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fx2lafw/dslogic: Split DSLogic into a separate driver
[libsigrok.git] / src / hardware / dslogic / api.c
CommitLineData
adcb9951
JH		 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#include <math.h>
25
26static const struct dslogic_profile supported_device[] = {
27 /* DreamSourceLab DSLogic (before FW upload) */
28 { 0x2a0e, 0x0001, "DreamSourceLab", "DSLogic", NULL,
29 "dreamsourcelab-dslogic-fx2.fw",
30 0, NULL, NULL},
31 /* DreamSourceLab DSLogic (after FW upload) */
32 { 0x2a0e, 0x0001, "DreamSourceLab", "DSLogic", NULL,
33 "dreamsourcelab-dslogic-fx2.fw",
34 0, "DreamSourceLab", "DSLogic"},
35
36 /* DreamSourceLab DSCope (before FW upload) */
37 { 0x2a0e, 0x0002, "DreamSourceLab", "DSCope", NULL,
38 "dreamsourcelab-dscope-fx2.fw",
39 0, NULL, NULL},
40 /* DreamSourceLab DSCope (after FW upload) */
41 { 0x2a0e, 0x0002, "DreamSourceLab", "DSCope", NULL,
42 "dreamsourcelab-dscope-fx2.fw",
43 0, "DreamSourceLab", "DSCope"},
44
45 /* DreamSourceLab DSLogic Pro (before FW upload) */
46 { 0x2a0e, 0x0003, "DreamSourceLab", "DSLogic Pro", NULL,
47 "dreamsourcelab-dslogic-pro-fx2.fw",
48 0, NULL, NULL},
49 /* DreamSourceLab DSLogic Pro (after FW upload) */
50 { 0x2a0e, 0x0003, "DreamSourceLab", "DSLogic Pro", NULL,
51 "dreamsourcelab-dslogic-pro-fx2.fw",
52 0, "DreamSourceLab", "DSLogic"},
53
54 /* DreamSourceLab DSLogic Plus (before FW upload) */
55 { 0x2a0e, 0x0020, "DreamSourceLab", "DSLogic Plus", NULL,
56 "dreamsourcelab-dslogic-plus-fx2.fw",
57 0, NULL, NULL},
58 /* DreamSourceLab DSLogic Plus (after FW upload) */
59 { 0x2a0e, 0x0020, "DreamSourceLab", "DSLogic Plus", NULL,
60 "dreamsourcelab-dslogic-plus-fx2.fw",
61 0, "DreamSourceLab", "DSLogic"},
62
63 /* DreamSourceLab DSLogic Basic (before FW upload) */
64 { 0x2a0e, 0x0021, "DreamSourceLab", "DSLogic Basic", NULL,
65 "dreamsourcelab-dslogic-basic-fx2.fw",
66 0, NULL, NULL},
67 /* DreamSourceLab DSLogic Basic (after FW upload) */
68 { 0x2a0e, 0x0021, "DreamSourceLab", "DSLogic Basic", NULL,
69 "dreamsourcelab-dslogic-basic-fx2.fw",
70 0, "DreamSourceLab", "DSLogic"},
71
72 ALL_ZERO
73};
74
75static const uint32_t drvopts[] = {
76 SR_CONF_LOGIC_ANALYZER,
77};
78
79static const uint32_t scanopts[] = {
80 SR_CONF_CONN,
81};
82
83static const uint32_t devopts[] = {
84 SR_CONF_CONTINUOUS | SR_CONF_SET | SR_CONF_GET,
85 SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET,
86 SR_CONF_VOLTAGE_THRESHOLD | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
87 SR_CONF_CONN | SR_CONF_GET,
88 SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
89 SR_CONF_TRIGGER_MATCH | SR_CONF_LIST,
90 SR_CONF_CAPTURE_RATIO | SR_CONF_GET | SR_CONF_SET,
91 SR_CONF_EXTERNAL_CLOCK | SR_CONF_GET | SR_CONF_SET,
92 SR_CONF_CLOCK_EDGE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
93};
94
95/* Names assigned to available edge slope choices. */
96static const char *const signal_edge_names[] = {
97 [DS_EDGE_RISING] = "rising",
98 [DS_EDGE_FALLING] = "falling",
99};
100
101static const struct {
102 int range;
103 gdouble low;
104 gdouble high;
105} volt_thresholds[] = {
106 { DS_VOLTAGE_RANGE_18_33_V, 0.7, 1.4 },
107 { DS_VOLTAGE_RANGE_5_V, 1.4, 3.6 },
108};
109
110static const uint64_t samplerates[] = {
111 SR_KHZ(10),
112 SR_KHZ(20),
113 SR_KHZ(50),
114 SR_KHZ(100),
115 SR_KHZ(200),
