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1 | /* | |
2 | * This file is part of the sigrok project. | |
3 | * | |
4 | * Copyright (C) 2010 Bert Vermeulen <bert@biot.com> | |
5 | * | |
6 | * This program is free software: you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation, either version 3 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | ||
20 | #include <stdio.h> | |
21 | #include <stdint.h> | |
22 | #include <stdlib.h> | |
23 | #include <sys/types.h> | |
24 | #include <sys/stat.h> | |
25 | #include <fcntl.h> | |
26 | #include <unistd.h> | |
27 | #ifdef _WIN32 | |
28 | #include <windows.h> | |
29 | #else | |
30 | #include <termios.h> | |
31 | #endif | |
32 | #include <string.h> | |
33 | #include <sys/time.h> | |
34 | #include <inttypes.h> | |
35 | #ifdef _WIN32 | |
36 | /* TODO */ | |
37 | #else | |
38 | #include <arpa/inet.h> | |
39 | #endif | |
40 | #include <glib.h> | |
41 | #include "sigrok.h" | |
42 | #include "sigrok-internal.h" | |
43 | #include "ols.h" | |
44 | ||
45 | #ifdef _WIN32 | |
46 | #define O_NONBLOCK FIONBIO | |
47 | #endif | |
48 | ||
49 | static int capabilities[] = { | |
50 | SR_HWCAP_LOGIC_ANALYZER, | |
51 | SR_HWCAP_SAMPLERATE, | |
52 | SR_HWCAP_CAPTURE_RATIO, | |
53 | SR_HWCAP_LIMIT_SAMPLES, | |
54 | SR_HWCAP_RLE, | |
55 | 0, | |
56 | }; | |
57 | ||
58 | static const char* probe_names[NUM_PROBES + 1] = { | |
59 | "0", | |
60 | "1", | |
61 | "2", | |
62 | "3", | |
63 | "4", | |
64 | "5", | |
65 | "6", | |
66 | "7", | |
67 | "8", | |
68 | "9", | |
69 | "10", | |
70 | "11", | |
71 | "12", | |
72 | "13", | |
73 | "14", | |
74 | "15", | |
75 | "16", | |
76 | "17", | |
77 | "18", | |
78 | "19", | |
79 | "20", | |
80 | "21", | |
81 | "22", | |
82 | "23", | |
83 | "24", | |
84 | "25", | |
85 | "26", | |
86 | "27", | |
87 | "28", | |
88 | "29", | |
89 | "30", | |
90 | "31", | |
91 | NULL, | |
92 | }; | |
93 | ||
94 | /* default supported samplerates, can be overridden by device metadata */ | |
95 | static struct sr_samplerates samplerates = { | |
96 | SR_HZ(10), | |
97 | SR_MHZ(200), | |
98 | SR_HZ(1), | |
99 | NULL, | |
100 | }; | |
101 | ||
102 | /* List of struct sr_serial_device_instance */ | |
103 | static GSList *device_instances = NULL; | |
104 | ||
105 | static int send_shortcommand(int fd, uint8_t command) | |
106 | { | |
107 | char buf[1]; | |
108 | ||
109 | sr_dbg("ols: sending cmd 0x%.2x", command); | |
110 | buf[0] = command; | |
111 | if (serial_write(fd, buf, 1) != 1) | |
112 | return SR_ERR; | |
113 | ||
114 | return SR_OK; | |
115 | } | |
116 | ||
117 | static int send_longcommand(int fd, uint8_t command, uint32_t data) | |
118 | { | |
119 | char buf[5]; | |
120 | ||
121 | sr_dbg("ols: sending cmd 0x%.2x data 0x%.8x", command, data); | |
122 | buf[0] = command; | |
123 | buf[1] = (data & 0xff000000) >> 24; | |
124 | buf[2] = (data & 0xff0000) >> 16; | |
125 | buf[3] = (data & 0xff00) >> 8; | |
126 | buf[4] = data & 0xff; | |
127 | if (serial_write(fd, buf, 5) != 5) | |
128 | return SR_ERR; | |
129 | ||
130 | return SR_OK; | |
131 | } | |
132 | ||
133 | static int configure_probes(struct ols_device *ols, GSList *probes) | |
134 | { | |
135 | struct sr_probe *probe; | |
136 | GSList *l; | |
137 | int probe_bit, stage, i; | |
138 | char *tc; | |
139 | ||
140 | ols->probe_mask = 0; | |
141 | for (i = 0; i < NUM_TRIGGER_STAGES; i++) { | |
142 | ols->trigger_mask[i] = 0; | |
143 | ols->trigger_value[i] = 0; | |
144 | } | |
145 | ||
146 | ols->num_stages = 0; | |
147 | for (l = probes; l; l = l->next) { | |
148 | probe = (struct sr_probe *)l->data; | |
149 | if (!probe->enabled) | |
150 | continue; | |
151 | ||
152 | /* | |
153 | * Set up the probe mask for later configuration into the | |
154 | * flag register. | |
155 | */ | |
156 | probe_bit = 1 << (probe->index - 1); | |
157 | ols->probe_mask |= probe_bit; | |
158 | ||
159 | if (!probe->trigger) | |
160 | continue; | |
161 | ||
162 | /* Configure trigger mask and value. */ | |
163 | stage = 0; | |
164 | for (tc = probe->trigger; tc && *tc; tc++) { | |
165 | ols->trigger_mask[stage] |= probe_bit; | |
166 | if (*tc == '1') | |
167 | ols->trigger_value[stage] |= probe_bit; | |
168 | stage++; | |
169 | if (stage > 3) | |
170 | /* | |
171 | * TODO: Only supporting parallel mode, with | |
