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c463dcf0 MC |
1 | /* |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2013 Marcus Comstedt <marcus@mc.pp.se> | |
5 | * | |
6 | * This program is free software: you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation, either version 3 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | ||
f6a21fa5 MC |
20 | #include <glib.h> |
21 | #include <libusb.h> | |
22 | #include <stdlib.h> | |
23 | #include <string.h> | |
db11d7d2 | 24 | #include <math.h> |
f6a21fa5 MC |
25 | #include "libsigrok.h" |
26 | #include "libsigrok-internal.h" | |
c463dcf0 MC |
27 | #include "protocol.h" |
28 | ||
f6a21fa5 MC |
29 | #define LOGIC16_VID 0x21a9 |
30 | #define LOGIC16_PID 0x1001 | |
31 | #define NUM_PROBES 16 | |
32 | ||
5eea4305 MC |
33 | #define USB_INTERFACE 0 |
34 | #define USB_CONFIGURATION 1 | |
35 | #define FX2_FIRMWARE FIRMWARE_DIR "/saleae-logic16-fx2.fw" | |
36 | ||
37 | #define MAX_RENUM_DELAY_MS 3000 | |
7b5daad4 | 38 | #define NUM_SIMUL_TRANSFERS 32 |
5eea4305 MC |
39 | |
40 | ||
c463dcf0 MC |
41 | SR_PRIV struct sr_dev_driver saleae_logic16_driver_info; |
42 | static struct sr_dev_driver *di = &saleae_logic16_driver_info; | |
43 | ||
b117363a MC |
44 | static const int32_t hwopts[] = { |
45 | SR_CONF_CONN, | |
46 | }; | |
47 | ||
48 | static const int32_t hwcaps[] = { | |
49 | SR_CONF_LOGIC_ANALYZER, | |
50 | SR_CONF_SAMPLERATE, | |
db11d7d2 | 51 | SR_CONF_VOLTAGE_THRESHOLD, |
b117363a MC |
52 | |
53 | /* These are really implemented in the driver, not the hardware. */ | |
54 | SR_CONF_LIMIT_SAMPLES, | |
55 | SR_CONF_CONTINUOUS, | |
56 | }; | |
57 | ||
f6a21fa5 MC |
58 | static const char *probe_names[NUM_PROBES + 1] = { |
59 | "0", "1", "2", "3", "4", "5", "6", "7", "8", | |
60 | "9", "10", "11", "12", "13", "14", "15", | |
61 | NULL, | |
62 | }; | |
c463dcf0 | 63 | |
db11d7d2 MC |
64 | static const struct { |
65 | enum voltage_range range; | |
66 | gdouble low; | |
67 | gdouble high; | |
68 | } volt_thresholds[] = { | |
69 | { VOLTAGE_RANGE_18_33_V, 0.7, 1.4 }, | |
70 | { VOLTAGE_RANGE_5_V, 1.4, 3.6 }, | |
71 | }; | |
72 | ||
7b5daad4 MC |
73 | static const uint64_t samplerates[] = { |
74 | SR_KHZ(500), | |
75 | SR_MHZ(1), | |
76 | SR_MHZ(2), | |
77 | SR_MHZ(4), | |
78 | SR_MHZ(5), | |
79 | SR_MHZ(8), | |
80 | SR_MHZ(10), | |
81 | SR_KHZ(12500), | |
82 | SR_MHZ(16), | |
83 | SR_MHZ(25), | |
84 | SR_MHZ(32), | |
85 | SR_MHZ(40), | |
86 | SR_MHZ(80), | |
87 | SR_MHZ(100), | |
88 | }; | |
89 | ||
c463dcf0 MC |
90 | static int init(struct sr_context *sr_ctx) |
91 | { | |
92 | return std_init(sr_ctx, di, LOG_PREFIX); | |
93 | } | |
94 | ||
5eea4305 MC |
95 | static gboolean check_conf_profile(libusb_device *dev) |
96 | { | |
97 | struct libusb_device_descriptor des; | |
98 | struct libusb_device_handle *hdl; | |
99 | gboolean ret; | |
100 | unsigned char strdesc[64]; | |
101 | ||
102 | hdl = NULL; | |
103 | ret = FALSE; | |
104 | while (!ret) { | |
105 | /* Assume the FW has not been loaded, unless proven wrong. */ | |
106 | if (libusb_get_device_descriptor(dev, &des) != 0) | |
107 | break; | |
108 | ||
109 | if (libusb_open(dev, &hdl) != 0) | |
110 | break; | |
111 | ||
112 | if (libusb_get_string_descriptor_ascii(hdl, | |
113 | des.iManufacturer, strdesc, sizeof(strdesc)) < 0) | |
114 | break; | |
115 | if (strcmp((const char *)strdesc, "Saleae LLC")) | |
116 | break; | |
117 | ||