116 SR_KHZ(500),
117 SR_MHZ(1),
118 SR_MHZ(2),
119 SR_MHZ(5),
120 SR_MHZ(10),
121 SR_MHZ(20),
122 SR_MHZ(25),
123 SR_MHZ(50),
124 SR_MHZ(100),
125 SR_MHZ(200),
126 SR_MHZ(400),
127};
128
129static gboolean is_plausible(const struct libusb_device_descriptor *des)
130{
131 int i;
132
133 for (i = 0; supported_device[i].vid; i++) {
134 if (des->idVendor != supported_device[i].vid)
135 continue;
136 if (des->idProduct == supported_device[i].pid)
137 return TRUE;
138 }
139
140 return FALSE;
141}
142
143static GSList *scan(struct sr_dev_driver *di, GSList *options)
144{
145 struct drv_context *drvc;
146 struct dev_context *devc;
147 struct sr_dev_inst *sdi;
148 struct sr_usb_dev_inst *usb;
149 struct sr_channel *ch;
150 struct sr_channel_group *cg;
151 struct sr_config *src;
152 const struct dslogic_profile *prof;
153 GSList *l, *devices, *conn_devices;
154 gboolean has_firmware;
155 struct libusb_device_descriptor des;
156 libusb_device **devlist;
157 struct libusb_device_handle *hdl;
158 int ret, i, j;
159 const char *conn;
160 char manufacturer[64], product[64], serial_num[64], connection_id[64];
161 char channel_name[16];
162
163 drvc = di->context;
164
165 conn = NULL;
166 for (l = options; l; l = l->next) {
167 src = l->data;
168 switch (src->key) {
169 case SR_CONF_CONN:
170 conn = g_variant_get_string(src->data, NULL);
171 break;
172 }
173 }
174 if (conn)
175 conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn);
176 else
177 conn_devices = NULL;
178
179 /* Find all dslogic compatible devices and upload firmware to them. */
180 devices = NULL;
181 libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
182 for (i = 0; devlist[i]; i++) {
183 if (conn) {
184 usb = NULL;
185 for (l = conn_devices; l; l = l->next) {
186 usb = l->data;
187 if (usb->bus == libusb_get_bus_number(devlist[i])
188 && usb->address == libusb_get_device_address(devlist[i]))
189 break;
190 }
191 if (!l)
192 /* This device matched none of the ones that
193 * matched the conn specification. */
194 continue;
195 }
196
197 libusb_get_device_descriptor( devlist[i], &des);
198
199 if (!is_plausible(&des))
200 continue;
201
202 if ((ret = libusb_open(devlist[i], &hdl)) < 0) {
203 sr_warn("Failed to open potential device with "
204 "VID:PID %04x:%04x: %s.", des.idVendor,
205 des.idProduct, libusb_error_name(ret));
206 continue;
207 }
208
209 if (des.iManufacturer == 0) {
210 manufacturer[0] = '\0';
211 } else if ((ret = libusb_get_string_descriptor_ascii(hdl,
212 des.iManufacturer, (unsigned char *) manufacturer,
213 sizeof(manufacturer))) < 0) {
214 sr_warn("Failed to get manufacturer string descriptor: %s.",
215 libusb_error_name(ret));
216 continue;
217 }
218
219 if (des.iProduct == 0) {
220 product[0] = '\0';
221 } else if ((ret = libusb_get_string_descriptor_ascii(hdl,
222 des.iProduct, (unsigned char *) product,
223 sizeof(product))) < 0) {
224 sr_warn("Failed to get product string descriptor: %s.",
225 libusb_error_name(ret));
226 continue;
227 }
228
229 if (des.iSerialNumber == 0) {
230 serial_num[0] = '\0';
231 } else if ((ret = libusb_get_string_descriptor_ascii(hdl,
232 des.iSerialNumber, (unsigned char *) serial_num,
233 sizeof(serial_num))) < 0) {
234 sr_warn("Failed to get serial number string descriptor: %s.",
235 libusb_error_name(ret));
236 continue;
237 }
238
