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1 | /* | |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2020 Florian Schmidt <schmidt_florian@gmx.de> | |
5 | * Copyright (C) 2013 Marcus Comstedt <marcus@mc.pp.se> | |
6 | * Copyright (C) 2013 Bert Vermeulen <bert@biot.com> | |
7 | * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk> | |
8 | * | |
9 | * This program is free software: you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation, either version 3 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
21 | */ | |
22 | ||
23 | #include <config.h> | |
24 | #include <stdint.h> | |
25 | #include <string.h> | |
26 | #include <glib.h> | |
27 | #include <glib/gstdio.h> | |
28 | #include <stdio.h> | |
29 | #include <errno.h> | |
30 | #include <math.h> | |
31 | #include <inttypes.h> | |
32 | #include <libsigrok/libsigrok.h> | |
33 | #include "libsigrok-internal.h" | |
34 | #include "protocol.h" | |
35 | ||
36 | #define FPGA_FIRMWARE "kingst-la2016a-fpga.bitstream" | |
37 | #define UC_FIRMWARE "kingst-la-%04x.fw" | |
38 | ||
39 | #define MAX_SAMPLE_RATE SR_MHZ(200) | |
40 | #define MAX_SAMPLE_DEPTH 10e9 | |
41 | #define MAX_PWM_FREQ SR_MHZ(20) | |
42 | #define PWM_CLOCK SR_MHZ(200) | |
43 | ||
44 | /* registers for control request 32: */ | |
45 | #define CTRL_RUN 0x00 | |
46 | #define CTRL_PWM_EN 0x02 | |
47 | #define CTRL_BULK 0x10 /* can be read to get 12 byte sampling_info (III) */ | |
48 | #define CTRL_SAMPLING 0x20 | |
49 | #define CTRL_TRIGGER 0x30 | |
50 | #define CTRL_THRESHOLD 0x48 | |
51 | #define CTRL_PWM1 0x70 | |
52 | #define CTRL_PWM2 0x78 | |
53 | ||
54 | static int ctrl_in(const struct sr_dev_inst *sdi, | |
55 | uint8_t bRequest, uint16_t wValue, uint16_t wIndex, | |
56 | void *data, uint16_t wLength) | |
57 | { | |
58 | struct sr_usb_dev_inst *usb; | |
59 | int ret; | |
60 | ||
61 | usb = sdi->conn; | |
62 | ||
63 | if ((ret = libusb_control_transfer( | |
64 | usb->devhdl, LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_ENDPOINT_IN, | |
65 | bRequest, wValue, wIndex, (unsigned char *)data, wLength, | |
66 | DEFAULT_TIMEOUT_MS)) != wLength) { | |
67 | sr_err("failed to read %d bytes via ctrl-in %d %#x, %d: %s.", | |
68 | wLength, bRequest, wValue, wIndex, | |
69 | libusb_error_name(ret)); | |
70 | return SR_ERR; | |
71 | } | |
72 | ||
73 | return SR_OK; | |
74 | } | |
75 | ||
76 | static int ctrl_out(const struct sr_dev_inst *sdi, | |
77 | uint8_t bRequest, uint16_t wValue, uint16_t wIndex, | |
78 | void *data, uint16_t wLength) | |
79 | { | |
80 | struct sr_usb_dev_inst *usb; | |
81 | int ret; | |
82 | ||
83 | usb = sdi->conn; | |
84 | ||
85 | if ((ret = libusb_control_transfer( | |
86 | usb->devhdl, LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_ENDPOINT_OUT, | |
87 | bRequest, wValue, wIndex, (unsigned char*)data, wLength, | |
88 | DEFAULT_TIMEOUT_MS)) != wLength) { | |
89 | sr_err("failed to write %d bytes via ctrl-out %d %#x, %d: %s.", | |
90 | wLength, bRequest, wValue, wIndex, | |
91 | libusb_error_name(ret)); | |
92 | return SR_ERR; | |
93 | } | |
94 | ||
95 | return SR_OK; | |
96 | } | |
97 | ||
98 | static int upload_fpga_bitstream(const struct sr_dev_inst *sdi) | |
