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1 | /* | |
2 | * This file is part of the sigrok project. | |
3 | * | |
4 | * Copyright (C) 2010-2012 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 <stdlib.h> | |
22 | #include <sys/time.h> | |
23 | #include <inttypes.h> | |
24 | #include <glib.h> | |
25 | #include <libusb.h> | |
26 | #include "config.h" | |
27 | #include "sigrok.h" | |
28 | #include "sigrok-internal.h" | |
29 | #include "saleae-logic.h" | |
30 | ||
31 | static struct fx2_profile supported_fx2[] = { | |
32 | /* Saleae Logic */ | |
33 | { 0x0925, 0x3881, 0x0925, 0x3881, "Saleae", "Logic", NULL, 8 }, | |
34 | /* default Cypress FX2 without EEPROM */ | |
35 | { 0x04b4, 0x8613, 0x0925, 0x3881, "Cypress", "FX2", NULL, 16 }, | |
36 | { 0, 0, 0, 0, 0, 0, 0, 0 } | |
37 | }; | |
38 | ||
39 | static int hwcaps[] = { | |
40 | SR_HWCAP_LOGIC_ANALYZER, | |
41 | SR_HWCAP_SAMPLERATE, | |
42 | ||
43 | /* These are really implemented in the driver, not the hardware. */ | |
44 | SR_HWCAP_LIMIT_SAMPLES, | |
45 | SR_HWCAP_CONTINUOUS, | |
46 | 0, | |
47 | }; | |
48 | ||
49 | /* | |
50 | * Probes are numbered 1-8. | |
51 | * | |
52 | * TODO: FX2 eval boards with the standard Cypress VID/PID can have 16 pins | |
53 | * or probes in theory, which is not supported by the Saleae Logic firmware. | |
54 | */ | |
55 | static const char *probe_names[] = { | |
56 | "0", | |
57 | "1", | |
58 | "2", | |
59 | "3", | |
60 | "4", | |
61 | "5", | |
62 | "6", | |
63 | "7", | |
64 | "8", | |
65 | "9", | |
66 | "10", | |
67 | "11", | |
68 | "12", | |
69 | "13", | |
70 | "14", | |
71 | "15", | |
72 | NULL, | |
73 | }; | |
74 | ||
75 | static uint64_t supported_samplerates[] = { | |
76 | SR_KHZ(200), | |
77 | SR_KHZ(250), | |
78 | SR_KHZ(500), | |
79 | SR_MHZ(1), | |
80 | SR_MHZ(2), | |
81 | SR_MHZ(4), | |
82 | SR_MHZ(8), | |
83 | SR_MHZ(12), | |
84 | SR_MHZ(16), | |
85 | SR_MHZ(24), | |
86 | 0, | |
87 | }; | |
88 | ||
89 | static struct sr_samplerates samplerates = { | |
90 | SR_KHZ(200), | |
91 | SR_MHZ(24), | |
92 | SR_HZ(0), | |
93 | supported_samplerates, | |
94 | }; | |
95 | ||
96 | /* List of struct sr_dev_inst, maintained by dev_open()/dev_close(). */ | |
97 | static GSList *dev_insts = NULL; | |
98 | static libusb_context *usb_context = NULL; | |
99 | ||
100 | static int new_saleae_logic_firmware = 0; | |
101 | ||
102 | static int hw_dev_config_set(int dev_index, int hwcap, void *value); | |
103 | static int hw_dev_acquisition_stop(int dev_index, gpointer session_dev_id); | |
104 | ||
105 | /** | |
106 | * Check the USB configuration to determine if this is a Saleae Logic. | |
107 | * | |
108 | * @return 1 if the device's configuration profile match the Logic firmware's | |
109 | * configuration, 0 otherwise. | |
110 | */ | |
111 | static int check_conf_profile(libusb_device *dev) | |
112 | { | |
113 | struct libusb_device_descriptor des; | |
114 | struct libusb_config_descriptor *conf_dsc = NULL; | |
115 | const struct libusb_interface_descriptor *intf_dsc; | |
116 | int ret = -1; | |
117 | ||
118 | while (ret == -1) { | |
119 | /* Assume it's not a Saleae Logic unless proven wrong. */ | |
120 | ret = 0; | |
121 | ||
122 | if (libusb_get_device_descriptor(dev, &des) != 0) | |
123 | break; | |
124 | ||
125 | if (des.bNumConfigurations != 1) | |
126 | /* Need exactly 1 configuration. */ | |
127 | break; | |
128 | ||
129 | if (libusb_get_config_descriptor(dev, 0, &conf_dsc) != 0) | |
130 | break; | |
131 | ||
132 | if (conf_dsc->bNumInterfaces != 1) | |
133 | /* Need exactly 1 interface. */ | |
134 | break; | |
135 | ||
