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Fix a few "value never read" scan-build warnings.
[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 <config.h>
22#include "protocol.h"
23#include "dslogic.h"
24
25static const struct fx2lafw_profile supported_fx2[] = {
26 /*
27 * CWAV USBee AX
28 * EE Electronics ESLA201A
29 * ARMFLY AX-Pro
30 */
31 { 0x08a9, 0x0014, "CWAV", "USBee AX", NULL,
32 FIRMWARE_DIR "/fx2lafw-cwav-usbeeax.fw",
33 0, NULL, NULL},
34 /*
35 * CWAV USBee DX
36 * XZL-Studio DX
37 */
38 { 0x08a9, 0x0015, "CWAV", "USBee DX", NULL,
39 FIRMWARE_DIR "/fx2lafw-cwav-usbeedx.fw",
40 DEV_CAPS_16BIT, NULL, NULL },
41
42 /*
43 * CWAV USBee SX
44 */
45 { 0x08a9, 0x0009, "CWAV", "USBee SX", NULL,
46 FIRMWARE_DIR "/fx2lafw-cwav-usbeesx.fw",
47 0, NULL, NULL},
48
49 /* DreamSourceLab DSLogic (before FW upload) */
50 { 0x2a0e, 0x0001, "DreamSourceLab", "DSLogic", NULL,
51 FIRMWARE_DIR "/dreamsourcelab-dslogic-fx2.fw",
52 DEV_CAPS_16BIT, NULL, NULL},
53 /* DreamSourceLab DSLogic (after FW upload) */
54 { 0x2a0e, 0x0001, "DreamSourceLab", "DSLogic", NULL,
55 FIRMWARE_DIR "/dreamsourcelab-dslogic-fx2.fw",
56 DEV_CAPS_16BIT, "DreamSourceLab", "DSLogic"},
57
58 /* DreamSourceLab DSCope (before FW upload) */
59 { 0x2a0e, 0x0002, "DreamSourceLab", "DSCope", NULL,
60 FIRMWARE_DIR "/dreamsourcelab-dscope-fx2.fw",
61 DEV_CAPS_16BIT, NULL, NULL},
62 /* DreamSourceLab DSCope (after FW upload) */
63 { 0x2a0e, 0x0002, "DreamSourceLab", "DSCope", NULL,
64 FIRMWARE_DIR "/dreamsourcelab-dscope-fx2.fw",
65 DEV_CAPS_16BIT, "DreamSourceLab", "DSCope"},
66
67 /* DreamSourceLab DSLogic Pro (before FW upload) */
68 { 0x2a0e, 0x0003, "DreamSourceLab", "DSLogic Pro", NULL,
69 FIRMWARE_DIR "/dreamsourcelab-dslogic-pro-fx2.fw",
70 DEV_CAPS_16BIT, NULL, NULL},
71 /* DreamSourceLab DSLogic Pro (after FW upload) */
72 { 0x2a0e, 0x0003, "DreamSourceLab", "DSLogic Pro", NULL,
73 FIRMWARE_DIR "/dreamsourcelab-dslogic-pro-fx2.fw",
74 DEV_CAPS_16BIT, "DreamSourceLab", "DSLogic"},
75
76 /*
77 * Saleae Logic
78 * EE Electronics ESLA100
79 * Robomotic MiniLogic
80 * Robomotic BugLogic 3
81 */
82 { 0x0925, 0x3881, "Saleae", "Logic", NULL,
83 FIRMWARE_DIR "/fx2lafw-saleae-logic.fw",
84 0, NULL, NULL},
85
86 /*
87 * Default Cypress FX2 without EEPROM, e.g.:
88 * Lcsoft Mini Board
89 * Braintechnology USB Interface V2.x
90 */
91 { 0x04B4, 0x8613, "Cypress", "FX2", NULL,
92 FIRMWARE_DIR "/fx2lafw-cypress-fx2.fw",
93 DEV_CAPS_16BIT, NULL, NULL },
94
95 /*
96 * Braintechnology USB-LPS
97 */
98 { 0x16d0, 0x0498, "Braintechnology", "USB-LPS", NULL,
99 FIRMWARE_DIR "/fx2lafw-braintechnology-usb-lps.fw",
100 DEV_CAPS_16BIT, NULL, NULL },
101
102 { 0, 0, 0, 0, 0, 0, 0, 0, 0 }
103};
104
105static const uint32_t drvopts[] = {
106 SR_CONF_LOGIC_ANALYZER,
107};
108
109static const uint32_t scanopts[] = {
110 SR_CONF_CONN,
111};
112
113static const uint32_t devopts[] = {
114 SR_CONF_CONTINUOUS | SR_CONF_SET,
115 SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET,
116 SR_CONF_CONN | SR_CONF_GET,
117 SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
118 SR_CONF_TRIGGER_MATCH | SR_CONF_LIST,
119 SR_CONF_CAPTURE_RATIO | SR_CONF_GET | SR_CONF_SET,