99 | { | |
100 | struct dev_context *devc; | |
101 | struct drv_context *drvc; | |
102 | struct sr_usb_dev_inst *usb; | |
103 | struct sr_resource bitstream; | |
104 | uint32_t cmd; | |
105 | uint8_t cmd_resp; | |
106 | uint8_t block[4096]; | |
107 | int len, act_len; | |
108 | unsigned int pos; | |
109 | int ret; | |
110 | unsigned int zero_pad_to = 0x2c000; | |
111 | ||
112 | devc = sdi->priv; | |
113 | drvc = sdi->driver->context; | |
114 | usb = sdi->conn; | |
115 | ||
116 | sr_info("Uploading FPGA bitstream '%s'.", FPGA_FIRMWARE); | |
117 | ||
118 | ret = sr_resource_open(drvc->sr_ctx, &bitstream, SR_RESOURCE_FIRMWARE, FPGA_FIRMWARE); | |
119 | if (ret != SR_OK) { | |
120 | sr_err("could not find la2016 firmware %s!", FPGA_FIRMWARE); | |
121 | return ret; | |
122 | } | |
123 | ||
124 | devc->bitstream_size = (uint32_t)bitstream.size; | |
125 | WL32(&cmd, devc->bitstream_size); | |
126 | if ((ret = ctrl_out(sdi, 80, 0x00, 0, &cmd, sizeof(cmd))) != SR_OK) { | |
127 | sr_err("failed to give upload init command"); | |
128 | sr_resource_close(drvc->sr_ctx, &bitstream); | |
129 | return ret; | |
130 | } | |
131 | ||
132 | pos = 0; | |
133 | while (1) { | |
134 | if (pos < bitstream.size) { | |
135 | len = (int)sr_resource_read(drvc->sr_ctx, &bitstream, &block, sizeof(block)); | |
136 | if (len < 0) { | |
137 | sr_err("failed to read from fpga bitstream!"); | |
138 | sr_resource_close(drvc->sr_ctx, &bitstream); | |
139 | return SR_ERR; | |
140 | } | |
141 | } else { | |
142 | // fill with zero's until zero_pad_to | |
143 | len = zero_pad_to - pos; | |
144 | if ((unsigned)len > sizeof(block)) | |
145 | len = sizeof(block); | |
146 | memset(&block, 0, len); | |
147 | } | |
148 | if (len == 0) | |
149 | break; | |
150 | ||
151 | ret = libusb_bulk_transfer(usb->devhdl, 2, (unsigned char*)&block[0], len, &act_len, DEFAULT_TIMEOUT_MS); | |
152 | if (ret != 0) { | |
153 | sr_dbg("failed to write fpga bitstream block at %#x len %d: %s.", pos, (int)len, libusb_error_name(ret)); | |
154 | ret = SR_ERR; | |
155 | break; | |
156 | } | |
157 | if (act_len != len) { | |
158 | sr_dbg("failed to write fpga bitstream block at %#x len %d: act_len is %d.", pos, (int)len, act_len); | |
159 | ret = SR_ERR; | |
160 | break; | |
161 | } | |
162 | pos += len; | |
163 | } | |
164 | sr_resource_close(drvc->sr_ctx, &bitstream); | |
165 | if (ret != 0) | |
166 | return ret; | |
167 | sr_info("FPGA bitstream upload (%" PRIu64 " bytes) done.", bitstream.size); | |
168 | ||
169 | if ((ret = ctrl_in(sdi, 80, 0x00, 0, &cmd_resp, sizeof(cmd_resp))) != SR_OK) { | |
170 | sr_err("failed to read response after FPGA bitstream upload"); | |
171 | return ret; | |
172 | } | |
173 | if (cmd_resp != 0) { | |
174 | sr_err("after fpga bitstream upload command response is 0x%02x, expect 0!", cmd_resp); | |
175 | return SR_ERR; | |
176 | } | |
177 | ||
178 | g_usleep(30000); | |
179 | ||
180 | if ((ret = ctrl_out(sdi, 16, 0x01, 0, NULL, 0)) != SR_OK) { | |
181 | sr_err("failed enable fpga"); | |
182 | return ret; | |
183 | } | |
184 | ||
185 | g_usleep(40000); | |
186 | return SR_OK; | |
187 | } | |
188 | ||