136 | if (conf_dsc->interface[0].num_altsetting != 1) | |
137 | /* Need just one alternate setting. */ | |
138 | break; | |
139 | ||
140 | intf_dsc = &(conf_dsc->interface[0].altsetting[0]); | |
141 | if (intf_dsc->bNumEndpoints == 4) { | |
142 | /* The new Saleae Logic firmware has 4 endpoints. */ | |
143 | new_saleae_logic_firmware = 1; | |
144 | } else if (intf_dsc->bNumEndpoints == 2) { | |
145 | /* The old Saleae Logic firmware has 2 endpoints. */ | |
146 | new_saleae_logic_firmware = 0; | |
147 | } else { | |
148 | /* Other number of endpoints -> not a Saleae Logic. */ | |
149 | break; | |
150 | } | |
151 | ||
152 | if ((intf_dsc->endpoint[0].bEndpointAddress & 0x8f) != | |
153 | (1 | LIBUSB_ENDPOINT_OUT)) | |
154 | /* The first endpoint should be 1 (outbound). */ | |
155 | break; | |
156 | ||
157 | if ((intf_dsc->endpoint[1].bEndpointAddress & 0x8f) != | |
158 | (2 | LIBUSB_ENDPOINT_IN)) | |
159 | /* The second endpoint should be 2 (inbound). */ | |
160 | break; | |
161 | ||
162 | /* TODO: The new firmware has 4 endpoints... */ | |
163 | ||
164 | /* If we made it here, it must be a Saleae Logic. */ | |
165 | ret = 1; | |
166 | } | |
167 | ||
168 | if (conf_dsc) | |
169 | libusb_free_config_descriptor(conf_dsc); | |
170 | ||
171 | return ret; | |
172 | } | |
173 | ||
174 | static int sl_open_dev(int dev_index) | |
175 | { | |
176 | libusb_device **devlist; | |
177 | struct libusb_device_descriptor des; | |
178 | struct sr_dev_inst *sdi; | |
179 | struct context *ctx; | |
180 | int err, skip, i; | |
181 | ||
182 | if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) | |
183 | return SR_ERR; | |
184 | ctx = sdi->priv; | |
185 | ||
186 | if (sdi->status == SR_ST_ACTIVE) | |
187 | /* already in use */ | |
188 | return SR_ERR; | |
189 | ||
190 | skip = 0; | |
191 | libusb_get_device_list(usb_context, &devlist); | |
192 | for (i = 0; devlist[i]; i++) { | |
193 | if ((err = libusb_get_device_descriptor(devlist[i], &des))) { | |
194 | sr_err("logic: failed to get device descriptor: %d", err); | |
195 | continue; | |
196 | } | |
197 | ||
198 | if (des.idVendor != ctx->profile->fw_vid | |
199 | || des.idProduct != ctx->profile->fw_pid) | |
200 | continue; | |
201 | ||
202 | if (sdi->status == SR_ST_INITIALIZING) { | |
203 | if (skip != dev_index) { | |
204 | /* Skip devices of this type that aren't the one we want. */ | |
205 | skip += 1; | |
206 | continue; | |
207 | } | |
208 | } else if (sdi->status == SR_ST_INACTIVE) { | |
209 | /* | |
210 | * This device is fully enumerated, so we need to find | |
211 | * this device by vendor, product, bus and address. | |
212 | */ | |
213 | if (libusb_get_bus_number(devlist[i]) != ctx->usb->bus | |
214 | || libusb_get_device_address(devlist[i]) != ctx->usb->address) | |
215 | /* this is not the one */ | |
216 | continue; | |
217 | } | |
218 | ||
219 | if (!(err = libusb_open(devlist[i], &ctx->usb->devhdl))) { | |
220 | if (ctx->usb->address == 0xff) | |
221 | /* | |
222 | * first time we touch this device after firmware upload, | |
223 | * so we don't know the address yet. | |
224 | */ | |
225 | ctx->usb->address = libusb_get_device_address(devlist[i]); | |
226 | ||
227 | sdi->status = SR_ST_ACTIVE; | |
228 | sr_info("logic: opened device %d on %d.%d interface %d", | |
229 | sdi->index, ctx->usb->bus, | |
230 | ctx->usb->address, USB_INTERFACE); | |
231 | } else { | |
232 | sr_err("logic: failed to open device: %d", err); | |
233 | } | |
234 | ||
235 | /* if we made it here, we handled the device one way or another */ | |
236 | break; | |
237 | } | |
238 | libusb_free_device_list(devlist, 1); | |