172 | * up to 4 stages. | |
173 | */ | |
174 | return SR_ERR; | |
175 | } | |
176 | if (stage > ols->num_stages) | |
177 | ols->num_stages = stage; | |
178 | } | |
179 | ||
180 | return SR_OK; | |
181 | } | |
182 | ||
183 | static uint32_t reverse16(uint32_t in) | |
184 | { | |
185 | uint32_t out; | |
186 | ||
187 | out = (in & 0xff) << 8; | |
188 | out |= (in & 0xff00) >> 8; | |
189 | out |= (in & 0xff0000) << 8; | |
190 | out |= (in & 0xff000000) >> 8; | |
191 | ||
192 | return out; | |
193 | } | |
194 | ||
195 | static uint32_t reverse32(uint32_t in) | |
196 | { | |
197 | uint32_t out; | |
198 | ||
199 | out = (in & 0xff) << 24; | |
200 | out |= (in & 0xff00) << 8; | |
201 | out |= (in & 0xff0000) >> 8; | |
202 | out |= (in & 0xff000000) >> 24; | |
203 | ||
204 | return out; | |
205 | } | |
206 | ||
207 | static struct ols_device *ols_device_new(void) | |
208 | { | |
209 | struct ols_device *ols; | |
210 | ||
211 | /* TODO: Is 'ols' ever g_free()'d? */ | |
212 | if (!(ols = g_try_malloc0(sizeof(struct ols_device)))) { | |
213 | sr_err("ols: %s: ols malloc failed", __func__); | |
214 | return NULL; | |
215 | } | |
216 | ||
217 | ols->trigger_at = -1; | |
218 | ols->probe_mask = 0xffffffff; | |
219 | ols->cur_samplerate = SR_KHZ(200); | |
220 | ols->period_ps = 5000000; | |
221 | ||
222 | return ols; | |
223 | } | |
224 | ||
225 | static struct sr_device_instance *get_metadata(int fd) | |
226 | { | |
227 | struct sr_device_instance *sdi; | |
228 | struct ols_device *ols; | |
229 | uint32_t tmp_int; | |
230 | uint8_t key, type, token; | |
231 | GString *tmp_str, *devicename, *version; | |
232 | gchar tmp_c; | |
233 | ||
234 | sdi = sr_device_instance_new(0, SR_ST_INACTIVE, NULL, NULL, NULL); | |
235 | ols = ols_device_new(); | |
236 | sdi->priv = ols; | |
237 | ||
238 | devicename = g_string_new(""); | |
239 | version = g_string_new(""); | |
240 | ||
241 | key = 0xff; | |
242 | while (key) { | |
243 | if (serial_read(fd, &key, 1) != 1 || key == 0x00) | |
244 | break; | |
245 | type = key >> 5; | |
246 | token = key & 0x1f; | |
247 | switch (type) { | |
248 | case 0: | |
249 | /* NULL-terminated string */ | |
250 | tmp_str = g_string_new(""); | |
251 | while (serial_read(fd, &tmp_c, 1) == 1 && tmp_c != '\0') | |
252 | g_string_append_c(tmp_str, tmp_c); | |
253 | sr_dbg("ols: got metadata key 0x%.2x value '%s'", | |
254 | key, tmp_str->str); | |
255 | switch (token) { | |
256 | case 0x01: | |
257 | /* Device name */ | |
258 | devicename = g_string_append(devicename, tmp_str->str); | |
259 | break; | |
260 | case 0x02: | |
261 | /* FPGA firmware version */ | |
262 | if (version->len) | |
263 | g_string_append(version, ", "); | |
264 | g_string_append(version, "FPGA version "); | |
265 | g_string_append(version, tmp_str->str); | |
266 | break; | |
267 | case 0x03: | |
268 | /* Ancillary version */ | |
269 | if (version->len) | |
270 | g_string_append(version, ", "); | |
271 | g_string_append(version, "Ancillary version "); | |
272 | g_string_append(version, tmp_str->str); | |
273 | break; | |
274 | default: | |
275 | sr_info("ols: unknown token 0x%.2x: '%s'", | |
276 | token, tmp_str->str); | |
277 | break; | |
278 | } | |
279 | g_string_free(tmp_str, TRUE); | |
280 | break; | |
281 | case 1: | |
282 | /* 32-bit unsigned integer */ | |
283 | if (serial_read(fd, &tmp_int, 4) != 4) | |
284 | break; | |
285 | tmp_int = reverse32(tmp_int); | |
286 | sr_dbg("ols: got metadata key 0x%.2x value 0x%.8x", | |
287 | key, tmp_int); | |
288 | switch (token) { | |
289 | case 0x00: | |
290 | /* Number of usable probes */ | |
291 | ols->num_probes = tmp_int; | |
292 | break; | |
293 | case 0x01: | |
294 | /* Amount of sample memory available (bytes) */ | |
295 | ols->max_samples = tmp_int; | |
296 | break; | |
297 | case 0x02: | |
298 | /* Amount of dynamic memory available (bytes) */ | |
299 | /* what is this for? */ | |
300 | break; | |
301 | case 0x03: | |
302 | /* Maximum sample rate (hz) */ | |
303 | ols->max_samplerate = tmp_int; | |
304 | break; | |
305 | case 0x04: | |
306 | /* protocol version */ | |
307 | ols->protocol_version = tmp_int; | |
308 | break; | |
309 | default: | |
310 | sr_info("ols: unknown token 0x%.2x: 0x%.8x", | |
311 | token, tmp_int); | |
312 | break; | |
313 | } | |
314 | break; | |
