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1 | /* | |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2013 Marc Schink <sigrok-dev@marcschink.de> | |
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 | ||
20 | #include "protocol.h" | |
21 | ||
22 | static const int hwcaps[] = { | |
23 | SR_CONF_LOGIC_ANALYZER, | |
24 | SR_CONF_SAMPLERATE, | |
25 | SR_CONF_LIMIT_SAMPLES, | |
26 | SR_CONF_TRIGGER_MATCH, | |
27 | SR_CONF_CAPTURE_RATIO, | |
28 | }; | |
29 | ||
30 | static const int32_t trigger_matches[] = { | |
31 | SR_TRIGGER_RISING, | |
32 | SR_TRIGGER_FALLING, | |
33 | SR_TRIGGER_EDGE, | |
34 | }; | |
35 | ||
36 | SR_PRIV const uint64_t sl2_samplerates[NUM_SAMPLERATES] = { | |
37 | SR_KHZ(1.25), | |
38 | SR_KHZ(10), | |
39 | SR_KHZ(50), | |
40 | SR_KHZ(100), | |
41 | SR_KHZ(250), | |
42 | SR_KHZ(500), | |
43 | SR_MHZ(1), | |
44 | SR_MHZ(2.5), | |
45 | SR_MHZ(5), | |
46 | SR_MHZ(10), | |
47 | SR_MHZ(20), | |
48 | }; | |
49 | ||
50 | static const char *channel_names[NUM_CHANNELS + 1] = { | |
51 | "0", "1", "2", "3", | |
52 | NULL, | |
53 | }; | |
54 | ||
55 | SR_PRIV struct sr_dev_driver ikalogic_scanalogic2_driver_info; | |
56 | static struct sr_dev_driver *di = &ikalogic_scanalogic2_driver_info; | |
57 | ||
58 | static int init(struct sr_context *sr_ctx) | |
59 | { | |
60 | return std_init(sr_ctx, di, LOG_PREFIX); | |
61 | } | |
62 | ||
63 | static GSList *scan(GSList *options) | |
64 | { | |
65 | GSList *usb_devices, *devices, *l; | |
66 | struct drv_context *drvc; | |
67 | struct sr_dev_inst *sdi; | |
68 | struct sr_channel *ch; | |
69 | struct dev_context *devc; | |
70 | struct sr_usb_dev_inst *usb; | |
71 | struct device_info dev_info; | |
72 | int ret, device_index, i; | |
73 | char *fw_ver_str; | |
74 | ||
75 | (void)options; | |
76 | ||
77 | devices = NULL; | |
78 | drvc = di->priv; | |
79 | drvc->instances = NULL; | |
80 | device_index = 0; | |
81 | ||
82 | usb_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, USB_VID_PID); | |
83 | ||
84 | if (usb_devices == NULL) | |
85 | return NULL; | |
86 | ||
87 | for (l = usb_devices; l; l = l->next) { | |
88 | usb = l->data; | |
89 | ||
90 | if ((ret = sl2_get_device_info(*usb, &dev_info)) < 0) { | |
91 | sr_warn("Failed to get device information: %d.", ret); | |
92 | sr_usb_dev_inst_free(usb); | |
93 | continue; | |
94 | } | |
95 | ||
96 | if (!(devc = g_try_malloc(sizeof(struct dev_context)))) { | |
97 | sr_err("Device instance malloc failed."); | |
98 | sr_usb_dev_inst_free(usb); | |
99 | continue; | |
100 | } | |
101 | ||
102 | if (!(devc->xfer_in = libusb_alloc_transfer(0))) { | |
103 | sr_err("Transfer malloc failed."); | |
104 | sr_usb_dev_inst_free(usb); | |
105 | g_free(devc); | |
106 | continue; | |
107 | } | |
108 | ||
109 | if (!(devc->xfer_out = libusb_alloc_transfer(0))) { | |
110 | sr_err("Transfer malloc failed."); | |
111 | sr_usb_dev_inst_free(usb); | |
112 | libusb_free_transfer(devc->xfer_in); | |
113 | g_free(devc); | |
114 | continue; | |
115 | } | |
116 | ||
117 | fw_ver_str = g_strdup_printf("%u.%u", dev_info.fw_ver_major, | |
118 | dev_info.fw_ver_minor); | |
119 | if (!fw_ver_str) { | |
120 | sr_err("Firmware string malloc failed."); | |
121 | sr_usb_dev_inst_free(usb); | |
122 | libusb_free_transfer(devc->xfer_in); | |
123 | libusb_free_transfer(devc->xfer_out); | |