239 usb_get_port_path(devlist[i], connection_id, sizeof(connection_id));
240
241 libusb_close(hdl);
242
243 prof = NULL;
244 for (j = 0; supported_device[j].vid; j++) {
245 if (des.idVendor == supported_device[j].vid &&
246 des.idProduct == supported_device[j].pid &&
247 (!supported_device[j].usb_manufacturer ||
248 !strcmp(manufacturer, supported_device[j].usb_manufacturer)) &&
249 (!supported_device[j].usb_product ||
250 !strcmp(product, supported_device[j].usb_product))) {
251 prof = &supported_device[j];
252 break;
253 }
254 }
255
256 /* Skip if the device was not found. */
257 if (!prof)
258 continue;
259
260 sdi = g_malloc0(sizeof(struct sr_dev_inst));
261 sdi->status = SR_ST_INITIALIZING;
262 sdi->vendor = g_strdup(prof->vendor);
263 sdi->model = g_strdup(prof->model);
264 sdi->version = g_strdup(prof->model_version);
265 sdi->serial_num = g_strdup(serial_num);
266 sdi->connection_id = g_strdup(connection_id);
267
268 /* Logic channels, all in one channel group. */
269 cg = g_malloc0(sizeof(struct sr_channel_group));
270 cg->name = g_strdup("Logic");
271 for (j = 0; j < 16; j++) {
272 sprintf(channel_name, "D%d", j);
273 ch = sr_channel_new(sdi, j, SR_CHANNEL_LOGIC,
274 TRUE, channel_name);
275 cg->channels = g_slist_append(cg->channels, ch);
276 }
277 sdi->channel_groups = g_slist_append(NULL, cg);
278
279 devc = dslogic_dev_new();
280 devc->profile = prof;
281 sdi->priv = devc;
282 devices = g_slist_append(devices, sdi);
283
284 devc->samplerates = samplerates;
285 devc->num_samplerates = ARRAY_SIZE(samplerates);
286 has_firmware = usb_match_manuf_prod(devlist[i], "DreamSourceLab", "DSLogic")
287 || usb_match_manuf_prod(devlist[i], "DreamSourceLab", "DSCope");
288
289 if (has_firmware) {
290 /* Already has the firmware, so fix the new address. */
291 sr_dbg("Found an dslogic device.");
292 sdi->status = SR_ST_INACTIVE;
293 sdi->inst_type = SR_INST_USB;
294 sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]),
295 libusb_get_device_address(devlist[i]), NULL);
296 } else {
297 if (ezusb_upload_firmware(drvc->sr_ctx, devlist[i],
298 USB_CONFIGURATION, prof->firmware) == SR_OK)
299 /* Store when this device's FW was updated. */
300 devc->fw_updated = g_get_monotonic_time();
301 else
302 sr_err("Firmware upload failed for "
303 "device %d.%d (logical).",
304 libusb_get_bus_number(devlist[i]),
305 libusb_get_device_address(devlist[i]));
306 sdi->inst_type = SR_INST_USB;
307 sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]),
308 0xff, NULL);
309 }
310 }
311 libusb_free_device_list(devlist, 1);
312 g_slist_free_full(conn_devices, (GDestroyNotify)sr_usb_dev_inst_free);
313
314 return std_scan_complete(di, devices);
315}
316
317static void clear_dev_context(void *priv)
318{
319 struct dev_context *devc;
320
321 devc = priv;
322 g_free(devc);
323}
324
325static int dev_clear(const struct sr_dev_driver *di)
326{
327 return std_dev_clear(di, clear_dev_context);
328}
329
330static int dev_open(struct sr_dev_inst *sdi)
331{
332 struct sr_dev_driver *di = sdi->driver;
333 struct sr_usb_dev_inst *usb;
334 struct dev_context *devc;
335 const char *fpga_firmware = NULL;
336 int ret;
337 int64_t timediff_us, timediff_ms;
338
339 devc = sdi->priv;
340 usb = sdi->conn;
341
342 /*
343 * If the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS
344 * milliseconds for the FX2 to renumerate.