120};
121
122static const char *channel_names[] = {
123 "0", "1", "2", "3", "4", "5", "6", "7",
124 "8", "9", "10", "11", "12", "13", "14", "15",
125};
126
127static const int32_t soft_trigger_matches[] = {
128 SR_TRIGGER_ZERO,
129 SR_TRIGGER_ONE,
130 SR_TRIGGER_RISING,
131 SR_TRIGGER_FALLING,
132 SR_TRIGGER_EDGE,
133};
134
135static const uint64_t samplerates[] = {
136 SR_KHZ(20),
137 SR_KHZ(25),
138 SR_KHZ(50),
139 SR_KHZ(100),
140 SR_KHZ(200),
141 SR_KHZ(250),
142 SR_KHZ(500),
143 SR_MHZ(1),
144 SR_MHZ(2),
145 SR_MHZ(3),
146 SR_MHZ(4),
147 SR_MHZ(6),
148 SR_MHZ(8),
149 SR_MHZ(12),
150 SR_MHZ(16),
151 SR_MHZ(24),
152};
153
154static const uint64_t dslogic_samplerates[] = {
155 SR_KHZ(10),
156 SR_KHZ(20),
157 SR_KHZ(50),
158 SR_KHZ(100),
159 SR_KHZ(200),
160 SR_KHZ(500),
161 SR_MHZ(1),
162 SR_MHZ(2),
163 SR_MHZ(5),
164 SR_MHZ(10),
165 SR_MHZ(20),
166 SR_MHZ(25),
167 SR_MHZ(50),
168 SR_MHZ(100),
169 SR_MHZ(200),
170 SR_MHZ(400),
171};
172
173SR_PRIV struct sr_dev_driver fx2lafw_driver_info;
174
175static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
176{
177 return std_init(sr_ctx, di, LOG_PREFIX);
178}
179
180static GSList *scan(struct sr_dev_driver *di, GSList *options)
181{
182 struct drv_context *drvc;
183 struct dev_context *devc;
184 struct sr_dev_inst *sdi;
185 struct sr_usb_dev_inst *usb;
186 struct sr_config *src;
187 const struct fx2lafw_profile *prof;
188 GSList *l, *devices, *conn_devices;
189 gboolean has_firmware;
190 struct libusb_device_descriptor des;
191 libusb_device **devlist;
192 struct libusb_device_handle *hdl;
193 int num_logic_channels, ret, i, j;
194 const char *conn;
195 char manufacturer[64], product[64], serial_num[64], connection_id[64];
196
197 drvc = di->context;
198
199 conn = NULL;
200 for (l = options; l; l = l->next) {
201 src = l->data;
202 switch (src->key) {
203 case SR_CONF_CONN:
204 conn = g_variant_get_string(src->data, NULL);
205 break;
206 }
207 }
208 if (conn)
209 conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn);
210 else
211 conn_devices = NULL;
212
213 /* Find all fx2lafw compatible devices and upload firmware to them. */
214 devices = NULL;
215 libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
216 for (i = 0; devlist[i]; i++) {
217 if (conn) {
218 usb = NULL;
219 for (l = conn_devices; l; l = l->next) {
220 usb = l->data;
221 if (usb->bus == libusb_get_bus_number(devlist[i])
222 && usb->address == libusb_get_device_address(devlist[i]))
223 break;
224 }
225 if (!l)
226 /* This device matched none of the ones that
227 * matched the conn specification. */
228 continue;
229 }
230
231 libusb_get_device_descriptor( devlist[i], &des);
232
233 if ((ret = libusb_open(devlist[i], &hdl)) < 0)
234 continue;
235
236 if (des.iManufacturer == 0) {
237 manufacturer[0] = '\0';
238 } else if ((ret = libusb_get_string_descriptor_ascii(hdl,
239 des.iManufacturer, (unsigned char *) manufacturer,
240 sizeof(manufacturer))) < 0) {
241 sr_warn("Failed to get manufacturer string descriptor: %s.",
242 libusb_error_name(ret));
243 continue;
244 }
245
246 if (des.iProduct == 0) {
247 product[0] = '\0';
248 } else if ((ret = libusb_get_string_descriptor_ascii(hdl,
