
3185 | if (priv(dev)->ai_cmd_running == 0) { | |
3186 | comedi_spin_unlock_irqrestore(&dev->spinlock, flags); | |
3187 | return 0; | |
3188 | } | |
3189 | priv(dev)->ai_cmd_running = 0; | |
3190 | comedi_spin_unlock_irqrestore(&dev->spinlock, flags); | |
3191 | ||
3192 | disable_ai_pacing(dev); | |
3193 | ||
3194 | abort_dma(dev, 1); | |
3195 | ||
3196 | DEBUG_PRINT("ai canceled\n"); | |
3197 | return 0; | |
3198 | } | |
3199 | ||
34c43922 | 3200 | static int ao_winsn(struct comedi_device * dev, struct comedi_subdevice * s, |
90035c08 | 3201 | struct comedi_insn * insn, unsigned int * data) |
88b12a9a FMH |
3202 | { |
3203 | int chan = CR_CHAN(insn->chanspec); | |
3204 | int range = CR_RANGE(insn->chanspec); | |
3205 | ||
9ef4dea6 | 3206 | /* do some initializing */ |
88b12a9a FMH |
3207 | writew(0, priv(dev)->main_iobase + DAC_CONTROL0_REG); |
3208 | ||
9ef4dea6 | 3209 | /* set range */ |
88b12a9a FMH |
3210 | set_dac_range_bits(dev, &priv(dev)->dac_control1_bits, chan, range); |
3211 | writew(priv(dev)->dac_control1_bits, | |
3212 | priv(dev)->main_iobase + DAC_CONTROL1_REG); | |
3213 | ||
9ef4dea6 | 3214 | /* write to channel */ |
88b12a9a FMH |
3215 | if (board(dev)->layout == LAYOUT_4020) { |
3216 | writew(data[0] & 0xff, | |
3217 | priv(dev)->main_iobase + dac_lsb_4020_reg(chan)); | |
3218 | writew((data[0] >> 8) & 0xf, | |
3219 | priv(dev)->main_iobase + dac_msb_4020_reg(chan)); | |
3220 | } else { | |
3221 | writew(data[0], priv(dev)->main_iobase + dac_convert_reg(chan)); | |
3222 | } | |
3223 | ||
9ef4dea6 | 3224 | /* remember output value */ |
88b12a9a FMH |
3225 | priv(dev)->ao_value[chan] = data[0]; |
3226 | ||
3227 | return 1; | |
3228 | } | |
3229 | ||
34c43922 | 3230 | static int ao_readback_insn(struct comedi_device * dev, struct comedi_subdevice * s, |
90035c08 | 3231 | struct comedi_insn * insn, unsigned int * data) |
88b12a9a FMH |
3232 | { |
3233 | data[0] = priv(dev)->ao_value[CR_CHAN(insn->chanspec)]; | |
3234 | ||
3235 | return 1; | |
3236 | } | |
3237 | ||
ea6d0d4c | 3238 | static void set_dac_control0_reg(struct comedi_device * dev, const struct comedi_cmd * cmd) |
88b12a9a FMH |
3239 | { |
3240 | unsigned int bits = DAC_ENABLE_BIT | WAVEFORM_GATE_LEVEL_BIT | | |
3241 | WAVEFORM_GATE_ENABLE_BIT | WAVEFORM_GATE_SELECT_BIT; | |
3242 | ||
3243 | if (cmd->start_src == TRIG_EXT) { | |
3244 | bits |= WAVEFORM_TRIG_EXT_BITS; | |
3245 | if (cmd->start_arg & CR_INVERT) | |
3246 | bits |= WAVEFORM_TRIG_FALLING_BIT; | |
3247 | } else { | |
3248 | bits |= WAVEFORM_TRIG_SOFT_BITS; | |
3249 | } | |
3250 | if (cmd->scan_begin_src == TRIG_EXT) { | |
3251 | bits |= DAC_EXT_UPDATE_ENABLE_BIT; | |
3252 | if (cmd->scan_begin_arg & CR_INVERT) | |
3253 | bits |= DAC_EXT_UPDATE_FALLING_BIT; | |
3254 | } | |
3255 | writew(bits, priv(dev)->main_iobase + DAC_CONTROL0_REG); | |
3256 | } | |
3257 | ||
ea6d0d4c | 3258 | static void set_dac_control1_reg(struct comedi_device * dev, const struct comedi_cmd * cmd) |
88b12a9a FMH |
3259 | { |
3260 | int i; | |
3261 | ||
3262 | for (i = 0; i < cmd->chanlist_len; i++) { | |
3263 | int channel, range; | |
3264 | ||
3265 | channel = CR_CHAN(cmd->chanlist[i]); | |
3266 | range = CR_RANGE(cmd->chanlist[i]); | |
3267 | set_dac_range_bits(dev, &priv(dev)->dac_control1_bits, channel, | |
3268 | range); | |
3269 | } | |
3270 | priv(dev)->dac_control1_bits |= DAC_SW_GATE_BIT; | |
3271 | writew(priv(dev)->dac_control1_bits, | |
3272 | priv(dev)->main_iobase + DAC_CONTROL1_REG); | |
3273 | } | |
3274 | ||
ea6d0d4c | 3275 | static void set_dac_select_reg(struct comedi_device * dev, const struct comedi_cmd * cmd) |
88b12a9a FMH |
3276 | { |
3277 | uint16_t bits; | |
3278 | unsigned int first_channel, last_channel; | |
3279 | ||
3280 | first_channel = CR_CHAN(cmd->chanlist[0]); | |
3281 | last_channel = CR_CHAN(cmd->chanlist[cmd->chanlist_len - 1]); | |
3282 | if (last_channel < first_channel) | |
3283 | comedi_error(dev, "bug! last ao channel < first ao channel"); | |
3284 | ||
3285 | bits = (first_channel & 0x7) | (last_channel & 0x7) << 3; | |
3286 | ||
3287 | writew(bits, priv(dev)->main_iobase + DAC_SELECT_REG); | |
3288 | } | |
3289 | ||
ea6d0d4c | 3290 | static void set_dac_interval_regs(struct comedi_device * dev, const struct comedi_cmd * cmd) |
88b12a9a FMH |
3291 | { |
3292 | unsigned int divisor; | |
3293 | ||
3294 | if (cmd->scan_begin_src != TRIG_TIMER) | |
3295 | return; | |
3296 | ||
3297 | divisor = get_ao_divisor(cmd->scan_begin_arg, cmd->flags); | |
3298 | if (divisor > max_counter_value) { | |
3299 | comedi_error(dev, "bug! ao divisor too big"); | |
3300 | divisor = max_counter_value; | |
3301 | } | |
3302 | writew(divisor & 0xffff, | |
3303 | priv(dev)->main_iobase + DAC_SAMPLE_INTERVAL_LOWER_REG); | |
3304 | writew((divisor >> 16) & 0xff, | |
3305 | priv(dev)->main_iobase + DAC_SAMPLE_INTERVAL_UPPER_REG); | |
3306 | } | |
3307 | ||
71b5f4f1 | 3308 | static unsigned int load_ao_dma_buffer(struct comedi_device * dev, |
ea6d0d4c | 3309 | const struct comedi_cmd * cmd) |
88b12a9a FMH |
3310 | { |