315 | case 2: | |
316 | /* 8-bit unsigned integer */ | |
317 | if (serial_read(fd, &tmp_c, 1) != 1) | |
318 | break; | |
319 | sr_dbg("ols: got metadata key 0x%.2x value 0x%.2x", | |
320 | key, tmp_c); | |
321 | switch (token) { | |
322 | case 0x00: | |
323 | /* Number of usable probes */ | |
324 | ols->num_probes = tmp_c; | |
325 | break; | |
326 | case 0x01: | |
327 | /* protocol version */ | |
328 | ols->protocol_version = tmp_c; | |
329 | break; | |
330 | default: | |
331 | sr_info("ols: unknown token 0x%.2x: 0x%.2x", | |
332 | token, tmp_c); | |
333 | break; | |
334 | } | |
335 | break; | |
336 | default: | |
337 | /* unknown type */ | |
338 | break; | |
339 | } | |
340 | } | |
341 | ||
342 | sdi->model = devicename->str; | |
343 | sdi->version = version->str; | |
344 | g_string_free(devicename, FALSE); | |
345 | g_string_free(version, FALSE); | |
346 | ||
347 | return sdi; | |
348 | } | |
349 | ||
350 | static int hw_init(const char *deviceinfo) | |
351 | { | |
352 | struct sr_device_instance *sdi; | |
353 | struct ols_device *ols; | |
354 | GSList *ports, *l; | |
355 | GPollFD *fds, probefd; | |
356 | int devcnt, final_devcnt, num_ports, fd, ret, i; | |
357 | char buf[8], **device_names, **serial_params; | |
358 | ||
359 | final_devcnt = 0; | |
360 | ||
361 | if (deviceinfo) | |
362 | ports = g_slist_append(NULL, strdup(deviceinfo)); | |
363 | else | |
364 | /* No specific device given, so scan all serial ports. */ | |
365 | ports = list_serial_ports(); | |
366 | ||
367 | num_ports = g_slist_length(ports); | |
368 | ||
369 | if (!(fds = g_try_malloc0(num_ports * sizeof(GPollFD)))) { | |
370 | sr_err("ols: %s: fds malloc failed", __func__); | |
371 | goto hw_init_free_ports; /* TODO: SR_ERR_MALLOC. */ | |
372 | } | |
373 | ||
374 | if (!(device_names = g_try_malloc(num_ports * sizeof(char *)))) { | |
375 | sr_err("ols: %s: device_names malloc failed", __func__); | |
376 | goto hw_init_free_fds; /* TODO: SR_ERR_MALLOC. */ | |
377 | } | |
378 | ||
379 | if (!(serial_params = g_try_malloc(num_ports * sizeof(char *)))) { | |
380 | sr_err("ols: %s: serial_params malloc failed", __func__); | |
381 | goto hw_init_free_device_names; /* TODO: SR_ERR_MALLOC. */ | |
382 | } | |
383 | ||
384 | devcnt = 0; | |
385 | for (l = ports; l; l = l->next) { | |
386 | /* The discovery procedure is like this: first send the Reset | |
387 | * command (0x00) 5 times, since the device could be anywhere | |
388 | * in a 5-byte command. Then send the ID command (0x02). | |
389 | * If the device responds with 4 bytes ("OLS1" or "SLA1"), we | |
390 | * have a match. | |
391 | * | |
392 | * Since it may take the device a while to respond at 115Kb/s, | |
393 | * we do all the sending first, then wait for all of them to | |
394 | * respond with g_poll(). | |
395 | */ | |
396 | sr_info("ols: probing %s...", (char *)l->data); | |
397 | fd = serial_open(l->data, O_RDWR | O_NONBLOCK); | |
398 | if (fd != -1) { | |
399 | serial_params[devcnt] = serial_backup_params(fd); | |
400 | serial_set_params(fd, 115200, 8, 0, 1, 2); | |
401 | ret = SR_OK; | |
402 | for (i = 0; i < 5; i++) { | |
403 | if ((ret = send_shortcommand(fd, | |
404 | CMD_RESET)) != SR_OK) { | |
405 | /* Serial port is not writable. */ | |
406 | break; | |
407 | } | |
408 | } | |
409 | if (ret != SR_OK) { | |
410 | serial_restore_params(fd, | |
411 | serial_params[devcnt]); | |
412 | serial_close(fd); | |
413 | continue; | |
414 | } | |
415 | send_shortcommand(fd, CMD_ID); | |
416 | fds[devcnt].fd = fd; | |
417 | fds[devcnt].events = G_IO_IN; | |
418 | device_names[devcnt] = strdup(l->data); | |
419 | devcnt++; | |
420 | } | |
421 | free(l->data); | |
422 | } | |
423 | ||
424 | /* 2ms isn't enough for reliable transfer with pl2303, let's try 10 */ | |
425 | usleep(10000); | |
426 | ||
427 | g_poll(fds, devcnt, 1); | |
428 | ||
429 | for (i = 0; i < devcnt; i++) { | |
430 | if (fds[i].revents != G_IO_IN) | |
431 | continue; | |
432 | if (serial_read(fds[i].fd, buf, 4) != 4) | |
433 | continue; | |
434 | if (strncmp(buf, "1SLO", 4) && strncmp(buf, "1ALS", 4)) | |
435 | continue; | |
436 | ||
437 | /* definitely using the OLS protocol, check if it supports | |
438 | * the metadata command | |
439 | */ | |
440 | send_shortcommand(fds[i].fd, CMD_METADATA); | |