124 | g_free(devc); | |
125 | continue; | |
126 | } | |
127 | ||
128 | sdi = sr_dev_inst_new(device_index, SR_ST_INACTIVE, VENDOR_NAME, | |
129 | MODEL_NAME, fw_ver_str); | |
130 | g_free(fw_ver_str); | |
131 | if (!sdi) { | |
132 | sr_err("sr_dev_inst_new failed."); | |
133 | sr_usb_dev_inst_free(usb); | |
134 | libusb_free_transfer(devc->xfer_in); | |
135 | libusb_free_transfer(devc->xfer_out); | |
136 | g_free(devc); | |
137 | continue; | |
138 | } | |
139 | ||
140 | sdi->priv = devc; | |
141 | sdi->driver = di; | |
142 | sdi->inst_type = SR_INST_USB; | |
143 | sdi->conn = usb; | |
144 | ||
145 | for (i = 0; channel_names[i]; i++) { | |
146 | ch = sr_channel_new(i, SR_CHANNEL_LOGIC, TRUE, | |
147 | channel_names[i]); | |
148 | sdi->channels = g_slist_append(sdi->channels, ch); | |
149 | devc->channels[i] = ch; | |
150 | } | |
151 | ||
152 | devc->state = STATE_IDLE; | |
153 | devc->next_state = STATE_IDLE; | |
154 | ||
155 | /* Set default samplerate. */ | |
156 | sl2_set_samplerate(sdi, DEFAULT_SAMPLERATE); | |
157 | ||
158 | /* Set default capture ratio. */ | |
159 | devc->capture_ratio = 0; | |
160 | ||
161 | /* Set default after trigger delay. */ | |
162 | devc->after_trigger_delay = 0; | |
163 | ||
164 | memset(devc->xfer_buf_in, 0, LIBUSB_CONTROL_SETUP_SIZE + | |
165 | PACKET_LENGTH); | |
166 | memset(devc->xfer_buf_out, 0, LIBUSB_CONTROL_SETUP_SIZE + | |
167 | PACKET_LENGTH); | |
168 | ||
169 | libusb_fill_control_setup(devc->xfer_buf_in, | |
170 | USB_REQUEST_TYPE_IN, USB_HID_GET_REPORT, | |
171 | USB_HID_REPORT_TYPE_FEATURE, USB_INTERFACE, | |
172 | PACKET_LENGTH); | |
173 | libusb_fill_control_setup(devc->xfer_buf_out, | |
174 | USB_REQUEST_TYPE_OUT, USB_HID_SET_REPORT, | |
175 | USB_HID_REPORT_TYPE_FEATURE, USB_INTERFACE, | |
176 | PACKET_LENGTH); | |
177 | ||
178 | devc->xfer_data_in = devc->xfer_buf_in + | |
179 | LIBUSB_CONTROL_SETUP_SIZE; | |
180 | devc->xfer_data_out = devc->xfer_buf_out + | |
181 | LIBUSB_CONTROL_SETUP_SIZE; | |
182 | ||
183 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
184 | devices = g_slist_append(devices, sdi); | |
185 | ||
186 | device_index++; | |
187 | } | |
188 | ||
189 | g_slist_free(usb_devices); | |
190 | ||
191 | return devices; | |
192 | } | |
193 | ||
194 | static GSList *dev_list(void) | |
195 | { | |
196 | return ((struct drv_context *)(di->priv))->instances; | |
197 | } | |
198 | ||
199 | static void clear_dev_context(void *priv) | |
200 | { | |
201 | struct dev_context *devc; | |
202 | ||
203 | devc = priv; | |
204 | ||
205 | sr_dbg("Device context cleared."); | |
206 | ||
207 | libusb_free_transfer(devc->xfer_in); | |
208 | libusb_free_transfer(devc->xfer_out); | |
209 | g_free(devc); | |
210 | } | |
211 | ||
212 | static int dev_clear(void) | |
213 | { | |
214 | return std_dev_clear(di, &clear_dev_context); | |
215 | } | |
216 | ||
217 | static int dev_open(struct sr_dev_inst *sdi) | |
218 | { | |
219 | struct drv_context *drvc; | |
220 | struct dev_context *devc; | |
221 | struct sr_usb_dev_inst *usb; | |
222 | uint8_t buffer[PACKET_LENGTH]; | |
223 | int ret; | |
224 | ||
225 | if (!(drvc = di->priv)) { | |
226 | sr_err("Driver was not initialized."); | |
227 | return SR_ERR; | |
228 | } | |
229 | ||
230 | usb = sdi->conn; | |
231 | devc = sdi->priv; | |