118 | if (libusb_get_string_descriptor_ascii(hdl, | |
119 | des.iProduct, strdesc, sizeof(strdesc)) < 0) | |
120 | break; | |
121 | if (strcmp((const char *)strdesc, "Logic S/16")) | |
122 | break; | |
123 | ||
124 | /* If we made it here, it must be a configured Logic16. */ | |
125 | ret = TRUE; | |
126 | } | |
127 | if (hdl) | |
128 | libusb_close(hdl); | |
129 | ||
130 | return ret; | |
131 | } | |
132 | ||
c463dcf0 MC |
133 | static GSList *scan(GSList *options) |
134 | { | |
135 | struct drv_context *drvc; | |
f6a21fa5 MC |
136 | struct dev_context *devc; |
137 | struct sr_dev_inst *sdi; | |
5eea4305 | 138 | struct sr_usb_dev_inst *usb; |
f6a21fa5 | 139 | struct sr_probe *probe; |
5eea4305 MC |
140 | struct sr_config *src; |
141 | GSList *l, *devices, *conn_devices; | |
f6a21fa5 MC |
142 | struct libusb_device_descriptor des; |
143 | libusb_device **devlist; | |
5eea4305 MC |
144 | int devcnt, ret, i, j; |
145 | const char *conn; | |
c463dcf0 | 146 | |
c463dcf0 | 147 | drvc = di->priv; |
c463dcf0 | 148 | |
5eea4305 MC |
149 | conn = NULL; |
150 | for (l = options; l; l = l->next) { | |
151 | src = l->data; | |
152 | switch (src->key) { | |
153 | case SR_CONF_CONN: | |
154 | conn = g_variant_get_string(src->data, NULL); | |
155 | break; | |
156 | } | |
157 | } | |
158 | if (conn) | |
159 | conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn); | |
160 | else | |
161 | conn_devices = NULL; | |
162 | ||
163 | /* Find all Logic16 devices and upload firmware to them. */ | |
f6a21fa5 MC |
164 | devices = NULL; |
165 | libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist); | |
166 | for (i = 0; devlist[i]; i++) { | |
5eea4305 MC |
167 | if (conn) { |
168 | usb = NULL; | |
169 | for (l = conn_devices; l; l = l->next) { | |
170 | usb = l->data; | |
171 | if (usb->bus == libusb_get_bus_number(devlist[i]) | |
172 | && usb->address == libusb_get_device_address(devlist[i])) | |
173 | break; | |
174 | } | |
175 | if (!l) | |
176 | /* This device matched none of the ones that | |
177 | * matched the conn specification. */ | |
178 | continue; | |
179 | } | |
180 | ||
181 | if ((ret = libusb_get_device_descriptor( devlist[i], &des)) != 0) { | |
182 | sr_warn("Failed to get device descriptor: %s.", | |
183 | libusb_error_name(ret)); | |
f6a21fa5 MC |
184 | continue; |
185 | } | |
186 | ||
187 | if (des.idVendor != LOGIC16_VID || des.idProduct != LOGIC16_PID) | |
188 | continue; | |
189 | ||
190 | devcnt = g_slist_length(drvc->instances); | |
5eea4305 MC |
191 | sdi = sr_dev_inst_new(devcnt, SR_ST_INITIALIZING, |
192 | "Saleae", "Logic16", NULL); | |
193 | if (!sdi) | |
f6a21fa5 MC |
194 | return NULL; |
195 | sdi->driver = di; | |
196 | ||
f6a21fa5 MC |
197 | for (j = 0; probe_names[j]; j++) { |
198 | if (!(probe = sr_probe_new(j, SR_PROBE_LOGIC, TRUE, | |
199 | probe_names[j]))) | |
200 | return NULL; | |
201 | sdi->probes = g_slist_append(sdi->probes, probe); | |
202 | } | |
203 | ||
5eea4305 | 204 | if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) |
f6a21fa5 | 205 | return NULL; |
db11d7d2 | 206 | devc->selected_voltage_range = VOLTAGE_RANGE_18_33_V; |
5eea4305 | 207 | sdi->priv = devc; |
f6a21fa5 MC |
208 | drvc->instances = g_slist_append(drvc->instances, sdi); |
209 | devices = g_slist_append(devices, sdi); | |
5eea4305 MC |
210 | |
211 | if (check_conf_profile(devlist[i])) { | |
212 | /* Already has the firmware, so fix the new address. */ | |
213 | sr_dbg("Found a Logic16 device."); | |
