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Construct driver array at runtime, from an array of per-file arrays.
[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 NULL,
112};
113
114static const int32_t soft_trigger_matches[] = {
115 SR_TRIGGER_ZERO,
116 SR_TRIGGER_ONE,
117 SR_TRIGGER_RISING,
118 SR_TRIGGER_FALLING,
119 SR_TRIGGER_EDGE,
120};
121
122static const uint64_t samplerates[] = {
123 SR_KHZ(20),
124 SR_KHZ(25),
125 SR_KHZ(50),
126 SR_KHZ(100),
127 SR_KHZ(200),
128 SR_KHZ(250),
129 SR_KHZ(500),
130 SR_MHZ(1),
131 SR_MHZ(2),
132 SR_MHZ(3),
133 SR_MHZ(4),
134 SR_MHZ(6),
135 SR_MHZ(8),
136 SR_MHZ(12),
137 SR_MHZ(16),
138 SR_MHZ(24),
139};
140
141static const uint64_t dslogic_samplerates[] = {
142 SR_KHZ(10),
143 SR_KHZ(20),
144 SR_KHZ(50),
145 SR_KHZ(100),
146 SR_KHZ(200),
147 SR_KHZ(500),
148 SR_MHZ(1),
149 SR_MHZ(2),
150 SR_MHZ(5),
151 SR_MHZ(10),
152 SR_MHZ(20),
153 SR_MHZ(25),
154 SR_MHZ(50),
155 SR_MHZ(100),
156 SR_MHZ(200),
157 SR_MHZ(400),
158};
159
160SR_PRIV struct sr_dev_driver fx2lafw_driver_info;
161static struct sr_dev_driver *di = &fx2lafw_driver_info;
162
163static int init(struct sr_context *sr_ctx)
164{
165 return std_init(sr_ctx, di, LOG_PREFIX);
166}
167
168static GSList *scan(GSList *options)
169{
170 struct drv_context *drvc;
171 struct dev_context *devc;
172 struct sr_dev_inst *sdi;
173 struct sr_usb_dev_inst *usb;
174 struct sr_config *src;
175 const struct fx2lafw_profile *prof;
176 GSList *l, *devices, *conn_devices;
177 gboolean has_firmware;
178 struct libusb_device_descriptor des;
179 libusb_device **devlist;
180 struct libusb_device_handle *hdl;
181 int num_logic_channels, ret, i, j;
182 const char *conn;
183 char manufacturer[64], product[64], serial_num[64], connection_id[64];
184
185 drvc = di->priv;
186
187 conn = NULL;
188 for (l = options; l; l = l->next) {
189 src = l->data;
190 switch (src->key) {
191 case SR_CONF_CONN:
192 conn = g_variant_get_string(src->data, NULL);
193 break;
194 }
195 }
196 if (conn)
197 conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn);
198 else
199 conn_devices = NULL;
200
201 /* Find all fx2lafw compatible devices and upload firmware to them. */
202 devices = NULL;
203 libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
204 for (i = 0; devlist[i]; i++) {
205 if (conn) {
206 usb = NULL;
207 for (l = conn_devices; l; l = l->next) {
208 usb = l->data;
209 if (usb->bus == libusb_get_bus_number(devlist[i])
210 && usb->address == libusb_get_device_address(devlist[i]))
211 break;
212 }
213 if (!l)
214 /* This device matched none of the ones that
215 * matched the conn specification. */
216 continue;
217 }
218
219 if ((ret = libusb_get_device_descriptor( devlist[i], &des)) != 0) {
220 sr_warn("Failed to get device descriptor: %s.",
221 libusb_error_name(ret));
222 continue;
223 }
224
225 if ((ret = libusb_open(devlist[i], &hdl)) < 0)
226 continue;
227
228 if (des.iManufacturer == 0) {
229 manufacturer[0] = '\0';
230 } else if ((ret = libusb_get_string_descriptor_ascii(hdl,
231 des.iManufacturer, (unsigned char *) manufacturer,
232 sizeof(manufacturer))) < 0) {
233 sr_warn("Failed to get manufacturer string descriptor: %s.",
234 libusb_error_name(ret));
235 continue;
236 }
237
238 if (des.iProduct == 0) {
239 product[0] = '\0';
240 } else if ((ret = libusb_get_string_descriptor_ascii(hdl,
241 des.iProduct, (unsigned char *) product,
242 sizeof(product))) < 0) {
243 sr_warn("Failed to get product string descriptor: %s.",
244 libusb_error_name(ret));
245 continue;
246 }
247
248 if (des.iSerialNumber == 0) {
249 serial_num[0] = '\0';
