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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 | * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk> | |
6 | * | |
7 | * This program is free software: you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation, either version 3 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
19 | */ | |
20 | ||
21 | #include <stdio.h> | |
22 | #include <stdlib.h> | |
23 | #include <string.h> | |
24 | #include <inttypes.h> | |
25 | #include <libusb.h> | |
26 | #include "libsigrok.h" | |
27 | #include "libsigrok-internal.h" | |
28 | #include "fx2lafw.h" | |
29 | #include "command.h" | |
30 | ||
31 | static const struct fx2lafw_profile supported_fx2[] = { | |
32 | /* | |
33 | * CWAV USBee AX | |
34 | * EE Electronics ESLA201A | |
35 | * ARMFLY AX-Pro | |
36 | */ | |
37 | { 0x08a9, 0x0014, "CWAV", "USBee AX", NULL, | |
38 | FIRMWARE_DIR "/fx2lafw-cwav-usbeeax.fw", | |
39 | 0 }, | |
40 | /* | |
41 | * CWAV USBee DX | |
42 | * XZL-Studio DX | |
43 | */ | |
44 | { 0x08a9, 0x0015, "CWAV", "USBee DX", NULL, | |
45 | FIRMWARE_DIR "/fx2lafw-cwav-usbeedx.fw", | |
46 | DEV_CAPS_16BIT }, | |
47 | ||
48 | /* | |
49 | * CWAV USBee SX | |
50 | */ | |
51 | { 0x08a9, 0x0009, "CWAV", "USBee SX", NULL, | |
52 | FIRMWARE_DIR "/fx2lafw-cwav-usbeesx.fw", | |
53 | 0 }, | |
54 | ||
55 | /* | |
56 | * Saleae Logic | |
57 | * EE Electronics ESLA100 | |
58 | * Robomotic MiniLogic | |
59 | * Robomotic BugLogic 3 | |
60 | */ | |
61 | { 0x0925, 0x3881, "Saleae", "Logic", NULL, | |
62 | FIRMWARE_DIR "/fx2lafw-saleae-logic.fw", | |
63 | 0 }, | |
64 | ||
65 | /* | |
66 | * Default Cypress FX2 without EEPROM, e.g.: | |
67 | * Lcsoft Mini Board | |
68 | * Braintechnology USB Interface V2.x | |
69 | */ | |
70 | { 0x04B4, 0x8613, "Cypress", "FX2", NULL, | |
71 | FIRMWARE_DIR "/fx2lafw-cypress-fx2.fw", | |
72 | DEV_CAPS_16BIT }, | |
73 | ||
74 | /* | |
75 | * Braintechnology USB-LPS | |
76 | */ | |
77 | { 0x16d0, 0x0498, "Braintechnology", "USB-LPS", NULL, | |
78 | FIRMWARE_DIR "/fx2lafw-braintechnology-usb-lps.fw", | |
79 | DEV_CAPS_16BIT }, | |
80 | ||
81 | { 0, 0, 0, 0, 0, 0, 0 } | |
82 | }; | |
83 | ||
84 | static const int hwcaps[] = { | |
85 | SR_CONF_LOGIC_ANALYZER, | |
86 | SR_CONF_SAMPLERATE, | |
87 | ||
88 | /* These are really implemented in the driver, not the hardware. */ | |
89 | SR_CONF_LIMIT_SAMPLES, | |
90 | SR_CONF_CONTINUOUS, | |
91 | 0, | |
92 | }; | |
93 | ||
94 | static const char *probe_names[] = { | |
95 | "0", "1", "2", "3", "4", "5", "6", "7", | |
96 | "8", "9", "10", "11", "12", "13", "14", "15", | |
97 | NULL, | |
98 | }; | |
99 | ||
100 | static const uint64_t supported_samplerates[] = { | |
101 | SR_KHZ(20), | |
102 | SR_KHZ(25), | |
103 | SR_KHZ(50), | |
104 | SR_KHZ(100), | |
105 | SR_KHZ(200), | |
106 | SR_KHZ(250), | |
107 | SR_KHZ(500), | |
108 | SR_MHZ(1), | |
109 | SR_MHZ(2), | |
110 | SR_MHZ(3), | |
111 | SR_MHZ(4), | |
112 | SR_MHZ(6), | |
113 | SR_MHZ(8), | |
114 | SR_MHZ(12), | |
115 | SR_MHZ(16), | |
116 | SR_MHZ(24), | |
117 | 0, | |
118 | }; | |
119 | ||
120 | static const struct sr_samplerates samplerates = { | |
121 | 0, | |
122 | 0, | |
123 | 0, | |
124 | supported_samplerates, | |
125 | }; | |
126 | ||
127 | SR_PRIV struct sr_dev_driver fx2lafw_driver_info; | |
128 | static struct sr_dev_driver *di = &fx2lafw_driver_info; | |
129 | static int hw_dev_close(struct sr_dev_inst *sdi); | |
130 | static int config_set(int id, const void *value, const struct sr_dev_inst *sdi); | |
131 | static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data); | |
132 | ||
133 | /** | |
134 | * Check the USB configuration to determine if this is an fx2lafw device. | |
135 | * | |
136 | * @return TRUE if the device's configuration profile match fx2lafw | |
137 | * configuration, FALSE otherwise. | |
138 | */ | |
139 | static gboolean check_conf_profile(libusb_device *dev) | |
140 | { | |
141 | struct libusb_device_descriptor des; | |
142 | struct libusb_device_handle *hdl; | |
143 | gboolean ret; | |
144 | unsigned char strdesc[64]; | |
145 | ||