189 | static int set_threshold_voltage(const struct sr_dev_inst *sdi, float voltage) | |
190 | { | |
191 | struct dev_context *devc; | |
192 | float o1, o2, v1, v2, f; | |
193 | uint32_t cfg; | |
194 | int ret; | |
195 | ||
196 | devc = sdi->priv; | |
197 | o1 = 15859969; v1 = 0.45; | |
198 | o2 = 15860333; v2 = 1.65; | |
199 | f = (o2 - o1) / (v2 - v1); | |
200 | WL32(&cfg, (uint32_t)(o1 + (voltage - v1) * f)); | |
201 | ||
202 | sr_dbg("set threshold voltage %.2fV", voltage); | |
203 | ret = ctrl_out(sdi, 32, CTRL_THRESHOLD, 0, &cfg, sizeof(cfg)); | |
204 | if (ret != SR_OK) { | |
205 | sr_err("error setting new threshold voltage of %.2fV (%d)", voltage, RL16(&cfg)); | |
206 | return ret; | |
207 | } | |
208 | devc->threshold_voltage = voltage; | |
209 | ||
210 | return SR_OK; | |
211 | } | |
212 | ||
213 | static int enable_pwm(const struct sr_dev_inst *sdi, uint8_t p1, uint8_t p2) | |
214 | { | |
215 | struct dev_context *devc; | |
216 | uint8_t cfg; | |
217 | int ret; | |
218 | ||
219 | devc = sdi->priv; | |
220 | cfg = 0; | |
221 | ||
222 | if (p1) cfg |= 1 << 0; | |
223 | if (p2) cfg |= 1 << 1; | |
224 | ||
225 | sr_dbg("set pwm enable %d %d", p1, p2); | |
226 | ret = ctrl_out(sdi, 32, CTRL_PWM_EN, 0, &cfg, sizeof(cfg)); | |
227 | if (ret != SR_OK) { | |
228 | sr_err("error setting new pwm enable 0x%02x", cfg); | |
229 | return ret; | |
230 | } | |
231 | devc->pwm_setting[0].enabled = (p1) ? 1 : 0; | |
232 | devc->pwm_setting[1].enabled = (p2) ? 1 : 0; | |
233 | ||
234 | return SR_OK; | |
235 | } | |
236 | ||
237 | static int set_pwm(const struct sr_dev_inst *sdi, uint8_t which, float freq, float duty) | |
238 | { | |
239 | int CTRL_PWM[] = { CTRL_PWM1, CTRL_PWM2 }; | |
240 | struct dev_context *devc; | |
241 | pwm_setting_dev_t cfg; | |
242 | pwm_setting_t *setting; | |
243 | int ret; | |
244 | ||
245 | devc = sdi->priv; | |
246 | ||
247 | if (which < 1 || which > 2) { | |
248 | sr_err("invalid pwm channel: %d", which); | |
249 | return SR_ERR; | |
250 | } | |
251 | if (freq > MAX_PWM_FREQ) { | |
252 | sr_err("pwm frequency too high: %.1f", freq); | |
253 | return SR_ERR; | |
254 | } | |
255 | if (duty > 100 || duty < 0) { | |
256 | sr_err("invalid pwm percentage: %f", duty); | |
257 | return SR_ERR; | |
258 | } | |
259 | ||
260 | cfg.period = (uint32_t)(PWM_CLOCK / freq); | |
261 | cfg.duty = (uint32_t)(0.5f + (cfg.period * duty / 100.)); | |
262 | sr_dbg("set pwm%d period %d, duty %d", which, cfg.period, cfg.duty); | |
263 | ||
264 | pwm_setting_dev_le(cfg); | |
265 | ret = ctrl_out(sdi, 32, CTRL_PWM[which - 1], 0, &cfg, sizeof(cfg)); | |
266 | if (ret != SR_OK) { | |
267 | sr_err("error setting new pwm%d config %d %d", which, cfg.period, cfg.duty); | |
268 | return ret; | |
269 | } | |
270 | setting = &devc->pwm_setting[which - 1]; | |
271 | setting->freq = freq; | |
272 | setting->duty = duty; | |
273 | setting->dev = cfg; | |
274 | ||
275 | return SR_OK; | |
276 | } | |
277 | ||
278 | static int set_defaults(const struct sr_dev_inst *sdi) | |
279 | { | |
280 | struct dev_context *devc; | |
281 | int ret; | |
282 | ||
283 | devc = sdi->priv; | |
284 | ||
285 | devc->capture_ratio = 5; /* percent */ | |