232 | ||
233 | if (sr_usb_open(drvc->sr_ctx->libusb_ctx, usb) != SR_OK) | |
234 | return SR_ERR; | |
235 | ||
236 | /* | |
237 | * Determine if a kernel driver is active on this interface and, if so, | |
238 | * detach it. | |
239 | */ | |
240 | if (libusb_kernel_driver_active(usb->devhdl, USB_INTERFACE) == 1) { | |
241 | ret = libusb_detach_kernel_driver(usb->devhdl, USB_INTERFACE); | |
242 | if (ret < 0) { | |
243 | sr_err("Failed to detach kernel driver: %s.", | |
244 | libusb_error_name(ret)); | |
245 | return SR_ERR; | |
246 | } | |
247 | } | |
248 | ||
249 | if ((ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE)) < 0) { | |
250 | sr_err("Failed to claim interface: %s.", | |
251 | libusb_error_name(ret)); | |
252 | return SR_ERR; | |
253 | } | |
254 | ||
255 | libusb_fill_control_transfer(devc->xfer_in, usb->devhdl, | |
256 | devc->xfer_buf_in, sl2_receive_transfer_in, | |
257 | sdi, USB_TIMEOUT); | |
258 | ||
259 | libusb_fill_control_transfer(devc->xfer_out, usb->devhdl, | |
260 | devc->xfer_buf_out, sl2_receive_transfer_out, | |
261 | sdi, USB_TIMEOUT); | |
262 | ||
263 | memset(buffer, 0, sizeof(buffer)); | |
264 | ||
265 | buffer[0] = CMD_RESET; | |
266 | if ((ret = sl2_transfer_out(usb->devhdl, buffer)) != PACKET_LENGTH) { | |
267 | sr_err("Device reset failed: %s.", libusb_error_name(ret)); | |
268 | return SR_ERR; | |
269 | } | |
270 | ||
271 | /* | |
272 | * Set the device to idle state. If the device is not in idle state it | |
273 | * possibly will reset itself after a few seconds without being used | |
274 | * and thereby close the connection. | |
275 | */ | |
276 | buffer[0] = CMD_IDLE; | |
277 | if ((ret = sl2_transfer_out(usb->devhdl, buffer)) != PACKET_LENGTH) { | |
278 | sr_err("Failed to set device in idle state: %s.", | |
279 | libusb_error_name(ret)); | |
280 | return SR_ERR; | |
281 | } | |
282 | ||
283 | sdi->status = SR_ST_ACTIVE; | |
284 | ||
285 | return SR_OK; | |
286 | } | |
287 | ||
288 | static int dev_close(struct sr_dev_inst *sdi) | |
289 | { | |
290 | struct sr_usb_dev_inst *usb; | |
291 | ||
292 | if (!di->priv) { | |
293 | sr_err("Driver was not initialized."); | |
294 | return SR_ERR; | |
295 | } | |
296 | ||
297 | usb = sdi->conn; | |
298 | ||
299 | if (!usb->devhdl) | |
300 | return SR_OK; | |
301 | ||
302 | libusb_release_interface(usb->devhdl, USB_INTERFACE); | |
303 | libusb_close(usb->devhdl); | |
304 | ||
305 | usb->devhdl = NULL; | |
306 | sdi->status = SR_ST_INACTIVE; | |
307 | ||
308 | return SR_OK; | |
309 | } | |
310 | ||
311 | static int cleanup(void) | |
312 | { | |
313 | return dev_clear(); | |
314 | } | |
315 | ||
316 | static int config_get(int key, GVariant **data, const struct sr_dev_inst *sdi, | |
317 | const struct sr_channel_group *cg) | |
318 | { | |
319 | struct dev_context *devc; | |
320 | int ret; | |
321 | ||
322 | (void)cg; | |
323 | ||
324 | ret = SR_OK; | |
325 | devc = sdi->priv; | |
326 | ||
327 | switch (key) { | |
328 | case SR_CONF_SAMPLERATE: | |
329 | *data = g_variant_new_uint64(devc->samplerate); | |
330 | break; | |
331 | case SR_CONF_CAPTURE_RATIO: | |
332 | *data = g_variant_new_uint64(devc->capture_ratio); | |
333 | break; | |
334 | default: | |
335 | return SR_ERR_NA; | |
336 | } | |
337 | ||
338 | return ret; | |
339 | } | |
340 | ||