214 | sdi->status = SR_ST_INACTIVE; | |
215 | sdi->inst_type = SR_INST_USB; | |
216 | sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]), | |
217 | libusb_get_device_address(devlist[i]), NULL); | |
218 | } else { | |
219 | if (ezusb_upload_firmware(devlist[i], USB_CONFIGURATION, | |
220 | FX2_FIRMWARE) == SR_OK) | |
221 | /* Store when this device's FW was updated. */ | |
222 | devc->fw_updated = g_get_monotonic_time(); | |
223 | else | |
224 | sr_err("Firmware upload failed for " | |
225 | "device %d.", devcnt); | |
226 | sdi->inst_type = SR_INST_USB; | |
227 | sdi->conn = sr_usb_dev_inst_new (libusb_get_bus_number(devlist[i]), | |
228 | 0xff, NULL); | |
229 | } | |
f6a21fa5 MC |
230 | } |
231 | libusb_free_device_list(devlist, 1); | |
5eea4305 | 232 | g_slist_free_full(conn_devices, (GDestroyNotify)sr_usb_dev_inst_free); |
c463dcf0 MC |
233 | |
234 | return devices; | |
235 | } | |
236 | ||
237 | static GSList *dev_list(void) | |
238 | { | |
239 | struct drv_context *drvc; | |
240 | ||
241 | drvc = di->priv; | |
242 | ||
243 | return drvc->instances; | |
244 | } | |
245 | ||
246 | static int dev_clear(void) | |
247 | { | |
248 | return std_dev_clear(di, NULL); | |
249 | } | |
250 | ||
5eea4305 MC |
251 | static int logic16_dev_open(struct sr_dev_inst *sdi) |
252 | { | |
253 | libusb_device **devlist; | |
254 | struct sr_usb_dev_inst *usb; | |
255 | struct libusb_device_descriptor des; | |
5eea4305 MC |
256 | struct drv_context *drvc; |
257 | int ret, skip, i, device_count; | |
258 | ||
259 | drvc = di->priv; | |
5eea4305 MC |
260 | usb = sdi->conn; |
261 | ||
262 | if (sdi->status == SR_ST_ACTIVE) | |
263 | /* Device is already in use. */ | |
264 | return SR_ERR; | |
265 | ||
266 | skip = 0; | |
267 | device_count = libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist); | |
268 | if (device_count < 0) { | |
269 | sr_err("Failed to get device list: %s.", | |
270 | libusb_error_name(device_count)); | |
271 | return SR_ERR; | |
272 | } | |
273 | ||
274 | for (i = 0; i < device_count; i++) { | |
275 | if ((ret = libusb_get_device_descriptor(devlist[i], &des))) { | |
276 | sr_err("Failed to get device descriptor: %s.", | |
277 | libusb_error_name(ret)); | |
278 | continue; | |
279 | } | |
280 | ||
281 | if (des.idVendor != LOGIC16_VID | |
282 | || des.idProduct != LOGIC16_PID) | |
283 | continue; | |
284 | ||
285 | if (sdi->status == SR_ST_INITIALIZING) { | |
286 | if (skip != sdi->index) { | |
287 | /* Skip devices of this type that aren't the one we want. */ | |
288 | skip += 1; | |
289 | continue; | |
290 | } | |
291 | } else if (sdi->status == SR_ST_INACTIVE) { | |
292 | /* | |
293 | * This device is fully enumerated, so we need to find | |
294 | * this device by vendor, product, bus and address. | |
295 | */ | |
296 | if (libusb_get_bus_number(devlist[i]) != usb->bus | |
297 | || libusb_get_device_address(devlist[i]) != usb->address) | |
298 | /* This is not the one. */ | |
299 | continue; | |
300 | } | |
301 | ||
302 | if (!(ret = libusb_open(devlist[i], &usb->devhdl))) { | |
303 | if (usb->address == 0xff) | |
304 | /* | |
305 | * First time we touch this device after FW | |
306 | * upload, so we don't know the address yet. | |
307 | */ | |
308 | usb->address = libusb_get_device_address(devlist[i]); | |
309 | } else { | |
310 | sr_err("Failed to open device: %s.", | |
311 | libusb_error_name(ret)); | |
312 | break; | |
313 | } | |