249 des.iProduct, (unsigned char *) product,
250 sizeof(product))) < 0) {
251 sr_warn("Failed to get product string descriptor: %s.",
252 libusb_error_name(ret));
253 continue;
254 }
255
256 if (des.iSerialNumber == 0) {
257 serial_num[0] = '\0';
258 } else if ((ret = libusb_get_string_descriptor_ascii(hdl,
259 des.iSerialNumber, (unsigned char *) serial_num,
260 sizeof(serial_num))) < 0) {
261 sr_warn("Failed to get serial number string descriptor: %s.",
262 libusb_error_name(ret));
263 continue;
264 }
265
266 usb_get_port_path(devlist[i], connection_id, sizeof(connection_id));
267
268 libusb_close(hdl);
269
270 prof = NULL;
271 for (j = 0; supported_fx2[j].vid; j++) {
272 if (des.idVendor == supported_fx2[j].vid &&
273 des.idProduct == supported_fx2[j].pid &&
274 (!supported_fx2[j].usb_manufacturer ||
275 !strcmp(manufacturer, supported_fx2[j].usb_manufacturer)) &&
276 (!supported_fx2[j].usb_manufacturer ||
277 !strcmp(product, supported_fx2[j].usb_product))) {
278 prof = &supported_fx2[j];
279 break;
280 }
281 }
282
283 /* Skip if the device was not found. */
284 if (!prof)
285 continue;
286
287 sdi = g_malloc0(sizeof(struct sr_dev_inst));
288 sdi->status = SR_ST_INITIALIZING;
289 sdi->vendor = g_strdup(prof->vendor);
290 sdi->model = g_strdup(prof->model);
291 sdi->version = g_strdup(prof->model_version);
292 sdi->driver = di;
293 sdi->serial_num = g_strdup(serial_num);
294 sdi->connection_id = g_strdup(connection_id);
295
296 /* Fill in channellist according to this device's profile. */
297 num_logic_channels = prof->dev_caps & DEV_CAPS_16BIT ? 16 : 8;
298 for (j = 0; j < num_logic_channels; j++)
299 sr_channel_new(sdi, j, SR_CHANNEL_LOGIC, TRUE,
300 channel_names[j]);
301
302 devc = fx2lafw_dev_new();
303 devc->profile = prof;
304 devc->sample_wide = (prof->dev_caps & DEV_CAPS_16BIT) != 0;
305 sdi->priv = devc;
306 drvc->instances = g_slist_append(drvc->instances, sdi);
307 devices = g_slist_append(devices, sdi);
308
309 if (!strcmp(prof->model, "DSLogic")
310 || !strcmp(prof->model, "DSLogic Pro")
311 || !strcmp(prof->model, "DSCope")) {
312 devc->dslogic = TRUE;
313 devc->samplerates = dslogic_samplerates;
314 devc->num_samplerates = ARRAY_SIZE(dslogic_samplerates);
315 has_firmware = match_manuf_prod(devlist[i], "DreamSourceLab", "DSLogic")
316 || match_manuf_prod(devlist[i], "DreamSourceLab", "DSCope");
317 } else {
318 devc->dslogic = FALSE;
319 devc->samplerates = samplerates;
320 devc->num_samplerates = ARRAY_SIZE(samplerates);
321 has_firmware = match_manuf_prod(devlist[i],
322 "sigrok", "fx2lafw");
323 }
324
325 if (has_firmware) {
326 /* Already has the firmware, so fix the new address. */
327 sr_dbg("Found an fx2lafw device.");
328 sdi->status = SR_ST_INACTIVE;
329 sdi->inst_type = SR_INST_USB;
330 sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]),
331 libusb_get_device_address(devlist[i]), NULL);
332 } else {
333 if (ezusb_upload_firmware(devlist[i], USB_CONFIGURATION,
334 prof->firmware) == SR_OK)
335 /* Store when this device's FW was updated. */
336 devc->fw_updated = g_get_monotonic_time();
337 else
338 sr_err("Firmware upload failed for "