239 | ||
240 | if (sdi->status != SR_ST_ACTIVE) | |
241 | return SR_ERR; | |
242 | ||
243 | return SR_OK; | |
244 | } | |
245 | ||
246 | static void close_dev(struct sr_dev_inst *sdi) | |
247 | { | |
248 | struct context *ctx; | |
249 | ||
250 | ctx = sdi->priv; | |
251 | ||
252 | if (ctx->usb->devhdl == NULL) | |
253 | return; | |
254 | ||
255 | sr_info("logic: closing device %d on %d.%d interface %d", sdi->index, | |
256 | ctx->usb->bus, ctx->usb->address, USB_INTERFACE); | |
257 | libusb_release_interface(ctx->usb->devhdl, USB_INTERFACE); | |
258 | libusb_close(ctx->usb->devhdl); | |
259 | ctx->usb->devhdl = NULL; | |
260 | sdi->status = SR_ST_INACTIVE; | |
261 | } | |
262 | ||
263 | static int configure_probes(struct context *ctx, GSList *probes) | |
264 | { | |
265 | struct sr_probe *probe; | |
266 | GSList *l; | |
267 | int probe_bit, stage, i; | |
268 | char *tc; | |
269 | ||
270 | ctx->probe_mask = 0; | |
271 | for (i = 0; i < NUM_TRIGGER_STAGES; i++) { | |
272 | ctx->trigger_mask[i] = 0; | |
273 | ctx->trigger_value[i] = 0; | |
274 | } | |
275 | ||
276 | stage = -1; | |
277 | for (l = probes; l; l = l->next) { | |
278 | probe = (struct sr_probe *)l->data; | |
279 | if (probe->enabled == FALSE) | |
280 | continue; | |
281 | probe_bit = 1 << (probe->index - 1); | |
282 | ctx->probe_mask |= probe_bit; | |
283 | if (!(probe->trigger)) | |
284 | continue; | |
285 | ||
286 | stage = 0; | |
287 | for (tc = probe->trigger; *tc; tc++) { | |
288 | ctx->trigger_mask[stage] |= probe_bit; | |
289 | if (*tc == '1') | |
290 | ctx->trigger_value[stage] |= probe_bit; | |
291 | stage++; | |
292 | if (stage > NUM_TRIGGER_STAGES) | |
293 | return SR_ERR; | |
294 | } | |
295 | } | |
296 | ||
297 | if (stage == -1) | |
298 | /* | |
299 | * We didn't configure any triggers, make sure acquisition | |
300 | * doesn't wait for any. | |
301 | */ | |
302 | ctx->trigger_stage = TRIGGER_FIRED; | |
303 | else | |
304 | ctx->trigger_stage = 0; | |
305 | ||
306 | return SR_OK; | |
307 | } | |
308 | ||
309 | static struct context *fx2_dev_new(void) | |
310 | { | |
311 | struct context *ctx; | |
312 | ||
313 | if (!(ctx = g_try_malloc0(sizeof(struct context)))) { | |
314 | sr_err("logic: %s: ctx malloc failed", __func__); | |
315 | return NULL; | |
316 | } | |
317 | ctx->trigger_stage = TRIGGER_FIRED; | |
318 | ctx->usb = NULL; | |
319 | ||
320 | return ctx; | |
321 | } | |
322 | ||
323 | ||
324 | /* | |
325 | * API callbacks | |
326 | */ | |
327 | ||
328 | static int hw_init(const char *devinfo) | |
329 | { | |
330 | struct sr_dev_inst *sdi; | |
331 | struct libusb_device_descriptor des; | |
332 | struct fx2_profile *fx2_prof; | |
333 | struct context *ctx; | |
334 | libusb_device **devlist; | |
335 | int err, devcnt, i, j; | |
336 | ||
337 | /* Avoid compiler warnings. */ | |
338 | (void)devinfo; | |
339 | ||
340 | if (libusb_init(&usb_context) != 0) { | |
341 | sr_err("logic: Failed to initialize USB."); | |
342 | return 0; | |
343 | } | |
344 | ||
345 | /* Find all Saleae Logic devices and upload firmware to all of them. */ | |
346 | devcnt = 0; | |
347 | libusb_get_device_list(usb_context, &devlist); | |
348 | for (i = 0; devlist[i]; i++) { | |
349 | fx2_prof = NULL; | |
350 | err = libusb_get_device_descriptor(devlist[i], &des); | |
351 | if (err != 0) { | |
352 | sr_err("logic: failed to get device descriptor: %d", | |
353 | err); | |
354 | continue; | |
355 | } | |
356 | ||
357 | for (j = 0; supported_fx2[j].orig_vid; j++) { | |
358 | if (des.idVendor == supported_fx2[j].orig_vid | |
359 | && des.idProduct == supported_fx2[j].orig_pid) { | |