341 | static int config_set(int key, GVariant *data, const struct sr_dev_inst *sdi, | |
342 | const struct sr_channel_group *cg) | |
343 | { | |
344 | uint64_t samplerate, limit_samples, capture_ratio; | |
345 | int ret; | |
346 | ||
347 | (void)cg; | |
348 | ||
349 | if (sdi->status != SR_ST_ACTIVE) | |
350 | return SR_ERR_DEV_CLOSED; | |
351 | ||
352 | ret = SR_OK; | |
353 | ||
354 | switch (key) { | |
355 | case SR_CONF_LIMIT_SAMPLES: | |
356 | limit_samples = g_variant_get_uint64(data); | |
357 | ret = sl2_set_limit_samples(sdi, limit_samples); | |
358 | break; | |
359 | case SR_CONF_SAMPLERATE: | |
360 | samplerate = g_variant_get_uint64(data); | |
361 | ret = sl2_set_samplerate(sdi, samplerate); | |
362 | break; | |
363 | case SR_CONF_CAPTURE_RATIO: | |
364 | capture_ratio = g_variant_get_uint64(data); | |
365 | ret = sl2_set_capture_ratio(sdi, capture_ratio); | |
366 | break; | |
367 | default: | |
368 | return SR_ERR_NA; | |
369 | } | |
370 | ||
371 | return ret; | |
372 | } | |
373 | ||
374 | static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi, | |
375 | const struct sr_channel_group *cg) | |
376 | { | |
377 | GVariant *gvar, *grange[2]; | |
378 | GVariantBuilder gvb; | |
379 | int ret; | |
380 | ||
381 | (void)sdi; | |
382 | (void)cg; | |
383 | ||
384 | ret = SR_OK; | |
385 | ||
386 | switch (key) { | |
387 | case SR_CONF_DEVICE_OPTIONS: | |
388 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, hwcaps, | |
389 | ARRAY_SIZE(hwcaps), sizeof(int32_t)); | |
390 | break; | |
391 | case SR_CONF_SAMPLERATE: | |
392 | g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}")); | |
393 | gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), | |
394 | sl2_samplerates, ARRAY_SIZE(sl2_samplerates), | |
395 | sizeof(uint64_t)); | |
396 | g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar); | |
397 | *data = g_variant_builder_end(&gvb); | |
398 | break; | |
399 | case SR_CONF_TRIGGER_MATCH: | |
400 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, | |
401 | trigger_matches, ARRAY_SIZE(trigger_matches), | |
402 | sizeof(int32_t)); | |
403 | break; | |
404 | case SR_CONF_LIMIT_SAMPLES: | |
405 | grange[0] = g_variant_new_uint64(0); | |
406 | grange[1] = g_variant_new_uint64(MAX_SAMPLES); | |
407 | *data = g_variant_new_tuple(grange, 2); | |
408 | break; | |
409 | default: | |
410 | return SR_ERR_NA; | |
411 | } | |
412 | ||
413 | return ret; | |
414 | } | |
415 | ||
416 | static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data) | |
417 | { | |
418 | struct drv_context *drvc; | |
419 | struct dev_context *devc; | |
420 | uint16_t trigger_bytes, tmp; | |
421 | unsigned int i, j; | |
422 | int ret; | |
423 | ||
424 | if (sdi->status != SR_ST_ACTIVE) | |
425 | return SR_ERR_DEV_CLOSED; | |
426 | ||
427 | devc = sdi->priv; | |
428 | drvc = di->priv; | |
429 | ||
430 | devc->cb_data = cb_data; | |
431 | devc->wait_data_ready_locked = TRUE; | |
432 | devc->stopping_in_progress = FALSE; | |
433 | devc->transfer_error = FALSE; | |
434 | devc->samples_processed = 0; | |
435 | devc->channel = 0; | |
436 | devc->sample_packet = 0; | |
437 | ||
438 | /* | |
439 | * The trigger must be configured first because the calculation of the | |
440 | * pre and post trigger samples depends on a configured trigger. | |
441 | */ | |
442 | sl2_convert_trigger(sdi); | |