441 | probefd.fd = fds[i].fd; | |
442 | probefd.events = G_IO_IN; | |
443 | if (g_poll(&probefd, 1, 10) > 0) { | |
444 | /* got metadata */ | |
445 | sdi = get_metadata(fds[i].fd); | |
446 | sdi->index = final_devcnt; | |
447 | } else { | |
448 | /* not an OLS -- some other board that uses the sump protocol */ | |
449 | sdi = sr_device_instance_new(final_devcnt, SR_ST_INACTIVE, | |
450 | "Sump", "Logic Analyzer", "v1.0"); | |
451 | ols = ols_device_new(); | |
452 | ols->num_probes = 32; | |
453 | sdi->priv = ols; | |
454 | } | |
455 | sdi->serial = sr_serial_device_instance_new(device_names[i], -1); | |
456 | device_instances = g_slist_append(device_instances, sdi); | |
457 | final_devcnt++; | |
458 | serial_close(fds[i].fd); | |
459 | fds[i].fd = 0; | |
460 | } | |
461 | ||
462 | /* clean up after all the probing */ | |
463 | for (i = 0; i < devcnt; i++) { | |
464 | if (fds[i].fd != 0) { | |
465 | serial_restore_params(fds[i].fd, serial_params[i]); | |
466 | serial_close(fds[i].fd); | |
467 | } | |
468 | free(serial_params[i]); | |
469 | free(device_names[i]); | |
470 | } | |
471 | ||
472 | g_free(serial_params); | |
473 | hw_init_free_device_names: | |
474 | g_free(device_names); | |
475 | hw_init_free_fds: | |
476 | g_free(fds); | |
477 | hw_init_free_ports: | |
478 | g_slist_free(ports); | |
479 | ||
480 | return final_devcnt; | |
481 | } | |
482 | ||
483 | static int hw_opendev(int device_index) | |
484 | { | |
485 | struct sr_device_instance *sdi; | |
486 | ||
487 | if (!(sdi = sr_get_device_instance(device_instances, device_index))) | |
488 | return SR_ERR; | |
489 | ||
490 | sdi->serial->fd = serial_open(sdi->serial->port, O_RDWR); | |
491 | if (sdi->serial->fd == -1) | |
492 | return SR_ERR; | |
493 | ||
494 | sdi->status = SR_ST_ACTIVE; | |
495 | ||
496 | return SR_OK; | |
497 | } | |
498 | ||
499 | static int hw_closedev(int device_index) | |
500 | { | |
501 | struct sr_device_instance *sdi; | |
502 | ||
503 | if (!(sdi = sr_get_device_instance(device_instances, device_index))) { | |
504 | sr_err("ols: %s: sdi was NULL", __func__); | |
505 | return SR_ERR; /* TODO: SR_ERR_ARG? */ | |
506 | } | |
507 | ||
508 | /* TODO */ | |
509 | if (sdi->serial->fd != -1) { | |
510 | serial_close(sdi->serial->fd); | |
511 | sdi->serial->fd = -1; | |
512 | sdi->status = SR_ST_INACTIVE; | |
513 | } | |
514 | ||
515 | return SR_OK; | |
516 | } | |
517 | ||
518 | static void hw_cleanup(void) | |
519 | { | |
520 | GSList *l; | |
521 | struct sr_device_instance *sdi; | |
522 | ||
523 | /* Properly close and free all devices. */ | |
524 | for (l = device_instances; l; l = l->next) { | |
525 | sdi = l->data; | |
526 | if (sdi->serial->fd != -1) | |
527 | serial_close(sdi->serial->fd); | |
528 | sr_device_instance_free(sdi); | |
529 | } | |
530 | g_slist_free(device_instances); | |
531 | device_instances = NULL; | |
532 | } | |
533 | ||
534 | static void *hw_get_device_info(int device_index, int device_info_id) | |
535 | { | |
536 | struct sr_device_instance *sdi; | |
537 | struct ols_device *ols; | |
538 | void *info; | |
539 | ||
540 | if (!(sdi = sr_get_device_instance(device_instances, device_index))) | |
541 | return NULL; | |
542 | ols = sdi->priv; | |
543 | ||
544 | info = NULL; | |
545 | switch (device_info_id) { | |
546 | case SR_DI_INSTANCE: | |
547 | info = sdi; | |
548 | break; | |
549 | case SR_DI_NUM_PROBES: | |
550 | info = GINT_TO_POINTER(NUM_PROBES); | |
551 | break; | |
552 | case SR_DI_PROBE_NAMES: | |
553 | info = probe_names; | |
554 | break; | |
555 | case SR_DI_SAMPLERATES: | |
556 | info = &samplerates; | |
557 | break; | |
558 | case SR_DI_TRIGGER_TYPES: | |
559 | info = (char *)TRIGGER_TYPES; | |
560 | break; | |
561 | case SR_DI_CUR_SAMPLERATE: | |
562 | info = &ols->cur_samplerate; | |
563 | break; | |
564 | } | |
565 | ||
566 | return info; | |
567 | } | |
568 | ||
569 | static int hw_get_status(int device_index) | |
570 | { | |
571 | struct sr_device_instance *sdi; | |
572 | ||
573 | if (!(sdi = sr_get_device_instance(device_instances, device_index))) | |
574 | return SR_ST_NOT_FOUND; | |
575 | ||
576 | return sdi->status; | |
577 | } | |
578 | ||
579 | static int *hw_get_capabilities(void) | |
580 | { | |
581 | return capabilities; | |
582 | } | |
583 | ||