345 */
346 ret = SR_ERR;
347 if (devc->fw_updated > 0) {
348 sr_info("Waiting for device to reset.");
349 /* Takes >= 300ms for the FX2 to be gone from the USB bus. */
350 g_usleep(300 * 1000);
351 timediff_ms = 0;
352 while (timediff_ms < MAX_RENUM_DELAY_MS) {
353 if ((ret = dslogic_dev_open(sdi, di)) == SR_OK)
354 break;
355 g_usleep(100 * 1000);
356
357 timediff_us = g_get_monotonic_time() - devc->fw_updated;
358 timediff_ms = timediff_us / 1000;
359 sr_spew("Waited %" PRIi64 "ms.", timediff_ms);
360 }
361 if (ret != SR_OK) {
362 sr_err("Device failed to renumerate.");
363 return SR_ERR;
364 }
365 sr_info("Device came back after %" PRIi64 "ms.", timediff_ms);
366 } else {
367 sr_info("Firmware upload was not needed.");
368 ret = dslogic_dev_open(sdi, di);
369 }
370
371 if (ret != SR_OK) {
372 sr_err("Unable to open device.");
373 return SR_ERR;
374 }
375
376 ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE);
377 if (ret != 0) {
378 switch (ret) {
379 case LIBUSB_ERROR_BUSY:
380 sr_err("Unable to claim USB interface. Another "
381 "program or driver has already claimed it.");
382 break;
383 case LIBUSB_ERROR_NO_DEVICE:
384 sr_err("Device has been disconnected.");
385 break;
386 default:
387 sr_err("Unable to claim interface: %s.",
388 libusb_error_name(ret));
389 break;
390 }
391
392 return SR_ERR;
393 }
394
395 if (!strcmp(devc->profile->model, "DSLogic")) {
396 if (devc->voltage_threshold == DS_VOLTAGE_RANGE_18_33_V)
397 fpga_firmware = DSLOGIC_FPGA_FIRMWARE_3V3;
398 else
399 fpga_firmware = DSLOGIC_FPGA_FIRMWARE_5V;
400 } else if (!strcmp(devc->profile->model, "DSLogic Pro")){
401 fpga_firmware = DSLOGIC_PRO_FPGA_FIRMWARE;
402 } else if (!strcmp(devc->profile->model, "DSLogic Plus")){
403 fpga_firmware = DSLOGIC_PLUS_FPGA_FIRMWARE;
404 } else if (!strcmp(devc->profile->model, "DSLogic Basic")){
405 fpga_firmware = DSLOGIC_BASIC_FPGA_FIRMWARE;
406 } else if (!strcmp(devc->profile->model, "DSCope")) {
407 fpga_firmware = DSCOPE_FPGA_FIRMWARE;
408 }
409
410 if ((ret = dslogic_fpga_firmware_upload(sdi, fpga_firmware)) != SR_OK)
411 return ret;
412
413 if (devc->cur_samplerate == 0) {
414 /* Samplerate hasn't been set; default to the slowest one. */
415 devc->cur_samplerate = devc->samplerates[0];
416 }
417
418 return SR_OK;
419}
420
421static int dev_close(struct sr_dev_inst *sdi)
422{
423 struct sr_usb_dev_inst *usb;
424
425 usb = sdi->conn;
426
427 if (!usb->devhdl)
428 return SR_ERR;
429
430 sr_info("dslogic: Closing device on %d.%d (logical) / %s (physical) interface %d.",
431 usb->bus, usb->address, sdi->connection_id, USB_INTERFACE);
432 libusb_release_interface(usb->devhdl, USB_INTERFACE);
433 libusb_close(usb->devhdl);
434 usb->devhdl = NULL;
435 sdi->status = SR_ST_INACTIVE;
436
437 return SR_OK;
438}
439
440static int config_get(uint32_t key, GVariant **data,
441 const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
442{
443 struct dev_context *devc;
444 struct sr_usb_dev_inst *usb;
445 GVariant *range[2];
446 unsigned int i;
447 char str[128];
448
449 (void)cg;
450
451 if (!sdi)
452 return SR_ERR_ARG;
453
454 devc = sdi->priv;
