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1 | /* | |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2013 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 "protocol.h" | |
22 | ||
23 | static const struct fx2lafw_profile supported_fx2[] = { | |
24 | /* | |
25 | * CWAV USBee AX | |
26 | * EE Electronics ESLA201A | |
27 | * ARMFLY AX-Pro | |
28 | */ | |
29 | { 0x08a9, 0x0014, "CWAV", "USBee AX", NULL, | |
30 | FIRMWARE_DIR "/fx2lafw-cwav-usbeeax.fw", | |
31 | 0, NULL, NULL}, | |
32 | /* | |
33 | * CWAV USBee DX | |
34 | * XZL-Studio DX | |
35 | */ | |
36 | { 0x08a9, 0x0015, "CWAV", "USBee DX", NULL, | |
37 | FIRMWARE_DIR "/fx2lafw-cwav-usbeedx.fw", | |
38 | DEV_CAPS_16BIT, NULL, NULL }, | |
39 | ||
40 | /* | |
41 | * CWAV USBee SX | |
42 | */ | |
43 | { 0x08a9, 0x0009, "CWAV", "USBee SX", NULL, | |
44 | FIRMWARE_DIR "/fx2lafw-cwav-usbeesx.fw", | |
45 | 0, NULL, NULL}, | |
46 | ||
47 | /* | |
48 | * Saleae Logic | |
49 | * EE Electronics ESLA100 | |
50 | * Robomotic MiniLogic | |
51 | * Robomotic BugLogic 3 | |
52 | */ | |
53 | { 0x0925, 0x3881, "Saleae", "Logic", NULL, | |
54 | FIRMWARE_DIR "/fx2lafw-saleae-logic.fw", | |
55 | 0, NULL, NULL}, | |
56 | ||
57 | /* | |
58 | * Default Cypress FX2 without EEPROM, e.g.: | |
59 | * Lcsoft Mini Board | |
60 | * Braintechnology USB Interface V2.x | |
61 | */ | |
62 | { 0x04B4, 0x8613, "Cypress", "FX2", NULL, | |
63 | FIRMWARE_DIR "/fx2lafw-cypress-fx2.fw", | |
64 | DEV_CAPS_16BIT, NULL, NULL }, | |
65 | ||
66 | /* | |
67 | * Braintechnology USB-LPS | |
68 | */ | |
69 | { 0x16d0, 0x0498, "Braintechnology", "USB-LPS", NULL, | |
70 | FIRMWARE_DIR "/fx2lafw-braintechnology-usb-lps.fw", | |
71 | DEV_CAPS_16BIT, NULL, NULL }, | |
72 | ||
73 | { 0, 0, 0, 0, 0, 0, 0, 0, 0 } | |
74 | }; | |
75 | ||
76 | static const uint32_t scanopts[] = { | |
77 | SR_CONF_CONN, | |
78 | }; | |
79 | ||
80 | static const uint32_t devopts[] = { | |
81 | SR_CONF_LOGIC_ANALYZER, | |
82 | SR_CONF_CONTINUOUS, | |
83 | SR_CONF_CONN | SR_CONF_GET, | |
84 | SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
85 | SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET, | |
86 | SR_CONF_TRIGGER_MATCH | SR_CONF_LIST, | |
87 | }; | |
88 | ||
89 | static const char *channel_names[] = { | |
90 | "0", "1", "2", "3", "4", "5", "6", "7", | |
91 | "8", "9", "10", "11", "12", "13", "14", "15", | |
92 | NULL, | |
93 | }; | |
94 | ||
95 | static const int32_t soft_trigger_matches[] = { | |
96 | SR_TRIGGER_ZERO, | |
97 | SR_TRIGGER_ONE, | |
98 | SR_TRIGGER_RISING, | |
99 | SR_TRIGGER_FALLING, | |
100 | SR_TRIGGER_EDGE, | |
101 | }; | |
102 | ||
103 | static const uint64_t samplerates[] = { | |
104 | SR_KHZ(20), | |
105 | SR_KHZ(25), | |
106 | SR_KHZ(50), | |
107 | SR_KHZ(100), | |
108 | SR_KHZ(200), | |
109 | SR_KHZ(250), | |
110 | SR_KHZ(500), | |
111 | SR_MHZ(1), | |
112 | SR_MHZ(2), | |
113 | SR_MHZ(3), | |
114 | SR_MHZ(4), | |
115 | SR_MHZ(6), | |
116 | SR_MHZ(8), | |
117 | SR_MHZ(12), | |
118 | SR_MHZ(16), | |
119 | SR_MHZ(24), | |
120 | }; | |
121 | ||
122 | SR_PRIV struct sr_dev_driver fx2lafw_driver_info; | |
123 | static struct sr_dev_driver *di = &fx2lafw_driver_info; | |
124 | ||
125 | static int init(struct sr_context *sr_ctx) | |
126 | { | |
127 | return std_init(sr_ctx, di, LOG_PREFIX); | |
128 | } | |
129 | ||
130 | static GSList *scan(GSList *options) | |
131 | { | |
