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fx2lafw: Fix segfault wrt libusb_detach_kernel_driver().
[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 /* DreamSourceLab DSLogic (before FW upload) */
49 { 0x2a0e, 0x0001, "DreamSourceLab", "DSLogic", NULL,
50 FIRMWARE_DIR "/dreamsourcelab-dslogic-fx2.fw",
51 DEV_CAPS_16BIT, NULL, NULL},
52 /* DreamSourceLab DSLogic (after FW upload) */
53 { 0x2a0e, 0x0001, "DreamSourceLab", "DSLogic", NULL,
54 FIRMWARE_DIR "/dreamsourcelab-dslogic-fx2.fw",
55 DEV_CAPS_16BIT, "DreamSourceLab", "DSLogic"},
56
57 /* DreamSourceLab DSCope (before FW upload) */
58 { 0x2a0e, 0x0002, "DreamSourceLab", "DSCope", NULL,
59 FIRMWARE_DIR "/dreamsourcelab-dscope-fx2.fw",
60 DEV_CAPS_16BIT, NULL, NULL},
61 /* DreamSourceLab DSCope (after FW upload) */
62 { 0x2a0e, 0x0002, "DreamSourceLab", "DSCope", NULL,
63 FIRMWARE_DIR "/dreamsourcelab-dscope-fx2.fw",
64 DEV_CAPS_16BIT, "DreamSourceLab", "DSCope"},
65
66 /* DreamSourceLab DSLogic Pro (before FW upload) */
67 { 0x2a0e, 0x0003, "DreamSourceLab", "DSLogic Pro", NULL,
68 FIRMWARE_DIR "/dreamsourcelab-dslogic-pro-fx2.fw",
69 DEV_CAPS_16BIT, NULL, NULL},
70 /* DreamSourceLab DSLogic Pro (after FW upload) */
71 { 0x2a0e, 0x0003, "DreamSourceLab", "DSLogic Pro", NULL,
72 FIRMWARE_DIR "/dreamsourcelab-dslogic-pro-fx2.fw",
73 DEV_CAPS_16BIT, "DreamSourceLab", "DSLogic"},
74
75 /*
76 * Saleae Logic
77 * EE Electronics ESLA100
78 * Robomotic MiniLogic
79 * Robomotic BugLogic 3
80 */
81 { 0x0925, 0x3881, "Saleae", "Logic", NULL,
82 FIRMWARE_DIR "/fx2lafw-saleae-logic.fw",
83 0, NULL, NULL},
84
85 /*
86 * Default Cypress FX2 without EEPROM, e.g.:
87 * Lcsoft Mini Board
88 * Braintechnology USB Interface V2.x
89 */
90 { 0x04B4, 0x8613, "Cypress", "FX2", NULL,
91 FIRMWARE_DIR "/fx2lafw-cypress-fx2.fw",
92 DEV_CAPS_16BIT, NULL, NULL },
93
94 /*
95 * Braintechnology USB-LPS
96 */
97 { 0x16d0, 0x0498, "Braintechnology", "USB-LPS", NULL,
98 FIRMWARE_DIR "/fx2lafw-braintechnology-usb-lps.fw",
99 DEV_CAPS_16BIT, NULL, NULL },
100
101 { 0, 0, 0, 0, 0, 0, 0, 0, 0 }
102};
103
104static const uint32_t drvopts[] = {
105 SR_CONF_LOGIC_ANALYZER,
106};
107
108static const uint32_t scanopts[] = {
109 SR_CONF_CONN,
110};
111
112static const uint32_t devopts[] = {
113 SR_CONF_CONTINUOUS | SR_CONF_SET,
114 SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET,
115 SR_CONF_CONN | SR_CONF_GET,
116 SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
117 SR_CONF_TRIGGER_MATCH | SR_CONF_LIST,
118 SR_CONF_CAPTURE_RATIO | SR_CONF_GET | SR_CONF_SET,
119};
120
121static const char *channel_names[] = {
122 "0", "1", "2", "3", "4", "5", "6", "7",
123 "8", "9", "10", "11", "12", "13", "14", "15",
124};
125
126static const int32_t soft_trigger_matches[] = {
127 SR_TRIGGER_ZERO,
128 SR_TRIGGER_ONE,
129 SR_TRIGGER_RISING,
130 SR_TRIGGER_FALLING,
131 SR_TRIGGER_EDGE,
132};
133
134static const uint64_t samplerates[] = {
135 SR_KHZ(20),
136 SR_KHZ(25),
137 SR_KHZ(50),
138 SR_KHZ(100),
139 SR_KHZ(200),
140 SR_KHZ(250),
141 SR_KHZ(500),
142 SR_MHZ(1),
143 SR_MHZ(2),
144 SR_MHZ(3),
145 SR_MHZ(4),