455
456 switch (key) {
457 case SR_CONF_CONN:
458 if (!sdi->conn)
459 return SR_ERR_ARG;
460 usb = sdi->conn;
461 if (usb->address == 255)
462 /* Device still needs to re-enumerate after firmware
463 * upload, so we don't know its (future) address. */
464 return SR_ERR;
465 snprintf(str, 128, "%d.%d", usb->bus, usb->address);
466 *data = g_variant_new_string(str);
467 break;
468 case SR_CONF_VOLTAGE_THRESHOLD:
469 for (i = 0; i < ARRAY_SIZE(volt_thresholds); i++) {
470 if (volt_thresholds[i].range != devc->voltage_threshold)
471 continue;
472 range[0] = g_variant_new_double(volt_thresholds[i].low);
473 range[1] = g_variant_new_double(volt_thresholds[i].high);
474 *data = g_variant_new_tuple(range, 2);
475 break;
476 }
477 break;
478 case SR_CONF_LIMIT_SAMPLES:
479 *data = g_variant_new_uint64(devc->limit_samples);
480 break;
481 case SR_CONF_SAMPLERATE:
482 *data = g_variant_new_uint64(devc->cur_samplerate);
483 break;
484 case SR_CONF_CAPTURE_RATIO:
485 *data = g_variant_new_uint64(devc->capture_ratio);
486 break;
487 case SR_CONF_EXTERNAL_CLOCK:
488 *data = g_variant_new_boolean(devc->external_clock);
489 break;
490 case SR_CONF_CONTINUOUS:
491 *data = g_variant_new_boolean(devc->continuous_mode);
492 break;
493 case SR_CONF_CLOCK_EDGE:
494 i = devc->clock_edge;
495 if (i >= ARRAY_SIZE(signal_edge_names))
496 return SR_ERR_BUG;
497 *data = g_variant_new_string(signal_edge_names[0]);
498 break;
499 default:
500 return SR_ERR_NA;
501 }
502
503 return SR_OK;
504}
505
506/*
507 * Helper for mapping a string-typed configuration value to an index
508 * within a table of possible values.
509 */
510static int lookup_index(GVariant *value, const char *const *table, int len)
511{
512 const char *entry;
513 int i;
514
515 entry = g_variant_get_string(value, NULL);
516 if (!entry)
517 return -1;
518
519 /* Linear search is fine for very small tables. */
520 for (i = 0; i < len; i++) {
521 if (strcmp(entry, table[i]) == 0)
522 return i;
523 }
524
525 return -1;
526}
527
528static int config_set(uint32_t key, GVariant *data,
529 const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
530{
531 struct dev_context *devc;
532 uint64_t arg;
533 int i, ret;
534 gdouble low, high;
535
536 (void)cg;
537
538 if (!sdi)
539 return SR_ERR_ARG;
540
541 if (sdi->status != SR_ST_ACTIVE)
542 return SR_ERR;
543
544 devc = sdi->priv;
545
546 ret = SR_OK;
547
548 switch (key) {
549 case SR_CONF_SAMPLERATE:
550 arg = g_variant_get_uint64(data);
551 for (i = 0; i < devc->num_samplerates; i++) {
552 if (devc->samplerates[i] == arg) {
553 devc->cur_samplerate = arg;
554 break;
555 }
556 }
557 if (i == devc->num_samplerates)
558 ret = SR_ERR_ARG;
559 break;
560 case SR_CONF_LIMIT_SAMPLES:
561 devc->limit_samples = g_variant_get_uint64(data);
562 break;
563 case SR_CONF_CAPTURE_RATIO:
564 devc->capture_ratio = g_variant_get_uint64(data);
565 ret = (devc->capture_ratio > 100) ? SR_ERR : SR_OK;
566 break;
567 case SR_CONF_VOLTAGE_THRESHOLD:
568 g_variant_get(data, "(dd)", &low, &high);
569 ret = SR_ERR_ARG;
570 for (i = 0; (unsigned int)i < ARRAY_SIZE(volt_thresholds); i++) {