314 | ||
15abcf0f MC |
315 | if ((ret = saleae_logic16_init_device(sdi)) != SR_OK) { |
316 | sr_err("Failed to init device."); | |
317 | break; | |
318 | } | |
319 | ||
5eea4305 MC |
320 | sdi->status = SR_ST_ACTIVE; |
321 | sr_info("Opened device %d on %d.%d, " | |
322 | "interface %d.", | |
323 | sdi->index, usb->bus, usb->address, | |
324 | USB_INTERFACE); | |
325 | ||
326 | break; | |
327 | } | |
328 | libusb_free_device_list(devlist, 1); | |
329 | ||
330 | if (sdi->status != SR_ST_ACTIVE) | |
331 | return SR_ERR; | |
332 | ||
333 | return SR_OK; | |
334 | } | |
335 | ||
c463dcf0 MC |
336 | static int dev_open(struct sr_dev_inst *sdi) |
337 | { | |
5eea4305 MC |
338 | struct sr_usb_dev_inst *usb; |
339 | struct dev_context *devc; | |
340 | int ret; | |
341 | int64_t timediff_us, timediff_ms; | |
342 | ||
343 | devc = sdi->priv; | |
344 | usb = sdi->conn; | |
345 | ||
346 | /* | |
347 | * If the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS | |
348 | * milliseconds for the FX2 to renumerate. | |
349 | */ | |
350 | ret = SR_ERR; | |
351 | if (devc->fw_updated > 0) { | |
352 | sr_info("Waiting for device to reset."); | |
353 | /* Takes >= 300ms for the FX2 to be gone from the USB bus. */ | |
354 | g_usleep(300 * 1000); | |
355 | timediff_ms = 0; | |
356 | while (timediff_ms < MAX_RENUM_DELAY_MS) { | |
357 | if ((ret = logic16_dev_open(sdi)) == SR_OK) | |
358 | break; | |
359 | g_usleep(100 * 1000); | |
360 | ||
361 | timediff_us = g_get_monotonic_time() - devc->fw_updated; | |
362 | timediff_ms = timediff_us / 1000; | |
363 | sr_spew("Waited %" PRIi64 "ms.", timediff_ms); | |
364 | } | |
365 | if (ret != SR_OK) { | |
366 | sr_err("Device failed to renumerate."); | |
367 | return SR_ERR; | |
368 | } | |
369 | sr_info("Device came back after %" PRIi64 "ms.", timediff_ms); | |
370 | } else { | |
371 | sr_info("Firmware upload was not needed."); | |
372 | ret = logic16_dev_open(sdi); | |
373 | } | |
374 | ||
375 | if (ret != SR_OK) { | |
376 | sr_err("Unable to open device."); | |
377 | return SR_ERR; | |
378 | } | |
379 | ||
380 | ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE); | |
381 | if (ret != 0) { | |
382 | switch(ret) { | |
383 | case LIBUSB_ERROR_BUSY: | |
384 | sr_err("Unable to claim USB interface. Another " | |
385 | "program or driver has already claimed it."); | |
386 | break; | |
387 | case LIBUSB_ERROR_NO_DEVICE: | |
388 | sr_err("Device has been disconnected."); | |
389 | break; | |
390 | default: | |
391 | sr_err("Unable to claim interface: %s.", | |
392 | libusb_error_name(ret)); | |
393 | break; | |
394 | } | |
c463dcf0 | 395 | |
5eea4305 MC |
396 | return SR_ERR; |
397 | } | |
c463dcf0 | 398 | |
5eea4305 MC |
399 | if (devc->cur_samplerate == 0) { |
400 | /* Samplerate hasn't been set; default to the slowest one. */ | |
7b5daad4 | 401 | devc->cur_samplerate = samplerates[0]; |
5eea4305 | 402 | } |
c463dcf0 MC |
403 | |
404 | return SR_OK; | |
405 | } | |
406 | ||
407 | static int dev_close(struct sr_dev_inst *sdi) | |
408 | { | |
5eea4305 | 409 | struct sr_usb_dev_inst *usb; |
c463dcf0 | 410 | |
5eea4305 MC |
411 | usb = sdi->conn; |
412 | if (usb->devhdl == NULL) | |
413 | return SR_ERR; | |
c463dcf0 | 414 | |
5eea4305 MC |
415 | sr_info("Closing device %d on %d.%d interface %d.", |
416 | sdi->index, usb->bus, usb->address, USB_INTERFACE); | |
417 | libusb_release_interface(usb->devhdl, USB_INTERFACE); | |
418 | libusb_close(usb->devhdl); | |