286 | devc->cur_channels = 0xffff; | |
287 | devc->limit_samples = 5000000; | |
288 | devc->cur_samplerate = 200000000; | |
289 | ||
290 | ret = set_threshold_voltage(sdi, devc->threshold_voltage); | |
291 | if (ret) | |
292 | return ret; | |
293 | ||
294 | ret = enable_pwm(sdi, 0, 0); | |
295 | if (ret) | |
296 | return ret; | |
297 | ||
298 | ret = set_pwm(sdi, 1, 1e3, 50); | |
299 | if (ret) | |
300 | return ret; | |
301 | ||
302 | ret = set_pwm(sdi, 2, 100e3, 50); | |
303 | if (ret) | |
304 | return ret; | |
305 | ||
306 | ret = enable_pwm(sdi, 1, 1); | |
307 | if (ret) | |
308 | return ret; | |
309 | ||
310 | return SR_OK; | |
311 | } | |
312 | ||
313 | static int set_trigger_config(const struct sr_dev_inst *sdi) | |
314 | { | |
315 | struct dev_context *devc; | |
316 | struct sr_trigger *trigger; | |
317 | trigger_cfg_t cfg; | |
318 | GSList *stages; | |
319 | GSList *channel; | |
320 | struct sr_trigger_stage *stage1; | |
321 | struct sr_trigger_match *match; | |
322 | uint16_t ch_mask; | |
323 | int ret; | |
324 | ||
325 | devc = sdi->priv; | |
326 | trigger = sr_session_trigger_get(sdi->session); | |
327 | ||
328 | memset(&cfg, 0, sizeof(cfg)); | |
329 | ||
330 | cfg.channels = devc->cur_channels; | |
331 | ||
332 | if (trigger && trigger->stages) { | |
333 | stages = trigger->stages; | |
334 | stage1 = stages->data; | |
335 | if (stages->next) { | |
336 | sr_err("Only one trigger stage supported for now."); | |
337 | return SR_ERR; | |
338 | } | |
339 | channel = stage1->matches; | |
340 | while (channel) { | |
341 | match = channel->data; | |
342 | ch_mask = 1 << match->channel->index; | |
343 | ||
344 | switch (match->match) { | |
345 | case SR_TRIGGER_ZERO: | |
346 | cfg.level |= ch_mask; | |
347 | cfg.high_or_falling &= ~ch_mask; | |
348 | break; | |
349 | case SR_TRIGGER_ONE: | |
350 | cfg.level |= ch_mask; | |
351 | cfg.high_or_falling |= ch_mask; | |
352 | break; | |
353 | case SR_TRIGGER_RISING: | |
354 | if ((cfg.enabled & ~cfg.level)) { | |
355 | sr_err("Only one trigger signal with falling-/rising-edge allowed."); | |
356 | return SR_ERR; | |
357 | } | |
358 | cfg.level &= ~ch_mask; | |
359 | cfg.high_or_falling &= ~ch_mask; | |
360 | break; | |
361 | case SR_TRIGGER_FALLING: | |
362 | if ((cfg.enabled & ~cfg.level)) { | |
363 | sr_err("Only one trigger signal with falling-/rising-edge allowed."); | |
364 | return SR_ERR; | |
365 | } | |
366 | cfg.level &= ~ch_mask; | |
367 | cfg.high_or_falling |= ch_mask; | |
368 | break; | |
369 | default: | |
370 | sr_err("Unknown trigger value."); | |
371 | return SR_ERR; | |
372 | } | |
373 | cfg.enabled |= ch_mask; | |
374 | channel = channel->next; | |
375 | } | |
376 | } | |
377 | sr_dbg("set trigger configuration channels: 0x%04x, " | |
378 | "trigger-enabled 0x%04x, level-triggered 0x%04x, " | |
379 | "high/falling 0x%04x", cfg.channels, cfg.enabled, cfg.level, | |
380 | cfg.high_or_falling); | |
381 | ||
382 | devc->had_triggers_configured = cfg.enabled != 0; | |
383 | ||
384 | trigger_cfg_le(cfg); | |
385 | ret = ctrl_out(sdi, 32, CTRL_TRIGGER, 16, &cfg, sizeof(cfg)); | |
386 | if (ret != SR_OK) { | |