3311 | unsigned int num_bytes, buffer_index, prev_buffer_index; | |
3312 | unsigned int next_bits; | |
3313 | ||
3314 | buffer_index = priv(dev)->ao_dma_index; | |
3315 | prev_buffer_index = prev_ao_dma_index(dev); | |
3316 | ||
3317 | DEBUG_PRINT("attempting to load ao buffer %i (0x%x)\n", buffer_index, | |
3318 | priv(dev)->ao_buffer_bus_addr[buffer_index]); | |
3319 | ||
3320 | num_bytes = comedi_buf_read_n_available(dev->write_subdev->async); | |
3321 | if (num_bytes > DMA_BUFFER_SIZE) | |
3322 | num_bytes = DMA_BUFFER_SIZE; | |
3323 | if (cmd->stop_src == TRIG_COUNT && num_bytes > priv(dev)->ao_count) | |
3324 | num_bytes = priv(dev)->ao_count; | |
3325 | num_bytes -= num_bytes % bytes_in_sample; | |
3326 | ||
3327 | if (num_bytes == 0) | |
3328 | return 0; | |
3329 | ||
3330 | DEBUG_PRINT("loading %i bytes\n", num_bytes); | |
3331 | ||
3332 | num_bytes = cfc_read_array_from_buffer(dev->write_subdev, | |
3333 | priv(dev)->ao_buffer[buffer_index], num_bytes); | |
3334 | priv(dev)->ao_dma_desc[buffer_index].transfer_size = | |
3335 | cpu_to_le32(num_bytes); | |
3336 | /* set end of chain bit so we catch underruns */ | |
3337 | next_bits = le32_to_cpu(priv(dev)->ao_dma_desc[buffer_index].next); | |
3338 | next_bits |= PLX_END_OF_CHAIN_BIT; | |
3339 | priv(dev)->ao_dma_desc[buffer_index].next = cpu_to_le32(next_bits); | |
3340 | /* clear end of chain bit on previous buffer now that we have set it | |
3341 | * for the last buffer */ | |
3342 | next_bits = le32_to_cpu(priv(dev)->ao_dma_desc[prev_buffer_index].next); | |
3343 | next_bits &= ~PLX_END_OF_CHAIN_BIT; | |
3344 | priv(dev)->ao_dma_desc[prev_buffer_index].next = cpu_to_le32(next_bits); | |
3345 | ||
3346 | priv(dev)->ao_dma_index = (buffer_index + 1) % AO_DMA_RING_COUNT; | |
3347 | priv(dev)->ao_count -= num_bytes; | |
3348 | ||
3349 | return num_bytes; | |
3350 | } | |
3351 | ||
ea6d0d4c | 3352 | static void load_ao_dma(struct comedi_device * dev, const struct comedi_cmd * cmd) |
88b12a9a FMH |
3353 | { |
3354 | unsigned int num_bytes; | |
3355 | unsigned int next_transfer_addr; | |
3356 | void *pci_addr_reg = | |
3357 | priv(dev)->plx9080_iobase + PLX_DMA0_PCI_ADDRESS_REG; | |
3358 | unsigned int buffer_index; | |
3359 | ||
3360 | do { | |
3361 | buffer_index = priv(dev)->ao_dma_index; | |
3362 | /* don't overwrite data that hasn't been transferred yet */ | |
3363 | next_transfer_addr = readl(pci_addr_reg); | |
3364 | if (next_transfer_addr >= | |
3365 | priv(dev)->ao_buffer_bus_addr[buffer_index] | |
3366 | && next_transfer_addr < | |
3367 | priv(dev)->ao_buffer_bus_addr[buffer_index] + | |
3368 | DMA_BUFFER_SIZE) | |
3369 | return; | |
3370 | num_bytes = load_ao_dma_buffer(dev, cmd); | |
3371 | } while (num_bytes >= DMA_BUFFER_SIZE); | |
3372 | } | |
3373 | ||
ea6d0d4c | 3374 | static int prep_ao_dma(struct comedi_device * dev, const struct comedi_cmd * cmd) |
88b12a9a FMH |
3375 | { |
3376 | unsigned int num_bytes; | |
3377 | int i; | |
3378 | ||
3379 | /* clear queue pointer too, since external queue has | |
3380 | * weird interactions with ao fifo */ | |
3381 | writew(0, priv(dev)->main_iobase + ADC_QUEUE_CLEAR_REG); | |
3382 | writew(0, priv(dev)->main_iobase + DAC_BUFFER_CLEAR_REG); | |
3383 | ||
3384 | num_bytes = (DAC_FIFO_SIZE / 2) * bytes_in_sample; | |
3385 | if (cmd->stop_src == TRIG_COUNT && | |
3386 | num_bytes / bytes_in_sample > priv(dev)->ao_count) | |
3387 | num_bytes = priv(dev)->ao_count * bytes_in_sample; | |
3388 | num_bytes = cfc_read_array_from_buffer(dev->write_subdev, | |
3389 | priv(dev)->ao_bounce_buffer, num_bytes); | |
3390 | for (i = 0; i < num_bytes / bytes_in_sample; i++) { | |
3391 | writew(priv(dev)->ao_bounce_buffer[i], | |
3392 | priv(dev)->main_iobase + DAC_FIFO_REG); | |
3393 | } | |
3394 | priv(dev)->ao_count -= num_bytes / bytes_in_sample; | |
3395 | if (cmd->stop_src == TRIG_COUNT && priv(dev)->ao_count == 0) | |
3396 | return 0; | |
3397 | num_bytes = load_ao_dma_buffer(dev, cmd); | |
3398 | if (num_bytes == 0) | |
3399 | return -1; | |
3400 | if (num_bytes >= DMA_BUFFER_SIZE) ; | |
3401 | load_ao_dma(dev, cmd); | |
3402 | ||
3403 | dma_start_sync(dev, 0); | |
3404 | ||
3405 | return 0; | |
3406 | } | |
3407 | ||
71b5f4f1 | 3408 | static inline int external_ai_queue_in_use(struct comedi_device * dev) |
88b12a9a FMH |
3409 | { |
3410 | if (dev->read_subdev->busy) | |
3411 | return 0; | |
3412 | if (board(dev)->layout == LAYOUT_4020) | |
3413 | return 0; | |
3414 | else if (use_internal_queue_6xxx(&dev->read_subdev->async->cmd)) | |
3415 | return 0; | |
3416 | return 1; | |
3417 | } | |
3418 | ||
34c43922 | 3419 | static int ao_cmd(struct comedi_device * dev, struct comedi_subdevice * s) |
88b12a9a | 3420 | { |
ea6d0d4c | 3421 | struct comedi_cmd *cmd = &s->async->cmd; |
88b12a9a FMH |
3422 | |
3423 | if (external_ai_queue_in_use(dev)) { | |
3424 | warn_external_queue(dev); | |
3425 | return -EBUSY; | |
3426 | } | |
3427 | /* disable analog output system during setup */ | |
3428 | writew(0x0, priv(dev)->main_iobase + DAC_CONTROL0_REG); | |
3429 | ||
3430 | priv(dev)->ao_dma_index = 0; | |