250 } else if ((ret = libusb_get_string_descriptor_ascii(hdl,
251 des.iSerialNumber, (unsigned char *) serial_num,
252 sizeof(serial_num))) < 0) {
253 sr_warn("Failed to get serial number string descriptor: %s.",
254 libusb_error_name(ret));
255 continue;
256 }
257
258 usb_get_port_path(devlist[i], connection_id, sizeof(connection_id));
259
260 libusb_close(hdl);
261
262 prof = NULL;
263 for (j = 0; supported_fx2[j].vid; j++) {
264 if (des.idVendor == supported_fx2[j].vid &&
265 des.idProduct == supported_fx2[j].pid &&
266 (!supported_fx2[j].usb_manufacturer ||
267 !strcmp(manufacturer, supported_fx2[j].usb_manufacturer)) &&
268 (!supported_fx2[j].usb_manufacturer ||
269 !strcmp(product, supported_fx2[j].usb_product))) {
270 prof = &supported_fx2[j];
271 break;
272 }
273 }
274
275 /* Skip if the device was not found. */
276 if (!prof)
277 continue;
278
279 sdi = g_malloc0(sizeof(struct sr_dev_inst));
280 sdi->status = SR_ST_INITIALIZING;
281 sdi->vendor = g_strdup(prof->vendor);
282 sdi->model = g_strdup(prof->model);
283 sdi->version = g_strdup(prof->model_version);
284 sdi->driver = di;
285 sdi->serial_num = g_strdup(serial_num);
286 sdi->connection_id = g_strdup(connection_id);
287
288 /* Fill in channellist according to this device's profile. */
289 num_logic_channels = prof->dev_caps & DEV_CAPS_16BIT ? 16 : 8;
290 for (j = 0; j < num_logic_channels; j++)
291 sr_channel_new(sdi, j, SR_CHANNEL_LOGIC, TRUE,
292 channel_names[j]);
293
294 devc = fx2lafw_dev_new();
295 devc->profile = prof;
296 devc->sample_wide = (prof->dev_caps & DEV_CAPS_16BIT) != 0;
297 sdi->priv = devc;
298 drvc->instances = g_slist_append(drvc->instances, sdi);
299 devices = g_slist_append(devices, sdi);
300
301 if (strcmp(prof->model, "DSLogic")) {
302 devc->dslogic = FALSE;
303 devc->samplerates = samplerates;
304 devc->num_samplerates = ARRAY_SIZE(samplerates);
305 has_firmware = match_manuf_prod(devlist[i],
306 "sigrok", "fx2lafw");
307 } else {
308 devc->dslogic = TRUE;
309 devc->samplerates = dslogic_samplerates;
310 devc->num_samplerates = ARRAY_SIZE(dslogic_samplerates);
311 has_firmware = match_manuf_prod(devlist[i],
312 "DreamSourceLab", "DSLogic");
313 }
314
315 if (has_firmware) {
316 /* Already has the firmware, so fix the new address. */
317 sr_dbg("Found an fx2lafw device.");
318 sdi->status = SR_ST_INACTIVE;
319 sdi->inst_type = SR_INST_USB;
320 sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]),
321 libusb_get_device_address(devlist[i]), NULL);
322 } else {
323 if (ezusb_upload_firmware(devlist[i], USB_CONFIGURATION,
324 prof->firmware) == SR_OK)
325 /* Store when this device's FW was updated. */
326 devc->fw_updated = g_get_monotonic_time();
327 else
328 sr_err("Firmware upload failed for "
329 "device %d.%d (logical).",
330 libusb_get_bus_number(devlist[i]),
331 libusb_get_device_address(devlist[i]));
332 sdi->inst_type = SR_INST_USB;
333 sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]),
334 0xff, NULL);
335 }
336 }
337 libusb_free_device_list(devlist, 1);
338 g_slist_free_full(conn_devices, (GDestroyNotify)sr_usb_dev_inst_free);
339
340 return devices;
341}
342
343static GSList *dev_list(void)
344{
345 return ((struct drv_context *)(di->priv))->instances;
346}
347
348static int dev_open(struct sr_dev_inst *sdi)
349{
350 struct sr_usb_dev_inst *usb;
351 struct dev_context *devc;
352 int ret;
353 int64_t timediff_us, timediff_ms;
354
355 devc = sdi->priv;
356 usb = sdi->conn;
357
358 /*
359 * If the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS
360 * milliseconds for the FX2 to renumerate.