146 | hdl = NULL; | |
147 | ret = FALSE; | |
148 | while (!ret) { | |
149 | /* Assume the FW has not been loaded, unless proven wrong. */ | |
150 | if (libusb_get_device_descriptor(dev, &des) != 0) | |
151 | break; | |
152 | ||
153 | if (libusb_open(dev, &hdl) != 0) | |
154 | break; | |
155 | ||
156 | if (libusb_get_string_descriptor_ascii(hdl, | |
157 | des.iManufacturer, strdesc, sizeof(strdesc)) < 0) | |
158 | break; | |
159 | if (strncmp((const char *)strdesc, "sigrok", 6)) | |
160 | break; | |
161 | ||
162 | if (libusb_get_string_descriptor_ascii(hdl, | |
163 | des.iProduct, strdesc, sizeof(strdesc)) < 0) | |
164 | break; | |
165 | if (strncmp((const char *)strdesc, "fx2lafw", 7)) | |
166 | break; | |
167 | ||
168 | /* If we made it here, it must be an fx2lafw. */ | |
169 | ret = TRUE; | |
170 | } | |
171 | if (hdl) | |
172 | libusb_close(hdl); | |
173 | ||
174 | return ret; | |
175 | } | |
176 | ||
177 | static int fx2lafw_dev_open(struct sr_dev_inst *sdi) | |
178 | { | |
179 | libusb_device **devlist; | |
180 | struct libusb_device_descriptor des; | |
181 | struct dev_context *devc; | |
182 | struct drv_context *drvc; | |
183 | struct version_info vi; | |
184 | int ret, skip, i, device_count; | |
185 | uint8_t revid; | |
186 | ||
187 | drvc = di->priv; | |
188 | devc = sdi->priv; | |
189 | ||
190 | if (sdi->status == SR_ST_ACTIVE) | |
191 | /* Device is already in use. */ | |
192 | return SR_ERR; | |
193 | ||
194 | skip = 0; | |
195 | device_count = libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist); | |
196 | if (device_count < 0) { | |
197 | sr_err("Failed to get device list: %s.", | |
198 | libusb_error_name(device_count)); | |
199 | return SR_ERR; | |
200 | } | |
201 | ||
202 | for (i = 0; i < device_count; i++) { | |
203 | if ((ret = libusb_get_device_descriptor(devlist[i], &des))) { | |
204 | sr_err("Failed to get device descriptor: %s.", | |
205 | libusb_error_name(ret)); | |
206 | continue; | |
207 | } | |
208 | ||
209 | if (des.idVendor != devc->profile->vid | |
210 | || des.idProduct != devc->profile->pid) | |
211 | continue; | |
212 | ||
213 | if (sdi->status == SR_ST_INITIALIZING) { | |
214 | if (skip != sdi->index) { | |
215 | /* Skip devices of this type that aren't the one we want. */ | |
216 | skip += 1; | |
217 | continue; | |
218 | } | |
219 | } else if (sdi->status == SR_ST_INACTIVE) { | |
220 | /* | |
221 | * This device is fully enumerated, so we need to find | |
222 | * this device by vendor, product, bus and address. | |
223 | */ | |
224 | if (libusb_get_bus_number(devlist[i]) != devc->usb->bus | |
225 | || libusb_get_device_address(devlist[i]) != devc->usb->address) | |
226 | /* This is not the one. */ | |
227 | continue; | |
228 | } | |
229 | ||
230 | if (!(ret = libusb_open(devlist[i], &devc->usb->devhdl))) { | |
231 | if (devc->usb->address == 0xff) | |
232 | /* | |
233 | * First time we touch this device after FW | |
234 | * upload, so we don't know the address yet. | |
235 | */ | |
236 | devc->usb->address = libusb_get_device_address(devlist[i]); | |
237 | } else { | |
238 | sr_err("Failed to open device: %s.", | |
239 | libusb_error_name(ret)); | |
240 | break; | |
241 | } | |
242 | ||
243 | ret = command_get_fw_version(devc->usb->devhdl, &vi); | |
244 | if (ret != SR_OK) { | |
245 | sr_err("Failed to get firmware version."); | |
246 | break; | |
247 | } | |
248 | ||
249 | ret = command_get_revid_version(devc->usb->devhdl, &revid); | |
250 | if (ret != SR_OK) { | |
251 | sr_err("Failed to get REVID."); | |
252 | break; | |
253 | } | |
254 | ||
255 | /* | |
256 | * Changes in major version mean incompatible/API changes, so | |
257 | * bail out if we encounter an incompatible version. | |
258 | * Different minor versions are OK, they should be compatible. | |
259 | */ | |
260 | if (vi.major != FX2LAFW_REQUIRED_VERSION_MAJOR) { | |
261 | sr_err("Expected firmware version %d.x, " | |
262 | "got %d.%d.", FX2LAFW_REQUIRED_VERSION_MAJOR, | |
263 | vi.major, vi.minor); | |
264 | break; | |
265 | } | |
266 | ||
267 | sdi->status = SR_ST_ACTIVE; | |
268 | sr_info("Opened device %d on %d.%d, " | |