146 SR_MHZ(6),
147 SR_MHZ(8),
148 SR_MHZ(12),
149 SR_MHZ(16),
150 SR_MHZ(24),
151};
152
153static const uint64_t dslogic_samplerates[] = {
154 SR_KHZ(10),
155 SR_KHZ(20),
156 SR_KHZ(50),
157 SR_KHZ(100),
158 SR_KHZ(200),
159 SR_KHZ(500),
160 SR_MHZ(1),
161 SR_MHZ(2),
162 SR_MHZ(5),
163 SR_MHZ(10),
164 SR_MHZ(20),
165 SR_MHZ(25),
166 SR_MHZ(50),
167 SR_MHZ(100),
168 SR_MHZ(200),
169 SR_MHZ(400),
170};
171
172SR_PRIV struct sr_dev_driver fx2lafw_driver_info;
173
174static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
175{
176 return std_init(sr_ctx, di, LOG_PREFIX);
177}
178
179static GSList *scan(struct sr_dev_driver *di, GSList *options)
180{
181 struct drv_context *drvc;
182 struct dev_context *devc;
183 struct sr_dev_inst *sdi;
184 struct sr_usb_dev_inst *usb;
185 struct sr_config *src;
186 const struct fx2lafw_profile *prof;
187 GSList *l, *devices, *conn_devices;
188 gboolean has_firmware;
189 struct libusb_device_descriptor des;
190 libusb_device **devlist;
191 struct libusb_device_handle *hdl;
192 int num_logic_channels, ret, i, j;
193 const char *conn;
194 char manufacturer[64], product[64], serial_num[64], connection_id[64];
195
196 drvc = di->priv;
197
198 conn = NULL;
199 for (l = options; l; l = l->next) {
200 src = l->data;
201 switch (src->key) {
202 case SR_CONF_CONN:
203 conn = g_variant_get_string(src->data, NULL);
204 break;
205 }
206 }
207 if (conn)
208 conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn);
209 else
210 conn_devices = NULL;
211
212 /* Find all fx2lafw compatible devices and upload firmware to them. */
213 devices = NULL;
214 libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
215 for (i = 0; devlist[i]; i++) {
216 if (conn) {
217 usb = NULL;
218 for (l = conn_devices; l; l = l->next) {
219 usb = l->data;
220 if (usb->bus == libusb_get_bus_number(devlist[i])
221 && usb->address == libusb_get_device_address(devlist[i]))
222 break;
223 }
224 if (!l)
225 /* This device matched none of the ones that
226 * matched the conn specification. */
227 continue;
228 }
229
230 if ((ret = libusb_get_device_descriptor( devlist[i], &des)) != 0) {
231 sr_warn("Failed to get device descriptor: %s.",
232 libusb_error_name(ret));
233 continue;
234 }
235
236 if ((ret = libusb_open(devlist[i], &hdl)) < 0)
237 continue;
238
239 if (des.iManufacturer == 0) {
240 manufacturer[0] = '\0';
241 } else if ((ret = libusb_get_string_descriptor_ascii(hdl,
242 des.iManufacturer, (unsigned char *) manufacturer,
243 sizeof(manufacturer))) < 0) {
244 sr_warn("Failed to get manufacturer string descriptor: %s.",
245 libusb_error_name(ret));
246 continue;
247 }
248
249 if (des.iProduct == 0) {
250 product[0] = '\0';
251 } else if ((ret = libusb_get_string_descriptor_ascii(hdl,
252 des.iProduct, (unsigned char *) product,
253 sizeof(product))) < 0) {
254 sr_warn("Failed to get product string descriptor: %s.",
255 libusb_error_name(ret));
256 continue;
257 }
258
259 if (des.iSerialNumber == 0) {
260 serial_num[0] = '\0';
261 } else if ((ret = libusb_get_string_descriptor_ascii(hdl,
262 des.iSerialNumber, (unsigned char *) serial_num,