132 | struct drv_context *drvc; | |
133 | struct dev_context *devc; | |
134 | struct sr_dev_inst *sdi; | |
135 | struct sr_usb_dev_inst *usb; | |
136 | struct sr_channel *ch; | |
137 | struct sr_config *src; | |
138 | const struct fx2lafw_profile *prof; | |
139 | GSList *l, *devices, *conn_devices; | |
140 | struct libusb_device_descriptor des; | |
141 | libusb_device **devlist; | |
142 | struct libusb_device_handle *hdl; | |
143 | int num_logic_channels, ret, i, j; | |
144 | const char *conn; | |
145 | char manufacturer[64], product[64], serial_num[64], connection_id[64]; | |
146 | ||
147 | drvc = di->priv; | |
148 | ||
149 | conn = NULL; | |
150 | for (l = options; l; l = l->next) { | |
151 | src = l->data; | |
152 | switch (src->key) { | |
153 | case SR_CONF_CONN: | |
154 | conn = g_variant_get_string(src->data, NULL); | |
155 | break; | |
156 | } | |
157 | } | |
158 | if (conn) | |
159 | conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn); | |
160 | else | |
161 | conn_devices = NULL; | |
162 | ||
163 | /* Find all fx2lafw compatible devices and upload firmware to them. */ | |
164 | devices = NULL; | |
165 | libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist); | |
166 | for (i = 0; devlist[i]; i++) { | |
167 | if (conn) { | |
168 | usb = NULL; | |
169 | for (l = conn_devices; l; l = l->next) { | |
170 | usb = l->data; | |
171 | if (usb->bus == libusb_get_bus_number(devlist[i]) | |
172 | && usb->address == libusb_get_device_address(devlist[i])) | |
173 | break; | |
174 | } | |
175 | if (!l) | |
176 | /* This device matched none of the ones that | |
177 | * matched the conn specification. */ | |
178 | continue; | |
179 | } | |
180 | ||
181 | if ((ret = libusb_get_device_descriptor( devlist[i], &des)) != 0) { | |
182 | sr_warn("Failed to get device descriptor: %s.", | |
183 | libusb_error_name(ret)); | |
184 | continue; | |
185 | } | |
186 | ||
187 | if ((ret = libusb_open(devlist[i], &hdl)) < 0) | |
188 | continue; | |
189 | ||
190 | if (des.iManufacturer == 0) { | |
191 | manufacturer[0] = '\0'; | |
192 | } else if ((ret = libusb_get_string_descriptor_ascii(hdl, | |
193 | des.iManufacturer, (unsigned char *) manufacturer, | |
194 | sizeof(manufacturer))) < 0) { | |
195 | sr_warn("Failed to get manufacturer string descriptor: %s.", | |
196 | libusb_error_name(ret)); | |
197 | continue; | |
198 | } | |
199 | ||
200 | if (des.iProduct == 0) { | |
201 | product[0] = '\0'; | |
202 | } else if ((ret = libusb_get_string_descriptor_ascii(hdl, | |
203 | des.iProduct, (unsigned char *) product, | |
204 | sizeof(product))) < 0) { | |
205 | sr_warn("Failed to get product string descriptor: %s.", | |
206 | libusb_error_name(ret)); | |
207 | continue; | |
208 | } | |
209 | ||
210 | if (des.iSerialNumber == 0) { | |
211 | serial_num[0] = '\0'; | |
212 | } else if ((ret = libusb_get_string_descriptor_ascii(hdl, | |
213 | des.iSerialNumber, (unsigned char *) serial_num, | |
214 | sizeof(serial_num))) < 0) { | |
215 | sr_warn("Failed to get serial number string descriptor: %s.", | |
216 | libusb_error_name(ret)); | |
217 | continue; | |
218 | } | |
219 | ||
220 | usb_get_port_path(devlist[i], connection_id, sizeof(connection_id)); | |
221 | ||
222 | libusb_close(hdl); | |
223 | ||
224 | prof = NULL; | |
225 | for (j = 0; supported_fx2[j].vid; j++) { | |
226 | if (des.idVendor == supported_fx2[j].vid && | |