443 | sl2_calculate_trigger_samples(sdi); | |
444 | ||
445 | trigger_bytes = devc->pre_trigger_bytes + devc->post_trigger_bytes; | |
446 | ||
447 | /* Calculate the number of expected sample packets. */ | |
448 | devc->num_sample_packets = trigger_bytes / PACKET_NUM_SAMPLE_BYTES; | |
449 | ||
450 | /* Round up the number of expected sample packets. */ | |
451 | if (trigger_bytes % PACKET_NUM_SAMPLE_BYTES != 0) | |
452 | devc->num_sample_packets++; | |
453 | ||
454 | devc->num_enabled_channels = 0; | |
455 | ||
456 | /* | |
457 | * Count the number of enabled channels and number them for a sequential | |
458 | * access. | |
459 | */ | |
460 | for (i = 0, j = 0; i < NUM_CHANNELS; i++) { | |
461 | if (devc->channels[i]->enabled) { | |
462 | devc->num_enabled_channels++; | |
463 | devc->channel_map[j] = i; | |
464 | j++; | |
465 | } | |
466 | } | |
467 | ||
468 | sr_dbg("Number of enabled channels: %i.", devc->num_enabled_channels); | |
469 | ||
470 | /* Set up the transfer buffer for the acquisition. */ | |
471 | devc->xfer_data_out[0] = CMD_SAMPLE; | |
472 | devc->xfer_data_out[1] = 0x00; | |
473 | ||
474 | tmp = GUINT16_TO_LE(devc->pre_trigger_bytes); | |
475 | memcpy(devc->xfer_data_out + 2, &tmp, sizeof(tmp)); | |
476 | ||
477 | tmp = GUINT16_TO_LE(devc->post_trigger_bytes); | |
478 | memcpy(devc->xfer_data_out + 4, &tmp, sizeof(tmp)); | |
479 | ||
480 | devc->xfer_data_out[6] = devc->samplerate_id; | |
481 | devc->xfer_data_out[7] = devc->trigger_type; | |
482 | devc->xfer_data_out[8] = devc->trigger_channel; | |
483 | devc->xfer_data_out[9] = 0x00; | |
484 | ||
485 | tmp = GUINT16_TO_LE(devc->after_trigger_delay); | |
486 | memcpy(devc->xfer_data_out + 10, &tmp, sizeof(tmp)); | |
487 | ||
488 | if ((ret = libusb_submit_transfer(devc->xfer_out)) != 0) { | |
489 | sr_err("Submit transfer failed: %s.", libusb_error_name(ret)); | |
490 | return SR_ERR; | |
491 | } | |
492 | ||
493 | usb_source_add(drvc->sr_ctx, 100, ikalogic_scanalogic2_receive_data, (void *)sdi); | |
494 | ||
495 | sr_dbg("Acquisition started successfully."); | |
496 | ||
497 | /* Send header packet to the session bus. */ | |
498 | std_session_send_df_header(cb_data, LOG_PREFIX); | |
499 | ||
500 | devc->next_state = STATE_SAMPLE; | |
501 | ||
502 | return SR_OK; | |
503 | } | |
504 | ||
505 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) | |
506 | { | |
507 | (void)cb_data; | |
508 | ||
509 | if (sdi->status != SR_ST_ACTIVE) | |
510 | return SR_ERR_DEV_CLOSED; | |
511 | ||
512 | sr_dbg("Stopping acquisition."); | |
513 | ||
514 | sdi->status = SR_ST_STOPPING; | |
515 | ||
516 | return SR_OK; | |
517 | } | |
518 | ||
519 | SR_PRIV struct sr_dev_driver ikalogic_scanalogic2_driver_info = { | |
520 | .name = "ikalogic-scanalogic2", | |
521 | .longname = "IKALOGIC Scanalogic-2", | |
522 | .api_version = 1, | |
523 | .init = init, | |
524 | .cleanup = cleanup, | |
525 | .scan = scan, | |
526 | .dev_list = dev_list, | |
527 | .dev_clear = dev_clear, | |
528 | .config_get = config_get, | |
529 | .config_set = config_set, | |
530 | .config_list = config_list, | |
531 | .dev_open = dev_open, | |
532 | .dev_close = dev_close, | |
533 | .dev_acquisition_start = dev_acquisition_start, | |
534 | .dev_acquisition_stop = dev_acquisition_stop, | |
535 | .priv = NULL, | |
536 | }; |