419 | usb->devhdl = NULL; | |
c463dcf0 MC |
420 | sdi->status = SR_ST_INACTIVE; |
421 | ||
422 | return SR_OK; | |
423 | } | |
424 | ||
425 | static int cleanup(void) | |
426 | { | |
f6a21fa5 MC |
427 | int ret; |
428 | struct drv_context *drvc; | |
c463dcf0 | 429 | |
f6a21fa5 MC |
430 | if (!(drvc = di->priv)) |
431 | /* Can get called on an unused driver, doesn't matter. */ | |
432 | return SR_OK; | |
c463dcf0 | 433 | |
f6a21fa5 MC |
434 | ret = dev_clear(); |
435 | g_free(drvc); | |
436 | di->priv = NULL; | |
437 | ||
438 | return ret; | |
c463dcf0 MC |
439 | } |
440 | ||
441 | static int config_get(int key, GVariant **data, const struct sr_dev_inst *sdi) | |
442 | { | |
7b5daad4 | 443 | struct dev_context *devc; |
b117363a | 444 | struct sr_usb_dev_inst *usb; |
db11d7d2 | 445 | GVariant *range[2]; |
b117363a | 446 | char str[128]; |
c463dcf0 | 447 | int ret; |
db11d7d2 | 448 | unsigned i; |
c463dcf0 | 449 | |
c463dcf0 MC |
450 | ret = SR_OK; |
451 | switch (key) { | |
b117363a MC |
452 | case SR_CONF_CONN: |
453 | if (!sdi || !sdi->conn) | |
454 | return SR_ERR_ARG; | |
455 | usb = sdi->conn; | |
456 | if (usb->address == 255) | |
457 | /* Device still needs to re-enumerate after firmware | |
458 | * upload, so we don't know its (future) address. */ | |
459 | return SR_ERR; | |
460 | snprintf(str, 128, "%d.%d", usb->bus, usb->address); | |
461 | *data = g_variant_new_string(str); | |
462 | break; | |
7b5daad4 MC |
463 | case SR_CONF_SAMPLERATE: |
464 | if (!sdi) | |
465 | return SR_ERR; | |
466 | devc = sdi->priv; | |
467 | *data = g_variant_new_uint64(devc->cur_samplerate); | |
468 | break; | |
db11d7d2 MC |
469 | case SR_CONF_VOLTAGE_THRESHOLD: |
470 | if (!sdi) | |
471 | return SR_ERR; | |
472 | devc = sdi->priv; | |
473 | ret = SR_ERR; | |
474 | for (i = 0; i < ARRAY_SIZE(volt_thresholds); i++) | |
475 | if (devc->selected_voltage_range == | |
476 | volt_thresholds[i].range) { | |
477 | range[0] = g_variant_new_double(volt_thresholds[i].low); | |
478 | range[1] = g_variant_new_double(volt_thresholds[i].high); | |
479 | *data = g_variant_new_tuple(range, 2); | |
480 | ret = SR_OK; | |
481 | break; | |
482 | } | |
483 | break; | |
c463dcf0 MC |
484 | default: |
485 | return SR_ERR_NA; | |
486 | } | |
487 | ||
488 | return ret; | |
489 | } | |
490 | ||
491 | static int config_set(int key, GVariant *data, const struct sr_dev_inst *sdi) | |
492 | { | |
7b5daad4 | 493 | struct dev_context *devc; |
db11d7d2 | 494 | gdouble low, high; |
c463dcf0 | 495 | int ret; |
db11d7d2 | 496 | unsigned i; |
c463dcf0 | 497 | |
c463dcf0 MC |
498 | if (sdi->status != SR_ST_ACTIVE) |
499 | return SR_ERR_DEV_CLOSED; | |
500 | ||
7b5daad4 MC |
501 | devc = sdi->priv; |
502 | ||
c463dcf0 MC |
503 | ret = SR_OK; |
504 | switch (key) { | |
7b5daad4 MC |
505 | case SR_CONF_SAMPLERATE: |
506 | devc->cur_samplerate = g_variant_get_uint64(data); | |
507 | break; | |
508 | case SR_CONF_LIMIT_SAMPLES: | |
509 | devc->limit_samples = g_variant_get_uint64(data); | |
510 | break; | |
db11d7d2 MC |
511 | case SR_CONF_VOLTAGE_THRESHOLD: |
512 | g_variant_get(data, "(dd)", &low, &high); | |
513 | ret = SR_ERR_ARG; | |
514 | for (i = 0; i < ARRAY_SIZE(volt_thresholds); i++) { | |
515 | if (fabs(volt_thresholds[i].low - low) < 0.1 && | |
516 | fabs(volt_thresholds[i].high - high) < 0.1) { | |
517 | devc->selected_voltage_range = | |
518 | volt_thresholds[i].range; | |
519 | ret = SR_OK; | |