571 if (fabs(volt_thresholds[i].low - low) < 0.1 &&
572 fabs(volt_thresholds[i].high - high) < 0.1) {
573 devc->voltage_threshold = volt_thresholds[i].range;
574 break;
575 }
576 }
577 if (!strcmp(devc->profile->model, "DSLogic")) {
578 if (devc->voltage_threshold == DS_VOLTAGE_RANGE_5_V)
579 ret = dslogic_fpga_firmware_upload(sdi, DSLOGIC_FPGA_FIRMWARE_5V);
580 else
581 ret = dslogic_fpga_firmware_upload(sdi, DSLOGIC_FPGA_FIRMWARE_3V3);
582 } else if (!strcmp(devc->profile->model, "DSLogic Pro")) {
583 ret = dslogic_fpga_firmware_upload(sdi, DSLOGIC_PRO_FPGA_FIRMWARE);
584 } else if (!strcmp(devc->profile->model, "DSLogic Plus")) {
585 ret = dslogic_fpga_firmware_upload(sdi, DSLOGIC_PLUS_FPGA_FIRMWARE);
586 } else if (!strcmp(devc->profile->model, "DSLogic Basic")) {
587 ret = dslogic_fpga_firmware_upload(sdi, DSLOGIC_BASIC_FPGA_FIRMWARE);
588 }
589 break;
590 case SR_CONF_EXTERNAL_CLOCK:
591 devc->external_clock = g_variant_get_boolean(data);
592 break;
593 case SR_CONF_CONTINUOUS:
594 devc->continuous_mode = g_variant_get_boolean(data);
595 break;
596 case SR_CONF_CLOCK_EDGE:
597 i = lookup_index(data, signal_edge_names,
598 ARRAY_SIZE(signal_edge_names));
599 if (i < 0)
600 return SR_ERR_ARG;
601 devc->clock_edge = i;
602 break;
603 default:
604 ret = SR_ERR_NA;
605 }
606
607 return ret;
608}
609
610static int config_list(uint32_t key, GVariant **data,
611 const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
612{
613 struct dev_context *devc;
614 GVariant *gvar, *range[2];
615 GVariantBuilder gvb;
616 unsigned int i;
617
618 (void)cg;
619
620 switch (key) {
621 case SR_CONF_SCAN_OPTIONS:
622 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
623 scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
624 break;
625 case SR_CONF_DEVICE_OPTIONS:
626 if (!sdi) {
627 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
628 drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t));
629 } else {
630 devc = sdi->priv;
631 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
632 devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
633 }
634 break;
635 case SR_CONF_VOLTAGE_THRESHOLD:
636 if (!sdi->priv)
637 return SR_ERR_ARG;
638 devc = sdi->priv;
639 g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
640 for (i = 0; i < ARRAY_SIZE(volt_thresholds); i++) {
641 range[0] = g_variant_new_double(volt_thresholds[i].low);
642 range[1] = g_variant_new_double(volt_thresholds[i].high);
643 gvar = g_variant_new_tuple(range, 2);
644 g_variant_builder_add_value(&gvb, gvar);
645 }
646 *data = g_variant_builder_end(&gvb);
647 break;
648 case SR_CONF_SAMPLERATE:
649 devc = sdi->priv;
650 g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
651 gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), devc->samplerates,
652 devc->num_samplerates, sizeof(uint64_t));
653 g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar);
654 *data = g_variant_builder_end(&gvb);
655 break;
656 case SR_CONF_CLOCK_EDGE:
657 *data = g_variant_new_strv(signal_edge_names,
658 ARRAY_SIZE(signal_edge_names));
659 break;
660 default:
661 return SR_ERR_NA;