360 | fx2_prof = &supported_fx2[j]; | |
361 | break; | |
362 | } | |
363 | } | |
364 | if (!fx2_prof) | |
365 | /* not a supported VID/PID */ | |
366 | continue; | |
367 | ||
368 | sdi = sr_dev_inst_new(devcnt, SR_ST_INITIALIZING, | |
369 | fx2_prof->vendor, fx2_prof->model, fx2_prof->model_version); | |
370 | if (!sdi) | |
371 | return 0; | |
372 | ctx = fx2_dev_new(); | |
373 | ctx->profile = fx2_prof; | |
374 | sdi->priv = ctx; | |
375 | dev_insts = g_slist_append(dev_insts, sdi); | |
376 | ||
377 | if (check_conf_profile(devlist[i])) { | |
378 | /* Already has the firmware, so fix the new address. */ | |
379 | sr_dbg("logic: Found a Saleae Logic with %s firmware.", | |
380 | new_saleae_logic_firmware ? "new" : "old"); | |
381 | sdi->status = SR_ST_INACTIVE; | |
382 | ctx->usb = sr_usb_dev_inst_new | |
383 | (libusb_get_bus_number(devlist[i]), | |
384 | libusb_get_device_address(devlist[i]), NULL); | |
385 | } else { | |
386 | if (ezusb_upload_firmware(devlist[i], USB_CONFIGURATION, FIRMWARE) == SR_OK) | |
387 | /* Remember when the firmware on this device was updated */ | |
388 | g_get_current_time(&ctx->fw_updated); | |
389 | else | |
390 | sr_err("logic: firmware upload failed for " | |
391 | "device %d", devcnt); | |
392 | ctx->usb = sr_usb_dev_inst_new | |
393 | (libusb_get_bus_number(devlist[i]), 0xff, NULL); | |
394 | } | |
395 | devcnt++; | |
396 | } | |
397 | libusb_free_device_list(devlist, 1); | |
398 | ||
399 | return devcnt; | |
400 | } | |
401 | ||
402 | static int hw_dev_open(int dev_index) | |
403 | { | |
404 | GTimeVal cur_time; | |
405 | struct sr_dev_inst *sdi; | |
406 | struct context *ctx; | |
407 | int timediff, err; | |
408 | ||
409 | if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) | |
410 | return SR_ERR; | |
411 | ctx = sdi->priv; | |
412 | ||
413 | /* | |
414 | * if the firmware was recently uploaded, wait up to MAX_RENUM_DELAY ms | |
415 | * for the FX2 to renumerate | |
416 | */ | |
417 | err = 0; | |
418 | if (GTV_TO_MSEC(ctx->fw_updated) > 0) { | |
419 | sr_info("logic: waiting for device to reset"); | |
420 | /* takes at least 300ms for the FX2 to be gone from the USB bus */ | |
421 | g_usleep(300 * 1000); | |
422 | timediff = 0; | |
423 | while (timediff < MAX_RENUM_DELAY) { | |
424 | if ((err = sl_open_dev(dev_index)) == SR_OK) | |
425 | break; | |
426 | g_usleep(100 * 1000); | |
427 | g_get_current_time(&cur_time); | |
428 | timediff = GTV_TO_MSEC(cur_time) - GTV_TO_MSEC(ctx->fw_updated); | |
429 | } | |
430 | sr_info("logic: device came back after %d ms", timediff); | |
431 | } else { | |
432 | err = sl_open_dev(dev_index); | |
433 | } | |
434 | ||
435 | if (err != SR_OK) { | |
436 | sr_err("logic: unable to open device"); | |
437 | return SR_ERR; | |
438 | } | |
439 | ctx = sdi->priv; | |
440 | ||
441 | err = libusb_claim_interface(ctx->usb->devhdl, USB_INTERFACE); | |
442 | if (err != 0) { | |
443 | sr_err("logic: Unable to claim interface: %d", err); | |
444 | return SR_ERR; | |
445 | } | |
446 | ||
447 | if (ctx->cur_samplerate == 0) { | |
448 | /* Samplerate hasn't been set; default to the slowest one. */ | |
449 | if (hw_dev_config_set(dev_index, SR_HWCAP_SAMPLERATE, | |
450 | &supported_samplerates[0]) == SR_ERR) | |
451 | return SR_ERR; | |
452 | } | |
453 | ||
454 | return SR_OK; | |
455 | } | |
456 | ||
457 | static int hw_dev_close(int dev_index) | |
458 | { | |
459 | struct sr_dev_inst *sdi; | |
460 | ||
461 | if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) { | |
462 | sr_err("logic: %s: sdi was NULL", __func__); | |
463 | return SR_ERR; /* TODO: SR_ERR_ARG? */ | |
