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dslogic: Fix incorrect samplerate setting.
[libsigrok.git] / src / hardware / fx2lafw / api.c
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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#include "dslogic.h"
23
24static const struct fx2lafw_profile supported_fx2[] = {
25 /*
26 * CWAV USBee AX
27 * EE Electronics ESLA201A
28 * ARMFLY AX-Pro
29 */
30 { 0x08a9, 0x0014, "CWAV", "USBee AX", NULL,
31 FIRMWARE_DIR "/fx2lafw-cwav-usbeeax.fw",
32 0, NULL, NULL},
33 /*
34 * CWAV USBee DX
35 * XZL-Studio DX
36 */
37 { 0x08a9, 0x0015, "CWAV", "USBee DX", NULL,
38 FIRMWARE_DIR "/fx2lafw-cwav-usbeedx.fw",
39 DEV_CAPS_16BIT, NULL, NULL },
40
41 /*
42 * CWAV USBee SX
43 */
44 { 0x08a9, 0x0009, "CWAV", "USBee SX", NULL,
45 FIRMWARE_DIR "/fx2lafw-cwav-usbeesx.fw",
46 0, NULL, NULL},
47
48 /*
49 * DreamSourceLab DSLogic (before FW upload)
50 */
51 { 0x2a0e, 0x0001, "DreamSourceLab", "DSLogic", NULL,
52 FIRMWARE_DIR "/dreamsourcelab-dslogic-fx2.fw",
53 DEV_CAPS_16BIT, NULL, NULL},
54
55 /*
56 * DreamSourceLab DSLogic (after FW upload)
57 */
58 { 0x2a0e, 0x0001, "DreamSourceLab", "DSLogic", NULL,
59 FIRMWARE_DIR "/dreamsourcelab-dslogic-fx2.fw",
60 DEV_CAPS_16BIT, "DreamSourceLab", "DSLogic"},
61
62 /*
63 * Saleae Logic
64 * EE Electronics ESLA100
65 * Robomotic MiniLogic
66 * Robomotic BugLogic 3
67 */
68 { 0x0925, 0x3881, "Saleae", "Logic", NULL,
69 FIRMWARE_DIR "/fx2lafw-saleae-logic.fw",
70 0, NULL, NULL},
71
72 /*
73 * Default Cypress FX2 without EEPROM, e.g.:
74 * Lcsoft Mini Board
75 * Braintechnology USB Interface V2.x
76 */
77 { 0x04B4, 0x8613, "Cypress", "FX2", NULL,
78 FIRMWARE_DIR "/fx2lafw-cypress-fx2.fw",
79 DEV_CAPS_16BIT, NULL, NULL },
80
81 /*
82 * Braintechnology USB-LPS
83 */
84 { 0x16d0, 0x0498, "Braintechnology", "USB-LPS", NULL,
85 FIRMWARE_DIR "/fx2lafw-braintechnology-usb-lps.fw",
86 DEV_CAPS_16BIT, NULL, NULL },
87
88 { 0, 0, 0, 0, 0, 0, 0, 0, 0 }
89};
90
91static const uint32_t drvopts[] = {
92 SR_CONF_LOGIC_ANALYZER,
93};
94
95static const uint32_t scanopts[] = {
96 SR_CONF_CONN,
97};
98
99static const uint32_t devopts[] = {
100 SR_CONF_CONTINUOUS | SR_CONF_SET,
101 SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET,
102 SR_CONF_CONN | SR_CONF_GET,
103 SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
104 SR_CONF_TRIGGER_MATCH | SR_CONF_LIST,
105 SR_CONF_CAPTURE_RATIO | SR_CONF_GET | SR_CONF_SET,
106};
107
108static const char *channel_names[] = {
109 "0", "1", "2", "3", "4", "5", "6", "7",
110 "8", "9", "10", "11", "12", "13", "14", "15",
111};
112
113static const int32_t soft_trigger_matches[] = {
114 SR_TRIGGER_ZERO,
115 SR_TRIGGER_ONE,
116 SR_TRIGGER_RISING,
117 SR_TRIGGER_FALLING,
118 SR_TRIGGER_EDGE,
119};
120
121static const uint64_t samplerates[] = {
122 SR_KHZ(20),
123 SR_KHZ(25),
124 SR_KHZ(50),
125 SR_KHZ(100),
126 SR_KHZ(200),
127 SR_KHZ(250),
128 SR_KHZ(500),
129 SR_MHZ(1),
130 SR_MHZ(2),
131 SR_MHZ(3),
132 SR_MHZ(4),
133 SR_MHZ(6),
134 SR_MHZ(8),
135 SR_MHZ(12),
136 SR_MHZ(16),
137 SR_MHZ(24),
138};
139
140static const uint64_t dslogic_samplerates[] = {
141 SR_KHZ(10),
142 SR_KHZ(20),
143 SR_KHZ(50),
144 SR_KHZ(100),
145 SR_KHZ(200),