227 | des.idProduct == supported_fx2[j].pid && | |
228 | (!supported_fx2[j].usb_manufacturer || | |
229 | !strcmp(manufacturer, supported_fx2[j].usb_manufacturer)) && | |
230 | (!supported_fx2[j].usb_manufacturer || | |
231 | !strcmp(product, supported_fx2[j].usb_product))) { | |
232 | prof = &supported_fx2[j]; | |
233 | break; | |
234 | } | |
235 | } | |
236 | ||
237 | /* Skip if the device was not found. */ | |
238 | if (!prof) | |
239 | continue; | |
240 | ||
241 | sdi = sr_dev_inst_new(SR_ST_INITIALIZING, | |
242 | prof->vendor, prof->model, prof->model_version); | |
243 | if (!sdi) | |
244 | return NULL; | |
245 | sdi->driver = di; | |
246 | sdi->serial_num = g_strdup(serial_num); | |
247 | sdi->connection_id = g_strdup(connection_id); | |
248 | ||
249 | /* Fill in channellist according to this device's profile. */ | |
250 | num_logic_channels = prof->dev_caps & DEV_CAPS_16BIT ? 16 : 8; | |
251 | for (j = 0; j < num_logic_channels; j++) { | |
252 | if (!(ch = sr_channel_new(j, SR_CHANNEL_LOGIC, TRUE, | |
253 | channel_names[j]))) | |
254 | return NULL; | |
255 | sdi->channels = g_slist_append(sdi->channels, ch); | |
256 | } | |
257 | ||
258 | devc = fx2lafw_dev_new(); | |
259 | devc->profile = prof; | |
260 | sdi->priv = devc; | |
261 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
262 | devices = g_slist_append(devices, sdi); | |
263 | ||
264 | if (fx2lafw_check_conf_profile(devlist[i])) { | |
265 | /* Already has the firmware, so fix the new address. */ | |
266 | sr_dbg("Found an fx2lafw device."); | |
267 | sdi->status = SR_ST_INACTIVE; | |
268 | sdi->inst_type = SR_INST_USB; | |
269 | sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]), | |
270 | libusb_get_device_address(devlist[i]), NULL); | |
271 | } else { | |
272 | if (ezusb_upload_firmware(devlist[i], USB_CONFIGURATION, | |
273 | prof->firmware) == SR_OK) | |
274 | /* Store when this device's FW was updated. */ | |
275 | devc->fw_updated = g_get_monotonic_time(); | |
276 | else | |
277 | sr_err("Firmware upload failed for " | |
278 | "device %d.%d (logical).", | |
279 | libusb_get_bus_number(devlist[i]), | |
280 | libusb_get_device_address(devlist[i])); | |
281 | sdi->inst_type = SR_INST_USB; | |
282 | sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]), | |
283 | 0xff, NULL); | |
284 | } | |
285 | } | |
286 | libusb_free_device_list(devlist, 1); | |
287 | g_slist_free_full(conn_devices, (GDestroyNotify)sr_usb_dev_inst_free); | |
288 | ||
289 | return devices; | |
290 | } | |
291 | ||
292 | static GSList *dev_list(void) | |
293 | { | |
294 | return ((struct drv_context *)(di->priv))->instances; | |
295 | } | |
296 | ||
297 | static int dev_open(struct sr_dev_inst *sdi) | |
298 | { | |
299 | struct sr_usb_dev_inst *usb; | |
300 | struct dev_context *devc; | |
301 | int ret; | |
302 | int64_t timediff_us, timediff_ms; | |
303 | ||
304 | devc = sdi->priv; | |
305 | usb = sdi->conn; | |
306 | ||
307 | /* | |
308 | * If the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS | |
309 | * milliseconds for the FX2 to renumerate. | |
310 | */ | |
311 | ret = SR_ERR; | |
312 | if (devc->fw_updated > 0) { | |
313 | sr_info("Waiting for device to reset."); | |
314 | /* Takes >= 300ms for the FX2 to be gone from the USB bus. */ | |
315 | g_usleep(300 * 1000); | |
316 | timediff_ms = 0; | |