584 | static int set_configuration_samplerate(struct sr_device_instance *sdi, | |
585 | uint64_t samplerate) | |
586 | { | |
587 | struct ols_device *ols; | |
588 | ||
589 | ols = sdi->priv; | |
590 | if (ols->max_samplerate) { | |
591 | if (samplerate > ols->max_samplerate) | |
592 | return SR_ERR_SAMPLERATE; | |
593 | } else if (samplerate < samplerates.low || samplerate > samplerates.high) | |
594 | return SR_ERR_SAMPLERATE; | |
595 | ||
596 | if (samplerate > CLOCK_RATE) { | |
597 | ols->flag_reg |= FLAG_DEMUX; | |
598 | ols->cur_samplerate_divider = (CLOCK_RATE * 2 / samplerate) - 1; | |
599 | } else { | |
600 | ols->flag_reg &= ~FLAG_DEMUX; | |
601 | ols->cur_samplerate_divider = (CLOCK_RATE / samplerate) - 1; | |
602 | } | |
603 | ||
604 | /* Calculate actual samplerate used and complain if it is different | |
605 | * from the requested. | |
606 | */ | |
607 | ols->cur_samplerate = CLOCK_RATE / (ols->cur_samplerate_divider + 1); | |
608 | if(ols->flag_reg & FLAG_DEMUX) | |
609 | ols->cur_samplerate *= 2; | |
610 | ols->period_ps = 1000000000000 / ols->cur_samplerate; | |
611 | if(ols->cur_samplerate != samplerate) | |
612 | sr_warn("ols: can't match samplerate %" PRIu64 ", using %" PRIu64, | |
613 | samplerate, ols->cur_samplerate); | |
614 | ||
615 | return SR_OK; | |
616 | } | |
617 | ||
618 | static int hw_set_configuration(int device_index, int capability, void *value) | |
619 | { | |
620 | struct sr_device_instance *sdi; | |
621 | struct ols_device *ols; | |
622 | int ret; | |
623 | uint64_t *tmp_u64; | |
624 | ||
625 | if (!(sdi = sr_get_device_instance(device_instances, device_index))) | |
626 | return SR_ERR; | |
627 | ols = sdi->priv; | |
628 | ||
629 | if (sdi->status != SR_ST_ACTIVE) | |
630 | return SR_ERR; | |
631 | ||
632 | switch (capability) { | |
633 | case SR_HWCAP_SAMPLERATE: | |
634 | tmp_u64 = value; | |
635 | ret = set_configuration_samplerate(sdi, *tmp_u64); | |
636 | break; | |
637 | case SR_HWCAP_PROBECONFIG: | |
638 | ret = configure_probes(ols, (GSList *) value); | |
639 | break; | |
640 | case SR_HWCAP_LIMIT_SAMPLES: | |
641 | tmp_u64 = value; | |
642 | if (*tmp_u64 < MIN_NUM_SAMPLES) | |
643 | return SR_ERR; | |
644 | if (*tmp_u64 > ols->max_samples) | |
645 | sr_warn("ols: sample limit exceeds hw max"); | |
646 | ols->limit_samples = *tmp_u64; | |
647 | sr_info("ols: sample limit %" PRIu64, ols->limit_samples); | |
648 | ret = SR_OK; | |
649 | break; | |
650 | case SR_HWCAP_CAPTURE_RATIO: | |
651 | tmp_u64 = value; | |
652 | ols->capture_ratio = *tmp_u64; | |
653 | if (ols->capture_ratio < 0 || ols->capture_ratio > 100) { | |
654 | ols->capture_ratio = 0; | |
655 | ret = SR_ERR; | |
656 | } else | |
657 | ret = SR_OK; | |
658 | break; | |
659 | case SR_HWCAP_RLE: | |
660 | if (GPOINTER_TO_INT(value)) { | |
661 | sr_info("ols: enabling RLE"); | |
662 | ols->flag_reg |= FLAG_RLE; | |
663 | } | |
664 | ret = SR_OK; | |
665 | break; | |
666 | default: | |
667 | ret = SR_ERR; | |
668 | } | |
669 | ||
670 | return ret; | |
671 | } | |
672 | ||
673 | static int receive_data(int fd, int revents, void *session_data) | |
674 | { | |
675 | struct sr_datafeed_packet packet; | |
676 | struct sr_datafeed_logic logic; | |
677 | struct sr_device_instance *sdi; | |
678 | struct ols_device *ols; | |
679 | GSList *l; | |
680 | int num_channels, offset, i, j; | |
681 | unsigned char byte; | |
682 | ||
683 | /* find this device's ols_device struct by its fd */ | |
684 | ols = NULL; | |
685 | for (l = device_instances; l; l = l->next) { | |
686 | sdi = l->data; | |
687 | if (sdi->serial->fd == fd) { | |
688 | ols = sdi->priv; | |
689 | break; | |
690 | } | |
691 | } | |
692 | if (!ols) | |
693 | /* shouldn't happen */ | |
694 | return TRUE; | |
695 | ||
696 | if (ols->num_transfers++ == 0) { | |
697 | /* | |
698 | * First time round, means the device started sending data, | |
699 | * and will not stop until done. If it stops sending for | |
700 | * longer than it takes to send a byte, that means it's | |
701 | * finished. We'll double that to 30ms to be sure... | |
702 | */ | |
703 | sr_source_remove(fd); | |
704 | sr_source_add(fd, G_IO_IN, 30, receive_data, session_data); | |
705 | ols->raw_sample_buf = g_try_malloc(ols->limit_samples * 4); | |
706 | if (!ols->raw_sample_buf) { | |