146 SR_KHZ(500),
147 SR_MHZ(1),
148 SR_MHZ(2),
149 SR_MHZ(5),
150 SR_MHZ(10),
151 SR_MHZ(20),
152 SR_MHZ(25),
153 SR_MHZ(50),
154 SR_MHZ(100),
155 SR_MHZ(200),
156 SR_MHZ(400),
157};
158
159SR_PRIV struct sr_dev_driver fx2lafw_driver_info;
160
161static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
162{
163 return std_init(sr_ctx, di, LOG_PREFIX);
164}
165
166static GSList *scan(struct sr_dev_driver *di, GSList *options)
167{
168 struct drv_context *drvc;
169 struct dev_context *devc;
170 struct sr_dev_inst *sdi;
171 struct sr_usb_dev_inst *usb;
172 struct sr_config *src;
173 const struct fx2lafw_profile *prof;
174 GSList *l, *devices, *conn_devices;
175 gboolean has_firmware;
176 struct libusb_device_descriptor des;
177 libusb_device **devlist;
178 struct libusb_device_handle *hdl;
179 int num_logic_channels, ret, i, j;
180 const char *conn;
181 char manufacturer[64], product[64], serial_num[64], connection_id[64];
182
183 drvc = di->priv;
184
185 conn = NULL;
186 for (l = options; l; l = l->next) {
187 src = l->data;
188 switch (src->key) {
189 case SR_CONF_CONN:
190 conn = g_variant_get_string(src->data, NULL);
191 break;
192 }
193 }
194 if (conn)
195 conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn);
196 else
197 conn_devices = NULL;
198
199 /* Find all fx2lafw compatible devices and upload firmware to them. */
200 devices = NULL;
201 libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
202 for (i = 0; devlist[i]; i++) {
203 if (conn) {
204 usb = NULL;
205 for (l = conn_devices; l; l = l->next) {
206 usb = l->data;
207 if (usb->bus == libusb_get_bus_number(devlist[i])
208 && usb->address == libusb_get_device_address(devlist[i]))
209 break;
210 }
211 if (!l)
212 /* This device matched none of the ones that
213 * matched the conn specification. */
214 continue;
215 }
216
217 if ((ret = libusb_get_device_descriptor( devlist[i], &des)) != 0) {
218 sr_warn("Failed to get device descriptor: %s.",
219 libusb_error_name(ret));
220 continue;
221 }
222
223 if ((ret = libusb_open(devlist[i], &hdl)) < 0)
224 continue;
225
226 if (des.iManufacturer == 0) {
227 manufacturer[0] = '\0';
228 } else if ((ret = libusb_get_string_descriptor_ascii(hdl,
229 des.iManufacturer, (unsigned char *) manufacturer,
230 sizeof(manufacturer))) < 0) {
231 sr_warn("Failed to get manufacturer string descriptor: %s.",
232 libusb_error_name(ret));
233 continue;
234 }
235
236 if (des.iProduct == 0) {
237 product[0] = '\0';
238 } else if ((ret = libusb_get_string_descriptor_ascii(hdl,
239 des.iProduct, (unsigned char *) product,
240 sizeof(product))) < 0) {
241 sr_warn("Failed to get product string descriptor: %s.",
242 libusb_error_name(ret));
243 continue;
244 }
245
246 if (des.iSerialNumber == 0) {
247 serial_num[0] = '\0';
248 } else if ((ret = libusb_get_string_descriptor_ascii(hdl,
249 des.iSerialNumber, (unsigned char *) serial_num,
250 sizeof(serial_num))) < 0) {
251 sr_warn("Failed to get serial number string descriptor: %s.",
252 libusb_error_name(ret));
253 continue;
254 }
255
256 usb_get_port_path(devlist[i], connection_id, sizeof(connection_id));
257
258 libusb_close(hdl);
259
260 prof = NULL;
261 for (j = 0; supported_fx2[j].vid; j++) {