317 | while (timediff_ms < MAX_RENUM_DELAY_MS) { | |
318 | if ((ret = fx2lafw_dev_open(sdi, di)) == SR_OK) | |
319 | break; | |
320 | g_usleep(100 * 1000); | |
321 | ||
322 | timediff_us = g_get_monotonic_time() - devc->fw_updated; | |
323 | timediff_ms = timediff_us / 1000; | |
324 | sr_spew("Waited %" PRIi64 "ms.", timediff_ms); | |
325 | } | |
326 | if (ret != SR_OK) { | |
327 | sr_err("Device failed to renumerate."); | |
328 | return SR_ERR; | |
329 | } | |
330 | sr_info("Device came back after %" PRIi64 "ms.", timediff_ms); | |
331 | } else { | |
332 | sr_info("Firmware upload was not needed."); | |
333 | ret = fx2lafw_dev_open(sdi, di); | |
334 | } | |
335 | ||
336 | if (ret != SR_OK) { | |
337 | sr_err("Unable to open device."); | |
338 | return SR_ERR; | |
339 | } | |
340 | ||
341 | ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE); | |
342 | if (ret != 0) { | |
343 | switch (ret) { | |
344 | case LIBUSB_ERROR_BUSY: | |
345 | sr_err("Unable to claim USB interface. Another " | |
346 | "program or driver has already claimed it."); | |
347 | break; | |
348 | case LIBUSB_ERROR_NO_DEVICE: | |
349 | sr_err("Device has been disconnected."); | |
350 | break; | |
351 | default: | |
352 | sr_err("Unable to claim interface: %s.", | |
353 | libusb_error_name(ret)); | |
354 | break; | |
355 | } | |
356 | ||
357 | return SR_ERR; | |
358 | } | |
359 | ||
360 | if (devc->cur_samplerate == 0) { | |
361 | /* Samplerate hasn't been set; default to the slowest one. */ | |
362 | devc->cur_samplerate = samplerates[0]; | |
363 | } | |
364 | ||
365 | return SR_OK; | |
366 | } | |
367 | ||
368 | static int dev_close(struct sr_dev_inst *sdi) | |
369 | { | |
370 | struct sr_usb_dev_inst *usb; | |
371 | ||
372 | usb = sdi->conn; | |
373 | if (usb->devhdl == NULL) | |
374 | return SR_ERR; | |
375 | ||
376 | sr_info("fx2lafw: Closing device on %d.%d (logical) / %s (physical) interface %d.", | |
377 | usb->bus, usb->address, sdi->connection_id, USB_INTERFACE); | |
378 | libusb_release_interface(usb->devhdl, USB_INTERFACE); | |
379 | libusb_close(usb->devhdl); | |
380 | usb->devhdl = NULL; | |
381 | sdi->status = SR_ST_INACTIVE; | |
382 | ||
383 | return SR_OK; | |
384 | } | |
385 | ||
386 | static int cleanup(void) | |
387 | { | |
388 | int ret; | |
389 | struct drv_context *drvc; | |
390 | ||
391 | if (!(drvc = di->priv)) | |
392 | return SR_OK; | |
393 | ||
394 | ret = std_dev_clear(di, NULL); | |
395 | ||
396 | g_free(drvc); | |
397 | di->priv = NULL; | |
398 | ||
399 | return ret; | |
400 | } | |
401 | ||
402 | static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, | |
403 | const struct sr_channel_group *cg) | |
404 | { | |
405 | struct dev_context *devc; | |
406 | struct sr_usb_dev_inst *usb; | |
407 | char str[128]; | |
408 | ||
409 | (void)cg; | |
410 | ||
411 | if (!sdi) | |
412 | return SR_ERR_ARG; | |
413 | ||
414 | devc = sdi->priv; | |
415 | ||
416 | switch (key) { | |
417 | case SR_CONF_CONN: | |
418 | if (!sdi->conn) | |
419 | return SR_ERR_ARG; | |
420 | usb = sdi->conn; | |
421 | if (usb->address == 255) | |
422 | /* Device still needs to re-enumerate after firmware | |
423 | * upload, so we don't know its (future) address. */ | |
424 | return SR_ERR; | |
425 | snprintf(str, 128, "%d.%d", usb->bus, usb->address); | |
426 | *data = g_variant_new_string(str); | |
427 | break; | |
428 | case SR_CONF_LIMIT_SAMPLES: | |