464 | } | |
465 | ||
466 | /* TODO */ | |
467 | close_dev(sdi); | |
468 | ||
469 | return SR_OK; | |
470 | } | |
471 | ||
472 | static int hw_cleanup(void) | |
473 | { | |
474 | GSList *l; | |
475 | struct sr_dev_inst *sdi; | |
476 | struct context *ctx; | |
477 | int ret = SR_OK; | |
478 | ||
479 | /* Properly close and free all devices. */ | |
480 | for (l = dev_insts; l; l = l->next) { | |
481 | if (!(sdi = l->data)) { | |
482 | /* Log error, but continue cleaning up the rest. */ | |
483 | sr_err("logic: %s: sdi was NULL, continuing", __func__); | |
484 | ret = SR_ERR_BUG; | |
485 | continue; | |
486 | } | |
487 | if (!(ctx = sdi->priv)) { | |
488 | /* Log error, but continue cleaning up the rest. */ | |
489 | sr_err("logic: %s: sdi->priv was NULL, continuing", | |
490 | __func__); | |
491 | ret = SR_ERR_BUG; | |
492 | continue; | |
493 | } | |
494 | close_dev(sdi); | |
495 | sr_usb_dev_inst_free(ctx->usb); | |
496 | sr_dev_inst_free(sdi); | |
497 | } | |
498 | ||
499 | g_slist_free(dev_insts); | |
500 | dev_insts = NULL; | |
501 | ||
502 | if (usb_context) | |
503 | libusb_exit(usb_context); | |
504 | usb_context = NULL; | |
505 | ||
506 | return ret; | |
507 | } | |
508 | ||
509 | static void *hw_dev_info_get(int dev_index, int dev_info_id) | |
510 | { | |
511 | struct sr_dev_inst *sdi; | |
512 | struct context *ctx; | |
513 | void *info = NULL; | |
514 | ||
515 | if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) | |
516 | return NULL; | |
517 | ctx = sdi->priv; | |
518 | ||
519 | switch (dev_info_id) { | |
520 | case SR_DI_INST: | |
521 | info = sdi; | |
522 | break; | |
523 | case SR_DI_NUM_PROBES: | |
524 | info = GINT_TO_POINTER(ctx->profile->num_probes); | |
525 | break; | |
526 | case SR_DI_PROBE_NAMES: | |
527 | info = probe_names; | |
528 | break; | |
529 | case SR_DI_SAMPLERATES: | |
530 | info = &samplerates; | |
531 | break; | |
532 | case SR_DI_TRIGGER_TYPES: | |
533 | info = TRIGGER_TYPES; | |
534 | break; | |
535 | case SR_DI_CUR_SAMPLERATE: | |
536 | info = &ctx->cur_samplerate; | |
537 | break; | |
538 | } | |
539 | ||
540 | return info; | |
541 | } | |
542 | ||
543 | static int hw_dev_status_get(int dev_index) | |
544 | { | |
545 | struct sr_dev_inst *sdi; | |
546 | ||
547 | sdi = sr_dev_inst_get(dev_insts, dev_index); | |
548 | if (sdi) | |
549 | return sdi->status; | |
550 | else | |
551 | return SR_ST_NOT_FOUND; | |
552 | } | |
553 | ||
554 | static int *hw_hwcap_get_all(void) | |
555 | { | |
556 | return hwcaps; | |
557 | } | |
558 | ||
559 | static uint8_t new_firmware_divider_value(uint64_t samplerate) | |
560 | { | |
561 | switch (samplerate) { | |
562 | case SR_MHZ(24): | |
563 | return 0xe0; | |
564 | break; | |
565 | case SR_MHZ(16): | |
566 | return 0xd5; | |
567 | break; | |
568 | case SR_MHZ(12): | |
569 | return 0xe2; | |
570 | break; | |
571 | case SR_MHZ(8): | |
572 | return 0xd4; | |
573 | break; | |
574 | case SR_MHZ(4): | |
575 | return 0xda; | |
576 | break; | |
577 | case SR_MHZ(2): | |
578 | return 0xe6; | |
579 | break; | |
580 | case SR_MHZ(1): | |
581 | return 0x8e; | |
582 | break; | |
583 | case SR_KHZ(500): | |
584 | return 0xfe; | |
585 | break; | |
586 | case SR_KHZ(250): | |
587 | return 0x9e; | |
588 | break; | |
589 | case SR_KHZ(200): | |
590 | return 0x4e; | |
591 | break; | |
592 | } | |
593 | ||
594 | /* Shouldn't happen. */ | |
595 | sr_err("logic: %s: Invalid samplerate %" PRIu64 "", | |
596 | __func__, samplerate); | |
597 | return 0; | |
598 | } | |
599 | ||
600 | static int set_samplerate(struct sr_dev_inst *sdi, uint64_t samplerate) | |