269 | "interface %d, firmware %d.%d.", | |
270 | sdi->index, devc->usb->bus, devc->usb->address, | |
271 | USB_INTERFACE, vi.major, vi.minor); | |
272 | ||
273 | sr_info("Detected REVID=%d, it's a Cypress CY7C68013%s.", | |
274 | revid, (revid != 1) ? " (FX2)" : "A (FX2LP)"); | |
275 | ||
276 | break; | |
277 | } | |
278 | libusb_free_device_list(devlist, 1); | |
279 | ||
280 | if (sdi->status != SR_ST_ACTIVE) | |
281 | return SR_ERR; | |
282 | ||
283 | return SR_OK; | |
284 | } | |
285 | ||
286 | static int configure_probes(const struct sr_dev_inst *sdi) | |
287 | { | |
288 | struct dev_context *devc; | |
289 | struct sr_probe *probe; | |
290 | GSList *l; | |
291 | int probe_bit, stage, i; | |
292 | char *tc; | |
293 | ||
294 | devc = sdi->priv; | |
295 | for (i = 0; i < NUM_TRIGGER_STAGES; i++) { | |
296 | devc->trigger_mask[i] = 0; | |
297 | devc->trigger_value[i] = 0; | |
298 | } | |
299 | ||
300 | stage = -1; | |
301 | for (l = sdi->probes; l; l = l->next) { | |
302 | probe = (struct sr_probe *)l->data; | |
303 | if (probe->enabled == FALSE) | |
304 | continue; | |
305 | ||
306 | if (probe->index > 7) | |
307 | devc->sample_wide = TRUE; | |
308 | ||
309 | probe_bit = 1 << (probe->index); | |
310 | if (!(probe->trigger)) | |
311 | continue; | |
312 | ||
313 | stage = 0; | |
314 | for (tc = probe->trigger; *tc; tc++) { | |
315 | devc->trigger_mask[stage] |= probe_bit; | |
316 | if (*tc == '1') | |
317 | devc->trigger_value[stage] |= probe_bit; | |
318 | stage++; | |
319 | if (stage > NUM_TRIGGER_STAGES) | |
320 | return SR_ERR; | |
321 | } | |
322 | } | |
323 | ||
324 | if (stage == -1) | |
325 | /* | |
326 | * We didn't configure any triggers, make sure acquisition | |
327 | * doesn't wait for any. | |
328 | */ | |
329 | devc->trigger_stage = TRIGGER_FIRED; | |
330 | else | |
331 | devc->trigger_stage = 0; | |
332 | ||
333 | return SR_OK; | |
334 | } | |
335 | ||
336 | static struct dev_context *fx2lafw_dev_new(void) | |
337 | { | |
338 | struct dev_context *devc; | |
339 | ||
340 | if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) { | |
341 | sr_err("Device context malloc failed."); | |
342 | return NULL; | |
343 | } | |
344 | ||
345 | devc->trigger_stage = TRIGGER_FIRED; | |
346 | ||
347 | return devc; | |
348 | } | |
349 | ||
350 | static int clear_instances(void) | |
351 | { | |
352 | GSList *l; | |
353 | struct sr_dev_inst *sdi; | |
354 | struct drv_context *drvc; | |
355 | struct dev_context *devc; | |
356 | int ret; | |
357 | ||
358 | drvc = di->priv; | |
359 | ret = SR_OK; | |
360 | for (l = drvc->instances; l; l = l->next) { | |
361 | if (!(sdi = l->data)) { | |
362 | /* Log error, but continue cleaning up the rest. */ | |
363 | sr_err("sdi was NULL, continuing."); | |
364 | ret = SR_ERR_BUG; | |
365 | continue; | |
366 | } | |
367 | if (!(devc = sdi->priv)) { | |
368 | /* Log error, but continue cleaning up the rest. */ | |
369 | sr_err("sdi->priv was NULL, continuing."); | |
370 | ret = SR_ERR_BUG; | |
371 | continue; | |
372 | } | |
373 | hw_dev_close(sdi); | |
374 | sr_usb_dev_inst_free(devc->usb); | |
375 | sdi = l->data; | |
376 | sr_dev_inst_free(sdi); | |
377 | } | |
378 | ||
379 | g_slist_free(drvc->instances); | |
380 | drvc->instances = NULL; | |
381 | ||
382 | return ret; | |
383 | } | |
384 | ||
385 | static int hw_init(struct sr_context *sr_ctx) | |
386 | { | |
387 | return std_hw_init(sr_ctx, di, DRIVER_LOG_DOMAIN); | |
388 | } | |
389 | ||
390 | static GSList *hw_scan(GSList *options) | |
391 | { | |
392 | GSList *devices; | |
393 | struct libusb_device_descriptor des; | |
394 | struct sr_dev_inst *sdi; | |
395 | const struct fx2lafw_profile *prof; | |
396 | struct drv_context *drvc; | |
397 | struct dev_context *devc; | |
398 | struct sr_probe *probe; | |
399 | libusb_device **devlist; | |
400 | int devcnt, num_logic_probes, ret, i, j; | |
401 | ||
402 | (void)options; | |
403 | ||
404 | drvc = di->priv; | |
405 | ||
406 | /* This scan always invalidates any previous scans. */ | |
407 | clear_instances(); | |
408 | ||