3431 | priv(dev)->ao_count = cmd->stop_arg * cmd->chanlist_len; | |
3432 | ||
3433 | set_dac_select_reg(dev, cmd); | |
3434 | set_dac_interval_regs(dev, cmd); | |
3435 | load_first_dma_descriptor(dev, 0, priv(dev)->ao_dma_desc_bus_addr | | |
3436 | PLX_DESC_IN_PCI_BIT | PLX_INTR_TERM_COUNT); | |
3437 | ||
3438 | set_dac_control1_reg(dev, cmd); | |
3439 | s->async->inttrig = ao_inttrig; | |
3440 | ||
3441 | return 0; | |
3442 | } | |
3443 | ||
34c43922 | 3444 | static int ao_inttrig(struct comedi_device * dev, struct comedi_subdevice * s, |
88b12a9a FMH |
3445 | unsigned int trig_num) |
3446 | { | |
ea6d0d4c | 3447 | struct comedi_cmd *cmd = &s->async->cmd; |
88b12a9a FMH |
3448 | int retval; |
3449 | ||
3450 | if (trig_num != 0) | |
3451 | return -EINVAL; | |
3452 | ||
3453 | retval = prep_ao_dma(dev, cmd); | |
3454 | if (retval < 0) | |
3455 | return -EPIPE; | |
3456 | ||
3457 | set_dac_control0_reg(dev, cmd); | |
3458 | ||
3459 | if (cmd->start_src == TRIG_INT) | |
3460 | writew(0, priv(dev)->main_iobase + DAC_START_REG); | |
3461 | ||
3462 | s->async->inttrig = NULL; | |
3463 | ||
3464 | return 0; | |
3465 | } | |
3466 | ||
34c43922 | 3467 | static int ao_cmdtest(struct comedi_device * dev, struct comedi_subdevice * s, |
ea6d0d4c | 3468 | struct comedi_cmd * cmd) |
88b12a9a FMH |
3469 | { |
3470 | int err = 0; | |
3471 | int tmp; | |
3472 | unsigned int tmp_arg; | |
3473 | int i; | |
3474 | ||
3475 | /* step 1: make sure trigger sources are trivially valid */ | |
3476 | ||
3477 | tmp = cmd->start_src; | |
3478 | cmd->start_src &= TRIG_INT | TRIG_EXT; | |
3479 | if (!cmd->start_src || tmp != cmd->start_src) | |
3480 | err++; | |
3481 | ||
3482 | tmp = cmd->scan_begin_src; | |
3483 | cmd->scan_begin_src &= TRIG_TIMER | TRIG_EXT; | |
3484 | if (!cmd->scan_begin_src || tmp != cmd->scan_begin_src) | |
3485 | err++; | |
3486 | ||
3487 | tmp = cmd->convert_src; | |
3488 | cmd->convert_src &= TRIG_NOW; | |
3489 | if (!cmd->convert_src || tmp != cmd->convert_src) | |
3490 | err++; | |
3491 | ||
3492 | tmp = cmd->scan_end_src; | |
3493 | cmd->scan_end_src &= TRIG_COUNT; | |
3494 | if (!cmd->scan_end_src || tmp != cmd->scan_end_src) | |
3495 | err++; | |
3496 | ||
3497 | tmp = cmd->stop_src; | |
3498 | cmd->stop_src &= TRIG_NONE; | |
3499 | if (!cmd->stop_src || tmp != cmd->stop_src) | |
3500 | err++; | |
3501 | ||
3502 | if (err) | |
3503 | return 1; | |
3504 | ||
3505 | /* step 2: make sure trigger sources are unique and mutually compatible */ | |
3506 | ||
9ef4dea6 | 3507 | /* uniqueness check */ |
88b12a9a FMH |
3508 | if (cmd->start_src != TRIG_INT && cmd->start_src != TRIG_EXT) |
3509 | err++; | |
3510 | if (cmd->scan_begin_src != TRIG_TIMER && | |
3511 | cmd->scan_begin_src != TRIG_EXT) | |
3512 | err++; | |
3513 | ||
9ef4dea6 | 3514 | /* compatibility check */ |
88b12a9a FMH |
3515 | if (cmd->convert_src == TRIG_EXT && cmd->scan_begin_src == TRIG_TIMER) |
3516 | err++; | |
3517 | if (cmd->stop_src != TRIG_COUNT && | |
3518 | cmd->stop_src != TRIG_NONE && cmd->stop_src != TRIG_EXT) | |
3519 | err++; | |
3520 | ||
3521 | if (err) | |
3522 | return 2; | |
3523 | ||
3524 | /* step 3: make sure arguments are trivially compatible */ | |
3525 | ||
3526 | if (cmd->scan_begin_src == TRIG_TIMER) { | |
3527 | if (cmd->scan_begin_arg < board(dev)->ao_scan_speed) { | |
3528 | cmd->scan_begin_arg = board(dev)->ao_scan_speed; | |
3529 | err++; | |
3530 | } | |
3531 | if (get_ao_divisor(cmd->scan_begin_arg, | |
3532 | cmd->flags) > max_counter_value) { | |
3533 | cmd->scan_begin_arg = | |
3534 | (max_counter_value + 2) * TIMER_BASE; | |
3535 | err++; | |
3536 | } | |
3537 | } | |
3538 | ||
3539 | if (!cmd->chanlist_len) { | |
3540 | cmd->chanlist_len = 1; | |
3541 | err++; | |
3542 | } | |
3543 | if (cmd->scan_end_arg != cmd->chanlist_len) { | |
3544 | cmd->scan_end_arg = cmd->chanlist_len; | |
3545 | err++; | |
3546 | } | |
3547 | ||
3548 | if (err) | |
3549 | return 3; | |
3550 | ||
3551 | /* step 4: fix up any arguments */ | |
3552 | ||
3553 | if (cmd->scan_begin_src == TRIG_TIMER) { | |
3554 | tmp_arg = cmd->scan_begin_arg; | |
3555 | cmd->scan_begin_arg = | |
3556 | get_divisor(cmd->scan_begin_arg, | |
3557 | cmd->flags) * TIMER_BASE; | |
3558 | if (tmp_arg != cmd->scan_begin_arg) | |
3559 | err++; | |
3560 | } | |
3561 | ||
3562 | if (err) | |
3563 | return 4; | |
3564 | ||
3565 | if (cmd->chanlist) { | |
3566 | unsigned int first_channel = CR_CHAN(cmd->chanlist[0]); | |
3567 | for (i = 1; i < cmd->chanlist_len; i++) { | |
3568 | if (CR_CHAN(cmd->chanlist[i]) != first_channel + i) { | |
3569 | comedi_error(dev, | |
3570 | "chanlist must use consecutive channels"); | |
3571 | err++; | |
3572 | break; | |
3573 | } | |
3574 | } | |
3575 | } | |
3576 | ||
3577 | if (err) | |
3578 | return 5; | |
3579 | ||
3580 | return 0; | |
3581 | } | |
3582 | ||
34c43922 | 3583 | static int ao_cancel(struct comedi_device * dev, struct comedi_subdevice * s) |
88b12a9a FMH |
3584 | { |
3585 | writew(0x0, priv(dev)->main_iobase + DAC_CONTROL0_REG); | |
3586 | abort_dma(dev, 0); | |