520 | break; | |
521 | } | |
522 | } | |
523 | break; | |
c463dcf0 MC |
524 | default: |
525 | ret = SR_ERR_NA; | |
526 | } | |
527 | ||
528 | return ret; | |
529 | } | |
530 | ||
531 | static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi) | |
532 | { | |
db11d7d2 | 533 | GVariant *gvar, *range[2]; |
7b5daad4 | 534 | GVariantBuilder gvb; |
c463dcf0 | 535 | int ret; |
db11d7d2 | 536 | unsigned i; |
c463dcf0 MC |
537 | |
538 | (void)sdi; | |
c463dcf0 MC |
539 | |
540 | ret = SR_OK; | |
541 | switch (key) { | |
b117363a MC |
542 | case SR_CONF_SCAN_OPTIONS: |
543 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, | |
544 | hwopts, ARRAY_SIZE(hwopts), sizeof(int32_t)); | |
545 | break; | |
546 | case SR_CONF_DEVICE_OPTIONS: | |
547 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, | |
548 | hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t)); | |
549 | break; | |
7b5daad4 MC |
550 | case SR_CONF_SAMPLERATE: |
551 | g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}")); | |
552 | gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), samplerates, | |
553 | ARRAY_SIZE(samplerates), sizeof(uint64_t)); | |
554 | g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar); | |
555 | *data = g_variant_builder_end(&gvb); | |
db11d7d2 MC |
556 | break; |
557 | case SR_CONF_VOLTAGE_THRESHOLD: | |
558 | g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY); | |
559 | for (i = 0; i < ARRAY_SIZE(volt_thresholds); i++) { | |
560 | range[0] = g_variant_new_double(volt_thresholds[i].low); | |
561 | range[1] = g_variant_new_double(volt_thresholds[i].high); | |
562 | gvar = g_variant_new_tuple(range, 2); | |
563 | g_variant_builder_add_value(&gvb, gvar); | |
564 | } | |
565 | *data = g_variant_builder_end(&gvb); | |
7b5daad4 | 566 | break; |
c463dcf0 MC |
567 | default: |
568 | return SR_ERR_NA; | |
569 | } | |
570 | ||
571 | return ret; | |
572 | } | |
573 | ||
7b5daad4 MC |
574 | static void abort_acquisition(struct dev_context *devc) |
575 | { | |
576 | int i; | |
577 | ||
578 | devc->num_samples = -1; | |
579 | ||
580 | for (i = devc->num_transfers - 1; i >= 0; i--) { | |
581 | if (devc->transfers[i]) | |
582 | libusb_cancel_transfer(devc->transfers[i]); | |
583 | } | |
584 | } | |
585 | ||
586 | static unsigned int bytes_per_ms(struct dev_context *devc) | |
587 | { | |
588 | return devc->cur_samplerate * devc->num_channels / 8000; | |
589 | } | |
590 | ||
591 | static size_t get_buffer_size(struct dev_context *devc) | |
592 | { | |
593 | size_t s; | |
594 | ||
595 | /* | |
596 | * The buffer should be large enough to hold 10ms of data and | |
597 | * a multiple of 512. | |
598 | */ | |
599 | s = 10 * bytes_per_ms(devc); | |
600 | return (s + 511) & ~511; | |
601 | } | |
602 | ||
603 | static unsigned int get_number_of_transfers(struct dev_context *devc) | |
604 | { | |
605 | unsigned int n; | |
606 | ||
607 | /* Total buffer size should be able to hold about 500ms of data. */ | |
608 | n = 500 * bytes_per_ms(devc) / get_buffer_size(devc); | |
609 | ||
610 | if (n > NUM_SIMUL_TRANSFERS) | |
611 | return NUM_SIMUL_TRANSFERS; | |
612 | ||
613 | return n; | |
614 | } | |
615 | ||
616 | static unsigned int get_timeout(struct dev_context *devc) | |
617 | { | |
618 | size_t total_size; | |
619 | unsigned int timeout; | |
620 | ||
621 | total_size = get_buffer_size(devc) * get_number_of_transfers(devc); | |
622 | timeout = total_size / bytes_per_ms(devc); | |