409 | /* Find all fx2lafw compatible devices and upload firmware to them. */ | |
410 | devices = NULL; | |
411 | libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist); | |
412 | for (i = 0; devlist[i]; i++) { | |
413 | ||
414 | if ((ret = libusb_get_device_descriptor( | |
415 | devlist[i], &des)) != 0) { | |
416 | sr_warn("Failed to get device descriptor: %s.", | |
417 | libusb_error_name(ret)); | |
418 | continue; | |
419 | } | |
420 | ||
421 | prof = NULL; | |
422 | for (j = 0; supported_fx2[j].vid; j++) { | |
423 | if (des.idVendor == supported_fx2[j].vid && | |
424 | des.idProduct == supported_fx2[j].pid) { | |
425 | prof = &supported_fx2[j]; | |
426 | } | |
427 | } | |
428 | ||
429 | /* Skip if the device was not found. */ | |
430 | if (!prof) | |
431 | continue; | |
432 | ||
433 | devcnt = g_slist_length(drvc->instances); | |
434 | sdi = sr_dev_inst_new(devcnt, SR_ST_INITIALIZING, | |
435 | prof->vendor, prof->model, prof->model_version); | |
436 | if (!sdi) | |
437 | return NULL; | |
438 | sdi->driver = di; | |
439 | ||
440 | /* Fill in probelist according to this device's profile. */ | |
441 | num_logic_probes = prof->dev_caps & DEV_CAPS_16BIT ? 16 : 8; | |
442 | for (j = 0; j < num_logic_probes; j++) { | |
443 | if (!(probe = sr_probe_new(j, SR_PROBE_LOGIC, TRUE, | |
444 | probe_names[j]))) | |
445 | return NULL; | |
446 | sdi->probes = g_slist_append(sdi->probes, probe); | |
447 | } | |
448 | ||
449 | devc = fx2lafw_dev_new(); | |
450 | devc->profile = prof; | |
451 | sdi->priv = devc; | |
452 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
453 | devices = g_slist_append(devices, sdi); | |
454 | ||
455 | if (check_conf_profile(devlist[i])) { | |
456 | /* Already has the firmware, so fix the new address. */ | |
457 | sr_dbg("Found an fx2lafw device."); | |
458 | sdi->status = SR_ST_INACTIVE; | |
459 | devc->usb = sr_usb_dev_inst_new | |
460 | (libusb_get_bus_number(devlist[i]), | |
461 | libusb_get_device_address(devlist[i]), NULL); | |
462 | } else { | |
463 | if (ezusb_upload_firmware(devlist[i], USB_CONFIGURATION, | |
464 | prof->firmware) == SR_OK) | |
465 | /* Store when this device's FW was updated. */ | |
466 | devc->fw_updated = g_get_monotonic_time(); | |
467 | else | |
468 | sr_err("Firmware upload failed for " | |
469 | "device %d.", devcnt); | |
470 | devc->usb = sr_usb_dev_inst_new | |
471 | (libusb_get_bus_number(devlist[i]), 0xff, NULL); | |
472 | } | |
473 | } | |
474 | libusb_free_device_list(devlist, 1); | |
475 | ||
476 | return devices; | |
477 | } | |
478 | ||
479 | static GSList *hw_dev_list(void) | |
480 | { | |
481 | struct drv_context *drvc; | |
482 | ||
483 | drvc = di->priv; | |
484 | ||
485 | return drvc->instances; | |
486 | } | |
487 | ||
488 | static int hw_dev_open(struct sr_dev_inst *sdi) | |
489 | { | |
490 | struct dev_context *devc; | |
491 | int ret; | |
492 | int64_t timediff_us, timediff_ms; | |
493 | ||
494 | devc = sdi->priv; | |
495 | ||
496 | /* | |
497 | * If the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS | |
498 | * milliseconds for the FX2 to renumerate. | |
499 | */ | |
500 | ret = SR_ERR; | |
501 | if (devc->fw_updated > 0) { | |
502 | sr_info("Waiting for device to reset."); | |
503 | /* Takes >= 300ms for the FX2 to be gone from the USB bus. */ | |
504 | g_usleep(300 * 1000); | |
505 | timediff_ms = 0; | |
506 | while (timediff_ms < MAX_RENUM_DELAY_MS) { | |
507 | if ((ret = fx2lafw_dev_open(sdi)) == SR_OK) | |
508 | break; | |
509 | g_usleep(100 * 1000); | |
510 | ||
511 | timediff_us = g_get_monotonic_time() - devc->fw_updated; | |
512 | timediff_ms = timediff_us / 1000; | |
513 | sr_spew("Waited %" PRIi64 "ms.", timediff_ms); | |
514 | } | |
515 | if (ret != SR_OK) { | |
516 | sr_err("Device failed to renumerate."); | |
517 | return SR_ERR; | |
518 | } | |
519 | sr_info("Device came back after %" PRIi64 "ms.", timediff_ms); | |
520 | } else { | |
521 | sr_info("Firmware upload was not needed."); | |
522 | ret = fx2lafw_dev_open(sdi); | |
523 | } | |
524 | ||
525 | if (ret != SR_OK) { | |
526 | sr_err("Unable to open device."); | |
527 | return SR_ERR; | |