3587 | return 0; | |
3588 | } | |
3589 | ||
3590 | static int dio_callback(int dir, int port, int data, unsigned long iobase) | |
3591 | { | |
3592 | if (dir) { | |
3593 | writeb(data, (void *)(iobase + port)); | |
3594 | DEBUG_PRINT("wrote 0x%x to port %i\n", data, port); | |
3595 | return 0; | |
3596 | } else { | |
3597 | return readb((void *)(iobase + port)); | |
3598 | } | |
3599 | } | |
3600 | ||
3601 | static int dio_callback_4020(int dir, int port, int data, unsigned long iobase) | |
3602 | { | |
3603 | if (dir) { | |
3604 | writew(data, (void *)(iobase + 2 * port)); | |
3605 | return 0; | |
3606 | } else { | |
3607 | return readw((void *)(iobase + 2 * port)); | |
3608 | } | |
3609 | } | |
3610 | ||
34c43922 | 3611 | static int di_rbits(struct comedi_device * dev, struct comedi_subdevice * s, |
90035c08 | 3612 | struct comedi_insn * insn, unsigned int * data) |
88b12a9a | 3613 | { |
790c5541 | 3614 | unsigned int bits; |
88b12a9a FMH |
3615 | |
3616 | bits = readb(priv(dev)->dio_counter_iobase + DI_REG); | |
3617 | bits &= 0xf; | |
3618 | data[1] = bits; | |
3619 | data[0] = 0; | |
3620 | ||
3621 | return 2; | |
3622 | } | |
3623 | ||
34c43922 | 3624 | static int do_wbits(struct comedi_device * dev, struct comedi_subdevice * s, |
90035c08 | 3625 | struct comedi_insn * insn, unsigned int * data) |
88b12a9a FMH |
3626 | { |
3627 | data[0] &= 0xf; | |
9ef4dea6 | 3628 | /* zero bits we are going to change */ |
88b12a9a | 3629 | s->state &= ~data[0]; |
9ef4dea6 | 3630 | /* set new bits */ |
88b12a9a FMH |
3631 | s->state |= data[0] & data[1]; |
3632 | ||
3633 | writeb(s->state, priv(dev)->dio_counter_iobase + DO_REG); | |
3634 | ||
3635 | data[1] = s->state; | |
3636 | ||
3637 | return 2; | |
3638 | } | |
3639 | ||
34c43922 | 3640 | static int dio_60xx_config_insn(struct comedi_device * dev, struct comedi_subdevice * s, |
90035c08 | 3641 | struct comedi_insn * insn, unsigned int * data) |
88b12a9a FMH |
3642 | { |
3643 | unsigned int mask; | |
3644 | ||
3645 | mask = 1 << CR_CHAN(insn->chanspec); | |
3646 | ||
3647 | switch (data[0]) { | |
3648 | case INSN_CONFIG_DIO_INPUT: | |
3649 | s->io_bits &= ~mask; | |
3650 | break; | |
3651 | case INSN_CONFIG_DIO_OUTPUT: | |
3652 | s->io_bits |= mask; | |
3653 | break; | |
3654 | case INSN_CONFIG_DIO_QUERY: | |
3655 | data[1] = (s->io_bits & mask) ? COMEDI_OUTPUT : COMEDI_INPUT; | |
3656 | return 2; | |
3657 | default: | |
3658 | return -EINVAL; | |
3659 | } | |
3660 | ||
3661 | writeb(s->io_bits, | |
3662 | priv(dev)->dio_counter_iobase + DIO_DIRECTION_60XX_REG); | |
3663 | ||
3664 | return 1; | |
3665 | } | |
3666 | ||
34c43922 | 3667 | static int dio_60xx_wbits(struct comedi_device * dev, struct comedi_subdevice * s, |
90035c08 | 3668 | struct comedi_insn * insn, unsigned int * data) |
88b12a9a FMH |
3669 | { |
3670 | if (data[0]) { | |
3671 | s->state &= ~data[0]; | |
3672 | s->state |= (data[0] & data[1]); | |
3673 | writeb(s->state, | |
3674 | priv(dev)->dio_counter_iobase + DIO_DATA_60XX_REG); | |
3675 | } | |
3676 | ||
3677 | data[1] = readb(priv(dev)->dio_counter_iobase + DIO_DATA_60XX_REG); | |
3678 | ||
3679 | return 2; | |
3680 | } | |
3681 | ||
71b5f4f1 | 3682 | static void caldac_write(struct comedi_device * dev, unsigned int channel, |
88b12a9a FMH |
3683 | unsigned int value) |
3684 | { | |
3685 | priv(dev)->caldac_state[channel] = value; | |
3686 | ||
3687 | switch (board(dev)->layout) { | |
3688 | case LAYOUT_60XX: | |
3689 | case LAYOUT_64XX: | |
3690 | caldac_8800_write(dev, channel, value); | |
3691 | break; | |
3692 | case LAYOUT_4020: | |
3693 | caldac_i2c_write(dev, channel, value); | |
3694 | break; | |
3695 | default: | |
3696 | break; | |
3697 | } | |
3698 | } | |
3699 | ||
34c43922 | 3700 | static int calib_write_insn(struct comedi_device * dev, struct comedi_subdevice * s, |
90035c08 | 3701 | struct comedi_insn * insn, unsigned int * data) |
88b12a9a FMH |
3702 | { |
3703 | int channel = CR_CHAN(insn->chanspec); | |
3704 | ||
3705 | /* return immediately if setting hasn't changed, since | |
3706 | * programming these things is slow */ | |
3707 | if (priv(dev)->caldac_state[channel] == data[0]) | |
3708 | return 1; | |
3709 | ||
3710 | caldac_write(dev, channel, data[0]); | |
3711 | ||
3712 | return 1; | |
3713 | } | |
3714 | ||
34c43922 | 3715 | static int calib_read_insn(struct comedi_device * dev, struct comedi_subdevice * s, |
90035c08 | 3716 | struct comedi_insn * insn, unsigned int * data) |
88b12a9a FMH |
3717 | { |
3718 | unsigned int channel = CR_CHAN(insn->chanspec); | |
3719 | ||
3720 | data[0] = priv(dev)->caldac_state[channel]; | |
3721 | ||
3722 | return 1; | |
3723 | } | |
3724 | ||
71b5f4f1 | 3725 | static void ad8402_write(struct comedi_device * dev, unsigned int channel, |
88b12a9a FMH |
3726 | unsigned int value) |
3727 | { | |
3728 | static const int bitstream_length = 10; | |
3729 | unsigned int bit, register_bits; | |
3730 | unsigned int bitstream = ((channel & 0x3) << 8) | (value & 0xff); | |
3731 | static const int ad8402_comedi_udelay = 1; | |
3732 | ||