361 */
362 ret = SR_ERR;
363 if (devc->fw_updated > 0) {
364 sr_info("Waiting for device to reset.");
365 /* Takes >= 300ms for the FX2 to be gone from the USB bus. */
366 g_usleep(300 * 1000);
367 timediff_ms = 0;
368 while (timediff_ms < MAX_RENUM_DELAY_MS) {
369 if ((ret = fx2lafw_dev_open(sdi, di)) == SR_OK)
370 break;
371 g_usleep(100 * 1000);
372
373 timediff_us = g_get_monotonic_time() - devc->fw_updated;
374 timediff_ms = timediff_us / 1000;
375 sr_spew("Waited %" PRIi64 "ms.", timediff_ms);
376 }
377 if (ret != SR_OK) {
378 sr_err("Device failed to renumerate.");
379 return SR_ERR;
380 }
381 sr_info("Device came back after %" PRIi64 "ms.", timediff_ms);
382 } else {
383 sr_info("Firmware upload was not needed.");
384 ret = fx2lafw_dev_open(sdi, di);
385 }
386
387 if (ret != SR_OK) {
388 sr_err("Unable to open device.");
389 return SR_ERR;
390 }
391
392 ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE);
393 if (ret != 0) {
394 switch (ret) {
395 case LIBUSB_ERROR_BUSY:
396 sr_err("Unable to claim USB interface. Another "
397 "program or driver has already claimed it.");
398 break;
399 case LIBUSB_ERROR_NO_DEVICE:
400 sr_err("Device has been disconnected.");
401 break;
402 default:
403 sr_err("Unable to claim interface: %s.",
404 libusb_error_name(ret));
405 break;
406 }
407
408 return SR_ERR;
409 }
410
411 if (devc->dslogic) {
412 if ((ret = dslogic_fpga_firmware_upload(sdi,
413 DSLOGIC_FPGA_FIRMWARE)) != SR_OK)
414 return ret;
415 }
416
417 if (devc->cur_samplerate == 0) {
418 /* Samplerate hasn't been set; default to the slowest one. */
419 devc->cur_samplerate = devc->samplerates[0];
420 }
421
422 return SR_OK;
423}
424
425static int dev_close(struct sr_dev_inst *sdi)
426{
427 struct sr_usb_dev_inst *usb;
428
429 usb = sdi->conn;
430 if (usb->devhdl == NULL)
431 return SR_ERR;
432
433 sr_info("fx2lafw: Closing device on %d.%d (logical) / %s (physical) interface %d.",
434 usb->bus, usb->address, sdi->connection_id, USB_INTERFACE);
435 libusb_release_interface(usb->devhdl, USB_INTERFACE);
436 libusb_close(usb->devhdl);
437 usb->devhdl = NULL;
438 sdi->status = SR_ST_INACTIVE;
439
440 return SR_OK;
441}
442
443static int cleanup(void)
444{
445 int ret;
446 struct drv_context *drvc;
447
448 if (!(drvc = di->priv))
449 return SR_OK;
450
451 ret = std_dev_clear(di, NULL);
452
453 g_free(drvc);
454 di->priv = NULL;
455
456 return ret;
457}
458
459static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
460 const struct sr_channel_group *cg)
461{
462 struct dev_context *devc;
463 struct sr_usb_dev_inst *usb;
464 char str[128];
465
466 (void)cg;
467
468 if (!sdi)
469 return SR_ERR_ARG;
470
471 devc = sdi->priv;
472
473 switch (key) {
474 case SR_CONF_CONN:
475 if (!sdi->conn)
476 return SR_ERR_ARG;
477 usb = sdi->conn;
478 if (usb->address == 255)
479 /* Device still needs to re-enumerate after firmware
480 * upload, so we don't know its (future) address. */
481 return SR_ERR;
482 snprintf(str, 128, "%d.%d", usb->bus, usb->address);
483 *data = g_variant_new_string(str);
484 break;
485 case SR_CONF_LIMIT_SAMPLES:
486 *data = g_variant_new_uint64(devc->limit_samples);
487 break;
488 case SR_CONF_SAMPLERATE:
489 *data = g_variant_new_uint64(devc->cur_samplerate);
490 break;
491 case SR_CONF_CAPTURE_RATIO:
492 *data = g_variant_new_uint64(devc->capture_ratio);
493 break;
494 default:
495 return SR_ERR_NA;
496 }
497
498 return SR_OK;
499}
500
501static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
502 const struct sr_channel_group *cg)
503{
504 struct dev_context *devc;
505 uint64_t arg;
506 unsigned int i;
507 int ret;
508
509 (void)cg;
510
511 if (!sdi)
512 return SR_ERR_ARG;
513
514 if (sdi->status != SR_ST_ACTIVE)
515 return SR_ERR;
516
517 devc = sdi->priv;
518
519 ret = SR_OK;
520
521 switch (key) {