263 sizeof(serial_num))) < 0) {
264 sr_warn("Failed to get serial number string descriptor: %s.",
265 libusb_error_name(ret));
266 continue;
267 }
268
269 usb_get_port_path(devlist[i], connection_id, sizeof(connection_id));
270
271 libusb_close(hdl);
272
273 prof = NULL;
274 for (j = 0; supported_fx2[j].vid; j++) {
275 if (des.idVendor == supported_fx2[j].vid &&
276 des.idProduct == supported_fx2[j].pid &&
277 (!supported_fx2[j].usb_manufacturer ||
278 !strcmp(manufacturer, supported_fx2[j].usb_manufacturer)) &&
279 (!supported_fx2[j].usb_manufacturer ||
280 !strcmp(product, supported_fx2[j].usb_product))) {
281 prof = &supported_fx2[j];
282 break;
283 }
284 }
285
286 /* Skip if the device was not found. */
287 if (!prof)
288 continue;
289
290 sdi = g_malloc0(sizeof(struct sr_dev_inst));
291 sdi->status = SR_ST_INITIALIZING;
292 sdi->vendor = g_strdup(prof->vendor);
293 sdi->model = g_strdup(prof->model);
294 sdi->version = g_strdup(prof->model_version);
295 sdi->driver = di;
296 sdi->serial_num = g_strdup(serial_num);
297 sdi->connection_id = g_strdup(connection_id);
298
299 /* Fill in channellist according to this device's profile. */
300 num_logic_channels = prof->dev_caps & DEV_CAPS_16BIT ? 16 : 8;
301 for (j = 0; j < num_logic_channels; j++)
302 sr_channel_new(sdi, j, SR_CHANNEL_LOGIC, TRUE,
303 channel_names[j]);
304
305 devc = fx2lafw_dev_new();
306 devc->profile = prof;
307 devc->sample_wide = (prof->dev_caps & DEV_CAPS_16BIT) != 0;
308 sdi->priv = devc;
309 drvc->instances = g_slist_append(drvc->instances, sdi);
310 devices = g_slist_append(devices, sdi);
311
312 if (!strcmp(prof->model, "DSLogic")
313 || !strcmp(prof->model, "DSLogic Pro")
314 || !strcmp(prof->model, "DSCope")) {
315 devc->dslogic = TRUE;
316 devc->samplerates = dslogic_samplerates;
317 devc->num_samplerates = ARRAY_SIZE(dslogic_samplerates);
318 has_firmware = match_manuf_prod(devlist[i], "DreamSourceLab", "DSLogic")
319 || match_manuf_prod(devlist[i], "DreamSourceLab", "DSCope");
320 } else {
321 devc->dslogic = FALSE;
322 devc->samplerates = samplerates;
323 devc->num_samplerates = ARRAY_SIZE(samplerates);
324 has_firmware = match_manuf_prod(devlist[i],
325 "sigrok", "fx2lafw");
326 }
327
328 if (has_firmware) {
329 /* Already has the firmware, so fix the new address. */
330 sr_dbg("Found an fx2lafw device.");
331 sdi->status = SR_ST_INACTIVE;
332 sdi->inst_type = SR_INST_USB;
333 sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]),
334 libusb_get_device_address(devlist[i]), NULL);
335 } else {
336 if (ezusb_upload_firmware(devlist[i], USB_CONFIGURATION,
337 prof->firmware) == SR_OK)
338 /* Store when this device's FW was updated. */
339 devc->fw_updated = g_get_monotonic_time();
340 else
341 sr_err("Firmware upload failed for "
342 "device %d.%d (logical).",
343 libusb_get_bus_number(devlist[i]),
344 libusb_get_device_address(devlist[i]));
345 sdi->inst_type = SR_INST_USB;
346 sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]),
347 0xff, NULL);
348 }
349 }
350 libusb_free_device_list(devlist, 1);
351 g_slist_free_full(conn_devices, (GDestroyNotify)sr_usb_dev_inst_free);