3733 | priv(dev)->ad8402_state[channel] = value; | |
3734 | ||
3735 | register_bits = SELECT_8402_64XX_BIT; | |
3736 | comedi_udelay(ad8402_comedi_udelay); | |
3737 | writew(register_bits, priv(dev)->main_iobase + CALIBRATION_REG); | |
3738 | ||
3739 | for (bit = 1 << (bitstream_length - 1); bit; bit >>= 1) { | |
3740 | if (bitstream & bit) | |
3741 | register_bits |= SERIAL_DATA_IN_BIT; | |
3742 | else | |
3743 | register_bits &= ~SERIAL_DATA_IN_BIT; | |
3744 | comedi_udelay(ad8402_comedi_udelay); | |
3745 | writew(register_bits, priv(dev)->main_iobase + CALIBRATION_REG); | |
3746 | comedi_udelay(ad8402_comedi_udelay); | |
3747 | writew(register_bits | SERIAL_CLOCK_BIT, | |
3748 | priv(dev)->main_iobase + CALIBRATION_REG); | |
3749 | } | |
3750 | ||
3751 | comedi_udelay(ad8402_comedi_udelay); | |
3752 | writew(0, priv(dev)->main_iobase + CALIBRATION_REG); | |
3753 | } | |
3754 | ||
3755 | /* for pci-das6402/16, channel 0 is analog input gain and channel 1 is offset */ | |
34c43922 | 3756 | static int ad8402_write_insn(struct comedi_device * dev, struct comedi_subdevice * s, |
90035c08 | 3757 | struct comedi_insn * insn, unsigned int * data) |
88b12a9a FMH |
3758 | { |
3759 | int channel = CR_CHAN(insn->chanspec); | |
3760 | ||
3761 | /* return immediately if setting hasn't changed, since | |
3762 | * programming these things is slow */ | |
3763 | if (priv(dev)->ad8402_state[channel] == data[0]) | |
3764 | return 1; | |
3765 | ||
3766 | priv(dev)->ad8402_state[channel] = data[0]; | |
3767 | ||
3768 | ad8402_write(dev, channel, data[0]); | |
3769 | ||
3770 | return 1; | |
3771 | } | |
3772 | ||
34c43922 | 3773 | static int ad8402_read_insn(struct comedi_device * dev, struct comedi_subdevice * s, |
90035c08 | 3774 | struct comedi_insn * insn, unsigned int * data) |
88b12a9a FMH |
3775 | { |
3776 | unsigned int channel = CR_CHAN(insn->chanspec); | |
3777 | ||
3778 | data[0] = priv(dev)->ad8402_state[channel]; | |
3779 | ||
3780 | return 1; | |
3781 | } | |
3782 | ||
71b5f4f1 | 3783 | static uint16_t read_eeprom(struct comedi_device * dev, uint8_t address) |
88b12a9a FMH |
3784 | { |
3785 | static const int bitstream_length = 11; | |
3786 | static const int read_command = 0x6; | |
3787 | unsigned int bitstream = (read_command << 8) | address; | |
3788 | unsigned int bit; | |
3789 | void *const plx_control_addr = | |
3790 | priv(dev)->plx9080_iobase + PLX_CONTROL_REG; | |
3791 | uint16_t value; | |
3792 | static const int value_length = 16; | |
3793 | static const int eeprom_comedi_udelay = 1; | |
3794 | ||
3795 | comedi_udelay(eeprom_comedi_udelay); | |
3796 | priv(dev)->plx_control_bits &= ~CTL_EE_CLK & ~CTL_EE_CS; | |
9ef4dea6 | 3797 | /* make sure we don't send anything to the i2c bus on 4020 */ |
88b12a9a FMH |
3798 | priv(dev)->plx_control_bits |= CTL_USERO; |
3799 | writel(priv(dev)->plx_control_bits, plx_control_addr); | |
9ef4dea6 | 3800 | /* activate serial eeprom */ |
88b12a9a FMH |
3801 | comedi_udelay(eeprom_comedi_udelay); |
3802 | priv(dev)->plx_control_bits |= CTL_EE_CS; | |
3803 | writel(priv(dev)->plx_control_bits, plx_control_addr); | |
3804 | ||
9ef4dea6 | 3805 | /* write read command and desired memory address */ |
88b12a9a | 3806 | for (bit = 1 << (bitstream_length - 1); bit; bit >>= 1) { |
9ef4dea6 | 3807 | /* set bit to be written */ |
88b12a9a FMH |
3808 | comedi_udelay(eeprom_comedi_udelay); |
3809 | if (bitstream & bit) | |
3810 | priv(dev)->plx_control_bits |= CTL_EE_W; | |
3811 | else | |
3812 | priv(dev)->plx_control_bits &= ~CTL_EE_W; | |
3813 | writel(priv(dev)->plx_control_bits, plx_control_addr); | |
9ef4dea6 | 3814 | /* clock in bit */ |
88b12a9a FMH |
3815 | comedi_udelay(eeprom_comedi_udelay); |
3816 | priv(dev)->plx_control_bits |= CTL_EE_CLK; | |
3817 | writel(priv(dev)->plx_control_bits, plx_control_addr); | |
3818 | comedi_udelay(eeprom_comedi_udelay); | |
3819 | priv(dev)->plx_control_bits &= ~CTL_EE_CLK; | |
3820 | writel(priv(dev)->plx_control_bits, plx_control_addr); | |
3821 | } | |
9ef4dea6 | 3822 | /* read back value from eeprom memory location */ |
88b12a9a FMH |
3823 | value = 0; |
3824 | for (bit = 1 << (value_length - 1); bit; bit >>= 1) { | |
9ef4dea6 | 3825 | /* clock out bit */ |
88b12a9a FMH |
3826 | comedi_udelay(eeprom_comedi_udelay); |
3827 | priv(dev)->plx_control_bits |= CTL_EE_CLK; | |
3828 | writel(priv(dev)->plx_control_bits, plx_control_addr); | |
3829 | comedi_udelay(eeprom_comedi_udelay); | |
3830 | priv(dev)->plx_control_bits &= ~CTL_EE_CLK; | |
3831 | writel(priv(dev)->plx_control_bits, plx_control_addr); | |
3832 | comedi_udelay(eeprom_comedi_udelay); | |
3833 | if (readl(plx_control_addr) & CTL_EE_R) | |
3834 | value |= bit; | |
3835 | } | |
3836 | ||
9ef4dea6 | 3837 | /* deactivate eeprom serial input */ |
88b12a9a FMH |
3838 | comedi_udelay(eeprom_comedi_udelay); |
3839 | priv(dev)->plx_control_bits &= ~CTL_EE_CS; | |
3840 | writel(priv(dev)->plx_control_bits, plx_control_addr); | |
3841 | ||
3842 | return value; | |
3843 | } | |
3844 | ||
34c43922 | 3845 | static int eeprom_read_insn(struct comedi_device * dev, struct comedi_subdevice * s, |