262 if (des.idVendor == supported_fx2[j].vid &&
263 des.idProduct == supported_fx2[j].pid &&
264 (!supported_fx2[j].usb_manufacturer ||
265 !strcmp(manufacturer, supported_fx2[j].usb_manufacturer)) &&
266 (!supported_fx2[j].usb_manufacturer ||
267 !strcmp(product, supported_fx2[j].usb_product))) {
268 prof = &supported_fx2[j];
269 break;
270 }
271 }
272
273 /* Skip if the device was not found. */
274 if (!prof)
275 continue;
276
277 sdi = g_malloc0(sizeof(struct sr_dev_inst));
278 sdi->status = SR_ST_INITIALIZING;
279 sdi->vendor = g_strdup(prof->vendor);
280 sdi->model = g_strdup(prof->model);
281 sdi->version = g_strdup(prof->model_version);
282 sdi->driver = di;
283 sdi->serial_num = g_strdup(serial_num);
284 sdi->connection_id = g_strdup(connection_id);
285
286 /* Fill in channellist according to this device's profile. */
287 num_logic_channels = prof->dev_caps & DEV_CAPS_16BIT ? 16 : 8;
288 for (j = 0; j < num_logic_channels; j++)
289 sr_channel_new(sdi, j, SR_CHANNEL_LOGIC, TRUE,
290 channel_names[j]);
291
292 devc = fx2lafw_dev_new();
293 devc->profile = prof;
294 devc->sample_wide = (prof->dev_caps & DEV_CAPS_16BIT) != 0;
295 sdi->priv = devc;
296 drvc->instances = g_slist_append(drvc->instances, sdi);
297 devices = g_slist_append(devices, sdi);
298
299 if (strcmp(prof->model, "DSLogic")) {
300 devc->dslogic = FALSE;
301 devc->samplerates = samplerates;
302 devc->num_samplerates = ARRAY_SIZE(samplerates);
303 has_firmware = match_manuf_prod(devlist[i],
304 "sigrok", "fx2lafw");
305 } else {
306 devc->dslogic = TRUE;
307 devc->samplerates = dslogic_samplerates;
308 devc->num_samplerates = ARRAY_SIZE(dslogic_samplerates);
309 has_firmware = match_manuf_prod(devlist[i],
310 "DreamSourceLab", "DSLogic");
311 }
312
313 if (has_firmware) {
314 /* Already has the firmware, so fix the new address. */
315 sr_dbg("Found an fx2lafw device.");
316 sdi->status = SR_ST_INACTIVE;
317 sdi->inst_type = SR_INST_USB;
318 sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]),
319 libusb_get_device_address(devlist[i]), NULL);
320 } else {
321 if (ezusb_upload_firmware(devlist[i], USB_CONFIGURATION,
322 prof->firmware) == SR_OK)
323 /* Store when this device's FW was updated. */
324 devc->fw_updated = g_get_monotonic_time();
325 else
326 sr_err("Firmware upload failed for "
327 "device %d.%d (logical).",
328 libusb_get_bus_number(devlist[i]),
329 libusb_get_device_address(devlist[i]));
330 sdi->inst_type = SR_INST_USB;
331 sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]),
332 0xff, NULL);
333 }
334 }
335 libusb_free_device_list(devlist, 1);
336 g_slist_free_full(conn_devices, (GDestroyNotify)sr_usb_dev_inst_free);
337
338 return devices;
339}
340
341static GSList *dev_list(const struct sr_dev_driver *di)
342{
343 return ((struct drv_context *)(di->priv))->instances;
344}
345
346static int dev_open(struct sr_dev_inst *sdi)
347{
348 struct sr_dev_driver *di = sdi->driver;
349 struct sr_usb_dev_inst *usb;
350 struct dev_context *devc;
351 int ret;
352 int64_t timediff_us, timediff_ms;
353
354 devc = sdi->priv;
355 usb = sdi->conn;
356
357 /*
358 * If the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS
359 * milliseconds for the FX2 to renumerate.