352
353 return devices;
354}
355
356static GSList *dev_list(const struct sr_dev_driver *di)
357{
358 return ((struct drv_context *)(di->priv))->instances;
359}
360
361static int dev_open(struct sr_dev_inst *sdi)
362{
363 struct sr_dev_driver *di = sdi->driver;
364 struct sr_usb_dev_inst *usb;
365 struct dev_context *devc;
366 char *fpga_firmware = NULL;
367 int ret;
368 int64_t timediff_us, timediff_ms;
369
370 devc = sdi->priv;
371 usb = sdi->conn;
372
373 /*
374 * If the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS
375 * milliseconds for the FX2 to renumerate.
376 */
377 ret = SR_ERR;
378 if (devc->fw_updated > 0) {
379 sr_info("Waiting for device to reset.");
380 /* Takes >= 300ms for the FX2 to be gone from the USB bus. */
381 g_usleep(300 * 1000);
382 timediff_ms = 0;
383 while (timediff_ms < MAX_RENUM_DELAY_MS) {
384 if ((ret = fx2lafw_dev_open(sdi, di)) == SR_OK)
385 break;
386 g_usleep(100 * 1000);
387
388 timediff_us = g_get_monotonic_time() - devc->fw_updated;
389 timediff_ms = timediff_us / 1000;
390 sr_spew("Waited %" PRIi64 "ms.", timediff_ms);
391 }
392 if (ret != SR_OK) {
393 sr_err("Device failed to renumerate.");
394 return SR_ERR;
395 }
396 sr_info("Device came back after %" PRIi64 "ms.", timediff_ms);
397 } else {
398 sr_info("Firmware upload was not needed.");
399 ret = fx2lafw_dev_open(sdi, di);
400 }
401
402 if (ret != SR_OK) {
403 sr_err("Unable to open device.");
404 return SR_ERR;
405 }
406
407 ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE);
408 if (ret != 0) {
409 switch (ret) {
410 case LIBUSB_ERROR_BUSY:
411 sr_err("Unable to claim USB interface. Another "
412 "program or driver has already claimed it.");
413 break;
414 case LIBUSB_ERROR_NO_DEVICE:
415 sr_err("Device has been disconnected.");
416 break;
417 default:
418 sr_err("Unable to claim interface: %s.",
419 libusb_error_name(ret));
420 break;
421 }
422
423 return SR_ERR;
424 }
425
426 if (devc->dslogic) {
427 if (!strcmp(devc->profile->model, "DSLogic")) {
428 fpga_firmware = DSLOGIC_FPGA_FIRMWARE;
429 } else if (!strcmp(devc->profile->model, "DSLogic Pro")) {
430 fpga_firmware = DSLOGIC_PRO_FPGA_FIRMWARE;
431 } else if (!strcmp(devc->profile->model, "DSCope")) {
432 fpga_firmware = DSCOPE_FPGA_FIRMWARE;
433 }
434
435 if ((ret = dslogic_fpga_firmware_upload(sdi,
436 fpga_firmware)) != SR_OK)
437 return ret;
438 }
439
440 if (devc->cur_samplerate == 0) {
441 /* Samplerate hasn't been set; default to the slowest one. */
442 devc->cur_samplerate = devc->samplerates[0];
443 }
444
445 return SR_OK;
446}
447
448static int dev_close(struct sr_dev_inst *sdi)
449{
450 struct sr_usb_dev_inst *usb;
451
452 usb = sdi->conn;
453 if (!usb->devhdl)
454 return SR_ERR;
455
456 sr_info("fx2lafw: Closing device on %d.%d (logical) / %s (physical) interface %d.",
457 usb->bus, usb->address, sdi->connection_id, USB_INTERFACE);
458 libusb_release_interface(usb->devhdl, USB_INTERFACE);
459 libusb_close(usb->devhdl);
460 usb->devhdl = NULL;
461 sdi->status = SR_ST_INACTIVE;
462
463 return SR_OK;
464}
465