339 "device %d.%d (logical).",
340 libusb_get_bus_number(devlist[i]),
341 libusb_get_device_address(devlist[i]));
342 sdi->inst_type = SR_INST_USB;
343 sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]),
344 0xff, NULL);
345 }
346 }
347 libusb_free_device_list(devlist, 1);
348 g_slist_free_full(conn_devices, (GDestroyNotify)sr_usb_dev_inst_free);
349
350 return devices;
351}
352
353static GSList *dev_list(const struct sr_dev_driver *di)
354{
355 return ((struct drv_context *)(di->context))->instances;
356}
357
358static int dev_open(struct sr_dev_inst *sdi)
359{
360 struct sr_dev_driver *di = sdi->driver;
361 struct sr_usb_dev_inst *usb;
362 struct dev_context *devc;
363 char *fpga_firmware = NULL;
364 int ret;
365 int64_t timediff_us, timediff_ms;
366
367 devc = sdi->priv;
368 usb = sdi->conn;
369
370 /*
371 * If the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS
372 * milliseconds for the FX2 to renumerate.
373 */
374 ret = SR_ERR;
375 if (devc->fw_updated > 0) {
376 sr_info("Waiting for device to reset.");
377 /* Takes >= 300ms for the FX2 to be gone from the USB bus. */
378 g_usleep(300 * 1000);
379 timediff_ms = 0;
380 while (timediff_ms < MAX_RENUM_DELAY_MS) {
381 if ((ret = fx2lafw_dev_open(sdi, di)) == SR_OK)
382 break;
383 g_usleep(100 * 1000);
384
385 timediff_us = g_get_monotonic_time() - devc->fw_updated;
386 timediff_ms = timediff_us / 1000;
387 sr_spew("Waited %" PRIi64 "ms.", timediff_ms);
388 }
389 if (ret != SR_OK) {
390 sr_err("Device failed to renumerate.");
391 return SR_ERR;
392 }
393 sr_info("Device came back after %" PRIi64 "ms.", timediff_ms);
394 } else {
395 sr_info("Firmware upload was not needed.");
396 ret = fx2lafw_dev_open(sdi, di);
397 }
398
399 if (ret != SR_OK) {
400 sr_err("Unable to open device.");
401 return SR_ERR;
402 }
403
404 ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE);
405 if (ret != 0) {
406 switch (ret) {
407 case LIBUSB_ERROR_BUSY:
408 sr_err("Unable to claim USB interface. Another "
409 "program or driver has already claimed it.");
410 break;
411 case LIBUSB_ERROR_NO_DEVICE:
412 sr_err("Device has been disconnected.");
413 break;
414 default:
415 sr_err("Unable to claim interface: %s.",
416 libusb_error_name(ret));
417 break;
418 }
419
420 return SR_ERR;
421 }
422
423 if (devc->dslogic) {
424 if (!strcmp(devc->profile->model, "DSLogic")) {
425 fpga_firmware = DSLOGIC_FPGA_FIRMWARE;
426 } else if (!strcmp(devc->profile->model, "DSLogic Pro")) {
427 fpga_firmware = DSLOGIC_PRO_FPGA_FIRMWARE;
428 } else if (!strcmp(devc->profile->model, "DSCope")) {
429 fpga_firmware = DSCOPE_FPGA_FIRMWARE;
430 }
431
432 if ((ret = dslogic_fpga_firmware_upload(sdi,
433 fpga_firmware)) != SR_OK)
434 return ret;
435 }
436
437 if (devc->cur_samplerate == 0) {
438 /* Samplerate hasn't been set; default to the slowest one. */
439 devc->cur_samplerate = devc->samplerates[0];
440 }
441
442 return SR_OK;
443}
444
445static int dev_close(struct sr_dev_inst *sdi)
446{
447 struct sr_usb_dev_inst *usb;
448
449 usb = sdi->conn;
450 if (!usb->devhdl)
451 return SR_ERR;
452
453 sr_info("fx2lafw: Closing device on %d.%d (logical) / %s (physical) interface %d.",