387 | sr_err("error setting trigger config!"); | |
388 | return ret; | |
389 | } | |
390 | ||
391 | return SR_OK; | |
392 | } | |
393 | ||
394 | static int set_sample_config(const struct sr_dev_inst *sdi) | |
395 | { | |
396 | struct dev_context *devc; | |
397 | sample_config_t cfg; | |
398 | double clock_divisor; | |
399 | uint64_t psa; | |
400 | uint64_t total; | |
401 | int ret; | |
402 | ||
403 | devc = sdi->priv; | |
404 | total = 128 * 1024 * 1024; | |
405 | ||
406 | if (devc->cur_samplerate > MAX_SAMPLE_RATE) { | |
407 | sr_err("too high sample rate: %" PRIu64, devc->cur_samplerate); | |
408 | return SR_ERR; | |
409 | } | |
410 | ||
411 | clock_divisor = MAX_SAMPLE_RATE / (double)devc->cur_samplerate; | |
412 | if (clock_divisor > 0xffff) | |
413 | clock_divisor = 0xffff; | |
414 | cfg.clock_divisor = (uint16_t)(clock_divisor + 0.5); | |
415 | devc->cur_samplerate = MAX_SAMPLE_RATE / cfg.clock_divisor; | |
416 | ||
417 | if (devc->limit_samples > MAX_SAMPLE_DEPTH) { | |
418 | sr_err("too high sample depth: %" PRIu64, devc->limit_samples); | |
419 | return SR_ERR; | |
420 | } | |
421 | cfg.sample_depth = devc->limit_samples; | |
422 | ||
423 | devc->pre_trigger_size = (devc->capture_ratio * devc->limit_samples) / 100; | |
424 | ||
425 | psa = devc->pre_trigger_size * 256; | |
426 | cfg.psa = (uint32_t)(psa & 0xffffffff); | |
427 | cfg.u1 = (uint16_t)((psa >> 32) & 0xffff); | |
428 | cfg.u2 = (uint32_t)((total * devc->capture_ratio) / 100); | |
429 | ||
430 | sr_dbg("set sampling configuration %.0fkHz, %d samples, trigger-pos %d%%", | |
431 | devc->cur_samplerate/1e3, (unsigned int)cfg.sample_depth, (unsigned int)devc->capture_ratio); | |
432 | ||
433 | sample_config_le(cfg); | |
434 | ret = ctrl_out(sdi, 32, CTRL_SAMPLING, 0, &cfg, sizeof(cfg)); | |
435 | if (ret != SR_OK) { | |
436 | sr_err("error setting sample config!"); | |
437 | return ret; | |
438 | } | |
439 | ||
440 | return SR_OK; | |
441 | } | |
442 | ||
443 | /** | |
444 | * lowest 2 bit are probably: | |
445 | * 2: recording | |
446 | * 1: finished | |
447 | * next 2 bit indicate whether we are still waiting for triggering | |
448 | * 0: waiting | |
449 | * 3: triggered | |
450 | */ | |
451 | static uint16_t run_state(const struct sr_dev_inst *sdi) | |
452 | { | |
453 | uint16_t state; | |
454 | int ret; | |
455 | ||
456 | if ((ret = ctrl_in(sdi, 32, CTRL_RUN, 0, &state, sizeof(state))) != SR_OK) { | |
457 | sr_err("failed to read run state!"); | |
458 | return ret; | |
459 | } | |
460 | sr_dbg("run_state: 0x%04x", state); | |
461 | ||
462 | return state; | |
463 | } | |
464 | ||
465 | static int set_run_mode(const struct sr_dev_inst *sdi, uint8_t fast_blinking) | |
466 | { | |
467 | int ret; | |
468 | ||
469 | if ((ret = ctrl_out(sdi, 32, CTRL_RUN, 0, &fast_blinking, sizeof(fast_blinking))) != SR_OK) { | |
470 | sr_err("failed to send set-run-mode command %d", fast_blinking); | |
471 | return ret; | |
472 | } | |
473 | ||
474 | return SR_OK; | |
475 | } | |
476 | ||
477 | static int get_capture_info(const struct sr_dev_inst *sdi) | |
478 | { | |
479 | struct dev_context *devc; | |
480 | int ret; | |
481 | ||
482 | devc = sdi->priv; | |