601 | { | |
602 | struct context *ctx; | |
603 | uint8_t divider; | |
604 | int ret, result, i; | |
605 | unsigned char buf[2]; | |
606 | ||
607 | ctx = sdi->priv; | |
608 | for (i = 0; supported_samplerates[i]; i++) { | |
609 | if (supported_samplerates[i] == samplerate) | |
610 | break; | |
611 | } | |
612 | if (supported_samplerates[i] == 0) | |
613 | return SR_ERR_SAMPLERATE; | |
614 | ||
615 | if (new_saleae_logic_firmware) | |
616 | divider = new_firmware_divider_value(samplerate); | |
617 | else | |
618 | divider = (uint8_t) (48 / (samplerate / 1000000.0)) - 1; | |
619 | ||
620 | sr_info("logic: setting samplerate to %" PRIu64 " Hz (divider %d)", | |
621 | samplerate, divider); | |
622 | ||
623 | buf[0] = (new_saleae_logic_firmware) ? 0xd5 : 0x01; | |
624 | buf[1] = divider; | |
625 | ret = libusb_bulk_transfer(ctx->usb->devhdl, 1 | LIBUSB_ENDPOINT_OUT, | |
626 | buf, 2, &result, 500); | |
627 | if (ret != 0) { | |
628 | sr_err("logic: failed to set samplerate: %d", ret); | |
629 | return SR_ERR; | |
630 | } | |
631 | ctx->cur_samplerate = samplerate; | |
632 | ||
633 | return SR_OK; | |
634 | } | |
635 | ||
636 | static int hw_dev_config_set(int dev_index, int hwcap, void *value) | |
637 | { | |
638 | struct sr_dev_inst *sdi; | |
639 | struct context *ctx; | |
640 | int ret; | |
641 | ||
642 | if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) | |
643 | return SR_ERR; | |
644 | ctx = sdi->priv; | |
645 | ||
646 | if (hwcap == SR_HWCAP_SAMPLERATE) { | |
647 | ret = set_samplerate(sdi, *(uint64_t *)value); | |
648 | } else if (hwcap == SR_HWCAP_PROBECONFIG) { | |
649 | ret = configure_probes(ctx, (GSList *) value); | |
650 | } else if (hwcap == SR_HWCAP_LIMIT_SAMPLES) { | |
651 | ctx->limit_samples = *(uint64_t *)value; | |
652 | ret = SR_OK; | |
653 | } else { | |
654 | ret = SR_ERR; | |
655 | } | |
656 | ||
657 | return ret; | |
658 | } | |
659 | ||
660 | static int receive_data(int fd, int revents, void *user_data) | |
661 | { | |
662 | struct timeval tv; | |
663 | ||
664 | /* Avoid compiler warnings. */ | |
665 | (void)fd; | |
666 | (void)revents; | |
667 | (void)user_data; | |
668 | ||
669 | tv.tv_sec = tv.tv_usec = 0; | |
670 | libusb_handle_events_timeout(usb_context, &tv); | |
671 | ||
672 | return TRUE; | |
673 | } | |
674 | ||
675 | static void receive_transfer(struct libusb_transfer *transfer) | |
676 | { | |
677 | /* TODO: These statics have to move to the ctx struct. */ | |
678 | static int num_samples = 0; | |
679 | static int empty_transfer_count = 0; | |
680 | struct sr_datafeed_packet packet; | |
681 | struct sr_datafeed_logic logic; | |
682 | struct context *ctx; | |
683 | int cur_buflen, trigger_offset, i; | |
684 | unsigned char *cur_buf, *new_buf; | |
685 | ||
686 | /* hw_dev_acquisition_stop() is telling us to stop. */ | |
687 | if (transfer == NULL) | |
688 | num_samples = -1; | |
689 | ||
690 | /* | |
691 | * If acquisition has already ended, just free any queued up | |
692 | * transfer that come in. | |
693 | */ | |
694 | if (num_samples == -1) { | |
695 | if (transfer) | |
696 | libusb_free_transfer(transfer); | |
697 | return; | |
698 | } | |
699 | ||
700 | sr_info("logic: receive_transfer(): status %d received %d bytes", | |
701 | transfer->status, transfer->actual_length); | |
702 | ||
703 | /* Save incoming transfer before reusing the transfer struct. */ | |
704 | cur_buf = transfer->buffer; | |
705 | cur_buflen = transfer->actual_length; | |
706 | ctx = transfer->user_data; | |
707 | ||
708 | /* Fire off a new request. */ | |
709 | if (!(new_buf = g_try_malloc(4096))) { | |