90035c08 | 3846 | struct comedi_insn * insn, unsigned int * data) |
88b12a9a FMH |
3847 | { |
3848 | data[0] = read_eeprom(dev, CR_CHAN(insn->chanspec)); | |
3849 | ||
3850 | return 1; | |
3851 | } | |
3852 | ||
3853 | /* utility function that rounds desired timing to an achievable time, and | |
3854 | * sets cmd members appropriately. | |
3855 | * adc paces conversions from master clock by dividing by (x + 3) where x is 24 bit number | |
3856 | */ | |
ea6d0d4c | 3857 | static void check_adc_timing(struct comedi_device *dev, struct comedi_cmd *cmd) |
88b12a9a FMH |
3858 | { |
3859 | unsigned int convert_divisor = 0, scan_divisor; | |
3860 | static const int min_convert_divisor = 3; | |
3861 | static const int max_convert_divisor = | |
3862 | max_counter_value + min_convert_divisor; | |
3863 | static const int min_scan_divisor_4020 = 2; | |
3864 | unsigned long long max_scan_divisor, min_scan_divisor; | |
3865 | ||
3866 | if (cmd->convert_src == TRIG_TIMER) { | |
3867 | if (board(dev)->layout == LAYOUT_4020) { | |
3868 | cmd->convert_arg = 0; | |
3869 | } else { | |
3870 | convert_divisor = | |
3871 | get_divisor(cmd->convert_arg, cmd->flags); | |
3872 | if (convert_divisor > max_convert_divisor) | |
3873 | convert_divisor = max_convert_divisor; | |
3874 | if (convert_divisor < min_convert_divisor) | |
3875 | convert_divisor = min_convert_divisor; | |
3876 | cmd->convert_arg = convert_divisor * TIMER_BASE; | |
3877 | } | |
3878 | } else if (cmd->convert_src == TRIG_NOW) | |
3879 | cmd->convert_arg = 0; | |
3880 | ||
3881 | if (cmd->scan_begin_src == TRIG_TIMER) { | |
3882 | scan_divisor = get_divisor(cmd->scan_begin_arg, cmd->flags); | |
3883 | if (cmd->convert_src == TRIG_TIMER) { | |
9ef4dea6 | 3884 | /* XXX check for integer overflows */ |
88b12a9a FMH |
3885 | min_scan_divisor = convert_divisor * cmd->chanlist_len; |
3886 | max_scan_divisor = | |
3887 | (convert_divisor * cmd->chanlist_len - 1) + | |
3888 | max_counter_value; | |
3889 | } else { | |
3890 | min_scan_divisor = min_scan_divisor_4020; | |
3891 | max_scan_divisor = max_counter_value + min_scan_divisor; | |
3892 | } | |
3893 | if (scan_divisor > max_scan_divisor) | |
3894 | scan_divisor = max_scan_divisor; | |
3895 | if (scan_divisor < min_scan_divisor) | |
3896 | scan_divisor = min_scan_divisor; | |
3897 | cmd->scan_begin_arg = scan_divisor * TIMER_BASE; | |
3898 | } | |
3899 | ||
3900 | return; | |
3901 | } | |
3902 | ||
3903 | /* Gets nearest achievable timing given master clock speed, does not | |
3904 | * take into account possible minimum/maximum divisor values. Used | |
3905 | * by other timing checking functions. */ | |
3906 | static unsigned int get_divisor(unsigned int ns, unsigned int flags) | |
3907 | { | |
3908 | unsigned int divisor; | |
3909 | ||
3910 | switch (flags & TRIG_ROUND_MASK) { | |
3911 | case TRIG_ROUND_UP: | |
3912 | divisor = (ns + TIMER_BASE - 1) / TIMER_BASE; | |
3913 | break; | |
3914 | case TRIG_ROUND_DOWN: | |
3915 | divisor = ns / TIMER_BASE; | |
3916 | break; | |
3917 | case TRIG_ROUND_NEAREST: | |
3918 | default: | |
3919 | divisor = (ns + TIMER_BASE / 2) / TIMER_BASE; | |
3920 | break; | |
3921 | } | |
3922 | return divisor; | |
3923 | } | |
3924 | ||
3925 | static unsigned int get_ao_divisor(unsigned int ns, unsigned int flags) | |
3926 | { | |
3927 | return get_divisor(ns, flags) - 2; | |
3928 | } | |
3929 | ||
9ef4dea6 | 3930 | /* adjusts the size of hardware fifo (which determines block size for dma xfers) */ |
71b5f4f1 | 3931 | static int set_ai_fifo_size(struct comedi_device * dev, unsigned int num_samples) |
88b12a9a FMH |
3932 | { |
3933 | unsigned int num_fifo_entries; | |
3934 | int retval; | |
675935dd | 3935 | const struct hw_fifo_info *const fifo = board(dev)->ai_fifo; |
88b12a9a FMH |
3936 | |
3937 | num_fifo_entries = num_samples / fifo->sample_packing_ratio; | |
3938 | ||
3939 | retval = set_ai_fifo_segment_length(dev, | |
3940 | num_fifo_entries / fifo->num_segments); | |
3941 | if (retval < 0) | |
3942 | return retval; | |
3943 | ||
3944 | num_samples = retval * fifo->num_segments * fifo->sample_packing_ratio; | |
3945 | ||
3946 | DEBUG_PRINT("set hardware fifo size to %i\n", num_samples); | |
3947 | ||
3948 | return num_samples; | |
3949 | } | |
3950 | ||
9ef4dea6 | 3951 | /* query length of fifo */ |
71b5f4f1 | 3952 | static unsigned int ai_fifo_size(struct comedi_device * dev) |
88b12a9a FMH |
3953 | { |
3954 | return priv(dev)->ai_fifo_segment_length * | |
3955 | board(dev)->ai_fifo->num_segments * | |
3956 | board(dev)->ai_fifo->sample_packing_ratio; | |
3957 | } | |
3958 | ||
71b5f4f1 | 3959 | static int set_ai_fifo_segment_length(struct comedi_device * dev, |
88b12a9a FMH |
3960 | unsigned int num_entries) |
3961 | { | |
3962 | static const int increment_size = 0x100; | |
675935dd | 3963 | const struct hw_fifo_info *const fifo = board(dev)->ai_fifo; |
88b12a9a FMH |
3964 | unsigned int num_increments; |
3965 | uint16_t bits; | |
3966 | ||
3967 | if (num_entries < increment_size) | |
3968 | num_entries = increment_size; | |