483 | ||
484 | if ((ret = ctrl_in(sdi, 32, CTRL_BULK, 0, &devc->info, sizeof(devc->info))) != SR_OK) { | |
485 | sr_err("failed to read capture info!"); | |
486 | return ret; | |
487 | } | |
488 | capture_info_host(devc->info); | |
489 | ||
490 | sr_dbg("capture info: n_rep_packets: 0x%08x/%d, before_trigger: 0x%08x/%d, write_pos: 0x%08x%d", | |
491 | devc->info.n_rep_packets, devc->info.n_rep_packets, | |
492 | devc->info.n_rep_packets_before_trigger, devc->info.n_rep_packets_before_trigger, | |
493 | devc->info.write_pos, devc->info.write_pos); | |
494 | ||
495 | if (devc->info.n_rep_packets % 5) | |
496 | sr_warn("number of packets is not as expected multiples of 5: %d", devc->info.n_rep_packets); | |
497 | ||
498 | return SR_OK; | |
499 | } | |
500 | ||
501 | SR_PRIV int la2016_upload_firmware(struct sr_context *sr_ctx, libusb_device *dev, uint16_t product_id) | |
502 | { | |
503 | char fw_file[1024]; | |
504 | snprintf(fw_file, sizeof(fw_file) - 1, UC_FIRMWARE, product_id); | |
505 | return ezusb_upload_firmware(sr_ctx, dev, 0, fw_file); | |
506 | } | |
507 | ||
508 | SR_PRIV int la2016_setup_acquisition(const struct sr_dev_inst *sdi) | |
509 | { | |
510 | struct dev_context *devc; | |
511 | int ret; | |
512 | uint8_t cmd; | |
513 | ||
514 | devc = sdi->priv; | |
515 | ||
516 | ret = set_threshold_voltage(sdi, devc->threshold_voltage); | |
517 | if (ret != SR_OK) | |
518 | return ret; | |
519 | ||
520 | cmd = 0; | |
521 | if ((ret = ctrl_out(sdi, 32, 0x03, 0, &cmd, sizeof(cmd))) != SR_OK) { | |
522 | sr_err("failed to send stop sampling command"); | |
523 | return ret; | |
524 | } | |
525 | ||
526 | ret = set_trigger_config(sdi); | |
527 | if (ret != SR_OK) | |
528 | return ret; | |
529 | ||
530 | ret = set_sample_config(sdi); | |
531 | if (ret != SR_OK) | |
532 | return ret; | |
533 | ||
534 | return SR_OK; | |
535 | } | |
536 | ||
537 | SR_PRIV int la2016_start_acquisition(const struct sr_dev_inst *sdi) | |
538 | { | |
539 | return set_run_mode(sdi, 3); | |
540 | } | |
541 | ||
542 | SR_PRIV int la2016_stop_acquisition(const struct sr_dev_inst *sdi) | |
543 | { | |
544 | return set_run_mode(sdi, 0); | |
545 | } | |
546 | ||
547 | SR_PRIV int la2016_abort_acquisition(const struct sr_dev_inst *sdi) | |
548 | { | |
549 | return la2016_stop_acquisition(sdi); | |
550 | } | |
551 | ||
552 | SR_PRIV int la2016_has_triggered(const struct sr_dev_inst *sdi) | |
553 | { | |
554 | uint16_t state; | |
555 | ||
556 | state = run_state(sdi); | |
557 | ||
558 | return (state & 0x3) == 1; | |
559 | } | |
560 | ||
561 | SR_PRIV int la2016_start_retrieval(const struct sr_dev_inst *sdi, libusb_transfer_cb_fn cb) | |
562 | { | |
563 | struct dev_context *devc; | |
564 | struct sr_usb_dev_inst *usb; | |
565 | int ret; | |
566 | uint32_t bulk_cfg[2]; | |
567 | uint32_t to_read; | |
568 | uint8_t *buffer; | |
569 | ||
570 | devc = sdi->priv; | |
571 | usb = sdi->conn; | |
572 | ||
573 | if ((ret = get_capture_info(sdi)) != SR_OK) | |
574 | return ret; | |
575 | ||
576 | devc->n_transfer_packets_to_read = devc->info.n_rep_packets / 5; | |
577 | devc->n_bytes_to_read = devc->n_transfer_packets_to_read * sizeof(transfer_packet_t); | |