662 }
663
664 return SR_OK;
665}
666
667static int receive_data(int fd, int revents, void *cb_data)
668{
669 struct timeval tv;
670 struct drv_context *drvc;
671
672 (void)fd;
673 (void)revents;
674
675 drvc = (struct drv_context *)cb_data;
676
677 tv.tv_sec = tv.tv_usec = 0;
678 libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv);
679
680 return TRUE;
681}
682
683static int start_transfers(const struct sr_dev_inst *sdi)
684{
685 struct dev_context *devc;
686 struct sr_usb_dev_inst *usb;
687 struct libusb_transfer *transfer;
688 unsigned int i, num_transfers;
689 int timeout, ret;
690 unsigned char *buf;
691 size_t size;
692
693 devc = sdi->priv;
694 usb = sdi->conn;
695
696 devc->sent_samples = 0;
697 devc->acq_aborted = FALSE;
698 devc->empty_transfer_count = 0;
699 devc->trigger_fired = TRUE;
700
701 num_transfers = dslogic_get_number_of_transfers(devc);
702
703 if (devc->cur_samplerate == SR_MHZ(100))
704 num_transfers = 16;
705 else if (devc->cur_samplerate == SR_MHZ(200))
706 num_transfers = 8;
707 else if (devc->cur_samplerate == SR_MHZ(400))
708 num_transfers = 4;
709
710 size = dslogic_get_buffer_size(devc);
711 devc->submitted_transfers = 0;
712
713 devc->transfers = g_try_malloc0(sizeof(*devc->transfers) * num_transfers);
714 if (!devc->transfers) {
715 sr_err("USB transfers malloc failed.");
716 return SR_ERR_MALLOC;
717 }
718
719 timeout = dslogic_get_timeout(devc);
720 devc->num_transfers = num_transfers;
721 for (i = 0; i < num_transfers; i++) {
722 if (!(buf = g_try_malloc(size))) {
723 sr_err("USB transfer buffer malloc failed.");
724 return SR_ERR_MALLOC;
725 }
726 transfer = libusb_alloc_transfer(0);
727 libusb_fill_bulk_transfer(transfer, usb->devhdl,
728 6 | LIBUSB_ENDPOINT_IN, buf, size,
729 dslogic_receive_transfer, (void *)sdi, timeout);
730 sr_info("submitting transfer: %d", i);
731 if ((ret = libusb_submit_transfer(transfer)) != 0) {
732 sr_err("Failed to submit transfer: %s.",
733 libusb_error_name(ret));
734 libusb_free_transfer(transfer);
735 g_free(buf);
736 dslogic_abort_acquisition(devc);
737 return SR_ERR;
738 }
739 devc->transfers[i] = transfer;
740 devc->submitted_transfers++;
741 }
742
743 std_session_send_df_header(sdi);
744
745 return SR_OK;
746}
747
748static void LIBUSB_CALL trigger_receive(struct libusb_transfer *transfer)
749{
750 const struct sr_dev_inst *sdi;
751 struct dslogic_trigger_pos *tpos;
752 struct dev_context *devc;
753
754 sdi = transfer->user_data;
755 devc = sdi->priv;
756 if (transfer->status == LIBUSB_TRANSFER_CANCELLED) {
757 sr_dbg("Trigger transfer canceled.");
758 /* Terminate session. */
759 std_session_send_df_end(sdi);
760 usb_source_remove(sdi->session, devc->ctx);
761 devc->num_transfers = 0;
762 g_free(devc->transfers);
763 } else if (transfer->status == LIBUSB_TRANSFER_COMPLETED
764 && transfer->actual_length == sizeof(struct dslogic_trigger_pos)) {
765 tpos = (struct dslogic_trigger_pos *)transfer->buffer;
766 sr_info("tpos real_pos %d ram_saddr %d cnt %d", tpos->real_pos,
767 tpos->ram_saddr, tpos->remain_cnt);
768 devc->trigger_pos = tpos->real_pos;
769 g_free(tpos);