466static int cleanup(const struct sr_dev_driver *di)
467{
468 int ret;
469 struct drv_context *drvc;
470
471 if (!(drvc = di->priv))
472 return SR_OK;
473
474 ret = std_dev_clear(di, NULL);
475
476 g_free(drvc);
477
478 return ret;
479}
480
481static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
482 const struct sr_channel_group *cg)
483{
484 struct dev_context *devc;
485 struct sr_usb_dev_inst *usb;
486 char str[128];
487
488 (void)cg;
489
490 if (!sdi)
491 return SR_ERR_ARG;
492
493 devc = sdi->priv;
494
495 switch (key) {
496 case SR_CONF_CONN:
497 if (!sdi->conn)
498 return SR_ERR_ARG;
499 usb = sdi->conn;
500 if (usb->address == 255)
501 /* Device still needs to re-enumerate after firmware
502 * upload, so we don't know its (future) address. */
503 return SR_ERR;
504 snprintf(str, 128, "%d.%d", usb->bus, usb->address);
505 *data = g_variant_new_string(str);
506 break;
507 case SR_CONF_LIMIT_SAMPLES:
508 *data = g_variant_new_uint64(devc->limit_samples);
509 break;
510 case SR_CONF_SAMPLERATE:
511 *data = g_variant_new_uint64(devc->cur_samplerate);
512 break;
513 case SR_CONF_CAPTURE_RATIO:
514 *data = g_variant_new_uint64(devc->capture_ratio);
515 break;
516 default:
517 return SR_ERR_NA;
518 }
519
520 return SR_OK;
521}
522
523static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
524 const struct sr_channel_group *cg)
525{
526 struct dev_context *devc;
527 uint64_t arg;
528 int i, ret;
529
530 (void)cg;
531
532 if (!sdi)
533 return SR_ERR_ARG;
534
535 if (sdi->status != SR_ST_ACTIVE)
536 return SR_ERR;
537
538 devc = sdi->priv;
539
540 ret = SR_OK;
541
542 switch (key) {
543 case SR_CONF_SAMPLERATE:
544 arg = g_variant_get_uint64(data);
545 for (i = 0; i < devc->num_samplerates; i++) {
546 if (devc->samplerates[i] == arg) {
547 devc->cur_samplerate = arg;
548 break;
549 }
550 }
551 if (i == devc->num_samplerates)
552 ret = SR_ERR_ARG;
553 break;
554 case SR_CONF_LIMIT_SAMPLES:
555 devc->limit_samples = g_variant_get_uint64(data);
556 break;
557 case SR_CONF_CAPTURE_RATIO:
558 devc->capture_ratio = g_variant_get_uint64(data);
559 if (devc->capture_ratio > 100) {
560 devc->capture_ratio = 0;
561 ret = SR_ERR;
562 } else
563 ret = SR_OK;
564 break;
565 default:
566 ret = SR_ERR_NA;
567 }
568
569 return ret;
570}
571
572static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
573 const struct sr_channel_group *cg)
574{
575 struct dev_context *devc;
576 GVariant *gvar;
577 GVariantBuilder gvb;
578
579 (void)cg;
580
581 switch (key) {
582 case SR_CONF_SCAN_OPTIONS:
583 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
584 scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
585 break;
586 case SR_CONF_DEVICE_OPTIONS:
587 if (!sdi)
588 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
589 drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t));
590 else
591 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
592 devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
593 break;
594 case SR_CONF_SAMPLERATE:
595 if (!sdi->priv)
596 return SR_ERR_ARG;
597 devc = sdi->priv;
598 g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
