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