360 */
361 ret = SR_ERR;
362 if (devc->fw_updated > 0) {
363 sr_info("Waiting for device to reset.");
364 /* Takes >= 300ms for the FX2 to be gone from the USB bus. */
365 g_usleep(300 * 1000);
366 timediff_ms = 0;
367 while (timediff_ms < MAX_RENUM_DELAY_MS) {
368 if ((ret = fx2lafw_dev_open(sdi, di)) == SR_OK)
369 break;
370 g_usleep(100 * 1000);
371
372 timediff_us = g_get_monotonic_time() - devc->fw_updated;
373 timediff_ms = timediff_us / 1000;
374 sr_spew("Waited %" PRIi64 "ms.", timediff_ms);
375 }
376 if (ret != SR_OK) {
377 sr_err("Device failed to renumerate.");
378 return SR_ERR;
379 }
380 sr_info("Device came back after %" PRIi64 "ms.", timediff_ms);
381 } else {
382 sr_info("Firmware upload was not needed.");
383 ret = fx2lafw_dev_open(sdi, di);
384 }
385
386 if (ret != SR_OK) {
387 sr_err("Unable to open device.");
388 return SR_ERR;
389 }
390
391 ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE);
392 if (ret != 0) {
393 switch (ret) {
394 case LIBUSB_ERROR_BUSY:
395 sr_err("Unable to claim USB interface. Another "
396 "program or driver has already claimed it.");
397 break;
398 case LIBUSB_ERROR_NO_DEVICE:
399 sr_err("Device has been disconnected.");
400 break;
401 default:
402 sr_err("Unable to claim interface: %s.",
403 libusb_error_name(ret));
404 break;
405 }
406
407 return SR_ERR;
408 }
409
410 if (devc->dslogic) {
411 if ((ret = dslogic_fpga_firmware_upload(sdi,
412 DSLOGIC_FPGA_FIRMWARE)) != SR_OK)
413 return ret;
414 }
415
416 if (devc->cur_samplerate == 0) {
417 /* Samplerate hasn't been set; default to the slowest one. */
418 devc->cur_samplerate = devc->samplerates[0];
419 }
420
421 return SR_OK;
422}
423
424static int dev_close(struct sr_dev_inst *sdi)
425{
426 struct sr_usb_dev_inst *usb;
427
428 usb = sdi->conn;
429 if (!usb->devhdl)
430 return SR_ERR;
431
432 sr_info("fx2lafw: Closing device on %d.%d (logical) / %s (physical) interface %d.",
433 usb->bus, usb->address, sdi->connection_id, USB_INTERFACE);
434 libusb_release_interface(usb->devhdl, USB_INTERFACE);
435 libusb_close(usb->devhdl);
436 usb->devhdl = NULL;
437 sdi->status = SR_ST_INACTIVE;
438
439 return SR_OK;
440}
441
442static int cleanup(const struct sr_dev_driver *di)
443{
444 int ret;
445 struct drv_context *drvc;
446
447 if (!(drvc = di->priv))
448 return SR_OK;
449
450 ret = std_dev_clear(di, NULL);
451
452 g_free(drvc);
453
454 return ret;
455}
456
457static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
458 const struct sr_channel_group *cg)
459{
460 struct dev_context *devc;
461 struct sr_usb_dev_inst *usb;
462 char str[128];
463
464 (void)cg;
465
466 if (!sdi)
467 return SR_ERR_ARG;
468
469 devc = sdi->priv;
470
471 switch (key) {
472 case SR_CONF_CONN:
473 if (!sdi->conn)
474 return SR_ERR_ARG;
475 usb = sdi->conn;
476 if (usb->address == 255)
477 /* Device still needs to re-enumerate after firmware
478 * upload, so we don't know its (future) address. */
479 return SR_ERR;
480 snprintf(str, 128, "%d.%d", usb->bus, usb->address);
481 *data = g_variant_new_string(str);
482 break;
483 case SR_CONF_LIMIT_SAMPLES:
484 *data = g_variant_new_uint64(devc->limit_samples);
485 break;
486 case SR_CONF_SAMPLERATE:
487 *data = g_variant_new_uint64(devc->cur_samplerate);
488 break;
489 case SR_CONF_CAPTURE_RATIO:
490 *data = g_variant_new_uint64(devc->capture_ratio);
491 break;
492 default:
493 return SR_ERR_NA;
494 }
495
496 return SR_OK;
497}
498
499static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
500 const struct sr_channel_group *cg)
501{
502 struct dev_context *devc;
503 uint64_t arg;
504 int i, ret;
505
506 (void)cg;
507
508 if (!sdi)
509 return SR_ERR_ARG;
510
511 if (sdi->status != SR_ST_ACTIVE)
512 return SR_ERR;
513
514 devc = sdi->priv;
515
516 ret = SR_OK;
517
518 switch (key) {
519 case SR_CONF_SAMPLERATE:
520 arg = g_variant_get_uint64(data);
521 for (i = 0; i < devc->num_samplerates; i++) {
522 if (devc->samplerates[i] == arg) {
523 devc->cur_samplerate = arg;
524 break;
525 }
526 }
527 if (i == devc->num_samplerates)
528 ret = SR_ERR_ARG;
529 break;
530 case SR_CONF_LIMIT_SAMPLES:
531 devc->limit_samples = g_variant_get_uint64(data);
532 break;
533 case SR_CONF_CAPTURE_RATIO:
534 devc->capture_ratio = g_variant_get_uint64(data);
535 if (devc->capture_ratio > 100) {
536 devc->capture_ratio = 0;
537 ret = SR_ERR;
538 } else
539 ret = SR_OK;
540 break;
541 default:
542 ret = SR_ERR_NA;
543 }
544
545 return ret;
546}
547
548static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
549 const struct sr_channel_group *cg)
550{
551 struct dev_context *devc;
552 GVariant *gvar;
553 GVariantBuilder gvb;
554
555 (void)cg;
556
557 switch (key) {
558 case SR_CONF_SCAN_OPTIONS:
559 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
560 scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
561 break;
562 case SR_CONF_DEVICE_OPTIONS:
563 if (!sdi)
564 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
565 drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t));
566 else
567 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
568 devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
569 break;
570 case SR_CONF_SAMPLERATE:
571 if (!sdi->priv)
572 return SR_ERR_ARG;
573 devc = sdi->priv;
574 g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
575 gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), devc->samplerates,
576 devc->num_samplerates, sizeof(uint64_t));
577 g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar);
578 *data = g_variant_builder_end(&gvb);
579 break;
580 case SR_CONF_TRIGGER_MATCH:
581 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
582 soft_trigger_matches, ARRAY_SIZE(soft_trigger_matches),
583 sizeof(int32_t));
584 break;
585 default:
586 return SR_ERR_NA;
587 }
588
589 return SR_OK;
590}
591
592static int receive_data(int fd, int revents, void *cb_data)
593{
594 struct timeval tv;
595 struct drv_context *drvc;
596
597 (void)fd;
598 (void)revents;
599
600 drvc = (struct drv_context *)cb_data;
601
602 tv.tv_sec = tv.tv_usec = 0;
603 libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv);
604
605 return TRUE;
606}
607
608static int start_transfers(const struct sr_dev_inst *sdi)
609{
610 struct dev_context *devc;
611 struct sr_usb_dev_inst *usb;
612 struct sr_trigger *trigger;
613 struct libusb_transfer *transfer;
614 unsigned int i, num_transfers;
615 int endpoint, timeout, ret;
616 unsigned char *buf;
617 size_t size;
618
619 devc = sdi->priv;
620 usb = sdi->conn;
621
622 devc->sent_samples = 0;
623 devc->acq_aborted = FALSE;
624 devc->empty_transfer_count = 0;
625
626 if ((trigger = sr_session_trigger_get(sdi->session))) {
627 int pre_trigger_samples = 0;
628 if (devc->limit_samples > 0)
629 pre_trigger_samples = devc->capture_ratio * devc->limit_samples/100;
630 devc->stl = soft_trigger_logic_new(sdi, trigger, pre_trigger_samples);
631 if (!devc->stl)
632 return SR_ERR_MALLOC;
633 devc->trigger_fired = FALSE;
634 } else
635 devc->trigger_fired = TRUE;
636
637 timeout = fx2lafw_get_timeout(devc);
638
639 num_transfers = fx2lafw_get_number_of_transfers(devc);
640 size = fx2lafw_get_buffer_size(devc);
641 devc->submitted_transfers = 0;
642
643 devc->transfers = g_try_malloc0(sizeof(*devc->transfers) * num_transfers);
644 if (!devc->transfers) {
645 sr_err("USB transfers malloc failed.");
646 return SR_ERR_MALLOC;
647 }
648
649 timeout = fx2lafw_get_timeout(devc);
650 endpoint = devc->dslogic ? 6 : 2;
651 devc->num_transfers = num_transfers;
652 for (i = 0; i < num_transfers; i++) {
653 if (!(buf = g_try_malloc(size))) {
654 sr_err("USB transfer buffer malloc failed.");
655 return SR_ERR_MALLOC;