599 gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), devc->samplerates,
600 devc->num_samplerates, sizeof(uint64_t));
601 g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar);
602 *data = g_variant_builder_end(&gvb);
603 break;
604 case SR_CONF_TRIGGER_MATCH:
605 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
606 soft_trigger_matches, ARRAY_SIZE(soft_trigger_matches),
607 sizeof(int32_t));
608 break;
609 default:
610 return SR_ERR_NA;
611 }
612
613 return SR_OK;
614}
615
616static int receive_data(int fd, int revents, void *cb_data)
617{
618 struct timeval tv;
619 struct drv_context *drvc;
620
621 (void)fd;
622 (void)revents;
623
624 drvc = (struct drv_context *)cb_data;
625
626 tv.tv_sec = tv.tv_usec = 0;
627 libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv);
628
629 return TRUE;
630}
631
632static int start_transfers(const struct sr_dev_inst *sdi)
633{
634 struct dev_context *devc;
635 struct sr_usb_dev_inst *usb;
636 struct sr_trigger *trigger;
637 struct libusb_transfer *transfer;
638 unsigned int i, num_transfers;
639 int endpoint, timeout, ret;
640 unsigned char *buf;
641 size_t size;
642
643 devc = sdi->priv;
644 usb = sdi->conn;
645
646 devc->sent_samples = 0;
647 devc->acq_aborted = FALSE;
648 devc->empty_transfer_count = 0;
649
650 if ((trigger = sr_session_trigger_get(sdi->session))) {
651 int pre_trigger_samples = 0;
652 if (devc->limit_samples > 0)
653 pre_trigger_samples = devc->capture_ratio * devc->limit_samples/100;
654 devc->stl = soft_trigger_logic_new(sdi, trigger, pre_trigger_samples);
655 if (!devc->stl)
656 return SR_ERR_MALLOC;
657 devc->trigger_fired = FALSE;
658 } else
659 devc->trigger_fired = TRUE;
660
661 timeout = fx2lafw_get_timeout(devc);
662
663 num_transfers = fx2lafw_get_number_of_transfers(devc);
664 size = fx2lafw_get_buffer_size(devc);
665 devc->submitted_transfers = 0;
666
667 devc->transfers = g_try_malloc0(sizeof(*devc->transfers) * num_transfers);
668 if (!devc->transfers) {
669 sr_err("USB transfers malloc failed.");
670 return SR_ERR_MALLOC;
671 }
672
673 timeout = fx2lafw_get_timeout(devc);
674 endpoint = devc->dslogic ? 6 : 2;
675 devc->num_transfers = num_transfers;
676 for (i = 0; i < num_transfers; i++) {
677 if (!(buf = g_try_malloc(size))) {
678 sr_err("USB transfer buffer malloc failed.");
679 return SR_ERR_MALLOC;
680 }
681 transfer = libusb_alloc_transfer(0);
682 libusb_fill_bulk_transfer(transfer, usb->devhdl,
683 endpoint | LIBUSB_ENDPOINT_IN, buf, size,
684 fx2lafw_receive_transfer, (void *)sdi, timeout);
685 if ((ret = libusb_submit_transfer(transfer)) != 0) {
686 sr_err("Failed to submit transfer: %s.",
687 libusb_error_name(ret));
688 libusb_free_transfer(transfer);
689 g_free(buf);
690 fx2lafw_abort_acquisition(devc);
691 return SR_ERR;
692 }
693 devc->transfers[i] = transfer;
694 devc->submitted_transfers++;
695 }
696
697 /* Send header packet to the session bus. */
698 std_session_send_df_header(sdi, LOG_PREFIX);
699
700 return SR_OK;
701}
702
703static void LIBUSB_CALL dslogic_trigger_receive(struct libusb_transfer *transfer)
704{