454 usb->bus, usb->address, sdi->connection_id, USB_INTERFACE);
455 libusb_release_interface(usb->devhdl, USB_INTERFACE);
456 libusb_close(usb->devhdl);
457 usb->devhdl = NULL;
458 sdi->status = SR_ST_INACTIVE;
459
460 return SR_OK;
461}
462
463static int cleanup(const struct sr_dev_driver *di)
464{
465 int ret;
466 struct drv_context *drvc;
467
468 if (!(drvc = di->context))
469 return SR_OK;
470
471 ret = std_dev_clear(di, NULL);
472
473 g_free(drvc);
474
475 return ret;
476}
477
478static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
479 const struct sr_channel_group *cg)
480{
481 struct dev_context *devc;
482 struct sr_usb_dev_inst *usb;
483 char str[128];
484
485 (void)cg;
486
487 if (!sdi)
488 return SR_ERR_ARG;
489
490 devc = sdi->priv;
491
492 switch (key) {
493 case SR_CONF_CONN:
494 if (!sdi->conn)
495 return SR_ERR_ARG;
496 usb = sdi->conn;
497 if (usb->address == 255)
498 /* Device still needs to re-enumerate after firmware
499 * upload, so we don't know its (future) address. */
500 return SR_ERR;
501 snprintf(str, 128, "%d.%d", usb->bus, usb->address);
502 *data = g_variant_new_string(str);
503 break;
504 case SR_CONF_LIMIT_SAMPLES:
505 *data = g_variant_new_uint64(devc->limit_samples);
506 break;
507 case SR_CONF_SAMPLERATE:
508 *data = g_variant_new_uint64(devc->cur_samplerate);
509 break;
510 case SR_CONF_CAPTURE_RATIO:
511 *data = g_variant_new_uint64(devc->capture_ratio);
512 break;
513 default:
514 return SR_ERR_NA;
515 }
516
517 return SR_OK;
518}
519
520static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
521 const struct sr_channel_group *cg)
522{
523 struct dev_context *devc;
524 uint64_t arg;
525 int i, ret;
526
527 (void)cg;
528
529 if (!sdi)
530 return SR_ERR_ARG;
531
532 if (sdi->status != SR_ST_ACTIVE)
533 return SR_ERR;
534
535 devc = sdi->priv;
536
537 ret = SR_OK;
538
539 switch (key) {
540 case SR_CONF_SAMPLERATE:
541 arg = g_variant_get_uint64(data);
542 for (i = 0; i < devc->num_samplerates; i++) {
543 if (devc->samplerates[i] == arg) {
544 devc->cur_samplerate = arg;
545 break;
546 }
547 }
548 if (i == devc->num_samplerates)
549 ret = SR_ERR_ARG;
550 break;
551 case SR_CONF_LIMIT_SAMPLES:
552 devc->limit_samples = g_variant_get_uint64(data);
553 break;
554 case SR_CONF_CAPTURE_RATIO:
555 devc->capture_ratio = g_variant_get_uint64(data);
556 if (devc->capture_ratio > 100) {
557 devc->capture_ratio = 0;
558 ret = SR_ERR;
559 } else
560 ret = SR_OK;
561 break;
562 default:
563 ret = SR_ERR_NA;
564 }
565
566 return ret;
567}
568
569static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
570 const struct sr_channel_group *cg)
571{
572 struct dev_context *devc;
573 GVariant *gvar;
574 GVariantBuilder gvb;
575
576 (void)cg;
577
578 switch (key) {
579 case SR_CONF_SCAN_OPTIONS:
580 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
581 scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
582 break;
583 case SR_CONF_DEVICE_OPTIONS:
584 if (!sdi)
585 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
586 drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t));
587 else
588 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
589 devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