578 | devc->read_pos = devc->info.write_pos - devc->n_bytes_to_read; | |
579 | devc->n_reps_until_trigger = devc->info.n_rep_packets_before_trigger; | |
580 | ||
581 | sr_dbg("want to read %d tfer-packets starting from pos %d", | |
582 | devc->n_transfer_packets_to_read, devc->read_pos); | |
583 | ||
584 | if ((ret = ctrl_out(sdi, 56, 0x00, 0, NULL, 0)) != SR_OK) { | |
585 | sr_err("failed to reset bulk state"); | |
586 | return ret; | |
587 | } | |
588 | WL32(&bulk_cfg[0], devc->read_pos); | |
589 | WL32(&bulk_cfg[1], devc->n_bytes_to_read); | |
590 | sr_dbg("will read from 0x%08x, 0x%08x bytes", devc->read_pos, devc->n_bytes_to_read); | |
591 | if ((ret = ctrl_out(sdi, 32, CTRL_BULK, 0, &bulk_cfg, sizeof(bulk_cfg))) != SR_OK) { | |
592 | sr_err("failed to send bulk config"); | |
593 | return ret; | |
594 | } | |
595 | if ((ret = ctrl_out(sdi, 48, 0x00, 0, NULL, 0)) != SR_OK) { | |
596 | sr_err("failed to unblock bulk transfers"); | |
597 | return ret; | |
598 | } | |
599 | ||
600 | to_read = devc->n_bytes_to_read; | |
601 | if (to_read > LA2016_BULK_MAX) | |
602 | to_read = LA2016_BULK_MAX; | |
603 | ||
604 | buffer = g_try_malloc(to_read); | |
605 | if (!buffer) { | |
606 | sr_err("Failed to allocate %d bytes for bulk transfer", to_read); | |
607 | return SR_ERR_MALLOC; | |
608 | } | |
609 | ||
610 | devc->transfer = libusb_alloc_transfer(0); | |
611 | libusb_fill_bulk_transfer( | |
612 | devc->transfer, usb->devhdl, | |
613 | 0x86, buffer, to_read, | |
614 | cb, (void *)sdi, DEFAULT_TIMEOUT_MS); | |
615 | ||
616 | if ((ret = libusb_submit_transfer(devc->transfer)) != 0) { | |
617 | sr_err("Failed to submit transfer: %s.", libusb_error_name(ret)); | |
618 | libusb_free_transfer(devc->transfer); | |
619 | devc->transfer = NULL; | |
620 | g_free(buffer); | |
621 | return SR_ERR; | |
622 | } | |
623 | ||
624 | return SR_OK; | |
625 | } | |
626 | ||
627 | SR_PRIV int la2016_init_device(const struct sr_dev_inst *sdi) | |
628 | { | |
629 | struct dev_context *devc; | |
630 | int ret; | |
631 | uint32_t i1; | |
632 | uint32_t i2[2]; | |
633 | uint16_t state; | |
634 | ||
635 | /* this unknown_cmd1 seems to depend on the FPGA bitstream */ | |
636 | uint8_t unknown_cmd1_340[] = { 0xa3, 0x09, 0xc9, 0x8d, 0xe7, 0xad, 0x7a, 0x62, 0xb6, 0xd1, 0xbf }; | |
637 | uint8_t unknown_cmd1_342[] = { 0xa3, 0x09, 0xc9, 0xf4, 0x32, 0x4c, 0x4d, 0xee, 0xab, 0xa0, 0xdd }; | |
638 | uint8_t expected_unknown_resp1_340[] = { 0xa3, 0x10, 0xda, 0x66, 0x6b, 0x93, 0x5c, 0x55, 0x38, 0x50, 0x39, 0x51, 0x98, 0x86, 0x5d, 0x06, 0x7c, 0xea }; | |
639 | uint8_t expected_unknown_resp1_342[] = { 0xa3, 0x10, 0xb3, 0x92, 0x7b, 0xd8, 0x6b, 0xca, 0xa5, 0xab, 0x42, 0x6e, 0xda, 0xcd, 0x9d, 0xf1, 0x31, 0x2f }; | |
640 | uint8_t unknown_resp1[sizeof(expected_unknown_resp1_340)]; | |
641 | uint8_t *expected_unknown_resp1; | |
642 | uint8_t *unknown_cmd1; | |
643 | ||
644 | uint8_t unknown_cmd2[] = { 0xa3, 0x01, 0xca }; | |
645 | uint8_t expected_unknown_resp2[] = { 0xa3, 0x08, 0x06, 0x83, 0x96, 0x29, 0x15, 0xe1, 0x92, 0x74, 0x00, 0x00 }; | |
646 | uint8_t unknown_resp2[sizeof(expected_unknown_resp2)]; | |