528 | } | |
529 | ||
530 | devc = sdi->priv; | |
531 | ||
532 | ret = libusb_claim_interface(devc->usb->devhdl, USB_INTERFACE); | |
533 | if (ret != 0) { | |
534 | switch(ret) { | |
535 | case LIBUSB_ERROR_BUSY: | |
536 | sr_err("Unable to claim USB interface. Another " | |
537 | "program or driver has already claimed it."); | |
538 | break; | |
539 | case LIBUSB_ERROR_NO_DEVICE: | |
540 | sr_err("Device has been disconnected."); | |
541 | break; | |
542 | default: | |
543 | sr_err("Unable to claim interface: %s.", | |
544 | libusb_error_name(ret)); | |
545 | break; | |
546 | } | |
547 | ||
548 | return SR_ERR; | |
549 | } | |
550 | ||
551 | if (devc->cur_samplerate == 0) { | |
552 | /* Samplerate hasn't been set; default to the slowest one. */ | |
553 | if (config_set(SR_CONF_SAMPLERATE, &supported_samplerates[0], | |
554 | sdi) == SR_ERR) | |
555 | return SR_ERR; | |
556 | } | |
557 | ||
558 | return SR_OK; | |
559 | } | |
560 | ||
561 | static int hw_dev_close(struct sr_dev_inst *sdi) | |
562 | { | |
563 | struct dev_context *devc; | |
564 | ||
565 | devc = sdi->priv; | |
566 | if (devc->usb->devhdl == NULL) | |
567 | return SR_ERR; | |
568 | ||
569 | sr_info("Closing device %d on %d.%d, interface %d.", | |
570 | sdi->index, devc->usb->bus, devc->usb->address, USB_INTERFACE); | |
571 | libusb_release_interface(devc->usb->devhdl, USB_INTERFACE); | |
572 | libusb_close(devc->usb->devhdl); | |
573 | devc->usb->devhdl = NULL; | |
574 | sdi->status = SR_ST_INACTIVE; | |
575 | ||
576 | return SR_OK; | |
577 | } | |
578 | ||
579 | static int hw_cleanup(void) | |
580 | { | |
581 | struct drv_context *drvc; | |
582 | int ret; | |
583 | ||
584 | if (!(drvc = di->priv)) | |
585 | return SR_OK; | |
586 | ||
587 | ret = clear_instances(); | |
588 | ||
589 | g_free(drvc); | |
590 | di->priv = NULL; | |
591 | ||
592 | return ret; | |
593 | } | |
594 | ||
595 | static int config_get(int id, const void **data, const struct sr_dev_inst *sdi) | |
596 | { | |
597 | struct dev_context *devc; | |
598 | ||
599 | switch (id) { | |
600 | case SR_CONF_SAMPLERATE: | |
601 | if (sdi) { | |
602 | devc = sdi->priv; | |
603 | *data = &devc->cur_samplerate; | |
604 | } else | |
605 | return SR_ERR; | |
606 | break; | |
607 | default: | |
608 | return SR_ERR_ARG; | |
609 | } | |
610 | ||
611 | return SR_OK; | |
612 | } | |
613 | ||
614 | static int config_set(int id, const void *value, const struct sr_dev_inst *sdi) | |
615 | { | |
616 | struct dev_context *devc; | |
617 | int ret; | |
618 | ||
619 | devc = sdi->priv; | |
620 | ||
621 | if (id == SR_CONF_SAMPLERATE) { | |
622 | devc->cur_samplerate = *(const uint64_t *)value; | |
623 | ret = SR_OK; | |
624 | } else if (id == SR_CONF_LIMIT_SAMPLES) { | |
625 | devc->limit_samples = *(const uint64_t *)value; | |
626 | ret = SR_OK; | |
627 | } else { | |
628 | ret = SR_ERR; | |
629 | } | |
630 | ||
631 | return ret; | |
632 | } | |
633 | ||
634 | static int config_list(int key, const void **data, const struct sr_dev_inst *sdi) | |
635 | { | |
636 | ||
637 | (void)sdi; | |
638 | ||
639 | switch (key) { | |
640 | case SR_CONF_DEVICE_OPTIONS: | |
641 | *data = hwcaps; | |
642 | break; | |
643 | case SR_CONF_SAMPLERATE: | |
644 | *data = &samplerates; | |
645 | break; | |
646 | case SR_CONF_TRIGGER_TYPE: | |
647 | *data = TRIGGER_TYPE; | |
648 | break; | |
649 | default: | |
650 | return SR_ERR_ARG; | |
651 | } | |
652 | ||
653 | return SR_OK; | |
654 | } | |
655 | ||
656 | static int receive_data(int fd, int revents, void *cb_data) | |
657 | { | |
658 | struct timeval tv; | |
659 | struct drv_context *drvc; | |
660 | ||
661 | (void)fd; | |
662 | (void)revents; | |
663 | (void)cb_data; | |
664 | ||
665 | drvc = di->priv; | |
666 | ||
667 | tv.tv_sec = tv.tv_usec = 0; | |
668 | libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv); | |
669 | ||
670 | return TRUE; | |
671 | } | |
672 | ||
673 | static void abort_acquisition(struct dev_context *devc) | |
674 | { | |
675 | int i; | |
676 | ||
677 | devc->num_samples = -1; | |
678 | ||
679 | for (i = devc->num_transfers - 1; i >= 0; i--) { | |