3969 | if (num_entries > fifo->max_segment_length) | |
3970 | num_entries = fifo->max_segment_length; | |
3971 | ||
9ef4dea6 | 3972 | /* 1 == 256 entries, 2 == 512 entries, etc */ |
88b12a9a FMH |
3973 | num_increments = (num_entries + increment_size / 2) / increment_size; |
3974 | ||
3975 | bits = (~(num_increments - 1)) & fifo->fifo_size_reg_mask; | |
3976 | priv(dev)->fifo_size_bits &= ~fifo->fifo_size_reg_mask; | |
3977 | priv(dev)->fifo_size_bits |= bits; | |
3978 | writew(priv(dev)->fifo_size_bits, | |
3979 | priv(dev)->main_iobase + FIFO_SIZE_REG); | |
3980 | ||
3981 | priv(dev)->ai_fifo_segment_length = num_increments * increment_size; | |
3982 | ||
3983 | DEBUG_PRINT("set hardware fifo segment length to %i\n", | |
3984 | priv(dev)->ai_fifo_segment_length); | |
3985 | ||
3986 | return priv(dev)->ai_fifo_segment_length; | |
3987 | } | |
3988 | ||
3989 | /* pci-6025 8800 caldac: | |
3990 | * address 0 == dac channel 0 offset | |
3991 | * address 1 == dac channel 0 gain | |
3992 | * address 2 == dac channel 1 offset | |
3993 | * address 3 == dac channel 1 gain | |
3994 | * address 4 == fine adc offset | |
3995 | * address 5 == coarse adc offset | |
3996 | * address 6 == coarse adc gain | |
3997 | * address 7 == fine adc gain | |
3998 | */ | |
3999 | /* pci-6402/16 uses all 8 channels for dac: | |
4000 | * address 0 == dac channel 0 fine gain | |
4001 | * address 1 == dac channel 0 coarse gain | |
4002 | * address 2 == dac channel 0 coarse offset | |
4003 | * address 3 == dac channel 1 coarse offset | |
4004 | * address 4 == dac channel 1 fine gain | |
4005 | * address 5 == dac channel 1 coarse gain | |
4006 | * address 6 == dac channel 0 fine offset | |
4007 | * address 7 == dac channel 1 fine offset | |
4008 | */ | |
4009 | ||
71b5f4f1 | 4010 | static int caldac_8800_write(struct comedi_device * dev, unsigned int address, |
88b12a9a FMH |
4011 | uint8_t value) |
4012 | { | |
4013 | static const int num_caldac_channels = 8; | |
4014 | static const int bitstream_length = 11; | |
4015 | unsigned int bitstream = ((address & 0x7) << 8) | value; | |
4016 | unsigned int bit, register_bits; | |
4017 | static const int caldac_8800_udelay = 1; | |
4018 | ||
4019 | if (address >= num_caldac_channels) { | |
4020 | comedi_error(dev, "illegal caldac channel"); | |
4021 | return -1; | |
4022 | } | |
4023 | for (bit = 1 << (bitstream_length - 1); bit; bit >>= 1) { | |
4024 | register_bits = 0; | |
4025 | if (bitstream & bit) | |
4026 | register_bits |= SERIAL_DATA_IN_BIT; | |
4027 | comedi_udelay(caldac_8800_udelay); | |
4028 | writew(register_bits, priv(dev)->main_iobase + CALIBRATION_REG); | |
4029 | register_bits |= SERIAL_CLOCK_BIT; | |
4030 | comedi_udelay(caldac_8800_udelay); | |
4031 | writew(register_bits, priv(dev)->main_iobase + CALIBRATION_REG); | |
4032 | } | |
4033 | comedi_udelay(caldac_8800_udelay); | |
4034 | writew(SELECT_8800_BIT, priv(dev)->main_iobase + CALIBRATION_REG); | |
4035 | comedi_udelay(caldac_8800_udelay); | |
4036 | writew(0, priv(dev)->main_iobase + CALIBRATION_REG); | |
4037 | comedi_udelay(caldac_8800_udelay); | |
4038 | return 0; | |
4039 | } | |
4040 | ||
9ef4dea6 | 4041 | /* 4020 caldacs */ |
71b5f4f1 | 4042 | static int caldac_i2c_write(struct comedi_device * dev, unsigned int caldac_channel, |
88b12a9a FMH |
4043 | unsigned int value) |
4044 | { | |
4045 | uint8_t serial_bytes[3]; | |
4046 | uint8_t i2c_addr; | |
4047 | enum pointer_bits { | |
9ef4dea6 | 4048 | /* manual has gain and offset bits switched */ |
88b12a9a FMH |
4049 | OFFSET_0_2 = 0x1, |
4050 | GAIN_0_2 = 0x2, | |
4051 | OFFSET_1_3 = 0x4, | |
4052 | GAIN_1_3 = 0x8, | |
4053 | }; | |
4054 | enum data_bits { | |
4055 | NOT_CLEAR_REGISTERS = 0x20, | |
4056 | }; | |
4057 | ||
4058 | switch (caldac_channel) { | |
9ef4dea6 | 4059 | case 0: /* chan 0 offset */ |
88b12a9a FMH |
4060 | i2c_addr = CALDAC0_I2C_ADDR; |
4061 | serial_bytes[0] = OFFSET_0_2; | |
4062 | break; | |
9ef4dea6 | 4063 | case 1: /* chan 1 offset */ |
88b12a9a FMH |
4064 | i2c_addr = CALDAC0_I2C_ADDR; |
4065 | serial_bytes[0] = OFFSET_1_3; | |
4066 | break; | |
9ef4dea6 | 4067 | case 2: /* chan 2 offset */ |
88b12a9a FMH |
4068 | i2c_addr = CALDAC1_I2C_ADDR; |
4069 | serial_bytes[0] = OFFSET_0_2; | |
4070 | break; | |
9ef4dea6 | 4071 | case 3: /* chan 3 offset */ |
88b12a9a FMH |
4072 | i2c_addr = CALDAC1_I2C_ADDR; |
4073 | serial_bytes[0] = OFFSET_1_3; | |
4074 | break; | |
9ef4dea6 | 4075 | case 4: /* chan 0 gain */ |
88b12a9a FMH |
4076 | i2c_addr = CALDAC0_I2C_ADDR; |
4077 | serial_bytes[0] = GAIN_0_2; | |
4078 | break; | |
9ef4dea6 | 4079 | case 5: /* chan 1 gain */ |
88b12a9a FMH |
4080 | i2c_addr = CALDAC0_I2C_ADDR; |
4081 | serial_bytes[0] = GAIN_1_3; | |
4082 | break; | |
9ef4dea6 | 4083 | case 6: /* chan 2 gain */ |
88b12a9a FMH |
4084 | i2c_addr = CALDAC1_I2C_ADDR; |
4085 | serial_bytes[0] = GAIN_0_2; | |
4086 | break; | |
9ef4dea6 | 4087 | case 7: /* chan 3 gain */ |
88b12a9a FMH |
4088 | i2c_addr = CALDAC1_I2C_ADDR; |
4089 | serial_bytes[0] = GAIN_1_3; | |
4090 | break; | |