647 | ||
648 | devc = sdi->priv; | |
649 | ||
650 | if ((ret = ctrl_in(sdi, 162, 0x20, 0, &i1, sizeof(i1))) != SR_OK) { | |
651 | sr_err("failed to read i1"); | |
652 | return ret; | |
653 | } | |
654 | sr_dbg("i1: 0x%08x", i1); | |
655 | ||
656 | if ((ret = ctrl_in(sdi, 162, 0x08, 0, &i2, sizeof(i2))) != SR_OK) { | |
657 | sr_err("failed to read i2"); | |
658 | return ret; | |
659 | } | |
660 | sr_dbg("i2: 0x%08x, 0x%08x", i2[0], i2[1]); | |
661 | ||
662 | if ((ret = upload_fpga_bitstream(sdi)) != SR_OK) { | |
663 | sr_err("failed to upload fpga bitstream"); | |
664 | return ret; | |
665 | } | |
666 | ||
667 | if (run_state(sdi) == 0xffff) { | |
668 | sr_err("run_state after fpga bitstream upload is 0xffff!"); | |
669 | return SR_ERR; | |
670 | } | |
671 | ||
672 | if (devc->bitstream_size == 0x2b602) { | |
673 | // v3.4.0 | |
674 | unknown_cmd1 = unknown_cmd1_340; | |
675 | expected_unknown_resp1 = expected_unknown_resp1_340; | |
676 | } else { | |
677 | // v3.4.2 | |
678 | if (devc->bitstream_size != 0x2b839) | |
679 | sr_warn("the FPGA bitstream size %d is unknown. tested bistreams from vendor's version 3.4.0 and 3.4.2\n", devc->bitstream_size); | |
680 | unknown_cmd1 = unknown_cmd1_342; | |
681 | expected_unknown_resp1 = expected_unknown_resp1_342; | |
682 | } | |
683 | if ((ret = ctrl_out(sdi, 96, 0x00, 0, unknown_cmd1, sizeof(unknown_cmd1_340))) != SR_OK) { | |
684 | sr_err("failed to send unknown_cmd1"); | |
685 | return ret; | |
686 | } | |
687 | g_usleep(80 * 1000); | |
688 | if ((ret = ctrl_in(sdi, 96, 0x00, 0, unknown_resp1, sizeof(unknown_resp1))) != SR_OK) { | |
689 | sr_err("failed to read unknown_resp1"); | |
690 | return ret; | |
691 | } | |
692 | if (memcmp(unknown_resp1, expected_unknown_resp1, sizeof(unknown_resp1))) | |
693 | sr_dbg("unknown_cmd1 response is not as expected, this is to be expected..."); | |
694 | ||
695 | state = run_state(sdi); | |
696 | if (state != 0x85e9) | |
697 | sr_warn("expect run state to be 0x85e9, but it reads 0x%04x", state); | |
698 | ||
699 | if ((ret = ctrl_out(sdi, 96, 0x00, 0, unknown_cmd2, sizeof(unknown_cmd2))) != SR_OK) { | |
700 | sr_err("failed to send unknown_cmd2"); | |
701 | return ret; | |
702 | } | |
703 | g_usleep(80 * 1000); | |
704 | if ((ret = ctrl_in(sdi, 96, 0x00, 0, unknown_resp2, sizeof(unknown_resp2))) != SR_OK) { | |
705 | sr_err("failed to read unknown_resp2"); | |
706 | return ret; | |
707 | } | |
708 | if (memcmp(unknown_resp2, expected_unknown_resp2, sizeof(unknown_resp2))) | |
709 | sr_dbg("unknown_cmd2 response is not as expected!"); | |
710 | ||
711 | if ((ret = ctrl_out(sdi, 56, 0x00, 0, NULL, 0)) != SR_OK) { | |
712 | sr_err("failed to send unknown_cmd3"); | |
713 | return ret; | |
714 | } | |
715 | sr_dbg("device should be initialized"); | |
716 | ||
717 | return set_defaults(sdi); | |
718 | } | |
719 | ||
720 | SR_PRIV int la2016_deinit_device(const struct sr_dev_inst *sdi) | |
721 | { | |
722 | int ret; | |
723 | ||
724 | if ((ret = ctrl_out(sdi, 16, 0x00, 0, NULL, 0)) != SR_OK) { | |
725 | sr_err("failed to send deinit command"); | |
726 | return ret; | |
727 | } | |
728 | ||
729 | return SR_OK; | |
730 | } |