656 }
657 transfer = libusb_alloc_transfer(0);
658 libusb_fill_bulk_transfer(transfer, usb->devhdl,
659 endpoint | LIBUSB_ENDPOINT_IN, buf, size,
660 fx2lafw_receive_transfer, (void *)sdi, timeout);
661 if ((ret = libusb_submit_transfer(transfer)) != 0) {
662 sr_err("Failed to submit transfer: %s.",
663 libusb_error_name(ret));
664 libusb_free_transfer(transfer);
665 g_free(buf);
666 fx2lafw_abort_acquisition(devc);
667 return SR_ERR;
668 }
669 devc->transfers[i] = transfer;
670 devc->submitted_transfers++;
671 }
672
673 /* Send header packet to the session bus. */
674 std_session_send_df_header(sdi, LOG_PREFIX);
675
676 return SR_OK;
677}
678
679static void LIBUSB_CALL dslogic_trigger_receive(struct libusb_transfer *transfer)
680{
681 const struct sr_dev_inst *sdi;
682 struct dslogic_trigger_pos *tpos;
683
684 sdi = transfer->user_data;
685
686 if (transfer->status == LIBUSB_TRANSFER_COMPLETED
687 && transfer->actual_length == sizeof(struct dslogic_trigger_pos)) {
688 tpos = (struct dslogic_trigger_pos *)transfer->buffer;
689 sr_dbg("tpos real_pos %.8x ram_saddr %.8x", tpos->real_pos, tpos->ram_saddr);
690 g_free(tpos);
691 start_transfers(sdi);
692 }
693
694 libusb_free_transfer(transfer);
695
696}
697
698static int dslogic_trigger_request(const struct sr_dev_inst *sdi)
699{
700 struct sr_usb_dev_inst *usb;
701 struct libusb_transfer *transfer;
702 struct dslogic_trigger_pos *tpos;
703 int ret;
704
705 usb = sdi->conn;
706
707 if ((ret = dslogic_stop_acquisition(sdi)) != SR_OK)
708 return ret;
709
710 if ((ret = dslogic_fpga_configure(sdi)) != SR_OK)
711 return ret;
712
713 if ((ret = dslogic_start_acquisition(sdi)) != SR_OK)
714 return ret;
715
716 sr_dbg("Getting trigger.");
717 tpos = g_malloc(sizeof(struct dslogic_trigger_pos));
718 transfer = libusb_alloc_transfer(0);
719 libusb_fill_bulk_transfer(transfer, usb->devhdl, 6 | LIBUSB_ENDPOINT_IN,
720 (unsigned char *)tpos, sizeof(struct dslogic_trigger_pos),
721 dslogic_trigger_receive, (void *)sdi, 0);
722 if ((ret = libusb_submit_transfer(transfer)) < 0) {
723 sr_err("Failed to request trigger: %s.", libusb_error_name(ret));
724 libusb_free_transfer(transfer);
725 g_free(tpos);
726 return SR_ERR;
727 }
728
729 return ret;
730}
731
732static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
733{
734 struct sr_dev_driver *di;
735 struct drv_context *drvc;
736 struct dev_context *devc;
737 int timeout, ret;
738
739 if (sdi->status != SR_ST_ACTIVE)
740 return SR_ERR_DEV_CLOSED;
741
742 di = sdi->driver;
743 drvc = di->priv;
744 devc = sdi->priv;
745
746 devc->ctx = drvc->sr_ctx;
747 devc->cb_data = cb_data;
748 devc->sent_samples = 0;
749 devc->empty_transfer_count = 0;
750 devc->acq_aborted = FALSE;
751
752 timeout = fx2lafw_get_timeout(devc);
753 usb_source_add(sdi->session, devc->ctx, timeout, receive_data, drvc);
754
755 if (devc->dslogic) {
756 dslogic_trigger_request(sdi);
757 }
758 else {
759 if ((ret = fx2lafw_command_start_acquisition(sdi)) != SR_OK)
760 return ret;
761 start_transfers(sdi);
762 }
763
764 return SR_OK;
765}
766
767static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
768{
769 (void)cb_data;
770
771 fx2lafw_abort_acquisition(sdi->priv);
772
773 return SR_OK;
774}
775
776SR_PRIV struct sr_dev_driver fx2lafw_driver_info = {
777 .name = "fx2lafw",
778 .longname = "fx2lafw (generic driver for FX2 based LAs)",
779 .api_version = 1,
780 .init = init,
781 .cleanup = cleanup,
782 .scan = scan,
783 .dev_list = dev_list,
784 .dev_clear = NULL,
785 .config_get = config_get,
786 .config_set = config_set,
787 .config_list = config_list,
788 .dev_open = dev_open,
789 .dev_close = dev_close,
790 .dev_acquisition_start = dev_acquisition_start,
791 .dev_acquisition_stop = dev_acquisition_stop,
792 .priv = NULL,
793};
Hardware access and backend lib