429 | *data = g_variant_new_uint64(devc->limit_samples); | |
430 | break; | |
431 | case SR_CONF_SAMPLERATE: | |
432 | *data = g_variant_new_uint64(devc->cur_samplerate); | |
433 | break; | |
434 | default: | |
435 | return SR_ERR_NA; | |
436 | } | |
437 | ||
438 | return SR_OK; | |
439 | } | |
440 | ||
441 | static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, | |
442 | const struct sr_channel_group *cg) | |
443 | { | |
444 | struct dev_context *devc; | |
445 | uint64_t arg; | |
446 | unsigned int i; | |
447 | int ret; | |
448 | ||
449 | (void)cg; | |
450 | ||
451 | if (!sdi) | |
452 | return SR_ERR_ARG; | |
453 | ||
454 | if (sdi->status != SR_ST_ACTIVE) | |
455 | return SR_ERR; | |
456 | ||
457 | devc = sdi->priv; | |
458 | ||
459 | ret = SR_OK; | |
460 | ||
461 | switch (key) { | |
462 | case SR_CONF_SAMPLERATE: | |
463 | arg = g_variant_get_uint64(data); | |
464 | for (i = 0; i < ARRAY_SIZE(samplerates); i++) { | |
465 | if (samplerates[i] == arg) { | |
466 | devc->cur_samplerate = arg; | |
467 | break; | |
468 | } | |
469 | } | |
470 | if (i == ARRAY_SIZE(samplerates)) | |
471 | ret = SR_ERR_ARG; | |
472 | break; | |
473 | case SR_CONF_LIMIT_SAMPLES: | |
474 | devc->limit_samples = g_variant_get_uint64(data); | |
475 | break; | |
476 | default: | |
477 | ret = SR_ERR_NA; | |
478 | } | |
479 | ||
480 | return ret; | |
481 | } | |
482 | ||
483 | static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, | |
484 | const struct sr_channel_group *cg) | |
485 | { | |
486 | GVariant *gvar; | |
487 | GVariantBuilder gvb; | |
488 | ||
489 | (void)sdi; | |
490 | (void)cg; | |
491 | ||
492 | switch (key) { | |
493 | case SR_CONF_SCAN_OPTIONS: | |
494 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
495 | scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t)); | |
496 | break; | |
497 | case SR_CONF_DEVICE_OPTIONS: | |
498 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
499 | devopts, ARRAY_SIZE(devopts), sizeof(uint32_t)); | |
500 | break; | |
501 | case SR_CONF_SAMPLERATE: | |
502 | g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}")); | |
503 | gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), samplerates, | |
504 | ARRAY_SIZE(samplerates), sizeof(uint64_t)); | |
505 | g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar); | |
506 | *data = g_variant_builder_end(&gvb); | |
507 | break; | |
508 | case SR_CONF_TRIGGER_MATCH: | |
509 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, | |
510 | soft_trigger_matches, ARRAY_SIZE(soft_trigger_matches), | |
511 | sizeof(int32_t)); | |
512 | break; | |
513 | default: | |
514 | return SR_ERR_NA; | |
515 | } | |
516 | ||
517 | return SR_OK; | |
518 | } | |
519 | ||
520 | static int receive_data(int fd, int revents, void *cb_data) | |
521 | { | |
522 | struct timeval tv; | |
523 | struct drv_context *drvc; | |
524 | ||
525 | (void)fd; | |
526 | (void)revents; | |
527 | (void)cb_data; | |
528 | ||
529 | drvc = di->priv; | |
530 | ||
531 | tv.tv_sec = tv.tv_usec = 0; | |
532 | libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv); | |
533 | ||
534 | return TRUE; | |
535 | } | |
536 | ||
537 | static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data) | |
538 | { | |
539 | struct dev_context *devc; | |
540 | struct drv_context *drvc; | |
541 | struct sr_usb_dev_inst *usb; | |
542 | struct sr_trigger *trigger; | |