710 | sr_err("logic: %s: new_buf malloc failed", __func__); | |
711 | return; /* TODO: SR_ERR_MALLOC */ | |
712 | } | |
713 | ||
714 | transfer->buffer = new_buf; | |
715 | transfer->length = 4096; | |
716 | if (libusb_submit_transfer(transfer) != 0) { | |
717 | /* TODO: Stop session? */ | |
718 | /* TODO: Better error message. */ | |
719 | sr_err("logic: %s: libusb_submit_transfer error", __func__); | |
720 | } | |
721 | ||
722 | if (cur_buflen == 0) { | |
723 | empty_transfer_count++; | |
724 | if (empty_transfer_count > MAX_EMPTY_TRANSFERS) { | |
725 | /* | |
726 | * The FX2 gave up. End the acquisition, the frontend | |
727 | * will work out that the samplecount is short. | |
728 | */ | |
729 | hw_dev_acquisition_stop(-1, ctx->session_data); | |
730 | } | |
731 | return; | |
732 | } else { | |
733 | empty_transfer_count = 0; | |
734 | } | |
735 | ||
736 | trigger_offset = 0; | |
737 | if (ctx->trigger_stage >= 0) { | |
738 | for (i = 0; i < cur_buflen; i++) { | |
739 | ||
740 | if ((cur_buf[i] & ctx->trigger_mask[ctx->trigger_stage]) == ctx->trigger_value[ctx->trigger_stage]) { | |
741 | /* Match on this trigger stage. */ | |
742 | ctx->trigger_buffer[ctx->trigger_stage] = cur_buf[i]; | |
743 | ctx->trigger_stage++; | |
744 | ||
745 | if (ctx->trigger_stage == NUM_TRIGGER_STAGES || ctx->trigger_mask[ctx->trigger_stage] == 0) { | |
746 | /* Match on all trigger stages, we're done. */ | |
747 | trigger_offset = i + 1; | |
748 | ||
749 | /* | |
750 | * TODO: Send pre-trigger buffer to session bus. | |
751 | * Tell the frontend we hit the trigger here. | |
752 | */ | |
753 | packet.type = SR_DF_TRIGGER; | |
754 | packet.payload = NULL; | |
755 | sr_session_bus(ctx->session_data, &packet); | |
756 | ||
757 | /* | |
758 | * Send the samples that triggered it, since we're | |
759 | * skipping past them. | |
760 | */ | |
761 | packet.type = SR_DF_LOGIC; | |
762 | packet.payload = &logic; | |
763 | logic.length = ctx->trigger_stage; | |
764 | logic.unitsize = 1; | |
765 | logic.data = ctx->trigger_buffer; | |
766 | sr_session_bus(ctx->session_data, &packet); | |
767 | ||
768 | ctx->trigger_stage = TRIGGER_FIRED; | |
769 | break; | |
770 | } | |
771 | return; | |
772 | } | |
773 | ||
774 | /* | |
775 | * We had a match before, but not in the next sample. However, we may | |
776 | * have a match on this stage in the next bit -- trigger on 0001 will | |
777 | * fail on seeing 00001, so we need to go back to stage 0 -- but at | |
778 | * the next sample from the one that matched originally, which the | |
779 | * counter increment at the end of the loop takes care of. | |
780 | */ | |
781 | if (ctx->trigger_stage > 0) { | |
782 | i -= ctx->trigger_stage; | |
783 | if (i < -1) | |
784 | i = -1; /* Oops, went back past this buffer. */ | |
785 | /* Reset trigger stage. */ | |
786 | ctx->trigger_stage = 0; | |
787 | } | |
788 | } | |
789 | } | |
790 | ||
791 | if (ctx->trigger_stage == TRIGGER_FIRED) { | |
792 | /* Send the incoming transfer to the session bus. */ | |
793 | packet.type = SR_DF_LOGIC; | |
794 | packet.payload = &logic; | |
795 | logic.length = cur_buflen - trigger_offset; | |
796 | logic.unitsize = 1; | |
797 | logic.data = cur_buf + trigger_offset; | |
798 | sr_session_bus(ctx->session_data, &packet); | |
799 | g_free(cur_buf); | |
800 | ||
801 | num_samples += cur_buflen; | |
802 | if (ctx->limit_samples && (unsigned int) num_samples > ctx->limit_samples) { | |
803 | hw_dev_acquisition_stop(-1, ctx->session_data); | |
804 | } | |
805 | } else { | |
806 | /* | |
807 | * TODO: Buffer pre-trigger data in capture | |