680 | if (devc->transfers[i]) | |
681 | libusb_cancel_transfer(devc->transfers[i]); | |
682 | } | |
683 | } | |
684 | ||
685 | static void finish_acquisition(struct dev_context *devc) | |
686 | { | |
687 | struct sr_datafeed_packet packet; | |
688 | struct drv_context *drvc = di->priv; | |
689 | const struct libusb_pollfd **lupfd; | |
690 | int i; | |
691 | ||
692 | /* Terminate session. */ | |
693 | packet.type = SR_DF_END; | |
694 | sr_session_send(devc->session_dev_id, &packet); | |
695 | ||
696 | /* Remove fds from polling. */ | |
697 | lupfd = libusb_get_pollfds(drvc->sr_ctx->libusb_ctx); | |
698 | for (i = 0; lupfd[i]; i++) | |
699 | sr_source_remove(lupfd[i]->fd); | |
700 | free(lupfd); /* NOT g_free()! */ | |
701 | ||
702 | devc->num_transfers = 0; | |
703 | g_free(devc->transfers); | |
704 | } | |
705 | ||
706 | static void free_transfer(struct libusb_transfer *transfer) | |
707 | { | |
708 | struct dev_context *devc; | |
709 | unsigned int i; | |
710 | ||
711 | devc = transfer->user_data; | |
712 | ||
713 | g_free(transfer->buffer); | |
714 | transfer->buffer = NULL; | |
715 | libusb_free_transfer(transfer); | |
716 | ||
717 | for (i = 0; i < devc->num_transfers; i++) { | |
718 | if (devc->transfers[i] == transfer) { | |
719 | devc->transfers[i] = NULL; | |
720 | break; | |
721 | } | |
722 | } | |
723 | ||
724 | devc->submitted_transfers--; | |
725 | if (devc->submitted_transfers == 0) | |
726 | finish_acquisition(devc); | |
727 | } | |
728 | ||
729 | static void resubmit_transfer(struct libusb_transfer *transfer) | |
730 | { | |
731 | int ret; | |
732 | ||
733 | if ((ret = libusb_submit_transfer(transfer)) == LIBUSB_SUCCESS) | |
734 | return; | |
735 | ||
736 | free_transfer(transfer); | |
737 | /* TODO: Stop session? */ | |
738 | ||
739 | sr_err("%s: %s", __func__, libusb_error_name(ret)); | |
740 | } | |
741 | ||
742 | static void receive_transfer(struct libusb_transfer *transfer) | |
743 | { | |
744 | gboolean packet_has_error = FALSE; | |
745 | struct sr_datafeed_packet packet; | |
746 | struct sr_datafeed_logic logic; | |
747 | struct dev_context *devc; | |
748 | int trigger_offset, i, sample_width, cur_sample_count; | |
749 | int trigger_offset_bytes; | |
750 | uint8_t *cur_buf; | |
751 | ||
752 | devc = transfer->user_data; | |
753 | ||
754 | /* | |
755 | * If acquisition has already ended, just free any queued up | |
756 | * transfer that come in. | |
757 | */ | |
758 | if (devc->num_samples == -1) { | |
759 | free_transfer(transfer); | |
760 | return; | |
761 | } | |
762 | ||
763 | sr_info("receive_transfer(): status %d received %d bytes.", | |
764 | transfer->status, transfer->actual_length); | |
765 | ||
766 | /* Save incoming transfer before reusing the transfer struct. */ | |
767 | cur_buf = transfer->buffer; | |
768 | sample_width = devc->sample_wide ? 2 : 1; | |
769 | cur_sample_count = transfer->actual_length / sample_width; | |
770 | ||
771 | switch (transfer->status) { | |
772 | case LIBUSB_TRANSFER_NO_DEVICE: | |
773 | abort_acquisition(devc); | |
774 | free_transfer(transfer); | |
775 | return; | |
776 | case LIBUSB_TRANSFER_COMPLETED: | |
777 | case LIBUSB_TRANSFER_TIMED_OUT: /* We may have received some data though. */ | |
778 | break; | |
779 | default: | |
780 | packet_has_error = TRUE; | |
781 | break; | |
782 | } | |
783 | ||
784 | if (transfer->actual_length == 0 || packet_has_error) { | |
785 | devc->empty_transfer_count++; | |
786 | if (devc->empty_transfer_count > MAX_EMPTY_TRANSFERS) { | |
787 | /* | |
788 | * The FX2 gave up. End the acquisition, the frontend | |
789 | * will work out that the samplecount is short. | |
790 | */ | |
791 | abort_acquisition(devc); | |
792 | free_transfer(transfer); | |
793 | } else { | |
794 | resubmit_transfer(transfer); | |
795 | } | |
796 | return; | |
797 | } else { | |
798 | devc->empty_transfer_count = 0; | |
799 | } | |
800 | ||
801 | trigger_offset = 0; | |
802 | if (devc->trigger_stage >= 0) { | |
803 | for (i = 0; i < cur_sample_count; i++) { | |
804 | ||
805 | const uint16_t cur_sample = devc->sample_wide ? | |