590 break;
591 case SR_CONF_SAMPLERATE:
592 if (!sdi->priv)
593 return SR_ERR_ARG;
594 devc = sdi->priv;
595 g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
596 gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), devc->samplerates,
597 devc->num_samplerates, sizeof(uint64_t));
598 g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar);
599 *data = g_variant_builder_end(&gvb);
600 break;
601 case SR_CONF_TRIGGER_MATCH:
602 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
603 soft_trigger_matches, ARRAY_SIZE(soft_trigger_matches),
604 sizeof(int32_t));
605 break;
606 default:
607 return SR_ERR_NA;
608 }
609
610 return SR_OK;
611}
612
613static int receive_data(int fd, int revents, void *cb_data)
614{
615 struct timeval tv;
616 struct drv_context *drvc;
617
618 (void)fd;
619 (void)revents;
620
621 drvc = (struct drv_context *)cb_data;
622
623 tv.tv_sec = tv.tv_usec = 0;
624 libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv);
625
626 return TRUE;
627}
628
629static int start_transfers(const struct sr_dev_inst *sdi)
630{
631 struct dev_context *devc;
632 struct sr_usb_dev_inst *usb;
633 struct sr_trigger *trigger;
634 struct libusb_transfer *transfer;
635 unsigned int i, num_transfers;
636 int endpoint, timeout, ret;
637 unsigned char *buf;
638 size_t size;
639
640 devc = sdi->priv;
641 usb = sdi->conn;
642
643 devc->sent_samples = 0;
644 devc->acq_aborted = FALSE;
645 devc->empty_transfer_count = 0;
646
647 if ((trigger = sr_session_trigger_get(sdi->session))) {
648 int pre_trigger_samples = 0;
649 if (devc->limit_samples > 0)
650 pre_trigger_samples = devc->capture_ratio * devc->limit_samples/100;
651 devc->stl = soft_trigger_logic_new(sdi, trigger, pre_trigger_samples);
652 if (!devc->stl)
653 return SR_ERR_MALLOC;
654 devc->trigger_fired = FALSE;
655 } else
656 devc->trigger_fired = TRUE;
657
658 num_transfers = fx2lafw_get_number_of_transfers(devc);
659 size = fx2lafw_get_buffer_size(devc);
660 devc->submitted_transfers = 0;
661
662 devc->transfers = g_try_malloc0(sizeof(*devc->transfers) * num_transfers);
663 if (!devc->transfers) {
664 sr_err("USB transfers malloc failed.");
665 return SR_ERR_MALLOC;
666 }
667
668 timeout = fx2lafw_get_timeout(devc);
669 endpoint = devc->dslogic ? 6 : 2;
670 devc->num_transfers = num_transfers;
671 for (i = 0; i < num_transfers; i++) {
672 if (!(buf = g_try_malloc(size))) {
673 sr_err("USB transfer buffer malloc failed.");
674 return SR_ERR_MALLOC;
675 }
676 transfer = libusb_alloc_transfer(0);
677 libusb_fill_bulk_transfer(transfer, usb->devhdl,
678 endpoint | LIBUSB_ENDPOINT_IN, buf, size,
679 fx2lafw_receive_transfer, (void *)sdi, timeout);
680 if ((ret = libusb_submit_transfer(transfer)) != 0) {
681 sr_err("Failed to submit transfer: %s.",
682 libusb_error_name(ret));
683 libusb_free_transfer(transfer);
684 g_free(buf);
685 fx2lafw_abort_acquisition(devc);
686 return SR_ERR;
687 }
688 devc->transfers[i] = transfer;
689 devc->submitted_transfers++;
690 }
691
692 /* Send header packet to the session bus. */
693 std_session_send_df_header(sdi, LOG_PREFIX);
694
695 return SR_OK;
696}
697