707 | sr_err("ols: %s: ols->raw_sample_buf malloc failed", | |
708 | __func__); | |
709 | return FALSE; | |
710 | } | |
711 | /* fill with 1010... for debugging */ | |
712 | memset(ols->raw_sample_buf, 0x82, ols->limit_samples * 4); | |
713 | } | |
714 | ||
715 | num_channels = 0; | |
716 | for (i = 0x20; i > 0x02; i /= 2) { | |
717 | if ((ols->flag_reg & i) == 0) | |
718 | num_channels++; | |
719 | } | |
720 | ||
721 | if (revents == G_IO_IN) { | |
722 | if (serial_read(fd, &byte, 1) != 1) | |
723 | return FALSE; | |
724 | ||
725 | /* Ignore it if we've read enough. */ | |
726 | if (ols->num_samples >= ols->limit_samples) | |
727 | return TRUE; | |
728 | ||
729 | ols->sample[ols->num_bytes++] = byte; | |
730 | sr_dbg("ols: received byte 0x%.2x", byte); | |
731 | if (ols->num_bytes == num_channels) { | |
732 | /* Got a full sample. */ | |
733 | sr_dbg("ols: received sample 0x%.*x", | |
734 | ols->num_bytes * 2, *(int *)ols->sample); | |
735 | if (ols->flag_reg & FLAG_RLE) { | |
736 | /* | |
737 | * In RLE mode -1 should never come in as a | |
738 | * sample, because bit 31 is the "count" flag. | |
739 | */ | |
740 | if (ols->sample[ols->num_bytes - 1] & 0x80) { | |
741 | ols->sample[ols->num_bytes - 1] &= 0x7f; | |
742 | /* | |
743 | * FIXME: This will only work on | |
744 | * little-endian systems. | |
745 | */ | |
746 | ols->rle_count = *(int *)(ols->sample); | |
747 | sr_dbg("ols: RLE count = %d", ols->rle_count); | |
748 | ols->num_bytes = 0; | |
749 | return TRUE; | |
750 | } | |
751 | } | |
752 | ols->num_samples += ols->rle_count + 1; | |
753 | if (ols->num_samples > ols->limit_samples) { | |
754 | /* Save us from overrunning the buffer. */ | |
755 | ols->rle_count -= ols->num_samples - ols->limit_samples; | |
756 | ols->num_samples = ols->limit_samples; | |
757 | } | |
758 | ||
759 | if (num_channels < 4) { | |
760 | /* | |
761 | * Some channel groups may have been turned | |
762 | * off, to speed up transfer between the | |
763 | * hardware and the PC. Expand that here before | |
764 | * submitting it over the session bus -- | |
765 | * whatever is listening on the bus will be | |
766 | * expecting a full 32-bit sample, based on | |
767 | * the number of probes. | |
768 | */ | |
769 | j = 0; | |
770 | memset(ols->tmp_sample, 0, 4); | |
771 | for (i = 0; i < 4; i++) { | |
772 | if (((ols->flag_reg >> 2) & (1 << i)) == 0) { | |
773 | /* | |
774 | * This channel group was | |
775 | * enabled, copy from received | |
776 | * sample. | |
777 | */ | |
778 | ols->tmp_sample[i] = ols->sample[j++]; | |
779 | } | |
780 | } | |
781 | memcpy(ols->sample, ols->tmp_sample, 4); | |
782 | sr_dbg("ols: full sample 0x%.8x", *(int *)ols->sample); | |
783 | } | |
784 | ||
785 | /* the OLS sends its sample buffer backwards. | |
786 | * store it in reverse order here, so we can dump | |
787 | * this on the session bus later. | |
788 | */ | |
789 | offset = (ols->limit_samples - ols->num_samples) * 4; | |
790 | for (i = 0; i <= ols->rle_count; i++) { | |
791 | memcpy(ols->raw_sample_buf + offset + (i * 4), | |
792 | ols->sample, 4); | |
793 | } | |
794 | memset(ols->sample, 0, 4); | |
795 | ols->num_bytes = 0; | |
796 | ols->rle_count = 0; | |
797 | } | |
798 | } else { | |
799 | /* | |
800 | * This is the main loop telling us a timeout was reached, or | |
801 | * we've acquired all the samples we asked for -- we're done. | |
802 | * Send the (properly-ordered) buffer to the frontend. | |
803 | */ | |
804 | if (ols->trigger_at != -1) { | |
805 | /* a trigger was set up, so we need to tell the frontend | |
806 | * about it. | |
807 | */ | |
808 | if (ols->trigger_at > 0) { | |
809 | /* there are pre-trigger samples, send those first */ | |
810 | packet.type = SR_DF_LOGIC; | |
811 | packet.timeoffset = 0; | |
812 | packet.duration = ols->trigger_at * ols->period_ps; | |
813 | packet.payload = &logic; | |
814 | logic.length = ols->trigger_at * 4; | |
815 | logic.unitsize = 4; | |
816 | logic.data = ols->raw_sample_buf + | |
817 | (ols->limit_samples - ols->num_samples) * 4; | |
818 | sr_session_bus(session_data, &packet); | |
819 | } | |
820 | ||
821 | /* send the trigger */ | |
822 | packet.type = SR_DF_TRIGGER; | |
823 | packet.timeoffset = ols->trigger_at * ols->period_ps; | |
824 | packet.duration = 0; | |