543 | struct libusb_transfer *transfer; | |
544 | unsigned int i, timeout, num_transfers; | |
545 | int ret; | |
546 | unsigned char *buf; | |
547 | size_t size; | |
548 | ||
549 | if (sdi->status != SR_ST_ACTIVE) | |
550 | return SR_ERR_DEV_CLOSED; | |
551 | ||
552 | drvc = di->priv; | |
553 | devc = sdi->priv; | |
554 | usb = sdi->conn; | |
555 | ||
556 | devc->cb_data = cb_data; | |
557 | devc->sent_samples = 0; | |
558 | devc->acq_aborted = FALSE; | |
559 | devc->empty_transfer_count = 0; | |
560 | ||
561 | if ((trigger = sr_session_trigger_get(sdi->session))) { | |
562 | devc->stl = soft_trigger_logic_new(sdi, trigger); | |
563 | devc->trigger_fired = FALSE; | |
564 | } else | |
565 | devc->trigger_fired = TRUE; | |
566 | ||
567 | timeout = fx2lafw_get_timeout(devc); | |
568 | num_transfers = fx2lafw_get_number_of_transfers(devc); | |
569 | size = fx2lafw_get_buffer_size(devc); | |
570 | devc->submitted_transfers = 0; | |
571 | ||
572 | devc->transfers = g_try_malloc0(sizeof(*devc->transfers) * num_transfers); | |
573 | if (!devc->transfers) { | |
574 | sr_err("USB transfers malloc failed."); | |
575 | return SR_ERR_MALLOC; | |
576 | } | |
577 | ||
578 | devc->num_transfers = num_transfers; | |
579 | for (i = 0; i < num_transfers; i++) { | |
580 | if (!(buf = g_try_malloc(size))) { | |
581 | sr_err("USB transfer buffer malloc failed."); | |
582 | return SR_ERR_MALLOC; | |
583 | } | |
584 | transfer = libusb_alloc_transfer(0); | |
585 | libusb_fill_bulk_transfer(transfer, usb->devhdl, | |
586 | 2 | LIBUSB_ENDPOINT_IN, buf, size, | |
587 | fx2lafw_receive_transfer, (void *)sdi, timeout); | |
588 | if ((ret = libusb_submit_transfer(transfer)) != 0) { | |
589 | sr_err("Failed to submit transfer: %s.", | |
590 | libusb_error_name(ret)); | |
591 | libusb_free_transfer(transfer); | |
592 | g_free(buf); | |
593 | fx2lafw_abort_acquisition(devc); | |
594 | return SR_ERR; | |
595 | } | |
596 | devc->transfers[i] = transfer; | |
597 | devc->submitted_transfers++; | |
598 | } | |
599 | ||
600 | devc->ctx = drvc->sr_ctx; | |
601 | ||
602 | usb_source_add(sdi->session, devc->ctx, timeout, receive_data, NULL); | |
603 | ||
604 | /* Send header packet to the session bus. */ | |
605 | std_session_send_df_header(cb_data, LOG_PREFIX); | |
606 | ||
607 | if ((ret = fx2lafw_command_start_acquisition(sdi)) != SR_OK) { | |
608 | fx2lafw_abort_acquisition(devc); | |
609 | return ret; | |
610 | } | |
611 | ||
612 | return SR_OK; | |
613 | } | |
614 | ||
615 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) | |
616 | { | |
617 | (void)cb_data; | |
618 | ||
619 | fx2lafw_abort_acquisition(sdi->priv); | |
620 | ||
621 | return SR_OK; | |
622 | } | |
623 | ||
624 | SR_PRIV struct sr_dev_driver fx2lafw_driver_info = { | |
625 | .name = "fx2lafw", | |
626 | .longname = "fx2lafw (generic driver for FX2 based LAs)", | |
627 | .api_version = 1, | |
628 | .init = init, | |
629 | .cleanup = cleanup, | |
630 | .scan = scan, | |
631 | .dev_list = dev_list, | |
632 | .dev_clear = NULL, | |
633 | .config_get = config_get, | |
634 | .config_set = config_set, | |
635 | .config_list = config_list, | |
636 | .dev_open = dev_open, | |
637 | .dev_close = dev_close, | |
638 | .dev_acquisition_start = dev_acquisition_start, | |
639 | .dev_acquisition_stop = dev_acquisition_stop, | |
640 | .priv = NULL, | |
641 | }; |