698static void LIBUSB_CALL dslogic_trigger_receive(struct libusb_transfer *transfer)
699{
700 const struct sr_dev_inst *sdi;
701 struct dslogic_trigger_pos *tpos;
702
703 sdi = transfer->user_data;
704
705 if (transfer->status == LIBUSB_TRANSFER_COMPLETED
706 && transfer->actual_length == sizeof(struct dslogic_trigger_pos)) {
707 tpos = (struct dslogic_trigger_pos *)transfer->buffer;
708 sr_dbg("tpos real_pos %.8x ram_saddr %.8x", tpos->real_pos, tpos->ram_saddr);
709 g_free(tpos);
710 start_transfers(sdi);
711 }
712
713 libusb_free_transfer(transfer);
714
715}
716
717static int dslogic_trigger_request(const struct sr_dev_inst *sdi)
718{
719 struct sr_usb_dev_inst *usb;
720 struct libusb_transfer *transfer;
721 struct dslogic_trigger_pos *tpos;
722 int ret;
723
724 usb = sdi->conn;
725
726 if ((ret = dslogic_stop_acquisition(sdi)) != SR_OK)
727 return ret;
728
729 if ((ret = dslogic_fpga_configure(sdi)) != SR_OK)
730 return ret;
731
732 if ((ret = dslogic_start_acquisition(sdi)) != SR_OK)
733 return ret;
734
735 sr_dbg("Getting trigger.");
736 tpos = g_malloc(sizeof(struct dslogic_trigger_pos));
737 transfer = libusb_alloc_transfer(0);
738 libusb_fill_bulk_transfer(transfer, usb->devhdl, 6 | LIBUSB_ENDPOINT_IN,
739 (unsigned char *)tpos, sizeof(struct dslogic_trigger_pos),
740 dslogic_trigger_receive, (void *)sdi, 0);
741 if ((ret = libusb_submit_transfer(transfer)) < 0) {
742 sr_err("Failed to request trigger: %s.", libusb_error_name(ret));
743 libusb_free_transfer(transfer);
744 g_free(tpos);
745 return SR_ERR;
746 }
747
748 return ret;
749}
750
751static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
752{
753 struct sr_dev_driver *di;
754 struct drv_context *drvc;
755 struct dev_context *devc;
756 int timeout, ret;
757
758 if (sdi->status != SR_ST_ACTIVE)
759 return SR_ERR_DEV_CLOSED;
760
761 di = sdi->driver;
762 drvc = di->context;
763 devc = sdi->priv;
764
765 devc->ctx = drvc->sr_ctx;
766 devc->cb_data = cb_data;
767 devc->sent_samples = 0;
768 devc->empty_transfer_count = 0;
769 devc->acq_aborted = FALSE;
770
771 timeout = fx2lafw_get_timeout(devc);
772 usb_source_add(sdi->session, devc->ctx, timeout, receive_data, drvc);
773
774 if (devc->dslogic) {
775 dslogic_trigger_request(sdi);
776 } else {
777 start_transfers(sdi);
778 if ((ret = fx2lafw_command_start_acquisition(sdi)) != SR_OK) {
779 fx2lafw_abort_acquisition(devc);
780 return ret;
781 }
782 }
783
784 return SR_OK;
785}
786
787static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
788{
789 (void)cb_data;
790
791 fx2lafw_abort_acquisition(sdi->priv);
792
793 return SR_OK;
794}
795
796SR_PRIV struct sr_dev_driver fx2lafw_driver_info = {
797 .name = "fx2lafw",
798 .longname = "fx2lafw (generic driver for FX2 based LAs)",
799 .api_version = 1,
800 .init = init,
801 .cleanup = cleanup,
802 .scan = scan,
803 .dev_list = dev_list,
804 .dev_clear = NULL,
805 .config_get = config_get,
806 .config_set = config_set,
807 .config_list = config_list,
808 .dev_open = dev_open,
809 .dev_close = dev_close,
810 .dev_acquisition_start = dev_acquisition_start,
811 .dev_acquisition_stop = dev_acquisition_stop,
812 .context = NULL,
813};
Hardware access and backend lib