806 | *((const uint16_t*)cur_buf + i) : | |
807 | *((const uint8_t*)cur_buf + i); | |
808 | ||
809 | if ((cur_sample & devc->trigger_mask[devc->trigger_stage]) == | |
810 | devc->trigger_value[devc->trigger_stage]) { | |
811 | /* Match on this trigger stage. */ | |
812 | devc->trigger_buffer[devc->trigger_stage] = cur_sample; | |
813 | devc->trigger_stage++; | |
814 | ||
815 | if (devc->trigger_stage == NUM_TRIGGER_STAGES || | |
816 | devc->trigger_mask[devc->trigger_stage] == 0) { | |
817 | /* Match on all trigger stages, we're done. */ | |
818 | trigger_offset = i + 1; | |
819 | ||
820 | /* | |
821 | * TODO: Send pre-trigger buffer to session bus. | |
822 | * Tell the frontend we hit the trigger here. | |
823 | */ | |
824 | packet.type = SR_DF_TRIGGER; | |
825 | packet.payload = NULL; | |
826 | sr_session_send(devc->session_dev_id, &packet); | |
827 | ||
828 | /* | |
829 | * Send the samples that triggered it, | |
830 | * since we're skipping past them. | |
831 | */ | |
832 | packet.type = SR_DF_LOGIC; | |
833 | packet.payload = &logic; | |
834 | logic.unitsize = sizeof(*devc->trigger_buffer); | |
835 | logic.length = devc->trigger_stage * logic.unitsize; | |
836 | logic.data = devc->trigger_buffer; | |
837 | sr_session_send(devc->session_dev_id, &packet); | |
838 | ||
839 | devc->trigger_stage = TRIGGER_FIRED; | |
840 | break; | |
841 | } | |
842 | } else if (devc->trigger_stage > 0) { | |
843 | /* | |
844 | * We had a match before, but not in the next sample. However, we may | |
845 | * have a match on this stage in the next bit -- trigger on 0001 will | |
846 | * fail on seeing 00001, so we need to go back to stage 0 -- but at | |
847 | * the next sample from the one that matched originally, which the | |
848 | * counter increment at the end of the loop takes care of. | |
849 | */ | |
850 | i -= devc->trigger_stage; | |
851 | if (i < -1) | |
852 | i = -1; /* Oops, went back past this buffer. */ | |
853 | /* Reset trigger stage. */ | |
854 | devc->trigger_stage = 0; | |
855 | } | |
856 | } | |
857 | } | |
858 | ||
859 | if (devc->trigger_stage == TRIGGER_FIRED) { | |
860 | /* Send the incoming transfer to the session bus. */ | |
861 | trigger_offset_bytes = trigger_offset * sample_width; | |
862 | packet.type = SR_DF_LOGIC; | |
863 | packet.payload = &logic; | |
864 | logic.length = transfer->actual_length - trigger_offset_bytes; | |
865 | logic.unitsize = sample_width; | |
866 | logic.data = cur_buf + trigger_offset_bytes; | |
867 | sr_session_send(devc->session_dev_id, &packet); | |
868 | ||
869 | devc->num_samples += cur_sample_count; | |
870 | if (devc->limit_samples && | |
871 | (unsigned int)devc->num_samples > devc->limit_samples) { | |
872 | abort_acquisition(devc); | |
873 | free_transfer(transfer); | |
874 | return; | |
875 | } | |
876 | } else { | |
877 | /* | |
878 | * TODO: Buffer pre-trigger data in capture | |
879 | * ratio-sized buffer. | |
880 | */ | |
881 | } | |
882 | ||
883 | resubmit_transfer(transfer); | |
884 | } | |
885 | ||
886 | static unsigned int to_bytes_per_ms(unsigned int samplerate) | |
887 | { | |
888 | return samplerate / 1000; | |
889 | } | |
890 | ||
891 | static size_t get_buffer_size(struct dev_context *devc) | |
892 | { | |
893 | size_t s; | |
894 | ||
895 | /* | |
896 | * The buffer should be large enough to hold 10ms of data and | |
897 | * a multiple of 512. | |
898 | */ | |
899 | s = 10 * to_bytes_per_ms(devc->cur_samplerate); | |
900 | return (s + 511) & ~511; | |
901 | } | |
902 | ||
903 | static unsigned int get_number_of_transfers(struct dev_context *devc) | |
904 | { | |
905 | unsigned int n; | |
906 | ||
907 | /* Total buffer size should be able to hold about 500ms of data. */ | |
908 | n = 500 * to_bytes_per_ms(devc->cur_samplerate) / get_buffer_size(devc); | |
909 | ||
910 | if (n > NUM_SIMUL_TRANSFERS) | |
911 | return NUM_SIMUL_TRANSFERS; | |
912 | ||
913 | return n; | |
914 | } | |
915 | ||
916 | static unsigned int get_timeout(struct dev_context *devc) | |
917 | { | |
918 | size_t total_size; | |
919 | unsigned int timeout; | |
920 | ||