808 | * ratio-sized buffer. | |
809 | */ | |
810 | } | |
811 | } | |
812 | ||
813 | static int hw_dev_acquisition_start(int dev_index, gpointer session_data) | |
814 | { | |
815 | struct sr_dev_inst *sdi; | |
816 | struct sr_datafeed_packet *packet; | |
817 | struct sr_datafeed_header *header; | |
818 | struct context *ctx; | |
819 | struct libusb_transfer *transfer; | |
820 | const struct libusb_pollfd **lupfd; | |
821 | int size, i; | |
822 | unsigned char *buf; | |
823 | ||
824 | if (!(sdi = sr_dev_inst_get(dev_insts, dev_index))) | |
825 | return SR_ERR; | |
826 | ctx = sdi->priv; | |
827 | ctx->session_data = session_data; | |
828 | ||
829 | if (!(packet = g_try_malloc(sizeof(struct sr_datafeed_packet)))) { | |
830 | sr_err("logic: %s: packet malloc failed", __func__); | |
831 | return SR_ERR_MALLOC; | |
832 | } | |
833 | ||
834 | if (!(header = g_try_malloc(sizeof(struct sr_datafeed_header)))) { | |
835 | sr_err("logic: %s: header malloc failed", __func__); | |
836 | return SR_ERR_MALLOC; | |
837 | } | |
838 | ||
839 | /* Start with 2K transfer, subsequently increased to 4K. */ | |
840 | size = 2048; | |
841 | for (i = 0; i < NUM_SIMUL_TRANSFERS; i++) { | |
842 | if (!(buf = g_try_malloc(size))) { | |
843 | sr_err("logic: %s: buf malloc failed", __func__); | |
844 | return SR_ERR_MALLOC; | |
845 | } | |
846 | transfer = libusb_alloc_transfer(0); | |
847 | libusb_fill_bulk_transfer(transfer, ctx->usb->devhdl, | |
848 | 2 | LIBUSB_ENDPOINT_IN, buf, size, | |
849 | receive_transfer, ctx, 40); | |
850 | if (libusb_submit_transfer(transfer) != 0) { | |
851 | /* TODO: Free them all. */ | |
852 | libusb_free_transfer(transfer); | |
853 | g_free(buf); | |
854 | return SR_ERR; | |
855 | } | |
856 | size = 4096; | |
857 | } | |
858 | ||
859 | lupfd = libusb_get_pollfds(usb_context); | |
860 | for (i = 0; lupfd[i]; i++) | |
861 | sr_source_add(lupfd[i]->fd, lupfd[i]->events, 40, receive_data, | |
862 | NULL); | |
863 | free(lupfd); /* NOT g_free()! */ | |
864 | ||
865 | packet->type = SR_DF_HEADER; | |
866 | packet->payload = header; | |
867 | header->feed_version = 1; | |
868 | gettimeofday(&header->starttime, NULL); | |
869 | header->samplerate = ctx->cur_samplerate; | |
870 | header->num_logic_probes = ctx->profile->num_probes; | |
871 | sr_session_bus(session_data, packet); | |
872 | g_free(header); | |
873 | g_free(packet); | |
874 | ||
875 | return SR_OK; | |
876 | } | |
877 | ||
878 | /* This stops acquisition on ALL devices, ignoring dev_index. */ | |
879 | static int hw_dev_acquisition_stop(int dev_index, gpointer session_data) | |
880 | { | |
881 | struct sr_datafeed_packet packet; | |
882 | ||
883 | /* Avoid compiler warnings. */ | |
884 | (void)dev_index; | |
885 | ||
886 | packet.type = SR_DF_END; | |
887 | sr_session_bus(session_data, &packet); | |
888 | ||
889 | receive_transfer(NULL); | |
890 | ||
891 | /* TODO: Need to cancel and free any queued up transfers. */ | |
892 | ||
893 | return SR_OK; | |
894 | } | |
895 | ||
896 | SR_PRIV struct sr_dev_plugin saleae_logic_plugin_info = { | |
897 | .name = "saleae-logic", | |
898 | .longname = "Saleae Logic", | |
899 | .api_version = 1, | |
900 | .init = hw_init, | |
901 | .cleanup = hw_cleanup, | |
902 | .dev_open = hw_dev_open, | |
903 | .dev_close = hw_dev_close, | |
904 | .dev_info_get = hw_dev_info_get, | |
905 | .dev_status_get = hw_dev_status_get, | |
906 | .hwcap_get_all = hw_hwcap_get_all, | |
907 | .dev_config_set = hw_dev_config_set, | |
908 | .dev_acquisition_start = hw_dev_acquisition_start, | |
909 | .dev_acquisition_stop = hw_dev_acquisition_stop, | |
910 | }; |