623 | return timeout + timeout / 4; /* Leave a headroom of 25% percent. */ | |
624 | } | |
625 | ||
626 | static int configure_probes(const struct sr_dev_inst *sdi) | |
627 | { | |
628 | struct dev_context *devc; | |
629 | struct sr_probe *probe; | |
630 | GSList *l; | |
631 | uint16_t probe_bit; | |
632 | ||
633 | devc = sdi->priv; | |
634 | ||
635 | devc->cur_channels = 0; | |
636 | devc->num_channels = 0; | |
637 | for (l = sdi->probes; l; l = l->next) { | |
638 | probe = (struct sr_probe *)l->data; | |
639 | if (probe->enabled == FALSE) | |
640 | continue; | |
641 | ||
642 | probe_bit = 1 << (probe->index); | |
643 | ||
644 | devc->cur_channels |= probe_bit; | |
645 | ||
646 | #ifdef WORDS_BIGENDIAN | |
647 | /* Output logic data should be stored in little endian | |
648 | format. To speed things up during conversion, do the | |
649 | switcharoo here instead. */ | |
650 | ||
651 | probe_bit = 1 << (probe->index ^ 8); | |
652 | #endif | |
653 | ||
654 | devc->channel_masks[devc->num_channels ++] = probe_bit; | |
655 | } | |
656 | ||
657 | return SR_OK; | |
658 | } | |
659 | ||
660 | static int receive_data(int fd, int revents, void *cb_data) | |
661 | { | |
662 | struct timeval tv; | |
663 | struct dev_context *devc; | |
664 | struct drv_context *drvc; | |
665 | const struct sr_dev_inst *sdi; | |
666 | ||
667 | (void)fd; | |
668 | (void)revents; | |
669 | ||
670 | sdi = cb_data; | |
671 | drvc = di->priv; | |
672 | devc = sdi->priv; | |
673 | ||
674 | tv.tv_sec = tv.tv_usec = 0; | |
675 | libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv); | |
676 | ||
677 | if (devc->num_samples == -2) { | |
678 | saleae_logic16_abort_acquisition(sdi); | |
679 | abort_acquisition(devc); | |
680 | } | |
681 | ||
682 | return TRUE; | |
683 | } | |
684 | ||
c463dcf0 | 685 | static int dev_acquisition_start(const struct sr_dev_inst *sdi, |
7b5daad4 | 686 | void *cb_data) |
c463dcf0 | 687 | { |
7b5daad4 MC |
688 | struct dev_context *devc; |
689 | struct drv_context *drvc; | |
690 | struct sr_usb_dev_inst *usb; | |
691 | struct libusb_transfer *transfer; | |
692 | const struct libusb_pollfd **lupfd; | |
693 | unsigned int i, timeout, num_transfers; | |
694 | int ret; | |
695 | unsigned char *buf; | |
696 | size_t size, convsize; | |
c463dcf0 MC |
697 | |
698 | if (sdi->status != SR_ST_ACTIVE) | |
699 | return SR_ERR_DEV_CLOSED; | |
700 | ||
7b5daad4 MC |
701 | drvc = di->priv; |
702 | devc = sdi->priv; | |
703 | usb = sdi->conn; | |
704 | ||
705 | /* Configures devc->cur_channels */ | |
706 | if (configure_probes(sdi) != SR_OK) { | |
707 | sr_err("Failed to configure probes."); | |
708 | return SR_ERR; | |
709 | } | |
710 | ||
711 | devc->cb_data = cb_data; | |
712 | devc->num_samples = 0; | |
713 | devc->empty_transfer_count = 0; | |
714 | devc->cur_channel = 0; | |
715 | memset(devc->channel_data, 0, sizeof(devc->channel_data)); | |
716 | ||
717 | timeout = get_timeout(devc); | |
718 | num_transfers = get_number_of_transfers(devc); | |
719 | size = get_buffer_size(devc); | |
720 | convsize = (size / devc->num_channels + 2) * 16; | |
721 | devc->submitted_transfers = 0; | |
722 | devc->usbfd = NULL; | |
723 | ||
724 | devc->convbuffer_size = convsize; | |
725 | if (!(devc->convbuffer = g_try_malloc(convsize))) { | |
726 | sr_err("Conversion buffer malloc failed."); | |
727 | return SR_ERR_MALLOC; | |
728 | } | |
729 | ||
730 | devc->transfers = g_try_malloc0(sizeof(*devc->transfers) * num_transfers); | |