522 case SR_CONF_SAMPLERATE:
523 arg = g_variant_get_uint64(data);
524 for (i = 0; i < ARRAY_SIZE(samplerates); i++) {
525 if (samplerates[i] == arg) {
526 devc->cur_samplerate = arg;
527 break;
528 }
529 }
530 if (i == ARRAY_SIZE(samplerates))
531 ret = SR_ERR_ARG;
532 break;
533 case SR_CONF_LIMIT_SAMPLES:
534 devc->limit_samples = g_variant_get_uint64(data);
535 break;
536 case SR_CONF_CAPTURE_RATIO:
537 devc->capture_ratio = g_variant_get_uint64(data);
538 if (devc->capture_ratio > 100) {
539 devc->capture_ratio = 0;
540 ret = SR_ERR;
541 } else
542 ret = SR_OK;
543 break;
544 default:
545 ret = SR_ERR_NA;
546 }
547
548 return ret;
549}
550
551static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
552 const struct sr_channel_group *cg)
553{
554 struct dev_context *devc;
555 GVariant *gvar;
556 GVariantBuilder gvb;
557
558 (void)cg;
559
560 switch (key) {
561 case SR_CONF_SCAN_OPTIONS:
562 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
563 scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
564 break;
565 case SR_CONF_DEVICE_OPTIONS:
566 if (!sdi)
567 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
568 drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t));
569 else
570 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
571 devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
572 break;
573 case SR_CONF_SAMPLERATE:
574 if (!sdi->priv)
575 return SR_ERR_ARG;
576 devc = sdi->priv;
577 g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
578 gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), devc->samplerates,
579 devc->num_samplerates, sizeof(uint64_t));
580 g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar);
581 *data = g_variant_builder_end(&gvb);
582 break;
583 case SR_CONF_TRIGGER_MATCH:
584 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
585 soft_trigger_matches, ARRAY_SIZE(soft_trigger_matches),
586 sizeof(int32_t));
587 break;
588 default:
589 return SR_ERR_NA;
590 }
591
592 return SR_OK;
593}
594
595static int receive_data(int fd, int revents, void *cb_data)
596{
597 struct timeval tv;
598 struct drv_context *drvc;
599
600 (void)fd;
601 (void)revents;
602 (void)cb_data;
603
604 drvc = di->priv;
605
606 tv.tv_sec = tv.tv_usec = 0;
607 libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv);
608
609 return TRUE;
610}
611
612static int start_transfers(const struct sr_dev_inst *sdi)
613{
614 struct dev_context *devc;
615 struct sr_usb_dev_inst *usb;
616 struct sr_trigger *trigger;
617 struct libusb_transfer *transfer;
618 unsigned int i, num_transfers;
619 int endpoint, timeout, ret;
620 unsigned char *buf;
621 size_t size;
622
623 devc = sdi->priv;
624 usb = sdi->conn;
625
626 devc->sent_samples = 0;
627 devc->acq_aborted = FALSE;
628 devc->empty_transfer_count = 0;
629
630 if ((trigger = sr_session_trigger_get(sdi->session))) {
631 int pre_trigger_samples = 0;
632 if (devc->limit_samples > 0)
633 pre_trigger_samples = devc->capture_ratio * devc->limit_samples/100;
634 devc->stl = soft_trigger_logic_new(sdi, trigger, pre_trigger_samples);
635 if (devc->stl == NULL)
636 return SR_ERR_MALLOC;
637 devc->trigger_fired = FALSE;
638 } else
639 devc->trigger_fired = TRUE;
640
641 timeout = fx2lafw_get_timeout(devc);
642
643 num_transfers = fx2lafw_get_number_of_transfers(devc);
644 size = fx2lafw_get_buffer_size(devc);
645 devc->submitted_transfers = 0;
646
647 devc->transfers = g_try_malloc0(sizeof(*devc->transfers) * num_transfers);
648 if (!devc->transfers) {
649 sr_err("USB transfers malloc failed.");
650 return SR_ERR_MALLOC;
651 }
652
653 timeout = fx2lafw_get_timeout(devc);
654 endpoint = devc->dslogic ? 6 : 2;
655 devc->num_transfers = num_transfers;
656 for (i = 0; i < num_transfers; i++) {
657 if (!(buf = g_try_malloc(size))) {