825 | sr_session_bus(session_data, &packet); | |
826 | ||
827 | /* send post-trigger samples */ | |
828 | packet.type = SR_DF_LOGIC; | |
829 | packet.timeoffset = ols->trigger_at * ols->period_ps; | |
830 | packet.duration = (ols->num_samples - ols->trigger_at) * ols->period_ps; | |
831 | packet.payload = &logic; | |
832 | logic.length = (ols->num_samples * 4) - (ols->trigger_at * 4); | |
833 | logic.unitsize = 4; | |
834 | logic.data = ols->raw_sample_buf + ols->trigger_at * 4 + | |
835 | (ols->limit_samples - ols->num_samples) * 4; | |
836 | sr_session_bus(session_data, &packet); | |
837 | } else { | |
838 | /* no trigger was used */ | |
839 | packet.type = SR_DF_LOGIC; | |
840 | packet.timeoffset = 0; | |
841 | packet.duration = ols->num_samples * ols->period_ps; | |
842 | packet.payload = &logic; | |
843 | logic.length = ols->num_samples * 4; | |
844 | logic.unitsize = 4; | |
845 | logic.data = ols->raw_sample_buf + | |
846 | (ols->limit_samples - ols->num_samples) * 4; | |
847 | sr_session_bus(session_data, &packet); | |
848 | } | |
849 | g_free(ols->raw_sample_buf); | |
850 | ||
851 | serial_flush(fd); | |
852 | serial_close(fd); | |
853 | packet.type = SR_DF_END; | |
854 | packet.timeoffset = ols->num_samples * ols->period_ps; | |
855 | packet.duration = 0; | |
856 | sr_session_bus(session_data, &packet); | |
857 | } | |
858 | ||
859 | return TRUE; | |
860 | } | |
861 | ||
862 | static int hw_start_acquisition(int device_index, gpointer session_data) | |
863 | { | |
864 | struct sr_datafeed_packet *packet; | |
865 | struct sr_datafeed_header *header; | |
866 | struct sr_device_instance *sdi; | |
867 | struct ols_device *ols; | |
868 | uint32_t trigger_config[4]; | |
869 | uint32_t data; | |
870 | uint16_t readcount, delaycount; | |
871 | uint8_t changrp_mask; | |
872 | int num_channels; | |
873 | int i; | |
874 | ||
875 | if (!(sdi = sr_get_device_instance(device_instances, device_index))) | |
876 | return SR_ERR; | |
877 | ||
878 | ols = sdi->priv; | |
879 | ||
880 | if (sdi->status != SR_ST_ACTIVE) | |
881 | return SR_ERR; | |
882 | ||
883 | /* | |
884 | * Enable/disable channel groups in the flag register according to the | |
885 | * probe mask. Calculate this here, because num_channels is needed | |
886 | * to limit readcount. | |
887 | */ | |
888 | changrp_mask = 0; | |
889 | num_channels = 0; | |
890 | for (i = 0; i < 4; i++) { | |
891 | if (ols->probe_mask & (0xff << (i * 8))) { | |
892 | changrp_mask |= (1 << i); | |
893 | num_channels++; | |
894 | } | |
895 | } | |
896 | ||
897 | /* | |
898 | * Limit readcount to prevent reading past the end of the hardware | |
899 | * buffer. | |
900 | */ | |
901 | readcount = MIN(ols->max_samples / num_channels, ols->limit_samples) / 4; | |
902 | ||
903 | memset(trigger_config, 0, 16); | |
904 | trigger_config[ols->num_stages - 1] |= 0x08; | |
905 | if (ols->trigger_mask[0]) { | |
906 | delaycount = readcount * (1 - ols->capture_ratio / 100.0); | |
907 | ols->trigger_at = (readcount - delaycount) * 4 - ols->num_stages; | |
908 | ||
909 | if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_MASK_0, | |
910 | reverse32(ols->trigger_mask[0])) != SR_OK) | |
911 | return SR_ERR; | |
912 | if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_VALUE_0, | |
913 | reverse32(ols->trigger_value[0])) != SR_OK) | |
914 | return SR_ERR; | |
915 | if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_CONFIG_0, | |
916 | trigger_config[0]) != SR_OK) | |
917 | return SR_ERR; | |
918 | ||
919 | if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_MASK_1, | |
920 | reverse32(ols->trigger_mask[1])) != SR_OK) | |
921 | return SR_ERR; | |
922 | if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_VALUE_1, | |
923 | reverse32(ols->trigger_value[1])) != SR_OK) | |
924 | return SR_ERR; | |
925 | if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_CONFIG_1, | |
926 | trigger_config[1]) != SR_OK) | |
927 | return SR_ERR; | |
928 | ||
929 | if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_MASK_2, | |
930 | reverse32(ols->trigger_mask[2])) != SR_OK) | |
931 | return SR_ERR; | |
932 | if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_VALUE_2, | |
933 | reverse32(ols->trigger_value[2])) != SR_OK) | |
934 | return SR_ERR; | |
935 | if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_CONFIG_2, | |