731 | if (!devc->transfers) { | |
732 | sr_err("USB transfers malloc failed."); | |
733 | g_free(devc->convbuffer); | |
734 | return SR_ERR_MALLOC; | |
735 | } | |
736 | ||
737 | if ((ret = saleae_logic16_setup_acquisition(sdi, devc->cur_samplerate, | |
738 | devc->cur_channels)) != SR_OK) { | |
739 | g_free(devc->transfers); | |
740 | g_free(devc->convbuffer); | |
741 | return ret; | |
742 | } | |
743 | ||
744 | devc->num_transfers = num_transfers; | |
745 | for (i = 0; i < num_transfers; i++) { | |
746 | if (!(buf = g_try_malloc(size))) { | |
747 | sr_err("USB transfer buffer malloc failed."); | |
748 | if (devc->submitted_transfers) | |
749 | abort_acquisition(devc); | |
750 | else { | |
751 | g_free(devc->transfers); | |
752 | g_free(devc->convbuffer); | |
753 | } | |
754 | return SR_ERR_MALLOC; | |
755 | } | |
756 | transfer = libusb_alloc_transfer(0); | |
757 | libusb_fill_bulk_transfer(transfer, usb->devhdl, | |
758 | 2 | LIBUSB_ENDPOINT_IN, buf, size, | |
759 | saleae_logic16_receive_transfer, devc, timeout); | |
760 | if ((ret = libusb_submit_transfer(transfer)) != 0) { | |
761 | sr_err("Failed to submit transfer: %s.", | |
762 | libusb_error_name(ret)); | |
763 | libusb_free_transfer(transfer); | |
764 | g_free(buf); | |
765 | abort_acquisition(devc); | |
766 | return SR_ERR; | |
767 | } | |
768 | devc->transfers[i] = transfer; | |
769 | devc->submitted_transfers++; | |
770 | } | |
771 | ||
772 | lupfd = libusb_get_pollfds(drvc->sr_ctx->libusb_ctx); | |
773 | for (i = 0; lupfd[i]; i++); | |
774 | if (!(devc->usbfd = g_try_malloc(sizeof(struct libusb_pollfd) * (i + 1)))) { | |
775 | abort_acquisition(devc); | |
776 | free(lupfd); | |
777 | return SR_ERR; | |
778 | } | |
779 | for (i = 0; lupfd[i]; i++) { | |
780 | sr_source_add(lupfd[i]->fd, lupfd[i]->events, | |
781 | timeout, receive_data, (void *)sdi); | |
782 | devc->usbfd[i] = lupfd[i]->fd; | |
783 | } | |
784 | devc->usbfd[i] = -1; | |
785 | free(lupfd); | |
786 | ||
787 | /* Send header packet to the session bus. */ | |
788 | std_session_send_df_header(cb_data, LOG_PREFIX); | |
789 | ||
790 | if ((ret = saleae_logic16_start_acquisition(sdi)) != SR_OK) { | |
791 | abort_acquisition(devc); | |
792 | return ret; | |
793 | } | |
c463dcf0 MC |
794 | |
795 | return SR_OK; | |
796 | } | |
797 | ||
798 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) | |
799 | { | |
7b5daad4 MC |
800 | int ret; |
801 | ||
c463dcf0 MC |
802 | (void)cb_data; |
803 | ||
804 | if (sdi->status != SR_ST_ACTIVE) | |
805 | return SR_ERR_DEV_CLOSED; | |
806 | ||
7b5daad4 | 807 | ret = saleae_logic16_abort_acquisition(sdi); |
c463dcf0 | 808 | |
7b5daad4 MC |
809 | abort_acquisition(sdi->priv); |
810 | ||
811 | return ret; | |
c463dcf0 MC |
812 | } |
813 | ||
814 | SR_PRIV struct sr_dev_driver saleae_logic16_driver_info = { | |
815 | .name = "saleae-logic16", | |
816 | .longname = "Saleae Logic16", | |
817 | .api_version = 1, | |
818 | .init = init, | |
819 | .cleanup = cleanup, | |
820 | .scan = scan, | |
821 | .dev_list = dev_list, | |
822 | .dev_clear = dev_clear, | |
823 | .config_get = config_get, | |
824 | .config_set = config_set, | |
825 | .config_list = config_list, | |
826 | .dev_open = dev_open, | |
827 | .dev_close = dev_close, | |
828 | .dev_acquisition_start = dev_acquisition_start, | |
829 | .dev_acquisition_stop = dev_acquisition_stop, | |
830 | .priv = NULL, | |
831 | }; |