4091 | default: | |
4092 | comedi_error(dev, "invalid caldac channel\n"); | |
4093 | return -1; | |
4094 | break; | |
4095 | } | |
4096 | serial_bytes[1] = NOT_CLEAR_REGISTERS | ((value >> 8) & 0xf); | |
4097 | serial_bytes[2] = value & 0xff; | |
4098 | i2c_write(dev, i2c_addr, serial_bytes, 3); | |
4099 | return 0; | |
4100 | } | |
4101 | ||
9ef4dea6 | 4102 | /* Their i2c requires a huge delay on setting clock or data high for some reason */ |
88b12a9a FMH |
4103 | static const int i2c_high_comedi_udelay = 1000; |
4104 | static const int i2c_low_comedi_udelay = 10; | |
4105 | ||
9ef4dea6 | 4106 | /* set i2c data line high or low */ |
71b5f4f1 | 4107 | static void i2c_set_sda(struct comedi_device * dev, int state) |
88b12a9a FMH |
4108 | { |
4109 | static const int data_bit = CTL_EE_W; | |
4110 | void *plx_control_addr = priv(dev)->plx9080_iobase + PLX_CONTROL_REG; | |
4111 | ||
4112 | if (state) { | |
9ef4dea6 | 4113 | /* set data line high */ |
88b12a9a FMH |
4114 | priv(dev)->plx_control_bits &= ~data_bit; |
4115 | writel(priv(dev)->plx_control_bits, plx_control_addr); | |
4116 | comedi_udelay(i2c_high_comedi_udelay); | |
9ef4dea6 | 4117 | } else /* set data line low */ |
88b12a9a FMH |
4118 | { |
4119 | priv(dev)->plx_control_bits |= data_bit; | |
4120 | writel(priv(dev)->plx_control_bits, plx_control_addr); | |
4121 | comedi_udelay(i2c_low_comedi_udelay); | |
4122 | } | |
4123 | } | |
4124 | ||
9ef4dea6 | 4125 | /* set i2c clock line high or low */ |
71b5f4f1 | 4126 | static void i2c_set_scl(struct comedi_device * dev, int state) |
88b12a9a FMH |
4127 | { |
4128 | static const int clock_bit = CTL_USERO; | |
4129 | void *plx_control_addr = priv(dev)->plx9080_iobase + PLX_CONTROL_REG; | |
4130 | ||
4131 | if (state) { | |
9ef4dea6 | 4132 | /* set clock line high */ |
88b12a9a FMH |
4133 | priv(dev)->plx_control_bits &= ~clock_bit; |
4134 | writel(priv(dev)->plx_control_bits, plx_control_addr); | |
4135 | comedi_udelay(i2c_high_comedi_udelay); | |
9ef4dea6 | 4136 | } else /* set clock line low */ |
88b12a9a FMH |
4137 | { |
4138 | priv(dev)->plx_control_bits |= clock_bit; | |
4139 | writel(priv(dev)->plx_control_bits, plx_control_addr); | |
4140 | comedi_udelay(i2c_low_comedi_udelay); | |
4141 | } | |
4142 | } | |
4143 | ||
71b5f4f1 | 4144 | static void i2c_write_byte(struct comedi_device * dev, uint8_t byte) |
88b12a9a FMH |
4145 | { |
4146 | uint8_t bit; | |
4147 | unsigned int num_bits = 8; | |
4148 | ||
4149 | DEBUG_PRINT("writing to i2c byte 0x%x\n", byte); | |
4150 | ||
4151 | for (bit = 1 << (num_bits - 1); bit; bit >>= 1) { | |
4152 | i2c_set_scl(dev, 0); | |
4153 | if ((byte & bit)) | |
4154 | i2c_set_sda(dev, 1); | |
4155 | else | |
4156 | i2c_set_sda(dev, 0); | |
4157 | i2c_set_scl(dev, 1); | |
4158 | } | |
4159 | } | |
4160 | ||
9ef4dea6 | 4161 | /* we can't really read the lines, so fake it */ |
71b5f4f1 | 4162 | static int i2c_read_ack(struct comedi_device * dev) |
88b12a9a FMH |
4163 | { |
4164 | i2c_set_scl(dev, 0); | |
4165 | i2c_set_sda(dev, 1); | |
4166 | i2c_set_scl(dev, 1); | |
4167 | ||
9ef4dea6 | 4168 | return 0; /* return fake acknowledge bit */ |
88b12a9a FMH |
4169 | } |
4170 | ||
9ef4dea6 | 4171 | /* send start bit */ |
71b5f4f1 | 4172 | static void i2c_start(struct comedi_device * dev) |
88b12a9a FMH |
4173 | { |
4174 | i2c_set_scl(dev, 1); | |
4175 | i2c_set_sda(dev, 1); | |
4176 | i2c_set_sda(dev, 0); | |
4177 | } | |
4178 | ||
9ef4dea6 | 4179 | /* send stop bit */ |
71b5f4f1 | 4180 | static void i2c_stop(struct comedi_device * dev) |
88b12a9a FMH |
4181 | { |
4182 | i2c_set_scl(dev, 0); | |
4183 | i2c_set_sda(dev, 0); | |
4184 | i2c_set_scl(dev, 1); | |
4185 | i2c_set_sda(dev, 1); | |
4186 | } | |
4187 | ||
71b5f4f1 | 4188 | static void i2c_write(struct comedi_device * dev, unsigned int address, |
88b12a9a FMH |
4189 | const uint8_t * data, unsigned int length) |
4190 | { | |
4191 | unsigned int i; | |
4192 | uint8_t bitstream; | |
4193 | static const int read_bit = 0x1; | |
4194 | ||
9ef4dea6 | 4195 | /* XXX need mutex to prevent simultaneous attempts to access eeprom and i2c bus */ |
88b12a9a | 4196 | |
9ef4dea6 | 4197 | /* make sure we dont send anything to eeprom */ |
88b12a9a FMH |
4198 | priv(dev)->plx_control_bits &= ~CTL_EE_CS; |
4199 | ||
4200 | i2c_stop(dev); | |
4201 | i2c_start(dev); | |
4202 | ||
9ef4dea6 | 4203 | /* send address and write bit */ |
88b12a9a FMH |
4204 | bitstream = (address << 1) & ~read_bit; |
4205 | i2c_write_byte(dev, bitstream); | |
4206 | ||
9ef4dea6 | 4207 | /* get acknowledge */ |
88b12a9a FMH |
4208 | if (i2c_read_ack(dev) != 0) { |
4209 | comedi_error(dev, "i2c write failed: no acknowledge"); | |
4210 | i2c_stop(dev); | |
4211 | return; | |
4212 | } | |
9ef4dea6 | 4213 | /* write data bytes */ |
88b12a9a FMH |
4214 | for (i = 0; i < length; i++) { |
4215 | i2c_write_byte(dev, data[i]); | |
4216 | if (i2c_read_ack(dev) != 0) { | |
4217 | comedi_error(dev, "i2c write failed: no acknowledge"); | |
4218 | i2c_stop(dev); | |
4219 | return; | |
4220 | } | |
4221 | } | |
4222 | i2c_stop(dev); | |
4223 | } |