658 sr_err("USB transfer buffer malloc failed.");
659 return SR_ERR_MALLOC;
660 }
661 transfer = libusb_alloc_transfer(0);
662 libusb_fill_bulk_transfer(transfer, usb->devhdl,
663 endpoint | LIBUSB_ENDPOINT_IN, buf, size,
664 fx2lafw_receive_transfer, (void *)sdi, timeout);
665 if ((ret = libusb_submit_transfer(transfer)) != 0) {
666 sr_err("Failed to submit transfer: %s.",
667 libusb_error_name(ret));
668 libusb_free_transfer(transfer);
669 g_free(buf);
670 fx2lafw_abort_acquisition(devc);
671 return SR_ERR;
672 }
673 devc->transfers[i] = transfer;
674 devc->submitted_transfers++;
675 }
676
677 /* Send header packet to the session bus. */
678 std_session_send_df_header(sdi, LOG_PREFIX);
679
680 return SR_OK;
681}
682
683static void dslogic_trigger_receive(struct libusb_transfer *transfer)
684{
685 const struct sr_dev_inst *sdi;
686 struct dslogic_trigger_pos *tpos;
687
688 sdi = transfer->user_data;
689
690 if (transfer->status == LIBUSB_TRANSFER_COMPLETED
691 && transfer->actual_length == sizeof(struct dslogic_trigger_pos)) {
692 tpos = (struct dslogic_trigger_pos *)transfer->buffer;
693 sr_dbg("tpos real_pos %.8x ram_saddr %.8x", tpos->real_pos, tpos->ram_saddr);
694 g_free(tpos);
695 start_transfers(sdi);
696 }
697
698 libusb_free_transfer(transfer);
699
700}
701
702static int dslogic_trigger_request(const struct sr_dev_inst *sdi)
703{
704 struct sr_usb_dev_inst *usb;
705 struct libusb_transfer *transfer;
706 struct dslogic_trigger_pos *tpos;
707 int ret;
708
709 usb = sdi->conn;
710
711 if ((ret = dslogic_stop_acquisition(sdi)) != SR_OK)
712 return ret;
713
714 if ((ret = dslogic_fpga_configure(sdi)) != SR_OK)
715 return ret;
716
717 if ((ret = dslogic_start_acquisition(sdi)) != SR_OK)
718 return ret;
719
720 sr_dbg("Getting trigger.");
721 tpos = g_malloc(sizeof(struct dslogic_trigger_pos));
722 transfer = libusb_alloc_transfer(0);
723 libusb_fill_bulk_transfer(transfer, usb->devhdl, 6 | LIBUSB_ENDPOINT_IN,
724 (unsigned char *)tpos, sizeof(struct dslogic_trigger_pos),
725 dslogic_trigger_receive, (void *)sdi, 0);
726 if ((ret = libusb_submit_transfer(transfer)) < 0) {
727 sr_err("Failed to request trigger: %s.", libusb_error_name(ret));
728 libusb_free_transfer(transfer);
729 g_free(tpos);
730 return SR_ERR;
731 }
732
733 return ret;
734}
735
736static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
737{
738 struct drv_context *drvc;
739 struct dev_context *devc;
740 int timeout, ret;
741
742 if (sdi->status != SR_ST_ACTIVE)
743 return SR_ERR_DEV_CLOSED;
744
745 drvc = di->priv;
746 devc = sdi->priv;
747
748 devc->ctx = drvc->sr_ctx;
749 devc->cb_data = cb_data;
750 devc->sent_samples = 0;
751 devc->empty_transfer_count = 0;
752 devc->acq_aborted = FALSE;
753
754 timeout = fx2lafw_get_timeout(devc);
755 usb_source_add(sdi->session, devc->ctx, timeout, receive_data, NULL);
756
757 if (devc->dslogic) {
758 dslogic_trigger_request(sdi);
759 }
760 else {
761 if ((ret = fx2lafw_command_start_acquisition(sdi)) != SR_OK)
762 return ret;
763 start_transfers(sdi);
764 }
765
766 return SR_OK;
767}
768
769static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
770{
771 (void)cb_data;
772
773 fx2lafw_abort_acquisition(sdi->priv);
774
775 return SR_OK;
776}
777
778SR_PRIV struct sr_dev_driver fx2lafw_driver_info = {
779 .name = "fx2lafw",
780 .longname = "fx2lafw (generic driver for FX2 based LAs)",
781 .api_version = 1,
782 .init = init,
783 .cleanup = cleanup,
784 .scan = scan,
785 .dev_list = dev_list,
786 .dev_clear = NULL,
787 .config_get = config_get,
788 .config_set = config_set,
789 .config_list = config_list,
790 .dev_open = dev_open,
791 .dev_close = dev_close,
792 .dev_acquisition_start = dev_acquisition_start,
793 .dev_acquisition_stop = dev_acquisition_stop,
794 .priv = NULL,
795};
Hardware access and backend lib