921 | total_size = get_buffer_size(devc) * get_number_of_transfers(devc); | |
922 | timeout = total_size / to_bytes_per_ms(devc->cur_samplerate); | |
923 | return timeout + timeout / 4; /* Leave a headroom of 25% percent. */ | |
924 | } | |
925 | ||
926 | static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi, | |
927 | void *cb_data) | |
928 | { | |
929 | struct sr_datafeed_packet packet; | |
930 | struct sr_datafeed_header header; | |
931 | struct dev_context *devc; | |
932 | struct drv_context *drvc; | |
933 | struct libusb_transfer *transfer; | |
934 | const struct libusb_pollfd **lupfd; | |
935 | unsigned int i, timeout, num_transfers; | |
936 | int ret; | |
937 | unsigned char *buf; | |
938 | size_t size; | |
939 | ||
940 | drvc = di->priv; | |
941 | devc = sdi->priv; | |
942 | ||
943 | if (devc->submitted_transfers != 0) | |
944 | return SR_ERR; | |
945 | ||
946 | if (configure_probes(sdi) != SR_OK) { | |
947 | sr_err("Failed to configure probes."); | |
948 | return SR_ERR; | |
949 | } | |
950 | ||
951 | devc->session_dev_id = cb_data; | |
952 | devc->num_samples = 0; | |
953 | devc->empty_transfer_count = 0; | |
954 | ||
955 | timeout = get_timeout(devc); | |
956 | num_transfers = get_number_of_transfers(devc); | |
957 | size = get_buffer_size(devc); | |
958 | ||
959 | devc->transfers = g_try_malloc0(sizeof(*devc->transfers) * num_transfers); | |
960 | if (!devc->transfers) { | |
961 | sr_err("USB transfers malloc failed."); | |
962 | return SR_ERR_MALLOC; | |
963 | } | |
964 | ||
965 | devc->num_transfers = num_transfers; | |
966 | ||
967 | for (i = 0; i < num_transfers; i++) { | |
968 | if (!(buf = g_try_malloc(size))) { | |
969 | sr_err("USB transfer buffer malloc failed."); | |
970 | return SR_ERR_MALLOC; | |
971 | } | |
972 | transfer = libusb_alloc_transfer(0); | |
973 | libusb_fill_bulk_transfer(transfer, devc->usb->devhdl, | |
974 | 2 | LIBUSB_ENDPOINT_IN, buf, size, | |
975 | receive_transfer, devc, timeout); | |
976 | if ((ret = libusb_submit_transfer(transfer)) != 0) { | |
977 | sr_err("Failed to submit transfer: %s.", | |
978 | libusb_error_name(ret)); | |
979 | libusb_free_transfer(transfer); | |
980 | g_free(buf); | |
981 | abort_acquisition(devc); | |
982 | return SR_ERR; | |
983 | } | |
984 | devc->transfers[i] = transfer; | |
985 | devc->submitted_transfers++; | |
986 | } | |
987 | ||
988 | lupfd = libusb_get_pollfds(drvc->sr_ctx->libusb_ctx); | |
989 | for (i = 0; lupfd[i]; i++) | |
990 | sr_source_add(lupfd[i]->fd, lupfd[i]->events, | |
991 | timeout, receive_data, NULL); | |
992 | free(lupfd); /* NOT g_free()! */ | |
993 | ||
994 | packet.type = SR_DF_HEADER; | |
995 | packet.payload = &header; | |
996 | header.feed_version = 1; | |
997 | gettimeofday(&header.starttime, NULL); | |
998 | sr_session_send(cb_data, &packet); | |
999 | ||
1000 | if ((ret = command_start_acquisition(devc->usb->devhdl, | |
1001 | devc->cur_samplerate, devc->sample_wide)) != SR_OK) { | |
1002 | abort_acquisition(devc); | |
1003 | return ret; | |
1004 | } | |
1005 | ||
1006 | return SR_OK; | |
1007 | } | |
1008 | ||
1009 | /* TODO: This stops acquisition on ALL devices, ignoring dev_index. */ | |
1010 | static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) | |
1011 | { | |
1012 | (void)cb_data; | |
1013 | ||
1014 | abort_acquisition(sdi->priv); | |
1015 | ||
1016 | return SR_OK; | |
1017 | } | |
1018 | ||
1019 | SR_PRIV struct sr_dev_driver fx2lafw_driver_info = { | |
1020 | .name = "fx2lafw", | |
1021 | .longname = "fx2lafw (generic driver for FX2 based LAs)", | |
1022 | .api_version = 1, | |
1023 | .init = hw_init, | |
1024 | .cleanup = hw_cleanup, | |
1025 | .scan = hw_scan, | |
1026 | .dev_list = hw_dev_list, | |
1027 | .dev_clear = clear_instances, | |
1028 | .config_get = config_get, | |
1029 | .config_set = config_set, | |
1030 | .config_list = config_list, | |
1031 | .dev_open = hw_dev_open, | |
1032 | .dev_close = hw_dev_close, | |
1033 | .dev_acquisition_start = hw_dev_acquisition_start, | |
1034 | .dev_acquisition_stop = hw_dev_acquisition_stop, | |
1035 | .priv = NULL, | |
1036 | }; |