770 start_transfers(sdi);
771 }
772 libusb_free_transfer(transfer);
773}
774
775static int trigger_request(const struct sr_dev_inst *sdi)
776{
777 struct sr_usb_dev_inst *usb;
778 struct libusb_transfer *transfer;
779 struct dslogic_trigger_pos *tpos;
780 struct dev_context *devc;
781 int ret;
782
783 usb = sdi->conn;
784 devc = sdi->priv;
785
786 if ((ret = dslogic_stop_acquisition(sdi)) != SR_OK)
787 return ret;
788
789 if ((ret = dslogic_fpga_configure(sdi)) != SR_OK)
790 return ret;
791
792 /* If this is a DSLogic Pro, set the voltage threshold. */
793 if (!strcmp(devc->profile->model, "DSLogic Pro")){
794 if (devc->voltage_threshold == DS_VOLTAGE_RANGE_18_33_V) {
795 dslogic_set_vth(sdi, 1.4);
796 } else {
797 dslogic_set_vth(sdi, 3.3);
798 }
799 }
800
801 if ((ret = dslogic_start_acquisition(sdi)) != SR_OK)
802 return ret;
803
804 sr_dbg("Getting trigger.");
805 tpos = g_malloc(sizeof(struct dslogic_trigger_pos));
806 transfer = libusb_alloc_transfer(0);
807 libusb_fill_bulk_transfer(transfer, usb->devhdl, 6 | LIBUSB_ENDPOINT_IN,
808 (unsigned char *)tpos, sizeof(struct dslogic_trigger_pos),
809 trigger_receive, (void *)sdi, 0);
810 if ((ret = libusb_submit_transfer(transfer)) < 0) {
811 sr_err("Failed to request trigger: %s.", libusb_error_name(ret));
812 libusb_free_transfer(transfer);
813 g_free(tpos);
814 return SR_ERR;
815 }
816
817 devc->transfers = g_try_malloc0(sizeof(*devc->transfers));
818 if (!devc->transfers) {
819 sr_err("USB trigger_pos transfer malloc failed.");
820 return SR_ERR_MALLOC;
821 }
822 devc->num_transfers = 1;
823 devc->submitted_transfers++;
824 devc->transfers[0] = transfer;
825
826 return ret;
827}
828
829static int dev_acquisition_start(const struct sr_dev_inst *sdi)
830{
831 struct sr_dev_driver *di;
832 struct drv_context *drvc;
833 struct dev_context *devc;
834 int timeout;
835
836 if (sdi->status != SR_ST_ACTIVE)
837 return SR_ERR_DEV_CLOSED;
838
839 di = sdi->driver;
840 drvc = di->context;
841 devc = sdi->priv;
842
843 devc->ctx = drvc->sr_ctx;
844 devc->sent_samples = 0;
845 devc->empty_transfer_count = 0;
846 devc->acq_aborted = FALSE;
847
848 timeout = dslogic_get_timeout(devc);
849 usb_source_add(sdi->session, devc->ctx, timeout, receive_data, drvc);
850
851 trigger_request(sdi);
852
853 return SR_OK;
854}
855
856static int dev_acquisition_stop(struct sr_dev_inst *sdi)
857{
858 dslogic_stop_acquisition(sdi);
859
860 dslogic_abort_acquisition(sdi->priv);
861
862 return SR_OK;
863}
864
865static struct sr_dev_driver dslogic_driver_info = {
866 .name = "dslogic",
867 .longname = "DreamSourceLabs DSLogic",
868 .api_version = 1,
869 .init = std_init,
870 .cleanup = std_cleanup,
871 .scan = scan,
872 .dev_list = std_dev_list,
873 .dev_clear = dev_clear,
874 .config_get = config_get,
875 .config_set = config_set,
876 .config_list = config_list,
877 .dev_open = dev_open,
878 .dev_close = dev_close,
879 .dev_acquisition_start = dev_acquisition_start,
880 .dev_acquisition_stop = dev_acquisition_stop,
881 .context = NULL,
882};
883SR_REGISTER_DEV_DRIVER(dslogic_driver_info);
Hardware access and backend lib