936 | trigger_config[2]) != SR_OK) | |
937 | return SR_ERR; | |
938 | ||
939 | if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_MASK_3, | |
940 | reverse32(ols->trigger_mask[3])) != SR_OK) | |
941 | return SR_ERR; | |
942 | if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_VALUE_3, | |
943 | reverse32(ols->trigger_value[3])) != SR_OK) | |
944 | return SR_ERR; | |
945 | if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_CONFIG_3, | |
946 | trigger_config[3]) != SR_OK) | |
947 | return SR_ERR; | |
948 | } else { | |
949 | if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_MASK_0, | |
950 | ols->trigger_mask[0]) != SR_OK) | |
951 | return SR_ERR; | |
952 | if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_VALUE_0, | |
953 | ols->trigger_value[0]) != SR_OK) | |
954 | return SR_ERR; | |
955 | if (send_longcommand(sdi->serial->fd, CMD_SET_TRIGGER_CONFIG_0, | |
956 | 0x00000008) != SR_OK) | |
957 | return SR_ERR; | |
958 | delaycount = readcount; | |
959 | } | |
960 | ||
961 | sr_info("ols: setting samplerate to %" PRIu64 " Hz (divider %u, " | |
962 | "demux %s)", ols->cur_samplerate, ols->cur_samplerate_divider, | |
963 | ols->flag_reg & FLAG_DEMUX ? "on" : "off"); | |
964 | if (send_longcommand(sdi->serial->fd, CMD_SET_DIVIDER, | |
965 | reverse32(ols->cur_samplerate_divider)) != SR_OK) | |
966 | return SR_ERR; | |
967 | ||
968 | /* Send sample limit and pre/post-trigger capture ratio. */ | |
969 | data = ((readcount - 1) & 0xffff) << 16; | |
970 | data |= (delaycount - 1) & 0xffff; | |
971 | if (send_longcommand(sdi->serial->fd, CMD_CAPTURE_SIZE, reverse16(data)) != SR_OK) | |
972 | return SR_ERR; | |
973 | ||
974 | /* The flag register wants them here, and 1 means "disable channel". */ | |
975 | ols->flag_reg |= ~(changrp_mask << 2) & 0x3c; | |
976 | ols->flag_reg |= FLAG_FILTER; | |
977 | ols->rle_count = 0; | |
978 | data = (ols->flag_reg << 24) | ((ols->flag_reg << 8) & 0xff0000); | |
979 | if (send_longcommand(sdi->serial->fd, CMD_SET_FLAGS, data) != SR_OK) | |
980 | return SR_ERR; | |
981 | ||
982 | /* Start acquisition on the device. */ | |
983 | if (send_shortcommand(sdi->serial->fd, CMD_RUN) != SR_OK) | |
984 | return SR_ERR; | |
985 | ||
986 | sr_source_add(sdi->serial->fd, G_IO_IN, -1, receive_data, | |
987 | session_data); | |
988 | ||
989 | if (!(packet = g_try_malloc(sizeof(struct sr_datafeed_packet)))) { | |
990 | sr_err("ols: %s: packet malloc failed", __func__); | |
991 | return SR_ERR_MALLOC; | |
992 | } | |
993 | ||
994 | if (!(header = g_try_malloc(sizeof(struct sr_datafeed_header)))) { | |
995 | sr_err("ols: %s: header malloc failed", __func__); | |
996 | g_free(packet); | |
997 | return SR_ERR_MALLOC; | |
998 | } | |
999 | ||
1000 | /* Send header packet to the session bus. */ | |
1001 | packet->type = SR_DF_HEADER; | |
1002 | packet->payload = (unsigned char *)header; | |
1003 | header->feed_version = 1; | |
1004 | gettimeofday(&header->starttime, NULL); | |
1005 | header->samplerate = ols->cur_samplerate; | |
1006 | header->num_logic_probes = NUM_PROBES; | |
1007 | header->num_analog_probes = 0; | |
1008 | sr_session_bus(session_data, packet); | |
1009 | ||
1010 | g_free(header); | |
1011 | g_free(packet); | |
1012 | ||
1013 | return SR_OK; | |
1014 | } | |
1015 | ||
1016 | static void hw_stop_acquisition(int device_index, gpointer session_device_id) | |
1017 | { | |
1018 | struct sr_datafeed_packet packet; | |
1019 | ||
1020 | /* Avoid compiler warnings. */ | |
1021 | (void)device_index; | |
1022 | ||
1023 | packet.type = SR_DF_END; | |
1024 | sr_session_bus(session_device_id, &packet); | |
1025 | } | |
1026 | ||
1027 | struct sr_device_plugin ols_plugin_info = { | |
1028 | .name = "ols", | |
1029 | .longname = "Openbench Logic Sniffer", | |
1030 | .api_version = 1, | |
1031 | .init = hw_init, | |
1032 | .cleanup = hw_cleanup, | |
1033 | .opendev = hw_opendev, | |
1034 | .closedev = hw_closedev, | |
1035 | .get_device_info = hw_get_device_info, | |
1036 | .get_status = hw_get_status, | |
1037 | .get_capabilities = hw_get_capabilities, | |
1038 | .set_configuration = hw_set_configuration, | |
1039 | .start_acquisition = hw_start_acquisition, | |
1040 | .stop_acquisition = hw_stop_acquisition, | |
1041 | }; |