705 const struct sr_dev_inst *sdi;
706 struct dslogic_trigger_pos *tpos;
707
708 sdi = transfer->user_data;
709
710 if (transfer->status == LIBUSB_TRANSFER_COMPLETED
711 && transfer->actual_length == sizeof(struct dslogic_trigger_pos)) {
712 tpos = (struct dslogic_trigger_pos *)transfer->buffer;
713 sr_dbg("tpos real_pos %.8x ram_saddr %.8x", tpos->real_pos, tpos->ram_saddr);
714 g_free(tpos);
715 start_transfers(sdi);
716 }
717
718 libusb_free_transfer(transfer);
719
720}
721
722static int dslogic_trigger_request(const struct sr_dev_inst *sdi)
723{
724 struct sr_usb_dev_inst *usb;
725 struct libusb_transfer *transfer;
726 struct dslogic_trigger_pos *tpos;
727 int ret;
728
729 usb = sdi->conn;
730
731 if ((ret = dslogic_stop_acquisition(sdi)) != SR_OK)
732 return ret;
733
734 if ((ret = dslogic_fpga_configure(sdi)) != SR_OK)
735 return ret;
736
737 if ((ret = dslogic_start_acquisition(sdi)) != SR_OK)
738 return ret;
739
740 sr_dbg("Getting trigger.");
741 tpos = g_malloc(sizeof(struct dslogic_trigger_pos));
742 transfer = libusb_alloc_transfer(0);
743 libusb_fill_bulk_transfer(transfer, usb->devhdl, 6 | LIBUSB_ENDPOINT_IN,
744 (unsigned char *)tpos, sizeof(struct dslogic_trigger_pos),
745 dslogic_trigger_receive, (void *)sdi, 0);
746 if ((ret = libusb_submit_transfer(transfer)) < 0) {
747 sr_err("Failed to request trigger: %s.", libusb_error_name(ret));
748 libusb_free_transfer(transfer);
749 g_free(tpos);
750 return SR_ERR;
751 }
752
753 return ret;
754}
755
756static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
757{
758 struct sr_dev_driver *di;
759 struct drv_context *drvc;
760 struct dev_context *devc;
761 int timeout, ret;
762
763 if (sdi->status != SR_ST_ACTIVE)
764 return SR_ERR_DEV_CLOSED;
765
766 di = sdi->driver;
767 drvc = di->priv;
768 devc = sdi->priv;
769
770 devc->ctx = drvc->sr_ctx;
771 devc->cb_data = cb_data;
772 devc->sent_samples = 0;
773 devc->empty_transfer_count = 0;
774 devc->acq_aborted = FALSE;
775
776 timeout = fx2lafw_get_timeout(devc);
777 usb_source_add(sdi->session, devc->ctx, timeout, receive_data, drvc);
778
779 if (devc->dslogic) {
780 dslogic_trigger_request(sdi);
781 }
782 else {
783 start_transfers(sdi);
784 if ((ret = fx2lafw_command_start_acquisition(sdi)) != SR_OK) {
785 fx2lafw_abort_acquisition(devc);
786 return ret;
787 }
788 }
789
790 return SR_OK;
791}
792
793static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
794{
795 (void)cb_data;
796
797 fx2lafw_abort_acquisition(sdi->priv);
798
799 return SR_OK;
800}
801
802SR_PRIV struct sr_dev_driver fx2lafw_driver_info = {
803 .name = "fx2lafw",
804 .longname = "fx2lafw (generic driver for FX2 based LAs)",
805 .api_version = 1,
806 .init = init,
807 .cleanup = cleanup,
808 .scan = scan,
809 .dev_list = dev_list,
810 .dev_clear = NULL,
811 .config_get = config_get,
812 .config_set = config_set,
813 .config_list = config_list,
814 .dev_open = dev_open,
815 .dev_close = dev_close,
816 .dev_acquisition_start = dev_acquisition_start,
817 .dev_acquisition_stop = dev_acquisition_stop,
818 .priv = NULL,
819};
Hardware access and backend lib